From stephane.bronsart at teledisnet.be  Tue May 17 09:00:20 2005
From: stephane.bronsart at teledisnet.be (StepH)
Date: Tue, 17 May 2005 15:00:20 +0200
Subject: Design Question.  Data Acquisition/Display related.
Message-ID: <4289eae4$0$344$4d4efb8e@read.news.be.uu.net>

Hi,

I'm building a little application, which the goal is to:

1./ Collect data via Serial line and or via a file (for playback).
2./ Display these data as graph, oscilloscope, ...

How manage this ?

1./ Is each "display" must responsible to acquire/read the data ?
2./ Or an engine collect the data then send them to each "display" ?

Also, how to "anim" this ?

1./ Via a timer ?
2./ Via a simple loop (read/update display/pause/read user key)

The app. will be a GUI (tkInter) app. and the user must be able to stop 
the process at any time.

Sure, all this must be maintenable, let's say to acquire data via other 
type of channel or to other type of display...

Yes, it's like a "mini" labView...

Any idea or link is welcome.

Thanks.

STepH.


From gandalf at geochemsource.com  Tue May 17 17:48:24 2005
From: gandalf at geochemsource.com (Laszlo Zsolt Nagy)
Date: Tue, 17 May 2005 23:48:24 +0200
Subject: EpyDoc problem
In-Reply-To: <428A5CAA.906@geochemsource.com>
References: <428A5CAA.906@geochemsource.com>
Message-ID: <428A66A8.9090000@geochemsource.com>


>
>At the end of the traceback:
>
>wx\_misc.py line 3665, in _eq_
>    return _misc_.DateTime.__eq__(*args)
>TypeError: Expected a pointer
>
>I have no clue what does it mean but I guess it is an EpyDoc bug.
>Does anyone ran into the same problem? Any ideas?
>  
>
Looks like it is a problem with wxWidgets. There is no problem if I do 
not import wx. How to overcome this problem?
Currently I cannot document modules that import wx. :-(

-- 
_________________________________________________________________
  Laszlo Nagy		      web: http://designasign.biz
  IT Consultant		      mail: gandalf at geochemsource.com

     		Python forever!




From s_dehmand at yahoo.com  Tue May 17 03:11:11 2005
From: s_dehmand at yahoo.com (Shariar Dehmand)
Date: Tue, 17 May 2005 00:11:11 -0700 (PDT)
Subject: No subject
Message-ID: <20050517071111.85467.qmail@web50803.mail.yahoo.com>

To whom it may concern,

I am looking to start a python organization in Iran
from scrtch,
Please help me with it, or give me the mailing address
of a reson which is advanced/experienced in what I try
to achieve.
best regards
Mesean Dehmand

__________________________________________________
Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around 
http://mail.yahoo.com 


From newsgroups at jhrothjr.com  Fri May  6 09:10:53 2005
From: newsgroups at jhrothjr.com (John Roth)
Date: Fri, 6 May 2005 08:10:53 -0500
Subject: How to detect a double's significant digits
References: <1115314620.902071.323410@f14g2000cwb.googlegroups.com>
Message-ID: <117mr70hrp721be@news.supernews.com>

"mrstephengross" <mrstephengross at hotmail.com> wrote in message 
news:1115314620.902071.323410 at f14g2000cwb.googlegroups.com...
> Hi all... How can I find out the number of significant digits (to the
> right of the decimal place, that is) in a double? At least, I *think*
> that's what I'm asking for. For instance:
>
> 0.103 --> 3
> 0.0103 --> 4
> 0.00103 --> 5
> 0.000103 --> 6
> 0.0000103 --> 7
>
> Thanks in advance!
> --Steve (mrstephengross at hotmail.com)

As a lot of the responders have pointed out, it's effectively
impossible to do so in any meaningful fashion if all you
have is the binary representation of the number.

One way of doing it is the ScientificDouble class in
PyFit (and in all other versions of FIT, for that matter.)
That provides a class that saves the original string
representation so it can be used to determine precision
for compares. It's a niche approach: it works well for
FIT's purposes, but it's not a general purpose method
of estimating precision throughout a lengthy calculation.
That requires quite different techniques.

See:

fit.c2.com
www.fitnesse.org
FitNesse Yahoo mailing list (see the files section for PyFit.)

John Roth
> 



From __peter__ at web.de  Mon May 30 02:28:55 2005
From: __peter__ at web.de (Peter Otten)
Date: Mon, 30 May 2005 08:28:55 +0200
Subject: finding indices in a sequence of parentheses
References: <u_KdneJ4tt9QuwffRVn-tg@comcast.com>
	<429a382d$0$15392$626a14ce@news.free.fr>
Message-ID: <d7ebor$sij$00$1@news.t-online.com>

tiissa wrote:

> Steven Bethard wrote:
>> (2) Does anyone see an easier/clearer/simpler[1] way of doing this?
> 
> I'd personnally extract the parenthesis then zip the lists of indices.
> In short:
> 
>   >>> def indices(mylist):
>   ...     lopen=reduce(list.__add__, [[i]*s.count('(') for i,s in
> enumerate(mylist)],[])
>   ...     lclose=reduce(list.__add__, [[i]*s.count(')') for i,s in
> enumerate(mylist)],[])
>   ...     return zip(lopen,lclose)
>   ...
>   >>> indices(lst)
>   [(2, 2), (4, 7), (6, 7), (8, 9), (8, 10)]
>   >>>
> 
> Before returning, you can check if the lists have same size and if the
> '(' has lower or equal index than ')' in each of these couples. If not
> you can raise the appropriate exception.
> 
> Disclaimer: not tested further than example above (but confident).

Not tested but confident should be an oxymoron for a programmer. Some
examples:

lst: ['(', '(', ')', ')']
hettinger [(1, 2), (0, 3)]
bethard [(1, 2), (0, 3)]
tiissa [(0, 2), (1, 3)] oops (or am I just spoilt by the XML spec?)

lst: ['(', ')(', ')']
hettinger [(0, 1), (1, 2)]
bethard [(1, 1), (0, 2)] oops
tiissa [(0, 1), (1, 2)]

So far Raymond's solution is my favourite...

Peter


From garabik-news-2005-05 at kassiopeia.juls.savba.sk  Mon May 30 01:54:17 2005
From: garabik-news-2005-05 at kassiopeia.juls.savba.sk (garabik-news-2005-05 at kassiopeia.juls.savba.sk)
Date: Mon, 30 May 2005 05:54:17 +0000 (UTC)
Subject: cpu usage limit
References: <1117206216.695085.282510@g44g2000cwa.googlegroups.com>
	<7xpsvcnx54.fsf@ruckus.brouhaha.com>
	<1117244652.455368.227250@g43g2000cwa.googlegroups.com>
Message-ID: <d7e9q9$nie$1@ns.felk.cvut.cz>

elbertlev at hotmail.com wrote:
> I understand, that what I suggest does not solve the problem you want,
> but..
> 
> Why do you want to restrict CPU usage to 30%? In Windows I run CPU

there might be three reasons:
1) less power consumed (notebooks, PDA's)
2) less heat from CPU
3) (cross platform) scheduling of low priority tasks (e.g. all my
background tasks are already running with lowest priority since I do not
want them to influence my desktop in any way, but still I want some of them to be
of higher priority)

generally, modern OS'es do not provide any ways to schedule tasks with
such constrains, which makes the question perfectly legitimate

-- 
 -----------------------------------------------------------
| Radovan Garab?k http://kassiopeia.juls.savba.sk/~garabik/ |
| __..--^^^--..__    garabik @ kassiopeia.juls.savba.sk     |
 -----------------------------------------------------------
Antivirus alert: file .signature infected by signature virus.
Hi! I'm a signature virus! Copy me into your signature file to help me spread!


From savemoney at excites.com  Mon May 30 13:00:09 2005
From: savemoney at excites.com (savemoney at excites.com)
Date: Mon, 30 May 2005 17:00:09 GMT
Subject: Uk Shoppers - Discount Vouchers and Promotional Codes - NOREPLY
Message-ID: <tEHme.2137$CF.43032@news-1.opaltelecom.net>

Do you shop online? Do you want to save money?  Discount vouchers and
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Spencer, Currys, Boots and John Lewis. Plus many, many more.

Click here for full details:
http://www.ukshops.h15.ru/vouchers.html

Note: J=?


From mefjr75 at hotmail.com  Sat May 14 16:26:43 2005
From: mefjr75 at hotmail.com (M.E.Farmer)
Date: 14 May 2005 13:26:43 -0700
Subject: A new to Python question
In-Reply-To: <tsKdnfF2xaKu3BvfRVn-iQ@comcast.com>
References: <1116088663.428932.130860@g43g2000cwa.googlegroups.com>
	<rfnhl2-ig5.ln1@Bernd.Nawothnig.dialin.t-online.de>
	<1116093118.599403.35940@g14g2000cwa.googlegroups.com>
	<tsKdnfF2xaKu3BvfRVn-iQ@comcast.com>
Message-ID: <1116102403.216512.324610@o13g2000cwo.googlegroups.com>

I said exactly what I meant, the parantheses around the values creates
a tuple that you have no reference to! It also has a side effect of
binding the names inside the tuple to a value and placing them in the
local namespace. It might be the "same" but it isn't very clear. If you
want a tuple make it explicit, if you want individual names make it
explicit.
>>> def f(q,w,e,r):
...     return q,w,e,r
...
>>> # diff names
>>> a,b,c,d= f(1,2,3,4)# explicit tuple unpacking
>>> dir()
['__builtins__', '__doc__', '__name__', 'a', 'b', 'c', 'd', 'f',
'shell']
>>> del a,b,c,d
>>> # where is the tuple
>>> (a,b,c,d)= f(1,2,3,4)# implicit tuple unpacking !?
>>> dir()
['__builtins__', '__doc__', '__name__', 'a', 'b', 'c', 'd', 'f',
'shell']
>>> del a,b,c,d
>>> # Where is the tuple (a,b,c,d)? There isn't one.
>>> # assign to a single name ( don't do tuple unpacking )
>>> tup=f(1,2,3,4)
>>> dir()
['__builtins__', '__doc__', '__name__', 'f', 'shell', 'tup']
Now there is.
Steve since you are closer to expert than novice you understand the
difference.
I feel this can be confusing to newbies, maybe you disagree.
M.E.Farmer



From steve at REMOVETHIScyber.com.au  Sat May  7 19:42:30 2005
From: steve at REMOVETHIScyber.com.au (Steven D'Aprano)
Date: Sun, 08 May 2005 09:42:30 +1000
Subject: Need help subclassing Borg
References: <pan.2005.05.07.12.28.34.263372@REMOVETHIScyber.com.au>
Message-ID: <pan.2005.05.07.23.42.29.640546@REMOVETHIScyber.com.au>

On Sat, 07 May 2005 22:28:34 +1000, Steven D'Aprano wrote:

> I've been working with the Borg design pattern from here:
> http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/66531


Thanks to everyone who took the time to answer. I've learnt a lot from the
discussion, not the least of which was to watch out for those mysterious
bunnies.


Steven.



From gabor at nekomancer.net  Fri May 27 08:32:53 2005
From: gabor at nekomancer.net (gabor)
Date: Fri, 27 May 2005 14:32:53 +0200
Subject: write to the same file from multiple processes at the same time?
Message-ID: <e3617$429713d7$3eb01f24$9096@news.flashnewsgroups.com>

hi,

what i want to achieve:
i have a cgi file, that writes an entry to a text-file..
like a log entry (when was it invoked, when did his worke end).
it's one line of text.

the problem is:
what happens if 2 users invoke the cgi at the same time?

and it will happen, because i am trying now to stress test it, so i will 
start 5-10 requests in parallel and so on.

so, how does one synchronizes several processes in python?

first idea was that the cgi will create a new temp file every time,
and at the end of the stress-test, i'll collect the content of all those 
files. but that seems as a stupid way to do it :(

another idea was to use a simple database (sqlite?) which probably has 
this problem solved already...

any better ideas?

thanks,
gabor


From andre.roberge at gmail.com  Sun May  8 10:28:44 2005
From: andre.roberge at gmail.com (=?ISO-8859-1?Q?Andr=E9_Roberge?=)
Date: Sun, 08 May 2005 11:28:44 -0300
Subject: Question about Pycon 2005 (Python Visual Sandbox)
Message-ID: <d5l796$nbl$1@sea.gmane.org>

Hi all,

I was wondering if the session:
  Intuition and Python Programming - the Python Visual Sandbox
did occur, of if it was canceled.  To this day, there is
still no sign of a corresponding paper on
http://www.python.org/pycon/2005/papers/
nor did I see any report about it.

Just curious,

Andr?



From kay.schluehr at gmx.net  Mon May 23 16:39:24 2005
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: 23 May 2005 13:39:24 -0700
Subject: first release of PyPy
In-Reply-To: <mailman.29.1116868886.18027.python-list@python.org>
References: <mailman.264.1116625088.8733.python-list@python.org>
	<1116629407.638782.145950@g47g2000cwa.googlegroups.com>
	<mailman.9.1116831944.18027.python-list@python.org>
	<d6sn2f$18d$1@news.doit.wisc.edu>
	<mailman.29.1116868886.18027.python-list@python.org>
Message-ID: <1116880764.260884.286720@g49g2000cwa.googlegroups.com>


Carl Friedrich Bolz wrote:
> Rocco Moretti wrote:
> > Alex Stapleton wrote:
> >
> >>The question still remains, can it run it's self? ;)
> >>
>
> This allready worked in the past, though it doesn't at the moment.
>
> >
> >
> > I think they try, every once in a while, to self host. The only
problem
> > at this stage of the game is the ~2000x speed slowdown. Using that
> > figure, a five second startup time for PyPy on CPython would take
about
> > 3 hours for PyPy on PyPy on CPython (5s*2000). Running a 1 second
(on
> > CPython) Python program would take a month and a half for PyPy on
PyPy
> > on CPython. (1s*2000*2000)
> >
> > Once they get the speed issue licked, the self hosting problems
should
> > be no trouble. ;)
>
> Speed isn't even the biggest problem when running PyPy on itself.
PyPy
> still 'fakes' some objects, e.g. borrows them from the underlying
> Python.

Does it mean You create an RPython object that runs on top of CPython,
but is just an RPython facade wrapped around a CPython object? So You
have four kinds of Pythons:

RPy  -  translateable into LL code
APy  -  non-translateable but interpretable by translated RPy
RPy* -  non-translateable but consistent interface with RPy. Calls
        APy*
APy* -  not translateable and not interpreteable by translated RPy

"Selfhosting" would imply vanishing RPy* and APy*. But the problem
seems to be that selfhosting must somehow be broken because the system
needs to interact with OS-dependend librarys. As long as You run the
system upon CPython the problem does not occur but once You drop it, a
kind of "extension objectspace" must be created which is translated
into code with nice interfacing properties. Or do You think that
RPython translations will be sufficient and another ext-objectspace is
just useless epi-cycling?

Kay



From steven.bethard at gmail.com  Sat May 14 14:19:24 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Sat, 14 May 2005 12:19:24 -0600
Subject: A new to Python question
In-Reply-To: <1116093118.599403.35940@g14g2000cwa.googlegroups.com>
References: <1116088663.428932.130860@g43g2000cwa.googlegroups.com>
	<rfnhl2-ig5.ln1@Bernd.Nawothnig.dialin.t-online.de>
	<1116093118.599403.35940@g14g2000cwa.googlegroups.com>
Message-ID: <tsKdnfF2xaKu3BvfRVn-iQ@comcast.com>

M.E.Farmer wrote:
> (x,y,dotp,sumx,maxv) = abc(x,y,dotp,sumx,maxv)
> This will only create a tuple in memory that has no name to reference
> it by!

Huh?  This binds the names "x", "y", "dotp", "sumx" and "maxv" to the 
values returned by abc:

py> def abc(*args):
...     return args
...
py> (x,y,dotp,sumx,maxv) = abc(2,3,5,7,11)
py> x
2
py> y
3
py> dotp
5
py> sumx
7
py> maxv
11

Of course, the parentheses around x,y,dotp,sumx,maxv are unnecessary.

STeVe


From glauco.silva at cenpra.gov.br  Mon May 16 09:16:18 2005
From: glauco.silva at cenpra.gov.br (Glauco Silva)
Date: Mon, 16 May 2005 10:16:18 -0300
Subject: Multiple "cmp"s chained one after another
References: <d64io9$s6o$05$1@news.t-online.com>
Message-ID: <00ad01c55a19$72297910$e87290c8@piau>

You can try this :
>>> l = [(2001, 5, 2),(2111,3,3),(1984, 3, 1), (2001, 1, 1)]
>>> l.sort(lambda x = l[0],y = l[1] : cmp((x[1],x[2]),(y[1],y[2])))

----- Original Message ----- 
From: "Volker Grabsch" <volker_grabsch at v.notjusthosting.com>
To: <python-list at python.org>
Sent: Saturday, May 14, 2005 7:09 AM
Subject: Multiple "cmp"s chained one after another


Hello!

Ich just found a very nice 'pythonic' solution for an often appearing
problem. I didn't find it documented anywhere, so I'm posting it here.
If this isn't new in any way, I'd really like to get to know it.

Example problem:
I have some "datetime" objects and want to sort them, as here:

birthdays = [d1,d2,d3,d4]
birthdays.sort()

However, I don't want to sort them the default way. These are birthdays,
so only the month and day do matter, not the year. E.g.:

2003-01-01  should be smaller than  1984-05-01

So I have to write the comparison on my own, e.g.

def cmp_birthdays(d1,d2):
if d1.month > d2.month: return 1
if d1.month < d2.month: return -1
if d1.day > d2.day: return 1
if d1.day < d2.day: return -1
return 0

...
birthdays.sort(cmp_birthdays)

This implementation of cmp_birthdays is very ugly. Image you want to
chain more than 2 values in that "cmp_birthdays". I also want to use the
builtin "cmp" function, not ">" and "<".

After thinking some minutes about it, I found a very nice solution:
I have some "cmp"s one aftter another. If one if them return 1 oder -1,
it sould be returned. If it returns 0, the next "cmp" is used. In other
words: I have a sequence of numbers, and want to get the first one that
is not 0. (or return 0, if all numbers were 0)

But this is exactly what the "or" operator does, due to short-circuit
evaluation. In this example, that means:

def cmp_bithdays(d1,d2):
return cmp(d1.month,d2.month) or cmp(d1.day,d2.day)

The generic pattern is:

return cmp(...) or cmp (...) or cmp(...) or ...

I'm not sure whether this pattern is already a "common recipe", but
I found it to be a very nice idea. :-)

Any opinions?


Greets,

Volker

-- 
Volker Grabsch
---<<(())>>---
\frac{\left|\vartheta_0\times\{\ell,\kappa\in\Re\}\right|}{\sqrt
[G]{-\Gamma(\alpha)\cdot\mathcal{B}^{\left[\oint\!c_\hbar\right]}}}




-- 
No virus found in this outgoing message.
Checked by AVG Anti-Virus.
Version: 7.0.308 / Virus Database: 266.11.10 - Release Date: 13/5/2005



From stnchris at xmission.com  Thu May  5 17:40:32 2005
From: stnchris at xmission.com (Steve Christensen)
Date: Thu, 5 May 2005 21:40:32 +0000 (UTC)
Subject: Encryption with Python?
References: <1115324411.952821.150780@o13g2000cwo.googlegroups.com>
	<7xoebpie84.fsf@ruckus.brouhaha.com>
Message-ID: <slrnd7l4mg.rdq.stnchris@xmission.xmission.com>

In article <7xoebpie84.fsf at ruckus.brouhaha.com>, Paul Rubin wrote:
> "Blake T. Garretson" <blake.garretson at gmail.com> writes:
> 
>> I found a few modules out there, but they seem to be all but abandoned.
>>  Most seem to have died several years ago.  The most promising package
>> is A.M. Kuchling's Python Cryptography Toolkit
>> (http://www.amk.ca/python/code/crypto.html).
> 
> Nice toolkit, more flexible and powerful than p3.py, but also more
> complicated.


There's also http://www.freenet.org.nz/ezPyCrypto/ , built on top of
PyCrypto


-Steve


From me at privacy.net  Fri May 27 10:52:36 2005
From: me at privacy.net (Dan Sommers)
Date: 27 May 2005 10:52:36 -0400
Subject: Incrementing letters
References: <d770dr$7lu$1@nwrdmz03.dmz.ncs.ea.ibs-infra.bt.com>
	<Xns966388056EE46duncanbooth@127.0.0.1>
	<d779np$2dd$1@ork-un.noris.net>
Message-ID: <m2is144t6z.fsf@unique.fully.qualified.domain.name.yeah.right>

On Fri, 27 May 2005 16:10:32 +0200,
Wolfram Kraus <kraus at hagen-partner.de> wrote:

> Duncan Booth wrote:

>>>>> import string
>>>>> upone = string.maketrans(
>> 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ',
>> 'bcdefghijklmnopqrstuvwxyzaBCDEFGHIJKLMNOPQRSTUVWXYZA')
>> 
>>>>> string.translate("I've got a string s....", upone)

>> "J'wf hpu b tusjoh t...."

>> Note the difference though: the Python code does what you said you
>> wanted, whereas your sample code corrupts punctuation.

> Wow, that's quite nice. You really learn something new every day :-) A
> minor improvement: Use string.ascii_letters as the first parameter for
> string.maketrans

And use string.ascii_letters[ 1 : ] + string.ascii_letters[ 0 ] for the
second parameter to string.maketrans.

Regards,
Dan

-- 
Dan Sommers
<http://www.tombstonezero.net/dan/>


From sjmachin at lexicon.net  Tue May 31 20:04:00 2005
From: sjmachin at lexicon.net (John Machin)
Date: Wed, 01 Jun 2005 10:04:00 +1000
Subject: Problem with re.match - Newbie needs some advice
In-Reply-To: <1117579323.153831.118090@f14g2000cwb.googlegroups.com>
References: <1117579323.153831.118090@f14g2000cwb.googlegroups.com>
Message-ID: <429CFB70.4020909@lexicon.net>

rh0dium wrote:
> Hi all,
> 
>I can't seem to get into the
> second re.match.  Can someone point out my apparent error?

errorS:
1. Imprecision -- the problem is in the *third* re.match ...
2. ... which should be re.search
3. Using re at all when simple string methods would do -- see below

[snip]
>         for line in self.cpudata:
>             # Remove the newlines..
>             ### line=line.strip()
               tokens = line.split()
>             ### if re.match(r"^processor\s+:", line):
               if tokens[0] == "processor":
>                 cpucount += 1
>             ### if re.match(r"^flags\s+:", line):
               elif tokens[0] == "flags" and "ht" in tokens:
>                 ### flags=re.split(r":\s",line)
>                 #### print "Found flags", flags[1]
>                 ### if re.match(r"\bht\b",flags[1]):
>                 print "HT on"
>                 ht=1


From mahs at telcopartners.com  Wed May  4 18:09:06 2005
From: mahs at telcopartners.com (Michael Spencer)
Date: Wed, 04 May 2005 15:09:06 -0700
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <4279366B.6070800@zopatista.com>
References: <d4u60o$akh$1@news2.netvision.net.il>	<mailman.47.1114818531.14961.python-list@python.org>	<1114924100.296223.114020@g14g2000cwa.googlegroups.com>	<1114927892.321086.60190@z14g2000cwz.googlegroups.com>	<zX%ce.78213$ft1.5056576@phobos.telenet-ops.be>	<Zj2de.78345$a42.5091422@phobos.telenet-ops.be>	<8764y29x3m.fsf@uwo.ca>
	<877jihc7qv.fsf@uwo.ca> <4279366B.6070800@zopatista.com>
Message-ID: <d5bgpl$lcb$2@sea.gmane.org>

Martijn Pieters wrote:
> Dan Christensen wrote:
> 
>> Any hints for level 13?  I know how to make a call, but don't know "who"
>> to call.
> 
> 
> I haven't figured this one out yet either. Rather frustrating really.
> All the hints I've been given so far is to rmember the solution for
> level 12.
> 
> Banging-my-head-against-it-didn't-help-either-ly yours,
> 
> Martijn Pieters
> 
Same here.  BTW I was unable to open one of the objects created in level 12.  It 
didn't stop me guessing the answer based on the others, but now I wonder whether 
I might need the missing piece for level 13.  Anyone else encounter this?

Michael



From awb at fluent.com  Fri May 20 07:31:24 2005
From: awb at fluent.com (Andrew Bushnell)
Date: Fri, 20 May 2005 07:31:24 -0400
Subject: SSL (HTTPS) with 2.4
In-Reply-To: <1116550788.207740.171780@o13g2000cwo.googlegroups.com>
References: <1116392416.139727.84630@g49g2000cwa.googlegroups.com>	<428AD4D1.8030405@v.loewis.de>	<1116396878.995648.206820@g49g2000cwa.googlegroups.com>	<1116406256.213128.68180@f14g2000cwb.googlegroups.com>	<grGie.3984$uR4.2802@newsread2.news.atl.earthlink.net>	<1116422715.320683.228810@g49g2000cwa.googlegroups.com>	<1116424363.953180.79260@g47g2000cwa.googlegroups.com>	<1116424660.917136.79680@g47g2000cwa.googlegroups.com>	<428b7bc5$0$7346$9b622d9e@news.freenet.de>	<1116463961.944713.210860@g49g2000cwa.googlegroups.com>	<mailman.208.1116513082.8733.python-list@python.org>	<1116524774.606167.98240@f14g2000cwb.googlegroups.com>
	<1116550788.207740.171780@o13g2000cwo.googlegroups.com>
Message-ID: <428DCA8C.5050305@fluent.com>

That would be nice if something could be added to the distribution.

In general, what needs to be done is as follows:

#1: Connect to proxy host:port
#2: Send "CONNECT" request with host:443 of secure url you want to 
"tunnel" to. Additional headers can be added depending on authorization 
needed for connection.
#3: Once connection is established, setup a SSL handshake/connection via 
the proxy then start getting/sending data.

I have steps #1 and #2 down and working with no problems, I keep getting 
  hung up on step 3 and that is where the SSL Errors are occuring for me 
with squid etc.




Bloke wrote:
> Ideally, we should aim at a 'fix' that can be included in the
> distribution.  I am going to look at what communication goes on between
> the proxy server and a working browser by monitoring the traffic.  From
> what i understand, the proxy needs to be told first to set up a secure
> connection with the web site, and only then do you pass the url to the
> proxy.
> 
> 
> Bloke
> 

-- 
************************************
Andrew Bushnell
Lead Development Engineer
Fluent Inc.
10 Cavendish Court
Centerra Resource Park
Lebanon, NH  03766
awb at fluent.com
Phone: 603-643-2600, ext. 757
Fax: 603-643-1721
www.fluent.com
************************************


From multicast_2004 at hotmail.com  Fri May  6 09:42:16 2005
From: multicast_2004 at hotmail.com (=?gb2312?B?s8Ig0fQ=?=)
Date: Fri, 06 May 2005 13:42:16 +0000
Subject: [HELP] Tkinter Application Minimized to System Tray :)
Message-ID: <BAY1-F39DA2AB158BE8CCDFDEF85FA1B0@phx.gbl>

  I write a program with Python 2.4 + Tkinter
    Execute it, there will be a window show something.
    If I minimize it, it will be minimized to the taskbar. But I would like 
it to miniminze to the System Tray, this can make taskbar more clear. Would 
you please tell me how to modify my program.

    Thanks a lot !!

Soure Code : 

# Display digits of pi in a window, calculating in a separate thread.
# Compare with wpi.py in the Demo/threads/wpi.py

import sys
import time
import thread
from Tkinter import *

class ThreadExample:
    def __init__(self, master=None):
        self.ok                = 1
        self.digits            = []
        self.digits_calculated = 0
        self.digits_displayed  = 0
        self.master            = master

        thread.start_new_thread(self.worker_thread, ())

        self.frame = Frame(master, relief=RAISED, borderwidth=2)
        self.text = Text(self.frame, height=26, width=50)
        self.scroll = Scrollbar(self.frame, command=self.text.yview)
        self.text.configure(yscrollcommand=self.scroll.set)
        self.text.pack(side=LEFT)
        self.scroll.pack(side=RIGHT, fill=Y)
        self.frame.pack(padx=4, pady=4)
        Button(master, text='Close', command=self.shutdown).pack(side=TOP)

        self.master.after(100, self.check_digits)

    def worker_thread(self):
        while self.ok:
            self.digits.append(`9`)
            time.sleep(0.001)

    def shutdown(self):
        self.ok =0
        self.master.after(100, self.master.quit)

    def check_digits(self):
        self.digits_calculated = len(self.digits)
        diff = self.digits_calculated - self.digits_displayed
        ix = self.digits_displayed
        for i in range(diff):
            self.text.insert(END, self.digits[ix+i])
        self.digits_displayed =  self.digits_calculated
        self.master.title('%d digits of pi' % self.digits_displayed)
        self.master.after(100, self.check_digits)

root = Tk()
root.option_readfile('optionDB')
example = ThreadExample(root)
root.mainloop()

_________________________________________________________________
???? MSN Explorer:   http://explorer.msn.com/lccn/  



From Please  Wed May 18 19:06:03 2005
From: Please (Please)
Date: 18 May 2005 18:06:03 -0500
Subject: * * * Important Please Read * * * May 18,
	2005 6:52:44 pm (Best Viewed at 1024x768) * * * * * * * * * * * * * *
	* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
	* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
	* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
	* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
	* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
	* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
	* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
	* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
	* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
	* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
	* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
	* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
	* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
	* * * * * * * * * * * * * * * * * *
References: <1116456748.906548.175760@g49g2000cwa.googlegroups.com>
Message-ID: <oain81hq47h5k2c268r235pi526r88rs5u@4ax.com>

Send abuse reports, with full headers, to:
groups-abuse at google.com, groups-support at google.com, abuse at aol.com,
ToSReports at AOL.Com, tosusenet at aol.com, ToSGeneral at Aol.com,
mail-abuse at cc.yahoo-inc.com, spam at uce.gov


From http  Fri May 20 21:45:22 2005
From: http (Paul Rubin)
Date: 20 May 2005 18:45:22 -0700
Subject: Is Python suitable for a huge, enterprise size app?
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>
	<1116432325.497438.64580@g49g2000cwa.googlegroups.com>
	<1116433218.495131.71260@g49g2000cwa.googlegroups.com>
	<1116443474.565264.176640@g44g2000cwa.googlegroups.com>
	<7xd5rn93zi.fsf@ruckus.brouhaha.com>
	<mailman.210.1116513794.8733.python-list@python.org>
	<7x1x81d5bx.fsf@ruckus.brouhaha.com>
	<mailman.262.1116623235.8733.python-list@python.org>
Message-ID: <7xacmpgxn1.fsf@ruckus.brouhaha.com>

Dave Brueck <dave at pythonapocrypha.com> writes:
> > What do you use for HTTPS?
> 
> m2crypto (plus some patches to make asynchronous SSL do what we needed).

That seems to be a nice piece of code, but it's still at version 0.13;
if something goes wrong, are you sure you want to explain that you
were using beta-test software to protect your customers' production
financial transactions?  There's also been some traffic on the
python-crypto list about Zope encountering memory leaks with it.  I
haven't read the messages carefully though, so I'm not sure what the
situation is.

> > did you use the Cookie module in your HTTP servers?...
> Are you referring to the use of pickle for cookie serialization?

Yes.  


From querejeto at gmail.com  Tue May  3 12:19:12 2005
From: querejeto at gmail.com (querejeto)
Date: 3 May 2005 09:19:12 -0700
Subject: Pydev Refactoring Feature in Eclipse
Message-ID: <1115137151.978023.29890@z14g2000cwz.googlegroups.com>

Folks:

I cannot get a refactoring menu to show up on my Eclipse (3.1M3,
Windows XP). F3 works, I can run and debug scripts. Can't refactor,
though.

Any idea what I could be missing on my installation?

Thanks:

Querejeto



From xah at xahlee.org  Mon May 23 06:22:41 2005
From: xah at xahlee.org (Xah Lee)
Date: 23 May 2005 03:22:41 -0700
Subject: What are OOP's Jargons and Complexities?
Message-ID: <1116843761.619249.144790@g47g2000cwa.googlegroups.com>


What are OOP's Jargons and Complexities
Xah Lee, 20050128

The Rise of Classes, Methods, Objects

In computer languages, often a function definition looks like this:
subroutine f (x1, x2, ...) {
  variables ...
  do this or that
}

In advanced languages such as LISP family, it is not uncommon to define
functions inside a function. For example:
subroutine f (x1, x2, ...) {
  variables...
  subroutine f1 (x1...) {...}
  subroutine f2 (x1...) {...}
}

Often these f1 f2 inner functions are used inside f, and are not
relevant outside of f. Such power of the language gradually developed
into a style of programing. For example:
subroutine a_surface () {
  coordinatesList = ...;
  subroutine translate (distance) {...}
  subroutine rotate (angle) {..}
}

Such a style is that the a_surface is no longer viewed as a function.
But instead, a boxed set of functions, centered around a piece of data.
And, all functions for manipulating this piece of data are all embodied
in this function. For example:
subroutine a_surface (arg) {
  coordinatesList = ...
  subroutine translate (distance) {set coordinatesList to translated
version}
  subroutine rotate (angle) {set coordinatesList to rotated version}
  subroutine return () {return coordinatesList}

  if (no arg) {return coordinatesList}
    else { apply arg to coordinatesList }
}

In this way, one uses a_surface as a data, which comes with its owe set
of functions:
mySurface = a_surface();
mySurface(rotate(angle));        // now the surface data has been
rotated
mySurface(translate(distance));  // now its translated
newSurface = mySurface(return())

So now, a_surface is no longer viewed as a subroutine, but a boxed set
of things centered around a piece of data. All functions that work on
the data are included in the boxed set. This paradigm possible in
functional languages has refined so much so that it spread to other
groups and became known as Object Oriented Programing, and complete
languages with new syntax catered to such scheme emerged.

In such languages, instead of writing them like this:
mySurface = a_surface();
mySurface(rotate(angle));

the syntax is changed to like this, for example:
mySurface = new a_surface();
mySurfaceRotated = mySurface.rotate(angle);

In such languages, the super subroutine a_surface is no longer called a
function or subroutine. It is now called a ?Class?. And now the
variable holding the function "mySurface = a_surface()" is now called a
?Object?. Subroutines inside the function a_surface() are no longer
called inner-subroutines. They are called ?Methods?. The act of
assigning a super-subroutine to a variable is called instantiation.

This style of programing and language have become so fanatical that in
such dedicated languages like Java, everything in the language are
?Classes?. One can no longer just define a variable or subroutine.
Instead, one creates these meta-subroutine ?Classes?. Everything
one do are inside Classes. And one assign Classes inside these Classes
to create ?Objects?. And one uses ?Methods? to manipulate
Objects. In this fashion, even basic primitives like numbers, strings,
and lists are no longer atomic entities. They are now Classes.

For example, in Java, a string is a class String. And inside the class
String, there are Methods to manipulate strings, such as finding the
number of chars, or extracting parts of the string. This can get very
complicated. For example, in Java, there are actually two Classes of
strings: One is String, and the other is StringBuffer. Which one to use
depends on whether you intend to change the data.

So, a simple code like this in normal languages:
a = "a string";
b = "another one";
c = join(a,b);
print c;

or in lisp style
(set a "a string")
(set b "another one")
(set c (join a b))
(print c)

becomes in pure OOP languages:
public class test {
  public static void main(String[] args) {
    String a = new String("a string");
    String b = new String("another one");
    StringBuffer c = new StringBuffer(40);
    c.append(a); c.append(b);
    System.out.println(c.toString());
    }
}

Here, the "new String" creates a String object. The "new
StringBuffer(40)" creates the changeable string object StringBuffer,
with room for 40 chars. "append" is a method of StringBuffer. It is
used to join two Strings.

Notice the syntax "c.append(a)", which we can view it as calling a
inner subroutine "append", on a super subroutine that has been assigned
to c, where, the inner subroutine modifies the inner data by appending
a to it.

And in the above Java example, StringBuffer class has another method
"toString()" used to convert this into a String Class, necessary
because System.out.println's parameter requires a String type, not
StringBuffer.

For a example of the complexity of classes and methods, see the Java
documentation for the StringBuffer class at
http://java.sun.com/j2se/1.4.2/docs/api/java/lang/StringBuffer.html
(local copy)

In the same way, numbers in Java have become a formalization of many
classes: Double, Float, Integer, Long... and each has a bunch of
"methods" to operate or convert from one to the other.

Instead of
aNumber = 3;
print aNumber^3;

In Java the programer needs to master the ins and outs of the several
number classes, and decide which one to use. (and if a program later
needs to change from one type of number to another, it is often
cumbersome.)

This Object Oriented Programing style and dedicated languages (such as
C++, Java) have become a fad like wild fire among the programing mass
of ignoramuses in the industry. Partly because of the data-centric new
perspective, partly because the novelty and mysticism of new syntax and
jargonization.

It is especially hyped by the opportunist Sun Microsystems with the
inception of Java, internet, and web applications booms around 1995. At
those times, OOP (and Java) were thought to revolutionize the industry
and solve all software engineering problems, in particular by certain
"reuse of components" concept that was thought to come with OOP.

As part of this new syntax and purity, where everything in a program is
of Classes and Objects and Methods, many complex issues and concept
have arisen in OOP.

We now know that the jargon Class is originally and effectively just a
boxed set of data and subroutines, all defined inside a subroutine. And
the jargon "Object" is just a variable that has been set to this super
subroutine. And the inner subroutines are what's called Methods.

----------
to be continued tomorrow.

This is part of an installment of the article
?What are OOP's Jargons and Complexities?
by Xah Lee, 20050128. The full text is at
 http://xahlee.org/Periodic_dosage_dir/t2/oop.html

? Copyright 2005 by Xah Lee. Verbatim duplication of the complete
article for non-profit purposes is granted.

The article is published in the following newsgroups:
comp.lang.c,comp.lang.c++,comp.lang.lisp,comp.unix.programmer
comp.lang.python,comp.lang.perl.misc,comp.lang.scheme,comp.lang.java.programmer
comp.lang.functional,comp.object,comp.software-eng,comp.software.patterns

 Xah
 xah at xahlee.org
? http://xahlee.org/



From jamesdcarroll at hotmail.com  Sat May 28 00:26:01 2005
From: jamesdcarroll at hotmail.com (James D Carroll)
Date: Sat, 28 May 2005 00:26:01 -0400
Subject: Intellisense and the psychology of typing
References: <1117125072.825389.74190@g47g2000cwa.googlegroups.com>
Message-ID: <Td2dndb_0ehebwrfRVn-oA@speakeasy.net>

<andrew.queisser at hp.com> wrote>
> 1) Intellisense is really just another crutch that does more harm than
> good? There were a few hardcore defenders of this position but not
> many.
I'm primarily a VB programmer, but I also do Java and web stuff as well.
Whenever I look at a new IDE the FIRST thing I look at is whether
Intellisense-like functionality is present. If it is not, I discard it from
further consideration.  The reason has nothing to do with static vs dynamic
typing. It has to do with the fact that I spend a considerably amount of
time thinking about how I'm going to solve the problem at hand.  Filling my
head with API specs that I have to look up is just a pain. And frankly if I
have to type 'boolean' instead of  'boo<tab>' I get real cranky real fast.

> 2) Intellisense is really useful but hard to implement well in IDEs for
> dynamic languages? Can anyone comment on the status of
> Intellisense-like tools for dynamic-language IDEs?
It might be and probably is.  But I say if dynamic typers want the
flexibility they think they are getting then they should have to deal with
ALL of the consequences.

> 3) Users of dynamic languages are always developing/debugging running
> programs where the current type of a variable is known and hence
> Intellisense is possible again? My own limited experience with dynamic
> languages (Ruby) is limited to edit-run cycles.

I can't speak to that only to say that, how in the world can an object that
accepts anything reasonable be expected to protect itself from misuse or
provide reliable services given a set of parameters?




From skip at pobox.com  Wed May 11 21:41:30 2005
From: skip at pobox.com (Skip Montanaro)
Date: Wed, 11 May 2005 20:41:30 -0500
Subject: Python Documentation (should be better?)
In-Reply-To: <d5tqi2$d8l$2@sea.gmane.org>
References: <d5tjng$kae$1@sea.gmane.org>
	<mailman.390.1115838298.29826.python-list@python.org>
	<d5to4d$895$1@solaris.cc.vt.edu> <d5tqi2$d8l$2@sea.gmane.org>
Message-ID: <17026.46154.988018.268004@montanaro.dyndns.org>


    Christopher> Exactly!!  See thats what I'm saying.  I _think_ its widely
    Christopher> accepted that PHP has awesome documentation.  And like rbt
    Christopher> said, that makes it extremely useful.  Why can't Python
    Christopher> have documentation like that?

It's just a simple matter of writing, editing, proofreading, feedback, etc.
Given the current documentation set, does it appear what you're looking for
is mostly a reorganization of the existing content?

You gave the example of searching for "array".  That happens to return
something very useful because it maps directly to a section of the PHP
manual.  I tried searching for "float" and "string" but got much less
on-target responses.  When I searched for a term and selected selected the
"online documentation" search category it did a Google search, which is what
the search box on docs.python.org does.

Skip


From ville at spammers.com  Thu May 26 03:24:07 2005
From: ville at spammers.com (Ville Vainio)
Date: 26 May 2005 10:24:07 +0300
Subject: Just remember that Python is sexy
References: <1116899839.323185.58350@g49g2000cwa.googlegroups.com>
	<O9v*jQrPq@news.chiark.greenend.org.uk>
	<v8adndXwp-hF4gnfRVn-ig@powergate.ca>
Message-ID: <du7is16wiug.fsf@mozart.cc.tut.fi>

>>>>> "Peter" == Peter Hansen <peter at engcorp.com> writes:

    Peter> Sion Arrowsmith wrote:
    >> But can you come up with a method for remembering which way
    >> round str.find() and str.index() are?

    Peter> Don't use "str" and you won't have anything to remember:

    Peter> 'foo bar baz'.find('spam')
    Peter> 'spanish inquisition'.index('parrot')

But which one raises an exception, and which one returns -1?

-- 
Ville Vainio   http://tinyurl.com/2prnb


From jstroud at mbi.ucla.edu  Fri May  6 15:05:41 2005
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Fri, 6 May 2005 12:05:41 -0700
Subject: hard memory limits
In-Reply-To: <d5gch5$ld1$1@sea.gmane.org>
References: <d5f9jl$k6d$1@domitilla.aioe.org>
	<200505061052.28325.jstroud@mbi.ucla.edu>
	<d5gch5$ld1$1@sea.gmane.org>
Message-ID: <200505061205.41254.jstroud@mbi.ucla.edu>

On Friday 06 May 2005 11:27 am, Fredrik Lundh wrote:
> James Stroud wrote:
> > > does Mac OS X ship with memory limits set by default?  isn't that
> > > a single-user system?
> >
> > Dear original poster or whoever is interested in OS X:
> >
> > OS X is not a single user system. It is BSD based unix. And its fv at king
> > sweeeeeeeeeeeeeet! (Though I'm using only Linux right now :o/
>
> Well, Apple's marketing materials contain no signs whatsoever that the
> systems Apple sells are designed for massive numbers of users, compared
> to systems from RedHat, Sun, HP, etc.  (if you look at apple.com in this
> very moment, it talks a lot about "your mac" and "your desktop" and "your
> computer", not "the mac/desktop/computer you share with hundreds of
> other users").
>
> So why would Apple insist on setting unusably low process limits, when
> the others don't?
>
> </F>

I think that two different markets exist for this computer:

1. Joe user who has never seen a command line interface. These people need a 
nice, cozy little user environment that takes as little understanding as 
possible to use. They also buy the most computers and are probably most 
responsive to fluffy advertising campaigns. Hence the targeted advertising on 
apple.com In this case, my guess is that memory allocation, etc, is left to 
the application. For cocoa apps it is the objective c runtime handling this 
kind of thing and for carbon apps, it is probobably tacked on during the 
process of carbonizing. But I should say that I really don't know much about 
the low level workings of either.

2. Scientists/Engineers/Programmer types. These people configure their own 
limits instinctively and probably forgot that they ever put that unlimit in 
their rc files (like I did) and the dozens of other customizations they did 
to get their OS X boxes just so for unix use. When Joe User makes the 
crossover, such customizations don't seem very intuitive. Plus, I remember 
having to ulimit my IRIX account on SGIs I used back in the day--so other 
*nixes seem to have similar requirements.

To answer your question, my guess is that no one has complained yet.

James

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From arutz at mimoza.pantel.net  Mon May 30 10:44:43 2005
From: arutz at mimoza.pantel.net (Antal Rutz)
Date: Mon, 30 May 2005 16:44:43 +0200
Subject: Threading questions
In-Reply-To: <d7f04k$hhl$1@wake.carmen.se>
References: <mailman.213.1117287469.18027.python-list@python.org>
	<d7f04k$hhl$1@wake.carmen.se>
Message-ID: <429B26DB.2050204@mimoza.pantel.net>

Magnus Lycka wrote:
> Antal Rutz wrote:
> 
>>Hi, All!
>>
>>I'm new to threading. I have some design questions:
>>Task: I collect data and store them in an RDBMS (mysql or pgsql)
>>
>>The question is how to do that with threading?
>>The data-collecting piece of the code runs in a thread.
>>
>>1. Open the db, and each thread writes the result immediately.
>>   (Sub-question: which is better: cursor object passed to the thread
>>   or stored in a global var.)
>>2. Threads return data, which is written to DB after that.
>>3. Threads write to global variable, after 'join()' data is written.
>>   (Can be used global (write-only) variables with threads at all?)
>>4. ?...
> 
> 
> I'm not sure why you need threading at all here, but I would avoid
> both globals and passing cursors between threads. I don't think all
> DB-API implementations can handle threading properly.

I 'snmpwalk' routers and some are very slow, so it's better to spread
the routers among data-collecting threads.

> I suspect it might be useful to do data collection in one thread,
> DB communication in another, and to use a Queue.Queue object to
> pass data from data collection to DB insertion thread.

Yes, I just figure out how the many-collecting-one-dbwriting-thread
design could be made. It doesn't seem to be too difficult.

Thanks for the hints!

-- 


--arutz


From Dennis.Benzinger at gmx.net  Thu May 19 15:24:36 2005
From: Dennis.Benzinger at gmx.net (Dennis Benzinger)
Date: Thu, 19 May 2005 21:24:36 +0200
Subject: Self-modifying Code
In-Reply-To: <1116522647.227661.99290@g43g2000cwa.googlegroups.com>
References: <1116522647.227661.99290@g43g2000cwa.googlegroups.com>
Message-ID: <428ce7f5@news.uni-ulm.de>

qwweeeit at yahoo.it schrieb:
> [...]
> Also Python can (writing and running a module, in-line):
> 
> fNew =open("newModule.py",'w')
> lNew=['print 123\n','print 454\n','print 789\n']
> fNew.writelines(lNew)
> fNew.close()
> from newModule import *
>  [...]

You don't even need a file for this.
Try: exec("print 123; print 456; print 789")

Bye,
Dennis


From roy at panix.com  Mon May  9 09:23:21 2005
From: roy at panix.com (Roy Smith)
Date: Mon, 09 May 2005 09:23:21 -0400
Subject: __brace__ (PEP?)
References: <mailman.175.1115594947.29826.python-list@python.org>
	<roy-DE30BB.20151208052005@reader1.panix.com>
	<mailman.177.1115599072.29826.python-list@python.org>
	<roy-8C6C81.20480608052005@reader1.panix.com>
	<1115617678.841460.294970@z14g2000cwz.googlegroups.com>
Message-ID: <roy-99FD0B.09232109052005@reader1.panix.com>

"Kay Schluehr" <kay.schluehr at gmx.net> wrote:

> Roy Smith wrote:
> 
> > foo->bar ==> foo.__arrrow__(bar)
> > foo$bar ==> foo.__dollar__(bar)
> > foo#bar ==> foo.__hash__(bar)
> > foo::bar ==> foo.__scope__(bar)
> 
> I'm strongly in favor for the arrow ( but with two "r" only ). The
> question is simply: for what?

I'm confused.  You're strongly in favor of a piece of punctuation even 
though you don't have any idea what it might be used for?


From rschroev_nospam_ml at fastmail.fm  Sun May  8 17:40:14 2005
From: rschroev_nospam_ml at fastmail.fm (Roel Schroeven)
Date: Sun, 08 May 2005 21:40:14 GMT
Subject: Clueless with cPickle
In-Reply-To: <pan.2005.05.08.21.27.33.22267@yahoo.com>
References: <pan.2005.05.08.21.27.33.22267@yahoo.com>
Message-ID: <2Hvfe.85711$te6.5343369@phobos.telenet-ops.be>

les wrote:

> Traceback (most recent call last):
>   File "/home/les/workspace/Module 2/questor.py", line 18, in ?
>     f = file(questorlistfile)
> NameError: name 'questorlistfile' is not defined
> 
> I thought that I had defined questorlistfile on the 4th line below
> 
> # define some constants for future use 
>  
> import cPickle as p
> #import pickle as p
> 
> questorfile = 'questor.data' # the name of the file where we will store the object

You defined questorfile, not questorlistfile.

-- 
If I have been able to see further, it was only because I stood
on the shoulders of giants.  -- Isaac Newton

Roel Schroeven


From mwm at mired.org  Sat May 28 16:12:34 2005
From: mwm at mired.org (Mike Meyer)
Date: Sat, 28 May 2005 15:12:34 -0500
Subject: __call__
References: <42987f9a$0$26432$9b622d9e@news.freenet.de>
	<1117293143.679768.286600@g43g2000cwa.googlegroups.com>
	<4298ce99$0$176$9b622d9e@news.freenet.de>
Message-ID: <86ekbrun2l.fsf@guru.mired.org>

TK <merman at o2online.de> writes:
> Simon Percivall wrote:
>> Look at http://docs.python.org/ref/callable-types.html
>>
>>>>>class Test(object):
>> ...     def __call__(self):
>> ...         print "the instance was called"
>> ...
>>
>>>>>t = Test()
>>>>>t()
>> the instance was called
>> Is this what you wanted?
>
> Sorry but it does not work. Here's my code:
>
>  >>> class Test(object):
> ...     def __call__(self):
> ...         print 'Hi'
> ...
>  >>> Test()
> <__main__.Test object at 0x3e6d0>

Test() invokes the class, which returns an instance of the class.

Look back at what Simon did. He stored the value returned by Test() as
t, then called t with "t()". That's what __call__ is - the routine
invoked when an instance of a class is invoked as a callable object.

To change what happens when the class is invoked as a callable object,
you need to fool with metaclasses.

It might help if you told us what you really wanted to do with this
construct.

        <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From timothy at open-networks.net  Tue May  3 00:42:30 2005
From: timothy at open-networks.net (Timothy Smith)
Date: Tue, 03 May 2005 14:42:30 +1000
Subject: py2exe and library.zip
Message-ID: <42770136.6090401@open-networks.net>

is it possible instead of py2exe putting all library's in a zip file, to 
just put them in a sub dir?


From bill.mill at gmail.com  Mon May  9 13:16:00 2005
From: bill.mill at gmail.com (Bill Mill)
Date: Mon, 9 May 2005 13:16:00 -0400
Subject: Listing of declared variables and functions
In-Reply-To: <1115657899.543887.284720@f14g2000cwb.googlegroups.com>
References: <1115657899.543887.284720@f14g2000cwb.googlegroups.com>
Message-ID: <797fe3d40505091016572eecf8@mail.gmail.com>

On 9 May 2005 09:58:19 -0700, ohms377 <frankie.y.liu at gmail.com> wrote:
> Dear python users,
> 
> In interactive mode, I was wondering if there is a way to list all
> declared variables and functions (and from global workspace).
> 

>>> x = 12
>>> z = 13
>>> import re
>>> locals()
{'__builtins__': <module '__builtin__' (built-in)>, 're': <module 're' from '/us
r/lib/python2.4/re.pyc'>, 'x': 12, '__name__': '__main__', 'z': 13, '__doc__': N
one}
>>> locals().keys()
['__builtins__', 're', 'x', '__name__', 'z', '__doc__']
>>> globals()
{'__builtins__': <module '__builtin__' (built-in)>, 're': <module 're' from '/us
r/lib/python2.4/re.pyc'>, 'x': 12, '__name__': '__main__', 'z': 13, '__doc__': N
one}

Peace
Bill Mill
bill.mill at gmail.com


From s_david_rose at hotmail.com  Tue May 24 09:50:45 2005
From: s_david_rose at hotmail.com (GMane Python)
Date: Tue, 24 May 2005 09:50:45 -0400
Subject: py2exe for WMI
Message-ID: <d6vbcu$lt2$1@sea.gmane.org>

Hello All.
  I'm trying to 'compile-to-EXE' a python program which uses Win32 & WMI to
pull system info. from the PC such as serial number, CPU speed, etc.  I'm
having problems with py2exe -- with regard to Win2000 & WinXP platforms.  It
seems that the program only works if I have one typelib for WinXP and a
slightly different one for Win2000.  Here is my relevent section from the
py2exe setup.py:
setup(
    options = {"py2exe": {"typelibs":
##                          # typelib for WMI - WinXP
##                          [('{565783C6-CB41-11D1-8B02-00600806D9B6}', 0,
1, 2)],

                          # typelib for WMI - Win2000
                          [('{565783C6-CB41-11D1-8B02-00600806D9B6}', 0, 1,
1)],

                          # create a compressed zip archive
                          "compressed": 1,
                          "optimize": 2,
                          "packages": ["encodings"],
                          "excludes": excludes}},
    # The lib directory contains everything except the executables and the
python dll.
    # Can include a subdirectory name.
    zipfile = "lib/shared.zip",

Can anyone tell me how I might make one unified py2exe setup.py that'll
'compile' for both Win2000 & WinXP?

If not, can someone give me a hint as to how I can have a python 'launcher'
which can determine the difference between Win2000 & WinXP?  Using the
sys.platform, they both show as Win32.

Thanks!
Dave





From fredrik at pythonware.com  Mon May  2 16:28:37 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Mon, 2 May 2005 22:28:37 +0200
Subject: Can't get compression in Python zip script.
References: <d55b11+flng@eGroups.com><mailman.34.1115045555.6583.python-list@python.org>
	<1115065046.071440.62630@z14g2000cwz.googlegroups.com>
Message-ID: <d5625u$ggi$1@sea.gmane.org>

M.E.Farmer wrote:

> I saw compression=0 and assumed that 1 would mean true, but no!
> zipfile.ZIP_DEFLATED = 8, defies logic, it is the only compression type
> why not accept any non zero as compression.

"is the only compression type" ?  quoting from the ZIP specification:

     compression method: (2 bytes)

          (see accompanying documentation for algorithm
          descriptions)

          0 - The file is stored (no compression)
          1 - The file is Shrunk
          2 - The file is Reduced with compression factor 1
          3 - The file is Reduced with compression factor 2
          4 - The file is Reduced with compression factor 3
          5 - The file is Reduced with compression factor 4
          6 - The file is Imploded
          7 - Reserved for Tokenizing compression algorithm
          8 - The file is Deflated
          9 - Enhanced Deflating using Deflate64(tm)
         10 - PKWARE Data Compression Library Imploding
         11 - Reserved by PKWARE
         12 - File is compressed using BZIP2 algorithm

( http://www.pkware.com/company/standards/appnote/appnote.txt )

the current zipfile version only supports 0 and 8, but that doesn't mean that
future versions won't support other ZIP compressions.

</F> 





From http  Fri May 27 09:21:21 2005
From: http (Paul Rubin)
Date: 27 May 2005 06:21:21 -0700
Subject: write to the same file from multiple processes at the same time?
References: <e3617$429713d7$3eb01f24$9096@news.flashnewsgroups.com>
	<roy-29C1D4.09142527052005@reader1.panix.com>
	<XOqdnU5dNq_vgwrfRVn-rg@powergate.ca>
Message-ID: <7xacmgdctq.fsf@ruckus.brouhaha.com>

Peter Hansen <peter at engcorp.com> writes:
> The OP was probably on the right track when he suggested that things
> like SQLite (conveniently wrapped with PySQLite) had already solved
> this problem.

But they haven't.  They depend on messy things like server processes
constantly running, which goes against the idea of a cgi that only
runs when someone calls it.


From __peter__ at web.de  Thu May 19 16:18:00 2005
From: __peter__ at web.de (Peter Otten)
Date: Thu, 19 May 2005 22:18:00 +0200
Subject: Convert from numbers to letters
References: <1116511005.900715.107260@o13g2000cwo.googlegroups.com>
	<mailman.209.1116513780.8733.python-list@python.org>
	<1116528750.285895.27720@f14g2000cwb.googlegroups.com>
	<mailman.223.1116529228.8733.python-list@python.org>
	<1116530403.328825.216120@z14g2000cwz.googlegroups.com>
	<mailman.225.1116531601.8733.python-list@python.org>
	<d6iqe5$rgt$01$1@news.t-online.com>
	<mailman.226.1116532960.8733.python-list@python.org>
Message-ID: <d6is7u$7tm$04$1@news.t-online.com>

Bill Mill wrote:

>> By the way, sorted() can be removed from your original post.
>> 
>> Code has no effect :-)
> 
> I'm gonna go ahead and disagree with you:
> 
>>>> sorted([''.join((x, y)) for x in alpha \
> ...????for?y?in?['']?+?[z?for?z?in?alpha]],?key=len)?==?\
> ... [''.join((x,y)) for x in alpha for y in [''] + [z for z in alpha]]
> False
> 

That's not your original code. You used the contents to modify the locals()
(effectively globals()) dictionary:

>>>> alpha = 'abcdefghijklmnopqrstuvwxyz'
>>>> for i, digraph in enumerate(sorted([''.join((x, y)) for x in alpha \
> for?y?in?['']?+?[z?for?z?in?alpha]],?key=len)):
> ...?????locals()[digraph]?=?i?+?i
> ...
> 

Of course you lose the order in that process. 
When you do care about order, I suggest that you swap the for clauses
instead of sorting, e. g:

>>> alpha = list("abc")
>>> items = [x + y for x in [""] + alpha for y in alpha]
>>> items == sorted(items, key=len)
True

Peter
 


From phillip.watts at anvilcom.com  Thu May 12 07:15:26 2005
From: phillip.watts at anvilcom.com (phil)
Date: Thu, 12 May 2005 06:15:26 -0500
Subject: Destructor Woes, was Advice needed on __del__
References: <d5o1s1$8h3$1@sea.gmane.org>	<d5obmp$cqh$1@sea.gmane.org>	<427FBAD4.3070004@anvilcom.com>	<d5ogv2$2k9$1@sea.gmane.org>	<42800279.3B26FFF3@pauahtun.org>	<mailman.244.1115687630.29826.python-list@python.org>	<DS1ge.87015$Tk7.5147767@phobos.telenet-ops.be><mailman.304.1115745700.29826.python-list@python.org>	<PfDge.88591$rd1.5444651@phobos.telenet-ops.be>
	<d5vbj6$cns$1@sea.gmane.org>
Message-ID: <42833ACE.4000901@anvilcom.com>


> 
> do you (or whoever gave you the tip) have the slightest idea what atexit does?
> 
Yeah, I got the tip on this group. researched and found it was

for when program ends!
I was trying to treat it like a destructor. darn.






From mefjr75 at hotmail.com  Sun May 15 13:03:11 2005
From: mefjr75 at hotmail.com (M.E.Farmer)
Date: 15 May 2005 10:03:11 -0700
Subject: A new to Python question
In-Reply-To: <2g7jl2-qf8.ln1@Bernd.Nawothnig.dialin.t-online.de>
References: <1116088663.428932.130860@g43g2000cwa.googlegroups.com>
	<rfnhl2-ig5.ln1@Bernd.Nawothnig.dialin.t-online.de>
	<1116093118.599403.35940@g14g2000cwa.googlegroups.com>
	<tsKdnfF2xaKu3BvfRVn-iQ@comcast.com>
	<1116102355.715816.192840@z14g2000cwz.googlegroups.com>
	<42866cb8.177725696@news.oz.net>
	<1116109657.494997.315650@o13g2000cwo.googlegroups.com>
	<2g7jl2-qf8.ln1@Bernd.Nawothnig.dialin.t-online.de>
Message-ID: <1116176591.072516.71020@g43g2000cwa.googlegroups.com>


>No. You claimed
<quote>
This will only create a tuple in memory
</quote>
That is not what I said please do not edit my words and call it a
quote!

>But we just learned that this is not the case.
Yes it seems I was proven wrong and have learned much from the
discussion ;)
That is why I am here to learn from others and help if I can (
sometimes I am just plain wrong and I get the help )

>Reduced to this argument I have no objection.
Glad to hear it.

>Lisp is far from being ugly ;-)
Your words not mine.I never said it was ugly.
Lisp is beautiful but Python isn't Lisp, and the () *are* getting
overloaded.

M.E.Farmer



From robin at reportlab.com  Fri May 20 09:14:18 2005
From: robin at reportlab.com (Robin Becker)
Date: Fri, 20 May 2005 14:14:18 +0100
Subject: python24.zip
Message-ID: <428DE2AA.1070308@chamonix.reportlab.co.uk>

Investigating a query about the python path I see that my win32 installation has 
c:/windows/system32/python24.zip (which is non existent) second on sys.path 
before the actual python24/lib etc etc.

Firstly should python start up with non-existent entries on the path?
Secondly is this entry be the default for some other kind of python installation?
-- 
Robin Becker



From avinashc at yahoo.com  Sun May  8 09:44:27 2005
From: avinashc at yahoo.com (avinashc at yahoo.com)
Date: 8 May 2005 06:44:27 -0700
Subject: Coding comments/suggestions - first python script - sshd/ftpd blocking
Message-ID: <1115559867.855685.104520@g14g2000cwa.googlegroups.com>

If anyone is interested in a /etc/hosts.deny automatic update script
(Unix only) based on sshd/vsftpd attacks, here's a python script:
http://www.aczoom.com/tools/blockhosts/

This is a beta release, and my first attempt at Python coding.
Any comments, suggestions, pointers on using more common Python idioms
or example coding snippets, etc, welcome!

Thanks!



From lsumnler at gmail.com  Thu May 19 10:01:21 2005
From: lsumnler at gmail.com (len)
Date: 19 May 2005 07:01:21 -0700
Subject: newbie file/DB processing
In-Reply-To: <kp8o81dpjc5dhg6ugduv67kbnbfni84dar@4ax.com>
References: <1116445969.381550.99280@f14g2000cwb.googlegroups.com>
	<kp8o81dpjc5dhg6ugduv67kbnbfni84dar@4ax.com>
Message-ID: <1116511281.424349.138670@o13g2000cwo.googlegroups.com>

Thanks for the reply

Everyone seems to be saying the same thing which is jump into some
RDBM.

Len Sumnler



From http  Tue May 24 15:44:05 2005
From: http (Paul Rubin)
Date: 24 May 2005 12:44:05 -0700
Subject: reference counting and file objects
References: <slrnd8kf7b.40a.jtr@ofb.net> <7xoeb94r3j.fsf@ruckus.brouhaha.com>
	<428a40e1$0$29930$9b622d9e@news.freenet.de>
	<1116953438.844243.32800@f14g2000cwb.googlegroups.com>
	<42937FCA.6080800@v.loewis.de>
Message-ID: <7xzmukjtoa.fsf@ruckus.brouhaha.com>

"Martin v. L?wis" <martin at v.loewis.de> writes:
> > lines = file("myfile","r").readlines()
> > 
> > have any better guarantee of being closed automatically? 
> 
> Yes. The file object only lives on the evaluation stack,
> and that is discarded in any case when the function terminates
> (whether through a return or through an exception). In
> addition, the object is released as soon as readlines
> returns.

It's released even if the exception is raised inside readlines?


From http  Wed May 11 02:41:40 2005
From: http (Paul Rubin)
Date: 10 May 2005 23:41:40 -0700
Subject: pyvm -- faster python
References: <mailman.164.1115548611.29826.python-list@python.org>
	<1115561483.741761.212140@f14g2000cwb.googlegroups.com>
	<m102l2-9qr.ln1@home.rogerbinns.com>
	<mailman.264.1115716603.29826.python-list@python.org>
	<vu38l2-k5v.ln1@home.rogerbinns.com>
	<7xvf5qbir1.fsf@ruckus.brouhaha.com>
	<nt98l2-1e.ln1@home.rogerbinns.com>
	<7xpsvymlse.fsf@ruckus.brouhaha.com>
	<b0j8l2-ip1.ln1@home.rogerbinns.com>
Message-ID: <7xoebijmcb.fsf@ruckus.brouhaha.com>

"Roger Binns" <rogerb at rogerbinns.com> writes:
> Some examples are gui toolkits (eg wxPython), SSL (eg M2Crypto, pyopenssl)
> and database (pysqlite, APSW).  These aren't in the shipped with Python
> library but are widely used.

M2Crypto is a straightforward SWIG wrapper around OpenSSL, I thought.
I don't know about wxPython or pysqlite.  It seems to me that some
kind of SQL client should be part of the stdlib.  But why isn't a SWIG
wrapper enough?  The CPython stdlib has for possibly good reasons
avoided SWIG but a new implementation doesn't need to.

> You don't have to stay backwards compatible.  It is best to provide
> some sort of way of using the old extensions even if it is suboptimal
> (eg some sort of mapping shim).

Yeah, there's something to be said for that, if it doesn't cause too
much pain.

> I already get burnt out on the matrix of CPython versions and different
> platforms.  Adding another interpretter would make life even harder
> for extension authors.

There's already Jython and Python.net is on its way.  This is
something Lisp users have dealt with for decades and they've developed
workable machinery for it.  Maybe Python can adopt some of those
methods.


From sxanth at ceid.upatras.gr  Fri May 13 05:29:37 2005
From: sxanth at ceid.upatras.gr (Stelios Xanthakis)
Date: Fri, 13 May 2005 12:29:37 +0300
Subject: pyvm -- faster python
In-Reply-To: <1115925027.360010.183480@g49g2000cwa.googlegroups.com>
References: <mailman.164.1115548611.29826.python-list@python.org>
	<1115561483.741761.212140@f14g2000cwb.googlegroups.com>
	<m102l2-9qr.ln1@home.rogerbinns.com>
	<mailman.264.1115716603.29826.python-list@python.org>
	<vu38l2-k5v.ln1@home.rogerbinns.com>
	<7xvf5qbir1.fsf@ruckus.brouhaha.com>
	<nt98l2-1e.ln1@home.rogerbinns.com>
	<7xpsvymlse.fsf@ruckus.brouhaha.com>
	<1115791624.856252.247890@z14g2000cwz.googlegroups.com>
	<7x1x8el18e.fsf@ruckus.brouhaha.com>
	<1115876410.813839.222080@g43g2000cwa.googlegroups.com>
	<mailman.441.1115886157.29826.python-list@python.org>
	<1115925027.360010.183480@g49g2000cwa.googlegroups.com>
Message-ID: <42847381.9010800@ceid.upatras.gr>

Hi,

Kay Schluehr wrote:
> 
> Why this? eval() consumes a string, produces a code object and executes
> it. Wether the code-object is bytecode or a chunk of machine code makes
> a difference in the runtime but does not alter the high level
> behavioural description of eval(). In either way the compile() function
> behind eval is a JIT.
> 

It makes a difference because
1) You depend on a compiler. Especially if you want to optimize the
machine code you depend on a big program (no tcc for example)
2) Optimizing machine code, needs a lot of code/time.
3) What about debugging info? Dwarf?
4) What if there's a new architecture?

The bytecode compiler is *much* faster to produce the bytecode assembly.


Also, for the other part of the thread, I think that bytecode may
be in fact faster than machine code JIT.  Here is a theory:

Suppose that for each algorithm there is the "ideal implementation"
which executes at the speed limit where it can't be done any faster.
For small algorithms the speed limit may be known but for more
complex programs, it's just a theoretical limit.  Now for such very
big programs bytecode has the advantage that it achieves very good
code re-use;  everything is those 400kB of the libpython core and that
does not increase with the size of the program.  In this case, bytecode
is the driver that operates the buldozer (the buldozer being C).  So the
theory is that for very complex programs a bytecode+core-library is
closer to the ideal implementation than a JIT which produces/compiles
megabytes of machine code.

Evidence for that may be that all those JIT efforts don't get any
great speed ups (psyco is different as it exposes static-ness).

Of course, if we care about speed we'll use Pyrex to convert some
heavy routines to C.  For example if we need FFT, it's madness to
do it in the HLL.  Make it part of the buldozer.



Stelios


From jepler at unpythonic.net  Wed May 18 19:02:00 2005
From: jepler at unpythonic.net (Jeff Epler)
Date: Wed, 18 May 2005 18:02:00 -0500
Subject: iso_8859_1 mystery/tkinter
In-Reply-To: <428BBAEA.4070806@anvilcom.com>
References: <mailman.154.1116432329.8733.python-list@python.org>
	<mailman.158.1116437716.8733.python-list@python.org>
	<d6g499$d5s$2@news4.zwoll1.ov.home.nl>
	<428BBAEA.4070806@anvilcom.com>
Message-ID: <20050518230200.GB9427@unpythonic.net>

this isn't about the "sign bit", it's about assumed encodings for byte
strings..

In iso_8859_1 and unicode, the character with value 0xb0 is DEGREE SIGN.
In other character sets, that may not be true---For instance, in the
Windows "code page 437", it is u'\u2591' aka LIGHT SHADE (a half-tone pattern).

When you write code like
    x = '%c' % (0xb0)
and then pass x to a Tkinter call, Tkinter treats it as a string encoded
in some system-default encoding, which could give DEGREE SIGN, could
give LIGHT SHADE, or could give other characters (a thai user of Windows
might see THAI CHARACTER THO THAN, for instance, and I would see a
question mark because I use utf-8 and this is an invalid byte sequence).

By using
    x = u'%c' % (0xb0)
you get a unicode string, and there is no confusion about the meaning of
the symbol---you always get DEGREE SIGN.

Jeff
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From sateeshkavuri at yahoo.com  Tue May 24 04:56:56 2005
From: sateeshkavuri at yahoo.com (Sateesh)
Date: Tue, 24 May 2005 08:56:56 GMT
Subject: Access lotus notes using Python
References: <lWike.155$NV3.3324@news1.nokia.com>
	<UEjke.447$2u1.383@newssvr19.news.prodigy.com>
	<prk9m2-2gi.ln1@nb2.stroeder.com>
	<Vdrke.1084$uu.291@newssvr33.news.prodigy.com>
	<ALAke.264$_k2.4238@news2.nokia.com>
	<1116921752.615735.187040@g47g2000cwa.googlegroups.com>
Message-ID: <s%Bke.273$_k2.4733@news2.nokia.com>

Hi,
Thanks very much for the input. Could you please tell me where I could get
the API reference for these COM classes to access Lotus Notes?

Thanks again
Sateesh
<jmgouzit at gmail.com> wrote in message
news:1116921752.615735.187040 at g47g2000cwa.googlegroups.com...
> try this
>
> import win32com.client
> session = win32com.client.Dispatch('Lotus.NotesSession')
> session.Initialize(r'pppppppp')
> db = session.GetDatabase('',r'dddddddd.nsf')
> view = db.GetView(r'vvvvvvvv')
> doc = view.GetFirstDocument()
> print doc.GetFirstItem('iiiiii').Values
>
> domino return string as unicode
>




From johnandsarah at estragon.freeserve.co.uk  Sat May 28 06:48:07 2005
From: johnandsarah at estragon.freeserve.co.uk (John Perks and Sarah Mount)
Date: Sat, 28 May 2005 11:48:07 +0100
Subject: UTF16 codec doesn't round-trip?
Message-ID: <d7ajce$go8$1@newsg3.svr.pol.co.uk>

(My Python uses UTF16 natively; can someone with UTF32 Python let me
know if that behaves differently?)

>>> import codecs
>>> u'\ud800' # part of surrogate pair
u'\ud800'
codecs.utf_16_be_encode(_)[0]
'\xd8\x00'
codecs.utf_16_be_decode(_)[0]
Traceback (most recent call last):
  File "<input>", line 1, in ?
UnicodeDecodeError: 'utf16' codec can't decode bytes in position 0-1:
unexpected end of data

If the ascii can't be recognized as UTF16, then surely the codec
shouldn't have allowed it to be encoded in the first place? I could
understand if it was trying to decode ascii into (native) UTF32.

On a similar note, if you are using UTF32 natively, are you allowed to
have raw surrogate escape sequences (paired or otherwise) in unicode
literals?

Thanks

John




From david.g.morgenthaler at comcast.net  Mon May 23 01:12:10 2005
From: david.g.morgenthaler at comcast.net (david.g.morgenthaler at comcast.net)
Date: Sun, 22 May 2005 23:12:10 -0600
Subject: GridCellEditor
References: <d6pcha$2jll$1@pandora.alkar.net>
Message-ID: <ggp2919m25dv8p1jbqn3h55u8sgop2ol3d@4ax.com>

On Sun, 22 May 2005 10:29:50 +0300, "gralex" <gralex1974 at ua.fm> wrote:

>Hi,all!
>
>How i can manually start CellEditor in wxGrid for spicified Cell in grid in 
>my programm:
>
>mygrid.SetGridCursor(2,3)
>mygrid.MakeCellVisible(2,3)
>#.... starting editing....... ??????????????
>mygrid.ShowCellEditControl() don't working...
>
>help me, please... 
>
Try:
mygrid..EnableCellEditControl(True)


From Jan.Wienhausen at Physnet.uni-hamburg.de  Wed May 18 08:39:43 2005
From: Jan.Wienhausen at Physnet.uni-hamburg.de (Jan Wienhausen)
Date: Wed, 18 May 2005 14:39:43 +0200
Subject: soundcard readout on a windows system
Message-ID: <d6fd1k$bio$1@rzsun03.rrz.uni-hamburg.de>

Hi,
I would like to read out the soundcard with python on a win system. Is 
there any possibillity to do so?

Thanks,
Jan


From none  Wed May 11 11:56:56 2005
From: none (Hansan)
Date: Wed, 11 May 2005 17:56:56 +0200
Subject: Problem combining python code and html
Message-ID: <42822b3d$0$653$ba624c82@nntp02.dk.telia.net>

Hi all, I hope you have time to help me out a little. My problem is that I 
want to combine some python code I have made with some html templates, I 
found a tutorial at dev shed: 
http://devshed.spunge.org/Server_Side/Python/CGI/page6.html
and : http://devshed.spunge.org/Server_Side/Python/CGI/page5.html and tried 
to do it like they do, but it doesn't work.

I used the same code they use for making the two display functions and the 
same template for the html form. I even tried using the form template they 
use too, but it still dosnt work. I will now show how the functions and 
templates look like.

The two display functions are:
def Display(Content):
    TemplateHandle = open(TemplateFile, "r")
    TemplateInput = TemplateHandle.read()
    TemplateHandle.close()
    BadTemplateException = "There was a problem with the HTML template."
    SubResult = re.subn("<!-- *** INSERT CONTENT HERE *** -->", 
Content,TemplateInput)
    if SubResult[1] == 0:
        raise BadTemplateException

    print "Content-Type: text/html\n\n"
    print SubResult[0]

def DisplayForm():
    FormHandle = open(FormFile, "r")
    FormInput = FormHandle.read()
    FormHandle.close()
    Display(FormInput)

The html template form is:
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN">
<html>
  <head>
    <META NAME="something" CONTENT="Somethingelse">
    <title>Title</title>
  </head>
  <body>
                <!-- *** INSERT CONTENT HERE *** -->
  </body>
</html>

and the form template is:
<FORM METHOD="POST" ACTION="name.py">
<p>Signin number:<br> <INPUT type="text" NAME="playerid">
<p>Code:<br> <INPUT type="password" NAME="password"></p>
<input type=hidden name="action" value= tjeck >
<p><input type=submit value='Send'></p></form>

A very simple code that should tjeck if the code works could be

#!/pack/python-2.3.2/bin/python2.3
import re
import cgi

FormFile = "forma.html"
TemplateFile = "template.html"

def Display(Content):
    TemplateHandle = open(TemplateFile, "r")
    TemplateInput = TemplateHandle.read()
    TemplateHandle.close()
    BadTemplateException = "There was a problem with the HTML template."
    SubResult = re.subn("<!-- *** INSERT CONTENT HERE *** -->", 
Content,TemplateInput)
    if SubResult[1] == 0:
        raise BadTemplateException

    print "Content-Type: text/html\n\n"
    print SubResult[0]


def DisplayForm():
    FormHandle = open(FormFile, "r")
    FormInput = FormHandle.read()
    FormHandle.close()
    Display(FormInput)


if not form.has_key('action'):
    DisplayForm()
else:
    print "I had a key"

The meaning of this little code is, that the first time the script is run, 
the form has to be displayed, and when the submit button is pressed the 
script reloades, now the script has the key "action" and something else is 
being done. But I get the error message:
error: multiple repeat
      args = ('multiple repeat',) ", Content,TemplateInput) File 
"/home//Python-2.3.2//lib/python2.3/sre.py", line 151, in subn return 
_compile(pattern, 0).subn(repl, string, count)
I tried making the templates global, but that dosnt help either.
Is the code from dev shed wrong, or am I doing something wrong.
And is there a nother way to combine python code and html templates?
Thanks for your time 




From jaydonnell at gmail.com  Wed May  4 19:35:51 2005
From: jaydonnell at gmail.com (jdonnell)
Date: 4 May 2005 16:35:51 -0700
Subject: adodb, sql server, and last insert id
In-Reply-To: <mailman.64.1115085892.6583.python-list@python.org>
References: <1115078248.036051.182310@l41g2000cwc.googlegroups.com>
	<mailman.64.1115085892.6583.python-list@python.org>
Message-ID: <1115249751.231713.97200@g14g2000cwa.googlegroups.com>

Thanks for the reply. I found that before I posted, but that doesn't
look thread safe and I haven't found anything that says it is or isn't.



From sjmachin at lexicon.net  Wed May 11 20:55:40 2005
From: sjmachin at lexicon.net (John Machin)
Date: Thu, 12 May 2005 10:55:40 +1000
Subject: Problems with csv module
References: <d5sngn$l4$03$1@news.t-online.com><mailman.338.1115809896.29826.python-list@python.org><d5spph$ktm$01$1@news.t-online.com><a4r381p3s5uhud58tvd2m2nod1ebmo48u0@4ax.com><d5tc55$q3e$1@sea.gmane.org>
	<17026.15830.303909.792010@montanaro.dyndns.org>
	<mailman.386.1115834572.29826.python-list@python.org>
Message-ID: <4n8581hlta0e1jbp0nidliuam6fmb08nv1@4ax.com>

On Wed, 11 May 2005 20:02:25 +0200, "Fredrik Lundh"
<fredrik at pythonware.com> wrote:

>Skip Montanaro wrote:
>
>>     Fredrik> does the CSV format even support Unicode-encoded data streams?
>>
>> Based on the requests I've seen here and on the csv at mojam.com mailing list,
>> it appears people are certainly generating CSV files which contain Unicode-
>> encoded data.
>
>in what encodings?
>
>is the encoding specified inside the file?  if so, how?
>
>(it should be noted that the phrase "Unicode-encoded data" that I
>used doesn't make much sense, even in the original context.  what
>I meant to say was that CSV, as far as I know, isn't defined as a
>stream of Unicode character, but rather as a stream of bytes in an
>ASCII-compatible encoding.  this means that you can use e.g. ISO-
>8859-1 or UTF-8 for string values, but not that you can encode the
>whole thing as, say UTF-16 or UCS-4).

The CSV format is not defined at all, AFAIK.

Empirically, writing CSV works more-or-less like this, for each row:
# pseudocode, untested
control_chars = '\r\n' # or maybe more or maybe just '\n'
out_list = []
for each field:
    if field contains quote_char:
        out_field = quote_char + \
            field.replace(quote_char, quote_char + quote_char) + \
            quote_char
    elif field contains any one of delimiter or control_chars:
         out_field = quote_char + field + quote_char
    else:
         out_field = field
    out_list.append(out_field)

then you write delimiter.join(out_list) followed by "\r\n"

So there is no reason at all why a writer and a reader couldn't use
the above quoting mechanism to transfer columnar data containing
Unicode -- they just have to agree on the encoding, control
characters, quote_char, delimiter, and line terminator.

Excel (see my other post in this thread) provides a writing ("save as
Unicode text") and reading mechanism which uses u'\t' as the
delimiter, u'\r\n' as the line terminator, u'\"' as the quote_char,
and utf-16 as the encoding. I haven't done an exhaustive check to see
what its definition of control_chars would be.




From steve at REMOVETHIScyber.com.au  Sun May 29 07:42:54 2005
From: steve at REMOVETHIScyber.com.au (Steven D'Aprano)
Date: Sun, 29 May 2005 21:42:54 +1000
Subject: Is there a better way of doing this?
References: <d79re2$sgg$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
Message-ID: <pan.2005.05.29.11.42.53.412990@REMOVETHIScyber.com.au>

On Sat, 28 May 2005 13:24:19 +0000, Michael wrote:

> Hi,
> I'm fairly new at Python, and have the following code that works but isn't
> very concise, is there a better way of writing it?? It seems much more
> lengthy than python code i have read..... :-)
> (takes a C++ block and extracts the namespaces from it)


Does it work? If Yes, then "if it works, don't fix it".

Is it fast enough? If Yes, then "don't optimise prematurely".

Does it do everything you need it to do? If Yes, then "know when to stop
programming".

Is it written in good Python style? If Yes, then "leave it alone".

The last one is the most difficult, because nobody agrees what good
Python style is. A lot of it depends on who is going to be reading your
code. Personally, I worry about folks who try to turn every piece of code
into a one-liner. If you want to write perl, write perl. Just because you
can write something as a nested list comprehension doesn't mean you should.

Having said that, I'll make some stylistic suggestions:
 
> def ExtractNamespaces(data):
>  print("Extracting Namespaces")

print is a statement, not a function. The brackets are syntactically
correct, but pointless. Remove them.

>  p = re.compile( 'namespace (?P<name>[\w]*)[\n\t ]*{')
> 
>  subNamespaces = []
> 
>  newNS = p.search(data)
>  while( newNS ):

Guido (our Benevolent Dictator For Life and creator of Python) hates
seeing whitespace next to parentheses. I agree with him. while(newNS)
good, while( newNS ) bad.

See http://www.python.org/doc/essays/styleguide.html for Guido's
suggestions.

>   print "\t" + newNS.group("name")
> 
>   OPCount = 1
>   Offset = newNS.end()
>   while(OPCount > 0):
>    if( data[Offset] == "}" ):

See above comment about whitespace inside brackets.

More importantly, you don't need the brackets at all. You can write:

if data[Offset] == "}":

which is less visually confusing. The only time I use brackets in an if
statement is to clarify complex Boolean expressions, eg

if myFlag and ((somevalue == 3) or (num_fibberts != 1)):

Otherwise, drop the brackets.

>     OPCount = OPCount -1;

You aren't writing Pascal or C now, so you don't need the semi-colon. The
semi-colon isn't wrong, as such, since Python allows you to put multiple
statements on a single line separated with semi-colons, but it isn't
recommended and will give away the fact that you are (1) a newbie and (2)
not really comfortable with Python.

In more recent versions of Python, you can also write that as OPCount -= 1

>    elif( data[Offset] == "{" ):
>     OPCount = OPCount + 1;
>    Offset = Offset+1;

Again, drop the brackets from the elif statement and the semi-colons. Not
the colons, they are required!

>   #Extract Data:

More comments! Comments are good. There are those who claim that you
should write more comments than code. I don't quite agree with that, but
more detailed comments would not go astray.

>   newNSData = data[newNS.end():Offset-1] 
>   data = data[0:newNS.start()] + data[Offset:]
>   newNamespace = [newNS.group("name"), newNSData];
>   subNamespaces.append(newNamespace)

By now you should be sick of me telling you not to use semi-colons.

>   #Perform NewSearch
>   newNS = p.search(data)
>  return [subNamespaces,data]

A single space after commas helps make the phrase more readable.

Other than those stylistic comments, and the need for more comments, it
looks good to me.


-- 
Steven




From bokr at oz.net  Mon May 16 13:31:18 2005
From: bokr at oz.net (Bengt Richter)
Date: Mon, 16 May 2005 17:31:18 GMT
Subject: question about the id()
References: <428809fc.62d7a08a.1cfe.ffffd7ef@mx.gmail.com>
	<mailman.23.1116212733.8733.python-list@python.org>
	<873bsnxhe0.fsf@hector.domek>
	<pan.2005.05.16.16.57.10.396536@dalkescientific.com>
Message-ID: <4288d8a8.86909138@news.oz.net>

On Mon, 16 May 2005 16:57:12 GMT, Andrew Dalke <dalke at dalkescientific.com> wrote:

>Peter Dembinski wrote:
>> So, the interpreter creates new 'point in address space' every time
>> there is object-dot-method invocation in program?
>
>Yes.  That's why some code hand-optimizes inner loops by hoisting
>the bound objection creation, as
>
>data = []
>data_append = data.append
>for x in some_other_data:
>  .... work with x to make y ....
>  data_append(y)
>
Sorry about the me-too. I hadn't seen your post. I should know better ;-)

Regards,
Bengt Richter


From http  Wed May 11 00:25:21 2005
From: http (Paul Rubin)
Date: 10 May 2005 21:25:21 -0700
Subject: pyvm -- faster python
References: <mailman.164.1115548611.29826.python-list@python.org>
	<1115561483.741761.212140@f14g2000cwb.googlegroups.com>
	<m102l2-9qr.ln1@home.rogerbinns.com>
	<mailman.264.1115716603.29826.python-list@python.org>
	<vu38l2-k5v.ln1@home.rogerbinns.com>
	<7xvf5qbir1.fsf@ruckus.brouhaha.com>
	<nt98l2-1e.ln1@home.rogerbinns.com>
Message-ID: <7xpsvymlse.fsf@ruckus.brouhaha.com>

"Roger Binns" <rogerb at rogerbinns.com> writes:
> Err, you proved my point!  Prothon was fine at the VM level.  The
> author couldn't figure out how to get a decent sized "standard"
> library, and ultimately ended up abandoning his VM for .Net since
> that gets you a large standard library.  Jython also gets a large
> standard library from the Java ones.

What kind of stuff is in the existing Python C library that couldn't
be reimplemented or retargeted pretty easily?  Most of it is either
wrappers for standard C functions (system calls), stuff that shouldn't
be in C in the first place (the Python compiler and interpreter), etc.

I hope that PyPy will replace CPython once it's solid enough.  Trying
to stay backwards compatible with the legacy C API doesn't seem to me
to be that important a goal.  Redoing the library may take more work
than the Prothon guy was willing to do for Prothon, but PyPy has more
community interest and maybe can attract more resources.


From teamuhlig at gmail.com  Wed May 18 11:37:00 2005
From: teamuhlig at gmail.com (john67)
Date: 18 May 2005 08:37:00 -0700
Subject: Is Python suitable for a huge, enterprise size app?
Message-ID: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>

The company I work for is about to embark on developing a commercial
application that will cost us tens-of-millions to develop.  When all is
said and done it will have thousands of  business objects/classes, some
of which will have hundreds-of-thousands of instances stored in a DB.
Our clients will probably have somewhere between 50-200 users working
on the app during the day, possibly in mutiple offices, and then a
large number of batch processes will have to run each night.  It will
also need to have a web interface for certain users.  It needs to be
robust, easy to maintain, and able to be customized for each client.

Right now it looks like Java is the language of choice that the app
will be developed in. However, I have been looking and reading a lot
about Python recently and it seems to me that Python could handle it.
The big attraction to me is the developer productivity.  It seems that
if Python can handle it, then we could gain a huge savings by using
Python instead of Java from a productivity standpoint alone.

So, given the very general requirements in the first paragraph, do you
think that Python could handle it?  If anyone has direct experience
developing large apps in Python, I would appreciate your insight.
Based on the responses I get, I am planning on writing a proposal to my
management to consider Python instead of Java.

Thanks,
John



From francescomoi at europe.com  Fri May 13 09:56:02 2005
From: francescomoi at europe.com (francescomoi at europe.com)
Date: 13 May 2005 06:56:02 -0700
Subject: MySQL: 'latin-1' codec can't encode character
In-Reply-To: <mailman.24.1115991548.29328.python-list@python.org>
References: <1115990748.006171.96240@g49g2000cwa.googlegroups.com>
	<mailman.24.1115991548.29328.python-list@python.org>
Message-ID: <1115992562.777210.49050@o13g2000cwo.googlegroups.com>

Hi Fredrik.

Thank you very much for your quick answer.

Do you suggest to change it by using regexp or must I encode the whole
texto into a suitable one?

Regards.

Fredrik Lundh wrote:
> "francescomoi at europe.com"
>
> > I'm trying to store a text within a MySQL field (v 3.23.58) by
using
> > MySQLdb
> > (v 1.2.1c3).
> >
> > The text is: "telephone..." (note the last character)
> >
> > And I get this error message:
> > -----------
> > File "/usr/lib/python2.3/site-packages/MySQLdb/connections.py",
line
> > 33, in defaulterrorhandler
> >     raise errorclass, errorvalue
> > UnicodeEncodeError: 'latin-1' codec can't encode character
u'\u2026' in
> > position 288: ordinal not in range(256)
> > -----------------------
> >
> > Position 288 is the character I've mentioned. I suppose I must
encode
> > this caracter
> > into a right one which MySQL could store, but I have no idea about
how
> > to perform
> > it. Any suggestion?
>
> the character \u2026 is not part of the ISO-8859-1 character set.  if
you
> insist on storing that in 8-bit string, you have to find an 8-bit
encoding
> that includes that character (UTF-8 is one such alternative).
>
> if MySQL is set to store ISO-8859-1 only, you can replace the
character
> with it with three periods, drop it (use the "ignore" encoding
option) or
> replace it with a suitable marker (use the "replace" encoding
option).
> 
> </F>



From luismgz at gmail.com  Mon May 16 01:56:56 2005
From: luismgz at gmail.com (Luis M. Gonzalez)
Date: 15 May 2005 22:56:56 -0700
Subject: installing mod_python with python 2.4 on Windows xp
In-Reply-To: <1116221513.055871.238690@z14g2000cwz.googlegroups.com>
References: <c56b627e.0505151952.447670ee@posting.google.com>
	<1116221513.055871.238690@z14g2000cwz.googlegroups.com>
Message-ID: <1116223016.966152.259370@z14g2000cwz.googlegroups.com>

Thanks for the suggestion.
The reason I didn't post this question in mod_python's list is because
somebody already asked this question there, but he got only one reply.
Anyway I followed this advice but it didn't work, so I thought that
maybe I could get the answer here.

I'll try again though to see what happens...
Thanks!
Luis



From claw at kanga.nu  Sun May  8 18:59:40 2005
From: claw at kanga.nu (J C Lawrence)
Date: Sun, 8 May 2005 15:59:40 -0700
Subject: How to implement multiple constructors
References: <1115588999.677872.174250@z14g2000cwz.googlegroups.com>
Message-ID: <20050508225938.29816.45261.XPN@kanga.nu>

tron.thomas at verizon.net wrote:

> I am a C++ developer with only a little experience using Python.  I
> want to create a Python class where by I can construct an instance from
> that class based on one of two different object types.

The approaches I've seen used are to  use a new class method as an
alternate ctor with a special name, and to use the types module for type
comparison within such a ctor.

--
J C Lawrence                        They said, "You have a blue guitar,
---------(*)                        You do not play things as they are."
claw at kanga.nu                       The man replied, "Things as they are
http://www.kanga.nu/~claw/          Are changed upon the blue guitar."




From lists.munckfish at blueyonder.co.uk  Sun May 22 11:01:26 2005
From: lists.munckfish at blueyonder.co.uk (Dan M)
Date: Sun, 22 May 2005 15:01:26 GMT
Subject: Parsing XML - Newbie help
In-Reply-To: <1116701614.858127.105550@g47g2000cwa.googlegroups.com>
References: <1116701614.858127.105550@g47g2000cwa.googlegroups.com>
Message-ID: <a91ke.5001$iq5.330@fe1.news.blueyonder.co.uk>

Hi

rh0dium wrote:
> I am relatively new to python and certainly new to XML parsing.  

Me too. However there are plenty of good docs/tutorials available to 
help with both XML and using it in Python.

For XML you may wish to look at http://www.w3schools.com/. It has a very 
accessible set of tutorials on XML and related technologies, which I 
find make it very quick to get up and running. For what you are trying 
to do you may wish to look at XPath, or ideally XQuery although I'm not 
sure there is an XQuery implementation in Python.

For Python and XML there is Mark Pilgrim's excellent chapter on Parsing 
XML with xml.dom.minidom 
(http://diveintopython.org/xml_processing/index.html).

The is also the PyXML project at Sourceforge 
(http://pyxml.sourceforge.net/). A list of useful links is maintained 
there (http://pyxml.sourceforge.net/topics/).

You may also wish to investigate resources at the Python XML SIG page 
(http://www.python.org/sigs/xml-sig/).

These are just some of the sources of information I am using. Hope this 
helps.

Cheers

Dan



From jaime.suarez at crossmatch.net  Fri May 13 13:07:46 2005
From: jaime.suarez at crossmatch.net (jaime.suarez at crossmatch.net)
Date: 13 May 2005 10:07:46 -0700
Subject: tkFileDialog question
In-Reply-To: <mailman.507.1115947307.29826.python-list@python.org>
References: <1115937784.883303.131080@f14g2000cwb.googlegroups.com>
	<mailman.507.1115947307.29826.python-list@python.org>
Message-ID: <1116004066.138533.166560@g14g2000cwa.googlegroups.com>

James, thank you very much for your answer.
Jaime



From john at castleamber.com  Fri May 13 12:28:20 2005
From: john at castleamber.com (John Bokma)
Date: 13 May 2005 16:28:20 GMT
Subject: New Python regex Doc
References: <1113301533.054410.203710@z14g2000cwz.googlegroups.com>
	<1113908069.264676.207090@g14g2000cwa.googlegroups.com>
	<1115328523.852744.110390@f14g2000cwb.googlegroups.com>
	<1115423751.016177.250650@o13g2000cwo.googlegroups.com>
	<1115444726.627426.172260@g14g2000cwa.googlegroups.com>
	<1115508491.462229.294020@o13g2000cwo.googlegroups.com>
	<mailman.155.1115511845.29826.python-list@python.org>
	<1115972089.922875.108380@g14g2000cwa.googlegroups.com>
	<Xns96552462DEE8Fcastleamber@130.133.1.4>
	<zm2he.24808$Jc5.23644@fe1.news.blueyonder.co.uk>
Message-ID: <Xns965574B4050DEcastleamber@130.133.1.4>

 wrote:

> In comp.lang.perl.misc John Bokma <john at castleamber.com> wrote:

[ @55, |@#~~|!! ]

> Oh please let him use an ass...

Ok, he is allowed to use ass in examples, e.g. (Perl)

s/ass/domesticated donkey/g;

(Maybe to explain \b ? )

-- 
John                   Small Perl scripts: http://johnbokma.com/perl/
               Perl programmer available:     http://castleamber.com/
            Happy Customers: http://castleamber.com/testimonials.html
                        


From fredrik at pythonware.com  Tue May 10 02:50:09 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 10 May 2005 08:50:09 +0200
Subject: Exception in Python 2.3.3 Interpreter
References: <1114434259.853654.272420@z14g2000cwz.googlegroups.com><d5n76t$pe0$2@news.mch.sbs.de><mailman.202.1115642452.29826.python-list@python.org>
	<d5ph21$2l9$2@news.mch.sbs.de>
Message-ID: <d5pl59$uqe$1@sea.gmane.org>

"Saravanan D" wrote:

> > > 03 023ffaa4 1e013182 00000000 055b1250 00637470 python23!cmp_outcome(int
> op
> > > = 88026108, struct _object * v = 0x00000001, struct _object * w =
> > > 0x00000000)+0xa9 [F:\Python-2.3.3\Python-2.3.3\Python\ceval.c @ 3880]
> > > 04 023ffb18 1e016ba4 014f3318 00000002 0099f170
> python23!eval_frame(struct
> > > _frame * f = 0x053f2bfc)+0x542
> [F:\Python-2.3.3\Python-2.3.3\Python\ceval.c
> > > @ 1965]
> > > 05 023ffb30 1e016a69 0099f170 023ffb7c 00000002
> > > python23!fast_function(struct _object * func = <Memory access error>,
> struct
> > > _object *** pp_stack = <Memory access error>, int n = <Memory access
> error>,
> > > int na = <Memory access error>, int nk = <Memory access error>)+0x94
> >
> > the above doesn't look very healthy.  does your application involve
> > non-standard extensions (including extensions you've written your-
> > self)?  does the extensions contain callbacks into Python code?
> >
>
> My application uses extension modules which devliers the callbacks to Python
> Code. Im using SWIG 1.3.19 version to generate relevant python interfaces
> for the C++ code.

how are you accessing the callbacks?  if you're doing that from threads
created at the C++ level, you must make sure that the thread state is
properly set up.  see:


do you keep track of the thread state, so that callbacks run in the
same state as they were registered in?

</F>





From compaq71127 at yahoo.com  Mon May 30 16:03:57 2005
From: compaq71127 at yahoo.com (compaq71127 at yahoo.com)
Date: 30 May 2005 13:03:57 -0700
Subject: (", ) Print This! Press [Ctrl][P] Keys To Print... >>
	http://www.phpbbserver.com/phpbb/viewtopic.php?t=2&mforum=anysubjectchat
	< < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < <
	< < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < <
	< < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < <
	< < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < <
Message-ID: <1117483437.158789.86320@o13g2000cwo.googlegroups.com>

(",) Print This! Press [Ctrl][P] Keys To Print... >>
http://www.phpbbserver.com/phpbb/viewtopic.php?t=2&mforum=anysubjectchat
< < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < <
< < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < <
< < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < <
< < < < < < < < < < < < < < < < < < < < < <



From grante at visi.com  Thu May  5 22:45:27 2005
From: grante at visi.com (Grant Edwards)
Date: Fri, 06 May 2005 02:45:27 -0000
Subject: How to detect a double's significant digits
References: <1115314620.902071.323410@f14g2000cwb.googlegroups.com>
	<dOtee.706030$w62.64217@bgtnsc05-news.ops.worldnet.att.net>
	<pan.2005.05.05.20.32.38.680014@jerf.org>
	<PKqdnctDV57kGOffRVn-vg@speakeasy.net>
Message-ID: <117lmi7r7etpd14@corp.supernews.com>

On 2005-05-05, Erik Max Francis <max at alcyone.com> wrote:

> Especially since all of his examples have the same number of
> significant digits (3), as the term is usually meant.  Zeroes
> to the right are significant, not zeroes to the left.

And only the person who performed the measurement knows how
many of the zeros to the right are significant.

-- 
Grant Edwards                   grante             Yow!  They don't hire
                                  at               PERSONAL PINHEADS,
                               visi.com            Mr. Toad!


From python at chrisli.org  Thu May 26 10:29:18 2005
From: python at chrisli.org (Christopher Li)
Date: Thu, 26 May 2005 10:29:18 -0400
Subject: [PATCH] add offset argument to mmap
Message-ID: <20050526142918.GA1627@64m.dyndns.org>

I am surprised to find out the mmap module in python always
mmap from offset 0. So I just hack up some patch to allow it
accept offset arguments.

So here it is.

Chris


Add optional offset argument to mmap module.

Test on linux with Python 2.4.
The windows code is totally untested.

Signed-Off-by: Christopher Li <python at chrisli.org>

Index: Modules/mmapmodule.c
===================================================================
--- Modules.orig/mmapmodule.c	2004-05-19 10:39:08.000000000 -0400
+++ Modules/mmapmodule.c	2005-05-26 10:01:51.000000000 -0400
@@ -853,14 +853,17 @@
 	mmap_object *m_obj;
 	PyObject *map_size_obj = NULL;
 	int map_size;
+	unsigned long offset = 0;
 	int fd, flags = MAP_SHARED, prot = PROT_WRITE | PROT_READ;
 	access_mode access = ACCESS_DEFAULT;
 	char *keywords[] = {"fileno", "length", 
 			    "flags", "prot", 
-			    "access", NULL};
+			    "access", "offset",
+			    NULL};
 
-	if (!PyArg_ParseTupleAndKeywords(args, kwdict, "iO|iii", keywords, 
-					 &fd, &map_size_obj, &flags, &prot, &access))
+	if (!PyArg_ParseTupleAndKeywords(args, kwdict, "iO|iiil", keywords, 
+					 &fd, &map_size_obj, &flags, &prot,
+					 &access, &offset))
 		return NULL;
 	map_size = _GetMapSize(map_size_obj);
 	if (map_size < 0)
@@ -910,7 +913,7 @@
 	m_obj->fd = fd;
 	m_obj->data = mmap(NULL, map_size, 
 			   prot, flags,
-			   fd, 0);
+			   fd, offset);
 	if (m_obj->data == (char *)-1) {
 	        m_obj->data = NULL;
 		Py_DECREF(m_obj);
@@ -929,6 +932,7 @@
 	mmap_object *m_obj;
 	PyObject *map_size_obj = NULL;
 	int map_size;
+	unsigned long offset = 0;
 	char *tagname = "";
 	DWORD dwErr = 0;
 	int fileno;
@@ -939,9 +943,9 @@
 			     "tagname", 
 			     "access", NULL };
 
-	if (!PyArg_ParseTupleAndKeywords(args, kwdict, "iO|zi", keywords,
+	if (!PyArg_ParseTupleAndKeywords(args, kwdict, "iO|zil", keywords,
 					 &fileno, &map_size_obj, 
-					 &tagname, &access)) {
+					 &tagname, &access, &offset)) {
 		return NULL;
 	}
 
@@ -1040,8 +1044,8 @@
 	if (m_obj->map_handle != NULL) {
 		m_obj->data = (char *) MapViewOfFile (m_obj->map_handle,
 						      dwDesiredAccess,
-						      0,
-						      0,
+						      offset>>32,
+						      (unsigned int)offset,
 						      0);
 		if (m_obj->data != NULL) {
 			return ((PyObject *) m_obj);


From bill.mill at gmail.com  Thu May 19 15:19:46 2005
From: bill.mill at gmail.com (Bill Mill)
Date: Thu, 19 May 2005 15:19:46 -0400
Subject: Convert from numbers to letters
In-Reply-To: <1116529140.470352.129690@z14g2000cwz.googlegroups.com>
References: <1116511005.900715.107260@o13g2000cwo.googlegroups.com>
	<1116519193.037429.93560@o13g2000cwo.googlegroups.com>
	<1116529140.470352.129690@z14g2000cwz.googlegroups.com>
Message-ID: <797fe3d4050519121930a51b76@mail.gmail.com>

On 19 May 2005 11:59:00 -0700, rh0dium <sklass at pointcircle.com> wrote:
> This is great but backwards...
> 
> Ok because you all want to know why..  I need to convert Excel columns
> A2 into , [1,0] and I need a simple way to do that..
> 
> ( The way this works is A->0 and 2->1 -- Yes they interchange --  So
> B14 == [13,1] )

why didn't you say this in the first place?

def coord2tuple(coord):
    row, col = '', ''
    alpha = 'abcdefghijklmnopqrstuvwxyz'.upper()
    pairs = [''.join((x,y)) for x in alpha for y in [''] + [z for z in alpha]]
    pairs = sorted(pairs, key=len)
    coord = coord.upper()
    for c in coord:
        if c in alpha:
            row += c
        else:
            col += c
    return (int(col)-1, pairs.index(row))

>>> coord2tuple('B14')
(13, 1)
>>> coord2tuple('ZZ14')
(13, 701)
>>> coord2tuple('ZZ175')
(174, 701)
>>> coord2tuple('A2')
(1, 0)

Are there cols greater than ZZ? I seem to remember that there are not,
but I could be wrong.

Hope this helps.

Peace
Bill Mill
bill.mill at gmail.com


From Amitpython5 at aol.com  Fri May 20 16:05:59 2005
From: Amitpython5 at aol.com (Amitpython5 at aol.com)
Date: Fri, 20 May 2005 16:05:59 EDT
Subject: Difficulty installing PyXml.
Message-ID: <219.1358c5b.2fbf9d27@aol.com>

Hello,
 
  I have python installed under a different directory  
(/images/QA/QATools12/lib/python2.1), and I'm now trying to install PyXml. It  gives me the 
following error:
-> python setup.py build
Traceback (most recent call last):
File "setup.py", line 127, in ?
config_h_vars =  parse_config_h(open(config_h))
IOError: [Errno 2] No such file or  directory:   
/images/QA/QATools12/include/python2.1/config.h'

Is there any way to circumvent this? I guess, there is some error in my  
distutils package, but I really need a way to get around this. I need PyXml  
before I can use Soapy.
 
Thanks,
Amit.
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From jeffelkins at earthlink.net  Sun May 22 01:46:44 2005
From: jeffelkins at earthlink.net (Jeff Elkins)
Date: Sun, 22 May 2005 01:46:44 -0400
Subject: SQL Query via python
In-Reply-To: <200505211500.06747.jeffelkins@earthlink.net>
References: <mailman.278.1116647826.8733.python-list@python.org>
	<voqu81dankoi6ds7vm4n0e1h9c43s004mo@4ax.com>
	<200505211500.06747.jeffelkins@earthlink.net>
Message-ID: <200505220146.44809.jeffelkins@earthlink.net>

Just as an fyi:

In one weekend I have gone from knowing zip about SQL/Python to implementing 
code on my personal server that emails info to family about birthdays and 
such. I know I could have installed other *nix programs that would do the 
same thing, but so what :)

Thanks so much to the folks on this list who took the trouble to reply. I hope 
I can pay it forward in the future.

Jeff Elkins



From flamesrock at gmail.com  Thu May 26 01:25:52 2005
From: flamesrock at gmail.com (flamesrock)
Date: 25 May 2005 22:25:52 -0700
Subject: urllib2 and SSL
In-Reply-To: <d73erd$pjm$1@solaris.cc.vt.edu>
References: <d73erd$pjm$1@solaris.cc.vt.edu>
Message-ID: <1117085151.968298.160740@f14g2000cwb.googlegroups.com>

don't you need to install openSSL?

I'm not sure.



From superprad at gmail.com  Fri May 13 14:12:48 2005
From: superprad at gmail.com (superprad at gmail.com)
Date: 13 May 2005 11:12:48 -0700
Subject: create words of various lengths
In-Reply-To: <mailman.46.1116007136.29328.python-list@python.org>
References: <1116002403.374232.210220@g49g2000cwa.googlegroups.com>
	<1116005453.047943.153790@g14g2000cwa.googlegroups.com>
	<mailman.46.1116007136.29328.python-list@python.org>
Message-ID: <1116007968.472411.300000@g44g2000cwa.googlegroups.com>

:) the reason for me not upgrading my python is I am waiting for
version of Numeric to be released for python 2.4 .The stable version of
Numeric is only release for windows and not Linux I guess the last time
i checked. which i use a lot .

Anyway thanks



From http  Thu May 12 14:57:00 2005
From: http (Paul Rubin)
Date: 12 May 2005 11:57:00 -0700
Subject: urllib download insanity
References: <4282EE0E.1080100@open-networks.net>
	<mailman.467.1115909041.29826.python-list@python.org>
Message-ID: <7xsm0s8e83.fsf@ruckus.brouhaha.com>

Skip Montanaro <skip at pobox.com> writes:
>     Timothy> downloading the OLD file i've deleted! if i download it via IE,
>     Timothy> i get the new file. SO, my only conculsion is that urllib is
>     Timothy> caching it some where. BUT i'm already calling urlcleanup(), so
>     Timothy> what else can i do?  here is the code
> 
> Is there a proxy between you and the web server?

IE also caches extremely aggressively itself.  There are a lot of
different HTTP headers that affect caching.  You have to set ALL of
them to not cache.  You have to set the cache control header AND set
an expiration date in the past, and maybe a couple other things like
that too.


From mwm at mired.org  Fri May  6 16:16:37 2005
From: mwm at mired.org (Mike Meyer)
Date: Fri, 06 May 2005 15:16:37 -0500
Subject: Getting number of iteration
References: <d5g42o$jc5$00$1@news.t-online.com>
	<mailman.103.1115395476.29826.python-list@python.org>
Message-ID: <86ll6s5cuy.fsf@guru.mired.org>

Bill Mill <bill.mill at gmail.com> writes:

> On 5/6/05, Florian Lindner <Florian.Lindner at xgm.de> wrote:
>> Hello,
>> when I'm iterating through a list with:
>> 
>> for x in list:
>> 
>> how can I get the number of the current iteration?
> Earlier:
>
> n = 0
> for x in lst:
>     print "iteration %d on element %s" % (n, x)
>     n += 1

Just for the record, the old idiom was:

for n in xrange(len(lst)):
    x = lst[n]
    print "iteration %d on element %s" % (n, x)

    <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From lreder at worldnet.att.net  Sun May 29 02:02:37 2005
From: lreder at worldnet.att.net (Leonard J. Reder)
Date: Sun, 29 May 2005 06:02:37 GMT
Subject: SWIG std::string& passing
Message-ID: <1Wcme.850166$w62.249676@bgtnsc05-news.ops.worldnet.att.net>

Hello,

I have been trying to get this simple call to work with a SWIG 
interface.  The problem is I do not know how to pass a const char * or a 
std::string & in python to SWIG wrapped code.  I tried several of the 
*.i libraries at http://www.swig.org/Doc1.3/Library.html.  Most notably 
the "std_string.i" And get the following:

 >>> w.SetDestFilename("test.bmp")
Traceback (most recent call last):
   File "<stdin>", line 1, in ?
   File 
"/home/soa/dev/users/reder/Dshell++Pkg-reder01/lib/PYTHON/Dspace/Dnoise_Py.py", 
line 1340, in SetDestFilename
     def SetDestFilename(*args): return 
_Dnoise_Py.WriterBMP_SetDestFilename(*args)
TypeError: argument number 2: a 'std::string *' is expected, 
'str(test.bmp)' is received

The C++ method is:

void WriterBMP::SetDestFilename (const std::string& filename)

This should be easy to pass the filename to?  Do you have an example? 
What do I add to the *.i file?

Thanks for any and all replies,

Len

-- 
===================================
Leonard J. Reder
Home office email : reder at ieee.org
Lab email         : reder at jpl.nasa.gov
Lab web page      : http://reder.jpl.nasa.gov
===================================


-- 
===================================
Leonard J. Reder
Home office email : reder at ieee.org
Lab email         : reder at jpl.nasa.gov
Lab web page      : http://reder.jpl.nasa.gov
===================================


From gh at ghaering.de  Mon May 23 12:33:40 2005
From: gh at ghaering.de (Gerhard Haering)
Date: Mon, 23 May 2005 18:33:40 +0200
Subject: SQL Query via python
In-Reply-To: <Phnke.1718$oT1.392@newsread1.news.pas.earthlink.net>
References: <mailman.278.1116647826.8733.python-list@python.org>
	<Phnke.1718$oT1.392@newsread1.news.pas.earthlink.net>
Message-ID: <20050523163340.GB13539@mylene.ghaering.de>

On Mon, May 23, 2005 at 04:12:31PM +0000, Austyn Bontrager wrote:
> How about:
> 
> cursor.execute("""
> 	SELECT name, month, day ,category, city FROM bday
> 	WHERE %(col_name)s = %%s
> 	""" % dict(col_name=arg1),
> 	(arg2)
> 	)
> 
> The "%(col_name)s" will be replaced by normal Python string 
> substitution, while the "%%s" will be quoted by the db module.
> 
> Watch out for SQL injection in arg1, though! Maybe check beforehand that 
> it is a string containing only word characters...

Maybe what you really need is the ability to search for two fields, or
both fields?

Here's an approach that I usually use:

- Write a search function accepting the parameters you search for.
- If you fill one of the parameters with None (in SQL: NULL), you don't
  care for its value
- This way, you can narrow your search as much as you like

Here's a quick test script, using pysqlite2 to demonstrate the approach.
It's also not meant as production code, but at least it only works with
SQL parameter binding.

- SQLite uses :name for named parameters instead of %(name)s.
- locals() is a neat hack to access the local variables as a dictionary

#v+
from pysqlite2 import dbapi2 as sqlite

con = sqlite.connect(":memory:")
cur = con.cursor()
cur.execute("create table test(a, b)")
cur.execute("insert into test(a, b) values (1, 2)")
cur.execute("insert into test(a, b) values (1, 3)")
cur.execute("insert into test(a, b) values (2, 3)")

def search(a, b):
    global cur
    cur.execute("""
        select a, b from test
        where (:a is null or a=:a)
          and (:b is null or b=:b)
          """, locals())
    return cur.fetchall()

print search(2, None)
print "-" * 50
print search(None, 3)
print "-" * 50
print search(2, 3)
#v-

-- Gerhard
-- 
Gerhard H?ring - gh at ghaering.de - Python, web & database development
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From steve at holdenweb.com  Sun May 22 09:14:43 2005
From: steve at holdenweb.com (Steve Holden)
Date: Sun, 22 May 2005 09:14:43 -0400
Subject: python24.zip
In-Reply-To: <428F8901.5000300@jessikat.fsnet.co.uk>
References: <mailman.249.1116595092.8733.python-list@python.org>	<428e0cc3$0$29954$9b622d9e@news.freenet.de>	<x7hdgw2zqi.fsf@handshake.de>
	<428F8901.5000300@jessikat.fsnet.co.uk>
Message-ID: <429085C3.8040805@holdenweb.com>

Robin Becker wrote:
> Dieter Maurer wrote:
[...]
> 
> I think this was my intention, but also I think I have some concern over
> having two possible locations for the standard library. It seems non pythonic
> and liable to cause confusion if some package should manage to install
> python24.zip while I believe that python24\lib is being used.
> 
> 
>>I recently analysed excessive import times and
>>saw thousands of costly and unneccesary filesystem operations due to:
>>
>>  *  long "sys.path", especially containing non-existing objects
>>
>>     Although non-existent, about 5 filesystem operations are
>>     tried on them for any module not yet located.
>>
>>  *  a severe weakness in Python's import hook treatment
>>
>>     When there is an importer "i" for a path "p" and
>>     this importer cannot find module "m", then "p" is
>>     treated as a directory and 5 file system operations
>>     are tried to locate "p/m". Of course, all of them fail
>>     when "p" happens to be a zip archive.
>>
>>
>>Dieter
> 
> 
> I suppose that's a reason for eliminating duplicates and non-existent entries.
> 
There are some aspects of Python's initialization that are IMHO a bit 
too filesystem-dependent. I mentioned one in

 
http://sourceforge.net/tracker/index.php?func=detail&aid=1116520&group_id=5470&atid=105470

but I'd appreciate further support. Ideally there should be some means 
for hooked import mechanisms to provide answers that are currently 
sought from the filestore.

regards
  Steve
-- 
Steve Holden        +1 703 861 4237  +1 800 494 3119
Holden Web LLC             http://www.holdenweb.com/
Python Web Programming  http://pydish.holdenweb.com/



From http  Tue May 10 13:42:37 2005
From: http (Paul Rubin)
Date: 10 May 2005 10:42:37 -0700
Subject: Unique Elements in a List
References: <1115676903.432187.294910@z14g2000cwz.googlegroups.com>
	<7xbr7jq3gb.fsf@ruckus.brouhaha.com>
	<mailman.256.1115710148.29826.python-list@python.org>
Message-ID: <7xu0lb0ygi.fsf@ruckus.brouhaha.com>

"Fredrik Lundh" <fredrik at pythonware.com> writes:
> you forgot enumerate()

Oh, oops.

> and if you fix that, you'll notice that the output doesn't quite match
> the OP's spec:
> 
>     > what I am looking for is the unique elements 0.4 and 0.9 with their
>     > index from the list.

Oh, I see, he wanted the elements that only occur once.  I misunderstood.


From http  Thu May  5 16:56:27 2005
From: http (Paul Rubin)
Date: 05 May 2005 13:56:27 -0700
Subject: Encryption with Python?
References: <1115324411.952821.150780@o13g2000cwo.googlegroups.com>
Message-ID: <7xoebpie84.fsf@ruckus.brouhaha.com>

"Blake T. Garretson" <blake.garretson at gmail.com> writes:
> I want to save some sensitive data (passwords, PIN numbers, etc.) to
> disk in a secure manner in one of my programs.  What is the
> easiest/best way to accomplish strong file encryption in Python?  Any
> modern block cipher will do: AES, Blowfish, etc.  I'm not looking for
> public key stuff; I just want to provide a pass-phrase.

http://www.nightsong.com/phr/crypto/p3.py

It uses SHA1 in OFB mode and is fairly fast for a pure Python function.

> I found a few modules out there, but they seem to be all but abandoned.
>  Most seem to have died several years ago.  The most promising package
> is A.M. Kuchling's Python Cryptography Toolkit
> (http://www.amk.ca/python/code/crypto.html).

Nice toolkit, more flexible and powerful than p3.py, but also more
complicated.


From exarkun at divmod.com  Wed May  4 17:54:20 2005
From: exarkun at divmod.com (Jp Calderone)
Date: Wed, 04 May 2005 21:54:20 GMT
Subject: Bandwith Shaping
In-Reply-To: 0
Message-ID: <20050504215420.15422.1240405332.divmod.quotient.18686@ohm>

On 4 May 2005 10:48:41 -0700, flamesrock <flamesrock at gmail.com> wrote:
>Just curious - is there an easy way to shape bandwith in python. If I
>wanted to have a max download speed for instance
>

  Twisted includes an HTB implementation.

  http://twistedmatrix.com/documents/current/api/twisted.protocols.htb.html

  Jp


From dave at pythonapocrypha.com  Mon May 16 11:28:05 2005
From: dave at pythonapocrypha.com (Dave Brueck)
Date: Mon, 16 May 2005 09:28:05 -0600
Subject: Structuring larger applications - ideas
In-Reply-To: <1116255787.625276.221670@g14g2000cwa.googlegroups.com>
References: <1116255787.625276.221670@g14g2000cwa.googlegroups.com>
Message-ID: <4288BC05.9010008@pythonapocrypha.com>

iv at lantic.net wrote:
> I'm busy with a large application and feel it would eas my work if I
> can specify dependencies on the granularity of packages, rather than
> modules and classes.  Eg:
> 
> - By convention I do the one class per file thing.  SO in python this
> means one class per module - naming classes after their modules. (this
> helps with version control, and several other little irritations, for
> example)
> - I'd like to specify once for a _package_ that it depends upon another
> _package_.
> - The following should then also be true for a module A in package X
> (which depends upon package Y):
>     1) X should be available in the namespaces of module A (in fact for
> all modules in X)
>     2) X.B should refer to X.B.B  (I name classes after their modules).
> 
> (2) Can be done easily by, eg putting the following in X.__init__.py:
>    from B import B
> 
> What's the feeling in this group about the idea & plans to get closer
> to accimplishing it?

My two cents: one of the advantages of a language like Python is that the 
project reaches an unmanageable size more slowly than in many other languages. 
As such, be wary of "importing" conventions you have used in other languages. 
Many will apply, some will not.

IMO, the one-class-per-module is a convention that in and of itself doesn't add 
much value (it drove me crazy in Java), and only accelerates your project 
towards being tough to manage - you don't want to artificially introduce 
complexity. If two classes are inherently tied together and closely related, is 
there an advantage to forcing them to live in separate files? The costs of doing 
so include manually tracking a relationship that would normally be implied and 
obvious, keeping file versions in synch (seems like this makes version control 
harder), and some extra code to bring them into each others' namespaces.

Much like a class encapsulates many details and pieces of functionality into a 
larger, more powerful building block, a module often does the same thing on a 
larger scale (and a package on an even larger one). So if it makes sense in a 
few cases to restrict yourself to a single class per module, go for it, but I 
don't see the value in adopting it as a convention (maybe I'm missing something?).

As for inter-package dependencies, what problem are you trying to solve? If you 
are trying to track dependencies for documentation purposes, you could just 
write a script to walk the source tree and detect the dependencies - it is 
information contained in the code itself, so rather than tracking it manually, 
you could just "ask" it. If you are trying to organize the overall structure of 
the project, then the consumer of that info is likely to be a person, so a piece 
  of paper, a whiteboard, or a big fat docstring might be a better suited home 
for it.

-Dave


From removethis.kartic.krishnamurthy at gmail.com  Mon May  2 18:29:38 2005
From: removethis.kartic.krishnamurthy at gmail.com (Kartic)
Date: Mon, 02 May 2005 22:29:38 GMT
Subject: How close program in the wxPython?
In-Reply-To: <1115056835.472334.163220@z14g2000cwz.googlegroups.com>
References: <1115056835.472334.163220@z14g2000cwz.googlegroups.com>
Message-ID: <mRxde.862$Jz2.175@newssvr19.news.prodigy.com>

The Great 'Tian' uttered these words on 5/2/2005 2:00 PM:
> I have made a program in wxpython, but how could i exit the program? I
> am using wxFrame for my window, what is the function to close the
> program?
> 
> Thanks!!
> 

Tian,

See below:

--- CloseDemo.pyw ----

import wx

class MainFrame(wx.Frame):
	def __init__(self, parent, id, title, size, pos,\
	style=wx.DEFAULT_FRAME_STYLE|wx.NO_FULL_REPAINT_ON_RESIZE):
		wx.Frame.__init__(self, parent, id, title, size, pos, style)
		# Bind close event here
		self.Bind(wx.EVT_CLOSE, self.OnCloseWindow)
		self.Show(True)
	
	#OnCloseWindow is executed when EVT_CLOSE is received

	def OnCloseWindow(self, evt):
		print 'OnCloseWindow() called'
		#Do other clean up action
		#and destroy frame
		self.Destroy()

app = wx.PySimpleApp()
frame = MainFrame(None, -1, "Test Close Event", (-1,-1), (-1,-1))
app.MainLoop()		

----------------------

Hope that helped.

Thanks,
-Kartic


From stephane.bronsart at teledisnet.be  Wed May 11 13:23:25 2005
From: stephane.bronsart at teledisnet.be (StepH)
Date: Wed, 11 May 2005 19:23:25 +0200
Subject: Python 2.4 & BLT ?
In-Reply-To: <mailman.317.1115769735.29826.python-list@python.org>
References: <4280f791$0$344$4d4efb8e@read.news.be.uu.net>
	<mailman.317.1115769735.29826.python-list@python.org>
Message-ID: <42823F8D.6010705@teledisnet.be>

Ron Adam a ?crit :
> StepH wrote:
> 
>> Hi,
>>
>> I'm not able to install BLT on my Python 2.4 (upgraded to 2.4.1) 
>> distibution...
>>
>> I'v try to download btlz-for-8.3.exe, but when i try to install it, 
>> i've a msgbox saying to the file is corrupt...
>>
>> Any idea ?
>>
>> Thanks.
>>
>> StepH.
> 
> 
> Have you tried blt2.4z-for-8.4exe?
> 
> http://blt.sourceforge.net

yes.  When i try to execute it, a small msgbox apprea with the msg:
Corrupt installation detected!

Any idea ?

> 
> 
> _Ron
> 
> 



From http  Thu May 12 17:51:57 2005
From: http (Paul Rubin)
Date: 12 May 2005 14:51:57 -0700
Subject: pyvm -- faster python
References: <mailman.164.1115548611.29826.python-list@python.org>
	<1115561483.741761.212140@f14g2000cwb.googlegroups.com>
	<m102l2-9qr.ln1@home.rogerbinns.com>
	<mailman.264.1115716603.29826.python-list@python.org>
	<vu38l2-k5v.ln1@home.rogerbinns.com>
	<7xvf5qbir1.fsf@ruckus.brouhaha.com>
	<nt98l2-1e.ln1@home.rogerbinns.com>
	<7xpsvymlse.fsf@ruckus.brouhaha.com>
	<1115791624.856252.247890@z14g2000cwz.googlegroups.com>
	<7x1x8el18e.fsf@ruckus.brouhaha.com>
	<3eg2vnF2psplU1@individual.net>
	<7xis1pqdt0.fsf@ruckus.brouhaha.com>
	<pan.2005.05.12.15.53.10.176970@dalkescientific.com>
	<7xbr7g8cni.fsf@ruckus.brouhaha.com>
	<d60gjc$9co$1@news.doit.wisc.edu>
Message-ID: <7xwtq4i03m.fsf@ruckus.brouhaha.com>

Rocco Moretti <roccomoretti at hotpop.com> writes:
> Python, as a procedural language, makes extensive use of globals &
> mutable variables....  IIUC, in Lisp, as a functional language, "all
> politics is local."  Global-like variables are much rarer, and
> mutability is severely limited.

Some people write Lisp code in a functional style, but not everyone.
Lisp provides mutable objects as much as Python does--maybe more,
for example, Lisp strings are mutable.  Overall I'd say there's not
much difference between Lisp and Python in this regard.  Lisp lets
the programmer supply static type declarations that the compiler
can use, but those are optional.  When you use them, you get faster
output code.


From steve at holdenweb.com  Tue May 10 07:34:54 2005
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 10 May 2005 07:34:54 -0400
Subject: sync dir's
In-Reply-To: <42809AA3.9080100@open-networks.net>
References: <428043D7.8030203@open-networks.net> <d5q3c9$aga$1@sea.gmane.org>
	<428094F9.4050007@open-networks.net>
	<42809671.3000506@holdenweb.com>
	<42809AA3.9080100@open-networks.net>
Message-ID: <42809C5E.7080706@holdenweb.com>

Timothy Smith wrote:
> Steve Holden wrote:
> 
>> Timothy Smith wrote:
>>
>>> Steve Holden wrote:
>>>
>>>> Timothy Smith wrote:
>>>>  
>>>>
>>>>> what would be the best tool to use to sync my local dir with a 
>>>>> remote one, say off a http resorce (although i'm open to other 
>>>>> options there) i haven't gotten any feed back on my problems with 
>>>>> loading pysvn on win98, and i can apprechiate if the dev's are too 
>>>>> busy/can't be bothered with win98. but i still need to find a 
>>>>> solution that can achieve the same result, and i'm starting to look 
>>>>> for other options.
>>>>>
>>>>>   
>>>>
>>>>
>>>>
>>>> You could always take a look at the ftpmirror code in the Tools 
>>>> subdirectory of your source distro. I've used that several times 
>>>> with great satisfaction, and it's fairly low-end - all you need is 
>>>> an FTP server at the other end.
>>>>
>>>> regards
>>>>  Steve
>>>>  
>>>>
>>> this has to work on both windows and nix's
>>>
>>
>> Indeed. Did I suggest anywhere that it wouldn't? The client can be any 
>> type of machine that you want, and the server can be most FTP servers.
>>
>> regards
>>  Steve
> 
> 
> oic source distro = python, i assumed you were making a linuxism
> 
Well that's because for everything but Windows (?) you only get Tools if 
you download the source. IIRC the Tools directory comes in the binary 
installer (or, at least, I have it somehow in my Windows Python 2.4, but 
not in my Cygwin Python 2.4. So I mentioned source, but the bottom line 
is that the code is accessible, even if you have to poke around for it.

Generally speaking I try to remain platform agnostic.

Since you are looking for a "low tech" solution (i.e. broadly available 
on most platforms) FTP might just do the job.

regards
  Steve
-- 
Steve Holden        +1 703 861 4237  +1 800 494 3119
Holden Web LLC             http://www.holdenweb.com/
Python Web Programming  http://pydish.holdenweb.com/


From rkern at ucsd.edu  Tue May 10 04:08:47 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Tue, 10 May 2005 01:08:47 -0700
Subject: extra a column from a 2-D array?
In-Reply-To: <04ab01c55536$8a24a720$7f00a8c0@scl01.siliconcreation.com>
References: <04ab01c55536$8a24a720$7f00a8c0@scl01.siliconcreation.com>
Message-ID: <d5ppom$btd$1@sea.gmane.org>

Joe Wong wrote:
> Hello,
>  
>  Suppose I have a python array as follow:
>  
>     s=[ [1,3,5],
>           [2,4,6],
>           [9,8,7]]
>  
> what is the quickest way to extract the second colum from all rows? That 
> is: [3,4,8] in this example.

Use Numeric. http://numeric.scipy.org

from Numeric import *
s = array([[1,3,5], [2,4,6], [9,8,7]])
print s[:,1]

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
 Are the graves of dreams allowed to die."
  -- Richard Harter



From alet at unice.fr  Mon May  9 08:13:41 2005
From: alet at unice.fr (Jerome Alet)
Date: Mon, 09 May 2005 14:13:41 +0200
Subject: [ANNOUNCE] PyKota v1.22 is out !
Message-ID: <pan.2005.05.09.12.13.41.73404@unice.fr>

I'm pleased to announce the availability of PyKota v1.22 Final.

PyKota is a 100% Python written Print Quota and Accounting solution for
CUPS and LPRng, published under the terms of the GNU General Public
License of the Free Software Foundation, and is available from :

  http://www.librelogiciel.com/software/PyKota/action_Presentation

PyKota's original distribution method consists in providing Official
tarballs, DEB and RPM packages for a yearly fee of 20 US$ (minimum), while
letting everyone download Unofficial versions of this software free of
charge by using Subversion (aka svn).

Free subscriptions to Official packages and complete paper documentation
are now included for people who prefer to purchase a technical support
contract.

Finally, single Official packages (without subscription for new releases),
can now be purchased directly and anonymously for a one time 9.99 US$ fee.

This release is a minor update, and no database changes are necessary if
you already use 1.21, so installing it should be really easy.

List of changes since 1.21 :
============================

  - Introduction of the web-enabled print quote generator :
    Install it on a web server, and people will be allowed to remotely
    know in advance how much a print job will cost to them.

  - The job's billing code, if present, is now saved into the
    database, and can serve as a filter for both the standalone
    data dumper, and the web-enabled print quota monitor and data
    dumper. Provided your printer driver allows you to enter this
    code, you'll now be able to produce invoices based on its value.
    This billing code is also made available to your pre and post hooks
    through an additionnal environment variable.

  - Printer's internal page counter retrieval was greatly improved
    with regard to both power saving mode and buggy printers.

  - The integrated banner generator now allows the admin to put
    additionnal informations dynamically onto the banner pages.

  - Diagnostic messages were greatly improved when something went
    wrong at startup time.

  - Portability was improved wrt LDAP.

  - Several stability improvements and bug fixes.

  - Greatly improved documentation.

The full list of changes is available from :

  http://www.librelogiciel.com/software/PyKota/action_News

Thank you for reading !

Jerome Alet


From flamesrock at gmail.com  Mon May 16 17:43:32 2005
From: flamesrock at gmail.com (flamesrock)
Date: 16 May 2005 14:43:32 -0700
Subject: Python RPM and CentOS
In-Reply-To: <d6aqur$hhh$1@solaris.cc.vt.edu>
References: <d6aqur$hhh$1@solaris.cc.vt.edu>
Message-ID: <1116279812.024163.168630@g49g2000cwa.googlegroups.com>

I know that gentoo has support for local repositories, and emerge is
built on python so...this would make sense. But there is a difference
between rpms and ebuilds..



From morton at lsupcaemnt.com  Wed May 18 23:37:21 2005
From: morton at lsupcaemnt.com (Ed Morton)
Date: Wed, 18 May 2005 22:37:21 -0500
Subject: Comparing 2 similar strings?
In-Reply-To: <ukqn811uo3qaa5lpihfq1fu71auuslel10@4ax.com>
References: <24a6d$428b9c10$d1b717f8$2300@PRIMUS.CA>
	<428BA05D.1010600@lsupcaemnt.com>
	<3d9n815cpmavos1fl6ts712h9qogdv3fur@4ax.com>
	<tOydnZJPi5FmeBbfRVn-3A@comcast.com>
	<ukqn811uo3qaa5lpihfq1fu71auuslel10@4ax.com>
Message-ID: <wOSdnW21Bo1qlBHfRVn-uQ@comcast.com>



John Machin wrote:

> On Wed, 18 May 2005 20:03:53 -0500, Ed Morton <morton at lsupcaemnt.com>
> wrote:
<snip>
>>I assume you were actually being facetious
>>and trying to make the point 
>>that names that don't look the same on paper can have the same soundex 
>>encoding and that's obviously countered with the fact that soundex is 
>>just a cheap and cheerful way to find names that probably sound similair 
>>which can vary tremendously based on ethnicity or accent.
> 
> 
> *If* you want phonetic similarity, there are methods that much better
> than soundex, in the sense of fewer false positives and fewer false
> negatives. Google for NYSIIS, dolby, metaphone, caverphone.

And I assume I'd find they all have pros and cons too, otherwise you'd 
be referring to THE best one rather than a selection. It seems a bit 
pointless to go browsing through the documentation on them when someone 
who presumably already has can't just state the best one for the job.

> Cheap? You get what you pay for.
> 
> Cheerful? What's the relevance?

"Cheap and cheerful" is a colloquial expression meaning cost-effective.

> Someone who types "Mousaferiadis" into a customer search screen and
> gets back several lines of McPherson and MacPherson is unlikely to be
> cheerful -- even before we factor in the speed [soundex divides the
> universe into a relative small number of buckets].
> 
> Someone who's looking for Erin when they should be looking for Aaron
> (or vice versa) won't get much cheer out of soundex, either.

That goes back to accent. In [some parts at least of] the USA Erin 
sounds very much like Aaron wheras in the UK the 2 are very dissimilar. 
I assume since you apparently consider them similair that you live in 
the USA and so would consider soundex as providing a "false negative" by 
saying they don't match. Perhaps one of the other approaches you suggest 
would report that they do match but that wouldn't make it clearly a 
better choice to everyone.

> 
>>It's a reasonable approach to consider given the very loose requirements 
>>presented.
> 
> 
> Soundex is *NEVER* a reasonable approach to consider. Phonetic
> variation is only one consideration. In any case, the OP didn't appear
> to be concerned with phonetic variations.

The OP didn't say what the application was at all, but you're right that 
from his example he does SEEM more interested in character matches than 
phonetic ones so he'd presumably quickly discard phonetic comparisons if 
that's really not what he wants.

	Ed.


From scrimp212 at yahoo.com  Thu May  5 16:13:26 2005
From: scrimp212 at yahoo.com (scrimp)
Date: 5 May 2005 13:13:26 -0700
Subject: FTP/TLS connection using python
In-Reply-To: <7xfyx2akqu.fsf@ruckus.brouhaha.com>
References: <1115225185.951540.128460@z14g2000cwz.googlegroups.com>
	<4278FFD7.3060200@syscononline.com>
	<1115226327.793691.252410@o13g2000cwo.googlegroups.com>
	<7xfyx2akqu.fsf@ruckus.brouhaha.com>
Message-ID: <1115324006.067292.139930@o13g2000cwo.googlegroups.com>

Does anyone know how I can get m2crypto installed on a windows box w/o
paying for the installer? I think thats dumb to charge for the windows
version and the unix version is free...o well

--Barry



From percivall at gmail.com  Sat May 28 11:12:23 2005
From: percivall at gmail.com (Simon Percivall)
Date: 28 May 2005 08:12:23 -0700
Subject: __call__
References: <42987f9a$0$26432$9b622d9e@news.freenet.de>
Message-ID: <1117293143.679768.286600@g43g2000cwa.googlegroups.com>

Look at http://docs.python.org/ref/callable-types.html

>>> class Test(object):
...     def __call__(self):
...         print "the instance was called"
...
>>> t = Test()
>>> t()
the instance was called

Is this what you wanted?



From listserver at tdw.net  Thu May 12 11:42:34 2005
From: listserver at tdw.net (Tim Williams)
Date: Thu, 12 May 2005 16:42:34 +0100
Subject: How "return" no return ?
References: <mailman.389.1115837608.29826.python-list@python.org>	<1115839271.271071.32710@z14g2000cwz.googlegroups.com>	<mailman.393.1115840571.29826.python-list@python.org>	<1115841659.470657.33320@o13g2000cwo.googlegroups.com><mailman.399.1115844290.29826.python-list@python.org><eL2dnQWPyceN7B_fRVn-1w@comcast.com>
	<d5vs3i$54n$2@sea.gmane.org>
Message-ID: <00fd01c55709$385df110$5aeda8c0@twilliams>

"Ximo" <elrei69 at yahoo.es> wrote in message
news:3ehaurF34ak0U1 at individual.net...
> Hello, I want that the return sentence don't return anything, how can I do
> it?. If i do only return it returns None, and pass don't run too.
>
> Can anyone help me?, thanks.
> XIMO
>

Just don't use a return statement at all,  or do something like

[function body]
if not val = None:
    return val
[end of function]





From simon.brunning at gmail.com  Fri May 27 09:40:11 2005
From: simon.brunning at gmail.com (Simon Brunning)
Date: Fri, 27 May 2005 14:40:11 +0100
Subject: __init__() not called automatically
In-Reply-To: <d74rfp$s36$1@panix2.panix.com>
References: <1117081917.760603.82610@z14g2000cwz.googlegroups.com>
	<mailman.121.1117083356.18027.python-list@python.org>
	<4295f081$0$19214$626a14ce@news.free.fr>
	<d74rfp$s36$1@panix2.panix.com>
Message-ID: <8c7f10c6050527064067944f89@mail.gmail.com>

On 26 May 2005 11:54:33 -0400, Roy Smith <roy at panix.com> wrote:
> And the correlary wart in Python is that the first argument to a
> method is not required to be called "self".  The vast majority of
> people use "self", but every once in a great while you run into some
> yahoo who feels this is the right place to express his creativity and
> call it "this", or "obj", or some other obfuscation.

To be fair, it's easy to use 'this' by accident if you've recently
been working with Java. I've done it myself. It takes me an hour or to
reset my brain, and for a short while, there are bloody 'this'es,
braces and semi-colons everywhere.

Sanity soon returns, though.

-- 
Cheers,
Simon B,
simon at brunningonline.net,
http://www.brunningonline.net/simon/blog/


From Florian.Lindner at xgm.de  Wed May  4 07:39:27 2005
From: Florian.Lindner at xgm.de (Florian Lindner)
Date: Wed, 04 May 2005 13:39:27 +0200
Subject: Problem with pyXML DOM
References: <d5aa59$gtr$03$1@news.t-online.com>
	<mailman.151.1115205281.6583.python-list@python.org>
Message-ID: <d5ac9f$j0v$02$1@news.t-online.com>

Maniac wrote:

> Florian Lindner wrote:
> 
>>Traceback (most recent call last):
>>  File "ConfigReader.py", line 40, in ?
>>    c = ConfigReader(f)
>>  File "ConfigReader.py", line 32, in __init__
>>    print sourceNode.getElementsByTagName("filename")[0].nodeValue()
>>TypeError: 'NoneType' object is not callable
>>  
>>
> This is because nodeValue here is 'None' and 'None()' doesn't make
> sense. Looks like you want the thing between <filename> and </filename>.
> This is not a nodeValue, this is nodeValue of firstChild of element
> 'filename'. So this should work:
> 
> print sourceNode.getElementsByTagName("filename")[0].firstChild.nodeValue

Ok, works perfect. Thanks!

But I don't really understand the logic:

given I have the node A

<filename>path</filename>

A.firstChild.nodeValue == path

How would the second child of A look like? (ok, None in this case) How would
a XML fragment look like that has a second child?

What would be the nodeValue of A?

for me a child of a node is something like

<filename>
  <child1 />
  <child2 />
</filename>


Thanks,

Florian


From brian at sweetapp.com  Wed May 11 10:21:19 2005
From: brian at sweetapp.com (Brian Quinlan)
Date: Wed, 11 May 2005 16:21:19 +0200
Subject: Interactive shell for demonstration purposes
In-Reply-To: <du78y2l5137.fsf@lehtori.cc.tut.fi>
References: <1115814028.259365.98710@g49g2000cwa.googlegroups.com>	<mailman.347.1115815769.29826.python-list@python.org>
	<du78y2l5137.fsf@lehtori.cc.tut.fi>
Message-ID: <428214DF.7080304@sweetapp.com>

Ville Vainio wrote:
> Hmm, do you consider the fonts in a console window unreadable? 

In fullscreen mode, yes (you get no choice of font size in Windows XP).
In Windowed mode you still only get a limited font selection (only two 
fonts and only a few type sizes [most of which are small]).

> I've
> given a few presentations using ipython on win32 and it worked alright
> - but I suppose the projector quality is a factor here...

I'll get by but I was hoping for something better.

Cheers,
Brian


From __peter__ at web.de  Wed May  4 15:40:50 2005
From: __peter__ at web.de (Peter Otten)
Date: Wed, 04 May 2005 21:40:50 +0200
Subject: properties vs. eval()
References: <1115235178.971840.248160@o13g2000cwo.googlegroups.com>
Message-ID: <d5b8es$ubr$05$1@news.t-online.com>

Bob  Rogers wrote:

> Given this class:
> 
> class C(object):
>     def set_x(self, x):
>         self._x = x
> 
>     def get_x(self):
>         return self._x
> 
>     x = property(get_x, set_x)
> 
> 
> This use of compile() and eval() works as I expected it to:
> 
>     c = C()
>     c.x = 5000
>     n = '\'five thousand\''
>     code = compile('c.x = ' + n, '<input>', 'exec')
>     print 'before ', c.x
>     eval(code)
>     print 'after  ', c.x

I believe it is an implementation accident that this works.

> 
> But this, using eval() without compile(), does not:
> 
>     c = C()
>     c.x = 5000
>     n = '\'five thousand\''
>     print 'before ', c.x
>     eval('c.x = ' + n)
>     print 'after  ', c.x
> 
> It gives:
> 
>     before  5000
>     Traceback (most recent call last):
>       File "./r.py", line 16, in ?
>         eval('c.x = ' + n)
>       File "<string>", line 1
>         c.x = 'five thousand'
>             ^
>     SyntaxError: invalid syntax
> 
> Could someone please explain just what is going on here, and whether it
> is possible to dispense with the compile step and use eval() alone
> while setting a property?

Use 

eval(s) 

to evaluate an expression and 

exec s

to execute a statement.

Peter



From danny at nnu-dot-com.no-spam.invalid  Tue May 31 12:28:26 2005
From: danny at nnu-dot-com.no-spam.invalid (dannyguindi)
Date: Tue, 31 May 2005 16:28:26 +0000 (UTC)
Subject: COM+, Javascript and Python
References: <1114609311.916761.272980@f14g2000cwb.googlegroups.com>
Message-ID: <d7i3b9$q40$1@domitilla.aioe.org>

Do you guys know if there is a way to do this in Linux?
Thanks.

Danny



From peter at engcorp.com  Sun May 15 21:35:30 2005
From: peter at engcorp.com (Peter Hansen)
Date: Sun, 15 May 2005 21:35:30 -0400
Subject: The world is really unstable these days......
In-Reply-To: <8RRhe.2094$M36.91@newsread1.news.atl.earthlink.net>
References: <49B3F3B1.646A6FE6@elsewhere.com>
	<8RRhe.2094$M36.91@newsread1.news.atl.earthlink.net>
Message-ID: <C7-dnVCZBP58ZRrfRVn-iQ@powergate.ca>

Lucas Raab wrote:
> <snip>
[...]
> Y'know, I really do love these random word spam messages. They're quite 
> entertaining to read.

Although, when posting in reply to them it apparently helps those who 
read this through the mailing list, and who have Bayesian filtering of 
spam happening, if you would snip the entire content.

Otherwise it can confuse the spam blockers since they have your name 
generally associated with useful messages (I presume ;-) )  instead of 
with spam.  You're messin' with their statistics, man!  ;-)

-Peter


From glauco.silva at cenpra.gov.br  Tue May  3 11:19:06 2005
From: glauco.silva at cenpra.gov.br (Glauco Silva)
Date: Tue, 3 May 2005 12:19:06 -0300
Subject: problem in the compiler ?
References: <338366A6D2E2CA4C9DAEAE652E12A1DE025204C3@au3010avexu1.global.avaya.com><mailman.95.1115121292.6583.python-list@python.org>
	<427782e9$1@nntp0.pdx.net>
Message-ID: <01a401c54ff3$72f4a4d0$e87290c8@piau>

The call of MyClass isn?t in this order... i only want to explain that i?m
calling the class 'MyClass' and when i do this the function "Function" is
call when the compiler pass for the RadioButton.
The same happened when i used Pmw.RadioSelect.
I solve this problem now using this:
radio = Pmw.RadioSelect()
radio.bind('<ButtonRelease>', self.Function)

if i use :
Pmw.RadioSelect(command = self.Function)

the 'Function' is call.
And i think that this is wrong and i only want to tell to help solve this
bug.

so, my code is this:
file : MyClass.py
    import Pmw
    class MyClass:
        def __init__(self):
            radio = Pmw.RadioSelect()
            radio.bind('<ButtonRelease>', self.Function)
            #Pmw.RadioSelect(command = self.Function)

        def Funciton(self):
            print "Enter in the Function"

    if __name__ == '__main__' :
        MyClass()

when i call in the console like this:
    C:\python MyClass.py

if i using in the __init__ this :
    Pmw.RadioSelect(command = self.Function)

so the string "Enter in the Function"  is print

Thank you
Glauco





----- Original Message ----- 
From: "Scott David Daniels" <Scott.Daniels at Acm.Org>
To: <python-list at python.org>
Sent: Tuesday, May 03, 2005 11:21 AM
Subject: Re: problem in the compiler ?


Glauco Silva wrote:
> python : 2.3.5
> os: win 2K
This part is good enough (though sometimes it helps to mention the
service pack number
on windows systems).

> My code is like this:
>
> MyClass()
>
> class MyClass:
>      def __init__(self):
>          btn = RadioButton(command=self.Function)
>      def Function(self):
>          print "Enter in the function"

This is not good enough.  Show us a small actual example that exhibits
the problem behavior on your machine.  Often in the course of doing this
distillation, the original problem will become clear to you.  The code
above fails with:

Traceback (most recent call last):
   File "<pyshell#0>", line 1, in -toplevel-
     MyClass()
NameError: name 'MyClass' is not defined

on the initial call to MyClass().  I suspect this is not what you care
about.

Don't make people trying to help you do any work you cannot do yourself.
Imagine yourself browsing the newsgroup and trying to decide whether to
spend some time trying to help someone with a problem.  Would _you_ want
to spend time trying to guess what the code was with the problem as well
as what the problem was, or would you decide to help someone else out?

--Scott David Daniels
Scott.Daniels at Acm.Org




-- 
No virus found in this outgoing message.
Checked by AVG Anti-Virus.
Version: 7.0.308 / Virus Database: 266.11.2 - Release Date: 2/5/2005



From alexander.fillips at telefonica.de  Tue May 10 02:20:30 2005
From: alexander.fillips at telefonica.de (Alexander Fillips)
Date: Tue, 10 May 2005 08:20:30 +0200
Subject: is there a python object which can interpret java-script?
In-Reply-To: <QpIfe.170$FE6.126@newssvr31.news.prodigy.com>
References: <427f4ae5$0$11234$750803fa@corp.news.telefonica.de>
	<QpIfe.170$FE6.126@newssvr31.news.prodigy.com>
Message-ID: <428052ae$0$11220$750803fa@corp.news.telefonica.de>

Kartic wrote:
> The Great 'Alexander Fillips' uttered these words on 5/9/2005 7:34 AM:
> 
>> Hi,
>>
>> my short question:
>>
>> is there a python object which can interpret java-script?
>>
>> the whole story ;-)
>>
>> I wrote some streaming-scripts for the xbox mediaplayer which supports 
>> python. for a new script i tried to filter the stream-url from an 
>> website. it seems, that the site ist using java-script and the url is 
>> only visible if the java-script was interpreted. i am using urllib to 
>> retrieve the page.. but it seems that urllib is not ready for 
>> java-script...
> 
> 
> http://wwwsearch.sourceforge.net/python-spidermonkey/ is a 
> Python-Javascript bridge.
> 
> To do what you are trying, you will have to execute the Javascript in 
> that web page in the context of the page you are downloading...I am not 
> quite sure how you will go about doing that without re-inventing what a 
> Javascript-enabled browser does.
> 
> Knowing nothing about the Xbox environment, here is a suggestion that I 
> feel will make your task easier. Can you not use javascript-enabled 
> links text browser to access the page and capture the output HTML source 
> from links into Python? (Or if you can use win32all, you can automate IE 
> to view source and process that source in Python to get your URL)
> 

if the xbox media player is active there is only support for python. it 
is possible to run linux on the xbox, but not at the same time as xbmc 
is active. i found a browser for the xbox (linksboks) but here still the 
same problem.  thank for your tips...

Alex


From ryan at ryankaskel.com  Mon May 16 19:41:53 2005
From: ryan at ryankaskel.com (ryan at ryankaskel.com)
Date: 16 May 2005 16:41:53 -0700
Subject: query progress bar
References: <mailman.65.1116284481.8733.python-list@python.org>
Message-ID: <1116286913.207477.219180@g44g2000cwa.googlegroups.com>

What type of UI is this for? The Python Cookbook, 2nd Ed. has a nice
textual solution. I'm not sure if this is the same one, but here is <a
href="http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/168639">one
from ASPN</a>. Here is one <a
href="http://wxpython.org/docs/api/wx.ProgressDialog-class.html"> for
wxPython.</a>



From wuwei23 at gmail.com  Thu May  5 20:47:17 2005
From: wuwei23 at gmail.com (alex23)
Date: 5 May 2005 17:47:17 -0700
Subject: New Python regex Doc (was: Python documentation moronicities)
In-Reply-To: <1115328523.852744.110390@f14g2000cwb.googlegroups.com>
References: <1113301533.054410.203710@z14g2000cwz.googlegroups.com>
	<mailman.1813.1113355346.1799.python-list@python.org>
	<1113856843.023012.165500@l41g2000cwc.googlegroups.com>
	<1113908069.264676.207090@g14g2000cwa.googlegroups.com>
	<1115328523.852744.110390@f14g2000cwb.googlegroups.com>
Message-ID: <1115340437.139748.291890@z14g2000cwz.googlegroups.com>


Xah Lee wrote:
> 99% of programers really don't need to give a flying fuck about the
> history of a language.

Ironically, I'm pretty confident that the same percentage of readers on
this group feel _exactly the same way_ about your 'improvements'.

-alex23



From dfreem3 at nospam.shaw.ca  Sat May 14 19:04:04 2005
From: dfreem3 at nospam.shaw.ca (don freeman)
Date: Sat, 14 May 2005 23:04:04 GMT
Subject: Jesus said, "I am the way, the truth and the life: no one can
	come to the Father(God)(in Heaven),
	but by me." (John 14:6) This means that
	if you die without trusting in Jesus Christ as your Lord and Saviour
	you
	will die in your sins and be forever separated from the love of God in
	a
	place called Hell. The Holy Bible descibes Hell as a place of eternal
	torment, suffering,
	pain and agony for all those who have rejected Jesus Christ. The
	good news is that you can be sure you are going to Heaven when this
	life
	is over if you allow Jesus Christ to save you today. Do not wait until
	later
	to be saved because you do not know exactly when you will die. [ Posted
	by: RonaldGrossi3848@yahoo.com on May 14, 2005 ] [ 2:52:09 pm ]
In-Reply-To: <1116096706.696830.275140@g44g2000cwa.googlegroups.com>
References: <1116096706.696830.275140@g44g2000cwa.googlegroups.com>
Message-ID: <Etvhe.1353573$8l.349001@pd7tw1no>



> http://www.gotquestions.org/sinners-prayer.html << I saw this site on a
> search directory. Great Resource!
> 


C'mon, this is the 21st century. Nobody believes that silly story about 
God having a son anymore.

Think about it. The original story is always the best. The sequel is 
always a commercial rip-off. Frankenstein was literature. Son of 
Frankenstein was silly.

God impregnates a virgin woman and gives birth to a half man/half god, 
who can walk on water and turn water into wine, but who can't defend 
himself very well at all from the Romans. This story may have sold in 
the past, but not now. We've become too sophisticated for this kind of 
fantasy.



From yamadora1999 at naver.com  Mon May 23 23:45:08 2005
From: yamadora1999 at naver.com (yamadora1999)
Date: 23 May 2005 20:45:08 -0700
Subject: How to use protocols.msn.FileSend and protocols.msnFileReceive
Message-ID: <97627ec1.0505231945.79a90eaf@posting.google.com>

How to use protocols.msn.FileSend and FileReceive?
Please show me a example.


From dfreem3 at nospam.shaw.ca  Wed May 11 15:25:19 2005
From: dfreem3 at nospam.shaw.ca (don freeman)
Date: Wed, 11 May 2005 19:25:19 GMT
Subject: Jesus said, "I am the way, the truth and the life: no one can
	come to the Father(God)(in Heaven),
	but by me." (John 14:6) This means that
	if you die without trusting in Jesus Christ as your Lord and Saviour
	you will die in your sins and be forever sepa
In-Reply-To: <3eevb8F2pac7U1@individual.net>
References: <1115824563.613661.169620@g47g2000cwa.googlegroups.com>
	<M%qge.1317047$Xk.244810@pd7tw3no> <3eeta6F2m45kU1@individual.net>
	<1115832484.237918.53830@o13g2000cwo.googlegroups.com>
	<3eevb8F2pac7U1@individual.net>
Message-ID: <z_sge.1317829$8l.585908@pd7tw1no>

> 
> I suppose he could point at what he saw and wither it.
> 

Jesus would then give a sermon from the mount:

Let the Puritans wear fig leaves over their eyes!



From jonasmg at softhome.net  Wed May 18 06:11:19 2005
From: jonasmg at softhome.net (Jonas Melian)
Date: Wed, 18 May 2005 11:11:19 +0100
Subject: Python forum
In-Reply-To: <17033.60162.412060.528218@montanaro.dyndns.org>
References: <4289B462.10804@softhome.net> <4289E7D2.80303@acm.org>
	<17033.60162.412060.528218@montanaro.dyndns.org>
Message-ID: <428B14C7.3090206@softhome.net>

Skip Montanaro wrote:
 > I wonder if there's a way to gateway the tutor list to the
> python-forum.org forum, probably to the beginner's forum.
> 
> Skip
> 
> 

Totally in agreement with this. Thus each one chooses if wants to
posting from forum or mailing list


From b.ghose at gmail.com  Sun May  1 17:32:26 2005
From: b.ghose at gmail.com (Baishampayan)
Date: 1 May 2005 14:32:26 -0700
Subject: Whats the best Python Book for me
References: <zQade.1185052$Xk.1184944@pd7tw3no>
Message-ID: <1114983146.710093.254820@f14g2000cwb.googlegroups.com>

Hi,
In my opinion, Mark Pilgrim's great book Dive Into Python is the best
suited for somebody who already knows some programming.
The book is a truly free book and is available in a wide range of
formats.
You can get it here http://diveintopython.org/
Enjoy!
-bg-



From magicmas at spymac.com  Sun May 29 04:14:00 2005
From: magicmas at spymac.com (cheng)
Date: 29 May 2005 01:14:00 -0700
Subject: need help of RE
In-Reply-To: <42997871$0$27689$636a15ce@news.free.fr>
References: <1117352350.179209.206930@z14g2000cwz.googlegroups.com>
	<mailman.230.1117353059.18027.python-list@python.org>
	<1117353427.242568.47010@g43g2000cwa.googlegroups.com>
	<42997871$0$27689$636a15ce@news.free.fr>
Message-ID: <1117354440.939645.177790@f14g2000cwb.googlegroups.com>

thx for help..i got it now :)



From littlejohn.75 at news.free.fr  Sat May  7 13:21:17 2005
From: littlejohn.75 at news.free.fr (F. Petitjean)
Date: 07 May 2005 17:21:17 GMT
Subject: Shell Commands in Python Code
References: <mailman.144.1115481338.29826.python-list@python.org>
Message-ID: <427cf90d$0$287$626a14ce@news.free.fr>

Le Sat, 7 May 2005 08:55:35 -0700 (PDT), Sara Khalatbari a ?crit :
> There are a lot of commands that I need to use in my
> code & I don't know how to do it
> 
> Is there a way to use shell commands in Python code?
Python is a scrpting language. So you can substitute most shell scripts
idioms with pythonic ones. A large number of shell scripts can be
replaced with python scripts without any semantic loss.

> 


From jonasmg at softhome.net  Thu May 19 18:46:40 2005
From: jonasmg at softhome.net (Jonas Melian)
Date: Thu, 19 May 2005 23:46:40 +0100
Subject: [Tutor] kernel serie
In-Reply-To: <BC6751CE-F497-44C2-BE01-0B5E848EE23D@yahoo.fr>
References: <428D131E.3010000@softhome.net>
	<BC6751CE-F497-44C2-BE01-0B5E848EE23D@yahoo.fr>
Message-ID: <428D1750.10404@softhome.net>

Max Noel wrote:
> 
>     The [:2] is unnecessary, as you're limiting the number of splits  to
> 2, so the resulting list from split() can't have more than 3  elements.
> 
Without the [:2], it fails

>     Also, note that this code will likely cause the program to crash  on
> any system that isn't Linux. On my box (OS X 10.4.1), for example, 
> sys.platform returns 'darwin'.
> 
Thanks, but it's for a linux program only


From jason.mobarak at gmail.com  Wed May  4 23:46:44 2005
From: jason.mobarak at gmail.com (Jason  Mobarak)
Date: 4 May 2005 20:46:44 -0700
Subject: annonymous functions -- how to
In-Reply-To: <42795acb.685370470@news.oz.net>
References: <1115239458.776800.240080@g14g2000cwa.googlegroups.com>
	<d5bdip$bpp$05$2@news.t-online.com>
	<42795acb.685370470@news.oz.net>
Message-ID: <1115264804.625020.203800@f14g2000cwb.googlegroups.com>

What's wrong with:

def blah():
  def _ (a, b, c):
    a = a + 2
    print "stmt 2"
    return a+b/c
  return doSomethingWith(_)

It's basically "anonymous", it just uses a name that you don't care
about. AFAIK, it can be immediately clobbered later if need be.
Otherwise, the function shouldn't be anonymous.



From powderkeg at snow.email.ne.jp  Tue May 31 03:05:29 2005
From: powderkeg at snow.email.ne.jp (Mark Sargent)
Date: Tue, 31 May 2005 16:05:29 +0900
Subject: [ANN] IPython 0.6.14.
In-Reply-To: <d7h185$sp5$1@sea.gmane.org>
References: <d7h185$sp5$1@sea.gmane.org>
Message-ID: <429C0CB9.10201@snow.email.ne.jp>

Fernando Perez wrote:

>Hi all,
>
>I've just made the 0.6.14 release of IPython, mostly to fix the
>inevitable bugs reported after the .13 one (though one big improvement
>sneaked by).
>
>IPython's homepage is at:
>
>http://ipython.scipy.org
>
>and downloads are at:
>
>http://ipython.scipy.org/dist
>
>I've provided RPMs (for Python 2.3 and 2.4, built under Fedora Core 3),
>plus source downloads (.tar.gz).  Fedora users should note that IPython
>is now officially part of the Extras repository, so they can get the
>update from there as well (though it may lag by a few days).
>
>There is also a native win32 installer which should work correctly for
>both Python 2.3 and 2.4.
>
>Debian, Fink and BSD packages for this version should be coming soon, as
>the respective maintainers (many thanks to Jack Moffit, Andrea Riciputi
>and Dryice Liu) have the time to follow their packaging procedures.
>
>Many thanks to Enthought for their continued hosting support for
>IPython, and to all the users who contributed ideas, fixes and reports.
>
>I'd like to add a special thanks to Denis Rivi?re, Yann Cointepas and
>Benjamin Thyreau for their hard work on the Qt improvements, and for
>their overall hospitality.  Python really seems to have a remarkably
>friendly community, worldwide!
>
>
>WHAT is IPython?
>----------------
>
>1. An interactive shell superior to Python's default. IPython has many
>features for object introspection, system shell access, and its own 
>special command system for adding functionality when working interactively.
>
>2. An embeddable, ready to use interpreter for your own programs. 
>IPython can be started with a single call from inside another program, 
>providing access to the current namespace.
>
>3. A flexible framework which can be used as the base environment for 
>other systems with Python as the underlying language.
>
>
>Release notes
>-------------
>
>As always, the NEWS file can be found at http://ipython.scipy.org/NEWS,
>and the full ChangeLog at http://ipython.scipy.org/ChangeLog.  The
>highlights of this release follow.
>
>This is mainly a bugfix release, to clean up the problems reported in
>0.6.13.  As I said at the time, I intend to start new development now
>(more details on that in a separate email).  As always, however, a few
>new goodies managed to sneak by.
>
>* A new -qthread option to support controlling Qt apps from within
>ipython, similar to what -gthread and -wthread do for GTK/WX.  This was
>contributed by Denis Rivi?re <nudz-AT-free.fr>, Yann Cointepas
><yann-AT-sapetnioc.org> and Benjamin Thyreau <Benji2-AT-decideur.info>.
>   Many thanks to them!  The lack of Qt support was a glaring omission of
>ipython's gui features, so I'm extremely happy to have their contribution.
>
>    For those of you who may be matplotlib users as well, I should note
>that as of mpl 0.81 (the next release, or use current CVS), the -pylab
>option will also support interactive matplotlib use with the Qt backend.
>   This is also thanks to work done by Denis, Yann and Benjamin against
>the matplotlib Qt backend, in conjunction with the IPython improvements.
>
>* New -e option to %run to suppress tracebacks from sys.exit() calls.
>This can be very useful to silence all the noise generated when running
>unittests from within ipython.
>
>* New ';' escape to autoquote a line without splitting:
>
>In [6]: ,foo a b c
>------> foo("a", "b", "c")
>
>In [7]: ;foo a b c
>------> foo("a b c")
>
>In the process, I fixed ',' quoting, which I'd broken in .13.
>
>* Fix -wthread to work with WXPython 2.6 (this also impacts matplotlib
>users who run the WX backend).
>
>* Added new matcher (it goes at the end of the priority list) to do
>tab-completion on named function arguments.  Submitted by George Sakkis
><gsakkis-AT-eden.rutgers.edu>.  See the thread at
>
>http://www.scipy.net/pipermail/ipython-dev/2005-April/000436.html
>
>for more details.
>
>* Various other fixes for obscure bugs, but all of which caused reported
>IPython crashes.  Details in Changelog.
>
>
>Enjoy, and as usual please report any problems.
>
>Regards,
>
>Fernando.
>
>  
>
Hi All,

Fernando, if I may ask, as I'm a Fedora3 user. You mention that there 
are RPMs for FC3, for Python2.3, 2.4. I'm new to Python. Is IPython 
built into FC3s Python or is it a stand-alone program.? Sorry for 
troubling you with this. Cheers.

Mark Sargent.


From Bernd.Nawothnig at t-online.de  Mon May 16 12:47:25 2005
From: Bernd.Nawothnig at t-online.de (Bernd Nawothnig)
Date: Mon, 16 May 2005 18:47:25 +0200
Subject: newbie - variable "buried in quotes"
References: <1116260476.332975.87680@g49g2000cwa.googlegroups.com>
Message-ID: <tdvml2-9ii.ln1@Bernd.Nawothnig.dialin.t-online.de>

On 2005-05-16, plsullivan wrote:
> I've got a variable deep inside some quotes needed by the application I
> am using. I can't figure out how to make this work. (Also, is there a
> line continuation character?)

> luser = win32api.GetUserName()

> gp.FeatureclassToCoverage_conversion("'Database
> Connections\\%s at GIS_srv-earth.sde\\GIS.GIS.Cadastral\\GIS.GIS.Parcels'
> POLYGON", prcl83, "", "DOUBLE") % luser

You poosibly meant something like that:

#v+
gp.FeatureclassToCoverage_conversion("'Database"
  "Connections\\%s at GIS_srv-earth.sde\\GIS.GIS.Cadastral\\GIS.GIS.Parcels'"
  "POLYGON" % luser, prcl83, "", "DOUBLE")
#v-



Bernd

-- 
Those who desire to give up freedom in order to gain security,
will not have, nor do they deserve, either one. [T. Jefferson]


From mario at nospam.noext  Wed May 11 07:57:55 2005
From: mario at nospam.noext (Mario)
Date: Wed, 11 May 2005 13:57:55 +0200
Subject: HELP Printing with wxPython
Message-ID: <d5t4oj$sct$1@carabinieri.cs.interbusiness.it>

Hello all, I'm trying hard to make possible to print some simple text from
python to the default printer using wxPython, after days of internet
searches I found this page: http://wiki.wxpython.org/index.cgi/Printing but
is impossible to use this script even if I do exactly as said there. I think
the script is buggy or I am not able to use it, even if seems very simple to
use...

Anyone can give me an hint on how to easily and simply print some text? Is
there a library ready to download and use? Something like SendPrinter("some
text\n")?

Thanks in advance if anyone can give any help.

Mario




From kaerbuhez at yahoo.fr  Thu May 12 17:01:47 2005
From: kaerbuhez at yahoo.fr (kaerbuhez)
Date: Thu, 12 May 2005 23:01:47 +0200
Subject: How "return" no return ?
In-Reply-To: <3ehkh2F366o4U1@individual.net>
References: <3ehaurF34ak0U1@individual.net><mailman.472.1115911936.29826.python-list@python.org><3ehc5tF35eo3U1@individual.net>
	<mailman.484.1115919541.29826.python-list@python.org>
	<3ehkh2F366o4U1@individual.net>
Message-ID: <4283c442$0$26083$ba620e4c@news.skynet.be>

Ximo a ?crit :
> I am doing my own interpreter with the Python languaje.
> 
> Do you understand me?
> 

I will do my best : I guess that you are about to write your own non 
python interpreter (I mean, it will interpret some language that is not 
Python) and your interpreter sadly writes "None" when there is none to 
write.
Is that correct ?
If yes, I suggest that you replace somewhere in your code:
print result
by
if result is not None: print result

I know that this is not the question but if it is right that your 
interpreter is not a python interpreter and that you build a console on 
top of it (I know many assumptions, ...), I would like to kindly suggest 
you to use something else that the Python prompt (">>>") - at least on 
this NG - I am afraid that _this_ didn't help anybody to understand what 
you meant.

If by pure coincidence, this helped you, it would unexpectingly enlight 
my day ... and please don't tell me that my english is perfect, I know 
it perfectly well.



From robin at reportlab.com  Mon May 23 10:52:25 2005
From: robin at reportlab.com (Robin Becker)
Date: Mon, 23 May 2005 15:52:25 +0100
Subject: detached subprocess
Message-ID: <4291EE29.4000508@chamonix.reportlab.co.uk>

After struggling with os.spawnxxx to get a detached process I tried using 
Pyhton2.4's new subprocess module.

I struggled with that as well even when trying to use the creation flags for 
DETACHED_PROCESS 0x8 and CREATE_NEW_PROCESS_GROUP = 0x200

I am using the following cgi script parent.cgi

#!c:/python24/python.exe -u
print 'content-type: text/plain'
print
print 'DONE'
import subprocess
pid = subprocess.Popen(['c:/python24/pythonw.exe',
     'c:\\tmp\\child.py', 'arg1', 'arg2'], creationflags=0x208).pid
print pid
#end of parent script


child is a simple time delay

#child.py
import time, sys, os
time.sleep(10)
print 'stdout IN THE CHILD'
print >>sys.stderr, 'stderr IN THE CHILD'
#end of child


When I run the parent.cgi script through apache I see no output in the browser 
for 10 seconds; when the child dies (as observed using procexp) I see the expected

DONE
3256

In other words it seems impossible to get standard subprocess.py to detach the 
child process properly.

However, if I hack subprocess.py to alter the bInheritHandles flag passed into 
CreateProcess (line 718) from the constant 1 to

not (creationflags & 0x8) and 1 or 0

Is this a buglet or a feature request? It seems subprocess punts on closefds for 
mswindows, but setting bInheritHandles to 0 seems to work fine ie when it is 0 
my test seems to indicate that the parent has finished and gone to heaven long 
before the child ends its sleep. Of course it may be that it's just the handles 
that are being held.
-- 
Robin Becker



From kyoguan at gmail.com  Sun May 15 23:28:31 2005
From: kyoguan at gmail.com (kyo guan)
Date: Mon, 16 May 2005 11:28:31 +0800
Subject: question about the id()
In-Reply-To: <17032.3806.583757.806221@montanaro.dyndns.org>
Message-ID: <42881364.3ee9c850.394e.ffff9990@mx.gmail.com>

HI Skip:

	I want to check is there any change in the instance 's methods.
>>> a=A()
>>> a2=A()
>>> a.f == a2.f
False
>>> a.f is a2.f
False
>>> a.f is a.f
False
>>>
	If the instance methods are create on-the-fly, how to do that? Thanks.

Kyo
 

> -----Original Message-----
> From: Skip Montanaro [mailto:skip at pobox.com] 
> Sent: Monday, May 16, 2005 11:09 AM
> To: kyo guan
> Cc: python-list at python.org
> Subject: Re: question about the id()
> 
> 
>     kyo> Can someone explain why the id() return the same 
> value, and why
>     kyo> these values are changing?
> 
> Instance methods are created on-the-fly.  In your example the 
> memory associated with the a.f bound method (not the same as 
> the unbound method
> A.f) is freed before you reference a.g.  That chunk of memory 
> just happens to get reused for the bound method associated 
> with a.g.  Here's a
> demonstration:
> 
>     % python
>     Python 2.5a0 (#77, May 14 2005, 14:47:06) 
>     [GCC 3.3 20030304 (Apple Computer, Inc. build 1671)] on darwin
>     Type "help", "copyright", "credits" or "license" for more 
> information.
>     >>> class A(object):
>     ...   def f(): pass
>     ...   def g(): pass
>     ... 
>     >>> a = A()
>     >>> x = a.f
>     >>> y = a.g
>     >>> id(x)
>     17969240
>     >>> id(y)
>     17969440
>     >>> id(a.f)
>     17969400
>     >>> id(a.g)
>     17969400
> 
> Skip



From grante at visi.com  Tue May 10 21:51:15 2005
From: grante at visi.com (Grant Edwards)
Date: Wed, 11 May 2005 01:51:15 -0000
Subject: Python Args By Reference
References: <1115769308.136143.74080@f14g2000cwb.googlegroups.com>
	<mailman.318.1115769980.29826.python-list@python.org>
Message-ID: <1182p8j1oa0oc86@corp.supernews.com>

On 2005-05-10, Joseph Garvin <k04jg02 at kzoo.edu> wrote:
> ncf wrote:
>
>>Hello all, I was wondering if there was any way to pass arguments
>>(integer and such) by reference (address of), rather than by value.
>
> All mutable types in python are passed by reference automatically.

So are immutable ones.  It just doesn't matter in that case.


-- 
Grant Edwards                   grante             Yow!  "DARK SHADOWS"
                                  at               is on!! Hey, I think
                               visi.com            the VAMPIRE forgot his
                                                   UMBRELLA!!


From __peter__ at web.de  Wed May 18 11:54:51 2005
From: __peter__ at web.de (Peter Otten)
Date: Wed, 18 May 2005 17:54:51 +0200
Subject: Sorting x lists based on one list ... maybe an example would make
	sense:
References: <eonie.426$VB6.363@newssvr12.news.prodigy.com>
	<ssnie.428$VB6.184@newssvr12.news.prodigy.com>
	<d6d14l$5vj$00$1@news.t-online.com>
	<_Nnie.1050$5Z1.166@newssvr30.news.prodigy.com>
Message-ID: <d6foeh$pnl$03$1@news.t-online.com>

Philippe C. Martin wrote:

> :-) Thanks, the lists will evolve and are also stored in 'csv' format in
> external files at one point. I cannot use dictionaries because I need to
> control the sorting (hash).
> 
> In this specific case, list 1 represents students with their information,
> list 2 represents assignments with information such as weight, term, max
> grade ... and list 3 the actual grades.

This sounds like you should seriously consider using a database.

Peter
 



From waqer at yahoo.com  Sun May  8 03:21:51 2005
From: waqer at yahoo.com (waqer at yahoo.com)
Date: 8 May 2005 00:21:51 -0700
Subject: Python features
Message-ID: <1115536911.106882.166230@z14g2000cwz.googlegroups.com>

To which degree python language support features of following langauage
categories? 

Imperative, Object Oriented, Scriptig or Functional.



From mahs at telcopartners.com  Wed May  4 22:48:47 2005
From: mahs at telcopartners.com (Michael Spencer)
Date: Wed, 04 May 2005 19:48:47 -0700
Subject: News/mail gateway problem? (was Re: UnicodeDecodeError )
In-Reply-To: <d71j715r219ut1pq41nruaddog50m8c2he@4ax.com>
References: <mailman.30.1115254554.29826.python-list@python.org>
	<d71j715r219ut1pq41nruaddog50m8c2he@4ax.com>
Message-ID: <d5c15v$ns$1@sea.gmane.org>

John Machin wrote:
> On Thu, 5 May 2005 13:00:32 +1200, Thomas Thomas <thomas at eforms.co.nz>
> wrote:
> 
> 
>>Hi all,
>>
>>Forgot to mention I am using python 2.3 on windows.
>>
>>
> 
> 
> This message (sent to python_list) would seem to be referencing a
> previous posting/message -- but it's not showing up in the newsgroup.
> I've noticed a few cases in the last day or so where the first item in
> a thread on the newsgroup was a reply to a message/posting that was
> not in the thread. 
> 
> Is there blockage/leakage in the pipe somewhere?
> 
> 
> 
I received the previous posting via the gmane news server.  But it is dated 
5/5/2005 5.15a PDT (i.e., tomorrow).  Perhaps this has something to do with the 
'blockage/leakage'

Michael



From pdemb at gazeta.pl  Wed May 18 07:44:24 2005
From: pdemb at gazeta.pl (Peter Dembinski)
Date: Wed, 18 May 2005 13:44:24 +0200
Subject: How to learn OO of python?
References: <mailman.130.1116402087.8733.python-list@python.org>
Message-ID: <8764xg69nr.fsf@hector.domek>

could ildg <could.net at gmail.com> writes:

> I have learned python for over a month.
> I heard that it was very easy to learn, but when I tried to know OO
> of python,
> I found it really weird, some expressions seem very hard to understand,
> and I can't find enough doc to know any more about it.

These may be hard to understand because you haven't understood OOP.
Python syntax is very similar to p-code used in computer science
books.  Try to think like a computer scientist :>

> So, I wonder how did you master python? And where to find some cool
> docs?

Go to the nearest library and get some OO design book.

-- 
http://www.peter.dembinski.prv.pl


From rschroev_nospam_ml at fastmail.fm  Thu May 12 04:11:40 2005
From: rschroev_nospam_ml at fastmail.fm (Roel Schroeven)
Date: Thu, 12 May 2005 08:11:40 GMT
Subject: Python Documentation (vs PHP stuff)
In-Reply-To: <mailman.420.1115863774.29826.python-list@python.org>
References: <d5tjng$kae$1@sea.gmane.org><mailman.390.1115838298.29826.python-list@python.org><d5to4d$895$1@solaris.cc.vt.edu>	<d5tqi2$d8l$2@sea.gmane.org>
	<mailman.420.1115863774.29826.python-list@python.org>
Message-ID: <0dEge.88616$nT4.5317732@phobos.telenet-ops.be>

Terry Reedy wrote:

> Because of these two posts (and a few others) extolling the PHP 
> documentation, I decided to take a look for myself to see what the 
> fuss was about and whether I could get any ideas on how to improve 
> Python's docs.
> 
> [...]
> 
> Finally, 80% of the chapter/page consists of a thrown-together 
> mish-mash of unsorted. unedited comments and questions.

In my experience, the user comments in many cases are almost useless.
Sometimes just confusing, sometimes contradicting each other, sometimes
even incorrect. Sometimes correct and useful too, but IMO that gets
drown between all the others.

> [...]
> Sorry, PHP doc fans: to me, this sort of  inflated, noisey bloatware
> is wretched, not outstanding.

Thank you. I thought I was the only one in the world who doesn't like
the PHP documentation.

> Conclusion 1: if PHP is anything as awful as the manual, it is not 
> for me.

I'm fairly sure you won't like PHP :)

Some time ago I used to do some programming in PHP on the side. In the 
beginning, I thought PHP was quite a nice language. I even used it to 
write some small non-web programs that I would otherwise haven written 
in C or C++ (I didn't know Python at the time, nor any other decent 
scripting language(*) ).
Then I discovered Python, which caused my dislike of PHP to grow even 
more. PHP tries to make everything as simple as possible but that 
doesn't always work out very well, as explained in the section 
'Oversimplification Leading to Excessive Complexity' of this paper:
http://www.ukuug.org/events/linux2002/papers/html/php/#section_5.
Python OTOH makes things as simple as possible but not any simpler, and 
that turns out to work much better.

(Disclaimer: I haven't done any web programming in the meantime, so I 
don't know from own experience how Python fares in that area. But I'm 
fairly confident that it would work out just nice.)


(Sorry for this off-topic rant)

(*) I know Python is not just a scripting language, but the things I 
used PHP for at the time really were nothing more than scripts, despite 
me thinking about writing them in C or C++.

-- 
If I have been able to see further, it was only because I stood
on the shoulders of giants.  -- Isaac Newton

Roel Schroeven


From jepler at unpythonic.net  Thu May  5 09:27:08 2005
From: jepler at unpythonic.net (Jeff Epler)
Date: Thu, 5 May 2005 08:27:08 -0500
Subject: Best way to convert a list into function call arguments?
In-Reply-To: <1115299220.736781.54810@o13g2000cwo.googlegroups.com>
References: <1115299220.736781.54810@o13g2000cwo.googlegroups.com>
Message-ID: <20050505132707.GA19971@unpythonic.net>

Your question is answered in the tutorial:
http://docs.python.org/tut/node6.html#SECTION006740000000000000000

4.7.4 Unpacking Argument Lists

The reverse situation occurs when the arguments are already in a list or
tuple but need to be unpacked for a function call requiring separate
positional arguments. For instance, the built-in range() function
expects separate start and stop arguments. If they are not available
separately, write the function call with the *-operator to unpack the
arguments out of a list or tuple:

>>> range(3, 6)             # normal call with separate arguments
[3, 4, 5]
>>> args = [3, 6]
>>> range(*args)            # call with arguments unpacked from a list
[3, 4, 5]

Jeff
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From kay.schluehr at gmx.net  Sun May  8 10:11:23 2005
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: 8 May 2005 07:11:23 -0700
Subject: pyvm -- faster python
In-Reply-To: <mailman.164.1115548611.29826.python-list@python.org>
References: <mailman.164.1115548611.29826.python-list@python.org>
Message-ID: <1115561483.741761.212140@f14g2000cwb.googlegroups.com>


Stelios Xanthakis wrote:
> Hi.
>
> pyvm is a program which can run python 2.4 bytecode (the .pyc files).
> A demo pre-release is available at:
> 	http://students.ceid.upatras.gr/~sxanth/pyvm/
>
>
> Facts about pyvm:
> - It's FAST. According to the "cooked-bench" benchmark suite it
finishes
>    in 55% of the time python takes;)
> - It's SMALL. Currently the source code is under 15k lines with the
>    builtin modules.
> - It's new. Uses no code from CPython.
> - It's incomplete. Not even near the stability and quality of python.
>    It needs A LOT of work before it can be compared to CPython.
>    Moreover, at the time it lacks many things like closures, long
numbers
>    new style classes, etc.
> - It's incompatible with CPython. Not all programs run.
> - The C API is incompatible. You can't run C modules (a thin wrapper
to
>    make pyvm appear as libpython *could* be possible but not a goal
>    AFAIC)
> - The demo is an x86/linux binary only. You shouldn't trust binaries,
>    run it in a chrooted environment not as root!
>
> Hope it works!
>
> Cheers,
>
> Stelios

Hi Stelios,

could You tell us a bit more about Your motivation to create an
alternative C-Python interpreter? There is AFAIK no such ambitious
project that has ever survived. The last one I remember died shortly
after it was born:

http://www.python.org/pycon/papers/pymite/

This is sad because it is still challenging to offer a tiny interpreter
of a dynamic language for glue code/RAD on tiny hardware. A lot of
effort was spent to provide Java for microcontrollers especially for
SmartCards. I think a lot of people would show interest in Your project
if it gets somehow focussed and does not seem to be redundant.

Ciao,
Kay



From peter at engcorp.com  Sat May 14 19:43:29 2005
From: peter at engcorp.com (Peter Hansen)
Date: Sat, 14 May 2005 19:43:29 -0400
Subject: Multiple "cmp"s chained one after another
In-Reply-To: <d65hb4$fgr$02$3@news.t-online.com>
References: <d64io9$s6o$05$1@news.t-online.com>
	<d64pgi$tc8$1@news2.zwoll1.ov.home.nl>
	<yIadnSai_7pVlxvfRVn-jw@powergate.ca>
	<d65hb4$fgr$02$3@news.t-online.com>
Message-ID: <SMWdnfOJQ7CoEBvfRVn-2Q@powergate.ca>

Volker Grabsch wrote:
> Peter Hansen wrote:
> 
>>Or just use the .timetuple() method on datetime objects and sort on the 
>>8th element of the 9-element tuple, which is the day-of-the-year.
> 
> An interesting idea. But wouldn't sorting by (dd.month,dd.day) be more
> effective?

Depending on the meaning of "effective", I suppose so.

> In other words: Does .timetuple() create a tuple, or does it just return
> a tuple which is present anyway?

I don't know what it does.  Normally one shouldn't care about that kind 
of thing.  In this case, you seem to be assuming that .month and .day 
are values that are "present anyway", but we don't really know that 
either, since they could just as well be properties.  If someone who 
knows or someone who checks the source (for a given implementation of 
course... it could change) cares to share, we'd know more.  What good 
that would do us is still a mystery to me. ;-)

-Peter


From BluWater0523 at yahoo.com  Wed May 11 11:16:03 2005
From: BluWater0523 at yahoo.com (BluWater0523 at yahoo.com)
Date: 11 May 2005 08:16:03 -0700
Subject: Jesus said, "I am the way,
	the truth and the life: no one can come to the Father(God)(in Heaven),
	but by me." (John 14:6) This means that if you die without trusting in
	Jesus Christ as your Lord and Saviour you will die in your sins
	and be forever separated from the love of God in a place called
	Hell. The Holy Bible descibes Hell as a place of eternal
	torment, suffering,
	pain and agony for all those who have rejected Jesus Christ. The good
	news is that you can avoid Hell by allowing Jesus Christ to
	save you today. Only then will you have true peace in your life
	knowing that no matter what happens you are on your way to
	Heaven. by BluWater0523@yahoo.com
Message-ID: <1115824563.613661.169620@g47g2000cwa.googlegroups.com>

http://hypershrink.com/SinnersPrayer << I saw this website on a search
directory. Great Resource!



From bob at passcal.nmt.edu  Wed May 18 19:33:00 2005
From: bob at passcal.nmt.edu (Bob Greschke)
Date: Wed, 18 May 2005 17:33:00 -0600
Subject: Tkinter Return/Enter key handling
Message-ID: <M6CdnS9Wpto3TRbfRVn-3g@nmt.edu>

I have a Tkinter Text() widget in a program that the user can type stuff 
into.  Most of our keyboards have the regular keys with a "Return" key, and 
a numeric keypad with an "Enter" key.  The Return key generates events with 
"<Return>" for the keysym, and the Enter key generates events with 
"<KP_Enter>" as the keysym.  The Text() widget does a carriage 
return/linefeed when the Return key is pressed, but does nothing when the 
Enter key is pressed.  So I did a

Text.bind("<KP_Enter", Return)

with a suitable

def Return(e):
    TheText.insert(END, linesep)

But isn't there a way to handle this with some sort of keyboard remapping 
thingy??  I'm right on the edge of understanding half of what I read about 
Tkinter. :)

Thanks!

Bob




From news at NOwillmcguganSPAM.com  Fri May 20 05:35:37 2005
From: news at NOwillmcguganSPAM.com (Will McGugan)
Date: Fri, 20 May 2005 10:35:37 +0100
Subject: PyGame and Rotozoom (Sorry if OT)
In-Reply-To: <2Ifje.100148$hu5.2601@tornado.texas.rr.com>
References: <2Ifje.100148$hu5.2601@tornado.texas.rr.com>
Message-ID: <428daf6b$0$24052$db0fefd9@news.zen.co.uk>

J. W. McCall wrote:
> I'm not sure if this is off-topic, since it doesn't deal with Python 
> itself, but here goes:
> 
> I'm messing around with writing a simple "game" where the player (a 
> crudely drawn smiley face) moves by rotating and moving back or forward 
> (think Resident Evil, but from an always-above view).  After much 
> hacking, I have it working where left and right rotate the player sprite 
> and up always moves the sprite whichever direction it's facing, while 
> down is reverse.  I'm using pygame.transform.RotoZoom().
> 
> My problem is that it doesn't rotate smoothly.  When it rotates, the 
> corners of the image (just a plain white background) look like they're 
> hitting some barrier and making it move around.  Think of an empty box 
> turned diagonally (so that it looks like a diamond, with its open end 
> facing you), and a cube in that box being turned while it's resting in 
> the bottom corner.  I want it to rotate smoothly around its center, it's 
> it's not doing that.
> 
> I'm guessing that it has something to do with me not setting up a Rect 
> right, but I'm not sure.  Maybe this is a limitation of Rotozoom/Rotate?
> 
> Any advice would be greatly appreciated.  And yes, I'm a rank PyGame 
> newbie.
> 

I'm not sure - haven't actually used rotozoom, but from the docs it 
returns a surface containing the rotated images. The problem with that 
is that a rotated surface wont fit in to the same area, so what you get 
back will be bigger than the original. If you want to draw it at the 
same position, move the rotated surface so that the centre point is the 
same as the original unrotated image.

Creating a new sprite each time is probably quite inefficient. You might 
want to look at OpenGL, which is excellent for 2D and 3D games.


HTH,

Will McGugan


-- 
http://www.willmcgugan.com
"".join( [ {'*':'@','^':'.'}.get(c,None) or chr(97+(ord(c)-84)%26) for c 
in "jvyy*jvyyzpthtna^pbz" ] )


From Servatius.Brandt at fujitsu-siemens.com  Tue May 24 11:00:56 2005
From: Servatius.Brandt at fujitsu-siemens.com (Servatius.Brandt at fujitsu-siemens.com)
Date: Tue, 24 May 2005 17:00:56 +0200
Subject: Build error  Python 2.4.1 - stat problem?
Message-ID: <DE26E293539224499409D3E333E3367F0189EEFD@ABGEX02E.abg.fsc.net>

Hello,

I tried to build Python 2.4.1 on a Reliant Unix system.  Just after the
python executable program has been built, I get the following error:

==== begin make output ===
	CC  -W1 -Blargedynsym -o python \
			Modules/python.o \
			libpython2.4.a -lresolv -lsocket -lnsl -ldl
-lm  
	case $MAKEFLAGS in \
	*-s*)  CC='cc' LDSHARED='ld' OPT='-DNDEBUG -O' ./python -E
./setup.py -q build;; \
	*)  CC='cc' LDSHARED='ld' OPT='-DNDEBUG -O' ./python -E
./setup.py build;; \
	esac
Traceback (most recent call last):
  File "./setup.py", line 1088, in ?
    class PyBuildInstallLib(install_lib):
  File "./setup.py", line 1094, in PyBuildInstallLib
    so_ext = sysconfig.get_config_var("SO")
  File "/build_dir/Python-2.4.1/Lib/distutils/sysconfig.py", line 511,
in get_config_var
    return get_config_vars().get(name)
  File "/build_dir/Python-2.4.1/Lib/distutils/sysconfig.py", line 488,
in get_config_vars
    func()
  File "/build_dir/Python-2.4.1/Lib/distutils/sysconfig.py", line 358,
in _init_posix
    raise DistutilsPlatformError(my_msg)
distutils.errors.DistutilsPlatformError: invalid Python installation:
unable to open /usr/local/lib/python2.4/config/Makefile (No such file or
directory)
make: *** Error code 1

make: Fatal error.
==== end make output ===

It is strange that the Makefile complains about /usr/local/lib/python2.4
since this is still the build phase, far away from the installation into
/usr/local.


I used the python executable from the build directory to run the
following program:

    import os

    def main():
        if not (os.path.exists("/")):
            print "/ does not exist"
        else:
            print "/ exists"
        if not (os.path.isdir("/")):
            print "/ is not a directory"
        else:
            print "/ ok"
    
    if __name__ == "__main__":
        main()

The output is:

    / exists
    / is not a directory

It's the same for every (existing) directory name I try: os.path.isdir()
always returns false.

It looks as if the stat results are not recognised: os.path.exists()
works, but all the functions os.path.isdir(), os.path.isfile() etc.
don't.

Could anyone help me to solve the problem?

- Servatius

------------------------------------------------------------------------
Servatius Brandt             Phone: +49 89 636-41504
Fujitsu Siemens Computers    Fax:   +49 89 636-48716
EP SW AD C++                 Email: Servatius.Brandt at fujitsu-siemens.com


From sxanth at ceid.upatras.gr  Wed May 11 06:02:59 2005
From: sxanth at ceid.upatras.gr (Stelios Xanthakis)
Date: Wed, 11 May 2005 13:02:59 +0300
Subject: pyvm -- faster python
In-Reply-To: <vu38l2-k5v.ln1@home.rogerbinns.com>
References: <mailman.164.1115548611.29826.python-list@python.org><1115561483.741761.212140@f14g2000cwb.googlegroups.com><m102l2-9qr.ln1@home.rogerbinns.com>
	<mailman.264.1115716603.29826.python-list@python.org>
	<vu38l2-k5v.ln1@home.rogerbinns.com>
Message-ID: <4281D853.9000600@ceid.upatras.gr>

Roger Binns wrote:
>>I am not very interested on C compatibility.
> 
> 
> That will rule out all the gui frameworks, SSL, cryptography
> and numerous other packages.  Have a look at what happened to
> Prothon.  What ultimately killed it was the problem of having
> a decent library.  You don't have to make the C library
> compatibility totally high performance, but having any form of
> it there will make adoption by others easier.
> 

There are two kinds of C modules: those that do have a knowledge
of the C API (like sre, tkinter, etc) and those that are just C/C++
libraries which are simply wrapped as modules.  For the latter there
are two solutions besides adding a wrapper which makes pyvm appear
as libpython:
	- an advanced ctypes module which will make dlopening libraries
	and wrapping their symbols behind python functions, a matter of
	python code.  I'm considering this approach to provide things
	like 'raw_input'.
	- hacking SWIG.  Shouldn't be too hard and will instantly give
	us access to wx, qt, etc.

The thing is that the C API of pyvm is IMHO superior and much more fun.
You can wrap the entire sockets module in a couple of hours and also
enjoy it.  I wish I could clone myself to port the entire std library
to pyvm -- so much fun it is:)


thanks,

Stelios


From curi at curi.us  Fri May 27 02:36:30 2005
From: curi at curi.us (Elliot Temple)
Date: Thu, 26 May 2005 23:36:30 -0700
Subject: Strange Execution Times
In-Reply-To: <42964C28.8070400@lexicon.net>
References: <3A252A14-E6A4-4F9B-AB49-B6B012A0BC12@curi.us>
	<42964C28.8070400@lexicon.net>
Message-ID: <FD841B26-5489-4748-B702-BB857BD70DA0@curi.us>


On May 26, 2005, at 3:22 PM, John Machin wrote:
>
> Then post your summarised results back to the newsgroup for the  
> benefit of all -- there's this vague hope that folk actually read  
> other peoples' posts before firing off questions :-)

Here is my new version.  It runs in about .65 seconds.  The trick?   
Reading lines one at a time.  Please let me know if there's any bad  
coding practices in it!


def main():

     import md5
     import time

     f = open("data.xml", "rU")
     out = open("out.xml", "w")
     p1 = "<Password>"
     p2 = "</Password>"
     adjust = len(p1)

     t1 = time.clock()
     for line in f:
         start, end = line.find(p1) + adjust, line.find(p2)
         if end != -1:
             digest = md5.new(line[start:end]).hexdigest()
             out.write(line[:start] + digest + line[end:])
         else:
             out.write(line)

     t2 = time.clock()
     print round(t2-t1, 5)

     f.close()
     out.close()

if __name__ == '__main__': main()


-- Elliot Temple
http://www.curi.us/


---
[This E-mail scanned for viruses by Declude Virus]



From fredrik at pythonware.com  Thu May 12 06:45:36 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 12 May 2005 12:45:36 +0200
Subject: Destructor Woes, was Advice needed on __del__
References: <d5o1s1$8h3$1@sea.gmane.org>	<d5obmp$cqh$1@sea.gmane.org>	<427FBAD4.3070004@anvilcom.com>	<d5ogv2$2k9$1@sea.gmane.org>	<42800279.3B26FFF3@pauahtun.org>	<mailman.244.1115687630.29826.python-list@python.org><DS1ge.87015$Tk7.5147767@phobos.telenet-ops.be>
	<4280EDA3.1090104@anvilcom.com>
Message-ID: <d5vblv$d0m$1@sea.gmane.org>

"phil" <phillip.watts at anvilcom.com> wrote:

>> Then i got a tip that you can register a function that needs to be
>> called when the object is going to be deleted.
>> For instance to register a function __exit, you do this:
>
> Here is the complete line class with your suggestion:
>
> Below is the output.
>
> Nice idea, maybe I did something wrong?
>
> class line:
> def __init__(s,glob,argl,color=''):
>     atexit.register(s.__exit)

atexit is used to clean up when the *interpreter* shuts down, not when
any object is going to be deleted.

>   File "/usr/local/lib/python2.3/lib-tk/Tkinter.py", line 2085, in delete
>     self.tk.call((self._w, 'delete') + args)
> _tkinter.TclError: invalid command name ".1076354284"

this usually means that you're trying to execute Tkinter methods on a
widget that no longer exists (probably because Tkinter has been shut
down, at this point).

</F> 





From fredrik at pythonware.com  Thu May  5 16:40:18 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 5 May 2005 22:40:18 +0200
Subject: Encryption with Python?
References: <1115324411.952821.150780@o13g2000cwo.googlegroups.com>
Message-ID: <d5e14j$aaf$2@sea.gmane.org>

Blake T. Garretson wrote:

> I found a few modules out there, but they seem to be all but abandoned.
>  Most seem to have died several years ago.

a lack of recent releases can also mean that they just work...

> Is this the defacto Python encryption solution?  What does everyone
> else use?  Any other suggestions?

    http://sandbox.rulemaker.net/ngps/m2/

is actively maintained, as far as I can tell.

you might also be able to find some useful stuff inside:

    http://trevp.net/tlslite/

(see the utils package for a pure-python AES implementation)

</F>





From vegeta.z at gmail.com  Mon May  2 22:04:40 2005
From: vegeta.z at gmail.com (vegetax)
Date: Mon, 02 May 2005 22:04:40 -0400
Subject: cgi "print statement" in multithreaded enviroment?
References: <d56f4t$sch$1@sea.gmane.org> <20050503013716.GA3367@unpythonic.net>
Message-ID: <d56lrn$h9u$1@sea.gmane.org>

Jeff Epler wrote:

> You could write something like
>     class ThreadSpecificFile:
>         def set_stdout(f):
>             self.files[thread_id] = f
>         def write(data):
>             self.files[thread_id].write(data)
>     sys.stdout = ThreadSpecificFile()
> where you'll have to fill out a few more things like thread_id,
> __init__, and a way to clean up items from self.files when a thread
> passes away.
> 
> Jeff

Thats what i was looking for,Thanks =)



From luismgz at gmail.com  Sun May  1 19:52:12 2005
From: luismgz at gmail.com (Luis M. Gonzalez)
Date: 1 May 2005 16:52:12 -0700
Subject: Whats the best Python Book for me
In-Reply-To: <zQade.1185052$Xk.1184944@pd7tw3no>
References: <zQade.1185052$Xk.1184944@pd7tw3no>
Message-ID: <1114991532.372691.177740@z14g2000cwz.googlegroups.com>

For someone expereinced like you, I recommend "Dive into Python". It is
available online.
There's also a very good tutorial which is aimed to both, beginners and
experienced programmers, that can give you a very complete and high
level overview of the python language: "A byte of Python". Also
available online.



From Sebastien.Boisgerault at gmail.com  Sun May 29 07:54:54 2005
From: Sebastien.Boisgerault at gmail.com (=?iso-8859-1?q?S=E9bastien_Boisg=E9rault?=)
Date: 29 May 2005 04:54:54 -0700
Subject: ControlDesk Automation in dSpace
In-Reply-To: <1117357685.430456.257870@g43g2000cwa.googlegroups.com>
References: <1117357685.430456.257870@g43g2000cwa.googlegroups.com>
Message-ID: <1117367694.056936.85110@f14g2000cwb.googlegroups.com>

Crispen a ?crit :
> I am having trouble using the ControlDesk automation libraries in
> python. In particluiar running the automation in a thread. My code is
> as follows, is keeps coming up with this strange error. Any help would
> be great.
>
> Crispen
>
> import cdacon
> from time import sleep
> from cdautomationlib import *
>
> def Auto():
> [... skip ...]
> thread.start_new_thread(Auto,())

Crispen,

I am afraid that you won't find many dspace users on
comp.lang.python. The code you produced is quite hard
to read, we lack some info about the context of your
app and you didn't provide what the error you encounter
is ...

Maybe you should provide a minimal python code that
does not work, and give us the corresponding error
message.

If it is Python related, I guess that you'll probably
get a reply. If it is related to dspace, maybe you
should try comp.soft-sys.matlab (?), or any other group
that may discuss dspace issues.

Regards,

Seb



From newsgroups at jhrothjr.com  Mon May 16 12:13:55 2005
From: newsgroups at jhrothjr.com (John Roth)
Date: Mon, 16 May 2005 10:13:55 -0600
Subject: Structuring larger applications - ideas
References: <1116255787.625276.221670@g14g2000cwa.googlegroups.com>
	<mailman.49.1116257300.8733.python-list@python.org>
	<1116259236.861818.127170@g14g2000cwa.googlegroups.com>
Message-ID: <118hhm6jf40oue6@news.supernews.com>

"Iwan Vosloo" <iv at lantic.net> wrote in message 
news:1116259236.861818.127170 at g14g2000cwa.googlegroups.com...
>
> I know my foreign (to python) one class per module idea is what makes
> life more difficult for me here.  And there is an argument to be made
> out that it is a stupid remnant I stick to from having used it in other
> programming languages (do I have to admit C++ in my background?)  Two
> small examples of where it it useful for me:  my development
> environment is run by make to a large extent.  Many standard UNIX tools
> have the intelligence to deal with filenames, and if you know a file
> corresponds to a class, you have a lot more info available in your
> makefile.

Have you looked at using scons (http://www.scons.org/) instead
of make?

> Also, if I use my version control software (currently gnu
> arch) to see what's changed, for example, I get a list of changes files
> which again gives me more info because I know a file corresponds to a
> class.

> So, I can do a number of such small things using that convention that
> works well with standard old UNIX tools.  And I find that valuable.

Sometimes little conveniences lead to great big tar pits.

> As for the dependencies- I'm trying to keep the specification of them
> simple.  From a design point of view, it makes sense to me to only
> specify ONCE that largeish-collection-of-classes-A depends on
> largeish-collection-of-classes-B.  As another simple small example: say
> I change the name of large-collection-of-classes-B - this way I only
> need to do it once, else I need to grep and sed all over in order to do
> it.
>
> It just feels cleaner and easier.

This is what packages are for. As far as refactoring package alignments,
a little bit of scripting goes a long way. Sometimes trying to make an
existing tool do something that it's not really right for distorts the 
entire
process, rather than simplifies it.

John Roth

>
> -i
> 



From duncan.booth at invalid.invalid  Mon May  2 11:16:39 2005
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 2 May 2005 15:16:39 GMT
Subject: Setting win32 console title from Python
References: <1114684215.236448.212970@g14g2000cwa.googlegroups.com>
	<1114696780.653849.220080@o13g2000cwo.googlegroups.com>
	<1114698836.708809.32780@o13g2000cwo.googlegroups.com>
	<Xns9646A9319F208duncanbooth@127.0.0.1>
	<1114717354.209028.30270@z14g2000cwz.googlegroups.com>
Message-ID: <Xns9646DE4217874duncanbooth@127.0.0.1>

runes wrote:

> Hi Duncan, sorry, I was unprecise.  I'm thinking of a script, called
> t.py  that can be used in the console  like an ordinary command. Som if
> I change directory from S:\scripts to d:\projects and execute the
> script  the title changes to "projects" etc.
> 
> I have that functionality today with a combination of a python script
> and a batch file. I just wondered if I could use python all the way.
> Apparently I cannot.
> 
I think not, although you probably can do it with only the batch file. :)


From Scott.Daniels at Acm.Org  Thu May 19 00:18:29 2005
From: Scott.Daniels at Acm.Org (Scott David Daniels)
Date: Wed, 18 May 2005 21:18:29 -0700
Subject: Comparing 2 similar strings?
In-Reply-To: <24a6d$428b9c10$d1b717f8$2300@PRIMUS.CA>
References: <24a6d$428b9c10$d1b717f8$2300@PRIMUS.CA>
Message-ID: <428c0d21$1@nntp0.pdx.net>

William Park wrote:
> How do you compare 2 strings, and determine how much they are "close" to
> each other?  

Here's a really weird idea:  Measure the size difference between the
pair of strings compressed together and compressed separately.

--Scott David Daniels
Scott.Daniels at Acm.Org


From jrastrick at student.usyd.edu.au  Wed May 18 02:11:21 2005
From: jrastrick at student.usyd.edu.au (Jordan Rastrick)
Date: 17 May 2005 23:11:21 -0700
Subject: "End Of Line" Confusion
In-Reply-To: <1116370499.324399.8920@z14g2000cwz.googlegroups.com>
References: <1116370499.324399.8920@z14g2000cwz.googlegroups.com>
Message-ID: <1116396681.298692.289380@g43g2000cwa.googlegroups.com>

Well, copying and pasting this text, and changing <<<NAME>>> to Foo so
that its a legal Python identifier (why did you not want to name your
class, out of curiosity), I get no problems with this.

class Foo:
    def digest():
        ''' char[28] digest ( )

        Return the digest of the strings passed to the update() method
so far.
        This is a 28-byte string which may contain non-ASCII
characters,
        including null bytes.
        '''
        raise NotImplementedError, 'digest() is not yet implemented.'

>>> foo = Foo()
>>> foo
<__main__.Foo instance at 0x00B30C38>

So all I can suggest is that you have accidentally mixed double and
single quotes, or there is a quote mark somewhere in the docstring in
your copy of the code, or some strange, platform/system/text editor/etc
specific bug is causing this, or i don't know what else.

Oh and btw, I suspect, form the lack of @staticmethod on the line above
def digest():, that you perhaps meant def digest(self): ?



From me at privacy.net  Fri May 13 06:57:53 2005
From: me at privacy.net (Dan Sommers)
Date: 13 May 2005 06:57:53 -0400
Subject: function with variable arguments
References: <1115977954.266898.141150@g49g2000cwa.googlegroups.com>
Message-ID: <m2r7gbqtou.fsf@unique.fully.qualified.domain.name.yeah.right>

On 13 May 2005 02:52:34 -0700,
"Xah Lee" <xah at xahlee.org> wrote:

> i wanted to define a function where the number of argument matters.
> Example:

> def Range(n):
>     return range(n+1)

> def Range(n,m):
>     return range(n,m+1)

> def Range(n,m,step):
>     return range(n,m+1,step)

> this obvious doesn't work. The default argument like
> Range(n=1,m,step=1) obviously isn't a solution.

> can this be done in Python?

Assuming you're doing something more interesting than wrapping range:

    def Range( start, stop = None, step = 1 ):
        if stop == None: # i,e., we only got one argument
            stop = start
            start = 1
        # rest of function goes here....

HTH,
Dan

-- 
Dan Sommers
<http://www.tombstonezero.net/dan/>


From rrr at ronadam.com  Tue May 10 20:01:41 2005
From: rrr at ronadam.com (Ron Adam)
Date: Tue, 10 May 2005 20:01:41 -0400
Subject: Python 2.4 & BLT ?
In-Reply-To: <4280f791$0$344$4d4efb8e@read.news.be.uu.net>
References: <4280f791$0$344$4d4efb8e@read.news.be.uu.net>
Message-ID: <42814B65.10300@ronadam.com>

StepH wrote:
> Hi,
> 
> I'm not able to install BLT on my Python 2.4 (upgraded to 2.4.1) 
> distibution...
> 
> I'v try to download btlz-for-8.3.exe, but when i try to install it, i've 
> a msgbox saying to the file is corrupt...
> 
> Any idea ?
> 
> Thanks.
> 
> StepH.

Have you tried blt2.4z-for-8.4exe?

http://blt.sourceforge.net


_Ron




From kent37 at tds.net  Tue May 31 08:44:23 2005
From: kent37 at tds.net (Kent Johnson)
Date: Tue, 31 May 2005 08:44:23 -0400
Subject: regular expression problem
In-Reply-To: <1117527562.055872.93830@o13g2000cwo.googlegroups.com>
References: <1117527562.055872.93830@o13g2000cwo.googlegroups.com>
Message-ID: <429c5c02$1_2@newspeer2.tds.net>

borges2003xx at yahoo.it wrote:
> hi everyone
> there is a way, using re, to test (for es) in
> a=[a1,a2,a3,a4,a5,a6,a7,a8,a9,a10,a11,a12,a13,a14] if a list b is
> composed by three "sublists" of a separated or not by elements.
> 
> if b=[a2,a3,a4,a7,a8,a12,a13] gives true because in a
> we have [....,a2,a3,a3,...,a7,a8,...,a12,a13,...]
> or b=[a1,a2,a5,a14] gives true because in a we have
> [a1,a2,....,a5,...,a14] and so on...

difflib.SequenceMatcher can do this for you:

  >>> a = [1,2,3,4,5,6,7,8,9,10,11,12,13,14]
  >>> b = [2,3,4,7,8,12,13]
  >>> import difflib
  >>> sm = difflib.SequenceMatcher(None, a, b)
  >>> sm.get_matching_blocks()
[(1, 0, 3), (6, 3, 2), (11, 5, 2), (14, 7, 0)]
  >>> b = [1, 2, 5, 14]
  >>> sm = difflib.SequenceMatcher(None, a, b)
  >>> sm.get_matching_blocks()
[(0, 0, 2), (4, 2, 1), (13, 3, 1), (14, 4, 0)]

You should test for len(sm.get_matching_blocks()) == 4 (the last element is a dummy)

Kent


From ionel.mc at gmail.com  Tue May 24 14:07:50 2005
From: ionel.mc at gmail.com (ionel)
Date: Tue, 24 May 2005 20:07:50 +0200
Subject: first release of PyPy
In-Reply-To: <42934634.5060105@gmx.de>
References: <mailman.264.1116625088.8733.python-list@python.org>
	<1116629407.638782.145950@g47g2000cwa.googlegroups.com>
	<mailman.9.1116831944.18027.python-list@python.org>
	<d6sn2f$18d$1@news.doit.wisc.edu>
	<mailman.29.1116868886.18027.python-list@python.org>
	<1116880764.260884.286720@g49g2000cwa.googlegroups.com>
	<42934634.5060105@gmx.de>
Message-ID: <b322b4e605052411071a5c2606@mail.gmail.com>

so what could this PyPy do in the future ?  .. concretely ...
hope this is not a stupid question

-- 
ionel.


From Bernd.Nawothnig at t-online.de  Sun May 15 02:40:34 2005
From: Bernd.Nawothnig at t-online.de (Bernd Nawothnig)
Date: Sun, 15 May 2005 08:40:34 +0200
Subject: A new to Python question
References: <1116088663.428932.130860@g43g2000cwa.googlegroups.com>
	<rfnhl2-ig5.ln1@Bernd.Nawothnig.dialin.t-online.de>
	<1116093118.599403.35940@g14g2000cwa.googlegroups.com>
	<tsKdnfF2xaKu3BvfRVn-iQ@comcast.com>
	<1116102355.715816.192840@z14g2000cwz.googlegroups.com>
	<42866cb8.177725696@news.oz.net>
	<1116109657.494997.315650@o13g2000cwo.googlegroups.com>
Message-ID: <2g7jl2-qf8.ln1@Bernd.Nawothnig.dialin.t-online.de>

On 2005-05-14, M.E.Farmer wrote:

> I explained what i meant in previous post there was nothing more than
> just a discussion

No. You claimed

<quote>
This will only create a tuple in memory
</quote>

But we just learned that this is not the case.

> I have no real problem here just more of a sore point in style for
> me. I feel that parens are quite overloaded and it can be confusing
> to newbies. But if the parens are just fluff then get rid of them, it
> is clearer * at least to me * ;)

Reduced to this argument I have no objection.

> There are enough things wrapped in parens nowadays it is starting to
> look like lisp.

Lisp is far from being ugly ;-)




Bernd

-- 
Those who desire to give up freedom in order to gain security,
will not have, nor do they deserve, either one. [T. Jefferson]


From rupole at hotmail.com  Fri May 13 07:18:18 2005
From: rupole at hotmail.com (Roger Upole)
Date: Fri, 13 May 2005 07:18:18 -0400
Subject: working directory for debugging in pythonwin
References: <3eem0kF2ngvjU1@individual.net> <4283A2DE.7030503@sympatico.ca>
	<3ejeq4F3di4bU1@individual.net>
Message-ID: <42848dd5$1_1@spool9-west.superfeed.net>

You could pass the directory in as an optional extra argument
to the script.  Alternately, you might accept either a bare file name
or a full path.

        Roger


-- 
This signature was intentionally left blank.
    (except it's not, wtf ??????)

"Thomas Pfaff" <yael at gmx.net> wrote in message 
news:3ejeq4F3di4bU1 at individual.net...
> Colin J. Williams schrieb:
>> Thomas Pfaff wrote:
>>
>>> Hello all,
>>>
>>> I started using the nice Pythonwin IDE together with Python 2.3 (I have
>>> come to prefer its editor to IDLE).
>>> My problem is, that when I want to run a script in the debugger, I can
>>> give the script name and arguments, but I can't tell it in which
>>> directory it should run.
>>>
>>> I googled this group but didn't find anything helpful so far.
>>>
>>> I could use some os.chdir in my code, but that's ugly and I neither want
>>> to copy the script around to the places where I would like to test it.
>>>
>>> Any suggestions?
>>>
>>> Thanks in advance
>>>
>>>
>>> Thomas
>>
>> Thomas,
>>
>> When you have initiated PythonWin, try opening (^O) the file you wish to
>> debug.  By selecting the file directory and file you have chosen the
>> current working directory for the file.
>>
>> Alternatively, in the Windows Explorer, try right clicking on the py
>> file you wish to debug.  One of the options given is likely to be
>> PythonWin.
>>
>> Colin W.
>
> Well this is what I do not want to do.
> I want to have the script in some folder /source/myscript.py but run it
> on data in e.g. /path/to/data/ like I would do on the commandline with
>
> $ cd /path/to/data
> $ pypthon /source/myscript.py local-file.dat
>
>
> Cheers,
>
>
> Thomas 



----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups
----= East and West-Coast Server Farms - Total Privacy via Encryption =----


From rrr at ronadam.com  Wed May 11 18:31:53 2005
From: rrr at ronadam.com (Ron Adam)
Date: Wed, 11 May 2005 18:31:53 -0400
Subject: Python 2.4 & BLT ?
In-Reply-To: <42823F8D.6010705@teledisnet.be>
References: <4280f791$0$344$4d4efb8e@read.news.be.uu.net>	<mailman.317.1115769735.29826.python-list@python.org>
	<42823F8D.6010705@teledisnet.be>
Message-ID: <428287D9.3080902@ronadam.com>

StepH wrote:
> Ron Adam a ?crit :
> 
>>StepH wrote:
>>
>>
>>>Hi,
>>>
>>>I'm not able to install BLT on my Python 2.4 (upgraded to 2.4.1) 
>>>distibution...
>>>
>>>I'v try to download btlz-for-8.3.exe, but when i try to install it, 
>>>i've a msgbox saying to the file is corrupt...
>>>
>>>Any idea ?
>>>
>>>Thanks.
>>>
>>>StepH.
>>
>>
>>Have you tried blt2.4z-for-8.4exe?
>>
>>http://blt.sourceforge.net
> 
> 
> yes.  When i try to execute it, a small msgbox apprea with the msg:
> Corrupt installation detected!
> 
> Any idea ?

Sounds like it might not be a corrupted install exe file, but a 
previously installed version that is corrupted.

Does the message box say anything else?  With just "Corrupt installation 
detected!", it could also be a support file or missing dll that the 
installer needs.

_Ron









From tassilo.von.parseval at rwth-aachen.de  Tue May 24 03:16:02 2005
From: tassilo.von.parseval at rwth-aachen.de (Tassilo v. Parseval)
Date: Tue, 24 May 2005 09:16:02 +0200
Subject: What are OOP's Jargons and Complexities?
References: <1116843761.619249.144790@g47g2000cwa.googlegroups.com>
	<bAske.14563$yx.14338@fe08.lga> <3584469.Aerji1NdQr@yahoo.com>
	<qEuke.24657$NZ1.533@fe09.lga>
Message-ID: <slrnd95l5i.r5.tassilo.von.parseval@localhost.localdomain>

Also sprach John W. Kennedy:

> alex goldman wrote:
>> John W. Kennedy wrote:
>> 
>> 
>>>Strong typing has been a feature of mainstream programming languages
>>>since the late 1950's.
>> 
>> I'm just curious, what do you mean by /strong/ typing, and which strongly
>> typed languages do you know?
>
> Unfortunately, I have seen the meaning shift with the context. In Ada 
> '83, it means it is not possible to have the equivalent of a C 
> unprototyped function, and that mixed-type expressions tend to need 
> explicit casting. In other contexts (as here), I've seen it used to mean 
> simply that variables have definite types, and it is not possible 
> (except by the use of polymorphic classes) for a variable to change from 
> an integer to a float to a character string in the course of execution. 
> In this sense, compile-to-machine-code languages (ee.g., Fortran, COBOL, 
> C, C++, or Pascal), are generally strongly typed 

These are statically typed. The extent to which they are also strongly
typed differs: C++ is probably a little more strongly typed than C, but
by and large their typing is still fairly weak.

Most often, languages with strong typing can be found on the functional
front (such as ML and Haskell). These languages have a dynamic typing
system. I haven't yet come across a language that is both statically and
strongly typed, in the strictest sense of the words. I wonder whether
such a language would be usable at all.

Tassilo
-- 
use bigint;
$n=71423350343770280161397026330337371139054411854220053437565440;
$m=-8,;;$_=$n&(0xff)<<$m,,$_>>=$m,,print+chr,,while(($m+=8)<=200);


From a at b.c  Thu May  5 11:17:52 2005
From: a at b.c (D H)
Date: Thu, 05 May 2005 10:17:52 -0500
Subject: How to write this regular expression?
In-Reply-To: <maednQfrx_iwL-XfRVn-hA@powergate.ca>
References: <mailman.139.1115189526.6583.python-list@python.org>
	<maednQfrx_iwL-XfRVn-hA@powergate.ca>
Message-ID: <Av-dnbF5u_SOpOffRVn-vQ@comcast.com>

Peter Hansen wrote:
> could ildg wrote:
> 
>> I need a regular expression to check if a string matches it.
> 
> 
> Why do you think you need a regular expression?
> 
> If another approach that involved no regular expressions worked much 
> better, would you reject it for some reason?
> 
> -Peter

A regular expression will work fine for his problem.
Just match the digits separated by underscores using a regular 
expression, then afterward check if the values are valid.


From skip at pobox.com  Thu May 12 10:55:45 2005
From: skip at pobox.com (Skip Montanaro)
Date: Thu, 12 May 2005 09:55:45 -0500
Subject: Sleepycat Bsdbd 4.3.27 and Python 2.4.1
In-Reply-To: <52DC70C1C1575C418CB033523A29CF1403AD5395@exchange2000.manord.com>
References: <52DC70C1C1575C418CB033523A29CF1403AD5395@exchange2000.manord.com>
Message-ID: <17027.28273.363262.337516@montanaro.dyndns.org>


    Marco> I've just compiled Python 2.4.1 on a linux box (RHEL 3AS) after
    Marco> having installed Berkeley DB 4.3.27 from sleepycat Software.
    Marco> During the configure/build process python correctly found the
    Marco> BSBDB library.

    ...

    Marco>   File "/usr/local/lib/python2.4/bsddb/__init__.py", line 339, in _openDBEnv
    Marco>     e.open('.', db.DB_PRIVATE | db.DB_CREATE | db.DB_THREAD | db.DB_INIT_LOCK | db.DB_INIT_MPOOL)
    Marco> DBError: (156471272, 'Unknown error 156471272')

    Marco> Any hint or suggestion is welcom

Was your shelve file created with an earlier version of Berkeley DB?  If so,
you probably have to update the file so it can be read by the new version.
As part of the Berkeley DB install/upgrade you should probably have a
db_upgrade command.  Check it out.

Skip


From jhylton at gmail.com  Sun May 22 13:12:35 2005
From: jhylton at gmail.com (Jeremy Hylton)
Date: Sun, 22 May 2005 13:12:35 -0400
Subject: [ZODB-Dev] ZODB memory problems (was: processing a Very Large
	file)
In-Reply-To: <200505211300.09563.usenet@terabytemusic.cjb.net>
References: <200505211300.09563.usenet@terabytemusic.cjb.net>
Message-ID: <e8bf7a53050522101272d789f@mail.gmail.com>

On 5/21/05, DJTB <usenet at terabytemusic.cjb.net> wrote:
> [posted to comp.lang.python, mailed to zodb-dev at zope.org]

[Following up to both places.]

> I'm having problems storing large amounts of objects in a ZODB.
> After committing changes to the database, elements are not cleared from
> memory. Since the number of objects I'd like to store in the ZODB is too
> large to fit in RAM, my program gets killed with signal 11 or signal 9...

The problem here is a common one with a first attempt at using ZODB. 
The problem is that ZODB manages memory at the granularity of
first-class persistent objects --  that is, instances of classes that
inherit from Persistent.  ZODB can move such objects in and out of
memory at transaction boundaries, which allows your application to use
many more objects than it has physical memory for.

It looks like your application has a single persistent instance -- the
root ExtendedTupleTable -- so there's no way for ZODB to manage the
memory.  That object and everything reachable from it must be in
memory at all times.

You need to re-structure the program so that is has more first-class
persistent objects.  If, for example, the ExtendedTuple objects
inherited from Persistent, then they could reside on disk except when
you are manipulating them.

The ObjectInterning instance is another source of problem, because
it's a dictionary that has an entry for every object you touch.  The
various other dictionaries in your program will also be memory hogs in
they have very many entries.  The typical way to structure a ZODB
program is to use one of the BTrees implementation types instead of a
dictionary, because the BTree does not keep all its keys and values in
memory at one time.  (Its internal organization is a large collection
of first-class persistent objects representing the BTree buckets and
internal tree nodes.)

You must use some care with BTrees, because the data structure
maintains a total ordering on the keys.  (And a dictionary does not.) 
  The ZODB/ZEO programming guide has a good section on BTrees here:
http://www.zope.org/Wikis/ZODB/guide/node6.html

Jeremy


From steven.bethard at gmail.com  Sun May 29 16:13:50 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Sun, 29 May 2005 14:13:50 -0600
Subject: how to convert string to list or tuple
In-Reply-To: <Xns9665B54CBAA38duncanbooth@127.0.0.1>
References: <d74dbl$h91$1@news.yaako.com>
	<mailman.131.1117109560.18027.python-list@python.org>
	<1117383768.099922.308760@o13g2000cwo.googlegroups.com>
	<Xns9665B54CBAA38duncanbooth@127.0.0.1>
Message-ID: <KpKdnfZemtzivwffRVn-sA@comcast.com>

Duncan Booth wrote:
> Dan Bishop wrote:
>> Or if you do use eval, don't give it access to any names.
[snip]
>> os.system("rm -rf *")
>> Traceback (most recent call last):
>>   File "<stdin>", line 1, in ?
>>   File "<string>", line 0, in ?
>> NameError: name 'os' is not defined
> 
> Have you tried giving it the string '__import__("os").system("rm -rf *")'?
> [Don't try that at home children!]

But you can try it at home if you set __builtins__ to something other 
than the default:

py> eval("""__import__("os").system('echo "hello"')""", 
dict(__builtins__=None))
Traceback (most recent call last):
   File "<interactive input>", line 1, in ?
   File "<string>", line 0, in ?
NameError: name '__import__' is not defined

If you're just doing work with constants, the lack of access to any 
builtins is ok:

py> eval("(1,2,3)", dict(__builtins__=None))
(1, 2, 3)

I know there have been security holes in this technique before, but I 
looked at the archives, and all the old ones I found have been patched. 
  (Or at least I wasn't able to reproduce them.)

STeVe


From grante at visi.com  Thu May  5 22:44:43 2005
From: grante at visi.com (Grant Edwards)
Date: Fri, 06 May 2005 02:44:43 -0000
Subject: How to detect a double's significant digits
References: <1115314620.902071.323410@f14g2000cwb.googlegroups.com>
	<dOtee.706030$w62.64217@bgtnsc05-news.ops.worldnet.att.net>
	<pan.2005.05.05.20.32.38.680014@jerf.org>
Message-ID: <117lmgrjssnlf04@corp.supernews.com>

On 2005-05-05, Jeremy Bowers <jerf at jerf.org> wrote:

> Since I think he mentioned something about predicting how much
> space it will take to print out, my suggestion is to run
> through whatever printing routines there are and get a string
> out,

A step which will require him to tell the printing routine how
many digits he wants printed.

-- 
Grant Edwards                   grante             Yow!  FUN is never having
                                  at               to say you're SUSHI!!
                               visi.com            


From sarapythonlist at yahoo.com  Sat May  7 12:07:11 2005
From: sarapythonlist at yahoo.com (Sara Khalatbari)
Date: Sat, 7 May 2005 09:07:11 -0700 (PDT)
Subject: path(file)
Message-ID: <20050507160712.96547.qmail@web61105.mail.yahoo.com>

Suppose I have a list of files & I wanna know  their
path.
is there a command that helps me do so in python?


		
Yahoo! Mail
Stay connected, organized, and protected. Take the tour:
http://tour.mail.yahoo.com/mailtour.html



From ajikoe at gmail.com  Mon May  9 14:13:44 2005
From: ajikoe at gmail.com (ajikoe at gmail.com)
Date: 9 May 2005 11:13:44 -0700
Subject: replace string patern with different value
In-Reply-To: <1115653794.833258.236170@z14g2000cwz.googlegroups.com>
References: <1115645021.903836.262590@z14g2000cwz.googlegroups.com>
	<1115653794.833258.236170@z14g2000cwz.googlegroups.com>
Message-ID: <1115662424.641801.62960@f14g2000cwb.googlegroups.com>

Thank you.



From bwooster47 at gmail.com  Thu May  5 09:20:20 2005
From: bwooster47 at gmail.com (bwooster47 at gmail.com)
Date: 5 May 2005 06:20:20 -0700
Subject: Best way to convert a list into function call arguments?
Message-ID: <1115299220.736781.54810@o13g2000cwo.googlegroups.com>

I'm a newcomer to python - what is the best way to convert a list into
a function call agruments?

For example:

list = (2005, 5, 5)

date = datetime.date( list )
fails with:
TypeError: function takes exactly 3 arguments (1 given)

I assumed that since Python allows multiple assignments per statement,
such as
a, b, c = list
the date call above should work...

So, what is the best way to call date?
This works, but looks clunky:
date = datetime.date( list[0], list[1], list[2 )

Thanks!



From sjuranic at gmail.com  Thu May  5 10:39:34 2005
From: sjuranic at gmail.com (Steve Juranich)
Date: Thu, 5 May 2005 07:39:34 -0700
Subject: SWIG and Python incompatibilities?
In-Reply-To: <1115302774.850678.317130@g14g2000cwa.googlegroups.com>
References: <1115302774.850678.317130@g14g2000cwa.googlegroups.com>
Message-ID: <56190b6c0505050739e450b99@mail.gmail.com>

On 5 May 2005 07:19:34 -0700, adsheehan at eircom.net <adsheehan at eircom.net> wrote:
> Hi all,
> 
> Has anyone experienced issues incompatible versions of the above?
> On solaris, we are experiencing suspect crashes & memory leaks?
> 
> How do I determine which versions are proven to be
> compatible/incompatible etc?

We've used Swig 1.3.21 with a couple version of Python now (2.3.3,
2.3.4, 2.4, and now 2.4.1) without any problems.  You might want to
take a look at the code that Swig generates to see if that's really
where your problems are coming from.

Good luck.
-- 
Steve Juranich
Tucson, AZ
USA


From jbellis at gmail.com  Wed May  4 19:07:28 2005
From: jbellis at gmail.com (Jonathan  Ellis)
Date: 4 May 2005 16:07:28 -0700
Subject: postgresql plpython bug
References: <mailman.9.1115223260.29826.python-list@python.org>
Message-ID: <1115248048.454641.263020@f14g2000cwb.googlegroups.com>

Mage wrote:
> create or replace function trigger_keywords_maintain() returns
trigger as $$
>     return 'MODIFY'
> $$ language plpythonu;
>
> update table set id = id where id = 7;
>
> ERROR:  invalid input syntax for type timestamp: "2005-05-03
> 14:07:33,279213"
>
> I see that Python's timestamp format is not accepted by postgresql.

First, you don't give enough context to see where your python code
generates a timestamp, but in any case it's more of a limitation than a
bug that plpython doesn't try to autoconvert certain datatypes.  (Are
you even returning a datetime class, or a string?)

You could play around with strftime to try to get something postgresql
will recognize, but it's probably easier to just return an epoch value
which you can turn into a postgresql timestamp with the abstime
function.

-Jonathan



From nothingcanfulfill at gmail.com  Wed May 11 00:55:30 2005
From: nothingcanfulfill at gmail.com (ncf)
Date: 10 May 2005 21:55:30 -0700
Subject: Python Args By Reference
In-Reply-To: <1182j1daaepv6f4@corp.supernews.com>
References: <1115769308.136143.74080@f14g2000cwb.googlegroups.com>
	<1182j1daaepv6f4@corp.supernews.com>
Message-ID: <1115787330.723188.295610@f14g2000cwb.googlegroups.com>

Ok, I'm relatively new to python (< 1 year experiance), yet I have had
much experiance with other languages.

I never really looked that deeply in the FAQ -- temporary lapse of
stupidity(?). Thanks for the link, the concept seems to help.

The two issues I am having in grasping all of this are as follows:
1) Being new to Python, terms like mutable and immutable. Although I
have probably dealt with them in other languages, the terms by
themselves are a little confusing, but managable overall, so this issue
isn't so big.

2) LARGELY, my issue is as demonstrated by the following code. I was
trying to accomplish an effect similar to what is possible in C.
(Trying to make a pure-python FIPS-180-2 compliant implementation of
the SHA-256 algorithm for more Python practice and to put into some
code for a *trial* secure protocol.)
Example C Code:
#define P(a,b,c,d,e,f,g,h,x,K) \
{ \
temp1 = h + S3(e) + F1(e,f,g) + K + x; \
temp2 = S2(a) + F0(a,b,c); \
d += temp1; h = temp1 + temp2; \
}

Python Code:
def P(a,b,c,d,e,f,g,h,x,K):
    temp1 = h + S3(e) + F1(e,f,g) + K + x
    temp2 = S2(a) + F0(a,b,c)
    d += temp1; h = temp1 + temp2

The reason why it'd be a pain to implement this by any of the methods
provided in the Python FAQs is that SHA-256 rotates the variable order
in the calls. Example code:
    P( A, B, C, D, E, F, G, H, W[ 0], 0x428A2F98 );
    P( H, A, B, C, D, E, F, G, W[ 1], 0x71374491 );
    P( G, H, A, B, C, D, E, F, W[ 2], 0xB5C0FBCF );
    P( F, G, H, A, B, C, D, E, W[ 3], 0xE9B5DBA5 );
    P( E, F, G, H, A, B, C, D, W[ 4], 0x3956C25B );
    P( D, E, F, G, H, A, B, C, W[ 5], 0x59F111F1 );
    P( C, D, E, F, G, H, A, B, W[ 6], 0x923F82A4 );
    P( B, C, D, E, F, G, H, A, W[ 7], 0xAB1C5ED5 );
    P( A, B, C, D, E, F, G, H, W[ 8], 0xD807AA98 );

Since I cannot simply do it the way I had originally seen it, would
there be an alternative method to proforming the operations that I am
missing?

Once again, many thanks for your time.
-Wes



From fuzzyman at gmail.com  Thu May  5 06:42:54 2005
From: fuzzyman at gmail.com (Fuzzyman)
Date: 5 May 2005 03:42:54 -0700
Subject: [ANN] Voidspace Guestbook 1.4.2
Message-ID: <mailman.57.1115315661.29826.python-announce-list@python.org>

Oops, embarrasing bugix release time.

Guestbook 1.4.1 worked fine (wonderfully even) with Python 2.4, but not
with Python 2.3.

This release fixes that, and also another Python 2.2 compatibility
problem (yes I'm testing now...).

Homepage : http://www.voidspace.org.uk/python/guestbook.html
Example : http://www.voidspace.org.uk/cgi-bin/voidspace/guestbook2.py
Quick Download :
http://www.voidspace.org.uk/cgi-bin/voidspace/downman.py?file=guestbook.zip

I might even have spelt my domain name right this time...

Best Regards,

Fuzzyman
http://www.voidspace.org.uk/python



From modelnine at ceosg.de  Fri May 27 09:38:32 2005
From: modelnine at ceosg.de (Heiko Wundram)
Date: Fri, 27 May 2005 15:38:32 +0200
Subject: Incrementing letters
In-Reply-To: <d770dr$7lu$1@nwrdmz03.dmz.ncs.ea.ibs-infra.bt.com>
References: <d770dr$7lu$1@nwrdmz03.dmz.ncs.ea.ibs-infra.bt.com>
Message-ID: <200505271538.36838.modelnine@ceosg.de>

Am Freitag, 27. Mai 2005 13:31 schrieb Michael:
> if(C == 'z') C='a';
> else C++;

if C == "z":
  C = "a"
else:
  C = chr(ord(C)+1)

-- 
--- Heiko.
  see you at: http://www.stud.mh-hannover.de/~hwundram/wordpress/
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From peter at engcorp.com  Mon May 16 12:54:16 2005
From: peter at engcorp.com (Peter Hansen)
Date: Mon, 16 May 2005 12:54:16 -0400
Subject: newbie - variable "buried in quotes"
In-Reply-To: <1116260476.332975.87680@g49g2000cwa.googlegroups.com>
References: <1116260476.332975.87680@g49g2000cwa.googlegroups.com>
Message-ID: <7pmdnSlf65zMTRXfRVn-2A@powergate.ca>

plsullivan wrote:
> I've got a variable deep inside some quotes needed by the application I
> am using. I can't figure out how to make this work. (Also, is there a
> line continuation character?)
> Thanks in advance,
> Phil
> 
> luser = win32api.GetUserName()
> 
> gp.FeatureclassToCoverage_conversion("'Database
> Connections\\%s at GIS_srv-earth.sde\\GIS.GIS.Cadastral\\GIS.GIS.Parcels'
> POLYGON", prcl83, "", "DOUBLE") % luser

The % operator goes immediately after the string on which it operates:

gp.FeatureclassToCoverage_conversion("'Database
Connections\\%s at GIS_srv-earth.sde\\GIS.GIS.Cadastral\\GIS.GIS.Parcels'
POLYGON" % luser, prcl83, "", "DOUBLE")


-Peter


From ruses at users.snip.snip.ch  Fri May 27 05:11:46 2005
From: ruses at users.snip.snip.ch (d'yeux le pair)
Date: Fri, 27 May 2005 11:11:46 +0200
Subject: [OT] Re: Python analog of Ruby on Rails?
In-Reply-To: <mailman.139.1117122997.18027.python-list@python.org>
References: <mailman.100.1117039885.18027.python-list@python.org>	<4294adc3$0$2526$626a14ce@news.free.fr>	<mailman.107.1117051304.18027.python-list@python.org>	<1117073580.063476.125140@g14g2000cwa.googlegroups.com>
	<mailman.139.1117122997.18027.python-list@python.org>
Message-ID: <4296e3fc$1_1@news.bluewin.ch>

Shane Hathaway a ?crit :
> 
> BTW, here's the proper response to that religious thread that keeps
> invading this list:
> 
>     python -c 'print sum([ord(c) for c in "HOLYBIBLE"])'
> 
> I'm Christian and I think it's funny. ;-)

Aha. Notice that the Original Sin story admits a defensible reading
while equating the Holy Bible to the (in)famous tree.

Some background:
> 
>     http://scriptures.lds.org/rev/13/16-18#16

Given context(s), I particularly like the solution (in .sig format) :

666?? -- 666 ~ .666 ~  2/3 ~ 1-1/3 ~ tertium non datur ~ the excluded middle
              ~ "either you are with us, or you are against us"


From eee at nmt.edu  Mon May 16 09:52:54 2005
From: eee at nmt.edu (Earl Eiland)
Date: Mon, 16 May 2005 07:52:54 -0600
Subject: command string good in subprocess.Popen(string) fails in
	process.Process(string)
In-Reply-To: <9YSdnavxIbdvAhXfRVn-1w@powergate.ca>
References: <mailman.43.1116249416.8733.python-list@python.org>
	<9YSdnavxIbdvAhXfRVn-1w@powergate.ca>
Message-ID: <1116251573.27141.634.camel@dulcevida>

from Trent Mick trentm at ActiveState.com:
"You might be able to use or borrow code from my process.py module.
process.py is very similar to Python 2.4's subprocess. It provides a
ProcessOpen class (similar to subprocess' Popen). A ProcessOpen instance
has wait() and kill() methods that work fine on Windows. Under the hood
they are using the Win32 API WaitForSingleObject() and
TerminateProcess() functions."

    http://starship.python.net/~tmick/"

On Mon, 2005-05-16 at 07:27, Peter Hansen wrote:
> Earl Eiland wrote:
> > The command string consists of "filename.exe  instruction1 instruction2
> > ..."  It works in subprocess, but in process, returns the error "can't
> > find the file instruction1".
> > 
> > How do I pass command line instructions in process.Process?  I tried a
> > list ['filename.exe', 'instruction1 instruction2 ...'] with the same
> > result.
> 
> Where are you getting this "process" module from?  It's not standard:
> 
> c:\>python
> Python 2.4 (#60, Nov 30 2004, 11:49:19) [MSC v.1310 32 bit (Intel)] on win32
>  >>> import process
> Traceback (most recent call last):
>    File "<stdin>", line 1, in ?
> ImportError: No module named process
> 
> 
> -Peter



From johnandsarah at estragon.freeserve.co.uk  Sun May  1 18:05:04 2005
From: johnandsarah at estragon.freeserve.co.uk (John Perks and Sarah Mount)
Date: Sun, 1 May 2005 23:05:04 +0100
Subject: MRO problems with diamond inheritance?
Message-ID: <d53jqq$b88$1@newsg4.svr.pol.co.uk>

Trying to create the "lopsided diamond" inheritance below:

>>> class B(object):pass
>>> class D1(B):pass
>>> class D2(D1):pass
>>> class D(D1, D2):pass
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
TypeError: Error when calling the metaclass bases
    Cannot create a consistent method resolution
order (MRO) for bases D1, D2

Is this as intended? Especially since reversing the order makes it OK:

>>> class D(D2, D1):pass
>>> D.__mro__
(<class '__main__.D'>, <class '__main__.D2'>, <class '__main__.D1'>,
<class '__m
ain__.B'>, <type 'object'>)

Why should order of base classes matter? This only affects types,
old-style classes are unaffected.

The workaround to this problem (if it is a problem and not a feature
that I'm misunderstanding) is to put more-derived classes at the front
of the list. I ran into this with dynamically-created classes, and
sorting the bases list with the following comparator put them right:

def cmpMRO(x,y):
    if x == y:
        return 0
    elif issubclass(x, y):
        return -1
    elif issubclass(y, x):
        return +1
    else:
        return cmp(id(x), id(y))

Incidentally, is it safe to have an mro() method in a class, or is this
as reserved as the usual __reserved_words__? Does Python use mro() (as
opposed to __mro__) internally or anything?

Thanks

John





From sjmachin at lexicon.net  Fri May 20 07:24:10 2005
From: sjmachin at lexicon.net (John Machin)
Date: Fri, 20 May 2005 21:24:10 +1000
Subject: Comparing 2 similar strings?
References: <24a6d$428b9c10$d1b717f8$2300@PRIMUS.CA>
	<ukqn811uo3qaa5lpihfq1fu71auuslel10@4ax.com>
	<wOSdnW21Bo1qlBHfRVn-uQ@comcast.com>
	<153o811mt7uhqa3aojb5101sd7qo4jrgps@4ax.com>
	<3f567mF62qlfU1@uni-berlin.de>
Message-ID: <j3ir819u2lhasdrj8qoh2bb858o2fjbl3d@4ax.com>

On 20 May 2005 04:09:26 GMT, ptjm at interlog.com (Patrick TJ McPhee)
wrote:

>In article <153o811mt7uhqa3aojb5101sd7qo4jrgps at 4ax.com>,
>John Machin  <sjmachin at lexicon.net> wrote:
>
>% None of the other approaches make the mistake of preserving the first
>% letter -- this alone is almost enough reason for jettisoning soundex.
>
>Metaphone does, at least in the case of Aaron and Erin.

You're quite correct; moreover NYSIIS does that too.

Dunno what came over me, must be gamma rays or something :-)




From bvande at po-box.mcgill.ca  Thu May 12 09:54:44 2005
From: bvande at po-box.mcgill.ca (Brian van den Broek)
Date: Thu, 12 May 2005 09:54:44 -0400
Subject: Launch file in Notepad
In-Reply-To: <42835db6$0$1334$5fc3050@dreader2.news.tiscali.nl>
References: <42835db6$0$1334$5fc3050@dreader2.news.tiscali.nl>
Message-ID: <42836024.1040102@po-box.mcgill.ca>

George said unto the world upon 2005-05-12 09:41:
> Newbie question:
> 
> I'm trying to lauch Notepad from Python to open a textfile:
> 
> import os
> b1="c:\test.txt"
> os.system('notepad.exe ' + b1)
> 
> However, the t of test is escaped by the \, resulting in Notepad trying 
> to open "c: est.txt".
> 
> How do I solve this?

There are several ways, but the preferred solution is to switch the 
slash direction: "c:/test.txt". Python's smart enough to notice its 
running on Windows and do the right thing with the slash. (Other 
choice include using raw strings: r"c:\test.txt", and explicitly 
escaping the backslash: "c:\\test.txt".)

Best,

Brian vdB



From flupke at nonexistingdomain.com  Tue May 10 08:33:39 2005
From: flupke at nonexistingdomain.com (flupke)
Date: Tue, 10 May 2005 12:33:39 GMT
Subject: Advice needed on __del__
In-Reply-To: <mailman.244.1115687630.29826.python-list@python.org>
References: <d5o1s1$8h3$1@sea.gmane.org>	<d5obmp$cqh$1@sea.gmane.org>	<427FBAD4.3070004@anvilcom.com>	<d5ogv2$2k9$1@sea.gmane.org>
	<42800279.3B26FFF3@pauahtun.org>
	<mailman.244.1115687630.29826.python-list@python.org>
Message-ID: <DS1ge.87015$Tk7.5147767@phobos.telenet-ops.be>

phil wrote:
<snip>

> A class instance based language doesn't have to BE C++ to have a
> destructor method.
> 
> All I wanted to know is: is the apparent treatment of __del__
> which SEEMS to work fine for me in 2.3.4 deprecated or mangled
> in some later release or future plans.
> If someone doesn't know the answer to this question or if noone
> knows the answer to this question, I will still love and
> respect the Python Community.  In large part cause it ain't C++>

I like to use destructors to and find the way __del__ works a bit 
strange. For instance if you want to use a class variable in the __del__ 
function it's possible that it's not reachable via 
<classname>.<variable> and then you have to call it via 
self.__class__.<variable>.
I find this non intuitive. I heard the explanations why but that doens't 
make it more intuitive.

Then i got a tip that you can register a function that needs to be 
called when the object is going to be deleted.
For instance to register a function __exit, you do this:

import atexit
...
class Bla:
     def __init__(self)
     ...
         atexit.register(self.__exit)
     ...
     def __exit(self):

It still doesn't feel right to me as i would rather use __del__ but 
since the behaviour can't be predicted, using atext is the next best thing

Benedict


From mefjr75 at hotmail.com  Mon May  2 01:10:04 2005
From: mefjr75 at hotmail.com (M.E.Farmer)
Date: 1 May 2005 22:10:04 -0700
Subject: Webbrowser On Windows
In-Reply-To: <1115008759.797584.24510@f14g2000cwb.googlegroups.com>
References: <mailman.85.1114978611.14961.python-list@python.org>
	<SBhde.23647$HR1.2796@clgrps12>
	<1115008759.797584.24510@f14g2000cwb.googlegroups.com>
Message-ID: <1115010604.189459.146210@o13g2000cwo.googlegroups.com>

I played around with it.
############################################################################
import pythoncom
from win32com.client import Dispatch
############################################################################
def webbrowser(url=None):
    ie = pythoncom.CoCreateInstance("InternetExplorer.Application",
None,
                     pythoncom.CLSCTX_SERVER,
                     pythoncom.IID_IDispatch)
    ie = Dispatch(ie)
    ie.Navigate
    if url:
        ie.Navigate(url)
    ie.Visible = 1
    return ie
#############################################################################
import time
w = webbrowser()
w.Navigate('http://www.google.com')
time.sleep(2)
w.Navigate('http://dir.gmane.org/gmane.comp.python.general')
time.sleep(2)
webbrowser('http://groups-beta.google.com/group/comp.lang.python?hl=en&lr=')
webbrowser('http://python.org')
#############################################################################
M.E.Farmer



From tjreedy at udel.edu  Tue May  3 02:41:59 2005
From: tjreedy at udel.edu (Terry Reedy)
Date: Tue, 3 May 2005 02:41:59 -0400
Subject: WordPress Python Library 1.0
References: <Rmwde.850131$b5.37722456@news3.tin.it><mailman.49.1115067917.6583.python-list@python.org>
	<VKwde.1322130$35.49403624@news4.tin.it>
Message-ID: <d5763s$n10$1@sea.gmane.org>


"Michele Ferretti" <black.bird at NOSPAMtiscali.it> wrote in message 
news:VKwde.1322130$35.49403624 at news4.tin.it...
Fran?ois Pinard wrote:
> [Michele Ferretti]
>
>>http://www.blackbirdblog.it/programmazione/progetti/28
>
>
> Quoted above, the full content of your article.  Is it a message?  It
> surely does not look like an English sentence.
>
> Should we start a browser each time we see an URL?  Many of us are not
> in such an Internet starvation.  If you want to raise our appetite,
> maybe a few words of introduction or explanation would be welcome. :-)
>

ok, sorry, but subject is very explicit!

Michele, it is both polite and and uncontroversial standard practice in 
Pythonland for announcements to include a sentence or two or a short 
paragraph (in English) explaining what is being announced so people quickly 
know whether it is of any interest or not.  Just watch here and you will 
see many examples.

Terry J. Reedy





From ladasky at my-deja.com  Mon May 16 15:02:31 2005
From: ladasky at my-deja.com (ladasky at my-deja.com)
Date: 16 May 2005 12:02:31 -0700
Subject: trouble with copy/deepcopy
In-Reply-To: <MSGID_2=3A5025=2F3.131_42890b9a@fidonet.org>
References: <MSGID_2=3A5025=2F3.131_42890b9a@fidonet.org>
Message-ID: <1116270151.153816.195420@g47g2000cwa.googlegroups.com>


Alexander Zatvornitskiy wrote:
> Hello!
>
> I have trouble with copy/deepcopy. It seems, I just don't understand
something.
> Please explain where things goes wrong and how to do it the right
way.
>
> I have one class:
>
> class Distribution:
>   __gr_on_transp=dict()
>   __ostatok_m=dict()
> and so on
>
> And, I want to make full copy of it:
> d1=Distribution()
> d2=copy.deepcopy(d1)
>
> But, members-dictionaries are don't copied. For example if I will
write:
> d1.clear()
> which clears all two dictionaries, I will find that d2's dictionaries
are also
> empty!!!
>
> Now I'am using the quick-hack:
>
> class Distribution:
>   __gr_on_transp=dict()
>   __ostatok_m=dict()
>   ...
>   def my_copy(self):
>     d2=copy.deepcopy(self)
>     d2.__gr_on_transp=self.__gr_on_transp.copy()
>     d2.__ostatok_m=self.__ostatok_m.copy()
>     return d2
>
> It's work well, but I don't understand why previous is wrong and how
to do it
> in right way.
>
> Alexander, zatv at bk.ru


Hello, Alexander,

I just asked about deepcopy here in comp.lang.python a few weeks ago.
Here is a link to that discussion:

http://groups-beta.google.com/group/comp.lang.python/browse_frm/thread/41269228e1827a87

You have the right idea when you create a special method inside your
class to handle the deepcopy operation.  But if you call that method
__deepcopy__, then copy.deepcopy() can find it and call it.

In my code, it was also important that I declare my class as a
new-style class, so that I could use the __new__ method.  __new__
constructs a new instance of the class without initializing it.

To make your class into a new-style class, you would write "class
Distribution(object):" instead of just "class Distribution:".

There are more details in the discussion that I referenced above.  Hope
that helps!

--
Rainforest laid low.
"Wake up and smell the ozone,"
Says man with chainsaw.
John J. Ladasky Jr., Ph.D.



From __peter__ at web.de  Wed May  4 15:54:25 2005
From: __peter__ at web.de (Peter Otten)
Date: Wed, 04 May 2005 21:54:25 +0200
Subject: How do you convert a string obj to a file obj?
References: <d5at2j$7uv$1@vegh.ks.cc.utah.edu>
	<42790d0c$0$79465$14726298@news.sunsite.dk>
	<d5b79u$agp$1@vegh.ks.cc.utah.edu>
Message-ID: <d5b98a$vlo$01$1@news.t-online.com>

Matthew Thorley wrote:

> Esben Pedersen wrote:
>> Matthew Thorley wrote:
>> 
>>> I'm writing a web app whereby a user uploads a tar acrhive which is then
>>> opened and processed. My web form reads the file like this:
>>>
>>> while 1:
>>>     data = value.file.read(1024 * 8) # Read blocks of 8KB at a time
>>>     if not data: break
>>>
>>> which leaves me with data as a string obj. The problem that I have is
>>> that the function that processes the archive expects a file object. So
>>> far the only solution I have found it to write the file to disk and then
>>> read it back.
>>>
>>> Is there an easy way to convert data, in the example above into a file
>>> object?
>>>
>>> Thanks
>>> -Matthew
>> 
>> 
>> value.file is a file object. Why don't you give that as an argument?
>> 
>> /Esben
> 
> Ok I tried that but I still get this error. Any clue what I need to do?
> 
> AttributeError: 'file' object has no attribute 'rfind'

str has an rfind() method while file has not:

>>> file.rfind
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
AttributeError: type object 'file' has no attribute 'rfind'
>>> str.rfind
<method 'rfind' of 'str' objects>

So "the function" seems to expect a string rather than a file. Or perhaps
there's an (evil) isinstance(param, file) check somewhere that triggers
param to be treated as a filename. Absent further information, only you can
find out. 

Peter


From jepler at unpythonic.net  Fri May  6 15:44:22 2005
From: jepler at unpythonic.net (Jeff Epler)
Date: Fri, 6 May 2005 14:44:22 -0500
Subject: New Python regex Doc (was: Python documentation moronicities)
In-Reply-To: <1115328523.852744.110390@f14g2000cwb.googlegroups.com>
References: <1113301533.054410.203710@z14g2000cwz.googlegroups.com>
	<mailman.1813.1113355346.1799.python-list@python.org>
	<1113856843.023012.165500@l41g2000cwc.googlegroups.com>
	<1113908069.264676.207090@g14g2000cwa.googlegroups.com>
	<1115328523.852744.110390@f14g2000cwb.googlegroups.com>
Message-ID: <20050506194422.GB27403@unpythonic.net>

To add to what others have said:

* Typos and lack of spell-checking, such as "occurances" vs "occurrences"

* Poor grammar, such as "Other characters that has special meaning
  includes:"

* You dropped version-related notes like "New in version 2.4"

* You seem to love the use of <HR>s, while docs.python.org uses them
  sparingly

* The category names you created, "Wildcards", "Repetition Qualifiers",
  and so forth, don't help me understand regular expressions any better
  than the original document

* Your document dropped some basic explanations of how regular
  expressions work, without a replacement text:
    Regular expressions can be concatenated to form new regular
    expressions; if A and B are both regular expressions, then AB is
    also a regular expression. In general, if a string p matches A and
    another string q matches B, the string pq will match AB. [...] Thus,
    complex expressions can easily be constructed from simpler primitive
    expressions like the ones described here.
  Instead, you start off with one unclear example ("a+" matching
  "aaaahh!") and one misleading example (a regular expression that
  matches some tiny subset of valid e-mail addresses)

* You write
    Characters that have special meanings in regex do not have special
    meanings when used inside []. For example, '[b+]' does not mean one
    or more b; It just matches 'b' or '+'.
  and then go on to explain that backslash still has special meaning; I
  see that the original documentation has a similar problem, but this
  just goes to show that you aren't improving the accuracy or clarity of
  the documentation in most cases, just rewriting it to suit your own
  style.  Or maybe just as an excuse to write offensive things like "[a]
  fucking toy whose max use is as a simplest calculator"

I can't see anything to make me recommend this documentation over the
existing documentation.

Jeff
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From rschroev_nospam_ml at fastmail.fm  Thu May 12 16:17:23 2005
From: rschroev_nospam_ml at fastmail.fm (Roel Schroeven)
Date: Thu, 12 May 2005 20:17:23 GMT
Subject: Python Polymorphism
In-Reply-To: <mailman.495.1115928047.29826.python-list@python.org>
References: <mailman.495.1115928047.29826.python-list@python.org>
Message-ID: <nROge.89215$Kb6.5425239@phobos.telenet-ops.be>

Carlos Moreira wrote:

> So, let's try again.
> Supose that I want to create two methos (inside a
> class) with exactly same name, but number of
> parameters different:
> 
> class myClass:
>      myAttribute = 0
>      def myMethod(self):
>           self.myAttribute += 1
>      def myMethod(self, myValue):
>           self.myAttribute += myValue
> 
> Both method hold same identifier, the only difference
> in them signture are parameters.
> How could I simulate the situation above, using the
> language dynamic link (or polymorphism, as you
> prefer)?

Ah, that's not polymorphism; it's method overloading. And AFAIK it is 
not possible in Python.

-- 
If I have been able to see further, it was only because I stood
on the shoulders of giants.  -- Isaac Newton

Roel Schroeven


From dave at pythonapocrypha.com  Thu May 19 10:42:55 2005
From: dave at pythonapocrypha.com (Dave Brueck)
Date: Thu, 19 May 2005 08:42:55 -0600
Subject: Is Python suitable for a huge, enterprise size app?
In-Reply-To: <7xd5rn93zi.fsf@ruckus.brouhaha.com>
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>	<1116432325.497438.64580@g49g2000cwa.googlegroups.com>	<1116433218.495131.71260@g49g2000cwa.googlegroups.com>	<1116443474.565264.176640@g44g2000cwa.googlegroups.com>
	<7xd5rn93zi.fsf@ruckus.brouhaha.com>
Message-ID: <428CA5EF.5020306@pythonapocrypha.com>

Paul Rubin wrote:
> "Kay Schluehr" <kay.schluehr at gmx.net> writes:
>>To answer Your initial question: there is probably no technical reason
>>against Python as a language or the CPython runtime. Both are very
>>stable and mature.
> 
> 
> I'd like to agree with this but I just can't.  Python is a great
> language for prototyping and trying stuff out.  It's fast and pleasant
> to write.  But you're right when you say that constant testing and
> integration is absolutely necessary to develop anything substantial in
> Python.
[snip]
> I'm in the middle of prototyping something in Python and it's going
> pretty well despite occasional snags like those mentioned above.  But
> at the end of the day I don't think what we get will be solid enough
> for use in production.  We're planning to use the Python prototype to
> get the feature set and protocols figured out, then reimplement in Java.  
> The OP might consider that approach.

You bring up some good points and I imagine the bugs you've encountered are 
pretty frustrating, but I'm surprised at how different our experience has been. 
I know my comments about Python probably come across a "total fan boy" - but for 
us Python has been extremely positive.

We currently use Python, in production, in the following ways:

- custom HTTP web servers
- custom HTTP proxies
- behind-the-scenes log processors and other operational tools
- several Zope-based applications, both internally and externally facing
- both the client and server sides of a distributed work cluster
- the client side of a media encoding farm (server is a Zope app)
- a downloadable Windows client that our customer's customers use, that includes 
a Windows COM server (an ActiveX control we implemented using ctypes).

Most of these have been in production for a year or more, with the oldest being 
about 4 years (not a long time, but certainly long enough to be considered 
stable). The toughest pieces initially were the Zope apps and the Windows COM 
stuff - Zope because of documentation and COM because, well, it's COM.

During that time, the biggest problem we had with Python and its standard 
libraries was one issue with socket.recv and memory allocation when doing lots 
of receives. That lost us a few days of hunting for a memory leak, but we were 
able to resolve it by looking at the C source. Another problem was the need to 
call unlink (or something like that) on XML minidom elements in some 
circumstances. Apart from that, we haven't encountered much of anything in terms 
of bugs in the language or the standard library in *years*. In fact, I don't 
recall encountering a bug in the language itself.

We've generally trailed the standard Python releases by about a year (although 
this week I moved the encoding farm to Python 2.4.1, which is half a year 
early). We don't use Tkinter. We don't use much outside the standard library: we 
make heavy use of ctypes, psycopg (Postgres), and lately CherryPy, but that's 
about it. So for us, the number of bugs in Python + stdlib has been really low.

One thing from your experience that did resonate with me is that, except for 
ftplib and occasionally urllib (for basic, one-shot GETs), we don't use any of 
the standard library's "protocol" modules - partly because we had to implement 
our own HTTP libraries for performance and scalability reasons anyway, and 
partly because we had trouble figuring out e.g. all the ins and outs of 
urllib/urllib2/httplib.

Overall it's been such a positive experience for us that nobody in the company - 
from grunt testers up to the CTO - has any reservations about using Python in 
production anymore (even though initially they all did). All of the developers 
have previous experience with using Java in production systems, and none 
seriously consider it for new projects at all.

-Dave


From ognjen at mailshack.com  Mon May 30 12:09:02 2005
From: ognjen at mailshack.com (Ognjen Bezanov)
Date: Mon, 30 May 2005 17:09:02 +0100
Subject: How to run functions in the background?
Message-ID: <429B3A9E.9060201@mailshack.com>

Hello


I need to find a way to 'fork' a function into the background yet still
be able to send commands to it.

I am writing a media player, and I have a function which plays the
media. I want to be able to run this function but to (at the same time)
be able to send commands from it (e.g. pause, play etc...)

How could I do this?

any help appreciated.



From ken.boss at dnr.state.mn.us  Tue May 31 09:58:59 2005
From: ken.boss at dnr.state.mn.us (ken.boss at dnr.state.mn.us)
Date: 31 May 2005 06:58:59 -0700
Subject: change vars in place w/loop or list comprehension
Message-ID: <1117547939.650578.316090@g47g2000cwa.googlegroups.com>

I am a python newbie, and am grappling with a fundamental concept.  I
want to
modify a bunch of variables in place.  Consider the following:

>>> a = 'one'
>>> b = 'two'
>>> c = 'three'
>>> list = [a, b, c]
>>> for i in range(len(list)):
...   list[i] = list[i].upper()
...
>>> [a, b, c] = list
>>> a
'ONE'

or, better:

>>> a = 'one'
>>> b = 'two'
>>> c = 'three'
>>> [a, b, c] = [s.upper() for s in [a, b, c]]
>>> a
'ONE'

Both of these accomplish what I'm after; I prefer the second for its
brevity.
But either approach requires that I spell out my list of vars-to-alter
[a, b, c] twice.  This strikes me as awkward, and would be difficult
with longer lists. Any suggestions for a better way to do this?

--Ken



From bram at geenspam.sara.nl  Tue May 24 07:20:01 2005
From: bram at geenspam.sara.nl (Bram Stolk)
Date: Tue, 24 May 2005 13:20:01 +0200
Subject: IRIX MipsPro compiler chokes on Python.h
Message-ID: <1116933601.457261@blaat.sara.nl>

Hi there,

I just built and installed Python-2.4.1 on my Irix machine.
My compiler, the MipsPro compiler, chokes on the Python.h include file,
as demonstrated here:


$ CC -v
MIPSpro Compilers: Version 7.41
$ python -V
Python 2.4.1
$ cat l.cxx
#include <Python.h>

int main()
{
   return 0;
}

$ CC -I $HOME/include/python2.4 l.cxx
cc-1311 CC: ERROR File = /usr/include/sys/time.h, Line = 186
   The indicated linkage specification is incompatible with previous "select"
           (declared at line 479 of "/usr/include/unistd.h").

   static int select(
              ^

1 error detected in the compilation of "l.cxx".

Has anyone experienced the same?
How do I solve this?

Thanks,

   Bram Stolk


From python at rcn.com  Thu May 26 01:39:10 2005
From: python at rcn.com (Raymond Hettinger)
Date: 25 May 2005 22:39:10 -0700
Subject: Checking for a full house
References: <1117071824.882035.250710@g49g2000cwa.googlegroups.com>
Message-ID: <1117085950.739186.14240@z14g2000cwz.googlegroups.com>

[mwdsmith]
> Below is my code for checking for a full house (when rolling
> with 5 dice).

There are many ways to do this.  Here's one:

.def isfullHouse(hand):
.    counts = [hand.count(card) for card in set(hand)]
.    return (3 in counts) and (2 in counts) and len(hand)==5


And here's a one-liner:

.def isfullHouse(hand):
.    return sorted(hand.count(card) for card in set(hand)) == [2,3]


Raymond Hettinger



From andrew.markebo at comhem.se  Wed May 18 11:00:10 2005
From: andrew.markebo at comhem.se (Andrew Markebo)
Date: Wed, 18 May 2005 15:00:10 GMT
Subject: Debugging from within emacs!
Message-ID: <m3sm0koa01.fsf@flognat.dyndns.org>

Argh..

How do I debug my python-code from the inside of emacs, throw some
breakpoints? and fire up the session, check backtraces and so on?

             /Andy

Experimenting I have come this far: 

I have put a pdb.bat in my path, containing:
"c:\Program Files\Python23\python.exe" -u "c:\Program Files\Python23\Lib\pdb.py" %1 %2 %3 %4 %5 %6 %7 %8 %9

In emacs I do M-x pdb <enter> <enter>, I get the 

Current directory is h:/WorkingWith/PyLabView/
h:\WorkingWith\PyLabView>"c:\Program Files\Python23\python.exe" -u "c:\Program Files\Python23\Lib\pdb.py" PyLVcomms.py         
> <string>(1)?()
(Pdb) 

Whatever I try to do now, like doing a step, I get

(Pdb) step
--Call--

and nothing happens.. restart, doing a "n"
(pdb) n

twenty;20;abc;3;abc
{'twenty': ('int', 20), 'abc': ('string', 'abc')}

--Return--
> <string>(1)?()->None
(pdb)


-- 
 "I [..] am rarely happier than when spending an entire day programming
my computer to perform automatically a task that it would otherwise
take me a good ten seconds to do by hand."
			        -- Douglas Adams, "Last Chance to See"
					 -= May he rest in peace! =-


From martijn at gamecreators.nl  Mon May  9 11:28:26 2005
From: martijn at gamecreators.nl (martijn at gamecreators.nl)
Date: 9 May 2005 08:28:26 -0700
Subject: include "apythonscript.py"
In-Reply-To: <1115651334.811250.60520@o13g2000cwo.googlegroups.com>
References: <1115648730.390588.158760@z14g2000cwz.googlegroups.com>
	<1115651334.811250.60520@o13g2000cwo.googlegroups.com>
Message-ID: <1115652506.460144.173870@o13g2000cwo.googlegroups.com>

Ah damn , that's the way.

And what if you have a very big class and want to include some class
functions ?

class ThisIsAClass:
    def __init__(self):

     Here I want to import a class def



From andrewm at object-craft.com.au  Tue May 31 03:40:50 2005
From: andrewm at object-craft.com.au (Andrew McNamara)
Date: Tue, 31 May 2005 17:40:50 +1000
Subject: Albatross 1.30 released
Message-ID: <20050531074050.B44F57940DC@longblack.object-craft.com.au>


OVERVIEW

Albatross is a small toolkit for developing highly stateful web
applications.

The toolkit has been designed to take a lot of the pain out of
constructing intranet applications although you can also use Albatross
for deploying publicly accessed web applications.

In slightly more than 4500 lines of Python (according to pycount) you
get the following:

  * An extensible HTML templating system similar to DTML including tags for:
    - Conditional processing.
    - Macro definition and expansion.
    - Sequence iteration and pagination.
    - Tree browsing.
    - Lookup tables to translate Python values to arbitrary template
      text.

  * Application classes which offer the following features:
    - Optional server side or browser side sessions.
    - The ability to place Python code for each page in a dynamically
      loaded module, or to place all page processing code in a single
      mainline.

  * The ability to deploy applications as CGI, FastCGI, mod_python or
    a pure python HTTP server by changing less than 10 lines of code.

The toolkit application functionality is defined by a collection of
fine grained mixin classes.  Nine different application types and six
different execution contexts are prepackaged, you are able to define
your own drop in replacements for any of the mixins to alter any
aspect of the toolkit semantics.

Application deployment is controlled by your choice of either cgi,
FastCGI, mod_python, or BaseHTTPServer Request class.  It should be
possible to develop a Request class for Medusa or Twisted to allow
applications to be deployed on those platforms with minimal changes.

Albatross comes with over 170 pages of documentation.  HTML, PDF and
PostScript formatted documentation is available from the toolkit
homepage.

The toolkit homepage:

        http://www.object-craft.com.au/projects/albatross/

The Albatross mailing list subscription and archives:

	http://object-craft.com.au/cgi-bin/mailman/listinfo/albatross-users

CHANGES SINCE 1.20

  * Any HTML tag can now be prefixed with "al-" allowing any attribute to be
    the result of python evaluation. For example:

      <al-td colspanexpr="i.span()"> could produce <td colspan="3">

    and:

      <al-input name="abc.value" disabledbool="abc.isdisabled()">
      could produce <input name="abc.value" disabled>

  * Since macros and lookups are an application global resource, they can
    only be defined once per application, however this was not previously
    checked. Redefinition of macros or lookups will now result in an
    ApplicationError exception.

  * an in-line version of the <al-lookup> tag has been introduced, which is
    expanded in place if the tag has an expr= attribute.

  * a new <al-require> tag has been added to allow templates to assert that
    specific Albatross features are available, or templating scheme version
    number is high enough.

  * "Cache-Control: no-cache" is now set in addition to "Pragma: no-cache"
    - the former is defined for HTTP/1.1, the later for HTTP/1.0.

  * Simplified session cookie handling.

BUGFIXES SINCE 1.20:

  * FastCGI apps were not being explicitly finalised, relying
    instead on their object destructor, with the result that writing
    application output (or errors) would be indefinitely deferred if
    object cycles existed. We now call "fcgi.Finish()" from the fcgiapp
    Request.return_code() method.

  * When handling exceptions, the traceback is now explicitly deleted
    from the local namespace to prevent cycles (otherwise the garbage
    collection of other objects in the local namespace will be delayed).

  * Two fixes to the <al-select> tag: the albatross-specific "list"
    attribute was leaking into resulting markup, and the use of the "expr"
    attribute would result in invalid markup being emitted.

  * Thanks to Robert Fendt for picking this up: the Albatross-generated
    hidden field input element must not appear naked inside a form
    element for strict HTML conformance.  The solution is to wrap the
    input elements in div.

  * BranchingSession sessions could not be "deleted" - the solution is
    to add a dummy "session" shared by all branches, which is deleted
    when one branch "logs out".

-- 
Andrew McNamara, Senior Developer, Object Craft
http://www.object-craft.com.au/


From ken.miller at entouch.net  Tue May 10 21:45:56 2005
From: ken.miller at entouch.net (Kenneth Miller)
Date: Tue, 10 May 2005 20:45:56 -0500
Subject: Python Graphing Utilities.
References: <-dadnS0X7IVccR3fRVn-uQ@entouch.net>
	<mailman.319.1115770687.29826.python-list@python.org>
Message-ID: <74GdnUgFNZNK_hzfRVn-3Q@entouch.net>

Unix, not windows ><
"Ron Adam" <rrr at ronadam.com> wrote in message
news:mailman.319.1115770687.29826.python-list at python.org...
> Kenneth Miller wrote:
>
> > Hello All,
> >
> >     I am new to Python and i was wondering what graphing utlities would
be
> > available to me. I have already tried BLT and after weeks of unsuccesful
> > installs i'd like to find something else. Anything someone would
recommend?
> >
> > Regards,
> > Ken
>
>
> BLT doesn't install in the correct directories on Windows. I found this
> helpful.
>
>     1.  Install BLT 2.4u into C:/Python23/tcl, using BLT's installer
> (the one for Tcl/Tk 8.3). This gives you bin, include, and lib
> subdirectories of C:/Python23/tcl, with all the BLT stuff in them.
>     2. Copy C:/Python23/tcl/lib/blt2.4 into C:/Python23/tcl/tcl8.3.
>     3. Put the BLT DLLs in a directory on your PATH (not necessarily a
> system directory, it just has to be on your PATH)
>
> Clipped from: http://heim.ifi.uio.no/~hpl/scripting/software.html
>
>
> Cheers,
> _Ron
>
>
>
>
>
>
>




From kay.schluehr at gmx.net  Mon May  9 14:18:10 2005
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: 9 May 2005 11:18:10 -0700
Subject: __brace__ (PEP?)
In-Reply-To: <roy-99FD0B.09232109052005@reader1.panix.com>
References: <mailman.175.1115594947.29826.python-list@python.org>
	<roy-DE30BB.20151208052005@reader1.panix.com>
	<mailman.177.1115599072.29826.python-list@python.org>
	<roy-8C6C81.20480608052005@reader1.panix.com>
	<1115617678.841460.294970@z14g2000cwz.googlegroups.com>
	<roy-99FD0B.09232109052005@reader1.panix.com>
Message-ID: <1115662690.004315.163360@f14g2000cwb.googlegroups.com>

Roy Smith wrote:
> "Kay Schluehr" <kay.schluehr at gmx.net> wrote:
>
> > Roy Smith wrote:
> >
> > > foo->bar ==> foo.__arrrow__(bar)
> > > foo$bar ==> foo.__dollar__(bar)
> > > foo#bar ==> foo.__hash__(bar)
> > > foo::bar ==> foo.__scope__(bar)
> >
> > I'm strongly in favor for the arrow ( but with two "r" only ). The
> > question is simply: for what?
>
> I'm confused.  You're strongly in favor of a piece of punctuation
even
> though you don't have any idea what it might be used for?

Shurely I was joking. I could imagine a few purposes most likely arrows
of some category. That's what You depicted using the "==>" arrow, that
translates some infix operator expression into it's method description.
Arrows are some kind of 2-tuples that express a transition and which
are "left-exact" i.e. there must be at most a right value to some left
value.

Example:

(foo->bar) -> foo.__arrow__(bar)

This is a recursive definition of the arrow which could be further
expanded:

((foo->bar) -> foo.__arrow__(bar)) ->
foo.__arrow__(bar).__arrow__(foo.__arrow__(bar))

etc.

But something intrigues me and that is the prevalence of "foo" above
"bar" i.e. the preimage above the image. I would like to see that one
starts with the binary relation as the primary concept. A relation
should be instantiated by two classes. Let be Rel(A,B) some relation
created from classes A and B. The instances of Rel(A,B) would be arrows
from A to B depicted as arrow diagrams:

   foo->bar -> rel.__arrow__(foo,bar)

There is no absolute meaning of the arrow foo->bar, because it reflects
only the particular relation instance rel.

Besides this I guess Guido wants to use the arrow in the context of
"optional static type declarations" for declaring the return type. I
don't like this optional static stuff but the arrow is playing a role
also in this proposal.

Ciao,
Kay



From stephane.bronsart at teledisnet.be  Tue May 10 14:04:02 2005
From: stephane.bronsart at teledisnet.be (StepH)
Date: Tue, 10 May 2005 20:04:02 +0200
Subject: Python 2.4 & BLT ?
Message-ID: <4280f791$0$344$4d4efb8e@read.news.be.uu.net>

Hi,

I'm not able to install BLT on my Python 2.4 (upgraded to 2.4.1) 
distibution...

I'v try to download btlz-for-8.3.exe, but when i try to install it, i've 
a msgbox saying to the file is corrupt...

Any idea ?

Thanks.

StepH.


From peter at engcorp.com  Sun May  8 14:14:16 2005
From: peter at engcorp.com (Peter Hansen)
Date: Sun, 08 May 2005 14:14:16 -0400
Subject: pyvm -- faster python
In-Reply-To: <1115561483.741761.212140@f14g2000cwb.googlegroups.com>
References: <mailman.164.1115548611.29826.python-list@python.org>
	<1115561483.741761.212140@f14g2000cwb.googlegroups.com>
Message-ID: <zNSdnccAUsmKyuPfRVn-tg@powergate.ca>

Kay Schluehr wrote:
> Stelios Xanthakis wrote:
>>pyvm is a program which can run python 2.4 bytecode (the .pyc files).
>>A demo pre-release is available at:
>>	http://students.ceid.upatras.gr/~sxanth/pyvm/
> 
> could You tell us a bit more about Your motivation to create an
> alternative C-Python interpreter? There is AFAIK no such ambitious
> project that has ever survived. ..

If you check the URL more closely, you'll notice that this is a 
university site.

It seem likely this being done at least partly as a school project, 
which is certainly motivation enough for such a thing, *even* if it 
doesn't survive (since it will pay for itself in learning).

-Peter


From ccurvey at gmail.com  Wed May 11 14:59:41 2005
From: ccurvey at gmail.com (Chris Curvey)
Date: 11 May 2005 11:59:41 -0700
Subject: win32com and ADO
In-Reply-To: <6Pidnf5ZQfVlzx_fRVn-pg@powergate.ca>
References: <1115833669.142021.294080@g44g2000cwa.googlegroups.com>
	<6Pidnf5ZQfVlzx_fRVn-pg@powergate.ca>
Message-ID: <1115837981.463733.117320@g43g2000cwa.googlegroups.com>

Thanks Peter.

I found the files that makepy generated (in
$PYTHON_HOME/Lib/site-packages/win32com/gen_py).  I've tried deleting
the individual files, and the entire directory, and I'm still getting
the error.  (Maybe something was changed in the registry?)

[Fun side note -- after deleting the files, I thought I would look in
them for the EOF, but they stubbornly refused to regenerate, giving an
error about "This file has already been processed".  The only way I
could regenerate the files was by deleting the win32com package via the
control panel and re-installing.]

In the generated files, I did find a reference to "EOF" (all caps) in
something called _prop_map_get_.  (I had tried a few different
variations on Eof, but none of them worked.)

At this point, the only way that I can get to the EOF property is to
force the dynamic dispatch by importing from com.win32.client.dynamic,
AND coding like this:

rs = Dispatch("ADODB.RecordSet")
rs.ActiveConnection = conn
rs.Open("select * from foo")
while not rs.EOF:
    doSomething()
    rs.MoveNext()

I hope someone can lend me a clue before I edit all of these query
instances...



From martin at v.loewis.de  Mon May 16 17:58:41 2005
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Mon, 16 May 2005 23:58:41 +0200
Subject: Extracting pickle from Python
In-Reply-To: <sj6ie.291$VB6.150@newssvr12.news.prodigy.com>
References: <sj6ie.291$VB6.150@newssvr12.news.prodigy.com>
Message-ID: <42891791$0$1827$9b622d9e@news.freenet.de>

Philippe C. Martin wrote:
> How would one go about extracting the pickle module from Python (ex: to make
> a .a or a .dll) ?

Pickle relies heavily on Python, so you most likely have to take the
rest of Python as well when trying to integrate pickle elsewhere?

Are you looking for pickle or cPickle? pickle.py is written in Python,
so you need a full Python interpreter to run it. cPickle is written
in C, so you could go away with less than a full interpreter, but
it still calls a lot of Python interpreter functions.

To integrate a Python interpreter, see the "Embedding and Extending"
manual, in particular the "embedding" part. Essentially, you need to
link with pythonxy.dll/libpythonxy.a.

If you want a Python-free implementation of pickle, you best rewrite
it yourself. The core of pickle is fairly easy. The tricky part is
the extensibility: During unpickling, arbitrary Python functions can
be invoked to reconstruct objects, and arbitrary classes can be
instantiated, so you need to emulate constructors for all types
that may be present in your pickle files.

Regards,
Martin


From rogerb at rogerbinns.com  Tue May 10 21:28:19 2005
From: rogerb at rogerbinns.com (Roger Binns)
Date: Tue, 10 May 2005 18:28:19 -0700
Subject: pyvm -- faster python
References: <mailman.164.1115548611.29826.python-list@python.org><1115561483.741761.212140@f14g2000cwb.googlegroups.com><m102l2-9qr.ln1@home.rogerbinns.com>
	<mailman.264.1115716603.29826.python-list@python.org>
Message-ID: <vu38l2-k5v.ln1@home.rogerbinns.com>

> I am not very interested on C compatibility.

That will rule out all the gui frameworks, SSL, cryptography
and numerous other packages.  Have a look at what happened to
Prothon.  What ultimately killed it was the problem of having
a decent library.  You don't have to make the C library
compatibility totally high performance, but having any form of
it there will make adoption by others easier.

Roger




From ssmith579 at aol.com  Fri May 27 15:17:08 2005
From: ssmith579 at aol.com (ssmith579 at aol.com)
Date: 27 May 2005 12:17:08 -0700
Subject: Get number of lines in file
Message-ID: <1117221428.788567.10060@f14g2000cwb.googlegroups.com>

I have read in a file and need to get the number of lines.

    cpn_file = open('Central Part number list.txt')
    cpn_version = cpn_file.read().split('\n')

I want to know the number of elements in cpn_version.



From domma at procoders.net  Fri May 20 03:36:11 2005
From: domma at procoders.net (Achim Domma (Procoders))
Date: Fri, 20 May 2005 09:36:11 +0200
Subject: MySQLdb and Unicode
Message-ID: <d6k415$ivu$01$1@news.t-online.com>

Hi,

I try to write unicode strings to a MySQL database via MySQLdb. 
According to the documentation I should pass 'utf-8' as keyword 
parameter to the connect method. But then I get the following error:


Traceback (most recent call last):
   File "C:\develop\SyynX\unicode_test.py", line 7, in ?
     con=MySQLdb.connect(host='localhost',db='unicode_test',unicode='utf-8')
   File "C:\Python24\Lib\site-packages\MySQLdb\__init__.py", line 66, in 
Connect
     return Connection(*args, **kwargs)
   File "C:\Python24\Lib\site-packages\MySQLdb\connections.py", line 
134, in __init__
     super(Connection, self).__init__(*args, **kwargs2)
TypeError: 'unicode' is an invalid keyword argument for this function


I'm using version 1.2 of MySQLdb. Any hint what I'm doing wrong?

regards,
Achim


From mwm at mired.org  Fri May  6 00:09:41 2005
From: mwm at mired.org (Mike Meyer)
Date: Thu, 05 May 2005 23:09:41 -0500
Subject: So many things that need to be decided....
References: <G3Ade.1022$fF6.12717@news1.mts.net>
	<86sm1584l4.fsf@guru.mired.org>
	<zuMde.1076$fF6.14053@news1.mts.net>
	<mailman.108.1115135225.6583.python-list@python.org>
	<873bt1h3b6.fsf@localhost.localdomain>
Message-ID: <86zmv95722.fsf@guru.mired.org>

Nick Vargish <nav+posts at bandersnatch.org> writes:

> Mage <mage at mage.hu> writes:
>
>> - identing with tabs
>
> Indenting with tabs is pretty much frowned upon in Python, as Guido
> relates in PEP 8:
>
> http://www.python.org/peps/pep-0008.html
>
> I guess it doesn't matter much if you are the only person who will
> ever touch your code, and you never, ever, accidentally mix spaces and
> tabs...

What the OP probably meant was that the development environment
inserts the appropriate number of spaces when you hit the tab key. I'd
hate to work on Python - or in any group development environment -
where that wasn't the case.

            <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From brian at mirror.org  Sun May  8 15:38:30 2005
From: brian at mirror.org (brian at mirror.org)
Date: 8 May 2005 12:38:30 -0700
Subject: py2exe and library.zip
In-Reply-To: <mailman.150.1115203584.6583.python-list@python.org>
References: <mailman.76.1115095357.6583.python-list@python.org>
	<5uadnUTTqv6Iw-rfRVn-qw@powergate.ca>
	<4277EF15.2030605@open-networks.net>
	<8c7f10c6050504032010d9920@mail.gmail.com>
	<4278A377.3000504@open-networks.net>
	<8c7f10c605050403363c34f97c@mail.gmail.com>
	<mailman.150.1115203584.6583.python-list@python.org>
Message-ID: <1115581109.965038.154880@z14g2000cwz.googlegroups.com>

>
> >The zip file essentially contains the whole system in on lump.
Change
> >the system, and naturally your users will have to download the whole
> >lump again. [...]
> >
> but if it was just a dir, when they update from the svn at log in,
all
> they do is download the extra\changed files. much much quicker then
> downloading a 4 meg uncompressed zip file.

Not clear what you are really asking for, but maybe this will help.  I
have a application that is 95% normal code, packaged up via py2exe.
Other 5% is a few .py files in a separate directory, modified regularly
by the users (report specifications in some lists/dicts).  These files
are *excluded* from the py2exe build, and I manually add this directory
to sys.path during the application startup.  A change to one of the
spec files is picked up like any normal python session, and I don't
need to rebuild the entire app.  Could you do the same type of thing?

Brian.



From greg.steffensen at gmail.com  Sun May 29 17:23:21 2005
From: greg.steffensen at gmail.com (gsteff)
Date: 29 May 2005 14:23:21 -0700
Subject: Process monitoring
In-Reply-To: <mailman.263.1116624267.8733.python-list@python.org>
References: <1116543944.348711.11910@g43g2000cwa.googlegroups.com>
	<mailman.263.1116624267.8733.python-list@python.org>
Message-ID: <1117401801.340936.20350@f14g2000cwb.googlegroups.com>

Thanks- subprocess was exactly what I needed.  For anyone else that
reads this, I just launched a new subprocess via subprocess.Popen, did
what I needed to do in a while look, while calling the poll method of
the Popen object to check whether it was finished, and if so, what its
error code was.  Pretty simple.



From pdemb at gazeta.pl  Thu May 12 15:06:31 2005
From: pdemb at gazeta.pl (Peter Dembinski)
Date: Thu, 12 May 2005 21:06:31 +0200
Subject: Python features
References: <1115536911.106882.166230@z14g2000cwz.googlegroups.com>
	<mailman.162.1115539371.29826.python-list@python.org>
Message-ID: <op.sqofc51np2c5o9@hector.domek>

On Sun, 08 May 2005 10:02:42 +0200, Andr? Roberge  
<andre.roberge at gmail.com> wrote:

[...]

> google for "python" and "functional"; first link:
> http://www-106.ibm.com/developerworks/linux/library/l-prog.html

[...]

> Imperative programming languages are the most commonly used languages.  
> Examples of this type of language are C, C++, Ada, Fortran, Algol, Java,  
> Python, Perl, and so on.

How about lambda construction?  Isn't Python imperative language that
includes some functional mixins?

I mean -- can you say Python is fully imperative language?

If you want to redirect me to Google, don't bother.  IMO ninety percent
of writings found on WWW is just a garbage.

-- 
http://www.peter.dembinski.prv.pl


From kent37 at tds.net  Thu May 26 16:37:28 2005
From: kent37 at tds.net (Kent Johnson)
Date: Thu, 26 May 2005 16:37:28 -0400
Subject: Access from one class to methode of other class
In-Reply-To: <3fmd51F8j4sfU1@news.dfncis.de>
References: <3flu22F8g4u4U1@news.dfncis.de>
	<fesb91tvpjs5kl4dm02k8puu08ln35gtfl@4ax.com>
	<3fmd51F8j4sfU1@news.dfncis.de>
Message-ID: <42963377$1_2@newspeer2.tds.net>

VK wrote:
>> On Thu, 26 May 2005 14:33:45 +0200, VK <"myname"@example.invalid>
>> declaimed the following in comp.lang.python:
>>
>>
>>> Hi, all!
>>>
>>> In my programm i have to insert a variable from class 2 to class 1 
>>> and I get error NameError: global name 'd' is not defined. How do I 
>>> get access to d.entry.insert() method of class 1

> 
> from Tkinter import *
> 
> class First:
>         def __init__(self):
>             self.root = Tk()  # create window contents as children to 
> root..
>             self.entryframe = Frame(self.root)
>             self.entryframe.pack(fill=BOTH,expand=1)
> 
>             self.entry = Entry(self.entryframe)
>             self.entry.pack(side=TOP,expand=1,fill=BOTH)
>             self.entry.focus()
>             self.entry.bind('<Return>',(lambda event: self.fetch())) # 
> on enter key
> 
>             self.button = 
> Button(self.entryframe,text="Call",command=self.getvar)
>             self.button.pack(side=LEFT,expand=YES,fill=BOTH)
> 
>             self.root.mainloop()
> 
>         def fetch(self):
>             print 'Input => "%s"' % self.entry.get() # get text form entry
> 
>         def getvar(self,event=0):
>             c=Second(self,self.root)
> 
> 
> 
> class Second:
>     def __init__(self,parent,s="thing"):
>         self.root = Tk()
>         self.ent = Entry(self.root)
>         self.ent.pack()
>         self.btn = Button(self.root,text='Fetch',command=self.fetch)
>         self.btn.pack(side=RIGHT)
>     def fetch(self):
>             text = self.ent.get() # get text form entry in this window
>             d.entry.insert(0, text)# must insert in other window
> 
> d = First() #First window

The problem is that First.__init__() never returns so the instance of First is never bound to d. 
Take the line
   self.root.mainloop()
out of First.__init__() and and the line
d.root.mainloop()

at the end of the program and it will work as you expect.

Kent


From enleverlesO.OmcO at OmclaveauO.com  Mon May 23 16:35:04 2005
From: enleverlesO.OmcO at OmclaveauO.com (Do Re Mi chel La Si Do)
Date: Mon, 23 May 2005 22:35:04 +0200
Subject: no win32com.client
References: <1116878775.133106.240430@z14g2000cwz.googlegroups.com>
	<1116879334.341631.245570@z14g2000cwz.googlegroups.com>
Message-ID: <42923f1e$0$11688$8fcfb975@news.wanadoo.fr>

Hi !

    Or : http://sourceforge.net/project/showfiles.php?group_id=78018

@-salutations
-- 
Michel Claveau 




From geon at post.cz  Sat May 28 12:21:46 2005
From: geon at post.cz (pavel.kosina)
Date: Sat, 28 May 2005 18:21:46 +0200
Subject: Tkinter slowes down
In-Reply-To: <mailman.212.1117287190.18027.python-list@python.org>
References: <d79a1v$15j4$1@ns.felk.cvut.cz>
	<mailman.212.1117287190.18027.python-list@python.org>
Message-ID: <d7a5pr$1lc0$1@ns.felk.cvut.cz>

Fredrik Lundh napsal(a):
> when you add an item to the canvas, it's part of the canvas
> until you remove it.  if performance drops, it's usually because
> you keep adding new items without removing the old ones.
> 
> try adding a w.delete(ALL) call before you "repaint".
> 

In the meantime I found that widget.destroy() works well, too (before 
"repainting").

Thanks  a lot

-- 
geon
Vyj?mka je pravidlo. Rekurzivn?.


From apardon at forel.vub.ac.be  Mon May 23 05:33:31 2005
From: apardon at forel.vub.ac.be (Antoon Pardon)
Date: 23 May 2005 09:33:31 GMT
Subject: Is Python suitable for a huge, enterprise size app?
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>
	<1116432325.497438.64580@g49g2000cwa.googlegroups.com>
	<1116433218.495131.71260@g49g2000cwa.googlegroups.com>
	<1116440427.255902.36260@g49g2000cwa.googlegroups.com>
	<mailman.194.1116489874.8733.python-list@python.org>
	<x7wtptmzkl.fsf@handshake.de>
Message-ID: <slrnd938ra.ik7.apardon@rcpc42.vub.ac.be>

Op 2005-05-20, Dieter Maurer schreef <dieter at handshake.de>:
> "Fredrik Lundh" <fredrik at pythonware.com> writes on Thu, 19 May 2005 09:54:15 +0200:
>> ...
>> and unless your operating system is totally braindead, and thus completely unfit
>> to run huge enterprise size applications, that doesn't really matter much.  leaks
>> are problematic, large peak memory use isn't.
>
> Could you elaborate a bit?
>
> Large peak memory use means that the application got a large
> address space. What garantees that the residual memory use
> (after the peak) is compact and not evenly spread across
> the address space.

Well nothing. But how do you want to return memory back
to the O.S. when the residual memory use isn't compact
and evenly spread across the address space?

-- 
Antoon Pardon


From slayer.bbs at bbs.wretch.cc  Thu May  5 02:27:14 2005
From: slayer.bbs at bbs.wretch.cc (slayer)
Date: 05 May 2005 06:27:14 GMT
Subject: [newbie] how to look up functions
Message-ID: <4I4S42$89a@bbs.wretch.cc>

Hi all,
 I am a python newbie. I need some help to loop up about API, or reference.
If any web that Java API Document, I will try it. Is there some one like it
or other ways?
--
?????????????????????????????????????
?????BBS telnet://bbs.wretch.cc ????  ?? ???????????
?????????????????????????????????????
?????????????????????????????????????
?????????????????????? pc210-59-94-118.nutn.edu.tw?


From beyer at imb-jena.de  Thu May 19 16:19:41 2005
From: beyer at imb-jena.de (Andreas Beyer)
Date: Thu, 19 May 2005 13:19:41 -0700
Subject: NaN support etc.
Message-ID: <428CF4DD.8090108@imb-jena.de>

/S?bastien Boisg?rault wrote:/

> But, practically, I have never found a platform where
> the following fpconst-like code did not work:
>
> import struct
> cast = struct.pack
>
> big_endian = cast('i',1)[0] != '\x01'
> if big_endian:
>    nan = cast('d', '\x7F\xF8\x00\x00\x00\x00\x00\x00')[0]
> else:
>    nan = cast('d', '\x00\x00\x00\x00\x00\x00\xf8\xff')[0]

Exactly this code doesn't work. When executing it I get the error message:

Traceback (most recent call last):
  File "float_tools.py", line 8, in ?
    nan = cast('d', '\x00\x00\x00\x00\x00\x00\xf8\xff')[0]
error: required argument is not a float

Maybe the second line should read:
cast = struct.unpack

However, the actual fpconst.py works fine.

Thanks for the hints,
   Andreas



From danb_83 at yahoo.com  Thu May 19 17:14:38 2005
From: danb_83 at yahoo.com (Dan Bishop)
Date: 19 May 2005 14:14:38 -0700
Subject: Byte-operations.
References: <mailman.183.1116469357.8733.python-list@python.org>
Message-ID: <1116537278.532342.232080@o13g2000cwo.googlegroups.com>

Dave Rose wrote:
> I hope someone can please help me.  A few months ago, I found a VBS
file,
> MonitorEDID.vbs on the internet.
...[snip]...
> Anyway, the functions from VBS I don't know how to translate to
Python are:
>
> #        location(0)=mid(oRawEDID(i),0x36+1,18)
> #        location(1)=mid(oRawEDID(i),0x48+1,18)

IIRC, the BASIC mid$ function is mid(string, start, length), where the
starting index is 1-based.  The Python equivalent is
string[start-1:start-1+length], so these two lines would convert to

   location = [oRawEDID(i)[54:72], oRawEDID(i)[72:90]]

> #        #you can tell if the location contains a serial number if it
starts
> with 0x00 00 00 ff
> #        strSerFind=chr(0x00) & chr(0x00) & chr(0x00) & chr(0xff)

The "chr" function is the same in Python as in VB.  But unlike VB, you
can use literals for special characters.

   strSerFind = '\x00\x00\x00\xFF'

...[snip]...
> #                tmpver=chr(48+tmpEDIDMajorVer) & "." &
chr(48+tmpEDIDRev)

In python, the string concatenation operator is "+" instead of "&".
However, this line can be written more concisely as:

   tmpver = "%c.%c" % (48 + tmpEDIDMajorVer, 48 + tmpEDIDRev)

But for single-digit integers, chr(48+n) is just an obscure way of
writing str(n), so what it really means is:

   tmpver = "%s.%s" % (tmpEDIDMajorVer, tmpEDIDRev)

> #            if (Byte1 and 16) > 0:
> #                Char1=Char1+4

VB's "and" operator is a bitwise operator; the "if" statement is
testing whether bit 4 is set in Byte1.  The Python equivalent is

   if Byte1 & 0x10:
      Char1 += 4



From fredrik at pythonware.com  Wed May 25 03:18:11 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Wed, 25 May 2005 09:18:11 +0200
Subject: Tkinter Text Question
References: <200505241547.49091.jstroud@mbi.ucla.edu>
Message-ID: <d718o7$hsd$1@sea.gmane.org>

James Stroud wrote:

> I would like to get the index of the character closest to the pointer in a
> Text, something like Canvas.find_closest(). I want it to bind to '<Motion>'.
> Does anybody know how this might be done?

use w.index("@x,y" % (event.x, event.y)) to find the character "under" the
pointer, and, if necessary, use w.bbox() and/or w.dlineinfo() on neighbouring
characters/lines to find the "closest" (depending on your definition of closest).

</F> 





From prabapython at yahoo.co.in  Wed May  4 07:16:33 2005
From: prabapython at yahoo.co.in (praba kar)
Date: Wed, 4 May 2005 12:16:33 +0100 (BST)
Subject: Difference between Python CGI applications and Php applications
In-Reply-To: 6667
Message-ID: <20050504111633.4434.qmail@web8401.mail.in.yahoo.com>


Dear all,

       I have a project that is conversion
of Php Web applications into Python cgi
applications.  In my mind compare python-cgi
php is better.  But I want to know clearly.
which one is better. so kindly show me the 
advantages of python-cgi compare to Php


regards
PRaba

________________________________________________________________________
Yahoo! India Matrimony: Find your life partner online
Go to: http://yahoo.shaadi.com/india-matrimony


From tjreedy at udel.edu  Wed May 11 22:48:31 2005
From: tjreedy at udel.edu (Terry Reedy)
Date: Wed, 11 May 2005 22:48:31 -0400
Subject: Solipsis: Python-powered Metaverse
References: <d5qqo7$3dc$1@sea.gmane.org><4280F03E.2070903@kzoo.edu>	<mailman.323.1115778422.29826.python-list@python.org><du7u0lacnam.fsf@mozart.cc.tut.fi>
	<428220D2.5070701@ulmcnett.com>
Message-ID: <d5ufnh$53u$1@sea.gmane.org>


"Paul McNett" <p at ulmcnett.com> wrote in message 
news:428220D2.5070701 at ulmcnett.com...
> Sure, that's how it is here in the US too. You have a modem/router
> supplied by the cable or DSL company that provides DHCP and NAT for
> outbound traffic.

Comcast supplied me with a DHCP cable modem that comverts whatever the 
cable uses for transport to standard ethernet signals.  I supplied the 
4-port NAT ethernet router which seems to block at least some uninvited 
inbound traffic.

>  and what if both computers
> wanted to participate on the port 6000 fun?

Recently, I had one family member use my purchased account to logon to and 
play an online action game, which sends a constant stream of update info. 
Then, curious what would happen, I logged on, from a different computer but 
through the same router, with a temporary guest account.  Somewhat to my 
surprise, it worked -- without touching the computer (XP) or router 
settings.  And kept working the whole weekend.  So there is a way to tag 
update packets so they can be reliably separated into two streams (and vice 
versa).  Solipsis should be able to do the same.

Terry J. Reedy





From efoda5446 at yahoo.com  Wed May 18 22:49:12 2005
From: efoda5446 at yahoo.com (Lorn)
Date: 18 May 2005 19:49:12 -0700
Subject: Extracting multiple zip files in a directory
In-Reply-To: <5vtn81h8qt9mk73etq0r3e02uqsdjf5jo1@4ax.com>
References: <1116462658.723097.134390@g43g2000cwa.googlegroups.com>
	<5vtn81h8qt9mk73etq0r3e02uqsdjf5jo1@4ax.com>
Message-ID: <1116470952.173588.200990@o13g2000cwo.googlegroups.com>

Thanks John, this works great!

Was wondering what your reasoning is behind replacing "filter" with the
x for x statement?

Appreciate the help, thanks again.

Lorn



From python-url at phaseit.net  Tue May  3 12:08:03 2005
From: python-url at phaseit.net (Simon Brunning)
Date: Tue, 03 May 2005 16:08:03 GMT
Subject: Dr. Dobb's Python-URL! - weekly Python news and links (May  3)
Message-ID: <d585c0$6e9$1@lairds.us>

QOTW: "The security 'droids have decided that since the MS Office Suite is a
'standard' application then software written in MS Office VBA must be 'safe.'
Any other development environments (such as Java, Perl, Cygwin) are 'unsafe'
and can't be installed." - Peter Olsen

"There's nothing wrong with open source projects catering to a market, and
there's nothing wrong with running open source software on a proprietary
operating system." - Steve Holden

        
    Efficiently running a regex over a large file:
        http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/6a91f75b5bef1d0d
        
    Readable switch construction without lambdas or dictionaries:
        http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/410692
        
    Lexical Analysis, Python-style:
        http://jason.diamond.name/weblog/2005/04/26/lexical-analysis-python-style

    What happened at Python UK:
        http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/72446ebe0271f3cf
        http://www.reportlab.org/~andy/accu2005/accu2005.html
        
    Europython 2005:
        http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/3ac8419954f9094a
        
    PyCon Brasil is a success!
        http://www.livejournal.com/users/gniemeyer/

    Using the logging module:
        http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/412552
        
    Sparklines in data: URIs:
        http://bitworking.org/news/Sparklines_in_data_URIs_in_Python
        
    Static typing is a sleeping policeman:
        http://www.itworld.com/AppDev/nls_ebiznaked050426/
        
    Got some free time? The Python Challenge will fix that:
        http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/7a755219ea1a5cec
        
    Let Python be Python:
        http://www.unixreview.com/documents/s=9700/ur0504k/

    Yet another Python code sharing site:
        http://www.pycode.com/
        
    Notable releases:
        ID3Writer
            http://www.comfortableshoe.co.uk/cgi-bin/blosxom.cgi/Home/Python/id3Writer.comments
        Snakelets 1.40
            http://snakelets.sourceforge.net/
        Roundup 0.8.3
            http://roundup.sourceforge.net/
        wxPython 2.6.0.0
            http://wxpython.org/
        PyDev 0.9.3
            http://pydev.sourceforge.net/
        PythonCAD 24
            http://www.pythoncad.org/


========================================================================
Everything Python-related you want is probably one or two clicks away in
these pages:

    Python.org's Python Language Website is the traditional
    center of Pythonia
        http://www.python.org
    Notice especially the master FAQ
        http://www.python.org/doc/FAQ.html

    PythonWare complements the digest you're reading with the
    marvelous daily python url
         http://www.pythonware.com/daily  
    Mygale is a news-gathering webcrawler that specializes in (new)
    World-Wide Web articles related to Python.
         http://www.awaretek.com/nowak/mygale.html 
    While cosmetically similar, Mygale and the Daily Python-URL
    are utterly different in their technologies and generally in
    their results.

    For far, FAR more Python reading than any one mind should
    absorb, much of it quite interesting, several pages index
    much of the universe of Pybloggers.
	http://lowlife.jp/cgi-bin/moin.cgi/PythonProgrammersWeblog
        http://www.planetpython.org/
        http://mechanicalcat.net/pyblagg.html

    comp.lang.python.announce announces new Python software.  Be
    sure to scan this newsgroup weekly.
        http://groups.google.com/groups?oi=djq&as_ugroup=comp.lang.python.announce

    Steve Bethard, Tim Lesher, and Tony Meyer continue the marvelous
    tradition early borne by Andrew Kuchling, Michael Hudson and Brett
    Cannon of intelligently summarizing action on the python-dev mailing
    list once every other week.
	http://www.python.org/dev/summary/

    The Python Package Index catalogues packages.
        http://www.python.org/pypi/

    The somewhat older Vaults of Parnassus ambitiously collects references
    to all sorts of Python resources.
        http://www.vex.net/~x/parnassus/   

    Much of Python's real work takes place on Special-Interest Group
    mailing lists
        http://www.python.org/sigs/

    The Python Business Forum "further[s] the interests of companies
    that base their business on ... Python."
	http://www.python-in-business.org

    Python Success Stories--from air-traffic control to on-line
    match-making--can inspire you or decision-makers to whom you're
    subject with a vision of what the language makes practical.
        http://www.pythonology.com/success

    The Python Software Foundation (PSF) has replaced the Python
    Consortium as an independent nexus of activity.  It has official
    responsibility for Python's development and maintenance. 
        http://www.python.org/psf/
    Among the ways you can support PSF is with a donation.
        http://www.python.org/psf/donate.html

    Kurt B. Kaiser publishes a weekly report on faults and patches.
        http://www.google.com/groups?as_usubject=weekly%20python%20patch
       
    Cetus collects Python hyperlinks.
        http://www.cetus-links.org/oo_python.html

    Python FAQTS
        http://python.faqts.com/

    The Cookbook is a collaborative effort to capture useful and
    interesting recipes.
	http://aspn.activestate.com/ASPN/Cookbook/Python

    Among several Python-oriented RSS/RDF feeds available are
	http://www.python.org/channews.rdf
	http://bootleg-rss.g-blog.net/pythonware_com_daily.pcgi
	http://python.de/backend.php
    For more, see
	http://www.syndic8.com/feedlist.php?ShowMatch=python&ShowStatus=all
    The old Python "To-Do List" now lives principally in a
    SourceForge reincarnation.
        http://sourceforge.net/tracker/?atid=355470&group_id=5470&func=browse
        http://python.sourceforge.net/peps/pep-0042.html
     
    The online Python Journal is posted at pythonjournal.cognizor.com.
    editor at pythonjournal.com and editor at pythonjournal.cognizor.com
    welcome submission of material that helps people's understanding
    of Python use, and offer Web presentation of your work.

    del.icio.us presents an intriguing approach to reference commentary.
    It already aggregates quite a bit of Python intelligence.
        http://del.icio.us/tag/python

    *Py: the Journal of the Python Language*
        http://www.pyzine.com

    Archive probing tricks of the trade:
        http://groups.google.com/groups?oi=djq&as_ugroup=comp.lang.python&num=100
        http://groups.google.com/groups?meta=site%3Dgroups%26group%3Dcomp.lang.python.*

Previous - (U)se the (R)esource, (L)uke! - messages are listed here:
  http://www.ddj.com/topics/pythonurl/ (requires subscription)
  http://groups-beta.google.com/groups?q=python-url+group:comp.lang.python*&start=0&scoring=d&
  http://purl.org/thecliff/python/url.html (dormant)
or
  http://groups.google.com/groups?oi=djq&as_q=+Python-URL!&as_ugroup=comp.lang.python


Suggestions/corrections for next week's posting are always welcome.
E-mail to <Python-URL at phaseit.net> should get through.

To receive a new issue of this posting in e-mail each Monday morning
(approximately), ask <claird at phaseit.net> to subscribe.  Mention
"Python-URL!".


-- The Python-URL! Team--

Dr. Dobb's Journal (http://www.ddj.com) is pleased to participate in and
sponsor the "Python-URL!" project.




From gtcopeland2002 at yahoo.com  Fri May  6 14:15:12 2005
From: gtcopeland2002 at yahoo.com (Greg Copeland)
Date: 6 May 2005 11:15:12 -0700
Subject: inheritance with new-style classes - help
In-Reply-To: <1115402296.414753.324000@f14g2000cwb.googlegroups.com>
References: <1115402296.414753.324000@f14g2000cwb.googlegroups.com>
Message-ID: <1115403312.031793.204560@f14g2000cwb.googlegroups.com>

Doh!  Child's __init__ was declared as __init().  Fixing that took care
of it!  Sorry for wasting the bandwidth!

Cheers,

Greg



From a-steinhoff at web.de  Tue May 17 10:04:14 2005
From: a-steinhoff at web.de (Armin Steinhoff)
Date: Tue, 17 May 2005 16:04:14 +0200
Subject: PyXML/expat  and the empty elements
In-Reply-To: <d6csc0$8an$01$1@news.t-online.com>
References: <d6csc0$8an$01$1@news.t-online.com>
Message-ID: <d6cti8$8b8$05$1@news.t-online.com>

Armin Steinhoff wrote:
> 
> 
> Hi all,
> 
> is it possible to get the name of an empty element specified
> by <element/> ... the expat parser seems only to recognize
> the <element></element> form
> 
> Regards
> 
>   Armin


Ok ... found the root of the problem. The expat parser is OK :)

Regards

     Armin


From anthra.norell at tiscalinet.ch  Fri May  6 06:58:23 2005
From: anthra.norell at tiscalinet.ch (Anthra Norell)
Date: Fri, 6 May 2005 12:58:23 +0200
Subject: Setting the corner color in rotated PIL images
References: <Xns96494A613BC4Fjreeder@63.223.7.253><mailman.91.1115117893.6583.python-list@python.org>
	<Xns964B90C911676jreeder@63.223.7.253>
Message-ID: <052501c5522a$85e7eb40$0201a8c0@mcuf7>

What do you mean 'is required'? I tend to think that getting ahead with a
job is what is required. I don't sneer at work-arounds if they save time.

Frederic

A somewhat craftier solution, if still pretty hackish, would be to go
through your image pixel by pixel, look what color each one is (color =
image.getpixel (here)) and change the ones with the wrong color (if color ==
wrong_color: putpixel (here, right_color)).
      If the color of  the corners does not occur inside your picture, you
can go throught the entire image. Else you'd have to stop changing colors at
the first occurrence of a pixel that does not have the wrong color, coming
inward from each of the lateral edges. (Code below (untested)).
      If you have elements in your picture that not only have the same color
as the corners, but also run into them, then you might have to refine your
code further in order for the inner loop not stray into the image.

# Left edge
for y in range (image.size [1]):
   for x in range (image.size [0]):
      color = image.getpixel ((x,y))
      if color != WRONG_COLOR:
         break
      image.putpixel ((x,y), RIGHT_COLOR)

# Right edge
for y in range (image.size [1]):
   for x in range (image.size [0]-1), -1,  -1):
      color = image.getpixel ((x,y))
      if color != WRONG_COLOR:
         break
      image.putpixel ((x,y), RIGHT_COLOR)


----- Original Message -----
From: "rzed" <jello at comics.com>
Newsgroups: comp.lang.python
To: <python-list at python.org>
Sent: Tuesday, May 03, 2005 8:13 PM
Subject: Re: Setting the corner color in rotated PIL images


> "Anthra Norell" <anthra.norell at tiscalinet.ch> wrote in
> news:mailman.91.1115117893.6583.python-list at python.org:
>
> [in response to:
> >> I'm using PIL to generate some images which may be rotated at
> >> the user's option. When they are rotated, the original image is
> >> cropped in the new image (which is fine), and the corners are
> >> black (which is not, in this case). I can't find any documented
> >> way to change the default fill color (if that's what it is) for
> >> the corners, and PIL also doesn't seem to support a flood fill.
> >> I have created a flood fill in Python, which works but which
> >> markedly slows image generation.]
>
> > I just had the same problem the other day. I solved it by
> > starting out with an image large enough to retain enough white
> > area following the rotation.
>
> Well, that's a workaround I could try, but I'm half-hearted about
> it. I don't like to think that it's *required*. Another possible
> solution is to make the outer portion black, so the rotation seems
> to do the right things, but in the cases I'm dealing with, that's
> either out or more trouble than it's worth. I can haul the rotated
> images into a paint program and manually touch up the corners, too,
> but I don't like to have to do that either.
>
> It seems strange that there wouldn't be some way to change the
> black to another color, or (maybe just as good) to transparent. PIL
> is so useful that it strikes me as an aberrant oversight. More
> likely, there *is* a better way, but I just don't know it and can't
> find it in the docs.
>
> --
> rzed
>
> --
> http://mail.python.org/mailman/listinfo/python-list



From phillip.watts at anvilcom.com  Wed May  4 12:04:10 2005
From: phillip.watts at anvilcom.com (phil)
Date: Wed, 04 May 2005 11:04:10 -0500
Subject: Read / Write image file REC SEP
References: <mailman.634.1115148003.6582.python-list@python.org>	<mailman.125.1115151448.6583.python-list@python.org>	<1115208396.640095.155190@g14g2000cwa.googlegroups.com>
	<idudnYSgq7VqXeXfRVn-iA@powergate.ca>
Message-ID: <4278F27A.7000505@anvilcom.com>

>>
>>So what if the client sends 4 bytes, and then sends 8000 bytes?  WIll I
>>get the first 4 bytes as a separate msg so to speak?  Basically i want
>>to catch each message from the client as a whole.
>>

IF YOU WANT SEPARATE MESSAGES:
Modify the client to send an end of record, then:
On Server:


datasep = '<EOR>'           # or whatever you like
datal = []
seversocket.settimeout(5.0) # or 0(infinite) or something reasonable
while 1:
     try:
         data = serversocket.recv(BUFFERSIZE) # fails on timeout
         if not data: break
         datal.append(data)
     except: break

msglist = datal.split(datasep)   # a list of messages



From http  Thu May 19 20:01:11 2005
From: http (Paul Rubin)
Date: 19 May 2005 17:01:11 -0700
Subject: Twisted an several CPUs
References: <mailman.219.1116524003.8733.python-list@python.org>
Message-ID: <7xhdgy6a0o.fsf@ruckus.brouhaha.com>

Jp Calderone <exarkun at divmod.com> writes:
>   Distributing load across multiple machines scales better than
> distributing it over multiple CPUs in a single machine.  If you have
> serious scalability requirements, SMP is a minor step in the wrong
> direction (unless you're talking about something like 128-way SMP on
> a supercomputer :)

See PoSH:

  http://poshmodule.sourceforge.net/

The performance gain from multiple CPU's and shared memory is quite real.
I've been wanting for quite a long time to hack up a web server that
uses this stuff.


From doodle4 at gmail.com  Thu May 12 15:19:15 2005
From: doodle4 at gmail.com (ashtonn@gmail.com)
Date: 12 May 2005 12:19:15 -0700
Subject: increment bits
Message-ID: <1115925555.287850.308390@z14g2000cwz.googlegroups.com>

Hello,

How do i manipulate arrays to increment 8 bits at a time.

I need to generate a pattern like
01,02,03,.....0xFF

Thanks,
-Ashton



From bokr at oz.net  Sat May  7 19:45:57 2005
From: bokr at oz.net (Bengt Richter)
Date: Sat, 07 May 2005 23:45:57 GMT
Subject: Newbie : checking semantics
References: <1115503520.392357.230620@f14g2000cwb.googlegroups.com>
Message-ID: <427d4e89.944376982@news.oz.net>

On 7 May 2005 15:05:20 -0700, "LDD" <loicderoyand at yahoo.fr> wrote:

>Hi everyone,
>
>I am new to python and was very enthustic about its possibilities when
>I discover that python is really what it is : just a scripting
>language.
Not "just." 
>
>What disappoints me is that pyton will happily accept and execute this
>code :
>
>if ( aConditionThatIsFalse ):
>     AFunctionThatIsntDefined()
>
>print "Hello world"
>
>The fact that python doesn't check if the symbol
>AFunctionThatIsntDefined is defined, is really bad when you develop big
>pieces of code. You will never be sure that your code is free of this
>kind of dummy errors and testing every possible execution paths is
>nightmarish !
If you aren't going to test your functions, how will you know they don't
have dummy errors??
>
>Is there a way to force Python to check the definition of symbol ?
>
If _are_ going to test your functions, how long will it take to discover that
a function doesn't exist?

IOW, do you mean that if you know a function is defined, you will assume
it is free of dummy errors? Such faith ;-)

Regards,
Bengt Richter


From tim.golden at viacom-outdoor.co.uk  Tue May 17 12:19:28 2005
From: tim.golden at viacom-outdoor.co.uk (Tim Golden)
Date: Tue, 17 May 2005 17:19:28 +0100
Subject: Problem listing services with wmi
Message-ID: <9A28C052FF32734DACB0A288A3533991EBB821@vogbs009.gb.vo.local>

[... snip results ...]

| So it would seem that the 3 methods give the same result. As to which 
| service it has gotten to when it gets to position 88 in the list, 
| obviously I can't find out with a script, and it seems that the list 
| isn't in any order I can see, so I couldn't even venture a 
| guess... I'll 
| try looking if there's a service in my list that isn't valid 
| (points to 
| an uninstalled program for example) or something like that... 
| But if you 
| have other ideas please let me know.

Well I honestly don't know if this will go any further,
but the following code uses the win32service module from
pywin32 to collect the service information, on the off-chance
that it *won't* fail where WMI does. I can't easily test it
since the script doesn't raise an error on my machine.

At the end, it tries to print out the differences between
the win32-collected info and the wmi-collected info.

<code>

#
# Not sure if you're running 2.3/2.4
#
try:
  set
except NameError:
  from sets import Set as set

##
## Taken from a post to c.l.py by William J. Rice
##
import win32service
import win32con

accessSCM = win32con.GENERIC_READ
hscm = win32service.OpenSCManager (None, None, accessSCM)

win32_names = set ()

for service_info in win32service.EnumServicesStatus(hscm):
  win32_names.add (service_info[1])

import win32com.client

c = win32com.client.GetObject (
  "winmgmts:{impersonationLevel=Impersonate,authenticationLevel=Default}/root/cimv2"
)

wmi_names = set ()
for service in c.ExecQuery ("SELECT * FROM Win32_Service"):
  try:
    short_name = service.Properties_ ("Caption").Value
  except:
    pass
  else:
    wmi_names.add (short_name)

print "only in win32:", ", ".join (win32_names - wmi_names)
print

print "only in wmi:", ", ".join (wmi_names - win32_names)
print

</code>

Let me know if anything shows up.

TJG

________________________________________________________________________
This e-mail has been scanned for all viruses by Star. The
service is powered by MessageLabs. For more information on a proactive
anti-virus service working around the clock, around the globe, visit:
http://www.star.net.uk
________________________________________________________________________


From mj at zopatista.com  Thu May  5 07:39:59 2005
From: mj at zopatista.com (Martijn Pieters)
Date: Thu, 05 May 2005 13:39:59 +0200
Subject: If you use PayPal you might consider an alternative
In-Reply-To: <a2fj71d9rlg3mh4s0919pdlq6d2f7u5p3t@4ax.com>
References: <d56t0h$745$1@garrison.globalnet.hr>
	<a2fj71d9rlg3mh4s0919pdlq6d2f7u5p3t@4ax.com>
Message-ID: <427A060F.8060701@zopatista.com>

Tim Roberts wrote:
> That web zite iz juzt too cutezy.  I could never truzt it, even if I hadn't
> learned about it through a newzgroup zpam.

And a quick Google shows you to be very right:

http://www.greenzapscam.com/
http://wwsn-forums.com/forum/index.php?showtopic=3496%3Ehttp://wwsn-forums.com/forum/index.php?showtopic=3496

Martijn Pieters
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From peter at engcorp.com  Wed May  4 07:30:28 2005
From: peter at engcorp.com (Peter Hansen)
Date: Wed, 04 May 2005 07:30:28 -0400
Subject: How to write this regular expression?
In-Reply-To: <mailman.139.1115189526.6583.python-list@python.org>
References: <mailman.139.1115189526.6583.python-list@python.org>
Message-ID: <maednQfrx_iwL-XfRVn-hA@powergate.ca>

could ildg wrote:
> I need a regular expression to check if a string matches it.

Why do you think you need a regular expression?

If another approach that involved no regular expressions worked much 
better, would you reject it for some reason?

-Peter


From http  Fri May 27 18:04:39 2005
From: http (Paul Rubin)
Date: 27 May 2005 15:04:39 -0700
Subject: cpu usage limit
References: <1117206216.695085.282510@g44g2000cwa.googlegroups.com>
Message-ID: <7xpsvcnx54.fsf@ruckus.brouhaha.com>

"mmf" <mf1987 at arcor.de> writes:
> How can I make sure that a Python process does not use more that 30% of
> the CPU at any time. I only want that the process never uses more, but
> I don't want the process being killed when it reaches the limit (like
> it can be done with resource module).
> 
> Can you help me?

In general you can only do that with a real-time operating system.
Most other OS's will let you adjust process priorities so that you can
prevent your Python process from hogging cycles away from other
processes.  But if the machine is idle and nobody else wants the
cycles, Python will get all of them.


From jeremy+plusnews at jeremysanders.net  Thu May 26 06:40:18 2005
From: jeremy+plusnews at jeremysanders.net (Jeremy Sanders)
Date: Thu, 26 May 2005 11:40:18 +0100
Subject: __init__() not called automatically
References: <1117081917.760603.82610@z14g2000cwz.googlegroups.com>
Message-ID: <pan.2005.05.26.10.40.18.368678@jeremysanders.net>

On Wed, 25 May 2005 21:31:57 -0700, Sriek wrote:

> Similarly, why do we have to explicitly use the 'self' keyword everytime?

I didn't like that when starting Python. Now when I look back at C++ code,
I find it very hard to work out which variables and methods and members,
and which are not, unless the author used a clear naming convention.

Jeremy



From greg at invalid.invalid  Tue May 17 23:33:23 2005
From: greg at invalid.invalid (Greg Krohn)
Date: Wed, 18 May 2005 03:33:23 GMT
Subject: A Specific PyGame
In-Reply-To: <428ab5d7$1_1@newsfeed.slurp.net>
References: <428ab5d7$1_1@newsfeed.slurp.net>
Message-ID: <7Iyie.2326$X92.1859@newsread2.news.pas.earthlink.net>

Michael P. Nugent wrote:
> I am looking for a specific "game" that is really a programming 
> environment for young kids.
> 
> I believe it implements PyGame, and presents two windows: one is a grid 
> with some obstacles, and a character that must traverse the grid; 
> another is an interactive editor that encourages a learner to write a 
> script to navigate the character around the obstacles.
> 
> I saw this within the past week, but I cannot remember or discover 
> where. I have revisited a number of PyGame related sites, and Googled 
> like crazy, but I'm not finding any visited links that are productive. 
> I've also extracted everything out of .mozilla/.../history.dat. As you 
> can see, I'm looking for a specific answer to my specific query.
> 

Perhaps you are thinking of GvR (Guido van Robot): http://gvr.sourceforge.net/ .

-greg


From gtog at _no___spam_myrealbox.com  Thu May 12 11:10:42 2005
From: gtog at _no___spam_myrealbox.com (George)
Date: Thu, 12 May 2005 17:10:42 +0200
Subject: Launch file in Notepad
In-Reply-To: <42836519.1343368812@news.oz.net>
References: <42835db6$0$1334$5fc3050@dreader2.news.tiscali.nl>
	<42836519.1343368812@news.oz.net>
Message-ID: <428372ae$0$1374$5fc3050@dreader2.news.tiscali.nl>

Bengt Richter wrote:
> On Thu, 12 May 2005 15:41:14 +0200, George <gtog at _no___spam_myrealbox.com> wrote:

>>(By the way, b1 comes from a command line parameter, so the user enters 
>>c:\test.txt as command line parameter.)
> 
> It should be ok then, unless you have somehow processed the command line parameter and interpreted
> the backslash as an escape. E.g., pargs.py here prints command line args and backslash is
> an ordinary string character as you see in argv[3] below. If it were a tab, you would see
> whitespace instead of the backslash.

Perhaps that's what I did (processing the command line parameter). For 
some reason it works now.

> If by "command line" you mean your own programmed input, make sure you use raw_input, not input, e.g.,

I was referring to the user launching my script with a filename as 
parameter:

test.py c:\test.txt

Here's my code so far (it removes blank lines from the input file (for 
example c:\test.txt), and creates a new file (c:\test_new.txt) to store 
the output):

import string
import sys
import os
if len(sys.argv)<=1:
     print 'Usage: dbl.py [filename]'
     sys.exit()
b1=sys.argv[1]
b2=b1[:-4] + '_new' + b1[-4:]
f1=open(b1,'r')
f2=open(b2,'w')
r1=f1.readlines()
for r in r1:
     if string.capwords(r)<>'':
         f2.write(r)
f1.close()
f2.close()
print 'Output file: ' + b2
os.system ('start notepad.exe ' + b2)

George


From fredrik at pythonware.com  Fri May 20 02:59:22 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Fri, 20 May 2005 08:59:22 +0200
Subject: Is Python suitable for a huge, enterprise size app?
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com><1116443474.565264.176640@g44g2000cwa.googlegroups.com><7xd5rn93zi.fsf@ruckus.brouhaha.com><mailman.198.1116493706.8733.python-list@python.org><d6ij1j$s96$1@panix3.panix.com>
	<7xpsvm6h7s.fsf@ruckus.brouhaha.com>
Message-ID: <d6k1qb$qga$1@sea.gmane.org>

Paul Rubin wrote:

>> Send e-mail to webmaster at python.org -- actually, you can have commit
>> privs if you want.
>
> I think I'm going to enter an SF bug on the issue if there isn't
> already one.  It's not obvious to me whether a reasonable fix is
> possible, but at least it should be tracked.  The current behavior is
> weird and confusing.

this has been reported before, and it won't get fixed (unless you're volunteering
to add Python-compatible garbage collection to Tk, that is).

</F> 





From http  Mon May 23 23:04:03 2005
From: http (Paul Rubin)
Date: 23 May 2005 20:04:03 -0700
Subject: Multiple threads in a GUI app (wxPython),
	communication between worker thread and app?
References: <mailman.81.1114969571.14961.python-list@python.org>
Message-ID: <7xd5rhjpek.fsf@ruckus.brouhaha.com>

Jp Calderone <exarkun at divmod.com> writes:
> >Secondly, I don't know about wxPython, but in tkinter you have to
> >resort to a kludge in order for the gui thread to handle gui events
> >and also notice stuff on a queue.  There's a tkinter command to run
> >some function after a specified time (say 50 msec).  So you'd set that
> >timeout to check the queue and restart the timer, which means the gui
> >would check 20x a second for updates from the worker threads.  When it
> >got such an update, it would create a new window or whatever.
> 
> You can do better than this.  Tkinter has an after_idle function,
> which lets you post an event to the Tkinter thread _immediately_.
> This is basically the Queue "put" operation.

I don't understand how this is supposed to work.  Can you explain a
little further?  As far as I can tell, it's not documented as safe to
call w.after_idle from another thread.  Is it actually safe according
to how the code is written?  Otherwise, the only way I can see is
to use a queue (or other synchronization object) and let the tkinter
thread check the queue periodically itself.

> > Python thread support seems to have been something of an
> > afterthought and there's a lot of weirdness like this to deal with.
>   I'm not sure what you see as weird about this.

Having to deal with this timeout stuff instead of having a documented
thread-safe way to add events to a tkinter event queue.


From onurb at xiludom.gro  Wed May 25 12:54:25 2005
From: onurb at xiludom.gro (bruno modulix)
Date: Wed, 25 May 2005 18:54:25 +0200
Subject: Python analog of Ruby on Rails?
In-Reply-To: <mailman.100.1117039885.18027.python-list@python.org>
References: <mailman.100.1117039885.18027.python-list@python.org>
Message-ID: <4294adc3$0$2526$626a14ce@news.free.fr>

Christopher J. Bottaro wrote:
> Hello fellow Pythonists,
>   Is there such a thing? 

As what ?
Oops, sorry, the question is in the subject... May be helpful to repeat
it in the body.

You may want to have a look at Subway

> My work is thinking of maybe experimenting with
> Ruby on Rails for some lesser projects.  Naturally, I wonder if Python can
> do as good a job or better...

Doing 'as good or better' does not mean 'doing the same'.

-- 
bruno desthuilliers
ruby -e "print 'onurb at xiludom.gro'.split('@').collect{|p|
p.split('.').collect{|w| w.reverse}.join('.')}.join('@')"


From fredrik at pythonware.com  Tue May 10 06:16:15 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 10 May 2005 12:16:15 +0200
Subject: why this happend using model random?
References: <d5q0ro$5lb$1@news.yaako.com>
Message-ID: <d5q17g$4lo$1@sea.gmane.org>

"flyaflya" wrote:

> from random import *
>
> col = [0 for i in range(10)]
> a = [col for  i in range(10)]

http://www.python.org/doc/faq/programming.html#how-do-i-create-a-multidimensional-list

> seed()
> for i  in range(10):
>     for j in  range(10):
>         a[i][j] = randint(0, 100)
> print a
>
> the result is:
> [[78, 65, 35, 5, 68, 60, 1, 51, 81, 70],
> [78, 65, 35, 5, 68, 60, 1, 51, 81, 70],
> [78, 65, 35, 5, 68, 60, 1, 51, 81, 70], .....]
> why result isn't true random?

because you've assigned all the values to the same list ("col").  see the link above
for details.

</F> 





From dotpyFE at gmail.com  Tue May  3 21:19:59 2005
From: dotpyFE at gmail.com (Lucas Raab)
Date: Wed, 04 May 2005 01:19:59 GMT
Subject: Any decent IM protocol implementations (icq or aim)
In-Reply-To: <mailman.104.1115130124.6583.python-list@python.org>
References: <mailman.104.1115130124.6583.python-list@python.org>
Message-ID: <3rVde.4909$V01.93@newsread1.news.atl.earthlink.net>

Jaime Wyant wrote:
> Can anyone recommend one?  Google isn't giving me much.
> 
> jw

I believe there's one for AIM called pyTOC. Trying Googling that or 
something like "Python ABC". ABC being the messenger service.

-- 
--------------------------
Lucas Raab
lvraab"@"earthlink.net
dotpyFE"@"gmail.com
AIM:	Phoenix11890
MSN:	dotpyfe "@" gmail.com
IRC:	lvraab
ICQ:	324767918
Yahoo:	Phoenix11890


From sakesun at boonthavorn.com  Sat May 21 00:54:07 2005
From: sakesun at boonthavorn.com (Sakesun Roykiattisak)
Date: Sat, 21 May 2005 11:54:07 +0700
Subject: SQL Query via python
In-Reply-To: <200505202357.01579.jeffelkins@earthlink.net>
References: <200505202357.01579.jeffelkins@earthlink.net>
Message-ID: <428EBEEF.4040500@boonthavorn.com>

Try

cursor.execute (
"""
  SELECT name, month, day ,category, city FROM bday
  WHERE %s = %s
"""
  %(arg1,arg2))

Jeff Elkins wrote:

>I'm attempting to pass an SQL query via the console:
>
>$ ./getbd month 05
>
>The arguments get seem to passed correctly (via print statements) and then:
>
>    cursor.execute ("""
>                     SELECT name, month, day ,category, city FROM bday
>                     WHERE %s = %s
>                   """,(arg1,arg2))
>
>No results. However, if I hardcode the WHERE argument with a field name:
>
> cursor.execute ("""
>                     SELECT name, month, day ,category, city FROM bday
>                     WHERE month = %s
>                   """,(arg2))
>
>It works.
>
>How can I code the left side of the WHERE clause so I can pass an arbitrary 
>field name to search on?
>
>
>Thanks,
>
>Jeff Elkins
>
>
>  
>



From sean_mcilroy at yahoo.com  Mon May 16 18:58:13 2005
From: sean_mcilroy at yahoo.com (Sean McIlroy)
Date: 16 May 2005 15:58:13 -0700
Subject: Null String Variable
In-Reply-To: <d6b27n$eai$1@nic.grnet.gr>
References: <d6b27n$eai$1@nic.grnet.gr>
Message-ID: <1116284293.856204.97470@g47g2000cwa.googlegroups.com>

well, somebody's already pointed out that bool(msg)==False iff msg==''.
i'm curious to know what's wrong with simply writing

if msg=='':
    ## do_something



From rkern at ucsd.edu  Wed May 25 23:11:11 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Wed, 25 May 2005 20:11:11 -0700
Subject: Checking for a full house
In-Reply-To: <ECBA357DDED63B4995F5C1F5CBE5B1E801B0F754@its-xchg4.massey.ac.nz>
References: <ECBA357DDED63B4995F5C1F5CBE5B1E802F3183F@its-xchg4.massey.ac.nz>
	<ECBA357DDED63B4995F5C1F5CBE5B1E801B0F754@its-xchg4.massey.ac.nz>
Message-ID: <d73ekr$868$1@sea.gmane.org>

Tony Meyer wrote:
> [Tony Meyer]
> 
>>>def isfullHouse(roll):
>>>    return len(set(roll)) != 2
> 
> [Robert Kern]
> 
>>[1, 1, 1, 1, 2] is not a full house.
> 
> Opps.  I did say it was untested (that should have been == not !=, too).
> What about:
> 
> def isfullHouse(roll):
>     return len(set(roll)) == 2 and roll.count(min(roll)) != 1 and
> roll.count(max(roll)) != 1
> 
> Although your solution looks a lot nicer than this (though it may use more
> memory, and might be slower).

It *is* slower as written, although a more optimized version using 
itertools and sets (left as an exercise for the bored) gets close to 
yours. I don't think memory is an issue with 5-element lists of small 
integers.

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From none  Thu May 12 03:51:58 2005
From: none (Hansan)
Date: Thu, 12 May 2005 09:51:58 +0200
Subject: Problem combining python code and html
References: <42822b3d$0$653$ba624c82@nntp02.dk.telia.net>
	<42826023$0$8235$636a15ce@news.free.fr>
Message-ID: <42835c82$0$26268$ba624c82@nntp06.dk.telia.net>

Any suggestions to the problem with only one character being displayed?

Thanks

Thanks for your time
"Bruno Desthuilliers" <bdesth.quelquechose at free.quelquepart.fr> wrote in 
message news:42826023$0$8235$636a15ce at news.free.fr...
> Hansan a ?crit :
>> Hi all, I hope you have time to help me out a little. My problem is that 
>> I want to combine some python code I have made with some html templates, 
>> I found a tutorial at dev shed:
> (snip a whole lot of code)
>
>> But I get the error message:
>> error: multiple repeat
>>       args = ('multiple repeat',) ", Content,TemplateInput) File 
>> "/home//Python-2.3.2//lib/python2.3/sre.py", line 151, in subn return 
>> _compile(pattern, 0).subn(repl, string, count)
>> I tried making the templates global, but that dosnt help either.
>
> Why should it ?
>
>> Is the code from dev shed wrong,
>
> Seems like... And it is *very* ugly.
>
>> And is there a nother way to combine python code and html templates?
>
> Many. The one I prefer is Zope Page Templates (there's a free-standing 
> implementation named SimpleTAL), but I didn't tried all and every existing 
> solutions.
> 




From grebe at bigfoot.com  Fri May 27 13:50:33 2005
From: grebe at bigfoot.com (George van den Driessche)
Date: Fri, 27 May 2005 18:50:33 +0100
Subject: distutils, 'scripts' and Windows
Message-ID: <d77ml7$cus$1$8300dec7@news.demon.co.uk>

Hi folks,

I'm looking at packaging a project I'm working on using distutils. The 
project is for Windows and contains a COM server which needs 
registration, so the installer needs to be a little more complicated 
than usual. Looking at the options for the bdist_wininst command to 
distutils, I see it's possible to specify
  --install-script=<myinstallscript>
which ought to do the trick. But to use this, myinstallscript itself 
must first be installed by passing
  scripts='myinstallscript'
to distutils.core.setup in setup.py. That will copy myinstallscript 
into a particular location (C:\Python24\Scripts in my case) and leave 
it there forever. Which raises a couple of questions:

- Why is myinstallscript left there forever? The documentation makes 
some vague reference to needing it for uninstalling packages, but then 
I can't actually find a way to uninstall packages.

- What is the use of the Scripts directory on Windows? It's not added 
to my PATH, so unless I do that myself it won't do anything like it's 
meant to on other platforms.

- Should I supply myinstallscript, or myinstallscript.py? I suspect the 
latter, since that's the only way to give files types on Windows.

- Is there some other better way to perform post-installation actions? 
Would it work out of a binary generated from bdist_wininst?

- Should I even be using distutils? It doesn't really matter that much 
where the files are installed because the COM server can register 
itself to run out of whatever location it happens to be in.

Thanks,
George



From jjl at pobox.com  Tue May 31 14:15:25 2005
From: jjl at pobox.com (John J. Lee)
Date: 31 May 2005 19:15:25 +0100
Subject: scripting browsers from Python
References: <1117525953.255166.234420@g14g2000cwa.googlegroups.com>
Message-ID: <ll5vntxe.fsf@pobox.com>

"Michele Simionato" <michele.simionato at gmail.com> writes:

> I would like to know what is available for scripting browsers from
> Python.
> For instance, webbrowser.open let me to perform GET requests, but I
> would like
> to do POST requests too. I don't want to use urllib to emulate a
> browser, I am
> interested in checking that browser X really works as intended with my
> application. Any suggestion?

Yes:

http://selenium.thoughtworks.com/index.html

http://agiletesting.blogspot.com/2005/03/web-app-testing-with-python-part-2.html

http://products.actimind.com/actiWATE/


Unfortunately, there's still no free (as in speech) "macro recorder"
implemented as a browser plugin (nor even one implemented on the HTTP
level that can produce output in a form selenium understands, AFAIK).

For some other relevant links, see under "Misc Links" here (and for
that matter, the previous bullet point too):

http://wwwsearch.sourceforge.net/bits/GeneralFAQ.html


John



From cdkrug at worldnet.att.net  Fri May 20 18:54:47 2005
From: cdkrug at worldnet.att.net (Charles Krug)
Date: Fri, 20 May 2005 22:54:47 GMT
Subject: performance of Nested for loops
References: <1116628510.816306.31390@g43g2000cwa.googlegroups.com>
Message-ID: <XUtje.799051$w62.634863@bgtnsc05-news.ops.worldnet.att.net>

On 20 May 2005 15:35:10 -0700, querypk at gmail.com <querypk at gmail.com>
wrote:
> Is there a better way to code nested for loops as far as performance is
> concerned.
> 
> what better way can we write to improve the speed.
> for example:
> N=10000
> for i in range(N):
>    for j in range(N):
>        do_job1
>    for j in range(N):
>        do_job2
> 

What do you see when you profile the code?  

Premature Optimization is the root of all manner of evil and all that
good stuff.



From fredrik at pythonware.com  Fri May 13 09:37:08 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Fri, 13 May 2005 15:37:08 +0200
Subject: MySQL: 'latin-1' codec can't encode character
References: <1115990748.006171.96240@g49g2000cwa.googlegroups.com>
Message-ID: <d62a3f$hlu$1@sea.gmane.org>

"francescomoi at europe.com"

> I'm trying to store a text within a MySQL field (v 3.23.58) by using
> MySQLdb
> (v 1.2.1c3).
>
> The text is: "telephone..." (note the last character)
>
> And I get this error message:
> -----------
> File "/usr/lib/python2.3/site-packages/MySQLdb/connections.py", line
> 33, in defaulterrorhandler
>     raise errorclass, errorvalue
> UnicodeEncodeError: 'latin-1' codec can't encode character u'\u2026' in
> position 288: ordinal not in range(256)
> -----------------------
>
> Position 288 is the character I've mentioned. I suppose I must encode
> this caracter
> into a right one which MySQL could store, but I have no idea about how
> to perform
> it. Any suggestion?

the character \u2026 is not part of the ISO-8859-1 character set.  if you
insist on storing that in 8-bit string, you have to find an 8-bit encoding
that includes that character (UTF-8 is one such alternative).

if MySQL is set to store ISO-8859-1 only, you can replace the character
with it with three periods, drop it (use the "ignore" encoding option) or
replace it with a suitable marker (use the "replace" encoding option).

</F>





From bogus@does.not.exist.com  Tue May  3 09:35:02 2005
From: bogus@does.not.exist.com ()
Date: Tue, 03 May 2005 13:35:02 -0000
Subject: No subject
Message-ID: <mailman.5.1572215331.3356.python-list@python.org>

#! rnews 1990
Newsgroups: comp.lang.python
Path: news.xs4all.nl!newsspool.news.xs4all.nl!transit.news.xs4all.nl!news-spur1.maxwell.syr.edu!news.maxwell.syr.edu!nntp.abs.net!attws2!ip.att.net!NetNews1!xyzzy!nntp
From: Harry George <harry.g.george at boeing.com>
Subject: Re: Py2Exe security
X-Nntp-Posting-Host: cola2.ca.boeing.com
Content-Type: text/plain; charset=us-ascii
Message-ID: <xqxd5s8v46c.fsf at cola2.ca.boeing.com>
User-Agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.4
Lines: 35
Sender: hgg9140 at cola2.ca.boeing.com
Organization: The Boeing Company
References: <1115121780.404491.84240 at f14g2000cwb.googlegroups.com>
Mime-Version: 1.0
Date: Tue, 3 May 2005 13:18:19 GMT
Xref: news.xs4all.nl comp.lang.python:375624

"Terje Johan Abrahamsen" <terjeja at gmail.com> writes:

> Hello.
> 
> We have created some programs in Python that are to be distributed
> around. The programs will be made into .exe files by py2exe. However,
> in the source there are certain webadresses, logins and passwords that
> the programs use, that we would like to keep away from the end users.
> They will use them thru the program, but we would like them not to be
> extracted and used separately for other purposes.
> 
> Is the compiling by py2exe enough? I have opened all the files in the
> directory py2exe has made, and have not found anything I could read in
> clear text. However, that does not mean that others can not. Is it
> possible to extract these passwords, adresses and logins from the
> sourcecode? If py2exe is not enough, is there some other simple tools
> we can use to hide the source from the endusers?
> 
> Thanks in advance.
> 

Putting passwords in your program is a bad idea, with or without
Python and py2exe.  Even if you wrote the program in obfuscated C, and
stripped comments etc, an attacker could use "strings" to search for
candidate passwords.  Or just start at the beginning of the program
and use each byte as a candidate starting char.


Since you are working on MS Windows, consider getting:
M. Howard, D. LeBlanc, "Writing Secure Code", Microsoft Press, 2002.

-- 
harry.g.george at boeing.com
6-6M21 BCA CompArch Design Engineering
Phone: (425) 294-4718


From hugh.macdonald at gmail.com  Tue May 24 12:33:24 2005
From: hugh.macdonald at gmail.com (Hugh Macdonald)
Date: 24 May 2005 09:33:24 -0700
Subject: Hacking the scope to pieces
In-Reply-To: <1116944386.188200.33490@g49g2000cwa.googlegroups.com>
References: <1116933053.924055.50250@g14g2000cwa.googlegroups.com>
	<mailman.51.1116944260.18027.python-list@python.org>
	<1116944386.188200.33490@g49g2000cwa.googlegroups.com>
Message-ID: <1116952404.702970.39310@g14g2000cwa.googlegroups.com>

Maybe I misunderstood what you meant, but I couldn't quite manage to
get this one working....

My initial hopes about __import__() were that I could define it inside
my new module (moduleLoader) and, when the module is imported, it could
do stuff (like try to hold onto the vars() and globals() from the
importing scope). However, I couldn't get it to import...

The route I've ended up going (which is just about as simple) is just
to return the new module from moduleLoader.loadModule, so my loading
code is:

import moduleLoader
myModule = moduleLoader.loadModule("myModule",
os.getenv("MODULE_VERSION"))

I've also switched over to using 'inp' for this, rather than creating a
compiler string - much nicer....

Anyway, thanks Skip

--
Hugh



From sebastien.ramage at gmail.com  Wed May 25 04:58:36 2005
From: sebastien.ramage at gmail.com (=?iso-8859-1?q?S=E9bastien_Ramage?=)
Date: 25 May 2005 01:58:36 -0700
Subject: embedded Python
In-Reply-To: <1117005077.657701.226750@z14g2000cwz.googlegroups.com>
References: <1117005077.657701.226750@z14g2000cwz.googlegroups.com>
Message-ID: <1117011516.103990.233410@g43g2000cwa.googlegroups.com>

PROBLEME RESOLU

j'ai r?solu le probl?me en supprimant le commutateur \GZ de le link
http://support.microsoft.com/kb/q191669/



From emami at knmi.nl  Thu May 19 05:05:39 2005
From: emami at knmi.nl (Nader Emami)
Date: Thu, 19 May 2005 11:05:39 +0200
Subject: datetime
Message-ID: <47736$428c56e3$9117fe9b$26924@news2.tudelft.nl>

L.S.,

It is very simple question: Why doesn't work the next statments?

import datetime

today = datetime.date.today()

and I get the next error:

today = datetime.date.today()
Traceback (most recent call last):
   File "<stdin>", line 1, in ?
AttributeError: time

I can't understand it!


From klaus at seistrup.dk  Mon May 16 17:18:14 2005
From: klaus at seistrup.dk (Klaus Alexander Seistrup)
Date: Mon, 16 May 2005 21:18:14 +0000 (UTC)
Subject: Null String Variable
References: <d6b27n$eai$1@nic.grnet.gr>
Message-ID: <slrnd8i3gm.7he.klaus@main.szn.dk>

Rotary wrote:

> I want to say something like that: if msg is empty ...then do 
> something. So how can i figure that msg is empty string (no 
> character, msg = ''). 

#v+

if not msg:
    print 'msg is empty'

#v-

-- 
Klaus Alexander Seistrup
Magnetic Ink, Copenhagen, Denmark
http://magnetic-ink.dk/


From rschroev_nospam_ml at fastmail.fm  Sun May  1 03:55:11 2005
From: rschroev_nospam_ml at fastmail.fm (Roel Schroeven)
Date: Sun, 01 May 2005 07:55:11 GMT
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <1114927892.321086.60190@z14g2000cwz.googlegroups.com>
References: <d4u60o$akh$1@news2.netvision.net.il>
	<mailman.47.1114818531.14961.python-list@python.org>
	<1114924100.296223.114020@g14g2000cwa.googlegroups.com>
	<1114927892.321086.60190@z14g2000cwz.googlegroups.com>
Message-ID: <zX%ce.78213$ft1.5056576@phobos.telenet-ops.be>

Dan Bishop wrote:

> Dan Bishop wrote:
> 
> Correction: Now I'm stuck on Level 11.  I think I'm supposed to do
> something with the pixels in the image, but what?

Me too. I've tried making different images out of the even and the odd 
pixels, but nothing interesting happened. I tried to combine both images 
in various ways (using the Gimp), but that also seemed to be a dead end.

I don't think we need to concernt ourselves with the individual pixel 
values; otherwise the image would not be a jpeg, it would be a non-lossy 
format instead.

The forum's tips only go up to 9, so that doesn't help either.

-- 
If I have been able to see further, it was only because I stood
on the shoulders of giants.  -- Isaac Newton

Roel Schroeven


From michaels at rd.bbc.co.uk  Mon May 23 04:28:43 2005
From: michaels at rd.bbc.co.uk (Michael Sparks)
Date: Mon, 23 May 2005 09:28:43 +0100
Subject: first release of PyPy
References: <mailman.272.1116632642.8733.python-announce-list@python.org>
Message-ID: <d6s57q$jph$1@nntp0.reith.bbc.co.uk>

holger krekel wrote:

> The PyPy 0.6 release
> --------------------
> 
> *The PyPy Development Team is happy to announce the first
> public release of PyPy after two years of spare-time and
> half a year of EU funded development.  The 0.6 release
> is eminently a preview release.*

Yay! Congratulations guys!


Michael.
-- 
Michael.Sparks at rd.bbc.co.uk    
British Broadcasting Corporation, Research and Development
Kingswood Warren, Surrey KT20 6NP

This message (and any attachments) may contain personal views
which are not the views of the BBC unless specifically stated.




From onurb at xiludom.gro  Fri May  6 12:16:53 2005
From: onurb at xiludom.gro (bruno modulix)
Date: Fri, 06 May 2005 18:16:53 +0200
Subject: Best way to convert a list into function call arguments?
In-Reply-To: <1115299220.736781.54810@o13g2000cwo.googlegroups.com>
References: <1115299220.736781.54810@o13g2000cwo.googlegroups.com>
Message-ID: <427b9878$0$9950$626a14ce@news.free.fr>

bwooster47 at gmail.com wrote:
> I'm a newcomer to python - what is the best way to convert a list into
> a function call agruments?

Jeff Epler already answered to the question. Now a couple of advices:

> For example:
> 
> list = (2005, 5, 5)

1/ this is not a list, it's a tuple. A list would be [2005, 5, 5]. (BTW, 
it's quite ok - and even better imho - to use a tuple here)

2/ using the word 'list' as identifier shadows the builtin function 
'list'. This is allowed, but you may prefer to avoid doing so.

3/ also, using the word 'list' as an identifier here is a poor choice 
from a semantic POV, since it convey useless (and in this case wrong) 
informations about an implementation detail (the data structure type) 
but says nothing about the intended use of the data. Something like 
'the_date' would have been better IMHO.

My 2 cents
-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for 
p in 'onurb at xiludom.gro'.split('@')])"


From max at alcyone.com  Sun May  1 22:12:24 2005
From: max at alcyone.com (Erik Max Francis)
Date: Sun, 01 May 2005 19:12:24 -0700
Subject: Static Methods in Python
In-Reply-To: <1114999599.608054.52730@f14g2000cwb.googlegroups.com>
References: <1114999599.608054.52730@f14g2000cwb.googlegroups.com>
Message-ID: <HtCdnR9hgaMVEejfRVn-qA@speakeasy.net>

Kris wrote:

>   I am a newbie to Python. With a background in Java, I was attempting
> to write static methods in the class without the self as the first
> parameter, when I got an error. I did a search for the same on Google
> and found out that there was no consistent approach to this. I would
> like to know what is the prescribed approach for the same. Any
> thoughts, pointers about the same would be very much appreciated.

Do something like (2.4):

	@staticmethod
	def aStaticMethod(x, y, z):
	    ...

Prior to 2.4, use:

	def aStaticMethod(x, y, z):
	    ...
	aStaticMethod = staticmethod(aStaticMethod)

-- 
Erik Max Francis && max at alcyone.com && http://www.alcyone.com/max/
San Jose, CA, USA && 37 20 N 121 53 W && AIM erikmaxfrancis
   Wyrd has swept all my kin / all the brave chiefs away! / Now I must
   follow them! -- Beowulf


From jstroud at mbi.ucla.edu  Fri May 20 18:46:53 2005
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Fri, 20 May 2005 15:46:53 -0700
Subject: passing arguments
In-Reply-To: <200505201826.09939.jeffelkins@earthlink.net>
References: <200505201826.09939.jeffelkins@earthlink.net>
Message-ID: <200505201546.53578.jstroud@mbi.ucla.edu>

import sys

try:
  arg1 = sys.argv[1]
except IndexError:
  print "This script takes an argument, you boob!"
  sys.exit(1)

OR, way better: See the optparse module.


On Friday 20 May 2005 03:26 pm, Jeff Elkins wrote:
> I'm sure this is obvious, but how the heck do pass an argument(s) to a
> python script from the command line?
>
> Thanks,
>
> Jeff Elkins

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From rrr at ronadam.com  Wed May 18 01:51:13 2005
From: rrr at ronadam.com (Ron Adam)
Date: Wed, 18 May 2005 05:51:13 GMT
Subject: Quick Reference from module doc strings.
In-Reply-To: <1116389035.309275.94580@o13g2000cwo.googlegroups.com>
References: <mailman.65.1116085574.29328.python-list@python.org>
	<1116199904.205240.58300@g49g2000cwa.googlegroups.com>
	<mailman.15.1116204313.8733.python-list@python.org>
	<42880d98$1@nntp0.pdx.net>
	<mailman.27.1116217027.8733.python-list@python.org>
	<1116320306.737808.313530@g44g2000cwa.googlegroups.com>
	<mailman.108.1116346297.8733.python-list@python.org>
	<1116349136.477233.205260@z14g2000cwz.googlegroups.com>
	<j6sie.28531$w15.2371@tornado.tampabay.rr.com>
	<1116389035.309275.94580@o13g2000cwo.googlegroups.com>
Message-ID: <lJAie.45506$IO.9626@tornado.tampabay.rr.com>

Michele Simionato wrote:
> Ron Adam:
> 
>>Thats part of what I'm trying to resolve, the doc strings a lot of
> 
> time
> 
>>isn't enough by itself or is missing. So I'm trying to build up a
>>complete enough record so if there is no doc string, at least some
> 
> sense
> 
>>of what it is can be figured out without a lot browsing or looking at
>>the source code.
> 
> 
> I have a command line option so I can decide if I want to display only
> the
> documented objects or every object, including the ones without
> docstring.
> I could add an option to tell "minidoc" to interpret docstrings are
> plain
> text, not restructured text; however I don't want to do that (part of
> the reason for "minidoc" is to force me to write good reST docstrings
> in my own modules).

If it works, don't fix it.  ;-)


>>Then to enable different searches by subject and keywords on these
>>instead of by package or module.
> 
> 
> Well,  my browser has a CTRL-F functionality ;)

I recently switched over to using the GVIMs Cream version as an editor, 
So it should be possible to map a function key to grab the import 
statements from the currently edited document, feed the imported module 
names to quickref and capture the output in a window for searching in 
the same way.

It will be fun to play around with once I get back from a week long trip 
starting Thursday.


>>in case it was an over site.
>  
> Yes, I am aware of it, it was on purpose ;)

I was pretty sure it was.


>>Ps... I like your physics link page. :)
> 
> That page is old, I am no more in physics, but I still have that
> account for free
> and I am lazy, so I am keeping it ;)
> 
>                                 Michele Simionato

I'm not in physics in *any* way, but I have a few pet theories (more 
like opinions really).  So I like to check what's going on and see if 
anyone or anything proves or disproves them.  ;-)


From tjreedy at udel.edu  Wed May 11 20:17:25 2005
From: tjreedy at udel.edu (Terry Reedy)
Date: Wed, 11 May 2005 20:17:25 -0400
Subject: Python Documentation (should be better?)
References: <mailman.389.1115837608.29826.python-list@python.org><1115839271.271071.32710@z14g2000cwz.googlegroups.com><mailman.393.1115840571.29826.python-list@python.org>
	<1115841659.470657.33320@o13g2000cwo.googlegroups.com>
Message-ID: <d5u6s8$g8p$1@sea.gmane.org>


"S?bastien Boisg?rault" <Sebastien.Boisgerault at gmail.com> wrote in message 
news:1115841659.470657.33320 at o13g2000cwo.googlegroups.com...
>
> "Manual" == scope of the *Lib Reference* + informal style of the
> *Tutorial*,

You, as well as the OP, left out the Language Reference, which is the 
manual (by me definition) for the language itself.  Chapter 2 of the Lib 
Reference on builtin types and functions is essential also and should be 
read in its entirety.  The rest, to me, is 'need to know' reading, 
especially since the addition of string methods.

> Consider non-official manuals such as:
>    + http://diveintopython.org/toc/index.html (free)
>    + python in a nutshell
>    + python cookbook
>    + etc.

Yes, these and others (the etc) are helpful too, and should not be 
discounted just because they are maintained independently of the core 
developer group.

Terry J. Reedy





From steve at REMOVETHIScyber.com.au  Sat May  7 10:42:22 2005
From: steve at REMOVETHIScyber.com.au (Steven D'Aprano)
Date: Sun, 08 May 2005 00:42:22 +1000
Subject: Ask for a tool to protect my .pyc file :)
References: <BAY24-F22527E1FA6EF0916C8A599951C0@phx.gbl>
	<mailman.140.1115473562.29826.python-list@python.org>
Message-ID: <pan.2005.05.07.14.42.21.479747@REMOVETHIScyber.com.au>

On Sat, 07 May 2005 06:45:32 -0700, Robert Kern wrote:

> Lily Kakm wrote:
>> when I distribute my software, I will give the users .pyc file (maybe I can 
>> use py2exe, but I think there's no essential different), because I don't 
>> like them to know my source code.
>> 
>> But actually, through .pyc file is not so directly as .py file, but the user 
>> can also easily guest the detail of the program. Because in the .pyc file, 
>> the name of the variables are exist.
>> 
>> I ask you for a tool. Maybe it can hide the name of the variables.
> 
> That's not going to provide you any security. Any competent attacker 
> won't care what you name the variables.
> 
> If you want real security, don't distribute your code. Expose the 
> critical parts as a web service (or similar) instead.
> 
> If you want pretend security, .pycs or py2exe executables are enough.

Lily, I think the point that Robert is making is that you have to ask,
"Why do I want to keep my code secret?"

If the answer is "My code is very bad and I don't want people to see it
because I am ashamed", then distributing .pyc files is good enough. Or
better, learn to write better code.

If the answer is, "My code is worth a lot of money, and I don't want
people to copy it", then hiding variable names will not protect you. If
your code is worth enough money, then people will spend hundreds of hours
cracking whatever security you use. The more valuable your code, the more
time and effort they will spend.

And using variables like xxxxxxxy won't protect you from competent
programmers. As soon as they read the code and realise that xxxxxxxy is a
node, they will do a Search and Replace of "xxxxxxxy" to "some_node" and
have readable code again.

So why do you want to hide your code? Who do you expect to hide it from?

[snip]
>> xxxxxxxxxx = 100
>> xxxxxxxxxy = 500 - xxxxxxxxxx
>> 
>> It has the same function, but it can not easily be seen by the users.
> 
> Reads just fine to me.

In fairness Robert, would you really want to read 10,000 lines of code
like that? I know I wouldn't -- not even 100 lines. 

Obfuscated code like that is, well, obfuscated. That makes it the
opposite of well-written, easily maintained and understood code. This
isn't a impenetrable barrier to a motivated programmer, but it is hardly
easy to read.


>> Do you know where to download a tool like this.
> 
> You ask an open source software community for a free tool to keep your 
> source proprietary? High expectations.

Again, in fairness, source code obfuscation isn't wrong in and of itself.
For example, Lily might be a teacher running a course on
reverse-engineering, and wants some Python code that can't easily be
understood by just reading the source.

Well, it's possible *wink*

Lily, if you are still reading, I think it is very important that you
think about why you want to keep your source code secret. Then think about
the alternative: publish your code as Open Source software.

There are many companies these days who make money from Open Source
software, including IBM, Red Hat, Apple, Sun, all the way down to small
businesses like the one I work for. (Modesty prevents me mentioning the
name, but if you look at my email address you should be able to work it
out.)

If you aren't selling your software, but just want people to be able to
download it and use it, then think about the advantages of making the code
available. If you can't think what those advantages are, please ask, I'm
sure many people here will be more than happy to discuss it with you.

Finally, if you still decide that you want to keep your code secret, that
Open Source is not for you, then I suggest you do a Google search on
"python obfuscater". If you don't find anything, then you can always write
your own.



Steven.






From Facundo.Batista at telefonicamoviles.com.ar  Mon May  9 16:18:15 2005
From: Facundo.Batista at telefonicamoviles.com.ar (Batista, Facundo)
Date: Mon, 9 May 2005 17:18:15 -0300 
Subject: PyAr - Python Argentina 9th Meeting, this Thursday
Message-ID: <A128D751272CD411BC9200508BC2194D053C8437@escpl.tcp.com.ar>

The Argentine Python User Group, PyAr, will have its nineth
meeting this Thursday, May 12nd at 7:00pm.


Agenda
------

Despite our agenda tends to be rather open, this time we would
like to cover these topics:

- See what we'll do with the t-shirts, and other "merchandising".
- Analyze a future meeting point.

	
Where
-----

We're meeting at Hip Bar, Hip?lito Yirigoyen 640, Ciudad de Buenos
Aires, starting at 19hs. We will be in the back room, so please ask
the barman for us.


About PyAr
----------

For more information on PyAr see http://pyar.decode.com.ar (in Spanish), 
or join our mailing list (Also in Spanish. For instructions see 
http://pyar.decode.com.ar/Members/ltorre/listademail)

We meet on the second Thursday of every month.

.	Facundo

  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . .
ADVERTENCIA.

La informaci?n contenida en este mensaje y cualquier archivo anexo al mismo,
son para uso exclusivo del destinatario y pueden contener informaci?n
confidencial o propietaria, cuya divulgaci?n es sancionada por la ley.
Si Ud. No es uno de los destinatarios consignados o la persona responsable
de hacer llegar este mensaje a los destinatarios consignados, no est?
autorizado a divulgar, copiar, distribuir o retener informaci?n (o parte de
ella) contenida en este mensaje. Por favor notif?quenos respondiendo al
remitente, borre el mensaje original y borre las copias (impresas o grabadas
en cualquier medio magn?tico) que pueda haber realizado del mismo.
Todas las opiniones contenidas en este mail son propias del autor del
mensaje y no necesariamente coinciden con las de Telef?nica Comunicaciones
Personales S.A. o alguna empresa asociada.
Los mensajes electr?nicos pueden ser alterados, motivo por el cual
Telef?nica Comunicaciones Personales S.A. no aceptar? ninguna obligaci?n
cualquiera sea el resultante de este mensaje.
Muchas Gracias.
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From f.geiger at vol.at  Fri May 27 15:35:49 2005
From: f.geiger at vol.at (F. GEIGER)
Date: Fri, 27 May 2005 21:35:49 +0200
Subject: [pysqlite] Equivalent for SHOW TABLES?
Message-ID: <d77sqb$6lk$1@news.hispeed.ch>

For now, the names of the tables, the app knows of, are added into an
internal list, when the app is started. Then, when queries fail, the app
knoes that it has to create them.

It would be nice somehow to be able to ask the database what tables it
contains. Is anyone doing this that way? How do you do that?

Kind regards
Franz GEIGER




From Alexander_Zatvornitskiy at p131.f3.n5025.z2.fidonet.org  Mon May 16 12:58:24 2005
From: Alexander_Zatvornitskiy at p131.f3.n5025.z2.fidonet.org (Alexander)
Date: Mon, 16 May 2005 20:58:24 +0400
Subject: trouble with copy/deepcopy
Message-ID: <MSGID_2=3A5025=2F3.131_42890b9a@fidonet.org>

Hello!

I have trouble with copy/deepcopy. It seems, I just don't understand something.
Please explain where things goes wrong and how to do it the right way.

I have one class:

class Distribution:
  __gr_on_transp=dict()
  __ostatok_m=dict()
and so on

And, I want to make full copy of it:
d1=Distribution()
d2=copy.deepcopy(d1)

But, members-dictionaries are don't copied. For example if I will write:
d1.clear()
which clears all two dictionaries, I will find that d2's dictionaries are also
empty!!!

Now I'am using the quick-hack:

class Distribution:
  __gr_on_transp=dict()
  __ostatok_m=dict()
  ...
  def my_copy(self):
    d2=copy.deepcopy(self)
    d2.__gr_on_transp=self.__gr_on_transp.copy()
    d2.__ostatok_m=self.__ostatok_m.copy()
    return d2

It's work well, but I don't understand why previous is wrong and how to do it
in right way.

Alexander, zatv at bk.ru


From chris.lyon at spritenote.co.uk  Tue May 10 11:30:23 2005
From: chris.lyon at spritenote.co.uk (chris.lyon at spritenote.co.uk)
Date: 10 May 2005 08:30:23 -0700
Subject: Library Naming Conventions.
References: <1114851378.781754.194030@z14g2000cwz.googlegroups.com>
	<1114860766.488589.152380@o13g2000cwo.googlegroups.com>
Message-ID: <1115739023.302545.109300@o13g2000cwo.googlegroups.com>

quoting:

      Modules should have short, lowercase names, without underscores.

this still doesn't explain Cookie.




wittempj at hotmail.com wrote:
> see http://www.python.org/peps/pep-0008.html for naming conventions
and
> other style issues



From efoda5446 at yahoo.com  Sat May 28 17:40:27 2005
From: efoda5446 at yahoo.com (Lorn)
Date: 28 May 2005 14:40:27 -0700
Subject: String manipulations
Message-ID: <1117316427.826830.189260@g14g2000cwa.googlegroups.com>

I'm trying to work on a dataset that has it's primary numbers saved as
floats in string format. I'd like to work with them as integers with an
implied decimal to the hundredth. The problem is that the current
precision is variable. For instance, some numbers have 4 decimal places
while others have 2, etc. (10.7435 vs 1074.35)... all numbers are of
fixed length.

I have some ideas of how to do this, but I'm wondering if there's a
better way. My current way is to brute force search where the decimal
is by slicing and then cutoff the extraneous numbers, however, it would
be nice to stay away from a bunch of if then's.

Does anyone have any ideas on how to do this more efficiently?

Many Thanks,
Lorn



From martin.witte at gmail.com  Sat May  7 18:40:02 2005
From: martin.witte at gmail.com (wittempj@hotmail.com)
Date: 7 May 2005 15:40:02 -0700
Subject: globbing multiple wildcards
In-Reply-To: <1115504878.558146.327440@f14g2000cwb.googlegroups.com>
References: <1115477662.937084.260270@g14g2000cwa.googlegroups.com>
	<p15fe.4173$5I5.437956@newshog.newsread.com>
	<1115481354.357281.240920@g14g2000cwa.googlegroups.com>
	<1115504878.558146.327440@f14g2000cwb.googlegroups.com>
Message-ID: <1115505602.061603.113530@f14g2000cwb.googlegroups.com>

Then take a look at os.walk, see
http://docs.python.org/lib/os-file-dir.html



From rrr at ronadam.com  Tue May 17 12:10:59 2005
From: rrr at ronadam.com (Ron Adam)
Date: Tue, 17 May 2005 12:10:59 -0400
Subject: Quick Reference from module doc strings.
In-Reply-To: <1116320306.737808.313530@g44g2000cwa.googlegroups.com>
References: <mailman.65.1116085574.29328.python-list@python.org>	<1116199904.205240.58300@g49g2000cwa.googlegroups.com>	<mailman.15.1116204313.8733.python-list@python.org>	<42880d98$1@nntp0.pdx.net>	<mailman.27.1116217027.8733.python-list@python.org>
	<1116320306.737808.313530@g44g2000cwa.googlegroups.com>
Message-ID: <428A1793.2090403@ronadam.com>

Michele Simionato wrote:
>>Do you have any feature suggestions, additional information that
> 
> could
> 
>>go in, something that would extend the content in some way and make
> 
> it
> 
>>more useful?
> 
> 
> I have written something similar which I use all the time. It generates
> ReST
> output which I can browse with "less" from the command line, as well as
> HTML
> output and PDF output that I can print. The hard work is done by
> docutils, of course.
> I have options to specify if I want to least private names or not, and
> to specify
> if I want an analytical index to be generated or not. Also, the HTML
> output
> contains hyperlinks to the original source code, so I can see  it with
> a click.
> I can feed to "minidoc" whole packages (it works recursively on
> subpackages, so everything is documented).
> 
> It was unvaluable in my struggle with Zope.
> 
>             Michele Simionato
> 

Hi Michele,

Sound great!  Adding a command line parser, I'm going to add a brief 
command line parser to it today, but nothing as elaborate as you have 
already.  Could you post a part of the output as an example?  How is the 
index built?

The direction I'm going is to build a database/dictionary with each 
individual item as a record. Maybe feed it the whole lib directory, then 
to be able to generate cross module/package lists by subject or keyword. 
  I'm not exactly sure how to connect everything together yet.  This is 
a figure it out as I go project, but I think it's worth trying.

Cheers,
_Ron







From fredrik at pythonware.com  Thu May  5 05:12:10 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 5 May 2005 11:12:10 +0200
Subject: UnicodeDecodeError
References: <000801c5516c$19a41a30$bb64a8c0@eformswin>
Message-ID: <d5cnoc$ds4$4@sea.gmane.org>

Thomas Thomas wrote:

> filename=unicode(filename);
> #file = ('file', filename, data) #This won't work will give a
> UnicodeDecodeError: 'ascii' codec can't decode byte 0xc7
> in position 10: ordinal not in range(128)

there's no way the tuple creation will generate a UnicodeDecodeError
all by itself.  are you sure the error occurs on that line?

are you running this with a stock interpreter, or are you using some
fancy IDE thing?

what does filename really contain?  (there's no "0xc7" character in the
filepath in your example).  try adding

    print repr(filepath)

before the os.path.split call, and let us know what it prints.

</F>





From anton.vredegoor at gmail.com  Sat May 14 07:21:04 2005
From: anton.vredegoor at gmail.com (anton.vredegoor at gmail.com)
Date: 14 May 2005 04:21:04 -0700
Subject: Python on a public library computer
Message-ID: <1116069664.779281.320540@g47g2000cwa.googlegroups.com>

Here's my situation:

I'm typing this in a public library on a computer with OS windows 2000
server. I can run Internet explorer, word, excel and powerpoint, that's
it. Maybe java, but it seems to be flaky.

I want to run python scripts from this computer. At home I have a
multi-computer network (from better times) but no internet access
anymore, I could use this to try out solutions. I also have access to a
friends computer which has internet connection, but I can't visit his
place all the time. He's away often but he's got a life of his own :-)

So I'm thinking of running some kind of python webserver from a
dedicated computer over there (visualizing some cherrypy webpage based
interpreter at the moment) but I would like to know other options.
However it would have to run from a webpage here ...

For example I would like to run a python script over there (e.g.
getting news from a usenet server) which puts the output in a zipfile
on another webpage so that I can fetch it here with the Internet
Explorer.

There seems to be no traffic load problem since there would be only a
few users (but it could become popular fast?). Also I'm worried about
security issues, but not so much that I would consider installing some
large scale payware professional solution.

Let me know what you think, unless it costs money. On the other hand
money would solve this problem so if I can do something to get that it
would be even better.

Anton

[the things they make you go through ...]



From mwm at mired.org  Mon May 16 03:21:00 2005
From: mwm at mired.org (Mike Meyer)
Date: Mon, 16 May 2005 02:21:00 -0500
Subject: Jesus said, "I am the way, the truth and the life: no one can
	come to the Father(God)(in Heaven), but by me." (John 14:6) This means
	that if you die without trusting in Jesus Christ as your Lord and
	Saviour you will die in your sins and be forever sepa
References: <1116096706.696830.275140@g44g2000cwa.googlegroups.com>
	<Etvhe.1353573$8l.349001@pd7tw1no>
	<wemdnVcXpcOIIxvfRVn-tQ@comcast.com>
	<rockon02-1505052236350001@1cust127.tnt6.adl1.da.uu.net>
Message-ID: <86sm0nd4bn.fsf@guru.mired.org>

rockon02 at senet.com.au (Mike brown) writes:

> In article <wemdnVcXpcOIIxvfRVn-tQ at comcast.com>, "Bubba" <im at home.com> wrote:
>
>> I'm so glad you've decided what everyone believes....
>> 
>
>
>
> Some of us don't.
>
>
>
>
>
> Believe that is.
>
>
>
>
>
> In anything in particular.


Everybody should believe in something.






I believe I'll have another beer.


  <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From me at privacy.net  Wed May 18 10:22:38 2005
From: me at privacy.net (Dan Sommers)
Date: 18 May 2005 10:22:38 -0400
Subject: speeding up Python script
References: <3evgolF56gtkU3@individual.net>
	<mailman.125.1116378401.8733.python-list@python.org>
	<3f0os2F4lpshU1@individual.net>
Message-ID: <m2acms62c1.fsf@unique.fully.qualified.domain.name.yeah.right>

On Wed, 18 May 2005 12:56:50 +0100,
"Luis P. Mendes" <luis_lupe2XXX at netvisaoXXX.pt> wrote:

> The reason why I'm using six nested for loops is because I need to find
> the best output using those six variables as input.

> Here's the simplified code:

> for per in range():
> ~    for s in range():
> ~        for t in range():
> 	    for v in range():
> ~                for n in range():
> ~                    for l in range():
> 			var a, \
> 			var b, \
> 			...
> 			var 15 = function1(arg1, \
> 						...
> 						arg20)
> ~ 						var a, \
> 			var d, \
> 			var a, \
> 			...
> 			var 14 = function2(arg1, \
> 						...
> 						arg25)
> 			var c, \
> 			...
> 			var 18 = function3(arg1, \
> 						...
> 						arg20)
> 		ia = var1*var2-numPerdidos*sl
> 												result.insert(index, [per,s,t,v,n,l,ia])
> 		index = index + 1

> thanks for the replies

I don't know how large your search-space is, but if the ranges for s, t,
v, n, and/or l don't change, at the very least you can pre-compute those
ranges instead of creating a new list with range every time:

srange = range( <whatever> )
trange = range( <whatever> )
vrange = range( <whatever> )
nrange = range( <whatever> )
lrange = range( <whatever> )

for per in range( <whatever> ):
  for s in srange:
    for t in trange:
      for v = vrange:
        for n in nrange:
          for l in nrange:
            somevar = somefunction( per, s, t, v, n, l )
            result.append( [ somevar, per, s, t, v, n, l ] )

(Appending the results is probably quicker than inserting them, but I
don't know for sure.)

But a better-than-an-exhaustive-search algorithm sounds like a good
idea, too.

Regards,
Dan

-- 
Dan Sommers
<http://www.tombstonezero.net/dan/>


From steven.bethard at gmail.com  Thu May  5 14:17:15 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Thu, 05 May 2005 12:17:15 -0600
Subject: How to detect a double's significant digits
In-Reply-To: <1115316826.659271.247350@o13g2000cwo.googlegroups.com>
References: <1115314620.902071.323410@f14g2000cwb.googlegroups.com>
	<mailman.59.1115316262.29826.python-list@python.org>
	<1115316826.659271.247350@o13g2000cwo.googlegroups.com>
Message-ID: <iZ-dnQ8kqqS3_uffRVn-2Q@comcast.com>

mrstephengross wrote:
> First of all, str() is not a function.

Yes it is.

> float f = 1.004;
> ostringstream s;
> s << f;
> cout << s.str();

This doesn't look like Python to me.  Are you sure you're on the right 
newsgroup?

STeVe


From donn at drizzle.com  Wed May 11 02:17:06 2005
From: donn at drizzle.com (Donn Cave)
Date: Wed, 11 May 2005 06:17:06 -0000
Subject: Python Args By Reference
References: <1115769308.136143.74080@f14g2000cwb.googlegroups.com>
	<1182j1daaepv6f4@corp.supernews.com>
	<1115787330.723188.295610@f14g2000cwb.googlegroups.com>
Message-ID: <1115792224.936633@yasure>

Quoth "ncf" <nothingcanfulfill at gmail.com>:
...
| The two issues I am having in grasping all of this are as follows:
| 1) Being new to Python, terms like mutable and immutable. Although I
| have probably dealt with them in other languages, the terms by
| themselves are a little confusing, but managable overall, so this issue
| isn't so big.

It's often introduced in a confusing way.  We just say it's mutable
if it has one or more functions that modify its contents.  There
isn't any other distinction, any other difference than that.

| 2) LARGELY, my issue is as demonstrated by the following code. I was
| trying to accomplish an effect similar to what is possible in C.
| (Trying to make a pure-python FIPS-180-2 compliant implementation of
| the SHA-256 algorithm for more Python practice and to put into some
| code for a *trial* secure protocol.)
| Example C Code:
| #define P(a,b,c,d,e,f,g,h,x,K) \
| { \
| temp1 = h + S3(e) + F1(e,f,g) + K + x; \
| temp2 = S2(a) + F0(a,b,c); \
| d += temp1; h = temp1 + temp2; \
| }
|
| Python Code:
| def P(a,b,c,d,e,f,g,h,x,K):
|     temp1 = h + S3(e) + F1(e,f,g) + K + x
|     temp2 = S2(a) + F0(a,b,c)
|     d += temp1; h = temp1 + temp2
|
| The reason why it'd be a pain to implement this by any of the methods
| provided in the Python FAQs is that SHA-256 rotates the variable order
| in the calls. Example code:
|     P( A, B, C, D, E, F, G, H, W[ 0], 0x428A2F98 );
|     P( H, A, B, C, D, E, F, G, W[ 1], 0x71374491 );
|     P( G, H, A, B, C, D, E, F, W[ 2], 0xB5C0FBCF );
|     P( F, G, H, A, B, C, D, E, W[ 3], 0xE9B5DBA5 );
|     P( E, F, G, H, A, B, C, D, W[ 4], 0x3956C25B );
|     P( D, E, F, G, H, A, B, C, W[ 5], 0x59F111F1 );
|     P( C, D, E, F, G, H, A, B, W[ 6], 0x923F82A4 );
|     P( B, C, D, E, F, G, H, A, W[ 7], 0xAB1C5ED5 );
|     P( A, B, C, D, E, F, G, H, W[ 8], 0xD807AA98 );
|
| Since I cannot simply do it the way I had originally seen it, would
| there be an alternative method to proforming the operations that I am
| missing?

I could be missing something, but I think you just have to suck it up
and do it one of the other two ways:

1.  The more or less functional way:  the function doesn't
    have any side effects.  It just returns the values it
    computes, and it's for the caller to bind them to variables.

      D, H = P(A, B, C, D, E, F, G, H, W[0], 0x428A2F98)
      C, G = (H, A, B, C, D, E, F, G, W[1], 0x71374491)
      ...

2.  The OOP way:  each object has the appropriate function
    that modifies its content value.  That looks like a
    big waste of time to me, but I mention it for conceptual
    completeness.

	Donn Cave, donn at drizzle.com


From domma at procoders.net  Wed May 11 14:49:44 2005
From: domma at procoders.net (Achim Domma (Procoders))
Date: Wed, 11 May 2005 20:49:44 +0200
Subject: win32com and ADO
In-Reply-To: <1115833669.142021.294080@g44g2000cwa.googlegroups.com>
References: <1115833669.142021.294080@g44g2000cwa.googlegroups.com>
Message-ID: <d5tk41$ae3$02$1@news.t-online.com>

Chris Curvey wrote:

> result = conn.execute("select * from foo")
> 
> while not result.EOF:
>     doSomething()
>     result.MoveNext()
> 
> 'tuple' object has no attribute EOF

The recordset you are looking for is a element of the tuple. Out of my 
head I would say it's element 1, so you have to write:

result = conn.execute("select * from foo")[1]

regards,
Achim


From cappy2112 at gmail.com  Mon May  2 22:18:16 2005
From: cappy2112 at gmail.com (Cappy2112)
Date: 2 May 2005 19:18:16 -0700
Subject: WordPress Python Library 1.0
In-Reply-To: <Rmwde.850131$b5.37722456@news3.tin.it>
References: <Rmwde.850131$b5.37722456@news3.tin.it>
Message-ID: <1115086696.356342.76870@f14g2000cwb.googlegroups.com>

If you wan't explain what WordPress is, can you at least supply a link
for a page that's in English?



From exarkun at divmod.com  Fri May 27 10:17:58 2005
From: exarkun at divmod.com (Jp Calderone)
Date: Fri, 27 May 2005 14:17:58 GMT
Subject: write to the same file from multiple processes at the same time?
In-Reply-To: <7x1x7siy3b.fsf@ruckus.brouhaha.com>
Message-ID: <20050527141758.559.523559912.divmod.quotient.11154@ohm>

On 27 May 2005 06:43:04 -0700, Paul Rubin <"http://phr.cx"@nospam.invalid> wrote:
>Jp Calderone <exarkun at divmod.com> writes:
>> >But they haven't.  They depend on messy things like server processes
>> >constantly running, which goes against the idea of a cgi that only
>> >runs when someone calls it.
>>
>> SQLite is an in-process dbm.
>
>http://www.sqlite.org/faq.html#q7
>
>    (7) Can multiple applications or multiple instances of the same
>    application access a single database file at the same time?
>
>    Multiple processes can have the same database open at the same
>    time. Multiple processes can be doing a SELECT at the same
>    time. But only one process can be making changes to the database
>    at once.
>
>But multiple processes changing the database simultaneously is
>precisely what the OP wants to do.

Er, no.  The OP precisely wants exactly one process to be able to write at a time.  If he was happy with multiple processes writing simultaneously, he wouldn't need any locking mechanism at all >:)

If you keep reading that FAQ entry, you discover that SQLite implements its own locking mechanism internally, allowing different processes to *interleave* writes to the database, and preventing any data corruption which might arise from simultaneous writes.

That said, I think an RDBM is a ridiculously complex solution to this simple problem.  A filesystem lock, preferably using the directory or symlink trick (but flock() is fun too, if you're into that sort of thing), is clearly the solution to go with here.

Jp


From no at spam.com  Sun May 22 19:55:37 2005
From: no at spam.com (John Doe)
Date: Mon, 23 May 2005 02:55:37 +0300
Subject: How come print cannot be assigned to a variable?
In-Reply-To: <1116600042.622872.49850@g14g2000cwa.googlegroups.com>
References: <1116600042.622872.49850@g14g2000cwa.googlegroups.com>
Message-ID: <d6r65o$22q$1@news2.netvision.net.il>

anonymousnerd at gmail.com wrote:
> Hi all,
>     In Python, some functions can be assigned to variables like this:
>         length=len
> Why is it that print cannot be assigned to a variable like this? (A
> syntax error is declared.)
> 
>   Thanks,
> 
>  Vaibhav
> 

print can't be assigned to variables since it's not a funcion, it's part
of the syntax of the language, like `for', `while', etc. and it can't be
assigned to variables, just as those can't be assigned.
If you need a function that prints stuff, consider these two examples:
[snip]
PrintFunc = lambda x: print x
[snip]
Or, a somewhat better solution:
[snip]
import sys
PrintFunc = sys.write
[snip]


From eee at nmt.edu  Tue May 10 13:18:57 2005
From: eee at nmt.edu (Earl Eiland)
Date: Tue, 10 May 2005 11:18:57 -0600
Subject: error using process module Process class
Message-ID: <1115745537.2995.256.camel@dulcevida>

When executing the following code snippet

import process
...
...
for x in Files:
	Command_String = 'C:\Program Files\WinRK\WinRK.exe -create ' +
os.path.join(InputDirectory, os.path.splitext(x)[0]) + ' -set
compression_method ppmz -setg include_paths none -add ' +
os.path.join(InputDirectory, x) + ' -apply -quit'
	PROC = process.Process(Command_String)
	PROC.wait()

from the command line

C:\Documents and Settings\eeiland\Desktop>Thesis_Programs\Compressor2.py
Test_Da
ta\sliceX12 Test_Output\Test

generates the following error:

Traceback (most recent call last):
  File "C:\Documents and
Settings\eeiland\Desktop\Thesis_Programs\Compressor2.py
", line 61, in ?
    PROC = process.Process(Command_String)
  File "C:\Python24\Lib\site-packages\process.py", line 839, in __init__
    self._startOnWindows()
  File "C:\Python24\Lib\site-packages\process.py", line 913, in
_startOnWindows
    cmd = _whichFirstArg(cmd, self._env)
  File "C:\Python24\Lib\site-packages\process.py", line 303, in
_whichFirstArg
    import which
ImportError: No module named which




From Wibble at Mailinator.com  Mon May 23 07:14:05 2005
From: Wibble at Mailinator.com (Wibble)
Date: Mon, 23 May 2005 07:14:05 -0400
Subject: What are OOP's Jargons and Complexities?
In-Reply-To: <1116843761.619249.144790@g47g2000cwa.googlegroups.com>
References: <1116843761.619249.144790@g47g2000cwa.googlegroups.com>
Message-ID: <ePWdncOFutGcJgzfRVn-gA@rcn.net>

You're point being...?

I'm an old lisp hacker too, and lisp developed
objects too, because they're cool and useful (Flavors & CLOS).

Java has inner classes also, and nobody misses FLET & LABELS.

Limiting responsiblity and enhanced type safety, as well as
improved readablity are a win hands down over the bad old
days.

Lisp is not a more advanced language than Java.  Its 30+
years older and shows it in alot places.  Lisp has some
things I wish were in Java but the corralary holds true.

Object orient programming in Lisp is nice too.

Xah Lee wrote:
> What are OOP's Jargons and Complexities
> Xah Lee, 20050128
> 
> The Rise of Classes, Methods, Objects
> 
> In computer languages, often a function definition looks like this:
> subroutine f (x1, x2, ...) {
>   variables ...
>   do this or that
> }
> 
> In advanced languages such as LISP family, it is not uncommon to define
> functions inside a function. For example:
> subroutine f (x1, x2, ...) {
>   variables...
>   subroutine f1 (x1...) {...}
>   subroutine f2 (x1...) {...}
> }
> 
> Often these f1 f2 inner functions are used inside f, and are not
> relevant outside of f. Such power of the language gradually developed
> into a style of programing. For example:
> subroutine a_surface () {
>   coordinatesList = ...;
>   subroutine translate (distance) {...}
>   subroutine rotate (angle) {..}
> }
> 
> Such a style is that the a_surface is no longer viewed as a function.
> But instead, a boxed set of functions, centered around a piece of data.
> And, all functions for manipulating this piece of data are all embodied
> in this function. For example:
> subroutine a_surface (arg) {
>   coordinatesList = ...
>   subroutine translate (distance) {set coordinatesList to translated
> version}
>   subroutine rotate (angle) {set coordinatesList to rotated version}
>   subroutine return () {return coordinatesList}
> 
>   if (no arg) {return coordinatesList}
>     else { apply arg to coordinatesList }
> }
> 
> In this way, one uses a_surface as a data, which comes with its owe set
> of functions:
> mySurface = a_surface();
> mySurface(rotate(angle));        // now the surface data has been
> rotated
> mySurface(translate(distance));  // now its translated
> newSurface = mySurface(return())
> 
> So now, a_surface is no longer viewed as a subroutine, but a boxed set
> of things centered around a piece of data. All functions that work on
> the data are included in the boxed set. This paradigm possible in
> functional languages has refined so much so that it spread to other
> groups and became known as Object Oriented Programing, and complete
> languages with new syntax catered to such scheme emerged.
> 
> In such languages, instead of writing them like this:
> mySurface = a_surface();
> mySurface(rotate(angle));
> 
> the syntax is changed to like this, for example:
> mySurface = new a_surface();
> mySurfaceRotated = mySurface.rotate(angle);
> 
> In such languages, the super subroutine a_surface is no longer called a
> function or subroutine. It is now called a ?Class?. And now the
> variable holding the function "mySurface = a_surface()" is now called a
> ?Object?. Subroutines inside the function a_surface() are no longer
> called inner-subroutines. They are called ?Methods?. The act of
> assigning a super-subroutine to a variable is called instantiation.
> 
> This style of programing and language have become so fanatical that in
> such dedicated languages like Java, everything in the language are
> ?Classes?. One can no longer just define a variable or subroutine.
> Instead, one creates these meta-subroutine ?Classes?. Everything
> one do are inside Classes. And one assign Classes inside these Classes
> to create ?Objects?. And one uses ?Methods? to manipulate
> Objects. In this fashion, even basic primitives like numbers, strings,
> and lists are no longer atomic entities. They are now Classes.
> 
> For example, in Java, a string is a class String. And inside the class
> String, there are Methods to manipulate strings, such as finding the
> number of chars, or extracting parts of the string. This can get very
> complicated. For example, in Java, there are actually two Classes of
> strings: One is String, and the other is StringBuffer. Which one to use
> depends on whether you intend to change the data.
> 
> So, a simple code like this in normal languages:
> a = "a string";
> b = "another one";
> c = join(a,b);
> print c;
> 
> or in lisp style
> (set a "a string")
> (set b "another one")
> (set c (join a b))
> (print c)
> 
> becomes in pure OOP languages:
> public class test {
>   public static void main(String[] args) {
>     String a = new String("a string");
>     String b = new String("another one");
>     StringBuffer c = new StringBuffer(40);
>     c.append(a); c.append(b);
>     System.out.println(c.toString());
>     }
> }
> 
> Here, the "new String" creates a String object. The "new
> StringBuffer(40)" creates the changeable string object StringBuffer,
> with room for 40 chars. "append" is a method of StringBuffer. It is
> used to join two Strings.
> 
> Notice the syntax "c.append(a)", which we can view it as calling a
> inner subroutine "append", on a super subroutine that has been assigned
> to c, where, the inner subroutine modifies the inner data by appending
> a to it.
> 
> And in the above Java example, StringBuffer class has another method
> "toString()" used to convert this into a String Class, necessary
> because System.out.println's parameter requires a String type, not
> StringBuffer.
> 
> For a example of the complexity of classes and methods, see the Java
> documentation for the StringBuffer class at
> http://java.sun.com/j2se/1.4.2/docs/api/java/lang/StringBuffer.html
> (local copy)
> 
> In the same way, numbers in Java have become a formalization of many
> classes: Double, Float, Integer, Long... and each has a bunch of
> "methods" to operate or convert from one to the other.
> 
> Instead of
> aNumber = 3;
> print aNumber^3;
> 
> In Java the programer needs to master the ins and outs of the several
> number classes, and decide which one to use. (and if a program later
> needs to change from one type of number to another, it is often
> cumbersome.)
> 
> This Object Oriented Programing style and dedicated languages (such as
> C++, Java) have become a fad like wild fire among the programing mass
> of ignoramuses in the industry. Partly because of the data-centric new
> perspective, partly because the novelty and mysticism of new syntax and
> jargonization.
> 
> It is especially hyped by the opportunist Sun Microsystems with the
> inception of Java, internet, and web applications booms around 1995. At
> those times, OOP (and Java) were thought to revolutionize the industry
> and solve all software engineering problems, in particular by certain
> "reuse of components" concept that was thought to come with OOP.
> 
> As part of this new syntax and purity, where everything in a program is
> of Classes and Objects and Methods, many complex issues and concept
> have arisen in OOP.
> 
> We now know that the jargon Class is originally and effectively just a
> boxed set of data and subroutines, all defined inside a subroutine. And
> the jargon "Object" is just a variable that has been set to this super
> subroutine. And the inner subroutines are what's called Methods.
> 
> ----------
> to be continued tomorrow.
> 
> This is part of an installment of the article
> ?What are OOP's Jargons and Complexities?
> by Xah Lee, 20050128. The full text is at
>  http://xahlee.org/Periodic_dosage_dir/t2/oop.html
> 
> ? Copyright 2005 by Xah Lee. Verbatim duplication of the complete
> article for non-profit purposes is granted.
> 
> The article is published in the following newsgroups:
> comp.lang.c,comp.lang.c++,comp.lang.lisp,comp.unix.programmer
> comp.lang.python,comp.lang.perl.misc,comp.lang.scheme,comp.lang.java.programmer
> comp.lang.functional,comp.object,comp.software-eng,comp.software.patterns
> 
>  Xah
>  xah at xahlee.org
> ? http://xahlee.org/
> 


From jstroud at mbi.ucla.edu  Tue May 10 14:06:30 2005
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Tue, 10 May 2005 11:06:30 -0700
Subject: Need a little parse help
In-Reply-To: <000901c55589$c6597880$6400a8c0@grondor>
References: <000901c55589$c6597880$6400a8c0@grondor>
Message-ID: <200505101106.30248.jstroud@mbi.ucla.edu>

Try

outputfile.write(words[1]+"\n")

On Tuesday 10 May 2005 10:57 am, Alex Nordhus wrote:
> outputfile.write(words[1])

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From jdc at uwo.ca  Mon May  9 16:17:15 2005
From: jdc at uwo.ca (Dan Christensen)
Date: Mon, 09 May 2005 16:17:15 -0400
Subject: global lists
In-Reply-To: <a8a62be605050803017c447138@mail.gmail.com>
References: <a8a62be605050803017c447138@mail.gmail.com>
Message-ID: <87acn4upbo.fsf@uwo.ca>

andrea crotti <kerny404 at gmail.com> writes:

> Hi everbybody again,
> I have a little "problem", I don't understand the reason of this:
>
> a = [10,1,2,3]
> def foo():
>   global a
>   for n in range(len(a)):
>     a[n] = a[n]*2

If I type the above, and then call foo, I get what looks like
reasonable output:

In [1]:a = [10,1,2,3]

In [2]:def foo():
   .2.:    global a
   .2.:    for n in range(len(a)):
   .2.:        a[n] = a[n]*2
   .2.:        

In [3]:foo()

In [4]:print a
[20, 2, 4, 6]

However, you didn't say what you expected, so I'm not sure what bug
I'm looking for!

Dan


From cfbolz at gmx.de  Mon May 23 13:26:14 2005
From: cfbolz at gmx.de (Carl Friedrich Bolz)
Date: Mon, 23 May 2005 19:26:14 +0200
Subject: first release of PyPy
In-Reply-To: <d6sn2f$18d$1@news.doit.wisc.edu>
References: <mailman.264.1116625088.8733.python-list@python.org>	<1116629407.638782.145950@g47g2000cwa.googlegroups.com>	<mailman.9.1116831944.18027.python-list@python.org>
	<d6sn2f$18d$1@news.doit.wisc.edu>
Message-ID: <42921236.7010509@gmx.de>

Rocco Moretti wrote:
> Alex Stapleton wrote:
> 
>>The question still remains, can it run it's self? ;)
>>

This allready worked in the past, though it doesn't at the moment.

> 
> 
> I think they try, every once in a while, to self host. The only problem 
> at this stage of the game is the ~2000x speed slowdown. Using that 
> figure, a five second startup time for PyPy on CPython would take about 
> 3 hours for PyPy on PyPy on CPython (5s*2000). Running a 1 second (on 
> CPython) Python program would take a month and a half for PyPy on PyPy 
> on CPython. (1s*2000*2000)
> 
> Once they get the speed issue licked, the self hosting problems should 
> be no trouble. ;)

Speed isn't even the biggest problem when running PyPy on itself. PyPy 
still 'fakes' some objects, e.g. borrows them from the underlying 
Python. This is mostly the case for things that have direct access to 
the OS, e.g. files. If you run PyPy on PyPy on CPython you try to fake 
the faked objects again, which gives trouble. Since we have to handle 
faked objects differently in the future anyway we decided that at the 
moment it isn't worth the effort to keep the self-hosting working.

Regards,

Carl Friedrich


From gandalf at geochemsource.com  Thu May 19 04:03:51 2005
From: gandalf at geochemsource.com (Laszlo Zsolt Nagy)
Date: Thu, 19 May 2005 10:03:51 +0200
Subject: EpyDoc problem
In-Reply-To: <1116446157.756809.97320@g49g2000cwa.googlegroups.com>
References: <428A5CAA.906@geochemsource.com>	<428A66A8.9090000@geochemsource.com>	<mailman.164.1116443342.8733.python-list@python.org>
	<1116446157.756809.97320@g49g2000cwa.googlegroups.com>
Message-ID: <428C4867.4050906@geochemsource.com>


>EpyDoc is hosted in Sourceforge. This alone may answer your question
>about a bug-tracker:
>
>http://sourceforge.net/tracker/?atid=405618&group_id=32455&func=browse
>  
>
Well, I wrote to the bug tracker some days ago but no answer so far.


From jepler at unpythonic.net  Wed May  4 12:21:09 2005
From: jepler at unpythonic.net (Jeff Epler)
Date: Wed, 4 May 2005 11:21:09 -0500
Subject: descriptor dilemma
In-Reply-To: <1115223258.624304.198900@f14g2000cwb.googlegroups.com>
References: <1115216416.700492.71020@f14g2000cwb.googlegroups.com>
	<1115223258.624304.198900@f14g2000cwb.googlegroups.com>
Message-ID: <20050504162108.GE14737@unpythonic.net>

On Wed, May 04, 2005 at 09:14:18AM -0700, S?bastien Boisg?rault wrote:
> 
> Yup ?!? Weird ... especially as:
> 
> >>> id(c.f) == id(C.__dict__['f'].__get__(c,C))
> True

Here, c.f is discarded by the time the right-hand-side of == is
executed.  So the object whose id() is being calculated on the
right-hand-side could turn out to be the same, since the two objects
have disjoint lifetimes.

Here are some more cases of the same thing:
>>> id([]) == id([])
1
>>> id([]) == id([1])
1

Jeff
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From phillip.watts at anvilcom.com  Wed May 18 12:05:26 2005
From: phillip.watts at anvilcom.com (phil)
Date: Wed, 18 May 2005 11:05:26 -0500
Subject: iso_8859_1 mystery/tkinter
Message-ID: <428B67C6.7000708@anvilcom.com>

These work fine on Linux
         s.const = {}
         s.const['DEG'] = '%c' % (0xb0)
         s.const['DIV'] = '%c' % (0xf7)
         s.const['ANG'] = '%c' % (0xd8)

On WinXP the symbols for division and angle work fine.
But the symbol for degrees, a little circle, produces
a vertical bar in Tkinter Text box or Canvas.

However, if I run from IDLE and output to a console
window, 0xb0 produces the correct character for degrees.
Any idea why?
Thanks



From philippe at philippecmartin.com  Sat May 14 14:46:25 2005
From: philippe at philippecmartin.com (Philippe C. Martin)
Date: Sat, 14 May 2005 18:46:25 GMT
Subject: A new to Python question
References: <1116088663.428932.130860@g43g2000cwa.googlegroups.com>
	<Dkqhe.1732$aM4.440@newssvr11.news.prodigy.com>
	<cqohl2-pj5.ln1@Bernd.Nawothnig.dialin.t-online.de>
Message-ID: <5Irhe.1553$sb5.144@newssvr12.news.prodigy.com>

Yes, I gathered.

We all get our habits from somewhere :-)

Regards,

Philippe

Bernd Nawothnig wrote:

> On 2005-05-14, Philippe C. Martin wrote:
> 
>> You're thinking you're passing the arguments as reference
> 
> That is the way Fortran handles them:
> 
> [...]
> 
>>> Right now I'm taking a simple program I wrote in Fortran
> 
> 
> 
> 
> Bernd
> 



From sjmachin at lexicon.net  Tue May 31 18:45:08 2005
From: sjmachin at lexicon.net (John Machin)
Date: Wed, 01 Jun 2005 08:45:08 +1000
Subject: The need to put "self" in every method
In-Reply-To: <mailman.296.1117557471.18027.python-list@python.org>
References: <1117554344.938440.54700@g14g2000cwa.googlegroups.com>
	<mailman.296.1117557471.18027.python-list@python.org>
Message-ID: <429CE8F4.5070301@lexicon.net>

Simon Brunning wrote:
> On 31 May 2005 08:45:45 -0700, Fernando M.
> <fernandomirandamuro at gmail.com> wrote:
> 
>>i was just wondering about the need to put "self" as the first
>>parameter in every method a class has because, if it's always needed,
>>why the obligation to write it?
> 
> 
> It doesn't need to be 'self'. You could use 'this', or 's', or whatever.
> 
> Of course, if you *don't* use 'self', you should expect an angly mob
> with pitchforks and torches outside your castle.
> 

Wouldn't an angly mob be carrying fishing rods?




From snobis at gmx.de  Mon May 16 12:37:24 2005
From: snobis at gmx.de (Stefan Nobis)
Date: Mon, 16 May 2005 18:37:24 +0200
Subject: Newbie : checking semantics
References: <1115503520.392357.230620@f14g2000cwb.googlegroups.com>
	<87d5rrsh7h.fsf@snobis.de>
	<pan.2005.05.16.13.58.07.671337@dalkescientific.com>
Message-ID: <87fywnuny3.fsf@snobis.de>

Andrew Dalke <dalke at dalkescientific.com> writes:

> When you say "beginners" is that people with no previous
> programming experience

>From time to time I teach some programming (in an institution
called "Volkshochschule" here in Germany -- inexpensive courses
for adults). My Python course is for absolute beginners with no
previous programming experience of any kind.

And yes, this people have quite some difficulties to get their
blocks indented right. Before Python I used C++ in this beginner
course and at least setting the boundaries for blocks was a little
less of a problem.

So I would appreciate optional statements to end a block
(indentation rules may be mandatory). This comes also very handy
in something like Python Server Pages of mod_python (where a
comment line to explicitly end a block is sometimes needed).

-- 
Stefan.


From jmdeschamps at cvm.qc.ca  Sun May 15 23:36:31 2005
From: jmdeschamps at cvm.qc.ca (jean-marc)
Date: 15 May 2005 20:36:31 -0700
Subject: PythonWin + Tkinter = broken relation with WindowsXP !?!?!
Message-ID: <1116214591.343470.213660@o13g2000cwo.googlegroups.com>

I read that Tkinter and Python IDEs (PythonWin and Idle at least) makes
for a bad mix in execution mode because they're fighting for the event
loop, but this mode is usefull to use the debugger.

But to the point of breaking something elsewhere than in memory ???
(Shutting down and rebooting the computer doesn't resolve the
problems... PythonWin becomes impossible to use if another window is
open (pdf files, winAmp music, browser et al...)

is this documented somewhere??? It's been happening quite a few times
to me (real bummer!).

NOTE: This situation seems to appear slowly...  Not like a works or
doesn't work situation but rather that corruption is progressive. This
is a complete mystery to me????

Thanks in advance,

JMD
Python 2.3.5, WinXP Pro SP2
I've started using Python Scripter, which seems less problematic (at
this point)



From frithiof.jensen at die_spammer_die.ericsson.com  Tue May 24 08:16:50 2005
From: frithiof.jensen at die_spammer_die.ericsson.com (Frithiof Andreas Jensen)
Date: Tue, 24 May 2005 14:16:50 +0200
Subject: SQL Query via python
References: <mailman.278.1116647826.8733.python-list@python.org><voqu81dankoi6ds7vm4n0e1h9c43s004mo@4ax.com><200505211500.06747.jeffelkins@earthlink.net>
	<mailman.305.1116740808.8733.python-list@python.org>
Message-ID: <d6v5vi$rgo$1@news.al.sw.ericsson.se>


"Jeff Elkins" <jeffelkins at earthlink.net> wrote in message
news:mailman.305.1116740808.8733.python-list at python.org...
> Just as an fyi:
>
> In one weekend I have gone from knowing zip about SQL/Python to
implementing
> code on my personal server that emails info to family about birthdays and
> such.

Actually - http://www.pythonweb.org/ will handle the SQL (and many other
tasks) in a much simpler way!

If you do try the web.database.object examples, be aware that the docs are
not entirely tracking the code; f.ex. databases have no "type" parameter;
it's an "adapter"

i.e.
connection = web.database.connect(type="sqlite",database="object-simple.db")
should be:
connection =
web.database.connect(adapter="sqlite",database="object-simple.db")'

there are probably others - it's good to see what the parameters are in
"idle" if something does not work as advertised.

Overall, Pythonweb is very impressive work IMO.






From michele.petrazzo at TOGLIunipex.it  Tue May 31 07:56:38 2005
From: michele.petrazzo at TOGLIunipex.it (Michele Petrazzo)
Date: Tue, 31 May 2005 13:56:38 +0200
Subject: sys.stderr and thread
Message-ID: <429c500c$0$15913$5fc30a8@news.tiscali.it>

I have a wxpython application (the main program) and a lot of external
modules (import mymodule) that use always 2 thread (one is my
application and one is twisted with new threadselectreactor).
Sometime when I close my app, I receive a thread error that I want to
redirect to a file (I don't know why this error occur, but this is
another problem...).
I use the redirection of stderr and stdout to a file

This work for all my application, work also for an exception that I
insert for try, but not for the thread error (when this occur). Is
there a solution for redirect all the messages?

This is the exception:

Unhandled exception in thread started by <bound method
Thread.__bootstrap of <Thread(Thread-1, stopped daemon)>>
Traceback (most recent call last):
   File "C:\Python23\lib\threading.py", line 451, in __bootstrap
     self.__stop()
   File "C:\Python23\lib\threading.py", line 460, in __stop
     self.__block.notifyAll()
   File "C:\Python23\lib\threading.py", line 256, in notifyAll
     self.notify(len(self.__waiters))
   File "C:\Python23\lib\threading.py", line 238, in notify
     currentThread() # for side-effect
TypeError: 'NoneType' object is not callable

Thanks,
Michele


From guettli at thomas-guettler.de  Thu May 26 10:03:28 2005
From: guettli at thomas-guettler.de (Thomas Guettler)
Date: Thu, 26 May 2005 16:03:28 +0200
Subject: converting jpg to pdf
References: <1117116021.652260.66260@g14g2000cwa.googlegroups.com>
Message-ID: <pan.2005.05.26.14.03.28.512967@thomas-guettler.de>

Am Thu, 26 May 2005 07:00:21 -0700 schrieb Raghul:

> Hi friends
>             Is it possible to convert jpg to pdf  in python. I need a
> program to convert jpg format file to pdf. Is there any sample or any
> library to do that? Pls guide me.


Hi,

import os
os.system("convert foo.jpg foo.pdf")

convert is part of ImageMagick.

 HTH,
    Thomas

-- 
Thomas G?ttler, http://www.thomas-guettler.de/




From geoffSPAMarnold at hotmail.com  Wed May 11 18:21:28 2005
From: geoffSPAMarnold at hotmail.com (Fletch)
Date: Wed, 11 May 2005 15:21:28 -0700
Subject: BluWater: God is not a man
In-Reply-To: <1115839435.018664.70230@f14g2000cwb.googlegroups.com>
References: <1115824563.613661.169620@g47g2000cwa.googlegroups.com>
	<1115839435.018664.70230@f14g2000cwb.googlegroups.com>
Message-ID: <d5u0h8$2i0$1@news1nwk.SFbay.Sun.COM>


Obaid R. wrote:
> For a detailed response to the claims of the poster please refer to the
> following.
> 
> [1] "Ron Grossi: God is not a man" an essay:
> http://groups-beta.google.com/group/microsoft.public.windowsxp.networ...
> 
> [2] "Ron Grossi: God is not a man" an entire thread:
> http://groups-beta.google.com/group/microsoft.public.windowsxp.networ...
> 
> Here is a quick quote showing the man at odds with none other than
> Christ, peace and blessings be upon him, (PBBUH) himself:
> 
> "Moreover, and on at least two occasions in
> the Bible, Christ PBBUH is explicitly
> proclaiming that he was sent only to the lost
> sheep of the house of Israel, not to anyone
> else of the Gentiles.
> 
> "But he answered and said, I am not sent but
> unto the lost sheep of the house of Israel."
> (Matthew 15: 24) (see also Matthew 10:6)."
> 

You clearly need to do more reading and learn that Jesus was not so short sighted or narrow of mind 
that He was not aware of the extent to which His teachings would be spread. Was it not Jesus who 
also said, preach the gospel to the whole world, make disciples of the whole world, which obviously 
includes Gentiles? And need I remind you of John 3:16? "For God so love the world (not just Israel), 
that He gave is only begotten Son that whosoever (fully inclusive of all humanity) believes in Him 
shall not perish but have everlasting life."

Clearly, you need to do more study of the scriptures to understand the depth of the message Jesus 
brought, not just for Israel, but the whole world, something He was quite clear was the function and 
purpose of His ministry.

As for Ron Gossi, well, we will simply say that he has been asked to cease and desist from these 
invasive spam posts as they do not reflect the nature of God, to stand at the door and knock, 
waiting to be invited in.

--fletch


From bj_666 at gmx.net  Mon May 16 16:18:17 2005
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: Mon, 16 May 2005 22:18:17 +0200
Subject: trouble with copy/deepcopy
References: <MSGID_2=3A5025=2F3.131_42890b9a@fidonet.org>
Message-ID: <pan.2005.05.16.20.18.16.225798@gmx.net>

In <MSGID_2=3A5025=2F3.131_42890b9a at fidonet.org>, Alexander Zatvornitskiy
wrote:

> class Distribution:
>   __gr_on_transp=dict()
>   __ostatok_m=dict()
> and so on

Those two dicts are *class variables* not *instance variables*!

> And, I want to make full copy of it:
> d1=Distribution()
> d2=copy.deepcopy(d1)
> 
> But, members-dictionaries are don't copied. For example if I will write:
> d1.clear()
> which clears all two dictionaries, I will find that d2's dictionaries are also
> empty!!!

That clears only one dictionary at class level.  Which is visible on both
instances.

class Distribution:
    def __init__(self):
        self.__gr_on_transp = dict()
        self.__ostatok_m = dict()
    ...

This creates *instance variables* which should be deepcopied without
problems.

Ciao,
	Marc 'BlackJack' Rintsch


From ivoras at _-_fer.hr  Wed May  4 17:17:32 2005
From: ivoras at _-_fer.hr (Ivan Voras)
Date: Wed, 04 May 2005 23:17:32 +0200
Subject: wxPython custom list drawing?
Message-ID: <d5be5o$6s2$1@bagan.srce.hr>

Does wxPython (actually, the wx toolkit) support setting up ListCtrls or 
similar to allow custom element drawing?

Something like generating an 'OnPaint()' event in which I could paint 
whatever I like in a listbox element. (example from some other toolkits)


From steven.bethard at gmail.com  Thu May 19 10:09:29 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Thu, 19 May 2005 08:09:29 -0600
Subject: help with generators
In-Reply-To: <1116494846.500522.31920@g47g2000cwa.googlegroups.com>
References: <1116461870.130411.9280@g43g2000cwa.googlegroups.com>
	<hd-dnbBAGZJPgxHfRVn-rA@comcast.com>
	<1116494846.500522.31920@g47g2000cwa.googlegroups.com>
Message-ID: <ItSdnRWoEIWHAxHfRVn-vA@comcast.com>

George Sakkis wrote:
> "Steven Bethard" wrote:
>
>>py> def bin(n):
>>...     s = []
>>...     def bin(n):
>>...         if n == 0:
>>...             yield s
>>...         else:
>>...             s.append(0)
>>...             for s1 in bin(n - 1):
>>...                 yield s1
>>...             s.pop()
>>...             s.append(1)
>>...             for s1 in bin(n - 1):
>>...                 yield s1
>>...             s.pop()
>>...     return bin(n)
>>...
[snip]
> A caveat of the implementation above: it yields the same instance (s),
> which is unsafe if the loop variable is modified (e.g. in the "for s in
> bin(n)" loop, s should not be modified). Moreover, each yielded value
> should be 'consumed' and then discarded; attempting to store it (as in
> list(bin(n))) references only the last yielded value.

Yup.  However, this was the most direct translation of the OP's original 
function (which also only had a single list).  Since the question was 
about how generators worked, I figured the most direct translation would 
probably be the most useful response.

> Here's a shorter, clear and safe implementation:
> 
> def bin2(n):
>     if n:
>         for tail in bin2(n-1):
>             yield [0] + tail
>             yield [1] + tail
>     else:
>         yield []

This is definitely the way I would have written it.

STeVe


From steven.bethard at gmail.com  Fri May  6 18:03:56 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Fri, 06 May 2005 16:03:56 -0600
Subject: min max of a list
In-Reply-To: <ANOdnZL8Q61cSebfRVn-jw@powergate.ca>
References: <1115245476.036508.273930@g14g2000cwa.googlegroups.com>
	<gaCdnf8Pf9xj7-TfRVn-tQ@comcast.com>
	<1115259992.558123.189580@g14g2000cwa.googlegroups.com>
	<temdnRBabsR2_effRVn-gg@comcast.com>
	<1115396805.064114.183010@f14g2000cwb.googlegroups.com>
	<JNCdnYvdNOGEJ-bfRVn-vQ@comcast.com>
	<1115408190.437054.222350@z14g2000cwz.googlegroups.com>
	<ANOdnZL8Q61cSebfRVn-jw@powergate.ca>
Message-ID: <IKmdnZ8LfpZWdObfRVn-jg@comcast.com>

Peter Hansen wrote:
> querypk at gmail.com wrote:
> 
>> I get a syntax error in  :
>>
>>  py> [(min((abs(p - v), v) for v in valleys + [0] if v < p)[1],
>> ...   p,
>> ...   min((abs(p - v), v) for v in valleys if v > p)[1])
>> ...  for p in peaks]
> 
> 
> I think we already covered the part where you were using an older 
> version of Python.  In this case, the missing feature is "generator 
> expressions" and they are inside the two min() calls.
> 
> You might want to consider upgrading...

But if you can't, you should write this as something like:

[(min([(abs(p - v), v) for v in valleys + [0] if v < p])[1],
   p,
   min([(abs(p - v), v) for v in valleys if v > p])[1])
  for p in peaks]

Note the extra brackets in the min calls.

STeVe


From borges2003xx at yahoo.it  Tue May 31 09:31:32 2005
From: borges2003xx at yahoo.it (borges2003xx at yahoo.it)
Date: 31 May 2005 06:31:32 -0700
Subject: regular expression problem
In-Reply-To: <1117529673.000965.321770@g49g2000cwa.googlegroups.com>
References: <1117527562.055872.93830@o13g2000cwo.googlegroups.com>
	<1117529673.000965.321770@g49g2000cwa.googlegroups.com>
Message-ID: <1117546292.578437.298070@g47g2000cwa.googlegroups.com>

thank you again:
i used list and not  set because order in my list is important.
in fact i'd like to apply this function to strings (or ordered
sequences of data).
 For this reason proposed to use regular expression.
best regards.



From ptmcg at austin.rr.com  Sat May 28 01:29:17 2005
From: ptmcg at austin.rr.com (Paul McGuire)
Date: 27 May 2005 22:29:17 -0700
Subject: regexp for sequence of quoted strings
References: <1117050058.836444.189460@o13g2000cwo.googlegroups.com>
	<yfs64x7xby7.fsf@black4.ex.ac.uk>
	<1117058353.702619.179010@z14g2000cwz.googlegroups.com>
	<1117221696.053591.152710@g44g2000cwa.googlegroups.com>
Message-ID: <1117258157.381526.16770@g49g2000cwa.googlegroups.com>

George -

Thanks for your enthusiastic endorsement!

Here are some quibbles about your pyparsing grammar (but really, not
bad for a first timer):
1. The Word class is used to define "words" or collective groups of
characters, by specifying what sets of characters are valid as leading
and/or body chars, as in:
  integer = Word(digitsFrom0to9)
  firstName = Word(upcaseAlphas, lowcaseAlphas)
In your parser, I think you want the Literal class instead, to match
the literal string '{'.

2. I don't think there is any chance to confuse a withQuotes with a
withoutQuotes, so you can try using the "match first" operator '|',
rather than the greedy matching "match longest" operator '^'.

3. Lastly, don't be too quick to use asList() to convert parse results
into lists - parse results already have most of the list accessors
people would need to access the returned matched tokens.  asList() just
cleans up the output a bit.

Good luck, and thanks for trying pyparsing!
-- Paul



From dalke at dalkescientific.com  Mon May  2 12:33:54 2005
From: dalke at dalkescientific.com (Andrew Dalke)
Date: Mon, 02 May 2005 16:33:54 GMT
Subject: lists in cx_Oracle
References: <pan.2005.04.05.18.44.52.434578@dalkescientific.com>
	<pan.2005.04.30.17.02.16.988085@dalkescientific.com>
	<1115047620.602263.180780@o13g2000cwo.googlegroups.com>
Message-ID: <pan.2005.05.02.16.33.57.959347@dalkescientific.com>

infidel wrote:

> Something like this might work for you:
> 
>>>> ids= ['D102', 'D103', 'D107', 'D108']
>>>> in_clause = ', '.join([':id%d' % x for x in xrange(len(ids))])
>>>> sql = "select * from tablename where id in (%s)" % in_clause
>>>> import cx_Oracle as ora
>>>> con = ora.connect('foo/bar at geewhiz')
>>>> cur = con.cursor()
>>>> cur.execute(sql, ids)

That's pretty much what I did but it seems inelegant.
I would rather do

  ids = ['D102', 'D103', 'D107', 'D108']
   .. connect and set up the cursor ..
  cursor.execute("select * from tablename where id in :ids", ids)

and if 'ids' is seen to be a list or tuple then it does
the appropriate conversion.  (I'm also fine with having
to use ()s in the SQL query, as in "id in (:ids)".)

The lack of a simple way to do this is error prone. I've seen
people do

  cursor.execute("select * from tablename where id in (%s)" % repr(ids))

because the repr of a string is close enough that it works
for expected string values.  But it opens up the possibility
of SQL injection problems.

				Andrew
				dalke at dalkescientific.com
 


From iker at research.att.com  Tue May 17 13:34:29 2005
From: iker at research.att.com (Iker Arizmendi)
Date: Tue, 17 May 2005 17:34:29 GMT
Subject: Adding "proxy" functions to a type
Message-ID: <428A2B25.9010409@research.att.com>

Hello all.

Is there a convenient scheme within a C extension to add
methods to a type in such a way as to allow me to
transparently add a "proxy" around them? For example:

     typedef PyObject* (*PyMethodCall)(PyObject*, PyObject*);

     PyObject* middleMan(PyObject* self, PyObject* args) {
         printf("Before call to wrapped funct\n");
         PyMethodCall actualFunc = getRealFunction(...);
         PyObject* retval = actualFunc(self, args);
         printf("After call to wrapped func\n");
         return retval;
     }

     void addMethod(PyTypeObject* t, PyMethodCall* m,
                    char* name, char* doc) {
         // code to forward calls to "middleMan" while putting the
         // pointer to "m" somewhere convenient
         ...
     }

My current solution is cumbersome and involves adding a
special field to the PyObject associated with my type, a
custom tp_getattro function and the "middleMan" function:

     struct MyPyObj {
         PyObject_HEAD
         PyMethodCall realfunc;
     };

     // when adding the method def for "m" instead of pointing it to
     // the given function, I point it to the middle man and save
     // the "m" function somewhere I can find it later.
     void addMethod(PyTypeObject* t, PyMethodCall m,
                    char* name, char* doc) {

         PyMethodDef* def = allocPyMethodDef(t, name);
         def->ml_name = name;
         def->ml_doc = doc;
         def->ml_meth = middleMan;
         def->ml_flags = METH_VARARGS;

         saveTargetFunction(name, m);
         // note I add these here so that documentation is
         // available within the interpreter
         PyObject* methobj = PyDescr_NewMethod(t, def);
         PyDict_SetItemString(t->tp_dict, def->ml_name, methobj);
         Py_DECREF(methobj);
     }

     // when the interpreter does a lookup on an instance of my
     // type I set the "realfunc" member of my PyObject and return
     // a bound method (which will call into middleMan).
     PyObject* customGetaAttro(PyObject* self, PyObject* name) {
         MyPyObj* rself = (MyPyObj*)self;
         rself->realfunc = findSavedTargetFunc(name);
         PyMethodDef* mdef = getMethodDef(self->ob_type, name);
         return PyCFunction_New(def, self);
     }

     // finally, when the middle man is called it extracts the "real"
     // function from self and calls that.
     PyObject* middleMan(PyObject* self, PyObject* args) {
         MyPyObj* rself = (MyPyObj*)(self);
         printf("pre call\n");
         PyObject* rv = rself->realfunc(rself->obj, args);
         printf("post call\n");
         rself->realfunc = 0;
         return rv;
     }

The problem here is that this doesn't work for static functions which
lack a self argument, or for module level functions.

Is there a better way?

Thanks,
Iker Arizmendi





From tim.peters at gmail.com  Tue May 17 12:39:58 2005
From: tim.peters at gmail.com (Tim Peters)
Date: Tue, 17 May 2005 12:39:58 -0400
Subject: processing a Very Large file
In-Reply-To: <118k530sl6kve5c@corp.supernews.com>
References: <118k530sl6kve5c@corp.supernews.com>
Message-ID: <1f7befae05051709396590e224@mail.gmail.com>

[DJTB]
> I'm trying to manually parse a dataset stored in a file. The data should be
> converted into Python objects.
>
> Here is an example of a single line of a (small) dataset:
> 
> 3 13 17 19 -626177023 -1688330994 -834622062 -409108332 297174549 955187488 589884464 -1547848504 857311165 585616830 -749910209 194940864 -1102778558 -1282985276 -1220931512 792256075 -340699912 1496177106 1760327384 -1068195107 95705193 1286147818 -416474772 745439854 1932457456 -1266423822 -1150051085 1359928308 129778935 1235905400 532121853
> 
> The first integer specifies the length of a tuple object. In this case, the
> tuple has three element: (13, 17, 19)
> The other values (-626177023 to 532121853) are elements of a Set.
>
> I use the following code to process a file:
> 
> from time import time
> from sets import Set
> from string import split

Note that you don't use string.split later.

> file = 'pathtable_ht.dat'
> result = []
> start_time = time ()
> f=open(file,'r')
> for line in f:
>        splitres = line.split()

Since they're all integers, may as well:

        splitres = map(int, line.split())

here and skip repeated int() calls later.

>        tuple_size = int(splitres[0])+1
>        path_tuple = tuple(splitres[1:tuple_size])
>        conflicts = Set(map(int,splitres[tuple_size:-1]))

Do you really mean to throw away the last value on the line?  That is,
why is the slice here [tuple_size:-1] rather than [tuple_size:]?

>        # do something with 'path_tuple' and 'conflicts'
>        # ... do some processing ...
>        result.append(( path_tuple, conflicts))
>
> f.close()
> print time() - start_time
> 
> The elements (integer objects) in these Sets are being shared between the
> sets, in fact, there are as many distinct element as there are lines in the
> file (eg 1000 lines -> 1000 distinct set elements). AFAIK, the elements are
> stored only once and each Set contains a pointer to the actual object

Only "small" integers are stored uniquely; e.g., these aren't:

>>> 100 * 100 is 100 * 100
False
>>> int("12345") is int("12345")
False

You could manually do something akin to Python's "string interning" to
store ints uniquely, like:

    int_table = {}
    def uniqueint(i):
        return int_table.setdefault(i, i)

Then, e.g.,

>>> uniqueint(100 * 100) is uniqueint(100 * 100) 
True
>>> uniqueint(int("12345")) is uniqueint(int("12345"))
True

Doing Set(map(uniqueint, etc)) would then feed truly shared int
(and/or long) objects to the Set constructor.

> This works fine with relatively small datasets, but it doesn't work at all
> with large datasets (4500 lines, 45000 chars per line).

Well, chars/line doesn't mean anything to us.  Knowing # of set
elements/line might help.  Say there are 4500 per line.  Then you've
got about 20 million integers.  That will consume at least several 100
MB if you don't work to share duplicates.  But if you do so work, it
should cut the memory burden by a factor of thousands.

> After a few seconds of loading, all main memory is consumed by the Python
> process and the computer starts swapping. After a few more seconds, CPU
> usage drops from 99% to 1% and all swap memory is consumed:
>
> Mem:    386540k total,   380848k used,     4692k free,      796k buffers
> Swap:   562232k total,   562232k used,        0k free,    27416k cached
>
> At this point, my computer becomes unusable.
>
> I'd like to know if I should buy some more memory (a few GB?) or if it is
> possible to make my code more memory efficient.

See above for the latter.  If you have a 32-bit processor, you won't
be able to _address_ more than a few GB anyway.  Still, 384MB of RAM
is on the light side these days <wink>.


From python at rcn.com  Thu May 26 05:32:31 2005
From: python at rcn.com (Raymond Hettinger)
Date: 26 May 2005 02:32:31 -0700
Subject: Checking for a full house
References: <1117071824.882035.250710@g49g2000cwa.googlegroups.com>
	<1117085950.739186.14240@z14g2000cwz.googlegroups.com>
	<1117086974.854184.5930@g43g2000cwa.googlegroups.com>
	<7x8y22v76i.fsf@ruckus.brouhaha.com>
	<5Cele.101369$Sd5.6145133@phobos.telenet-ops.be>
Message-ID: <1117099951.524496.232130@f14g2000cwb.googlegroups.com>

[Benedict]
>> It would be interesting to see how complicated it would get to write
>> code to detect the correct hands in poker with wildcards included.

There is an interesting SF project with code written in C:
    http://pokersource.sourceforge.net/

In contrast, Python makes short work of these kind of problems.  Here
are some primitives to get you started (just add a representation for
suits, flush detection, and controlling logic for ranking hands):

def is_straight(hand, numwildcards=0):
    """Checks for a five card straight

    Inputs: list of non-wildcards plus wildcard count
        2,3,4, ... 10, 11 for Jack, 12 for Queen,
        13 for King, 14 for Ace
        Hand can be any length (i.e. it works for seven card games).

    Outputs:  highest card in a five card straight
              or 0 if not a straight.
        Original list is not mutated.
        Ace can also be a low card (i.e. A2345).

    >>> is_straight([14,2,3,4,5])
    5
    >>> is_straight([14,2,3,4,6])
    0
    >>> is_straight([10,11,12,13,14])
    14
    >>> is_straight([2,3,5], 2)
    6
    >>> is_straight([], 5)
    14
    >>> is_straight([2,4,6,8,10], 3)
    12
    >>> is_straight([2,4,4,5,5], 2)
    6
    """

    hand = set(hand)
    if 14 in hand:
        hand.add(1)
    for low in (10,9,8,7,6,5,4,3,2,1):
        needed = set(range(low, low+5))
        if len(needed & hand) + numwildcards >= 5:
            return low+4
    return 0



def groups(hand, numwildcards=0):
    """Checks for pairs, threes-of-kind, fours-of-a-kind,
       and fives-of-a-kind

    Inputs: list of non-wildcards plus wildcard count
        2,3,4, ... 10, 11 for Jack, 12 for Queen,
        13 for King, 14 for Ace
        Hand can be any length (i.e. it works for seven card games)
    Output: tuple with counts for each value (high cards first)
        for example (3, 14), (2, 11)  full-house Aces over Jacks
        for example (2, 9), (2, 7)    two-pair Nines and Sevens
    Maximum count is limited to five (there is no seven of a kind).
    Original list is not mutated.

    >>> groups([11,14,11,14,14])
    [(3, 14), (2, 11)]
    >>> groups([7, 9, 10, 9, 7])
    [(2, 9), (2, 7)]
    >>> groups([11,14,11,14], 1)
    [(3, 14), (2, 11)]
    >>> groups([9,9,9,9,8], 2)
    [(5, 9), (2, 8)]
    >>> groups([], 7)
    [(5, 14), (2, 13)]
    """

    result = []
    counts = [(hand.count(v), v) for v in range(2,15)]
    for c, v in sorted(counts, reverse=True):
        newcount = min(5, c + numwildcards) # Add wildcards upto five
        numwildcards -= newcount - c        # Wildcards remaining
        if newcount > 1:
            result.append((newcount, v))
    return result



import doctest
print doctest.testmod()



From greg at invalid.invalid  Sat May 14 03:41:20 2005
From: greg at invalid.invalid (Greg Krohn)
Date: Sat, 14 May 2005 07:41:20 GMT
Subject: pygame on win32,  image.fromstring()
In-Reply-To: <bXdhe.215$h86.142@tornado.socal.rr.com>
References: <bXdhe.215$h86.142@tornado.socal.rr.com>
Message-ID: <AYhhe.379$X92.275@newsread2.news.pas.earthlink.net>

tlviewer wrote:
> hello,

hi

> fp = open( "e:/batch/python/aceclub.bmp", "wt")

wt? Should this be wb?

> # gives: ValueError: String length does not equal format and resolution size
> img = gm.image.fromstring(str,(71,96),"P")

The pygame docs say "P" is for 8bit pallete indices. When I look at the
properties of aceclub.bmp, Windows says it's Bit Depth is 4. I'm not sure if
they're talking about the same thing, though. If so, you could probably use PIL
to convert the depth.

-greg


From sjmachin at lexicon.net  Wed May 25 00:24:55 2005
From: sjmachin at lexicon.net (John Machin)
Date: Wed, 25 May 2005 14:24:55 +1000
Subject: Counting occurences of words in a list of strings
In-Reply-To: <YxRke.10544$on1.9738@clgrps13>
References: <YxRke.10544$on1.9738@clgrps13>
Message-ID: <4293fe18@news.eftel.com>

Travers Naran wrote:
> Here's the basic idea.  I have a dictionary of substrings (the 
> substrings stored as keys).  I have a list of strings.  I want to find 
> out, for each word in the dictionary, how many times the substring 
> occurs non-overlapping occurrences there are in the list of strings.  
> This is the best I could come up with:
> 
>         for j in self.dict.keys():
>             c = 0
>             for i in tc.strings:
>                 c += i.count(j)
>             self.dict[j]['count'] += c
> 
> I tried Boyer-Moore-Horspool as someone else suggested in the group, but 
> it was even slower (probably because of the time spent setting up the 
> pattern).  Even when I split the algorithm in two, doing the set-up 
> before the inner loop and only testing the pattern in the inner loop, it 
> was still slow.

Are you comparing BMH implemented in Python with str.count() implemented 
in C?

> 
> So, am I doing this the optimal way or am I overlooking something 
> _really_ simple to do?
> 
> Statistics on the data:
> The dictionary has 3000+ entries in it.
> There are several thousand strings.
> The strings average 10-26 characters in length.

1. A pure Python suggestion:

Presuming there is a character SEP that cannot appear in the keys in 
your query dictionary, try this:

SEP = '\n' # for example
big_string_count = SEP.join(tc.strings).count
for query_key in self.dict.keys():
     self.dict[query_key]['count'] += big_string_count(query_key)

Why do we have += in the above line? Is there anything else being added 
in by not-shown code? If not, the following would be much more 
comprehensible, and faster:

self.dict_count = {}
SEP = '\n' # for example
big_string_count = SEP.join(tc.strings).count
for query_key in self.dict.keys():
     self.dict_count[query_key] = big_string_count(query_key)

Checking your requirements for "non-overlapping": if you have 'foobar' 
and 'barzot' in the dictionary, and a string contains 'foobarzot', your 
code will count 1 for 'foobar' and 1 for 'barzot'. Is that OK?

2. Next, if you don't mind using a C-extension, look at Danny Yoo's 
ahocorasick module, which will search in parallel for your 3000+ keys.

http://hkn.eecs.berkeley.edu/~dyoo/python/ahocorasick/

Under one definition of non-overlapping, you will be able to use one of 
the findall methods; under the other definition, you will need to use 
one of the search methods and restart at (matched_position + 1).

3. If you want to roll your own, start with Gonzalo Navarro's 
publications: http://www.dcc.uchile.cl/~gnavarro/subj-multiple.html

HTH,
John




From pcolsen at comcast.net  Sun May  1 09:18:27 2005
From: pcolsen at comcast.net (Engineer)
Date: 1 May 2005 06:18:27 -0700
Subject: Python interpreter in Basic or a Python-2-Basic translator.
Message-ID: <1114953507.031865.244920@g14g2000cwa.googlegroups.com>

I'm looking for a Python interpreter written in BASIC, preferably
Visual Basic, and one written in VBA would be best of all.  An
alternative would be a Python-2-Basic compiler.

Unfortunately I have to develop some special purpose code in an
organization where my only development environment is Microsoft Office
Visual Basic for Applications.

The security 'droids have decided that since the MS Office Suite is a
"standard" application then software written in MS Office VBA must be
"safe."  Any other development environments (such as Java, Perl,
Cygwin) are "unsafe" and can't be installed.

The result is that any software I write must be bootstrapped from MS
Office VBA.

So, if I want Python, I need a Python interpreter in VBA.

If you respond, please send a copy to pcolsen at comcast.net



From tim.tadh at gmail.com  Mon May  2 22:47:15 2005
From: tim.tadh at gmail.com (Tim Henderson)
Date: 2 May 2005 19:47:15 -0700
Subject: Inspect Python Classes for instance data information
In-Reply-To: <1115081401.464719.142070@o13g2000cwo.googlegroups.com>
References: <1115081401.464719.142070@o13g2000cwo.googlegroups.com>
Message-ID: <1115088435.807539.274020@o13g2000cwo.googlegroups.com>

Thanks to both of you. Now that I know the correct terminology for what
I want to do, I can detirmine the best way to do it. I am not sure if
meta-classing is the simplist solution to this problem, however it can
be the most elegant. When I have a final implimintation of this project
it will be posted.

cheers

Tim Henderson



From steven.bethard at gmail.com  Sun May 15 00:49:18 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Sat, 14 May 2005 22:49:18 -0600
Subject: Exception question
In-Reply-To: <mailman.6.1116126375.15315.python-list@python.org>
References: <mailman.6.1116126375.15315.python-list@python.org>
Message-ID: <wcSdnXpkc7hRSRvfRVn-pg@comcast.com>

Ron Adam wrote:
> 
> Do exceptions that take place get stored in a stack or list someplace?
[snip]
> I know I can catch the error and store it myself with,
> 
>     except Exception, exc:
> 
> or possibly,
> 
>     errlist = []
>     errlist.append(sys.exc_info())
> 
> But what I want to know is does the interpreter do that in any way?  And 
> if so, can I access it?

No, but there's been some recent talk about having it do so:

http://mail.python.org/pipermail/python-dev/2005-May/053672.html

If that happens though, it's not likely to show up before Python 3.0. 
Too backwards incompatible to do now.  It also seems that the exact 
semantics haven't yet been agreed upon.

STeVe


From jrastrick at student.usyd.edu.au  Thu May  5 12:59:53 2005
From: jrastrick at student.usyd.edu.au (Jordan Rastrick)
Date: 5 May 2005 09:59:53 -0700
Subject: dictionary comparison
In-Reply-To: <1115306371.818120.150340@f14g2000cwb.googlegroups.com>
References: <1115306371.818120.150340@f14g2000cwb.googlegroups.com>
Message-ID: <1115312393.514506.77600@z14g2000cwz.googlegroups.com>

rickle wrote:
> I'm trying to compare sun patch levels on a server to those of what
sun
> is recommending.  For those that aren't familiar with sun patch
> numbering here is a quick run down.
>
> A patch number shows up like this:
> 113680-03
> ^^^^^^ ^^
> patch#  revision
>
> What I want to do is make a list.  I want to show what server x has
> versus what sun recommends, and if the patch exists, but the revision
> is different, I want to show that difference.
>
> Here are some sample patches that sun recommends:
> 117000-05
> 116272-03
> 116276-01
> 116278-01
> 116378-02
> 116455-01
> 116602-01
> 116606-01
>
> Here are some sample patches that server x has:
> 117000-01
> 116272-02
> 116272-01
> 116602-02
>
> So there are some that are the same, some that sun recommends that
> server x doesn't have, and some where the patch is the same but the
> revision is different.
>
> I've thrown the data into dictionaries, but I just can't seem to
figure
> out how I should actually compare the data and present it.  Here's
what
> I have so far (the split is in place because there is actually a lot
> more data in the file, so I split it out so I just get the patch
number
> and revision).  So I end up with (for example) 116272-01, then split
so
> field[0] is 116272 and field[1] is 01.
>
> def sun():
>         sun = open('sun-patchlist', 'r')
>         for s in sun:
>                 sun_fields = s.split(None, 7)
>                 for sun_field in sun_fields:
>                         sun_field = sun_field.strip()
>                 sun_patch = {}
>                 sun_patch['number'] = sun_fields[0]
>                 sun_patch['rev'] = sun_fields[1]
>                 print sun_patch['number'], sun_patch['rev']
>         sun.close()
>
> def serverx():
>         serverx = open('serverx-patchlist', 'r')
>         for p in serverx:
>                 serverx_fields = p.split(None, 7)
>                 for serverx_field in serverx_fields:
>                         serverx_field = serverx_field.strip()
>                 serverx_patch = {}
>                 serverx_patch['number'] = serverx_fields[0]
>                 serverx_patch['rev'] = serverx_fields[1]
>                 print serverx_patch['number'], serverx_patch['rev']
>         serverx.close()
>
> if __name__=='__main__':
>         sun()
>         serverx()
>
>
> Right now I'm just printing the data, just to be sure that each
> dictionary contains the correct data, which it does.  But now I need
> the comparison and I just can't seem to figure it out.  I could
> probably write this in perl or a shell script, but I'm trying really
> hard to force myself to learn Python so I want this to be a python
> script, created with only built-in modules.
>
> Any help would be greatly appreciated,
> Rick

Well, it seems that what youre asking is more of a generic programming
question than anything specific to Python - if you can think of how
you'd solve this in Perl, for example, then a Python solution along the
same lines would work just as well. I'm not sure if there was some
specific issue with Python that was confusing you - if so, perhaps you
could state it more explicitly.

To address the problem itself, there are a few things about your
approach in the above code that I find puzzling. First of all, the
sun() and servex() functions are identical, except for the name of the
file they open. This kind of code duplication is bad practice, in
Python, Perl, or any other language (even Shell scripting perhaps,
although I wouldn't really know) - you should definitely use a single
function that takes a filename as an argument instead.

Second, you are creating a new dictionary inside every iteration of the
for loop, one for every patch in the file; each dictionary you create
contains one patch number and one revision number. This data is
printed, and thereafter ignored (and thus will be consumed by Python's
Garbage Collector.) Hence youre not actually storing it for later use.
I don't know whether this was because you were unsure how to proceed to
the comparing the two datasets; however I think what you probably
wanted was to have a single dictionary, that keeps track of all the
patches in the file. You need to define this outside the for loop; and,
if you want to use it outside the body of the function, you'll need to
return it. Also, rather than have a dictionary of two values, keyed by
strings, I'd suggest a dictionary mapping patch numbers to their
corresponding revision numbers is what you want.

Once you've got two dictionaries - one for the list for the servers
patches, and one for Sun's recommended patches - you can compare the
two sets of data by going through the Sun's patches, checking if the
server has that patch, and if so, caluclating the difference in
revision numbers.

So heres a rough idea of how I'd suggest modifying what you've got to
get the intended result:

def patchlevels(filename):
    patchfile = open(filename, 'r')
    patch_dict = {}
    for line in patchfile:
        fields = line.split(None, 7)
        for field in fields:
            field = field.strip()
        number = fields[0]
        rev = fields[1]
        patch_dict[number] = rev
        # print number, patch_dict[number]
    patchfile.close()
    return patch_dict

if __name__=='__main__':
    sun = patchlevels('sun-patchfile')
    serverx = patchlevels('serverx-patchfile')
    print "Sun recommends:\t\t", "Server has:\n"
    for patch in sun:
        if patch in serverx:
            rev = serverx[patch]
            diff = int(rev) - int(sun[patch])
            serverhas = "Revision: %s Difference: %s" % (rev, diff)
        else:
            serverhas = "Does not have this patch"
        print patch, sun[patch], "\t\t", serverhas

I've tried to stay as close to your code as possible and not introduce
new material, although I have had to use the inbuilt function int to
convert the revision numbers from strings to integers in order to
subtract one from the other; also, I used C printf-style string
formatting on the line after. I hope its reasonably obvious what these
things do.

For the sample data you gave, this outputs:

Sun recommends:		Server has:

116276 01 		Does not have this patch
116378 02 		Does not have this patch
116272 03 		Revision: 01 Difference: -2
116278 01 		Does not have this patch
116602 01 		Revision: 02 Difference: 1
116606 01 		Does not have this patch
116455 01 		Does not have this patch
117000 05 		Revision: 01 Difference: -4

Here negative differences mean the server's version of the patch is out
of date, whereas positive differences mean its as recent as Sun's
recommendation or better. You could change the nature of the output to
whatever your own preference is easily enough. Or, if you want store
the data in some other structure like a list for further processing,
instead of just printing it, thats also pretty simple to do.

This code isn't exactly a work of art, I could have put more effort
into a sensible name for the function and variables, made it more
'pythonic' (e.g. by using a list-comprehension in place of the
whitespace stripping for loop ), etc; but I think it achieves the
desired result, or something close to it, right?

Let me know if I was on completely the wrong track.



From uval at rz.uni-karlsruhe.de  Tue May 17 07:06:03 2005
From: uval at rz.uni-karlsruhe.de (=?ISO-8859-1?Q?Daniel_Sch=FCle?=)
Date: Tue, 17 May 2005 13:06:03 +0200
Subject: \r functionality
In-Reply-To: <1116325048.303756.222070@z14g2000cwz.googlegroups.com>
References: <1116325048.303756.222070@z14g2000cwz.googlegroups.com>
Message-ID: <d6chni$8io$1@news2.rz.uni-karlsruhe.de>

Jake wrote:
> in c and c++ there is a useful way to refresh an output line in printf
> and cout using \r meta command. So for example in the wget application
> the progress of the download is updated on the same output line of the
> screen. From an intital investigation python seems to lack this. Is
> this correct?
> 

 >>> print "a\rb"
b
 >>>



From mwm at idiom.com  Thu May 26 09:14:50 2005
From: mwm at idiom.com (Mike Meyer)
Date: 26 May 2005 06:14:50 -0700
Subject: Python Impact Analysis Tool ?
References: <1117027674.787033.113730@f14g2000cwb.googlegroups.com>
	<200505251520.54697.hancock@anansispaceworks.com>
	<mailman.110.1117053764.18027.python-list@python.org>
	<1117111596.183489.201240@o13g2000cwo.googlegroups.com>
Message-ID: <5jfywaw2lx.fsf@idiom.com>

dcolford2000 at hotmail.com writes:
> I am a mainframe designer/progrmmer. What I need is a tool that shows
> me at design time what links to what so that I can understand the
> application. When a design change comes through I could say OK this
> change affects only A, B, and C out of the whole alphanet. Then I would
> be able to isolate what needs to be changed and unit tested..I am
> trying to improve programmer productivity at design time.

Take as look at PyUMLGraph. That should narrow it down to classes.

        <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From apardon at forel.vub.ac.be  Tue May  3 09:49:15 2005
From: apardon at forel.vub.ac.be (Antoon Pardon)
Date: 3 May 2005 13:49:15 GMT
Subject: sorting list and then return the index of the sorted item
References: <1115127433.984686.99060@f14g2000cwb.googlegroups.com>
Message-ID: <slrnd7f0ap.o1c.apardon@rcpc42.vub.ac.be>

Op 2005-05-03, custard_pie schreef <ckwiguno at gmail.com>:
> I need help sorting a list...I just can't figure out how to sort a list
> and then return a list with the index of the sorted items in the list
> for example if the list I want to sort is [2,3,1,4,5]
> I need [2,0,1,3,4] to be returned
> Can someone help please....
>

Something like this:

>>> lst = [2,3,1,4,5]
>>> inx = range(len(lst))
>>> inx.sort(lambda x,y: lst[x] - lst[y])
>>> print inx
[2, 0, 1, 3, 4]

-- 
Antoon Pardon



From dalke at dalkescientific.com  Tue May 24 17:13:27 2005
From: dalke at dalkescientific.com (Andrew Dalke)
Date: Tue, 24 May 2005 21:13:27 GMT
Subject: searching substrings with interpositions
References: <1116926253.186047.195260@g43g2000cwa.googlegroups.com>
	<3fgekjF7lq3qU1@individual.net>
	<1116939594.958040.14110@z14g2000cwz.googlegroups.com>
	<3fh2leF7mbtfU1@individual.net>
Message-ID: <pan.2005.05.24.21.13.24.717279@dalkescientific.com>

Claudio Grondi wrote:
> Note: code below is intended to help to clarify things only,
> so that a bunch of examples can be tested.
> If you need bugfree production quality code, maybe
> someone else can provide it.

Still not tested enough to ensure that it's bug free, but more
concise.  Here's one the implements the algorithm directly and
another that uses a regexp.  The latter should be the preferred
approach.  My intent was that the algorithm implements the given
pattern so they should given identical results.

# Doing the work ourselves
def find_spread_substring(query, target, limit = None):
    stack = []
    ti = qi = 0
    Nq = len(query)
    Nt = len(target)
    delta = 0

    while ti < Nt:
        # We have a match
        if query[qi] == target[ti]:
            stack.append( (qi, ti, delta) )
            qi = qi + 1
            if qi == Nq:
                return [ti for (qi, ti, delta) in stack]
            ti = ti + 1
            delta = 0
        else:
            # No match
            while 1:
                # If we have a partial match, check if we've
                # gone over the limit.
                if stack:
                    delta = delta + 1
                if limit is not None and delta > limit:
                    # backtrack, treating it as an invalid match
                    # (so retry this 'else:' block)
                    qi, ti, delta = stack.pop()
                    continue
                # No backtracking needed
                break
            # Advance to check the next character in the target
            ti = ti + 1

    # Failure
    return None

# Using regular expressions
import re
def find_spread_substring2(query, target, limit = None):
    if limit is None:
        template = "(%s).*?"
    else:
        template = "(%%s).{,%d}?" % (limit,)
    terms = [template % c for c in query]
    pattern = "".join(terms)

    pat = re.compile(pattern)
    m = pat.search(target)
    if not m:
        return None
    return [m.start(i) for i in range(1, len(query)+1)]
    

def test():
    for (q, t, limit, is_valid) in (
        ("1010", "10001001", None, True),
        ("1010", "100011", None, False),
        ("1010", "100010", 3, True),
        ("1010", "100010", 1, True),
        ("1010", "1000010", 1, False),
        ("1010", "01000010", 2, True),
        ("1010", "01000010", 1, False),
        ("1010", "0100000", None, False),

        ):
        result = find_spread_substring(q, t, limit)
        result2 = find_spread_substring2(q, t, limit)
        if result != result2:
            raise AssertionError( (result, result2) )

        if result is not None:
            if limit is not None:
                # check that it's a proper subset
                for (x, y) in zip(result[:-1], result[1:]):
                    # +1 because 'limit' is the maximum gap size
                    if (y-x) > limit+1:
                        raise AssertionError((q, t, limit, result, x, y))
            s = "".join([t[i] for i in result])
            if s != q:
                raise AssertionError((q, t, limit, result, s))
        
        if result is None and not is_valid:
            pass
        elif result is not None and is_valid:
            pass
        else:
            raise AssertionError( (q, t, limit, is_valid, result) )

if __name__ == "__main__":
    test()
    print "All tests passed."
    

				Andrew
				dalke at dalkescientific.com



From tdelaney at avaya.com  Tue May 10 19:53:54 2005
From: tdelaney at avaya.com (Delaney, Timothy C (Timothy))
Date: Wed, 11 May 2005 09:53:54 +1000
Subject: bad argument type for built-in operation
Message-ID: <338366A6D2E2CA4C9DAEAE652E12A1DE025204FF@au3010avexu1.global.avaya.com>

Florian Lindner wrote:

> Traceback (most recent call last):
>   File "visualizer.py", line 8, in ?
>     main()
>   File "visualizer.py", line 5, in main
>     g = GraphCreator(f)
>   File "/home/florian/visualizer/GraphCreator.py", line 13, in
>     __init__ self.conf = ConfigReader(config)
>   File "/home/florian/visualizer/ConfigReader.py", line 53, in
>     __init__ graph.sourceReader = CSVReader(filename, firstline,
>   delimiter) File "/home/florian/visualizer/ConfigReader.py", line
>     13, in __init__ self.reader = csv.reader(f, delimiter=Adelimiter)
> TypeError: bad argument type for built-in operation
> 
> f ist file object, Adelimiter is ",".
> 
> What is wrong there?

Lack of code. I'd start looking very carefully as to whether `f` really
is a file object.

Tim Delaney


From iv at lantic.net  Mon May 16 12:00:36 2005
From: iv at lantic.net (Iwan Vosloo)
Date: 16 May 2005 09:00:36 -0700
Subject: Structuring larger applications - ideas
In-Reply-To: <mailman.49.1116257300.8733.python-list@python.org>
References: <1116255787.625276.221670@g14g2000cwa.googlegroups.com>
	<mailman.49.1116257300.8733.python-list@python.org>
Message-ID: <1116259236.861818.127170@g14g2000cwa.googlegroups.com>


I know my foreign (to python) one class per module idea is what makes
life more difficult for me here.  And there is an argument to be made
out that it is a stupid remnant I stick to from having used it in other
programming languages (do I have to admit C++ in my background?)  Two
small examples of where it it useful for me:  my development
environment is run by make to a large extent.  Many standard UNIX tools
have the intelligence to deal with filenames, and if you know a file
corresponds to a class, you have a lot more info available in your
makefile.  Also, if I use my version control software (currently gnu
arch) to see what's changed, for example, I get a list of changes files
which again gives me more info because I know a file corresponds to a
class.
So, I can do a number of such small things using that convention that
works well with standard old UNIX tools.  And I find that valuable.

As for the dependencies- I'm trying to keep the specification of them
simple.  From a design point of view, it makes sense to me to only
specify ONCE that largeish-collection-of-classes-A depends on
largeish-collection-of-classes-B.  As another simple small example: say
I change the name of large-collection-of-classes-B - this way I only
need to do it once, else I need to grep and sed all over in order to do
it.

It just feels cleaner and easier.

I know essentially, if you stick to having many classes in a python
module, you have what I referred to in the previous paragraph, because
you can stick to importing other modules at the beginning of a module
and so have them and their contens available in the entire file.

Still, I'm investigating whether I can bend the ever-so-flexible python
to work well with my admittedly somewhat strange requirement.  And, off
course, I'd like to hear what others think.

-i



From martin.witte at gmail.com  Sat May  7 11:12:34 2005
From: martin.witte at gmail.com (wittempj@hotmail.com)
Date: 7 May 2005 08:12:34 -0700
Subject: globbing multiple wildcards
In-Reply-To: <1115477662.937084.260270@g14g2000cwa.googlegroups.com>
References: <1115477662.937084.260270@g14g2000cwa.googlegroups.com>
Message-ID: <1115478754.735902.54390@z14g2000cwz.googlegroups.com>

what about :
martin at ubuntu:~$ python
Python 2.4.1 (#2, Mar 30 2005, 21:51:10)
[GCC 3.3.5 (Debian 1:3.3.5-8ubuntu2)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import glob
>>> print glob.glob('/home/*/.mozilla/*/*/Cache*/*')
['/home/martin/.mozilla/firefox/dem8d5eu.default/Cache/_CACHE_MAP_',
'/home/martin/.mozilla/firefox/dem8d5eu.default/Cache/_CACHE_001_',
.........
'/home/martin/.mozilla/firefox/dem8d5eu.default/Cache/66FA72F2d01',
'/home/martin/.mozilla/firefox/dem8d5eu.default/Cache/85F82253d01',
'/home/martin/.mozilla/firefox/dem8d5eu.default/Cache/CE3B4D9Cd01']
>>>



From rrr at ronadam.com  Tue May 17 16:03:27 2005
From: rrr at ronadam.com (Ron Adam)
Date: Tue, 17 May 2005 20:03:27 GMT
Subject: Quick Reference from module doc strings.
In-Reply-To: <1116349136.477233.205260@z14g2000cwz.googlegroups.com>
References: <mailman.65.1116085574.29328.python-list@python.org>
	<1116199904.205240.58300@g49g2000cwa.googlegroups.com>
	<mailman.15.1116204313.8733.python-list@python.org>
	<42880d98$1@nntp0.pdx.net>
	<mailman.27.1116217027.8733.python-list@python.org>
	<1116320306.737808.313530@g44g2000cwa.googlegroups.com>
	<mailman.108.1116346297.8733.python-list@python.org>
	<1116349136.477233.205260@z14g2000cwz.googlegroups.com>
Message-ID: <j6sie.28531$w15.2371@tornado.tampabay.rr.com>

Michele Simionato wrote:

> Ron Adam:
> 
> 
>>Sound great!  Adding a command line parser, I'm going to add a brief
                 ^---------------------------^

That part should have been deleted, I meant your whole program sounded 
good, not just that part. :-)

>>command line parser to it today, but nothing as elaborate as you have
>>already.  Could you post a part of the output as an example?  How is
> 
> the
> 
>>index built?
> 
> 
> For the command line parser, see
> http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/278844

I got this one covered, just haven't done it yet. ;-)


> Here is an example of output:
> 
> http://www.phyast.pitt.edu/~micheles/python/ms.html
> 
> (it is a package called "ms" (as "My Stuff") where I put my utilities).

Good idea, I think I'll follow your lead. Currently my file are not too 
organized.

> The system works for module of the standard library too, but since
> most of the time they do not have docstrings in reST format, there
> are ugly formatting errors. But this is a bug of the standard library,
> not of my tool ;)

Thats part of what I'm trying to resolve, the doc strings a lot of time 
isn't enough by itself or is missing. So I'm trying to build up a 
complete enough record so if there is no doc string, at least some sense 
of what it is can be figured out without a lot browsing or looking at 
the source code.

Then to enable different searches by subject and keywords on these 
instead of by package or module.

> For the index: "minidoc" associates a footnote number to every name,
> and then
> prints the names in alphabetical order. You can reach the documentation
> for that name with a click.
> 
>                Michele Simionato

That's a nice format.  It took me a while before I realized the whole 
page *is* the output and not a part of it as I expected.

Did you use the inspect module to get the class/function name and args?

BTW, I presume you're aware that the "source links" on the web page link 
to your computer and not to a file on the web site.  Just letting know 
in case it was an over site.

Cheers,
_Ron

Ps... I like your physics link page. :)



From tim.golden at viacom-outdoor.co.uk  Tue May 17 04:18:33 2005
From: tim.golden at viacom-outdoor.co.uk (Tim Golden)
Date: Tue, 17 May 2005 09:18:33 +0100
Subject: Problem listing services with wmi
Message-ID: <9A28C052FF32734DACB0A288A3533991EBB816@vogbs009.gb.vo.local>

[Jean-S?bastien Guay]

[... snip Larry Bates' suggestion of removing whitespace ...]

| Out of curiosity, is there any reason why whitespace between 
| the method 
| name and parameter list parentheses isn't good? Because the code I 
| posted before was copy-pasted from Tim Golden's site 
| (http://tgolden.sc.sabren.com/python/wmi.html) and the spaces 
| were there.

It's just a matter of style. Whitespace isn't *that*
significance in Python! I personally -- in whatever
language -- put spaces between function names and
their first parameter. Guido vR, as someone else
has pointed out, prefers not to.

TJG

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From fredrik at pythonware.com  Sat May 28 10:17:21 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Sat, 28 May 2005 16:17:21 +0200
Subject: CVS interface module
References: <1117288852.725521.239660@o13g2000cwo.googlegroups.com>
Message-ID: <d79uda$fb8$1@sea.gmane.org>

"Jim" wrote:

> Inside of a Python script I need to work a CVS archive.  Nothing fancy,
> but I need to update the local tree, change or add some files from time
> to time, and commit.  Naturally I looked for a module that would allow
> me to easily see if there were conflicts, the server is down, etc.
>
> I've looked in this group, Googled around, etc., but I've not found
> anything.

have you seen

    http://pycvs.sourceforge.net/

?

(on the other hand, if it's your own archive, you might wish to switch to
a more modern CVS-style system, http://subversion.tigris.org, which has
a native Python API)

</F>





From bokr at oz.net  Wed May  4 12:12:01 2005
From: bokr at oz.net (Bengt Richter)
Date: Wed, 04 May 2005 16:12:01 GMT
Subject: xmlrpclib and decoding entity references
References: <1115132826.795008.320190@z14g2000cwz.googlegroups.com>
Message-ID: <4278e9a2.656401605@news.oz.net>

On 3 May 2005 08:07:06 -0700, "Chris Curvey" <ccurvey at gmail.com> wrote:

>I'm writing an XMLRPC server, which is receiving a request (from a
>non-Python client) that looks like this (formatted for legibility):
>
><?xml version="1.0"?>
><methodCall>
><methodName>echo</methodName>
><params>
><param>
><value>
><string>Le Martyre de Saint Andr&#xe9; &lt;BR&gt; avec inscription
>&apos;Le Dominiquain.&apos; et &apos;Le tableau fait par le dominicain,
>d&apos;apr&#xe8;s son dessein &#xe0;... est &#xe0; Rome, &#xe0;
>l&apos;&#xe9;glise Saint Andr&#xe9; della Valle&apos; sur le
>cadre&lt;BR&gt; craie noire, plume et encre brune, lavis brun
>rehauss&#xe9; de blanc sur papier brun&lt;BR&gt; 190 x 228 mm. (7 1/2 x
>9 in.)</string>
></value>
></param>
></params>
></methodCall>
>
>But when my "echo" method is invoked, the value of the string is:
>
>Le Martyre de Saint Andr; <BR> avec inscription 'Le Dominiquain.' et
>'Le tableau fait par le dominicain, d'apr:s son dessein 2... est 2
>Rome, 2 l';glise Saint Andr; della Valle' sur le cadre<BR> craie noire,
>plume et encre brune, lavis brun rehauss; de blanc sur papier brun<BR>
>190 x 228 mm. (7 1/2 x 9 in.)
>
>Can anyone give me a lead on how to convert the entity references into
>something that will make it through to my method call?
>
I haven't used XMLRPC but superficially this looks like a quoting and/or encoding
problem. IOW, your "request" is XML, and the <string>...</string> part is also XML
which is part of the whole, not encapsulated in e.g. <![CDATA[...stuff...]]>
(which would tell an XML parser to suspend markup interpretation of ...stuff...).

So IWT you would at least need the <string>...</string> content to be converted to
unicode to preserve all the represented characters. It wouldn't surprise me if the
whole request is routinely converted to unicode, and the "value" you are showing
above is a result of converting from unicode to an encoding that can't represent
everything, and maybe just drops conversion errors. What do you
get if you print repr(value)? (assuming value is passed to you echo method)

If it is a unicode string, you will just have to choose an appropriate value.encode('appropriate')
from available codecs. If it looks like e.g., a utf-8 encoding of unicode, you could try
value.decode('utf-8').encode('appropriate')

I'm just guessing here. But something is interpreting the basic XML, since
&lt;BR&gt; is being converted to <BR>. Seems not unlikely that the rest are
also being converted, and to unicode. You just wouldn't notice a glitch when
unicode <BR> is converted to any usual western text encoding.

OTOH, if the intent (which I doubt) of the non-python client were to pass through
a block of pre-formatted XML as such (possibly for direct pasting into e.g. web page XHTML?)
then a way to avoid escaping every & and < would be to use CDATA to encapsulate it. That
would have to be fixed on that end.

Regards,
Bengt Richter


From fredrik at pythonware.com  Thu May  5 15:30:13 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 5 May 2005 21:30:13 +0200
Subject: How to detect a double's significant digits
References: <1115314620.902071.323410@f14g2000cwb.googlegroups.com><mailman.53.1115315497.29826.python-list@python.org><1115315863.050413.275390@g14g2000cwa.googlegroups.com><s6ydnVxK45ow_-ffRVn-qQ@comcast.com>
	<1115317222.685180.62020@z14g2000cwz.googlegroups.com>
Message-ID: <d5drrq$js3$1@sea.gmane.org>

"mrstephengross" wrote:

> >But, assuming you have your numbers as strings, I would suggest
> looking
> at str.split() and len().
>
> Well, the numbers are in fact stored as numbers, so string processing
> won't work.

if they're not strings, your question is meaningless.  as others have
pointed out, the exact internal representation for 0.103 is more like
0.10299999999999999433786257441170164383947849273681640625
which has a lot more than 3 digits...

> >I'd give you an example, but this sounds kinda like a homework
> assignment.
>
> The task may sound like it comes from class, but I can assure you that
> I am indeed a professional developer.

well professional or not, you clearly need to refresh your floating point
skills.  I suggest reading the following documents before proceeding:

    http://docs.python.org/tut/node16.html
    http://www.lahey.com/float.htm

</F>





From pajo at pajo.com  Wed May 18 04:14:16 2005
From: pajo at pajo.com (Pajo)
Date: Wed, 18 May 2005 10:14:16 +0200
Subject: How to learn OO of python?
In-Reply-To: <1116402543.485651.8300@g44g2000cwa.googlegroups.com>
References: <mailman.130.1116402087.8733.python-list@python.org>
	<1116402543.485651.8300@g44g2000cwa.googlegroups.com>
Message-ID: <d6etgg$tqu$1@sunce.iskon.hr>

Here's the link for download:

http://ibiblio.org/obp/thinkCS/python.php



Bloke wrote:
> The best one I found was Dive Into Python - and it's free
> 
> http://www.diveintopython.org/
> 
> Also, How to Think Like a computer scientist - can't remember the link.
> 
> Bloke
> 


From prabapython at yahoo.co.in  Fri May  6 04:19:14 2005
From: prabapython at yahoo.co.in (praba kar)
Date: Fri, 6 May 2005 09:19:14 +0100 (BST)
Subject: RFC 2822 format date printing function in python
In-Reply-To: 6667
Message-ID: <20050506081914.42197.qmail@web8408.mail.in.yahoo.com>

Dear All,

   In Php we can print RFC 2822 formatted date by
date('r') with parameter r.  Then it will print the
below format date.
"Thu,  7 Apr 2005 01:46:36 -0300".
I want to print same RFC 2822 format in python. Is it
possible in python? . If possible kindly mention the
function related to print RFC format date

regards,
Prabahar 

________________________________________________________________________
Yahoo! India Matrimony: Find your life partner online
Go to: http://yahoo.shaadi.com/india-matrimony


From bokr at oz.net  Sat May 14 17:06:35 2005
From: bokr at oz.net (Bengt Richter)
Date: Sat, 14 May 2005 21:06:35 GMT
Subject: A new to Python question
References: <1116088663.428932.130860@g43g2000cwa.googlegroups.com>
	<1116092670.420301.196570@o13g2000cwo.googlegroups.com>
Message-ID: <428660c2.174663152@news.oz.net>

On 14 May 2005 10:44:30 -0700, "M.E.Farmer" <mefjr75 at hotmail.com> wrote:
[...]
>Be sure to study up on namespaces, it will ease your Python woes.
>Namespaces are the most fundamental part of Python that new users don't
>understand. Namespace mastery will take you far.
>Just remember there are only two scopes local and global ;)
And don't jump to conclusions when you read a line like the last above ;-)
I.e., there can be many different local and global scopes, not just one of each,
and since Python is a very dynamic language, existence of things can vary with
execution time and logic, so those scopes don't all have to exist at the same time,
or at all, nor persist until the program runs to its end. Also, ISTM "local" is probably
being stretched a little above to include nested scopes, which are a bit different
from either plain local or global in how you can access them.

I would second the advice to explore namespaces, and particularly attribute name spaces
such as are defined by classes. Attribute access and descriptors conspire to enable much
of the magic you can cook up with Python, as well as stuff that happens automatically.

In short, a whole unopened deluxe set of programming Legos is at your elbow, besides the
pieces you have encountered so far. Have fun ;-)

Regards,
Bengt Richter


From thorj at ibas.no  Mon May 23 16:26:06 2005
From: thorj at ibas.no (Thor Arne Johansen)
Date: Mon, 23 May 2005 22:26:06 +0200
Subject: Access lotus notes using Python
In-Reply-To: <lWike.155$NV3.3324@news1.nokia.com>
References: <lWike.155$NV3.3324@news1.nokia.com>
Message-ID: <d6te2g$fog$1@sea.gmane.org>

Sateesh wrote:
> Hi,
> Is it possible to access Lotus notes using Python? Can anyone provide me
> some pointers?
> 
> Thanks
> Sateesh
> 
> 

NotesSQL is an ODBC driver for Notes.

Using NotesSQL and a python odbc connection you can use the standard 
python db-api2 to access tables.

(Examples of odbc connection: mxODBC or the odbc provided by win32all)

HTH,

Thor Arne Johansen
Technical Director
Ibas AS



From michele.simionato at gmail.com  Mon May 16 11:05:11 2005
From: michele.simionato at gmail.com (Michele Simionato)
Date: 16 May 2005 08:05:11 -0700
Subject: decorator module
Message-ID: <mailman.58.1116271957.8733.python-announce-list@python.org>

I have written a decorator module to make easier to write good
decorators
(i.e. decorators preserving the signature of the functions they
decorate).

The documentations contains a (hopefully) nice collections of use cases
(which are also test cases, sice I take doctest very seriously ;).

You can find it here:

http://www.phyast.pitt.edu/~micheles/python/decorator.zip

It is released under the Python licence.

Let me know if you are using it and if you would like further
additions/improvements/changes/etc.

Feeback is welcome!

            Michele Simionato



From jwaixs at gmail.com  Mon May 23 13:41:44 2005
From: jwaixs at gmail.com (Noud Aldenhoven)
Date: Mon, 23 May 2005 19:41:44 +0200
Subject: blabla
Message-ID: <pan.2005.05.23.17.41.44.849654@gmail.com>

Python rulz and sorry for this spam...


From tjreedy at udel.edu  Sat May 14 01:29:33 2005
From: tjreedy at udel.edu (Terry Reedy)
Date: Sat, 14 May 2005 01:29:33 -0400
Subject: 80 bit precision ?
References: <20050514003732.GA4225@mrna.tn.nic.in>
Message-ID: <d642bp$cnp$1@sea.gmane.org>


"km" <km at mrna.tn.nic.in> wrote in message 
news:20050514003732.GA4225 at mrna.tn.nic.in...
> Hi all,
>
> does python currently support 80 bit precision  Floating Point Unit ?

Last I read, in CPython, the float type encapsulates a C double.  So, does 
any C compiler implements doubles as 80 bit floats?  Or, if it has 64 bit 
doubles and 80 bit long doubles, are the latter transparently substitutible 
for the former, so that you could change Python's float declaration and 
have everything work as expected?  (I an not sure of either.)

Terry J. Reedy





From dieter at handshake.de  Tue May 24 16:43:20 2005
From: dieter at handshake.de (Dieter Maurer)
Date: 24 May 2005 22:43:20 +0200
Subject: python24.zip
References: <mailman.249.1116595092.8733.python-list@python.org>
	<428e0cc3$0$29954$9b622d9e@news.freenet.de>
	<x7hdgw2zqi.fsf@handshake.de>
	<428faddd$0$26322$9b622d9e@news.freenet.de>
	<x7vf5bku5d.fsf@handshake.de>
	<4290dc79$0$9989$9b622d9e@news.freenet.de>
Message-ID: <x71x7wgxsn.fsf@handshake.de>

"Martin v. L?wis" <martin at v.loewis.de> writes on Sun, 22 May 2005 21:24:41 +0200:
> ...
> What do you mean, "unable to"? It just doesn't.

The original question was: "why does Python put non-existing
entries on 'sys.path'".

Your answer seems to be: "it just does not do it -- but it might
be changed if someone does the work".

This fine with me.

> ...
> In the past, there was a silent guarantee that you could add
> items to sys.path, and only later create the directories behind
> these items. I don't know whether people rely on this guarantee.

I do not argue that Python should prevent adding non-existing
items on "path". This would not work as Python may not
know what "existing" means (due to "path_hooks").

I only argue that it should not *itself* (automatically) put items on path
where it knows the responsible importers and knows (or can
easily determine) that they are non existing for them.

> ...
> > The application was Zope importing about 2.500 modules
> > from 2 zip files "zope.zip" and "python24.zip".
> > This resulted in about 12.500 opens -- about 4 times more
> > than would be expected -- about 10.000 of them failing opens.
> 
> I see. Out of curiosity: how much startup time was saved
> when sys.path was explicitly stripped to only contain these
> two zip files?

I cannot tell you precisely because it is very time consuming
to analyse cold start timing behavior (it requires a reboot for
each measurement).

We essentially have the following numbers only:

                   warm start            cold start
                (filled OS caches)    (empty OS caches)

from file system        5s                 13s
from ZIP archives       4s                  8s
frozen                  3s                  5s

The ZIP archive time was measured after a patch to "import.c"
that prevents Python to view a ZIP archive member as a directory
when it cannot find the currently looked for module (of course,
this lookup fails also when the archive member is viewed as a directory).
Furthermore, all C-extensions were loaded via a "meta_path" hook (and
not "sys.path") and "sys.path" contained just the two Zip archives.
These optimizations led to about 3.000 opens (down from originally 12.500).

> I would expect that importing 2500 modules takes *way*
> more time than doing 10.000 failed opens.

You may be wrong: searching for non existing files may cause
disk io which is several orders of magnitude slower that
CPU activities.

The comparison between warm start (few disc io) and cold start
(much disc io) tells you that the import process is highly
io dominated (for cold starts).

I know that this does not prove that the failing opens contribute
significantly. However, a colleague reported that the
"import.c" patch (essential for the reduction of the number of opens)
resulted in significant (but not specified) improvements.


Dieter


From flamesrock at gmail.com  Tue May 31 18:11:53 2005
From: flamesrock at gmail.com (flamesrock)
Date: 31 May 2005 15:11:53 -0700
Subject: convert a string to tuple
In-Reply-To: <09mdnZZHwb73QAHfRVn-sQ@powergate.ca>
References: <1117570449.887422.225670@g43g2000cwa.googlegroups.com>
	<1117572374.910751.5400@f14g2000cwb.googlegroups.com>
	<VsWdnQNf4J_RUwHfRVn-2g@comcast.com>
	<09mdnZZHwb73QAHfRVn-sQ@powergate.ca>
Message-ID: <1117577513.609930.62320@o13g2000cwo.googlegroups.com>

lol



From bdesth.quelquechose at free.quelquepart.fr  Wed May  4 18:34:24 2005
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Thu, 05 May 2005 00:34:24 +0200
Subject: About Encapsulation
In-Reply-To: <mailman.157.1115209162.6583.python-list@python.org>
References: <mailman.157.1115209162.6583.python-list@python.org>
Message-ID: <42794957$0$282$636a15ce@news.free.fr>

Adriano Monteiro a ?crit :
> Hey folks,
> 
> I wanna know more about encapsulation in python. Is it fully suported?
> How can I define the encapsulation statements for methods and attributes?

If you're thinking of things like private/protected/public:

class Foo(object):
   def __init__(self):
         self.public = 'this is the API'
	self._protected =  'implementation detail'
         self.__private = 'keep out'

BTW, you may want to have a look at this:
http://c2.com/cgi/wiki?EncapsulationIsNotInformationHiding


From sjmachin at lexicon.net  Sun May 29 01:24:26 2005
From: sjmachin at lexicon.net (John Machin)
Date: Sun, 29 May 2005 15:24:26 +1000
Subject: How do i read just the last line of a text file?
In-Reply-To: <1117341766.166081.132240@o13g2000cwo.googlegroups.com>
References: <1117341766.166081.132240@o13g2000cwo.googlegroups.com>
Message-ID: <4299520b@news.eftel.com>

nephish wrote:
> Hey there.
> i want to set a variable to represent the last line of a text file
> how do i do that?
> or even better, how do i create a list of the lines of a text file?
> 

Hey there to you too.

According to the manual 
http://www.python.org/doc/2.4.1/lib/bltin-file-objects.html

    readlines([sizehint])
        Read until EOF using readline() and return a list containing
        the lines thus read.

Which part of this don't you understand?



From steven.bethard at gmail.com  Wed May 25 06:51:59 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Wed, 25 May 2005 04:51:59 -0600
Subject: Dr. Dobb's Python-URL! - weekly Python news and links (May 24)
In-Reply-To: <mailman.81.1117009758.18027.python-list@python.org>
References: <d6vgpr$jlb$1@lairds.us>
	<d6vm00$h1s$1@news.doit.wisc.edu>	<u5ecm2-duk.ln1@lairds.us>
	<mailman.81.1117009758.18027.python-list@python.org>
Message-ID: <5NKdnevP2exSxQnfRVn-hA@comcast.com>

Simon Brunning wrote:
> On 5/24/05, Cameron Laird <claird at lairds.us> wrote:
>> General principle:  if in doubt about the significance of an item in
>> "Python-URL!", assume that it's intended in a constructive way.
> 
> I find that if you make the same assumption about c.l.py in general,
> you are seldom wrong.

+1 QOTW. ;)

STeVe


From chris at angband.org  Wed May  4 07:13:09 2005
From: chris at angband.org (Operation Latte Thunder)
Date: Wed, 4 May 2005 11:13:09 +0000 (UTC)
Subject: twisted jabber and xmlstream
References: <d58b1a$2pa$1@news-int2.gatech.edu>
	<pan.2005.05.04.09.30.35.851070@logilab.fr>
Message-ID: <d5aao5$k7l$1@news-int.gatech.edu>

Sylvain Thenault <sylvain.thenault at logilab.fr> wrote:
> you can find some examples in our fatima project, a jabber bot testing
> client, available at http://www.logilab.org/projects/fatima/0.1
> You'll find a jabber.py module in the distribution containing jabber
> related code.
> 
> hope that helps

thanks, I'll check it out!

-- 
chris at acheris.net			|             Roma Invicta!


From max.derkachev at gmail.com  Thu May  5 05:50:02 2005
From: max.derkachev at gmail.com (Max Derkachev)
Date: 5 May 2005 02:50:02 -0700
Subject: Adding new methods to new-style classes dynamically
In-Reply-To: <1115284225.644287.140090@o13g2000cwo.googlegroups.com>
References: <1115282109.707219.163660@f14g2000cwb.googlegroups.com>
	<1115284225.644287.140090@o13g2000cwo.googlegroups.com>
Message-ID: <1115286602.145867.123350@o13g2000cwo.googlegroups.com>


John Machin wrote:
> >>> A.foo
> 123

Oh, I've been a little dumb to forget about it :)
Thanks.

Max.



From roy at panix.com  Sun May  8 20:48:06 2005
From: roy at panix.com (Roy Smith)
Date: Sun, 08 May 2005 20:48:06 -0400
Subject: __brace__ (PEP?)
References: <mailman.175.1115594947.29826.python-list@python.org>
	<roy-DE30BB.20151208052005@reader1.panix.com>
	<mailman.177.1115599072.29826.python-list@python.org>
Message-ID: <roy-8C6C81.20480608052005@reader1.panix.com>

In article <mailman.177.1115599072.29826.python-list at python.org>,
 James Stroud <jstroud at mbi.ucla.edu> wrote:

> On Sunday 08 May 2005 05:15 pm, Roy Smith wrote:
> > This seems like a pretty esoteric operation to devote a bit of syntax to.
> > It doesn't seem like something people want to do very often.
> 
> Similar to __call__, I don't think that this syntax would be neccessarily 
> devoted to any particular operation. I'm simply offering cross-sectioning as 
> a potential and intuitive operation that would benefit from a shortcut. The 
> main point is that using braces after a name is not defined right now and I 
> think that they could be put to good use.
> 
> James

One of the nice things about Python is that the syntax is relatively 
simple, and words are generally favored over punctuation.  There's lots of 
punctuation which is not currently used, but that doesn't mean it's a good 
idea to go off inventing meanings for it.  I supposed we could have:

foo->bar ==> foo.__arrrow__(bar)
foo$bar ==> foo.__dollar__(bar)
foo#bar ==> foo.__hash__(bar)
foo::bar ==> foo.__scope__(bar)

and so on down the list of non-alphanumeric characters, but the result 
wouldn't be anything most of us would recognize as Python.


From __peter__ at web.de  Sun May  1 02:51:15 2005
From: __peter__ at web.de (Peter Otten)
Date: Sun, 01 May 2005 08:51:15 +0200
Subject: Tkinter weirdness item count
References: <mailman.38.1114801266.14961.python-list@python.org>
Message-ID: <d51u82$oab$05$1@news.t-online.com>

phil wrote:

> def __del__(s):
> line.count?=?line.count?-?1
> 
> ##?delete?the?line?object?if?the
> ##?class?instance?is?deleted
> s.glob.can.delete(s.obj)
> 
> 
> After the rotation I check line.count and it is 3

Did you know that exceptions are ignored in the __del__() method?
One way to verify that your __del__() runs to completion would be to make
the line.count decrement the last statement, and check the total line.count
after the rotation again.
Generally speaking the __del__() method is not the most robust cleanup
mechanism. Maybe you can add a line.delete() method and change your program
flow for it to be called explicitly when the line should no longer be
visible.

Peter



From ajikoe at gmail.com  Tue May 31 08:26:26 2005
From: ajikoe at gmail.com (ajikoe at gmail.com)
Date: 31 May 2005 05:26:26 -0700
Subject: exit after process exit
Message-ID: <1117542386.379343.215340@g47g2000cwa.googlegroups.com>

Hello,

I would like to run a python process and wait until the process exit.
How can I do it?

For example I would like to run a.exe. and wait until a.exe exit.

Sincerely Yours,
Pujo



From sjmachin at lexicon.net  Sun May  1 05:18:25 2005
From: sjmachin at lexicon.net (John Machin)
Date: Sun, 01 May 2005 19:18:25 +1000
Subject: Best way to parse file into db-type layout?
References: <d4s01i$fbh$1@gemini.csx.cam.ac.uk>	<7v1371pn9gvsh52m7nld6ddjm9b9k3elgf@4ax.com>	<d4uc1r$nfs$1@gemini.csx.cam.ac.uk>	<v2e571d3tjkg25n2k2vbbej3hfnku0a6kv@4ax.com>	<d4ugm6$3r2$1@gemini.csx.cam.ac.uk>	<a0j571d3qkd1csavlcdp9t4rhl6hv15sc5@4ax.com>	<d4vn0s$i3b$1@gemini.csx.cam.ac.uk>	<fnp6711cu6m6d7uitbdqsb9jh0bloql1ep@4ax.com>	<mailman.58.1114867406.14961.python-list@python.org>
	<391871t746ng3pgjlm8dv801qjd5cg9qem@4ax.com>
	<mailman.76.1114917120.14961.python-list@python.org>
Message-ID: <mb1971dfgdi69jl6aiaggk1p36v2tdm5kb@4ax.com>

On Sat, 30 Apr 2005 23:11:48 -0400, Steve Holden <steve at holdenweb.com>
wrote:

>John Machin wrote:

>> If the job at hand is simulating awk's file reading habits, yes then
>> fileinput is convenient. However if the job at hand involves anything
>> like real-world commercial data processing requirements then fileinput
>> is NOT convenient.
>> 
>Yet again, get real. If someone tells me that fileinput  meets their 
>requirements who am I (not to mention who are *you*) to say they should 
>invest extra effort in solving their problem some other way?

Michael Hoffmann has said that it meets his simple requirements. He
doesn't use its filelineno() and nextfile(), and says he wouldn't use
it if he needed that sort of functionality. I have no argument with
that.

If I genuinely thought that fileinput (or any other piece of software)
would not meet somebody's requirements i.e. would not solve their
problem, then what should I do? Unless bound by blood ties or
contractual obligations should I keep silent? In any case, who are
*you* to suggest I shouldn't express an opinion?


Back to fileinput: it complicates things when you want to do something
less simple, like some action at the end of each file -- you have to
poll for the first line of the next file, which means that the
end-of-each-file code has to be repeated at the end of all files.
Further, you don't get to see empty files. Hence the examples:

>
>> Example 1: Requirement is, for each input file, to display name of
>> file, number of records, and some data totals.
>> 
>> Example 2: Requirement is, if end of file occurs when not expected
>> (including, but not restricted to, the case of zero records) display
>> an error message and terminate abnormally.
>> 
>Possibly these examples would have some force if they weren't simply 
>invented.

The only "invention" was *simplification* of genuine real-world
requirements.

Many entities receive periodically, often daily, remittances from
other entities with whom they do business. In parallel to the
remittance being paid into the recipient's bank account, there is sent
a file containing details of the breakdown of the total money amount.
At the end of the file there is a trailer record which is mandated to
contain the number of detail records and the total amount of money. 

Checking the contents of the trailer record against (a) the bank
account and (b) calculated totals from the detail records is a real
requirement. So is ringing the alarm bells if end of file is detected
before the trailer record is detected (or there is any other evidence
that the file is defective). How could you possibly imagine that these
are "simply invented"?

Perhaps we should just agree that we have differing perceptions of
reality, and move on.

Cheers,
John


From flamesrock at gmail.com  Mon May 30 20:19:12 2005
From: flamesrock at gmail.com (flamesrock)
Date: 30 May 2005 17:19:12 -0700
Subject: how to prepend string to a string?
Message-ID: <1117498752.591304.42280@g44g2000cwa.googlegroups.com>

so I know you can append a string. But how do you *prepend* a string,
as shown in the following code

#dirList = ['depth1','depth2','depth3']
#string = """position"""
#for x in len(dirList):
#   string += '>> %s'%dirList.pop()    #(????????????)
#

to return
position>> depth1 >> depth2 >> depth3

rather than
position>> depth3 >> depth2 >> depth1


I really hope this feature exists =)

-thanks



From mogmios at mlug.missouri.edu  Fri May 13 04:10:16 2005
From: mogmios at mlug.missouri.edu (Michael)
Date: Fri, 13 May 2005 01:10:16 -0700
Subject: mod_python seg faults with xml
Message-ID: <428460E8.1050006@mlug.missouri.edu>

Trying to process xml (xml-rpx) with a handler in mod_python crashes 
mod_python. Previous versions worked fine. Only change is I recompiled 
with newest versions of Apache, Python, and mod_python. No PHP or 
anything like that involved. Any idea why it seg faults when I try to 
import xmlrpclib and similar modules? Thanks.

--
Michael <mogmios at mlug.missouri.edu>
http://kavlon.org



From phillip.watts at anvilcom.com  Mon May 30 14:24:05 2005
From: phillip.watts at anvilcom.com (phil)
Date: Mon, 30 May 2005 13:24:05 -0500
Subject: Unicode Congruence
Message-ID: <429B5A45.6040001@anvilcom.com>

I can't find, anyone know the unicode symbol
CONGRUENT.
either tilde over equal or triple
tidde would do.
Thanks.



From cpu.crazy at gmail.com  Wed May 18 09:32:31 2005
From: cpu.crazy at gmail.com (CPUFreak91)
Date: 18 May 2005 06:32:31 -0700
Subject: Looking for bored python newbies
Message-ID: <1116423151.573145.57920@f14g2000cwb.googlegroups.com>

Are you a newbie to python? Are you bored? Does everybody else's cool
projects seem to complex for you? I still pretty newbie myself and I
feel like that. How about we newbies start a simple project of our own?



From onfrek at yahoo.com  Sun May 29 15:49:09 2005
From: onfrek at yahoo.com (Michael Onfrek)
Date: 29 May 2005 12:49:09 -0700
Subject: How to restrict lenght of entry widget to certain number of character
Message-ID: <1117396149.334908.238580@g14g2000cwa.googlegroups.com>

Hi!
I'm playing with entry again and trying to restrict length of entry
widget to certain number of character, so users cannot enter more
character into it. Any ideas?
Reg. Michael Onfrek



From dcrespo at gmail.com  Mon May  2 11:21:48 2005
From: dcrespo at gmail.com (dcrespo)
Date: 2 May 2005 08:21:48 -0700
Subject: Which IDE is recommended?
In-Reply-To: <ccac7115br3kqki0dpqic9pb673h5ghvql@4ax.com>
References: <426f90ac$1_2@rain.i-cable.com>
	<9f7v619jhigbtoksslnr88f4idoc6ejvu3@4ax.com>
	<1115039282.069052.287920@o13g2000cwo.googlegroups.com>
	<ccac7115br3kqki0dpqic9pb673h5ghvql@4ax.com>
Message-ID: <1115047308.550787.132130@f14g2000cwb.googlegroups.com>

Hi. You were right: I meant "Code Completition". I did what you told me
to do. I get now auto completition of code.
For example:

import wx
wx.(here appear a list with the possibilities)

But.... (there's always a "but") with:

button = wx.Button(...)

when I write "button." there's a flick of the list of the possible
parameters, resulting in no showing it. Is there a way to correct it?

Daniel



From dcrespo at gmail.com  Fri May  6 09:25:04 2005
From: dcrespo at gmail.com (dcrespo)
Date: 6 May 2005 06:25:04 -0700
Subject: Python & SQLite
In-Reply-To: <slrnd7f65j.rti.klaus@main.szn.dk>
References: <d57g8v$n4c$1@sunce.iskon.hr>
	<mailman.86.1115114086.6583.python-list@python.org>
	<1115131256.058058.139980@o13g2000cwo.googlegroups.com>
	<slrnd7f65j.rti.klaus@main.szn.dk>
Message-ID: <1115385904.297397.266190@g14g2000cwa.googlegroups.com>

> There are specific python modules for SQLite on Linux.

Which? I thought pysqlite works on Linux.

My important question is: If I develop an app using
Python-wxPython-PySQLite under Windows, and run it on Linux, it should
work, ?right?

Daniel



From irmen.NOSPAM at xs4all.nl  Fri May 27 17:35:24 2005
From: irmen.NOSPAM at xs4all.nl (Irmen de Jong)
Date: Fri, 27 May 2005 23:35:24 +0200
Subject: [ANN] XPN 0.4.6
In-Reply-To: <20050527210213.3341.45078.XPN@orion.homeinvalid>
References: <20050527210213.3341.45078.XPN@orion.homeinvalid>
Message-ID: <4297929b$0$150$e4fe514c@news.xs4all.nl>

Nemesis wrote:
> XPN (X Python Newsreader XPN) is a multi-platform newsreader with
> Unicode support. It has features like scoring/actions, X-Face and Face
> decoding, muting of quoted text, newsrc import/export, find article and
> search in the body, spoiler char/rot13, random taglines, and
> configurable attribution lines.

Wow, nice work!

I'm using Thunderbird and am very happy with that, but
looking quickly at your website it seems that XPN is a very
nice application. Will it work on windows? It's not
immediately clear to me...

--Irmen


From cfbolz at gmx.de  Tue May 31 20:23:29 2005
From: cfbolz at gmx.de (Carl Friedrich Bolz)
Date: Wed, 01 Jun 2005 02:23:29 +0200
Subject: The need to put "self" in every method
In-Reply-To: <429CE8F4.5070301@lexicon.net>
References: <1117554344.938440.54700@g14g2000cwa.googlegroups.com>	<mailman.296.1117557471.18027.python-list@python.org>
	<429CE8F4.5070301@lexicon.net>
Message-ID: <429D0001.5050400@gmx.de>

John Machin wrote:

>>Of course, if you *don't* use 'self', you should expect an angly mob
>>with pitchforks and torches outside your castle.
>>
> 
> Wouldn't an angly mob be carrying fishing rods?
> 

Well, I thought they would be carrying pitchfolks and tolches.


From deetsNOSPAM at web.de  Mon May  2 07:33:13 2005
From: deetsNOSPAM at web.de (Diez B. Roggisch)
Date: Mon, 02 May 2005 13:33:13 +0200
Subject: Is python support jxta now?
References: <42760108$1_2@rain.i-cable.com>
Message-ID: <d5535o$p27$00$1@news.t-online.com>

monkey wrote:

> Hi all, just read from the jxta.org that a python implemention of jxta
> framework is being developed. But its project page doesn't state whether
> it can be use now..
> 
> I am interested to learn to develop p2p app, that's why I am studying
> python now. Or there is any lib in python that already implement a p2p
> protocol? Please insight me, thanks a lot ( :

Bittorrent, one of the most actively used p2p protocols is _written_ in
python.

-- 
Regards,

Diez B. Roggisch


From alexs at advfn.com  Mon May 23 15:24:35 2005
From: alexs at advfn.com (Alex Stapleton)
Date: Mon, 23 May 2005 20:24:35 +0100
Subject: ANNOUNCE: twill v0.7, scriptable Web testing
In-Reply-To: <mailman.20.1116853733.18027.python-announce-list@python.org>
References: <mailman.20.1116853733.18027.python-announce-list@python.org>
Message-ID: <078A7C70-0E14-4567-A7BE-DB34D6AA98E1@advfn.com>

This is exactly the sort of thing ive been trying to avoid  
implementing my self for ages :) I will take it for a spin and see  
how it behaves, looks great though.

On 23 May 2005, at 05:07, C. Titus Brown wrote:

> ANNOUNCING twill v0.7.
>
> twill is a simple Web scripting language built on top of Python and
> mechanize.  It's designed for automated testing of Web sites, but
> it may be useful for anybody who needs to deal with Web sites
> (with e.g. logins and cookies) in a non-interactive manner.
>
> twill is a reimplementation of Cory Dodt's PBP.
>
> A twill script looks like this:
>
>    # go to the /. login page
>    go http://slashdot.org/login.pl
>
>    # fill in the form
>    fv 1 unickname test
>    fv 1 upasswd test
>    submit
>
>    # ok, there's no such account ;). show error HTML.
>    show
>
> ---
>
> This is the first public release of twill, version 0.7.
>
> (Tagline: "It seems usable to me, but then I'm its author.")
>
> With this release, I'm looking for general feedback on usability, as
> well as suggestions on additional use cases.
>
> Download directly here:
>
>      http://darcs.idyll.org/~t/projects/twill-0.7.tar.gz
>
> Documentation is online at
>
>      http://www.idyll.org/~t/www-tools/twill.html
>
> ---
>
> Miscellaneous details:
>
> twill is implemented in Python and uses pyparsing and mechanize.  In
> addition to the existing simple command language, twill can easily be
> extended with Python.  twill also provides a fairly simple and
> well-documented wrapper around mechanize.
>
> twill scripts can be recorded with maxq, although scripts may require
> some hand tweaking at the moment.  See the twill documentation for
> more information.
>
> twill does not understand JavaScript, I'm sorry to say.
>
> --titus, titus at caltech.edu
> -- 
> http://mail.python.org/mailman/listinfo/python-list
>
>



From steven.bethard at gmail.com  Tue May 31 01:20:22 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Mon, 30 May 2005 23:20:22 -0600
Subject: finding indices in a sequence of parentheses
In-Reply-To: <1117423019.327925.268370@g49g2000cwa.googlegroups.com>
References: <u_KdneJ4tt9QuwffRVn-tg@comcast.com>
	<1117423019.327925.268370@g49g2000cwa.googlegroups.com>
Message-ID: <PsednSIu7uuPaQbfRVn-gg@comcast.com>

Raymond Hettinger wrote:
> [Steven Bethard]
> 
>>>I have a list of strings that looks something like:
>>>lst = ['0', '0', '(*)', 'O', '(*', '*', '(*', '*))', '((*', '*)', '*)']
> 
>  . . .
> 
>>>I want the indices:
>>>(2, 2), (4, 7), (6, 7), (8, 9) and (8, 10)
> 
> opener_stack = []
> for i, elem in enumerate(lst):
>     for c in elem:
>         if c == '(':
>             opener_stack.append(i)
>         elif c == ')':
>             print opener_stack.pop(), i
> 

Thanks Raymond, this is definitely an elegant solution. It was also easy 
to add all the error checking I needed into this one.  For the curious, 
my final solution looks something like:

def indices(lst):
     stack = []
     for i, elem in enumerate(lst):
         for c in elem:
             if c == '(':
                 stack.append(i)
             elif c == ')' and not stack:
                 raise Exception('")" at %i without "("' % i)
             elif c == ')':
                 yield stack.pop(), i
             elif c == 'O' and stack:
                 raise Exception('"O" at %i after "(" at %i' %
                                 (i, stack[-1]))
             elif c == '*' and not stack:
                 raise Exception('"*" at %i without "("' % i)
     if stack:
         raise Exception('"(" at %r without ")"' % stack)

Thanks again!

STeVe


From mwm at mired.org  Tue May 17 17:38:14 2005
From: mwm at mired.org (Mike Meyer)
Date: Tue, 17 May 2005 16:38:14 -0500
Subject: trouble with copy/deepcopy
References: <pan.2005.05.16.20.18.16.225798@gmx.net>
	<MSGID_2=3A5025=2F3.131_428946c5@fidonet.org>
Message-ID: <86acmt8reh.fsf@guru.mired.org>

Alexander_Zatvornitskiy at p131.f3.n5025.z2.fidonet.org (Alexander Zatvornitskiy) writes:

> ?????? Marc!
>
> 16 ??? 2005 ? 22:18, Marc 'BlackJack' Rintsch ? ????? ?????? ? All ?????:
>
>  MR> That clears only one dictionary at class level.  Which is visible on
>  MR> both instances.
>
>  MR> class Distribution:
>  MR>     def __init__(self):
>  MR>         self.__gr_on_transp = dict()
>  MR>         self.__ostatok_m = dict()
>  MR>     ...
>
>  MR> This creates *instance variables* which should be deepcopied
>  MR> without problems.
> Hmm. I don't find definition of "class variable" in manual. I try to test it on
> such a simple test and find that such variable is NOT shared between copies:

Actually, it is shared - but only for reference. If you assign to it,
you'll create an instance variable of the same name. As Peter
explained, if you remove the instance variable, the class variable
becomes visible again. Try this:

py> class C:
...   q = []
... 
py> c1 = C()
py> c2 = C()
py> c3 = C()
py> c1.q.append(1)
py> c2.q.append(2)
py> c3.q.append(3)
py> c1.q, c2.q, c3.q
([1, 2, 3], [1, 2, 3], [1, 2, 3])
py> 

    <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From steven.bethard at gmail.com  Sun May 15 10:25:18 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Sun, 15 May 2005 08:25:18 -0600
Subject: A new to Python question
In-Reply-To: <mailman.13.1116137361.15315.python-list@python.org>
References: <1116088663.428932.130860@g43g2000cwa.googlegroups.com><Dkqhe.1732$aM4.440@newssvr11.news.prodigy.com>	<cqohl2-pj5.ln1@Bernd.Nawothnig.dialin.t-online.de>
	<mailman.13.1116137361.15315.python-list@python.org>
Message-ID: <k5CdndIAuPBWxhrfRVn-2A@comcast.com>

Fredrik Lundh wrote:
> which is one of the things you really love when you link against
> underdocumented Fortran programs from C.  ("is that parameter
> a scalar or an array? crash! oh, an array. how many values does
> it expect? crash! oh, a few more, I suppose").

+1 QOTW

STeVe


From ARyan at co.linn.or.us  Thu May 12 16:00:52 2005
From: ARyan at co.linn.or.us (Ryan, Adam)
Date: Thu, 12 May 2005 13:00:52 -0700
Subject: Exception value cut off
Message-ID: <8292E3D1E5E2EF4A94C36FE80D2443A83A82E7@linnms,>


sys.exc_info()[1] returns the first 308 characters of an error message from
a module.  Is there a way to increase the length so it doesn't get cut off?

Cheers,

Adam


From the.ech0 at gmail.com  Tue May  3 08:10:55 2005
From: the.ech0 at gmail.com (ech0)
Date: 3 May 2005 05:10:55 -0700
Subject: Py2Exe security
In-Reply-To: <1115121780.404491.84240@f14g2000cwb.googlegroups.com>
References: <1115121780.404491.84240@f14g2000cwb.googlegroups.com>
Message-ID: <1115122255.179436.121260@o13g2000cwo.googlegroups.com>

someone can sniff the client for the information it sends/receives so
its possible to extract the info that way.



From bill.mill at gmail.com  Thu May 12 13:45:29 2005
From: bill.mill at gmail.com (Bill Mill)
Date: Thu, 12 May 2005 13:45:29 -0400
Subject: Python Documentation (should be better?)
In-Reply-To: <d6038k$1v1$1@sea.gmane.org>
References: <5C99C308457E6D4EA5448EA52A66004A675A6E@or.mxim.com>
	<17026.26789.592527.975821@montanaro.dyndns.org>
	<mailman.398.1115843305.29826.python-list@python.org>
	<eL2dnQqPycfr7R_fRVn-1w@comcast.com>
	<mailman.470.1115911344.29826.python-list@python.org>
	<86sm0sig7k.fsf@guru.mired.org>
	<17027.34077.234131.161432@montanaro.dyndns.org>
	<d6038k$1v1$1@sea.gmane.org>
Message-ID: <797fe3d405051210455ce20b65@mail.gmail.com>

On 5/12/05, Terry Reedy <tjreedy at udel.edu> wrote:
> 
> "Skip Montanaro" <skip at pobox.com> wrote in message
> news:17027.34077.234131.161432 at montanaro.dyndns.org...
> > Maybe the Module Index should be renamed "Module/Type Index" and
> > embellished
> > with the builtin types, so that you'd find "float (builtin)", "string
> > (builtin)", "dict (builtin)", etc. in the appropriate alphabetical
> > positions.
> 
> +1
> 
> TJR
> 

+1

Bill Mill
bill.mill at gmail.com


From steve at holdenweb.com  Mon May  2 22:37:40 2005
From: steve at holdenweb.com (Steve Holden)
Date: Mon, 02 May 2005 22:37:40 -0400
Subject: So many things that need to be decided....
In-Reply-To: <G3Ade.1022$fF6.12717@news1.mts.net>
References: <G3Ade.1022$fF6.12717@news1.mts.net>
Message-ID: <d56nph$on9$1@sea.gmane.org>

Heather Stovold wrote:
> Wow - deciding to program in python sure requires a lot of decisions!
> 
> So far:
> 
> I've decided on python for the programming language.
> I've decided on wxpython for the GUI....
> I've decided on DrPython for the Editor....
> 
> I still need to decide on a database........   I've really only used Access,
> and my SQL skills aren't that great.  It would also need to be free....
> Any suggestions??
> 
I'd try sqlite, since you can just install the python extension module 
(which brings its own copy of the Windows DLL with it - since you 
mention Access I assume you are no stranger to Windows].

> Am I going to need a program/package for a report writer?  or that might
> depend on the database I use?
> 
Generally speaking it would probably be a good idea to make sure that 
none of your other software technologies depend too heavily on one 
specific database, though this is generic advice which you can ignore to 
meet other project goals like "easily portable".

> I've never had to make so many decisions to program in my life, because I've
> generally only had a couple of options, or those options were decided by
> other people.
> 
> I really appreciate the help this newsgroup has provided - both for my
> previous post - and for the reading of other posts I've done.   I'm sure
> I'll have a million more questions soon!
> 
As Radio Shack are fond of saying, "You've got questions, we've got 
answers". Make sure you pass them on. And take Peter Hansen's advice to 
get elbow-deep in code.

regards
  Steve
-- 
Steve Holden        +1 703 861 4237  +1 800 494 3119
Holden Web LLC             http://www.holdenweb.com/
Python Web Programming  http://pydish.holdenweb.com/



From rkern at ucsd.edu  Fri May 13 13:26:12 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Fri, 13 May 2005 10:26:12 -0700
Subject: create words of various lengths
In-Reply-To: <1116003875.263029.166190@z14g2000cwz.googlegroups.com>
References: <1116002403.374232.210220@g49g2000cwa.googlegroups.com>	<mailman.41.1116003275.29328.python-list@python.org>
	<1116003875.263029.166190@z14g2000cwz.googlegroups.com>
Message-ID: <d62ngn$3se$1@sea.gmane.org>

superprad at gmail.com wrote:
> Hi Robert,
> At first I thought it would be an interesting thing to have a little
> swift module to create a database of all words in the dictionary.

Okay, take one more step back. Why is it interesting to have such a 
dictionary? How do you intend to use it?

Having answered those questions, why is it interesting to extend this 
with meaningless collections of symbols?

No one can offer you a better method if we don't have a metric to judge 
whether a method is "better" than another.

> But
> then I thought y  just the words in the dictionary? y not all possible
> words like 'and' and 'adn'. Just was inspired with the little idea of
> if its an 'and' or 'adn' when u read it in a combination of other words
> you read it as 'and' itself.
> 
> "nohting spceific wsa jsut plyaing around wtih ideas "

Well, that's a somewhat different problem.

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From belred at gmail.com  Fri May  6 01:40:34 2005
From: belred at gmail.com (Bryan)
Date: Thu, 05 May 2005 22:40:34 -0700
Subject: New Python regex Doc
In-Reply-To: <1115328523.852744.110390@f14g2000cwb.googlegroups.com>
References: <1113301533.054410.203710@z14g2000cwz.googlegroups.com>	<mailman.1813.1113355346.1799.python-list@python.org>	<1113856843.023012.165500@l41g2000cwc.googlegroups.com>	<1113908069.264676.207090@g14g2000cwa.googlegroups.com>
	<1115328523.852744.110390@f14g2000cwb.googlegroups.com>
Message-ID: <d5evjr$rd8$1@sea.gmane.org>

Xah Lee wrote:

> Extra point: If the Python command line interface is actually a robust
> application, like so-called IDE e.g. Mathematica front-end, then things
> are very different. In reality, the Python command line interface is a
> fucking toy whose max use is as a simplest calculator and double as a
> chanting novelty for standard coding morons. In practice it isn't even
> suitable as a trial'n'error pad for real-world programing.
> 

i disagree with this 110%.  i write python and jython code everyday at my 
company and the python interpreter (or command line interface) is always running 
on my computer whether it's from the command prompt, idle, pythonwin, pyshell, 
etc..  using the interpreter while you are coding is an invaluable tool and 
actually helps speed up software development which is opposite of what was 
stated by xah lee.  it allows complete freedom to experiment reducing the amount 
of bugs that are in the real product.  it's also useful to use the pywin modules 
and experiment with the win32 api interactively, or use the jython interpreter 
and experiment with some java api without any compilation step.  i have never 
found these interpreters to be anything but very robust and *IT IS SUITABLE* as 
trial'n'error pad for real-world programming.  the above comment can possible 
only be made by someone who doesn't actually use it for real world programming.


bryan



From Scott.Daniels at Acm.Org  Fri May 20 22:58:24 2005
From: Scott.Daniels at Acm.Org (Scott David Daniels)
Date: Fri, 20 May 2005 19:58:24 -0700
Subject: count files in a directory
In-Reply-To: <mailman.277.1116643240.8733.python-list@python.org>
References: <d6m5e1$cr7$1@solaris.cc.vt.edu>
	<mailman.277.1116643240.8733.python-list@python.org>
Message-ID: <428e9d4f$1@nntp0.pdx.net>

James Stroud wrote:
> Come to think of it
> 
> file_count = len(os.walk(valid_path)[2])
> 
> --
> James Stroud
> UCLA-DOE Institute for Genomics and Proteomics
> Box 951570
> Los Angeles, CA 90095
> 
> http://www.jamesstroud.com/

Somee possible answers are:

     # files directly in path
     file_count = len(os.walk(path)[2])

     # files and dirs directly in path
     file_count = len(os.listdir(path))

     # files in or below path
     file_count = 0
     for root, dirs, files in os.walk(path):
         file_count += len(files)


     # files and dirs in or below path
     file_count = 0
     for root, dirs, files in os.walk(path):
         file_count += len(files) + len(dirs)


--Scott David Daniels
Scott.Daniels at Acm.Org


From just at xs4all.nl  Fri May  6 18:24:07 2005
From: just at xs4all.nl (Just)
Date: Sat, 07 May 2005 00:24:07 +0200
Subject: py2exe + svn - the final drama
References: <427AD7E8.1060500@open-networks.net>
	<mailman.96.1115384045.29826.python-list@python.org>
	<uoebojc8g.fsf@fitlinxx.com>
Message-ID: <just-075293.00240707052005@news1.news.xs4all.nl>

In article <uoebojc8g.fsf at fitlinxx.com>,
 David Bolen <db3l at fitlinxx.com> wrote:

> Are you perhaps trying to update the zip file in-place while it is still
> being used by the application?  I'm not sure that's a safe operation. 

I'm sure it's not :)

[lots of useful help snipped]

the zipimport module has an attr called _zip_directory_cache, which is a 
dict you can .clear(). Still, reloading modules is hairy at best, its 
probably easiest to relaunch your app when the .zip file has changed.

Just


From cjbottaro at alumni.cs.utexas.edu  Wed May 11 16:47:11 2005
From: cjbottaro at alumni.cs.utexas.edu (Christopher J. Bottaro)
Date: Wed, 11 May 2005 15:47:11 -0500
Subject: Python Documentation (should be better?)
References: <d5tjng$kae$1@sea.gmane.org>
	<mailman.390.1115838298.29826.python-list@python.org>
	<d5to4d$895$1@solaris.cc.vt.edu>
Message-ID: <d5tqi2$d8l$2@sea.gmane.org>

rbt wrote:

> Christopher J. Bottaro wrote:
>> Christopher J. Bottaro wrote:
>> 
>> 
>>>...blah blah blah...
>> 
>> 
>> Heh, silly me...there is already a huge thread about this...kinda.
>> 
>> The intricacies of the computing term "greedy" aside, yes I think the
>> Python
>> documentation should generally be better.  What that means, I have no
>> idea. All I know is that I like PHP's documentation and it should be like
>> that. My question is, why is PHP's documentation so good and Python's
>> mediocre?
> 
> Because PHP is such a 'thrown together' and 'bolted-on' language. If it
> didn't have *outstanding* documentation (which it does BTW), no one
> could even begin to understand how they got from a little HTML language
> to a kinda/sorta OO language.
> 
> PHP is showing its age... thanks to its docs, it's still *extremely*
> useful.

Exactly!!  See thats what I'm saying.  I _think_ its widely accepted that
PHP has awesome documentation.  And like rbt said, that makes it extremely
useful.  Why can't Python have documentation like that?  The language is
awesome, it just needs documentation of the same quality.

I'm sorry that I have such a hard time giving specific examples and what
not.  All I can do (as of now) is kinda report the vibe I get...which is
completely useless, I know...=)

-- C



From ajsiegel at optonline.com  Sun May 29 14:44:30 2005
From: ajsiegel at optonline.com (Arthur)
Date: Sun, 29 May 2005 14:44:30 -0400
Subject: Case Sensitive, Multiline Comments
References: <1117137316.140791.210430@g14g2000cwa.googlegroups.com>
	<8664x5y92g.fsf@guru.mired.org> <429654DA.9050903@lexicon.net>
	<1117154013.092736.298310@g14g2000cwa.googlegroups.com>
Message-ID: <hp1k915odus7rohmiqeigt2nru0r5au4mm@4ax.com>

On 26 May 2005 17:33:33 -0700, "Elliot Temple" <curi42 at gmail.com>
wrote:

>Thanks for the link on case sensitivity.  I'm curious about the person
>who found case sensitivity useful though: what is it useful for?

I am curious about why you find case sensitivity annoying.  But just
mildly curious.

Martelli can tell you why Guido keeping case sensitivity in Python was
him bowing to the stupidity of the masses.

I have been neutral on the subject except to the extent the impetous
for going case insensitive would be to statisfy the needs - as Guido
uses the word -  "non-programmers".

a) its probably better to design a programming language around the
needs of programmers than around those of non-porgrammers.  that much
always seemed quite obvious to me. 

b) it would only help non-programmers who were more comfortable with
case insensitivity but hurt non-progammers more comfortable with case
sensitivity.

That Martelli so strongly favors case insensitivity for his own use,
is one of many indications that this is not an issue that cuts along
the lines of quantity of programming experience..

That much also seemed pretty obvious, but it didn't seem to stop the
folks who wanted case insensitivity from making the non-programmer
accessibility issue paramount. and on the flimiest of evidence.  Those
who prefer sensitivity were anti-accessbility elitists. Damn near
Republicans.  

Classic politics.

Thankfully Guido seemed to have lost patience for the whole thing.  I
think the position is pretty much that Python will be case sensitive
becasue it has been case sensitive.

Art




From mweihs at gmx.at  Tue May 17 06:38:10 2005
From: mweihs at gmx.at (Markus Weihs)
Date: Tue, 17 May 2005 12:38:10 +0200
Subject: Python forum
References: <mailman.84.1116320178.8733.python-list@python.org>
Message-ID: <pan.2005.05.17.10.38.09.537008@gmx.at>

Hi!

> I'm going to say a suggestion, why don't you create a forum like the one
> of Ruby (http://www.rubyforums.com/)? for the novices this is a great
> help, better than a mail list
> 
> It's also worth noting that rubyforums.com has nearly no posts (six
> total) because it takes very just a short time working.
> 
> I know that you have python-list, it's both an email and a usenet list.
> But I think that a forum is great for the learning. The test is in
> gentoo's forums. They are a lot of experienced people answering
> questions without any problem and it goes very well

If you speak German, there is a forum at www.python-forum.de .
There is also an english one at http://python-forum.org/py/index.php,
but as you can see, there's not much traffic :-/


Regards, Markus


From querypk at gmail.com  Wed May 25 18:02:46 2005
From: querypk at gmail.com (querypk at gmail.com)
Date: 25 May 2005 15:02:46 -0700
Subject: Improve the performance of a loop
Message-ID: <1117058565.920549.221420@g47g2000cwa.googlegroups.com>

What is the fastest way to code this particular block of code below..
I used numeric for this currently and I thought it should be really
fast..
But, for large sets of data (bx and vbox) it takes a long time and I
would like to improve.

vbox = array(m) (size: 1000x1000 approx)
for b in bx:
    vbox[ b[1], b[0]:b[2] ] = 0
    vbox[ b[3], b[0]:b[2] ] = 0
    vbox[ b[1]:b[3], b[0] ] = 0
    vbox[ b[1]:b[3], b[2] ] = 0

and vbox is a 2D array
where bx is of form [( int,int,int,int),(........) ]



From martin at v.loewis.de  Mon May 23 13:37:03 2005
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Mon, 23 May 2005 19:37:03 +0200
Subject: No encodings after freezing
In-Reply-To: <1116861269.528674.295440@f14g2000cwb.googlegroups.com>
References: <1116861269.528674.295440@f14g2000cwb.googlegroups.com>
Message-ID: <429214BF.7090505@v.loewis.de>

mmf wrote:
> text_new = text.encode('utf_8')
[...]
> But everytime I run this binary the utf-8 encoding cannot be found.
> (Also any other encoding like iso8859_15 cannot be found...)
> 
> What am I doing wrong?

Codecs are modules (in the encodings package). So if the codecs
you need aren't frozen, they aren't available at run-time. OTOH,
freeze cannot "see" the import (since it doesn't know that the
argument to .encode is really similar to a module name), so
it won't include the modules. You need to give it an explicit
list of encodings you want to freeze.

Most likely, there is some explicit command line argument, but
alternatively, you could also put

if 0:
  import encodings.utf_8
  import encodings.iso8859_1
  # etc

into some source file.

Regards,
Martin


From mpnugent at NOSPAMcopper.net  Tue May 17 23:40:52 2005
From: mpnugent at NOSPAMcopper.net (Michael P. Nugent)
Date: Tue, 17 May 2005 23:40:52 -0400
Subject: A Specific PyGame
In-Reply-To: <7Iyie.2326$X92.1859@newsread2.news.pas.earthlink.net>
References: <428ab5d7$1_1@newsfeed.slurp.net>
	<7Iyie.2326$X92.1859@newsread2.news.pas.earthlink.net>
Message-ID: <428abb69$1_5@newsfeed.slurp.net>



Greg Krohn wrote:
> Michael P. Nugent wrote:
> 
>> I am looking for a specific "game" that is really a programming 
>> environment for young kids.
>>
>> I believe it implements PyGame, and presents two windows: one is a 
>> grid with some obstacles, and a character that must traverse the grid; 
>> another is an interactive editor that encourages a learner to write a 
>> script to navigate the character around the obstacles.
>>
>> I saw this within the past week, but I cannot remember or discover 
>> where. I have revisited a number of PyGame related sites, and Googled 
>> like crazy, but I'm not finding any visited links that are productive. 
>> I've also extracted everything out of .mozilla/.../history.dat. As you 
>> can see, I'm looking for a specific answer to my specific query.
>>
> 
> Perhaps you are thinking of GvR (Guido van Robot): 
> http://gvr.sourceforge.net/ .
> 
> -greg

If it were a snake, it woulda' bit me!

I even had a bookmark for it, but for some reason was associating it 
with a Robot Odyssey clone-- written in Java, no less!

It has been a disorienting week. Thank you. <Insert preferred deity 
here> love the Python community.



From http  Sun May 22 03:34:20 2005
From: http (Paul Rubin)
Date: 22 May 2005 00:34:20 -0700
Subject: Is Python suitable for a huge, enterprise size app?
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>
	<1116432325.497438.64580@g49g2000cwa.googlegroups.com>
	<1116433218.495131.71260@g49g2000cwa.googlegroups.com>
	<1116443474.565264.176640@g44g2000cwa.googlegroups.com>
	<7xd5rn93zi.fsf@ruckus.brouhaha.com>
	<mailman.210.1116513794.8733.python-list@python.org>
	<7x1x81d5bx.fsf@ruckus.brouhaha.com>
	<mailman.262.1116623235.8733.python-list@python.org>
	<7xacmpgxn1.fsf@ruckus.brouhaha.com>
	<mailman.299.1116689579.8733.python-list@python.org>
Message-ID: <7x64xbn283.fsf@ruckus.brouhaha.com>

Dave Brueck <dave at pythonapocrypha.com> writes:
> >>m2crypto (plus some patches to make asynchronous SSL do what we needed).
> > That seems to be a nice piece of code, but it's still at version
> > 0.13;
> 
> Version numbers are fairly relative, though. In another project we're
> using some proprietary, closed source libraries (unrelated to crypto)
> that are version 3 and they seem buggier and less stable than m2crypto.

Yeah, OpenSSL itself is something like 0.97, which however does sound
closer to a final release than 0.13 of anything.

> Having said that - I think we probably *would* use it for production
> financial transactions - but that's more a matter of closed vs. open
> source than Python vs not.

That makes some sense; once you have the code in-house and the
expertise to evaluate it and maintain it, it's at least no worse than
something you wrote yourself.  If you just downloaded it and plopped
it into your application with your eyes closed, that might be asking
for trouble.

> > There's also been some traffic on the
> > python-crypto list about Zope encountering memory leaks with it.
> 
> Ok... so? I mean, if there's a memory leak, and it's hurting us, we
> have options: ...

I just mean the memory leak is a symptom that the software isn't yet
completely debugged.

> Memory leaks aren't exactly unique to Python - according to
> bugs.sun.com, there are currently 382 *open* bugs related to memory
> leaks in the JDK alone. 

Are any of those memory leaks in JSSE?  It's one thing to have a
problem in some noncritical GUI widget, another to have it in the
crypto code.


From jstroud at mbi.ucla.edu  Sat May  7 20:36:39 2005
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Sat, 7 May 2005 17:36:39 -0700
Subject: Python Pseudo-Switch
Message-ID: <200505071736.39806.jstroud@mbi.ucla.edu>

Hello All,

Because of my poorly designing a database, I have recently found it necessary 
to explore the wonders of the Python pseudo-switch:

do_case = { "A" : lambda x: x["bob"],
            "B" : lambda x: x["carol"],
            "C" : lambda x: "Ted",
            "D" : lambda x: do_something(x) }

my_thing = do_case[get_value_from_thin_air()](adict)


How to handle this kind of thing when lambda is removed from the language, 
beside the obvious def'ing those tiny little functions?

James

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From andreas at kostyrka.org  Tue May  3 09:56:51 2005
From: andreas at kostyrka.org (andreas at kostyrka.org)
Date: Tue, 3 May 2005 15:56:51 +0200
Subject: Py2Exe security
In-Reply-To: <1115124297.746843.111770@g14g2000cwa.googlegroups.com>
References: <1115121780.404491.84240@f14g2000cwb.googlegroups.com>
	<mailman.96.1115122800.6583.python-list@python.org>
	<1115124297.746843.111770@g14g2000cwa.googlegroups.com>
Message-ID: <20050503135651.GA21228@heaven.kostyrka.org>

On Tue, May 03, 2005 at 06:01:33AM -0700, Terje Johan Abrahamsen wrote:
> 
> Simon Brunning wrote:
> > On 3 May 2005 05:03:00 -0700, Terje Johan Abrahamsen
> <terjeja at gmail.com> wrote:
> > > We have created some programs in Python that are to be distributed
> > > around. The programs will be made into .exe files by py2exe.
> However,
> > > in the source there are certain webadresses, logins and passwords
> that
> > > the programs use, that we would like to keep away from the end
> users.
> > > They will use them thru the program, but we would like them not to
> be
> > > extracted and used separately for other purposes.
> >
> > If your program can access these details, then a suficiently
> > determined attacker can access them too, regardless of what you do.
> 
> Yes, I assume so. Luckily it is not national secrets we are trying to
> hide. But, how does py2exe compare with for example a program written
> in a compiled language like C++? Is it easier to find the info in a
> py2exe .exe than a c++ compiled c++?
About the same. C++ programs do have their string constants as cleartext
in the binary too.

Personally I'd be more concerned about the network side (use https and
verify the server certificate), and debugging tools that might be able
to intercept your traffic anyway.

Andreas


From dkuhlman at rexx.com  Mon May 16 18:32:27 2005
From: dkuhlman at rexx.com (Dave Kuhlman)
Date: Mon, 16 May 2005 22:32:27 GMT
Subject: Recommended version of gcc for Python?
References: <7P5ie.18072$J12.7334@newssvr14.news.prodigy.com>
	<1116271504.748836.25540@z14g2000cwz.googlegroups.com>
Message-ID: <%b9ie.1874$Uv2.19@newssvr13.news.prodigy.com>

casevh at comcast.net wrote:

> On Ubuntu, I have tried 3.3.4, 3.4.3 and 4.0. Compile and make
> test ran successfully with all three. For my benchmark, platform,
> and compiler options, 3.4.3 was the fastest by approximately 2%.
> 
> I would normally use the default compiler for your distribution.
> 

So, I'll stay with what I've got (3.3.5) for now.  Thanks for the
help.

Dave

-- 
http://www.rexx.com/~dkuhlman


From no at noemail.com  Thu May 26 14:39:11 2005
From: no at noemail.com (Jason Gurtz)
Date: Thu, 26 May 2005 14:39:11 -0400
Subject: Intellisense and the psychology of typing
In-Reply-To: <1117125072.825389.74190@g47g2000cwa.googlegroups.com>
References: <1117125072.825389.74190@g47g2000cwa.googlegroups.com>
Message-ID: <42961805$1_3@spool9-east.superfeed.net>

On 5/26/2005 12:31, andrew.queisser at hp.com wrote:

> 1) Intellisense is really just another crutch that does more harm than
> good?

To me I found the intellisense in VS for C++ was somewhat helpful in my
earliest stage of learning where I had to look up how many args a function
 had.  After a while, I found it more convenient to just keep the VS
language and std lib docs open in another window.  IOW, it started getting
in the way.  Maybe at times it can save some keystrokes but I kept finding
a pattern of start typing something...down arrow...down arrow...down
arrow...down arrow...tab...type args.  Even worse is the situation were
start typing something...downWhoops hit left arrow...hit end...hit
backspace...type last letter....down arrow...etc...tab...etc...

How egregious!?  No thank you; I already use variable names like "myData"
instead of "mD" so extra keystrokes are not that big of a deal  :)

Still I think calling it a crutch might be a bit extreme.  Is a book or
documentation a crutch too?

> 2) Intellisense is really useful but hard to implement well in IDEs for
> dynamic languages?

Maybe for some people and yes.  There was some recent discussion in this
very NG about this WRT vim et al.

Cheers,

~Jason

-- 

 Posted Via Usenet.com Premium Usenet Newsgroup Services
----------------------------------------------------------
    ** SPEED ** RETENTION ** COMPLETION ** ANONYMITY **
----------------------------------------------------------        
                http://www.usenet.com


From ccurvey at gmail.com  Tue May  3 11:07:06 2005
From: ccurvey at gmail.com (Chris Curvey)
Date: 3 May 2005 08:07:06 -0700
Subject: xmlrpclib and decoding entity references
Message-ID: <1115132826.795008.320190@z14g2000cwz.googlegroups.com>

I'm writing an XMLRPC server, which is receiving a request (from a
non-Python client) that looks like this (formatted for legibility):

<?xml version="1.0"?>
<methodCall>
<methodName>echo</methodName>
<params>
<param>
<value>
<string>Le Martyre de Saint Andr&#xe9; &lt;BR&gt; avec inscription
&apos;Le Dominiquain.&apos; et &apos;Le tableau fait par le dominicain,
d&apos;apr&#xe8;s son dessein &#xe0;... est &#xe0; Rome, &#xe0;
l&apos;&#xe9;glise Saint Andr&#xe9; della Valle&apos; sur le
cadre&lt;BR&gt; craie noire, plume et encre brune, lavis brun
rehauss&#xe9; de blanc sur papier brun&lt;BR&gt; 190 x 228 mm. (7 1/2 x
9 in.)</string>
</value>
</param>
</params>
</methodCall>

But when my "echo" method is invoked, the value of the string is:

Le Martyre de Saint Andr; <BR> avec inscription 'Le Dominiquain.' et
'Le tableau fait par le dominicain, d'apr:s son dessein 2... est 2
Rome, 2 l';glise Saint Andr; della Valle' sur le cadre<BR> craie noire,
plume et encre brune, lavis brun rehauss; de blanc sur papier brun<BR>
190 x 228 mm. (7 1/2 x 9 in.)

Can anyone give me a lead on how to convert the entity references into
something that will make it through to my method call?



From mahs at telcopartners.com  Thu May 12 15:11:15 2005
From: mahs at telcopartners.com (Michael Spencer)
Date: Thu, 12 May 2005 12:11:15 -0700
Subject: How "return" no return ?
In-Reply-To: <3ehkh2F366o4U1@individual.net>
References: <3ehaurF34ak0U1@individual.net><mailman.472.1115911936.29826.python-list@python.org><3ehc5tF35eo3U1@individual.net>	<mailman.484.1115919541.29826.python-list@python.org>
	<3ehkh2F366o4U1@individual.net>
Message-ID: <d609de$f89$1@sea.gmane.org>

Ximo wrote:
> I am doing my own interpreter with the Python languaje.
> 
> Do you understand me?
> 
> 
> 
> "Fredrik Lundh" <fredrik at pythonware.com> escribi? en el mensaje 
> news:mailman.484.1115919541.29826.python-list at python.org...
> 
>>"Ximo" wrote:
>>
>>
>>>I am doing a interpret of lines and it show me a prompt, and I want if I
>>>write a declaration as "int a" my progrtam return de prompt and nothing
>>>more, for exemple:
>>>
>>>

You may be looking for the flags argument to the compile function:

  >>> exec compile("int(3)","<console>","single")
  3
  >>> exec compile("int(3)","<console>","exec")
  >>>
  >>> help(compile)
  Help on built-in function compile in module __builtin__:

  compile(...)
      compile(source, filename, mode[, flags[, dont_inherit]]) -> code object

      Compile the source string (a Python module, statement or expression)
      into a code object that can be executed by the exec statement or eval().
      The filename will be used for run-time error messages.
      The mode must be 'exec' to compile a module, 'single' to compile a
      single (interactive) statement, or 'eval' to compile an expression.
      The flags argument, if present, controls which future statements influence
      the compilation of the code.
      The dont_inherit argument, if non-zero, stops the compilation inheriting
      the effects of any future statements in effect in the code calling
      compile; if absent or zero these statements do influence the compilation,
      in addition to any features explicitly specified.
  >>>

Michael



From maxm at mxm.dk  Tue May 10 09:14:47 2005
From: maxm at mxm.dk (Max M)
Date: Tue, 10 May 2005 15:14:47 +0200
Subject: Merging overlapping spans/ranges
Message-ID: <4280b31b$0$198$edfadb0f@dread12.news.tele.dk>

I am writing a "find-free-time" function for a calendar. There are a lot 
of time spans with start end times, some overlapping, some not.

To find the free time spans, I first need to convert the events into a 
list of non overlapping time spans "meta-spans".

This nice ascii graph should show what I mean.

1) ---
2)     ---
3)   ---
4)          -----
5)             -----

 >> -------  -------- # meta spans

I can then iterate through the meta-spans and find non-busy times.

I have written the class below, but it is rather O^2, so I wondered if 
anybody has an idea for a better approach?


######################################
# -*- coding: latin-1 -*-

"""
1) ---
2)     ---
3)   ---
4)          -----
5)             -----

 >> -------  --------
"""

class MetaSpans:

     """
     Populate with a list of span tuples [(start,end)], and it will make 
"meta"
     spans, with overlapping spans folded into one span.
     """

     def __init__(self):
         self.spans = []

     def add(self, span):
         start, end = span
         overlapping = [span]
         non_overlapping = []
         for spn in self.spans:
             spn_start, spn_end = spn
             # span rules for iterated spans
             starts_before = spn_start <= start
             ends_after = spn_end >= end
             is_outside = starts_before and ends_after
             starts_inside = start <= spn_start <= end
             ends_inside =  start <= spn_end <= end
             overlaps = starts_inside or ends_inside or is_outside
             if overlaps:
                 overlapping.append(spn)
             else:
                 non_overlapping.append(spn)
         # overlapping spans are changed to one span
         starts = []
         ends = []
         for start, end in overlapping:
             starts.append(start)
             ends.append(end)
         min_start = min(starts)
         max_end = max(ends)
         non_overlapping.append( (min_start, max_end) )
         self.spans = non_overlapping


     def findFreeTime(self, duration):
         self.spans.sort()




if __name__ == '__main__':

     ms = MetaSpans()
     ms.add((0,3))
     ms.add((4,7))
     ms.add((2,5))
     ms.add((9,14))
     ms.add((12,17))
     print ms.spans


     from datetime import datetime
     ms = MetaSpans()
     ms.add((datetime(2005, 1, 1, 0, 0, 0), datetime(2005, 1, 1, 3, 0, 0)))
     ms.add((datetime(2005, 1, 1, 4, 0, 0), datetime(2005, 1, 1, 7, 0, 0)))
     ms.add((datetime(2005, 1, 1, 2, 0, 0), datetime(2005, 1, 1, 5, 0, 0)))
     ms.add((datetime(2005, 1, 1, 9, 0, 0), datetime(2005, 1, 1, 14, 0, 0)))
     ms.add((datetime(2005, 1, 1, 12, 0, 0), datetime(2005, 1, 1, 17, 0, 
0)))
     print ms.spans





-- 

hilsen/regards Max M, Denmark

http://www.mxm.dk/
IT's Mad Science


From could.net at gmail.com  Thu May 19 05:03:34 2005
From: could.net at gmail.com (could ildg)
Date: Thu, 19 May 2005 17:03:34 +0800
Subject: What's the use of changing func_name?
In-Reply-To: <d6hcst$qop$1@sea.gmane.org>
References: <311b5ce105051822477c09c81@mail.gmail.com>
	<d6ha7v$kh9$1@sea.gmane.org>
	<311b5ce1050518231650b3b53e@mail.gmail.com>
	<d6hcst$qop$1@sea.gmane.org>
Message-ID: <311b5ce1050519020323729e26@mail.gmail.com>

Thanks to Robert Kern.
You mean that though we can change the func_name of a function,
but we still can't call it by func_name, and the func_name is only
useful in some other circumstances?
I also think so now after I have tried so many times on this puzzled func_name
property.
On 5/19/05, Robert Kern <rkern at ucsd.edu> wrote:
> could ildg wrote:
> > Thank you for your help.
> > I know the function g is changed after setting the func_name.
> > But I still can't call funciton g by using f(), when I try to do
> > this, error will occur:
> > <code>
> >
> >>>>g.func_name="f"
> >>>>print g
> >
> > <function f at 0x00B2CEB0>
> >
> >>>>f()
> >
> > Traceback (most recent call last):
> >   File "<stdin>", line 1, in ?
> > NameError: name 'f' is not defined
> > </code>
> > Since the name of g is changed into f, why can't I call it by using f()?
> > Should I call it using f through other ways? Please tell me. Thanks~
> 
> Others have answered this particular question, but you're probably still
> wondering what is the use of changing .func_name if it doesn't also
> change the name by which you call it. The answer is that there are tools
> that use the .func_name attribute for various purposes. For example, a
> documentation generating tool might look at the .func_name attribute to
> make the proper documentation. Actually, that's probably *the* biggest
> use case because I can't think of any more significant ones.
> 
> --
> Robert Kern
> rkern at ucsd.edu
> 
> "In the fields of hell where the grass grows high
>   Are the graves of dreams allowed to die."
>    -- Richard Harter
> 
> --
> http://mail.python.org/mailman/listinfo/python-list
>


From nir at digitalpeers.com  Tue May  3 05:57:02 2005
From: nir at digitalpeers.com (Nir Aides)
Date: Tue, 03 May 2005 12:57:02 +0300
Subject: Tkinter and Windows XP themes (via manifest files)
Message-ID: <42774b17@news.bezeqint.net>

Hello,

How do I make Tkinter use windows XP themes?
ordinary root Tkinter windows ignore the manifest file (which is placed 
by wxPython for the same purpose)

but message dialogs popped with tkMessageBox.Message do use the Windows 
Theme, so it should be possible.

Does anyone has a clue?
Thanks,
Nir


From 550283447739-0001 at t-online.de  Tue May 17 14:51:58 2005
From: 550283447739-0001 at t-online.de (Oliver Albrecht)
Date: Tue, 17 May 2005 20:51:58 +0200
Subject: Image.putpalette(Colors)?
References: <d6cl5u$mas$05$1@news.t-online.com>
	<mailman.100.1116341360.8733.python-list@python.org>
Message-ID: <d6ddro$i3s$01$1@news.t-online.com>

Thanks,
I've read this page.( out of date ?)
http://www.pythonware.com/products/pil/articles/creating-palette-images.htm

Very nicely to become answered  from the major author and python genius
highly personally himself :-D

Which I want to do is; convert several "RGB" Images (or "P") with one
specified palette (to "P").
Or this (for "P")pattern; if the Source Image has the exact same colors but
wrong(other) paletteIds, how can i sort this? With List.sort()?
And give each pixel the right paletteId? That is what i mean with similar
image (source"RGB" to destinaton"P").

convert() without "WEB"?

(sry if i've enough experience with python)>=newbie





From harlinseritt at yahoo.com  Sun May  8 09:16:16 2005
From: harlinseritt at yahoo.com (Harlin Seritt)
Date: 8 May 2005 06:16:16 -0700
Subject: SGMLlib module
Message-ID: <1115558176.212693.45280@z14g2000cwz.googlegroups.com>

I am trying to use SGMLlib module to extract all links from some data I
pulled from the web (via urllib). I have looked at the documentation
online and can not make sense of it. As a quick example, how would I
get the hyperlinks for an html file?

thanks,

Harlin



From ville at spammers.com  Sat May 21 07:09:28 2005
From: ville at spammers.com (Ville Vainio)
Date: 21 May 2005 14:09:28 +0300
Subject: moving from c++ to python
References: <d6mufo$o8v$1@nwrdmz03.dmz.ncs.ea.ibs-infra.bt.com>
Message-ID: <du7sm0gq1hz.fsf@amadeus.cc.tut.fi>

>>>>> "Michael" == Michael  <slick_mick_00 at hotmail.com> writes:

    Michael> me?? My biggest confusion so far is the lack of pointers
    Michael> in Python ......

Achtually, python uses pointers for everything. On the contrary there
are no "value types" in python.

MyClass* c = new MyClass(12,13);

is equal to 

c = MyClass(12,13)

There is no equivalent to 

MyClass c(12,13);

because it's not needed.

-- 
Ville Vainio   http://tinyurl.com/2prnb


From peter at engcorp.com  Tue May 10 23:16:46 2005
From: peter at engcorp.com (Peter Hansen)
Date: Tue, 10 May 2005 23:16:46 -0400
Subject: pyvm -- faster python
In-Reply-To: <7xvf5qbir1.fsf@ruckus.brouhaha.com>
References: <mailman.164.1115548611.29826.python-list@python.org>
	<1115561483.741761.212140@f14g2000cwb.googlegroups.com>
	<m102l2-9qr.ln1@home.rogerbinns.com>
	<mailman.264.1115716603.29826.python-list@python.org>
	<vu38l2-k5v.ln1@home.rogerbinns.com>
	<7xvf5qbir1.fsf@ruckus.brouhaha.com>
Message-ID: <obGdnRblvfjY5BzfRVn-3g@powergate.ca>

Paul Rubin wrote:
> "Roger Binns" <rogerb at rogerbinns.com> writes:
> 
>>That will rule out all the gui frameworks, SSL, cryptography
>>and numerous other packages.  Have a look at what happened to
>>Prothon.  
> 
> 
> I think it would be enough to retarget SWIG.
> 
> 
>>What ultimately killed it was the problem of having a decent
>>library.
> 
> 
> Nah, I think people just lost interest.  Otherwise, why isn't Jython
> dead?

I thought Jython had full access to the entire library of standard Java, 
plus at least the Python parts of the Python standard library...

-Peter


From rkern at ucsd.edu  Sun May  1 05:23:31 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Sun, 01 May 2005 02:23:31 -0700
Subject: wxPython: ansi or unicode?
In-Reply-To: <42749af0$1_3@rain.i-cable.com>
References: <42749af0$1_3@rain.i-cable.com>
Message-ID: <d526s1$dbs$1@sea.gmane.org>

monkey wrote:
> Hi all, which should be install? Really confused @@...

Unicode.

> Is that mean unicode version used for programming in language other than
> English?

No. The Unicode version allows the underlying wxWidgets GUI toolkit to 
use Unicode text. You want this.

On certain platforms, older versions of the unicode version of wxPython 
were somewhat unstable. I believe this has been largely resolved, and 
the ANSI versions will be going away.

I may have some details wrong. If you want an authoritative answer, ask 
on the wxPython lists.

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From ramen at lackingtalent.com  Fri May 20 13:43:38 2005
From: ramen at lackingtalent.com (Dave Benjamin)
Date: Fri, 20 May 2005 10:43:38 -0700
Subject: OO design question / Transform object in place?
In-Reply-To: <1116585815.095195.141750@g43g2000cwa.googlegroups.com>
References: <1115825605.654601.137580@f14g2000cwb.googlegroups.com>
	<50qge.9716$D91.477@fed1read01>
	<1116585815.095195.141750@g43g2000cwa.googlegroups.com>
Message-ID: <dnpje.50263$yV4.31075@okepread03>

andy2O at hotmail.com wrote:
> Dave Benjamin wrote:
> 
>>I think it's much better for simplify() to return a new object
>>and leave the original object unmodified. You can still write:
>>expression2 = expression2.simplify()
> 
> A belated thank-you message for your reply to my posting. I took your
> advice, and made all the simplify methods return new objects and this
> has simplified my code structure a great deal (and any slow down in run
> time just doesn't matter!).

No problem. Glad it helped. =)

> Am I right that to make "expression2.simplify()" return a new object I
> will need use copy.copy a lot, as in:
> 
> def simplify(self):
>     newreturnvalue=copy.copy(self)
>     #
>     #....now the code does lots of complicated things
>     #    to newreturnvalue object...
>     #
>     return newreturnvalue

You could use copy.copy(), as long as you want a shallow copy and you 
don't want to change from one class to another. However, it may be to 
your advantage to use the constructor of one or more classes to build 
the result; this allows you to conditionally pick the result object's 
class. Also, there may be situations where an object can't be 
simplified, in which case you can just return "self", and avoid copying 
entirely.

Dave


From bdelmee at advalvas.REMOVEME.be  Sat May 21 08:34:01 2005
From: bdelmee at advalvas.REMOVEME.be (=?ISO-8859-1?Q?Bernard_Delm=E9e?=)
Date: Sat, 21 May 2005 14:34:01 +0200
Subject: import cx_Oracle fails!
In-Reply-To: <1116547117.316065.104030@o13g2000cwo.googlegroups.com>
References: <1116454404.355741.51730@f14g2000cwb.googlegroups.com>
	<mailman.204.1116506008.8733.python-list@python.org>
	<1116546336.235595.19700@o13g2000cwo.googlegroups.com>
	<1116547117.316065.104030@o13g2000cwo.googlegroups.com>
Message-ID: <428f2b1f$0$1819$6c56d894@reader0.news.be.easynet.net>

Hi Daniel,

is your processor Itanium or PA? I am having a hard time
getting cx_oracle (4.1) and python (2.3.5) to cooperate on
an HP-UX 11.23 server (I see you're running 11.11).

I can compile both packages with gcc 3.4.3 either in 32-bit
(apparently the default) or 64-bit (-mlp64 gcc flag) but python
refuses to load the cx_oracle.sl shared lib...

Bernard.


From slick_mick_00 at hotmail.com  Sun May 22 07:26:03 2005
From: slick_mick_00 at hotmail.com (Michael)
Date: Sun, 22 May 2005 11:26:03 +0000 (UTC)
Subject: Newbie python design question
Message-ID: <d6pq8b$6ms$1@nwrdmz02.dmz.ncs.ea.ibs-infra.bt.com>

Hi,
I'm trying to write a script to parse a .cpp file and begin to create a
'translational unit'.
To do this i need to:

Go through the file and remove all 'C' comments as
/* Comment 1*/
(can be on multiple lines)

Go through and remove all 'C++' comments, anything between // and '\n' char.

The start at the top, and work the way through, with the following valid
terms:

#include <filename>
#include "filename"
    - copy the contents of filename to this point in the file and continue.

#define X Y
    -Store the term X,Y in DefineDictionary, then later if X is encountered,
substitute Y.

namespace n
{

};
    -a  namespace, can contain classes, functions and sub-namespaces

class c
{


};
    -a class.


If i were to process this in C++, i would create some form of statemachine,
similar to a regex engine... I would just like some ideas on the easiest way
to implment this in python!!

Regards

Mike




From adsheehan at eircom.net  Mon May  9 11:33:13 2005
From: adsheehan at eircom.net (adsheehan at eircom.net)
Date: 9 May 2005 08:33:13 -0700
Subject: M2Crypto SSL memory leaks - fixes or alternatives ??
Message-ID: <1115652793.232733.310800@f14g2000cwb.googlegroups.com>

Hi folks,

I notice that M2Crypto (a python wrap of OpenSSL) leaks (haemorrhages)
memory significantly and affects my long running app very badly.

Does anyone know of fixes to this problem?

Does anyone recommmend alternatives to M2C ? e.g pyopenssl.

I notice that Guido Van Rossum has flamed about this in the past but I
am not aware of any resolutions.

Thanks
Alan



From ivoras at fer.hr  Sat May 28 06:32:30 2005
From: ivoras at fer.hr (Ivan Voras)
Date: Sat, 28 May 2005 12:32:30 +0200
Subject: Software licenses and releasing Python programs for review
In-Reply-To: <1117245014.218831.317750@g14g2000cwa.googlegroups.com>
References: <1117245014.218831.317750@g14g2000cwa.googlegroups.com>
Message-ID: <d79hdu$d1f$1@bagan.srce.hr>

poisondart wrote:

> Ultimately I desire two things from the license (but not limited to):
> - being able to distribute it freely, anybody can modify it
> - nobody is allowed to make profit from my code (other than myself)

GPL does something like this, except it doesn't forbid anyone to sell 
the software. Also, you do realize that if you make it freely 
distributable and modifiable, you could get into the situations where 
potential customers say "so why should we buy it from him when we can 
get it free from X"?


From jrastrick at student.usyd.edu.au  Wed May 11 02:59:26 2005
From: jrastrick at student.usyd.edu.au (Jordan Rastrick)
Date: 10 May 2005 23:59:26 -0700
Subject: Merging overlapping spans/ranges
In-Reply-To: <bQbge.73336$c24.41132@attbi_s72>
References: <4280b31b$0$198$edfadb0f@dread12.news.tele.dk>
	<42813c84.1201907341@news.oz.net> <bQbge.73336$c24.41132@attbi_s72>
Message-ID: <1115794766.178243.202740@g47g2000cwa.googlegroups.com>

Should work fine as far as I can see. Of course, thats not very
'pythonic' - I should probably give at least 10 different unit tests
that it passes ;)

Its gratifying to know I'm not the only one who needed that final
yield.

Jim Sizelove wrote:
> Bengt Richter wrote:
> > On Tue, 10 May 2005 15:14:47 +0200, Max M <maxm at mxm.dk> wrote:
> >
> >
> >>I am writing a "find-free-time" function for a calendar. There are
a lot
> >>of time spans with start end times, some overlapping, some not.
> >>
> >>To find the free time spans, I first need to convert the events
into a
> >>list of non overlapping time spans "meta-spans".
> >>
> >>This nice ascii graph should show what I mean.
> >>
> >>1) ---
> >>2)     ---
> >>3)   ---
> >>4)          -----
> >>5)             -----
> >>
> >>
> >>>>-------  -------- # meta spans
> >>
> >>I can then iterate through the meta-spans and find non-busy times.
> >>
> >>I have written the class below, but it is rather O^2, so I wondered
if
> >>anybody has an idea for a better approach?
> >>
> >
> > Maybe (not tested beyond what you see ;-)
>
> It is with some trepidation that I write this message; after hanging
> around in c.l.p for the better part of a year, I have come to expect
> Bengt's messages to be right-on and error-free.
>
> However this time...  :)
> >  >>> def mergespans(spans):
> >  ...      start = end = None
> >  ...      for s,e in sorted(spans):
> >  ...          if start is None: start, end = s,e; continue
> >  ...          if s <= end: end = e; continue
> >  ...          yield start, end
> >  ...          start,end = s,e
> >  ...      if start is not None: yield start, end
> >  ...
> >  >>> spans = [(0,3), (4,7), (2,5), (9,14), (12,17)]
> >  >>> list(mergespans(spans))
> >  [(0, 7), (9, 17)]
>
> There can be a problem in mergespans if one span fits inside another:
>
>   >>> spans = [(0,5), (4,7), (2,3), (9,14), (12,17)]
>   >>> list(mergespans(spans))
>   [(0, 3), (4, 7), (9, 17)]
>
> Here is a revised version (not tested beyond what you see ;-)
>   >>> def mergespans(spans):
>   ...     start = end = None
>   ...     for s,e in sorted(spans):
>   ...         if start is None:
>   ...             start, end = s,e
>   ...             continue
>   ...         if s <= end:
>   ...             if end < e:
>   ...                 end = e
>   ...             continue
>   ...         yield start, end
>   ...         start,end = s,e
>   ...     if start is not None:
>   ...         yield start, end
>   ...
>   >>> list(mergespans([(0,5), (4,7), (2,3), (9,14), (12,17)]))
>   [(0, 7), (9, 17)]
>   >>> list(mergespans([(0,3), (4,7), (2,5), (9,14), (12,17)]))
>   [(0, 7), (9, 17)]
>
> Can anyone find any other errors in this? ;-)
> 
> With humble regards,
> Jim Sizelove



From mrovner at propel.com  Tue May 10 16:38:54 2005
From: mrovner at propel.com (Mike Rovner)
Date: Tue, 10 May 2005 13:38:54 -0700
Subject: Merging overlapping spans/ranges
In-Reply-To: <4280b31b$0$198$edfadb0f@dread12.news.tele.dk>
References: <4280b31b$0$198$edfadb0f@dread12.news.tele.dk>
Message-ID: <d5r5mu$cac$1@sea.gmane.org>

Max M wrote:
> I am writing a "find-free-time" function for a calendar. There are a lot 
> of time spans with start end times, some overlapping, some not.
> 
> To find the free time spans, I first need to convert the events into a 
> list of non overlapping time spans "meta-spans".
> 

"Almost" linear method (includes .sort() which is afaik N*logN):
[Set all priority to 1, or you will get changes in priorities as well.]

def merge(p):
     """ p is a seq of (start, priority, end)
     returns list of merged events:
       (start1, pri), (end1, 0), (start2, pri), (end2, 0), ...
     """
     all=[] # list of x, h, up, id
     for id,(l,h,r) in enumerate(p):
         all.append((l,h,1,id))
         all.append((r,h,0,id))
     all.sort()

     sl = [] # skyline solution
     slx = slh = 0 # current values
     vis = {} # active {id:h}
     for x,h,up,id in all:
         if up:
             vis[id]=h
             if h>slh:
                 sl.append((x,h))
                 slh=h
         else:
             del vis[id]
             assert h<=slh
             if h==slh:
                 v = vis.values()
                 if v:
                     h = max(v)
                 else:
                     h = 0
                 sl.append((x,h))
                 slh=h
         slx=x
     # merge same time events
     s=dict(sl)
     sl=s.keys()
     sl.sort()
     return [(k,s[k]) for k in sl]



From bill.mill at gmail.com  Tue May 10 13:39:06 2005
From: bill.mill at gmail.com (Bill Mill)
Date: Tue, 10 May 2005 13:39:06 -0400
Subject: Python Graphing Utilities.
In-Reply-To: <-dadnS0X7IVccR3fRVn-uQ@entouch.net>
References: <-dadnS0X7IVccR3fRVn-uQ@entouch.net>
Message-ID: <797fe3d405051010392c00011f@mail.gmail.com>

On 5/10/05, Kenneth Miller <ken.miller at entouch.net> wrote:
> Hello All,
> 
>     I am new to Python and i was wondering what graphing utlities would be
> available to me. I have already tried BLT and after weeks of unsuccesful
> installs i'd like to find something else. Anything someone would recommend?

matplotlib is awesome:

http://matplotlib.sourceforge.net/

and gnuplot.py is passable:

http://gnuplot-py.sourceforge.net/

(a better version of gnuplot.py is available with the excellent
ipython interpreter at http://ipython.scipy.org/)

All of the above are cross-platform to at least linux and windows.

Peace
Bill Mill
bill.mill at gmail.com


From a.schmolck at gmx.net  Sat May 14 00:45:54 2005
From: a.schmolck at gmx.net (Alexander Schmolck)
Date: Sat, 14 May 2005 05:45:54 +0100
Subject: Python Polymorphism
References: <20050512200045.85674.qmail@web52604.mail.yahoo.com>
	<mailman.498.1115931491.29826.python-list@python.org>
Message-ID: <yfswtq2jtz1.fsf@black4.ex.ac.uk>

"Fredrik Lundh" <fredrik at pythonware.com> writes:

> Carlos Moreira wrote:
>
>> Supose that I want to create two methos (inside a
>> class) with exactly same name, but number of
>> parameters different:
>
> that's known as multimethods, or multiple dispatch. 

No -- multiple dispatch is something entirely different.

'as


From ml at dynkin.com  Tue May  3 10:46:44 2005
From: ml at dynkin.com (George Yoshida)
Date: Tue, 03 May 2005 23:46:44 +0900
Subject: Documenting Python code.
In-Reply-To: <1115128200.628997@hqnntp01.autodesk.com>
References: <1115128200.628997@hqnntp01.autodesk.com>
Message-ID: <d582sa$26mj$1@dojima-n0.hi-ho.ne.jp>

Isaac Rodriguez wrote:
 > Python is a dynamically typed language, which makes me think of the
 > importance of documenting not only the purpose of a particular 
function or
 > class method, but also what requirements should be met by the 
objects passed
 > as parameters, what will the function return, and what type of 
erros can
 > happen. I don't see any of this information in the __doc__ 
attributes, so I
 > was wondering if people is using some other way to document their code.

I guess you're talking about something like literate programming.
If so, doctest module may be useful for that purpose. Doctest can also
be used as a unittest.

-- 
george

http://www.dynkin.com/


From chenyang2000 at 126.com  Fri May  6 09:02:48 2005
From: chenyang2000 at 126.com (=?gb2312?B?s8LR9A==?=)
Date: Fri, 6 May 2005 21:02:48 +0800 (CST)
Subject: =?gb2312?B?VGtpbnRlciBBcHAgdG8gU3lzdGVtIFRyYXk=?=
Message-ID: <427B6AF8.0000D2.25368@m61.126.com>

    I write a program with Python 2.4 + Tkinter
    Execute it, there will be a window show something.
    If I minimize it, it will be minimized to the taskbar. But I would like it to miniminze to the System Tray, this can make taskbar more clear. Would you please tell me how to modify my program.

    Thanks a lot !!

Soure Code : 

# Display digits of pi in a window, calculating in a separate thread.
# Compare with wpi.py in the Demo/threads/wpi.py

import sys
import time
import thread
from Tkinter import *

class ThreadExample:
    def __init__(self, master=None):
        self.ok                = 1
        self.digits            = []
        self.digits_calculated = 0
        self.digits_displayed  = 0
        self.master            = master

        thread.start_new_thread(self.worker_thread, ())

        self.frame = Frame(master, relief=RAISED, borderwidth=2)
        self.text = Text(self.frame, height=26, width=50)
        self.scroll = Scrollbar(self.frame, command=self.text.yview)
        self.text.configure(yscrollcommand=self.scroll.set)
        self.text.pack(side=LEFT)
        self.scroll.pack(side=RIGHT, fill=Y)
        self.frame.pack(padx=4, pady=4)
        Button(master, text='Close', command=self.shutdown).pack(side=TOP)

        self.master.after(100, self.check_digits)

    def worker_thread(self):
        while self.ok:
            self.digits.append(`9`)
            time.sleep(0.001)

    def shutdown(self):
        self.ok =0
        self.master.after(100, self.master.quit)

    def check_digits(self):
        self.digits_calculated = len(self.digits)
        diff = self.digits_calculated - self.digits_displayed
        ix = self.digits_displayed
        for i in range(diff):
            self.text.insert(END, self.digits[ix+i])
        self.digits_displayed =  self.digits_calculated
        self.master.title('%d digits of pi' % self.digits_displayed)
        self.master.after(100, self.check_digits)

root = Tk()
root.option_readfile('optionDB')
example = ThreadExample(root)
root.mainloop()

-------------- next part --------------
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From Sebastien.Boisgerault at gmail.com  Wed May  4 08:54:43 2005
From: Sebastien.Boisgerault at gmail.com (=?iso-8859-1?q?S=E9bastien_Boisg=E9rault?=)
Date: 4 May 2005 05:54:43 -0700
Subject: About Encapsulation
In-Reply-To: <mailman.157.1115209162.6583.python-list@python.org>
References: <mailman.157.1115209162.6583.python-list@python.org>
Message-ID: <1115211283.929662.127820@f14g2000cwb.googlegroups.com>

You mean private, protected, public, that kind of stuff ?

They do not exist in Python. Conventionally if you don't want
the user of a class to access a method or attribute, you use
the prefix _ ;

class K(object):

    _a = 1

    def __init__(self, val):
        self.arg = val
        self._hidden = 1

    def _method(self):
        pass


The _hidden attribute can still be accessed by ...

>>> h = K()._hidden

... but hey ! You know you *should* not. It's the
"we are all consenting adults" philosophy of
programming.

By the way, K._method and K._a won't appear
in the (py-)doc of the class ...

Cheers,

SB



From rupole at hotmail.com  Thu May 19 03:57:00 2005
From: rupole at hotmail.com (Roger Upole)
Date: Thu, 19 May 2005 03:57:00 -0400
Subject: soundcard readout on a windows system
References: <d6fd1k$bio$1@rzsun03.rrz.uni-hamburg.de>
Message-ID: <428c47ab$1_1@spool9-west.superfeed.net>

Take a look at the directsound module from Pywin32.
I haven't used it myself, but it may be able to do what
you need.

       Roger

"Jan Wienhausen" <Jan.Wienhausen at Physnet.uni-hamburg.de> wrote in message 
news:d6fd1k$bio$1 at rzsun03.rrz.uni-hamburg.de...
> Hi,
> I would like to read out the soundcard with python on a win system. Is 
> there any possibillity to do so?
>
> Thanks,
> Jan 



----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups
----= East and West-Coast Server Farms - Total Privacy via Encryption =----


From andreas at kostyrka.org  Thu May 19 13:17:16 2005
From: andreas at kostyrka.org (andreas at kostyrka.org)
Date: Thu, 19 May 2005 19:17:16 +0200
Subject: SSL (HTTPS) with 2.4
In-Reply-To: <428CC477.6070508@fluent.com>
References: <1116406256.213128.68180@f14g2000cwb.googlegroups.com>
	<grGie.3984$uR4.2802@newsread2.news.atl.earthlink.net>
	<1116422715.320683.228810@g49g2000cwa.googlegroups.com>
	<1116424363.953180.79260@g47g2000cwa.googlegroups.com>
	<1116424660.917136.79680@g47g2000cwa.googlegroups.com>
	<428b7bc5$0$7346$9b622d9e@news.freenet.de>
	<1116463961.944713.210860@g49g2000cwa.googlegroups.com>
	<mailman.208.1116513082.8733.python-list@python.org>
	<1116521081.100575.70720@f14g2000cwb.googlegroups.com>
	<428CC477.6070508@fluent.com>
Message-ID: <20050519171716.GA16953@heaven.kostyrka.org>

Hi!

HTTPS over a proxy (CONNECT) hasn't worked for a long time in python
(actually it has never worked).

A quick glance at the 2.4 Changelog doesn't suggest that this has been
fixed.

So basically you've got the following options:
a) redo your own http/https support.
b) look around on the net for some patches to httplib (google is your friend)
   be aware that these are quite old patches.
c) using some external solution, like pycURL.

Andreas


On Thu, May 19, 2005 at 12:53:11PM -0400, Andrew Bushnell wrote:
> Thanks for the update. I will/can keep you posted. I know for a fact we 
> use a Squid proxy which sounds like what you are using. I am going to 
> check out the faq you sent and see what it comes up with. I have also 
> been perusing the net a bit and looking at other client packages and see 
> if they work, such as cURL etc.
> 
> Thanks,
> 
> Andrew
> 
> Bloke wrote:
> > Andrew,
> > 
> > It seems I'm not the only one going nuts here.  I have just spent the
> > last 4 hrs stepping through the code in the debugger.  It seems to get
> > stuck somewhere in the socket module (when it calls ssl) but haven't as
> > yet figured out exactly where.
> > 
> > I am _very_ interested to find that you have the same prob with a
> > non-authenticating proxy.  I had considered I was doing something wrong
> > with the authentication, but from what you say, and from what I have
> > deduced from the code, it is not the authentication that is at fault.
> > 
> > Like you, a standard browser works fine, so I'm inclined to think there
> > is something buggy with the way the sockets module talks to the proxy.
> > There has been some suggestion that it may me a 'Microsoftish' proxy
> > which is at fault, but I believe it is a Squid proxy our company uses.
> > 
> > There is an interesting note here (
> > http://www.squid-cache.org/Doc/FAQ/FAQ-11.html  setcion 11.34 )
> > regarding malformed https requests sent through Squid with buggy
> > clients.  It may be worth looking into.
> > 
> > Anyway, if you have any luck, _please_ let me know - I'm getting
> > desparate.
> > 
> 
> -- 
> ************************************
> Andrew Bushnell
> Lead Development Engineer
> Fluent Inc.
> 10 Cavendish Court
> Centerra Resource Park
> Lebanon, NH  03766
> awb at fluent.com
> Phone: 603-643-2600, ext. 757
> Fax: 603-643-1721
> www.fluent.com
> ************************************
> -- 
> http://mail.python.org/mailman/listinfo/python-list


From Scott.Daniels at Acm.Org  Sun May 22 09:28:43 2005
From: Scott.Daniels at Acm.Org (Scott David Daniels)
Date: Sun, 22 May 2005 06:28:43 -0700
Subject: Python Polymorphism
In-Reply-To: <usXje.11385$E7.4211@news-server.bigpond.net.au>
References: <20050512200045.85674.qmail@web52604.mail.yahoo.com><mailman.498.1115931491.29826.python-list@python.org>	<yfswtq2jtz1.fsf@black4.ex.ac.uk>
	<mailman.60.1116054738.29328.python-list@python.org>
	<usXje.11385$E7.4211@news-server.bigpond.net.au>
Message-ID: <4290827f$1@nntp0.pdx.net>

Joal Heagney wrote:
> ... "If you're sick of answering newbie questions, and don't 
> think you can do so politely, for the sake of the community,
> DON'T!"  You're not that necessary.

+1 QOTW (or at least FAQ)
--Scott David Daniels
Scott.Daniels at Acm.Org



From timothy at open-networks.net  Thu May  5 17:38:49 2005
From: timothy at open-networks.net (Timothy Smith)
Date: Fri, 06 May 2005 07:38:49 +1000
Subject: Py2Exe security
In-Reply-To: <1115249595.645525.233470@z14g2000cwz.googlegroups.com>
References: <1115121780.404491.84240@f14g2000cwb.googlegroups.com>	<1115129613.564775.21660@g14g2000cwa.googlegroups.com>	<117f3lk633rbs87@corp.supernews.com>
	<d5841n$ocp$1@bagan.srce.hr>
	<1115249595.645525.233470@z14g2000cwz.googlegroups.com>
Message-ID: <427A9269.3020104@open-networks.net>

i used to work in a place that did this exact same thing. they attempted
to hide passwords in source code.
there is an even bigger problem with this then security of it in source
- if someone comprimises the password, how are you going to change it
quickly? all those systems will have to update their exe.
keep in mind they could get it any other number of ways forcing you to
change it.

it's the same reason it's not a good idea to put static address's in source.



From gerard.blais at gmail.com  Mon May  2 15:04:37 2005
From: gerard.blais at gmail.com (Gerard C Blais)
Date: Mon, 02 May 2005 15:04:37 -0400
Subject: urllib2 and timeout question
Message-ID: <l1uc7197m6pp0o6bhjvml3pa8308pgv2m9@4ax.com>



I'm trying to get a page from a slow server. and i'm timing out.

I've tried 

socket.setdefaulttimeout9300), and 

urllib2.socket.setdefaulttimeout(300), and

 urllib2.socket.setdefauttimeout(300.0), 

 but all  seem to give up after 20 seconds.

What's the best (or a good) way to increase the timeout?

(the url works fine, but slowly, when pasted into a browser)

Thanks,

Gerry

============

Code below:

import time 
import urllib2
import socket

starting_time = time.clock()

socket.setdefaulttimeout(300)
print "timeout set"

lat             = 38.836971
lon             = -77.378228

starting_width  = 20
ending_width    = 0.01

index = 0
width = starting_width

while width > ending_width:
    width *= 0.3
    index += 1
    url = "http://tiger.census.gov/cgi-bin/mapper/map.gif?lat=" +
str(lat) + \
        "&lon=" + str(lon) + \
        "&wid=" + str(width) + \
        "&iht=719&iwd=843&&on=majroads&mlat=" + str(lat) + \
        "&mlon=" + str(lon) + \
        "&msym=redpin&mlabel=SMM&conf=mapnew.con"
    
    url_start_time = time.clock()
    print round(starting_time,0), url
    
    try:
        fd = urllib2.urlopen(url)
    except:
        print time.clock(), "timed out"


From kay.schluehr at gmx.net  Wed May 25 08:10:51 2005
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: 25 May 2005 05:10:51 -0700
Subject: open file in dir independently of operating system
In-Reply-To: <1117021114.316734.117480@o13g2000cwo.googlegroups.com>
References: <1117021114.316734.117480@o13g2000cwo.googlegroups.com>
Message-ID: <1117023050.964065.241820@g14g2000cwa.googlegroups.com>

Joerg Schuster schrieb:

> Hello,
>
>
> I want to open the file 'configuration.smo' that is in directory dir.
> Yet, I don't know on which os my program is being run. On Unix I would
> say:
>
> f = open(dir + '/configuration.smo', 'r')
>
> What is the os-independent version of this line?

Did You check this out on Windows? My experience with *nix paths is
that they work.

>>> open("C:/bla.txt")
<open file 'C:/bla.txt', mode 'r' at 0x026B4A20>

Kay



From rkern at ucsd.edu  Wed May 25 21:58:32 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Wed, 25 May 2005 18:58:32 -0700
Subject: Checking for a full house
In-Reply-To: <1117071824.882035.250710@g49g2000cwa.googlegroups.com>
References: <1117071824.882035.250710@g49g2000cwa.googlegroups.com>
Message-ID: <d73acm$th6$1@sea.gmane.org>

mwdsmith wrote:
> Hi, I'm new to python, and I'm not sure if this is the place to post
> this kind of question; so feel free to tell me if I should take this
> elsewhere.
> 
> So, to start me off on python, I decided to put together a little
> script to test the probabilities of rolling certain combinations of
> dice.  Below is my code for checking for a full house (when rolling
> with 5 dice).  A roll is a list, eg [1, 3, 5, 1, 4] (this example is
> not a full house)
> 
> def removeAll(element, num2Rem, list):
>     l = list[:]
>     for num in range(0, num2Rem):
>         l.remove(element)
>     return l
> 
> def isfullHouse(roll):
>     for die in range(1,7):
>         if roll.count(die)==3:
>             l = removeAll(die, 3, roll)
>             if l[0]==l[1]:
>                 return 1
>     return 0
> 
> My questions is this: is there a better way to do this?  A way that's
> more natural to python, or just more efficient perhaps?
> 
> ps. A roll of [1, 2, 1, 1, 2] is a full house (three of one kind and
> two of another)

def isFullHouse(roll):
     counts = [roll.count(die) for die in range(1,7)]
     counts.sort()
     return counts == [0, 0, 0, 0, 2, 3]

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From steve at holdenweb.com  Tue May  3 06:49:16 2005
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 03 May 2005 06:49:16 -0400
Subject: lists in cx_Oracle
In-Reply-To: <pan.2005.05.03.05.36.19.884795@dalkescientific.com>
References: <pan.2005.04.05.18.44.52.434578@dalkescientific.com>	<pan.2005.04.30.17.02.16.988085@dalkescientific.com>	<1115047620.602263.180780@o13g2000cwo.googlegroups.com>	<pan.2005.05.02.16.33.57.959347@dalkescientific.com>	<1115056746.166202.97140@f14g2000cwb.googlegroups.com>	<pan.2005.05.03.04.15.54.256350@dalkescientific.com>	<mailman.77.1115096182.6583.python-list@python.org>
	<pan.2005.05.03.05.36.19.884795@dalkescientific.com>
Message-ID: <d57kj6$2ug$1@sea.gmane.org>

Andrew Dalke wrote:
> Steve Holden wrote:
> 
>>Do you think this is a DB-API 3-ish kind of a thing, or would it layer 
>>over DB-API 2 in a relatively platform-independent manner?
> 
>     ... 
> 
>>but-you-may-know-better-ly y'rs  - steve
> 
> 
> I am a tyro at this.  I had to find some tutorials on SQL
> to learn there even was an IN clause for the WHERE statement.
> All told I've had about 1 hour experience using DB-API 2.
> 
> I thought this would be a common enough need that others
> would have chimed in by now saying "oh yes, you just need
> to XYZ" where XYZ is something cleaner than "make a new
> string to execute".
> 
I seem to remember from a good while back that there have *been* 
database (perhaps even specifically Oracle) interface modules that 
supported a set-style interface in ways similar to your stated 
requirements, but alas it's a long time ago and the details are dim.

Given that we now have a Decimal type, allowing us to fulfil an 
outstanding DB API wish list item, maybe it's time for DB API 3. Anyone?

regards
  Steve
-- 
Steve Holden        +1 703 861 4237  +1 800 494 3119
Holden Web LLC             http://www.holdenweb.com/
Python Web Programming  http://pydish.holdenweb.com/



From devrim.erdem at gmail.com  Mon May 23 13:28:02 2005
From: devrim.erdem at gmail.com (DE)
Date: 23 May 2005 10:28:02 -0700
Subject: Terminating a thread from the parent
Message-ID: <1116869282.045234.239040@g14g2000cwa.googlegroups.com>

Hello,

I have an app with embedded Python. Python scripts create their own
threads and I need to terminate these threads at the point where the
user wants to leave the application. I use threading.Thread as base
classes.

I have tried to use call the join method of the python thread objects
from C++. But although the call succeeds, the threads don't exit.

What is the proper way of doing this ? (e.g. how does the python shell
do this ? )

Thanks in advance,

Devrim.



From mahs at telcopartners.com  Fri May 13 13:44:04 2005
From: mahs at telcopartners.com (Michael Spencer)
Date: Fri, 13 May 2005 10:44:04 -0700
Subject: Safe eval, or how to get list from string
In-Reply-To: <1115999726.286709.140690@f14g2000cwb.googlegroups.com>
References: <1115999726.286709.140690@f14g2000cwb.googlegroups.com>
Message-ID: <d62oe5$p12$1@sea.gmane.org>

bwooster47 at gmail.com wrote:
> I've to use ConfigParser.
> 
> It returns values that are exactly in the config file, so get string
> variables like:
> int1 with quotes and characers: "42"
> this is easy to convert to int:
> realint = int(int1)
> 
> I've read the tutorial, and the FAQ, and not sure if I missed it, but
> other than calling eval (which everyone says is unsafe), I don't know
> if there is another way to do this:
> string1 has "this is a string" or however complex a string (""" aaa
> """).
> I can do
> realstring = eval(string1)
> or
> if there is list1 = "[ 'filea', 'fileb', ]", I can get at list by
> doing:
> reallist = eval(list1)
> 
> is there an easier/simpler method of doing the same thing as realstring
> and reallist lines above?
> 
See: http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/364469

Michael



From guy at r-e-d.co.nz  Mon May  9 16:57:52 2005
From: guy at r-e-d.co.nz (Guy Robinson)
Date: Tue, 10 May 2005 08:57:52 +1200
Subject: [Python.NET] Announce: Python for .NET 1.0 RC1 released
In-Reply-To: <INENIOEOCHPHGHKLFLOLKEIOEEAA.brian@zope.com>
References: <INENIOEOCHPHGHKLFLOLKEIOEEAA.brian@zope.com>
Message-ID: <427FCED0.6080208@r-e-d.co.nz>

Great Stuff!!!

 >(probably including a few specific
 > examples of embedding Python for .NET in a .NET application).

Cool!! :-)

Guy

Brian Lloyd wrote:
> Hi all -
> 
> I'm happy to announce the release of Python for .NET 1.0 RC1.
> You can download it from:
> 
>   http://www.zope.org/Members/Brian/PythonNet
> 
> Highlights of this release:
> 
>     - Implemented a workaround for the fact that exceptions cannot be
> new-style
>       classes in the CPython interpreter. Managed exceptions can now be
> raised
>       and caught naturally from Python
> 
>     - Implemented support for invoking methods with out and ref parameters.
>       Because there is no real equivalent to these in Python, methods that
>       have out or ref parameters will return a tuple. The tuple will contain
>       the result of the method as its first item, followed by out parameter
>       values in the order of their declaration in the method signature.
> 
>     - Fixed a refcount problem that caused a crash when CLR was imported in
>       an existing installed Python interpreter.
> 
>     - Added an automatic conversion from Python strings to byte[]. This
> makes
>       it easier to pass byte[] data to managed methods (or set properties,
>       etc.) as a Python string without having to write explicit conversion
>       code. Also works for sbyte arrays. Note that byte and sbyte arrays
>       returned from managed methods or obtained from properties or fields
>       do *not* get converted to Python strings - they remain instances of
>       Byte[] or SByte[].
> 
>     - Added conversion of generic Python sequences to object arrays when
>       appropriate (thanks to Mackenzie Straight for the patch).
> 
>     - Added a bit of cautionary documentation for embedders, focused on
>       correct handling of the Python global interpreter lock from managed
>       code for code that calls into Python.
> 
>     - PyObject.FromManagedObject now correctly returns the Python None
> object
>       if the input is a null reference. Also added a new AsManagedObject
>       method to PyObject, making it easier to convert a Python-wrapped
> managed
>       object to the real managed object.
> 
>     - Created a simple installer for windows platforms.
> 
> 
> All known bugs have also been fixed - thanks to all who have sent in issue
> reports and patches for past releases.
> 
> At this point, the only thing I plan to do before a 1.0 final is fix any
> new issues and add to the documentation (probably including a few specific
> examples of embedding Python for .NET in a .NET application).
> 
> Enjoy! ;)
> 
> 
> Brian Lloyd        brian at zope.com
> V.P. Engineering   540.361.1716
> Zope Corporation   http://www.zope.com
> 

-- 
Robinson eDesign,            P/F: +64 7 866 0626
Rings Beach,                 M: 021 238 0839 -ltd coverage
RD2,                         E: guy at r-e-d.co.nz
Whitianga.
New Zealand




From strombrg at dcs.nac.uci.edu  Tue May 31 21:26:57 2005
From: strombrg at dcs.nac.uci.edu (Dan Stromberg)
Date: Wed, 01 Jun 2005 01:26:57 GMT
Subject: ignoring SIGPIPE in a python script?
Message-ID: <pan.2005.06.01.01.26.56.994483@dcs.nac.uci.edu>


I have a python script that sometimes gets a SIGPIPE signal, and errors
out.  And I want it to just terminate as though it had hit EOF.

I'm running:

   signal.signal(signal.SIGPIPE,signal.SIG_IGN)

...in the main function, but the script is still erroring out on sigpipe
when the consumer to its producer terminates early.

Am I going to have to code in a handful of exceptions, and then
conditionalize what happens in those exception handlers, to get the
desired behavior?

ISTR hearing that although bash notifies one of SIGPIPE errors, tcsh
generally silently ignores them.  From this, I conclude that it might be
reasonable for my script to ignore SIGPIPE.

Thanks!



From manu.1982 at gmail.com  Fri May 27 04:26:05 2005
From: manu.1982 at gmail.com (Manu)
Date: 27 May 2005 01:26:05 -0700
Subject: ftplib fails when directory name contains spaces
In-Reply-To: <1117141499.924280.19140@z14g2000cwz.googlegroups.com>
References: <1117141499.924280.19140@z14g2000cwz.googlegroups.com>
Message-ID: <1117182365.284394.166540@f14g2000cwb.googlegroups.com>

Oops..It was my mistake :(.
Directory name with spaces work by default.



From theller at python.net  Wed May 25 08:01:03 2005
From: theller at python.net (Thomas Heller)
Date: Wed, 25 May 2005 14:01:03 +0200
Subject: open file in dir independently of operating system
In-Reply-To: <mailman.86.1117021458.18027.python-list@python.org>
References: <1117021114.316734.117480@o13g2000cwo.googlegroups.com>
	<mailman.86.1117021458.18027.python-list@python.org>
Message-ID: <3fj7nvF81tj6U1@individual.net>

Gerald Klix schrieb:
> Hi,
> it`s
> 
> import os
> f = open( os.path.join( dir , 'configuration.smo' ), 'r' )

*nix-heads everywhere?

For a text file, I would prefer:
  f = open( os.path.join( dir , 'configuration.smo' ), 'U' )

and for a binary file:
  f = open( os.path.join( dir , 'configuration.smo' ), 'rb' )

That way it also works on Windows.

Thomas
> 
> Joerg Schuster schrieb:
> 
>> Hello,
>>
>>
>> I want to open the file 'configuration.smo' that is in directory dir.
>> Yet, I don't know on which os my program is being run. On Unix I would
>> say:
>>
>> f = open(dir + '/configuration.smo', 'r')
>>
>> What is the os-independent version of this line?
>>
>> (I have read the manual of the module os, but I didn't see how to do
>> it.)
>>
>>
>> J?rg Schuster
>>
> 


From exogen at gmail.com  Sat May 14 15:24:27 2005
From: exogen at gmail.com (Brian Beck)
Date: Sat, 14 May 2005 15:24:27 -0400
Subject: Returning Date As String ?
In-Reply-To: <pan.2005.05.14.11.05.47.499875@optushome.com.au>
References: <pan.2005.05.14.11.05.47.499875@optushome.com.au>
Message-ID: <d65j8k$15r$1@eeyore.INS.cwru.edu>

Peter Moscatt wrote:
> I am wanting to return the system date using the following:
> 
> 	date.today()
> 
> How would I then convert this to a string ?

Use the strftime method. The formatting directives are documented here:
http://docs.python.org/lib/module-time.html

Example: date.today().strftime("%B %d, %Y")

-- 
Brian Beck
Adventurer of the First Order


From skip at pobox.com  Tue May  3 10:57:11 2005
From: skip at pobox.com (Skip Montanaro)
Date: Tue, 3 May 2005 09:57:11 -0500
Subject: atexit not being executed
In-Reply-To: <BAY107-F36617C6982C24E265109DB8F180@phx.gbl>
References: <BAY107-F36617C6982C24E265109DB8F180@phx.gbl>
Message-ID: <17015.37191.253238.398725@montanaro.dyndns.org>


    Chris> I tried looking through the documentation ...

Always a good first step... <wink>

    Chris> ... and came across atexit. I tried putting this into my code and
    Chris> it never seems to actually process the atexit.register(....)
    Chris> function thus leaving me stranded. My question is what might be
    Chris> the reason for this happening ...

You didn't post any code, so I can only guess, however, if your program
exits other than by calling Py_Finalize (that is, if your program crashes or
you kill it forcefully), I don't think your registered exit functions will
be called.  If that's not the situation, post some code so people can see if
you're using the module correctly.

Skip



From jeffh at activestate.com  Sun May 15 22:47:06 2005
From: jeffh at activestate.com (Jeff Hobbs)
Date: Sun, 15 May 2005 19:47:06 -0700
Subject: BLT with TCL/TK 8.4.9 and Python 2.4
In-Reply-To: <feKdnULfs4F2mhXfRVn-gQ@entouch.net>
References: <feKdnULfs4F2mhXfRVn-gQ@entouch.net>
Message-ID: <428809AA.3020904@activestate.com>

Kenneth Miller wrote:
> Has anyone acheived this?

There is no reason why Tkinter couldn't load BLT (from the Tcl
side).  You could wrap it up into a Tkinter-style widget, or
just drive it through lower level evals.

-- 
   Jeff Hobbs, The Tcl Guy
   http://www.ActiveState.com/, a division of Sophos


From turbos10 at interia.pl  Sun May 29 14:57:36 2005
From: turbos10 at interia.pl (turbos10)
Date: Sun, 29 May 2005 20:57:36 +0200
Subject: double w pythonie?
References: <Xns9665D51559607turboswiecznieywy@127.0.0.1>
Message-ID: <Xns9665D537DC454turboswiecznieywy@127.0.0.1>

w <news:Xns9665D51559607turboswiecznieywy at 127.0.0.1>
turbos10 napisa?(a):

> Witam!
> Z jaka precyzja python dokonuje obliczen zmiennoprzecinkowych. Czy
> jest w pythonie typ podwojnej precyzji (double z c).

sorry!

-- 
Uwagi o b??dach ortograficznych czy interpunkcyjnych, oraz wszelkie 
s?owne utarczki za?atwiaj listami prywatnymi.


From jacob at cd.chalmers.se  Mon May 23 10:58:41 2005
From: jacob at cd.chalmers.se (Jacob Hallen)
Date: 23 May 2005 14:58:41 GMT
Subject: Optimise Europython competition
References: <mailman.31.1116220889.8733.python-announce-list@python.org>
	<mailman.50.1116258348.8733.python-list@python.org>
Message-ID: <d6sr31$8ed$1@eol.dd.chalmers.se>

In article <mailman.50.1116258348.8733.python-list at python.org>,
Carl Friedrich Bolz  <cfbolz at gmx.de> wrote:
>Jacob Hallen wrote:
>> 2. A track should be continuous. Each track that is continuous gives you
>>    10 points.
>
>What exactly do you mean by "continuous track"?

Continuous means that from the time of the first talk in the track until
all talks in the track have been given, there will be a talk from the track
in each time slot (in exceptional cases there can be an empty time slot
inserted to make things fit, but usually that is not needed.)

The main reason for this rule is that some people only come for a few
talks in a specific track, and they don't want to have to stay 3 days
because we scheduled some on Monday morning and the rest on Wednesday
morning.

Last year we even had 2 people driving down from Norway, paying the
270 Euro on-site fee, just to listen to a single talk. They then had
a chat with the speaker and went home, quite happy with their conference.

Jacob Hall?n

-- 


From fredrik at pythonware.com  Thu May 12 14:11:47 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 12 May 2005 20:11:47 +0200
Subject: Python Documentation (should be better?)
References: <5C99C308457E6D4EA5448EA52A66004A675A6E@or.mxim.com>	<17026.26789.592527.975821@montanaro.dyndns.org><mailman.398.1115843305.29826.python-list@python.org><eL2dnQqPycfr7R_fRVn-1w@comcast.com>
	<d5vrpo$54n$1@sea.gmane.org>
Message-ID: <d605ql$b9d$1@sea.gmane.org>

Christopher J. Bottaro wrote:

> My idea for a manual's table of contents:
>
> 1.  Variables

python doesn't have variables.  the corresponding construct is
described in chapter 4 in the language reference.

> 2.  Conditional and Branching Constructs

chapter 6 and 7 in the language reference:

> 3.  Looping Constructs

chapter 7 in the language reference.

> 4.  Functions

chapter 5 for function calls (functions are just one of many
kinds of callable objects).

chapter 7 in the language reference for definitions.

> 5.  Modules

chapter 6 in the language reference for use.

chapter 8 in the language reference for definitions.

> 6.  Classes

chapter 5 in the language reference for use (classes are just
one of many kinds of callable objects, and instances are just
one of many kinds of objects with attributes).

chapter 7 in the language reference for definitions.

> 7.  Exceptions

chapter 4 in the language reference.

> 8.  Built-in
>    8.1  Functions

chapter 2.1 in the library reference (titled "Built-in Functions")

>    8.2  Types

chapter 2.3 in the library reference (titled "Built-in Types")

so everything you asked for can be the language reference manual
and the first two chapters of the library reference manual, in pretty
much the same order as you wanted it (the exceptions chapter is
the exception)

> (i.e. not in a manual, but the library reference).

if a reference manual is not a manual, we have a terminology problem.

</F>





From fredrik at pythonware.com  Thu May 12 06:54:55 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 12 May 2005 12:54:55 +0200
Subject: TAKE_FOCUS
References: <428229E6.4040900@anvilcom.com>
Message-ID: <d5vc7d$eh3$1@sea.gmane.org>

"phil" wrote:

> WM_TAKE_FOCUS does not work on WinXP ??
> I was sure I had used that on win before.
> Works on Linux.
>
> I have a function I need to run when the window
> gets the focus. How do you do that in Tkinter
> on Win32?

binding the <FocusIn> event should work.

(and make sure that the takefocus option is set)

</F> 





From foobar at mystery.org  Mon May  9 18:43:37 2005
From: foobar at mystery.org (Sean Burke)
Date: Mon, 09 May 2005 22:43:37 GMT
Subject: Language documentation ( was Re: Computing Industry shams)
References: <1115509201.680334.140840@f14g2000cwb.googlegroups.com>
	<874qdezh76.fsf@kafka.homenet> <1415322.AzhuxSBQdk@yahoo.com>
Message-ID: <x78y2ot3zq.fsf@bolo.xenadyne.com>


alex goldman <hello at spamm.er> writes:

> vermicule wrote:
> 
> > 
> > What is so hard to understand ?
> > Should be perfectly clear even to a first year undergraduate.
> > 
> > As for "greedy" even a minimal exposure to Djikstra's shortest path
> > algorithm would have made the concept intuitive. And from memory,
> > that is the sort of thing done in Computing 101 and in  Data Structures
> > and Algorithms 101
> > 
> > It seems to me that you want the Python doc to be written for morons.
> > And that is not a valid complaint.
> 
> He's right actually. If we understand the term "greedy" as it's used in
> graph search and optimization algorithms, Python's RE matching actually IS
> greedy.

No, you're just confused about the optimization metric.
In regexes, "greedy" match optimizes for the longest match,
not the fastest.

And this is common regex terminology - man perlre and you will
find discussion of "greedy" vs. "stingy" matching.

-SEan



From fredrik at pythonware.com  Thu May 12 06:44:07 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 12 May 2005 12:44:07 +0200
Subject: Destructor Woes, was Advice needed on __del__
References: <d5o1s1$8h3$1@sea.gmane.org>	<d5obmp$cqh$1@sea.gmane.org>	<427FBAD4.3070004@anvilcom.com>	<d5ogv2$2k9$1@sea.gmane.org>	<42800279.3B26FFF3@pauahtun.org>	<mailman.244.1115687630.29826.python-list@python.org>	<DS1ge.87015$Tk7.5147767@phobos.telenet-ops.be><mailman.304.1115745700.29826.python-list@python.org>
	<PfDge.88591$rd1.5444651@phobos.telenet-ops.be>
Message-ID: <d5vbj6$cns$1@sea.gmane.org>

"flupke" wrote:

>> Then i got a tip that you can register a function that needs to be
>> called when the object is going to be deleted.
>> For instance to register a function __exit, you do this:

>> class line:
>>     def __init__(s,glob,argl,color=''):
>>         atexit.register(s.__exit)

> I don't know what's wrong in your example. Here it works (doesn't help
> you of course). I would first try with an easy example an try to test
> the atexit functionality like that. It seems that the problem you are
> having isn't related to the atexit part.

do you (or whoever gave you the tip) have the slightest idea what atexit does?

</F> 





From f.geiger at vol.at  Sat May 21 03:42:10 2005
From: f.geiger at vol.at (F. GEIGER)
Date: Sat, 21 May 2005 09:42:10 +0200
Subject: [pysqlite] How do I use pysqlite in a multi-threading env.?
References: <d6k0t9$rq2$1@news.hispeed.ch>
	<mailman.239.1116573867.8733.python-list@python.org>
Message-ID: <d6moo0$k1c$1@news.hispeed.ch>


"Gerhard Haering" <gh at ghaering.de> schrieb im Newsbeitrag
news:mailman.239.1116573867.8733.python-list at python.org...

I've completely rewritten the db handling stuff, which formerly did too much
behind the scenes (explicit is better than implicit...). Now everything
looks much better. No unexpected errors and - most important - locking works
as expected. I have no idea yet, what went wrong with the former (probably
more pythonic) solution. It always did it with MySQL as backend.

Anyway, I'm quite happy now, that I can work on a db, that is incorporated
into the app itself.

Thanks for your help, Gerhard! And, sorry for the troubles...

Kind regards
Franz GEIGER




From cdkrug at worldnet.att.net  Wed May  4 21:21:25 2005
From: cdkrug at worldnet.att.net (Charles Krug)
Date: Thu, 05 May 2005 01:21:25 GMT
Subject: Has anyone built a file reader for NIST IHEad?
Message-ID: <pyeee.180486$cg1.64784@bgtnsc04-news.ops.worldnet.att.net>

List:

I'm playing with some image algorithms and one of the examples discusses
fingerprint comparison.  

The NIST has fingerprint sample files for download, in NIST IHead
format.  Has anyone built a reader for that format?

Thanks


Charles



From steven.bethard at gmail.com  Thu May 26 16:22:04 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Thu, 26 May 2005 14:22:04 -0600
Subject: "...Learning with Python" ...a property that addition
	andmultiplication have...
In-Reply-To: <mailman.148.1117136083.18027.python-list@python.org>
References: <1117067025.233387.323910@z14g2000cwz.googlegroups.com>
	<mailman.148.1117136083.18027.python-list@python.org>
Message-ID: <no-dnY1qnoJxsgvfRVn-tA@comcast.com>

GMane Python wrote:
> string repetition can not repeat a value negative times:
> 'hello' * -3 is invalid.

Well, it's not invalid:

py> 'a' * -1
''
py> 'a' * -42
''

but you could definitely say that
     S * N1 == S * N2
does not imply that
     N1 == N2

STeVe


From jason.mobarak at gmail.com  Sun May  8 00:50:01 2005
From: jason.mobarak at gmail.com (Jason  Mobarak)
Date: 7 May 2005 21:50:01 -0700
Subject: Python Pseudo-Switch
In-Reply-To: <mailman.156.1115512603.29826.python-list@python.org>
References: <mailman.156.1115512603.29826.python-list@python.org>
Message-ID: <1115527801.791201.310760@g14g2000cwa.googlegroups.com>

James Stroud wrote:
> Hello All,
>
> Because of my poorly designing a database, I have recently found it
necessary
> to explore the wonders of the Python pseudo-switch:
>
> do_case = { "A" : lambda x: x["bob"],
>             "B" : lambda x: x["carol"],
>             "C" : lambda x: "Ted",
>             "D" : lambda x: do_something(x) }
>

class CaseThing:
  def pref_A (self, x):
    return x["bob"]
  def pref_B (self, x):
    return x["carol"]
  def pref_C (self, x);
    return "Ted"
  def pref_D (self, x)
    return do_something(x)
  def getThing (self, x):
    attr = getattr(self, 'pref_%s' % (x,))
    if attr is not None:
      return attr
    else:
      raise SomeError("Thing %s does not exist" % (x,))

my_thing = CaseThing().getThing(get_value_from_thin_air)(adict)

You can do something similar with method decorators for more complex
strings than what's allowed for python method names.

> my_thing = do_case[get_value_from_thin_air()](adict)
>
>
> How to handle this kind of thing when lambda is removed from the
language,
> beside the obvious def'ing those tiny little functions?
>
> James
>
> --
> James Stroud
> UCLA-DOE Institute for Genomics and Proteomics
> Box 951570
> Los Angeles, CA 90095
> 
> http://www.jamesstroud.com/



From correiajREMOVECAPS at hotmail.com  Sat May 21 13:56:31 2005
From: correiajREMOVECAPS at hotmail.com (J Correia)
Date: Sat, 21 May 2005 17:56:31 GMT
Subject: How to receive events (eg. user mouse clicks) from IE
References: <1116476411.853695.235670@g14g2000cwa.googlegroups.com>
	<428c3cbe$1_1@spool9-west.superfeed.net>
	<1116529345.146032.91880@f14g2000cwb.googlegroups.com>
	<428cf5a9$1_1@spool9-west.superfeed.net>
	<1116537405.495521.252570@f14g2000cwb.googlegroups.com>
	<428f5882$1_2@spool9-west.superfeed.net>
Message-ID: <jDKje.7423$wr.4173@clgrps12>

"Roger Upole" <rupole at hotmail.com> wrote in message
news:428f5882$1_2 at spool9-west.superfeed.net...
> There does appear to be some sort of conflict between the two event
> hooks.  I wasn't seeing it before since IE was getting google from my
> browser cache and it was coming up almost instantaneously.  As soon
> as I switched the URL to a page that loads slowly, I got the same
> result.
>
>    Adding win32gui.PumpWaitingMessages() to the wait loop
> seems to allow both event hooks to run without blocking each other.
>
>      Roger

I added that line to the wait loop and while it does indeed speed it
 up dramatically (in 10 tests: min = 13 sec; max = 33, ave ~ 20 secs)
it's still nowhere near the 1-2 secs it takes without hooking the
IE events.  I also can't explain the wide differences between min
and max times since they seem to occur randomly
(e.g. min occurred on 7th run, max on 4th).

I assume that that response time won't be adequate for the original
poster's needs, due to the slowdown in browsing for his users.

Jose







From siona at chiark.greenend.org.uk  Tue May 10 10:25:05 2005
From: siona at chiark.greenend.org.uk (Sion Arrowsmith)
Date: 10 May 2005 15:25:05 +0100 (BST)
Subject: Advice needed on __del__
References: <d5o1s1$8h3$1@sea.gmane.org> <d5obmp$cqh$1@sea.gmane.org>
	<mailman.232.1115672394.29826.python-list@python.org>
Message-ID: <5as*qedOq@news.chiark.greenend.org.uk>

=?ISO-8859-1?Q?Andr=E9_Roberge?=  <andre.roberge at gmail.com> wrote:
>If I need to have the user call Evil.destroy() as Evil
>is getting out of scope, it would miss the whole point
>of teaching about the natural way scope and namespace
>work.

The problem, it seems to me, is that in Python "scope" applies
to names, but you're trying to apply it to objects. A name going
out of scope shouldn't be assumed to have much of an impact on
the object it referred to, and by emphasising too close a link
between name and object I think you're more likely to run into
trouble later on.

As was pointed out upthread, Python isn't C++. (Speaking as
someone who's been bitten by a very similar issue due to Java
not being C++ either.)

-- 
\S -- siona at chiark.greenend.org.uk -- http://www.chaos.org.uk/~sion/
  ___  |  "Frankly I have no feelings towards penguins one way or the other"
  \X/  |    -- Arthur C. Clarke
   her nu become? se bera eadward ofdun hl?ddre heafdes b?ce bump bump bump


From blake.garretson at gmail.com  Wed May 25 10:44:58 2005
From: blake.garretson at gmail.com (Blake Garretson)
Date: Wed, 25 May 2005 10:44:58 -0400
Subject: Localized Type Inference of Atomic Types in Python
In-Reply-To: <4293B4A6.8030002@ocf.berkeley.edu>
References: <4293B4A6.8030002@ocf.berkeley.edu>
Message-ID: <6d1f445d05052507446cb33e54@mail.gmail.com>

On 5/24/05, Brett C. <bac at ocf.berkeley.edu> wrote:
> 
> My thesis, "Localized Type Inference of Atomic Types in Python", was
> successfully defended today for my MS in Computer Science at the 
> California
> Polytechnic State University, San Luis Obispo. With that stamp of approval 
> I
> am releasing it to the world. You can grab a copy at
> http://www.drifty.org/thesis.pdf .
> 

That is one beautiful document. Seriously nice LaTeX work here. The content 
is nice too (mostly over my head), but I thoroughly enjoyed the beautiful 
typesetting, TOC, PDF outline, links, footnotes, etc.

-- 
Blake T. Garretson --- http://blakeg.net
-------------- next part --------------
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From rschroev_nospam_ml at fastmail.fm  Sun May  1 06:37:45 2005
From: rschroev_nospam_ml at fastmail.fm (Roel Schroeven)
Date: Sun, 01 May 2005 10:37:45 GMT
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <zX%ce.78213$ft1.5056576@phobos.telenet-ops.be>
References: <d4u60o$akh$1@news2.netvision.net.il>
	<mailman.47.1114818531.14961.python-list@python.org>
	<1114924100.296223.114020@g14g2000cwa.googlegroups.com>
	<1114927892.321086.60190@z14g2000cwz.googlegroups.com>
	<zX%ce.78213$ft1.5056576@phobos.telenet-ops.be>
Message-ID: <Zj2de.78345$a42.5091422@phobos.telenet-ops.be>

Roel Schroeven wrote:

> Dan Bishop wrote:
> 
> 
>>Dan Bishop wrote:
>>
>>Correction: Now I'm stuck on Level 11.  I think I'm supposed to do
>>something with the pixels in the image, but what?
> 
> 
> Me too.

There's a new image on the website now (still the same name though); I 
solved the riddle now :-)

There's no level 12 yet though.


-- 
If I have been able to see further, it was only because I stood
on the shoulders of giants.  -- Isaac Newton

Roel Schroeven


From awb at fluent.com  Thu May 19 12:53:11 2005
From: awb at fluent.com (Andrew Bushnell)
Date: Thu, 19 May 2005 12:53:11 -0400
Subject: SSL (HTTPS) with 2.4
In-Reply-To: <1116521081.100575.70720@f14g2000cwb.googlegroups.com>
References: <1116392416.139727.84630@g49g2000cwa.googlegroups.com>	<428AD4D1.8030405@v.loewis.de>	<1116396878.995648.206820@g49g2000cwa.googlegroups.com>	<1116406256.213128.68180@f14g2000cwb.googlegroups.com>	<grGie.3984$uR4.2802@newsread2.news.atl.earthlink.net>	<1116422715.320683.228810@g49g2000cwa.googlegroups.com>	<1116424363.953180.79260@g47g2000cwa.googlegroups.com>	<1116424660.917136.79680@g47g2000cwa.googlegroups.com>	<428b7bc5$0$7346$9b622d9e@news.freenet.de>	<1116463961.944713.210860@g49g2000cwa.googlegroups.com>	<mailman.208.1116513082.8733.python-list@python.org>
	<1116521081.100575.70720@f14g2000cwb.googlegroups.com>
Message-ID: <428CC477.6070508@fluent.com>

Thanks for the update. I will/can keep you posted. I know for a fact we 
use a Squid proxy which sounds like what you are using. I am going to 
check out the faq you sent and see what it comes up with. I have also 
been perusing the net a bit and looking at other client packages and see 
if they work, such as cURL etc.

Thanks,

Andrew

Bloke wrote:
> Andrew,
> 
> It seems I'm not the only one going nuts here.  I have just spent the
> last 4 hrs stepping through the code in the debugger.  It seems to get
> stuck somewhere in the socket module (when it calls ssl) but haven't as
> yet figured out exactly where.
> 
> I am _very_ interested to find that you have the same prob with a
> non-authenticating proxy.  I had considered I was doing something wrong
> with the authentication, but from what you say, and from what I have
> deduced from the code, it is not the authentication that is at fault.
> 
> Like you, a standard browser works fine, so I'm inclined to think there
> is something buggy with the way the sockets module talks to the proxy.
> There has been some suggestion that it may me a 'Microsoftish' proxy
> which is at fault, but I believe it is a Squid proxy our company uses.
> 
> There is an interesting note here (
> http://www.squid-cache.org/Doc/FAQ/FAQ-11.html  setcion 11.34 )
> regarding malformed https requests sent through Squid with buggy
> clients.  It may be worth looking into.
> 
> Anyway, if you have any luck, _please_ let me know - I'm getting
> desparate.
> 

-- 
************************************
Andrew Bushnell
Lead Development Engineer
Fluent Inc.
10 Cavendish Court
Centerra Resource Park
Lebanon, NH  03766
awb at fluent.com
Phone: 603-643-2600, ext. 757
Fax: 603-643-1721
www.fluent.com
************************************


From rganesan at myrealbox.com  Tue May  3 00:03:47 2005
From: rganesan at myrealbox.com (Ganesan Rajagopal)
Date: 03 May 2005 09:33:47 +0530
Subject: Python Challenge ahead [NEW] for riddle lovers
References: <d4u60o$akh$1@news2.netvision.net.il>
	<mailman.22.1115040588.6583.python-list@python.org>
	<xkvhis21ohyx.fsf@cisco.com>
	<mailman.39.1115056020.6583.python-list@python.org>
Message-ID: <xkvhacndnefw.fsf@cisco.com>

>>>>> "darren" == darren kirby <bulliver at badcomputer.org> writes:

> quoth the Ganesan Rajagopal:
>> I am stuck on level 3. I've tried every re that I can think of. Some body
>> give me a clue.
>> 
>> Ganesan
>> 
>> --
>> Ganesan Rajagopal

>>>> t = /text of page source.../
>>>> re.findall('[a-z][A-Z]{3}[a-z]{1}[A-Z]{3}[a-z]', t)

> You should get ten results. Consider all ten together to get your
> solution...

Ah, thanks. I tried having both sides identical, no results. Then I tried
the above re but stopped at the first result :-(.

Ganesan

-- 
Ganesan Rajagopal




From mcaloney at cs.queensu.ca  Tue May  3 22:23:57 2005
From: mcaloney at cs.queensu.ca (Chris McAloney)
Date: Tue, 3 May 2005 22:23:57 -0400
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <mailman.126.1115152118.6583.python-list@python.org>
References: <d4u60o$akh$1@news2.netvision.net.il>
	<mailman.47.1114818531.14961.python-list@python.org>
	<3dg5isF6qe1nhU1@news.dfncis.de>
	<d4v1an$j7q$1@sea.gmane.org> <1f7befae05043000165448b8d@mail.gmail.com>
	<mailman.55.1114846630.14961.python-list@python.org>
	<Pine.SOL.4.33.0505031353330.17143-100000@innovate>
	<mailman.126.1115152118.6583.python-list@python.org>
Message-ID: <Pine.SOL.4.33.0505032212120.28656-100000@innovate>

On Tue, 3 May 2005, Tim Peters wrote:

> Hmm.  I've been staring at that one 18 hours a day since last Friday,

I'm very relieved to hear that I'm not the only one, then.

> > I've decoded the first message to get the hint for the next level.
>
> It's not nice to humilate your elders in public, Chris.

No humiliation was intended -- I was simply trying to use this fact as a
form of currency to hopefully barter myself a useful hint. ;-)

-chris



From fredrik at pythonware.com  Mon May  9 08:37:10 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Mon, 9 May 2005 14:37:10 +0200
Subject: Exception in Python 2.3.3 Interpreter
References: <1114434259.853654.272420@z14g2000cwz.googlegroups.com>
	<d5n76t$pe0$2@news.mch.sbs.de>
Message-ID: <d5nl45$qmu$1@sea.gmane.org>

"Saravanan D" <saravanan.d at siemens.com> wrote:

> 03 023ffaa4 1e013182 00000000 055b1250 00637470 python23!cmp_outcome(int op
> = 88026108, struct _object * v = 0x00000001, struct _object * w =
> 0x00000000)+0xa9 [F:\Python-2.3.3\Python-2.3.3\Python\ceval.c @ 3880]
> 04 023ffb18 1e016ba4 014f3318 00000002 0099f170 python23!eval_frame(struct
> _frame * f = 0x053f2bfc)+0x542 [F:\Python-2.3.3\Python-2.3.3\Python\ceval.c
> @ 1965]
> 05 023ffb30 1e016a69 0099f170 023ffb7c 00000002
> python23!fast_function(struct _object * func = <Memory access error>, struct
> _object *** pp_stack = <Memory access error>, int n = <Memory access error>,
> int na = <Memory access error>, int nk = <Memory access error>)+0x94

the above doesn't look very healthy.  does your application involve
non-standard extensions (including extensions you've written your-
self)?  does the extensions contain callbacks into Python code?

</F>





From gvandyk.nospam at agileworks.net  Tue May 31 01:57:05 2005
From: gvandyk.nospam at agileworks.net (Gerrit van Dyk)
Date: Tue, 31 May 2005 07:57:05 +0200
Subject: eric3 question
In-Reply-To: <MSGID_2=3A5025=2F3.131_429bd668@fidonet.org>
References: <MSGID_2=3A5025=2F3.131_429bd668@fidonet.org>
Message-ID: <d7gubi$98v$1@ctb-nnrp2.saix.net>

Alexander Zatvornitskiy wrote:
> Hello All!
> 
> I'am using eric3 IDE under win32 (snapshot 2005-04-10), and have a trouble. I
> use this code:
>     print "enter q to quit, or smthing else to continue"
>     while not sys.stdin.readline()=="q":
>         smthing(else)
> 

Try using raw_input() instead of the sys.stdin.readline(). raw_input() 
is the preferred way of getting console input.

Like this:
    print "enter q to quit, or smthing else to continue"
    while not raw_input() == 'q':
       smthing(else)

Or you can do it this way:
    while not raw_input("enter q to quit, or smthing else to continue: ")
       smthing(else)

Gerrit van Dyk


From jello at comics.com  Fri May  6 08:45:48 2005
From: jello at comics.com (rzed)
Date: Fri, 06 May 2005 08:45:48 -0400
Subject: Setting the corner color in rotated PIL images
References: <Xns96494A613BC4Fjreeder@63.223.7.253>
	<mailman.91.1115117893.6583.python-list@python.org>
Message-ID: <Xns964E594DFD124jreeder@63.223.7.253>

[Following up]

> ----- Original Message -----
> From: "rzed" <jello at comics.com>
> Newsgroups: comp.lang.python
> To: <python-list at python.org>
> Sent: Sunday, May 01, 2005 1:17 PM
> Subject: Setting the corner color in rotated PIL images
> 
> 
>> I'm using PIL to generate some images which may be rotated at
>> the user's option. When they are rotated, the original image is
>> cropped in the new image (which is fine), and the corners are
>> black (which is not, in this case). I can't find any documented
>> way to change the default fill color (if that's what it is) for
>> the corners, and PIL also doesn't seem to support a flood fill.
>> I have created a flood fill in Python, which works but which
>> markedly slows image generation.
>>

"Anthra Norell" <anthra.norell at tiscalinet.ch> wrote in
news:mailman.91.1115117893.6583.python-list at python.org: 

> I just had the same problem the other day. I solved it by
> starting out with an image large enough to retain enough white
> area following the rotation. 
> 
> Frederic
> 

I found another method that doesn't require the larger size and 
cropping :) but does require two copies of the original image :( 
(sort of).

I copy the image and rotate the copy, then I create an all-white 
image of the same size as the original and rotate it by the same 
amount. Then I use ImageChops composite() to combine the rotated 
copy, the original copy, and the black-and-white version 
(parameters in that order). The black corners of the b/w version 
serve as a mask to paste the original corners onto the copy. 

It still seems like a lot of trouble to go to, but I don't think 
there is a ready solution otherwise. I think there's a C-code 
memset of all zeroes that underlies the black corners thing, and 
that's not likely to change.

-- 
rzed


From franz.steinhaeusler at utanet.at  Tue May  3 02:32:56 2005
From: franz.steinhaeusler at utanet.at (Franz Steinhaeusler)
Date: Tue, 03 May 2005 08:32:56 +0200
Subject: Which IDE is recommended?
References: <426f90ac$1_2@rain.i-cable.com>	<9f7v619jhigbtoksslnr88f4idoc6ejvu3@4ax.com>
	<1115039282.069052.287920@o13g2000cwo.googlegroups.com>
	<mailman.67.1115087196.6583.python-list@python.org>
Message-ID: <1l6e71ph78oui1a50udo2cf50eic6m47q4@4ax.com>

On Mon, 02 May 2005 19:25:57 -0700, Bryan <belred at gmail.com> wrote:

>dcrespo wrote:
>>>But I personally recommend DrPython. (Not only, I'm a member of the
>>>project).
>> 
>> 
>> I saw this message and downloaded DrPython. It's very good: I like the
>> class/functions browser while I'm coding... but I can't find the
>> autocompletion feature you talk, and I think this feature is very
>> important. Where it is?
>> 
>> Daniel
>> 
>
>i saw this message too and i've been using it for the last couple days, but i 
>don't see the class/functions browser you are talking about.  where is it???
>
>thanks,
>
>bryan

Did you try: Menu View => "Toggle Source Browser"?

-- 
Franz Steinh?usler
http://drpython.sourceforge.net/
http://mitglied.lycos.de/drpython/


From rrr at ronadam.com  Mon May  9 23:19:33 2005
From: rrr at ronadam.com (Ron Adam)
Date: Mon, 09 May 2005 23:19:33 -0400
Subject: __brace__ (PEP?)
In-Reply-To: <200505081629.03520.jstroud@mbi.ucla.edu>
References: <200505081629.03520.jstroud@mbi.ucla.edu>
Message-ID: <42802845.4050109@ronadam.com>

James Stroud wrote:
> Hello All,
> 
> If "__call__" allows anobject() and "__getitem__" allows anobject[arange], why 
> not have "__brace__" (or some other, better name) for anobject{something}. 
> Such braces might be useful for cross-sectioning nested data structures:
> 
> anary = [[1,2,3],[4,5,6]]
> 
> anary{2}  ==> [3,6]

I could see possibly using it as a user defined container designator, 
but it wouldn't quite work like your examples.

If you used the leading name in the same way as the 'r' in raw strings 
to differentiate a new container type.

class j(User_Container):
     # what ever news/inits needed
     def anary(self, arg):
         # code for anary method

jamesnewcontainer = j{[1,2,3],[4,5,6]}

jamesnewcontainer.anary(2)   ==> [3,6]

 >>>jamesnewcontainer
j{[1,2,3],[4,5,6]}

And this would work as well.

 >>>j{[4,3,2],[1,2,3],[5,4,3]}.anary(1)
[3,2,4]


It doesn't add anything new, but it could make working with custom 
storage objects easier.


> Also, if this exists already, I apologize because I have not seen it in any 
> Python code before and I wouldn't know what to call it for googling.

There might be cases of dictionary use ambiguity.  But I can't think of 
any at the moment.


_Ron




From bill.mill at gmail.com  Mon May  9 13:41:57 2005
From: bill.mill at gmail.com (Bill Mill)
Date: Mon, 9 May 2005 13:41:57 -0400
Subject: Does anybody know the status of PyCon recordings?
Message-ID: <797fe3d40505091041501d1f3d@mail.gmail.com>

Hey all,

There was a lot of talk on this list about recording pycon 2005 talks,
but I never saw any messages saying that they'd actually been
recorded. The wiki page (
http://www.python.org/moin/PyConDC2005/TalkRecording ) doesn't give
links to any recordings.

Does anybody know if these recordings exist and, if so, where they are?

Peace
Bill Mill
bill.mill at gmail.com


From mwm at mired.org  Thu May 26 18:04:53 2005
From: mwm at mired.org (Mike Meyer)
Date: Thu, 26 May 2005 17:04:53 -0500
Subject: Pyrex: step in for loop
References: <3fmtshF8hj7vU1@individual.net>
Message-ID: <86oeaxwsmy.fsf@guru.mired.org>

"Luis P. Mendes" <luis_lupe2XXX at netvisaoXXX.pt> writes:

> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> Hi,
>
> I'm trying to improve speed in a module and substituted the pythonic
> 'for in range()' for 'for i from min < i < max:'
>
> But, I need to define a step for the i variable.  How can I do it?
>
> for example, how do I iterate through 80000 to 140000 with step 10000?

guru% pydoc range
Help on built-in function range in module __builtin__:

range(...)
    range([start,] stop[, step]) -> list of integers
    
    Return a list containing an arithmetic progression of integers.
    range(i, j) returns [i, i+1, i+2, ..., j-1]; start (!) defaults to 0.
    When step is given, it specifies the increment (or decrement).
    For example, range(4) returns [0, 1, 2, 3].  The end point is omitted!
    These are exactly the valid indices for a list of 4 elements.

so it's

for i in range(80000, 140000, 10000): ...

    <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From timothy at open-networks.net  Mon May 16 19:28:08 2005
From: timothy at open-networks.net (Timothy Smith)
Date: Tue, 17 May 2005 09:28:08 +1000
Subject: Python on a public library computer
In-Reply-To: <87r7g6rbz0.fsf@pobox.com>
References: <1116069664.779281.320540@g47g2000cwa.googlegroups.com>
	<87r7g6rbz0.fsf@pobox.com>
Message-ID: <42892C88.6090609@open-networks.net>

John J. Lee wrote:

>"anton.vredegoor at gmail.com" <anton.vredegoor at gmail.com> writes:
>
>  
>
>>Here's my situation:
>>
>>I'm typing this in a public library on a computer with OS windows 2000
>>server. I can run Internet explorer, word, excel and powerpoint, that's
>>it. Maybe java, but it seems to be flaky.
>>
>>I want to run python scripts from this computer. At home I have a
>>multi-computer network (from better times) but no internet access
>>    
>>
>[...]
>
>Why not Jython?
>
>
>John
>  
>
how locked down is the computer? there's a few (brave) public access 
unix shell providers out there. if you could run telnet you could use them



From jerf at jerf.org  Thu May  5 23:02:06 2005
From: jerf at jerf.org (Jeremy Bowers)
Date: Thu, 05 May 2005 23:02:06 -0400
Subject: How to detect a double's significant digits
References: <1115314620.902071.323410@f14g2000cwb.googlegroups.com>
	<dOtee.706030$w62.64217@bgtnsc05-news.ops.worldnet.att.net>
	<pan.2005.05.05.20.32.38.680014@jerf.org>
	<117lmgrjssnlf04@corp.supernews.com>
Message-ID: <pan.2005.05.06.03.02.05.806769@jerf.org>

On Fri, 06 May 2005 02:44:43 +0000, Grant Edwards wrote:

> On 2005-05-05, Jeremy Bowers <jerf at jerf.org> wrote:
> 
>> Since I think he mentioned something about predicting how much space it
>> will take to print out, my suggestion is to run through whatever
>> printing routines there are and get a string out,
> 
> A step which will require him to tell the printing routine how many digits
> he wants printed.

Not necessarily; consider the str() of a float in Python, especially given
the "significant digits" aspect (it may be ill-defined, but I can think of
several well-defined ways to mean that, where str() embodies one of them).
The easiest way to tell how long the number will be when str prints it out
is to simply ask it.

In C++, this may be harder, as your output software may insist on
rendering everything directly, with no way to reach in and tell what it
did. Imagine the standard IOStreams, without the ability to stream into a
string. Now it's a lot harder to tell. So if you've got something "smart"
like the default str() in Python, you may not be able to tell in advance
what it is going to do, short of trying to manually reverse engineer it.
I've tried that a few times, and in each instance, I can get 95-99%... but
I never quite make it to 100%, usually because I find a bug somewhere and
can't figure out how to characterize and replicate it.

(The biggest of these so far was when I tried to reconstruct Tk's wrapping
in a text widget, so I could tell how many screen lines the given piece of
text I produced would consume, whereupon I discovered Tk didn't correctly
wrap all Unicode characters... it correctly (as far as I could see)
reported their widths, but happily let the characters run right off the
right edge of the widget under certain circumstances I could never
characterize without putting in even more effort than I cared to. The bugs
aren't always *important*, one can imagine the opposite problem of
wrapping a little too quickly, and it could be years before anyone notices
if it's just a few pixels off in the right direction, but it'll still
screw you up if you try to replicate it.)



From lam at pcigeomatics.com  Mon May  2 09:22:44 2005
From: lam at pcigeomatics.com (Thierry Lam)
Date: Mon, 2 May 2005 09:22:44 -0400
Subject: Reading output from standard out
Message-ID: <BF0BED91AA17F448A3A927857E11FC640170642D@thor.pcigeomatics.com>

Let's say I have a python program which prints output to standard out,
let's call it HelloApp.  How do I capture these outputs from the python
GUI tkinter? For example, I want to call HelloApp from my GUI program
and I want to send the output live to a tkinter text area.

 

Thanks

Thierry

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From qwweeeit at yahoo.it  Mon May  9 14:55:21 2005
From: qwweeeit at yahoo.it (qwweeeit at yahoo.it)
Date: 9 May 2005 11:55:21 -0700
Subject: Strip white spaces from source
In-Reply-To: <mailman.195.1115635650.29826.python-list@python.org>
References: <1115590492.587606.108810@z14g2000cwz.googlegroups.com>
	<mailman.195.1115635650.29826.python-list@python.org>
Message-ID: <1115664921.611530.85510@f14g2000cwb.googlegroups.com>

Hi Richie,
thank you for your answer.
Your solution is interesting but does not take into account some white
spaces (like those after the commas, before or after mathematical
operands etc...).
Besides that I'm a almost a newbie in Python, and I have the very old
programmers' habits (I don't use classes...).

But I have solved nevertheless my problem (with the help of Alex
Martelli and his fab method of
"tokenize.generate_tokens(cStringIO.StringIO(string).readline"   I have
read in a clp answer of Alex to a question of Gabor Navy).

If someone is interested (I think nobody...) I can give my solution.

Bye.



From jabel at plus.net  Fri May 27 04:32:16 2005
From: jabel at plus.net (John Abel)
Date: Fri, 27 May 2005 09:32:16 +0100
Subject: Running a python program during idle time only
In-Reply-To: <4296D2E3.8060605@hathawaymix.org>
References: <1116637560.499307.28700@o13g2000cwo.googlegroups.com>	<mailman.7.1116821147.18027.python-list@python.org>	<1116869538.611233.264960@g14g2000cwa.googlegroups.com>	<5j64x9gz09.fsf@idiom.com>
	<4296D2E3.8060605@hathawaymix.org>
Message-ID: <4296DB10.7070001@plus.net>

Shane Hathaway wrote:

>Mike Meyer wrote:
>  
>
>>On a completely different topic, this looks like the wrong way to solve
>>the problem. You want to update a search engine based on changes to the
>>underlying file system. The right way to do this isn't to just keep
>>rescanning the file system, it's to arrange things so that your scanner
>>gets notified of any changes made to the file system. I did something like 
>>this for my web site search engine, but that's hooked into the SCM that's
>>used for propogating changes to the web site. I know someone is working
>>on patches to the FreeBSD kernel to make this kind of thing work. It would
>>seem that some of the "backup" facilities that worked by keeping a mirror
>>of the disk on separate media would have to have used such hooks, but maybe
>>not.
>>    
>>
>
>I think you're right that filesystem change notification is what Carlos
>needs.
>
>If you're interested in using Linux, Carlos, "inotify" is a new kernel
>module that can notify your program of filesystem changes.  It's not
>folded into the mainline kernel yet, but it's a clean patch.
>
>http://www.edoceo.com/creo/inotify/
>
>I don't know if Windows has anything like it.  I'd be interested to hear
>if it does.
>
>Shane
>  
>
As an alternative to inotify there's this 
http://oss.sgi.com/projects/fam/, with various libraries ( Perl, Python, 
etc ).

J


From anybutbush at hotmail.com  Wed May 11 11:59:44 2005
From: anybutbush at hotmail.com (hans)
Date: 11 May 2005 08:59:44 -0700
Subject: tes, no reply
In-Reply-To: <1115824563.613661.169620@g47g2000cwa.googlegroups.com>
References: <1115824563.613661.169620@g47g2000cwa.googlegroups.com>
Message-ID: <1115827184.537831.312210@g49g2000cwa.googlegroups.com>

zzzzzzzzzzzzzzzzzzzzz



From Sebastien.Boisgerault at gmail.com  Wed May 11 15:54:10 2005
From: Sebastien.Boisgerault at gmail.com (=?iso-8859-1?q?S=E9bastien_Boisg=E9rault?=)
Date: 11 May 2005 12:54:10 -0700
Subject: optparse
Message-ID: <1115841250.764632.296820@g47g2000cwa.googlegroups.com>


Any idea why the 'options' object in

# optparse stuff
(options, args) = parser.parse_args()

is not/couldn't be a real dict ? Or why at least it
does not support dict's usual methods ?

The next move after a parse_args is often to call
a method 'do_stuff' with the args and options and
I'd like to use a call such as:

do_stuff(args, **options)

This function signature is handy if you also need
sometimes to call 'do_stuff' from the Python interpreter.

Cheers,

SB



From bogus@does.not.exist.com  Thu May 19 09:45:02 2005
From: bogus@does.not.exist.com ()
Date: Thu, 19 May 2005 13:45:02 -0000
Subject: No subject
Message-ID: <mailman.10.1572215368.3356.python-list@python.org>

#! rnews 2056
Newsgroups: comp.lang.python
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From: Harry George <harry.g.george at boeing.com>
Subject: Re: ElementTree and xsi to xmlns conversion?
X-Nntp-Posting-Host: cola2.ca.boeing.com
Content-Type: text/plain; charset=us-ascii
Message-ID: <xqxsm0jjql1.fsf at cola2.ca.boeing.com>
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Sender: hgg9140 at cola2.ca.boeing.com
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References: <d6gbo5$fm6$1 at vegh.ks.cc.utah.edu> <mailman.193.1116487191.8733.python-list at python.org>
Mime-Version: 1.0
Date: Thu, 19 May 2005 13:24:58 GMT
Xref: news.xs4all.nl comp.lang.python:378110

"Fredrik Lundh" <fredrik at pythonware.com> writes:

[snip]
> 
> are you sure?  the prefix shouldn't matter; it's the namespace URI that's important.
> if you're writing code that depends on the namespace prefix rather than the name-
> space URI, you're not using namespaces correctly.  when it comes to namespaces,
> elementtree forces you to do things the right way:
> 
>     http://www.jclark.com/xml/xmlns.htm
> 
> (unfortunately, the XML schema authors didn't understand namespaces so they
> messed things up:
>     http://www.w3.org/2001/tag/doc/qnameids-2002-04-30
> to work around this, see oren's message about how to control the namespace/prefix
> mapping.  in worst case, you can manually insert xsi:-attributes in the tree, and rely on
> the fact that the default writer only modifies universal names)
> 
> </F> 
> 
> 
> 

First, thanks for ElementTree and cElementTree.  Second, I've read the
docs and see a lot of examples for building trees, but not a lot for
traversing parsed trees.  Questions:

1. Is there a good idiom for namespaces?  I'm currently doing things like:

UML='{href://org.omg/UML/1.3}'
....
packages=ns2.findall(UML+'Package')

2. Is there a similar idiom which works for Paths?   I've tried:

packages=pkg1.findall(UML+'Namespace.ownedElement/'+UML+'Package')

but haven't found the right combination, so I do step-at-a-time descent.

-- 
harry.g.george at boeing.com
6-6M21 BCA CompArch Design Engineering
Phone: (425) 294-4718


From vcsekhar007 at yahoo.com  Sat May  7 08:47:11 2005
From: vcsekhar007 at yahoo.com (Vijay Chandra Sekhar Parepalli)
Date: Sat, 7 May 2005 05:47:11 -0700 (PDT)
Subject: Outlook-Python Issue
Message-ID: <20050507124711.12414.qmail@web60712.mail.yahoo.com>

     
Hi there,

           Can any one please help in getting me Python-Outlook programming issueclarified.

 

I just wanted to do the following using Python:

1)Open a New Oulook Mail Window

2) Fill the field: to-email address and Write somebody to it.(I DON#8217;t want to send it automatically)

 

That#8217;s all. But, I am getting an error when I try toinitiate the MAPI-Session using 

    object = win32com.client.Dispatch("Outlook.Application")

    ns =object.GetNamespace("MAPI")

    mapi =win32com.client.dynamic.Dispatch("MAPI.session")

 

Error I see is :

  File "C:\Program Files\GNU\WinCvs2.0\Macros\TemplateCvsMacro.py", line 140, in SendMAPIMail

   mapi = win32com.client.Dispatch("MAPI.session")

  File"C:\Python24\Lib\site-packages\win32com\client\__init__.py", line 95,in Dispatch

   dispatch, userName = dynamic._GetGoodDispatchAndUserName(dispatch,userName,clsctx)

  File"C:\Python24\Lib\site-packages\win32com\client\dynamic.py", line 91,in _GetGoodDispatchAndUserName

   return (_GetGoodDispatch(IDispatch, clsctx), userName)

  File"C:\Python24\Lib\site-packages\win32com\client\dynamic.py", line 79,in _GetGoodDispatch

   IDispatch = pythoncom.CoCreateInstance(IDispatch, None, clsctx,pythoncom.IID_IDispatch)

pywintypes.com_error:(-2147221005, 'Invalid class string', None, None)

 

Can any one please help me in this regard.

 

Thanks,

Sekhar

 


__________________________________________________
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From usenet at gungfu.de  Sun May 15 09:52:39 2005
From: usenet at gungfu.de (=?iso-8859-1?q?Steffen_Gl=FCckselig?=)
Date: 15 May 2005 06:52:39 -0700
Subject: Precision?
Message-ID: <1116165159.269252.117830@g14g2000cwa.googlegroups.com>

Hello,

I've just wanted to check Python's abilities as a calculator and this
is what came out:

>>> 1.0 + 3.0 + 4.6
8.5999999999999996

Ehm, how could I get the intuitively 'correct' result of - say - 8.6?
;-)



best regards
Steffen



From paul at f7.net  Mon May 30 11:32:03 2005
From: paul at f7.net (Paul English)
Date: Mon, 30 May 2005 11:32:03 -0400
Subject: No subject
Message-ID: <200505301532.j4UFW3D31310@f7.net>

Thanks for sending me email, but please click the following link
or else my mail server will not deliver your message to me:

  http://blade.f7.net/cr.cgi/pme/python-list at python.org.1

I use this system to prevent spam. Once you click the above
link, you will be added to the whitelist and not be challenged again.

Thanks,
Paul

--
ps, see http://blade.f7.net for more information about this system.


From eurleif at ecritters.biz  Tue May 31 15:11:08 2005
From: eurleif at ecritters.biz (Leif K-Brooks)
Date: Tue, 31 May 2005 19:11:08 GMT
Subject: working with pointers
In-Reply-To: <d7ibjg$8en$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
References: <d7iapk$6ck$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
	<JJSdnXLcZdUsLQHfRVn-1w@comcast.com>
	<d7ibjg$8en$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
Message-ID: <gF2ne.10406$5I5.855769@newshog.newsread.com>

Michael wrote:
> a=2
> b=a
> b=0


That's more or less equivalent to this C++ code:

int *a;
int *b;
a = new int;
*a = 2;
b = a;
b = new int;
*b = 0;


From tjreedy at udel.edu  Sun May 15 14:54:12 2005
From: tjreedy at udel.edu (Terry Reedy)
Date: Sun, 15 May 2005 14:54:12 -0400
Subject: Precision?
References: <1116165159.269252.117830@g14g2000cwa.googlegroups.com>
Message-ID: <d685s1$f4f$1@sea.gmane.org>


"Steffen Gl?ckselig" <usenet at gungfu.de> wrote in message 
news:1116165159.269252.117830 at g14g2000cwa.googlegroups.com...
>>>> 1.0 + 3.0 + 4.6
> 8.5999999999999996
>
> Ehm, how could I get the intuitively 'correct' result of - say - 8.6?

>>> str(1.0+4.6+3.0)
'8.6'

See Lib Ref 2, Builtin functs, repr() and str(), Lan Ref (or tutorial) 
section on % formating, and probably a few FAQ entries.

Terry J. Reedy





From tjreedy at udel.edu  Wed May 11 22:08:21 2005
From: tjreedy at udel.edu (Terry Reedy)
Date: Wed, 11 May 2005 22:08:21 -0400
Subject: Python Documentation (vs PHP stuff)
References: <d5tjng$kae$1@sea.gmane.org><mailman.390.1115838298.29826.python-list@python.org><d5to4d$895$1@solaris.cc.vt.edu>
	<d5tqi2$d8l$2@sea.gmane.org>
Message-ID: <d5udc6$uk7$1@sea.gmane.org>


"Christopher J. Bottaro" <cjbottaro at alumni.cs.utexas.edu> wrote in message 
news:d5tqi2$d8l$2 at sea.gmane.org...
> rbt wrote:
>> Because PHP is such a 'thrown together' and 'bolted-on' language. If it
>> didn't have *outstanding* documentation (which it does BTW), no one
>> could even begin to understand how they got from a little HTML language
>> to a kinda/sorta OO language.
>>
>> PHP is showing its age... thanks to its docs, it's still *extremely*
>> useful.
>
> Exactly!!  See thats what I'm saying.  I _think_ its widely accepted that
> PHP has awesome documentation.  And like rbt said, that makes it 
> extremely
> useful.  Why can't Python have documentation like that?  The language is
> awesome, it just needs documentation of the same quality.

Because of these two posts (and a few others) extolling the PHP 
documentation, I decided to take a look for myself to see what the fuss was 
about and whether I could get any ideas on how to improve Python's docs.  I 
typed "PHP manual" in my Google bar and the first link was just what I 
hoped for, the PHP site manual.

First observation: the PHP manual is a combined 'kitchen-sink' volume that 
combines material that Python separates: tutorial, language reference, 
library reference, and doc for some 3rd party packages.  Hmm, perhaps the 3 
official volumes would be better integrated if combined into one manul with 
three parts.  But the difference itself between one volume with many parts 
and many volume is not critical in itself.

Next, I picked the Array chapter in the Functions section.  It starts with 
a Unix man-style intro.  Ok, but not 'awsome'.  Next come the defined 
constants, which don't mean much out of the context of the function where 
used, so this part functions as an index of names.  Then there is a long 
alphabetical list of function name/links with a one-line description of 
each.  Gee, there seem to be a lot of different sort functions.

Finally, 80% of the chapter/page consists of a thrown-together mish-mash of 
unsorted. unedited comments and questions.  Some seem like the equivalent 
of Python cookbook entries, but others are like run-of-the mill comp.lang 
postings.  So the Python equivalent of this 'document' would include the 
Python Cookbook, the Python Wiki, and some of the c.l.p archives.

Onward to the page for sort(), which bizarrely (to me) rekeys the 'array'. 
Then there is a cross-reference to the 9 other sort pages.  Is there, I 
wonder, anyplace where all 10 sort functions are discussed together?  This 
time, 90% of the page is user junk.  Randomly clicking down, I find someone 
complaining about sort dumping his keys, just as the top entry said (but 
without the big warning box that such data destruction needs).  Sorry, PHP 
doc fans: to me, this sort of  inflated, noisey bloatware is wretched, not 
outstanding.

Conclusion 1: if PHP is anything as awful as the manual, it is not for me.

Conclusion 2: the somewhat spare style of the Python docs matches the 
somewhat spare style of the language itself.  (My goodness, only one list 
sort method!).  Since this style agrees with me, I would not want it to 
change too much.

Conclusion 3: some people would apparently be happier with the Python docs 
if they were combined into one Python Manual.  This could be done as a 
virtual anthology by writing a combined Table of Contents (with links) and 
an Introduction discussing the various 'Parts' and their 
interrelationships.  It would not have to be limited to PSF material 
either.  I might even take a stab at it if I ever feel sufficiently 
ambitious and energetic.

Terry J. Reedy





From bronger at physik.rwth-aachen.de  Sat May 21 05:14:01 2005
From: bronger at physik.rwth-aachen.de (Torsten Bronger)
Date: Sat, 21 May 2005 11:14:01 +0200
Subject: IDLE 1.0.5 crashs on Windows
References: <87ekc1ymu8.fsf@wilson.rwth-aachen.de>
Message-ID: <87acmpym92.fsf@wilson.rwth-aachen.de>

Hall?chen!

Torsten Bronger <bronger at physik.rwth-aachen.de> writes:

> I've installed Python 2.3.5, IDLE 1.0.5 on a Win2k box and have
> fatal Windows errors with a trivial script.  You can see a
> screenshot of the problem at
> <http://www-users.rwth-aachen.de/torsten.bronger/idle_error.png>.

At http://www-users.rwth-aachen.de/torsten.bronger/idle_error2.png
you see another error that I get when the soucecode looks slightly
different.  Sometimes it really crashes with a memory access error.
My IDLE has gone mad, hasn't it?

Tsch?,
Torsten.

-- 
Torsten Bronger, aquisgrana, europa vetus


From bdesth.quelquechose at free.quelquepart.fr  Fri May 13 15:40:35 2005
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Fri, 13 May 2005 21:40:35 +0200
Subject: Python Documentation (should be better?)
In-Reply-To: <mailman.411.1115854727.29826.python-list@python.org>
References: <5C99C308457E6D4EA5448EA52A66004A675A6E@or.mxim.com>	<17026.26789.592527.975821@montanaro.dyndns.org>	<mailman.398.1115843305.29826.python-list@python.org>	<428276e8$0$318$626a14ce@news.free.fr>
	<mailman.411.1115854727.29826.python-list@python.org>
Message-ID: <4284fddf$0$6237$636a15ce@news.free.fr>

Ivan Van Laningham a ?crit :
(snip)

> BTW, my "tortured method" is quicker than Bruno's, because to use his
> method I'd have to start the interactive interpreter.
> 
"start the interactive interpreter" ??? What do you mean, "start the 
interactive interpreter" ??? It's *always* started as a part of your 
development environnement, and not more than one keystroke away, isn't 
it ???



From sklass at pointcircle.com  Sat May 21 14:53:34 2005
From: sklass at pointcircle.com (rh0dium)
Date: 21 May 2005 11:53:34 -0700
Subject: Parsing XML - Newbie help
Message-ID: <1116701614.858127.105550@g47g2000cwa.googlegroups.com>

Hi all,

I am relatively new to python and certainly new to XML parsing.  Can
some show me how to get the product text out of this?  Really I want to
know this has 2 processors and the are AMD Opteron(tm) Processor 250

I have gotten this far...

class HWParser:

    def __init__(self):
        if os.path.isfile(LSHW):
            lshw=Exec.Exec(LSHW)
            lshw.execute('-xml')
        else:
            print "lshw does not exist", LSWH
            return "Unknown"

        self.data  = lshw.read()
        self.error = lshw.error()
        self.exit  = lshw.poll()

        if self.error:
            print "Error Exist", self.error
            return
        else:
            self.xml = minidom.parseString(self.data)
            self.xml.normalize()

    def p (self):
        print self.xml.toxml()

If anyone can help me out that would be great!

---

<?xml version="1.0" standalone="yes" ?>
<!-- generated by lshw-B.02.03 -->
<!-- GCC 3.2.3 20030502 (Red Hat Linux 3.2.3-42) -->
    <node id="cpu:0" claimed="true" class="processor"
handle="DMI:0005">
       <description>CPU</description>
       <product>AMD Opteron(tm) Processor 250</product>
       <vendor>Advanced Micro Devices [AMD]</vendor>
       <physid>5</physid>
       <businfo>cpu at 0</businfo>
       <version>15.5.10</version>
       <slot>CPU0</slot>
       <size units="Hz">2400000000</size>
       <capacity units="Hz">3000000000</capacity>
       <width units="bits">64</width>
       <clock units="Hz">1600000000</clock>
       <capabilities>
          <capability id="fpu" >mathematical co-processor</capability>
          <capability id="fpu_exception" >FPU exceptions
reporting</capability>
          <capability id="wp" />
          <capability id="vme" >virtual mode extensions</capability>
          <capability id="de" >debugging extensions</capability>
          <capability id="pse" >page size extensions</capability>
          <capability id="tsc" >time stamp counter</capability>
          <capability id="msr" >model-specific registers</capability>
          <capability id="pae" >4GB+ memory addressing (Physical
Address Extension)</capability>
          <capability id="mce" >machine check exceptions</capability>
          <capability id="cx8" >compare and exchange
8-byte</capability>
          <capability id="apic" >on-chip advanced programmable
interrupt controller (APIC)</capability>
          <capability id="sep" >fast system calls</capability>
          <capability id="mtrr" >memory type range
registers</capability>
          <capability id="pge" >page global enable</capability>
          <capability id="mca" >machine check architecture</capability>
          <capability id="cmov" >conditional move
instruction</capability>
          <capability id="pat" >page attribute table</capability>
          <capability id="pse36" >36-bit page size
extensions</capability>
          <capability id="clflush" />
          <capability id="mmx" >multimedia extensions
(MMX)</capability>
          <capability id="fxsr" >fast floating point
save/restore</capability>
          <capability id="sse" >streaming SIMD extensions
(SSE)</capability>
          <capability id="sse2" >streaming SIMD extensions
(SSE2)</capability>
          <capability id="syscall" >fast system calls</capability>
          <capability id="nx" >no-execute bit (NX)</capability>
          <capability id="mmxext" >multimedia extensions
(MMXExt)</capability>
          <capability id="x86-64" >64bits extensions
(x86-64)</capability>
          <capability id="3dnowext" >multimedia extensions
(3DNow!Ext)</capability>
          <capability id="3dnow" >multimedia extensions
(3DNow!)</capability>
       </capabilities>
    </node>
    <node id="cpu:1" claimed="true" class="processor"
handle="DMI:0006">
       <description>CPU</description>
       <product>AMD Opteron(tm) Processor 250</product>
       <vendor>Advanced Micro Devices [AMD]</vendor>
       <physid>3</physid>
       <businfo>cpu at 1</businfo>
       <version>15.5.10</version>
       <slot>CPU1</slot>
       <size units="Hz">2400000000</size>
       <capacity units="Hz">3000000000</capacity>
       <width units="bits">64</width>
       <clock units="Hz">1600000000</clock>
       <capabilities>
          <capability id="fpu" >mathematical co-processor</capability>
          <capability id="fpu_exception" >FPU exceptions
reporting</capability>
          <capability id="wp" />
          <capability id="vme" >virtual mode extensions</capability>
          <capability id="de" >debugging extensions</capability>
          <capability id="pse" >page size extensions</capability>
          <capability id="tsc" >time stamp counter</capability>
          <capability id="msr" >model-specific registers</capability>
          <capability id="pae" >4GB+ memory addressing (Physical
Address Extension)</capability>
          <capability id="mce" >machine check exceptions</capability>
          <capability id="cx8" >compare and exchange
8-byte</capability>
          <capability id="apic" >on-chip advanced programmable
interrupt controller (APIC)</capability>
          <capability id="sep" >fast system calls</capability>
          <capability id="mtrr" >memory type range
registers</capability>
          <capability id="pge" >page global enable</capability>
          <capability id="mca" >machine check architecture</capability>
          <capability id="cmov" >conditional move
instruction</capability>
          <capability id="pat" >page attribute table</capability>
          <capability id="pse36" >36-bit page size
extensions</capability>
          <capability id="clflush" />
          <capability id="mmx" >multimedia extensions
(MMX)</capability>
          <capability id="fxsr" >fast floating point
save/restore</capability>
          <capability id="sse" >streaming SIMD extensions
(SSE)</capability>
          <capability id="sse2" >streaming SIMD extensions
(SSE2)</capability>
          <capability id="syscall" >fast system calls</capability>
          <capability id="nx" >no-execute bit (NX)</capability>
          <capability id="mmxext" >multimedia extensions
(MMXExt)</capability>
          <capability id="x86-64" >64bits extensions
(x86-64)</capability>
          <capability id="3dnowext" >multimedia extensions
(3DNow!Ext)</capability>
          <capability id="3dnow" >multimedia extensions
(3DNow!)</capability>
       </capabilities>
    </node>



From cgarciaf at lucent.com  Mon May  9 08:32:31 2005
From: cgarciaf at lucent.com (Carlos Garcia)
Date: Mon, 9 May 2005 14:32:31 +0200
Subject: memory leak
Message-ID: <066901c55493$2dc4b900$ba565887@1068801y07c0j>

Hi All,

      I have a memory leak in an application that uses the Python.exec() method multiple times,
i can see in jprobe that instance of classes org.python.pycode._pyx* and
org.python.proxies.* dynamically created during an exec  are not cleaned by the 
garbage collector. 

    Any idea about what can i do? 

Thanks,
Carlos



==========================================================
 Carlos Garc?a                    Phone  : +34 91 714 8796
 Lucent Technologies          e-mail : cgarciaf at lucent.com
 Avenida de Bruselas , 8   -  28108 Alcobendas (Madrid)
==========================================================
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From kay.schluehr at gmx.net  Tue May 31 19:10:35 2005
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: 31 May 2005 16:10:35 -0700
Subject: What's wrong with Zope 3 ?
Message-ID: <1117581035.584193.310060@g47g2000cwa.googlegroups.com>

The last downloadable release is from november 2004. The Windows
installer is configured for Python 2.3(!). The Zope.org main page
announces Zope 2.8 beta 2. Is it stillborn? 

Kay



From claird at lairds.us  Mon May 16 16:08:03 2005
From: claird at lairds.us (Cameron Laird)
Date: Mon, 16 May 2005 20:08:03 GMT
Subject: Faster GUI text control
References: <A_udnVpGA43xjBjfRVn-iQ@comcast.com>
	<pan.2005.05.14.04.20.18.359033@jerf.org>
Message-ID: <tk9nl2-1em.ln1@lairds.us>

In article <pan.2005.05.14.04.20.18.359033 at jerf.org>,
Jeremy Bowers  <jerf at jerf.org> wrote:
>On Fri, 13 May 2005 15:44:24 -0500, none wrote:
>
>>   I'm trying to decide what is the best replacement for the control.  I
>> was originally planning on redoing the GUI with wxpython, but I've seen
>> people indicate I would have the same problem.
>
>Honestly, if this is important to you, the best thing to do is try all the
>ones relevant to your platform; generally creating a window with a text
>widget and loading it with "a whole lotta text", as appropriate to your
>app, is fairly easy; it is not true that once you've tried one GUI toolkit
>you've tried them all, but each one is easier than the last, and
>generally, you can:
>
>* Use the tutorial up to where they place a widget.
>
>* Jump to the reference manual where they describe the text widget and
>insert it instead. 
>
>* Fill the widget with a bunch of text. ("some string\n"*100000 or
>something works well.)
>
>* Start the program and go.
>
>Not counting downloading, an hour each, tops. (The only tricky one that I
>am aware of is that GTK insists that text widgets have to be in a Scrolled
>Window to get a scrollbar on them.)
>
>The problem is that if you're really looking for performance, it may
>differ based on the characteristics of the text and the quality of the
>target computer, the platform (which you don't mention; GTK may scream in
>Linux and make you scream in Windows...), etc., and there may be no one
>person who can give you a firm "This is the best solution for your
>situation" answer.

The known Tkinter symptoms, incidentally, have more to do with
*removing* content from a text than adding them.  Any exercises,
therefore, should not only load data into a text or near-text,
but also remove them.


From steve at REMOVETHIScyber.com.au  Sun May 15 07:59:01 2005
From: steve at REMOVETHIScyber.com.au (Steven D'Aprano)
Date: Sun, 15 May 2005 21:59:01 +1000
Subject: Modifying a built-in function for logging purposes
References: <1116098593.970438.219860@g47g2000cwa.googlegroups.com>
	<Lcthe.1234$Ri4.1175@newsread1.news.pas.earthlink.net>
	<1116108841.429602.257380@o13g2000cwo.googlegroups.com>
Message-ID: <pan.2005.05.15.11.58.59.785984@REMOVETHIScyber.com.au>

On Sat, 14 May 2005 15:14:01 -0700, qwweeeit wrote:

> Hi Greg,
> thank for your replay, but I didn't succeed in any way. You must
> consider however that I'm not a Python "expert"...

Can you post what you did and what results you got? Because Greg's trick
worked for me. See below.

> IMHO, it must be a script that change part of the interpreter, and
> substitute a new module (py) in the place of the standard one (py or
> pyc). The standard module must be saved in order to be able to undo the
> changes and go back to the normal behaviour. The problem is that I don't
> know if the built-in functions like open (or file) are written in Python
> or in C and, besides that, if they can be modified. 

Why do you think it matters if they are written in Python or C or any
other language for that matter? Almost everything in Python is a
first-class object. That means you can rebind functions, methods, classes,
and any other object.

You can't rebind statements like print. But open is just an object:

py> open
<type 'file'>
py> print open("Something.txt", "r").read()
some text in a file
py>
py> save_open = open
>>> save_open
<type 'file'>
py>
py> def open(pathname, mode):
...     print "The pathname is: " + pathname
...     print "The mode is: " + mode
...     return save_open(pathname, mode)
...
py> contents = open("Something.txt", "r").read()
The pathname is: Something.txt
The mode is: r
py> contents
'some text in a file'


> Other solutions
> which modify the source to be logged, are not solutions, because it is
> far simpler to introduce here and there print statements... Bye.

Introducing print statements is good for quick-and-dirty debugging. For
more serious work, you should investigate the debug module.


-- 
Steven





From doodle4 at gmail.com  Tue May 31 14:08:53 2005
From: doodle4 at gmail.com (ashtonn@gmail.com)
Date: 31 May 2005 11:08:53 -0700
Subject: array concatenation
Message-ID: <1117562933.545487.249580@g47g2000cwa.googlegroups.com>

Hello,
I have 2 arrays defined with different typecodes.

a = array('B', '\0', 6)
b = array('L', '\0', 526)

for i in range( 6):
    a[i] = 0xFF

for i in range( 520):
    b[i] = 0xCCCCCCCC

How do i concatenate these two arrays so that, i get
b =
0xff 0xff 0xff 0xff 0xff 0xff 0xCCCCCCCC 0xCCCCCCCC
...................................................
...................................................
0xCCCCCCCC

I need an array because i am using a buffer_info method.

-Ashton



From martin at v.loewis.de  Tue May 17 15:07:13 2005
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Tue, 17 May 2005 21:07:13 +0200
Subject: reference counting and file objects
In-Reply-To: <7xoeb94r3j.fsf@ruckus.brouhaha.com>
References: <slrnd8kf7b.40a.jtr@ofb.net> <7xoeb94r3j.fsf@ruckus.brouhaha.com>
Message-ID: <428a40e1$0$29930$9b622d9e@news.freenet.de>

Paul Rubin wrote:
>>Consider the function above.  Do I need the fp.close(), or will the
>>file be closed automatically when fp goes out of scope and its
>>reference count drops to zero?
> 
> In CPython, fp gets closed when it leaves scope.

One issue is that when the function terminates through an exception,
the file stays open as long as the traceback is available, which
exists until the next exception is raised (and thus replaces this
traceback).

If the function terminates normally (i.e. through return), it is
as you say.

Regards,
Martin


From kretino at net.hr  Tue May 17 04:36:03 2005
From: kretino at net.hr (s)
Date: Tue, 17 May 2005 10:36:03 +0200
Subject: Lex Python
Message-ID: <d6cadn$9oe$1@bagan.srce.hr>

I am using bumblebee software PARSER GENERATOR to make a C file from LEX 
regular definitions.
I want to compile that C file with VS .NET but I have problems.
I am working this for Python regular definitions.
Does somebody know how to configure a project to work? Or maybe somone havde 
done all this and can hel me in that way.I need this help soon as possible.
Thanks




From "none\" at (none)  Sat May 14 15:40:29 2005
From: "none\" at (none) (none)
Date: Sat, 14 May 2005 14:40:29 -0500
Subject: Faster GUI text control
In-Reply-To: <mailman.55.1116046036.29328.python-list@python.org>
References: <A_udnVpGA43xjBjfRVn-iQ@comcast.com>	<pan.2005.05.14.04.20.18.359033@jerf.org>
	<mailman.55.1116046036.29328.python-list@python.org>
Message-ID: <B92dneBEus9zzhvfRVn-gQ@comcast.com>

   That's a good point about the amount of text available at once.  As 
long as I could swap the visible section fast enough that might be a 
good solution.
   This will run mostly on Windows, but I'd like for it to be equally 
usable on Linux.


From mj at zopatista.com  Wed May  4 16:54:03 2005
From: mj at zopatista.com (Martijn Pieters)
Date: Wed, 04 May 2005 22:54:03 +0200
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <877jihc7qv.fsf@uwo.ca>
References: <d4u60o$akh$1@news2.netvision.net.il>	<mailman.47.1114818531.14961.python-list@python.org>	<1114924100.296223.114020@g14g2000cwa.googlegroups.com>	<1114927892.321086.60190@z14g2000cwz.googlegroups.com>	<zX%ce.78213$ft1.5056576@phobos.telenet-ops.be>	<Zj2de.78345$a42.5091422@phobos.telenet-ops.be>
	<8764y29x3m.fsf@uwo.ca> <877jihc7qv.fsf@uwo.ca>
Message-ID: <4279366B.6070800@zopatista.com>

Dan Christensen wrote:
> Any hints for level 13?  I know how to make a call, but don't know "who"
> to call.

I haven't figured this one out yet either. Rather frustrating really.
All the hints I've been given so far is to rmember the solution for
level 12.

Banging-my-head-against-it-didn't-help-either-ly yours,

Martijn Pieters
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From ville at spammers.com  Mon May 16 10:02:11 2005
From: ville at spammers.com (Ville Vainio)
Date: 16 May 2005 17:02:11 +0300
Subject: Ruby blocks finally coming to python? (was Re: python-dev Summary for
	2005-04-16 through 2005-04-30
References: <mailman.13.1116201983.8733.python-list@python.org>
Message-ID: <du7d5rruv4s.fsf@amadeus.cc.tut.fi>

Just wanted to draw the attention by changing the subject line - see
parent and especially:

    Tony> ----------------
    Tony> PEP 340 Proposed
    Tony> ----------------

    Tony> In the end, Guido decided that what he really wanted as a solution to
    Tony> `The Control Flow Management Problem`_ was the simplicity of something
    Tony> like generators that would let him write locking() as something like::

    Tony> def locking(lock):
    Tony> lock.acquire()
    Tony> try:
    Tony> yield
    Tony> finally:
    Tony> lock.release()

    Tony> and invoke it as something like::

    Tony> block locking(lock):
    Tony> CODE

-- 
Ville Vainio   http://tinyurl.com/2prnb


From john at castleamber.com  Thu May 12 02:19:24 2005
From: john at castleamber.com (John Bokma)
Date: 12 May 2005 06:19:24 GMT
Subject: Python Documentation (should be better?)
References: <mailman.398.1115843305.29826.python-list@python.org>
	<428276e8$0$318$626a14ce@news.free.fr>
	<mailman.411.1115854727.29826.python-list@python.org>
	<Xns9653C72F4C83Dcastleamber@130.133.1.4>
	<mailman.424.1115869579.29826.python-list@python.org>
Message-ID: <Xns9654D51D5243castleamber@130.133.1.4>

Ivan Van Laningham wrote:

> Hi All--
> 
> John Bokma wrote:
>> 
>> Ivan Van Laningham wrote:
>> 
>> >  Python docs are not as good as PHP docs.
>> 
>> Oh my. I hope you are just making that up. PHP documentation is
>> guesstimated on how PHP works on average. Add the online comments
>> clutter and you probably are better off reading the source.
>> 
> 
> I didn't write that; I was riffing on Christopher's contention that
> Python's docs ought to be awesome, which I think ought to be true.

Apologies for the misquoting :-) I couldn't even imagine that the statement 
could be true in anyway.  I've read the introduction, and Dive into Python, 
which I highly recommend, and I liked what I read :-).

-- 
John                               MexIT: http://johnbokma.com/mexit/
                           personal page:       http://johnbokma.com/
        Experienced programmer available:     http://castleamber.com/
            Happy Customers: http://castleamber.com/testimonials.html


From exarkun at divmod.com  Fri May 13 08:04:22 2005
From: exarkun at divmod.com (Jp Calderone)
Date: Fri, 13 May 2005 12:04:22 GMT
Subject: wxTimer problem
In-Reply-To: <d61jak$7ig$1@netnews.hinet.net>
Message-ID: <20050513120422.15422.1297260667.divmod.quotient.36467@ohm>

On Fri, 13 May 2005 14:57:26 +0800, Austin <miniaustin at gmail.com> wrote:
>I wrote a GUI program on windows. (python & wxPython)
>One function is to refresh the data from the COM Object continously.
>In the beginning, I used the thread.start_new_thread(xxx,())
>But no matter how i try, it will cause the win32com error.
>
>After that, i use the wx.Timer to do the refresh function.
>It works fine, but i find one problem.
>I think timer should be independant, just like thread, but wxTimer doesn't.
>
>1. Does python have timer function( not included by thread)?
>2. About the wxTimer, does any parameter to let it be independent?
>

  What does "independent" mean?

  Jp


From saravanand at vsnl.net  Mon May  9 04:30:55 2005
From: saravanand at vsnl.net (Saravanan)
Date: 9 May 2005 01:30:55 -0700
Subject: Exception in Python 2.3.3 Interpreter
Message-ID: <1115627455.511797.7590@o13g2000cwo.googlegroups.com>

Hello,


Im running Python Application as a Windows Service (using windows
extensions).  But, sporadically the application crashes (crash in
Python23.dll) and this stops the service.  This problem cann't be
reproduced easily in my system and the call stack generated by the
application is given below. Please note that the call stack generation
is taken from crash dump file.

The crash occured at the following line:
c = strcmp(vname, wname) (object.c)

# ChildEBP RetAddr  Args to Child
00 023ffa58 1e05c6da 055b1250 00637470 00000000
python23!default_3way_compare(struct _object * v = 0x053f2bfc, struct
_object * w = 0x00000001)+0x102
[F:\Python-2.3.3\Python-2.3.3\Objects\object.c @ 689]
01 023ffa74 1e05c5ee 055b1250 00637470 00000000
python23!do_richcmp(struct _object * v = 0x1e0b9fb8, struct _object * w
= 0x00000000, int op = 0)+0x4a
02 023ffa94 1e0174d9 055b1250 00637470 00000000
python23!PyObject_RichCompare(struct _object * v = 0x053f2bfc, struct
_object * w = 0x00000001, int op = 0)+0x1ae
[F:\Python-2.3.3\Python-2.3.3\Objects\object.c @ 1044]
03 023ffaa4 1e013182 00000000 055b1250 00637470
python23!cmp_outcome(int op = 88026108, struct _object * v =
0x00000001, struct _object * w = 0x00000000)+0xa9
[F:\Python-2.3.3\Python-2.3.3\Python\ceval.c @ 3880]
04 023ffb18 1e016ba4 014f3318 00000002 0099f170
python23!eval_frame(struct _frame * f = 0x053f2bfc)+0x542
[F:\Python-2.3.3\Python-2.3.3\Python\ceval.c @ 1965]
05 023ffb30 1e016a69 0099f170 023ffb7c 00000002
python23!fast_function(struct _object * func = <Memory access error>,
struct _object *** pp_stack = <Memory access error>, int n = <Memory
access error>, int na = <Memory access error>, int nk = <Memory access
error>)+0x94 [F:\Python-2.3.3\Python-2.3.3\Python\ceval.c @ 3520]
06 023ffb5c 1e014b65 00a280d0 00000002 00000008
python23!call_function(struct _object *** pp_stack = 0x00000001, int
oparg = 0)+0x159 [F:\Python-2.3.3\Python-2.3.3\Python\ceval.c @ 3458]
07 023ffbcc 1e016ba4 006ea160 00000001 0099f1b0
python23!eval_frame(struct _frame * f = <Memory access error>)+0x1f25
[F:\Python-2.3.3\Python-2.3.3\Python\ceval.c @ 2117]
08 023ffbe4 1e016a69 0099f1b0 023ffc30 00000001
python23!fast_function(struct _object * func = <Memory access error>,
struct _object *** pp_stack = <Memory access error>, int n = <Memory
access error>, int na = <Memory access error>, int nk = <Memory access
error>)+0x94 [F:\Python-2.3.3\Python-2.3.3\Python\ceval.c @ 3520]
09 023ffc10 1e014b65 00a280d0 00000001 00000000
python23!call_function(struct _object *** pp_stack = 0x00000000, int
oparg = 0)+0x159 [F:\Python-2.3.3\Python-2.3.3\Python\ceval.c @ 3458]
0a 023ffc80 1e015b6f 006cf6d0 00000000 00a1df9c
python23!eval_frame(struct _frame * f = <Memory access error>)+0x1f25
[F:\Python-2.3.3\Python-2.3.3\Python\ceval.c @ 2117]
0b 023ffcac 1e040978 0096b720 00000001 006cf6d0
python23!PyEval_EvalCodeEx(struct PyCodeObject * co = <Memory access
error>, struct _object * globals = <Memory access error>, struct
_object * locals = <Memory access error>, struct _object ** args =
<Memory access error>, int argcount = <Memory access error>, struct
_object ** kws = <Memory access error>, int kwcount = <Memory access
error>, struct _object ** defs = <Memory access error>, int defcount =
<Memory access error>, struct _object * closure = <Memory access
error>)+0x70f [F:\Python-2.3.3\Python-2.3.3\Python\ceval.c @ 2663]
0c 023ffcf0 1e0078ec 009788b0 00a1df90 00000000
python23!function_call(struct _object * func = 0x1e0baa50, struct
_object * arg = 0x0096b720, struct _object * kw = 0x00954390)+0x138
[F:\Python-2.3.3\Python-2.3.3\Objects\funcobject.c @ 512]
0d 023ffd04 1e01be03 009788b0 00a1df90 00000000
python23!PyObject_Call(struct _object * func = 0x1e0d7608, struct
_object * arg = 0x00000001, struct _object * kw = 0x00a280d0)+0x1c
[F:\Python-2.3.3\Python-2.3.3\Objects\abstract.c @ 1755]
0e 023fff24 1e0078ec 00a20f08 00671030 00000000
python23!instancemethod_call(struct _object * func = 0x1e0d7608, struct
_object * arg = 0x00000001, struct _object * kw = 0x00a280d0)+0x133
[F:\Python-2.3.3\Python-2.3.3\Objects\classobject.c @ 2433]
0f 023fff38 1e016827 00a20f08 00671030 00000000
python23!PyObject_Call(struct _object * func = 0x77e4a990, struct
_object * arg = 0x01415bd8, struct _object * kw = 0x00000000)+0x1c
[F:\Python-2.3.3\Python-2.3.3\Objects\abstract.c @ 1755]
10 023fff50 1e080c77 00a20f08 00671030 00000000
python23!PyEval_CallObjectWithKeywords(struct _object * func =
0x77e4a990, struct _object * arg = 0x01415bd8, struct _object * kw =
0x00000000)+0xa7 [F:\Python-2.3.3\Python-2.3.3\Python\ceval.c @ 3346]
11 023fff70 1e080675 013d8ba0 00000000 014161a8
python23!t_bootstrap(void * boot_raw = 0x77e4a990)+0x37
[F:\Python-2.3.3\Python-2.3.3\Modules\threadmodule.c @ 183]
12 023fff84 77bc90a2 0086f32c 00000000 00000000
python23!PyThread_get_thread_ident(void)+0x5
[F:\Python-2.3.3\Python-2.3.3\Python\thread_nt.h @ 213]
13 023fffb8 77e4a990 01415bd8 00000000 00000000 msvcrt!_endthread+0xa6
14 023fffec 00000000 77bc9032 01415bd8 00000000
kernel32!BaseThreadStart+0x34

Any clues about the problem ?

- Saravanan D



From andre.roberge at gmail.com  Fri May 20 11:42:41 2005
From: andre.roberge at gmail.com (=?ISO-8859-1?Q?Andr=E9_Roberge?=)
Date: Fri, 20 May 2005 12:42:41 -0300
Subject: ANN: new release of RUR-PLE available
In-Reply-To: <d6kmcp$9dj$1@gemini.csx.cam.ac.uk>
References: <mailman.181.1116468097.8733.python-list@python.org>
	<d6kmcp$9dj$1@gemini.csx.cam.ac.uk>
Message-ID: <d6l0ff$rvs$1@sea.gmane.org>

Michael Hoffman wrote:
> Andr? Roberge wrote:
> 
>>Version 0.8.6a is now available.
> 
> 
> You might see a bit more interest if you briefly explain what RUR-PLE 
> is, and where to find it.
Oops.. sorry about that.

RUR - a Python Learning Environment.
Its purpose is to provide an environment where people with no prior 
experience can learn computer programming (using Python of course!).

RUR-PLE currently requires that both Python and wxPython be installed.
More information can be found at http://rur-ple.sourceforge.net



From steven.bethard at gmail.com  Wed May  4 21:12:24 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Wed, 04 May 2005 19:12:24 -0600
Subject: min max of a list
In-Reply-To: <1115245476.036508.273930@g14g2000cwa.googlegroups.com>
References: <1115245476.036508.273930@g14g2000cwa.googlegroups.com>
Message-ID: <gaCdnf8Pf9xj7-TfRVn-tQ@comcast.com>

querypk at gmail.com wrote:
> If this is the list.
> 
> values = [  0,  72,   0,   4,   9,   2,   0,   0,  42,  26,   0, 282,
> 23,   0, 101, 0,   0,   0,   0,   0]
> 
> as we can see there are peaks in the list.that is 0,72,0 is a
> group(triangle) with peak 72.then 0,   4,   9,   2,   0,   0 with peak
> 9 and 0,  42,  26,   0 with 42 and so on...
> what I want is the left and right bound index of each bin(triangle).The
> list could as big as possible.So some heurestic algorithm which could
> first find max in the list and look for local maxima and minima and
> group its adjcent bounds.Then find next max and group the bins and so
> on.
> 
> so that we can get
> 
> [[0,2],[2,7],[7,10],[10,13]]
> ( indexes of the bounds in the values list). so first group [0,2]
> correspond to 0,72,0 in the values list and so on...
> Hope I am clear.

Not exactly your output, but hopefully you can tailor it to your needs:

py> values = [0, 72, 0, 4, 9, 2, 0, 0, 42, 26, 0, 282, 23, 0, 101, 0, 0, 
0, 0, 0]
py> def isnonzero((index, val)):
...     return val != 0
...
py> import itertools
py> for nonzero, vals in itertools.groupby(enumerate(values), isnonzero):
...     if nonzero:
...         vals = list(vals)
...         start = vals[0][0] - 1
...         end = vals[-1][0] + 1
...         print [start, end], "values: ", values[start:end+1]
...
[0, 2] values:  [0, 72, 0]
[2, 6] values:  [0, 4, 9, 2, 0]
[7, 10] values:  [0, 42, 26, 0]
[10, 13] values:  [0, 282, 23, 0]
[13, 15] values:  [0, 101, 0]

Note that the real work is done by itertools.groupby.  Zero terms are 
grouped together and ignored; non-zero terms are gathered together in lists.

STeVe


From flupke at nonexistingdomain.com  Fri May 20 06:17:26 2005
From: flupke at nonexistingdomain.com (flupke)
Date: Fri, 20 May 2005 10:17:26 GMT
Subject: cddb and mci produce an ImportError
In-Reply-To: <DK0ie.92530$Lm4.5501001@phobos.telenet-ops.be>
References: <DK0ie.92530$Lm4.5501001@phobos.telenet-ops.be>
Message-ID: <WOije.96224$Sr4.5631008@phobos.telenet-ops.be>

flupke wrote:
<snip>

I finally succeeded in making a proper mci.dll that works. I will 
document what i did in the coming days and place it here. I developed 
the dll with DevC++.
Anyway, it all works :)

Benedict


From gmayer at cs.bgu.ac.il  Wed May  4 16:44:18 2005
From: gmayer at cs.bgu.ac.il (Mayer)
Date: 4 May 2005 13:44:18 -0700
Subject: annonymous functions -- how to
Message-ID: <1115239458.776800.240080@g14g2000cwa.googlegroups.com>

Hello:

I would like to define a very large annonymous function, one with
several statements in sequence. I know how to define annonymous
functions, but I don't know how to define a sequence of statements in
their body. Can this be done in Python? If so, how?

Thanks,

Mayer



From usenet at terabytemusic.cjb.net  Wed May 18 08:38:15 2005
From: usenet at terabytemusic.cjb.net (DJTB)
Date: Wed, 18 May 2005 14:38:15 +0200
Subject: processing a Very Large file
References: <118k530sl6kve5c@corp.supernews.com>
	<mailman.110.1116348001.8733.python-list@python.org>
Message-ID: <118mdpo7h6rskb7@corp.supernews.com>

Tim Peters wrote:

> 
>>        tuple_size = int(splitres[0])+1
>>        path_tuple = tuple(splitres[1:tuple_size])
>>        conflicts = Set(map(int,splitres[tuple_size:-1]))
> 
> Do you really mean to throw away the last value on the line?  That is,
> why is the slice here [tuple_size:-1] rather than [tuple_size:]?
> 

Thanks, you saved me from another bug-hunting hell...
(In a previous test version, split returned a '\n' as the last item in the
list...)

> 
> You could manually do something akin to Python's "string interning" to
> store ints uniquely, like:
> 
>     int_table = {}
>     def uniqueint(i):
>         return int_table.setdefault(i, i)
> 
> Then, e.g.,
> 
>>>> uniqueint(100 * 100) is uniqueint(100 * 100)
> True
>>>> uniqueint(int("12345")) is uniqueint(int("12345"))
> True
> 
> Doing Set(map(uniqueint, etc)) would then feed truly shared int
> (and/or long) objects to the Set constructor.
> 

I've implemented this and it does seem to work, thanks.

Stan.


From curi at curi.us  Fri May 27 15:30:31 2005
From: curi at curi.us (Elliot Temple)
Date: Fri, 27 May 2005 12:30:31 -0700
Subject: Get number of lines in file
In-Reply-To: <1117221428.788567.10060@f14g2000cwb.googlegroups.com>
References: <1117221428.788567.10060@f14g2000cwb.googlegroups.com>
Message-ID: <3376ECFF-9CC7-4A2B-8BA3-22C46EB2E892@curi.us>


On May 27, 2005, at 12:17 PM, ssmith579 at aol.com wrote:

> I have read in a file and need to get the number of lines.
>
>     cpn_file = open('Central Part number list.txt')
>     cpn_version = cpn_file.read().split('\n')
>
> I want to know the number of elements in cpn_version.

Could you use:

count_lines = len(cpn_file.readlines())

-- Elliot Temple
http://www.curi.us/


---
[This E-mail scanned for viruses by Declude Virus]



From chase at youknowwho.com  Sun May 29 22:55:10 2005
From: chase at youknowwho.com (Joseph Chase)
Date: Mon, 30 May 2005 02:55:10 GMT
Subject: Monitoring Outgoing Connections?
Message-ID: <igvme.305$li.14@tornado.rdc-kc.rr.com>

Is it possible to write a client within Python that would trigger some sort 
of callback interface when the user is attempting to make an outgoing TCP/IP 
connection?  I'd like to accomplish this on a Windows XP box.

Is this something that could be accomplished with the Twisted framework, or 
am I going to have to dive in the platform specific API?

TIA. 




From steven.bethard at gmail.com  Mon May 16 13:00:53 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Mon, 16 May 2005 11:00:53 -0600
Subject: python-dev Summary for 2005-04-16 through 2005-04-30
In-Reply-To: <1116258692.305537.244260@g49g2000cwa.googlegroups.com>
References: <mailman.13.1116201983.8733.python-list@python.org>
	<1116258692.305537.244260@g49g2000cwa.googlegroups.com>
Message-ID: <I_Sdnfj3isRfTBXfRVn-vQ@comcast.com>

Kay Schluehr wrote:
> but PEP 340 is already withdrawn by the BDFL.
> There won't be any Ruby-like blocks because they hide control flow.

Well, there won't be any blocks that can perform *arbitrary* control 
flow, but it does look like we might have blocks that can perform 
try/finally-like acquisition and release code.  More on this in the next 
summary.

STeVe


From ramen at lackingtalent.com  Fri May  6 13:40:58 2005
From: ramen at lackingtalent.com (Dave Benjamin)
Date: Fri, 06 May 2005 10:40:58 -0700
Subject: annonymous functions -- how to
In-Reply-To: <mailman.105.1115400003.29826.python-list@python.org>
References: <1115239458.776800.240080@g14g2000cwa.googlegroups.com><d5bdip$bpp$05$2@news.t-online.com><42795acb.685370470@news.oz.net><1115264804.625020.203800@f14g2000cwb.googlegroups.com><YuWdnVUxIKrdmuffRVn-oA@powergate.ca>	<TPree.10739$fI.442@fed1read05><mailman.84.1115365568.29826.python-list@python.org>	<2fNee.10965$fI.8507@fed1read05>
	<mailman.105.1115400003.29826.python-list@python.org>
Message-ID: <z0Oee.14624$gc6.13188@okepread04>

Fredrik Lundh wrote:
> Dave Benjamin wrote:
> 
>>>so name them all "func" or "next" or something, so you don't have
>>>to think.  once the object is bound, the name is irrlevant.
>>
>>Sure, you could do this, but then you'd have multiple functions at
>>different nesting levels with the same name, which would be confusing.
> 
> "I don't wanna try that", you mean.

No, I mean, "I have an imagination". But for the sake of argument, here, 
I'll try that:

def add_thingy():
     def func(thingy_id):
         print 'got thingy id:', thingy_id
         def funnc(doodad_id):
             print 'got doodad id:', doodad_id
             def func(thingy_doodad):
                 print 'thingy doodad created, froobling...'
                 frooble(thingy_doodad)
                 print 'froobling complete'
             with_new_thingy_doodad(thingy_id, doodad_id, func)
         with_next_doodad_id(func)
     with_next_thingy_id(func)

This function now has an infinite loop. Can you spot the reason?

> because if you had done so, you would have noticed that "multiple
> functions with the same name" doesn't have to be any more confusing
> than "multiple print statements" or "multiple if statements" (as long as
> you're not using bad names on purpose, of course).

I have noticed. It is more confusing. That's the whole point.

>>>there's also:
>>>
>>>    def add_thingy(self):
>>
>>What object is "self"? Are we defining a method at this point?
> 
> if you have a problem with methods, you shouldn't use Python.

No, I was asking you to clarify, are we rewriting "add_thingy" to be a 
method, and if so, what class is it a method of, and what are its 
responsibilities? Because it seems like this example now shares data 
through an instance, but this data is not required for any other method, 
so it will add clutter to the instance namespace. If anything, it seems 
that "add_thingy" should be moved into another class at this point, in 
which case it follows that every method that needs to do this sort of 
asynchronous communication would likewise be moved to a new class. This 
is fine, I suppose, but it's a lot more verbose.

>>>        yield get_new_thingy_id; thingy_id = self.result
>>
>>What is "get_new_thingy_id"? A function? To whom are we yielding here?
> 
> I could have sworn that you mentioned event-driven programming
> in your original post.  if that's still what you're doing, the answers
> are "a token" and "the event source".

I am just trying to make sense of your example. I am still talking about 
event-programming. Here are the events:

1. Program A sends program B a message, saying, "I need a thingy ID".
2. B sends A a message, "Here's a thingy ID: 42".
3. A sends B a message, "I need a doodad ID".
4. B sends A a message, "Here's a doodad ID: 43".
5. A sends B a message, "Make a thingy doodad with IDs 42 and 43".
6. B sends A a message, "Thingy doodad created".
7. A sends B a message, "Now, frooble the thingy doodad".

I don't know what parts of this transcript you would consider "tokens". 
And I'm also not sure how generators can provide an alternative solution 
to this problem. I am genuinely interested.

Dave


From dave at pythonapocrypha.com  Wed May 18 13:54:31 2005
From: dave at pythonapocrypha.com (Dave Brueck)
Date: Wed, 18 May 2005 11:54:31 -0600
Subject: Is Python suitable for a huge, enterprise size app?
In-Reply-To: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>
Message-ID: <428B8157.9080005@pythonapocrypha.com>

john67 wrote:
> The company I work for is about to embark on developing a commercial
> application that will cost us tens-of-millions to develop.
[snip]
> Right now it looks like Java is the language of choice that the app
> will be developed in. However, I have been looking and reading a lot
> about Python recently and it seems to me that Python could handle it.
> The big attraction to me is the developer productivity.  It seems that
> if Python can handle it, then we could gain a huge savings by using
> Python instead of Java from a productivity standpoint alone.
> 
> So, given the very general requirements in the first paragraph, do you
> think that Python could handle it?

Yes.

Python has good database support, it works well on a wide range of platforms, 
and it's great at tying together different processes, machines, etc. - for 
example, it's fairly easy to get Python to access C code, dynamic libraries, 
system APIs, and external programs. It's easier to test than Java code as well, 
and the overal cost of change is lower.

The concise nature of the language means that what would otherwise be a "huge" 
enterprise app in Java might just be a "large" enterprise app in Python - the 
project will not reach that unwieldy size as quickly, if ever.

The Google archives of this group have this topic covered in various ways many 
times over - IMO Python is great for smallish apps, but its advantage over e.g. 
Java actually *increases* with the size of the app.

If you go the Python route, two of the main obstacles will be:

1) mindshare - getting people on board, getting them to overcome biases one way 
or another, convincing them to really take the time to come up to speed on Python.

2) reducing the complexity of what you think you need to build. I don't know how 
to better describe this, but in Java, for example, I'd have whole bunches custom 
classes to do various tasks but the Python equivalent collapsed into a single 
module. Anyway, I predict that it'll take you some time to convince yourself 
that you simply won't need to build all of the same components as you otherwise 
would, or that they'll often be vastly simpler.

-Dave


From gigi-s at bigfoot.com  Mon May 30 04:52:28 2005
From: gigi-s at bigfoot.com (Gigi)
Date: Mon, 30 May 2005 01:52:28 -0700
Subject: __getattribute__ and __getattr__
In-Reply-To: <d7dpam$jal$1@sea.gmane.org>
References: <d7dgd4$29v$1@sea.gmane.org> <d7dpam$jal$1@sea.gmane.org>
Message-ID: <429AD44C.50506@bigfoot.com>

Terry Reedy wrote:
> "Gigi" <gigi-s at bigfoot.com> wrote in message 
> news:d7dgd4$29v$1 at sea.gmane.org...
> 
>>Hi,
>>In the Python documentation regarding __getattribute__ (more attribute
>>access for new style classes) it is mentioned that if __getattribute__
>>is defined __getattr__ will never be called (unless called explicitely).
>>Here is the exact citation:
> 
> 
> Discrepancy reported in
> 
> https://sourceforge.net/tracker/?func=detail&atid=105470&aid=1204734&group_id=5470
> 
> Guido declared behavior right and doc wrong and in need of correction.
> 
> Terry J. Reedy
> 
> 
> 

Thanks for your reply. It definitely clears the issue. I'm writing an 
article to Dr. Dobbs about the Python object model and I wouldn't want 
to be inaccurate. I fill a little like Leibnitz :-) . It's a curious 
coincidence that two separate people notice the same documentation issue 
that lingere for such a long time in such a short time span.

Thanks, Gigi




From philippe at philippecmartin.com  Mon May 16 14:24:56 2005
From: philippe at philippecmartin.com (Philippe C. Martin)
Date: Mon, 16 May 2005 18:24:56 GMT
Subject: Jesus said, "I am the way,
	the truth and the life: no one can come to the Father(God)(in Heaven),
	but by me." (John 14:6) This means that if you die without trusting in
	Jesus Christ as your Lord and Saviour you will die in your sins
	and be forever sepa
References: <1116096706.696830.275140@g44g2000cwa.googlegroups.com>
	<Etvhe.1353573$8l.349001@pd7tw1no>
	<wemdnVcXpcOIIxvfRVn-tQ@comcast.com>
	<rockon02-1505052236350001@1cust127.tnt6.adl1.da.uu.net>
	<86sm0nd4bn.fsf@guru.mired.org>
Message-ID: <Yz5ie.284$VB6.36@newssvr12.news.prodigy.com>

No need to, just give the guy a glass of water and he'll fix it for you


Mike Meyer wrote:

> rockon02 at senet.com.au (Mike brown) writes:
> 
>> In article <wemdnVcXpcOIIxvfRVn-tQ at comcast.com>, "Bubba" <im at home.com>
>> wrote:
>>
>>> I'm so glad you've decided what everyone believes....
>>> 
>>
>>
>>
>> Some of us don't.
>>
>>
>>
>>
>>
>> Believe that is.
>>
>>
>>
>>
>>
>> In anything in particular.
> 
> 
> Everybody should believe in something.
> 
> 
> 
> 
> 
> 
> I believe I'll have another beer.
> 
> 
>   <mike



From ptaku2_wywalto at tlen.pl  Thu May  5 03:56:12 2005
From: ptaku2_wywalto at tlen.pl (w.p.)
Date: Thu, 05 May 2005 09:56:12 +0200
Subject: [wxPython] own maximize for wxMDIChildFrame - bugs?
Message-ID: <d5cirs$4it$2@213.17.192.132>

I use code below:
1) frame receive too many maximize events on create and on close child window - why?
2) how to catch key events for wxMDIParentFrame ?
3) childWin.SetSize() in OnMaximize send additional maximize event (?)
4) wxMDIChildFrame is initially visible!
5) sorry for english :)
6) wxPython 2.5.4.1 (Windows)

################################################################
import  wx

#----------------------------------------------------------------------

class MyParentFrame(wx.MDIParentFrame):
     def __init__(self):
         wx.MDIParentFrame.__init__(self, None, -1, "MDI Parent", size=(600,400), style=wx.DEFAULT_FRAME_STYLE|wx.FRAME_NO_WINDOW_MENU)
         self.winCount = 0

         self.CreateStatusBar()
         self.MainTb=self.CreateToolBar(wx.TB_HORIZONTAL|wx.NO_BORDER|wx.TB_FLAT)
         biblioBut=wx.Button(self.MainTb,1231,label="&Biblio")
         newWndBut=wx.Button(self.MainTb,1213,label="&NewWnd")
         wx.EVT_BUTTON(self,newWndBut.GetId(), self.OnNewWindow)
         self.MainTb.AddControl(biblioBut)
         self.MainTb.AddSeparator()
         self.MainTb.AddControl(newWndBut)
         self.MainTb.Realize()
         self.SetToolBar(self.MainTb)
         self.Bind(wx.EVT_KEY_DOWN, self.OnKeyDownParent)


     def OnKeyDownParent(self, event):
         print "OnKeyDownParent"

     def OnKeyDownChild(self, event):
         print "OnKeyDownChild"

     def OnClose(self, evt):
         self.GetActiveChild().Close(True)

     def OnMaximize(self, event):
         childWin = event.GetEventObject()
         win = childWin.GetParent()
         print "maximize "+self.GetTitle()
         childWin.SetSize(wx.Size(win.GetClientSize().GetWidth(),win.GetClientSize().GetHeight()-1))
         childWin.SetPosition(wx.Point(0,-1*win.GetClientAreaOrigin().y+1))
         event.Skip()

     def OnNewWindow(self,event):
         self.winCount = self.winCount + 1
         win = wx.MDIChildFrame(self, -1, "Child Window: %d" % self.winCount)
         win.Maximize()
         #win.Show() # !!!!!!!!!!!!!!!!!!

         MainTb=win.CreateToolBar(wx.TB_HORIZONTAL|wx.NO_BORDER|wx.TB_FLAT)
         SBut=wx.Button(MainTb,1213,label="&Func")
         MainTb.AddControl(SBut)
         MainTb.Realize()
         win.SetToolBar(MainTb)

         win.Bind(wx.EVT_MAXIMIZE, self.OnMaximize)
         win.Bind(wx.EVT_KEY_DOWN, self.OnKeyDownChild)
         win.Show(True)

#----------------------------------------------------------------------

if __name__ == '__main__':
     class MyApp(wx.App):
         def OnInit(self):
             wx.InitAllImageHandlers()
             frame = MyParentFrame()
             frame.Show(True)
             self.SetTopWindow(frame)
             return True

     app = MyApp(False)
     app.MainLoop()



From sxanth at ceid.upatras.gr  Fri May 13 11:51:15 2005
From: sxanth at ceid.upatras.gr (Stelios Xanthakis)
Date: Fri, 13 May 2005 18:51:15 +0300
Subject: pyvm -- faster python
In-Reply-To: <d624fq$e93$00$1@news.t-online.com>
References: <mailman.164.1115548611.29826.python-list@python.org>	<1115561483.741761.212140@f14g2000cwb.googlegroups.com>	<m102l2-9qr.ln1@home.rogerbinns.com>	<mailman.264.1115716603.29826.python-list@python.org>	<vu38l2-k5v.ln1@home.rogerbinns.com>	<7xvf5qbir1.fsf@ruckus.brouhaha.com>	<nt98l2-1e.ln1@home.rogerbinns.com>	<7xpsvymlse.fsf@ruckus.brouhaha.com>	<1115791624.856252.247890@z14g2000cwz.googlegroups.com>	<7x1x8el18e.fsf@ruckus.brouhaha.com>	<1115876410.813839.222080@g43g2000cwa.googlegroups.com>	<mailman.441.1115886157.29826.python-list@python.org>	<d61sha$7qe$05$1@news.t-online.com>
	<mailman.13.1115978217.29328.python-list@python.org>
	<d624fq$e93$00$1@news.t-online.com>
Message-ID: <4284CCF3.10308@ceid.upatras.gr>

Armin Steinhoff wrote:

>>> Is there a working version of lwc ???
>>>
>>
>> pyvm is written in lwc-2.0 which is not yet released because
>> nobody's using it.
> 
> 
> As you mentioned it ... lwc-2.0 is used for pyvm. So it is used :)
> 
> Do you have an idea when lwc-2.0 will be releast ?
> 
> Everyone who are interested in pyvm will need it ...
> 

It will be included together with pyvm.  Normally if you want to just
compile pyvm you do not need lwc, it's a preprocessor that generates C
from C++ and the C for pyvm will be pre-generated.  You'd need lwc for
modifying/hacking pyvm.


Stelios



From apardon at forel.vub.ac.be  Tue May  3 09:55:22 2005
From: apardon at forel.vub.ac.be (Antoon Pardon)
Date: 3 May 2005 13:55:22 GMT
Subject: sorting list and then return the index of the sorted item
References: <1115127433.984686.99060@f14g2000cwb.googlegroups.com>
	<slrnd7f0ap.o1c.apardon@rcpc42.vub.ac.be>
Message-ID: <slrnd7f0m8.o1c.apardon@rcpc42.vub.ac.be>

Op 2005-05-03, Antoon Pardon schreef <apardon at forel.vub.ac.be>:
> Op 2005-05-03, custard_pie schreef <ckwiguno at gmail.com>:
>> I need help sorting a list...I just can't figure out how to sort a list
>> and then return a list with the index of the sorted items in the list
>> for example if the list I want to sort is [2,3,1,4,5]
>> I need [2,0,1,3,4] to be returned
>> Can someone help please....
>>
>
> Something like this:
>
>>>> lst = [2,3,1,4,5]
>>>> inx = range(len(lst))
>>>> inx.sort(lambda x,y: lst[x] - lst[y])
>>>> print inx
> [2, 0, 1, 3, 4]
>

Something a bit more usefull in general:


>>> lst = [2,3,1,4,5]
>>> inx = range(len(lst))
>>> inx.sort(lambda x,y: cmp(lst[x],lst[y]))
>>> print inx
[2, 0, 1, 3, 4]

-- 
Antoon Pardon


From lbates at syscononline.com  Fri May 20 20:29:38 2005
From: lbates at syscononline.com (Larry Bates)
Date: Fri, 20 May 2005 19:29:38 -0500
Subject: performance of Nested for loops
In-Reply-To: <1116628510.816306.31390@g43g2000cwa.googlegroups.com>
References: <1116628510.816306.31390@g43g2000cwa.googlegroups.com>
Message-ID: <428E80F2.7060309@syscononline.com>

You can use xrange(N) that way Python doesn't have
to build the 10000 item lists 20000 times.  Other than
that one would need to know why you would call do_job1
and do_job2 10000 times each inside a 10000 iteration
loop.  Most VERY large performance gains are due to
better algorithms not code optimization.

Larry Bates


querypk at gmail.com wrote:
> Is there a better way to code nested for loops as far as performance is
> concerned.
> 
> what better way can we write to improve the speed.
> for example:
> N=10000
> for i in range(N):
>    for j in range(N):
>        do_job1
>    for j in range(N):
>        do_job2
> 


From elrei69 at yahoo.es  Thu May 12 11:48:05 2005
From: elrei69 at yahoo.es (Ximo)
Date: Thu, 12 May 2005 17:48:05 +0200
Subject: How "return" no return ?
References: <3ehaurF34ak0U1@individual.net>
	<mailman.472.1115911936.29826.python-list@python.org>
Message-ID: <3ehc5tF35eo3U1@individual.net>

I am doing a interpret of lines and it show me a prompt, and I want if I 
write a declaration as "int a" my progrtam return de prompt and nothing 
more, for exemple:

>>> 2+2
4
>>> int a
>>>

Then I'm finding that de function which execute "int a" return me nothing, 
and no

>>> int a
None
>>>



"Joseph Garvin" <k04jg02 at kzoo.edu> escribi? en el mensaje 
news:mailman.472.1115911936.29826.python-list at python.org...
> Ximo wrote:
>
>>Hello, I want that the return sentence don't return anything, how can I do
>>it?. If i do only return it returns None, and pass don't run too.
>>
>>Can anyone help me?, thanks.
>>XIMO
>>
>>
>>
>>
> Returning None is the same as returning nothing. What exactly are you
> trying to do? 




From mrmaple at gmail.com  Wed May 18 17:15:21 2005
From: mrmaple at gmail.com (James Carroll)
Date: Wed, 18 May 2005 17:15:21 -0400
Subject: speeding up Python script
In-Reply-To: <118n5l557ften8a@corp.supernews.com>
References: <3evgolF56gtkU3@individual.net>
	<118n5l557ften8a@corp.supernews.com>
Message-ID: <b273c74105051814152c05f9dd@mail.gmail.com>

It looks like your algorithm really does iterate over all values for
six variables and do lots of math.. then you can't do any better than
implementing the inner loop in C.  It does look like you have some
functions that are being called that are also in python, and it would
be interesting to see if just one of those was the culprit.  If so,
you might be able to replace just one of those calls with something
faster.

I'm no expert, but I have used swig once or twice, I might be able to
help.  What do you think?

If you are going through all the data just to find a minimum or
something, then you might be able to get away with not visiting all of
the values of all six variables.  Some sort of gradient descent
minimization is probably already out there written in C ready to be
used.

-Jim


On 5/18/05, Grant Edwards <grante at visi.com> wrote:
> On 2005-05-18, Luis P. Mendes <luis_lupe2XXX at netvisaoXXX.pt> wrote:
> 
> > I have a 1000 line python script that takes many hours to
> > finish.  It is running with six inside 'for' loops.
>


From news at NOwillmcguganSPAM.com  Tue May  3 09:21:36 2005
From: news at NOwillmcguganSPAM.com (Will McGugan)
Date: Tue, 03 May 2005 14:21:36 +0100
Subject: Py2Exe security
In-Reply-To: <1115124297.746843.111770@g14g2000cwa.googlegroups.com>
References: <1115121780.404491.84240@f14g2000cwb.googlegroups.com>
	<mailman.96.1115122800.6583.python-list@python.org>
	<1115124297.746843.111770@g14g2000cwa.googlegroups.com>
Message-ID: <42777ae1$0$2061$db0fefd9@news.zen.co.uk>

Terje Johan Abrahamsen wrote:

>>If your program can access these details, then a suficiently
>>determined attacker can access them too, regardless of what you do.
> 
> 
> Yes, I assume so. Luckily it is not national secrets we are trying to
> hide. But, how does py2exe compare with for example a program written
> in a compiled language like C++? Is it easier to find the info in a
> py2exe .exe than a c++ compiled c++?
> 

Its not the exe file you need to be concerned about, its the pyc files 
that are created with it. I imagine the strings will be in plain text 
form, just like compiled C++.

As others have pointed out, it would be impossible to prevent an 
attacker from discovering information inside the app. The best you can 
do is obfuscate the strings somehow and 'un-obfuscate' them when the app 
runs. That way they at least wont be obvious. Take a look at my 
signature for an example!

Will McGugan
-- 
http://www.willmcgugan.com
"".join( [ {'*':'@','^':'.'}.get(c,None) or chr(97+(ord(c)-84)%26) for c 
in "jvyy*jvyyzpthtna^pbz" ] )


From black.bird at NOSPAMtiscali.it  Tue May  3 02:41:27 2005
From: black.bird at NOSPAMtiscali.it (Michele Ferretti)
Date: Tue, 03 May 2005 06:41:27 GMT
Subject: WordPress Python Library 1.0
In-Reply-To: <1115086696.356342.76870@f14g2000cwb.googlegroups.com>
References: <Rmwde.850131$b5.37722456@news3.tin.it>
	<1115086696.356342.76870@f14g2000cwb.googlegroups.com>
Message-ID: <r2Fde.850837$b5.37765313@news3.tin.it>

Cappy2112 wrote:
> If you wan't explain what WordPress is, can you at least supply a link
> for a page that's in English?
> 

WordPress is most diffused blog engine: http://www.wordpress.org
My library is a client for connect to WP installation.

-- 

Michele Ferretti

ICQ#: 14491159
Skype: m.ferretti79
black DOT bird AT tiscali DOT it
www.blackbirdblog.it


From prabapython at yahoo.co.in  Thu May 12 06:31:59 2005
From: prabapython at yahoo.co.in (praba kar)
Date: Thu, 12 May 2005 11:31:59 +0100 (BST)
Subject: reg mail sending without smtp module
In-Reply-To: 6667
Message-ID: <20050512103159.78166.qmail@web8403.mail.in.yahoo.com>

Dear All,

       From this below answer I got clear
idea for mail sending Module. I am expecting
this kind of answer .   Thank you
for your immediate response.

--- Mike Meyer <mwm at mired.org> wrote:
> praba kar <prabapython at yahoo.co.in> writes:
> > In Php we can build a Mail Message by
> > Mail_mime class and send this message by
> > Mail::Factory's class send Method. Here Php
> > doesn't use any smtp modules. Like that
> > In Python I used email.Message class to
> > build Mail Message and Now I am searching
> > modules to send this message as mail.
> 
> Python isn't PHP. In python, the standard way to
> send a message is
> with the smtp module. If you do an "import this" in
> a python
> interpreter, it will tell you (among other things)
> "There should be
> one-- and preferably only one --obvious way to do
> it." The smtp module
> is that way. Since smtp is also how mail is sent
> around the internet,
> this makes a lot of sense.
> 
> Now, the PHP mail command uses the system's sendmail
> binary (at least
> on Unix). You can do that by hand using the
> subprocess module in 2.4,
> or os.system or os.popen or something similar on
> earlier versions of
> Python. All this really does is asks sendmail to put
> a message in the
> queue from the command line, rather than via the
> smtp port. It's
> probably slower than talking to the already running
> smtp daemon.
> 
> On Windows, the PHP mail command connects to an smtp
> server - which is
> exactly what smtplib does.
> 
>         <mike
> -- 
> Mike Meyer <mwm at mired.org>		
> http://www.mired.org/home/mwm/
> Independent WWW/Perforce/FreeBSD/Unix consultant,
> email for more information.
> -- 
> http://mail.python.org/mailman/listinfo/python-list
> 

________________________________________________________________________
Yahoo! India Matrimony: Find your life partner online
Go to: http://yahoo.shaadi.com/india-matrimony


From a-steinhoff at web.de  Tue May 17 09:43:42 2005
From: a-steinhoff at web.de (Armin Steinhoff)
Date: Tue, 17 May 2005 15:43:42 +0200
Subject: PyXML/expat  and the empty elements
Message-ID: <d6csc0$8an$01$1@news.t-online.com>



Hi all,

is it possible to get the name of an empty element specified
by <element/> ... the expat parser seems only to recognize
the <element></element> form

Regards

   Armin


From steven.bethard at gmail.com  Sat May 14 16:43:52 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Sat, 14 May 2005 14:43:52 -0600
Subject: A new to Python question
In-Reply-To: <1116102355.715816.192840@z14g2000cwz.googlegroups.com>
References: <1116088663.428932.130860@g43g2000cwa.googlegroups.com>
	<rfnhl2-ig5.ln1@Bernd.Nawothnig.dialin.t-online.de>
	<1116093118.599403.35940@g14g2000cwa.googlegroups.com>
	<tsKdnfF2xaKu3BvfRVn-iQ@comcast.com>
	<1116102355.715816.192840@z14g2000cwz.googlegroups.com>
Message-ID: <b_udnUJIuPqb_hvfRVn-hw@comcast.com>

M.E.Farmer wrote:
> I said exactly what I meant, the parentheses around the values creates
> a tuple that you have no reference to! It also has a side effect of
> binding the names inside the tuple to a value and placing them in the
> local namespace( implicit tuple unpacking ). It might be the "same" as
> no parens but it isn't very clear. If you want a tuple make it
> explicit, if you want individual names make it explicit.

It actually is the same, and I don't think implicit or explicit is the 
difference you should be citing here.  The parentheses are fully 
optional -- they don't change the semantics at all:

py> t = (4, 5)
py> a = t
py> a is t
True
py> a = (b, c) = t
py> a is t
True
py> a = b, c = t
py> a is t
True

In all cases, "a" still gets assigned the tuple (4, 5).  Whether or not 
you put the parentheses around "b, c" is fully a matter of style.

I don't know the implementation enough to know whether or not a tuple is 
actually created when "b" and "c" are bound to their values, but I'd be 
willing to bet that whatever happens to "(b, c)" is exactly the same as 
what happens to "b, c".

STeVe


From steven.bethard at gmail.com  Wed May 11 16:52:06 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Wed, 11 May 2005 14:52:06 -0600
Subject: Python Documentation (should be better?)
In-Reply-To: <mailman.398.1115843305.29826.python-list@python.org>
References: <5C99C308457E6D4EA5448EA52A66004A675A6E@or.mxim.com>	<17026.26789.592527.975821@montanaro.dyndns.org>
	<mailman.398.1115843305.29826.python-list@python.org>
Message-ID: <eL2dnQqPycfr7R_fRVn-1w@comcast.com>

Ivan Van Laningham wrote:
> The Python docs are not ideal.  I can never remember, for instance,
> where to find string methods (not methods in the string module, but
> methods with '')

Hmmm... Well going to http://docs.python.org/ and typing "string 
methods" into the search box gives, as the first hit:

http://docs.python.org/lib/string-methods.html

Even if you just search for "string", that URL is the second hit, and 
pretty clearly the right one from the title.

STeVe


From zlatozar at gmail.com  Mon May 16 03:23:41 2005
From: zlatozar at gmail.com (zlatozar)
Date: 16 May 2005 00:23:41 -0700
Subject: Have you tried eric3 ?
In-Reply-To: <mailman.18.1116209696.8733.python-list@python.org>
References: <200505141008.00398.nicolas.girard@nerim.net>
	<d64qc4$2cn$1@sea.gmane.org>
	<mailman.18.1116209696.8733.python-list@python.org>
Message-ID: <1116228221.501549.306280@z14g2000cwz.googlegroups.com>

If you haven't tried PyDev(Eclipse plug-in) I'd encourage you to take a
look. Here is URL:
http://pydev.sourceforge.net/



From lbates at syscononline.com  Mon May 16 16:09:20 2005
From: lbates at syscononline.com (Larry Bates)
Date: Mon, 16 May 2005 15:09:20 -0500
Subject: Problem listing services with wmi
In-Reply-To: <mailman.59.1116271963.8733.python-list@python.org>
References: <mailman.59.1116271963.8733.python-list@python.org>
Message-ID: <4288FDF0.7040007@syscononline.com>

Might not be the problem but try without the leading
spaces before your method calls.

for s in c.Win32_Service ():

should be

for s in c.Win32_Service():

-Larry


Jean-S?bastien Guay wrote:
> Hello,
> 
> I'm pretty new to Python, though I have a fair bit of experience with
> C/C++, Java, Perl, PHP and others.
> 
> I installed Tim Golden's wmi module
> (http://tgolden.sc.sabren.com/python/wmi.html), in the hopes it would
> help me list and work with services on my Win32 machine. Now, everything
> seems fine except for one thing : Listing services!
> 
> I tried running a couple of the examples on Tim's more examples page in
> the python shell (for example, List all running processes, Show the
> percentage free space for each fixed disk, Show the IP and MAC addresses
> for IP-enabled network interfaces, etc.) and they worked fine. But when
> I try to run the first example which is on the first page above, I get
> an error. The code is :
> 
> import wmi
> 
> for s in c.Win32_Service ():
>  if s.State == 'Stopped':
>    print s.Caption, s.State
> 
> 
> and I get :
> 
> Traceback (most recent call last):
>  File "<stdin>", line 1, in ?
>  File "G:\Python-2.4\Lib\site-packages\wmi.py", line 404, in __call__
>    return self.wmi.query (wql)
>  File "G:\Python-2.4\Lib\site-packages\wmi.py", line 583, in query
>    raise WMI_EXCEPTIONS.get (hresult, x_wmi (hresult))
> wmi.x_wmi: -2147217398
> 
> (the exception seems to be thrown on the "for s in..." line)
> I have only found one discussion in this newsgroup's archives that seems
> to talk about this problem
> (http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/19fa91ea1a1ff160/0364b7cd22d73483?q=WMI_EXCEPTIONS&rnum=1#0364b7cd22d73483)
> and the fix they suggest there (calling pythoncom.CoInitialize () before
> instantiating the WMI object) doesn't seem to work in this case. In
> other words, this code :
> 
> import wmi
> import pythoncom
> 
> pythoncom.CoInitialize ()
> c = wmi.WMI ()
> for s in c.Win32_Service ():
>  if s.State == 'Stopped':
>    print s.Caption, s.State
> 
> gives me the same result as above.
> 
> Could someone please point me in the right direction to find out what's
> wrong?
> 
> Thanks in advance,
> 
> J-S
> 



From bokr at oz.net  Fri May 13 19:55:36 2005
From: bokr at oz.net (Bengt Richter)
Date: Fri, 13 May 2005 23:55:36 GMT
Subject: How to find the classname of an object? (was Python Documentation)
References: <mailman.503.1115940149.29826.python-list@python.org>
	<hGRge.14335$941.9700@trnddc08> <4283fda8.18221170@news.oz.net>
	<d62dg3$tpe$1@sea.gmane.org>
	<mailman.32.1115997422.29328.python-list@python.org>
	<1116002227.923231.309150@f14g2000cwb.googlegroups.com>
	<4284f28c.80913136@news.oz.net>
	<1116021553.771015.320200@g14g2000cwa.googlegroups.com>
Message-ID: <42853387.97548507@news.oz.net>

On 13 May 2005 14:59:13 -0700, "Matt" <matthew_shomphe at countrywide.com> wrote:
>
>Bengt Richter wrote:
[...]
>> I'm afraid inheriting explicitly from object will make the exception
>unraisable.
>> Exceptions are still based on "classic" classes for some reason that
>> I don't know enough about to explain.
>>
>> So if you were hoping to use .mro() with old-style classes to see the
>> old-style inheritance chain, as opposed to new-style inheritance that
>> underlies access to special entities involved in the implementation
>of the old, sorry ;-/
>>
>> At least that's the way it looks to me, without digging in that part
>of the code.
>>
>> Regards,
>> Bengt Richter
>
>D'oh!  So I tested the .mro() functionality but not the
>Exception-raisableness (?).
>
>It seems unintuitive to me as to why inheriting from  "object" would
>prevent something that also inherited from "Exception" from being
>raised.  Does anyone have insight into why this happens?
>
I googled for some discussion and found something straight from the BDFL:

    http://mail.python.org/pipermail/python-dev/2005-January/051098.html

with a lot of interesting followup. Don't know what the status of the
patch is now.

Regards,
Bengt Richter


From Scott.Daniels at Acm.Org  Tue May  3 15:41:00 2005
From: Scott.Daniels at Acm.Org (Scott David Daniels)
Date: Tue, 03 May 2005 12:41:00 -0700
Subject: sorting list and then return the index of the sorted item
In-Reply-To: <Xns964B971C7AF2Bduncanbooth@127.0.0.1>
References: <1115127433.984686.99060@f14g2000cwb.googlegroups.com>
	<Xns964B971C7AF2Bduncanbooth@127.0.0.1>
Message-ID: <4277cdc8$1@nntp0.pdx.net>

Duncan Booth wrote:
> custard_pie wrote:
> 
>>I need help sorting a list...I just can't figure out how to sort a list
>>and then return a list with the index of the sorted items in the list
>>for example if the list I want to sort is [2,3,1,4,5]
>>I need [2,0,1,3,4] to be returned
> 
> ...
>>>>v = [2, 3, 1, 4, 5]
>>>>import operator
>>>>[ i for (i,j) in sorted(enumerate(v), key=operator.itemgetter(1))]
> 
> [2, 0, 1, 3, 4]
> 

Or, to get fancy with Python 2.4:

     result = sorted(range(len(v)), key=v.__getitem__)

Make a list of indices, and says the sort key is "over there" to sorted.

--Scott David Daniels
Scott.Daniels at Acm.Org


From tgm2tothe10thpower at replacetextwithnumber.hotmail.com  Wed May 25 09:47:07 2005
From: tgm2tothe10thpower at replacetextwithnumber.hotmail.com (Thomas G. Marshall)
Date: Wed, 25 May 2005 13:47:07 GMT
Subject: What are OOP's Jargons and Complexities?
References: <1116843761.619249.144790@g47g2000cwa.googlegroups.com>
	<1117003340.900449.124180@o13g2000cwo.googlegroups.com>
Message-ID: <vl%ke.374$Li3.9@trndny05>

Xah Lee coughed up:
> The Rise of "Static" versus "Instance" variables


You are clearly unable to form a proper argument, *AND* you have irritated 
nearly everyone frequently.

<PLONK>

Ah....the blessed silence.... 




From http  Wed May 11 22:53:29 2005
From: http (Paul Rubin)
Date: 11 May 2005 19:53:29 -0700
Subject: Python Documentation (should be better?)
References: <mailman.389.1115837608.29826.python-list@python.org>
	<1115839271.271071.32710@z14g2000cwz.googlegroups.com>
	<mailman.393.1115840571.29826.python-list@python.org>
	<1115841659.470657.33320@o13g2000cwo.googlegroups.com>
Message-ID: <7xk6m5b1ee.fsf@ruckus.brouhaha.com>

"S?bastien Boisg?rault" <Sebastien.Boisgerault at gmail.com> writes:
> "Manual" == scope of the *Lib Reference* + informal style of the
> *Tutorial*,

I don't care whether the style is formal or informal, the manual
should document the complete interface of the language and library and
right now it doesn't do anything like that.


From raghulj at gmail.com  Thu May 26 10:00:21 2005
From: raghulj at gmail.com (Raghul)
Date: 26 May 2005 07:00:21 -0700
Subject: converting jpg to pdf
Message-ID: <1117116021.652260.66260@g14g2000cwa.googlegroups.com>

Hi friends
            Is it possible to convert jpg to pdf  in python. I need a
program to convert jpg format file to pdf. Is there any sample or any
library to do that? Pls guide me.

Thanks in advance



From mwh at python.net  Thu May 19 13:05:16 2005
From: mwh at python.net (Michael Hudson)
Date: Thu, 19 May 2005 17:05:16 GMT
Subject: What's the use of changing func_name?
References: <311b5ce105051822477c09c81@mail.gmail.com>
	<d6ha7v$kh9$1@sea.gmane.org>
	<311b5ce1050518231650b3b53e@mail.gmail.com>
	<mailman.192.1116485576.8733.python-list@python.org>
Message-ID: <m3d5rnxhvg.fsf@pc150.maths.bris.ac.uk>

Robert Kern <rkern at ucsd.edu> writes:

> could ildg wrote:
> > Thank you for your help.
> > I know the function g is changed after setting the func_name.
> > But I still can't call funciton g by using f(), when I try to do
> > this, error will occur:
> > <code>
> > 
> >>>>g.func_name="f"
> >>>>print g
> > <function f at 0x00B2CEB0>
> > 
> >>>>f()
> > Traceback (most recent call last):
> >   File "<stdin>", line 1, in ?
> > NameError: name 'f' is not defined
> > </code>
> > Since the name of g is changed into f, why can't I call it by using f()?
> > Should I call it using f through other ways? Please tell me. Thanks~
> 
> Others have answered this particular question, but you're probably
> still wondering what is the use of changing .func_name if it doesn't
> also change the name by which you call it. The answer is that there
> are tools that use the .func_name attribute for various purposes. For
> example, a documentation generating tool might look at the .func_name
> attribute to make the proper documentation. Actually, that's probably
> *the* biggest use case because I can't think of any more significant
> ones.

Error messages!

Cheers,
mwh

-- 
  There are two kinds of large software systems: those that evolved
  from small systems and those that don't work.
                           -- Seen on slashdot.org, then quoted by amk


From davidb at mcs.st-and.ac.uk  Tue May 31 08:26:00 2005
From: davidb at mcs.st-and.ac.uk (davidb at mcs.st-and.ac.uk)
Date: 31 May 2005 05:26:00 -0700
Subject: scripting browsers from Python
In-Reply-To: <1117525953.255166.234420@g14g2000cwa.googlegroups.com>
References: <1117525953.255166.234420@g14g2000cwa.googlegroups.com>
Message-ID: <1117542360.436302.207150@o13g2000cwo.googlegroups.com>

Michele Simionato wrote:

> I would like to know what is available for scripting browsers from
> Python.
> For instance, webbrowser.open let me to perform GET requests, but I
> would like to do POST requests too. I don't want to use urllib to
> emulate a browser, I am interested in checking that browser X really
> works as intended with my application. Any suggestion?

For Konqueror running on KDE, you can use DCOP to control the browser.
There are a couple of different, but related, Python modules that you
can use to do this. See the following page for more information:

    http://developer.kde.org/language-bindings/python/

I believe this approach has been used quite successfully with other
KDE applications:

    http://www.kde-apps.org/content/show.php?content=18638

You should still be able to automate the browser with just popen2 and
the "dcop" command line tool if you are really desperate. I once had
to resort to this ad-hoc approach in the distant past but, these days,
I'd recommend one of the above modules instead.

David



From grante at visi.com  Tue May  3 10:46:12 2005
From: grante at visi.com (Grant Edwards)
Date: Tue, 03 May 2005 14:46:12 -0000
Subject: Py2Exe security
References: <1115121780.404491.84240@f14g2000cwb.googlegroups.com>
	<1115129613.564775.21660@g14g2000cwa.googlegroups.com>
Message-ID: <117f3lk633rbs87@corp.supernews.com>

On 2005-05-03, mahasamatman <vladimir.n.ivanov at gmail.com> wrote:

> I suggest You to use base 64 encoded strings
> something like
> password = 'aGlkZGVuX3Bhc3N3b3Jk\n'
> password = pasword.decode("base64")

That will delay the attacker for a few minutes.

-- 
Grant Edwards                   grante             Yow!  Do you like "TENDER
                                  at               VITTLES"?
                               visi.com            


From gmayer at cs.bgu.ac.il  Wed May 18 20:17:50 2005
From: gmayer at cs.bgu.ac.il (Mayer)
Date: 18 May 2005 17:17:50 -0700
Subject: help with generators
Message-ID: <1116461870.130411.9280@g43g2000cwa.googlegroups.com>

Hello:

I need some help in understanding generators. I get them to work in
simple cases, but the following example puzzles me. Consider the
non-generator, "ordinary" procedure:

def foo(n):
    s = []
    def foo(n):
        if n == 0:
            print s
        else:
            s.append(0)
            foo(n - 1)
            s.pop()
            s.append(1)
            foo(n - 1)
            s.pop()
    foo(n)

foo(n) prints all n-bit-wide binary numbers as a list. I would now like
to create a generator for such numbers:

def bin(n):
    s = []
    def bin(n):
        if n == 0:
            yield s
        else:
            s.append(0)
            bin(n - 1)
            s.pop()
            s.append(1)
            bin(n - 1)
            s.pop()
    return bin(n)

yet this doesn't work as expected. Can someone please explain why?

Thanks,

Mayer Goldberg



From simon.dahlbacka at gmail.com  Tue May 17 08:51:01 2005
From: simon.dahlbacka at gmail.com (simon.dahlbacka at gmail.com)
Date: 17 May 2005 05:51:01 -0700
Subject: logging problems
In-Reply-To: <mailman.34.1114796788.14961.python-list@python.org>
References: <loom.20050428T142438-258@post.gmane.org>
	<mailman.34.1114796788.14961.python-list@python.org>
Message-ID: <1116334261.953335.307340@g14g2000cwa.googlegroups.com>

I tried moving the import traceback to the start of  the file
(logging/__init__.py) but that did not seem to have any effect?
I suppose the fix was in version 1.26 in cvs?



From bokr at oz.net  Mon May 16 13:28:31 2005
From: bokr at oz.net (Bengt Richter)
Date: Mon, 16 May 2005 17:28:31 GMT
Subject: question about the id()
References: <428809fc.62d7a08a.1cfe.ffffd7ef@mx.gmail.com>
	<mailman.23.1116212733.8733.python-list@python.org>
	<873bsnxhe0.fsf@hector.domek>
Message-ID: <4288d546.86043504@news.oz.net>

On Mon, 16 May 2005 18:30:47 +0200, Peter Dembinski <pdemb at gazeta.pl> wrote:

>Skip Montanaro <skip at pobox.com> writes:
>
>>     kyo> Can someone explain why the id() return the same value, and
>>     kyo> why these values are changing?
>>
>> Instance methods are created on-the-fly.  
>
>So, the interpreter creates new 'point in address space' every time
>there is object-dot-method invocation in program?

Yes, but you can save the result of the obj.method expression (that's what it is,
an expression). E.g.,

     bound_method = obj.method

after that, you can write

     bound_method()

or
     obj.method()

(of course, you can pass arguments too, depending on the signature,
remembering that the "self" instance parameter is already bound in
and does not need to be passed again to a bound method)

The obj.method() call will re-evaluate the obj.method expression,
and the bound_method() call will just call the previously created
bound method.

BTW, a typical performance optimization (not done automatically by python)
is to hoist unchanging-value expressions out of loops, and obj.method is
often such an expression, so you will this strategy when people try
to squeeze extra performance from their programs.

Regards,
Bengt Richter


From peter at engcorp.com  Tue May 10 08:17:34 2005
From: peter at engcorp.com (Peter Hansen)
Date: Tue, 10 May 2005 08:17:34 -0400
Subject: sync dir's
In-Reply-To: <mailman.274.1115722312.29826.python-list@python.org>
References: <428043D7.8030203@open-networks.net>	<d5plm4$fq$1@sea.gmane.org>	<428060FA.8070207@open-networks.net>	<20050510091012.GA16575@mylene.ghaering.de>
	<mailman.274.1115722312.29826.python-list@python.org>
Message-ID: <V5ednW81OaMYOx3fRVn-ow@powergate.ca>

Timothy Smith wrote:
> Gerhard Haering wrote:
>> http://osx.freshmeat.net/projects/pysync/
>>
> pysync hasn't been worked on in years by the looks of it. no new 
> releases since 03. and the last release was for 2.1, so i'm dubious 
> about it working at all? the windows installer doesn't work either.

You can (apparently) contact the maintainer ("ABO") for windows binaries 
if you need them.  He is also on the librsync project, which has as its 
latest news "0.9.6 released", and the release in 2003 of pysync was 
intended to update it to use librsync 0.9.6.  That suggests to me this 
is more a case of "things work" than a case of "dead project".

In any case, pysync itself doesn't even have code to walk the directory 
tree or send data, just the delta/patch code, so unless you plan to 
build the other parts for yourself it may not be what you need.  (On the 
other hand, if you need just the delta/patch code, it sounds like it 
should work fine.)  I haven't tried it myself (yet).

-Peter


From dreamingpython at 163.com  Wed May 25 00:44:15 2005
From: dreamingpython at 163.com (ÒÊÃÉɽÈË)
Date: Wed, 25 May 2005 12:44:15 +0800
Subject: Has ComboBox ctrl in Tkinter?
Message-ID: <d70vik$snj$1@sea.gmane.org>

i have not find the ComboBox in Tkinter,has it? where to get the doc about
how to use combobox ctrl?





From bokr at oz.net  Sat May 14 18:04:02 2005
From: bokr at oz.net (Bengt Richter)
Date: Sat, 14 May 2005 22:04:02 GMT
Subject: A new to Python question
References: <1116088663.428932.130860@g43g2000cwa.googlegroups.com>
	<rfnhl2-ig5.ln1@Bernd.Nawothnig.dialin.t-online.de>
	<1116093118.599403.35940@g14g2000cwa.googlegroups.com>
	<tsKdnfF2xaKu3BvfRVn-iQ@comcast.com>
	<1116102355.715816.192840@z14g2000cwz.googlegroups.com>
Message-ID: <42866cb8.177725696@news.oz.net>

On 14 May 2005 13:25:55 -0700, "M.E.Farmer" <mefjr75 at hotmail.com> wrote:

>I said exactly what I meant, the parentheses around the values creates
>a tuple that you have no reference to! It also has a side effect of
I don't understand what you are saying, or meaning ;-)
BTW, the function call has nothing to do with what happens on the left hand side
of the assignment. It is only the result of the function call that counts, so we
could as well use a literal or other expression. This is a matter of unpacking
a sequence according to the left hand target. E.g.,

 >>> iter([1,2,3])
 <listiterator object at 0x02F8F68C>
 >>> a,b,c = iter([1,2,3])
 >>> d,e,f = [1,2,3]
 >>> g,h,i = 'GHI'
 >>> [a,b,c,d,e,f,g,h,i]
 [1, 2, 3, 1, 2, 3, 'G', 'H', 'I']

Ok, now looking at the code for the assignment to a,b,c vs to (a,b,c):

 >>> import dis
 >>> dis.dis(compile('(a,b,c) = iter([1,2,3])','','exec'))
   1           0 LOAD_NAME                0 (iter)
               3 LOAD_CONST               0 (1)
               6 LOAD_CONST               1 (2)
               9 LOAD_CONST               2 (3)
              12 BUILD_LIST               3
              15 CALL_FUNCTION            1
              18 UNPACK_SEQUENCE          3
              21 STORE_NAME               1 (a)
              24 STORE_NAME               2 (b)
              27 STORE_NAME               3 (c)
              30 LOAD_CONST               3 (None)
              33 RETURN_VALUE
 >>> dis.dis(compile('a,b,c = iter([1,2,3])','','exec'))
   1           0 LOAD_NAME                0 (iter)
               3 LOAD_CONST               0 (1)
               6 LOAD_CONST               1 (2)
               9 LOAD_CONST               2 (3)
              12 BUILD_LIST               3
              15 CALL_FUNCTION            1
              18 UNPACK_SEQUENCE          3
              21 STORE_NAME               1 (a)
              24 STORE_NAME               2 (b)
              27 STORE_NAME               3 (c)
              30 LOAD_CONST               3 (None)
              33 RETURN_VALUE
 
I don't see anything in the code about creating a tuple that you have no reference to.
To see the unpacking of "GHI" so as to get rid of the function call red herring:

 >>> dis.dis(compile('a,b,c = "GHI"','','exec'))
   1           0 LOAD_CONST               0 ('GHI')
               3 UNPACK_SEQUENCE          3
               6 STORE_NAME               0 (a)
               9 STORE_NAME               1 (b)
              12 STORE_NAME               2 (c)
              15 LOAD_CONST               1 (None)
              18 RETURN_VALUE
 >>> dis.dis(compile('(a,b,c) = "GHI"','','exec'))
   1           0 LOAD_CONST               0 ('GHI')
               3 UNPACK_SEQUENCE          3
               6 STORE_NAME               0 (a)
               9 STORE_NAME               1 (b)
              12 STORE_NAME               2 (c)
              15 LOAD_CONST               1 (None)
              18 RETURN_VALUE

ISTM the assignment part starts with UNPACK_SEQUENCE and all the code looks the same.
BTW, UIAM it is the commas that define tuples, so the outermost parens are really expression
parens more than tuple syntax. But note that you can have nested tuple structure as target,
and that does change the unpacking code (and what it expects to have available to unpack):

 >>> (x,(y,z)) = 'XYZ'
 Traceback (most recent call last):
   File "<stdin>", line 1, in ?
 ValueError: too many values to unpack
 >>> (x,(y,z)) = 'X','YZ'
 >>> x
 'X'
 >>> y
 'Y'
 >>> z
 'Z'
 >>> (x,(y,z)) = [1, [2,3]]
 >>> x
 1
 >>> y
 2
 >>> z
 3
 >>> dis.dis(compile('(x,(y,z)) = 0','','exec'))
   1           0 LOAD_CONST               0 (0)
               3 UNPACK_SEQUENCE          2
               6 STORE_NAME               0 (x)
               9 UNPACK_SEQUENCE          2
              12 STORE_NAME               1 (y)
              15 STORE_NAME               2 (z)
              18 LOAD_CONST               1 (None)
              21 RETURN_VALUE

Obviously we can't unpack the zero, but the code doesn't know
that until it tries it, so we can look at what the left hand side code is
independent of the right hand side.


>binding the names inside the tuple to a value and placing them in the
>local namespace( implicit tuple unpacking ). It might be the "same" as
>no parens but it isn't very clear. If you want a tuple make it
>explicit, if you want individual names make it explicit.
OTOH, you might want a mix:

 >>> a, tup, (b,c), d = ['A', ('a', 'tuple'), 'BC', 'Sandra']
 >>> a
 'A'
 >>> tup
 ('a', 'tuple')
 >>> b
 'B'
 >>> c
 'C'
 >>> d
 'Sandra'

Or with gratuitous _outer_ parens:

 >>> (a, tup, (b,c), d) = ['A', ('a', 'tuple'), 'BC', 'Sandra']
 >>> a
 'A'
 >>> tup
 ('a', 'tuple')
 >>> b
 'B'
 >>> c
 'C'
 >>> d
 'Sandra'

 >>> dis.dis(compile("a, tup, (b,c), d = ['A', ('a', 'tuple'), 'BC', 'Sandra']",'','exec'))
   1           0 LOAD_CONST               0 ('A')
               3 LOAD_CONST               6 (('a', 'tuple'))
               6 LOAD_CONST               3 ('BC')
               9 LOAD_CONST               4 ('Sandra')
              12 BUILD_LIST               4
              15 UNPACK_SEQUENCE          4
              18 STORE_NAME               0 (a)
              21 STORE_NAME               1 (tup)
              24 UNPACK_SEQUENCE          2
              27 STORE_NAME               2 (b)
              30 STORE_NAME               3 (c)
              33 STORE_NAME               4 (d)
              36 LOAD_CONST               5 (None)
              39 RETURN_VALUE

Regards,
Bengt Richter


From flupke at nonexistingdomain.com  Thu May 26 19:00:19 2005
From: flupke at nonexistingdomain.com (flupke)
Date: Thu, 26 May 2005 23:00:19 GMT
Subject: using timeit for a function in a class
In-Reply-To: <429635b9$1_3@newspeer2.tds.net>
References: <ZFjle.101596$KL7.6197297@phobos.telenet-ops.be>
	<429635b9$1_3@newspeer2.tds.net>
Message-ID: <7ysle.102305$D24.5938321@phobos.telenet-ops.be>

Kent Johnson wrote:
> flupke wrote:
> 
>>
>> Hi,
>>
>> i tried to use timeit on a function in a class but it doesn't do what 
>> i think it should do ie. time :)
>> In stead it starts printing line after line of hello time test!
>> What am i doing wrong in order to time the f function?
> 
> 
> Hmm, by default Timer.timeit() calls the function being timed 1000000 
> times. That's a lot of "hello time test" =:-)
> 
> Kent

Hehe, thanks Kent.
Need to drink more coffee and train the eyes more, a new goal in life :)

print t.timeit(1) did the trick.

Regards,
Benedict


From devrick88 at gmail.com  Thu May  5 11:19:31 2005
From: devrick88 at gmail.com (rickle)
Date: 5 May 2005 08:19:31 -0700
Subject: dictionary comparison
Message-ID: <1115306371.818120.150340@f14g2000cwb.googlegroups.com>

I'm trying to compare sun patch levels on a server to those of what sun
is recommending.  For those that aren't familiar with sun patch
numbering here is a quick run down.

A patch number shows up like this:
113680-03
^^^^^^ ^^
patch#  revision

What I want to do is make a list.  I want to show what server x has
versus what sun recommends, and if the patch exists, but the revision
is different, I want to show that difference.

Here are some sample patches that sun recommends:
117000-05
116272-03
116276-01
116278-01
116378-02
116455-01
116602-01
116606-01

Here are some sample patches that server x has:
117000-01
116272-02
116272-01
116602-02

So there are some that are the same, some that sun recommends that
server x doesn't have, and some where the patch is the same but the
revision is different.

I've thrown the data into dictionaries, but I just can't seem to figure
out how I should actually compare the data and present it.  Here's what
I have so far (the split is in place because there is actually a lot
more data in the file, so I split it out so I just get the patch number
and revision).  So I end up with (for example) 116272-01, then split so
field[0] is 116272 and field[1] is 01.

def sun():
        sun = open('sun-patchlist', 'r')
        for s in sun:
                sun_fields = s.split(None, 7)
                for sun_field in sun_fields:
                        sun_field = sun_field.strip()
                sun_patch = {}
                sun_patch['number'] = sun_fields[0]
                sun_patch['rev'] = sun_fields[1]
                print sun_patch['number'], sun_patch['rev']
        sun.close()

def serverx():
        serverx = open('serverx-patchlist', 'r')
        for p in serverx:
                serverx_fields = p.split(None, 7)
                for serverx_field in serverx_fields:
                        serverx_field = serverx_field.strip()
                serverx_patch = {}
                serverx_patch['number'] = serverx_fields[0]
                serverx_patch['rev'] = serverx_fields[1]
                print serverx_patch['number'], serverx_patch['rev']
        serverx.close()

if __name__=='__main__':
        sun()
        serverx()


Right now I'm just printing the data, just to be sure that each
dictionary contains the correct data, which it does.  But now I need
the comparison and I just can't seem to figure it out.  I could
probably write this in perl or a shell script, but I'm trying really
hard to force myself to learn Python so I want this to be a python
script, created with only built-in modules.

Any help would be greatly appreciated,
Rick



From steven.bethard at gmail.com  Mon May 30 12:23:45 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Mon, 30 May 2005 10:23:45 -0600
Subject: how to convert string to list or tuple
In-Reply-To: <Xns96666DCDF2C19duncanbooth@127.0.0.1>
References: <d74dbl$h91$1@news.yaako.com>
	<mailman.131.1117109560.18027.python-list@python.org>
	<1117383768.099922.308760@o13g2000cwo.googlegroups.com>
	<Xns9665B54CBAA38duncanbooth@127.0.0.1>
	<KpKdnfZemtzivwffRVn-sA@comcast.com>
	<Xns96666DCDF2C19duncanbooth@127.0.0.1>
Message-ID: <WvWdneCvReWQowbfRVn-sw@comcast.com>

Duncan Booth wrote:
> Steven Bethard wrote:
> 
>>But you can try it at home if you set __builtins__ to something other 
>>than the default:
>>
>>py> eval("""__import__("os").system('echo "hello"')""", 
>>dict(__builtins__=None))
>>Traceback (most recent call last):
>>   File "<interactive input>", line 1, in ?
>>   File "<string>", line 0, in ?
>>NameError: name '__import__' is not defined
>>
[snip]
>>
>>I know there have been security holes in this technique before, but I 
>>looked at the archives, and all the old ones I found have been
>>patched. 
>>  (Or at least I wasn't able to reproduce them.)
> 
> I guess you are referring to things like this not working when you use eval 
> with an empty __builtins__:
> 
> eval('''[ cls for cls in {}.__class__.__bases__[0].__subclasses__()
>    if '_Printer' in `cls` 
> ][0]._Printer__setup.func_globals['__builtins__']['__import__']''',
>   dict(__builtins__=None))
> 
> That gets blocked because func_globals is a 'restricted attribute', so I 
> can't get directly at __import__ that way

Among other things, yes, that's one of the big ones.  func_globals is 
inaccessible.  Also, IIRC the file constructor is inaccessible.

> but what I can do is to access 
> any new style class you have defined and call any of its methods with 
> whatever arguments I wish.

Any new style class that I've defined?  Or just any one I pass in as 
part of dict(__builtins__=None, ...)?  If the former, could you 
elaborate?  If the latter, then yes, I can see the problem.  However for 
the case where all you pass in is dict(__builtins__=None), is there 
still a risk?  Note that in the OP's case, all that is necessary is 
constant parsing, so no names need to be available.

STeVe


From axel at white-eagle.co.uk  Sun May  8 01:03:29 2005
From: axel at white-eagle.co.uk (axel at white-eagle.co.uk)
Date: Sun, 08 May 2005 05:03:29 GMT
Subject: New Python regex Doc
References: <1113301533.054410.203710@z14g2000cwz.googlegroups.com>
	<mailman.1813.1113355346.1799.python-list@python.org>
	<1113856843.023012.165500@l41g2000cwc.googlegroups.com>
	<1113908069.264676.207090@g14g2000cwa.googlegroups.com>
	<1115328523.852744.110390@f14g2000cwb.googlegroups.com>
	<1115423751.016177.250650@o13g2000cwo.googlegroups.com>
	<1115444726.627426.172260@g14g2000cwa.googlegroups.com>
	<1115508491.462229.294020@o13g2000cwo.googlegroups.com>
Message-ID: <B4hfe.44278$Cq2.29367@fe2.news.blueyonder.co.uk>

In comp.lang.perl.misc Xah Lee <xah at xahlee.org> wrote:
> Let me expose one another fucking incompetent part of Python doc, in
> illustration of the Info Tech industry's masturbation and ignorant
> nature.
 
> Note the need to inject the high-brow jargon ???greedy??? here as a
> latch on sentence.
 
> ???never greedy???? What is greedy anyway?
 
> ???Greedy???, when used in the context of computing, describes a

When used in terms of Usenet, I think it can be applied in the sense
of 'a troll who is greedy for attention'.

Hence the saying 'do not feed the troll'.

Axel



From michele.simionato at gmail.com  Tue May 31 03:52:33 2005
From: michele.simionato at gmail.com (Michele Simionato)
Date: 31 May 2005 00:52:33 -0700
Subject: scripting browsers from Python
Message-ID: <1117525953.255166.234420@g14g2000cwa.googlegroups.com>

I would like to know what is available for scripting browsers from
Python.
For instance, webbrowser.open let me to perform GET requests, but I
would like
to do POST requests too. I don't want to use urllib to emulate a
browser, I am
interested in checking that browser X really works as intended with my
application. Any suggestion?

           Michele Simionato



From timothy at open-networks.net  Tue May 10 01:17:11 2005
From: timothy at open-networks.net (Timothy Smith)
Date: Tue, 10 May 2005 15:17:11 +1000
Subject: sync dir's
Message-ID: <428043D7.8030203@open-networks.net>

what would be the best tool to use to sync my local dir with a remote 
one, say off a http resorce (although i'm open to other options there) i 
haven't gotten any feed back on my problems with loading pysvn on win98, 
and i can apprechiate if the dev's are too busy/can't be bothered with 
win98. but i still need to find a solution that can achieve the same 
result, and i'm starting to look for other options.



From tdelaney at avaya.com  Tue May  3 19:35:53 2005
From: tdelaney at avaya.com (Delaney, Timothy C (Timothy))
Date: Wed, 4 May 2005 09:35:53 +1000
Subject: problem in the compiler ?
Message-ID: <338366A6D2E2CA4C9DAEAE652E12A1DE025204D8@au3010avexu1.global.avaya.com>

Glauco Silva wrote:

> My code is like this:
> 
> MyClass()
> 
> class MyClass:
>      def __init__(self):
>          btn = RadioButton(command=self.Function)
>      def Function(self):
>          print "Enter in the function"
> 
> When a do this, the function 'Function' is call. And i don?t want
> this. What?s wrong ?

Are you absolutely sure this is the exact code? As it is this will not work - it will fail with a NameError.

You need to post a working piece of code that exhibits the behaviour, and include the exact error message (if any).

Tim Delaney


From glenn at connectfree.co.uk  Sun May  1 15:48:43 2005
From: glenn at connectfree.co.uk (Glenn Pierce)
Date: Sun, 01 May 2005 20:48:43 +0100
Subject: Wrapping c functions
Message-ID: <4275329B.6040603@connectfree.co.uk>

Hi I have been trying to wrap a c library called FreeImage for python 
and am having trouble with a couple of functions.

One function is

FreeImage_Load which takes parameters (enum, const char*, int)

I have wrapped the function with the following code
static PyObject *
freeimage_load(PyObject *self, PyObject *args)
{
        int format, flags;
        char* filename = "None";
        FIBITMAP *dib = NULL;

        if (!PyArg_ParseTuple(args, "isi", &format, filename, &flags))
            return NULL;

        dib = FreeImage_Load(format, filename, flags);

        return Py_BuildValue("o", dib);
}

However I am getting a segmentation fault at PyArg_ParseTuple.
Also I have little Idea what to return from the function. FIBITMAP * is 
an opaque pointer
that I pass to other FreeImage functions, I pretty certain
Py_BuildValue("o", dib) is wrong.

There is also the function
unsigned char  *FreeImage_GetBits(FIBITMAP *dib);

I and not sure how to return the bits to python.

I would probably like to display an image with the gtk function

drawable.draw_rgb_image(*gc*, *x*, *y*, *width*, *height*, *dith*, *rgb_buf*, *rowstride*)

here the RGB Image data is packed in a string as a
sequence of 8-bit RGB pixel triplets


but I have no idea how to get from unsigned char  * to that.

Any advice would be greatly appreciated.

Thanks


From mforal at gmail.com  Thu May 26 12:37:42 2005
From: mforal at gmail.com (mitchell)
Date: 26 May 2005 09:37:42 -0700
Subject: Store doctest verbose results to a variable
Message-ID: <1117125462.847390.112790@g49g2000cwa.googlegroups.com>

Is it possible to store doctest's verbose output to a variable?

For example:

  import doctest, my_test_module
  a = doctest.testmod(my_test_module)

The contents of 'a' is the tuple of passed and failed results. I tried
passing verbose mode to the testmod function, but 'a' is still a tuple.

Any help is greatly appreciated.



From peter at engcorp.com  Mon May 16 04:35:07 2005
From: peter at engcorp.com (Peter Hansen)
Date: Mon, 16 May 2005 04:35:07 -0400
Subject: Detect console close
In-Reply-To: <mailman.33.1116224830.8733.python-list@python.org>
References: <mailman.33.1116224830.8733.python-list@python.org>
Message-ID: <j5adnf5Oec_exhXfRVn-iQ@powergate.ca>

new pip wrote:
> In Windows, when I double click on my .py file, the program runs with
> a console. How can I detect when the console is closed? Any code
> samples are appreciated.

When the console has closed, your program has already exited, if I 
understand you correctly (which isn't certain: the question seems 
vague).  How would you expect to "detect" this with code if your code is 
no longer running?

Maybe you should also explain what you're really trying to accomplish, 
as there maybe other ways of doing it, or other solutions to your problem.

-Peter


From bcarey at ix.netcom.com  Wed May 25 11:59:48 2005
From: bcarey at ix.netcom.com (bc)
Date: 25 May 2005 08:59:48 -0700
Subject: pygame 1.6 for windows (python2.4)
In-Reply-To: <4293a405$0$23946$db0fefd9@news.zen.co.uk>
References: <1116959151.370529.261690@g49g2000cwa.googlegroups.com>
	<429380c5$0$24449$da0feed9@news.zen.co.uk>
	<1116969098.442603.193670@g43g2000cwa.googlegroups.com>
	<4293a405$0$23946$db0fefd9@news.zen.co.uk>
Message-ID: <1117036788.611345.11030@g49g2000cwa.googlegroups.com>

Got it!  Thank you so much for your much appreciated help.

Bill Carey



From f.geiger at vol.at  Wed May 18 11:46:40 2005
From: f.geiger at vol.at (F. GEIGER)
Date: Wed, 18 May 2005 17:46:40 +0200
Subject: pysqlite2.dbapi2.ProgrammingError: Incorrect number of
	bindingssupplied. The current statement uses 0,
	and there are -1 supplied.
References: <d6dfi8$ck8$1@news.hispeed.ch> <d6dfve$ct1$1@news.hispeed.ch>
	<mailman.117.1116363917.8733.python-list@python.org>
Message-ID: <d6fo0d$jrl$1@news.hispeed.ch>

Thank you Gerhard,

"Gerhard H?ring" <gh at ghaering.de> schrieb im Newsbeitrag
news:mailman.117.1116363917.8733.python-list at python.org...
> F. GEIGER wrote:
> > Arrgh, sorry for that post!
> >
> >       self._dbc.execute(q, data)
> >
> > where data is None, works with MySQL. For SQLite I have to write
> >
> >       if data is not None:
> >          self._dbc.execute(q, data)
> >       else:
> >          self._dbc.execute(q)
>
> No, you have to write:
>
> self._dbc.execute(q, (data,))
>
> in both drivers.
>
> i. e. the second parameter to execute *must* be a sequence. Some drivers
> (maybe MySQLdb, too) automatically correct the wrong call and transform a:
>

Okay, that makes sense.


> execute(sql, single_param)
>
> into a
>
> execute(sql, (single_param,))
>
> for you if they notice that "!PySequence_Check(single_param)".
>
> pysqlite 2 does not do this.
>
> HTH,
>
> -- Gerhard

Many thanks again
Franz




From nemesis at nowhere.invalid  Fri May 27 17:48:43 2005
From: nemesis at nowhere.invalid (Nemesis)
Date: Fri, 27 May 2005 21:48:43 GMT
Subject: [ANN] XPN 0.4.6
References: <20050527210213.3341.45078.XPN@orion.homeinvalid>
	<4297929b$0$150$e4fe514c@news.xs4all.nl>
Message-ID: <20050527215116.4147.91986.XPN@orion.homeinvalid>

Mentre io pensavo ad una intro simpatica "Irmen de Jong" scriveva:

>> XPN (X Python Newsreader XPN) is a multi-platform newsreader with
>> Unicode support. It has features like scoring/actions, X-Face and Face
>> decoding, muting of quoted text, newsrc import/export, find article and
>> search in the body, spoiler char/rot13, random taglines, and
>> configurable attribution lines.
>
> Wow, nice work!

Thanks.

> I'm using Thunderbird and am very happy with that, but
> looking quickly at your website it seems that XPN is a very
> nice application. Will it work on windows? It's not
> immediately clear to me...

Yes of course. You have thre options on Windowns:
1) You have already installed Python + GTK + pyGTK.
   In this case just use XPN source version.
2) You have installed GTK but not Python (I don't think this is your
   case ^__-).
   In this case you can use the binary version without GTK (the one
   large 2 MByte).
3) You don't have GTK and Python.
   In this case simply use the binary version (the larger one).

-- 
I'm not unemployed... I'm a consultant.
 
 |\ |       |HomePage   : http://nem01.altervista.org
 | \|emesis |XPN (my nr): http://xpn.altervista.org



From lbates at syscononline.com  Fri May 13 14:13:09 2005
From: lbates at syscononline.com (Larry Bates)
Date: Fri, 13 May 2005 13:13:09 -0500
Subject: property, how to use it?
In-Reply-To: <mailman.37.1116000486.29328.python-list@python.org>
References: <20050514012648.C48572886F@mail.iame.cn>
	<mailman.37.1116000486.29328.python-list@python.org>
Message-ID: <4284EE35.5070908@syscononline.com>

class Age:
    def __init__(self, years=None):
        if years is None: self.years=0
        else: self.years=years

    def __setattr__(self, key, value):
        if key == "years":
            if value < 0:
                print "ERROR-Years cannot be less than zero, setting to zero"
                self.years=0
                return

        self.__dict__[key]=value
        return

if __name__=="__main__":
    a=Age()
    #
    # Following will print zero because it is the default
    #
    print a.years
    #
    # Try to set negative
    #
    a.years=-1
    #
    # Other attributes work just fine
    #
    a.yyy=10

Larry Bates


Steve wrote:
> Hi,
> 
> Read this:
> http://www.python.org/2.2.3/descrintro.html#property
> 
> If you still don't understand or are confused about it's usage, ask here.
> 
> Hint: Suppose you need to create an Age class with a 'years' attribute
> and ensure that, (assuming I create an object a = Age())
> 1) when one tries to access 'a.years', a '0' would be returned even if
> the value was not set or was set to a negative value, and
> 
> 2) If a value is assigned to the 'years' attribute, we should check
> for negative values.
> 
> HTH
> Regards
> Steve



From "myname" at example.invalid  Sun May 29 10:07:57 2005
From: "myname" at example.invalid (VK)
Date: Sun, 29 May 2005 16:07:57 +0200
Subject: Copy paste in entry widget
In-Reply-To: <1117200716.423741.257870@f14g2000cwb.googlegroups.com>
References: <1117200716.423741.257870@f14g2000cwb.googlegroups.com>
Message-ID: <3fu0mlF9fprbU1@news.dfncis.de>

Michael Onfrek wrote:
> Hi,
> is copy, paste, cut of selection possible in entry widget? Docs say
> selection must be copied by default, in my programm it doesn't work.
> Regards, M.O.
> 
Hear it is

         def paste(self):
             self.entry.event_generate('<Control-v>')
         def cut(self):
             self.entry.event_generate('<Control-x>')
         def copy(self):
             self.entry.event_generate('<Control-c>')


From frank at chagford.com  Mon May  2 06:26:25 2005
From: frank at chagford.com (Frank Millman)
Date: 2 May 2005 03:26:25 -0700
Subject: Best way to create temporary file?
In-Reply-To: <d53oj0$8en$1@gemini.csx.cam.ac.uk>
References: <246a4e07.0504290311.7d692401@posting.google.com>
	<p%pce.71049$IN.1224311@twister2.libero.it>
	<246a4e07.0505010034.28055fd@posting.google.com>
	<d53oj0$8en$1@gemini.csx.cam.ac.uk>
Message-ID: <1115029585.585596.20910@o13g2000cwo.googlegroups.com>

Ok, thanks for the advice.

Frank



From timothy at open-networks.net  Tue May 17 07:47:27 2005
From: timothy at open-networks.net (Timothy Smith)
Date: Tue, 17 May 2005 21:47:27 +1000
Subject: query progress bar
In-Reply-To: <d6ckkp$ttg$1@news01.versatel.de>
References: <mailman.65.1116284481.8733.python-list@python.org>	<1116286913.207477.219180@g44g2000cwa.googlegroups.com>	<mailman.69.1116288978.8733.python-list@python.org>
	<d6ckkp$ttg$1@news01.versatel.de>
Message-ID: <4289D9CF.3000500@open-networks.net>

Bernhard Holzmayer wrote:

>Timothy Smith wrote:
>
>  
>
>>i'm using pypgsql
>>    
>>
>
>Assuming you work with PostgreSQL, then:
>You know the EXPLAIN command?
>
>EXPLAIN will give you a very accurate estimation for the expense for the
>query. 
>(You'll have to find out what cost means in terms of your progress.)
>
>I did never try this using pypgsql, but if it works, this might be your
>solution...
>
>The precision of EXPLAIN, however, depends on the modifications since the 
>last time you ran VACUUM on the DB.
>If the size of tables or indices didn't suffer considerable changes since
>then, the estimation should be quite accurate.
>
>Bernhard
>
>  
>

i've never heard of pypgsql supporting andthing like that, but i'll have 
a look



From Moiz.Golawala at ge.com  Tue May 17 14:39:07 2005
From: Moiz.Golawala at ge.com (Golawala, Moiz M (GE Infrastructure))
Date: Tue, 17 May 2005 14:39:07 -0400
Subject: using adodbapi -  problem returning Values from Stored Procedure
Message-ID: <CE90A4CF2E5E9C4890AE5D9D8A5EFAE30B780224@CINMLVEM10.e2k.ad.ge.com>

Hi All, 

I am having problem returning values from a Stored Procedure that creates a dynamic table (table variable) inserts values during a procedure and then I select from that dynamic table to furnish values to python.

This does not work
MY PYTHON CODE IS:

import adodbapi
connStrSQLServer = r"Provider=SQLOLEDB.1; User ID=sa; Password=tester; Initial Catalog=someDB;Data Source=someSource" 
db = adodbapi.connect(connStrSQLServer)    
cursor = db.cursor()
 
sql = """test_procedure """

cursor.execute(sql)
results = cursor.fetchall()

MY TRANSACT SQL CODE IS:

ALTER  PROCEDURE dbo.test_procedure

AS
	DECLARE @dynamicTable TABLE  (col1 int)
	INSERT INTO @dynamicTable
		VALUES (123)
	SELECT * FROM @dynamicTable

THIS IS THE ERROR I GET

   results = cursor.fetchall()
  File "C:\Python23\Lib\site-packages\adodbapi\adodbapi.py", line 692, in fetch
ll
    return self._fetch()
  File "C:\Python23\Lib\site-packages\adodbapi\adodbapi.py", line 623, in _fetc

    self._raiseCursorError(Error,None)
  File "C:\Python23\Lib\site-packages\adodbapi\adodbapi.py", line 407, in _rais
CursorError
    eh(self.conn,self,errorclass,errorvalue)
  File "C:\Python23\Lib\site-packages\adodbapi\adodbapi.py", line 38, in standa
dErrorHandler
    raise errorclass(errorvalue)
Error: None
[]

This works
The python code is the same
The SQL Code is:

ALTER  PROCEDURE dbo.test_procedure

AS
	INSERT INTO somePhysicalTable		
		VALUES (123)
	SELECT * FROM somePhysicalTable


Notice that the only difference between the 2 procedures is that in one case I am using a dynamic (table variable) table and in the other I am using an actual physical table. Does anyone have a clue why one works and the other does not.

Any help appreciated! Thanks in advance

Thanks,
Moiz Golawala
GE Infrastructure, Security
Software Engineer
Enterprise Solutions

T 561 912 5972
F 561 994 6572
E moiz.golawala at ge.com 
www.gesecurity.com

791 Park of Commerce Blvd., Suite 100
Boca Raton, FL, 33487, U.S.A.
GE Security, Inc.



From sateeshkavuri at yahoo.com  Tue May 24 03:31:44 2005
From: sateeshkavuri at yahoo.com (Sateesh)
Date: Tue, 24 May 2005 07:31:44 GMT
Subject: Access lotus notes using Python
References: <lWike.155$NV3.3324@news1.nokia.com>
	<UEjke.447$2u1.383@newssvr19.news.prodigy.com>
	<prk9m2-2gi.ln1@nb2.stroeder.com>
	<Vdrke.1084$uu.291@newssvr33.news.prodigy.com>
Message-ID: <ALAke.264$_k2.4238@news2.nokia.com>

Hi,
What I am trying to do is to retrieve data from Lotus Notes Domino server
and display the results in some specific format. I initially thought of
doing it using Java JDBC (specifically thru JdbcDomino.jar file), but was
not successful in getting the jar file (looks like IBM has removed the
support for JDBC for LotusNotes).
So now I am trying Python to get my work done. I downloaded pywin and
installed it. I am trying ways to connect to the Domino server, but could
not get hold of the API to do so. Also pywin itself seems to be having lots
of bugs.

Any help is appreciated.

regards,
Sateesh

"Kartic" <removethis.kartic.krishnamurthy at gmail.com> wrote in message
news:Vdrke.1084$uu.291 at newssvr33.news.prodigy.com...
> The Great 'Michael Str?der' uttered these words on 5/23/2005 2:43 PM:
> > Kartic wrote:
> >
> >>The Great 'Sateesh' uttered these words on 5/23/2005 7:14 AM:
> >>
> >>
> >>>Is it possible to access Lotus notes using Python? Can anyone provide
me
> >>>some pointers?
> >>
> >>Yes, you can... You need the win32all distribution installed and you can
> >>access Notes using the COM interface (win32com.client).
> >
> >
> > There could be even more cross-platform programming options depending
> > what "access Lotus Notes" really means for the original poster.
> >
> > Depending on configuration a Domino server might have several Internet
> > protocol services for accessing Notes data (POP3, IMAP, LDAP, etc.).
> >
> > Ciao, Michael.
>
>
> So I guess it upto the Sateesh to tell whether he needs more information
> or not.




From Scott.Daniels at Acm.Org  Sun May 15 23:31:01 2005
From: Scott.Daniels at Acm.Org (Scott David Daniels)
Date: Sun, 15 May 2005 20:31:01 -0700
Subject: Quick Reference from module doc strings.
In-Reply-To: <mailman.15.1116204313.8733.python-list@python.org>
References: <mailman.65.1116085574.29328.python-list@python.org>	<1116199904.205240.58300@g49g2000cwa.googlegroups.com>
	<mailman.15.1116204313.8733.python-list@python.org>
Message-ID: <42880d98$1@nntp0.pdx.net>

Ron Adam wrote:
> John Machin wrote:
> 
>> Ron Adam wrote:
>>
>>> Does anyone have suggestions on how to improve this further?
>>
>> Not functionally (from me, yet). However if you can bear a stylistic
>> comment, do read on :-)
>>
>>>         elif (isinstance(object,str)
>>>                 or isinstance(object,int)
>>>                 or isinstance(object,bool)
>>>                 or isinstance(object,tuple)
>>>                 or isinstance(object,list)
>>>                 or isinstance(object,dict)):
>>
>> Since Python version 2.2, the 2nd arg of isinstance may be a tuple. You
>> could define this up front, with a meaningful name:
>>
>> TYPES_WHICH_whatever = (str, int, bool, etc etc)
> 
> Actually I'm begging for comments, it's the beginning of a project not 
> the end.  So thanks!  ;-)
> 
> I changed it to:
> 
>    if type(object)==str:
>        ....
>    elif type(object) in (str,int,bool,tuple,list,dict):
>        ....

Althought object is a horrible name for your own value (there is a builtin
object which you use for defining new-style classes), you probably want:

     if isinstance(object, (str,int,bool,tuple,list,dict)):
         ...
or (as John Machin was trying to suggest):

     if isinstance(object, TYPES_WHICH_whatever):
         ...

This allows you to use instances of those builtin types and any
user-defined subtypes.

> Thanks, I don't need the isinstance(), type works here just as well.

But the isinstance version is better than the type(...) in ... version.

--Scott David Daniels
Scott.Daniels at Acm.Org


From TheConcernedOne at elsewhere.com  Sun May 15 19:33:38 2005
From: TheConcernedOne at elsewhere.com (TheConcernedOne at elsewhere.com)
Date: Sun, 15 May 2005 23:33:38 GMT
Subject: The world is really unstable these days......
Message-ID: <49B3F3B1.646A6FE6@elsewhere.com>

We've got a lot to deal with these days. Terrorism, Recession, Weather and more. It's all got me concerned.

I thought I'd tell you all about this group I found where everyday people get together and try to learn how to deal with it all.
(I used to be a member, but I'm moving to an area that doesn't have internet, so I left a few days ago. Internet is off tomorrow)


Here's a bit on the group. Check it out or don't.

misc_survivalism_moderated ? Survivalism and Preparedness. 
http://groups.yahoo.com/group/misc_survivalism_moderated

This list is for those who want themselves and their loved ones to survive and prosper during hard times.

War, riots, famine, crime, drought, flooding, fire, contaminated water supplies, inflation, job loss, and many more.

Are you ready to deal with any situation?

Join us as we learn from each other how to survive.

On-topic: Food storage, firearms, canning, gardening, self-sustaining communities, back to basics, water purification, alternative power,
conservation, homesteading, first aid and more.

Off-topic: Politics, religion, current affairs, philosophy, conspiracy theories, New World Order, racism.
It dined, you answered, yet Annie never familiarly irritated 
about the kiosk.  

Plenty of bad painters are glad and other raw tailors are old, but will 
Wednesday comb that?  What did Ronette judge the orange without the 
deep car?  My stale carpenter won't dream before I clean it.  For 
Rob the jar's sad, above me it's abysmal, whereas near you it's 
learning full.  It's very healthy today, I'll arrive wanly or 
Saeed will pull the poultices.  I am truly long, so I jump you.  

The desk before the young cellar is the dog that dyes lovingly.  Try 
nibbling the desert's short grocer and Hakeem will talk you!  He'll be 
promising between ugly Eve until his cobbler wanders quickly.  Otherwise the 
bandage in Hassan's gardner might care some lower shopkeepers.  

I was moulding doses to noisy Ikram, who's recollecting to the 
can's lake.  We pour the easy disk.  Until Alfred sows the shirts 
angrily, Toni won't irrigate any lazy rivers.  Get your loudly 
killing smog on my shower.  When will we measure after Ramez 
fears the stupid structure's kettle?  These days, Darin never 
believes until Roxanne opens the solid teacher locally.  To be 
lost or sweet will converse thin diets to stupidly live.  She'd rather 
explain totally than fill with Ayub's inner walnut.  No stickers 
neatly depart the proud river.  The younger onion rarely solves 
Courtney, it likes Kenneth instead.  

What Feyd's fat card attempts, Salahuddin grasps in back of unique, 
filthy stations.  Her hen was blunt, empty, and rejects in front of the 
office.  Better expect pitchers now or Garrick will wistfully 
move them in back of you.  

He should laugh sticky weavers, do you waste them?  

We walk them, then we sadly burn Marwan and Robbie's hot exit.  
She will hatefully hate before Hassan when the tired balls scold 
beside the sharp cave.  Every dull goldsmiths for the rich mountain were 
lifting in the kind stadium.  

No durable dirty coffee smells pickles with Ayman's rural frame.  
He might superbly cook poor and kicks our hollow, bitter dusts 
with a road.  Lakhdar!  You'll shout candles.  There, I'll taste the 
frog.  

Don't look a paper!  Tell Abbas it's cold improving near a butcher.  
What did Sue cover with all the printers?  We can't behave tapes unless 
Woody will weakly receive afterwards.  

Don't change eventually while you're climbing through a light 
pumpkin.  If the open clouds can play wrongly, the lean elbow may 
call more bedrooms.  He can help believably, unless Wail teases 
farmers throughout Wednesday's enigma.  She wants to join good 
tyrants about Allan's sign.  Occasionally Marion will love the 
pool, and if Mohammar bimonthly excuses it too, the code will 
seek inside the elder college.  

Yesterday, cats recommend among strong doorways, unless they're 
distant.  Don't try to attack the floors fully, order them amazingly.  

Hardly any tags will be strange smart boats.  Let's creep around the 
polite rooms, but don't sow the handsome figs.  





From exarkun at divmod.com  Mon May  2 10:12:38 2005
From: exarkun at divmod.com (Jp Calderone)
Date: Mon, 02 May 2005 14:12:38 GMT
Subject: BitKeeper for Python?
In-Reply-To: 0
Message-ID: <20050502141238.15422.590101167.divmod.quotient.13830@ohm>

On 02 May 2005 09:30:05 GMT, Nick Craig-Wood <nick at craig-wood.com> wrote:
>John Smith <not at home.com> wrote:
>>  I am going to be working with some people on a project that is going to be
>>  done over the internet. I am looking for a good method of keeping everyone's
>>  code up to date and have everyone be able to access all the code including
>>  all the changes and be able to determine what parts of the code were
>>  changed.
>>
>>  If it were opensource that would be even better.
>
>You could try Mercurial
>
>  http://www.selenic.com/mercurial/
>
>which aims at being a true bk replacement.  Its also written in
>python.  Its being developed at the moment...
>

  "Being developed at the moment" is something of an understatement.  It's less than a month old.  Less than a month old.  Compare this to such systems as CVS (more than 16 years old) and I think everyone can agree that Mercurial may need a teensy bit more work before it is interesting to people looking for an RCS.

  Jp


From Ron4512328 at yahoo.com  Wed May 18 18:52:28 2005
From: Ron4512328 at yahoo.com (Ron4512328 at yahoo.com)
Date: 18 May 2005 15:52:28 -0700
Subject: * * * Important Please Read * * * May 18,
	2005 6:52:44 pm (Best Viewed at 1024x768) * * * * * * * * * * * * * *
	* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
	* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
	* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
	* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
	* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
	* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
	* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
	* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
	* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
	* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
	* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
	* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
	* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
	* * * * * * * * * * * * * * * * * *
Message-ID: <1116456748.906548.175760@g49g2000cwa.googlegroups.com>

Best Viewed at << 1024x768 >>
http://groups-beta.google.com/group/alt.religion.christian/browse_thread/thread/73352e0ed6923d23/1ea6c7a1ea6923ab?hl=en#1ea6c7a1ea6923ab

*******************************************************************************************
*******************************************************************************************
*******************************************************************************************
*******************************************************************************************


THE MOST IMPORTANT QUESTION OF YOUR LIFE



This is the most important question of your life.

The question is: Are you saved?

It is not a question of how good you are, nor if you
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The reason some people don't know for sure if they are
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 on a cross to pay our sin debt in full.

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Amen.

Welcome to the family of God if you just allowed God
to save you.

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that you will live in Heaven forever when this life
comes to an end.

As a child of God we are to avoid sin(wrongdoing), but
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I write this to you so that you will not sin. But if
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have rejected Jesus Christ.

The good news is that you can avoid Hell by allowing
Jesus Christ to save you today. Only then will you
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what happens you are on your way to Heaven.




Praise the Lord!
Servant of the Lord Jesus Christ
Ronald L. Grossi


* Show this to your family and friends so they can also be saved.

* This message may get deleted so you may want to print a copy.

* Just press the [Ctrl][P] keys on your keyboard to print this page.



____________________________________________________________




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http://www.powertochange.com/questions/qna2.html

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*******************************************************************************************
*******************************************************************************************
*******************************************************************************************
*******************************************************************************************



From wblock at wonkity.com  Sat May 28 23:02:11 2005
From: wblock at wonkity.com (Warren Block)
Date: Sun, 29 May 2005 03:02:11 -0000
Subject: Strings for a newbie
References: <d7726f$fdg$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
	<mailman.228.1117333376.18027.python-list@python.org>
Message-ID: <slrnd9ic5j.18uv.wblock@speedy.wonkity.com>

James Hofmann <jhofmann at ucsc.edu> wrote:
> Malcolm Wooden <mwooden <at> dtptypes.com> writes:
>> 
>> I'm trying to get my head around Python but seem to be failing miserably. I 
>> use RealBasic on a Mac and find it an absolute dream! But Python....UGH!
>> 
>> I want to put a sentence of words into an array, eg "This is a sentence of 
>> words"
>> 
>> In RB it would be simple:
>> 
>> Dim s as string
>> Dim a(-1) as string
>> Dim i as integer
>> 
>> s = "This is a sentence of words"
>> For i = 1 to CountFields(s," ")
>>   a.append NthField(s," ",i)
>> next
>> 
>> That's it an array a() containing the words of the sentence.

[snip]

> Now a "slim" version:
>
> s = "This is a sentence of words"
> print s.split()

To match the original program, it should be:

s = "This is a sentence of words"
a = s.split()

...assigning the list returned by split() to a variable called a.

-- 
Warren Block * Rapid City, South Dakota * USA


From steven.bethard at gmail.com  Wed May 11 19:02:09 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Wed, 11 May 2005 17:02:09 -0600
Subject: Python Documentation (should be better?)
In-Reply-To: <mailman.396.1115842071.29826.python-list@python.org>
References: <mailman.396.1115842071.29826.python-list@python.org>
Message-ID: <RrmdnZkZfa1sEx_fRVn-1g@comcast.com>

Shi, Jue wrote:
> I agree. The PHP manual is really good, especially the examples and user
> contributed notes.

Dunno if anyone's spent much time editing this, but a while a go AMK posted:

http://www.amk.ca/diary/archives/cat_python.html#003336

which puts a wiki side-by-side with the Python docs:

http://pydoc.amk.ca/frame.html

STeVe


From janeaustine50 at hotmail.com  Mon May 16 13:15:22 2005
From: janeaustine50 at hotmail.com (janeaustine50 at hotmail.com)
Date: 16 May 2005 10:15:22 -0700
Subject: Anyway to designating the encoding of the "source" for compile?
References: <1116087091.856022.155340@z14g2000cwz.googlegroups.com>
Message-ID: <1116263722.499345.73260@g43g2000cwa.googlegroups.com>

janeaustine50 at hotmail.com wrote:
> Python's InteractiveInterpreter uses the built-in compile function.
>
> According to the ref. manual, it doesn't seem to concern about the
> encoding of the source string.
>
> When I hand in an unicode object, it is encoded in utf-8
automatically.
> It can be a problem when I'm building an interactive environment
using
> "compile", with a different encoding from utf-8. IDLE itself has the
> same problem. ( '<a string with non-ascii-encoding>' is treated okay
> but u'<a string with non-ascii-encoding>' is treated wrong.)
>
> Any suggestions or any plans in future python versions?

I've read a posting from Martin Von Loewis mentioning trying to build
in that feature(optionally marking encoding when calling "compile").
Anyone knows how it is going on?



From elbertlev at hotmail.com  Sat May  7 23:25:29 2005
From: elbertlev at hotmail.com (elbertlev at hotmail.com)
Date: 7 May 2005 20:25:29 -0700
Subject: Newbie : checking semantics
In-Reply-To: <1115503520.392357.230620@f14g2000cwb.googlegroups.com>
References: <1115503520.392357.230620@f14g2000cwb.googlegroups.com>
Message-ID: <1115522729.126979.95210@g14g2000cwa.googlegroups.com>

> I am new to python and was very enthustic about its possibilities
when
> I discover that python is really what it is : just a scripting
> language.
......
> The fact that python doesn't check if the symbol ... is defined, is
really bad ...

1. For a language like Python full static checking is IMPOSSIBLE.
Consider setattr() with attribute name read from a file (f.e. names of
the "columns" in the database).

2. Trust me (and other Python programmers most likely would agree) this
type of error happens much more seldom then newbies (especially coming
from strongly typed languages) imagine while adjusting to the language.

3. Python advantages "overpower" drawbacks 10 to 1.

4. Most likely you never used Fortran :)



From manu.1982 at gmail.com  Thu May 26 18:06:58 2005
From: manu.1982 at gmail.com (Manu)
Date: 26 May 2005 15:06:58 -0700
Subject: ftplib fails when directory name contains spaces
Message-ID: <1117141499.924280.19140@z14g2000cwz.googlegroups.com>

Hi,
ftplib fails to cwd into a directory which contains spaces in it's
name.How do i correct this?

Regards
Manu



From fp at tiny.be  Thu May  5 09:47:36 2005
From: fp at tiny.be (pinky)
Date: 5 May 2005 06:47:36 -0700
Subject: ERP & CRM in Python
In-Reply-To: <xn0e1s70csluct007wolfgangkellernospamgmxde@news.individual.de>
References: <1114942643.046728.238980@g14g2000cwa.googlegroups.com>
	<xn0e1s70csluct007wolfgangkellernospamgmxde@news.individual.de>
Message-ID: <1115300855.892100.261280@f14g2000cwb.googlegroups.com>


Wolfgang Keller wrote:
> pinky wrote:
>
> > download, doc, forum ; http://tinyerp.org
>
> Why not downloadable and printable PDF documentation instead of
> online-HTML.

Because
  1. we need interaction with contributors in our doc.
  2. we write docs in the wiki: http://tinyerp.org/wiki
We are writing a script to render a PDF from our doc. (using
openreport.org)

> HTML is _extremely_ inconvenient, both for offline use and for
> printing. Why printing? Because reading siginficant amounts of text
> on-screen is simply impossible, as is reading an on-screen manual
while
> actually trying out the software (<-> screenspace).
yes, but we need html doc for our contextual help in Tiny ERP.

> Why not mailing lists instead of online-"forums".
There is some mailing lists;
http://tinyerp.org/lists.php
... but nobody uses it.

> The former was made for efficient human-to-human communication, the
> latter not.
I agree.

Fabien



From bill.mill at gmail.com  Thu May 19 10:42:58 2005
From: bill.mill at gmail.com (Bill Mill)
Date: Thu, 19 May 2005 10:42:58 -0400
Subject: Convert from numbers to letters
In-Reply-To: <1116511005.900715.107260@o13g2000cwo.googlegroups.com>
References: <1116511005.900715.107260@o13g2000cwo.googlegroups.com>
Message-ID: <797fe3d40505190742321f9cff@mail.gmail.com>

On 19 May 2005 06:56:45 -0700, rh0dium <sklass at pointcircle.com> wrote:
> Hi All,
> 
> While I know there is a zillion ways to do this..  What is the most
> efficient ( in terms of lines of code ) do simply do this.
> 
> a=1, b=2, c=3 ... z=26
> 
> Now if we really want some bonus points..
> 
> a=1, b=2, c=3 ... z=26 aa=27 ab=28 etc..
> 

just for fun, here is one way to do it with a listcomp. Obfuscated
python fans, rejoice!

>>> alpha = 'abcdefghijklmnopqrstuvwxyz'
>>> for i, digraph in enumerate(sorted([''.join((x, y)) for x in alpha \
    for y in [''] + [z for z in alpha]], key=len)):
...     locals()[digraph] = i + i
...
>>> a
1
>>> b
2
>>> ac
29
>>> dg
111
>>> zz
702
>>> 26**2 + 26
702

> Thanks
> 
> --
> http://mail.python.org/mailman/listinfo/python-list
>


From qwweeeit at yahoo.it  Fri May 13 16:28:39 2005
From: qwweeeit at yahoo.it (qwweeeit at yahoo.it)
Date: 13 May 2005 13:28:39 -0700
Subject: MySQL application example
Message-ID: <1116016119.654345.185270@f14g2000cwb.googlegroups.com>

Hi all,
I have in mind to learn to use MySQL, not only to use it myself but
also to persuade a friend of mine to use Python and MySQL and abandon
Informix and its old fashioned language (and also SCO UNIX to migrate
to Linux).
Apart reading tutorials, I have found that the best thing to learn a
complex argument is to examine and study a big "working" application
(in the case of MySQL with, possibly, the relevant databases already
filled with data).
Can you direct me to such an application (the field is not very
important: could be astronautical data, ecological data, business data
etc ...)
DBMS has such vast fields of applications...
I have already some experience on databases, but not as serious as the
relational DBMS MySQL.

Bye.

P.S. To give you an idea of my goals:
- my wife wants a recipes' db, obtained by scanning (and OCR) her
cook's school documents (and photo's)
- with my friend I want to convert in Python his Informix program to
manage a small business activity



From Sebastien.Boisgerault at gmail.com  Wed May 18 14:23:49 2005
From: Sebastien.Boisgerault at gmail.com (=?iso-8859-1?q?S=E9bastien_Boisg=E9rault?=)
Date: 18 May 2005 11:23:49 -0700
Subject: NaN support etc.
In-Reply-To: <mailman.160.1116438390.8733.python-list@python.org>
References: <mailman.160.1116438390.8733.python-list@python.org>
Message-ID: <1116440628.983531.157520@g44g2000cwa.googlegroups.com>


Search for:
   + fpconst / PEP 754
   + Tim Peters IEEE 754 accident

"""what-the-world-needs-now-is-nannanny.py-ly y'rs""  - SB



From peter at engcorp.com  Fri May 27 18:33:44 2005
From: peter at engcorp.com (Peter Hansen)
Date: Fri, 27 May 2005 18:33:44 -0400
Subject: write to the same file from multiple processes at the same time?
In-Reply-To: <7xacmgnwvr.fsf@ruckus.brouhaha.com>
References: <mailman.175.1117200711.18027.python-list@python.org>
	<7x1x7siy3b.fsf@ruckus.brouhaha.com>
	<LdOdnf5kluybBwrfRVn-2Q@powergate.ca>
	<7xacmgnwvr.fsf@ruckus.brouhaha.com>
Message-ID: <fcednbqcccHBPQrfRVn-2w@powergate.ca>

Paul Rubin wrote:
> Peter Hansen <peter at engcorp.com> writes:
> 
>>And PySQLite conveniently wraps the relevant calls with retries when
>>the database is "locked" by the writing process, making it roughly a
>>no-brainer to use SQLite databases as nice simple log files where
>>you're trying to write from multiple CGI processes like the OP wanted.
> 
> Oh, ok.  But what kind of locks does it use?  

I think the FAQ can answer that better than I can, since I'm not sure 
whether you're asking about any low-level (OS) locks it might use or 
higher-level (e.g. database-level locking) that it might use.  In 
summary, however, at the database level it provides only coarse-grained 
locking on the entire database.  It *is* supposed to be a relatively 
simple/lightweight solution compared to typical RDBMSes...

(There's also an excrutiating level of detail about this whole area in 
the page at http://www.sqlite.org/lockingv3.html ).

-Peter


From simon.brunning at gmail.com  Tue May  3 09:55:54 2005
From: simon.brunning at gmail.com (Simon Brunning)
Date: Tue, 3 May 2005 14:55:54 +0100
Subject: sorting list and then return the index of the sorted item
In-Reply-To: <1115127433.984686.99060@f14g2000cwb.googlegroups.com>
References: <1115127433.984686.99060@f14g2000cwb.googlegroups.com>
Message-ID: <8c7f10c6050503065577f570b6@mail.gmail.com>

On 3 May 2005 06:37:14 -0700, custard_pie <ckwiguno at gmail.com> wrote:
> I need help sorting a list...I just can't figure out how to sort a list
> and then return a list with the index of the sorted items in the list
> for example if the list I want to sort is [2,3,1,4,5]
> I need [2,0,1,3,4] to be returned

>>> spam = [2,3,1,4,5]
>>> list(index for index, item in sorted(enumerate(spam), key=lambda
item: item[1]))
[2, 0, 1, 3, 4]

-- 
Cheers,
Simon B,
simon at brunningonline.net,
http://www.brunningonline.net/simon/blog/


From borges2003xx at yahoo.it  Tue May 24 05:17:33 2005
From: borges2003xx at yahoo.it (borges2003xx at yahoo.it)
Date: 24 May 2005 02:17:33 -0700
Subject: searching substrings with interpositions
Message-ID: <1116926253.186047.195260@g43g2000cwa.googlegroups.com>

hi everyone.
a problem:
two binary strings, a="0101" b="000011110100";
i search a function f(a,b) that gives 1 if a is "contained" in b with
any sub strings interposed.
in this example a in contained cause 000<01>111<01>00 but also
0<0>001111<101>00"
 but also <0>0001111<101>00 but also 000<0>1111<01>0<0> etc....
any idea?
Thanx in advance.
Giorgi Borghi



From klaus at seistrup.dk  Mon May  2 09:07:13 2005
From: klaus at seistrup.dk (Klaus Alexander Seistrup)
Date: Mon, 2 May 2005 13:07:13 +0000 (UTC)
Subject: Locale and cookies
References: <1115037383.913329.143470@l41g2000cwc.googlegroups.com>
Message-ID: <slrnd7c9g1.h8e.klaus@main.szn.dk>

dagurp at gmail.com wrote:

> I tried to fix this by changing the locale back to "English"
> before creating cookies and that works on Windows but not for
> Linux. If I use "en_EN.ISO8859-1" it works on Linux but not
> on Windows.

How about setting locale to "C" or "POSIX"?

-- 
Klaus Alexander Seistrup
Magnetic Ink, Copenhagen, Denmark
http://magnetic-ink.dk/


From h_stovold at hotmail.com  Tue May  3 11:07:36 2005
From: h_stovold at hotmail.com (Heather Stovold)
Date: Tue, 3 May 2005 10:07:36 -0500
Subject: So many things that need to be decided....
References: <G3Ade.1022$fF6.12717@news1.mts.net> <d57pvo$rgb$1@bagan.srce.hr>
Message-ID: <LuMde.1078$fF6.14053@news1.mts.net>

> My personal suggestion would be to go with SQLite because it's a
> standard database which can be used with large number of other tools and
> languages.
>
> As for report generating features, I don't know of any free report
> generators that are as easy to use like the one in Access (e.g.
> point-and-click). Same goes for GUI tools.


Thank you - I'll check them out!




From wolfram.kriesing at gmail.com  Fri May 13 09:24:19 2005
From: wolfram.kriesing at gmail.com (Wolfram Kriesing)
Date: Fri, 13 May 2005 15:24:19 +0200
Subject: doc tags?
Message-ID: <965c85e5050513062433f180d3@mail.gmail.com>

i was already searching and remember i had seen something like "its not needed".

Anyway, are there any doc tags, like in Java/PHPDoc etc, where you can
describe parameters (@param[eter]), return values (@ret[urn]),
attributes (@var), references (@see), etc?

I guess I have just not found the link to the last flameware about it :-))

-- 
cu

Wolfram


From peter at engcorp.com  Mon May 30 21:39:57 2005
From: peter at engcorp.com (Peter Hansen)
Date: Mon, 30 May 2005 21:39:57 -0400
Subject: how to prepend string to a string?
In-Reply-To: <1117498752.591304.42280@g44g2000cwa.googlegroups.com>
References: <1117498752.591304.42280@g44g2000cwa.googlegroups.com>
Message-ID: <eZKdnYr_9esKXQbfRVn-pQ@powergate.ca>

flamesrock wrote:
> so I know you can append a string. But how do you *prepend* a string,
> as shown in the following code
> 
> #dirList = ['depth1','depth2','depth3']
> #string = """position"""
> #for x in len(dirList):
> #   string += '>> %s'%dirList.pop()    #(????????????)

There's not _really_ anything wrong with this code, provided the length 
of dirList is "short" (since otherwise the performance issues of growing 
strings with += may cause trouble).  It might also be preferable to 
change from the for statement to a "while dirList:" since that doesn't 
require the unused "x" and the confusion of apparently testing the 
length of a list that is getting shorter with each iteration.

-Peter


From rbsharp at gmx.de  Fri May 20 03:16:15 2005
From: rbsharp at gmx.de (rbsharp at gmx.de)
Date: 20 May 2005 00:16:15 -0700
Subject: Shift-JIS to UTF-8 conversion
In-Reply-To: <mailman.233.1116544224.8733.python-list@python.org>
References: <1116536705.864784.163540@o13g2000cwo.googlegroups.com>
	<mailman.233.1116544224.8733.python-list@python.org>
Message-ID: <1116573375.686710.251250@g49g2000cwa.googlegroups.com>

Hello,
I think the answer is basically correct but shift-jis is not a standard
part of
Python 2.3. You will either need to use Python 2.4 where the cjkcodes
are integrated or install them under Python 2.3. The link is
http://cjkpython.i18n.org/

You then also need:
import cjkcodecs.aliases

Richard

Jeff Epler wrote:
> I think you do something like this (untested):
>
> import codecs
>
> def transcode(infile, outfile, incoding="shift-jis",
>         outcoding="utf-8"):
>     f = codecs.open(infile, "rb", incoding)
>     g = codecs.open(outfile, "wb", outcoding)
>
>     g.write(f.read())
> # If the file is so large that it can't be read at once, do a loop
which
> # reads and writes smaller chunks
> #    while 1:
> #        block = f.read(4096000)
> #        if not block: break
> #        g.write(block)
> 
>     f.close()
>     g.close()
> 
> Jeff



From onurb at xiludom.gro  Thu May 26 11:56:36 2005
From: onurb at xiludom.gro (bruno modulix)
Date: Thu, 26 May 2005 17:56:36 +0200
Subject: Access from one class to methode of other class
In-Reply-To: <3fm112F8iqc2U1@news.dfncis.de>
References: <3flu22F8g4u4U1@news.dfncis.de>
	<1117113441.649947.315350@g44g2000cwa.googlegroups.com>
	<3fm112F8iqc2U1@news.dfncis.de>
Message-ID: <4295f1b6$0$12019$626a14ce@news.free.fr>

VK wrote:
>> I don't know if your're actually calling the classes '1' and '2', but
>> that's a really bad idea!
>>
>>
>>> class 2:
>>>   def ins(self)
>>>       d.entry.insert(variable)
>>
>>
>>
>> This is probably where you're getting the NameError. d is not defined,
>> so calling d.entry will generate an error.
>>
> 
> What is d = 1() in my example then?

a global variable.

> And how do I solve this problem?

passing d to the instance of 2 *could* be a solution.

-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From martin.witte at gmail.com  Sat May  7 11:35:21 2005
From: martin.witte at gmail.com (wittempj@hotmail.com)
Date: 7 May 2005 08:35:21 -0700
Subject: Need help subclassing Borg
In-Reply-To: <pan.2005.05.07.12.28.34.263372@REMOVETHIScyber.com.au>
References: <pan.2005.05.07.12.28.34.263372@REMOVETHIScyber.com.au>
Message-ID: <1115480121.527653.220780@o13g2000cwo.googlegroups.com>

See mr Martellis comment of 2001/09/06 in mentiond recipe, you then get
something like this

-#!/usr/bin/env python
-class Borg(object):
-    _shared_state = {}
-    def __init__(self):
-        self.__dict__ = self._shared_state
-
-class Duck(Borg):
-    def __init__(self):
-        super(Duck, self).__init__()
-        self.__covering = "feathers" # all ducks are feathered
-    def covering(self):
-        return self.__covering
-
-class Rabbit(Borg):
-    def __init__(self):
-        super(Rabbit, self).__init__()
-        self.__covering = "fur" # all rabbits are furry
-    def covering(self):
-        return self.__covering
-
-bugs = Rabbit()
-daffy = Duck()
-print daffy.covering()
-print bugs.covering()

martin at ubuntu:~$ ./test2.py
feathers
fur
martin at ubuntu:~$



From ville at spammers.com  Mon May 16 16:37:28 2005
From: ville at spammers.com (Ville Vainio)
Date: 16 May 2005 23:37:28 +0300
Subject: python-dev Summary for 2005-04-16 through 2005-04-30
References: <mailman.13.1116201983.8733.python-list@python.org>
	<1116258692.305537.244260@g49g2000cwa.googlegroups.com>
	<du77jhznj6r.fsf@lehtori.cc.tut.fi>
	<baednXPIjri_bRXfRVn-2g@comcast.com>
Message-ID: <du78y2elxfb.fsf@amadeus.cc.tut.fi>

>>>>> "Steven" == Steven Bethard <steven.bethard at gmail.com> writes:

    Steven> If you're interested in why Guido doesn't want blocks with
    Steven> arbitrary control flow, you should check out:

    Steven> http://mail.python.org/pipermail/python-dev/2005-May/053702.html

It's convincing, but I would still prefer to leave the decision of
pulling the trigger on the foot for the implementor of the block
function, with the recommendation that all exceptions are
propagated. What happened to "we are all adults here"?

I don't mind much, though, the new proposal looks good as well.

-- 
Ville Vainio   http://tinyurl.com/2prnb


From jhchu at hotmail.com  Thu May 19 01:50:13 2005
From: jhchu at hotmail.com (Chu, Jeong Ho)
Date: Thu, 19 May 2005 14:50:13 +0900
Subject: MMS download
Message-ID: <d6h9e4$q95$1@news.kreonet.re.kr>

Is it possible to download MMS stream by using python?

Please, let me know any clue.

Thanks in advance




From littlejohn.75 at news.free.fr  Thu May 12 13:16:17 2005
From: littlejohn.75 at news.free.fr (F. Petitjean)
Date: 12 May 2005 17:16:17 GMT
Subject: Can  get  reference of a part of a list?
References: <d6020b$3a7$1@news.yaako.com>
Message-ID: <42838f60$0$318$626a14ce@news.free.fr>

Le Fri, 13 May 2005 00:58:49 +0800, flyaflya a ?crit :
> I want make a 2-D array from a list,all elements is references of 
> list's,like this:
> a = [1,2,3,4]
> b = [ [1,2], [3,4] ]
> when change any elements of a, the elements of b will change too, so I 
> can  use some function for list to change b.
> c/c++ can work in this way,I think let b[0] = a[0:2], b[1] = a[2:3],but 
>     it's not reference,it's copy.
If the original list contains only numeric values of the same type, i.e
only integers or only floats, the Numeric array reshape() function is
what you need :

import Numeric as N
aa = N.array([1, 2, 3, 4])
bb = N.reshape(aa, (2, 2))
print bb
array([[1, 2],
       [3, 4]])
bb[0][:] = (7, 8)
aa
array([7, 8, 3, 4])
That is there is only one homogeneous list of values, no copy.


From jepler at unpythonic.net  Mon May  2 21:37:16 2005
From: jepler at unpythonic.net (Jeff Epler)
Date: Mon, 2 May 2005 20:37:16 -0500
Subject: cgi "print statement" in multithreaded enviroment?
In-Reply-To: <d56f4t$sch$1@sea.gmane.org>
References: <d56f4t$sch$1@sea.gmane.org>
Message-ID: <20050503013716.GA3367@unpythonic.net>

You could write something like
    class ThreadSpecificFile:
        def set_stdout(f):
            self.files[thread_id] = f
        def write(data):
            self.files[thread_id].write(data)
    sys.stdout = ThreadSpecificFile()
where you'll have to fill out a few more things like thread_id,
__init__, and a way to clean up items from self.files when a thread
passes away.

Jeff
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From calle.erlandsson at gmail.com  Sat May 28 02:04:19 2005
From: calle.erlandsson at gmail.com (Helmutt)
Date: 27 May 2005 23:04:19 -0700
Subject: Questions about wxPython...
Message-ID: <1117260259.215197.141570@f14g2000cwb.googlegroups.com>

Hi all!
I'm trying to learn myself wxPython, and I got some questions:

Whats the name of the event that occur when I press the
exit/cross-button on the frame?
How do I connect a function with that event?
How do I start a new process of the same program I'm running? I do not
want to create a new frame, I want to start a new process of the
program I'm running, but I don't want the first instance to wait for
the other.

Can somebody help?



From shane at hathawaymix.org  Tue May 31 17:55:12 2005
From: shane at hathawaymix.org (Shane Hathaway)
Date: Tue, 31 May 2005 15:55:12 -0600
Subject: anygui,anydb, any opinions?
In-Reply-To: <Xns9667883C1D343jreeder@63.223.7.253>
References: <Xns9667883C1D343jreeder@63.223.7.253>
Message-ID: <429CDD40.6050908@hathawaymix.org>

rzed wrote:
> That's all I'm talking about here. To be able to write a Python 
> application that can ultimately be displayed using wxWidgets or Qt 
> or Tkinter or Curses. Then, without having to do more than to 
> change which interface package is imported, to expect to see the 
> result displayed. To have it just happen, and to have expectations 
> when using Python that it *will* just happen that way.
> 
> So what do you think? What's wrong with the picture? Why isn't 
> there a greater priority to work in this direction?

See "The Law of Leaky Abstractions" by Joel Spolsky.

http://www.joelonsoftware.com/articles/LeakyAbstractions.html

As he says, "All non-trivial abstractions, to some degree, are leaky."
GUI abstractions tend to leak badly.  As I write this email in
Thunderbird, my initial impression is that most of the controls on the
screen are pretty standard and could be done with virtually any
toolkit... or are they?  Looking again, the "from" field has both a
place for me to type and some grayed out text that reminds me I'm
posting from a different account; the "to", "cc", and "newsgroup" fields
are not quite combo boxes; the toolbar has pulldown buttons.

So it turns out that Thunderbird is actually tied to a particular
toolkit, and for good reason: GUI development has not stagnated; toolkit
developers continue to invent new, interesting widgets and variations,
leading to better UIs.  Application developers want to take advantage of
those innovations.

Even anydbm is a pretty leaky abstraction.  I recently tested the
behavior of 5 Python dbm implementations when they run out of disk
space.  Most left the database in an inconsistent state, some swallowed
the exception, some segfaulted, and one deadlocked.  If I'm going to
rely on a dbm module, I really need to know what it's going to do when
it hits an exceptional condition.  Thus anydbm seemed like a bad choice.

Shane



From almad at include.cz  Wed May  4 06:29:12 2005
From: almad at include.cz (Almad)
Date: Wed, 04 May 2005 12:29:12 +0200
Subject: sha-2 and sha-512 bindings
Message-ID: <d5a861$1eek$1@news.vol.cz>

Hi, 

is there any python bindings for sha-2 or sha-512? 

Pycrypto seems to have only sha-1 bindings and I can't see any other package
on net...

Thanks, 
-- 
Lukas "Almad" Linhart

[:: http://www.almad.net/ ::]
[:: Humans are too complicated to be described with words. ::]
[:: PGP/GNUPg key: http://www.almad.net/download/pubkey.asc ::]


From anonymousnerd at gmail.com  Fri May 20 12:51:40 2005
From: anonymousnerd at gmail.com (anonymousnerd at gmail.com)
Date: 20 May 2005 09:51:40 -0700
Subject: How come print cannot be assigned to a variable?
In-Reply-To: <mailman.252.1116600465.8733.python-list@python.org>
References: <1116600042.622872.49850@g14g2000cwa.googlegroups.com>
	<mailman.252.1116600465.8733.python-list@python.org>
Message-ID: <1116607900.325703.203200@g44g2000cwa.googlegroups.com>

Thank You Adriano. You were a huge help.

                                                Vaibhav



From elrei69 at yahoo.es  Thu May 12 14:10:38 2005
From: elrei69 at yahoo.es (Ximo)
Date: Thu, 12 May 2005 20:10:38 +0200
Subject: How "return" no return ?
References: <3ehaurF34ak0U1@individual.net><mailman.472.1115911936.29826.python-list@python.org><3ehc5tF35eo3U1@individual.net>
	<mailman.484.1115919541.29826.python-list@python.org>
Message-ID: <3ehkh2F366o4U1@individual.net>

I am doing my own interpreter with the Python languaje.

Do you understand me?



"Fredrik Lundh" <fredrik at pythonware.com> escribi? en el mensaje 
news:mailman.484.1115919541.29826.python-list at python.org...
> "Ximo" wrote:
>
>> I am doing a interpret of lines and it show me a prompt, and I want if I
>> write a declaration as "int a" my progrtam return de prompt and nothing
>> more, for exemple:
>>
>> >>> 2+2
>> 4
>> >>> int a
>> >>>
>>
>> Then I'm finding that de function which execute "int a" return me 
>> nothing,
>> and no
>>
>> >>> int a
>> None
>> >>>
>
> what Python version are you using?  here's what a normal Python
> interpreter is supposed to do with your example:
>
>>>> 2+2
> 4
>>>> int a
>  File "<stdin>", line 1
>    int a
>        ^
> SyntaxError: invalid syntax
>>>>
>
> </F>
>
>
> 




From fuzzyman at gmail.com  Mon May  9 07:52:15 2005
From: fuzzyman at gmail.com (Fuzzyman)
Date: 9 May 2005 04:52:15 -0700
Subject: path(file)
In-Reply-To: <mailman.145.1115482035.29826.python-list@python.org>
References: <mailman.145.1115482035.29826.python-list@python.org>
Message-ID: <1115639535.623120.206110@z14g2000cwz.googlegroups.com>

Can you give us an example of the way the 'list of files' is stored in.

import os
print os.path.abspath(filename)

Will do *something*... so long as 'filename' contains a path relative
to the current working directory. What you want is undoubtably in the
os and os.path modules.

Regards,

Fuzzy
http://www.voidspace.org.uk/python



From miniaustin at gmail.com  Fri May 13 02:57:26 2005
From: miniaustin at gmail.com (Austin)
Date: Fri, 13 May 2005 14:57:26 +0800
Subject: wxTimer problem
Message-ID: <d61jak$7ig$1@netnews.hinet.net>

I wrote a GUI program on windows. (python & wxPython)
One function is to refresh the data from the COM Object continously.
In the beginning, I used the thread.start_new_thread(xxx,())
But no matter how i try, it will cause the win32com error.

After that, i use the wx.Timer to do the refresh function.
It works fine, but i find one problem.
I think timer should be independant, just like thread, but wxTimer doesn't.

1. Does python have timer function( not included by thread)?
2. About the wxTimer, does any parameter to let it be independent? 




From mwm at mired.org  Sat May 28 14:47:56 2005
From: mwm at mired.org (Mike Meyer)
Date: Sat, 28 May 2005 13:47:56 -0500
Subject: write to the same file from multiple processes at the same time?
References: <mailman.175.1117200711.18027.python-list@python.org>
	<7x1x7siy3b.fsf@ruckus.brouhaha.com>
	<LdOdnf5kluybBwrfRVn-2Q@powergate.ca>
	<7xacmgnwvr.fsf@ruckus.brouhaha.com>
	<fcednbqcccHBPQrfRVn-2w@powergate.ca>
	<7xwtpkqo2o.fsf@ruckus.brouhaha.com>
Message-ID: <86zmufuqzn.fsf@guru.mired.org>

Paul Rubin <http://phr.cx at NOSPAM.invalid> writes:
> Really, I think the Python library is somewhat lacking in not
> providing a simple, unified interface for doing stuff like this.

It's got one. Well, three, actually.

The syslog module solves the problem quite nicely, but only works on
Unix. If the OP is working on Unix systems, that may be a good
solution.

The logging module has a SysLogHandler that talks to syslog on
Unix. It also has an NTEventLogHandler for use on NT. I'm not familiar
with NT's event log, but I presume it has the same kind of
functionality as Unix's syslog facility.

      <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From modelnine at ceosg.de  Thu May 19 07:56:57 2005
From: modelnine at ceosg.de (Heiko Wundram)
Date: Thu, 19 May 2005 13:56:57 +0200
Subject: What's the difference between str and 'hello' ?
In-Reply-To: <ffa7ec1b.0505190127.122b51a8@posting.google.com>
References: <ffa7ec1b.0505190127.122b51a8@posting.google.com>
Message-ID: <200505191357.00140.modelnine@ceosg.de>

Am Donnerstag, 19. Mai 2005 11:27 schrieb hong Yu:
> >>> str.join(a)
>
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
> TypeError: descriptor 'join' requires a 'str' object but received a 'list'
>
> What's the difference between str and 'hello' ?

str.join("",a) <=> "".join(a)
(<=> as in equivalence relation)

HTH!

-- 
--- Heiko.
listening to: Bjork Gu?mundsdottir & Trio - Luktar-Gvendur
  see you at: http://www.stud.mh-hannover.de/~hwundram/wordpress/
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From scharan20 at gmail.com  Thu May 26 04:12:39 2005
From: scharan20 at gmail.com (Sriek)
Date: 26 May 2005 01:12:39 -0700
Subject: __init__() not called automatically
In-Reply-To: <mailman.122.1117088782.18027.python-list@python.org>
References: <1117081917.760603.82610@z14g2000cwz.googlegroups.com>
	<mailman.120.1117082812.18027.python-list@python.org>
	<1117083921.273155.190790@g44g2000cwa.googlegroups.com>
	<mailman.122.1117088782.18027.python-list@python.org>
Message-ID: <1117095159.492859.256270@g44g2000cwa.googlegroups.com>

if i understand C++ right, in c++ you CAN explicitly call the base
constructor ( for eg. if it requires some particular arguements ), but,
the compiler automatically has to call the base class constructor ( see
the rules for constructing an object of the derived classes ).

But, yes, C++ can be too disgusting sometimes. But, i like the C++
design philosophy ( read D & E of C++ ? ), the rasons for various
features are intellgently put inplace.

Correct me if i am wrong about both the paragraphs. ok? T
Thanks



From jjl at pobox.com  Fri May 13 17:25:00 2005
From: jjl at pobox.com (John J. Lee)
Date: 13 May 2005 21:25:00 +0000
Subject: Python Documentation (should be better?)
References: <mailman.389.1115837608.29826.python-list@python.org>
Message-ID: <87mzqykedv.fsf@pobox.com>

"Christopher J. Bottaro" <cjbottaro at alumni.cs.utexas.edu> writes:
[...]

By the way, did you try the .chm?


John


From bokr at oz.net  Thu May 12 17:23:50 2005
From: bokr at oz.net (Bengt Richter)
Date: Thu, 12 May 2005 21:23:50 GMT
Subject: Launch file in Notepad
References: <42835db6$0$1334$5fc3050@dreader2.news.tiscali.nl>
	<mailman.462.1115906101.29826.python-list@python.org>
	<1186phdog83fmf6@corp.supernews.com>
	<42836e72.1345761282@news.oz.net>
	<hv07811hbn06nblj317do4ppmb8grf4oi9@4ax.com>
Message-ID: <4283c8e6.4715820@news.oz.net>

On Thu, 12 May 2005 16:30:36 GMT, Dennis Lee Bieber <wlfraed at ix.netcom.com> wrote:

>On Thu, 12 May 2005 15:14:09 GMT, bokr at oz.net (Bengt Richter) declaimed
>the following in comp.lang.python:
>
>
>> 
>> I don't know why MS used backslashes when unix had a perfectly good path syntax
>> (not to mention drive letter idiocy). Maybe some legal idiocy, wanting to be
>> different to be safe from SCO types?
>>
>	The MS-DOS precursor (and/or CP/M) used "/" to introduce command
>line options. This meant, when subdirectories were introduced, they had
>to come up with a new separator character.
>
Or overcome some NIH and switch to '-' for command line options? ;-)

Regards,
Bengt Richter


From ccurvey at gmail.com  Wed May 11 07:20:03 2005
From: ccurvey at gmail.com (Chris Curvey)
Date: 11 May 2005 04:20:03 -0700
Subject: CGIHTTPServer on Windows?
Message-ID: <1115810403.558127.110920@z14g2000cwz.googlegroups.com>

Hi all,

I'm trying to work around my cgi-driving-IE problem by creating my own
server, but CGIHTTPServer on Windows (python 2.3.5) seems to be having
troubles.  Trying to run a "hello world" CGI gives me:

COMPAQ.ANTIQUES - - [11/May/2005 07:18:50] "GET /cgi-bin/hello.py
HTTP/1.1" 200
-
COMPAQ.ANTIQUES - - [11/May/2005 07:18:50] command: c:\program
files\python235\p
ython.exe -u C:\Documents and Settings\chris\My
Documents\cgi-bin\hello.py ""
COMPAQ.ANTIQUES - - [11/May/2005 07:18:50] 'c:\program' is not
recognized as an
internal or external command,
operable program or batch file.

COMPAQ.ANTIQUES - - [11/May/2005 07:18:50] CGI script exit status 0x1

I tried hacking the source of do_POST to put quotes around the name of
the python executable and the script, but that didn't get me anywhere.
Is there a solution to this, or does this approach require me to use
pathnames without embedded spaces?



From "myname" at example.invalid  Sat May 28 17:42:58 2005
From: "myname" at example.invalid (VK)
Date: Sat, 28 May 2005 23:42:58 +0200
Subject: Getting value of radiobutton trouble
In-Reply-To: <K65me.195$Dq7.187@newssvr11.news.prodigy.com>
References: <3fs17rF9b8edU1@news.dfncis.de>
	<%35me.194$Dq7.159@newssvr11.news.prodigy.com>
	<K65me.195$Dq7.187@newssvr11.news.prodigy.com>
Message-ID: <3fs6vqF9e961U1@news.dfncis.de>

Philippe C. Martin wrote:
> Sorry,
> 
> I still had your code in my clipboard :-) here goes:

So, your code works, but I need, that first window calls another 
separate window. In your programm they stick together.
Reg, VK

> 
> 
> 
> from Tkinter import *
> class GetVariant(Frame):
>      def __init__(self,p):
>          self.root = p
>          self.mainframe = Frame(self.root,bg="yellow")
>          self.mainframe.pack(fill=BOTH,expand=1)
> 
>          self.firstframe = Frame(self.mainframe,bg="red")
>          self.firstframe.pack(side=BOTTOM,expand=1)
> 
> 
>          self.v = StringVar()
>          self.radiobutton = Radiobutton(self.firstframe,text="Variant 1",
> variable=self.v, value="Variant 1")
>          self.radiobutton.pack(side=TOP,anchor=W)
>          self.radiobutton.select()
>          self.radiobutton = Radiobutton(self.firstframe,text="Variant 2",
> variable=self.v, value="Variant 2")
>          self.radiobutton.pack(side=TOP,anchor=W)
>          self.radiobutton = Radiobutton(self.firstframe,text="Variant 3",
> variable=self.v, value="Variant 3")
>          self.radiobutton.pack(side=TOP,anchor=W)
> 
> 
> 
>          self.secondframe = Frame(self.mainframe,bg="blue")
>          self.secondframe.pack()
>          self.var = Button(self.secondframe,text="What
> Variant",command=self.call)
>          self.var.pack(expand=1,side=BOTTOM)
> 
> 
> 
>      def call(self):
>          print dir(self.v)
>          self.variant = self.v.get()
>          print 'Input => "%s"' % self.variant
> 
> class OneButton(Frame):
>          def __init__(self):
>              self.root = Tk()
>              Button(self.root,text="click me",command=self.getvar).pack()
>          def getvar(self):
>              print 'HRE'
>              a=GetVariant(self.root)
> 
> d = OneButton()
> d.root.mainloop()
> 
> 
> 
> 
> 
> 
> Philippe C. Martin wrote:
> 
> 
>>Hi,
>>
>>I think your second call to Tk() does it: this works although the look is
>>different:
>>
>>
>>from Tkinter import *
>>class GetVariant:
>>     def __init__(self):
>>         self.root = Tk()
>>         self.mainframe = Frame(self.root,bg="yellow")
>>         self.mainframe.pack(fill=BOTH,expand=1)
>>
>>         self.firstframe = Frame(self.mainframe,bg="red")
>>         self.firstframe.pack(side=BOTTOM,expand=1)
>>
>>         global v
>>         v = StringVar()
>>         self.radiobutton = Radiobutton(self.firstframe,text= "Variant
>>1", variable=v, value="Variant 1")
>>         self.radiobutton.pack(side=TOP,anchor=W)
>>         self.radiobutton.select()
>>         self.radiobutton = Radiobutton(self.firstframe,text= "Variant
>>2", variable=v, value="Variant 2")
>>         self.radiobutton.pack(side=TOP,anchor=W)
>>         self.radiobutton = Radiobutton(self.firstframe,text= "Variant
>>3", variable=v, value="Variant 3")
>>         self.radiobutton.pack(side=TOP,anchor=W)
>>
>>
>>
>>         self.secondframe = Frame(self.mainframe,bg="blue")
>>         self.secondframe.pack()
>>         self.var = Button(self.secondframe,text="What
>>Variant",command=self.call)
>>         self.var.pack(expand=1,side=BOTTOM)
>>
>>
>>
>>     def call(self):
>>         self.variant = v.get()
>>         print 'Input => "%s"' % self.variant
>>
>>class OneButton:
>>         def __init__(self):
>>             self.root = Tk()
>>             Button(self.root,text="click me",command=self.getvar).pack()
>>         def getvar(self):
>>             a=GetVariant()
>>
>>d = OneButton()
>>d.root.mainloop()
>>
>>
>>
>>
>>VK wrote:
>>
>>
>>>Hi!
>>>What I'm missing in following code? Cannot get the values of
>>>radiobuttons. Starting only one class (GetVariant), it works. When I put
>>>two classes together, it doesn't.
>>>Regards, VK
>>>
>>>from Tkinter import *
>>>class GetVariant:
>>>     def __init__(self):
>>>         self.root = Tk()
>>>         self.mainframe = Frame(self.root,bg="yellow")
>>>         self.mainframe.pack(fill=BOTH,expand=1)
>>>
>>>         self.firstframe = Frame(self.mainframe,bg="red")
>>>         self.firstframe.pack(side=BOTTOM,expand=1)
>>>
>>>         global v
>>>         v = StringVar()
>>>         self.radiobutton = Radiobutton(self.firstframe,text= "Variant
>>>1", variable=v, value="Variant 1")
>>>         self.radiobutton.pack(side=TOP,anchor=W)
>>>         self.radiobutton.select()
>>>         self.radiobutton = Radiobutton(self.firstframe,text= "Variant
>>>2", variable=v, value="Variant 2")
>>>         self.radiobutton.pack(side=TOP,anchor=W)
>>>         self.radiobutton = Radiobutton(self.firstframe,text= "Variant
>>>3", variable=v, value="Variant 3")
>>>         self.radiobutton.pack(side=TOP,anchor=W)
>>>
>>>
>>>
>>>         self.secondframe = Frame(self.mainframe,bg="blue")
>>>         self.secondframe.pack()
>>>         self.var = Button(self.secondframe,text="What
>>>Variant",command=self.call)
>>>         self.var.pack(expand=1,side=BOTTOM)
>>>
>>>
>>>
>>>     def call(self):
>>>         self.variant = v.get()
>>>         print 'Input => "%s"' % self.variant
>>>
>>>class OneButton:
>>>         def __init__(self):
>>>             self.root = Tk()
>>>             Button(self.root,text="click me",command=self.getvar).pack()
>>>         def getvar(self):
>>>             a=GetVariant()
>>>
>>>d = OneButton()
>>>d.root.mainloop()
> 
> 


From onurb at xiludom.gro  Mon May 16 11:36:35 2005
From: onurb at xiludom.gro (bruno modulix)
Date: Mon, 16 May 2005 17:36:35 +0200
Subject: Importing and namespace visibility
In-Reply-To: <1116198993.514542.96350@g44g2000cwa.googlegroups.com>
References: <1116198993.514542.96350@g44g2000cwa.googlegroups.com>
Message-ID: <4288be05$0$22928$636a15ce@news.free.fr>

jean-marc wrote:
> As an application programmer, I'm not well versed in the material
> aspects of computing (memory, cpu, bus and all). My understanding of
> imports in Python is such: the __main__ program is the center piece
> which holds the programs reference: globals, functions, classes,
> modules etc. 

the '__main__' program is in fact just another Python module. What makes 
it the 'main program' is the fact that you pass it to the Python 
interpreter as a 'main program'.

> The objects of this file (functions and classes) are
> directly accessible; 

from within this particular module only.

> 'import suchModule' s objects are attainable
> through the *qualified name* (module.function); the 'from suchModule
> import *' the objects are directly attainable.
 >
Take care, this has other implications too.

(snip)
 >
> BUT, of all this I thought that if you import module1, then module2
> (into __main__), objects from module1 would be available to objects of
> module2 which came (into memory space) after module1 was loaded. This
> does not seem to be the case, 

This is not.

> and module2 requires an 'import module1'

Right. And that's a Good Thing(tm).

> statement in its own file to see this last module's objects.  This is
> not the recursive situation that was a pitfall Fredrik was evoking.
> What am I missing here???

The term 'global' in Python is somewhat misleading. What it really means 
is "global to the current module". Each module (and remember the 'main 
program' is a module too) has it's own namespace.

-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for 
p in 'onurb at xiludom.gro'.split('@')])"


From simon.brunning at gmail.com  Tue May  3 08:19:57 2005
From: simon.brunning at gmail.com (Simon Brunning)
Date: Tue, 3 May 2005 13:19:57 +0100
Subject: Py2Exe security
In-Reply-To: <1115121780.404491.84240@f14g2000cwb.googlegroups.com>
References: <1115121780.404491.84240@f14g2000cwb.googlegroups.com>
Message-ID: <8c7f10c60505030519454b6ba8@mail.gmail.com>

On 3 May 2005 05:03:00 -0700, Terje Johan Abrahamsen <terjeja at gmail.com> wrote:
> We have created some programs in Python that are to be distributed
> around. The programs will be made into .exe files by py2exe. However,
> in the source there are certain webadresses, logins and passwords that
> the programs use, that we would like to keep away from the end users.
> They will use them thru the program, but we would like them not to be
> extracted and used separately for other purposes.

If your program can access these details, then a suficiently
determined attacker can access them too, regardless of what you do.

-- 
Cheers,
Simon B,
simon at brunningonline.net,
http://www.brunningonline.net/simon/blog/


From prabapython at yahoo.co.in  Wed May 11 06:38:35 2005
From: prabapython at yahoo.co.in (praba kar)
Date: Wed, 11 May 2005 11:38:35 +0100 (BST)
Subject: Regarding Mail sending smtplib Module
Message-ID: <20050511103835.82049.qmail@web8406.mail.in.yahoo.com>



Dear All,

     I have doubt regarding mail sending smtplib
module. The below code is I used to send  a mail.

##########################################
import email.Message
import email.Utils
import mimetypes
import os,string

fromAddr="prabahar at enmail.com"
toAddr=
["prabakar1978 at rediffmail.com","praba at enmail.com"]

mainMsg=email.Message.Message()
mainMsg["Date"]=email.Utils.formatdate(localtime=1)
mainMsg["Subject"]="en new contents"
mainMsg["From"]=fromAddr
mainMsg["To"]= string.join(toAddr,",")

## I am sending below message ## here

mainMsg.set_payload("Good to win win\n")

server = smtplib.SMTP('localhost')
server.set_debuglevel(1)
server.sendmail(fromAddr, toAddr, mainMsg.as_string())
server.quit()

######################

This is the output of above send mail program.

Here I want to avoid this line "Received: from unknown
(HELO prabahar.enmail.com)     (59.92.13.47)  by
mailserver with SMTP; 11 May 2005 10:09:11 -0000 " How
can I do this? . Why python give this line? . Mail
sending Module in php will not give this type line.
Here I have another doubt Php mail sending module give
MessageId automatically
but python doesn't set that. why?

output
*******

Return-Path: <prabahar at enmail.com>
Delivered-To: prabakar1978 at rediffmail.com
Received: (qmail 6865 invoked from network); 11 May
2005 10:09:11 -0000
Received: from unknown (HELO prabahar.enmail.com)
(59.92.13.47) by mailserver with SMTP; 11 May 2005
10:09:11 -0000

Received: (dqd 1118 invoked from network); 12 Apr 2005
06:38:59 -0000
Received: from unknown (HELO prabahar.enmail.com)
(127.0.0.1)
by prabahar.enmail.com with SMTP; 12 Apr 2005 06:38:59
-0000
Date: Tue, 12 Apr 2005 03:38:59 -0300
Subject: en new contents
From: prabahar at enmail.com
To: prabakar1978 at rediffmail.com,praba at enmail.com

Good to win win


with regards
Prabahar

________________________________________________________________________
Yahoo! India Matrimony: Find your life partner online
Go to: http://yahoo.shaadi.com/india-matrimony


From gandalf at geochemsource.com  Mon May 23 04:57:36 2005
From: gandalf at geochemsource.com (Laszlo Zsolt Nagy)
Date: Mon, 23 May 2005 10:57:36 +0200
Subject: Manipulating mailboxes
Message-ID: <42919B00.8070703@geochemsource.com>


 Hi All,

I need to create a daemon that sits on a server and forwards some 
e-mails. (Well not only that, it needs to change header information 
before forwarding and also insert messages into a database). The mailbox 
module is fine but I do not see a way to delete/add messages - it is 
ready only. The other possiblity is IMAP4 but it is bad because my 
program should not store passwords for all users. I can only see one 
solution right now:

1. Make a copy of the mailbox
2. Truncate the mailbox
3. Process the messages in the copy and forward the e-mails by sending 
out real e-mails.

But this looks so clumsy. Is there a way to delete/add messages to 
mailboxes of different users, directly?

Thanks,

  Laci 2.0



From tnaran at no-more-virii-please.direct.ca  Wed May 25 01:24:22 2005
From: tnaran at no-more-virii-please.direct.ca (Travers Naran)
Date: Wed, 25 May 2005 05:24:22 GMT
Subject: Counting occurences of words in a list of strings
In-Reply-To: <4293fe18@news.eftel.com>
References: <YxRke.10544$on1.9738@clgrps13> <4293fe18@news.eftel.com>
Message-ID: <a_Tke.10723$on1.7205@clgrps13>

John Machin wrote:
> Are you comparing BMH implemented in Python with str.count() implemented 
> in C?

Tee-hee.  Yes.  I figured out that was the problem pretty quickly and just 
went back to count().

> 1. A pure Python suggestion:
> 
> Presuming there is a character SEP that cannot appear in the keys in 
> your query dictionary, try this:
> 
> SEP = '\n' # for example
> big_string_count = SEP.join(tc.strings).count
> for query_key in self.dict.keys():
>     self.dict[query_key]['count'] += big_string_count(query_key)
> 
> Why do we have += in the above line? Is there anything else being added 
> in by not-shown code? If not, the following would be much more 
> comprehensible, and faster:

There is.  Because the program can loop over mutliple input files, it needs 
to count it across the files.  But that's a minor thing.

> Checking your requirements for "non-overlapping": if you have 'foobar' 
> and 'barzot' in the dictionary, and a string contains 'foobarzot', your 
> code will count 1 for 'foobar' and 1 for 'barzot'. Is that OK?

Exactly.  Let me be more precise: non-overlapping with itself.  I.e., if I 
has "aa", then "aaaa" should count 2.  But foorbar and barzot both coming 
back 1 in your example is exactly the behavoir I want.

> 2. Next, if you don't mind using a C-extension, look at Danny Yoo's 
> ahocorasick module, which will search in parallel for your 3000+ keys.
> 
> http://hkn.eecs.berkeley.edu/~dyoo/python/ahocorasick/
> 
> Under one definition of non-overlapping, you will be able to use one of 
> the findall methods; under the other definition, you will need to use 
> one of the search methods and restart at (matched_position + 1).

Nifty!  Thanks muchly.

> 3. If you want to roll your own, start with Gonzalo Navarro's 
> publications: http://www.dcc.uchile.cl/~gnavarro/subj-multiple.html

I don't suffer from NMH syndrome.  If ahocorasick does the job, or even 
count, I'm OK with that.


From rrr at ronadam.com  Tue May 17 22:12:11 2005
From: rrr at ronadam.com (Ron Adam)
Date: Wed, 18 May 2005 02:12:11 GMT
Subject: Representing ambiguity in datetime?
In-Reply-To: <5hvk81prupnpinq4ucspsikdqns5rmcaf0@4ax.com>
References: <mailman.121.1116368416.8733.python-list@python.org>
	<5hvk81prupnpinq4ucspsikdqns5rmcaf0@4ax.com>
Message-ID: <%vxie.25534$VH2.13093@tornado.tampabay.rr.com>

John Machin wrote:

> On Tue, 17 May 2005 17:38:30 -0500, Terry Hancock
> <hancock at anansispaceworks.com> wrote:
> 
> 
>>What do you do when a date or time is
>>incompletely specified?  ISTM, that as it is, there is no
>>formal way to store this --- you have to guess, and there's
>>no way to indicate that the guess is different from solid
>>information.  As a result, I have sometimes had to abandon
>>datetime, even though it seemed like the logical choice for
>>representing data.
>>
>>E.g. I might have information like "this paper was published
>>in May 1997".  There's no way to write that with datetime,
>>is there?  Even if I just use the "date" object instead of 
>>datetime, I still have to actually specify something like 
>>May 1, 1997 --- fabricating data, which is frequently
>>undesireable (later on, I might find information saying that
>>it was actually published May 23, 1997 and I might want
>>to update the earlier one, or simply evaluate them as 
>>"equal" since they are, to within the precision given --- 
>>for example, I might be trying to decide that two database
>>entries are really duplicate references to the same paper).
>>
>>I know that this is somewhat theoretically stated, but I 
>>have run into to concrete problems along the lines of
>>the above.
>>
>>I'd say this is analogous to how you might use "None"
>>rather than "0" to represent an integer if you don't know
>>it's value (rather than knowing that it is zero).  ISTM, you
>>ought to be able to specify a date as, e.g.:
>>
>>d = datetime.date(2005, 5, None)
>>
>>I realize there might be some complexity with deciding
>>how to handle datestamp math, but as this situation
>>occurs frequently in real life, it seems like it shouldn't
>>be avoided.
>>
>>How do other people deal with this kind of problem?
> 
> 
> Mostly, badly :-(
> 
> Real-life example: due to war-time disruption etc, in some countries
> it is common enough to find that the date of birth of someone born in
> the 1940s is not known precisely. E.g. on the Hong Kong identity card,
> it is possible to find only the year and month of birth, and sometimes
> even only the year. Depending on the purpose, legislation and
> convention will take the first day of the vague period or the last day
> when a calculation is required. Badly == entering into a database the
> "exact" date that was used for the purpose du jour, with no indication
> that the source was vague. Consequently a person can have DOB recorded
> as 1945-01-01 on one database and 1945-12-31 on another.
> 
> Suggested approach in Python (sketch): Don't try to get the datetime
> module to solve the problem. Define a fuzzydate class. Internal
> representation: I'd suggest earliest possible date and latest possible
> date. That way you have valid date instances for doing date
> arithmetic. May have different constructors depending on how the
> incoming vagueness is specified. 
> 
> HTH,
> John


This is a very common problem in genealogy research as well as other 
sciences that deal with history, such as geology, geography, and archeology.

I agree that some standard way of dealing with fuzzy dates would be a 
good thing.  I think looking at how others do it would be the way to 
start...

A google search found the following reference buried in a long reference 
page on mysql.

http://www.dreamlink.net/mysql/manual_Functions.html

> The reason the ranges for the month and day specifiers begin
with zero is that MySQL allows incomplete dates such as
'2004-00-00' to be stored as of MySQL 3.23.


So it seems using 0's for the missing day or month may be how to do it.

Cheers,
_Ron




From mcassiano at manord.com  Thu May 12 08:28:42 2005
From: mcassiano at manord.com (Cassiano, Marco)
Date: Thu, 12 May 2005 14:28:42 +0200
Subject: Sleepycat Bsdbd 4.3.27 and Python 2.4.1
Message-ID: <52DC70C1C1575C418CB033523A29CF1403AD5395@exchange2000.manord.com>

Hi all,
 
I've just compiled Python 2.4.1 on a linux box (RHEL 3AS) after having
installed Berkeley DB 4.3.27 from sleepycat Software.
During the configure/build process python correctly found the BSBDB
library.
 
I then installed the rest of my environment which is correctly working
with Python 2.3
 
When I try to run one of my procedures I get the following error trying
to opening a common shelve file : 
 
 
Mod_python error: "PythonHandler mod_python.publisher"
 
Traceback (most recent call last):
 
  File "/usr/local/lib/python2.4/site-packages/mod_python/apache.py",
line 299, in HandlerDispatch
    result = object(req)
 
  File "/usr/local/lib/python2.4/site-packages/mod_python/publisher.py",
line 136, in handler
    result = util.apply_fs_data(object, req.form, req=req)
 
  File "/usr/local/lib/python2.4/site-packages/mod_python/util.py", line
361, in apply_fs_data
    return object(**args)
 
  File "/discoe/script/cgi/cgi-mpy/cgi-mpy_login.py", line 116, in
controlla_login
    dbase = shelve.open(file_AUTENTICAZIONE)  #apre shelve
 
  File "/usr/local/lib/python2.4/shelve.py", line 231, in open
    return DbfilenameShelf(filename, flag, protocol, writeback, binary)
 
  File "/usr/local/lib/python2.4/shelve.py", line 212, in __init__
    Shelf.__init__(self, anydbm.open(filename, flag), protocol,
writeback, binary)
 
  File "/usr/local/lib/python2.4/anydbm.py", line 83, in open
    return mod.open(file, flag, mode)
 
  File "/usr/local/lib/python2.4/dbhash.py", line 16, in open
    return bsddb.hashopen(file, flag, mode)
 
  File "/usr/local/lib/python2.4/bsddb/__init__.py", line 285, in
hashopen
    e = _openDBEnv()
 
  File "/usr/local/lib/python2.4/bsddb/__init__.py", line 339, in
_openDBEnv
    e.open('.', db.DB_PRIVATE | db.DB_CREATE | db.DB_THREAD |
db.DB_INIT_LOCK | db.DB_INIT_MPOOL)
 

DBError: (156471272, 'Unknown error 156471272')

 

 

Any hint or suggestion is welcom

Thnx

 

Marco Cassiano

 

 

 

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From Bernd.Nawothnig at t-online.de  Sat May 14 13:23:56 2005
From: Bernd.Nawothnig at t-online.de (Bernd Nawothnig)
Date: Sat, 14 May 2005 19:23:56 +0200
Subject: A new to Python question
References: <1116088663.428932.130860@g43g2000cwa.googlegroups.com>
	<Dkqhe.1732$aM4.440@newssvr11.news.prodigy.com>
Message-ID: <cqohl2-pj5.ln1@Bernd.Nawothnig.dialin.t-online.de>

On 2005-05-14, Philippe C. Martin wrote:

> You're thinking you're passing the arguments as reference

That is the way Fortran handles them:

[...]

>> Right now I'm taking a simple program I wrote in Fortran




Bernd

-- 
Those who desire to give up freedom in order to gain security,
will not have, nor do they deserve, either one. [T. Jefferson]


From peter at engcorp.com  Wed May 11 19:23:52 2005
From: peter at engcorp.com (Peter Hansen)
Date: Wed, 11 May 2005 19:23:52 -0400
Subject: windows directories for curr user
In-Reply-To: <1115842685.555385.65010@g47g2000cwa.googlegroups.com>
References: <mailman.330.1115797673.29826.python-list@python.org>
	<1115842685.555385.65010@g47g2000cwa.googlegroups.com>
Message-ID: <r8ydnQ2zdvPMCR_fRVn-gg@powergate.ca>

flamesrock wrote:
> Thanks for the code Tom.
> 
> Unforunately, I get the following error message when trying to import
> win32com in idle:

Have you installed the pywin32 package?  If not, see Google...


From jepler at unpythonic.net  Fri May 13 09:01:18 2005
From: jepler at unpythonic.net (Jeff Epler)
Date: Fri, 13 May 2005 08:01:18 -0500
Subject: How "return" no return ?
In-Reply-To: <3ehc5tF35eo3U1@individual.net>
References: <3ehaurF34ak0U1@individual.net>
	<mailman.472.1115911936.29826.python-list@python.org>
	<3ehc5tF35eo3U1@individual.net>
Message-ID: <20050513130115.GC12225@unpythonic.net>

At the interactive prompt, a result is printed when both these things
are true:
    * The entered code is an expression, not any other kind of statement
    * The result of the expression is not 'None'
If an expression occurs, information about it will be printed instead.

So the interpreter won't print a result for
    >>> a = 3            # because it's an assignment statement
    >>> def f(): return  # because it's a 'def' statement
    >>> None             # because the result of the expression is 'None'
    >>> f()              # because the result of the expression is 'None'

Your example
    >>> int a
is not Python, but if it was it would probably be a non-expression
statement, and thus never print a result in the interpreter.

Jeff
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From wazaah at hotmail.com  Sun May  1 07:16:59 2005
From: wazaah at hotmail.com (Nathan)
Date: Sun, 1 May 2005 21:16:59 +1000
Subject: tkMessageBox dialog help
Message-ID: <1179elj56ralk70@news.supernews.com>

Hi,

I've been testing the standard dialog boxes in tkMessageBox under IDLE.
If I type for example, tkMessageBox.askyesno('test', 'test'), the dialog box 
comes up fine but another window also appears. I'm guessing this is the 
parent window of the message box. If I click on either of the yes/no 
buttons, i get a True/False on the std out and the dialog box closes but the 
parent window remains and seems to hang. This is on WinXP by the way. Is 
this normal behaviour? How do I get the dialog box appearing without the 
parent window or is this not possible?

Thanks,
Nathan. 




From rschroev_nospam_ml at fastmail.fm  Thu May 12 03:39:41 2005
From: rschroev_nospam_ml at fastmail.fm (Roel Schroeven)
Date: Thu, 12 May 2005 07:39:41 GMT
Subject: reg mail sending without smtp module
In-Reply-To: <mailman.429.1115873514.29826.python-list@python.org>
References: <mailman.429.1115873514.29826.python-list@python.org>
Message-ID: <1LDge.88601$zf.5398554@phobos.telenet-ops.be>

praba kar wrote:

> --- Tim Williams <listserver at tdw.net> wrote:
>>Why don't you want to use smtplib ?
> 
> In Php we can build a Mail Message by
> Mail_mime class and send this message by
> Mail::Factory's class send Method. Here Php
> doesn't use any smtp modules. Like that
> In Python I used email.Message class to
> build Mail Message and Now I am searching
> modules to send this message as mail.

You can still use smtplib:

msg = email.Message()
...
smtp = smtplib.SMTP(...)
smtp.sendmail(from, to, msg.as_string())

-- 
If I have been able to see further, it was only because I stood
on the shoulders of giants.  -- Isaac Newton

Roel Schroeven


From fredrik at pythonware.com  Fri May  6 19:06:31 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Sat, 7 May 2005 01:06:31 +0200
Subject: Reference to self not passed to member function
References: <200505061533.02116.jstroud@mbi.ucla.edu>
Message-ID: <d5gssr$6g5$1@sea.gmane.org>

James Stroud wrote:

> I did this:
>
> py> class bob(object):
> ...   def __init__(self,**kwargs):
> ...     for fname,func in kwargs.items():
> ...       setattr(self, fname, lambda *args : func(*args))
> ...
> py> def doit():
> ...   print "wuzzup?"
> ...
> py> abob = bob(doit=doit)
> py>
> py> abob.doit()
> wuzzup?
>
> Much to my surprise, this works fine.

why is that surprising?  "doit" is a callable, you wrap it in another
callable, and then you store it in an attribute.

that's no different from storing a integer as an attribute, and it
sure doesn't turn your callable into an instance method.

> 1. What exactly is going on?

see above.

> 2. How can I get ref to self passed to doit() if I want it to?

try using this bob instead:

    import new

    class bob(object):
        def __init__(self, **kwargs):
            for fname, func in kwargs.items():
                setattr(self, fname, new.instancemethod(func, self, bob))

</F>





From discipulus at gmail.com  Mon May 23 13:51:47 2005
From: discipulus at gmail.com (Discipulus)
Date: 23 May 2005 10:51:47 -0700
Subject: MUD Client and Python Plugin Framework
Message-ID: <1116870707.802985.58190@g14g2000cwa.googlegroups.com>

Hey,
I'm contemplating starting a MUD client in Python, and I would like to
make it so that people can write their own plugins, but I need ideas on
the framework. Any suggestions?



From simon at arrowtheory.com  Sun May  1 22:57:54 2005
From: simon at arrowtheory.com (simon at arrowtheory.com)
Date: 1 May 2005 19:57:54 -0700
Subject: epydoc and latex math
Message-ID: <1115002674.401016.251510@o13g2000cwo.googlegroups.com>

Hi,

We have a requirement for latex math (eg. $\sum_i x_i$) in our
documentation,
and i'm looking at patching epydoc to handle this. We have been using
the python doc system
(also used by numarray), with a script to rip docstrings into the
required latex.
However, this method is getting out of hand, and epydoc looks like a
great replacement tool.

I see nltk and twisted use epydoc, but the project itself seems to be
quiet at the moment.

Also, I have been subscribed to doc-sig for a while now, but I am
utterly confused
as to what they are up to.

bye,

Simon.


--
Simon Burton, B.Sc.
Licensed PO Box 8066
ANU Canberra 2601
Australia
Ph. 61 02 6249 6940
http://arrowtheory.com



From vincent at visualtrans.de  Thu May 26 02:45:56 2005
From: vincent at visualtrans.de (vincent wehren)
Date: Thu, 26 May 2005 08:45:56 +0200
Subject: Problem redirecting stdin on Windows
References: <op.src1o0py6yt6e7@news.cisco.com>
Message-ID: <d73rb4$a24$1@news4.zwoll1.ov.home.nl>

"aurora" <aurora00 at gmail.com> schrieb im Newsbeitrag 
news:op.src1o0py6yt6e7 at news.cisco.com...
| On Windows (XP) with win32 extension installed, a Python script can be
| launched from the command line directly since the .py extension is
| associated with python. However it fails if the stdin is piped or
| redirected.
|
| Assume there is an echo.py that read from stdin and echo the input.
|
|
|
| Launching from command line directly, this echos input from keyboard:
|
|   echo.py
|
|
|
| But it causes an error if the stdin is redirected
|
|   echo.py <textfile
|
|
|   ...
|       for line in fp:
|   IOError: [Errno 9] Bad file descriptor
|
|
|
| However it works as expected if launched via Python.exe
|
|   c:\Python24\python.exe echo.py <textfile
|
|
|
| Why is the second option fails? It makes many script lot less functional.

See:
http://mail.python.org/pipermail/python-bugs-list/2004-August/024920.html

--
Vincent Wehren




From tjreedy at udel.edu  Wed May 25 15:19:56 2005
From: tjreedy at udel.edu (Terry Reedy)
Date: Wed, 25 May 2005 15:19:56 -0400
Subject: Using properties
References: <1117029966.799908.183830@f14g2000cwb.googlegroups.com><42949ca2$0$6501$636a15ce@news.free.fr>
	<1117041254.820429.306500@g49g2000cwa.googlegroups.com>
Message-ID: <d72j1b$vrm$1@sea.gmane.org>


<tkpmep at hotmail.com> wrote in message 
news:1117041254.820429.306500 at g49g2000cwa.googlegroups.com...
> Thanks for the help. I now understand it better. As Bruno points out, I
> really don't need a property in this case, as my attribute is public,
> and I will remove it.

As much to the point is that your name attribute is static in the sense of 
being a fixed object between settings.  Should you later want to make it 
dynamic (or perhaps lazy) in the sense of being computed on demand, then 
you can do so with property() *without* changing the external interface to 
the class.

A third reason for property() is when you want to do something in addition 
to the access, such as reporting the access to something else.

Terry J. Reedy





From python-url at phaseit.net  Tue May 24 11:19:29 2005
From: python-url at phaseit.net (Simon Brunning)
Date: Tue, 24 May 2005 15:19:29 +0000
Subject: Dr. Dobb's Python-URL! - weekly Python news and links (May 24)
Message-ID: <mailman.90.1117029677.18027.python-announce-list@python.org>

QOTW: "If you're sick of answering newbie questions, and don't think you
can do so politely, for the sake of the community, DON'T!  You're not that
necessary." - Joal Heagney

"Who controls the runtime also controls the language." - Kay Schluehr

    
    Jake tells us about the \r control character, which allows one to
    refresh a terminal line. Many people help him to use it from Python,
    and Fredrik warns him that it might well not work from an IDE:
        http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/50cffbb6eb03cc4
        
    John Reese asks whether he needs to explicitly close file objects,
    or whether reference counting will take care of it for him. Martin
    v. L?wis shows a scenario that demonstrates that ref counting won't
    always close files when you think it will:
        http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/7eba2d6efd271707
        
    Simon Percivall and Jp Calderone show Michael Chermside how to
    process subprocess module output a line at a time:
        http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/df6854ec10c6d508
        
    WSGI Explorations with Python - Mike Orr investigates WSGI and Paste:
        http://rex.kicks-ass.net/python/wsgi-explorations.html
        
    Len, an "old time Cobol programmer", asks for some advice on storing data:
        http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/c20623a77b22c456
        
    Dustin is refactoring some unpythonic code that uses a very nasty
    import mechanism, but now he's having trouble with circular imports:
        http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/8eae5075b9973a2b
        
    A Matter Of Questions - Ben Last tells us how he's using Python for
    data cleansing, amongst other things, while building a Playstation
    Music Quiz:
        http://www.livejournal.com/users/benlast/24719.html
        
    William Park wants to test how similar two strings are. This is
    more complicated than it sounds...
        http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/4aa08f075d05eb48

    Create an ODBC data source in the fly with Python:
        http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/414879
        
    Paul Rubin investigates how the super() function works with
    multiple inheritance. A number of people clear things up for him.
        http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/57cdcc73f8747091
        
    Notable releases:
        pysqlite 2.0.2
            http://pysqlite.org/
        PyPy 0.6 (!)
            http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/8e4a74dfb90c8bf4
        

========================================================================
Everything Python-related you want is probably one or two clicks away in
these pages:

    Python.org's Python Language Website is the traditional
    center of Pythonia
        http://www.python.org
    Notice especially the master FAQ
        http://www.python.org/doc/FAQ.html

    PythonWare complements the digest you're reading with the
    marvelous daily python url
         http://www.pythonware.com/daily  
    Mygale is a news-gathering webcrawler that specializes in (new)
    World-Wide Web articles related to Python.
         http://www.awaretek.com/nowak/mygale.html 
    While cosmetically similar, Mygale and the Daily Python-URL
    are utterly different in their technologies and generally in
    their results.

    For far, FAR more Python reading than any one mind should
    absorb, much of it quite interesting, several pages index
    much of the universe of Pybloggers.
	http://lowlife.jp/cgi-bin/moin.cgi/PythonProgrammersWeblog
        http://www.planetpython.org/
        http://mechanicalcat.net/pyblagg.html

    comp.lang.python.announce announces new Python software.  Be
    sure to scan this newsgroup weekly.
        http://groups.google.com/groups?oi=djq&as_ugroup=comp.lang.python.announce

    Steve Bethard, Tim Lesher, and Tony Meyer continue the marvelous
    tradition early borne by Andrew Kuchling, Michael Hudson and Brett
    Cannon of intelligently summarizing action on the python-dev mailing
    list once every other week.
	http://www.python.org/dev/summary/

    The Python Package Index catalogues packages.
        http://www.python.org/pypi/

    The somewhat older Vaults of Parnassus ambitiously collects references
    to all sorts of Python resources.
        http://www.vex.net/~x/parnassus/   

    Much of Python's real work takes place on Special-Interest Group
    mailing lists
        http://www.python.org/sigs/

    The Python Business Forum "further[s] the interests of companies
    that base their business on ... Python."
	http://www.python-in-business.org

    Python Success Stories--from air-traffic control to on-line
    match-making--can inspire you or decision-makers to whom you're
    subject with a vision of what the language makes practical.
        http://www.pythonology.com/success

    The Python Software Foundation (PSF) has replaced the Python
    Consortium as an independent nexus of activity.  It has official
    responsibility for Python's development and maintenance. 
        http://www.python.org/psf/
    Among the ways you can support PSF is with a donation.
        http://www.python.org/psf/donate.html

    Kurt B. Kaiser publishes a weekly report on faults and patches.
        http://www.google.com/groups?as_usubject=weekly%20python%20patch
       
    Cetus collects Python hyperlinks.
        http://www.cetus-links.org/oo_python.html

    Python FAQTS
        http://python.faqts.com/

    The Cookbook is a collaborative effort to capture useful and
    interesting recipes.
	http://aspn.activestate.com/ASPN/Cookbook/Python

    Among several Python-oriented RSS/RDF feeds available are
	http://www.python.org/channews.rdf
	http://bootleg-rss.g-blog.net/pythonware_com_daily.pcgi
	http://python.de/backend.php
    For more, see
	http://www.syndic8.com/feedlist.php?ShowMatch=python&ShowStatus=all
    The old Python "To-Do List" now lives principally in a
    SourceForge reincarnation.
        http://sourceforge.net/tracker/?atid=355470&group_id=5470&func=browse
        http://python.sourceforge.net/peps/pep-0042.html
     
    The online Python Journal is posted at pythonjournal.cognizor.com.
    editor at pythonjournal.com and editor at pythonjournal.cognizor.com
    welcome submission of material that helps people's understanding
    of Python use, and offer Web presentation of your work.

    del.icio.us presents an intriguing approach to reference commentary.
    It already aggregates quite a bit of Python intelligence.
        http://del.icio.us/tag/python

    *Py: the Journal of the Python Language*
        http://www.pyzine.com

    Archive probing tricks of the trade:
        http://groups.google.com/groups?oi=djq&as_ugroup=comp.lang.python&num=100
        http://groups.google.com/groups?meta=site%3Dgroups%26group%3Dcomp.lang.python.*

Previous - (U)se the (R)esource, (L)uke! - messages are listed here:
  http://www.ddj.com/topics/pythonurl/ (requires subscription)
  http://groups-beta.google.com/groups?q=python-url+group:comp.lang.python*&start=0&scoring=d&
  http://purl.org/thecliff/python/url.html (dormant)
or
  http://groups.google.com/groups?oi=djq&as_q=+Python-URL!&as_ugroup=comp.lang.python


Suggestions/corrections for next week's posting are always welcome.
E-mail to <Python-URL at phaseit.net> should get through.

To receive a new issue of this posting in e-mail each Monday morning
(approximately), ask <claird at phaseit.net> to subscribe.  Mention
"Python-URL!".


-- The Python-URL! Team--

Dr. Dobb's Journal (http://www.ddj.com) is pleased to participate in and
sponsor the "Python-URL!" project.




From jstroud at mbi.ucla.edu  Thu May  5 13:37:23 2005
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Thu, 5 May 2005 10:37:23 -0700
Subject: dictionary comparison
In-Reply-To: <1115313648.259509.80170@z14g2000cwz.googlegroups.com>
References: <1115306371.818120.150340@f14g2000cwb.googlegroups.com>
	<1115312393.514506.77600@z14g2000cwz.googlegroups.com>
	<1115313648.259509.80170@z14g2000cwz.googlegroups.com>
Message-ID: <200505051037.23715.jstroud@mbi.ucla.edu>

On Thursday 05 May 2005 10:20 am, so sayeth rickle:
> Bill and Jordan, thank you both kindly.  I'm not too well versed in
> functions in python and that's exactly what I needed.  I could see I
> was doing something wrong in my original attempt, but I didn't know how
> to correct it.
>
> It's working like a charm now, thank you both very much.
> -Rick

I thought I'd throw this in to show some things in python that make such comparisons very easy to write and also to recommend to use the patch as key and version as value in the dict.:

Note that the meat of the code is really about 4 lines because of (module) sets and list comprehension. Everything else is window dressing.

James

===================================

# /usr/bin/env python

from sets import Set

# pretending these stripped from file
recc_ary = ["117000-05", "116272-03", "116276-01", "116278-01", "116378-02", "116455-01", "116602-01", "116606-01"]
serv_ary = ["117000-01", "116272-02", "116272-01", "116602-02"]


# use patch as value and version as key
recc_dct = dict([x.split("-") for x in recc_ary])
serv_dct = dict([x.split("-") for x in serv_ary])

# use Set to see if patches overlap
overlap = Set(recc_dct.keys()).intersection(serv_dct.keys())

# find differences (change comparison operator to <,>,<=,>=, etc.)
diffs = [patch for patch in overlap if recc_dct[patch] != serv_dct[patch]]

# print a pretty report
for patch in diffs:
  print "reccomended patch for %s (%s) is not server patch (%s)" % \
             (patch, recc_dct[patch], serv_dct[patch])


-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From steve at REMOVETHIScyber.com.au  Sun May 29 08:23:42 2005
From: steve at REMOVETHIScyber.com.au (Steven D'Aprano)
Date: Sun, 29 May 2005 22:23:42 +1000
Subject: Software licenses and releasing Python programs for review
References: <1117245014.218831.317750@g14g2000cwa.googlegroups.com>
	<mailman.216.1117291885.18027.python-list@python.org>
	<1117324124.350474.136600@g14g2000cwa.googlegroups.com>
Message-ID: <pan.2005.05.29.12.23.39.107067@REMOVETHIScyber.com.au>

On Sat, 28 May 2005 16:48:44 -0700, poisondart wrote:

> The reason why I need people to review my code and also the ideas
> behind the code is mostly for academic interest...but not necessarily
> reserved to an academic audience...which is why I don't want people to
> make profit from it. It uses ideas from a language--which would be
> ridiculous (to me) for anybody to make profit from selling the
> mechanics of a natural language.

Let me toss some scenarios out there for you to think about.

You write your code, and distribute it for free. Very generous of you. I
publish for profit a computer magazine which includes a CD containing
software. I would like to include your code. Can I?

My colleague Betty compiles collections of software, tests them, weeds
out the buggy and useless programs, documents the ones that remain, and
sells the collection for profit. She would like to include your code on
her CD. Can she?

My competitor Barney tries to start a business selling your code for
profit. How long do you think he will stay in business trying to sell
what you are making available for free on your website?

My neighbour Bobby creates a game which he sells for profit. This game
includes a natural language engine allowing the game characters to
(almost) understand real language. He would like to use your code to do
this. Can he?

My business partner Billy wants to sell servers for profit. On this
server, he wants to include a collection of software for added value. He
would like to include your software. Can he?



Regards,



-- 
Steven



From qhfgva at gmail.com  Fri May 20 10:38:18 2005
From: qhfgva at gmail.com (qhfgva at gmail.com)
Date: 20 May 2005 07:38:18 -0700
Subject: circular imports
Message-ID: <1116599898.308012.71220@g47g2000cwa.googlegroups.com>

I'm working with a large code base that I'm slowly trying to fix
"unpythonic" features of.

One feature I'm trying to fix is the use of:

# how things are now
sys.path.append('/general/path/aaa/bbb') # lots of lines like this to
specific dirs
import foo

Insead I'd rather have PYTHONPATH already include '/general/path/'
and then just use:

# how I'd like them to be
from aaa.bbb import foo

So I thought I'd just add the necessary __init__.py files and then
things would just work.  Unfortunately trying this exposed a large
number of circular imports which now cause the files to fail to load.

Any ideas why the sys.path.append method has no problem with circular
imports whereas doing thing the "right way" chokes.

thanks,

dustin



From xah at xahlee.org  Sat May 14 06:41:28 2005
From: xah at xahlee.org (Xah Lee)
Date: 14 May 2005 03:41:28 -0700
Subject: function with variable arguments
In-Reply-To: <pan.2005.05.13.12.10.09.18787@internode.on.net>
References: <1115977954.266898.141150@g49g2000cwa.googlegroups.com>
	<pan.2005.05.13.12.10.09.18787@internode.on.net>
Message-ID: <1116067288.070061.286480@g43g2000cwa.googlegroups.com>

Thanks to all for the reply. (i should've known better)

on a related topic,
I think it would be a improvement for the built-in range() so that step
needs not be an integer.
Further, it'd be better to support decreasing range. e.g.

Range( 5, 7, 0.3); # returns [5, 5.3, 5.6, 5.9, 6.2, 6.5, 6.8]
Range( 5, -4, -2); # returns [5,3,1,-1,-3]

 Xah
 xah at xahlee.org
? http://xahlee.org/



From mogmios at mlug.missouri.edu  Tue May 10 23:11:47 2005
From: mogmios at mlug.missouri.edu (Michael)
Date: Tue, 10 May 2005 20:11:47 -0700
Subject: Jabber/XML-RPC lib in Python?
Message-ID: <428177F3.6050201@mlug.missouri.edu>

I was wanting to write a program that lets two machines communicate 
(without user intervention) using XML-RPC over a Jabber network. Does 
anyone know of an existing library suited to that task? I'd like it if I 
didn't need to worry about writing any Jabber or XML-RPC code if I could 
and just worry about the logic of my own program. Any ideas?

--
Michael <mogmios at mlug.missouri.edu>
http://kavlon.org



From bellman at lysator.liu.se  Wed May 11 04:02:06 2005
From: bellman at lysator.liu.se (Thomas Bellman)
Date: Wed, 11 May 2005 08:02:06 +0000 (UTC)
Subject: Trouble saving unicode text to file
References: <1115500976.571232.76100@z14g2000cwz.googlegroups.com>
	<ameq71lt3ohe3o85fsh4m456qgrnj82dfk@4ax.com>
	<d5ppl3$pto$1@news.island.liu.se>
	<a03281t2i1qngf2rnkgsdsq8nvou46nq00@4ax.com>
	<d5rien$c7i$1@news.island.liu.se>
	<42819c66$0$29930$9b622d9e@news.freenet.de>
Message-ID: <d5se5u$gbu$1@news.island.liu.se>

=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?= <martin at v.loewis.de> wrote:

>Thomas Bellman wrote:
>> Fixed-with characters *do* have advantages, even in the external
>> representation.  With fixed-with characters you don't have to
>> parse the entire file or stream in order to read the Nth character;
>> instead you can skip or seek to an octet position that can be
>> calculated directly from N.

> OTOH, encodings that are free of null bytes and ASCII compatible
> also have advantages.

Indeed, indeed.  But that's no reason to choose UTF-16 over UTF-32,
since you don't get those advantages then.

>> And not the least, UTF-32 is *beautiful* compared to UTF-16.

> But ugly compared to UTF-8. Not only does it have the null byte
> and the ASCII incompatibility problem, but it also has the
> endianness problem. So for exchanging Unicode between systems,
> I can see no reason to use anything but UTF-8 (unless, of course,
> one end, or the protocol, already dictates a different encoding).

UTF-8 beats UTF-32 in the practicality department, due to its
compatibility with legacy software, but in my opinion UTF-32 wins
over UTF-8 for shear beauty, even with the endianness problem.

I do wish they had standardized on one single endianness for UTF-32
(and UTF-16), instead of allowing both to exist.  In the mid 1990's
I had to work with files in the TIFF format, which allows both
endianesses.  The specification *requires* you to read both, but it
was a rare sight to find MS Windows software that didn't barf on
big endian TIFF files. :-(  Unix software tended to be better at
reading both endians, but generally wrote in the native format,
meaning big endian on Sun Sparc.  Luckily I could convert files
using tiffcp on our Unix machines, but it was irritating to have to
introduce that extra step.  I fully expect the same problem to
happen with UTF-16 and UTF-32 too.

Anyway, back to UTF, my complaint is that UTF-16 doesn't give you
the advantages of *either* UTF-8, nor UTF-32, so if you have the
choice, UTF-16 is always the worst alternative of those three.  I
see no reason to recommend UTF-16 at all.


-- 
Thomas Bellman,   Lysator Computer Club,   Link?ping University,  Sweden
"God is real, but Jesus is an integer."      !  bellman @ lysator.liu.se
                                             !  Make Love -- Nicht Wahr!


From mf1987 at arcor.de  Fri May 27 11:03:36 2005
From: mf1987 at arcor.de (mmf)
Date: 27 May 2005 08:03:36 -0700
Subject: cpu usage limit
Message-ID: <1117206216.695085.282510@g44g2000cwa.googlegroups.com>

Hi.

My problem:
How can I make sure that a Python process does not use more that 30% of
the CPU at any time. I only want that the process never uses more, but
I don't want the process being killed when it reaches the limit (like
it can be done with resource module).

Can you help me?

Thanks in advance.

Best regards,
Markus



From bh at intevation.de  Thu May 12 12:59:43 2005
From: bh at intevation.de (Bernhard Herzog)
Date: Thu, 12 May 2005 18:59:43 +0200
Subject: Finding startup files
References: <mailman.375.1115827885.29826.python-list@python.org>
	<1115829176.541687.22090@z14g2000cwz.googlegroups.com>
	<1184dj36mp5sdc6@corp.supernews.com>
	<mailman.406.1115849233.29826.python-list@python.org>
	<1186p8e5nkrj095@corp.supernews.com>
Message-ID: <s9zpsvwmlc0.fsf@thetis.intevation.de>

Grant Edwards <grante at visi.com> writes:

> On 2005-05-11, jeff elkins <jeffelkins at earthlink.net> wrote:
>
>> I'm totally new to Python (obvious,yes?) so how might argv[0] fail?
>
> argv[0] contains whatever is put there by the program that
> exec'ed you, and can therefore contain just about anything (or
> nothing).  It may not contain a full path, and your program's
> install directory may not be in your $PATH (it be executed by a
> shortcut or symlink).

That's true for the C-level, i.e. main's argv.  If you're only concerned
about CPython and the program is a script living in a file, then
sys.argv[0] is the filename the python interpreter itself used to read
the script.  Hence it's a valid filename that refers to the script.  It
may be a relative filename, of course, in which case it won't be correct
anymore if the program changes its working directory.

  Bernhard

-- 
Intevation GmbH                                 http://intevation.de/
Skencil                                           http://skencil.org/
Thuban                                  http://thuban.intevation.org/


From jjge at xs4all.nl  Sat May 21 13:59:15 2005
From: jjge at xs4all.nl (jg)
Date: Sat, 21 May 2005 19:59:15 +0200
Subject: Fw: evidence john bokma al jazeera connection ?
References: <1T87IN1838493.4652546296@anonymous.poster>
Message-ID: <428f76f3$0$64528$e4fe514c@news.xs4all.nl>

William Baker wrote:

> 
> 
> 
>    please add forward to alt.security.terrorism if information
> 
>     p.p.s.  "john bokma" shows long list in message boards, just in last
> month.  lots of information to netherlands where muslem militants
> are.  could some be coded cryption to aljazeera, so messages are in
> secret for the terror network?

Do not forget his alter egos: Waldo Centini, Jerry Harper, Els... ;-)

-- 
g


From sxanth at ceid.upatras.gr  Wed May 25 20:12:54 2005
From: sxanth at ceid.upatras.gr (Stelios Xanthakis)
Date: Thu, 26 May 2005 03:12:54 +0300
Subject: pyvm -- faster python
In-Reply-To: <d71lsq$l2q$1@nntp0.reith.bbc.co.uk>
References: <mailman.164.1115548611.29826.python-list@python.org>
	<d71lsq$l2q$1@nntp0.reith.bbc.co.uk>
Message-ID: <42951486.2090103@ceid.upatras.gr>

Hi Michael

[...]
> 
> Releasing open source means that people *may* fix their own bugs, or
> abandon the code.
[...]

I agree with all the points made.

Moreover let me add that "code is one expression of a set of good
ideas", and ideas want to be free!  ;)

I've decided to release the source code of pyvm as soon as it's ready.

Right now *it doesn't* make much sense to give the source because it is
still at an early development stage.  Even if I did and people sent
patches they wouldn't apply because I still make big changes to the
architecture of it.  I'd like to keep it in this status where I can
modify the structure of the program until it becomes really
developer-friendly.  And IMO it doesn't make sense to release incomplete
open source projects: either give something that's good and people can
happily hack, or don't do it at all.  Giving out the source of an
unstable project will most likely harm it (see CherryOS incidents).

The bottomline is that I estimate that pyvm will be ready within
the summer.


Thanks,

Stelios


From Serge.Orlov at gmail.com  Tue May 17 12:52:23 2005
From: Serge.Orlov at gmail.com (Serge Orlov)
Date: 17 May 2005 09:52:23 -0700
Subject: Type question
References: <1116345629.908618.165300@o13g2000cwo.googlegroups.com>
Message-ID: <1116348743.742074.152780@g44g2000cwa.googlegroups.com>

nitrogen... at web.de wrote:
> Hello,
>
> is this call assumed to be True in any case?
>
> result = type(SomeClass) is SomeClass
>
> I've written a proxy class which shadows a real object. If you call
> type(proxyobj) it returns the type of the proxyobject and not the
type
> of the shadowed object. Example:
>
> p = proxy(shadowobj())
> result1 = type(p) is shadowobj     # will return False
> result2 = isinstance(p, shadowobj)   # will return True
>
> So the first call compares the id()s of both types, while the second
> calll seems to work different.
> I've tried to use a proxy metaclass that creates new objects with the
> name 'shadowobj'. So
>
> print type(p)
> print type(shadowobj())
>
> will look exactly the same.

isinstance is not a law. It's just a convention. You don't
actually need to implement it. Consider PEP 246, I believe,
it is the right way to do what you want to do.
isinstance and metaclasses are not.

Instead of writing
if not isinstance(obj, class):
    report error

ask your users to write
obj = adapt(obj, Interface)

instead of dispatch code like
if isinstance(obj, thisclass):
    do this
elif isinstance(obj, thatclass):
    do that
else:
    report error

ask the users to write:
if kind(obj) is ThisKind:
    do this
elif kind(obj) is ThatKind:
    do that
else:
    report error

where kind can be defined as
def kind(obj):
    return getattr(obj, 'kind', None)

  Serge.



From Serge.Orlov at gmail.com  Tue May 17 02:51:51 2005
From: Serge.Orlov at gmail.com (Serge.Orlov at gmail.com)
Date: 16 May 2005 23:51:51 -0700
Subject: Anyway to designating the encoding of the "source" for compile?
In-Reply-To: <1116287070.202497.16340@g44g2000cwa.googlegroups.com>
References: <1116087091.856022.155340@z14g2000cwz.googlegroups.com>
	<1116263722.499345.73260@g43g2000cwa.googlegroups.com>
	<sg2i8119lqdrlu0sb6atgrj88cgjrda6f0@4ax.com>
	<1116286039.267037.91500@o13g2000cwo.googlegroups.com>
	<1116287070.202497.16340@g44g2000cwa.googlegroups.com>
Message-ID: <1116312711.880415.255930@g44g2000cwa.googlegroups.com>

janeaustin... at hotmail.com wrote:
> > Okay, I'll use one of the CJK codecs as the example. EUC-KR is the
> > default encoding.
> >
> > >>> import sys;sys.getdefaultencoding()
> > 'euc-kr'
> > >>> '??'
> > '\xc7\xd1\xb1\xdb'

That is the problem. Non-ascii characters in byte strings are
deprecated. Here is what I get when I run a deprecated hello
world program in Russian:
------- hello.py ---------
print "??????????, ???!"
--------------------------
C:\py>c:\Python24\python.exe hello.py
sys:1: DeprecationWarning: Non-ASCII character '\xc7' in file
text.py on line 1,  but no encoding declared; see
http://www.python.org/peps/pep-0263.html for details
??????????, ???!
--------------------------
Oops, not only there is a warning, but it doesn't even work
on Windows in Russian locale. To correct the program I need
to switch to unicode strings:
------- hello.py ---------
# -*- coding: windows-1251 -*-
print u"??????????, ???!"
--------------------------
C:\py>c:\Python24\python.exe hello.py
??????????, ???!
--------------------------

Since non-ascii characters are deprecated in byte strings,
any non-ascii encoding for sys.getdefaultencoding() is
deprecated as well. Don't set it to 'euc-kr'.


> Any suggestions or any plans in future python versions?

In python 3.0 byte strings will be gone. So you won't be
able to put non-ascii characters into them.


  Serge.



From jo at durchholz.org  Tue May 17 03:01:02 2005
From: jo at durchholz.org (Joachim Durchholz)
Date: Tue, 17 May 2005 09:01:02 +0200
Subject: tree functions daily exercise
In-Reply-To: <1116236529.172707.174570@g47g2000cwa.googlegroups.com>
References: <1115969822.361451.100620@g47g2000cwa.googlegroups.com>
	<87r7gbr1rg.fsf@sefirot.ii.uib.no>
	<cBIhe.1762$uR4.262@newsread2.news.atl.earthlink.net>
	<1116236529.172707.174570@g47g2000cwa.googlegroups.com>
Message-ID: <d6c4ta$lpd$1@online.de>

xah at xahlee.org wrote:
 > K!
 > http://en.wikipedia.org/wiki/K_programming_language
 >
 > Interesting.
 > Looking at your program, they are so short. I don't know if they are
 > full implementation or what...

That's no surprise: list and tree processing are often built right into 
more expressive languages, and K seems to be one of these.

Regards,
Jo


From fredrik at pythonware.com  Fri May  6 13:18:07 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Fri, 6 May 2005 19:18:07 +0200
Subject: annonymous functions -- how to
References: <1115239458.776800.240080@g14g2000cwa.googlegroups.com><d5bdip$bpp$05$2@news.t-online.com><42795acb.685370470@news.oz.net><1115264804.625020.203800@f14g2000cwb.googlegroups.com><YuWdnVUxIKrdmuffRVn-oA@powergate.ca>	<TPree.10739$fI.442@fed1read05><mailman.84.1115365568.29826.python-list@python.org>
	<2fNee.10965$fI.8507@fed1read05>
Message-ID: <d5g8fm$619$1@sea.gmane.org>

Dave Benjamin wrote:

> > so name them all "func" or "next" or something, so you don't have
> > to think.  once the object is bound, the name is irrlevant.
>
> Sure, you could do this, but then you'd have multiple functions at
> different nesting levels with the same name, which would be confusing.

"I don't wanna try that", you mean.

because if you had done so, you would have noticed that "multiple
functions with the same name" doesn't have to be any more confusing
than "multiple print statements" or "multiple if statements" (as long as
you're not using bad names on purpose, of course).

> > there's also:
> >
> >     def add_thingy(self):
>
> What object is "self"? Are we defining a method at this point?

if you have a problem with methods, you shouldn't use Python.

>
> >         yield get_new_thingy_id; thingy_id = self.result
>
> What is "get_new_thingy_id"? A function? To whom are we yielding here?

I could have sworn that you mentioned event-driven programming
in your original post.  if that's still what you're doing, the answers
are "a token" and "the event source".

</F>





From philippe at philippecmartin.com  Wed May 18 08:35:13 2005
From: philippe at philippecmartin.com (Philippe C. Martin)
Date: Wed, 18 May 2005 12:35:13 GMT
Subject: How to learn OO of python?
References: <mailman.130.1116402087.8733.python-list@python.org>
Message-ID: <5EGie.1718$5Z1.1396@newssvr30.news.prodigy.com>

You might want to look at this first:

http://pigseye.kennesaw.edu/~dbraun/csis4650/A&D/UML_tutorial/
http://uml.tutorials.trireme.com/






could ildg wrote:

> I have learned python for over a month.
> I heard that it was very easy to learn, but when I tried to know OO of
> python, I found it really weird, some expressions seem very hard to
> understand, and I can't find enough doc to know any more about it.
> So, I wonder how did you master python? And where to find some cool docs?
> 
> Thanks.



From rbt at athop1.ath.vt.edu  Tue May  3 08:59:14 2005
From: rbt at athop1.ath.vt.edu (rbt)
Date: Tue, 03 May 2005 08:59:14 -0400
Subject: [Errno 9] Bad File Descriptor on Windows 2003 Server & Py 2.4.1
Message-ID: <d57sj2$amj$1@solaris.cc.vt.edu>

The below script produces a '[Errno 9] Bad File Descriptor' when 
executed. If I remove the try: except: statements, the script stops when 
the error occurs.

The purpose of the script is to monitor the size of the three main logs 
on a Windows 2003 server and send and email should any of the logs get 
shorter. It works fine... just don't know *why* it produces the '[Errno 
9] Bad File Descriptor' error.

I'm running Python 2.4.1 on Windows 2003 SP1 Server with no funky win32 
extensions ;)

logs = ['AppEvent.Evt', 'SecEvent.Evt', 'SysEvent.Evt']

app_size = 0
sec_size = 0
sys_size = 0

def send_email(LogName, old_size, new_size):
     f = "Somebody<XXXXXXXXX at vt.edu>"
     t = "Somebody_Else at vt.edu"

     msg = MIMEText("""old_size = %d, new_size = %d""" %(old_size, 
new_size))

     msg["Subject"] = "%s Log Just Got Shorter" %LogName
     msg["Message-id"] = email.Utils.make_msgid()
     msg["From"] = f
     msg["To"] = t

     h = "smtp.vt.edu"
     s = smtplib.SMTP(h)
     s.sendmail(f, t, msg.as_string())
     s.quit()

while 1:

     for log in logs:

         try:

             a = os.stat('C:\WINDOWS\System32\config\%s' %log)
             cur_size = a[6]
             print log
             print "cur_size", cur_size

             if log == 'AppEvent.Evt':
                 print "old_size", app_size, "\n"
                 if cur_size >= app_size:
                     app_size = cur_size
                     time.sleep(6)
                     continue
                 else:
                     send_email(log, app_size, cur_size)
                     time.sleep(6)
                     continue

             elif log == 'SecEvent.Evt':
                 print "old_size", sec_size, "\n"
                 if cur_size >= sec_size:
                     sec_size = cur_size
                     time.sleep(6)
                     continue
                 else:
                     send_email(log, sec_size, cur_size)
                     time.sleep(6)
                     continue

             else:
                 print "old_size", sys_size, "\n"
                 if cur_size >= sys_size:
                     sys_size = cur_size
                     time.sleep(6)
                     continue
                 else:
                     send_email(log, sys_size, cur_size)
                     time.sleep(6)
                     continue

         except Exception, e:
             fp7 = file('log_mon_exception.txt', 'a')
             print >> fp7, e
             fp7.close()


From jdc at uwo.ca  Tue May  3 15:30:21 2005
From: jdc at uwo.ca (Dan Christensen)
Date: Tue, 03 May 2005 15:30:21 -0400
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <KIPde.80381$uy4.5183583@phobos.telenet-ops.be>
References: <d4u60o$akh$1@news2.netvision.net.il>
	<mailman.47.1114818531.14961.python-list@python.org>
	<3dg5isF6qe1nhU1@news.dfncis.de> <d4v1an$j7q$1@sea.gmane.org>
	<1f7befae05043000165448b8d@mail.gmail.com>
	<mailman.55.1114846630.14961.python-list@python.org>
	<Pine.SOL.4.33.0505031353330.17143-100000@innovate>
	<KIPde.80381$uy4.5183583@phobos.telenet-ops.be>
Message-ID: <87hdhkaz02.fsf@uwo.ca>

Roel Schroeven <rschroev_nospam_ml at fastmail.fm> writes:

> Chris McAloney wrote:
>
>> Hi all,
>> 
>> Okay, so I've been working on level seven for a LONG time now.  I've
>> decoded the first message to get the hint for the next level.  Using the
>> same tactics, then I decode the hint as well, but there are non-printable
>> characters.  I've tried stripping out those characters, quoting them to
>> include in the URL and various anagrams of the printable characters, but
>> nothing works.  Does anybody have any suggestions?
>
> I just took a guess for the first of those non-printable characters, and 
> proceeded from there. I thought it was going to be too simplistic, but 
> it worked. And fortunately my first guess was the right one.

Hmm, I didn't get any non-printable characters, just a regular English
word to be used to get to level 8.  I think you guys must be doing
something wrong...

Dan


From flamesrock at gmail.com  Wed May 11 02:27:01 2005
From: flamesrock at gmail.com (flamesrock)
Date: 10 May 2005 23:27:01 -0700
Subject: windows directories for curr user
In-Reply-To: <1115791696.278982.56430@g43g2000cwa.googlegroups.com>
References: <1115769947.020454.170340@f14g2000cwb.googlegroups.com>
	<1115791696.278982.56430@g43g2000cwa.googlegroups.com>
Message-ID: <1115792821.399365.319620@z14g2000cwz.googlegroups.com>

thanks!!



From censored at dontemailme.com  Sat May 28 05:11:46 2005
From: censored at dontemailme.com (censored)
Date: Sat, 28 May 2005 18:11:46 +0900
Subject: How to load plugins as objects?
Message-ID: <pan.2005.05.28.09.11.45.563753@dontemailme.com>

Hi. I'm hoping for a bit of programming guidance here ....

I have an application I wrote (it's an irc bot fyi), with which I want to
use plugins. 

Basically, I want there to be directory called plugins/ . 

In plugins, there should be a bunch of *.py files. Each file should
contain a single class.

When the application launches, I want the interpreter to scan the
plugins/ dir for *.py files, and load each class in each every *.py file
as an object an object in memory. 

I want it to so that every time I want the app to perform a new function,
I just write a plugin and stick it in the plugins/ directory.

What's the easiest way to go about this?


From philippe at philippecmartin.com  Tue May 17 18:41:13 2005
From: philippe at philippecmartin.com (Philippe C. Martin)
Date: Tue, 17 May 2005 22:41:13 GMT
Subject: Sorting x lists based on one list ... maybe an example would make
	sense:
References: <eonie.426$VB6.363@newssvr12.news.prodigy.com>
	<ssnie.428$VB6.184@newssvr12.news.prodigy.com>
	<428A68DF.4070705@syscononline.com>
Message-ID: <dquie.697$wb2.557@newssvr11.news.prodigy.com>

I had no clue this was feasible!

Python folks should get the Nobel price !




Larry Bates wrote:

> Why not merge the lists together using zip() and then
> sort.
> 
> info=zip(l1, l2, l3)
> info.sort()
> info.reverse
> 
> Larry Bates
> 
> Philippe C. Martin wrote:
>> l1 = ['a','b','c']
>> l2 = ['toto','titi','tata'] # 'toto' refers to 'a', 'titi' to b' ....
>> l3 = ['foo','bar','doe'] # 'foo' refers to 'a' ........
>> 
>> I want to reverse sort l1 and have l2 and l3 follow accordingly.
>> 
>> Regards,
>> 
>> Philippe
>> 
>> 
>> 
>> 
>> 
>> 
>> Philippe C. Martin wrote:
>> 
>> 
>>>Hi,
>>>
>>>I'm looking for an easy algorithm - maybe Python can help:
>>>
>>>I start with X lists which intial sort is based on list #1.
>>>
>>>I want to reverse sort list #1 and have all other lists sorted
>>>accordingly.
>>>
>>>Any idea is welcome.
>>>
>>>Regards,
>>>
>>>Philippe
>> 
>>



From mefjr75 at hotmail.com  Sun May  1 18:01:21 2005
From: mefjr75 at hotmail.com (M.E.Farmer)
Date: 1 May 2005 15:01:21 -0700
Subject: Webbrowser On Windows
In-Reply-To: <mailman.85.1114978611.14961.python-list@python.org>
References: <mailman.85.1114978611.14961.python-list@python.org>
Message-ID: <1114984881.087927.11700@o13g2000cwo.googlegroups.com>

Hello Andrea,
I have played around for a few seconds and have a few suggestions.
The code is a little baffling it appears that there is no way to do
that on windows.
I have looked into Internet Explorer and have found that there is an
option in  Internet Explorer that controls this.
In Internet Explorer ( some things may have changed or be slightly
diffrent in your version ):
open I.E. -> goto top toolbar and click:
Tools->Internet Options->Browsing->Reuse windows for launching
shortcuts.
Uncheck that option and you should be able to just os.startfile or
webrowser and have it open a new window.
Have not looked into it but you can probably do this easily with
win32api .
Search MSDN and then translate that into win32api for Python.
hth,
M.E.Farmer



From Robert at AbilitySys.com  Mon May  2 14:32:19 2005
From: Robert at AbilitySys.com (Robert D. Young)
Date: Mon, 2 May 2005 11:32:19 -0700
Subject: How to tell if invoked through IDLE or command line?
Message-ID: <117cshk6l796o75@corp.supernews.com>

I've probably asked this before, but how can I tell within the program I'm
running if the .py files was involved by "run module" in IDLE or by using
the .py assoication with the python.exe program? I'd like to prevent running
under certain circumstances, or pop-up warnings, or change character
displays (some look different when run under IDLE).

- Robert




From terjeja at gmail.com  Mon May  2 16:21:20 2005
From: terjeja at gmail.com (terjeja at gmail.com)
Date: 2 May 2005 13:21:20 -0700
Subject: Mouseclick
In-Reply-To: <mailman.41.1115059746.6583.python-list@python.org>
References: <1e140f34.0505021030.9f615dc@posting.google.com>
	<mailman.41.1115059746.6583.python-list@python.org>
Message-ID: <1115065280.936189.67050@o13g2000cwo.googlegroups.com>


Benji York wrote:
> Terje Johan Abrahamsen wrote:
> > I have been trying desperately for a while to make Python push the
> > left mousebutton.
>
> Here's some code I've used to simulate a *right* click, but it should

> be obvious how to make it do what you want:
>
> void sendRightClick(void)
> {
>      PostMessage(GetForegroundWindow(), WM_RBUTTONDOWN, MK_RBUTTON,
0);
>      PostMessage(GetForegroundWindow(), WM_RBUTTONUP, 0, 0);
> }

Thanks for the input. I have 'Pythonized' the code a little:

>>> def click():
... 	windll.user32.SetCursorPos(100, 100)
... 	win32gui.PostMessage(win32gui.GetActiveWindow(),
win32con.WM_LBUTTONDOWN, win32con.MK_LBUTTON, 0)
... 	win32gui.PostMessage(win32gui.GetActiveWindow(),
win32con.WM_LBUTTONUP, 0, 0)

and when I try it like this:

n = click()

Sure, the cursor moves, but it does not click. What am I doing wrong?

Thanks in advance



From just at xs4all.nl  Wed May  4 08:51:59 2005
From: just at xs4all.nl (Just)
Date: Wed, 04 May 2005 14:51:59 +0200
Subject: py2exe and library.zip
References: <mailman.76.1115095357.6583.python-list@python.org>
	<5uadnUTTqv6Iw-rfRVn-qw@powergate.ca>
	<mailman.129.1115156250.6583.python-list@python.org>
	<maednQTrx_iJLOXfRVn-hA@powergate.ca>
Message-ID: <just-EE0D70.14515904052005@news1.news.xs4all.nl>

In article <maednQTrx_iJLOXfRVn-hA at powergate.ca>,
 Peter Hansen <peter at engcorp.com> wrote:

> [ ... ] (Note to self: check if zip files that can 
> be in sys.path can be compressed,

Yes.

> and if py2exe compresses them.)

Don't know, but I assume yes.

Just


From reallarryboy at yahoo.com  Wed May 25 21:43:44 2005
From: reallarryboy at yahoo.com (mwdsmith)
Date: 25 May 2005 18:43:44 -0700
Subject: Checking for a full house
Message-ID: <1117071824.882035.250710@g49g2000cwa.googlegroups.com>

Hi, I'm new to python, and I'm not sure if this is the place to post
this kind of question; so feel free to tell me if I should take this
elsewhere.

So, to start me off on python, I decided to put together a little
script to test the probabilities of rolling certain combinations of
dice.  Below is my code for checking for a full house (when rolling
with 5 dice).  A roll is a list, eg [1, 3, 5, 1, 4] (this example is
not a full house)

def removeAll(element, num2Rem, list):
    l = list[:]
    for num in range(0, num2Rem):
        l.remove(element)
    return l

def isfullHouse(roll):
    for die in range(1,7):
        if roll.count(die)==3:
            l = removeAll(die, 3, roll)
            if l[0]==l[1]:
                return 1
    return 0

My questions is this: is there a better way to do this?  A way that's
more natural to python, or just more efficient perhaps?

ps. A roll of [1, 2, 1, 1, 2] is a full house (three of one kind and
two of another)



From skip at pobox.com  Wed May 18 09:40:15 2005
From: skip at pobox.com (Skip Montanaro)
Date: Wed, 18 May 2005 08:40:15 -0500
Subject: Python forum
In-Reply-To: <428B1803.80509@softhome.net>
References: <mailman.84.1116320178.8733.python-list@python.org>
	<pan.2005.05.17.10.38.09.537008@gmx.at>
	<428B1803.80509@softhome.net>
Message-ID: <17035.17855.129397.462296@montanaro.dyndns.org>


    >> If you speak German, there is a forum at www.python-forum.de .  There
    >> is also an english one at http://python-forum.org/py/index.php, but
    >> as you can see, there's not much traffic :-/

    Jonas> There are few messages because they are not known. I believe that
    Jonas> they would be due to add in the resources of python.org

I think the general thought is that python.org should link to proven
resources as opposed to endorse unproven ones.  "Endorse" is probably too
strong a word, but the resources to maintain the website are limited, so we
have to be judicious about what we add.  Even in the Python world, not every
scrap of information is useful.

In any case, I've updated the /community/lists.html page on the python.org
website with this information.  I also located a French language forum
mentioned in the docs and added the German language forum to the German
section of the doc/NonEnglish.html page.

(Is "forums" okay as a plural of "forum" or should I have used "fora"?)

Skip


From bogus@does.not.exist.com  Thu May 19 09:35:02 2005
From: bogus@does.not.exist.com ()
Date: Thu, 19 May 2005 13:35:02 -0000
Subject: No subject
Message-ID: <mailman.12.1572215405.3356.python-list@python.org>

#! rnews 1636
Newsgroups: comp.lang.python
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From: Harry George <harry.g.george at boeing.com>
Subject: Re: NaN support etc.
X-Nntp-Posting-Host: cola2.ca.boeing.com
Content-Type: text/plain; charset=iso-8859-1
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Sender: hgg9140 at cola2.ca.boeing.com
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References: <mailman.160.1116438390.8733.python-list at python.org> <428ba190$0$7687$9b622d9e at news.freenet.de> <1116449707.021063.132500 at g44g2000cwa.googlegroups.com>
Mime-Version: 1.0
Date: Thu, 19 May 2005 13:14:32 GMT
Xref: news.xs4all.nl comp.lang.python:378109

"S?bastien Boisg?rault" <Sebastien.Boisgerault at gmail.com> writes:

> Martin v. L?wis a ?crit :
> > Andreas Beyer wrote:
> > > How do I find out if NaN, infinity and alike is supported on the
> current
> > > python platform?
[snip]
> 
> But, practically, I have never found a platform where
> the following fpconst-like code did not work:
> 
>     import struct
>     cast = struct.pack
> 
>     big_endian = cast('i',1)[0] != '\x01'
>     if big_endian:
>        nan = cast('d', '\x7F\xF8\x00\x00\x00\x00\x00\x00')[0]
>     else:
>        nan = cast('d', '\x00\x00\x00\x00\x00\x00\xf8\xff')[0]
> 
> Can anybody provide an example of a (not too old or
> exotic) platform where this code does not behave as
> expected ?
> 
> Cheers,
> 
> SB
> 

I use fpconst too.  I've been concerned that its source home seems to
wander.  Any chance of it being added to the base distro?


-- 
harry.g.george at boeing.com
6-6M21 BCA CompArch Design Engineering
Phone: (425) 294-4718


From gvanrossum at gmail.com  Mon May  2 11:04:40 2005
From: gvanrossum at gmail.com (guido@python.org)
Date: 2 May 2005 08:04:40 -0700
Subject: How to kill a SocketServer?
In-Reply-To: <7xekcq75av.fsf@ruckus.brouhaha.com>
References: <7xwtqj1lh1.fsf@ruckus.brouhaha.com>
	<mailman.83.1114972348.14961.python-list@python.org>
	<7xpswa4wfu.fsf@ruckus.brouhaha.com>
	<17013.25972.965219.254879@montanaro.dyndns.org>
	<mailman.5.1114997245.6583.python-list@python.org>
	<7xekcq75av.fsf@ruckus.brouhaha.com>
Message-ID: <1115046280.413931.16970@g14g2000cwa.googlegroups.com>

[Skip Montanaro]
> >     def serve_forever(self):
> >         while self.serving:
> >             r,w,e = select.select([self.socket], [], [],
self.pause)
> >             if r:
> >                 self.handle_request()
> >
> > and set self.pause to something short-ish.  The select call times
out and
> > the server exits.

[Paul Rubin]
> Ah, good point.  Something like this should probably be added to
> SocketServer.py (optional timeout parameter to serve_forever), or at
> least the trick should be mentioned in the docs.

I like this idea, and perhaps you all could come up with some more
useful APIs in this area; I know that I often struggle a bit with
getting these servers to stop.

(I also like the idea of having the worker thread mixin part of the
standard library -- it seems generally useful.)

--Guido van Rossum (home page: http://www.python.org/~guido/)



From bob at greschke.com  Wed May 18 22:36:09 2005
From: bob at greschke.com (Bob Greschke)
Date: Wed, 18 May 2005 20:36:09 -0600
Subject: Tkinter Return/Enter key handling
References: <M6CdnS9Wpto3TRbfRVn-3g@nmt.edu>
	<mailman.180.1116466047.8733.python-list@python.org>
Message-ID: <VpSdnRdZ_aY6ZhbfRVn-ow@nmt.edu>

Sorry. Yeah, Linux.  Eww. Ick.  Don't want to mess with .Xdefaults.  It 
works, so I guess I'll just keep the .bind.  Thanks, Phil!

"phil" <phillip.watts at anvilcom.com> wrote in message 
news:mailman.180.1116466047.8733.python-list at python.org...
> If you are talking Linux there's .Xdefaults
> Which I had to resort to for tn5250.
> For Tkinter apps its a LOT easier to just use bind.
>
> Win32? dunno.




From http  Thu May 19 19:59:25 2005
From: http (Paul Rubin)
Date: 19 May 2005 16:59:25 -0700
Subject: Tkinter special math chars
References: <mailman.211.1116515132.8733.python-list@python.org>
Message-ID: <7xll6a6a3m.fsf@ruckus.brouhaha.com>

phil <phillip.watts at anvilcom.com> writes:
> Using Tkinter to teach high school geometry.  Sorta committed to
> Tkinter at least for now.  Would like to use some special chars like
> limits, infinity, square root, cube root and a buch more.

If you want to get really fancy, you could do what Wikimedia does:
take TeX input, run it through TeX and a dvi converter and make it
into a graphic that you simply display as a .gif.


From reidarok at gmail.com  Thu May 26 09:17:21 2005
From: reidarok at gmail.com (reidarok at gmail.com)
Date: 26 May 2005 06:17:21 -0700
Subject: Access from one class to methode of other class
In-Reply-To: <3flu22F8g4u4U1@news.dfncis.de>
References: <3flu22F8g4u4U1@news.dfncis.de>
Message-ID: <1117113441.649947.315350@g44g2000cwa.googlegroups.com>

I don't know if your're actually calling the classes '1' and '2', but
that's a really bad idea!

> class 2:
>    def ins(self)
>        d.entry.insert(variable)

This is probably where you're getting the NameError. d is not defined,
so calling d.entry will generate an error.

Reidar



From Scott.Daniels at Acm.Org  Tue May  3 10:21:31 2005
From: Scott.Daniels at Acm.Org (Scott David Daniels)
Date: Tue, 03 May 2005 07:21:31 -0700
Subject: problem in the compiler ?
In-Reply-To: <mailman.95.1115121292.6583.python-list@python.org>
References: <338366A6D2E2CA4C9DAEAE652E12A1DE025204C3@au3010avexu1.global.avaya.com>
	<mailman.95.1115121292.6583.python-list@python.org>
Message-ID: <427782e9$1@nntp0.pdx.net>

Glauco Silva wrote:
> python : 2.3.5
> os: win 2K
This part is good enough (though sometimes it helps to mention the 
service pack number
on windows systems).

> My code is like this:
> 
> MyClass()
> 
> class MyClass:
>      def __init__(self):
>          btn = RadioButton(command=self.Function)
>      def Function(self):
>          print "Enter in the function"

This is not good enough.  Show us a small actual example that exhibits
the problem behavior on your machine.  Often in the course of doing this
distillation, the original problem will become clear to you.  The code
above fails with:

Traceback (most recent call last):
   File "<pyshell#0>", line 1, in -toplevel-
     MyClass()
NameError: name 'MyClass' is not defined

on the initial call to MyClass().  I suspect this is not what you care
about.

Don't make people trying to help you do any work you cannot do yourself.
Imagine yourself browsing the newsgroup and trying to decide whether to
spend some time trying to help someone with a problem.  Would _you_ want
to spend time trying to guess what the code was with the problem as well
as what the problem was, or would you decide to help someone else out?

--Scott David Daniels
Scott.Daniels at Acm.Org


From a at b.c  Mon May  9 02:52:36 2005
From: a at b.c (D H)
Date: Mon, 09 May 2005 01:52:36 -0500
Subject: Fredrik Lundh
In-Reply-To: <mailman.191.1115619451.29826.python-list@python.org>
References: <mailman.139.1115189526.6583.python-list@python.org><maednQfrx_iwL-XfRVn-hA@powergate.ca>	<Av-dnbF5u_SOpOffRVn-vQ@comcast.com>	<mailman.66.1115324909.29826.python-list@python.org>	<k42dnWFaUMRQeePfRVn-pg@comcast.com>	<mailman.188.1115614698.29826.python-list@python.org>	<h9qdneSvU71kZuPfRVn-rw@comcast.com>
	<mailman.191.1115619451.29826.python-list@python.org>
Message-ID: <y7mdnd9e-JclleLfRVn-og@comcast.com>

Sakesun Roykiattisak wrote:
> IMHO, Pythonware.com does not have to be about python. It can be 
> anything the maintainer want it to be.
> 
> Get the point ?

You successfully repeated my own argument, so yes, I get the point.


From kraus at hagen-partner.de  Fri May 13 09:38:37 2005
From: kraus at hagen-partner.de (Wolfram Kraus)
Date: Fri, 13 May 2005 15:38:37 +0200
Subject: doc tags?
In-Reply-To: <mailman.23.1115990661.29328.python-list@python.org>
References: <mailman.23.1115990661.29328.python-list@python.org>
Message-ID: <d62ajn$6lp$1@ork-un.noris.net>

Wolfram Kriesing wrote:
> i was already searching and remember i had seen something like "its not needed".
> 
> Anyway, are there any doc tags, like in Java/PHPDoc etc, where you can
> describe parameters (@param[eter]), return values (@ret[urn]),
> attributes (@var), references (@see), etc?
> 
> I guess I have just not found the link to the last flameware about it :-))
> 

I'm not sure if there is something like that builtin, but you can use 
epydoc: http://epydoc.sourceforge.net/

HTH,
Wolfram :-)


From mwm at mired.org  Thu May 12 01:24:55 2005
From: mwm at mired.org (Mike Meyer)
Date: Thu, 12 May 2005 00:24:55 -0500
Subject: Finding startup files
References: <mailman.375.1115827885.29826.python-list@python.org>
	<1115829176.541687.22090@z14g2000cwz.googlegroups.com>
	<1184dj36mp5sdc6@corp.supernews.com>
	<mailman.406.1115849233.29826.python-list@python.org>
Message-ID: <86d5rxkod4.fsf@guru.mired.org>

jeff elkins <jeffelkins at earthlink.net> writes:

> On Wednesday 11 May 2005 04:44 pm, Grant Edwards wrote:
>> On 2005-05-11, hemagician at gmail.com <hemagician at gmail.com> wrote:
>> > The following script demonstrates a method that should work for you. I
>> > believe it is entirely cross-platform.
>> >
>> > #! /usr/bin/python
>> >
>> > import sys
>> > import os
>> >
>> > print os.path.abspath(os.path.dirname(sys.argv[0]))
>>
>> That will probably work most of the time, but...
>>
>>  1) you're not gauranteed that argv[0] contains the application
>>     path/filename.
>>
>>  2) the directory containing the executable is not where
>>     configuration files are supposed to be stored under
>>     Unix/Linux.
>
> Thanks Grant,
>
> I live and develop in Linux, but unfortunately, 99.99% of the users of this 
> particular application (analysis of medical laboratory data) will be working 
> with Windows. 

Yes, but Windows these days supports multiple users. Are you sure that
you want to restrict your users to one configuration file per
installed version of the program?

I'm not sure Windows has a good solution to this problem. My
experiences with trying to share applications between users on Windows
haven't been very pleasant.

        <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From ville at spammers.com  Mon May 23 02:34:35 2005
From: ville at spammers.com (Ville Vainio)
Date: 23 May 2005 09:34:35 +0300
Subject: first release of PyPy
References: <mailman.264.1116625088.8733.python-list@python.org>
	<1116629407.638782.145950@g47g2000cwa.googlegroups.com>
	<1116644536.741250.249860@g44g2000cwa.googlegroups.com>
	<mailman.279.1116649250.8733.python-list@python.org>
	<1116653460.808204.74460@g43g2000cwa.googlegroups.com>
	<87mzqpytep.fsf@wilson.rwth-aachen.de>
	<7xfywhxerd.fsf@ruckus.brouhaha.com>
	<87is1dyru8.fsf@wilson.rwth-aachen.de>
	<du7hdgxt4th.fsf@amadeus.cc.tut.fi>
	<mailman.303.1116722836.8733.python-list@python.org>
Message-ID: <du7br728n7o.fsf@mozart.cc.tut.fi>

>>>>> "Christian" == Christian Tismer <tismer at stackless.com> writes:

    >> PyPy is written in python, if it can be compiled then the programs
    >> can
    >> be as well.

    Christian> Well, this is not really true. PyPy is written in
    Christian> RPython, a sub-language of Python that is implicitly
    Christian> defined by "simple and static enough to be compilable".

Could it be possible to tag some modules in application code as
RPython-compatible, making it possible to implement the speed critical
parts in RPython?

-- 
Ville Vainio   http://tinyurl.com/2prnb


From jerf at jerf.org  Sun May  1 18:16:12 2005
From: jerf at jerf.org (Jeremy Bowers)
Date: Sun, 01 May 2005 18:16:12 -0400
Subject: Python interpreter in Basic or a Python-2-Basic translator.
References: <1114953507.031865.244920@g14g2000cwa.googlegroups.com>
Message-ID: <pan.2005.05.01.22.16.11.61952@jerf.org>

On Sun, 01 May 2005 06:18:27 -0700, Engineer wrote:
> The security 'droids have decided that since the MS Office Suite is a
> "standard" application then software written in MS Office VBA must be
> "safe."

"Melissa". (Google hint: "Virus".)

Given the brazen stupidity demonstrated by these decision makers in the
face of *internationally newsworthy* plain facts to the contrary,
this may be a "brush up the resume" situation. Life's short.

Good luck.

More constructively, see if you can convince your VBA installation to run
on Javascript(/Jscript) instead of Visual Basic. While it has some
annoyances next to Python, by and large it should be a much more tolerable
choice. It's not Python, but it's surprisingly close in a lot of ways.


From aa at hanmail.net  Fri May 27 19:30:25 2005
From: aa at hanmail.net (Çϳª·Î)
Date: Sat, 28 May 2005 08:30:25 +0900
Subject: just a test .sorry
Message-ID: <d78aj8$t1g$1@tnews.hananet.net>

sorry




From t.bettio at transnorm.ch  Tue May  3 16:16:53 2005
From: t.bettio at transnorm.ch (Tiziano Bettio)
Date: Tue, 03 May 2005 22:16:53 +0200
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <d4u60o$akh$1@news2.netvision.net.il>
References: <d4u60o$akh$1@news2.netvision.net.il>
Message-ID: <4277DC35.6020607@transnorm.ch>

PLEASE HELP...

What the hell do i have to pronounce in puzzle 5????

Some useful hints would be awesome


thx


From tgm2tothe10thpower at replacetextwithnumber.hotmail.com  Wed May 25 09:45:38 2005
From: tgm2tothe10thpower at replacetextwithnumber.hotmail.com (Thomas G. Marshall)
Date: Wed, 25 May 2005 13:45:38 GMT
Subject: What are OOP's Jargons and Complexities?
References: <1116843761.619249.144790@g47g2000cwa.googlegroups.com>
	<bAske.14563$yx.14338@fe08.lga> <1779523.9sBn8HKUcY@yahoo.com>
	<zYFke.46627$HJ2.44911@fe11.lga> <S7Ike.935$2b.513@trndny08>
	<1116988493.510520.199020@g47g2000cwa.googlegroups.com>
Message-ID: <6k%ke.55$Tm3.11@trndny09>

beliavsky at aol.com coughed up:
> Thomas G. Marshall wrote:
>

*Missattributed* --Thomas G. Marshall (I) did /not/ write the following:

>>> I am not familiar with modern Fortran. Surely it at least has
>>> argument prototyping by now?
>
> Since the 1990 standard, if Fortran subroutines and functions are
> placed in MODULEs, or if INTERFACEs are provided, the compiler checks
> that procedures are called with the right types (int or float, scalar
> or array, etc.) of arguments.
>
>> There are some fortran advocates that pop into here now and again.
>> Frankly, I'm spooked by how far fortran seems to have come.  There
>> is even OO support now.  OI.
>
> Some Fortranners think the language has gotten too big and
> complicated, sounding a bit like C programmers complaining about C++
> (I don't mean that pejoratively).

There are old-poops in every discipline.  :)


-- 
Unix users who vehemently argue that the "ln" command has its arguments
reversed do not understand much about the design of the utilities.  "ln
arg1 arg2" sets the arguments in the same order as "mv arg1 arg2".
Existing file argument to non-existing argument.  And in fact, mv
itself is implemented as a link followed by an unlink.




From fredrik at pythonware.com  Tue May 10 13:21:27 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 10 May 2005 19:21:27 +0200
Subject: object oriented inheritance problem
References: <d5qo62$l2o$1@vegh.ks.cc.utah.edu><mailman.298.1115744623.29826.python-list@python.org>
	<d5qq13$lcn$1@vegh.ks.cc.utah.edu>
Message-ID: <d5qq4q$172$1@sea.gmane.org>

Matthew Thorley wrote:

> So is elementtree a module of modules? I didn't know you could do that.

"elementtree" is a package.  see:

    http://docs.python.org/tut/node8.html#SECTION008400000000000000000

for a bit more information.

</F>





From richardjones at optushome.com.au  Mon May 23 01:04:27 2005
From: richardjones at optushome.com.au (richard)
Date: Mon, 23 May 2005 15:04:27 +1000
Subject: problem uploading ZIP file tp PyPI
References: <ECBA357DDED63B4995F5C1F5CBE5B1E802E59C94@its-xchg4.massey.ac.nz>
	<mailman.234.1116545288.8733.python-list@python.org>
	<al9q819kp0kta0mm26ej0fl04cohi51ssn@4ax.com>
Message-ID: <42916459$0$5175$afc38c87@news.optusnet.com.au>

John Machin wrote:
> FYI, there are a few unreconstructed diehards out here who neither run
> on a *x platform nor run bleeding-edge Python straight out of last
> night's CVS.

I think you need to pull your head in, mate.

The bug you discovered in PyPI is plain and simple a bug in its attempts to
discover whether an uploaded ZIP file was generated by distutils.

It's a bug. It will get fixed.

Get over your damn platform paranoia.


    Richard



From dagurp at gmail.com  Mon May  2 08:36:23 2005
From: dagurp at gmail.com (dagurp at gmail.com)
Date: 2 May 2005 05:36:23 -0700
Subject: Locale and cookies
Message-ID: <1115037383.913329.143470@l41g2000cwc.googlegroups.com>

I'm doing a small mod_python project and I'm using a locale for my own
language. This is not a problem until I start using cookies because the
cookie module in mod_python uses time.strftime() to write the
expiration times and therefore makes invalid cookies.
I tried to fix this by changing the locale back to "English" before
creating cookies and that works on Windows but not for Linux. If I use
"en_EN.ISO8859-1" it works on Linux but not on Windows.

I'm sure there's an easy way to fix this.



From dalke at dalkescientific.com  Thu May 12 22:48:17 2005
From: dalke at dalkescientific.com (Andrew Dalke)
Date: Fri, 13 May 2005 02:48:17 GMT
Subject: Escape spaces in strings
References: <d60fgh$oqr$04$1@news.t-online.com>
Message-ID: <pan.2005.05.13.02.48.15.388274@dalkescientific.com>

Florian Lindner wrote:
> is there a function to escape spaces and other characters in string for
> using them as a argument to unix command? In this case rsync
> (http://samba.anu.edu.au/rsync/FAQ.html#10)

It's best that you use the subprocess module and completely skip
dealing with shell escapes.  The module is standard with 2.4 but
you can get the module and use it for 2.2 or 2.3.

http://docs.python.org/lib/module-subprocess.html

http://cvs.sourceforge.net/viewcvs.py/*checkout*/python/python/dist/src/Lib/subprocess.py

				Andrew
				dalke at dalkescientific.com



From maxm at mxm.dk  Tue May  3 14:57:47 2005
From: maxm at mxm.dk (Max M)
Date: Tue, 03 May 2005 20:57:47 +0200
Subject: Read / Write image file
In-Reply-To: <1115143942.944188.158270@g14g2000cwa.googlegroups.com>
References: <1115143942.944188.158270@g14g2000cwa.googlegroups.com>
Message-ID: <4277c8d6$0$256$edfadb0f@dread12.news.tele.dk>

codecraig wrote:
> I have a image file on my pc, say a .jpg.  Basically I want to setup a
> client/server socket, and I want the client to read in the jpg and send
> it to the server, where the server can write that data into a new file
> on the server.
> 
> I tried just doing something like..
> 
> x = open("abc.jpg")
> y = x.read()
> tmp = open("newFile.jpg", "w")
> tmp.write(y)
> tmp.close()
> x.close()
> 
> ...but that doesn't give me a copy of abc.jpg
> 
> any ideas?  Thanks
> 

x = open("abc.jpg", 'rb')

-- 

hilsen/regards Max M, Denmark

http://www.mxm.dk/
IT's Mad Science


From oliver.andrich at gmail.com  Sat May 28 02:54:20 2005
From: oliver.andrich at gmail.com (Oliver Andrich)
Date: Sat, 28 May 2005 08:54:20 +0200
Subject: search/replace in Python
In-Reply-To: <d78opv$l99$1@domitilla.aioe.org>
References: <d78opv$l99$1@domitilla.aioe.org>
Message-ID: <6f7b52d050527235421bf8a9b@mail.gmail.com>

Hi,

2005/5/28, Vamsee Krishna Gomatam <vamsee_k at nospam.students.iiit.ac.in>:
> Hello,
>         I'm having some problems understanding Regexps in Python. I want
> to replace "<google>PHRASE</google>" with
> "<a href=http://www.google.com/search?q=PHRASE>PHRASE</a>" in a block of
> text. How can I achieve this in Python? Sorry for the naive question but
> the documentation is really bad :-(

it is pretty easy and straightforward. After you imported the re
module, you can do the job with re.sub or if you have to do it often,
then you can compile the regex first with re.compile
and afterwards use the sub method of the compiled regex.

The interesting part is

re.sub(r"<google>(.*)</google>",r"<a
href=http://www.google.com/search?q=\1>\1</a>", text)

cause here the job is done. The first raw string is the regex pattern.
The second one is the target where \1 is replaced by everything
enclosed in () in the first regex.

Here is the output of my ipython session.

In [15]: text="This is a <google>Python</google>. And some random
nonsense test....."

In [16]: re.sub(r"<google>(.*)</google>",r"<a
href=http://www.google.com/search?q=\1>\1</a>", text)

Out[16]: 'This is a <a
href=http://www.google.com/search?q=Python>Python</a>. And some random
nonsense test.....'

Best regards,
Oliver


From tjreedy at udel.edu  Fri May 27 22:50:48 2005
From: tjreedy at udel.edu (Terry Reedy)
Date: Fri, 27 May 2005 22:50:48 -0400
Subject: Software licenses and releasing Python programs for review
References: <1117245014.218831.317750@g14g2000cwa.googlegroups.com>
Message-ID: <d78m61$vq4$1@sea.gmane.org>


"poisondart" <poisondart985 at gmail.com> wrote in message 
news:1117245014.218831.317750 at g14g2000cwa.googlegroups.com...
> testing on other platforms, but also I would like to explore the
> different software licenses that are available (there seems to be

There is an Open Software Foundation (or something close) with a site 
listing and linking to numerous OSF-approved licenses.

TJR





From rkern at ucsd.edu  Wed May 18 09:48:13 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Wed, 18 May 2005 06:48:13 -0700
Subject: Python forum
In-Reply-To: <17035.17855.129397.462296@montanaro.dyndns.org>
References: <mailman.84.1116320178.8733.python-list@python.org>	<pan.2005.05.17.10.38.09.537008@gmx.at>	<428B1803.80509@softhome.net>
	<17035.17855.129397.462296@montanaro.dyndns.org>
Message-ID: <d6fh1f$cqo$1@sea.gmane.org>

Skip Montanaro wrote:

> (Is "forums" okay as a plural of "forum" or should I have used "fora"?)

dict.org says _forums_. I used _fora_, but I'm silly.

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From mrstephengross at hotmail.com  Thu May  5 13:57:43 2005
From: mrstephengross at hotmail.com (mrstephengross)
Date: 5 May 2005 10:57:43 -0700
Subject: How to detect a double's significant digits
In-Reply-To: <mailman.53.1115315497.29826.python-list@python.org>
References: <1115314620.902071.323410@f14g2000cwb.googlegroups.com>
	<mailman.53.1115315497.29826.python-list@python.org>
Message-ID: <1115315863.050413.275390@g14g2000cwa.googlegroups.com>

So how can I get the kind of information I want then?

For example:

0.103 --> 3
0.0103 --> 4
0.00103 --> 5 
0.000103 --> 6 
0.0000103 --> 7 

Any ideas?
--Steve



From dieter at handshake.de  Fri May 27 10:30:57 2005
From: dieter at handshake.de (Dieter Maurer)
Date: 27 May 2005 16:30:57 +0200
Subject: python24.zip
References: <mailman.249.1116595092.8733.python-list@python.org>
	<428e0cc3$0$29954$9b622d9e@news.freenet.de>
	<x7hdgw2zqi.fsf@handshake.de>
	<428faddd$0$26322$9b622d9e@news.freenet.de>
	<x7vf5bku5d.fsf@handshake.de>
	<4290dc79$0$9989$9b622d9e@news.freenet.de>
	<x71x7wgxsn.fsf@handshake.de> <42948097$1@nntp0.pdx.net>
Message-ID: <x7ekbsaggu.fsf@handshake.de>

Scott David Daniels <Scott.Daniels at Acm.Org> writes on Wed, 25 May 2005 07:10:00 -0700:
> ...
> I'll bet this means that the 'zope.zip', 'python24.zip' would drop
> you to "about 12500 - 10000 = 2500" failing opens.  That should be
> an easy test: sys.path.insert(0, 'zope.zip') or whatever.
> If that works and you want to drop even more, make a copy of zope.zip,
> update it with python24.zip, and call the result python24.zip.

We can not significantly reduce the amount of opens further:

  Each module import from a zip archive opens the archive.
  As we have about 2.500 modules, we will get this order of opens
  (as long as we use Python's "zipimporter").

The "zipimporter" uses a sequence of "stat"s to determine
whether it can handle a path item: it drops the last
component until it gets an existing file object and then
checks that it is indeed a zip archive.
Adding a cache for this check could save an additional few
hundreds of opens.


Dieter



From gh at ghaering.de  Fri May 20 03:22:43 2005
From: gh at ghaering.de (Gerhard Haering)
Date: Fri, 20 May 2005 09:22:43 +0200
Subject: [pysqlite] How do I use pysqlite in a multi-threading env.?
In-Reply-To: <d6k0t9$rq2$1@news.hispeed.ch>
References: <d6k0t9$rq2$1@news.hispeed.ch>
Message-ID: <20050520072243.GA27043@mylene.ghaering.de>

On Fri, May 20, 2005 at 08:42:54AM +0200, F. GEIGER wrote:
> In my wxPython-app a part of it gathers data, when a button is pressed, and
> stores it into a db.
> 
> The GUI part should display the stuff being stored in the db.
> 
> When both parts work on the same connection, I get "SQL statements in
> progress errors". Seems ok to me, you can't do that.

You get that error message with which pysqlite call?

> So, next step: Both parts get a separate connection. Now I get "Database
> locked" errors. Hmm, yes, it's GUI stuff after all, being all in the same
> thread.

One connection did not commit() or rollback() within the default
timeout (5 seconds). SQLite is not a good solution if you need
long transactions, because other SQLite connections are blocked, then.

> So, next step: I put the data gathering part into a real thread, that's
> started, wehn the "Scan" button is pressed. This way the "Database locked"-
> errors should got away. But now I get "SQLite objects created in a thread
> can only be used in that same thread.The object was created in thread id
> 3576 and this is thread id 1040". Hmm, true, I want to display db content,
> that was stored by an other thread. But that's what multi-threading
> capabilities are for!

Yes, but pysqlite's threadsafety level is 1, that means you cannot share
a connection object among multiple threads. In order to ensure that and
to avoid that you get random and unexplainable crashes, I implemented
this warning.

> I must be missing something here. Anyway, I'm a bit lost now, really. So,
> how are you doing such stuff with pysqlite?

Use multiple connections and commit/rollback early.

HTH,

-- Gerhard
-- 
Gerhard H?ring - gh at ghaering.de - Python, web & database development
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From flupke at nonexistingdomain.com  Thu May 12 09:12:59 2005
From: flupke at nonexistingdomain.com (flupke)
Date: Thu, 12 May 2005 13:12:59 GMT
Subject: Destructor Woes, was Advice needed on __del__
In-Reply-To: <mailman.447.1115894729.29826.python-list@python.org>
References: <d5o1s1$8h3$1@sea.gmane.org>	<d5obmp$cqh$1@sea.gmane.org>	<427FBAD4.3070004@anvilcom.com>	<d5ogv2$2k9$1@sea.gmane.org>	<42800279.3B26FFF3@pauahtun.org>	<mailman.244.1115687630.29826.python-list@python.org>	<DS1ge.87015$Tk7.5147767@phobos.telenet-ops.be><mailman.304.1115745700.29826.python-list@python.org>	<PfDge.88591$rd1.5444651@phobos.telenet-ops.be>
	<mailman.447.1115894729.29826.python-list@python.org>
Message-ID: <vDIge.88814$he7.5453852@phobos.telenet-ops.be>

Fredrik Lundh wrote:
> "flupke" wrote:
> 
> 
>>>Then i got a tip that you can register a function that needs to be
>>>called when the object is going to be deleted.
>>>For instance to register a function __exit, you do this:
> 
> 
>>>class line:
>>>    def __init__(s,glob,argl,color=''):
>>>        atexit.register(s.__exit)
> 
> 
>>I don't know what's wrong in your example. Here it works (doesn't help
>>you of course). I would first try with an easy example an try to test
>>the atexit functionality like that. It seems that the problem you are
>>having isn't related to the atexit part.
> 
> 
> do you (or whoever gave you the tip) have the slightest idea what atexit does?
> 
> </F> 

As i said, it works for me. I use it to log the closure of my main 
program. Maybe my first message wasn't clear on the use of atexit.

Benedict


From scrimp212 at yahoo.com  Wed May  4 12:46:25 2005
From: scrimp212 at yahoo.com (scrimp)
Date: 4 May 2005 09:46:25 -0700
Subject: FTP/TLS connection using python
Message-ID: <1115225185.951540.128460@z14g2000cwz.googlegroups.com>

Hello,
   I was wondering if there is any other way to securly connect to an
FTP site using SSL or TLS? I dont have the option of purchasing
M2Crypto from the site. Any help/suggestions would help. Thanks!

--Barry



From rbt at athop1.ath.vt.edu  Wed May 25 23:12:44 2005
From: rbt at athop1.ath.vt.edu (rbt)
Date: Wed, 25 May 2005 23:12:44 -0400
Subject: urllib2 and SSL
Message-ID: <d73erd$pjm$1@solaris.cc.vt.edu>

urllib2 handles https request flawlessly on my Linux machines, but errors out on 
Windows like this:

PythonWin 2.4 (#60, Nov 30 2004, 09:34:21) [MSC v.1310 32 bit (Intel)] on win32.
Portions Copyright 1994-2004 Mark Hammond (mhammond at skippinet.com.au) - see 
'Help/About PythonWin' for further copyright information.
working_0...
<urlopen error unknown url type: https>
working_2...
<urlopen error unknown url type: https>

Is SSL not supported on win32?


From bronger at physik.rwth-aachen.de  Wed May 11 00:55:48 2005
From: bronger at physik.rwth-aachen.de (Torsten Bronger)
Date: Wed, 11 May 2005 06:55:48 +0200
Subject: Python Graphing Utilities.
References: <-dadnS0X7IVccR3fRVn-uQ@entouch.net>
	<797fe3d405051010392c00011f@mail.gmail.com>
	<mailman.320.1115772826.29826.python-list@python.org>
Message-ID: <87psvycqej.fsf@wilson.rwth-aachen.de>

Hall?chen!

Fernando Perez <fperez.net at gmail.com> writes:

> [...]
>
> And I'd also second the matplotlib suggestion, to which I've by
> now fully switched after years of faithful gnuplot usage.
> Matplotlib is very good, has an active development community, and
> it is designed from the ground up not only as a library for
> rendering plots to screen/disk, but also for embedding into guis
> (with support for Tk, WX, GTK, QT and FLTK).

Why not for Gnuplot, by the way?

On sceen, matplotlib looks extremely good, however, I still need
Gnuplot for the hardcopy version[*].  It *seems* to me that the
programming interfaces are quite different, so a Gnuplot backend for
matplotlib would be helpful for me.

Tsch?,
Torsten.

[*] because of the "pslatex" backend, which means that the plot is
typeset by the same LaTeX run as your document --> consistent fonts,
TeX-quality formulae
-- 
Torsten Bronger, aquisgrana, europa vetus


From osv at javad.ru  Fri May 27 08:15:23 2005
From: osv at javad.ru (Sergei Organov)
Date: 27 May 2005 16:15:23 +0400
Subject: Strings for a newbie
References: <d7726f$fdg$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
Message-ID: <d7730r$qrb$1@n6.co.ru>

"Malcolm Wooden" <mwooden at dtptypes.com> writes:

> I'm trying to get my head around Python but seem to be failing miserably. I 
> use RealBasic on a Mac and find it an absolute dream! But Python....UGH!
> 
> I want to put a sentence of words into an array, eg "This is a sentence of 
> words"
> 
> In RB it would be simple:

Simple?! 7 lines of code for such a trivial task is simple?!

> Dim s as string
> Dim a(-1) as string
> Dim i as integer
> 
> s = "This is a sentence of words"
> For i = 1 to CountFields(s," ")
>   a.append NthField(s," ",i)
> next
> 
> That's it an array a() containing the words of the sentence.
> 
> Now can I see how this is done in Python? - nope!

from string import split
s = "This is a sentence of words"
a = split(s)

or,

s = "This is a sentence of words"
a = s.split()

or even

a = "This is a sentence of words".split()

-- 
Sergei.


From http  Tue May 17 02:37:31 2005
From: http (Paul Rubin)
Date: 16 May 2005 23:37:31 -0700
Subject: Windows distribution suggestions?
Message-ID: <7x3bsmfjdg.fsf_-_@ruckus.brouhaha.com>

As what must be penance for something or other, I'm needing to release
a Python app for use under Windows XP.  Please be gentle with me since
I'm a Un*x weenie and the only thing I've had much practice with under
Windows is rebooting it.

My app contains three different programs (say alice.py, bob.py, and
carol.py) that need to be independently launchable, and a dozen or so
other .py files that get imported into those first three.  What I'd
really really like is to make a single installer called (say)
"app.exe".  Launching app.exe should completely install Python, unpack
all the necessary modules, and make three icons (alice, bob, carol) on
the desktop.

I know there's various ways of building Windows distros like that, but
am not sure what's currently preferred.  Gordon McMillan's site
www.mcmillan-inc.com has had its domain expire (he really should renew
it before some squatter grabs it!) and the mirror that I've found
indicates that it was last updated for Python 2.3.  I wrote my app
under 2.4 and while I don't think I depend heavily on any 2.4
features, I'd rather not have to downgrade just to make this exe
installer.  There's also py2exe--is that as good?  

Also, what's the preferred way of releasing updates?  That is, let's
say I want to update my .py files and release a new version fairly
frequently--should I just make a new .exe every time?  Would launching
the new one cleanly overwrite or uninstall the old one?  Total
coolness would be a way to ship an "update.py" along with the app,
that syncs the app up to a Subversion repository, but that may be
asking a bit much.

I do have Visual C++ installed on the development machine, if that helps.


From utabintarbo at gmail.com  Sat May  7 10:45:04 2005
From: utabintarbo at gmail.com (utabintarbo at gmail.com)
Date: 7 May 2005 07:45:04 -0700
Subject: Ask for a tools to protect my .pyc file :)
In-Reply-To: <mailman.143.1115476079.29826.python-list@python.org>
References: <mailman.143.1115476079.29826.python-list@python.org>
Message-ID: <1115477104.218282.154990@g14g2000cwa.googlegroups.com>

pyobfuscate

http://www.lysator.liu.se/~astrand/projects/pyobfuscate/



From k04jg02 at kzoo.edu  Tue May 10 13:32:46 2005
From: k04jg02 at kzoo.edu (Joseph Garvin)
Date: Tue, 10 May 2005 17:32:46 +0000
Subject: Solipsis: Python-powered Metaverse
In-Reply-To: <d5qqo7$3dc$1@sea.gmane.org>
References: <d5qqo7$3dc$1@sea.gmane.org>
Message-ID: <4280F03E.2070903@kzoo.edu>

Terry Reedy wrote:

>Today I followed a link to an interesting Python application I have not 
>seen mentioned here before:  http://solipsis.netofpeers.net/wiki/HomePage/.
>
>"A peer-to-peer system for a massively multi-participant virtual world "
>
>It is a France Telecom R&D project, LGPL licenced, still in alpha, built on 
>Python, Twisted, WxPthon, PIL, and probably other components actual or 
>considered.  The new Node software, rewritten with Twisted, was released 
>yesterday.
>
>Terry J. Reedy
>
>  
>

I was looking at this earlier today because I was curious how they were
going to handle performance concerns (both due to Python and bandwidth).
I'm having trouble understanding all of the details -- what is the
significance of the use of a torus for the world space? Does this
somehow help in the computation of the convex hull?


From frankie.y.liu at gmail.com  Mon May  9 12:58:19 2005
From: frankie.y.liu at gmail.com (ohms377)
Date: 9 May 2005 09:58:19 -0700
Subject: Listing of declared variables and functions
Message-ID: <1115657899.543887.284720@f14g2000cwb.googlegroups.com>

Dear python users,

In interactive mode, I was wondering if there is a way to list all
declared variables and functions (and from global workspace).

Thanks,

-frankie



From mwm at idiom.com  Mon May 23 22:04:54 2005
From: mwm at idiom.com (Mike Meyer)
Date: 23 May 2005 19:04:54 -0700
Subject: Running a python program during idle time only
References: <1116637560.499307.28700@o13g2000cwo.googlegroups.com>
	<mailman.7.1116821147.18027.python-list@python.org>
	<1116869538.611233.264960@g14g2000cwa.googlegroups.com>
Message-ID: <5j64x9gz09.fsf@idiom.com>

"los" <carlos80 at gmail.com> writes:

> Thanks for all the replies.
> 
> I did try using nice under windows.  I created a java program that
> would just loop and print numbers on the screen.  Even when I ran that
> simple program with nice, (lets call it program A) as soon as I started
> the program the cpu went all the way to 100% usage.  Then when I ran
> another program that did the same thing (lets call it program B),
> program A halted to let B finish, then it started again.  Nevertheless
> it still hogged all the cpu while I was using the computer.

Actually, CPU usage going to 100% when you run a cpu-intensive program
under nice is what you expect - even want. The idea is that the nice'd
prog soaks up all the "unused" cpu on the system. You don't say whether
program B was niced or not, but from the description, it wasn't. And you
got the behavior I thought you wanted: the nice'd program quit using
any CPU at all while the normal program was running.

At least, that's the behavior I want from my backgrounded tasks.

> For my indexing program I just wrote a simple python program and called
> on the python os.walk() method to iterate through the drive and then it
> connects to a database to store some information.  Then I wrote a
> simple interface to connect to the database to search for files using
> visual basic.  Once everything is indexed it works fine, but it would
> be nice to have the program looping through and indexing the files all
> the time to account to file updates, deletes, and relocation, but
> without hurting the performance when I'm using the computer.

As has been pointed out, your daemon is doing disk i/o, which nice won't
mediate properly.

> So really what I am looking for is some way to have the program only
> start indexing and crawling through the hd after 5 minutes of no user
> interaction with the computer.

Why 5 minutes? What if you've gone to get a cup of coffee while something
that takes more than five minutes is completing? 

I'm sure there are tools for doing this kind of thing on windows. That's
pretty much how screen savers work. I haven't written a screen saver
for windows, though - so I have no idea what you're looking for.

Note that the screen savers I have written still lowered their priority
to avoid interfering with any long-running tasks you may be waiting on.
At least for CPU usage.

> I'm going to take a look at this CPU load possibility.  But I'm afraid
> that this will work similarly to "nice" in which case it will let the
> program kick in when the CPU isn't being used heavily, but I might
> still be using the computer.  

I think you're right.

On a completely different topic, this looks like the wrong way to solve
the problem. You want to update a search engine based on changes to the
underlying file system. The right way to do this isn't to just keep
rescanning the file system, it's to arrange things so that your scanner
gets notified of any changes made to the file system. I did something like 
this for my web site search engine, but that's hooked into the SCM that's
used for propogating changes to the web site. I know someone is working
on patches to the FreeBSD kernel to make this kind of thing work. It would
seem that some of the "backup" facilities that worked by keeping a mirror
of the disk on separate media would have to have used such hooks, but maybe
not.

I'm not sure this is possible. If it is, it's almost certainly deep magic.

        <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From finite.automaton at gmail.com  Wed May  4 18:01:08 2005
From: finite.automaton at gmail.com (Lonnie Princehouse)
Date: 4 May 2005 15:01:08 -0700
Subject: how can I sort a bunch of lists over multiple fields?
In-Reply-To: <Do6dnTrNEaMLnOTfRVn-hw@comcast.com>
References: <1114623282.855415.132040@l41g2000cwc.googlegroups.com>
	<1114634355.348110.141690@o13g2000cwo.googlegroups.com>
	<EYednbmZKbHHZ_LfRVn-gA@comcast.com>
	<1114710873.292998.128090@f14g2000cwb.googlegroups.com>
	<1114714105.582253.12150@f14g2000cwb.googlegroups.com>
	<uIydnXD17Z2c2-zfRVn-2A@comcast.com>
	<1114724023.743271.275710@g14g2000cwa.googlegroups.com>
	<S8qdneMehej_CezfRVn-rg@comcast.com>
	<1114796569.028242.45700@o13g2000cwo.googlegroups.com>
	<Do6dnTrNEaMLnOTfRVn-hw@comcast.com>
Message-ID: <1115244068.789209.225120@f14g2000cwb.googlegroups.com>

> If you want to compare partial keys, often the simplest approach is
to
> use tuples as keys, with the elements of the tuple being the "parts"
of
> the key.  Python's standard tuple comparison mechanism takes care of
the
> rest.

Right, but suppose it's expensive to generate each part of the key -
e.g. a database query or some kind of hash, so it doesn't make sense to
compute the whole key in advance if the first part is sufficient to
establish an ordering most of the time.   This is what I had in mind (I
should have been more clear about that)

Sure, you could put together a lazy evaluation object to use for
elements of the tuple, but this again becomes equivalent to writing a
__cmp__ function...



From david.tolpin at gmail.com  Sun May 29 17:03:33 2005
From: david.tolpin at gmail.com (david.tolpin at gmail.com)
Date: 29 May 2005 14:03:33 -0700
Subject: cgi.py?
Message-ID: <1117400613.000360.223440@f14g2000cwb.googlegroups.com>

Hi,

I've looked into cgi.py from 2.4's distribution, and its contents
puzzle me. In parse_header, the first line splits on ';':

    plist = map(lambda x: x.strip(), line.split(';'))

but header parameters may contain semicolon in quoted strings:

   Content-Type: image/jpeg; filename="home:lib;images;face.jpg"

and headers like this one will be parsed incorrectly. A few subsequent
lines unquote a quoted value, but the only place where quoted-string
production is defined is RFC 3875, and there is no quote escaping in
the production (nor in any other draft or related RFC). So, even if the
former is fixed, the latter will still prevent headers like

  Content-Type: text/plain; filename="c:\files\"; title="My Files"

from being parsed correctly. What am I missing?

David



From mathnoir at gmail.com  Sun May 29 23:50:21 2005
From: mathnoir at gmail.com (spinach)
Date: 29 May 2005 20:50:21 -0700
Subject: use of AttributesNSImpl in writing ?
Message-ID: <1117425021.642639.308070@g47g2000cwa.googlegroups.com>

I just can't find a good example for the use of AttributesNSImpl in the
context of writing XML through XMLGenerator. I need to generate XML
that uses several namespaces. The documentation is brief ("understands
attribute names as two-tuples of namespaceURI and localname"), it
appears you have to send it lots of dictionaries full of tuples.
Any clarification on this would be most appreciated.



From mikulik at physics.muni.cz  Thu May 12 13:06:08 2005
From: mikulik at physics.muni.cz (Petr Mikulik)
Date: Thu, 12 May 2005 19:06:08 +0200 (CEST)
Subject: Python Graphing Utilities.
In-Reply-To: <mailman.355.1115818069.29826.python-list@python.org>
References: <-dadnS0X7IVccR3fRVn-uQ@entouch.net>
	<797fe3d405051010392c00011f@mail.gmail.com>
	<mailman.320.1115772826.29826.python-list@python.org>
	<87psvycqej.fsf@wilson.rwth-aachen.de>
	<mailman.340.1115812092.29826.python-list@python.org>
	<87mzr2f01r.fsf@wilson.rwth-aachen.de>
	<797fe3d4050511061258bb8302@mail.gmail.com>
	<mailman.355.1115818069.29826.python-list@python.org>
Message-ID: <Pine.LNX.4.44.0505121903040.18165-100000@monoceros.physics.muni.cz>

> A pslatex backend certainly would be interesting. A Gnuplot backend
> would probably not be feasible. Does it expose its raw drawing operations?

There is a patch
[ 1027032 ] Connect gnuplot_x11 to exterior application window
http://sourceforge.net/tracker/index.php?func=detail&aid=1027032&group_id=2055&atid=302055

which allows to "Connect gnuplot_x11 to exterior application window...".

If you test it, please write a note there and the patch can go to cvs.

---
PM



From duncan.booth at invalid.invalid  Fri May 27 04:24:17 2005
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 27 May 2005 08:24:17 GMT
Subject: Case Sensitive, Multiline Comments
References: <1117137316.140791.210430@g14g2000cwa.googlegroups.com>
	<8664x5y92g.fsf@guru.mired.org> <429654DA.9050903@lexicon.net>
	<1117154013.092736.298310@g14g2000cwa.googlegroups.com>
	<qc7d9112aqr5tj8devjeaign84dc21ti8p@4ax.com>
Message-ID: <Xns96635F84E6901duncanbooth@127.0.0.1>

Dennis Lee Bieber wrote:

> On 26 May 2005 17:33:33 -0700, "Elliot Temple" <curi42 at gmail.com>
> declaimed the following in comp.lang.python:
> 
>> Thanks for the link on case sensitivity.  I'm curious about the person
>> who found case sensitivity useful though: what is it useful for?
>> 
>      Making a language run faster on slow machines since the syntax
> parsing doesn't have to do the equivalent of upper or lower casing
> anything that is not a string literal before checking for keywords or
> identifiers.
> 
>      Consider the time spent by languages like Ada and Fortran when
> they have to do case normalization every time you compile.
> 
That isn't a good argument for case sensitivity. You really aren't going to 
be able to measure a slowdown in compilation speed just because the 
compiler has to lowercase all the identifiers before using them.

What I consider good arguments for case sensitivity are:

Consistency. I've used non-case sensitive languages where the same variable 
was spelled sometimes with capitals and sometimes without. Forcing you to 
choose one case and stick to it is, IMHO a good thing. Worse, I've used 
Visual Basic where the editor will gratuitously change the case of a 
variable you just typed in because there is another occurrence of the same 
name somewhere else in a different case.

Conventions such as capitalising class names, or camelCasing can be useful. 
Again this only applies if they are used consistently.

Interoperability. Like it or not, there are other case sensitive systems 
out there. I once had the misfortune to use a Microsoft Access database 
(where lookups on indexed fields are case insensitive) to store records 
indexed by a case sensitive medical coding system. Codes in that system do 
exist which differ from other completely unrelated conditions only by the 
case of the code. The only way to handle this in a case insensitive system 
is to somehow escape each case sensitive code.

That particular example wouldn't necessarily apply to a case insensitive 
programming language, but plenty of others would: e.g. using a remote 
procedure call system to call a (case sensitive) function on another 
system.

In all such cases, the case insensitive system is the 'poor relation', it 
is the one where you have to introduce workrounds in order to communicate 
with the case sensitive system. Going in the other direction (calling a 
case insensitive function from a case sensitive system) you simply have to 
invent a convention (e.g. lowercase everything) and stick by it.

There are arguments that, especially for beginners, case sensitivity 
introduces an extra level of complexity, but the cost of losing this 
complexity would be to make Python a poor relation amongst programming 
languages.


From pyguy2 at gmail.com  Fri May 20 18:26:16 2005
From: pyguy2 at gmail.com (pyguy2 at gmail.com)
Date: 20 May 2005 15:26:16 -0700
Subject: SSL (HTTPS) with 2.4
In-Reply-To: <mailman.241.1116588685.8733.python-list@python.org>
References: <1116392416.139727.84630@g49g2000cwa.googlegroups.com>
	<428AD4D1.8030405@v.loewis.de>
	<1116396878.995648.206820@g49g2000cwa.googlegroups.com>
	<1116406256.213128.68180@f14g2000cwb.googlegroups.com>
	<grGie.3984$uR4.2802@newsread2.news.atl.earthlink.net>
	<1116422715.320683.228810@g49g2000cwa.googlegroups.com>
	<1116424363.953180.79260@g47g2000cwa.googlegroups.com>
	<1116424660.917136.79680@g47g2000cwa.googlegroups.com>
	<428b7bc5$0$7346$9b622d9e@news.freenet.de>
	<1116463961.944713.210860@g49g2000cwa.googlegroups.com>
	<mailman.208.1116513082.8733.python-list@python.org>
	<1116524774.606167.98240@f14g2000cwb.googlegroups.com>
	<1116550788.207740.171780@o13g2000cwo.googlegroups.com>
	<mailman.241.1116588685.8733.python-list@python.org>
Message-ID: <1116627976.845517.268370@z14g2000cwz.googlegroups.com>

The code I have wriitten that does auth ssl through a proxy with python
_works_ with a proxy I tested with earlier. I finally got a squid proxy
server running in which it does not work. As I get time, during the
next few days, I am going to try to debug the difference and let you
know what's up.


And I agree, getting a fix included in the dist would be a good idea.

john



From max at alcyone.com  Thu May  5 16:43:37 2005
From: max at alcyone.com (Erik Max Francis)
Date: Thu, 05 May 2005 13:43:37 -0700
Subject: How to detect a double's significant digits
In-Reply-To: <pan.2005.05.05.20.32.38.680014@jerf.org>
References: <1115314620.902071.323410@f14g2000cwb.googlegroups.com>
	<dOtee.706030$w62.64217@bgtnsc05-news.ops.worldnet.att.net>
	<pan.2005.05.05.20.32.38.680014@jerf.org>
Message-ID: <PKqdnctDV57kGOffRVn-vg@speakeasy.net>

Jeremy Bowers wrote:

> Step one for mrstephengross is to *rigorously* define what he means by
> "significant digits", then go from there. Since I think he mentioned
> something about predicting how much space it will take to print out, my
> suggestion is to run through whatever printing routines there are and get
> a string out, the measure the string, as anything else will likely be
> wrong. If that's not possible with the formatting library, you've already
> lost; you'll have to completely correctly re-implement the formatting
> library, and not only is that a major PITA, you almost never get it
> bug-for-bug right...

Especially since all of his examples have the same number of significant 
digits (3), as the term is usually meant.  Zeroes to the right are 
significant, not zeroes to the left.

-- 
Erik Max Francis && max at alcyone.com && http://www.alcyone.com/max/
San Jose, CA, USA && 37 20 N 121 53 W && AIM erikmaxfrancis
   What is it that shapes a species?
   -- Louis Wu


From teamuhlig at gmail.com  Wed May 18 12:20:18 2005
From: teamuhlig at gmail.com (john67)
Date: 18 May 2005 09:20:18 -0700
Subject: Is Python suitable for a huge, enterprise size app?
In-Reply-To: <1116432325.497438.64580@g49g2000cwa.googlegroups.com>
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>
	<1116432325.497438.64580@g49g2000cwa.googlegroups.com>
Message-ID: <1116433218.495131.71260@g49g2000cwa.googlegroups.com>

Would the allocation/deallocation memory usage issue be different than
it would be with Java?  Both Python and Java have automatic garbage
collection, correct?  Is Python's not as effective as Java's?  I think
the memory issues for the two languages would be similar in this area,
but maybe I am wrong.

John



From flupke at nonexistingdomain.com  Thu May 26 08:54:17 2005
From: flupke at nonexistingdomain.com (flupke)
Date: Thu, 26 May 2005 12:54:17 GMT
Subject: using timeit for a function in a class
Message-ID: <ZFjle.101596$KL7.6197297@phobos.telenet-ops.be>


Hi,

i tried to use timeit on a function in a class but it doesn't do what i 
think it should do ie. time :)
In stead it starts printing line after line of hello time test!
What am i doing wrong in order to time the f function?

class TimeTest(object):
     def f(self):
         print "hello time test!"

if __name__ == '__main__':
     from timeit import Timer
     s = """
     test = TimeTest()
     test.f()
     """
     t = Timer(s,"from __main__ import TimeTest")
     print t.timeit()

Regards,
Benedict Verheyen


From steve at holdenweb.com  Sun May 22 12:31:16 2005
From: steve at holdenweb.com (Steve Holden)
Date: Sun, 22 May 2005 12:31:16 -0400
Subject: SQL Query via python
In-Reply-To: <200505202357.01579.jeffelkins@earthlink.net>
References: <200505202357.01579.jeffelkins@earthlink.net>
Message-ID: <d6qc1o$562$1@sea.gmane.org>

Jeff Elkins wrote:
> I'm attempting to pass an SQL query via the console:
> 
> $ ./getbd month 05
> 
> The arguments get seem to passed correctly (via print statements) and then:
> 
>     cursor.execute ("""
>                      SELECT name, month, day ,category, city FROM bday
>                      WHERE %s = %s
>                    """,(arg1,arg2))
> 
> No results. However, if I hardcode the WHERE argument with a field name:
> 
>  cursor.execute ("""
>                      SELECT name, month, day ,category, city FROM bday
>                      WHERE month = %s
>                    """,(arg2))
> 
> It works.
> 
Because here you aren't trying to parameterize the name of a database 
object.

> How can I code the left side of the WHERE clause so I can pass an arbitrary 
> field name to search on?
> 
> 
You might have to construct the SQL statement to include the names of 
tables and columns. It's still better to use parameterization for data 
substitutions, though, because then you don't have to perform any quoting.
-- 
Steve Holden        +1 703 861 4237  +1 800 494 3119
Holden Web LLC             http://www.holdenweb.com/
Python Web Programming  http://pydish.holdenweb.com/



From foundsabin at gmail.com  Tue May 31 06:10:05 2005
From: foundsabin at gmail.com (A.K.Sabin)
Date: 31 May 2005 03:10:05 -0700
Subject: :: winreg ::
Message-ID: <1117534205.676233.143670@g47g2000cwa.googlegroups.com>

Hi Evrbdy,
I do struggle with Registry Keys. ( _winreg )
I am able to Create Keys inside
 HKEY_LOCAL_MACHINE,

=_winreg.HKEY_LOCAL_MACHINE/

IE EXTENSION is MY AIM
SOFTWARE/Microsoft/Internet Explorer/Extensions
I cant assign the values to CLSID, HOT ICON, EXEC, Default Visible.
Please Help me out.

Sabin



From sarapythonlist at yahoo.com  Sat May  7 11:55:35 2005
From: sarapythonlist at yahoo.com (Sara Khalatbari)
Date: Sat, 7 May 2005 08:55:35 -0700 (PDT)
Subject: Shell Commands in Python Code
Message-ID: <20050507155535.34927.qmail@web61110.mail.yahoo.com>

There are a lot of commands that I need to use in my
code & I don't know how to do it

Is there a way to use shell commands in Python code?


		
__________________________________ 
Do you Yahoo!? 
Yahoo! Mail - Helps protect you from nasty viruses. 
http://promotions.yahoo.com/new_mail


From http  Wed May 18 16:13:36 2005
From: http (Paul Rubin)
Date: 18 May 2005 13:13:36 -0700
Subject: SSL (HTTPS) with 2.4
References: <1116392416.139727.84630@g49g2000cwa.googlegroups.com>
	<428AD4D1.8030405@v.loewis.de>
	<1116396878.995648.206820@g49g2000cwa.googlegroups.com>
	<1116406256.213128.68180@f14g2000cwb.googlegroups.com>
	<mailman.165.1116444807.8733.python-list@python.org>
Message-ID: <7x8y2c70nj.fsf@ruckus.brouhaha.com>

Trent Mick <trentm at ActiveState.com> writes:
> Unfortunately ActivePython cannot include the SSL library by default
> because of crypto export regulations.

That hasn't been true for several years.  In principle you're supposed
to notify the commerce department but in fact they seem to just ignore
the notices:

  http://www.bxa.doc.gov/Encryption

Mozilla, MSIE, Windows, etc. all come with crypto by default.

If you want SSL in pure Python, try <http://trevp.net/tlslite>.  It's
a really nice piece of code, though (so far) not what I'd call full
featured.


From erinhouston at gmail.com  Thu May 26 10:18:09 2005
From: erinhouston at gmail.com (erinhouston at gmail.com)
Date: 26 May 2005 07:18:09 -0700
Subject: Automatically populate and submit HTML Forms
In-Reply-To: <1117071785.193503.41620@g49g2000cwa.googlegroups.com>
References: <d72h34$2is$1@solaris.cc.vt.edu>
	<1117071785.193503.41620@g49g2000cwa.googlegroups.com>
Message-ID: <1117117089.498759.196990@o13g2000cwo.googlegroups.com>

These two blog entries might be of help to you.

http://www.ishpeck.net/index.php?P=b1115239318ishpeck
second half is at
http://www.ishpeck.net/index.php?P=b1115225809ishpeck

alex23 wrote:
> Hey rbt,
>
> You should take a look at mechanize:
> http://wwwsearch.sourceforge.net/mechanize/
>
> One of its listed features is 'Easy HTML form filling, using ClientForm
> interface'.
>
> A more recent option which came up on this group a few days ago is
> twill: http://www.idyll.org/~t/www-tools/twill.html
>
> twill combines pyparsing & mechanize to provide a way of scripting
> tests for web applications. While it might not offer the functionality
> you're after (I haven't had call to use either of these), it looks very
> accessible, and could provide some good examples for using mechanize
> with your own scripts.
> 
> -alex23



From grante at visi.com  Tue May 10 19:57:31 2005
From: grante at visi.com (Grant Edwards)
Date: Tue, 10 May 2005 23:57:31 -0000
Subject: Python Graphing Utilities.
References: <-dadnS0X7IVccR3fRVn-uQ@entouch.net>
	<11823g4ph2kkp8b@corp.supernews.com>
	<PdqdnRY8h7HcoRzfRVn-rw@entouch.net>
Message-ID: <1182ijbequ9bu0e@corp.supernews.com>

On 2005-05-10, Kenneth Miller <ken.miller at entouch.net> wrote:

> Ahh Thanks for the quick replies. I'm having a look through
> them now. What would you consider the best for real time
> applications?

That depends on how fast "real time" is.  I use gnuplot-py for
1 Hz update rates with no issues.  2Hz worked OK but much
faster than that probably isn't the best application for
gnuplot.

> The idea here is to stream in the results from an A/D
> converter onto a 2d chart.

-- 
Grant Edwards                   grante             Yow!  Why is everything
                                  at               made of Lycra Spandex?
                               visi.com            


From grante at visi.com  Thu May  5 22:46:12 2005
From: grante at visi.com (Grant Edwards)
Date: Fri, 06 May 2005 02:46:12 -0000
Subject: How to detect a double's significant digits
References: <1115314620.902071.323410@f14g2000cwb.googlegroups.com>
	<mailman.59.1115316262.29826.python-list@python.org>
	<1115316826.659271.247350@o13g2000cwo.googlegroups.com>
	<iZ-dnQ8kqqS3_uffRVn-2Q@comcast.com>
	<1115320481.000911.111220@z14g2000cwz.googlegroups.com>
Message-ID: <117lmjkthk1qa24@corp.supernews.com>

On 2005-05-05, mrstephengross <mrstephengross at hotmail.com> wrote:
>>This doesn't look like Python to me.  Are you sure you're on the right
> newsgroup?
>
> Er, ok, I'm an idiot. This was all supposed to be on
> comp.lang.c++, but obviously I posted on the wrong one. Sorry
> for all the hassle. In python, this stuff is a heck of a lot
> easier.

No, it isn't.  The question is equally meaningless in any
language.

-- 
Grant Edwards                   grante             Yow!  WHO sees a BEACH
                                  at               BUNNY sobbing on a SHAG
                               visi.com            RUG?!


From list.repository at gmail.com  Wed May 25 17:21:04 2005
From: list.repository at gmail.com (list.repository at gmail.com)
Date: 25 May 2005 14:21:04 -0700
Subject: py2exe problems with win32com [ EnsureDispatch('ADODB.Connection') ]
Message-ID: <1117056064.693253.74330@z14g2000cwz.googlegroups.com>

Problem:

Works fine when running python test.py but fails when executing
test.exe.


test.py:

conn = win32com.client.gencache.EnsureDispatch('ADODB.Connection')
conn.Open("Provider='SQLOLEDB';Data Source='.';Initial
Catalog='mydatabase';User ID='user';Password='pwd';")
.
.
.

setup.py:(same KeyError)

from distutils.core import setup
import py2exe

setup(console=['test.pyw'],
      options = { "py2exe": { "typelibs":
[('{00000550-0000-0010-8000-00AA006D2EA4}', 0, 2, 8)]
 }
 }
 )

(Doesn't work since its not registered or need to get the

setup.py:  (same KeyError)

from distutils.core import setup
import py2exe

setup(console=['test.pyw'])


Generated error when running test.exe:

Traceback (most recent call last):
  File "test.py", line 66, in ?
  File "test.py", line 57, in main
  File "test.py", line 16, in test_status
  File "win32com\client\gencache.pyc", line 540, in EnsureDispatch
  File "win32com\client\CLSIDToClass.pyc", line 50, in GetClass
KeyError: '{00000550-0000-0010-8000-00AA006D2EA4}'


Solution:

Use a registered typelib that has ADODB.Connection functionality :)



Any suggestions...



From slick_mick_00 at hotmail.com  Fri May 27 07:31:07 2005
From: slick_mick_00 at hotmail.com (Michael)
Date: Fri, 27 May 2005 11:31:07 +0000 (UTC)
Subject: Incrementing letters
Message-ID: <d770dr$7lu$1@nwrdmz03.dmz.ncs.ea.ibs-infra.bt.com>

Hi,
I've got a string s, and i want to shift all the letters up by one, eg a->b,
b->c ........ z->a
In c++ i can do this quite simply with

if(C == 'z') C='a';
else C++;

but i can't work out how to do this this in python??

Regards

Michael




From thesamet.nospam at pythonchallenge.com  Sat May 21 07:58:08 2005
From: thesamet.nospam at pythonchallenge.com (thesamet)
Date: Sat, 21 May 2005 14:58:08 +0300
Subject: Problem: embedding Python
In-Reply-To: <1116675051.879539.116840@g43g2000cwa.googlegroups.com>
References: <1116675051.879539.116840@g43g2000cwa.googlegroups.com>
Message-ID: <d6n7l8$jol$1@news2.netvision.net.il>

mmf wrote:
> Hallo!
> 
> I tried to use Python from C like it is described in the Python
> Docmentation. So I wrote the following C source file:
> 
> #include <Python.h>
> int
> main(int argc, char *argv[])
> {
> 	Py_Initialize();
> 	PyRun_SimpleString("print 'Hallo World!'\n");
> 	Py_Finalize();
> 	return 0;
> }
> 
> I saved it as run.c and tried to compile it using the following
> command:
> gcc  run.c
> 
> But that always results in a list of errors:
> 
> /tmp/cc1tmrPU.o(.text+0x1d): In function `main':
> : undefined reference to `Py_Initialize'
> /tmp/cc1tmrPU.o(.text+0x2a): In function `main':
> : undefined reference to `PyRun_SimpleString'
> /tmp/cc1tmrPU.o(.text+0x32): In function `main':
> : undefined reference to `Py_Finalize'
> 
> What am I doing wrong? Can you help me?
> 
> Tanks.
> 
> Best regards,
> Markus
> 

You should link with Python's shared object (replace with your version 
of Python):
   gcc -o run run.c -I/usr/include/python2.4 -lpython2.4

-- 
Are you a riddle lover?
Try http://www.pythonchallenge.com


From miradan at sbcglobal.net  Tue May 10 15:33:25 2005
From: miradan at sbcglobal.net (Miradan)
Date: 10 May 2005 12:33:25 -0700
Subject: Python on Pocket PC (Strong Arm)
In-Reply-To: <d5qsqs$33k$1@solaris.cc.vt.edu>
References: <d5qsqs$33k$1@solaris.cc.vt.edu>
Message-ID: <1115753604.974000.21350@f14g2000cwb.googlegroups.com>


rbt wrote:
> I'm about to test this out on a new Dell hand held. Anyone had luck
with it?
>
> http://www.murkworks.com/Research/Python/PocketPCPython/Overview

Works just fine for me.  Running the Axim 600Mhz processor.



From fredrik at pythonware.com  Mon May  9 08:00:57 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Mon, 9 May 2005 14:00:57 +0200
Subject: New Python regex Doc
References: <1113301533.054410.203710@z14g2000cwz.googlegroups.com><mailman.1813.1113355346.1799.python-list@python.org><1113856843.023012.165500@l41g2000cwc.googlegroups.com><1113908069.264676.207090@g14g2000cwa.googlegroups.com><1115328523.852744.110390@f14g2000cwb.googlegroups.com><1115423751.016177.250650@o13g2000cwo.googlegroups.com><1115444726.627426.172260@g14g2000cwa.googlegroups.com><1115508491.462229.294020@o13g2000cwo.googlegroups.com>
	<86hdhes988.fsf@guru.mired.org>
Message-ID: <d5nj07$js0$1@sea.gmane.org>

Mike Meyer wrote:

> After doing a google for "regular expression greedy", the second match
> starts with the text:
>
>      By default, pattern matching is greedy, which means that the matcher
>      returns the longest match possible.
>
> Now, it can be argued that the term ought not to be used, except that
> it's a standard term with a well-known meaning, and exactly describes
> the behavior in question.

fwiw, judging from frequently asked questions and bug reports,
people have no problems understanding the phrase "greedy", but
they sometimes have problems understanding why "return the
longest match possible" doesn't always mean "return the overall
longest match possible"

(using the greedy modifier only applies to the given RE operator;
it doesn't modify the behaviour of other operators, or the method
used; e.g. | will still pick the *first* possible match even if one of
the alternatives use a greedy operator, search/find still scans the
target string from left to right, etc).

</F>





From philippe at philippecmartin.com  Sat May 28 14:57:19 2005
From: philippe at philippecmartin.com (Philippe C. Martin)
Date: Sat, 28 May 2005 18:57:19 GMT
Subject: Trying to understand pickle.loads withou class declaration
References: <3L2me.3465$3D6.2238@newssvr12.news.prodigy.com>
Message-ID: <ja3me.3481$4N2.2982@newssvr30.news.prodigy.com>

I confirm that all I have to do in order to successfully load a pickled
object of class A is to declare

class A:
    def __init__(self):
       pass

Although the object has tons of fields


Quid ?

Regards,

Philippe





Philippe C. Martin wrote:

> Hi,
> 
> Shuffling files around in my project, I notice I broke everything when I
> stopped declaring classes in a program that "pickled.loaded" existing
> pickled object of type "classes".
> 
> The error message being that the class(es) was unknown.
> 
> However, I _think_, I did manage to do the following in the past:
> 
> 1) pickle.dump class "test" with field "A" intialized in declaration
> 2) pickle.load class "test" and add field "B" then pickle.dumps it
> 3) pickl.load class "test" with no problem although field "B" was not
> initialized in that declaration.
> 
> 
> I have two questions:
> 
> 1) Why cannot the interpreter accept to load an object which class is not
> defined ?
> 2) assuming the above (.... I _think_ ....) is true, why then is there not
> problem in loading an object which changes dynamically.
> 
> Hope I'm making sense.
> 
> Any clue ?
> 
> Thanks,
> 
> Philippe



From sateeshkavuri at yahoo.com  Mon May 23 07:14:25 2005
From: sateeshkavuri at yahoo.com (Sateesh)
Date: Mon, 23 May 2005 11:14:25 GMT
Subject: Access lotus notes using Python
Message-ID: <lWike.155$NV3.3324@news1.nokia.com>

Hi,
Is it possible to access Lotus notes using Python? Can anyone provide me
some pointers?

Thanks
Sateesh




From spamtome at ewetel.net  Tue May 17 06:01:57 2005
From: spamtome at ewetel.net (Jacob van Iwaarden)
Date: Tue, 17 May 2005 12:01:57 +0200
Subject: Help wanted
Message-ID: <d6cfer$qmc$1@news1.ewetel.de>

Hello NG,
I'm a 59 year old Networker who was pushed to go to school for 2 years. I 
think I did it fine 'till now. But now I have to make a small project in 
Python with Y-Pages and Snakeletts. My Problem is that Python is like 
Arabian to me, and I have Time till Sunday.
My Question: is here anyone who is willing to help me by PM on this projekt? 
The teacher told us it will be approx. 50 Lines of Code.
I have to make a Webapplication wich will take Number and Title and number 
of minutes of CD's. It should be done with strings, no saving into an 
SQL-Database or so. I have to add , edit, search and show and delete Items.


Thanks in advance

Jacob 




From Serge.Orlov at gmail.com  Tue May 17 03:25:01 2005
From: Serge.Orlov at gmail.com (Serge.Orlov at gmail.com)
Date: 17 May 2005 00:25:01 -0700
Subject: python 2.3.4, cx_Oracle 4.1 and utf-8 - trouble
In-Reply-To: <d61d15$qei$2@serv.vrn.ru>
References: <d61d15$qei$2@serv.vrn.ru>
Message-ID: <1116314701.643291.103240@f14g2000cwb.googlegroups.com>

Maxim Kuleshov wrote:
> Hello!
>
> Trying to fetch long varchar2 column and get the following error:
>
> cx_Oracle.DatabaseError: column at array pos 0 fetched with error:
1406
>
> i.e. string buffer is not much enough to fetch the string.
>
> # fragment of code...
> myCon = cx_Oracle.connect(user, psw, dsn)
> myCur = myCon.cursor()
> myCur.execute("""
> select COLUMN from TABLE where ID=1
> """)
> for record in myCur.fetchall():
> # ...
>
> Error is reproduced only if actual string value longer than half of
> declared column size. For short strings all is ok.
>
> If I print myCur.description, I get:
>
> [('COLUMN', <type 'cx_Oracle.STRING'>, 250, 250, 0, 0, 1)]
>
> 250 - declared column max size, but I guess cx_Oracle allocates only
250
> bytes(!), so if my string longer than 125 chars (utf-8 national char
> occupies > 1 byte) - I get the error.
>
> Is it bug or what? Any suggestions?

Googling for "varchar2 utf-8" suggests that it's an Oracle's
feature (or issue). varchar2 is allocated in bytes. Finding
out the largest number of bytes per character is left as
an exercise :)

  Sergey.



From fredrik at pythonware.com  Fri May  6 18:36:14 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Sat, 7 May 2005 00:36:14 +0200
Subject: hard memory limits
References: <d5f9jl$k6d$1@domitilla.aioe.org>
	<86vf5w5tkz.fsf@guru.mired.org><d5g94e$8d0$1@sea.gmane.org><200505061052.28325.jstroud@mbi.ucla.edu><mailman.108.1115404168.29826.python-list@python.org>
	<86hdhg5cc1.fsf@guru.mired.org>
Message-ID: <d5gr45$258$1@sea.gmane.org>

Mike Meyer wrote:

> > So why would Apple insist on setting unusably low process limits, when
> > the others don't?
>
> You're making an unwarranted assumption here - that the OP wasn't
> creating a large process of some kind.

You need a special license to create large processes on a Mac?

I clicked on the google link that Bill posted, and noted that it wasn't
exactly something that only affected a single Python user.  If some-
thing causes problems for many different applications that run fine
on other Unix systems, it's pretty obvious that the default OS X con-
figuration isn't quite as Unixy as one would expect.

> FWIW, OS X has a Mach kernel. The failing vm_malloc call listed in the
> OP is a Mach call, not a Unix call.

So has tru64.  I've done some serious Python stuff on that platform
(stuff that included some really large processes ;-), and I never had
any allocation problems.  But of course, that system was designed
by DEC people...

</F>





From kraus at hagen-partner.de  Fri May 27 10:10:32 2005
From: kraus at hagen-partner.de (Wolfram Kraus)
Date: Fri, 27 May 2005 16:10:32 +0200
Subject: Incrementing letters
In-Reply-To: <Xns966388056EE46duncanbooth@127.0.0.1>
References: <d770dr$7lu$1@nwrdmz03.dmz.ncs.ea.ibs-infra.bt.com>
	<Xns966388056EE46duncanbooth@127.0.0.1>
Message-ID: <d779np$2dd$1@ork-un.noris.net>

Duncan Booth wrote:
> Michael wrote:
> 
> 
>>Hi,
>>I've got a string s, and i want to shift all the letters up by one, eg
>>a->b, b->c ........ z->a
>>In c++ i can do this quite simply with
>>
>>if(C == 'z') C='a';
>>else C++;
>>
>>but i can't work out how to do this this in python??
> 
> 
>>>>import string
>>>>upone = string.maketrans(
> 
>     'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ',
>     'bcdefghijklmnopqrstuvwxyzaBCDEFGHIJKLMNOPQRSTUVWXYZA')
> 
>>>>string.translate("I've got a string s....", upone)
> 
> "J'wf hpu b tusjoh t...."
> 
> 
> Note the difference though: the Python code does what you said you wanted, 
> whereas your sample code corrupts punctuation.

Wow, that's quite nice. You really learn something new every day :-)
A minor improvement: Use string.ascii_letters as the first parameter for 
string.maketrans

Wolfram


From dh47302 at yahoo.com  Tue May 10 18:17:00 2005
From: dh47302 at yahoo.com (Klaus Alexander Seistrup)
Date: Tue, 10 May 2005 22:17:00 +0000 (UTC)
Subject: A Faster Way...
References: <mailman.297.1115744017.29826.python-list@python.org>
Message-ID: <slrnd82cms.2fg.klaus@main.szn.dk>

andrea.gavana at agip.it wrote:

> If I simplify the problem, suppose I have 2 lists like:
>
> a = range(10)
> b = range(20,30)
>
> What I would like to have, is a "union" of the 2 list in a
> single tuple. In other words (Python words...):
>
> c = (0, 20, 1, 21, 2, 22, 3, 23, 4, 24, 5, 25, .....

If the order is unimportant you could use:

#v+

>>> tuple(set(range(10)) | set(range(20,30)))
(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
>>> 

#v-

Cheers,

-- 
Klaus Alexander Seistrup
Magnetic Ink, Copenhagen, Denmark
http://magnetic-ink.dk/


From jstroud at mbi.ucla.edu  Tue May 31 17:16:02 2005
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Tue, 31 May 2005 14:16:02 -0700
Subject: running tkinter
In-Reply-To: <a14ne.9382$zb.8542@trndny04>
References: <a14ne.9382$zb.8542@trndny04>
Message-ID: <200505311416.02051.jstroud@mbi.ucla.edu>

On Tuesday 31 May 2005 01:44 pm, Jim Anderson wrote:
> Are tcl/tk still supposed to be an intergrated part of the
> python release?
>
> Do I have to download, configure, make, install tcl and tk
> packages to get tkinter running?

I had to do this. Don't forget blt.

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From peter at engcorp.com  Sun May 15 09:20:44 2005
From: peter at engcorp.com (Peter Hansen)
Date: Sun, 15 May 2005 09:20:44 -0400
Subject: Range function
In-Reply-To: <1116150732.766217.258960@g47g2000cwa.googlegroups.com>
References: <1115951576.138445.51080@z14g2000cwz.googlegroups.com>
	<1116150732.766217.258960@g47g2000cwa.googlegroups.com>
Message-ID: <hdGdnZ2c1uWf0BrfRVn-gQ@powergate.ca>

Xah Lee wrote:
> Here's the Python solution.
> # implementation note: When iStep is a decimal, rounding error
> # accumulates. For example, the last item returned from
> # Range(0,18,0.3) is 17.7 not 18. A remedy is to turn iStep into a
> # fraction and do exact arithmetics, and possibly convert the result
> # back to decimal. A lesser workaround is to split the interval as to
> # do multiple smaller range and join them together.

Good lord no!  The correct way is to use an integer count and simply 
multiply it each time by the step, and add that to the range.  No 
accumulation of errors then.  Where did you learn to program?
(Rhetorical question of course, as you haven't, yet.)

> def Range(iMin, iMax=None, iStep=None):
>   if (iMax==None and iStep==None):
>     return Range(1,iMin)
>   if iStep==None:
>     return Range(iMin,iMax,1)
>   if iMin <= iMax and iStep > 0:
>     if (isinstance(iStep,int) or isinstance(iStep,long)):
>       return range( iMix, iMax, iStep)
>     else:
>       result=[];temp=iStep
>       while iMin <= iMax:
>         result.append(iMin)
>         iMin += iStep
>       return result

That's some of the worst Python code I've seen recently.  Please, no one 
take this as representative of how decent Python programmers write code.

-Peter


From gh at ghaering.de  Tue May 17 17:05:16 2005
From: gh at ghaering.de (=?ISO-8859-1?Q?Gerhard_H=E4ring?=)
Date: Tue, 17 May 2005 23:05:16 +0200
Subject: pysqlite2.dbapi2.ProgrammingError: Incorrect number of bindings
	supplied. The current statement uses 0, and there are -1 supplied.
In-Reply-To: <d6dfve$ct1$1@news.hispeed.ch>
References: <d6dfi8$ck8$1@news.hispeed.ch> <d6dfve$ct1$1@news.hispeed.ch>
Message-ID: <428A5C8C.3020404@ghaering.de>

F. GEIGER wrote:
> Arrgh, sorry for that post!
> 
>       self._dbc.execute(q, data)
> 
> where data is None, works with MySQL. For SQLite I have to write
> 
>       if data is not None:
>          self._dbc.execute(q, data)
>       else:
>          self._dbc.execute(q)

No, you have to write:

self._dbc.execute(q, (data,))

in both drivers.

i. e. the second parameter to execute *must* be a sequence. Some drivers 
(maybe MySQLdb, too) automatically correct the wrong call and transform a:

execute(sql, single_param)

into a

execute(sql, (single_param,))

for you if they notice that "!PySequence_Check(single_param)".

pysqlite 2 does not do this.

HTH,

-- Gerhard


From jstroud at mbi.ucla.edu  Sun May  8 19:29:03 2005
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Sun, 8 May 2005 16:29:03 -0700
Subject: __brace__ (PEP?)
Message-ID: <200505081629.03520.jstroud@mbi.ucla.edu>

Hello All,

If "__call__" allows anobject() and "__getitem__" allows anobject[arange], why 
not have "__brace__" (or some other, better name) for anobject{something}. 
Such braces might be useful for cross-sectioning nested data structures:

anary = [[1,2,3],[4,5,6]]

anary{2}  ==> [3,6]


or for a list of dictionaries:

alod = [{"bob":1,"ted":2,"carol":3},{"bob":4,"ted":5,"carol":6}]

alod{"ted"} ==> [2,5]


or, heck, a dictionary of lists:

adol = {"bob":[1,2,3],"carol":[4,5,6],"alice":[7,8,9]}

adol{1}  ==> {"bob":2, "carol":5, "alice":8}


Though I positively can not see what is wrong with this suggestion, I am sure 
this will raise more than a few objections. Please bash my naivete publicly 
on the list.

Some preemptive observations

1. on syntactic ambiguity (i.e. "braces already used")

  [] ==> used for both list and getitem (both for dict AND list)
  () ==> used for tuple, callable, grouping

2. on functional ambiguity (i.e. "function not implicit"):

  Q. What exactly does it mean to call an instance of class MyClass?
  A. Whatever the author of MyClass wanted it to mean.

etc.

Also, if this exists already, I apologize because I have not seen it in any 
Python code before and I wouldn't know what to call it for googling.

James


-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From bbcofchina at yahoo.com.cn  Sun May 22 23:15:06 2005
From: bbcofchina at yahoo.com.cn (=?gb2312?q?<=CE=AB=B7=BB=B7=E7=F3=DD>?=)
Date: Mon, 23 May 2005 11:15:06 +0800 (CST)
Subject: Number 1 can't use!
In-Reply-To: <mailman.432.1116774302.21603.python-list@python.org>
Message-ID: <20050523031506.1766.qmail@web15004.mail.cnb.yahoo.com>

After I installed python 2.4.1 , I found my keyborad Number  1 can't work,but ! is still working




---------------------------------
Do You Yahoo!?
150??MP3????????????
???????????????????
1G??1000???????????
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From mwm at mired.org  Thu May 26 17:24:39 2005
From: mwm at mired.org (Mike Meyer)
Date: Thu, 26 May 2005 16:24:39 -0500
Subject: Case Sensitive, Multiline Comments
References: <1117137316.140791.210430@g14g2000cwa.googlegroups.com>
Message-ID: <8664x5y92g.fsf@guru.mired.org>

"Elliot Temple" <curi42 at gmail.com> writes:

> Hi I have two questions.  Could someone explain to me why Python is
> case sensitive? I find that annoying.

Because it comes from a language background of case sensitive
languages (C, shell, etc.). But read what the BDFL has to say about
it: <URL:
http://mail.python.org/pipermail/python-list/2001-July/054788.html >

Personally, I think anyone who has two variables whose names differ
only in case should be shot. No, let me extend that - anyone who has
two variables whose names would be pronounced the same should be
shot. I've had to debug such code, and it ain't fun.

Variables whose name differs from the class they are instance of only
in case is the only allowable exception. And should be used with care.

On the same note, anyone who spells a variable name with different
cases because the languge is case-insensitive should be shot. I want
to be able to use various source analysis tools without having to
worry about dealing with two different ascii strings being names for a
single variable.

Add those two together, and you'll see that *I don't care*. I consider
taking advantage of a language being case-sensitive or
case-insensitive to be a bad idea, so it doesn't matter what the
language does.

>  Also, why aren't there
> multiline comments?  Would adding them cause a problem of some sort?

Because no one every really asked for them. After all, there are two
formats for multi-line strings, which the interpreter will build and
then discard. There are tools that recognize multi-line strings after
function/method definitions and treat them as function documentation.

Adding multiline comments probably wouldn't be a problem - you'd just
have to come up with an introductory character sequence that can't
occur in the language (not that that stopped C). But you'd have to get
someone to write the code, then someone with commit privs to decide it
was useful enough to commit. That seems to be a lot of work for very
little gain.

       <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From fredrik at pythonware.com  Thu May 12 13:35:02 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 12 May 2005 19:35:02 +0200
Subject: How "return" no return ?
References: <3ehaurF34ak0U1@individual.net><mailman.472.1115911936.29826.python-list@python.org>
	<3ehc5tF35eo3U1@individual.net>
Message-ID: <d603lj$3c1$1@sea.gmane.org>

"Ximo" wrote:

> I am doing a interpret of lines and it show me a prompt, and I want if I
> write a declaration as "int a" my progrtam return de prompt and nothing
> more, for exemple:
>
> >>> 2+2
> 4
> >>> int a
> >>>
>
> Then I'm finding that de function which execute "int a" return me nothing,
> and no
>
> >>> int a
> None
> >>>

what Python version are you using?  here's what a normal Python
interpreter is supposed to do with your example:

>>> 2+2
4
>>> int a
  File "<stdin>", line 1
    int a
        ^
SyntaxError: invalid syntax
>>>

</F>





From donn at drizzle.com  Sat May 21 01:23:03 2005
From: donn at drizzle.com (Donn Cave)
Date: Sat, 21 May 2005 05:23:03 -0000
Subject: Running a python program during idle time only
References: <1116637560.499307.28700@o13g2000cwo.googlegroups.com>
	<86y8a9xj8x.fsf@guru.mired.org>
Message-ID: <1116652981.803852@yasure>

Quoth Mike Meyer <mwm at mired.org>:
| "los" <carlos80 at gmail.com> writes:
| > I'm trying to create a program similar to that of Google's desktop that
| > will crawl through the hard drive and index files.  I have written the
| > program and as of now I just put the thread to sleep for 1 second after
| > indexing a couple of files.
| >
| > I'm wondering if anyone knows of a way that I could make so that the
| > program will run at full speed only runs after the computer has been
| > idle for a while.  I've looked at the "nice" command but that's not
| > exactly what I want.
|
| On Unix, nice is exactly the answer. It's a lot more fine-grained than
| what you're talking about, though. But it's the way things like
| setiathome manage to run continuously without interfering with normal
| usage.

Well, he could certainly try it if he hasn't already, but I wouldn't
be too surprised if it really isn't exactly what he wants.  Maybe it
depends on the scheduler, and maybe things have gotten a lot better
in that department, but from my experience a process can be niced pretty
hard and still tie up a lot of resources.  A disk crawler sounds like
a good example.

I don't have any brilliant ideas, though.  Your suggestion to use
os.getloadavg sounds good to me.  It might be kind of neat if there
were some kind of APM ioctl that would register the calling process
for notification of pending disk spin down, low power mode etc.

	Donn


From steven.bethard at gmail.com  Wed May 11 16:54:41 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Wed, 11 May 2005 14:54:41 -0600
Subject: Python Documentation (should be better?)
In-Reply-To: <mailman.399.1115844290.29826.python-list@python.org>
References: <mailman.389.1115837608.29826.python-list@python.org>	<1115839271.271071.32710@z14g2000cwz.googlegroups.com>	<mailman.393.1115840571.29826.python-list@python.org>	<1115841659.470657.33320@o13g2000cwo.googlegroups.com>
	<mailman.399.1115844290.29826.python-list@python.org>
Message-ID: <eL2dnQWPyceN7B_fRVn-1w@comcast.com>

Christopher J. Bottaro wrote:
> Contrast that with Python.  First off there is no "search" mechanism built
> into the documentation page (yes I know you can google it, but that just
> doesn't feel right).

Um, are you looking at the current documentation page?

http://docs.python.org/

In the upper right hand corner, I see a box entitled "Search:" and a 
button that says "submit".

STeVe


From rbt at athop1.ath.vt.edu  Mon May 16 10:04:23 2005
From: rbt at athop1.ath.vt.edu (rbt)
Date: Mon, 16 May 2005 10:04:23 -0400
Subject: Newbie : checking semantics
In-Reply-To: <pan.2005.05.16.13.58.07.671337@dalkescientific.com>
References: <1115503520.392357.230620@f14g2000cwb.googlegroups.com>
	<87d5rrsh7h.fsf@snobis.de>
	<pan.2005.05.16.13.58.07.671337@dalkescientific.com>
Message-ID: <d6a997$eh4$1@solaris.cc.vt.edu>

Andrew Dalke wrote:
> Stefan Nobis wrote:
> 
>>The other point is a missing (optional) statement to end blocks
>>(so you optional don't have to mark block via whitespace). IMHO
>>this comes very handy in some cases (like mixing Python and HTML
>>like in PSP). From my experience i also would say beginners have
>>quite some problems with only whitespace marking blocks (but it
>>also has some benefits).
> 
> 
> When you say "beginners" is that people with no previous
> programming experience or those who have done C/Java/etc. language
> which uses {}s?
> 
> 
> 				Andrew
> 				dalke at dalkescientific.com
> 

True beginners (no programming experience whatsoever) don't have to deal 
with unlearning stuff such as the bracket plague. So, I'd say that he's 
talking about beginners who have used other languages and who have grown 
accustomed to the bracket plague.


From superprad at gmail.com  Tue May 31 20:58:55 2005
From: superprad at gmail.com (superprad at gmail.com)
Date: 31 May 2005 17:58:55 -0700
Subject: Swig compile errors
In-Reply-To: <429d0347$1@news.eftel.com>
References: <1117583720.968040.230380@g47g2000cwa.googlegroups.com>
	<429d0347$1@news.eftel.com>
Message-ID: <1117587535.783292.325540@g47g2000cwa.googlegroups.com>

Nop No luck. That dint work.



From pdemb at gazeta.pl  Wed May 18 07:42:13 2005
From: pdemb at gazeta.pl (Peter Dembinski)
Date: Wed, 18 May 2005 13:42:13 +0200
Subject: speeding up Python script
References: <3evgolF56gtkU3@individual.net>
Message-ID: <87acms69re.fsf@hector.domek>

"Luis P. Mendes" <luis_lupe2XXX at netvisaoXXX.pt> writes:

> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> Hi,
>
> I have a 1000 line python script that takes many hours to finish.
> It is running with six inside 'for' loops.
>
> I've searched the net for ways to speed up the proccess.
>
> Psyco improves performance around 3% in this case which is not good
> enough.
>
> How can I dramatically improve speed?

You are looking for better algorithm, not for Python optimisations.

-- 
http://www.peter.dembinski.prv.pl


From steven.bethard at gmail.com  Wed May 25 16:11:42 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Wed, 25 May 2005 14:11:42 -0600
Subject: regexp for sequence of quoted strings
In-Reply-To: <1117050058.836444.189460@o13g2000cwo.googlegroups.com>
References: <1117050058.836444.189460@o13g2000cwo.googlegroups.com>
Message-ID: <cPCdnYvIIbxiRgnfRVn-1w@comcast.com>

gry at ll.mit.edu wrote:
> I have a string like:
>  {'the','dog\'s','bite'}
> or maybe:
>  {'the'}
> or sometimes:
>  {}
>
[snip]
> 
> I want to end up with a python array of strings like:
> 
> ['the', "dog's", 'bite']
> 
> Any simple clear way of parsing this in python would be
> great; I just assume that "re" is the appropriate technique.
> Performance is not an issue.


py> s = "{'the','dog\'s','bite'}"
py> s
"{'the','dog's','bite'}"
py> s[1:-1]
"'the','dog's','bite'"
py> s[1:-1].split(',')
["'the'", "'dog's'", "'bite'"]
py> [item[1:-1] for item in s[1:-1].split(',')]
['the', "dog's", 'bite']

py> s = "{'the'}"
py> [item[1:-1] for item in s[1:-1].split(',')]
['the']

py> s = "{}"
py> [item[1:-1] for item in s[1:-1].split(',')]
['']

Not sure what you want in the last case, but if you want an empty list, 
you can probably add a simple if-statement to check if s[1:-1] is non-empty.

HTH,

STeVe


From li.qj at 126.com  Mon May 30 03:37:37 2005
From: li.qj at 126.com (jerky)
Date: Mon, 30 May 2005 15:37:37 +0800
Subject: where can i find pylibpcap  module for win32?
Message-ID: <d7egmv$v10$1@mail.cn99.com>

thanks for your any imformation.




From kent37 at tds.net  Mon May 30 10:43:18 2005
From: kent37 at tds.net (Kent Johnson)
Date: Mon, 30 May 2005 10:43:18 -0400
Subject: Is pyunit still usable?
In-Reply-To: <mailman.249.1117463469.18027.python-list@python.org>
References: <mailman.249.1117463469.18027.python-list@python.org>
Message-ID: <429b2663$1_1@newspeer2.tds.net>

could ildg wrote:
> I want to know something about unittest these days,
> and since I'm learning python, I want to touch it through
> python. But when I found the newest pyunit is even so
> old, I wonder if it is still usable for current python version
> 2.4. Will you please tell me? Thank you.

unittest is a standard Python module since Python 2.1. It is a version of PyUnit.

> What are the advantages and disadvantages of unittest?
> Can somebody give me a detailed listing?

Of unittest the module or unit testing the practice?

If you mean the module, you might be interested in these articles comparing unittest, py.test and 
doctest:
http://agiletesting.blogspot.com/2005/01/python-unit-testing-part-1-unittest.html
http://agiletesting.blogspot.com/2005/01/python-unit-testing-part-2-doctest.html
http://agiletesting.blogspot.com/2005_01_01_agiletesting_archive.html

If you mean the practice, Google is your friend. Countless books and articles have been written 
about unit testing.

Kent


From steve at holdenweb.com  Fri May 27 13:21:45 2005
From: steve at holdenweb.com (Steve Holden)
Date: Fri, 27 May 2005 13:21:45 -0400
Subject: python24.zip
In-Reply-To: <x764x8gzu6.fsf@handshake.de>
References: <mailman.249.1116595092.8733.python-list@python.org>	<428e0cc3$0$29954$9b622d9e@news.freenet.de>	<x7hdgw2zqi.fsf@handshake.de>	<428F8901.5000300@jessikat.fsnet.co.uk>	<mailman.0.1116767713.21604.python-list@python.org>	<x7zmunkunt.fsf@handshake.de>	<mailman.1.1116793189.18027.python-list@python.org>
	<x764x8gzu6.fsf@handshake.de>
Message-ID: <d77kqr$dcv$1@sea.gmane.org>

Dieter Maurer wrote:
> Steve Holden <steve at holdenweb.com> writes on Sun, 22 May 2005 16:19:10 -0400:
> 
>>...
>>Indeed I have written PEP 302-based code to import from a relational
>>database, but I still don't believe there's any satisfactory way to
>>have [such a hooked import mechanism] be a first-class component of an
>>architecture that specifically requires an os.py to exist in the file
>>store during initialization.
>>
>>
>>I wasn't asking for an import hook mechanism (since I already knew
>>these to exist), but for a way to allow such mechanisms to be the sole
>>import support for certain implementations.
> 
> 
> We do not have "os.py" (directly) on the file system.
> It lives (like everything else) in a zip archive.
> 
> This works because the "zipimporter" is put on
> "sys.path_hook" before the interpreter starts executing Python code.
> 
> Thus, all you have to do: use a different Python startup
> and ensure that you special importer (able to import e.g. "os")
> is already set up, before you start executing Python code.
> 
It might help others like me if you were to document this setup, as I 
was unable to persuade the interpreter to start without producing the 
dire-sounding warning messages I mentioned in the bug report.

regards
  Steve
-- 
Steve Holden        +1 703 861 4237  +1 800 494 3119
Holden Web LLC             http://www.holdenweb.com/
Python Web Programming  http://pydish.holdenweb.com/



From steve at holdenweb.com  Tue May  3 00:56:00 2005
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 03 May 2005 00:56:00 -0400
Subject: lists in cx_Oracle
In-Reply-To: <pan.2005.05.03.04.15.54.256350@dalkescientific.com>
References: <pan.2005.04.05.18.44.52.434578@dalkescientific.com>	<pan.2005.04.30.17.02.16.988085@dalkescientific.com>	<1115047620.602263.180780@o13g2000cwo.googlegroups.com>	<pan.2005.05.02.16.33.57.959347@dalkescientific.com>	<1115056746.166202.97140@f14g2000cwb.googlegroups.com>
	<pan.2005.05.03.04.15.54.256350@dalkescientific.com>
Message-ID: <42770460.80008@holdenweb.com>

Andrew Dalke wrote:
> infidel wrote:
> 
>>I think perhaps you are asking for something that the OCI doesn't
>>provide.
> 
> 
> But it doesn't need to be supported by the OCI.
> 
> 
>>And really, it all boils down to the list comprehension:
>>
>>in_clause = ', '.join([':id%d' % x for x in xrange(len(ids))])
> 
> 
> And why can't the equivalent to that be supported in the
> DB-API interface, so I can pass in a list/tuple and have
> it just work?
> 
> 
>>... elegance is certainly subjective, and the above statement isn't the
>>cleanest ever, but it solves your main problem while avoiding the other
>>problem you mentiong (sql injection).  Seems "elegant enough" to me.
> 
> 
> The problem I mentioned is supporting inexperienced developers
> (scientists writing software without local programming support)
> who, in my experience, don't know about this pitfall and are
> more likely to use a close but wrong solution than this correct
> one.  repr(ids) is after all much easier to write.
> 
Andrew:

I cannot help but agree that a more sympathetic treatment of the various 
sequence types would help tyros and pros alike.

Do you think this is a DB-API 3-ish kind of a thing, or would it layer 
over DB-API 2 in a relatively platform-independent manner? I suspect 
that some of the code has to be inside the driver (and hence possibly at 
least partly written in C) to hook into platform-dependent features like 
quoting string literals.

but-you-may-know-better-ly y'rs  - steve
-- 
Steve Holden        +1 703 861 4237  +1 800 494 3119
Holden Web LLC             http://www.holdenweb.com/
Python Web Programming  http://pydish.holdenweb.com/



From franz2 at llnl.gov  Thu May 12 20:10:02 2005
From: franz2 at llnl.gov (Al Franz)
Date: Thu, 12 May 2005 17:10:02 -0700
Subject: suspected cPickle memory leak
Message-ID: <6.1.2.0.2.20050512170807.02550a60@mail.llnl.gov>

     I believe there is a memory leak in cPickle.  I am using python2.2.  I 
have a parallel code which uses array() and indices() from Numeric to 
massage data buffers before being sent and received by Pypar.  Pypar 
subsequently uses cPickle to pickle the data.  After many hours of 
execution, my code crashes with one of the following error messages 
(depending upon the run):

     a = zeros(shape, typecode, savespace)
MemoryError:  can't allocate memory for array

or:

     s = dumps(x, 1)
MemoryError:  out of memory

I have since modified my code to use a different data format so cPickle is 
no longer used from PyPar and now the code runs fine.

     -- Al Franz
     Computer Scientist
     Lawrence Livermore National Laboratory 




From cs_girl14 at hotmail.com  Sat May  7 10:27:55 2005
From: cs_girl14 at hotmail.com (Lily Kakm)
Date: Sat, 07 May 2005 14:27:55 +0000
Subject: Ask for a tools to protect my .pyc file :)
Message-ID: <BAY24-F2069B3D5D9D3BC8D480D1C951C0@phx.gbl>

I am sorry, may be I have not explain my mind clearly.
But I just want a tool like this : It can change the variable name into 
meaningless ones.
I know it will not be safe enough, but I need one.
So I ask for help.
Thank you !!

Robert Kern wrote:
>Lily Kakm wrote:
>>when I distribute my software, I will give the users .pyc file (maybe I 
>>can use py2exe, but I think there's no essential different), because I 
>>don't like them to know my source code.
>>
>>But actually, through .pyc file is not so directly as .py file, but the 
>>user can also easily guest the detail of the program. Because in the .pyc 
>>file, the name of the variables are exist.
>>
>>I ask you for a tool. Maybe it can hide the name of the variables.

That's not going to provide you any security. Any competent attacker
won't care what you name the variables.

If you want real security, don't distribute your code. Expose the
critical parts as a web service (or similar) instead.

If you want pretend security, .pycs or py2exe executables are enough.

>For example:
>
>good_node = 100
>bad_node = 500 - good_node
>
>Using this tool, it can be like this :
>
>xxxxxxxxxx = 100
>xxxxxxxxxy = 500 - xxxxxxxxxx
>
>It has the same function, but it can not easily be seen by the users.

Reads just fine to me.

>Do you know where to download a tool like this.

You ask an open source software community for a free tool to keep your
source proprietary? High expectations.

--
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter

_________________________________________________________________
Express yourself instantly with MSN Messenger! Download today it's FREE! 
http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/



From claudio.grondi at freenet.de  Tue May 24 14:19:29 2005
From: claudio.grondi at freenet.de (Claudio Grondi)
Date: Tue, 24 May 2005 18:19:29 -0000
Subject: searching substrings with interpositions
References: <1116926253.186047.195260@g43g2000cwa.googlegroups.com>
	<3fgekjF7lq3qU1@individual.net>
	<1116939594.958040.14110@z14g2000cwz.googlegroups.com>
Message-ID: <3fh2leF7mbtfU1@individual.net>


<borges2003xx at yahoo.it> schrieb im Newsbeitrag
news:1116939594.958040.14110 at z14g2000cwz.googlegroups.com...
> thanx everyone, is what i need.
> As Claudio argues, it's a standard problem of dna sequences
> comparation.
> the next step of my job is to make limits of lenght of interposed
> sequences (if someone can help me in this way i'll apreciate a lot)
> thanx everyone.
> giorgio
>
Note: code below is intended to help to clarify things only,
so that a bunch of examples can be tested.
If you need bugfree production quality code, maybe
someone else can provide it.

I have introduced two additional parameter to the function.
If  intMaxLenOfGap == 0  the gap size doesn't matter.
lstStartEndOfRangeOfBwithOccurenceOfA returns in its
0,1 elements the begin and end of the range strA was
found in strB.

Hope this does what you mean with
  "make limits of lenght of interposed sequences",
does it?

Claudio
P.S. Here the code:

def blnFindCharSequenceAevenIfSpreadOverEntireStringB(strA, strB,
intMaxLenOfGap = 0, lstStartEndOfRangeOfBwithOccurenceOfA = []):

  lstStartEndOfRangeOfBwithOccurenceOfA = []
  intNoOfCharsFound = 0
  intPtrToFirstCharFound = 0
  intPtrToBeginOfSubsectionOfB = 0
  intLenA = len(strA)
  intLenB = len(strB)
  blnStrAinB = False
  indxToA = 0

  while(indxToA < intLenA):
    # print chrA
    if(indxToA == 0):
      blnFoundChrA = False
      for indxToB in range(intPtrToBeginOfSubsectionOfB, intLenB):
        if(strA[indxToA] == strB[indxToB]):
          intNoOfCharsFound += 1
          # print "   ",chrA, strB[indxToB], indxToB
          intPtrToFirstCharFound = indxToB
          intPtrToBeginOfSubsectionOfB = indxToB + 1
          blnFoundChrA = True
          break
        #:if
      #:for
      if(intNoOfCharsFound == intLenA):
        blnStrAinB = True
        print "sequence '%s' found in '%s'"%(strA, strB)
        break
      #:if
      if(blnFoundChrA == False):
        break
      #:if
      indxToA += 1
    else:
      intGapLen = 0
      blnFoundChrA = False
      for indxToB in range(intPtrToBeginOfSubsectionOfB, intLenB):
        if(strA[indxToA] == strB[indxToB]):
          intNoOfCharsFound += 1
          # print "   ",chrA, strB[indxToB], indxToB
          intPtrToBeginOfSubsectionOfB = indxToB + 1
          blnFoundChrA = True
          break
        #:if
        intGapLen += 1
        if(intMaxLenOfGap > 0 and intGapLen > intMaxLenOfGap):
          indxToA = 0
          blnFoundChrA = False
          intPtrToBeginOfSubsectionOfB = intPtrToFirstCharFound + 1
          intNoOfCharsFound = 0
          break
        #:if
      #:for
      if(intNoOfCharsFound == intLenA):
        blnStrAinB = True
        print "sequence '%s' found in '%s' at range(%i, %i)"%(strA, strB,
intPtrToFirstCharFound, indxToB+1)
        lstStartEndOfRangeOfB.append(intPtrToFirstCharFound)
        lstStartEndOfRangeOfB.append(indxToB+1)
        break
      #:if
      if(blnFoundChrA == False):
        break
      #:if
      indxToA += 1
    #:if/else
  #:while
  if  blnStrAinB == False:
    if(intMaxLenOfGap > 0 and intGapLen > intMaxLenOfGap):
      print "sequence '%s' not in '%s' (maybe allowed gap of %i chars was
too small?)"%(strA, strB, intMaxLenOfGap)
    else:
      print "sequence '%s' not in '%s'"%(strA, strB)
  #:if
#:def

print

lstStartEndOfRangeOfB = []
strA = "0101"
strB = "000011110100"
blnFindCharSequenceAevenIfSpreadOverEntireStringB(strA, strB)

lstStartEndOfRangeOfB = []
strA = "0101"
strB = "000011110100"
blnFindCharSequenceAevenIfSpreadOverEntireStringB(strA, strB, 2)

strA = "010101"
strB = "000011110100"
blnFindCharSequenceAevenIfSpreadOverEntireStringB(strA, strB, 6,
lstStartEndOfRangeOfB)

strA = "010101"
strB = "00001111010000001"
blnFindCharSequenceAevenIfSpreadOverEntireStringB(strA, strB, 4,
lstStartEndOfRangeOfB)

strA = "010101"
strB = "00001111010000001"
blnFindCharSequenceAevenIfSpreadOverEntireStringB(strA, strB, 5,
lstStartEndOfRangeOfB)
print
print "usage of lstStartEndOfRangeOfB parameter passed to function for use
as return value:"
print "sequence '%s' was found in '%s' at range(%i, %i)"%(strA, strB,
lstStartEndOfRangeOfB[0], lstStartEndOfRangeOfB[1])




From martin at v.loewis.de  Sun May 22 15:24:41 2005
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Sun, 22 May 2005 21:24:41 +0200
Subject: python24.zip
In-Reply-To: <x7vf5bku5d.fsf@handshake.de>
References: <mailman.249.1116595092.8733.python-list@python.org>
	<428e0cc3$0$29954$9b622d9e@news.freenet.de>
	<x7hdgw2zqi.fsf@handshake.de>
	<428faddd$0$26322$9b622d9e@news.freenet.de>
	<x7vf5bku5d.fsf@handshake.de>
Message-ID: <4290dc79$0$9989$9b622d9e@news.freenet.de>

Dieter Maurer wrote:
> Really?
> 
> Is the interpreter unable to call "C" functions ("stat" for example)
> to determine whether an object exists before it puts it on "path".

What do you mean, "unable to"? It just doesn't.

Could it? Perhaps, if somebody wrote a patch.
Would the patch be accepted? Perhaps, if it didn't break something
else.

In the past, there was a silent guarantee that you could add
items to sys.path, and only later create the directories behind
these items. I don't know whether people rely on this guarantee.

> The application was Zope importing about 2.500 modules
> from 2 zip files "zope.zip" and "python24.zip".
> This resulted in about 12.500 opens -- about 4 times more
> than would be expected -- about 10.000 of them failing opens.

I see. Out of curiosity: how much startup time was saved
when sys.path was explicitly stripped to only contain these
two zip files?

I would expect that importing 2500 modules takes *way*
more time than doing 10.000 failed opens.

Regards,
Martin


From dalke at dalkescientific.com  Thu May 12 12:21:38 2005
From: dalke at dalkescientific.com (Andrew Dalke)
Date: Thu, 12 May 2005 16:21:38 GMT
Subject: urllib download insanity
References: <mailman.434.1115876884.29826.python-list@python.org>
Message-ID: <pan.2005.05.12.16.21.37.64449@dalkescientific.com>

Timothy Smith wrote:
> ok what i am seeing is impossible.
> i DELETED the file from my webserver, uploaded the new one. when my app 
> logs in it checks the file, if it's changed it downloads it. the 
> impossible part, is that on my pc is downloading the OLD file i've 
> deleted! if i download it via IE, i get the new file. SO, my only 
> conculsion is that urllib is caching it some where. BUT i'm already 
> calling urlcleanup(), so what else can i do?

Here are some ideas to use in your hunt.

 - If you are getting a cached local file then the returned object
will have a "name" attribute.

   result = urllib.retrieve(".....")
   print result.fp.name

As far as I can tell, this will only occur if you use
a tempcache or a file URL.


  - You can force some debugging of the open calls, to see if
your program is dealing with a local file.

>>> old_open = open
>>> def my_open(*args):
...   print "opening", args
...   return old_open(*args)
... 
>>> open("/etc/passwd")    
<open file '/etc/passwd', mode 'r' at 0x60da0>
>>> import __builtin__
>>> __builtin__.open = my_open
>>> open("/etc/passwd")
opening ('/etc/passwd',)
<open file '/etc/passwd', mode 'r' at 0x60c20>
>>> 

You'll may also need to change os.fdopen because that's used
by retrieve if it needs a tempfile.

If you want to see where the open is being called from,
use one of the functions in the traceback module to print
the stack trace.

  - for surety's sake, also do 

import webbrowser
webbrowser.open(url)

just before you do 

urllib.retrieve(url, filename)

This will double check that your program is using the URL you
expect it to use.

  - beyond that, check that you've got network activity,

You could check the router lights, or use a web sniffer like
ethereal, or set up a debugging proxy

  - check the headers.  If your ISP is using a cache then
it might insert a header into what it returns.  But if
it was caching then your IE view should have seen the cached
version as well.

				Andrew
				dalke at dalkescientific.com
 


From ionel.mc at gmail.com  Sun May 22 13:18:45 2005
From: ionel.mc at gmail.com (ionel)
Date: Sun, 22 May 2005 19:18:45 +0200
Subject: first release of PyPy
In-Reply-To: <7x64xc10pl.fsf@ruckus.brouhaha.com>
References: <mailman.304.1116724468.8733.python-list@python.org>
	<7x64xc10pl.fsf@ruckus.brouhaha.com>
Message-ID: <b322b4e605052210184db964ba@mail.gmail.com>

this is interesting 
anyway i'm to lazy to read so i'll just ask:
can PyPy at the current state of develepment help me improve my python 
programs? (speed)

-- 
ionel.
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From http  Fri May 27 08:49:49 2005
From: http (Paul Rubin)
Date: 27 May 2005 05:49:49 -0700
Subject: write to the same file from multiple processes at the same time?
References: <e3617$429713d7$3eb01f24$9096@news.flashnewsgroups.com>
Message-ID: <7xwtpkrfyq.fsf@ruckus.brouhaha.com>

gabor <gabor at nekomancer.net> writes:
> so, how does one synchronizes several processes in python?
> 
> first idea was that the cgi will create a new temp file every time,
> and at the end of the stress-test, i'll collect the content of all
> those files. but that seems as a stupid way to do it :(

There was a thread about this recently ("low-end persistence
strategies") and for Unix the simplest answer seems to be the
fcntl.flock function.  For Windows I don't know the answer.
Maybe os.open with O_EXCL works.



From curi42 at gmail.com  Thu May 26 02:14:19 2005
From: curi42 at gmail.com (curi42 at gmail.com)
Date: 25 May 2005 23:14:19 -0700
Subject: Strange Execution Times
Message-ID: <1117088059.588457.200270@z14g2000cwz.googlegroups.com>

I am running two functions in a row that do the same thing.  One runs
in .14 seconds, the other 56.  I'm confused.  I wrote another version
of the program and couldn't get the slow behavior again, only the fast.
 I'm not sure what is causing it.  Can anyone figure it out?

Here is my code (sorry it's a bit of a mess, but my cleaned up version
isn't slow!).  Just skim to the bottom where the timing is.  The first
time printed out is .14, the seond is 56.56.


f = open("/Users/curi/data.xml")


o = open("/Users/curi/out2.xml", "w")


import md5
import array


p1 = "<Password>"
p2 = "</Password>"

cnt = 0

m = md5.new
jo = "".join


adjust = len(p1) - 1

i = 1
s = f.read()
a = array.array('c', s).tolist()
spot = 0
k = 0
find = s.find

starts = []
ends = []

while k != -1:

    #print len(s)
    k = find(p2, spot)
    if k != -1:
        starts.append(find(p1, spot) + adjust)
        ends.append(k)
        spot = k + 1

    #s = "".join([s[:j+1], md5.new(s[j+1:k-1]).hexdigest(), s[k:]])

    #if k != -1: a[j+1:k-1] = m(jo(a[j+1:k-1])).hexdigest()



r = range(len(starts))
#r = range(20)
r.reverse()
import time


data = a[:]

md5 = m
join = jo





t1 = time.clock()
for j in r:
    #print jo(s[starts[j]+1:ends[j]])
    digest = m(jo(s[starts[j]+1:ends[j]])).hexdigest()

    a[starts[j]+1:ends[j]] = digest
    #cnt += 1
    #if cnt % 100 == 0: print cnt


t2 = time.clock()
print "time is", round(t2-t1, 5)



t1 = time.clock()
for i in r:
    data[starts[i]:ends[i]] =
md5(join(s[starts[i]:ends[i]])).hexdigest()
t2 = time.clock()
print "second time is", round(t2-t1, 5)


o.write(jo(a))



From Tommy.Ryding at gmail.com  Tue May 24 05:00:57 2005
From: Tommy.Ryding at gmail.com (Tommy.Ryding)
Date: 24 May 2005 02:00:57 -0700
Subject: Static binding
Message-ID: <1116925257.450758.206130@g47g2000cwa.googlegroups.com>

Is it possible to use SWIG generated wrapper files when I want to
statically bind my extentions?

//Tommy



From fredrik at pythonware.com  Sun May 15 02:00:47 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Sun, 15 May 2005 08:00:47 +0200
Subject: A new to Python question
References: <1116088663.428932.130860@g43g2000cwa.googlegroups.com><rfnhl2-ig5.ln1@Bernd.Nawothnig.dialin.t-online.de><1116093118.599403.35940@g14g2000cwa.googlegroups.com><tsKdnfF2xaKu3BvfRVn-iQ@comcast.com>
	<1116102355.715816.192840@z14g2000cwz.googlegroups.com>
Message-ID: <d66oi3$3j0$1@sea.gmane.org>

M.E.Farmer wrote:

> I said exactly what I meant, the parentheses around the values creates
> a tuple that you have no reference to!

repeating it doesn't make you right; no extra tuple is created, and the
parens are part of the syntax:

    If the target is a target list enclosed in parentheses or in square
    brackets: The object must be a sequence with the same number
    of items as there are targets in the target list, and its items are
    assigned, from left to right, to the corresponding targets.

    http://docs.python.org/ref/assignment.html

(originally, you had to use [] to unpack lists, and () or no parens only
worked for tuples.  the ability to use an arbitrary sequence was added
in 1.5)

on the other hand, the function you're calling in this example *does*
create a tuple that you have no reference to after the assignment.
that doesn't matter, of course, since the tuple is removed by the
garbage collector immediately after it has been unpacked.

</F>





From newsgroups at jhrothjr.com  Sat May 21 08:46:37 2005
From: newsgroups at jhrothjr.com (John Roth)
Date: Sat, 21 May 2005 06:46:37 -0600
Subject: first release of PyPy
References: <mailman.264.1116625088.8733.python-list@python.org><1116629407.638782.145950@g47g2000cwa.googlegroups.com><1116644536.741250.249860@g44g2000cwa.googlegroups.com><mailman.279.1116649250.8733.python-list@python.org><1116653460.808204.74460@g43g2000cwa.googlegroups.com><87mzqpytep.fsf@wilson.rwth-aachen.de><7xfywhxerd.fsf@ruckus.brouhaha.com>
	<87is1dyru8.fsf@wilson.rwth-aachen.de>
Message-ID: <118ubdg3lt2cjd0@news.supernews.com>

"Torsten Bronger" <bronger at physik.rwth-aachen.de> wrote in message 
news:87is1dyru8.fsf at wilson.rwth-aachen.de...
> Hall?chen!
>
> Paul Rubin <http://phr.cx at NOSPAM.invalid> writes:
>
>> Torsten Bronger <bronger at physik.rwth-aachen.de> writes:
>>
>>> Please could somebody explain to us non-CS people why PyPy could
>>> have speed features CPython can't have?
>>
>> Does the one-word answer "compiler" explain enough?
>
> No, just more questions.  ;-)
>
> What's supposed to be compiled?  Only PyPy itself or also the
> programs it's "interpreting"?

To be more specific, the (possible) speed increase will come
from JIT (Just In Time) compilation technology. JIT technology
is quite capable of handling dynamic languages. That has to
come after they get a compilable interpreter working, but I
believe it was in the original project vision statement.

A JIT compiler within the interpreter will put PyPy pretty
much on a par with Java as far as speed goes.

> <http://www.python.org/pycon/dc2004/papers/27/>: "In the next step
>    of the project, we will generate C code or machine code from the
>    source of Pypy, thereby reducing the speed penalty."
>
> I've been told by so many books and on-line material that Python
> cannot be compiled (unless you cheat).  So how is this possible?

JIT compilers cheat. Specifically, they compile for the observed
object environment of a statement, and then insert a test to make
sure that the actual environment matches the expected environment.
If it doesn't, it goes back to interpretation for that code segment.

John Roth
>
> Tsch?,
> Torsten.
>
> -- 
> Torsten Bronger, aquisgrana, europa vetus 



From fredrik at pythonware.com  Tue May 24 16:38:05 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 24 May 2005 22:38:05 +0200
Subject: Is Python suitable for a huge, enterprise size app?
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com><1116432325.497438.64580@g49g2000cwa.googlegroups.com><1116433218.495131.71260@g49g2000cwa.googlegroups.com><1116440427.255902.36260@g49g2000cwa.googlegroups.com><mailman.194.1116489874.8733.python-list@python.org>
	<x7wtptmzkl.fsf@handshake.de>
Message-ID: <d70387$fnr$1@sea.gmane.org>

Dieter Maurer wrote:

> Could you elaborate a bit?
>
> Large peak memory use means that the application got a large
> address space. What garantees that the residual memory use
> (after the peak) is compact and not evenly spread across
> the address space.

nothing guarantees that, of course.  but I've never seen that
happen. and I'm basing my comments on observed behaviour in
real systems, not on theoretical worst-case scenarios.  every
time I've seen serious fragmentation, it's been related to leaks,
not peak memory usage.

</F>





From phark52 at yahoo.com  Sun May  1 13:03:11 2005
From: phark52 at yahoo.com (fooooo)
Date: 1 May 2005 10:03:11 -0700
Subject: Multiple threads in a GUI app (wxPython),
	communication between worker thread and app?
Message-ID: <1114966991.337599.194500@f14g2000cwb.googlegroups.com>

This is a network app, written in wxPython and the socket module. This
is what I want to happen:

GUI app starts. User clicks a button to 'start' the work of the app.
When start is pressed, a new thread is spawned (threading module) and
this thread starts listening for data on a socket. When someone
connects, a new thread is spawned, It needs to do I/O on that socket
and open a GUI window so the user can communicate with the client
(socket) that just connected. Any further data that comes in on that
socket should be redirected to the newly opened GUI window. Any more
connection attempts will open a new GUI window and the same cycle
repeats.

How would I get the worker thread to open a GUI window in the main GUI
thread? After that GUI window is open, how can I send and recv messages
from/to the GUI window?



From steven.bethard at gmail.com  Sat May 21 13:24:18 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Sat, 21 May 2005 11:24:18 -0600
Subject: count files in a directory
In-Reply-To: <d6nojv$8ne$1@solaris.cc.vt.edu>
References: <d6m5e1$cr7$1@solaris.cc.vt.edu>
	<d6m8nc$i4v$2@solaris.cc.vt.edu>	<200505202125.03838.jstroud@mbi.ucla.edu>
	<mailman.282.1116657937.8733.python-list@python.org>
	<d6nojv$8ne$1@solaris.cc.vt.edu>
Message-ID: <6sydnV96GrVZ8xLfRVn-tQ@comcast.com>

rbt wrote:
> Heiko Wundram wrote:
>>>>> import os
>>>>> path = "/home/heiko"
>>>>> file_count = sum((len(f) for _, _, f in os.walk(path)))
>>>>> file_count
> 
> Thanks! that works great... is there any significance to the underscores 
> that you used? I've always used root, dirs, files when using os.walk() 
> do the underscores make it faster... or more efficient?

No, they don't make any semantic difference; they work just like any 
other identifier.  It's just that, by convention, single underscores 
indicate that we don't care what values these names are bound to.  So in 
the example above, Heiko indicates that we don't care about what you 
would normally call 'root' and 'dirs'.

HTH,

STeVe


From flamesrock at gmail.com  Mon May  2 16:14:02 2005
From: flamesrock at gmail.com (flamesrock)
Date: 2 May 2005 13:14:02 -0700
Subject: python+windows/linux -> write stdout text to always on top text?
Message-ID: <1115064842.454916.305970@f14g2000cwb.googlegroups.com>

Hi,

I'm curious if theres a way in python to write stdout text to the
screen (ie top right) the way they do in some FPS games, so that its
always on top, in an invisible window of some set dimensions. No matter
what program is on top.

Is there a way to make it cross platform?

I've looked but nothing seems to turn up on the subject.

-thanks in advance.



From flyaflya at gmail.com  Tue May 10 06:02:28 2005
From: flyaflya at gmail.com (flyaflya)
Date: Tue, 10 May 2005 18:02:28 +0800
Subject: why this happend using model random?
Message-ID: <d5q0ro$5lb$1@news.yaako.com>

from random import *

col = [0 for i in range(10)]
a = [col for  i in range(10)]

seed()
for i  in range(10):
     for j in  range(10):
         a[i][j] = randint(0, 100)
print a

the result is:
[[78, 65, 35, 5, 68, 60, 1, 51, 81, 70],
[78, 65, 35, 5, 68, 60, 1, 51, 81, 70],
[78, 65, 35, 5, 68, 60, 1, 51, 81, 70], .....]
why result isn't true random?
but when the code like this:
from random import *
seed()
for i  in range(10):
     for j in  range(10):
         print randint(0, 100)
the result  is true random, what's deffient between these two segment codes?


From nowhere at nothing.com  Sat May 28 23:29:03 2005
From: nowhere at nothing.com (Lurker)
Date: Sun, 29 May 2005 15:29:03 +1200
Subject: Intellisense and the psychology of typing
References: <1117125072.825389.74190@g47g2000cwa.googlegroups.com>
	<Td2dndb_0ehebwrfRVn-oA@speakeasy.net>
Message-ID: <0Fame.3732$U4.528498@news.xtra.co.nz>

"James D Carroll" <jamesdcarroll at hotmail.com> wrote in message
news:Td2dndb_0ehebwrfRVn-oA at speakeasy.net...

> if I have to type 'boolean' instead of  'boo<tab>' I get real cranky real
fast.

Why? Is your programming speed really limited by the difference
between typing "lean" and hitting <tab>? If typing speed is
the limitation - go get some touch-typing courses.




From doodle4 at gmail.com  Thu May 19 16:02:20 2005
From: doodle4 at gmail.com (ashtonn@gmail.com)
Date: 19 May 2005 13:02:20 -0700
Subject: store mac address
Message-ID: <1116532940.490324.122160@f14g2000cwb.googlegroups.com>

Hello,
I am trying to fill an array with source and destination mac address.
The first 6 bytes hold the destination mac address and the next six
bytes hold the source mac address. Here's a snippet for filling in
broadcast address for the destination mac.

# Get destination address
data = array('B', '\0' * 512)
for i in range(6):
    data[i] = 0xFF

How do i fill in a command line passed mac address for both source and
destination(default is FFFFFFFFFFFF). The first six bytes of data[i]
should contain destination mac and the next six bytes of data[i] should
contain the source mac address.

Thanks,
Ashton



From bearophileHUGS at lycos.com  Tue May 10 11:42:56 2005
From: bearophileHUGS at lycos.com (bearophileHUGS at lycos.com)
Date: 10 May 2005 08:42:56 -0700
Subject: Merging overlapping spans/ranges
In-Reply-To: <4280b31b$0$198$edfadb0f@dread12.news.tele.dk>
References: <4280b31b$0$198$edfadb0f@dread12.news.tele.dk>
Message-ID: <1115739776.439549.188010@o13g2000cwo.googlegroups.com>

This is the problem of finding the connected components inside an
interval graph. You can implement the algorithms yourself, of you can
use my graph data structure here:

http://sourceforge.net/projects/pynetwork/

The graph methods:
createIntervalgGraph
And:
connectedComponents
can probably solve your problem quite fast, algorithmically, and with
few lines of code.
If you need more help, then ask for it and I'll give the little code
needed.

Bear hugs,
Bearophile



From harlinseritt at yahoo.com  Sun May  8 06:29:33 2005
From: harlinseritt at yahoo.com (Harlin Seritt)
Date: 8 May 2005 03:29:33 -0700
Subject: Active Directory Modules?
Message-ID: <1115548173.613128.33120@g14g2000cwa.googlegroups.com>

Does anyone know if there are any Python Active Directory Modules out
there? I looked at LDAP module but there is no version for Python 2.4
and it's support for Active Directory seems to be lacking a bit.

Thanks,

Harlin Seritt



From vcsekhar007 at yahoo.com  Sat May  7 02:39:57 2005
From: vcsekhar007 at yahoo.com (V.C.Sekhar)
Date: Sat, 07 May 2005 06:39:57 -0000
Subject: Array programming
Message-ID: <d5hnrt+lss2@eGroups.com>

Hi there,
   I couldnt get to do the following task using Python. Can some pls 
suggest me a way to do this.

I have an array with duplicate strings filled in it. Now am looking for 
a way to extract only the DISTINCT Values from that array.

Could some one pls help me out.

Thanks in advance,
Sekhar




From fredrik at pythonware.com  Tue May 17 10:42:38 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 17 May 2005 16:42:38 +0200
Subject: Image.putpalette(Colors)?
References: <d6cl5u$mas$05$1@news.t-online.com>
Message-ID: <d6cvrr$e5q$1@sea.gmane.org>

Oliver Albrecht wrote:

> Has somebody a example-script how i can put a other palette to a image?

here's one of the first google hits for "PIL putpalette":

    http://effbot.org/zone/pil-pseudocolor.htm

> (after this the image should have similar outlook)

similar to what?

</F> 





From ccurvey at gmail.com  Wed May 11 20:47:14 2005
From: ccurvey at gmail.com (Chris Curvey)
Date: 11 May 2005 17:47:14 -0700
Subject: win32com Dispatch() and SetPriorityClass()
Message-ID: <1115858834.244312.130110@g43g2000cwa.googlegroups.com>

if I'm using Dispatch() to manage a COM object (IE), is there a way to
get ahold of the process handle so that I can bump it's priority?



From rijishvr at rediffmail.com  Mon May  2 03:45:00 2005
From: rijishvr at rediffmail.com (rijish valoorthodi rajan)
Date: 2 May 2005 07:45:00 -0000
Subject: No subject
Message-ID: <20050502074500.2455.qmail@webmail35.rediffmail.com>

  
hello all
I am a member of a team dedicated to make a client server database application and our main concern is the speed with which the system performs. we are very new to python. but after reading a lot of documents and consulting some experts we decided to work it out using PYTHON. we plan to make 2 programs one running in the client systems and one that run in server. can any one please help me by telling the thins that i should take care of while designing the project and what tools and what style we should adopt to make the program optimised.

regards
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From arserlom at gmail.com  Sat May 14 09:41:34 2005
From: arserlom at gmail.com (arserlom at gmail.com)
Date: 14 May 2005 06:41:34 -0700
Subject: A question about inheritance
In-Reply-To: <2tudnU9xaaG2DePfRVn-1A@comcast.com>
References: <1115579277.999256.269960@f14g2000cwb.googlegroups.com>
	<2tudnU9xaaG2DePfRVn-1A@comcast.com>
Message-ID: <1116078094.565174.234940@z14g2000cwz.googlegroups.com>

Ok, thanks. I didn't know about new-style classes (I had learned python
from a book prior to them).

After reading about new-style classes, I find that your solution is
better because, using super (in general) avoids cl2 from having to know
the implementation details of cl1. This is  clearly explained in:

http://www.python.org/2.2.3/descrintro.html#cooperation

Also, when using new-style classes with IDLE, I found some problems
which I talk about in "Modifying CallTips.py to work with with
new-style classes in IDLE.", which I posted in this group.

Steven Bethard wrote:
> arserlom at gmail.com wrote:
> > Hello I have a question about inheritance in Python. I'd like to do
> > something like this:
> >
> >  class cl1:
> >   def __init__(self):
> >    self.a = 1
> >
> >  class cl2(cl1):
> >   def __init__(self):
> >    self.b = 2
> >
> > But in such a way that cl2 instances have atributes 'b' AND 'a'.
> > Obviously, this is not the way of doing it, because the __init__
> > definition in cl2 overrides cl1's __init__.
> >
> > Is there a 'pythonic' way of achieving this?
>
> If there's a chance you might have multiple inheritance at some point
in
> this hierarchy, you might also try using super:
>
> class cl1(object): # note it's a new-style class
>      def __init__(self):
>          self.a = 1
>
> class cl2(cl1):
>      def __init__(self):
>          super(cl2, self).__init__()
>          self.b = 2
>
> Note that you probably want a new-style class even if you chose not
to
> use super in favor of Jp Calderone's suggestion.  There are very few
> cases for using old-style classes these days.
> 
> STeVe



From tonino.greco at gmail.com  Tue May 17 10:22:35 2005
From: tonino.greco at gmail.com (Tonino)
Date: 17 May 2005 07:22:35 -0700
Subject: best way to do this ...
In-Reply-To: <pan.2005.05.17.14.18.32.560989@thomas-guettler.de>
References: <1116332775.964419.168370@o13g2000cwo.googlegroups.com>
	<pan.2005.05.17.14.18.32.560989@thomas-guettler.de>
Message-ID: <1116339755.240688.109380@g44g2000cwa.googlegroups.com>

hmm - but I want to store the data in memory eather than a filesystem
... it is not an issue if the program terminates - it is almost needed
while running and does not need to remember where it is ..

the dirctionary is detail = {}

will try the list() function - thanks

Tonino



From grante at visi.com  Thu May 26 11:15:30 2005
From: grante at visi.com (Grant Edwards)
Date: Thu, 26 May 2005 15:15:30 -0000
Subject: Automatically populate and submit HTML Forms
References: <d72h34$2is$1@solaris.cc.vt.edu>
Message-ID: <119bq0i5r14li9d@corp.supernews.com>

On 2005-05-25, rbt <rbt at athop1.ath.vt.edu> wrote:
> How can I make a python client script connect to a Web server and 
> automatically populate form fields and then submit the form?
>
> For example, say I wanted to check and see if 1924 was a leap year... 
> how would I populate the 'year' field and then submit it for processing? 
> I have no control of the server... just the client script.
>
><form action="cgi-bin/leapyear.py">
>  <p>Enter a year and find out if it's a leap year:
>  <input type="text" name="year" size="6">
>  <input type="submit">
>  <input type="reset">
></form>

Just use urllib() and pass the form data to the urlopen()
method.  If given data, it will generate a "POST" request
instead of a "GET".  Here's a snippet of code from an app of
mine that "fills in a form" and submits it:

    postData = urllib.urlencode({'submit':'Remove','disp':'M','action':'change_Msgs'})
    
    for msgid in msgIDs:
        postData += "&msgid="+msgid

    req2 = urllib2.Request("http://mc-s6.postini.com/exec/MsgCtr",postData)
    rsp2 = ClientCookie.urlopen(req2)

In this code I've eyeballed the form and the field names are
hard-wired into the code.  If your form doesn't change from one
usage to the next, that's the simplest way to do it.

In my example I'm using ClientCookie and urllib2 to create/open
the reqeust in two steps because the request seen above won't
work without some cookie values previsouly established in code
that I've snipped.  Otherwise all you'd need to do is something
like this:

  urllib.urlopen('http://whatever',
                  urllib.urlencode({'field1Name':'value1','field2Name':'value2'}))
                  
-- 
Grant Edwards                   grante             Yow!  Yes, but will I
                                  at               see the EASTER BUNNY in
                               visi.com            skintight leather at an
                                                   IRON MAIDEN concert?


From kay.schluehr at gmx.net  Sat May 21 04:33:48 2005
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: 21 May 2005 01:33:48 -0700
Subject: first release of PyPy
In-Reply-To: <mailman.285.1116663550.8733.python-list@python.org>
References: <mailman.264.1116625088.8733.python-list@python.org>
	<1116629407.638782.145950@g47g2000cwa.googlegroups.com>
	<1116644536.741250.249860@g44g2000cwa.googlegroups.com>
	<mailman.279.1116649250.8733.python-list@python.org>
	<1116653460.808204.74460@g43g2000cwa.googlegroups.com>
	<87mzqpytep.fsf@wilson.rwth-aachen.de>
	<mailman.285.1116663550.8733.python-list@python.org>
Message-ID: <1116664428.505172.245270@g14g2000cwa.googlegroups.com>


Shane Hathaway wrote:

> Now people are experimenting with high level compilers written in
high level
> languages.  Where will this pattern lead?  Who knows. :-)

Drift from old Europe ( greek Pythons ) to old India to "Nagas" and
other snake-beings and goddesses :-)

http://www.khandro.net/mysterious_naga.htm#many-headed

Regards,
Kay



From phark52 at yahoo.com  Mon May  2 22:26:48 2005
From: phark52 at yahoo.com (fooooo)
Date: 2 May 2005 19:26:48 -0700
Subject: Multiple threads in a GUI app (wxPython),
	communication between worker thread and app?
In-Reply-To: <1114986451.990217.148570@f14g2000cwb.googlegroups.com>
References: <1114966991.337599.194500@f14g2000cwb.googlegroups.com>
	<1114986451.990217.148570@f14g2000cwb.googlegroups.com>
Message-ID: <1115087208.889987.195470@o13g2000cwo.googlegroups.com>

Thanks for the replies. I have a Queue object in the main GUI thread,
this gets passed to all the worker threads and they add items to it.
This is all well and good, but what is a good way to get the GUI thread
to send items back to the worker threads?



From edvard+news at majakari.net  Mon May 16 03:14:13 2005
From: edvard+news at majakari.net (Edvard Majakari)
Date: Mon, 16 May 2005 10:14:13 +0300
Subject: Safe eval, or how to get list from string
References: <1115999726.286709.140690@f14g2000cwb.googlegroups.com>
Message-ID: <87mzqvd4my.fsf@titan.staselog.com>

bwooster47 at gmail.com writes:

> I've to use ConfigParser.
>
> It returns values that are exactly in the config file, so get string
> variables like:
> int1 with quotes and characers: "42"
> this is easy to convert to int:
> realint = int(int1)

There's already a method getint() for that, you can just say

cfgparser.getint('section', 'int1')

> if there is list1 = "[ 'filea', 'fileb', ]", I can get at list by
> doing:
> reallist = eval(list1)

Are you sure you need to use ConfigParser for that? If you need to have
persistent Python data structures, I'd suggest marshalling data and using
(c)Pickle or similar.

-- 
# Edvard Majakari		Software Engineer
# PGP PUBLIC KEY available    	Soli Deo Gloria!

"Debugging is twice as hard as writing the code in the firstplace. Therefore,
 if you write the code as cleverly as possible, you are, by definition,
 not smart enough to debug it."  -- Brian W. Kernighan


From dreamingpython at 163.com  Thu May 19 22:04:39 2005
From: dreamingpython at 163.com (ÒÊÃÉɽÈË)
Date: Fri, 20 May 2005 10:04:39 +0800
Subject: how to config a comserver in a customize dll?
Message-ID: <d6jgd1$l6h$1@sea.gmane.org>

When i use the below code to create a comserver on Windows OS??i find that
the com was configed in the file
python23com.dll,why? if i want to config it in my customize dll,how should i
do? thks

class TestPythonCom:
    _public_methods_ = [ 'SplitString' ]
    _reg_progid_ = "TestPythonCom.Application"
    # NEVER copy the following ID
    # Use "print pythoncom.CreateGuid()" to make a new one.
    _reg_clsid_ = "{93D78ABA-1F6C-4B1C-97C7-C3700511415A}"

    def SplitString(self, val):
        return val





From tlviewerSHRUB at yahooCHENEY.com  Thu May  5 23:30:47 2005
From: tlviewerSHRUB at yahooCHENEY.com (tlviewer)
Date: Fri, 06 May 2005 03:30:47 GMT
Subject: win32: structured storage
Message-ID: <HxBee.23620$R46.6537@tornado.socal.rr.com>

hello,

In honor of the chm exploit that I got hit by last week, I trying
to code some ActivePython to list the directory inside a CHM.

CHM is supposed to be structured storage (ITSF). If a given CHM
file is infected it most likely has an embedded EXE file -- mine
had one called [Open.exe].

The following code works for Excell sheets, XLS, but fails for
CHM files.

# begin python
from win32com import storagecon as sc
import os, win32api  
import pythoncom as pyc  
from pywintypes import IID

its_clsid = IID('{5d02926a-212e-11d0-9df9-00a0c922e6ec}')
its_iid= IID('{88cc31de-27ab-11d0-9df9-00a0c922e6ec}')
# 
pyc.CoInitialize() 

# commented out after failing on my Win2k box 
#pyc.CoCreateInstance( its_clsid,None,pyc.CLSCTX_INPROC_SERVER, its_iid)
m = sc.STGM_READ | sc.STGM_SHARE_EXCLUSIVE

# quarantined CHM virus
fname = "e:/batch/junkx.chm" 
#fname = "C:/Documents and Settings/Administrator/My Documents/02_taxes.xls"
pss = pyc.StgOpenStorageEx( fname, m, sc.STGFMT_STORAGE,0, pyc.IID_IStorage)    

ele = pss.EnumElements( 0, None,0)
obj = ele.next()
print obj[0]
obj = ele.next()
print obj[0]
# end python

with the XLS file, I get the names of the two sheets.
Is there another way to parse the central directory out of
a CHM file?

tia,
tlviewer




From timothy at open-networks.net  Fri May  6 19:02:42 2005
From: timothy at open-networks.net (Timothy Smith)
Date: Sat, 07 May 2005 09:02:42 +1000
Subject: py2exe + svn - the final drama
In-Reply-To: <just-075293.00240707052005@news1.news.xs4all.nl>
References: <427AD7E8.1060500@open-networks.net>	<mailman.96.1115384045.29826.python-list@python.org>	<uoebojc8g.fsf@fitlinxx.com>
	<just-075293.00240707052005@news1.news.xs4all.nl>
Message-ID: <427BF792.1020500@open-networks.net>

Just wrote:

>In article <uoebojc8g.fsf at fitlinxx.com>,
> David Bolen <db3l at fitlinxx.com> wrote:
>
>  
>
>>Are you perhaps trying to update the zip file in-place while it is still
>>being used by the application?  I'm not sure that's a safe operation. 
>>    
>>
>
>I'm sure it's not :)
>
>[lots of useful help snipped]
>
>the zipimport module has an attr called _zip_directory_cache, which is a 
>dict you can .clear(). Still, reloading modules is hairy at best, its 
>probably easiest to relaunch your app when the .zip file has changed.
>
>Just
>  
>
what i do is as soon as the update is complete i close the app, but it 
still gives the error, i tried clear() after update and before it, it 
still got the same error. it's be nice to not have to fiddle around with 
the zip file, i really think making py2exe create a dir instead of a zip 
will be much better
here what i do anyway

if (os.name == 'nt') or (os.name == 'win32'):
           
            client = pysvn.Client()
            #get current revision number
            CurrentRev = client.info('').revision.number
           
            Check = client.update('')
            sys.path_importer_cache.clear()
           
            if Check.number > CurrentRev:
                self.Popup('Update installed, click ok and restart 
','Update installed')
                self.Destroy()
   
        else:
            InfoMsg.Update(3,'No Updates needed')   



From flamesrock at gmail.com  Mon May 16 23:14:43 2005
From: flamesrock at gmail.com (flamesrock)
Date: 16 May 2005 20:14:43 -0700
Subject: Python on a public library computer
In-Reply-To: <roy-56D210.19371216052005@reader1.panix.com>
References: <1116069664.779281.320540@g47g2000cwa.googlegroups.com>
	<87r7g6rbz0.fsf@pobox.com>
	<mailman.67.1116286093.8733.python-list@python.org>
	<roy-56D210.19371216052005@reader1.panix.com>
Message-ID: <1116299683.490847.294300@g43g2000cwa.googlegroups.com>

Panix.com seems a little on the expensive side..

10$/mo?
Roy Smith wrote:
> Timothy Smith <timothy at open-networks.net> wrote:
> > there's a few (brave) public access unix shell providers out there.
if
> > you could run telnet you could use them
>
> If you want to go that route, I highly suggest panix.com.  They've
been in
> business forever, are geek friendly, and have a technical support
staff
> (and attitude) that just can't be beat.  I get a unix shell account
from
> them, mostly for mail and news access (but, on occasion, it's nice to
have
> a unix box I can ssh into from anywhere).
>
> They're currently running Python-2.4.  A couple of the active
pythonistas 
> that hang out here have panix accounts.



From peter at engcorp.com  Mon May 23 15:09:56 2005
From: peter at engcorp.com (Peter Hansen)
Date: Mon, 23 May 2005 15:09:56 -0400
Subject: Terminating a thread from the parent
In-Reply-To: <1116869282.045234.239040@g14g2000cwa.googlegroups.com>
References: <1116869282.045234.239040@g14g2000cwa.googlegroups.com>
Message-ID: <DfKdnRWzebcPtw_fRVn-sA@powergate.ca>

DE wrote:
> I have an app with embedded Python. Python scripts create their own
> threads and I need to terminate these threads at the point where the
> user wants to leave the application. I use threading.Thread as base
> classes.
> 
> I have tried to use call the join method of the python thread objects
> from C++. But although the call succeeds, the threads don't exit.

join() waits until the thread terminates, but it doesn't cause it to 
terminate.

> What is the proper way of doing this ? (e.g. how does the python shell
> do this ? )

You have to poll for a termination request in the thread's main loop, 
and have the thread terminate itself (by returning from the target 
function or from the run() method, depending on which technique you used 
to create the Thread in the first place).  Threads cannot be forcibly 
terminated**.

There are numerous examples of this in the archives and probably a 
Cookbook recipe or two about it, if you look.  Otherwise someone can 
post an example here.

-Peter

** The exception is Threads on which .setDaemon(True) has been called, 
which will terminate immediately when the main thread exits (i.e. when 
the entire process terminates), though that might not be helpful to you 
in your particular situation.


From mwm at mired.org  Tue May 10 20:39:45 2005
From: mwm at mired.org (Mike Meyer)
Date: Tue, 10 May 2005 19:39:45 -0500
Subject: Need a little parse help
References: <mailman.310.1115747834.29826.python-list@python.org>
	<1115756261.255249.299870@f14g2000cwb.googlegroups.com>
	<1115767302.830054.143810@f14g2000cwb.googlegroups.com>
Message-ID: <86br7imw8e.fsf@guru.mired.org>

"Michael Hartl" <mhartl at post.harvard.edu> writes:

> I'd also like to note that both the inputfiles variable and the
> readlines() method are superfluous; to iterate through the file line by
> line, use either
>
> for line in open(inputfilename):
>     # do something with line
>
> or (my personal preference, since I like to think of the file as a
> thing rather than an action)
>
> for line in file(inputfilename):
>     # do something with line

I'd like to note that failing to close the file explicitly is a bad
habit. You really should invoke the close method, rather than relying
on the garbage collector to close them for you. This means you do need
a variable to hold the file object. 99% of the time nothing bad will
happen if you skip this, but that 1% can always come back to byte you
in the *ss.

     <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From cfajohnson at gmail.com  Sun May 29 01:36:09 2005
From: cfajohnson at gmail.com (Chris F.A. Johnson)
Date: Sun, 29 May 2005 01:36:09 -0400
Subject: How do i read just the last line of a text file?
References: <1117341766.166081.132240@o13g2000cwo.googlegroups.com>
Message-ID: <9v0om2-5fl.ln1@rogers.com>

On Sun, 29 May 2005 at 04:42 GMT, nephish wrote:
> Hey there.
> i want to set a variable to represent the last line of a text file
> how do i do that?
> or even better, how do i create a list of the lines of a text file?

from sys import argv          ## Import argv from sys module

file = open(argv[1])          ## Open the file given on the command line
all_lines = file.readlines()  ## Read all the lines
last_line = all_lines[-1]     ## Assign the last line


-- 
    Chris F.A. Johnson                     <http://cfaj.freeshell.org>
    ==================================================================
    Shell Scripting Recipes: A Problem-Solution Approach, 2005, Apress
    <http://www.torfree.net/~chris/books/cfaj/ssr.html>


From rkern at ucsd.edu  Wed May 11 23:51:15 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Wed, 11 May 2005 20:51:15 -0700
Subject: Python Documentation (should be better?)
In-Reply-To: <4282D0C5.3A8B3786@pauahtun.org>
References: <5C99C308457E6D4EA5448EA52A66004A675A6E@or.mxim.com>	<17026.26789.592527.975821@montanaro.dyndns.org>	<mailman.398.1115843305.29826.python-list@python.org>	<428276e8$0$318$626a14ce@news.free.fr>	<mailman.411.1115854727.29826.python-list@python.org>	<lvudnZwSQdrDAh_fRVn-sQ@comcast.com>	<4282A5DF.44C84B18@pauahtun.org>
	<d5u8mk$k6n$1@sea.gmane.org> <4282D0C5.3A8B3786@pauahtun.org>
Message-ID: <d5ujd8$cq5$1@sea.gmane.org>

Ivan Van Laningham wrote:
> Hi All--
> 
> Robert Kern wrote:
> 
>>Ivan Van Laningham wrote:
>>
>>
>>>http://www.python.org/doc/
>>>
>>
>>Searching on docs.python.org goes through just the stuff that's on
>>docs.python.org, which is pretty much just documentation. Google's magic
>>points to the current documentation.
>>
>>Searching on www.python.org trolls through the entire www.python.org
>>site. The search box doesn't narrow its scope just because you happen to
>>be in the Documentation section currently. It doesn't get the current
>>documentation because Google's magic gets a bit confused.
> 
> I get that.  My question, cleverly concealed in a rant, was, "Why does
> clicking on the Documentation link at python.org NOT take me to
> docs.python.org?"  Why is there a difference?  If there must be a
> difference, why isn't the difference labelled as such?  This is a
> difference that makes a difference.

I believe that docs.python.org was added mostly to aid Google searches. 
I *do* think that the Documentation link should go to docs.python.org. I 
believe there is a mailing list somewhere that discusses improvements to 
the website.

<Googles> Ah:

http://mail.python.org/mailman/listinfo/pydotorg/

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From Sebastien.Boisgerault at gmail.com  Wed May 11 16:33:20 2005
From: Sebastien.Boisgerault at gmail.com (=?iso-8859-1?q?S=E9bastien_Boisg=E9rault?=)
Date: 11 May 2005 13:33:20 -0700
Subject: optparse
In-Reply-To: <sPKdnV13ANzA9B_fRVn-iQ@comcast.com>
References: <1115841250.764632.296820@g47g2000cwa.googlegroups.com>
	<sPKdnV13ANzA9B_fRVn-iQ@comcast.com>
Message-ID: <1115843600.174250.16770@f14g2000cwb.googlegroups.com>


Steven Bethard wrote:
> S?bastien Boisg?rault wrote:
> > Any idea why the 'options' object in
> >
> > # optparse stuff
> > (options, args) = parser.parse_args()
> >
> > is not/couldn't be a real dict ? Or why at least it
> > does not support dict's usual methods ?
>
> Well, it's not a real dict because the original API intends it to be
> used as object attributes.

Sure ;). But what are the pros of this choice ? The option __str__
mimicks the behavior of a dict. Why not a full interface support
of it ?

> However, if you need a dict, it's pretty
> simple -- use vars() or .__dict__:

Agreed. 100%.

SB



From nyamatongwe+thunder at gmail.com  Wed May 18 19:33:58 2005
From: nyamatongwe+thunder at gmail.com (Neil Hodgson)
Date: Wed, 18 May 2005 23:33:58 GMT
Subject: Is Python suitable for a huge, enterprise size app?
In-Reply-To: <1116440427.255902.36260@g49g2000cwa.googlegroups.com>
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>
	<1116432325.497438.64580@g49g2000cwa.googlegroups.com>
	<1116433218.495131.71260@g49g2000cwa.googlegroups.com>
	<1116440427.255902.36260@g49g2000cwa.googlegroups.com>
Message-ID: <GhQie.7592$E7.7374@news-server.bigpond.net.au>

Steve M:

> ... discusses the problem with memory allocation in CPython. 
 > Apparently CPython is not good at, or incapable of, releasing
 > memory back to the operating system.

    I'm fairly sure Java does not give memory back to the operating 
system either. A quick search did not give a definitive answer but there 
were complaints from people about not being able to do this.

    Neil


From sjmachin at lexicon.net  Tue May 10 16:55:19 2005
From: sjmachin at lexicon.net (John Machin)
Date: Wed, 11 May 2005 06:55:19 +1000
Subject: Trouble saving unicode text to file
References: <1115500976.571232.76100@z14g2000cwz.googlegroups.com>
	<ameq71lt3ohe3o85fsh4m456qgrnj82dfk@4ax.com>
	<d5ppl3$pto$1@news.island.liu.se>
Message-ID: <a03281t2i1qngf2rnkgsdsq8nvou46nq00@4ax.com>

On Tue, 10 May 2005 07:59:31 +0000 (UTC), Thomas Bellman
<bellman at lysator.liu.se> wrote:

>John Machin <sjmachin at lexicon.net> writes:
>
>> Which raises a question: who or what is going to read your file? If a
>> Unicode-aware application, and never a human, you might like to
>> consider encoding the text as utf-16.
>
>Why would one want to use an encoding that is neither semi-compatible
>with ASCII (the way UTF-8 is), nor uses fixed-with characters (like
>UTF-32 does)?

UTF-32 is yet another encoding. You still need to decode it into the
internal form supported by your processing software. With UTF-32xE,
you can only skip the decoding step when file's x == software's x and
your software uses 32 bits internally.

Python (2.4.1) doesn't have a utf_32 codec. Perhaps that's because
there isn't much call for it (yet). Let's pretend there is such a
codec in Python.

Once you have done codecs.open('inputfile', 'rb', 'utf_32') or
receivedstring.decode('utf_32'), what do you care whether your
*external representation* has fixed-width characters or not?

Putting it another way, any advantage of fixed-width characters is to
be found in *internal* storage, not *external* transmission or
storage. 

At the other end, if you don't have to squeeze your data through an
8-bit-wide non-binary channel, and you have no need for legibility to
humans, then the remaining considerations are efficiency and (if you
have no control over what's used at the other end) whether the
necessary codec is widely implemented. 

So rather than utf-16, perhaps I should have written something like:
"""
Consider utf-8 or utf-16. Consider following this by compression using
a widely-implemented protocol (gzip/zip/bzip2).
"""

Cheers,
John


From mhartl at post.harvard.edu  Tue May 10 19:21:42 2005
From: mhartl at post.harvard.edu (Michael Hartl)
Date: 10 May 2005 16:21:42 -0700
Subject: Need a little parse help
References: <mailman.310.1115747834.29826.python-list@python.org>
	<1115756261.255249.299870@f14g2000cwb.googlegroups.com>
Message-ID: <1115767302.830054.143810@f14g2000cwb.googlegroups.com>

I'd also like to note that both the inputfiles variable and the
readlines() method are superfluous; to iterate through the file line by
line, use either

for line in open(inputfilename):
    # do something with line

or (my personal preference, since I like to think of the file as a
thing rather than an action)

for line in file(inputfilename):
    # do something with line

(Note also that the 'r' argument to open/file is the default and so can
be omitted.)

Michael

--
Michael D. Hartl, Ph.D.
CTO, Quark Sports LLC
http://quarksports.com/



From scharan20 at gmail.com  Thu May 26 11:01:34 2005
From: scharan20 at gmail.com (Sri Charan)
Date: 26 May 2005 08:01:34 -0700
Subject: __init__() not called automatically
In-Reply-To: <Jxkle.833658$w62.402161@bgtnsc05-news.ops.worldnet.att.net>
References: <1117081917.760603.82610@z14g2000cwz.googlegroups.com>
	<mailman.120.1117082812.18027.python-list@python.org>
	<mailman.122.1117088782.18027.python-list@python.org>
	<Jxkle.833658$w62.402161@bgtnsc05-news.ops.worldnet.att.net>
Message-ID: <1117119694.090630.62360@z14g2000cwz.googlegroups.com>

The compiler also calls the default arguement constructor
automatically, if such a constructor is provided for the base
class(es); but, this becomes a special case of what has been said by
Andrew Koenig.

So, it is NOT just the no arguement constructor that is automatically
called; note that the default arguement constructor is kinda put in
place because sometimes, the user may call the constructor with no
arguements, while the object actually needs some values for proper
construction.



From usenet at gungfu.de  Mon May  2 11:53:18 2005
From: usenet at gungfu.de (=?iso-8859-1?q?Steffen_Gl=FCckselig?=)
Date: 2 May 2005 08:53:18 -0700
Subject: Which IDE is recommended?
References: <426f90ac$1_2@rain.i-cable.com>
	<1114608598.571508.6570@z14g2000cwz.googlegroups.com>
	<1114611543.156341.198870@o13g2000cwo.googlegroups.com>
Message-ID: <1115049198.620989.203450@g14g2000cwa.googlegroups.com>

> I'm a fan of PSPad.  It's free, light weight, and works with
> everything.
I want to second that. For small scripts PSPad is definitely very
useful and comfortable.

For larger scripts I'd consider something with code-completion. Maybe
PyDev.


best regards
Steffen



From mefjr75 at hotmail.com  Mon May  2 00:39:19 2005
From: mefjr75 at hotmail.com (M.E.Farmer)
Date: 1 May 2005 21:39:19 -0700
Subject: Webbrowser On Windows
In-Reply-To: <SBhde.23647$HR1.2796@clgrps12>
References: <mailman.85.1114978611.14961.python-list@python.org>
	<SBhde.23647$HR1.2796@clgrps12>
Message-ID: <1115008759.797584.24510@f14g2000cwb.googlegroups.com>

Awesome! works perfectly on win2k -> I.E 6
Python makes COM almost readable ;)
M.E.Farmer



From martin at v.loewis.de  Wed May 18 16:12:00 2005
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Wed, 18 May 2005 22:12:00 +0200
Subject: NaN support etc.
In-Reply-To: <mailman.160.1116438390.8733.python-list@python.org>
References: <mailman.160.1116438390.8733.python-list@python.org>
Message-ID: <428ba190$0$7687$9b622d9e@news.freenet.de>

Andreas Beyer wrote:
> How do I find out if NaN, infinity and alike is supported on the current
> python platform?

To rephrase Sebastian's (correct) answer: by

1. studying the documentation of the CPU vendor
2. studying the documentation of the compiler vendor, and performing
   extensive tests on how the compiler deals with IEEE-754
3. studying the documentation of the system's C library, reading
   its source code (if available), and performing extensive tests
   of the IEEE-754 support in the C libray
4. studying Python's source code (you can spare yourself reading
   documentation because there is none)

> Is there an 'official' handle for obtaining this information?

No.

> Similar: How do I get the maximum/minimum double for current machine?

By experimentation, and/or reading vendor documentation.

Regards,
Martin


From exarkun at divmod.com  Fri May 27 15:46:21 2005
From: exarkun at divmod.com (Jp Calderone)
Date: Fri, 27 May 2005 19:46:21 GMT
Subject: [Twisted-Python] xmlrpc deferred
In-Reply-To: <652481677.20050527222806@bounce-software.com>
Message-ID: <20050527194621.559.2069217516.divmod.quotient.11292@ohm>

On Fri, 27 May 2005 22:28:06 +0300, Catalin Constantin <catalin at dazoot.ro> wrote:
>Hi there,
>
>I have the following xmlrpc method:
>
>class FeederResource(xmlrpc.XMLRPC):
>        def __init__(self):
>                xmlrpc.XMLRPC.__init__(self)
>                self.feeder=Feeder()
>
>        def xmlrpc_getList(self, id):
>                return self.feeder.get_urls(id)
>
>The thing is that the self.feeder.get_urls takes too long to execute
>and while the request is running all the others are blocked.
>I want that while it computes the result the other XML RPC methods to
>be available.

The only answer here is to make get_urls() take less time.

What is it doing?  Is it blocking on network I/O?  Querying a database?  Prompting for user input?   _It_ should be creating and returned a Deferred (and later calling it back with a result), most likely, since it is the long-running operation.

>
>I wanted to use deferrals but i found no viable example.
>
>Eg what i've tried to do:
>        def xmlrpc_getList(self, id):
>                log.debug("getList is here for id %s" % id)
>                d = defer.Deferred()
>                d.addCallback(self.feeder.get_urls)
>                return d

Deferred don't make things asynchronous, cooperative, or non-blocking.  They only make dealing with callbacks more convenient.  If you add a blocking function as the callback to a Deferred, it will block the reactor just as effectively as if you called it yourself (bacause all that happens inside the Deferred is that the function gets called).

>
>My method feeder.get_urls is never called !
>

In the above code, nothing ever "fires" the Deferred - calls .callback() on it - so, never having a result, it never bothers to invoke any of its callbacks.  Deferred just hook results up to callbacks.

Jp


From http  Mon May  2 11:07:13 2005
From: http (Paul Rubin)
Date: 02 May 2005 08:07:13 -0700
Subject: How to kill a SocketServer?
References: <7xwtqj1lh1.fsf@ruckus.brouhaha.com>
	<mailman.83.1114972348.14961.python-list@python.org>
	<7xpswa4wfu.fsf@ruckus.brouhaha.com>
	<17013.25972.965219.254879@montanaro.dyndns.org>
	<mailman.5.1114997245.6583.python-list@python.org>
	<7xekcq75av.fsf@ruckus.brouhaha.com>
	<1115046280.413931.16970@g14g2000cwa.googlegroups.com>
Message-ID: <7xu0llhdjy.fsf@ruckus.brouhaha.com>

"guido at python.org" <gvanrossum at gmail.com> writes:
> > Ah, good point.  Something like this should probably be added to
> > SocketServer.py (optional timeout parameter to serve_forever), or at
> > least the trick should be mentioned in the docs.
> 
> I like this idea, and perhaps you all could come up with some more
> useful APIs in this area; I know that I often struggle a bit with
> getting these servers to stop.

I put an RFE in sourceforge last night, suggesting adding a shutdown()
method to socket servers.


From vincent at visualtrans.de  Sun May 22 07:03:00 2005
From: vincent at visualtrans.de (vincent wehren)
Date: Sun, 22 May 2005 13:03:00 +0200
Subject: install python 2.4.1
References: <1116758705.327764.33740@g14g2000cwa.googlegroups.com>
Message-ID: <d6pot2$2rd$1@news5.zwoll1.ov.home.nl>


<ajikoe at gmail.com> schrieb im Newsbeitrag 
news:1116758705.327764.33740 at g14g2000cwa.googlegroups.com...
| hi,
|
| I use python 2.4 and
| I would like to install python 2.4.1. Is it necessary to uninstall the
| first version or just install 2.4.1?

What platform? If you're on Windows and are using the msi-Installer, 
uninstalling is recommended.
It will also work without uninstalling, but IIRC, Windows Installer will 
zealously inspect the file version
of each individual file down the Python24 tree to detect necessary disk 
space and so forth, which can take quite some time.


|
| Does it effect pydef (eclipse editor) or komodo ide ?

Don't know..

--
Vincent Wehren

|
|
| pujo
| 




From rbt at athop1.ath.vt.edu  Fri May 20 23:05:09 2005
From: rbt at athop1.ath.vt.edu (rbt)
Date: Fri, 20 May 2005 23:05:09 -0400
Subject: count files in a directory
In-Reply-To: <mailman.277.1116643240.8733.python-list@python.org>
References: <d6m5e1$cr7$1@solaris.cc.vt.edu>
	<mailman.277.1116643240.8733.python-list@python.org>
Message-ID: <d6m8h7$i4v$1@solaris.cc.vt.edu>

James Stroud wrote:
> Come to think of it
> 
> file_count = len(os.walk(valid_path)[2])

I get this traceback:

PythonWin 2.4 (#60, Nov 30 2004, 09:34:21) [MSC v.1310 32 bit (Intel)] on win32.
Portions Copyright 1994-2004 Mark Hammond (mhammond at skippinet.com.au) - see 
'Help/About PythonWin' for further copyright information.
Traceback (most recent call last):
   File "C:\Program 
Files\Python24\Lib\site-packages\pythonwin\pywin\framework\scriptutils.py", line 310, 
in RunScript
     exec codeObject in __main__.__dict__
   File "C:\Documents and Settings\rbt\Desktop\newa\replicate.py", line 57, in ?
     A = count_em(X)
   File "C:\Documents and Settings\rbt\Desktop\newa\replicate.py", line 51, in count_em
     count = len(os.walk(valid_path)[2])
TypeError: unsubscriptable object


From rkern at ucsd.edu  Mon May 30 14:53:49 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Mon, 30 May 2005 11:53:49 -0700
Subject: decimal numarray
In-Reply-To: <20050602072124.GA28107@mrna.tn.nic.in>
References: <20050602072124.GA28107@mrna.tn.nic.in>
Message-ID: <d7fnau$rft$1@sea.gmane.org>

km wrote:
> Hi all,
>  is there any support for decimal type in numarray module ? 

Not specifically, no. However, there is the concept of an "object 
array," which are arrays of arbitrary Python objects. See numarray.objects .

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From scharan20 at gmail.com  Thu May 26 11:02:46 2005
From: scharan20 at gmail.com (Sri Charan)
Date: 26 May 2005 08:02:46 -0700
Subject: __init__() not called automatically
In-Reply-To: <Vo2dnXcPm_YhRgjfRVn-uA@comcast.com>
References: <1117081917.760603.82610@z14g2000cwz.googlegroups.com>
	<mailman.121.1117083356.18027.python-list@python.org>
	<II6dnf-RIYhEwwjfRVn-hA@comcast.com>
	<1117095907.393269.87540@g44g2000cwa.googlegroups.com>
	<Vo2dnXcPm_YhRgjfRVn-uA@comcast.com>
Message-ID: <1117119766.252990.120850@g49g2000cwa.googlegroups.com>

I guess you are right.



From sjmachin at lexicon.net  Mon May 16 19:01:03 2005
From: sjmachin at lexicon.net (John Machin)
Date: Tue, 17 May 2005 09:01:03 +1000
Subject: Parsing text into dates?
References: <1116277171.492587.38080@g47g2000cwa.googlegroups.com>
Message-ID: <317i815ifjtpn3screkeuv4jfk33uu41ck@4ax.com>

On 16 May 2005 13:59:31 -0700, "Thomas W" <thomas.weholt at gmail.com>
wrote:

>I'm developing a web-application where the user sometimes has to enter
>dates in plain text, allthough a format may be provided to give clues.
>On the server side this piece of text has to be parsed into a datetime
>python-object. Does anybody have any pointers on this?
>
>Besides the actual parsing, my main concern is the different locale
>date formats and how to be able to parse those strange us-like
>"month/day/year" compared to the clever and intuitive european-style
>"day/month/year" etc.

<rant>
Well I'm from a locale that uses the dd/mm/yyyy style and I think it's
only marginally less stupid than the mm/dd/yyyy style.
</rant>

How much intuition is required to determine in an international
context what was meant by 01/12/2004? First of December or 12th of
January? The consequences of misinterpretation can be enormous.

If this application is being deployed from a central server where the
users can be worldwide, you have two options:

(a) try to work out somehow what the user's locale is, and then work
with dates in the legacy format "appropriate" to the locale.

(b) Use the considerably-less-stupid ISO 8601 standard format
yyyy-mm-dd (e.g. 2004-12-01) -- throughout your web-application, not
just in your data entry. 

Having said all of that, [bottom-up question] how are you handling
locale differences in language, script, currency symbol, decimal
"point", thousands separator, postal address formats, surname /
given-name order, etc etc etc? [top-down question] What *is* your
target audience?




From onurb at xiludom.gro  Wed May  4 04:35:30 2005
From: onurb at xiludom.gro (bruno modulix)
Date: Wed, 04 May 2005 10:35:30 +0200
Subject: PHPParser pod Zope
In-Reply-To: <mailman.142.1115193359.6583.python-list@python.org>
References: <yttaxdmad3aa$.1cemtbg8lyvba.dlg@40tude.net>	<4277d8ea$0$18802$636a15ce@news.free.fr>	<1115181234.612599.83930@g14g2000cwa.googlegroups.com>
	<mailman.142.1115193359.6583.python-list@python.org>
Message-ID: <42788954$0$316$636a15ce@news.free.fr>

Josef Meile wrote:
(snip)
> 
> I don't find this two replies funy :-(. I think it is impolite to make
> fun of the OP. 

My intent was not to make fun *of* the OP. Now I'm willing to admit that 
my answer may not be as (kindly) funny as intended, and so I hope the OP 
has a better sens of humor than you and me !-)

-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for 
p in 'onurb at xiludom.gro'.split('@')])"


From rschroev_nospam_ml at fastmail.fm  Mon May  2 11:47:56 2005
From: rschroev_nospam_ml at fastmail.fm (Roel Schroeven)
Date: Mon, 02 May 2005 15:47:56 GMT
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <mailman.22.1115040588.6583.python-list@python.org>
References: <d4u60o$akh$1@news2.netvision.net.il>	<1114828856.889984.171750@g14g2000cwa.googlegroups.com>	<1115036638.557573.153250@z14g2000cwz.googlegroups.com>
	<mailman.22.1115040588.6583.python-list@python.org>
Message-ID: <MYrde.79346$xJ7.4988028@phobos.telenet-ops.be>

John Hazen wrote:

> * mstarzyk at gmail.com <mstarzyk at gmail.com> [2005-05-02 05:10]:
> 
>>Any hints on level 6 ?
>>There is "zip" in the page source, "ZIp" in the
>>image data, but have no clue what to do with them
>>- tried many things :). 
> 
> 
> Have you found the zip file yet?
> 
> (I did, and I still can't figure it out.  I'm wondering if there are
> comments embedded in the jpg that none of my viewers will show me.
> Hmm, maybe there's a python module that does that...  I'll play with it
> more after I sleep on it.)
> 
> -John

Possible spoiler, so ROT13'ed:

Qvq lbh frr naq ernq gur ernqzr.gkg va gur mvc svyr?

-- 
If I have been able to see further, it was only because I stood
on the shoulders of giants.  -- Isaac Newton

Roel Schroeven


From nico at bidon.fr  Wed May 18 13:49:46 2005
From: nico at bidon.fr (Nicolas Pourcelot)
Date: Wed, 18 May 2005 19:49:46 +0200
Subject: wxpython and wxtextctrl
Message-ID: <428b8033$0$1342$626a14ce@news.free.fr>

Hello,
my script worked well until today : when I tried to launch it, I got the 
following :

     frame = MyFrame(None,-1,"Geometrie",size=wx.Size(600,400))
   File "/home/nico/Desktop/wxGeometrie/version 0.73/geometrie.py", line 
74, in __init__
     self.commande.Bind(wx.EVT_CHAR, self.EvtChar)
AttributeError: wxTextCtrl instance has no attribute 'Bind'

(self.commande is a wxTextCtrl instance)
I don't understand : why did wxTextCtrl lost its Bind attribute ??
As there's not so much changes on my computer since yesterday, I suppose 
this is due to Boa package installation on my Ubuntu Hoary ?
Does Boa installation changes wxpython version ?
Is wxTextCtrl attribute .Bind() obsolete ??

Thanks,
Nicolas


From kenchanningphd at gmail.com  Tue May 17 18:25:54 2005
From: kenchanningphd at gmail.com (kenchanningphd at gmail.com)
Date: 17 May 2005 15:25:54 -0700
Subject: win32com interface implementation example
Message-ID: <1116368754.643802.115010@g44g2000cwa.googlegroups.com>

Can someone post or point me to a fairly simple example where
a COM interface (other than the standard ones already exposed by the
win32com library) is implemented in python.  I fear I am doing it
incorrectly.

Here is my example:
Suppose there is a COM interface "FOO" loaded in the windows registry
that has one method: add
Also suppose that COM object BAR has a method that expects a COM object
that implements FOO
-----------------------------------
import pythoncom
guid = pythoncom.CreateGuid()
class MyImplementation:
	_public_methods_ = ["add"]
	_reg_clsid_ = guid
	_reg_progid_ = "MyImplementation"
	_com_interfaces_ = [IID('{ID OF THE FOO INTERFACE}')]

	def add(self,a,b):
		print a + b


import win32com
win32com.server.register.UseCommandLine(MyImplementation)
MI = win32com.Dispatch("MyImplementation")
bar = win32com.Dispatch("BAR")
bar.somemethod(MI)
--------------------------------
Am I forgetting something here?



From martin.witte at gmail.com  Mon May 30 09:19:02 2005
From: martin.witte at gmail.com (wittempj@hotmail.com)
Date: 30 May 2005 06:19:02 -0700
Subject: Newbie learning OOP 2nd ?
References: <1117456531.293218.134650@g44g2000cwa.googlegroups.com>
Message-ID: <1117459142.635799.100520@g47g2000cwa.googlegroups.com>

I would split your code such that the Q&A is seperated from the
calculations, and I would model the bill something like :

class allbills(object):
    def __init__(self, bill, tip):
        self._bill = bill
        self._tip = tip

    def gettip(self):
        return self._tip / 100.0
    tip = property(gettip)

    def gettotal(self):
        return self._bill * (1 + self.tax + self.tip)
    total = property(gettotal)

    def __repr__(self):
        return 'tip = %.2f, tax = %.2f, total = %.2f ' % \
               (self.tip, self.tax, self.total)

class usbill(allbills):
    def __init__(self, bill, tip):
        super(usbill, self).__init__(bill, tip)

    def gettax(self):
        return 0.0675
    tax = property(gettax)

class chicago_bill(allbills):
    def __init__(self, bill, tip):
        super(chicago_bill, self).__init__(bill, tip)

    def gettax(self):
        return 0.0725
    tax = property(gettax)



From duduca007 at yahoo.com  Thu May 12 16:00:45 2005
From: duduca007 at yahoo.com (Carlos Moreira)
Date: Thu, 12 May 2005 13:00:45 -0700 (PDT)
Subject: Python Polymorphism
In-Reply-To: 6667
Message-ID: <20050512200045.85674.qmail@web52604.mail.yahoo.com>


--- Fredrik Lundh <fredrik at pythonware.com> wrote:

> so phrases like

     <sniped>

>     (etc)
> 
> doesn't tell you that polymorphism is a fundamental
> part of the language,
> and used all over the place.  or did you have a
> non-OO meaning of the
> word in mind?

Ok, I prefer to think that I could be more specific.
So, let's try again.
Supose that I want to create two methos (inside a
class) with exactly same name, but number of
parameters different:

class myClass:
     myAttribute = 0
     def myMethod(self):
          self.myAttribute += 1
     def myMethod(self, myValue):
          self.myAttribute += myValue

Both method hold same identifier, the only difference
in them signture are parameters.
How could I simulate the situation above, using the
language dynamic link (or polymorphism, as you
prefer)?

Look, I don't want to use things like:

....
      def myMethod(self, myValue=None):
           if(not myValue):
                self.myAttribute += 1
           else:
                self.myAttribute += myValue
....

I want to use the power of polymorphism to modelate
the problem.

           Thanks and best regards

Cadu Moreira


		
__________________________________ 
Do you Yahoo!? 
Yahoo! Mail - Find what you need with new enhanced search. 
http://info.mail.yahoo.com/mail_250


From bcannon at gmail.com  Tue May 31 16:46:14 2005
From: bcannon at gmail.com (bcannon at gmail.com)
Date: 31 May 2005 13:46:14 -0700
Subject: convert a string to tuple
In-Reply-To: <1117570449.887422.225670@g43g2000cwa.googlegroups.com>
References: <1117570449.887422.225670@g43g2000cwa.googlegroups.com>
Message-ID: <1117572374.910751.5400@f14g2000cwb.googlegroups.com>

Pass it to eval:

>>> eval('(1, 2, 3, 4, 5)')
(1, 2, 3, 4, 5)

Basically what you are doing it evaluating the repr of the tuple.

-Brett



From thomas at eforms.co.nz  Wed May 18 22:28:20 2005
From: thomas at eforms.co.nz (Thomas)
Date: Thu, 19 May 2005 14:28:20 +1200
Subject: source file for kalab's pycron & makezip
Message-ID: <20050519022629.18C3B37A01@mail.tintz.co.nz>

Hi All,

 

I am trying to get the source files for pycron &makezip.

 

http://www.kalab.com/freeware/pycron/pycron.htm

 

I tried mailing a request to kalab at gmx.net but no joy yet.

 

Cheers

Thomas

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From cjb111 at student.canterbury.ac.nz  Sun May 29 05:08:05 2005
From: cjb111 at student.canterbury.ac.nz (Crispen)
Date: 29 May 2005 02:08:05 -0700
Subject: ControlDesk Automation in dSpace
Message-ID: <1117357685.430456.257870@g43g2000cwa.googlegroups.com>

I am having trouble using the ControlDesk automation libraries in
python. In particluiar running the automation in a thread. My code is
as follows, is keeps coming up with this strange error. Any help would
be great.

Crispen

import cdacon
from time import sleep
from cdautomationlib import *

def Auto():
   sleep(0.5)
   # triggering://dSPACE NumericInput Control_1:WriteData
   Instrumentation().ConnectionController.DisableSystemPoll()
   Instrumentation().Layouts.Item("c:\\users\\matlab
files\\triggering.lay").Instruments.Item("dSPACE NumericInput
Control_1").Value = 1.0000000000000000
   Instrumentation().ConnectionController.ProcessAnimationEvent
("triggering://dSPACE NumericInput Control_1","WriteData")
   Instrumentation().ConnectionController.EnableSystemPoll()
   sleep(0.5)
   # triggering://dSPACE NumericInput Control_1:WriteData
   Instrumentation().ConnectionController.DisableSystemPoll()
   Instrumentation().Layouts.Item("c:\\users\\matlab
files\\triggering.lay").Instruments.Item("dSPACE NumericInput
Control_1").Value = 0.00000000000000000

Instrumentation().ConnectionController.ProcessAnimationEvent("triggering://dSPACE
NumericInput Control_1","WriteData")
 Instrumentation().ConnectionController.EnableSystemPoll()
   sleep(0.5)
   # triggering://dSPACE NumericInput Control:WriteData
   Instrumentation().ConnectionController.DisableSystemPoll()
   Instrumentation().Layouts.Item("c:\\users\\matlab
files\\triggering.lay").Instruments.Item("dSPACE NumericInput
Control").Value = 1.0000000000000000
   Instrumentation().ConnectionController.ProcessAnimationEvent
("triggering://dSPACE NumericInput Control","WriteData")
   Instrumentation().ConnectionController.EnableSystemPoll()
   sleep(0.5)
   # triggering://dSPACE NumericInput Control:WriteData
   Instrumentation().ConnectionController.DisableSystemPoll()
   sleep(0.5)
   Instrumentation().Layouts.Item("c:\\users\\matlab
files\\triggering.lay").Instruments.Item("dSPACE NumericInput
Control").Value = 0.00000000000000000

Instrumentation().ConnectionController.ProcessAnimationEvent("triggering://dSPACE
NumericInput Control","WriteData")
   Instrumentation().ConnectionController.EnableSystemPoll()
   sleep(0.5)
   Instrumentation().Layouts.Item("c:\\users\\matlab
files\\triggering.lay").Activate()
   sleep(0.5)
   Instrumentation().Layouts.Item("c:\\users\\matlab
files\\triggering.lay").Activate()


thread.start_new_thread(Auto,())



From davidschein at alumni.tufts.edu  Mon May 30 14:14:12 2005
From: davidschein at alumni.tufts.edu (David S.)
Date: Mon, 30 May 2005 18:14:12 +0000 (UTC)
Subject: standard doc style for method signatures
Message-ID: <loom.20050530T201141-934@post.gmane.org>

Is there a generally accepted way to denote method signatures---that is,
expected type or required interface for each argument.  



From lreder at worldnet.att.net  Fri May 20 01:13:03 2005
From: lreder at worldnet.att.net (Leonard J. Reder)
Date: Fri, 20 May 2005 05:13:03 GMT
Subject: PIL and line drawing
Message-ID: <zleje.794472$w62.202433@bgtnsc05-news.ops.worldnet.att.net>

Hello,

I am using PIL to annotate some images with lines.  I could not
find anyway to make the line that is drawn from the ImageDraw object
thicker.  Does anyone have a suggestion or solution for solving this
without to much hacking?

Thanks for any replies,

Len
-- 
===================================
Leonard J. Reder
Home office email : reder at ieee.org
Lab email         : reder at jpl.nasa.gov
Lab web page      : http://reder.jpl.nasa.gov
===================================


From steven.bethard at gmail.com  Tue May 24 11:57:23 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Tue, 24 May 2005 09:57:23 -0600
Subject: staticmethod and classmethod
In-Reply-To: <d6v2s5$blp$1@ucsnew1.ncl.ac.uk>
References: <d6v2s5$blp$1@ucsnew1.ncl.ac.uk>
Message-ID: <ldmdnebaUrd70w7fRVn-tA@comcast.com>

C Gillespie wrote:
> Does anyone know of any examples on how (& where) to use staticmethods and
> classmethods?

My personal experience is that I almost *never* want a staticmethod. 
The things that I would have written as a staticmethod in Java I simply 
write as a module-level function in Python.

I do occasionally used classmethods though to build alternate 
constructors.  I recently had a class with a constructor that looked like:

class C(object):
     def __init__(self, *args):
         ...

I already had code working with this constructor, but I needed to add an 
optional 'index' parameter.  I found the clearest way to do this was 
something like:

class C(object):
     def __init__(self, *args):
         ...
     @classmethod
     def indexed(cls, index, *args):
         ...
         obj = cls(*args)
         obj.index = index
         ...
         return obj

Then the classes that needed the 'index' parameter simply use 
C.indexed() as the constructor instead of C().

STeVe


From modelnine at ceosg.de  Tue May 31 21:03:00 2005
From: modelnine at ceosg.de (Heiko Wundram)
Date: Wed, 1 Jun 2005 03:03:00 +0200
Subject: ANN: PyAuthD - beta 3
Message-ID: <200506010303.03867.modelnine@ceosg.de>

Hi all!

I've tagged PyAuthD, beta 3 today. This release marks a milestone, as PyAuthD 
has superseded PyPAM and PyNSS (the precursors not implemented on a 
client/server model which are private to my univ) on the mail server which 
hosts our university's student email accounts.

I'm able to release a demo server along with the actual modules (and 
an !untested! Postfix patch to enable PyAuthD to serve Postfix maps) under an 
adapted BSD license.

What is PyAuthD?
----------------

A client/server implementation of a Python authentication daemon. The 
initiative to implement a Python authentication daemon came from the fact 
that MS SQL-Server is used as the backend server for our univ's HIS 
(Hochschul-Informations-System, university information system), and there are 
no proper PAM and NSS modules which can access MS SQL-server (as far as I 
found).

Looking at the winbind sources (of the samba project) taking the step to 
implement short and concise C modules which access a Python daemon which does 
the actual handling wasn't much farfetched.

Currently, PyAuthD offers:

1) PAM authentication
2) NSS handling by dispatching to the server process on get(pw/sp/gr)* 
functions, which foregoes reentrancy issues
3) PPPd authentication which requires the authentication daemon to hand out 
clear-text passwords over the socket
4) Untested Postfix map implementation

This allows unprecedented abilities for authentication purposes by being able 
to program authentication logic in a high-level language under a single 
unified structure.

What is it not?
---------------

A "round" system. PyAuthD is a system that "works for me and my univ" (TM), 
and as such I'm just releasing it (minus the actual authentication part we 
use) for all people out there who want to hack on it just as I do.

On the other hand I don't think that creating a single infrastructure is 
sensible at all, and as such won't spend much time creating any more means to 
access and compile it than I currently do.

If you feel you want to create a distribution or add autoconf/automake 
handling and are willing to spend the time, feel free to contact me!

What about security?
--------------------

Currently PyAuthD will run under standard Python. "Standard Python" does not 
offer security features which enable it to work reliably in a 
multiuser-environment (as there is a requirement that all users can connect 
to it), as Python does not clear memory on releasing it making several 
attacks possible in case users have login-shells on the server.

Furthermore Linux offers the possibility to access process information on the 
connecting process of a Unix-Domain-Socket, but this functionality is not 
exposed in standard Python.

All this has led to the spin-off of a further project also hosted along with 
PyAuthD called SEPython, which aims at improving this situation. SEPython is 
currently based on standard Python 2.4.1, and has implemented the necessary 
recvmsg and sendmsg calls for retrieving process/user information from a unix 
domain socket.

SEPython hasn't implemented clearing of memory yet.

As we don't offer user-login shells on the mail-server which uses PyAuthD, we 
currently don't spend time on SEPython, but this situation will change when 
the mail-server has been fully migrated to the new infrastructure.

If there's interest I'll package my patches on SEPython for inclusion in the 
standard Python tree, but I don't think that platform-dependent patches like 
sendmsg/recvmsg will ever make it into the official tree.

ChangeLog
---------

Please look at the commit log since tag beta-2.

Download
--------

Access using Subversion:

svn co http://svn.asta.mh-hannover.de/svn/repos/PyAuthD/tags/beta-3 PyAuthD

or ViewCVS:

http://svn.asta.mh-hannover.de/viewcvs/PyAuthD/tags/beta-3/

License
-------

PyAuthD as in subversion is released under an adapted BSD-license, except the 
Postfix module, which is released under the Postfix Secure Mailer license.

Contact
-------

Heiko Wundram <modelnine at ceosg.de>
or
Heiko Wundram <modelnine at stud.asta.mh-hannover.de>

-- 
--- Heiko.
listening to: De/Vision - Miss You More
  see you at: http://www.stud.mh-hannover.de/~hwundram/wordpress/
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From heiko.wundram at ceosg.de  Mon May  2 06:58:34 2005
From: heiko.wundram at ceosg.de (Heiko Wundram)
Date: Mon, 2 May 2005 12:58:34 +0200
Subject: PyAuthD Beta 2a
Message-ID: <200505021258.34970.heiko.wundram@ceosg.de>

PyAuthD - Python Authentication Daemon
--------------------------------------

PyAuthD is a project to create PAM, NSS and PPPd modules which communicate 
with a running Python authentication daemon using a Unix Domain socket. The 
project focusses so far on creating the necessary modules for PAM, NSS and 
PPPd.

As the authentication is done using a single backend daemon, authentication on 
a Unix system can now be done safely and securely through a single process 
which need not even run as root as the metalanguage Python offers shields the 
programmer from handling common mistakes such as buffer-overflows. Choosing 
Python as the language to implement the daemon has other security 
implications which I am working on resolving.

Current Release
---------------

I've released PyAuthD, beta 2a. The project is now available via subversion 
from the following URL:

http://193.174.104.108/svn/repos/tags/PyAuthD-beta2a

or through ViewCVS:

http://193.174.104.108/viewcvs

Beta 2a does not yet implement a single daemon infrastructure, but contains 
(rather) incomplete samples of how to interact with the modules in question. 
These daemons were written with the single purpose to test the modules, and 
may not work with the current state of the modules anymore.

License
-------

PyAuthD and the modules are released under a "New BSD"-style license. You are 
required to keep the copyright intact if you plan on using this code, but 
otherwise are not encumbered in using it except by the common advertising 
clause.

Plans/Bugfixes
--------------

- Create autoconf/automake infrastructure for PyAuthD (looking for volunteers)
- Implement the single signon daemon in a proper way.
- Create Patches for the Python interpreter which cause types to overwrite the 
memory used by an object with zeros after freeing it.
- Security-check the module implementations.
- Implement proper error handling in the NSS get*ent functions when memory 
runs out.
- and much, much more...

Help
----

I'm working on this project with two other people. If you are interested in 
joining us, feel free to mail me, and I can arrange commit priviledges to the 
SVN repository.

Otherwise, I'm looking forward to this thursday, where I'll present the 
project at this years German Linux-User-Groups meeting. Hope to see you 
there!

--- Heiko Wundram.


From http  Sun May 15 16:19:15 2005
From: http (Paul Rubin)
Date: 15 May 2005 13:19:15 -0700
Subject: Schily ueber Deutschland
References: <mailman.22.1116170676.15315.python-list@python.org>
	<hpfkl2-303.ln1@Bernd.Nawothnig.dialin.t-online.de>
Message-ID: <7x3bso6y4c.fsf@ruckus.brouhaha.com>

Bernd Nawothnig <Bernd.Nawothnig at t-online.de> writes:
> On 2005-05-15, mal at lemburg.com [allegedly] wrote: ...

I don't think that post was really from MAL.  It seems to be a sporgery
attack on the newsgroup.  Sigh.


From tjreedy at udel.edu  Sun May 15 14:36:36 2005
From: tjreedy at udel.edu (Terry Reedy)
Date: Sun, 15 May 2005 14:36:36 -0400
Subject: Mandrake 10.1 and Python 2.3.4
References: <AsGhe.3663$E7.3600@news-server.bigpond.net.au>
Message-ID: <d684r1$chp$1@sea.gmane.org>


"Joal Heagney" <jhe13586 at bigpond.net.au> wrote in message 
news:AsGhe.3663$E7.3600 at news-server.bigpond.net.au...
> 'import site' failed; traceback:
> Traceback (most recent call last):
>   File "/usr/lib/python2.3/site.py", line 169, in ?
>     sys.lib,
> AttributeError: 'module' object has no attribute 'lib'

Right: the sys module usually has no .lib attribute that I know of

>>> import sys; sys.lib
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
AttributeError: 'module' object has no attribute 'lib'

> Is this a Mandrake or a Python mistake?

It is a site.py code mistake, but who wrote your copy of site.py?

> And does anyone know how to fix it?

Correct or remove the offending line (169)

Terry J. Reedy





From mcaloney at cs.queensu.ca  Tue May  3 22:27:09 2005
From: mcaloney at cs.queensu.ca (Chris McAloney)
Date: Tue, 3 May 2005 22:27:09 -0400
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <OdTde.2823$Cz3.434824@monger.newsread.com>
References: <d4u60o$akh$1@news2.netvision.net.il>
	<mailman.47.1114818531.14961.python-list@python.org>
	<3dg5isF6qe1nhU1@news.dfncis.de>
	<d4v1an$j7q$1@sea.gmane.org> <1f7befae05043000165448b8d@mail.gmail.com>
	<mailman.55.1114846630.14961.python-list@python.org>
	<Pine.SOL.4.33.0505031353330.17143-100000@innovate>
	<OdTde.2823$Cz3.434824@monger.newsread.com>
Message-ID: <Pine.SOL.4.33.0505032224200.28656-100000@innovate>

On Tue, 3 May 2005, Leif K-Brooks wrote:

> Chris McAloney wrote:
> > Okay, so I've been working on level seven for a LONG time now.  I've
> > decoded the first message to get the hint for the next level.  Using the
> > same tactics, then I decode the hint as well, but there are non-printable
> > characters.
>
> Frira be srjre pbcvrf bs gur fnzr cvkry va n ebj ner bar punenpgre, ohg
> rvtug cvkryf ner gjb punenpgref.

Oh dear.  I would **never** have gotten this on my own.  I mean that, too,
since I discarded adjacent duplicates and used the "trimmed"
(equivalently: "wrong") version as my ground truth.

Thanks very much.

-chris

... and now on to number eight ...




From sklass at pointcircle.com  Tue May 31 18:42:03 2005
From: sklass at pointcircle.com (rh0dium)
Date: 31 May 2005 15:42:03 -0700
Subject: Problem with re.match - Newbie needs some advice
Message-ID: <1117579323.153831.118090@f14g2000cwb.googlegroups.com>

Hi all,

I am having a problem with the method cpuNum.  Basically I look to see
if the "flag" for "ht" is enabled.  If it is the total processors
should be cpucount/2.  It's not working.  I can't seem to get into the
second re.match.  Can someone point out my apparent error?

class Sysinfo:
    def __init__(self, cpuinfo="/proc/cpuinfo",
meminfo="/proc/meminfo"):
        cpustat = open(cpuinfo)
        self.cpudata = cpustat.readlines()
        cpustat.close()

    def cpuNum(self):
        cpucount=0
        ht=0
        for line in self.cpudata:
            # Remove the newlines..
            line=line.strip()
            if re.match(r"^processor\s+:", line):
                cpucount += 1
            if re.match(r"^flags\s+:", line):
                flags=re.split(r":\s",line)
                #print "Found flags", flags[1]
                if re.match(r"\bht\b",flags[1]):
                    print "HT on"
                    ht=1
        if ht:
            return cpucount/2
        else:
            return cpucount

s = Sysinfo( cpuinfo="cpuinfo.1", meminfo="meminfo.1" )
print s.cpuNum()


---- cpuinfo.1 (abbreviated) ----
processor       : 0
flags           : cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss
ht tm pbe cid

processor       : 1
flags           : cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss
ht tm pbe cid



From Bernd.Nawothnig at t-online.de  Sun May 15 14:08:17 2005
From: Bernd.Nawothnig at t-online.de (Bernd Nawothnig)
Date: Sun, 15 May 2005 20:08:17 +0200
Subject: Schily ueber Deutschland
References: <mailman.22.1116170676.15315.python-list@python.org>
Message-ID: <hpfkl2-303.ln1@Bernd.Nawothnig.dialin.t-online.de>

On 2005-05-15, mal at lemburg.com wrote:

> Lese selbst:
> http://www.heise.de/newsticker/meldung/59427

Ja, schlimm.

Trotzdem ist das hier

a) eine englischsprachige NG und
b) geht es hier um die Programmiersprache Python

Lass es also bitte endlich!



Bernd

-- 
Those who desire to give up freedom in order to gain security,
will not have, nor do they deserve, either one. [T. Jefferson]


From brian at sweetapp.com  Wed May 11 08:49:27 2005
From: brian at sweetapp.com (Brian Quinlan)
Date: Wed, 11 May 2005 14:49:27 +0200
Subject: Interactive shell for demonstration purposes
In-Reply-To: <1115814028.259365.98710@g49g2000cwa.googlegroups.com>
References: <1115814028.259365.98710@g49g2000cwa.googlegroups.com>
Message-ID: <4281FF57.4010507@sweetapp.com>

Can anyone recommend a Python interactive shell for use in presentations?

Ideal characteristics (priority order):
o configurable font size
o full screen mode
o readline support
o syntax coloring

I've tried ipython but, since it runs inside a console window, and the 
console window has a limited number of selectable fonts, it doesn't 
work terribly well.

I've seen presentations using some sort of PyGame implemented shell. 
Does anyone have an information on that?

Cheers,
Brian


From fredrik at pythonware.com  Thu May 26 06:49:14 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 26 May 2005 12:49:14 +0200
Subject: assignment, references and list comprehension
References: <d748km$1l4$1@scotsman.ed.ac.uk>
Message-ID: <d749fk$9fa$1@sea.gmane.org>

"Jim O'D" wrote:

> I was confused as to whether the assignment of a result of a list
> comprehension created references to the orginal objects...

python never copies objects unless you tell it to, so the answer is yes.  all
the "values" you pass around are object references, not binary blobs.

> and it does (at least for my self-defined object).

trust me, it works the same way for all objects.

reading this may help:

    http://effbot.org/zone/python-objects.htm

</F> 





From elbertlev at hotmail.com  Sun May  8 14:38:12 2005
From: elbertlev at hotmail.com (elbertlev at hotmail.com)
Date: 8 May 2005 11:38:12 -0700
Subject: Database backend?
In-Reply-To: <427e55e3$0$79463$14726298@news.sunsite.dk>
References: <427e55e3$0$79463$14726298@news.sunsite.dk>
Message-ID: <1115577492.721712.144310@o13g2000cwo.googlegroups.com>

Look for the packet called "KirbyBase". Small, pythonic, text based
files...



From nospam at here.com  Mon May 16 13:20:30 2005
From: nospam at here.com (Matt Feinstein)
Date: Mon, 16 May 2005 13:20:30 -0400
Subject: Applying a function to a 2-D numarray
References: <nb7h81hqrgbd2kofg48tlt8oaicv34iuh9@4ax.com>
	<I_Sdnfv3isSrThXfRVn-vQ@comcast.com>
Message-ID: <7flh81d00feulgkdfdrh69rbgp4v36mqtl@4ax.com>

On Mon, 16 May 2005 11:07:06 -0600, Steven Bethard
<steven.bethard at gmail.com> wrote:


>
>I must be missing something, because the simplest possible thing seems 
>to work for me:
>
>py> import numarray as na
>py> def plus1(arr):
>...     return arr + 1
>...
>py> def apply_func(arr, f):
>...     return f(arr)
>...
>py> a = na.arange(20, shape=(4, 5))
>py> a
>array([[ 0,  1,  2,  3,  4],
>        [ 5,  6,  7,  8,  9],
>        [10, 11, 12, 13, 14],
>        [15, 16, 17, 18, 19]])
>py> apply_func(a, plus1)
>array([[ 1,  2,  3,  4,  5],
>        [ 6,  7,  8,  9, 10],
>        [11, 12, 13, 14, 15],
>        [16, 17, 18, 19, 20]])
>
>Is this not what you wanted?

The problem is that I chose an example function that's too simple.
Non-trivial functions aren't so polymorphic, unfortunately.

Sorry for the confusion.

Matt Feinstein

--
There is no virtue in believing something that can be proved to be true.


From geraldhereford at yahoo.com  Sun May 15 16:29:31 2005
From: geraldhereford at yahoo.com (gerald hereford)
Date: Sun, 15 May 2005 13:29:31 -0700 (PDT)
Subject: No subject
Message-ID: <20050515202931.10762.qmail@web60320.mail.yahoo.com>

 
 

__________________________________________________
Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around 
http://mail.yahoo.com 


From jabel at plus.net  Thu May 12 03:53:37 2005
From: jabel at plus.net (John Abel)
Date: Thu, 12 May 2005 08:53:37 +0100
Subject: Defunct Processes With subprocess.Popen
In-Reply-To: <86u0l9kqhk.fsf@guru.mired.org>
References: <mailman.331.1115800200.29826.python-list@python.org>
	<86u0l9kqhk.fsf@guru.mired.org>
Message-ID: <42830B81.7060302@plus.net>

Mike Meyer wrote:

>John Abel <jabel at plus.net> writes:
>
>  
>
>>Hi!
>>
>>I'm currently writing a script which launches external programs, but
>>it keeps leaving zombie/defunct processes behind, until I kill the
>>launching script, which is a bit of a pain, as it's supposed to be a
>>daemon.  The code I'm using is:
>>
>>newPid = subprocess.Popen( cmdLine[ 1: ], executable=cmdLine[ 0 ],
>>close_fds=True ).pid
>>
>>I've tried calling it using the shell=True flag, but that leaves a
>>zombie for the sh, instead.  I'm not interested in any output, the
>>only thing I need returning, is the pid of the new process.  I've
>>tried using spawn*, with the same results.  Does anyone have any ideas?
>>    
>>
>
>The processes are hanging around in a zombie state so the parent (or
>someone) can get their exit status.
>
>Try calling os.wait() until it returns the exit status for all the
>processes you've started.
>
>          <mike
>  
>
Ahh, OK.  Thanks for that.  Works now.

J


From just at xs4all.nl  Sat May  7 05:05:47 2005
From: just at xs4all.nl (Just)
Date: Sat, 07 May 2005 11:05:47 +0200
Subject: py2exe + svn - the final drama
References: <427AD7E8.1060500@open-networks.net>
	<mailman.96.1115384045.29826.python-list@python.org>
	<uoebojc8g.fsf@fitlinxx.com>
	<just-075293.00240707052005@news1.news.xs4all.nl>
	<uacn8j5yr.fsf@fitlinxx.com>
Message-ID: <just-DA5271.11054707052005@news1.news.xs4all.nl>

In article <uacn8j5yr.fsf at fitlinxx.com>,
 David Bolen <db3l at fitlinxx.com> wrote:

> Just <just at xs4all.nl> writes:
> 
> > the zipimport module has an attr called _zip_directory_cache, which is a 
> > dict you can .clear(). Still, reloading modules is hairy at best, its 
> > probably easiest to relaunch your app when the .zip file has changed.
> 
> Except that he's getting an error during the process exit of the
> current execution, which is needed to restart.  And if he updates to a
> different copy, there's the bootstrap problem of how to get it back
> into the standard location for the next restart since his application
> will need to have it to restart in the first place.

Right. It sounds like a module is imported at exit that wasn't imported 
before. If that's the case, it may help to make sure all modules needed 
for exit are imported beforehand.

Just


From steven.bethard at gmail.com  Thu May 19 16:50:37 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Thu, 19 May 2005 14:50:37 -0600
Subject: Convert from numbers to letters
In-Reply-To: <mailman.230.1116535245.8733.python-list@python.org>
References: <1116511005.900715.107260@o13g2000cwo.googlegroups.com>	<mailman.209.1116513780.8733.python-list@python.org>	<1116528750.285895.27720@f14g2000cwb.googlegroups.com>	<mailman.223.1116529228.8733.python-list@python.org>	<1116530403.328825.216120@z14g2000cwz.googlegroups.com>	<mailman.225.1116531601.8733.python-list@python.org>	<d6iqe5$rgt$01$1@news.t-online.com>	<797fe3d405051913022e35c7c6@mail.gmail.com>	<428CF3FF.8050403@ece.utexas.edu>
	<mailman.230.1116535245.8733.python-list@python.org>
Message-ID: <3sGdnaxJM5aDYRHfRVn-hA@comcast.com>

Gary Wilson Jr wrote:
> Gary Wilson Jr wrote:
> 
>>alpha = 'abcdefghijklmnopqrstuvwxyz'.upper()
>>pairs = [x for x in alpha] + [''.join((x,y)) for x in alpha for y in alpha]
> 
> I forget, is string concatenation with '+' just as fast as join()
> now (because that would look even nicer)?

Certain looping constructs like:

x = ''
for y in z:
     x += y

are now (in CPython 2.4) somewhere near the speed of:

x = []
for y in z:
     x.append(y)
x = ''.join(x)

but this isn't really relevant to your problem because you're only 
joining two characters:

$ python -m timeit -s "import string; a = string.ascii_uppercase" 
"[''.join([x, y]) for x in a for y in a]"
1000 loops, best of 3: 1.02 msec per loop

$ python -m timeit -s "import string; a = string.ascii_uppercase"
"[x + y for x in a for y in a]"
1000 loops, best of 3: 295 usec per loop

Unsurprisingly, it's actually faster to simply concatenate the two 
characters.

STeVe


From luis_lupe2XXX at netvisaoXXX.pt  Fri May 13 10:58:16 2005
From: luis_lupe2XXX at netvisaoXXX.pt (Luis P. Mendes)
Date: Fri, 13 May 2005 15:58:16 +0100
Subject: Dive into Python java equivalent
Message-ID: <3ejtkbF3ifbnU1@individual.net>

Hi,

do you know if is there any 'Dive into Python' equivalent for the java 
language?

DiP is the best I've seen and I would need to learn some basics of Java 
and also ways to interact between the two languages. (I'm already aware 
of Jpype and Jython)

Luis


From ccurvey at gmail.com  Mon May  2 13:19:17 2005
From: ccurvey at gmail.com (Chris Curvey)
Date: 2 May 2005 10:19:17 -0700
Subject: xmlrpc server running behind IIS as a CGI
Message-ID: <1115054357.061932.322300@z14g2000cwz.googlegroups.com>

Here's my server:

import os
import SimpleXMLRPCServer

class Foo:
    def settings(self):
        return os.environ
    def echo(self, something):
        return something
    def greeting(self, name):
        return "hello, " + name

handler = SimpleXMLRPCServer.CGIXMLRPCRequestHandler()
handler.register_instance(Foo())
handler.handle_request()

If I run this behind Apache/CGI, everything works fine.  If I run this
behind IIS/CGI, everything hangs when I call the server  (I have
confirmed that a "hello world" program runs fine thru CGI when called
via a web browser).

Here's the client program:

import xmlrpclib
server = xmlrpclib.ServerProxy("http://127.0.0.1:81/cms/Foo.py")
print server.settings()



From Pidaqing at mail.iame.cn  Thu May 12 23:33:21 2005
From: Pidaqing at mail.iame.cn (=?gb2312?B?xqS088fs?=)
Date: Fri, 13 May 2005 11:33:21 +0800
Subject: property, how to use it?
Message-ID: <20050514012648.C48572886F@mail.iame.cn>

python????
      What is the "property" mean in the python? Who can explain it for me? 
I don't know how to use it.
	

?????????
??
 				

???????????
????????Pidaqing at mail.iame.cn
??????????2005-05-13

From steve at holdenweb.com  Mon May  2 22:32:44 2005
From: steve at holdenweb.com (Steve Holden)
Date: Mon, 02 May 2005 22:32:44 -0400
Subject: Forgot my wrapup of example!  Sorry!
In-Reply-To: <d55ivh$924$1@sea.gmane.org>
References: <1114709684.096071.109960@l41g2000cwc.googlegroups.com>
	<d55ivh$924$1@sea.gmane.org>
Message-ID: <4276E2CC.6030001@holdenweb.com>

GMane Python wrote:
> So, I forgot the last part of my example that might gel in your mind why
> Objects are useful in certain situations.  Ok so you maybe followed my
> example of the shopping cart.  Let's just forget for a moment the use for
> shopping carts is for  websites.  Let's just say you were going to write the
> lines directly into Python, like maybe at the IDLE interpreter.  Like maybe
> you're testing the functionality of the routine for correctness, not actual
> implementation.
> 
> 
[good introductory class stuff snipped]
> 
> 
> In a class, you can have a variable 'total' and you can have a variable
> 'self.total'.  The first is just accessible from within the structure of the
> class.  The latter is accessible from outside the class.  So, using a class
> with the variable self.total, you can from outside the class say:
> 
> 
> 
> print ShoppingCart["Dave"].total
> 
> 
> 
> to get the value of the variable self.total.  (That had me buggered for a
> while ..... )
> 
Thanks for the smile this gave me. We all get to this stage periodically 
when programming.
> 
> 
> If you can wrap your mind around this, you're well on your way to using OOP
> I believe.  If not, , don't give up. I'm just a python/programming newbie
> and maybe missed the boat completely with my posting.
> 
Well maybe you did, but you actually managed to demonstrate important 
parallels between namespaces and dictionaries in Python.
> 
> 
> Another quite important part I didn't even mention was sub-classing.  That's
> taking a class, and 'inheriting' it's code to your class as a base, then you
> can re-write or adddifferent methods.  But, first I think it's important to
> understand how to have several instances of a single class running in
> memory, each with different values for the defined variables.  I'll let
> someone else talk about that.
> 
As indeed they almost inevitably will :-)

regards
  Steve
-- 
Steve Holden        +1 703 861 4237  +1 800 494 3119
Holden Web LLC             http://www.holdenweb.com/
Python Web Programming  http://pydish.holdenweb.com/



From jjl at pobox.com  Tue May 17 15:30:53 2005
From: jjl at pobox.com (John J. Lee)
Date: 17 May 2005 19:30:53 +0000
Subject: Python on a public library computer
References: <1116069664.779281.320540@g47g2000cwa.googlegroups.com>
	<87r7g6rbz0.fsf@pobox.com>
	<1116329666.566651.42950@z14g2000cwz.googlegroups.com>
Message-ID: <87sm0lk5ua.fsf@pobox.com>

"Anton Vredegoor" <anton.vredegoor at gmail.com> writes:

> John J. Lee wrote:
> 
> > Why not Jython?
> 
> There's no command prompt! The file menu from IE is also gone. There is
> a sun Java console but it looks like this:
[...]

ISTR (maybe incorrectly) there's a Jython shell you can run in IE.


John


From rbt at athop1.ath.vt.edu  Wed May  4 08:33:31 2005
From: rbt at athop1.ath.vt.edu (rbt)
Date: Wed, 04 May 2005 08:33:31 -0400
Subject: sha-2 and sha-512 bindings
In-Reply-To: <d5a861$1eek$1@news.vol.cz>
References: <d5a861$1eek$1@news.vol.cz>
Message-ID: <d5afer$4nb$1@solaris.cc.vt.edu>

Almad wrote:
> Hi, 
> 
> is there any python bindings for sha-2 or sha-512? 
> 
> Pycrypto seems to have only sha-1 bindings and I can't see any other package
> on net...
> 
> Thanks, 

On Debian GNU\Linux Testing, Python2.3-crypto contains sha256 hashing.

http://packages.debian.org/testing/python/python2.3-crypto



From fredrik at pythonware.com  Thu May 26 10:34:18 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 26 May 2005 16:34:18 +0200
Subject: using timeit for a function in a class
References: <ZFjle.101596$KL7.6197297@phobos.telenet-ops.be>
Message-ID: <d74mlh$kcg$1@sea.gmane.org>

"flupke" wrote:

> i tried to use timeit on a function in a class but it doesn't do what i
> think it should do ie. time :)
> In stead it starts printing line after line of hello time test!
> What am i doing wrong in order to time the f function?

how do you expect timeit to figure out how long it takes to run your
function without calling the function?

> class TimeTest(object):
>     def f(self):
>         print "hello time test!"

</F> 





From benji at benjiyork.com  Sat May 28 16:54:59 2005
From: benji at benjiyork.com (Benji York)
Date: Sat, 28 May 2005 16:54:59 -0400
Subject: a dict problem
In-Reply-To: <1117300484.637674.97430@f14g2000cwb.googlegroups.com>
References: <1117300484.637674.97430@f14g2000cwb.googlegroups.com>
Message-ID: <4298DAA3.3080601@benjiyork.com>

cheng wrote:
 > hi all..it a problem about dict:
 >
 > print target, dict[target]
 >
 > get output:
 >
 > keyword
 > {page3.html, page2.html, page1.html}
 >
 > is it some ways to change it to:
 >
 > keyword
 > {page1.html, page2.html, page3.html}

First, I would recommend you always post actual code and its output.
It is much easier for people to help you that way.  Also, "dict" is
not a good variable name because it shadows the built-in of the same
name.

I'll extrapolate from your message that you want to get the values of
the dict in sorted order.  If so, here's how:

 >>> d = {'a': 1, 'b': 2, 'c':3}
 >>> d
{'a': 1, 'c': 3, 'b': 2}
 >>> v = d.values()
 >>> v
[1, 3, 2]
 >>> v.sort()
 >>> v
[1, 2, 3]
--
Benji York


From querypk at gmail.com  Thu May 26 11:25:35 2005
From: querypk at gmail.com (querypk at gmail.com)
Date: 26 May 2005 08:25:35 -0700
Subject: Improve the performance of a loop
In-Reply-To: <I-WdnXO_coVvlAjfRVn-vg@comcast.com>
References: <1117058565.920549.221420@g47g2000cwa.googlegroups.com>
	<I-WdnXO_coVvlAjfRVn-vg@comcast.com>
Message-ID: <1117121135.549427.144480@g44g2000cwa.googlegroups.com>

Actually slicing the way you suggested improved it to some extent. I
did profile on this and I observed that it reduced the number of calls
for __get_item__ and improved the timing to some extent. Which was
useful to some extent.

Thanks again.



From lbates at syscononline.com  Mon May  9 11:06:58 2005
From: lbates at syscononline.com (Larry Bates)
Date: Mon, 09 May 2005 10:06:58 -0500
Subject: include "apythonscript.py"
In-Reply-To: <1115648730.390588.158760@z14g2000cwz.googlegroups.com>
References: <1115648730.390588.158760@z14g2000cwz.googlegroups.com>
Message-ID: <usCdnd5sDrXs4eLfRVn-rQ@comcast.com>

How about?

put apythonscript_function.py in a separate file

then

inculde apythonscript_function.py at the top of maincode.py

Looks like you probably need to go back and read the tutorial.

-Larry

martijn at gamecreators.nl wrote:
> H!
> 
> I'm trying to find a python function to use like this:
> 
> -- maincode.py
> 
> Include "apythonscript_function.py"
> 
> -- end
> 
> So I can split the maincode.py file in smalle pieces.
> Or yust save the function's in other file and include them once.
> I really want to use this because else { the maincode.py will be super
> super large. }
> 
> Thanks,
> GC-Martijn
> 
> ----- if you don't understand what I mean: http://www.php.net/include
> 


From dominic.fox at gmail.com  Mon May  2 05:54:07 2005
From: dominic.fox at gmail.com (Dominic Fox)
Date: Mon, 2 May 2005 10:54:07 +0100
Subject: Tripoli: a Python-based triplespace implementation
In-Reply-To: <mailman.9.1114999502.6582.python-list@python.org>
References: <mailman.9.1114999502.6582.python-list@python.org>
Message-ID: <f278b21305050202544b4bd11d@mail.gmail.com>

karouri wrote:

> Interesting, but I wonder if you are aware of pylinda
> (http://www-users.cs.york.ac.uk/~aw/pylinda/) and if so, what's the
> difference?

Tripoli trades off some of the generality of PyLinda in order to
support some performance tweaks and some additional graph-related
operations.

Tripoli restricts the tuple space model implemented by PyLinda to
3-tuples, and extends it by adding copy_graph and copy_collect_graph
operations to copy and move graphs of triples from one triple space to
another.

PyLinda allows you to pattern match on types, which is really neat but
makes index-based tuple lookups impractical. Tripoli matches literals
or wildcards only, but it indexes every triple on all three components
so in theory it should be quicker at finding triples, matching blocked
requests to incoming triples and so on. Performance is fairly good
even with large-ish (10000+). triple sets.

Some other respects in which I think Tripoli is different, but aren't
familiar enough with PyLinda to say for certain:

Tripoli uses callbacks to notify waiting requestors that a matching
triple has arrived. Requestors can block waiting for a callback, or
continue about their business and handle the callback only when it
occurs. Communication between the Tripoli client and server is
asynchronous: the client sends a triple request, and at some point in
the future the server may contact the client to send a response back.
The REST-ful version will also support client polling of a temporary
resource representing a pending request.

Tripoli will eventually support RDF/XML as a format for importing and
exporting triples.

Dominic


From onfrek at yahoo.com  Sun May 29 05:15:32 2005
From: onfrek at yahoo.com (Michael Onfrek)
Date: 29 May 2005 02:15:32 -0700
Subject: Copy paste in entry widget
In-Reply-To: <mailman.225.1117320375.18027.python-list@python.org>
References: <1117200716.423741.257870@f14g2000cwb.googlegroups.com>
	<mailman.225.1117320375.18027.python-list@python.org>
Message-ID: <1117358132.626957.306560@z14g2000cwz.googlegroups.com>

I need it for Linux, so far only TkInter used.



From rkern at ucsd.edu  Fri May 13 12:53:16 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Fri, 13 May 2005 09:53:16 -0700
Subject: create words of various lengths
In-Reply-To: <1116002403.374232.210220@g49g2000cwa.googlegroups.com>
References: <1116002403.374232.210220@g49g2000cwa.googlegroups.com>
Message-ID: <d62liu$rsm$1@sea.gmane.org>

superprad at gmail.com wrote:
> "X-No-Archive: yes"
> 
> what I am looking for is
> 
> 1. To create a list of different words of various lengths(1-15) using
> A-Z,a-z,0-9 and punctuations.Basically anything that could be found on
> a text document.
> 
> 2. The words formed need not be meaningful .FOr example 'ajf' or
> 'fcjgdtfhbs' or even 'gfdew!' or '#bang.' would be a valid entry in the
> list.
> 
> 3.So I am looking for a random set of words of sizes 1 to 15.The proble
> might be the time complexity. I inderstand that there would be too many
> permutations.

So why don't you take one step back and tell us what you think you need 
this list *for*? We might be able to come up with feasible alternatives.

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From bokr at oz.net  Mon May  2 21:49:54 2005
From: bokr at oz.net (Bengt Richter)
Date: Tue, 03 May 2005 01:49:54 GMT
Subject: empty lists vs empty generators
References: <509534af.0505021514.5e49aa2@posting.google.com>
Message-ID: <4276d193.519170387@news.oz.net>

On 2 May 2005 16:14:57 -0700, brian at mirror.org (Brian Roberts) wrote:

>I'm using using generators and iterators more and more intead of
>passing lists around, and prefer them.  However, I'm not clear on the
>best way to detect an empty generator (one that will return no items)
>when some sort of special case handling is required.
>
>Typical code for handling an empty list:
>    if somelist:
>        for x in somelist: 
>            something(x)
>    else:
>        empty_list_special_case
>
>But this doesn't work with iterators -- a generator is "true"
>regardless of whether its going to return any items.  (I understand
>why).
>
>The closest equivalent I know of is:
>    n = 0
>    for n, x in enumerate(somegenerator()):
>       something(x)
>    if n == 0:
>       empty_list_special_case
>
>Which seems rather awkward -- doesn't read as easily for me, and
>introduces another variable.
And, if I understood the intent, doesn't work ;-)

 >>> n = 0
 >>> for n, x in enumerate(c for c in 'a'):
 ...     print 'something', x
 ...
 something a
 >>> if n == 0:
 ...     print 'empty list special case ??'
 ...
 empty list special case ??

You could have used n = -1 as a sentinel that enumerate would not set,
but using a guaranteed-unique sentinel, you don't need enumerate, e.g.,

 >>> x = sentinel = object()
 >>> for x in (c for c in 'a'):
 ...     print 'something', x
 ...
 something a
 >>> if x is sentinel:
 ...     print 'empty list special case ??'
 ...

(nothing printed there)
and for the actually empty sequence

 >>> x = sentinel = object()
 >>> for x in (c for c in ''):
 ...     print 'something', x
 ...
 >>> if x is sentinel:
 ...     print 'empty list special case ??'
 ...
 empty list special case ??

>
>Q1: Is there a better or alternate way to handle this?
>Q2: Is there a way that handles both lists and generators, so I don't
>have to worry about which one I've got?
>
UIAM this should work for any iterable. You don't have to manufacture
a locally bound sentinel as above. You could pick anything to preset
the for-target that you know is not going to be produced by the iterable,
though you might need to use '==' instead of 'is' depending on your choice.
But e.g., I don't think I'd write

    x = Exception  # weird sentinel choice
    for x in mystring:
       print x, ord(x)
    if x is Exception:
       print 'null sequence'

None probably works well a lot of the time, but not always.
Similarly ''. Seems like a builtin sentinel binding like sentinel = object()
might be handy to standardize usage.

Regards,
Bengt Richter


From ionel.mc at gmail.com  Mon May 30 06:19:02 2005
From: ionel.mc at gmail.com (ionel)
Date: Mon, 30 May 2005 12:19:02 +0200
Subject: where can i find pylibpcap module for win32?
In-Reply-To: <d7egmv$v10$1@mail.cn99.com>
References: <d7egmv$v10$1@mail.cn99.com>
Message-ID: <b322b4e60505300319456e8251@mail.gmail.com>

i've compiled a pcapy
http://lenoi.3x.ro/
works fine ( using it :) )

On 5/30/05, jerky <li.qj at 126.com> wrote:
> thanks for your any imformation.
> 
> 
> --
> http://mail.python.org/mailman/listinfo/python-list
> 


-- 
ionel.


From exarkun at divmod.com  Fri May 27 13:57:18 2005
From: exarkun at divmod.com (Jp Calderone)
Date: Fri, 27 May 2005 17:57:18 GMT
Subject: lambda a plusieurs arguments
In-Reply-To: <42975b1a$0$26423$626a14ce@news.free.fr>
Message-ID: <20050527175718.559.192528752.divmod.quotient.11246@ohm>

On Fri, 27 May 2005 19:38:33 +0200, nico <nospam at spam.fr> wrote:
>Bonjour,
>
>Comment faire une fonction lambda a plusieurs arguments ?
>
>>>> (lambda a:a+1)(2)
>3
>>>> f=(lambda (a,b):a+b)
>>>> f(5,6)
>Traceback (most recent call last):
>  File "<stdin>", line 1, in ?
>TypeError: <lambda>() takes exactly 1 argument (2 given)
>>>> f((5.6))
         ^--- ,

    >>> f((5, 6))
    11
    >>>

Aussi,

    >>> f = lambda a, b: a + b
    >>> f(5, 6)
    11
    >>>

Jp


From fumanchu at amor.org  Sun May 15 18:27:20 2005
From: fumanchu at amor.org (Robert Brewer)
Date: Sun, 15 May 2005 15:27:20 -0700
Subject: Is isinstance always "considered harmful"?
Message-ID: <3A81C87DC164034AA4E2DDFE11D258E37720AE@exchange.hqamor.amorhq.net>

Jordan Rastrick wrote:
> Subject: Is isinstance always "considered harmful"?
> 
> Say you're writing,
> in Python, the extend() method for a Linked List version of python's
> builtin list. Its really important to know what kind of iterable youre
> being passed in - because if its another Linked list, and you know it,
> you can connect the two in 0(1) time; whereas any other arbitrary
> iterable is going to take 0(n), as you're just going to have to append
> the items one by one. Is this a case where use of isinstance, to see
> exactly what kind of Iterable you have, can be justified?

I'd say so, definitely.

> There are other solutions I can think of - perhaps the least 
> hideous is factoring out the 0(1), "point last to first" code
> in a separated method, __linkedExtend() or something, and then
> do something similar to the above by using an exception,
> like this:
> 
> def extend(self, elems):
>    try:
>       self.__linkedExtend(elems)
>    catch NotALinkedListError:
>       for elem in elems: self.append(elem)
> 
> I dont know, I don't really like this (although it is more BAFP than
> the first version, so maybe that makes it more Pythonic?).

You've decided to special-case a binary operation based on the type of
*both* objects. Whether you use isinstance or __linkedExtend, you're
still providing a single-dispatch mechanism, which gets uglier in
proportion to the number of types involved. Meh. I'd go with isinstance
for now. Your use case is exactly why it's in the language, IMO.

If the number of types you're special-casing becomes unwieldy, you might
be interested in multiple-dispatch approaches (cf
http://gnosis.cx/publish/programming/charming_python_b12.html) and
generic functions (cf
http://dirtsimple.org/2004/11/generic-functions-have-landed.html).


Robert Brewer
System Architect
Amor Ministries
fumanchu at amor.org

> To me,
> instanceof seems like the infimum of all possible evils in this case.
> 
> It'd be nice if I'd seen the source code for Python's builtin list to
> see if any of these kind of considerations are taken into 
> account there
> (ultra fast array copying in C when extend is called on another list,
> perhaps)? Luckily, one of the great gifts of Python is I can indeed
> look at the source for the entire langauge at any time I want. So I'm
> going to go read it (my first time, how exciting!), and in the
> meantime, I'll let replies start accumulating froma  whole lot of
> people who are a lot smarter and more experience in Python than myself
> :)
> 
> Several-weeks-in-and-still-liking-Python-better-than-any-other
> -previously-learned-language-ly
> yours,
> Jordan Rastrick
> 
> -- 
> http://mail.python.org/mailman/listinfo/python-list
> 


From tjreedy at udel.edu  Wed May 25 21:46:09 2005
From: tjreedy at udel.edu (Terry Reedy)
Date: Wed, 25 May 2005 21:46:09 -0400
Subject: "...Learning with Python" ...a property that addition
	andmultiplication have...
References: <1117067025.233387.323910@z14g2000cwz.googlegroups.com>
Message-ID: <d739le$s94$1@sea.gmane.org>


<jeffbernstein at yahoo.com> wrote in message 
news:1117067025.233387.323910 at z14g2000cwz.googlegroups.com...
> Greetings.
>
> I'm reading "How to think like a computer scientist: Learning with
> Python" and there's a question regarding string operations. The
> question is, "Can you think of a property that addition and
> multiplication have that string concatenation and repetition do not?"
>
> I thought it was the commutative property but "<string>"*3 is
> equivalent to 3*"<string>". Any ideas?

Go back to concatenation instead of repetition.

TJR





From mefjr75 at hotmail.com  Sat May 14 13:44:30 2005
From: mefjr75 at hotmail.com (M.E.Farmer)
Date: 14 May 2005 10:44:30 -0700
Subject: A new to Python question
References: <1116088663.428932.130860@g43g2000cwa.googlegroups.com>
Message-ID: <1116092670.420301.196570@o13g2000cwo.googlegroups.com>

David wrote:
> Hi I'm trying to teach myself python and so far to good, but I'm
having
> a bit of trouble getting a function to work the way I think it should
> work.  Right now I'm taking a simple program I wrote in Fortran and
> trying to do it in Python.  I got it to work, but now I'm trying to
> modularize it.  My fortran program uses a subroutine and I was trying
> to do the same thing in Python.  But I'm still new so I'm having
> trouble understanding what I'm doing wrong.  Here is my code:
>
> #! /usr/bin/python
> #This program takes two vectors and multiplies them
> #against a 10X10 array.  It also then gives the dot product,
> #sum, and max value of the array.
>
> import Numeric
> def abc(array1,array2,dotprod,sum,maxvalue):
>     """Takes two arrays and performs predetermined calculations,
>        Then returns the solutions back as the same array, along
>        with the dot product, sum, and max value of the array."""
>     #TODO: Get this damn thing working!!
>     print "Array 1 in:",array1 #Debug
>     data = Numeric.zeros((10,10))
>     for i in range(10):
>         for j in range(10):
>             data[i,j] = (i+1)+(j+1)
>
>     e = Numeric.matrixmultiply(data, array1)
>     g = Numeric.matrixmultiply(Numeric.transpose(data),array2)
>     array1 = e
>     array2 = g
>     dotprod = Numeric.dot(array1,array2)
>     sum = Numeric.sum(array1)
>     maxvalue = array2[Numeric.argmax(array2)]
>     print "Array 1 out:",array1 #Debug
>
>     return array1,array2,dotprod,sum,maxvalue #<<-- Not working as I
> thought it would.
>
> x = Numeric.arange(1,11)
> y = Numeric.arange(1,11)*2
> dotp,sumx,maxv = 0,0,0  #Is this the only way to declare a variable?
>
> print 'Array X:',x
> print 'Array Y:',y
> abc(x,y,dotp,sumx,maxv)
> print 'Calling function abc'
> print 'Array X:',x
> print 'Array Y:',y
> print 'Dot Product of X and Y:',dotp
> print 'Sum of array X:',sumx
> print 'Max value of array Y:',maxv
>
> If you run it the data gets passed to the function just fine and it
> finds the right numbers.  Its just getting it to pass them back thats
> not working.  I put some print statements inside the function just to
> see how the data gets passed.  So any ideas that would help me? If
you
> want to see the fortran code just email me.
>
> David

Hello David,
   welcome to Python!
Python always returns 'something' from a function or method if nothing
is specified or there is no return you get an implicit None.
You have created a function that accepts a few arguments and processes
them then returns there value.
The problem is that you **have not** used the return values ;)
example:

def funk(first,second,third):
    return first,second,third

This can be like this:
print funk("theses three args can be anything",2,"three")

If you need to use the return values you need to assign them to a
"name" so you have a handle on them.
Variables are don't exist in Python there are only objects and names(
hence namespaces ), but not everyone is so strict and you still see
mention of 'variables' when they mean 'names'.
> ##dotp,sumx,maxv = 0,0,0  # not needed here
> print 'Array X:',x
> print 'Array Y:',y
> ## Notice we assign the return values to names so we can access it
later
> arr1,arr2,dotp,sumx,maxv = abc(x,y,0,0,0)
> print 'Calling function abc'
> print 'Array X:',arr1
> print 'Array Y:',arr2
> print 'Dot Product of X and Y:',dotp
> print 'Sum of array X:',sumx
> print 'Max value of array Y:',maxv

Or you could pack all return values into a tuple and access it thru
slices.
> ##dotp,sumx,maxv = 0,0,0  # not needed here
> print 'Array X:',x
> print 'Array Y:',y
> abcinfo = abc(x,y,0,0,0)
> print 'Calling function abc'
> print 'Array X:',abcinfo[0]
> print 'Array Y:',abcinfo[1]
> print 'Dot Product of X and Y:',abcinfo[2]
> print 'Sum of array X:',abcinfo[3]
> print 'Max value of array Y:',abcinfo[4]

Or you could use a dictionary, or etc...
The possibilities are endless.
Be sure to study up on namespaces, it will ease your Python woes.
Namespaces are the most fundamental part of Python that new users don't
understand. Namespace mastery will take you far.
Just remember there are only two scopes local and global ;)
http://docs.python.org
hth,
M.E.Farmer



From peter at engcorp.com  Mon May 16 12:59:12 2005
From: peter at engcorp.com (Peter Hansen)
Date: Mon, 16 May 2005 12:59:12 -0400
Subject: newbie - variable "buried in quotes"
In-Reply-To: <7pmdnSlf65zMTRXfRVn-2A@powergate.ca>
References: <1116260476.332975.87680@g49g2000cwa.googlegroups.com>
	<7pmdnSlf65zMTRXfRVn-2A@powergate.ca>
Message-ID: <b_ydnZRWVMLjTBXfRVn-iQ@powergate.ca>

Peter Hansen wrote:
> The % operator goes immediately after the string on which it operates:
> 
> gp.FeatureclassToCoverage_conversion("'Database
> Connections\\%s at GIS_srv-earth.sde\\GIS.GIS.Cadastral\\GIS.GIS.Parcels'
> POLYGON" % luser, prcl83, "", "DOUBLE")

Missed your buried question about line continuations.  Yes, there is 
one, and it's the conventional \ at the end of the line.

On the other hand, there are better approaches:

gp.FeatureclassToCoverage_conversion("'Database Connections"
     "\\%s at GIS_srv-earth.sde\\GIS.GIS.Cadastral\\GIS.GIS.Parcels'"
     "POLYGON" % luser, prcl83, "", "DOUBLE")

That, for example, uses the fact that adjacent strings are combined into 
one by the parser.  Since they are all enclosed in parentheses, they are 
considered "adjacent" even though they come on different lines without 
line continuation characters.

It's pretty rare to need to use \ to continue lines, unless it's just a 
style you don't mind or prefer.

(Personally, I'd write this differently.  Create a variable called path 
or something just above that line, doing the string substitution when 
you build it.  Then the call to FeatureclassToCoverage_conversion() can 
come all on one line using "path", even with its unwieldy name. :-)

-Peter


From mauriceling at acm.org  Sat May  7 00:03:34 2005
From: mauriceling at acm.org (Maurice LING)
Date: Sat, 07 May 2005 14:03:34 +1000
Subject: hard memory limits
References: <d5f9jl$k6d$1@domitilla.aioe.org>	<mailman.88.1115374567.29826.python-list@python.org>	<d5gphu$hij$1@domitilla.aioe.org>
	<mailman.115.1115419109.29826.python-list@python.org>
	<d5h4eb$g5v$1@domitilla.aioe.org> <427c258b.868346285@news.oz.net>
	<lpco719k5lttbn1m9jj3shi08q5h62oe45@4ax.com>
Message-ID: <d5hemh$a83$1@domitilla.aioe.org>

John Machin wrote:
> On Sat, 07 May 2005 02:29:48 GMT, bokr at oz.net (Bengt Richter) wrote:
> 
> 
>>On Sat, 07 May 2005 11:08:31 +1000, Maurice LING <mauriceling at acm.org> wrote:
>>
>>>It doesn't seems to help. I'm thinking that it might be a SOAPpy 
>>>problem. The allocation fails when I grab a list of more than 150k 
>>>elements through SOAP but allocating a 1 million element list is fine in 
>>>python.
>>>
>>>Now I have a performance problem...
>>>
>>>Say I have 3 lists (20K elements, 1G elements, and 0 elements), call 
>>>them 'a', 'b', and 'c'. I want to filter all that is in 'b' but not in 
>>>'a' into 'c'...
>>>
>>>
>>>>>>a = range(1, 100000, 5)
>>>>>>b = range(0, 1000000)
>>>>>>c = []
>>>>>>for i in b:
>>>
>>>...     if i not in a: c.append(i)
>>>...
>>>
>>>This takes forever to complete. Is there anyway to optimize this?
>>>
>>
>>Checking whether something is in a list may average checking equality with
>>each element in half the list. Checking for membership in a set should
>>be much faster for any significant size set/list. I.e., just changing to
>>
>>     a = set(range(1, 100000, 5))
>>
>>should help. I assume those aren't examples of your real data ;-)
>>You must have a lot of memory if you are keeping 1G elements there and
>>copying a significant portion of them. Do you need to do this file-to-file,
>>keeping a in memory? Perhaps page-file thrashing is part of the time problem?
> 
> 
> Since when was 1000000 == 1G??
> 
> Maurice, is this mucking about with 1M or 1G lists in the same
> exercise as the "vm_malloc fails when allocating a 20K-element list"
> problem? Again, it might be a good idea if you gave us a little bit
> more detail. You haven't even posted the actual *PYTHON* error message
> and stack trace that you got from the original problem. In fact,
> there's a possible interpretation that the (system?) malloc merely
> prints the vm_malloc message and staggers on somehow ...
> 
> Regards,
> John

This is the exact error message:

*** malloc: vm_allocate(size=9203712) failed (error code=3)
*** malloc[489]: error: Can't allocate region

Nothing else. No stack trace, NOTHING.

maurice


From saravanan.d at siemens.com  Tue May 10 03:52:52 2005
From: saravanan.d at siemens.com (Saravanan D)
Date: Tue, 10 May 2005 13:22:52 +0530
Subject: Exception in Python 2.3.3 Interpreter
References: <1114434259.853654.272420@z14g2000cwz.googlegroups.com><d5n76t$pe0$2@news.mch.sbs.de><mailman.202.1115642452.29826.python-list@python.org><d5ph21$2l9$2@news.mch.sbs.de>
	<mailman.252.1115707861.29826.python-list@python.org>
Message-ID: <d5pp8n$4mn$2@news.mch.sbs.de>


"Fredrik Lundh" <fredrik at pythonware.com> wrote in message
news:mailman.252.1115707861.29826.python-list at python.org...
> "Saravanan D" wrote:
>
> > > > 03 023ffaa4 1e013182 00000000 055b1250 00637470
python23!cmp_outcome(int
> > op
> > > > = 88026108, struct _object * v = 0x00000001, struct _object * w =
> > > > 0x00000000)+0xa9 [F:\Python-2.3.3\Python-2.3.3\Python\ceval.c @
3880]
> > > > 04 023ffb18 1e016ba4 014f3318 00000002 0099f170
> > python23!eval_frame(struct
> > > > _frame * f = 0x053f2bfc)+0x542
> > [F:\Python-2.3.3\Python-2.3.3\Python\ceval.c
> > > > @ 1965]
> > > > 05 023ffb30 1e016a69 0099f170 023ffb7c 00000002
> > > > python23!fast_function(struct _object * func = <Memory access
error>,
> > struct
> > > > _object *** pp_stack = <Memory access error>, int n = <Memory access
> > error>,
> > > > int na = <Memory access error>, int nk = <Memory access error>)+0x94
> > >
> > > the above doesn't look very healthy.  does your application involve
> > > non-standard extensions (including extensions you've written your-
> > > self)?  does the extensions contain callbacks into Python code?
> > >
> >
> > My application uses extension modules which devliers the callbacks to
Python
> > Code. Im using SWIG 1.3.19 version to generate relevant python
interfaces
> > for the C++ code.
>
> how are you accessing the callbacks?  if you're doing that from threads
> created at the C++ level, you must make sure that the thread state is
> properly set up.  see:

Callbacks have been called from the threads which are created in C++ code.
Before calling the callback, the thread state has been properly set  (as per
python documentation).  The application runs 3 to 4 days continuously with
out having any issues.  But, crash happens sparadically. (once in a week /
once in 4 days )



> do you keep track of the thread state, so that callbacks run in the
> same state as they were registered in?
>
> </F>
>
>
>




From pinard at iro.umontreal.ca  Sat May  7 12:10:46 2005
From: pinard at iro.umontreal.ca (=?iso-8859-1?Q?Fran=E7ois?= Pinard)
Date: Sat, 7 May 2005 12:10:46 -0400
Subject: Q: The `print' statement over Unicode
In-Reply-To: <427cc8b2$0$26179$9b622d9e@news.freenet.de>
References: <mailman.6.1115221576.29826.python-list@python.org>
	<acnbm18i.fsf@python.net>
	<mailman.135.1115467276.29826.python-list@python.org>
	<427cc8b2$0$26179$9b622d9e@news.freenet.de>
Message-ID: <20050507161046.GA9912@phenix.progiciels-bpi.ca>

[Martin von L?wis]

> Fran?ois Pinard wrote:
>
> > Am I looking in the wrong places, or else, should not the standard
> > documentation more handily explain such things?

> It should, but, alas, it doesn't. Contributions are welcome.

My contributions are not that welcome.  If they were, the core team
would not try forcing me into using robots and bug trackers! :-)

> The algorithm to set sys.std{in,out}.encoding is in
> sysmodule.c:_PySys_Init and pythonrun.c:Py_InitializeEx
> and goes roughly as follows:

> - On Windows, if isatty returns true, use GetConsoleCP and
>   GetConsoleOutputCP.
> - On Unix, if isatty returns true, langinfo.h is present,
>   CODESET is defined, and nl_langinfo(CODESET) returns a
>   non-empty string, use that.
> - otherwise, .encoding will not be set.

Thanks.  Your kind explanation, above, should make it, as is, somewhere
in the documentation -- until Xah decides to rewrite it, of course! :-).

-- 
Fran?ois Pinard   http://pinard.progiciels-bpi.ca


From rogerb at rogerbinns.com  Tue May 10 02:45:59 2005
From: rogerb at rogerbinns.com (Roger Binns)
Date: Mon, 9 May 2005 23:45:59 -0700
Subject: M2Crypto SSL memory leaks - fixes or alternatives ??
References: <1115652793.232733.310800@f14g2000cwb.googlegroups.com>
Message-ID: <a626l2-6po.ln1@home.rogerbinns.com>

> I notice that M2Crypto (a python wrap of OpenSSL) leaks (haemorrhages)
> memory significantly and affects my long running app very badly.
>
> Does anyone know of fixes to this problem?
>
> Does anyone recommmend alternatives to M2C ? e.g pyopenssl.

If you control both ends of the connection then you can do what I did and
switch to SSH.  The Python Paramiko library implements it really well.
(I ended up doing XML-RPC over SSH).

Roger 




From http  Sun May  1 22:03:20 2005
From: http (Paul Rubin)
Date: 01 May 2005 19:03:20 -0700
Subject: How to kill a SocketServer?
References: <7xwtqj1lh1.fsf@ruckus.brouhaha.com>
	<mailman.83.1114972348.14961.python-list@python.org>
	<7xpswa4wfu.fsf@ruckus.brouhaha.com>
	<17013.25972.965219.254879@montanaro.dyndns.org>
	<mailman.5.1114997245.6583.python-list@python.org>
Message-ID: <7xekcq75av.fsf@ruckus.brouhaha.com>

Skip Montanaro <skip at pobox.com> writes:
>     def serve_forever(self):
>         while self.serving:
>             r,w,e = select.select([self.socket], [], [], self.pause)
>             if r:
>                 self.handle_request()
> 
> and set self.pause to something short-ish.  The select call times out and
> the server exits.

Ah, good point.  Something like this should probably be added to
SocketServer.py (optional timeout parameter to serve_forever), or at
least the trick should be mentioned in the docs.

Thanks.


From timr at probo.com  Sat May 14 03:11:42 2005
From: timr at probo.com (Tim Roberts)
Date: Sat, 14 May 2005 00:11:42 -0700
Subject: Problems with csv module
References: <d5sngn$l4$03$1@news.t-online.com><mailman.338.1115809896.29826.python-list@python.org><d5spph$ktm$01$1@news.t-online.com>
	<a4r381p3s5uhud58tvd2m2nod1ebmo48u0@4ax.com>
	<mailman.379.1115830121.29826.python-list@python.org>
Message-ID: <c88b811ccf5d48j28mlhphtnk7v6onkdq2@4ax.com>

"Fredrik Lundh" <fredrik at pythonware.com> wrote:
>
>does the CSV format even support Unicode-encoded data streams?

Since there is no RFC or ISO standard for CSV, I'd say the answer was
"yes".

I just tried it with Excel, which is probably as close as we can get to the
canonical csv application.  It can read a UCS-16 csv file, but it
mishandles it.  It doesn't split at the commas.  It treats each line as a
single cell.
-- 
- Tim Roberts, timr at probo.com
  Providenza & Boekelheide, Inc.


From prabapython at yahoo.co.in  Mon May 16 08:45:13 2005
From: prabapython at yahoo.co.in (praba kar)
Date: Mon, 16 May 2005 13:45:13 +0100 (BST)
Subject: Reg Date string conversion into timestamp function
Message-ID: <20050516124514.17075.qmail@web8402.mail.in.yahoo.com>


Dear All,

     I have doubt regarding date string to time
conversion function.  In Python I cannot find flexible
date string conversion function like php strtotime. I
try to use following type
function
1) parsedate function failed if a date string
like below format "16-MAY-2005 01:26"
2)parsedate_tz function also failed if a date string
is different format

if any one find some other date string conversion
function kindly let me know


________________________________________________________________________
Yahoo! India Matrimony: Find your life partner online
Go to: http://yahoo.shaadi.com/india-matrimony


From arserlom at gmail.com  Sat May 14 08:02:03 2005
From: arserlom at gmail.com (arserlom at gmail.com)
Date: 14 May 2005 05:02:03 -0700
Subject: Modifying CallTips.py to work with with new-style classes in IDLE.
Message-ID: <1116071397.262755.38550@f14g2000cwb.googlegroups.com>

When using Idle, Call Tips are floating windows which display function,
class, and method parameter and docstring information when you type an
opening parenthesis, and which disappear when you type a closing
parenthesis.

But when you use new-style classes, they don't work fine and don't show
the arguments of the __init__ method.

There is a topic in this newsgroup (new style classes and an IDLE
"grump"), where a solution was given to the problem (in Mar 27 2002):

> The solution seems to be simply changing line 115 in CallTips.py (in
the
> Tools/Idle/ directory) as folows:
>
>     if type(ob)==types.ClassType:
>
>   to
>
>     if type(ob)==types.ClassType or type(ob) == types.TypeType:

I've tried it (Python 2.4.1 - IDLE 1.1.1) and it works fine (CallTips
was in the \Lib\idlelib directory for me).

Why isn't this the default behaviour? Is this the right place to post
this?



From fredrik at pythonware.com  Sun May  1 11:43:27 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Sun, 1 May 2005 17:43:27 +0200
Subject: tkMessageBox dialog help
References: <1179elj56ralk70@news.supernews.com>
	<1114949390.876896.322200@o13g2000cwo.googlegroups.com>
Message-ID: <d5b45r$ee8$1@sea.gmane.org>

Harlin Seritt wrote:

> >From what I've seen I'm afraid this is the way it is. If you call an
> instance of tkMessageBox and you don't have a 'master' Tk instance
> running, it will create its own.
>
> Still, I'm sure with a bit of voodoo you can hide the self created tk
> window while showing the message box.

no voodoo needed: just create the root window yourself (root = Tk()), and
call the withdraw method on it before you do anything else.

</F>





From phillip.watts at anvilcom.com  Wed May 18 21:27:29 2005
From: phillip.watts at anvilcom.com (phil)
Date: Wed, 18 May 2005 20:27:29 -0500
Subject: Tkinter Return/Enter key handling
References: <M6CdnS9Wpto3TRbfRVn-3g@nmt.edu>
Message-ID: <428BEB81.2010107@anvilcom.com>

If you are talking Linux there's .Xdefaults
Which I had to resort to for tn5250.
For Tkinter apps its a LOT easier to just use bind.

Win32? dunno.


Bob Greschke wrote:

> I have a Tkinter Text() widget in a program that the user can type stuff 
> into.  Most of our keyboards have the regular keys with a "Return" key, and 
> a numeric keypad with an "Enter" key.  The Return key generates events with 
> "<Return>" for the keysym, and the Enter key generates events with 
> "<KP_Enter>" as the keysym.  The Text() widget does a carriage 
> return/linefeed when the Return key is pressed, but does nothing when the 
> Enter key is pressed.  So I did a
> 
> Text.bind("<KP_Enter", Return)
> 
> with a suitable
> 
> def Return(e):
>     TheText.insert(END, linesep)
> 
> But isn't there a way to handle this with some sort of keyboard remapping 
> thingy??  I'm right on the edge of understanding half of what I read about 
> Tkinter. :)
> 
> Thanks!
> 
> Bob
> 
> 
> 





From jrastrick at student.usyd.edu.au  Wed May 18 13:21:40 2005
From: jrastrick at student.usyd.edu.au (Jordan Rastrick)
Date: 18 May 2005 10:21:40 -0700
Subject: "End Of Line" Confusion
In-Reply-To: <1116399590.659940.204770@g14g2000cwa.googlegroups.com>
References: <1116370499.324399.8920@z14g2000cwz.googlegroups.com>
	<1116396681.298692.289380@g43g2000cwa.googlegroups.com>
	<1116399590.659940.204770@g14g2000cwa.googlegroups.com>
Message-ID: <1116436900.136691.312880@g47g2000cwa.googlegroups.com>

If you email the script to me, I'd be happy to take a look at it and
see if I come up with the same error (I'm running IDLE on a Windows XP
box here, cant remember if the filesystem is FAT or NTFS ;-))

Although as a relative newbie I've never come across it myself, one
possible source of such mysterious errors in Python, apparently, is
mixing tabs and spaces in your indentation. Its also one of the few
factors I can think of that would have been lost in the
email-copy-paste process, which could explain why the code snippet
works on my machine and not yours.

My only other suggestion is to try my personal first rule for fixing
mysterious, unusual bugs in small, trivial pieces of code - which is to
delete the whole thing and type it out again from scratch. It works
surprisingly often.

Good luck
- Jordan



From danb_83 at yahoo.com  Sun May 29 12:22:48 2005
From: danb_83 at yahoo.com (Dan Bishop)
Date: 29 May 2005 09:22:48 -0700
Subject: how to convert string to list or tuple
References: <d74dbl$h91$1@news.yaako.com>
	<mailman.131.1117109560.18027.python-list@python.org>
Message-ID: <1117383768.099922.308760@o13g2000cwo.googlegroups.com>

Simon Brunning wrote:
> On 5/26/05, flyaflya <flyaflya at gmail.com> wrote:
> > a = "(1,2,3)"
> > I want convert a to tuple:(1,2,3),but tuple(a) return ('(', '1', ',',
> > '2', ',', '3', ')') not (1,2,3)
>
> Short answer - use eval().
>
> Long answer - *don't* use eval unless you are in control of the source
> of the string that you are evaluating.

Or if you do use eval, don't give it access to any names.

>>> import os
>>> eval(raw_input(), {})
os.system("rm -rf *")
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File "<string>", line 0, in ?
NameError: name 'os' is not defined



From skip at pobox.com  Tue May 17 16:06:17 2005
From: skip at pobox.com (Skip Montanaro)
Date: Tue, 17 May 2005 15:06:17 -0500
Subject: Python forum
In-Reply-To: <87k6lxk51a.fsf@pobox.com>
References: <mailman.84.1116320178.8733.python-list@python.org>
	<87k6lxk51a.fsf@pobox.com>
Message-ID: <17034.20153.201703.465946@montanaro.dyndns.org>


    John> Web forums do reach a different audience.  Maybe python.org should
    John> have a 'web forum' link to gmane.org's web interface for c.l.py?

Any idea if the gmane folks could be convinced to move
gmane.comp.python.general to gmane.comp.lang.python so it's with the rest of
the programming languages?

Skip


From phillip.watts at anvilcom.com  Wed May 18 18:00:10 2005
From: phillip.watts at anvilcom.com (phil)
Date: Wed, 18 May 2005 17:00:10 -0500
Subject: iso_8859_1 mystery/tkinter
References: <mailman.154.1116432329.8733.python-list@python.org>	<mailman.158.1116437716.8733.python-list@python.org>
	<d6g499$d5s$2@news4.zwoll1.ov.home.nl>
Message-ID: <428BBAEA.4070806@anvilcom.com>


> | >         s.const['DEG'] = '%c' % (0xb0)

> | > But the symbol for degrees, a little circle, produces
> | > a vertical bar in Tkinter Text box or Canvas.


> t.insert(0.0, u'%c' % 0xb0)
> 
> should do the trick though.
> 

COOL!  Thanks, though that seems a little odd.
As far as I know %c ignores the sign bit everywhere
else, including X11 and Win consoles.
But I'll just note it and do it.
Thanks again.



From evenprimes at gmail.com  Tue May 31 15:17:54 2005
From: evenprimes at gmail.com (Chris Cioffi)
Date: Tue, 31 May 2005 15:17:54 -0400
Subject: working with pointers
In-Reply-To: <d7icc5$ab0$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
References: <d7iapk$6ck$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
	<JJSdnXLcZdUsLQHfRVn-1w@comcast.com>
	<d7ibjg$8en$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
	<mailman.299.1117566077.18027.python-list@python.org>
	<d7icc5$ab0$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
Message-ID: <f03f4fdf0505311217346f53fd@mail.gmail.com>

Nope, numbers too. When you do:
 a = 4
 You are storing a reference to the literal 4 in a. 
 >>> a = 4
>>> dir(a)
['__abs__', '__add__', '__and__', '__class__', '__cmp__', '__coerce__', 
'__delattr__', '__
div__', '__divmod__', '__doc__', '__float__', '__floordiv__', 
'__getattribute__', '__getne
wargs__', '__hash__', '__hex__', '__init__', '__int__', '__invert__', 
'__long__', '__lshif
t__', '__mod__', '__mul__', '__neg__', '__new__', '__nonzero__', '__oct__', 
'__or__', '__p
os__', '__pow__', '__radd__', '__rand__', '__rdiv__', '__rdivmod__', 
'__reduce__', '__redu
ce_ex__', '__repr__', '__rfloordiv__', '__rlshift__', '__rmod__', 
'__rmul__', '__ror__', '
__rpow__', '__rrshift__', '__rshift__', '__rsub__', '__rtruediv__', 
'__rxor__', '__setattr
__', '__str__', '__sub__', '__truediv__', '__xor__']
>>>
 Unlike a list, there is no way to alter the interger value of 4.
 If we go further, and then do something like:
>>> b = a
>>> b
4
>>>
 Both a and b refer to the same object, in this case the 4 object.
 If you want a copy of the object check out the copy module.
 Chris
 On 31/05/05, Michael <slick_mick_00 at hotmail.com> wrote: 
> 
> except numbers??
> 
> "Dave Brueck" <dave at pythonapocrypha.com> wrote in message
> news:mailman.299.1117566077.18027.python-list at python.org...
> > Michael wrote:
> > > sorry, I'm used to working in c++ :-p
> > >
> > > if i do
> > > a=2
> > > b=a
> > > b=0
> > > then a is still 2!?
> > >
> > > so when do = mean a reference to the same object
> >
> > Always.
> >
> > > and when does it mean make a copy of the object??
> >
> > Never.
> >
> > -Dave
> 
> 
> --
> http://mail.python.org/mailman/listinfo/python-list
> 



-- 
"I was born not knowing and have had only a little time to change that here 
and there." -- Richard Feynman
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From lsumnler at uniqueinsuranceco.com  Mon May 30 08:17:09 2005
From: lsumnler at uniqueinsuranceco.com (LenS)
Date: 30 May 2005 05:17:09 -0700
Subject: Newbie learning OOP
In-Reply-To: <429a2379@news.eftel.com>
References: <1117374143.284962.3080@z14g2000cwz.googlegroups.com>
	<429a2379@news.eftel.com>
Message-ID: <1117455429.752703.253800@g49g2000cwa.googlegroups.com>

You are correct, the code so far is just a simple problem to learn OOP.
 Oh by the way I don't work for Dept. of Homeland Security just
remember "drop those fingernail clipers and step away from those
shoes:-)



From hancock at anansispaceworks.com  Mon May 23 00:24:55 2005
From: hancock at anansispaceworks.com (Terry Hancock)
Date: Sun, 22 May 2005 23:24:55 -0500
Subject: Running a python program during idle time only
In-Reply-To: <1116637560.499307.28700@o13g2000cwo.googlegroups.com>
References: <1116637560.499307.28700@o13g2000cwo.googlegroups.com>
Message-ID: <200505222324.55103.hancock@anansispaceworks.com>

On Friday 20 May 2005 08:06 pm, los wrote:
> I'm wondering if anyone knows of a way that I could make so that the
> program will run at full speed only runs after the computer has been
> idle for a while.  I've looked at the "nice" command but that's not
> exactly what I want.

You need to define what "idle" means:  Screensavers do this in more
than one way, but typically, "idle" means "no user input has occured",
in which case you are looking for the time since the last input signal
from keyboard or mouse (not sure how to do this off the top of my
head, but that's the "screensaver" approach).

This is much less meaningful on a multiuser / multiple terminal
machine, of course.  And it's really nonsense on a machine that is
also acting as a server. That's why "nice" seems like a more logical
solution for these types of machines.

Someone's already mentioned checking the load average, which 
sounds like a good idea for your application.


--
Terry Hancock ( hancock at anansispaceworks.com )
Anansi Spaceworks  http://www.anansispaceworks.com



From kbk at shore.net  Tue May 10 23:43:45 2005
From: kbk at shore.net (Kurt B. Kaiser)
Date: Tue, 10 May 2005 23:43:45 -0400 (EDT)
Subject: Weekly Python Patch/Bug Summary
Message-ID: <200505110343.j4B3hjB1003013@bayview.thirdcreek.com>

Patch / Bug Summary
___________________

Patches :  332 open (+10) /  2834 closed ( +2) /  3166 total (+12)
Bugs    :  927 open ( +7) /  4959 closed ( +7) /  5886 total (+14)
RFE     :  186 open ( +0) /   157 closed ( +1) /   343 total ( +1)

New / Reopened Patches
______________________

Feature enhancement for C socket module  (2005-05-03)
       http://python.org/sf/1194378  opened by  Heiko Wundram

pydoc requires o.__nonzero__() = True  (2005-05-03)
       http://python.org/sf/1194449  opened by  Jay T Miller

[AST] throw SyntaxError in "from x import y,"  (2005-05-03)
       http://python.org/sf/1194895  opened by  logistix

simple callback system for Py_FatalError   (2005-05-05)
       http://python.org/sf/1195571  opened by  m utku

in IDLE, assume new text files are python source by default  (2005-05-06)
       http://python.org/sf/1196895  opened by  Jeff Shute

smarter behaviour for home key in IDLE  (2005-05-06)
       http://python.org/sf/1196903  opened by  Jeff Shute

change recall in IDLE shell to not overwrite current command  (2005-05-06)
       http://python.org/sf/1196917  opened by  Jeff Shute

allow using normal indent width in shell in IDLE  (2005-05-06)
       http://python.org/sf/1196946  opened by  Jeff Shute

_ssl.mak Makefile patch (Win32)  (2005-05-07)
       http://python.org/sf/1197150  opened by  Joachim Kessel

Add proxies arg to urllib.urlretrieve  (2005-05-07)
       http://python.org/sf/1197207  opened by  John Dubery

test_locale fix on modern linux  (2005-05-07)
       http://python.org/sf/1197218  opened by  Anthony Baxter

Cygwin case-sensitive import patch  (2005-05-07)
       http://python.org/sf/1197318  opened by  Jason Tishler

Patches Closed
______________

Minimal cleanup of run.py  (2005-04-26)
       http://python.org/sf/1190163  closed by  kbk

Decimal interaction with __rop__  (2005-03-19)
       http://python.org/sf/1166602  closed by  facundobatista

New / Reopened Bugs
___________________

parsedate and Y2K  (2005-05-02)
       http://python.org/sf/1194222  opened by  Mark Nottingham

Minor bug in urllib docs  (2005-05-03)
       http://python.org/sf/1194249  opened by  Georg Brandl

Reading from a killed shell script with popen* under linux  (2005-05-03)
       http://python.org/sf/1194328  opened by  Vinz

ImportError: No module named os  (2005-05-03)
CLOSED http://python.org/sf/1194497  opened by  Will L G

[AST] Patch [ 1190012 ] should've checked for SyntaxWarnings  (2005-05-04)
       http://python.org/sf/1195576  opened by  logistix

SystemError: error return without exception set  (2005-05-05)
       http://python.org/sf/1195984  opened by  Niraj Bajpai

Error: ... ossaudiodev.c, line 48: Missing type specifier  (2005-05-05)
       http://python.org/sf/1196154  opened by  Will L G

WeakValueDictionary.__init__ is backwards  (2005-05-05)
       http://python.org/sf/1196315  opened by  Pavel Pergamenshchik

string.rstrip strips more than supposed to in some cases  (2005-05-06)
CLOSED http://python.org/sf/1196824  opened by  Francois Payette

trivial bug in error message text  (2005-05-06)
       http://python.org/sf/1196980  opened by  Jeff Shute

% gives wrong results  (2005-05-08)
CLOSED http://python.org/sf/1197806  opened by  Jonathan

Installation path sent to configure  (2005-05-09)
       http://python.org/sf/1197883  opened by  Bj?rn Lindqvist

time module ignores timezone changes  (2005-05-09)
CLOSED http://python.org/sf/1198275  opened by  David Lambert

string.Template not flexible enough to subclass (regexes)  (2005-05-09)
       http://python.org/sf/1198569  opened by  Ian Bicking

subprocess _active.remove(self) self not in list _active  (2005-05-10)
       http://python.org/sf/1199282  opened by  cheops

Bugs Closed
___________

SimpleHTTPServer sends wrong c-length and locks up client  (2005-04-26)
       http://python.org/sf/1190580  closed by  alexanderweb

ImportError: No module named os  (2005-05-03)
       http://python.org/sf/1194497  closed by  rhettinger

Error in section 4.2 of Python Tutorial  (2005-05-02)
       http://python.org/sf/1194209  closed by  rhettinger

Error in section 4.2 of Python Tutorial  (2005-05-02)
       http://python.org/sf/1194209  closed by  rhettinger

string.rstrip strips more than supposed to in some cases  (2005-05-06)
       http://python.org/sf/1196824  closed by  goodger

% gives wrong results  (2005-05-08)
       http://python.org/sf/1197806  closed by  mwh

time module ignores timezone changes  (2005-05-09)
       http://python.org/sf/1198275  closed by  bcannon

calendar.weekheader not found in __all__  (2005-05-02)
       http://python.org/sf/1193890  closed by  rhettinger

RFE Closed
__________

logging module root logger name  (2005-04-27)
       http://python.org/sf/1190689  closed by  vsajip



From andreas.lobinger at netsurf.de  Fri May 27 04:59:26 2005
From: andreas.lobinger at netsurf.de (Andreas Lobinger)
Date: Fri, 27 May 2005 10:59:26 +0200
Subject: Writing a bytecode interpreter (for TeX dvi files)
In-Reply-To: <4295776D.2070601@pytex.org>
References: <4295776D.2070601@pytex.org>
Message-ID: <d76nhf$shq$1@news.mch.sbs.de>

Aloha,

Jonathan Fine wrote:
> I'm writing some routines for handling dvi files.
> In case you didn't know, these are TeX's typeset output.
> These are binary files containing opcodes.
> I wish to write one or more dvi opcode interpreters.
> Are there any tools or good examples to follow for
> writing a bytecode interpreter?

As far as i know, dvi is a very straight forward format, commands
followed by parameters, no conditionals, no loops.
For similar designs i used something like the following approach:

s = file('a.dvi','r').read() # read complete file to string

while s:
	command = ord(s[0])

         if command < 128:
            #typeset command
            s = s[1:]
         elif command = 139:
            #bop command
            param = s[:40]
            #interpret param
	   c = struct.unpack('D',param[:3])
            #consume s
            s = s[41:]
         else:
            #undefined command
            s = s[1:]

You can work directly on strings, or convert to a list. If you don't
want long if/elif lists, you can use a dict as a dispatcher (python
cookbook has an example?). For most of the commands you can use
a lookup table for the parameter list length.
TeX ?591 claims, that dvi is stricly interpretable from front to end.
The description in Tex?585++ can be transcripted to struct definitions
easily.

Wishing a happy day
		LOBI



From andre.roberge at gmail.com  Tue May 31 21:09:02 2005
From: andre.roberge at gmail.com (=?ISO-8859-1?Q?Andr=E9_Roberge?=)
Date: Tue, 31 May 2005 22:09:02 -0300
Subject: ANN: Version 0.9 of RUR-PLE
Message-ID: <d7j1m3$gem$2@sea.gmane.org>

Version 0.9 of RUR: a Python Learning Environment has been released.
Information about RUR-PLE can be obtained at
http://rur-ple.sourceforge.net

Note that the project website is slightly out of date.

Among the changes in this new version:

***Spanish translation added.*

Changed image for language selection to reflect addition.

Changed directory structure of lessons.

Fixed "non-existent file" problem when changing language
with unstranslated lesson file open in browser; the
browser will open the default file in the chosen language
instead.

Changed dialogs (beepers to robot and resize world)
to use GridBagSizer for layout as opposed to specific
coordinates.

Added parameter  wx.BUFFER_VIRTUAL_AREA in
dc = wx.BufferedPaintDC(self, self.buffer, wx.BUFFER_VIRTUAL_AREA)
in world_display.py; this is required to get proper scrolling
since wxPython 2.5.4.1.

Added SetFocus() when positioning sizer on "Robot: code and learn"
page.  This gets rid of the unwanted grey background.

Changed list of beepers that can be placed at an intersection from
0 ... 15, 16, 17, 18, 19, 20  to
0 ... 15, 20, 40, 60, 80, 99.

Removed the "from __future__ import division" command to the interpreter.
Since this is not likely to be the default version for a *long* time, it 
seems
a better idea to revert to the default behaviour for the interpreter.
TODO: The lesson needs to be updated to reflect this change.

World redrawn immediately after selecting a new language, so that
the words "streets" and "avenues" are updated right away.

Corrected tooltip language setting on speed selection slider.

Added possibility to change background colour of robot world
through user program.  This is to be used in the random maze escape lesson.

Changed the 20 robot images so that their background
is transparent.

Removed obsolete self-testing code in various files as well as
redundant import statements.

Fixed problem with seemingly random
"invalid world file" error.  This occured when
a robot was removed from the world, and an
attempt was made at resetting the world.

Added SetFocus() to WorldGui.OnLeftDown().  Somehow,
the WorldGUI (i.e. robot world) would no longer get focus
as a matter of course when left-clicked.  This meant that it
was no longer possible to position the robot using the cursor keys.
This problem has appeared since I made the switch to
wxPython 2.6.



From dalke at dalkescientific.com  Sun May  1 04:06:39 2005
From: dalke at dalkescientific.com (Andrew Dalke)
Date: Sun, 01 May 2005 08:06:39 GMT
Subject: How to kill a SocketServer?
References: <7xwtqj1lh1.fsf@ruckus.brouhaha.com>
Message-ID: <pan.2005.05.01.08.06.34.989917@dalkescientific.com>

Paul Rubin wrote:
> Let's say you have a SocketServer with the threading mix-in and you
> run serve_forever on it.  How can you shut it down, or rather, how can
> it even shut itself down? 

I looked at CherryPy's server because I know it uses Python's
BaseHTTPServer which is derived from SocketServer, and I know
it's multithreaded.

Turns out I don't know enough about it to make a reasonable
summary, unless I do a lot more research.  Here's some text
from _cphttpserver

  class PooledThreadServer(SocketServer.TCPServer):

    allow_reuse_address = 1

    """A TCP Server using a pool of worker threads. This is superior to the
       alternatives provided by the Python standard library, which only offer
       (1) handling a single request at a time, (2) handling each request in
       a separate thread (via ThreadingMixIn), or (3) handling each request in
       a separate process (via ForkingMixIn). It's also superior in some ways
       to the pure async approach used by Twisted because it allows a more
       straightforward and simple programming model in the face of blocking
       requests (i.e. you don't have to bother with Deferreds).""" 

which means it went a different route.  Looks like a
request comes in and is put to a work queue.  Clients get
from it.  There's a special work queue item to tell
the threads to stop.

				Andrew
				dalke at dalkescientific.com



From exarkun at divmod.com  Fri May 13 09:52:07 2005
From: exarkun at divmod.com (Jp Calderone)
Date: Fri, 13 May 2005 13:52:07 GMT
Subject: doc tags?
In-Reply-To: <d62ahh$iif$1@sea.gmane.org>
Message-ID: <20050513135207.15422.800969735.divmod.quotient.36650@ohm>

On Fri, 13 May 2005 06:44:46 -0700, Robert Kern <rkern at ucsd.edu> wrote:
>Larry Bates wrote:
>> In python they are called decorators, but I've never had a
>> need to use them myself, but then I'm a little old fashioned.
>
>Decorators only work on function and method definitions. I don't think
>that's what Wolfram is referring to.

  Decorator syntax may only work there.  Decorators are a more general concept orthogonal to the '@' syntax, which can be applied to any kind of object.

  Jp


From tzot at sil-tec.gr  Thu May 26 17:35:42 2005
From: tzot at sil-tec.gr (Christos TZOTZIOY Georgiou)
Date: Fri, 27 May 2005 00:35:42 +0300
Subject: Encryption with Python?
References: <1115324411.952821.150780@o13g2000cwo.googlegroups.com><001301c552db$dd19d3e0$0201a8c0@mcuf7><d5i0as$ejd$1@sea.gmane.org><mailman.134.1115466844.29826.python-list@python.org>
	<6vh881d59bbecnc45fojknt0rohgt27crl@4ax.com>
	<mailman.44.1116922739.18027.python-list@python.org>
Message-ID: <t9fc91hgqlbog568vt2qv0vgcuv4ofbhcl@4ax.com>

On Tue, 24 May 2005 10:16:15 +0200, rumours say that "Anthra Norell"
<anthra.norell at tiscalinet.ch> might have written:

>Why whack someone over the head who tries to develop an idea of his own.
>Such an approach isn't uncommon to earn extra credit in educational
>settings.

I would never whack someone over the head (WSOTH) who tries to develop
an idea of his own, and never will (intentionally at least --I myself
like reinventing the wheel once in a while just to make sure my synapses
still work).  However I do WSOTH for 

>>I rolled my own for relatively short sequences, like passwords. The key is
>>an integer. To decrypt use the negative encryption key. I consider the
>>encryption unbreakable, as it is indistinguishable from a random sequence.

So, to be clear, my reason was your declaring that "I consider the
encryption unbreakable, as it...", and that is why I actually challenged
you to either support the unbreakability of your algorithm by supplying
sensitive data for you, or back off and simply say "ok guys, my words
were a *little* over the top".

That's all.  I see you took up the challenge and indirectly replied to
my last question, and in good spirit I say you earned a little respect
from me, at least for standing up to your words.  Now I hope no-one
gives a try to your data (for your own sake :)
-- 
TZOTZIOY, I speak England very best.
"Be strict when sending and tolerant when receiving." (from RFC1958)
I really should keep that in mind when talking with people, actually...


From philippe at philippecmartin.com  Sun May 29 10:10:16 2005
From: philippe at philippecmartin.com (Philippe C. Martin)
Date: Sun, 29 May 2005 14:10:16 GMT
Subject: Trying to understand pickle.loads withou class declaration
References: <3L2me.3465$3D6.2238@newssvr12.news.prodigy.com>
	<ja3me.3481$4N2.2982@newssvr30.news.prodigy.com>
	<1117368665.235350.54450@g14g2000cwa.googlegroups.com>
Message-ID: <c3kme.25$Ag1.22@newssvr12.news.prodigy.com>

Thanks,

Philippe


S?bastien Boisg?rault wrote:

> Even
> 
>     class A:
>         pass
> 
> should do the trick. Only the instance attributes are saved by a
> pickle,
> not the methods or the class itself. The unpickler tries to merge the
> saved data and the class/method info that is not saved to recreate
> the fully functional instance... but of course this info should still
> be available. The unpickler will even import the class from the
> appropriate module if necessary.
> 
> If you want your unpickler to manufacture a class for you when
> it is not available, you may use the gnosis xml pickler with the
> appropriate security ("paranoia") level.
> 
> http://gnosis.cx/download/gnosis/xml/pickle/
> 
> Cheers,
> 
> Seb



From shanna_perkins_02 at hotmail.com  Sun May 29 22:55:32 2005
From: shanna_perkins_02 at hotmail.com (lostinpython)
Date: 29 May 2005 19:55:32 -0700
Subject: prime number
Message-ID: <1117421732.677244.237730@g49g2000cwa.googlegroups.com>

I'm having trouble writing a program that figures out a prime number.
Does anyone have an idea on how to write it?  All I know is that n > 2
is prim if no number between 2 and sqrt of n (inclusivly) evenly
divides n.



From percivall at gmail.com  Mon May 23 16:43:05 2005
From: percivall at gmail.com (Simon Percivall)
Date: 23 May 2005 13:43:05 -0700
Subject: overhead of starting threads
In-Reply-To: <4291b2f5$0$24496$da0feed9@news.zen.co.uk>
References: <4291b2f5$0$24496$da0feed9@news.zen.co.uk>
Message-ID: <1116880985.778686.72440@g44g2000cwa.googlegroups.com>

How much you gain by starting threads is also determined by what you're
doing in those threads. Remember (or learn): In CPython only one thread
at a time can execute python code, so depending on your task threading
might gain you little. If you're doing I/O or calling functions written
in C (and if they release the Global Intepreter Lock [GIL]) you might
gain a lot by using threads.

As for overhead: profile, profile, profile. You'll have to do sample
runs and find your sweet-spot. It all depends on what you're doing in
the threads.



From gralex1974 at ua.fm  Mon May 23 01:53:55 2005
From: gralex1974 at ua.fm (gralex)
Date: Mon, 23 May 2005 08:53:55 +0300
Subject: GridCellEditor
References: <d6pcha$2jll$1@pandora.alkar.net>
	<ggp2919m25dv8p1jbqn3h55u8sgop2ol3d@4ax.com>
Message-ID: <d6rr8s$3e0$1@pandora.alkar.net>


>
>>Hi,all!
>>
>>How i can manually start CellEditor in wxGrid for spicified Cell in grid 
>>in
>>my programm:
>>
>>mygrid.SetGridCursor(2,3)
>>mygrid.MakeCellVisible(2,3)
>>#.... starting editing....... ??????????????
>>mygrid.ShowCellEditControl() don't working...
>>
>>help me, please...
>>
> Try:
> mygrid..EnableCellEditControl(True)

Thanks you.
It's working... 




From anandr86 at gmail.com  Tue May  3 13:42:43 2005
From: anandr86 at gmail.com (anandr86 at gmail.com)
Date: 3 May 2005 10:42:43 -0700
Subject: trouble with lists
Message-ID: <1115142163.472256.205930@o13g2000cwo.googlegroups.com>

I'm new to python. I tried doing this

>>> x = [[]] * 3
>>> print x
[ [] [] [] ]
>>> x[0].append( 2 )
[ [2] [2] [2] ]

I confused with the last line output. I actually expected something
like

[ [2] [] [] ]

Can anyone give me an explanation. help!!



From mcdesigns at walla.com  Mon May 23 12:28:15 2005
From: mcdesigns at walla.com (Marcus Lowland)
Date: 23 May 2005 09:28:15 -0700
Subject: Memory errors with large zip files
In-Reply-To: <iost81dbd8ut8q0dn767inqj3esj3gghda@4ax.com>
References: <1116609022.526500.317990@g44g2000cwa.googlegroups.com>
	<1116637462.076589.287880@g47g2000cwa.googlegroups.com>
	<iost81dbd8ut8q0dn767inqj3esj3gghda@4ax.com>
Message-ID: <1116865695.363808.104620@g47g2000cwa.googlegroups.com>

Thank for the detailed reply John! I guess it turned out to be a bit
tougher than I originally thought :-)....

Reading over your links, I think I better not attempt rewriting the
zipfile.py program... a little over my head :-). The best solution,
from everything I read seems to be calling an unzipper program from a
subprocess. I assume you mean using execfile()? I can't think of
another way.

Anyway, thank you very much for your help, it's been very educational.

Best regards,
Lorn



From martin.witte at gmail.com  Sat May  7 12:10:43 2005
From: martin.witte at gmail.com (wittempj@hotmail.com)
Date: 7 May 2005 09:10:43 -0700
Subject: Shell Commands in Python Code
In-Reply-To: <mailman.144.1115481338.29826.python-list@python.org>
References: <mailman.144.1115481338.29826.python-list@python.org>
Message-ID: <1115482243.284015.212550@z14g2000cwz.googlegroups.com>

start to take a look at the call function of the subprocess module -
see http://docs.python.org/lib/node231.html



From ville at spammers.com  Wed May 11 09:44:28 2005
From: ville at spammers.com (Ville Vainio)
Date: 11 May 2005 16:44:28 +0300
Subject: Interactive shell for demonstration purposes
References: <1115814028.259365.98710@g49g2000cwa.googlegroups.com>
	<mailman.347.1115815769.29826.python-list@python.org>
Message-ID: <du78y2l5137.fsf@lehtori.cc.tut.fi>

>>>>> "Brian" == Brian Quinlan <brian at sweetapp.com> writes:

    Brian> Can anyone recommend a Python interactive shell for use in
    Brian> presentations?

    Brian> I've tried ipython but, since it runs inside a console
    Brian> window, and the console window has a limited number of
    Brian> selectable fonts, it doesn't work terribly well.

Hmm, do you consider the fonts in a console window unreadable? I've
given a few presentations using ipython on win32 and it worked alright
- but I suppose the projector quality is a factor here...

-- 
Ville Vainio   http://tinyurl.com/2prnb


From cam.ac.uk at mh391.invalid  Mon May  2 19:33:06 2005
From: cam.ac.uk at mh391.invalid (Michael Hoffman)
Date: Tue, 03 May 2005 00:33:06 +0100
Subject: python and os.system() failure
In-Reply-To: <1115075139.022119.321880@l41g2000cwc.googlegroups.com>
References: <mailman.48.1114820047.14961.python-list@python.org>
	<d53q3v$big$1@gemini.csx.cam.ac.uk>
	<1115075139.022119.321880@l41g2000cwc.googlegroups.com>
Message-ID: <d56dbo$12d$1@gemini.csx.cam.ac.uk>

Anthony wrote:

> I only have a tempfile object:
> 
> tmp = tempfile.mkstemp(dir="/var/tmp/")

Why aren't you using NamedTemporaryFile instead? Using mkstemp adds a 
lot of complications that are usually unnecessary.

> I will try to explicitly call a close() or whatever the syntax is to
> finalize the object to deletion by garbage collection.

Files created with mkstemp are neither closed nor deleted when they are 
finalized. I don't see how GC comes into it either.
-- 
Michael Hoffman


From news at NOwillmcguganSPAM.com  Tue May 17 11:35:55 2005
From: news at NOwillmcguganSPAM.com (Will McGugan)
Date: Tue, 17 May 2005 16:35:55 +0100
Subject: Reading image dimensions with PIL
Message-ID: <428a0f5c$0$13769$db0fefd9@news.zen.co.uk>

Hi,

I'm writing an app that downloads images. It rejects images that are 
under a certain size - whithout downloading them completely. I've 
implemented this using PIL, by downloading the first K and trying to 
create a PIL image with it. PIL raises an exception because the file is 
incomplete, but the image object is initialised with the image 
dimensions, which is what I need. It actualy works well enough, but I'm 
concerened about side-effects - since it seems an unconventional way of 
working with PIL. Can anyone see any problems with doing this? Or a 
better method?


Thanks,

Will McGugan


-- 
http://www.willmcgugan.com
"".join( [ {'*':'@','^':'.'}.get(c,None) or chr(97+(ord(c)-84)%26) for c 
in "jvyy*jvyyzpthtna^pbz" ] )


From Scott.Daniels at Acm.Org  Wed May 25 10:10:00 2005
From: Scott.Daniels at Acm.Org (Scott David Daniels)
Date: Wed, 25 May 2005 07:10:00 -0700
Subject: python24.zip
In-Reply-To: <x71x7wgxsn.fsf@handshake.de>
References: <mailman.249.1116595092.8733.python-list@python.org>
	<428e0cc3$0$29954$9b622d9e@news.freenet.de>
	<x7hdgw2zqi.fsf@handshake.de>
	<428faddd$0$26322$9b622d9e@news.freenet.de>
	<x7vf5bku5d.fsf@handshake.de>
	<4290dc79$0$9989$9b622d9e@news.freenet.de>
	<x71x7wgxsn.fsf@handshake.de>
Message-ID: <42948097$1@nntp0.pdx.net>

Dieter Maurer wrote:
> "Martin v. L?wis" <martin at v.loewis.de> writes on Sun, 22 May 2005 21:24:41 +0200:
>>...
>>>The application was Zope importing about 2.500 modules
>>>from 2 zip files "zope.zip" and "python24.zip".
>>>This resulted in about 12.500 opens -- about 4 times more
>>>than would be expected -- about 10.000 of them failing opens.

I'll bet this means that the 'zope.zip', 'python24.zip' would drop
you to "about 12500 - 10000 = 2500" failing opens.  That should be
an easy test: sys.path.insert(0, 'zope.zip') or whatever.
If that works and you want to drop even more, make a copy of zope.zip,
update it with python24.zip, and call the result python24.zip.

--Scott David Daniels
Scott.Daniels at Acm.Org


From anton.vredegoor at gmail.com  Tue May 17 07:33:45 2005
From: anton.vredegoor at gmail.com (Anton Vredegoor)
Date: 17 May 2005 04:33:45 -0700
Subject: Python on a public library computer
In-Reply-To: <87r7g6rbz0.fsf@pobox.com>
References: <1116069664.779281.320540@g47g2000cwa.googlegroups.com>
	<87r7g6rbz0.fsf@pobox.com>
Message-ID: <1116329625.869440.110810@z14g2000cwz.googlegroups.com>

John J. Lee wrote:

> Why not Jython?

There's no command prompt! The file menu from IE is also gone. There is
a sun Java console but it looks like this:

<quote Sun Java Console>

Java(TM) Plug-in: Version 1.4.2_06
Using JRE version 1.4.2_06 Java HotSpot(TM) Client VM
User home directory = C:\Documents and Settings\xxxxx
----------------------------------------------------
c:   clear console window
f:   finalize objects on finalization queue
g:   garbage collect
h:   display this help message
l:   dump classloader list
m:   print memory usage
o:   trigger logging
p:   reload proxy configuration
q:   hide console
r:   reload policy configuration
s:   dump system properties
t:   dump thread list
v:   dump thread stack
x:   clear classloader cache
0-5: set trace level to <n>

</quote Sun Java Console>

Thanks for replying anyway!

Anton



From mwooden at dtptypes.com  Fri May 27 08:24:36 2005
From: mwooden at dtptypes.com (Malcolm Wooden)
Date: Fri, 27 May 2005 12:24:36 +0000 (UTC)
Subject: Strings for a newbie
References: <d7726f$fdg$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
	<42970d69@news.eftel.com>
Message-ID: <d773i4$g2p$1@nwrdmz03.dmz.ncs.ea.ibs-infra.bt.com>

Sorry John but that don't do it for me. Just get errors comming back


"John Machin" <sjmachin at lexicon.net> wrote in message 
news:42970d69 at news.eftel.com...
> Malcolm Wooden wrote:
>> I'm trying to get my head around Python but seem to be failing miserably. 
>> I use RealBasic on a Mac and find it an absolute dream! But 
>> Python....UGH!
>>
>> I want to put a sentence of words into an array, eg "This is a sentence 
>> of words"
>>
>> In RB it would be simple:
>>
>> Dim s as string
>> Dim a(-1) as string
>> Dim i as integer
>>
>> s = "This is a sentence of words"
>> For i = 1 to CountFields(s," ")
>>   a.append NthField(s," ",i)
>> next
>>
>> That's it an array a() containing the words of the sentence.
>>
>> Now can I see how this is done in Python? - nope!
>>
>> UGH!
>>
>> Malcolm
>> (a disillusioned Python newbie)
>
>
> >>> s = "This is a sentence of words"
> >>> a = s.split()
> >>> a
> ['This', 'is', 'a', 'sentence', 'of', 'words']
> >>> 




From mauriceling at acm.org  Sat May  7 20:45:43 2005
From: mauriceling at acm.org (Maurice LING)
Date: Sun, 08 May 2005 10:45:43 +1000
Subject: hard memory limits
References: <d5f9jl$k6d$1@domitilla.aioe.org>	<mailman.88.1115374567.29826.python-list@python.org>	<d5gphu$hij$1@domitilla.aioe.org>
	<mailman.115.1115419109.29826.python-list@python.org>
	<d5h4eb$g5v$1@domitilla.aioe.org> <427c258b.868346285@news.oz.net>
	<lpco719k5lttbn1m9jj3shi08q5h62oe45@4ax.com>
	<d5hemh$a83$1@domitilla.aioe.org> <427cdb37.914854991@news.oz.net>
Message-ID: <d5jnfd$pj2$1@domitilla.aioe.org>

Bengt Richter wrote:

> On Sat, 07 May 2005 14:03:34 +1000, Maurice LING <mauriceling at acm.org> wrote:
> 
> 
>>John Machin wrote:
>>
>>>On Sat, 07 May 2005 02:29:48 GMT, bokr at oz.net (Bengt Richter) wrote:
>>>
>>>
>>>
>>>>On Sat, 07 May 2005 11:08:31 +1000, Maurice LING <mauriceling at acm.org> wrote:
>>>>
>>>>
>>>>>It doesn't seems to help. I'm thinking that it might be a SOAPpy 
>>>>>problem. The allocation fails when I grab a list of more than 150k 
>>>>>elements through SOAP but allocating a 1 million element list is fine in 
>>>>>python.
>>>>>
>>>>>Now I have a performance problem...
>>>>>
>>>>>Say I have 3 lists (20K elements, 1G elements, and 0 elements), call 
>>>>>them 'a', 'b', and 'c'. I want to filter all that is in 'b' but not in 
>>>>>'a' into 'c'...
>>>>>
>>>>>
>>>>>
>>>>>>>>a = range(1, 100000, 5)
>>>>>>>>b = range(0, 1000000)
>>>>>>>>c = []
>>>>>>>>for i in b:
>>>>>
>>>>>...     if i not in a: c.append(i)
>>>>>...
>>>>>
>>>>>This takes forever to complete. Is there anyway to optimize this?
>>>>>
>>>>
>>>>Checking whether something is in a list may average checking equality with
>>>>each element in half the list. Checking for membership in a set should
>>>>be much faster for any significant size set/list. I.e., just changing to
>>>>
>>>>    a = set(range(1, 100000, 5))
>>>>
>>>>should help. I assume those aren't examples of your real data ;-)
>>>>You must have a lot of memory if you are keeping 1G elements there and
>>>>copying a significant portion of them. Do you need to do this file-to-file,
>>>>keeping a in memory? Perhaps page-file thrashing is part of the time problem?
>>>
>>>
>>>Since when was 1000000 == 1G??
>>>
>>>Maurice, is this mucking about with 1M or 1G lists in the same
>>>exercise as the "vm_malloc fails when allocating a 20K-element list"
>>>problem? Again, it might be a good idea if you gave us a little bit
>>>more detail. You haven't even posted the actual *PYTHON* error message
>>>and stack trace that you got from the original problem. In fact,
>>>there's a possible interpretation that the (system?) malloc merely
>>>prints the vm_malloc message and staggers on somehow ...
>>>
>>>Regards,
>>>John
>>
>>This is the exact error message:
>>
>>*** malloc: vm_allocate(size=9203712) failed (error code=3)
>>*** malloc[489]: error: Can't allocate region
>>
>>Nothing else. No stack trace, NOTHING.
>>
> 
> 1. Can you post minimal exact code that produces the above exact error message?
> 2. Will you? ;-)
> 
> Regards,
> Bengt Richter

I've re-tried the minimal code mimicking the error in interactive mode 
and got this:

 >>> from SOAPpy import WSDL
 >>> serv = 
WSDL.Proxy('http://eutils.ncbi.nlm.nih.gov/entrez/eutils/soap/v1.1/eutils.wsdl' 
)
 >>> result = serv.run_eSearch(db='pubmed', term='mouse', retmax=500000)
*** malloc: vm_allocate(size=9121792) failed (error code=3)
*** malloc[901]: error: Can't allocate region
Traceback (most recent call last):
   File "<stdin>", line 1, in ?
   File "/sw/lib/python2.3/site-packages/SOAPpy/Client.py", line 453, in 
__call__
     return self.__r_call(*args, **kw)
   File "/sw/lib/python2.3/site-packages/SOAPpy/Client.py", line 475, in 
__r_call
     self.__hd, self.__ma)
   File "/sw/lib/python2.3/site-packages/SOAPpy/Client.py", line 347, in 
__call
     config = self.config)
   File "/sw/lib/python2.3/site-packages/SOAPpy/Client.py", line 212, in 
call
     data = r.getfile().read(message_len)
   File "/sw/lib/python2.3/socket.py", line 301, in read
     data = self._sock.recv(recv_size)
MemoryError
 >>>


When changed retmax to 150000, it works nicely.



From tim.leslie at gmail.com  Thu May 26 00:46:49 2005
From: tim.leslie at gmail.com (Tim Leslie)
Date: Thu, 26 May 2005 14:46:49 +1000
Subject: __init__() not called automatically
In-Reply-To: <1117081917.760603.82610@z14g2000cwz.googlegroups.com>
References: <1117081917.760603.82610@z14g2000cwz.googlegroups.com>
Message-ID: <d32b4535050525214625ccecb@mail.gmail.com>

On 25 May 2005 21:31:57 -0700, Sriek <scharan20 at gmail.com> wrote:
> hi,
> i come from a c++ background. i ws happy to find myself on quite
> familiar grounds with Python. But, what surprised me was the fact that
> the __init__(), which is said to be the equivlent of the constructor in
> c++, is not automatically called. I'm sure there must be ample reason
> for this. I would like to know why this is so? This is my view is more
> burden on the programmer.

>>> class C:
...     def __init__(self): print "Hello"
...
>>> c = C()
Hello

This looks like __init__ being called automatically to me. Are you
doing something different?

> Similarly, why do we have to explicitly use the 'self' keyword
> everytime?

http://www.python.org/doc/faq/general.html#why-must-self-be-used-explicitly-in-method-definitions-and-calls

> 
> Every kind of help would be welcome.

No worries,

Tim

> 
> --
> http://mail.python.org/mailman/listinfo/python-list
>


From Amitpython5 at aol.com  Mon May 23 13:56:14 2005
From: Amitpython5 at aol.com (Amitpython5 at aol.com)
Date: Mon, 23 May 2005 13:56:14 EDT
Subject: Problems installing SOAPpy.
Message-ID: <d6.27241e7b.2fc3733e@aol.com>

Hello,
 
  I'm having some problems installing SOAPpy module on my host, which  has 
python 2.1
First when it attempts it import logging, it complains that classmethod is  
not defined. When I commented out (import logging), I got a different errror,  
about missing module thread.
Specifically:
Traceback (most recent call last):
File "setup.py", line 8, in  ?
from SOAPpy.version import __version__
File  "SOAPpy/__init__.py", line 5, in ?
from  Client      import *
File "SOAPpy/Client.py",  line 57, in ?
from Parser       import parseSOAPRPC
File "SOAPpy/Parser.py", line 10, in  ?
from wstools.XMLname import fromXMLname
File  "SOAPpy/wstools/__init__.py", line 6, in ?
import  WSDLTools
File "SOAPpy/wstools/WSDLTools.py", line 16, in  ?
from XMLSchema import XMLSchema, SchemaReader,  WSDLToolsAdapter
File "SOAPpy/wstools/XMLSchema.py", line 18, in  ?
from threading import RLock
File  "/usr/local/abinitio-V2-13-1/lib/python2.1/threading.py", line 5, in  ?
import thread
ImportError: No module named  thread

Is there way I can install thread module?
Any help will be greatly appreciated.
Thanks,
Amit.
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From martin at v.loewis.de  Tue May  3 17:50:53 2005
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Tue, 03 May 2005 23:50:53 +0200
Subject: xml.parsers.expat and utf-8
In-Reply-To: <1115135968.071417.42560@z14g2000cwz.googlegroups.com>
References: <1115135968.071417.42560@z14g2000cwz.googlegroups.com>
Message-ID: <4277f23d$0$31538$9b622d9e@news.freenet.de>

dagurp at gmail.com wrote:
> I think I've tried all variations possible but I always get errors.
> Anyone know what I'm doing wrong?

You are passing Unicode strings to Parse. Try byte strings instead.

Regards,
Martin


From jstroud at mbi.ucla.edu  Wed May 25 16:04:39 2005
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Wed, 25 May 2005 13:04:39 -0700
Subject: Tkinter Text Question
In-Reply-To: <d718o7$hsd$1@sea.gmane.org>
References: <200505241547.49091.jstroud@mbi.ucla.edu>
	<d718o7$hsd$1@sea.gmane.org>
Message-ID: <200505251304.39555.jstroud@mbi.ucla.edu>

Thank you Fredrik, this worked beautifully. I had no idea about the "@" 
prefix. Incidentally, I had to change the code to 

w.index("@%s,%s" % (e.x, e.y))

Maybe the x,y is a python 2.4 thing. I'm still stuck in 2.3.

James

On Wednesday 25 May 2005 12:18 am, Fredrik Lundh wrote:
> w.index("@x,y" % (event.x, event.y))

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From qwweeeit at yahoo.it  Tue May 10 11:05:18 2005
From: qwweeeit at yahoo.it (qwweeeit at yahoo.it)
Date: 10 May 2005 08:05:18 -0700
Subject: Strip white spaces from source
In-Reply-To: <mailman.259.1115714443.29826.python-list@python.org>
References: <1115590492.587606.108810@z14g2000cwz.googlegroups.com>
	<mailman.195.1115635650.29826.python-list@python.org>
	<1115664921.611530.85510@f14g2000cwb.googlegroups.com>
	<mailman.259.1115714443.29826.python-list@python.org>
Message-ID: <1115737518.888653.265640@o13g2000cwo.googlegroups.com>

Hi Richie,
I did not post my solution because I did not want to "pollute" the
pythonic way of programming.
Young programmers, don't follow me!
I hate (because I am not able to use them...) classes and regular
expressions.
Instead I like lists, try/except (to limit or better eliminate
debugging) and os.system + shell programming (I use Linux).
The problem of stripping white spaces from python source lines could be
easily (not for me...) solved by RE.

Instead I choosed the hard way:
Imagine you have a lot of strings representing python source lines (in
my case I have almost 30000 lines).
Let's call a generic line "sLine" (with or without the white spaces
representing indentation).
To strip the un-necessary spaces you need to identify the operands.

Thanks to the advice of Alex Martelli, there is a parsing method based
on tokenize module, to achieve this:

import tokenize, cStringIO
try:
.   for x in
tokenize.generate_tokens(cStringIO.StringIO(sLine).readline):
.   .   if x[0]==50:
.   .   .    sLine=sLine.replace(' '+x[1],x[1])
.   .   .    sLine=sLine.replace(x[1]+' ',x[1])
except tokenize.TokenError:
.   pass

- x[0] is the 1st element of the x tuple, and 50 is the code for
OPERAND.
(For those who want to experiment on the x tuple, you can print it
merely by a
"print str(x)". You obtain as many tuples as the elements present in
the line).
- x[1] (the 2nd element of the x tuple) is the Operand itself.

The try/except is one of my bad habits:
the program fails if the line is a multiline.
Ask Alex... I haven't gone deeper.

At the end you have sLine with white spaces stripped...
There is yet a mistake...: this method  strip white spaces also inside
strings.
(I don't care...).

A last word of caution: I haven't tested this extract from my
routine...

This small script is part of a bigger program: a cross-reference tool,
but don't ask me for that...

Bye.



From arserlom at gmail.com  Sun May  8 16:01:58 2005
From: arserlom at gmail.com (arserlom at gmail.com)
Date: 8 May 2005 13:01:58 -0700
Subject: A question about inheritance
In-Reply-To: <mailman.169.1115579506.29826.python-list@python.org>
References: <1115579277.999256.269960@f14g2000cwb.googlegroups.com>
	<mailman.169.1115579506.29826.python-list@python.org>
Message-ID: <1115582518.303610.210000@f14g2000cwb.googlegroups.com>

Thanks.

Jp Calderone wrote:
> On 8 May 2005 12:07:58 -0700, arserlom at gmail.com wrote:
> >Hello I have a question about inheritance in Python. I'd like to do
> >something like this:
> >
> > class cl1:
> >  def __init__(self):
> >   self.a = 1
> >
> > class cl2(cl1):
> >  def __init__(self):
> >   self.b = 2
> >
> >But in such a way that cl2 instances have atributes 'b' AND 'a'.
> >Obviously, this is not the way of doing it, because the __init__
> >definition in cl2 overrides cl1's __init__.
> >
> >Is there a 'pythonic' way of achieving this?
>
>     class cl2(cl1):
>         def __init__(self):
>             cl1.__init__(self)
>             self.b = 2
> 
>   Jp



From theller at python.net  Wed May  4 11:58:53 2005
From: theller at python.net (Thomas Heller)
Date: Wed, 04 May 2005 17:58:53 +0200
Subject: Q: The `print' statement over Unicode
References: <mailman.6.1115221576.29826.python-list@python.org>
Message-ID: <acnbm18i.fsf@python.net>

Fran?ois Pinard <pinard at iro.umontreal.ca> writes:

> Hi, people.  I hope someone would like to enlighten me.
>
> For any application handling Unicode internally, I'm usually careful
> at properly converting those Unicode strings into 8-bit strings before
> writing them out.
>
> However, this morning, I mistakenly forgot to do so before using one
> Unicode string (containing a non-ASCII character) as an argument to
> the `print' statement, and I did _not_ get an error.  This is rather
> surprising to me.  I reread the section of the Python reference manual
> (version 2.3.4, this machine uses 2.3.3 currently), and it does not say
> anything about a special processing for Unicode strings.
>
> In my understanding, when `print' is given an argument which is not
> already a string (I read: 8-bit string), it first gets converted into
> a string (I read: calling __str__).  But if I call `str()' explicitly,
> _then_ I get an error as expected.  The question is, why is there no
> error if I do not call `str()' explicity?
>
> For example, given file `question.py' with this contents:
>
>    # -*- coding: UTF-8 -*-
>    texte = unicode("Fran\xe7ois", 'latin1')
>    print type(texte), repr(texte), texte
>    print type(texte), repr(texte), str(texte)
>
> doing `python question.py' yields:
>
>    <type 'unicode'> u'Fran\xe7ois' Fran?ois
>    <type 'unicode'> u'Fran\xe7ois'
>    Traceback (most recent call last):
>      File "question.py", line 4, in ?
>        print type(texte), repr(texte), str(texte)
>    UnicodeEncodeError: 'ascii' codec can't encode character u'\xe7' \
>       in position 4: ordinal not in range(128)
>
> (last line wrapped for legibility).
>
> So (trying to be crystal clear), why is the first `print' working over
> its third argument, but not the second?  How does `print' convert that
> Unicode string to a 8-bit string for output, if not through `str()'?
> What is missing to the documentation, or to my way of understanding it?

AFAIK, print uses sys.stdout.encoding to encode the unicode string.

Thomas


From could.net at gmail.com  Sat May  7 01:43:11 2005
From: could.net at gmail.com (could ildg)
Date: Sat, 7 May 2005 13:43:11 +0800
Subject: Found python for delphi new web site
In-Reply-To: <1115443739.747455.200590@f14g2000cwb.googlegroups.com>
References: <mailman.124.1115442205.29826.python-list@python.org>
	<1115443739.747455.200590@f14g2000cwb.googlegroups.com>
Message-ID: <311b5ce1050506224361a26ead@mail.gmail.com>

I haven't compile the PyScripter IDE project yet.
Does it support code-insight?

On 6 May 2005 22:28:59 -0700, James <fphsml at gmail.com> wrote:
> It has been around for a while now. But I am glad I visited it again.
> The new PyScripter IDE is great. They should really announce new
> software like these here.
> 
> --
> http://mail.python.org/mailman/listinfo/python-list
>


From mwooden at dtptypes.com  Fri May 27 09:23:19 2005
From: mwooden at dtptypes.com (Malcolm Wooden)
Date: Fri, 27 May 2005 13:23:19 +0000 (UTC)
Subject: Strings for a newbie
References: <d7726f$fdg$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
	<d7730r$qrb$1@n6.co.ru>
Message-ID: <d77707$jo$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>

Yes Sergei, as 3 of the lines are Dim statements, the real code is just 4 
lines, a totally logical. It's not the amout of code thats a probelm, it's 
following the logic and structure thats important. As I said Python.. UGH!

Malcolm


"Sergei Organov" <osv at javad.ru> wrote in message 
news:d7730r$qrb$1 at n6.co.ru...
> "Malcolm Wooden" <mwooden at dtptypes.com> writes:
>
>> I'm trying to get my head around Python but seem to be failing miserably. 
>> I
>> use RealBasic on a Mac and find it an absolute dream! But Python....UGH!
>>
>> I want to put a sentence of words into an array, eg "This is a sentence 
>> of
>> words"
>>
>> In RB it would be simple:
>
> Simple?! 7 lines of code for such a trivial task is simple?!
>
>> Dim s as string
>> Dim a(-1) as string
>> Dim i as integer
>>
>> s = "This is a sentence of words"
>> For i = 1 to CountFields(s," ")
>>   a.append NthField(s," ",i)
>> next
>>
>> That's it an array a() containing the words of the sentence.
>>
>> Now can I see how this is done in Python? - nope!
>
> from string import split
> s = "This is a sentence of words"
> a = split(s)
>
> or,
>
> s = "This is a sentence of words"
> a = s.split()
>
> or even
>
> a = "This is a sentence of words".split()
>
> -- 
> Sergei. 




From steven.bethard at gmail.com  Thu May  5 14:07:40 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Thu, 05 May 2005 12:07:40 -0600
Subject: min max of a list
In-Reply-To: <1115259992.558123.189580@g14g2000cwa.googlegroups.com>
References: <1115245476.036508.273930@g14g2000cwa.googlegroups.com>
	<gaCdnf8Pf9xj7-TfRVn-tQ@comcast.com>
	<1115259992.558123.189580@g14g2000cwa.googlegroups.com>
Message-ID: <temdnRBabsR2_effRVn-gg@comcast.com>

querypk at gmail.com wrote:
> Thanks for that. My version of python does'nt find "groupby". I am
> using python 2.3.2. Is there a way I could do it with out using groupby

itertools.groupby is in Python 2.4. The docs[1] give a Python 
equivalent, so if for some reason you can't upgrade to the current 
version of Python, you can just copy the groupby code from there.

STeVe

[1]http://docs.python.org/lib/itertools-functions.html#l2h-1379


From kst-u at mib.org  Tue May 10 14:58:34 2005
From: kst-u at mib.org (Keith Thompson)
Date: Tue, 10 May 2005 18:58:34 GMT
Subject: Language documentation ( was Re: Computing Industry shams)
References: <1115509201.680334.140840@f14g2000cwb.googlegroups.com>
	<874qdezh76.fsf@kafka.homenet>
	<1415322.AzhuxSBQdk@yahoo.com> <x78y2ot3zq.fsf@bolo.xenadyne.com>
	<1955897.My2EmLpO4s@yahoo.com>
	<pan.2005.05.10.14.08.14.485000@netactive.co.uk>
	<1212926.3xzUY5Pt1A@yahoo.com>
	<pan.2005.05.10.17.47.38.704000@netactive.co.uk>
	<1562690.uMvC404mSK@yahoo.com>
Message-ID: <lnzmv2nc14.fsf@nuthaus.mib.org>

alex goldman <hello at spamm.er> writes:
> Lawrence Kirby wrote:
[snip]
>> My response talks about relevance, not ambiguity.
>
> Well, your response was irrelevant.

This entire discussion is irrelevant to most, if not all, of the
newsgroups to which it's being posted.  comp.lang.c, where I'm reading
this, is for discussion of the C programming language; I see nothing
about C.

-- 
Keith Thompson (The_Other_Keith) kst-u at mib.org  <http://www.ghoti.net/~kst>
San Diego Supercomputer Center             <*>  <http://users.sdsc.edu/~kst>
We must do something.  This is something.  Therefore, we must do this.


From peter at engcorp.com  Fri May 13 09:10:13 2005
From: peter at engcorp.com (Peter Hansen)
Date: Fri, 13 May 2005 09:10:13 -0400
Subject: stop a thread safetely
In-Reply-To: <pan.2005.05.13.12.06.14.991870@gmail.com>
References: <pan.2005.05.13.12.06.14.991870@gmail.com>
Message-ID: <UvCdnaGDcsHBOhnfRVn-vg@powergate.ca>

Zunbeltz Izaola wrote:
> I have a wxPython application that call makes a thread (with threading
> module). In some moment i've to stop the thread but i need to finish a 
> funtion in the thread before it can stop. How can i achive this?

How did you intend to stop the thread in a manner which might be unsafe?
(Hint, unless you're doing something unusual, you can't.)

-Peter


From maxm at mxm.dk  Tue May 10 07:56:47 2005
From: maxm at mxm.dk (Max M)
Date: Tue, 10 May 2005 13:56:47 +0200
Subject: Regarding Mail sending Module
In-Reply-To: <mailman.281.1115725316.29826.python-list@python.org>
References: <mailman.281.1115725316.29826.python-list@python.org>
Message-ID: <4280a0e1$0$253$edfadb0f@dread12.news.tele.dk>

praba kar wrote:
> Dear All,
>       In Php we can do all the mailing operations like
> sending a text as a message, adding attachment to a
> mail, adding additional headers and so on using
> Mail_mime class.  I want to know like that class or
> modules in Python. 
>    I already gone through MimeWriter,smtplib and so
> on. But I can't get clear details. so if anyone know
> regarding this kindly give me answer


You need the 'email' module for reading and writing email messages, and 
the 'smtplib' module for sending them.

-- 

hilsen/regards Max M, Denmark

http://www.mxm.dk/
IT's Mad Science


From tim.peters at gmail.com  Tue May  3 20:34:06 2005
From: tim.peters at gmail.com (Tim Peters)
Date: Tue, 3 May 2005 20:34:06 -0400
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <874qdjc2lb.fsf@uwo.ca>
References: <d4u60o$akh$1@news2.netvision.net.il>
	<mailman.47.1114818531.14961.python-list@python.org>
	<3dg5isF6qe1nhU1@news.dfncis.de> <d4v1an$j7q$1@sea.gmane.org>
	<1f7befae05043000165448b8d@mail.gmail.com>
	<mailman.55.1114846630.14961.python-list@python.org>
	<Pine.SOL.4.33.0505031353330.17143-100000@innovate>
	<1f7befae05050313286dd4a254@mail.gmail.com> <874qdjc2lb.fsf@uwo.ca>
Message-ID: <1f7befae05050317344f9c715@mail.gmail.com>

[Tim Peters, whines about level 7]

[Dan Christensen, gives a huge hint]

The first time I looked at it, I thought "hmm, I should use PIL for
this".  I kept thinking that too <wink> -- but for some reason wanted
to see if there was a clear way to do it without something that
"fancy".  I eventually gave up and did the obvious thing (and of
course that worked).

simple's-good-but-braindead-simple-ain't-always-enough-ly y'rs  - tim


From mj at zopatista.com  Thu May  5 07:34:36 2005
From: mj at zopatista.com (Martijn Pieters)
Date: Thu, 05 May 2005 13:34:36 +0200
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <1115268997.066368.208690@o13g2000cwo.googlegroups.com>
References: <d4u60o$akh$1@news2.netvision.net.il>	<mailman.47.1114818531.14961.python-list@python.org>	<1114924100.296223.114020@g14g2000cwa.googlegroups.com>	<1114927892.321086.60190@z14g2000cwz.googlegroups.com>	<zX%ce.78213$ft1.5056576@phobos.telenet-ops.be>	<Zj2de.78345$a42.5091422@phobos.telenet-ops.be>	<8764y29x3m.fsf@uwo.ca>
	<877jihc7qv.fsf@uwo.ca>	<4279366B.6070800@zopatista.com>	<mailman.24.1115246239.29826.python-list@python.org>
	<1115268997.066368.208690@o13g2000cwo.googlegroups.com>
Message-ID: <d5cvvs$8pn$1@sea.gmane.org>

[SNIP me whining then cheering about level 13]

Dan Bishop wrote:
> You mean there's a hint in that XML-RPC fault?

No, there is a hint in level 12. Remember how you could manipulate the
URL of the image of level 12 to get to the data file for that level. Now
continue that manipulation and don't believe the suggestion about no
more evils. *Then* pay close attention to what you find. If you get a
'Not Found' you either didn't pay attention in the previous step and
have passed over the hint, or you searched in the wrong direction.

Martijn Pieters
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From jepler at unpythonic.net  Mon May 23 08:23:42 2005
From: jepler at unpythonic.net (Jeff Epler)
Date: Mon, 23 May 2005 07:23:42 -0500
Subject: Strange behaviour of floating point constants in imported modules
In-Reply-To: <4291b2c0$1@news.home.net.pl>
References: <4291b2c0$1@news.home.net.pl>
Message-ID: <20050523122341.GF18155@unpythonic.net>

This may be relevant to the problems you're seeing:
    https://sourceforge.net/tracker/?func=detail&atid=305470&aid=774665&group_id=5470

The short story, as the tracker item paints it, is that setting
LC_NUMERIC to anything other than 'C' can give results like the ones you
describe---Python itself should never do this, but third parties code
may.

A web search for python LC_NUMERIC should turn up more about this topic,
probably even some past threads on this mailing list/newsgroup.

Jeff
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From facundobatista at gmail.com  Sun May 15 12:09:16 2005
From: facundobatista at gmail.com (Facundo Batista)
Date: Sun, 15 May 2005 13:09:16 -0300
Subject: Unique Elements in a List
In-Reply-To: <200505091624.39598.jstroud@mbi.ucla.edu>
References: <200505091624.39598.jstroud@mbi.ucla.edu>
Message-ID: <e04bdf3105051509095b2033a1@mail.gmail.com>

On 5/9/05, James Stroud <jstroud at mbi.ucla.edu> wrote:

> > Is there an easy way to grab the Unique elements from a list?

>>> from sets import Set as set
>>> data = [0.1,0.5,0.6,0.4,0.1,0.5,0.6,0.9]
>>> for x in set(data):
...     print x
...
0.5
0.9
0.6
0.4
0.1


.    Facundo

Blog: http://www.taniquetil.com.ar/plog/
PyAr: http://www.python.org/ar/


From steve at holdenweb.com  Fri May 27 11:27:45 2005
From: steve at holdenweb.com (Steve Holden)
Date: Fri, 27 May 2005 11:27:45 -0400
Subject: CygWin ODBC
In-Reply-To: <4296f337$0$38045$5a6aecb4@news.aaisp.net.uk>
References: <4296f337$0$38045$5a6aecb4@news.aaisp.net.uk>
Message-ID: <42973C71.6030007@holdenweb.com>

Simon Faulkner wrote:
> Hi All,
> 
> I am new to Cygwin and am hoping that someone here will be able to tell 
> me how to get ODBC running in Python on Cygwin.
> 
> Maximum gratefullness...
> 
> 
> Simon

There's a trick to this which involves recompiling from source. If you 
aren't experienced with Unix/Linux this might seem a bit intimidating.

The latest version I worked on is mxODBC 2.0.7. If Egenix have released 
something later it may incorporate these changes. Sorry they aren't 
"diff -c" format.

I also remember the need in the past to rename some ".cpp" files to 
".c", but I believe this has now been done in the distributions.

regards
  Steve

diff -rc egenix-mx-commercial-2.0.7/mxCOMMERCIAL.py 
egenix-mx-commercial-2.0.7cygwin/mxCOMMERCIAL.py
*** egenix-mx-commercial-2.0.7/mxCOMMERCIAL.py  Wed Dec  1 13:10:27 2004
--- egenix-mx-commercial-2.0.7cygwin/mxCOMMERCIAL.py    Sat Dec 18 
09:56:27 2004
***************
*** 55,61 ****
   packages = ['mx.ODBC',
               'mx.ODBC.Misc']

! if sys.platform[:3] == 'win':
       packages[len(packages):] = [

           'mx.ODBC.Windows'
--- 55,61 ----
   packages = ['mx.ODBC',
               'mx.ODBC.Misc']

! if sys.platform[:3] == 'win' or sys.platform == 'cygwin':
       packages[len(packages):] = [

           'mx.ODBC.Windows'
***************
*** 89,95 ****
   #
   ext_modules = []

! if sys.platform[:3] == 'win':
       ext_modules[len(ext_modules):] = [

           Extension('mx.ODBC.Windows.mxODBC',
--- 89,95 ----
   #
   ext_modules = []

! if sys.platform[:3] == 'win' or sys.platform == 'cygwin':
       ext_modules[len(ext_modules):] = [

           Extension('mx.ODBC.Windows.mxODBC',
***************
*** 167,173 ****

   ]

! if sys.platform[:3] == 'win':
       data_files[len(data_files):] = [

           'mx/ODBC/Windows/COPYRIGHT',
--- 167,173 ----

   ]

! if sys.platform[:3] == 'win' or sys.platform == 'cygwin':
       data_files[len(data_files):] = [

           'mx/ODBC/Windows/COPYRIGHT',

-- 
Steve Holden        +1 703 861 4237  +1 800 494 3119
Holden Web LLC             http://www.holdenweb.com/
Python Web Programming  http://pydish.holdenweb.com/



From usenet at terabytemusic.cjb.net  Sat May 21 06:49:51 2005
From: usenet at terabytemusic.cjb.net (DJTB)
Date: Sat, 21 May 2005 12:49:51 +0200
Subject: ZODB memory problems (was: processing a Very Large file)
Message-ID: <118u4igq47fl9e0@corp.supernews.com>

[posted to comp.lang.python, mailed to zodb-dev at zope.org]

Hi,

I'm having problems storing large amounts of objects in a ZODB.
After committing changes to the database, elements are not cleared from
memory. Since the number of objects I'd like to store in the ZODB is too
large to fit in RAM, my program gets killed with signal 11 or signal 9...

Below a minimal working (or actually: it doesn't work because of memory
errors)
example code with hopefully enough comments:



# This was suggested by Tim Peters in comp.lang.python thread
# 'processing a Very Large file'
# It is to make sure that no two or more copies of the same object
# reside in memory
class ObjectInterning:
    def __init__(self):
        self.object_table = {}

    def object_intern(self,o):
        return self.object_table.setdefault(o, o)


from sets import Set

# An ExtentedTuple is a tuple with some extra information
# (hence: 'Extended'). Furthermore, the elements of the tuple are
# unique.
# As you can see, ExtendedTuple does not inheret from Persistent.
# It will not be stored in the root of a database directly, it will
# be stored in a Persistent ExtendedTupleTable (see below).
class ExtendedTuple(tuple):

    def __init__(self, els):
        tuple.__init__(self,els)

        # This is a set containing other ExtendedTuple objects
        # which conflicts with self
        # e.g. if self = ExtendedTuple([1,2,3,4]) and
        # other = ExtendedTuple([3,4,5]) then self conflicts with
        # other, because they share one or more elements (in this
        # case:. 3 and 4)
        # So, self.conflicts = Set([ExtendedTuple([3,4,5])])
        #    other.conflicts = Set([ExtendedTuple([1,2,3,4])])
        self.conflicts = Set()

    def __hash__(self):
        return hash(tuple(self))

    def __repr__(self):
        return 'ExtendedTuple(%s)' % str(list(self))


import ZODB
from persistent import Persistent
import random

# The Persistent ExtendedTupleTable generates and stores a large
# amount of ExtendedTuple objects. Since ExtendedTuple contains a
# Set with other ExtendedTuple objects, each ExtendedTuple object
# may get very large.
class ExtendedTupleTable(Persistent):
    def __init__(self):
        self.interning = ObjectInterning()

        # This Set stores all generated ExtendedTuple objects.
        self.ets = Set() # et(s): ExtendedTuple object(s)
        # This dictionary stores a mapping of elements to Sets of
        # ExtendedTuples.
        # eg: self.el2ets[3] = Set([(1,2,3), (3,4,5), (1,3,9)])
        #     self.el2ets[4] = Set([(3,4,5), (2,4,9)])
        self.el2ets = {}  # el: element of an ExtendedTuple object

        # These dictionaries are here for performance optimizations.
        # It is being used to prevent billions of hash()
        # calculations (relatively slow compared to dictionary
        # lookups)
        self._v_el2hs = {} # h(s): hash(es) of ExtendedTuple object(s)
        self._v_h2et = {}
        self._v_et2h = {}

        # The keys of el2ets (and thus the elements of the
        # ExtendedTuple objects) are all in a prespecified range.
        # In this example: range(200):
        self.__el_count = 200
        # Number of ExtendedTuple objects in this ExtendedTupleTable
        self.__et_count = 5000

    # Start generation of ExtendedTuple objects and calculation of
    # conflicts for each ExtendedTuple object
    def calculate_all(self):
        self.calc_ets()
        self.calc_el2ets()
        self.calc_conflicts()



    def add(self, et_uninterned):
        et = self.interning.object_intern(et_uninterned)
        h = self.interning.object_intern(hash(et))
        self.ets.add(et)
        self._v_h2et[h] = et
        self._v_et2h[et] = h
        self._p_changed = True

    def calc_ets(self):
        # Calculate a large amount of ExtendedTuple objects.
        # In this example, the tuples are random, the elements of
        # the tuples are within a prespecified range.
        # The elements of each tuple are unique.
        print 'generating %s random ExtendedTuple objects' % self.__et_count
        for i in xrange(self.__et_count):
            # Create random tuple with unique elements
            l = []
            for el in xrange(self.__el_count/3):
                l.append(random.randint(0,self.__el_count-1))
            et = ExtendedTuple(tuple(Set(l)))
            self.add(et)
        self.__et_count = len(self.ets)

    def calc_el2ets(self):
        '''For each el, calculate which et uses that el'''
        for el in xrange(self.__el_count):
            print 'calculating all ExtendedTuple objects using', el
            self.el2ets[el] = Set([ et for et in self.ets if el in et])
            self._v_el2hs[el] = Set([ self._v_et2h[et] for et in
self.el2ets[el] ])
            self._p_changed = True

    def calc_conflicts(self):
        '''For each et, calculate the set of conflicting ets'''
        self.__et_count = len(self.ets)
        commit_interval = 100
        for i, et in enumerate(self.ets):
            print 'calculating conflicting ExtendedTuple %.2f%%' %
((i+1)*100./self.__et_count)
            # use the el2et dictionary (faster than 'Cartesian'
            # comparison of each ExtendedTuple objects) and an
            # optimization dictionary _v_el2hs to prevent billions
            # of hash() calculations later on
            conflicts_h = [ h for el in et for h in self._v_el2hs[el] ]
            # Make sure each element is unique and store the
            # result as conflicts Set in the current ExtendedTuple
            # object
            conflicts_unique = Set(conflicts_h) - Set([ et ])
            et.conflicts_set = Set([ self._v_h2et[h] for h in
conflicts_unique ])
            self._p_changed = True
            if i % commit_interval == 0:
                print 'committing data to database...'
                # This does NOT seem to work, the memory usage will
                # increase until all memory + swap is used. Then the
                # process gets killed...
                get_transaction().commit(True)
        get_transaction().commit(True)




from ZODB import FileStorage, DB

# Open Database
storage = FileStorage.FileStorage('/tmp/test_extendedtuples.fs')
db = DB(storage)
conn = db.open()
root = conn.root()

name = 'test'

if root.has_key(name):
    del root[name]

root[name] = ExtendedTupleTable()

rt = root[name]
rt.calculate_all()

# if needed, commit final changes and close the database
get_transaction().commit()
conn.close()
db.pack()
db.close()
storage.close()



What should I do to make sure RAM is no longer a limiting factor?
(in other words: The program should work with any (large) value of
self.__range and self.__et_count
Because in my case, self.__et_count = 5000 is only a toy example...)
I'm now working on a PC with 2.5 GB RAM and even that's not enough!

If you think the design of this program is bad, please let me know what you
would do to solve this problem
(calculating and saving tuples + set of conflicts). The only thing I can't
change is that ExtendedTuple inherits from tuple

Thanks in advance,
Stan.






From exarkun at divmod.com  Fri May 27 18:30:32 2005
From: exarkun at divmod.com (Jp Calderone)
Date: Fri, 27 May 2005 22:30:32 GMT
Subject: write to the same file from multiple processes at the same time?
In-Reply-To: <7xmzqgnwbq.fsf@ruckus.brouhaha.com>
Message-ID: <20050527223032.559.367933371.divmod.quotient.11362@ohm>

On 27 May 2005 15:22:17 -0700, Paul Rubin <"http://phr.cx"@nospam.invalid> wrote:
>Jp Calderone <exarkun at divmod.com> writes:
>> >Oh, ok.  But what kind of locks does it use?
>>
>> It doesn't really matter, does it?
>
>Huh?  Sure, if there's some simple way to accomplish the locking, the
>OP's act can do the same thing without SQlite's complexity.
>
>> I'm sure the locking mechanisms it uses have changed between
>> different releases, and may even be selected based on the platform
>> being used.
>
>Well, yes, but WHAT ARE THEY??????

Beats me, and I'm certainly not going to dig through the code to find out :)  For the OP's purposes, the mechanism I mentioned earlier in this thread is almost certainly adequate.  To briefly re-summarize, when you want to acquire a lock, attempt to create a directory with a well-known name.  When you are done with it, delete the directory.  This works across all platforms and filesystems likely to be encountered by a Python program.

Jp


From qwejohn at hotmail.com  Mon May 23 06:34:09 2005
From: qwejohn at hotmail.com (qwejohn at hotmail.com)
Date: 23 May 2005 03:34:09 -0700
Subject: what is addMethod ?
In-Reply-To: <tYhke.8301$5I5.708829@newshog.newsread.com>
References: <1116841257.937815.61910@g43g2000cwa.googlegroups.com>
	<tYhke.8301$5I5.708829@newshog.newsread.com>
Message-ID: <1116844449.826578.245720@g49g2000cwa.googlegroups.com>

Thnks,
I wrongly took it for a standard method;
I found where it is defined (it's part of the project); Tnnks.

John



From ml at dynkin.com  Fri May 20 03:18:16 2005
From: ml at dynkin.com (George Yoshida)
Date: Fri, 20 May 2005 16:18:16 +0900
Subject: Shift-JIS to UTF-8 conversion
In-Reply-To: <1116536705.864784.163540@o13g2000cwo.googlegroups.com>
References: <1116536705.864784.163540@o13g2000cwo.googlegroups.com>
Message-ID: <d6k2vt$2lgv$1@dojima-n0.hi-ho.ne.jp>

PyTJ wrote:

> I need to convert a Japanese Shift-JIS CSV file to Unicode UTF-8.
> 
> My machine is a Windows 98 english computer with Python 2.3.4
> 
> Any hints?.
> 

First, you need to install codecs to support japanese encodings.
Python 2.3.* does not support SJIS by default.

I'll give you two options.

- Japanese Codecs
   http://www.python.jp/Zope/download/JapaneseCodecs
 
http://ftp.python.jp/pub/JapaneseCodecs/JapaneseCodecs-1.4.10.win32-py2.3.exe

- CJKCodecs
   http://cjkpython.i18n.org/
   http://download.berlios.de/cjkpython/cjkcodecs-1.1.win32-py2.3.exe

If you only need Japanese support, Japanese Codecs might be handy.
On the other hand, CJKCodecs can handle much broader encodings.
Aside from that, starting from 2.4, Python ships with CJKCodecs,
so I'd recomment CJKCodecs without reservations.

-- george


From yhdanid at yahoo.com  Mon May 16 17:18:43 2005
From: yhdanid at yahoo.com (Obaid R.)
Date: 16 May 2005 14:18:43 -0700
Subject: Like Christ PBBUH Prayed
References: <1116096706.696830.275140@g44g2000cwa.googlegroups.com>
Message-ID: <1116278323.413749.302480@z14g2000cwz.googlegroups.com>

THE POSTER vs. CHRIST
=====================


For those who follow this frequently re-appearing
thread, and the various responses to it, I wish to
remind them of the following:

1. There is a detailed response to the claims of
the poster here:
http://groups-beta.google.com/group/microsoft.public.windowsxp.network_web/browse_thread/thread/526d20b74c0c5389/4416e29e5d258dd6?q=%22Ron+Grossi:+God+is+not+a+man%22&rnum=1#4416e29e5d258dd6
or as a tinyurl:
http://tinyurl.com/dagan

2. The poster has yet to respond to the issues raised.

3. The poster seems to be preaching a doctrine
that is at odds with what Christ peace and
blessings be upon him (PBBUH) is reported to have
preached in the Gospels.

For one thing, the poster seems to claim that Christ
PBBUH was sent to all peoples, when in fact the
"no one" in the verse he relies on above is taken
out of the gospel's context. The "no one" cannot be
understood as "all people" as this would conflict
with Christ PBBUH explicit and clear words in
Matthew:

"But he answered and said, I am not sent but
unto the lost sheep of the house of Israel."
(Matthew 15: 24)


And so unless the poster wants to pursue and
preach a line that is in direct contradiction to
the explicit and clear preaching of Christ PBBUH,
then he too must accept that the "no one" of (John
14: 6) and the "whoever believes in him" of (John 3:
16, more on this verse and book later) actually
refer to those lost sheep of the house of
Israel only, and only do so in the span of time while
Christ's PBBUH walked this earth, not to the
people of the Gentiles and all the times past and
present.

Repeating the claim of the "no one" and the
"whoever", so as to claim that Christ PBBUH was
sent to all people past and present including
those of the Gentiles, from now until the end of
time will not help the cause of the poster. For as
long as (Matthew 15: 24) is still considered as
part of the Gospel then the poster's case is
defeated and he is shown to be preaching an Anti-
Christ doctrine. Remember that opinions cannot
replace scripture. And repetition cannot make
falsehood into truth, or vice versa.

Secondly, do note that the poster is relying now
on the the book of John, which Christian scholars
themselves tell us that not only is it
anonymous (imagine a court admitting anonymous
evidence as proof) but they also proclaim that the
book is actually adulterated scripture; and this
they do both in words[1] and deeds.[2]



LIKE CHRIST PBBUH PRAYED
========================


For those truth seekers reading this, perhaps it
is worth it to remind you that Christ PBBUH, whom
the poster seems to consider his "Lord", actually
prayed to Almighty God!

What is most amazing here is not only that the
poster is drumming for the worship of a "man"
(Acts 2: 22) and "the son of man" (Luke 9: 58),
when his own scripture proclaims that "God is not
a man ... neither the son of man" (Numbers 23:
19), but he is also calling for the taking as
"Lord" a man and a son of man who has prayed and
did so in the same manner taught to all the
prophets, including Muhammad peace and blessings
be upon them all.


* "And Abram fell on his face: and God talked with
him, saying," (Genesis 17:3)

* "Then Abraham fell upon his face, and laughed, and
said in his heart, Shall a child be born unto him
that is an hundred years old? and shall Sarah,
that is ninety years old, bear?" (Genesis 17:17)

* "And Moses made haste, and bowed his head toward
the earth, and worshipped." (Exodus 34:8)

* "And the LORD spake unto Moses and unto Aaron,
saying, Separate yourselves from among this
congregation, that I may consume them in a moment.
And they fell upon their faces, and said, O God,
the God of the spirits of all flesh, shall one man
sin, and wilt thou be wroth with all the
congregation?" (Numbers 16:20-22)

* "And he said, Nay; but as captain of the host of
the LORD am I now come. And Joshua fell on his
face to the earth, and did worship, and said unto
him, What saith my Lord unto his servant?" (Joshua
5:14)

* "And it came to pass, while they were slaying
them, and I was left, that I fell upon my face,
and cried, and said, Ah Lord GOD! wilt thou
destroy all the residue of Israel in thy pouring
out of thy fury upon Jerusalem?" (Ezekiel 9:8)

* "And Jehoshaphat bowed his head with his face to
the ground: and all Judah and the inhabitants of
Jerusalem fell before the LORD, worshipping the
LORD." (2 Chronicles 20:18)

* "And it came to pass, when I prophesied, that
Pelatiah the son of Benaiah died. Then fell I down
upon my face, and cried with a loud voice, and
said, Ah Lord GOD! wilt thou make a full end of
the remnant of Israel." (Ezekiel 11:13)

* "And when the disciples heard it, they fell on
their face, and were sore afraid." (Matthew
17:6)

* "And he (Jesus) went a little farther, and fell on
his face, and prayed, saying, O my Father, if it
be possible, let this cup pass from me:
nevertheless not as I will, but as thou wilt."
(Matthew 26:39)



IN THE NEWS
===========


Here is a quote from the Qur'an, which was part of
the news very recently, from Chapter/Sura "The
Prophets":

"And unto Solomon (We subdued) the wind in its
raging. It set by his command toward the land
which We had blessed. And of everything We are
Aware.

"And of the evil ones (subdued We unto him)
some who dived (for pearls) for him and did other
work, and We were warders unto them.

"And Job, when he cried unto his Lord, (saying):
Lo! adversity afflicteth me, and Thou art Most
Merciful of all who show mercy.

"Then We heard his prayer and removed that
adversity from which he suffered, and We gave him
his household (that he ad lost) and the like
thereof along with them, a mercy from Our store,
and a remembrance for the worshippers;

"And (mention) Ishmael, and Idris, and Dhu'l-Kifl.
All were of the steadfast.

"And We brought them in unto Our mercy. Lo! they
are among the righteous.

"And (mention) Dhu'n-Nun, when he went off in anger and
deemed that We had no power over him, but he cried
out in the darkness, saying: There is no Allah
save Thee. Be Thou Glorified! Lo! I have been a
wrong-doer.

"Then we heard his prayer and saved him from the
anguish. Thus we save believers.

"And Zachariah, when he cried unto his Lord: My Lord!
Leave me not childless, though Thou art the Best
of inheritors.

"Then We heard his prayer, and bestowed upon him
John, and adjusted his wife (to bear a child) for
him. Lo! they used to vie one with the other in
good deeds, and they cried unto Us in longing and
in fear, and were submissive unto Us.

"And she who was chaste, therefor We breathed into
her (something) of Our Spirit and made her and her
son a token for (all) peoples.

"Lo! this, your religion, is one religion, and I am
your Lord, so worship Me.

"And they have broken their religion (into
fragments) among them, (yet) all are returning unto Us.

"Then whoso doeth some good works and is a
believer, there will be no rejection of his
effort. Lo! We record (it) for him."
(Translation, Qur'an, 21: 81-94)




RESOURCES
=========

[1] Jackson, H. Latimer: "The Problem of the
Fourth Gospel", April 2005,
http://www.earlychristianwritings.com/jackson/chapter1.html

[2] The word "begotten" is now absent from (John 3: 16) in almost
all new revised Bibles. See the Revised Standard Version for one.



From michele.simionato at gmail.com  Tue May 17 12:58:56 2005
From: michele.simionato at gmail.com (Michele Simionato)
Date: 17 May 2005 09:58:56 -0700
Subject: Quick Reference from module doc strings.
In-Reply-To: <mailman.108.1116346297.8733.python-list@python.org>
References: <mailman.65.1116085574.29328.python-list@python.org>
	<1116199904.205240.58300@g49g2000cwa.googlegroups.com>
	<mailman.15.1116204313.8733.python-list@python.org>
	<42880d98$1@nntp0.pdx.net>
	<mailman.27.1116217027.8733.python-list@python.org>
	<1116320306.737808.313530@g44g2000cwa.googlegroups.com>
	<mailman.108.1116346297.8733.python-list@python.org>
Message-ID: <1116349136.477233.205260@z14g2000cwz.googlegroups.com>

Ron Adam:

> Sound great!  Adding a command line parser, I'm going to add a brief
> command line parser to it today, but nothing as elaborate as you have
> already.  Could you post a part of the output as an example?  How is
the
> index built?

For the command line parser, see
http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/278844

Here is an example of output:

http://www.phyast.pitt.edu/~micheles/python/ms.html

(it is a package called "ms" (as "My Stuff") where I put my utilities).

The system works for module of the standard library too, but since
most of the time they do not have docstrings in reST format, there
are ugly formatting errors. But this is a bug of the standard library,
not of my tool ;)

For the index: "minidoc" associates a footnote number to every name,
and then
prints the names in alphabetical order. You can reach the documentation
for that name with a click.

               Michele Simionato



From timr at probo.com  Mon May 23 02:18:29 2005
From: timr at probo.com (Tim Roberts)
Date: Sun, 22 May 2005 23:18:29 -0700
Subject: how to config a comserver in a customize dll?
References: <mailman.237.1116556324.8733.python-list@python.org>
Message-ID: <0bt2919dke9qaticnc9fbk6ii60mah68ha@4ax.com>

"????????" <dreamingpython at 163.com> wrote:

>When i use the below code to create a comserver on Windows OS??i find that
>the com was configed in the file
>python23com.dll,why? if i want to config it in my customize dll,how should i
>do? 

Python is not a compiled language.  It does not produce DLLs.  The real
executable code for a Python COM server is always contained in
python23com.dll.  The registry will tell the interpreter that is called by
python23com.dll where it can find your script.

>class TestPythonCom:
>    _public_methods_ = [ 'SplitString' ]
>    _reg_progid_ = "TestPythonCom.Application"
>    # NEVER copy the following ID
>    # Use "print pythoncom.CreateGuid()" to make a new one.
>    _reg_clsid_ = "{93D78ABA-1F6C-4B1C-97C7-C3700511415A}"
>
>    def SplitString(self, val):
>        return val

-- 
- Tim Roberts, timr at probo.com
  Providenza & Boekelheide, Inc.


From steve at holdenweb.com  Mon May 16 08:56:09 2005
From: steve at holdenweb.com (Steve Holden)
Date: Mon, 16 May 2005 08:56:09 -0400
Subject: An example in point 2
In-Reply-To: <888ECD77-032C-4B6E-A679-4FDC66FC27B2@mac.com>
References: <888ECD77-032C-4B6E-A679-4FDC66FC27B2@mac.com>
Message-ID: <42889869.5030708@holdenweb.com>

Lee Cullens wrote:
>     *From: *      lee_cullens at mac.com <mailto:lee_cullens at mac.com>
>     *Subject: *    *RE:**  **An example in point 2*
>     *Date: *    May 15, 2005 8:35:01 PM EDT
>     *To: *      postmaster at python.org <mailto:postmaster at python.org>
> 
> I guess Python is just a cover for this list.  Since the holly rollers 
> can post whatever they want, now the survivalists are chiming in also.  
> Yet Python content with some harmless vernacular gets kicked.   No point 
> in feeding the idiots that post this garbage so maybe we (as in 
> interested in Python) should start sending it all to you.
> 
More annoying than the occasionaly spam is the fact that we can't just 
let it come and go instead of chiming in with funny/intolerant/impatient 
replies.

The signal-noise ration on this group is incredibly high considering its 
volume. Your own message that didn't make it may have been canned in 
some mass dumping activity on marginally-scoring posts. Don't take it 
personally.

You have *NO* idea how much spam gets canned every day. There is a 
specific problem at this time, but we shoud all be grateful to the 
unsung heroes who work daily to keep c.l.py so free of the annoying spam 
that many other groups suffer from.

regards
  Steve

> ========================================================================================================
> *From: *TheConcernedOne at elsewhere.com <mailto:TheConcernedOne at elsewhere.com>
> *Date: *May 15, 2005 7:33:38 PM EDT
> *To: *python-list at python.org <mailto:python-list at python.org>
> *Subject: The world is really unstable these days......*
> 
> 
> We've got a lot to deal with these days. Terrorism, Recession, <blah, 
> blah, blah>
> 
> 
> ========================================================================================================
> 
> 
> An example in point.  You let the holly rollers clutter up the list, but 
> this little test message gets blocked.  Very inconsiderate and 
> inconsistent of you.  If you can block this then you can block all the 
> holly roller garbage.  
> 
> ========================================================================================================
>     *From: *      lee_cullens at mac.com <mailto:lee_cullens at mac.com>
>     *Subject: *    *Re: Jesus said, "..."*
>     *Date: *    May 15, 2005 1:52:43 PM EDT
>     *To: *      python-list at python.org <mailto:python-list at python.org>
> 
> The annoying thing about this junk mail is if one receives just a digest 
> (otherwise the junk mail filter cans it).  Funny how one perfectly 
> innocent word can hold up a post for review, but this sort of thing gets 
> through every time????
> 
> Lee C
> 
> 
> 


-- 
Steve Holden        +1 703 861 4237  +1 800 494 3119
Holden Web LLC             http://www.holdenweb.com/
Python Web Programming  http://pydish.holdenweb.com/



From m at m.com  Mon May  2 09:11:45 2005
From: m at m.com (monkey)
Date: Mon, 2 May 2005 21:11:45 +0800
Subject: Comparision of GUI framworks
References: <d554en$rm7$02$1@news.t-online.com>
Message-ID: <4276270e$1_1@rain.i-cable.com>

wxPython rules ( ;
Go to http://wxpython.org for details...


"Florian Lindner" <Florian.Lindner at xgm.de> ???
news:d554en$rm7$02$1 at news.t-online.com ???...
> Hello,
> I've read the chapter in the Python documentation, but I'm interested in a
a
> more in-depth comparision. Especially regarding how pythonic it is and how
> well it performs and looks under Windows.
> I've some C++ experiences with Qt, so I'm very interested to have PyQt
> compared to wxWindows and Tk. How fast does PyQt catches up with the
> versiones released from Trolltech? etc..
>
> Thx,
> Florian




From mwm at mired.org  Mon May 16 09:22:16 2005
From: mwm at mired.org (Mike Meyer)
Date: Mon, 16 May 2005 08:22:16 -0500
Subject: Reg Date string conversion into timestamp function
References: <mailman.39.1116247518.8733.python-list@python.org>
Message-ID: <861x87b913.fsf@guru.mired.org>

praba kar <prabapython at yahoo.co.in> writes:

> Dear All,
>
>      I have doubt regarding date string to time
> conversion function.  In Python I cannot find flexible
> date string conversion function like php strtotime. I
> try to use following type
> function
> 1) parsedate function failed if a date string
> like below format "16-MAY-2005 01:26"

parsedate is documented as trying to parse RFC 2822 dates. Your
example isn't one.

> 2)parsedate_tz function also failed if a date string
> is different format

See the above comments for why.

> if any one find some other date string conversion
> function kindly let me know

In my experience, it's not very common to have to deal with arbitrary
time/date strings formats. Typically, a source will only provide date
strings in one format, so you only have to be able to deal with that
format in your application. For instance, all dates in email headers
should follow RFC2822, which means the parsedate you found is adequate
for any application dealing with email headers.

Given the wide variety of date strings possible in the wild, a routine
that swallows a such a string and produces a date is going to have to
guess what format is being used - and there are formats that can't be
told apart for some dates. As such, such a routine isn't very
pythonic.

With all that said, you can use strptime to buid a date/time
parser. If you really need to deal with multiple formats from one
source, maybe if you describe your application some help could be
provided.

        <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From greg at cosc.canterbury.ac.nz  Fri May 27 00:50:57 2005
From: greg at cosc.canterbury.ac.nz (Greg Ewing)
Date: Fri, 27 May 2005 16:50:57 +1200
Subject: Pyrex: step in for loop
In-Reply-To: <3fmtshF8hj7vU1@individual.net>
References: <3fmtshF8hj7vU1@individual.net>
Message-ID: <3fnn9vF8busmU1@individual.net>

Luis P. Mendes wrote:

> I'm trying to improve speed in a module and substituted the pythonic
> 'for in range()' for 'for i from min < i < max:'
> 
> But, I need to define a step for the i variable.  How can I do it?

If you want maximum clarity, I'd suggest using the for-loop
to iterate over a contiguous range of integers and an expression
that maps the loop variable to whatever you want.

If you want the maximum possible speed, it *may* be faster
to use a while loop instead and do your own index updating.
But profile to make sure.

-- 
Greg Ewing, Computer Science Dept,
University of Canterbury,	
Christchurch, New Zealand
http://www.cosc.canterbury.ac.nz/~greg


From mauriceling at acm.org  Fri May  6 04:24:21 2005
From: mauriceling at acm.org (Maurice LING)
Date: Fri, 06 May 2005 18:24:21 +1000
Subject: hard memory limits
Message-ID: <d5f9jl$k6d$1@domitilla.aioe.org>

Hi,

I think I've hit a system limit in python when I try to construct a list 
of 200,000 elements. My error is

malloc: vm_allocate (size = 2400256) failed......

Just wondering is this specific to my system or what? Will adding more 
RAM helps in this case?

Thanks and cheers
Maurice


From piet at cs.uu.nl  Thu May 26 09:22:37 2005
From: piet at cs.uu.nl (Piet van Oostrum)
Date: Thu, 26 May 2005 15:22:37 +0200
Subject: What are OOP's Jargons and Complexities?
References: <1116843761.619249.144790@g47g2000cwa.googlegroups.com>
	<bAske.14563$yx.14338@fe08.lga>
	<3584469.Aerji1NdQr@yahoo.com> <qEuke.24657$NZ1.533@fe09.lga>
	<slrnd95l5i.r5.tassilo.von.parseval@localhost.localdomain>
Message-ID: <wzu0kqazqa.fsf@ordesa.cs.uu.nl>

>>>>> "Tassilo v. Parseval" <tassilo.von.parseval at rwth-aachen.de> (TvP) wrote:

>TvP> Most often, languages with strong typing can be found on the functional
>TvP> front (such as ML and Haskell). These languages have a dynamic typing
>TvP> system. 

What do you mean with: 'Haskell has a dynamic typing system'?
-- 
Piet van Oostrum <piet at cs.uu.nl>
URL: http://www.cs.uu.nl/~piet [PGP]
Private email: piet at vanoostrum.org


From jurgenex at hotmail.com  Thu May 12 22:55:59 2005
From: jurgenex at hotmail.com (Jürgen Exner)
Date: Fri, 13 May 2005 02:55:59 GMT
Subject: [perl-python] Range function
References: <1115951576.138445.51080@z14g2000cwz.googlegroups.com>
Message-ID: <3HUge.14415$nX1.6455@trnddc09>

Xah Lee wrote:
> Today we'll be writing a function called Range.

I don't think so. Unless you meant to write "Today WE'll be writing ...."

> The Perl documentation is as follows.

Bullshit. The Perl documentation is part of any Perl installation but you 
didn't link to it anywhere left alone quote it.
Actually I'm glad you didn't, it's quite large after all.

jue





From zunbeltz at gmail.com  Tue May 31 03:17:55 2005
From: zunbeltz at gmail.com (Zunbeltz Izaola)
Date: Tue, 31 May 2005 09:17:55 +0200
Subject: avl tree
References: <pan.2005.05.30.15.30.09.93892@gmail.com>
	<m27jhg7ci2.fsf@despammed.com>
Message-ID: <pan.2005.05.31.07.17.55.351571@gmail.com>

On Mon, 30 May 2005 21:13:57 +0200, Berthold H?llmann wrote:

> 
> I'm afraid you won't be happy with the code. It's very old and likely
> won't compile. We have an inhouse version of this module which
> compiles and run on Sparc solaris (32 Bit) and linux x86 with Python
> up to 2.4. I fixed some warnigs just today for compilation on Linux
> x86_64, it also seems to work on this platform now. Installation is
> setup.py based. I'm quite sure we once sent patches to Sam Rushing,
> but they never made it into his release. I'll try to publish our
> version the next days. 

Thanks. I will be looking forward to the release.

regards,

Zunbeltz

> 
> Regards
> Berthold



From fredrik at pythonware.com  Thu May 12 16:56:01 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 12 May 2005 22:56:01 +0200
Subject: Python Polymorphism
References: <20050512200045.85674.qmail@web52604.mail.yahoo.com>
Message-ID: <d60feg$hd0$1@sea.gmane.org>

Carlos Moreira wrote:

> Supose that I want to create two methos (inside a
> class) with exactly same name, but number of
> parameters different:

that's known as multimethods, or multiple dispatch.  it's a kind of
polymorphism; it's not the only way to do it, nor is it the only thing
that qualifies as polymorphism.

(in OO lingo, polymorphism usually means that a variable can hold
objects of different types/classes, and that the language can per-
form a given operation on an object without having to know in ad-
vance what type/class it belongs to).

Python only supports single-dispatch in itself, but you can use the
existing mechanisms to implement multimethods in different ways.
for some ways to do it, see:

    http://www.artima.com/weblogs/viewpost.jsp?thread=101605
    http://www-106.ibm.com/developerworks/library/l-pydisp.html

however, solving your problem is of course trivial; just change

> class myClass:
>      myAttribute = 0
>      def myMethod(self):
>           self.myAttribute += 1
>      def myMethod(self, myValue):
>           self.myAttribute += myValue

to

    class myClass:
        myAttribute = 0
        def myMethod(self, myValue=1):
            self.myAttribute += myValue

and you're done.

> I want to use the power of polymorphism to modelate
> the problem.

the problem you described can be trivially solved with a default
argument.  maybe you should come up with a more realistic pro-
blem?

</F>





From martin.witte at gmail.com  Fri May  6 18:46:19 2005
From: martin.witte at gmail.com (wittempj@hotmail.com)
Date: 6 May 2005 15:46:19 -0700
Subject: Reference to self not passed to member function
In-Reply-To: <mailman.113.1115418785.29826.python-list@python.org>
References: <mailman.113.1115418785.29826.python-list@python.org>
Message-ID: <1115419579.413239.97130@z14g2000cwz.googlegroups.com>

I think it is more clear to rephrase your code as:
-#!/usr/bin/env python
-class bob(object):
-    def __init__(self,**kwargs):
-        print kwargs
-        for fname,func in kwargs.items():
-            setattr(self, fname, lambda *args : func(*args))
-
-def doit():
-    print "wuzzup?"
-
-
-abob = bob(sayyoudo=doit)
-
-abob.sayyoudo()
outpu is now:
martin at ubuntu:~$ ./test.py
{'sayyoudo': <function doit at 0xb7dfcdf4>}
wuzzup?
martin at ubuntu:~$

so property sayyoudo points to method doit



From claird at lairds.us  Wed May 11 11:08:03 2005
From: claird at lairds.us (Cameron Laird)
Date: Wed, 11 May 2005 15:08:03 GMT
Subject: pyvm -- faster python
References: <mailman.164.1115548611.29826.python-list@python.org>
	<1115561483.741761.212140@f14g2000cwb.googlegroups.com>
	<m102l2-9qr.ln1@home.rogerbinns.com>
Message-ID: <2fi9l2-tft.ln1@lairds.us>

In article <m102l2-9qr.ln1 at home.rogerbinns.com>,
Roger Binns <rogerb at rogerbinns.com> wrote:
>> could You tell us a bit more about Your motivation to create an
>> alternative C-Python interpreter?
>
>I'd also be curious to know if the performance gains would remain
>once it gets fleshed out with things like closures, long numbers,
>new style classes and a C library compatibility shim.
>
>Roger 
>
>

And Unicode.  And ...


From philippe at philippecmartin.com  Sat May 28 17:43:08 2005
From: philippe at philippecmartin.com (Philippe C. Martin)
Date: Sat, 28 May 2005 21:43:08 GMT
Subject: String manipulations
References: <1117316427.826830.189260@g14g2000cwa.googlegroups.com>
Message-ID: <MB5me.3507$4N2.3160@newssvr30.news.prodigy.com>

Multiply them by 10000 ?

Lorn wrote:

> I'm trying to work on a dataset that has it's primary numbers saved as
> floats in string format. I'd like to work with them as integers with an
> implied decimal to the hundredth. The problem is that the current
> precision is variable. For instance, some numbers have 4 decimal places
> while others have 2, etc. (10.7435 vs 1074.35)... all numbers are of
> fixed length.
> 
> I have some ideas of how to do this, but I'm wondering if there's a
> better way. My current way is to brute force search where the decimal
> is by slicing and then cutoff the extraneous numbers, however, it would
> be nice to stay away from a bunch of if then's.
> 
> Does anyone have any ideas on how to do this more efficiently?
> 
> Many Thanks,
> Lorn



From sjmachin at lexicon.net  Wed May 18 22:36:09 2005
From: sjmachin at lexicon.net (John Machin)
Date: Thu, 19 May 2005 12:36:09 +1000
Subject: Extracting multiple zip files in a directory
References: <1116462658.723097.134390@g43g2000cwa.googlegroups.com>
Message-ID: <5vtn81h8qt9mk73etq0r3e02uqsdjf5jo1@4ax.com>

On 18 May 2005 17:30:58 -0700, "Lorn" <efoda5446 at yahoo.com> wrote:

>I've been working on this code somewhat succesfully, however I'm unable
>to get it to iterate through all the zip files in the directory. As of
>now it only extracts the first one it finds. If anyone could lend some
>tips on how my iteration scheme should look, it would be hugely
>appreciated. Here is what I have so far:
>
>import zipfile, glob, os
>
>from os.path import isfile
>fname = filter(isfile, glob.glob('*.zip'))
>for fname in fname:

Here's your main problem. See replacement below.

>    zf =zipfile.ZipFile (fname, 'r')
>    for file in zf.namelist():
>        newFile = open ( file, "wb")
>        newFile.write (zf.read (file))
>        newFile.close() 
>    zf.close()

zipnames = filter(isfile, glob.glob('*.zip'))
for zipname in zipnames:
    zf =zipfile.ZipFile (zipname, 'r')
    for zfilename in zf.namelist(): # don't shadow the "file" builtin
        newFile = open ( zfilename, "wb")
        newFile.write (zf.read (zfilename))
        newFile.close() 
    zf.close()

Instead of filter, consider:

zipnames = [x for x in glob.glob('*.zip') if isfile(x)]

Cheers,
John


From franz.steinhaeusler at utanet.at  Mon May  2 09:34:03 2005
From: franz.steinhaeusler at utanet.at (Franz Steinhaeusler)
Date: Mon, 02 May 2005 15:34:03 +0200
Subject: Which IDE is recommended?
References: <426f90ac$1_2@rain.i-cable.com>
	<9f7v619jhigbtoksslnr88f4idoc6ejvu3@4ax.com>
	<1115039282.069052.287920@o13g2000cwo.googlegroups.com>
	<ccac7115br3kqki0dpqic9pb673h5ghvql@4ax.com>
Message-ID: <jtac71lmd02k8g1j7dimnokak6l1g811b8@4ax.com>

On Mon, 02 May 2005 15:29:58 +0200, Franz Steinhaeusler
<franz.steinhaeusler at utanet.at> wrote:

>3) I think, you meant "Code Completition":
>for example you type: os. and with the "." os.chmod, os.chdir, ...
>appear in a completition list box.

BTW: If it doesn't seem to work: Make sure, to enable it
in Options=>Enable Autocompletition.
You can also select under Plugin Preferences "Code Completition Enabled
by default".

For other questions, you are welcome to ask in the tracker or
Public Forums.

-- 
Franz Steinh?usler
http://drpython.sourceforge.net/
http://mitglied.lycos.de/drpython/


From jerf at jerf.org  Wed May  4 14:44:37 2005
From: jerf at jerf.org (Jeremy Bowers)
Date: Wed, 04 May 2005 14:44:37 -0400
Subject: How to write this regular expression?
References: <mailman.139.1115189526.6583.python-list@python.org>
	<maednQfrx_iwL-XfRVn-hA@powergate.ca>
	<mailman.159.1115209494.6583.python-list@python.org>
Message-ID: <pan.2005.05.04.18.44.37.48366@jerf.org>

On Wed, 04 May 2005 20:24:51 +0800, could ildg wrote:

> Thank you.
> 
> I just learned how to use re, so I want to find a way to settle it by
> using re. I know that split it into pieces will do it quickly.

I'll say this; you have two problems, splitting out the numbers and
verifying their conformance to some validity rule.

I strongly recommend treating those two problems separately. While I'm not
willing to guarantee that an RE can't be written for something like ("[A
number A]_[A number B]" such that A < B) in the general case, it won't be
anywhere near as clean or as easy to follow if you just write an RE to
extract the numbers, then verify the constraints in conventional Python.

In that case, if you know in advance that the numbers are guaranteed to be
in that format, I'd just use the regular expression "\d+", and the
"findall" method of the compile expression:

Python 2.3.5 (#1, Mar  3 2005, 17:32:12) 
[GCC 3.4.3  (Gentoo Linux 3.4.3, ssp-3.4.3-0, pie-8.7.6.6)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import re
>>> m = re.compile("\d+") 
>>> m.findall("344mmm555m1111")
['344', '555', '1111']
>>>

If you're checking general matching of the parameters you've given, I'd
feel no shame in checking the string against r"^(_\d+){1,3}$" with .match
and then using the above to get the numbers, if you prefer that. (Note
that I believe .match implies the initial ^, but I tend to write it
anyways as a good habit. Explicit better than implicit and all that.)

(I just tried to capture the three numbers by adding a parentheses set
around the \d+ but it only gives me the first. I've never tried that
before; is there a way to get it to give me all of them? I don't think so,
so two REs may be required after all.)


From lycka at carmen.se  Tue May 31 07:46:53 2005
From: lycka at carmen.se (Magnus Lycka)
Date: Tue, 31 May 2005 13:46:53 +0200
Subject: eric3 question
In-Reply-To: <d7gubi$98v$1@ctb-nnrp2.saix.net>
References: <MSGID_2=3A5025=2F3.131_429bd668@fidonet.org>
	<d7gubi$98v$1@ctb-nnrp2.saix.net>
Message-ID: <d7hird$1mu$1@wake.carmen.se>

Gerrit van Dyk wrote:
> Try using raw_input() instead of the sys.stdin.readline(). raw_input() 
> is the preferred way of getting console input.

Is it? Guido's "Python Regrets" slides (Google for them) seems
to say the opposite. Besides, that's not the problem here...

Alexander Zatvornitskiy wrote:
 > I'am using eric3 IDE under win32 (snapshot 2005-04-10), and have a 
trouble. I
 > use this code:
 >     print "enter q to quit, or smthing else to continue"
 >     while not sys.stdin.readline()=="q":
 >         smthing(else)

That will actually work in a vanilla Unix Python interpreter
if you type q followed by Ctrl-D twice, but I suspect that's
not what you intended...

The readline method includes the whole line, including the
linefeed character if you press q followed by ENTER. If you
change it to...

    while not sys.stdin.readline()=="q\n":

...I guess it will work in eric3. (It works in IDLE then.)
You might even want something more robust, such as

while not sys.stdin.readline().strip().lower() == "q":

In general, your construct makes it a bit difficult for you
to debug your own code. If you had written it like below...

while True:
     inp = sys.stdin.readline()
     if inp == 'q':
         break
     smthing(else) # Not that you can use else as a name...

...it would have been trivial to insert "print repr(inp)"
which ought to have given you a clue of what was going on...

Changes and experiments like that are very easy to do in
Python. It beats staring at the code in confusion 99 times
out of 100. It's typically much faster than asking on c.l.py,
although not educational for as many people... ;)




From rbt at athop1.ath.vt.edu  Wed May 11 15:36:26 2005
From: rbt at athop1.ath.vt.edu (rbt)
Date: Wed, 11 May 2005 15:36:26 -0400
Subject: Jesus said, "I am the way, the truth and the life: no one can
	come to the Father(God)(in Heaven), but by me." (John 14:6) This means
	that if you die without trusting in Jesus Christ as your Lord and
	Saviour
	you will die in your sins and be forever separated from the love of God
	in a place called Hell. The Holy Bible descibes Hell as a place of
	eternal
	torment, suffering, pain and agony for all those who have rejected Jesus
	Christ. The good news is that you can avoid Hell by allowing Jesus
	Christ
	to save you today. Only then will you have true peace in your life
	knowing that no matter what happens you are on your way to Heaven. by
	BluWater0523@yahoo.com
In-Reply-To: <M%qge.1317047$Xk.244810@pd7tw3no>
References: <1115824563.613661.169620@g47g2000cwa.googlegroups.com>
	<M%qge.1317047$Xk.244810@pd7tw3no>
Message-ID: <d5tmrq$5vt$1@solaris.cc.vt.edu>

don freeman wrote:
> The truth is, Jesus should never have torn down the fig tree. He got so 
> pissed off at the fig tree for not having figs, even though it wasn't 
> fig season. This was not the action of someone who has even a little 
> truth and light.
> 
> Imagine if Jesus came back now. I'd hate to see his road rage.
> 

Who is this Jesus you are talking about? Does he know Python or 
something? What do fig trees have to do with Python and/or Jesus?


From tjreedy at udel.edu  Wed May 11 19:57:20 2005
From: tjreedy at udel.edu (Terry Reedy)
Date: Wed, 11 May 2005 19:57:20 -0400
Subject: Python Args By Reference
References: <1115769308.136143.74080@f14g2000cwb.googlegroups.com><1182j1daaepv6f4@corp.supernews.com>
	<1115787330.723188.295610@f14g2000cwb.googlegroups.com>
Message-ID: <d5u5mj$dkn$1@sea.gmane.org>


"ncf" <nothingcanfulfill at gmail.com> wrote in message 
news:1115787330.723188.295610 at f14g2000cwb.googlegroups.com...
> Example C Code:
> #define P(a,b,c,d,e,f,g,h,x,K) \
> { \
> temp1 = h + S3(e) + F1(e,f,g) + K + x; \
> temp2 = S2(a) + F0(a,b,c); \
> d += temp1; h = temp1 + temp2; \
> }

> Python Code:
> def P(a,b,c,d,e,f,g,h,x,K):
>    temp1 = h + S3(e) + F1(e,f,g) + K + x
>    temp2 = S2(a) + F0(a,b,c)
>    d += temp1; h = temp1 + temp2

Your problem is that you are replacing a C macro, which is inlined and 
affects the original 'namespace' in which it appears, and which does not 
have a direct Python equivalent, with a Python function (admittedly 
slower), which performs its calculation in a separate namespace.  So you 
have to pass the results back to the calling namespace.  Simple enough: 
make the last line of P

     return d+temp1, temp1+temp2

and the call

    a4,a8 = P(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10)

The stuff about mutability and calling conventions is important to learn 
eventually but seems beside the point for your immediate application.

Terry J. Reedy





From jjl at pobox.com  Tue May 17 15:48:17 2005
From: jjl at pobox.com (John J. Lee)
Date: 17 May 2005 19:48:17 +0000
Subject: Python forum
References: <mailman.84.1116320178.8733.python-list@python.org>
Message-ID: <87k6lxk51a.fsf@pobox.com>

Jonas Melian <jonasmg at softhome.net> writes:

> I'm going to say a suggestion, why don't you create a forum like the one
> of Ruby (http://www.rubyforums.com/)? for the novices this is a great
> help, better than a mail list
[...]

Web forums do reach a different audience.  Maybe python.org should
have a 'web forum' link to gmane.org's web interface for c.l.py?


John


From nicolas.lehuen at gmail.com  Wed May 25 03:44:48 2005
From: nicolas.lehuen at gmail.com (nicolas.lehuen at gmail.com)
Date: 25 May 2005 00:44:48 -0700
Subject: Comparing 2 similar strings?
In-Reply-To: <24a6d$428b9c10$d1b717f8$2300@PRIMUS.CA>
References: <24a6d$428b9c10$d1b717f8$2300@PRIMUS.CA>
Message-ID: <1117007088.255960.87120@o13g2000cwo.googlegroups.com>

William Park a ?crit :
> How do you compare 2 strings, and determine how much they are "close" to
> each other?  Eg.
>     aqwerty
>     qwertyb
> are similar to each other, except for first/last char.  But, how do I
> quantify that?
>
> I guess you can say for the above 2 strings that
>     - at max, 6 chars out of 7 are same sequence --> 85% max
>
> But, for
>     qawerty
>     qwerbty
> max correlation is
>     - 3 chars out of 7 are the same sequence --> 42% max
>
> (Crossposted to 3 of my favourite newsgroup.)

Hi,

If you want to use phonetic comparison, here are some algorithms that
are reportedly more efficient than Soundex :

Double-Metaphone
NYSIIS
Phonex

Of course, phonetic algorithms have a lot of disadvantages, the main
one being that they know about one way to pronounce words (usually a
rather rigid, anglo-saxon way) which may not be the right way (hence
the examples given before for Gaellic surnames). But these ones are far
"better" than soundex.

Regards,

Nicolas Lehuen



From piet at cs.uu.nl  Tue May 31 17:28:17 2005
From: piet at cs.uu.nl (Piet van Oostrum)
Date: Tue, 31 May 2005 23:28:17 +0200
Subject: The need to put "self" in every method
References: <1117554344.938440.54700@g14g2000cwa.googlegroups.com>
Message-ID: <wzu0kj9jbi.fsf@ordesa.lan>

>>>>> "Fernando M." <fernandomirandamuro at gmail.com> (FM) wrote:

>FM> Hi,
>FM> i was just wondering about the need to put "self" as the first
>FM> parameter in every method a class has because, if it's always needed,
>FM> why the obligation to write it? couldn't it be implicit?

>FM> Or is it a special reason for this being this way?

There is.
Inside a method there are 3 kinds of identifiers:
- local ones e.g. parameters and local variables
- global ones (actually module-level)
- instance variables and methods

Because Python has no declarations there must be a different way to
indicate in which category an identifier falls. For globals it is done with
the 'global' keyword (which actually is a declaration), for instance
variables the dot notation (object.name) is used and the rest is local.
Therefore every instance variable or instance method must be used with the
dot notation, including the ones that belong to the object `itself'. Python
has chosen that you can use any identifier to indicate the instance, and
then obviously you must name it somewhere. It could have chosen to use a
fixed name, like 'this' in Java or C++. It could even have chosen to use a
keyword 'local' to indicate local ones and let instance ones be the
default. But if instance variable would be implicit, local ones should have
been explicit.
-- 
Piet van Oostrum <piet at cs.uu.nl>
URL: http://www.cs.uu.nl/~piet [PGP]
Private email: piet at vanoostrum.org


From mefjr75 at hotmail.com  Sun May 15 01:34:33 2005
From: mefjr75 at hotmail.com (M.E.Farmer)
Date: 14 May 2005 22:34:33 -0700
Subject: incorrect(?) shlex behaviour
References: <1116102603.247959.284790@g49g2000cwa.googlegroups.com>
Message-ID: <1116135273.280659.23590@g47g2000cwa.googlegroups.com>

bill wrote:
> Consider:
> >>> import shlex
> >>> shlex.split('$(which sh)')
> ['$(which', 'sh)']
>
> Is this behavior correct?  It seems that I should
> either get one token, or the list
> ['$','(','which','sh',')'],
> but certainly breaking it the way it does is
> erroneous.
>
> Can anyone explain why the string is being split
> that way?
This may help.
http://www.python.org/dev/doc/devel/lib/module-shlex.html
This works on Python 2.4:
>>> import shlex
>>> sh = shlex.shlex('$(which sh)')
>>> sh.get_token()
'$'
>>> sh.get_token()
'('
>>> sh.get_token()
'which'
>>> sh.get_token()
'sh'
>>> sh.get_token()
')'
>>> sh.get_token()
etc...

Python 2.2 and maybe lower:
>>> import shlex
>>> import StringIO
>>> s = StringIO.StringIO('$(which sh)')
>>> sh = shlex.shlex(s)
>>> sh.get_token()
'$'
>>> sh.get_token()
'('
>>> sh.get_token()
'which'
>>> sh.get_token()
'sh'
>>> sh.get_token()
')'
>>> sh.get_token()
etc...

Hth,
M.E.Farmer



From news at NOwillmcguganSPAM.com  Tue May 24 18:00:36 2005
From: news at NOwillmcguganSPAM.com (Will McGugan)
Date: Tue, 24 May 2005 23:00:36 +0100
Subject: pygame 1.6 for windows (python2.4)
In-Reply-To: <1116969098.442603.193670@g43g2000cwa.googlegroups.com>
References: <1116959151.370529.261690@g49g2000cwa.googlegroups.com>
	<429380c5$0$24449$da0feed9@news.zen.co.uk>
	<1116969098.442603.193670@g43g2000cwa.googlegroups.com>
Message-ID: <4293a405$0$23946$db0fefd9@news.zen.co.uk>

bc wrote:
> Thanks for the reply, Will... I have been to the site, but I get a "URL
> not found error" when I try the pygame 1.6 for python24 link;  I guess
> I will just keep trying until the HTML is fixed.
> 

Does seem to be broken at the moment. I've uploaded a copy to my server..

http://www.willmcgugan.com/pygame-1.6.win32-py2.4.exe

Will
-- 
http://www.willmcgugan.com
"".join( [ {'*':'@','^':'.'}.get(c,None) or chr(97+(ord(c)-84)%26) for c 
in "jvyy*jvyyzpthtna^pbz" ] )


From mefjr75 at hotmail.com  Sun May 15 13:12:30 2005
From: mefjr75 at hotmail.com (M.E.Farmer)
Date: 15 May 2005 10:12:30 -0700
Subject: A new to Python question
In-Reply-To: <4286fffb.215424243@news.oz.net>
References: <1116088663.428932.130860@g43g2000cwa.googlegroups.com>
	<1116102355.715816.192840@z14g2000cwz.googlegroups.com>
	<mailman.12.1116136959.15315.python-list@python.org>
	<4286fffb.215424243@news.oz.net>
Message-ID: <1116177150.371043.212050@o13g2000cwo.googlegroups.com>

Fredrik and Bengt:
Thank you for the time.
I will study the docs and play with the shell till this is firm.
M.E.Farmer



From jean_seb at videotron.ca  Tue May 17 13:21:11 2005
From: jean_seb at videotron.ca (=?ISO-8859-1?Q?Jean-S=E9bastien_Guay?=)
Date: Tue, 17 May 2005 13:21:11 -0400
Subject: Problem listing services with wmi
In-Reply-To: <9A28C052FF32734DACB0A288A3533991EBB821@vogbs009.gb.vo.local>
References: <9A28C052FF32734DACB0A288A3533991EBB821@vogbs009.gb.vo.local>
Message-ID: <428A2807.1010908@videotron.ca>

Hi again Tim,

>Well I honestly don't know if this will go any further,
>but the following code uses the win32service module from
>pywin32 to collect the service information, on the off-chance
>that it *won't* fail where WMI does. I can't easily test it
>since the script doesn't raise an error on my machine.
>  
>

Seems like your hunch was right, the first loop completes correctly. 
Adding a counter to both loops shows that getting services from 
win32service.EnumServicesStatus() gets 108 services, and getting them 
through WMI gets to 87 and then halts with the previously mentioned error :

Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File "G:\Python-2.4\Lib\site-packages\win32com\client\util.py", line 
83, in next
    return _get_good_object_(self._iter_.next())
pywintypes.com_error: (-2147217398, 'OLE error 0x8004100a', None, None)

 From examining your code I imagine you tried to catch the exception, 
but it didn't work because the exception is thrown on the "for" line and 
not when getting the service's Caption property... So it stopped at 87 
anyways. And indeed, the "only in win32" list shows 21 entries ( 
len(win32_names - wmi_names) = 108-87 = 21 ).

[...snip code...]

># Not sure if you're running 2.3/2.4
>  
>

Python 2.4 on Windows XP SP2 here.

Do you think we're getting anywhere with this? If not, then I'll just 
use the "win32" method of getting the service list, even though it isn't 
as pretty. I don't want to waste your time on something that may have 
more to do with my machine than anything else... But if you want to try 
and get to the bottom of this, I have no problem with trying out other 
suggestions.

Thanks a lot, just by your small scripts I've already learned a lot more 
about Python!

J-S

-- 
___________________________________________
Jean-S?bastien Guay   jean_seb at videotron.ca
             http://whitestar02.webhop.org/



From peter at engcorp.com  Sat May 14 10:27:21 2005
From: peter at engcorp.com (Peter Hansen)
Date: Sat, 14 May 2005 10:27:21 -0400
Subject: Multiple "cmp"s chained one after another
In-Reply-To: <d64pgi$tc8$1@news2.zwoll1.ov.home.nl>
References: <d64io9$s6o$05$1@news.t-online.com>
	<d64pgi$tc8$1@news2.zwoll1.ov.home.nl>
Message-ID: <yIadnSai_7pVlxvfRVn-jw@powergate.ca>

vincent wehren wrote:
> "Volker Grabsch" <volker_grabsch at v.notjusthosting.com> schrieb im 
> Newsbeitrag news:d64io9$s6o$05$1 at news.t-online.com...
> | However, I don't want to sort them the default way. These are birthdays,
> | so only the month and day do matter, not the year. E.g.:
> |
...
> If you don't care about the year, why not just "normalize" the year
> to all be the same using the replace method of the date instance?
> Something like:
> 
> d1 = datetime.date(2004, 12, 2)
> d2 = datetime.date(2001, 12, 3)
> d3 = datetime.date(2002, 12, 6)
> d4 = datetime.date(1977, 12, 7)
> dates =[d1,d2,d3,d4]
> datesNorm = [obj.replace(year=1900) for obj in (dates)]
> datesNorm.sort()
> print datesNorm # etcetera

Or just use the .timetuple() method on datetime objects and sort on the 
8th element of the 9-element tuple, which is the day-of-the-year.

-Peter


From erinhouston at gmail.com  Mon May  9 12:50:55 2005
From: erinhouston at gmail.com (erinhouston at gmail.com)
Date: 9 May 2005 09:50:55 -0700
Subject: Outlook-MAPI
In-Reply-To: <mailman.186.1115610208.29826.python-list@python.org>
References: <mailman.186.1115610208.29826.python-list@python.org>
Message-ID: <1115657455.375205.319790@o13g2000cwo.googlegroups.com>

This code should help.

code
import win32com.client
olMailItem = 0x0
obj = win32com.client.Dispatch("Outlook.Application")
newMail = obj.CreateItem(olMailItem)
newMail.Subject = "This works"
newMail.Body = "It worked aging\n"
newMail.display()


V.C.Sekhar wrote:
> Hi there,
>
>             Can any one please help in getting me Python-Outlook
> programming issue clarified.
>
>
>
> I just wanted to do the following using Python:
>
> 1)Open a New Oulook Mail Window
>
> 2) Fill the field: to-email address and Write some body to it.(I
> DON't want to send it automatically)
>
>
>
> That's all. But, I am getting an error when I try to initiate the
> MAPI-Session using
>
>     object = win32com.client.Dispatch("Outlook.Application")
>
>     ns = object.GetNamespace("MAPI")
>
>     mapi = win32com.client.dynamic.Dispatch("MAPI.session")
>
>
>
> Error I see is :
>
>   File "C:\Program Files\GNU\WinCvs 2.0\Macros\TemplateCvsMacro.py",
> line 140, in SendMAPIMail
>
>     mapi = win32com.client.Dispatch("MAPI.session")
>
>   File "C:\Python24\Lib\site-packages\win32com\client\__init__.py",
> line 95, in Dispatch
>
>     dispatch, userName = dynamic._GetGoodDispatchAndUserName
> (dispatch,userName,clsctx)
>
>   File "C:\Python24\Lib\site-packages\win32com\client\dynamic.py",
> line 91, in _GetGoodDispatchAndUserName
>
>     return (_GetGoodDispatch(IDispatch, clsctx), userName)
>
>   File "C:\Python24\Lib\site-packages\win32com\client\dynamic.py",
> line 79, in _GetGoodDispatch
>
>     IDispatch = pythoncom.CoCreateInstance(IDispatch, None, clsctx,
> pythoncom.IID_IDispatch)
>
> pywintypes.com_error: (-2147221005, 'Invalid class string', None,
> None)
>
>
>
> Can any one please help me in this regard.
> 
>  
> 
> Thanks,
> 
> Sekhar



From siona at chiark.greenend.org.uk  Wed May 11 10:53:31 2005
From: siona at chiark.greenend.org.uk (Sion Arrowsmith)
Date: 11 May 2005 15:53:31 +0100 (BST)
Subject: Regarding Mail sending smtplib Module
References: <mailman.337.1115807919.29826.python-list@python.org>
Message-ID: <-Ks*ACiOq@news.chiark.greenend.org.uk>

praba kar  <prabapython at yahoo.co.in> wrote:
>Here I want to avoid this line "Received: from unknown
>(HELO prabahar.enmail.com)     (59.92.13.47)  by
>mailserver with SMTP; 11 May 2005 10:09:11 -0000 " How
>can I do this? . Why python give this line? . Mail
>sending Module in php will not give this type line.

To quote http://docs.python.org/lib/SMTP-objects.html :
"The SMTP[sic] does not modify the message headers in any way."
The Received: header is being added by your SMTP server. Goodness
knows how PHP avoids it -- direct use of sendmail maybe?

>Here I have another doubt Php mail sending module give
>MessageId automatically
>but python doesn't set that. why?

Because "The SMTP[sic] does not modify the message headers in
any way." Or, to look at it another way, there are obvious
advantages to having message ids created by the client app
rather than the library. (OTOH, the library author is more
likely to write better id-producing code than the average
client app author, but IMHO this is outweighed by the greater
utility of having the app do it and the consistency of not
having SMTP touch the headers.) If PHP mail adds a message id,
that would be consistent with it using sendmail rather than
talking directly to the SMTP server.

-- 
\S -- siona at chiark.greenend.org.uk -- http://www.chaos.org.uk/~sion/
  ___  |  "Frankly I have no feelings towards penguins one way or the other"
  \X/  |    -- Arthur C. Clarke
   her nu become? se bera eadward ofdun hl?ddre heafdes b?ce bump bump bump


From webmaster at smallco.com  Tue May 24 02:47:47 2005
From: webmaster at smallco.com (Webmaster)
Date: Tue, 24 May 2005 02:47:47 -0400 (EDT)
Subject: Automatic response to your mail (Error)
Message-ID: <m2407/13/04M47.5A3D317290@monty.bcentralhost.com>

The automatic reply to this e-mail which you should have
received in response to your e-mail to webmaster at smallco.com has not been defined.

Please contact postmaster at smallco.com for assistance.


From http  Wed May 11 01:56:39 2005
From: http (Paul Rubin)
Date: 10 May 2005 22:56:39 -0700
Subject: Python Args By Reference
References: <1115769308.136143.74080@f14g2000cwb.googlegroups.com>
	<1182j1daaepv6f4@corp.supernews.com>
	<1115787330.723188.295610@f14g2000cwb.googlegroups.com>
	<7xbr7igy12.fsf@ruckus.brouhaha.com>
	<1115790189.005940.158030@f14g2000cwb.googlegroups.com>
Message-ID: <7xr7gemhk8.fsf@ruckus.brouhaha.com>

"ncf" <nothingcanfulfill at gmail.com> writes:
> As I fail to see how an array could be used in this (my own
> stupidity?), would you have any such example? 

How's this (untested):

    state = [A,B,C,D,E,F,G,H]
    magic = [0x428A2F98, 0x71374491, 0xB5C0FBCF, 0xE9B5DBA5, 
             0x3956C25B, 0x59F111F1, 0x923F82A4, 0xAB1C5ED5, 0xD807AA98 ]

    def P(state, i, magic):
       a,b,c,d,e,f,g,h = state[i:] + state[:i]
       temp1 = h + S3(e) + F1(e,f,g) + K + x
       temp2 = S2(a) + F0(a,b,c)
       # d += temp1; h = temp1 + temp2
       state[(i+3)%8] += temp1; state[(i+7)%8] = temp1 + temp2

    for i in range(9):
       P(state, i, W, magic)

Actually this isn't so good.  You have to be careful about arithmetic
overflow, i.e. do all the additions mod 2**32, so you don't get Python
longs.  I'll leave that as an exercise.


From peter at engcorp.com  Thu May 26 07:42:01 2005
From: peter at engcorp.com (Peter Hansen)
Date: Thu, 26 May 2005 07:42:01 -0400
Subject: Problem in Building a Simple EXE
In-Reply-To: <mailman.95.1117035837.18027.python-list@python.org>
References: <mailman.95.1117035837.18027.python-list@python.org>
Message-ID: <a8ednexqDJeTKwjfRVn-qw@powergate.ca>

ParE wrote:
>    I wrote a small script which I have been trying to
> convert to an Executable.  I have tried py2exe and
> McMillians.  Both will convert it just fine but when I
> run it on a machine that does not have Python
> installed it will run the script twice. Any ideas on
> how I may fix this?

I think (unless someone else recognizes this problem) that you'll have 
to explain more about the situation.  What does "run twice" really mean? 
  How are you running it (command line, and icon, or what)?  Have you 
tried reducing your script down to the smallest version that still 
causes the undesirable behaviour?

For example, if you use the same techniques to compile, install, and run 
the following script, does it still "run twice" (whatever that means)?

if __name__ == '__main__':
     print "I'm running now."


-Peter


From mwm at mired.org  Thu May 19 16:40:38 2005
From: mwm at mired.org (Mike Meyer)
Date: Thu, 19 May 2005 15:40:38 -0500
Subject: Convert from numbers to letters
References: <1116511005.900715.107260@o13g2000cwo.googlegroups.com>
	<1116519193.037429.93560@o13g2000cwo.googlegroups.com>
	<1116529140.470352.129690@z14g2000cwz.googlegroups.com>
	<mailman.224.1116530388.8733.python-list@python.org>
Message-ID: <86wtpvymnt.fsf@guru.mired.org>

Bill Mill <bill.mill at gmail.com> writes:

> On 19 May 2005 11:59:00 -0700, rh0dium <sklass at pointcircle.com> wrote:
>> This is great but backwards...
>> 
>> Ok because you all want to know why..  I need to convert Excel columns
>> A2 into , [1,0] and I need a simple way to do that..
>> 
>> ( The way this works is A->0 and 2->1 -- Yes they interchange --  So
>> B14 == [13,1] )
>
> why didn't you say this in the first place?
>
> def coord2tuple(coord):
>     row, col = '', ''
>     alpha = 'abcdefghijklmnopqrstuvwxyz'.upper()
>     pairs = [''.join((x,y)) for x in alpha for y in [''] + [z for z in alpha]]
>     pairs = sorted(pairs, key=len)
>     coord = coord.upper()
>     for c in coord:
>         if c in alpha:
>             row += c
>         else:
>             col += c
>     return (int(col)-1, pairs.index(row))

That seems like the long way around. Python can search strings for
substrings, so why not use that? That gets the search loop into C
code, where it should be faster.

from string import uppercase

def coord2tuple2(coord):
    if len(coord) > 1 or uppercase.find(coord) < 0:
       raise ValueError('coord2tuple2 expected a single uppercase character, got "%s"' % coord)
    return uppercase.index(coord) + 1

Without the initial test, it has a buglet of return values for "AB"
and similar strings. If searching uppercase twice really bothers you,
you can drop the uppercase.find; then you'll get less informative
error messages if coord2tuple2 is passed single characters that aren't
in uppercase.

    <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From Sebastien.Boisgerault at gmail.com  Wed May 11 13:28:28 2005
From: Sebastien.Boisgerault at gmail.com (=?iso-8859-1?q?S=E9bastien_Boisg=E9rault?=)
Date: 11 May 2005 10:28:28 -0700
Subject: Importing modules
In-Reply-To: <1115816747.292060.292200@o13g2000cwo.googlegroups.com>
References: <1115816747.292060.292200@o13g2000cwo.googlegroups.com>
Message-ID: <1115832507.991053.55270@o13g2000cwo.googlegroups.com>


qwwee... at yahoo.it wrote:
[...]
> In some cases there is a further complication: module importing
through
> an indirect mechanism, like: exec "from " + xxx + " import *".

Don't do that. Please ;). If you need too import some modules based
on the module name, stored in a string, consider the using __import__
(http://www.python.org/doc/2.4/lib/built-in-funcs.html). It's a bit
tricky but you may define your own help functions on top of it.

> A part the fact that I have not understood the "real" difference
> between import and from ... import (or also from... import *),


>>> a = exp(1.0) # does not work

>>> import math
>>> e = math.exp(1.0)# works
>>> e = exp(1.0)     # does not work

>>> from math import exp
>>> e = exp(1.0) # works

>>> from math import *
>>> e = exp(1.0)  # works
>>> o = sqrt(1.0) # works too

> is it
> possible to re-build the application in only one chunck?
> This is only to better understand the application's structure, in
order
> to implement a flow chart tool.

uh ?



From philippe at philippecmartin.com  Sat May 28 17:07:07 2005
From: philippe at philippecmartin.com (Philippe C. Martin)
Date: Sat, 28 May 2005 21:07:07 GMT
Subject: Getting value of radiobutton trouble
References: <3fs17rF9b8edU1@news.dfncis.de>
Message-ID: <%35me.194$Dq7.159@newssvr11.news.prodigy.com>

Hi, 

I think your second call to Tk() does it: this works although the look is
different:


from Tkinter import *
class GetVariant:
     def __init__(self):
         self.root = Tk()
         self.mainframe = Frame(self.root,bg="yellow")
         self.mainframe.pack(fill=BOTH,expand=1)

         self.firstframe = Frame(self.mainframe,bg="red")
         self.firstframe.pack(side=BOTTOM,expand=1)

         global v
         v = StringVar()
         self.radiobutton = Radiobutton(self.firstframe,text= "Variant 
1", variable=v, value="Variant 1")
         self.radiobutton.pack(side=TOP,anchor=W)
         self.radiobutton.select()
         self.radiobutton = Radiobutton(self.firstframe,text= "Variant 
2", variable=v, value="Variant 2")
         self.radiobutton.pack(side=TOP,anchor=W)
         self.radiobutton = Radiobutton(self.firstframe,text= "Variant 
3", variable=v, value="Variant 3")
         self.radiobutton.pack(side=TOP,anchor=W)



         self.secondframe = Frame(self.mainframe,bg="blue")
         self.secondframe.pack()
         self.var = Button(self.secondframe,text="What 
Variant",command=self.call)
         self.var.pack(expand=1,side=BOTTOM)



     def call(self):
         self.variant = v.get()
         print 'Input => "%s"' % self.variant

class OneButton:
         def __init__(self):
             self.root = Tk()
             Button(self.root,text="click me",command=self.getvar).pack()
         def getvar(self):
             a=GetVariant()

d = OneButton()
d.root.mainloop()




VK wrote:

> Hi!
> What I'm missing in following code? Cannot get the values of
> radiobuttons. Starting only one class (GetVariant), it works. When I put
> two classes together, it doesn't.
> Regards, VK
> 
> from Tkinter import *
> class GetVariant:
>      def __init__(self):
>          self.root = Tk()
>          self.mainframe = Frame(self.root,bg="yellow")
>          self.mainframe.pack(fill=BOTH,expand=1)
> 
>          self.firstframe = Frame(self.mainframe,bg="red")
>          self.firstframe.pack(side=BOTTOM,expand=1)
> 
>          global v
>          v = StringVar()
>          self.radiobutton = Radiobutton(self.firstframe,text= "Variant
> 1", variable=v, value="Variant 1")
>          self.radiobutton.pack(side=TOP,anchor=W)
>          self.radiobutton.select()
>          self.radiobutton = Radiobutton(self.firstframe,text= "Variant
> 2", variable=v, value="Variant 2")
>          self.radiobutton.pack(side=TOP,anchor=W)
>          self.radiobutton = Radiobutton(self.firstframe,text= "Variant
> 3", variable=v, value="Variant 3")
>          self.radiobutton.pack(side=TOP,anchor=W)
> 
> 
> 
>          self.secondframe = Frame(self.mainframe,bg="blue")
>          self.secondframe.pack()
>          self.var = Button(self.secondframe,text="What
> Variant",command=self.call)
>          self.var.pack(expand=1,side=BOTTOM)
> 
> 
> 
>      def call(self):
>          self.variant = v.get()
>          print 'Input => "%s"' % self.variant
> 
> class OneButton:
>          def __init__(self):
>              self.root = Tk()
>              Button(self.root,text="click me",command=self.getvar).pack()
>          def getvar(self):
>              a=GetVariant()
> 
> d = OneButton()
> d.root.mainloop()



From fredrik at pythonware.com  Thu May 19 03:13:11 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 19 May 2005 09:13:11 +0200
Subject: ElementTree and xsi to xmlns conversion?
References: <d6gbo5$fm6$1@vegh.ks.cc.utah.edu>
Message-ID: <d6he8j$uat$1@sea.gmane.org>

Matthew Thorley wrote:
> Why does ElementTree.parse convert my xsi to an xmlns?

because it is a namespace prefix, perhaps?

> When I do this
> from elementtree import ElementTree
>
> # Sample xml
> mgac ="""
> <mgac xmlns="http://www.chpc.utah.edu/~baites/mgacML"
>      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
>      xsi:schemaLocation="http://www.chpc.utah.edu/~baites/mgacML
> http://www.chpc.utah.edu/~baites/mgacML/mgac.xsd"><cluster
> name="Si4H"></cluster></mgac>
> """
>
> xml = ElementTree.fromstring(mgac)
> ElementTree.tostring(xml)
>
> I get this
> '<ns0:mgac ns1:schemaLocation="http://www.chpc.utah.edu/~baites/mgacML
> http://www.chpc.utah.edu/~baites/mgacML/mgac.xsd"
> xmlns:ns0="http://www.chpc.utah.edu/~baites/mgacML"
> xmlns:ns1="http://www.w3.org/2001/XMLSchema-instance"><ns0:cluster
> name="Si4H" /></ns0:mgac>'
>
> The xsi is gone and has been replaced by a new xmlns, which is also NOT
> inherited by the child elements.

the xsi is a namespace prefix, which maps to a namespace URI.  the child element
doesn't use that namespace, so there's no need to add a namespace declaration.

> ElementTree.tostring(xml.getchildren()[0])
>
> '<ns0:cluster name="Si4H"
> xmlns:ns0="http://www.chpc.utah.edu/~baites/mgacML" />'
>
> If some one could please explain where I'm off I'd really appreciate it.
> I need to use xsi: to validate the document

are you sure?  the prefix shouldn't matter; it's the namespace URI that's important.
if you're writing code that depends on the namespace prefix rather than the name-
space URI, you're not using namespaces correctly.  when it comes to namespaces,
elementtree forces you to do things the right way:

    http://www.jclark.com/xml/xmlns.htm

(unfortunately, the XML schema authors didn't understand namespaces so they
messed things up:
    http://www.w3.org/2001/tag/doc/qnameids-2002-04-30
to work around this, see oren's message about how to control the namespace/prefix
mapping.  in worst case, you can manually insert xsi:-attributes in the tree, and rely on
the fact that the default writer only modifies universal names)

</F> 





From gduzan at bbn.com  Thu May 12 16:10:36 2005
From: gduzan at bbn.com (Gary D. Duzan)
Date: Thu, 12 May 2005 20:10:36 GMT
Subject: Python features
References: <1115536911.106882.166230@z14g2000cwz.googlegroups.com>
	<mailman.162.1115539371.29826.python-list@python.org>
	<op.sqofc51np2c5o9@hector.domek>
Message-ID: <0LOge.1436$bm5.654@newsread3.news.atl.earthlink.net>

In article <op.sqofc51np2c5o9 at hector.domek>,
Peter Dembinski <pdemb at gazeta.pl> wrote:
>
>
>On Sun, 08 May 2005 10:02:42 +0200, Andr?? Roberge  
><andre.roberge at gmail.com> wrote:
>
>> Imperative programming languages are the most commonly used languages.  
>> Examples of this type of language are C, C++, Ada, Fortran, Algol, Java,  
>> Python, Perl, and so on.
>
>How about lambda construction?  Isn't Python imperative language that
>includes some functional mixins?
>
>I mean -- can you say Python is fully imperative language?

   I don't know that "fully imperative" is necessarily meaningful.
We could say that Python supports statements which don't rebind a
variable to a value, but that doesn't seem helpful.  You can do
things without side effects in Python, and you can use things in
a functional style like map, but the overall language more closely
reflects an imperative style, so we call it an imperative language.

					Gary Duzan
					BBN Technologies




From pdemb at gazeta.pl  Mon May 23 08:09:27 2005
From: pdemb at gazeta.pl (Peter Dembinski)
Date: Mon, 23 May 2005 14:09:27 +0200
Subject: Access lotus notes using Python
References: <lWike.155$NV3.3324@news1.nokia.com>
Message-ID: <87r7fyywi0.fsf@hector.domek>

"Sateesh" <sateeshkavuri at yahoo.com> writes:

> Hi,
> Is it possible to access Lotus notes using Python? Can anyone
> provide me some pointers?

jython + LN Java bindings may be usable

-- 
http://www.peter.dembinski.prv.pl


From __peter__ at web.de  Wed May  4 17:04:37 2005
From: __peter__ at web.de (Peter Otten)
Date: Wed, 04 May 2005 23:04:37 +0200
Subject: How do you convert a string obj to a file obj?
References: <d5at2j$7uv$1@vegh.ks.cc.utah.edu>
	<42790d0c$0$79465$14726298@news.sunsite.dk>
	<d5b79u$agp$1@vegh.ks.cc.utah.edu>
	<d5b98a$vlo$01$1@news.t-online.com>
	<d5bbou$b7d$1@vegh.ks.cc.utah.edu>
Message-ID: <d5bdbv$bpp$05$1@news.t-online.com>

Matthew Thorley wrote:

> Ok you're right. tarfile.open expects a string; the path to the file
> open. I thought that I had tried it with open file objects but I guess I
> was mistaken.

tarfile.open()? That would have been important information in your initial
post. 

It would have been even better to just type help(tarfile.open) at the
interactive prompt (remember that next time). Reading the documentation for
you:

"""
open([name[, mode [, fileobj[, bufsize]]]])

...

If fileobj is specified, it is used as an alternative to a file object
opened for name.
"""

So try passing value.file as the third parameter.

Peter


From skip at pobox.com  Mon May  2 12:22:33 2005
From: skip at pobox.com (Skip Montanaro)
Date: Mon, 2 May 2005 11:22:33 -0500
Subject: How to kill a SocketServer?
In-Reply-To: <1115046280.413931.16970@g14g2000cwa.googlegroups.com>
References: <7xwtqj1lh1.fsf@ruckus.brouhaha.com>
	<mailman.83.1114972348.14961.python-list@python.org>
	<7xpswa4wfu.fsf@ruckus.brouhaha.com>
	<17013.25972.965219.254879@montanaro.dyndns.org>
	<mailman.5.1114997245.6583.python-list@python.org>
	<7xekcq75av.fsf@ruckus.brouhaha.com>
	<1115046280.413931.16970@g14g2000cwa.googlegroups.com>
Message-ID: <17014.21449.421677.445431@montanaro.dyndns.org>

    >> > set self.pause to something short-ish.  The select call times out
    >> > and the server exits.

    Guido> [Paul Rubin]
    >> Ah, good point.  Something like this should probably be added to
    >> SocketServer.py (optional timeout parameter to serve_forever), or at
    >> least the trick should be mentioned in the docs.

    Guido> I like this idea, and perhaps you all could come up with some
    Guido> more useful APIs in this area...

I stumbled on a somewhat cleaner way to do this using socket timeouts:

    class Server(SocketServer.ThreadingMixIn, SocketServer.TCPServer):
        pause = 0.25
        allow_reuse_address = True

        def __init__(self, server_address, RequestHandlerClass):
            SocketServer.TCPServer.__init__(self, server_address,
                                            RequestHandlerClass)
            self.socket.settimeout(self.pause)
            self.serving = 1
            ...

        def serve_forever(self):
            while self.serving:
                self.handle_request()

As far as my simple testing went (a trivial little xmlrpc server exposing
only "noop" and "exit" methods), the above worked fine.  I was mildly
surprised that I didn't have to catch socket.timeout exceptions.

Skip



From teamuhlig at gmail.com  Thu May 26 17:38:08 2005
From: teamuhlig at gmail.com (john67)
Date: 26 May 2005 14:38:08 -0700
Subject: Problem accessing Python Business Forum
Message-ID: <1117143488.353879.151600@g43g2000cwa.googlegroups.com>

Every time I attempt to look at the Python Business
Forum (www.python-in-business.org), I encounter an error that starts
like this:
  Site Error
  An error was encountered while publishing this resource.
  KeyError
  Sorry, a site error occurred.
  Traceback (innermost last):
  Module ZPublisher.Publish, line 150, in publish_module....

I thought it might be temporary, but I have encountered the same error
for a couple of weeks.  I know other parts of the Python Business Forum
site work since I have been sent links to the European PyCon 2005 for
example.

Is there another URL for the Python Business Forum that has a site map
or something similar?  I am guessing someone has had and been given an
answer to the problem I am having, but I have not been able to locate
it.  I did a search of this forum, but almost all references to "Python
Business Forum" were in Dr. Dobbs postings.

Thanks for your help,
John



From xah at xahlee.org  Sun May 15 12:30:19 2005
From: xah at xahlee.org (Xah Lee)
Date: 15 May 2005 09:30:19 -0700
Subject: Range function
In-Reply-To: <hdGdnZ2c1uWf0BrfRVn-gQ@powergate.ca>
References: <1115951576.138445.51080@z14g2000cwz.googlegroups.com>
	<1116150732.766217.258960@g47g2000cwa.googlegroups.com>
	<hdGdnZ2c1uWf0BrfRVn-gQ@powergate.ca>
Message-ID: <1116174619.859728.297260@g14g2000cwa.googlegroups.com>

the previous posted solutions are badly botched.

Here's a better solution. Any further correction will appear on the
website instead. (http://xahlee.org/tree/tree.html)

Similar change needs to be made for the Perl code... Java code will
come tomorror.

By the way, the code from me are not expected to be exemplary. These
are exercises for all, also as a intro to functional programing to
industry programers. Also, later on there will be non-trivial problems.

# -*- coding: utf-8 -*-
# Python

# http://xahlee.org/tree/tree.html
# Xah Lee, 2005-05

import math;

def Range(iMin, iMax=None, iStep=None):
  if (iMax==None and iStep==None):
    return Range(1,iMin)
  if iStep==None:
    return Range(iMin,iMax,1)
  if iMin <= iMax and iStep > 0:
    if (isinstance(iStep,int) or isinstance(iStep,long)):
      return range( iMin, iMax+1, iStep)
    else:
      result=[]
      for i in range(int(math.floor((iMax-iMin)/iStep))+1):
        result.append( iMin+i*iStep)
      return result
  if iMin >= iMax and iStep < 0:
    if (isinstance(iStep,int) or isinstance(iStep,long)):
      return range( iMin, iMax-1, iStep)
    else:
      result=[]
      for i in range(int(math.floor((iMin-iMax)/-iStep))+1):
        result.append( iMin+i*iStep)
      return result
  # raise error about bad argument. To be added later.

# test
print Range(5,-4,-2)

# Thanks to Peter Hansen for a correction.

 Xah
 xah at xahlee.org
? http://xahlee.org/



From peter at engcorp.com  Tue May 10 23:14:06 2005
From: peter at engcorp.com (Peter Hansen)
Date: Tue, 10 May 2005 23:14:06 -0400
Subject: Need a little parse help
In-Reply-To: <mailman.321.1115775576.29826.python-list@python.org>
References: <mailman.321.1115775576.29826.python-list@python.org>
Message-ID: <obGdnRflvfg95RzfRVn-3g@powergate.ca>

Delaney, Timothy C (Timothy) wrote:
> Peter Hansen wrote:
>>In my opinion, if the code fits on one screen and just reads stuff
>>from one file and, maybe, writes to another, you can safely and with
>                             ^^^^^^
>>clean conscience ignore Mike's advice (but remember it for later!).
> 
> Remember, finalisers are not called when Python exits. So if you don't
> explicitly close the file you are *writing* to, it may not be flushed
> before being closed (by the OS because the process no longer exists).

Ouch... I'd forgotten/never heard that I guess.  If that's true and all 
there is to the matter, I would think we'd all have encountered numerous 
times when our output files were not properly written.  Yet I've never 
encountered this situation myself, nor heard of anyone else ever having 
trouble as a result of it.  What gives?

-Peter


From jepler at unpythonic.net  Mon May 23 07:45:09 2005
From: jepler at unpythonic.net (Jeff Epler)
Date: Mon, 23 May 2005 06:45:09 -0500
Subject: Shift-JIS to UTF-8 conversion
In-Reply-To: <1116573375.686710.251250@g49g2000cwa.googlegroups.com>
References: <1116536705.864784.163540@o13g2000cwo.googlegroups.com>
	<mailman.233.1116544224.8733.python-list@python.org>
	<1116573375.686710.251250@g49g2000cwa.googlegroups.com>
Message-ID: <20050523114506.GE18155@unpythonic.net>

On Fri, May 20, 2005 at 12:16:15AM -0700, rbsharp at gmx.de wrote:
> Hello, I think the answer is basically correct but shift-jis is not a
> standard part of Python 2.3.

Ah, I was fooled --- I tested on Python 2.3, but my packager must have
included the codecs you went on to mention.

Jeff
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From m at m.com  Sun May  1 06:45:16 2005
From: m at m.com (monkey)
Date: Sun, 1 May 2005 18:45:16 +0800
Subject: wxPython: ansi or unicode?
References: <42749af0$1_3@rain.i-cable.com>
	<mailman.77.1114939444.14961.python-list@python.org>
Message-ID: <4274b338$1_3@rain.i-cable.com>

Many Thanks ( :

> > Hi all, which should be install? Really confused @@...
>
> Unicode.
>
> > Is that mean unicode version used for programming in language other than
> > English?
>
> No. The Unicode version allows the underlying wxWidgets GUI toolkit to
> use Unicode text. You want this.
>
> On certain platforms, older versions of the unicode version of wxPython
> were somewhat unstable. I believe this has been largely resolved, and
> the ANSI versions will be going away.
>
> I may have some details wrong. If you want an authoritative answer, ask
> on the wxPython lists.
>
> -- 
> Robert Kern
> rkern at ucsd.edu
>
> "In the fields of hell where the grass grows high
>   Are the graves of dreams allowed to die."
>    -- Richard Harter
>




From usenet at terabytemusic.cjb.net  Wed May 18 08:38:15 2005
From: usenet at terabytemusic.cjb.net (DJTB)
Date: Wed, 18 May 2005 14:38:15 +0200
Subject: processing a Very Large file
References: <mailman.114.1116358282.8733.python-list@python.org>
Message-ID: <118mdpnji58bvb6@corp.supernews.com>

Robert Brewer wrote:

> DJTB wrote:
>> I'm trying to manually parse a dataset stored in a file. The
>> data should be converted into Python objects.
>> 
> 
> The first question I would ask is: what are you doing with "result", and
> can the consumption of "result" be done iteratively?
> 
> 

The processed data in result is input data for a real-time simulator. The
simulator chooses the data it needs from 'result', this should be done
fast, so all data in 'result' should always be accessable in O(1) -- and as
fast as possible. That's why everything should be in RAM.

In other words: the data in 'result' is not being 'consumed' sequentially
and the data is not thrown away after 'consumption' by the simulator
process. Furthermore, after loading the file, 'result' is read-only.

By the way, 'result' is now a dict:


1. Read raw data from file
2. Process data (convert to Python Object, do some preprocessing)
4. Add mapping hash(path_tuple) --> Object to 'result' dictionary
5. Start simulation process: while True:
        a. given a hash, retrieve the Object from the dictionary 
        b. use the Object for further calculations



Jeffrey Maitland wrote:

>
> Well 1 thing I would do is use the for loop for the file itself.
> Now the thing is that you are reading a file into a list  now the more you
> add to the list the more memit will take (as you know). What I this is
> doing is a line by line read instead of opening the entire file and then
> reading it.  not sure if it is due to the fact that you are creating sets
> in addition to the list.  Something else that might help (not 100% sure if
> it will is using the del option on the sets after they are put into the
> list. That way it is no longer being used by memory then overwritten
> instead it frees the memory first. Not sure if any of this will help
> exactly but I hope it does.
>
> from time import time
> from sets import Set
> from string import split
> file_name = 'pathtable_ht.dat' #change the name to avoid confusion
> result = []
> start_time = time ()
> #Note there is no open(file_name,r) needed here.

What if the data file is gzipped?
(I'm now using gzip to keep the data file small, the added time is 
neglectable compared to the time needed for the actual processing)

> for line in file(file_name):
>         splitres = line.split()
>         tuple_size = int(splitres[0])+1
>         path_tuple = tuple(splitres[1:tuple_size])
>         conflicts = Set(map(int,splitres[tuple_size:-1]))
>         # do something with 'path_tuple' and 'conflicts'
>         # ... do some processing ...
>         result.append(( path_tuple, conflicts))
>         del(conflicts) # freeing the mem
>         del(tuple) # by deleting these 2 objects.
>

I'm not a Python memory specialist, but does del immediately release/free
the memory to the OS? I thought it was impossible to let Python immediately
release memory.


By the way, does anyone know if there's a profile-like module to keep track
of memory usage per object?

Thanks in advance,
Stan.



From brian at zope.com  Tue May 10 09:48:15 2005
From: brian at zope.com (Brian Lloyd)
Date: Tue, 10 May 2005 09:48:15 -0400
Subject: Announce: Python for .NET 1.0 RC1 released
Message-ID: <INENIOEOCHPHGHKLFLOLOEOIEEAA.brian@zope.com>

Hi all -

I'm happy to announce the release of Python for .NET 1.0 RC1.
You can download it from:

  http://www.zope.org/Members/Brian/PythonNet

Highlights of this release:

    - Implemented a workaround for the fact that exceptions cannot be
      new-style classes in the CPython interpreter. Managed exceptions
      can now be raised and caught naturally from Python

    - Implemented support for invoking methods with out and ref parameters.
      Because there is no real equivalent to these in Python, methods that
      have out or ref parameters will return a tuple. The tuple will contain
      the result of the method as its first item, followed by out parameter
      values in the order of their declaration in the method signature.

    - Fixed a refcount problem that caused a crash when CLR was imported in
      an existing installed Python interpreter.

    - Added an automatic conversion from Python strings to byte[]. This
makes
      it easier to pass byte[] data to managed methods (or set properties,
      etc.) as a Python string without having to write explicit conversion
      code. Also works for sbyte arrays. Note that byte and sbyte arrays
      returned from managed methods or obtained from properties or fields
      do *not* get converted to Python strings - they remain instances of
      Byte[] or SByte[].

    - Added conversion of generic Python sequences to object arrays when
      appropriate (thanks to Mackenzie Straight for the patch).

    - Added a bit of cautionary documentation for embedders, focused on
      correct handling of the Python global interpreter lock from managed
      code for code that calls into Python.

    - PyObject.FromManagedObject now correctly returns the Python None
      object if the input is a null reference. Also added a new
AsManagedObject
      method to PyObject, making it easier to convert a Python-wrapped
      managed object to the real managed object.

    - Created a simple installer for windows platforms.


All known bugs have also been fixed - thanks to all who have sent in issue
reports and patches for past releases.

At this point, the only thing I plan to do before a 1.0 final is fix any
new issues and add to the documentation (probably including a few specific
examples of embedding Python for .NET in a .NET application).

Enjoy! ;)


Brian Lloyd        brian at zope.com
V.P. Engineering   540.361.1716
Zope Corporation   http://www.zope.com



From timothy.williams at nvl.army.mil  Wed May 25 09:31:57 2005
From: timothy.williams at nvl.army.mil (timothy.williams at nvl.army.mil)
Date: 25 May 2005 06:31:57 -0700
Subject: changing build order for SWIG extensions
Message-ID: <1117027917.483536.25940@g49g2000cwa.googlegroups.com>

Hi all.


How do I tell distutils to run build_ext before build_py when I try to
do a

'python setup.py build' ?

I have a C extension using SWIG, and when I build with setup.py,
build_py runs on the current module.py file before swig
creates/recreates it. I got around it by just putting in another call
to setup for the py_module, but if I try to create a bdist, the second
call to setup  over writes the first w/o the _module.so file.

(bottom of setup.py)

# build extension module
setup (name = 'OTB_libs',
       version='1.0',
       author="Tim Williams",
       packages=['OTB_libs'],
       package_dir={'OTB_libs':''},
       ext_modules=[Extension('OTB_libs._OTB_libs',
                              sources=['OTB_libs.i'],
                              include_dirs=INCLDIRS,
                              library_dirs=LIBDIRS,
                              libraries=liblist,
                              extra_compile_args=['-malign-double'],
                              swig_opts=swig_opts
                              )
                    ]
       )

#this needs to be built after the extension is since OTB_libs.py is
#generated by SWIG
setup (name='OTB_libs',
       version='1.0',
       author="Tim Williams",
       py_modules=['OTB_libs.OTB_libs'],
       package_dir={'OTB_libs':''}
       )

Am I stuck with just calling running 'python setup.py build' twice?

Thanks for any help.



From aurora00 at gmail.com  Wed May 25 22:11:14 2005
From: aurora00 at gmail.com (aurora)
Date: Wed, 25 May 2005 19:11:14 -0700
Subject: Problem redirecting stdin on Windows
Message-ID: <op.src1o0py6yt6e7@news.cisco.com>

On Windows (XP) with win32 extension installed, a Python script can be  
launched from the command line directly since the .py extension is  
associated with python. However it fails if the stdin is piped or  
redirected.

Assume there is an echo.py that read from stdin and echo the input.



Launching from command line directly, this echos input from keyboard:

   echo.py



But it causes an error if the stdin is redirected

   echo.py <textfile


   ...
       for line in fp:
   IOError: [Errno 9] Bad file descriptor



However it works as expected if launched via Python.exe

   c:\Python24\python.exe echo.py <textfile



Why is the second option fails? It makes many script lot less functional.


From steven.bethard at gmail.com  Sat May 28 14:00:59 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Sat, 28 May 2005 12:00:59 -0600
Subject: a dict problem
In-Reply-To: <mailman.217.1117302664.18027.python-list@python.org>
References: <1117300484.637674.97430@f14g2000cwb.googlegroups.com>
	<mailman.217.1117302664.18027.python-list@python.org>
Message-ID: <_OidnR_p3_ZELAXfRVn-sQ@comcast.com>

Benji York wrote:
> I'll extrapolate from your message that you want to get the values of
> the dict in sorted order.  If so, here's how:
> 
>  >>> d = {'a': 1, 'b': 2, 'c':3}
>  >>> d
> {'a': 1, 'c': 3, 'b': 2}
>  >>> v = d.values()
>  >>> v
> [1, 3, 2]
>  >>> v.sort()
>  >>> v
> [1, 2, 3]

Or in Python 2.4:

py> d = {'a': 1, 'b': 2, 'c':3}
py> sorted(d.values())
[1, 2, 3]


From ivoras at fer.hr  Tue May  3 11:05:45 2005
From: ivoras at fer.hr (Ivan Voras)
Date: Tue, 03 May 2005 17:05:45 +0200
Subject: Py2Exe security
In-Reply-To: <117f3lk633rbs87@corp.supernews.com>
References: <1115121780.404491.84240@f14g2000cwb.googlegroups.com>
	<1115129613.564775.21660@g14g2000cwa.googlegroups.com>
	<117f3lk633rbs87@corp.supernews.com>
Message-ID: <d5841n$ocp$1@bagan.srce.hr>

Grant Edwards wrote:
> On 2005-05-03, mahasamatman <vladimir.n.ivanov at gmail.com> wrote:
>>password = pasword.decode("base64")
> 
> That will delay the attacker for a few minutes.

True, but a script kiddie that only knows about the 'strings' program 
will be forever baffled :)

Though deprecated, I think the enigma cipher (rotor) is still present in 
python - it could find its use in simple cases like this.



From foo at bar.org  Tue May 10 05:05:51 2005
From: foo at bar.org (stasz)
Date: Tue, 10 May 2005 11:05:51 +0200
Subject: Advice needed on __del__
References: <d5o1s1$8h3$1@sea.gmane.org> <d5obmp$cqh$1@sea.gmane.org>
	<mailman.232.1115672394.29826.python-list@python.org>
	<427ffa0d$1@nntp0.pdx.net>
	<mailman.245.1115689789.29826.python-list@python.org>
Message-ID: <pan.2005.05.10.09.05.51.546900@bar.org>

On Mon, 09 May 2005 22:49:06 -0300, Andr? Roberge wrote:

> Scott David Daniels wrote:
>> Andr? Roberge wrote:
>> 
>>>...  Each time I refresh the screen, I could
>>>force that call, then check to see if Evil has been
>>>destroyed by Python, which would give me the information
>>>I need to destroy Evil_twin behind the scene myself -
>>>which is what I am really after.
Wouldn't it be better if the robots draw themselfs onto the canvas?
That way you don't have to worry about deletion, a robot would only
draw itself when he's has to.
So perhaps it's an idea to delegate the drawing of stuff to the objects
themself rather then in the 'visibleworld' class.

> However (famous last words follow...) I feel it's not going to bite me
> this time.  The main reason is that, when Evil is gone, before the
> screen gets updated, lots of drawing calls and wxYield() calls are made,
> so that __del__ has lots of time to get called.
Your relying on something that *will* bite you, the question is rather
*when* will it bite you :-)

IMHO, the approach to rely on Python to do your dirty work and then
checks if it's done seems a bit VB to me :-)


Stas Zytkiewicz




From mwm at mired.org  Sat May  7 23:11:03 2005
From: mwm at mired.org (Mike Meyer)
Date: Sat, 07 May 2005 22:11:03 -0500
Subject: New Python regex Doc
References: <1113301533.054410.203710@z14g2000cwz.googlegroups.com>
	<mailman.1813.1113355346.1799.python-list@python.org>
	<1113856843.023012.165500@l41g2000cwc.googlegroups.com>
	<1113908069.264676.207090@g14g2000cwa.googlegroups.com>
	<1115328523.852744.110390@f14g2000cwb.googlegroups.com>
	<1115423751.016177.250650@o13g2000cwo.googlegroups.com>
	<1115444726.627426.172260@g14g2000cwa.googlegroups.com>
	<1115508491.462229.294020@o13g2000cwo.googlegroups.com>
Message-ID: <86hdhes988.fsf@guru.mired.org>

"Xah Lee" <xah at xahlee.org> writes:

> Let me expose one another fucking incompetent part of Python doc, in
> illustration of the Info Tech industry's masturbation and ignorant
> nature.

What you actually expose is your own ignorance.

> Note: ???In other words, the "|" operator is never greedy.???
>
> Note the need to inject the high-brow jargon ???greedy??? here as a
> latch on sentence.

Actually, greedy is a standard term when dealing with regular
expression matching. Anyone who's done even a little work with regular
expressions - which is pretty much all I've done, as I prefer to avoid
them - will know what it means.

> ???never greedy???? What is greedy anyway?
>
> ???Greedy???, when used in the context of computing, describes a
> certain characteristics of algorithms. When a algorithm for a
> minimizing/maximizing problem is such that, whenever it faced a choice
> it simply chose the shortest path, without considering whether that
> choice actually results in a optimal solution.

Except that's not the *only* meaning for greedy in a computing
context. That's what it means when you're talking about a specific
kind of problem solving algorithm. Those algorithms have *nothing* to
do with regular expressions, so this definition is irrelevant.

After doing a google for "regular expression greedy", the second match
starts with the text:

     By default, pattern matching is greedy, which means that the matcher
     returns the longest match possible.

Now, it can be argued that the term ought not to be used, except that
it's a standard term with a well-known meaning, and exactly describes
the behavior in question.

You can argue that it ought to be defined. The problem is, you can't
explain things to a rock. You have to assume some basic level of
understanding. In particular, documentation on a regular expression
package should explain *how to use the package*, not what regular
expressions are, and the terminology associated with them.

As I've suggested before, what's really needed is a short tutorial on
regular expressions in general. That page could include a definition
of terms that are unique to regular expressions, and the re package
documentation could link the word greedy to that definition.

          <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From cal_2pac at yahoo.com  Thu May 19 17:16:45 2005
From: cal_2pac at yahoo.com (cal_2pac at yahoo.com)
Date: 19 May 2005 14:16:45 -0700
Subject: How to receive events (eg. user mouse clicks) from IE
In-Reply-To: <428cf5a9$1_1@spool9-west.superfeed.net>
References: <1116476411.853695.235670@g14g2000cwa.googlegroups.com>
	<428c3cbe$1_1@spool9-west.superfeed.net>
	<1116529345.146032.91880@f14g2000cwb.googlegroups.com>
	<428cf5a9$1_1@spool9-west.superfeed.net>
Message-ID: <1116537405.495521.252570@f14g2000cwb.googlegroups.com>

Thanks for your prompt responses and the code.
However, when I run the code I get com error
 d=win32com.client.DispatchWithEvents(ie.Document, Doc_Events)
  File "C:\Python23\lib\site-packages\win32com\client\__init__.py",
line 199, in __getattr__
    return getattr(self._obj_, attr)
  File "C:\Python23\lib\site-packages\win32com\client\__init__.py",
line 455, in __getattr__
    return self._ApplyTypes_(*args)
  File "C:\Python23\lib\site-packages\win32com\client\__init__.py",
line 446, in _ApplyTypes_
    return self._get_good_object_(
com_error: (-2147352567, 'Exception occurred.', (0, None, None, None,
0, -2147467259), None)

I am a newbie to python(started coding a few months ago).
This appears to be a fairly common error when COM objects are not
hooked up properly. Though I have not been able to find a solution or
the reason for this.
Thanks again for the explanation.All the information that I had
acquired now seems to fall into place. I was not aware about
doc_mod.HTMLAnchorEvents. Where can I find more documentation about
this?

Roger Upole wrote:
> Here's a few more lines that hook the document's onactivate event.
>
> import win32com.client
>
>
ie_mod=win32com.client.gencache.EnsureModule('{EAB22AC0-30C1-11CF-A7EB-0000C05BAE0B}'

> ,0, 1, 1)
>
doc_mod=win32com.client.gencache.EnsureModule('{3050F1C5-98B5-11CF-BB82-00AA00BDCE0B}'

> ,0 ,4, 0)
> class IE_Events(ie_mod.DWebBrowserEvents2):
>     def OnNavigateComplete2(self, pDisp, URL):
>         print 'OnNavigateComplete2:', URL
>
> class Doc_Events(doc_mod.HTMLAnchorEvents):
>     def Ononactivate(self):
>         print 'onactivate', self.activeElement.outerHTML
>
>
ie=win32com.client.DispatchWithEvents('InternetExplorer.Application',IE_Events)
> ie.Visible=1
> ie.Navigate('http://www.google.com')
>
> d=win32com.client.DispatchWithEvents(ie.Document, Doc_Events)
>
>     Roger
>
>
> <cal_2pac at yahoo.com> wrote in message
> news:1116529345.146032.91880 at f14g2000cwb.googlegroups.com...
> > Hi
> > Thanks for the response and for the code.
> > However, I want to trap events like mouse click on the HTML
document
> > loaded by the web browser control. The code mentioned below
provides
> > events from the web browser control. I need to find out on which
> > particular HTML tag did the user click for example.
> > How do I find that out? There should be some way to refer to a
document
> > from a given web browser control and start receiving events from it
> >
> >
> > Roger Upole wrote:
> >> The two you'll need to run makepy for are Microsoft Internet
Controls
> > and
> >> Microsoft HTML object Library.  If you run them manually, you
should
> > be
> >> able to look at the generated code to get the guids.
> >> Here's a minimal example:
> >>
> >> import win32com.client
> >>
> >>
> >
ie_mod=win32com.client.gencache.EnsureModule('{EAB22AC0-30C1-11CF-A7EB-0000C05BAE0B}',0,
> >
> >> 1, 1)
> >> class IE_Events(ie_mod.DWebBrowserEvents2):
> >>     def OnNavigateComplete2(self, pDisp, URL):
> >>         print 'OnNavigateComplete2:', URL
> >>
> >>
> >
ie=win32com.client.DispatchWithEvents('InternetExplorer.Application',IE_Events)
> >> ie.Visible=1
> >> ie.Navigate('http://www.google.com')
> >>
> >>    hth
> >>       Roger
> >>
> >>
> >> <cal_2pac at yahoo.com> wrote in message
> >> news:1116476411.853695.235670 at g14g2000cwa.googlegroups.com...
> >> >I am trying to trap events from internet explorer eg. when user
> > clicks
> >> > on an html link - I need to get notified for that event.
> >> >
> >> > After looking through the newgroups / internet and reading
through
> >> > various sections in programming python on win32 - I understand
that
> >> > this can be done using DispatchWithEvents.
> >> > I have also referred to discussions on comp.lang.python
> >> >
> >
http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/a3c502d06412a5f8/0ee3083e71316da7?q=dispatchwithevents&rnum=43#0ee3083e71316da7
> >> >
> >> > and
> >> >
> >> >
> >
http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/1da0668794851296/5bcec1fda216c598?q=dispatchwithevents&rnum=19#5bcec1fda216c598
> >> >
> >> > So far - none of the newgroups postings report that IE events
were
> >> > trapped successfully (at least I could not find any). However,
> > there is
> >> > enough evidence that it can be done.
> >> > My problems at the moment:
> >> > a) The examples use early binding. However, I cannot get Python
> > makepy
> >> > to generate the code to force makepy process at run time - since
> > COM
> >> > makepy utility that I invoke from python win 32 does not have
any
> > entry
> >> > for internet explorer.
> >> > I tried to find the CLSID for IE
> > 3050F613-98B5-11CF-BB82-00AA00BDCE0B
> >> > but I get an exception
> >> > b) Also one of the examples suggest that following code should
work
> >> >
> >> >> mod = EnsureModule(...)
> >> >
> >> >> class MyEvents(mod.IDocumentEvents):
> >> >>    # your methods here....
> >> >
> >> >> handler = MyEvents(ie.document)
> >> >
> >> >> # handler should start recieving events.
> >> >
> >> > however, what CLSID is to be used in EnsureModule... . I tried
with
> > a
> >> > few but I always get the error 'NoneType' object has no
attribute
> >> > 'IDocumentEvents'
> >> >
> >> >
> >> > An example that 'works' will be very useful
> >> >
> >>
> >>
> >>
> >> ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure
Usenet
> > News==----
> >> http://www.newsfeeds.com The #1 Newsgroup Service in the World!
> > 120,000+ Newsgroups
> >> ----= East and West-Coast Server Farms - Total Privacy via
Encryption
> > =----
> >
>
>
>
>
> ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet
News==----
> http://www.newsfeeds.com The #1 Newsgroup Service in the World!
>100,000 Newsgroups
> ---= East/West-Coast Server Farms - Total Privacy via Encryption =---



From sjmachin at lexicon.net  Wed May 11 20:23:44 2005
From: sjmachin at lexicon.net (John Machin)
Date: Thu, 12 May 2005 10:23:44 +1000
Subject: Problems with csv module
References: <d5sngn$l4$03$1@news.t-online.com>
	<mailman.338.1115809896.29826.python-list@python.org>
	<d5spph$ktm$01$1@news.t-online.com>
	<a4r381p3s5uhud58tvd2m2nod1ebmo48u0@4ax.com>
	<d5tc55$q3e$1@sea.gmane.org>
	<17026.15830.303909.792010@montanaro.dyndns.org>
	<d5tgtc$aur$1@sea.gmane.org>
	<mailman.391.1115838395.29826.python-list@python.org>
Message-ID: <hb65815kier8mohb5cedquhjvpmv4iivgd@4ax.com>

On Wed, 11 May 2005 14:08:08 -0500, Skip Montanaro <skip at pobox.com>
wrote:

>
>    >> Based on the requests I've seen here and on the csv at mojam.com mailing
>    >> list, it appears people are certainly generating CSV files which
>    >> contain Unicode- encoded data.
>
>    Fredrik> in what encodings?
>
>I've seen hints about iso-8859-1/iso-8859-15 and mention that Excel 2000
>supports utf-8.

I have Excel 2002 and have done some experimentation. It "supports"
utf-8 only to the extent that most times it doesn't mangle the data
(i.e. you can save it again without loss); you just can't make any
sense out of what's on the screen. Specifically:

open a file with CSV extension: Excel assumes blindly that it's
encoded according to your locale (e.g. cp1252).

open a file with TXT extension: Excel gives you the option of
specifying which one of a large number of *legacy* encodings -- yes,
that's correct,  utf-* are not on the list!

NOTE: the above applies even if you have a utf-8-encoded BOM at the
start of the file.

This behaviour appears to be Excel-specific; MS Word, Wordpad and even
the humble Notepad recognise the utf-8-encoded BOM and display
sensibly (with a Unicode font, of course).


>  Whether Excel can dump csv files in utf-8 or not, I don't
>know, though I'd suppose so.

Unfortunately, your supposition is incorrect. There is no way of
specifying the encoding directly. The nearest available options are:

(1) csv : encoded in your locale-specific legacy encoding. "illegal"
characters are silently replaced by "?" on Windows and (I deduce)
underscore on a Macintosh.
(2) text : ditto
(3) Unicode text: utf-16 -- it *does* subsequently open these
correctly i.e. silently detects the encoding and displays properly.






From fraca7 at free.fr  Wed May 25 09:34:59 2005
From: fraca7 at free.fr (fraca7)
Date: Wed, 25 May 2005 15:34:59 +0200
Subject: Linuz Python Module using PythonC/ API
In-Reply-To: <mailman.69.1116962672.18027.python-list@python.org>
References: <mailman.69.1116962672.18027.python-list@python.org>
Message-ID: <42947f02$0$6549$626a14ce@news.free.fr>

David a ?crit :

> [snip]

> CC=g++

So actually your 'initutm' is '_Z7initutmv' for the linker. Try building 
with gcc instead, or declaring

extern "C" PyMODINIT_FUNC initutm(void);

or something like that.


From fredrik at pythonware.com  Thu May  5 13:48:02 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 5 May 2005 19:48:02 +0200
Subject: Does the Python/C interface support Queue objects?
References: <1115309235.972498.155650@f14g2000cwb.googlegroups.com>
Message-ID: <d5dltj$sec$1@sea.gmane.org>

"scott.manton at gmail.com" wrote:

> A little background.  I made a C dll that sets up a thread for
> collecting data from an NI data aquisition card.  The thread builds a
> list and passes the list to to python via a callback, then python puts
> them in the Queue.   I would prefer to put the data in the Queue from
> the C thread for efficiency,  and then monitor the Queue from python.

the Queue type is implemented in Python, so you won't gain much by
skipping the callback.

but if you insist, you can use the abstract API to manipulate the queue
object:

    http://docs.python.org/api/object.html

    res = PyObject_CallMethod(queue, "put", "O", object);
    ... check error status ...
    Py_DECREF(res);

</F>





From mahs at telcopartners.com  Tue May  3 16:12:46 2005
From: mahs at telcopartners.com (Michael Spencer)
Date: Tue, 03 May 2005 13:12:46 -0700
Subject: Sequences in list
In-Reply-To: <1115146849.029539.85310@o13g2000cwo.googlegroups.com>
References: <1115063524.407859.273070@o13g2000cwo.googlegroups.com>	<d56519$qem$1@sea.gmane.org>	<mailman.52.1115069676.6583.python-list@python.org>
	<1115146849.029539.85310@o13g2000cwo.googlegroups.com>
Message-ID: <d58lib$8ct$2@sea.gmane.org>

temp at mclift.fsnet.co.uk wrote:
> Hi Michael,
> 
> Thanks for a quick response, I appreciate it. I will have to get back
> to you tomorrow, as I can't check what you've given me right now. I
> presume the fact that you mention the word note in your code you have
> realised that I'm trying to search for musical sequences. 

Yes, I thought that was the most likely application

I tried to
> put my problem across in the way I did, not mentioning music, so as not
> to confuse the matter. So simply put, I'm checking a list for musical
> sequences, without having any idea as to how they might be formed.
> 

What I put together does not yet address the general problem.  In particular, it 
looks only at groups that start at positions that are an integral multiple of 
their length i.e., 3-tuples starting only at 0,3,6,9...  If you really want to 
look for repetition of any sequence anywhere, then you would need a small 
modification to the make_groups function:

def make_groups(sequence, n, anywhere = False):
     """return groups of length n from sequence.

     bool: anywhere
       False: look only at positions n*i for i = 1,2,3...
       True: return every (overlapping sequence) of length n

     Usage:
      >>> list(make_groups(s1,3))
     [['a', 'b', 'c'], ['b', 'c', 'd'], ['c', 'd', 'e']]
      >>> list(make_groups(s1,3,anywhere = True))
      [['a', 'b', 'c'], ['b', 'c', 'b'], ['c', 'b', 'c'], ['b', 'c', 'd'],
      ['c', 'd', 'c'], ['d', 'c', 'd'], ['c', 'd', 'e']]
      >>>
     """
     length = len(sequence)
     if (length % n) and not anywhere:
         raise ValueError, "Sequence length %s is not multiple of %s"\
                             % (length, n)
     for i in xrange(0, length-n+1, anywhere or n):
         yield sequence[i:i+n]

and a corresponding tweak to the compare_forms:

def compare_forms(sequence, anywhere = False):
     """test whether all groups of a sequence have the same form"""
     for length in (4,3,2): # look for longest match first
         forms = {}
         try:
             for group in make_diffs(make_groups(sequence, length, anywhere)):
                 forms[group] = forms.get(group,0)+1
             print forms
         except ValueError:
             # raised if the sequence is not a multiple of length
             pass

  >>> compare_forms(s1, anywhere = True)
  {(0, 6, 0, 1): 2, (0, 1, 2, 1): 2, (0, 1, 0, 1): 2}
  {(0, 1, 2): 3, (0, 1, 0): 2, (0, 6, 0): 2}
  {(0, 1): 6, (0, 6): 2}
  >>>


Other questions - are your search sequences really limited to 4 notes?  How long 
are the pieces you are searching?  Do you not need to care about note lengths, 
only pitches.  Are you really (as I inferred from your examples) looking only at 
a 7-tone scale etc... etc...  Anyway, I'd be happy to discuss this on-list or off.

Michael





From lambacck at gmail.com  Thu May 26 23:58:12 2005
From: lambacck at gmail.com (Chris Lambacher)
Date: Thu, 26 May 2005 23:58:12 -0400
Subject: dirrection for simple record keeping app.
In-Reply-To: <1117154519.350682.59340@z14g2000cwz.googlegroups.com>
References: <1117154519.350682.59340@z14g2000cwz.googlegroups.com>
Message-ID: <af37e9c50505262058302626f1@mail.gmail.com>

As much as I hate to suggest anything Microsoft, you would probably
save yourself a lot of work by using MS Access.  That is what it is
designed for.

That said mySQL is probably a bit of a sledgehammer solution to the
problem.  If you want a database, you might want to look at SQLite. 
Is is pretty lightweight has python bindings and runs out of a file.

pyGTK is one good option.  wxWidgets is another.  pyGTK tends to be a
bit more unix centric while wxWidgets is more Windows centric.  pyGTK
is nicer to program in, but wxWidgets will give you more of what you
need.  Printing in Windows is hard (one of the advantages of MS Access
is that it will take care of that for you) but  wxWidgets apparently
has a printing framework that you could use.

Of course if you are already familliar with HTML and javascript, CGI
route is a good one.  It is easy to get a decent user interface set up
pretty quickly with CGI and printing is taken care of by the browser. 
Multiuser is taken care of almost automatically.  The main
disadvantage is you need a web server and a connection to the web
server whenever you want to use your system.

That should get you going,
-Chris

On 26 May 2005 17:41:59 -0700, nephish <cotyspend at yahoo.com> wrote:
> Hey there,
> i have been spending some time learning python. i do enjoy it so.
> Heres the deal. i need some dirrection advice.
> i have a friend that wants me to set up a customer database for him.
> Easy stuff like name, phone number, email address. and current status.
> he also wants to be able to print this stuff out.
> Heres the deal. He runs windows xp.
> how could i write something to help him out ? i thought of glade, since
> its gtk and gtk can use a windows runtime.... i also thought of making
> something web-based and doing this with cgi scripts. but what would be
> easier to learn.... using a database like mysql, or writing text files
> and reading them to retrieve the info. The scripting itself could just
> be a simple dictionary... so........
> any suggestions?
> thanks
> 
> --
> http://mail.python.org/mailman/listinfo/python-list
> 


-- 
Christopher Lambacher
lambacck at computer.org


From gigi-s at bigfoot.com  Tue May 31 03:46:01 2005
From: gigi-s at bigfoot.com (Gigi)
Date: Tue, 31 May 2005 00:46:01 -0700
Subject: __getattribute__ and __getattr__
In-Reply-To: <d7dpam$jal$1@sea.gmane.org>
References: <d7dgd4$29v$1@sea.gmane.org> <d7dpam$jal$1@sea.gmane.org>
Message-ID: <429C1639.9050204@bigfoot.com>

Terry Reedy wrote:
> "Gigi" <gigi-s at bigfoot.com> wrote in message 
> news:d7dgd4$29v$1 at sea.gmane.org...
> 
>>Hi,
>>In the Python documentation regarding __getattribute__ (more attribute
>>access for new style classes) it is mentioned that if __getattribute__
>>is defined __getattr__ will never be called (unless called explicitely).
>>Here is the exact citation:
> 
> 
> Discrepancy reported in
> 
> https://sourceforge.net/tracker/?func=detail&atid=105470&aid=1204734&group_id=5470
> 
> Guido declared behavior right and doc wrong and in need of correction.
> 
> Terry J. Reedy
> 
> 
> 

Thanks for your reply. It definitely clears the issue. I'm writing an
article to Dr. Dobbs about the Python object model and I wouldn't want
to be inaccurate. I fill a little like Leibnitz :-) . It's a curious
coincidence that two separate people notice the same documentation issue
that lingere for such a long time in such a short time span.

Thanks, Gigi





From ville at spammers.com  Mon May 16 14:02:04 2005
From: ville at spammers.com (Ville Vainio)
Date: 16 May 2005 21:02:04 +0300
Subject: python-dev Summary for 2005-04-16 through 2005-04-30
References: <mailman.13.1116201983.8733.python-list@python.org>
	<1116258692.305537.244260@g49g2000cwa.googlegroups.com>
Message-ID: <du77jhznj6r.fsf@lehtori.cc.tut.fi>

>>>>> "Kay" == Kay Schluehr <kay.schluehr at gmx.net> writes:

    Kay> but PEP 340 is already withdrawn by the BDFL. [1]

    Kay> There won't be any Ruby-like blocks because they hide control
    Kay> flow.

Bummer. I would have greatly enjoyed seeing the only real reason for
choosing Ruby over Python blown away...

-- 
Ville Vainio   http://tinyurl.com/2prnb


From qwweeeit at yahoo.it  Sun May 15 05:11:31 2005
From: qwweeeit at yahoo.it (qwweeeit at yahoo.it)
Date: 15 May 2005 02:11:31 -0700
Subject: Modifying a built-in function for logging purposes
In-Reply-To: <mailman.3.1116123576.15315.python-list@python.org>
References: <1116098593.970438.219860@g47g2000cwa.googlegroups.com>
	<Lcthe.1234$Ri4.1175@newsread1.news.pas.earthlink.net>
	<1116108841.429602.257380@o13g2000cwo.googlegroups.com>
	<mailman.3.1116123576.15315.python-list@python.org>
Message-ID: <1116148291.604227.318090@g44g2000cwa.googlegroups.com>

Hi Robert,
> Short answer: if you don't know stuff like this, then you probably
> shouldn't mess around with the builtins in production code.
I begin to be fed up of beeing treated as a child who is only able to
make damages...
But this time you are right...
So let's change point of view: instead of trying to modify built-in
functions, it is better to write a small wrapper of the application you
want to log.
For example:
# app_wrapper.py
...insert here the excellent routine of Fredrik Lundh (thank you
Fredrik for your contribution!)
import app    #name of the application to be logged.
In the test I carried on the answer was:
OPEN ('pippo2',) FROM ? IN /home/qwweeeit/app.py
OPEN ('pippo3', 'w') FROM ? IN /home/qwweeeit/app.py
OPEN ('pippolong', 'w') FROM ? IN /home/qwweeeit/app.py
I have not tested yet if multi-module applications answer in terms of
modules.
I must thank also Bengt Richter, also if his suggestion is far too
complicate for me...
Concerning his second replay and the virtualization of file system
access (or the usage of an external tool as suggested by Fredrik), I
leave the matter to the experts.
Bye.



From kraus at hagen-partner.de  Fri May 27 08:08:23 2005
From: kraus at hagen-partner.de (Wolfram Kraus)
Date: Fri, 27 May 2005 14:08:23 +0200
Subject: Strings for a newbie
In-Reply-To: <d7726f$fdg$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
References: <d7726f$fdg$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
Message-ID: <d772iu$por$1@ork-un.noris.net>

Malcolm Wooden wrote:
> I'm trying to get my head around Python but seem to be failing miserably. I 
> use RealBasic on a Mac and find it an absolute dream! But Python....UGH!
> 
> I want to put a sentence of words into an array, eg "This is a sentence of 
> words"
> 
> In RB it would be simple:
> 
> Dim s as string
> Dim a(-1) as string
> Dim i as integer
> 
> s = "This is a sentence of words"
> For i = 1 to CountFields(s," ")
>   a.append NthField(s," ",i)
> next
> 
> That's it an array a() containing the words of the sentence.
> 
> Now can I see how this is done in Python? - nope!
> 
> UGH!
> 
> Malcolm
> (a disillusioned Python newbie) 
> 
> 
Use split:

 >>> s = "This is a sentence of words"
 >>> s.split()
['This', 'is', 'a', 'sentence', 'of', 'words']

See:
http://www.python.org/doc/2.4.1/lib/string-methods.html#l2h-202

HTH,
Wolfram


From newsgroups at jhrothjr.com  Sat May  7 10:13:56 2005
From: newsgroups at jhrothjr.com (John Roth)
Date: Sat, 7 May 2005 08:13:56 -0600
Subject: hard memory limits
References: <d5f9jl$k6d$1@domitilla.aioe.org>
Message-ID: <117pj97ffm7ja93@news.supernews.com>

"Maurice LING" <mauriceling at acm.org> wrote in message 
news:d5f9jl$k6d$1 at domitilla.aioe.org...
> Hi,
>
> I think I've hit a system limit in python when I try to construct a list 
> of 200,000 elements. My error is
>
> malloc: vm_allocate (size = 2400256) failed......
>
> Just wondering is this specific to my system or what? Will adding more RAM 
> helps in this case?
>
> Thanks and cheers
> Maurice

malloc (which is the memory manager Python uses when it
runs out of its own heap memory) is trying to get another
2.4 megabyte block of memory from the operating system
so it can expand the heap.

The operating system is refusing to fill the request. There are
a lot of reasons why this might happen, ranging from system
limits (too little swap space, too little real memory), to an
inability to find a 2.4 meg block in the user part of the
address space, etc.

I'd check swap space, and then balance redesigning the
application to not try to get large blocks of memory with
spending money on more hardware memory that might not
solve the problem.

John Roth






From loicderoyand at yahoo.fr  Sun May  8 06:29:13 2005
From: loicderoyand at yahoo.fr (LDD)
Date: 8 May 2005 03:29:13 -0700
Subject: Newbie : checking semantics
In-Reply-To: <pan.2005.05.07.22.49.38.289634@jerf.org>
References: <1115503520.392357.230620@f14g2000cwb.googlegroups.com>
	<pan.2005.05.07.22.49.38.289634@jerf.org>
Message-ID: <1115548153.565703.314360@z14g2000cwz.googlegroups.com>

>To win this point, you need to produce evidence that doesn't exist.

I was not trying to win any point when I put my naive question on this
forum.
I'm just learning Python and trying to know what it is best made for.

So far I've learnt that Python is lazy about tyche-checking, it is
dynamic by nature and that there are areas which those qualities are
well fit for.

Still, I'm happy to learn that pychecker exists and helps you find
spelling mistakes that otherwise you would have found at execution time



From gsakkis at rutgers.edu  Mon May 16 21:46:59 2005
From: gsakkis at rutgers.edu (George Sakkis)
Date: 16 May 2005 18:46:59 -0700
Subject: Parsing text into dates?
References: <1116277171.492587.38080@g47g2000cwa.googlegroups.com>
	<1116291091.292107.196730@g49g2000cwa.googlegroups.com>
	<hmgi81tq8dnl6gci3aqhfaqke591as8c31@4ax.com>
Message-ID: <1116294419.850290.11740@o13g2000cwo.googlegroups.com>

"John Machin" <sjmachin at lexicon.net> wrote:

> On 16 May 2005 17:51:31 -0700, "George Sakkis" <gsakkis at rutgers.edu>
> wrote:
>
>
> >#=======================================================
> >
> >def parseDateTime(string, USA=False, implyCurrentDate=False,
> >                  yearHeuristic=_20thcenturyHeuristic):
> >    '''Tries to parse a string as a valid date and/or time.
> >
> >    It recognizes most common (and less common) date and time
formats.
>
> Impressive!
>
>
> >
> >    Examples:
> [snip]
> >        >>> str(parseDateTime('15.6.2001'))
> >        '2001-06-15'
> >        >>> str(parseDateTime('6.15.2001'))
> >        '2001-06-15'
>
> A dangerous heuristic -- 6.12.2001 (meaning 2001-12-06) can be easily
> typoed into 6.13.2001 or 6.15.2001 on the numeric keypad.

Sure, but how is this different from a typo of 2001-12-07 instead of
2001-12-06 ? There's no way you can catch all typos anyway by parsing
alone. Besides, 6.15.2001 is to be interpreted as 2001-06-15 in US
format. Currently the 'USA' flag is used only for ambiguous dates, but
that's easy to change to apply to all dates. Essentially you would gain
a little extra safety at the expense of a little lost recall over the
set of parseable dates.

George



From garabik-news-2005-05 at kassiopeia.juls.savba.sk  Fri May 27 11:21:11 2005
From: garabik-news-2005-05 at kassiopeia.juls.savba.sk (garabik-news-2005-05 at kassiopeia.juls.savba.sk)
Date: Fri, 27 May 2005 15:21:11 +0000 (UTC)
Subject: cpu usage limit
References: <1117206216.695085.282510@g44g2000cwa.googlegroups.com>
	<d77d4c$21a$1@solaris.cc.vt.edu>
Message-ID: <d77dt7$2lqn$1@ns.felk.cvut.cz>

rbt <rbt at athop1.ath.vt.edu> wrote:
> 
> mf wrote:
>> Hi.
>> 
>> My problem:
>> How can I make sure that a Python process does not use more that 30% of
>> the CPU at any time. I only want that the process never uses more, but
>> I don't want the process being killed when it reaches the limit (like
>> it can be done with resource module).
>> 
>> Can you help me?
>> 
>> Thanks in advance.
>> 
>> Best regards,
>> Markus
>> 
> 
> Are you looping during a cpu intensive task? If so, make it sleep a bit 
> like this:
> 
> for x in cpu_task:
>     time.sleep(0.5)
>     do(x)

or like this (untested!)

finished = False
while not finished:
  before = time.time()
  do(x) # sets finished if all was computed
  after = time.time()
  delta = after-before
  time.sleep(delta*10/3.)

now the trick: do(x) can be a single piece of code, with strategically placed yield's
all over....



-- 
 -----------------------------------------------------------
| Radovan Garab?k http://kassiopeia.juls.savba.sk/~garabik/ |
| __..--^^^--..__    garabik @ kassiopeia.juls.savba.sk     |
 -----------------------------------------------------------
Antivirus alert: file .signature infected by signature virus.
Hi! I'm a signature virus! Copy me into your signature file to help me spread!


From doodle4 at gmail.com  Fri May 20 16:01:11 2005
From: doodle4 at gmail.com (ashtonn@gmail.com)
Date: 20 May 2005 13:01:11 -0700
Subject: buffer_info error
Message-ID: <1116619271.294467.51400@g44g2000cwa.googlegroups.com>

Hello,

buffer_info is giving the following error:

AttributeError: 'str' object has not attribute 'buffer_info'

Here's the code snippet...

dest = 'FFFFFFFFFFFF'
src =  '0123FFFFFFFF'

data = array('B', '\0' * 256)
data1 = ''.join([dest, src]
print data1
>>FFFFFFFFFFFF0123FFFFFFFF
print data.buffer_info()[0]... works

print data1.buffer_info()[0]....error

This output is a string and hence i believe i get the above error. Any
ideas?


Thanks,
-Ashton



From anthra.norell at tiscalinet.ch  Tue May 24 04:16:15 2005
From: anthra.norell at tiscalinet.ch (Anthra Norell)
Date: Tue, 24 May 2005 10:16:15 +0200
Subject: Encryption with Python?
References: <1115324411.952821.150780@o13g2000cwo.googlegroups.com><001301c552db$dd19d3e0$0201a8c0@mcuf7><d5i0as$ejd$1@sea.gmane.org><mailman.134.1115466844.29826.python-list@python.org>
	<6vh881d59bbecnc45fojknt0rohgt27crl@4ax.com>
Message-ID: <03c401c56038$db0e26e0$0201a8c0@mcuf7>

I wasn't going to pursue this any further. Actually, I am quite disappointed
about the belligerent style of some correspondents. It's not necessary. It
spoils the fun. It cloggs bandwidth.
   Why whack someone over the head who tries to develop an idea of his own.
Such an approach isn't uncommon to earn extra credit in educational
settings.
   True, I have also been offered good advice and being able to extract it
from between insuslts I have expressed my appreciation for it. In return of
the favor I offer a little anecdote about the nature of creativeness.
   The connection between candor and creativeness has always fascinated me.
At some point, almost thirty years ago, I came across an article in a hang
glider magazine by one Dr. Paul MacCready who had just won the Kremer Prize
with his human-powered Gossamer Condor, a prize that had been standing for
decades despite innumerable unsuccessful attempts to win it. In that article
MacCready explained that it was the advent of hang gliders that gave him the
idea to go for the Kremer prize. Namely, he immediately realized that hang
gliders dissipated less energy in stable flight than any other aircraft in
existence, not because the flew so well--they didn't--but because of their
low weight. He calculated that a twenty-kilogram hang glider with a wing
span of close to thirty meters would dissipate no more than one third of a
horse power or thereabout and that is an amount of energy a competition
cyclist generates over the course of a race.
    After winning the prize, MacCready challenged himself to fly across the
English channel and started building an improved second version of his
airplane. Passing through Los Angeles I went to see the project in a Long
Beach hangar and took the opportunity to pick MacCready's brain for the
benefit of our own magazine. Referring to his article I confessed my
surprise that a scientist of his caliber would be inspried by such crude
aeronautical engineering hacks as hang gliders unquestionably were. His
reply was this:
    "I also consider myself an amateur. I have a PhD in aeronautics, but not
in aeronautical engineering. But this just might have been my advantage. All
these many previous failed attempts had been made by people with better
engineering credentials. If their conception of possible solutions was
better defined, it was probably also more constrained by their knowledge of
what an airplane is supposed to be."
    We went on talking about creativeness and MacCready's conclusion still
rings in my ears: "Our education system encourages us to be critical. This
is a great pity. It reinforces our habit to focus on other people's
weaknesses and failures, when we could learn from observing their
strengths."

Frederic

(Robert Kern could have embarrassed me with a plain-text attack, although
his bounty wouldn't have been my credit card details. I tought about
plain-text attacks and found that in addition to changing the values of
bytes I also needed to shuffle them a little. So I added a few lines,
encoded my credit card details and here it is, program, credit card details,
everything but the key.)

1. The credit card details:

string =
'\x84ue\x8d\xec\x98\x02\xba<n\t\xc6\xa6\xd2\xcc\xe4O\x11\xd7\xf5\xe7\x9c\xed
*\x05\x1e\xb3h\x97V\xf8\x9a"%\xec\x14\x03r\xdd\xda\x18\xc0\x9fc\x04&J\xefF\x
cd\xbc\x81\xad\xfe\xb4SV\x1a7[l\x12\xfd\xc9w\xc3u\xf4\x83tK\x1e]{\xf5/\xbfJ\
x8a\xde\x18\xc2jj\xe8er\x10\x99\x1e\xeb\xa3\x86\xf0f\xb9\x95\xb5\xd8\xaaY\x0
8\xb8\xcdf.'

2. The decoding program

def cyrep (string, key):

   """To encrypt use a numeric value as the key. To decrypt use the negative
value of the same number."""

   import random

   CHUNK  = 32

   def process_sequence (sequence):
      s = ''
      for i in xrange (len (sequence)):
         r = random.randint (0, 255)
         s += chr ((ord (sequence [i]) + r * sign) % 256)
      return s

   def preprocess_sequence (sequence):
      random.shuffle (sequence)
      return sequence

   sign = (key > 0) * 2 - 1
   random.seed (abs (key * sign))

   i = 0
   s = ''

   if sign > 0:
      while i < len (string):
         chunk = random.randint (0, CHUNK)
         s_ = preprocess_sequence (list (string [i:i+chunk]))
         s += ''.join (process_sequence (s_))
         i += len (s_)

   else:
      while i < len (string):
         chunk = random.randint (0, CHUNK)
         s_ = list (string [i:i+chunk])
         l = len (s_)
         l_ = range (l)
         s__ = l * [None]
         o  = preprocess_sequence (l_)
         s_ = process_sequence (s_)
         for ii in l_:
            s__ [o[ii]] = s_ [ii]
         s += ''.join (s__)
         i += l

   return s



----- Original Message -----
From: "Christos TZOTZIOY Georgiou" <tzot at sil-tec.gr>
Newsgroups: comp.lang.python
To: <python-list at python.org>
Sent: Friday, May 13, 2005 11:06 AM
Subject: Re: Encryption with Python?


> On Sat, 7 May 2005 13:51:40 +0200, rumours say that "Anthra Norell"
> <anthra.norell at tiscalinet.ch> might have written:
>
> >Here's the challenge. Prove this breakable
> >
>
>'\x10\x88d\x1d\xba\xa1\xdcK\x05w\x02/s\xa7Q0\xeb8\xb6Gx\xef\xcb\x1e=\xf5\x7
f
>
>\x9bI\xcb(\x87>\xa5\x04\xc1soF\xfd\xc6\xc6\xd9|\x971\xdb\xcdT\tw#\x86a\xdc\
x
>
>b8P\xfb=n\xda\x80\x9f\x84m\x12\x98\x98\xca=o\x0b\x8e\x08O\xb7\x0b\x04SC\x96
\
>
>xc7\xab*\x0b\x996\x06\x86\x83(\x8dQ\x9eG\x8f$\xb2x)\xa9fv\x0c1B\x9b\r\xde\x
f
> >fc\x08'
>
> and given that
>
> >I rolled my own for relatively short sequences, like passwords. The key
is
> >an integer. To decrypt use the negative encryption key. I consider the
> >encryption unbreakable, as it is indistinguishable from a random
sequence.
>
> can we suppose that the encrypted text above are the details of your
> credit card (number, name as written on it, expiry date, billing address
> and your first dog's name)?  Do you trust the 'unbreakability' of your
> algorithm that much?
> --
> TZOTZIOY, I speak England very best.
> "Be strict when sending and tolerant when receiving." (from RFC1958)
> I really should keep that in mind when talking with people, actually...
> --
> http://mail.python.org/mailman/listinfo/python-list



From matthew_shomphe at countrywide.com  Fri May 13 17:59:13 2005
From: matthew_shomphe at countrywide.com (Matt)
Date: 13 May 2005 14:59:13 -0700
Subject: How to find the classname of an object? (was Python Documentation)
In-Reply-To: <4284f28c.80913136@news.oz.net>
References: <mailman.503.1115940149.29826.python-list@python.org>
	<hGRge.14335$941.9700@trnddc08> <4283fda8.18221170@news.oz.net>
	<d62dg3$tpe$1@sea.gmane.org>
	<mailman.32.1115997422.29328.python-list@python.org>
	<1116002227.923231.309150@f14g2000cwb.googlegroups.com>
	<4284f28c.80913136@news.oz.net>
Message-ID: <1116021553.771015.320200@g14g2000cwa.googlegroups.com>


Bengt Richter wrote:
> On 13 May 2005 09:37:07 -0700, "Matt"
<matthew_shomphe at countrywide.com> wrote:
>
> >
> >Christopher J. Bottaro wrote:
> >> Christopher J. Bottaro wrote:
> >>
> >> > Bengt Richter wrote:
> >> >
> >> >>  >>> type(obj)
> >> >>  <class '__main__.A'>
> >> >>  >>> type(obj).mro()
> >> >>  [<class '__main__.A'>, <class '__main__.B1'>, <class
> >'__main__.B2'>,
> >> >>  [<class '__main__.C'>, <type 'object'>]
> >> >>  >>> tuple(x.__name__ for x in type(obj).mro())
> >> >>  ('A', 'B1', 'B2', 'C', 'object')
> >> >
> >> > Wow awesome, thats exactly what I was looking for.
> >>
> >> Wait a sec...why doesn't the following code work then?
> >>
> Well, I suspect it actually does work, technically, but I suspect
> it hints at the way old-style classes were implemented in the
environment
> of the new, rather than giving you what you might expect.
>
> >> class FWException(Exception): pass
> >> class FWA(FWException): pass
> >> class FWB(FWA): pass
> >> class FWC(FWB): pass
> >> e = FWC()
> >> print [ cl.__name__ for cl in type(e).mro() ]
> >>
> >> Thanks again.
> >> --C
> >
> >
> >Is it because you need to inherit from "object"?
> >
> >class FWException(Exception, object): pass # note "object"
> >class FWA(FWException): pass
> >class FWB(FWA): pass
> >class FWC(FWB): pass
> >e = FWC()
> >print [ cl.__name__ for cl in type(e).mro()]
> >
> >#prints ['FWC', 'FWB', 'FWA', 'FWException', 'Exception', 'object']
> >
> I'm afraid inheriting explicitly from object will make the exception
unraisable.
> Exceptions are still based on "classic" classes for some reason that
> I don't know enough about to explain.
>
> So if you were hoping to use .mro() with old-style classes to see the
> old-style inheritance chain, as opposed to new-style inheritance that
> underlies access to special entities involved in the implementation
of the old, sorry ;-/
>
> At least that's the way it looks to me, without digging in that part
of the code.
>
> Regards,
> Bengt Richter

D'oh!  So I tested the .mro() functionality but not the
Exception-raisableness (?).

It seems unintuitive to me as to why inheriting from  "object" would
prevent something that also inherited from "Exception" from being
raised.  Does anyone have insight into why this happens?



From Ronald700061 at yahoo.com  Mon May  2 14:17:45 2005
From: Ronald700061 at yahoo.com (Ronald700061 at yahoo.com)
Date: 2 May 2005 11:17:45 -0700
Subject: =?iso-8859-1?B?SW1wb3J0YW50IHBsZWFzZSByZWFkIHRoaXMgVGhhbmsgeW91IGCwurcuLi63urBgsLq3Li4ut7qwYLC6ty6GLi63urBgsLq3Li4ut7qwYLC6ty4ut7qwYCBgsLq3Li4ut7qwYLC6ty4uLre6sGCwurcuhi4ut7qwYLC6ty4uLre6sGCwurcuLre6sGAgYLC6ty4uLre6sGCwurcuLi63urBgsLq3LoYuLre6sGCwurcuLi63urBgsLq3Li63urBgIGCwurcuLi63urBgsLq3Li4ut7qwYLC6ty6GLi63urBgsLq3Li4ut7qwYLC6ty4ut7qwYCBgsLq3Li4ut7qwYLC6ty4uLre6sGCwurcuhi4ut7qwYLC6ty4uLre6sGCwurcuLre6sGAgYLC6ty4uLre6sGCwurcuLi63urBgsLq3LoYuLre6sGCwurcuLi63urBgsLq3Li63urBgIGCwurcuLi63urBgsLq3Li4ut7qwYLC6ty6GLi63urBgsLq3Li4ut7qwYLC6ty4ut7qwYCBgsLq3Li4ut7qwYLC6ty4uLre6sGCwurcuhi4ut7qwYLC6ty4uLre6sGCwurcuLre6sGAgR09PR0xFt05FV1NHUk9VULdQT1NUtzE1NQ==?=
Message-ID: <1115057865.662012.234170@z14g2000cwz.googlegroups.com>


This is the most important question of your life.

The question is: Are you saved?

It is not a question of how good you are,
nor if you are a church member, but are you saved?

Are you sure you will go to Heaven when you die?

The reason some people don't know for sure if they
are going to Heaven when they die is because they
just don't know.

The good news is that you can know for sure that
you are going to Heaven.

The Holy Bible describes Heaven as a beautiful
place with no death, sorrow, sickness or pain.

God tells us in the Holy Bible how simple it is
to be saved so that we can live forever with Him
in Heaven.

"For if you confess with your mouth Jesus is Lord
and believe in your heart that God raised Him from
the dead, you WILL BE SAVED." (Romans 10:9)

Over 2000 years ago God came from Heaven to earth
in the person of Jesus Christ to shed His blood
and die on a cross to pay our sin debt in full.

Jesus Christ was born in Israel supernaturally to
a virgin Jewish woman named Mary and lived a sinless
life for thirty-three years.

At the age of thirty-three Jesus was scourged and
had a crown of thorns pressed onto His head then
Jesus was crucified.

Three days after Jesus died on a cross and was
placed in a grave Jesus rose from the dead as Jesus
said would happen before Jesus died.

If someone tells you that they are going to die and
then three days later come back to life and it
actually happens then this person must be the
real deal.

Jesus Christ is the only person that ever lived a
perfect sinless life.

This is why Jesus is able to cover our sins(misdeeds)
with His own blood because Jesus is sinless.

The Holy Bible says, "In Him(Jesus) we have
redemption through His blood, the forgiveness of
sins..." (Ephesians 1:7)

If you would like God to forgive you of your past,
present and future sins just ask Jesus Christ to be
your Lord and Saviour.

It doesn't matter how old you are or how many bad
things that you have done in your life including
lying and stealing all the way up to murder.

Just pray the prayer below with your mouth and mean
it from your heart and God will hear you and save you.

Dear Jesus Christ, I want to be saved so that I can
have a home in Heaven with You when I die. I agree
with You that I am a sinner. I believe that You love
me and want to save me. I believe that You bled and
died on the cross to pay the penalty for my sins and
that You rose from the dead. Please forgive my sins
and come into my heart and be my Lord and Saviour.
Thanks Lord Jesus Christ for forgiving me and saving
me through Your merciful grace. Amen.

Welcome to the family of God if you just allowed God
to save you.

Now you are a real Christian and you can know for
sure that you will live in Heaven forever when this
life comes to an end.

As a child of God we are to avoid sin(wrongdoing),
but if you do sin the Holy Bible says, "My dear
children, I write this to you so that you will not
sin. But if anybody does sin, we have one who speaks
to the Father in our defense Jesus Christ,
the Righteous One."

Those of you that have not yet decided to place your
trust in the Lord Jesus Christ may never get another
chance to do so because you do not know when you
will die.

Jesus said, "I am the way, the truth and the life:
no one can come to the Father(God)(in Heaven), but
by me." (John 14:6)

This means that if you die without trusting in Jesus
Christ as your Lord and Saviour you will die in your
sins and be forever separated from the love of God in
a place called Hell.

The Holy Bible descibes Hell as a place of eternal
torment, suffering, pain and agony for all those who
have rejected Jesus Christ.

The good news is that you can avoid Hell by allowing
Jesus Christ to save you today. Only then will you
have true peace in your life knowing that no matter
what happens you are on your way to Heaven.


Praise the Lord!
Servant of the Lord Jesus Christ
Ronald L. Grossi


* Show this to your family and friends so they can also be saved.

* This message may get deleted so you may want to print a copy.

* Just press the [Ctrl][P] keys on your keyboard to print this page.



`???...???`???...???`???.?..???`???...???`???..???`


Got Questions?
http://www.gotquestions.org/archive.html

Other Languages
http://www.godssimpleplan.org/gsps.html

Free Movie: To Hell and Back
http://www.tbn.org/index.php/8/1.html

Animation
http://www.gieson.com/Library/projects/animations/walk/index.html

The Passion Of The Christ
http://www.thepassionofthechrist.com

Beware Of Cults
http://www.carm.org/cults/cultlist.htm

About Hell
http://www.equip.org/free/DH198.htm

Is Jesus God?
http://www.powertochange.com/questions/qna2.html

Free Online Bible
http://www.biblegateway.com


`???...???`???...???`???.?..???`???...???`???..???`



From ramen at lackingtalent.com  Fri May  6 15:35:11 2005
From: ramen at lackingtalent.com (Dave Benjamin)
Date: Fri, 06 May 2005 12:35:11 -0700
Subject: win32: structured storage
In-Reply-To: <mailman.92.1115378692.29826.python-list@python.org>
References: <HxBee.23620$R46.6537@tornado.socal.rr.com>
	<mailman.92.1115378692.29826.python-list@python.org>
Message-ID: <EHPee.15132$gc6.9408@okepread04>

Steve Holden wrote:
> tlviewer wrote:
> 
>  > CHM is supposed to be structured storage (ITSF). If a given CHM
>  > file is infected it most likely has an embedded EXE file -- mine
>  > had one called [Open.exe].
>  >
> Ironic, really, since Microsoft insist that the browser must be 
> fully-integrated with the operating system I suppose that measn we had 
> better all start using Linux.

Even more ironically, it would seem that in effort to kill Netscape they 
are killing Windows.


From skip at pobox.com  Wed May 11 13:16:06 2005
From: skip at pobox.com (Skip Montanaro)
Date: Wed, 11 May 2005 12:16:06 -0500
Subject: Problems with csv module
In-Reply-To: <d5tc55$q3e$1@sea.gmane.org>
References: <d5sngn$l4$03$1@news.t-online.com>
	<mailman.338.1115809896.29826.python-list@python.org>
	<d5spph$ktm$01$1@news.t-online.com>
	<a4r381p3s5uhud58tvd2m2nod1ebmo48u0@4ax.com>
	<d5tc55$q3e$1@sea.gmane.org>
Message-ID: <17026.15830.303909.792010@montanaro.dyndns.org>


    Fredrik> does the CSV format even support Unicode-encoded data streams?

Based on the requests I've seen here and on the csv at mojam.com mailing list,
it appears people are certainly generating CSV files which contain
Unicode-encoded data.

Skip


From rhall at thiess.com.au  Thu May 26 05:40:56 2005
From: rhall at thiess.com.au (Bloke)
Date: 26 May 2005 02:40:56 -0700
Subject: SSL (HTTPS) with 2.4
References: <1116396878.995648.206820@g49g2000cwa.googlegroups.com>
	<1116406256.213128.68180@f14g2000cwb.googlegroups.com>
	<grGie.3984$uR4.2802@newsread2.news.atl.earthlink.net>
	<1116422715.320683.228810@g49g2000cwa.googlegroups.com>
	<1116424363.953180.79260@g47g2000cwa.googlegroups.com>
	<1116424660.917136.79680@g47g2000cwa.googlegroups.com>
	<428b7bc5$0$7346$9b622d9e@news.freenet.de>
	<1116463961.944713.210860@g49g2000cwa.googlegroups.com>
	<mailman.208.1116513082.8733.python-list@python.org>
	<1116524774.606167.98240@f14g2000cwb.googlegroups.com>
	<1116550788.207740.171780@o13g2000cwo.googlegroups.com>
	<mailman.241.1116588685.8733.python-list@python.org>
	<1116627976.845517.268370@z14g2000cwz.googlegroups.com>
	<1116808438.811166.49180@g49g2000cwa.googlegroups.com>
	<1117055802.770863.195480@g14g2000cwa.googlegroups.com>
Message-ID: <1117100456.058010.315640@g43g2000cwa.googlegroups.com>

OK.

I try pyopenssl and can get a secure socket to the server, but am
unsure how to use this socket with urllib2 or even httplib.

Here's the code I'm using:

import sys, socket, string, base64, httplib
from OpenSSL import SSL


# Connects to the server, through the proxy
def run(server, proxy):
    user='me';passwd='pass'
    #setup basic authentication
    if user and passwd:
        user_pass=base64.encodestring(user+':'+passwd)
        proxy_authorization='Proxy-authorization: Basic
'+user_pass+'\r\n'
    else:
        proxy_authorization=''

    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    try:
        s.connect(proxy)
        print 'Socket established'
    except socket.error, e:
        print "Unable to connect to %s:%s %s" % (proxy[0], proxy[1],
str(e))
        sys.exit(-1)

    # Use the CONNECT method to get a connection to the actual server
    connectMessage = "CONNECT %s:%s HTTP/1.0\r\n" % (server[0],
server[1]) + \
                     proxy_authorization #+ 'Proxy-Connection:
Keep-Alive\r\n'
    print connectMessage
    s.send(connectMessage)
    print '\nConnect sent...'
    print "Proxy response: %s" % string.strip(s.recv(1024))

    ctx = SSL.Context(SSL.SSLv2_METHOD)
    conn = SSL.Connection(ctx, s)

    # Go to client mode
    conn.set_connect_state()

    # start using HTTP

    conn.send("HEAD / HTTP/1.0\n\n")
    print "Server response:"
    print "-" * 40
    while 1:
        try:
            buff = conn.recv(4096)
        except SSL.ZeroReturnError:
            # we're done
            break

        print buff,

    #initalize httplib and replace with your socket
    sock = httplib.FakeSocket(s, conn)
    print 'Fake socket installed'
    h=httplib.HTTPSConnection(server[0],server[1])
    h.sock=sock
    print 'Sock installed'
    h.request('GET','/')
    print 'Request sent.'
    r=h.getresponse()
    print r.read()

if __name__ == '__main__':
    server = ('www.anz.com', 443)
    proxy = ('proxy.company.com, 8008)
    run(server, proxy)

I get the following response at line
59 r=h.getresponse()

Socket established
CONNECT www.anz.com:443 HTTP/1.0

Proxy-authorization: Basic cmhhbGw6YWxlbW0y




Connect sent...
Proxy response: HTTP/1.0 200 Connection established
conn established
conn connect state set
Server response:
----------------------------------------
HTTP/1.1 200 OK

Server: Microsoft-IIS/4.0

Date: Thu, 26 May 2005 09:33:26 GMT

Content-Type: text /html

Set-Cookie: ASPSESSIONIDCRADCCBB=JPGLOCLDMMFNKJKCMIBADHOH; path=/

Cache-control: private



Fake socket installed
Sock installed
Request sent.
Traceback (most recent call last):
  File "C:\Documents and
Settings\rhall\Desktop\software\python\tunnel\proxy-openssl.py", line
65, in ?
    run(server, proxy)
  File "C:\Documents and
Settings\rhall\Desktop\software\python\tunnel\proxy-openssl.py", line
59, in run
    r=h.getresponse()
  File "C:\Python24\Lib\httplib.py", line 862, in getresponse
    response.begin()
  File "C:\Python24\Lib\httplib.py", line 333, in begin
    version, status, reason = self._read_status()
  File "C:\Python24\Lib\httplib.py", line 291, in _read_status
    line = self.fp.readline()
  File "C:\Python24\Lib\httplib.py", line 981, in readline
    s = self._read()
  File "C:\Python24\Lib\httplib.py", line 937, in _read
    buf = self._ssl.read(self._bufsize)
ZeroReturnError

I tried enabling 'Proxy-Connection: Keep-Alive' but then it hangs for
ages at:
  conn.send("HEAD / HTTP/1.0\n\n")
and eventually returns a 'handshaking' error.

Any pointers anyone?

Rob



From curi42 at gmail.com  Thu May 26 20:33:33 2005
From: curi42 at gmail.com (Elliot Temple)
Date: 26 May 2005 17:33:33 -0700
Subject: Case Sensitive, Multiline Comments
In-Reply-To: <429654DA.9050903@lexicon.net>
References: <1117137316.140791.210430@g14g2000cwa.googlegroups.com>
	<8664x5y92g.fsf@guru.mired.org> <429654DA.9050903@lexicon.net>
Message-ID: <1117154013.092736.298310@g14g2000cwa.googlegroups.com>

Thanks for the link on case sensitivity.  I'm curious about the person
who found case sensitivity useful though: what is it useful for?

The way I find multi-line comments useful is to quickly comment out a
block of code while debugging.  A good development environment can
(mostly) solve that one though.



From t-meyer at ihug.co.nz  Thu May 26 22:26:57 2005
From: t-meyer at ihug.co.nz (Tony Meyer)
Date: Fri, 27 May 2005 14:26:57 +1200
Subject: What are OOP's Jargons and Complexities?
In-Reply-To: <ECBA357DDED63B4995F5C1F5CBE5B1E802F31ACE@its-xchg4.massey.ac.nz>
Message-ID: <ECBA357DDED63B4995F5C1F5CBE5B1E801DB021A@its-xchg4.massey.ac.nz>

[Paul Rubin]
> Strong typing means there [are] a lot of variables whose names
> are in ALL CAPS.

+1 QOTW.

=Tony.Meyer



From thomas at eforms.co.nz  Thu May  5 08:15:17 2005
From: thomas at eforms.co.nz (Thomas Thomas)
Date: Fri, 6 May 2005 00:15:17 +1200
Subject: UnicodeDecodeError 
Message-ID: <000801c5516c$19a41a30$bb64a8c0@eformswin>

Hi all 


import httplib, mimetypes
import os;

def get_content_type(filename):
    return mimetypes.guess_type(filename)[0] or 'application/octet-stream'



filepath= 'c:/Documents and Settings/Administrator/Desktop/tmp/test.pdf';
f = open(filepath, "rb")
data = f.read()
f.close()

(filedir, filename) = os.path.split(filepath)
filename=unicode(filename);
#file = ('file', filename, data)  #This won't work will give a UnicodeDecodeError: 'ascii' codec can't decode byte 0xc7 in position 10: ordinal not in range(128)
file = ('file', filename, 'data'*100) #this will work fine
#file = ('file', 'test.pdf', data) #This also works fine
files = [file]
CRLF = '\r\n'
L = []
for (key, filename, value) in files:
    L.append('Content-Disposition: form-data; name="%s"; filename="%s"' % (key, filename))
    L.append(value)
body = CRLF.join(L)

print "ok"

can anyone put some light.. whats going behind..

cheers
Thomas


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From cjbottaro at alumni.cs.utexas.edu  Wed May 25 12:48:18 2005
From: cjbottaro at alumni.cs.utexas.edu (Christopher J. Bottaro)
Date: Wed, 25 May 2005 11:48:18 -0500
Subject: Python analog of Ruby on Rails?
Message-ID: <d72a4h$29s$1@sea.gmane.org>

Hello fellow Pythonists,
  Is there such a thing?  My work is thinking of maybe experimenting with
Ruby on Rails for some lesser projects.  Naturally, I wonder if Python can
do as good a job or better...

Thanks for the info,
-- C



From kent37 at tds.net  Tue May 31 08:37:11 2005
From: kent37 at tds.net (Kent Johnson)
Date: Tue, 31 May 2005 08:37:11 -0400
Subject: scripting browsers from Python
In-Reply-To: <mailman.281.1117536008.18027.python-list@python.org>
References: <1117525953.255166.234420@g14g2000cwa.googlegroups.com>
	<mailman.281.1117536008.18027.python-list@python.org>
Message-ID: <429c5a4e$1_3@newspeer2.tds.net>

Simon Brunning wrote:
> On 31 May 2005 00:52:33 -0700, Michele Simionato
> <michele.simionato at gmail.com> wrote:
> 
>>I would like to know what is available for scripting browsers from
>>Python.
> 
> I don't know of anything cross platform, or even cross browser, but on
> Windows, IE can be automated via COM - see
> <http://www.mayukhbose.com/python/IEC/> for example

Also http://pamie.sourceforge.net/

Kent


From grante at visi.com  Tue May 17 11:24:37 2005
From: grante at visi.com (Grant Edwards)
Date: Tue, 17 May 2005 15:24:37 -0000
Subject: Windows distribution suggestions?
References: <7x3bsmfjdg.fsf_-_@ruckus.brouhaha.com>
Message-ID: <118k35lnpte8498@corp.supernews.com>

On 2005-05-17, Paul Rubin <http> wrote:

> As what must be penance for something or other, I'm needing to release
> a Python app for use under Windows XP. 

I'm a Unix guy who occasionally ships a Python app for Win32,
and I always recommend py2exe and inno setup:

  py2exe       http://starship.python.net/crew/theller/py2exe/
  inno setup   http://www.jrsoftware.org/isinfo.php

Inno setup is as good as any other installer, and it's free.
  
-- 
Grant Edwards                   grante             Yow!  Did I SELL OUT yet??
                                  at               
                               visi.com            


From f.geiger at vol.at  Tue May 17 15:10:11 2005
From: f.geiger at vol.at (F. GEIGER)
Date: Tue, 17 May 2005 21:10:11 +0200
Subject: pysqlite2.dbapi2.ProgrammingError: Incorrect number of bindings
	supplied. The current statement uses 0, and there are -1 supplied.
Message-ID: <d6dfi8$ck8$1@news.hispeed.ch>

Im on Python 2.3.4, using pysqlite 2.0.0 (final).

When I try to execute

self._dbc.execute(q, data)

where q is 'select count(*) from Difflets ' and date is None

I get the following exception:

pysqlite2.dbapi2.ProgrammingError: Incorrect number of bindings supplied.
The current statement uses 0, and there are -1 supplied.

Any ideas?

Many thanks in advance and kind regards
Franz GEIGER





From __peter__ at web.de  Thu May  5 15:29:36 2005
From: __peter__ at web.de (Peter Otten)
Date: Thu, 05 May 2005 21:29:36 +0200
Subject: How to detect a double's significant digits
References: <1115314620.902071.323410@f14g2000cwb.googlegroups.com>
	<mailman.59.1115316262.29826.python-list@python.org>
	<1115316826.659271.247350@o13g2000cwo.googlegroups.com>
	<iZ-dnQ8kqqS3_uffRVn-2Q@comcast.com>
	<1115320481.000911.111220@z14g2000cwz.googlegroups.com>
Message-ID: <d5ds5o$ojj$03$1@news.t-online.com>

mrstephengross wrote:

> This was all supposed to be on comp.lang.c++, but

You may still want to read the following thread on Python-Dev:
http://mail.python.org/pipermail/python-dev/2004-March/043703.html

A link mentioned by Andrew Koenig may be helpful:
http://www.netlib.org/fp/

"""
file    g_fmt.c
by      David Gay
for     ANSI C or C++ source for function g_fmt(char *, double):
,       with help from dtoa, g_fmt(buf, x) sets buf to the shortest
,       decimal string that correctly rounds to x and returns buf.
"""

Peter



From http  Mon May  2 20:51:09 2005
From: http (Paul Rubin)
Date: 02 May 2005 17:51:09 -0700
Subject: cgi "print statement" in multithreaded enviroment?
References: <mailman.59.1115079020.6583.python-list@python.org>
	<4276c282$0$153$e4fe514c@news.xs4all.nl>
	<mailman.60.1115079903.6583.python-list@python.org>
Message-ID: <7x1x8pcete.fsf@ruckus.brouhaha.com>

vegetax <vegeta.z at gmail.com> writes:
> But i want to use "print" as a commodity feature, print >>
> self.response,'html..'  is longer to type than
> self.response.write('html..')

w = self.response.write

w('html...')
w('more html...')
w('still more html')


From onurb at xiludom.gro  Wed May 18 11:39:26 2005
From: onurb at xiludom.gro (bruno modulix)
Date: Wed, 18 May 2005 17:39:26 +0200
Subject: Looking for bored python newbies
In-Reply-To: <1116423028.626953.74160@f14g2000cwb.googlegroups.com>
References: <1116423028.626953.74160@f14g2000cwb.googlegroups.com>
Message-ID: <428b61af$0$23730$626a14ce@news.free.fr>

cpu.crazy at gmail.com wrote:
> Hey if you're a python newbie, and ur bored cause everything everybody
> else is doing hten you're not alone. How'd you like to start a project
> of your own or join a simple project?
> Plz contact me if you do with the subject line: Bored Newbie
> 
> CPUFreak91
>     (cpu.crazy at gmail.com)
> (Still quite a newbie myself :-))
> 

http://www.catb.org/~esr/faqs/smart-questions.html#writewell

-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From fredrik at pythonware.com  Wed May 11 13:11:35 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Wed, 11 May 2005 19:11:35 +0200
Subject: Problem combining python code and html
References: <42822b3d$0$653$ba624c82@nntp02.dk.telia.net>
Message-ID: <d5tdtv$lh$1@sea.gmane.org>

Hansan wrote:

> I used the same code they use for making the two display functions and the
> same template for the html form. I even tried using the form template they
> use too, but it still dosnt work. I will now show how the functions and
> templates look like.
>
> The two display functions are:
> def Display(Content):
>     TemplateHandle = open(TemplateFile, "r")
>     TemplateInput = TemplateHandle.read()
>     TemplateHandle.close()
>     BadTemplateException = "There was a problem with the HTML template."
>     SubResult = re.subn("<!-- *** INSERT CONTENT HERE *** -->",
> Content,TemplateInput)

re.subn takes a regular expression, in which certain characters have
special meanings.  for example, in

    <!-- *** INSERT JWZ QUOTE HERE *** -->

"*" is reserved character, which means "repeat preceeding expression".

so "***" means repeating a repeated repeat, which makes very little
sense, which is why the RE engine complains.

changing

>     SubResult = re.subn("<!-- *** INSERT CONTENT HERE *** -->",
> Content,TemplateInput)

    SubResult = TemplateInput.replace(
            "<!-- *** INSERT CONTENT HERE *** -->",
            Content
    )

should work better.

</F>





From f.geiger at vol.at  Fri May 20 02:42:54 2005
From: f.geiger at vol.at (F. GEIGER)
Date: Fri, 20 May 2005 08:42:54 +0200
Subject: [pysqlite] How do I use pysqlite in a multi-threading env.?
Message-ID: <d6k0t9$rq2$1@news.hispeed.ch>

In my wxPython-app a part of it gathers data, when a button is pressed, and
stores it into a db.

The GUI part should display the stuff being stored in the db.

When both parts work on the same connection, I get "SQL statements in
progress errors". Seems ok to me, you can't do that.

So, next step: Both parts get a separate connection. Now I get "Database
locked" errors. Hmm, yes, it's GUI stuff after all, being all in the same
thread.

So, next step: I put the data gathering part into a real thread, that's
started, wehn the "Scan" button is pressed. This way the "Database locked"-
errors should got away. But now I get "SQLite objects created in a thread
can only be used in that same thread.The object was created in thread id
3576 and this is thread id 1040". Hmm, true, I want to display db content,
that was stored by an other thread. But that's what multi-threading
capabilities are for!

I must be missing something here. Anyway, I'm a bit lost now, really. So,
how are you doing such stuff with pysqlite?

Kind regards
Franz GEIGER






From Scott.Daniels at Acm.Org  Tue May  3 10:35:16 2005
From: Scott.Daniels at Acm.Org (Scott David Daniels)
Date: Tue, 03 May 2005 07:35:16 -0700
Subject: cgi "print statement" in multithreaded enviroment?
In-Reply-To: <mailman.66.1115087190.6583.python-list@python.org>
References: <d56f4t$sch$1@sea.gmane.org>
	<20050503013716.GA3367@unpythonic.net>	<d56lrn$h9u$1@sea.gmane.org>
	<mailman.66.1115087190.6583.python-list@python.org>
Message-ID: <42778621$1@nntp0.pdx.net>

vegetax wrote:
> So it would be something like this, right??
> 
> class ThreadSpecificFile:
>          def __init__(s):
>              self.files = []
>          def set_stdout(f,thread_id):
>              self.files[thread_id] = f
>          def clean_up(thread_id):
>              del self.files[thread_id]
>          def write(data):
>              self.files[thread.get_ident()].write(data)
> 
> sys.stdout = ThreadSpecificFile()

     import sys, thread

     class ThreadSpecificFile:
         def __init__(self, original):
             self.files = dict()
             self.original = original

         def set_stdout(self, f):
             self.files[thread.get_ident()] = f

         def close(self):
             try:
                 this = self.stops().close()
             except KeyError:
                 pass

         def stops(self):
             return self.files.pop(thread.get_ident())

         def write(self, data):
             self.files.get(thread.get_ident(),
                            self.original).write(data)
             except KeyError:
                 self

     sys.stdout = ThreadSpecificFile(sys.stdout)


--Scott David Daniels
Scott.Daniels at Acm.Org


From michele.simionato at gmail.com  Mon May  2 08:18:57 2005
From: michele.simionato at gmail.com (Michele Simionato)
Date: 2 May 2005 05:18:57 -0700
Subject: MRO problems with diamond inheritance?
In-Reply-To: <1115034897.225080.313990@l41g2000cwc.googlegroups.com>
References: <d53jqq$b88$1@newsg4.svr.pol.co.uk>
	<1114987828.055744.250090@z14g2000cwz.googlegroups.com>
	<1115004565.128735.58670@o13g2000cwo.googlegroups.com>
	<1115008163.017331.306290@o13g2000cwo.googlegroups.com>
	<1115024383.848366.64190@z14g2000cwz.googlegroups.com>
	<1115034897.225080.313990@l41g2000cwc.googlegroups.com>
Message-ID: <1115036337.530436.47890@g14g2000cwa.googlegroups.com>

Well, writing that book would be a major undertaking that I am not
willing
to take any soon ;)

However, all you are asking for is already in my lectures at ACCU:
http://www.reportlab.org/~andy/accu2005/pyuk2005_simionato_wondersofpython.zip

>From the README:

"""
<snip>
Generally speaking these lectures are unpolished, too concise, with
more code than words, and with cutting edge/experimental code.
Read them at your risk and peril. Take in account the fact that they
were prepared as a last minute replacement for Alex Martelli's
tutorial,
with a limited amount of time and a very advanced program to follow.

My main concern in preparing these notes was to give the readers a few
*ideas*, not polished solutions. If you are reading these notes, you
will be more than capable to customize these ideas to your own
situation
and to fix the unavoidable little bugs, imperfections, annoyances.

Whereas I recommend the first lecture about iterators and generators
to everybody, take in account than the second and especially the
third lecture may cause your head to explode. I do not take any
responsability in that case.
"""
                              Michele Simionato



From a-steinhoff at web.de  Fri May 13 08:34:45 2005
From: a-steinhoff at web.de (Armin Steinhoff)
Date: Fri, 13 May 2005 14:34:45 +0200
Subject: pyvm -- faster python
In-Reply-To: <mailman.13.1115978217.29328.python-list@python.org>
References: <mailman.164.1115548611.29826.python-list@python.org>	<1115561483.741761.212140@f14g2000cwb.googlegroups.com>	<m102l2-9qr.ln1@home.rogerbinns.com>	<mailman.264.1115716603.29826.python-list@python.org>	<vu38l2-k5v.ln1@home.rogerbinns.com>	<7xvf5qbir1.fsf@ruckus.brouhaha.com>	<nt98l2-1e.ln1@home.rogerbinns.com>	<7xpsvymlse.fsf@ruckus.brouhaha.com>	<1115791624.856252.247890@z14g2000cwz.googlegroups.com>	<7x1x8el18e.fsf@ruckus.brouhaha.com>	<1115876410.813839.222080@g43g2000cwa.googlegroups.com>	<mailman.441.1115886157.29826.python-list@python.org>	<d61sha$7qe$05$1@news.t-online.com>
	<mailman.13.1115978217.29328.python-list@python.org>
Message-ID: <d624fq$e93$00$1@news.t-online.com>

Stelios Xanthakis wrote:
> Armin Steinhoff wrote:
> 
>>>
>>> pyvm has that. A big part of it is written in "lightweight C++" [1].
>>
>>
>>
>> Realy ?  I have downloaded the lwc distribution and checked it out.
>> It was a surprise that none of the examples are working.
>> I'm using SuSE 9.0 with  gcc 3.3.1 ...
>>
> 
> :(
> 
>> Is there a working version of lwc ???
>>
> 
> pyvm is written in lwc-2.0 which is not yet released because
> nobody's using it.

As you mentioned it ... lwc-2.0 is used for pyvm. So it is used :)

Do you have an idea when lwc-2.0 will be releast ?

Everyone who are interested in pyvm will need it ...


-- Armin


> 
> 
> Stelios


From dave.benjamin at gmail.com  Thu May  5 12:28:11 2005
From: dave.benjamin at gmail.com (Dave Benjamin)
Date: Thu, 05 May 2005 09:28:11 -0700
Subject: annonymous functions -- how to
In-Reply-To: <YuWdnVUxIKrdmuffRVn-oA@powergate.ca>
References: <1115239458.776800.240080@g14g2000cwa.googlegroups.com>
	<d5bdip$bpp$05$2@news.t-online.com>
	<42795acb.685370470@news.oz.net>
	<1115264804.625020.203800@f14g2000cwb.googlegroups.com>
	<YuWdnVUxIKrdmuffRVn-oA@powergate.ca>
Message-ID: <TPree.10739$fI.442@fed1read05>

Peter Hansen wrote:
> I doubt there's a valid usecase for a "anonymous" function that has more 
> than a line or two.  Personally, I don't think there's a good usecase 
> for an anonymous function longer than one line...

The case that I keep running into regards event-driven programming. I 
need to do a series of operations that are tied together asynchronously 
via callback functions, but I still want the actions to read in-order. 
With anonymous functions (and I mean the ones that you can use within 
expressions, Bengt ;) ), I could write something like the following:

def add_thingy():
     with_next_thingy_id(def(thingy_id):
         print 'got thingy id:', thingy_id
         with_next_doodad_id(def(doodad_id):
             pring 'got doodad id:', doodad_id
             with_new_thingy_doodad(thingy_id, doodad_id,
                                    def(thingy_doodad):
                 print 'thingy doodad created, froobling...'
                 frooble(thingy_doodad)
                 print 'froobling complete'
             )
         )
     )

In this case, having to name these callback functions is tiring and 
awkward, and (IMHO) disrupts the flow of my function:

def add_thingy():
     def next_thingy_id_func(thingy_id):
         print 'got thingy id:', thingy_id
         def next_doodad_id_func(doodad_id):
             print 'got doodad id:', doodad_id
             def new_thingy_doodad_func(thingy_doodad):
                 print 'thingy doodad created, froobling...'
                 frooble(thingy_doodad)
                 print 'froobling complete'
             with_new_thingy_doodad(thingy_id, doodad_id,
                                    new_thingy_doodad_func)
         with_next_doodad_id(next_doodad_id_func)
     with_next_thingy_id(next_thingy_id_func)

There is no reason why these callbacks would necessarily be one-liners 
or ten-liners. I suppose this problem could be solved by defining all 
the functions at the top-level (or by using bound methods of an object), 
but to me this is harder to maintain and doesn't read as well.

Not life or death, but there's at least one use case that I would at 
least consider "valid". Your definition of "valid" may differ, of course. =)

Dave


From news at andyjeffries.co.uk  Wed May  4 10:47:09 2005
From: news at andyjeffries.co.uk (Andy Jeffries)
Date: Wed, 04 May 2005 14:47:09 GMT
Subject: Python & SQLite
In-Reply-To: <1115131256.058058.139980@o13g2000cwo.googlegroups.com>
References: <d57g8v$n4c$1@sunce.iskon.hr>
	<mailman.86.1115114086.6583.python-list@python.org>
	<1115131256.058058.139980@o13g2000cwo.googlegroups.com>
Message-ID: <Nf5ee.54524$R24.31292@fe05!news.easynews.com>

dcrespo wrote:
> Does PySQLite run on Linux?

Yes!

>From my Gentoo laptop:

andyvaio root # emerge -av pysqlite

These are the packages that I would merge, in order:

Calculating dependencies ...done!
[ebuild   R   ] dev-python/pysqlite-0.5.1  0 kB

Total size of downloads: 0 kB

Do you want me to merge these packages? [Yes/No]



Cheers,


Andy


From dalke at dalkescientific.com  Tue May 31 21:41:34 2005
From: dalke at dalkescientific.com (Andrew Dalke)
Date: Wed, 01 Jun 2005 01:41:34 GMT
Subject: pickle alternative
References: <1117520276.417970.207680@g14g2000cwa.googlegroups.com>
	<pan.2005.05.31.07.11.10.818637@dalkescientific.com>
	<1117524878.988878.181820@g44g2000cwa.googlegroups.com>
	<pan.2005.05.31.07.58.37.334894@dalkescientific.com>
	<1117527950.319411.193030@g44g2000cwa.googlegroups.com>
Message-ID: <pan.2005.06.01.01.41.33.637671@dalkescientific.com>

simonwittber wrote:
> marshal can serialize small structures very qucikly, however, using the
> below test value:
> 
> value = [r for r in xrange(1000000)] +
> [{1:2,3:4,5:6},{"simon":"wittber"}]
> 
> marshal took 7.90 seconds to serialize it into a 5000061 length string.
> decode took 0.08 seconds.

Strange.  Here's what I found:

>>> value = [r for r in xrange(1000000)] +[{1:2,3:4,5:6},{"simon":"wittber"}]
>>> import time, marshal
>>> t1=time.time();s=marshal.dumps(value);t2=time.time()
>>> t2-t1
0.22474002838134766
>>> len(s)
5000061
>>> t1=time.time();new_value=marshal.loads(s);t2=time.time()
>>> t2-t1
0.3606879711151123
>>> new_value == value
True
>>> 

I can't reproduce your large times for marshal.dumps.  Could you
post your test code?

				Andrew
				dalke at dalkescientific.com



From exarkun at divmod.com  Wed May 11 09:15:07 2005
From: exarkun at divmod.com (Jp Calderone)
Date: Wed, 11 May 2005 13:15:07 GMT
Subject: Replacing open builtin
In-Reply-To: <1115816164.517116.124070@g14g2000cwa.googlegroups.com>
Message-ID: <20050511131507.15422.196227562.divmod.quotient.32331@ohm>

On 11 May 2005 05:56:04 -0700, rmm at iname.com wrote:
>Sorry, should maybe have used __import__ as an example.
>Let's say I grab import, store the reference within the Isolate class
>and then redirect the builtin import to a function in the Isolate class
>which only allows certain modules to be imported -eg not sys.   Would
>this be secure?
>

  Probably not.  For example:

    >>> (1).__class__.__bases__[0].__subclasses__()[-1]('/dev/null')
    <open file '/dev/null', mode 'r' at 0xb7df53c8>

  Security through subtracting features usually ends up leaving some holes around (because there's just that *one* more thing you missed).  What the holes are depends on the details of the implementation, but they pretty much always exist.  Making a reference-restricted Python interpreter is a large challenge: you either have to spend a huge amount of effort taking things out of CPython (months and months of development time, at least), or write a new interpreter from scratch.

  Older versions of Python thought they had this licked, see the rexec module for the attempt that is no longer maintained.

  Jp


From km at mrna.tn.nic.in  Mon May  2 13:41:54 2005
From: km at mrna.tn.nic.in (km)
Date: Mon, 2 May 2005 23:11:54 +0530
Subject: Supercomputer and encryption and compression @ rate of 96%
In-Reply-To: <d3ll5p$mj3$1@sea.gmane.org>
References: <d3ll5p$mj3$1@sea.gmane.org>
Message-ID: <20050502174154.GA13603@mrna.tn.nic.in>

Hi all,

This was posted long ago.
I tried to compress a  mp3 file but i couldnt get the keycode+".out" file which is of size 1 bit. instead it is printed to STDOUT. i am usng python 2.4 . i understand that the keycode is embedded in the filename itself. Is it a problem with python not able to create a file with such a big filename ? 
any workarounds ? 

regards,
KM
----------------------------------------------------------------------------
On Thu, Apr 14, 2005 at 01:49:22PM +0200, Fredrik Lundh wrote:
> Will McGugan wrote:
> 
> > Please implement this as a Python module. I would like to compress my mp3 collection to single 
> > bits.
> 
> here's the magic algorithm (somewhat simplified):
> 
> def algorithm(data):
>     m = 102021 # magic constant
>     d = [int(c) for c in str(1*2*3*4*5*m+5+4+2+1)]
>     x = [ord(c) for c in hex(1+2+4+5+m*5*4*3*2*1)]
>     x[d[0]*d[1]*d[2]] = x[d[-1]] + sum(d) - d[d[-d[-1]-1]] + d[0]
>     x = __import__("".join(chr(c) for c in x[d[0]*d[1]:])).encodestring
>     return "".join(x(data).split("\n")).rstrip("="), sum(d)-sum(reversed(d))
> 
> and here's a driver for your MP3 collection:
> 
> import glob
> 
> def compress(filename):
>     data = open(filename, "rb").read()
>     keycode, bit = algorithm(data)
>     file = open(keycode + ".out", "wb")
>     file.write(chr(bit))
>     file.close()
>     print "compressed", filename,
>     print len(data), "=>", 1, round(100.0/len(data), 3), "%"
> 
> for file in glob.glob("*.mp3"):
>     compress(file)
> 
> </F> 
> 
> 
> 
> -- 
> http://mail.python.org/mailman/listinfo/python-list
> 



From james at wrong.nu  Sun May  8 09:22:33 2005
From: james at wrong.nu (R. C. James Harlow)
Date: Sun, 8 May 2005 14:22:33 +0100
Subject: Controlling kwrite by dcop
In-Reply-To: <1115556061.120200.268900@z14g2000cwz.googlegroups.com>
References: <1115556061.120200.268900@z14g2000cwz.googlegroups.com>
Message-ID: <200505081422.38643.james@wrong.nu>

On Sunday 08 May 2005 13:41, qwweeeit at yahoo.it wrote:
> As you can see you can interact with kwrite from dcop.
> Unfortunately I don't have this module in my Python (2.3) nor I have
> been able to find it.

It's normally installed seperately from the main kde libraries - on gentoo 
it's a package called dcoppython, that might help you in your search if 
you're on a different distro.

james.
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From jjl at pobox.com  Fri May 13 16:29:19 2005
From: jjl at pobox.com (John J. Lee)
Date: 13 May 2005 20:29:19 +0000
Subject: Parsing HTML with JavaScript
References: <slrnd88pns.qsm.mtfulmer@tacobell.land>
Message-ID: <874qd6lvj4.fsf@pobox.com>

mtfulmer at tacobell.land writes:

> I am trying to extract some information from a few web pages, and I was
> using the HTMLParser module. It worked fine until it got to the
> javascript, at which it gave a parse error. Is there a good way to work
> around this or should I just preparse the file to remove the javascript
> manually? This is my first python program. 

sgmllib is very similar to HTMLParser, but doesn't break so easily
(but sgmllib has some problems with XHTML -- swings and roundabouts).

Or, try BeautifulSoup.


John


From b.ghose at gmail.com  Sun May  1 17:40:20 2005
From: b.ghose at gmail.com (Baishampayan)
Date: 1 May 2005 14:40:20 -0700
Subject: BitKeeper for Python?
References: <IOade.1185051$Xk.343206@pd7tw3no>
Message-ID: <1114983620.737219.291410@z14g2000cwz.googlegroups.com>

Hello John,
If you just want a repository for one project and you don't want to
admin the whole server [which is a job in itself], you can use
Sourceforge's CVS server. They'll also let you host the project on
their servers.
If you want to setup your own SCM, you can try Subversion, GNU Arch, or
if you are interested in distributed SCMs, you can try Monotone
http://www.venge.net/monotone/
IMO, you'll be better off using Sourceforge's CVS server.
Regards,
-bg-



From vincent at visualtrans.de  Thu May  5 10:33:39 2005
From: vincent at visualtrans.de (vincent wehren)
Date: Thu, 5 May 2005 16:33:39 +0200
Subject: a cx_Oracle ORA-01036 problem
References: <427a2b39_2@x-privat.org>
Message-ID: <d5das3$682$1@news2.zwoll1.ov.home.nl>

"Damjan" <gdamjan at gmail.com> schrieb im Newsbeitrag 
news:427a2b39_2 at x-privat.org...
| I'm using Python 2.4, cx_Oracle-4.1 on Linux with Oracle instant client
| 10.1.0.3. This is the sql string:
|
| SQL = """insert into D.D_NOTIFY values (:CARDREF, :BANKKEY, :OK1, :OK2 \
|        :DEBTEUR, :DEBTDEN, to_date(:INVOICE_DATE,'DD.MM.YY'),
|        to_date(:PAYMENT_DEADLINE,'DD.MM.YY'), :POINTS)"""
|
| And I'm trying to execute it as:
|        c = db.cursor()
|        c.execute(SQL, CARDREF=id, BANKKEY=dc_kluc, OK1=okd, OK2=okc,
|          DEBTEUR=iznos_eur, DEBTDEN=iznos_mkd, INVOICE_DATE=datum_g,
|          PAYMENT_DEADLINE=datum_d, POINTS=bodovi)

| And I get an ORA-01036 exception.
|
| I also have tried
|        args = dict(CARDREF=id, BANKKEY=dc_kluc, OK1=okd, OK2=okc,
|          DEBTEUR=iznos_eur, DEBTDEN=iznos_mkd, INVOICE_DATE=datum_g,
|          PAYMENT_DEADLINE=datum_d, POINTS=bodovi)
|        c = db.cursor()
|        c.execute(SQL, **args)


Shouldn't that be c.execute(SQL, args) (no **-unpacking of the dictionary)?

--

Vincent Wehren


| Same thing.
|
| Everything works If I use python string substituion, like this sql:
| SQL = """insert into D.D_NOTIFY values (%s,'%s','%s','%s','%s','%s', \
|        to_date('%s','DD.MM.YY'),to_date('%s','DD.MM.YY'),'%s')""" % fields
|
| Any ideas?
|
|
| -- 
| damjan 




From jdc at uwo.ca  Wed May 18 12:18:43 2005
From: jdc at uwo.ca (Dan Christensen)
Date: Wed, 18 May 2005 12:18:43 -0400
Subject: Representing ambiguity in datetime?
In-Reply-To: <%vxie.25534$VH2.13093@tornado.tampabay.rr.com>
References: <mailman.121.1116368416.8733.python-list@python.org>
	<5hvk81prupnpinq4ucspsikdqns5rmcaf0@4ax.com>
	<%vxie.25534$VH2.13093@tornado.tampabay.rr.com>
Message-ID: <87hdh08q3g.fsf@uwo.ca>

Ron Adam <rrr at ronadam.com> writes:

> So it seems using 0's for the missing day or month may be how to do it.

This doesn't allow more specific amounts of ambiguity.  I suggest
either a pair of dates, which represent the earliest and latest that
the event could have been (and are equal if there is no ambiguity),
or a date plus a number of days of uncertainty, i.e. 
21 June 2005 +- 5 days.

Dan


From jfine at pytex.org  Thu May 26 03:14:53 2005
From: jfine at pytex.org (Jonathan Fine)
Date: Thu, 26 May 2005 08:14:53 +0100
Subject: Writing a bytecode interpreter (for TeX dvi files)
Message-ID: <4295776D.2070601@pytex.org>

I'm writing some routines for handling dvi files.
In case you didn't know, these are TeX's typeset output.

These are binary files containing opcodes.
I wish to write one or more dvi opcode interpreters.

Are there any tools or good examples to follow for
writing a bytecode interpreter?

I am already aware of opcode.py and other modules in
Python Language Services, in the Library Reference.

Thanks.

-- 
Jonathan
http://texd.sourceforge.net



From roy at panix.com  Mon May  2 20:17:20 2005
From: roy at panix.com (Roy Smith)
Date: Mon, 02 May 2005 20:17:20 -0400
Subject: empty lists vs empty generators
References: <509534af.0505021514.5e49aa2@posting.google.com>
Message-ID: <roy-82FBC6.20172002052005@reader1.panix.com>

In article <509534af.0505021514.5e49aa2 at posting.google.com>,
 brian at mirror.org (Brian Roberts) wrote:

> I'm using using generators and iterators more and more intead of
> passing lists around, and prefer them.  However, I'm not clear on the
> best way to detect an empty generator (one that will return no items)
> when some sort of special case handling is required.

The best I can come up with is to depend on the fact that

for item in foo:
   pass

only defines item if foo yields any items.  Assuming item is not defined 
before you execute the for loop, you can check to see if it's defined after 
the loop, and use that to tell if foo was an empty list or generator.  
Here's a demo.  Unfortunately, I'm not sure if it's really any cleaner than 
your way (but at least it doesn't add any extraneous variables)


# Creates an iterator which yields n items.
class gen:
    def __init__(self, n):
        self.n = n

    def __iter__(self):
        for i in range(self.n):
            yield None

def checkEmpty(genOrList):
    for item in genOrList:
        pass

    try:
        item
        print "%s had items" % genOrList
    except NameError:
        print "%s was empty" % genOrList

checkEmpty(gen(0))
checkEmpty(gen(1))
checkEmpty([])
checkEmpty([1])

--------------

Roy-Smiths-Computer:play$ ./gen.py
<__main__.gen instance at 0x36c620> was empty
<__main__.gen instance at 0x36c620> had items
[] was empty
[1] had items


From fredrik at pythonware.com  Tue May 17 10:46:29 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 17 May 2005 16:46:29 +0200
Subject: \r functionality
References: <1116325048.303756.222070@z14g2000cwz.googlegroups.com>
Message-ID: <d6d032$f3k$1@sea.gmane.org>

"Jake" <jacob.hurst at gmail.com> wrote:

> in c and c++ there is a useful way to refresh an output line in printf
> and cout using \r meta command.

that's a control character that's printed to the terminal by printf/cout,
not a "C or C++ meta command"

to print the same character in Python, use the same character escape:

    print "\r", count,

(note that if this works or not depends on the terminal you're sending the
output to.  most ordinary terminals handle it just fine, but if you're sending
output to an IDE console window, it may not work as expected)

</F> 





From opengeometry at yahoo.ca  Wed May 18 15:48:32 2005
From: opengeometry at yahoo.ca (William Park)
Date: Wed, 18 May 2005 15:48:32 -0400
Subject: Comparing 2 similar strings?
Message-ID: <24a6d$428b9c10$d1b717f8$2300@PRIMUS.CA>

How do you compare 2 strings, and determine how much they are "close" to
each other?  Eg.
    aqwerty
    qwertyb
are similar to each other, except for first/last char.  But, how do I
quantify that?

I guess you can say for the above 2 strings that
    - at max, 6 chars out of 7 are same sequence --> 85% max

But, for
    qawerty
    qwerbty
max correlation is
    - 3 chars out of 7 are the same sequence --> 42% max

(Crossposted to 3 of my favourite newsgroup.)

-- 
William Park <opengeometry at yahoo.ca>, Toronto, Canada
ThinFlash: Linux thin-client on USB key (flash) drive
           http://home.eol.ca/~parkw/thinflash.html


From rbt at athop1.ath.vt.edu  Wed May 18 17:25:49 2005
From: rbt at athop1.ath.vt.edu (rbt)
Date: Wed, 18 May 2005 17:25:49 -0400
Subject: socket programming and port scans
Message-ID: <d6gbsu$no1$1@solaris.cc.vt.edu>

I don't fully understand sockets, I just know enough to be dangerous. 
The below is not detected by nmap, but is affected by iptables or ipsec. 
Can anyone explain why that is?

     s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
     s.bind((ip_param, port_param))
     while 1:
         s.listen(5)

I can connect to the socket server and even transmit data so I know it's 
there.

Thanks,
rbt


From bdesth.quelquechose at free.quelquepart.fr  Wed May 11 17:40:02 2005
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Wed, 11 May 2005 23:40:02 +0200
Subject: Python Documentation (should be better?)
In-Reply-To: <mailman.398.1115843305.29826.python-list@python.org>
References: <5C99C308457E6D4EA5448EA52A66004A675A6E@or.mxim.com>	<17026.26789.592527.975821@montanaro.dyndns.org>
	<mailman.398.1115843305.29826.python-list@python.org>
Message-ID: <428276e8$0$318$626a14ce@news.free.fr>

Ivan Van Laningham a ?crit :
> Hi All--
> The Python docs are not ideal.  I can never remember, for instance,
> where to find string methods (not methods in the string module, but
> methods with ''),

 >>> dir('')
['__add__', '__class__', '__contains__', '__delattr__', '__doc__', 
'__eq__', '__ge__', '__getattribute__', '__getitem__', '__getnewargs__', 
'__getslice__', '__gt__', '__hash__', '__init__', '__le__', '__len__', 
'__lt__', '__mod__', '__mul__', '__ne__', '__new__', '__reduce__', 
'__reduce_ex__', '__repr__', '__rmod__', '__rmul__', '__setattr__', 
'__str__', 'capitalize', 'center', 'count', 'decode', 'encode', 
'endswith', 'expandtabs', 'find', 'index', 'isalnum', 'isalpha', 
'isdigit', 'islower', 'isspace', 'istitle', 'isupper', 'join', 'ljust', 
'lower', 'lstrip', 'replace', 'rfind', 'rindex', 'rjust', 'rstrip', 
'split', 'splitlines', 'startswith', 'strip', 'swapcase', 'title', 
'translate', 'upper', 'zfill']

HTH


From R.Brodie at rl.ac.uk  Fri May 27 07:10:08 2005
From: R.Brodie at rl.ac.uk (Richard Brodie)
Date: Fri, 27 May 2005 12:10:08 +0100
Subject: struct unpack newline
References: <1117189007.980813.182830@g14g2000cwa.googlegroups.com>
Message-ID: <d76v6g$ui5$1@blackmamba.itd.rl.ac.uk>


<grant at idscape.co.za> wrote in message news:1117189007.980813.182830 at g14g2000cwa.googlegroups.com...

> except when line[86:90] contains "carriage-return" "linefeed"
> which are valid binary packed values.

You probably don't want to be reading binary data a
line at a time, if that's what you're doing.




From exarkun at divmod.com  Thu May 26 15:43:25 2005
From: exarkun at divmod.com (Jp Calderone)
Date: Thu, 26 May 2005 19:43:25 GMT
Subject: os independent way of seeing if an executable is on the path?
In-Reply-To: <429564a4@usenet01.boi.hp.com>
Message-ID: <20050526194325.559.1978971544.divmod.quotient.10482@ohm>

On Thu, 26 May 2005 11:53:04 -0700, Don <donald.welch at nospam.hp.com> wrote:
>Steven Bethard wrote:
>
>> This has probably been answered before, but my Google skills have failed
>> me so far...
>>
>> Is there an os independent way of checking to see if a particular
>> executable is on the path?  Basically what I want to do is run code like:
>>      i, o, e = os.popen3(executable_name)
>> but I'd like to give an informative error if 'executable_name' doesn't
>> refer to an executable on the path.
>>
>> [snip]
>>
>> Thanks for the help,
>>
>> STeVe
>
>I wrote this 'which' function for Linux, but I think if you changed the ':'
>character, it would work on Windows (I think its a ';' on Windows, but I
>can't remember):
>
>def which( command ):
>    path = os.getenv( 'PATH' ).split( ':' )
>    found_path = ''
>    for p in path:
>        try:
>            files = os.listdir( p )
>        except:
>            continue
>        else:
>            if command in files:
>                found_path = p
>                break
>
>    return found_path
>

Here's the version that comes with Twisted:

  import os, sys, imp

  def which(name, flags=os.X_OK):
      """Search PATH for executable files with the given name.

      @type name: C{str}
      @param name: The name for which to search.

      @type flags: C{int}
      @param flags: Arguments to L{os.access}.

      @rtype: C{list}
      @param: A list of the full paths to files found, in the
      order in which they were found.
      """
      result = []
      exts = filter(None, os.environ.get('PATHEXT', '').split(os.pathsep))
      for p in os.environ['PATH'].split(os.pathsep):
          p = os.path.join(p, name)
          if os.access(p, flags):
              result.append(p)
          for e in exts:
              pext = p + e
              if os.access(pext, flags):
                  result.append(pext)
      return result

Jp


From rkern at ucsd.edu  Sat May  7 09:18:56 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Sat, 07 May 2005 06:18:56 -0700
Subject: Encryption with Python?
In-Reply-To: <009901c552fb$220132e0$0201a8c0@mcuf7>
References: <1115324411.952821.150780@o13g2000cwo.googlegroups.com><001301c552db$dd19d3e0$0201a8c0@mcuf7>	<d5i0as$ejd$1@sea.gmane.org>
	<009901c552fb$220132e0$0201a8c0@mcuf7>
Message-ID: <d5ier2$hqa$1@sea.gmane.org>

Anthra Norell wrote:
> Thanks a lot for the feedback. This is certainly a great learning
> experience. It's a fascinating topic too. Without wishing to annoy, I'd be
> interested in knowing more. I insert questions below.
> 
> ----- Original Message -----
> From: "Robert Kern" <rkern at ucsd.edu>
> To: <python-list at python.org>
> Sent: Saturday, May 07, 2005 11:11 AM
> Subject: Re: Encryption with Python?
> 
> 
> 
>>Anthra Norell wrote:
>>
>>>I rolled my own for relatively short sequences, like passwords. The key
> 
> is
> 
>>>an integer. To decrypt use the negative encryption key. I consider the
>>>encryption unbreakable, as it is indistinguishable from a random
> 
> sequence.
> 
>>>Frederic
>>>
>>>###
>>>
>>>def crypt (sequence, key):
>>>   import random
>>>   sign = (key > 0) * 2 - 1
>>>   random.seed (abs (key * sign))
>>>   s = ''
>>>   for i in xrange (len (sequence)):
>>>      r = random.randint (0, 255)
>>>      s += chr ((ord (sequence [i]) + r * sign) % 256)
>>>   return s
>>
>>The mind boggles.
>>
>>You do realize that if I have two ciphertexts encrypted with the same
>>key, I can subtract them? Then I have a sequence, that while not
>>immediately readable, is just a straightforward combination of the two
>>plaintexts without any encryption.
> 
> How do you know the same key was used?

I don't necessarily, but if the same key *is* used, I'll know. The 
differences of the ciphertexts will have distinctly non-random 
characteristics (well, assuming the plaintexts aren't one-time pads 
themselves).

> What if the messages aren't the same length?

Then I just look at the common portion.

> How does one reconstruct either or both of two messages from their
> difference?

Analyzing patterns, frequencies, and also using prior knowledge I may 
know or guess about the contents. This is only slightly worse (for the 
attacker) than tackling a straight substitution cipher.

>>This function is also vulnerable to a chosen-plaintext attack. The
>>underlying PRNG is definitely not suitable for cryptographic
>>applications. The documentation even says so!
> 
> What is a plain-text attack?

"Chosen-plaintext," please.

> Is it you give me a plain text. I encrypt it
> using the same keys and hand you the result?

More or less.

> Would I comply with the
> request?

Depending on how your cryptosystem is deployed, you may not have a 
choice. A cryptosystem ought to be resistent to chosen-plaintext attacks 
regardless of how you intend to deploy it.

>>http://docs.python.org/lib/module-random.html
>>"However, being completely deterministic, it is not suitable for all
>>purposes, and is completely unsuitable for cryptographic purposes."
> 
> The logic escapes me if it is understood to mean that cryptography, in order
> to be usable, has to be indeterministic.

The two characteristics "completely deterministic" and "unsuitable for 
cryptographic purposes" are only mildly related. One *definitely* 
wouldn't use any PRNG to generate keying material. You should rely on 
physical sources of randomness. Most modern OSes have some way to access 
reliable entropy from your machine. Unices usually have this as 
/dev/random. But that's a separate issue.

Additionally, one should not use the Mersenne Twister PRNG, which is 
what Python uses, as the PRNG for the stream cipher. Given a particular 
value or series of values, it is possible to determine one's position in 
the PRNG sequence and can, in essence derive the key. Some techniques 
can be used to hide actual current state of the PRNG like applying a 
cryptographic hash to the value from the PRNG. However, it's easier and 
far better to just use a cryptographically strong PRNG from the start.

> If, however, it is meant to suggest
> that it is the reversible, direct one-on-one relation between all the
> characters of a plain text and its encryption that falls short of
> state-of-the-art technology, I'd have no problem with that. That doesn't
> mean, however, that an exercise is required to measure up to
> state-of-the-art standards in order to be taken seriously. I do invent my
> own solutions for simple problems.

This is not a simple problem.

But fortunately, there *is* a relatively simple answer. Besides Paul 
Rubin's p3.py (which to my limited ability to determine is probably 
"best-of-breed" for the limits imposed upon it), there is a very 
simply-coded stream cipher that *is* cryptographically strong if the 
appropriate details are observed. It's called RC4 (or ARCFOUR). A 
reasonably good cryptosystem built around that cipher is called 
Ciphersaber-2.

http://ciphersaber.gurus.com/cryptanalysis.html

There are dozens of implementations floating around, but it's 
ridiculously easy to code up by yourself.

> I find it more challenging than stalking
> other people's solutions how ever superior and typically it also saves me
> time. It is not my ambition to excel in any field, nor to flaunt my
> erudition. It is my ambition to satisfy the requirements of a given task.
> And this, I think, my solution does. I can be wrong and if so, I'd
> appreciate being proven wrong. I have now received well-meaning advice for
> which I am grateful. But I haven't been proven wrong.

You haven't proved your claim that your cipher is "unbreakable." Your 
notion of "unbreakable" is also flawed; "indistinguishable from 'random' 
sequences" is only one part of cryptosystem security. For that matter, 
you haven't proven that the ciphertexts produced are "indistinguishable 
from random sequences." Note the plural. It's important.

You have a positive obligation to back your claim. I've pointed you to 
two obvious attacks that can be made against your system and also to 
resources that you can read to improve your knowledge of the issues. I 
*don't* have an obligation to spend more of my time meeting your 
arbitrary challenge. My reluctance to do so is not support for your claim.

> I claim that my
> solution satisfies the requirements of the task at hand and challenge anyone
> to prove the contrary. You can meet the challenge by deciphering the
> following tiny message, knowing now the encryption method, which in practice
> would not be known

Bull. And irrelevant.

Kerckhoffs' Principle
"A cryptosystem should be secure even if everything about the system, 
except the key, is public knowledge."

http://en.wikipedia.org/wiki/Kerckhoffs'_principle

> and, as it seems, would hardly be suspected by
> deciphering experts for its amateurishness.

This is not something to rely upon.

>>Do yourself a favor and don't try to roll your own cryptographic
>>functions. Do everyone else a favor and don't call something
>>"unbreakable" unless you actually have the domain expertise to make that
>>determination.
> 
> Here's the challenge. Prove this breakable
> 
> '\x10\x88d\x1d\xba\xa1\xdcK\x05w\x02/s\xa7Q0\xeb8\xb6Gx\xef\xcb\x1e=\xf5\x7f
> \x9bI\xcb(\x87>\xa5\x04\xc1soF\xfd\xc6\xc6\xd9|\x971\xdb\xcdT\tw#\x86a\xdc\x
> b8P\xfb=n\xda\x80\x9f\x84m\x12\x98\x98\xca=o\x0b\x8e\x08O\xb7\x0b\x04SC\x96\
> xc7\xab*\x0b\x996\x06\x86\x83(\x8dQ\x9eG\x8f$\xb2x)\xa9fv\x0c1B\x9b\r\xde\xf
> fc\x08'
 >
> When you give up we may try a plain-text attack. Okay?

I have better things to do with my time. It's not me that needs to prove 
anything. You came here and made a claim. I am asking you to back it up. 
Until you do so, you don't have much right to challenge me to prove 
anything.

>>And do read _Practical Cryptography_.
> 
> I certainly will.

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From mensanator at aol.com  Sun May  1 13:21:42 2005
From: mensanator at aol.com (mensanator at aol.com)
Date: 1 May 2005 10:21:42 -0700
Subject: My personal candidate for QOTW (was: Python interpreter in
	Basic or a Python-2-Basic translator.)
In-Reply-To: <q1efk2-gd7.ln1@lairds.us>
References: <1114953507.031865.244920@g14g2000cwa.googlegroups.com>
	<q1efk2-gd7.ln1@lairds.us>
Message-ID: <1114968102.673519.215780@o13g2000cwo.googlegroups.com>


Cameron Laird wrote:
> In article <1114953507.031865.244920 at g14g2000cwa.googlegroups.com>,
> Engineer <pcolsen at comcast.net> wrote:
> 			.
> 			.
> 			.
> >The security 'droids have decided that since the MS Office Suite is
a
> >"standard" application then software written in MS Office VBA must
be
> >"safe."  Any other development environments (such as Java, Perl,
> 			.
> 			.
> 			.

Obviously, this is a new usage of "safe" with which I have
prviously been unaware.



From qwweeeit at yahoo.it  Sun May 15 11:59:02 2005
From: qwweeeit at yahoo.it (qwweeeit at yahoo.it)
Date: 15 May 2005 08:59:02 -0700
Subject: Mandrake 10.1 and Python 2.3.4
In-Reply-To: <AsGhe.3663$E7.3600@news-server.bigpond.net.au>
References: <AsGhe.3663$E7.3600@news-server.bigpond.net.au>
Message-ID: <1116172742.477298.116930@g14g2000cwa.googlegroups.com>

Hi Joal,
I can only tell you that in my Linux Mandrake 10.1 (Community Edition),
all is ok:
Python 2.3.4 (#2, Aug 19 2004, 15:49:40)
[GCC 3.4.1 (Mandrakelinux (Alpha 3.4.1-3mdk)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import site
>>> dir (site)
['_Helper', '_Printer', '__builtin__', '__builtins__', '__doc__',
'__file__', '__name__', '_dirs_in_sys_path', '_init_pathinfo', '_test',
'addpackage', 'addsitedir', 'encoding', 'here', 'makepath', 'os',
'prefixes', 'sitedirs', 'sys']
>>>
This can't exclude that the error is in Mandrake's site (if you have
the Official Edition),  but I can't help you further because I am not
an expert.
Bye.



From max2 at fisso.casa  Thu May  5 13:04:07 2005
From: max2 at fisso.casa (max(01)*)
Date: Thu, 05 May 2005 17:04:07 GMT
Subject: python and glut
In-Reply-To: <1115236689.318521.111420@z14g2000cwz.googlegroups.com>
References: <kp7ee.1331058$35.49670814@news4.tin.it>
	<1115236689.318521.111420@z14g2000cwz.googlegroups.com>
Message-ID: <bmsee.1336210$35.49849772@news4.tin.it>

Lonnie Princehouse wrote:
> See if you can run `glxgears`, and read the output of `glxinfo`.   If
> neither of those work, you will probably have better luck on a debian
> or XFree86/xorg forum than on c.l.py
> 

your hints were helpful anyway. thanks!

ok, i uncommented the line:

Load       "glx"

in my /etc/X11/XF86Config file.

now glxgears seems to work...

except for the following message:

Xlib:  extension "XFree86-DRI" missing on display ":0.0".

can you give some more help? (sorry again for being offtopic)

max


From Sebastien.Boisgerault at gmail.com  Mon May  2 07:51:28 2005
From: Sebastien.Boisgerault at gmail.com (=?iso-8859-1?q?S=E9bastien_Boisg=E9rault?=)
Date: 2 May 2005 04:51:28 -0700
Subject: doctest's ELLIPSIS
References: <1114789524.038880.312510@g14g2000cwa.googlegroups.com>
	<1114790657.829547.59680@g14g2000cwa.googlegroups.com>
	<1114792468.495670.98150@z14g2000cwz.googlegroups.com>
	<1114793929.180986.195870@o13g2000cwo.googlegroups.com>
Message-ID: <1115034688.315872.31320@z14g2000cwz.googlegroups.com>

(Forwarded from Python bug tracker)

[ 1192554 ] doctest's ELLIPSIS and multiline statements

Tim Peters:
[...]
doctest has few syntax requirements, but the
inability to start an expected output block with "..." has
always been one of them, and is independent of the
ELLIPSIS gimmick.  I doubt this will change, in part because
the complications needed to "do something about it" are
probably pig ugly, in part because it's so rare a desire, and
in part because there are easy ways to work around it (like
arranging for the expected output to start with something
other than '...').



From peter at engcorp.com  Wed May 11 09:46:26 2005
From: peter at engcorp.com (Peter Hansen)
Date: Wed, 11 May 2005 09:46:26 -0400
Subject: Pipes of binaries - IPC::Run
In-Reply-To: <mailman.328.1115794015.29826.python-list@python.org>
References: <mailman.328.1115794015.29826.python-list@python.org>
Message-ID: <IPqdne9VeJN4kR_fRVn-1w@powergate.ca>

Swaroop C H wrote:
> Is there a Python equivalent of Perl's IPC::Run module [
> http://search.cpan.org/dist/IPC-Run/lib/IPC/Run.pm ] ?

I don't know Perl, and don't plan to read all of that page you 
referenced, but judging from the subject line and the half-sentence 
description near the top of that page, you are looking for:

os.system
os.popen
popen2 (module)
subprocess (module, in 2.4)

Read about each and, preferring subprocess (as the most recent), try 
them out for yourself.

-Peter


From mwm at mired.org  Sat May 21 12:46:32 2005
From: mwm at mired.org (Mike Meyer)
Date: Sat, 21 May 2005 11:46:32 -0500
Subject: first release of PyPy
References: <mailman.264.1116625088.8733.python-list@python.org>
	<1116629407.638782.145950@g47g2000cwa.googlegroups.com>
	<1116644536.741250.249860@g44g2000cwa.googlegroups.com>
	<mailman.279.1116649250.8733.python-list@python.org>
	<1116653460.808204.74460@g43g2000cwa.googlegroups.com>
	<87mzqpytep.fsf@wilson.rwth-aachen.de>
	<mailman.285.1116663550.8733.python-list@python.org>
Message-ID: <86fywgy1av.fsf@guru.mired.org>

Shane Hathaway <shane at hathawaymix.org> writes:
> Torsten Bronger wrote:
> Even if things don't turn out that way, note that each generation of
> programming languages builds on its predecessors, and PyPy could help
> bootstrap the next generation.  Assemblers first had to be written in
> machine code; when it was possible to write assemblers in assembly,
> people started writing complex grammars and came up with C.  C compilers
> first had to be written in assembly; when it was possible to write C
> compilers in C, people started inventing high level languages.  Now
> people are experimenting with high level compilers written in high level
> languages.  Where will this pattern lead?  Who knows. :-)

Your history of programming languages skips so many steps that it's
misleading.

For instance, C didn't arrive ab initio. It was preceeded by B, which
was a derivative of BCPL. From the history at <URL:
http://www.cs.bell-labs.com/who/dmr/chist.html >, it seems that B
slowly evolved into C. B started life as an interpreted language, with
a compiler that generated pseudo-code. The first B compiler was
written in TMG, which was a high-level language designed for creating
compilers - well, sorta. Based in that history, it seems likely that
the first program that compiled a language called C was written in B.

I'm used to seeing the term "high level languages" used for languages
a lot like C, to distinguish them from assembler. See <URL:
http://www.computerhope.com/jargon/h/highll.htm > for one
definition. "Very high level languages" used to be popular, but I
haven't seen it used much. At least one person classifies Python as
such <URL: http://www.everything2.com/index.pl?node_id=735359 >.  In
any case, powerful dynamic languages - of which python is an example -
date back to LISP. The first LISP compiler in LISP almost certainly
predates C.

Basically, there's a *lot* of history in programming languages. I'd
hate to see someone think that we went straight from assembler to C,
or that people didn't understand the value of dynamic languages very
early.

        <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From lucrodsilva at gmail.com  Thu May  5 17:17:38 2005
From: lucrodsilva at gmail.com (Luciano Rodrigues da Silva)
Date: 5 May 2005 14:17:38 -0700
Subject: Py2Exe security
In-Reply-To: <1115249595.645525.233470@z14g2000cwz.googlegroups.com>
References: <1115121780.404491.84240@f14g2000cwb.googlegroups.com>
	<1115129613.564775.21660@g14g2000cwa.googlegroups.com>
	<117f3lk633rbs87@corp.supernews.com> <d5841n$ocp$1@bagan.srce.hr>
	<1115249595.645525.233470@z14g2000cwz.googlegroups.com>
Message-ID: <1115327858.725472.243630@f14g2000cwb.googlegroups.com>

I think that encrypt with public/private key will be a solution in your
case. I don't know if python has a module to do this kind of encrypt.



From vincent at visualtrans.de  Tue May  3 13:52:52 2005
From: vincent at visualtrans.de (vincent wehren)
Date: Tue, 3 May 2005 19:52:52 +0200
Subject: trouble with lists
References: <1115142163.472256.205930@o13g2000cwo.googlegroups.com>
Message-ID: <d58dpl$ogc$1@news2.zwoll1.ov.home.nl>


<anandr86 at gmail.com> schrieb im Newsbeitrag 
news:1115142163.472256.205930 at o13g2000cwo.googlegroups.com...
| I'm new to python. I tried doing this
|
| >>> x = [[]] * 3
| >>> print x
| [ [] [] [] ]
| >>> x[0].append( 2 )
| [ [2] [2] [2] ]
|
| I confused with the last line output. I actually expected something
| like
|
| [ [2] [] [] ]
|
| Can anyone give me an explanation. help!!

The library reference can!
See http://docs.python.org/lib/typesseq.html

Look at the section "notes (2)":

"""Values of n less than 0 are treated as 0 (which yields an empty sequence 
of the same type as s). Note also that the copies are shallow; nested 
structures are not copied. This often haunts new Python programmers; 
consider:

>>> lists = [[]] * 3
>>> lists
[[], [], []]
>>> lists[0].append(3)
>>> lists
[[3], [3], [3]]"""etc.
--
Vincent Wehren





From enderkanchou at gmail.com  Wed May 18 00:23:28 2005
From: enderkanchou at gmail.com (Anthony)
Date: 17 May 2005 21:23:28 -0700
Subject: python and os.system() failure
References: <mailman.48.1114820047.14961.python-list@python.org>
	<d53q3v$big$1@gemini.csx.cam.ac.uk>
	<1115075139.022119.321880@l41g2000cwc.googlegroups.com>
	<d56dbo$12d$1@gemini.csx.cam.ac.uk>
Message-ID: <1116390208.730020.146480@g14g2000cwa.googlegroups.com>

Michael Hoffman wrote:
>
> Why aren't you using NamedTemporaryFile instead? Using mkstemp adds a

> lot of complications that are usually unnecessary.

I believe I originally used mktemp(), but forgot how I learned that I
should use mkstemp() instead. I originally wrote the script over 1.5
years ago. =)
I may have been afraid of the "deleted when closed" at the time, but
now that really isn't an issue.

> > I will try to explicitly call a close() or whatever the syntax is
to
> > finalize the object to deletion by garbage collection.
>
> Files created with mkstemp are neither closed nor deleted when they
are
> finalized. I don't see how GC comes into it either.

Ah, that may explain it. Python.org did not say that mkstemp() is
outside of close or gc. I tried to both close and call gc at various
intervals, but, obviously, neither affected the running of the script.

Thanks alot, I think this will help. 

--
Anthony



From tnaran at no-more-virii-please.direct.ca  Tue May 24 22:37:44 2005
From: tnaran at no-more-virii-please.direct.ca (Travers Naran)
Date: Wed, 25 May 2005 02:37:44 GMT
Subject: Counting occurences of words in a list of strings
Message-ID: <YxRke.10544$on1.9738@clgrps13>

Here's the basic idea.  I have a dictionary of substrings (the substrings 
stored as keys).  I have a list of strings.  I want to find out, for each 
word in the dictionary, how many times the substring occurs non-overlapping 
occurrences there are in the list of strings.  This is the best I could 
come up with:

         for j in self.dict.keys():
             c = 0
             for i in tc.strings:
                 c += i.count(j)
             self.dict[j]['count'] += c

I tried Boyer-Moore-Horspool as someone else suggested in the group, but it 
was even slower (probably because of the time spent setting up the 
pattern).  Even when I split the algorithm in two, doing the set-up before 
the inner loop and only testing the pattern in the inner loop, it was still 
slow.

So, am I doing this the optimal way or am I overlooking something _really_ 
simple to do?

Statistics on the data:
The dictionary has 3000+ entries in it.
There are several thousand strings.
The strings average 10-26 characters in length.


From vmlinuz at abisen.com  Tue May  3 12:10:23 2005
From: vmlinuz at abisen.com (Anand S Bisen)
Date: Tue, 03 May 2005 11:10:23 -0500
Subject: distributing scripts
Message-ID: <4277A26F.50303@abisen.com>

Hello,

What is a good way to distributing python scripts as a package. Since
lately i am facing lots of issues with my python scripts not being able
to run properly due to either (old python 2.2 at the client machine) or
missing module. Is there a way by which i can solve these issues
revolving around my scripts ???

thanks

Anand


From roccomoretti at hotpop.com  Mon May 30 11:42:24 2005
From: roccomoretti at hotpop.com (Rocco Moretti)
Date: Mon, 30 May 2005 10:42:24 -0500
Subject: first release of PyPy
In-Reply-To: <1117300983.547630.252310@g44g2000cwa.googlegroups.com>
References: <mailman.264.1116625088.8733.python-list@python.org>
	<1116629407.638782.145950@g47g2000cwa.googlegroups.com>
	<mailman.9.1116831944.18027.python-list@python.org>
	<d6sn2f$18d$1@news.doit.wisc.edu>
	<mailman.29.1116868886.18027.python-list@python.org>
	<1116880764.260884.286720@g49g2000cwa.googlegroups.com>
	<42934634.5060105@gmx.de>
	<b322b4e605052411071a5c2606@mail.gmail.com>
	<mailman.68.1116961629.18027.python-list@python.org>
	<1117116529.063166.286590@g43g2000cwa.googlegroups.com>
	<1117300983.547630.252310@g44g2000cwa.googlegroups.com>
Message-ID: <d7fc8u$p02$1@news.doit.wisc.edu>

Kay Schluehr wrote:
> Anton Vredegoor wrote:
> 
> 
>>I'm not involved in PyPy myself but this would seem a logical
>>possibility. To go a step further, if the compiler somehow would know
>>about the shortest machine code sequence which would produce the
>>desired effect then there would be no reason to limit onself to only
>>those relatively inefficent standard code sequences that are inside
>>system dll's.
> 
> 
> Are You shure that this problem is effectively solvable in any
> language? Since You did not precise Your idea I'm not shure whether You
> want to solve the halting-problem in PyPy or not ;)

I'm always amazed at how many people take the intractableness of the 
halting problem as a reason to not even try. Sure, you can't tell if an 
*arbitrary* program halts or not, but there are many where you can. 
(Assuming a perfect Python Interpreter):

c = 5 + 6

halts.

c = 5
while 1:
     c = c + 6

doesn't.

A trip through the Zope internals may be a little harder to decide. But 
one might argue that code that does not give a clear "yes, it halts" is 
poorly written, and should be rewritten to be better behaved.

At any rate, Anton isn't talking about solving the halting problem, but 
is hinting more along the lines of introspecting the code and, for 
example, substituting a bubble sort for a quick sort when the specific 
circumstances determine that it would be quicker. Granted, giving the 
"best" code sequence would be tough to impossible to determine, but a 
"better" code sequence would still make people happy.


From frederik_BCOL at vanrenterghem.biz  Wed May  4 16:36:40 2005
From: frederik_BCOL at vanrenterghem.biz (Frederik Vanrenterghem)
Date: Wed, 04 May 2005 22:36:40 +0200
Subject: ssl-enabled python for arm linux
Message-ID: <pan.2005.05.04.20.36.23.384938@vanrenterghem.biz>

Hi,

I'm trying to get libgmail to run on my iPAQ running Familiar
Linux. I've installed the arm-linux Python distribution from 
http://www.vanille.de/projects/python.spy

As it doesn't appear to have been compiled with OpenSSL, I have copied
_ssl.so from the Debian ARM repository, but now I'm encountering errors in
the application I try to run - errors I'm not seeing when running the app
on my Debian box.

My question is: was it ok to take _ssl from the Debian arm archive, and
if it was, should I take anything else as well to get a Python able to
access https pages?

Thx,

-- 
       Frederik Vanrenterghem                   This sentence no verb.
       http://vanrenterghem.biz         
       GPG Fingerprint:                 
       966B 0E4B 25C1 CC04 E2CB         
       8D4C 117F 6469 8925 BDE0         



From dformosa at dformosa.zeta.org.au  Sun May 15 22:33:49 2005
From: dformosa at dformosa.zeta.org.au (David Formosa (aka ? the Platypus))
Date: Mon, 16 May 2005 02:33:49 GMT
Subject: 20050111: list basics
References: <1105512773.543336.29930@c13g2000cwb.googlegroups.com>
	<slrncu9nhc.ucb.abigail@alexandra.abigail.nl>
Message-ID: <slrnd8g0vv.4ns.dformosa@dformosa.zeta.org.au>

On 12 Jan 2005 08:22:04 GMT, Abigail <abigail at abigail.nl> wrote:

[...]

> Wrong. Perl functions don't take memory addresses. Perl doesn't allow
> the programmer to do direct memory access.

Perl's pack function will allow you to do direct memory access if you
ask it to via the "p" and "P" templates.

-- 
Please excuse my spelling as I suffer from agraphia. See
http://dformosa.zeta.org.au/~dformosa/Spelling.html to find out more.
Free the Memes.


From pinard at iro.umontreal.ca  Thu May 12 11:53:16 2005
From: pinard at iro.umontreal.ca (=?iso-8859-1?Q?Fran=E7ois?= Pinard)
Date: Thu, 12 May 2005 11:53:16 -0400
Subject: How "return" no return ?
In-Reply-To: <3ehaurF34ak0U1@individual.net>
References: <3ehaurF34ak0U1@individual.net>
Message-ID: <20050512155316.GA10734@phenix.progiciels-bpi.ca>

[Ximo]

> I want that the return sentence don't return anything, how can I do
> it?

`return' always return something (if we except the case of generators).
Used without arguments, it returns None, as you discovered already.
If a function "falls through" its end, None is implicitely returned.

A function always have a value.  I do not understand the need of "not
returning anything".  What do you mean?  What is the real need?

> [...] pass don't run too.

`pass' surely runs.  However, `pass' is not a `return' statement.

-- 
Fran?ois Pinard   http://pinard.progiciels-bpi.ca


From steven.bethard at gmail.com  Sun May 22 23:45:19 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Sun, 22 May 2005 21:45:19 -0600
Subject: How come print cannot be assigned to a variable?
In-Reply-To: <d6r65o$22q$1@news2.netvision.net.il>
References: <1116600042.622872.49850@g14g2000cwa.googlegroups.com>
	<d6r65o$22q$1@news2.netvision.net.il>
Message-ID: <r6idnT4k_P1NzAzfRVn-tw@comcast.com>

John Doe wrote:
> If you need a function that prints stuff, consider these two examples:
> [snip]
> PrintFunc = lambda x: print x

py> printfunc = lambda x: print x
Traceback (  File "<interactive input>", line 1
     printfunc = lambda x: print x
                               ^
SyntaxError: invalid syntax

See Inappropriate use of Lambda on the Python Wiki[1].  This is also a 
horrible idea as it means you can only print a single item:

py> print 1, 2, 3
1 2 3
py> def write(x):
...     print x
...
py> write(1, 2, 3)
Traceback (most recent call last):
   File "<interactive input>", line 1, in ?
TypeError: write() takes exactly 1 argument (3 given)
py> def write(*args):
...     print args
...
py> write(1, 2, 3)
(1, 2, 3)

The print statement has special spacing behavior.  You could perhaps 
approximate it with something like:

py> def write(*args):
...     for arg in args:
...         print arg,
...     print
...
py> write(1, 2, 3)
1 2 3

But why go to all this effort?

STeVe

[1] http://wiki.python.org/moin/DubiousPython


From qwweeeit at yahoo.it  Sat May 21 14:23:02 2005
From: qwweeeit at yahoo.it (qwweeeit at yahoo.it)
Date: 21 May 2005 11:23:02 -0700
Subject: ANN: Veusz 0.6 - a scientific plotting package
In-Reply-To: <pan.2005.05.19.21.18.37.210403@gmail.com>
References: <pan.2005.05.19.21.18.37.210403@gmail.com>
Message-ID: <1116699782.367084.242100@g47g2000cwa.googlegroups.com>

Hi Jeremy,
I am interested in collaborating to your project, but first of all I
must install Veusz and see what is the feeling I get.  I'm almost a
newbie in Python but I'm an old programmer and have quite a lot of
experience in designing scientific software. For example I know very
well contour plots also if the alghorithm I used can now be  a little
out-dated (some year ago  it was a flash in C...).
Another reason to be tempted in this adventure is the fact that your
choice is exactly mine: Python and Qt  (and besides that I can learn to
use OO ... at last!)
Bye.



From dave at pythonapocrypha.com  Sat May 21 11:32:38 2005
From: dave at pythonapocrypha.com (Dave Brueck)
Date: Sat, 21 May 2005 09:32:38 -0600
Subject: Is Python suitable for a huge, enterprise size app?
In-Reply-To: <7xacmpgxn1.fsf@ruckus.brouhaha.com>
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>	<1116432325.497438.64580@g49g2000cwa.googlegroups.com>	<1116433218.495131.71260@g49g2000cwa.googlegroups.com>	<1116443474.565264.176640@g44g2000cwa.googlegroups.com>	<7xd5rn93zi.fsf@ruckus.brouhaha.com>	<mailman.210.1116513794.8733.python-list@python.org>	<7x1x81d5bx.fsf@ruckus.brouhaha.com>	<mailman.262.1116623235.8733.python-list@python.org>
	<7xacmpgxn1.fsf@ruckus.brouhaha.com>
Message-ID: <428F5496.7050704@pythonapocrypha.com>

Paul Rubin wrote:
> Dave Brueck <dave at pythonapocrypha.com> writes:
> 
>>>What do you use for HTTPS?
>>
>>m2crypto (plus some patches to make asynchronous SSL do what we needed).
> 
> 
> That seems to be a nice piece of code, but it's still at version 0.13;

Version numbers are fairly relative, though. In another project we're using some 
proprietary, closed source libraries (unrelated to crypto) that are version 3 
and they seem buggier and less stable than m2crypto.

And don't get me started on Microsoft products (we've been using DirectShow *9* 
in some stuff, and due to bugs in DirectShow we were completely and utterly 
screwed despite what the documentation said; things just didn't work as they 
should, and Microsoft has confirmed that it's a bug that will be fixed in some 
future release - so we had to backtrack, ripping out code that should work just 
fine, and take another stab at getting DirectShow to cooperate). Version NINE 
(supposedly).

> if something goes wrong, are you sure you want to explain that you
> were using beta-test software to protect your customers' production
> financial transactions?

lol - what? We're not doing any financial transactions with it (IOW - we 
evaluated m2crypto for what we needed to do, and it's a good fit - that we 
didn't evaluate it in terms of what we don't need it to do doesn't bother me).

Having said that - I think we probably *would* use it for production financial 
transactions - but that's more a matter of closed vs. open source than Python vs 
not.

Besides, do you really think that, if something went wrong, you'd in the end 
have some meeting where you explain to your customer that you were using beta 
software? Of course not - it just doesn't work that way. Either they won't care 
and will drop you because of the problem (regardless of the source) or they want 
some broad details.

> There's also been some traffic on the
> python-crypto list about Zope encountering memory leaks with it.

Ok... so? I mean, if there's a memory leak, and it's hurting us, we have 
options: we can go look in the source code, we can make Zope reboot itself 
often, we can hire somebody to fix it, we can see if the author wants to give us 
a support contract, etc.

Memory leaks aren't exactly unique to Python - according to bugs.sun.com, there 
are currently 382 *open* bugs related to memory leaks in the JDK alone. If 
you're using Java in your "huge, enterprise size app" and get bit by one of 
those bugs, and if you're not a big enough company to get some 
ridiculously-priced support contract from Sun, what are your options? Again, 
this seems more like an open-vs-closed source issue, but to me it's another 
reason why I'd feel uncomfortable using Java in mission critical work.

-Dave


From roy at panix.com  Thu May 19 08:58:16 2005
From: roy at panix.com (Roy Smith)
Date: Thu, 19 May 2005 08:58:16 -0400
Subject: Is Python suitable for a huge, enterprise size app?
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>
	<jmbsl2-opn.ln1@lairds.us>
	<1116442276.918194.194110@g44g2000cwa.googlegroups.com>
	<mailman.163.1116443300.8733.python-list@python.org>
	<1116450537.626601.251990@g49g2000cwa.googlegroups.com>
Message-ID: <roy-285E4A.08581619052005@reader1.panix.com>

"George Sakkis" <gsakkis at rutgers.edu> wrote:
> Another issue that hasn't been mentioned so far is staffing. You can
> find java programmers and software engineers a dime dozen, but for
> python it will be harder.

Yes, there are a lot more people out there who put Java on their resume 
than put Python on their resume.  Most of those so-called Java programmers 
write total crap.  Of course, there's a lot of crap written in Python too.  
But since there're a lot more Java programmers out there, it stands to 
reason that there's a lot more crappy Java programmers too.

It's a lot easier to teach a good programmer Python than it is to teach a 
crappy programmer good software engineering skills.


From fredrik at pythonware.com  Fri May  6 06:13:27 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Fri, 6 May 2005 12:13:27 +0200
Subject: RFC 2822 format date printing function in python
References: <20050506081914.42197.qmail@web8408.mail.in.yahoo.com>
Message-ID: <d5ffmq$96i$2@sea.gmane.org>

"praba kar" wrote:

>    In Php we can print RFC 2822 formatted date by
> date('r') with parameter r.  Then it will print the
> below format date.
> "Thu,  7 Apr 2005 01:46:36 -0300".
> I want to print same RFC 2822 format in python. Is it
> possible in python? . If possible kindly mention the
> function related to print RFC format date

here's what I replied the last time you asked about RFC 2822 dates:

    the timestamp format you're using is also known as the RFC(2)822 format.
    the "email" package contains several functions to deal with this format:

    >>> x = 1112962934
    >>> from email.Utils import formatdate
    >>> formatdate(x) # default is utc 'Fri, 08 Apr 2005 12:22:14 -0000'
    >>> formatdate(x, localtime=1)
    'Fri, 08 Apr 2005 14:22:14 +0200'

    >>> from email.Utils import parsedate_tz
    >>> parsedate_tz(formatdate(x, localtime=1))
    (2005, 4, 8, 14, 22, 14, 0, 1, 0, 7200)

    for the full story, see:

        http://docs.python.org/lib/module-email.Utils.html

you may want to save copies of questions you've already asked, and
the replies you got, so you can avoid asking the same questions over
and over again.  (yes, this also applies if you're a bot).

</F>





From michele.simionato at gmail.com  Sun May  1 12:43:11 2005
From: michele.simionato at gmail.com (Michele Simionato)
Date: 1 May 2005 09:43:11 -0700
Subject: Reusing object methods?
In-Reply-To: <d4trsp$jsl$1@bagan.srce.hr>
References: <d4trsp$jsl$1@bagan.srce.hr>
Message-ID: <1114965791.266499.116690@f14g2000cwb.googlegroups.com>

If you need just a single method once, don't use a mixin; just do
B.meth = A.meth.im_func. Do not underestimate the burden of
mixins on people reading your code (at least, for me it is burden,
since I have to draw the inheritance tree in my mind, look at which
methods are involved, wonder about the resolution order etc.)


            Michele Simionato



From andy2O at hotmail.com  Wed May 11 11:33:25 2005
From: andy2O at hotmail.com (andy2O at hotmail.com)
Date: 11 May 2005 08:33:25 -0700
Subject: OO design question / Transform object in place?
Message-ID: <1115825605.654601.137580@f14g2000cwb.googlegroups.com>

Hello comp.lang.py,

Can you help me with ideas for the following (somewhat newbie) OO
design question in Python? Note, I'm using psuedo-code, not actual
Python for the examples!

Background:
-----------
I need to represent a small variety of mathematical constructs
symbolically using Python classes.

1) I have classes, representing numbers, symbolic variables etc.
2) I have classes for groups of these objects, such as a symbolic Sums.
3) To simplify the mathematical constructs, I've provided each of the
   classes with a simplify(self) method.

The following psuedo-code gives an example

a = Variable('a')
b = Variable('b')
two = Number(2) #Yes there are good reason not
                #to just use Python's int object! :-)

expression1 = Sum([a,b,a,a,two]) #This represents a+b+a+a+2

then calling "expression1.simplify()" would invoke Sum.simplify() and
reduce expression1 to 3*a+b+2

Question:
---------

Now suppose I set "expression2 = Sum([a,-a])" and Sum.simplify()
recognises that the two terms cancel and the Sum has value 0.

Can I make "expression2.simplify()" transform expression2 from an
instance of Sum to an instance of Number(0) **in place**? Is that
possibe, or do I really have to write

expression2 = SimplifyFunction(expression2)

and use the function return to set expression2 to be a Number(0)
object, which is annoying for a variety of reasons! Have I made a
mistake in the design?

Many thanks,
andy.



From steven.bethard at gmail.com  Sun May 29 11:20:37 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Sun, 29 May 2005 09:20:37 -0600
Subject: How do i read just the last line of a text file?
In-Reply-To: <x8ydncqu_IQ-TQTfRVn-jg@comcast.com>
References: <1117341766.166081.132240@o13g2000cwo.googlegroups.com>
	<9v0om2-5fl.ln1@rogers.com> <429959E6.9040208@lexicon.net>
	<998om2-5fl.ln1@rogers.com> <x8ydncqu_IQ-TQTfRVn-jg@comcast.com>
Message-ID: <V_ednXhifMdfQATfRVn-1Q@comcast.com>

Andy Leszczynski wrote:
> Chris F.A. Johnson wrote:
>>    And to answer the question in the subject line:
>>
>> last_line = file(argv[1]).readlines()[-1]
>>
>>    Both of which assume "from sys import argv".
> 
> What if a file is long enough?

Huh?  You mean what if it's too big to fit in memory?  Then try this:

for last_line in file(argv[1]):
     pass

At the end of the for loop, last_line should be bound to the last line 
in the file.  (If there's a chance your file might not have any lines, 
you'll want to do some error checking...)

STeVe


From peter at engcorp.com  Mon May  2 17:05:57 2005
From: peter at engcorp.com (Peter Hansen)
Date: Mon, 02 May 2005 17:05:57 -0400
Subject: Running script in background.
In-Reply-To: <4274DB6A.5020906@syscononline.com>
References: <1114930327.902938.204630@z14g2000cwz.googlegroups.com>
	<4274DB6A.5020906@syscononline.com>
Message-ID: <fb2dndEA5_q0C-vfRVn-jg@powergate.ca>

Larry Bates wrote:
> You have two choices:
> 
> 1) You can use Windows Scheduler to run the script in the
> background.  I have lots of scripts that I do this with.
> 
> 2) You can convert the script into a Windows Service, which
> will run in the background continuously.
> 
> I know of no way to manually start something in the foreground
> and have it execute in the background (unlike on Linux).

Depending on your definition of "background", the "START" command in 
Windows is one way of doing precisely that.  START /? for help...

-Peter


From news at NOwillmcguganSPAM.com  Tue May 31 05:32:57 2005
From: news at NOwillmcguganSPAM.com (Will McGugan)
Date: Tue, 31 May 2005 10:32:57 +0100
Subject: How to run functions in the background?
In-Reply-To: <mailman.265.1117501426.18027.python-list@python.org>
References: <429B3A9E.9060201@mailshack.com> <d7fnj2$sh3$1@sea.gmane.org>
	<mailman.265.1117501426.18027.python-list@python.org>
Message-ID: <429c2f4b$0$24082$db0fefd9@news.zen.co.uk>

Ognjen Bezanov wrote:

> 
> I had a look into this, but have decided on pymedia, which was more
> focused on well... media.
> 
> Either way thanks all of you, I have written my first threaded program,
> and it does what I need it to perfectly.
> 
> The only thing i have a problem with now is how to communicate with the
> thread, I need to send commands such as "play","pause" and the like to
> it. someone here mentioned queues, but searching the python
> documentation only have me a description of the queue object.
> 
> Is there anywhere where I can find out about queues, for people who know
> python but have not had a lot of experience with threaded programs? Cheers

Queues take most of the hassle out of thread programming. You need to 
come up with an object that encapsulates all the commands you may need. 
In your case, it sounds like a string is all you'll need. The thread 
with the player periodically monitors the queue for commands with 
Queue.get, and your other thread occasionaly sends commands by putting 
them on the queue with Queue.put.

If the queue is the only point of contact between your threads (ie they 
dont share data), then you should find it a breeze to set up.


Will

-- 
http://www.willmcgugan.com
"".join({'*':'@','^':'.'}.get(c,0) or chr(97+(ord(c)-84)%26) for c in 
"jvyy*jvyyzpthtna^pbz")


From jabel at plus.net  Fri May 27 04:14:11 2005
From: jabel at plus.net (John Abel)
Date: Fri, 27 May 2005 09:14:11 +0100
Subject: Running a python program during idle time only
In-Reply-To: <4296D550.7090304@plus.net>
References: <1116637560.499307.28700@o13g2000cwo.googlegroups.com>	<mailman.7.1116821147.18027.python-list@python.org>	<1116869538.611233.264960@g14g2000cwa.googlegroups.com>	<5j64x9gz09.fsf@idiom.com>	<4296D2E3.8060605@hathawaymix.org>
	<4296D550.7090304@plus.net>
Message-ID: <4296D6D3.6080502@plus.net>

John Abel wrote:

>Shane Hathaway wrote:
>
>  
>
>>Mike Meyer wrote:
>> 
>>
>>    
>>
>>>On a completely different topic, this looks like the wrong way to solve
>>>the problem. You want to update a search engine based on changes to the
>>>underlying file system. The right way to do this isn't to just keep
>>>rescanning the file system, it's to arrange things so that your scanner
>>>gets notified of any changes made to the file system. I did something like 
>>>this for my web site search engine, but that's hooked into the SCM that's
>>>used for propogating changes to the web site. I know someone is working
>>>on patches to the FreeBSD kernel to make this kind of thing work. It would
>>>seem that some of the "backup" facilities that worked by keeping a mirror
>>>of the disk on separate media would have to have used such hooks, but maybe
>>>not.
>>>   
>>>
>>>      
>>>
>>I think you're right that filesystem change notification is what Carlos
>>needs.
>>
>>If you're interested in using Linux, Carlos, "inotify" is a new kernel
>>module that can notify your program of filesystem changes.  It's not
>>folded into the mainline kernel yet, but it's a clean patch.
>>
>>http://www.edoceo.com/creo/inotify/
>>
>>I don't know if Windows has anything like it.  I'd be interested to hear
>>if it does.
>>
>>Shane
>> 
>>
>>    
>>
>Using the PyWin32 extensions, you can register an event with the kernel, 
>and then have the script sleep.  If I can remember how, I'll post some 
>code.  It's been a while since I coded specific Win32 stuff.
>
>J
>  
>
Couldn't find my code, but this page has various ways of doing it on Win32.

http://tgolden.sc.sabren.com/python/win32_how_do_i/watch_directory_for_changes.html

HTH

J


From pgmoscatt at optushome.com.au  Wed May 11 05:15:04 2005
From: pgmoscatt at optushome.com.au (Peter Moscatt)
Date: Wed, 11 May 2005 19:15:04 +1000
Subject: Using TCL files in Python ?
Message-ID: <pan.2005.05.11.09.15.00.27816@optushome.com.au>

I am reasonably new to programming in Python. [Using LINUX]

Up until now I have been using GUI widgets supplied by 'Tkinter' but
starting to realise that Tkinter have limited widgets.

I have been given the lead that I should look at other sources for GUI
widgets - namely TCL.

I have just done a search for 'tcl' files on my 'Fedora 3' installation
and find I have available:

  Tix8.1
  Tcl8.4
  Tk8.4

I have never used TCL code under Python so I assume I can use widgets from
any of these providers ?

Where is a good resource I can use to help understand how to use TCL files
in Python ?

Thanks for your help.

Pete



From reder at jpl.nasa.gov  Tue May 31 14:36:02 2005
From: reder at jpl.nasa.gov (Leonard J. Reder)
Date: Tue, 31 May 2005 11:36:02 -0700
Subject: plotting with Python
In-Reply-To: <PAGme.196$JQ6.111@newssvr11.news.prodigy.com>
References: <429aeac6$1@news.fhg.de>
	<PAGme.196$JQ6.111@newssvr11.news.prodigy.com>
Message-ID: <d7iaqi$gas$1@nntp1.jpl.nasa.gov>

Hi Philippe,

You may want to look at HippoDraw application.  The web site is 
http://www.slac.stanford.edu/grp/ek/hippodraw/.  I have used both
the C++ api and python bindings.  They have a layer of python called
hippoplotter.py to make it easy to instance the basic plotting canvase
and place multiple plots on it.  This tool is built on Qt and it was
very easy for me to get going with it.

Maybe worth looking at.

Len

Philippe C. Martin wrote:

> Look at wxPython
> 
> Regards,
> 
> Philippe
> 
> 
> 
> Rolf Wester wrote:
> 
> 
>>Hi,
>>
>>I have a Python console application that is intended to be used
>>interactively and I have to add plotting capabilities (multiple XY plots
>>and if possible 2D-surface plots). I'm loocking for a reasonably fast
>>plotting library (not GPL'ed, needs not be for free) that can be used
>>under Windows. An alternative would also be a standalone application
>>that can be controlled via TCP/IP from my Python application. I tried
>>matplotlib but this is not fast enough (especially under Windows). I
>>considered PyQwt but this is GPL'ed. So I would be very appreciative for
>>any help.
>>
>>With kind regards
>>
>>Rolf Wester
> 
> 

-- 
____________________________________________________
Leonard J. Reder
Jet Propulsion Laboratory
Interferometry Systems and Technology Section 383
Email: reder at huey.jpl.nasa.gov
Phone (Voice): 818-354-3639
Phone (FAX): 818-354-4357
Mail Address:
Mail Stop: 171-113
4800 Oak Grove Dr.
Pasadena, CA. 91109
---------------------------------------------------


From pod at internode.on.net  Fri May 13 08:10:09 2005
From: pod at internode.on.net (PoD)
Date: Fri, 13 May 2005 21:10:09 +0900
Subject: function with variable arguments
References: <1115977954.266898.141150@g49g2000cwa.googlegroups.com>
Message-ID: <pan.2005.05.13.12.10.09.18787@internode.on.net>

On Fri, 13 May 2005 02:52:34 -0700, Xah Lee wrote:

> i wanted to define a function where the number of argument matters.
> Example:
> 
> def Range(n):
>     return range(n+1)
> 
> def Range(n,m):
>     return range(n,m+1)
> 
> def Range(n,m,step):
>     return range(n,m+1,step)
> 
> this obvious doesn't work. The default argument like
> Range(n=1,m,step=1) obviously isn't a solution.
> 
> can this be done in Python?
> 
> or, must the args be changed to a list?
> 

def Range(n,m=None,step=1):
  if m is None:
    n,m = 0,n+1
  else:
    n,m = n,m+1
  return range(n,m,step)




From Sebastien.Boisgerault at gmail.com  Mon May  9 14:02:27 2005
From: Sebastien.Boisgerault at gmail.com (=?iso-8859-1?q?S=E9bastien_Boisg=E9rault?=)
Date: 9 May 2005 11:02:27 -0700
Subject: Does anybody know the status of PyCon recordings?
In-Reply-To: <mailman.219.1115660518.29826.python-list@python.org>
References: <mailman.219.1115660518.29826.python-list@python.org>
Message-ID: <1115661747.440960.44200@z14g2000cwz.googlegroups.com>

http://www.pycon.org/talks/

Cheers,

SB



From flamesrock at gmail.com  Wed May  4 13:48:41 2005
From: flamesrock at gmail.com (flamesrock)
Date: 4 May 2005 10:48:41 -0700
Subject: Bandwith Shaping
Message-ID: <1115228921.520113.245920@z14g2000cwz.googlegroups.com>

Just curious - is there an easy way to shape bandwith in python. If I
wanted to have a max download speed for instance

-thanks



From wolfgang.keller.nospam at gmx.de  Fri May  6 10:19:09 2005
From: wolfgang.keller.nospam at gmx.de (Wolfgang Keller)
Date: 6 May 2005 14:19:09 GMT
Subject: ERP & CRM in Python
References: <1114942643.046728.238980@g14g2000cwa.googlegroups.com>
	<xn0e1s70csluct007wolfgangkellernospamgmxde@news.individual.de>
	<1115300855.892100.261280@f14g2000cwb.googlegroups.com>
Message-ID: <xn0e1xi14btwyo001wolfgangkellernospamgmxde@news.individual.de>

Hello,

and thanks for your reply.

> We are writing a script to render a PDF from our doc. (using
> openreport.org)

Good to read.

> > Why not mailing lists instead of online-"forums".
> There is some mailing lists;
> http://tinyerp.org/lists.php
> ... but nobody uses it.
> 
> > The former was made for efficient human-to-human communication, the
> > latter not.
> I agree.

Then why not create a gateway (<->) for the forums into mailinglists
1:1?

Best regards

Wolfgang Keller



From pyguy2 at gmail.com  Thu May 19 13:46:14 2005
From: pyguy2 at gmail.com (pyguy2 at gmail.com)
Date: 19 May 2005 10:46:14 -0700
Subject: SSL (HTTPS) with 2.4
In-Reply-To: <mailman.208.1116513082.8733.python-list@python.org>
References: <1116392416.139727.84630@g49g2000cwa.googlegroups.com>
	<428AD4D1.8030405@v.loewis.de>
	<1116396878.995648.206820@g49g2000cwa.googlegroups.com>
	<1116406256.213128.68180@f14g2000cwb.googlegroups.com>
	<grGie.3984$uR4.2802@newsread2.news.atl.earthlink.net>
	<1116422715.320683.228810@g49g2000cwa.googlegroups.com>
	<1116424363.953180.79260@g47g2000cwa.googlegroups.com>
	<1116424660.917136.79680@g47g2000cwa.googlegroups.com>
	<428b7bc5$0$7346$9b622d9e@news.freenet.de>
	<1116463961.944713.210860@g49g2000cwa.googlegroups.com>
	<mailman.208.1116513082.8733.python-list@python.org>
Message-ID: <1116524774.606167.98240@f14g2000cwb.googlegroups.com>

If you need some help, send me an email and if we figure this out we
can post a resolution.  I have used both approaches (having authored
them). Or at least let me know what site you are going to and I will
try them on  a windows box and see if I can debug that the !@#@ is
going on.


john



From rbt at athop1.ath.vt.edu  Thu May 26 11:45:08 2005
From: rbt at athop1.ath.vt.edu (rbt)
Date: Thu, 26 May 2005 11:45:08 -0400
Subject: Automatically populate and submit HTML Forms
In-Reply-To: <119bq0i5r14li9d@corp.supernews.com>
References: <d72h34$2is$1@solaris.cc.vt.edu>
	<119bq0i5r14li9d@corp.supernews.com>
Message-ID: <d74qu4$9ha$1@solaris.cc.vt.edu>

Grant Edwards wrote:
> On 2005-05-25, rbt <rbt at athop1.ath.vt.edu> wrote:
> 
>>How can I make a python client script connect to a Web server and 
>>automatically populate form fields and then submit the form?
>>
>>For example, say I wanted to check and see if 1924 was a leap year... 
>>how would I populate the 'year' field and then submit it for processing? 
>>I have no control of the server... just the client script.
>>
>><form action="cgi-bin/leapyear.py">
>> <p>Enter a year and find out if it's a leap year:
>> <input type="text" name="year" size="6">
>> <input type="submit">
>> <input type="reset">
>></form>
> 
> 
> Just use urllib() and pass the form data to the urlopen()
> method.  If given data, it will generate a "POST" request
> instead of a "GET".  Here's a snippet of code from an app of
> mine that "fills in a form" and submits it:
> 
>     postData = urllib.urlencode({'submit':'Remove','disp':'M','action':'change_Msgs'})
>     
>     for msgid in msgIDs:
>         postData += "&msgid="+msgid
> 
>     req2 = urllib2.Request("http://mc-s6.postini.com/exec/MsgCtr",postData)
>     rsp2 = ClientCookie.urlopen(req2)
> 
> In this code I've eyeballed the form and the field names are
> hard-wired into the code.  If your form doesn't change from one
> usage to the next, that's the simplest way to do it.
> 
> In my example I'm using ClientCookie and urllib2 to create/open
> the reqeust in two steps because the request seen above won't
> work without some cookie values previsouly established in code
> that I've snipped.  Otherwise all you'd need to do is something
> like this:
> 
>   urllib.urlopen('http://whatever',
>                   urllib.urlencode({'field1Name':'value1','field2Name':'value2'}))
>                   

Thanks Grant... I found ClientCookie and ClientForm here:

http://wwwsearch.sourceforge.net/

Two great Python modules that really simplify this!!!


From tjreedy at udel.edu  Sun May 29 11:30:07 2005
From: tjreedy at udel.edu (Terry Reedy)
Date: Sun, 29 May 2005 11:30:07 -0400
Subject: How do i read just the last line of a text file?
References: <1117341766.166081.132240@o13g2000cwo.googlegroups.com><9v0om2-5fl.ln1@rogers.com>
	<429959E6.9040208@lexicon.net><998om2-5fl.ln1@rogers.com>
	<x8ydncqu_IQ-TQTfRVn-jg@comcast.com>
Message-ID: <d7cn1a$13m$1@sea.gmane.org>


"Andy Leszczynski"
> What if a file is long enough?

I believe you meant "What if a file is too long to read all into memory at 
once?"

If the file is randomly accessible (with file.seek() backwards from the 
end) then you can read a chunk at the end that you expect to be large 
enough to contain the last line and search backwards for \n (ignoring a 
terminating \n) to find the end of the next-to-last line.  Even if the file 
will fit in memory, this may be faster.

Terry J. Reedy





From elie at flashmail.com  Mon May  9 12:03:13 2005
From: elie at flashmail.com (Eli)
Date: 9 May 2005 09:03:13 -0700
Subject: Question about extending the interperter
Message-ID: <1115654593.479760.52610@o13g2000cwo.googlegroups.com>

Hi,
I've followed the Python docs about extending the Python interperter
and created an extension library.
I've added my functions like this:

static PyMethodDef pmylib_methods[] = {
{"foo", pmylib_foo, METH_VARARGS, "foo() doc string"},
...
}
static PyObject *pmylib_foo(PyObject *self, PyObject *args)
{
...
	char *p;
	if (!PyArg_ParseTuple(args, "s", &p))
...
}

And that's works fine.
The problem for me is that the pointer "p" in the last function points
to the arguments:
If a user caller foo("123") - p points to '123'.
What I need is to point it to the whole string received - 'foo
("123")'.

Is there a way I can do this?

Thanks in advance,
Eli



From rtr at yahoo.com  Mon May 16 17:10:16 2005
From: rtr at yahoo.com (rotary)
Date: Tue, 17 May 2005 00:10:16 +0300
Subject: Null String Variable
Message-ID: <d6b27n$eai$1@nic.grnet.gr>

I have a variable that store a string (i.e. a variable name msg).I want to 
say something like that: if msg is empty ...then do something.So how can i 
figure that msg is empty string (no character, msg = '').Maybe a silly 
question but i have no programming experiense.Thanks, Leonidas 




From edvard+news at majakari.net  Mon May  2 04:02:44 2005
From: edvard+news at majakari.net (Edvard Majakari)
Date: Mon, 02 May 2005 11:02:44 +0300
Subject: Design advice for unit test asserters
References: <1114085180.425079.302580@z14g2000cwz.googlegroups.com>
	<874qdzpdrr.fsf@titan.staselog.com>
	<1114629540.972450.121850@g14g2000cwa.googlegroups.com>
Message-ID: <87r7gqys0r.fsf@titan.staselog.com>

"Gary" <gfyho at yahoo.com> writes:

Hi again,

> First, thanks to both Kent and Edvard for useful comments.  
> I certainly need to consider whether it make sense to switch to py.test at
> this time; its simplicity is attractive.

For what it's worth, I've also coded a simple py.test skeleton generator,
which does have some funky features like creating working tests using existing
doctest strings in the module. For simple cases, tests work out of the box,
but mostly I use it to save typing. Of course, you'd be better off using TDD,
but the program can help you there too; it is able to create a module skeleton
out of py.test suite, though it is not very mature yet. You can grab it from
http://majakari.net/dl/pytestgen/ if you wish to try it.

-- 
# Edvard Majakari		Software Engineer
# PGP PUBLIC KEY available    	Soli Deo Gloria!
One day, when he was naughty, Mr Bunnsy looked over the hedge into Farmer
Fred's field and it was full of fresh green lettuces. Mr Bunnsy, however, was 
not full of lettuces. This did not seem fair.  --Mr Bunnsy has an adventure 


From kay.schluehr at gmx.net  Mon May 23 17:15:37 2005
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: 23 May 2005 14:15:37 -0700
Subject: What are OOP's Jargons and Complexities?
In-Reply-To: <1116843761.619249.144790@g47g2000cwa.googlegroups.com>
References: <1116843761.619249.144790@g47g2000cwa.googlegroups.com>
Message-ID: <1116882937.938387.150210@z14g2000cwz.googlegroups.com>

Xah Lee wrote:

> As part of this new syntax and purity, where everything in a program
is
> of Classes and Objects and Methods, many complex issues and concept
> have arisen in OOP.

Yes and it is easy to communicate a class which represents some thing
determined by object oriented analysis and can be graphed as an element
of an UML diagram in your development team. This is simply the state of
the art in the IT industry and if FP-people or followers of any other
alternative programming style can communicate their concepts and design
patterns via type-classes or parentheses as well or better than they
will going to lead the dicourse and OO will fall apart. I'm just
sceptical that this is going to happen.

Kay



From mirnazim at gmail.com  Tue May 31 01:56:27 2005
From: mirnazim at gmail.com (Mir Nazim)
Date: 30 May 2005 22:56:27 -0700
Subject: Report generator for object databases.
Message-ID: <1117518987.193897.226100@g43g2000cwa.googlegroups.com>

Hi,
I m planning to use ZODB for an applicaton. Is any one aware of report
generators like Data Vision, Crystal Reports, fo python object
databases.

Some of you may have faced/solved similar problem some where.

Help appreciated.
Thanks



From jstroud at mbi.ucla.edu  Thu May  5 13:51:29 2005
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Thu, 5 May 2005 10:51:29 -0700
Subject: How to detect a double's significant digits
In-Reply-To: <1115314620.902071.323410@f14g2000cwb.googlegroups.com>
References: <1115314620.902071.323410@f14g2000cwb.googlegroups.com>
Message-ID: <200505051051.29818.jstroud@mbi.ucla.edu>

Significant digits are an accounting concept. As such, it is up to the 
accountant to keep track of these as only she knows the precision of her 
measurements.

Koan for the day:

What are the significant digits of 0.1?

Hint:

>>> `0.1`

James


On Thursday 05 May 2005 10:37 am, so sayeth mrstephengross:
> Hi all... How can I find out the number of significant digits (to the
> right of the decimal place, that is) in a double? At least, I *think*
> that's what I'm asking for. For instance:
>
> 0.103 --> 3
> 0.0103 --> 4
> 0.00103 --> 5
> 0.000103 --> 6
> 0.0000103 --> 7
>
> Thanks in advance!
> --Steve (mrstephengross at hotmail.com)

-- 
James Stroud, Ph.D.
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From roy at panix.com  Sat May 14 07:36:07 2005
From: roy at panix.com (Roy Smith)
Date: Sat, 14 May 2005 07:36:07 -0400
Subject: Returning Date As String ?
References: <pan.2005.05.14.11.05.47.499875@optushome.com.au>
Message-ID: <roy-394D80.07360714052005@reader1.panix.com>

Peter Moscatt <pgmoscatt at optushome.com.au> wrote:

> I am wanting to return the system date using the following:
> 
> 	date.today()
> 
> How would I then convert this to a string ?
> 
> Pete

datetime.data objects have a __str__() method.  To convert one to a string, 
you just have to cause its __str__() to be invoked.  The most common ways 
of doing that are str(), %s, or print:

>>> import datetime
>>> d = datetime.date.today()
>>> d
datetime.date(2005, 5, 14)   # this is the repr() of the object
>>> print d
2005-05-14
>>> str(d)
'2005-05-14'
>>> '%s' % d
'2005-05-14'


From mefjr75 at hotmail.com  Mon May  2 19:32:53 2005
From: mefjr75 at hotmail.com (M.E.Farmer)
Date: 2 May 2005 16:32:53 -0700
Subject: Mouseclick
In-Reply-To: <1115074248.832660.262510@f14g2000cwb.googlegroups.com>
References: <1e140f34.0505021030.9f615dc@posting.google.com>
	<mailman.41.1115059746.6583.python-list@python.org>
	<1115065280.936189.67050@o13g2000cwo.googlegroups.com>
	<1115074248.832660.262510@f14g2000cwb.googlegroups.com>
Message-ID: <1115076773.702183.172980@z14g2000cwz.googlegroups.com>

This could be fun!
# random clicks
# play with values to maximize annoyance
if __name__ == "__main__":
    import random
    for i in range(1000):
        x = random.randint(0,800)
        y = random.randint(0,600)
        Click(x,y)
        time.sleep(random.randint(0,20))



From fuzzyman at gmail.com  Mon May  9 06:44:40 2005
From: fuzzyman at gmail.com (Fuzzyman)
Date: 9 May 2005 03:44:40 -0700
Subject: ANN: rest2web 0.1.0
Message-ID: <mailman.205.1115642523.29826.python-announce-list@python.org>

Finally, the long awaited (*ahem*) release of **rest2web**.
It's an early release - lot's more features still to be added - but it
all works. *Hurrah*

rest2web is a tool for autogenerating websites. It allows you to store
your contents in reST format, and generate pages and indexes from
templates. It uses a simple but flexible templating system and
generates index pages and navigation links.

This means that adding new pages is as easy as dropping a text file
into the right folder. rest2web will handle adding the link to the
index page and creating the new page from a template and the contents.
Removing a page is as easy as deleting a single file, and have rest2web
automatically rebuild the indexes.

The download includes the rest2web code, and docs, and a test site. The
test site serves as a simple illustration of how rest2web builds pages
and indexes.

For full details see any of the following pages :

* `rest2web Docs` - http://www.voidspace.org.uk/python/rest2web
* `Example Site` -
http://www.voidspace.org.uk/python/rest2web/test_site
* `Quick Download (608k)` -
http://www.voidspace.org.uk/cgi-bin/voidspace/downman.py?file=rest2web.zip

The next features to add will be auto sitemap generation and a bigger
change (under the hood) to make the index data available to every page
in a section. This will allow pages to have sidebars with links, rather
than just a single index page per section.

I'm already building part of the Voidspace website with rest2web, over
the next few months it will take over....

Lots of other features, tested on Linux and Windoze.

Fuzzyman
http://www.voidspace.org.uk/python



From ahaas at airmail.net  Thu May 26 15:05:56 2005
From: ahaas at airmail.net (Art Haas)
Date: Thu, 26 May 2005 14:05:56 -0500
Subject: [ANNOUNCE] Twenty-fifth release of PythonCAD now available
Message-ID: <20050526190556.GJ9543@artsapartment.org>

I'm pleased to announce the twenty-fifth development release of PythonCAD,
a CAD package for open-source software users. As the name implies,
PythonCAD is written entirely in Python. The goal of this project is
to create a fully scriptable drafting program that will match and eventually
exceed features found in commercial CAD software. PythonCAD is released
under the GNU Public License (GPL).

PythonCAD requires Python 2.2 or newer. The interface is GTK 2.0
based, and uses the PyGTK module for interfacing to GTK. The design of
PythonCAD is built around the idea of separating the interface
from the back end as much as possible. By doing this, it is hoped
that both GNOME and KDE interfaces can be added to PythonCAD through
usage of the appropriate Python module. Addition of other PythonCAD 
interfaces will depend on the availability of a Python module for that
particular interface and developer interest and action.

The twenty-fifth release consists primarily of bug fixes. The compatibility
code for the GTK Action and ActionGroup classes introduced in the previous
release had a number of bugs which have been fixed. People running PythonCAD
on PyGTK releases prior to 2.4 should find this latest release working
correctly due to these fixes. Thanks go to Wilbert Knol for helping identify
and test the proposed fixes for this problem. A number of changes to the
event handling code also are include in this release. Previously various
event handling routines either returned an incorrect value, or returned a
value when not needed. This release cleans up many of these issues, making
the event handling code easier to follow as well as better conforming to
GTK/PyGTK requirements. Various other bug fixes and code enhancements are
present in this release as well.

A mailing list for the development and use of PythonCAD is available.
Visit the following page for information about subscribing and viewing
the mailing list archive:

http://mail.python.org/mailman/listinfo/pythoncad

Visit the PythonCAD web site for more information about what PythonCAD
does and aims to be:

http://www.pythoncad.org/

Come and join me in developing PythonCAD into a world class drafting
program!

Art Haas
-- 
Man once surrendering his reason, has no remaining guard against absurdities
the most monstrous, and like a ship without rudder, is the sport of every wind.

-Thomas Jefferson to James Smith, 1822


From gsakkis at rutgers.edu  Mon May 16 18:39:04 2005
From: gsakkis at rutgers.edu (George Sakkis)
Date: 16 May 2005 15:39:04 -0700
Subject: Markov chain with extras?
References: <1116278880.976106.191780@o13g2000cwo.googlegroups.com>
Message-ID: <1116283144.051195.193370@g44g2000cwa.googlegroups.com>

> Hi All,
>
> Could someone show me how to do this?
>
> I want to generate a list using a Markov chain, however, as well as
> using the previous two items in the list to decide the current choice
I
> want the decision to be also dependant on an item at the current
> position in another list.
>
> I hope this explains thing clearly enough.
>
> Thanks,
>
> Malcolm


What's wrong with keeping explicitly the index of the current position,
say j ? Then you can index the previous two items as chain[j-1],
chain[j-2] and the item in the other list as otherchain[j]. If you're
talking about something else, you need to clarify the problem more.

George



From bill.mill at gmail.com  Thu May 12 14:31:17 2005
From: bill.mill at gmail.com (Bill Mill)
Date: Thu, 12 May 2005 14:31:17 -0400
Subject: How "return" no return ?
In-Reply-To: <3ehkh2F366o4U1@individual.net>
References: <3ehaurF34ak0U1@individual.net>
	<mailman.472.1115911936.29826.python-list@python.org>
	<3ehc5tF35eo3U1@individual.net>
	<mailman.484.1115919541.29826.python-list@python.org>
	<3ehkh2F366o4U1@individual.net>
Message-ID: <797fe3d405051211317d6f7401@mail.gmail.com>

On 5/12/05, Ximo <elrei69 at yahoo.es> wrote:
> I am doing my own interpreter with the Python languaje.
> 
> Do you understand me?

Well, to be frank, no. However, Frederik's point still stands; in the
python langage, "int a" is syntactically invalid. If you're writing
your own interpreter, it should still be syntactically invalid.

Could you perhaps repeat your question with an example of what
behavior is surprising you?

Peace
Bill Mill
bill.mill at gmail.com

> 
> "Fredrik Lundh" <fredrik at pythonware.com> escribi? en el mensaje
> news:mailman.484.1115919541.29826.python-list at python.org...
> > "Ximo" wrote:
> >
> >> I am doing a interpret of lines and it show me a prompt, and I want if I
> >> write a declaration as "int a" my progrtam return de prompt and nothing
> >> more, for exemple:
> >>
> >> >>> 2+2
> >> 4
> >> >>> int a
> >> >>>
> >>
> >> Then I'm finding that de function which execute "int a" return me
> >> nothing,
> >> and no
> >>
> >> >>> int a
> >> None
> >> >>>
> >
> > what Python version are you using?  here's what a normal Python
> > interpreter is supposed to do with your example:
> >
> >>>> 2+2
> > 4
> >>>> int a
> >  File "<stdin>", line 1
> >    int a
> >        ^
> > SyntaxError: invalid syntax
> >>>>
> >
> > </F>
> >
> >
> >
> 
> 
> --
> http://mail.python.org/mailman/listinfo/python-list
> 
>


From kay.schluehr at gmx.net  Wed May 18 15:55:57 2005
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: 18 May 2005 12:55:57 -0700
Subject: EpyDoc problem
In-Reply-To: <mailman.164.1116443342.8733.python-list@python.org>
References: <428A5CAA.906@geochemsource.com>
	<428A66A8.9090000@geochemsource.com>
	<mailman.164.1116443342.8733.python-list@python.org>
Message-ID: <1116446157.756809.97320@g49g2000cwa.googlegroups.com>

Laszlo Zsolt Nagy wrote:

> I had to patch EpyDoc. The author was not responding and there is no
mailing
> list for EpyDoc. Is it still a live project?

EpyDoc is hosted in Sourceforge. This alone may answer your question
about a bug-tracker:

http://sourceforge.net/tracker/?atid=405618&group_id=32455&func=browse

Ciao,
Kay



From kenneth.m.mcdonald at gmail.com  Tue May 31 02:10:48 2005
From: kenneth.m.mcdonald at gmail.com (Kenneth McDonald)
Date: Tue, 31 May 2005 01:10:48 -0500
Subject: Questions on using Qt or wxWindows with Python and OS X
Message-ID: <eb45506d050530231078e917a5@mail.gmail.com>

If this is not an appropriate newsgroup for this type of posting,
please let me know and (if possible) suggest an alternative. I've
done a fair bit of research on the net, but information is scattered
all over the place and I haven't been able to find mailing lists
relating specifically to python and UIs.

I'd like to start using Python for some GUI programming again. I'd
like to use Tk, but it seems to be dying a slow death, so it's
probably time to look at wxPython and PythonQt.

I'd appreciate any comments on the relevant merits of these two
libraries, both with respect to Python and more generally. I know
about the differences in licensing, that's not an issue. My most
specific concerns are ease of use (which includes how much in the way
of documentation or examples for using through Python are available,
and how easy the Python libs are to use in each case); availability of
a generally capable styled text widget, as one of the things I need to
build is an editor, which needs to be able to handle different fonts,
styles, tabs, and so forth; and ease of installation on a Macintosh,
since that is my preferred dev platform, and installing things made
for other UNIX variants can be a little wonky at times.

I'm also curious as to the quality of documentation available for
wxPython and wxWindows, and any differences between the
wxWindows text widget (which is generally Scintilla I believe),
and the Qt text widget classes. I've had a hard time finding good
docs for wxWindows or wxPython, and the bit of documentation
on Scintilla I've found and read seems to indicate that it has some
restrictions, such as needing to use the same line height for all lines
regardless of content.

Many thanks for any feedback you can give.


Cheers,
Ken


From gnb at itga.com.au  Thu May 19 02:58:44 2005
From: gnb at itga.com.au (Gregory Bond)
Date: Thu, 19 May 2005 16:58:44 +1000
Subject: processing a Very Large file
In-Reply-To: <86wtpv3esw.fsf@guru.mired.org>
References: <mailman.114.1116358282.8733.python-list@python.org>
	<118mdpnji58bvb6@corp.supernews.com>
	<86wtpv3esw.fsf@guru.mired.org>
Message-ID: <5fdh6d.nn6.ln@lightning.itga.com.au>

Mike Meyer wrote:

> 
> Unknown. Python relies on the C alloc/free routines for handling
> memory. del may immediately free() the memory (I don't know), but that
> doesn't mean it gets released to the OS. None of the implementations
> of alloc/free I'm aware of ever give the memory back to the OS. They
> store it in a data structure for internal reuse.
>
... and in any serious OS, if memory is not reused it will eventually 
page out anyway, so the total cost of not releasing the memory back to 
the OS is miniscule (an entry or two in a page table) and the benefit of 
releasing it basically nil[*], while the effort of working out whether 
memory can be released or not is possibly quite significant.

[* Excepting possible swap-space exhaustion, I suppose.]


From fredrik at pythonware.com  Sun May 15 01:44:19 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Sun, 15 May 2005 07:44:19 +0200
Subject: Faster GUI text control
References: <A_udnVpGA43xjBjfRVn-iQ@comcast.com><mailman.59.1116053899.29328.python-list@python.org>
	<B92dneFEus_FzhvfRVn-gQ@comcast.com>
Message-ID: <d66nj7$1u4$1@sea.gmane.org>

"none <"@bag.python.org> wrote:

> > no, it would mean writing some python code.  if all you need is a scrolling
> > text list, you can simply use the code on this page:
> >
> >     http://effbot.org/zone/wck-4.htm
> >
> > (see "A scrollable list view, with scrollbar support" and, optionally,
> > the virtual data modifications under "Displaying Huge Data Sets")
> >
> > the resulting widget will update at constant speed, independent of the
> > data size.
> >
> > </F>
>
> Thanks for the suggestion.  I looked at that, but I need to be able to
> selectively change colors on parts of the text and I didn't think I
> could do that with a list box.  Am I misunderstanding that?

yes.  the list view isn't a listbox, it's a new widget.

with the list view, you control the drawing yourself, and can draw things
in whatever way you want.  (the section "Non-Standard Rendering" talks
about this; reading http://effbot.org/zone/wck-3.htm also helps).

</F>





From roy at panix.com  Mon May 16 19:37:12 2005
From: roy at panix.com (Roy Smith)
Date: Mon, 16 May 2005 19:37:12 -0400
Subject: Python on a public library computer
References: <1116069664.779281.320540@g47g2000cwa.googlegroups.com>
	<87r7g6rbz0.fsf@pobox.com>
	<mailman.67.1116286093.8733.python-list@python.org>
Message-ID: <roy-56D210.19371216052005@reader1.panix.com>

Timothy Smith <timothy at open-networks.net> wrote:
> there's a few (brave) public access unix shell providers out there. if 
> you could run telnet you could use them

If you want to go that route, I highly suggest panix.com.  They've been in 
business forever, are geek friendly, and have a technical support staff 
(and attitude) that just can't be beat.  I get a unix shell account from 
them, mostly for mail and news access (but, on occasion, it's nice to have 
a unix box I can ssh into from anywhere).

They're currently running Python-2.4.  A couple of the active pythonistas 
that hang out here have panix accounts.


From borges2003xx at yahoo.it  Tue May 31 04:19:22 2005
From: borges2003xx at yahoo.it (borges2003xx at yahoo.it)
Date: 31 May 2005 01:19:22 -0700
Subject: regular expression problem
Message-ID: <1117527562.055872.93830@o13g2000cwo.googlegroups.com>

hi everyone
there is a way, using re, to test (for es) in
a=[a1,a2,a3,a4,a5,a6,a7,a8,a9,a10,a11,a12,a13,a14] if a list b is
composed by three "sublists" of a separated or not by elements.

if b=[a2,a3,a4,a7,a8,a12,a13] gives true because in a
we have [....,a2,a3,a3,...,a7,a8,...,a12,a13,...]
or b=[a1,a2,a5,a14] gives true because in a we have
[a1,a2,....,a5,...,a14] and so on...

thank in advance.
giorgio borghi



From nospam at here.com  Mon May 16 09:29:19 2005
From: nospam at here.com (Matt Feinstein)
Date: Mon, 16 May 2005 09:29:19 -0400
Subject: Applying a function to a 2-D numarray
Message-ID: <nb7h81hqrgbd2kofg48tlt8oaicv34iuh9@4ax.com>

Is there an optimal way to apply a function to the elements of a two-d
array?

What I'd like to do is define some function:

def plone(x):
     return x+1

and then apply it elementwise to a 2-D numarray. I intend to treat the
function as a variable, so ufuncs are probably not appropriate-- I
realize that  what I'm looking for won't be terrifically efficient,
but I'd like to avoid doing it in the -worst- possible way.

Some things I've looked at include things like

def applyfun(m,f):
     elist = [f(e) for e in m]
     return reshape(elist,m.shape)

however, I can see that this looks neat but probably generates several
copies of the array, which is not so neat.

Is there a better way?

Matt Feinstein

--
There is no virtue in believing something that can be proved to be true.


From flupke at nonexistingdomain.com  Mon May  2 05:54:38 2005
From: flupke at nonexistingdomain.com (flupke)
Date: Mon, 02 May 2005 09:54:38 GMT
Subject: __del__ and logging
In-Reply-To: <mailman.35.1114797463.14961.python-list@python.org>
References: <5Clce.76603$Io7.4986997@phobos.telenet-ops.be>
	<mailman.35.1114797463.14961.python-list@python.org>
Message-ID: <yNmde.79059$X62.5092464@phobos.telenet-ops.be>

Vinay Sajip wrote:
> flupke <flupke <at> nonexistingdomain.com> writes:
> 
> 
>>Hi,
>>
>>i have a class and a class attribute log which is a logger object. In 
>>the __del__() function i want to log a message but it fails even if i 
>>use self.__class__.log.
>>
>>The error i get is this:
>>Traceback (most recent call last):
>>   File "C:\Python24\lib\logging\__init__.py", line 712, in emit
>>     self.stream.write(fs % msg)
>>ValueError: I/O operation on closed file
>>
>>So is there no way to use the logger object in a __del__
>>I wanted to use the message to clearly indicate in the logger file that 
>>the instance had closed ok.
>>
> 
> 
> It all depends. If your __del__ is being called via atexit() for application
> cleanup, for example, logging may not be available to you because it has been
> cleaned up beforehand.
> 
> The logging module registers an atexit() handler to flush and close handlers
> before script termination.
> 
> Vinay Sajip
> 
> 

Thanks i was able to solve it using a function registered in both the 
classes i used in that project.
Why would one use __del__ instead of atexit then especially if the calls 
  you make in __del__ are so unrelieable?

Regards,
Benedict


From onurb at xiludom.gro  Fri May 13 04:39:11 2005
From: onurb at xiludom.gro (bruno modulix)
Date: Fri, 13 May 2005 10:39:11 +0200
Subject: Python Documentation (should be better?)
In-Reply-To: <mailman.411.1115854727.29826.python-list@python.org>
References: <5C99C308457E6D4EA5448EA52A66004A675A6E@or.mxim.com>	<17026.26789.592527.975821@montanaro.dyndns.org>	<mailman.398.1115843305.29826.python-list@python.org>	<428276e8$0$318$626a14ce@news.free.fr>
	<mailman.411.1115854727.29826.python-list@python.org>
Message-ID: <428467b1$0$5860$626a14ce@news.free.fr>

Ivan Van Laningham wrote:
> Hi All--
> Yes.  There are multiple ways I can correct myself, some, I'm sure,
> involving chains and whips. 

Well, if you like it...

> But you're all missing the point: 
> Christopher is right!  Python docs are not as good as PHP docs.

That's a POV, not a fact.

> Why
> not?  Why do I have to be told "Hey, there are fifty ways to get what
> you want!" when I should be able to go to the main doc page and SEE the
> right link to click.  

I fail to see why would it would be better to have to open a browser, go 
to python.org, go to the doc, find the right link etc instead of just 
typing dir(xxx) and/or help(xxx).

-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for 
p in 'onurb at xiludom.gro'.split('@')])"


From hancock at anansispaceworks.com  Thu May 12 01:13:37 2005
From: hancock at anansispaceworks.com (Terry Hancock)
Date: Thu, 12 May 2005 00:13:37 -0500
Subject: Python Documentation (should be better?)
In-Reply-To: <1115844146.719570.158550@g47g2000cwa.googlegroups.com>
References: <5C99C308457E6D4EA5448EA52A66004A675A6E@or.mxim.com>
	<mailman.398.1115843305.29826.python-list@python.org>
	<1115844146.719570.158550@g47g2000cwa.googlegroups.com>
Message-ID: <200505120013.37038.hancock@anansispaceworks.com>

On Wednesday 11 May 2005 03:42 pm, flamesrock wrote:
> I don't know what you guys are talking about!!
> In idle:
> help(module)
> 
> I love the way python handles documentation. Its not invansive

Yeah, and if you write your docstrings with reasonable care it
works for your own modules, too!  I love that.

ISTM, that Python is the best "Literate Programming" language
yet available (much easier than cweb and whatnot that gave
us the term).

--
Terry Hancock ( hancock at anansispaceworks.com )
Anansi Spaceworks  http://www.anansispaceworks.com



From jerf at jerf.org  Mon May  2 16:21:25 2005
From: jerf at jerf.org (Jeremy Bowers)
Date: Mon, 02 May 2005 16:21:25 -0400
Subject: compare two voices
References: <mailman.44.1115060288.6583.python-list@python.org>
Message-ID: <pan.2005.05.02.20.21.23.855485@jerf.org>

On Mon, 02 May 2005 13:58:07 -0500, phil wrote:

> You didn't indicate how deep you want to get into the code yourself.
> 
> I am gonna step way out of my mathematical depth here

I mean no disrespect, but this is the last accurate statement you made.

I wouldn't say this, except that if the original poster tries to follow
your advice, they'd be wasting a lot of time, so in I feel obligated to
speak out.

If it were that easy, phoneme recognition would have been a solved problem
in the 70s. It is quite a bit harder than just waving Matlab at the
problem.

Based on the subsequent posts by the original poster, giving me a better
feel of their skill level, I would estimate that in order to get to where
they want to be, they are a minimum of nine years of solid work away from
solving the problem, assuming no degree in computer science. (Such a
degree  would equip them better to know how hard the problem is, though
you could get an undergrad degree without acquiring the requisite
knowledge; with an undergrad degree in hand, subtract two years.)

I am completely, 100% serious on that time estimate, and that's just
to get you to the point where you *may* be able to solve the problem.
Anyone who tells you it's less either has a solution in hand that you can
use (good, but nobody has chimed up yet, except one guy to say it's
really, really hard, he knows because he tried, so I'm not holding my
breath), or has no clue what they are talking about.

(We are often trained to be unthinkingly encouraging, but it is a net good
to discourage someone from wasting significant amounts of time, oblivious
to the fact they are unlikely to succeed. If the original poster wishes to
dedicate that much time to the project, I would be happy to tell them how
they can begin the process of learning what they need to learn, as long as
they are aware of what they are starting.)


From rbt at athop1.ath.vt.edu  Wed May 25 10:06:14 2005
From: rbt at athop1.ath.vt.edu (rbt)
Date: Wed, 25 May 2005 10:06:14 -0400
Subject: uploading files to a webdav SSL enabled server
Message-ID: <d720om$3cr$1@solaris.cc.vt.edu>

Has anyone used pure python to upload files to a webdav server over SSL? 
  I have no control over the server. I can access it with all of the 
various webdav GUIs such as Konqueror, Cadaver, etc. by using a URL like 
this:

webdavs://dav.hostname.com/user_name/uploads

My goal is to upload files automatically with a python script. The 
server requires authentication over SSL which I can do with urllib2 like 
this:

def auth_against_url(url, username, password):

     # This is a slightly modified version that I found here:
     # http://simon.incutio.com/archive/2004/07/15/instant

     import urllib2
     import base64
     request = urllib2.Request(url)
     b64 = base64.encodestring('%s:%s' % (username, password))[:-1]
     request.add_header('Authorization', 'Basic %s' % b64)
     try:
         f = urllib2.urlopen(request)
	print f.read()
	f.close()
	return True
     except urllib2.HTTPError, e:
     	print e
         return False

auth_against_url('https://dav.hostname.com/user_name/uploads',\
                   str.strip(raw_input('Enter User ID: ')),\
		  str.strip(raw_input('Enter Password: ')))

If urllib2 supported webdav, I think I'd be in business, but it doesn't. 
Any one who can provide pointers on this? I've googled around to no 
avail. I've began playing with Perl's HTTP::DAV and somone reccomended 
PHP's curl functions as well, but I wanted to try this in Python first.

Many thanks,
rbt


From notsew-reversePreceedingAndRemoveThis at canncentral.org  Wed May  4 20:15:38 2005
From: notsew-reversePreceedingAndRemoveThis at canncentral.org (weston)
Date: 4 May 2005 17:15:38 -0700
Subject: Looking for Example of wxFontEnumerator Use
Message-ID: <1115252138.517437.193470@g14g2000cwa.googlegroups.com>

Can anyone give an example of proper usage of wxFontEnumerator?

Thanks,

   Weston



From grante at visi.com  Mon May 23 14:49:51 2005
From: grante at visi.com (Grant Edwards)
Date: Mon, 23 May 2005 18:49:51 -0000
Subject: how do you return an exit code with out exiting
References: <d6t7vj$rk5$1@vegh.ks.cc.utah.edu>
Message-ID: <11949efia20ca7@corp.supernews.com>

On 2005-05-23, Matthew Thorley <ruach at chpc.utah.edu> wrote:

> I wrote a simple python program that scrapes a web page every
> 30 secons and dumps the result in a data base. I want to use
> my linux distros build in init tools to run the script in the
> back ground as a daemon. The problem is when I call the daemon
> script to background the program I wrote it just hangs,
> waiting for my program to exit 1 or 0. My program never does
> exits because its looping every 30 seconds.
>
> Is there a way I can pass an exit value with out actualy exiting?

No.

> or is there are better way to do this?

Yes.  

To be a well-behavied daemon, you need to do the things
described in this howto:

  http://www.linuxprofilm.com/articles/linux-daemon-howto.html

Here are a couple references on how to do this in Python:

  http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/278731
  http://homepage.hispeed.ch/py430/python/
  
-- 
Grant Edwards                   grante             Yow!  Intra-mural sports
                                  at               results are filtering
                               visi.com            through th' plumbing...


From skip at pobox.com  Sat May 21 11:25:08 2005
From: skip at pobox.com (Skip Montanaro)
Date: Sat, 21 May 2005 10:25:08 -0500
Subject: first release of PyPy
In-Reply-To: <1116672984.452147.244760@g43g2000cwa.googlegroups.com>
References: <mailman.264.1116625088.8733.python-list@python.org>
	<1116629407.638782.145950@g47g2000cwa.googlegroups.com>
	<1116644536.741250.249860@g44g2000cwa.googlegroups.com>
	<mailman.279.1116649250.8733.python-list@python.org>
	<1116653460.808204.74460@g43g2000cwa.googlegroups.com>
	<87mzqpytep.fsf@wilson.rwth-aachen.de>
	<mailman.285.1116663550.8733.python-list@python.org>
	<1116672984.452147.244760@g43g2000cwa.googlegroups.com>
Message-ID: <17039.21204.804075.259515@montanaro.dyndns.org>


    beliavsky> C++ is a higher level language than C, 

>From the compiler's viewpoint C++ is not much higher level than C.  It has
the same basic types, (structs, unions and C++ classes are really the same
thing data-wise, though C++ classes can be somewhat more complex
layout-wise) and supports pointers to those types as well as void pointers
(pointers to untyped memory).  In addition, the operators are essentially
the same.

Python has a somewhat higher-level set of objects, doesn't have pointers,
nor does it allow untyped pointers to random chunks of memory.  I would
think that a run-time specializing compiler like Psyco could potentially do
more with that than a C/C++ compiler can do with the data structures and
operations it has to work with.

Skip


From doodle4 at gmail.com  Fri May 20 16:18:33 2005
From: doodle4 at gmail.com (ashtonn@gmail.com)
Date: 20 May 2005 13:18:33 -0700
Subject: buffer_info error
References: <1116619271.294467.51400@g44g2000cwa.googlegroups.com>
	<mdCdnYy2x9ym2RPfRVn-tQ@powergate.ca>
Message-ID: <1116620313.966569.154020@g44g2000cwa.googlegroups.com>

i am filling in a packet with source and destination address and using
the buffer_info call to pass on the address to an underlying low level
call.

The src and dest are strings, but buffer_info expects an array. How do
i deal with this?



From chris at angband.org  Tue May  3 13:05:46 2005
From: chris at angband.org (Operation Latte Thunder)
Date: Tue, 3 May 2005 17:05:46 +0000 (UTC)
Subject: twisted jabber and xmlstream
Message-ID: <d58b1a$2pa$1@news-int2.gatech.edu>

I am playing around with Jabber with Twisted.  I can receive messages just
fine, and thats great, however, I am a bit confused about how to actually
_send_ messages.  From what I've seen, I need to call send() on the
xmlstream I get when I am auth'd... and thats where I get stuck.  Do I
need to create the jabber message documents myself, or are there factory
methods that create message, presence, iq, etc messages for me.

Better yet, does anybody have an example on the web somewhere?

/goes back to staring at the XmlStream API doc...

TIA

-- 
chris at acheris.net			|             Roma Invicta!


From rkern at ucsd.edu  Sat May 28 19:23:35 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Sat, 28 May 2005 16:23:35 -0700
Subject: scipy for python 2.4
In-Reply-To: <1117317168.501105.187110@z14g2000cwz.googlegroups.com>
References: <1117314382.677584.133160@o13g2000cwo.googlegroups.com>	<mailman.223.1117315996.18027.python-list@python.org>
	<1117317168.501105.187110@z14g2000cwz.googlegroups.com>
Message-ID: <d7auda$lt3$1@sea.gmane.org>

querypk at gmail.com wrote:
> I tried to compile it from source. But it dint work.It was looking for
> python2.3 .But I want to install it on pyrthon 2.4
> PLatform you mean I am using RedHat 9.0. is that what you were
> referring?
> can you point me to the source you are referring. I used the sourse
> from this link...
> 
> http://www.scipy.org/download/

Yes, that's the source I'm talking about (although CVS is better). I 
don't understand what you mean when you say that the source "was looking 
for python2.3." The source distribution certainly doesn't do that.

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From news at titanic.co.uk  Fri May 27 12:17:43 2005
From: news at titanic.co.uk (Simon Faulkner)
Date: Fri, 27 May 2005 17:17:43 +0100
Subject: CygWin ODBC
In-Reply-To: <mailman.189.1117207995.18027.python-list@python.org>
References: <4296f337$0$38045$5a6aecb4@news.aaisp.net.uk>
	<mailman.189.1117207995.18027.python-list@python.org>
Message-ID: <4297481e$0$38038$5a6aecb4@news.aaisp.net.uk>

Steve Holden wrote:
> Simon Faulkner wrote:
> 
>> Hi All,
>>
>> I am new to Cygwin and am hoping that someone here will be able to 
>> tell me how to get ODBC running in Python on Cygwin.
>>
>> Maximum gratefullness...
>>
>>
>> Simon
> 
> 
> There's a trick to this which involves recompiling from source. If you 
> aren't experienced with Unix/Linux this might seem a bit intimidating.
> 
> The latest version I worked on is mxODBC 2.0.7. If Egenix have released 
> something later it may incorporate these changes. Sorry they aren't 
> "diff -c" format.
> 
> I also remember the need in the past to rename some ".cpp" files to 
> ".c", but I believe this has now been done in the distributions.
> 
> regards
>  Steve

Cheers Steve, I will try that next week....  Ta :-)


From arserlom at gmail.com  Sun May  8 15:07:58 2005
From: arserlom at gmail.com (arserlom at gmail.com)
Date: 8 May 2005 12:07:58 -0700
Subject: A question about inheritance
Message-ID: <1115579277.999256.269960@f14g2000cwb.googlegroups.com>

Hello I have a question about inheritance in Python. I'd like to do
something like this:

 class cl1:
  def __init__(self):
   self.a = 1

 class cl2(cl1):
  def __init__(self):
   self.b = 2

But in such a way that cl2 instances have atributes 'b' AND 'a'.
Obviously, this is not the way of doing it, because the __init__
definition in cl2 overrides cl1's __init__.

Is there a 'pythonic' way of achieving this?

Armando Serrano



From cgarciaf at lucent.com  Thu May  5 14:40:11 2005
From: cgarciaf at lucent.com (Carlos Garcia)
Date: Thu, 5 May 2005 20:40:11 +0200
Subject: phyton memory management
Message-ID: <00ec01c551a1$df8b73d0$ba565887@1068801y07c0j>

Hi all,

   I do have a problem with python and it is that it raise an outofmemory (i comment lines in Py.java to avoid system.exit, to debug),
i try to debug this issue with jprobe and realize that i get the exception even although the java heap is not in the limit, i can notice that
python need a memory  pick to parse the command line.

    The program is a command line that receive a string line that python parse and call some java classes ti execute the appropiate command, 
any idea?

Thansk,
==========================================================
 Carlos Garc?a                    Phone  : +34 91 714 8796
 Lucent Technologies          e-mail : cgarciaf at lucent.com
 Avenida de Bruselas , 8   -  28108 Alcobendas (Madrid)
==========================================================
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From peter at engcorp.com  Fri May 27 18:02:56 2005
From: peter at engcorp.com (Peter Hansen)
Date: Fri, 27 May 2005 18:02:56 -0400
Subject: write to the same file from multiple processes at the same time?
In-Reply-To: <119ecss4o7co9ef@corp.supernews.com>
References: <e3617$429713d7$3eb01f24$9096@news.flashnewsgroups.com>
	<roy-29C1D4.09142527052005@reader1.panix.com>
	<XOqdnU5dNq_vgwrfRVn-rg@powergate.ca>
	<119ecss4o7co9ef@corp.supernews.com>
Message-ID: <ytSdnaFbdrq5BArfRVn-ig@powergate.ca>

Grant Edwards wrote:
> On 2005-05-27, Peter Hansen <peter at engcorp.com> wrote:
>>Unfortunately this assumes that the open() call will always succeed, 
>>when in fact it is likely to fail sometimes when another file has 
>>already opened the file but not yet completed writing to it, AFAIK.
> 
> Not in my experience.  At least under Unix, it's perfectly OK
> to open a file while somebody else is writing to it.  Perhaps
> Windows can't deal with that situation?

Hmm... just tried it: you're right!  On the other hand, the results were 
unacceptable: each process has a separate file pointer, so it appears 
whichever one writes first will have its output overwritten by the 
second process.

Change the details, but the heart of my objection is the same.

-Peter


From glauco.silva at cenpra.gov.br  Mon May  2 10:38:39 2005
From: glauco.silva at cenpra.gov.br (Glauco Silva)
Date: Mon, 2 May 2005 11:38:39 -0300
Subject: problem in the compiler ?
Message-ID: <007e01c54f24$a18bfc50$e87290c8@piau>

when i creat a RadioButton and put a command = self.Function , this function is called in the creation of RadioButton.
It?s right this or it?s wrong ? 
Thank you
Glauco 
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From bdesth.quelquechose at free.quelquepart.fr  Tue May  3 16:21:44 2005
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Tue, 03 May 2005 22:21:44 +0200
Subject: PHPParser pod Zope
In-Reply-To: <yttaxdmad3aa$.1cemtbg8lyvba.dlg@40tude.net>
References: <yttaxdmad3aa$.1cemtbg8lyvba.dlg@40tude.net>
Message-ID: <4277d8ea$0$18802$636a15ce@news.free.fr>

JZ a ?crit :
> Probuje zainstalowac modul php pod zope i tam napisali dziwna rzecz ze
> potrzebuje "PHP CGI program" a nie PHP CLI. Kompilacja php 5.0.4 pod
> linuksem daje mi w wyniku mod_php + 5 plikow binarnych: pear, php,
> php-config, phpextdist, phpsize. Zas lektura skryptu do zope jest nizbyt
> jasna. Napisali:
> 
(snip)
D?sol?, ce groupe est anglophone, il serait donc tr?s probablement 
pr?f?rable (en tous cas pour toi, et si bien s?r tu esp?res une r?ponse, 
mais sinon je ne vois pas l'int?r?t de poster ici...) de nous renvoyer 
?a en anglais dans le texte !-)

I-too-can-speak-weird-foreign-languages-ly'yrs
Bruno


From Robert at AbilitySys.com  Mon May  2 14:53:15 2005
From: Robert at AbilitySys.com (Robert D. Young)
Date: Mon, 2 May 2005 11:53:15 -0700
Subject: Quick and dirty dialogs?
References: <1115059445.673382.218000@g14g2000cwa.googlegroups.com>
Message-ID: <117ctos4l3esj0b@corp.supernews.com>

I use quick-and-dirty code like this:

############################################################################
# Get source directory and text file
############################################################################
Root = Tkinter.Tk()
Root.title(programname)
srcdir = tkFileDialog.askdirectory(title='Choose the source directory',
initialdir='C:\\')
srcfile = tkFileDialog.askopenfilename(title='Choose the text file',
initialdir=srcdir)
Root.destroy()



- Robert


<andy at andybak.net> wrote in message
news:1115059445.673382.218000 at g14g2000cwa.googlegroups.com...
> What's the easiest way for a script to throw up simple dialogs such as
> file select and alerts?
>
> I thought there was something in the standard library that didn't need
> TK and was cross-platform but I can't seem to get my Google-fu working
> well enough to find it.
>




From olaamigoquepasa at hotmail.com  Wed May 25 20:17:40 2005
From: olaamigoquepasa at hotmail.com (hawkesed)
Date: 25 May 2005 17:17:40 -0700
Subject: setting up scipy in windows
In-Reply-To: <428b07c3$0$50617$edfadb0f@dread14.news.tele.dk>
References: <1116384514.608584.9180@g49g2000cwa.googlegroups.com>
	<428b07c3$0$50617$edfadb0f@dread14.news.tele.dk>
Message-ID: <1117066659.953966.268160@z14g2000cwz.googlegroups.com>

Thanks to both you guys. I got scipy up and running yesterday. Here are
the steps I went through:
1. I un-installed some non-official pythons. (Plone and ActiveState)
2. I loaded STANDARD Python 2.3.5
3. I loaded Python for Windows extensions.
4. I Loaded Numeric
5. Loaded SCIPY
6. Tested it by typing in pythonwin
>>> from scipy import *
>>>
Then played around with some of the methods. Pretty cool stuff. Thanks
all!



Frithiof Andreas Jensen wrote:
> "hawkesed" <olaamigoquepasa at hotmail.com> skrev i en meddelelse
> news:1116384514.608584.9180 at g49g2000cwa.googlegroups.com...
>
>
> > Scipy looks like just the thing I want, if anyone has got it running on
> > a Windows box I would like to hear how you did it.
>
> With STANDARD Python 2.3 it installs from the Python 2.3 win 32 installers
> and runs.
>
> The only problem I had was that "Numeric" needs to be installed before
> "Scipy" or Scipy will chrash.



From Scott.Daniels at Acm.Org  Mon May 16 12:42:36 2005
From: Scott.Daniels at Acm.Org (Scott David Daniels)
Date: Mon, 16 May 2005 09:42:36 -0700
Subject: Quick Reference from module doc strings.
In-Reply-To: <mailman.27.1116217027.8733.python-list@python.org>
References: <mailman.65.1116085574.29328.python-list@python.org>	<1116199904.205240.58300@g49g2000cwa.googlegroups.com>	<mailman.15.1116204313.8733.python-list@python.org>	<42880d98$1@nntp0.pdx.net>
	<mailman.27.1116217027.8733.python-list@python.org>
Message-ID: <4288c71e@nntp0.pdx.net>

Ron Adam wrote:
> Do you have any feature suggestions, additional information that could 
> go in, something that would extend the content in some way and make it 
> more useful?
> 
> As it stands now, it could be just a module, so you could...
> 
The style is still a sticking point for me -- too many evals (a nasty
lure for evil-doers).

Recall that sys.modules is a dictionary from module names to modules.

Any python object (including a module) will return attributes listed
in a dir(obj) with getattr(obj, attributename).  So, no evals are
needed in this program at all.

I also wonder if you've ever used maxlevel>1.  It seems you'd expand
to way too many names to be useful.

Finally, if you use StringIO (or cStringIO), most of your string
construction can be turned into prints in a way similar to:

     def printnames(namelist, dest=None):
         for name in sorted(namelist, key=str.lower):
             print >>dest, name

     from cStringIO import StringIO

     def textnames(namelist):
         hold = StringIO()
         printnames(namelist, hold)
         return hold.getvalue()

--Scott David Daniels
Scott.Daniels at Acm.Org


From peter at engcorp.com  Tue May 31 20:53:34 2005
From: peter at engcorp.com (Peter Hansen)
Date: Tue, 31 May 2005 20:53:34 -0400
Subject: The need to put "self" in every method
In-Reply-To: <429CE8F4.5070301@lexicon.net>
References: <1117554344.938440.54700@g14g2000cwa.googlegroups.com>
	<mailman.296.1117557471.18027.python-list@python.org>
	<429CE8F4.5070301@lexicon.net>
Message-ID: <ZImdnZjROrr3mgDfRVn-vA@powergate.ca>

John Machin wrote:
> Simon Brunning wrote:
>> Of course, if you *don't* use 'self', you should expect an angly mob
>> with pitchforks and torches outside your castle.
> 
> Wouldn't an angly mob be carrying fishing rods?

No, I rather think they'd be acutely obtuse, right?


From could.net at gmail.com  Thu May 19 04:58:05 2005
From: could.net at gmail.com (could ildg)
Date: Thu, 19 May 2005 16:58:05 +0800
Subject: How to learn OO of python?
In-Reply-To: <kfidnb5vPYqupxHfRVn-ow@comcast.com>
References: <mailman.130.1116402087.8733.python-list@python.org>
	<1116417641.929050.30860@g14g2000cwa.googlegroups.com>
	<mailman.182.1116468589.8733.python-list@python.org>
	<kfidnb5vPYqupxHfRVn-ow@comcast.com>
Message-ID: <311b5ce105051901585138aa6c@mail.gmail.com>

Steven Bethard:
Thank you so much!
Your answer is very very helpful~

On 5/19/05, Steven Bethard <steven.bethard at gmail.com> wrote:
> could ildg wrote:
> > I think decorator is a function which return a function, is this right?
> > e.g. The decorator below if from http://www.python.org/peps/pep-0318.html#id1.
> >
> > def accepts(*types):
> >     def check_accepts(f):
> >         assert len(types) == f.func_code.co_argcount
> >         def new_f(*args, **kwds):
> >             for (a, t) in zip(args, types):
> >                 assert isinstance(a, t), \
> >                        "arg %r does not match %s" % (a,t)
> >             return f(*args, **kwds)
> >         new_f.func_name = f.func_name
> >         return new_f
> >     return check_accepts
> >
> > After I saw all the examples, I concluded that every decorator must
> > define an inner function which takes only one argument, the
> > function to decorate. Is this right?
> 
> It's close, but not quite right.  (I will use the word "function" for
> the moment, but see below for why this is inaccurate.)  Every
> *decorator* must take only one argument, the function to decorate. It is
> not at all necessary that a decorator define an inner function.
> Consider (from [1]):
> 
> def onexit(f):
>      import atexit
>      atexit.register(f)
>      return f
> 
> onexit is a decorator because it takes a function and returns a
> function.  In this case, it happens to be that the same function is
> accepted and returned.
> 
> Note that in the 'accepts' example above, *check_accepts* is the
> decorator, not accepts.  The accepts function is actually a function
> that *returns* decorators.
> 
> Now about that word "function".  Decorators are actually *callables*
> that accept a single *callable* and return a *callable*.  Why does the
> terminology matter?  Because I can construct decorators from classes too
> (from [2]):
> 
> class memoized(object):
>     def __init__(self, func):
>        self.func = func
>        self.cache = {}
>     def __call__(self, *args):
>        try:
>           return self.cache[args]
>        except KeyError:
>           self.cache[args] = value = self.func(*args)
>           return value
>        except TypeError:
>           return self.func(*args)
> 
> Now the memoized decorator can be used just like any other decorator, e.g.:
> 
> @memoized
> def fibonacci(n):
>     if n in (0, 1):
>        return n
>     return fibonacci(n-1) + fibonacci(n-2)
> 
> Note however that memoized is a *callable*, not a *function*.
> 
> STeVe
> 
> [1] http://www.python.org/peps/pep-0318.html
> [2] http://wiki.python.org/moin/PythonDecoratorLibrary
> --
> http://mail.python.org/mailman/listinfo/python-list
>


From nickaddisonuk at yahoo.co.uk  Sun May  1 17:17:00 2005
From: nickaddisonuk at yahoo.co.uk (Nick Addison)
Date: Sun, 01 May 2005 22:17:00 +0100
Subject: Running script in background.
In-Reply-To: <1114930327.902938.204630@z14g2000cwz.googlegroups.com>
References: <1114930327.902938.204630@z14g2000cwz.googlegroups.com>
Message-ID: <42754740$0$83046$ed2619ec@ptn-nntp-reader01.plus.net>

Harlin Seritt wrote:
> Hi,
> 
> I have a script.py that is converted to .exe using py2exe. From another
> script I call script.exe and would like to be able to run this
> script.exe in the background (as well as in console -- giving the user
> some simple options). How can I make this happen?
> 
> thanks,
> 
> Harlin
> 
Have you considered running the exe as a scheduled job? Or you could 
turn it into an NT service. I run quite a few py2exe exes as scheduled 
jobs set up as run once on system start up.

hth

Nick.


From fredrik at pythonware.com  Thu May 19 04:53:18 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 19 May 2005 10:53:18 +0200
Subject: Is Python suitable for a huge, enterprise size app?
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com><1116432325.497438.64580@g49g2000cwa.googlegroups.com><1116433218.495131.71260@g49g2000cwa.googlegroups.com><1116443474.565264.176640@g44g2000cwa.googlegroups.com>
	<7xd5rn93zi.fsf@ruckus.brouhaha.com>
Message-ID: <d6hk4a$fog$1@sea.gmane.org>

Paul Rubin wrote:

>   2) If you want to display a gif image in tkinter, you can make a
>      frame object, put a canvas in it, and put a PhotoImage object
>      onto the canvas, which works fine.  But if you use your own
>      subclass of frame (maybe to add your own gui stuff), for some
>      reason the gif doesn't display in the canvas.

did you read the PhotoImage documentation?  see e.g. the note at the
bottom of this page:

    http://effbot.org/zone/tkinter-photoimage.htm

(this used to be explained in the Python FAQ too, but it looks as if that
was lost in the great FAQ reorganization).

</F> 





From steve at holdenweb.com  Fri May  6 07:14:10 2005
From: steve at holdenweb.com (Steve Holden)
Date: Fri, 06 May 2005 07:14:10 -0400
Subject: properties vs. eval()
In-Reply-To: <1115328861.200050.167030@z14g2000cwz.googlegroups.com>
References: <1115235178.971840.248160@o13g2000cwo.googlegroups.com>	<1115282375.131965.118320@z14g2000cwz.googlegroups.com>
	<1115328861.200050.167030@z14g2000cwz.googlegroups.com>
Message-ID: <d5fj4s$jo4$1@sea.gmane.org>

Bob Rogers wrote:
> So you're saying you don't know the answer?  The question wasn't
> "should I use setattr?"
> 
No, the "*question*" was (paraphrasing slightly) "is [it] possible to 
dispense with the compile step and use eval() alone while setting a 
property" the *answer* was "you should use setattr".

If you don't see that this implies that using eval() is not a good idea 
until other resources have been exhausted, then you need to understand: 
"using eval() is not a good idea until other resources have been exhausted".

regards
  Steve
-- 
Steve Holden        +1 703 861 4237  +1 800 494 3119
Holden Web LLC             http://www.holdenweb.com/
Python Web Programming  http://pydish.holdenweb.com/



From xah at xahlee.org  Sun May 15 05:50:38 2005
From: xah at xahlee.org (Xah Lee)
Date: 15 May 2005 02:50:38 -0700
Subject: Range function
In-Reply-To: <1115951576.138445.51080@z14g2000cwz.googlegroups.com>
References: <1115951576.138445.51080@z14g2000cwz.googlegroups.com>
Message-ID: <1116150638.868535.10690@g14g2000cwa.googlegroups.com>

Here's the Perl code.

----------

#! perl

# http://xahlee.org/tree/tree.html
# Xah Lee, 2005-05

#_____ Range _____ _____ _____ _____

=pod

B<Range>

Range($iMax) generates the list [1, 2, ... , $iMax].

Range($iMin, $iMax) generates the list [$iMin, ... , $iMax].

Range($iMin, $iMax, $iStep) uses increment $iStep, with the last
element in the result being less or equal to $iMax. $iStep cannot be 0.
If $iStep is negative, then the role of $iMin and $iMax are reversed.

If Range fails, 0 is returned.

Example:

 Range(5); # returns [1,2,3,4,5]

 Range(5,10); # returns [5,6,7,8,9,10]

 Range( 5, 7, 0.3); # returns [5, 5.3, 5.6, 5.9, 6.2, 6.5, 6.8]

 Range( 5, -4, -2); # returns [5,3,1,-1,-3]

=cut

sub Range ($;$$) {
if (scalar @_ == 1) {return _rangeFullArgsWithErrorCheck(1,$_[0],1);};
if (scalar @_ == 2) {return
_rangeFullArgsWithErrorCheck($_[0],$_[1],1);};
if (scalar @_ == 3) {return
_rangeFullArgsWithErrorCheck($_[0],$_[1],$_[2]);};
};

sub _rangeFullArgsWithErrorCheck ($$$) {
my ($a1, $b1, $dx) = @_;

if ($dx == 0) {print "Range: increment cannot be zero."; return 0}
elsif ($a1 == $b1) {return [$a1];}
elsif ( ((($b1 - $a1) > 0) && ($dx < 0)) || ((($b1 - $a1) < 0) && ($dx
> 0)) ) {print "Range: bad arguments. You have [$a1,$b1,$dx]"; return
0;}
elsif ((($a1 < $b1) && ($b1 < ($a1 + $dx))) || (($a1 > $b1) && ($b1 >
($a1 + $dx)))) {return [$a1];}
else { return _rangeWithGoodArgs ($a1,$b1,$dx);};
};

sub _rangeWithGoodArgs ($$$) {
my ($a1, $b1, $dx) = @_;
my @result;

if ($a1 < $b1) {for (my $i = $a1; $i <= $b1; $i += $dx) { push
(@result, $i);}; }
else {for (my $i = $a1; $i >= $b1; $i += $dx) { push (@result, $i);};
};
return \@result;
};

#end Range

##########
# test

use Data::Dumper;
print Dumper(Range(5,7,0.3));



From w.ruijter at alumnus.utwente.nl  Wed May 18 17:59:49 2005
From: w.ruijter at alumnus.utwente.nl (wout)
Date: Wed, 18 May 2005 22:59:49 +0100
Subject: Help on slow attribute copy
Message-ID: <428BBAD5.5080005@alumnus.utwente.nl>

Hi there,

I am fairly new to python, the problem is as follows:

newnodes = {}
for i in nodes:
    newnodes[i.label] = i.coordinate

is very slow, which is due to the dots, I know that for functions the 
dot lookup
can be done outside the loop, can this be done for attributes in any 
way? (in such a way that it is fast)
Coordinate is a tuple in this case, filling a dictionary of that size is 
no problem without dots.
I use python 2.0 as shipped with abaqus,  there are about 100000 nodes 
in the current case, and more to come, and the
system can be stuck on this for 15+ minutes :-(

Greetings
Wout




 


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From jerf at jerf.org  Sat May  7 10:29:16 2005
From: jerf at jerf.org (Jeremy Bowers)
Date: Sat, 07 May 2005 10:29:16 -0400
Subject: Need help subclassing Borg
References: <pan.2005.05.07.12.28.34.263372@REMOVETHIScyber.com.au>
	<1115480121.527653.220780@o13g2000cwo.googlegroups.com>
	<pan.2005.05.07.16.42.08.299541@REMOVETHIScyber.com.au>
Message-ID: <pan.2005.05.07.14.29.14.863484@jerf.org>

On Sun, 08 May 2005 02:42:09 +1000, Steven D'Aprano wrote:
> I'm thinking what I might need is a function that generates a Borg-like
> class. So I would do something like:
> 
> Rabbit = MakeBorgClass()
> # Rabbit is now a class implementing shared state
> # all instances of Rabbit share the same state
> Duck = MakeBorgClass()
> # Duck is now a class implementing shared state
> # all instances of Duck share the same state
> # but instances of Duck do not share state with instances of Rabbit
> 
> Problem is, I haven't got the foggiest idea how to implement something
> like that. Am I on the right track? Where do I go from here?

Bengt's answer is better than this track, but this question is worth
answering because it is so wonderfully easy in Python.

Remember class is an executable statement, not a declaration:

Python 2.3.5 (#1, Mar  3 2005, 17:32:12) 
[GCC 3.4.3  (Gentoo Linux 3.4.3, ssp-3.4.3-0, pie-8.7.6.6)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> def makeBorg():
...     class Borg(object):
...             _shared_state = {}
...             def __init__(self):
...                     self.__dict__ = self._shared_state
...     return Borg
... 
>>> Duck = makeBorg()
>>> Rabbit = makeBorg()
>>> d = Duck()
>>> d2 = Duck()
>>> d.cover = "fur"
>>> d2.cover
'fur'
>>> r = Rabbit()
>>> r.cover
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
AttributeError: 'Borg' object has no attribute 'cover'
>>> r.cover = "feathers"
>>> d.cover
'fur'
>>> r2 = Rabbit()
>>> r2.cover
'feathers'
>>> 

(I flipped around the fur and feathers, but don't feel like fixing it :-) )

Now, the problem with this and the reason why Bengt's is more likely
better is that each of these Borg classes is unrelated, so there's no
using issubclass or anything like that. You *could* hack around this, but
it's not worth it. (It is possible to dynamically choose the bases of a
class; you can't do it in the class statement itself, but you can do
something like:

def makeBorg(base = object):
	class Borg(base): 
		etc.

but this is definitely not the best way to go. Still, as above, it does
have its place other times; I've used it to dynamically pick up whether
the user has certain modules installed and add support depending on the
environment. I often do this when I'm writing something currently embedded
in an app I'm writing, but may have use elsewhere outside of the
environment of the app, allowing me to write code that both takes full
advantage of the app environment, while not being completely tied to it.)


From thomas at eforms.co.nz  Sun May  1 22:35:11 2005
From: thomas at eforms.co.nz (Thomas)
Date: Mon, 2 May 2005 14:35:11 +1200
Subject: socket error on windows,  working fine on mac
Message-ID: <20050502023305.B26B937A01@mail.tintz.co.nz>

I am getting socket error for large file transfer on windows (100MB+) 

Working fine for files <50MB.

 

Everything is working fine on mac..

 

File "C:\Python23\lib\httplib.py", line 576, in send

    self.sock.sendall(str)

  File "<string>", line 1, in sendall

socket.error: (10055, 'No buffer space available')

 

 

cheers

Thomas

 

 

 

import httplib, mimetypes

 

def post_multipart(host, selector, fields, files):

    """

    Post fields and files to an http host as multipart/form-data.

    fields is a sequence of (name, value) elements for regular form fields.

    files is a sequence of (name, filename, value) elements for data to be
uploaded as files

    Return the server's response page.

    """

    content_type, body = encode_multipart_formdata(fields, files)

    h = httplib.HTTP(host)

    h.set_debuglevel(0)

    h.putrequest('POST', selector)

    h.putheader('content-type', content_type)

    h.putheader('content-length', str(len(body)))

    h.endheaders()

    #print body;

    h.send(body)

    errcode, errmsg, headers = h.getreply()

    return h.file.read()

 

def encode_multipart_formdata(fields, files):

    """

    fields is a sequence of (name, value) elements for regular form fields.

    files is a sequence of (name, filename, value) elements for data to be
uploaded as files

    Return (content_type, body) ready for httplib.HTTP instance

    """

    BOUNDARY = '----------ThIs_Is_tHe_bouNdaRY_$'

    CRLF = '\r\n'

    L = []

    for (key, value) in fields:

        L.append('--' + BOUNDARY)

        L.append('Content-Disposition: form-data; name="%s"' % key)

        L.append('')

        L.append(value)

    for (key, filename, value) in files:

        L.append('--' + BOUNDARY)

        L.append('Content-Disposition: form-data; name="%s"; filename="%s"'
% (key, filename))

        L.append('Content-Type: %s' % get_content_type(filename))

        L.append('')

        L.append(value)

    L.append('--' + BOUNDARY + '--')

    L.append('')

    body = CRLF.join(L)

    content_type = 'multipart/form-data; boundary=%s' % BOUNDARY

    return content_type, body

 

def get_content_type(filename):

    return mimetypes.guess_type(filename)[0] or 'application/octet-stream'

 

 

import urllib2

import urllib2_file 

#URL = 'http://xxx.xxx.xxx.xxx/UploaderHttp/'

FILE= 'c:/Documents and Settings/Administrator/Desktop/TM_A5_Bulk.pdf';

f = file(FILE, "rb")

data = f.read()

f.close()

 

post_multipart("192.168.100.233","/UploaderHttp/",[('test','valTest')],[('FI
LE1','TM_A5_Bulk.pdf',data)]);

-------------- next part --------------
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From stefan_NOSPAM at NOSPAM_naewe.de  Tue May  3 15:44:35 2005
From: stefan_NOSPAM at NOSPAM_naewe.de (Stefan =?UTF-8?B?TsOkd2U=?=)
Date: Tue, 03 May 2005 21:44:35 +0200
Subject: text strings to binary...
References: <1115149191.862429.51610@g14g2000cwa.googlegroups.com>
Message-ID: <d58k99$f4s$1@f40-3.zfn.uni-bremen.de>

oriana.falco at thalesesec.com wrote:

> Hi,
> 
> I've been working with Python for a bit now but I just came accross a
> problem and I'm not sure how to approach it. I'd like to convert a text
> string into binary data format. I though I'd use the struct module and
> the pack function but I can't get it to work. I'm using Python 2.3.3 in
> Windows XP.

Why don't you post some pieces of your code ?
Maybe someone can help you fix it.

Stefan
-- 
                


From jasondrew72 at gmail.com  Wed May  4 12:27:37 2005
From: jasondrew72 at gmail.com (jasondrew72 at gmail.com)
Date: 4 May 2005 09:27:37 -0700
Subject: A faster method to generate a nested list from a template?
In-Reply-To: <mailman.1.1115216482.29826.python-list@python.org>
References: <117hlf2rvh6q28e@corp.supernews.com>
	<mailman.1.1115216482.29826.python-list@python.org>
Message-ID: <1115224057.531579.70040@z14g2000cwz.googlegroups.com>


Jeff Epler wrote:
> Are there only a few, unchanging templates?  If so, (dynamiclly)
create
> a function for each template.  This will be nearly the fastest you
can
> go in Python, excluding the time to create and byte-compile the
nesting
> function.
>
> # This code is in the public domain
> def make_nesting_expression(l, s):
>     result = []
>     for c in l:
>         if isinstance(c, list):
>             sub, s = make_nesting_expression(c, s)
>             result.append(sub)
>         else:
>             result.append("l[%d]" % s)
>             s += 1
>     print "make_nesting_expression", l, result
>     return "[" + ",".join(result) + "]", s
>
> def make_nesting_function(l):
>     return eval("lambda l: %s" % make_nesting_expression(l, 0)[0])
>
> t = [['a1','a2'],['b1'],['c1'],['d1']]
> l = [1, 2, 3, 4, 5]
> f = make_nesting_function(t)
> print f(l)
>
> Jeff


Nice approach! Though I'm wondering, because the "template" is so close
to the function you're trying to create, why not just create the
function directly? As in:

>>> f5 = lambda p: (p[0:2], p[2], p[3], p[4])
>>> f5(('a', 'b', 'c', 'd', 'e', 'f'))
(('a', 'b'), 'c', 'd', 'e')

Or if you need to be able to remember what the template looks like
(e.g. reading/writing it as a string in a file), you can always create
the function by evaluating a (properly constructed) template string:

>>> f5 = eval("lambda p: (p[0:2], p[2], p[3], p[4])")
>>> f5(('a', 'b', 'c', 'd', 'e', 'f'))
(('a', 'b'), 'c', 'd', 'e')

If you want to avoid lambdas, the same ideas can be used with short
defs, e.g.:
def f5(p): return (p[0:2], p[2], p[3], p[4])

Incidentally, these solutions raise an IndexError if your list is too
short, and silently drop the end of a list that's too long.

That's my keep-it-simple-I-might-understand-it approach.

Jason



From greg at invalid.invalid  Sat May 14 16:29:31 2005
From: greg at invalid.invalid (Greg Krohn)
Date: Sat, 14 May 2005 20:29:31 GMT
Subject: Modifying a built-in function for logging purposes
In-Reply-To: <1116098593.970438.219860@g47g2000cwa.googlegroups.com>
References: <1116098593.970438.219860@g47g2000cwa.googlegroups.com>
Message-ID: <Lcthe.1234$Ri4.1175@newsread1.news.pas.earthlink.net>

qwweeeit at yahoo.it wrote:
> Hi all,
> I wonder if it is possible to change (temporarily) a built-in function
> for logging purposes.
> Let me explain:
> I want to log all the 'open' operations, recording the file to be
> opened, the "mode" (r/w/a...) and (possibly) the module which made the
> call.
> After that the 'open' can carry on following the standard built-in
> path.
> Possibly I don't want to have to modify the source of the application
> to be logged.
> If there is another solution, I am open to any suggestion...
> 
> Bye.
> 

Would this work?

_file = file
def file(path, mode):
     print path, mode
     return _file(path, mode)

-greg


From rkern at ucsd.edu  Thu May  5 20:30:18 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Thu, 05 May 2005 17:30:18 -0700
Subject: F.readline
In-Reply-To: <UP6dnb9wefOrK-ffRVn-3A@speakeasy.net>
References: <000001c551ca$15ddd3b0$6400a8c0@grondor>	<mailman.79.1115336847.29826.python-list@python.org>
	<UP6dnb9wefOrK-ffRVn-3A@speakeasy.net>
Message-ID: <d5ede8$e9k$1@sea.gmane.org>

Erik Max Francis wrote:
> Robert Kern wrote:
> 
>>There is no such command built in. You will have to build it yourself 
>>out of the components that are available.
> 
> linecache is probably what he's looking for.

Well, I'll be darned, indeed it is. Hooray for the time machine.

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From reinhold-birkenfeld-nospam at wolke7.net  Tue May  3 03:07:10 2005
From: reinhold-birkenfeld-nospam at wolke7.net (Reinhold Birkenfeld)
Date: Tue, 03 May 2005 09:07:10 +0200
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <1115102577.942694.191810@z14g2000cwz.googlegroups.com>
References: <d4u60o$akh$1@news2.netvision.net.il>
	<mailman.47.1114818531.14961.python-list@python.org>
	<1114924100.296223.114020@g14g2000cwa.googlegroups.com>
	<1114927892.321086.60190@z14g2000cwz.googlegroups.com>
	<zX%ce.78213$ft1.5056576@phobos.telenet-ops.be>
	<Zj2de.78345$a42.5091422@phobos.telenet-ops.be>
	<mailman.6.1115001137.6583.python-list@python.org>
	<3dmi74F6q7m6hU2@individual.net>
	<mailman.73.1115090620.6583.python-list@python.org>
	<1115094028.508122.174390@l41g2000cwc.googlegroups.com>
	<mailman.78.1115096637.6583.python-list@python.org>
	<1115102577.942694.191810@z14g2000cwz.googlegroups.com>
Message-ID: <3dombnF6vh6ptU1@individual.net>

Dan Bishop wrote:

> Well, I'd deal them into 2 piles, and...
> 
> Damn!  That was an obscure hint!
> 
> Now, how do I open *.gfx files?

You don't directly.

Hint: gfx stands for?

************** SPOILER ****************





















































Graphic*s*.


From flamesrock at gmail.com  Mon May 16 17:40:29 2005
From: flamesrock at gmail.com (flamesrock)
Date: 16 May 2005 14:40:29 -0700
Subject: Like Christ PBBUH Prayed
In-Reply-To: <1116278323.413749.302480@z14g2000cwz.googlegroups.com>
References: <1116096706.696830.275140@g44g2000cwa.googlegroups.com>
	<1116278323.413749.302480@z14g2000cwz.googlegroups.com>
Message-ID: <1116279629.332838.139870@g49g2000cwa.googlegroups.com>

I don't understand.. why is everyone talking about christ on
comp.lang.python? Isn't this not the place?



From DaleWKing at insightbb.nospam.com  Tue May 31 07:27:01 2005
From: DaleWKing at insightbb.nospam.com (Dale King)
Date: Tue, 31 May 2005 11:27:01 GMT
Subject: What are OOP's Jargons and Complexities?
In-Reply-To: <slrnd9a23c.4ns.dformosa@dformosa.zeta.org.au>
References: <1116843761.619249.144790@g47g2000cwa.googlegroups.com>
	<bAske.14563$yx.14338@fe08.lga> <3584469.Aerji1NdQr@yahoo.com>
	<qEuke.24657$NZ1.533@fe09.lga>
	<slrnd95l5i.r5.tassilo.von.parseval@localhost.localdomain>
	<slrnd9a23c.4ns.dformosa@dformosa.zeta.org.au>
Message-ID: <9SXme.22456$Is4.3402@attbi_s21>

David Formosa (aka ? the Platypus) wrote:
> On Tue, 24 May 2005 09:16:02 +0200, Tassilo v. Parseval
> <tassilo.von.parseval at rwth-aachen.de> wrote: 
> 
>>Also sprach John W. Kennedy:
> 
> [...]
> 
> 
>>Most often, languages with strong typing can be found on the functional
>>front (such as ML and Haskell). These languages have a dynamic typing
>>system. I haven't yet come across a language that is both statically and
>>strongly typed, in the strictest sense of the words. I wonder whether
>>such a language would be usable at all.
> 
> 
> Modula2 claims to be both statically typed and strongly typed.  And
> your wonder at its usablity is justified.

I used a variant of Modula-2 and it was one of the best languages I have 
ever used. That strong, static type checking was a very good thing. It 
often took a lot of work to get the code to compile without error. 
Usually those errors were the programmers fault for trying to play fast 
and loose with data. But once you got it to compile it nearly always worked.

-- 
  Dale King


From Florian.Lindner at xgm.de  Mon May  2 17:23:46 2005
From: Florian.Lindner at xgm.de (Florian Lindner)
Date: Mon, 02 May 2005 23:23:46 +0200
Subject: Libraries for creating graphs
Message-ID: <d565or$t9n$04$1@news.t-online.com>

Hello,
I'm looking for libraries to create graphs. I'm not talking about plotting a
function like f(x)=x^2 just plotting a couple of values into a short, maybe
interpolating them. Output should be something like JPEG.

Thx,

Florian


From philippe at philippecmartin.com  Sat May  7 11:58:29 2005
From: philippe at philippecmartin.com (Philippe C. Martin)
Date: Sat, 07 May 2005 15:58:29 GMT
Subject: New Python regex Doc (was: Python documentation moronicities)
References: <1113301533.054410.203710@z14g2000cwz.googlegroups.com>
	<mailman.1813.1113355346.1799.python-list@python.org>
	<1113856843.023012.165500@l41g2000cwc.googlegroups.com>
	<1113908069.264676.207090@g14g2000cwa.googlegroups.com>
	<1115328523.852744.110390@f14g2000cwb.googlegroups.com>
	<1115423751.016177.250650@o13g2000cwo.googlegroups.com>
	<1115444726.627426.172260@g14g2000cwa.googlegroups.com>
Message-ID: <FA5fe.1841$7U.1794@newssvr30.news.prodigy.com>

This is nice! I just might understand regex eventually.


Xah Lee wrote:

> erratum:
> 
> the correct URL is:
> http://xahlee.org/perl-python/python_re-write/lib/module-re.html
> 
>  Xah
>  xah at xahlee.org
> ? http://xahlee.org/



From timothy at open-networks.net  Wed May  4 08:01:53 2005
From: timothy at open-networks.net (Timothy Smith)
Date: Wed, 04 May 2005 22:01:53 +1000
Subject: py2exe and library.zip
In-Reply-To: <maednQTrx_iJLOXfRVn-hA@powergate.ca>
References: <mailman.76.1115095357.6583.python-list@python.org>	<5uadnUTTqv6Iw-rfRVn-qw@powergate.ca>	<mailman.129.1115156250.6583.python-list@python.org>
	<maednQTrx_iJLOXfRVn-hA@powergate.ca>
Message-ID: <4278B9B1.1060500@open-networks.net>

Peter Hansen wrote:

>Timothy Smith wrote:
>  
>
>>Peter Hansen wrote:
>>    
>>
>>>Anything's possible.  Maybe you could explain what you're actually 
>>>trying to accomplish (or the reasons) so we can better understand 
>>>where you're going with this...
>>>
>>>      
>>>
>>exactly what i just stated, i don't want py2exe to zip up it's 
>>library's, but to put them in a sub dir.
>>the reason for this, is so that when users login and update from svn, 
>>they only have to download some tiny pyc files, not a great big zip file 
>>with everything in it ( 99% of which never changes)
>>    
>>
>
>More detail on this version control thing would probably help.  (Things 
>like that are why I asked fo more background... "exactly what I stated" 
>isn't as useful as something like (for example) "I want my app users to 
>use Subversion to retrieve updates to the application without having to 
>download a big zip file".)
>
>Do you know that Subversion has (as I understand it) a fairly 
>intelligent binary file comparison routine, and it will (again, as I 
>understand it) not transmit the entire contents of the zip file but 
>would actually send only the portions that have changed?  At least, 
>that's if the file isn't compressed in some way that prevents this 
>algorithm from working well.  (Note to self: check if zip files that can 
>be in sys.path can be compressed, and if py2exe compresses them.)
>
>Anyway, while this sort of thing isn't directly supported (probably 
>since almost nobody would want to do it, for reasons similar to what 
>Simon has explained), you should be able to work it out yourself.  The 
>.exe produced by py2exe contains a "stub" executable that basically sets 
>  sys.path to point to the .zip file, then runs the main .py which has 
>been integrated into the .exe file (not even compiled to a .pyc, just 
>like normal).  If you modify your main .py to adjust sys.path to point 
>to an external subdirectory, you should be able to leave .py files (or 
>.pyc files) there and use svn to update them.
>
>I'll leave it as an exercise for the reader (mainly because I don't know 
>how to do it offhand) what you should do to prevent py2exe from putting 
>all your files in its zip.  It should probably still put the standard 
>library modules there, since otherwise you'd have little reason to be 
>using py2exe in the first place...
>
>-Peter
>  
>
ideally i'd love to not to have to use py2exe at all, then they can just
update from the stable branch of my svn. the problem with THAT is how to
install python, wx,pysvn,reportlab etc etc on their systems with no
fuss(py2exe convienently packages all dll's together for me). if you
know of a way i can achieve that i'd be your best friend forever.

the whole reason i'm going with the svn updating method is there is no
user interaction required. even getting users to click a single button
to update has proven too much to ask of them :/

the other reason is my particular project gets updated very often, so
you can imagine the combination of users resistant to any kind of
computer use with an environment requiring frequent updating.


i have some other problems to solve before i get to that point, mainly
svn related eg. pysvn whinges because files exist in the working
directory that it wants to update ( with the same name ), only they
aren't under version control.




From kent37 at tds.net  Sat May 28 17:19:34 2005
From: kent37 at tds.net (Kent Johnson)
Date: Sat, 28 May 2005 17:19:34 -0400
Subject: Help with choice of suitable Architecture
In-Reply-To: <1117311160.307176.216430@o13g2000cwo.googlegroups.com>
References: <1117299643.380598.5540@g47g2000cwa.googlegroups.com>
	<mailman.221.1117304620.18027.python-list@python.org>
	<atgh91hlophgsuio8qctrht31q03mght4b@4ax.com>
	<1117311160.307176.216430@o13g2000cwo.googlegroups.com>
Message-ID: <4298e04b$1_1@newspeer2.tds.net>

Rob Cowie wrote:
> I agree with the sentiments that a single XML file is not the way to go
> for storing data that may be accessed concurrently. However, my hands
> are tied.

You might like to see the thread "write to the same file from multiple processes at the same time?" 
for a preview of the issues this raises.
http://groups-beta.google.com/group/comp.lang.python/browse_frm/thread/475d065fa7871e63/c2fc42fefe114d38?hl=en#c2fc42fefe114d38

Kent


From claird at lairds.us  Tue May 31 12:08:03 2005
From: claird at lairds.us (Cameron Laird)
Date: Tue, 31 May 2005 16:08:03 GMT
Subject: Alternative history (was: prime number)
References: <1117421732.677244.237730@g49g2000cwa.googlegroups.com>
	<86wtphtm3f.fsf@guru.mired.org>
Message-ID: <hkdum2-dph.ln1@lairds.us>

In article <86wtphtm3f.fsf at guru.mired.org>, Mike Meyer  <mwm at mired.org> wrote:
			.
			.
			.
>If it isn't a homework assignment, and you're honestly in such, then
>you should know there's been a lot of research in this area, because
>primes are important in cryptographic applications. Once again, google
			.
			.
			.
There's been a lot of research in this area because some minds
burn to grasp the beauty of number theory, and can't stop think-
ing of Number despite blindness, hunger, family, political 
oppression, and the other frailties to which humans are prone.


From borges2003xx at yahoo.it  Tue May 24 09:06:03 2005
From: borges2003xx at yahoo.it (borges2003xx at yahoo.it)
Date: 24 May 2005 06:06:03 -0700
Subject: searching substrings with interpositions
References: <1116926253.186047.195260@g43g2000cwa.googlegroups.com>
	<3fgekjF7lq3qU1@individual.net>
Message-ID: <1116939594.958040.14110@z14g2000cwz.googlegroups.com>

thanx everyone, is what i need.
As Claudio argues, it's a standard problem of dna sequences
comparation.
the next step of my job is to make limits of lenght of interposed
sequences (if someone can help me in this way i'll apreciate a lot)
thanx everyone.
giorgio



From martin at v.loewis.de  Sun May  8 13:56:34 2005
From: martin at v.loewis.de (=?UTF-8?B?Ik1hcnRpbiB2LiBMw7Z3aXMi?=)
Date: Sun, 08 May 2005 19:56:34 +0200
Subject: Q: The `print' statement over Unicode
In-Reply-To: <pan.2005.05.08.15.55.32.165852@jerf.org>
References: <mailman.6.1115221576.29826.python-list@python.org>
	<acnbm18i.fsf@python.net>
	<mailman.135.1115467276.29826.python-list@python.org>
	<427cc8b2$0$26179$9b622d9e@news.freenet.de>
	<mailman.146.1115482306.29826.python-list@python.org>
	<pan.2005.05.07.15.14.07.969179@jerf.org>
	<87r7ghg79t.fsf@pobox.com>
	<pan.2005.05.08.15.55.32.165852@jerf.org>
Message-ID: <427e52d2$0$15902$9b622d9e@news.freenet.de>

Jeremy Bowers wrote:
> Then I'd honor his consistency of belief, but still consider it impolite
> in general, as asking someone to do tons of work overall to save you a bit
> is almost always impolite.

This is not what he did, though - he did not break "the protocol" by
sending in patches by email (which indeed we would reject). Instead, he
said (before) that he cannot contribute because he is
unwilling to/incapable of using a bug tracker. This is an acceptable
position: contributors are volunteers, and he choses not to volunteer.
He then has to accept (in the specific case) that the documentation is
imprecise/incomplete.

More precisely, he is correct that *his* contribution is not welcome,
contrary to my broad statement "contributions are welcome". The
more narrower statement "contributions that follow the guidelines
are welcome" still stands.

Regards,
Martin


From fredrik at pythonware.com  Tue May 10 11:46:13 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 10 May 2005 17:46:13 +0200
Subject: Library Naming Conventions.
References: <1114851378.781754.194030@z14g2000cwz.googlegroups.com><1114860766.488589.152380@o13g2000cwo.googlegroups.com>
	<1115739023.302545.109300@o13g2000cwo.googlegroups.com>
Message-ID: <d5qki6$ac7$1@sea.gmane.org>

chris.lyon at spritenote.co.uk wrote:

> quoting:
>
>       Modules should have short, lowercase names, without underscores.
>
> this still doesn't explain Cookie.

the document you're quoting also says:

    This document was adapted from Guido's original Python Style
    Guide essay[2]

where [2] points to a document that says:

    Module names can be either MixedCase or lowercase.
    There is no unambiguous convention to decide which
    to use. Modules that export a single class (or a number
    of closely related classes, plus some additional support)
    are often named in MixedCase, with the module name
    being the same as the class name (e.g. the standard
    StringIO module). Modules that export a bunch of
    functions are usually named in all lowercase.

</F>





From jeffelkins at earthlink.net  Wed May 11 08:42:23 2005
From: jeffelkins at earthlink.net (jeff elkins)
Date: Wed, 11 May 2005 12:42:23 +0000
Subject: Finding startup files
In-Reply-To: <1115829176.541687.22090@z14g2000cwz.googlegroups.com>
References: <mailman.375.1115827885.29826.python-list@python.org>
	<1115829176.541687.22090@z14g2000cwz.googlegroups.com>
Message-ID: <200505111242.23778.jeffelkins@earthlink.net>

On Wednesday 11 May 2005 04:32 pm, hemagician at gmail.com wrote:
> The following script demonstrates a method that should work for you. I
> believe it is entirely cross-platform.
>
> #! /usr/bin/python
>
> import sys
> import os
>
> print os.path.abspath(os.path.dirname(sys.argv[0]))

Works perfectly, thanks much!

Jeff



From rkern at ucsd.edu  Tue May 17 05:26:22 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Tue, 17 May 2005 02:26:22 -0700
Subject: Python forum
In-Reply-To: <4289B462.10804@softhome.net>
References: <4289B462.10804@softhome.net>
Message-ID: <d6cdar$eeb$1@sea.gmane.org>

Jonas Melian wrote:
> Hi,
> 
> I'm going to say a suggestion, why don't you create a forum like the one
> of Ruby (http://www.rubyforums.com/)? for the novices this is a great
> help, better than a mail list
> 
> It's also worth noting that rubyforums.com has nearly no posts (six
> total) because it takes very just a short time working.
> 
> I know that you have python-list, it's both an email and a usenet list.
> But I think that a forum is great for the learning. The test is in
> gentoo's forums. They are a lot of experienced people answering
> questions without any problem and it goes very well

Various Python web fora have sprung up now and again. None of them ever 
grab much of an audience.

OTOH, if you're volunteering your own time and effort to set one up, I'm 
not going to stop you.

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From simon.brunning at gmail.com  Tue May 10 07:09:42 2005
From: simon.brunning at gmail.com (Simon Brunning)
Date: Tue, 10 May 2005 12:09:42 +0100
Subject: Module on Getting the Date & Time
In-Reply-To: <20050510092100.32410.qmail@web61108.mail.yahoo.com>
References: <20050510092100.32410.qmail@web61108.mail.yahoo.com>
Message-ID: <8c7f10c605051004096e13464d@mail.gmail.com>

On 5/10/05, Sara Khalatbari <sarapythonlist at yahoo.com> wrote:
> Is there a Modules in Python that returns the time &
> date of today when ran?

http://www.google.com/search?q=python+time+date

-- 
Cheers,
Simon B,
simon at brunningonline.net,
http://www.brunningonline.net/simon/blog/


From grante at visi.com  Thu May 12 10:15:42 2005
From: grante at visi.com (Grant Edwards)
Date: Thu, 12 May 2005 14:15:42 -0000
Subject: Finding startup files
References: <mailman.375.1115827885.29826.python-list@python.org>
	<1115829176.541687.22090@z14g2000cwz.googlegroups.com>
	<1184dj36mp5sdc6@corp.supernews.com>
	<mailman.406.1115849233.29826.python-list@python.org>
Message-ID: <1186p8e5nkrj095@corp.supernews.com>

On 2005-05-11, jeff elkins <jeffelkins at earthlink.net> wrote:

> I'm totally new to Python (obvious,yes?) so how might argv[0] fail?

argv[0] contains whatever is put there by the program that
exec'ed you, and can therefore contain just about anything (or
nothing).  It may not contain a full path, and your program's
install directory may not be in your $PATH (it be executed by a
shortcut or symlink).  

If you're controlling how the program is installed and started,
then you're probably safe.

-- 
Grant Edwards                   grante             Yow!  I guess it was all a
                                  at               DREAM... or an episode of
                               visi.com            HAWAII FIVE-O...


From tzot at sil-tec.gr  Wed May 11 10:45:13 2005
From: tzot at sil-tec.gr (Christos TZOTZIOY Georgiou)
Date: Wed, 11 May 2005 17:45:13 +0300
Subject: unicode encoding problem
References: <1114723563.553068.115410@z14g2000cwz.googlegroups.com>
	<42715b3e$0$3362$9b622d9e@news.freenet.de>
Message-ID: <kj64819bd50joscs0nu4p5t1v5ptt58nn0@4ax.com>

On Thu, 28 Apr 2005 23:53:02 +0200, rumours say that "Martin v. L?wis"
<martin at v.loewis.de> might have written:

>In theory, Python should look at sys.stdin.encoding when processing
>the interactive source. In practice, various Python releases ignore
>sys.stdin.encoding, and just assume it is Latin-1. What is
>sys.stdin.encoding on your system?

The difference between theory and practice is that in theory there is no
difference.
-- 
TZOTZIOY, I speak England very best.
"Be strict when sending and tolerant when receiving." (from RFC1958)
I really should keep that in mind when talking with people, actually...


From km at mrna.tn.nic.in  Mon May 16 08:33:27 2005
From: km at mrna.tn.nic.in (km)
Date: Mon, 16 May 2005 18:03:27 +0530
Subject: 20050111: list basics
In-Reply-To: <slrnd8g0vv.4ns.dformosa@dformosa.zeta.org.au>
References: <slrnd8g0vv.4ns.dformosa@dformosa.zeta.org.au>
Message-ID: <20050516123327.GA21016@mrna.tn.nic.in>

Hi all, 

> Perl's pack function will allow you to do direct memory access if you
> ask it to via the "p" and "P" templates.

 can we do direct memory accessing in python also ? 

regards,
KM


From percivall at gmail.com  Wed May 25 20:10:28 2005
From: percivall at gmail.com (Simon Percivall)
Date: 25 May 2005 17:10:28 -0700
Subject: vim configuration for python
In-Reply-To: <d73255$e8b$1@nntp1.jpl.nasa.gov>
References: <d73255$e8b$1@nntp1.jpl.nasa.gov>
Message-ID: <1117066228.282613.22020@g43g2000cwa.googlegroups.com>

I don't know if the binary editions include the Misc directory, but if
you download the Python source you'll find a directory called Misc. In
it, there's a vimrc file.



From cal_2pac at yahoo.com  Sun May 22 16:01:33 2005
From: cal_2pac at yahoo.com (cal_2pac at yahoo.com)
Date: 22 May 2005 13:01:33 -0700
Subject: How to receive events (eg. user mouse clicks) from IE
In-Reply-To: <428f8660$1_1@spool9-west.superfeed.net>
References: <1116476411.853695.235670@g14g2000cwa.googlegroups.com>
	<428c3cbe$1_1@spool9-west.superfeed.net>
	<1116529345.146032.91880@f14g2000cwb.googlegroups.com>
	<428cf5a9$1_1@spool9-west.superfeed.net>
	<1116537405.495521.252570@f14g2000cwb.googlegroups.com>
	<428f5882$1_2@spool9-west.superfeed.net>
	<jDKje.7423$wr.4173@clgrps12>
	<428f8660$1_1@spool9-west.superfeed.net>
Message-ID: <1116792093.323847.312700@g49g2000cwa.googlegroups.com>

> This might make a good candidate for the Cookbook (or there's
> a collection of IE automation examples at win32com.de)
> so anybody else trying to do something similar knows some of the
pitfalls.

This thread has been very valuable for me and has provided
clarifications which I could not get after hours of surfing web
/reading python on win32 / python developer handbook and so on.

Here are more questions that I am encountering
a) the code above will return a click event from an anchor element.
However, I need to identify which anchor element was clicked on.
Similarly, if a user clicks on one cell in HTML table - I need to
determine its identity.
One possible solution to this will be to look at the onClick event
provided by HTML_DocumentEvents and as desribed in msdn library
http://msdn.microsoft.com/library/default.asp?url=/workshop/browser/mshtml/reference/events/events.asp

The problem is that msdn documentation says that in order to identify
the element that was clicked - one has to query on IHTMLWindow2::event
property on iHTMLWindow2 interface to get IEventOBj interface and then
from there - use query interfce to get to the id of the element.

How do I do this in python? ie. I have this code
class Doc_Events(doc_mod.HTMLDocumentEvents):
    def Ononclick(self):
        print 'onClick fired '
and I see onClick being trapped.
Now I need to go and get a reference to the iHTMLWindow2 interface. For
this I need to get a reference to doc_mod (as far as I can see). How do
I get that in the OnonClick method above.

b) You had mentioned PumpWaitingMessages in the previous posting. I
first encountered this on newsgroup postings. None of the standard
books (python on win32 / python developer) seem to explain this in
detail although this seems to be commonly used. Though I understand
this now - my problem is that there seems to be a lack of cohesive
explanation on how python ties up with COM (despite a good chapter 12
on python win32 book). How does a newbie get more info on coding?
Essentially (a) is also a generic question which can be included in a
standard text. If nothing of this sort exists - maybe I will think of
jotting down the notes and posting on a public website.

Roger Upole wrote:
> Reducing the sleep time in the loop also seems to speed things up.
> I'm guessing due to giving both event loops more resources, but
> I can't prove it conclusively.
>
> This might make a good candidate for the Cookbook (or there's
> a collection of IE automation examples at win32com.de)
> so anybody else trying to do something similar knows some of the
pitfalls.
>
>        Roger
>
> "J Correia" <correiajREMOVECAPS at hotmail.com> wrote in message
> news:jDKje.7423$wr.4173 at clgrps12...
> > "Roger Upole" <rupole at hotmail.com> wrote in message
> > news:428f5882$1_2 at spool9-west.superfeed.net...
> >> There does appear to be some sort of conflict between the two
event
> >> hooks.  I wasn't seeing it before since IE was getting google from
my
> >> browser cache and it was coming up almost instantaneously.  As
soon
> >> as I switched the URL to a page that loads slowly, I got the same
> >> result.
> >>
> >>    Adding win32gui.PumpWaitingMessages() to the wait loop
> >> seems to allow both event hooks to run without blocking each
other.
> >>
> >>      Roger
> >
> > I added that line to the wait loop and while it does indeed speed
it
> > up dramatically (in 10 tests: min = 13 sec; max = 33, ave ~ 20
secs)
> > it's still nowhere near the 1-2 secs it takes without hooking the
> > IE events.  I also can't explain the wide differences between min
> > and max times since they seem to occur randomly
> > (e.g. min occurred on 7th run, max on 4th).
> >
> > I assume that that response time won't be adequate for the original
> > poster's needs, due to the slowdown in browsing for his users.
> >
> > Jose
> >
> >
> >
> >
> >
>
>
>
>
> ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet
News==----
> http://www.newsfeeds.com The #1 Newsgroup Service in the World!
>100,000 Newsgroups
> ---= East/West-Coast Server Farms - Total Privacy via Encryption =---



From tiissa at nonfree.fr  Tue May 17 15:44:57 2005
From: tiissa at nonfree.fr (tiissa)
Date: Tue, 17 May 2005 21:44:57 +0200
Subject: Markov chain with extras?
In-Reply-To: <1116333014.950383.310040@g44g2000cwa.googlegroups.com>
References: <1116278880.976106.191780@o13g2000cwo.googlegroups.com>
	<1116283144.051195.193370@g44g2000cwa.googlegroups.com>
	<1116333014.950383.310040@g44g2000cwa.googlegroups.com>
Message-ID: <428a49bb$0$31079$626a14ce@news.free.fr>

temp at mclift.fsnet.co.uk wrote:
> I think is more easy explained as two linked markov chains. So given
> one list the other can be generated.

'Given one list sounds' like an observation (and this sound like an 
order 2 hmm).
But I'm not sure what exactly you want to do with your markov chain. Do 
you want the probability distribution at each time step or some value ?
In this case, I'd do something like:

#### hmm.py
from random import random

def St_given_St1_St2_Ot(St1,St2,Ot):
	p0=0.5*St1*St2+0.25*St1+0.125*St2+0.0625
	return Ot and p0 or 1-p0

def decision(p):
	return (random()>p) and 1 or 0

def hmm(LO,LS):
	for ot in LO[2:]:
		p=St_given_St1_St2_Ot(LS[-1],LS[-2],ot)
		LS.append(decision(p))
	return LS

LO1=(-1,-1,1,0,0,0,1,1)
LS1=[1,0]
print ''.join(map(str,hmm(LO1,LS1)))

LO2=(0,)*50
LS2=[1,1]
print ''.join(map(str,hmm(LO2,LS2)))

LO3=(1,)*50
LS3=[1,1]
print ''.join(map(str,hmm(LO3,LS3)))
####


Which gives hours of fun looking at random numbers:

$ python hmm.py
10111101
11111111111111111111111111100000000000001000000000
11011011011011011011010110011011011011011010101101
$ python hmm.py
10101011
11111111111111111111111111111111000000000000000111
11011010011010100011010110110011001101101101011010
$ python hmm.py
10100011
11111111111111111111111111111111111111111111111111
11011010110011001101011011011101010110101101101011
$ python hmm.py
10111101
11101010000000000000000000000000000000000000000001
11011001101101011010110111010101010110110110011101
$ python hmm.py
10100011
11111111111111111111111111111111111111111111111111
11010110110110110011011010110011010011011011011010
$


Instead of generating the whole sequence, you can wrap it in an 
iterator. And the observations list can also be an iterator (generated 
with another chain if you like).

HTH


From kostem at gmail.com  Mon May 23 17:44:16 2005
From: kostem at gmail.com (kostem)
Date: 23 May 2005 14:44:16 -0700
Subject: ClientForm question
Message-ID: <1116884656.597169.85640@g47g2000cwa.googlegroups.com>

Hi,
I need some help on using ClientForm to post to cgi and getting
response. I have done this many times and it worked very well until
now. I have contacted the webmaster of the page I'm interested in an
this is the response I got:

> Indeed, a simple wget does _not_ do the trick for
> our servers.
> You must start by doing a POST (e.g. not a GET) with
> the
> form data. From what i can guess about the python
> code it
> seems to be doing the post correctly.
>
> The response page to that form is a very short page
> that
> reloads another page (using javascript). This page
> will eventually
> contain the resulting webpage. You should try
> reloading it until
> it no longer tells you that your job is queued or
> processing.
> Use a nice poll timeout, say 10 every seconds. If
> the job
> takes a long time (or the queue is full) the page
> will take
> a few seconds to load. This is intentional, as the
> cgi-script in this period automatically polls the
> status of
> the job, and issues a javascript re-load if it
> finishes
> within the time of the page-load (now showing the
> result).
>
> Hope this helps....

The post I do returnes and error from the python code saying there is
no form field called xxx but actually it exists in the form.

Any help is appreciated, thanks for your time...



From steven.bethard at gmail.com  Sun May 29 11:46:40 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Sun, 29 May 2005 09:46:40 -0600
Subject: Newbie learning OOP
In-Reply-To: <1117374143.284962.3080@z14g2000cwz.googlegroups.com>
References: <1117374143.284962.3080@z14g2000cwz.googlegroups.com>
Message-ID: <BPqdnWZMI59AfgTfRVn-pA@comcast.com>

LenS wrote:
> class names:
>     def __init__(self, format = "F"):
>         self.format = format
> 
>     def namesplit(self, name):
>         if self.format == "F":
>             self.namelist = name.split()
>             self.first = self.namelist[0]
>             self.init = self.namelist[1]
>             self.last = self.namelist[2]
>         else:
>             self.namelist = name.split()
>             self.first = self.namelist[1]
>             self.init = self.namelist[2]
>             self.last = self.namelist[0]
> 
>         return self.first, self.init, self.last
> 
>     def fjoin(self):
>         self.namestring = self.first + ' ' + self.init + ' ' +
> self.last
> 
>     def ljoin(self):
>         self.namestring = self.last + ' ' + self.first + ' ' +
> self.init
> 
>             
> Any comments appreciated.

Seems to me like you really want a Name object, not a Names object. 
Note that fjoin() and ljoin() seem to be methods associated with an 
instance consisting of 'first', 'init' and 'last' attributes.  But your 
constructor does not provide such attributes, so a call to fjoin() or 
ljoin() immediately after creating a new names() object will fail with 
an AttributeError.  I would move the assignment of 'first', 'init' and 
'last' into the constructor, e.g. something like:

py> class Name(object):
...     def __init__(self, name, format='F'):
...         if format == 'F':
...             self.first, self.init, self.last = name.split()
...         else:
...             self.last, self.first, self.init = name.split()
...     def first_str(self):
...         return ' '.join([self.first, self.init, self.last])
...     def last_str(self):
...         return ' '.join([self.last, self.first, self.init])
...
py> n = Name('Steven John Bethard')
py> n.first_str()
'Steven John Bethard'
py> n.last_str()
'Bethard Steven John'
py> n = Name('Bethard Steven John', 'L')
py> n.first_str()
'Steven John Bethard'
py> n.last_str()
'Bethard Steven John'

You might consider passing a function instead of a string instead of the 
format parameter:

py> def first_splitter(name):
...     return name.split()
...
py> def last_splitter(name):
...     names = name.split()
...     return names[1:] + names[:1]
...
py> class Name(object):
...     def __init__(self, name, splitter=first_splitter):
...         self.first, self.init, self.last = splitter(name)
...     def first_str(self):
...         return ' '.join([self.first, self.init, self.last])
...     def last_str(self):
...         return ' '.join([self.last, self.first, self.init])
...
py> Name('Steven John Bethard').first_str()
'Steven John Bethard'
py> Name('Bethard Steven John', last_splitter).first_str()
'Steven John Bethard'

This means you don't have to keep track of a mapping between strings and 
functions; you just pass the function objects themselves.

STeVe


From Scott.Daniels at Acm.Org  Thu May 12 12:38:19 2005
From: Scott.Daniels at Acm.Org (Scott David Daniels)
Date: Thu, 12 May 2005 09:38:19 -0700
Subject: Unique Elements in a List
In-Reply-To: <87mzr0evga.fsf@titan.staselog.com>
References: <1115676903.432187.294910@z14g2000cwz.googlegroups.com>
	<mailman.241.1115681580.29826.python-list@python.org>
	<87psvzikjk.fsf@titan.staselog.com> <d5qu8p$2iq$1@panix2.panix.com>
	<87mzr0evga.fsf@titan.staselog.com>
Message-ID: <42838037$1@nntp0.pdx.net>

Edvard Majakari wrote:
> I realized that, but maybe I should've pointed it out too. For the OP if
> he/she is unaware - notation O(N^2) (big O n squared) means the computing time
> of the algorithm increases exponentially (where exponent is 2) relative to the
> size of the input.
Normally this is called a polynomial, rather than exponential increase.
Exponential increases are typically of the form (C^N) (they are all
equivalent).
Polynomial times are hallways characterized by their largest exponent,
So you never call something O(N^3 - N^2) Since, as N gets large enough,
The N^2 term shrinks to non-existence.

     http://en.wikipedia.org/wiki/Exponential_time

 > ... generally one should avoid using exponential O(n^k) (where k > 1)

Again polynomial, not exponential time.  Note that there is no
polynomial time algorithm with (k < 1), since it takes O(n) time
to read the problem.


--Scott David Daniels
Scott.Daniels at Acm.Org



From jabel at plus.net  Fri May 27 04:19:23 2005
From: jabel at plus.net (John Abel)
Date: Fri, 27 May 2005 09:19:23 +0100
Subject: More Rewrite Request Within SocketServer?
In-Reply-To: <7xacmhgkm7.fsf@ruckus.brouhaha.com>
References: <mailman.163.1117179489.18027.python-list@python.org>	<7xr7ftkt91.fsf@ruckus.brouhaha.com>	<mailman.164.1117180279.18027.python-list@python.org>
	<7xacmhgkm7.fsf@ruckus.brouhaha.com>
Message-ID: <4296D80B.1020305@plus.net>

Paul Rubin wrote:

> If verify_request is finished before the new thread starts, then I'd
>
>think it could set a flag and the new thread could find it.  You get a
>race condition only if both threads are trying to mess with the flag
>simultaneously.
>  
>
Hmm, I think you're right.  Thanks!

J


From Scott.Daniels at Acm.Org  Wed May  4 11:52:43 2005
From: Scott.Daniels at Acm.Org (Scott David Daniels)
Date: Wed, 04 May 2005 08:52:43 -0700
Subject: Read / Write image file
In-Reply-To: <mailman.125.1115151448.6583.python-list@python.org>
References: <mailman.634.1115148003.6582.python-list@python.org>
	<mailman.125.1115151448.6583.python-list@python.org>
Message-ID: <4278e9c1$1@nntp0.pdx.net>

phil wrote:
>>
>> By the way, what is 'rb' and 'wb' ?
>>
> 
> Read Binary, Write Binary
> In Win32 the default is text mode which
> will screw up binary files
> 
In fact, this is not just for Windows.  Linux / Unix is unusual
using the originally non-standards-conforming line feed ('\n')
character as a line separator.  Various different OS's define
text files in different ways.  The distinction between binary
and text is a C standards thing, not a Windows goof.  Heaven
knows I dislike a lot of what Microsoft has done in the way
of interfering with standard ways of doing things, but their
end-of-line convention is not one of those things.  The use
of the extension ".doc" was such a deliberate violation of
standards.  Note older Apple files used '\r' as a line separator,
Tenex used \r\n, or \037, some systems used a line count (leaving
no end-of-line string), and so on....

It is a good idea to provide an indication of whether a file
is binary or text to the file system; the clue could guide
compression information.

-Scott David Daniels
Scott.Daniels at Acm.Org




From tomlis at notmyisp.pl  Mon May 23 06:39:00 2005
From: tomlis at notmyisp.pl (Tomasz Lisowski)
Date: Mon, 23 May 2005 12:39:00 +0200
Subject: Strange behaviour of floating point constants in imported modules
Message-ID: <4291b2c0$1@news.home.net.pl>

Hi,

We are distributing our Python application as the short main script (.py 
file) and a set of modules compiled to the .pyc files. So far, we have 
always treated .pyc files as portable between platforms, but recently we 
have discovered an annoying problem. In a module, there is the following 
code fragment:

Deg2Rad = math.pi/180.0
angleEPS = 0.5
angle0B = angleEPS*Deg2Rad

which calculates 'angle0B' as the angle of a half of a degree, converted 
to radians. The module has been compiled on an English Windows XP 
machine, and then tested on a Polish Windows XP workstation.

What was our astonishment, when various exceptions started to be raised 
on a test machine (no problem on the original English-version Windows 
XP). We have traced them to the fact, that both angleEPS and angle0B 
were found to be ZERO (!!!), whereas in reality, angle0B is about 0.008. 
And this all happened silently, without any error during the import of 
the module!

What's the reason of this error? I start thinking, that it may be 
related to the fact, that the decimal point on the Enlish Windows XP is 
the '.' character, and on the Polish one - ','.

Is there a good method to avoid this kind of problems? How to make such 
distributed modules really portable?

Thanks in advance
-- 
Tomasz Lisowski


From RLG101166 at yahoo.com  Tue May 24 10:48:47 2005
From: RLG101166 at yahoo.com (RLG101166 at yahoo.com)
Date: 24 May 2005 07:48:47 -0700
Subject: I want to ask you the most important question of your life. The
	question is: Are you saved? It is not a question of how good
	you are, nor if you are a church member,
	but are you saved? Are you sure you will go to Heaven when you die? The
	reason some people don't know for sure if they are going to
	Heaven when they die is because they just don't know. The good
	news is that you can know for sure you are going to Heaven. May
	24, 2005 10:49:20 am
Message-ID: <1116946127.220677.235770@o13g2000cwo.googlegroups.com>


THE MOST IMPORTANT QUESTION OF YOUR LIFE

This is the most important question of your life.

The question is: Are you saved?

It is not a question of how good you are, nor if you
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what happens you are on your way to Heaven.


Praise the Lord!
Servant of the Lord Jesus Christ
Ronald L. Grossi


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From bokr at oz.net  Fri May  6 23:00:54 2005
From: bokr at oz.net (Bengt Richter)
Date: Sat, 07 May 2005 03:00:54 GMT
Subject: Reference to self not passed to member function
References: <200505061533.02116.jstroud@mbi.ucla.edu>
	<mailman.119.1115420848.29826.python-list@python.org>
Message-ID: <427c2a33.869538890@news.oz.net>

On Sat, 7 May 2005 01:06:31 +0200, "Fredrik Lundh" <fredrik at pythonware.com> wrote:

>James Stroud wrote:
>
>> I did this:
>>
>> py> class bob(object):
>> ...   def __init__(self,**kwargs):
>> ...     for fname,func in kwargs.items():
>> ...       setattr(self, fname, lambda *args : func(*args))
>> ...
>> py> def doit():
>> ...   print "wuzzup?"
>> ...
>> py> abob = bob(doit=doit)
>> py>
>> py> abob.doit()
>> wuzzup?
>>
>> Much to my surprise, this works fine.
>
>why is that surprising?  "doit" is a callable, you wrap it in another
>callable, and then you store it in an attribute.
>
>that's no different from storing a integer as an attribute, and it
>sure doesn't turn your callable into an instance method.
>
>> 1. What exactly is going on?
>
>see above.
>
>> 2. How can I get ref to self passed to doit() if I want it to?
>
>try using this bob instead:
>
>    import new
>
>    class bob(object):
>        def __init__(self, **kwargs):
>            for fname, func in kwargs.items():
>                setattr(self, fname, new.instancemethod(func, self, bob))
>
ISTM "instancemethod" doesn't really tell the story of what that usage means, which is actually
storing a bound method as an attribute of the instance it _happens_ to be bound to.
I.e., this "instancemethod" is a bound method that could be stored as an attribute of _anything_
and if used as a callable the function would see the same bound "self" no matter where the bound
method was picked up from (well, unless someone perversely interfered with some hack ;-)

I am wondering whether anyone mistakenly thinks that there is a dynamic binding process
involved at the time of the attribute access for the instancemethod, as there is for
an ordinary method. Of course I know you know how to mess with the class to make function
attributes of instances get dynamically bound as if they were class attributes accessed
via the instance, but I wonder if others appreciate this distinction, or would be surprised by e.g.,

 >>> import new
 >>>
 >>> class bob(object):
 ...     def __init__(self, **kwargs):
 ...         for fname, func in kwargs.items():
 ...             setattr(self, fname, new.instancemethod(func, self, bob))
 ...
 >>> def m(self, *args):
 ...     return self, args
 ...
 >>> b = bob(bm=m)
 >>> vars(b)
 {'bm': <bound method bob.m of <__main__.bob object at 0x02EF16EC>>}
 >>> b.bm('hi')
 (<__main__.bob object at 0x02EF16EC>, ('hi',))
 >>> bmg = b.bm
 >>> bmg('hello')
 (<__main__.bob object at 0x02EF16EC>, ('hello',))
 >>> class C: pass
 ...
 >>> c=C()
 >>> c.m = b.bm
 >>> c.m('greets')
 (<__main__.bob object at 0x02EF16EC>, ('greets',))
 >>> C.M = b.bm
 >>> C.M('saludos')
 (<__main__.bob object at 0x02EF16EC>, ('saludos',))
 >>> c.M('amigos')
 (<__main__.bob object at 0x02EF16EC>, ('amigos',))

Obviously "self" has nothing to do with c or C etc.

Regards,
Bengt Richter


From aahz at pythoncraft.com  Mon May 16 01:18:25 2005
From: aahz at pythoncraft.com (Aahz)
Date: Sun, 15 May 2005 22:18:25 -0700
Subject: BayPIGgies: May 19, 7:30pm (FIRST meeting at Google)
Message-ID: <20050516051825.GA4426@panix.com>

NOTE: we are no longer meeting at Stanford; the May meeting is at
Google in Mountain View.


The next meeting of BayPIGgies will be Thurs, May 19 at 7:30pm.

NOTE: to celebrate our first meeting at Google, Google will be providing
a buffet dinner starting at 6:45pm.

Alex Martelli will be repeating his OSCON/PyCon presentations about OOP
and design patterns -- with improvements!

BayPIGgies meetings alternate between IronPort (San Bruno, California)
and Google (Mountain View, California).  For more information and
directions, see http://www.baypiggies.net/


Advance notice: The June 9 meeting agenda has been set.  Drew Perttula
will be talking about his Python-based lighting system controller.

Advance notice: The July 14 meeting agenda has not been set.  Please send
e-mail to baypiggies at baypiggies.net if you want to suggest an agenda (or
volunteer to give a presentation).
-- 
Aahz (aahz at pythoncraft.com)           <*>         http://www.pythoncraft.com/

"And if that makes me an elitist...I couldn't be happier."  --JMS


From holbertr at dma.org  Wed May 11 09:14:38 2005
From: holbertr at dma.org (Rick Holbert)
Date: Wed, 11 May 2005 09:14:38 -0400
Subject: Put a file on an ftp server over ssl
References: <1115749959.870607.20720@o13g2000cwo.googlegroups.com>
	<mailman.312.1115754553.29826.python-list@python.org>
	<1115755428.196173.213360@f14g2000cwb.googlegroups.com>
	<1115805483.903002.109830@g14g2000cwa.googlegroups.com>
Message-ID: <d5t0hn$b8l$1@charm.magnus.acs.ohio-state.edu>

Have a look at Putty's pscp and PySCP...

http://www.chiark.greenend.org.uk/~sgtatham/putty/
http://py.vaults.ca/apyllo.py/990075885.195097684.69935243

Rick

Lars wrote:

> Daniel,
> 
> Why don't you just use the 'sftp' command line program, it's available
> for all unixes and I bet you can find a build for windows to? Then you
> could just do an os.system(..) and be done with it.
> 
> Cheers!
> Lars



From gnb at itga.com.au  Tue May 17 22:46:54 2005
From: gnb at itga.com.au (Gregory Bond)
Date: Wed, 18 May 2005 12:46:54 +1000
Subject: processing a Very Large file
In-Reply-To: <118k530sl6kve5c@corp.supernews.com>
References: <118k530sl6kve5c@corp.supernews.com>
Message-ID: <taae6d.6v8.ln@lightning.itga.com.au>

DJTB wrote:
> Hi,
> 
> I'm trying to manually parse a dataset stored in a file. The data should be
> converted into Python objects.

In addition to what the others have mentioned, this sort of problem is 
pretty easy to do with a C coded extension type, if you have (or can 
buy/borrow) any C skills. The result is waaaay more efficient in time 
and memory, particularly if you actually don't wind up looking at most 
elements.

But Robert's solution (use iterators/generators rather than store them 
all in a list) is probably best/quickest if that is possible for your app.


From mefjr75 at hotmail.com  Sat May 14 19:11:16 2005
From: mefjr75 at hotmail.com (M.E.Farmer)
Date: 14 May 2005 16:11:16 -0700
Subject: A new to Python question
In-Reply-To: <meydnQ9jW8rD5RvfRVn-uA@comcast.com>
References: <1116088663.428932.130860@g43g2000cwa.googlegroups.com>
	<rfnhl2-ig5.ln1@Bernd.Nawothnig.dialin.t-online.de>
	<1116093118.599403.35940@g14g2000cwa.googlegroups.com>
	<tsKdnfF2xaKu3BvfRVn-iQ@comcast.com>
	<1116102355.715816.192840@z14g2000cwz.googlegroups.com>
	<b_udnUJIuPqb_hvfRVn-hw@comcast.com>
	<b_udnX1IuPoi_hvfRVn-hw@comcast.com>
	<1116107944.677219.17980@o13g2000cwo.googlegroups.com>
	<meydnQ9jW8rD5RvfRVn-uA@comcast.com>
Message-ID: <1116112276.699739.6160@o13g2000cwo.googlegroups.com>

Ok I give up you have convinced me. Of what I am not sure ;)
Anyway I have always viewed :
a,b,c= (1,2,3)
as unpacking a tuple
and :
(a,b,c) = (1,2,3)
as creation of a tuple
It was a false assumption, I have used Python for years and have never
written an unpacking as:
(a,b,c) = (1,2,3)
I have always put parens around my tuples I always thought that a tuple
was a parens with at least one comma ;)
It is just not something I have done, it seems counter to my thinking ,
till I read from Bengt it is the commas that make the tuple not the
parens.
It all makes sense now, but if they are not needed I think they that
should be avoided for clarity.
Steve thanks for your time. I always learn a little from you ;)
M.E.Farmer



From sam_spam_cat at comcast.net  Sun May 29 18:44:16 2005
From: sam_spam_cat at comcast.net (Sam the Cat)
Date: Sun, 29 May 2005 18:44:16 -0400
Subject: network ping
Message-ID: <4LednU5KFIZc2AffRVn-3Q@comcast.com>

Besides calling the external ping utility -- is there a way native to python
to execute a similar utility ?




From usenet at datahansa.com  Mon May 23 16:57:52 2005
From: usenet at datahansa.com (Oleg Paraschenko)
Date: 23 May 2005 13:57:52 -0700
Subject: Comparing 2 similar strings?
References: <24a6d$428b9c10$d1b717f8$2300@PRIMUS.CA>
Message-ID: <de21d442.0505231257.140e2a1c@posting.google.com>

Hello William,

William Park <opengeometry at yahoo.ca> wrote in message
news:<24a6d$428b9c10$d1b717f8$2300 at PRIMUS.CA>...
> How do you compare 2 strings, and determine how much they are "close" to
> each other?
> ...

  If your strings are between 1 and 16 Kb, look at GetReuse SDK:

http://getreuse.com/sdk/

  It has Perl and Python bindings. You might be interested in the
latter as you posted to comp.lang.python.

  I can't disclosure the algorithm. Here is an excerpt from the
home page: The formula for the calculation of the similarity is
based on the scientific research. Any other "good" method of
calculations should produce results that are equivalent in some
terms to the GetReuse results.

-- 
olpa@  http://datahansa.com/  XML publishing and documentation management
http://uucode.com/blog/  Generative Programming, XML, TeX, Scheme


From claird at lairds.us  Wed May 25 16:08:05 2005
From: claird at lairds.us (Cameron Laird)
Date: Wed, 25 May 2005 20:08:05 GMT
Subject: Has ComboBox ctrl in Tkinter?
References: <d70vik$snj$1@sea.gmane.org>
	<mailman.78.1117005973.18027.python-list@python.org>
Message-ID: <t42fm2-hm3.ln1@lairds.us>

In article <mailman.78.1117005973.18027.python-list at python.org>,
Fredrik Lundh <fredrik at pythonware.com> wrote:
>"????????" <dreamingpython at 163.com> wrote:
>
>>i have not find the ComboBox in Tkinter,has it? where to get the doc about
>> how to use combobox ctrl?
>
>the Tix add-on contains a combobox:
>
>    http://docs.python.org/lib/node727.html
>
>see
>
>    http://docs.python.org/lib/node725.html
>
>for some information on how to check for a working Tix install.
>
>if you cannot get Tix to work (or don't want to use it), there's a combobox in
>the bwidgets package as well:
>
>    http://tkinter.unpythonic.net/bwidget/
>
></F> 
>
>
>

There are also several pure-Tk implementations <URL:
http://wiki.tcl.tk/combobox >, including Bryan Oakley's
popular one, all of which can be used directly from 
Tkinter.


From flupke at nonexistingdomain.com  Mon May 23 05:30:31 2005
From: flupke at nonexistingdomain.com (flupke)
Date: Mon, 23 May 2005 09:30:31 GMT
Subject: firebird and unicode
In-Reply-To: <5w9ke.98690$Ir4.5630011@phobos.telenet-ops.be>
References: <2u5ke.98532$384.5621810@phobos.telenet-ops.be>
	<5w9ke.98690$Ir4.5630011@phobos.telenet-ops.be>
Message-ID: <Xohke.98900$xE4.5566584@phobos.telenet-ops.be>

flupke wrote:
<snip>

I solved it by getting the latest py files from CVS and overwriting the 
existing ones. It gave an Attribute error but that was gone after 
commenting this line:
#isc_info_isc_version             =  _k.isc_info_isc_version

I'm not sure if this is a safe way of working. It's like jumping over a 
fence with barb wire. You know your balls might be in danger but 
sometimes you got to take a risk :)

I hope i don't end up singing with a funny voice ;)

Thanks,
Benedict Verheyen


From ggg at zzz.it  Fri May 20 03:53:43 2005
From: ggg at zzz.it (deelan)
Date: Fri, 20 May 2005 09:53:43 +0200
Subject: MySQLdb and Unicode
In-Reply-To: <d6k415$ivu$01$1@news.t-online.com>
References: <d6k415$ivu$01$1@news.t-online.com>
Message-ID: <0uh0m2-i76.ln1@news.interplanet.it>

Achim Domma (Procoders) wrote:
> Hi,
> 
> I try to write unicode strings to a MySQL database via MySQLdb. 
> According to the documentation I should pass 'utf-8' as keyword 
> parameter to the connect method. But then I get the following error:
> 
(...)
> 
> 
> I'm using version 1.2 of MySQLdb. Any hint what I'm doing wrong?

this is changed in 1.2, from the Connection class docstring:

"use_unicode"

''If True, text-like columns are returned as unicode objects
using the connection's character set.  Otherwise, text-like
columns are returned as strings.  columns are returned as
normal strings. Unicode objects will always be encoded to
the connection's character set regardless of this setting.''

-- 
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
<#me> a foaf:Person ; foaf:nick "deelan" ;
foaf:weblog <http://blog.deelan.com/> .


From rkern at ucsd.edu  Tue May 10 07:57:56 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Tue, 10 May 2005 04:57:56 -0700
Subject: why this happend using model random?
In-Reply-To: <d5q707$lg3$1@news.yaako.com>
References: <d5q0ro$5lb$1@news.yaako.com>	<mailman.271.1115720549.29826.python-list@python.org>
	<d5q707$lg3$1@news.yaako.com>
Message-ID: <d5q76a$o13$1@sea.gmane.org>

flyaflya wrote:
> Robert Kern wrote:
> 
>>flyaflya wrote:
>>
>>
>>>from random import *
>>>
>>>col = [0 for i in range(10)]
>>>a = [col for  i in range(10)]
>>
>>
>>This is the problem. The list "a" now has ten references to the same 
>>object "col". They are not copied.
>>
>>
>>>seed()
>>>for i  in range(10):
>>>     for j in  range(10):
>>>         a[i][j] = randint(0, 100)
>>
>>
>>So every time you index into "a[i][j]" you are always getting "col[j]".
>>
> 
> thanks,I see,I know about reference and copy,but when is it a copy?when 
> a reference?how can I get a copy when need?

Usually, references get passed around wherever possible. Just putting 
"col" into the list comprehension like you did will never copy.

If you need a copy of a list, you could do "col[:]" or "list(col)". More 
generally, see the "copy" module.

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From Michael.Coll-Barth at VerizonWireless.com  Thu May 12 09:52:32 2005
From: Michael.Coll-Barth at VerizonWireless.com (Michael.Coll-Barth at VerizonWireless.com)
Date: Thu, 12 May 2005 09:52:32 -0400
Subject: Launch file in Notepad
Message-ID: <20050512135235.06FA91E400A@bag.python.org>


try b1="c:/test.txt"

It seems to work for me on Windows 2000.

-----Original Message-----
From:
python-list-bounces+michael.coll-barth=verizonwireless.com at python.org
[mailto:python-list-bounces+michael.coll-barth=verizonwireless.com at pytho
n.org]On Behalf Of George
Sent: Thursday, May 12, 2005 9:41 AM
To: python-list at python.org
Subject: Launch file in Notepad


Newbie question:

I'm trying to lauch Notepad from Python to open a textfile:

import os
b1="c:\test.txt"
os.system('notepad.exe ' + b1)

However, the t of test is escaped by the \, resulting in Notepad trying 
to open "c: est.txt".

How do I solve this?

(By the way, b1 comes from a command line parameter, so the user enters 
c:\test.txt as command line parameter.)

George
-- 
http://mail.python.org/mailman/listinfo/python-list
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From theller at python.net  Tue May 24 11:22:16 2005
From: theller at python.net (Thomas Heller)
Date: Tue, 24 May 2005 17:22:16 +0200
Subject: Running in Release or Debug version of the python interpreter?
In-Reply-To: <d6v71s$9ds$1@news.hispeed.ch>
References: <d6v71s$9ds$1@news.hispeed.ch>
Message-ID: <429346A8.2080102@python.net>

Raphael Zulliger schrieb:
> Hi
> 
> I have to check wheter a .py script is run within the debug or the 
> release version of an embedded python interpreter (in short, wheter 
> python24_d.dll or python24.dll is in use).
> 
> long version: I'm using ctypes to load my own dll. There exists 2 
> version of this dll - a debug and a release version (where one is linked 
> against debug C runtime dll and the other to release C runtime dll). Now
> I have to change the name of the dll I want to be loaded by ctypes... 
> But how can I find out which of the dll I have to load?!
> 
> Thanks in advance!
> Raphael Zulliger

You could use imp.get_suffixes(). In a release build the returned list 
will contain these entries
('.pyd', 'rb', 3), ('.dll', 'rb', 3)
in a debug build that will be
('_d.pyd', 'rb', 3), ('_d.dll', 'rb', 3)

Another way would be to look at the filename of any binary extension 
module.  _ctypes.__file__, for example:  '.....\\_ctypes.pyd' vs. 
'....\\_ctypes_d.pyd'.

Thomas


From mackstevenson at hotmail.com  Sun May 15 02:05:25 2005
From: mackstevenson at hotmail.com (MackS)
Date: 14 May 2005 23:05:25 -0700
Subject: converting a set into a sorted list
In-Reply-To: <1116120701.520116.315230@f14g2000cwb.googlegroups.com>
References: <1116120701.520116.315230@f14g2000cwb.googlegroups.com>
Message-ID: <1116137125.474289.249210@z14g2000cwz.googlegroups.com>

Thank you for the pointer. I'll upgrade to 2.4.

Best,

Mack



From nnorwitz at gmail.com  Sat May 21 22:23:35 2005
From: nnorwitz at gmail.com (Neal  Norwitz)
Date: 21 May 2005 19:23:35 -0700
Subject: porting help
In-Reply-To: <1116579660.125778.140060@z14g2000cwz.googlegroups.com>
References: <1116579660.125778.140060@z14g2000cwz.googlegroups.com>
Message-ID: <1116728615.438357.117260@o13g2000cwo.googlegroups.com>

You may need to write your own dynload_vxworks.c.  Notice there are
various OS specific dynload_*.c files.  You can try to use
dynload_stub.c to see if you can get it to compile.  You may also need
to muck with Include/pyport.h and configure to get things going.

Good Luck!
n



From tiissa at nonfree.fr  Sun May 29 04:08:17 2005
From: tiissa at nonfree.fr (tiissa)
Date: Sun, 29 May 2005 10:08:17 +0200
Subject: need help of RE
In-Reply-To: <1117353427.242568.47010@g43g2000cwa.googlegroups.com>
References: <1117352350.179209.206930@z14g2000cwz.googlegroups.com>
	<mailman.230.1117353059.18027.python-list@python.org>
	<1117353427.242568.47010@g43g2000cwa.googlegroups.com>
Message-ID: <42997871$0$27689$636a15ce@news.free.fr>

cheng wrote:
> im sorry, my engilsh is not vell well,

That's alright, you could have been french. ;)

> the string not only contain '&' and '|' and it can be anyting
> 
> i just want to split out the "whole word" inside the string

Look at the example for split function of re module in the doc [1].

In short:

 >>> import re
 >>> s="(word1 & (Word2|woRd3))"
 >>> re.split("\W+",s)
['', 'word1', 'Word2', 'woRd3', '']
 >>> [w.lower() for w in re.split("\W+",s) if w != '']
['word1', 'word2', 'word3']
 >>>


[1]http://python.org/doc/lib/node114.html


From jabel at plus.net  Fri May 27 04:07:44 2005
From: jabel at plus.net (John Abel)
Date: Fri, 27 May 2005 09:07:44 +0100
Subject: Running a python program during idle time only
In-Reply-To: <4296D2E3.8060605@hathawaymix.org>
References: <1116637560.499307.28700@o13g2000cwo.googlegroups.com>	<mailman.7.1116821147.18027.python-list@python.org>	<1116869538.611233.264960@g14g2000cwa.googlegroups.com>	<5j64x9gz09.fsf@idiom.com>
	<4296D2E3.8060605@hathawaymix.org>
Message-ID: <4296D550.7090304@plus.net>

Shane Hathaway wrote:

>Mike Meyer wrote:
>  
>
>>On a completely different topic, this looks like the wrong way to solve
>>the problem. You want to update a search engine based on changes to the
>>underlying file system. The right way to do this isn't to just keep
>>rescanning the file system, it's to arrange things so that your scanner
>>gets notified of any changes made to the file system. I did something like 
>>this for my web site search engine, but that's hooked into the SCM that's
>>used for propogating changes to the web site. I know someone is working
>>on patches to the FreeBSD kernel to make this kind of thing work. It would
>>seem that some of the "backup" facilities that worked by keeping a mirror
>>of the disk on separate media would have to have used such hooks, but maybe
>>not.
>>    
>>
>
>I think you're right that filesystem change notification is what Carlos
>needs.
>
>If you're interested in using Linux, Carlos, "inotify" is a new kernel
>module that can notify your program of filesystem changes.  It's not
>folded into the mainline kernel yet, but it's a clean patch.
>
>http://www.edoceo.com/creo/inotify/
>
>I don't know if Windows has anything like it.  I'd be interested to hear
>if it does.
>
>Shane
>  
>
Using the PyWin32 extensions, you can register an event with the kernel, 
and then have the script sleep.  If I can remember how, I'll post some 
code.  It's been a while since I coded specific Win32 stuff.

J


From fphsml at gmail.com  Sat May  7 01:28:59 2005
From: fphsml at gmail.com (James)
Date: 6 May 2005 22:28:59 -0700
Subject: Found python for delphi new web site
In-Reply-To: <mailman.124.1115442205.29826.python-list@python.org>
References: <mailman.124.1115442205.29826.python-list@python.org>
Message-ID: <1115443739.747455.200590@f14g2000cwb.googlegroups.com>

It has been around for a while now. But I am glad I visited it again.
The new PyScripter IDE is great. They should really announce new
software like these here.



From exarkun at divmod.com  Sun May  1 16:25:54 2005
From: exarkun at divmod.com (Jp Calderone)
Date: Sun, 01 May 2005 20:25:54 GMT
Subject: BitKeeper for Python?
In-Reply-To: <IOade.1185051$Xk.343206@pd7tw3no>
Message-ID: <20050501202554.15422.229561071.divmod.quotient.12330@ohm>

On Sun, 01 May 2005 20:16:40 GMT, John Smith <not at home.com> wrote:
>I am going to be working with some people on a project that is going to be
>done over the internet. I am looking for a good method of keeping everyone's
>code up to date and have everyone be able to access all the code including
>all the changes and be able to determine what parts of the code were
>changed.
>
>If it were opensource that would be even better.
>

  Have you checked out this page?

  http://www.google.com/search?hl=en&lr=&q=version+control+system&btnG=Search

  Jp


From prashanthellina at gmail.com  Fri May 27 06:01:05 2005
From: prashanthellina at gmail.com (Prashanth  Ellina)
Date: 27 May 2005 03:01:05 -0700
Subject: Xml writing in Python and verifying using XSD
Message-ID: <1117188065.742367.219360@o13g2000cwo.googlegroups.com>

Hi,

I need to write some data to an xml file. I have an XML Schema defined.
I would like to use some mechanism of writing the data to the xml file
and having exceptions thrown back to me when the data is invalid.

I have looked at xml.dom and xml.dom.minidom but could not figure out
what to do to include xml validation using the xsd while writing.

Any ideas?

Thanks in advance,
Prashanth Ellina



From sjmachin at lexicon.net  Tue May 31 20:37:28 2005
From: sjmachin at lexicon.net (John Machin)
Date: Wed, 01 Jun 2005 10:37:28 +1000
Subject: Swig compile errors
In-Reply-To: <1117583720.968040.230380@g47g2000cwa.googlegroups.com>
References: <1117583720.968040.230380@g47g2000cwa.googlegroups.com>
Message-ID: <429d0347$1@news.eftel.com>

superprad at gmail.com wrote:
> Hi I am trying to write a python wrapper for a C code I have using
> swig. when i try to compile the _wrap.c i get a bunch of these warnings
> and errors can anyone help
> Steps I followed :
> 
> $swig -python test_hk.c
> this generates test_hk.py and test_hk_wrap.c
> then i compile it as
> 
> $gcc -Wall -std=c99 test_hk.c test_hk_wrap.c -I/usr/include/python2.3/

Worth a try:

gcc -Wall -std=c99 -I/usr/include/python2.3/ test_hk.c test_hk_wrap.c




From k04jg02 at kzoo.edu  Sun May 15 15:35:32 2005
From: k04jg02 at kzoo.edu (Joseph Garvin)
Date: Sun, 15 May 2005 19:35:32 +0000
Subject: Safe eval, or how to get list from string
In-Reply-To: <1116007844.564530.178880@g43g2000cwa.googlegroups.com>
References: <1115999726.286709.140690@f14g2000cwb.googlegroups.com>	<mailman.44.1116006195.29328.python-list@python.org>
	<1116007844.564530.178880@g43g2000cwa.googlegroups.com>
Message-ID: <4287A484.80300@kzoo.edu>

bwooster47 at gmail.com wrote:

>>http://twistedmatrix.com/users/moshez/unrepr.py
>>http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/364469
>>    
>>
>
>Thanks, this helps - but I was looking at using no additional modules,
>or using something that came bundled in with python 2.3
>
>I just discovered mx.Tools.NewBuiltins
>
>It has something called "reval" looks that would fit my needs
>perfectly.
>
>Details:
>http://www.faqts.com/knowledge_base/view.phtml/aid/4550/fid/538
>
>  
>
If I remember correctly reval and it's brothers were deemed insecure,
are no longer developed, and are present only for sake of backwards
compatibility. See the global module index entry on it.


From joram.gemma at pandora.be  Sun May 15 09:24:25 2005
From: joram.gemma at pandora.be (joram gemma)
Date: Sun, 15 May 2005 15:24:25 +0200
Subject: string.lstrip stripping too much?
Message-ID: <000401c55951$6a4b25e0$0505a8c0@cheopsturbo>

Hello,

on windows python 2.4.1 I have the following problem

>>> s = 'D:\\music\\D\\Daniel Lanois\\For the beauty of Wynona'
>>> print s
D:\music\D\Daniel Lanois\For the beauty of Wynona
>>> t = 'D:\\music\\D\\'
>>> print t
D:\music\D\
>>> s.lstrip(t)
'aniel Lanois\\For the beauty of Wynona'
>>> 

why does lstrip strip the D of Daniel Lanois also?

thanks in advance
joram




From belred at gmail.com  Mon May  2 22:25:57 2005
From: belred at gmail.com (Bryan)
Date: Mon, 02 May 2005 19:25:57 -0700
Subject: Which IDE is recommended?
In-Reply-To: <1115039282.069052.287920@o13g2000cwo.googlegroups.com>
References: <426f90ac$1_2@rain.i-cable.com>	<9f7v619jhigbtoksslnr88f4idoc6ejvu3@4ax.com>
	<1115039282.069052.287920@o13g2000cwo.googlegroups.com>
Message-ID: <d56n3s$lj2$1@sea.gmane.org>

dcrespo wrote:
>>But I personally recommend DrPython. (Not only, I'm a member of the
>>project).
> 
> 
> I saw this message and downloaded DrPython. It's very good: I like the
> class/functions browser while I'm coding... but I can't find the
> autocompletion feature you talk, and I think this feature is very
> important. Where it is?
> 
> Daniel
> 

i saw this message too and i've been using it for the last couple days, but i 
don't see the class/functions browser you are talking about.  where is it???

thanks,

bryan



From qwweeeit at yahoo.it  Thu May 26 09:31:40 2005
From: qwweeeit at yahoo.it (qwweeeit at yahoo.it)
Date: 26 May 2005 06:31:40 -0700
Subject: File list from listdir or shell?
Message-ID: <1117114300.592398.92440@f14g2000cwb.googlegroups.com>

Hi all,
to obtain a file list from a dir you can use:
import os, sys
try:
.   sExtension=sys.argv[1]
.   sPath=sys.argv[2]
except:
.   sExtension=""
.   sPath='.'
lF=os.listdir(sPath)
# to remove from the list also the names of backup files
lF=filter(lambda lF: '~' not in lF and sExtension in lF,lF)

Running this small script you obtain the file list (based on a given
extension)
from a dir (sPath).
My question is: is there another better way? or can we use the
sys.stdin to capture
the stdout of a shell command?
Examples of single line shell commands could be:
ls -1 *.py (for the filenames only) or
find  ~/ -name '*.py' (to get path+filename of all my root dir)

Unluckily, to capture the stdout I have to redirect it to a file...
I hoped that this could work ...
lF=sys.stdin.readline(os.system("ls -1 *.py"))  
Bye.



From swaroopch at gmail.com  Tue May  3 06:00:52 2005
From: swaroopch at gmail.com (Swaroop C H)
Date: Tue, 3 May 2005 15:30:52 +0530
Subject: python+windows/linux -> write stdout text to always on top text?
In-Reply-To: <1115064842.454916.305970@f14g2000cwb.googlegroups.com>
References: <1115064842.454916.305970@f14g2000cwb.googlegroups.com>
Message-ID: <351e88710505030300495a0169@mail.gmail.com>

On 2 May 2005 13:14:02 -0700, flamesrock <flamesrock at gmail.com> wrote:
> I'm curious if theres a way in python to write stdout text to the
> screen (ie top right) the way they do in some FPS games, so that its
> always on top, in an invisible window of some set dimensions. No matter
> what program is on top.

Why would you want to do that ?

-- 
Swaroop C H
Blog: http://www.swaroopch.info
Book: http://www.byteofpython.info


From jerf at jerf.org  Thu May  5 16:32:38 2005
From: jerf at jerf.org (Jeremy Bowers)
Date: Thu, 05 May 2005 16:32:38 -0400
Subject: How to detect a double's significant digits
References: <1115314620.902071.323410@f14g2000cwb.googlegroups.com>
	<dOtee.706030$w62.64217@bgtnsc05-news.ops.worldnet.att.net>
Message-ID: <pan.2005.05.05.20.32.38.680014@jerf.org>

On Thu, 05 May 2005 18:42:17 +0000, Charles Krug wrote:

> On 5 May 2005 10:37:00 -0700, mrstephengross <mrstephengross at hotmail.com>
> wrote:
>> Hi all... How can I find out the number of significant digits (to the
>> right of the decimal place, that is) in a double? At least, I *think*
>> that's what I'm asking for. For instance:
>> 
>> 0.103 --> 3
>> 0.0103 --> 4
>> 0.00103 --> 5
>> 0.000103 --> 6
>> 0.0000103 --> 7
>> 
>> Thanks in advance!
>> --Steve (mrstephengross at hotmail.com)
>> 
>> 
> I would say that each of these examples has three signficant figures. Each
> of them can be expressed as:
> 
> 1.03e+n
> 
> For any integer n.

You beat me to it.

Step one for mrstephengross is to *rigorously* define what he means by
"significant digits", then go from there. Since I think he mentioned
something about predicting how much space it will take to print out, my
suggestion is to run through whatever printing routines there are and get
a string out, the measure the string, as anything else will likely be
wrong. If that's not possible with the formatting library, you've already
lost; you'll have to completely correctly re-implement the formatting
library, and not only is that a major PITA, you almost never get it
bug-for-bug right...


From skip at pobox.com  Wed May 11 16:18:45 2005
From: skip at pobox.com (Skip Montanaro)
Date: Wed, 11 May 2005 15:18:45 -0500
Subject: Python Documentation (should be better?)
In-Reply-To: <5C99C308457E6D4EA5448EA52A66004A675A6E@or.mxim.com>
References: <5C99C308457E6D4EA5448EA52A66004A675A6E@or.mxim.com>
Message-ID: <17026.26789.592527.975821@montanaro.dyndns.org>


    Jue> Maybe a mailing list or forum people can contribute example and
    Jue> notes?

Contributions can be made at the SourceForge patch tracker:

    http://sourceforge.net/tracker/?group_id=5470&atid=305470

Plain text is fine.

Skip


From python at rcn.com  Tue May 31 10:55:52 2005
From: python at rcn.com (Raymond Hettinger)
Date: 31 May 2005 07:55:52 -0700
Subject: change vars in place w/loop or list comprehension
References: <1117547939.650578.316090@g47g2000cwa.googlegroups.com>
Message-ID: <1117551352.595284.162580@g43g2000cwa.googlegroups.com>

> >>> a = 'one'
> >>> b = 'two'
> >>> c = 'three'
> >>> [a, b, c] = [s.upper() for s in [a, b, c]]
> >>> a
> 'ONE'
>
> Both of these accomplish what I'm after; I prefer the second for its
> brevity. But either approach requires that I spell out my list of
> vars-to-alter [a, b, c] twice.  This strikes me as awkward, and
> would be difficult
> with longer lists.

seq = a, b, c
a, b, c = seq = [s.upper() for s in seq]



From skip at pobox.com  Wed May 11 10:48:21 2005
From: skip at pobox.com (Skip Montanaro)
Date: Wed, 11 May 2005 09:48:21 -0500
Subject: pylab: plot update
In-Reply-To: <d5t4h9$2ai$1@rzsun03.rrz.uni-hamburg.de>
References: <d5t4h9$2ai$1@rzsun03.rrz.uni-hamburg.de>
Message-ID: <17026.6965.301229.370123@montanaro.dyndns.org>


    Jan> After that i call sleep(5) until I can acuire the next tuple.
    Jan> But during that I can't use the zoom/pan, save etc in the window.

    ...

    Jan> Is there any better way to do this easily?

Set a timeout.  How to do that depends on what gui tools you are using.
I've never used pylab so I don't know how it integrates with the rest of
your app.

If you're using PyGTK, something like this should suffice:

    gobject.timeout_add(5000, update_plot)

where the update_plot function executes your acquisition/plot code.  It
needs to return True if you want it to be triggered every five seconds,
otherwise it's a one-shot.

Skip


From jeffelkins at earthlink.net  Wed May 11 14:54:40 2005
From: jeffelkins at earthlink.net (jeff elkins)
Date: Wed, 11 May 2005 18:54:40 +0000
Subject: Finding startup files
In-Reply-To: <d5tvtj$v2q$1@sea.gmane.org>
References: <mailman.375.1115827885.29826.python-list@python.org>
	<200505111807.16833.jeffelkins@earthlink.net>
	<d5tvtj$v2q$1@sea.gmane.org>
Message-ID: <200505111854.41401.jeffelkins@earthlink.net>

On Wednesday 11 May 2005 10:18 pm, Robert Kern wrote:
> jeff elkins wrote:
> > On Wednesday 11 May 2005 04:44 pm, Grant Edwards wrote:
> >>On 2005-05-11, hemagician at gmail.com <hemagician at gmail.com> wrote:
> >>>The following script demonstrates a method that should work for you. I
> >>>believe it is entirely cross-platform.
> >>>
> >>>#! /usr/bin/python
> >>>
> >>>import sys
> >>>import os
> >>>
> >>>print os.path.abspath(os.path.dirname(sys.argv[0]))
> >>
> >>That will probably work most of the time, but...
> >>
> >> 1) you're not gauranteed that argv[0] contains the application
> >>    path/filename.
> >>
> >> 2) the directory containing the executable is not where
> >>    configuration files are supposed to be stored under
> >>    Unix/Linux.
> >
> > Thanks Grant,
> >
> > I live and develop in Linux, but unfortunately, 99.99% of the users of
> > this particular application (analysis of medical laboratory data) will be
> > working with Windows.
> >
> > I'm totally new to Python (obvious,yes?) so how might argv[0] fail?
>
> If I make a symbolic link to the executable script and run it using that
> link, sys.argv[0] will give the filename of that link, not the real file
> it points to.


Thanks. I just tested that and it does indeed fail.

Jeff


From eurleif at ecritters.biz  Sun May 15 15:31:20 2005
From: eurleif at ecritters.biz (Leif K-Brooks)
Date: Sun, 15 May 2005 19:31:20 GMT
Subject: Is isinstance always "considered harmful"?
In-Reply-To: <1116157672.683839.49700@o13g2000cwo.googlegroups.com>
References: <1116157672.683839.49700@o13g2000cwo.googlegroups.com>
Message-ID: <csNhe.5334$Cz3.675850@monger.newsread.com>

Jordan Rastrick wrote:
> Say you're writing, in Python, the extend() method for a Linked List
> version of python's builtin list. Its really important to know what
> kind of iterable youre being passed in - because if its another
> Linked list, and you know it, you can connect the two in 0(1) time;
> whereas any other arbitrary iterable is going to take 0(n), as you're
> just going to have to append the items one by one. Is this a case
> where use of isinstance, to see exactly what kind of Iterable you
> have, can be justified?
>
> def extend(self, elems):
>    if isinstance(elems, LinkedList):
>       # Point last to first
>    else:
>       for elem in elems: self.append(elem)

Regardless of the various issues surrounding isinstance(), you have a
difference in functionality. Since you're just storing a reference in
the case of another LinkedList instead of copying it, mutating the
LinkedList will be different from mutating another iterable type which
has been passed to extend:

>>> linkedlist1 = LinkedList()
>>> list1 = [1, 2, 3]
>>> linkedlist2 = LinkedList([4, 5, 6])
>>> linkedlist1.extend(list1)
>>> linkedlist1.extend(linkedlist2)
>>> linkedlist1
LinkedList([1, 2, 3, 4, 5, 6])
>>> list1.append(4)
>>> linkedlist1 # Notice how there's still only one 4
LinkedList([1, 2, 3, 4, 5, 6])
>>> linkedlist2.append(7)
>>> linkedlist1 # Notice how there's now a 7
LinkedList([1, 2, 3, 4, 5, 6, 7])


From cookedm+news at physics.mcmaster.ca  Sun May  1 17:22:06 2005
From: cookedm+news at physics.mcmaster.ca (David M. Cooke)
Date: Sun, 01 May 2005 17:22:06 -0400
Subject: editor for shelve files
References: <1114942869.144312.253720@o13g2000cwo.googlegroups.com>
Message-ID: <qnk7jiiy741.fsf@arbutus.physics.mcmaster.ca>

"Amir  Michail" <amichail at gmail.com> writes:

> Hi,
>
> Is there a program for editing shelve databases?
>
> Amir

I doubt it. A shelf is basically just a file-based dictionary, where
the keys must be strings, while the values can be arbitrary objects.
An editor could handle the keys, but most likely not the values.

If you have an editor for arbitrary objects, you could probably make
an editor for shelfs easily enough :-)

Do you have a specific use in mind? That would be easier to handle
than the general case.

-- 
|>|\/|<
/--------------------------------------------------------------------------\
|David M. Cooke
|cookedm(at)physics(dot)mcmaster(dot)ca


From dwelch at vcd.hp.com  Mon May  2 16:53:49 2005
From: dwelch at vcd.hp.com (djw)
Date: Mon, 02 May 2005 13:53:49 -0700
Subject: Comparision of GUI framworks
In-Reply-To: <d554en$rm7$02$1@news.t-online.com>
References: <d554en$rm7$02$1@news.t-online.com>
Message-ID: <d5647o$hje$1@news.vcd.hp.com>

Florian Lindner wrote:
> Hello,
> I've read the chapter in the Python documentation, but I'm interested in a a
> more in-depth comparision. Especially regarding how pythonic it is and how
> well it performs and looks under Windows.
> I've some C++ experiences with Qt, so I'm very interested to have PyQt
> compared to wxWindows and Tk. How fast does PyQt catches up with the
> versiones released from Trolltech? etc..
> 
> Thx,
> Florian
I would ask this question on the pyqt/pykde mailing list... but, for 
what's its worth, I've been using PyQt (on Linux) for > 4 years, and am 
very happy with it. I find it very "Pythonic". When I first started 
looking at UI toolkits, the decision came down to wx vs. Qt. I found wx 
a bit more complex and cryptic and less OO than Qt. Also, I find Qt 
Designer + Eric to be a nicer development environment than Boa 
Constructor. The main problem with Qt is apparently licensing issues on 
Windows... I can't comment since I only use PyQt/Qt on Linux.

-Don


From mrmaple at gmail.com  Wed May 25 15:17:13 2005
From: mrmaple at gmail.com (James Carroll)
Date: Wed, 25 May 2005 15:17:13 -0400
Subject: Where do I find the dispatch name?
In-Reply-To: <b273c74105052510205e0f09f5@mail.gmail.com>
References: <b273c74105052510205e0f09f5@mail.gmail.com>
Message-ID: <b273c74105052512174b920cfa@mail.gmail.com>

<Answering self>

I looked through all the IIDs in:  PythonWin, Tools, COM Object
Browser, RegisteredCategories, Automation Objects.

After looking through all the IIDs I saw one that looked like it might
work... and it did.

-Jim





On 5/25/05, James Carroll <mrmaple at gmail.com> wrote:
> I just ran makepy to create a wrapper for my com object, and it
> generated the wrapper with the CLSID.py under
> site-packages/win32com/gen_py/
> 
> Now, I'm trying to figure out how to invoke it.  How do I figure out
> what string to give Dispatch?
> 
> For instance:
> xl = win32com.client.Dispatch("Excel.Application")
> 
> If I understand right would give me an instance of the wrapper....
> Do I give it the entire classID?
> 
> -Jim
>


From bogus@does.not.exist.com  Thu May 19 09:45:02 2005
From: bogus@does.not.exist.com ()
Date: Thu, 19 May 2005 13:45:02 -0000
Subject: No subject
Message-ID: <mailman.20.1572215593.3356.python-list@python.org>

#! rnews 2056
Newsgroups: comp.lang.python
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From: Harry George <harry.g.george at boeing.com>
Subject: Re: ElementTree and xsi to xmlns conversion?
X-Nntp-Posting-Host: cola2.ca.boeing.com
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References: <d6gbo5$fm6$1 at vegh.ks.cc.utah.edu> <mailman.193.1116487191.8733.python-list at python.org>
Mime-Version: 1.0
Date: Thu, 19 May 2005 13:24:58 GMT
Xref: news.xs4all.nl comp.lang.python:378110

"Fredrik Lundh" <fredrik at pythonware.com> writes:

[snip]
> 
> are you sure?  the prefix shouldn't matter; it's the namespace URI that's important.
> if you're writing code that depends on the namespace prefix rather than the name-
> space URI, you're not using namespaces correctly.  when it comes to namespaces,
> elementtree forces you to do things the right way:
> 
>     http://www.jclark.com/xml/xmlns.htm
> 
> (unfortunately, the XML schema authors didn't understand namespaces so they
> messed things up:
>     http://www.w3.org/2001/tag/doc/qnameids-2002-04-30
> to work around this, see oren's message about how to control the namespace/prefix
> mapping.  in worst case, you can manually insert xsi:-attributes in the tree, and rely on
> the fact that the default writer only modifies universal names)
> 
> </F> 
> 
> 
> 

First, thanks for ElementTree and cElementTree.  Second, I've read the
docs and see a lot of examples for building trees, but not a lot for
traversing parsed trees.  Questions:

1. Is there a good idiom for namespaces?  I'm currently doing things like:

UML='{href://org.omg/UML/1.3}'
....
packages=ns2.findall(UML+'Package')

2. Is there a similar idiom which works for Paths?   I've tried:

packages=pkg1.findall(UML+'Namespace.ownedElement/'+UML+'Package')

but haven't found the right combination, so I do step-at-a-time descent.

-- 
harry.g.george at boeing.com
6-6M21 BCA CompArch Design Engineering
Phone: (425) 294-4718


From tjreedy at udel.edu  Mon May 30 14:24:54 2005
From: tjreedy at udel.edu (Terry Reedy)
Date: Mon, 30 May 2005 14:24:54 -0400
Subject: Case Sensitive, Multiline Comments
References: <1117137316.140791.210430@g14g2000cwa.googlegroups.com>
	<z5adnQMsOLiL7AffRVn-hQ@comcast.com>
Message-ID: <d7flkm$n6o$1@sea.gmane.org>


"D H" <a at b.c> wrote in message news:z5adnQMsOLiL7AffRVn-hQ at comcast.com...
> Elliot Temple wrote:
>> Hi I have two questions.  Could someone explain to me why Python is
>> case sensitive?  I find that annoying.
>
> I do too.

I don't.

>  As you've found, the only reason is because it is,

False.  As someone else already pointed out in this thread, and as some 
said years ago when Guido brought up the subject, standard math notation 
*is* case sensitive and some people like Python because they can directly 
translate math expressions into Python expressions.

I am annoyed by the disinformation and slander ('anti-newbie') repeated 
indefinitely by some case-folding advocates.  Difference annoyances for 
different folks, I guess.

Terry J. Reedy







From philippe at philippecmartin.com  Tue May  3 21:46:04 2005
From: philippe at philippecmartin.com (Philippe C. Martin)
Date: Wed, 04 May 2005 01:46:04 GMT
Subject: OOP
References: <1114709684.096071.109960@l41g2000cwc.googlegroups.com>
Message-ID: <wPVde.2052$Vz4.1122@newssvr11.news.prodigy.com>

Try this:
http://pigseye.kennesaw.edu/~dbraun/csis4650/A&D/UML_tutorial/


demon_slayer2839 at yahoo.com wrote:

> Hey yall,
> I'm new to Python and I love it. Now I can get most of the topics
> covered with the Python tutorials I've read but the one thats just
> stumping me is Object Orientation. I can't get the grasp of it. Does
> anyone know of a good resource that could possibly put things in focus
> for me? Thanks.



From grante at visi.com  Tue May 17 11:40:04 2005
From: grante at visi.com (Grant Edwards)
Date: Tue, 17 May 2005 15:40:04 -0000
Subject: Python forum
References: <mailman.84.1116320178.8733.python-list@python.org>
Message-ID: <118k42k64ai7316@corp.supernews.com>

On 2005-05-17, Jonas Melian <jonasmg at softhome.net> wrote:

> I'm going to say a suggestion, why don't you create a forum
> like the one of Ruby (http://www.rubyforums.com/)? for the
> novices this is a great help, better than a mail list

Says you.  I prever a newsgroup.  Mailing lists are in second
place and web forums a very distant third.  I really don't see
how pointing Mozilla or Thunderbird at a newsgroup isn't any
harder than pointing it at a web forum.

> I know that you have python-list, it's both an email and a usenet list.

And both are far better than web forums.

> But I think that a forum is great for the learning. The test
> is in gentoo's forums. They are a lot of experienced people
> answering questions without any problem and it goes very well

Except for the torture of using a web forum's UI.

[In case you can't tell, I hate web forums.  I've never seen a
single one with a suable UI.]

-- 
Grant Edwards                   grante             Yow!  .. My vaseline is
                                  at               RUNNING...
                               visi.com            


From ken at perfect-image.com  Tue May 17 10:54:27 2005
From: ken at perfect-image.com (Ken Godee)
Date: Tue, 17 May 2005 07:54:27 -0700
Subject: Python RPM and CentOS
In-Reply-To: <d6aqur$hhh$1@solaris.cc.vt.edu>
References: <d6aqur$hhh$1@solaris.cc.vt.edu>
Message-ID: <428A05A3.9060409@perfect-image.com>

The reasonable thing would be to use "yum".


> Not really a Python question, but I thought some on this list may be 
> able to answer.... so here goes:
> 
> I have several machines on which I must install CentOS. There are many 
> updates to CentOS and it's very time consuming to do the updates over 
> the network. I have a local copy of all of the updated rpms. Would it be 
> reasonable to do something like this to upgrade them locally and more 
> quickly than over the network???
> 
> updated_rpms = [list of updated rpms]
> 
> for f in updated_rpms:
> 
>      try:
>          os.popen("/bin/rpm --nodeps -U %s" %f)
> 
>      except Exception, e:
>          print e
> 
> 
> Thanks,
> 
> rbt



From could.net at gmail.com  Wed May  4 21:30:21 2005
From: could.net at gmail.com (could ildg)
Date: Thu, 5 May 2005 09:30:21 +0800
Subject: How to write this regular expression?
In-Reply-To: <pan.2005.05.04.18.44.37.48366@jerf.org>
References: <mailman.139.1115189526.6583.python-list@python.org>
	<maednQfrx_iwL-XfRVn-hA@powergate.ca>
	<mailman.159.1115209494.6583.python-list@python.org>
	<pan.2005.05.04.18.44.37.48366@jerf.org>
Message-ID: <311b5ce1050504183047bc4d73@mail.gmail.com>

On 5/5/05, Jeremy Bowers <jerf at jerf.org> wrote:
> On Wed, 04 May 2005 20:24:51 +0800, could ildg wrote:
> 
> > Thank you.
> >
> > I just learned how to use re, so I want to find a way to settle it by
> > using re. I know that split it into pieces will do it quickly.
> 
> I'll say this; you have two problems, splitting out the numbers and
> verifying their conformance to some validity rule.
> 
> I strongly recommend treating those two problems separately. While I'm not
> willing to guarantee that an RE can't be written for something like ("[A
> number A]_[A number B]" such that A < B) in the general case, it won't be
> anywhere near as clean or as easy to follow if you just write an RE to
> extract the numbers, then verify the constraints in conventional Python.
> 
> In that case, if you know in advance that the numbers are guaranteed to be
> in that format, I'd just use the regular expression "\d+", and the
> "findall" method of the compile expression:
> 
> Python 2.3.5 (#1, Mar  3 2005, 17:32:12)
> [GCC 3.4.3  (Gentoo Linux 3.4.3, ssp-3.4.3-0, pie-8.7.6.6)] on linux2
> Type "help", "copyright", "credits" or "license" for more information.
> >>> import re
> >>> m = re.compile("\d+")
> >>> m.findall("344mmm555m1111")
> ['344', '555', '1111']
> >>>
> 
> If you're checking general matching of the parameters you've given, I'd
> feel no shame in checking the string against r"^(_\d+){1,3}$" with .match
> and then using the above to get the numbers, if you prefer that. (Note
> that I believe .match implies the initial ^, but I tend to write it
> anyways as a good habit. Explicit better than implicit and all that.)
> 
> (I just tried to capture the three numbers by adding a parentheses set
> around the \d+ but it only gives me the first. I've never tried that
> before; is there a way to get it to give me all of them? I don't think so,
> so two REs may be required after all.)
You can capture each number by using group, each group can have a name.

> --
> http://mail.python.org/mailman/listinfo/python-list
>


From majordomo-owner at mutt.org  Thu May 26 13:27:12 2005
From: majordomo-owner at mutt.org (majordomo-owner at mutt.org)
Date: Thu, 26 May 2005 18:27:12 +0100
Subject: Majordomo results: {Filename?} HELLO
Message-ID: <20050526172719.C6E6D1E4002@bag.python.org>

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From dagurp at gmail.com  Tue May  3 11:33:15 2005
From: dagurp at gmail.com (dagurp at gmail.com)
Date: 3 May 2005 08:33:15 -0700
Subject: Locale and cookies
In-Reply-To: <slrnd7c9g1.h8e.klaus@main.szn.dk>
References: <1115037383.913329.143470@l41g2000cwc.googlegroups.com>
	<slrnd7c9g1.h8e.klaus@main.szn.dk>
Message-ID: <1115134395.452558.123460@f14g2000cwb.googlegroups.com>

Setting it to "C" worked fine. Thanks!



From Moiz.Golawala at ge.com  Wed May 25 13:31:49 2005
From: Moiz.Golawala at ge.com (Golawala, Moiz M (GE Infrastructure))
Date: Wed, 25 May 2005 13:31:49 -0400
Subject: Pyro2.3 problem
Message-ID: <CE90A4CF2E5E9C4890AE5D9D8A5EFAE301460F2F@CINMLVEM10.e2k.ad.ge.com>

Hi All, 

I am seeing some interesting behavior with Pyro 2.3. I created a server using Pyro2.2 and a client on a different machine with Python2.2 and communication was just fine (I am not using a Name server).
However when I upgraded the client to Pyro2.3 (the server was sill on Pyro2.2) and try and communicate with the server, I get a bunch of exception telling me that there is a problem with the URI etc..

My server code is simple:
 
import MyClass
from Pyro.ext import remote_nons

remote_nons.provide_server_object(MyClass.MyClass(), 'myhost', 'myhost', 9199)
sys.exit(remote_nons.handle_request())


My client code is:

from Pyro.ext import remote_nons
s = remote_nons.get_server_object('Myhost','Myhost',9199)
s.helloWorld()

Please can someone tell me why the above code would work when both client and server are running Pyro2.2 but not when server is on Pyro2.2 and client is on Pyro2.3

Any help is greatly appreciated.

Thanks,
Moiz Golawala
GE Infrastructure, Security
Software Engineer
Enterprise Solutions

T 561 912 5972
F 561 994 6572
E moiz.golawala at ge.com 
www.gesecurity.com

791 Park of Commerce Blvd., Suite 100
Boca Raton, FL, 33487, U.S.A.
GE Security, Inc.



From simba at simba.eclipse.co.uk  Wed May 18 17:35:49 2005
From: simba at simba.eclipse.co.uk (millerch)
Date: Wed, 18 May 2005 22:35:49 +0100
Subject: socket programming and port scans
In-Reply-To: <d6gbsu$no1$1@solaris.cc.vt.edu>
References: <d6gbsu$no1$1@solaris.cc.vt.edu>
Message-ID: <hcidnSn9xJ_gKRbfRVnyjQ@eclipse.net.uk>

Are you explicitly referencing the port for nmap, or is it a general 
port scan?

The version of nmap I run only checks common ports unless a port range 
is specified.

rbt wrote:
> I don't fully understand sockets, I just know enough to be dangerous. 
> The below is not detected by nmap, but is affected by iptables or ipsec. 
> Can anyone explain why that is?
> 
>     s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
>     s.bind((ip_param, port_param))
>     while 1:
>         s.listen(5)
> 
> I can connect to the socket server and even transmit data so I know it's 
> there.
> 
> Thanks,
> rbt


From sjmachin at lexicon.net  Mon May 16 21:07:13 2005
From: sjmachin at lexicon.net (John Machin)
Date: Tue, 17 May 2005 11:07:13 +1000
Subject: Parsing text into dates?
References: <1116277171.492587.38080@g47g2000cwa.googlegroups.com>
	<1116291091.292107.196730@g49g2000cwa.googlegroups.com>
Message-ID: <hmgi81tq8dnl6gci3aqhfaqke591as8c31@4ax.com>

On 16 May 2005 17:51:31 -0700, "George Sakkis" <gsakkis at rutgers.edu>
wrote:


>#=======================================================
>
>def parseDateTime(string, USA=False, implyCurrentDate=False,
>                  yearHeuristic=_20thcenturyHeuristic):
>    '''Tries to parse a string as a valid date and/or time.
>
>    It recognizes most common (and less common) date and time formats.

Impressive!


>
>    Examples:
[snip]
>        >>> str(parseDateTime('15.6.2001'))
>        '2001-06-15'
>        >>> str(parseDateTime('6.15.2001'))
>        '2001-06-15'

A dangerous heuristic -- 6.12.2001 (meaning 2001-12-06) can be easily
typoed into 6.13.2001 or 6.15.2001 on the numeric keypad.




From steven.bethard at gmail.com  Sun May 29 21:19:40 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Sun, 29 May 2005 19:19:40 -0600
Subject: finding indices in a sequence of parentheses
In-Reply-To: <429a382d$0$15392$626a14ce@news.free.fr>
References: <u_KdneJ4tt9QuwffRVn-tg@comcast.com>
	<429a382d$0$15392$626a14ce@news.free.fr>
Message-ID: <vsGdnZETQ9-09wffRVn-tg@comcast.com>

tiissa wrote:
> I'd personnally extract the parenthesis then zip the lists of indices.
> In short:
> 
>  >>> def indices(mylist):
>  ...     lopen=reduce(list.__add__, [[i]*s.count('(') for i,s in 
> enumerate(mylist)],[])
>  ...     lclose=reduce(list.__add__, [[i]*s.count(')') for i,s in 
> enumerate(mylist)],[])
>  ...     return zip(lopen,lclose)
>  ...
>  >>> indices(lst)
>  [(2, 2), (4, 7), (6, 7), (8, 9), (8, 10)]
>  >>>

Thanks, that's a good idea.  In case anyone else is reading this thread, 
and had to mentally unwrap the reduce expressions, I believe they could 
be written as:

lopen  = [x for i, s in enumerate(lst) for x in [i]*s.count('(')]
lclose = [x for i, s in enumerate(lst) for x in [i]*s.count(')')]

or maybe:

lopen  = [i for i, s in enumerate(lst) for _ in xrange(s.count('('))]
lclose = [i for i, s in enumerate(lst) for _ in xrange(s.count(')'))]

Sorry, I have an irrational fear of reduce. ;)

STeVe


From grante at visi.com  Wed May 11 10:21:07 2005
From: grante at visi.com (Grant Edwards)
Date: Wed, 11 May 2005 14:21:07 -0000
Subject: Python Args By Reference
References: <1115769308.136143.74080@f14g2000cwb.googlegroups.com>
	<1182j1daaepv6f4@corp.supernews.com>
	<1115787330.723188.295610@f14g2000cwb.googlegroups.com>
	<roy-385EA3.06423911052005@reader1.panix.com>
Message-ID: <118456jg0jgnqee@corp.supernews.com>

On 2005-05-11, Roy Smith <roy at panix.com> wrote:

> The most common immutable objects you'll see are strings and tuples,

And integers.  They're immutable, aren't they?  At least the
small ones.  And floats.

-- 
Grant Edwards                   grante             Yow!  .. bleakness....
                                  at               desolation.... plastic
                               visi.com            forks...


From bill.mill at gmail.com  Fri May  6 12:04:28 2005
From: bill.mill at gmail.com (Bill Mill)
Date: Fri, 6 May 2005 12:04:28 -0400
Subject: Getting number of iteration
In-Reply-To: <d5g42o$jc5$00$1@news.t-online.com>
References: <d5g42o$jc5$00$1@news.t-online.com>
Message-ID: <797fe3d405050609045bd2457b@mail.gmail.com>

On 5/6/05, Florian Lindner <Florian.Lindner at xgm.de> wrote:
> Hello,
> when I'm iterating through a list with:
> 
> for x in list:
> 
> how can I get the number of the current iteration?

Python 2.4 and greater:

for n, x in enumerate(lst):
    print "iteration %d on element %s" % (n, x)

Earlier:

n = 0
for x in lst:
    print "iteration %d on element %s" % (n, x)
    n += 1

And you shouldn't use list as a variable name; list() is a built-in
function which you'll clobber if you do.

Peace
Bill Mill
bill.mill at gmail.com


From onurb at xiludom.gro  Wed May  4 04:24:23 2005
From: onurb at xiludom.gro (bruno modulix)
Date: Wed, 04 May 2005 10:24:23 +0200
Subject: Creating Files
In-Reply-To: <esug71lo1nd3773rk71l7rtus35tm4mfcu@4ax.com>
References: <esug71lo1nd3773rk71l7rtus35tm4mfcu@4ax.com>
Message-ID: <427886b9$0$285$626a14ce@news.free.fr>

Dan wrote:
> 
> I know how to open a system file with Python, but is there some way to
> create one if it's not there?

As in any other language I know : just open it in write mode !-)

-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for 
p in 'onurb at xiludom.gro'.split('@')])"


From phillip.watts at anvilcom.com  Thu May 19 11:05:29 2005
From: phillip.watts at anvilcom.com (phil)
Date: Thu, 19 May 2005 10:05:29 -0500
Subject: Tkinter special math chars
Message-ID: <428CAB39.1070109@anvilcom.com>

Using Tkinter to teach high school geometry.
Sorta committed to Tkinter at least for now.
Would like to use some special chars like
limits, infinity, square root, cube root
and a buch more.
in Text Box and Cancas

Is there some package I can integrate with
Tkinter to do this.

Even better would a 'supplemental' font file.
In other words I create my own fonts without
disturbing the regular fonts and I have to write the
code which tells it when to use the special fonts.
I haven't a clue how to do something like that.
I know Tkinter will let you change fonts but
I would have to control it on a char basis
somthing like:
'As the function approaches {INFINITY}'
scan and somehow replace.

TIA.



From kay.schluehr at gmx.net  Fri May 20 01:56:06 2005
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: 19 May 2005 22:56:06 -0700
Subject: Is Python suitable for a huge, enterprise size app?
In-Reply-To: <mailman.210.1116513794.8733.python-list@python.org>
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>
	<1116432325.497438.64580@g49g2000cwa.googlegroups.com>
	<1116433218.495131.71260@g49g2000cwa.googlegroups.com>
	<1116443474.565264.176640@g44g2000cwa.googlegroups.com>
	<7xd5rn93zi.fsf@ruckus.brouhaha.com>
	<mailman.210.1116513794.8733.python-list@python.org>
Message-ID: <1116568566.776426.6390@g43g2000cwa.googlegroups.com>


Dave Brueck wrote:

> Overall it's been such a positive experience for us that nobody in
the company -
> from grunt testers up to the CTO - has any reservations about using
Python in
> production anymore (even though initially they all did). All of the
developers
> have previous experience with using Java in production systems, and
none
> seriously consider it for new projects at all.
>
> -Dave

Think there is still a lack of communicating success on that scale. If
I think about serious IT magazines published in Germany ( e.g. "Object
Spectrum" ), there are tons of experience reports about all kinds of
enterprise systems, that were created and managed in Java/dotNET.

There might be a slight progress if you review some of the talks on the
next Europython conference:

http://www.python-in-business.org/ep2005/alisttrack.chtml?track=692

But this is still internal from the fans of the language to other fans.

Ciao,
Kay



From henkjan at xs4all.nl  Sat May  7 03:39:41 2005
From: henkjan at xs4all.nl (Henk-Jan de Jong)
Date: Sat, 07 May 2005 09:39:41 +0200
Subject: Encryption with Python?
In-Reply-To: <1115324411.952821.150780@o13g2000cwo.googlegroups.com>
References: <1115324411.952821.150780@o13g2000cwo.googlegroups.com>
Message-ID: <427c707c$0$165$e4fe514c@news.xs4all.nl>

Blake T. Garretson wrote:
> I want to save some sensitive data (passwords, PIN numbers, etc.) to
> disk in a secure manner in one of my programs.  What is the
> easiest/best way to accomplish strong file encryption in Python?  Any
> modern block cipher will do: AES, Blowfish, etc.  I'm not looking for
> public key stuff; I just want to provide a pass-phrase.
> 
> I found a few modules out there, but they seem to be all but abandoned.
>  Most seem to have died several years ago.  The most promising package
> is A.M. Kuchling's Python Cryptography Toolkit
> (http://www.amk.ca/python/code/crypto.html).
> 
> Is this the defacto Python encryption solution?  What does everyone
> else use?  Any other suggestions?  The SSLCrypto package
> (http://www.freenet.org.nz/python/SSLCrypto/) may be a good alternative
> too, but I am not sure if it is actively maintained.
> 
> Thanks,
> Blake
> 

There's a DES implementation at

http://home.pacific.net.au/~twhitema/des.html


From dieter at handshake.de  Sat May 21 14:36:05 2005
From: dieter at handshake.de (Dieter Maurer)
Date: 21 May 2005 20:36:05 +0200
Subject: python24.zip
References: <mailman.249.1116595092.8733.python-list@python.org>
	<428e0cc3$0$29954$9b622d9e@news.freenet.de>
Message-ID: <x7hdgw2zqi.fsf@handshake.de>

"Martin v. L?wis" <martin at v.loewis.de> writes on Fri, 20 May 2005 18:13:56 +0200:
> Robin Becker wrote:
> > Firstly should python start up with non-existent entries on the path?
> 
> Yes, this is by design.
> 
> > Secondly is this entry be the default for some other kind of python
> > installation?
> 
> Yes. People can package everything they want in python24.zip (including
> site.py). This can only work if python24.zip is already on the path
> (and I believe it will always be sought in the directory where
> python24.dll lives).

The question was:

   "should python start up with **non-existent** objects on the path".

I think there is no reason why path needs to contain an object
which does not exist (at the time the interpreter starts).

In your use case, "python24.zip" does exist and therefore may
be on the path. When "python24.zip" does not exist, it does
not contain anything and especially not "site.py".


I recently analysed excessive import times and
saw thousands of costly and unneccesary filesystem operations due to:

  *  long "sys.path", especially containing non-existing objects

     Although non-existent, about 5 filesystem operations are
     tried on them for any module not yet located.

  *  a severe weakness in Python's import hook treatment

     When there is an importer "i" for a path "p" and
     this importer cannot find module "m", then "p" is
     treated as a directory and 5 file system operations
     are tried to locate "p/m". Of course, all of them fail
     when "p" happens to be a zip archive.


Dieter


From qwweeeit at yahoo.it  Wed May 11 09:05:47 2005
From: qwweeeit at yahoo.it (qwweeeit at yahoo.it)
Date: 11 May 2005 06:05:47 -0700
Subject: Importing modules
Message-ID: <1115816747.292060.292200@o13g2000cwo.googlegroups.com>

The pythonic way of programming requires, as far as I know, to spread a
big application in plenty of more manageable scripts, using import or
from ... import to connect the various modules.
In some cases there is a further complication: module importing through
an indirect mechanism, like: exec "from " + xxx + " import *".

A part the fact that I have not understood the "real" difference
between import and from ... import (or also from... import *), is it
possible to re-build the application in only one chunck?
This is only to better understand the application's structure, in order
to implement a flow chart tool.

I have already developed a cross reference tool and I applied it to
PySol (solitary card games). PySol is made up of almost 100 modules for
a total of almost 30000 lines.
To understand a program, however, you need also a flow chart...



From http  Mon May 23 13:29:58 2005
From: http (Paul Rubin)
Date: 23 May 2005 10:29:58 -0700
Subject: execution error
References: <3fehq6F7flfgU1@individual.net>
Message-ID: <7x8y257svd.fsf@ruckus.brouhaha.com>

"Ximo" <elrei69 at yahoo.es> writes:
> And my question is how can show the execution error whitout exit of the 
> program, showing it in the error output as...
> >>6/0
> >>"Error: Division per 0"

Trap the ArithmeticError exception and go by the name of the exception
class.  See the language ref manual about how exceptions work.


From anton.vredegoor at gmail.com  Tue May 17 08:03:04 2005
From: anton.vredegoor at gmail.com (Anton Vredegoor)
Date: 17 May 2005 05:03:04 -0700
Subject: Python on a public library computer
In-Reply-To: <mailman.68.1116286371.8733.python-list@python.org>
References: <1116069664.779281.320540@g47g2000cwa.googlegroups.com>
	<87r7g6rbz0.fsf@pobox.com> <42892C88.6090609@open-networks.net>
	<mailman.68.1116286371.8733.python-list@python.org>
Message-ID: <1116331384.934151.306320@z14g2000cwz.googlegroups.com>

Chris Lambacher topposted:

> usb key and moveable python.
> http://www.voidspace.org.uk/python/movpy/

I have a usb card reader and I can use it. That saves me from having to
have remote storage at least. However I can only save files, not open
them, except if I use word, excel or powerpoint.

The moveable python is great indeed. This worked here before, but then
I could even access *other* peoples usb sticks in this whole building
... Crazy. Not anymore though. They could really use someone like me
here for a sensible security policy that doesn't cripple the users. I
can't even set internet options, that means I can't remove my history
or clear my cache :-(

Anton

'security doesn't mean shooting everyone in the foot'



From robin at reportlab.com  Sat May 21 15:16:17 2005
From: robin at reportlab.com (Robin Becker)
Date: Sat, 21 May 2005 19:16:17 +0000
Subject: python24.zip
In-Reply-To: <x7hdgw2zqi.fsf@handshake.de>
References: <mailman.249.1116595092.8733.python-list@python.org>
	<428e0cc3$0$29954$9b622d9e@news.freenet.de>
	<x7hdgw2zqi.fsf@handshake.de>
Message-ID: <428F8901.5000300@jessikat.fsnet.co.uk>

Dieter Maurer wrote:
.....
> 
> The question was:
> 
>    "should python start up with **non-existent** objects on the path".
> 
> I think there is no reason why path needs to contain an object
> which does not exist (at the time the interpreter starts).
> 
> In your use case, "python24.zip" does exist and therefore may
> be on the path. When "python24.zip" does not exist, it does
> not contain anything and especially not "site.py".
> 

I think this was my intention, but also I think I have some concern over
having two possible locations for the standard library. It seems non pythonic
and liable to cause confusion if some package should manage to install
python24.zip while I believe that python24\lib is being used.

> 
> I recently analysed excessive import times and
> saw thousands of costly and unneccesary filesystem operations due to:
> 
>   *  long "sys.path", especially containing non-existing objects
> 
>      Although non-existent, about 5 filesystem operations are
>      tried on them for any module not yet located.
> 
>   *  a severe weakness in Python's import hook treatment
> 
>      When there is an importer "i" for a path "p" and
>      this importer cannot find module "m", then "p" is
>      treated as a directory and 5 file system operations
>      are tried to locate "p/m". Of course, all of them fail
>      when "p" happens to be a zip archive.
> 
> 
> Dieter

I suppose that's a reason for eliminating duplicates and non-existent entries.

-- 
Robin Becker


From jhofmann at ucsc.edu  Sat May 28 22:11:49 2005
From: jhofmann at ucsc.edu (James Hofmann)
Date: Sun, 29 May 2005 02:11:49 +0000 (UTC)
Subject: Strings for a newbie
References: <d7726f$fdg$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
Message-ID: <loom.20050529T035834-443@post.gmane.org>

Malcolm Wooden <mwooden <at> dtptypes.com> writes:

> 
> I'm trying to get my head around Python but seem to be failing miserably. I 
> use RealBasic on a Mac and find it an absolute dream! But Python....UGH!
> 
> I want to put a sentence of words into an array, eg "This is a sentence of 
> words"
> 
> In RB it would be simple:
> 
> Dim s as string
> Dim a(-1) as string
> Dim i as integer
> 
> s = "This is a sentence of words"
> For i = 1 to CountFields(s," ")
>   a.append NthField(s," ",i)
> next
> 
> That's it an array a() containing the words of the sentence.
> 
> Now can I see how this is done in Python? - nope!
> 
> UGH!
> 
> Malcolm
> (a disillusioned Python newbie) 
> 

This is the "verbose" version.

s = "This is a sentence of words"
nextword = ""
words = []
for character in s:
    if character==" ":
        words.append(nextword)
        nextword = ""
    else:
        nextword+=character # string types use += instead of append
words.append(nextword) # include the last word
print words

The main sticking point for you was probably understanding the way Python lets
you loop through sequence types. In general, sequences(list, string, etc.) can
be iterated either by an explicit function call, item = sequence.next(), or more
commonly with "for item in sequence:" which will make Python go through every
item it sees inside the sequence.

This turns out to be more convenient than keeping a seperate counter in the vast
majority of cases, because it cuts straight to the business of manipulating each
item, rather than tracking where it is.

Now a "slim" version:

s = "This is a sentence of words"
print s.split()
 
But there's no learning from that one, it's just an easy library call.



From simon.brunning at gmail.com  Mon May  9 10:14:49 2005
From: simon.brunning at gmail.com (Simon Brunning)
Date: Mon, 9 May 2005 15:14:49 +0100
Subject: Trouble saving unicode text to file
In-Reply-To: <427f6c37$0$283$edfadb0f@dread12.news.tele.dk>
References: <1115500976.571232.76100@z14g2000cwz.googlegroups.com>
	<427DDAA5.9020606@v.loewis.de>
	<t4qr71h88us709h4es4oa4fbamnkgkj0sj@4ax.com>
	<427E5136.4000300@v.loewis.de>
	<gq0t7194aiuock5t67gqvudokla2lr7hbp@4ax.com>
	<mailman.207.1115645364.29826.python-list@python.org>
	<427f6c37$0$283$edfadb0f@dread12.news.tele.dk>
Message-ID: <8c7f10c6050509071430925755@mail.gmail.com>

On 5/9/05, Max M <maxm at mxm.dk> wrote:
> Fredrik Lundh wrote:
> 
> > (I just noticed that there's no euro sign on my swedish keyboard.  I've
> > never missed it ;-)
> 
> It's probably "AltGR + E" like here in DK

My UK keyboard has it as AltGr + 4, FWIW.

-- 
Cheers,
Simon B,
simon at brunningonline.net,
http://www.brunningonline.net/simon/blog/


From jonasmg at softhome.net  Wed May 18 06:27:20 2005
From: jonasmg at softhome.net (Jonas Melian)
Date: Wed, 18 May 2005 11:27:20 +0100
Subject: Python forum
In-Reply-To: <1116362069.228928.72720@z14g2000cwz.googlegroups.com>
References: <mailman.84.1116320178.8733.python-list@python.org>
	<1116362069.228928.72720@z14g2000cwz.googlegroups.com>
Message-ID: <428B1888.3050506@softhome.net>

madsurfer2000 at hotmail.com wrote:
> 
> What's wrong with this web forum ;-)
> 
> http://groups-beta.google.com/group/comp.lang.python?hl=en
> 
> c.l.python is a mailing list, usenet group and a web forum. How you
> access it is up to you. There are also other nntp-to-web sites out
> there, and you can even make your own if you don't like them.
> 

I personally try of not using google. One has become too powerful.


From rune.strand at gmail.com  Thu May  5 06:29:23 2005
From: rune.strand at gmail.com (runes)
Date: 5 May 2005 03:29:23 -0700
Subject: using variables with modules
In-Reply-To: <1115285809.074451.171110@z14g2000cwz.googlegroups.com>
References: <1115285809.074451.171110@z14g2000cwz.googlegroups.com>
Message-ID: <1115288963.571659.22820@o13g2000cwo.googlegroups.com>

The only problem I can see, is trailing whitespace from the ip.txt
file. Perhaps
ClientIP.strip() will help?



From peter at engcorp.com  Mon May 16 12:48:58 2005
From: peter at engcorp.com (Peter Hansen)
Date: Mon, 16 May 2005 12:48:58 -0400
Subject: command string good in subprocess.Popen(string) fails in
	process.Process(string)
In-Reply-To: <mailman.47.1116251579.8733.python-list@python.org>
References: <mailman.43.1116249416.8733.python-list@python.org>	<9YSdnavxIbdvAhXfRVn-1w@powergate.ca>
	<mailman.47.1116251579.8733.python-list@python.org>
Message-ID: <7pmdnS5f65ySUhXfRVn-2A@powergate.ca>

Earl Eiland wrote:
> from Trent Mick trentm at ActiveState.com:
> "You might be able to use or borrow code from my process.py module.

Few here have ever heard of it, I suspect.  Maybe you should ask Trent 
for help?
> 
>>Earl Eiland wrote:
>>
>>>The command string consists of "filename.exe  instruction1 instruction2
>>>..."  It works in subprocess, but in process, returns the error "can't
>>>find the file instruction1".
>>>
>>>How do I pass command line instructions in process.Process?  I tried a
>>>list ['filename.exe', 'instruction1 instruction2 ...'] with the same
>>>result.

The docs (in the form of the Powerpoint presentation on his site, which 
I'm reading using OpenOffice) suggest maybe you should be using 
['filename.exe', 'instruction1', 'instruction2', ...] instead...

-Peter


From loicderoyand at yahoo.fr  Sun May  8 05:59:22 2005
From: loicderoyand at yahoo.fr (LDD)
Date: 8 May 2005 02:59:22 -0700
Subject: Newbie : checking semantics
In-Reply-To: <j44r71h56sdcjj07tj2g1i0kn332inq2q9@4ax.com>
References: <1115503520.392357.230620@f14g2000cwb.googlegroups.com>
	<j44r71h56sdcjj07tj2g1i0kn332inq2q9@4ax.com>
Message-ID: <1115546362.927282.151840@o13g2000cwo.googlegroups.com>

Be reassured, I'm not working in any business related to pacemakers,
avionics or railway signalling equipement   ...  :)

I'm just a guy who is learning Python because to me it seems to be the
best alternative to Perl, and trying to know what it is fit for.



From sjmachin at lexicon.net  Mon May 16 17:34:46 2005
From: sjmachin at lexicon.net (John Machin)
Date: Tue, 17 May 2005 07:34:46 +1000
Subject: Anyway to designating the encoding of the "source" for compile?
References: <1116087091.856022.155340@z14g2000cwz.googlegroups.com>
	<1116263722.499345.73260@g43g2000cwa.googlegroups.com>
Message-ID: <sg2i8119lqdrlu0sb6atgrj88cgjrda6f0@4ax.com>

On 16 May 2005 10:15:22 -0700, janeaustine50 at hotmail.com wrote:

>janeaustine50 at hotmail.com wrote:
>> Python's InteractiveInterpreter uses the built-in compile function.
>>
>> According to the ref. manual, it doesn't seem to concern about the
>> encoding of the source string.
>>
>> When I hand in an unicode object, it is encoded in utf-8
>automatically.
>> It can be a problem when I'm building an interactive environment
>using
>> "compile", with a different encoding from utf-8.

I don't understand this. Suppose your "different encoding" is cp125x
(where x is a digit). Would you not do something like this?

compile_input = user_input.decode('cp125x')
code_object = compile(compile_input, ......


>> IDLE itself has the
>> same problem. ( '<a string with non-ascii-encoding>' is treated okay
>> but u'<a string with non-ascii-encoding>' is treated wrong.)
>>
>> Any suggestions or any plans in future python versions?
>
>I've read a posting from Martin Von Loewis mentioning trying to build
>in that feature(optionally marking encoding when calling "compile").
>Anyone knows how it is going on?

Firstly, it would help those who might be trying to help you if you
could post a simple example: input, output, what error message, what
you mean by 'is treated wrong' ... and when it comes to Unicode
objects (indeed any text), show us repr(text) -- "what you see is
often not what others see and often not what you've actually got".

Secondly, are any of the contents of PEP 263 of any use to you?
http://www.python.org/peps/pep-0263.html






From jacob at cd.chalmers.se  Sun May 15 17:34:35 2005
From: jacob at cd.chalmers.se (Jacob Hallen)
Date: 15 May 2005 21:34:35 GMT
Subject: Optimise Europython competition
Message-ID: <mailman.31.1116220889.8733.python-announce-list@python.org>

A classic dilemma for conferences is that if you have many tracks,
you may find that all of a sudden, a room is swamped, and there is
a queue of people wanting to get in. Another problem is that you
risk scheduling talks against each other that have a very large
set of interested people in common.

At Europython we are this year going to try a new way of scheduling,
in order to reduce these problems. Before the schedule is made, we
will give all attendees the opportunity to register what talks they
are most interested in. We then want to make a schedule that is
optimised based on these data.

Since I am no expert in optimising algorithms of this type, and since
the time I have available for these things is limited, I'm turning to
the readers of c.l.p and python-logic for help.

I'm offering the following bounty for a working solution (in Python):

- Free attendance at this years Europython, as a guest of honour
- A Europython T-shirt in a limited special edition
- Fame and gratitude from conference attendees who get better scheduling

The winner of the bounty is the person who scores most points, according
to the criteria below. If we get more than one solution that does good
optimisation, we will award more than one bounty.

Here are the parameters:

1. There are 10 tracks with between 1 and 30 talks in each track.
   You may not schedule two talks in the same track against each other,
   unless there is more talks than available calendar time.

2. A track should be continuous. Each track that is continuous gives you
   10 points.

3. We expect about 300 attendees. About half of them are expected to
   register their interests. Interests may range from a single talk
   to more than half of all the talks. You get one point for each
   talk an attendee can attend out of the ones the attendee has registered
   interest in.

4. Talks are of varying lengths. Lengths can be 30, 45, 60 and 90 minutes.
   The large majority of talks are 30 minutes. Only a very few are 45
   minutes.

5. Rooms come in different sizes
   Room A has 180 seats
   Room B has 140 seats
   Room C has 140 seats
   Room D has 70 seats
   Room E has 70 seats

   Room A-D should be scheduled throughout the conference while room E
   is extra expansion space, only to be used when absolutely necessary.

   For every person scheduled above (Room capacity * (Number of responding
   attendees / Total number of attendees)) you get one point taken off 
   your score.

6. There are a total of 10 90-minute time blocks.

   Day 1: 09:00
   Day 1: 11:00
   Day 1: 14:00
   Day 1: 16:00

   Day 2: 09:00
   Day 2: 11:00
   Day 2: 14:00
   Day 2: 16:00

   Day 3: 09:00
   Day 3: 11:00

   A track should not change room in the middle of a time block. Doing
   so reduces your score by 50 points.

7. Input data
   You get your input data in the form of a list of tuples; one tuple
   per talk.

   Each tuple looks like this:
   
   (<talk id>, <talk length>, <track id>, [list of interested attendees])
   
   Talk length is an integer, all other items are strings.

8. Output data
   You should supply your output data in the form of a list of tuples; one
   tuple per talk.

   Each tuple should look like this:
   
   (<talk id>, <room>, <day>, <starting time>)

   Talk id should be the same as in the input. Room should be a one letter
   string with a value in the range A-E. Day should be a one letter string
   in the range 1-3. Starting time should be a string on the form HH:MM,
   in the 24 hour clock.

Solutions should be sent by email to europython at python.org no later than
1 June 2005. Currently we haven't started gathering real data, but there should be some available for real world testing before 1 June.

-- 


From nyamatongwe+thunder at gmail.com  Sat May 21 18:20:47 2005
From: nyamatongwe+thunder at gmail.com (Neil Hodgson)
Date: Sat, 21 May 2005 22:20:47 GMT
Subject: Fw: evidence john bokma al jazeera connection ?
In-Reply-To: <1T87IN1838493.4652546296@anonymous.poster>
References: <1T87IN1838493.4652546296@anonymous.poster>
Message-ID: <3vOje.10678$E7.5693@news-server.bigpond.net.au>

    There is a response to this on John's web site:

http://johnbokma.com/mexit/2005/05/19/daniel-joseph-min.html

    Neil


From mefjr75 at hotmail.com  Sat May 14 18:27:37 2005
From: mefjr75 at hotmail.com (M.E.Farmer)
Date: 14 May 2005 15:27:37 -0700
Subject: A new to Python question
References: <1116088663.428932.130860@g43g2000cwa.googlegroups.com>
	<rfnhl2-ig5.ln1@Bernd.Nawothnig.dialin.t-online.de>
	<1116093118.599403.35940@g14g2000cwa.googlegroups.com>
	<tsKdnfF2xaKu3BvfRVn-iQ@comcast.com>
	<1116102355.715816.192840@z14g2000cwz.googlegroups.com>
	<42866cb8.177725696@news.oz.net>
Message-ID: <1116109657.494997.315650@o13g2000cwo.googlegroups.com>

I explained what i meant in previous post there was nothing more than
just a discussion I have no real problem here just more of a sore point
in style for me. I feel that parens are quite overloaded and it can be
confusing to newbies.
But if the parens are just fluff then get rid of them, it is clearer *
at least to me * ;)
There are enough things wrapped in parens nowadays it is starting to
look like lisp.
> BTW, UIAM it is the commas that define tuples, so the outermost
parens are really >expression
>parens more than tuple syntax.
Hadn't really thought of that way but it makes sense
>>> w = 1,2,3
>>> w.__doc__
"""tuple() -> an empty tuple
 tuple(sequence) -> tuple initialized from sequence's items

 If the argument is a tuple, the return value is the same object."""
Thanks for your time Bengt!
M.E.Farmer



From duncan.booth at invalid.invalid  Fri May 27 11:21:40 2005
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 27 May 2005 15:21:40 GMT
Subject: Incrementing letters
References: <d770dr$7lu$1@nwrdmz03.dmz.ncs.ea.ibs-infra.bt.com>
	<Xns966388056EE46duncanbooth@127.0.0.1>
	<d779np$2dd$1@ork-un.noris.net>
	<m2is144t6z.fsf@unique.fully.qualified.domain.name.yeah.right>
Message-ID: <Xns9663A66E299E4duncanbooth@127.0.0.1>

Dan Sommers wrote:

> Wolfram Kraus <kraus at hagen-partner.de> wrote:
> 
>> Duncan Booth wrote:
> 
>>>>>> import string
>>>>>> upone = string.maketrans(
>>> 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ',
>>> 'bcdefghijklmnopqrstuvwxyzaBCDEFGHIJKLMNOPQRSTUVWXYZA')
>>> 
>>>>>> string.translate("I've got a string s....", upone)
> 
>>> "J'wf hpu b tusjoh t...."
> 
>>> Note the difference though: the Python code does what you said you
>>> wanted, whereas your sample code corrupts punctuation.
> 
>> Wow, that's quite nice. You really learn something new every day :-) A
>> minor improvement: Use string.ascii_letters as the first parameter for
>> string.maketrans

Yes, my first attempt at responding did that, but I changed it because that 
makes the assumption that string.ascii_letters is in a specific order (did 
you know that lowercase came first and uppercase second without checking?)

> 
> And use string.ascii_letters[ 1 : ] + string.ascii_letters[ 0 ] for the
> second parameter to string.maketrans.
> 
Bzzt. Wrong answer. Look closely at the middle of the string.

I did have:

>>> upone = string.maketrans(string.ascii_letters,
    'z'+string.ascii_lowercase[:-1] +
    'Z' + string.ascii_uppercase[:-1])

but as I said, that makes too many assumptions for my liking about the 
contents of those variables.


From elie at flashmail.com  Sun May 15 03:30:59 2005
From: elie at flashmail.com (Eli)
Date: 15 May 2005 00:30:59 -0700
Subject: Question about extending the interperter
In-Reply-To: <mailman.15.1115978554.29328.python-list@python.org>
References: <1115654593.479760.52610@o13g2000cwo.googlegroups.com>
	<mailman.15.1115978554.29328.python-list@python.org>
Message-ID: <1116142259.356209.86070@z14g2000cwz.googlegroups.com>

Thanks for your answer, I've tried the way Fredrik suggested which
pointed out to a solution.

cheers



From ninjalabs at gmail.com  Mon May 16 10:05:44 2005
From: ninjalabs at gmail.com (Chris)
Date: 16 May 2005 07:05:44 -0700
Subject: Web server platform for beginner
In-Reply-To: <42889bc1$0$64748$e4fe514c@news.xs4all.nl>
References: <1116247947.853539.316620@g49g2000cwa.googlegroups.com>
	<42889bc1$0$64748$e4fe514c@news.xs4all.nl>
Message-ID: <1116250197.036479.61030@z14g2000cwz.googlegroups.com>

If only i'd seen that page ;-)

Thanks for the heads up

Cheers,

- Chris.



From eurleif at ecritters.biz  Sat May 28 07:45:26 2005
From: eurleif at ecritters.biz (Leif K-Brooks)
Date: Sat, 28 May 2005 11:45:26 GMT
Subject: search/replace in Python (solved)
In-Reply-To: <d79k8u$6cs$1@domitilla.aioe.org>
References: <d78opv$l99$1@domitilla.aioe.org>
	<mailman.209.1117263264.18027.python-list@python.org>
	<YXXle.7711$Cz3.933739@monger.newsread.com>
	<d79k8u$6cs$1@domitilla.aioe.org>
Message-ID: <qRYle.7712$Cz3.934030@monger.newsread.com>

Vamsee Krishna Gomatam wrote:
> text = re.sub( "<google>([^<]*)</google>", r'<a
> href="http://www.google.com/search?q=\1">\1</a>', text )

But see what happens when text contains spaces, or quotes, or
ampersands, or...


From mnations at gmail.com  Thu May 26 16:09:46 2005
From: mnations at gmail.com (Mudcat)
Date: 26 May 2005 13:09:46 -0700
Subject: Design problem...need some ideas
In-Reply-To: <1117081206.100096.298770@g49g2000cwa.googlegroups.com>
References: <1117081206.100096.298770@g49g2000cwa.googlegroups.com>
Message-ID: <1117138186.239544.229700@g43g2000cwa.googlegroups.com>

bump

Anyone? I don't need code. Just widgets and a compass for the right
direction.



From pugnatio at gmail.com  Thu May 12 11:34:18 2005
From: pugnatio at gmail.com (pugnatio at gmail.com)
Date: 12 May 2005 08:34:18 -0700
Subject: Creating new StructuredText-like content type for Zope/Plone
Message-ID: <1115912058.576813.292150@g44g2000cwa.googlegroups.com>

I prefer to use my own text format instead of StructuredText or the
like, because I also use emacs outline mode a lot.

What would be the best approach for creating this new content type in
Zope/Plone? Writing a new Plone product with page templates seems
fairly involved, but maybe it's desirable to have that control.

Would Archetypes suffice?

Thanks in advance,

--tobias



From mcherm at mcherm.com  Tue May 24 12:46:10 2005
From: mcherm at mcherm.com (Michael Chermside)
Date: Tue, 24 May 2005 09:46:10 -0700
Subject: line-by-line output from a subproce
Message-ID: <20050524094610.mu1i6j0fs9gg08gk@login.werra.lunarpages.com>

I wrote:
> I am using the subprocess module to invoke a command-line utility
> [...] I would like to process the output line-by-line [...]
> rather than running [...] to completion

Simon Percivall writes:
> Okay, so the reason what you're trying to do doesn't work is that the
> readahead buffer used by the file iterator is 8192 bytes, which clearly
> might be too much.

Jp Calderone writes:
>     def iterread(fobj):
>         return iter(fobj.readline, '')

Thanks folks... that did it nicely!

-- Michael Chermside



From lee_cullens at mac.com  Tue May 17 00:32:33 2005
From: lee_cullens at mac.com (Lee Cullens)
Date: Tue, 17 May 2005 00:32:33 -0400
Subject: Python Interest Group Query
Message-ID: <103EFE5F-2E0D-402C-8455-A2A17C6C697E@mac.com>

Python Interest Group Query

I'm aware of the Boston PIG, a smaller one in Amherst and have been  
told that there is possibly a PIG in Manchester, NH.

Basically I'm trying to find out if there are any, or any interest in  
(or even any other Python users at all :~)) in a PIG in the northern  
NE corridor (Vermont, New Hampshire, Maine).

I'm a recent Mac and Python convert working at some multimedia
software development, and retired from a software engineering
career.  I live in western NH and back in the late 80's commuted to
Boston and NY, so I'm not very keen on such anymore :~)

Thank you,
Lee C


From "myname" at example.invalid  Sun May 29 10:23:20 2005
From: "myname" at example.invalid (VK)
Date: Sun, 29 May 2005 16:23:20 +0200
Subject: Entry scroll doesn't work
Message-ID: <3fu1jhF9klm2U1@news.dfncis.de>

Hi!
Can entry widget be scrolled?
VK

TypeError: xview() takes exactly 2 arguments (4 given)

Code:



from Tkinter import *
class ScrollEntry:
         def __init__(self):
             self.root = Tk()
             self.scrollbar = Scrollbar(self.root,orient=HORIZONTAL,)
             self.entry = Entry(self.root,xscrollcommand=self.scrollbar.set)
             self.entry.focus()
             self.entry.pack(side=TOP,fill=X)
             self.scrollbar.pack(fill=X)
             self.scrollbar.config(command=self.entry.xview)
             self.entry.config()


a=ScrollEntry()
a.root.mainloop()


From sjmachin at lexicon.net  Thu May 19 18:39:44 2005
From: sjmachin at lexicon.net (John Machin)
Date: Fri, 20 May 2005 08:39:44 +1000
Subject: Comparing 2 similar strings?
References: <24a6d$428b9c10$d1b717f8$2300@PRIMUS.CA>
	<428BA05D.1010600@lsupcaemnt.com>
	<3d9n815cpmavos1fl6ts712h9qogdv3fur@4ax.com>
	<tOydnZJPi5FmeBbfRVn-3A@comcast.com>
	<ukqn811uo3qaa5lpihfq1fu71auuslel10@4ax.com>
	<wOSdnW21Bo1qlBHfRVn-uQ@comcast.com>
	<153o811mt7uhqa3aojb5101sd7qo4jrgps@4ax.com>
	<pan.2005.05.19.15.47.09.713982@REMOVETHIScyber.com.au>
Message-ID: <053q81p4fivbdpunaedsk618u08jdku7qg@4ax.com>

On Fri, 20 May 2005 01:47:15 +1000, Steven D'Aprano
<steve at REMOVETHIScyber.com.au> wrote:

>On Thu, 19 May 2005 14:09:32 +1000, John Machin wrote:
>
>> None of the other approaches make the mistake of preserving the first
>> letter -- this alone is almost enough reason for jettisoning soundex.
>
>Off-topic now, but you've made me curious.
>
>Why is this a bad idea?
>
>How would you handle the case of "barow" and "marow"? (Barrow and
>marrow, naturally.) Without the first letter, they sound identical. Why is
>throwing that information away a good thing?

Sorry if that was unclear. By "preserving the first letter", I meant
that in "standard" soundex, the first letter is not transformed into a
digit.

Karen -> K650 
Kieran -> K650
(R->6, N->5; vowels->0 and then are squeezed out)

Now compare this:
Aaron -> A650
Erin -> E650

Bearing in mind that the usual application of soundex is "all or
nothing", the result is Karen == Kieran, but Aaron !== Erin, which is
at the very least extremely inconsistent.

A better phonetic-key creator would produce the same result for each
of the first pair, and for each of the second pair -- e.g. KARAN and
ARAN respectively.

Also consider Catherine vs Katherine.

Cheers,
John



From loicderoyand at yahoo.fr  Sat May  7 18:05:20 2005
From: loicderoyand at yahoo.fr (LDD)
Date: 7 May 2005 15:05:20 -0700
Subject: Newbie : checking semantics
Message-ID: <1115503520.392357.230620@f14g2000cwb.googlegroups.com>

Hi everyone,

I am new to python and was very enthustic about its possibilities when
I discover that python is really what it is : just a scripting
language.

What disappoints me is that pyton will happily accept and execute this
code :

if ( aConditionThatIsFalse ):
     AFunctionThatIsntDefined()

print "Hello world"

The fact that python doesn't check if the symbol
AFunctionThatIsntDefined is defined, is really bad when you develop big
pieces of code. You will never be sure that your code is free of this
kind of dummy errors and testing every possible execution paths is
nightmarish !

Is there a way to force Python to check the definition of symbol ?

LDD



From reinhold-birkenfeld-nospam at wolke7.net  Mon May  2 15:17:00 2005
From: reinhold-birkenfeld-nospam at wolke7.net (Reinhold Birkenfeld)
Date: Mon, 02 May 2005 21:17:00 +0200
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <mailman.39.1115056020.6583.python-list@python.org>
References: <d4u60o$akh$1@news2.netvision.net.il>	<mailman.22.1115040588.6583.python-list@python.org>	<xkvhis21ohyx.fsf@cisco.com>
	<mailman.39.1115056020.6583.python-list@python.org>
Message-ID: <3dnco7F6sgmkrU1@individual.net>

darren kirby wrote:
> quoth the Ganesan Rajagopal:
>> I am stuck on level 3. I've tried every re that I can think of. Some body
>> give me a clue.
>>
>> Ganesan
>>
>> --
>> Ganesan Rajagopal
> 
>>>> t = /text of page source.../
>>>> re.findall('[a-z][A-Z]{3}[a-z]{1}[A-Z]{3}[a-z]', t)
> 
> You should get ten results. Consider all ten together to get your solution...

Somehow writing '[a-z]{1}' is strange...

Reinhold


From getvijay at gmail.com  Fri May 27 17:21:36 2005
From: getvijay at gmail.com (Vijay Kumar)
Date: Fri, 27 May 2005 15:21:36 -0600
Subject: f->f_locals is NULL for a method call
Message-ID: <f4c94baa05052714212d87e6a5@mail.gmail.com>

hi,

I have written a trace function in C using the Python/C API. I want to
find whether the call occured is a function call or method call and if
a method call, its self object.

int tracer(PyObject *obj, PyObject *f, int what, PyObject *args){
PyObject *item,*SelfItem;
switch(what){
case PyTrace_CALL: {
printf("%s",PyString_AS_STRING(f->f_code->co_name));
if(f->f_code->co_argcount>0 &&
strcmp(PyString_AS_STRING(PyTuple_GetItem(f->f_code->co_varnames,0),"self")==0)
{
//checks if the call is a method call
printf("Method\n");
SelfItem = f->f_locals;
}  else printf("Function");
} }

The SelfItem obtained is a NULL object (for method call).But when I
wrote the same trace function in python, f->f_locals is a dictionary
with "self" as a keyword.
How can i get the dictionary in C?

Thanks,
Vijay.


From onfrek at yahoo.com  Fri May 27 09:31:56 2005
From: onfrek at yahoo.com (Michael Onfrek)
Date: 27 May 2005 06:31:56 -0700
Subject: Copy paste in entry widget
Message-ID: <1117200716.423741.257870@f14g2000cwb.googlegroups.com>

Hi,
is copy, paste, cut of selection possible in entry widget? Docs say
selection must be copied by default, in my programm it doesn't work.
Regards, M.O.



From kenneth.pronovici at cedar-solutions.com  Sun May 22 13:25:12 2005
From: kenneth.pronovici at cedar-solutions.com (Kenneth Pronovici)
Date: Sun, 22 May 2005 12:25:12 -0500
Subject: EpyDoc problem
In-Reply-To: <428C4867.4050906@geochemsource.com>
References: <428A5CAA.906@geochemsource.com>
	<428A66A8.9090000@geochemsource.com>
	<mailman.164.1116443342.8733.python-list@python.org>
	<1116446157.756809.97320@g49g2000cwa.googlegroups.com>
	<428C4867.4050906@geochemsource.com>
Message-ID: <20050522172512.GA11769@cedar-solutions.com>

> >EpyDoc is hosted in Sourceforge. This alone may answer your question
> >about a bug-tracker:
> >
> >http://sourceforge.net/tracker/?atid=405618&group_id=32455&func=browse
> >  
> >
> Well, I wrote to the bug tracker some days ago but no answer so far.

I am the maintainer of the Debian epydoc package.  Lately, I have also
found it difficult to contact epydoc's author, Edward Loper.  I'm
currently not sure whether my mail is getting spam-filtered or whether
something else has happened and he's not available any more.  Maybe
someone on the list knows what's going on?

I think your best bet is to file the bug (which you have done) and wait
for a reply, keeping in mind that it might be a while before someone has
time to deal with your bug.  Most people writing free software are
volunteers, after all. 

KEN

-- 
Kenneth J. Pronovici <pronovic at ieee.org>
http://www.cedar-solutions.com/
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From Bernd.Nawothnig at t-online.de  Sat May 14 13:01:15 2005
From: Bernd.Nawothnig at t-online.de (Bernd Nawothnig)
Date: Sat, 14 May 2005 19:01:15 +0200
Subject: A new to Python question
References: <1116088663.428932.130860@g43g2000cwa.googlegroups.com>
Message-ID: <rfnhl2-ig5.ln1@Bernd.Nawothnig.dialin.t-online.de>

On 2005-05-14, David wrote:

> abc(x,y,dotp,sumx,maxv)

(x,y,dotp,sumx,maxv) = abc(x,y,dotp,sumx,maxv)




Bernd

-- 
Those who desire to give up freedom in order to gain security,
will not have, nor do they deserve, either one. [T. Jefferson]


From rrr at ronadam.com  Sun May 15 16:30:53 2005
From: rrr at ronadam.com (Ron Adam)
Date: Sun, 15 May 2005 16:30:53 -0400
Subject: Quick Reference from module doc strings.
In-Reply-To: <42861D22.6000701@ronadam.com>
References: <42861D22.6000701@ronadam.com>
Message-ID: <4287B17D.4050102@ronadam.com>


I think this deserves a little more of a description than I gave it 
initially.

The routine in the previous message does a little more than just print 
out __doc__ strings. It outputs a formatted alphabetical list of objects 
in a module with each objects, name, class or type, and then tries to 
determine if the doc string is part of the class or was inherited from a 
parent class.  If the object is a storage type, then it will print the 
objects contents/values giving you what they are at import time.  If the 
string or list, tuple, or dict is large, it will print just the 
beginning with '......' at the end to let you know there is more.

So what you get is a printable alphabetical quick reference guide with 
the first level class's, functions, exceptions, and attributes with the 
initial values after importing.  (You can also do this with a single 
class and get it's methods and attributes.)

Here is the first part of __builtins__ (Python 2.3) as an example.  If 
anyone has any suggestions or corrections, Please let me know.

Cheers,
_Ron Adam


----------------------------------------
__builtins__
Class:<type 'module'>

Built-in functions, exceptions, and other objects.

Noteworthy: None is the `nil' object; Ellipsis represents `...' in slices.

----------------------------------------
__builtins__.__debug__
Class:<type 'bool'>

__builtins__.__debug__=True

----------------------------------------
__builtins__.__doc__
Class:<type 'str'>

__builtins__.__doc__="""Built-in functions, exceptions, and other objects.

Noteworthy: None is the `nil' object; Ellipsis represents `...' in 
slices."""

----------------------------------------
__builtins__.__import__
Module:__builtin__
Class:<type 'builtin_function_or_method'>

__import__(name, globals, locals, fromlist) -> module

Import a module.  The globals are only used to determine the context;
they are not modified.  The locals are currently unused.  The fromlist
should be a list of names to emulate ``from name import ...'', or an
empty list to emulate ``import name''.
When importing a module from a package, note that __import__('A.B', ...)
returns package A when fromlist is empty, but its submodule B when
fromlist is not empty.

----------------------------------------
__builtins__.__name__
Class:<type 'str'>

__builtins__.__name__="__builtin__"

----------------------------------------
__builtins__.abs
Module:__builtin__
Class:<type 'builtin_function_or_method'>

abs(number) -> number

Return the absolute value of the argument.

----------------------------------------
__builtins__.apply
Module:__builtin__
Class:<type 'builtin_function_or_method'>

apply(object[, args[, kwargs]]) -> value

Call a callable object with positional arguments taken from the tuple args,
and keyword arguments taken from the optional dictionary kwargs.
Note that classes are callable, as are instances with a __call__() method.

Deprecated since release 2.3. Instead, use the extended call syntax:
     function(*args, **keywords).

----------------------------------------
__builtins__.ArithmeticError
Module:exceptions
Type:<type 'classobj'>

Base class for arithmetic errors.

----------------------------------------
__builtins__.AssertionError
Module:exceptions
Type:<type 'classobj'>

Assertion failed.

----------------------------------------
__builtins__.AttributeError
Module:exceptions
Type:<type 'classobj'>

Attribute not found.

----------------------------------------
__builtins__.basestring
Module:__builtin__
Class:<type 'type'>

Type basestring cannot be instantiated; it is the base for str and unicode.

----------------------------------------
__builtins__.bool
Module:__builtin__
Class:<type 'type'>

bool(x) -> bool

Returns True when the argument x is true, False otherwise.
The builtins True and False are the only two instances of the class bool.
The class bool is a subclass of the class int, and cannot be subclassed.

----------------------------------------
__builtins__.buffer
Module:__builtin__
Class:<type 'type'>

buffer(object [, offset[, size]])

Create a new buffer object which references the given object.
The buffer will reference a slice of the target object from the
start of the object (or at the specified offset). The slice will
extend to the end of the target object (or with the specified size).

----------------------------------------
Continued.....




And here is the program again.



def getobjs(object, dlist=[], lvl=0, maxlevel=1):
     """ Retreive a list of sub objects from an object. """
     if object not in dlist:
         dlist.append(object)
     if lvl<maxlevel:
         dobj = dir(eval(object))
         for item in dobj:
             try:
                 dlist = getobjs(object+'.'+item, dlist, lvl+1)
             except:
                 pass
     return dlist

def printdoc(objectlist):
     """ Return a sorted printable quick reference
         guide from a list of objects. """
     outtext = []
     objectlist.sort(lambda x, y: cmp(x.lower(), y.lower()))
     for obj in objectlist:
         object = eval(obj)
         object_type = type(object)
         outtext.append('-'*40+'\n')
         outtext.append(str(obj)+'\n')
         if hasattr(object, '__module__'):
             outtext.append("Module:"+str(object.__module__)+'\n')
         if hasattr( object,'__class__'):
             outtext.append("Class:"+str(object.__class__)+'\n\n')
         else:
             outtext.append("Type:"+str(object_type)+'\n\n')
         if isinstance(object,str):
             if len(object)>200:
                 s = object[0:200]+"......"
             else:
                 s = object
             outtext.append(obj+'=')
             if '\n' in s: quotes='"""'
             else: quotes ='"'
             if len(s)>60: print
             outtext.append(quotes+s+quotes+'\n\n')
         elif (isinstance(object,str)
                 or isinstance(object,int)
                 or isinstance(object,bool)
                 or isinstance(object,tuple)
                 or isinstance(object,list)
                 or isinstance(object,dict)):
             s = str(object)
             if len(s)<200:
                 outtext.append(obj+'='+s+'\n\n')
             else:
                 outtext.append(obj+'='+s[0:200]+'......\n\n')
         if hasattr(object,'__doc__'):
             if object.__doc__ != type(object).__doc__:
                 outtext.append(str(object.__doc__)+'\n\n')
     return ''.join(outtext)

def quick_ref(name):
     """
     quick_ref(module_name) -> printable string

     Generate a sorted quick reference guide from an objects
     doc strings.  The module_name is a string with the name of
     the module or class to get documents string from.

     Example:
         import os
         print quick_ref('os')
     """
     objlist = getobjs(name)
     return printdoc(objlist)

if __name__ == "__main__":
     #import os
     print quick_ref('__builtins__')






From skip at pobox.com  Wed May 11 21:43:34 2005
From: skip at pobox.com (Skip Montanaro)
Date: Wed, 11 May 2005 20:43:34 -0500
Subject: Python Documentation (should be better?)
In-Reply-To: <428276e8$0$318$626a14ce@news.free.fr>
References: <5C99C308457E6D4EA5448EA52A66004A675A6E@or.mxim.com>
	<17026.26789.592527.975821@montanaro.dyndns.org>
	<mailman.398.1115843305.29826.python-list@python.org>
	<428276e8$0$318$626a14ce@news.free.fr>
Message-ID: <17026.46278.169449.880219@montanaro.dyndns.org>

    Ivan> I can never remember ...where to find string methods

    >>>> dir('')
    Bruno> ['__add__', '__class__', ...

Also:

    >>> help(str)
    Help on class str in module __builtin__:

    class str(basestring)
     |  str(object) -> string
     |  
     |  Return a nice string representation of the object.
     |  If the argument is a string, the return value is the same object.
     |  
     |  Method resolution order:
     |      str
     |      basestring
     |      object
     |  
     |  Methods defined here:
    ...

Skip


From modelnine at ceosg.de  Wed May  4 17:23:12 2005
From: modelnine at ceosg.de (Heiko Wundram)
Date: Wed, 4 May 2005 23:23:12 +0200
Subject: Bandwith Shaping
In-Reply-To: <42791055.1090809@anvilcom.com>
References: <1115228921.520113.245920@z14g2000cwz.googlegroups.com>
	<42791055.1090809@anvilcom.com>
Message-ID: <200505042323.15342.modelnine@ceosg.de>

Am Mittwoch, 4. Mai 2005 20:11 schrieb phil:
> But those packets ( I assume TCP ) are going to stack up somewhere,
> the sender is gonna keep trying and retrying.  In other words
> you are increasing overall load to someone's router and the
> network.

This is not true, as TCP tries to adjust its sending speed at the sender end 
to the receiving speed at the receiver end (it raises speed until packets 
start getting dropped, and when they are, it starts decreasing send speed 
again).

Of course, this requires a proper TCP implementation, but any operating system 
should have one.

What you said, with a sleep(.01) is actually not quite the way to go. What you 
could do is something like the following:

MAX_RATE = 1*1024 # (1k)
MAX_SEND = 1024
data = "blabber"
sent = 0
starttime = time.time() - 0.01
while data:
	curtime = time.time()
	if sent / ( curtime - starttime ) > MAX_RATE:
		time.sleep(0.5)
		continue
	newsent = sock.send(data[:MAX_SEND])
	data = data[newsent:]
	sent += newsent

> Someone correct me if I'm drunk on this.

See above. ;)

-- 
--- Heiko.
listening to: Pearl Jam - Man Of The Hour
  see you at: http://www.stud.mh-hannover.de/~hwundram/wordpress/
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From peter at engcorp.com  Tue May  3 07:19:23 2005
From: peter at engcorp.com (Peter Hansen)
Date: Tue, 03 May 2005 07:19:23 -0400
Subject: py2exe and library.zip
In-Reply-To: <mailman.76.1115095357.6583.python-list@python.org>
References: <mailman.76.1115095357.6583.python-list@python.org>
Message-ID: <5uadnUTTqv6Iw-rfRVn-qw@powergate.ca>

Timothy Smith wrote:
> is it possible instead of py2exe putting all library's in a zip file, to 
> just put them in a sub dir?

Anything's possible.  Maybe you could explain what you're actually 
trying to accomplish (or the reasons) so we can better understand where 
you're going with this...

-Peter


From ruach at chpc.utah.edu  Tue May 10 12:40:35 2005
From: ruach at chpc.utah.edu (Matthew Thorley)
Date: Tue, 10 May 2005 10:40:35 -0600
Subject: object oriented inheritance problem
Message-ID: <d5qo62$l2o$1@vegh.ks.cc.utah.edu>

I am trying to inherit from ElementTree so I can add some methods. This
is the code I am trying to make work, and the following is the error I
am getting.

from elementtree import ElementTree
class AcidTree(ElementTree):
    def write_string(self):
        ....

File "/home/hope/var/proj/acid/server/mgacparse.py", line 22, in ?
    class AcidTree(ElementTree):
TypeError: Error when calling the metaclass bases
    module.__init__() takes at most 2 arguments (3 given)


I have *no* idea what is going on here. AcidTree does not implement an
__init__. It just adds two simple methods, which aren't even being
called when then exception is thrown. The exception occurs on the class
definition line when I try to inherit from ElementTree.

I looked around, and read some stuff in the python cook book, and
everything I've seen indicates that it should just work. My only thought
is that its a 'oldstyle' vs 'newstyle' classes issue. I know that
elementtree was written to be compatible with python 1.5 so maybe it
doesn't work with the new stuff. But thats just a crazy assumption I
made up to make myself feel better.

If anyone could please exmplain what my problem *really* is I would
appreciate it greatly. Thanks very much.

-Matthew


From newsgroups at jhrothjr.com  Fri May 27 10:41:14 2005
From: newsgroups at jhrothjr.com (John Roth)
Date: Fri, 27 May 2005 08:41:14 -0600
Subject: Case Sensitive, Multiline Comments
References: <1117137316.140791.210430@g14g2000cwa.googlegroups.com>
	<8664x5y92g.fsf@guru.mired.org> <429654DA.9050903@lexicon.net>
	<1117154013.092736.298310@g14g2000cwa.googlegroups.com>
	<qc7d9112aqr5tj8devjeaign84dc21ti8p@4ax.com>
	<Xns96635F84E6901duncanbooth@127.0.0.1>
Message-ID: <119eccdgjtaru5d@news.supernews.com>

"Duncan Booth" <duncan.booth at invalid.invalid> wrote in message 
news:Xns96635F84E6901duncanbooth at 127.0.0.1...
> Dennis Lee Bieber wrote:
>
>> On 26 May 2005 17:33:33 -0700, "Elliot Temple" <curi42 at gmail.com>
>> declaimed the following in comp.lang.python:
>>
>>> Thanks for the link on case sensitivity.  I'm curious about the person
>>> who found case sensitivity useful though: what is it useful for?
>>>
>>      Making a language run faster on slow machines since the syntax
>> parsing doesn't have to do the equivalent of upper or lower casing
>> anything that is not a string literal before checking for keywords or
>> identifiers.
>>
>>      Consider the time spent by languages like Ada and Fortran when
>> they have to do case normalization every time you compile.
>>
> That isn't a good argument for case sensitivity. You really aren't going 
> to
> be able to measure a slowdown in compilation speed just because the
> compiler has to lowercase all the identifiers before using them.

Actually it is, but you have to get out of ASCII into the wider world
of all of the real languages out there. Something I heard from one of the
people who invented XML is that it originally started out as case
insensitive, and they had quite an extensive discussion about it. When they
made it case sensitive, one of the basic tools sped up by a factor of three.
Doing case translations in Unicode following all of the rules for all of the
world's languages is, for want of a better world, a real bitch.

John Roth 



From peter at engcorp.com  Wed May 18 00:55:59 2005
From: peter at engcorp.com (Peter Hansen)
Date: Wed, 18 May 2005 00:55:59 -0400
Subject: Representing ambiguity in datetime?
In-Reply-To: <mailman.121.1116368416.8733.python-list@python.org>
References: <mailman.121.1116368416.8733.python-list@python.org>
Message-ID: <y6-dnejNyq2mVhffRVn-pw@powergate.ca>

Terry Hancock wrote:
> What do you do when a date or time is
> incompletely specified?  

Doesn't the answer to this pretty much entirely depend on how you are 
going to make use of the information?  What are your use cases?


From igorcarron at gmail.com  Tue May 31 05:25:26 2005
From: igorcarron at gmail.com (igorcarron at gmail.com)
Date: 31 May 2005 02:25:26 -0700
Subject: How do you drive-by-wire a car using Python ?
In-Reply-To: <mailman.262.1117485409.18027.python-list@python.org>
References: <1117478120.880612.75250@g44g2000cwa.googlegroups.com>
	<mailman.262.1117485409.18027.python-list@python.org>
Message-ID: <1117531526.205312.192360@f14g2000cwb.googlegroups.com>

Please note we had to avoid trash cans when the DARPA folks came to
visit us. Our vehicle aims at being a garbage avoidance system instead
:-)

Igor.



From ckwiguno at gmail.com  Tue May  3 10:17:06 2005
From: ckwiguno at gmail.com (custard_pie)
Date: 3 May 2005 07:17:06 -0700
Subject: sorting list and then return the index of the sorted item
In-Reply-To: <1115128668.633320.285090@f14g2000cwb.googlegroups.com>
References: <1115127433.984686.99060@f14g2000cwb.googlegroups.com>
	<1115128668.633320.285090@f14g2000cwb.googlegroups.com>
Message-ID: <1115129826.951292.73070@f14g2000cwb.googlegroups.com>

Okay...THanks a lot everyone,.. Those codes are a real help....



From doodle4 at gmail.com  Mon May 16 13:32:41 2005
From: doodle4 at gmail.com (ashtonn@gmail.com)
Date: 16 May 2005 10:32:41 -0700
Subject: optparse global
Message-ID: <1116264761.204065.15980@g14g2000cwa.googlegroups.com>

Hello,

How do i make an option passed through command line, using optparse
global. I need to import this value in another file.

This is what iam trying to do.

$python test.py -d ffffffffffff

i should be able to store 'ffffffffffff' as global so that i could
access this value in another file. If 'ffffffffffff' is not given, then
a default value stored in
parser.add_options("-d", default="01ff010BFFFF", action="store")
will be returned.

Thanks,
-Ashton



From lbates at syscononline.com  Fri May 13 09:39:54 2005
From: lbates at syscononline.com (Larry Bates)
Date: Fri, 13 May 2005 08:39:54 -0500
Subject: doc tags?
In-Reply-To: <mailman.23.1115990661.29328.python-list@python.org>
References: <mailman.23.1115990661.29328.python-list@python.org>
Message-ID: <4284AE2A.4070106@syscononline.com>

In python they are called decorators, but I've never had a
need to use them myself, but then I'm a little old fashioned.

Larry Bates

Wolfram Kriesing wrote:
> i was already searching and remember i had seen something like "its not needed".
> 
> Anyway, are there any doc tags, like in Java/PHPDoc etc, where you can
> describe parameters (@param[eter]), return values (@ret[urn]),
> attributes (@var), references (@see), etc?
> 
> I guess I have just not found the link to the last flameware about it :-))
> 



From bokr at oz.net  Wed May  4 18:33:43 2005
From: bokr at oz.net (Bengt Richter)
Date: Wed, 04 May 2005 22:33:43 GMT
Subject: xmlrpclib and decoding entity references
References: <1115132826.795008.320190@z14g2000cwz.googlegroups.com>
	<427827a2$1_3@newspeer2.tds.net>
	<1115210118.418388.164710@g14g2000cwa.googlegroups.com>
	<1115219827.829558.200940@f14g2000cwb.googlegroups.com>
Message-ID: <427924a7.671510130@news.oz.net>

On 4 May 2005 08:17:07 -0700, "Chris Curvey" <ccurvey at gmail.com> wrote:

>Here is the solution.  Incidentally, the client is Cold Fusion.
>
I suspect your solution may be not be general, though it would seem to
satisfy your use case. It seems to be true for python's latin-1 that
all the first 256 character codes are acceptable and match unicode 1:1,
even though the windows character map for lucida sans unicode font
with latin-1 codes shows undefined-char boxes for codes 0x7f-0x9f.

 >>> sum(chr(i).decode('latin-1') == unichr(i) for i in xrange(256))
 256
 >>> sum(unichr(i).encode('latin-1') == chr(i) for i in xrange(256))
 256

Not sure what to make of that. E.g. should unichr(0x7f).encode('latin-1')
really be legal, or is it just expedient to have latin-1 serves as a kind of
compressed utf_16_le? E.g., there's 256 Trues in these:

 >>> sum(unichr(i).encode('utf_16_le')[0] == chr(i) for i in xrange(256))
 256
 >>> sum(unichr(i).encode('utf_16_le')[1] == '\x00' for i in xrange(256))
 256

Maybe we could have a 'u_as_str' or 'utf_16_le_lsbyte' codec for that, so the above would be spelled
 >>> sum(unichr(i).encode('u_as_str') == chr(i) for i in xrange(256)) # XXX faked, not implemented
 256

Utf-8 only goes half way:
 >>> sum(unichr(i).encode('utf-8') == chr(i) for i in xrange(256))
 128


<aside>
What do you think, Martin? ;-)
Maybe 'ubyte' or 'u256' would be a user-friendlier codec name? Or 'ustr'?
</aside>

>import re
>import logging
>import logging.config
>import os
>import SimpleXMLRPCServer
>
>logging.config.fileConfig("logging.ini")
>
>########################################################################
>class
>LoggingXMLRPCRequestHandler(SimpleXMLRPCServer.CGIXMLRPCRequestHandler):
>    def __dereference(self, request_text):
>        entityRe = re.compile("((?P<er>&#x)(?P<code>..)(?P<semi>;))")
What about entity &#x263a; ? Or the same in decimal: &#9786;
  :)
>        for m in re.finditer(entityRe, request_text):
>            hexref = int(m.group(3),16)
>	    charref = chr(hexref)
                      unichr(hexref) would handle >= 256, if you used unicode.
>	    request_text = request_text.replace(m.group(1), charref)
>
>	return request_text
>
>
>#-------------------------------------------------------------------
>    def handle_xmlrpc(self, request_text):
>        logger = logging.getLogger()
>	#logger.debug("************************************")
>	#logger.debug(request_text)
                      ^^^^^^^^^^^^  I would suggest repr(request_text) for debugging, unless you
know that your logger is going to do that for you. Otherwise a '%s' format may hide things that you'd like to know.

>	try:
>	    #logger.debug("-------------------------------------")
>	    request_text = self.__dereference(request_text)
>	    #logger.debug(request_text)
>	    request_text = request_text.decode("latin-1").encode('utf-8')
AFAIK, XML can be encoded with many encodings other than latin-1, so you are essentially
saying here that you know it's latin-1 somehow. Theoretically, your XML could
start with something like <?xml encoding='UTF-8'?> and .decode("latin-1") is only going to
"work" when the source is plain ascii. I wouldn't be surprised if that's what's happening
up to the point where you __dereference, but str.replace doesn't care that you are potentially
making a utf-8 encoding invalid by just replacing 8-bit characters with what is legal latin-1.
after that, you are decoding your utf-8_clobbered_with_latin-1 as latin-1 anyway, so it "works".
At least I think this is a consistent theory. See if you can get the client to send something
with characters >128 that aren't represented as &#x..; to see if it's actually sending utf-8.


>	    #logger.debug("************************************")
>	except Exception, e:
>	    logger.error(request_text)
again, suggest repr(request_text)
>	    logger.error("had a problem dereferencing")
>	    logger.error(e)
>
>	SimpleXMLRPCServer.CGIXMLRPCRequestHandler.handle_xmlrpc(self,
>request_text)
>########################################################################
>class Foo:
>    def settings(self):
>        return os.environ
>    def echo(self, something):
>        logger = logging.getLogger()
>	logger.debug(something)
repr it, unless you know ;-)

>        return something
>    def greeting(self, name):
>        return "hello, " + name
>
># these are used to run as a CGI
>handler = LoggingXMLRPCRequestHandler()
>handler.register_instance(Foo())
>handler.handle_request()
>

Regards,
Bengt Richter


From megahrtz at gte.net  Thu May  5 20:34:41 2005
From: megahrtz at gte.net (Alex N)
Date: 5 May 2005 17:34:41 -0700
Subject: F.readline
In-Reply-To: <UP6dnb9wefOrK-ffRVn-3A@speakeasy.net>
References: <000001c551ca$15ddd3b0$6400a8c0@grondor>
	<mailman.79.1115336847.29826.python-list@python.org>
	<UP6dnb9wefOrK-ffRVn-3A@speakeasy.net>
Message-ID: <1115339681.312476.282990@z14g2000cwz.googlegroups.com>


Erik Max Francis wrote:
> Robert Kern wrote:
>
> > There is no such command built in. You will have to build it
yourself
> > out of the components that are available.
>
> linecache is probably what he's looking for.
>
> --
> Erik Max Francis && max at alcyone.com && http://www.alcyone.com/max/
> San Jose, CA, USA && 37 20 N 121 53 W && AIM erikmaxfrancis
>    No man who needs a monument ever ought to have one.
>    -- Nathaniel Hawthorne

I figured I would have to write one, luckily I am not doing many Lines.
Thank you.

Alex Nordhus
Clipboard Copy and Paste !
http://www.pasteaway.com



From prabapython at yahoo.co.in  Fri May 13 06:03:58 2005
From: prabapython at yahoo.co.in (praba kar)
Date: Fri, 13 May 2005 11:03:58 +0100 (BST)
Subject: Reg php equivalent Mail_mime Module in Python
In-Reply-To: 6667
Message-ID: <20050513100358.33722.qmail@web8401.mail.in.yahoo.com>

Dear All,
      email.Message module base we can build message
for mailing services which is like php Mail_mime
module. In php Mail_mime module willautomatically
build all the header fields like content-type,
content-Transfer-encoding, Return-Path and so on for
a mailing messages. I want to know this(Mail_mime)
kind of module in python.
   If Mail_mime like modules are not available
in python kindly give guidenance how to build
message for mailing service.

regards
Prabahar

________________________________________________________________________
Yahoo! India Matrimony: Find your life partner online
Go to: http://yahoo.shaadi.com/india-matrimony


From k04jg02 at kzoo.edu  Thu May 12 07:32:24 2005
From: k04jg02 at kzoo.edu (Joseph Garvin)
Date: Thu, 12 May 2005 11:32:24 +0000
Subject: How "return" no return ?
In-Reply-To: <3ehaurF34ak0U1@individual.net>
References: <3ehaurF34ak0U1@individual.net>
Message-ID: <42833EC8.9030103@kzoo.edu>

Ximo wrote:

>Hello, I want that the return sentence don't return anything, how can I do 
>it?. If i do only return it returns None, and pass don't run too.
>
>Can anyone help me?, thanks.
>XIMO 
>
>
>  
>
Returning None is the same as returning nothing. What exactly are you
trying to do?


From phillip.watts at anvilcom.com  Thu May  5 14:04:21 2005
From: phillip.watts at anvilcom.com (phil)
Date: Thu, 05 May 2005 13:04:21 -0500
Subject: How to detect a double's significant digits
References: <1115314620.902071.323410@f14g2000cwb.googlegroups.com>
Message-ID: <427A6025.8020704@anvilcom.com>

fl = 1.0002
x = str(fl)
pos = x.find('.')
print len( x[pos+1:] )
 >>> 4

mrstephengross wrote:

> Hi all... How can I find out the number of significant digits (to the
> right of the decimal place, that is) in a double? At least, I *think*
> that's what I'm asking for. For instance:
> 
> 0.103 --> 3
> 0.0103 --> 4
> 0.00103 --> 5
> 0.000103 --> 6
> 0.0000103 --> 7
> 
> Thanks in advance!
> --Steve (mrstephengross at hotmail.com)
> 
> 





From exarkun at divmod.com  Fri May 20 16:45:00 2005
From: exarkun at divmod.com (Jp Calderone)
Date: Fri, 20 May 2005 20:45:00 GMT
Subject: buffer_info error
In-Reply-To: <1116620313.966569.154020@g44g2000cwa.googlegroups.com>
Message-ID: <20050520204500.559.197785299.divmod.quotient.5566@ohm>

On 20 May 2005 13:18:33 -0700, "ashtonn at gmail.com" <doodle4 at gmail.com> wrote:
>i am filling in a packet with source and destination address and using
>the buffer_info call to pass on the address to an underlying low level
>call.
>
>The src and dest are strings, but buffer_info expects an array. How do
>i deal with this?

  What's the low-level call you're invoking?

  Jp


From bbcofchina at yahoo.com.cn  Fri May 20 21:19:58 2005
From: bbcofchina at yahoo.com.cn (fdsl ysnh)
Date: Sat, 21 May 2005 09:19:58 +0800 (CST)
Subject: Can you introduce some book  about python?
In-Reply-To: <mailman.4989.1116624266.8732.python-list@python.org>
Message-ID: <20050521011958.93547.qmail@web15007.mail.cnb.yahoo.com>

--- python-list-request at python.org??:

> Send Python-list mailing list submissions to
> 	python-list at python.org
> 
> To subscribe or unsubscribe via the World Wide Web,
> visit
> 	http://mail.python.org/mailman/listinfo/python-list
> or, via email, send a message with subject or body
> 'help' to
> 	python-list-request at python.org
> 
> You can reach the person managing the list at
> 	python-list-owner at python.org
> 
> When replying, please edit your Subject line so it
> is more specific
> than "Re: Contents of Python-list digest..."
> > Today's Topics:
> 
>    1. Re: appending key-value pairs to a dict (Peter
> Hansen)
>    2. Re: Is Python suitable for a huge, enterprise
> size app?
>       (Paul Rubin)
>    3. Re: appending key-value pairs to a dict (Brian
> Beck)
>    4. Re: Comparing 2 similar strings? (Skip
> Montanaro)
>    5. Re: Is Python suitable for a huge, enterprise
> size app?
>       (Paul Rubin)
>    6. Re: buffer_info error (ashtonn at gmail.com)
>    7. Re: appending key-value pairs to a dict (James
> Stroud)
>    8. From the call hook, how do I know more
> precisely what is
>       called? (Vijay Kumar)
>    9. Re: PyGame and Rotozoom (Sorry if OT) (Lee
> Harr)
>   10. Re: buffer_info error (Jp Calderone)
>   11. Re: appending key-value pairs to a dict (Roy
> Smith)
>   12. Re: Is Python suitable for a huge, enterprise
> size app?
>       (Dave Brueck)
>   13. Re: Process monitoring (John Abel)
> > ???: Peter Hansen <peter at engcorp.com>
> ???: python-list at python.org
> ??: Fri, 20 May 2005 16:12:17 -0400
> ??: Re: appending key-value pairs to a dict
> 
> rbt wrote:
> > I know how to setup an empty list and loop thru
> something... appending 
> > to the list on each loop... how does this work
> with dicts?
> > 
> > I'm looping thru a list of files and I want to put
> the file's name and 
> > its sha hash into a dict on each loop.
> 
> Whereas with a list you would call "append" in the
> loop, with a 
> dictionary you simply use an indexed-assignment type
> of access:
> 
> mydict = {}
> for filename in some_list_of_filenames:
>      hash =
> sha.sha(open(filename).read()).hexdigest() # or
> whatever
>      mydict[filename] = hash
> 
> -Peter
> 
> > ???: Paul Rubin <http://phr.cx at NOSPAM.invalid>
> ???: python-list at python.org
> ??: 20 May 2005 13:12:50 -0700
> ??: Re: Is Python suitable for a huge, enterprise
> size app?
> 
> Dave Brueck <dave at pythonapocrypha.com> writes:
> > One thing from your experience that did resonate
> with me is that,
> > except for ftplib and occasionally urllib (for
> basic, one-shot GETs),
> > we don't use any of the standard library's
> "protocol" modules - partly
> > because we had to implement our own HTTP libraries
> for performance and
> > scalability reasons anyway, and partly because we
> had trouble figuring
> > out e.g. all the ins and outs of
> urllib/urllib2/httplib.
> 
> What do you use for HTTPS?  And did you use the
> Cookie module in your
> HTTP servers?  You may have had problems without
> even being aware of
> them (until recently if you used Cookie with its
> default settings, any
> attacker could completely take over your server by
> sending you
> carefully concoted cookies).  I'm not trying to be
> contentious here,
> just mentioning a couple further cases of where
> problems aren't
> visible from far away but are there when you look
> close.
> 
> > ???: Brian Beck <exogen at gmail.com>
> ???: python-list at python.org
> ??: Fri, 20 May 2005 16:14:17 -0400
> ??: Re: appending key-value pairs to a dict
> 
> rbt wrote:
> > I know how to setup an empty list and loop thru
> something... appending 
> > to the list on each loop... how does this work
> with dicts?
> > 
> > I'm looping thru a list of files and I want to put
> the file's name and 
> > its sha hash into a dict on each loop.
> 
> Like so:
> 
> d = {}
> for filename in files:
>      d[sha_func(filename)] = filename
> 
> 
> Or like so:
> 
> d = dict([(sha_func(filename), filename) for
> filename in files])
> 
> --
> Brian Beck
> Adventurer of the First Order
> 
> > ???: Skip Montanaro <skip at pobox.com>
> ??: python-list at python.org
> ???: Steve Holden <steve at holdenweb.com>
> ??: Fri, 20 May 2005 15:16:49 -0500
> ??: Re: Comparing 2 similar strings?
> 
> 
>     Steve> (is this the same as 'Conchobar'?)
> 
> No, that's a trendy pub in Key West...
> 
> <wink>
> 
> Skip
> 
> > ???: Paul Rubin <http://phr.cx at NOSPAM.invalid>
> ???: python-list at python.org
> ??: 20 May 2005 13:15:48 -0700
> ??: Re: Is Python suitable for a huge, enterprise
> size app?
> 
> "Fredrik Lundh" <fredrik at pythonware.com> writes:
> > this has been reported before, and it won't get
> fixed (unless you're
> > volunteering to add Python-compatible garbage
> collection to Tk, that is).
> 
> Yeah, I think I understand what the issue is.  I can
> think of some
> kludgy possible fixes but I assume they've been
> thought about already
> and rejected.  The workaround of making the
> application save an extra
> reference isn't too bad, but all relevant docs that
> say anything about
> these images should mention the requirement
> emphatically.
> 
> > ???: "ashtonn at gmail.com" <doodle4 at gmail.com>
> ???: python-list at python.org
> ??: 20 May 2005 13:18:33 -0700
> ??: Re: buffer_info error
> 
> i am filling in a packet with source and destination
> address and using
> the buffer_info call to pass on the address to an
> underlying low level
> call.
> 
> The src and dest are strings, but buffer_info
> expects an array. How do
> i deal with this?
> 
> 
> > ???: James Stroud <jstroud at mbi.ucla.edu>
> ???: python-list at python.org
> ??: Fri, 20 May 2005 13:20:48 -0700
> ??: Re: appending key-value pairs to a dict
> 
> On Friday 20 May 2005 01:04 pm, rbt wrote:
> > I know how to setup an empty list and loop thru
> something... appending
> > to the list on each loop... how does this work
> with dicts?
> >
> > I'm looping thru a list of files and I want to put
> the file's name and
> > its sha hash into a dict on each loop.
> >
> > Many thanks,
> >
> > rbt
> 
> Simple assignment.
> 
> adict[filename] = an_sha_hash
> 
> 
> 
> -- 
> James Stroud
> UCLA-DOE Institute for Genomics and Proteomics
> Box 951570
> Los Angeles, CA 90095
> 
> http://www.jamesstroud.com/
> 
> > ???: Vijay Kumar <getvijay at gmail.com>
> ??: vsuryade at cs.nmsu.edu
> ???: python-list at python.org
> ??: Fri, 20 May 2005 14:21:33 -0600
> ??: From the call hook, how do I know more
> precisely what is called?
> 
> Hi,
> 
> I wrote a trace function using the profiling and
> tracing hooks
> provided by the python interpreter.
> 
> The Python interpreter reports the calls occuring in
> the source
> program to my trace function.
> 
> How can I know whether the call happened is a
> function call or method
> call and if it is a method call what is its self
> object and/or  class
> is?.
> 
> I receive a frame object from the interpreter for
> every call. 
> 
> Thanks,
> Vijay.
> 
> > ???: Lee Harr <lee at example.com>
> ???: python-list at python.org
> ??: Fri, 20 May 2005 20:38:45 GMT
> ??: Re: PyGame and Rotozoom (Sorry if OT)
> 
> On 2005-05-20, J. W. McCall <jmccall at houston.rr.com>
> wrote:
> > I'm not sure if this is off-topic, since it
> doesn't deal with Python 
> > itself, but here goes:
> >
> > I'm messing around with writing a simple "game"
> where the player (a 
> > crudely drawn smiley face) moves by rotating and
> moving back or forward 
> > (think Resident Evil, but from an always-above
> view).  After much 
> > hacking, I have it working where left and right
> rotate the player sprite 
> > and up always moves the sprite whichever direction
> it's facing, while 
> > down is reverse.  I'm using
> pygame.transform.RotoZoom().
> >
> > My problem is that it doesn't rotate smoothly. 
> When it rotates, the 
> > corners of the image (just a plain white
> background) look like they're 
> > hitting some barrier and making it move around. 
> Think of an empty box 
> > turned diagonally (so that it looks like a
> diamond, with its open end 
> > facing you), and a cube in that box being turned
> while it's resting in 
> > the bottom corner.  I want it to rotate smoothly
> around its center, it's 
> > it's not doing that.
> >
> > I'm guessing that it has something to do with me
> not setting up a Rect 
> > right, but I'm not sure.  Maybe this is a
> limitation of Rotozoom/Rotate?
> >
> > Any advice would be greatly appreciated.  And yes,
> I'm a rank PyGame newbie.
> >
> 
> 
> 
> You might want to try pygsear:
> http://www.nongnu.org/pygsear/
> 
> It has a RotatedImage class which takes care of
> rotating
> things for you. See the examples roti.py and
> wings.py
> for some use of rotated image sprites.
> 
> > ???: Jp Calderone <exarkun at divmod.com>
> ???: python-list at python.org
> ??: Fri, 20 May 2005 20:45:00 GMT
> ??: Re: buffer_info error
> 
> On 20 May 2005 13:18:33 -0700, "ashtonn at gmail.com"
> <doodle4 at gmail.com> wrote:
> >i am filling in a packet with source and
> destination address and using
> >the buffer_info call to pass on the address to an
> underlying low level
> >call.
> >
> >The src and dest are strings, but buffer_info
> expects an array. How do
> >i deal with this?
> 
>   What's the low-level call you're invoking?
> 
>   Jp
> 
> > ???: roy at panix.com (Roy Smith)
> ???: python-list at python.org
> ??: 20 May 2005 16:50:39 -0400
> ??: Re: appending key-value pairs to a dict
> 
> rbt  <rbt at athop1.ath.vt.edu> wrote:
> >I know how to setup an empty list and loop thru
> something... appending 
> >to the list on each loop... how does this work with
> dicts?
> >
> >I'm looping thru a list of files and I want to put
> the file's name and 
> >its sha hash into a dict on each loop.
> 
> You just assign values to keys.  If the key doesn't
> exist, it's
> created automagically.  You want something like
> this:
> 
> shaDict = {}
> for fileName in fileNameList:
>     hash = generateShaHash (fileName)
>     shaDict[hash] = fileName
> 
> > ???: Dave Brueck <dave at pythonapocrypha.com>
> ???: python-list at python.org
> ??: Fri, 20 May 2005 15:07:05 -0600
> ??: Re: Is Python suitable for a huge, enterprise
> size app?
> 
> Paul Rubin wrote:
> > Dave Brueck <dave at pythonapocrypha.com> writes:
> > 
> >>One thing from your experience that did resonate
> with me is that,
> >>except for ftplib and occasionally urllib (for
> basic, one-shot GETs),
> >>we don't use any of the standard library's
> "protocol" modules - partly
> >>because we had to implement our own HTTP libraries
> for performance and
> >>scalability reasons anyway, and partly because we
> had trouble figuring
> >>out e.g. all the ins and outs of
> urllib/urllib2/httplib.
> > 
> > 
> > What do you use for HTTPS?
> 
> Hi Paul,
> 
> m2crypto (plus some patches to make asynchronous SSL
> do what we needed).
> 
> > And did you use the Cookie module in your
> > HTTP servers?  You may have had problems without
> even being aware of
> > them (until recently if you used Cookie with its
> default settings, any
> > attacker could completely take over your server by
> sending you
> > carefully concoted cookies).
> 
> Are you referring to the use of pickle for cookie
> serialization? In any case, we 
> didn't use Cookie.py from the stdlib (on the
> servers, nearly everything related 
> to URLs & HTTP was custom-built, with the exception
> of urlparse, for the 
> aforemenioned reasons).
> 
> -Dave
> 
> > ???: John Abel <johnfabel at btinternet.com>
> ??: python-list at python.org
> ??: Fri, 20 May 2005 22:24:14 +0100
> ??: Re: Process monitoring
> 
> gsteff wrote:
> 
> >Hey, I'm working on a Python program that will
> launch some other
> >non-Python process using os.spawn (in the
> os.P_NOWAIT mode) and then
> >basically wait for it to finish (while doing some
> other stuff in the
> >interim).  Normally, the new process will signal
> that it's done by
> >writing to a file, but I'd like to also find out if
> the new process
> >died unexpectedly.  Anyone know any preferrable
> ways to do this?
> >
> >Greg Steffensen
> >
> >  
> >
> If you're using 2.4, have a look at the subprocess
> module.
> 
> J
> 
> > -- 
> http://mail.python.org/mailman/listinfo/python-list
I am a beginner,Can you introduce some book about
python? I am a student of china

_________________________________________________________
Do You Yahoo!?
150??MP3????????????
http://cn.rd.yahoo.com/mail_cn/tag/yisou/music/*http://music.yisou.com/
???????????????????
http://cn.rd.yahoo.com/mail_cn/tag/yisou/image/*http://image.yisou.com
1G??1000???????????
http://cn.rd.yahoo.com/mail_cn/tag/1g/*http://cn.mail.yahoo.com/event/mail_1g/


From dalke at dalkescientific.com  Thu May 12 22:30:39 2005
From: dalke at dalkescientific.com (Andrew Dalke)
Date: Fri, 13 May 2005 02:30:39 GMT
Subject: Python features
References: <1115536911.106882.166230@z14g2000cwz.googlegroups.com>
	<mailman.162.1115539371.29826.python-list@python.org>
	<op.sqofc51np2c5o9@hector.domek>
Message-ID: <pan.2005.05.13.02.30.39.160177@dalkescientific.com>

Peter Dembinski wrote:
> If you want to redirect me to Google, don't bother.  IMO ninety percent
> of writings found on WWW is just a garbage.

Sturgeon's law: Ninety percent of everything is crap. 


				Andrew
				dalke at dalkescientific.com



From terjeja at gmail.com  Wed May  4 06:49:14 2005
From: terjeja at gmail.com (Terje Johan Abrahamsen)
Date: 4 May 2005 03:49:14 -0700
Subject: Regular Expression tools?
In-Reply-To: <mailman.135.1115173581.6583.python-list@python.org>
References: <mailman.135.1115173581.6583.python-list@python.org>
Message-ID: <1115203754.733947.143240@z14g2000cwz.googlegroups.com>

This is what you are looking for. 
http://kodos.sourceforge.net/



From tim.peters at gmail.com  Fri May 27 01:22:37 2005
From: tim.peters at gmail.com (Tim Peters)
Date: Fri, 27 May 2005 01:22:37 -0400
Subject: Python Challenge 10?
In-Reply-To: <3fnnn7F8eo6gU1@individual.net>
References: <d4u60o$akh$1@news2.netvision.net.il>
	<3dg5isF6qe1nhU1@news.dfncis.de> <d4v1an$j7q$1@sea.gmane.org>
	<1f7befae05043000165448b8d@mail.gmail.com>
	<mailman.55.1114846630.14961.python-list@python.org>
	<Pine.SOL.4.33.0505031353330.17143-100000@innovate>
	<1f7befae05050313286dd4a254@mail.gmail.com> <874qdjc2lb.fsf@uwo.ca>
	<mailman.133.1115166849.6583.python-list@python.org>
	<3fnnn7F8eo6gU1@individual.net>
Message-ID: <1f7befae05052622222eecb0b3@mail.gmail.com>

[Greg Ewing]
> Can someone give me a hint for No. 10? My MindBlaster
> card must be acting up -- I can't seem to tune into
> the author's brain waves on this one.

There are hints on the site; for level 10,

    http://www.pythonchallenge.com/forums/viewtopic.php?t=20

> I came up with what I thought was a perfectly good
> solution, but apparently it's wrong. :-(

The On-Line Encyclopedia of Integer Sequences should be better known
-- it's an amazing resource:

    http://www.research.att.com/~njas/sequences/

It knows about this sequence, so don't use it unless you want the
answer given to you.  If it doesn't know about your sequence,
"perfectly good" is debatable <wink>.


From mcaloney at cs.queensu.ca  Tue May  3 13:58:03 2005
From: mcaloney at cs.queensu.ca (Chris McAloney)
Date: Tue, 3 May 2005 13:58:03 -0400
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <mailman.55.1114846630.14961.python-list@python.org>
References: <d4u60o$akh$1@news2.netvision.net.il>
	<mailman.47.1114818531.14961.python-list@python.org>
	<3dg5isF6qe1nhU1@news.dfncis.de>
	<d4v1an$j7q$1@sea.gmane.org> <1f7befae05043000165448b8d@mail.gmail.com>
	<mailman.55.1114846630.14961.python-list@python.org>
Message-ID: <Pine.SOL.4.33.0505031353330.17143-100000@innovate>

Hi all,

Okay, so I've been working on level seven for a LONG time now.  I've
decoded the first message to get the hint for the next level.  Using the
same tactics, then I decode the hint as well, but there are non-printable
characters.  I've tried stripping out those characters, quoting them to
include in the URL and various anagrams of the printable characters, but
nothing works.  Does anybody have any suggestions?

Thanks,

-chris



From hello at spamm.er  Sun May  8 14:53:10 2005
From: hello at spamm.er (alex goldman)
Date: Sun, 08 May 2005 11:53:10 -0700
Subject: Language documentation ( was Re: Computing Industry shams)
References: <1115509201.680334.140840@f14g2000cwb.googlegroups.com>
	<874qdezh76.fsf@kafka.homenet>
Message-ID: <1415322.AzhuxSBQdk@yahoo.com>

vermicule wrote:

> 
> What is so hard to understand ?
> Should be perfectly clear even to a first year undergraduate.
> 
> As for "greedy" even a minimal exposure to Djikstra's shortest path
> algorithm would have made the concept intuitive. And from memory,
> that is the sort of thing done in Computing 101 and in  Data Structures
> and Algorithms 101
> 
> It seems to me that you want the Python doc to be written for morons.
> And that is not a valid complaint.

He's right actually. If we understand the term "greedy" as it's used in
graph search and optimization algorithms, Python's RE matching actually IS
greedy.



From k04jg02 at kzoo.edu  Tue May 10 16:06:33 2005
From: k04jg02 at kzoo.edu (Joseph Garvin)
Date: Tue, 10 May 2005 20:06:33 +0000
Subject: Python Args By Reference
In-Reply-To: <1115769308.136143.74080@f14g2000cwb.googlegroups.com>
References: <1115769308.136143.74080@f14g2000cwb.googlegroups.com>
Message-ID: <42811449.20706@kzoo.edu>

ncf wrote:

>Hello all, I was wondering if there was any way to pass arguments
>(integer and such) by reference (address of), rather than by value.
>
>Many thanks in advance.
>
>-Wes
>
>  
>

All mutable types in python are passed by reference automatically.


From theoryboy at my-deja.com  Mon May 23 08:39:36 2005
From: theoryboy at my-deja.com (Peter Saffrey)
Date: 23 May 2005 05:39:36 -0700
Subject: Multiple selections in Tix Hlist
In-Reply-To: <1116416447.877154.160280@g47g2000cwa.googlegroups.com>
References: <1116416447.877154.160280@g47g2000cwa.googlegroups.com>
Message-ID: <1116851976.808682.55420@g44g2000cwa.googlegroups.com>

To answer my own question:

HList(selectmode="extended")

does all the work for you.

Peter



From anuraguniyal at yahoo.com  Fri May 20 06:50:11 2005
From: anuraguniyal at yahoo.com (anuraguniyal at yahoo.com)
Date: 20 May 2005 03:50:11 -0700
Subject: string formatting quirk?
Message-ID: <1116586211.346424.272320@g14g2000cwa.googlegroups.com>

Hi,

''%([]) doesn't raise exception
but
''%('') does

Can anyone explain me why??

rgds
Anurag



From tlviewerSHRUB at yahooCHENEY.com  Sat May 14 13:38:23 2005
From: tlviewerSHRUB at yahooCHENEY.com (tlviewer)
Date: Sat, 14 May 2005 17:38:23 GMT
Subject: pygame on win32,  image.fromstring()
References: <bXdhe.215$h86.142@tornado.socal.rr.com>
	<AYhhe.379$X92.275@newsread2.news.pas.earthlink.net>
Message-ID: <jIqhe.15003$887.8989@tornado.socal.rr.com>


"Greg Krohn" <greg at invalid.invalid> wrote in message
news:AYhhe.379$X92.275 at newsread2.news.pas.earthlink.net...
> tlviewer wrote:
> > hello,
>
> hi
>
> > fp = open( "e:/batch/python/aceclub.bmp", "wt")
>
> wt? Should this be wb?
>
> > # gives: ValueError: String length does not equal format and resolution
size
> > img = gm.image.fromstring(str,(71,96),"P")
>
> The pygame docs say "P" is for 8bit pallete indices. When I look at the
> properties of aceclub.bmp, Windows says it's Bit Depth is 4. I'm not sure
if
> they're talking about the same thing, though. If so, you could probably
use PIL
> to convert the depth.

Yes, that was the trouble. Based on your suggestion, I now massage the
image string with PIL, then fromstring() works!

obj =Image.open(StringIO.StringIO(str))

#obj.convert( mode='P')
# conversion is implicit, mode is 'P' already
img = gm.image.fromstring(obj.tostring(),(71,96),"P")

Next I'm going to load all 53 card resources into a list (array) of strings,
then
write it out, pickled. That should smooth out loading the game when I use
4-6 decks (Blackjack-21).

thanks for getting to my post so quickly,
tlviewer
--




From rune.strand at gmail.com  Mon May  9 21:30:49 2005
From: rune.strand at gmail.com (Rune Strand)
Date: 9 May 2005 18:30:49 -0700
Subject: Unique Elements in a List
In-Reply-To: <d5p1u3$f53$1@panix3.panix.com>
References: <1115676903.432187.294910@z14g2000cwz.googlegroups.com>
	<1115678197.064079.28220@o13g2000cwo.googlegroups.com>
	<1115679662.521731.297510@f14g2000cwb.googlegroups.com>
	<d5p1u3$f53$1@panix3.panix.com>
Message-ID: <1115688649.553568.136190@z14g2000cwz.googlegroups.com>

You're right. I somehow missed the index part :-o. It's easy to fix
though.



From martin at v.loewis.de  Wed May 11 01:47:17 2005
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Wed, 11 May 2005 07:47:17 +0200
Subject: Trouble saving unicode text to file
In-Reply-To: <d5rien$c7i$1@news.island.liu.se>
References: <1115500976.571232.76100@z14g2000cwz.googlegroups.com>
	<ameq71lt3ohe3o85fsh4m456qgrnj82dfk@4ax.com>
	<d5ppl3$pto$1@news.island.liu.se>
	<a03281t2i1qngf2rnkgsdsq8nvou46nq00@4ax.com>
	<d5rien$c7i$1@news.island.liu.se>
Message-ID: <42819c66$0$29930$9b622d9e@news.freenet.de>

Thomas Bellman wrote:
> Fixed-with characters *do* have advantages, even in the external
> representation.  With fixed-with characters you don't have to
> parse the entire file or stream in order to read the Nth character;
> instead you can skip or seek to an octet position that can be
> calculated directly from N.

OTOH, encodings that are free of null bytes and ASCII compatible
also have advantages.

> And not the least, UTF-32 is *beautiful* compared to UTF-16.

But ugly compared to UTF-8. Not only does it have the null byte
and the ASCII incompatibility problem, but it also has the
endianness problem. So for exchanging Unicode between systems,
I can see no reason to use anything but UTF-8 (unless, of course,
one end, or the protocol, already dictates a different encoding).

Regards,
Martin


From mefjr75 at hotmail.com  Mon May  2 08:01:31 2005
From: mefjr75 at hotmail.com (M.E.Farmer)
Date: 2 May 2005 05:01:31 -0700
Subject: MRO problems with diamond inheritance?
In-Reply-To: <1115024383.848366.64190@z14g2000cwz.googlegroups.com>
References: <d53jqq$b88$1@newsg4.svr.pol.co.uk>
	<1114987828.055744.250090@z14g2000cwz.googlegroups.com>
	<1115004565.128735.58670@o13g2000cwo.googlegroups.com>
	<1115008163.017331.306290@o13g2000cwo.googlegroups.com>
	<1115024383.848366.64190@z14g2000cwz.googlegroups.com>
Message-ID: <1115034897.225080.313990@l41g2000cwc.googlegroups.com>

Michele Simionato wrote:
> M.E. Farmer:
>
> >You would be surprised how many answers you can squeeze out of that
> one
> >URL.
> >That whole page is worth a month of study( for me anyway ).
>
> One month only? You must be pretty smart, one could easily extract
> a book from that page ;)
No, I was being 'conservative'.
I am not as smart as the fellow that wrote that MRO paper ;)
Honestly, I have had that bookmarked for years...
There are some deep conceps on that page and I have not had a 'use
case' for most of them.
I would gladly welcome the book, you gonna write it!?
Something that covers ( with lots of 'real-life' examples ):
 classes ( I see a lot of questions on c.l.py about basic class use )
 special methods and class customization ( putting classes to work )
 metaclasses ( what they are and when you might need them )
 inheritance ( covering all flavors subclassing,mixin,etc.. )
 descriptors ( what are they and why you should care )
 types ( creating new ones, subclassing old ones, etc... )
 old style / newstyle gotchas for classes / metaclasses
 and maybe a few pages on decorators.

It is all well and good to have advanced OO in the language,
but it would be better if there was a 'reason' for it all.

> >I am still trying to grasp the 'purpose' of classmethods.
>
> In my personal opinion classmethods and staticmethods could (and
> possibly
> should) be removed from the language; a part for that consideration,
> the typical
> use for classmethods is as object factories, to provide alternative
> constructors.
>
>            Michele Simionato

Thank you, I had a feeling that it was just extra fluff.
But I felt/feel that way about list comprehensions and decorators too
;)  
M.E.Farmer



From lee_cullens at mac.com  Mon May  2 02:23:45 2005
From: lee_cullens at mac.com (Lee Cullens)
Date: Mon, 2 May 2005 02:23:45 -0400
Subject: MRO problems with diamond inheritance?
Message-ID: <a1b92b97642a0dc930a1c747ae488468@mac.com>

Michele Simionato:

>> M.E.Farmer:
>
>> Your answer lies somewhere in this page ;)
>> http://www.python.org/2.2.2/de?scrintro.html
>
> Yes, when it refers to
>
> http://www.python.org/2.3/mro.html
>
> (section Bad Method Resolution Orders).
>
> In short, it is a feature, not a bug.


I wanted to thank you Michele for for supplying this very informative 
link (and your work on the piece).

I'm just getting into Python and have been "lurking" on this list.  I 
have not yet gotten into a real world problem that involved nontrivial 
MRO, but recognized (as in intuitive suspicion) that such could be a 
concern in a complex class pattern design.  One of those things that 
keeps nagging when addressing other issues.  Now I can compartmentalize 
it and make better progress :~)

Thanks again,
Lee C



From mfranklin1 at gatwick.westerngeco.slb.com  Tue May 10 05:11:59 2005
From: mfranklin1 at gatwick.westerngeco.slb.com (Martin Franklin)
Date: Tue, 10 May 2005 10:11:59 +0100
Subject: Does TKinter Have A Grid ?
In-Reply-To: <pan.2005.05.10.08.49.16.621818@optushome.com.au>
References: <pan.2005.05.10.08.49.16.621818@optushome.com.au>
Message-ID: <d5ptf3$oas$1@sea.gmane.org>

Peter Moscatt wrote:
> Does TKinter have a Grid widget ?
> If not (as I assume), what is the alternative ?
> 
> Pete
> 

Pete,

If by grid you mean Table widget or Spreadsheet type widget then no Tk
does not have one (therefore nor does Tkinter)   However as luck would
have it there are a couple of extensions to Tk that provide a Table 
widget both Tk 'c' based and Tcl based.

for more about this (and lots of other useful stuff!)

http://tkinter.unpythonic.net/wiki/Widgets

It mentions two Table widgets, Tktable and tablelist both have python 
(tkinter) wrappers

Martin



From ivanlan at pauahtun.org  Wed May 11 16:28:15 2005
From: ivanlan at pauahtun.org (Ivan Van Laningham)
Date: Wed, 11 May 2005 14:28:15 -0600
Subject: Python Documentation (should be better?)
References: <5C99C308457E6D4EA5448EA52A66004A675A6E@or.mxim.com>
	<17026.26789.592527.975821@montanaro.dyndns.org>
Message-ID: <42826ADF.F0698EED@pauahtun.org>

Hi All--
The Python docs are not ideal.  I can never remember, for instance,
where to find string methods (not methods in the string module, but
methods with ''), but I can remember a tortured path to get me there
(yes, I know, fix my brain; easier said than done).  The module index is
good, if what you're looking for is in a module.  The tutorial is good.

I can usually end up where I want to be by picking up my copy of _Python
in a Nutshell_.  95% of the time I can find what I want in there or from
there.  The other 5% is too new, in the _Python Cookbook_ or in a
third-party module/lib.  Or it's what I'm trying to write;-)

Metta,
Ivan
----------------------------------------------
Ivan Van Laningham
God N Locomotive Works
http://www.andi-holmes.com/
http://www.foretec.com/python/workshops/1998-11/proceedings.html
Army Signal Corps:  Cu Chi, Class of '70
Author:  Teach Yourself Python in 24 Hours


From mchermside at ingdirect.com  Mon May 23 13:06:15 2005
From: mchermside at ingdirect.com (Chermside, Michael)
Date: Mon, 23 May 2005 13:06:15 -0400
Subject: line-by-line output from a subprocess
Message-ID: <0CFFADBB825C6249A26FDF11C1772AE10132A058@ingdexj1.ingdirect.com>

I am using the subprocess module to invoke a command-line utility and
process the output.

However, I would like to process the output line-by-line as it is
generated rather than
running the subprocess to completion and THEN processing the results.
So, for instance,
I'd like to write code like this:

    all_files = []
    import subprocess
    subp = subprocess.Popen('dir', stdout=subprocess.PIPE)
    for line in subp.stdout:
        sys.stdout.print(line)
        all_files.append(line)

...and have it print the lines to stdout one-by-one until the entire
list is
collected. (Pretend that 'dir' is VERY slow.)

The communicate() method in subprocess blocks until the subprocess has
exited... I'm sure there is some good reason for this behavior. But how
does
one achieve what I am trying to do?

(PS: this is on Windows... although I'd rather use an OS-agnostic
solution if
one exists.)

-- Michael Chermside






*****************************************************************************
This email may contain confidential or privileged information. If you believe
 you have received the message in error, please notify the sender and delete 
the message without copying or disclosing it.
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From volker_grabsch at v.notjusthosting.com  Sat May 14 06:09:14 2005
From: volker_grabsch at v.notjusthosting.com (Volker Grabsch)
Date: Sat, 14 May 2005 12:09:14 +0200
Subject: Multiple "cmp"s chained one after another
Message-ID: <d64io9$s6o$05$1@news.t-online.com>

Hello!

Ich just found a very nice 'pythonic' solution for an often appearing
problem. I didn't find it documented anywhere, so I'm posting it here.
If this isn't new in any way, I'd really like to get to know it.

Example problem:
I have some "datetime" objects and want to sort them, as here:

	birthdays = [d1,d2,d3,d4]
	birthdays.sort()

However, I don't want to sort them the default way. These are birthdays,
so only the month and day do matter, not the year. E.g.:

	2003-01-01  should be smaller than  1984-05-01

So I have to write the comparison on my own, e.g.

	def cmp_birthdays(d1,d2):
		if d1.month > d2.month: return 1
		if d1.month < d2.month: return -1
		if d1.day > d2.day: return 1
		if d1.day < d2.day: return -1
		return 0

	...
	birthdays.sort(cmp_birthdays)

This implementation of cmp_birthdays is very ugly. Image you want to
chain more than 2 values in that "cmp_birthdays". I also want to use the
builtin "cmp" function, not ">" and "<".

After thinking some minutes about it, I found a very nice solution:
I have some "cmp"s one aftter another. If one if them return 1 oder -1,
it sould be returned. If it returns 0, the next "cmp" is used. In other
words: I have a sequence of numbers, and want to get the first one that
is not 0. (or return 0, if all numbers were 0)

But this is exactly what the "or" operator does, due to short-circuit
evaluation. In this example, that means:

	def cmp_bithdays(d1,d2):
		return cmp(d1.month,d2.month) or cmp(d1.day,d2.day)

The generic pattern is:

		return cmp(...) or cmp (...) or cmp(...) or ...

I'm not sure whether this pattern is already a "common recipe", but
I found it to be a very nice idea. :-)

Any opinions?


Greets,

	Volker

-- 
Volker Grabsch
---<<(())>>---
\frac{\left|\vartheta_0\times\{\ell,\kappa\in\Re\}\right|}{\sqrt
[G]{-\Gamma(\alpha)\cdot\mathcal{B}^{\left[\oint\!c_\hbar\right]}}}


From enleverlesO.OmcO at OmclaveauO.com  Sun May 22 17:39:59 2005
From: enleverlesO.OmcO at OmclaveauO.com (Do Re Mi chel La Si Do)
Date: Sun, 22 May 2005 23:39:59 +0200
Subject: Self-modifying Code
References: <1116522647.227661.99290@g43g2000cwa.googlegroups.com>
	<428cedeb$0$25015$8fcfb975@news.wanadoo.fr>
	<pan.2005.05.22.08.01.37.760790@REMOVETHIScyber.com.au>
Message-ID: <4290fc6e$0$3129$8fcfb975@news.wanadoo.fr>

Hi !


I often use the auto-modification of code, to allow the users to adapt 
software to the evolution of their needs.

When this technique is controlled, and framed well, it presents only few 
problems.

AMHA, to speak about danger, it is the result of a lack of practice and 
tests. It is a little the same debate as: dynamic language versus static 
language.


@-salutations

Michel Claveau






From rkern at ucsd.edu  Sat May 14 22:19:08 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Sat, 14 May 2005 19:19:08 -0700
Subject: Modifying a built-in function for logging purposes
In-Reply-To: <1116108841.429602.257380@o13g2000cwo.googlegroups.com>
References: <1116098593.970438.219860@g47g2000cwa.googlegroups.com>	<Lcthe.1234$Ri4.1175@newsread1.news.pas.earthlink.net>
	<1116108841.429602.257380@o13g2000cwo.googlegroups.com>
Message-ID: <d66bih$bgc$1@sea.gmane.org>

qwweeeit at yahoo.it wrote:
> Hi Greg,
> thank for your replay, but I didn't succeed in any way. You must
> consider however that I'm not a Python "expert"...
> IMHO, it must be a script that change part of the interpreter, and
> substitute a new module (py) in the place of the standard one (py or
> pyc). The standard module must be saved in order to be able to undo the
> changes and go back to the normal behaviour.
> The problem is that I don't know if the built-in functions like open
> (or file) are written in Python or in C and, besides that, if they can
> be modified.

Short answer: if you don't know stuff like this, then you probably 
shouldn't mess around with the builtins in production code.

Depending on your operating system, there are probably programs that let 
you list all of the files that have been opened on your system. For 
example, on OS X, lsof(1) does the trick.

> Other solutions which modify the source to be logged, are not
> solutions, because it is far simpler to introduce here and there print
> statements... 

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From gtog at _no___spam_myrealbox.com  Thu May 12 10:58:16 2005
From: gtog at _no___spam_myrealbox.com (George)
Date: Thu, 12 May 2005 16:58:16 +0200
Subject: Launch file in Notepad
In-Reply-To: <1186phdog83fmf6@corp.supernews.com>
References: <42835db6$0$1334$5fc3050@dreader2.news.tiscali.nl>
	<mailman.462.1115906101.29826.python-list@python.org>
	<1186phdog83fmf6@corp.supernews.com>
Message-ID: <42836fc5$0$1366$5fc3050@dreader2.news.tiscali.nl>

Grant Edwards wrote:
 > On 2005-05-12, Brian van den Broek <bvande at po-box.mcgill.ca> wrote:

 > Does Python really look at the string and mess with the slash?
 > I don't think it needs to, since the Windows system calls have
 > always accepted forward slashses, haven't they?

It did, but now not anymore. I don't understand why, maybe I've changed 
something in the code. See my other post.

George


From andymac at bullseye.apana.org.au  Wed May 25 06:43:39 2005
From: andymac at bullseye.apana.org.au (Andrew MacIntyre)
Date: Wed, 25 May 2005 21:43:39 +1100
Subject: IRIX MipsPro compiler chokes on Python.h
In-Reply-To: <1116933601.457261@blaat.sara.nl>
References: <1116933601.457261@blaat.sara.nl>
Message-ID: <429456DB.6000105@bullseye.apana.org.au>

Bram Stolk wrote:
> Hi there,
> 
> I just built and installed Python-2.4.1 on my Irix machine.
> My compiler, the MipsPro compiler, chokes on the Python.h include file,
> as demonstrated here:
> 
> 
> $ CC -v
> MIPSpro Compilers: Version 7.41
> $ python -V
> Python 2.4.1
> $ cat l.cxx
> #include <Python.h>
> 
> int main()
> {
>    return 0;
> }
> 
> $ CC -I $HOME/include/python2.4 l.cxx
> cc-1311 CC: ERROR File = /usr/include/sys/time.h, Line = 186
>    The indicated linkage specification is incompatible with previous "select"
>            (declared at line 479 of "/usr/include/unistd.h").
> 
>    static int select(
>               ^
> 
> 1 error detected in the compilation of "l.cxx".
> 
> Has anyone experienced the same?
> How do I solve this?

My suspicion would be directed to a #define that is incorrect, as the
snippet above suggests that select() appears in two system headers
(/usr/include/sys/time.h & /usr/include/unistd.h).

That is ./configure got something wrong and may need to be modified for
your platform to sort this out properly, but modifying pyconfig.h to
correct the incorrect definitions should get you out of trouble.

-------------------------------------------------------------------------
Andrew I MacIntyre                     "These thoughts are mine alone..."
E-mail: andymac at bullseye.apana.org.au  (pref) | Snail: PO Box 370
        andymac at pcug.org.au             (alt) |        Belconnen ACT 2616
Web:    http://www.andymac.org/               |        Australia


From nitrogenycs at web.de  Thu May 12 04:51:01 2005
From: nitrogenycs at web.de (nitrogenycs at web.de)
Date: 12 May 2005 01:51:01 -0700
Subject: Proxy Design Advice Needed
In-Reply-To: <d5up2d$mqr$1@news6.zwoll1.ov.home.nl>
References: <1115848303.630570.147840@o13g2000cwo.googlegroups.com>
	<d5up2d$mqr$1@news6.zwoll1.ov.home.nl>
Message-ID: <1115887861.163456.77930@g49g2000cwa.googlegroups.com>

Thanks for the hint so far!
The recipe shown there does not exactly what I want though, it doesn't
do the type() stuff and it hooks up every _ variable which could get
crucial if the wrapped object's methods uses them too.

So I think my question boils down to how I can make type(Proxy) return
type(WrappedObject)?

Any hints?

-Matthias



From philippe at philippecmartin.com  Wed May  4 14:34:20 2005
From: philippe at philippecmartin.com (Philippe C. Martin)
Date: Wed, 04 May 2005 18:34:20 GMT
Subject: python+windows/linux -> write stdout text to always on top text?
References: <1115064842.454916.305970@f14g2000cwb.googlegroups.com>
Message-ID: <MA8ee.2208$Vz4.1220@newssvr11.news.prodigy.com>

I understand you wish to reroute stdout to some object than can write to a
window - correct ?

If so, this is what I do with tkinter ....


class SC_Log_Stdout:
#*******************************************************************************
  def __init__(self, p_log_text): 
    self.__m_log_text = p_log_text #graphics object - would be your game
engine I guess
#*******************************************************************************
   def write(self,p_string):
     try:
     

     except:
         pass

.
.
.
.
.
.
sys.stdout = SC_Log_Stdout(.....) #reroute stdout
.
.
.
#launch your game









flamesrock wrote:

> Hi,
> 
> I'm curious if theres a way in python to write stdout text to the
> screen (ie top right) the way they do in some FPS games, so that its
> always on top, in an invisible window of some set dimensions. No matter
> what program is on top.
> 
> Is there a way to make it cross platform?
> 
> I've looked but nothing seems to turn up on the subject.
> 
> -thanks in advance.



From rrr at ronadam.com  Wed May 18 15:35:24 2005
From: rrr at ronadam.com (Ron Adam)
Date: Wed, 18 May 2005 19:35:24 GMT
Subject: Sorting x lists based on one list ... maybe an example would
	make sense:
In-Reply-To: <_Nnie.1050$5Z1.166@newssvr30.news.prodigy.com>
References: <eonie.426$VB6.363@newssvr12.news.prodigy.com>
	<ssnie.428$VB6.184@newssvr12.news.prodigy.com>
	<d6d14l$5vj$00$1@news.t-online.com>
	<_Nnie.1050$5Z1.166@newssvr30.news.prodigy.com>
Message-ID: <0OMie.27565$VH2.6316@tornado.tampabay.rr.com>

Philippe C. Martin wrote:
>>Another way would be to merge the three lists into one of 3-tuples, sort,
>>and unmerge, similarly to the DSU pattern -- which raises the question:
>>why are you using three lists in the first place?
> 
> 
> :-) Thanks, the lists will evolve and are also stored in 'csv' format in
> external files at one point. I cannot use dictionaries because I need to
> control the sorting (hash).
> 
> In this specific case, list 1 represents students with their information,
> list 2 represents assignments with information such as weight, term, max
> grade ... and list 3 the actual grades.
> 
> Regards,
> 
> Philippe

Hi Philippe,

As Peter suggested this sounds like a database.  Especially if it will 
evolve and grow to the point where it will not all fit in memory.  Also 
data bases already have a lot of ability to query, and generate sorted 
reports built into them.

This is a fairly normal task for a relational data base where you have a 
transaction list, (grades), that are connected to other lists, 
(students, and assignments).  This saves a lot of space by not 
duplicating the student information and assignment information for each 
grade given.  It also makes updating student information easier because 
it only needs to be updated once, and not changed everwhere it's referenced.

If your lists are not going to grow larger than what will fit in memory, 
you can use dictionaries and lists.  Loosely like the following...

- Read student info from cvs file into dictionary using student_id or 
number as a key. Names can be used if they are unique.  The content of 
each student file will be a list, with None for missing items.

     students[student_id] = (name, address, phone, etc....)

- Read assignments into dictionary using an assignment_no as key.

     assignments[assignment_no] = (a_name, description, etc...)

- Create a grades list which will contain grade tuples:
	
     [(date,student_id,assignment_no,grade), ... more grades ... ]


You can sort your grades list however you want. If you want to sort by 
student name instead of student_id, you would use:

     # Sort grades list by student name.
     grades.sort(lambda x,y: cmp(students[x[1]][0], students[y[1]][0]))

Assuming the name is in the first field in the student dictionary-value 
tuple.  There are probably other ways to do this that are more readable 
or faster.

The grade list could also be filtered, so if you want to get all the 
grades for a specific student, or all the grades for a particular 
assignment you can just loop through grades list and print what you want.

An alternative query would be to get all the students who have not 
completed an assignment:  Get a list of all the student who have a grade 
for the assignment, then use that to get a list from the student 
dictionary, who are not in the students_completed_assignment list.

Anyway, just trying to give you some ideas.

Cheers,
_Ron


From rrr at ronadam.com  Sun May 15 11:12:12 2005
From: rrr at ronadam.com (Ron Adam)
Date: Sun, 15 May 2005 11:12:12 -0400
Subject: Exception question
In-Reply-To: <wcSdnXpkc7hRSRvfRVn-pg@comcast.com>
References: <mailman.6.1116126375.15315.python-list@python.org>
	<wcSdnXpkc7hRSRvfRVn-pg@comcast.com>
Message-ID: <428766CC.30503@ronadam.com>

Steven Bethard wrote:
> Ron Adam wrote:
> 
>>Do exceptions that take place get stored in a stack or list someplace?
> 
> [snip]
> 
>>I know I can catch the error and store it myself with,
>>
>>    except Exception, exc:
>>
>>or possibly,
>>
>>    errlist = []
>>    errlist.append(sys.exc_info())
>>
>>But what I want to know is does the interpreter do that in any way?  And 
>>if so, can I access it?
> 
> 
> No, but there's been some recent talk about having it do so:
> 
> http://mail.python.org/pipermail/python-dev/2005-May/053672.html
> 
> If that happens though, it's not likely to show up before Python 3.0. 
> Too backwards incompatible to do now.  It also seems that the exact 
> semantics haven't yet been agreed upon.
> 
> STeVe

Thanks Steve,

I had actually skimmed over those, but wasn't thinking of this at the 
time. I reread them.  And it clears up a few things.

I had read somewhere that exception objects were global, but that wasn't 
correct, after testing it, they appear to be part of the local frame. 
So once a function exits, any exceptions objects that happened inside 
the function are no longer retrievable.

And checking exception ID's to see if any new exceptions occurred 
doesn't work either, as the numbers get reused too frequently in a short 
period.

Conclusion: Exceptions need to be logged or handled as they occur.

Cheers,
_Ron


From martin at v.loewis.de  Sat May  7 12:40:08 2005
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Sat, 07 May 2005 18:40:08 +0200
Subject: Q: The `print' statement over Unicode
In-Reply-To: <mailman.146.1115482306.29826.python-list@python.org>
References: <mailman.6.1115221576.29826.python-list@python.org>	<acnbm18i.fsf@python.net>	<mailman.135.1115467276.29826.python-list@python.org>	<427cc8b2$0$26179$9b622d9e@news.freenet.de>
	<mailman.146.1115482306.29826.python-list@python.org>
Message-ID: <427CEF68.1040607@v.loewis.de>

Fran?ois Pinard wrote:
> My contributions are not that welcome.  If they were, the core team
> would not try forcing me into using robots and bug trackers! :-)

Ok, then we need to wait for somebody else to contribute a documentation
patch.

> Thanks.  Your kind explanation, above, should make it, as is, somewhere
> in the documentation

But how will that happen? Unless somebody contributes a documentation
patch, the documentation will not change magically!

Regards,
Martin


From doodle4 at gmail.com  Mon May 16 15:56:37 2005
From: doodle4 at gmail.com (ashtonn@gmail.com)
Date: 16 May 2005 12:56:37 -0700
Subject: optparse global
References: <1116264761.204065.15980@g14g2000cwa.googlegroups.com>
	<mailman.52.1116265519.8733.python-list@python.org>
Message-ID: <1116273397.597407.256760@g49g2000cwa.googlegroups.com>

This does not seem to work. I still get the default value 5007 when i
run
$python txd.py - p5006
$python testme.py

***txd.py***

global options
parser = OptionParser()
parser.add_option("-p", "--port", dest="port", default=5007,
                      type="int",
                      help="port to connect to for remote interpreter")

options, args = parser.parse_args()

**testme.py**
from txd import options

print options.port

-Ashton



From ojokimu at yahoo.co.uk  Sun May  1 22:50:47 2005
From: ojokimu at yahoo.co.uk (John Ridley)
Date: Mon, 2 May 2005 03:50:47 +0100 (BST)
Subject: gtk/qt scintilla help !
Message-ID: <20050502025047.33234.qmail@web26810.mail.ukl.yahoo.com>

fabien wrote on Sun, 01 May 2005 05:40:05 -0700:

> Hi,

Hello Fabien

> I am writing a POV-RAY editor with Python using
> either QT or GTK as GUI 'wrapper'. ( I am still trying both )
>
> [snip]
>
> I have also downloaded qscintilla-1.62-gpl-1.5.1.
> As for GTK, I also found the LexPOV.cpp file, with
> no POV keywords in it and with no POV keywords in
> any of the file in the package.
> The compilation builds then move the library
> libqscintilla.so to /usr/lib/qt3/lib.
> 
> How do I link the newly built library to the folling qt script :
>
> [snip]

QScintilla is a port to Qt of the Scintilla editor control, and PyQt
provides the python bindings for it. Scintilla has several dozen lexers
(including one for POV), and QScintilla currently provides class
wrappers for a small selection of them - but not POV, as you will see
from the documentation:

http://www.river-bank.demon.co.uk/docs/qscintilla/hierarchy.html

Given this, there are two routes you can go down. You could ask the
developer of QScintilla to provide support for POV by making a request
via the mailing list:

http://www.riverbankcomputing.co.uk/pyqt/mailinglist.php

Or you could write your own POV lexer class in python using the
existing QScintilla APIs. This is not particularly difficult, but it
does take some working out. As you already know, a list of POV keywords
is required. You will then need to look at the source (LexPOV.cpp and
SciLexer.h) to see how the keywords are used and how the lexical states
tie up with the SCE_POV enum. QScintilla's lexer classes are mainly
wrappers around this information, so once you've worked it out, writing
a python class based on QextScintillaLexer is fairly straightforward:

>>> class LexerPOV(QextScintillaLexer):
>>>     def __init__(self, parent, name):
>>>         QextScintillaLexer.__init__(self, parent, name)
>>>     def lexer(self):
>>>         return "pov"
>>>     def color(self, style):
>>>         # styles map to (SCE_POV enum)
>>>         # return your own QColor
>>>         # or return the base class default
>>>         return QextScintillaLexer.color(self, style)
>>>     def keywords(self, set):
>>>         # if set == 0:
>>>         #     return <pov keywords>
>>>         # elif ...
>>>         return 0
>>>     def description(self, style):
>>>         # if style == 0:
>>>         #     return self.tr("Default")
>>>         # elif ...
>>>         return QString.null

Of course, this is a minimal lexer class - it is possible to be a lot
more sophisticated than what is suggested here.


John Ridley

Send instant messages to your online friends http://uk.messenger.yahoo.com 


From timr at probo.com  Fri May 27 00:08:27 2005
From: timr at probo.com (Tim Roberts)
Date: Thu, 26 May 2005 21:08:27 -0700
Subject: Trouble with regexes
References: <qu79919l7bfslbujq20km6diqr6uo2nd04@4ax.com>
Message-ID: <b77d91tg0b1f17m13qqbo1ji5n1158c5d3@4ax.com>

Fernando Rodriguez <frr at THOU_SHALL_NOT_SPAMeasyjob.net> wrote:
>
>I'm trying to write a regex that matches a \r char if and only if it
>is not followed by a \n (I want to translate text files from unix
>newlines to windows\dos).
>
>I tried this, but it doesn't work:
>p = re.compile(r'(\r)[^\n]', re.IGNORECASE)
>
>it still matches a string such as r'\r\n'

Hint: the string r'\r\n' contains four characters.  It contains neither
carriage return nor newline.

Bigger hint: the string '\r\n' contains two characters.
-- 
- Tim Roberts, timr at probo.com
  Providenza & Boekelheide, Inc.


From kbk at shore.net  Wed May 18 00:12:36 2005
From: kbk at shore.net (Kurt B. Kaiser)
Date: Wed, 18 May 2005 00:12:36 -0400 (EDT)
Subject: Weekly Python Patch/Bug Summary
Message-ID: <200505180412.j4I4CaB1028858@bayview.thirdcreek.com>

Patch / Bug Summary
___________________

Patches :  339 open ( +7) /  2838 closed ( +4) /  3177 total (+11)
Bugs    :  938 open (+11) /  4962 closed ( +3) /  5900 total (+14)
RFE     :  187 open ( +1) /   157 closed ( +0) /   344 total ( +1)

New / Reopened Patches
______________________

Restore GC support to set objects  (2005-05-11)
       http://python.org/sf/1200018  opened by  Barry A. Warsaw

idlelib patch  (2005-05-11)
       http://python.org/sf/1200038  opened by  sowjanya

Small optimization for PyDict_Merge()  (2005-05-11)
CLOSED http://python.org/sf/1200051  opened by  Barry A. Warsaw

buffer overflow in _cursesmodule.c  (2005-05-11)
       http://python.org/sf/1200134  opened by  Jan Michael H?lsbergen

patch IDLE to allow running anonymous code in editor window  (2005-05-13)
       http://python.org/sf/1201522  opened by  Jeff Shute

allow running multiple instances of IDLE  (2005-05-13)
       http://python.org/sf/1201569  opened by  Jeff Shute

httplib mentions getreply instead of getresponse  (2005-05-16)
       http://python.org/sf/1203094  opened by  Robert Brewer

workaround deprecated ostat structure in <sys/stat.h>  (2005-05-17)
       http://python.org/sf/1203329  opened by  J. J. Snitow

Patch for [ 1163563 ] Sub threads execute in restricted mode  (2005-05-17)
       http://python.org/sf/1203393  opened by  anothermax

Allow larger programs to be frozen under Win32  (2005-05-17)
       http://python.org/sf/1203650  opened by  Gottfried Gan?auge

Patches Closed
______________

Small optimization for PyDict_Merge()  (2005-05-11)
       http://python.org/sf/1200051  closed by  rhettinger

better datetime support for xmlrpclib  (2005-02-10)
       http://python.org/sf/1120353  closed by  montanaro

Add O_SHLOCK/O_EXLOCK to posix  (2005-01-17)
       http://python.org/sf/1103951  closed by  montanaro

Fix _tryorder in webbrowser.py  (2005-03-20)
       http://python.org/sf/1166780  closed by  rodsenra

New / Reopened Bugs
___________________

installation problem with python 2.4.1 on Win2k system  (2005-05-11)
       http://python.org/sf/1199808  opened by  mmkobayashi

Python 2.4.1 Installer ended prematurely  (2005-05-11)
       http://python.org/sf/1199947  opened by  Wai Yip Tung

time module ignores timezone changes  (2005-05-09)
CLOSED http://python.org/sf/1198275  reopened by  bcannon

Windows msi installer fails on virtual drives  (2005-05-11)
       http://python.org/sf/1200287  opened by  bartgrantham

SyntaxError raised on win32 for correct files  (2005-05-12)
       http://python.org/sf/1200686  opened by  Federico Di Gregorio

Wrong word on "raise" page  (2005-05-13)
CLOSED http://python.org/sf/1201438  opened by  Erik Rose

Problem with recursion in dict (crash with core dump)  (2005-05-13)
       http://python.org/sf/1201456  opened by  Vladimir Yu. Stepanov

suspected cPickle memory leak   (2005-05-13)
       http://python.org/sf/1201461  opened by  Alan

Glossary listing bug  (2005-05-14)
CLOSED http://python.org/sf/1201807  opened by  George Yoshida

mimetypes.py does not find mime.types on Mac OS X  (2005-05-14)
       http://python.org/sf/1202018  opened by  Stefan H. Holek

Description of string.lstrip() needs improvement  (2005-05-15)
       http://python.org/sf/1202395  opened by  Roy Smith

httplib docs mentioning HTTPConnection.getreply  (2005-05-15)
       http://python.org/sf/1202475  opened by  Georg Brandl

RE parser too loose with {m,n} construct  (2005-05-15)
       http://python.org/sf/1202493  opened by  Skip Montanaro

a bunch of infinite C recursions  (2005-05-15)
       http://python.org/sf/1202533  opened by  Armin Rigo

Problem with abs function  (2005-05-16)
       http://python.org/sf/1202946  opened by  ric-b

Bugs Closed
___________

time module ignores timezone changes  (2005-05-09)
       http://python.org/sf/1198275  closed by  bcannon

SystemError: error return without exception set  (2005-05-05)
       http://python.org/sf/1195984  closed by  nbajpai

Wrong word on "raise" page  (2005-05-13)
       http://python.org/sf/1201438  closed by  rhettinger

Glossary listing bug  (2005-05-14)
       http://python.org/sf/1201807  closed by  rhettinger

New / Reopened RFE
__________________

enhancing os.chown functionality  (2005-05-12)
       http://python.org/sf/1200804  opened by  gyrof



From fredrik at pythonware.com  Tue May 17 02:38:14 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 17 May 2005 08:38:14 +0200
Subject: ElemenTree and namespaces
References: <d6an8t$554$1@vegh.ks.cc.utah.edu>
	<1116272957.323777.79090@g44g2000cwa.googlegroups.com>
Message-ID: <d6c3fp$htu$1@sea.gmane.org>

oren.tirosh at gmail.com wrote:

> In theory, namespace prefixes are entirely arbitrary and only serve as
> a temporary link to the namespace URI. In practice, people tend to get
> emotionally attached to their favorite prefixes. XPath also breaks this
> theory because it refers to prefixes rather than URIs.

if your XPath processor requires you to use the same namespace
prefixes in the XPath expression as you're using in the document,
that processor is broken.

(XPath processors that can only work on expressions embedded
in XML documents may be an exception to that rule; they can get
the prefix/URI mapping from the execution context)

</F>





From cam.ac.uk at mh391.invalid  Sun May  1 19:26:18 2005
From: cam.ac.uk at mh391.invalid (Michael Hoffman)
Date: Mon, 02 May 2005 00:26:18 +0100
Subject: Best way to create temporary file?
In-Reply-To: <246a4e07.0505010034.28055fd@posting.google.com>
References: <246a4e07.0504290311.7d692401@posting.google.com>
	<p%pce.71049$IN.1224311@twister2.libero.it>
	<246a4e07.0505010034.28055fd@posting.google.com>
Message-ID: <d53oj0$8en$1@gemini.csx.cam.ac.uk>

Frank Millman wrote:

> It is certainly possible to store the entire report in memory, using a
> two-dimensional list (page/line), but if a report runs into hundreds of
> pages, I am concerned at the amount of memory this would require.
> Perhaps I am being old-fashioned - with todays memory of at least 64k,
> it would probably fit without a problem - but I would prefer to write
> the pages away and read them back when needed.

Modern operating systems have a technique for dealing with this. It is 
called virtual memory. You are only using up more memory, CPU, and disk 
speed by using temporary files unnecessarily.
-- 
Michael Hoffman


From ccurvey at gmail.com  Wed May 11 09:37:33 2005
From: ccurvey at gmail.com (Chris Curvey)
Date: 11 May 2005 06:37:33 -0700
Subject: FutureWarning in win32com?
Message-ID: <1115818653.882851.316090@z14g2000cwz.googlegroups.com>

Hi all,

When trying to automate IE thru win32com (using PAMIE), I'm getting
this message out

C:\Program Files\Plone
2\Python\lib\site-packages\win32com\client\dynamic.py:463
: FutureWarning: %u/%o/%x/%X of negative int will return a signed
string in Pyth
on 2.4 and up
  debug_attr_print("Getting property Id 0x%x from OLE object" %
retEntry.dispid)

The underlying code works fine (the browser ends up where it's supposed
to), but this warning seems to be actually sent to stdout or stderr --
it's not a raised exception that I can catch.

How can I suppress this message?



From xah at xahlee.org  Thu May 12 22:32:56 2005
From: xah at xahlee.org (Xah Lee)
Date: 12 May 2005 19:32:56 -0700
Subject: [perl-python] Range function
Message-ID: <1115951576.138445.51080@z14g2000cwz.googlegroups.com>

Today we'll be writing a function called Range. The Perl documentation
is as follows.

Perl & Python & Java Solutions will be posted in 48 hours.

This is Perl-Python a-day. See
http://xahlee.org/web/perl-python/python.html

  Xah
  xah at xahlee.org
? http://xahlee.org/

--------------------------

Range

     Range($iMax) generates the list [1, 2, ... , $iMax].

     Range($iMin, $iMax) generates the list [$iMin, ... , $iMax].

     Range($iMin, $iMax, $iStep) uses increment $iStep, with the last
element
     in the result being less or equal to $iMax. $iStep cannot be 0. If
     $iStep is negative, then the role of $iMin and $iMax are reversed.

     If Range fails, 0 is returned.

     Example:

      Range(5); # returns [1,2,3,4,5]

      Range(5,10); # returns [5,6,7,8,9,10]

      Range( 5, 7, 0.3); # returns [5, 5.3, 5.6, 5.9, 6.2, 6.5, 6.8]

      Range( 5, -4, -2); # returns [5,3,1,-1,-3]



From jjl at pobox.com  Sun May 29 18:12:05 2005
From: jjl at pobox.com (John J. Lee)
Date: 29 May 2005 22:12:05 +0000
Subject: Help with choice of suitable Architecture
References: <1117299643.380598.5540@g47g2000cwa.googlegroups.com>
Message-ID: <87mzqdr8ay.fsf@pobox.com>

"Rob Cowie" <cowie.rob at gmail.com> writes:

> Thanks for the comments.
> 
> I kind of get the impression that CGI is the way to go for this
> application, and that I should forget about adding client-side
> scripting based functionality for the sake of accessibility - which I
> understand and kind of agree with.

I don't see any intrinsic reason for client-side scripting, or
JavaScript in particular, messing up accessibility.  One can fall back
to vanilla HTML+CSS for people who don't have JS turned on.  I don't
say it's easy, though.  I don't know what you intend the content of
your Masters to be, but this seems like an interesting and useful
thing to work on, and a fashionable topic to boot: write your app as
one piece of code that can run happily with JavaScript (and taking
advantage of AJAX) or without (without resort to if statements in your
application code, obviously ;-).

Personally, I'm anticipating the day I can change an import statement
in my Qt GUI applications and run them on the web (== JavaScript +
HTML + CSS + HTTP) <0.5 wink>.

In the mean time, I recommend Quixote (yes, you can run it on CGI).
Lots of people seem to like Twisted, too (nevow has some AJAX
support), though perhaps Twisted and CGI don't sensibly go together
(and I certainly understand the desire to avoid long-running server
processes).

If you're interested in new stuff, certainly take a look at Kamaelia
(after you've oriented yourself a bit by writing a tiny web app or
two!).


> I'll look into the problem of concurrent access to an XML file. I may
> get back to the group about this!

>From my own unpleasant experience, CGI + locking = pain.  At least if
you don't have full control of the server (even then, do yourself a
favour, use a DBMS, and let somebody else worry about some of the hard
parts of locking, transactions &c.).  Why not keep the XML in a
database blob, if somebody insists on an XML-based implementation?
Or, more sane, store your data in the DB, then just write out XML,
which presumably solves the *real* problem for which XML is the
solution (interoperability)?

have-the-appropriate-amount-of-fun-ly y'rs,


John


From hello at spamm.er  Tue May 24 01:34:46 2005
From: hello at spamm.er (alex goldman)
Date: Mon, 23 May 2005 22:34:46 -0700
Subject: What are OOP's Jargons and Complexities?
References: <1116843761.619249.144790@g47g2000cwa.googlegroups.com>
	<bAske.14563$yx.14338@fe08.lga>
Message-ID: <1779523.9sBn8HKUcY@yahoo.com>

John W. Kennedy wrote:

> Strong
> typing has been a feature of mainstream programming languages since the
> late 1950's.

Is Fortran a strongly typed language? I don't think so. Strong typing has
been invented in the 70's, if I'm not mistaken, when ML was invented, but
strong typing has never been mainstream.


From jmccall at houston.rr.com  Fri May 20 02:45:18 2005
From: jmccall at houston.rr.com (J. W. McCall)
Date: Fri, 20 May 2005 06:45:18 GMT
Subject: PyGame and Rotozoom (Sorry if OT)
Message-ID: <2Ifje.100148$hu5.2601@tornado.texas.rr.com>

I'm not sure if this is off-topic, since it doesn't deal with Python 
itself, but here goes:

I'm messing around with writing a simple "game" where the player (a 
crudely drawn smiley face) moves by rotating and moving back or forward 
(think Resident Evil, but from an always-above view).  After much 
hacking, I have it working where left and right rotate the player sprite 
and up always moves the sprite whichever direction it's facing, while 
down is reverse.  I'm using pygame.transform.RotoZoom().

My problem is that it doesn't rotate smoothly.  When it rotates, the 
corners of the image (just a plain white background) look like they're 
hitting some barrier and making it move around.  Think of an empty box 
turned diagonally (so that it looks like a diamond, with its open end 
facing you), and a cube in that box being turned while it's resting in 
the bottom corner.  I want it to rotate smoothly around its center, it's 
it's not doing that.

I'm guessing that it has something to do with me not setting up a Rect 
right, but I'm not sure.  Maybe this is a limitation of Rotozoom/Rotate?

Any advice would be greatly appreciated.  And yes, I'm a rank PyGame newbie.

Thanks,

J. W. McCall


From jstroud at mbi.ucla.edu  Sun May  8 16:39:47 2005
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Sun, 8 May 2005 13:39:47 -0700
Subject: Language documentation ( was Re: Computing Industry shams)
In-Reply-To: <1415322.AzhuxSBQdk@yahoo.com>
References: <1115509201.680334.140840@f14g2000cwb.googlegroups.com>
	<874qdezh76.fsf@kafka.homenet> <1415322.AzhuxSBQdk@yahoo.com>
Message-ID: <200505081339.47460.jstroud@mbi.ucla.edu>


http://www.developer.com/lang/article.php/10924_3330231_3

On Sunday 08 May 2005 11:53 am, alex goldman wrote:
> He's right actually. If we understand the term "greedy" as it's used in
> graph search and optimization algorithms, Python's RE matching actually IS
> greedy.

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From peter at engcorp.com  Thu May 26 23:06:27 2005
From: peter at engcorp.com (Peter Hansen)
Date: Thu, 26 May 2005 23:06:27 -0400
Subject: Case Sensitive, Multiline Comments
In-Reply-To: <1117154013.092736.298310@g14g2000cwa.googlegroups.com>
References: <1117137316.140791.210430@g14g2000cwa.googlegroups.com>
	<8664x5y92g.fsf@guru.mired.org> <429654DA.9050903@lexicon.net>
	<1117154013.092736.298310@g14g2000cwa.googlegroups.com>
Message-ID: <4qCdnfQ-paWWEgvfRVn-og@powergate.ca>

Elliot Temple wrote:
> Thanks for the link on case sensitivity.  I'm curious about the person
> who found case sensitivity useful though: what is it useful for?

I wasn't that person, but I do find case sensitivity very useful.

Mainly it's useful in that it allows me not to spend any time at all 
worrying that I just might have a collision in my naming of various 
entities that are conceptually in different spaces but which -- due to 
the nature of the language I'm using -- happen to co-exist in the same 
namespace.

For example, although this contrived example suggests poor imagination 
in picking names, I think it demonstrates the point.

INVENTORYCODE = 5   # in effect one item in a constant "enum"

class InventoryCode:
     '''Might represent something to do with inventory codes... duh'''


def myfunc():
     inventoryCode = someOtherFunction()


In other words, I have a CONSTANT, a Class, and an instance, and if the 
set of code involved were large enough, these three things might be 
defined far enough apart that the potential collision wouldn't be as 
obvious as it is here.

More to the point, there might not be any relationship between these 
things in my mind as I'm programming, and having to deal with an error 
message from a compiler or, worse, a run time error resulting from this 
collision would really annoy me.

Case sensitivity might not be something we should be deliberately 
exercising on a daily basis, but there's no good reason (in my opinion) 
for not having it available to allow one freedom in naming (assuming one 
is sane and uses consistent convention for the case of things like 
constants, classes, and instances) without the worry of pesky collisions.

-Peter


From gandalf at geochemsource.com  Wed May 18 09:18:01 2005
From: gandalf at geochemsource.com (Laszlo Zsolt Nagy)
Date: Wed, 18 May 2005 15:18:01 +0200
Subject: super() and automatic method combination
In-Reply-To: <7xvf5gra9z.fsf_-_@ruckus.brouhaha.com>
References: <7xvf5gra9z.fsf_-_@ruckus.brouhaha.com>
Message-ID: <428B4089.8070904@geochemsource.com>


>
>I have the impression that this is supposed to call the f method
>in both A and B, so it should print
>  
>
Not really true. The first parameter of 'super' should be a type, not an 
instance.

>   A
>   B
>   C
>or maybe
>  B
>  A
>  C
>depending on the resolution order.  However, it only calls A.f and not B.f.
>
>I also notice that if I say
>
>
>    class B(object):
>        def f(self):
>            super(B,self).f()
>            print 'b'
>
>then 
>  test(B)
>raises an exception since B has no superclass with an f method.  
>
Correct. When you use super(B,self) it accesses the current instance as 
the class B. If it has no method named 'f' then this will end up in an 
exception.

>That doesn't seem like such a good thing necessarily.
>  
>
But yes, it is. When you try to call a nonexistent method, it should 
raise an exception.

>Anyway, is there a preferred way of writing this example so that C.f
>automatically calls both A.f and B.f?
>  
>
I do not know a preferred way. However, I made this example for you, I 
hope it helps.


class CallSupersMixin(object):
    def callsupers(self,fname,*args,**kwargs):
        l = self.__class__.__bases__
        for cls in l:
            if hasattr(cls,fname):
                getattr(cls,fname)(self,*args,**kwargs)
            elif cls == CallSupersMixin:
                pass
            else:
                raise AttributeError("Base class %s does not have a 
method named %s " % ( str(cls),fname ) )
                   
       
class A(object):
    def f(self):
        print 'A.f called'
   
class B(object):
    def f(self):
        print 'B.f called'
       
class AB(A,B,CallSupersMixin):
    def f(self,*args,**kwargs):
        self.callsupers('f',*args,**kwargs)
   
ab = AB()
ab.f()


Of course you can remove the "raise AttributeError" part. Then it will 
call only the classes that have the given method.
I know it is not a very good example but you can go from here.
Best,

   Laci 2.0

-- 
_________________________________________________________________
  Laszlo Nagy		      web: http://designasign.biz
  IT Consultant		      mail: gandalf at geochemsource.com

     		Python forever!




From aa at hanmail.net  Mon May 30 00:17:14 2005
From: aa at hanmail.net (´º½º66)
Date: Mon, 30 May 2005 13:17:14 +0900
Subject: test sorrry
Message-ID: <d7e3pa$qs2$1@news2.kornet.net>

aaa




From jason.mobarak at gmail.com  Mon May  9 03:46:44 2005
From: jason.mobarak at gmail.com (Jason  Mobarak)
Date: 9 May 2005 00:46:44 -0700
Subject: Python Pseudo-Switch
References: <mailman.156.1115512603.29826.python-list@python.org>
	<1115527801.791201.310760@g14g2000cwa.googlegroups.com>
Message-ID: <1115624804.448449.91830@g14g2000cwa.googlegroups.com>

# -*- python -*-

import sys


def switchFor (target):
    sw = '__switch_table__'
    # please pretend the frame hack is not here,
    # it happens to work for classes and messing with
    # frame stack in a try/except is probably okay
    try:
        raise Exception()
    except:
        defs = sys.exc_info()[2].tb_frame.f_back.f_locals
    if sw not in defs:
        defs[sw] = {}
    table = defs[sw]
    def _(meth):
        table[target] = meth
        return meth
    return _


class SwitchMixin (object):

    def __init__ (self):
        self.__switch_table__ = self.__switch_table__.copy()

    def switchOn (self, target, *args, **kw):
        return self.__switch_table__[target](self, *args, **kw)


if __name__ == '__main__':

    class SwitchTest(SwitchMixin):

        @switchFor("foo")
        def switch (self, arg):
            print arg * 3

        @switchFor("bar")
        def switch (self, arg):
            print "__%s__" % (arg,)

        @switchFor("baz")
        def switch (self, arg):
            print arg + ''.join(reversed(arg))

    st = SwitchTest()

    st.switchOn("foo", "oof")
    st.switchOn("bar", "rab")
    st.switchOn("baz", "zab")



From pinard at iro.umontreal.ca  Tue May 10 09:21:48 2005
From: pinard at iro.umontreal.ca (=?iso-8859-1?Q?Fran=E7ois?= Pinard)
Date: Tue, 10 May 2005 09:21:48 -0400
Subject: pyvm -- faster python
In-Reply-To: <42807E22.5050100@ceid.upatras.gr>
References: <mailman.164.1115548611.29826.python-list@python.org>
	<1115561483.741761.212140@f14g2000cwb.googlegroups.com>
	<42807E22.5050100@ceid.upatras.gr>
Message-ID: <20050510132148.GB20928@alcyon.progiciels-bpi.ca>

[Stelios Xanthakis]

> I'm afraid this may end up dead before unborn too.  So it depends what
> people want. If nobody cares, [...]

People might not care so much about what could be done about your
project, unless you give them proper and complete means for evaluating
the state of affairs.  Your project is very likely to die if you keep
your sources closed, and yourself loose interest in the project.

Opening your sources is no guarantee either that the community will
adopt your project.  But this might give your project a better chance.

-- 
Fran?ois Pinard   http://pinard.progiciels-bpi.ca


From remi at cherrypy.org  Wed May  4 11:12:39 2005
From: remi at cherrypy.org (remi at cherrypy.org)
Date: 4 May 2005 08:12:39 -0700
Subject: ANN: CherryPy-2.0-final released
Message-ID: <1115219559.776437.200250@o13g2000cwo.googlegroups.com>

Hello everyone,

I am happy to announce the first stable release of CherryPy-2.

CherryPy-2 is a pythonic, object-oriented web development framework.

CherryPy-2 is a redesign of CherryPy-1 (the unpythonic features have
been removed): no more compilation step, pure python source code (no
more "CherryClass").


Here is a sample Hello, World in CherryPy-2:

# from cherrypy import cpg
# class HelloWorld:
#     @cpg.expose
#     def index(self):
#         return "Hello world!"
# cpg.root = HelloWorld()
# cpg.server.start()

Main properties:
- this code starts a multi-threaded HTTP server that dispatches
requests to methods
- requests like "http://domain/dir/page?arg1=val1&arg2=val2" are
mapped to "dir.page(arg1='val1', arg2='val2')"
- CherryPy also supports "positional" arguments in URLs like
http://domain/book/science/9
- requests are mapped to an object tree that is "mounted" on cpg.root
(for instance: "cpg.root.user", "cpg.root.user.remi", ...)
- method must be explicitely exposed with a decorator "@cpg.expose"
(or "index.exposed = True" for Python-2.3)
- methods can return a generator instead of a string (useful when
generating big pages)

Here is a non-exhaustive list of CherryPy-2 features:
multi-threaded HTTP server, XML-RPC server, sessions, form handling,
authentication, unicode support, gzip-compression, virtual hosting,
WSGI adapter

The design of CherryPy-2 allows to easily write/use pluggable "filters"
or "modules":
- filters perform operations on the request/response such as
gzip-compression or string encoding
- modules are web applications (like a blog or a web forum) than can
be easily "mounted" anywhere you want in your website

CherryPy-2 is already used in production by many sites and is
supported by an active community.

Remi.

http://www.cherrypy.org



From m at m.com  Mon May  2 09:09:54 2005
From: m at m.com (monkey)
Date: Mon, 2 May 2005 21:09:54 +0800
Subject: Is python support jxta now?
References: <42760108$1_2@rain.i-cable.com> <d5535o$p27$00$1@news.t-online.com>
Message-ID: <4276269f_3@rain.i-cable.com>

> Bittorrent, one of the most actively used p2p protocols is _written_ in
> python.
>
> Diez B. Roggisch

Hey man, no, the jxta p2p protocols is not mean the bittorrent stuff. It is
a fully decentralized network protocol, not confine to file transfer.




From bcarey at ix.netcom.com  Tue May 24 14:25:51 2005
From: bcarey at ix.netcom.com (bc)
Date: 24 May 2005 11:25:51 -0700
Subject: pygame 1.6 for windows (python2.4)
Message-ID: <1116959151.370529.261690@g49g2000cwa.googlegroups.com>

Hi All,

Does anyone have any info concerning the windows pygame 1.6 for
python2.4?  It doesn't seem to be available yet.   Will pygame1.6 for
python23 work with python24?

Thanks for any help concerning this.

BC



From flupke at nonexistingdomain.com  Thu May 12 03:14:36 2005
From: flupke at nonexistingdomain.com (flupke)
Date: Thu, 12 May 2005 07:14:36 GMT
Subject: subclass dialog or put in the resource files?
Message-ID: <wnDge.88593$A37.5358682@phobos.telenet-ops.be>


I'm using wxPython and design the gui via wxglade. One of the gui 
components is a simple dialog class that gets displayed when a user 
exits the program.
I want to use the same dialog but with a different text for closing 
certain dialogs in the program. (it's a pure "do you want to exit 
<insert screen name>" dialog)

What would i better use, knowing the rest of the gui is in a resource 
(xrc) file:

1. Find some way to put a standard exit dialog in the resource file and 
then somehow try to set the message to the correct one.

2. Make a simple dialog class that accepts the message to be displayed. 
I could even use glade to generate the python code for a start.

What would be the better/cleaner/logical way to do this?

Thanks,
Benedict


From bcarey at ix.netcom.com  Tue May 24 17:11:38 2005
From: bcarey at ix.netcom.com (bc)
Date: 24 May 2005 14:11:38 -0700
Subject: pygame 1.6 for windows (python2.4)
In-Reply-To: <429380c5$0$24449$da0feed9@news.zen.co.uk>
References: <1116959151.370529.261690@g49g2000cwa.googlegroups.com>
	<429380c5$0$24449$da0feed9@news.zen.co.uk>
Message-ID: <1116969098.442603.193670@g43g2000cwa.googlegroups.com>

Thanks for the reply, Will... I have been to the site, but I get a "URL
not found error" when I try the pygame 1.6 for python24 link;  I guess
I will just keep trying until the HTML is fixed.



From poisondart985 at gmail.com  Sat May 28 19:48:44 2005
From: poisondart985 at gmail.com (poisondart)
Date: 28 May 2005 16:48:44 -0700
Subject: Software licenses and releasing Python programs for review
In-Reply-To: <mailman.216.1117291885.18027.python-list@python.org>
References: <1117245014.218831.317750@g14g2000cwa.googlegroups.com>
	<mailman.216.1117291885.18027.python-list@python.org>
Message-ID: <1117324124.350474.136600@g14g2000cwa.googlegroups.com>

Thanks for the replies. They have been very helpful. I'll have to read
through the licenses you've listed in more detail, but the creative
commons license of which James William Pye mentions seems to be what
I'll be using.

The reason why I need people to review my code and also the ideas
behind the code is mostly for academic interest...but not necessarily
reserved to an academic audience...which is why I don't want people to
make profit from it. It uses ideas from a language--which would be
ridiculous (to me) for anybody to make profit from selling the
mechanics of a natural language.

The NLTK mailing list seems to be what I was looking for...I'll start
checking that out. Thanks for the link.



From dalke at dalkescientific.com  Tue May 31 03:58:39 2005
From: dalke at dalkescientific.com (Andrew Dalke)
Date: Tue, 31 May 2005 07:58:39 GMT
Subject: pickle alternative
References: <1117520276.417970.207680@g14g2000cwa.googlegroups.com>
	<pan.2005.05.31.07.11.10.818637@dalkescientific.com>
	<1117524878.988878.181820@g44g2000cwa.googlegroups.com>
Message-ID: <pan.2005.05.31.07.58.37.334894@dalkescientific.com>

simonwittber wrote: 
>>From the marhal documentation:
> Warning: The marshal module is not intended to be secure against
> erroneous or maliciously constructed data. Never unmarshal data
> received from an untrusted or unauthenticated source.

Ahh, I had forgotten that.  Though I can't recall what an attack
might be, I think it's because the C code hasn't been fully vetted
for unexpected error conditions.
 
> Any idea how this might be solved? The number of bytes used has to be
> consistent across platforms. I guess this means I cannot use the struct
> module?

How do you want to solve it?  Should a 64 bit machine be able to read
a data stream made on a 32 bit machine?  What about vice versa?  How
are floats interconverted?

You could preface the output stream with a description of the encoding
used: version number, size of float, size of int (which should always
be sizeof float these days, I think).  Read these then use that
information to figure out which decode/dispatch function to use.

				Andrew
				dalke at dalkescientific.com



From peter at engcorp.com  Wed May 25 09:38:24 2005
From: peter at engcorp.com (Peter Hansen)
Date: Wed, 25 May 2005 09:38:24 -0400
Subject: Just remember that Python is sexy
In-Reply-To: <O9v*jQrPq@news.chiark.greenend.org.uk>
References: <1116899839.323185.58350@g49g2000cwa.googlegroups.com>
	<O9v*jQrPq@news.chiark.greenend.org.uk>
Message-ID: <v8adndXwp-hF4gnfRVn-ig@powergate.ca>

Sion Arrowsmith wrote:
> But can you come up with a method for remembering which way
> round str.find() and str.index() are?

Don't use "str" and you won't have anything to remember:

'foo bar baz'.find('spam')
'spanish inquisition'.index('parrot')

-Peter


From querypk at gmail.com  Fri May  6 15:44:38 2005
From: querypk at gmail.com (querypk at gmail.com)
Date: 6 May 2005 12:44:38 -0700
Subject: min max of a list
In-Reply-To: <427bc292$1_2@newspeer2.tds.net>
References: <1115245476.036508.273930@g14g2000cwa.googlegroups.com>
	<427bac26$1_3@newspeer2.tds.net>
	<1115406819.884785.52080@o13g2000cwo.googlegroups.com>
	<427bc292$1_2@newspeer2.tds.net>
Message-ID: <1115408678.867849.87500@z14g2000cwz.googlegroups.com>

oh yes its the same case. even  [0,4,9,2,0] as a set  [2,6] and may be
not [2,7]. Its not that you are wrong its jus that I was not clear.
Sorry about that.



From exarkun at divmod.com  Fri May 27 15:42:44 2005
From: exarkun at divmod.com (Jp Calderone)
Date: Fri, 27 May 2005 19:42:44 GMT
Subject: Problem: using signal.alarm() to stop a run-away os.system()
	command
In-Reply-To: 0
Message-ID: <20050527194244.559.72959310.divmod.quotient.11289@ohm>

On 27 May 2005 12:09:39 -0700, mkent at webmd.net wrote:
>I'm trying to use signal.alarm to stop a run-away os.system command.
>Can anyone exlain the following behavior?
>
>Given following the trivial program:
>
>import os
>import signal
>
>def timeoutHandler(signum, frame):
>    print "Timeout"
>    raise ValueError
>
>
>signal.signal(signal.SIGALRM, timeoutHandler)
>signal.alarm(5)
>
>os.system("yes")
>
>signal.alarm(0)
>
>
>What I expect is that the Linux/UNIX 'yes' command (which runs until
>terminated) would be stopped after 5 seconds, when the timeoutHandler
>is called, thus raising a ValueError and terminating this example
>program.  Instead, the 'yes' command run until it is terminated (by,
>say, a kill command), at which time the timeoutHandler is called.  In
>other words, the running of the 'yes' command acts like it is blocking
>the SIGALRM signal until it terminates, at which time the SIGALRM
>signal is raised.  This is quite surprising, and totally defeats my
>ability to catch a run-away process.  Can anyone see what I'm doing
>wrong?

CPython only delivers signals to Python programs in between bytecodes.  Since your program is hanging around in the system(3) call, it isn't executing any bytecode, so CPython never gets an opportunity to deliver the signal.

Try using a pipe (popen() or the new subprocess module) and select() with a timeout of 5.

Jp


From just at xs4all.nl  Mon May  2 10:11:37 2005
From: just at xs4all.nl (Just)
Date: Mon, 02 May 2005 16:11:37 +0200
Subject: pop3proxy
References: <4276329a$0$289$636a15ce@news.free.fr>
Message-ID: <just-B17F7F.16113702052005@news1.news.xs4all.nl>

In article <4276329a$0$289$636a15ce at news.free.fr>,
 BrokenClock <brokenclock at free.fr> wrote:

> Here is a python newbie! I've choose it to make a pop3 proxy - I want to 
> filter content between a pop3 client and a pop3 server, and I have no 
> control on the server...
> First, I wanted to do an non-filtering, just logging, mono-thread proxy 
> to make some test..

Not directly helpong with your problem, but perhaps some example code 
helps: the spambayes project contains a working pop3 proxy.

Just


From grante at visi.com  Wed May 18 15:25:25 2005
From: grante at visi.com (Grant Edwards)
Date: Wed, 18 May 2005 19:25:25 -0000
Subject: speeding up Python script
References: <3evgolF56gtkU3@individual.net>
Message-ID: <118n5l557ften8a@corp.supernews.com>

On 2005-05-18, Luis P. Mendes <luis_lupe2XXX at netvisaoXXX.pt> wrote:

> I have a 1000 line python script that takes many hours to
> finish.  It is running with six inside 'for' loops.

[...]

> How can I dramatically improve speed?

In probably order of efficacy:

 1) Use a better algorithm

 2) Replace 'for' loops with vector operations or list
    comprehensions

 3) Install more RAM

 4) Install a faster disk drive
 
 5) Use a faster CPU

 6) Rent DVDs to watch while program is running. 

Before you do anything, you should profile your program to see
where the time is being spent.
 
-- 
Grant Edwards                   grante             Yow!  Hand me a pair of
                                  at               leather pants and a CASIO
                               visi.com            keyboard -- I'm living
                                                   for today!


From gene.tani at gmail.com  Tue May 10 21:11:27 2005
From: gene.tani at gmail.com (gene.tani at gmail.com)
Date: 10 May 2005 18:11:27 -0700
Subject: A Faster Way...
In-Reply-To: <slrnd82cms.2fg.klaus@main.szn.dk>
References: <mailman.297.1115744017.29826.python-list@python.org>
	<slrnd82cms.2fg.klaus@main.szn.dk>
Message-ID: <1115773887.690435.19590@f14g2000cwb.googlegroups.com>

hmm, there's lots of ways, huh?  you can use itertools.zip instead of
builtin zip, or do:

 map(None, list1, list2)

, which will pad the shorter one to match the longer one.



From exarkun at divmod.com  Tue May 10 15:49:08 2005
From: exarkun at divmod.com (Jp Calderone)
Date: Tue, 10 May 2005 19:49:08 GMT
Subject: Put a file on an ftp server over ssl
In-Reply-To: <1115749959.870607.20720@o13g2000cwo.googlegroups.com>
Message-ID: <20050510194908.15422.1488198378.divmod.quotient.30738@ohm>

On 10 May 2005 11:32:39 -0700, Daniel Santa Cruz <dstcruz at gmail.com> wrote:
>I looked briefly at this option, but it seems to me that I would have
>to learn a whole architecture just to put a file on an ftp server.
>Seems like a bit much, don't you think?

  (In the absence of any quoted material, assuming this is directed at my suggestion to use Twisted)

  Depends how important getting the file onto the server is to you :)  You might  want to consider future tasks which could be aided by the knowledge of Twisted and treat this as a good opportunity to get some exposure.  Or maybe it's really not worth it to you.  Only you can decide, I suppose.

  Jp


From bokr at oz.net  Wed May  4 14:25:22 2005
From: bokr at oz.net (Bengt Richter)
Date: Wed, 04 May 2005 18:25:22 GMT
Subject: Data smoothing algorithms? - Thank you all
References: <000c01c54c38$313eb580$0201a8c0@mcuf7><mailman.37.1114800769.14961.python-list@python.org><MLGdnZTDLvEpGe_fRVn-rw@comcast.com><mailman.69.1114896083.14961.python-list@python.org>
	<io1871tev39vustiab1u32fd063skrvl01@4ax.com>
	<mailman.88.1115115112.6583.python-list@python.org>
	<li7f71h28s2r4u4o934ubshlik4uhka1ke@4ax.com>
	<c2qh71ht4ls8ts604i8sdheb37d13p9qhc@4ax.com>
Message-ID: <42790da4.665619460@news.oz.net>

On Wed, 04 May 2005 16:01:07 GMT, Dennis Lee Bieber <wlfraed at ix.netcom.com> wrote:

>On Tue, 03 May 2005 16:28:34 GMT, Dennis Lee Bieber
><wlfraed at ix.netcom.com> declaimed the following in comp.lang.python:
>
>
>> 	It's not going to be easy, though... <G>
>
>	Yes, talking to myself... I crawled through one of my texts (at
>work) yesterday. This is incomplete -- I wasn't going to copy the entire
>chapter -- but may serve as an example of some of the complexity that
>goes into some of the entries found in almanacs:
>
>From: "Spherical Astronomy" [Robin M. Green; 1985 Cambridge University] 
>
>"The 1980 theory of nutation contains 106 terms both in longitude and
>the obliquity" 
>
>Displacement of true celestial pole from mean pole, /principal/ terms
>only -- lunar caused nutation
>
>Nutation in longitude =         -17".1996 sin omega 
>                                -1".3187 sin (2F - 2D + 2 omega) 
>                                -0".2274 sin (2F - 2 omega) 
>Nutation in obliquity = 9".2025 cos omega 
>                                + 0".5736 cos (2F - 2D + 2 omega) 
>                                + 0".0927 cos (2F - 2 omega) 
>
>Where: 
>        omega = mean longitude of the node (I presume of the moon)
>        F = mean argument from node (moon) 
>        D = mean elongation from sun (moon) 
>
>Periods of interest: 
>18.6 year lunar (movement of the node), 
>6 month solar, 
>14 day lunar... 
>
>26000 year luni-solar precession 
>
I wonder why the original post, which I presume was

    http://mail.python.org/pipermail/python-list/2005-April/278752.html

doesn't show up in google groups, but can seemingly only be found indirectly
by google search on "smoothing algorithms" site:python.org giving one main post

    http://mail.python.org/pipermail/python-list/2005-April/278871.html

which is a reply with no immediate apparent parent. And then going to the
sorted-by-thread index, where you can find the original.

Maybe it's because there was an html attachment (which I didn't "wget" to investigate)?

Anyway, the original post sounds like the OP was really just looking for better numbers
than in some text tables he found, and not really for a way of estimating better numbers based
on flawed data (though that was what he apparently thought his best option was, using the
rounded text tables as data). I'd bet that is not his best option, especially since distributions
of actual roundoff errors can be weird. There must be tons of telescope-pointing and planetarium-driving
software out there that can do similar stuff. And if that's not accurate enough, the relevant
newsgroup crowd will be able to advise, I'd bet.

Regards,
Bengt Richter


From 550283447739-0001 at t-online.de  Tue May 17 07:50:41 2005
From: 550283447739-0001 at t-online.de (Oliver Albrecht)
Date: Tue, 17 May 2005 13:50:41 +0200
Subject: Image.putpalette(Colors)?
Message-ID: <d6cl5u$mas$05$1@news.t-online.com>

 Has somebody a example-script how i can put a other palette to a image?
(after this the image should have similar outlook)




From swaroopch at gmail.com  Tue May  3 13:30:20 2005
From: swaroopch at gmail.com (Swaroop C H)
Date: Tue, 3 May 2005 23:00:20 +0530
Subject: python+windows/linux -> write stdout text to always on top text?
In-Reply-To: <1115138497.567243.308570@z14g2000cwz.googlegroups.com>
References: <1115064842.454916.305970@f14g2000cwb.googlegroups.com>
	<mailman.87.1115114454.6583.python-list@python.org>
	<1115138497.567243.308570@z14g2000cwz.googlegroups.com>
Message-ID: <351e887105050310307c92f227@mail.gmail.com>

On 3 May 2005 09:41:37 -0700, flamesrock <flamesrock at gmail.com> wrote:
> I'm writing a multiplayer component to an existing closed source game,
> and I'd like users to be able to see whats going on in the chat while
> playing the game.
> Is it possible?

I do not have much knowledge in this area but your query is regarding
the abilities of the game engine itself and not much to do with
Python. One suggestion is to look up any documentation of that game
engine's for this capability. Another suggestion is to look at how
Doom 2 or some other open source game engines achieve the same.


HTH,
-- 
Swaroop C H
Blog: http://www.swaroopch.info
Book: http://www.byteofpython.info


From t-meyer at ihug.co.nz  Thu May 19 18:49:58 2005
From: t-meyer at ihug.co.nz (Tony Meyer)
Date: Fri, 20 May 2005 10:49:58 +1200
Subject: problem uploading ZIP file tp PyPI
In-Reply-To: <ECBA357DDED63B4995F5C1F5CBE5B1E802E59C74@its-xchg4.massey.ac.nz>
Message-ID: <ECBA357DDED63B4995F5C1F5CBE5B1E801B0F736@its-xchg4.massey.ac.nz>

>>>> setup.py sdist --format=zip
>>>
>>> Try without the --format arg. The code is being too paranoid.
>> 
>> Result: (A) produces a zip file with only minor differences 
>> (presumably a timestamp):
> 
> Oh, so even without --format, a ZIP source dist file is 
> produced anyway? If this is the case, please file a bug against PyPI.

How is this a bug?  sdist is meant to produce a zip file on Windows if
--format isn't used.  If "upload" overrides this for some reason, then the
documentation should say so (and, IMO, it would be a mistake for that to be
the case).

=Tony.Meyer



From peter at engcorp.com  Wed May 11 10:07:56 2005
From: peter at engcorp.com (Peter Hansen)
Date: Wed, 11 May 2005 10:07:56 -0400
Subject: Replacing open builtin
In-Reply-To: <1115819159.865288.238650@g49g2000cwa.googlegroups.com>
References: <1115816164.517116.124070@g14g2000cwa.googlegroups.com>
	<mailman.351.1115817322.29826.python-list@python.org>
	<1115819159.865288.238650@g49g2000cwa.googlegroups.com>
Message-ID: <_9qdnT1T7fmRjx_fRVn-1Q@powergate.ca>

rmm at iname.com wrote:
> I had a quick look at the python source code and fileobject.c is one of
> the core classes which, I would imagine, is why a reference can be
> obtained.  The other classes (method, dictionaries etc) don't look so
> much of a liability.  I'll maybe try disabling the fopen calls in
> fileobject and see if it breaks anything (I've no need to open/close
> files using the standard libraries).
> 
> Are there any other holes you can think of in the following scenario-
> I disable all builtins except import which I protect in my 'Isolate'
> class, I then only allow import to import a single module name.

You *really* ought to be checking the list archives for the *many* past 
discussions of this, and the many ways in which it is nowhere near as 
easy as you seem to think it might be, as well as for the variety of 
partially completed efforts -- some of which closely resemble your 
approach -- which have been abandoned after it was demonstrated how the 
could not work.

On the other hand, after reading all that, you just might be the one to 
come up with the solution that combines just enough of each approach to 
solve the problem once and for all, and the community would be very 
grateful to you.

But I doubt you'll solve this by asking Jp to review (and, inevitably, 
shoot down) each idea you come up with.  Give him a break until you've 
read some of the archived material on this. :-)

-Peter


From simon.brunning at gmail.com  Thu May  5 08:25:13 2005
From: simon.brunning at gmail.com (Simon Brunning)
Date: Thu, 5 May 2005 13:25:13 +0100
Subject: [newbie] how to look up functions
In-Reply-To: <4I4S42$89a@bbs.wretch.cc>
References: <4I4S42$89a@bbs.wretch.cc>
Message-ID: <8c7f10c6050505052533f6096d@mail.gmail.com>

On 05 May 2005 06:27:14 GMT, slayer <slayer.bbs at bbs.wretch.cc> wrote:
> Hi all,
>  I am a python newbie. I need some help to loop up about API, or reference.
> If any web that Java API Document, I will try it. Is there some one like it
> or other ways?

http://www.google.com/search?q=python+documentation

-- 
Cheers,
Simon B,
simon at brunningonline.net,
http://www.brunningonline.net/simon/blog/


From pinard at iro.umontreal.ca  Thu May 12 10:32:32 2005
From: pinard at iro.umontreal.ca (=?iso-8859-1?Q?Fran=E7ois?= Pinard)
Date: Thu, 12 May 2005 10:32:32 -0400
Subject: pyvm -- faster python
In-Reply-To: <7xis1pqdt0.fsf@ruckus.brouhaha.com>
References: <m102l2-9qr.ln1@home.rogerbinns.com>
	<mailman.264.1115716603.29826.python-list@python.org>
	<vu38l2-k5v.ln1@home.rogerbinns.com>
	<7xvf5qbir1.fsf@ruckus.brouhaha.com>
	<nt98l2-1e.ln1@home.rogerbinns.com>
	<7xpsvymlse.fsf@ruckus.brouhaha.com>
	<1115791624.856252.247890@z14g2000cwz.googlegroups.com>
	<7x1x8el18e.fsf@ruckus.brouhaha.com>
	<3eg2vnF2psplU1@individual.net>
	<7xis1pqdt0.fsf@ruckus.brouhaha.com>
Message-ID: <20050512143232.GA7551@phenix.progiciels-bpi.ca>

[Paul Rubin]

> It's true that CPython doesn't have a compiler and that's
> a serious deficiency.

Hi, Paul.  I did not closely follow all of the thread, so maybe my
remark below, only repeats what others might have said and I missed?

Deep down, why or how not having a [traditional, to-native-code]
compiler is a deficiency for CPython?  We already know that such a beast
would not increase speed so significantly, while using much more memory.

It is true that a standard traditional compiler for CPython would allow
one would be to check the box:

    [x] has a compiler

in the fashion of the day language information sheet, and for some
readers, not having that box checked is a deficiency in itself. :-)

So far, it seems that the only way to get speed is to attach static
type information to some variables.  Some compilation avenues do it
through information added either in Python source code or in extraneous
declarative files, other approaches do it by delaying compilation
until such information is discovered at run-time.  The former taints
the purity of real CPython as the only source.  The later often shows
spectacular speed gain, but not always, and may bloat size unboudedly.

-- 
Fran?ois Pinard   http://pinard.progiciels-bpi.ca


From utabintarbo at gmail.com  Sat May  7 10:54:22 2005
From: utabintarbo at gmail.com (utabintarbo at gmail.com)
Date: 7 May 2005 07:54:22 -0700
Subject: globbing multiple wildcards
Message-ID: <1115477662.937084.260270@g14g2000cwa.googlegroups.com>

I have a path spec similar to '/home/*/.mozilla/*/*/cache*/*' (this
will probably look familiar to *nix users) with multiple wildcards. I
am finding it difficult gathering ALL file pathnames which match this
spec. Can anyone shed some light on this for a python noob?

TIA
Bob



From rbt at athop1.ath.vt.edu  Fri May 27 11:07:56 2005
From: rbt at athop1.ath.vt.edu (rbt)
Date: Fri, 27 May 2005 11:07:56 -0400
Subject: cpu usage limit
In-Reply-To: <1117206216.695085.282510@g44g2000cwa.googlegroups.com>
References: <1117206216.695085.282510@g44g2000cwa.googlegroups.com>
Message-ID: <d77d4c$21a$1@solaris.cc.vt.edu>


mf wrote:
> Hi.
> 
> My problem:
> How can I make sure that a Python process does not use more that 30% of
> the CPU at any time. I only want that the process never uses more, but
> I don't want the process being killed when it reaches the limit (like
> it can be done with resource module).
> 
> Can you help me?
> 
> Thanks in advance.
> 
> Best regards,
> Markus
> 

Are you looping during a cpu intensive task? If so, make it sleep a bit 
like this:

for x in cpu_task:
     time.sleep(0.5)
     do(x)


From f.geiger at vol.at  Wed May 18 15:41:39 2005
From: f.geiger at vol.at (F. GEIGER)
Date: Wed, 18 May 2005 21:41:39 +0200
Subject: [pysqlite] pysqlite2.dbapi2.OperationalError: cannot commit
	transaction - SQL statements in progress
Message-ID: <d6g5p0$skp$1@news.hispeed.ch>

I've troubles to let my app take off using pysqlite.

What I wonder most for now is that "pysqlite2.dbapi2.OperationalError:
cannot commit transaction - SQL statements in progress" when I do this:

      t = time.time()
      n = len(self)
      while len(self):
         del self[0]
      self.commit()
      print "%d items deleted in %.3f secs. " % (n, time.time() - t)

self is of class DbTable which lets db tables be used like ordinary Python
objects (after an idea of Scott Scriven):

   def __len__(self):
      self._query_("select count(*) from %s %s" % (self._name,
self._whereClause))
      r = int(self._dbc.fetchone()[0])
      return r

and

   def __delitem__(self, i):
      '''Enables you to remove rows this way: del movies[58]
      '''
      q = "select %s from %s %s %s limit %s, 1" % (self._nameOfIdCol,
self._name, self._whereClause, self._orderClause, i)
      self._query_(q)
      rid = self._dbc.fetchone()[0]
      q = "delete from %s where %s='%s'" % (self._name, self._nameOfIdCol,
rid)
      self._query_(q)
      return

So it boils down to SELECT and DELETE statements called in a loop. After
that a commit is made.

What does pysqlite try to tell me here?


Kind regards
Franz GEIGER


PS.: I use pysqlite 2.0.1 on Python 2.3.4




From Bernd.Nawothnig at t-online.de  Sun May 15 13:27:01 2005
From: Bernd.Nawothnig at t-online.de (Bernd Nawothnig)
Date: Sun, 15 May 2005 19:27:01 +0200
Subject: A new to Python question
References: <1116088663.428932.130860@g43g2000cwa.googlegroups.com>
	<rfnhl2-ig5.ln1@Bernd.Nawothnig.dialin.t-online.de>
	<1116093118.599403.35940@g14g2000cwa.googlegroups.com>
	<tsKdnfF2xaKu3BvfRVn-iQ@comcast.com>
	<1116102355.715816.192840@z14g2000cwz.googlegroups.com>
	<42866cb8.177725696@news.oz.net>
	<1116109657.494997.315650@o13g2000cwo.googlegroups.com>
	<2g7jl2-qf8.ln1@Bernd.Nawothnig.dialin.t-online.de>
	<1116176591.072516.71020@g43g2000cwa.googlegroups.com>
Message-ID: <5cdkl2-5o1.ln1@Bernd.Nawothnig.dialin.t-online.de>

On 2005-05-15, M.E.Farmer wrote:

>> No. You claimed
> <quote>
> This will only create a tuple in memory
> </quote>
> That is not what I said please do not edit my words and call it a
> quote!

Again the whole sentence:

Message-ID: <1116093118.599403.35940 at g14g2000cwa.googlegroups.com>

| This will only create a tuple in memory that has no name to reference
| it by!

Please check it out. I did only cut the sentence. But that did not
change the sense of the part I quoted. (As I understood it, correct me
if I'm wrong, I'm not a native English speaker).

>> But we just learned that this is not the case.
> Yes it seems I was proven wrong and have learned much from the
> discussion ;) That is why I am here to learn from others and help if
> I can ( sometimes I am just plain wrong and I get the help )

I know that very well. I often learned much from such discussions too.

>> Reduced to this argument I have no objection.
> Glad to hear it.

>> Lisp is far from being ugly ;-)

> Your words not mine.I never said it was ugly.
> Lisp is beautiful but Python isn't Lisp, and the () *are* getting
> overloaded.

Understood and accepted.



Bernd

-- 
Those who desire to give up freedom in order to gain security,
will not have, nor do they deserve, either one. [T. Jefferson]


From mwooden at dtptypes.com  Fri May 27 08:59:41 2005
From: mwooden at dtptypes.com (Malcolm Wooden)
Date: Fri, 27 May 2005 12:59:41 +0000 (UTC)
Subject: Strings for a newbie
References: <d7726f$fdg$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
	<42970d69@news.eftel.com>
	<d773i4$g2p$1@nwrdmz03.dmz.ncs.ea.ibs-infra.bt.com>
	<42971235.9000805@lexicon.net>
Message-ID: <d775jt$plg$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>

my actual code is:

  for x in range(len(l)):
    h = string.split(l[x])

where the sentence string is in an array of one element 'l'
Error is:

Traceback (most recent call last):
  File "<string>", line 34, in ?
  File "<string>", line 27, in SentenceText
  File "C:\PYTHON22\lib\string.py", line 122, in split
    return s.split(sep, maxsplit)
AttributeError: 'list' object has no attribute 'split'


"John Machin" <sjmachin at lexicon.net> wrote in message 
news:42971235.9000805 at lexicon.net...
> Malcolm Wooden wrote:
>> Sorry John but that don't do it for me. Just get errors comming back
>>
>>
>> "John Machin" <sjmachin at lexicon.net> wrote in message 
>> news:42970d69 at news.eftel.com...
>>
>
>>>
>>>>>>s = "This is a sentence of words"
>>>>>>a = s.split()
>>>>>>a
>>>
>>>['This', 'is', 'a', 'sentence', 'of', 'words']
>>>
>
> Malcolm,
>
> What errors did you get? Please post a copy of what you see on your 
> screen; my palantir is on the fritz :-)
>
> Cheers,
> John 




From jstroud at mbi.ucla.edu  Thu May 12 21:17:06 2005
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Thu, 12 May 2005 18:17:06 -0700
Subject: tkFileDialog question
In-Reply-To: <1115937784.883303.131080@f14g2000cwb.googlegroups.com>
References: <1115937784.883303.131080@f14g2000cwb.googlegroups.com>
Message-ID: <200505121817.06722.jstroud@mbi.ucla.edu>

I think you are better off not binding a button like you are doing.
Use the "command" option to get the behavior you want. E.g:

class MyApp:
        def __init__(self, parent):
                self.myParent = parent
                self.myContainer1 = Frame(parent)
                self.myContainer1.pack()

                self.entry = Entry(self.myContainer1)
                self.entry.grid(row=0,column=0, columnspan=2)
                self.button1 = Button(self.myContainer1,
                        command=(lambda: self.button1Click(self)))
                self.button1.configure(text="...")
                self.button1.grid(row=0, column=2)
                self.button1.bind("<Return>", self.button1Click)

        def button1Click(self, event):
                filePick = tkFileDialog.askopenfilename()


James

On Thursday 12 May 2005 03:43 pm, jaime.suarez at crossmatch.net wrote:
> I am creating a very simple GUI with one Entry widget and
> one Button.  The purpose of the Button widget is to Browse for
> a file using tkFileDialog.askopenfilename().
>
> I bind the button to a handler which spawns a tkFileDialog. This
> works but the button __stays depressed__ after the handler returns!
> Any ideas why?
>
> class MyApp:
> 	def __init__(self, parent):
> 		self.myParent = parent
> 		self.myContainer1 = Frame(parent)
> 		self.myContainer1.pack()
>
> 		self.entry = Entry(self.myContainer1)
> 		self.entry.grid(row=0,column=0 columnspan=2)
>
> 		self.button1 = Button(self.myContainer1)
> 		self.button1.configure(text="...")
> 		self.button1.grid(row=0, column=2)
> 		self.button1.bind("<Button-1>", self.button1Click)
> 		self.button1.bind("<Return>", self.button1Click)
>
>
> 	def button1Click(self, event):
> 		filePick = tkFileDialog.askopenfilename()

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From mwm at mired.org  Thu May 12 00:52:56 2005
From: mwm at mired.org (Mike Meyer)
Date: Wed, 11 May 2005 23:52:56 -0500
Subject: Problems with csv module
References: <d5sngn$l4$03$1@news.t-online.com>
	<mailman.338.1115809896.29826.python-list@python.org>
	<d5spph$ktm$01$1@news.t-online.com>
	<a4r381p3s5uhud58tvd2m2nod1ebmo48u0@4ax.com>
	<d5tc55$q3e$1@sea.gmane.org>
	<17026.15830.303909.792010@montanaro.dyndns.org>
	<mailman.386.1115834572.29826.python-list@python.org>
	<4n8581hlta0e1jbp0nidliuam6fmb08nv1@4ax.com>
Message-ID: <86psvxkpuf.fsf@guru.mired.org>

John Machin <sjmachin at lexicon.net> writes:
> The CSV format is not defined at all, AFAIK.

Just for the record, <URL:
http://www.ietf.org/internet-drafts/draft-shafranovich-mime-csv-05.txt
>. You'll also see application that deal with the application/csv MIME
type.

        <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From percivall at gmail.com  Sat May  7 06:28:34 2005
From: percivall at gmail.com (Simon Percivall)
Date: 7 May 2005 03:28:34 -0700
Subject: handling more databases with ZEO
References: <d5gnda$of3$1@news.vol.cz>
Message-ID: <1115461714.504146.288450@f14g2000cwb.googlegroups.com>

You should take a look at
http://www.zope.org/Wikis/ZODB/FrontPage/guide/index.html



From rrr at ronadam.com  Sat May 14 11:45:38 2005
From: rrr at ronadam.com (Ron Adam)
Date: Sat, 14 May 2005 11:45:38 -0400
Subject: Quick Reference from module doc strings.
Message-ID: <42861D22.6000701@ronadam.com>


Does anyone have suggestions on how to improve this further?


Cheers,
Ron_Adam



def getobjs(object, dlist=[], lvl=0, maxlevel=1):
     """ Retrieve a list of sub objects from an object. """
     if object not in dlist:
         dlist.append(object)
     if lvl<maxlevel:
         dobj = dir(eval(object))
         for item in dobj:
             try:
                 dlist = getobjs(object+'.'+item, dlist, lvl+1)
             except:
                 pass
     return dlist

def printdoc(objectlist):
     """ Return a sorted printable quick reference
         guide from a list of objects. """
     outtext = []
     objectlist.sort(lambda x, y: cmp(x.lower(), y.lower()))
     for obj in objectlist:
         object = eval(obj)
         object_type = type(object)
         outtext.append('-'*40+'\n')
         outtext.append(str(obj)+'\n')
         if hasattr(object, '__module__'):
             outtext.append("Module:"+str(object.__module__)+'\n')
         if hasattr( object,'__class__'):
             outtext.append("Class:"+str(object.__class__)+'\n\n')
         else:
             outtext.append("Type:"+str(object_type)+'\n\n')
         if isinstance(object,str):
             if len(object)>200:
                 s = object[0:200]+"......"
             else:
                 s = object
             outtext.append(obj+'=')
             if '\n' in s: quotes='"""'
             else: quotes ='"'
             if len(s)>60: print
             outtext.append(quotes+s+quotes+'\n\n')
         elif (isinstance(object,str)
                 or isinstance(object,int)
                 or isinstance(object,bool)
                 or isinstance(object,tuple)
                 or isinstance(object,list)
                 or isinstance(object,dict)):
             s = str(object)
             if len(s)<200:
                 outtext.append(obj+'='+s+'\n\n')
             else:
                 outtext.append(obj+'='+s[0:200]+'......\n\n')
         if hasattr(object,'__doc__'):
             if object.__doc__ != type(object).__doc__:
                 outtext.append(str(object.__doc__)+'\n\n')
     return ''.join(outtext)

def quick_ref(name):
     """
     quick_ref(module_name) -> printable string

     Generate a sorted quick reference guide from an objects
     doc strings.  The module_name is a string with the name of
     the module or class to get documents string from.

     Example:
         import os
         print quick_ref('os')
     """
     objlist = getobjs(name)
     return printdoc(objlist)

if __name__ == "__main__":
     #import module before calling in most cases.
     print quick_ref('__builtins__')







From grante at visi.com  Tue May 31 15:44:53 2005
From: grante at visi.com (Grant Edwards)
Date: Tue, 31 May 2005 19:44:53 -0000
Subject: working with pointers
References: <d7iapk$6ck$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
	<JJSdnXLcZdUsLQHfRVn-1w@comcast.com>
	<d7ibjg$8en$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
	<mailman.299.1117566077.18027.python-list@python.org>
	<d7icc5$ab0$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
Message-ID: <119pfllqklchb20@corp.supernews.com>

On 2005-05-31, Michael <slick_mick_00 at hotmail.com> wrote:

> except numbers??

Um, no?

Unless you provide some context, how are we supposed to know
what you're asking about?

Numbers are immutable, so there is no practical difference. 

-- 
Grant Edwards                   grante             Yow!  Are we THERE yet? My
                                  at               MIND is a SUBMARINE!!
                               visi.com            


From programmer.py at gmail.com  Tue May  3 10:22:01 2005
From: programmer.py at gmail.com (Jaime Wyant)
Date: Tue, 3 May 2005 09:22:01 -0500
Subject: Any decent IM protocol implementations (icq or aim)
Message-ID: <d52c72d205050307224a8b7259@mail.gmail.com>

Can anyone recommend one?  Google isn't giving me much.

jw


From roy at panix.com  Fri May 27 09:14:25 2005
From: roy at panix.com (Roy Smith)
Date: Fri, 27 May 2005 09:14:25 -0400
Subject: write to the same file from multiple processes at the same time?
References: <e3617$429713d7$3eb01f24$9096@news.flashnewsgroups.com>
Message-ID: <roy-29C1D4.09142527052005@reader1.panix.com>

gabor <gabor at nekomancer.net> wrote:
> so, how does one synchronizes several processes in python?

This is a very hard problem to solve in the general case, and the answer 
depends more on the operating system you're running on than on the 
programming language you're using.

On the other hand, you said that each process will be writing a single line 
of output at a time.  If you call flush() after each message is written, 
that should be enough to ensure that the each line gets written in a single 
write system call, which in turn should be good enough to ensure that 
individual lines of output are not scrambled in the log file.

If you want to do better than that, you need to delve into OS-specific 
things like the flock function in the fcntl module on unix.


From sesquile at gmail.com  Fri May 27 14:46:26 2005
From: sesquile at gmail.com (mh)
Date: 27 May 2005 11:46:26 -0700
Subject: Determine if windows drive letter is hard drive or optical from
	python?
Message-ID: <1117219586.001829.74220@g49g2000cwa.googlegroups.com>

Hi Folks-

I'm trying to do a simple emulation of unix "locate" functionality in
python for windows.

Problem is I don't want to crawl/index optical drives.  Do any of the
windows people out there know how I can determine:

1. How many drives are on the system?  (I could just iterate over the
alphabet os.path.exists("%s:\\"%letter) ... is there a "windows" way of
doing it?)

2. More importantly for those drives that exist, how do I determine if
it is actually a harddrive?

thanks

matt



From gabor at nekomancer.net  Mon May 30 08:28:11 2005
From: gabor at nekomancer.net (gabor)
Date: Mon, 30 May 2005 14:28:11 +0200
Subject: write to the same file from multiple processes at the same time?
In-Reply-To: <b4df2$429ad977$3eb01f24$10471@news.flashnewsgroups.com>
References: <mailman.207.1117233035.18027.python-list@python.org>
	<b4df2$429ad977$3eb01f24$10471@news.flashnewsgroups.com>
Message-ID: <32e45$429b073a$3eb01f24$23675@news.flashnewsgroups.com>

gabor wrote:
> Jp Calderone wrote:
> 
>> To briefly re-summarize, when you want to acquire a lock, attempt to 
>> create a directory with a well-known name.  When you are done with it, 
>> delete the directory.  This works across all platforms and filesystems 
>> likely to be encountered by a Python program.
> 
> 
> thanks...
> 
> but the problem now is that the cgi will have to wait for that directory 
>  to be gone, when he is invoked.. and i do not want to code that :)
> i'm too lazy..
> 
> so basically i want the code to TRY to write to the file, and WAIT if it 
>  is opened for write right now...
> 
> something like a mutex-synchronized block of the code...
> 
ok, i ended up with the following code:

def syncLog(filename,text):
     f = os.open(filename,os.O_WRONLY | os.O_APPEND)
     fcntl.flock(f,fcntl.LOCK_EX)
     os.write(f,text)
     #FIXME: what about releasing the lock?
     os.close(f)

it seems to do what i need ( the flock() call waits until he can get 
access).. i just don't know if i have to unlock() the file before i 
close it..


gabor


From mj at zopatista.com  Wed May  4 18:19:54 2005
From: mj at zopatista.com (Martijn Pieters)
Date: Thu, 05 May 2005 00:19:54 +0200
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <9Ibee.81433$AX1.5235770@phobos.telenet-ops.be>
References: <d4u60o$akh$1@news2.netvision.net.il>	<mailman.47.1114818531.14961.python-list@python.org>	<1114924100.296223.114020@g14g2000cwa.googlegroups.com>	<1114927892.321086.60190@z14g2000cwz.googlegroups.com>	<zX%ce.78213$ft1.5056576@phobos.telenet-ops.be>	<Zj2de.78345$a42.5091422@phobos.telenet-ops.be>	<8764y29x3m.fsf@uwo.ca>	<877jihc7qv.fsf@uwo.ca>	<mailman.18.1115242075.29826.python-list@python.org>
	<9Ibee.81433$AX1.5235770@phobos.telenet-ops.be>
Message-ID: <42794A8A.6040402@zopatista.com>

Roel Schroeven wrote:
> You don't really need the remember the solution; it's more the process
> that led you to find the solution.

Yup, I do remember the process, and it hasn't been any help so far.. no
adjustable URLs leading to interesting files, no 'dealable' images, no nada.

Martijn Pieters

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From hancock at anansispaceworks.com  Wed May 11 12:01:16 2005
From: hancock at anansispaceworks.com (Terry Hancock)
Date: Wed, 11 May 2005 11:01:16 -0500
Subject: Python Args By Reference
In-Reply-To: <IPqdnexVeJOhkR_fRVn-1w@powergate.ca>
References: <1115769308.136143.74080@f14g2000cwb.googlegroups.com>
	<roy-385EA3.06423911052005@reader1.panix.com>
	<IPqdnexVeJOhkR_fRVn-1w@powergate.ca>
Message-ID: <200505111101.16735.hancock@anansispaceworks.com>

On Wednesday 11 May 2005 08:43 am, Peter Hansen wrote:
> Roy Smith wrote:
> > The most common immutable objects you'll see are strings and tuples, and 
> > the main reason they're immutable is to allow them to be dict keys.
> 
> And ints.  Strings, tuples and ints are the *three* most common 
> immutable objects you'll see...

And floats.  Floats, strings, tuples, and ints art the *four* most common
immutable objects you'll see...

Time to break out the comfy chair. ;-)
--
Terry Hancock ( hancock at anansispaceworks.com )
Anansi Spaceworks  http://www.anansispaceworks.com



From flyaflya at gmail.com  Tue May 10 10:59:07 2005
From: flyaflya at gmail.com (flyaflya)
Date: Tue, 10 May 2005 22:59:07 +0800
Subject: why this happend using model random?
In-Reply-To: <d5q707$lg3$1@news.yaako.com>
References: <d5q0ro$5lb$1@news.yaako.com>
	<mailman.271.1115720549.29826.python-list@python.org>
	<d5q707$lg3$1@news.yaako.com>
Message-ID: <d5qi7v$sr4$1@news.yaako.com>

flyaflya wrote:
> Robert Kern wrote:
> 
>> flyaflya wrote:
>>
>>> from random import *
>>>
>>> col = [0 for i in range(10)]
>>> a = [col for  i in range(10)]
>>
>>
>>
>> This is the problem. The list "a" now has ten references to the same 
>> object "col". They are not copied.
>>
>>> seed()
>>> for i  in range(10):
>>>      for j in  range(10):
>>>          a[i][j] = randint(0, 100)
>>
>>
>>
>> So every time you index into "a[i][j]" you are always getting "col[j]".
>>
> thanks,I see,I know about reference and copy,but when is it a copy?when 
> a reference?how can I get a copy when need?
I find the answer on <cook book> chapter4.5,it's a practical book for 
the newbies like me,maybe many newbie using c/c++ would make such mistake


From dieter at handshake.de  Fri May  6 14:15:20 2005
From: dieter at handshake.de (Dieter Maurer)
Date: 06 May 2005 20:15:20 +0200
Subject: Tons of stats/opens to non-existing files increases Python's
	startupon loaded NFS servers
References: <20050505211519.52192.qmail@web60008.mail.yahoo.com>
	<mailman.77.1115332412.29826.python-list@python.org>
Message-ID: <x78y2sxltz.fsf@handshake.de>

"Fredrik Lundh" <fredrik at pythonware.com> writes on Fri, 6 May 2005 00:08:36 +0200:
> > ... lots of "no such file or directory ...
> > Whoa!! After looking at what is being stat'd or
> > open'd, it looks like 'encodings' is new in 2.4 and,
> > even "worse", everything is looked for as a zip first.
> 
> so why not build that ZIP?

We, too, saw this problem -- and we had the "*.zip" files already...

Python is a bit stupid in its import logic.
When, e.g., a package "P" defined in a zip archive "zzz.zip"
contains an "import os", then Python checks whether
"zzz.zip" contains "P.os" (that is okay). *But*, usually
"zzz.zip" does not define "P.os" (as "os" is a builtin module)
and then Python checks in the file system
for "zzz.zip/P/os{,.py,pyc,.so,} and "zzz.zip/P/osmodule.so".
Of course, all of them fail as "zzz.zip" is a Zip archive
and "zzz.zip/something" is not meaningfull as a file system reference.

I improved on this by patching Python's "import.c" with the
attached patch. The patch implements that a "path_hook"
declaring itself to be responsible for a path is authoritative
for both negative as well as positive "find_module" responses.
Earlier, a negative "find_module" response caused Python to
try the default module lookup.


Furthermore, it is vital that your "sys.path" is as small as possible
because a single module lookup can cause file system lookups
in the order of 4 times the number of path elements. 

The standard extension of "sys.path" often contains far more
path elements than necessary (if you defined "python24.zip", you
should remove all other python library directories that do not contain
shared objects).

Dieter

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From mwm at mired.org  Thu May 12 18:25:56 2005
From: mwm at mired.org (Mike Meyer)
Date: Thu, 12 May 2005 17:25:56 -0500
Subject: pyvm -- faster python
References: <mailman.164.1115548611.29826.python-list@python.org>
	<1115561483.741761.212140@f14g2000cwb.googlegroups.com>
	<m102l2-9qr.ln1@home.rogerbinns.com>
	<mailman.264.1115716603.29826.python-list@python.org>
	<vu38l2-k5v.ln1@home.rogerbinns.com>
	<7xvf5qbir1.fsf@ruckus.brouhaha.com>
	<nt98l2-1e.ln1@home.rogerbinns.com>
	<7xpsvymlse.fsf@ruckus.brouhaha.com>
	<1115791624.856252.247890@z14g2000cwz.googlegroups.com>
	<7x1x8el18e.fsf@ruckus.brouhaha.com> <3eg2vnF2psplU1@individual.net>
	<7xis1pqdt0.fsf@ruckus.brouhaha.com>
	<pan.2005.05.12.15.53.10.176970@dalkescientific.com>
	<7xbr7g8cni.fsf@ruckus.brouhaha.com>
Message-ID: <86y8akgjyj.fsf@guru.mired.org>

Paul Rubin <http://phr.cx at NOSPAM.invalid> writes:

> Andrew Dalke <dalke at dalkescientific.com> writes:
>
>> Years ago, presented at one of the Python conferences, was a program
>> to generate C code from the byte code....  The conclusion I recall
>> was that it wasn't faster - at best a few percent - and there was a
>> big memory hit because of all the duplicated code.  One thought was
>> that the cache miss caused some of the performance problems.  Does
>> that count as a compiler?
>
> I would say it counts as a compiler and that other languages have
> used a similar compilation approach and gotten much better speedups.
> For example, Java JIT compilers.  The DEC Scheme-to-C translator
> and Kyoto Common Lisp also produced C output from their compilers
> and got really significant speedups.  Part of the problem may be
> with the actual Python language.

The DEC Scheme->C compiler (yes, it was an honest to gods compiler -
it just generated C instead of machine code) doesn't sound very
similar to generating C code from byte code. The latter sounds like a
straightforward translation of byte code to C.  The Scheme->C
compiler, on the other hand, used all the optimizations known to LISP
compiler writers. It would, with the right settings, produce code that
was comparable to hand-coded C. So unless the Python compiler that
produced the byte code in the first place does all those optimizations
(which I don't know), you're not going to get results that compare
with the Scheme->C system.

> Despite the shrieks of the "Python is not Lisp!" crowd, Python
> semantics and Lisp semantics aren't THAT different, and yet compiled
> Lisp implementations com completely beat the pants off of interpreted
> Python in terms of performance.  I don't think Python can ever beat
> carefully coded C for running speed, but it can and should aim for
> parity with compiled Lisp.

There are people out there who claim that compiling carefully coded
LISP can compete with compiling carefully coded C. They use such
systems in real-world, time-critical applications. The thing is, to
get that performance, they had to go back and tell the compiler what
the types of all the variables are, and disable all the runtime type
checking.

So if this is a real goal, you now have some idea of what to look
forward to in Python's future.

        <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From no-mail-please at nospam.com  Sun May  1 13:32:43 2005
From: no-mail-please at nospam.com (Robert Oschler)
Date: Sun, 1 May 2005 13:32:43 -0400
Subject: compare two voices
References: <1114916457.795332.45220@f14g2000cwb.googlegroups.com>
Message-ID: <9rSdnWJ8Fer3jOjfRVn-tw@adelphia.com>


"Qiangning Hong" <hongqn at gmail.com> wrote in message
news:1114916457.795332.45220 at f14g2000cwb.googlegroups.com...
> I want to make an app to help students study foreign language.  I want
> the following function in it:
>
> The student reads a piece of text to the microphone. The software
> records it and compares it to the wave-file pre-recorded by the
> teacher, and gives out a score to indicate the similarity between them.
>
> This function will help the students pronounce properly, I think.
>
> Is there an existing library (C or Python) to do this?  Or if someone
> can guide me to a ready-to-implement algorithm?
>

How about another approach?

All modern speech recognition systems employ a phonetic alphabet.  It's how
you describe to the speech recognition engine exactly how the word sounds.

For each sentence read, you create a small recognition context that includes
the sentence itself, AND subtle variations of the sentence phonetically.

For example (using English):

You want them to say correctly: "The weather is good today".

You create a context with the following phrases which include the original
sentence, and then alternative sentences that dithers (varies) the original
sentence phonetically.  Sample context:

(*) The weather is good today
Da wedder is god tuday
The weether is good towday

Etc.

Then submit the context to the speech recognition engine and ask the user to
say the sentences.  If the original sentence (*) comes back as the speech
recognition engine's best choice, then they said it right.  If one of the
other choices comes back, then they made a mistake.

You could even "grade" their performance by tagging the variations by
closeness to the original, for example:

(*) The weather is good today (100)
Da wedder is god tuday (80)
Ta wegger es gid towday (50)

In the example above, the original sentence gets a 100, the second choice
which is close gets an 80, and the last option which is pretty bad gets  50.
With a little effort you could automatically create the "dithered" phonetic
variations and auto-calculate the score or closeness to original too.

Thanks,
Robert
http://www.robodance.com
Robosapien Dance Machine - SourceForge project





From pinard at iro.umontreal.ca  Wed May  4 09:02:49 2005
From: pinard at iro.umontreal.ca (=?iso-8859-1?Q?Fran=E7ois?= Pinard)
Date: Wed, 4 May 2005 09:02:49 -0400
Subject: How To Reply
In-Reply-To: <maednQbrx_hYL-XfRVn-hA@powergate.ca>
References: <mailman.141.1115192187.6583.python-list@python.org>
	<maednQbrx_hYL-XfRVn-hA@powergate.ca>
Message-ID: <20050504130249.GA1264@alcyon.progiciels-bpi.ca>

[Peter Hansen]

> You are forced to cut and paste if you want to get the messages in a 
> digest.  I doubt any mail program has been designed to know how to do 
> anything smarter,

Lars Magne Ingebrigtsen's wonderful Gnus (a much boosted, combined
news/mail reader, running within or over Emacs) knows about digests.

(Moreover, with not so much trickery, it is Python extensible.  I
vaguely remember having written one or two Python backends for Gnus.)

-- 
Fran?ois Pinard   http://pinard.progiciels-bpi.ca


From duncan.booth at invalid.invalid  Fri May 27 11:32:47 2005
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 27 May 2005 15:32:47 GMT
Subject: Case Sensitive, Multiline Comments
References: <1117137316.140791.210430@g14g2000cwa.googlegroups.com>
	<8664x5y92g.fsf@guru.mired.org> <429654DA.9050903@lexicon.net>
	<1117154013.092736.298310@g14g2000cwa.googlegroups.com>
	<qc7d9112aqr5tj8devjeaign84dc21ti8p@4ax.com>
	<Xns96635F84E6901duncanbooth@127.0.0.1>
	<119eccdgjtaru5d@news.supernews.com>
Message-ID: <Xns9663A707DDEF9duncanbooth@127.0.0.1>

John Roth wrote:

> Doing case translations in Unicode following all of
> the rules for all of the world's languages is, for want of a better
> world, a real bitch. 
> 

Fair point, although that is true for anything, not just case translations.
Fortunately, unlike Ecmascript, Python doesn't allow arbitrary unicode 
characters in identifiers.


From cal_2pac at yahoo.com  Fri May 20 11:57:35 2005
From: cal_2pac at yahoo.com (cal_2pac at yahoo.com)
Date: 20 May 2005 08:57:35 -0700
Subject: How to receive events (eg. user mouse clicks) from IE
In-Reply-To: <428d0e75$1_2@spool9-west.superfeed.net>
References: <1116476411.853695.235670@g14g2000cwa.googlegroups.com>
	<428c3cbe$1_1@spool9-west.superfeed.net>
	<1116529345.146032.91880@f14g2000cwb.googlegroups.com>
	<428cf5a9$1_1@spool9-west.superfeed.net>
	<1116537405.495521.252570@f14g2000cwb.googlegroups.com>
	<428d0e75$1_2@spool9-west.superfeed.net>
Message-ID: <1116604655.431664.261430@g49g2000cwa.googlegroups.com>

Thanks for the response again. The solution is pretty close but not yet
complete
This is what I observed.
a) I tried to use the delay mechanism as suggested below
ie.
ie.Navigate('www.google.com')
while ie.ReadyState !- 4
       time.sleep(0.5)

d=win32com.client.DispatchWithEvents(ie.Document, Doc_Events)

IE *fails* to load the webpage

b) Then I changed the delay to a specified time interval eg
ie.Navigate('www.google.com')
time.sleep(60) #wait for a minute
d=win32com.client.DispatchWithEvents(ie.Document, Doc_Events)

IE loads the web page *after* 60 seconds

c) Then I used raw_input() eg
ie.Navigate('www.google.com')
raw_input()
d=win32com.client.DispatchWithEvents(ie.Document, Doc_Events)
IE now loads the webpage and prompts the user. If I click on the web
page *before* clicking ok on the raw_input prompt - then it correctly
invokes the Doc_Events method Ononactivate method.

>From these observations, it seems that there is some kind of a race
condition / timing issue happening. Can you please comment (or maybe
point me to other sources of info that I can investigate).
I am running Python 2.3 on Windows 2k machine.

Roger Upole wrote:
> Usually you get that error if you try to access the Document object
> before the page has loaded.  Try adding a delay after ie.Navigate,
> something like
>
> while ie.ReadyState<>4:
>     time.sleep(0.5)
> There are some constants that show up in win32com.client.constants
> that represent the ReadyState's, but I can't remember the names
offhand.
>
> The only real reference for the Html objects (other than reading the
> generated module) is MSDN.  Google turned this up:
>
http://msdn.microsoft.com/library/default.asp?url=/workshop/browser/mshtml/reference/events/htmlanchorevents/htmlanchorevents.asp
>
>            Roger
>
>
> <cal_2pac at yahoo.com> wrote in message
> news:1116537405.495521.252570 at f14g2000cwb.googlegroups.com...
> > Thanks for your prompt responses and the code.
> > However, when I run the code I get com error
> > d=win32com.client.DispatchWithEvents(ie.Document, Doc_Events)
> >  File "C:\Python23\lib\site-packages\win32com\client\__init__.py",
> > line 199, in __getattr__
> >    return getattr(self._obj_, attr)
> >  File "C:\Python23\lib\site-packages\win32com\client\__init__.py",
> > line 455, in __getattr__
> >    return self._ApplyTypes_(*args)
> >  File "C:\Python23\lib\site-packages\win32com\client\__init__.py",
> > line 446, in _ApplyTypes_
> >    return self._get_good_object_(
> > com_error: (-2147352567, 'Exception occurred.', (0, None, None,
None,
> > 0, -2147467259), None)
> >
> > I am a newbie to python(started coding a few months ago).
> > This appears to be a fairly common error when COM objects are not
> > hooked up properly. Though I have not been able to find a solution
or
> > the reason for this.
> > Thanks again for the explanation.All the information that I had
> > acquired now seems to fall into place. I was not aware about
> > doc_mod.HTMLAnchorEvents. Where can I find more documentation about
> > this?
> >
> > Roger Upole wrote:
> >> Here's a few more lines that hook the document's onactivate event.
> >>
> >> import win32com.client
> >>
> >>
> >
ie_mod=win32com.client.gencache.EnsureModule('{EAB22AC0-30C1-11CF-A7EB-0000C05BAE0B}'
> >
> >> ,0, 1, 1)
> >>
> >
doc_mod=win32com.client.gencache.EnsureModule('{3050F1C5-98B5-11CF-BB82-00AA00BDCE0B}'
> >
> >> ,0 ,4, 0)
> >> class IE_Events(ie_mod.DWebBrowserEvents2):
> >>     def OnNavigateComplete2(self, pDisp, URL):
> >>         print 'OnNavigateComplete2:', URL
> >>
> >> class Doc_Events(doc_mod.HTMLAnchorEvents):
> >>     def Ononactivate(self):
> >>         print 'onactivate', self.activeElement.outerHTML
> >>
> >>
> >
ie=win32com.client.DispatchWithEvents('InternetExplorer.Application',IE_Events)
> >> ie.Visible=1
> >> ie.Navigate('http://www.google.com')
> >>
> >> d=win32com.client.DispatchWithEvents(ie.Document, Doc_Events)
> >>
> >>     Roger
> >>
> >>
> >> <cal_2pac at yahoo.com> wrote in message
> >> news:1116529345.146032.91880 at f14g2000cwb.googlegroups.com...
> >> > Hi
> >> > Thanks for the response and for the code.
> >> > However, I want to trap events like mouse click on the HTML
> > document
> >> > loaded by the web browser control. The code mentioned below
> > provides
> >> > events from the web browser control. I need to find out on which
> >> > particular HTML tag did the user click for example.
> >> > How do I find that out? There should be some way to refer to a
> > document
> >> > from a given web browser control and start receiving events from
it
> >> >
> >> >
> >> > Roger Upole wrote:
> >> >> The two you'll need to run makepy for are Microsoft Internet
> > Controls
> >> > and
> >> >> Microsoft HTML object Library.  If you run them manually, you
> > should
> >> > be
> >> >> able to look at the generated code to get the guids.
> >> >> Here's a minimal example:
> >> >>
> >> >> import win32com.client
> >> >>
> >> >>
> >> >
> >
ie_mod=win32com.client.gencache.EnsureModule('{EAB22AC0-30C1-11CF-A7EB-0000C05BAE0B}',0,
> >> >
> >> >> 1, 1)
> >> >> class IE_Events(ie_mod.DWebBrowserEvents2):
> >> >>     def OnNavigateComplete2(self, pDisp, URL):
> >> >>         print 'OnNavigateComplete2:', URL
> >> >>
> >> >>
> >> >
> >
ie=win32com.client.DispatchWithEvents('InternetExplorer.Application',IE_Events)
> >> >> ie.Visible=1
> >> >> ie.Navigate('http://www.google.com')
> >> >>
> >> >>    hth
> >> >>       Roger
> >> >>
> >> >>
> >> >> <cal_2pac at yahoo.com> wrote in message
> >> >> news:1116476411.853695.235670 at g14g2000cwa.googlegroups.com...
> >> >> >I am trying to trap events from internet explorer eg. when
user
> >> > clicks
> >> >> > on an html link - I need to get notified for that event.
> >> >> >
> >> >> > After looking through the newgroups / internet and reading
> > through
> >> >> > various sections in programming python on win32 - I
understand
> > that
> >> >> > this can be done using DispatchWithEvents.
> >> >> > I have also referred to discussions on comp.lang.python
> >> >> >
> >> >
> >
http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/a3c502d06412a5f8/0ee3083e71316da7?q=dispatchwithevents&rnum=43#0ee3083e71316da7
> >> >> >
> >> >> > and
> >> >> >
> >> >> >
> >> >
> >
http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/1da0668794851296/5bcec1fda216c598?q=dispatchwithevents&rnum=19#5bcec1fda216c598
> >> >> >
> >> >> > So far - none of the newgroups postings report that IE events
> > were
> >> >> > trapped successfully (at least I could not find any).
However,
> >> > there is
> >> >> > enough evidence that it can be done.
> >> >> > My problems at the moment:
> >> >> > a) The examples use early binding. However, I cannot get
Python
> >> > makepy
> >> >> > to generate the code to force makepy process at run time -
since
> >> > COM
> >> >> > makepy utility that I invoke from python win 32 does not have
> > any
> >> > entry
> >> >> > for internet explorer.
> >> >> > I tried to find the CLSID for IE
> >> > 3050F613-98B5-11CF-BB82-00AA00BDCE0B
> >> >> > but I get an exception
> >> >> > b) Also one of the examples suggest that following code
should
> > work
> >> >> >
> >> >> >> mod = EnsureModule(...)
> >> >> >
> >> >> >> class MyEvents(mod.IDocumentEvents):
> >> >> >>    # your methods here....
> >> >> >
> >> >> >> handler = MyEvents(ie.document)
> >> >> >
> >> >> >> # handler should start recieving events.
> >> >> >
> >> >> > however, what CLSID is to be used in EnsureModule... . I
tried
> > with
> >> > a
> >> >> > few but I always get the error 'NoneType' object has no
> > attribute
> >> >> > 'IDocumentEvents'
> >> >> >
> >> >> >
> >> >> > An example that 'works' will be very useful
> >> >> >
> >> >>
> >> >>
> >> >>
> >> >> ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure
> > Usenet
> >> > News==----
> >> >> http://www.newsfeeds.com The #1 Newsgroup Service in the World!
> >> > 120,000+ Newsgroups
> >> >> ----= East and West-Coast Server Farms - Total Privacy via
> > Encryption
> >> > =----
> >> >
> >>
> >>
> >>
> >>
> >> ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure
Usenet
> > News==----
> >> http://www.newsfeeds.com The #1 Newsgroup Service in the World!
> >>100,000 Newsgroups
> >> ---= East/West-Coast Server Farms - Total Privacy via Encryption
=---
> >
>
>
>
> ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet
News==----
> http://www.newsfeeds.com The #1 Newsgroup Service in the World!
120,000+ Newsgroups
> ----= East and West-Coast Server Farms - Total Privacy via Encryption
=----



From mbbx6spp at gmail.com  Fri May 27 13:44:01 2005
From: mbbx6spp at gmail.com (mbbx6spp at gmail.com)
Date: 27 May 2005 10:44:01 -0700
Subject: Does Python have a Template::Extract equivalent from Perl's CPAN
Message-ID: <1117215841.123847.234300@o13g2000cwo.googlegroups.com>

Hi All,

I already searched this newsgroup and google groups to see if I could
find a Python equivalent to Perl's Template::Extract, but didn't find
anything leading to a Python module that had similar functionality.  I
am a big fan of Python as an OO language and use it for many system
admin utilities, webdev and even MS Excel AddIn development, but I have
found that Perl's Template::Extract is so invaluable to my web scraping
utilities that I can not migrate this very old code base over to Python
yet since there is nothing that I can easily port it over to without
making my web scrapers very brittle to website redesigns.  I while I
think Perl is a wonderful language in its own right I would rather just
code more of my codebase in Python than Perl to make my coding more
efficient.

If anyone knows of a Python module that has the same features of
Template::Extract please let me (and maybe the group) know.  If nobody
is not aware of any module, I would be interested in developing one for
the Python public.  Please let me know if anyone else is interested and
I can setup a sf.net project to get this rolling (unless anyone knows
of an sf.net like website that offers Subversion instead of CVS?).

Thanks!



From vinay_sajip at yahoo.co.uk  Tue May 17 02:02:35 2005
From: vinay_sajip at yahoo.co.uk (Vinay Sajip)
Date: Tue, 17 May 2005 06:02:35 +0000 (UTC)
Subject: RotatingFileHandler in Python 2.3.5
References: <bccb8928050516182114fa90b8@mail.gmail.com>
Message-ID: <loom.20050517T080004-616@post.gmane.org>

new pip <newpip <at> gmail.com> writes:

> 
> Is the RotatingFileHandler (from the logging module) available in
> Python 2.3.5? I'm getting a "AttributeError: 'module' object has no
> attribute 'RotatingFileHandler'" error message when trying to use it.

The handler is in the logging.handlers module, not in the logging module 
itself. If you are using a configuration file, 
use "handlers.RotatingFileHandler" rather than just "RotatingFileHandler".

Vinay Sajip



From tzot at sil-tec.gr  Fri May 27 05:52:30 2005
From: tzot at sil-tec.gr (Christos TZOTZIOY Georgiou)
Date: Fri, 27 May 2005 12:52:30 +0300
Subject: Encryption with Python?
References: <1115324411.952821.150780@o13g2000cwo.googlegroups.com>
	<001301c552db$dd19d3e0$0201a8c0@mcuf7> <d5i0as$ejd$1@sea.gmane.org>
	<mailman.134.1115466844.29826.python-list@python.org>
	<6vh881d59bbecnc45fojknt0rohgt27crl@4ax.com>
	<mailman.44.1116922739.18027.python-list@python.org>
	<t9fc91hgqlbog568vt2qv0vgcuv4ofbhcl@4ax.com>
	<7xsm09br0n.fsf@ruckus.brouhaha.com>
Message-ID: <q1qd91ltno53edt1tiuusbpvie82s69hnh@4ax.com>

On 26 May 2005 14:45:28 -0700, rumours say that Paul Rubin
<http://phr.cx at NOSPAM.invalid> might have written:

>> That's all.  I see you took up the challenge and indirectly replied to
>> my last question, and in good spirit I say you earned a little respect
>> from me, at least for standing up to your words.  Now I hope no-one
>> gives a try to your data (for your own sake :)

>I don't think the challenge was really accepted.  The algorithm
>changed between when you issued the challenge, and when the sensitive
>data went up.  A good algorithm doesn't need to change depending on
>the data.  I agree with the poster who said that the strength of
>either one of the algorithms is irrelevant, if the keyspace is just 32
>bits.

You are correct; the algorithm changed, and the OP admitted it himself
in the post with the encrypted credit card data.

However, on a practical level: before posting, I did a quick comparison,
and the only effective change to OP's algorithm was a the addition of a
`random.shuffle(sequence)', which AFAIU has no practical consequences as
to whether his algorithm is unbreakable or not.

I could say that "hey, you changed the algorithm, and that means your
previous declaration of unbreakability wasn't." but honestly I was
overwhelmed by the audacity (and foolishness, if these are truly his
credit card data) of Frederic.



ObSF: DNA; The Restaurant At The End Of The Universe; Marvin the
paranoid android faces a gigantic black tank in the H2G2 HQ.
-- 
TZOTZIOY, I speak England very best.
"Be strict when sending and tolerant when receiving." (from RFC1958)
I really should keep that in mind when talking with people, actually...


From sakesun at boonthavorn.com  Mon May  9 02:15:41 2005
From: sakesun at boonthavorn.com (Sakesun Roykiattisak)
Date: Mon, 09 May 2005 13:15:41 +0700
Subject: Fredrik Lundh
In-Reply-To: <h9qdneSvU71kZuPfRVn-rw@comcast.com>
References: <mailman.139.1115189526.6583.python-list@python.org><maednQfrx_iwL-XfRVn-hA@powergate.ca>	<Av-dnbF5u_SOpOffRVn-vQ@comcast.com>	<mailman.66.1115324909.29826.python-list@python.org>	<k42dnWFaUMRQeePfRVn-pg@comcast.com>	<mailman.188.1115614698.29826.python-list@python.org>
	<h9qdneSvU71kZuPfRVn-rw@comcast.com>
Message-ID: <427F000D.2020103@boonthavorn.com>


>google for logix site:pythonware.com  He's announced plenty non-python 
>stuff that is of interest to python users, including plenty of marketing 
>for his own software.
>  
>

IMHO, Pythonware.com does not have to be about python. It can be 
anything the maintainer want it to be.

Get the point ?

BTW, I'm one of  python users who is NOT INTERESTED in BOOO. And prefer 
Daily-python to stay what it is.



From http  Fri May 27 18:10:16 2005
From: http (Paul Rubin)
Date: 27 May 2005 15:10:16 -0700
Subject: write to the same file from multiple processes at the same time?
References: <mailman.175.1117200711.18027.python-list@python.org>
	<7x1x7siy3b.fsf@ruckus.brouhaha.com>
	<LdOdnf5kluybBwrfRVn-2Q@powergate.ca>
Message-ID: <7xacmgnwvr.fsf@ruckus.brouhaha.com>

Peter Hansen <peter at engcorp.com> writes:
> And PySQLite conveniently wraps the relevant calls with retries when
> the database is "locked" by the writing process, making it roughly a
> no-brainer to use SQLite databases as nice simple log files where
> you're trying to write from multiple CGI processes like the OP wanted.

Oh, ok.  But what kind of locks does it use?  


From utabintarbo at gmail.com  Sat May  7 11:55:54 2005
From: utabintarbo at gmail.com (utabintarbo at gmail.com)
Date: 7 May 2005 08:55:54 -0700
Subject: globbing multiple wildcards
In-Reply-To: <p15fe.4173$5I5.437956@newshog.newsread.com>
References: <1115477662.937084.260270@g14g2000cwa.googlegroups.com>
	<p15fe.4173$5I5.437956@newshog.newsread.com>
Message-ID: <1115481354.357281.240920@g14g2000cwa.googlegroups.com>

OK, I guess it WAS that easy. :-P

Thanks for the replys.

Bob



From gvanrossum at gmail.com  Mon May  2 13:25:55 2005
From: gvanrossum at gmail.com (Guido van Rossum)
Date: Mon, 2 May 2005 10:25:55 -0700
Subject: How to kill a SocketServer?
In-Reply-To: <17014.21449.421677.445431@montanaro.dyndns.org>
References: <7xwtqj1lh1.fsf@ruckus.brouhaha.com>
	<mailman.83.1114972348.14961.python-list@python.org>
	<7xpswa4wfu.fsf@ruckus.brouhaha.com>
	<17013.25972.965219.254879@montanaro.dyndns.org>
	<mailman.5.1114997245.6583.python-list@python.org>
	<7xekcq75av.fsf@ruckus.brouhaha.com>
	<1115046280.413931.16970@g14g2000cwa.googlegroups.com>
	<17014.21449.421677.445431@montanaro.dyndns.org>
Message-ID: <ca471dc205050210251ba3be09@mail.gmail.com>

[Skip Montanaro]

> I stumbled on a somewhat cleaner way to do this using socket timeouts:
> 
>     class Server(SocketServer.ThreadingMixIn, SocketServer.TCPServer):
>         pause = 0.25
>         allow_reuse_address = True
> 
>         def __init__(self, server_address, RequestHandlerClass):
>             SocketServer.TCPServer.__init__(self, server_address,
>                                             RequestHandlerClass)
>             self.socket.settimeout(self.pause)
>             self.serving = 1
>             ...
> 
>         def serve_forever(self):
>             while self.serving:
>                 self.handle_request()
> 
> As far as my simple testing went (a trivial little xmlrpc server exposing
> only "noop" and "exit" methods), the above worked fine.  I was mildly
> surprised that I didn't have to catch socket.timeout exceptions.

I think this would cause timeouts in the middle of handling request
whenever a client is slow.

-- 
--Guido van Rossum (home page: http://www.python.org/~guido/)


From piet at cs.uu.nl  Mon May 23 05:40:44 2005
From: piet at cs.uu.nl (Piet van Oostrum)
Date: Mon, 23 May 2005 11:40:44 +0200
Subject: Python on a public library computer
In-Reply-To: <1116592130.314355.202930@g44g2000cwa.googlegroups.com> (Anton
	Vredegoor's message of "20 May 2005 05:28:50 -0700")
References: <1116069664.779281.320540@g47g2000cwa.googlegroups.com>
	<87r7g6rbz0.fsf@pobox.com>
	<mailman.67.1116286093.8733.python-list@python.org>
	<1116330665.197293.198950@o13g2000cwo.googlegroups.com>
	<861x858qav.fsf@guru.mired.org>
	<1116417677.506240.261730@g47g2000cwa.googlegroups.com>
	<1116464373.016279.13030@f14g2000cwb.googlegroups.com>
	<1116592130.314355.202930@g44g2000cwa.googlegroups.com>
Message-ID: <wz3bsei8kj.fsf@ordesa.cs.uu.nl>

There are several ssh and telnet applets on the web. Of course it depends
on the Java support in your IE.
-- 
Piet van Oostrum <piet at cs.uu.nl>
URL: http://www.cs.uu.nl/~piet [PGP]
Private email: piet at vanoostrum.org


From martin at v.loewis.de  Fri May 20 12:20:09 2005
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Fri, 20 May 2005 18:20:09 +0200
Subject: circular imports
In-Reply-To: <1116599898.308012.71220@g47g2000cwa.googlegroups.com>
References: <1116599898.308012.71220@g47g2000cwa.googlegroups.com>
Message-ID: <428e0e3a$0$26404$9b622d9e@news.freenet.de>

qhfgva at gmail.com wrote:
> So I thought I'd just add the necessary __init__.py files and then
> things would just work.  Unfortunately trying this exposed a large
> number of circular imports which now cause the files to fail to load.

You didn't describe you you created the necessary __init__.py files.
If they are not empty, there is a good chance that you made some
error in creating these files.

What is the error that you get with the circular imports?

> Any ideas why the sys.path.append method has no problem with circular
> imports whereas doing thing the "right way" chokes.

One reason is that there could be duplicate module names, e.g. overlaps
with the standard library. When you fully-qualified the modules, you
actually changed the program, which would now import the user-provided
modules instead of the predefined ones.

Regards,
Martin


From asmir.mehic at gmail.com  Wed May 11 04:38:46 2005
From: asmir.mehic at gmail.com (asmir.mehic at gmail.com)
Date: 11 May 2005 01:38:46 -0700
Subject: A Faster Way...
In-Reply-To: <pan.2005.05.10.17.36.26.151613@dalkescientific.com>
References: <mailman.297.1115744017.29826.python-list@python.org>
	<pan.2005.05.10.17.36.26.151613@dalkescientific.com>
Message-ID: <1115800725.970214.299160@g43g2000cwa.googlegroups.com>

For efficient string concatenation in python look at:
http://www.skymind.com/~ocrow/python_string



From newsgroups at jhrothjr.com  Fri May 27 15:17:43 2005
From: newsgroups at jhrothjr.com (John Roth)
Date: Fri, 27 May 2005 13:17:43 -0600
Subject: distutils, 'scripts' and Windows
References: <d77ml7$cus$1$8300dec7@news.demon.co.uk>
Message-ID: <119esir5c2l2923@news.supernews.com>

"George van den Driessche" <grebe at bigfoot.com> wrote in message 
news:d77ml7$cus$1$8300dec7 at news.demon.co.uk...
> Hi folks,
>
> I'm looking at packaging a project I'm working on using distutils. The 
> project is for Windows and contains a COM server which needs registration, 
> so the installer needs to be a little more complicated than usual. Looking 
> at the options for the bdist_wininst command to distutils, I see it's 
> possible to specify
>  --install-script=<myinstallscript>
> which ought to do the trick. But to use this, myinstallscript itself must 
> first be installed by passing
>  scripts='myinstallscript'
> to distutils.core.setup in setup.py. That will copy myinstallscript into a 
> particular location (C:\Python24\Scripts in my case) and leave it there 
> forever. Which raises a couple of questions:
>
> - Why is myinstallscript left there forever? The documentation makes some 
> vague reference to needing it for uninstalling packages, but then I can't 
> actually find a way to uninstall packages.
>
> - What is the use of the Scripts directory on Windows? It's not added to 
> my PATH, so unless I do that myself it won't do anything like it's meant 
> to on other platforms.
>
> - Should I supply myinstallscript, or myinstallscript.py? I suspect the 
> latter, since that's the only way to give files types on Windows.
>
> - Is there some other better way to perform post-installation actions? 
> Would it work out of a binary generated from bdist_wininst?

What I found, thanks to Martin Fuzzey, is that if you assign the result
of the setup() function to a variable, you can access all sorts of
interesting stuff after setup() completes. You need to do some
source reading, but it's quite instructive.

Also, if you check the parms after setup completes for "install" or
whatever other subcommand you're using to install the stuff, you
can then do pretty much whatever you want without having to
have another script. I convert line endings on all of my scripts
manually since distutils doesn't seem to do it. I should also
convert line endings on the documentation. Sigh.

> - Should I even be using distutils? It doesn't really matter that much 
> where the files are installed because the COM server can register itself 
> to run out of whatever location it happens to be in.

I personally find distutils to be an absurd fit for my application
(PyFit). It does way more than I need, and doesn't do a lot of
other stuff that I need, and makes lots of assumptions about file
locations that are simply, um, well ...

Unfortunately, it's also the standard installation engine, so there's
no getting around it if you want to be consistent with what everyone
else is doing and future enhancements to the installation process
through the Python Package Index, eggs and a lot of other
stuff that's coming down the pike.

John Roth

>
> Thanks,
> George
> 



From roccomoretti at hotpop.com  Fri May 13 10:26:51 2005
From: roccomoretti at hotpop.com (Rocco Moretti)
Date: Fri, 13 May 2005 09:26:51 -0500
Subject: Python Documentation (should be better?)
In-Reply-To: <428467b1$0$5860$626a14ce@news.free.fr>
References: <5C99C308457E6D4EA5448EA52A66004A675A6E@or.mxim.com>	<17026.26789.592527.975821@montanaro.dyndns.org>	<mailman.398.1115843305.29826.python-list@python.org>	<428276e8$0$318$626a14ce@news.free.fr>
	<mailman.411.1115854727.29826.python-list@python.org>
	<428467b1$0$5860$626a14ce@news.free.fr>
Message-ID: <d62df9$89b$1@news.doit.wisc.edu>

bruno modulix wrote:
> 
> I fail to see why would it would be better to have to open a browser, go 
> to python.org, go to the doc, find the right link etc instead of just 
> typing dir(xxx) and/or help(xxx).

Well, for those with Windows machines, the documentation is a simple 
Start->All Programs->Python->Python Manuals. I'm somewhat amused that 
the Docs don't come standard with other platforms. I guess they figure 
if you're compiling from source, you'd download them to the local 
machine separately.

That said, I have no clue if PHP provides a local copy of the docs. It 
seems doubtful, given how people have trumpeted the user-supplied 
comments aspect of the PHP docs.


From http  Sat May 21 00:42:10 2005
From: http (Paul Rubin)
Date: 20 May 2005 21:42:10 -0700
Subject: first release of PyPy
References: <mailman.264.1116625088.8733.python-list@python.org>
	<1116629407.638782.145950@g47g2000cwa.googlegroups.com>
	<1116644536.741250.249860@g44g2000cwa.googlegroups.com>
	<mailman.279.1116649250.8733.python-list@python.org>
Message-ID: <7xoeb5favx.fsf@ruckus.brouhaha.com>

Christian Tismer <tismer at stackless.com> writes:
> PyPy is just a completely new approach to interpreted languages,
> almost based upon known compiler technology, but applying this in a
> consequent manner, that has no comparable prior example.

Is there a web page describing what's new?  Compile-and-go interactive
languages have been around for decades.


From jonasmg at softhome.net  Wed May 18 06:25:07 2005
From: jonasmg at softhome.net (Jonas Melian)
Date: Wed, 18 May 2005 11:25:07 +0100
Subject: Python forum
In-Reply-To: <pan.2005.05.17.10.38.09.537008@gmx.at>
References: <mailman.84.1116320178.8733.python-list@python.org>
	<pan.2005.05.17.10.38.09.537008@gmx.at>
Message-ID: <428B1803.80509@softhome.net>

Markus Weihs wrote:
> 
> If you speak German, there is a forum at www.python-forum.de .
> There is also an english one at http://python-forum.org/py/index.php,
> but as you can see, there's not much traffic :-/
> 

There are few messages because they are not known. I believe that they
would be due to add in the resources of python.org


From admin at statcounter.com  Sat May 14 21:41:16 2005
From: admin at statcounter.com (admin at statcounter.com)
Date: Sun, 15 May 2005 01:41:16 UTC
Subject: Paranoider Deutschenmoerder kommt in Psychiatrie
Message-ID: <aec159b4e8.fd16887@python.org>

Lese selbst:
http://brandenburg.rz.fhtw-berlin.de/poetschke.html


From fperez.net at gmail.com  Wed May 11 17:27:25 2005
From: fperez.net at gmail.com (Fernando Perez)
Date: Wed, 11 May 2005 15:27:25 -0600
Subject: Python Graphing Utilities.
References: <-dadnS0X7IVccR3fRVn-uQ@entouch.net>
	<797fe3d405051010392c00011f@mail.gmail.com>
	<mailman.320.1115772826.29826.python-list@python.org>
	<87psvycqej.fsf@wilson.rwth-aachen.de>
	<mailman.387.1115835071.29826.python-list@python.org>
	<87mzr17flh.fsf@wilson.rwth-aachen.de>
Message-ID: <d5tsti$2c6$1@sea.gmane.org>

Torsten Bronger wrote:

> Hall?chen!
> 
> Fernando Perez <fperez.net at gmail.com> writes:
> 
>> [...]
>>
>> Well, it's true that the latex-type (called mathtext) support in
>> matplotlib is not really up to par with true latex (kerning is off
>> in places, mixed text/math doesn't work well, etc).  I've been
>> willing to live with it so far, but an alternative option is to
>> use the PS backend and then play psfrag tricks.
> 
> The problem is that mostly, you'll have a *lot* to substitute.
> 
>> I've yet to experiment with it, but it might (with some additional
>> handywork) give final results identical to those of the pslatex
>> backend in gnuplot.
> 
> What do you mean with this?  Do you want to mimic TeX's quality as a
> typesetter, or do you think the goal should be output in real LaTeX
> format (like pslatex does)?  The latter would be more useful in my
> opinion, and much easier, too.

Easier... psfrag tricks can be done right now, while full latex output requires
writing a new matplotlib backend.  It would certainly be a _great_ project,
but not one I'm about to undertake, while it's reasonable for me to use psfrag
to fix a few labels here and there to use proper latex.  So while I agree with
you that in the long run a latex backend would be ideal, as a stop-gap
solution I can live with psfrag.
 
>> [...]  But there are a number of things it simply can't offer due
>> to its design as a standalone program, which matplotlib (being a
>> library/widget collection) can do much better.  [...] I finally
>> made the switch and I'm extremely happy.
> 
> I'm not a fanatic Gnuplot user either.  I use it for 11 years, and I
> like exactly two things about it: its simplicity and the pslatex
> backend.  I think for my thesis I'll still use it, because its
> integration in a batch process that builds my thesis is much easier
> than to write Python programs.

well, unless your batch process _is_ in python :)  Mine was, so my
make_plots.py was a single script, which ironically (for this discussion) was
all gnuplot.py-based, since this was a few years ago.

Cheers,

f



From phillip.watts at anvilcom.com  Tue May  3 12:09:10 2005
From: phillip.watts at anvilcom.com (phil)
Date: Tue, 03 May 2005 11:09:10 -0500
Subject: How To Reply
Message-ID: <4277A226.9020403@anvilcom.com>

I get a digest several times a day.
When I wish to respond to an item I must
cut and paste the item and the subject line.
Is there something to click on for a simple reply?
Using an old mozilla mail.
Thanks



From rkern at ucsd.edu  Wed May 11 18:18:36 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Wed, 11 May 2005 15:18:36 -0700
Subject: Finding startup files
In-Reply-To: <200505111807.16833.jeffelkins@earthlink.net>
References: <mailman.375.1115827885.29826.python-list@python.org>	<1115829176.541687.22090@z14g2000cwz.googlegroups.com>	<1184dj36mp5sdc6@corp.supernews.com>
	<200505111807.16833.jeffelkins@earthlink.net>
Message-ID: <d5tvtj$v2q$1@sea.gmane.org>

jeff elkins wrote:
> On Wednesday 11 May 2005 04:44 pm, Grant Edwards wrote:
> 
>>On 2005-05-11, hemagician at gmail.com <hemagician at gmail.com> wrote:
>>
>>>The following script demonstrates a method that should work for you. I
>>>believe it is entirely cross-platform.
>>>
>>>#! /usr/bin/python
>>>
>>>import sys
>>>import os
>>>
>>>print os.path.abspath(os.path.dirname(sys.argv[0]))
>>
>>That will probably work most of the time, but...
>>
>> 1) you're not gauranteed that argv[0] contains the application
>>    path/filename.
>>
>> 2) the directory containing the executable is not where
>>    configuration files are supposed to be stored under
>>    Unix/Linux.
> 
> Thanks Grant,
> 
> I live and develop in Linux, but unfortunately, 99.99% of the users of this 
> particular application (analysis of medical laboratory data) will be working 
> with Windows. 
> 
> I'm totally new to Python (obvious,yes?) so how might argv[0] fail?

If I make a symbolic link to the executable script and run it using that 
link, sys.argv[0] will give the filename of that link, not the real file 
it points to.

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From pc at p-cos.net  Thu May 26 03:33:04 2005
From: pc at p-cos.net (Pascal Costanza)
Date: Thu, 26 May 2005 09:33:04 +0200
Subject: What are OOP's Jargons and Complexities?
In-Reply-To: <2225581.h9zeA6l3zh@yahoo.com>
References: <1116843761.619249.144790@g47g2000cwa.googlegroups.com>
	<bAske.14563$yx.14338@fe08.lga> <3584469.Aerji1NdQr@yahoo.com>
	<xn0e2ntb7j0p7lg00b@news.verizon.net>
	<2225581.h9zeA6l3zh@yahoo.com>
Message-ID: <3flcdiF8c343U1@individual.net>

alex goldman wrote:
> John McGrath wrote:
> 
>>Unfortunately, there is no
>>consensus as to what the term means.
> 
> If the language allows the programmer to write programs from the 'slack'
> domain, by saying "just trust me on this", then it's not strongly typed.
> 
> What other meanings are there? I wasn't aware of the lack of consensus.

There is a difference between getting a core dump when you invoke 
undefined behavior on some object, or just getting an exception. You can 
programmatically react to an exception to do something meaningful but 
not to a core dump. Some people use the term weak typing to refer to 
languages that potentially core dump whereas they use the term strong 
typing for languages that don't.


Pascal

-- 
2nd European Lisp and Scheme Workshop
July 26 - Glasgow, Scotland - co-located with ECOOP 2005
http://lisp-ecoop05.bknr.net/


From bokr at oz.net  Sat May  7 12:48:27 2005
From: bokr at oz.net (Bengt Richter)
Date: Sat, 07 May 2005 16:48:27 GMT
Subject: Need help subclassing Borg
References: <pan.2005.05.07.12.28.34.263372@REMOVETHIScyber.com.au>
Message-ID: <427ce14c.916411409@news.oz.net>

On Sat, 07 May 2005 22:28:34 +1000, Steven D'Aprano <steve at REMOVETHIScyber.com.au> wrote:

>I've been working with the Borg design pattern from here:
>http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/66531
>
>and I'm having problems subclassing it.
>
>I'm a newbie, so I've probably missed something obvious.
>
>I want two Borg-like classes where all instances share state within each
>class, but not between them. This is what I tried:
>
>py> class Borg:
>py>     _shared_state = {}
>py>     def __init__(self):
>py>         self.__dict__ = self._shared_state
>py> 
>py> class Duck(Borg):
>py>     def __init__(self):
>py>         Borg.__init__(self)
>py>         self.covering = "feathers" # all ducks are feathered
>py>
>py> class Rabbit(Borg):
>py>     def __init__(self):
>py>         Borg.__init__(self)
>py>         self.covering = "fur" # all rabbits are furry
>py>
>py> bugs = Bunny(); daffy = Duck()
>py> daffy.covering
>'feathers'
>py> bugs.covering
>'feathers'
>
>Not what I wanted or expected. What I wanted was for the subclasses Rabbit
>and Duck to each inherit Borg-like behaviour, but not to share state with
>any other Borgs. In other words, all Ducks share state, and all Rabbits
>share state, but Ducks and Rabbits do not share state with each other.
>
>I now see why Ducks and Rabbits are sharing state: they both share the
>same __dict__ as all Borg instances. But I don't see how to get the
>behaviour I want. (Except by cutting and pasting the Borg code into each
>one.) Can anyone help?
>

If you are using old-style classes (which you need for this Borg), then you could
keep different shared state dicts within a _shared_states dict, e.g. based on
the name of the subclassed classes, e.g.,

 >>> class Borg:
 ...     _shared_states = {} #note plural
 ...     def __init__(self):
 ...         self.__dict__ = self._shared_states.setdefault(self.__class__.__name__, {})
 ...
 >>> class Duck(Borg):
 ...     def __init__(self):
 ...         Borg.__init__(self)
 ...         self.covering = "feathers" # all ducks are feathered
 ...
 >>> class Rabbit(Borg):
 ...     def __init__(self):
 ...         Borg.__init__(self)
 ...         self.covering = "fur" # all rabbits are furry
 ...
 >>> bugs = Bunny(); daffy = Duck()
 Traceback (most recent call last):
   File "<stdin>", line 1, in ?
 NameError: name 'Bunny' is not defined

Hm, where'd that Bunny come from?

 >>> bugs = Rabbit(); daffy = Duck()
 >>> daffy.covering
 'feathers'
 >>> bugs.covering
 'fur'
 >>> vars(Borg)
 {'__module__': '__main__', '__doc__': None, '__init__': <function __init__ at 0x02EE8D14>, '_sha
 red_states': {'Rabbit': {'covering': 'fur'}, 'Duck': {'covering': 'feathers'}}}
 >>> donald = Duck()
 >>> donald.covering
 'feathers'
 >>> roger = Rabbit()
 >>> roger.covering
 'fur'
 >>> Borg._shared_states['Duck']
 {'covering': 'feathers'}
 >>> Borg._shared_states['Rabbit']
 {'covering': 'fur'}

Since you are calling Borg.__init__(self), you could specify some other
classifier than the implicit class name, e.g., Borg.__init__(self, 'feathered')
vs Borg.__init__(self, 'furred') and use that as the key in the setdefault call.

As mentioned in the recipe discussion, new style classes differ somewhat, but you
can accomplish the same functionality, just that if you have special things like
__slots__ or descriptors, you may have to think about how they might interact with
your shared state access.

Regards,
Bengt Richter


From aa at hanmail.net  Mon May 30 00:18:01 2005
From: aa at hanmail.net (Çϳª·Î)
Date: Mon, 30 May 2005 13:18:01 +0900
Subject: test from hanaro sorry
Message-ID: <d7e45q$733$1@tnews.hananet.net>





From peter at engcorp.com  Tue May 10 09:16:51 2005
From: peter at engcorp.com (Peter Hansen)
Date: Tue, 10 May 2005 09:16:51 -0400
Subject: The first programming riddle on the net. Python-challenge
In-Reply-To: <mailman.283.1115727959.29826.python-list@python.org>
References: <mailman.283.1115727959.29826.python-list@python.org>
Message-ID: <d-GdnSPFpbcPKR3fRVn-uw@powergate.ca>

Sara Khalatbari wrote:
> Hey guys!
> Thanks for helping me find time&date.
> 
> Have you seen this?
> This is the first programming riddle on the net with
> 20 levels! 
> 
> http://www.pythonchallenge.com/

Yes, there's been "a bit" of discussion since this was announced a week 
or two ago: 
http://groups.google.ca/group/comp.lang.python/browse_thread/thread/7a755219ea1a5cec/7c98f7717c030b12?q=riddle&hl=en#7c98f7717c030b12



From jasondrew72 at gmail.com  Fri May 20 13:07:55 2005
From: jasondrew72 at gmail.com (Jason Drew)
Date: 20 May 2005 10:07:55 -0700
Subject: Convert from numbers to letters
In-Reply-To: <6_udnUizapsdnhPfRVn-vw@comcast.com>
References: <1116511005.900715.107260@o13g2000cwo.googlegroups.com>
	<1116519193.037429.93560@o13g2000cwo.googlegroups.com>
	<1116529140.470352.129690@z14g2000cwz.googlegroups.com>
	<mailman.224.1116530388.8733.python-list@python.org>
	<1116535087.901874.167870@g43g2000cwa.googlegroups.com>
	<1116541217.303770.314860@f14g2000cwb.googlegroups.com>
	<1116596845.792019.40340@g14g2000cwa.googlegroups.com>
	<6_udnUizapsdnhPfRVn-vw@comcast.com>
Message-ID: <1116608875.145410.308690@g14g2000cwa.googlegroups.com>

Hey, that's good. Thanks Steve. Hadn't seen it before. One to use.

Funny that Pythonwin's argument-prompter (or whatever that feature is
called) doesn't seem to like it.

E.g. if I have
def f(tupl):
    print tupl

Then at the Pythonwin prompt when I type
f(
I correctly get "(tupl)" in the argument list pop-up box.

But if I have
def f((a, b)):
    print a, b

then when I type
f(
I just get "(.0)" in the argument list pop-up box.

Or with
def f(p, q, (a, b)):
    pass
Pythonwin prompts with
"(p, q, .4)"


However in each case the help() function correctly lists all the
arguments. Strange. I'll check if it's a known "feature".

This is with
"PythonWin 2.4 (#60, Feb  9 2005, 19:03:27) [MSC v.1310 32 bit (Intel)]
on win32."



From jean_seb at videotron.ca  Tue May 17 11:49:36 2005
From: jean_seb at videotron.ca (=?ISO-8859-1?Q?Jean-S=E9bastien_Guay?=)
Date: Tue, 17 May 2005 11:49:36 -0400
Subject: Problem listing services with wmi
In-Reply-To: <9A28C052FF32734DACB0A288A3533991EBB815@vogbs009.gb.vo.local>
References: <9A28C052FF32734DACB0A288A3533991EBB815@vogbs009.gb.vo.local>
Message-ID: <428A1290.8050607@videotron.ca>

Hello Tim, thanks for replying,

>For your
>information, what the code is doing behind the scenes is the following:
>
><code>
>
>import win32com.client
>
>c = win32com.client.GetObject (
>  "winmgmts:{impersonationLevel=Impersonate,authenticationLevel=Default}/root/cimv2"
>)
>for service in c.ExecQuery ("SELECT * FROM Win32_Service"):
>  if service.Properties_ ("State").Value == "Stopped":
>    print service.Properties_ ("Caption").Value
>    print service.Properties_ ("State").Value
>
></code>
>  
>

Running this code seems to go through the 87 first services in the list 
returned by ExecQuery, then stops with the following error :

Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File "G:\Python-2.4\Lib\site-packages\win32com\client\util.py", line 
83, in next
    return _get_good_object_(self._iter_.next())
pywintypes.com_error: (-2147217398, 'OLE error 0x8004100a', None, None)

Could there be such a thing as a "null pointer" in the list at position 
88? Or is that not possible in Python? Would the iterator just stop at a 
null value? As I said, I'm pretty new to Python so I'm just throwing 
around ideas here.

><code>
>
>set wmi = GetObject ("winmgmts:{impersonationLevel=impersonate}")
>set ServiceSet = wmi.InstancesOf ("Win32_Service")
>for each Service in ServiceSet
>   WScript.Echo Service.Description
>Next
>
></code>
>  
>

This gives me the first 87 services as well, and then stops with this 
message :

C:\Documents and Settings\guayj\Desktop\bob.vbs(7, 1) (null): 0x8004100A

So it would seem that the 3 methods give the same result. As to which 
service it has gotten to when it gets to position 88 in the list, 
obviously I can't find out with a script, and it seems that the list 
isn't in any order I can see, so I couldn't even venture a guess... I'll 
try looking if there's a service in my list that isn't valid (points to 
an uninstalled program for example) or something like that... But if you 
have other ideas please let me know.

>PS I realise that by now you've probably moved on from
>this approach, but if you did manage to pin down a problem
>we could address, I'd be very glad to address it.
>  
>

Not at all, this is a small project I'm using to try and learn Python... 
I'm currently on summer break before I start my Masters, so I have the 
luxury of keeping this on the back burner until I find a fix... Thanks 
for your help!

J-S

-- 
___________________________________________
Jean-S?bastien Guay   jean_seb at videotron.ca
             http://whitestar02.webhop.org/



From rambam at bigpond.net.au  Sat May  7 20:23:35 2005
From: rambam at bigpond.net.au (vermicule)
Date: Sun, 08 May 2005 00:23:35 GMT
Subject: Language documentation ( was Re: Computing Industry shams)
References: <1115509201.680334.140840@f14g2000cwb.googlegroups.com>
Message-ID: <874qdezh76.fsf@kafka.homenet>

"Xah Lee" <xah at xahlee.org> writes:

> A|B, where A and B can be arbitrary REs, creates a regular expression
> that will match either A or B. An arbitrary number of REs can be
> separated by the "|" in this way. This can be used inside groups (see
> below) as well. As the target string is scanned, REs separated by "|"
> are tried from left to right. When one pattern completely matches, that
> branch is accepted. This means that once A matches, B will not be
> tested further, even if it would produce a longer overall match. In
> other words, the "|" operator is never greedy. To match a literal "|",
> use \|, or enclose it inside a character class, as in [|].
>
> --end quote--
>
> Note: In other words, the "|" operator is never greedy.
>
> Note the need to inject the high-brow jargon "greedy"here as a
> latch on sentence.

What is so hard to understand ?
Should be perfectly clear even to a first year undergraduate.

As for "greedy" even a minimal exposure to Djikstra's shortest path
algorithm would have made the concept intuitive. And from memory,
that is the sort of thing done in Computing 101 and in  Data Structures and
Algorithms 101

It seems to me that you want the Python doc to be written for morons.
And that is not a valid complaint. 


From gigi-s at bigfoot.com  Mon May 30 12:12:56 2005
From: gigi-s at bigfoot.com (Gigi)
Date: Mon, 30 May 2005 09:12:56 -0700
Subject: __getattribute__ and __getattr__
In-Reply-To: <d7dpam$jal$1@sea.gmane.org>
References: <d7dgd4$29v$1@sea.gmane.org> <d7dpam$jal$1@sea.gmane.org>
Message-ID: <429B3B88.3080401@bigfoot.com>

Terry Reedy wrote:
> "Gigi" <gigi-s at bigfoot.com> wrote in message 
> news:d7dgd4$29v$1 at sea.gmane.org...
> 
>>Hi,
>>In the Python documentation regarding __getattribute__ (more attribute
>>access for new style classes) it is mentioned that if __getattribute__
>>is defined __getattr__ will never be called (unless called explicitely).
>>Here is the exact citation:
> 
> 
> Discrepancy reported in
> 
> https://sourceforge.net/tracker/?func=detail&atid=105470&aid=1204734&group_id=5470
> 
> Guido declared behavior right and doc wrong and in need of correction.
> 
> Terry J. Reedy
> 
> 
> 

Thanks for your reply. It definitely clears the issue. I'm writing an
article to Dr. Dobbs about the Python object model and I wouldn't want
to be inaccurate. I fill a little like Leibnitz :-) . It's a curious
coincidence that two separate people notice the same documentation issue
that lingere for such a long time in such a short time span.

Thanks, Gigi





From alainpoint at yahoo.fr  Tue May 17 07:58:33 2005
From: alainpoint at yahoo.fr (alainpoint at yahoo.fr)
Date: 17 May 2005 04:58:33 -0700
Subject: Bug in Elementtree/Expat
Message-ID: <1116331113.765085.281490@g47g2000cwa.googlegroups.com>

Hello,

I use Elementtree to parse an elementary SVG file (in fact, it is one
of the examples in the "SVG essentials" book). More precisely, it is
the fig0201.svg file in the second chapter.
The contents of the file are as follows (i hope it will be rendered
correctly):
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.0//EN"
    "http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd">
<svg width="200" height="200">
<title>Default User Coordinates</title>
<desc>Shows a rectangle on a grid in default user coordinates</desc>
<image xlink:href="default_ruler.svg" x="0" y="0" width="200"
height="200"/>
<g transform="translate(40,40)">
<rect x="10" y="10" width="50" height="30"style="stroke: black; fill:
none;"/>
</g>
</svg>

The parsing fails in the following way:
Traceback (most recent call last):
  File "C:\privatedata\myapp.py", line 60, in ?
    root = ElementTree(file=infile).getroot()
  File "c:\python23\lib\site-packages\elementtree\ElementTree.py", line
554, in __init__
    self.parse(file)
  File "c:\python23\lib\site-packages\elementtree\ElementTree.py", line
594, in parse
    parser.feed(data)
  File "c:\python23\lib\site-packages\elementtree\ElementTree.py", line
1171, in feed
    self._parser.Parse(data, 0)
xml.parsers.expat.ExpatError: unbound prefix: line 6, column 1


The problem seems to lie with the xlink:href tag. If i remove the xlink
namespace, it then does not produce a traceback.

Thank you for helping
Alain



From xah at xahlee.org  Fri May 13 05:52:34 2005
From: xah at xahlee.org (Xah Lee)
Date: 13 May 2005 02:52:34 -0700
Subject: function with variable arguments
Message-ID: <1115977954.266898.141150@g49g2000cwa.googlegroups.com>

i wanted to define a function where the number of argument matters.
Example:

def Range(n):
    return range(n+1)

def Range(n,m):
    return range(n,m+1)

def Range(n,m,step):
    return range(n,m+1,step)

this obvious doesn't work. The default argument like
Range(n=1,m,step=1) obviously isn't a solution.

can this be done in Python?

or, must the args be changed to a list?

 Xah
 xah at xahlee.org
? http://xahlee.org/



From pyguy2 at gmail.com  Wed May 25 17:16:42 2005
From: pyguy2 at gmail.com (pyguy2 at gmail.com)
Date: 25 May 2005 14:16:42 -0700
Subject: SSL (HTTPS) with 2.4
In-Reply-To: <1116808438.811166.49180@g49g2000cwa.googlegroups.com>
References: <1116392416.139727.84630@g49g2000cwa.googlegroups.com>
	<428AD4D1.8030405@v.loewis.de>
	<1116396878.995648.206820@g49g2000cwa.googlegroups.com>
	<1116406256.213128.68180@f14g2000cwb.googlegroups.com>
	<grGie.3984$uR4.2802@newsread2.news.atl.earthlink.net>
	<1116422715.320683.228810@g49g2000cwa.googlegroups.com>
	<1116424363.953180.79260@g47g2000cwa.googlegroups.com>
	<1116424660.917136.79680@g47g2000cwa.googlegroups.com>
	<428b7bc5$0$7346$9b622d9e@news.freenet.de>
	<1116463961.944713.210860@g49g2000cwa.googlegroups.com>
	<mailman.208.1116513082.8733.python-list@python.org>
	<1116524774.606167.98240@f14g2000cwb.googlegroups.com>
	<1116550788.207740.171780@o13g2000cwo.googlegroups.com>
	<mailman.241.1116588685.8733.python-list@python.org>
	<1116627976.845517.268370@z14g2000cwz.googlegroups.com>
	<1116808438.811166.49180@g49g2000cwa.googlegroups.com>
Message-ID: <1117055802.770863.195480@g14g2000cwa.googlegroups.com>

After failed attempts at trying to get my code to work with squid.

I did some research into this and came up with some info.

http://www.python.org/peps/pep-0320.txt

"- It would be nice if the built-in SSL socket type
could be used for non-blocking SSL I/O.  Currently
packages such as Twisted  which implement async
servers using SSL have to require third-party packages
such as pyopenssl. "

My guess is that the squid proxy server uses
non-blocking sockets which python ssl does not
support.

And, of course after looking at the squid site, I found this:

"Unlike traditional caching software, Squid handles
all requests in a single, non-blocking, I/O-driven
process."

Now, I haven't had time to verify this. But, it  can explain why the
non-ssl proxy authentication works and the ssl partially works. And,
also why I get success with a different type of proxy server.

For a clue as to why there is this problem I would also recommend
looking at  http://www.openssl.org/support/faq.html, specifically the
section on non-blocking i/o.

It looks like pyopenssl would be an option:
http://pyopenssl.sourceforge.net/

It's docs comment that it was written because m2crypto error handeling
was not finished for non-blocking i/o:

http://pyopenssl.sourceforge.net/pyOpenSSL.txt

The reason this module exists at all is that the SSL support in the
   socket module in the Python 2.1 distribution (which is what we used,
   of course I cannot speak for later versions) is severely limited.

   When asking about SSL on the comp.lang.python newsgroup (or on
   python-list at python.org) people usually pointed you to the M2Crypto
   package. The M2Crypto.SSL module does implement a lot of OpenSSL's
   functionality but unfortunately its error handling system does not
   seem to be finished, especially for non-blocking I/O. I think that
   much of the reason for this is that M2Crypto^1 is developed using
   SWIG^2. This makes it awkward to create functions that e.g. can
return
   both an integer and NULL since (as far as I know) you basically
write
   C functions and SWIG makes wrapper functions that parses the Python
   argument list and calls your C function, and finally transforms your
   return value to a Python object.

john



From rhall at thiess.com.au  Thu May 19 03:35:33 2005
From: rhall at thiess.com.au (Bloke)
Date: 19 May 2005 00:35:33 -0700
Subject: urllib2 EOF occurred in violation of protocol with proxy
Message-ID: <1116488133.633861.169860@g49g2000cwa.googlegroups.com>

I want to connect to a https server through an authenticating  proxy
like this:

import urllib2

proxy_info = {
    'user' : 'me',
    'pass' : 'password',
    'host' : 'mycompany.com.au',
    'port' : 8008 }

# build a new opener that uses a proxy requiring authorization
proxy_support = urllib2.ProxyHandler({"https":"https://%(user)s:%
(pass)s@%(host)s:%(port)d" % proxy_info})

opener = urllib2.build_opener(proxy_support, urllib2.HTTPHandler)

# install it
urllib2.install_opener(opener)

# use it
f = urllib2.urlopen('https://www.securewebsite.com.au')
print f.headers
print f.read()
f.close()

If I modify the 'https' to 'http' it works fine.  But in https mode it
returns:

URLError: <urlopen error (8, 'EOF occurred in violation of protocol')>

The site works fine if I do not go through the proxy, so it appears the
proxy is not returning an EOF.  I been searching for an answer, and
found many other sites where people have had the same problem.  Some
have suggested m2crypto.

Is there a work around using the standard  2.4.1 installation?



From peter at engcorp.com  Tue May 10 11:41:51 2005
From: peter at engcorp.com (Peter Hansen)
Date: Tue, 10 May 2005 11:41:51 -0400
Subject: Library Naming Conventions.
In-Reply-To: <1115739023.302545.109300@o13g2000cwo.googlegroups.com>
References: <1114851378.781754.194030@z14g2000cwz.googlegroups.com>
	<1114860766.488589.152380@o13g2000cwo.googlegroups.com>
	<1115739023.302545.109300@o13g2000cwo.googlegroups.com>
Message-ID: <QP6dnfUOxYHBSx3fRVn-1Q@powergate.ca>

chris.lyon at spritenote.co.uk wrote:
> quoting:
> 
>       Modules should have short, lowercase names, without underscores.
> 
> this still doesn't explain Cookie.

Sure it does.  The subject line says "conventions", and a convention 
isn't a firm rule, just something many people agree on.  Obviously the 
author of Cookie has different preferences.  Nobody is bound by a 
convention.

The PEP describes what is widespread but not universal preference, 
that's all.

-Peter


From dan at dontspammecauseidontlikit.com  Thu May  5 05:11:08 2005
From: dan at dontspammecauseidontlikit.com (Dan)
Date: Thu, 05 May 2005 17:11:08 +0800
Subject: Sockets
Message-ID: <7nnj71thsiv0pnd316imovuobnbbeqnjrq@4ax.com>



I have a problem and I don't quite know how to implement the solution.

I'll have a server application that will listen on a tcp port and make
many similtaneous connections to remote clients.  From time to time,
I'll need to write a small amount of data on one of those sockets.  A
notification to write to one of the sockets will come from another
program/process.

I think that the best way to send the notification to this server
application is via a udp message.  Alternatively, I could use tcp, but
I don't think I'll need the extra complexity for what I want to do.
(Other suggestions welcome.)

The server application will multiplex the connections using 'select',
so much of the time it will be blocked on 'select'.

My problem is how to also listen on a udp port while the process is
blocked by 'select'.  Should I run a separate thread?  And if so can I
share the socket connection across the two threads?  (Thread 1 will be
accepting client connections, thread 2 will we writing data to it.)
Or should I simply let 'select' time out after some period?

I'm a bit lost as to how to do this, I hope someone can put me on the
right track.  Any solution that I use should be applicable on Linux
and Windows platforms.

Thanks

Dan


From peter at engcorp.com  Fri May 13 14:43:44 2005
From: peter at engcorp.com (Peter Hansen)
Date: Fri, 13 May 2005 14:43:44 -0400
Subject: stop a thread safetely
In-Reply-To: <d62pg3$m5g$1@bagan.srce.hr>
References: <pan.2005.05.13.12.06.14.991870@gmail.com>
	<UvCdnaGDcsHBOhnfRVn-vg@powergate.ca>
	<pan.2005.05.13.14.47.34.35565@gmail.com>
	<GKydnSRaPKHMfxnfRVn-ig@powergate.ca> <d62pg3$m5g$1@bagan.srce.hr>
Message-ID: <BYydndoBipQHaBnfRVn-1Q@powergate.ca>

Ivan Voras wrote:
> Peter Hansen wrote:
> 
>> call to recv() does not guarantee that the full 608 bytes of data is 
> 
> Does read() have that guarantee?

Assuming you mean read() on the file object that would be returned by 
calling makefile() on the socket, then the docs imply that this is the 
case, but I wouldn't call that a "guarantee".  Someone who knows the 
inner workings might have a comment on that (in which case it might make 
a good patch to the docs to clarify this issue...).

-Peter


From gsakkis at rutgers.edu  Sun May  1 07:59:17 2005
From: gsakkis at rutgers.edu (George Sakkis)
Date: 1 May 2005 04:59:17 -0700
Subject: Numeric/Numarray equivalent to zip ?
References: <1114849922.518669.105590@l41g2000cwc.googlegroups.com>
	<d51uv7$9hj$03$1@news.t-online.com>
Message-ID: <1114948757.585835.8180@z14g2000cwz.googlegroups.com>

"Peter Otten" <__peter__ at web.de> wrote:

> George Sakkis wrote:
>
> > What's the fastest and most elegant equivalent of zip() in
> > Numeric/Numarray between two equally sized 1D arrays ? That is, how
to
> > combine two (N,)-shaped arrays to one (N,2) (or (2,N)) shaped ? I
> > expect the fastest and the most elegant idiom to be identical, as
it is
> > usually the case in this excellent library, but if not, both would
be
> > useful to know. Thanks,
>
> >>> import Numeric as nu
> >>> a = nu.array(range(3))
> >>> nu.array([a, a])
> array([[0, 1, 2],
>        [0, 1, 2]])
> >>> nu.transpose(nu.array([a, a]))
> array([[0, 0],
>        [1, 1],
>        [2, 2]])
>
> Or am I missing something? As to speed, it seems to be the fastest to
> write...

Though not the fastest to execute; using concatenate instead of
initializing an array from a list [a,a] is more than 2,5 time faster in
my system (~4.6 vs 11.8 usec per loop according to timeit.py), and it's
not harder either. One difference is that the equivalent expression for
concatenate expects arrays of shape (1,len(a)) instead of 1D arrays os
shape (len(a),):

>>> a = reshape(range(5), (1,5))
>>> a
array([       [0, 1, 2, 3, 4]])
>>> concatenate((a,a))
array([[0, 1, 2, 3, 4],
       [0, 1, 2, 3, 4]])


George



From slick_mick_00 at hotmail.com  Sat May 28 09:24:19 2005
From: slick_mick_00 at hotmail.com (Michael)
Date: Sat, 28 May 2005 13:24:19 +0000 (UTC)
Subject: Is there a better way of doing this?
Message-ID: <d79re2$sgg$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>

Hi,
I'm fairly new at Python, and have the following code that works but isn't
very concise, is there a better way of writing it?? It seems much more
lengthy than python code i have read..... :-)
(takes a C++ block and extracts the namespaces from it)



def ExtractNamespaces(data):
 print("Extracting Namespaces")
 p = re.compile( 'namespace (?P<name>[\w]*)[\n\t ]*{')

 subNamespaces = []

 newNS = p.search(data)
 while( newNS ):
  print "\t" + newNS.group("name")

  OPCount = 1
  Offset = newNS.end()
  while(OPCount > 0):
   if( data[Offset] == "}" ):
    OPCount = OPCount -1;
   elif( data[Offset] == "{" ):
    OPCount = OPCount + 1;
   Offset = Offset+1;

  #Extract Data:
  newNSData = data[newNS.end():Offset-1]
  data = data[0:newNS.start()] + data[Offset:]
  newNamespace = [newNS.group("name"), newNSData];
  subNamespaces.append(newNamespace)

  #Perform NewSearch
  newNS = p.search(data)
 return [subNamespaces,data]








From superprad at gmail.com  Tue May 31 19:55:21 2005
From: superprad at gmail.com (superprad at gmail.com)
Date: 31 May 2005 16:55:21 -0700
Subject: Swig compile errors
Message-ID: <1117583720.968040.230380@g47g2000cwa.googlegroups.com>

Hi I am trying to write a python wrapper for a C code I have using
swig. when i try to compile the _wrap.c i get a bunch of these warnings
and errors can anyone help
Steps I followed :

$swig -python test_hk.c
this generates test_hk.py and test_hk_wrap.c
then i compile it as

$gcc -Wall -std=c99 test_hk.c test_hk_wrap.c -I/usr/include/python2.3/

/usr/lib/gcc-lib/i486-linux/3.3.5/../../../crt1.o(.text+0x18): In
function `_start':
../sysdeps/i386/elf/start.S:98: undefined reference to `main'
/tmp/ccayOWVb.o(.text+0xb6f): In function `PySwigObject_repr':
: undefined reference to `PyString_FromFormat'
/tmp/ccayOWVb.o(.text+0xbe1): In function `PySwigObject_str':
: undefined reference to `PyString_FromString'
/tmp/ccayOWVb.o(.text+0xc22): In function `PySwigObject_long':
: undefined reference to `PyLong_FromUnsignedLong'
/tmp/ccayOWVb.o(.text+0xc87): In function `PySwigObject_oct':
: undefined reference to `PyOS_snprintf'
and a bunch of them..............

: undefined reference to `PyModule_GetDict'
collect2: ld returned 1 exit status

do I have to include any libraries or whats it that I am missing.



From meh1963 at gmail.com  Wed May 11 13:28:04 2005
From: meh1963 at gmail.com (Matt Hayden)
Date: 11 May 2005 10:28:04 -0700
Subject: Jesus said, "I am the way,
	the truth and the life: no one can come to the Father(God)(in Heaven),
	but by me." (John 14:6) This means that if you die without trusting in
	Jesus Christ as your Lord and Saviour you will die in your sins
	and be forever sepa
In-Reply-To: <3eeta6F2m45kU1@individual.net>
References: <1115824563.613661.169620@g47g2000cwa.googlegroups.com>
	<M%qge.1317047$Xk.244810@pd7tw3no> <3eeta6F2m45kU1@individual.net>
Message-ID: <1115832484.237918.53830@o13g2000cwo.googlegroups.com>


MC05 wrote:
> "don freeman" <dfreem3 at nospam.shaw.ca> wrote in message
> news:M%qge.1317047$Xk.244810 at pd7tw3no...
> > The truth is, Jesus should never have torn down the fig tree. He
got so
> > pissed off at the fig tree for not having figs, even though it
wasn't
> > fig season. This was not the action of someone who has even a
little
> > truth and light.
> >
> > Imagine if Jesus came back now. I'd hate to see his road rage.
>
> I'm sure he'd drive fine.
>
> But if a fig tree pulled in front of him.......woof!!
> >

What if a fig leaf pulled off in front of him?



From pdemb at gazeta.pl  Mon May 16 12:30:47 2005
From: pdemb at gazeta.pl (Peter Dembinski)
Date: Mon, 16 May 2005 18:30:47 +0200
Subject: question about the id()
References: <428809fc.62d7a08a.1cfe.ffffd7ef@mx.gmail.com>
	<mailman.23.1116212733.8733.python-list@python.org>
Message-ID: <873bsnxhe0.fsf@hector.domek>

Skip Montanaro <skip at pobox.com> writes:

>     kyo> Can someone explain why the id() return the same value, and
>     kyo> why these values are changing?
>
> Instance methods are created on-the-fly.  

So, the interpreter creates new 'point in address space' every time
there is object-dot-method invocation in program?  

-- 
http://www.peter.dembinski.prv.pl


From bokr at oz.net  Sat May 14 16:27:48 2005
From: bokr at oz.net (Bengt Richter)
Date: Sat, 14 May 2005 20:27:48 GMT
Subject: A new to Python question
References: <1116088663.428932.130860@g43g2000cwa.googlegroups.com>
	<rfnhl2-ig5.ln1@Bernd.Nawothnig.dialin.t-online.de>
	<1116093118.599403.35940@g14g2000cwa.googlegroups.com>
	<26thl2-5q5.ln1@Bernd.Nawothnig.dialin.t-online.de>
Message-ID: <42865bd1.173398754@news.oz.net>

On Sat, 14 May 2005 20:38:26 +0200, Bernd Nawothnig <Bernd.Nawothnig at t-online.de> wrote:

>
>> On 2005-05-14, M.E.Farmer wrote:
>
>> (x,y,dotp,sumx,maxv) = abc(x,y,dotp,sumx,maxv)
>> This will only create a tuple in memory that has no name to reference
>> it by!
>
>Maybe. But it does not seem to hurt. And I am not sure the tupel _is_
>really created in that situation.
>
One way to get insight into what a statement does is to disassemble its code, e.g.,

 >>> import dis
 >>> dis.dis(compile('(x,y,dotp,sumx,maxv) = abc(x,y,dotp,sumx,maxv)','','exec'))
   1           0 LOAD_NAME                0 (abc)
               3 LOAD_NAME                1 (x)
               6 LOAD_NAME                2 (y)
               9 LOAD_NAME                3 (dotp)
              12 LOAD_NAME                4 (sumx)
              15 LOAD_NAME                5 (maxv)
              18 CALL_FUNCTION            5
              21 UNPACK_SEQUENCE          5
              24 STORE_NAME               1 (x)
              27 STORE_NAME               2 (y)
              30 STORE_NAME               3 (dotp)
              33 STORE_NAME               4 (sumx)
              36 STORE_NAME               5 (maxv)
              39 LOAD_CONST               0 (None)
              42 RETURN_VALUE

In the context of a function or module scope, those loads and stores will change
to optimized byte code ops like LOAD_FAST and STORE_FAST etc, but you can see what's
happening above. I.e., on return from the function call, the returned sequence (we know it's
a tuple in your example, but it could be some other sequence thing) is upacked and its elements
are bound to the individual names, just as individual "assignments" would do.

Regards,
Bengt Richter


From peter at engcorp.com  Thu May 19 09:52:39 2005
From: peter at engcorp.com (Peter Hansen)
Date: Thu, 19 May 2005 09:52:39 -0400
Subject: socket programming and port scans
In-Reply-To: <d6gbsu$no1$1@solaris.cc.vt.edu>
References: <d6gbsu$no1$1@solaris.cc.vt.edu>
Message-ID: <bcKdnT-2JJXbBxHfRVn-qQ@powergate.ca>

rbt wrote:
> I don't fully understand sockets, I just know enough to be dangerous. 
> The below is not detected by nmap, but is affected by iptables or ipsec. 
> Can anyone explain why that is?
> 
>     s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
>     s.bind((ip_param, port_param))
>     while 1:
>         s.listen(5)

This, by the way, is wrong.  s.listen(5) just tells the stack that you 
would like to allow a backlog of up to 5 waiting-to-be-connected 
connection attempts while you are accepting another.  The call doesn't 
block and needn't be called repeatedly.  You could just as well do the 
call to listen first, then have an empty "while 1: pass" loop (but note 
that in either case it is a "busy wait", consuming 100% CPU while it runs).

What you are looking for is more like this:

s.listen(5)
while 1:
     s.accept()  # wait for connection, and ignore it


If you want to simulate a little server to allow multiple connections, 
you would of course need to use the value returned by accept() and 
probably call close() on the client socket right away.

-Peter


From combinational.logic at soc-ip.com  Fri May 27 13:36:33 2005
From: combinational.logic at soc-ip.com (combinational.logic $ soc-ip.com)
Date: 27 May 2005 10:36:33 -0700
Subject: Inheritance, polymorphism, and introspection in Python
Message-ID: <1117215393.387579.121910@g43g2000cwa.googlegroups.com>

The following website (http://www.soc-ip.com/weblog) has an example of
inheritance, polymorphism, and introspection in Python.  The example
shows a simple classification system for microprocessors.  Hopefully
someone will find this interesting / useful.



From utabintarbo at gmail.com  Sat May  7 18:27:58 2005
From: utabintarbo at gmail.com (utabintarbo at gmail.com)
Date: 7 May 2005 15:27:58 -0700
Subject: globbing multiple wildcards
In-Reply-To: <1115481354.357281.240920@g14g2000cwa.googlegroups.com>
References: <1115477662.937084.260270@g14g2000cwa.googlegroups.com>
	<p15fe.4173$5I5.437956@newshog.newsread.com>
	<1115481354.357281.240920@g14g2000cwa.googlegroups.com>
Message-ID: <1115504878.558146.327440@f14g2000cwb.googlegroups.com>

Is there any way to make this recursive? That is what I was looking
for.

Sorry I wasn't too clear before.

Bob



From kraus at hagen-partner.de  Fri May 27 09:20:23 2005
From: kraus at hagen-partner.de (Wolfram Kraus)
Date: Fri, 27 May 2005 15:20:23 +0200
Subject: Strings for a newbie
In-Reply-To: <d775jt$plg$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
References: <d7726f$fdg$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
	<42970d69@news.eftel.com>
	<d773i4$g2p$1@nwrdmz03.dmz.ncs.ea.ibs-infra.bt.com>
	<42971235.9000805@lexicon.net>
	<d775jt$plg$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
Message-ID: <d776pq$u2v$1@ork-un.noris.net>

Malcolm Wooden wrote:
> my actual code is:
> 
>   for x in range(len(l)):
>     h = string.split(l[x])
> 
> where the sentence string is in an array of one element 'l'
> Error is:
> 
> Traceback (most recent call last):
>   File "<string>", line 34, in ?
>   File "<string>", line 27, in SentenceText
>   File "C:\PYTHON22\lib\string.py", line 122, in split
>     return s.split(sep, maxsplit)
> AttributeError: 'list' object has no attribute 'split'
> 

What is l[x]? Are you sure that l[x] is a string? Do a print before the 
split to see what l[x] is. Oh, and no need for range here, if l is a list:

for x in l:
  print x
  h = x.split()

HTH,
Wolfram


From tzot at sil-tec.gr  Tue May 17 10:15:33 2005
From: tzot at sil-tec.gr (Christos TZOTZIOY Georgiou)
Date: Tue, 17 May 2005 17:15:33 +0300
Subject: Python on a public library computer
References: <1116069664.779281.320540@g47g2000cwa.googlegroups.com>
Message-ID: <v86i81986tims5f0mt8aplfq4egqb2reb1@4ax.com>

On 14 May 2005 04:21:04 -0700, rumours say that
"anton.vredegoor at gmail.com" <anton.vredegoor at gmail.com> might have
written:

>I'm typing this in a public library on a computer with OS windows 2000
>server. I can run Internet explorer, word, excel and powerpoint, that's
>it. Maybe java, but it seems to be flaky.
>
>I want to run python scripts from this computer.

<snip>

I am not sure I will help you (uncertainty based on the part I snipped),
but the part so far can be easilly solved if you install Python for
single user inside the "Documents and settings\<username>" folder (or
whatever it is called).  I did in a similar case.


End of reply here; and now for some completely minor python success
story.


Some months ago, I happened to be for full workdays at a client's site,
with strict security rules enforced (no domain login == no access even
to web proxy) but I needed to access my company's internal mail server
from my laptop (which I do by ssh forwarding usually).  I could plug in
my laptop to their network, get an address, but that was all (local
network access only).

So I asked permission from an employee there (working on a computer
logged on to the domain) if I could run a putty session with forwarding
enabled.  He said he'd ask their BOFH; now, the BOFH was strictly a
windows person (I somehow connect "strictly-<industry-standard-OS/app>
persons" with lack of resourcefulness, as if these people have 7 bits
per byte :), and he thought that my case was hopeless, since the
employee's account had only access to a web proxy, and CONNECT requests
were only allowed to port 443, but he said ok anyway (in his place, I
wouldn't; but then again, what do I know? ;).

After a call to a colleague in order to redirect connections to port 443
(from the client's network) of an underused computer at my site to port
22, I set up putty to connect through their web proxy, but that didn't
work (since no authentication was given as requested).

Then it was that I downloaded python, installed it in the employee's
documents folder, and created a 'sniffer' between the web browser and
web proxy to find out the authentication headers.  After testing them by
hand, I wrote a script to pretend it's the web browser requesting a
CONNECT from the web proxy, and putty would connect to my script which
would just pass data back and forth.  It didn't work.

I quickly found out that their web proxy did NOT let anything come and
go, unless its client had sent at least 4 octets (and that was also a
security measure they had taken which I was not told about-- they wanted
only protocols where the client talks first, ie (pun intended) typically
HTTP).  So putty was waiting for the ssh server to announce its version
before announcing itself, but the announcement of the server would not
come through until putty sent something.

So I changed the middle-server [midsrv]: as soon as putty connected to
the listening port of midsrv, it opened the connection to the web proxy,
and instantly sent the putty announcement to the ssh server, consuming
it when putty sent it normally, and happily moving octets around for the
rest of the connection.  From my laptop, I could get my emails with
plain POP3.

That was in 34 minutes time (debugging time included).

When the network guy dropped by a couple of hours later to ask me if I
needed any help, I just thanked him for letting me connect.  He
scratched his head, tried to understand what happened (didn't realise
that the python app was important even though he absent-mindedly passed
over it checking running tasks), so I let him think over it for several
minutes before explaining to him what I did.  He was most impressed with
the python program when I showed it to him, gave a warning to the
employee: "ok, run his program, but don't let him touch your computer
again!", and then came to the following conclusion (much similar to a
Python motto):

"If Python can do this, it {Python} should be forbidden..."


PS Unfortunately, I could not charge "security consulting" fees.
-- 
TZOTZIOY, I speak England very best.
"Be strict when sending and tolerant when receiving." (from RFC1958)
I really should keep that in mind when talking with people, actually...


From f.geiger at vol.at  Fri May 27 15:29:46 2005
From: f.geiger at vol.at (F. GEIGER)
Date: Fri, 27 May 2005 21:29:46 +0200
Subject: [pysqlite 2.0.2] UnicodeDecodeError: 'utf8' codec can't decode bytes
	in position 44-45: invalid data
Message-ID: <d77sf1$5m3$1@news.hispeed.ch>

A fetchall() call causes the above error. There must be some non-utf8 chars
in the table in question and - indeed - there very likely are: The table
contains pathnames of files on the harddisk of a German "speaking" PC.

What I have already done to try to overcome this is:
- Inserted "# coding: iso-8859-1" (w/o the quotes) in (hopefully) every file
of my project
- All strings I could find prefixed with "u" (w/o the quotes)
- Changed plain calls to execute(q) into execute(unicode(q))

Alas, I am not sure if this all makes really sense, and, obviously it
doesn't. What else has to be done?

Many thanks in advance and kind regards
Franz GEIGER




From tismer at stackless.com  Sat May 21 00:20:51 2005
From: tismer at stackless.com (Christian Tismer)
Date: Sat, 21 May 2005 06:20:51 +0200
Subject: first release of PyPy
In-Reply-To: <1116644536.741250.249860@g44g2000cwa.googlegroups.com>
References: <mailman.264.1116625088.8733.python-list@python.org>	<1116629407.638782.145950@g47g2000cwa.googlegroups.com>
	<1116644536.741250.249860@g44g2000cwa.googlegroups.com>
Message-ID: <428EB723.8050606@stackless.com>

beliavsky at aol.com wrote:

> Kay Schluehr wrote:
> 
>>holger krekel wrote:
>>
>>>Welcome to PyPy 0.6
>>>--------------------
>>>
>>>*The PyPy Development Team is happy to announce the first
>>>public release of PyPy after two years of spare-time and
>>>half a year of EU funded development.  The 0.6 release
>>>is eminently a preview release.*
>>
>>Congratulation to You and Your team!
>>
>>PyPy is really awesome and if it succeeds in speed demands after the
>>translation phase I believe that the project will shift the power
>>within the Python community on the long run.
> 
> 
> Could you please explain this statement? Who will gain power, and who
> will lose it? 

The Python community will gain power, and nobody will loose some.
The big win is that we gain a new flexibility that did not
exist before, even if PyPy should completely miss its speed
promises. Having an extremely flexible implementation in a
very high-level language (which happens to be Python) enables
possibilities which have not been seen, before.

There is of course a chance for some community of C programmers
to loose interest, if PyPy really gets as efficient as we hope
for. But this is a) still a long, uncertain path and b) not
a real danger, but more likely an advantage for the involved people.

> Are you suggesting that CPython and PyPy developers are
> competing?

No idea how we could get onto this track. If there is a competition,
then only if PyPy gets into a position where it is comparable
with CPython. This is not the case, at least not in a well-ordered manner.
It is not really faster, but it is definately much more flexible.
Comparisons are not suitable at all, bcause there are too many
qualities to compare about.

And I see no point for any competition in any future. We all love
Python. It is a language, and languages are communities.
If a particular implementation gets more interest for some reasons,
then because it ibetter s more efficient or more interesting, whatever
reasoning gives it popularity. But we are all with Python!

Surely we are comparing our performance with CPython's. This is
not the real point. Note also, that many of the PyPy team members belong
to CPython core developers, as well. This is not a competition, but
a huge new branch, exploring what is doable and what not.

You might also give our website a try which is quite informative
and gives you an insight into what we are aiming for.

                http://codespeak.net/pypy

PyPy is just a completely new approach to interpreted languages,
almost based upon known compiler technology, but applying this in a
consequent manner, that has no comparable prior example.

I wish to repeat the congratulations to the team for the first release!
-----------------------------------------------------------------------

ciao -- chris

-- 
Christian Tismer             :^)   <mailto:tismer at stackless.com>
tismerysoft GmbH             :     Have a break! Take a ride on Python's
Johannes-Niemeyer-Weg 9A     :    *Starship* http://starship.python.net/
14109 Berlin                 :     PGP key -> http://wwwkeys.pgp.net/
work +49 30 802 86 56  mobile +49 173 24 18 776  fax +49 30 80 90 57 05
PGP 0x57F3BF04       9064 F4E1 D754 C2FF 1619  305B C09C 5A3B 57F3 BF04
      whom do you want to sponsor today?   http://www.stackless.com/



From not at home.com  Sun May  1 16:18:39 2005
From: not at home.com (John Smith)
Date: Sun, 01 May 2005 20:18:39 GMT
Subject: Whats the best Python Book for me
Message-ID: <zQade.1185052$Xk.1184944@pd7tw3no>

I already know C/C++ programming and now wish to learn Python to do
scripting for some games that are coming out. What book would you recommend.

I am thinking Teach Your Self Python in 24 Hours is probably the best place
to start...




From mwm at mired.org  Mon May  2 21:45:43 2005
From: mwm at mired.org (Mike Meyer)
Date: Mon, 02 May 2005 20:45:43 -0500
Subject: So many things that need to be decided....
References: <G3Ade.1022$fF6.12717@news1.mts.net>
Message-ID: <86sm1584l4.fsf@guru.mired.org>

"Heather Stovold" <h_stovold at hotmail.com> writes:

> Wow - deciding to program in python sure requires a lot of decisions!

It wasn't for me.

> So far:
>
> I've decided on python for the programming language.
> I've decided on wxpython for the GUI....

Hmm. I started writing CGI apps, so I didn't need to choose a
GUI - at least not until later. I finally settled on PyQT, though I've
used TkInter as well.

> I've decided on DrPython for the Editor....

An editor for each language? Is that the kind of tower you get when
you start using IDEs? I just kept right on using the same text editor
I'd been using for the last 20 (now 30) years.

> I still need to decide on a database........   I've really only used Access,
> and my SQL skills aren't that great.  It would also need to be free....
> Any suggestions??

Access is just a way of talking to a database. Which is what most
Python database tools are - ways to talk to a back-end database.  If
you're going to be writing fairly traditional applications, this is
probably overkill. Doing web back ends, I needed to deal with
simultaneous access, so had to go this route. I chose PostGreSQL, but
I've worked with MySQL as well.

You might be better off with something that doesn't require a separate
server. Gadfly appears to qualify. There are probably other packages
that give you a DB-API or SQL interace to an internal database that
will serve your purpose.

I've worked with the berkeley db modules, which provides a way of
storing arbitrary chunks of memory on disk, using arbitrary chunks of
memory as a key. That may well be enough. The shelve module is the
easy way to use this.

> Am I going to need a program/package for a report writer?  or that might
> depend on the database I use?

That won't depend on the database. It will depend on what you want
your applications to do when it comes to generating reports - assuming
you generate any at all.

    <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From steven.bethard at gmail.com  Thu May 26 10:22:49 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Thu, 26 May 2005 08:22:49 -0600
Subject: __init__() not called automatically
In-Reply-To: <1117095907.393269.87540@g44g2000cwa.googlegroups.com>
References: <1117081917.760603.82610@z14g2000cwz.googlegroups.com>
	<mailman.121.1117083356.18027.python-list@python.org>
	<II6dnf-RIYhEwwjfRVn-hA@comcast.com>
	<1117095907.393269.87540@g44g2000cwa.googlegroups.com>
Message-ID: <Vo2dnXcPm_YhRgjfRVn-uA@comcast.com>

Sriek wrote:
> maybe like this:
>  we can have the default behaviour as calling the default constructor
> ( with default arguements where required ). Along with this, keep the
> option open to call constructors explicitly.

Ok, so here's another example:

def init(self):
     print "An __init__ method, but in what class?!!"
     print "Oh, this class: %s" % type(self).__name__

class C(object):
     pass

C.__init__ = init

So how would the compiler know that init() is a constructor for the C 
object? (You can figure that out at runtime, but I don't see how you can 
generally figure that out at compile time.)

STeVe


From vamsee_k at nospam.students.iiit.ac.in  Sat May 28 07:22:17 2005
From: vamsee_k at nospam.students.iiit.ac.in (Vamsee Krishna Gomatam)
Date: Sat, 28 May 2005 16:52:17 +0530
Subject: search/replace in Python (solved)
References: <d78opv$l99$1@domitilla.aioe.org>
	<mailman.209.1117263264.18027.python-list@python.org>
	<YXXle.7711$Cz3.933739@monger.newsread.com>
Message-ID: <d79k8u$6cs$1@domitilla.aioe.org>

Leif K-Brooks wrote:
> Oliver Andrich wrote:
> 
>
> For real-world use you'll want to URL encode and entityify the text:
> 
> import cgi
> import urllib
> 
> def google_link(text):
>     text = text.group(1)
>     return '<a href="%s">%s</a>' % (cgi.escape(urllib.quote(text)),
>                                     cgi.escape(text))
> 
> re.sub(r"<google>(.*)</google>", google_link, "<google>foo bar</google>)


Thanks a  lot for your reply. I was able to solve it this way:
text = re.sub( "<google>([^<]*)</google>", r'<a 
href="http://www.google.com/search?q=\1">\1</a>', text )


GVK


From timothy at open-networks.net  Thu May 12 01:47:58 2005
From: timothy at open-networks.net (Timothy Smith)
Date: Thu, 12 May 2005 15:47:58 +1000
Subject: urllib download insanity
Message-ID: <4282EE0E.1080100@open-networks.net>

ok what i am seeing is impossible.
i DELETED the file from my webserver, uploaded the new one. when my app 
logs in it checks the file, if it's changed it downloads it. the 
impossible part, is that on my pc is downloading the OLD file i've 
deleted! if i download it via IE, i get the new file. SO, my only 
conculsion is that urllib is caching it some where. BUT i'm already 
calling urlcleanup(), so what else can i do?
here is the code

LastModified = urllib2.urlopen('http://x.x.x.x/library.zip')
            LastModified = LastModified.headers['Content-Length']

            LocalFile = os.stat('library.zip')
            LocalFile = int(LocalFile.st_size)


            if LocalFile != int(LastModified):
                urllib.urlcleanup()
                
urllib.urlretrieve('http://x.x.x.x/library.zip','library.zip')

as a test i got someone in the office to login and try it - worked 
properly for them. i'm on a different ISP to them however, so my other 
idea is that possibly my isp has a transparent proxy setup that urllib 
is using, but IE isn't???


From prashanthellina at gmail.com  Sun May 29 05:03:03 2005
From: prashanthellina at gmail.com (Prashanth  Ellina)
Date: 29 May 2005 02:03:03 -0700
Subject: Xml writing in Python and verifying using XSD
In-Reply-To: <d774vq$oma$01$1@news.t-online.com>
References: <1117188065.742367.219360@o13g2000cwo.googlegroups.com>
	<d774vq$oma$01$1@news.t-online.com>
Message-ID: <1117357383.213236.289580@g44g2000cwa.googlegroups.com>



Diez B. Roggisch wrote:

> Use StringIO to capture the output of your writings, and use a
> xsd-validating parser (not sure which one, but google should help) to
> reread that. Or a temporary file.

Thank you very much. I'll try that.



From martin at v.loewis.de  Fri May 20 19:58:44 2005
From: martin at v.loewis.de (=?UTF-8?B?Ik1hcnRpbiB2LiBMw7Z3aXMi?=)
Date: Sat, 21 May 2005 01:58:44 +0200
Subject: processing a large utf-8 file
In-Reply-To: <d6lr9l$bis$1@bagan.srce.hr>
References: <d6lr9l$bis$1@bagan.srce.hr>
Message-ID: <428e79b4$0$29980$9b622d9e@news.freenet.de>

Ivan Voras wrote:
> Since the .encoding attribute of file objects are read-only, what is the
> proper way to process large utf-8 text files?

You should use codecs.open, or codecs.getreader to get a StreamReader
for UTF-8.

Regards,
Martin


From megahrtz at gte.net  Tue May 10 14:04:52 2005
From: megahrtz at gte.net (Alex N)
Date: 10 May 2005 11:04:52 -0700
Subject: Need a little parse help
In-Reply-To: <1115748050.760878.44510@f14g2000cwb.googlegroups.com>
References: <mailman.310.1115747834.29826.python-list@python.org>
	<1115748050.760878.44510@f14g2000cwb.googlegroups.com>
Message-ID: <1115748292.224139.71050@f14g2000cwb.googlegroups.com>

That worked! Thank you so much!



From saravanan.d at siemens.com  Mon May  9 04:32:25 2005
From: saravanan.d at siemens.com (Saravanan D)
Date: Mon, 9 May 2005 14:02:25 +0530
Subject: Exception in Python 2.3.3 Interpreter
References: <1114434259.853654.272420@z14g2000cwz.googlegroups.com>
Message-ID: <d5n76t$pe0$2@news.mch.sbs.de>

Hello,

The crash occured at the following line :

c = strcmp(vname, wname) (object.c)

Please note that the dump has been taken with the help of adplus.


# ChildEBP RetAddr  Args to Child
00 023ffa58 1e05c6da 055b1250 00637470 00000000
python23!default_3way_compare(struct _object * v = 0x053f2bfc, struct
_object * w = 0x00000001)+0x102
[F:\Python-2.3.3\Python-2.3.3\Objects\object.c @ 689]
01 023ffa74 1e05c5ee 055b1250 00637470 00000000 python23!do_richcmp(struct
_object * v = 0x1e0b9fb8, struct _object * w = 0x00000000, int op = 0)+0x4a
02 023ffa94 1e0174d9 055b1250 00637470 00000000
python23!PyObject_RichCompare(struct _object * v = 0x053f2bfc, struct
_object * w = 0x00000001, int op = 0)+0x1ae
[F:\Python-2.3.3\Python-2.3.3\Objects\object.c @ 1044]
03 023ffaa4 1e013182 00000000 055b1250 00637470 python23!cmp_outcome(int op
= 88026108, struct _object * v = 0x00000001, struct _object * w =
0x00000000)+0xa9 [F:\Python-2.3.3\Python-2.3.3\Python\ceval.c @ 3880]
04 023ffb18 1e016ba4 014f3318 00000002 0099f170 python23!eval_frame(struct
_frame * f = 0x053f2bfc)+0x542 [F:\Python-2.3.3\Python-2.3.3\Python\ceval.c
@ 1965]
05 023ffb30 1e016a69 0099f170 023ffb7c 00000002
python23!fast_function(struct _object * func = <Memory access error>, struct
_object *** pp_stack = <Memory access error>, int n = <Memory access error>,
int na = <Memory access error>, int nk = <Memory access error>)+0x94
[F:\Python-2.3.3\Python-2.3.3\Python\ceval.c @ 3520]
06 023ffb5c 1e014b65 00a280d0 00000002 00000008
python23!call_function(struct _object *** pp_stack = 0x00000001, int oparg =
0)+0x159 [F:\Python-2.3.3\Python-2.3.3\Python\ceval.c @ 3458]
07 023ffbcc 1e016ba4 006ea160 00000001 0099f1b0 python23!eval_frame(struct
_frame * f = <Memory access error>)+0x1f25
[F:\Python-2.3.3\Python-2.3.3\Python\ceval.c @ 2117]
08 023ffbe4 1e016a69 0099f1b0 023ffc30 00000001
python23!fast_function(struct _object * func = <Memory access error>, struct
_object *** pp_stack = <Memory access error>, int n = <Memory access error>,
int na = <Memory access error>, int nk = <Memory access error>)+0x94
[F:\Python-2.3.3\Python-2.3.3\Python\ceval.c @ 3520]
09 023ffc10 1e014b65 00a280d0 00000001 00000000
python23!call_function(struct _object *** pp_stack = 0x00000000, int oparg =
0)+0x159 [F:\Python-2.3.3\Python-2.3.3\Python\ceval.c @ 3458]
0a 023ffc80 1e015b6f 006cf6d0 00000000 00a1df9c python23!eval_frame(struct
_frame * f = <Memory access error>)+0x1f25
[F:\Python-2.3.3\Python-2.3.3\Python\ceval.c @ 2117]
0b 023ffcac 1e040978 0096b720 00000001 006cf6d0
python23!PyEval_EvalCodeEx(struct PyCodeObject * co = <Memory access error>,
struct _object * globals = <Memory access error>, struct _object * locals =
<Memory access error>, struct _object ** args = <Memory access error>, int
argcount = <Memory access error>, struct _object ** kws = <Memory access
error>, int kwcount = <Memory access error>, struct _object ** defs =
<Memory access error>, int defcount = <Memory access error>, struct _object
* closure = <Memory access error>)+0x70f
[F:\Python-2.3.3\Python-2.3.3\Python\ceval.c @ 2663]
0c 023ffcf0 1e0078ec 009788b0 00a1df90 00000000
python23!function_call(struct _object * func = 0x1e0baa50, struct _object *
arg = 0x0096b720, struct _object * kw = 0x00954390)+0x138
[F:\Python-2.3.3\Python-2.3.3\Objects\funcobject.c @ 512]
0d 023ffd04 1e01be03 009788b0 00a1df90 00000000
python23!PyObject_Call(struct _object * func = 0x1e0d7608, struct _object *
arg = 0x00000001, struct _object * kw = 0x00a280d0)+0x1c
[F:\Python-2.3.3\Python-2.3.3\Objects\abstract.c @ 1755]
0e 023fff24 1e0078ec 00a20f08 00671030 00000000
python23!instancemethod_call(struct _object * func = 0x1e0d7608, struct
_object * arg = 0x00000001, struct _object * kw = 0x00a280d0)+0x133
[F:\Python-2.3.3\Python-2.3.3\Objects\classobject.c @ 2433]
0f 023fff38 1e016827 00a20f08 00671030 00000000
python23!PyObject_Call(struct _object * func = 0x77e4a990, struct _object *
arg = 0x01415bd8, struct _object * kw = 0x00000000)+0x1c
[F:\Python-2.3.3\Python-2.3.3\Objects\abstract.c @ 1755]
10 023fff50 1e080c77 00a20f08 00671030 00000000
python23!PyEval_CallObjectWithKeywords(struct _object * func = 0x77e4a990,
struct _object * arg = 0x01415bd8, struct _object * kw = 0x00000000)+0xa7
[F:\Python-2.3.3\Python-2.3.3\Python\ceval.c @ 3346]
11 023fff70 1e080675 013d8ba0 00000000 014161a8 python23!t_bootstrap(void *
boot_raw = 0x77e4a990)+0x37
[F:\Python-2.3.3\Python-2.3.3\Modules\threadmodule.c @ 183]
12 023fff84 77bc90a2 0086f32c 00000000 00000000
python23!PyThread_get_thread_ident(void)+0x5
[F:\Python-2.3.3\Python-2.3.3\Python\thread_nt.h @ 213]
13 023fffb8 77e4a990 01415bd8 00000000 00000000 msvcrt!_endthread+0xa6
14 023fffec 00000000 77bc9032 01415bd8 00000000
kernel32!BaseThreadStart+0x34

- Saravanan D
"Saravanan" <saravanand at vsnl.net> wrote in message
news:1114434259.853654.272420 at z14g2000cwz.googlegroups.com...
> Hello,
>
> Im running Python Application as a Windows Service (using windows
> extensions).  But, sporadically the application crashes (crash in
> Python23.dll) and this stops the service.  This problem cann't be
> reproduced easily in my system and the call stack generated by the
> application is given below.
>
>
> Occurrence: 2005/4/22  23:24:57
> Process Id:  3072
> Process Name : D:\Python23\lib\site-packages\win32\PythonService.exe
> Thread Id:  292
> Exception code: C0000005 ACCESS_VIOLATION
> Fault address:  1E05C202 01:0005B202 C:\WINDOWS\system32\python23.dll
>
> Registers:
> EAX:1E0E2EAC
> EBX:00732EA8
> ECX:1E03E500
> EDX:016EC200
> ESI:00000000
> EDI:00732EA8
> CS:EIP:001B:1E05C202
> SS:ESP:0023:025FFA3C  EBP:00637470
> DS:0023  ES:0023  FS:003B  GS:0000
> Flags:00010246
>
> Call stack:
> Address   Frame
> 1E05C202  00637470  0001:0005B202 C:\WINDOWS\system32\python23.dll
> 016EC29C  00000003  0000:00000000
>
> The thread which throws the exception is from the Python-Core and not
> from the application logic.
>
> The above call stack points to PyObject_Compare function in object.c.
>
> Any clue about the problem?
>
> Thanks in Advance.
>
> Saravanan D
>




From mwm at mired.org  Sat May 28 16:19:30 2005
From: mwm at mired.org (Mike Meyer)
Date: Sat, 28 May 2005 15:19:30 -0500
Subject: Help with choice of suitable Architecture
References: <1117299643.380598.5540@g47g2000cwa.googlegroups.com>
	<mailman.221.1117304620.18027.python-list@python.org>
	<atgh91hlophgsuio8qctrht31q03mght4b@4ax.com>
	<1117311160.307176.216430@o13g2000cwo.googlegroups.com>
Message-ID: <86acmfumr1.fsf@guru.mired.org>

"Rob Cowie" <cowie.rob at gmail.com> writes:

> Paul..... I agree that client-side scripting increases the level of
> compexity, but did it really go out of fashion with pop-ups? It seems
> to be just getting started. Google use it to great effect.... maps,
> suggest etc. I wasn't thinking of using it to deal with any 'business
> logic', just to add some dynamism to the interface - use
> XMLhttprequests, a bit of DOM scripting etc.

It's clearly not gone. Just remember, that people do turn it off for
security reasons. Doing so also does a good job of killing popups and
the like. I normally run with JavaScript off, and the local city
government has installed IE with it disabled on all their desktops.

So make sure the functionality of the site doesn't require javascript
to be enabled. This may require duplicating functionality, but you can
save your design by hiding the non-javascript version of the
functionality in a <noscript> element.

         <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From peter at engcorp.com  Thu May  5 07:45:33 2005
From: peter at engcorp.com (Peter Hansen)
Date: Thu, 05 May 2005 07:45:33 -0400
Subject: annonymous functions -- how to
In-Reply-To: <1115264804.625020.203800@f14g2000cwb.googlegroups.com>
References: <1115239458.776800.240080@g14g2000cwa.googlegroups.com>
	<d5bdip$bpp$05$2@news.t-online.com>
	<42795acb.685370470@news.oz.net>
	<1115264804.625020.203800@f14g2000cwb.googlegroups.com>
Message-ID: <YuWdnVUxIKrdmuffRVn-oA@powergate.ca>

Jason Mobarak wrote:
> What's wrong with:
> 
> def blah():
>   def _ (a, b, c):
>     a = a + 2
>     print "stmt 2"
>     return a+b/c
>   return doSomethingWith(_)
> 
> It's basically "anonymous", it just uses a name that you don't care
> about. AFAIK, it can be immediately clobbered later if need be.
> Otherwise, the function shouldn't be anonymous.

Or even better:

def blah():
    def doJasonsAlgorithm(a, b, c):
       a = a + 2
       print "stmt 2"
       return a+b/c
    return doSomethingWith(doJasonsAlgorithm)

That way you've got reasonably self-documenting code, and don't have to 
face an annoyed maintainer saying "what a jerk: he didn't comment this 
or even give it a useful name... idiot... grumble grumble."

I doubt there's a valid usecase for a "anonymous" function that has more 
than a line or two.  Personally, I don't think there's a good usecase 
for an anonymous function longer than one line...

-Peter


From claird at lairds.us  Wed May 18 20:08:02 2005
From: claird at lairds.us (Cameron Laird)
Date: Thu, 19 May 2005 00:08:02 GMT
Subject: Is Python suitable for a huge, enterprise size app?
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>
	<428B8157.9080005@pythonapocrypha.com>
	<200505182108.03701.python@ehp2.hostinx.com>
	<mailman.166.1116448612.8733.python-list@python.org>
Message-ID: <bk1tl2-8e.ln1@lairds.us>

In article <mailman.166.1116448612.8733.python-list at python.org>,
Dave Brueck  <dave at pythonapocrypha.com> wrote:
			.
			.
			.
>Just because the app itself is very OO, it doesn't always follow that the 
>database level needs to be - there are lots and lots of problems for which 
>normal RDBMS tables & joins are a pretty darn good fit. (I'm not trying to 
			.
			.
			.
While all of Dave's follow-up seems to me accurate and pertinent,
this sentence in particular inspires me to write, "Me, too."


From lycka at carmen.se  Thu May 19 05:57:28 2005
From: lycka at carmen.se (Magnus Lycka)
Date: Thu, 19 May 2005 11:57:28 +0200
Subject: Is Python suitable for a huge, enterprise size app?
In-Reply-To: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>
Message-ID: <d6hnu8$gm4$1@wake.carmen.se>

john67 wrote:
> The company I work for is about to embark on developing a commercial
> application that will cost us tens-of-millions to develop.  When all is
> said and done it will have thousands of  business objects/classes, 
Ok, that sounds like a big app, but does it really have to be like
that, or is that something you imagine because things usually get
that complex using other tools?

In my experience, development costs grow faster than linearly with
class model size. (Of course, this is true regardless of programming
language.)

Prototyping things with Python is often an good way to discover simpler
ways of handling a problem, and it's not unheard of that a Python
prototype is good enough to keep as the final implementation.

Thus, apart from the fact that you typically meed much less code to
develop the same functionality in Python than in Java, you might also
discover that you can do things in a smarter way which reduces you
application size even more.

There are plenty of descriptions of successful use of Python at:
http://www.pythonology.com/

Of course, every language has a sweetspot, and particularly if you
have a bunch of experienced Java developers who will think in Java
idioms whatever language they code in, they might end up building
a really stupid system in Python. Perhaps you should also read:
http://dirtsimple.org/2004/12/python-is-not-java.html
http://dirtsimple.org/2004/12/java-is-not-python-either.html

> some
> of which will have hundreds-of-thousands of instances stored in a DB.
That sounds like a moderately sized database.Hundreds of thousands of
new entries per month might be big if you need to keep data for years,
but this doesn't seem to be a limiting factor for you assuming a system
which uses a real database backend.

> Our clients will probably have somewhere between 50-200 users working
> on the app during the day, possibly in mutiple offices, and then a
> large number of batch processes will have to run each night. 

This is not a problem in itself. There are a number of different ways
to partition such a system between clients and different kinds of
servers, but it can certainly be done in Python.

> It will
> also need to have a web interface for certain users.  It needs to be
> robust, easy to maintain, and able to be customized for each client.

This sounds like a good fit. Python is at least excellent for the
customization part. I'll talk about how we do that here at Carmen
Systems at the Europython conference in June. Slides will be available.
Mail me if you want to have a look at a draft.

We basically use Python for customization and use C++ for the core code.
Python and C++ is a very good mix. Java and CPython might not be such
a good fit, but that depends a bit what your intentions with Java is.
(E.g. is JNI ok, or is hardware independence considered very important?)

Java/Jython is a better pair of course, but Jython has few maintainers
and is a few versions behind CPython.

> Right now it looks like Java is the language of choice that the app
> will be developed in. However, I have been looking and reading a lot
> about Python recently and it seems to me that Python could handle it.

To be perfectly honest, I'd be very wary to stick out my neck and be
a Python champion if my trust in Python was based only on reading...
As a manager I'd also find it rather unconvincing...

Let me put it this way: Python has a potential to make your system
better, and to reach your goals in a shorter time. It fits very well
with an agile approach, and in most systems of the kind I imagine you
intend to build, agile development is very helpful in tracking project
progress. You produce *real* programs early, not a lot of paperwork
which a year later turns out to represent a misunderstanding of the
actual problem, or how an effective solution should behave.

I think it would be worthwile to investigate what Python could mean to
you. It might certainly be very useful in the toolbox of the developers.
It might be just a tool to aid in the development, it might be used as
a glue language to connect interacting components written in other
languages (Java, C++, C# etc), it might be an embedded macro language,
a prototyping tool, or the implementation language for at least parts
of the application.

After all, one tool is unlikely to fit all tasks.

Why not hire a well respected Python trainer for a few days, let a few
developers learn Python and explore how it could fit into your system.

> The big attraction to me is the developer productivity.  It seems that
> if Python can handle it, then we could gain a huge savings by using
> Python instead of Java from a productivity standpoint alone.

Quite possible, but the choice of programming language(s) is just one
of many very important decisions that determine the outcome of a
software development project.

> So, given the very general requirements in the first paragraph, do you
> think that Python could handle it?  If anyone has direct experience
> developing large apps in Python, I would appreciate your insight.

You might want to consult with e.g. Marc-Andre Lemburg, who has
experience in developing large business apps in Python. (See
http://www.egenix.com/ )

> Based on the responses I get, I am planning on writing a proposal to my
> management to consider Python instead of Java.

Consider suggesting it as a complement.


From Cryptogram29 at gmail.com  Tue May 17 12:56:49 2005
From: Cryptogram29 at gmail.com (crypto)
Date: 17 May 2005 09:56:49 -0700
Subject: newbie running IDLE with command line arguments
Message-ID: <1116349009.098767.317970@g44g2000cwa.googlegroups.com>

Hi,

I am trying to use IDLE in order to test my program. My program is the
following:

import sys, socket
size = 1024
host, port, message = sys.argv[1], int(sys.argv[2]), sys.argv[3]
print host

How do I run this program on IDLE? I trying Run->Run Module but it
gives me:

Traceback (most recent call last):
  File "C:\Python24\userprograms\simpleclient.py", line 5, in
-toplevel-
    host, port, message = sys.argv[1], int(sys.argv[2]), sys.argv[3]
IndexError: list index out of range

How do I enter the command arguments?

Thanks,
C29



From lsumnler at uniqueinsuranceco.com  Mon May 30 09:34:48 2005
From: lsumnler at uniqueinsuranceco.com (LenS)
Date: 30 May 2005 06:34:48 -0700
Subject: Newbie learning OOP 2nd ?
In-Reply-To: <1117459142.635799.100520@g47g2000cwa.googlegroups.com>
References: <1117456531.293218.134650@g44g2000cwa.googlegroups.com>
	<1117459142.635799.100520@g47g2000cwa.googlegroups.com>
Message-ID: <1117460088.675508.306100@g43g2000cwa.googlegroups.com>

Thank you for your suggestion and especially your time.   I will study
your code:-)

Len Sumnler



From mwm at mired.org  Thu May 26 18:02:29 2005
From: mwm at mired.org (Mike Meyer)
Date: Thu, 26 May 2005 17:02:29 -0500
Subject: concurrent access to object file
References: <002e01c55fd3$d5944790$7b0e10ac@hegel>
	<mailman.151.1117141975.18027.python-list@python.org>
Message-ID: <86sm09wsqy.fsf@guru.mired.org>

"Frank Abel" <frankabel at tesla.cujae.edu.cu> writes:

> Hi again!
>
> I will make the question more simple:
>
> If two call to the "write" method of a file object "occur simultaneously "
> is totally sure that the data of each call is writen successive or exist the
> posibility of merge data?

Youv'e asked this before and failed to get an answer. I think you
failed to get an answer because there isn't a definitive one.

fileobject.c passes calls to the the write method to the C library
fwrite call. How that behaves under simultanious access depends on the
library implementation, and that probably depends on the underlying
OS. On Unix, that probably depends on how you got the file descriptors
the two file objects are using for I/O.

> where I can find information about this?

Check the C and system library documentation for the platform you're
running on.

If you want to make your code portable, don't do this.

   <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From vcsekhar007 at yahoo.com  Sun May  8 23:43:23 2005
From: vcsekhar007 at yahoo.com (V.C.Sekhar)
Date: Mon, 09 May 2005 03:43:23 -0000
Subject: Outlook-MAPI
Message-ID: <d5mm8r+v84d@eGroups.com>

Hi there,

            Can any one please help in getting me Python-Outlook 
programming issue clarified.

 

I just wanted to do the following using Python:

1)Open a New Oulook Mail Window

2) Fill the field: to-email address and Write some body to it.(I 
DON't want to send it automatically)

 

That's all. But, I am getting an error when I try to initiate the 
MAPI-Session using 

    object = win32com.client.Dispatch("Outlook.Application")

    ns = object.GetNamespace("MAPI")

    mapi = win32com.client.dynamic.Dispatch("MAPI.session")

 

Error I see is :

  File "C:\Program Files\GNU\WinCvs 2.0\Macros\TemplateCvsMacro.py", 
line 140, in SendMAPIMail

    mapi = win32com.client.Dispatch("MAPI.session")

  File "C:\Python24\Lib\site-packages\win32com\client\__init__.py", 
line 95, in Dispatch

    dispatch, userName = dynamic._GetGoodDispatchAndUserName
(dispatch,userName,clsctx)

  File "C:\Python24\Lib\site-packages\win32com\client\dynamic.py", 
line 91, in _GetGoodDispatchAndUserName

    return (_GetGoodDispatch(IDispatch, clsctx), userName)

  File "C:\Python24\Lib\site-packages\win32com\client\dynamic.py", 
line 79, in _GetGoodDispatch

    IDispatch = pythoncom.CoCreateInstance(IDispatch, None, clsctx, 
pythoncom.IID_IDispatch)

pywintypes.com_error: (-2147221005, 'Invalid class string', None, 
None)

 

Can any one please help me in this regard.

 

Thanks,

Sekhar





From hemanthps at gmail.com  Fri May 13 05:46:06 2005
From: hemanthps at gmail.com (hemanth)
Date: 13 May 2005 02:46:06 -0700
Subject: Encryption with Python?
References: <1115324411.952821.150780@o13g2000cwo.googlegroups.com>
	<d5i0as$ejd$1@sea.gmane.org>
	<mailman.134.1115466844.29826.python-list@python.org>
Message-ID: <1115977566.116920.188980@g49g2000cwa.googlegroups.com>

Anthra Norell wrote:
> Thanks a lot for the feedback. This is certainly a great learning
> experience. It's a fascinating topic too. Without wishing to annoy,
I'd be
> interested in knowing more. I insert questions below.
>
>

You can google your questions and you will find them out answered in
many
cryptography FAQs. For a less mathematical, but entertaining treatise
on
cryptography, read Simon Singh's "The Code Book". You will definitely
appreciate how the various crypto algorithms through the history of
mankind
were broken and what is the state of the art in the field.



From jdc at uwo.ca  Sun May  1 22:32:13 2005
From: jdc at uwo.ca (Dan Christensen)
Date: Sun, 01 May 2005 22:32:13 -0400
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <Zj2de.78345$a42.5091422@phobos.telenet-ops.be>
References: <d4u60o$akh$1@news2.netvision.net.il>
	<mailman.47.1114818531.14961.python-list@python.org>
	<1114924100.296223.114020@g14g2000cwa.googlegroups.com>
	<1114927892.321086.60190@z14g2000cwz.googlegroups.com>
	<zX%ce.78213$ft1.5056576@phobos.telenet-ops.be>
	<Zj2de.78345$a42.5091422@phobos.telenet-ops.be>
Message-ID: <8764y29x3m.fsf@uwo.ca>

Roel Schroeven <rschroev_nospam_ml at fastmail.fm> writes:

> There's no level 12 yet though.

Now there's a 12 and a 13 (at least!).

Dan


From davenport at online.ora.com  Sun May 15 03:34:36 2005
From: davenport at online.ora.com (davenport at online.ora.com)
Date: Sun, 15 May 2005 07:34:36 UTC
Subject: Transparenz ist das Mindeste
Message-ID: <a084.ab7932debf9c@online.ora.com>

Lese selbst:
http://www.npd.de/npd_info/deutschland/2005/d0405-39.html


From sezhunter at yahoo.com.au  Mon May  9 00:55:04 2005
From: sezhunter at yahoo.com.au (Sez)
Date: 8 May 2005 21:55:04 -0700
Subject: clear the files using python
Message-ID: <1115614504.045200.59420@o13g2000cwo.googlegroups.com>

Hi,

I'm not a programmer. I start working as text miner and as a first task
I have given 1000 dirty files that needs to be cleaned before
classification tasks. I have been told python is the best tool for this
job.

Each file's structure as below:

Comments: This is article 1965 obtained from the website
Title: Banana Report #65, September 2003
Author: dylab
Date: 1st September 2003
Section: pulse

In the past month:
A mass hit North America, cutting electricity to 50 million people
across the North east


I'm expected execute the python script so the file suppose to look like
this:

pulse, In, the, past, month, A, mass, hit, North, America, cutting,
electricity, to, 50, million, people, across, the, North east, dylab

Could you please point me to right direction here. Or provide some
example code. In the mean time I'll be searching myself. I know you
guys hate novice people like me but I would appreciated if you could
provide little help here.

Thanks & regards,
Sez



From exarkun at divmod.com  Mon May 23 16:58:00 2005
From: exarkun at divmod.com (Jp Calderone)
Date: Mon, 23 May 2005 20:58:00 GMT
Subject: line-by-line output from a subprocess
In-Reply-To: <1116879724.884768.180250@f14g2000cwb.googlegroups.com>
Message-ID: <20050523205800.559.668883065.divmod.quotient.7967@ohm>

On 23 May 2005 13:22:04 -0700, Simon Percivall <percivall at gmail.com> wrote:
>Okay, so the reason what you're trying to do doesn't work is that the
>readahead buffer used by the file iterator is 8192 bytes, which clearly
>might be too much. It also might be because the output from the
>application you're running is buffered, so you might have to do
>something about that as well.
>
>Anyway, if the output from the child application is unbuffered, writing
>a generator like this would work:
>
>def iterread(fobj):
>    stdout = fobj.stdout.read(1) # or what you like
>    data = ""
>    while stdout:
>        data += stdout
>        while "\n" in data:
>            line, data = data.split("\n", 1)
>            yield line
>        stdout = fobj.stdout.read(1)
>    if data:
>        yield data,
>

Or, doing the same thing, but with less code:

    def iterread(fobj):
        return iter(fobj.readline, '')

Haven't tried this on subprocess's pipes, but I assume they behave much the same way other file objects do (at least in this regard).

Jp


From fredrik at pythonware.com  Wed May 11 12:36:42 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Wed, 11 May 2005 18:36:42 +0200
Subject: Question about XML Parser in Python.
References: <192.3fb90e92.2fb35cae@aol.com>
Message-ID: <d5tbsh$p3m$1@sea.gmane.org>

Amitpython5 at aol.com wrote:

>   Well, I'm fairly new to Python and have encountered a strange error  while
> reading an XML document in Python. I used the SAX parser, and my input XML  is
> fairly large with 300000 records. I extract about 25 fields from each record
> and spit out a csv file. The strange thing is that after about 2000 records,
> some value (one of the 25) is missing in the csv file, so it just appears as
> ',,', as if the value was missing from the Input file. I checked the Input
> file  and all values are intact.

you're aware that you can get multiple calls to the character data handlers
for each character data section?  (in other words, you cannot just use the
text you get in the first call; you have to collect text sections until you see
an end tag).

alternatively, you can forget about SAX and use a better tool.  tools that
let you iterate over subtrees are a lot easier to use, and can be faster too.

here's the elementtree solution:

    from elementtree.ElementTree import iterparse

    for event, elem in iterparse(source):
        if elem.tag == "record":
            # ... process record elements ...
            elem.clear()

    http://effbot.org/zone/element-iterparse.htm

(if speed is important, the cElementTree implementation of iterparse is ~5x
faster than Python's standard SAX library)

</F>





From jjl at pobox.com  Fri May 13 17:06:46 2005
From: jjl at pobox.com (John J. Lee)
Date: 13 May 2005 21:06:46 +0000
Subject: Python Documentation (should be better?)
References: <5C99C308457E6D4EA5448EA52A66004A675A6E@or.mxim.com>
	<17026.26789.592527.975821@montanaro.dyndns.org>
	<mailman.398.1115843305.29826.python-list@python.org>
	<3eishfF3d6ujU1@individual.net>
Message-ID: <87vf5mkf89.fsf@pobox.com>

Greg Ewing <greg at cosc.canterbury.ac.nz> writes:

> Ivan Van Laningham wrote:
> > Hi All--
> > The Python docs are not ideal.  I can never remember, for instance,
> > where to find string methods (not methods in the string module, but
> > methods with '')
> 
> Curiously I had the same problem just the other day,
> except with list instead of string. I think the problem
> is that the sections on the actual built-in types
> (list, str, dict, etc.) are one level too far down
> to appear in the table of contents of the Library
> Reference.
> 
> If things could be rearranged so that their names
> actually appeared in the table of contents, I think
> it would make a big difference in this area.
[...]

+1


John


From danricofer at gmail.com  Wed May 25 19:07:19 2005
From: danricofer at gmail.com (Daniel)
Date: 25 May 2005 16:07:19 -0700
Subject: import cx_Oracle fails!
In-Reply-To: <428f2b1f$0$1819$6c56d894@reader0.news.be.easynet.net>
References: <1116454404.355741.51730@f14g2000cwb.googlegroups.com>
	<mailman.204.1116506008.8733.python-list@python.org>
	<1116546336.235595.19700@o13g2000cwo.googlegroups.com>
	<1116547117.316065.104030@o13g2000cwo.googlegroups.com>
	<428f2b1f$0$1819$6c56d894@reader0.news.be.easynet.net>
Message-ID: <1117062439.523191.259710@z14g2000cwz.googlegroups.com>

Hi Bernard

My system is a PA 8K series with 4096 MB and 2 processors, running 64
bit mode OS.

I only created the recipe above after 1 week of mistakes :-), but I
don't know if it will work with your branch of patches @ 11.23 version.


I really hate HP-UX >-(, god bless BSD!!! :-D



From pgmoscatt at optushome.com.au  Tue May 10 04:49:16 2005
From: pgmoscatt at optushome.com.au (Peter Moscatt)
Date: Tue, 10 May 2005 18:49:16 +1000
Subject: Does TKinter Have A Grid ?
Message-ID: <pan.2005.05.10.08.49.16.621818@optushome.com.au>

Does TKinter have a Grid widget ?
If not (as I assume), what is the alternative ?

Pete



From sylvain.thenault at logilab.fr  Wed May  4 05:30:42 2005
From: sylvain.thenault at logilab.fr (Sylvain Thenault)
Date: Wed, 04 May 2005 11:30:42 +0200
Subject: twisted jabber and xmlstream
References: <d58b1a$2pa$1@news-int2.gatech.edu>
Message-ID: <pan.2005.05.04.09.30.35.851070@logilab.fr>

On Tue, 03 May 2005 17:05:46 +0000, Operation Latte Thunder wrote:

> I am playing around with Jabber with Twisted.  I can receive messages just
> fine, and thats great, however, I am a bit confused about how to actually
> _send_ messages.  From what I've seen, I need to call send() on the
> xmlstream I get when I am auth'd... and thats where I get stuck.  Do I
> need to create the jabber message documents myself, or are there factory
> methods that create message, presence, iq, etc messages for me.

you have to create jabber elements by yourself, using the
twisted.xish.domish package.

> Better yet, does anybody have an example on the web somewhere?

you can find some examples in our fatima project, a jabber bot testing
client, available at http://www.logilab.org/projects/fatima/0.1
You'll find a jabber.py module in the distribution containing jabber
related code.

hope that helps
-- 
Sylvain Th?nault                               LOGILAB, Paris (France).

http://www.logilab.com   http://www.logilab.fr  http://www.logilab.org




From dfreem3 at nospam.shaw.ca  Wed May 11 13:10:04 2005
From: dfreem3 at nospam.shaw.ca (don freeman)
Date: Wed, 11 May 2005 17:10:04 GMT
Subject: Jesus said, "I am the way, the truth and the life: no one can
	come to the Father(God)(in Heaven),
	but by me." (John 14:6) This means that
	if you die without trusting in Jesus Christ as your Lord and Saviour
	you
	will die in your sins and be forever separated from the love of God in
	a
	place called Hell. The Holy Bible descibes Hell as a place of eternal
	torment, suffering,
	pain and agony for all those who have rejected Jesus Christ. The
	good news is that you can avoid Hell by allowing Jesus Christ to save
	you
	today. Only then will you have true peace in your life knowing that no
	matter
	what happens you are on your way to Heaven. by BluWater0523@yahoo.com
In-Reply-To: <1115824563.613661.169620@g47g2000cwa.googlegroups.com>
References: <1115824563.613661.169620@g47g2000cwa.googlegroups.com>
Message-ID: <M%qge.1317047$Xk.244810@pd7tw3no>

The truth is, Jesus should never have torn down the fig tree. He got so 
pissed off at the fig tree for not having figs, even though it wasn't 
fig season. This was not the action of someone who has even a little 
truth and light.

Imagine if Jesus came back now. I'd hate to see his road rage.



From zunbeltz at gmail.com  Fri May 13 10:47:34 2005
From: zunbeltz at gmail.com (Zunbeltz Izaola)
Date: Fri, 13 May 2005 16:47:34 +0200
Subject: stop a thread safetely
References: <pan.2005.05.13.12.06.14.991870@gmail.com>
	<UvCdnaGDcsHBOhnfRVn-vg@powergate.ca>
Message-ID: <pan.2005.05.13.14.47.34.35565@gmail.com>

On Fri, 13 May 2005 09:10:13 -0400, Peter Hansen wrote:

> 
> How did you intend to stop the thread in a manner which might be unsafe?
> (Hint, unless you're doing something unusual, you can't.)
> 

I have a threaded object (Mythread). It checks if want_thread
variable is True to return. The problem is that this object 
execute a function that is a tcp comunication

    def Client(self,Request,Answer):
        totalsent = 0
        while totalsent < 608:
            sent = self.sock.send(Request.struct2string()[totalsent:])
            if sent == 0:
                raise RuntimeError, "socket broken"
            totalsent = totalsent + sent

        if Request.Codigo != 37:
            self.WriteLog("Request",Request)
        data = self.sock.recv(608)
        Answer.string2struct(data)
        if int(Answer.Param[9]) != 37:
            self.WriteLog("Answer",Answer)


The Client function send a Request (them write it in a log file),
gets and answer and and write it. The problem is that when i stop
the thread a get somethime the Request writed but not the answer,
as if the funciton Client returns before it ends.

Zunbeltz

> -Peter



From dbrown2 at yahoo.com  Tue May 17 07:32:52 2005
From: dbrown2 at yahoo.com (Davo)
Date: 17 May 2005 04:32:52 -0700
Subject: Python Documentation (should be better?)
In-Reply-To: <mailman.392.1115839574.29826.python-list@python.org>
References: <d5tjng$kae$1@sea.gmane.org><d5tke6$kae$2@sea.gmane.org>
	<mailman.392.1115839574.29826.python-list@python.org>
Message-ID: <1116329572.214628.244280@z14g2000cwz.googlegroups.com>

Overall organization is definitely an issue, at least for newer users.
As an occasional python user I remain constantly in a mode of having to
look up basic terminology for examples and exact spelling of terms in
order to knock out a quick script.  I feel very much like Mr. Bottaro
that the docs, while quite good in some ways, can be frustrating and
inconsistent at times.  Here's a link to a concrete and mostly real
stream of consciousness example of using the docs: (rather long)

http://home.pacbell.net/dl_brown/input_something.txt

Many responses from experienced users that show how to find a certain
piece of information really miss the point by a wide margin.  It's nice
that they can find the information easily of course.  It's those who
don't have the experience who can have more trouble.  If the docs,
especially the tutorial, are intended to help those with limited
experience they should try to be a little more fool-proof with regard
to indexing and searching, and also have more basic examples.

Here are a couple specific suggestions for improvements:

-- Please add the basic input methods to the Input/Output section of
the tutorial (see previous link and the original post for this thread)

-- Add a Doc_Feedback button on many of the documentation pages so when
people have problems finding or understanding something they can
immediately and easily send feedback about that specific problem.

-- Consider at least renaming and reordering the main doc page links to
highlight the most important 2 or 3 docs for people who don't know
where to start.  Right now the doc structure is too flat and
disconnected in my opinion.  It needs to act more like a funnel. Today
I have to pick which document might contain the information I need and
if I'm wrong I probably won't find what I'm looking for quickly.  The
present structure seems to work ok for experts, not so well for
novices.

-- If doc maintainers believe the better approach for most people is to
just search (I don't) then move the doc links to the side, put them in
a smaller font, and put a big search box in the middle of the docs
page.  Right now search is in the far corner so the implicit
understanding is that it's not the first thing to try.

-- Find clearer names/descriptions for some documents.  For example
maybe it's just me but what is the "_Library_ Reference"?  I know about
python modules and python language, etc.  What are python libraries.
Or is it just intended to mean generically a book in a library of
python books?  There was some discussion and debate about which doc was
the "Manual"  Perhaps one of the docs or a reorganized combination
should be called the Python Online Manual if "Manual" Implies that it's
the go-to book.

-- And finally, I recall the last time I tried to figure out how to do
something with a date value I looked in the datetime module.  There are
lots of sophisticated tools apparently but I really never grasped how
to go about using them.  A couple basic examples of what can be done
with the tools would be nice.

--  TkInter... (ok I'm done now)

>>> help(tKinter)
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
NameError: name 'tKinter' is not defined
>>> help('tkinter')
no Python documentation found for 'tkinter'

>>> help('tKinter')
no Python documentation found for 'tKinter'

>>> help('TkIinter')
no Python documentation found for 'TkIinter'

>>> help('TkInter')
no Python documentation found for 'TkInter'

>>> help('Tkinter')

Help on module Tkinter:  (don't believe it)


-- David



From jasondrew72 at gmail.com  Thu May 19 12:13:13 2005
From: jasondrew72 at gmail.com (Jason Drew)
Date: 19 May 2005 09:13:13 -0700
Subject: Convert from numbers to letters
In-Reply-To: <1116511005.900715.107260@o13g2000cwo.googlegroups.com>
References: <1116511005.900715.107260@o13g2000cwo.googlegroups.com>
Message-ID: <1116519193.037429.93560@o13g2000cwo.googlegroups.com>

It seems strange to want to set the values in actual variables: a, b,
c, ..., aa, ab, ..., aaa, ..., ...

Where do you draw the line?

A function seems more reasonable. "In terms of lines of code" here is
my terse way of doing it:

nrFromDg = lambda dg: sum(((ord(dg[x])-ord('a')+1) * (26 **
(len(dg)-x-1)) for x in xrange(0, len(dg))))

Then, for example
    nrFromDg("bc")
gives
    55
and
    nrFromDg("aaa")
gives
    703
and so on for whatever you want to evaluate.

This is efficient in terms of lines of code, but of course the function
is evaluating ord("a") and len(dg) multiple times, so it's not the most
efficient in terms of avoiding redundant calculations. And
nrFromDg("A") gives you -31, so you should really force dg into
lowercase before evaluating it. Oh, and it's pretty hard to read that
lambda expression.

"Least amount of code" == "best solution"
False



From yael at gmx.net  Fri May 13 08:32:17 2005
From: yael at gmx.net (Thomas Pfaff)
Date: Fri, 13 May 2005 14:32:17 +0200
Subject: working directory for debugging in pythonwin
In-Reply-To: <42848dd5$1_1@spool9-west.superfeed.net>
References: <3eem0kF2ngvjU1@individual.net> <4283A2DE.7030503@sympatico.ca>
	<3ejeq4F3di4bU1@individual.net>
	<42848dd5$1_1@spool9-west.superfeed.net>
Message-ID: <3ejl12F3h0lgU1@individual.net>

Roger Upole schrieb:
> You could pass the directory in as an optional extra argument
> to the script.  Alternately, you might accept either a bare file name
> or a full path.
> 
>         Roger
> 
> 

Yes, that's true, and I suppose it's good programming style not to
depend on a special working directory. On the other hand I'd like to
reduce the amount of command line parameters passed into the script, and
I definitely dislike the thought of havin a 'standard' working_dir=
keyword in all my scripts just because my debugger needs it.

Basically I'm used to being able to set an arbitrary working directory
from MS Developer Studio, and I wanted to know before I would contact
Mark Hammond directly, if there is anything else than workarounds for
this problem.

Cheers,


Thomas


From eurleif at ecritters.biz  Fri May 27 19:05:36 2005
From: eurleif at ecritters.biz (Leif K-Brooks)
Date: Fri, 27 May 2005 23:05:36 GMT
Subject: Case Sensitive, Multiline Comments
In-Reply-To: <119esm411fhf278@news.supernews.com>
References: <1117137316.140791.210430@g14g2000cwa.googlegroups.com><8664x5y92g.fsf@guru.mired.org>
	<429654DA.9050903@lexicon.net><1117154013.092736.298310@g14g2000cwa.googlegroups.com><qc7d9112aqr5tj8devjeaign84dc21ti8p@4ax.com><Xns96635F84E6901duncanbooth@127.0.0.1><119eccdgjtaru5d@news.supernews.com><Xns9663A707DDEF9duncanbooth@127.0.0.1>
	<mailman.191.1117214795.18027.python-list@python.org>
	<119esm411fhf278@news.supernews.com>
Message-ID: <4JNle.9585$5I5.791898@newshog.newsread.com>

John Roth wrote:
> "Elliot Temple" <curi at curi.us> wrote in message
> news:mailman.191.1117214795.18027.python-list at python.org...
> 
>> One other interesting thing about case sensitivity I don't think 
>> anyone has mentioned: in Python keywords are all lowercase already 
>> (the way I want to type them).  In some other languages, they aren't...
> 
> Not quite. None, True and False are upper case.

But those aren't keywords. (Well, None is a pseudo-keyword in Python
2.4, but...)


From nico at bidon.fr  Thu May 19 05:28:58 2005
From: nico at bidon.fr (Nicolas Pourcelot)
Date: Thu, 19 May 2005 11:28:58 +0200
Subject: wxpython and wxtextctrl
In-Reply-To: <A3Nie.2586$X92.1894@newsread2.news.pas.earthlink.net>
References: <428b8033$0$1342$626a14ce@news.free.fr>
	<A3Nie.2586$X92.1894@newsread2.news.pas.earthlink.net>
Message-ID: <428c5c53$0$23046$626a14ce@news.free.fr>

Ok, as I guessed, it was Boa installation which changed the wxpython 
version used.
I removed Boa...
Thanks !
Nicolas

Greg Krohn a ?crit :
> Nicolas Pourcelot wrote:
> 
>> Hello,
>> my script worked well until today : when I tried to launch it, I got 
>> the following :
>>
>>     frame = MyFrame(None,-1,"Geometrie",size=wx.Size(600,400))
>>   File "/home/nico/Desktop/wxGeometrie/version 0.73/geometrie.py", 
>> line 74, in __init__
>>     self.commande.Bind(wx.EVT_CHAR, self.EvtChar)
>> AttributeError: wxTextCtrl instance has no attribute 'Bind'
>>
>> (self.commande is a wxTextCtrl instance)
>> I don't understand : why did wxTextCtrl lost its Bind attribute ??
>> As there's not so much changes on my computer since yesterday, I 
>> suppose this is due to Boa package installation on my Ubuntu Hoary ?
>> Does Boa installation changes wxpython version ?
>> Is wxTextCtrl attribute .Bind() obsolete ??
>>
>> Thanks,
>> Nicolas
> 
> 
> control.Bind is relativly new. The wxTextCtrl notation (vs wx.TextCtrl) is
> the old way (but it IS kept around for backwards compatablility). My guess
> is that your code is for for a newer version of wxPython than what you
> actually have.
> 
> Try printing the version from in your code:
> 
> import wxPyhon
> print wxPython.__version__
> self.commande.Bind(wx.EVT_CHAR, self.EvtChar)
> 
> -greg
> 


From steven.bethard at gmail.com  Fri May 27 22:24:49 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Fri, 27 May 2005 20:24:49 -0600
Subject: Get number of lines in file
In-Reply-To: <mailman.197.1117222219.18027.python-list@python.org>
References: <1117221428.788567.10060@f14g2000cwb.googlegroups.com>
	<mailman.197.1117222219.18027.python-list@python.org>
Message-ID: <TfCdnczaYsftSwrfRVn-pg@comcast.com>

Elliot Temple wrote:
> 
> On May 27, 2005, at 12:17 PM, ssmith579 at aol.com wrote:
> 
>> I have read in a file and need to get the number of lines.
>>
>>     cpn_file = open('Central Part number list.txt')
>>     cpn_version = cpn_file.read().split('\n')
>>
>> I want to know the number of elements in cpn_version.
> 
> Could you use:
> 
> count_lines = len(cpn_file.readlines())

Or if you're worried about reading all of cpn_file into memory at once, 
you could try something like:

     sum(1 for line in cpn_file)

or in Python 2.3:

     sum([1 for line in cpn_file])

STeVe


From mhartl at post.harvard.edu  Sun May  1 17:27:26 2005
From: mhartl at post.harvard.edu (Michael Hartl)
Date: 1 May 2005 14:27:26 -0700
Subject: Whats the best Python Book for me
References: <20050501202910.15422.1161950491.divmod.quotient.12335@ohm>
	<mailman.89.1114982254.14961.python-list@python.org>
Message-ID: <1114982846.071182.242270@z14g2000cwz.googlegroups.com>

I'd like to second the recommendation for the Python Cookbook.  As an
experienced programmer, you'll learn a lot by osmosis.

Michael



From skip at pobox.com  Fri May 13 15:31:37 2005
From: skip at pobox.com (Skip Montanaro)
Date: Fri, 13 May 2005 14:31:37 -0500
Subject: Python Documentation (should be better?)
In-Reply-To: <428467b1$0$5860$626a14ce@news.free.fr>
References: <5C99C308457E6D4EA5448EA52A66004A675A6E@or.mxim.com>
	<17026.26789.592527.975821@montanaro.dyndns.org>
	<mailman.398.1115843305.29826.python-list@python.org>
	<428276e8$0$318$626a14ce@news.free.fr>
	<mailman.411.1115854727.29826.python-list@python.org>
	<428467b1$0$5860$626a14ce@news.free.fr>
Message-ID: <17029.153.642983.314209@montanaro.dyndns.org>


    bruno> I fail to see why would it would be better to have to open a
    bruno> browser, go to python.org, go to the doc, find the right link etc
    bruno> instead of just typing dir(xxx) and/or help(xxx).

Actually, you frequently don't even have to enter the Python interpreter.
Executing "pydoc -p 8080" will start up a web server at
http://localhost:8080/ that will allow you to browse the builtin docs
(module/package/class/function docstrings).  Since 2.4, the doc display for
most core modules and packages should also contain a link to the standard
doc.

Skip



From kay.schluehr at gmx.net  Wed May 18 15:11:14 2005
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: 18 May 2005 12:11:14 -0700
Subject: Is Python suitable for a huge, enterprise size app?
In-Reply-To: <1116433218.495131.71260@g49g2000cwa.googlegroups.com>
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>
	<1116432325.497438.64580@g49g2000cwa.googlegroups.com>
	<1116433218.495131.71260@g49g2000cwa.googlegroups.com>
Message-ID: <1116443474.565264.176640@g44g2000cwa.googlegroups.com>


john67 wrote:
> Would the allocation/deallocation memory usage issue be different
than
> it would be with Java?  Both Python and Java have automatic garbage
> collection, correct?

In recent Python versions the CPython interpreter offers a
cycle-collector which weakens the most profound counter argument
against reference-counting techniques.

To answer Your initial question: there is probably no technical reason
against Python as a language or the CPython runtime. Both are very
stable and mature. Extension and optimization techniques are well
understood. The library support is great. I would be more concerned
about the development strategy. Be aware that Python is weak in
defining constraints on interfaces even more than Java ( Javas static
type system makes a bit easier what doesn't mean that static typing is
a really adequate solution for it at all ). There are almost no
declarative elements in the language. You have somehow to think about
communicating contracts between different developers across the team.
Elements of lightweight methodologys like continous integration and
early unit-testing are mandatory, not optional. Be also aware that
there are no IDEs / GUI-builders and UML-designers which are comparable
to those for Java or dotNET. You won't come as close to a group
consensus as if You would stick to VisualStudio7 for C#, or
IDEA/Eclipse for Java. 

Regards,
Kay



From andre.roberge at gmail.com  Mon May  9 21:49:06 2005
From: andre.roberge at gmail.com (=?ISO-8859-1?Q?Andr=E9_Roberge?=)
Date: Mon, 09 May 2005 22:49:06 -0300
Subject: Advice needed on __del__
In-Reply-To: <427ffa0d$1@nntp0.pdx.net>
References: <d5o1s1$8h3$1@sea.gmane.org>
	<d5obmp$cqh$1@sea.gmane.org>	<mailman.232.1115672394.29826.python-list@python.org>
	<427ffa0d$1@nntp0.pdx.net>
Message-ID: <d5p3fj$jeh$1@sea.gmane.org>

Scott David Daniels wrote:
> Andr? Roberge wrote:
> 
>>...  Each time I refresh the screen, I could
>>force that call, then check to see if Evil has been
>>destroyed by Python, which would give me the information
>>I need to destroy Evil_twin behind the scene myself -
>>which is what I am really after.
> 
> 
> What might work is to keep a weakref to Evil in Evil_twin.
> Upon refresh, you could check if the weakref has gone stale.
> Is that good enough?

It might be I guess ... but I don't know how to keep a weakref.
(Whips out Python in a Nutshell... yes, it's there :-)

Hmmm... The way my program is structured, Evil_twin gets created
immediately *after* Evil is created.  If it were the reverse, I think I 
could do it, but I am really not sure in this case.

However, I did try it with __del__ as I described, and, after a bit of 
fiddling got it to work perfectly.  I understand about the possible 
platform dependence issue.  However (famous last words follow...) I feel 
it's not going to bite me this time.  The main reason is that, when Evil 
is gone, before the screen gets updated, lots of drawing calls and 
wxYield() calls are made, so that __del__ has lots of time to get called.

===========
For the curious, here's how I do it:
(Sorry, no Jekyll and Hyde here :-(

class UsedRobot(object):
   def __init__(self, ..., parent=Visible_world()):
      # Visible_world is a Singleton - see Python cookbook
      true_robot = parent.addOneRobot(...)    # <---Evil_twin created
      self.robot = parent.robot_dict[true_robot.name]
      self.name = true_robot.name
      self.program = rur_program() # Singleton
      self.parent = parent
      self.parent.object_dict[self.name] = True  # <--- new trick
      self.program.wait_update_refresh(self.robot, self.name)
   def __del__(self):
      self.parent.object_dict[self.name] = False

==== class Visible_world() stuff below:
# lots os stuff omitted
     def DoDrawing(self):

    # start doing lots of background stuff
    # enough time to call __del__ ?

         self.world_image = wxEmptyBitmap(self.maxWidth, self.maxHeight)
         dc = wxMemoryDC()
         dc.SelectObject(self.world_image)
         dc.Clear()
         dc.BeginDrawing()
         self.DrawBackground(dc)
         self.DrawWalls(dc)
         self.DrawBeepers(dc)

     # ok, were we go with the important stuff for this post

         list_to_ignore = []
         for item in self.object_dict:  # see "new trick" above
             if not self.object_dict[item]:
                 list_to_ignore.append(item)

         for name in self.robot_dict:
             if name not in list_to_ignore:
                 self.DrawRobot(dc, name)
         dc.EndDrawing()
         self.updateImage = True



From jstroud at mbi.ucla.edu  Fri May 20 22:40:36 2005
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Fri, 20 May 2005 19:40:36 -0700
Subject: count files in a directory
In-Reply-To: <d6m5e1$cr7$1@solaris.cc.vt.edu>
References: <d6m5e1$cr7$1@solaris.cc.vt.edu>
Message-ID: <200505201940.36156.jstroud@mbi.ucla.edu>


Come to think of it

file_count = len(os.walk(valid_path)[2])

--
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From peter at engcorp.com  Thu May 19 15:34:08 2005
From: peter at engcorp.com (Peter Hansen)
Date: Thu, 19 May 2005 15:34:08 -0400
Subject: Self-modifying Code
In-Reply-To: <1116522647.227661.99290@g43g2000cwa.googlegroups.com>
References: <1116522647.227661.99290@g43g2000cwa.googlegroups.com>
Message-ID: <T42dnWbGiL6hdxHfRVn-sA@powergate.ca>

qwweeeit at yahoo.it wrote:
[regarding "self-modifying code"]
> fNew =open("newModule.py",'w')
> lNew=['print 123\n','print 454\n','print 789\n']
> fNew.writelines(lNew)
> fNew.close()
> from newModule import *

This isn't really self-modifying code (unless you are talking about this 
being a small part of a much larger application which is where the 
import actually occurs), but in any event neither is it the simplest way 
to do what you are trying to do using Python.  The absolute simplest, 
which is largely equivalent to what you've done here, is simply "exec 
'print 123\nprint 456\nprint 789'".  A close relative is the method 
provided by the execfile() standard function (avoiding the import).

> Did you know? Certainly someone has already discovered and applied
> that, because the applications are several (think only to the
> possibility of reducing code length by eliminating the coding of false
> alternatives, or the possibility to convert a list of instructions
> taken somewhere in a running code...)

Those same applications are better served, generally, by doing things 
like parameterizing function definitions on-the-fly, or by dynamically 
binding new methods into objects or classes.  There are many recipes in 
the CookBook or the list archives showing how to do all these sorts of 
things.

I'm afraid the technique you show above, while intriguing to a newcomer 
to Python, has a limited number of use cases, though if one needs to 
modify or generate some small part of a program for later use (requiring 
the basic persistence that your technique has), it is definitely a 
viable technique.

-Peter


From paul at boddie.org.uk  Wed May  4 04:56:41 2005
From: paul at boddie.org.uk (Paul Boddie)
Date: 4 May 2005 01:56:41 -0700
Subject: _RE: Mod_python
Message-ID: <5339b60d.0505040056.6e20cdc4@posting.google.com>

Gensek wrote:
>
> I want to use mod_python, but I'm having trouble. Here's what I have in
> my config:
>
> LoadModule python_module /usr/local/apache2/modules/mod_python.so
>
> <Directory /usr/local/apache2/htdocs/python>
>     AddHandler mod_python .py
>     PythonHandler mptest
>     PythonDebug On
> </Directory>

My guess is that you need to add an Alias directive:

Alias /python /usr/local/apache2/htdocs/python

Otherwise, when you try the following URL...

> http://localhost/python/mptest.py

...Apache/mod_python doesn't know where to find the modules/files in
the filesystem corresponding to the "Web path" /python. Apologies if
you've already done this but didn't mention it.

[...]

> Is there any worthwhile alternative to modpython? I find it rather
> troublesome.

There are certainly a number of different options, and it depends on
how much you want to use the mod_python style of programming as to
which of those options you want to evaluate.

If you like Web programming frameworks using the "publisher style" -
that is, where you write Python functions and classes which correspond
to names in the URL, as in the example here...

http://www.modpython.org/live/current/doc-html/tut-pub.html

...then you might want to consider CherryPy, Quixote and Twisted Web
(amongst others).

If you don't care about (or don't care for) Web programming frameworks
using that style, but like a more "servlet style" approach or
mod_python's "handler style", as in the example here...

http://www.modpython.org/live/current/doc-html/inst-testing.html

...then there's jonpy, Snakelets and Webware (amongst others).

I'm a bit biased when it comes to recommending frameworks, since I
always have to mention WebStack which favours a handler/servlet style
rather than the publisher style, although you can obviously build
publishers on top of it, and there are some helper classes included
for such purposes. However, you'll also want to consider how your
application produces its Web pages and whether you'll want to access
databases really easily or not - some frameworks attempt to cover
those issues as well.

WebStack applications can run on Apache (if you can stomach the
configuration, which isn't that hard once you've done it a few times)
but also on other servers and frameworks (if you'd prefer something a
bit more obvious). It has been said that people don't really need this
flexibility, but even if you aren't deploying on Zope (or whatever)
today, it's surely nice to know that you have the chance at some later
point in time without rewriting lots of code.

Paul

P.S. Start here: http://www.python.org/moin/WebProgramming


From rrr at ronadam.com  Mon May 16 19:05:47 2005
From: rrr at ronadam.com (Ron Adam)
Date: Mon, 16 May 2005 19:05:47 -0400
Subject: Quick Reference from module doc strings.
In-Reply-To: <4288c71e@nntp0.pdx.net>
References: <mailman.65.1116085574.29328.python-list@python.org>	<1116199904.205240.58300@g49g2000cwa.googlegroups.com>	<mailman.15.1116204313.8733.python-list@python.org>	<42880d98$1@nntp0.pdx.net>	<mailman.27.1116217027.8733.python-list@python.org>
	<4288c71e@nntp0.pdx.net>
Message-ID: <4289274B.7010306@ronadam.com>

Scott David Daniels wrote:
> Ron Adam wrote:
> 
>>Do you have any feature suggestions, additional information that could 
>>go in, something that would extend the content in some way and make it 
>>more useful?
>>
>>As it stands now, it could be just a module, so you could...
>>
> 
> The style is still a sticking point for me -- too many evals (a nasty
> lure for evil-doers).

I suppose someone could create an "evil" name in a module that would 
either cause and error when evaluated or evaluate to something other 
than the actual name.

> Recall that sys.modules is a dictionary from module names to modules.
> 
> Any python object (including a module) will return attributes listed
> in a dir(obj) with getattr(obj, attributename).  So, no evals are
> needed in this program at all.

Thanks for suggesting the concise way to to this. It was a todo item.


> I also wonder if you've ever used maxlevel>1.  It seems you'd expand
> to way too many names to be useful.

Yes, it does quickly explode in some cases, I left the maxlevel keyword 
in there because it might be useful as a general function for other 
purposes like building a dependency tree for example.  I haven't 
actually tried that yet, and there's probably better ways to do it.

> Finally, if you use StringIO (or cStringIO), most of your string
> construction can be turned into prints in a way similar to:
> 
>      def printnames(namelist, dest=None):
>          for name in sorted(namelist, key=str.lower):
>              print >>dest, name
> 
>      from cStringIO import StringIO
> 
>      def textnames(namelist):
>          hold = StringIO()
>          printnames(namelist, hold)
>          return hold.getvalue()
> 
> --Scott David Daniels
> Scott.Daniels at Acm.Org

What would be the advantage of using StringIO over list.append with 
''.join()?

I rearranged it somewhat to create a dictionary of object docs.  I think 
this approach will be better for creating lists in different orders 
without having to regenerate the whole thing.

This is where it is now...  (No evals, better organized overall I think)

Cheers, _Ron


# qref.py
"""
Generate a quick reference for a module by analyzing
a modules contents.
"""

def getobjs(obj, objlist=[]):
     """Retreive a list of sub-object (name,object) pairs
     from an object."""
     objlist.append((obj.__name__,obj))
     for name in dir(obj):
         obj2 = getattr(obj,name)
         name = obj.__name__+'.'+name
         if (obj2,name) not in objlist:
             objlist.append((name,obj2))
     return objlist

def getdocdict(objlist):
     """Build a dictionary of docs from an list of
     (name,object) tuples."""
     doc_dict = {}
     for item in objlist:
         doc_dict[item[0]] = getobjinfo(*item)
     return doc_dict

def getobjinfo(name,obj):
     """Build a formated document string from an objects
     __doc__ string, and attribues."""
     strout = []
     strout.append(name+'\n')
     if hasattr(obj, '__module__'):
         strout.append("Module:"+str(obj.__module__)+'\n')
     if hasattr(obj, '__class__'):
         strout.append(str(obj.__class__))
     else:
         strout.append(str(type(obj)))
     strout.append('\n\n')
     if isinstance(obj,str):
         if '\n' in obj:
             quotes='\n"""'
         else:
             quotes ='"'
         s = name+' = '+quotes+obj+quotes
         if len(s)>200:
             s = s[0:200]+"......"
         strout.append( s+'\n\n')
     elif isinstance(obj,(int,bool,tuple,list,dict)):
         s = name+' = '+str(obj)
         if len(s)>200:
             s = s[0:200]+"......"
         strout.append( s+'\n\n')
     if hasattr(obj,'__doc__'):
         d = ''
         if obj.__doc__ == None:
             d = 'None'
         elif obj.__doc__ != type(obj).__doc__:
             d = obj.__doc__
         elif obj is type(type):
             d = obj.__doc__
         if d != '':
             strout.append(d+'\n\n')
     return ''.join(strout)

def quickref(name):
     """
     quickref(module_name) -> printable string

     Generate a sorted quick reference guide from an objects
     doc strings.  The module_name is a string with the name of
     the module or class to get documents string from.

     Example:
         import os
         print quickref('os')
     """
     objlist = getobjs(name)
     docs = getdocdict(objlist)
     dlist = docs.keys()
     dlist.sort(lambda x,y: cmp(x.lower(),y.lower()))
     outstr = []
     outstr.append('-'*40+'\n')
     for d in dlist:
         outstr.append(docs[d])
         outstr.append('-'*40+'\n')
     return ''.join(outstr)

if __name__ == "__main__":
     print quickref(__builtins__)




















From jasondrew72 at gmail.com  Fri May 20 10:01:35 2005
From: jasondrew72 at gmail.com (Jason Drew)
Date: 20 May 2005 07:01:35 -0700
Subject: Convert from numbers to letters
In-Reply-To: <1116596845.792019.40340@g14g2000cwa.googlegroups.com>
References: <1116511005.900715.107260@o13g2000cwo.googlegroups.com>
	<1116519193.037429.93560@o13g2000cwo.googlegroups.com>
	<1116529140.470352.129690@z14g2000cwz.googlegroups.com>
	<mailman.224.1116530388.8733.python-list@python.org>
	<1116535087.901874.167870@g43g2000cwa.googlegroups.com>
	<1116541217.303770.314860@f14g2000cwb.googlegroups.com>
	<1116596845.792019.40340@g14g2000cwa.googlegroups.com>
Message-ID: <1116597695.435210.24030@g49g2000cwa.googlegroups.com>

Sorry, scratch that "P.S."! The act of hitting Send seems to be a great
way of realising one's mistakes.

Of course you need colnr - m for those times when m is set to 26.
Remembered that when I wrote it, forgot it 2 paragraphs later!



From carroll at nospam-tjc.com  Sat May 28 21:23:56 2005
From: carroll at nospam-tjc.com (Terry Carroll)
Date: Sat, 28 May 2005 18:23:56 -0700
Subject: Is there already a Python module to access the USPTO web site?
References: <th0h911kqgkpreepv3sshork93j9op8svd@4ax.com>
	<mailman.222.1117305420.18027.python-list@python.org>
Message-ID: <ic6i9111tp4hllrn2ii7icih74oirj3ovn@4ax.com>

On Sat, 28 May 2005 20:37:40 +0200 (CEST), Tomasz Rola
<rtomek at ceti.pl> wrote:

>I don't know but if you are determined to have it in Python, perhaps ypu
>should check MozPython.

Thanks.  That seems a little more than I need, but it looks
intriguing.


From gdub at ece.utexas.edu  Tue May 24 17:03:25 2005
From: gdub at ece.utexas.edu (Gary Wilson Jr)
Date: Tue, 24 May 2005 16:03:25 -0500
Subject: PAM authentication?
Message-ID: <4293969D.8040600@ece.utexas.edu>

I would like my application to be able to authenticate through PAM. Is
there any code out there that implements this? All I could find was PyPAM
(http://www.pangalactic.org/PyPAM/), which doesn't look like it has been
touched in almost 6 years and requires python1.5.



From roy at panix.com  Tue May 31 12:52:20 2005
From: roy at panix.com (Roy Smith)
Date: 31 May 2005 12:52:20 -0400
Subject: The need to put "self" in every method
References: <1117554344.938440.54700@g14g2000cwa.googlegroups.com>
Message-ID: <d7i4o4$q4r$1@panix2.panix.com>

Fernando M. <fernandomirandamuro at gmail.com> wrote:
>i was just wondering about the need to put "self" as the first
>parameter in every method a class has because, if it's always needed,
>why the obligation to write it? couldn't it be implicit?

Didn't this exact question get asked just a few days ago?

Anyway, the short answer is:

1) Yes, it's always needed.
2) It's part of the Python design philosophy that "explicit is better
than implicit".

Note that in languages like C++ where using "this->" is optional,
people invent their own conventions for keeping local and instance
variables distinct, like prepending m_ to member names (except that
different people do it different ways, so it's more confusing).



From jstroud at mbi.ucla.edu  Sun May 15 22:19:05 2005
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Sun, 15 May 2005 19:19:05 -0700
Subject: thread title's getting shorter...
In-Reply-To: <118ftdvgp0r4o34@corp.supernews.com>
References: <1116096706.696830.275140@g44g2000cwa.googlegroups.com>
	<1116201587.067054.220550@g49g2000cwa.googlegroups.com>
	<118ftdvgp0r4o34@corp.supernews.com>
Message-ID: <200505151919.05514.jstroud@mbi.ucla.edu>

On Sunday 15 May 2005 06:17 pm, "Rolland" <rolland1 wrote:
> "Johnny Gentile" <whocaresrmb at yahoo.com> wrote in message
> news:1116201587.067054.220550 at g49g2000cwa.googlegroups.com...
>
> > .
>
> ?

Another instance of the extremely clever low content body email, AKA the LCBE. 
Let us bask in the cleverness, shall we? Boy that's clever! I can't get over 
how clever that is. Let's all just simultaneously acknowledge that the the 
author of the LCBE has proved his vast intellectual superiority by omitting 
content from the body, leaving others to wonder exactly what he meant. To the 
LCBE author, these people should wonder, as they are not smart enough to know 
that he really meant nothing except to make people wonder. Very Clever! What 
is even more clever is that the author of the LCBE is now making hundreds of 
people make a "Johnny Gentile" filter. Wow, I'm so impressed with this level 
of cleverness. Now, if the LCBE author will go take a crap on some canvas, we 
can call it art. How clever, indeed! Clever, clever, clever, clever, clever. 
Weeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee.
Clever.

(And Stupid.)

Dear LCBE author, please go fuck yourself.

James

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From fredrik at pythonware.com  Tue May 10 10:42:57 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 10 May 2005 16:42:57 +0200
Subject: Advice needed on __del__
References: <d5o1s1$8h3$1@sea.gmane.org> <d5obmp$cqh$1@sea.gmane.org>
	<d5oifh$7n8$1@sea.gmane.org>
Message-ID: <d5qgrh$rnh$1@sea.gmane.org>

Andr? Roberge wrote:

> If I need to have the user call Evil.destroy() as Evil
> is getting out of scope, it would miss the whole point
> of teaching about the natural way scope and namespace
> work.

well, if you insist on using finalizers to keep track of what's in the current
scope, I'd say that you are missing the point about how scopes and name-
spaces work...

(to track the contents of a scope, you have to look at the scope.)

> A thought occurred to me, regarding "when" __del__
> is called.  Can I force Python, through some function call,
> to perform this.  Each time I refresh the screen, I could
> force that call, then check to see if Evil has been
> destroyed by Python, which would give me the information
> I need to destroy Evil_twin behind the scene myself -
> which is what I am really after.

the correct solution is to inspect the current namespace every time you
refresh the screen, and make sure the screen contents matches what's
in the namespace.

</F> 





From lbates at syscononline.com  Thu May 26 14:33:29 2005
From: lbates at syscononline.com (Larry Bates)
Date: Thu, 26 May 2005 13:33:29 -0500
Subject: converting jpg to pdf
In-Reply-To: <1117116021.652260.66260@g14g2000cwa.googlegroups.com>
References: <1117116021.652260.66260@g14g2000cwa.googlegroups.com>
Message-ID: <42961679.2020304@syscononline.com>

You use PIL (Python Imaging Library) if you want simple
conversion or ReportLab if you want to combine several along with
text, etc.

-larry

Raghul wrote:
> Hi friends
>             Is it possible to convert jpg to pdf  in python. I need a
> program to convert jpg format file to pdf. Is there any sample or any
> library to do that? Pls guide me.
> 
> Thanks in advance
> 


From m0sf3t at hotmail.com  Tue May 24 00:58:48 2005
From: m0sf3t at hotmail.com (m0sf3t)
Date: 23 May 2005 21:58:48 -0700
Subject: A Clientform question
Message-ID: <1116910728.487959.22860@z14g2000cwz.googlegroups.com>

Does anyone here use ClientForm to handle a HTML form on client side?
I try to open this page https://www.orange.ch/footer/login
but got this message
  File "C:\Python24\lib\site-packages\ClientForm.py", line 781, in
do_input
    raise ParseError("start of INPUT before start of FORM")
ParseError: start of INPUT before start of FORM
Somebody can give me some advice



From Bill at SynectixLtd.com  Tue May 31 12:26:37 2005
From: Bill at SynectixLtd.com (Bill Davy)
Date: Tue, 31 May 2005 16:26:37 +0000 (UTC)
Subject: DLL load failed: The specified procedure could not be found
Message-ID: <d7i37t$k6n$1@nwrdmz02.dmz.ncs.ea.ibs-infra.bt.com>

sys.path:
 H:\Husky\HostPC\V1\SHIP\Debug
 H:\Husky\HostPC\V1\SHIP
 E:\Bill\Python-2.4.1\PCbuild\python24_d.zip
 C:\Python24\Lib
 C:\Python24\DLLs
 C:\Python24\Lib\lib-tk
 H:\Husky\HostPC\V1\RunSHIP
 H:\Husky\HostPC\V1\Debug
 C:\Python24
 C:\Python24\lib\site-packages

Traceback (most recent call last):
  File "H:\Husky\HostPC\V1\SHIP\test1.py", line 7, in ?
    import SHIP
  File "H:\Husky\HostPC\V1\Debug\SHIP.py", line 5, in ?
    import _SHIP
ImportError: DLL load failed: The specified procedure could not be found.

a) What "specified procedure "
b) SHIP was made by SWIG
c) Is there some way to find out which DLL and which procedure is involved?

It's all debug build, sys.path has all the Debug directories.

tia
    Bill 




From fredrik at pythonware.com  Tue May 24 11:01:35 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 24 May 2005 17:01:35 +0200
Subject: Running in Release or Debug version of the python interpreter?
References: <d6v71s$9ds$1@news.hispeed.ch>
Message-ID: <d6vfha$67o$1@sea.gmane.org>

Raphael Zulliger wrote:

long version: I'm using ctypes to load my own dll. There exists 2
> version of this dll - a debug and a release version (where one is linked
> against debug C runtime dll and the other to release C runtime dll). Now
> I have to change the name of the dll I want to be loaded by ctypes...
> But how can I find out which of the dll I have to load?!

calling GetModuleFileName (in kernel32.dll) on sys.dllhandle should give
you the name of the current Python DLL.  something like this should work:

    from ctypes import *
    MAX_PATH = 500
    filename = c_buffer(MAX_PATH)
    windll.kernel32.GetModuleFileNameA(sys.dllhandle, filename, MAX_PATH)
    filename = filename.value

</F> 





From getvijay at gmail.com  Fri May 20 16:21:33 2005
From: getvijay at gmail.com (Vijay Kumar)
Date: Fri, 20 May 2005 14:21:33 -0600
Subject: From the call hook, how do I know more precisely what is called?
Message-ID: <f4c94baa0505201321791f5834@mail.gmail.com>

Hi,

I wrote a trace function using the profiling and tracing hooks
provided by the python interpreter.

The Python interpreter reports the calls occuring in the source
program to my trace function.

How can I know whether the call happened is a function call or method
call and if it is a method call what is its self object and/or  class
is?.

I receive a frame object from the interpreter for every call. 

Thanks,
Vijay.


From ruach at chpc.utah.edu  Mon May 16 17:00:41 2005
From: ruach at chpc.utah.edu (Matthew Thorley)
Date: Mon, 16 May 2005 15:00:41 -0600
Subject: ElemenTree and namespaces
In-Reply-To: <d6an8t$554$1@vegh.ks.cc.utah.edu>
References: <d6an8t$554$1@vegh.ks.cc.utah.edu>
Message-ID: <d6b1lq$9ls$1@vegh.ks.cc.utah.edu>

Thanks Andrew & Oren, that should do the trick.


From tdelaney at avaya.com  Tue May 10 21:39:25 2005
From: tdelaney at avaya.com (Delaney, Timothy C (Timothy))
Date: Wed, 11 May 2005 11:39:25 +1000
Subject: Need a little parse help
Message-ID: <338366A6D2E2CA4C9DAEAE652E12A1DE02520500@au3010avexu1.global.avaya.com>

Peter Hansen wrote:

> In my opinion, if the code fits on one screen and just reads stuff
> from one file and, maybe, writes to another, you can safely and with
                            ^^^^^^
> clean conscience ignore Mike's advice (but remember it for later!).

Remember, finalisers are not called when Python exits. So if you don't
explicitly close the file you are *writing* to, it may not be flushed
before being closed (by the OS because the process no longer exists).

Tim Delaney


From mynews44 at yahoo.com  Sun May 15 08:51:04 2005
From: mynews44 at yahoo.com (googleboy)
Date: 15 May 2005 05:51:04 -0700
Subject: what is the best way to determine system OS?
In-Reply-To: <86acnlkjxq.fsf@guru.mired.org>
References: <1114436211.942212.203790@f14g2000cwb.googlegroups.com>
	<868y37osc7.fsf@guru.mired.org> <hpivj2-lh1.ln1@lairds.us>
	<86y8b6o8pw.fsf@guru.mired.org>
	<1114487173.272526.13670@o13g2000cwo.googlegroups.com>
	<V2nbe.73933$xJ7.4988028@phobos.telenet-ops.be>
	<86acnln8wi.fsf@guru.mired.org>
	<POpbe.74075$lL3.4833408@phobos.telenet-ops.be>
	<86acnlkjxq.fsf@guru.mired.org>
Message-ID: <1116161464.505437.323640@g14g2000cwa.googlegroups.com>

I did somethign that really seems far brighter...  approaching it from
a slightly different angle I just search through each line for the
right field title,  and then take that field's value from teh last line
of output.

Doesn't matter what OS, doesn't matter what format now.  It can cope
with it all.

:-)

Thanks for the advice!  I learned a bunch.



From s_david_rose at hotmail.com  Tue May 31 10:05:44 2005
From: s_david_rose at hotmail.com (GMane Python)
Date: Tue, 31 May 2005 10:05:44 -0400
Subject: Seti-like program
Message-ID: <d7hqrb$c3q$1@sea.gmane.org>

Hello

I'd like to consider making a program which is 'seti-like' where I could run
a command-line Python script to just 'do something', and then be able to
launch a viewer program (maybe linux x11 or Windows, possibly over a network
socket) using wxPython to be able to inter-act with it. (Start jobs, view
queue of jobs, modify jobs, etc, or even just watch the work process).

I was wondering if anyone out there had any experience with this, maybe had
an example to share.

I consider seti at home a good example, also maybe Arcserve backup program with
manager.

-Dave





From db3l at fitlinxx.com  Thu May  5 19:09:20 2005
From: db3l at fitlinxx.com (David Bolen)
Date: 05 May 2005 19:09:20 -0400
Subject: py2exe and library.zip
References: <mailman.76.1115095357.6583.python-list@python.org>
	<5uadnUTTqv6Iw-rfRVn-qw@powergate.ca>
	<mailman.129.1115156250.6583.python-list@python.org>
	<maednQTrx_iJLOXfRVn-hA@powergate.ca> <uzmv92v5z.fsf@fitlinxx.com>
	<mailman.76.1115331416.29826.python-list@python.org>
Message-ID: <ur7gl2rtr.fsf@fitlinxx.com>

Timothy Smith <timothy at open-networks.net> writes:

> I've got this working now, and fyi it downloads the entire zip every
> time. and svn appears to be very slow at it to.

Hmm, not what I would have expected, and certainly unfortunate for
your desired use case.

I just tried some experiments with rsync (easier to test locally than
Subversion), and found that taking an existing zip, unpacking it and
then repacking it with some rearrangement was in fact sending
everything, even though the source files were unchanged.  Since py2exe
is effectively rebuilding that library.zip on each run, that probably
is a fair representation of the generation process.

I'm not familiar enough with zip file compression, but perhaps it
includes the use of something that is file specific to seed the
compression engine, which would mean that making a new zip file even
with the same files in it might not yield precisely the same internal
compressed storage.  Both versions would be proper and decompressible,
just not binary identical even for unchanged sources.

If I disabled compression for the zip files (just did a store only),
and rebuilt the zip even with a rearranged file order, rsync was
able to detect just the changes.

So you might want to try ensuring that your py2exe generated file is
not compressing the individual modules (a verbose zip listing of the
library.zip should just show that they were "Stored").  Your
library.zip will get larger, but it should become more efficient to
transfer - hopefully as well with Subversion as I was seeing with
rsync.

(In fact, I remember doing just something like this with a project of mine
that I was using py2exe with, and then using rsync to push out the resultant
files to remote sites - I had originally compressed the library.zip but
rsync was pushing the whole thing out, so I stopped using the compression)

-- David


From fiedzia at fiedzia.prv.pl  Tue May  3 14:54:07 2005
From: fiedzia at fiedzia.prv.pl (Maciej Dziardziel)
Date: Tue, 03 May 2005 20:54:07 +0200
Subject: distributing scripts
References: <mailman.111.1115136654.6583.python-list@python.org>
Message-ID: <20050503185407.1E65.0.NOFFLE@fiedzia.homeip.net>

Anand S Bisen wrote:

> Hello,
> 
> What is a good way to distributing python scripts as a package. Since
> lately i am facing lots of issues with my python scripts not being able
> to run properly due to either (old python 2.2 at the client machine) or
> missing module. Is there a way by which i can solve these issues
> revolving around my scripts ???

You can use cxFreeze (http://starship.python.net/crew/atuining/cx_Freeze/)
to freeze python interpreter and all required modules.

-- 
Maciej "Fiedzia" Dziardziel (fiedzia (at) fiedzia (dot) prv (dot) pl)
www.fiedzia.prv.pl

Patience comes to those who wait.


From lee_cullens at mac.com  Wed May  4 08:41:09 2005
From: lee_cullens at mac.com (Lee Cullens)
Date: Wed, 4 May 2005 08:41:09 -0400
Subject: Regular Expression tools?
In-Reply-To: <mailman.1225.1115207103.6582.python-list@python.org>
References: <mailman.1225.1115207103.6582.python-list@python.org>
Message-ID: <ffa74ca5b9ab6ba4370409d550d45548@mac.com>



> From: "Terje Johan Abrahamsen" <terjeja at gmail.com>
> Date: May 4, 2005 6:49:14 AM EDT
> To: python-list at python.org
> Subject: Re: Regular Expression tools?
>
>
> This is what you are looking for.
> http://kodos.sourceforge.net/
>
>

I've seen that and it looks great, but I don't have the Trolltech Qt 
application framework.
" Kodos utilizes the PyQt library for it's interface and will run on 
any platform that Trolltech's Qt application framework is available on 
(Linux, Unix, Windows, Mac)."


>
> From: Kent Johnson <kent37 at tds.net>
> Date: May 4, 2005 7:43:43 AM EDT
> To: python-list at python.org
> Subject: Re: Regular Expression tools?
>
>
> Lee Cullens wrote:
>> Been here before, but can't remember what I used and anyway that was 
>> a PC platform.
>> So, if you use a Regular Expression tool (PCRE standard) for Python 
>> programming and your development platform is Mac OS X, would you 
>> please help narrow down the search for me.  All I seem to be finding 
>> are other platforms and/or not standalone.
>
> Maybe you are looking for RegexPlor:
> http://python.net/~gherman/RegexPlor.html
>
> Kent

Yes, I found that - not quite as full as I was thinking of, but it gets 
the job done for now.


Thanks all,
Lee C
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From nyamatongwe+gravity at gmail.com  Sun May  1 21:14:14 2005
From: nyamatongwe+gravity at gmail.com (Neil Hodgson)
Date: Mon, 02 May 2005 01:14:14 GMT
Subject: gtk/qt scintilla help !
References: <4274cdc0$0$26837$626a14ce@news.free.fr>
Message-ID: <MPG.1ce02888e179a84d98968f@news-server>

Fabien:

> There is a lexPOV.cxx file in the package, but I can not find any POV 
> keywords in any file ( there are about 150 POV keywords). Did i miss it, 
> and if not, how do I create one and include it for the library building ?

   The Scintilla web site, documentation and mailing list are:
http://www.scintilla.org/
http://scintilla.sourceforge.net/ScintillaDoc.html
http://mailman.lyra.org/mailman/listinfo/scintilla-interest

   Keyword lists are often very large as it is frequently desired to 
highlight all the identifiers in an API. The Win32 API is around 10 
megabytes in SciTE .api format. 

   The SciTE editor is shipped with some keyword lists, including some 
for POV in the pov.properties file.

   To set keywords, call SCI_SETKEYWORDS as described on the 
documentation page.

   I do not personally use the Qt or PygtkScintilla wrappers for 
Scintilla.

   Neil


From steven.bethard at gmail.com  Tue May 31 16:51:24 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Tue, 31 May 2005 14:51:24 -0600
Subject: convert a string to tuple
In-Reply-To: <1117572374.910751.5400@f14g2000cwb.googlegroups.com>
References: <1117570449.887422.225670@g43g2000cwa.googlegroups.com>
	<1117572374.910751.5400@f14g2000cwb.googlegroups.com>
Message-ID: <VsWdnQNf4J_RUwHfRVn-2g@comcast.com>

bcannon at gmail.com wrote:
> Pass it to eval:
> 
>>>>eval('(1, 2, 3, 4, 5)')
> (1, 2, 3, 4, 5)

Just be sure you know where your strings come from.  You wouldn't want 
someone to pass you
     """__import__('os').system('rm -rf /')"""
and then send that to eval. =)

STeVe


From tzot at sil-tec.gr  Fri May  6 05:52:15 2005
From: tzot at sil-tec.gr (Christos TZOTZIOY Georgiou)
Date: Fri, 06 May 2005 12:52:15 +0300
Subject: Python Challenge ahead [NEW] for riddle lovers
References: <d4u60o$akh$1@news2.netvision.net.il>
Message-ID: <o9fm71108nv47kssm9o5a8fjkr09ksu9jj@4ax.com>

On Fri, 29 Apr 2005 23:38:53 +0300, rumours say that pythonchallenge
<pythonch at nospam.not.com> might have written:

>For the riddles' lovers among you, you are most invited to take part
>in the Python Challenge, the first python programming riddle on the net.

>You are invited to take part in it at:
>http://www.pythonchallenge.com

This is not only about riddle lovers, but a great way to advocate python
to other programmers...  I already had a session with a friend (he did
the thinking, I did the programming next to him) and he was enchanted :)

I'm already investing a little time to think some new riddles to suggest
(extending stdlib coverage).
-- 
TZOTZIOY, I speak England very best.
"Be strict when sending and tolerant when receiving." (from RFC1958)
I really should keep that in mind when talking with people, actually...


From andrea_gavana at tin.it  Sun May  1 16:16:47 2005
From: andrea_gavana at tin.it (andrea_gavana at tin.it)
Date: Sun, 1 May 2005 22:16:47 +0200
Subject: Webbrowser On Windows
Message-ID: <4200063400030C5D@ims9c.cp.tin.it>

>It seems to me that there is no way to create a new instance of Internet
>Explorer (if there are already some IE windows opened).
>Does anyone know a possible solution? Or a workaround (without using
>startfile, maybe?) that will force IE to create a new instance?

Should I suppose no solution exists?

Thanks for every suggestions.

Andrea



From tim.golden at viacom-outdoor.co.uk  Wed May 18 03:59:05 2005
From: tim.golden at viacom-outdoor.co.uk (Tim Golden)
Date: Wed, 18 May 2005 08:59:05 +0100
Subject: Problem listing services with wmi
Message-ID: <9A28C052FF32734DACB0A288A3533991EBB822@vogbs009.gb.vo.local>

[... snip my comparison of win32service & WMI ...]

| Seems like your hunch was right, the first loop completes correctly. 
| Adding a counter to both loops shows that getting services from 
| win32service.EnumServicesStatus() gets 108 services, and getting them 
| through WMI gets to 87 and then halts with the previously 
| mentioned error :
| 
| Traceback (most recent call last):
|   File "<stdin>", line 1, in ?
|   File 
| "G:\Python-2.4\Lib\site-packages\win32com\client\util.py", line 
| 83, in next
|     return _get_good_object_(self._iter_.next())
| pywintypes.com_error: (-2147217398, 'OLE error 0x8004100a', 
| None, None)
|  From examining your code I imagine you tried to catch the exception, 
| but it didn't work because the exception is thrown on the 
| "for" line and 
| not when getting the service's Caption property... 

Slightly altered version of the code below. This one
doesn't use pywin32's iterator interface, although it
does use the __getitem__ interface, so it may still
cause probs.

| Python 2.4 on Windows XP SP2 here.

OK. I'm running 2.3 normally but I've run the scripts with
2.4 so I don't think it makes a difference. I'll leave the
set import logic in place so I don't have to remember.

| Do you think we're getting anywhere with this? If not, then I'll just 
| use the "win32" method of getting the service list, even 
| though it isn't 
| as pretty. I don't want to waste your time on something that may have 
| more to do with my machine than anything else... But if you 
| want to try 
| and get to the bottom of this, I have no problem with trying 
| out other 
| suggestions.

It's obvious from the VBS error that it's WMI at fault rather than
Python as such. All I'm trying to do here is to deal gracefully with
the errors rather than falling over in a heap. It would be interesting
to know what it is about one or more services which gives WMI a
problem, but without logging a bug with Microsoft (if one can even
do that) I doubt much will change in that area in a hurry.

I'm quite happy to go another round or two if it helps. I
think that all we're likely to achieve is, as I say, a more
robust solution; we're unlikely to get the missing service
if the core WMI can't see it for some reason. In that sense,
it looks like you're better off using the win32service code.

Updated code below.
TJG

<code>

try:
  set
except NameError:
  from sets import Set as set

##
## Taken from a post to c.l.py by William J. Rice
##
import win32service
import win32con

accessSCM = win32con.GENERIC_READ
hscm = win32service.OpenSCManager (None, None, accessSCM)

win32_names = set ()

for service_info in win32service.EnumServicesStatus(hscm):
  win32_names.add (service_info[1])

import win32com.client

c = win32com.client.GetObject (
  "winmgmts:{impersonationLevel=Impersonate,authenticationLevel=Default}/root/cimv2"
)

wmi_names = set ()
services = c.ExecQuery ("SELECT * FROM Win32_Service")
n_services = services.Count
for n_service in range (n_services):
  try:
    service = services[n_service]
  except:
    print "Could not get service", n_service
  else:
    short_name = service.Properties_ ("Caption").Value
    wmi_names.add (short_name)
  
print "In win32:"
print ", ".join (win32_names)
print

print "In wmi:"
print ", ".join (wmi_names)
print

print "only in win32:", ", ".join (win32_names - wmi_names)
print

print "only in wmi:", ", ".join (wmi_names - win32_names)
print

</code>

________________________________________________________________________
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From thomas.weholt at gmail.com  Thu May 12 10:39:08 2005
From: thomas.weholt at gmail.com (Thomas W)
Date: 12 May 2005 07:39:08 -0700
Subject: Speed of the different python-based HTTP-servers
Message-ID: <1115908748.074269.9470@g43g2000cwa.googlegroups.com>

I'm thinking of switching from my Twisted-HTTP-server-project to
CherryPy or Snakelets etc etc. The project involves alot of
database-access using SQLObject and SQLite ( perhaps MySQL and
PostgreSQL in the future ) and some heavy IO-stuff ( scanning of local
filesystem to extract meta information about images and storing this
info in the database. This won't happen too often though).

I don't expect this project to have alot of traffic once online, but it
would kinda suck if my software couldn't handle it if it really took
off.

So my question is; based on the very brief description above, are there
any of the python-based frameworks that fits my project better than the
others? And are there some of the frameworks that doesn't scale
particulary well? Benchmarks anyone?

My main focus is simplicity, one of the main reason I'm looking for
something else than Twisted. I'm a little conserned about the
threading-issues when using thread-based frameworks though, but if
speed and scalability would increase dramatically I'm inclined to
struggle with the threads anyhow.

Snakelets and CherryPy both look interesting compared to Twisted ( and
CherryPy seems to have some code available using SQLObject allready,
while Snakelets does not, so I'm leaning towards CherryPy at the moment
).

I want to use ZPT or simpleTAL for templating and SQLObject for
database-access etc if that makes any differences.

Thanks for any input you might have.

Best regards,
Thomas



From news at outbacklinux.com  Thu May 12 08:17:39 2005
From: news at outbacklinux.com (Adrian Casey)
Date: Thu, 12 May 2005 21:47:39 +0930
Subject: pexpect: TIMEOUT exception never raised
Message-ID: <42834963@duster.adelaide.on.net>

I have a python script which uses pexpect and I want to timeout (i.e. raise
pexpect.TIMEOUT) if a long running command does not produce the output I am
expecting.  To simulate the 'long running command', consider the following
example which simply runs the 'yes' command which prints an endless series
of 'y' characters to the terminal.  I want to timeout after 10 seconds -:

child=pexpect.spawn('ssh me at remote_host')
child.sendline('yes')
child.expect([pexpect.TIMEOUT, "the pattern I'm expecting"],10)

In this situation, pexpect.TIMEOUT will never be raised.  The TIMEOUT
exception is only raised if *no* output is received or the output has
completed and the pattern expected is not matched within the timeout
period.  But what about situations where a command produces an infinite
amount of output?  In the above example, the child.expect statement will
hang forever.

I thought about using signal.signal to set an alarm that fires a few seconds
after timeout and explicitly closes the session.  However, my application
is multi-threaded (i.e. each thread respresents a connection to a remote
host) and signals can not be used outside the main thread :-(

Any ideas?

Cheers.
Adrian Casey.


From sjmachin at lexicon.net  Wed May 18 22:57:45 2005
From: sjmachin at lexicon.net (John Machin)
Date: Thu, 19 May 2005 12:57:45 +1000
Subject: Extracting multiple zip files in a directory
References: <1116462658.723097.134390@g43g2000cwa.googlegroups.com>
	<5vtn81h8qt9mk73etq0r3e02uqsdjf5jo1@4ax.com>
	<1116470952.173588.200990@o13g2000cwo.googlegroups.com>
Message-ID: <tvvn8155hra53hjd1khc5i4skhh7p9tkvm@4ax.com>

On 18 May 2005 19:49:12 -0700, "Lorn" <efoda5446 at yahoo.com> wrote:


>
>Was wondering what your reasoning is behind replacing "filter" with the
>x for x statement?

map, filter, and reduce tend to be deprecated in some quarters since
list comprehensions came in [and fiercely defended in other quarters].
I'm just evangelising  :-)



From pink at odahoda.de  Mon May 30 07:17:10 2005
From: pink at odahoda.de (Benjamin Niemann)
Date: Mon, 30 May 2005 13:17:10 +0200
Subject: write html-headers (utf-8)
References: <pan.2005.05.30.07.11.54.252974@localhost.localdomain>
Message-ID: <d7eslr$r07$1@online.de>

db wrote:

> Hello all,
> 
> I hope this is the correct newsgroup for this question.
> 
> Does anybody know how I can write a html-header with python(cgi)?
> The problem is, I have a few html templates in which I have a header e.g:
> 
> <!DOCTYPE  HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
> "http://www.w3.org/TR/html4/strict.dtd"> <html>
> <head>
> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
> 
> In this template I write a few Mysql variables.
> Those variable often have german characters. This characters (G??sing in
> stead of G?sing). The german characters in the html template are shown
> correctly.
> 
> If I change the character encoding with the browser to utf-8, all the
> characters are shown correctly. As you can see, I put in the header of the
> html template that the encoding is UTF-8, the browser still shows windows
> ISO-8859-15. Can I write the header with python so the browser uses the
> utf-8 encoding?
> 
> My hosting providor uses fedora core 2, Python 2.2.3, MySQLdb. Mysql
> 3.23.58
> 
> I googled for hours, but I can't find the answer. I hope ypu can help me.
Does your browser send a Content-Type HTTP header (don't confuse this with
the HTML <head> part)? If it does and it specifies a charset, this will
override your <meta http-equiv>. Often iso-8859-1 is the default charset
for the Content-Type header.

-- 
Benjamin Niemann
Email: pink at odahoda dot de
WWW: http://www.odahoda.de/


From mikkel at revelation.dk  Sun May  8 14:09:29 2005
From: mikkel at revelation.dk (Mikkel =?UTF-8?B?SMO4Z2g=?=)
Date: Sun, 08 May 2005 20:09:29 +0200
Subject: Database backend?
Message-ID: <427e55e3$0$79463$14726298@news.sunsite.dk>

I am in the progress of laying the groundwork for a small application I
intend to make, and I'd like some expert advice, since this is the first
larger project I've gotten myself into.

First problem is which backend to use for data storage. The application I am
trying to create is a small presentation-program with the sole purpose of
displaying lyrics for songs at smaller concerts.
The system is required to have a database of some kind for storing the
lyrics, and this should most definitely be searchable.
Naturally, I need a backend for this of some sort. I've been thinking of
either XML, or full-blown MySQL.
XML is very versatile, but I wonder if it is fast enough to handle lyrics
for, say, 1000 songs - and then I would need to come up with some kind of
indexing-algorithm. MySQL on the other hand, requires a lot of effort and
adds to the complication of the installation.

Honestly, I have a hard time making my mind up. Also, there might be other
possibilities.

Feedback will be appreciated.


From gerard.blais at gmail.com  Tue May  3 08:07:00 2005
From: gerard.blais at gmail.com (Gerard C Blais)
Date: Tue, 03 May 2005 08:07:00 -0400
Subject: urllib2 and timeout question
References: <l1uc7197m6pp0o6bhjvml3pa8308pgv2m9@4ax.com>
	<mailman.71.1115089131.6583.python-list@python.org>
Message-ID: <29qe71l1j8p03c1hegh40h334tkfmf4uv7@4ax.com>


Thanks for the suggestion:

My program now starts like this:


import time
import socket
socket.setdefaulttimeout(300)
import urllib2
import httplib


import urlparse, gzip
from StringIO import StringIO


and it hasn't helped.

On Mon, 2 May 2005 21:58:46 -0500, Skip Montanaro <skip at pobox.com>
wrote:

>    Gerard> Code below:
>
>Order might be important (though hopefully not).  Can you give this a try?
>
>    import time
>    import socket
>    socket.setdefaulttimeout(300)
>    import urllib2
>
>    ...
>
>Skip



From tiissa at nonfree.fr  Sat May 28 15:41:27 2005
From: tiissa at nonfree.fr (tiissa)
Date: Sat, 28 May 2005 21:41:27 +0200
Subject: Parsing a Python dictionary inside a Python extension
In-Reply-To: <mailman.203.1117229197.18027.python-list@python.org>
References: <mailman.203.1117229197.18027.python-list@python.org>
Message-ID: <4298c964$0$6799$636a15ce@news.free.fr>

quadric at primenet.com wrote:
> I tried something like this and it has not worked.

Oh! What did you ask of it, what did you expect and what did you get?


>     if ( (item = PyDict_GetItemString( vdict , "atab1")) != NULL )   
> PyArg_ParseTuple( item , "i" , &atab1   );

This code expects a dictionary in which keys 'atab1' and 'atab2' are 
singletons of integer. If that's what you want, I'd say it should work.


>     //  ndict = Py_BuildValue( ........create dictionary here ..........)
> 
>     return ndict ;
> }

I personnally prefer 'return Py_BuildValue("");' than returning NULL 
pointers (but I don't like to check the doc just to make sure NULL can 
be interpreted as None).

In order to build a dictionary you could try:

...
     return Py_BuildValue("{s:i,s:i}", "key1", atab1, "key2", atab2);
}

Or even "{s:(i),s:(i)}" to have singletons for values.


HTH


From brad at us.ibm.com  Sun May 15 22:54:39 2005
From: brad at us.ibm.com (Bradley K Pahlke)
Date: Sun, 15 May 2005 22:54:39 -0400
Subject: Brad Pahlke is out of the office.
Message-ID: <OF42816B4A.AAB5D702-ON85257003.000FFD67-85257003.000FFD67@us.ibm.com>

I will be out of the office starting  05/11/2005 and will not return until
05/17/2005.

I will respond to your message when I return.



From bogus@does.not.exist.com  Tue May 31 15:15:02 2005
From: bogus@does.not.exist.com ()
Date: Tue, 31 May 2005 19:15:02 -0000
Subject: No subject
Message-ID: <mailman.25.1572215739.3356.python-list@python.org>

#! rnews 1598
Newsgroups: comp.lang.python
Path: news.xs4all.nl!newsspool.news.xs4all.nl!transit.news.xs4all.nl!newsfeeder.wxs.nl!textfeed1.on.meganewsservers.com!meganewsservers.com!feeder2.on.meganewsservers.com!216.196.98.140.MISMATCH!border1.nntp.dca.giganews.com!nntp.giganews.com!diablo.voicenet.com!nntp.abs.net!attws2!ip.att.net!NetNews1!xyzzy!nntp
From: Harry George <harry.g.george at boeing.com>
Subject: Re: something like CPAN, PPMs?
X-Nntp-Posting-Host: cola2.ca.boeing.com
Content-Type: text/plain; charset=us-ascii
Message-ID: <xqx3bs3gr3b.fsf at cola2.ca.boeing.com>
User-Agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.4
Lines: 38
Sender: hgg9140 at cola2.ca.boeing.com
Organization: The Boeing Company
References: <mailman.293.1117551472.18027.python-list at python.org>
Mime-Version: 1.0
Date: Tue, 31 May 2005 18:58:32 GMT
Xref: news.xs4all.nl comp.lang.python:379601

Alex Gittens <swiftset at gmail.com> writes:

> I'm new to Python from Perl, and loving it. Has there ever been any
> discussion of creating a similar resource as CPAN for Python, or a
> similar distribution method as PPMs? Seems like it would make a great
> language even better.
> 
> Alex
> -- 
> http://tangentspace.net/cz

CPAN:
1. A lot of the CPAN subject matter is in the base python installation.

2. Much of the remainder is associated with projects which are doing
   something else and happen to provide python bindings.

3. That leaves python-specific libraries as
   candidates for a CPAN.  See:
http://www.python.org/pypi
(see also http://www.python.org/sigs/catalog-sig/)
http://www.vex.net/parnassus/  (the original classic)

PPM:
The typical python install is:
   a) unzip and untar
   b) run "python setup.py install"

So what you are looking for is setup.py, and its module, distutils
http://docs.python.org/lib/module-distutils.html


   

-- 
harry.g.george at boeing.com
6-6M21 BCA CompArch Design Engineering
Phone: (425) 294-4718


From jstroud at mbi.ucla.edu  Mon May  9 19:24:39 2005
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Mon, 9 May 2005 16:24:39 -0700
Subject: Unique Elements in a List
Message-ID: <200505091624.39598.jstroud@mbi.ucla.edu>


On Monday 09 May 2005 03:15 pm, superprad at gmail.com wrote:
> Is there an easy way to grab the Unique elements from a list?

from sets import Set

data = [0.1,0.5,0.6,0.4,0.1,0.5,0.6,0.9]

[x for x in Set(data) if data.count(x) == 1]

--
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From peter at engcorp.com  Mon May  2 21:30:55 2005
From: peter at engcorp.com (Peter Hansen)
Date: Mon, 02 May 2005 21:30:55 -0400
Subject: So many things that need to be decided....
In-Reply-To: <G3Ade.1022$fF6.12717@news1.mts.net>
References: <G3Ade.1022$fF6.12717@news1.mts.net>
Message-ID: <yNKdnT9CXb6mSevfRVn-vQ@powergate.ca>

Heather Stovold wrote:
> Wow - deciding to program in python sure requires a lot of decisions!
> 
> So far:
> 
> I've decided on python for the programming language.
> I've decided on wxpython for the GUI....
> I've decided on DrPython for the Editor....
> 
> I still need to decide on a database........   I've really only used Access,
> and my SQL skills aren't that great.  It would also need to be free....

> Any suggestions??

Yes, provide background on your actual requirements so we aren't just 
pulling suggestions out of our asps (this being a Python-related but
family-oriented newsgroup, that seemed more appropriate than the 
alternative).  What kind of app are you building, what kind of structure 
will your database and app have, performance requirements, etc...

(You might have already mentioned something in your other posting, but I 
didn't read/don't recall it and I'm sure many other potential 
respondents are in the same boat.)

Also, a suggestion from the world of "agile development": stop making so 
many decisions and start writing some actual code!  :-) That way you'll 
gain confidence in the choices you have made, and will rapidly find 
where you went wrong (as you'll inevitably decide you have about some 
things), rather than waiting till you've chosen all the perfect 
components and run out of time to get anything done.  (This advice from 
the voice of experience, me having been where you are 20 years ago, and 
15, and ten years ago, and five years ago...)

-Peter


From edvard+news at majakari.net  Tue May 10 03:53:35 2005
From: edvard+news at majakari.net (Edvard Majakari)
Date: Tue, 10 May 2005 10:53:35 +0300
Subject: Unique Elements in a List
References: <1115676903.432187.294910@z14g2000cwz.googlegroups.com>
	<mailman.241.1115681580.29826.python-list@python.org>
Message-ID: <87psvzikjk.fsf@titan.staselog.com>

James Stroud <jstroud at mbi.ucla.edu> writes:

> from sets import Set
>
> data = [0.1,0.5,0.6,0.4,0.1,0.5,0.6,0.9]
>
> [x for x in Set(data) if data.count(x) == 1]

Um.

...I must have missed something, but I'll post nevertheless:

wouldn't just

[x for x in data if data.count(x) == 1]

suffice? it is also "stable"  preserving order of items. Lemme demo:

>>> [x for x in Set(data) if data.count(x) == 1]
[0.90000000000000002, 0.40000000000000002]

>>> [x for x in data if data.count(x) == 1]
[0.40000000000000002, 0.90000000000000002]

Though I'll admit I also thought of Sets first, because I didn't remember
there was such a nice method list.count().

-- 
# Edvard Majakari		Software Engineer
# PGP PUBLIC KEY available    	Soli Deo Gloria!
One day, when he was naughty, Mr Bunnsy looked over the hedge into Farmer
Fred's field and it was full of fresh green lettuces. Mr Bunnsy, however, was 
not full of lettuces. This did not seem fair.  --Mr Bunnsy has an adventure 


From jstroud at mbi.ucla.edu  Sat May  7 19:56:18 2005
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Sat, 7 May 2005 16:56:18 -0700
Subject: New Python regex Doc (was: Python documentation moronicities)
In-Reply-To: <1115508491.462229.294020@o13g2000cwo.googlegroups.com>
References: <1113301533.054410.203710@z14g2000cwz.googlegroups.com>
	<1115444726.627426.172260@g14g2000cwa.googlegroups.com>
	<1115508491.462229.294020@o13g2000cwo.googlegroups.com>
Message-ID: <200505071656.18622.jstroud@mbi.ucla.edu>

On Saturday 07 May 2005 04:28 pm, Xah Lee wrote:
> Note: ?In other words, the "|" operator is never greedy.?
>
> Note the need to inject the high-brow jargon ?greedy? here as a
> latch on sentence.

The first definition of "jargon" in the Collaborative International Dictionary 
of English is:

"To utter jargon; to emit confused or unintelligible sounds; to talk 
unintelligibly, or in a harsh and noisy manner."

Despite your misuse of the word "jargon", jargon seems to be an area in which 
you are carving yourself a niche.

The term "greedy" has a particular meaning in regex, as does the word 
"algorithm" in computer science. Take a look at Mastering Regular Expressions 
for an exhaustive discussion of the meaning of "greedy" as it applies to 
regular expressions. Of course I anticipate that you will confusedly and 
unintelligibly bash this book, even though it is quite obvious that you have 
yet to read or understand it.


-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From aahz at pythoncraft.com  Mon May  9 21:14:43 2005
From: aahz at pythoncraft.com (Aahz)
Date: 9 May 2005 18:14:43 -0700
Subject: Unique Elements in a List
References: <1115676903.432187.294910@z14g2000cwz.googlegroups.com>
	<1115678197.064079.28220@o13g2000cwo.googlegroups.com>
	<1115679662.521731.297510@f14g2000cwb.googlegroups.com>
Message-ID: <d5p1u3$f53$1@panix3.panix.com>

In article <1115679662.521731.297510 at f14g2000cwb.googlegroups.com>,
runes <rune.strand at gmail.com> wrote:
>
>This is not the most beautiful idiom, but it works...
>
>d = {}
>for k in data:
>    try:
>        d[k] += 1
>    except:
>        d[k] = 1
>
>for k,v in d.items():
>    if v == 1:
>        print k

Only if "works" does not include "order preserving".
-- 
Aahz (aahz at pythoncraft.com)           <*>         http://www.pythoncraft.com/

"And if that makes me an elitist...I couldn't be happier."  --JMS


From newsgroups at jhrothjr.com  Mon May 30 10:59:40 2005
From: newsgroups at jhrothjr.com (John Roth)
Date: Mon, 30 May 2005 08:59:40 -0600
Subject: Is pyunit still usable?
References: <mailman.249.1117463469.18027.python-list@python.org>
Message-ID: <119maj142lusre3@news.supernews.com>

PyUnit came with a GUI, which is not part of the
unittest version in the standard library.

I don't know whether the GUI from PyUnit still
works with the version of unittest in the standard
library, but other than that, there is no reason to
maintain the PyUnit branch.

John Roth



"could ildg" <could.net at gmail.com> wrote in message 
news:mailman.249.1117463469.18027.python-list at python.org...
I want to know something about unittest these days,
and since I'm learning python, I want to touch it through
python. But when I found the newest pyunit is even so
old, I wonder if it is still usable for current python version
2.4. Will you please tell me? Thank you.

What are the advantages and disadvantages of unittest?
Can somebody give me a detailed listing?




From steven.bethard at gmail.com  Tue May 31 12:24:12 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Tue, 31 May 2005 10:24:12 -0600
Subject: The need to put "self" in every method
In-Reply-To: <1117554344.938440.54700@g14g2000cwa.googlegroups.com>
References: <1117554344.938440.54700@g14g2000cwa.googlegroups.com>
Message-ID: <YZadnarn1ekxEgHfRVn-qQ@comcast.com>

Fernando M. wrote:
> i was just wondering about the need to put "self" as the first
> parameter in every method a class has because, if it's always needed,
> why the obligation to write it? couldn't it be implicit?

py> import this
The Zen of Python, by Tim Peters

Beautiful is better than ugly.
Explicit is better than implicit.
...


STeVe


From prabapython at yahoo.co.in  Thu May 12 00:51:48 2005
From: prabapython at yahoo.co.in (praba kar)
Date: Thu, 12 May 2005 05:51:48 +0100 (BST)
Subject: reg mail sending without smtp module
In-Reply-To: 6667
Message-ID: <20050512045148.58811.qmail@web8410.mail.in.yahoo.com>

--- Tim Williams <listserver at tdw.net> wrote:
> ----- Original Message ----- 
> From: "John Abel" <jabel at plus.net>
> 
> 
> > praba kar wrote:
> >
> > >Dear All,
> > >
> > >         Is it possible to send a message as a
> mail
> > >with out smtplib module?  If you find out any
> module
> > >for mail sending(without smtplib) kindly mail me.
> > >
> > >regards
> > >Prabahar
> > >
> >
> > socket
> >
> 
> Telnetlib,   though you will effectively have to
> write your own SMTP client
> (ie your own version of smtplib).
> 
> Why don't you want to use smtplib ?
> 
In Php we can build a Mail Message by
Mail_mime class and send this message by
Mail::Factory's class send Method. Here Php
doesn't use any smtp modules. Like that
In Python I used email.Message class to
build Mail Message and Now I am searching
modules to send this message as mail.

regards 
Prabahar



________________________________________________________________________
Yahoo! India Matrimony: Find your life partner online
Go to: http://yahoo.shaadi.com/india-matrimony


From timothy at open-networks.net  Tue May 17 04:35:36 2005
From: timothy at open-networks.net (Timothy Smith)
Date: Tue, 17 May 2005 18:35:36 +1000
Subject: Windows distribution suggestions?
In-Reply-To: <7xekc6p9tp.fsf@ruckus.brouhaha.com>
References: <7x3bsmfjdg.fsf_-_@ruckus.brouhaha.com>	<d6c6e6$mlf$1@news01.versatel.de>
	<7xekc6p9tp.fsf@ruckus.brouhaha.com>
Message-ID: <4289ACD8.2070207@open-networks.net>

Paul Rubin wrote:

>Bernhard Holzmayer <Holzmayer.Bernhard at deadspam.com> writes:
>  
>
>>I can feel your unhappiness, and I share it. Hi Paul!
>>Here are some hints...
>>    
>>
>
>Thanks!  ;-)
>
>  
>
>>Since your installer needs to run before Python is installed, you need
>>something else. Go to http://www.wisesolutions.com
>>You'll find a Windows installer program, with a demo-version (30days
>>license). Try this, it would be my best recommendation.
>>    
>>
>
>Hmm, ok, it looks like the paid version is around 500 USD.  Since this
>is a Windows thing I'm ok in principle with using a payware packaging
>app, but that's a bit on the expensive side.  I'll see what the
>customer says but I think they might resist.
>
>  
>
>>You'll have to test your application on Windows, in any case. 
>>I've built lots of applications which run in both worlds (Linux/Windows).
>>Usually this works, but occasionally you'll have to deal with strange
>>things. One is, if you use ODBC. There's good chance that you'll have to
>>deal with access restrictions in the %SYSTEM% directory, unless you require
>>an administrator's account for your application.
>>    
>>
>
>The app works ok under Windows now.  I don't use ODBC.  I might need
>some database connectivity later and will probably use MySQL.  I don't
>want to need an admin account.  Right now the app just has a Tkinter
>gui, reads and writes a few files and talks to some sockets.  I might
>need to add some C extensions later but those should be pretty portable.
>
>  
>
>>If you test your app on a Windows machine, you can easily install
>>Python 2.3 and Python 2.4 on the same machine without
>>conflicts. Just try out, if your app works with either. If it works
>>with both, why not use 2.3?
>>    
>>
>
>I guess I could do that.  I believe I make some minor use of 2.4 features
>but I can probably retrofit those things.
>
>  
>
>>>There's also py2exe--is that as good? 
>>>      
>>>
>>Depends on your application, if that is acceptable. 
>>I have no experiences with that.
>>    
>>
>
>Me neither.  I was hoping to find out its good and bad points as compared
>with alternatives.
>
>  
>
>>Who are your customer's (the recipients of your program releases)?
>>Usually, you cannot rely that they have online access to your repository.
>>Then, they are potentionally interested in security issues and/or stability
>>of the program. I'd not like a program which is said to require frequent
>>updates - I'd guess that there's not much quality inside...
>>    
>>
>
>The program is under active development and sprouting new features 
>every few minutes.  The idea is to release a new development build once
>a week or so, for internal use by the customer.
>
>  
>
>>If your application has a GUI, a menu entry might fetch your update files
>>and place them wherever they must reside. your update.py might feed that
>>menu entry. Quite easy. 
>>    
>>
>
>Hmm, that's another thing I'd have to code--maybe it's feasible.  I'll
>think about it.
>
>  
>
>>If you have command line apps, why not provide an additional update.py 
>>and then, if you provide updates, just install them using your installed
>>update.py. The only thing: How do you keep track of path/desktop/file
>>information and how do you deal with user rights etc.?
>>Are you aware of how this is done under WindowsXP? It's quite different from
>>older Windows platforms! Therefore it might be easier, to leave this to
>>professional installation tools.
>>    
>>
>
>No I'm really ignorant about Windows.  I just put the app's files in
>C:/Program Files/appname because that's what one of the other developers
>said to do.
>
>  
>
>>>I do have Visual C++ installed on the development machine, if that helps.
>>>      
>>>
>>Isn't Visual C++ still coming with a restricted version of InstallShield?
>>If so, check if you can use that. It might give your release a sort of
>>professional shine...
>>    
>>
>
>Hmm, that's really really interesting.  How would I find out?  
>
>  
>
>>You'll certainly find out, that managing the registry/desktop file system
>>will cost most energy, if you want to release your apps to WindowsXP.
>>Once Python is running your apps, the rest is peanuts.
>>    
>>
>
>Oh man, I was hoping to avoid that level of hassle.  My app doesn't
>use any registry keys of its own, but I guess the Python executable
>does, and that stuff presumably has to be updated with every
>reinstall, and something is sure to eventually go wrong and corrupt
>the registry, if this is anything like the Windows that I'm used to
>hearing about.  Sigh.  Just how bad is that under Windows XP?  
>I'm used to Windows 95 completely falling apart at the slightest
>error but I have the impression that XP is a bit more solid.
>
>Maybe I'll have to just tell them to install Python 2.4 from its
>distro MSI and then I can put together a distutils setup.py thingie
>which they'd run separately.  That might be acceptable to the customer
>if it saves a lot of development effort and prevents user hassles when
>things go wrong.  It would sure be nice to have one of those slick
>one-click installers though.
>  
>
mate dont bugger around with all that. py2exe will make you a windows 
native exe to run. and for updates you just need to update it's 
library.zip. use NSIS for the installer, it can do anything you want an 
it's free.
it couldn't be more simple, shoot me an email if you need more


From jaime.suarez at crossmatch.net  Thu May 12 18:43:04 2005
From: jaime.suarez at crossmatch.net (jaime.suarez at crossmatch.net)
Date: 12 May 2005 15:43:04 -0700
Subject: tkFileDialog question
Message-ID: <1115937784.883303.131080@f14g2000cwb.googlegroups.com>

I am creating a very simple GUI with one Entry widget and
one Button.  The purpose of the Button widget is to Browse for
a file using tkFileDialog.askopenfilename().

I bind the button to a handler which spawns a tkFileDialog. This
works but the button __stays depressed__ after the handler returns!
Any ideas why?

class MyApp:
	def __init__(self, parent):
		self.myParent = parent
		self.myContainer1 = Frame(parent)
		self.myContainer1.pack()

		self.entry = Entry(self.myContainer1)
		self.entry.grid(row=0,column=0 columnspan=2)

		self.button1 = Button(self.myContainer1)
		self.button1.configure(text="...")
		self.button1.grid(row=0, column=2)
		self.button1.bind("<Button-1>", self.button1Click)
		self.button1.bind("<Return>", self.button1Click)


	def button1Click(self, event):
		filePick = tkFileDialog.askopenfilename()



From exarkun at divmod.com  Sun May  1 16:29:10 2005
From: exarkun at divmod.com (Jp Calderone)
Date: Sun, 01 May 2005 20:29:10 GMT
Subject: Whats the best Python Book for me
In-Reply-To: <zQade.1185052$Xk.1184944@pd7tw3no>
Message-ID: <20050501202910.15422.1161950491.divmod.quotient.12335@ohm>

On Sun, 01 May 2005 20:18:39 GMT, John Smith <not at home.com> wrote:
>I already know C/C++ programming and now wish to learn Python to do
>scripting for some games that are coming out. What book would you recommend.
>
>I am thinking Teach Your Self Python in 24 Hours is probably the best place
>to start...
>

  http://www.norvig.com/21-days.html is a nice site.

  For people who already have programming experience, I find http://docs.python.org/ref/ref.html and http://docs.python.org/lib/lib.html to be rather appropriate.  Another reference, <http://www.ibiblio.org/obp/thinkCSpy/>, while geared more towards newer programmers, is also a nice introduction to the Python language.

  Jp


From ivanlan at pauahtun.org  Tue May 17 23:22:00 2005
From: ivanlan at pauahtun.org (Ivan Van Laningham)
Date: Tue, 17 May 2005 21:22:00 -0600
Subject: Representing ambiguity in datetime?
References: <mailman.121.1116368416.8733.python-list@python.org>
	<5hvk81prupnpinq4ucspsikdqns5rmcaf0@4ax.com>
	<%vxie.25534$VH2.13093@tornado.tampabay.rr.com>
Message-ID: <428AB4D8.C925481F@pauahtun.org>

Hi All--

Ron Adam wrote:
> 
> John Machin wrote:
> 
> > On Tue, 17 May 2005 17:38:30 -0500, Terry Hancock
> > <hancock at anansispaceworks.com> wrote:
> >
> >
> >>What do you do when a date or time is
> >>incompletely specified? 

> > The reason the ranges for the month and day specifiers begin
> with zero is that MySQL allows incomplete dates such as
> '2004-00-00' to be stored as of MySQL 3.23.
> 
> So it seems using 0's for the missing day or month may be how to do it.
> 

This is somewhat the approach I took in order to allow users to specify
an incomplete Mayan date in order to list possibilities.  But instead of
0 (which is a valid entry in most Mayan date components), I used None. 
The web version can be found at

http://www.pauahtun.org/Calendar/tools.html (the "Search for Matching
Dates" button)

The paper describing the incomplete Mayan date tool is at: 
http://www.pauahtun.org/python_vuh.html

Metta,
Ivan
----------------------------------------------
Ivan Van Laningham
God N Locomotive Works
http://www.andi-holmes.com/
http://www.foretec.com/python/workshops/1998-11/proceedings.html
Army Signal Corps:  Cu Chi, Class of '70
Author:  Teach Yourself Python in 24 Hours


From flupke at nonexistingdomain.com  Tue May 24 03:32:34 2005
From: flupke at nonexistingdomain.com (flupke)
Date: Tue, 24 May 2005 07:32:34 GMT
Subject: Terminating a thread from the parent
In-Reply-To: <1116869282.045234.239040@g14g2000cwa.googlegroups.com>
References: <1116869282.045234.239040@g14g2000cwa.googlegroups.com>
Message-ID: <mMAke.99663$Ry3.5793991@phobos.telenet-ops.be>

DE wrote:
> Hello,
> 
> I have an app with embedded Python. Python scripts create their own
> threads and I need to terminate these threads at the point where the
> user wants to leave the application. I use threading.Thread as base
> classes.
> 
> I have tried to use call the join method of the python thread objects
> from C++. But although the call succeeds, the threads don't exit.
> 
> What is the proper way of doing this ? (e.g. how does the python shell
> do this ? )
> 
> Thanks in advance,
> 
> Devrim.
> 

I found this example somewhere. It shows how you terminate a thread.
As Peter said, it's the thread that terminates itself.

#!/usr/bin/env python
"""
testthread.py
An example of an idiom for controling threads

Doug Fort
http://www.dougfort.net
"""

import threading

class TestThread(threading.Thread):
     """
     A sample thread class
     """

     def __init__(self):
         """
         Constructor, setting initial variables
         """
         self._stopevent = threading.Event()
         self._sleepperiod = 1.0

         threading.Thread.__init__(self, name="TestThread")

     def run(self):
         """
         overload of threading.thread.run()
         main control loop
         """
         print "%s starts" % (self.getName(),)

         count = 0
         while not self._stopevent.isSet():
             count += 1
             print "loop %d" % (count,)
             self._stopevent.wait(self._sleepperiod)

         print "%s ends" % (self.getName(),)

     def join(self,timeout=None):
         """
         Stop the thread
         """
         self._stopevent.set()
         threading.Thread.join(self, timeout)

if __name__ == "__main__":
     testthread = TestThread()
     testthread.start()

     import time
     time.sleep(10.0)

     testthread.join()

Benedict


From fperez.net at gmail.com  Tue May 31 02:49:08 2005
From: fperez.net at gmail.com (Fernando Perez)
Date: Tue, 31 May 2005 00:49:08 -0600
Subject: [ANN] IPython 0.6.14.
Message-ID: <d7h185$sp5$1@sea.gmane.org>

Hi all,

I've just made the 0.6.14 release of IPython, mostly to fix the
inevitable bugs reported after the .13 one (though one big improvement
sneaked by).

IPython's homepage is at:

http://ipython.scipy.org

and downloads are at:

http://ipython.scipy.org/dist

I've provided RPMs (for Python 2.3 and 2.4, built under Fedora Core 3),
plus source downloads (.tar.gz).  Fedora users should note that IPython
is now officially part of the Extras repository, so they can get the
update from there as well (though it may lag by a few days).

There is also a native win32 installer which should work correctly for
both Python 2.3 and 2.4.

Debian, Fink and BSD packages for this version should be coming soon, as
the respective maintainers (many thanks to Jack Moffit, Andrea Riciputi
and Dryice Liu) have the time to follow their packaging procedures.

Many thanks to Enthought for their continued hosting support for
IPython, and to all the users who contributed ideas, fixes and reports.

I'd like to add a special thanks to Denis Rivi?re, Yann Cointepas and
Benjamin Thyreau for their hard work on the Qt improvements, and for
their overall hospitality.  Python really seems to have a remarkably
friendly community, worldwide!


WHAT is IPython?
----------------

1. An interactive shell superior to Python's default. IPython has many
features for object introspection, system shell access, and its own 
special command system for adding functionality when working interactively.

2. An embeddable, ready to use interpreter for your own programs. 
IPython can be started with a single call from inside another program, 
providing access to the current namespace.

3. A flexible framework which can be used as the base environment for 
other systems with Python as the underlying language.


Release notes
-------------

As always, the NEWS file can be found at http://ipython.scipy.org/NEWS,
and the full ChangeLog at http://ipython.scipy.org/ChangeLog.  The
highlights of this release follow.

This is mainly a bugfix release, to clean up the problems reported in
0.6.13.  As I said at the time, I intend to start new development now
(more details on that in a separate email).  As always, however, a few
new goodies managed to sneak by.

* A new -qthread option to support controlling Qt apps from within
ipython, similar to what -gthread and -wthread do for GTK/WX.  This was
contributed by Denis Rivi?re <nudz-AT-free.fr>, Yann Cointepas
<yann-AT-sapetnioc.org> and Benjamin Thyreau <Benji2-AT-decideur.info>.
   Many thanks to them!  The lack of Qt support was a glaring omission of
ipython's gui features, so I'm extremely happy to have their contribution.

    For those of you who may be matplotlib users as well, I should note
that as of mpl 0.81 (the next release, or use current CVS), the -pylab
option will also support interactive matplotlib use with the Qt backend.
   This is also thanks to work done by Denis, Yann and Benjamin against
the matplotlib Qt backend, in conjunction with the IPython improvements.

* New -e option to %run to suppress tracebacks from sys.exit() calls.
This can be very useful to silence all the noise generated when running
unittests from within ipython.

* New ';' escape to autoquote a line without splitting:

In [6]: ,foo a b c
------> foo("a", "b", "c")

In [7]: ;foo a b c
------> foo("a b c")

In the process, I fixed ',' quoting, which I'd broken in .13.

* Fix -wthread to work with WXPython 2.6 (this also impacts matplotlib
users who run the WX backend).

* Added new matcher (it goes at the end of the priority list) to do
tab-completion on named function arguments.  Submitted by George Sakkis
<gsakkis-AT-eden.rutgers.edu>.  See the thread at

http://www.scipy.net/pipermail/ipython-dev/2005-April/000436.html

for more details.

* Various other fixes for obscure bugs, but all of which caused reported
IPython crashes.  Details in Changelog.


Enjoy, and as usual please report any problems.

Regards,

Fernando.



From eternl_knight at yahoo.com  Wed May 11 09:20:19 2005
From: eternl_knight at yahoo.com (eternl_knight at yahoo.com)
Date: 11 May 2005 06:20:19 -0700
Subject: Decompyle will not Compile.
Message-ID: <1115817619.315446.230860@g44g2000cwa.googlegroups.com>

Ironically enough - the decompyle module will not compile on my
machine. I am using Python 2.2 and MSVC7 (i.e. .NET). However it tells
me there is an undefined external as follows:

"marshal_22_for_20.obj : error LNK2001: unresolved external symbol
initdecompyle/marshal_20"

I am writing code for Poser 6 (which has not as yet updated to the
latest Python) and have just lost a substantial chunk of code - part of
which being an algorithm I have been tweaking for a couple of weeks
now. As such, getting even part of the PYC to decompile would be a
great help.

Thanks,
B.J.Tolputt



From sjmachin at lexicon.net  Fri May 27 07:50:50 2005
From: sjmachin at lexicon.net (John Machin)
Date: Fri, 27 May 2005 21:50:50 +1000
Subject: Strange Execution Times
In-Reply-To: <mailman.161.1117175777.18027.python-list@python.org>
References: <3A252A14-E6A4-4F9B-AB49-B6B012A0BC12@curi.us>	<42964C28.8070400@lexicon.net>
	<mailman.161.1117175777.18027.python-list@python.org>
Message-ID: <4297099A.8090304@lexicon.net>

Elliot Temple wrote:
> 
> On May 26, 2005, at 3:22 PM, John Machin wrote:
> 
>>
>> Then post your summarised results back to the newsgroup for the  
>> benefit of all -- there's this vague hope that folk actually read  
>> other peoples' posts before firing off questions :-)
> 
> 
> Here is my new version.  It runs in about .65 seconds.  The trick?   
> Reading lines one at a time.  Please let me know if there's any bad  
> coding practices in it!
> 
> 

>     for line in f:
>         start, end = line.find(p1) + adjust, line.find(p2)
>         if end != -1:
>             digest = md5.new(line[start:end]).hexdigest()
>             out.write(line[:start] + digest + line[end:])
>         else:
>             out.write(line)
> 

Hmmm ... simple, elegant *and* runs fast!

Only two minor points:

1. Your code assumes that there can be no more than one password per 
line and that there are no "syntax errors". I'd add at least a comment 
to that effect.

2. The scan for p2 is wasted if the scan for p1 finds nothing. If p1 is 
found, you scan for p2 from the beginning of the line. Depending on the 
average length of a line, etc, that could make a difference. Try this:

for line in f:
     start = line.find(p1)
     if start == -1:
         out.write(line)
     else:
         start += adjust
         end = line.find(p2, start)
         if end == -1:
             raise CannotHappenError
         digest = md5.new(line[start:end]).hexdigest()
         out.write(line[:start] + digest + line[end:])

Cheers,
John


From CousinStanley at HotMail.Com  Sun May 22 12:40:48 2005
From: CousinStanley at HotMail.Com (Cousin Stanley)
Date: Sun, 22 May 2005 09:40:48 -0700
Subject: Running a python program during idle time only
In-Reply-To: <1116637560.499307.28700@o13g2000cwo.googlegroups.com>
References: <1116637560.499307.28700@o13g2000cwo.googlegroups.com>
Message-ID: <4290b6f0$1_1@spool9-west.superfeed.net>

| ....
| I'm wondering if anyone knows of a way that I could make so that
| the program will run at full speed only runs after the computer
| has been idle for a while.

   Perhaps looking at some ScreenSaver code could be useful ....

   I've never considered how this is done myself,
   but ScreeSavers seem to know that a user hasn't
   done anything for a while ....


-- 
Stanley C. Kitching
Human Being
Phoenix, Arizona

----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups
----= East and West-Coast Server Farms - Total Privacy via Encryption =----


From kasimov at i.com.ua  Thu May 26 09:25:14 2005
From: kasimov at i.com.ua (Maksim Kasimov)
Date: Thu, 26 May 2005 16:25:14 +0300
Subject: how to import a module from a arbitraty path?
In-Reply-To: <NtOdnXdnsZi5swjfRVn-oA@comcast.com>
References: <NtOdnXdnsZi5swjfRVn-oA@comcast.com>
Message-ID: <d74iui$u2v$1@news.tsystems.kiev.ua>

Andy Leszczynski wrote:
> I have a program which is going to dynamicly load components from some 
> arbitrary defined paths. How to do that?
> 
> A.
import sys
sys.path.append('/yourpath/libs')


-- 
Best regards,
Maksim Kasimov
mailto: kasimov at i.com.ua


From mauriceling at acm.org  Thu May 19 08:19:33 2005
From: mauriceling at acm.org (Maurice LING)
Date: Thu, 19 May 2005 22:19:33 +1000
Subject: Is Python suitable for a huge, enterprise size app?
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>	<jmbsl2-opn.ln1@lairds.us>	<1116442276.918194.194110@g44g2000cwa.googlegroups.com>
	<mailman.163.1116443300.8733.python-list@python.org>
	<428c479f$0$31062$626a14ce@news.free.fr>
Message-ID: <d6i08p$22o$1@domitilla.aioe.org>


> 
>> You can
>>see Python going down the sewer pipes, right on their faces.  Two,
>>security.  "This python sounds pretty interesting.  Tell me about the
>>security.  How can we prevent people from stealing our source code,
>>which we just spent millions developing?  ...  Hmm, trust the developers
>>out there not to peek?  Oh, sure, let's use it."  
> 
> 
> Just like Java, which is so easy to reverse-engineer...
> 
> 
It makes big difference (legally) to if the codes are there and someone 
sees it, to if the codes are locked in some packaged or zipped form and 
someone reverse-engineer it. It is legally as different as if you drop 
money on the ground and I pick it up, to pick-pocketing you and take the 
money.

Nobody seems to be able to understand this simple logic.

Yes, Java class files can be reverse-engineered quite easily but the act 
of doing that is criminal, unless performed under specified Council 
Directives (in EU) or under any statutory law in specific countries. But 
the act of looking at the codes if it is there is not criminal, just 
like reading a book in bookstore. If anyone can program in binary today, 
no codes will be safe with them anyway...

maurice


From jeb at jeremywilkins.freeserve.co.uk  Wed May  4 07:25:59 2005
From: jeb at jeremywilkins.freeserve.co.uk (Jeremy Wilkins)
Date: Wed,  4 May 2005 13:25:59 +0200 (CEST)
Subject: Problems calling cdrdao from python 2.3
Message-ID: <14029701.1115205959817.JavaMail.www@wwinf3103>

Hi all,

I'm trying to use popen3 to call cdrdao from within python, it gets half way through though then hangs. This is easy to replicate from the interpreter.

import popen2
child = popen2.Popen3('cdrdao disk-info --device 0,0,0'.split(' '), 1, 100)
child.fromchild.read()

The above code works fine, the code below reads half the cd then hangs though.

import popen2
child = popen2.Popen3('cdrdao read-cd --device 0,0,0 testfile'.split(' '), 1, 100)
child.fromchild.read()

If I close python, it seems to read in some more of the cd, but doesn't finish properly since no toc file is written.

Any help appreciated.

Jeb

PS: Please cc me as I'm not on the list

-- 

Whatever you Wanadoo:
http://www.wanadoo.co.uk/time/

This email has been checked for most known viruses - find out more at: http://www.wanadoo.co.uk/help/id/7098.htm



From mrmaple at gmail.com  Wed May 11 10:03:58 2005
From: mrmaple at gmail.com (James Carroll)
Date: Wed, 11 May 2005 10:03:58 -0400
Subject: HELP Printing with wxPython
In-Reply-To: <d5t4oj$sct$1@carabinieri.cs.interbusiness.it>
References: <d5t4oj$sct$1@carabinieri.cs.interbusiness.it>
Message-ID: <b273c74105051107031fab3176@mail.gmail.com>

Hi Mario,

>  Something like SendPrinter("some text\n")?

If you are doing this just for yourself, and you know you have a
printer that will really print just the plain text when you send it
plain text (like a dot matrix printer from the early 90s) then you can
probably open the printer device  and send it text.  Under windows you
can try opening LPT1  or on unix it's probably /dev/lpr or something
like that.

wxPython makes it pretty easy to give full modern support for any
printer, including letting the user select which printer to print to,
and getting a print preview, choosing paper size, etc.

I especially like the HtmlEasyPrinting write-up here:
   http://wiki.wxpython.org/index.cgi/Printing

-Jim




On 5/11/05, Mario <mario at nospam.noext> wrote:
> Hello all, I'm trying hard to make possible to print some simple text from
> python to the default printer using wxPython, after days of internet
> searches I found this page: http://wiki.wxpython.org/index.cgi/Printing but
> is impossible to use this script even if I do exactly as said there. I think
> the script is buggy or I am not able to use it, even if seems very simple to
> use...
> 
> Anyone can give me an hint on how to easily and simply print some text? Is
> there a library ready to download and use? Something like SendPrinter("some
> text\n")?
> 
> Thanks in advance if anyone can give any help.
> 
> Mario
> 
> --
> http://mail.python.org/mailman/listinfo/python-list
> 
>


From tim.leslie at gmail.com  Sun May 29 23:15:05 2005
From: tim.leslie at gmail.com (Tim Leslie)
Date: Mon, 30 May 2005 13:15:05 +1000
Subject: prime number
In-Reply-To: <1117421732.677244.237730@g49g2000cwa.googlegroups.com>
References: <1117421732.677244.237730@g49g2000cwa.googlegroups.com>
Message-ID: <d32b45350505292015143d4441@mail.gmail.com>

On 29 May 2005 19:55:32 -0700, lostinpython
<shanna_perkins_02 at hotmail.com> wrote:
> I'm having trouble writing a program that figures out a prime number.
> Does anyone have an idea on how to write it?  All I know is that n > 2
> is prim if no number between 2 and sqrt of n (inclusivly) evenly
> divides n.

This sounds remarkably like a homework problem, so I'm not going to
give you a full answer. Perhaps if you could be more specific about
which part's giving you trouble we could help you out with that.

If it finding square roots? is it checking for divisibility? is it
getting the loop to run through correctly? Is it some other problem?

Tim

> 
> --
> http://mail.python.org/mailman/listinfo/python-list
>


From rrr at ronadam.com  Fri May 13 03:30:23 2005
From: rrr at ronadam.com (Ron Adam)
Date: Fri, 13 May 2005 03:30:23 -0400
Subject: Python Documentation (should be better?)
In-Reply-To: <gKydnS_3j9bzoRnfRVn-2Q@comcast.com>
References: <5C99C308457E6D4EA5448EA52A66004A675A6E@or.mxim.com>	<17026.26789.592527.975821@montanaro.dyndns.org>	<mailman.398.1115843305.29826.python-list@python.org>	<eL2dnQqPycfr7R_fRVn-1w@comcast.com>	<mailman.470.1115911344.29826.python-list@python.org>	<86sm0sig7k.fsf@guru.mired.org>	<mailman.478.1115915427.29826.python-list@python.org>	<J_udnayhIptlAx7fRVn-3Q@comcast.com>	<mailman.0.1115960387.29328.python-list@python.org>
	<gKydnS_3j9bzoRnfRVn-2Q@comcast.com>
Message-ID: <4284578F.40606@ronadam.com>

Steven Bethard wrote:

> Ron Adam wrote:
> 
>>What I would like to see is something like the following for each item:
>>
>>0. reference @ sequence code
>>2. "Builtin" | "import <library>"
>>3. Type/class: Name/Syntax
>>4. Description with examples
>>6. Links to other references of this item in docs
>>7. Links to related functions or objects in same doc type
>>8. Keywords
> 
> 
> I'm unclear from your description.  What constitutes an "item"?  Only 
> functions?  Or are types and modules "items" too?

No, not only functions. Types, objects, methods, libraries, even 
packages.  The sequence code is what defines the tree.  It still works 
with other more abstract objects such as "Introduction", "Operators", 
"Notes on ___".  Some fields wouldn't be used in those cases.

The type/syntax field for general documents items, might be 
<instructional>, or <informational> or some other descriptive term.  The 
"keywords" themselves could also be records with definitions of what 
they are.  They would probably be under the 'Introduction/What is 
python' section of the docs and list what things are strings for example.


> One of the original complaints was that the page for string methods 
> wasn't easily accessible.  How does this address that problem?  I guess 
> you could search for all records with Type: str.  Would the constructor 
> for str show up this way?
> 
> STeVe

Let's see:  ( The quick_ref for str could have something like. )

"""
Python Quick Ref: n.n.n.n
__Builtin__
<type 'type'> str(object) -> string

Return a nice string representation of the object.
If the argument is a string, the return value is the same object.

s = str(123.456)
s = str([1,2,3])

Also see str: |tutor|full_docs|tech_docs|
Related to: |builtin.types|float|bool|int|long|
Keywords: |builtin|types|string|
"""

So from here you would click on the |full_docs| link and get a more 
complete description with all of the str's methods listed. Clicking on 
the string keyword link would give you an index of everything with the 
string keyword in it, in the quick_ref, (the current), docs.

This format, is based on the C pocket reference I have, it is very 
usable.  It could be printed in alphabetical order and you could find 
things very easily.  An index could be printed by keyword.  That could 
give you a by-subject method of finding things from the printed version.

Of course this wouldn't be something that could be put together over 
night.  And it will more than likely make shortcomings more obvious at 
first.  Holes where stuff should be, but that may be a good thing as 
they can then be fixed.

_Ron











From aahz at pythoncraft.com  Wed May 18 12:39:21 2005
From: aahz at pythoncraft.com (Aahz)
Date: Wed, 18 May 2005 09:39:21 -0700
Subject: REMINDER: BayPIGgies: May 19, 7:30pm (FIRST meeting at Google)
Message-ID: <20050518163921.GA24669@panix.com>

NOTE: we are no longer meeting at Stanford; the May meeting is at
Google in Mountain View.


The next meeting of BayPIGgies will be Thurs, May 19 at 7:30pm.

NOTE: to celebrate our first meeting at Google, Google will be providing
a buffet dinner starting at 6:45pm.

Alex will be repeating his OSCON/PyCon presentations about OOP and
design patterns -- with improvements!

BayPIGgies meetings alternate between IronPort (San Bruno, California)
and Google (Mountain View, California).  For more information and
directions, see http://www.baypiggies.net/


Advance notice: The June 9 meeting agenda has been set.  Drew Perttula
will be talking about his Python-based lighting system controller.

Advance notice: The July 14 meeting has a tentative plan for Alex
Martelli to deliver his "Black Magic" talk.

Advance notice: The August 11 meeting agenda has not been set.  Please send
e-mail to baypiggies at baypiggies.net if you want to suggest an agenda (or
volunteer to give a presentation).
-- 
Aahz (aahz at pythoncraft.com)           <*>         http://www.pythoncraft.com/

"And if that makes me an elitist...I couldn't be happier."  --JMS


From lbates at syscononline.com  Mon May 16 17:36:36 2005
From: lbates at syscononline.com (Larry Bates)
Date: Mon, 16 May 2005 16:36:36 -0500
Subject: Problem listing services with wmi
In-Reply-To: <mailman.62.1116274724.8733.python-list@python.org>
References: <mailman.59.1116271963.8733.python-list@python.org>	<4288FDF0.7040007@syscononline.com>
	<mailman.62.1116274724.8733.python-list@python.org>
Message-ID: <42891264.8060600@syscononline.com>

I guess I was wrong and it does work, but from Python Style Guide:

Whitespace in Expressions and Statements
  Pet Peeves

    Guido hates whitespace in the following places:

<snip>
    - Immediately before the open parenthesis that starts the argument
      list of a function call, as in "spam (1)".  Always write
      this as "spam(1)".

<end snip>

-Larry

Jean-S?bastien Guay wrote:
> Hello Larry,
> 
>> Might not be the problem but try without the leading
>> spaces before your method calls.
>>
>> for s in c.Win32_Service ():
>>
>> should be
>>
>> for s in c.Win32_Service():
>>  
>>
> 
> No change. For reference, the reason I know it's the c.Win32_Service()
> call that's throwing the exception is that if I try to run this :
> 
> import wmi
> import pythoncom
> 
> pythoncom.CoInitialize()
> c = wmi.WMI()
> services = c.Win32_Service()
> for s in services :
>  print s.Caption, s.State
> 
> the exception gets thrown on the "services = ..." line.
> 
> Out of curiosity, is there any reason why whitespace between the method
> name and parameter list parentheses isn't good? Because the code I
> posted before was copy-pasted from Tim Golden's site
> (http://tgolden.sc.sabren.com/python/wmi.html) and the spaces were there.
> 
> Thanks,
> 
> J-S
> 


From reneaguirre at yahoo.com  Thu May 19 17:05:05 2005
From: reneaguirre at yahoo.com (PyTJ)
Date: 19 May 2005 14:05:05 -0700
Subject: Shift-JIS to UTF-8 conversion
Message-ID: <1116536705.864784.163540@o13g2000cwo.googlegroups.com>

Hello everybody,

I need to convert a Japanese Shift-JIS CSV file to Unicode UTF-8.

My machine is a Windows 98 english computer with Python 2.3.4

Any hints?.



From peter at somewhere.com  Tue May 31 04:45:19 2005
From: peter at somewhere.com (Peter Maas)
Date: Tue, 31 May 2005 10:45:19 +0200
Subject: Newbie Here
In-Reply-To: <mailman.273.1117521603.18027.python-list@python.org>
References: <mailman.273.1117521603.18027.python-list@python.org>
Message-ID: <d7h86n$ebs$1@swifty.westend.com>

Mark Sargent schrieb:
> I want to get into python to use it for 
> Linux/Unix related stuff. A question I have, is, those of you who use it 
> for the same things, what do you primarily use it for. Could you show me 
> some examples.?

- little daily stuff e.g. transforming data
- sysadmin tasks (backup scripts)
- web applications (replacing asp/php)

-- 
-------------------------------------------------------------------
Peter Maas,  M+R Infosysteme,  D-52070 Aachen,  Tel +49-241-93878-0
E-mail 'cGV0ZXIubWFhc0BtcGx1c3IuZGU=\n'.decode('base64')
-------------------------------------------------------------------


From Florian.Lindner at xgm.de  Wed May 11 07:43:36 2005
From: Florian.Lindner at xgm.de (Florian Lindner)
Date: Wed, 11 May 2005 13:43:36 +0200
Subject: Problems with csv module
References: <d5sngn$l4$03$1@news.t-online.com>
	<mailman.338.1115809896.29826.python-list@python.org>
	<d5spph$ktm$01$1@news.t-online.com>
	<mailman.339.1115811314.29826.python-list@python.org>
Message-ID: <d5sr4v$2a0$04$1@news.t-online.com>

Richie Hindle wrote:

> 
> [Florian]
>> You mean that csv.reader can't work with unicode as the delimiter
>> parameter?
> 
> Exactly.  http://www.python.org/doc/2.3.5/lib/module-csv.html says:
> 
> "Note: This version of the csv module doesn't support Unicode input. Also,
> there are currently some issues regarding ASCII NUL characters.
> Accordingly, all input should generally be printable ASCII to be safe.
> These restrictions will be removed in the future. "
> 
> That note is still there in the current development docs, so it looks like
> it hasn't yet been fixed.

Uhh.. thanks!

How can I convert Unicode to ASCII?

Thx,

Florian


From merman at o2online.de  Sat May 28 16:02:33 2005
From: merman at o2online.de (TK)
Date: Sat, 28 May 2005 22:02:33 +0200
Subject: __call__
In-Reply-To: <1117293143.679768.286600@g43g2000cwa.googlegroups.com>
References: <42987f9a$0$26432$9b622d9e@news.freenet.de>
	<1117293143.679768.286600@g43g2000cwa.googlegroups.com>
Message-ID: <4298ce99$0$176$9b622d9e@news.freenet.de>

Simon Percivall wrote:
> Look at http://docs.python.org/ref/callable-types.html
> 
> 
>>>>class Test(object):
> 
> ...     def __call__(self):
> ...         print "the instance was called"
> ...
> 
>>>>t = Test()
>>>>t()
> 
> the instance was called
> 
> Is this what you wanted?

Sorry but it does not work. Here's my code:

 >>> class Test(object):
...     def __call__(self):
...         print 'Hi'
...
 >>> Test()
<__main__.Test object at 0x3e6d0>


o-o

Thomas



From rrr at ronadam.com  Sat May 14 11:22:46 2005
From: rrr at ronadam.com (Ron Adam)
Date: Sat, 14 May 2005 11:22:46 -0400
Subject: Python 2.4 & BLT ?
In-Reply-To: <4285E268.1010900@teledisnet.be>
References: <4280f791$0$344$4d4efb8e@read.news.be.uu.net>	<mailman.317.1115769735.29826.python-list@python.org>	<42823F8D.6010705@teledisnet.be>	<mailman.408.1115850748.29826.python-list@python.org>	<4283be30$0$349$4d4efb8e@read.news.be.uu.net>
	<mailman.505.1115946013.29826.python-list@python.org>
	<4285E268.1010900@teledisnet.be>
Message-ID: <428617C6.4000406@ronadam.com>

StepH wrote:

>>
>> A little googling found the following which may give you a clue or 
>> ideas of further searches.  Also run a virus scanner on the file 
>> before hand.
>>
>> http://www.noteworthysoftware.com/composer/faq/90.htm
> 
> 
> Argg...  I always find me stupid when i don't have find myself a such 
> easy solution.  Running the .exe from C:\temp works, but now, even if 
> the installation succes, i'm not able to run the pmw sample based on 
> it...  Looks like i've now to re-install pmw or somethings like that.
> 
> I'll find it...
> 
> Thanks a lot for your help.
> StepH.
> 

Glad I could help. It's a shame BLT has the installation issues it does 
on windows.  It really needs to be repackaged correctly.  Also you will 
probably also need to do the following which I posted earlier on the 
group, but will recopy it here as well.  (That way it will be easier for 
me to find it next time I need it. ;-)


BLT doesn't install in the correct directories on Windows. I found this
helpful.

     1.  Install BLT 2.4u into C:/Python23/tcl, using BLT's installer
(the one for Tcl/Tk 8.3). This gives you bin, include, and lib
subdirectories of C:/Python23/tcl, with all the BLT stuff in them.
     2. Copy C:/Python23/tcl/lib/blt2.4 into C:/Python23/tcl/tcl8.3.
     3. Put the BLT DLLs in a directory on your PATH (not necessarily a
system directory, it just has to be on your PATH)

Clipped from: http://heim.ifi.uio.no/~hpl/scripting/software.html


Cheers,
Ron_Adam



From gtcopeland2002 at yahoo.com  Fri May  6 13:58:16 2005
From: gtcopeland2002 at yahoo.com (Greg Copeland)
Date: 6 May 2005 10:58:16 -0700
Subject: inheritance with new-style classes - help
Message-ID: <1115402296.414753.324000@f14g2000cwb.googlegroups.com>

Okay, I have:
class Base( object ):
    def __init__( self ):
        self._attrib = "base"
        print "Base"


    def real( self ):
        print "Base.real() is calling base.virtual()"
        self.virtual()


    def virtual( self ):
        print "Base virtual()"
        pass



class Mother( Base ):
    def __init__( self ):
        print "Mother"
        super( Mother, self ).__init__()


    def virtual( self ):
        print self._attrib
        print "virtual = Mother"


class Father( Base ):
    def __init__( self ):
        print "Father"
        super( Father, self ).__init__()

    def virtual( self ):
        print self._attrib
        print "virtual = Father"



class Child( Mother, Father ):
    def __init( self ):
        print "Child"
        super( Child, self ).__init__()

        self._childAttrib = "child"


    def virtual( self ):
        print "base attribute = " + self._attrib
        print "virtual = Child"
        print "childAttrib = " + self._childAttrib



rename = Child


>>> x = rename()
Mother
Father
Base
>>> x.virtual()
base attribute = base
virtual = Child
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File "/usr/tmp/python-8zAJdg.py", line 51, in virtual
AttributeError: 'Child' object has no attribute '_childAttrib'

Hmmm...interesting....but okay...let's look some more...

>>> x.__dict__
{'_attrib': 'base'}

What??!  Where the heck did self._childAttrib go?  And why?

Can someone please shine some light here?  Please?


Thanks in advance,

Greg



From bvande at po-box.mcgill.ca  Fri May 27 09:58:50 2005
From: bvande at po-box.mcgill.ca (Brian van den Broek)
Date: Fri, 27 May 2005 09:58:50 -0400
Subject: Case Sensitive, Multiline Comments
In-Reply-To: <Xns96635F84E6901duncanbooth@127.0.0.1>
References: <1117137316.140791.210430@g14g2000cwa.googlegroups.com>
	<8664x5y92g.fsf@guru.mired.org> <429654DA.9050903@lexicon.net>
	<1117154013.092736.298310@g14g2000cwa.googlegroups.com>
	<qc7d9112aqr5tj8devjeaign84dc21ti8p@4ax.com>
	<Xns96635F84E6901duncanbooth@127.0.0.1>
Message-ID: <4297279A.2070306@po-box.mcgill.ca>

Duncan Booth said unto the world upon 2005-05-27 04:24:

<snip>

> There are arguments that, especially for beginners, case sensitivity 
> introduces an extra level of complexity, but the cost of losing this 
> complexity would be to make Python a poor relation amongst programming 
> languages.


Well, this is just one man's anecdote, but Python was my first 
language since some BASIC many moons ago, and the case sensitivity 
neither got in my way, nor felt complex. Perhaps Python beginners with 
background in case insensitive languages do experience it differently.

At any rate, since the sequence of characters 'somename' and 
'SomeName' are different sequences, treating them as different names 
strikes me as the obviously right thing to do.

Best to all,

Brian vdB



From ruach at chpc.utah.edu  Thu May 19 12:17:22 2005
From: ruach at chpc.utah.edu (Matthew Thorley)
Date: Thu, 19 May 2005 10:17:22 -0600
Subject: ElementTree and xsi to xmlns conversion?
In-Reply-To: <mailman.193.1116487191.8733.python-list@python.org>
References: <d6gbo5$fm6$1@vegh.ks.cc.utah.edu>
	<mailman.193.1116487191.8733.python-list@python.org>
Message-ID: <d6ie6j$tj$1@vegh.ks.cc.utah.edu>

Thanks for the reply I am understanding it better now. Please forgive my
ignorance. So the xsi is just an arbitrary name space prefix, I get that
now. And it make sense to me why it gets converted to an xmlns.

What I really need to know is why it is not inherited by the child
elements? From what I an told, I need the second namespace, so that I
can point to the schema, so that I can validate the document.

Is that the wrong way to link to the schema? Can I force both namespaces
to be inherited by the child elements?

Thanks for all the help
-Matthew


From tim.tadh at gmail.com  Sun May  1 23:16:12 2005
From: tim.tadh at gmail.com (tim.tadh)
Date: 1 May 2005 20:16:12 -0700
Subject: Need Help Creating File Structures
Message-ID: <1115003772.186147.3140@o13g2000cwo.googlegroups.com>

Hi

I am writing a program that allows a user to annotate text documents,
and later html, html variants, and PDF files. My program is able to
load multiple documents at once and creat linked anotations between
these documents. Therefore i want to create a custom system to save the
files. Ideally I want a project description file that gives the program
all the neccessary information to build the project when loaded, the
document files, and the annotations for the documents. Each document
should have its own annotation file. Finally I wanted to put it all in
a compressed archive so all the end user has to do is click on the
file, and does not have to worry about the annotation files and so
forth.

However I have no experience doing this, and was wondering what the
best way to do this would be.

Cheers

Tim Henderson



From sjmachin at lexicon.net  Mon May 16 09:39:42 2005
From: sjmachin at lexicon.net (John Machin)
Date: Mon, 16 May 2005 23:39:42 +1000
Subject: problem uploading ZIP file tp PyPI
References: <spsb81hia4m5n136tp0sgpuldd0gon555m@4ax.com>
	<4287fd5e$0$4655$afc38c87@news.optusnet.com.au>
	<1116210182.148076.159110@g44g2000cwa.googlegroups.com>
	<42888e05$0$5180$afc38c87@news.optusnet.com.au>
Message-ID: <c18h81pj5bsi149rknvjemq2v8vo8794ei@4ax.com>

On Mon, 16 May 2005 22:11:49 +1000, richard
<richardjones at optushome.com.au> wrote:

>John Machin wrote:
>> richard wrote:
>>> John Machin wrote:
>>> > Sorry in advance if this is not the correct forum ...
>>>
>>> Quite. The support link for PyPI is in the sidebar of the site.
>>>
>> 
>> Tried that, when I was trying to register and getting strange error
>> messages about the user name, like "John Machin" and "John_Machin" were
>> not "ascii" [it finally permitted "sjmachin"]. The response volume
>> could not be likened to that of a fire-hose.
>
>You mean the request you put in two days ago?

Yes, that one.

> Sorry I've not got around to
>responding yet. It was admittedly low on my priority list because you were
>the only person reporting the issue (out of hundreds of successful
>registrations). I will now fill in the details you've just provided (ie the
>input you used which broke the interface) 

Not me, yer 'onour; it wuz broken already.


>so that when I get around to
>fixing it I'll know what I'm looking for.
>
>
>> Which is precisely how the file in question was generated:
>> 
>> setup.py sdist --format=zip
>
>Try without the --format arg. The code is being too paranoid.

Result: (A) produces a zip file with only minor differences
(presumably a timestamp):


C:\devel\xlrd\build\dist>fc /b  xlrd-0.3a1.zip
f:\xlrd_dist\xlrd-0.3a1.zip
Comparing files xlrd-0.3a1.zip and F:\XLRD_DIST\XLRD-0.3A1.ZIP
0000000A: 59 B8
0000000B: B9 9E
0000000C: B0 AF
00009660: 59 B8
00009661: B9 9E
00009662: B0 AF

C:\devel\xlrd\build\dist>dir *3a1*.zip

16/05/2005  11:10p              39,436 xlrd-0.3a1.zip

C:\devel\xlrd\build\dist>dir f:\xlrd_dist\xlrd-0.3a1.zip

15/05/2005  07:53p              39,436 xlrd-0.3a1.zip

(B) Exactly the same result from the PyPI upload attempt.


> The code is being too paranoid

Which code (distutils or PyPI server) is being paranoid about what???



From fredrik at pythonware.com  Tue May 17 10:40:52 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 17 May 2005 16:40:52 +0200
Subject: Bug in Elementtree/Expat
References: <1116331113.765085.281490@g47g2000cwa.googlegroups.com>
Message-ID: <d6cvoh$do5$1@sea.gmane.org>

alainpoint at yahoo.fr wrote:

> I use Elementtree to parse an elementary SVG file (in fact, it is one
> of the examples in the "SVG essentials" book). More precisely, it is
> the fig0201.svg file in the second chapter.
> The contents of the file are as follows (i hope it will be rendered
> correctly):
> <!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.0//EN"
>    "http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd">
> <svg width="200" height="200">
> <title>Default User Coordinates</title>
> <desc>Shows a rectangle on a grid in default user coordinates</desc>
> <image xlink:href="default_ruler.svg" x="0" y="0" width="200"
> height="200"/>
> <g transform="translate(40,40)">
> <rect x="10" y="10" width="50" height="30"style="stroke: black; fill:
> none;"/>
> </g>
> </svg>
>

> xml.parsers.expat.ExpatError: unbound prefix: line 6, column 1

> The problem seems to lie with the xlink:href tag. If i remove the xlink
> namespace, it then does not produce a traceback.

so where in that file do you see an xlink declaration?

(elementtree doesn't fetch external DTD:s, so putting in the DTD file
doesn't really help).

adding

    xmlns:xlink="http://www.w3.org/1999/xlink"

to the "svg" element should make the problem go away.

</F> 





From danb_83 at yahoo.com  Sat May 14 05:23:55 2005
From: danb_83 at yahoo.com (Dan Bishop)
Date: 14 May 2005 02:23:55 -0700
Subject: replace text in unicode string
References: <1116058664.847601.293790@z14g2000cwz.googlegroups.com>
Message-ID: <1116062635.443040.202740@o13g2000cwo.googlegroups.com>

Svennglenn wrote:
> I'm having problems replacing text in a
> unicode string.
> Here's the code:
>
> # -*- coding: cp1252 -*-
>
> titel = unicode("?", "iso-8859-1")
> print titel
> print type(titel)
>
> titel.replace("?", "a")
>
> When i run this program I get this error:
>
>     titel.replace("?", "a")
> UnicodeDecodeError: 'ascii' codec can't decode byte 0xe4 in position
0:
> ordinal not in range(128)
>
> How can i replace text in the Unicode string?

titel = titel.replace(u"?", "a")



From peter at engcorp.com  Mon May 16 05:13:05 2005
From: peter at engcorp.com (Peter Hansen)
Date: Mon, 16 May 2005 05:13:05 -0400
Subject: Detect console close
In-Reply-To: <mailman.36.1116233920.8733.python-list@python.org>
References: <mailman.36.1116233920.8733.python-list@python.org>
Message-ID: <E7mdneRHfOXa-RXfRVn-pg@powergate.ca>

new pip wrote:
> Actually I want to do some clean up (or operation) before the program
> actually exits. Is there any way to do that?

Ah, that's easier. :-)

It might help (if this answer isn't sufficient) to post a snippet of 
code showing a very small example that we could talk about.  You might 
have a "special" situation, something unusual you aren't telling us 
about yet.  (Also, mentioning your platform and versions is always a 
good idea, but maybe not relevant in this case.)

There are a few options:

1. "import atexit" and use that standard library module's features.

2. put a "try/finally" block around the bulk of your code, with cleanup 
code in the "finally" clause

3. Just stick the cleanup code at the end of your module...  (this one 
is too obvious, so if neither of the above answers work for you, and 
this one is insufficient, please post example code so we know where you 
are...)

-Peter


From alexander.fillips at telefonica.de  Mon May  9 07:34:59 2005
From: alexander.fillips at telefonica.de (Alexander Fillips)
Date: Mon, 09 May 2005 13:34:59 +0200
Subject: is there a python object which can interpret java-script?
Message-ID: <427f4ae5$0$11234$750803fa@corp.news.telefonica.de>

Hi,

my short question:

is there a python object which can interpret java-script?

the whole story ;-)

I wrote some streaming-scripts for the xbox mediaplayer which supports 
python. for a new script i tried to filter the stream-url from an 
website. it seems, that the site ist using java-script and the url is 
only visible if the java-script was interpreted. i am using urllib to 
retrieve the page.. but it seems that urllib is not ready for 
java-script...

the site:
http://www.prosieben.de/show_comedy/bullyrick/popup_video/07029//

the url i need:
http://redirect.streaming.szm.de/redirect/redirect.php?type=vod&codec=ms&stream=Pro7/show_comedy/bullyrick/bur_007_plattenladen.wmv&


i hoper someone has an idea...

cya
Alex


From saravanan.d at siemens.com  Tue May 10 01:39:37 2005
From: saravanan.d at siemens.com (Saravanan D)
Date: Tue, 10 May 2005 11:09:37 +0530
Subject: Exception in Python 2.3.3 Interpreter
References: <1115627455.511797.7590@o13g2000cwo.googlegroups.com>
	<mailman.216.1115654664.29826.python-list@python.org>
Message-ID: <d5phes$4b0$2@news.mch.sbs.de>


"Terry Reedy" <tjreedy at udel.edu> wrote in message
news:mailman.216.1115654664.29826.python-list at python.org...
>
> "Saravanan" <saravanand at vsnl.net> wrote in message
> news:1115627455.511797.7590 at o13g2000cwo.googlegroups.com...
> > Im running Python Application as a Windows Service (using windows
> > extensions).  But, sporadically the application crashes (crash in
> > Python23.dll) and this stops the service.  This problem cann't be
> > reproduced easily in my system and the call stack generated by the
> > application is given below. Please note that the call stack generation
> > is taken from crash dump file.
> >
> > The crash occured at the following line:
> > c = strcmp(vname, wname) (object.c)
>
> I am puzzled by this line.  I can't see how it could execute.
> Is this C or Python code? from the distribution or your code?
> How is the result of strcmp (-1, 0, 1 ?) supposed to be callable?
> Is this guarded by a rarely triggered condition?
>
> Terry J. Reedy

The above one is C Code.   The same line is present in object.c file of
Python Interpreter Source and the function name is default_3way_compare().

Windows debugger points to above line in the event of crash of my
application.

Saravanan D




From gralex1974 at ua.fm  Sun May 22 03:29:50 2005
From: gralex1974 at ua.fm (gralex)
Date: Sun, 22 May 2005 10:29:50 +0300
Subject: GridCellEditor
Message-ID: <d6pcha$2jll$1@pandora.alkar.net>

Hi,all!

How i can manually start CellEditor in wxGrid for spicified Cell in grid in 
my programm:

mygrid.SetGridCursor(2,3)
mygrid.MakeCellVisible(2,3)
#.... starting editing....... ??????????????
mygrid.ShowCellEditControl() don't working...

help me, please... 




From jack at performancedrivers.com  Thu May  5 12:38:37 2005
From: jack at performancedrivers.com (Jack Diederich)
Date: Thu, 5 May 2005 12:38:37 -0400
Subject: Adding new methods to new-style classes dynamically
In-Reply-To: <1115282109.707219.163660@f14g2000cwb.googlegroups.com>
References: <1115282109.707219.163660@f14g2000cwb.googlegroups.com>
Message-ID: <20050505163837.GC3014@performancedrivers.com>

On Thu, May 05, 2005 at 01:35:09AM -0700, Max Derkachev wrote:
> Good day to all.
> 
> Some time ago I'd been playing with a framework which uses dynamic
> class creation havily. Say, I could do:
<snip>
> 
> #well, try this with the new-style class
> class A(object):
>     pass
> 
> # the new-style __dict__ is a dictproxy object
> A.__dict__[meth_name] = lambda self: type(self)
> >>Traceback (most recent call last):
> >>  File "<interactive input>", line 1, in ?
> >>TypeError: object does not support item assignment
> 
> Is there other way to add/change methods to new-style classes
> dynamically?

>>> import new
>>> dir(new)
['__builtins__', '__doc__', '__file__', '__name__', 'classobj', 'code', 'function', 'instance', 'instancemethod', 'module']
>>> def foo(self):
...   print "FOO!"
>>> A.foo = new.instancemethod(foo, None, A) # func, object, class
>>> A.foo
<unbound method A.foo>
>>> a = A()
>>> a.foo
<bound method A.foo of <__main__.A object at 0xb7e0b4cc>>
>>> a.foo()
FOO!

-jackdied




From john at castleamber.com  Mon May 23 19:31:28 2005
From: john at castleamber.com (John Bokma)
Date: 23 May 2005 23:31:28 GMT
Subject: What are OOP's Jargons and Complexities?
References: <1116843761.619249.144790@g47g2000cwa.googlegroups.com>
	<bAske.14563$yx.14338@fe08.lga>
Message-ID: <Xns965FBC6B3B3DBcastleamber@130.133.1.4>

John W. Kennedy wrote:

> inescapable necessity for compiling to efficient object code. Strong 
> typing has been a feature of mainstream programming languages since the 
> late 1950's.

Give Lee another century and he will get there, hopefully :-D.

-- 
John                               MexIT: http://johnbokma.com/mexit/
                           personal page:       http://johnbokma.com/
        Experienced programmer available:     http://castleamber.com/
            Happy Customers: http://castleamber.com/testimonials.html


From fredrik at pythonware.com  Mon May  9 15:02:39 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Mon, 9 May 2005 21:02:39 +0200
Subject: Advice needed on __del__
References: <d5o1s1$8h3$1@sea.gmane.org>
Message-ID: <d5obmp$cqh$1@sea.gmane.org>

Andr? Roberge wrote:


> This morning I had the following thought:
> I can, when I create a Jekyll object, update
> an outside_list.
> If, somehow, I could update that list when
> a Jekyll object disappears
> (perhaps by using __del__, which I have never touched)

Python makes no guarantees whatsover about when and how to
run __del__, so relying on it to remove user-visible resources is a
rather bad idea.

> Any suggestions?

why wouldn't

    def subplot():
         Evil = Jekyll()   # Evil_twin gets created and displayed
         Evil.doStuff()    # Evil_twin does stuff on the screen
         Evil.destroy()

work for you?

</F>





From fredrik at pythonware.com  Fri May 27 02:04:19 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Fri, 27 May 2005 08:04:19 +0200
Subject: using timeit for a function in a class
References: <ZFjle.101596$KL7.6197297@phobos.telenet-ops.be><mailman.138.1117118325.18027.python-list@python.org>
	<Qusle.102302$h05.6039656@phobos.telenet-ops.be>
Message-ID: <d76d56$gtg$1@sea.gmane.org>

"flupke" wrote:

> ? i think you missed some of the code
> ...
>      s = """
>      test = TimeTest()
>      test.f()
>      """
> ...
>
> So the function is being called (as i said, it prints the hello message).

timeit is a benchmark utility.  it's supposed to call your function
enough times to get an accurate result.

if you want to time a single call, using timeit instead of time is
just plain silly.

</F>





From exarkun at divmod.com  Thu May  5 09:19:21 2005
From: exarkun at divmod.com (Jp Calderone)
Date: Thu, 05 May 2005 13:19:21 GMT
Subject: Sockets
In-Reply-To: <7nnj71thsiv0pnd316imovuobnbbeqnjrq@4ax.com>
Message-ID: <20050505131921.15422.472481885.divmod.quotient.19994@ohm>

On Thu, 05 May 2005 17:11:08 +0800, Dan <dan at dontspammecauseidontlikit.com> wrote:
>
>
>I have a problem and I don't quite know how to implement the solution.
>
>I'll have a server application that will listen on a tcp port and make
>many similtaneous connections to remote clients.  From time to time,
>I'll need to write a small amount of data on one of those sockets.  A
>notification to write to one of the sockets will come from another
>program/process.
>
>I think that the best way to send the notification to this server
>application is via a udp message.  Alternatively, I could use tcp, but
>I don't think I'll need the extra complexity for what I want to do.
>(Other suggestions welcome.)

  UDP is actually more complex than TCP.  I recommend sticking with TCP until you have a better reason (eg, you need to communicate simultaneously with tens of thousands of clients).

>
>The server application will multiplex the connections using 'select',
>so much of the time it will be blocked on 'select'.
>
>My problem is how to also listen on a udp port while the process is
>blocked by 'select'.  Should I run a separate thread?  And if so can I
>share the socket connection across the two threads?  (Thread 1 will be
>accepting client connections, thread 2 will we writing data to it.)
>Or should I simply let 'select' time out after some period?
>
>I'm a bit lost as to how to do this, I hope someone can put me on the
>right track.  Any solution that I use should be applicable on Linux
>and Windows platforms.

  I recommend using Twisted.  Here's a sample application that accepts connections, waits on messages from each client, and then transmits another message to all other clients in response to receiving one (untested code):

    from twisted.internet import reactor, protocol
    from twisted.protocols import basic

    # Define the protocol with which we will handle all 
    # incoming connections
    class ClientMessageProtocol(protocol.LineReceiver):

        # When a connection is established, append this 
        # instance to the factory's list of connected 
        # clients, so it can send messages to this client 
        # when necessary.
        def connectionMade(self):
            self.factory.clients.append(self)

        # Likewise, remove the instance when the connection 
        # is lost.
        def connectionLost(self):
            self.factory.clients.remove(self)

        # Every time a whole line is received, tell the factory 
        # about it.
        def lineReceiver(self, line):
            self.factory.lineReceived(self, line)

    class ClientMessageFactory(protocol.ServerFactory):
        # Indicate the protocol to be instantiated for each
        # connection to this factory.
        protocol = ClientMessageProtocol

        # At startup, make an empty clients list.
        def startFactory(self):
            self.clients = []

        # Whenever a client tells us they received a line, send
        # a short message to every other connection client.
        def lineReceived(self, client, line):
            for cl in self.clientz:
                if cl is not client:
                    cl.sendLine("%s sent me a message: %r" % (client, line))

    # Start the server on TCP port 54321
    reactor.listenTCP(54321, ClientMessageFactory())

    # Run the main event loop
    reactor.run()

  Learn more about Twisted on its website: http://www.twistedmatrix.com/

  Jp


From cjbottaro at alumni.cs.utexas.edu  Thu May 12 11:20:45 2005
From: cjbottaro at alumni.cs.utexas.edu (Christopher J. Bottaro)
Date: Thu, 12 May 2005 10:20:45 -0500
Subject: Python Documentation (should be better?)
References: <5C99C308457E6D4EA5448EA52A66004A675A6E@or.mxim.com>	<17026.26789.592527.975821@montanaro.dyndns.org>
	<mailman.398.1115843305.29826.python-list@python.org>
	<eL2dnQqPycfr7R_fRVn-1w@comcast.com>
Message-ID: <d5vrpo$54n$1@sea.gmane.org>

Steven Bethard wrote:

> Ivan Van Laningham wrote:
>> The Python docs are not ideal.  I can never remember, for instance,
>> where to find string methods (not methods in the string module, but
>> methods with '')
> 
> Hmmm... Well going to http://docs.python.org/ and typing "string
> methods" into the search box gives, as the first hit:
> 
> http://docs.python.org/lib/string-methods.html
> 
> Even if you just search for "string", that URL is the second hit, and
> pretty clearly the right one from the title.
> 
> STeVe

Heh, searching "dict methods" didn't produce the correct results on the
first page.  "dictionary methods" did.  searching for "append" returned the
array's module page as the first result, and list's module page as the 8th
result.  Search for "static" came up with nothing.  Search for
"staticmethod" came up with the built-in-funcs page, from which I had to
search again for "staticmethod".

The search mechanism isn't all that great (imo anyways).  Honestly, neither
is the PHP one, except when you are only searching the function list.  Then
its the bomb.  I also like how each PHP function gets its own page and each
page is full of examples.  And I love how each page shows related
functions.  Granted its easier to do the function list search for PHP
because there are no namespaces or classes, but still I think Python could
do something similar.  Say for instance search for "append" and it will
come back with a page for list's append, a page for array's append, etc.

My idea for a manual's table of contents:

1.  Variables
2.  Conditional and Branching Constructs
3.  Looping Constructs
4.  Functions
5.  Modules
6.  Classes
7.  Exceptions
8.  Built-in
   8.1  Functions
   8.2  Types

Of course there should be more detailed sublevels.  The tutorial (at least
chapters 3-11) make a good (partial) manual.  I think those chapters should
be the basis for a real manual vs. a tutorial.

If I wanted to learn about "types" in Python, where do I look?  The PHP
manual has a whole section on the built-in types, how to get the type of a
var, how to change cast the type of a var, etc.  I think that is such an
important and basic part of any language, yet its scattered all over Python
documention, difficult to find (i.e. not in a manual, but the library
reference).

I guess what I'm trying to say is that there should be a "manual" which is
half way between the tutorial and the library reference, that is organized
more like a traditional manual (whatever that means, right?) and is more
easily searchable.

-- C



From phillip.watts at anvilcom.com  Tue May 10 12:51:02 2005
From: phillip.watts at anvilcom.com (phil)
Date: Tue, 10 May 2005 11:51:02 -0500
Subject: Desrtuctor WOES, was Advice on __del__
References: <d5o1s1$8h3$1@sea.gmane.org><d5obmp$cqh$1@sea.gmane.org>	<427FBAD4.3070004@anvilcom.com><d5ogv2$2k9$1@sea.gmane.org>	<42800279.3B26FFF3@pauahtun.org>
	<42800ACD.5060802@anvilcom.com> <d5pkaq$sbm$1@sea.gmane.org>
Message-ID: <4280E676.7020206@anvilcom.com>

> you haven't answered my question, btw: why are you using __del__
> to do something that the garbage collector should do for you?


After more reading it seems I have made an ass of my self on this
subject.  Here is my problem at length.

I teach high school geometry.  I have created a program with a
scalable graph on which to make drawings to illustrate concepts.
This is working well.


I like to MOVE the objects one pixel at a time or ROTATE them
one degree at a time so the students can follow the progress of
the lesson.

A script of a simple drawing might be:

scale 100
color red
tr1 = triangle from x y base baselength angles 30 60
rotate centerx centery degrees objlist   # eg tr1

This would create an instance of triangle which would
create an instance of polygon which would create 3
instances of lines, which are point pairs.

class line:
	def __init__(s,glob,argl,color=''):
	    s.glob = glob
	    :::
             :::

             x0 = a0  * s.glob.scale + 400
             y0 = 300 - b0  * s.glob.scale
             x1 = a1  * s.glob.scale + 400
             y1 = 300 - b1 * s.glob.scale
	    s.obj = glob.can.create_line(x0,y0,x1,y1,
					width=glob.width,fill=s.color)
	def __del__(s):
	    s.glob.can.delete(s.obj)

This calls Canvas.create_line.  Tkinter keeps its own list of
drawn objects.  I store the ref in s.obj

NOW when I rotate the triangle 45 degrees, recomputing the points
each time, it creates 45 new instances of triangle but dels the
old one.  __del__  then deletes the Canvas line object.

Without that, the list of objects grows very long,
and refresh gets slow.
This is a very complex program, 1000 lines now, propably 2000
lines eventually.  There are dozens of places where I depend on
__del__ deleteting canvas objects.

SO: without significant rewrite of each class such as triangle
and line, how can I ensure those canvas lines get deleted?
You don't really need to understand Canvas, just trust me
I have to delete those objects and they are not properties of the
class which go away with garbage collection.

Thanks.



From fredrik at pythonware.com  Thu May 12 14:40:24 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 12 May 2005 20:40:24 +0200
Subject: Importing modules
References: <1115816747.292060.292200@o13g2000cwo.googlegroups.com><1115835958.080135.290900@o13g2000cwo.googlegroups.com><mailman.460.1115905629.29826.python-list@python.org>
	<1115909950.205983.224430@o13g2000cwo.googlegroups.com>
Message-ID: <d607g8$hnk$1@sea.gmane.org>

qwweeeit at yahoo.it wrote:

> Another item (for me...) difficult, is "import modules", and "plenty of
> information" (as you said) does not help me much: the mechanism of
> variable visibility and namespaces is not clear to me.

have you read this

    http://effbot.org/zone/python-objects.htm

and

    http://effbot.org/zone/import-confusion.htm

?

</F>





From roy at panix.com  Thu May 26 11:54:33 2005
From: roy at panix.com (Roy Smith)
Date: 26 May 2005 11:54:33 -0400
Subject: __init__() not called automatically
References: <1117081917.760603.82610@z14g2000cwz.googlegroups.com>
	<mailman.121.1117083356.18027.python-list@python.org>
	<4295f081$0$19214$626a14ce@news.free.fr>
Message-ID: <d74rfp$s36$1@panix2.panix.com>

bruno modulix  <onurb at xiludom.gro> wrote:
> I've always explicitelly used the (implied) 'this' pseudo-pointer in
> Java, C++ etc. The wart is in all those languages that don't makes it
> mandatory IMHO !-)

And the correlary wart in Python is that the first argument to a
method is not required to be called "self".  The vast majority of
people use "self", but every once in a great while you run into some
yahoo who feels this is the right place to express his creativity and
call it "this", or "obj", or some other obfuscation.


From bill.pursell at gmail.com  Fri May 13 03:32:31 2005
From: bill.pursell at gmail.com (bill)
Date: 13 May 2005 00:32:31 -0700
Subject: bash like expansion
References: <1115923533.263490.67970@g44g2000cwa.googlegroups.com>
	<86u0l8gjl7.fsf@guru.mired.org>
	<1115963445.944809.211740@g43g2000cwa.googlegroups.com>
Message-ID: <1115969551.489797.195630@g43g2000cwa.googlegroups.com>

Hmmm,  the following session causes me some concern:
>>> print a
$(which sh) ${HOME/b/k} 'the dog'
>>> print b
/bin/sh /home/kill the dog
>>> shlex.split(a)
['$(which', 'sh)', '${HOME/b/k}', 'the dog']
>>> shlex.split(b)
['/bin/sh', '/home/kill', 'the', 'dog']

I started with a, which contains the 3 cases that I'm worried about:
expanding $(), variable expansion, and a token containing white space.
b was generated using commands.getoutput('echo ' +a).  So b has most of
the right stuff, but it loses the parens and 'the dog' is split by
shlex.  But shlex breaks up $(which sh).  Is that correct behavior from
shlex?  It feels like shlex should return '$(which sh)' as a single
token.



From jrastrick at student.usyd.edu.au  Tue May 10 13:31:40 2005
From: jrastrick at student.usyd.edu.au (Jordan Rastrick)
Date: 10 May 2005 10:31:40 -0700
Subject: Merging overlapping spans/ranges
In-Reply-To: <4280b31b$0$198$edfadb0f@dread12.news.tele.dk>
References: <4280b31b$0$198$edfadb0f@dread12.news.tele.dk>
Message-ID: <1115746300.225637.171440@f14g2000cwb.googlegroups.com>


Max M wrote:
> I am writing a "find-free-time" function for a calendar. There are a
lot
> of time spans with start end times, some overlapping, some not.
>
> To find the free time spans, I first need to convert the events into
a
> list of non overlapping time spans "meta-spans".
>
> This nice ascii graph should show what I mean.
>
> 1) ---
> 2)     ---
> 3)   ---
> 4)          -----
> 5)             -----
>
>  >> -------  -------- # meta spans
>
> I can then iterate through the meta-spans and find non-busy times.
>
> I have written the class below, but it is rather O^2, so I wondered
if
> anybody has an idea for a better approach?
>
>
> ######################################
> # -*- coding: latin-1 -*-
>
> """
> 1) ---
> 2)     ---
> 3)   ---
> 4)          -----
> 5)             -----
>
>  >> -------  --------
> """
>
> class MetaSpans:
>
>      """
>      Populate with a list of span tuples [(start,end)], and it will
make
> "meta"
>      spans, with overlapping spans folded into one span.
>      """
>
>      def __init__(self):
>          self.spans = []
>
>      def add(self, span):
>          start, end = span
>          overlapping = [span]
>          non_overlapping = []
>          for spn in self.spans:
>              spn_start, spn_end = spn
>              # span rules for iterated spans
>              starts_before = spn_start <= start
>              ends_after = spn_end >= end
>              is_outside = starts_before and ends_after
>              starts_inside = start <= spn_start <= end
>              ends_inside =  start <= spn_end <= end
>              overlaps = starts_inside or ends_inside or is_outside
>              if overlaps:
>                  overlapping.append(spn)
>              else:
>                  non_overlapping.append(spn)
>          # overlapping spans are changed to one span
>          starts = []
>          ends = []
>          for start, end in overlapping:
>              starts.append(start)
>              ends.append(end)
>          min_start = min(starts)
>          max_end = max(ends)
>          non_overlapping.append( (min_start, max_end) )
>          self.spans = non_overlapping
>
>
>      def findFreeTime(self, duration):
>          self.spans.sort()
>
>
>
>
> if __name__ == '__main__':
>
>      ms = MetaSpans()
>      ms.add((0,3))
>      ms.add((4,7))
>      ms.add((2,5))
>      ms.add((9,14))
>      ms.add((12,17))
>      print ms.spans
>
>
>      from datetime import datetime
>      ms = MetaSpans()
>      ms.add((datetime(2005, 1, 1, 0, 0, 0), datetime(2005, 1, 1, 3,
0, 0)))
>      ms.add((datetime(2005, 1, 1, 4, 0, 0), datetime(2005, 1, 1, 7,
0, 0)))
>      ms.add((datetime(2005, 1, 1, 2, 0, 0), datetime(2005, 1, 1, 5,
0, 0)))
>      ms.add((datetime(2005, 1, 1, 9, 0, 0), datetime(2005, 1, 1, 14,
0, 0)))
>      ms.add((datetime(2005, 1, 1, 12, 0, 0), datetime(2005, 1, 1, 17,
0,
> 0)))
>      print ms.spans
>
>
>

I think the following code does what you want. It should be O(n log n)
- at least I hope thats what Python takes to sort the list of spans :)
Of course I've assumed you have the spans available to you all at once
as a list, and dont need to add them one at a time as you did in your
original code.

def get_metaspans(spans):
    """Given a list of span tuples [(start,end)], will generate all
    meta spans, with overlapping spans folded into one span.
    """
    spans.sort()
    spans = iter(spans)
    metaspan = spans.next()
    for span in spans:
        start, end = span
        m_start, m_end = metaspan
        if start > m_end:
            yield metaspan
            metaspan = span
        elif end > m_end:
            metaspan = (m_start, end)
    # Need to yield the final metaspan once the span list is exhausted
    yield metaspan

def get_breaks(metaspans):
    """Gets all the breaks in between a sequence of metaspans"""
    metaspans = iter(metaspans)
    _, prev_end = metaspans.next()
    for metaspan in metaspans:
        start, end = metaspan
        yield (prev_end, start)
        prev_end = end

I must admit I'm a bit of a generatoraholic, I'll tend to throw yields
at anything given half a chance :) Having to yield once more at the end
of the get_metaspans loop seems a little inelegant, maybe it could be
done a bit better. But its nice the way empty lists are handled
gracefully - the StopIteration thrown by the .next() calls are just
absorbed by the, uh, generatorness.

A little bit of testing:

>>> spans = [(12, 13), (0,3), (2,5), (1,4), (4,6), (1,2), (8,9), (9,
10)]
>>> print list(get_metaspans(spans))
[(0, 6), (8, 10), (12, 13)]
>>> print list(get_breaks(get_metaspans(spans)))
[(6, 8), (10, 12)]

Is that more or less what was required?



From rhall at thiess.com.au  Wed May 18 20:52:41 2005
From: rhall at thiess.com.au (Bloke)
Date: 18 May 2005 17:52:41 -0700
Subject: SSL (HTTPS) with 2.4
References: <1116392416.139727.84630@g49g2000cwa.googlegroups.com>
	<428AD4D1.8030405@v.loewis.de>
	<1116396878.995648.206820@g49g2000cwa.googlegroups.com>
	<1116406256.213128.68180@f14g2000cwb.googlegroups.com>
	<grGie.3984$uR4.2802@newsread2.news.atl.earthlink.net>
	<1116422715.320683.228810@g49g2000cwa.googlegroups.com>
	<1116424363.953180.79260@g47g2000cwa.googlegroups.com>
	<1116424660.917136.79680@g47g2000cwa.googlegroups.com>
	<428b7bc5$0$7346$9b622d9e@news.freenet.de>
Message-ID: <1116463961.944713.210860@g49g2000cwa.googlegroups.com>

Thanks Martin.

The problem seems to lie with our company proxy (which requires
authentication).  I have tried retrieving the page on another network
with a transparent proxy, and it all works fine.  Unfortnately, any
https page I try to retrieve on the company network fails in this way
with after a long period of inactivity.  However, I can retrieve the
page using a standard browser through the same company network.  I
think there must be something weird going on with our proxy server.



From arutz at mimoza.pantel.net  Sat May 28 09:37:47 2005
From: arutz at mimoza.pantel.net (Antal Rutz)
Date: Sat, 28 May 2005 15:37:47 +0200
Subject: Threading questions
Message-ID: <20050528133747.GA48654@mimoza.pantel.net>

Hi, All!

I'm new to threading. I have some design questions:
Task: I collect data and store them in an RDBMS (mysql or pgsql)

The question is how to do that with threading?
The data-collecting piece of the code runs in a thread.

1. Open the db, and each thread writes the result immediately.
   (Sub-question: which is better: cursor object passed to the thread
   or stored in a global var.)
2. Threads return data, which is written to DB after that.
3. Threads write to global variable, after 'join()' data is written.
   (Can be used global (write-only) variables with threads at all?)
4. ?...

I think variable locking isn't an issue here because they are write-only.

Maybe I have fundamentaly misunderstood something...

Thanks

-- 


--arutz



From http  Sat May 14 05:22:19 2005
From: http (Paul Rubin)
Date: 14 May 2005 02:22:19 -0700
Subject: sockets don't play nice with new style classes :(
Message-ID: <7xvf5mnovo.fsf@ruckus.brouhaha.com>

Just a slight rant, I think I can find a workaround.

I wanted to trace all the output being sent through a socket:

   from socket import *
   sock = socket()
   socket.connect((host, post))
   socket.send('hello over there\n')   # I want to log the string

Sounds like a job for new style classes:

   class wsocket(socket):
      def send(self, msg):
         print 'socket sending (%s)'% repr(msg)
         socket.send(msg)

   sock = wsocket()
   sock.connect(...)
   # other stuff same as before

However, my print statement never got run.

After much head scratching it turns out that the library socket class
really makes a wrapper for an internal _socket.socket object.  It goes
and manually sets the send and recv instance variables to the ones
from the _socket.socket, and does similar things for some other methods
and the doc strings.

It seems to me that the socket module itself should be rewritten to use
new style classes, so that socket.socket objects can extend _socket.socket
instead of wrapping them.

Am I missing something?


From vincent at visualtrans.de  Thu May  5 03:49:04 2005
From: vincent at visualtrans.de (vincent wehren)
Date: Thu, 5 May 2005 09:49:04 +0200
Subject: Looking for Example of wxFontEnumerator Use
References: <1115252138.517437.193470@g14g2000cwa.googlegroups.com>
Message-ID: <d5cj5g$m3d$1@news2.zwoll1.ov.home.nl>

"weston" <notsew-reversePreceedingAndRemoveThis at canncentral.org> schrieb im 
Newsbeitrag news:1115252138.517437.193470 at g14g2000cwa.googlegroups.com...
| Can anyone give an example of proper usage of wxFontEnumerator?


In the wxPython Demo: wxPython Overview > Miscellaneous > FontEnumerator

If you haven't downloaded the demo/docs yet, you should. You can get your 
version
from http://wxpython.org/download.php.


Regards,
--

Vincent Wehren


|
| Thanks,
|
|   Weston
| 




From rkern at ucsd.edu  Tue May 10 11:48:12 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Tue, 10 May 2005 08:48:12 -0700
Subject: Library Naming Conventions.
In-Reply-To: <1115739023.302545.109300@o13g2000cwo.googlegroups.com>
References: <1114851378.781754.194030@z14g2000cwz.googlegroups.com>	<1114860766.488589.152380@o13g2000cwo.googlegroups.com>
	<1115739023.302545.109300@o13g2000cwo.googlegroups.com>
Message-ID: <d5qkm0$aaq$1@sea.gmane.org>

chris.lyon at spritenote.co.uk wrote:
> quoting:
> 
>       Modules should have short, lowercase names, without underscores.
> 
> this still doesn't explain Cookie.

PEP-008 didn't exist since the beginning of Python's development. Cookie 
(I believe) predates PEP-008.

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From rbt at athop1.ath.vt.edu  Tue May 10 13:59:56 2005
From: rbt at athop1.ath.vt.edu (rbt)
Date: Tue, 10 May 2005 13:59:56 -0400
Subject: Python on Pocket PC (Strong Arm)
Message-ID: <d5qsqs$33k$1@solaris.cc.vt.edu>

I'm about to test this out on a new Dell hand held. Anyone had luck with it?

http://www.murkworks.com/Research/Python/PocketPCPython/Overview


From steven.bethard at gmail.com  Mon May 16 00:47:07 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Sun, 15 May 2005 22:47:07 -0600
Subject: Safe eval, or how to get list from string
In-Reply-To: <mailman.10.1116200123.8733.python-list@python.org>
References: <1115999726.286709.140690@f14g2000cwb.googlegroups.com>	<mailman.44.1116006195.29328.python-list@python.org>	<1116007844.564530.178880@g43g2000cwa.googlegroups.com>
	<mailman.10.1116200123.8733.python-list@python.org>
Message-ID: <wcudndfhvPtVuBXfRVn-sw@comcast.com>

Joseph Garvin wrote:
> bwooster47 at gmail.com wrote:
> 
>>It has something called "reval" looks that would fit my needs
>>perfectly.
>>
>>Details:
>>http://www.faqts.com/knowledge_base/view.phtml/aid/4550/fid/538
> 
> If I remember correctly reval and it's brothers were deemed insecure,
> are no longer developed, and are present only for sake of backwards
> compatibility. See the global module index entry on it.

I believe some of the old security holes have been patched.  See my 
recent post at:

http://mail.python.org/pipermail/python-list/2005-May/281032.html

My understanding though is that it's still not considered appropriate 
for production use.

STeVe


From rhall at thiess.com.au  Wed May 18 01:00:16 2005
From: rhall at thiess.com.au (Bloke)
Date: 17 May 2005 22:00:16 -0700
Subject: SSL (HTTPS) with 2.4
Message-ID: <1116392416.139727.84630@g49g2000cwa.googlegroups.com>

Hi all.

Some time ago (years) I had a script on Python 2.2 that would retieve a
HTTPS web site.  I used python22-win32-ssl.zip to handle the SSL aspect
and it worked wonderfully.  I am revisiting the project and need to
update it to Python 2.4.1.  python22-win32-ssl.zip isn't compatable
(duh) and I can't find a newer version.  I have had a search and can't
find anything to point me in the right direction.

Can someone please help?



From dbasch at yahoo.com  Fri May  6 16:45:27 2005
From: dbasch at yahoo.com (Derek Basch)
Date: 6 May 2005 13:45:27 -0700
Subject: Multiple Inheritence and data attributes
Message-ID: <1115412327.265796.71850@z14g2000cwz.googlegroups.com>

Hello Everyone,

Given:

class A:
    def __init__(self):
        super(A, self).__init__()
        self.dog = "fluffy"
    def changeDog(self):
        self.dog = "spike"

class B:
    def __init__(self):
        super(B, self).__init__()

class C(object, A, B):
    def __init__(self):
        super(C, self).__init__()
    def printDog(self, cls):
        print cls.dog

c = C()
c.printDog(c)

How can I access data attributes of superclasses? I can see the
function attributes of the superclasses:

['__class__', '__delattr__', '__dict__', '__doc__', '__getattribute__',
'__hash__', '__init__', '__module__', '__new__', '__reduce__',
'__reduce_ex__', '__repr__', '__setattr__', '__str__', '__weakref__',
'changeDog', 'printDog']

but not the data attributes. Shouldn't the derived class have that data
attributes of superclasses? I guess I am not understanding the python
implementation.

Thanks,
Derek



From lashkariNO at SPAMworldviz.com  Thu May 12 19:30:21 2005
From: lashkariNO at SPAMworldviz.com (Farshid Lashkari)
Date: Thu, 12 May 2005 23:30:21 GMT
Subject: How to find the classname of an object? (was Python Documentation)
In-Reply-To: <mailman.503.1115940149.29826.python-list@python.org>
References: <mailman.503.1115940149.29826.python-list@python.org>
Message-ID: <hGRge.14335$941.9700@trnddc08>

This will get the name of an objects class

obj.__class__.__name__

This will return a tuple of its base classes

obj.__class__.__bases__

Christopher J. Bottaro wrote:
> I actually want all the parent classes too.  So if D derives off C derives
> off B derives off A, I ultimately want a tuple ('D', 'C', 'B', 'A').
> 
> For those of you following the Python Documentation thread, this is a good
> example of how the PHP manual is "better".  I found how to do this in a few
> seconds in PHP.  I searched the Python docs for "class name", "classname",
> "introspection" and "getclass".  I looked in the Class section of the
> tutorial also and also the Programming FAQ.  The "related functions"
> section of the PHP manual is really helpful.  It would be cool if in the
> section for the built-in function isinstance() or issubclass() there is a
> section for "related functions" that would point me to getclassname(obj)
> (if it exists).
> 
> Thanks for the help.
> 
> -- C
> 


From f.geiger at vol.at  Tue May 17 15:17:13 2005
From: f.geiger at vol.at (F. GEIGER)
Date: Tue, 17 May 2005 21:17:13 +0200
Subject: pysqlite2.dbapi2.ProgrammingError: Incorrect number of bindings
	supplied. The current statement uses 0, and there are -1 supplied.
References: <d6dfi8$ck8$1@news.hispeed.ch>
Message-ID: <d6dfve$ct1$1@news.hispeed.ch>

Arrgh, sorry for that post!

      self._dbc.execute(q, data)

where data is None, works with MySQL. For SQLite I have to write

      if data is not None:
         self._dbc.execute(q, data)
      else:
         self._dbc.execute(q)

Sorry again,
Franz GEIGER



"F. GEIGER" <f.geiger at vol.at> schrieb im Newsbeitrag
news:d6dfi8$ck8$1 at news.hispeed.ch...
> Im on Python 2.3.4, using pysqlite 2.0.0 (final).
>
> When I try to execute
>
> self._dbc.execute(q, data)
>
> where q is 'select count(*) from Difflets ' and date is None
>
> I get the following exception:
>
> pysqlite2.dbapi2.ProgrammingError: Incorrect number of bindings supplied.
> The current statement uses 0, and there are -1 supplied.
>
> Any ideas?
>
> Many thanks in advance and kind regards
> Franz GEIGER
>
>
>




From simon.brunning at gmail.com  Tue May 31 12:37:48 2005
From: simon.brunning at gmail.com (Simon Brunning)
Date: Tue, 31 May 2005 17:37:48 +0100
Subject: The need to put "self" in every method
In-Reply-To: <1117554344.938440.54700@g14g2000cwa.googlegroups.com>
References: <1117554344.938440.54700@g14g2000cwa.googlegroups.com>
Message-ID: <8c7f10c605053109376b00a342@mail.gmail.com>

On 31 May 2005 08:45:45 -0700, Fernando M.
<fernandomirandamuro at gmail.com> wrote:
> i was just wondering about the need to put "self" as the first
> parameter in every method a class has because, if it's always needed,
> why the obligation to write it?

It doesn't need to be 'self'. You could use 'this', or 's', or whatever.

Of course, if you *don't* use 'self', you should expect an angly mob
with pitchforks and torches outside your castle.

-- 
Cheers,
Simon B,
simon at brunningonline.net,
http://www.brunningonline.net/simon/blog/


From bronger at physik.rwth-aachen.de  Sat May 21 02:39:26 2005
From: bronger at physik.rwth-aachen.de (Torsten Bronger)
Date: Sat, 21 May 2005 08:39:26 +0200
Subject: first release of PyPy
References: <mailman.264.1116625088.8733.python-list@python.org>
	<1116629407.638782.145950@g47g2000cwa.googlegroups.com>
	<1116644536.741250.249860@g44g2000cwa.googlegroups.com>
	<mailman.279.1116649250.8733.python-list@python.org>
	<1116653460.808204.74460@g43g2000cwa.googlegroups.com>
Message-ID: <87mzqpytep.fsf@wilson.rwth-aachen.de>

Hall?chen!

"Kay Schluehr" <kay.schluehr at gmx.net> writes:

> [...]
>
> [...] Once You get enough speed out of the PyPy-runtime and the
> community shifts to it the PEP-process degenerates in the view of
> a PyPythonista to discussions about aspects of the std-objectspace
> and language design patterns. There will be some CPython
> compliance - that's all.

Please could somebody explain to us non-CS people why PyPy could
have speed features CPython can't have?

Tsch?,
Torsten.

-- 
Torsten Bronger, aquisgrana, europa vetus


From cotyspend at yahoo.com  Tue May 31 19:13:42 2005
From: cotyspend at yahoo.com (nephish)
Date: 31 May 2005 16:13:42 -0700
Subject: cgi help
Message-ID: <1117581222.027646.25710@o13g2000cwo.googlegroups.com>

Hey there,
i am trying to write an online application using the cgi module.
what i want to do is have an html form display a drop-down list and
have the values of that list be the lines of text written in a file.
this would be updated almost every time the site is visited.
i have been sucessful in writing text to a file from an html form. but
i need to access this so it can be selected.
is there a way to do this? i have found limited info on how to really
use the cgi module.  so if there is more indepth tutorials or docs on
the use of this module, that may be helpful also.
what i mean is. i am willing to rtfm, if i can find one.
thanks,



From michele.simionato at gmail.com  Mon May  2 04:00:23 2005
From: michele.simionato at gmail.com (Michele Simionato)
Date: 2 May 2005 01:00:23 -0700
Subject: MRO problems with diamond inheritance?
In-Reply-To: <d53jqq$b88$1@newsg4.svr.pol.co.uk>
References: <d53jqq$b88$1@newsg4.svr.pol.co.uk>
Message-ID: <1115020823.716491.148730@o13g2000cwo.googlegroups.com>

John & Sarah:
> Incidentally, is it safe to have an mro() method in a class, > or is
this
> as reserved as the usual __reserved_words__? Does Python > use mro()
(as
> opposed to __mro__) internally or anything?

.mro() is a metamethod, it is a method of the metaclass, not of the
class. So you can override it without problems, and still access it as
type.mro(cls).

For more about metamethods see
http://www-128.ibm.com/developerworks/linux/library/l-pymeta2/index.html

                   Michele Simionato



From rbt at athop1.ath.vt.edu  Sat May 21 12:57:25 2005
From: rbt at athop1.ath.vt.edu (rbt)
Date: Sat, 21 May 2005 12:57:25 -0400
Subject: count files in a directory
In-Reply-To: <mailman.280.1116649508.8733.python-list@python.org>
References: <d6m5e1$cr7$1@solaris.cc.vt.edu>	<mailman.276.1116643081.8733.python-list@python.org>	<d6m8nc$i4v$2@solaris.cc.vt.edu>
	<mailman.280.1116649508.8733.python-list@python.org>
Message-ID: <d6np9m$9ma$1@solaris.cc.vt.edu>

James Stroud wrote:
> Sorry, I've never used os.walk and didn't realize that it is a generator.
> 
> This will work for your purposes (and seems pretty fast compared to the 
> alternative):
> 
> file_count = len(os.walk(valid_path).next()[2])

Thanks James... this works *really* well for times when I only need to count files in 
the current directory (no recursion). I think others will find it useful as well.


From martin at v.loewis.de  Mon May 30 03:46:14 2005
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Mon, 30 May 2005 09:46:14 +0200
Subject: write html-headers (utf-8)
In-Reply-To: <pan.2005.05.30.07.11.54.252974@localhost.localdomain>
References: <pan.2005.05.30.07.11.54.252974@localhost.localdomain>
Message-ID: <429ac4c7$0$23705$9b622d9e@news.freenet.de>

db wrote:
> In this template I write a few Mysql variables. 
> Those variable often have german characters. This characters (G??sing in
> stead of G?sing). The german characters in the html template are shown
> correctly.

The problem is then with these variables: apparently, the Mysql
variables are encoded in iso-8859-15, and you need to recode them
to UTF-8 first before putting them into the template.

var = var.decode("iso-8859-15").encode("utf-8")

> As you can see, I put in the header of the html template that the encoding
> is UTF-8, the browser still shows windows ISO-8859-15. Can I write the
> header with python so the browser uses the utf-8 encoding?

The problem is not the header, but the body. The browser sees your claim
that the page is UTF-8, but doesn't believe it. This is because it tries
to interpret the page as UTF-8, and then finds invalid byte sequences
(your latin-9 characters), and then knows that the page *can't* be
UTF-8. It then guesses that the page must be latin-something. That guess
is wrong, of course, also, because some characters in the page are
utf-8, and others latin-9. This is invalid HTML.

Regards,
Martin



From fredrik at pythonware.com  Tue May 24 10:40:16 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 24 May 2005 16:40:16 +0200
Subject: \l operation in regular expressions
References: <loom.20050524T151323-267@post.gmane.org>
Message-ID: <d6ve9a$1ba$1@sea.gmane.org>

"Kalle Anka" <skromta at gmail.com> wrote:

> I've started to play around with regexps in Python and I tried
> something like this
>
> print re.sub( r'(\bw\w+\b)', r'\u\1', 'will it work')
>
> and get
>
> \uwill it \uwork
>
> when I had expected
>
> Will it Work
>
> I tried to find some documentation about this but I can't find anything
> that says if operations like \l \L \u \U etc are supported or not.

they're not mentioned in the RE syntax chapter, and they don't work, so "not
supported" is probably the right answer.

> It doesn't look like it supported? What is the "Python way" of doing this,
> writing a function and use that as the replacement?

    def fixup(m):
        return m.group().capitalize()
    s = re.sub( r'(\bw\w+\b)', fixup, 'will it work')

or, if you insist on writing one-liners:

    s = re.sub( r'(\bw\w+\b)', lambda m: m.group().capitalize(), 'will it work')

</F> 





From jerf at jerf.org  Sun May  8 11:55:32 2005
From: jerf at jerf.org (Jeremy Bowers)
Date: Sun, 08 May 2005 11:55:32 -0400
Subject: Q: The `print' statement over Unicode
References: <mailman.6.1115221576.29826.python-list@python.org>
	<acnbm18i.fsf@python.net>
	<mailman.135.1115467276.29826.python-list@python.org>
	<427cc8b2$0$26179$9b622d9e@news.freenet.de>
	<mailman.146.1115482306.29826.python-list@python.org>
	<pan.2005.05.07.15.14.07.969179@jerf.org>
	<87r7ghg79t.fsf@pobox.com>
Message-ID: <pan.2005.05.08.15.55.32.165852@jerf.org>

On Sun, 08 May 2005 13:46:22 +0000, John J. Lee wrote:
> I don't mean to put words into Fran?ois' mouth, but IIRC he managed,
> for example, GNU tar for some time and, while using some kind of
> tracking system "under the covers", didn't impose it on his users.
> 
> IMVHO, that was very nice of him, but I'd be reluctant to attempt to
> enforce this way of working on a hard-working and competent
> contributor to an open source project to which I'm not a core
> contributor myself.

Then I'd honor his consistency of belief, but still consider it impolite
in general, as asking someone to do tons of work overall to save you a bit
is almost always impolite.


From littlejohn.75 at news.free.fr  Mon May  9 06:15:55 2005
From: littlejohn.75 at news.free.fr (F. Petitjean)
Date: 09 May 2005 10:15:55 GMT
Subject: Trouble saving unicode text to file
References: <1115500976.571232.76100@z14g2000cwz.googlegroups.com>
	<427DDAA5.9020606@v.loewis.de>
	<t4qr71h88us709h4es4oa4fbamnkgkj0sj@4ax.com>
	<427E5136.4000300@v.loewis.de>
	<gq0t7194aiuock5t67gqvudokla2lr7hbp@4ax.com>
Message-ID: <427f385b$0$284$636a15ce@news.free.fr>

Le Mon, 09 May 2005 08:39:40 +1000, John Machin a ?crit :
> On Sun, 08 May 2005 19:49:42 +0200, "Martin v. L?wis"
><martin at v.loewis.de> wrote:
> 
>>John Machin wrote:
>>> Martin, I can't guess the reason for this last suggestion; why should
>>> a Windows system use iso-8859-1 instead of cp1252?
>>
>>Windows users often think that windows-1252 is the same thing as
>>iso-8859-1, and then exchange data in windows-1252, but declare them
>>as iso-8859-1 (in particular, this is common for HTML files).
>>iso-8859-1 is more portable than windows-1252, so it should be
>>preferred when the data need to be exchanged across systems.
> 
> 1. When exchanging data across systems, should not utf-8 be
> preferred???
> 
> 2. If the Windows *users* have been using characters that are in
> cp1252 but not in iso-8859-1, then attempting to convert to iso-8859-1
> will cause an exception. 
> 
>>>> euro_win = chr(128)
>>>> euro_uc = euro_win.decode('cp1252')
>>>> euro_uc
> u'\u20ac'
>>>> unicodedata.name(euro_uc)
> 'EURO SIGN'
>>>> euro_iso = euro_uc.encode('iso-8859-1')
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
> UnicodeEncodeError: 'latin-1' codec can't encode character u'\u20ac'
> in position 0: ordinal not in range(256)
>>>>
> 
> I find it a bit hard to imagine that the euro sign wouldn't get a fair
> bit of usage in Swedish data processing even if it's not their own
> currency.
For western Europe countries, another codec exists which includes the
'EURO SIGN'. It is spelled 'iso8859_15' (with an alias 'iso-8859-15'
according to the 4.9.2 Standard Encodings page of the python library
reference).
euro_iso = euro_uc.encode('iso8859_15')
>>> euro_iso
'\xa4'
> 
> 3. How portable is a character set that doesn't include the euro sign?
I think it is due to historical constraints : isoLatin1 existed before
that the EURO SIGN appeared.
> 
> Regards,
> John


From timothy at open-networks.net  Sun May  8 21:51:44 2005
From: timothy at open-networks.net (Timothy Smith)
Date: Mon, 09 May 2005 11:51:44 +1000
Subject: computer unable to load _pysvn.pyc
Message-ID: <427EC230.1060300@open-networks.net>

this is truely maddening

Traceback (most recent call last):
  File "PubWare.py", line 11, in ?
  File "Main.pyc", line 46, in ?
  File "pysvn\__init__.pyc", line 12, in ?
  File "pysvn\_pysvn.pyc", line 9, in ?
  File "pysvn\_pysvn.pyc", line 7, in __load
ImportError: DLL load failed: A device attached to the system is not 
functioning.

any ideas? it works perfectly on another computer


From flupke at nonexistingdomain.com  Sun May 22 20:32:01 2005
From: flupke at nonexistingdomain.com (flupke)
Date: Mon, 23 May 2005 00:32:01 GMT
Subject: firebird and unicode
In-Reply-To: <2u5ke.98532$384.5621810@phobos.telenet-ops.be>
References: <2u5ke.98532$384.5621810@phobos.telenet-ops.be>
Message-ID: <5w9ke.98690$Ir4.5630011@phobos.telenet-ops.be>

flupke wrote:
> Hi,
> 
> i'm developing an app that uses wxPython and Firebird via kinterbasdb on 
> Win XP SP2. On insert of a record i get this error:
> (kinterbasdb.InterfaceError)
> (0, "Type mismatch: Input parameter for field named [name n
> ot known at this stage of query execution] must be a string, rather than 
> a <type 'unicode'>.")
> 
> Python, wxPython are all unicode enabled. The firebird database is 
> created with the UNICODE_FSS charset and opened as such in kinterbasdb's 
> connect function (charset=UNICODE). The GUI's charset is made with 
> wxGlade and there i specified UTF-8 for the encoding.
> 
> I'm out of ideas as to why i get this error message.
> 
> Any ideas?
> 
> Thanks
> Benedict

If looked around a bit and it seems i have to do a 
kinterbasdb.init(type_conv=100). But this gives another error:

File "C:\Python24\lib\site-packages\kinterbasdb\__init__.py", line 343, 
in init
     fakeFunc.func_code = realFunc.func_code
ValueError: Date() requires a code object with 0 free vars, not 1

I installd the mx Data time module and the fixedpoint module but that 
doesn't help. I still get the same error.
Does anybody know what's wrong?

Thanks,
Benedict


From gijs at globaltrack.com  Mon May 23 09:50:05 2005
From: gijs at globaltrack.com (Gijs Korremans)
Date: Mon, 23 May 2005 15:50:05 +0200
Subject: Com object questions
Message-ID: <200505231354.j4NDshkF030579@rrba-146-112-247.telkomadsl.co.za>



> Does IPADDRESSSTRUCT appear anywhere in the makepy-generated module ?
Specifically, there should be a RecordMap dict containing any defined 
Records
and their GUID's.

No it's not in the genereted module, but it is in the COM Browser so I'm sure the struct is in the com object
Maybe I can find out somewhere what the GUID's is and put it in the RecodMap manually?

       Roger

"Gijs Korremans" <gijs at globaltrack.com> wrote in message 
news:mailman.13.1116843178.18027.python-list at python.org...
Hi,

I'm still figuring out how I can use the win32com for the use of a com 
object which I think is made in VB

First I've created a file with MakePy
Then I used the following code to init the com object:
import win32com.client
Client = win32com.client.Dispatch("ClientModule.Client")

Then, when I want to use a function, for example this one:
ipaddr = kddClient.GetLocalIPAddress()
I get this error:
File 
"C:\Python23\lib\site-packages\win32com\gen_py\0F4570B8-4D39-47CD-84B4-8A424233EEBFx0x1x0.py", 
line 69, in GetLocalIPAddress
  return self._ApplyTypes_(11, 1, (36, 0), (), 'GetLocalIPAddress', None,)
File "C:\Python23\lib\site-packages\win32com\client\__init__.py", line 446, 
in _ApplyTypes_
  return self._get_good_object_(self._oleobj_.InvokeTypes(dispid, 0, 
wFlags, retType, argTypes, *args),user, resultCLSID)
com_error: (-2147024809, 'The parameter is incorrect.', None, None)
I don't know which parameter is incorrect because the function doesn't need 
any parameters

and when I try to use a struct for the IP address using the following code:
ipaddr = win32com.client.Record("IPADDRESS_STRUCT", Client)
I get this message:
File "C:\Python23\lib\site-packages\win32com\client\__init__.py", line 403, 
in Record
  raise ValueError, "The structure '%s' is not defined in module '%s'" % 
(name, package)
ValueError: The structure 'IPADDRESS_STRUCT' is not defined in module 
'<module 'win32com.gen_py.0F4570B8-4D39-47CD-84B4-8A424233EEBFx0x1x0' from 
'C:\Python23\lib\site-packages\win32com\gen_py\0F4570B8-4D39-47CD-84B4-8A424233EEBFx0x1x0.pyc'>'
I think this means that there is no struct IPADDRESS_STRUCT defined in the 
com object but when I'm going to the ComBrowser in PythonWin it is in there.

I'm using python 2.3 with pywin32 build 203

Does anybody know what i'm doing wrong?

Kind regards,


Gijs <



Kind regards, 


Gijs 

--
This message has been scanned for viruses and
dangerous content by Network Sentry, and is
believed to be clean.
http://www.networksentry.co.za



From steven.bethard at gmail.com  Fri May 13 13:32:15 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Fri, 13 May 2005 11:32:15 -0600
Subject: How to find the classname of an object? (was Python Documentation)
In-Reply-To: <mailman.30.1115995062.29328.python-list@python.org>
References: <mailman.503.1115940149.29826.python-list@python.org>	<hGRge.14335$941.9700@trnddc08>
	<4283fda8.18221170@news.oz.net>
	<mailman.30.1115995062.29328.python-list@python.org>
Message-ID: <jMCdnQ9AK68DeRnfRVn-uQ@comcast.com>

Christopher J. Bottaro wrote:
> Bengt Richter wrote:
> 
> 
>> >>> type(obj)
>> <class '__main__.A'>
>> >>> type(obj).mro()
>> [<class '__main__.A'>, <class '__main__.B1'>, <class '__main__.B2'>,
>> [<class '__main__.C'>, <type 'object'>]
>> >>> tuple(x.__name__ for x in type(obj).mro())
>> ('A', 'B1', 'B2', 'C', 'object')
> 
> Wow awesome, thats exactly what I was looking for.  I hate to bring up the
> documentation thing again...but.....where the hell is this in the
> documentation?

py> help(type)
Help on class type in module __builtin__:

class type(object)
  |  type(object) -> the object's type
  |  type(name, bases, dict) -> a new type
...
  |  mro(...)
  |      mro() -> list
  |      return a type's method resolution order
...

Or even:

py> help(type.mro)
Help on method_descriptor:

mro(...)
     mro() -> list
     return a type's method resolution order

But yeah, I couldn't find it in the docs either.  Please file a 
documentation feature request:

http://sourceforge.net/tracker/?group_id=5470&atid=355470

STeVe


From bokr at oz.net  Wed May  4 19:34:10 2005
From: bokr at oz.net (Bengt Richter)
Date: Wed, 04 May 2005 23:34:10 GMT
Subject: annonymous functions -- how to
References: <1115239458.776800.240080@g14g2000cwa.googlegroups.com>
	<d5bdip$bpp$05$2@news.t-online.com>
Message-ID: <42795acb.685370470@news.oz.net>

On Wed, 04 May 2005 23:08:16 +0200, Peter Otten <__peter__ at web.de> wrote:

>Mayer wrote:
>
>> I would like to define a very large annonymous function, one with
>> several statements in sequence. I know how to define annonymous
>> functions, but I don't know how to define a sequence of statements in
>> their body. Can this be done in Python? If so, how?
>
>No, it can't. Why do you prefer your function to be anonymous?
>
Depends on what you mean by "anonymous" ;-)

 >>> def foo():
 ...    print 'statement 1'
 ...    print 'statement 2'
 ...    print 'statement etc'
 ...
 >>> foo.__name__ = '' # make really anonymous
 >>> fooholder = [foo]
 >>> del foo # forget name binding too
 >>> dir()
 ['__builtins__', '__doc__', '__name__', 'fooholder']
 >>> fooholder.append(lambda: 'not that anonymous ;-)')
 >>> fooholder
 [<function  at 0x02EE8D84>, <function <lambda> at 0x02EE8D14>]
 >>> [f.__name__ for f in fooholder]
 ['', '<lambda>']
 >>> fooholder[0](), fooholder[1]()
 statement 1
 statement 2
 statement etc
 (None, 'not that anonymous ;-)')

Regards,
Bengt Richter


From richie at entrian.com  Tue May 10 04:40:39 2005
From: richie at entrian.com (Richie Hindle)
Date: Tue, 10 May 2005 09:40:39 +0100
Subject: Strip white spaces from source
In-Reply-To: <1115664921.611530.85510@f14g2000cwb.googlegroups.com>
References: <1115590492.587606.108810@z14g2000cwz.googlegroups.com>
	<mailman.195.1115635650.29826.python-list@python.org>
	<1115664921.611530.85510@f14g2000cwb.googlegroups.com>
Message-ID: <bls081pn8gpb0ga1o5bqq85sce10f1ouot@4ax.com>


[qwweeeit]
> If someone is interested (I think nobody...) I can give my solution.

I'd be interested to see it, certainly.

It's always a good idea to post your solution, if only for future reference.
It's frustrating to do a Google Groups search for a problem and find that
someone else has solved it but without saying *how*.

-- 
Richie Hindle
richie at entrian.com



From steven.bethard at gmail.com  Wed May 11 20:12:14 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Wed, 11 May 2005 18:12:14 -0600
Subject: Python Documentation (should be better?)
In-Reply-To: <mailman.411.1115854727.29826.python-list@python.org>
References: <5C99C308457E6D4EA5448EA52A66004A675A6E@or.mxim.com>	<17026.26789.592527.975821@montanaro.dyndns.org>	<mailman.398.1115843305.29826.python-list@python.org>	<428276e8$0$318$626a14ce@news.free.fr>
	<mailman.411.1115854727.29826.python-list@python.org>
Message-ID: <lvudnZwSQdrDAh_fRVn-sQ@comcast.com>

Ivan Van Laningham wrote:
> I should be able to type "string methods" into the text box,
> push submit, and IT SHOULD HAND ME THE PAGE.  Not "Results 1 - 20 of
> about 9,800 from www.python.org for string methods. (0.78 seconds)"

Hmm...  I typed in "string methods" at http://docs.python.org/ and got:

"""Results 1 - 10 of about 11 from docs.python.org for "string methods". 
(0.06 seconds)"""

Without quoting, I got:

"""Results 1 - 10 of about 216 from docs.python.org for string methods. 
(0.05 seconds)"""

In both cases, the right link was the first one.  So I can't produce 
your results.

Regardless, assuming the right link is the first one, do I understand 
your complaint correctly as saying that you want Python to automatically 
pick the first link for you?  Do others agree with this complaint?  I 
imagine it wouldn't be that hard to add the equivalent of Google's "I'm 
Feeling Lucky" button beside the submit button if that would really help.

> And the first hit is from Python 2.1.3, NOT the current doc.

Weird.  I typed in "string methods" at http://docs.python.org/ and my 
first hit was from the current Python docs.  I get:

http://docs.python.org/lib/string-methods.html

In fact, I tried just "string" and couldn't find anything but the 
current docs in the first 10 pages (and was too lazy to check anything 
else).

Could you tell me how to reproduce your results (of getting Python 2.1.3)?

STeVe


From jstroud at mbi.ucla.edu  Thu May  5 17:32:31 2005
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Thu, 5 May 2005 14:32:31 -0700
Subject: dictionary comparison
In-Reply-To: <427a7d55.759748160@news.oz.net>
References: <1115306371.818120.150340@f14g2000cwb.googlegroups.com>
	<mailman.51.1115314647.29826.python-list@python.org>
	<427a7d55.759748160@news.oz.net>
Message-ID: <200505051432.31575.jstroud@mbi.ucla.edu>

On Thursday 05 May 2005 01:18 pm, so sayeth Bengt Richter:
> On Thu, 5 May 2005 10:37:23 -0700, James Stroud <jstroud at mbi.ucla.edu>
> wrote: [...]
> We had the same impulse ;-)
> (see my other post in this thread)
>
> ># use patch as value and version as key
>
> ??? seems the other way around (as it should be?)

Sorry, typo in the comment.

>
> >recc_dct = dict([x.split("-") for x in recc_ary])
> >serv_dct = dict([x.split("-") for x in serv_ary])
>
> But what about multiple revs for the same patch?

My Bad...

serv_dct = dict([(a,max([z for y,z in [f.split("-") for f in serv_ary] if a==y]))
                 for a,b in [g.split("-") for g in serv_ary]])

;o)

James

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From wollie at tzi.de  Wed May  4 14:56:14 2005
From: wollie at tzi.de (Wolfgang Kohnen)
Date: Wed, 04 May 2005 20:56:14 +0200
Subject: imaplib: setquota and proxyauth errors
Message-ID: <d5b5sc$osm$1@kohl.informatik.uni-bremen.de>

Hello out there!

I am new to python and so far I like it a lot.  Now I want to create 
some IMAP mailboxes on my cyrus imapd, with quotas and each user should 
be subscribed to her/his own spam folder.  This is what I've attempted:

> >>> import imaplib, getpass
> >>> cyrus = imaplib.IMAP4()
> >>> cyrus.login("cyrus", getpass.getpass())
> Password:
> ('OK', ['User logged in'])
> >>> cyrus.create("user/test0")
> ('OK', ['Completed'])
> >>> cyrus.setquota("user/test0", 123456)
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
>   File "/usr/lib/python2.3/imaplib.py", line 633, in setquota
>     typ, dat = self._simple_command('SETQUOTA', root, limits)
>   File "/usr/lib/python2.3/imaplib.py", line 1000, in _simple_command
>     return self._command_complete(name, self._command(name, *args))
>   File "/usr/lib/python2.3/imaplib.py", line 837, in _command_complete
>     raise self.error('%s command error: %s %s' % (name, typ, data))
> imaplib.error: SETQUOTA command error: BAD ['Invalid quota list in 
> Setquota']


What am I doing wrong here?  And here the subscribe thing:  I tried the 
proxyauth() method, 'cause I don't want cyrus to subscribe to test0's 
spam box but test0 himself.  Maybe I've completely misunderstood this 
method, no?

> >>> cyrus.create("user/test0/spam")
> ('OK', ['Completed'])
> >>> cyrus.proxyauth("test0")
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
>   File "/usr/lib/python2.3/imaplib.py", line 564, in proxyauth
>     return self._simple_command('PROXYAUTH', user)
>   File "/usr/lib/python2.3/imaplib.py", line 1000, in _simple_command
>     return self._command_complete(name, self._command(name, *args))
>   File "/usr/lib/python2.3/imaplib.py", line 837, in _command_complete
>     raise self.error('%s command error: %s %s' % (name, typ, data))
> imaplib.error: PROXYAUTH command error: BAD ['Unrecognized command']



I am lost. I can't even tell, if these error come from cyrus or from python.

TIA,
Wollie


From rkern at ucsd.edu  Tue May  3 07:10:12 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Tue, 03 May 2005 04:10:12 -0700
Subject: odeint function in SciPy
In-Reply-To: <1115116290.650118.252460@o13g2000cwo.googlegroups.com>
References: <1114630203.755082.285020@l41g2000cwc.googlegroups.com>	<mailman.2597.1114631083.1799.python-list@python.org>	<2617fd5d.0505021009.3e6ddb21@posting.google.com>	<mailman.45.1115062535.6583.python-list@python.org>
	<1115116290.650118.252460@o13g2000cwo.googlegroups.com>
Message-ID: <d57lr4$6no$1@sea.gmane.org>

FLChamp wrote:
> Thanks for your help! I don't suppose you happen to know what order
> this method is?

If your answer isn't in the docs I pointed you to or in the source, then 
I don't know it. Happy hunting.

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From querypk at gmail.com  Wed May  4 22:26:32 2005
From: querypk at gmail.com (querypk at gmail.com)
Date: 4 May 2005 19:26:32 -0700
Subject: min max of a list
In-Reply-To: <gaCdnf8Pf9xj7-TfRVn-tQ@comcast.com>
References: <1115245476.036508.273930@g14g2000cwa.googlegroups.com>
	<gaCdnf8Pf9xj7-TfRVn-tQ@comcast.com>
Message-ID: <1115259992.558123.189580@g14g2000cwa.googlegroups.com>

Thanks for that. My version of python does'nt find "groupby". I am
using python 2.3.2. Is there a way I could do it with out using groupby



From tjreedy at udel.edu  Tue May 10 13:04:16 2005
From: tjreedy at udel.edu (Terry Reedy)
Date: Tue, 10 May 2005 13:04:16 -0400
Subject: pyvm -- faster python
References: <mailman.164.1115548611.29826.python-list@python.org><1115561483.741761.212140@f14g2000cwb.googlegroups.com><1115573660.381851.297130@g14g2000cwa.googlegroups.com>
	<42807E31.8020905@ceid.upatras.gr>
Message-ID: <d5qp4g$t8g$1@sea.gmane.org>


"Stelios Xanthakis" <sxanth at ceid.upatras.gr> wrote in message 
news:42807E31.8020905 at ceid.upatras.gr...
>> Maybe you can explain us why it is so fast, and/or maybe you can work
>> with the other developers to improve the speed of the normal CPython,
>> this can require equal or less work for you, and it can produce more
>> long-lasting results/consequences for your work.
>>
>
> The reason is that it's built from the scratch.
> Guido would disagree with that, see py-dev thread:

Guido, like me, believes in being correct before being fast.

> http://www.mail-archive.com/python-dev at python.org/msg01225.html
>
>
> There *are* alternative ways to do some things in the vm and Joel
> is simply wrong:)

The smiley doesn't negate your silliness.  Joel explicitly talked about 
complex, mature, debugged, in-use systems, with actual or potential 
competitive replacements, not laboratory development toys and prototypes. 
Three years between releases *is* a long time.  And the Python codebase 
*does* embody a lot of hard-won knowledge, hardly available elsewhere, that 
should not be tossed.  A particular example is how to get certain things to 
work across numerous platforms in the face of ambuiguity and 'not defined' 
behavior in the C standard and implementations.

Its possible that some future reference Python will be based on a new, 
built-from-scratch core developed *in parallel* with current Python.  But 
that will only happen after it has been tested on a hundred different 
platforms with a hundred different applications and packages (as happens, 
more or less, with each new CPython release).

Terry J. Reedy





From simon.brunning at gmail.com  Wed May  4 10:17:24 2005
From: simon.brunning at gmail.com (Simon Brunning)
Date: Wed, 4 May 2005 15:17:24 +0100
Subject: Variable option count
In-Reply-To: <d5al3t$4q6$02$1@news.t-online.com>
References: <d5al3t$4q6$02$1@news.t-online.com>
Message-ID: <8c7f10c60505040717214e4d78@mail.gmail.com>

On 5/4/05, Florian Lindner <Florian.Lindner at xgm.de> wrote:
> Hello,
> how can I give an arbitrary number of options in a automated way to a
> function?
> 
> Example.
> 
> I've the list A =
> 
> [1, 2, 3]
> 
> Now I want to give this list to a function so that it is the same for
> function like:
> 
> f(1, 2, 3)
> 
> How can I do that?

f(*A)

-- 
Cheers,
Simon B,
simon at brunningonline.net,
http://www.brunningonline.net/simon/blog/


From kay.schluehr at gmx.net  Sat May 21 01:31:00 2005
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: 20 May 2005 22:31:00 -0700
Subject: first release of PyPy
In-Reply-To: <mailman.279.1116649250.8733.python-list@python.org>
References: <mailman.264.1116625088.8733.python-list@python.org>
	<1116629407.638782.145950@g47g2000cwa.googlegroups.com>
	<1116644536.741250.249860@g44g2000cwa.googlegroups.com>
	<mailman.279.1116649250.8733.python-list@python.org>
Message-ID: <1116653460.808204.74460@g43g2000cwa.googlegroups.com>


Christian Tismer wrote:
> beliavsky at aol.com wrote:
>
> > Kay Schluehr wrote:
> >
> >>holger krekel wrote:
> >>
> >>>Welcome to PyPy 0.6
> >>>--------------------
> >>>
> >>>*The PyPy Development Team is happy to announce the first
> >>>public release of PyPy after two years of spare-time and
> >>>half a year of EU funded development.  The 0.6 release
> >>>is eminently a preview release.*
> >>
> >>Congratulation to You and Your team!
> >>
> >>PyPy is really awesome and if it succeeds in speed demands after
the
> >>translation phase I believe that the project will shift the power
> >>within the Python community on the long run.
> >
> >
> > Could you please explain this statement? Who will gain power, and
who
> > will lose it?
>
> The Python community will gain power, and nobody will loose some.
> The big win is that we gain a new flexibility that did not
> exist before, even if PyPy should completely miss its speed
> promises. Having an extremely flexible implementation in a
> very high-level language (which happens to be Python) enables
> possibilities which have not been seen, before.

But not only flexibility IN the current language but also beyond it.
It's not anymore clear what the language as a set of well-defined
syntactical and semantical rules really is if You can change the
semantics in an arbitrary module representing an object-space. I
currently don't know how modular the parser is but adding syntax-rules
should not be that hard either. Once You get enough speed out of the
PyPy-runtime and the community shifts to it the PEP-process degenerates
in the view of a PyPythonista to discussions about aspects of the
std-objectspace and language design patterns. There will be some
CPython compliance - that's all.

Empowering the community means beheading the BDFL and that's currently
not only a person but a principle. Well, maybe that's o.k. but at least
inevitable and Guido finally finds the time to clip roses, writes his
memoirs, educates children and polishs his medals of honour.

Regards,
Kay



From mwm at idiom.com  Mon May 23 10:39:35 2005
From: mwm at idiom.com (Mike Meyer)
Date: 23 May 2005 07:39:35 -0700
Subject: What are OOP's Jargons and Complexities?
References: <1116843784.627059.146910@g47g2000cwa.googlegroups.com>
Message-ID: <5jacmmj9aw.fsf@idiom.com>

"Xah Lee" <xah at xahlee.org> writes:

So now we find out that Xah Lee is as ignorant of other programming
languages as he is of Python and Perl.

> In advanced languages such as LISP family, it is not uncommon to define
> functions inside a function. For example:
> subroutine f (x1, x2, ...) {
>   variables...
>   subroutine f1 (x1...) {...}
>   subroutine f2 (x1...) {...}
> }

Nested subroutines date back to Algol, which was first specified in
the 50s.

> So now, a_surface is no longer viewed as a subroutine, but a boxed set
> of things centered around a piece of data. All functions that work on
> the data are included in the boxed set. This paradigm possible in
> functional languages has refined so much so that it spread to other
> groups and became known as Object Oriented Programing, and complete
> languages with new syntax catered to such scheme emerged.

Actually, classes and other OO concepts come out of simulation programming,
not as an outgrowth of nested functions. Most of the features one
associates with OO languages were present in Simula.

Function nesting and classes were viewed as independent features. Some 
OO languages support nesting, others don't. I think it was Grace Murray
Hopper commenting on Ada who said that "With classes, nesting is for the
birds."

> This style of programing and language have become so fanatical that in
> such dedicated languages like Java, everything in the language are
> ?Classes?.

Strictly speaking, this isn't true of *any* language. Even the most
fanatical of languages distinguish between classes, objects and
methods.

But IIRC, Java comes with a set of low-level types that don't have
classes associated with them.

> This Object Oriented Programing style and dedicated languages (such as
> C++, Java)

This is pretty sloppy english. You imply that C++, like Java, is pure OO
language - meaning that there are no freestanding functions or variables.
That's false.

> have become a fad like wild fire among the programing mass
> of ignoramuses in the industry. Partly because of the data-centric new
> perspective, partly because the novelty and mysticism of new syntax and
> jargonization.

Actually, C++ became popular because it promised access to the power of
OO programming while leveraging the programmers familiarity with C. In
reality, it combined the worst features of both. Java became popular
because it fixed some of the problems with C++ while leveraging
programmers familiarity with C++ and promising "run anywhere" capability.

Personally, I think that these two languages are good examples of
someones ability to design a popular language being much better than
their ability to design a good language. But that's a matter of opinion,
and as such is debatable.

> It is especially hyped by the opportunist Sun Microsystems with the
> inception of Java, internet, and web applications booms around 1995. At
> those times, OOP (and Java) were thought to revolutionize the industry
> and solve all software engineering problems, in particular by certain
> "reuse of components" concept that was thought to come with OOP.

At that time, OOP was pushing 30 years old. Some people were using it
and getting that component reuse that it promised. Others were using
it and discovering that designing reusable classes is *hard*. It was
clear to pretty much everyone that OOP wasn't a silver bullet.

> We now know that the jargon Class is originally and effectively just a
> boxed set of data and subroutines, all defined inside a subroutine. And
> the jargon "Object" is just a variable that has been set to this super
> subroutine. And the inner subroutines are what's called Methods.

This is simply ludicruously wrong.

> to be continued tomorrow.

Please don't waste our time.

        <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From lsumnler at gmail.com  Thu May 19 09:53:10 2005
From: lsumnler at gmail.com (len)
Date: 19 May 2005 06:53:10 -0700
Subject: newbie file/DB processing
In-Reply-To: <86psvn3cc8.fsf@guru.mired.org>
References: <1116445969.381550.99280@f14g2000cwb.googlegroups.com>
	<86psvn3cc8.fsf@guru.mired.org>
Message-ID: <1116510790.380238.78880@z14g2000cwz.googlegroups.com>

Thanks for the reply.

I just read your response and will be taking your suggestion immediatly

Len Sumnler



From wuwei23 at gmail.com  Fri May 27 00:39:21 2005
From: wuwei23 at gmail.com (alex23)
Date: 26 May 2005 21:39:21 -0700
Subject: What are OOP's Jargons and Complexities?
In-Reply-To: <roy-D0C1B4.22134026052005@reader1.panix.com>
References: <1116843761.619249.144790@g47g2000cwa.googlegroups.com>
	<bAske.14563$yx.14338@fe08.lga> <3584469.Aerji1NdQr@yahoo.com>
	<3cWdnbtAM6aZ6g_fRVn-2w@rcn.net>
	<878y24yhst.fsf@ivanova.rotty.yi.org>
	<3fh93fF7set5U1@news.dfncis.de> <9tKdnT-wKq24Uw7fRVn-pA@rcn.net>
	<7vWke.2017$W51.14781@typhoon.sonic.net>
	<1117158478.701216.130110@f14g2000cwb.googlegroups.com>
	<roy-D0C1B4.22134026052005@reader1.panix.com>
Message-ID: <1117168761.432642.117270@f14g2000cwb.googlegroups.com>

Joe: So I gave my girlfriend some flowers.
Dave: What, like tulips?
John: No, no, he gave her roses.
Mike: Were they red roses?
Xah: You MORONS, they were JUST _flowers_! Enough with the mother
fucking jargon already!!

The moral of the story being that when you're not active in a specific
domain, the intricacies of it can easily look irrelevant to you.

-alex23



From dale.hagglund at gmail.com  Tue May 31 01:45:33 2005
From: dale.hagglund at gmail.com (Dale Hagglund)
Date: Mon, 30 May 2005 23:45:33 -0600
Subject: prime number
References: <1117421732.677244.237730@g49g2000cwa.googlegroups.com>
	<86wtphtm3f.fsf@guru.mired.org>
	<1117435844.389867.193900@g49g2000cwa.googlegroups.com>
	<86ekboarxc.fsf@ponoka.ed.shawcable.net>
Message-ID: <868y1waqyq.fsf@ponoka.ed.shawcable.net>

Sigh ... one of my intermediate versions of is_prime() returns True if
the n is *not* prime, and false otherwise.  The final version is
correct, though.

Dale.



From mauriceling at acm.org  Tue May 24 19:27:00 2005
From: mauriceling at acm.org (Maurice LING)
Date: Wed, 25 May 2005 09:27:00 +1000
Subject: Melbourne (Australia) Python User Group
In-Reply-To: <mailman.45.1116930243.18027.python-list@python.org>
References: <mailman.45.1116930243.18027.python-list@python.org>
Message-ID: <4293B844.8010508@acm.org>

Hi Anthony,

count me in...

Cheers
Maurice

Anthony wrote:
> Hi all,
> 
> I'm interested in starting a Python user group in Melbourne,
> Australia. So far there seems to have been a lot of interest from
> various parties, but for whatever reasons it's fizzled out. So I've
> decided that if there's going to be a user group, I'll have to start
> it myself (hopefully without the meetup.com albatross).
> 
> If you're in Melbourne, you're a python programmer and you're
> interested in meeting up, drop me an email and let me know. I'll
> probably also contact the Linux user groups in the area, but if you
> know of any other groups that would be interested, please let me know.
> If you want to forward this email on to other people or groups, feel
> free to do so.
> 
> Thanks,
> 
> Anthony
> 



From ccurvey at gmail.com  Tue May 10 12:56:47 2005
From: ccurvey at gmail.com (Chris Curvey)
Date: 10 May 2005 09:56:47 -0700
Subject: win32com and IIS
Message-ID: <1115744207.222691.276160@f14g2000cwb.googlegroups.com>

Hi all,

I have a python script that uses the PAMIE libraries to drive IE.  It
runs fine from the command line, but it appears to have some
permissions problem when I run it via CGI.  Here's the stack trace that
I'm getting.

  File "c:\documents and settings\chris\my
documents\cms\com\artfact\cms\model\cPAMIE.py", line 54, in __init__
    self._ie = DispatchEx('InternetExplorer.Application')
  File "C:\Program Files\Plone
2\Python\lib\site-packages\win32com\client\__init__.py", line 112, in
DispatchEx
    dispatch = pythoncom.CoCreateInstanceEx(clsid, None, clsctx,
serverInfo, (pythoncom.IID_IDispatch,))[0]
com_error: (-2147024891, 'Access is denied.', None, None)

I found this thread in the archives, but the changes made there don't
seem to have helped.

http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/3273ca109892b275/0da814cb9f341568?q=win32com+iis&rnum=2#0da814cb9f341568

Any suggestions?



From jmdeschamps at cvm.qc.ca  Wed May 18 23:03:12 2005
From: jmdeschamps at cvm.qc.ca (jean-marc)
Date: 18 May 2005 20:03:12 -0700
Subject: God damn error 666 (Tkinter in PythonWin)
Message-ID: <1116471792.647467.125690@g47g2000cwa.googlegroups.com>

Hello,

No I'm not angry - but my machine seems to be :-|

A pop-up dialog appears while trying to close the main PythonWin window
that has that error 'God damn error 666' - I can close this and then
the machine is ok BUT bye bye PythonWin...

This occurs after a progression of windows (small 'w' for the frame on
screen, not the OS) related problems occur within the PythonWin
environment, and these problems follow after trying to debug Tkinter
apps from within PythonWin, which I had read was problematic, causing
all sorts of problem BUT never thinking it was the kind that couldn't
get fixed by a shut-down and reboot type of memory cleansing... Even
uninstalling all of Python and related stuff and re-installing them
does not make this better.

The progression of the sickness as best as I can remember is like this:
First, the debugger stalls and fails to permit correct exit,
Secong PythonWin seems fine (editor that is) but can't open any other
windows (browsers , pdf files etc) at the same time,
Third, Python's windows don't appear to fill out (documentation, for
example)
Fourth, I can't even open Pythonwin itself correctly, window open
without menus, or such stuff...

I think the nasty dialog referred to above appears between the third
and fourth events...

Sorry, this was not made to be a scientific test, so I can't be morfe
precise, it just happened to me twice recently because I'm on a 10-15 K
lines of program that uses Tkinter for the first time.

Mark Hammond doesn't seem to know where this comes from; thinks it
might be Tk related thing so I'm posting here in case it means anything
to anyone,

(My environment: ToshibaA70, Python 2.3.5, pyWin 203 (from
ActiveState), under Windows XP Pro SP2)

Hoping this is not CHTULHU telling to do something else with my life
;-)

Jean-Marc



From skip at pobox.com  Tue May  3 16:11:46 2005
From: skip at pobox.com (Skip Montanaro)
Date: Tue, 3 May 2005 15:11:46 -0500
Subject: atexit not being executed
In-Reply-To: <BAY107-F346052A2843B32F5855A118F180@phx.gbl>
References: <17015.37191.253238.398725@montanaro.dyndns.org>
	<BAY107-F346052A2843B32F5855A118F180@phx.gbl>
Message-ID: <17015.56066.224387.443242@montanaro.dyndns.org>


    Chris> The environment in which I am working is client/server and it is
    Chris> the server that processes all python code. I have tried creating
    Chris> a file (which in the case of what I have explained means that I
    Chris> can't issue a close command) and let the process run as I have
    Chris> before. When the process has finished and I try deleting the file
    Chris> I get a permission denied error. As soon as I stop the server for
    Chris> the environment it frees up the resources to this file. Not quite
    Chris> sure how they could be implmenting the python.

    Chris> I am assuming then that the Py_Finalize is not being called until
    Chris> maybe when the server terminates. This being the case it would
    Chris> not be any good as the server should be 'Up' all of the time!.

Yes, Py_Finalize is called at program exit.  It sounds to me like atexit is
doing exactly what it's supposed to do.  When the program exits, that file
will be closed.

    Chris> Can you think of any possible workarounds for this?

Other than figuring out a way to close the file at some other point during
server execution, no.

Skip


From mauriceling at acm.org  Fri May  6 18:02:42 2005
From: mauriceling at acm.org (Maurice LING)
Date: Sat, 07 May 2005 08:02:42 +1000
Subject: hard memory limits
References: <d5f9jl$k6d$1@domitilla.aioe.org>
	<mailman.88.1115374567.29826.python-list@python.org>
Message-ID: <d5gphu$hij$1@domitilla.aioe.org>

Hi everyone,

thanks for your help.

Yes, I'm using Mac OSX 1.3 with 256MB Ram. Each element in the list is a 
float. The list is actually a retrieved results of document IDs from 
SOAP interface. And Mac OSX does not have 'unlimit' command as shown,

Maurice-Lings-Computer:~ mauriceling$ unlimit
-bash: unlimit: command not found
Maurice-Lings-Computer:~ mauriceling$ which unlimit
Maurice-Lings-Computer:~ mauriceling$ sh unlimit
unlimit: unlimit: No such file or directory
Maurice-Lings-Computer:~ mauriceling$


Cheers
Maurice


From prabapython at yahoo.co.in  Wed May 11 10:06:12 2005
From: prabapython at yahoo.co.in (praba kar)
Date: Wed, 11 May 2005 15:06:12 +0100 (BST)
Subject: reg mail sending without smtp module
Message-ID: <20050511140612.47363.qmail@web8406.mail.in.yahoo.com>

Dear All,

         Is it possible to send a message as a mail
with out smtplib module?  If you find out any module
for mail sending(without smtplib) kindly mail me.

regards
Prabahar
 

________________________________________________________________________
Yahoo! India Matrimony: Find your life partner online
Go to: http://yahoo.shaadi.com/india-matrimony


From john at castleamber.com  Sun May  8 03:22:06 2005
From: john at castleamber.com (John Bokma)
Date: 8 May 2005 07:22:06 GMT
Subject: New Python regex Doc
References: <1113301533.054410.203710@z14g2000cwz.googlegroups.com>
	<mailman.1813.1113355346.1799.python-list@python.org>
	<1113856843.023012.165500@l41g2000cwc.googlegroups.com>
	<1113908069.264676.207090@g14g2000cwa.googlegroups.com>
	<1115328523.852744.110390@f14g2000cwb.googlegroups.com>
	<1115423751.016177.250650@o13g2000cwo.googlegroups.com>
	<1115444726.627426.172260@g14g2000cwa.googlegroups.com>
	<1115508491.462229.294020@o13g2000cwo.googlegroups.com>
	<B4hfe.44278$Cq2.29367@fe2.news.blueyonder.co.uk>
Message-ID: <Xns96501813BF92Acastleamber@130.133.1.4>

 wrote:

> When used in terms of Usenet, I think it can be applied in the sense
> of 'a troll who is greedy for attention'.
> 
> Hence the saying 'do not feed the troll'.

Unless you can cause a buffer overflow :-D

-- 
John                   Small Perl scripts: http://johnbokma.com/perl/
               Perl programmer available:     http://castleamber.com/
            Happy Customers: http://castleamber.com/testimonials.html
                        


From garabik-news-2005-05 at kassiopeia.juls.savba.sk  Mon May 30 01:56:35 2005
From: garabik-news-2005-05 at kassiopeia.juls.savba.sk (garabik-news-2005-05 at kassiopeia.juls.savba.sk)
Date: Mon, 30 May 2005 05:56:35 +0000 (UTC)
Subject: network ping
References: <4LednU5KFIZc2AffRVn-3Q@comcast.com>
Message-ID: <d7e9uj$nie$2@ns.felk.cvut.cz>

Sam the Cat <sam_spam_cat at comcast.net> wrote:
> Besides calling the external ping utility -- is there a way native to python
> to execute a similar utility ?
> 
> 

yes

http://www.python.org/~jeremy/python.html

-- 
 -----------------------------------------------------------
| Radovan Garab?k http://kassiopeia.juls.savba.sk/~garabik/ |
| __..--^^^--..__    garabik @ kassiopeia.juls.savba.sk     |
 -----------------------------------------------------------
Antivirus alert: file .signature infected by signature virus.
Hi! I'm a signature virus! Copy me into your signature file to help me spread!


From lbates at syscononline.com  Tue May 17 17:57:51 2005
From: lbates at syscononline.com (Larry Bates)
Date: Tue, 17 May 2005 16:57:51 -0500
Subject: Sorting x lists based on one list ... maybe an example would
	make sense:
In-Reply-To: <ssnie.428$VB6.184@newssvr12.news.prodigy.com>
References: <eonie.426$VB6.363@newssvr12.news.prodigy.com>
	<ssnie.428$VB6.184@newssvr12.news.prodigy.com>
Message-ID: <428A68DF.4070705@syscononline.com>

Why not merge the lists together using zip() and then
sort.

info=zip(l1, l2, l3)
info.sort()
info.reverse

Larry Bates

Philippe C. Martin wrote:
> l1 = ['a','b','c']
> l2 = ['toto','titi','tata'] # 'toto' refers to 'a', 'titi' to b' ....
> l3 = ['foo','bar','doe'] # 'foo' refers to 'a' ........
> 
> I want to reverse sort l1 and have l2 and l3 follow accordingly.
> 
> Regards,
> 
> Philippe
> 
> 
> 
> 
> 
> 
> Philippe C. Martin wrote:
> 
> 
>>Hi,
>>
>>I'm looking for an easy algorithm - maybe Python can help:
>>
>>I start with X lists which intial sort is based on list #1.
>>
>>I want to reverse sort list #1 and have all other lists sorted
>>accordingly.
>>
>>Any idea is welcome.
>>
>>Regards,
>>
>>Philippe
> 
> 


From sjmachin at lexicon.net  Sat May 14 09:34:29 2005
From: sjmachin at lexicon.net (John Machin)
Date: Sat, 14 May 2005 23:34:29 +1000
Subject: replace text in unicode string
References: <1116058664.847601.293790@z14g2000cwz.googlegroups.com>
	<1116062635.443040.202740@o13g2000cwo.googlegroups.com>
Message-ID: <4ktb81thr7ej5df26iusj6m4dc0erorifo@4ax.com>

On 14 May 2005 02:23:55 -0700, "Dan Bishop" <danb_83 at yahoo.com> wrote:

>Svennglenn wrote:
>> I'm having problems replacing text in a
>> unicode string.
>> Here's the code:
>>
>> # -*- coding: cp1252 -*-
>>
>> titel = unicode("?", "iso-8859-1")

To the OP:
This is not causing the later problem, but it's evidence of the wrong
mindset for a start. You have just lied to the interpreter. You said
that your script was encoded using cp1252, but then you tried to pass
off a string constant as iso-8859-1!!! They are not exactly the same
repertoire. You need to make up your mind what character repertoire
your application should be confined to, and then apply that
restriction rigorously.

To get over the error message, all you need to do is this:

titel = u"?"

... and didn't I (and/or somebody else) tell you this only a few days
ago?


>> print titel
>> print type(titel)
>>
>> titel.replace("?", "a")
>>
>> When i run this program I get this error:
>>
>>     titel.replace("?", "a")
>> UnicodeDecodeError: 'ascii' codec can't decode byte 0xe4 in position
>0:
>> ordinal not in range(128)
>>
>> How can i replace text in the Unicode string?
>
>titel = titel.replace(u"?", "a")

To Dan:
Fortuitously this works but if the OP wanted to change it to (say) an
umlauted-u then it would have thrown another UnicodeDecodeError.

Everybody please get into the habit of using u"blah blah" when you're
working with Unicode.

Like this:

titel = titel.replace(u"?", u"a")



From rkern at ucsd.edu  Wed May 11 20:48:30 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Wed, 11 May 2005 17:48:30 -0700
Subject: Python Documentation (should be better?)
In-Reply-To: <4282A5DF.44C84B18@pauahtun.org>
References: <5C99C308457E6D4EA5448EA52A66004A675A6E@or.mxim.com>	<17026.26789.592527.975821@montanaro.dyndns.org>	<mailman.398.1115843305.29826.python-list@python.org>	<428276e8$0$318$626a14ce@news.free.fr>	<mailman.411.1115854727.29826.python-list@python.org>	<lvudnZwSQdrDAh_fRVn-sQ@comcast.com>
	<4282A5DF.44C84B18@pauahtun.org>
Message-ID: <d5u8mk$k6n$1@sea.gmane.org>

Ivan Van Laningham wrote:

> http://www.python.org/doc/
> 
> Type string methods into the box; push submit.  Result:
> 
> "Results 1 - 20 of about 9,800 from www.python.org for string methods.
> (0.14 seconds)"
> 
> I did not go to docs.python.org, I went to www.python.org and clicked on
> the doc link.  There is a difference, clearly, but I maintain there
> should not be.  If I click on "Documentation" on the main page, am I
> asking for "All possible old and new and broken and repaired and
> intermediate documentation pages"?  No, I kind of thought I was asking
> for the latest documentation.
 >
> I tried string methods at docs.python.org, and got "Results 1 - 20 of
> about 455 from docs.python.org for string methods. (0.11 seconds)";
> "string methods" retrieved "Results 1 - 10 of about 30 from
> docs.python.org for "string methods". (0.13 seconds)".  Why the
> difference?

Searching on docs.python.org goes through just the stuff that's on 
docs.python.org, which is pretty much just documentation. Google's magic 
points to the current documentation.

Searching on www.python.org trolls through the entire www.python.org 
site. The search box doesn't narrow its scope just because you happen to 
be in the Documentation section currently. It doesn't get the current 
documentation because Google's magic gets a bit confused.

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From steven.bethard at gmail.com  Thu May  5 14:15:07 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Thu, 05 May 2005 12:15:07 -0600
Subject: How to detect a double's significant digits
In-Reply-To: <1115315863.050413.275390@g14g2000cwa.googlegroups.com>
References: <1115314620.902071.323410@f14g2000cwb.googlegroups.com>
	<mailman.53.1115315497.29826.python-list@python.org>
	<1115315863.050413.275390@g14g2000cwa.googlegroups.com>
Message-ID: <s6ydnVxK45ow_-ffRVn-qQ@comcast.com>

mrstephengross wrote:
> So how can I get the kind of information I want then?
> 
> For example:
> 
> 0.103 --> 3
> 0.0103 --> 4
> 0.00103 --> 5 
> 0.000103 --> 6 
> 0.0000103 --> 7 

Beware that this is probably only relevant if you have your numbers as 
strings, not as floats:

py> 0.103
0.10299999999999999

But, assuming you have your numbers as strings, I would suggest looking 
at str.split() and len().  I'd give you an example, but this sounds 
kinda like a homework assignment.

STeVe


From flamesrock at gmail.com  Tue May 31 21:00:01 2005
From: flamesrock at gmail.com (flamesrock)
Date: 31 May 2005 18:00:01 -0700
Subject: running tkinter
In-Reply-To: <mailman.304.1117574167.18027.python-list@python.org>
References: <a14ne.9382$zb.8542@trndny04>
	<mailman.304.1117574167.18027.python-list@python.org>
Message-ID: <1117587600.825404.80230@g14g2000cwa.googlegroups.com>

I'm having the same problem (latest gentoo 2005.0) and I've installed
the tcl and tk languages.



From rupole at hotmail.com  Thu May 19 18:05:09 2005
From: rupole at hotmail.com (Roger Upole)
Date: Thu, 19 May 2005 18:05:09 -0400
Subject: How to receive events (eg. user mouse clicks) from IE
References: <1116476411.853695.235670@g14g2000cwa.googlegroups.com>
	<428c3cbe$1_1@spool9-west.superfeed.net>
	<1116529345.146032.91880@f14g2000cwb.googlegroups.com>
	<428cf5a9$1_1@spool9-west.superfeed.net>
	<1116537405.495521.252570@f14g2000cwb.googlegroups.com>
Message-ID: <428d0e75$1_2@spool9-west.superfeed.net>

Usually you get that error if you try to access the Document object
before the page has loaded.  Try adding a delay after ie.Navigate,
something like

while ie.ReadyState<>4:
    time.sleep(0.5)
There are some constants that show up in win32com.client.constants
that represent the ReadyState's, but I can't remember the names offhand.

The only real reference for the Html objects (other than reading the
generated module) is MSDN.  Google turned this up:
http://msdn.microsoft.com/library/default.asp?url=/workshop/browser/mshtml/reference/events/htmlanchorevents/htmlanchorevents.asp

           Roger


<cal_2pac at yahoo.com> wrote in message 
news:1116537405.495521.252570 at f14g2000cwb.googlegroups.com...
> Thanks for your prompt responses and the code.
> However, when I run the code I get com error
> d=win32com.client.DispatchWithEvents(ie.Document, Doc_Events)
>  File "C:\Python23\lib\site-packages\win32com\client\__init__.py",
> line 199, in __getattr__
>    return getattr(self._obj_, attr)
>  File "C:\Python23\lib\site-packages\win32com\client\__init__.py",
> line 455, in __getattr__
>    return self._ApplyTypes_(*args)
>  File "C:\Python23\lib\site-packages\win32com\client\__init__.py",
> line 446, in _ApplyTypes_
>    return self._get_good_object_(
> com_error: (-2147352567, 'Exception occurred.', (0, None, None, None,
> 0, -2147467259), None)
>
> I am a newbie to python(started coding a few months ago).
> This appears to be a fairly common error when COM objects are not
> hooked up properly. Though I have not been able to find a solution or
> the reason for this.
> Thanks again for the explanation.All the information that I had
> acquired now seems to fall into place. I was not aware about
> doc_mod.HTMLAnchorEvents. Where can I find more documentation about
> this?
>
> Roger Upole wrote:
>> Here's a few more lines that hook the document's onactivate event.
>>
>> import win32com.client
>>
>>
> ie_mod=win32com.client.gencache.EnsureModule('{EAB22AC0-30C1-11CF-A7EB-0000C05BAE0B}'
>
>> ,0, 1, 1)
>>
> doc_mod=win32com.client.gencache.EnsureModule('{3050F1C5-98B5-11CF-BB82-00AA00BDCE0B}'
>
>> ,0 ,4, 0)
>> class IE_Events(ie_mod.DWebBrowserEvents2):
>>     def OnNavigateComplete2(self, pDisp, URL):
>>         print 'OnNavigateComplete2:', URL
>>
>> class Doc_Events(doc_mod.HTMLAnchorEvents):
>>     def Ononactivate(self):
>>         print 'onactivate', self.activeElement.outerHTML
>>
>>
> ie=win32com.client.DispatchWithEvents('InternetExplorer.Application',IE_Events)
>> ie.Visible=1
>> ie.Navigate('http://www.google.com')
>>
>> d=win32com.client.DispatchWithEvents(ie.Document, Doc_Events)
>>
>>     Roger
>>
>>
>> <cal_2pac at yahoo.com> wrote in message
>> news:1116529345.146032.91880 at f14g2000cwb.googlegroups.com...
>> > Hi
>> > Thanks for the response and for the code.
>> > However, I want to trap events like mouse click on the HTML
> document
>> > loaded by the web browser control. The code mentioned below
> provides
>> > events from the web browser control. I need to find out on which
>> > particular HTML tag did the user click for example.
>> > How do I find that out? There should be some way to refer to a
> document
>> > from a given web browser control and start receiving events from it
>> >
>> >
>> > Roger Upole wrote:
>> >> The two you'll need to run makepy for are Microsoft Internet
> Controls
>> > and
>> >> Microsoft HTML object Library.  If you run them manually, you
> should
>> > be
>> >> able to look at the generated code to get the guids.
>> >> Here's a minimal example:
>> >>
>> >> import win32com.client
>> >>
>> >>
>> >
> ie_mod=win32com.client.gencache.EnsureModule('{EAB22AC0-30C1-11CF-A7EB-0000C05BAE0B}',0,
>> >
>> >> 1, 1)
>> >> class IE_Events(ie_mod.DWebBrowserEvents2):
>> >>     def OnNavigateComplete2(self, pDisp, URL):
>> >>         print 'OnNavigateComplete2:', URL
>> >>
>> >>
>> >
> ie=win32com.client.DispatchWithEvents('InternetExplorer.Application',IE_Events)
>> >> ie.Visible=1
>> >> ie.Navigate('http://www.google.com')
>> >>
>> >>    hth
>> >>       Roger
>> >>
>> >>
>> >> <cal_2pac at yahoo.com> wrote in message
>> >> news:1116476411.853695.235670 at g14g2000cwa.googlegroups.com...
>> >> >I am trying to trap events from internet explorer eg. when user
>> > clicks
>> >> > on an html link - I need to get notified for that event.
>> >> >
>> >> > After looking through the newgroups / internet and reading
> through
>> >> > various sections in programming python on win32 - I understand
> that
>> >> > this can be done using DispatchWithEvents.
>> >> > I have also referred to discussions on comp.lang.python
>> >> >
>> >
> http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/a3c502d06412a5f8/0ee3083e71316da7?q=dispatchwithevents&rnum=43#0ee3083e71316da7
>> >> >
>> >> > and
>> >> >
>> >> >
>> >
> http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/1da0668794851296/5bcec1fda216c598?q=dispatchwithevents&rnum=19#5bcec1fda216c598
>> >> >
>> >> > So far - none of the newgroups postings report that IE events
> were
>> >> > trapped successfully (at least I could not find any). However,
>> > there is
>> >> > enough evidence that it can be done.
>> >> > My problems at the moment:
>> >> > a) The examples use early binding. However, I cannot get Python
>> > makepy
>> >> > to generate the code to force makepy process at run time - since
>> > COM
>> >> > makepy utility that I invoke from python win 32 does not have
> any
>> > entry
>> >> > for internet explorer.
>> >> > I tried to find the CLSID for IE
>> > 3050F613-98B5-11CF-BB82-00AA00BDCE0B
>> >> > but I get an exception
>> >> > b) Also one of the examples suggest that following code should
> work
>> >> >
>> >> >> mod = EnsureModule(...)
>> >> >
>> >> >> class MyEvents(mod.IDocumentEvents):
>> >> >>    # your methods here....
>> >> >
>> >> >> handler = MyEvents(ie.document)
>> >> >
>> >> >> # handler should start recieving events.
>> >> >
>> >> > however, what CLSID is to be used in EnsureModule... . I tried
> with
>> > a
>> >> > few but I always get the error 'NoneType' object has no
> attribute
>> >> > 'IDocumentEvents'
>> >> >
>> >> >
>> >> > An example that 'works' will be very useful
>> >> >
>> >>
>> >>
>> >>
>> >> ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure
> Usenet
>> > News==----
>> >> http://www.newsfeeds.com The #1 Newsgroup Service in the World!
>> > 120,000+ Newsgroups
>> >> ----= East and West-Coast Server Farms - Total Privacy via
> Encryption
>> > =----
>> >
>>
>>
>>
>>
>> ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet
> News==----
>> http://www.newsfeeds.com The #1 Newsgroup Service in the World!
>>100,000 Newsgroups
>> ---= East/West-Coast Server Farms - Total Privacy via Encryption =---
> 



----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups
----= East and West-Coast Server Farms - Total Privacy via Encryption =----


From vegeta.z at gmail.com  Mon May  2 22:31:40 2005
From: vegeta.z at gmail.com (vegetax)
Date: Mon, 02 May 2005 22:31:40 -0400
Subject: cgi "print statement" in multithreaded enviroment?
References: <mailman.59.1115079020.6583.python-list@python.org>
	<4276c282$0$153$e4fe514c@news.xs4all.nl>
	<mailman.60.1115079903.6583.python-list@python.org>
	<4276daca.521529900@news.oz.net>
Message-ID: <d56nea$mal$2@sea.gmane.org>

Bengt Richter wrote:

> On Mon, 02 May 2005 20:24:02 -0400, vegetax <vegeta.z at gmail.com> wrote:
> 
>>Irmen de Jong wrote:
>>
>>> vegetax wrote:
>>>> How can i use cgi'like print statement in a multitreaded web framework?
>>>> each thread has its own Servlet instance with request/response objects,
>>>> sys.stdout = self.response(which is a file like object) wont work
>>>> because all threads will set the same file object and it will be a
>>>> concurrence mess.
>>>> 
>>>> I am out of ideas here,so any hacks welcome =)
>>>> 
>>> 
>>> instead of:
>>> 
>>>     print "<html>.....</html>
>>> 
>>> do:
>>> 
>>>     print >>self.response, "<html>....</html>"
>>> 
>>> 
>>> --Irmen
>>
>>But i want to use "print" as a commodity feature, print >>
>>self.response,'html..'  is longer to type than
>>self.response.write('html..')
>>
>>The only clear way i am thinking right now is to write a preprocessor
>>,like quixote ptl,but thats sloww
>>
> Maybe assign an object to sys.stdout that has write etc methods that check
> what thread is calling and use self.response things that you assign to
> a property of that sys.stdout object instead of directly to sys.stdout.
> 
> I.e., something like
> 
>     sys.stdout = my_stdout_dispatcher
>     ...
>     # property out_channels stores self.response with thread id:
>     sys.stdout.out_channels = self.response(which is a file like object)
>     ...
> 
>     # print => sys.stdout.write => my_stdout_dispatcher.write('from some
>     # thread') which atomically looks up right self.response
>     print 'from some thread'
> 
> You may need some lock stuff to do this properly
> (to make self.response lookup info access effectively atomic),
> but that's a general idea. I don't know what other thread interaction
> issues you may have with the state of possibly mutable data being printed.
> 
> This is just an idea for an approach. I may not be understanding your
> problem at all ;-)
> 
> Regards,
> Bengt Richter

Something like this:

class ThreadSpecificFile:
?????????def?__init__(s):
?????????????self.files?=?[]
?????????def?set_stdout(f,thread_id):
?????????????self.files[thread_id]?=?f
?????????def?clean_up(thread_id):
?????????????del?self.files[thread_id]
?????????def?write(data):
?????????????self.files[thread.get_ident()].write(data)

sys.stdout = ThreadSpecificFile()

Should be a lock for self.files and i am not sure how to make
thread.get_ident() atomic




From mwm at mired.org  Thu May 12 01:15:25 2005
From: mwm at mired.org (Mike Meyer)
Date: Thu, 12 May 2005 00:15:25 -0500
Subject: Importing modules
References: <1115816747.292060.292200@o13g2000cwo.googlegroups.com>
Message-ID: <86hdh9kosy.fsf@guru.mired.org>

qwweeeit at yahoo.it writes:

> A part the fact that I have not understood the "real" difference
> between import and from ... import (or also from... import *), is it
> possible to re-build the application in only one chunck?
> This is only to better understand the application's structure, in order
> to implement a flow chart tool.

"import foo" creates foo in the current namespace. It'll be a module.

"from foo import bar" creates bar from the foo module in the current
namespace. It's type will be the same as it is in foo. Note that
assigning to bar in the current namespace after doing this import
*will not* change bar in foo.

> I have already developed a cross reference tool and I applied it to
> PySol (solitary card games). PySol is made up of almost 100 modules for
> a total of almost 30000 lines.
> To understand a program, however, you need also a flow chart...

*You* may need a flowchart. Lots of people don't. The last time I had
to document a program graphically, I used something other than
flowcharts (I've since forgotten the name, but could provide examples
on demand). Such tools are really only useful for describing a single
function. To understand the relationship between
functions/methods/etc., you really need other tools. UML is probably
the most used such tool in the OO world.

To understand a program, you need to understand the communications
channels between the components. Mashing all the components together
into one namespace destroys the very information you need to properly
understand the program. BON is a nice format for documenting such
things, but it's really aimed at a more pure OO environment than
Python provides.

       <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From chrispatton at gmail.com  Fri May 27 23:25:14 2005
From: chrispatton at gmail.com (chris patton)
Date: 27 May 2005 20:25:14 -0700
Subject: the problem wtih cgi
Message-ID: <1117250714.387429.73450@g44g2000cwa.googlegroups.com>

Hi everyone.

Has anyone seen that problem with running a python cgi script in a
server?
It takes you to myspace.com/redmartian or something. Anyway, does
anyone know when this problem will be fixed?



From bill.pursell at gmail.com  Sun May 15 10:51:41 2005
From: bill.pursell at gmail.com (bill)
Date: 15 May 2005 07:51:41 -0700
Subject: incorrect(?) shlex behaviour
In-Reply-To: <1116135273.280659.23590@g47g2000cwa.googlegroups.com>
References: <1116102603.247959.284790@g49g2000cwa.googlegroups.com>
	<1116135273.280659.23590@g47g2000cwa.googlegroups.com>
Message-ID: <1116168701.239988.246170@g43g2000cwa.googlegroups.com>

Its gets worse:
>>> from shlex import StringIO
>>> from shlex import shlex
>>> t = shlex(StringIO("2>&1"))
>>> while True:
...  b = t.read_token()
...  if not b: break
...  print b
...
2
&
1                    <----------- where's the '>' !?
>>> import shlex
>>> print shlex.split("2>&1")
['2>&1']

It strikes me that split should be behaving exactly the same way as
read_token, but that may be a misunderstanding on my part of what split
is doing.

However, it is totally bizarre that read_token discards the '>' symbol
in the string!  I don't know much about lexical analysis, but it
strikes me that discarding characters is a bad thing.



From http  Fri May 27 09:43:04 2005
From: http (Paul Rubin)
Date: 27 May 2005 06:43:04 -0700
Subject: write to the same file from multiple processes at the same time?
References: <mailman.175.1117200711.18027.python-list@python.org>
Message-ID: <7x1x7siy3b.fsf@ruckus.brouhaha.com>

Jp Calderone <exarkun at divmod.com> writes:
> >But they haven't.  They depend on messy things like server processes
> >constantly running, which goes against the idea of a cgi that only
> >runs when someone calls it.
> 
> SQLite is an in-process dbm.

http://www.sqlite.org/faq.html#q7

    (7) Can multiple applications or multiple instances of the same
    application access a single database file at the same time?

    Multiple processes can have the same database open at the same
    time. Multiple processes can be doing a SELECT at the same
    time. But only one process can be making changes to the database
    at once.

But multiple processes changing the database simultaneously is
precisely what the OP wants to do.


From Sebastien.Boisgerault at gmail.com  Wed May 18 16:55:07 2005
From: Sebastien.Boisgerault at gmail.com (=?iso-8859-1?q?S=E9bastien_Boisg=E9rault?=)
Date: 18 May 2005 13:55:07 -0700
Subject: NaN support etc.
In-Reply-To: <428ba190$0$7687$9b622d9e@news.freenet.de>
References: <mailman.160.1116438390.8733.python-list@python.org>
	<428ba190$0$7687$9b622d9e@news.freenet.de>
Message-ID: <1116449707.021063.132500@g44g2000cwa.googlegroups.com>


Martin v. L?wis a ?crit :
> Andreas Beyer wrote:
> > How do I find out if NaN, infinity and alike is supported on the
current
> > python platform?
>
> To rephrase Sebastian's (correct) answer: by
>
> 1. studying the documentation of the CPU vendor
> 2. studying the documentation of the compiler vendor, and performing
>    extensive tests on how the compiler deals with IEEE-754
> 3. studying the documentation of the system's C library, reading
>    its source code (if available), and performing extensive tests
>    of the IEEE-754 support in the C libray
> 4. studying Python's source code (you can spare yourself reading
>    documentation because there is none)

That's the theory. Granted, the floating point special
values handling may vary widely across platforms. The
fact that

    float('nan') == float('nan')

may be False (correct) for my Python 2.4 interpreter
(Linux Mandrake 10.x, compiled from the sources) and
True (too bad ..) for my Python 2.3 interpreter (rpm)
for the SAME operating system and computer is rather
unsettling ... at first.

But, practically, I have never found a platform where
the following fpconst-like code did not work:

    import struct
    cast = struct.pack

    big_endian = cast('i',1)[0] != '\x01'
    if big_endian:
       nan = cast('d', '\x7F\xF8\x00\x00\x00\x00\x00\x00')[0]
    else:
       nan = cast('d', '\x00\x00\x00\x00\x00\x00\xf8\xff')[0]

Can anybody provide an example of a (not too old or
exotic) platform where this code does not behave as
expected ?

Cheers,

SB



From rschroev_nospam_ml at fastmail.fm  Wed May  4 18:07:01 2005
From: rschroev_nospam_ml at fastmail.fm (Roel Schroeven)
Date: Wed, 04 May 2005 22:07:01 GMT
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <mailman.18.1115242075.29826.python-list@python.org>
References: <d4u60o$akh$1@news2.netvision.net.il>	<mailman.47.1114818531.14961.python-list@python.org>	<1114924100.296223.114020@g14g2000cwa.googlegroups.com>	<1114927892.321086.60190@z14g2000cwz.googlegroups.com>	<zX%ce.78213$ft1.5056576@phobos.telenet-ops.be>	<Zj2de.78345$a42.5091422@phobos.telenet-ops.be>	<8764y29x3m.fsf@uwo.ca>
	<877jihc7qv.fsf@uwo.ca>
	<mailman.18.1115242075.29826.python-list@python.org>
Message-ID: <9Ibee.81433$AX1.5235770@phobos.telenet-ops.be>

Martijn Pieters wrote:

> Dan Christensen wrote:
> 
>>Any hints for level 13?  I know how to make a call, but don't know "who"
>>to call.
> 
> 
> I haven't figured this one out yet either. Rather frustrating really.
> All the hints I've been given so far is to rmember the solution for
> level 12.

You don't really need the remember the solution; it's more the process 
that led you to find the solution.

-- 
If I have been able to see further, it was only because I stood
on the shoulders of giants.  -- Isaac Newton

Roel Schroeven


From superprad at gmail.com  Fri May 13 15:42:44 2005
From: superprad at gmail.com (superprad at gmail.com)
Date: 13 May 2005 12:42:44 -0700
Subject: creating words of diff lengths
In-Reply-To: <l3s981lrb1gp11sak3an57m6cio11mac9h@4ax.com>
References: <1116003134.531348.67830@g14g2000cwa.googlegroups.com>
	<l3s981lrb1gp11sak3an57m6cio11mac9h@4ax.com>
Message-ID: <1116013364.222465.117330@z14g2000cwz.googlegroups.com>

yes! sorry about that



From martin at v.loewis.de  Mon May 23 13:32:09 2005
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Mon, 23 May 2005 19:32:09 +0200
Subject: python24.zip
In-Reply-To: <4291ea5b$1@nntp0.pdx.net>
References: <mailman.249.1116595092.8733.python-list@python.org>
	<428e0cc3$0$29954$9b622d9e@news.freenet.de>
	<x7hdgw2zqi.fsf@handshake.de>
	<428faddd$0$26322$9b622d9e@news.freenet.de>
	<x7vf5bku5d.fsf@handshake.de>
	<4290dc79$0$9989$9b622d9e@news.freenet.de>
	<4291ea5b$1@nntp0.pdx.net>
Message-ID: <42921399.2050302@v.loewis.de>

Scott David Daniels wrote:
>>> Is the interpreter unable to call "C" functions ("stat" for example)
>>> to determine whether an object exists before it puts it on "path".
>>
>>
>> What do you mean, "unable to"? It just doesn't.
> 
> In fact, the interpreter doesn't necessarily know when it is
> affecting the path.

Now I remember what makes this stuff really difficult: PEP 302
introduces path hooks (sys.path_hooks), allowing imports from
other sources than files. So the items on sys.path don't have
to be directory or file names at all, and importing from them
may still succeed if though stat fails.

Regards,
Martin


From peter at engcorp.com  Mon May  9 08:48:27 2005
From: peter at engcorp.com (Peter Hansen)
Date: Mon, 09 May 2005 08:48:27 -0400
Subject: clear the files using python
In-Reply-To: <1115614504.045200.59420@o13g2000cwo.googlegroups.com>
References: <1115614504.045200.59420@o13g2000cwo.googlegroups.com>
Message-ID: <acidnRAWXN2kweLfRVn-vA@powergate.ca>

Sez sez:
> Each file's structure as below:
> Comments: This is article 1965 obtained from the website
> Title: Banana Report #65, September 2003
> Author: dylab
> Date: 1st September 2003
> Section: pulse
> 
> In the past month:
> A mass hit North America, cutting electricity to 50 million people
> across the North east
> 
> 
> I'm expected execute the python script so the file suppose to look like
> this:
> 
> pulse, In, the, past, month, A, mass, hit, North, America, cutting,
> electricity, to, 50, million, people, across, the, North east, dylab

You'll need either more examples or a more detailed description.  The 
above could be interpreted as something like "put the pulse section 
first, then exactly 19 words from the following text, removing 
punctuation and line breaks, and taking the last two words together as 
one, then add the 'author' field, and write them all out together with a 
field separator of ', ' (comma plus space)".

On the other hand, it could be interpreted a large number of other ways, 
and since none of us have any idea what you are trying to do with the 
results, we can't use our own intuition or experience to help.

I also personally find it hard to respond to questions like this with 
real code when there are things about the task which I find very 
surprising.  For example, you're throwing away the date information 
entirely, along with the comments and title.  Is that really intended?

And are the author and section fields always exactly one word, with no 
punctuation?  (What would happen if an author's name was "Hansen, 
Peter"?  How would you format that in the output without getting the 
first name confused with the next field?)

> Could you please point me to right direction here. Or provide some
> example code. In the mean time I'll be searching myself. I know you
> guys hate novice people like me but I would appreciated if you could
> provide little help here.

We don't "hate" novice people by any means... I suspect you are either 
trying to be self-deprecating or maybe you just haven't read this 
newsgroup for long.  c.l.p actually *loves* novices; it just doesn't 
prefer questions that aren't very clear.  Keep trying (and improving!) 
and you'll definitely get the help you need.

And your comment about Python being the best language for this is pretty 
close to the mark... but there are certainly a variety of ways to go 
about the task and the best might depend on a lot of unanswered questions.

-Peter


From miradan at sbcglobal.net  Fri May 13 11:25:24 2005
From: miradan at sbcglobal.net (Miradan)
Date: 13 May 2005 08:25:24 -0700
Subject: newbie - insert variable in pathname
In-Reply-To: <1115997344.519956.257990@z14g2000cwz.googlegroups.com>
References: <1115997344.519956.257990@z14g2000cwz.googlegroups.com>
Message-ID: <1115997924.433153.132080@g49g2000cwa.googlegroups.com>

import win32api

GIS_GIS_Parcels = "Database
Connections\\%s at GIS_srv-e?arth.sde\\GIS.GIS.Cadastral\\G?IS.GIS.Parcels"
% (win32api.GetUserName())

HTH



From michele.simionato at gmail.com  Thu May  5 04:51:32 2005
From: michele.simionato at gmail.com (Michele Simionato)
Date: 5 May 2005 01:51:32 -0700
Subject: Adding new methods to new-style classes dynamically
In-Reply-To: <1115282109.707219.163660@f14g2000cwb.googlegroups.com>
References: <1115282109.707219.163660@f14g2000cwb.googlegroups.com>
Message-ID: <1115283092.509000.166530@g14g2000cwa.googlegroups.com>

Do you mean setattr?

setattr(A, meth_name, lambda self: type(self))
               

       Michele Simionato



From mstarzyk at gmail.com  Mon May  2 08:23:58 2005
From: mstarzyk at gmail.com (mstarzyk at gmail.com)
Date: 2 May 2005 05:23:58 -0700
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <1114828856.889984.171750@g14g2000cwa.googlegroups.com>
References: <d4u60o$akh$1@news2.netvision.net.il>
	<1114828856.889984.171750@g14g2000cwa.googlegroups.com>
Message-ID: <1115036638.557573.153250@z14g2000cwz.googlegroups.com>

Any hints on level 6 ?
There is "zip" in the page source, "ZIp" in the
image data, but have no clue what to do with them
- tried many things :). 

Thanks, 
Maciek



From dalke at dalkescientific.com  Tue May 24 12:04:43 2005
From: dalke at dalkescientific.com (Andrew Dalke)
Date: Tue, 24 May 2005 16:04:43 GMT
Subject: searching substrings with interpositions
References: <1116926253.186047.195260@g43g2000cwa.googlegroups.com>
	<3fgekjF7lq3qU1@individual.net>
	<1116939594.958040.14110@z14g2000cwz.googlegroups.com>
Message-ID: <pan.2005.05.24.16.04.43.430979@dalkescientific.com>

borges2003xx at yahoo.it wrote:
> the next step of my job is to make limits of lenght of interposed
> sequences (if someone can help me in this way i'll apreciate a lot)
> thanx everyone.

Kent Johnson had the right approach, with regular expressions.
For a bit of optimization, use non-greedy groups.  That will
give you shorter matches.

Suppose you want no more than 10 bases between terms.  You could
use this pattern.

    a.{,10}?t.{,10}?c.{,10}?g.{,10}?


>>> import re
>>> pat = re.compile('a.{,10}t.{,10}c.{,10}g.{,10}?')
>>> m = pat.search("tcgaacccgtaaaaagctaatcg")
>>> m.group(0), m.start(0), m.end(0)
('aacccgtaaaaagctaatcg', 3, 23)
>>> 

>>> pat.search("tcgaacccgtaaaaagctaatttttttg")
<_sre.SRE_Match object at 0x9b950>
>>> pat.search("tcgaacccgtaaaaagctaattttttttg")
>>> 

If you want to know the location of each of the bases, and
you'll have less than 100 of them (I think that's the limit)
then you can use groups in the regular expression language

>>> def make_pattern(s, limit = None):
...     if limit is None:
...         t = ".*?"
...     else:
...         t = ".{,%d}?" % (limit,)
...     text = []
...     for c in s:
...         text.append("(%s)%s" % (c, t))
...     return "".join(text)
... 
>>> make_pattern("atcg")
'(a).*?(t).*?(c).*?(g).*?'
>>> make_pattern("atcg", 10)
'(a).{,10}?(t).{,10}?(c).{,10}?(g).{,10}?'
>>> pat = re.compile(make_pattern("atcg", 10))
>>> m = pat.search("tcgaacccgtaaaaagctaatttttttg")
>>> m
<_sre.SRE_Match object at 0x8ea70>
>>> m.groups()
('a', 't', 'c', 'g')
>>> for i in range(1, len("atcg")+1):
...   print m.group(i), m.start(i), m.end(i)
... 
a 3 4
t 9 10
c 16 17
g 27 28
>>> 



				Andrew
				dalke at dalkescientific.com



From sjmachin at lexicon.net  Mon May 23 08:20:28 2005
From: sjmachin at lexicon.net (John Machin)
Date: Mon, 23 May 2005 22:20:28 +1000
Subject: Strange behaviour of floating point constants in imported modules
References: <4291b2c0$1@news.home.net.pl>
Message-ID: <hae391d0ignv4v336au1n1tv2n18n7j8ca@4ax.com>

On Mon, 23 May 2005 12:39:00 +0200, Tomasz Lisowski
<tomlis at notmyisp.pl> wrote:

>Hi,
>
>We are distributing our Python application as the short main script (.py 
>file) and a set of modules compiled to the .pyc files. So far, we have 
>always treated .pyc files as portable between platforms, 

There is no guarantee at all that a .pyc file is good for any purpose
outside the machine that produced it.  In practice, however, you
*should* be able to rely on no surprises if you have the same platform
and the same version of Python; do you?

How did you transfer the .pyc files from one box to the other? A
Windows installer? A ZIP file? FTP using text mode? Plain-text
attachments to an e-mail message?


>but recently we 
>have discovered an annoying problem. In a module, there is the following 
>code fragment:
>
>Deg2Rad = math.pi/180.0
>angleEPS = 0.5
>angle0B = angleEPS*Deg2Rad
>
>which calculates 'angle0B' as the angle of a half of a degree, converted 
>to radians. The module has been compiled on an English Windows XP 
>machine, and then tested on a Polish Windows XP workstation.
>
>What was our astonishment, when various exceptions started to be raised 
>on a test machine (no problem on the original English-version Windows 
>XP). We have traced them to the fact, that both angleEPS and angle0B 
>were found to be ZERO (!!!), whereas in reality, angle0B is about 0.008. 

What evidence do you have? Have you disassembled the .pyc file on both
boxes and diff'ed the results? Have you computed checksums on both
boxes?

>And this all happened silently, without any error during the import of 
>the module!
>
>What's the reason of this error? I start thinking, that it may be 
>related to the fact, that the decimal point on the Enlish Windows XP is 
>the '.' character, and on the Polish one - ','.

This is *extremely* unlikely. Firstly, you are (I understand) talking
about a .pyc file, that was produced on an English Windows box.  Even
though the "180.0" and the "0.5" are visible as character strings in
the .pyc file, Python sure doesn't use the locale when it loads a .pyc
file.

Secondly, even if you are talking about a .py file, Python takes
absolutely no notice of the locale when it compiles the .py file.
Polish programmers write "0.5", not "0,5". Read the language reference
manual, section 2.4.5 -- it uses ".", not "whatever the decimal point
character might be in your locale". If it did depend on locale, you
would need a locale declaration at the top of the file, if one wanted
.py files to be portable internationally; ever seen or heard of such a
declaration?

Thirdly, if the dot was interpreted as something other than a decimal
point, then what? Perhaps assign a tuple (0, 5), or perhaps a syntax
error; zero is achieved under what conditions?

It's more likely that the .pyc file has been damaged somehow. AFAIK
they don't have checksums.

>
>Is there a good method to avoid this kind of problems? How to make such 
>distributed modules really portable?

Distribute source. 

HTH,

John



From martin.witte at gmail.com  Sat May  7 12:12:21 2005
From: martin.witte at gmail.com (wittempj@hotmail.com)
Date: 7 May 2005 09:12:21 -0700
Subject: path(file)
In-Reply-To: <mailman.145.1115482035.29826.python-list@python.org>
References: <mailman.145.1115482035.29826.python-list@python.org>
Message-ID: <1115482341.049045.211220@z14g2000cwz.googlegroups.com>

What about start reading http://docs.python.org/lib/module-os.path.html?



From temp at mclift.fsnet.co.uk  Tue May  3 15:00:49 2005
From: temp at mclift.fsnet.co.uk (temp at mclift.fsnet.co.uk)
Date: 3 May 2005 12:00:49 -0700
Subject: Sequences in list
In-Reply-To: <mailman.52.1115069676.6583.python-list@python.org>
References: <1115063524.407859.273070@o13g2000cwo.googlegroups.com>
	<d56519$qem$1@sea.gmane.org>
	<mailman.52.1115069676.6583.python-list@python.org>
Message-ID: <1115146849.029539.85310@o13g2000cwo.googlegroups.com>

Hi Michael,

Thanks for a quick response, I appreciate it. I will have to get back
to you tomorrow, as I can't check what you've given me right now. I
presume the fact that you mention the word note in your code you have
realised that I'm trying to search for musical sequences. I tried to
put my problem across in the way I did, not mentioning music, so as not
to confuse the matter. So simply put, I'm checking a list for musical
sequences, without having any idea as to how they might be formed.

Thanks,

Malcolm



From jonasmg at softhome.net  Sat May 21 05:16:33 2005
From: jonasmg at softhome.net (Jonas Melian)
Date: Sat, 21 May 2005 10:16:33 +0100
Subject: [Tutor] Comparing a string
In-Reply-To: <027001c55d8f$613050b0$358c8651@xp>
References: <428DB13D.3040306@softhome.net> <027001c55d8f$613050b0$358c8651@xp>
Message-ID: <428EFC71.9010408@softhome.net>

Alan G wrote:
>>I'm tryin compare a string with a value with style of
> 
> Use regular expressions and turn it around:
> 
> import re
> s = 'i686'
> ex = re.compile('i?86')
> if ex.match(s): print 'they match!'
> 
> Is that what you mean?
> 
> Alan G.
> 
> 

Thanks, that's the way. But in a expression regular ('i?86') it would be:

('i[0-9]86') or ('i\d86') for match a number


From marco.colombo at gmail.com  Fri May 20 12:57:38 2005
From: marco.colombo at gmail.com (Marco Colombo)
Date: 20 May 2005 09:57:38 -0700
Subject: embedded function body
Message-ID: <1116608258.789670.244450@g14g2000cwa.googlegroups.com>

Hi,
I need to embed an user-supplied python function body in a C program.
That is, the user has no control over the function definition:

def afunction():
    <here goes user code>

Now, the problem is that I can't just append the supplied string,
because I need to properly indent it which isn't trivial - just adding
a tab in front of every line won't do. I'm considering two approaches:
1) write an indent function which is more aware of python syntax;
2) use the python lexxer and work with parse trees.

I've done some experiments with 2). The idea was to parse the following
program:

def afunction():
    pass

and the user supplied string (as a complete program) separately, then
replace the <suite> node in the function definition with one including
the statements from the user program.

I've got something that seems to work (but getting
allocation/deallocation right requires some work), but it seems to me
it's a bit awkward. Is the PyNode_* interface public and stable? Is it
ok to use it?

Any advice? Am I missing something? Should I try approach 1)?

TIA,
.TM.



From pwatson at redlinepy.com  Thu May 19 10:42:00 2005
From: pwatson at redlinepy.com (Paul Watson)
Date: Thu, 19 May 2005 09:42:00 -0500
Subject: newbie file/DB processing
References: <1116445969.381550.99280@f14g2000cwb.googlegroups.com>
Message-ID: <3f3mtnF5ji19U1@individual.net>

"len" <lsumnler at gmail.com> wrote in message 
news:1116445969.381550.99280 at f14g2000cwb.googlegroups.com...
> I am an old time
> cobol programmer from the IBM 360/370 eria and this ingrained idea of
> file processing using file definition (FD's) I believe  is causing me
> problems because I think python requires a different way of looking at
> datafiles and I haven't really gotten my brain around it yet.

Welcome, Len.

> I would
> like to create a small sequential file, processing at first to store a
> group id, name, amount, and date which I can add to delete from and
> update

In addition to the suggestions already given, you might take a look at the 
struct module.  This will let you use fixed-width binary records.

The concept of streams found in UNIX takes some getting used to.  Many files 
are maintained as text using delimited, variable length fields with a 
newline at the end.  Try 'cat /etc/passwd' on a UNIX/Linux host to see such 
a file using a colon ':' as the delimiter.

I turn to the 'od' command when I want the truth.  Use it to see what bytes 
are -really- in the file.  The following should work on Linux or under 
Cygwin if you are still using Windows.

    od -Ax -tcx1 thefile.dat

You can use od to look at data in the stream.  The output of the print 
command is going into the od command.

$ print "now"|od -Ax -tcx1
000000 6e 6f 77 0a
         n   o   w  \n
       6e 6f 77 0a
000004 




From http  Mon May  9 21:23:16 2005
From: http (Paul Rubin)
Date: 09 May 2005 18:23:16 -0700
Subject: Unique Elements in a List
References: <1115676903.432187.294910@z14g2000cwz.googlegroups.com>
Message-ID: <7xbr7jq3gb.fsf@ruckus.brouhaha.com>

"superprad at gmail.com" <superprad at gmail.com> writes:
> Is there an easy way to grab the Unique elements from a list?
> For Example:
> data = [0.1,0.5,0.6,0.4,0.1,0.5,0.6,0.9]

Untested: here's an iterator that gives you the index and value,
without reordering.  Uses dicts instead of sets for backwards compatibility.

def unique_elements(data):
    seen = {}
    for n,x in data:
       if x not in seen:
          seen[x] = 1
          yield n,x


From glauco.silva at cenpra.gov.br  Thu May  5 09:04:52 2005
From: glauco.silva at cenpra.gov.br (Glauco Silva)
Date: Thu, 5 May 2005 10:04:52 -0300
Subject: problem in the compiler ?
References: <338366A6D2E2CA4C9DAEAE652E12A1DE025204E3@au3010avexu1.global.avaya.com>
Message-ID: <002501c55173$06b63320$e87290c8@piau>

So , I will try to explain !
I?m trying to modify a code that doesn?t belong to me.

I thought that there was a bug in the compilation of Pmw.RadioSelect, but
there wans't.

I hadn't noticed that the code invoked the button of radioselect in another
part of it. Now I simply took off the part of the code which invoked the
button and the program is working as I expected. Thanks for your help.

Anyway, the code was this :
 -----------------------------------------
self.myButton = Pmw.RadioSelect(frame, selectmode = MULTIPLE, command =
self.Function)
self.myButton.add('C1')
self.myButton.pack()
            ...

self.myButton.invoke('C1')

-----------------------------------------


----- Original Message ----- 
From: "Delaney, Timothy C (Timothy)" <tdelaney at avaya.com>
To: "Glauco Silva" <glauco.silva at cenpra.gov.br>; <python-list at python.org>
Sent: Wednesday, May 04, 2005 8:20 PM
Subject: RE: problem in the compiler ?


Glauco Silva wrote:

> I?m sorry, I feel I didn't comunicate very well .
> The program I am writing is a part of a big project, so it would be
> no use to post it here as it involves many other things and concepts.

We wouldn't want the whole thing - that would be useless. What you need to
do is trim it down to the smallest piece of code that causes the problem.
Normally doing this reveals the actual problem, and you don't need to go to
the newsgroup.

> But i solve my problem and don?t have bug. My code was wrong.

Excellent. You should now post your solution to the newsgroup.

Tim Delaney




-- 
No virus found in this incoming message.
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From burlo.stumproot at gmail.com  Sat May 28 15:38:18 2005
From: burlo.stumproot at gmail.com (burlo.stumproot at gmail.com)
Date: Sat, 28 May 2005 19:38:18 GMT
Subject: pygame 1.6 for windows (python2.4)
References: <1116959151.370529.261690@g49g2000cwa.googlegroups.com>
	<429380c5$0$24449$da0feed9@news.zen.co.uk>
	<1116969098.442603.193670@g43g2000cwa.googlegroups.com>
	<4293a405$0$23946$db0fefd9@news.zen.co.uk>
Message-ID: <u3bs7w386.fsf@gmail.com>

Will McGugan <news at NOwillmcguganSPAM.com> writes:

> bc wrote:
> > Thanks for the reply, Will... I have been to the site, but I get a "URL
> > not found error" when I try the pygame 1.6 for python24 link;  I guess
> > I will just keep trying until the HTML is fixed.
> > 
> 
> Does seem to be broken at the moment. I've uploaded a copy to my server..
> 
> http://www.willmcgugan.com/pygame-1.6.win32-py2.4.exe
> 
> Will

And thanks from me too.

/me


From zhu_dave at yahoo.com  Thu May 26 19:00:57 2005
From: zhu_dave at yahoo.com (Dave Zhu)
Date: Thu, 26 May 2005 16:00:57 -0700 (PDT)
Subject: Symbol Tables
Message-ID: <20050526230057.93891.qmail@web30603.mail.mud.yahoo.com>

Hello,

I would like to know more about Python's symbol
tables. How are symbol tables implemented in Python?
Hash tables, lists, or arrays? I would really
appreciate if there is any documentation that you can
provide. Thank you in advance.

Dave


		
__________________________________ 
Discover Yahoo! 
Use Yahoo! to plan a weekend, have fun online and more. Check it out! 
http://discover.yahoo.com/


From tron.thomas at verizon.net  Sun May  8 18:05:15 2005
From: tron.thomas at verizon.net (tron.thomas at verizon.net)
Date: 8 May 2005 15:05:15 -0700
Subject: How to implement multiple constructors
Message-ID: <1115588999.677872.174250@z14g2000cwz.googlegroups.com>

I am a C++ developer with only a little experience using Python.  I
want to create a Python class where by I can construct an instance from
that class based on one of two different object types.

For example, if I were programming in C++, I would do the something
like the following:

class MyClass
{
public:
	MyClass(const SomeType& type);
	MyClass(const SomeOtherType& type);
...
};

In Python I cannot have two constructors that each take a single
argument as Python does not distinguish the type of objects that are
passed to functions.

One thought I had was to use the isinstance method such as this:

class MyClass:
	__init__(self, object):
		if isinstance(object, SomeType):
			#Initialize based on SomeType object
			...

		elif isinstance(object, SomeOtherType):
			#Initialize base on SomeOtherType object
			...

		else:
			#Raise some kind of exception
			...

Some research I've done on the Internet indicates that the use of the
isinstance method can be problematic, and I'm not sure if it is the
best approach to solving my problem.

What is the best way for me to implement this type of functionality in
Python?



From jjl at pobox.com  Fri May 13 17:24:11 2005
From: jjl at pobox.com (John J. Lee)
Date: 13 May 2005 21:24:11 +0000
Subject: Python Documentation (should be better?)
References: <mailman.389.1115837608.29826.python-list@python.org>
Message-ID: <87r7gakef8.fsf@pobox.com>

"Christopher J. Bottaro" <cjbottaro at alumni.cs.utexas.edu> writes:
[...]
> At my work, we are developing a product from scratch.  It is completely
> modular and the modules communicate via SOAP.  Because of that, we can
> implement individual modules in any language of our choosing (so long as
> they have good SOAP libs).

Oh dear!  Have fun <wink>

[...]
> After we were done, we talked about the pros and cons of the languages. 
> Funny, the con of Python (documentation) is PHP's strong point.  The PHP
> manual is extremely easy to navigate and its search feature works great. 
> Contrast that with Python, where you have to use "the tutorial" as the
> manual.  Also, the tutorial is just that...a tutorial, its a NOT a manual. 
> Its not organized like a manual and its not comprehensive like a manual,
> hell, raw_input() isn't even mentioned in Chapter 7. Input and Output.

Did they renumber it at some point?  In my copy: "7. Optional
Operating System Services".

Ohh, you mean the Language Reference?  I've been working full time as
a Python programmer for over a year (and using Python for many years
before that), and I've certainly never sat down and read it start to
finish (nor even read the whole thing in pieces, over the years).

[...]
> Now for the real kicker.  Some of the module documentation doesn't even list
> simple use cases or even the entire API.  When my coworker came to me with
> this complaint, my response was "oh, just load the interpreter, import the
> module and call dir() on it.  Then instantiate some objects and call dir()
> on them also".  My infatuation with Python had kept me from realizing the
> sheer ridiculousness of that method to learn to use an API.  Needless to
> say, my coworker's reaction to that statement snapped me out of it.  But
> its the truth.  How many of you learn a module by starting the interpreter
> and "playing" around with it and using dir()?

I don't.  dir(), the interactive prompt, module inspect &c. can all be
very handy at times, though.


> The next complaint isn't really about documentation.  Why isn't there a CPAN
> or PEAR for Python?  So many times I've search for a module, not found it,
> started to write it myself, then later stumble across it on Google...ugh!

Fair point, but PyPI (pypi.org) is growing (and now very easy to use),
and the Vaults of Parnassus was still there last time I looked.

[...]
> the future success of Python.  Even I, a huge Python advocate, has started
> to use PHP more often simply because I can find well documented,
> semi-official modules very easily and learning PHP is a breeze with the
> awesome PHP manual.
[...]

I don't recognize the problem with basic language features or module docs.

There is perhaps a problem with docs for language features on a more
advanced level than you complain about, though.


John


From codecraig at gmail.com  Tue May  3 14:12:22 2005
From: codecraig at gmail.com (codecraig)
Date: 3 May 2005 11:12:22 -0700
Subject: Read / Write image file
Message-ID: <1115143942.944188.158270@g14g2000cwa.googlegroups.com>

I have a image file on my pc, say a .jpg.  Basically I want to setup a
client/server socket, and I want the client to read in the jpg and send
it to the server, where the server can write that data into a new file
on the server.

I tried just doing something like..

x = open("abc.jpg")
y = x.read()
tmp = open("newFile.jpg", "w")
tmp.write(y)
tmp.close()
x.close()

...but that doesn't give me a copy of abc.jpg

any ideas?  Thanks



From onurb at xiludom.gro  Thu May 26 11:38:24 2005
From: onurb at xiludom.gro (bruno modulix)
Date: Thu, 26 May 2005 17:38:24 +0200
Subject: Python analog of Ruby on Rails?
In-Reply-To: <1117073580.063476.125140@g14g2000cwa.googlegroups.com>
References: <mailman.100.1117039885.18027.python-list@python.org>
	<4294adc3$0$2526$626a14ce@news.free.fr>
	<mailman.107.1117051304.18027.python-list@python.org>
	<1117073580.063476.125140@g14g2000cwa.googlegroups.com>
Message-ID: <4295ed71$0$6932$626a14ce@news.free.fr>

George Sakkis wrote:
> "Christopher J. Bottaro" wrote:
> 
> 
>>Cool signature, can anyone do a Python one that I can leech?  =)
>>
>>-- C
> 
> 
> Here's the transliteration in python for your address:
> 
> python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')])
>              for p in 'orattobjc at inmula.sc.saxetu.ude'.split('@')])"

Err... Looks like I've seen this before, but where ???

-- 
bruno desthuilliers
ruby -e "print 'onurb at xiludom.gro'.split('@').collect{|p|
p.split('.').collect{|w| w.reverse}.join('.')}.join('@')"
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From alet at unice.fr  Mon May  9 08:08:56 2005
From: alet at unice.fr (Jerome Alet)
Date: Mon, 09 May 2005 14:08:56 +0200
Subject: [ANNOUNCE] PyKota v1.08 is out
Message-ID: <pan.2003.06.13.19.46.21.516963@unice.fr>

Hi there,

I'm pleased to announce that PyKota v1.08 is out.

PyKota is an entirely Python written, GNU GPLed, centralized, full featured,
internationalized, and easily extensible, print quota and accounting
solution for CUPS and LPRng under Unix like systems like GNU/Linux.

This release includes two major bug fixes wrt LPRng and account balance
increasing or decreasing.

Also an LDAP schema is included with a sample LDIF file, they will serve
as the basis of the future LDAP storage backend, and are included in this
release for people to look at, try, and discuss.

Minor bugs were also fixed.

IMPORTANT : before upgrading, please DELETE the old site-packages/pykota
directory since some files are not needed anymore, and replace
'postgresql' with 'pgstorage' in /etc/pykota.conf

Learn more about PyKota, see live reports or screenshots, download the CVS
version or buy an official package from :

  http://www.librelogiciel.com/software/PyKota/action_Presentation

Discuss with us, ask for help, report problems or successes, on the
mailing list at :

  http://cgi.librelogiciel.com/mailman/listinfo/pykota

Thank you for reading

Jerome Alet


From peter at engcorp.com  Thu May 26 07:58:16 2005
From: peter at engcorp.com (Peter Hansen)
Date: Thu, 26 May 2005 07:58:16 -0400
Subject: how to import a module from a arbitraty path?
In-Reply-To: <mailman.128.1117099216.18027.python-list@python.org>
References: <NtOdnXdnsZi5swjfRVn-oA@comcast.com>
	<mailman.128.1117099216.18027.python-list@python.org>
Message-ID: <p46dnau0EK50JAjfRVn-uw@powergate.ca>

Simon Brunning wrote:
> On 5/26/05, Andy Leszczynski
> <leszczynscyATnospam.yahoo.com.nospam at bag.python.org> wrote:
> 
>>I have a program which is going to dynamicly load components from some
>>arbitrary defined paths. How to do that?
> 
> 
> You can locate them with os.walk and fnmatch. Then you can temporarily
> add the directory to sys,path, and import using __import__().

And if you do that, note the difference between adding your temporary 
directories at the start of sys.path and at the end of it...  (this is 
critical to understand if any of the dynamically loaded module names 
might collide with names of any other packages in your sys.path, 
including standard module names).

-Peter


From danb_83 at yahoo.com  Mon May  9 14:06:22 2005
From: danb_83 at yahoo.com (Dan Bishop)
Date: 9 May 2005 11:06:22 -0700
Subject: Inverse confusion about floating point precision
References: <mailman.218.1115660266.29826.python-list@python.org>
Message-ID: <1115661982.476675.7940@f14g2000cwb.googlegroups.com>

Skip Montanaro wrote:
> I understand why the repr() of float("95.895") is
"95.894999999999996".
> What I don't understand is why if I multiply the best approximation
to
> 95.895 that the machine has by 10000 I magically seem to get the lost
> precision back.  To wit:
>
>     % python
>     Python 2.3.4 (#12, Jul  2 2004, 09:48:10)
>     [GCC 3.3.2] on sunos5
>     Type "help", "copyright", "credits" or "license" for more
information.
>     >>> 95.895
>     95.894999999999996
>     >>> 95.895 * 10000
>     958950.0
>
> Why isn't the last result "958949.99999999996"?  IOW, how'd I get
back the
> lost bits?

You were just lucky.

The floating-point representation of 95.895 is exactly 6748010722917089
* 2**-46.

Multiplying by 10000 gives you 67480107229170890000 * 2**-46.  But
floats can have only 53 significant bits, so this gets normalized to
8237317776998399.658203125 * 2**-33 and rounded to 8237317776998400 *
2**-33, which happens to be exactly equal to 958950.

For analogy, consider a decimal calculator with only 3 significant
digits.  On this calculator, 1/7=0.143, an error of 1/7000.
Multiplying 0.143 by 7 gives 1.001, which is rounded to 1.00, and so
you get an exact answer for 1/7*7 despite roundoff error in the
intermediate step.



From mahs at telcopartners.com  Wed May  4 19:33:53 2005
From: mahs at telcopartners.com (Michael Spencer)
Date: Wed, 04 May 2005 16:33:53 -0700
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <4279538D.3040009@zopatista.com>
References: <d4u60o$akh$1@news2.netvision.net.il>	<mailman.47.1114818531.14961.python-list@python.org>	<1114924100.296223.114020@g14g2000cwa.googlegroups.com>	<1114927892.321086.60190@z14g2000cwz.googlegroups.com>	<zX%ce.78213$ft1.5056576@phobos.telenet-ops.be>	<Zj2de.78345$a42.5091422@phobos.telenet-ops.be>	<8764y29x3m.fsf@uwo.ca>	<877jihc7qv.fsf@uwo.ca>	<mailman.18.1115242075.29826.python-list@python.org>	<9Ibee.81433$AX1.5235770@phobos.telenet-ops.be>	<mailman.23.1115245662.29826.python-list@python.org>	<G9cee.81452$4_1.5246075@phobos.telenet-ops.be>
	<4279538D.3040009@zopatista.com>
Message-ID: <d5bloj$lcb$3@sea.gmane.org>

Martijn Pieters wrote:
> Roel Schroeven wrote:
> 
>> Unless Martijn Pieters here and mjpieters in the Python Challenge forum
>> are two differen persons, you've found it in the meantime, haven't you?
> 
> 
> Yup, I found it. How evil and devious. I found the hint without
> Googling, BTW, but can see how Google would have led you to the
> solution. I for one, will never again believe the claim there is no more
> evils..
> 
> Martijn Pieters
> 
Aha - got it.  Thanks for the hints

Michael



From rkern at ucsd.edu  Mon May 30 23:24:24 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Mon, 30 May 2005 20:24:24 -0700
Subject: Finite Element Solver for Python?
In-Reply-To: <%iQme.14897$IX4.1981@twister.nyc.rr.com>
References: <%iQme.14897$IX4.1981@twister.nyc.rr.com>
Message-ID: <d7gl86$5c4$1@sea.gmane.org>

Hsuan-Yeh Chang wrote:
> Dear All,
> 
> Anyone knows a good Finite Element Solver for python programer?

google("finite element python")

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From mrmaple at gmail.com  Mon May  9 17:18:40 2005
From: mrmaple at gmail.com (James Carroll)
Date: Mon, 9 May 2005 17:18:40 -0400
Subject: Resize an Image without PIL
In-Reply-To: <427FBD70.2080500@syscononline.com>
References: <1115657494.333985.278010@f14g2000cwb.googlegroups.com>
	<427FBD70.2080500@syscononline.com>
Message-ID: <b273c74105050914185dc7971d@mail.gmail.com>

Or if you're using wxPython, wx.Image can load, rescale and save. 
There's also a Python wrapper for imageMagick, which will do just
about anything to medium-small files.

One way or another you'll need to incorporate (depend on) something
that can decode the various image file formats that you need, and
something that will resample /resize the image.

What's the reason to not use PIL?  What libraries are you using?

-Jim

On 5/9/05, Larry Bates <lbates at syscononline.com> wrote:
> PIL is the best way.  Or you can call some external program to
> do it (using os.system).
> 
> Larry Bates
> 
> 
> querypk at gmail.com wrote:
> > Hi I would like to know how to resize an Image without using python
> > Imaging library.
> >
> --
> http://mail.python.org/mailman/listinfo/python-list
> 
>


From madsurfer2000 at hotmail.com  Fri May 27 18:18:39 2005
From: madsurfer2000 at hotmail.com (madsurfer2000 at hotmail.com)
Date: 27 May 2005 15:18:39 -0700
Subject: [pysqlite] Equivalent for SHOW TABLES?
In-Reply-To: <d77sqb$6lk$1@news.hispeed.ch>
References: <d77sqb$6lk$1@news.hispeed.ch>
Message-ID: <1117232319.034996.210160@g43g2000cwa.googlegroups.com>

F. GEIGER wrote:
>
> It would be nice somehow to be able to ask the database what tables it
> contains. Is anyone doing this that way? How do you do that?
>
Information can be found in "Information_Schema_TABLES"

See:
http://www.sqlite.org/cvstrac/wiki?p=InformationSchema



From peter at engcorp.com  Fri May 27 18:06:41 2005
From: peter at engcorp.com (Peter Hansen)
Date: Fri, 27 May 2005 18:06:41 -0400
Subject: write to the same file from multiple processes at the same time?
In-Reply-To: <7x1x7siy3b.fsf@ruckus.brouhaha.com>
References: <mailman.175.1117200711.18027.python-list@python.org>
	<7x1x7siy3b.fsf@ruckus.brouhaha.com>
Message-ID: <LdOdnf5kluybBwrfRVn-2Q@powergate.ca>

Paul Rubin wrote:
> http://www.sqlite.org/faq.html#q7
[snip]
>     Multiple processes can have the same database open at the same
>     time. Multiple processes can be doing a SELECT at the same
>     time. But only one process can be making changes to the database
>     at once.
> 
> But multiple processes changing the database simultaneously is
> precisely what the OP wants to do.

What isn't described in the above quote from the FAQ is how SQLite 
*protects* your data from corruption in this case, unlike the "raw" 
approach where you just use file handles.

And PySQLite conveniently wraps the relevant calls with retries when the 
database is "locked" by the writing process, making it roughly a 
no-brainer to use SQLite databases as nice simple log files where you're 
trying to write from multiple CGI processes like the OP wanted.

Disclaimer: I haven't actually done that myself, and have only started 
playing with pysqlite2 a day ago, but I have spent a fair bit of time 
experimenting and reading the relevant docs and I believe I've got this 
all correct.

-Peter


From steve at holdenweb.com  Sun May 22 16:19:10 2005
From: steve at holdenweb.com (Steve Holden)
Date: Sun, 22 May 2005 16:19:10 -0400
Subject: python24.zip
In-Reply-To: <x7zmunkunt.fsf@handshake.de>
References: <mailman.249.1116595092.8733.python-list@python.org>	<428e0cc3$0$29954$9b622d9e@news.freenet.de>	<x7hdgw2zqi.fsf@handshake.de>	<428F8901.5000300@jessikat.fsnet.co.uk>	<mailman.0.1116767713.21604.python-list@python.org>
	<x7zmunkunt.fsf@handshake.de>
Message-ID: <d6qpd1$917$1@sea.gmane.org>

Dieter Maurer wrote:
> Steve Holden <steve at holdenweb.com> writes on Sun, 22 May 2005 09:14:43 -0400:
> 
>>...
>>There are some aspects of Python's initialization that are IMHO a bit
>>too filesystem-dependent. I mentioned one in
>>
>>
>> http://sourceforge.net/tracker/index.php?func=detail&aid=1116520&group_id=5470&atid=105470
>>
>>
>>but I'd appreciate further support. Ideally there should be some means
>>for hooked import mechanisms to provide answers that are currently
>>sought from the filestore.
> 
> 
> There are such hooks. See e.g. the "meta_path" hooks as
> described by PEP 302.

Indeed I have written PEP 302-based code to import from a relational 
database, but I still don't believe there's any satisfactory way to have 
[such a hooked import mechanism] be a first-class component of an 
architecture that specifically requires an os.py to exist in the file 
store during initialization.

I wasn't asking for an import hook mechanism (since I already knew these 
to exist), but for a way to allow such mechanisms to be the sole import 
support for certain implementations.

regards
  Steve
-- 
Steve Holden        +1 703 861 4237  +1 800 494 3119
Holden Web LLC             http://www.holdenweb.com/
Python Web Programming  http://pydish.holdenweb.com/



From keir.robinson at gmail.com  Wed May 18 13:19:01 2005
From: keir.robinson at gmail.com (keirr)
Date: 18 May 2005 10:19:01 -0700
Subject: Is Python suitable for a huge, enterprise size app?
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>
	<1116432325.497438.64580@g49g2000cwa.googlegroups.com>
	<87br784hby.fsf@hector.domek>
Message-ID: <1116436741.557707.33590@g14g2000cwa.googlegroups.com>

>> I wouldn't, especially[1] if your thousands of business objects get
>> allocated/deallocated as the system runs.  Currently python's memory
>> usage can grow rapidly (from the perspective of the o/s) when large
>> numbers of objects are repeatedly created and freed.

>Isn't it true that in recent Python releases, one may replace the
>default GC with custom one?

Good point.  Indeed, since you have the source code you can change
anything you like. My warning was aimed at a specific situation,  and
was meant to be a 'keep this in mind' comment (I phrased it as "don't
use python" really because I expected the majority of the responses to
be "do use python", and thought a bit of balance would be helpful).

 As for a custom garbage collector, there has been a little discussion
about the gc code (on this group). My feeling is, if it was easy to
make it better someone would have done it already.  Note I don't say
it's impossible (particularly with the resources the op mentioned),
just not straight-forward.

Of course, I wouldn't use Java, but that's another story '-)

Cheers,

 Keir.



From tiissa at nonfree.fr  Mon May 30 14:50:42 2005
From: tiissa at nonfree.fr (tiissa)
Date: Mon, 30 May 2005 20:50:42 +0200
Subject: finding indices in a sequence of parentheses
In-Reply-To: <d7ebor$sij$00$1@news.t-online.com>
References: <u_KdneJ4tt9QuwffRVn-tg@comcast.com>
	<429a382d$0$15392$626a14ce@news.free.fr>
	<d7ebor$sij$00$1@news.t-online.com>
Message-ID: <429b6082$0$30053$626a14ce@news.free.fr>

Peter Otten wrote:
> tiissa wrote:
>>Disclaimer: not tested further than example above (but confident).
> 
> Not tested but confident should be an oxymoron for a programmer.

Not tested but confident is an oxymoron for mathemtaticians.
Programmers know better than that, they leave bugs in their code to have 
more work to do. ;)

OTOH, you're right. Matching parentheses cannot be done without a stack, 
that should have rung a bell.


From steven.bethard at gmail.com  Sun May 15 10:36:32 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Sun, 15 May 2005 08:36:32 -0600
Subject: Precision?
In-Reply-To: <4287565c$0$24223$636a15ce@news.free.fr>
References: <1116165159.269252.117830@g14g2000cwa.googlegroups.com>
	<4287565c$0$24223$636a15ce@news.free.fr>
Message-ID: <_u6dncgYpI7wwxrfRVn-jw@comcast.com>

tiissa wrote:
> Steffen Gl?ckselig wrote:
> 
>>>>> 1.0 + 3.0 + 4.6
>> 8.5999999999999996
>>
>> Ehm, how could I get the intuitively 'correct' result of - say - 8.6?
>> ;-)
> 
> You may find annex B of the python tutorial an interesting read:
> http://docs.python.org/tut/node16.html

Yes, the simplest way to get what you are expecting is probably:

py> print 1.0 + 3.0 + 4.6
8.6

The print statement calls str() instead of repr().  In many (most?) 
cases, this will print out what you expect it to.  But you should be 
aware of floating-point representation issues, and you should definitely 
read the reference above.  If you really do need precise decimal 
representation, you can use the 2.4 decimal.Decimal objects:

py> d.Decimal("1.0") + d.Decimal("3.0") + d.Decimal("4.6")
Decimal("8.6")

But if you just want a handy calculator, I'd go with print.

STeVe


From gsakkis at rutgers.edu  Wed May 18 17:08:57 2005
From: gsakkis at rutgers.edu (George Sakkis)
Date: 18 May 2005 14:08:57 -0700
Subject: Is Python suitable for a huge, enterprise size app?
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>
	<jmbsl2-opn.ln1@lairds.us>
	<1116442276.918194.194110@g44g2000cwa.googlegroups.com>
	<mailman.163.1116443300.8733.python-list@python.org>
Message-ID: <1116450537.626601.251990@g49g2000cwa.googlegroups.com>

"Ivan Van Laningham" wrote:

> What you're going to run into are two major stumbling blocks.  One,
> Python's got no credibility with management types unless the
> credibility's already there.  "Python?  Never heard of it.  Tell me
> about it.  ...   Oh, it's interpreted, is it?  Interesting."  You can
> see Python going down the sewer pipes, right on their faces.  Two,
> security.  "This python sounds pretty interesting.  Tell me about the
> security.  How can we prevent people from stealing our source code,
> which we just spent millions developing?  ...  Hmm, trust the
developers
> out there not to peek?  Oh, sure, let's use it."  (True, there are
ways
> around the second, but you're going to have to talk _very_ fast and
have
> ALL the answers before the management type gets to his/her office and
> shuts the door in your face and on your idea.)

Another issue that hasn't been mentioned so far is staffing. You can
find java programmers and software engineers a dime dozen, but for
python it will be harder. The alternative of teaching python to a team
for a week or a month is IMO far too risky when you're talking about
millions; even if they are able to read or code fast in a new language,
they won't have grasped the idioms and the good programming techniques,
so they will be essentially mentally translating from java/c++/c#,
whatever their programming mother tongue is. On the bright side, in
python you won't have to try as hard to pick the few good programmers
among a sea of average/inexperienced/clueless ones that you'll have for
java.

Personally, although I find nothing comes close to the clarity and
flexibility that python offers, in this case I would go with java, if
for nothing else, to be on the safe side. Think about it: if the
project fails (and that's quite likely for huge projects, not dark
humour) and you've done it in python, everyone will blame python and
you who chose it; java OTOH belongs in the realm of "standard business
practices", so in a way "it's ok" to screw up, you did what everybody
else does. Yet another failed java enterprise project, nothing to see
here.

An idea that perhaps takes the best of both worlds is use java for the
high level architecture and static type interfaces, and write the bulk
of the implementation in jython. PSF has awarded a grant to make jython
catch up with cpython, and that's good news for making the transition
from java to python smoother to a large audience. Others may have more
to say on the pros and cons of going with java/jython instead of
cpython, but it seems a good compromise to me.

George



From tim.golden at viacom-outdoor.co.uk  Wed May 11 09:12:01 2005
From: tim.golden at viacom-outdoor.co.uk (Tim G)
Date: 11 May 2005 06:12:01 -0700
Subject: HELP Printing with wxPython
References: <d5t4oj$sct$1@carabinieri.cs.interbusiness.it>
Message-ID: <1115817121.256876.49790@g49g2000cwa.googlegroups.com>

> Hello all, I'm trying hard to make possible to print some simple text
from
> python to the default printer using wxPython, after days of internet
> searches I found this page:
http://wiki.wxpython.org/index.cgi/Printing but
> is impossible to use this script even if I do exactly as said there.
I think
> the script is buggy or I am not able to use it, even if seems very
simple to
> use...
>
> Anyone can give me an hint on how to easily and simply print some
text? Is
> there a library ready to download and use? Something like
SendPrinter("some
> text\n")?

On the strict wxPython front, I can't help
you, but I might be able to offer some help.
Depends a little bit on how much you're tied
to wxPython and how much you need to be cross-platform.

Essentially, if you're on Windows (and have no need
to run on anything else) then consider some of the
solutions here:

http://tgolden.sc.sabren.com/python/win32_how_do_i/print.html

If you're on Unix / whatever with no need to do
anything else, then I'm sure there are straightforward
ways to push stuff to a printer. (Something using lpr
he thinks, hoping someone with real knowledge can chip
in).

If you *really* want to use wxPython for cross-platform
needs, or just because you think it's cleaner, then try
on the wxPython lists if you haven't already.

TJG



From exarkun at divmod.com  Wed May 11 09:18:08 2005
From: exarkun at divmod.com (Jp Calderone)
Date: Wed, 11 May 2005 13:18:08 GMT
Subject: Interactive shell for demonstration purposes
In-Reply-To: <9A28C052FF32734DACB0A288A3533991EBB7FD@vogbs009.gb.vo.local>
Message-ID: <20050511131808.15422.1639666886.divmod.quotient.32338@ohm>

On Wed, 11 May 2005 13:55:38 +0100, Tim Golden <tim.golden at viacom-outdoor.co.uk> wrote:
>[Brian Quinlan]
>|
>| Can anyone recommend a Python interactive shell for use in
>| presentations?
>|
>| Ideal characteristics (priority order):
>| o configurable font size
>| o full screen mode
>| o readline support
>| o syntax coloring
>|
>| I've tried ipython but, since it runs inside a console
>| window, and the
>| console window has a limited number of selectable fonts, it doesn't
>| work terribly well.
>|
>| I've seen presentations using some sort of PyGame implemented shell.
>| Does anyone have an information on that?
>
>Warning: untested response.
>
>Since I remembered that Michael Hudson had done such
>a thing once, I Googled and came across this:
>
>http://codespeak.net/py/current/doc/execnet.html
>
>which might get you started.
>

  execnet lets you easily run arbitrary Python code on remote hosts.  This doesn't seem too closely related to the OP's question, which seems directed at finding a pretty GUI to display the results of such execution.

  Jp


From exarkun at divmod.com  Thu May 19 20:09:50 2005
From: exarkun at divmod.com (Jp Calderone)
Date: Fri, 20 May 2005 00:09:50 GMT
Subject: Twisted an several CPUs
In-Reply-To: <7xhdgy6a0o.fsf@ruckus.brouhaha.com>
Message-ID: <20050520000950.559.751132464.divmod.quotient.4806@ohm>

On 19 May 2005 17:01:11 -0700, Paul Rubin <"http://phr.cx"@nospam.invalid> wrote:
>Jp Calderone <exarkun at divmod.com> writes:
>>   Distributing load across multiple machines scales better than
>> distributing it over multiple CPUs in a single machine.  If you have
>> serious scalability requirements, SMP is a minor step in the wrong
>> direction (unless you're talking about something like 128-way SMP on
>> a supercomputer :)
>
>See PoSH:
>
>  http://poshmodule.sourceforge.net/
>
>The performance gain from multiple CPU's and shared memory is quite real.
>I've been wanting for quite a long time to hack up a web server that
>uses this stuff.

  "performance gain" != "scaling"

  That said, PoSH is kind of an interesting idea.  However, I prefer to share data between processes, instead of PyObject*'s: it performs better, wastes less space, incurs less complexity in the IPC mechanism, and interoperates with non-Python tools.

  Jp


From steven.bethard at gmail.com  Mon May 16 14:03:24 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Mon, 16 May 2005 12:03:24 -0600
Subject: Applying a function to a 2-D numarray
In-Reply-To: <7flh81d00feulgkdfdrh69rbgp4v36mqtl@4ax.com>
References: <nb7h81hqrgbd2kofg48tlt8oaicv34iuh9@4ax.com>
	<I_Sdnfv3isSrThXfRVn-vQ@comcast.com>
	<7flh81d00feulgkdfdrh69rbgp4v36mqtl@4ax.com>
Message-ID: <uIednQfZNpL1fRXfRVn-vQ@comcast.com>

Matt Feinstein wrote:
> On Mon, 16 May 2005 11:07:06 -0600, Steven Bethard
> <steven.bethard at gmail.com> wrote:
> 
> 
> 
>>I must be missing something, because the simplest possible thing seems 
>>to work for me:
>>
>>py> import numarray as na
>>py> def plus1(arr):
>>...     return arr + 1
>>...
>>py> def apply_func(arr, f):
>>...     return f(arr)
>>...
>>py> a = na.arange(20, shape=(4, 5))
>>py> a
>>array([[ 0,  1,  2,  3,  4],
>>       [ 5,  6,  7,  8,  9],
>>       [10, 11, 12, 13, 14],
>>       [15, 16, 17, 18, 19]])
>>py> apply_func(a, plus1)
>>array([[ 1,  2,  3,  4,  5],
>>       [ 6,  7,  8,  9, 10],
>>       [11, 12, 13, 14, 15],
>>       [16, 17, 18, 19, 20]])
>>
>>Is this not what you wanted?
> 
> 
> The problem is that I chose an example function that's too simple.
> Non-trivial functions aren't so polymorphic, unfortunately.

Can you give an example of what you really want to do?  Probably there 
are numarray functions that you can use.  In general, you'll do better 
applying a sequence of numarray functions than operating element-wise on 
an array and converting it from a list back to an array...

STeVe


From rkern at ucsd.edu  Fri May 13 09:44:46 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Fri, 13 May 2005 06:44:46 -0700
Subject: doc tags?
In-Reply-To: <4284AE2A.4070106@syscononline.com>
References: <mailman.23.1115990661.29328.python-list@python.org>
	<4284AE2A.4070106@syscononline.com>
Message-ID: <d62ahh$iif$1@sea.gmane.org>

Larry Bates wrote:
> In python they are called decorators, but I've never had a
> need to use them myself, but then I'm a little old fashioned.

Decorators only work on function and method definitions. I don't think 
that's what Wolfram is referring to.

> Larry Bates
> 
> Wolfram Kriesing wrote:
> 
>>i was already searching and remember i had seen something like "its not needed".
>>
>>Anyway, are there any doc tags, like in Java/PHPDoc etc, where you can
>>describe parameters (@param[eter]), return values (@ret[urn]),
>>attributes (@var), references (@see), etc?
>>
>>I guess I have just not found the link to the last flameware about it :-))

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From bokr at oz.net  Thu May 12 03:07:44 2005
From: bokr at oz.net (Bengt Richter)
Date: Thu, 12 May 2005 07:07:44 GMT
Subject: Interactive shell for demonstration purposes
References: <1115814028.259365.98710@g49g2000cwa.googlegroups.com>	<mailman.347.1115815769.29826.python-list@python.org>
	<du78y2l5137.fsf@lehtori.cc.tut.fi>
	<mailman.359.1115821284.29826.python-list@python.org>
Message-ID: <4282ff44.1317299666@news.oz.net>

On Wed, 11 May 2005 16:21:19 +0200, Brian Quinlan <brian at sweetapp.com> wrote:

>Ville Vainio wrote:
>> Hmm, do you consider the fonts in a console window unreadable? 
>
>In fullscreen mode, yes (you get no choice of font size in Windows XP).
>In Windowed mode you still only get a limited font selection (only two 
>fonts and only a few type sizes [most of which are small]).
>
>> I've
>> given a few presentations using ipython on win32 and it worked alright
>> - but I suppose the projector quality is a factor here...
>
>I'll get by but I was hoping for something better.
>
If you make your console 96 wide and set the font to Lucida Console Bold 24point,
it will probably expand to near full screen on 1024x768. You can set the scroll buffer
to a couple hundred lines and adjust console widow height to suit. Use the properties
from the system icon, or get there by Alt-Space P etc.
You can change the fg/bg colors also, though not a big selection either. I'm not a fan of idle
for my system (NT4) though it looks nice enough and has more fonts to choose from.

Regards,
Bengt Richter


From zanesdad at bellsouth.net  Tue May  3 10:51:47 2005
From: zanesdad at bellsouth.net (Jeremy Jones)
Date: Tue, 03 May 2005 10:51:47 -0400
Subject: [JOB] The Weather Channel in Atlanta, GA
Message-ID: <42779003.3050103@bellsouth.net>

is looking for two software developers to develop tests (written in
Python) to test our internally developed applications for the cable
tier.  There is a reference to the job on the Python Job Board
(http://www.python.org/Jobs.html).  Anyone interested can email me at
zanesdad at bellsouth dot net or jmjones at weather dot com.


Jeremy Jones


From jeffelkins at earthlink.net  Sat May  7 12:57:06 2005
From: jeffelkins at earthlink.net (jeff elkins)
Date: Sat, 7 May 2005 16:57:06 +0000
Subject: Newbie: saving dialog variables
In-Reply-To: <pan.2005.05.07.16.39.16.178873@jerf.org>
References: <mailman.147.1115486676.29826.python-list@python.org>
	<mailman.149.1115494990.29826.python-list@python.org>
	<pan.2005.05.07.16.39.16.178873@jerf.org>
Message-ID: <200505071657.06204.jeffelkins@earthlink.net>

On Saturday 07 May 2005 04:39 pm, Jeremy Bowers wrote:
> OK, I can't quite directly run this, but assuming you're trying to get the
> user to enter some text into the text control, you should be able to add
>           print dlg.venttypeText.GetValue()
> to print what the user entered; this comes after the try: finally: (i.e.,
> on the same indentation as "dlg = vents.vents(self)").

Thanks!  That did the trick.

Jeff


From aahz at pythoncraft.com  Mon May  2 13:44:03 2005
From: aahz at pythoncraft.com (Aahz)
Date: 2 May 2005 10:44:03 -0700
Subject: Use case for multiple inheritance (was Re: MRO problems with diamond
	inheritance?)
References: <d53jqq$b88$1@newsg4.svr.pol.co.uk>
	<1115025031.721431.76320@o13g2000cwo.googlegroups.com>
Message-ID: <d55ot3$br3$1@panix2.panix.com>

In article <1115025031.721431.76320 at o13g2000cwo.googlegroups.com>,
Michele Simionato <michele.simionato at gmail.com> wrote:
>
>BTW, what it your use case? I have yet to see a single compelling use
>case for multiple inheritance, so I am curious of what your design is.

Dunno whether you'd call it compelling, but my current company uses
multiple inheritance to compose a mega-class with different methods
depending on what the mega-class's capabilities are.  It's a pretty
baroque design, admittedly, but I'm not sure how I'd do it differently
from scratch.  We've even implemented our own super() for cooperative
method calls with classic classes.

(This application was started in Python 1.4; we're slowly refactoring
it, but we're still using Python 2.2/2.3 -- we didn't get rid of 1.5.2
until last July.  Now you know why I've gotten even more conservative
since I started this job last June...)
-- 
Aahz (aahz at pythoncraft.com)           <*>         http://www.pythoncraft.com/

"It's 106 miles to Chicago.  We have a full tank of gas, a half-pack of
cigarettes, it's dark, and we're wearing sunglasses."  "Hit it."


From EP at zomething.com  Sun May 29 03:39:41 2005
From: EP at zomething.com (EP)
Date: Sat, 28 May 2005 23:39:41 -0800
Subject: the problem with cgi
In-Reply-To: <1117250714.387429.73450@g44g2000cwa.googlegroups.com>
References: <1117250714.387429.73450@g44g2000cwa.googlegroups.com>
Message-ID: <20050528233941.480946300.EP@zomething.com>

> Has anyone seen that problem with running a python cgi script in a
> server?
> It takes you to myspace.com/redmartian or something. Anyway, does
> anyone know when this problem will be fixed?


Xah Lee is working on it.



From mefjr75 at hotmail.com  Mon May  2 10:29:51 2005
From: mefjr75 at hotmail.com (M.E.Farmer)
Date: 2 May 2005 07:29:51 -0700
Subject: Can't get compression in Python zip script.
In-Reply-To: <mailman.23.1115041639.6583.python-list@python.org>
References: <mailman.23.1115041639.6583.python-list@python.org>
Message-ID: <1115044191.404623.306480@z14g2000cwz.googlegroups.com>

zipfile.ZipFile.__init__(self, filename, mode='r', compression=0)
    Open the ZIP file with mode read "r", write "w" or append "a".

>import zipfile
>zip = zipfile.ZipFile('<path/zipfilename.zip>', 'w', compression=1)
>zip.write('<path/filename.txt>')
>zip.close()

Warning about zipfile module:
In Python2.2 this is true, maybe 2.3 and 2.4 also have some problems.
You cannot remove/delete an entry from a zipfile with Python but you
can read and write it!
To do it you will have to make a new zip file that contains all the
files you want to keep and then overwrite the original.
You can have mulitple files with the same name!
Obviusly that can cause problems.
This can be very confusing.
hth,
M.E.Farmer



From roy at panix.com  Sun May 29 22:05:04 2005
From: roy at panix.com (Roy Smith)
Date: Sun, 29 May 2005 22:05:04 -0400
Subject: Case Sensitive, Multiline Comments
References: <1117137316.140791.210430@g14g2000cwa.googlegroups.com>
	<z5adnQMsOLiL7AffRVn-hQ@comcast.com>
Message-ID: <roy-D01535.22050429052005@reader1.panix.com>

In article <z5adnQMsOLiL7AffRVn-hQ at comcast.com>, D H <a at b.c> wrote:

> Elliot Temple wrote:
> > Hi I have two questions.  Could someone explain to me why Python is
> > case sensitive?  I find that annoying.  
> 
> I do too.  As you've found, the only reason is because it is, and it is 
> too late to change (it was even too late back in 1999 when it was 
> considered by Guido).  I guess the most popular case-insensitive 
> language nowadays is visual basic (and VB.NET).
> 
>  > Also, why aren't there
> > multiline comments?  Would adding them cause a problem of some sort?
> 
> Again, just because there aren't and never were.  There is no technical 
> reason (like for example a parsing conflict) why they wouldn't work in 
> python.  That's why most python editors have added a comment section 
> command that prepends # to consecutive lines for you.

If it really bothers you that there's no multi-line comments, you could 
always use triple-quoted strings.

I actually don't like multi-line comments.  They're really just syntactic 
sugar, and when abused, they can make code very difficult to understand.  
Just wait until the day you're trying to figure out why some C++ function 
is behaving the way it is and you don't notice that a 50-line stretch of 
code is commented out with /* at the top and */ at the bottom.


From skip at pobox.com  Sat May  7 10:14:50 2005
From: skip at pobox.com (Skip Montanaro)
Date: Sat, 7 May 2005 09:14:50 -0500
Subject: New Python regex Doc (was: Python documentation moronicities)
In-Reply-To: <1115423751.016177.250650@o13g2000cwo.googlegroups.com>
References: <1113301533.054410.203710@z14g2000cwz.googlegroups.com>
	<mailman.1813.1113355346.1799.python-list@python.org>
	<1113856843.023012.165500@l41g2000cwc.googlegroups.com>
	<1113908069.264676.207090@g14g2000cwa.googlegroups.com>
	<1115328523.852744.110390@f14g2000cwb.googlegroups.com>
	<1115423751.016177.250650@o13g2000cwo.googlegroups.com>
Message-ID: <17020.52570.98527.816737@montanaro.dyndns.org>


    Xah> I don't know what kind of system is used to generate the Python
    Xah> docs, but it is quite unpleasant to work with manually, as there
    Xah> are egregious errors and inconsistencies.

The main Python documentation is written in LaTeX.  I believe most, if not
all, HTML is generated by latex2html.  I suspect most of the HTML cruftiness
arises from latex2html.

Skip




From miki at spam_me.net  Fri May 20 11:46:07 2005
From: miki at spam_me.net (michelle)
Date: Fri, 20 May 2005 08:46:07 -0700
Subject: Cascading menus with Tk
In-Reply-To: <mailman.248.1116594814.8733.python-list@python.org>
References: <uaGdnWyAsaM1KhDfRVn-sw@comcast.com>
	<mailman.248.1116594814.8733.python-list@python.org>
Message-ID: <GvOdnYq0qbXemxPfRVn-vw@comcast.com>

Martin Franklin wrote:
> michelle wrote:
> 
>> Hi all,
>>
>> I am new to Tk, or Python GUI programming and I seem to be stuck.  I
>> have looked about for help with Tk GUIs, but everything seems so terse
>> or incomplete?? I have been mostly using the "Introduction to Tkinter"
>> by Fredrik Lundh
>> (http://www.pythonware.com/library/tkinter/introduction/index.htm)
>>
>> What I am trying to do is add cascading menus to a Tk menu widget like:
>>
>> File
>> New...
>> ---> Router
>> ---> Firewall
>> Open
>> ----
>> Exit
>>
>> This seems simple enough, but I can't get it to work...the two
>> "add_cascade" methods (shown below), if used, run an endless loop that
>> is difficult to break:
>>
>> mainWindow = Tk()
>> mainWindow.title("myApp")
>>
>> # create a menu
>> menubar = Menu(mainWindow)
>> mainWindow.config(menu=menubar)
>>
>> filemenu = Menu(menubar)
>> menubar.add_cascade(label="File", menu=filemenu)
>> filemenu.add_command(label="New...")
> 
> 
> I think you want these two options to be in a cascading menu like so:
> 
> newmenu = Menu(filemenu)
> filemenu.add_cascade(label="New...", menu=newmenu)
> 
> newmenu.add_command(label="Router")
> newmenu.add_command(label="Firewall")
> 
> 
> 
>> filemenu.add_cascade(label="Router")
>> filemenu.add_cascade(label="Firewall")
>> filemenu.add_command(label="Open...", command = openFileDialog)
>> filemenu.add_separator()
>> filemenu.add_command(label="Exit", command = mainWindow.destroy)
>>
>> helpmenu = Menu(menubar)
>> menubar.add_cascade(label="Help", menu=helpmenu)
>> helpmenu.add_command(label="Online Help")
>> helpmenu.add_command(label="Help on the web")
>> helpmenu.add_separator()
>> helpmenu.add_command(label="About...", command = openAboutBox)
>>
>> Any ideas??
>>
>> Miki
> 
> 
> Martin
> 
Thank you, your code worked perfectly....

Miki


From stewart.midwinter at gmail.com  Sun May  8 21:06:31 2005
From: stewart.midwinter at gmail.com (Stewart Midwinter)
Date: Sun, 8 May 2005 19:06:31 -0600
Subject: how to calc the difference between two datetimes?
Message-ID: <d4c0d48005050818064a87b761@mail.gmail.com>

After an hour of research, I'm more confused than ever. I don't know
if I should use the time module, or the eGenix datetime module. Here's
what I want to do:  I want to calculate the time difference (in
seconds would be okay, or minutes), between two date-time strings.

so: something like this:
time0 = "2005-05-06 23:03:44"
time1 = "2005-05-07 03:03:44"

timedelta = someFunction(time0,time1)
print 'time difference is %s seconds' % timedelta.

Which function should I use?

confusedly yours,
-- 
Stewart Midwinter
stewart at midwinter.ca
stewart.midwinter at gmail.com
Skype: midtoad


From dan at dontspammecauseidontlikit.com  Wed May  4 03:36:43 2005
From: dan at dontspammecauseidontlikit.com (Dan)
Date: Wed, 04 May 2005 15:36:43 +0800
Subject: Mod_python
References: <1115173372.255405.214330@o13g2000cwo.googlegroups.com>
Message-ID: <khug71drpgvmqlsdud7ufh4dmgvtq2pdjg@4ax.com>

On 3 May 2005 19:22:52 -0700, "Gensek" <fusionary_2000 at yahoo.com>
wrote:

>I want to use mod_python, but I'm having trouble. Here's what I have in
>my config:

I've been using cherrypy (cherrypy.org) instead of apache with
mod_python.  In a lot of cases, apache is overkill.  With cherrypy you
can build a web application with a built in web server. It might be
worth a look, it's reasonably easy to use.

Dan




From darran.edmundson at anu.edu.au  Sat May 28 08:01:02 2005
From: darran.edmundson at anu.edu.au (Darran Edmundson)
Date: Sat, 28 May 2005 22:01:02 +1000
Subject: smart logging and the "inspect" module ...
Message-ID: <d79mhu$t1p$1@otis.netspace.net.au>


I was playing around with the inspect module the other day
trying to write a quick and dirty "smart" logger.  By this I mean
that writing a message to the global log would also yield some
info about the calling scope.  If you look at my function "test"
below, I'd ideally like log messages:

foo.py:test, "message 1"
foo.py:Foo.__init__, "message 2"
foo.py:Foo.bar, "message 3"

For the life of me I can't figure out how to get this info without
resorting to ridiculous things like parsing the source code (available
via inspect.stack.

Any help would be much appreciated - my unit tests are failing
on this at the moment ;-)

Cheers,
Darran.

#------------ foo.py ---------------------------------

import inspect

class Log:

     def __init__(self):
         pass

     def write(self, msg):
         print 
"------------------------------------------------------------"
         print msg
         print 
"------------------------------------------------------------"
         cframe, cmodule, cline, cfunction, csrc, tmp = inspect.stack()[1]
         print inspect.stack()

         # I want to determine if cfunction is a regular function or a 
class method.
         # If the latter, what is the name of the class?

         del cframe


def test():

     log = Log()
     log.write('message 1)

     class Foo:
         def __init__(self):
             log.write('message 2')

         def bar(self):
             log.write('message 3')

     f = Foo()
     f.bar()


test()

#--------------------- end of foo.py --------------


From cfbolz at gmx.de  Mon May 16 11:51:00 2005
From: cfbolz at gmx.de (Carl Friedrich Bolz)
Date: Mon, 16 May 2005 17:51:00 +0200
Subject: Optimise Europython competition
In-Reply-To: <mailman.31.1116220889.8733.python-announce-list@python.org>
References: <mailman.31.1116220889.8733.python-announce-list@python.org>
Message-ID: <4288C164.9040005@gmx.de>

Jacob Hallen wrote:
> 2. A track should be continuous. Each track that is continuous gives you
>    10 points.

What exactly do you mean by "continuous track"?

Regards

Carl Friedrich


From mwm at mired.org  Tue May  3 12:25:23 2005
From: mwm at mired.org (Mike Meyer)
Date: Tue, 03 May 2005 11:25:23 -0500
Subject: So many things that need to be decided....
References: <G3Ade.1022$fF6.12717@news1.mts.net>
	<86sm1584l4.fsf@guru.mired.org>
	<zuMde.1076$fF6.14053@news1.mts.net>
Message-ID: <868y2w8efg.fsf@guru.mired.org>

"Heather Stovold" <h_stovold at hotmail.com> writes:

>> > I've decided on DrPython for the Editor....
>>
>> An editor for each language? Is that the kind of tower you get when
>> you start using IDEs? I just kept right on using the same text editor
>> I'd been using for the last 20 (now 30) years.
> I have programmed in the past with a plain text editor too did it for
> years. - but I much prefer programming with tools that have syntax coloring,
> code completion, and the ability to run from the editor. Debugging tools are
> a bonus too.

I've got syntax coloring. I'm not sure what you mean "run from the
editor". I can send functions/classes to an interpreter running in the
editor. I can run programs either via the editor command to run
programs, or from a shell running in the editor. I have no idea
whether or not the editor will do code completion. The only
autocompletion facilities I use while editing (as opposed to issuing
commands or looking for help) is looking up things in my email address
book.


>> > I still need to decide on a database........   I've really only used
> Access,
>> > and my SQL skills aren't that great.  It would also need to be free....
>> > Any suggestions??
>> Access is just a way of talking to a database. Which is what most
>> Python database tools are - ways to talk to a back-end database.  If
> MS Access is also a file-based relational-database program in Windows, which
> you can access the database files either through the program, or the
> database directly through other tools - including most MS programming
> languages.

IIRC - and I may not - access uses the "Jet" (name may be obsolete)
database engine for it's file-based relational database access.

>> That won't depend on the database. It will depend on what you want
>> your applications to do when it comes to generating reports - assuming
>> you generate any at all.
> Some reports are a definate requirement.

How will they be displayed? If you want to print them, it will depend
on the platform. If you want to display them in a window, it'll depend
on the GUI toolkit.

   <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From mj at zopatista.com  Thu May  5 07:36:07 2005
From: mj at zopatista.com (Martijn Pieters)
Date: Thu, 05 May 2005 13:36:07 +0200
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <d5cabi$lqa$1@sea.gmane.org>
References: <d4u60o$akh$1@news2.netvision.net.il>	<mailman.47.1114818531.14961.python-list@python.org>	<1114924100.296223.114020@g14g2000cwa.googlegroups.com>	<1114927892.321086.60190@z14g2000cwz.googlegroups.com>	<zX%ce.78213$ft1.5056576@phobos.telenet-ops.be>	<Zj2de.78345$a42.5091422@phobos.telenet-ops.be>	<8764y29x3m.fsf@uwo.ca>	<877jihc7qv.fsf@uwo.ca>	<4279366B.6070800@zopatista.com>	<mailman.24.1115246239.29826.python-list@python.org>	<1115268997.066368.208690@o13g2000cwo.googlegroups.com>
	<d5cabi$lqa$1@sea.gmane.org>
Message-ID: <427A0527.1060409@zopatista.com>

Michael Spencer wrote:
> Dan Bishop wrote:
> > You mean there's a hint in that XML-RPC fault?
>
> No - the hint is associated with another error message

Assuming a web browser (firefox in my case) is being used. ;) I got no
error message when I retrieved that URL with urllib and examined the
result..

Martijn Pieters
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From amichail at gmail.com  Sun May  1 06:21:09 2005
From: amichail at gmail.com (Amir  Michail)
Date: 1 May 2005 03:21:09 -0700
Subject: editor for shelve files
Message-ID: <1114942869.144312.253720@o13g2000cwo.googlegroups.com>

Hi,

Is there a program for editing shelve databases?

Amir



From leszczynscyATnospam.yahoo.com.nospam  Fri May 27 18:59:43 2005
From: leszczynscyATnospam.yahoo.com.nospam (Andy Leszczynski)
Date: Fri, 27 May 2005 17:59:43 -0500
Subject: write to the same file from multiple processes at the same time?
In-Reply-To: <e3617$429713d7$3eb01f24$9096@news.flashnewsgroups.com>
References: <e3617$429713d7$3eb01f24$9096@news.flashnewsgroups.com>
Message-ID: <k8mdnW8-pNjLOArfRVn-2g@comcast.com>

gabor wrote:
> the problem is:
> what happens if 2 users invoke the cgi at the same time?

Would BerkleyDB support that?


From jstroud at mbi.ucla.edu  Mon May  2 21:11:54 2005
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Mon, 2 May 2005 18:11:54 -0700
Subject: Inspect Python Classes for instance data information
In-Reply-To: <1115081401.464719.142070@o13g2000cwo.googlegroups.com>
References: <1115081401.464719.142070@o13g2000cwo.googlegroups.com>
Message-ID: <200505021811.54595.jstroud@mbi.ucla.edu>

Its not obvious what you are asking here. Try inheriting from object:

>>> class song(object):
...     def __init__(self, name, artist, album, published):
...         self.name = name
...         self.artist = artist
...         self.album = album
...         self.published = published
...     def build(self, name, artist, album, published):
...         self.name = name
...         self.artist = artist
...         self.album = album
...         self.published = published
...
>>> s = song("12:51", "The Strokes", "Room on Fire", 2005)
>>> dir(s)
['__class__', '__delattr__', '__dict__', '__doc__', '__getattribute__', 
'__hash__', '__init__', '__module__', '__new__', '__reduce__', 
'__reduce_ex__', '__repr__', '__setattr__', '__str__', '__weakref__', 
'album', 'artist', 'build', 'name', 'published']
>>> s.__class__
<class '__main__.song'>
>>> song
<class '__main__.song'>
>>> s.__dict__
{'album': 'Room on Fire', 'published': 2005, 'name': '12:51', 'artist': 'The 
Strokes'}
>>> dir(s.__class__)
['__class__', '__delattr__', '__dict__', '__doc__', '__getattribute__', 
'__hash__', '__init__', '__module__', '__new__', '__reduce__', 
'__reduce_ex__', '__repr__', '__setattr__', '__str__', '__weakref__', 
'build']
>>> s.build
<bound method song.build of <__main__.song object at 0x403ba10c>>


On Monday 02 May 2005 05:50 pm, so sayeth Tim Henderson:
> Hello
>
> I want to creat a program that can inspect a set of classes that i have
> made and spit out a savable version of these classes. To do this I need
> to be able to inspect each class and get all of its instance data as
> well as information about a particular meathod. This is what i want it
> to do:
>
>
> class song:
>     def __init__(self, name, artist, album, published):
>         self.name = name
>         self.artist = artist
>         self.album = album
>         self.published = published
>     def build(self, name, artist, album, published):
>         self.name = name
>         self.artist = artist
>         self.album = album
>         self.published = published
>
> #now what i want to do with this dummy class
> s = song("12:51", "The Strokes", "Room on Fire", 2005)
> print getTextVersion(s)
>
> <class>
>     <name>song</name>
>     <data>
>         <attribute>
>             <date_type>string</data_type>
>             <value>12:51</value>
>             <attribute_name>name</attribute_name>
>         </attribute>
>         <attribute>
>             <date_type>string</data_type>
>             <value>The Strokes</value>
>             <attribute_name>artist</attribute_name>
>         </attribute>
>         <attribute>
>             <date_type>string</data_type>
>             <value>Room on Fire</value>
>             <attribute_name>album</attribute_name>
>         </attribute>
>         <attribute>
>             <date_type>int</data_type>
>             <value>2005</value>
>             <attribute_name>published</attribute_name>
>         </attribute>
>     </data>
>     <build_parameter_order>name artist album
> published</build_parameter_order>
> </class>
>
>
> I have no idea how to do the inspection part of this little problem. I
> could just have each class define its own meathod to convert to this
> format, but that would be a lot of work when i could just make one
> class that solves the problem for all classes. Is there a way to do
> this?
>
> cheers
> ---
> Tim Henderson
> mail me: tim.tadh at gmail.com

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From fredrik at pythonware.com  Wed May 11 14:02:25 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Wed, 11 May 2005 20:02:25 +0200
Subject: Problems with csv module
References: <d5sngn$l4$03$1@news.t-online.com><mailman.338.1115809896.29826.python-list@python.org><d5spph$ktm$01$1@news.t-online.com><a4r381p3s5uhud58tvd2m2nod1ebmo48u0@4ax.com><d5tc55$q3e$1@sea.gmane.org>
	<17026.15830.303909.792010@montanaro.dyndns.org>
Message-ID: <d5tgtc$aur$1@sea.gmane.org>

Skip Montanaro wrote:

>     Fredrik> does the CSV format even support Unicode-encoded data streams?
>
> Based on the requests I've seen here and on the csv at mojam.com mailing list,
> it appears people are certainly generating CSV files which contain Unicode-
> encoded data.

in what encodings?

is the encoding specified inside the file?  if so, how?

(it should be noted that the phrase "Unicode-encoded data" that I
used doesn't make much sense, even in the original context.  what
I meant to say was that CSV, as far as I know, isn't defined as a
stream of Unicode character, but rather as a stream of bytes in an
ASCII-compatible encoding.  this means that you can use e.g. ISO-
8859-1 or UTF-8 for string values, but not that you can encode the
whole thing as, say UTF-16 or UCS-4).

</F>





From franz.steinhaeusler at utanet.at  Tue May  3 11:17:54 2005
From: franz.steinhaeusler at utanet.at (Franz Steinhaeusler)
Date: Tue, 03 May 2005 17:17:54 +0200
Subject: wxpython on cygwin for drPython - ImportError: No module named
	_core_
References: <d581p2$1ec$1@newshost.mot.com>
Message-ID: <g65f71hqkckpnhl6rht49oakpatn7kqhho@4ax.com>

On Tue, 3 May 2005 10:26:52 -0400, "Stephane Roy"
<stephane.roy at motorola.com> wrote:

>Hi,
>
>Did someone installed and used successfully drPython on Cygwin? The
>installation requires
>wxpython. I tried many different alternatives (source, binary, etc) but so
>far the best I get is the following.
>
>Traceback (most recent call last):
>  File "drpython.py", line 45, in ?
>    import wx, wx.stc
>  File "/lib/python2.4/Lib/site-packages/wx-2.6-msw-unicode/wx/__init__.py",
>line 42, in ?
>    from wx._core import *
>  File "/lib/python2.4/Lib/site-packages/wx-2.6-msw-unicode/wx/_core.py",
>line 4, in ?
>    import _core_
>ImportError: No module named _core_
>
>Thanks in advance
>St?phane
>
>Don't take life too seriously, you won't get out of it alive!
>

Hm, I suspect, the demo is also not working(?)

Apparantly a problem of installing wxPython.
I saw once one posting in the wxpython-user mailing list.
You could try to ask there.

Sorry for not having a better answer.

-- 
Franz Steinh?usler
http://drpython.sourceforge.net/
http://mitglied.lycos.de/drpython/


From dalke at dalkescientific.com  Sat May 21 00:56:01 2005
From: dalke at dalkescientific.com (Andrew Dalke)
Date: Sat, 21 May 2005 04:56:01 GMT
Subject: performance of Nested for loops
References: <1116628510.816306.31390@g43g2000cwa.googlegroups.com>
Message-ID: <pan.2005.05.21.04.55.59.327540@dalkescientific.com>

querypk wrote:
> Is there a better way to code nested for loops as far as performance is
> concerned.
> 
> what better way can we write to improve the speed.
> for example:
> N=10000
> for i in range(N):
>    for j in range(N):
>        do_job1
>    for j in range(N):
>        do_job2

For this case compute the range once

range_10000 = range(10000)
for i in range_10000:
  for j in range_10000:
    do_job1()
  for j in range_10000:
    do_job2()

Using xrange(10000) may be faster but you would need to test
that out for your case.

				Andrew
				dalke at dalkescientific.com



From richardjones at optushome.com.au  Thu May 19 18:27:28 2005
From: richardjones at optushome.com.au (richard)
Date: Fri, 20 May 2005 08:27:28 +1000
Subject: problem uploading ZIP file tp PyPI
References: <spsb81hia4m5n136tp0sgpuldd0gon555m@4ax.com>
	<4287fd5e$0$4655$afc38c87@news.optusnet.com.au>
	<1116210182.148076.159110@g44g2000cwa.googlegroups.com>
	<42888e05$0$5180$afc38c87@news.optusnet.com.au>
	<c18h81pj5bsi149rknvjemq2v8vo8794ei@4ax.com>
Message-ID: <428d12d0$0$8122$afc38c87@news.optusnet.com.au>

John Machin wrote:
> On Mon, 16 May 2005 22:11:49 +1000, richard
>>John Machin wrote:
>>> setup.py sdist --format=zip
>>
>>Try without the --format arg. The code is being too paranoid.
> 
> Result: (A) produces a zip file with only minor differences
> (presumably a timestamp):

Oh, so even without --format, a ZIP source dist file is produced anyway? If
this is the case, please file a bug against PyPI.


>> The code is being too paranoid
> 
> Which code (distutils or PyPI server) is being paranoid about what???

The PyPI server code, which attempts to make sure people aren't uploading
pr0n.


    Richard



From photos at conversent.net  Wed May 18 22:20:19 2005
From: photos at conversent.net (Dave Rose)
Date: Thu, 19 May 2005 02:20:19 +0000 (UTC)
Subject: Byte-operations.
Message-ID: <loom.20050519T040152-792@post.gmane.org>

I hope someone can please help me.  A few months ago, I found a VBS file, 
MonitorEDID.vbs on the internet.  It is great in that it will extract from the 
registry of Windows the serial number of the attached monitor. (System 
Administration / PC Inventory usage is obvious)

Standalone, it works fine. However, I'd like to integrate it with other system 
interrogations via Tim Golden's WMI and Marc Hammonds Win32all to get RAM, HD 
size, CPU, PC Serial Number, etc and to also take that info and toss into a 
lite database, such as KirbyBase.

However, my Python is limited.  I've gotten the first half of the program 
translated (I believe, I haven't done exhaustive testing).

So, the data is stuck in a dictionary.  A clipping is shown here:

{0: '\x00\xff\xff\xff\xff\xff\xff\x00$M\x93!\x01\  <-SNIP-> '}

Anyway, the functions from VBS I don't know how to translate to Python are:

#        location(0)=mid(oRawEDID(i),0x36+1,18)
#        location(1)=mid(oRawEDID(i),0x48+1,18)
#
#        #you can tell if the location contains a serial number if it starts 
with 0x00 00 00 ff
#        strSerFind=chr(0x00) & chr(0x00) & chr(0x00) & chr(0xff)
#
#        #or a model description if it starts with 0x00 00 00 fc
#        strMdlFind=chr(0x00) & chr(0x00) & chr(0x00) & chr(0xfc)


#            #the week of manufacture is stored at EDID offset 0x10
#            tmpmfgweek=ord(mid(oRawEDID(i),0x10+1,1))


#            #store it in month/year format 
#            if tmpEDIDMajorVer < 255-48 and tmpEDIDRev < 255-48 :
#                tmpver=chr(48+tmpEDIDMajorVer) & "." & chr(48+tmpEDIDRev)
#            else:
#                tmpver="Not available"


#            if (Byte1 and 16) > 0:
#                Char1=Char1+4


If someone can help me understand what to do with these types of commands, I'd 
be much appreciative.  Once it's translated, I'd be happy to share this!


Thanks!
Dave




From skip at pobox.com  Sun May 15 23:09:18 2005
From: skip at pobox.com (Skip Montanaro)
Date: Sun, 15 May 2005 22:09:18 -0500
Subject: question about the id()
In-Reply-To: <428809fc.62d7a08a.1cfe.ffffd7ef@mx.gmail.com>
References: <428809fc.62d7a08a.1cfe.ffffd7ef@mx.gmail.com>
Message-ID: <17032.3806.583757.806221@montanaro.dyndns.org>


    kyo> Can someone explain why the id() return the same value, and why
    kyo> these values are changing?

Instance methods are created on-the-fly.  In your example the memory
associated with the a.f bound method (not the same as the unbound method
A.f) is freed before you reference a.g.  That chunk of memory just happens
to get reused for the bound method associated with a.g.  Here's a
demonstration:

    % python
    Python 2.5a0 (#77, May 14 2005, 14:47:06) 
    [GCC 3.3 20030304 (Apple Computer, Inc. build 1671)] on darwin
    Type "help", "copyright", "credits" or "license" for more information.
    >>> class A(object):
    ...   def f(): pass
    ...   def g(): pass
    ... 
    >>> a = A()
    >>> x = a.f
    >>> y = a.g
    >>> id(x)
    17969240
    >>> id(y)
    17969440
    >>> id(a.f)
    17969400
    >>> id(a.g)
    17969400

Skip


From Florian.Lindner at xgm.de  Mon May  2 07:55:09 2005
From: Florian.Lindner at xgm.de (Florian Lindner)
Date: Mon, 02 May 2005 13:55:09 +0200
Subject: Comparision of GUI framworks
Message-ID: <d554en$rm7$02$1@news.t-online.com>

Hello,
I've read the chapter in the Python documentation, but I'm interested in a a
more in-depth comparision. Especially regarding how pythonic it is and how
well it performs and looks under Windows.
I've some C++ experiences with Qt, so I'm very interested to have PyQt
compared to wxWindows and Tk. How fast does PyQt catches up with the
versiones released from Trolltech? etc..

Thx,
Florian


From dave.benjamin at gmail.com  Sat May  7 12:36:30 2005
From: dave.benjamin at gmail.com (Dave Benjamin)
Date: Sat, 07 May 2005 09:36:30 -0700
Subject: Reg strip_tags function in Python.
In-Reply-To: <mailman.126.1115447108.29826.python-list@python.org>
References: <mailman.126.1115447108.29826.python-list@python.org>
Message-ID: <v76fe.11450$fI.7264@fed1read05>

praba kar wrote:
> In Php I can use strip_tags() function to strip out
> all html tags. I want to know that strip_tags()
> equivalent function in Python.

Here's a simple function based on Python's HTMLParser class. If you need 
to reject only certain tags, you'll probably want to subclass 
HTMLParser, but for simply stripping all tags, this works:

from HTMLParser import HTMLParser
def strip_tags(html):
     result = []
     parser = HTMLParser()
     parser.handle_data = result.append
     parser.feed(html)
     parser.close()
     return ''.join(result)

See the docs for more details on HTMLParser:
http://docs.python.org/lib/module-HTMLParser.html

Dave


From xah at xahlee.org  Sat May  7 19:28:11 2005
From: xah at xahlee.org (Xah Lee)
Date: 7 May 2005 16:28:11 -0700
Subject: New Python regex Doc (was: Python documentation moronicities)
References: <1113301533.054410.203710@z14g2000cwz.googlegroups.com>
	<mailman.1813.1113355346.1799.python-list@python.org>
	<1113856843.023012.165500@l41g2000cwc.googlegroups.com>
	<1113908069.264676.207090@g14g2000cwa.googlegroups.com>
	<1115328523.852744.110390@f14g2000cwb.googlegroups.com>
	<1115423751.016177.250650@o13g2000cwo.googlegroups.com>
	<1115444726.627426.172260@g14g2000cwa.googlegroups.com>
Message-ID: <1115508491.462229.294020@o13g2000cwo.googlegroups.com>

Let me expose one another fucking incompetent part of Python doc, in
illustration of the Info Tech industry's masturbation and ignorant
nature.

The official Python doc on regex syntax (
http://python.org/doc/2.4/lib/re-syntax.html ) says:

--begin quote--

"|"
A|B, where A and B can be arbitrary REs, creates a regular expression
that will match either A or B. An arbitrary number of REs can be
separated by the "|" in this way. This can be used inside groups (see
below) as well. As the target string is scanned, REs separated by "|"
are tried from left to right. When one pattern completely matches, that
branch is accepted. This means that once A matches, B will not be
tested further, even if it would produce a longer overall match. In
other words, the "|" operator is never greedy. To match a literal "|",
use \|, or enclose it inside a character class, as in [|].

--end quote--

Note: ?In other words, the "|" operator is never greedy.?

Note the need to inject the high-brow jargon ?greedy? here as a
latch on sentence.

?never greedy?? What is greedy anyway?

?Greedy?, when used in the context of computing, describes a
certain characteristics of algorithms. When a algorithm for a
minimizing/maximizing problem is such that, whenever it faced a choice
it simply chose the shortest path, without considering whether that
choice actually results in a optimal solution.

The rub is that such stratedgy will often not obtain optimal result in
most problems. If you go from New York to San Francisco and always
choose the road most directly facing your destination, you'll never get
on.

For a algorithm to be greedy, it is implied that it faces choices. In
the case of alternatives in regex "regex1|regex2|regex3", there is
really no selection involved, but following a given sequence.

What the writer were thinking when he latched on about greediness, is
that the result may not be from the pattern that matches the most
substring, therefore it is not ?greedy?. It's not greedy Python
docer's ass.

Such blind jargon throwing, as found everywhere in tech docs, is a
significant reason why the computing industry is filled with shams the
likes of unix, Perl, Programing Patterns, eXtreme Programing,
?Universal Modeling Language?, fucking shits.

----
A better writen doc for the complete regex module is at:
http://xahlee.org/perl-python/python_re-write/lib/module-re.html

See also: Responsible Software Licensing
http://xahlee.org/UnixResource_dir/writ/responsible_license.html

 Xah
 xah at xahlee.org
? http://xahlee.org/



From jstroud at mbi.ucla.edu  Fri May 20 16:20:48 2005
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Fri, 20 May 2005 13:20:48 -0700
Subject: appending key-value pairs to a dict
In-Reply-To: <d6lfsg$5t1$1@solaris.cc.vt.edu>
References: <d6lfsg$5t1$1@solaris.cc.vt.edu>
Message-ID: <200505201320.48664.jstroud@mbi.ucla.edu>

On Friday 20 May 2005 01:04 pm, rbt wrote:
> I know how to setup an empty list and loop thru something... appending
> to the list on each loop... how does this work with dicts?
>
> I'm looping thru a list of files and I want to put the file's name and
> its sha hash into a dict on each loop.
>
> Many thanks,
>
> rbt

Simple assignment.

adict[filename] = an_sha_hash



-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From anton.vredegoor at gmail.com  Tue May 17 08:28:43 2005
From: anton.vredegoor at gmail.com (Anton Vredegoor)
Date: 17 May 2005 05:28:43 -0700
Subject: Python on a public library computer
In-Reply-To: <mailman.92.1116331961.8733.python-list@python.org>
References: <1116069664.779281.320540@g47g2000cwa.googlegroups.com>
	<87r7g6rbz0.fsf@pobox.com>
	<mailman.67.1116286093.8733.python-list@python.org>
	<1116330665.197293.198950@o13g2000cwo.googlegroups.com>
	<mailman.92.1116331961.8733.python-list@python.org>
Message-ID: <1116332923.581021.202570@o13g2000cwo.googlegroups.com>

Robert Kern wrote:

> There is a Java SSH client that runs in the browser.
>
> http://www.oit.duke.edu/sa/security/ssh.html

Great! I have a terminal. I can't figure out how to start jython from
there though.

Anton



From harlinseritt at yahoo.com  Tue May 10 05:12:46 2005
From: harlinseritt at yahoo.com (Harlin Seritt)
Date: 10 May 2005 02:12:46 -0700
Subject: Does TKinter Have A Grid ?
In-Reply-To: <pan.2005.05.10.08.49.16.621818@optushome.com.au>
References: <pan.2005.05.10.08.49.16.621818@optushome.com.au>
Message-ID: <1115716366.627600.162680@o13g2000cwo.googlegroups.com>

Not a grid widget necessarilly but a 'grid' method you can use instead
of pack(). Take a look at
http://www.pythonware.com/library/tkinter/introduction/grid.htm. If
this isn't what you mean, come back.

Harlin Seritt



From fredrik at pythonware.com  Fri May  6 08:57:02 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Fri, 6 May 2005 14:57:02 +0200
Subject: Setting the corner color in rotated PIL images
References: <Xns96494A613BC4Fjreeder@63.223.7.253>
Message-ID: <d5fp64$886$1@sea.gmane.org>

"rzed" wrote:

> I'm using PIL to generate some images which may be rotated at the
> user's option. When they are rotated, the original image is cropped
> in the new image (which is fine), and the corners are black (which
> is not, in this case). I can't find any documented way to change
> the default fill color (if that's what it is) for the corners, and
> PIL also doesn't seem to support a flood fill. I have created a
> flood fill in Python, which works but which markedly slows image
> generation.
>
> Can anyone suggest a better way to set the color of the corners?

if you're doing this on RGB images, the quickest way to do this is:

    def rotate(image, angle, color):
        bg = Image.new("RGB", image.size, color)
        im = image.convert("RGBA").rotate(angle)
        bg.paste(im, im)
        return bg

here's a more general solution:

    def rotate(image, angle, color, filter=Image.NEAREST):
        if image.mode == "P" or filter == Image.NEAREST:
            matte = Image.new("1", image.size, 1) # mask
        else:
            matte = Image.new("L", image.size, 255) # true matte
        bg = Image.new(image.mode, image.size, color)
        bg.paste(
            image.rotate(angle, filter),
            matte.rotate(angle, filter)
            )
        return bg

</F> 





From sklass at pointcircle.com  Sun May 22 19:34:08 2005
From: sklass at pointcircle.com (rh0dium)
Date: 22 May 2005 16:34:08 -0700
Subject: Parsing XML - Newbie help
In-Reply-To: <mailman.5.1116782579.21604.python-list@python.org>
References: <1116701614.858127.105550@g47g2000cwa.googlegroups.com>
	<mailman.5.1116782579.21604.python-list@python.org>
Message-ID: <1116804848.061094.209740@g43g2000cwa.googlegroups.com>


Fredrik Lundh wrote:

> didn't you ask the same question a few days ago?  did you read the
> replies to that post?

Yes I did but the XML was malformed.. Actually it still is but you
helped me figure out a way to correct it - Thanks

Here is what I have so far.  Now I want to find a child of a child ( I
think that's how you state it ?? )  Below is a piece of the XML which I
am trying to parse..  In short I want to figure out all of the memory
in a system.  I can look at  the "size" of all "bank:?"'s and add them
up. I am having trouble getting to the children of the "System Memory"

        inp = open("xml.test1")
        data = inp.read()
        inp.close()
        # strip off bogus XML declaration
        import re
        m = re.match("<\?xml[^>]+>", data)
        if m:
            data = data[m.end():]
        # Apparently ampersands are common in lshw.. Get rid of them..
        data = data.replace('&ampersand;', '')
        # wrap notes in container element
        data = "<doc>" + data + "</doc>"

        tree = ET.XML(data)

         for elem in tree.findall(".//node"):
            if elem.get("class") == "memory":
                if elem.findtext("description") == "System Memory":
                    print "Found system memory bank"

Ok so up to here I am ok.  I find ( If you want the full xml let me
know) two blocks of system memory.  It MUST be "System Memory" only.
Now how do I get a list of all of the children "nodes" of this.  They
are named bank:N  ( i.e bank:0, bank:1 etc [see below] ).  For each one
of those there may ( or may not ) have some memory stuck in it.  I can
tell if there is memory because a size is given.  I want to a list of
all of the sizes.  From there I can say you have sum(memory) in
len(memory) banks of total banks.

Here is what I tried - but I was clearly messing up..

                    for mem in elem.findall("./node/node")
                        if elem.get("class") == "memory":
                            print "Entering Memory Class"
                            if elem.findtext("size"):
                                print "Found size",
elem.findtext("size"):

And the XML which goes with that..

       <node id="memory:0" claimed="true" class="memory"
handle="DMI:0027">
          <description>System Memory</description>
          <physid>27</physid>
          <slot>System board or motherboard</slot>
          <node id="bank:0" claimed="true" class="memory"
handle="DMI:002C">
             <description>DIMM DDR Synchronous [empty]</description>
             <vendor>JEDEC ID:</vendor>
             <physid>0</physid>
             <slot>DIMM3B</slot>
          </node>
          <node id="bank:1" claimed="true" class="memory"
handle="DMI:002D">
             <description>DIMM DDR Synchronous [empty]</description>
             <vendor>JEDEC ID:</vendor>
             <physid>1</physid>
             <slot>DIMM3A</slot>
          </node>
          <node id="bank:2" claimed="true" class="memory"
handle="DMI:002E">
             <description>DIMM DDR Synchronous 400 MHz (2.5
ns)</description>
             <product>M3 12L2920BG0-CCC</product>
             <vendor>JEDEC ID:CE 00 00 00 00 00 00 00</vendor>
             <physid>2</physid>
             <serial>96000241</serial>
             <slot>DIMM1B</slot>
             <size units="bytes">1073741824</size>
             <width units="bits">64</width>
             <clock units="Hz">400000000</clock>
          </node>
          <node id="bank:3" claimed="true" class="memory"
handle="DMI:002F">
             <description>DIMM DDR Synchronous 400 MHz (2.5
ns)</description>
             <product>M3 12L2920BG0-CCC</product>
             <vendor>JEDEC ID:CE 00 00 00 00 00 00 00</vendor>
             <physid>3</physid>
             <serial>4A000741</serial>
             <slot>DIMM1A</slot>
             <size units="bytes">1073741824</size>
             <width units="bits">64</width>
             <clock units="Hz">400000000</clock>
          </node>
       </node>
       <node id="memory:1" claimed="true" class="memory"
handle="DMI:0028">
          <description>System Memory</description>
          <physid>28</physid>
          <slot>System board or motherboard</slot>
          <node id="bank:0" claimed="true" class="memory"
handle="DMI:0030">
             <description>DIMM DDR Synchronous [empty]</description>
             <vendor>JEDEC ID:</vendor>
             <physid>0</physid>
             <slot>DIMM4B</slot>
          </node>
          <node id="bank:1" claimed="true" class="memory"
handle="DMI:0031">
             <description>DIMM DDR Synchronous [empty]</description>
             <vendor>JEDEC ID:</vendor>
             <physid>1</physid>
             <slot>DIMM4A</slot>
          </node>
          <node id="bank:2" claimed="true" class="memory"
handle="DMI:0032">
             <description>DIMM DDR Synchronous 400 MHz (2.5
ns)</description>
             <product>M3 12L2920BG0-CCC</product>
             <vendor>JEDEC ID:CE 00 00 00 00 00 00 00</vendor>
             <physid>2</physid>
             <serial>95000041</serial>
             <slot>DIMM2B</slot>
             <size units="bytes">1073741824</size>
             <width units="bits">64</width>
             <clock units="Hz">400000000</clock>
          </node>
          <node id="bank:3" claimed="true" class="memory"
handle="DMI:0033">
             <description>DIMM DDR Synchronous 400 MHz (2.5
ns)</description>
             <product>M3 12L2920BG0-CCC</product>
             <vendor>JEDEC ID:CE 00 00 00 00 00 00 00</vendor>
             <physid>3</physid>
             <serial>58000E41</serial>
             <slot>DIMM2A</slot>
             <size units="bytes">1073741824</size>
             <width units="bits">64</width>
             <clock units="Hz">400000000</clock>
          </node>
       </node>
       <node id="memory:2" class="memory" handle="DMI:0029">
          <description>Flash Memory</description>
          <physid>29</physid>
          <slot>System board or motherboard</slot>
          <capacity units="bytes">1048576</capacity>
          <node id="bank" class="memory" handle="DMI:0035">
             <description>Chip FLASH Non-volatile</description>
             <physid>0</physid>
             <slot>SYSTEM ROM</slot>
             <size units="bytes">1048576</size>
             <width units="bits">4</width>
          </node>
       </node>
       <node id="memory:3" class="memory" handle="">
          <physid>b</physid>
       </node>
       <node id="memory:4" class="memory" handle="">
          <physid>c</physid>
       </node>
       <node id="memory:5" class="memory" handle="PCI:00:00.0">
          <description>Memory controller</description>
          <product>CK804 Memory Controller</product>
          <vendor>nVidia Corporation</vendor>
          <physid>0</physid>
          <businfo>pci at 00:00.0</businfo>
          <version>a3</version>
          <width units="bits">32</width>
          <clock units="Hz">66000000</clock>
          <capabilities>
             <capability id="bus_master" >bus mastering</capability>
             <capability id="cap_list" >PCI capabilities
listing</capability>
          </capabilities>
       </node>


Thanks so much.  PS - XML can be a real PITA when the data you throw at
it is not "correct".  I actually had started working with sgmllib after
I saw a similar thread.  However I ran into the same problem ( child of
child..)

Thanks again.



From martin at v.loewis.de  Wed May 18 01:38:25 2005
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Wed, 18 May 2005 07:38:25 +0200
Subject: SSL (HTTPS) with 2.4
In-Reply-To: <1116392416.139727.84630@g49g2000cwa.googlegroups.com>
References: <1116392416.139727.84630@g49g2000cwa.googlegroups.com>
Message-ID: <428AD4D1.8030405@v.loewis.de>

Bloke wrote:
> Some time ago (years) I had a script on Python 2.2 that would retieve a
> HTTPS web site.  I used python22-win32-ssl.zip to handle the SSL aspect
> and it worked wonderfully.  I am revisiting the project and need to
> update it to Python 2.4.1.  python22-win32-ssl.zip isn't compatable
> (duh) and I can't find a newer version.  I have had a search and can't
> find anything to point me in the right direction.
> 
> Can someone please help?

In Python 2.4, you don't need any additional libraries to do SSL on
the HTTP client side - Python 2.4 comes with SSL included (IIRC, you
didn't need these libraries in Python 2.2, either).

Just use httplib.HTTPS or httplib.HTTPSConnection instead.

Regards,
Martin


From ptjm at interlog.com  Fri May 20 00:09:26 2005
From: ptjm at interlog.com (Patrick TJ McPhee)
Date: 20 May 2005 04:09:26 GMT
Subject: Comparing 2 similar strings?
References: <24a6d$428b9c10$d1b717f8$2300@PRIMUS.CA>
	<ukqn811uo3qaa5lpihfq1fu71auuslel10@4ax.com>
	<wOSdnW21Bo1qlBHfRVn-uQ@comcast.com>
	<153o811mt7uhqa3aojb5101sd7qo4jrgps@4ax.com>
Message-ID: <3f567mF62qlfU1@uni-berlin.de>

In article <153o811mt7uhqa3aojb5101sd7qo4jrgps at 4ax.com>,
John Machin  <sjmachin at lexicon.net> wrote:

% None of the other approaches make the mistake of preserving the first
% letter -- this alone is almost enough reason for jettisoning soundex.

Metaphone does, at least in the case of Aaron and Erin.


-- 

Patrick TJ McPhee
North York  Canada
ptjm at interlog.com


From ccurvey at gmail.com  Sat May 14 09:08:40 2005
From: ccurvey at gmail.com (Chris Curvey)
Date: 14 May 2005 06:08:40 -0700
Subject: win32com and apache and permissions
In-Reply-To: <1116074789.027336.299290@g44g2000cwa.googlegroups.com>
References: <1116074789.027336.299290@g44g2000cwa.googlegroups.com>
Message-ID: <1116076120.372350.5990@o13g2000cwo.googlegroups.com>

found the answer five minutes after posting the question.  Isn't that
always the way?

I had not granted the Apache user permission to launch IE.  To do so:

* launch DCOMCNFG.exe
* choose "internet explorer" and click "properties"
* choose the "security" tab and and "custom launch permissions"
* "edit  permissions", then "add"
* choose "Users", then click "show users"
* choose the "apache" user and click "add"
* "OK" your way out of there.



From Peter.Vandersteegen at gmail.com  Thu May 12 12:39:35 2005
From: Peter.Vandersteegen at gmail.com (peter)
Date: 12 May 2005 09:39:35 -0700
Subject: Debugging python with c++ extensions under windows with eclipse CDT
Message-ID: <1115915975.397125.173780@g43g2000cwa.googlegroups.com>

Hello all,

I would like to debug my python libraries, written in c++, with GDB
(gnu debugger)
I'm using the mingw compiler in a windows environment.  As development
environment I use eclipse with the CDT plugin.  This plugin also has a
nice GUI frontend for the GDB.

I've already tried several setups, no setup seemed to work.

Therefore my first question simply is: has anybody already succeeded in
using the GDB used by eclipse CDT to debug a c++ extension?
Is this actually the best way to debug DLLs in windows? Is visual
studio better suited for the job?  Is there another option I am not
aware of?

thx a lot for reading so far

Peter


In the following section I explain in detail what I've already tried.
It can easily be skipped.

Ok, an overview of the things I've already done:
first, to use mingw with the python distribution, I've first followed
http://sebsauvage.net/python/mingw.html in order to get an adjusted
libpython23.a  Otherwise you cannot use the mingw compiler with python
under windows

In order to debug my code, I've found in this newsgroup the topic:
           "Debugging python with C++ extensions"
and similar I've found
http://ruby.wag.caltech.edu/Tutorials/double-debugger.html

I've tried somewhat similar in my eclipse CDT environment:
I start a python script, which pauses at a point I've inserted:
>>>a = raw_input("")
Now I can start the GDB and attach it to this running python process...

In eclipse this is "right mouse click" > debug > debug > "c/c++ attach
to local application"
I create a new configuration of this type, fill in the correct DLL.
(making sure my binary parser was correct, this is usually the problem
if you can't find any binaries)

all this did not same to work...

I get an error" Cannot access memory at address 0x68f52bcc
Cannot access memory at address 0x68f52bcc"
and I no longer understand anything which is going on in the the
debugger.

So again the basic question is: has anybody already succeeded in using
the GDB for debugging python c++ libraries in windows?
Does this also work when you use the eclipse environment?

once again, kind regards



From wuwei23 at gmail.com  Wed May 25 21:43:05 2005
From: wuwei23 at gmail.com (alex23)
Date: 25 May 2005 18:43:05 -0700
Subject: Automatically populate and submit HTML Forms
References: <d72h34$2is$1@solaris.cc.vt.edu>
Message-ID: <1117071785.193503.41620@g49g2000cwa.googlegroups.com>

Hey rbt,

You should take a look at mechanize:
http://wwwsearch.sourceforge.net/mechanize/

One of its listed features is 'Easy HTML form filling, using ClientForm
interface'.

A more recent option which came up on this group a few days ago is
twill: http://www.idyll.org/~t/www-tools/twill.html

twill combines pyparsing & mechanize to provide a way of scripting
tests for web applications. While it might not offer the functionality
you're after (I haven't had call to use either of these), it looks very
accessible, and could provide some good examples for using mechanize
with your own scripts.

-alex23



From mwm at mired.org  Fri May  6 16:27:58 2005
From: mwm at mired.org (Mike Meyer)
Date: Fri, 06 May 2005 15:27:58 -0500
Subject: hard memory limits
References: <d5f9jl$k6d$1@domitilla.aioe.org> <86vf5w5tkz.fsf@guru.mired.org>
	<d5g94e$8d0$1@sea.gmane.org>
	<200505061052.28325.jstroud@mbi.ucla.edu>
	<mailman.108.1115404168.29826.python-list@python.org>
Message-ID: <86hdhg5cc1.fsf@guru.mired.org>

"Fredrik Lundh" <fredrik at pythonware.com> writes:

> James Stroud wrote:
>
>> > does Mac OS X ship with memory limits set by default?  isn't that
>> > a single-user system?
>>
>> Dear original poster or whoever is interested in OS X:
>>
>> OS X is not a single user system. It is BSD based unix. And its fv at king
>> sweeeeeeeeeeeeeet! (Though I'm using only Linux right now :o/
>
> So why would Apple insist on setting unusably low process limits, when
> the others don't?

You're making an unwarranted assumption here - that the OP wasn't
creating a large process of some kind. IIRC, all we ever saw was the
size of the request that triggered the error, with no indication of
the total process size.

FWIW, OS X has a Mach kernel. The failing vm_malloc call listed in the
OP is a Mach call, not a Unix call. These days, the userland code is
largely FreeBSD. It used to include "the best of" OpenBSD, NetBSD and
FreeBSD at a relatively small level, but that headache was dropped in
favor of tracking one external system. The legacy of the mixed
heritage is utilities from NetBSD and OpenBSD that aren't in
FreeBSD. shlock comes to mind as an obvious example.

         <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From philippe at philippecmartin.com  Tue May 17 11:08:42 2005
From: philippe at philippecmartin.com (Philippe C. Martin)
Date: Tue, 17 May 2005 15:08:42 GMT
Subject: Sorting x lists based on one list ... maybe an example would make
	sense:
References: <eonie.426$VB6.363@newssvr12.news.prodigy.com>
	<ssnie.428$VB6.184@newssvr12.news.prodigy.com>
	<d6d14l$5vj$00$1@news.t-online.com>
Message-ID: <_Nnie.1050$5Z1.166@newssvr30.news.prodigy.com>

> Another way would be to merge the three lists into one of 3-tuples, sort,
> and unmerge, similarly to the DSU pattern -- which raises the question:
> why are you using three lists in the first place?

:-) Thanks, the lists will evolve and are also stored in 'csv' format in
external files at one point. I cannot use dictionaries because I need to
control the sorting (hash).

In this specific case, list 1 represents students with their information,
list 2 represents assignments with information such as weight, term, max
grade ... and list 3 the actual grades.

Regards,

Philippe



Peter Otten wrote:

>> Philippe C. Martin wrote:
>> 
>>> I'm looking for an easy algorithm - maybe Python can help:
>>> I start with X lists which intial sort is based on list #1.
>>> I want to reverse sort list #1 and have all other lists sorted
>>> accordingly.
> 
> One way, using a helper list with indices:
> 
>>>> l1 = ['a','b','c']
>>>> l2 = ['toto','titi','tata'] # 'toto' refers to 'a', 'titi' to b' ....
>>>> l3 = ['foo','bar','doe'] # 'foo' refers to 'a' ........
>>>> indices = sorted(range(len(l1)), key=l1.__getitem__, reverse=True)
>>>> for items in l1, l2, l3:
> ...     items[:] = [items[i] for i in indices]
> ...
>>>> l1
> ['c', 'b', 'a']
>>>> l2
> ['tata', 'titi', 'toto']
>>>> l3
> ['doe', 'bar', 'foo']
> 
> Another way would be to merge the three lists into one of 3-tuples, sort,
> and unmerge, similarly to the DSU pattern -- which raises the question:
> why are you using three lists in the first place?
> 
> Peter



From vfoley at gmail.com  Sun May 29 12:08:45 2005
From: vfoley at gmail.com (Vincent Foley)
Date: 29 May 2005 09:08:45 -0700
Subject: Intellisense and the psychology of typing
In-Reply-To: <1117125072.825389.74190@g47g2000cwa.googlegroups.com>
References: <1117125072.825389.74190@g47g2000cwa.googlegroups.com>
Message-ID: <1117382925.339493.83960@o13g2000cwo.googlegroups.com>

I have rapidly skimmed over the few responses here.  Auto completion is
definitly possible in dynamic languages: Common Lisp has it with its
Emacs mode, SLIME.

If you're in a slime buffer, you type (get-un then press C-c Tab and
Emacs will auto-complete with (get-universal-time), if there are many
choices, they will be displayed in a split window, if the function
takes parameters, those will appear in the mini-buffer, like so:

(with-open-file (stream sb-impl::filespec &rest sb-impl::options) &body
body)

SLIME is also not the only place where a dynamic language has
auto-completion, check out Ecomplete in Squeak or the auto-complete
package in Visual Works Smalltalk.  It can be done, maybe not as easily
as in a statically typed language, but it definitly can be done.



From philippe at philippecmartin.com  Wed May 18 09:01:47 2005
From: philippe at philippecmartin.com (Philippe C. Martin)
Date: Wed, 18 May 2005 13:01:47 GMT
Subject: How to learn OO of python?
References: <mailman.130.1116402087.8733.python-list@python.org>
	<5EGie.1718$5Z1.1396@newssvr30.news.prodigy.com>
Message-ID: <%0Hie.1695$VB6.380@newssvr12.news.prodigy.com>

PS: if you're under linux, try umbrello: you design your classes with a
graphical tool and umbrello will generate the code (Python too) for you.


Philippe C. Martin wrote:

> You might want to look at this first:
> 
> http://pigseye.kennesaw.edu/~dbraun/csis4650/A&D/UML_tutorial/
> http://uml.tutorials.trireme.com/
> 
> 
> 
> 
> 
> 
> could ildg wrote:
> 
>> I have learned python for over a month.
>> I heard that it was very easy to learn, but when I tried to know OO of
>> python, I found it really weird, some expressions seem very hard to
>> understand, and I can't find enough doc to know any more about it.
>> So, I wonder how did you master python? And where to find some cool docs?
>> 
>> Thanks.



From mrmaple at gmail.com  Mon May 23 14:19:44 2005
From: mrmaple at gmail.com (James Carroll)
Date: Mon, 23 May 2005 14:19:44 -0400
Subject: Running a python program during idle time only
In-Reply-To: <1116869538.611233.264960@g14g2000cwa.googlegroups.com>
References: <1116637560.499307.28700@o13g2000cwo.googlegroups.com>
	<mailman.7.1116821147.18027.python-list@python.org>
	<1116869538.611233.264960@g14g2000cwa.googlegroups.com>
Message-ID: <b273c7410505231119340e0dfc@mail.gmail.com>

I think you can keep your sleep commands in your program to keep it
from hogging the cpu even when you are running it as nice.

You know, even more important than cpu load (since your indexer is
accessing the hard drive, is hard drive access..)  You can monitor the
bytes  / second going to the hard drives using a WMI query similar to
the one that gives you LoadPercentage for a cpu.

If something Is trying to read and write to the hard drive, and your
indexer is going at the same time, hard drive head contention can slow
down both processess to a crawl.  (Say your program is in C:/apps  and
another program is simutaneously trying to read from C:/data... the
heads have to seek back and forth between the two spots on the hard
drive, and it's much faster to do all the C:/apps accesses and then
later do all the C:/data accesses.)

So I think my approach would be to have the indexer take about 10% of
cpu load while it is active, and as soon as another process is doing
enough reading / writing to the hard drive, stop and wait for about
five minutes... then continuing.

The screen saver idea is another good one.  I found this the other day...
  http://homepage.hispeed.ch/py430/python/win32screensaver-0.3.2.zip

The problem is that any potential user that really likes their pretty
screen saver (Helios under Ubuntu... droool............ slurp.)  then
they can't have both your indexer and their pretty screensaver active
during idle time.

-Jim


On 23 May 2005 10:32:18 -0700, los <carlos80 at gmail.com> wrote:
> Thanks for all the replies.
>
> I did try using nice under windows.  I created a java program that
> would just loop and print numbers on the screen.  Even when I ran that
> simple program with nice, (lets call it program A) as soon as I started
> the program the cpu went all the way to 100% usage.  Then when I ran

<snip>


From dcrespo at gmail.com  Mon May  2 09:08:02 2005
From: dcrespo at gmail.com (dcrespo)
Date: 2 May 2005 06:08:02 -0700
Subject: Which IDE is recommended?
In-Reply-To: <9f7v619jhigbtoksslnr88f4idoc6ejvu3@4ax.com>
References: <426f90ac$1_2@rain.i-cable.com>
	<9f7v619jhigbtoksslnr88f4idoc6ejvu3@4ax.com>
Message-ID: <1115039282.069052.287920@o13g2000cwo.googlegroups.com>

> But I personally recommend DrPython. (Not only, I'm a member of the
> project).

I saw this message and downloaded DrPython. It's very good: I like the
class/functions browser while I'm coding... but I can't find the
autocompletion feature you talk, and I think this feature is very
important. Where it is?

Daniel



From hemanthps at gmail.com  Mon May  9 06:02:26 2005
From: hemanthps at gmail.com (hemanth)
Date: 9 May 2005 03:02:26 -0700
Subject: Python LDAP Schema Pickle
References: <1115628644.993344.242900@f14g2000cwb.googlegroups.com>
Message-ID: <1115632946.131949.283270@z14g2000cwz.googlegroups.com>

Why don't you check if ldaptor has implemented a similar functionality?
I got the following link while googling:
<http://www.inoi.fi/open/trac/ldaptor>



From heiko.wundram at ceosg.de  Fri May 13 03:15:21 2005
From: heiko.wundram at ceosg.de (Heiko Wundram)
Date: Fri, 13 May 2005 09:15:21 +0200
Subject: How to find the classname of an object? (was Python Documentation)
In-Reply-To: <4283fda8.18221170@news.oz.net>
References: <mailman.503.1115940149.29826.python-list@python.org>
	<hGRge.14335$941.9700@trnddc08> <4283fda8.18221170@news.oz.net>
Message-ID: <200505130915.21768.heiko.wundram@ceosg.de>

On Friday 13 May 2005 03:11, Bengt Richter wrote:
>  >>> type(obj).mro()
>
>  [<class '__main__.A'>, <class '__main__.B1'>, <class '__main__.B2'>,
> <class '__main__.C'>, <type 'object'>]
>

Wow! No need to write a depth-first tree-traversal algorithm... Somebody add 
this idiom to the cookbook.

--- Heiko.


From Bill at SynectixLtd.com  Thu May 12 04:48:28 2005
From: Bill at SynectixLtd.com (Bill Davy)
Date: Thu, 12 May 2005 08:48:28 +0000 (UTC)
Subject: SWIG/IDLE/Python: F5 SHIP.py works but "import SHIP" gives
	"ImportError: dynamic module does not define init function (initSHIP)"
Message-ID: <d5v58s$o9n$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>

I am working with MSVC6 on Windows XP.

I have created an MSVC project called SHIP

I have a file SHIP.i with "%module SHIP" as the first line (file is below).

I run SHIP.i through SWIG 1.3.24 to obtain SHIP_wrap.cpp and SHIP.py; the 
latter contains the line "import _SHIP".

I compile SHIP_wrap.cpp and a bunch of files into a DLL which I have the 
linker place in _SHIP.pyd and all goes well.

I start IDLE (version 1.1.1, with Python 2.4.1)

If I open SHIP.py in an edit window and run it (using F5) it runs and if I 
do >>> _SHIP.__dict__.keys() I get a load of function names which are like 
the ones I'd expect (new_BallScrew for example, where BallScrew is one of my 
classes [and is the interface class to the thing I am really interested in 
which is already called BallScrewC, before you ask]).

Then I can do things like:

>>> bs = BallScrew(0)

>>> bs.Stop()

>>> del bs

They work fine. Except of course I really want to put all that stuff in a 
script, say test1.py:

import SHIP # This is where my problems begin.

bs = BallScrew(0)

bs.GotoLimit(1)

bs.Stop()

del bs

Which I do and when I run test1.py using F5, the line "import SHIP" in 
test1.py produces:

ImportError: dynamic module does not define init function (initSHIP)

So, why can I run SHIP.py straight into Python using F5 but not import it 
either directly (>>> import SHIP gives the same error) or indirectly when I 
am running another file?

One way round this (though I would like to solve this problem as it will 
make things easier as the application grows) is for F5 in IDLE not to 
restart the Python interpreter.

My aim is for an engineer to be able to use IDLE to write programs to test 
hardware without having to learn C++ to access my OO interface. IDLE and 
Python are ideal but I want to make it easy for them to load the interface 
(i.e. SHIP) between Python and my OO interface.

Many thanks in advance for any helpful suggestions,

Bill

PS I posted this to swig at cs.uchicago.edu but it did not seem to get through.

00000000000000000000000000000000000000000000000000000000

SHIP.i:

%module SHIP

%{

#include "SHIPIF.hpp"

%}

%include "SHIPIF.hpp"

00000000000000000000000000000000000000000000000000000000

SHIP.py (with no initSHIP L ):

# This file was created automatically by SWIG.

# Don't modify this file, modify the SWIG interface instead.

# This file is compatible with both classic and new-style classes.

import _SHIP

def _swig_setattr_nondynamic(self,class_type,name,value,static=1):

if (name == "this"):

if isinstance(value, class_type):

self.__dict__[name] = value.this

if hasattr(value,"thisown"): self.__dict__["thisown"] = value.thisown

del value.thisown

return

method = class_type.__swig_setmethods__.get(name,None)

if method: return method(self,value)

if (not static) or hasattr(self,name) or (name == "thisown"):

self.__dict__[name] = value

else:

raise AttributeError("You cannot add attributes to %s" % self)

def _swig_setattr(self,class_type,name,value):

return _swig_setattr_nondynamic(self,class_type,name,value,0)

def _swig_getattr(self,class_type,name):

method = class_type.__swig_getmethods__.get(name,None)

if method: return method(self)

raise AttributeError,name

import types

try:

_object = types.ObjectType

_newclass = 1

except AttributeError:

class _object : pass

_newclass = 0

del types





ToString = _SHIP.ToString

class ObjectCounterC(_object):

__swig_setmethods__ = {}

__setattr__ = lambda self, name, value: _swig_setattr(self, ObjectCounterC, 
name, value)

__swig_getmethods__ = {}

__getattr__ = lambda self, name: _swig_getattr(self, ObjectCounterC, name)

def __repr__(self):

return "<%s.%s; proxy of C++ ObjectCounterC instance at %s>" % 
(self.__class__.__module__, self.__class__.__name__, self.this,)

def __init__(self, *args):

_swig_setattr(self, ObjectCounterC, 'this', _SHIP.new_ObjectCounterC(*args))

_swig_setattr(self, ObjectCounterC, 'thisown', 1)

def __del__(self, destroy=_SHIP.delete_ObjectCounterC):

try:

if self.thisown: destroy(self)

except: pass



class ObjectCounterCPtr(ObjectCounterC):

def __init__(self, this):

_swig_setattr(self, ObjectCounterC, 'this', this)

if not hasattr(self,"thisown"): _swig_setattr(self, ObjectCounterC, 
'thisown', 0)

_swig_setattr(self, ObjectCounterC,self.__class__,ObjectCounterC)

_SHIP.ObjectCounterC_swigregister(ObjectCounterCPtr)

class CallBack(_object):

__swig_setmethods__ = {}

__setattr__ = lambda self, name, value: _swig_setattr(self, CallBack, name, 
value)

__swig_getmethods__ = {}

__getattr__ = lambda self, name: _swig_getattr(self, CallBack, name)

def __repr__(self):

return "<%s.%s; proxy of C++ CallBack instance at %s>" % 
(self.__class__.__module__, self.__class__.__name__, self.this,)

def __init__(self, *args):

_swig_setattr(self, CallBack, 'this', _SHIP.new_CallBack(*args))

_swig_setattr(self, CallBack, 'thisown', 1)

def __del__(self, destroy=_SHIP.delete_CallBack):

try:

if self.thisown: destroy(self)

except: pass

def SetResult(*args): return _SHIP.CallBack_SetResult(*args)

def GetResult(*args): return _SHIP.CallBack_GetResult(*args)

def Reset(*args): return _SHIP.CallBack_Reset(*args)

def GetReady(*args): return _SHIP.CallBack_GetReady(*args)

class CallBackPtr(CallBack):

def __init__(self, this):

_swig_setattr(self, CallBack, 'this', this)

if not hasattr(self,"thisown"): _swig_setattr(self, CallBack, 'thisown', 0)

_swig_setattr(self, CallBack,self.__class__,CallBack)

_SHIP.CallBack_swigregister(CallBackPtr)

class BallScrew(_object):

__swig_setmethods__ = {}

__setattr__ = lambda self, name, value: _swig_setattr(self, BallScrew, name, 
value)

__swig_getmethods__ = {}

__getattr__ = lambda self, name: _swig_getattr(self, BallScrew, name)

def __repr__(self):

return "<%s.%s; proxy of C++ BallScrew instance at %s>" % 
(self.__class__.__module__, self.__class__.__name__, self.this,)

def __init__(self, *args):

_swig_setattr(self, BallScrew, 'this', _SHIP.new_BallScrew(*args))

_swig_setattr(self, BallScrew, 'thisown', 1)

def Stop(*args): return _SHIP.BallScrew_Stop(*args)

def __del__(self, destroy=_SHIP.delete_BallScrew):

try:

if self.thisown: destroy(self)

except: pass

def SetNonExposeCurrent(*args): return 
_SHIP.BallScrew_SetNonExposeCurrent(*args)

def Move(*args): return _SHIP.BallScrew_Move(*args)

class BallScrewPtr(BallScrew):

def __init__(self, this):

_swig_setattr(self, BallScrew, 'this', this)

if not hasattr(self,"thisown"): _swig_setattr(self, BallScrew, 'thisown', 0)

_swig_setattr(self, BallScrew,self.__class__,BallScrew)

_SHIP.BallScrew_swigregister(BallScrewPtr)

BallScrewCalBackFunction = _SHIP.BallScrewCalBackFunction




From zip.pritchard at pzlqs.com  Sun May 15 02:31:59 2005
From: zip.pritchard at pzlqs.com (zip.pritchard at pzlqs.com)
Date: Sun, 15 May 2005 06:31:59 GMT
Subject: Paranoider Deutschenmoerder kommt in Psychiatrie
Message-ID: <9ba1e.ff58cb2b43@pzlqs.com>

Lese selbst:
http://brandenburg.rz.fhtw-berlin.de/poetschke.html


From "none\" at (none)  Fri May 13 16:44:24 2005
From: "none\" at (none) (none)
Date: Fri, 13 May 2005 15:44:24 -0500
Subject: Faster GUI text control
Message-ID: <A_udnVpGA43xjBjfRVn-iQ@comcast.com>

Hi,
   I wrote a program for work that processed and formatted some 
collected text data in a Tkinter based GUI display.  I've found that as 
my data files get longer (a few thousand lines), there seems to be a 
real lag when it comes to clearing or updating the Text control, enough 
so that the program just isn't useful.  I poked around some and saw 
several people mention that is was a known issue with Tkinter.
  I'm trying to decide what is the best replacement for the control.  I 
was originally planning on redoing the GUI with wxpython, but I've seen 
people indicate I would have the same problem.  I also was looking at 
Fredrik Lundh's widget construction kit info.  That looks like it could 
be useful, but it would still require building a new control and I'm not 
sure if it would solve my base problem.  I'm still pretty inexperienced 
with Python, so I'd like to concentrate on using a working text control 
and writing the data processor part of my program rather than writing 
and debugging a text control to use.  Does anyone have any 
recommendations they could share?  Thanks very much.


From fredrik at pythonware.com  Sun May 15 17:35:22 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Sun, 15 May 2005 23:35:22 +0200
Subject: string.lstrip stripping too much?
References: <000401c55951$6a4b25e0$0505a8c0@cheopsturbo>
Message-ID: <d68fa9$1jd$1@sea.gmane.org>

"joram gemma" wrote:

> on windows python 2.4.1 I have the following problem
>
> >>> s = 'D:\\music\\D\\Daniel Lanois\\For the beauty of Wynona'
> >>> print s
> D:\music\D\Daniel Lanois\For the beauty of Wynona
> >>> t = 'D:\\music\\D\\'
> >>> print t
> D:\music\D\
> >>> s.lstrip(t)
> 'aniel Lanois\\For the beauty of Wynona'
> >>>
>
> why does lstrip strip the D of Daniel Lanois also?

because you told it to do that?

>>> help(str.lstrip)
Help on method_descriptor:

lstrip(...)
    S.lstrip([chars]) -> string or unicode

    Return a copy of the string S with leading whitespace removed.
    If chars is given and not None, remove characters in chars instead.
    If chars is unicode, S will be converted to unicode before stripping

(chars is a set of characters, not a prefix.  the string "D:\\music\\D\\"
contains a D, obviously.  to strip off a prefix, use s[len(prefix):])

</F>





From curi42 at gmail.com  Thu May 26 15:55:16 2005
From: curi42 at gmail.com (Elliot Temple)
Date: 26 May 2005 12:55:16 -0700
Subject: Case Sensitive, Multiline Comments
Message-ID: <1117137316.140791.210430@g14g2000cwa.googlegroups.com>

Hi I have two questions.  Could someone explain to me why Python is
case sensitive?  I find that annoying.  Also, why aren't there
multiline comments?  Would adding them cause a problem of some sort?

Thanks,
Elliot



From jerf at jerf.org  Sat May  7 00:45:41 2005
From: jerf at jerf.org (Jeremy Bowers)
Date: Sat, 07 May 2005 00:45:41 -0400
Subject: Listening to changes in a C++ variable from python
References: <1115434594.806252.12740@o13g2000cwo.googlegroups.com>
Message-ID: <pan.2005.05.07.04.45.41.410011@jerf.org>

On Fri, 06 May 2005 19:56:34 -0700, lamthierry wrote:

> Let's say I have the following source code in C++:
> 
> // The following is in a .cpp file
> 
> int val = 0;
> for ( int i = 0; i < 10; i++ )
>    val = i;
> 
> 
> // Now I'm in a python GUI, glade or GTK
> Is it possible from the GUI side to listen to changes in the val
> variable? Once I notice a change in the variable, I will update a
> widget(for example a display progress bar from glade). Any advice or
> solutions?

It is not possible to "listen" to something that is not "emitting" change
notifications. Your variable "val" isn't "talking".

Some languages let you listen to every variable, but that is because
behind the scenes it is emitting every variable change as an event.

In C++, in keeping with its general philosophy, it is not going to be
possible to listen to an "int". You must either poll it, or wrap that int
in something that *will* emit change messages in some fashion that
satisfies you. Given the circumstance of updating a progress bar, I'd poll
it about every quarter to half second.

The correct answer changes depending on what you are doing with the info
and the level of control you exert over the source C++.



From sjmachin at lexicon.net  Fri May 27 09:12:17 2005
From: sjmachin at lexicon.net (John Machin)
Date: Fri, 27 May 2005 23:12:17 +1000
Subject: Strings for a newbie
In-Reply-To: <d775jt$plg$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
References: <d7726f$fdg$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
	<42970d69@news.eftel.com>
	<d773i4$g2p$1@nwrdmz03.dmz.ncs.ea.ibs-infra.bt.com>
	<42971235.9000805@lexicon.net>
	<d775jt$plg$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
Message-ID: <42971cb4$1@news.eftel.com>

Malcolm Wooden wrote:
> my actual code is:
> 
>   for x in range(len(l)):
>     h = string.split(l[x])
> 
> where the sentence string is in an array of one element 'l'
> Error is:
> 
> Traceback (most recent call last):
>   File "<string>", line 34, in ?
>   File "<string>", line 27, in SentenceText
>   File "C:\PYTHON22\lib\string.py", line 122, in split
>     return s.split(sep, maxsplit)
> AttributeError: 'list' object has no attribute 'split'
> 
Can't tell from that -- do you have "import string" above that, or what?

Please post the whole file, which BTW you should not call "string".
In any case you should not be using the string module; it's old and 
deprecated. Use string methods instead. Why are you using Python 2.2??

I have to go now; it's way past bedtime at this longitude. Like I said, 
post the *whole* file; others will be able to straighten you out when 
they see the gory detail :-)

Cheers,
John


From rcrogers at gmail.com  Wed May  4 15:32:59 2005
From: rcrogers at gmail.com (Bob  Rogers)
Date: 4 May 2005 12:32:59 -0700
Subject: properties vs. eval()
Message-ID: <1115235178.971840.248160@o13g2000cwo.googlegroups.com>

Given this class:

class C(object):
    def set_x(self, x):
        self._x = x

    def get_x(self):
        return self._x

    x = property(get_x, set_x)


This use of compile() and eval() works as I expected it to:

    c = C()
    c.x = 5000
    n = '\'five thousand\''
    code = compile('c.x = ' + n, '<input>', 'exec')
    print 'before ', c.x
    eval(code)
    print 'after  ', c.x

But this, using eval() without compile(), does not:

    c = C()
    c.x = 5000
    n = '\'five thousand\''
    print 'before ', c.x
    eval('c.x = ' + n)
    print 'after  ', c.x

It gives:

    before  5000
    Traceback (most recent call last):
      File "./r.py", line 16, in ?
        eval('c.x = ' + n)
      File "<string>", line 1
        c.x = 'five thousand'
            ^
    SyntaxError: invalid syntax

Could someone please explain just what is going on here, and whether it
is possible to dispense with the compile step and use eval() alone
while setting a property?

Thanks.



From igorcarron at gmail.com  Mon May 30 14:35:20 2005
From: igorcarron at gmail.com (igorcarron at gmail.com)
Date: 30 May 2005 11:35:20 -0700
Subject: How do you drive-by-wire a car using Python ?
Message-ID: <1117478120.880612.75250@g44g2000cwa.googlegroups.com>

Hello everybody,

Our entry in the DARPA Grand Challenge race uses Python as a
programming language. For those of you who are interested, we are
beginning to put some of our code on our blog.

Before being autonomous, our vehicle (a four wheel drive Jeep) has to
first be driven by wire, i.e. use controls through a computer in order
to command the different steering, acceleration/braking actions.

This entry shows you the lighter version of the code we use to do this
drive-by-wire

http://pegasusbridge.blogspot.com/2005/05/how-do-you-drive-by-wire-car-using.html

(please note the disclaimer)

Cheers,

Igor.



From R.Brodie at rl.ac.uk  Wed May 18 04:52:55 2005
From: R.Brodie at rl.ac.uk (Richard Brodie)
Date: Wed, 18 May 2005 09:52:55 +0100
Subject: Bug in Elementtree/Expat
References: <1116331113.765085.281490@g47g2000cwa.googlegroups.com>
	<mailman.103.1116342265.8733.python-list@python.org>
	<1116343915.036584.32160@g47g2000cwa.googlegroups.com>
Message-ID: <d6evp7$jak$1@blackmamba.itd.rl.ac.uk>


<alainpoint at yahoo.fr> wrote in message news:1116343915.036584.32160 at g47g2000cwa.googlegroups.com...

> Most examples in the book do not include such a declaration and yet are
> properly rendered by Internet Explorer.
> Is it mandatory and why is it that Expat crashes on it?

It's not mandatory but it's probably good practice to make the document
self-contained. The xlink prefix is defined in the DTD but Expat, as a
nonvalidating parser, won't fetch it.





From steve at holdenweb.com  Wed May 11 23:31:41 2005
From: steve at holdenweb.com (Steve Holden)
Date: Wed, 11 May 2005 23:31:41 -0400
Subject: Interactive shell for demonstration purposes
In-Reply-To: <9A28C052FF32734DACB0A288A3533991EBB7FD@vogbs009.gb.vo.local>
References: <9A28C052FF32734DACB0A288A3533991EBB7FD@vogbs009.gb.vo.local>
Message-ID: <4282CE1D.2070201@holdenweb.com>

Tim Golden wrote:
> [Brian Quinlan]
> | 
> | Can anyone recommend a Python interactive shell for use in 
> | presentations?
> | 
> | Ideal characteristics (priority order):
> | o configurable font size
> | o full screen mode
> | o readline support
> | o syntax coloring
> | 
> | I've tried ipython but, since it runs inside a console 
> | window, and the 
> | console window has a limited number of selectable fonts, it doesn't 
> | work terribly well.
> | 
> | I've seen presentations using some sort of PyGame implemented shell. 
> | Does anyone have an information on that?
> 
> Warning: untested response.
> 
> Since I remembered that Michael Hudson had done such
> a thing once, I Googled and came across this:
> 
> http://codespeak.net/py/current/doc/execnet.html
> 
> which might get you started.
> 
Wing IDE allows you to create any number of interactive shells and 
either dock them in the IDE framework GUI or move them to separate windows.

On Windows XP I appear, much to my delight, to be able to use 
CTRL-scroll to resize the screen font used in the window, but that may 
just be my video driver. It will (I hope) allow me to demonstrate Wing 
to groups of up to six at a time on my 17" 1820*1200 laptop display.

regards
  Steve
-- 
Steve Holden        +1 703 861 4237  +1 800 494 3119
Holden Web LLC             http://www.holdenweb.com/
Python Web Programming  http://pydish.holdenweb.com/



From jbo at cannedham.ee.ed.ac.uk  Thu May 26 06:35:13 2005
From: jbo at cannedham.ee.ed.ac.uk (Jim O'D)
Date: Thu, 26 May 2005 11:35:13 +0100
Subject: assignment, references and list comprehension
Message-ID: <d748km$1l4$1@scotsman.ed.ac.uk>

Hi everyone

Was just posting a question as I got confused with a big messy sheaf of 
code when I thought I should make a simple example myself. Since I did I 
thought I'd post it for the good of mankind.

I was confused as to whether the assignment of a result of a list 
comprehension created references to the orginal objects... and it does 
(at least for my self-defined object).

e.g.
initArrrgs = ["pick me","not me"]

class MyObject:
	def __init__(arg):
		self.argument = arg;

myObjects = [MyObject(initarg) for initarg in initArrrgs]
myObjects2 = [ob for ob in myObjects if ob.argument == "pick me"]

Then the following interrogation

 >>> myObjects2[0].argument
'pick me'
 >>> myObjects2[0].argument='juicy'
 >>> myObjects2[0].argument
'juicy'
 >>> myObjects[0].argument
'juicy'


Jim


From http  Wed May 11 02:34:41 2005
From: http (Paul Rubin)
Date: 10 May 2005 23:34:41 -0700
Subject: pyvm -- faster python
References: <mailman.164.1115548611.29826.python-list@python.org>
	<1115561483.741761.212140@f14g2000cwb.googlegroups.com>
	<m102l2-9qr.ln1@home.rogerbinns.com>
	<mailman.264.1115716603.29826.python-list@python.org>
	<vu38l2-k5v.ln1@home.rogerbinns.com>
	<7xvf5qbir1.fsf@ruckus.brouhaha.com>
	<nt98l2-1e.ln1@home.rogerbinns.com>
	<7xpsvymlse.fsf@ruckus.brouhaha.com>
	<1115791624.856252.247890@z14g2000cwz.googlegroups.com>
Message-ID: <7x1x8el18e.fsf@ruckus.brouhaha.com>

"Kay Schluehr" <kay.schluehr at gmx.net> writes:
> Delete the "standard" and You still obtain huge librarys for .Net, Java
> and Python. I also regret that Prothon starved in infancy but it might
> be exeggerated to demand that each language designer or one of his
> apostels should manage a huge community that enjoys doing redundant
> stuff like writing Tk-bindings, regexp-engines and all that.

Maybe there needs to be some kind of standard FFI (foreign function
interface) like Lisp implementations have.

> Sooner or later Python will go the LISP way of having a standardized
> "Common-Python" ( std_objectspace) and a number of dialects and DSLs
> running in their own derived object spaces. Maybe Python 3000 is an
> illusion and will fade away like a Fata Morgana the closer we seem come.

Right now Python feels about like Maclisp in the 1970's must have felt
(that was before my time so I can't know for certain).  Lots of
hackerly excitement, lots of cruft.  It needs to ascend to the next
level.  PyPy looks like the best vehicle for that so far.  See

   http://catb.org/~esr/jargon/html/M/MFTL.html

for the canonical remark about languages that can't be used to
implement their own compilers.  Python is fun and useful, but it
really isn't mature until PyPy is released for production use.


From fredrik at pythonware.com  Mon May  9 09:24:36 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Mon, 9 May 2005 15:24:36 +0200
Subject: Trouble saving unicode text to file
References: <1115500976.571232.76100@z14g2000cwz.googlegroups.com><427DDAA5.9020606@v.loewis.de><t4qr71h88us709h4es4oa4fbamnkgkj0sj@4ax.com><427E5136.4000300@v.loewis.de>
	<gq0t7194aiuock5t67gqvudokla2lr7hbp@4ax.com>
Message-ID: <d5nnsu$4lc$1@sea.gmane.org>

John Machin wrote:

> I find it a bit hard to imagine that the euro sign wouldn't get a fair
> bit of usage in Swedish data processing even if it's not their own
> currency.

it's spelled "Euro" or "EUR" in swedish.

(if you live in a country that use letters to represent its own currency,
you tend to prefer letters for "foreign" currencies as well)

(I just noticed that there's no euro sign on my swedish keyboard.  I've
never missed it ;-)

</F> 





From betty at bettybowers.com  Wed May 11 16:08:28 2005
From: betty at bettybowers.com (America's Best Christian)
Date: 11 May 2005 13:08:28 -0700
Subject: BluWater: God is not a man
References: <1115824563.613661.169620@g47g2000cwa.googlegroups.com>
	<1115839435.018664.70230@f14g2000cwb.googlegroups.com>
Message-ID: <1115842108.488383.65000@o13g2000cwo.googlegroups.com>

Jesus has a deplorable blind spot when it came to the nuances of
marketing a new religion.  Fortunately, since the apostle Paul was
completely oblivious to any of Jesus' teachings, he was unfettered by
this myopic shortcoming on the part of our Lord.

So Close to Jesus, He's Seen Me Without Make-up (once),

Mrs. Betty Bowers

America's Best Christian

www.bettybowers.com



From newsgroups at jhrothjr.com  Thu May 26 21:04:19 2005
From: newsgroups at jhrothjr.com (John Roth)
Date: Thu, 26 May 2005 19:04:19 -0600
Subject: Case Sensitive, Multiline Comments
References: <1117137316.140791.210430@g14g2000cwa.googlegroups.com>
Message-ID: <119csgm71mtsk68@news.supernews.com>

"Elliot Temple" <curi42 at gmail.com> wrote in message 
news:1117137316.140791.210430 at g14g2000cwa.googlegroups.com...
> Hi I have two questions.

...


> Also, why aren't there
> multiline comments?  Would adding them cause a problem of some sort?

As a matter of fact, yes. First, consider that as soon as you have
multi-line comments, someone is going to request nested multi-line
comments. (In other words, the compiler should check that the
embedded  comment is still correct.) That rapidly leads to madness.

Second, multi-line comments aren't really necessary; as someone
in the thread  commented, a decent editor or IDE will allow adding
or removing comments from a block of code easily. Python's
philosophy is to only add features when there is a use case that
will improve the language significantly, and commenting out a block
of code for testing isn't it. (It's also not the world's best practice,
but that's another subject.)

John Roth




>
> Thanks,
> Elliot
> 



From benji at benjiyork.com  Mon May 30 19:00:47 2005
From: benji at benjiyork.com (Benji York)
Date: Mon, 30 May 2005 19:00:47 -0400
Subject: Case Sensitive, Multiline Comments
In-Reply-To: <W5Lme.105911$Wl2.6373476@phobos.telenet-ops.be>
References: <1117137316.140791.210430@g14g2000cwa.googlegroups.com>	<z5adnQMsOLiL7AffRVn-hQ@comcast.com>	<mailman.256.1117477669.18027.python-list@python.org>	<d7fpbl$b1s$1@wake.carmen.se>	<mailman.261.1117484784.18027.python-list@python.org>
	<W5Lme.105911$Wl2.6373476@phobos.telenet-ops.be>
Message-ID: <429B9B1F.8050209@benjiyork.com>

Roel Schroeven wrote:
 > You haven't looked very well though: there are actually quite a lot
 > of extra spaces. Still, it's nicely done indeed.

Hmm.  I only saw doubled spaces after commas and periods.  That's
fairly standard practice, for the periods at least.  I don't know
if people regularly put two spaces after commas though.  I know I
don't.  I did spot a couple of extra quotation marks, but I guess
I can give him those. :)
--
Benji York


From onurb at xiludom.gro  Thu May 26 12:00:41 2005
From: onurb at xiludom.gro (bruno modulix)
Date: Thu, 26 May 2005 18:00:41 +0200
Subject: Access from one class to methode of other class
In-Reply-To: <3flu22F8g4u4U1@news.dfncis.de>
References: <3flu22F8g4u4U1@news.dfncis.de>
Message-ID: <4295f2aa$0$32750$626a14ce@news.free.fr>

VK wrote:
> Hi, all!
> 
> In my programm i have to insert a variable from class 2 to class 1 and I
> get error NameError: global name 'd' is not defined. 

Looking at your code snippet, I think you have a lot of other errors
before.

> 
> class 1:
>    self.entry = Entry(self.entryframe)
NameError : self is not defined

etc...

-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From littlejohn.75 at news.free.fr  Mon May 23 06:02:41 2005
From: littlejohn.75 at news.free.fr (F. Petitjean)
Date: 23 May 2005 10:02:41 GMT
Subject: what is addMethod ?
References: <1116841257.937815.61910@g43g2000cwa.googlegroups.com>
Message-ID: <4291aa41$0$4398$636a15ce@news.free.fr>

Le 23 May 2005 02:40:57 -0700, qwejohn at hotmail.com a ?crit :
> Hello,
> 
>    I saw some python open source project with many
> self.addMethod() functions (with 3 paramters)

Which "open source project" ? Which class in which module ?
> 
> What does self.addMethod() is good for ?
> 
Find where this method is defined : (with fgrep or findstr according to
your operating system) and then 
import NameOfModule
help(NameOfModule)


From hancock at anansispaceworks.com  Thu May 12 11:23:34 2005
From: hancock at anansispaceworks.com (Terry Hancock)
Date: Thu, 12 May 2005 10:23:34 -0500
Subject: Python Documentation (should be better?)
In-Reply-To: <17027.24756.661979.410118@montanaro.dyndns.org>
References: <5C99C308457E6D4EA5448EA52A66004A675A6E@or.mxim.com>
	<4282D0C5.3A8B3786@pauahtun.org>
	<17027.24756.661979.410118@montanaro.dyndns.org>
Message-ID: <200505121023.34213.hancock@anansispaceworks.com>

On Thursday 12 May 2005 08:57 am, Skip Montanaro wrote:
>     Ivan> I get that.  My question, cleverly concealed in a rant, was, "Why
>     Ivan> does clicking on the Documentation link at python.org NOT take me
>     Ivan> to docs.python.org?"
> I almost changed that link, but then reconsidered.  Compare
>     http://docs.python.org/
> with
>     http://www.python.org/docs/
[...]
> The original functional goal of the http://docs.python.org/ URL was to
> provide a cleaner isolation of "just the facts, Ma'am" so that Google could
> do a better job presenting documentation search results.  Previously, it was
> impossible to separate the mailing list archives from the documentation
> proper in Google searches.

Maybe a good compromise would be to have a search form on the
http://www.python.org/doc/ page labeled "Search Documentation"
which did a search on http://docs.python.org/ , then?

Though I see that "Browse Documentation" does indeed go to
http://docs.python.org .

Cheers,
Terry

--
Terry Hancock ( hancock at anansispaceworks.com )
Anansi Spaceworks  http://www.anansispaceworks.com



From david.tolpin at gmail.com  Thu May 12 15:39:31 2005
From: david.tolpin at gmail.com (david.tolpin at gmail.com)
Date: 12 May 2005 12:39:31 -0700
Subject: pyvm -- faster python
In-Reply-To: <7xbr7g8cni.fsf@ruckus.brouhaha.com>
References: <mailman.164.1115548611.29826.python-list@python.org>
	<1115561483.741761.212140@f14g2000cwb.googlegroups.com>
	<m102l2-9qr.ln1@home.rogerbinns.com>
	<mailman.264.1115716603.29826.python-list@python.org>
	<vu38l2-k5v.ln1@home.rogerbinns.com>
	<7xvf5qbir1.fsf@ruckus.brouhaha.com>
	<nt98l2-1e.ln1@home.rogerbinns.com>
	<7xpsvymlse.fsf@ruckus.brouhaha.com>
	<1115791624.856252.247890@z14g2000cwz.googlegroups.com>
	<7x1x8el18e.fsf@ruckus.brouhaha.com>
	<3eg2vnF2psplU1@individual.net>
	<7xis1pqdt0.fsf@ruckus.brouhaha.com>
	<pan.2005.05.12.15.53.10.176970@dalkescientific.com>
	<7xbr7g8cni.fsf@ruckus.brouhaha.com>
Message-ID: <1115926771.532243.281000@g44g2000cwa.googlegroups.com>

> I don't think Python can ever beat
> carefully coded C for running speed, but it can and should aim for
> parity with compiled Lisp.

But common lisp compilers often beat C compilers in speed for similar
tasks
of moderate complexity. In particular, CMUCL beats GCC in numerical
computations.

David



From modelnine at ceosg.de  Sat May 21 04:56:33 2005
From: modelnine at ceosg.de (Heiko Wundram)
Date: Sat, 21 May 2005 10:56:33 +0200
Subject: SQL Query via python
In-Reply-To: <428EBEEF.4040500@boonthavorn.com>
References: <200505202357.01579.jeffelkins@earthlink.net>
	<428EBEEF.4040500@boonthavorn.com>
Message-ID: <200505211056.36718.modelnine@ceosg.de>

Am Samstag, 21. Mai 2005 06:54 schrieb Sakesun Roykiattisak:
> Try
>
> cursor.execute (
> """
>   SELECT name, month, day ,category, city FROM bday
>   WHERE %s = %s
> """
>   %(arg1,arg2))

*argh* You don't do any quoting of SQL-parameters, and that's more than bad! 
(leaves you up to the mercy of SQL-injection attacks, for example)

What you basically want to have is something like the following:

# Make sure arg1 is actually just characters.
if not arg1.isalpha():
    raise RuntimeError, "trying to do SQL-injection attack?!"

# Now do query.
cursor.execute("""
SELECT name, month, day, category, city FROM body
WHERE %s = %%s
""" % (arg1,),
(arg2,))

See how I didn't just use arg1 to paste it in the query string, but checked it 
before trying the query to consist only of characters. You'd have to adjust 
this accordingly for field-names you use (maybe you use underscores, etc.). 
But, be sure that arg1 contains no ";"!

HTH!

-- 
--- Heiko.
  see you at: http://www.stud.mh-hannover.de/~hwundram/wordpress/
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From t-meyer at ihug.co.nz  Wed May 25 22:00:40 2005
From: t-meyer at ihug.co.nz (Tony Meyer)
Date: Thu, 26 May 2005 14:00:40 +1200
Subject: Checking for a full house
In-Reply-To: <ECBA357DDED63B4995F5C1F5CBE5B1E802F31834@its-xchg4.massey.ac.nz>
Message-ID: <ECBA357DDED63B4995F5C1F5CBE5B1E801B0F752@its-xchg4.massey.ac.nz>

> def removeAll(element, num2Rem, list):
>     l = list[:]
>     for num in range(0, num2Rem):
>         l.remove(element)
>     return l
> 
> def isfullHouse(roll):
>     for die in range(1,7):
>         if roll.count(die)==3:
>             l = removeAll(die, 3, roll)
>             if l[0]==l[1]:
>                 return 1
>     return 0
> 
> My questions is this: is there a better way to do this?  A way that's
> more natural to python, or just more efficient perhaps?

This is an alternative that doesn't muck about making a second list:

def isfullHouse(roll):
    has_pair = False
    has_triple = False
    for die in xrange(1,7):
        if has_pair and has_triple:
            return True
        count = roll.count(die)
        if count > 3:
            return False # easy out; can't have four/five and full house
        if count == 2:
            has_pair = True
        elif count == 3:
            has_triple = True
    return False

If you want it in one line (and have Python 2.4):

def isfullHouse(roll):
    return len(set(roll)) != 2

If you create a set from the list, it will remove duplicates.  If there are
3,4, or 5 different numbers, then you don't have a triplet.  (I assume that
[1,1,1,1,1] isn't a full house, or this answer is wrong, since that will
have the length be 1).

(These are both untested).

=Tony.Meyer



From philippe at philippecmartin.com  Sat May 14 11:07:58 2005
From: philippe at philippecmartin.com (Philippe C. Martin)
Date: Sat, 14 May 2005 15:07:58 GMT
Subject: Encryption with Python?
References: <1115324411.952821.150780@o13g2000cwo.googlegroups.com>
Message-ID: <ivohe.1477$ce6.1456@newssvr30.news.prodigy.com>

Hi,

I am a very happy user of http://www.amk.ca/python/code/crypto.html

Regards,

Philippe



Blake T. Garretson wrote:

> I want to save some sensitive data (passwords, PIN numbers, etc.) to
> disk in a secure manner in one of my programs.  What is the
> easiest/best way to accomplish strong file encryption in Python?  Any
> modern block cipher will do: AES, Blowfish, etc.  I'm not looking for
> public key stuff; I just want to provide a pass-phrase.
> 
> I found a few modules out there, but they seem to be all but abandoned.
>  Most seem to have died several years ago.  The most promising package
> is A.M. Kuchling's Python Cryptography Toolkit
> (http://www.amk.ca/python/code/crypto.html).
> 
> Is this the defacto Python encryption solution?  What does everyone
> else use?  Any other suggestions?  The SSLCrypto package
> (http://www.freenet.org.nz/python/SSLCrypto/) may be a good alternative
> too, but I am not sure if it is actively maintained.
> 
> Thanks,
> Blake



From quadric at primenet.com  Fri May 27 17:39:22 2005
From: quadric at primenet.com (quadric at primenet.com)
Date: Fri, 27 May 2005 14:39:22 -0700
Subject: Inserting a dictionary of lists into '__main__' of an embedded
	interpreter
Message-ID: <5.1.1.6.2.20050527143832.0304d440@pop3.globalcrossing.net>

Hi,

I have an application that has an embedded interpreter.  This application 
loads many
DLL's and passes a PyObject *  to each DLL that was gotten from the 
following call:

PyObject * pmod = PyImport_AddModule("__main__") ;


Later, in one of the many DLL's that interact with the embedded 
interpreter, I attempt to insert
a dictionary of lists into the module represented by the pointer 
'pmod'  passed to the DLL from the
main application.

The dictionary of lists is created with the following call:

PyObject * abm_dict = Py_BuildValue( "{s:O,s:O,s:O,s:O,s:O,s:O,s:O,s:O,s:O}" ,
					         "i_list" ,   i_list ,   "l_list"   ,   l_list  , 
"bpl_list"  , bpl_list,
                                                                   "rt_list" 
,  rt_list , "st_list"   ,st_list   ,  "u2_list"  , u2_list ,
                                                                    "t_list" 
, t_list   ,"ot_list"  , ot_list  ,  "plt_list" , plt_list
    					       );

where each item following a quoted string is a PyObject *  created by 
another Py_BuildValue  statement.

After building 'abm_dict' , I attempt to insert it into the embedded 
interpreter with the following call:

PyModule_AddObject( pmod , "abm_dict" , abm_dict );

The application crashes at this point.

Being a bit new to embedded Python, I don't readily see what I'm doing 
wrong.  Could one of you more
experienced guys save me a whole lot of time and point out the obvious to me?

Thanks for your help.










From qwweeeit at yahoo.it  Sat May 14 15:23:14 2005
From: qwweeeit at yahoo.it (qwweeeit at yahoo.it)
Date: 14 May 2005 12:23:14 -0700
Subject: Modifying a built-in function for logging purposes
Message-ID: <1116098593.970438.219860@g47g2000cwa.googlegroups.com>

Hi all,
I wonder if it is possible to change (temporarily) a built-in function
for logging purposes.
Let me explain:
I want to log all the 'open' operations, recording the file to be
opened, the "mode" (r/w/a...) and (possibly) the module which made the
call.
After that the 'open' can carry on following the standard built-in
path.
Possibly I don't want to have to modify the source of the application
to be logged.
If there is another solution, I am open to any suggestion...

Bye.



From http  Thu May 19 05:36:20 2005
From: http (Paul Rubin)
Date: 19 May 2005 02:36:20 -0700
Subject: Is Python suitable for a huge, enterprise size app?
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>
	<1116432325.497438.64580@g49g2000cwa.googlegroups.com>
	<1116433218.495131.71260@g49g2000cwa.googlegroups.com>
	<1116443474.565264.176640@g44g2000cwa.googlegroups.com>
	<7xd5rn93zi.fsf@ruckus.brouhaha.com>
	<mailman.198.1116493706.8733.python-list@python.org>
	<7xu0kza89r.fsf@ruckus.brouhaha.com>
Message-ID: <7xpsvna76z.fsf@ruckus.brouhaha.com>

Paul Rubin <http://phr.cx at NOSPAM.invalid> writes:
> ...  Do you think you
> could mention it in your Tkinter doc?  That would be a logical place
> for it.

Ehhh, specifically I meant it would be good to mention this in the
PhotoImage example in Chapter 16 of "An Introduction to Tkinter" (The
Canvas Image Item).  That's the example I followed and was confused as
heck why the image only appeared some of the time (I never saw it
actually appear and then disappear, but that's just luck).

Thanks again, I never would have figured this one out.


From phil-news-nospam at ipal.net  Tue May 24 17:52:05 2005
From: phil-news-nospam at ipal.net (phil-news-nospam at ipal.net)
Date: 24 May 2005 21:52:05 GMT
Subject: I want to ask you the most important question of your life. The
	quest
References: <1116946127.220677.235770@o13g2000cwo.googlegroups.com>
Message-ID: <d707m504o6@news3.newsguy.com>

In comp.lang.c RLG101166 at yahoo.com wrote:
| 
| THE MOST IMPORTANT QUESTION OF YOUR LIFE
| 
| This is the most important question of your life.
| 
| The question is: Are you saved?

^X^S

I am now :-)

-- 
-----------------------------------------------------------------------------
| Phil Howard KA9WGN       | http://linuxhomepage.com/      http://ham.org/ |
| (first name) at ipal.net | http://phil.ipal.org/   http://ka9wgn.ham.org/ |
-----------------------------------------------------------------------------


From flupke at nonexistingdomain.com  Thu May 12 10:56:39 2005
From: flupke at nonexistingdomain.com (flupke)
Date: Thu, 12 May 2005 14:56:39 GMT
Subject: subclass dialog or put in the resource files?
In-Reply-To: <wnDge.88593$A37.5358682@phobos.telenet-ops.be>
References: <wnDge.88593$A37.5358682@phobos.telenet-ops.be>
Message-ID: <H8Kge.88868$Q_1.5248096@phobos.telenet-ops.be>

flupke wrote:
> 
> I'm using wxPython and design the gui via wxglade. One of the gui 
> components is a simple dialog class that gets displayed when a user 
> exits the program.
> I want to use the same dialog but with a different text for closing 
> certain dialogs in the program. (it's a pure "do you want to exit 
> <insert screen name>" dialog)
> 
> What would i better use, knowing the rest of the gui is in a resource 
> (xrc) file:
> 
> 1. Find some way to put a standard exit dialog in the resource file and 
> then somehow try to set the message to the correct one.
> 
> 2. Make a simple dialog class that accepts the message to be displayed. 
> I could even use glade to generate the python code for a start.
> 
> What would be the better/cleaner/logical way to do this?
> 
> Thanks,
> Benedict

I found what i was looking for.
I first load the dialog from the resource files and then i change the 
text like this:

children = self.d_exit.GetChildren()
for control in children:
     if ( type(control) is wx.StaticText ):
         control.SetLabel("<new message>")

Benedict


From bj_666 at gmx.net  Tue May 31 16:50:34 2005
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: Tue, 31 May 2005 22:50:34 +0200
Subject: convert a string to tuple
References: <1117570449.887422.225670@g43g2000cwa.googlegroups.com>
Message-ID: <pan.2005.05.31.20.50.32.230460@gmx.net>

In <1117570449.887422.225670 at g43g2000cwa.googlegroups.com>, querypk wrote:

> how do I convert 
> b is a string  b = '(1,2,3,4)' to b = (1,2,3,4)

In [1]: b = '(1,2,3,4)'

In [2]: b[1:-1]
Out[2]: '1,2,3,4'

In [3]: b[1:-1].split(',')
Out[3]: ['1', '2', '3', '4']

In [4]: tuple(b[1:-1].split(','))
Out[4]: ('1', '2', '3', '4')

Ooops, you wanted ints in there:

In [5]: tuple(map(int, b[1:-1].split(',')))
Out[5]: (1, 2, 3, 4)

Ciao,
	Marc 'BlackJack' Rintsch


From lee_cullens at mac.com  Sun May  1 18:24:19 2005
From: lee_cullens at mac.com (Lee Cullens)
Date: Sun, 1 May 2005 18:24:19 -0400
Subject: My personal candidate for QOTW (was: Python interpreter in Basic
	or a Python-2-Basic translator.)
In-Reply-To: <20050501183319.B09171E4012@bag.python.org>
References: <20050501183319.B09171E4012@bag.python.org>
Message-ID: <e2903dff8392ed02e134218e020589b8@mac.com>


> From: Leif Biberg Kristensen <junkmail2 at solumslekt.org>
> Date: May 1, 2005 2:13:43 PM EDT
> To: python-list at python.org
> Subject: Re: My personal candidate for QOTW (was: Python interpreter 
> in Basic or a Python-2-Basic translator.)
>
>
> Cameron Laird skrev:
>
>> In article <1114953507.031865.244920 at g14g2000cwa.googlegroups.com>,
>> Engineer <pcolsen at comcast.net> wrote:
>> .
>> .
>> .
>>> The security 'droids have decided that since the MS Office Suite is a
>>> "standard" application then software written in MS Office VBA must be
>>> "safe."  Any other development environments (such as Java, Perl,
>> .
>> .
>> .
>
> This is clear evidence supporting the theory that being in charge of
> security and being able to think have no significant correlation.
>
> And, yes: +1 QOTW from me, too.
> -- 
> Leif Biberg Kristensen


I see it every day.  The "hangers-on" have too much invested in the MS 
quagmire to consider anything else.  It's a political thing, and yes 
yet another example of Plato's "Allegory of the Cave."  For example, a 
major financial institution offers their active trader application on 
Windows only, citing "security" considerations.  Stamping the MS Office 
Suite and VBA a standard is reminiscent of HR department policy - of 
course you know what floats to the top in corporate (as well as 
government) ranks.

QOTW? Only for lack of anything more original (no disrespect intended 
:~)

Lee C
"God save us from those that would save us"  -- my grandmother c1945


PS: Though I stick with mostly Unix anymore, I do know there are 
"software engineers" valiantly employing Python (in their toolbag) in 
the MS environment.
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From jason.mobarak at gmail.com  Fri May 13 12:54:54 2005
From: jason.mobarak at gmail.com (Jason  Mobarak)
Date: 13 May 2005 09:54:54 -0700
Subject: Safe eval, or how to get list from string
In-Reply-To: <1115999726.286709.140690@f14g2000cwb.googlegroups.com>
References: <1115999726.286709.140690@f14g2000cwb.googlegroups.com>
Message-ID: <1116003294.359835.244240@g43g2000cwa.googlegroups.com>

bwooste... at gmail.com wrote:
> if there is list1 = "[ 'filea', 'fileb', ]", I can get at list by
> doing:
> reallist = eval(list1)
> is there an easier/simpler method of doing the same thing as
realstring
> and reallist lines above?

http://twistedmatrix.com/users/moshez/unrepr.py

Example:

>>> from unrepr import unrepr
>>> unrepr("[ 'filea', 'fileb', ]")
['filea', 'fileb']



From RLG101144 at yahoo.com  Sun May 22 12:10:25 2005
From: RLG101144 at yahoo.com (RLG101144 at yahoo.com)
Date: 22 May 2005 09:10:25 -0700
Subject: I want to ask you the most important question of your life. The
	question is: Are you saved? It is not a question of how good
	you are, nor if you are a church member,
	but are you saved? Are you sure you will go to Heaven when you die? The
	reason some people don't know for sure if they are going to
	Heaven when they die is because they just don't know. The good
	news is that you can know for sure you are going to Heaven. May
	22, 2005 12:10:55 pm
Message-ID: <1116778225.166227.128130@z14g2000cwz.googlegroups.com>


THE MOST IMPORTANT QUESTION OF YOUR LIFE


This is the most important question of your life.


The question is: Are you saved?


It is not a question of how good you are, nor if you
are a church member, but are you saved?


Are you sure you will go to Heaven when you die?


The reason some people don't know for sure if they are
going to Heaven when they die is because they just
don't know.


The good news is that you can know for sure that you
are going to Heaven.


The Holy Bible describes Heaven as a beautiful place
with no death, sorrow, sickness or pain.


God tells us in the Holy Bible how simple it is to be
saved so that we can live forever with Him in Heaven.


"For if you confess with your mouth Jesus is Lord and
believe in your heart that God raised Him from the
dead, you will be saved." (Romans 10:9)


Over 2000 years ago God came from Heaven to earth in
the person of Jesus Christ to shed His blood and die
 on a cross to pay our sin debt in full.


Jesus Christ was born in Israel supernaturally to a
virgin Jewish woman named Mary and lived a sinless
life for thirty-three years.


At the age of thirty-three Jesus was scourged and
had a crown of thorns pressed onto His head then
Jesus was crucified.


Three days after Jesus died on a cross and was placed
in a grave He rose from the dead as He said would
happen before He died.


If someone tells you that they are going to die
and then three days later come back to life and it
actually happens then this person must be the real deal.


Jesus Christ is the only person that ever lived a
perfect sinless life.


This is why Jesus is able to cover our sins(misdeeds)
with His own blood because Jesus is sinless.


The Holy Bible says, "In Him(Jesus) we have redemption
through His blood, the forgiveness of sins..."
(Ephesians 1:7)


If you would like God to forgive you of your past,
present and future sins just ask Jesus Christ to be
your Lord and Saviour.


It doesn't matter how old you are or how many bad
things that you have done in your life including
lying and stealing all the way up to murder.


Just pray the prayer below with your mouth and mean it
from your heart and God will hear you and save you.


Dear Jesus Christ, I want to be saved so that I can
have a home in Heaven with You when I die. I agree
with You that I am a sinner. I believe that You love
me and want to save me. I believe that You bled and
died on the cross to pay the penalty for my sins and
that You rose from the dead. Please forgive my sins
and come into my heart and be my Lord and Saviour.
Thanks Lord Jesus Christ for forgiving me and saving
me through Your merciful grace. Amen.


Welcome to the family of God if you just allowed God
to save you.


Now you are a real Christian and you can know for sure
that you will live in Heaven forever when this life
comes to an end.


As a child of God we are to avoid sin(wrongdoing), but
if you do sin the Holy Bible says, "My dear children,
I write this to you so that you will not sin. But if
anybody does sin, we have one who speaks to the Father
in our defense Jesus Christ, the Righteous One."


Those of you that have not yet decided to place your
trust in the Lord Jesus Christ may never get another
chance to do so because you do not know when you will die.


Jesus said, "I am the way, the truth and the life: no one
can come to the Father(God)(in Heaven), but by me."
(John 14:6)


This means that if you die without trusting in Jesus Christ
as your Lord and Saviour you will die in your sins and be
forever separated from the love of God in a place called Hell.


The Holy Bible descibes Hell as a place of eternal
torment, suffering, pain and agony for all those who
have rejected Jesus Christ.


The good news is that you can avoid Hell by allowing
Jesus Christ to save you today. Only then will you
have true peace in your life knowing that no matter
what happens you are on your way to Heaven.


Praise the Lord!
Servant of the Lord Jesus Christ
Ronald L. Grossi


* Show this to your family and friends so they can also be saved.
* This message may get deleted so you may want to print a copy.
* Just press the [Ctrl][P] keys on your keyboard to print this page.


[Please Visit These Excellent Websites]

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http://www.thepassionofthechrist.com

Beware Of Cults
http://www.carm.org/cults/cult_list.htm

About Hell
http://www.equip.org/free/DH198.htm

Is Jesus God?
http://www.powertochange.com/questions/qna2.html

Free Online Bible 
http://www.biblegateway.com



From grahamd at dscpl.com.au  Wed May  4 00:15:15 2005
From: grahamd at dscpl.com.au (grahamd at dscpl.com.au)
Date: 3 May 2005 21:15:15 -0700
Subject: Mod_python
References: <1115173372.255405.214330@o13g2000cwo.googlegroups.com>
Message-ID: <1115180115.305076.291180@o13g2000cwo.googlegroups.com>


Gensek wrote:
> Python is obviously binary, but I compiled Apache and modpython. I
> restarted apache before using the config. I'm inclined to believe
that
> I'm doing everything right, but the computer isn't.

Try following through the directions/hints in:

  http://www.dscpl.com.au/projects/vampire/articles/modpython-001.html

A lot of the time people cannot get it working because they use the
instructions for mod_python 3.1.X when they actually have 2.7.X
installed. The newer instructions will not work on the older version.

Anyway, even if you will not follow the steps shown in the article,
you can use the hints in it as to what to look for and where.

BTW, best place to talk about mod_python is the mod_python mailing
list.

Graham



From fredrik at pythonware.com  Fri May  6 18:52:08 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Sat, 7 May 2005 00:52:08 +0200
Subject: Getting number of iteration
References: <d5g42o$jc5$00$1@news.t-online.com><mailman.103.1115395476.29826.python-list@python.org>
	<86ll6s5cuy.fsf@guru.mired.org>
Message-ID: <d5gs1v$4dv$1@sea.gmane.org>

Mike Meyer wrote:

> > n = 0
> > for x in lst:
> >     print "iteration %d on element %s" % (n, x)
> >     n += 1
>
> Just for the record, the old idiom was:
>
> for n in xrange(len(lst)):
>     x = lst[n]
>     print "iteration %d on element %s" % (n, x)

it was?  of the following four solutions,

    for n in xrange(len(lst)):
        x = lst[n]
        ...

    for n in range(len(lst)):
        x = lst[n]
        ...

    n = 0
    for x in lst:
        ...
        n += 1

    for x, n in enumerate(lst):
        ...

the xrange solution tends to be the slowest, especially for
relatively short lists (up to a 1000 elements, or so).

the exact details vary somewhat between Python versions,
but the += solution is always a good choice, and the xrange
solution is almost always a bad choice.

</F>





From andzy at imap-mail.com  Fri May 20 23:36:58 2005
From: andzy at imap-mail.com (News Sympatico)
Date: Fri, 20 May 2005 23:36:58 -0400
Subject: Inserting a tab with tab completion enabled on win32
Message-ID: <V1yje.6003$Wp.798194@news20.bellglobal.com>

I've followed the tab completion example given in the Library Reference 
docs for the rlcompleter module that makes the tab key do name 
completion.  That works but now you need another key stroke to insert an 
actual tab.

I've tried lines like:

readline.parse_and_bind("\C-o: tab-insert")

and they work fine under Linux but on Windows they raise a KeyError.

I'm using the readline package from UNC Python Tools on Python 2.4.

Does anyone know how to fix this or is there even some other way to 
insert an indent (do I have to type spaces?)?


From edreamleo at charter.net  Wed May  4 09:21:56 2005
From: edreamleo at charter.net (Edward K. Ream)
Date: Wed, 4 May 2005 08:21:56 -0500
Subject: ANN: Leo 4.3-b1
Message-ID: <q14ee.9209$cZ6.139@fe02.lga>

Leo 4.3 beta 1 is now available at http://sourceforge.net/projects/leo/

Leo 4.3 beta 1 completes all major features of Leo 4.3.  There are no known 
significant bugs.

The defining features of Leo 4.3:
---------------------------------
1. Leo now stores options in @settings trees, that is, outlines whose 
headline is '@settings'. When opening a .leo file, Leo looks for @settings 
trees not only in the outline being opened but also in various 
leoSettings.leo files. Users can create arbitrarily complex user options 
with @settings trees.

2. The Preferences command temporarily replaces the outline pane with an 
outline showing all the @settings trees in effect. The Preferences command 
also replaces the body pane with a "settings pane". This settings pane 
allows you to change the settings selected in the outline pane using 
standard gui widgets.

3. Leo now stores recent files information in .leoRecentFiles.txt files.

4. Leo's read/write code in leoAtFile.py has been rewritten to support 
user-defined tangling and untangling. This is a major cleanup of Leo's core.

5. Leo now contains an excellent Plugins Manager plugin. This plugin enables 
and disables plugins automatically and tells you everything you need to know 
about each plugin. This plugin also lets you download plugins from Leo's cvs 
site.

6. You can install third-party extensions in Leo's extensions directory. Leo 
will attempt to import such extensions from the extensions directory when 
normal imports fail. The distribution contains Python Mega Widgets in the 
extensions directory.

What people are saying about Leo
--------------------------------
"Another day, another breakthrough using Leo--now I realize Leo is the best 
URL bookmark manager there is. No more bookmarks menus or favorites lists 
inside the browser for me. With the @url directive I can just double click 
on the URL to open it in my browser. Leo lets me arrange the URLs in a 
hierarchy (or multiple hierarchies), attach notes to them, save clippings of 
things I read on the sites. It's sooo much better than anything the browsers 
have built in and it lets me easily use different browsers on different 
platforms and different machines (try that with the browsers' built-in 
bookmark managers)." -- Dan Winkler

"I am an amateur photographer. I use plain old 35mm. film for my pictures. 
Over the weekend, I used Leo to organize my lists of pictures. It is quite 
helpful--I can have separate nodes for pictures I have enlarged, as well as 
pictures I have submitted to our local camera club. Thanks!" -- Rich Reis

"Cloning is pure genius!... Leo's cloning facility, allows me to create 
several views on the CFA course material. My main view follows the 
prescribed study guide. Another view is organized like the textbooks. Yet 
another gives me a glossary of terms. And when I'm done, I'll have some nice 
libraries...I can re-use later in other projects." -- Michael Manti

More quotes at: http://webpages.charter.net/edreamleo/testimonials.html

What makes Leo special?
-----------------------
- Leo's outlines add a new dimension to programming.
- Leo shows you your code and data the way _you_ want to see them.
- Leo extends, completes and simplifies literate programming.
- Leo's script buttons bring scripts to data.

What is Leo?
------------
- A programmer's editor, an outlining editor and a flexible browser.
- A literate programming tool, compatible with noweb and CWEB.
- A data organizer and project manager. Leo provides multiple views
  of projects within a single outline.
- Fully scriptable using Python. Leo saves its files in XML format.
- Portable. leo.py is 100% pure Python.
- Open Software, distributed under the Python License.

Leo requires Python 2.2.1 or above and tcl/tk 8.4 or above.
Leo works on Linux, Windows and MacOs X.

Links:
------
Leo:      http://webpages.charter.net/edreamleo/front.html
Home:     http://sourceforge.net/projects/leo/
Download: http://sourceforge.net/project/showfiles.php?group_id=3458
CVS:      http://sourceforge.net/cvs/?group_id=3458
Quotes:   http://webpages.charter.net/edreamleo/testimonials.html

--------------------------------------------------------------------
Edward K. Ream   email:  edreamleo at charter.net
Leo: Literate Editor with Outlines
Leo: http://webpages.charter.net/edreamleo/front.html
--------------------------------------------------------------------




From tim.golden at viacom-outdoor.co.uk  Wed May 18 10:52:48 2005
From: tim.golden at viacom-outdoor.co.uk (Tim Golden)
Date: Wed, 18 May 2005 15:52:48 +0100
Subject: Problem listing services with wmi
Message-ID: <9A28C052FF32734DACB0A288A3533991EBB82A@vogbs009.gb.vo.local>

[Jean-S?bastien Guay]

| Hi again Tim,

Nice to hear back from you.

| Any reason I should know about that you haven't updated to 
| 2.4? I just got into Python, so I got the latest version, but if there's 
| something wrong with 2.4 I'd like to know...

No; there's no problem as such. At home, I'm running 2.4. 
It's just that for every version you run, you need versions
of any extension modules to be recompiled (or precompiled)
for that version. This only applies to extensions written in
C (not to normal .py modules). Since none of the language
features or bugfixes in 2.4 give me a pressing need to upgrade
for any of my business apps, I've taken the line of least risk.
(Also, Object Craft's MSSQL module which I've used consistently
for the last three years or so isn't available under 2.4, and
I don't have the necessary infrastructure to compile it).

| >It would be interesting
| >to know what it is about one or more services which gives WMI a
| >problem
| >  
| >
| 
| Which is what really puzzles me... From the list of 21 services that 
| were gotten by win32service and not wmi, I can't see any 
| service that's "special" in any way... 
| So without further investigation, I really couldn't say.

Oh, well. I was hoping one would have strange Unicodesque
characters in the service name or something equally glaring.
Is it possible there's simply an upper limit (ie it will
only list 87 services or whatever)? Doesn't seem likely,
but in this case nothing seems likely.

| >I think that all we're likely to achieve is, as I say, a more
| >robust solution; we're unlikely to get the missing service
| >if the core WMI can't see it for some reason. 
| >
| 
| But if we can get WMI to just "skip over" the offending service, at 
| least then we'll be able to know which one causes this...
| 
| >n_services = services.Count
| >
| 
| It now fails at the line above, with the following error :
| 
| Traceback (most recent call last):
|   File "<stdin>", line 1, in ?
|   File "G:\Python-2.4\Lib\site-packages\win32com\client\__init__.py", 
| line 455, in __getattr__
|     return self._ApplyTypes_(*args)
|   File "G:\Python-2.4\Lib\site-packages\win32com\client\__init__.py", 
| line 446, in _ApplyTypes_
|     return self._get_good_object_(
| pywintypes.com_error: (-2147352567, 'Exception occurred.', (0, 
| 'SWbemObjectSet',  'Critical error ', None, 0, -2147217398), None)

Well now, that's strange. Although probably not that strange,
as the .Count property may just internally enumerate all its
items, which would trigger the same problem.

| I had tried something similar yesterday, with the same 
| results. It would 
| seem (from what I can understand) that c.ExecQuery() just 
| makes a list of proxy objects, and that when you call Count on the set, it has to 
| create them all for real and that's where it fails when reaching the 
| "bad" service.

Ah, I see you had the same idea.

| 
| Thanks again, looking forward to trying other ideas.

I'm afraid I'm pretty much out of ideas. As no-one else
on this list is chiming in (and believe me, they would
if they had anything to add) I suspect that no-one else
is any the wiser. Since the problem seems to be within
WMI there's only so far I can go.

Just had an idea: look at the WMI group on Google:
http://groups-beta.google.com/group/microsoft.public.win32.programmer.wmi

There are several posts there talking about services
actually crashing when enumerated, and suggestions from
the MS people include checking the event log for more
info about the service, with the explanation that poorly
written service control code reacts badly to a  
SERVICE_CONTROL_INTERROGATE message. Might be worth
looking through in case it sheds any light.

Apart from that, unless someone comes up with a startling 
new direction, I'm afraid you're going to have to go with
the win32service solution. Please don't give up on WMI
though: it's a very useful general-purpose solution
to lots of information under Windows. Some things it does
better than others, but it's easy enough to try something
out to see if it works, and if it doesn't...

By the way, if you're doing win32 programming using Python
and you haven't already come across it, you will definitely
need Thomas Heller's ctypes at some point:
http://starship.python.net/crew/theller/ctypes/
It lets you get at C-level structures directly from Python.
If you had enough patience, you could reimplement the
WMI model using ctypes, but I suspect you'd hit exactly the
same error, only after considerably more effort!

Best of luck with Python, and let me know if any breakthrough
occurs.

TJG

________________________________________________________________________
This e-mail has been scanned for all viruses by Star. The
service is powered by MessageLabs. For more information on a proactive
anti-virus service working around the clock, around the globe, visit:
http://www.star.net.uk
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From flamesrock at gmail.com  Wed May 11 16:18:05 2005
From: flamesrock at gmail.com (flamesrock)
Date: 11 May 2005 13:18:05 -0700
Subject: windows directories for curr user
In-Reply-To: <mailman.330.1115797673.29826.python-list@python.org>
References: <mailman.330.1115797673.29826.python-list@python.org>
Message-ID: <1115842685.555385.65010@g47g2000cwa.googlegroups.com>

Thanks for the code Tom.

Unforunately, I get the following error message when trying to import
win32com in idle:

>>> from win32com.shell import shell, shellcon

Traceback (most recent call last):
  File "<pyshell#20>", line 1, in -toplevel-
    from win32com.shell import shell, shellcon
ImportError: No module named win32com.shell

Tim Golden wrote:
> [Dan Bishop]
> | flamesrock wrote:
> | > Hi,
> | >
> | > Short, maybe newbish question: Is there a python method for
finding
> | out
> | > who the current user is in the OS module?
> | >
> | > On older windows machines the directory I'm interested in is just
> | > "c://my documents", but how do I walk to the current users my
> | documents
> | > folder?
> |
> | path = '%s\\My Documents' % os.environ['USERPROFILE']
>
> Or, rather more generally:
>
> <code>
>
> from win32com.shell import shell, shellcon
> import win32api
>
> #
> # Don't need this to find the right folder,
> #  but since you asked...
> #
> print win32api.GetUserName ()
>
> #
> # This is the "personal files" which usually corresponds
> #  to the "My Documents" folder, but in my case points to
> #  h:\ since that's my home folder in my AD profile.
> #
> print shell.SHGetPathFromIDList (
>   shell.SHGetSpecialFolderLocation (0, shellcon.CSIDL_PERSONAL)
> )
>
> #
> # To see a list of possible CSIDL values:
> #
> for i in dir (shellcon):
>   if i.startswith ("CSIDL"):
>     print i
>
> </code>
>
>
>
________________________________________________________________________
> This e-mail has been scanned for all viruses by Star. The
> service is powered by MessageLabs. For more information on a
proactive
> anti-virus service working around the clock, around the globe, visit:
> http://www.star.net.uk
>
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From tlviewerSHRUB at yahooCHENEY.com  Fri May 13 23:06:47 2005
From: tlviewerSHRUB at yahooCHENEY.com (tlviewer)
Date: Sat, 14 May 2005 03:06:47 GMT
Subject: pygame on win32,  image.fromstring()
Message-ID: <bXdhe.215$h86.142@tornado.socal.rr.com>

hello,

The script below is a prototype for loading playing card images
from the bitmap resource in cards.dll (WinXP)

I like the idea of not keeping copies of the images
as files.

I'm able to extract the card images as files, then load
them in pygame as a surface, but I keep getting errors
when directly loading the image as string.

The call below never works, what I'm I doing wrong?
gm.image.fromstring()

I tried to use PIL too, but I can't tell yet if 
pygame will accept the image string from PIL.

# begin python
import win32api as wi 

import string as st 
import pygame as gm 
import Image as im
hnd = wi.LoadLibrary("c:/winnt/system32/cards.dll")

# this header works for 71x96x1BPP image
# must be one line
header = [ chr(0x42), chr(0x4D), chr(0xDE), chr(0x0D), chr(0x00), chr(0x00), chr(0x00), chr(0x00), chr(0x00), chr(0x00), chr(0x4A), chr(0x00), chr(0x00), chr(0x00)]

#sheader = ''.join([ chr(header[x]) for x in range(len(header))]) 
str = wi.LoadResource( hnd, 2, 11, 1033)
fp = open( "e:/batch/python/aceclub.bmp", "wt")

str = st.join(header,'') + str

fp.write( str) 
fp.close () 

wi.FreeLibrary(hnd)
print len(str)  

# gives: ValueError: String length does not equal format and resolution size
img = gm.image.fromstring(str,(71,96),"P")

#print img.mode  

#fp = open("e:/batch/msdn/Bitmap_11.bmp", "rb") 
obj = gm.image.load("e:/batch/python/aceclub.bmp")

print obj.get_rect()




From chris at keristor.net  Thu May 19 08:45:34 2005
From: chris at keristor.net (Chris Croughton)
Date: Thu, 19 May 2005 13:45:34 +0100
Subject: Comparing 2 similar strings?
References: <24a6d$428b9c10$d1b717f8$2300@PRIMUS.CA>
	<428BA05D.1010600@lsupcaemnt.com>
	<3d9n815cpmavos1fl6ts712h9qogdv3fur@4ax.com>
Message-ID: <slrnd8p2jd.g9n.chris@ccserver.keris.net>

On Thu, 19 May 2005 06:38:59 +1000, John Machin 
   <sjmachin at lexicon.net> wrote:

> On Wed, 18 May 2005 15:06:53 -0500, Ed Morton <morton at lsupcaemnt.com>
> wrote:
> 
>>William Park wrote:
>>
>>> How do you compare 2 strings, and determine how much they are "close" to
>>> each other?  Eg.
>>>     aqwerty
>>>     qwertyb
>>> are similar to each other, except for first/last char.  But, how do I
>>> quantify that?
>>
>>"However you like" is probably the right answer, but one way might be to 
>>compare their soundex encoding 
>>(http://foldoc.doc.ic.ac.uk/foldoc/foldoc.cgi?soundex) and figure out 
>>percentage difference based on comparing the numeric part.
> 
> Fantastic suggestion. Here's a tiny piece of real-life test data:
> 
> compare the surnames "Mousaferiadis" and "McPherson".

I remember a word processor, MultiMate, which used Soundex to do
matching for its suggestions for spelling correction.  One of my
cow-orkers typed the word 'agains' -- it was supposed to be 'against'
but 'again' would also have been a sensible suggestion.  MultiMate,
however, suggested neither of those reasonable words, it did suggest
"iguanas" amd "Utahns"...

(I wonder what it does with "Talliafero" and "Tolliver", and with
"Featherstone-Howe" and "Fanshaw"...)

The answer to the OP, which someone just pointed out to me on
comp.programming, is "edit distance" or "Levenshtein Distance"[1].  A
google search on either produces some good descriptions in the first few
links, including http://www.merriampark.com/ld.htm which has not only a
description of the algorithm but also source code in Java, C++ and
Visual Basic (no Awk, thought there are links to pages with
implementations in Perl, Python, Delphi and many more)...

[1] I would have spelt it 'Levenstein', and pronounced it 'Levenshtein'
in Schwaebisch (south German) fashion, but apparently the author of the
algorithm was one Vladimir I. Levenshtein and that is how he is credited
on the IEEE site.  There are also a number of Google hits under the
'stein' spelling, though...

Chris C


From ivanlan at pauahtun.org  Wed May 11 23:46:09 2005
From: ivanlan at pauahtun.org (Ivan Van Laningham)
Date: Wed, 11 May 2005 21:46:09 -0600
Subject: Python Documentation (should be better?)
References: <mailman.398.1115843305.29826.python-list@python.org>
	<428276e8$0$318$626a14ce@news.free.fr>
	<mailman.411.1115854727.29826.python-list@python.org>
	<Xns9653C72F4C83Dcastleamber@130.133.1.4>
Message-ID: <4282D181.74D328EA@pauahtun.org>

Hi All--

John Bokma wrote:
> 
> Ivan Van Laningham wrote:
> 
> >  Python docs are not as good as PHP docs.
> 
> Oh my. I hope you are just making that up. PHP documentation is
> guesstimated on how PHP works on average. Add the online comments clutter
> and you probably are better off reading the source.
> 

I didn't write that; I was riffing on Christopher's contention that
Python's docs ought to be awesome, which I think ought to be true.

Metta,
Ivan
----------------------------------------------
Ivan Van Laningham
God N Locomotive Works
http://www.andi-holmes.com/
http://www.foretec.com/python/workshops/1998-11/proceedings.html
Army Signal Corps:  Cu Chi, Class of '70
Author:  Teach Yourself Python in 24 Hours


From aahz at pythoncraft.com  Wed May 18 17:20:24 2005
From: aahz at pythoncraft.com (Aahz)
Date: 18 May 2005 14:20:24 -0700
Subject: Comparing 2 similar strings?
References: <24a6d$428b9c10$d1b717f8$2300@PRIMUS.CA>
Message-ID: <d6gbio$q1g$1@panix3.panix.com>

[trimmed to c.l.py]

In article <24a6d$428b9c10$d1b717f8$2300 at PRIMUS.CA>,
William Park  <opengeometry at yahoo.ca> wrote:
>
>How do you compare 2 strings, and determine how much they are "close" to
>each other?  Eg.
>    aqwerty
>    qwertyb
>are similar to each other, except for first/last char.  But, how do I
>quantify that?
>
>I guess you can say for the above 2 strings that
>    - at max, 6 chars out of 7 are same sequence --> 85% max
>
>But, for
>    qawerty
>    qwerbty
>max correlation is
>    - 3 chars out of 7 are the same sequence --> 42% max

difflib -- use the string as the sequence
-- 
Aahz (aahz at pythoncraft.com)           <*>         http://www.pythoncraft.com/

"And if that makes me an elitist...I couldn't be happier."  --JMS


From grante at visi.com  Mon May 30 12:23:23 2005
From: grante at visi.com (Grant Edwards)
Date: Mon, 30 May 2005 16:23:23 -0000
Subject: How to run functions in the background?
References: <mailman.252.1117469476.18027.python-list@python.org>
Message-ID: <119mffrd16cg95e@corp.supernews.com>

On 2005-05-30, Ognjen Bezanov <ognjen at mailshack.com> wrote:

> I need to find a way to 'fork' a function into the background
> yet still be able to send commands to it.

http://docs.python.org/lib/module-popen2.html

-- 
Grant Edwards                   grante             Yow!  I'm a fuschia bowling
                                  at               ball somewhere in Brittany
                               visi.com            


From grante at visi.com  Thu May  5 14:43:51 2005
From: grante at visi.com (Grant Edwards)
Date: Thu, 05 May 2005 18:43:51 -0000
Subject: How to detect a double's significant digits
References: <1115314620.902071.323410@f14g2000cwb.googlegroups.com>
	<mailman.53.1115315497.29826.python-list@python.org>
	<1115315863.050413.275390@g14g2000cwa.googlegroups.com>
	<s6ydnVxK45ow_-ffRVn-qQ@comcast.com>
	<1115317222.685180.62020@z14g2000cwz.googlegroups.com>
Message-ID: <117kqb7olrhcu77@corp.supernews.com>

On 2005-05-05, mrstephengross <mrstephengross at hotmail.com> wrote:
>>But, assuming you have your numbers as strings, I would suggest
> looking
> at str.split() and len().
>
> Well, the numbers are in fact stored as numbers,

Then your question is in fact meaningless.  The related
question that can be answered is "where is the least
significant '1' bit in the IEEE representation".  If that's
useful information, the struct module will help you find it.

> so string processing won't work.

That's the only way to answer the question you asked.

>>I'd give you an example, but this sounds kinda like a homework
>> assignment.
>
> The task may sound like it comes from class, but I can assure
> you that I am indeed a professional developer. I'm doing some
> rather intricate text processing / rendering stuff these days,
> and C++ is unfortunately none too handy for that sort of
> thing. Unfortunately, I have to use it for the task.

-- 
Grant Edwards                   grante             Yow!  Hmmm... A hash-singer
                                  at               and a cross-eyed guy were
                               visi.com            SLEEPING on a deserted
                                                   island, when...


From whocaresrmb at yahoo.com  Sun May 15 19:59:47 2005
From: whocaresrmb at yahoo.com (Johnny Gentile)
Date: 15 May 2005 16:59:47 -0700
Subject: thread title's getting shorter...
In-Reply-To: <rockon02-1505052236350001@1cust127.tnt6.adl1.da.uu.net>
References: <1116096706.696830.275140@g44g2000cwa.googlegroups.com>
	<Etvhe.1353573$8l.349001@pd7tw1no>
	<wemdnVcXpcOIIxvfRVn-tQ@comcast.com>
	<rockon02-1505052236350001@1cust127.tnt6.adl1.da.uu.net>
Message-ID: <1116201587.067054.220550@g49g2000cwa.googlegroups.com>

.



From bill.mill at gmail.com  Thu May 19 15:00:24 2005
From: bill.mill at gmail.com (Bill Mill)
Date: Thu, 19 May 2005 15:00:24 -0400
Subject: Convert from numbers to letters
In-Reply-To: <1116528750.285895.27720@f14g2000cwb.googlegroups.com>
References: <1116511005.900715.107260@o13g2000cwo.googlegroups.com>
	<mailman.209.1116513780.8733.python-list@python.org>
	<1116528750.285895.27720@f14g2000cwb.googlegroups.com>
Message-ID: <797fe3d40505191200333e30fb@mail.gmail.com>

On 19 May 2005 11:52:30 -0700, rh0dium <sklass at pointcircle.com> wrote:
> Call me crazy..  But it doesn't work..
> 

What doesn't work? What did python output when you tried to do it? It
is python 2.4 specific, it requires some changes for 2.3, and more for
earlier versions of python.

> for i, digraph in enumerate(sorted([''.join((x, y)) for x in alpha for
> y in [''] + [z for z in alpha]], key=len)):
>    globals()[digraph]=i+1
> 
> How do you implement this sucker??

Works just fine for me. Let me know what error you're getting and I'll
help you figure it out.

Peace
Bill Mill
bill.mill at gmail.com


From fredrik at pythonware.com  Wed May 11 11:55:28 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Wed, 11 May 2005 17:55:28 +0200
Subject: A Faster Way...
References: <mailman.297.1115744017.29826.python-list@python.org><slrnd82cms.2fg.klaus@main.szn.dk><1115773887.690435.19590@f14g2000cwb.googlegroups.com>
	<pan.2005.05.11.09.20.37.441308@bar.org>
Message-ID: <d5t9f8$e28$1@sea.gmane.org>

"stasz" wrote:

> > hmm, there's lots of ways, huh?  you can use itertools.zip instead of
> > builtin zip, or do:
> >
> >  map(None, list1, list2)
>
> Not!

huh?

> One should try a possible solution first,
> >>> l1 = range(10)
> >>> l2 = range(10,20)
> >>> l1
> [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
> >>> l2
> [10, 11, 12, 13, 14, 15, 16, 17, 18, 19]
> >>> map(None,l1,l2)
> [(0, 10), (1, 11), (2, 12), (3, 13), (4, 14), (5, 15), (6, 16), (7, 17), (8, 18), (9, 19)]

and that's different from zip in exactly what way?

>>> zip(l1,l2)
[(0, 10), (1, 11), (2, 12), (3, 13), (4, 14), (5, 15), (6, 16), (7, 17), (8, 18), (9, 19)]

(as Gene pointed out, the only difference between map(None, ...) and
zip(...) is that map() pads the shorter sequence, while zip() truncates
the long sequence).

</F>





From mefjr75 at hotmail.com  Sun May  1 17:18:44 2005
From: mefjr75 at hotmail.com (M.E.Farmer)
Date: 1 May 2005 14:18:44 -0700
Subject: compare two voices
In-Reply-To: <1114916457.795332.45220@f14g2000cwb.googlegroups.com>
References: <1114916457.795332.45220@f14g2000cwb.googlegroups.com>
Message-ID: <1114982324.918211.167050@o13g2000cwo.googlegroups.com>


Qiangning Hong wrote:
> I want to make an app to help students study foreign language.  I
want
> the following function in it:
>
> The student reads a piece of text to the microphone. The software
> records it and compares it to the wave-file pre-recorded by the
> teacher, and gives out a score to indicate the similarity between
them.
>
> This function will help the students pronounce properly, I think.
>
> Is there an existing library (C or Python) to do this?  Or if someone
> can guide me to a ready-to-implement algorithm?

As others have noted this is a difficult problem.
This library was developed to study speech and should be worth a look:
http://www.speech.kth.se/snack/
"""
 Using Snack you can create powerful multi-platform audio applications
with just a few lines of code. Snack has commands for basic sound
handling, such as playback, recording, file and socket I/O. Snack also
provides primitives for sound visualization, e.g. waveforms and
spectrograms. It was developed mainly to handle digital recordings of
speech, but is just as useful for general audio. Snack has also
successfully been applied to other one-dimensional signals.
"""
Be sure to check out the examples.

Might be worth a look:
http://www.speech.kth.se/projects/speech_projects.html
http://www.speech.kth.se/cost250/

You might also have luck with Windows using Microsoft Speech SDK ( it
is huge ).
Combined with Python scrtiptng you can go far.

hth,
M.E.Farmer



From jmgouzit at gmail.com  Tue May 24 04:09:03 2005
From: jmgouzit at gmail.com (jm)
Date: 24 May 2005 01:09:03 -0700
Subject: Access lotus notes using Python
In-Reply-To: <mailman.43.1116921750.18027.python-list@python.org>
References: <lWike.155$NV3.3324@news1.nokia.com>
	<mailman.43.1116921750.18027.python-list@python.org>
Message-ID: <1116922143.832385.36800@f14g2000cwb.googlegroups.com>

try this

import win32com.client
session = win32com.client.Dispatch('Lotus.NotesSession')
session.Initialize(r'pppppppp')
db = session.GetDatabase('',r'dddddddd.nsf')
view = db.GetView(r'vvvvvvvv')
doc = view.GetFirstDocument()
print doc.GetFirstItem('iiiiii').Values

domino return string as unicode



From Juergen.KahrsNO_SPAM at vr-web.de  Wed May 18 16:05:31 2005
From: Juergen.KahrsNO_SPAM at vr-web.de (=?ISO-8859-1?Q?J=FCrgen_Kahrs?=)
Date: Wed, 18 May 2005 22:05:31 +0200
Subject: Comparing 2 similar strings?
In-Reply-To: <24a6d$428b9c10$d1b717f8$2300@PRIMUS.CA>
References: <24a6d$428b9c10$d1b717f8$2300@PRIMUS.CA>
Message-ID: <3f1lgcF5gigiU1@individual.net>

Hello William,

> How do you compare 2 strings, and determine how much they are "close" to
> each other?  Eg.
>     aqwerty
>     qwertyb
> are similar to each other, except for first/last char.  But, how do I
> quantify that?

This is a classic problem of computer science.
Watch this:

  http://odur.let.rug.nl/~kleiweg/lev/
  http://www.levenshtein.net/

This solution has application in speech
recognition and also in DNA research.


From luis_lupe2XXX at netvisaoXXX.pt  Tue May 17 20:29:06 2005
From: luis_lupe2XXX at netvisaoXXX.pt (Luis P. Mendes)
Date: Wed, 18 May 2005 01:29:06 +0100
Subject: speeding up Python
Message-ID: <3evgihF56gtkU1@individual.net>

Hi,

I have a 1000 line python script that takes many hours to finish.  It is 
running with six inside 'for' loops.

I've searched the net for ways to speed up the proccess.

Psyco improves performance around 3% in this case which is not good enough.

How can I dramatically improve speed?

I tried to find some tool that converts Python to C automatically but 
couldn't.  As I don't know C, I think that weave and PyInline for 
example are out of the solution.

I'm using Linux.

Luis


From jwkenne at attglobal.net  Mon May 23 18:15:03 2005
From: jwkenne at attglobal.net (John W. Kennedy)
Date: Mon, 23 May 2005 18:15:03 -0400
Subject: What are OOP's Jargons and Complexities?
In-Reply-To: <1116843761.619249.144790@g47g2000cwa.googlegroups.com>
References: <1116843761.619249.144790@g47g2000cwa.googlegroups.com>
Message-ID: <bAske.14563$yx.14338@fe08.lga>

Xah Lee wrote:
> So, a simple code like this in normal languages:
> a = "a string";
> b = "another one";
> c = join(a,b);
> print c;
> 
> or in lisp style
> (set a "a string")
> (set b "another one")
> (set c (join a b))
> (print c)
> 
> becomes in pure OOP languages:
> public class test {
>   public static void main(String[] args) {
>     String a = new String("a string");
>     String b = new String("another one");
>     StringBuffer c = new StringBuffer(40);
>     c.append(a); c.append(b);
>     System.out.println(c.toString());
>     }
> }

The actual Java parallel to what you have written above is:

     String a = "a string";
     String b = "another one";
     String c = a + b;
     System.out.println (c);

> In the same way, numbers in Java have become a formalization of many
> classes: Double, Float, Integer, Long... and each has a bunch of
> "methods" to operate or convert from one to the other.

Byte, Short, Integer, Long, Char, Float and Double are wrapper classes, 
which exist chiefly to allow primitive content to be stored in 
collection classes.

byte, short, int, long, char, float, and double are primitives.

> Instead of
> aNumber = 3;
> print aNumber^3;
> 
> In Java the programer needs to master the ins and outs of the several
> number classes, and decide which one to use. (and if a program later
> needs to change from one type of number to another, it is often
> cumbersome.)

This has nothing to do with object orientation or classes, but with 
strong typing, which is important for program verification, and an 
inescapable necessity for compiling to efficient object code. Strong 
typing has been a feature of mainstream programming languages since the 
late 1950's.

-- 
John W. Kennedy
"The bright critics assembled in this volume will doubtless show, in 
their sophisticated and ingenious new ways, that, just as /Pooh/ is 
suffused with humanism, our humanism itself, at this late date, has 
become full of /Pooh./"
   -- Frederick Crews.  "Postmodern Pooh", Preface


From Scott.Daniels at Acm.Org  Sun May 29 12:47:24 2005
From: Scott.Daniels at Acm.Org (Scott David Daniels)
Date: Sun, 29 May 2005 09:47:24 -0700
Subject: 2D vector graphics Problem
In-Reply-To: <4299c4de$0$17099$5fc30a8@news.tiscali.it>
References: <4299c4de$0$17099$5fc30a8@news.tiscali.it>
Message-ID: <4299eb5d$1@nntp0.pdx.net>

Karl Max wrote:
> def rotate(self, w):
>  # This method belongs to the class Vertex
>  # w = angle expressed in radiants
>  x, y = self.coords
>  xRel, yRel = self.relPoint # The rotation should be relative to this
>  sin, cos = math.sin(w), math.cos(w)
>  x = x * cos - y * sin - xRel * cos + yRel * sin + xRel
>  y = x * sin + y * cos - xRel * sin - yRel * cos + yRel
>  self.coords = (x,y)

Your equation for y uses the new x, not the old x.  Be more free with
names.  Here's one way to write it:

class ...
     def rotate(self, angle):
         '''Rotate point angle radians around relPoint'''
         x, y = self.coords
         xRel, yRel = self.relPoint
         sin, cos = math.sin(angle), math.cos(angle)
         newx = x * cos - y * sin - xRel * cos + yRel * sin + xRel
         newy = x * sin + y * cos - xRel * sin - yRel * cos + yRel
         self.coords = newx, newy

If you define a testcase or two, you can catch things like this early.


test = Point(1, 1)
test.rotate(math.pi / 2)
x, y = test.coords
assert (x - -1) ** 2 + (y - 1) ** 2 < .00001


--Scott David Daniels
Scott.Daniels at Acm.Org


From skip at pobox.com  Mon May  9 13:38:04 2005
From: skip at pobox.com (Skip Montanaro)
Date: Mon, 9 May 2005 12:38:04 -0500
Subject: Inverse confusion about floating point precision
Message-ID: <17023.40956.917027.8804@montanaro.dyndns.org>

I understand why the repr() of float("95.895") is "95.894999999999996".
What I don't understand is why if I multiply the best approximation to
95.895 that the machine has by 10000 I magically seem to get the lost
precision back.  To wit:

    % python
    Python 2.3.4 (#12, Jul  2 2004, 09:48:10) 
    [GCC 3.3.2] on sunos5
    Type "help", "copyright", "credits" or "license" for more information.
    >>> 95.895
    95.894999999999996
    >>> 95.895 * 10000
    958950.0

Why isn't the last result "958949.99999999996"?  IOW, how'd I get back the
lost bits?

Thx,

Skip


From magicmas at spymac.com  Fri May 27 09:42:06 2005
From: magicmas at spymac.com (cheng)
Date: 27 May 2005 06:42:06 -0700
Subject: a html parse problem
Message-ID: <1117201326.001154.179640@f14g2000cwb.googlegroups.com>

hi,all

if the html like:
 <meta name = "description" content = "a test page">
 <meta name = "keywords"   content = "keyword1 keyword2">

if i use:
    def handle_starttag(self, tag, attrs):
        if tag == 'meta':
           self.attr = attrs
        self.headers += ['%s' % (self.attr)]
        self.attr = ''

will get the output:
[('name', 'description'), ('content', 'a test page')]

[('name', 'keywords'), ('content', 'keyword1 keyword2')]

is it some way that only take the content like " a test page, keyword1
, keywork2"



From sxanth at ceid.upatras.gr  Wed May 11 06:05:58 2005
From: sxanth at ceid.upatras.gr (Stelios Xanthakis)
Date: Wed, 11 May 2005 13:05:58 +0300
Subject: pyvm -- faster python
In-Reply-To: <7xpsvymlse.fsf@ruckus.brouhaha.com>
References: <mailman.164.1115548611.29826.python-list@python.org>
	<1115561483.741761.212140@f14g2000cwb.googlegroups.com>
	<m102l2-9qr.ln1@home.rogerbinns.com>
	<mailman.264.1115716603.29826.python-list@python.org>
	<vu38l2-k5v.ln1@home.rogerbinns.com>
	<7xvf5qbir1.fsf@ruckus.brouhaha.com>
	<nt98l2-1e.ln1@home.rogerbinns.com>
	<7xpsvymlse.fsf@ruckus.brouhaha.com>
Message-ID: <4281D906.5000904@ceid.upatras.gr>

Paul Rubin wrote:
> 
> I hope that PyPy will replace CPython once it's solid enough.  Trying
> to stay backwards compatible with the legacy C API doesn't seem to me
> to be that important a goal.  Redoing the library may take more work
> than the Prothon guy was willing to do for Prothon, but PyPy has more
> community interest and maybe can attract more resources.

I didn't know much about PyPy.  It seems that pyvm is *exactly* what
pypy needs to boost its performance.  Does pypy has the vm in python
as well?  Does pypy have a compiler that produces 2.4 bytecodes?

I think the next step in speeding up python (not that it's slow, I'm
in the group of people that don't think Python is slow), is the AST
compiler.  An AST compiler for CPython is in the works AFAIK, but it
would be more powerful in written in python.  It would be also easy
to have 'alternative' compilers that, for example are not whitespace
sensitive, or the code looks like perl :), but they all produce python
bytecode.


Stelios


From dcrespo at gmail.com  Tue May  3 10:40:56 2005
From: dcrespo at gmail.com (dcrespo)
Date: 3 May 2005 07:40:56 -0700
Subject: Python & SQLite
In-Reply-To: <mailman.86.1115114086.6583.python-list@python.org>
References: <d57g8v$n4c$1@sunce.iskon.hr>
	<mailman.86.1115114086.6583.python-list@python.org>
Message-ID: <1115131256.058058.139980@o13g2000cwo.googlegroups.com>

Does PySQLite run on Linux?

Daniel



From onurb at xiludom.gro  Thu May 26 11:35:46 2005
From: onurb at xiludom.gro (bruno modulix)
Date: Thu, 26 May 2005 17:35:46 +0200
Subject: Python analog of Ruby on Rails?
In-Reply-To: <mailman.107.1117051304.18027.python-list@python.org>
References: <mailman.100.1117039885.18027.python-list@python.org>	<4294adc3$0$2526$626a14ce@news.free.fr>
	<mailman.107.1117051304.18027.python-list@python.org>
Message-ID: <4295ecd3$0$6932$626a14ce@news.free.fr>

Christopher J. Bottaro wrote:
> bruno modulix wrote:
> 
(snip)
>
> Cool signature, can anyone do a Python one that I can leech?  =)

You mean this ?-)

python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"

-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From black.bird at NOSPAMtiscali.it  Mon May  2 16:48:49 2005
From: black.bird at NOSPAMtiscali.it (Michele Ferretti)
Date: Mon, 02 May 2005 20:48:49 GMT
Subject: WordPress Python Library 1.0
Message-ID: <Rmwde.850131$b5.37722456@news3.tin.it>

http://www.blackbirdblog.it/programmazione/progetti/28

-- 

Michele Ferretti

ICQ#: 14491159
Skype: m.ferretti79
black DOT bird AT tiscali DOT it
www.blackbirdblog.it


From carroll at nospam-tjc.com  Sat May 28 10:40:43 2005
From: carroll at nospam-tjc.com (Terry Carroll)
Date: Sat, 28 May 2005 07:40:43 -0700
Subject: Is there already a Python module to access the USPTO web site?
Message-ID: <th0h911kqgkpreepv3sshork93j9op8svd@4ax.com>

I have the need to run periodic searches on the US Patent and
Trademark Office website, <http://www.uspto.gov/>.  I need a Python
module to do this.  Before I reinvent the wheel, I thought I'd check
to see if anyone knew of such a beast.

For instance, I'd like to be able to pass an argument like one of
these:

  an/"dis corporation"
  in/newmar-julie

to http://patft.uspto.gov/netahtml/search-adv.htm and get a list of
all the patents owned by Dis Corporation, or invented by the 1960s
Catwoman actress; or pass a patent number like 4,150,505 to
http://patft.uspto.gov/netahtml/srchnum.htm to bring up a particular
patent.

Then I want to be able to parse out the patent metadata, e.g. inventor
names, dates filed and issued, etc.

Has this already been done?

The closest my google searches have turned up is
http://hacks.oreilly.com/pub/h/1724 , but that turns out to be Perl
rather than Python, and not quite dead-on anyway.




From cpu.crazy at gmail.com  Wed May 18 17:29:44 2005
From: cpu.crazy at gmail.com (CPUFreak91)
Date: 18 May 2005 14:29:44 -0700
Subject: Looking for bored python newbies
In-Reply-To: <1116423151.573145.57920@f14g2000cwb.googlegroups.com>
References: <1116423151.573145.57920@f14g2000cwb.googlegroups.com>
Message-ID: <1116451784.302828.198650@o13g2000cwo.googlegroups.com>

aack stupid web browser, thought I lost it all!



From ordnancemarine at yahoo.com  Sun May  8 17:45:19 2005
From: ordnancemarine at yahoo.com (les)
Date: Sun, 08 May 2005 21:45:19 GMT
Subject: Clueless with cPickle
References: <pan.2005.05.08.21.27.33.22267@yahoo.com>
	<2Hvfe.85711$te6.5343369@phobos.telenet-ops.be>
Message-ID: <pan.2005.05.08.21.45.22.704381@yahoo.com>

OK, looks like it is time for a break!

Thanks for the replies!



From martin at v.loewis.de  Tue May 31 18:06:29 2005
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Wed, 01 Jun 2005 00:06:29 +0200
Subject: Python 2.5 CVS broken for HP-UX platform?
In-Reply-To: <mailman.290.1117548448.18027.python-list@python.org>
References: <mailman.290.1117548448.18027.python-list@python.org>
Message-ID: <429cdfe5$0$31291$9b622d9e@news.freenet.de>

mg wrote:
> While trying to compile Python 2.5 from the nighlty CVS image, it raises
> the following errors on HP-UX. This disables me the use of HP-UX for
> some projects:

Please submit patches to sf.net/projects/python.

Thanks,
Martin


From ml at dynkin.com  Mon May  2 08:13:19 2005
From: ml at dynkin.com (George Yoshida)
Date: Mon, 02 May 2005 21:13:19 +0900
Subject: Using wildcards...
In-Reply-To: <1115031662.593097.172810@z14g2000cwz.googlegroups.com>
References: <1115031662.593097.172810@z14g2000cwz.googlegroups.com>
Message-ID: <d555go$sbq$1@dojima-n0.hi-ho.ne.jp>

Harlin Seritt wrote:
> {1:1} Random text here. {1:2} More text here. and so on.
> 
> Of course the {*} can be of any length, so I can't just do .split()
> based on the length of the bracket text. What I would like to do is to
> .split() using something akin to this:
> 
> textdata.split('{*}') # The '*' being a wildcard
> 
> Is this possible to do? If so, how is it done?
> 

You should look into re module.
regex has more flexible features for text processing than string
  module or methods.

- Regular expression operations
   http://docs.python.org/lib/module-re.html
- HOWTO
   http://www.amk.ca/python/howto/regex/

In your case, the code would go like this:

   >>> text = '{1:1} Random text here. {1:2} More text here. and so on.'
   >>> import re
   >>> pattern = re.compile('{\d+:\d+}')
   >>> pattern.split(text)
   ['', ' Random text here. ', ' More text here. and so on.']

--
george

http://www.dynkin.com/


From theller at python.net  Wed May  4 09:27:45 2005
From: theller at python.net (Thomas Heller)
Date: Wed, 04 May 2005 15:27:45 +0200
Subject: py2exe and library.zip
References: <mailman.76.1115095357.6583.python-list@python.org>
	<5uadnUTTqv6Iw-rfRVn-qw@powergate.ca>
	<mailman.129.1115156250.6583.python-list@python.org>
	<maednQTrx_iJLOXfRVn-hA@powergate.ca>
	<just-EE0D70.14515904052005@news1.news.xs4all.nl>
Message-ID: <r7gnm88e.fsf@python.net>

Just <just at xs4all.nl> writes:

> In article <maednQTrx_iJLOXfRVn-hA at powergate.ca>,
>  Peter Hansen <peter at engcorp.com> wrote:
>
>> [ ... ] (Note to self: check if zip files that can 
>> be in sys.path can be compressed,
>
> Yes.
>
>> and if py2exe compresses them.)
>
> Don't know, but I assume yes.

There's an option for that, because it slows down the imports.

Thomas


From dalke at dalkescientific.com  Mon May 16 09:58:08 2005
From: dalke at dalkescientific.com (Andrew Dalke)
Date: Mon, 16 May 2005 13:58:08 GMT
Subject: Newbie : checking semantics
References: <1115503520.392357.230620@f14g2000cwb.googlegroups.com>
	<87d5rrsh7h.fsf@snobis.de>
Message-ID: <pan.2005.05.16.13.58.07.671337@dalkescientific.com>

Stefan Nobis wrote:
> The other point is a missing (optional) statement to end blocks
> (so you optional don't have to mark block via whitespace). IMHO
> this comes very handy in some cases (like mixing Python and HTML
> like in PSP). From my experience i also would say beginners have
> quite some problems with only whitespace marking blocks (but it
> also has some benefits).

When you say "beginners" is that people with no previous
programming experience or those who have done C/Java/etc. language
which uses {}s?


				Andrew
				dalke at dalkescientific.com



From bvande at po-box.mcgill.ca  Mon May 30 03:15:21 2005
From: bvande at po-box.mcgill.ca (Brian van den Broek)
Date: Mon, 30 May 2005 03:15:21 -0400
Subject: prime number
In-Reply-To: <1117435844.389867.193900@g49g2000cwa.googlegroups.com>
References: <1117421732.677244.237730@g49g2000cwa.googlegroups.com>
	<86wtphtm3f.fsf@guru.mired.org>
	<1117435844.389867.193900@g49g2000cwa.googlegroups.com>
Message-ID: <429ABD89.2090809@po-box.mcgill.ca>

lostinpython said unto the world upon 2005-05-30 02:50:
> It is a homework assignment from a book but not for a class.  I'm
> trying to teach my self some basic programming before I have to take it
> in college.  If I show enough understanding of the subject, my advisor
> will let me forgo Intro. to Programming and go into Intro. to C++.
> What civil engineers need with all this programming is beyond me.  We
> have to learn another language to program our CADD software, which I
> find much easier than this.  But needless to say, I'm stumped on this
> problem.  I keep ending up in a never ending loop.
> 
> Shanna

Hi Shanna,

Since you are just beginning, I'd like to recommend the tutor list 
<http://mail.python.org/mailman/listinfo/tutor>. It is not that 
newcomers are not welcome here. But the folks who populate the tutor 
list are particularly good at answering neophytes' questions at the 
level.

Since you've got some code together, even though it isn't doing what 
you want, you've already got a decent start for getting help. Post the 
question and the code to the tutor list and I'd not be surprised if 
you will soon be well on your way to solving your problem.

Best,

Brian vdB
Who owes much of what he knows about Python to the tutor list.



From danb_83 at yahoo.com  Wed May 11 01:59:53 2005
From: danb_83 at yahoo.com (Dan Bishop)
Date: 10 May 2005 22:59:53 -0700
Subject: Python Args By Reference
In-Reply-To: <1115790189.005940.158030@f14g2000cwb.googlegroups.com>
References: <1115769308.136143.74080@f14g2000cwb.googlegroups.com>
	<1182j1daaepv6f4@corp.supernews.com>
	<1115787330.723188.295610@f14g2000cwb.googlegroups.com>
	<7xbr7igy12.fsf@ruckus.brouhaha.com>
	<1115790189.005940.158030@f14g2000cwb.googlegroups.com>
Message-ID: <1115791193.521636.220440@f14g2000cwb.googlegroups.com>

ncf wrote:
> As I fail to see how an array could be used in this (my own
> stupidity?), would you have any such example? For reference, I'm
trying
> to translate this: http://www.cr0.net:8040/code/crypto/sha256/
(Inside
> sha256_process).
>
> Once again, thanks for the patience, I'm still picking up on all the
> little tid-bits. :)


def P(arr, x, k):
   a, b, c, d, e, f, g, h = arr
   temp1 = arr[7] + S3(arr[4]) + F1(*arr[4:7]) + k + x
   temp2 = S2(arr[0]) + F0(*arr[:3])
   arr[3] += temp1
   arr[7] = temp1 + temp2

K = [0x428A2F98, 0x71374491, 0xB5C0FBCF,
     0xE9B5DBA5, 0x3956C25B, 0x59F111F1,
     0x923F82A4, 0xAB1C5ED5, 0xD807AA98]

...

for i in xrange(9):
   P(arr, w[i], K[i])
   if i != 8: # don't rotate the last time
      arr = [arr[-1]] + arr[:-1] # rotate arr


The last line moves the last element of arr to the beginning (so the
positions are correct for the call to P).



From aa at hanmail.net  Thu May 26 07:06:50 2005
From: aa at hanmail.net (Äڳݴº½º)
Date: Thu, 26 May 2005 20:06:50 +0900
Subject: It's just a test.. sorry
Message-ID: <d74aci$aif$1@news1.kornet.net>

sorry




From bronger at physik.rwth-aachen.de  Wed May 11 07:56:48 2005
From: bronger at physik.rwth-aachen.de (Torsten Bronger)
Date: Wed, 11 May 2005 13:56:48 +0200
Subject: Python Graphing Utilities.
References: <-dadnS0X7IVccR3fRVn-uQ@entouch.net>
	<797fe3d405051010392c00011f@mail.gmail.com>
	<mailman.320.1115772826.29826.python-list@python.org>
	<87psvycqej.fsf@wilson.rwth-aachen.de>
	<mailman.340.1115812092.29826.python-list@python.org>
Message-ID: <87mzr2f01r.fsf@wilson.rwth-aachen.de>

Hall?chen!

Bill Mill <bill.mill at gmail.com> writes:

> On 5/11/05, Torsten Bronger <bronger at physik.rwth-aachen.de> wrote:
>
>> Fernando Perez <fperez.net at gmail.com> writes:
>> 
>>> [...]
>>>
>>> [...]  Matplotlib is very good, has an active development
>>> community, and it is designed from the ground up not only as a
>>> library for rendering plots to screen/disk, but also for
>>> embedding into guis (with support for Tk, WX, GTK, QT and FLTK).
>> 
>> Why not for Gnuplot, by the way?
>> 
>> On sceen, matplotlib looks extremely good, however, I still need
>> Gnuplot for the hardcopy version[*].  It *seems* to me that the
>> programming interfaces are quite different, so a Gnuplot backend
>> for matplotlib would be helpful for me.
>
> By hardcopy version, I assume you mean Postscript?

Not really.  Gnuplot's output is LaTeX with a couple of native
Postscript directives inbetween.  It's inluded into my document with
"\input plot.plt" rather than "\includegraphics{plot.eps}".

I mentioned the advantages of this approach in the footnote:

> [...]
>
>> [*] because of the "pslatex" backend, which means that the plot
>> is typeset by the same LaTeX run as your document --> consistent
>> fonts, TeX-quality formulae

Tsch?,
Torsten.

-- 
Torsten Bronger, aquisgrana, europa vetus


From philippe at philippecmartin.com  Sun May 22 08:28:06 2005
From: philippe at philippecmartin.com (Philippe C. Martin)
Date: Sun, 22 May 2005 12:28:06 GMT
Subject: Newbie python design question
References: <d6pq8b$6ms$1@nwrdmz02.dmz.ncs.ea.ibs-infra.bt.com>
Message-ID: <qV_je.11$4N2.2@newssvr30.news.prodigy.com>

Hi,

I C I usually use switch for my FSMs, in Python however I usually use if +
elif ....

Your question makes me realize it would be trivial to use a dictionnary in
case the FSM had too many states, the key being the state and the item the
method to handle the state.

Regards,

Philippe






Michael wrote:

> Hi,
> I'm trying to write a script to parse a .cpp file and begin to create a
> 'translational unit'.
> To do this i need to:
> 
> Go through the file and remove all 'C' comments as
> /* Comment 1*/
> (can be on multiple lines)
> 
> Go through and remove all 'C++' comments, anything between // and '\n'
> char.
> 
> The start at the top, and work the way through, with the following valid
> terms:
> 
> #include <filename>
> #include "filename"
>     - copy the contents of filename to this point in the file and
>     continue.
> 
> #define X Y
>     -Store the term X,Y in DefineDictionary, then later if X is
>     encountered,
> substitute Y.
> 
> namespace n
> {
> 
> };
>     -a  namespace, can contain classes, functions and sub-namespaces
> 
> class c
> {
> 
> 
> };
>     -a class.
> 
> 
> If i were to process this in C++, i would create some form of
> statemachine, similar to a regex engine... I would just like some ideas on
> the easiest way to implment this in python!!
> 
> Regards
> 
> Mike



From vincent at visualtrans.de  Sat May 14 16:12:54 2005
From: vincent at visualtrans.de (vincent wehren)
Date: Sat, 14 May 2005 22:12:54 +0200
Subject: Multiple "cmp"s chained one after another
References: <d64io9$s6o$05$1@news.t-online.com>
	<d64pgi$tc8$1@news2.zwoll1.ov.home.nl>
	<d65h73$fgr$02$2@news.t-online.com>
Message-ID: <d65m47$cmi$1@news2.zwoll1.ov.home.nl>


"Volker Grabsch" <volker_grabsch at v.notjusthosting.com> schrieb im 
Newsbeitrag news:d65h73$fgr$02$2 at news.t-online.com...
| vincent wehren wrote:
| >
| > If you don't care about the year, why not just "normalize" the year
| > to all be the same using the replace method of the date instance?
|
| That's a very bad idea. In my example, this would work, but in "reality"
| I don't sort datetime objects, of course! (Is there any real application
| where you want to do that?)
|
| Instead, I'm sorting "Person" objects using a "birthday" attribute.
| Since I use these Person objects also in other places, they should never
| be modified without just to be sorted. In general, the number side effects
| should always be minimized.

Can you explain where you see a modification to the orginal object 
happening?
(or in any of the other solutions proposed for that matter...)

Not here I hope:

|
| > datesNorm = [obj.replace(year=1900) for obj in (dates)]
| > datesNorm.sort()

If you print datesNorm, you'll see:

[datetime.date(1900, 12, 2), datetime.date(1900, 12, 3), datetime.date(1900, 
12, 6), datetime.date(1900, 12, 7)]

However, dates is still the same:

[datetime.date(2004, 12, 2), datetime.date(2001, 12, 3), datetime.date(2002, 
12, 6), datetime.date(1977, 12, 7)]

|
| This code would go bad especially in my situation, where my "Person"
| objects are SQLObjects, thus the "normalisation" would be written into
| the database. Okay, one could use transactions and rollback", but I
| think, my point is clear now.

Since you wouldn't need to change the attribute object to
perform a sort (on the instances) using it (or portions of it) as key, it's 
not.
Or is there something fundamental I am missing about your particular use 
case?

| Nevertheless, I think you idea is very interesting. Is there any "real"
| application where normalizing just for sorting would be reasonable?

How about a case-insensitive sort of strings? (uppering being the 
normalization step)
Or getting rid of accented / special characters before sorting.
These sound like fairly straight-forward use cases to me ;)

Anyway, I was doing some SQL this morning where getting rid of portions of 
'datetime' fields in
a WHERE clause is sometimes just the ticket - hence the connection.


--

Vincent


|
| -- 
| Volker Grabsch
| ---<<(())>>---
| \frac{\left|\vartheta_0\times\{\ell,\kappa\in\Re\}\right|}{\sqrt
| [G]{-\Gamma(\alpha)\cdot\mathcal{B}^{\left[\oint\!c_\hbar\right]}}} 




From devrim.erdem at gmail.com  Tue May 24 09:01:21 2005
From: devrim.erdem at gmail.com (DE)
Date: 24 May 2005 06:01:21 -0700
Subject: Terminating a thread from the parent
In-Reply-To: <mMAke.99663$Ry3.5793991@phobos.telenet-ops.be>
References: <1116869282.045234.239040@g14g2000cwa.googlegroups.com>
	<mMAke.99663$Ry3.5793991@phobos.telenet-ops.be>
Message-ID: <1116939681.609436.211840@o13g2000cwo.googlegroups.com>

I appreciate your posts guys. It answers my questions and I like the
idea of overriding join method. I will use this one.



From marc.wyburn at gb.unisys.com  Thu May  5 05:36:49 2005
From: marc.wyburn at gb.unisys.com (marc.wyburn at gb.unisys.com)
Date: 5 May 2005 02:36:49 -0700
Subject: using variables with modules
Message-ID: <1115285809.074451.171110@z14g2000cwz.googlegroups.com>

Hi, I am trying to move away from Windows only scripting to Python.
I've written a quick script that will pull the product version from the
client registry.  I can get the IP addresses from a file into a list
and then pull each element in the list using the for loop.  I am
setting each element to a varuable ClientIP.  When I try to use that
variable in _winreg values it is not substituting the element from the
list.  If I type the list value straight into the _winreg command it
works fine. The IPaddresses in the list are surrounded by quotes.  So

1. can I use variables with modules? (I have assumed that I can!)
2. does putting quotes around the IPaddress in the list create a
problem (my list is something like ["192.168.0.1","192.168.0.2"]

I've also tried not having the list elements in quotes and using %s
substitution in the _winreg command.

Any help would be much appreciated, Cheers, MW.

#Query ProductName in windows Registry

import _winreg
import sys

readfile = open("c:\scripts\ip.txt", 'r')
IPList = readfile.readlines()

for ClientIP in IPList:
	print ClientIP
	key = _winreg.ConnectRegistry(ClientIP, _winreg.HKEY_LOCAL_MACHINE)
	hkey = _winreg.OpenKey(_winreg.HKEY_LOCAL_MACHINE,
"SOFTWARE\Microsoft\Windows NT\CurrentVersion")
	OSver=_winreg.QueryValueEx( hkey, "ProductName")
	print OSver

print "Exiting Script"
sys.exit()



From bokr at oz.net  Tue May 10 00:25:25 2005
From: bokr at oz.net (Bengt Richter)
Date: Tue, 10 May 2005 04:25:25 GMT
Subject: Resize an Image without PIL
References: <1115657494.333985.278010@f14g2000cwb.googlegroups.com>
Message-ID: <42803629.1134744015@news.oz.net>

On 9 May 2005 09:51:34 -0700, querypk at gmail.com wrote:

>Hi I would like to know how to resize an Image without using python
>Imaging library.
>
You don't say how your image is represented, nor whether you require
the same representation on both ends of the transformation. You don't
say anything about the size proportions, e.g., 2:1 vs 2:1.5 etc., nor
how you expect pixel interpolation/resampling to be done, not the context
in which your resizing is supposed to happen, or even a hint about your
paltform, or what kind of advice you might understand or want, or why.
In short, you're depending too much on mind reading ;-)

Regards,
Bengt Richter


From cjbottaro at alumni.cs.utexas.edu  Wed May 11 15:54:45 2005
From: cjbottaro at alumni.cs.utexas.edu (Christopher J. Bottaro)
Date: Wed, 11 May 2005 14:54:45 -0500
Subject: Python Documentation (should be better?)
References: <mailman.389.1115837608.29826.python-list@python.org>
	<rs2dnWXMCe-Rwx_fRVn-qw@comcast.com>
Message-ID: <d5tnfo$1eg$1@sea.gmane.org>

Steven Bethard wrote:

> Christopher J. Bottaro wrote:
>> After we were done, we talked about the pros and cons of the languages.
>> Funny, the con of Python (documentation) is PHP's strong point.  The PHP
>> manual is extremely easy to navigate and its search feature works great.
>> Contrast that with Python, where you have to use "the tutorial" as the
>> manual.  Also, the tutorial is just that...a tutorial, its a NOT a
>> manual. Its not organized like a manual and its not comprehensive like a
>> manual, hell, raw_input() isn't even mentioned in Chapter 7. Input and
>> Output.
>> 
> [snip]
>> 
>> What do yall think?
> 
> I have to say, I don't really have your troubles with the documentation,
> and I hardly ever use dir() in the interactive shell.  You mention only
> referring to the tutorial.  Why don't you check the Language
> Reference[1] or Library Reference[2]?

Cuz I think the Language Reference is really more of a grammer reference and
far too technical to look up simple things like "how to declare a
function".

I guess what I'm trying to say is that there is no manual (for the language
itself, not the modules).  There is just the tutorial that serves as the
manual.  I think it should evolve into a manual that is more comprehensive
and organized more like other programming manuals (chapter on control
structures, functions, classes, inheritance, etc).

Kinda funny...I was going to use the email module as an example of a module
that lacks examples...but apparently that has been updated since when I
last used it...=)

> That said, if you see spots where the documentation needs help, the
> right answer is to file a feature request[3] to add documentation.  If
> you're feeling especially helpful, providing the documentation you'd
> like to be added would be greatly appreciated.  Python's a community
> effort -- if you see weak points, you can help the community build a
> better Python by taking the time to address them yourself.

That true, but to be perfectly honest...I don't feel qualified.  I'm still a
young'un in this programming game.  I'm sure a lot of seasoned devs would
scoff at the documentation I write.

> STeVe

-- C

> [1]http://docs.python.org/ref/ref.html
> [2]http://docs.python.org/lib/lib.html
> [3]http://sourceforge.net/tracker/?group_id=5470&atid=355470




From jello at comics.com  Fri May 20 11:59:35 2005
From: jello at comics.com (rzed)
Date: Fri, 20 May 2005 11:59:35 -0400
Subject: PIL and line drawing
References: <zleje.794472$w62.202433@bgtnsc05-news.ops.worldnet.att.net>
	<mailman.244.1116593366.8733.python-list@python.org>
Message-ID: <Xns965C7A2E1E0A4jreeder@63.223.7.253>

"Fredrik Lundh" <fredrik at pythonware.com> wrote in
news:mailman.244.1116593366.8733.python-list at python.org: 

> Leonard J. Reder wrote:
> 
>> I am using PIL to annotate some images with lines.  I could not
>> find anyway to make the line that is drawn from the ImageDraw
>> object thicker.  Does anyone have a suggestion or solution for
>> solving this without to much hacking?
> 
> if you have 1.1.5, you can use the width option to control
> the line width. see:
> 

I'm glad to see that addition. I was surprised to see that 'width' 
is actually doubled in the resulting line, though. I suppose the 
code adds and subtracts the specified width from the specified 
coordinate point(?). I'd love to see width added to arc, circles, 
etc., though if it is, I'd much prefer that it not be centered on 
the coordinate point, but added only to the outer edge (or 
subtracted from the inner edge); it would make placement much 
easier, I'd think. 

At the moment, whenever I need to generate thick-lined circles and 
rectangles, I have to create a second image of the desired color, 
then another mask image to contain a black rectangle (say) of the 
required outer size, then within that a white rectangle of the 
inner size, then use that mask to paste the color onto the original 
image. The results are satisfactory, but the method seems clunky at 
best. Maybe there's a better way. Even if this were the exact 
method used, I'd rather see it automated in C than manually done in 
Python.

>     http://effbot.org/imagingbook/imagedraw.htm
> 
>> Thanks for any replies,
> 
> tip: you may get quicker/better responses if you use the
> image-sig mailing list (if you're using a newsreader, point
> it to gmane.comp.python.image)
> 


-- 
rzed


From Robert at AbilitySys.com  Mon May  2 15:09:55 2005
From: Robert at AbilitySys.com (Robert D. Young)
Date: Mon, 2 May 2005 12:09:55 -0700
Subject: How to tell if invoked through IDLE or command line?
References: <117cshk6l796o75@corp.supernews.com>
	<d55tbe$r9o$1@gemini.csx.cam.ac.uk>
Message-ID: <117cuo499l5vm1a@corp.supernews.com>

Poi-fect - thanks!

import sys
if sys.modules.has_key("idlelib"):
 print "Running under idle"
else:
 print "Not running under idle"


- Robert

"Michael Hoffman" <cam.ac.uk at mh391.invalid> wrote in message
news:d55tbe$r9o$1 at gemini.csx.cam.ac.uk...
> Robert D. Young wrote:
> > I've probably asked this before, but how can I tell within the program
I'm
> > running if the .py files was involved by "run module" in IDLE or by
using
> > the .py assoication with the python.exe program? I'd like to prevent
running
> > under certain circumstances, or pop-up warnings, or change character
> > displays (some look different when run under IDLE).
>
> sys.modules.keys() contains "idlelib" is a simple way of doing it,
> assuming you never import idlelib otherwise (and why would you?)
> -- 
> Michael Hoffman




From rtomek at ceti.pl  Wed May 18 07:54:24 2005
From: rtomek at ceti.pl (Tomasz Rola)
Date: Wed, 18 May 2005 13:54:24 +0200 (CEST)
Subject: speeding up Python script
In-Reply-To: <3evgolF56gtkU3@individual.net>
Message-ID: <Pine.LNX.3.96.1050518135059.7291B-100000@pioneer.space.nemesis.pl>

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On Wed, 18 May 2005, Luis P. Mendes wrote:

> Hi,
> 
> I have a 1000 line python script that takes many hours to finish.  It is
> running with six inside 'for' loops.
> 
> I've searched the net for ways to speed up the proccess.
> 
> Psyco improves performance around 3% in this case which is not good enough.
> 
> How can I dramatically improve speed?
> 
> I tried to find some tool that converts Python to C automatically but
> couldn't.  As I don't know C, I think that weave and PyInline for
> example are out of the solution.
> 
> I'm using Linux.

Maybe this will help you, since you didn't tell what is your python
version, I've seen 2-2.5x speed increase by just replacing 2.1 with psyco
by 2.3 with psyco.

=>  (1003 3): cat bzz2_* | /usr/bin/time python2.3 somescript.py '2.ada miala mak.ba' | wc -c
psyco.full start
psyco.full end
7.48user 0.03system 0:07.58elapsed 99%CPU (0avgtext+0avgdata
0maxresident)k
0inputs+0outputs (436major+358minor)pagefaults 0swaps
1064960

=>  (1003 4): cat bzz2_* | /usr/bin/time somescript.py '2.ada miala mak.ba' | wc -c
psyco.full start
psyco.full end
18.27user 0.03system 0:19.00elapsed 96%CPU (0avgtext+0avgdata
0maxresident)k
0inputs+0outputs (357major+183minor)pagefaults 0swaps
1064960

Regards,
Tomasz Rola

- --
** A C programmer asked whether computer had Buddha's nature.      **
** As the answer, master did "rm -rif" on the programmer's home    **
** directory. And then the C programmer became enlightened...      **
**                                                                 **
** Tomasz Rola          mailto:tomasz_rola at bigfoot.com             **


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From rockon02 at senet.com.au  Sun May 15 08:36:35 2005
From: rockon02 at senet.com.au (Mike brown)
Date: Sun, 15 May 2005 22:36:35 +1000
Subject: Jesus said, "I am the way,
	the truth and the life: no one can come to the Father(God)(in Heaven),
	but by me." (John 14:6) This means that if you die without trusting in
	Jesus Christ as your Lord and Saviour you will die in your sins
	and be forever sepa
References: <1116096706.696830.275140@g44g2000cwa.googlegroups.com>
	<Etvhe.1353573$8l.349001@pd7tw1no>
	<wemdnVcXpcOIIxvfRVn-tQ@comcast.com>
Message-ID: <rockon02-1505052236350001@1cust127.tnt6.adl1.da.uu.net>

In article <wemdnVcXpcOIIxvfRVn-tQ at comcast.com>, "Bubba" <im at home.com> wrote:

> I'm so glad you've decided what everyone believes....
> 



Some of us don't.





Believe that is.





In anything in particular.




MJRB


From sjmachin at lexicon.net  Thu May 19 22:07:57 2005
From: sjmachin at lexicon.net (John Machin)
Date: Fri, 20 May 2005 12:07:57 +1000
Subject: problem uploading ZIP file tp PyPI
References: <ECBA357DDED63B4995F5C1F5CBE5B1E802E59CB2@its-xchg4.massey.ac.nz>
	<mailman.236.1116551089.8733.python-list@python.org>
Message-ID: <r0hq81hq8j4tc1ndk88lr8plu5hnpp0tc1@4ax.com>

On Fri, 20 May 2005 13:04:21 +1200, "Tony Meyer" <t-meyer at ihug.co.nz>
wrote:

>>> So (if the former is what you meant) would a workaround for 
>>> now be to do something like:
>>>
>>>  setup.py sdist --format=gztar upload
>> 
>> (1) error: command 'tar' failed: No such file or directory
>
>I was assuming that tar and gzip were available.  There are various tar/gzip
>applications available for Windows, e.g. Cygwin, gnuwin32.
>
><http://cygwin.com>

ugh ...

><http://gnuwin32.sourceforge.net>

now yer talkin'

Yes, a workaround in extremis for someone who's been there and done
that ... like being able to detect that the tar pkg is unlikely to
hack it, better get bsdtar, better put a copy renamed tar.exe PLUS the
3 DLLs in the path somewhere.

Anyway, to cut a long story short, setup.py sdist --format=gztar did
what it ought to, PyPI doesn't regard *.tar.gz as implying "pr0n", and
I was able to download it again and open it in WinZip (the normal
Windows archive program).

Thanks for the help.





From ivanlan at pauahtun.org  Thu May 19 09:51:16 2005
From: ivanlan at pauahtun.org (Ivan Van Laningham)
Date: Thu, 19 May 2005 07:51:16 -0600
Subject: Python forum
References: <mailman.84.1116320178.8733.python-list@python.org>	<pan.2005.05.17.10.38.09.537008@gmx.at>	<428B1803.80509@softhome.net>	<17035.17855.129397.462296@montanaro.dyndns.org>	<d6fh1f$cqo$1@sea.gmane.org>
	<mailman.149.1116427615.8733.python-list@python.org>
	<d5udneWdj5rADhHfRVn-iQ@powergate.ca>
Message-ID: <428C99D4.1DD68D67@pauahtun.org>

Hi All--

Peter Hansen wrote:
> 
> Ivan Van Laningham wrote:
> > Robert Kern wrote:
> >>dict.org says _forums_. I used _fora_, but I'm silly.
> >>
> > It also says "appendixes" and "indexes" are OK.  Yahoos.
> 
> Should that be "Yaha"?
> 

<g>  Nope.  I appreciate the sentiment, but "Yahoo" is neither Latin nor
Greek.  Instead, it was invented by Jonathan Swift for _Gulliver's
Travels_, published in 1726; since it is a made-up English word, it
follows the rules of English.

Metta,
Ivan 
----------------------------------------------
Ivan Van Laningham
God N Locomotive Works
http://www.andi-holmes.com/
http://www.foretec.com/python/workshops/1998-11/proceedings.html
Army Signal Corps:  Cu Chi, Class of '70
Author:  Teach Yourself Python in 24 Hours


From danb_83 at yahoo.com  Thu May  5 23:10:09 2005
From: danb_83 at yahoo.com (Dan Bishop)
Date: 5 May 2005 20:10:09 -0700
Subject: How to detect a double's significant digits
References: <1115314620.902071.323410@f14g2000cwb.googlegroups.com>
	<1115317222.685180.62020@z14g2000cwz.googlegroups.com>
	<mailman.63.1115321780.29826.python-list@python.org>
Message-ID: <1115349009.823270.106550@g14g2000cwa.googlegroups.com>

Fredrik Lundh wrote:
> "mrstephengross" wrote:
>
> > >But, assuming you have your numbers as strings, I would suggest
> > looking
> > at str.split() and len().
> >
> > Well, the numbers are in fact stored as numbers, so string
processing
> > won't work.
>
> if they're not strings, your question is meaningless.  as others have
> pointed out, the exact internal representation for 0.103 is more like
> 0.10299999999999999433786257441170164383947849273681640625
> which has a lot more than 3 digits...

Actually, it's more like

0 01111111011 1010010111100011010100111111011111001110110110010001



From robin at SPAMREMOVEjessikat.fsnet.co.uk  Mon May 23 18:58:22 2005
From: robin at SPAMREMOVEjessikat.fsnet.co.uk (Robin Becker)
Date: Mon, 23 May 2005 22:58:22 +0000
Subject: python24.zip
In-Reply-To: <mailman.39.1116881236.18027.python-list@python.org>
References: <mailman.249.1116595092.8733.python-list@python.org>	<428e0cc3$0$29954$9b622d9e@news.freenet.de>	<x7hdgw2zqi.fsf@handshake.de>	<428faddd$0$26322$9b622d9e@news.freenet.de>	<x7vf5bku5d.fsf@handshake.de>	<4290dc79$0$9989$9b622d9e@news.freenet.de>	<4291ea5b$1@nntp0.pdx.net>	<42921399.2050302@v.loewis.de>	<mailman.36.1116872480.18027.python-list@python.org>
	<mailman.39.1116881236.18027.python-list@python.org>
Message-ID: <4292600E.2040801@jessikat.fsnet.co.uk>

Martin v. L?wis wrote:
> Robin Becker wrote:
> 
>>ie if we have N importers and F leading failure syspath entries before
>>the correct one is found do we get order N*F failed stats/opens etc etc?
> 
> 
> No. Each path hook is supposed to provide a decision as to whether this
> is a useful item on sys.path only once; the importer objects themselves
> are then cached (with some operation to clear the cache). Each path hook
> may apply its own algorithm, e.g. looking at the syntactical structure
> or the type of the sys.path item, so not all of them need stat/open
> to determine whether they support the item.
> 
> The multiplicative behaviour rather results from the different type of
> modules: each path item may carry .py, .pyc, .so, module.so, etc.
> 
> Regards,
> Martin
> 
if the importers are tested statically how does a filesystem path ever manage
to get back into the loop if it was ever found missing? In other words if
things (eg python24.zip) are found not importable/usable in one pass how do
they get reinstated?
-- 
Robin Becker


From removethis.kartic.krishnamurthy at gmail.com  Wed May 11 11:55:55 2005
From: removethis.kartic.krishnamurthy at gmail.com (Kartic)
Date: Wed, 11 May 2005 15:55:55 GMT
Subject: reg mail sending without smtp module
In-Reply-To: <mailman.360.1115821428.29826.python-list@python.org>
References: <mailman.360.1115821428.29826.python-list@python.org>
Message-ID: <eWpge.466$PM4.370@newssvr31.news.prodigy.com>

The Great 'praba kar' uttered these words on 5/11/2005 10:06 AM:
> Dear All,
> 
>          Is it possible to send a message as a mail
> with out smtplib module?  If you find out any module
> for mail sending(without smtplib) kindly mail me.
> 
> regards
> Prabahar


twistedmatrix.com, Twisted Mail project.

smtplib module is really good; I have no idea why you want an 
alternative. If it is regarding that Received from "nobody", that is 
really not an issue. The mail get delivered and not marked as spam 
because of the nobody. Moreover, the receiving server resolves it correctly.

Thanks,
-Kartic


From ville at spammers.com  Sat May 21 03:30:22 2005
From: ville at spammers.com (Ville Vainio)
Date: 21 May 2005 10:30:22 +0300
Subject: first release of PyPy
References: <mailman.264.1116625088.8733.python-list@python.org>
	<1116629407.638782.145950@g47g2000cwa.googlegroups.com>
	<1116644536.741250.249860@g44g2000cwa.googlegroups.com>
	<mailman.279.1116649250.8733.python-list@python.org>
	<1116653460.808204.74460@g43g2000cwa.googlegroups.com>
	<87mzqpytep.fsf@wilson.rwth-aachen.de>
	<7xfywhxerd.fsf@ruckus.brouhaha.com>
	<87is1dyru8.fsf@wilson.rwth-aachen.de>
	<du7hdgxt4th.fsf@amadeus.cc.tut.fi>
Message-ID: <du7d5rlt4s1.fsf@amadeus.cc.tut.fi>

>>>>> "Ville" == Ville Vainio <ville at spammers.com> writes:

    Ville> This is not about PyPy but it might help:

    Ville> http://www.python.org/pycon/dc2004/papers/1/paper.pdf

(It's about starkiller, sorry about the opaque url)

-- 
Ville Vainio   http://tinyurl.com/2prnb


From bokr at oz.net  Sat May  7 11:17:16 2005
From: bokr at oz.net (Bengt Richter)
Date: Sat, 07 May 2005 15:17:16 GMT
Subject: hard memory limits
References: <d5f9jl$k6d$1@domitilla.aioe.org>	<mailman.88.1115374567.29826.python-list@python.org>	<d5gphu$hij$1@domitilla.aioe.org>
	<mailman.115.1115419109.29826.python-list@python.org>
	<d5h4eb$g5v$1@domitilla.aioe.org> <427c258b.868346285@news.oz.net>
	<lpco719k5lttbn1m9jj3shi08q5h62oe45@4ax.com>
	<d5hemh$a83$1@domitilla.aioe.org>
Message-ID: <427cdb37.914854991@news.oz.net>

On Sat, 07 May 2005 14:03:34 +1000, Maurice LING <mauriceling at acm.org> wrote:

>John Machin wrote:
>> On Sat, 07 May 2005 02:29:48 GMT, bokr at oz.net (Bengt Richter) wrote:
>> 
>> 
>>>On Sat, 07 May 2005 11:08:31 +1000, Maurice LING <mauriceling at acm.org> wrote:
>>>
>>>>It doesn't seems to help. I'm thinking that it might be a SOAPpy 
>>>>problem. The allocation fails when I grab a list of more than 150k 
>>>>elements through SOAP but allocating a 1 million element list is fine in 
>>>>python.
>>>>
>>>>Now I have a performance problem...
>>>>
>>>>Say I have 3 lists (20K elements, 1G elements, and 0 elements), call 
>>>>them 'a', 'b', and 'c'. I want to filter all that is in 'b' but not in 
>>>>'a' into 'c'...
>>>>
>>>>
>>>>>>>a = range(1, 100000, 5)
>>>>>>>b = range(0, 1000000)
>>>>>>>c = []
>>>>>>>for i in b:
>>>>
>>>>...     if i not in a: c.append(i)
>>>>...
>>>>
>>>>This takes forever to complete. Is there anyway to optimize this?
>>>>
>>>
>>>Checking whether something is in a list may average checking equality with
>>>each element in half the list. Checking for membership in a set should
>>>be much faster for any significant size set/list. I.e., just changing to
>>>
>>>     a = set(range(1, 100000, 5))
>>>
>>>should help. I assume those aren't examples of your real data ;-)
>>>You must have a lot of memory if you are keeping 1G elements there and
>>>copying a significant portion of them. Do you need to do this file-to-file,
>>>keeping a in memory? Perhaps page-file thrashing is part of the time problem?
>> 
>> 
>> Since when was 1000000 == 1G??
>> 
>> Maurice, is this mucking about with 1M or 1G lists in the same
>> exercise as the "vm_malloc fails when allocating a 20K-element list"
>> problem? Again, it might be a good idea if you gave us a little bit
>> more detail. You haven't even posted the actual *PYTHON* error message
>> and stack trace that you got from the original problem. In fact,
>> there's a possible interpretation that the (system?) malloc merely
>> prints the vm_malloc message and staggers on somehow ...
>> 
>> Regards,
>> John
>
>This is the exact error message:
>
>*** malloc: vm_allocate(size=9203712) failed (error code=3)
>*** malloc[489]: error: Can't allocate region
>
>Nothing else. No stack trace, NOTHING.
>
1. Can you post minimal exact code that produces the above exact error message?
2. Will you? ;-)

Regards,
Bengt Richter


From dbickett at gmail.com  Fri May 20 20:14:04 2005
From: dbickett at gmail.com (Daniel Bickett)
Date: Fri, 20 May 2005 20:14:04 -0400
Subject: passing arguments
In-Reply-To: <200505201920.50962.jeffelkins@earthlink.net>
References: <200505201826.09939.jeffelkins@earthlink.net>
	<200505201546.53578.jstroud@mbi.ucla.edu>
	<200505201920.50962.jeffelkins@earthlink.net>
Message-ID: <1d6cdae305052017147c5b37c8@mail.gmail.com>

An even better way would be to use the optparse module.
-- 
Daniel Bickett
dbickett at gmail.com <http://gmail.com>
http://heureusement.org/
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From ognjen at mailshack.com  Mon May 30 21:01:32 2005
From: ognjen at mailshack.com (Ognjen Bezanov)
Date: Tue, 31 May 2005 02:01:32 +0100
Subject: How to run functions in the background?
In-Reply-To: <d7fnj2$sh3$1@sea.gmane.org>
References: <429B3A9E.9060201@mailshack.com> <d7fnj2$sh3$1@sea.gmane.org>
Message-ID: <429BB76C.6010801@mailshack.com>

Terry Reedy wrote:

>"Ognjen Bezanov" <ognjen at mailshack.com> wrote in message 
>news:429B3A9E.9060201 at mailshack.com...
>  
>
>>I need to find a way to 'fork' a function into the background yet still
>>be able to send commands to it.
>>    
>>
>
>Others gave you the answer to this..
>
>  
>
>>I am writing a media player, and I have a function which plays the
>>media. I want to be able to run this function but to (at the same time)
>>be able to send commands from it (e.g. pause, play etc...)
>>    
>>
>
>But for this, you might look into PyGame, which, I believe, has functions 
>like this.
>
>Terry J. Reedy
>
>
>
>  
>
I had a look into this, but have decided on pymedia, which was more
focused on well... media.

Either way thanks all of you, I have written my first threaded program,
and it does what I need it to perfectly.

The only thing i have a problem with now is how to communicate with the
thread, I need to send commands such as "play","pause" and the like to
it. someone here mentioned queues, but searching the python
documentation only have me a description of the queue object.

Is there anywhere where I can find out about queues, for people who know
python but have not had a lot of experience with threaded programs? Cheers



From ezjab at ieee.org  Tue May 31 16:44:54 2005
From: ezjab at ieee.org (Jim Anderson)
Date: Tue, 31 May 2005 20:44:54 GMT
Subject: running tkinter
Message-ID: <a14ne.9382$zb.8542@trndny04>


I have just installed Fedora Core 3 on my pc. Python runs
fine, but when I try to run tkinter the tkinter library is
not found. I tried installing python 2.4.1 and could not get
tkinter to run there either.

When I look through the build directories for 2.4.1, I find
a lib-tk, but I do not find anything for tcl. In past releases,
my recollection is that tcl/tk were part of the release and
that if TCL_LIBRARY and TK_LIBRARY environment variables were
set right, then tkinter would work.

Are tcl/tk still supposed to be an intergrated part of the
python release?

Do I have to download, configure, make, install tcl and tk
packages to get tkinter running?

Thanks for any suggestions in advance.

Jim Anderson


From ssmith579 at aol.com  Fri May 27 16:47:25 2005
From: ssmith579 at aol.com (ssmith579 at aol.com)
Date: 27 May 2005 13:47:25 -0700
Subject: Get number of lines in file
In-Reply-To: <mailman.197.1117222219.18027.python-list@python.org>
References: <1117221428.788567.10060@f14g2000cwb.googlegroups.com>
	<mailman.197.1117222219.18027.python-list@python.org>
Message-ID: <1117226845.178779.308410@g44g2000cwa.googlegroups.com>

Thanks!  I was trying len(cpn_version) and that didn't work.



From fredrik at pythonware.com  Fri May  6 06:04:23 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Fri, 6 May 2005 12:04:23 +0200
Subject: hard memory limits
References: <d5f9jl$k6d$1@domitilla.aioe.org>
Message-ID: <d5ffmp$96i$1@sea.gmane.org>

Maurice LING wrote:

> I think I've hit a system limit in python when I try to construct a list
> of 200,000 elements.

there's no such limit in Python.

> My error is
>
> malloc: vm_allocate (size = 2400256) failed......
>
> Just wondering is this specific to my system or what?

that doesn't look like a Python error (Python usually raises
MemoryError exceptions when it runs out of memory), and
there's no sign of any vm_allocate function in the Python
sources, so yes, it's a system-specific problem.

> Will adding more RAM helps in this case?

probably.  more swap space might also help.  or you could use a
smarter malloc package.  posting more details on your platform,
toolchain, python version, and list building approach might also
help.

(are you perhaps building multiple lists piece by piece, interleaved
with other object allocations?  if so, it's probably a fragmentation
problem.  to check this, watch the process size.  if if grows at a
regular rate, and then explodes just before you get the above error,
you may need to reconsider the design a bit).

</F>





From mwm at idiom.com  Mon May 23 21:38:11 2005
From: mwm at idiom.com (Mike Meyer)
Date: 23 May 2005 18:38:11 -0700
Subject: What are OOP's Jargons and Complexities?
References: <1116843784.627059.146910@g47g2000cwa.googlegroups.com>
	<5jacmmj9aw.fsf@idiom.com> <4291f80a@news.tulsaconnect.com>
Message-ID: <5jekbxh08s.fsf@idiom.com>

Jonathan Bartlett <johnnyb at eskimo.com> writes:

> Mike Meyer wrote:
> > "Xah Lee" <xah at xahlee.org> writes:
> > So now we find out that Xah Lee is as ignorant of other programming
> > languages as he is of Python and Perl.
> 
> I think you're misreading some of what is being said.

Given how clear Lee's writing is, that's certainly possible.

I note that, while you disagree with my interpretation of what Lee said,
you trimmed the text under discussion in *every* case. That sort of makes
the discussion moot. I don't care enough about the subject to dig out his
original quotes. I do stand by my interpretation of them as radically wrong,
which is par for the course for Lee. If you really want to discuss these,
please repost your comments, leaving Lee's text in place.

> > Function nesting and classes were viewed as independent
> > features. Some OO languages support nesting, others don't. I think
> > it was Grace Murray
> > Hopper commenting on Ada who said that "With classes, nesting is for the
> > birds."
> Doesn't this quote show the opposite?

I don't think so. I had originally written a comment to the effect that
early OO languages seemed to include it or not, with no apparent rhyme
or reason. The GMH quote was meant to show that nesting - or lack of it -
was pretty much irrelevant. I left out the intervening text.

My bad.

        <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From rschroev_nospam_ml at fastmail.fm  Tue May  3 14:49:14 2005
From: rschroev_nospam_ml at fastmail.fm (Roel Schroeven)
Date: Tue, 03 May 2005 18:49:14 GMT
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <Pine.SOL.4.33.0505031353330.17143-100000@innovate>
References: <d4u60o$akh$1@news2.netvision.net.il>
	<mailman.47.1114818531.14961.python-list@python.org>
	<3dg5isF6qe1nhU1@news.dfncis.de> <d4v1an$j7q$1@sea.gmane.org>
	<1f7befae05043000165448b8d@mail.gmail.com>
	<mailman.55.1114846630.14961.python-list@python.org>
	<Pine.SOL.4.33.0505031353330.17143-100000@innovate>
Message-ID: <KIPde.80381$uy4.5183583@phobos.telenet-ops.be>

Chris McAloney wrote:

> Hi all,
> 
> Okay, so I've been working on level seven for a LONG time now.  I've
> decoded the first message to get the hint for the next level.  Using the
> same tactics, then I decode the hint as well, but there are non-printable
> characters.  I've tried stripping out those characters, quoting them to
> include in the URL and various anagrams of the printable characters, but
> nothing works.  Does anybody have any suggestions?

I just took a guess for the first of those non-printable characters, and 
proceeded from there. I thought it was going to be too simplistic, but 
it worked. And fortunately my first guess was the right one.

-- 
If I have been able to see further, it was only because I stood
on the shoulders of giants.  -- Isaac Newton

Roel Schroeven


From chris.cahoon at gmail.com  Mon May 23 16:17:24 2005
From: chris.cahoon at gmail.com (ccahoon)
Date: 23 May 2005 13:17:24 -0700
Subject: Problem with DispatchWithEvents
Message-ID: <1116879444.746650.297230@g14g2000cwa.googlegroups.com>

Traceback (most recent call last):
  File "windowedfax.py", line 223, in OnClick
    self.iexplore = DispatchWithEvents("InternetExplorer.Application",
eventHandling)
  File "C:\Python24\Lib\site-packages\win32com\client\__init__.py",
line 268, in DispatchWithEvents
    user_event_class.__init__(instance)
  File "windowedfax.py", line 178, in __init__
    this.iexploreInstance = self
NameError: global name 'this' is not defined

Output completed (18 sec consumed) - Normal Termination

I am running Python 2.4 with the most recent 2.4 win32all package
installed.  This is straight from the installer.  I did a clean
installation of everything.

This was working before I tried an ActivePython distribution.  It
stopped working because ActivePython did not seem to support my SSL
usage in urllib, so I returned to a stock python distribution.

The line where I call DispatchWithEvents is like this:
iexplore = DispatchWithEvents("InternetExplorer.Application",
eventHandling)

where eventHandling is a functioning class to that purpose.

Thanks for any help, in advance.



From mullins.j at gmail.com  Mon May  2 10:55:34 2005
From: mullins.j at gmail.com (Jeff)
Date: 2 May 2005 07:55:34 -0700
Subject: SWIG -- Passing python proxy class instance to python callback
Message-ID: <1115045734.118344.80850@z14g2000cwz.googlegroups.com>

I'm trying to pass a proxy class instance (SWIG generated) of CClass,
to a python callback function from C++.  The proxy class instance of
CClass is created from a pointer to the C++ class CClass.

Using the code below, I receive the error message:

"AttributeError: 'PySwigObject' object has no attribute 'GetName'"


The python callback function is being passed in through the clientdata
pointer, and the CClass *class pointer is what's being converted to an
instance of the SWIG proxy class and passed to the python callback
function as an argument.

static void PythonCallBack(CClass *class,void *clientdata)
{
   PyObject *func, *arglist,*obj;
   PyObject *result;

   func = (PyObject *) clientdata;   // Get Python function
   obj = SWIG_NewPointerObj((void*) cmd, SWIGTYPE_p_CSCSICommand,  1);
//create instance of python proxy class from c++ pointer

   arglist=Py_BuildValue("(O)",*obj); //convert to tuple
   result = PyEval_CallObject(func,arglist);     // Call Python

   Py_XDECREF(result);
   return;
}

Any input would greatly appreciated.  Thanks,
Jeff



From enleverlesO.OmcO at OmclaveauO.com  Tue May 24 01:48:13 2005
From: enleverlesO.OmcO at OmclaveauO.com (Do Re Mi chel La Si Do)
Date: Tue, 24 May 2005 07:48:13 +0200
Subject: Just remember that Python is sexy
References: <1116899839.323185.58350@g49g2000cwa.googlegroups.com>
Message-ID: <4293744d$0$1213$8fcfb975@news.wanadoo.fr>

:-)





From fiedzia at fiedzia.prv.pl  Tue May  3 14:44:26 2005
From: fiedzia at fiedzia.prv.pl (Maciej Dziardziel)
Date: Tue, 03 May 2005 20:44:26 +0200
Subject: Read / Write image file
References: <1115143942.944188.158270@g14g2000cwa.googlegroups.com>
Message-ID: <20050503184427.1D99.0.NOFFLE@fiedzia.homeip.net>

codecraig wrote:

> I have a image file on my pc, say a .jpg.  Basically I want to setup a
> client/server socket, and I want the client to read in the jpg and send
> it to the server, where the server can write that data into a new file
> on the server.
> 
> I tried just doing something like..
> 
> x = open("abc.jpg")
> y = x.read()
> tmp = open("newFile.jpg", "w")
> tmp.write(y)
> tmp.close()
> x.close()
> 
> ...but that doesn't give me a copy of abc.jpg
> 
> any ideas?  Thanks

Give us more details. The code above works well for me. (python2.3).

-- 
Maciej "Fiedzia" Dziardziel (fiedzia (at) fiedzia (dot) prv (dot) pl)
www.fiedzia.prv.pl


From philippe at philippecmartin.com  Sat May 28 18:19:45 2005
From: philippe at philippecmartin.com (Philippe C. Martin)
Date: Sat, 28 May 2005 22:19:45 GMT
Subject: Getting value of radiobutton trouble
References: <3fs17rF9b8edU1@news.dfncis.de>
	<%35me.194$Dq7.159@newssvr11.news.prodigy.com>
	<K65me.195$Dq7.187@newssvr11.news.prodigy.com>
	<3fs6vqF9e961U1@news.dfncis.de>
Message-ID: <586me.3510$4N2.2763@newssvr30.news.prodigy.com>

Then I guess you need a TopLevel widget instead:


(I still suggest you look at wxPython)


from Tkinter import *
class GetVariant:
     def __init__(self,p):
         self.root = p

         self.firstframe = Frame(self.root,bg="red")
         self.firstframe.pack(side=BOTTOM,expand=1)


         self.v = StringVar()
         self.radiobutton = Radiobutton(self.firstframe,text="Variant 1",
variable=self.v, value="Variant 1")
         self.radiobutton.pack(side=TOP,anchor=W)
         self.radiobutton.select()
         self.radiobutton = Radiobutton(self.firstframe,text="Variant 2",
variable=self.v, value="Variant 2")
         self.radiobutton.pack(side=TOP,anchor=W)
         self.radiobutton = Radiobutton(self.firstframe,text="Variant 3",
variable=self.v, value="Variant 3")
         self.radiobutton.pack(side=TOP,anchor=W)



         self.secondframe = Frame(self.root,bg="blue")
         self.secondframe.pack()
         self.var = Button(self.secondframe,text="What
Variant",command=self.call)
         self.var.pack(expand=1,side=BOTTOM)



     def call(self):
         self.variant = self.v.get()
         print 'Input => "%s"' % self.variant

class OneButton:
         def __init__(self):
             self.root = Tk()
             Button(self.root,text="click me",command=self.getvar).pack()
         def getvar(self):
             self.mainframe = Toplevel(bg="yellow")
             a=GetVariant(self.mainframe)

d = OneButton()
d.root.mainloop()

VK wrote:

> Philippe C. Martin wrote:
>> Sorry,
>> 
>> I still had your code in my clipboard :-) here goes:
> 
> So, your code works, but I need, that first window calls another
> separate window. In your programm they stick together.
> Reg, VK
> 
>> 
>> 
>> 
>> from Tkinter import *
>> class GetVariant(Frame):
>>      def __init__(self,p):
>>          self.root = p
>>          self.mainframe = Frame(self.root,bg="yellow")
>>          self.mainframe.pack(fill=BOTH,expand=1)
>> 
>>          self.firstframe = Frame(self.mainframe,bg="red")
>>          self.firstframe.pack(side=BOTTOM,expand=1)
>> 
>> 
>>          self.v = StringVar()
>>          self.radiobutton = Radiobutton(self.firstframe,text="Variant 1",
>> variable=self.v, value="Variant 1")
>>          self.radiobutton.pack(side=TOP,anchor=W)
>>          self.radiobutton.select()
>>          self.radiobutton = Radiobutton(self.firstframe,text="Variant 2",
>> variable=self.v, value="Variant 2")
>>          self.radiobutton.pack(side=TOP,anchor=W)
>>          self.radiobutton = Radiobutton(self.firstframe,text="Variant 3",
>> variable=self.v, value="Variant 3")
>>          self.radiobutton.pack(side=TOP,anchor=W)
>> 
>> 
>> 
>>          self.secondframe = Frame(self.mainframe,bg="blue")
>>          self.secondframe.pack()
>>          self.var = Button(self.secondframe,text="What
>> Variant",command=self.call)
>>          self.var.pack(expand=1,side=BOTTOM)
>> 
>> 
>> 
>>      def call(self):
>>          print dir(self.v)
>>          self.variant = self.v.get()
>>          print 'Input => "%s"' % self.variant
>> 
>> class OneButton(Frame):
>>          def __init__(self):
>>              self.root = Tk()
>>              Button(self.root,text="click me",command=self.getvar).pack()
>>          def getvar(self):
>>              print 'HRE'
>>              a=GetVariant(self.root)
>> 
>> d = OneButton()
>> d.root.mainloop()
>> 
>> 
>> 
>> 
>> 
>> 
>> Philippe C. Martin wrote:
>> 
>> 
>>>Hi,
>>>
>>>I think your second call to Tk() does it: this works although the look is
>>>different:
>>>
>>>
>>>from Tkinter import *
>>>class GetVariant:
>>>     def __init__(self):
>>>         self.root = Tk()
>>>         self.mainframe = Frame(self.root,bg="yellow")
>>>         self.mainframe.pack(fill=BOTH,expand=1)
>>>
>>>         self.firstframe = Frame(self.mainframe,bg="red")
>>>         self.firstframe.pack(side=BOTTOM,expand=1)
>>>
>>>         global v
>>>         v = StringVar()
>>>         self.radiobutton = Radiobutton(self.firstframe,text= "Variant
>>>1", variable=v, value="Variant 1")
>>>         self.radiobutton.pack(side=TOP,anchor=W)
>>>         self.radiobutton.select()
>>>         self.radiobutton = Radiobutton(self.firstframe,text= "Variant
>>>2", variable=v, value="Variant 2")
>>>         self.radiobutton.pack(side=TOP,anchor=W)
>>>         self.radiobutton = Radiobutton(self.firstframe,text= "Variant
>>>3", variable=v, value="Variant 3")
>>>         self.radiobutton.pack(side=TOP,anchor=W)
>>>
>>>
>>>
>>>         self.secondframe = Frame(self.mainframe,bg="blue")
>>>         self.secondframe.pack()
>>>         self.var = Button(self.secondframe,text="What
>>>Variant",command=self.call)
>>>         self.var.pack(expand=1,side=BOTTOM)
>>>
>>>
>>>
>>>     def call(self):
>>>         self.variant = v.get()
>>>         print 'Input => "%s"' % self.variant
>>>
>>>class OneButton:
>>>         def __init__(self):
>>>             self.root = Tk()
>>>             Button(self.root,text="click me",command=self.getvar).pack()
>>>         def getvar(self):
>>>             a=GetVariant()
>>>
>>>d = OneButton()
>>>d.root.mainloop()
>>>
>>>
>>>
>>>
>>>VK wrote:
>>>
>>>
>>>>Hi!
>>>>What I'm missing in following code? Cannot get the values of
>>>>radiobuttons. Starting only one class (GetVariant), it works. When I put
>>>>two classes together, it doesn't.
>>>>Regards, VK
>>>>
>>>>from Tkinter import *
>>>>class GetVariant:
>>>>     def __init__(self):
>>>>         self.root = Tk()
>>>>         self.mainframe = Frame(self.root,bg="yellow")
>>>>         self.mainframe.pack(fill=BOTH,expand=1)
>>>>
>>>>         self.firstframe = Frame(self.mainframe,bg="red")
>>>>         self.firstframe.pack(side=BOTTOM,expand=1)
>>>>
>>>>         global v
>>>>         v = StringVar()
>>>>         self.radiobutton = Radiobutton(self.firstframe,text= "Variant
>>>>1", variable=v, value="Variant 1")
>>>>         self.radiobutton.pack(side=TOP,anchor=W)
>>>>         self.radiobutton.select()
>>>>         self.radiobutton = Radiobutton(self.firstframe,text= "Variant
>>>>2", variable=v, value="Variant 2")
>>>>         self.radiobutton.pack(side=TOP,anchor=W)
>>>>         self.radiobutton = Radiobutton(self.firstframe,text= "Variant
>>>>3", variable=v, value="Variant 3")
>>>>         self.radiobutton.pack(side=TOP,anchor=W)
>>>>
>>>>
>>>>
>>>>         self.secondframe = Frame(self.mainframe,bg="blue")
>>>>         self.secondframe.pack()
>>>>         self.var = Button(self.secondframe,text="What
>>>>Variant",command=self.call)
>>>>         self.var.pack(expand=1,side=BOTTOM)
>>>>
>>>>
>>>>
>>>>     def call(self):
>>>>         self.variant = v.get()
>>>>         print 'Input => "%s"' % self.variant
>>>>
>>>>class OneButton:
>>>>         def __init__(self):
>>>>             self.root = Tk()
>>>>             Button(self.root,text="click
>>>>             me",command=self.getvar).pack()
>>>>         def getvar(self):
>>>>             a=GetVariant()
>>>>
>>>>d = OneButton()
>>>>d.root.mainloop()
>> 
>>



From lknews at netactive.co.uk  Tue May 10 13:46:33 2005
From: lknews at netactive.co.uk (Lawrence Kirby)
Date: Tue, 10 May 2005 18:46:33 +0100
Subject: Language documentation ( was Re: Computing Industry shams)
References: <1115509201.680334.140840@f14g2000cwb.googlegroups.com>
	<874qdezh76.fsf@kafka.homenet> <1415322.AzhuxSBQdk@yahoo.com>
	<x78y2ot3zq.fsf@bolo.xenadyne.com> <1955897.My2EmLpO4s@yahoo.com>
	<pan.2005.05.10.14.08.14.485000@netactive.co.uk>
	<1212926.3xzUY5Pt1A@yahoo.com>
Message-ID: <pan.2005.05.10.17.47.38.704000@netactive.co.uk>

On Tue, 10 May 2005 06:52:18 -0700, alex goldman wrote:

> Lawrence Kirby wrote:

...

>> However the original quote was in the context of regular expressions, so
>> discussion of the terminology used in regular expressions is far more
>> relevant than the terminology used in graph search and optimisation
>> algorithms.
> 
> I replied to "And from memory, that is the sort of thing done in Computing
> 101 and in  Data Structures and Algorithms 101", and I fully explained what
> I meant by "greedy" as well. There was no ambiguity.

My response talks about relevance, not ambiguity.

Lawrence



From walter at livinglogic.de  Fri May 13 12:05:14 2005
From: walter at livinglogic.de (=?ISO-8859-1?Q?Walter_D=F6rwald?=)
Date: Fri, 13 May 2005 18:05:14 +0200
Subject: MySQL: 'latin-1' codec can't encode character
In-Reply-To: <d62hko$d0n$1@sea.gmane.org>
References: <1115990748.006171.96240@g49g2000cwa.googlegroups.com><mailman.24.1115991548.29328.python-list@python.org>	<1115992562.777210.49050@o13g2000cwo.googlegroups.com>
	<d62hko$d0n$1@sea.gmane.org>
Message-ID: <4284D03A.30201@livinglogic.de>

Fredrik Lundh wrote:

> [...]
> if you want more control of the replacement, you can skip the translate
> step and use your own error handler, e.g.
> 
>     charmap = ... see above ...
> 
>     def fixunicode(info):
>         s = info.object[info.start:info.end]
>         try:
>             return charmap[ord(s)], info.end

This will fail if there's more than one consecutive unencodable 
character, better use
    return charmap[ord(s[0])], info.start+1
or
    return "".join(charmap.get(ord(c), u"<U+%04x>" % ord(c)) for c in 
s), info.end
(without the try:) instead.

Bye,
    Walter D?rwald


From sxanth at ceid.upatras.gr  Fri May 13 06:07:19 2005
From: sxanth at ceid.upatras.gr (Stelios Xanthakis)
Date: Fri, 13 May 2005 13:07:19 +0300
Subject: pyvm -- faster python
In-Reply-To: <mailman.12.1115976009.29328.python-list@python.org>
References: <mailman.164.1115548611.29826.python-list@python.org>	<1115561483.741761.212140@f14g2000cwb.googlegroups.com>	<m102l2-9qr.ln1@home.rogerbinns.com>	<mailman.264.1115716603.29826.python-list@python.org>	<vu38l2-k5v.ln1@home.rogerbinns.com>	<7xvf5qbir1.fsf@ruckus.brouhaha.com>	<nt98l2-1e.ln1@home.rogerbinns.com>	<7xpsvymlse.fsf@ruckus.brouhaha.com>	<1115791624.856252.247890@z14g2000cwz.googlegroups.com>	<7x1x8el18e.fsf@ruckus.brouhaha.com>	<1115876410.813839.222080@g43g2000cwa.googlegroups.com>	<mailman.441.1115886157.29826.python-list@python.org>	<1115925027.360010.183480@g49g2000cwa.googlegroups.com>
	<mailman.12.1115976009.29328.python-list@python.org>
Message-ID: <42847C57.8070601@ceid.upatras.gr>

Stelios Xanthakis wrote:

> 
> Also, for the other part of the thread, I think that bytecode may
> be in fact faster than machine code JIT. 

Forgot to add: It depends of course on how good is the bytecode.
IMO Python's bytecode is pretty good for its purpose which is
executing a dynamic language with dynamic types and namespaces.

Also, inside pyvm some things are done with internal bytecode
objects.  One such thing is "list(generator)".  It has been
proved that doing this in bytecode is faster than C.

Stelios




From a.schmolck at gmx.net  Wed May 25 16:55:28 2005
From: a.schmolck at gmx.net (Alexander Schmolck)
Date: Wed, 25 May 2005 21:55:28 +0100
Subject: regexp for sequence of quoted strings
References: <1117050058.836444.189460@o13g2000cwo.googlegroups.com>
Message-ID: <yfs64x7xby7.fsf@black4.ex.ac.uk>

gry at ll.mit.edu writes:

> I have a string like:
>  {'the','dog\'s','bite'}
> or maybe:
>  {'the'}
> or sometimes:
>  {}
>
> [FYI: this is postgresql database "array" field output format]
>
> which I'm trying to parse with the re module.
> A single quoted string would, I think, be:
>  r"\{'([^']|\\')*'\}"

what about {'dog \\', ...} ?

If you don't need to validate anything you can just forget about the commas
etc and extract all the 'strings' with findall,

The regexp below is a bit too complicated (adapted from something else) but I
think will work:

In [90]:rex = re.compile(r"'(?:[^\n]|(?<!\\)(?:\\)(?:\\\\)*\n)*?(?<!\\)(?:\\\\)*?'")

In [91]:rex.findall(r"{'the','dog\'s','bite'}")
Out[91]:["'the'", "'dog\\'s'", "'bite'"]

Otherwise just add something like ",|}$" to deal with the final } instead of a
comma.

Alternatively, you could also write a regexp to split on the "','" bit and trim
the first and the last split.

'as






From sjmachin at lexicon.net  Mon May 16 20:33:35 2005
From: sjmachin at lexicon.net (John Machin)
Date: Tue, 17 May 2005 10:33:35 +1000
Subject: Anyway to designating the encoding of the "source" for compile?
References: <1116087091.856022.155340@z14g2000cwz.googlegroups.com>
	<1116263722.499345.73260@g43g2000cwa.googlegroups.com>
	<sg2i8119lqdrlu0sb6atgrj88cgjrda6f0@4ax.com>
	<1116286039.267037.91500@o13g2000cwo.googlegroups.com>
	<1116287070.202497.16340@g44g2000cwa.googlegroups.com>
Message-ID: <dndi81lj2s610u1rm1q8n088iturvee2bt@4ax.com>

On 16 May 2005 16:44:30 -0700, janeaustine50 at hotmail.com wrote:

>
>janeaustin... at hotmail.com wrote:
>> John Machin ??:
>> > On 16 May 2005 10:15:22 -0700, janeaustine50 at hotmail.com wrote:
>> >
>> > >janeaustine50 at hotmail.com wrote:
>> > >> Python's InteractiveInterpreter uses the built-in compile
>> function.
>> > >>
>> > >> According to the ref. manual, it doesn't seem to concern about
>the
>> > >> encoding of the source string.
>> > >>
>> > >> When I hand in an unicode object, it is encoded in utf-8
>> > >automatically.
>> > >> It can be a problem when I'm building an interactive environment
>> > >using
>> > >> "compile", with a different encoding from utf-8.
>> >

==== This is *EXACTLY* what your problem is ====
>> > I don't understand this. Suppose your "different encoding" is
>cp125x
>> > (where x is a digit). Would you not do something like this?
>> >
>> > compile_input = user_input.decode('cp125x')
>> > code_object = compile(compile_input, ......
=================================================




==== It would have helped had you followed this ==========
>> > and when it comes to Unicode
>> > objects (indeed any text), show us repr(text) -- "what you see is
>> > often not what others see and often not what you've actually got".
===========================================================

>> Okay, I'll use one of the CJK codecs as the example. EUC-KR is the
>> default encoding.
>>
>> >>> import sys;sys.getdefaultencoding()
>> 'euc-kr'
>> >>> '??' 
# There's a very strong assumption that the above was originally
encoded in euc-kr but by the time I copied the 2 chars out of my
browser it was definitely Unicode. See what I mean about using repr()?

>> '\xc7\xd1\xb1\xdb'
>> >>> u'??'
>> u'\ud55c\uae00'
>> >>> s=compile("inside=u'??'",'','single')
>> >>> exec s
>> >>> inside #wrong

[big snip]

Like I said, *ALL* you have to do (like in any other Unicode-aware
app) is decode your user input into Unicode (you *don't* need to parse
bits and pieces of it) and feed it in ... like this:

>>> user_input_kr = "inside=u'\xc7\xd1\xb1\xdb'"
>>> user_input_uc = user_input_kr.decode('euc-kr')
>>> user_input_uc
u"inside=u'\ud55c\uae00'"
>>> s = compile(user_input_uc, '', 'single')
>>> exec s
>>> inside
u'\ud55c\uae00'
>>> # right

HTH,
John



From exarkun at divmod.com  Sat May 21 21:14:24 2005
From: exarkun at divmod.com (Jp Calderone)
Date: Sun, 22 May 2005 01:14:24 GMT
Subject: first release of PyPy
In-Reply-To: <7xu0kwrsb6.fsf@ruckus.brouhaha.com>
Message-ID: <20050522011424.559.589554705.divmod.quotient.6585@ohm>

On 21 May 2005 17:57:17 -0700, Paul Rubin <"http://phr.cx"@nospam.invalid> wrote:
>Christian Tismer <tismer at stackless.com> writes:
>> Type inference works fine for our implementation of Python,
>> but it is in fact very limited for full-blown Python programs.
>> Yoou cannot do much more than to try to generate effective code
>> for the current situation that you see. But that's most often
>> quite fine.
>
>Type inference (or static type declarations) is one part of compiling
>dynamic languages but I think its importance is overblown in these
>Python compiler threads.  There's lots of compiled Lisp code out there
>that's completely dynamic, with every operation dispatching on the
>type tags in the Lisp objects.  Yes, the code runs slower than when
>the compiler knows the type in advance, but it's still much faster
>than interpreted code.
>
>I'd expect one of the worst bottlenecks in Python is the multiple
>levels of dictionary lookup needed when you say a.x().
> [snip]

  Have you profiler data in support of this?  Suggesting optimizations, especially ones which require semantic changes to existing behavior, without actually knowing that they'll speed things up, or even that they are targetted at bottleneck code, is kind of a waste of time.

  Jp


From bpeng at rice.edu  Tue May  3 21:34:50 2005
From: bpeng at rice.edu (Bo Peng)
Date: Tue, 03 May 2005 20:34:50 -0500
Subject: control precision for str(obj) output?
Message-ID: <d598rq$8fj$1@joe.rice.edu>

Dear list,

I have enjoyed the convenience to output any object with str(obj) for a 
while. However, I get long output for things like str([0.0002]) in my 
output (which bothers my users more than me though). I also do not 
understand why the following is happening:

 >>> str([0.0002])
'[0.00020000000000000001]'
 >>> str(0.0002)
'0.0002'

Is there any way to fix this, other than checking the type of everything 
and output with %.4f?

Many thanks in advance.
Bo


From phillip.watts at anvilcom.com  Thu May  5 11:58:11 2005
From: phillip.watts at anvilcom.com (phil)
Date: Thu, 05 May 2005 10:58:11 -0500
Subject: Newbie.......Python and Networking
References: <1115227469.785695.16360@f14g2000cwb.googlegroups.com>	<mailman.13.1115229251.29826.python-list@python.org>
	<1115305350.366482.190520@f14g2000cwb.googlegroups.com>
Message-ID: <427A4293.8040106@anvilcom.com>

xeron wrote:

> Thanks phil, I think I'll start off with your chat prog (UDP-- 50 lines
> code ) and then try for routing and firewall scripts for linux, yepp
> that would be really tough but why not give it a try, i am going to
> have my vacations for like 13 days so will be preparing for my CCNA and
> also learning python in that duration.
> 
> You have been most helpful through ur well thought and scaled reply
> 
> xeron
> 
> 
I could send you the chat program they wrote if it would help.

It has 2 threads, listener and sender.
Might spoil your fun.
However it is very primitive and asynchronous and needs work.

Oh heck, here it is.
DO NOT PEEK BEYOND THIS POINT IF YOU WISH TO SOLVE YOURSELF.



# chat1.py
# remote unknown, firewall allow UDP 12101

import os
from threading import *
from socket import *

HOST = ''
BUFSIZE = 1024
ListenPort = 12101
ListenAddr = (HOST,ListenPort)

listenersocket = socket(AF_INET,SOCK_DGRAM)
listenersocket.bind(ListenAddr)
sendsocket = socket(AF_INET,SOCK_DGRAM)

sendsocket = socket(AF_INET,SOCK_DGRAM)

def listener():
     while 1:
	msg,addr = listenersocket.recvfrom(BUFSIZE)
	print '<',msg
	if msg == 'die-now': break

def sender():
     print; print
     print 'Type away.  When you are thru with your'
     print '  message, hit enter an extra time'
     print '  to let the other guy know its his turn.'
     print 'To exit, enter exit'
     print; print

     while 1:
	msg = raw_input()
	if msg == 'exit':
                 sendsocket.sendto( 'die-now', ('localhost',ListenPort) )
		break
         sendsocket.sendto( msg, (sendtoip,ListenPort) )
	
# Main program start here
print
sendtoip = raw_input('Enter IP address of other computer: ')
sendtoip = sendtoip.strip()

# Define and start 2 threads
listnr = Thread(target=listener)
sendr = Thread(target=sender)
listnr.start()
sendr.start()
listnr.join()
sendr.join()







From mario at nospam.noext  Wed May 11 17:14:22 2005
From: mario at nospam.noext (Mario)
Date: Wed, 11 May 2005 23:14:22 +0200
Subject: HELP Printing with wxPython
References: <d5t4oj$sct$1@carabinieri.cs.interbusiness.it>
	<1115817121.256876.49790@g49g2000cwa.googlegroups.com>
Message-ID: <d5tsje$rq0$1@balena.cs.interbusiness.it>


"Tim G" <tim.golden at viacom-outdoor.co.uk> wrote:
> Essentially, if you're on Windows (and have no need
> to run on anything else) then consider some of the
> solutions here:
>
> http://tgolden.sc.sabren.com/python/win32_how_do_i/print.html

That was exactly what I needed! Thanks SO MUCH! :) I tested all the
different things and worked perfectly with no problem.

Thanks again, I was trying to do the printing since a lot but never seen
that windows api thing before.

Mario





From snobis at gmx.de  Mon May 16 12:40:43 2005
From: snobis at gmx.de (Stefan Nobis)
Date: Mon, 16 May 2005 18:40:43 +0200
Subject: Newbie : checking semantics
References: <1115503520.392357.230620@f14g2000cwb.googlegroups.com>
	<87d5rrsh7h.fsf@snobis.de>
	<pan.2005.05.16.13.58.07.671337@dalkescientific.com>
	<d6a997$eh4$1@solaris.cc.vt.edu>
Message-ID: <87br7bunsk.fsf@snobis.de>

rbt <rbt at athop1.ath.vt.edu> writes:

> True beginners (no programming experience whatsoever) don't have
> to deal with unlearning stuff such as the bracket plague.

That's true. But they also not very used to give nothing (->
whitespace) a meaning. I teached quite some beginners and most of
them had problems to get the indentation right.

At least in the very beginning IMHO it would be useful to
explicitly end a block with some kind of an end statement.

Meaningful whitespache is not a big problem (as many people seems
to think) but it's also not very obvious and sometimes it causes
at least a little bit trouble.

-- 
Stefan.


From wolfgang.keller.nospam at gmx.de  Mon May  2 16:10:02 2005
From: wolfgang.keller.nospam at gmx.de (Wolfgang Keller)
Date: 2 May 2005 20:10:02 GMT
Subject: Europython schedule vs. accomodation/registration deadlines - HUH?
Message-ID: <xn0e1s852u3kn2008wolfgangkellernospamgmxde@news.individual.de>

Hello,

today I've read the following on the Europython WWW site:

http://www.europython.org/sections/registration_issues/registration_info
rma

"Early bird payment ends 15 May."
"Last day for reserving accomodations is 15 May."

http://www.europython.org/sections/tracks_and_talks/schedule_day_1

"The schedule will be posted in early June."

Are the people who are organising this aware of to what point this is -
sorry - plain nonsense?

The attendees are supposed to register and reserve accomodation before
even being able to know when/whether it will be worth attending for
them?

This isn't serious, is it?

I'm sorry, but I've never encountered this with any kind of
conference...

Best regards

Wolfgang Keller


From dave at pythonapocrypha.com  Tue May 17 11:51:19 2005
From: dave at pythonapocrypha.com (Dave Brueck)
Date: Tue, 17 May 2005 09:51:19 -0600
Subject: Reading image dimensions with PIL
In-Reply-To: <428a0f5c$0$13769$db0fefd9@news.zen.co.uk>
References: <428a0f5c$0$13769$db0fefd9@news.zen.co.uk>
Message-ID: <428A12F7.6050901@pythonapocrypha.com>

Will McGugan wrote:
> I'm writing an app that downloads images. It rejects images that are 
> under a certain size - whithout downloading them completely. I've 
> implemented this using PIL, by downloading the first K and trying to 
> create a PIL image with it. PIL raises an exception because the file is 
> incomplete, but the image object is initialised with the image 
> dimensions, which is what I need. It actualy works well enough, but I'm 
> concerened about side-effects - since it seems an unconventional way of 
> working with PIL. Can anyone see any problems with doing this? Or a 
> better method?

If you're tossing images that are too _small_, is there any benefit to not 
downloading the whole image, checking it, and then throwing it away?

Checking just the first 1K probably won't save you too much time unless you're 
over a modem. Are you using a byte-range HTTP request to pull down the images or 
just a normal GET (via e.g. urllib)? If you're not using a byte-range request, 
then all of the data is already on its way so maybe you could go ahead and get 
it all.

But hey, if your current approach works... :) It _is_ a bit unconventional, so 
to reduce the risk you could test it on a decent mix of image types (normal 
JPEG, progressive JPEG, normal & progressive GIF, png, etc.) - just to make sure 
  PIL is able to handle partial data for all different types you might encounter.

Also, if PIL can't handle the partial data, can you reliably detect that 
scenario? If so, you could detect that case and use the 
download-it-all-and-check approach as a failsafe.

-Dave


From efoda5446 at yahoo.com  Sat May 28 19:32:58 2005
From: efoda5446 at yahoo.com (Lorn)
Date: 28 May 2005 16:32:58 -0700
Subject: String manipulations
In-Reply-To: <mailman.224.1117318560.18027.python-list@python.org>
References: <1117316427.826830.189260@g14g2000cwa.googlegroups.com>
	<MB5me.3507$4N2.3160@newssvr30.news.prodigy.com>
	<1117317133.919080.325250@g14g2000cwa.googlegroups.com>
	<mailman.224.1117318560.18027.python-list@python.org>
Message-ID: <1117323178.149336.177700@g44g2000cwa.googlegroups.com>

Thank you Elliot, this solution is the one I was trying to come up
with. Thank you for your help and thank you to everyone for their
suggestions.

Best regards,
Lorn



From tomlis at notmyisp.pl  Wed May 25 04:08:23 2005
From: tomlis at notmyisp.pl (Tomasz Lisowski)
Date: Wed, 25 May 2005 10:08:23 +0200
Subject: Strange behaviour of floating point constants in imported modules
In-Reply-To: <mailman.18.1116851025.18027.python-list@python.org>
References: <4291b2c0$1@news.home.net.pl>
	<mailman.18.1116851025.18027.python-list@python.org>
Message-ID: <42943273$1@news.home.net.pl>

> This may be relevant to the problems you're seeing:
>     https://sourceforge.net/tracker/?func=detail&atid=305470&aid=774665&group_id=5470
> 
> The short story, as the tracker item paints it, is that setting
> LC_NUMERIC to anything other than 'C' can give results like the ones you
> describe---Python itself should never do this, but third parties code
> may.
> 
> A web search for python LC_NUMERIC should turn up more about this topic,
> probably even some past threads on this mailing list/newsgroup.

You've got the point. My code uses wxLocale class from wxPython, and 
sets the wxLANGUAGE_POLISH locale. After setting this locale, I have 
added the statement:

locale.setlocale(locale.LC_NUMERIC, "C")

and everything seems to be normal now. I agree with the comments in the 
tracker item, that the float, str(), repr() functions should be 
locale-independent. We have the functions in the locale module, if 
someone needs the locale-dependent string-float conversions.

-- 
Tomasz Lisowski


From bokr at oz.net  Mon May  9 20:26:53 2005
From: bokr at oz.net (Bengt Richter)
Date: Tue, 10 May 2005 00:26:53 GMT
Subject: file corruption on windows - possible bug
References: <mailman.211.1115650500.29826.python-list@python.org>
Message-ID: <427ffdfe.1120365971@news.oz.net>

On Mon, 09 May 2005 10:54:22 -0400, Jeremy Jones <zanesdad at bellsouth.net> wrote:

>I've written a piece of code that iterates through a list of items and
>determines the filename to write some piece of data to based on
>something in the item itself.  Here is a small example piece of code to
>show the type of thing I'm doing::
>
>#################################
>file_dict = {}
>
>a_list = [("a", "a%s" % i) for i in range(2500)]
>b_list = [("b", "b%s" % i) for i in range(2500)]
>c_list = [("c", "c%s" % i) for i in range(2500)]
>d_list = [("d", "d%s" % i) for i in range(2500)]
>
>
>joined_list = a_list + b_list + c_list + d_list
>
>for key, value in joined_list:
>    outfile = file_dict.setdefault(key, open("%s.txt" % key, "w"))
You are opening files multiply, since the open is a default value expression that is
always evaluated. Try replacing the above line with the following two lines:
     try: outfile = file_dict[key]
     except KeyError: outfile = file_dict[key] = open("%s.txt" % key, 'w')
>    outfile.write("%s\n" % value)
>
>for f in file_dict.values():
>    f.close()
>#################################
>
>Problem is, when I run this on Windows, I get 14,520 null ("\x00")
>characters at the front of the file and each file is 16,390 bytes long. 
>When I run this script on Linux, each file is 13,890 bytes and contains
>no "\x00" characters.  This piece of code::
>
I don't want to think about the _exact_ explanation, but try the above (untested ;-)
and see if the symptoms change ;-)

Regards,
Bengt Richter


From philippe at philippecmartin.com  Tue May 17 10:41:14 2005
From: philippe at philippecmartin.com (Philippe C. Martin)
Date: Tue, 17 May 2005 14:41:14 GMT
Subject: Sorting x lists based on one list
Message-ID: <eonie.426$VB6.363@newssvr12.news.prodigy.com>

Hi,

I'm looking for an easy algorithm - maybe Python can help:

I start with X lists which intial sort is based on list #1.

I want to reverse sort list #1 and have all other lists sorted accordingly.

Any idea is welcome.

Regards,

Philippe



From littlejohn.75 at news.free.fr  Tue May 31 02:08:55 2005
From: littlejohn.75 at news.free.fr (F. Petitjean)
Date: 31 May 2005 06:08:55 GMT
Subject: eric3 question
References: <MSGID_2=3A5025=2F3.131_429bd668@fidonet.org>
Message-ID: <429bff77$0$14676$626a14ce@news.free.fr>

Le Tue, 31 May 2005 03:13:31 +0400, Alexander Zatvornitskiy a ?crit :
> Hello All!
> 
> I'am using eric3 IDE under win32 (snapshot 2005-04-10), and have a trouble. I
> use this code:
>     print "enter q to quit, or smthing else to continue"
>     while not sys.stdin.readline()=="q":
>         smthing(else)
> 
      prompt = "enter q to quit, or smthing else to continue"
      req = raw_input(prompt)
      if req == "q":
          raise SystemExit()
      smthing(else)
> Thank you in advance
> 
> Alexander, zatv at bk.ru


From danb_83 at yahoo.com  Thu May 19 18:03:22 2005
From: danb_83 at yahoo.com (Dan Bishop)
Date: 19 May 2005 15:03:22 -0700
Subject: Comparing 2 similar strings?
In-Reply-To: <pan.2005.05.19.15.47.09.713982@REMOVETHIScyber.com.au>
References: <24a6d$428b9c10$d1b717f8$2300@PRIMUS.CA>
	<428BA05D.1010600@lsupcaemnt.com>
	<3d9n815cpmavos1fl6ts712h9qogdv3fur@4ax.com>
	<tOydnZJPi5FmeBbfRVn-3A@comcast.com>
	<ukqn811uo3qaa5lpihfq1fu71auuslel10@4ax.com>
	<wOSdnW21Bo1qlBHfRVn-uQ@comcast.com>
	<153o811mt7uhqa3aojb5101sd7qo4jrgps@4ax.com>
	<pan.2005.05.19.15.47.09.713982@REMOVETHIScyber.com.au>
Message-ID: <1116540202.662361.61530@f14g2000cwb.googlegroups.com>

Steven D'Aprano wrote:
> On Thu, 19 May 2005 14:09:32 +1000, John Machin wrote:
>
> > None of the other approaches make the mistake of preserving the
first
> > letter -- this alone is almost enough reason for jettisoning
soundex.
>
> Off-topic now, but you've made me curious.
>
> Why is this a bad idea?

Because of situations like, for example, my mother's last name, which
originally started with "Y" but got anglicized to a name beginning with
"E".  Same name, different Soundex codes, and the problem occurs only
occurs because of Soundex's preservation of the exact initial letter.

> How would you handle the case of "barow" and "marow"? (Barrow and
> marrow, naturally.) Without the first letter, they sound identical.
Why is
> throwing that information away a good thing?

No one's suggesting throwing away the first letter's information, just
removing the special treatment for it.  "Barow" becomes 1600 and
"Marow" becomes 5600.



From slick_mick_00 at hotmail.com  Tue May 31 14:35:32 2005
From: slick_mick_00 at hotmail.com (Michael)
Date: Tue, 31 May 2005 18:35:32 +0000 (UTC)
Subject: working with pointers
Message-ID: <d7iapk$6ck$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>

Do expicit pointers exist in python??

if i do:

a = [5,7]
b = a

a.empty()

b = ?

how do i do explicit pointers??

Mike




From rkern at ucsd.edu  Mon May  9 00:58:00 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Sun, 08 May 2005 21:58:00 -0700
Subject: Fredrik Lundh
In-Reply-To: <k42dnWFaUMRQeePfRVn-pg@comcast.com>
References: <mailman.139.1115189526.6583.python-list@python.org><maednQfrx_iwL-XfRVn-hA@powergate.ca>	<Av-dnbF5u_SOpOffRVn-vQ@comcast.com>	<mailman.66.1115324909.29826.python-list@python.org>
	<k42dnWFaUMRQeePfRVn-pg@comcast.com>
Message-ID: <d5mq7a$gd0$1@sea.gmane.org>

D H wrote:
> Fredrik Lundh wrote:

>>you forgot to mention Boo here, Doug.  nice IronPython announcement,
>>btw.  the Boo developers must be so proud of you.
>>
>></F>
> 
> You never learn, do you Fredrik.  I guess that explains why Boo will 
> never be mentioned on the python daily site your pythonware business 
> controls.

It's called Daily Python-URL not Daily Python-Like-Languages-URL. *That* 
explains it. It's not like Pythonware is hiding its relationship.

> Here are some of Fredrik's funnier crazy rants right here:
> http://www.oreillynet.com/pub/wlg/6291

Funny you should mention that article since I showed that Fredrik's 
benchmarks were correctly done (if not diligently-reported) while Uche's 
were wrong on both marks.

http://www.oreillynet.com/cs/user/view/cs_msg/51158

> Any that you perceive as competition and threatening to your consulting 
> business really draws out your true nature.

Oy, my head hurts. Take it off-list, both of you. The rest of us don't 
care about your bickering.

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From rdsteph at mac.com  Sat May 21 02:59:00 2005
From: rdsteph at mac.com (rdsteph at mac.com)
Date: 20 May 2005 23:59:00 -0700
Subject: Can you introduce some book about python?
In-Reply-To: <mailman.275.1116638412.8733.python-list@python.org>
References: <mailman.4989.1116624266.8732.python-list@python.org>
	<mailman.275.1116638412.8733.python-list@python.org>
Message-ID: <1116658740.355998.267080@z14g2000cwz.googlegroups.com>

You m,igth try my page of Python Book reviews at
http://www.awaretek.com/book.html

Ron Stephens


fdsl ysnh wrote:
> --- python-list-request at python.org??:
>
> > Send Python-list mailing list submissions to
> > 	python-list at python.org
> >
> > To subscribe or unsubscribe via the World Wide Web,
> > visit
> > 	http://mail.python.org/mailman/listinfo/python-list
> > or, via email, send a message with subject or body
> > 'help' to
> > 	python-list-request at python.org
> >
> > You can reach the person managing the list at
> > 	python-list-owner at python.org
> >
> > When replying, please edit your Subject line so it
> > is more specific
> > than "Re: Contents of Python-list digest..."
> > > Today's Topics:
> >
> >    1. Re: appending key-value pairs to a dict (Peter
> > Hansen)
> >    2. Re: Is Python suitable for a huge, enterprise
> > size app?
> >       (Paul Rubin)
> >    3. Re: appending key-value pairs to a dict (Brian
> > Beck)
> >    4. Re: Comparing 2 similar strings? (Skip
> > Montanaro)
> >    5. Re: Is Python suitable for a huge, enterprise
> > size app?
> >       (Paul Rubin)
> >    6. Re: buffer_info error (ashtonn at gmail.com)
> >    7. Re: appending key-value pairs to a dict (James
> > Stroud)
> >    8. From the call hook, how do I know more
> > precisely what is
> >       called? (Vijay Kumar)
> >    9. Re: PyGame and Rotozoom (Sorry if OT) (Lee
> > Harr)
> >   10. Re: buffer_info error (Jp Calderone)
> >   11. Re: appending key-value pairs to a dict (Roy
> > Smith)
> >   12. Re: Is Python suitable for a huge, enterprise
> > size app?
> >       (Dave Brueck)
> >   13. Re: Process monitoring (John Abel)
> > > ???: Peter Hansen <peter at engcorp.com>
> > ???: python-list at python.org
> > ??: Fri, 20 May 2005 16:12:17 -0400
> > ??: Re: appending key-value pairs to a dict
> >
> > rbt wrote:
> > > I know how to setup an empty list and loop thru
> > something... appending
> > > to the list on each loop... how does this work
> > with dicts?
> > >
> > > I'm looping thru a list of files and I want to put
> > the file's name and
> > > its sha hash into a dict on each loop.
> >
> > Whereas with a list you would call "append" in the
> > loop, with a
> > dictionary you simply use an indexed-assignment type
> > of access:
> >
> > mydict = {}
> > for filename in some_list_of_filenames:
> >      hash =
> > sha.sha(open(filename).read()).hexdigest() # or
> > whatever
> >      mydict[filename] = hash
> >
> > -Peter
> >
> > > ???: Paul Rubin <http://phr.cx at NOSPAM.invalid>
> > ???: python-list at python.org
> > ??: 20 May 2005 13:12:50 -0700
> > ??: Re: Is Python suitable for a huge, enterprise
> > size app?
> >
> > Dave Brueck <dave at pythonapocrypha.com> writes:
> > > One thing from your experience that did resonate
> > with me is that,
> > > except for ftplib and occasionally urllib (for
> > basic, one-shot GETs),
> > > we don't use any of the standard library's
> > "protocol" modules - partly
> > > because we had to implement our own HTTP libraries
> > for performance and
> > > scalability reasons anyway, and partly because we
> > had trouble figuring
> > > out e.g. all the ins and outs of
> > urllib/urllib2/httplib.
> >
> > What do you use for HTTPS?  And did you use the
> > Cookie module in your
> > HTTP servers?  You may have had problems without
> > even being aware of
> > them (until recently if you used Cookie with its
> > default settings, any
> > attacker could completely take over your server by
> > sending you
> > carefully concoted cookies).  I'm not trying to be
> > contentious here,
> > just mentioning a couple further cases of where
> > problems aren't
> > visible from far away but are there when you look
> > close.
> >
> > > ???: Brian Beck <exogen at gmail.com>
> > ???: python-list at python.org
> > ??: Fri, 20 May 2005 16:14:17 -0400
> > ??: Re: appending key-value pairs to a dict
> >
> > rbt wrote:
> > > I know how to setup an empty list and loop thru
> > something... appending
> > > to the list on each loop... how does this work
> > with dicts?
> > >
> > > I'm looping thru a list of files and I want to put
> > the file's name and
> > > its sha hash into a dict on each loop.
> >
> > Like so:
> >
> > d = {}
> > for filename in files:
> >      d[sha_func(filename)] = filename
> >
> >
> > Or like so:
> >
> > d = dict([(sha_func(filename), filename) for
> > filename in files])
> >
> > --
> > Brian Beck
> > Adventurer of the First Order
> >
> > > ???: Skip Montanaro <skip at pobox.com>
> > ??: python-list at python.org
> > ???: Steve Holden <steve at holdenweb.com>
> > ??: Fri, 20 May 2005 15:16:49 -0500
> > ??: Re: Comparing 2 similar strings?
> >
> >
> >     Steve> (is this the same as 'Conchobar'?)
> >
> > No, that's a trendy pub in Key West...
> >
> > <wink>
> >
> > Skip
> >
> > > ???: Paul Rubin <http://phr.cx at NOSPAM.invalid>
> > ???: python-list at python.org
> > ??: 20 May 2005 13:15:48 -0700
> > ??: Re: Is Python suitable for a huge, enterprise
> > size app?
> >
> > "Fredrik Lundh" <fredrik at pythonware.com> writes:
> > > this has been reported before, and it won't get
> > fixed (unless you're
> > > volunteering to add Python-compatible garbage
> > collection to Tk, that is).
> >
> > Yeah, I think I understand what the issue is.  I can
> > think of some
> > kludgy possible fixes but I assume they've been
> > thought about already
> > and rejected.  The workaround of making the
> > application save an extra
> > reference isn't too bad, but all relevant docs that
> > say anything about
> > these images should mention the requirement
> > emphatically.
> >
> > > ???: "ashtonn at gmail.com" <doodle4 at gmail.com>
> > ???: python-list at python.org
> > ??: 20 May 2005 13:18:33 -0700
> > ??: Re: buffer_info error
> >
> > i am filling in a packet with source and destination
> > address and using
> > the buffer_info call to pass on the address to an
> > underlying low level
> > call.
> >
> > The src and dest are strings, but buffer_info
> > expects an array. How do
> > i deal with this?
> >
> >
> > > ???: James Stroud <jstroud at mbi.ucla.edu>
> > ???: python-list at python.org
> > ??: Fri, 20 May 2005 13:20:48 -0700
> > ??: Re: appending key-value pairs to a dict
> >
> > On Friday 20 May 2005 01:04 pm, rbt wrote:
> > > I know how to setup an empty list and loop thru
> > something... appending
> > > to the list on each loop... how does this work
> > with dicts?
> > >
> > > I'm looping thru a list of files and I want to put
> > the file's name and
> > > its sha hash into a dict on each loop.
> > >
> > > Many thanks,
> > >
> > > rbt
> >
> > Simple assignment.
> >
> > adict[filename] = an_sha_hash
> >
> >
> >
> > --
> > James Stroud
> > UCLA-DOE Institute for Genomics and Proteomics
> > Box 951570
> > Los Angeles, CA 90095
> >
> > http://www.jamesstroud.com/
> >
> > > ???: Vijay Kumar <getvijay at gmail.com>
> > ??: vsuryade at cs.nmsu.edu
> > ???: python-list at python.org
> > ??: Fri, 20 May 2005 14:21:33 -0600
> > ??: From the call hook, how do I know more
> > precisely what is called?
> >
> > Hi,
> >
> > I wrote a trace function using the profiling and
> > tracing hooks
> > provided by the python interpreter.
> >
> > The Python interpreter reports the calls occuring in
> > the source
> > program to my trace function.
> >
> > How can I know whether the call happened is a
> > function call or method
> > call and if it is a method call what is its self
> > object and/or  class
> > is?.
> >
> > I receive a frame object from the interpreter for
> > every call.
> >
> > Thanks,
> > Vijay.
> >
> > > ???: Lee Harr <lee at example.com>
> > ???: python-list at python.org
> > ??: Fri, 20 May 2005 20:38:45 GMT
> > ??: Re: PyGame and Rotozoom (Sorry if OT)
> >
> > On 2005-05-20, J. W. McCall <jmccall at houston.rr.com>
> > wrote:
> > > I'm not sure if this is off-topic, since it
> > doesn't deal with Python
> > > itself, but here goes:
> > >
> > > I'm messing around with writing a simple "game"
> > where the player (a
> > > crudely drawn smiley face) moves by rotating and
> > moving back or forward
> > > (think Resident Evil, but from an always-above
> > view).  After much
> > > hacking, I have it working where left and right
> > rotate the player sprite
> > > and up always moves the sprite whichever direction
> > it's facing, while
> > > down is reverse.  I'm using
> > pygame.transform.RotoZoom().
> > >
> > > My problem is that it doesn't rotate smoothly.
> > When it rotates, the
> > > corners of the image (just a plain white
> > background) look like they're
> > > hitting some barrier and making it move around.
> > Think of an empty box
> > > turned diagonally (so that it looks like a
> > diamond, with its open end
> > > facing you), and a cube in that box being turned
> > while it's resting in
> > > the bottom corner.  I want it to rotate smoothly
> > around its center, it's
> > > it's not doing that.
> > >
> > > I'm guessing that it has something to do with me
> > not setting up a Rect
> > > right, but I'm not sure.  Maybe this is a
> > limitation of Rotozoom/Rotate?
> > >
> > > Any advice would be greatly appreciated.  And yes,
> > I'm a rank PyGame newbie.
> > >
> >
> >
> >
> > You might want to try pygsear:
> > http://www.nongnu.org/pygsear/
> >
> > It has a RotatedImage class which takes care of
> > rotating
> > things for you. See the examples roti.py and
> > wings.py
> > for some use of rotated image sprites.
> >
> > > ???: Jp Calderone <exarkun at divmod.com>
> > ???: python-list at python.org
> > ??: Fri, 20 May 2005 20:45:00 GMT
> > ??: Re: buffer_info error
> >
> > On 20 May 2005 13:18:33 -0700, "ashtonn at gmail.com"
> > <doodle4 at gmail.com> wrote:
> > >i am filling in a packet with source and
> > destination address and using
> > >the buffer_info call to pass on the address to an
> > underlying low level
> > >call.
> > >
> > >The src and dest are strings, but buffer_info
> > expects an array. How do
> > >i deal with this?
> >
> >   What's the low-level call you're invoking?
> >
> >   Jp
> >
> > > ???: roy at panix.com (Roy Smith)
> > ???: python-list at python.org
> > ??: 20 May 2005 16:50:39 -0400
> > ??: Re: appending key-value pairs to a dict
> >
> > rbt  <rbt at athop1.ath.vt.edu> wrote:
> > >I know how to setup an empty list and loop thru
> > something... appending
> > >to the list on each loop... how does this work with
> > dicts?
> > >
> > >I'm looping thru a list of files and I want to put
> > the file's name and
> > >its sha hash into a dict on each loop.
> >
> > You just assign values to keys.  If the key doesn't
> > exist, it's
> > created automagically.  You want something like
> > this:
> >
> > shaDict = {}
> > for fileName in fileNameList:
> >     hash = generateShaHash (fileName)
> >     shaDict[hash] = fileName
> >
> > > ???: Dave Brueck <dave at pythonapocrypha.com>
> > ???: python-list at python.org
> > ??: Fri, 20 May 2005 15:07:05 -0600
> > ??: Re: Is Python suitable for a huge, enterprise
> > size app?
> >
> > Paul Rubin wrote:
> > > Dave Brueck <dave at pythonapocrypha.com> writes:
> > >
> > >>One thing from your experience that did resonate
> > with me is that,
> > >>except for ftplib and occasionally urllib (for
> > basic, one-shot GETs),
> > >>we don't use any of the standard library's
> > "protocol" modules - partly
> > >>because we had to implement our own HTTP libraries
> > for performance and
> > >>scalability reasons anyway, and partly because we
> > had trouble figuring
> > >>out e.g. all the ins and outs of
> > urllib/urllib2/httplib.
> > >
> > >
> > > What do you use for HTTPS?
> >
> > Hi Paul,
> >
> > m2crypto (plus some patches to make asynchronous SSL
> > do what we needed).
> >
> > > And did you use the Cookie module in your
> > > HTTP servers?  You may have had problems without
> > even being aware of
> > > them (until recently if you used Cookie with its
> > default settings, any
> > > attacker could completely take over your server by
> > sending you
> > > carefully concoted cookies).
> >
> > Are you referring to the use of pickle for cookie
> > serialization? In any case, we
> > didn't use Cookie.py from the stdlib (on the
> > servers, nearly everything related
> > to URLs & HTTP was custom-built, with the exception
> > of urlparse, for the
> > aforemenioned reasons).
> >
> > -Dave
> >
> > > ???: John Abel <johnfabel at btinternet.com>
> > ??: python-list at python.org
> > ??: Fri, 20 May 2005 22:24:14 +0100
> > ??: Re: Process monitoring
> >
> > gsteff wrote:
> >
> > >Hey, I'm working on a Python program that will
> > launch some other
> > >non-Python process using os.spawn (in the
> > os.P_NOWAIT mode) and then
> > >basically wait for it to finish (while doing some
> > other stuff in the
> > >interim).  Normally, the new process will signal
> > that it's done by
> > >writing to a file, but I'd like to also find out if
> > the new process
> > >died unexpectedly.  Anyone know any preferrable
> > ways to do this?
> > >
> > >Greg Steffensen
> > >
> > >
> > >
> > If you're using 2.4, have a look at the subprocess
> > module.
> >
> > J
> >
> > > --
> > http://mail.python.org/mailman/listinfo/python-list
> I am a beginner,Can you introduce some book about
> python? I am a student of china
>
> _________________________________________________________
> Do You Yahoo!?
> 150??MP3????????????
>
http://cn.rd.yahoo.com/mail_cn/tag/yisou/music/*http://music.yisou.com/
> ???????????????????
>
http://cn.rd.yahoo.com/mail_cn/tag/yisou/image/*http://image.yisou.com
> 1G??1000???????????
>
http://cn.rd.yahoo.com/mail_cn/tag/1g/*http://cn.mail.yahoo.com/event/mail_1g/



From ccurvey at gmail.com  Mon May  9 11:08:54 2005
From: ccurvey at gmail.com (Chris Curvey)
Date: 9 May 2005 08:08:54 -0700
Subject: include "apythonscript.py"
In-Reply-To: <1115648730.390588.158760@z14g2000cwz.googlegroups.com>
References: <1115648730.390588.158760@z14g2000cwz.googlegroups.com>
Message-ID: <1115651334.811250.60520@o13g2000cwo.googlegroups.com>

the PHP include doesn't have an exact match in Python, but I think you
can do what you intend.

To follow the first example from php.net, this would work

vars.py
color = 'green'
fruit = 'apple'

test.py
from vars import *
print "A " , color, fruit 

HTH



From Scott.Daniels at Acm.Org  Tue May 10 19:32:21 2005
From: Scott.Daniels at Acm.Org (Scott David Daniels)
Date: Tue, 10 May 2005 16:32:21 -0700
Subject: Need a little parse help
In-Reply-To: <mailman.310.1115747834.29826.python-list@python.org>
References: <mailman.310.1115747834.29826.python-list@python.org>
Message-ID: <42813e4d$1@nntp0.pdx.net>

Alex Nordhus wrote:
...
>     for ln in inputfile.readlines():
>         words = string.split(ln)
>         if len(words) >= 2:
> #	    print (words[1])
Try:
             print >>outputfile, words[1]

--Scott David Daniels
Scott.Daniels at Acm.Org


From phillip.watts at anvilcom.com  Mon May  9 15:32:36 2005
From: phillip.watts at anvilcom.com (phil)
Date: Mon, 09 May 2005 14:32:36 -0500
Subject: Advice needed on __del__
References: <d5o1s1$8h3$1@sea.gmane.org> <d5obmp$cqh$1@sea.gmane.org>
Message-ID: <427FBAD4.3070004@anvilcom.com>

> 
> Python makes no guarantees whatsover about when and how to
> run __del__, so relying on it to remove user-visible resources is a
> rather bad idea.
> 

What does that mean?  Is it a destructor or not?
I create thousands of instances of objects in a geometry
instruction program and rely heavliy on __del__ to do its
thing.  For instance when I am rotating objects, I delete and
recreate somtimes hundreds of times. Works so far.

What worries me about the above statement is two things:
1. I'm using 2.3.4.  Am I in for some nasty surprise later?
2. If Python is an oop language, meaning instances of classes
     are essential, then a reliable destructor method is essential.

If I am skating on thin ice here, please tell me for I have some
complex software invested in __del__.

By the way, I understand that __del__ is only called when the last
reference to an instance is deled.  That's fine, if consistent.



From kasimov at i.com.ua  Mon May 23 06:08:12 2005
From: kasimov at i.com.ua (Maksim Kasimov)
Date: Mon, 23 May 2005 13:08:12 +0300
Subject: Manipulating mailboxes
In-Reply-To: <mailman.11.1116838742.18027.python-list@python.org>
References: <mailman.11.1116838742.18027.python-list@python.org>
Message-ID: <d6sa90$5c7$1@news.tsystems.kiev.ua>


change header information, insert messages into a database, delete/add messages, should not store passwords for all users, ... and any things else you wish to do - if your OS is UNIX - just forward mail messages of some users to your python script (you don't need to write a daemon for this)
All you need is to place file ".forward" in users home directory, and write like this:
|/path/myscript.py

and chmod the script:
chmod 777 /path/myscript.py

Laszlo Zsolt Nagy wrote:
> 
> Hi All,
> 
> I need to create a daemon that sits on a server and forwards some 
> e-mails. (Well not only that, it needs to change header information 
> before forwarding and also insert messages into a database). The mailbox 
> module is fine but I do not see a way to delete/add messages - it is 
> ready only. The other possiblity is IMAP4 but it is bad because my 
> program should not store passwords for all users. I can only see one 
> solution right now:
> 
> 1. Make a copy of the mailbox
> 2. Truncate the mailbox
> 3. Process the messages in the copy and forward the e-mails by sending 
> out real e-mails.
> 
> But this looks so clumsy. Is there a way to delete/add messages to 
> mailboxes of different users, directly?
> 
> Thanks,
> 
>  Laci 2.0
> 


-- 
Best regards,
Maksim Kasimov
mailto: kasimov at i.com.ua


From w.ruijter at alumnus.utwente.nl  Wed May 18 23:13:54 2005
From: w.ruijter at alumnus.utwente.nl (wout)
Date: Thu, 19 May 2005 04:13:54 +0100
Subject: Help on slow attribute copy
In-Reply-To: <1116466431.390000.308010@g44g2000cwa.googlegroups.com>
References: <mailman.171.1116453597.8733.python-list@python.org>	<1116457391.943711.304790@g44g2000cwa.googlegroups.com>	<mailman.178.1116459742.8733.python-list@python.org>
	<1116466431.390000.308010@g44g2000cwa.googlegroups.com>
Message-ID: <428C0472.1010806@alumnus.utwente.nl>

bgs wrote:

>Hmm, it looks like the dot operator has been overloaded to do something
>complicated.  (although if you haven't already, try "for i in nodes:
>pass" just to make sure).  Is it retrieving the data from the network
>  
>
I tried that (the pass), that runs fast as it should

>somewhere?  If so, then it looks like it is probably retrieving each
>coordinate individually on each iteration of the loop.  Perhaps there
>is some way of retrieving them all in one bunch?
>  
>
I guess it is looking up the node locations from the database with 
individual queries. As the source for the interface is not provided 
(only pyc) I will not find out.

>It's difficult to say more without knowing anything about abaqus and
>its interface.
>
I'll look for a 'heap lookup', otherwise I'll have to do text parsing...
Thanks loads anyway
Wout


From m at m.com  Mon May  2 06:29:33 2005
From: m at m.com (monkey)
Date: Mon, 2 May 2005 18:29:33 +0800
Subject: Is python support jxta now?
Message-ID: <42760108$1_2@rain.i-cable.com>

Hi all, just read from the jxta.org that a python implemention of jxta
framework is being developed. But its project page doesn't state whether it
can be use now..

I am interested to learn to develop p2p app, that's why I am studying python
now. Or there is any lib in python that already implement a p2p protocol?
Please insight me, thanks a lot ( :




From martin at v.loewis.de  Wed May 18 13:30:43 2005
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Wed, 18 May 2005 19:30:43 +0200
Subject: SSL (HTTPS) with 2.4
In-Reply-To: <1116424660.917136.79680@g47g2000cwa.googlegroups.com>
References: <1116392416.139727.84630@g49g2000cwa.googlegroups.com>
	<428AD4D1.8030405@v.loewis.de>
	<1116396878.995648.206820@g49g2000cwa.googlegroups.com>
	<1116406256.213128.68180@f14g2000cwb.googlegroups.com>
	<grGie.3984$uR4.2802@newsread2.news.atl.earthlink.net>
	<1116422715.320683.228810@g49g2000cwa.googlegroups.com>
	<1116424363.953180.79260@g47g2000cwa.googlegroups.com>
	<1116424660.917136.79680@g47g2000cwa.googlegroups.com>
Message-ID: <428b7bc5$0$7346$9b622d9e@news.freenet.de>

Bloke wrote:
> Following my above comment, if my script works with http, then what is
> the problem with https, even when I change the ProxyHandler to specify
> https?

I believe there is a bug in the https implementations of certain Web
services, in particular the Microsoft-ish ones. They are supposed to
send a message to close the connection, but fail to do so. Instead,
they eventually shut down the connection (without sending a
CloseConnection message first).

So part of the problem is that your web server, in violation of the
protocol, just drops the connection.

The other question is why there is a period of inactivity. This, again,
may be the result of a misunderstanding in the protocol implementations,
of which the first problem is only a side effect (i.e. the server might
close the connection because of the inactivity).

This typically means that either side is expecting the other one to send
a message, but both sides fail to do so. Which one specifically is buggy
can only be determined by studying the messages sent back and forth in
more detail.

As a wild guess: try not to use HTTP/1.1, use HTTP/1.0 instead. To do
so, try not using urllib, use httplib directly.

Regards,
Martin



From lbates at syscononline.com  Tue May 10 09:31:30 2005
From: lbates at syscononline.com (Larry Bates)
Date: Tue, 10 May 2005 08:31:30 -0500
Subject: Regarding Mail sending Module
In-Reply-To: <mailman.281.1115725316.29826.python-list@python.org>
References: <mailman.281.1115725316.29826.python-list@python.org>
Message-ID: <4280B7B2.9060207@syscononline.com>

There is a great class for doing just this at:

http://motion.technolust.cx/related/send_jpg.py

I've used it many times and it has worked very
well.

-Larry Bates


praba kar wrote:
> Dear All,
>       In Php we can do all the mailing operations like
> sending a text as a message, adding attachment to a
> mail, adding additional headers and so on using
> Mail_mime class.  I want to know like that class or
> modules in Python. 
>    I already gone through MimeWriter,smtplib and so
> on. But I can't get clear details. so if anyone know
> regarding this kindly give me answer
> 
> regards
> Prabahar
> 
> 
> ________________________________________________________________________
> Yahoo! India Matrimony: Find your life partner online
> Go to: http://yahoo.shaadi.com/india-matrimony



From ojokimu at yahoo.co.uk  Tue May  3 20:09:27 2005
From: ojokimu at yahoo.co.uk (John Ridley)
Date: Wed, 4 May 2005 01:09:27 +0100 (BST)
Subject: xmlrpclib and decoding entity references
Message-ID: <20050504000927.41296.qmail@web26809.mail.ukl.yahoo.com>

Chris Curvey wrote on Tue, 03 May 2005 08:10:50 -0700:

> Can anyone give me a lead on how to convert the entity references
> into something that will make it through to my method call?

The xmllib module has a function for doing this:

>>> import xmllib
>>> xmllib.XMLParser().translate_references(your_xml_sample)

xmllib is now obsolete, but you could copy and paste the relevant parts
to your project as they only amount to a fifty-line function and few
regular expressions.

HTH

John Ridley

Send instant messages to your online friends http://uk.messenger.yahoo.com 


From dkertis at gmail.com  Thu May 26 11:22:10 2005
From: dkertis at gmail.com (DJK)
Date: 26 May 2005 08:22:10 -0700
Subject: vim configuration for python
References: <d73255$e8b$1@nntp1.jpl.nasa.gov>
	<1117089208.241431@cswreg.cos.agilent.com>
Message-ID: <1117120930.900628.149250@g14g2000cwa.googlegroups.com>

Does anybody know of any scripts to check python syntax when you type
:make?



From wuwei23 at gmail.com  Thu May 26 02:16:07 2005
From: wuwei23 at gmail.com (alex23)
Date: 25 May 2005 23:16:07 -0700
Subject: evaluated function defaults: stored where?
In-Reply-To: <gsble.1244$m%3.385@trnddc02>
References: <gsble.1244$m%3.385@trnddc02>
Message-ID: <1117088167.098599.82510@g14g2000cwa.googlegroups.com>

I wrote: (some guff on default parameters)

Of course, it helps if I actually include the alternative function's
code:

>>> def foo(a, b = None):
... 	if b == None: b = []
... 	b.append(a)
... 	return b

Sorry about that :)

-alex23



From awb at fluent.com  Thu May 19 10:31:16 2005
From: awb at fluent.com (Andrew Bushnell)
Date: Thu, 19 May 2005 10:31:16 -0400
Subject: SSL (HTTPS) with 2.4
In-Reply-To: <1116463961.944713.210860@g49g2000cwa.googlegroups.com>
References: <1116392416.139727.84630@g49g2000cwa.googlegroups.com>	<428AD4D1.8030405@v.loewis.de>	<1116396878.995648.206820@g49g2000cwa.googlegroups.com>	<1116406256.213128.68180@f14g2000cwb.googlegroups.com>	<grGie.3984$uR4.2802@newsread2.news.atl.earthlink.net>	<1116422715.320683.228810@g49g2000cwa.googlegroups.com>	<1116424363.953180.79260@g47g2000cwa.googlegroups.com>	<1116424660.917136.79680@g47g2000cwa.googlegroups.com>	<428b7bc5$0$7346$9b622d9e@news.freenet.de>
	<1116463961.944713.210860@g49g2000cwa.googlegroups.com>
Message-ID: <428CA334.1090606@fluent.com>

I am interested in any further progress with this, you may have made? I 
am facing a similar issue. In short, I need to connect to a https site 
(in this case a WSDL) that I need to access through an Http proxy. I 
have tried various things to no avail. I did find a couple recipes on 
the ASPN python cookbook that talk about tunneling via a "CONNECT" 
request is what I believe I need to do. The recipes are:

http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/301740

this particular example establishes the proxy connection and then issues 
the connect request to establish the connection to the https site, then 
tries to establish an SSL Socket connection to the proxy then talk 
through it to get the data from the https via the proxy, I get the same 
EOF error when I run this sample with our proxy..

The other recipe I looked at was:

http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/213238

This is a tunneling mechanism. When I try this, I basically get 
"nowhere" in other words, the get request never gets picked up by the 
various socket/servers setup to do the tunneling and it just loops 
around seemingly forever..

I am running on Windows XP if that matters.

Of course, Mozilla and I.E. work fine accessing the https site in 
question via our proxy. In short, I simply need to connect to a http 
proxy and through it get at a url which is an https. I do not need any 
user name or password etc. to get to the site. The standard Python 
libraries fail as the "GET" request through the proxy is dismissed as a 
bad request.

Any help is greatly appreciated.

- Andrew Bushnell

Bloke wrote:

> Thanks Martin.
> 
> The problem seems to lie with our company proxy (which requires
> authentication).  I have tried retrieving the page on another network
> with a transparent proxy, and it all works fine.  Unfortnately, any
> https page I try to retrieve on the company network fails in this way
> with after a long period of inactivity.  However, I can retrieve the
> page using a standard browser through the same company network.  I
> think there must be something weird going on with our proxy server.
> 

-- 
************************************
Andrew Bushnell
Lead Development Engineer
Fluent Inc.
10 Cavendish Court
Centerra Resource Park
Lebanon, NH  03766
awb at fluent.com
Phone: 603-643-2600, ext. 757
Fax: 603-643-1721
www.fluent.com
************************************


From exarkun at divmod.com  Thu May 19 13:33:19 2005
From: exarkun at divmod.com (Jp Calderone)
Date: Thu, 19 May 2005 17:33:19 GMT
Subject: Twisted an several CPUs
In-Reply-To: <pan.2005.05.19.15.22.30.611015@thomas-guettler.de>
Message-ID: <20050519173319.559.1180769072.divmod.quotient.4561@ohm>

On Thu, 19 May 2005 17:22:31 +0200, Thomas Guettler <guettli at thomas-guettler.de> wrote:
>Hi,
>
>Out of sheer curiosity:
>
>Does Twisted scale if the server has several CPUs?
>

  No more than any other single-process Python application (no less, either).  Unless you run multiple processes...

>As far as I know twisted uses one interpreter. This
>means a prefork server modul might be better to
>server database driven web-apps.

  Why does it mean that?  Your database is already running in a separate process, right?  So there's SMP exploitation right there, regardless of whether your Python process is running with Twisted or anything else.

>
>Has anyone experience high load and twisted?
>

  Distributing load across multiple machines scales better than distributing it over multiple CPUs in a single machine.  If you have serious scalability requirements, SMP is a minor step in the wrong direction (unless you're talking about something like 128-way SMP on a supercomputer :)

  Plus, any solution that works across multiple machines is likely to be trivially adaptable to work across multiple CPUs on a single machine, so when your desktop has a 128-way cell processor in it, you'll still be able to take advantage of it :)

  Jp


From tdickenson at devmail.geminidataloggers.co.uk  Thu May 26 08:54:58 2005
From: tdickenson at devmail.geminidataloggers.co.uk (Toby Dickenson)
Date: Thu, 26 May 2005 13:54:58 +0100
Subject: Python Impact Analysis Tool ?
In-Reply-To: <1117111596.183489.201240@o13g2000cwo.googlegroups.com>
References: <1117027674.787033.113730@f14g2000cwb.googlegroups.com>
	<mailman.110.1117053764.18027.python-list@python.org>
	<1117111596.183489.201240@o13g2000cwo.googlegroups.com>
Message-ID: <200505261354.58555.tdickenson@devmail.geminidataloggers.co.uk>

On Thursday 26 May 2005 13:46, dcolford2000 at hotmail.com wrote:
> Hi
> 
> I am a mainframe designer/progrmmer. What I need is a tool that shows
> me at design time what links to what so that I can understand the
> application. When a design change comes through I could say OK this
> change affects only A, B, and C out of the whole alphanet. Then I would
> be able to isolate what needs to be changed and unit tested..I am
> trying to improve programmer productivity at design time.

For physical dependencies between modules:

http://www.tarind.com/depgraph.html

-- 
Toby Dickenson


From matthew_shomphe at countrywide.com  Mon May 23 16:15:34 2005
From: matthew_shomphe at countrywide.com (Matt)
Date: 23 May 2005 13:15:34 -0700
Subject: no win32com.client
In-Reply-To: <1116878775.133106.240430@z14g2000cwz.googlegroups.com>
References: <1116878775.133106.240430@z14g2000cwz.googlegroups.com>
Message-ID: <1116879334.341631.245570@z14g2000cwz.googlegroups.com>


plsullivan wrote:
> In 2.4.1 the following is generated from a script that ran in 2.2:
>
> import sys, string, os, win32com.client
> ImportError: No module named win32com.client
>
> thanks for any input,
> Phil

Have you downloaded the win32com extensions?

http://starship.python.net/crew/mhammond/win32/Downloads.html



From pantherse at gmail.com  Mon May 16 17:10:42 2005
From: pantherse at gmail.com (PantherSE)
Date: 16 May 2005 14:10:42 -0700
Subject: Socket object and KeyboardInterrupt exception
Message-ID: <1116277842.050635.91870@f14g2000cwb.googlegroups.com>

Hello,

Ok, here's my situation. I have a small application that listens to
messages on a UDP port.

When I pass None to settimeout(), and I hit Ctrl+C to interrupt the
wait my exception handler catches the KeyboardInterrupt exception.
However, if I pass any value to settimeout() the exception is not
caught.

Here's the code snippet

sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
sock.bind(('', 12345)
sock.setblocking(1)
sock.settimeout(100)

try:
    data, msgAddr = sock.recvfrom(1024)
except KeyboardInterrupt:
    print 'Caught keyboard interrupt, stopping'
except socket.timeout:
    print 'Failed to receive message within 100 seconds.'
except Exception:
    print 'Caught exception of type Exception'

I'm running python version 2.3.4 on Red Hat Enterprise 3

Thanks in advance for any info



From steven.bethard at gmail.com  Thu May 12 14:22:48 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Thu, 12 May 2005 12:22:48 -0600
Subject: Python Documentation (should be better?)
In-Reply-To: <mailman.478.1115915427.29826.python-list@python.org>
References: <5C99C308457E6D4EA5448EA52A66004A675A6E@or.mxim.com>	<17026.26789.592527.975821@montanaro.dyndns.org>	<mailman.398.1115843305.29826.python-list@python.org>	<eL2dnQqPycfr7R_fRVn-1w@comcast.com>	<mailman.470.1115911344.29826.python-list@python.org>	<86sm0sig7k.fsf@guru.mired.org>
	<mailman.478.1115915427.29826.python-list@python.org>
Message-ID: <J_udnayhIptlAx7fRVn-3Q@comcast.com>

Skip Montanaro wrote:
>     Mike> Given that Python hides the difference between user-defined
>     Mike> objects and built-in objects, it's not clear to me that anything
>     Mike> other than the current system, with all the classes/types in one
>     Mike> place, makes sense.
> 
> Maybe the Module Index should be renamed "Module/Type Index" and embellished
> with the builtin types, so that you'd find "float (builtin)", "string
> (builtin)", "dict (builtin)", etc. in the appropriate alphabetical
> positions.

+1

Yeah, I'd love to see something like this.  My preference would actually 
to be to leave the "Global Module Index" the same and add a "Builtin 
Type Index" along the lines of the module index.

One of my current problems with the documentation is that, for builtin 
types, the constructor is found in "Built-in Functions"[1], but the 
methods are found in some subsection of "Built-in Types"[2]. 
Additionally, the "Built-in Types"[2] section mixes protocols like the 
Sequence, Iterator and Mapping protocols with the methods of some of the 
  builtin types that implement these protocols.

Here's what I'd like to see happen:

(1) Restructure the "Built-In Objects"[3] section to split "Built-in 
Types" into "Built-in Protocols" and "Built-in Types".  "Built-in 
Protocols" would describe:

  * the Numeric Procotol (__add__, __sub__, __mul__, etc.)
  * the Iterator Protocol (__iter__, next, etc.)
  * the Sequence Protocol (__len__, __getitem__, __iter__, etc.)
  * the Mapping Protocol  (__len__, __getitem__, __iter__, etc.)
  * the File Protocol (read, write, close, etc.)
  * the Set Protocol (__len__, __contains__, etc.)
and possibly
  * the String Protocol (Sequence Protocol + upper, lower, etc.)

"Built-in Types" would describe the types that implement the above 
Protocols, i.e.:

  * bool (Numeric)
  * complex (Numeric)
  * dict (Mapping)
  * file (File, Iterator)
  * float (Numeric)
  * frozenset (Set)
  * function -- link to description of functions
  * int (Numeric)
  * list (Sequence)
  * long (Numeric)
  * object -- link to description of classes
  * set (Set)
  * str (Sequence)
  * tuple (Sequence)
  * type -- link to description of classes
  * unicode (Sequence)
  * xrange (Sequence)

Not sure if I got them all, but that should be close.  Probably this 
section should also contain all the types listed in "Other Built-in 
Types"[4]

(2) Fill in each new "Built-in Type" section with:

  * the constructor documentation (from "Built-in Functions"[1])
  * links to each Protocol that the type implements
  * descriptions of partial implementations of Protocols (e.g. tuple is 
an immutable Sequence)
  * any additional methods of the type that are not part of a protocol

(3) Add a separate page like "Global Module Index"[4] called "Built-in 
Type Index" that links to the sections of the new "Built-in Types".


IMVHO, this would make finding docs about the builtins much easier.

However, this is a fairly large change.  A simpler change that would 
probably get 60-70% of the benefit, would be to just create the 
"Built-in Type Index" page, and link to the current page describing that 
built-in type's Protocol.  It might be a little confusing to click on a 
link that said "str type" and end up at the "Sequence Types" page, but I 
think people could get over it if the more comprehensive solution isn't 
acceptable.

STeVe

[1] http://docs.python.org/lib/built-in-funcs.html
[2] http://docs.python.org/lib/types.html
[3] http://docs.python.org/lib/builtin.html
[4] http://docs.python.org/lib/typesother.html
[5] http://docs.python.org/modindex.html


From pwatson at redlinepy.com  Sat May  7 13:01:48 2005
From: pwatson at redlinepy.com (Paul Watson)
Date: Sat, 7 May 2005 12:01:48 -0500
Subject: Shell Commands in Python Code
References: <mailman.144.1115481338.29826.python-list@python.org>
Message-ID: <3e4akhF13cohU1@individual.net>

"Sara Khalatbari" <sarapythonlist at yahoo.com> wrote in message 
news:mailman.144.1115481338.29826.python-list at python.org...
> There are a lot of commands that I need to use in my
> code & I don't know how to do it
>
> Is there a way to use shell commands in Python code?

Yes, there are many popen() forms that you may wish to investigate.  Below 
is a brief clip.  However, if you can find the functionality already built 
into Python, such as globbing filenames, that would be better.  It will be 
more portable to more systems and probably faster.

x = os.popen("ls -al")
for aline in x.readlines():
    print aline,




From http  Tue May 10 22:26:26 2005
From: http (Paul Rubin)
Date: 10 May 2005 19:26:26 -0700
Subject: pyvm -- faster python
References: <mailman.164.1115548611.29826.python-list@python.org>
	<1115561483.741761.212140@f14g2000cwb.googlegroups.com>
	<m102l2-9qr.ln1@home.rogerbinns.com>
	<mailman.264.1115716603.29826.python-list@python.org>
	<vu38l2-k5v.ln1@home.rogerbinns.com>
Message-ID: <7xvf5qbir1.fsf@ruckus.brouhaha.com>

"Roger Binns" <rogerb at rogerbinns.com> writes:
> That will rule out all the gui frameworks, SSL, cryptography
> and numerous other packages.  Have a look at what happened to
> Prothon.  

I think it would be enough to retarget SWIG.

> What ultimately killed it was the problem of having a decent
> library.

Nah, I think people just lost interest.  Otherwise, why isn't Jython
dead?


From ruach at chpc.utah.edu  Mon May 23 14:38:41 2005
From: ruach at chpc.utah.edu (Matthew Thorley)
Date: Mon, 23 May 2005 12:38:41 -0600
Subject: how do you return an exit code with out exiting
Message-ID: <d6t7vj$rk5$1@vegh.ks.cc.utah.edu>

I wrote a simple python program that scrapes a web page every 30 secons
and dumps the result in a data base. I want to use my linux distros
build in init tools to run the script in the back ground as a daemon.
The problem is when I call the daemon script to background the program I
wrote it just hangs, waiting for my program to exit 1 or 0. My program
never does exits because its looping every 30 seconds.

Is there a way I can pass an exit value with out actualy exiting? or is
there are better way to do this?

Thanks
--
Matthew Thorley


From anthra.norell at tiscalinet.ch  Tue May  3 06:09:31 2005
From: anthra.norell at tiscalinet.ch (Anthra Norell)
Date: Tue, 3 May 2005 12:09:31 +0200
Subject: Data smoothing algorithms? - Thank you all
References: <000c01c54c38$313eb580$0201a8c0@mcuf7><mailman.37.1114800769.14961.python-list@python.org><MLGdnZTDLvEpGe_fRVn-rw@comcast.com><mailman.69.1114896083.14961.python-list@python.org>
	<io1871tev39vustiab1u32fd063skrvl01@4ax.com>
Message-ID: <01c601c54fc8$33339840$0201a8c0@mcuf7>

To contribute to this interesting discussion, which after having provided
practical solutions, has become academic, I believe we are dealing with a
particularly innocuous case of noise infection, innocuous on account of the
noise being conspicuously distinct from the signal. The signal is the orbtal
and rotational motion of the earth. Its period is one year and it is
perfectly smooth in that it is not subject to disturbance, such as impacts
of high-end asteroids. The noise is rounding errors with a period of one
day. If I plot the data and look at the plot from a distance far enough to
make the jitter invisible, what I see is a smooth sinoidal kind of curve.
That is the signal. Looking at the curve close up, what I see is similar to
a trample path. A trample path is a line through a landscape from one place
to another, traced by footprints which display the latitude of bipeds
walking comfortably, that is without the ambition to place their feet
exactly on the line like tight-rope walkers. Looking at the trample path, I
can easly disregard its latitude and perceive the line it traces as its
lateral median. Applying the analogy, I look at my plot as if it were a
trample path, I can then reconstruct  a close approximation of the signal by
drawing a lateral median along the dots. It helps to know that the signal is
perfectly smooth, because that allows me to identify the lateral deviation
of each dot as an artifact of rounding to be discarded. Using a tracing
ruler flexible enough to follow the signal but too inflexible to follow the
rounding errors I could draft a very good line plot.
      Clearly, this kind of reconstruction is curve fitting. The result is
not a formula, but is quiet output data mapping noisy input data. I should
not expect any of my data points to come out exactly right. But that isn't
the goal of the exercise. The goal is to narrow down the margin of error to
consistently fall below a critical limit.
      Interpolation would be artificially increasing the number of data
points by guessing the most likely values between established ones. On the
line plot, the flexible ruler would have done a continous interpolation
together with the curve-fit. Working with numbers, I'd need an interpolation
algorithm to find intermediate data. As my data points happen to pertain to
midnight of each day, I would interpolate if I also needed data for, say,
twelve noon each day. The quality of interpolated data, quite obviously,
depends on the quality of the established adjacent data. That's why I don't
think interpolating noisy data reduces the noise.
      " ... gravitational perturbations, for more than two isolated bodies,
can NOT be predicted via simple polynomials." I have heard about that and
didn't think it would ever pertain to my activities. So I relegated it to
the cerebral regions labeled 'Conversation Topics'.
      " ... the JPL planetary ephemeris file(s) and a copy of Meeus
("Astronomical Algorithms" I believe)... Then basically write the code to
extract the data from the JPL ephemeris and convert to your desired
reference point (that is basically what is done to create these almanacs, in
the first place." This is a vey useful suggestion. Thanks a lot.

Frederic





From lbates at syscononline.com  Tue May 24 08:52:43 2005
From: lbates at syscononline.com (Larry Bates)
Date: Tue, 24 May 2005 07:52:43 -0500
Subject: slow sql server DB reads
In-Reply-To: <3be7534e.0505231315.6a82207e@posting.google.com>
References: <3be7534e.0505231315.6a82207e@posting.google.com>
Message-ID: <4293239B.50802@syscononline.com>

If GUID is not a key in the database make it one.  That
way you won't have to do serial reads through the entire
table to locate matching entries.

It is hard to be more specific because we don't know how
many records are in ASPSessionState table.  If there are
only a few, the problem is probably elsewhere.  If there
are many, indexing on GUID would provide speed improvement.

Larry Bates

bart wrote:
> I run a python website on a IIS server. I replaced my flat file DB
> with SQL server, but the reads are very slow. 7 seconds for 3 querrys
> like these
> 
> conn= adodbapi.connect( "Provider=SQLOLEDB.1;Persist Security
> Info=False;User ID=sa;Password=xxx;Initial Catalog=dlpl;Data
> Source=(local)" )
>         crsr = conn.cursor() 
>         sql = "select SessionKey, SessionValue from ASPSessionState
> where GUID='%s'" % self.id
>         crsr.execute(sql)
>         while 1: 
>             info = crsr.fetchone() 
>             if not info: 
>                 break 
>             strKey = str(info[0])
> 
> Opening the database is already good for 2 seconds. 
> Anyone know how to speed it up?


From qwejohn at hotmail.com  Sat May 21 12:58:39 2005
From: qwejohn at hotmail.com (qwejohn at hotmail.com)
Date: 21 May 2005 09:58:39 -0700
Subject: ImportError: cannot import name  - newbie
Message-ID: <1116694719.716628.64630@g47g2000cwa.googlegroups.com>

Hello,

I am quite a newbie to Python.
I am working on Linux Fedora Core 3.
I have wrote a small program named box.py which has only a constructor:


"""box.py"""

class box:
  def __init__(self):
    print "in box"

This program passes running "python box.py".

I had put this program under /work/dev/mytests/new

Now I want to use it from a second python program, which
resides in a totally different path.

I had tried , in a program named test.py,
"""test.py"""
sys.path = [ '/work/dev/mytests' ] + sys.path
from new import box

class test:
  def __init__(self):
    print "in test"

Running python test.py
I get the following error:

Traceback (most recent call last):
  File "test.py", line 6, in ?
    from new import box
ImportError: cannot import name box

Any idea ? 

Regards,
John



From danb_83 at yahoo.com  Mon May  2 00:02:04 2005
From: danb_83 at yahoo.com (Dan Bishop)
Date: 1 May 2005 21:02:04 -0700
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <zX%ce.78213$ft1.5056576@phobos.telenet-ops.be>
References: <d4u60o$akh$1@news2.netvision.net.il>
	<mailman.47.1114818531.14961.python-list@python.org>
	<1114924100.296223.114020@g14g2000cwa.googlegroups.com>
	<1114927892.321086.60190@z14g2000cwz.googlegroups.com>
	<zX%ce.78213$ft1.5056576@phobos.telenet-ops.be>
Message-ID: <1115006098.987811.171180@f14g2000cwb.googlegroups.com>


Roel Schroeven wrote:
> Dan Bishop wrote:
>
> > Dan Bishop wrote:
> >
> > Correction: Now I'm stuck on Level 11.  I think I'm supposed to do
> > something with the pixels in the image, but what?
>
> Me too. I've tried making different images out of the even and the
odd
> pixels, but nothing interesting happened. I tried to combine both
images
> in various ways (using the Gimp), but that also seemed to be a dead
end.

You only got 2 images?

*** SPOILER ALERT ***













Split them again to get 4 images with (even, even), (even, odd), (odd,
even), and (odd, odd) coordinates.  Two of the resulting images will be
useful.



From exarkun at divmod.com  Tue May 10 13:36:24 2005
From: exarkun at divmod.com (Jp Calderone)
Date: Tue, 10 May 2005 17:36:24 GMT
Subject: Put a file on an ftp server over ssl
In-Reply-To: <1115744132.371147.3240@o13g2000cwo.googlegroups.com>
Message-ID: <20050510173624.15422.1303964544.divmod.quotient.30495@ohm>

On 10 May 2005 09:55:32 -0700, Daniel Santa Cruz <dstcruz at gmail.com> wrote:
>Hello all!
>
>I have been troubled for the past couple of days trying to write a
>simple script that sends a file to an ftp server.  It used to be the
>easiest thing in the world, but now the server has changed to a ftps
>(ftp over ssl) server.  All of the sudden, the world has come to a
>crawling stop.
>
>Seems that M2Crypto would maybe do the trick, but I can't buy the thing
>(they won't pay for it).  Other than suggesting projects, does any one
>have actuall working code to do something like this?  My, it seems like
>it should be VERY simple, but it has become a nightmare.
>
>Oh do I wish...
>
>f = ftps.connect('username', 'password', port)
>ftps.put(localFilePath)
>
>Done!
>
>Thanks for any help!

  Twisted (<http://www.twistedmatrix.com>) has some rudamentary FTP support.  It also has SSL support.  It will probably take a little effort on your part to get them to work together, but I'm sure it will be easier than coming up with your own FTP implementation or kludging the standard library's ftp support into working.

  Jp

>
>Daniel
>
>--
>http://mail.python.org/mailman/listinfo/python-list
>


From Maniac at SoftwareManiacs.Org  Wed May  4 07:14:38 2005
From: Maniac at SoftwareManiacs.Org (Maniac)
Date: Wed, 04 May 2005 15:14:38 +0400
Subject: Problem with pyXML DOM
In-Reply-To: <d5aa59$gtr$03$1@news.t-online.com>
References: <d5aa59$gtr$03$1@news.t-online.com>
Message-ID: <4278AE9E.7060001@SoftwareManiacs.Org>

Florian Lindner wrote:

>Traceback (most recent call last):
>  File "ConfigReader.py", line 40, in ?
>    c = ConfigReader(f)
>  File "ConfigReader.py", line 32, in __init__
>    print sourceNode.getElementsByTagName("filename")[0].nodeValue()
>TypeError: 'NoneType' object is not callable
>  
>
This is because nodeValue here is 'None' and 'None()' doesn't make 
sense. Looks like you want the thing between <filename> and </filename>. 
This is not a nodeValue, this is nodeValue of firstChild of element 
'filename'. So this should work:

print sourceNode.getElementsByTagName("filename")[0].firstChild.nodeValue


From jstroud at mbi.ucla.edu  Wed May 11 20:22:29 2005
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Wed, 11 May 2005 17:22:29 -0700
Subject: Python Documentation (should be better?)
In-Reply-To: <4282977C.A6676CDF@pauahtun.org>
References: <5C99C308457E6D4EA5448EA52A66004A675A6E@or.mxim.com>
	<428276e8$0$318$626a14ce@news.free.fr>
	<4282977C.A6676CDF@pauahtun.org>
Message-ID: <200505111722.29549.jstroud@mbi.ucla.edu>

Ivan and Company:

Keep this in your favorites bar:

http://rgruet.free.fr/PQR24/PQR2.4.html

Under "Contents", click on "Basic types and their operations:...string"

But I think this could have an expanded "idioms" section.
I.E.
       for index,element in enumarate(alist):
or
       for atup in zip(list1,list2):
Maybe we could compile a list? Maybe under "Idioms (was Re: Python Documentation)"?

Anybody care to send in their favorites? I'll compile them.

James

On Wednesday 11 May 2005 04:38 pm, Ivan Van Laningham wrote:
> Hi All--
> [rant]

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From mefjr75 at hotmail.com  Sun May  1 18:45:35 2005
From: mefjr75 at hotmail.com (M.E.Farmer)
Date: 1 May 2005 15:45:35 -0700
Subject: sys.stdout question
In-Reply-To: <1114985939.702426.114490@f14g2000cwb.googlegroups.com>
References: <1114985939.702426.114490@f14g2000cwb.googlegroups.com>
Message-ID: <1114987535.889036.221150@f14g2000cwb.googlegroups.com>

Print is the culprit here. Note item 2.
>>> help('print')
  6.6 The print statement



  	print_stmt	  ::= 	 "print" ( [expression[1] ("," expression[2])*
[","]]
  	 	  	 | ">>" expression[3] [("," expression[4])+ [","]] )

  Download entire grammar as text.[5]

  print evaluates each expression in turn and writes the resulting
object
  to standard output (see below). If an object is not a string, it is
  first converted to a string using the rules for string conversions.
The
  (resulting or original) string is then written. A space is written
  before each object is (converted and) written, unless the output
system
  believes it is positioned at the beginning of a line. This is the
case
  (1) when no characters have yet been written to standard output, (2)
  when the last character written to standard output is "\n", or (3)
when
  the last write operation on standard output was not a print
statement.
  (In some cases it may be functional to write an empty string to
standard
  output for this reason.) Note: Objects which act like file objects
but
  which are not the built-in file objects often do not properly emulate
  this aspect of the file object's behavior, so it is best not to rely
on
  this.

  A "\n" character is written at the end, unless the print statement
ends
  with a comma. This is the only action if the statement contains just
the
  keyword print.

  Standard output is defined as the file object named stdout in the
  built-in module sys. If no such object exists, or if it does not have
a
  write() method, a RuntimeError exception is raised.

  print also has an extended form, defined by the second portion of the
  syntax described above. This form is sometimes referred to as ``print
  chevron.'' In this form, the first expression after the >> must
evaluate
  to a ``file-like'' object, specifically an object that has a write()
  method as described above. With this extended form, the subsequent
  expressions are printed to this file object. If the first expression
  evaluates to None, then sys.stdout is used as the file for output.

hth,
M.E.Farmer



From lbates at syscononline.com  Sun May  1 09:42:42 2005
From: lbates at syscononline.com (Larry Bates)
Date: Sun, 01 May 2005 08:42:42 -0500
Subject: Python interpreter in Basic or a Python-2-Basic translator.
In-Reply-To: <1114953507.031865.244920@g14g2000cwa.googlegroups.com>
References: <1114953507.031865.244920@g14g2000cwa.googlegroups.com>
Message-ID: <4274DCD2.8020003@syscononline.com>

I don't think this is going to happen.

Applications that drive MS Office applications merely call COM
objects that perform the actual operations.  It doesn't really
matter what language calls the COM objects, they are the same
objects all the time.  If they don't like the "installation"
of the Python interpreter, use py2exe to convert your app to
an .EXE file with some supporting .DLL files and use Inno
Installer to turn it all into a single setup.exe file that
can be distributed.  Then you can install on machines without
doing Python installation.

Otherwise, bite the bullet and just learn and write in VB/VBA.

-Larry Bates


Engineer wrote:
> I'm looking for a Python interpreter written in BASIC, preferably
> Visual Basic, and one written in VBA would be best of all.  An
> alternative would be a Python-2-Basic compiler.
> 
> Unfortunately I have to develop some special purpose code in an
> organization where my only development environment is Microsoft Office
> Visual Basic for Applications.
> 
> The security 'droids have decided that since the MS Office Suite is a
> "standard" application then software written in MS Office VBA must be
> "safe."  Any other development environments (such as Java, Perl,
> Cygwin) are "unsafe" and can't be installed.
> 
> The result is that any software I write must be bootstrapped from MS
> Office VBA.
> 
> So, if I want Python, I need a Python interpreter in VBA.
> 
> If you respond, please send a copy to pcolsen at comcast.net
> 


From nemtos at altern.org  Sun May  8 20:56:55 2005
From: nemtos at altern.org (Nemtos)
Date: Sun, 08 May 2005 20:56:55 -0400
Subject: undefined symbol?
Message-ID: <427EB557.6050902@altern.org>

Hi,

I upgraded my laptop from RH9 to Fedora 3 yesterday. It seems to have a 
problem with an undefined symbol in Python. Specifically, if I try to run 
system-config-packages, I get the following error:

Unable to import gtk module.  This may be due to running without
$DISPLAY set.  Exception was:
/usr/lib/python2.3/site-packages/gtk-2.0/gtk/_gtk.so: undefined symbol:
gtk_font_button_set_show_style

I get similar errors running other system-config-* applications.

I have python 2.3.4-13.1, pygtk2-2.4.0-1 and gtk2-2.4.14-3.fc3. Still the 
error message above refers to a library in the Python sub-directory named 
gtk-2.0: could that be the problem? What am I missing here?
(Note that DISPLAY is correctly set to :0.0)

hint/help/solution would be greatly appreciated.
Thanks
Nemtos




From garyjohn at spk.agilent.com  Thu May 26 16:19:27 2005
From: garyjohn at spk.agilent.com (Gary Johnson)
Date: Thu, 26 May 2005 20:19:27 +0000 (UTC)
Subject: vim configuration for python
References: <d73255$e8b$1@nntp1.jpl.nasa.gov>
	<1117089208.241431@cswreg.cos.agilent.com>
	<1117120930.900628.149250@g14g2000cwa.googlegroups.com>
Message-ID: <1117138766.834635@cswreg.cos.agilent.com>

In comp.editors DJK <dkertis at gmail.com> wrote:
> Does anybody know of any scripts to check python syntax when you type
> :make?

The problem I had doing this with Python was that the Python 
interpreter spits out errors in the opposite order from that in 
which I wanted to traverse them in vim's quickfix error list.  I 
wrote the following compiler file and helper script to work around 
this.  I don't use Python very often and haven't used in it a while, 
so this still isn't very polished, but you might find it useful 
anyway.  Note also that I did this on a Unix system.

------------------------- compiler/python.vim --------------------------
" Vim compiler file
" Compiler:	Python
" Maintainer:	Gary Johnson <garyjohn at spk.agilent.com>
" Last Change:	2002-06-26 00:27:56

if exists("current_compiler")
    finish
endif
let current_compiler = "python"

setlocal makeprg=python\ %
setlocal shellpipe=2>&1\ \|\ ~/.vim/tools/efm_filter.py\ \|\ tee
" Note:  efm_filter.py could be rewritten to send its input to stdout
" and to write its output to the file given on the command line.  This
" way the user could see the familiar output from Python while the
" quickfix error file received the format the vim can understand.  E.g.,
"
"     setlocal shellpipe=2>&1\ \|\ ~/.vim/tools/efm_filter.py
"
" or
"
"     setlocal shellpipe=2>&1\ \|\ tee\ /dev/tty\ \|\ ~/.vim/tools/efm_filter.py

setlocal errorformat=\ \ File\ \"%f\"\\,\ line\ %l\\,\ in\ %*[^\\,]\\,\ %m
------------------------------------------------------------------------

------------------------- tools/efm_filter.py --------------------------
#!/usr/bin/env python

import sys
import string

errors = sys.stdin.readlines()

message = errors.pop()[:-1]
errors.reverse()

for error in errors:
    if string.find(error, '  File') == 0:
	print error[:-1] + ", " + message
	message = "Traceback"
------------------------------------------------------------------------

To use these, put them in the indicated directories under ~/.vim and 
execute ":compiler python".  Also see ":help compiler".

HTH,
Gary


From rupole at hotmail.com  Mon May 16 17:45:44 2005
From: rupole at hotmail.com (Roger Upole)
Date: Mon, 16 May 2005 17:45:44 -0400
Subject: Problem listing services with wmi
References: <mailman.59.1116271963.8733.python-list@python.org>
Message-ID: <42891567$1_1@spool9-west.superfeed.net>

The only thing I could find for the hresult is that it corresponds to
wbemErrCriticalError.  According to this page
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/wmisdk/wmi/wbemerrorenum.asp
it's some kind of internal error.

        Roger


"Jean-S?bastien Guay" <jean_seb at videotron.ca> wrote in message 
news:mailman.59.1116271963.8733.python-list at python.org...
> Hello,
>
> I'm pretty new to Python, though I have a fair bit of experience with 
> C/C++, Java, Perl, PHP and others.
>
> I installed Tim Golden's wmi module 
> (http://tgolden.sc.sabren.com/python/wmi.html), in the hopes it would help 
> me list and work with services on my Win32 machine. Now, everything seems 
> fine except for one thing : Listing services!
>
> I tried running a couple of the examples on Tim's more examples page in 
> the python shell (for example, List all running processes, Show the 
> percentage free space for each fixed disk, Show the IP and MAC addresses 
> for IP-enabled network interfaces, etc.) and they worked fine. But when I 
> try to run the first example which is on the first page above, I get an 
> error. The code is :
>
> import wmi
>
> c = wmi.WMI ()
> for s in c.Win32_Service ():
>  if s.State == 'Stopped':
>    print s.Caption, s.State
>
>
> and I get :
>
> Traceback (most recent call last):
>  File "<stdin>", line 1, in ?
>  File "G:\Python-2.4\Lib\site-packages\wmi.py", line 404, in __call__
>    return self.wmi.query (wql)
>  File "G:\Python-2.4\Lib\site-packages\wmi.py", line 583, in query
>    raise WMI_EXCEPTIONS.get (hresult, x_wmi (hresult))
> wmi.x_wmi: -2147217398
>
> (the exception seems to be thrown on the "for s in..." line)
> I have only found one discussion in this newsgroup's archives that seems 
> to talk about this problem 
> (http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/19fa91ea1a1ff160/0364b7cd22d73483?q=WMI_EXCEPTIONS&rnum=1#0364b7cd22d73483) 
> and the fix they suggest there (calling pythoncom.CoInitialize () before 
> instantiating the WMI object) doesn't seem to work in this case. In other 
> words, this code :
>
> import wmi
> import pythoncom
>
> pythoncom.CoInitialize ()
> c = wmi.WMI ()
> for s in c.Win32_Service ():
>  if s.State == 'Stopped':
>    print s.Caption, s.State
>
> gives me the same result as above.
>
> Could someone please point me in the right direction to find out what's 
> wrong?
>
> Thanks in advance,
>
> J-S
>
> -- 
> ___________________________________________
> Jean-S?bastien Guay   jean_seb at videotron.ca
>             http://whitestar02.webhop.org/
> 




----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! >100,000 Newsgroups
---= East/West-Coast Server Farms - Total Privacy via Encryption =---


From fraca7 at free.fr  Mon May 30 17:40:05 2005
From: fraca7 at free.fr (Fraca7)
Date: Mon, 30 May 2005 23:40:05 +0200
Subject: Case Sensitive, Multiline Comments
References: <1117137316.140791.210430@g14g2000cwa.googlegroups.com>
	<z5adnQMsOLiL7AffRVn-hQ@comcast.com>
	<mailman.256.1117477669.18027.python-list@python.org>
	<d7fpbl$b1s$1@wake.carmen.se>
	<mailman.261.1117484784.18027.python-list@python.org>
	<W5Lme.105911$Wl2.6373476@phobos.telenet-ops.be>
Message-ID: <pan.2005.05.30.21.40.05.432948@free.fr>

On Mon, 30 May 2005 20:56:22 +0000, Roel Schroeven wrote:

> You haven't looked very well though: there are actually quite a lot of 
> extra spaces. Still, it's nicely done indeed.

C-u M-q ?



From ruach at chpc.utah.edu  Mon May 16 14:03:08 2005
From: ruach at chpc.utah.edu (Matthew Thorley)
Date: Mon, 16 May 2005 12:03:08 -0600
Subject: ElemenTree and namespaces
Message-ID: <d6an8t$554$1@vegh.ks.cc.utah.edu>

Does any one know if there a way to force the ElementTree module to
print out name spaces 'correctly' rather than as ns0, ns1 etc? Or is
there at least away to force it to include the correct name spaces in
the output of tostring?

I didn't see anything in the api docs or the list archive, but before I
set off to do it myself I thought I should ask, because it seemed like
the kind of thing that has already been done.

thanks


From steve at holdenweb.com  Tue May 31 12:06:44 2005
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 31 May 2005 12:06:44 -0400
Subject: The need to put "self" in every method
In-Reply-To: <1117554344.938440.54700@g14g2000cwa.googlegroups.com>
References: <1117554344.938440.54700@g14g2000cwa.googlegroups.com>
Message-ID: <d7i1st$8j4$1@sea.gmane.org>

Fernando M. wrote:
> Hi,
> 
> i was just wondering about the need to put "self" as the first
> parameter in every method a class has because, if it's always needed,
> why the obligation to write it? couldn't it be implicit?
> 
> Or is it a special reason for this being this way?
> 
> Thanks.
> 
The reason can be found in the output from the python statement "import 
this". Explicit is better than implicit.

regards
  Steve
-- 
Steve Holden        +1 703 861 4237  +1 800 494 3119
Holden Web LLC             http://www.holdenweb.com/
Python Web Programming  http://pydish.holdenweb.com/



From steve at holdenweb.com  Sun May 15 22:14:56 2005
From: steve at holdenweb.com (Steve Holden)
Date: Sun, 15 May 2005 22:14:56 -0400
Subject: [Docutils-develop] Re: Have you tried eric3 ?
In-Reply-To: <d64qc4$2cn$1@sea.gmane.org>
References: <200505141008.00398.nicolas.girard@nerim.net>
	<d64qc4$2cn$1@sea.gmane.org>
Message-ID: <42880220.5000707@holdenweb.com>

Nicola Larosa wrote:
>>I've recently discovered Eric3, a development environment dedicated to python, 
>>and I'm really impressed ! Up to now I'd been using kdevelop for my projects 
>>involving python but I always felt unsatisfied with it.
>>...
>>Let me know your thoughts about this nice app !
>>
>>Web page: http://www.die-offenbachs.de/detlev/eric3.html
>>Screenshots: http://www.die-offenbachs.de/detlev/eric3-screenshots.html
> 
> 
> I've been using Eric3 for quite a while now. I tried it years ago, but it
> did only supported .py files in the project, and that was not enough.
> 
> Then I used Leo, not your run-of-the-mill IDE, but a very capable outliner
> meant for literate programming, implemented with Python and Tkinter. It too
> had a few idiosyncrasies, so I tried Eric3 again, that in the meanwhile had
> gotten support for .ptl files. It was enough for me, so I switched.
> 
> Eric3 is a more traditional, quite featureful IDE, and its Python
> implementation is very clean. I was able to fix a couple minor problems,
> and the patches were accepted into the source, much to my rejoicing.
> 
> Recently I resumed using Leo, but for other stuff. For Python programming I
> am sticking to Eric3. I have not gotten around to use its featureful
> support for version control, still using the command line for that, and the
> wonderful Meld for porting between trunk and branches.
> 
> A suggestion: the View menu has two very useful folding commands, "Toggle
> all folds" and "Toggle current fold". They are much more usable with
> keyboard shortcuts, so define them. I use Alt+A and Alt+C.
> 
> A third command would be useful, to open only the first level folds (to
> open all classes but keep the method closed), but it looks like the
> underlying Scintilla editor does not support this. (In Leo you can
> instantly open the outline at one of ten different nesting level.)
> 
If you haven't tried Wing IDE I'd encourage you to take a look. I've 
tried most debugging packages, and Wing is to my mind the most usable.

Further, they have a liberal policy with regard to open source projects, 
making the cost extremely reasonable if you aren't using the software 
for commercial development but do use it to develop and support open 
source works.

regards
  Steve
-- 
Steve Holden        +1 703 861 4237  +1 800 494 3119
Holden Web LLC             http://www.holdenweb.com/
Python Web Programming  http://pydish.holdenweb.com/


From sjmachin at lexicon.net  Thu May 26 05:28:16 2005
From: sjmachin at lexicon.net (John Machin)
Date: Thu, 26 May 2005 19:28:16 +1000
Subject: Strange Execution Times
In-Reply-To: <1117088059.588457.200270@z14g2000cwz.googlegroups.com>
References: <1117088059.588457.200270@z14g2000cwz.googlegroups.com>
Message-ID: <429596B0.8010804@lexicon.net>

curi42 at gmail.com wrote:
> I am running two functions in a row that do the same thing.

1. I see no functions here.

You should set out a script like this:

def main():
     your_code_goes_here()

if __name__ == '__main__':
     main()

for two reasons (a) your code will be referring to locals instead of 
globals; this is faster, which might appeal to you (b) if somebody 
accidentally imports the script, nothing happens.

2. The two loops to which you refer do *not* do the same thing; see later.

> One runs
> in .14 seconds, the other 56.  I'm confused.  I wrote another version
> of the program and couldn't get the slow behavior again, only the fast.
>  I'm not sure what is causing it.  Can anyone figure it out?
> 
> Here is my code (sorry it's a bit of a mess, but my cleaned up version
> isn't slow!).  Just skim to the bottom where the timing is.  The first
> time printed out is .14, the seond is 56.56.
> 
> 

[snip]


[following has extraneous blank lines and comments removed]
> t1 = time.clock()
> for j in r:
>     digest = m(jo(s[starts[j]+1:ends[j]])).hexdigest()
>     a[starts[j]+1:ends[j]] = digest
> t2 = time.clock()
> print "time is", round(t2-t1, 5)
> 
> t1 = time.clock()
> for i in r:
>     data[starts[i]:ends[i]] = \
>         md5(join(s[starts[i]:ends[i]])).hexdigest()
> t2 = time.clock()
> print "second time is", round(t2-t1, 5)

General questions: what platform? what version of Python? how large is 
the file? how much free memory do you have? how many passwords are 
there? what is the average length of a password?

Ignoring the superficial-but-meaningless differences (i vs j, md5 
[aarrgghh!!] vs m), jo vs join), these two loops differ in the following 
respects:

(1) 'data' is a copy of 'a'
(2) the first loop's body is effectively: digest = RHS; LHS = digest 
whereas the 2nd loop's body is: LHS = RHS
(3) the first loop uses starts[j]+1 whereas the second loop uses starts[j]

Item (1) may affect the timing if file is large compared with available 
memory -- could be 'a' has to be swapped out, and 'data' swapped in.

Item (2) should make the 2nd loop very slightly faster, so we'll ignore 
that :-)

Item (3) means you are not comparing like with like. It means that the 
1st loop has less work to do. So this could make an observable 
difference for very short passwords -- but still nothing like 0.14 
compared with 56.

So, some more questions:

The 56.56 is suspiciously precise -- you ran it a few times and it 
printed exactly 56.56 each time?

Did you try putting the 2nd loop first [refer to Item (1) above]?
Did you try putting in a switch so that your script runs either 1st loop 
or 2nd loop but not both? Note that each loop is making its target list 
expand in situ; this may after a while (like inside loop 2) cause the 
memory arena to become so fragmented that swapping will occur. This of 
course can vary wildly depending on the platform; Win95 used to be the 
most usual suspect but you're obviously not running on that.

Some observations:

(1) 's' is already a string, so ''.join(s[x:y]) is a slow way of doing 
s[x:y]

(2) 'a' ends up as a list of one-byte strings, via a very circuitous 
process: a = array.array('c', s).tolist()

A shorter route would be: a = list(s)

However what's wrong with what you presumably tried out first i.e. a = 
array.array('c', s) ?? It doesn't need the final ''.join() before 
writing to disk, and it takes up less memory. NOTE: the array variety 
takes up 1 byte per character. The list variety takes up at least 4 
bytes per character (on a machine where sizeof(PyObject *) == 4); to the 
extent that the file contains characters that are not interned (i.e. not 
   [A-Za-z_] AFAIK), much more memory is required as a separate object 
will be created for each such character. Was it consistently slower?

(3) If memory is your problem, you could rewrite the whole thing to 
simply do one write per password; that way you only need 1.x copy of the 
   file contents in memory, not 2.x.

Hoping some of this helps,
John


From qwweeeit at yahoo.it  Fri May 13 10:04:20 2005
From: qwweeeit at yahoo.it (qwweeeit at yahoo.it)
Date: 13 May 2005 07:04:20 -0700
Subject: Importing modules
In-Reply-To: <mailman.492.1115923363.29826.python-list@python.org>
References: <1115816747.292060.292200@o13g2000cwo.googlegroups.com>
	<1115909950.205983.224430@o13g2000cwo.googlegroups.com>
	<mailman.492.1115923363.29826.python-list@python.org>
Message-ID: <1115991597.262039.194810@g14g2000cwa.googlegroups.com>

Hi Fredrik,
thank you very much for your articles (especially that on
import-confusion). At last I grasped, also if not thorougly, the import
mechanism. What cleared my doubts was your recursive import paragraph.
In the Guido's "Python Reference Manual" he says:
"Import statements are executed in two steps: (1) find a module , and
initialize it if necessary..."
...almost like it was not necessary to go through it executing it (and
initializing the classes if necessary).
I made a small script to be sure and (...of course) confirmed what you
said...
I have still some doubts on the namespaces and functions/variables
visibility, but for that there is the error mechanism...
Bye.



From fredrik at pythonware.com  Fri May  6 02:44:53 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Fri, 6 May 2005 08:44:53 +0200
Subject: annonymous functions -- how to
References: <1115239458.776800.240080@g14g2000cwa.googlegroups.com><d5bdip$bpp$05$2@news.t-online.com><42795acb.685370470@news.oz.net><1115264804.625020.203800@f14g2000cwb.googlegroups.com><YuWdnVUxIKrdmuffRVn-oA@powergate.ca>
	<TPree.10739$fI.442@fed1read05>
Message-ID: <d5f6tu$ep0$3@sea.gmane.org>

Dave Benjamin wrote:

> In this case, having to name these callback functions is tiring and
> awkward, and (IMHO) disrupts the flow of my function:

so name them all "func" or "next" or something, so you don't have
to think.  once the object is bound, the name is irrlevant.

> def add_thingy():
>      def next_thingy_id_func(thingy_id):
>          print 'got thingy id:', thingy_id
>          def next_doodad_id_func(doodad_id):
>              print 'got doodad id:', doodad_id
>              def new_thingy_doodad_func(thingy_doodad):
>                  print 'thingy doodad created, froobling...'
>                  frooble(thingy_doodad)
>                  print 'froobling complete'
>              with_new_thingy_doodad(thingy_id, doodad_id,
>                                     new_thingy_doodad_func)
>          with_next_doodad_id(next_doodad_id_func)
>      with_next_thingy_id(next_thingy_id_func)

there's also:

    def add_thingy(self):

        yield get_new_thingy_id; thingy_id = self.result

        print 'got thingy id:', thingy_id

        yield get_new_doodad_id; doodad_id = self.result

        print 'got doodad id:', doodad_id

        yield get_new_thingy_doodad; thingy_doodad = self.result

        print 'thingy doodad created, froobling...'
        frooble(thingy_doodad)
        print 'froobling complete'

</F>





From roy at panix.com  Sun May 15 13:41:07 2005
From: roy at panix.com (Roy Smith)
Date: Sun, 15 May 2005 13:41:07 -0400
Subject: string.lstrip stripping too much?
References: <mailman.26.1116176368.15315.python-list@python.org>
Message-ID: <roy-067EC1.13410715052005@reader1.panix.com>

"joram gemma" <joram.gemma at pandora.be> wrote:

> Hello,
> 
> on windows python 2.4.1 I have the following problem
> 
> >>> s = 'D:\\music\\D\\Daniel Lanois\\For the beauty of Wynona'
> >>> print s
> D:\music\D\Daniel Lanois\For the beauty of Wynona
> >>> t = 'D:\\music\\D\\'
> >>> print t
> D:\music\D\
> >>> s.lstrip(t)
> 'aniel Lanois\\For the beauty of Wynona'
> >>> 
> 
> why does lstrip strip the D of Daniel Lanois also?

Because the argument to lstrip is a *set of characters* to delete, not a 
string to delete.  The string you passed it contained a 'D', so the 'D' got 
stripped.  Imagine lstrip was defined something like:

def lstrip (self, chars):
   temp = self
   while temp[0] in chars:
      temp = temp[1:]
   return temp

and you should get the idea.  I don't think the documentation for lstrip 
really makes this clear.  I'm going to open a bug on the doc, and see what 
happens :-)

I suspect what you really want to be doing is using the os.path module.  
It's got functions for tearing pathnames apart into components, and hides 
all the uglyness like whether / or \ is the directory separator on your 
particular system.


From a at b.c  Thu May  5 11:12:11 2005
From: a at b.c (D H)
Date: Thu, 05 May 2005 10:12:11 -0500
Subject: annonymous functions -- how to
In-Reply-To: <YuWdnVUxIKrdmuffRVn-oA@powergate.ca>
References: <1115239458.776800.240080@g14g2000cwa.googlegroups.com>
	<d5bdip$bpp$05$2@news.t-online.com>
	<42795acb.685370470@news.oz.net>
	<1115264804.625020.203800@f14g2000cwb.googlegroups.com>
	<YuWdnVUxIKrdmuffRVn-oA@powergate.ca>
Message-ID: <Av-dnbd5u_QiquffRVn-vQ@comcast.com>

Peter Hansen wrote:
> Jason Mobarak wrote:
> 
>> What's wrong with:
>>
>> def blah():
>>   def _ (a, b, c):
>>     a = a + 2
>>     print "stmt 2"
>>     return a+b/c
>>   return doSomethingWith(_)
>>
>> It's basically "anonymous", it just uses a name that you don't care
>> about. AFAIK, it can be immediately clobbered later if need be.
>> Otherwise, the function shouldn't be anonymous.
> 
> 
> Or even better:

Python doesn't have anonymous functions.
See http://boo.codehaus.org/Closures
and the closures examples here:
http://svn.boo.codehaus.org/trunk/tests/testcases/integration/


From egbert.bouwman at hccnet.nl  Mon May 30 05:35:14 2005
From: egbert.bouwman at hccnet.nl (egbert)
Date: Mon, 30 May 2005 11:35:14 +0200
Subject: [OT] SQL-records and OOP
Message-ID: <20050530093514.GA3695@hccnet.nl>

Each row of an sql table may be the data_part_in_spe  
of some class_instance.
I try to think about, and am looking for, the do's and don'ts 
and caveat's and the right way of thinking about this transformation.
For me it is new territory.

For instance, my sql-query produces much more rows than I am 
interested in eventually. So I have to narrow this collection.

I can inspect the data while it is still a list of rows,
and make instances of only the rows I really need.
Or I may create an aggregate of full-blown instances derived
from all the selected rows.

I suppose Google has lots to offer, but I must be looking 
in the wrong direction.

egbert
-- 
Egbert Bouwman - Keizersgracht 197 II - 1016 DS  Amsterdam - 020 6257991
========================================================================


From pinard at iro.umontreal.ca  Sat May  7 08:01:09 2005
From: pinard at iro.umontreal.ca (=?iso-8859-1?Q?Fran=E7ois?= Pinard)
Date: Sat, 7 May 2005 08:01:09 -0400
Subject: Q: The `print' statement over Unicode
In-Reply-To: <acnbm18i.fsf@python.net>
References: <mailman.6.1115221576.29826.python-list@python.org>
	<acnbm18i.fsf@python.net>
Message-ID: <20050507120109.GA6751@phenix.progiciels-bpi.ca>

[Thomas Heller]
> Fran?ois Pinard <pinard at iro.umontreal.ca> writes:

> > [...] given file `question.py' with this contents:

> >    # -*- coding: UTF-8 -*-
> >    texte = unicode("Fran\xe7ois", 'latin1')
> >    print type(texte), repr(texte), texte
> >    print type(texte), repr(texte), str(texte)

> > doing `python question.py' yields:

> >    <type 'unicode'> u'Fran\xe7ois' Fran?ois
> >    <type 'unicode'> u'Fran\xe7ois'
> >    Traceback (most recent call last):
> >      File "question.py", line 4, in ?
> >        print type(texte), repr(texte), str(texte)
> >    UnicodeEncodeError: 'ascii' codec can't encode character u'\xe7' \
> >       in position 4: ordinal not in range(128)

> > [...] why is the first `print' working over its third argument, but
> > not the second?  How does `print' convert that Unicode string to a
> > 8-bit string for output, if not through `str()'?  What is missing to
> > the documentation, or to my way of understanding it?

> AFAIK, print uses sys.stdout.encoding to encode the unicode string.

Much thanks for this information.

I was not aware of this file attribute.  Looking around, I found a
quick description in the Library Reference, under "2.3.8 File Objects".
However, I did not find in the documentation the rules stating how
or when this attribute receives a value, and in particular here, for
the case of `sys.stdout'.  The Reference Manual, under "6.6 The print
statement", is silent about how Unicode strings are handled.

Am I looking in the wrong places, or else, should not the standard
documentation more handily explain such things?

-- 
Fran?ois Pinard   http://pinard.progiciels-bpi.ca


From jrastrick at student.usyd.edu.au  Mon May 16 11:13:08 2005
From: jrastrick at student.usyd.edu.au (Jordan Rastrick)
Date: 16 May 2005 08:13:08 -0700
Subject: Is isinstance always "considered harmful"?
In-Reply-To: <csNhe.5334$Cz3.675850@monger.newsread.com>
References: <1116157672.683839.49700@o13g2000cwo.googlegroups.com>
	<csNhe.5334$Cz3.675850@monger.newsread.com>
Message-ID: <1116256388.885951.255640@f14g2000cwb.googlegroups.com>


Leif K-Brooks wrote:

> Regardless of the various issues surrounding isinstance(), you have a
> difference in functionality. Since you're just storing a reference in
> the case of another LinkedList instead of copying it, mutating the
> LinkedList will be different from mutating another iterable type
which
> has been passed to extend:

Oops, didn't think of that. Good point.

> >>> linkedlist1 = LinkedList()
> >>> list1 = [1, 2, 3]
> >>> linkedlist2 = LinkedList([4, 5, 6])
> >>> linkedlist1.extend(list1)
> >>> linkedlist1.extend(linkedlist2)
> >>> linkedlist1
> LinkedList([1, 2, 3, 4, 5, 6])
> >>> list1.append(4)
> >>> linkedlist1 # Notice how there's still only one 4
> LinkedList([1, 2, 3, 4, 5, 6])
> >>> linkedlist2.append(7)
> >>> linkedlist1 # Notice how there's now a 7
> LinkedList([1, 2, 3, 4, 5, 6, 7])

Out of curiousity, is this code real? Where does the LinkedList() class
come from?



From tim.peters at gmail.com  Mon May  9 13:51:53 2005
From: tim.peters at gmail.com (Tim Peters)
Date: Mon, 9 May 2005 13:51:53 -0400
Subject: Inverse confusion about floating point precision
In-Reply-To: <17023.40956.917027.8804@montanaro.dyndns.org>
References: <17023.40956.917027.8804@montanaro.dyndns.org>
Message-ID: <1f7befae050509105167aee2bd@mail.gmail.com>

[Skip Montanaro]
> I understand why the repr() of float("95.895") is "95.894999999999996".
> What I don't understand is why if I multiply the best approximation to
> 95.895 that the machine has by 10000 I magically seem to get the lost
> precision back.  To wit:
>
>    % python
>    Python 2.3.4 (#12, Jul  2 2004, 09:48:10)
>    [GCC 3.3.2] on sunos5
>    Type "help", "copyright", "credits" or "license" for more information.
>    >>> 95.895
>    95.894999999999996
>    >>> 95.895 * 10000
>    958950.0
>
> Why isn't the last result "958949.99999999996"?

Because it's *still* not decimal arithmetic.  You have 53 significant
bits in the approximation to 95.895, and "958949.99999999996" is
itself a decimal approximation to the exact binary value stored (read
the Tutorial appendix on fp issues for more on that).

There are 14 significant bits in 10000.  The product thus has 53+14 =
67, or 53+14-1 = 66, significant bits, and has to be rounded to fit
back into 53 significant bits.  None of that happens in base 10.

> IOW, how'd I get back the lost bits?

It happened to round up.  Here's a simpler example, where it happens
to round down instead:

>>> .1
0.10000000000000001
>>> .1 * 10
1.0


From grante at visi.com  Thu May 12 11:34:39 2005
From: grante at visi.com (Grant Edwards)
Date: Thu, 12 May 2005 15:34:39 -0000
Subject: Launch file in Notepad
References: <42835db6$0$1334$5fc3050@dreader2.news.tiscali.nl>
	<mailman.462.1115906101.29826.python-list@python.org>
	<1186phdog83fmf6@corp.supernews.com>
	<42836e72.1345761282@news.oz.net>
Message-ID: <1186tsftfofdsa1@corp.supernews.com>

On 2005-05-12, Bengt Richter <bokr at oz.net> wrote:

>>> There are several ways, but the preferred solution is to switch the 
>>> slash direction: "c:/test.txt". Python's smart enough to notice its 
>>> running on Windows and do the right thing with the slash.
>>
>>Does Python really look at the string and mess with the slash?
>>I don't think it needs to, since the Windows system calls have
>>always accepted forward slashses, haven't they?
>
> For a path parameter, I think so. But various command shells us '/' the
> way unix uses '-' -- i.e., for options/switches. E.g.

You're right.  It's the applications that choke on the forward
slash.  Back in the bad old days there was a way to tell DOS to
use '-' for the switch character, but not all apps paid
attention to the setting.

> I don't know why MS used backslashes when unix had a perfectly
> good path syntax (not to mention drive letter idiocy). Maybe
> some legal idiocy, wanting to be different to be safe from SCO
> types?

I think the use of forward slashes for command line switches
was adopted by CP/M from DEC's OSes (e.g. RSX-11).  CP/M didn't
have directories in the beginning, so nobody worried about what
to use for path separators (DEC used colons, IIRC).  DOS was a
straight-up ripoff of CP/M and kept '/' as the option
character.  Later when directories were added to DOS, they
picked '\' as the path seperator becuase '/' was the default
switch caracter.  The C-language "system calls" always accepted
either, but they may have been translating forward to backward
before making the DOS call calls.

-- 
Grant Edwards                   grante             Yow!  .. If I had heart
                                  at               failure right now,
                               visi.com            I couldn't be a more
                                                   fortunate man!!


From tim.golden at viacom-outdoor.co.uk  Tue May 24 10:36:58 2005
From: tim.golden at viacom-outdoor.co.uk (Tim Golden)
Date: Tue, 24 May 2005 15:36:58 +0100
Subject: py2exe for WMI
Message-ID: <9A28C052FF32734DACB0A288A3533991EBB84C@vogbs009.gb.vo.local>

| Hello All.
|   I'm trying to 'compile-to-EXE' a python program which uses 
| Win32 & WMI to
| pull system info. from the PC such as serial number, CPU 
| speed, etc.  I'm
| having problems with py2exe -- with regard to Win2000 & WinXP 
| platforms.  It
| seems that the program only works if I have one typelib for 
| WinXP and a
| slightly different one for Win2000.  Here is my relevent 
| section from the
| py2exe setup.py:

[... snipped ...]

| Can anyone tell me how I might make one unified py2exe 
| setup.py that'll
| 'compile' for both Win2000 & WinXP?
| 
| If not, can someone give me a hint as to how I can have a 
| python 'launcher'
| which can determine the difference between Win2000 & WinXP?  Using the
| sys.platform, they both show as Win32.
| 
| Thanks!
| Dave

There was a thread about this on the python-win32 list a 
while back. I think this is the start of the the thread
(altho' it's a bit confusing). The conclusion seems to
be that there's no conclusion. Maybe there's more info
on the py2exe list/wiki?

http://aspn.activestate.com/ASPN/Mail/Message/Python-win32/2007557

As to the other question (which platform am I on) there
was also a thread about this recently:

http://groups-beta.google.com/group/comp.lang.python/browse_frm/thread/b87d5de8f91c8e9c?tvc=1&q=platform+&hl=en

which, in short, says: use the platform module

TJG

________________________________________________________________________
This e-mail has been scanned for all viruses by Star. The
service is powered by MessageLabs. For more information on a proactive
anti-virus service working around the clock, around the globe, visit:
http://www.star.net.uk
________________________________________________________________________


From tjreedy at udel.edu  Fri May  6 22:46:04 2005
From: tjreedy at udel.edu (Terry Reedy)
Date: Fri, 6 May 2005 22:46:04 -0400
Subject: how  to make  a LAN game using python?
References: <d5h5jv$hnd$1@news.yaako.com>
Message-ID: <d5h9oc$1vg$1@sea.gmane.org>


"flyaflya" <flyaflya at gmail.com> wrote in message 
news:d5h5jv$hnd$1 at news.yaako.com...
>I want make a desktop game suports LAN connect, but pygame has nothing
> about network.How to let pygame suport LAN connect? have you some
> examples or articles about LAN connect?

The discussions on the pygame mailing list (gatewayed to 
gmane.comp.python.games) include networking with pygame issues.  There were 
recent threads about pygame and twisted.  See if you can explore the 
archives a bit.

Terry J. Reedy







From fredrik at pythonware.com  Fri May 13 03:04:33 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Fri, 13 May 2005 09:04:33 +0200
Subject: Python features
References: <1115536911.106882.166230@z14g2000cwz.googlegroups.com><mailman.162.1115539371.29826.python-list@python.org><op.sqofc51np2c5o9@hector.domek>
	<pan.2005.05.13.02.30.39.160177@dalkescientific.com>
Message-ID: <d61j37$ahe$1@sea.gmane.org>

Andrew Dalke wrote:

> Peter Dembinski wrote:
>> If you want to redirect me to Google, don't bother.  IMO ninety percent
>> of writings found on WWW is just a garbage.
>
> Sturgeon's law: Ninety percent of everything is crap.

does that apply to sturgeon's law itself?

(fwiw, this is of course why google displays 10 results on the
first page. according to the law, one of them is always exactly
what you want).

</F> 





From aljosa.mohorovic at gmail.com  Wed May  4 01:43:02 2005
From: aljosa.mohorovic at gmail.com (aljosa)
Date: 3 May 2005 22:43:02 -0700
Subject: file parsing/watching + qt
Message-ID: <1115185382.052344.115030@g14g2000cwa.googlegroups.com>

this is a Qt app. app should watch for changes in /var/log/isdn.log and
on file change (like new line was added to isdn.log) it should activate
event in my app.

i'm trying to fetch last line in file whenever isdnlog logs something
so that i can parse that line for a number and store it somewhere else,
is there a standard solution for this?

i'm using python2.3 on linux with PyQt3.


Aljosa



From pdemb at gazeta.pl  Fri May 13 07:39:26 2005
From: pdemb at gazeta.pl (Peter Dembinski)
Date: Fri, 13 May 2005 13:39:26 +0200
Subject: function with variable arguments
References: <1115977954.266898.141150@g49g2000cwa.googlegroups.com>
Message-ID: <op.sqppb0d8p2c5o9@hector.domek>

On Fri, 13 May 2005 11:52:34 +0200, Xah Lee <xah at xahlee.org> wrote:

> i wanted to define a function where the number of argument matters.
> Example:
>
> def Range(n):
>     return range(n+1)
>
> def Range(n,m):
>     return range(n,m+1)
>
> def Range(n,m,step):
>     return range(n,m+1,step)
>
> this obvious doesn't work. The default argument like
> Range(n=1,m,step=1) obviously isn't a solution.
>
> can this be done in Python?
>
> or, must the args be changed to a list?

It can be written this way:

   def Range_3args(n, m, step):
       return range(n, m + 1, step)

   def Range_2args(n, m):
       return range(n, m + 1)

   def Range(n, m = None, step = None):
       if (m is None) and (step is None):
           return range(n + 1)

       if (not (m is None)) and (step is None):
           return Range_2args(n, m)

       if (not (m is None)) and (not (step is None)):
           return Return_3args(n, m, step)

       return []


-- 
http://www.peter.dembinski.prv.pl


From olivier.elbaz at gmail.com  Tue May  3 13:46:17 2005
From: olivier.elbaz at gmail.com (Olivier Elbaz)
Date: Tue, 3 May 2005 19:46:17 +0200
Subject: How to read an integer value from a binary file?
Message-ID: <db5ab7e30505031046610bca75@mail.gmail.com>

Hi,

I read a bmp file (binary file) and I want to extract an integer value
from it (size value).
The whole binary file is read inside a list "all_bmp_file".
I can read the "size" value with the following code:
for r in all_bmp_file[2:5]:
   n = struct.unpack('B',r)#B for unsigned char
   print n
Result:
(182,)
(47,)
(0,)
The problem is that I would like to read the 4 bytes (integer) as one
number like:
struct.unpack('i','\xb6/\x00\x00')
Result
(12214,)
Note that I can't use  struct.unpack('i',all_bmp_file[2:5]) inside my
program since I got a syntax error.

Could you help me to find a solution?
Thanks,
Olivier


From bokr at oz.net  Sat May  7 15:50:50 2005
From: bokr at oz.net (Bengt Richter)
Date: Sat, 07 May 2005 19:50:50 GMT
Subject: Need help subclassing Borg
References: <pan.2005.05.07.12.28.34.263372@REMOVETHIScyber.com.au>
	<1115480121.527653.220780@o13g2000cwo.googlegroups.com>
	<pan.2005.05.07.16.42.08.299541@REMOVETHIScyber.com.au>
Message-ID: <427d188c.930555898@news.oz.net>

On Sun, 08 May 2005 02:42:09 +1000, Steven D'Aprano <steve at REMOVETHIScyber.com.au> wrote:

>On Sat, 07 May 2005 08:35:21 -0700, wittempj at hotmail.com wrote:
>
>> See mr Martellis comment of 2001/09/06 in mentiond recipe, you then get
>> something like this
>> 
>> -#!/usr/bin/env python
>> -class Borg(object):
>> -    _shared_state = {}
>> -    def __init__(self):
>> -        self.__dict__ = self._shared_state
>> -
>> -class Duck(Borg):
>> -    def __init__(self):
>> -        super(Duck, self).__init__()
>> -        self.__covering = "feathers" # all ducks are feathered
>
>What version of Python are you using? I'm using 2.3.3 and I get this:
>
>py> donald = Duck()
>Traceback (most recent call last):
>  File "<stdin>", line 1, in ?
>  File "<stdin>", line 3, in __init__
>TypeError: super() argument 1 must be type, not classobj
>
>
>
>>-        self.__covering = "feathers" # all ducks are feathered
>>-    def covering(self):
>>-        return self.__covering
>>-
>>-class Rabbit(Borg):
>>-    def __init__(self):
>>-        super(Rabbit, self).__init__()
>>-        self.__covering = "fur" # all rabbits are furry
>> -    def covering(self):
>> -        return self.__covering
>
>Hmmm... I hate to be ungrateful, but apart from being inelegant, it means
>having to write get_attribute() and set_attribute() methods for every
>attribute the caller might conceivably use. I'm sure to miss at least one.
>*wink*
>
>Either that or muck around with __getattr__ and __setattr__, which is
>getting uglier by the minute.
>
>I'm thinking what I might need is a function that generates a Borg-like
>class. So I would do something like:
>
>Rabbit = MakeBorgClass()
># Rabbit is now a class implementing shared state
># all instances of Rabbit share the same state
>Duck = MakeBorgClass()
># Duck is now a class implementing shared state
># all instances of Duck share the same state
># but instances of Duck do not share state with instances of Rabbit
>
>Problem is, I haven't got the foggiest idea how to implement something
>like that. Am I on the right track? Where do I go from here?
>
On to new-style classes perhaps? You could have a base class that automatically
gives a subclass its own _shared_state if it isn't there, and tacks that onto
the new instance. That way you don't have to do it in your subclass inits. E.g.,
(warning, not tested beyond what you see. Just thought of this ;-)

 >>> class Borgomat(object):
 ...     def __new__(cls, *args, **kw):
 ...         if '_shared_state' not in cls.__dict__:
 ...             cls._shared_state = {}
 ...         obj = object.__new__(cls)
 ...         obj.__dict__ = cls._shared_state
 ...         return obj
 ...
 >>> class Duck(Borgomat):
 ...     def __init__(self, **kw):
 ...         self.covering = 'feathers'
 ...         self.__dict__.update(kw)
 ...
 >>> daffy = Duck()
 >>> daffy.covering
 'feathers'
 >>> Duck._shared_state
 {'covering': 'feathers'}
 >>> class Rabbit(Borgomat):
 ...     def __init__(self):
 ...         self.covering = 'fur'
 ...
 >>> bugs = Rabbit()
 >>> bugs.covering
 'fur'
 >>> Rabbit._shared_state
 {'covering': 'fur'}
 >>> bugs.food = 'carrots'
 >>> Rabbit._shared_state
 {'food': 'carrots', 'covering': 'fur'}
 >>> roger = Rabbit()
 >>> roger.food
 'carrots'

Oops, forgot to use the optional keyword arg in Duck ...

 >>> donald = Duck(food='Disney duck chow')
 >>> donald.food
 'Disney duck chow'
 >>> donald.covering
 'feathers'
 >>> daffy.food
 'Disney duck chow'

Some shared state may not be all that appropriate ;-)

Regards,
Bengt Richter


From michele.simionato at gmail.com  Thu May 19 02:38:14 2005
From: michele.simionato at gmail.com (Michele Simionato)
Date: 18 May 2005 23:38:14 -0700
Subject: self-promotion of the decorator module (Was: How to learn OO of
	python?)
Message-ID: <1116484694.122678.11980@f14g2000cwb.googlegroups.com>

could ildg wrote:

> I think decorator is a function which return a function, is this
right?
> e.g. The decorator below if from
http://www.python.org/peps/pep-0318.html#id1.
>
> def accepts(*types):
>     def check_accepts(f):
>         assert len(types) == f.func_code.co_argcount
>         def new_f(*args, **kwds):
>             for (a, t) in zip(args, types):
>                 assert isinstance(a, t), \
>                        "arg %r does not match %s" % (a,t)
>             return f(*args, **kwds)
>         new_f.func_name = f.func_name
>         return new_f
>     return check_accepts
>
> After I saw all the examples, I concluded that every decorator must
> define an inner function which takes only one argument, the
> function to decorate. Is this right?
>

Yes, but you may want to look at my decorator module:

http://www.phyast.pitt.edu/~micheles/python/decorator.zip

Your example would be written as follows:

from decorator import decorator

def accepts(*types):
    def check_accepts(f, *args, **kw):
        assert len(types) == f.func_code.co_argcount
        for a, t in zip(args, types):
            assert isinstance(a, t), "arg %r does not match %s" % (a,t)
        return f(*args, **kw)
    return decorator(check_accepts)

with the following advantages:

1. one-level of nesting is saved ("flat is better than nested")
2. name, docstring and dictionary of the original function are
    preserved;
3. the signature of the original function is preserved (this one is
nontrivial).


              Michele Simionato



From steve at holdenweb.com  Tue May 17 00:59:33 2005
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 17 May 2005 00:59:33 -0400
Subject: Null String Variable
In-Reply-To: <1116284293.856204.97470@g47g2000cwa.googlegroups.com>
References: <d6b27n$eai$1@nic.grnet.gr>
	<1116284293.856204.97470@g47g2000cwa.googlegroups.com>
Message-ID: <42897A35.6040505@holdenweb.com>

Sean McIlroy wrote:
> well, somebody's already pointed out that bool(msg)==False iff msg==''.
> i'm curious to know what's wrong with simply writing
> 
> if msg=='':
>     ## do_something
> 
You would write this if there was a possibility that msg could be 
something other than a string, whose value might also be interpreted as 
False by the "if" (e.g. the None object, or an empty list) even though 
your application wanted to handle it differently from an empty string.

regards
  Steve
-- 
Steve Holden        +1 703 861 4237  +1 800 494 3119
Holden Web LLC             http://www.holdenweb.com/
Python Web Programming  http://pydish.holdenweb.com/



From ivanlan at pauahtun.org  Wed May 11 23:43:01 2005
From: ivanlan at pauahtun.org (Ivan Van Laningham)
Date: Wed, 11 May 2005 21:43:01 -0600
Subject: Python Documentation (should be better?)
References: <5C99C308457E6D4EA5448EA52A66004A675A6E@or.mxim.com>	<17026.26789.592527.975821@montanaro.dyndns.org>	<mailman.398.1115843305.29826.python-list@python.org>	<428276e8$0$318$626a14ce@news.free.fr>	<mailman.411.1115854727.29826.python-list@python.org>	<lvudnZwSQdrDAh_fRVn-sQ@comcast.com>
	<4282A5DF.44C84B18@pauahtun.org> <d5u8mk$k6n$1@sea.gmane.org>
Message-ID: <4282D0C5.3A8B3786@pauahtun.org>

Hi All--

Robert Kern wrote:
> 
> Ivan Van Laningham wrote:
> 
> > http://www.python.org/doc/
> >
> Searching on docs.python.org goes through just the stuff that's on
> docs.python.org, which is pretty much just documentation. Google's magic
> points to the current documentation.
> 
> Searching on www.python.org trolls through the entire www.python.org
> site. The search box doesn't narrow its scope just because you happen to
> be in the Documentation section currently. It doesn't get the current
> documentation because Google's magic gets a bit confused.
> 

I get that.  My question, cleverly concealed in a rant, was, "Why does
clicking on the Documentation link at python.org NOT take me to
docs.python.org?"  Why is there a difference?  If there must be a
difference, why isn't the difference labelled as such?  This is a
difference that makes a difference.

Metta,
Ivan
----------------------------------------------
Ivan Van Laningham
God N Locomotive Works
http://www.pauahtun.org/
http://www.foretec.com/python/workshops/1998-11/proceedings.html
Army Signal Corps:  Cu Chi, Class of '70
Author:  Teach Yourself Python in 24 Hours


From could.net at gmail.com  Wed May 18 22:09:42 2005
From: could.net at gmail.com (could ildg)
Date: Thu, 19 May 2005 10:09:42 +0800
Subject: How to learn OO of python?
In-Reply-To: <1116417641.929050.30860@g14g2000cwa.googlegroups.com>
References: <mailman.130.1116402087.8733.python-list@python.org>
	<1116417641.929050.30860@g14g2000cwa.googlegroups.com>
Message-ID: <311b5ce1050518190955862234@mail.gmail.com>

Thanks very much to Harlin Seritt.
Your example is really helpful to me.

I read some more docs on python oop and I am more clear
now. But when I try to understand Decorators for Functions and Methods
in PEP 318, I got puzzled. How do Decorators work? 

I think decorator is a function which return a function, is this right?
e.g. The decorator below if from http://www.python.org/peps/pep-0318.html#id1.

def accepts(*types):
    def check_accepts(f):
        assert len(types) == f.func_code.co_argcount
        def new_f(*args, **kwds):
            for (a, t) in zip(args, types):
                assert isinstance(a, t), \
                       "arg %r does not match %s" % (a,t)
            return f(*args, **kwds)
        new_f.func_name = f.func_name
        return new_f
    return check_accepts

After I saw all the examples, I concluded that every decorator must
define an inner function which takes only one argument, the
function to decorate. Is this right?

On 5/18/05, Harlin Seritt <harlinseritt at yahoo.com> wrote:
> could ildg wrote:
> > I have learned python for over a month.
> > I heard that it was very easy to learn, but when I tried to know OO
> of python,
> > I found it really weird, some expressions seem very hard to
> understand,
> > and I can't find enough doc to know any more about it.
> > So, I wonder how did you master python? And where to find some cool
> docs?
> >
> > Thanks.
> 
> I think I know what you mean. When I first started trying to learn the
> OOP aspect of Python I thought it was strange since I had started with
> OOP on Java and C++. Nonetheless, once you get the hang of it, OOP will
> make way more sense than all of the complications of Java and C++ class
> implementations. Let me give you a quick example of what I'm talking
> about:
> 
> class Animal:
>    def eats(self):
>       print 'The animal eats.'
>    def walks(self):
>       print 'The animal walks.'
> 
> """Here the class Dog instantiates the class Animal. 'Dog' will 'do'
> whatever 'Animal' does plus some other things which we will describe in
> this class code."""
> class Dog(Animal):
>    """#the self keyword means that this function will be a class
> function"""
>    def communicate(self):
>       print 'The dog barks.'
> 
>    """# __init__ function defines what # #will happen as soon as this
> class is instantiated. Also, the overloaded variable designators (color
> = None, fur = None) allow the instantiator to optionally define these
> variables when called from elsewhere."""
> 
>    def __init__(self, color=None, fur=None):
>       """# this time self will designate the variable 'color' # as a
> class variable."""
>       self.color = color
>       self.fur = fur
> 
> if __name__ == '__main__':
>    sparky = Dog(color="White", fur="Short")
>    sparky.communicate()
>    print sparky.color
>    print sparky.fur
>    print sparky.eats()   # Here sparky will access 'Animal' methods
> that 'Dog' inherited.
>    print sparky.walks()  # Another method originating from the 'Animal'
> class.
> 
> What happens if you don't use 'self' inside your class code? You won't
> be able to access it within the class outside of the method where you
> initialized it. For instance, if you don't designate color with self
> then you can only use the 'color' variable within the __init__()
> method. This is useful whenever you want to use 'color' as a private
> variable.
> 
> The same also goes for methods. Hopefully, you see how useful this can
> be down the road. This way you won't have to use variable/method access
> modifiers like Public, Private, Protected and so forth. If this doesn't
> make sense or you want more clarity, please let me know.
> 
> Good luck,
> 
> Harlin Seritt
> 
>


From elrei69 at yahoo.es  Tue May 24 10:39:33 2005
From: elrei69 at yahoo.es (Ximo)
Date: Tue, 24 May 2005 16:39:33 +0200
Subject: execution error
References: <3fehq6F7flfgU1@individual.net>
	<mailman.30.1116869883.18027.python-list@python.org>
Message-ID: <3fgsl0F7p21dU1@individual.net>


"Skip Montanaro" <skip at pobox.com> escribi? en el mensaje 
news:mailman.30.1116869883.18027.python-list at python.org...
>
>    Ximo> And my question is how can show the execution error whitout exit
>    Ximo> of the program, showing it in the error output as
>
> You need to catch ZeroDivisionError.  Here's a trivial example:
>
>    >>> try:
>    ...   6/0
>    ... except ZeroDivisionError:
>    ...   print "whoops! divide by zero..."
>    ...
>    whoops! divide by zero...

But I execute the operation in the else:

    try:
       except ZeroDivisionError:
       print "whoops! divide by zero..."
    else:
       execute( )

The exeption is produced after.









>
> Skip 




From phillip.watts at anvilcom.com  Thu May  5 16:30:58 2005
From: phillip.watts at anvilcom.com (phil)
Date: Thu, 05 May 2005 15:30:58 -0500
Subject: Encryption with Python?
References: <1115324411.952821.150780@o13g2000cwo.googlegroups.com>
Message-ID: <427A8282.1010307@anvilcom.com>

Bill Gates us MD5. Hah!
Sorry. :-)

Blake T. Garretson wrote:

> I want to save some sensitive data (passwords, PIN numbers, etc.) to
> disk in a secure manner in one of my programs.  What is the
> easiest/best way to accomplish strong file encryption in Python?  Any
> modern block cipher will do: AES, Blowfish, etc.  I'm not looking for
> public key stuff; I just want to provide a pass-phrase.
> 
> I found a few modules out there, but they seem to be all but abandoned.
>  Most seem to have died several years ago.  The most promising package
> is A.M. Kuchling's Python Cryptography Toolkit
> (http://www.amk.ca/python/code/crypto.html).
> 
> Is this the defacto Python encryption solution?  What does everyone
> else use?  Any other suggestions?  The SSLCrypto package
> (http://www.freenet.org.nz/python/SSLCrypto/) may be a good alternative
> too, but I am not sure if it is actively maintained.
> 
> Thanks,
> Blake
> 
> 





From vvenkatagr at yahoo.com  Tue May 31 06:12:49 2005
From: vvenkatagr at yahoo.com (venkat)
Date: 31 May 2005 03:12:49 -0700
Subject: Generalized Linear Least Squares Problems
Message-ID: <1117534369.263476.120510@o13g2000cwo.googlegroups.com>

Hi,

I want to solve linear least sqaure problem( min||c-Ax||2 subject to
Bx=d ). How do I do it in python. lapack has a routine for doing this
(DGGLSE). Can I access this from python?

TIA,
venkat.



From bill.mill at gmail.com  Thu May 12 15:36:09 2005
From: bill.mill at gmail.com (Bill Mill)
Date: Thu, 12 May 2005 15:36:09 -0400
Subject: increment bits
In-Reply-To: <1115925555.287850.308390@z14g2000cwz.googlegroups.com>
References: <1115925555.287850.308390@z14g2000cwz.googlegroups.com>
Message-ID: <797fe3d405051212367366c3dc@mail.gmail.com>

On 12 May 2005 12:19:15 -0700, ashtonn at gmail.com <doodle4 at gmail.com> wrote:
> Hello,
> 
> How do i manipulate arrays to increment 8 bits at a time.
> 
> I need to generate a pattern like
> 01,02,03,.....0xFF

>>> [hex(n) for n in range(256)]
['0x0', '0x1', '0x2', '0x3', '0x4', '0x5', '0x6', '0x7', '0x8', '0x9', '0xa', '0
xb', '0xc', '0xd', '0xe', '0xf', '0x10', '0x11', '0x12', '0x13', '0x14', '0x15',
 '0x16', '0x17', '0x18', '0x19', '0x1a', '0x1b', '0x1c', '0x1d', '0x1e', '0x1f',
<snipped>
 '0xe8', '0xe9', '0xea', '0xeb', '0xec', '0xed', '0xee', '0xef', '0xf0', '0xf1',
 '0xf2', '0xf3', '0xf4', '0xf5', '0xf6', '0xf7', '0xf8', '0xf9', '0xfa', '0xfb',
 '0xfc', '0xfd', '0xfe', '0xff']

Peace
Bill Mill
bill.mill at gmail.com


From bearophileHUGS at lycos.com  Sun May  1 06:04:16 2005
From: bearophileHUGS at lycos.com (bearophileHUGS at lycos.com)
Date: 1 May 2005 03:04:16 -0700
Subject: ANN: pynetwork 2.25
In-Reply-To: <1114928748.216666.68150@g14g2000cwa.googlegroups.com>
References: <1114902816.077510.229560@l41g2000cwc.googlegroups.com>
	<1114928748.216666.68150@g14g2000cwa.googlegroups.com>
Message-ID: <1114941856.850079.190620@g14g2000cwa.googlegroups.com>

Kay Schluehr>What is wrong with the other librarys that they can't be
approved?<

I presume there are so many kinds of graphs, that one data structure
doesn't fit all... On the other hand, I think that trying to design a
too much general data structure can have some drawbacks. I've tried a
compromise, something fast that can be used in many situations.


saddle>I can't understand why name a graph library 'nework' :)

I've used the PyNewtwork name for the project because PyGraph name is
already used, and in graph theory my structure is called "network" (a
digraph with weighted edges):
http://en.wikipedia.org/wiki/Network_%28mathematics%29

Bye,
Bearophile



From querypk at gmail.com  Fri May  6 15:36:30 2005
From: querypk at gmail.com (querypk at gmail.com)
Date: 6 May 2005 12:36:30 -0700
Subject: min max of a list
In-Reply-To: <JNCdnYvdNOGEJ-bfRVn-vQ@comcast.com>
References: <1115245476.036508.273930@g14g2000cwa.googlegroups.com>
	<gaCdnf8Pf9xj7-TfRVn-tQ@comcast.com>
	<1115259992.558123.189580@g14g2000cwa.googlegroups.com>
	<temdnRBabsR2_effRVn-gg@comcast.com>
	<1115396805.064114.183010@f14g2000cwb.googlegroups.com>
	<JNCdnYvdNOGEJ-bfRVn-vQ@comcast.com>
Message-ID: <1115408190.437054.222350@z14g2000cwz.googlegroups.com>

I get a syntax error in  :

 py> [(min((abs(p - v), v) for v in valleys + [0] if v < p)[1],
...   p,
...   min((abs(p - v), v) for v in valleys if v > p)[1])
...  for p in peaks]



From steven.bethard at gmail.com  Sat May 14 18:14:57 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Sat, 14 May 2005 16:14:57 -0600
Subject: A new to Python question
In-Reply-To: <1116107944.677219.17980@o13g2000cwo.googlegroups.com>
References: <1116088663.428932.130860@g43g2000cwa.googlegroups.com>
	<rfnhl2-ig5.ln1@Bernd.Nawothnig.dialin.t-online.de>
	<1116093118.599403.35940@g14g2000cwa.googlegroups.com>
	<tsKdnfF2xaKu3BvfRVn-iQ@comcast.com>
	<1116102355.715816.192840@z14g2000cwz.googlegroups.com>
	<b_udnUJIuPqb_hvfRVn-hw@comcast.com>
	<b_udnX1IuPoi_hvfRVn-hw@comcast.com>
	<1116107944.677219.17980@o13g2000cwo.googlegroups.com>
Message-ID: <meydnQ9jW8rD5RvfRVn-uA@comcast.com>

M.E.Farmer wrote:
>>They're both an UNPACK_SEQUENCE byte-code.
> 
> I have dissed it myself ;)
> My argument, if you can call it that, is that it is not clear that
> Python is going to do a tuple unpacking here or not !

Hmm...  Well, I wouldn't say that.  I think it's quite clear that 
Python's doing a tuple unpacking.  Just like it always does anytime 
there's a comma on the left-hand side of an assignment statement.

Note that there's nothing that forces you to write the unpack sequence 
like a tuple display.  You can write it like a list display too, and 
Python will treat it identically:

py> def unpack_tuple(t):
...     [x, y] = t
...
py> dis.dis(unpack_tuple)
   2           0 LOAD_FAST                0 (t)
               3 UNPACK_SEQUENCE          2
               6 STORE_FAST               2 (x)
               9 STORE_FAST               1 (y)
              12 LOAD_CONST               0 (None)
              15 RETURN_VALUE

I don't know how UNPACK_SEQUENCE is implemented, but at least on the 
Python level, no tuple or list is created in the unpacking process.

> Seems weird, non-intuitive that a tuple unpacking and tuple creation
> have the same bytecode.

Sorry, I don't understand.  Why do you think this?

py> def create_tuple(x, y):
...     (x, y)
...
py> dis.dis(create_tuple)
   2           0 LOAD_FAST                0 (x)
               3 LOAD_FAST                1 (y)
               6 BUILD_TUPLE              2
               9 POP_TOP
              10 LOAD_CONST               0 (None)
              13 RETURN_VALUE
py> def unpack_tuple(t):
...     x, y = t
...
py> dis.dis(unpack_tuple)
   2           0 LOAD_FAST                0 (t)
               3 UNPACK_SEQUENCE          2
               6 STORE_FAST               2 (x)
               9 STORE_FAST               1 (y)
              12 LOAD_CONST               0 (None)
              15 RETURN_VALUE

To me, it looks like tuple creation uses the BUILD_TUPLE op-code, and 
tuple unpacking uses the UNPACK_SEQUENCE op-code.  Could you explain 
what you meant by "a tuple unpacking and tuple creation have the same 
bytecode"?

STeVe


From newpip at gmail.com  Mon May 16 02:26:39 2005
From: newpip at gmail.com (new pip)
Date: Mon, 16 May 2005 14:26:39 +0800
Subject: Detect console close
Message-ID: <bccb8928050515232640db56c6@mail.gmail.com>

In Windows, when I double click on my .py file, the program runs with
a console. How can I detect when the console is closed? Any code
samples are appreciated.

Thank you.


From fredrik at pythonware.com  Mon May  9 11:01:03 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Mon, 9 May 2005 17:01:03 +0200
Subject: Trouble saving unicode text to file
References: <1115500976.571232.76100@z14g2000cwz.googlegroups.com><427DDAA5.9020606@v.loewis.de><t4qr71h88us709h4es4oa4fbamnkgkj0sj@4ax.com><427E5136.4000300@v.loewis.de>	<gq0t7194aiuock5t67gqvudokla2lr7hbp@4ax.com><mailman.207.1115645364.29826.python-list@python.org>
	<427f6c37$0$283$edfadb0f@dread12.news.tele.dk>
Message-ID: <d5ntho$o7s$1@sea.gmane.org>

Max M wrote:

>> (I just noticed that there's no euro sign on my swedish keyboard.  I've
>> never missed it ;-)
>
> It's probably "AltGR + E" like here in DK

ah, there it is.  almost entirely worn out.  and it doesn't work.  but a little
fooling around reveals that AltGr+5 does work.  oh well, you learn some-
thing new every day.

</F> 





From __peter__ at web.de  Wed May  4 04:18:06 2005
From: __peter__ at web.de (Peter Otten)
Date: Wed, 04 May 2005 10:18:06 +0200
Subject: PHPParser pod Zope
References: <yttaxdmad3aa$.1cemtbg8lyvba.dlg@40tude.net>
	<4277d8ea$0$18802$636a15ce@news.free.fr>
	<1115181234.612599.83930@g14g2000cwa.googlegroups.com>
	<mailman.142.1115193359.6583.python-list@python.org>
Message-ID: <d5a0eo$e7m$05$1@news.t-online.com>

Josef Meile wrote:

[Non-English/non-Polish answers to a post in Polish]

> I don't find this two replies funy :-(. I think it is impolite to make
> fun of the OP. You could say: "The official language is english" or
> something like that. And if somebody knows the language he speaks, then
> a pointer to an appropiate list would be usefull.

Relax. The original message was also posted to pl.comp.lang.python, and it
seems this was rather a mistake than helplessness.

Peter


From kent37 at tds.net  Fri May  6 14:00:24 2005
From: kent37 at tds.net (Kent Johnson)
Date: Fri, 06 May 2005 14:00:24 -0400
Subject: min max of a list
In-Reply-To: <1115245476.036508.273930@g14g2000cwa.googlegroups.com>
References: <1115245476.036508.273930@g14g2000cwa.googlegroups.com>
Message-ID: <427bac26$1_3@newspeer2.tds.net>

querypk at gmail.com wrote:
> If this is the list.
> 
> values = [  0,  72,   0,   4,   9,   2,   0,   0,  42,  26,   0, 282,
> 23,   0, 101, 0,   0,   0,   0,   0]
> 
> as we can see there are peaks in the list.that is 0,72,0 is a
> group(triangle) with peak 72.then 0,   4,   9,   2,   0,   0 with peak
> 9 and 0,  42,  26,   0 with 42 and so on...
> what I want is the left and right bound index of each bin(triangle).The
> list could as big as possible.So some heurestic algorithm which could
> first find max in the list and look for local maxima and minima and
> group its adjcent bounds.Then find next max and group the bins and so
> on.
> 
> so that we can get
> 
> [[0,2],[2,7],[7,10],[10,13]]
> ( indexes of the bounds in the values list). so first group [0,2]
> correspond to 0,72,0 in the values list and so on...
> Hope I am clear.

ISTM you just have to look for the valleys - places where the values change from descending to 
ascending. Here is a simple-minded way to do it:

def findPeaks(values):
     groups = []
     startIx = 0
     lastValue = values[0]
     ascending = True

     for i, value in enumerate(values[1:]):
         if value <= lastValue:
             ascending = False
         else:
             if not ascending:
                 # Switch from descending to ascending
                 groups.append( [startIx, i] )
                 startIx = i
                 ascending = True

         lastValue = value

     # Get the last group if any
     if i > startIx:
         groups.append( [startIx, i] )

     return groups


values = [  0,  72,   2,   4,   9,   2,   0,   0,  42,  26,   0, 282,
23,   0, 101, 0,   0,   0,   0,   0]

print findPeaks(values)

## prints:
[[0, 2], [2, 7], [7, 10], [10, 13], [13, 18]]

Kent


From http  Thu May 19 01:30:57 2005
From: http (Paul Rubin)
Date: 18 May 2005 22:30:57 -0700
Subject: Is Python suitable for a huge, enterprise size app?
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>
	<1116432325.497438.64580@g49g2000cwa.googlegroups.com>
	<1116433218.495131.71260@g49g2000cwa.googlegroups.com>
	<1116443474.565264.176640@g44g2000cwa.googlegroups.com>
Message-ID: <7xd5rn93zi.fsf@ruckus.brouhaha.com>

"Kay Schluehr" <kay.schluehr at gmx.net> writes:
> To answer Your initial question: there is probably no technical reason
> against Python as a language or the CPython runtime. Both are very
> stable and mature.

I'd like to agree with this but I just can't.  Python is a great
language for prototyping and trying stuff out.  It's fast and pleasant
to write.  But you're right when you say that constant testing and
integration is absolutely necessary to develop anything substantial in
Python.  That is not a virtue, it's a fact that you need all that
testing and correction because it's so easy to make errors and break
things.  The implementation is not so solid either.  I find I file a
few bug reports in sourceforge (or these days often don't even bother)
just about every time I code something new in Python.  I don't know if
language bugs discovered per kLOC written is a normal metric, but for
CPython, in my experience, I'd have to say that number is rather high
as compared with other languages.  Examples I've found in just the
past couple days:

   1) the socket module messes with instance variables on socket
      objects in a way that stops the obvious
         class logging_socket(socket):
            # version of socket that logs all output to the console
            def send(self, mesg):
                print 'socket sending', repr(msg)
                socket.send(self, mesg)
     from working properly.  This cost me about an hour of head scratching
     to figure out what was going on.  Some might say nothing is wrong,
     others might say the socket module could use some reorganization,
     but I'd say it's a questionable feature of the Python language
     that this kind of bug can exist at all.  I'm not a Java expert but
     I believe this particular bug would be impossible in Java.

   2) If you want to display a gif image in tkinter, you can make a
      frame object, put a canvas in it, and put a PhotoImage object
      onto the canvas, which works fine.  But if you use your own
      subclass of frame (maybe to add your own gui stuff), for some
      reason the gif doesn't display in the canvas.  Also, if you run
      your frame's mainloop in its own thread, the gif sometimes
      doesn't display.  I'm still trying to figure this one out.  And
      every incident like this means I'm spending my time debugging
      the Python library instead of writing my own code.

The documentation is spotty (Tkinter?  Hah.) and the runtime library's
idea of supporting some protocol or standard is often to implement
some simple cases and not bother with the more difficult details.  So
users tend to look in the manual and say "yeah, Python supports
[whatever]" and then get bitten later when they find that the support
for [whatever] is quite incomplete (look at the socket module's SSL
support, which doesn't bother validating the certificates, for an
extreme example, but it's similar with urllib, imaplib, etc.)  Python
advocates also tend to say "Python supports such-and-such" if there's
a 3rd party module that supports it (e.g. the standard distro has no
support whatsoever for SQL server connectivity, so the OP's megabuck
app's developers will have to deal with a different set of maintainers
for some ODBC class than for the stdlib).  An old version of the
Twisted Matrix docs explained why Twisted reimplemented so much stuff
that was already in CPython, saying something like "it may look like
we're reinventing the wheel, but we found the old wheels were often
square and made of glue".  Or as Jamie Zawinski said about X-Windows,
"using these toolkits is like trying to make a bookshelf out of mashed
potatoes."

Java's runtime library has a rather ugly and tasteless design compared
with Python's, but it's much more thorough (includes JDBC, JSSE, a
more serious threading implementation, etc.), the documentation
coverage is pretty good, and when they implement a standard, they do
tend to implement it completely.

I'm in the middle of prototyping something in Python and it's going
pretty well despite occasional snags like those mentioned above.  But
at the end of the day I don't think what we get will be solid enough
for use in production.  We're planning to use the Python prototype to
get the feature set and protocols figured out, then reimplement in Java.  
The OP might consider that approach.


From steve at holdenweb.com  Thu May 19 12:18:06 2005
From: steve at holdenweb.com (Steve Holden)
Date: Thu, 19 May 2005 12:18:06 -0400
Subject: Python forum
In-Reply-To: <428C99D4.1DD68D67@pauahtun.org>
References: <mailman.84.1116320178.8733.python-list@python.org>	<pan.2005.05.17.10.38.09.537008@gmx.at>	<428B1803.80509@softhome.net>	<17035.17855.129397.462296@montanaro.dyndns.org>	<d6fh1f$cqo$1@sea.gmane.org>	<mailman.149.1116427615.8733.python-list@python.org>	<d5udneWdj5rADhHfRVn-iQ@powergate.ca>
	<428C99D4.1DD68D67@pauahtun.org>
Message-ID: <d6ie60$d5p$1@sea.gmane.org>

Ivan Van Laningham wrote:
> Hi All--
> 
> Peter Hansen wrote:
> 
>>Ivan Van Laningham wrote:
>>
>>>Robert Kern wrote:
>>>
>>>>dict.org says _forums_. I used _fora_, but I'm silly.
>>>>
>>>
>>>It also says "appendixes" and "indexes" are OK.  Yahoos.
>>
>>Should that be "Yaha"?
>>
> 
> 
> <g>  Nope.  I appreciate the sentiment, but "Yahoo" is neither Latin nor
> Greek.  Instead, it was invented by Jonathan Swift for _Gulliver's
> Travels_, published in 1726; since it is a made-up English word, it
> follows the rules of English.
> 
Yeeha, possibly?

regards
  Steve
-- 
Steve Holden        +1 703 861 4237  +1 800 494 3119
Holden Web LLC             http://www.holdenweb.com/
Python Web Programming  http://pydish.holdenweb.com/



From jerf at jerf.org  Sat May 14 00:20:19 2005
From: jerf at jerf.org (Jeremy Bowers)
Date: Sat, 14 May 2005 00:20:19 -0400
Subject: Faster GUI text control
References: <A_udnVpGA43xjBjfRVn-iQ@comcast.com>
Message-ID: <pan.2005.05.14.04.20.18.359033@jerf.org>

On Fri, 13 May 2005 15:44:24 -0500, none wrote:

>   I'm trying to decide what is the best replacement for the control.  I
> was originally planning on redoing the GUI with wxpython, but I've seen
> people indicate I would have the same problem.

Honestly, if this is important to you, the best thing to do is try all the
ones relevant to your platform; generally creating a window with a text
widget and loading it with "a whole lotta text", as appropriate to your
app, is fairly easy; it is not true that once you've tried one GUI toolkit
you've tried them all, but each one is easier than the last, and
generally, you can:

* Use the tutorial up to where they place a widget.

* Jump to the reference manual where they describe the text widget and
insert it instead. 

* Fill the widget with a bunch of text. ("some string\n"*100000 or
something works well.)

* Start the program and go.

Not counting downloading, an hour each, tops. (The only tricky one that I
am aware of is that GTK insists that text widgets have to be in a Scrolled
Window to get a scrollbar on them.)

The problem is that if you're really looking for performance, it may
differ based on the characteristics of the text and the quality of the
target computer, the platform (which you don't mention; GTK may scream in
Linux and make you scream in Windows...), etc., and there may be no one
person who can give you a firm "This is the best solution for your
situation" answer.


From jabel at plus.net  Wed May 25 12:04:53 2005
From: jabel at plus.net (John Abel)
Date: Wed, 25 May 2005 17:04:53 +0100
Subject: ReWrite Request Within SocketServer?
Message-ID: <4294A225.3040402@plus.net>

Hi!

I may be missing something simple, but is there a way to have 
verify_request change the request before it gets processed by the 
RequestHandlerClass?

Regards

J


From claird at lairds.us  Wed May 11 07:08:02 2005
From: claird at lairds.us (Cameron Laird)
Date: Wed, 11 May 2005 11:08:02 GMT
Subject: Using TCL files in Python ?
References: <pan.2005.05.11.09.15.00.27816@optushome.com.au>
Message-ID: <h749l2-e23.ln1@lairds.us>

In article <pan.2005.05.11.09.15.00.27816 at optushome.com.au>,
Peter Moscatt  <pgmoscatt at optushome.com.au> wrote:
>I am reasonably new to programming in Python. [Using LINUX]
>
>Up until now I have been using GUI widgets supplied by 'Tkinter' but
>starting to realise that Tkinter have limited widgets.
>
>I have been given the lead that I should look at other sources for GUI
>widgets - namely TCL.
>
>I have just done a search for 'tcl' files on my 'Fedora 3' installation
>and find I have available:
>
>  Tix8.1
>  Tcl8.4
>  Tk8.4
>
>I have never used TCL code under Python so I assume I can use widgets from
>any of these providers ?
>
>Where is a good resource I can use to help understand how to use TCL files
>in Python ?
			.
			.
			.
It's likely to take a few rounds to make these things clear.  I'll start.

You want more widgets than base Tkinter supplies.  I understand that.
Please read <URL: http://starship.python.net/crew/cjr/tkinter.html >.

It is indeed useful to look to Tcl for functionality to use in Tkinter.
I detect a couple of missteps in how you're thinking about this, though.
First, Tcl adepts generally speak of "Tk" or "Tcl/Tk" when considering
widgetry; in idiomatic Tcl-speak, "Tcl" itself has no widgets.

You're right to mention Tix, Tk, and Tcl as Tcl-related installations
Fedora includes.  There actually are a few more, but you needn't concern
yourself with them now.  Of these, Tkinter already includes all the
functionality of Tcl and Tk, and the hyperlink provided above explains
Tix.

What if you encounter other Tcl packages?  Keep in mind that many Tcl
packages have nothing to do with graphical user interfaces (GUIs); they
do network programming or satellite management or locomotive control or
other domain-specific stuff that's orthogonal to GUIing.  Tkinter *can*,
generally, exploit Tcl-coded GUI extensions.  One of us will follow-up
with a reference to that topic.


From kent37 at tds.net  Mon May  2 08:17:14 2005
From: kent37 at tds.net (Kent Johnson)
Date: Mon, 02 May 2005 08:17:14 -0400
Subject: Using wildcards...
In-Reply-To: <1115031662.593097.172810@z14g2000cwz.googlegroups.com>
References: <1115031662.593097.172810@z14g2000cwz.googlegroups.com>
Message-ID: <427615cd$1_3@newspeer2.tds.net>

Harlin Seritt wrote:
> I looked all over the net but could not find if it is possible to
> insert wildcards into strings. What I am trying to do is this: I am
> trying to parse text from a Bible file. In case you're not familiar
> with the way the Bible organizes itself, it is broken down into Books >
> Chapters > Verses. The particular text I am working with are organized
> into Book files (*.txt -- flat text file). Here is what the file looks
> like:
> 
> {1:1} Random text here. {1:2} More text here. and so on.
> 
> Of course the {*} can be of any length, so I can't just do .split()
> based on the length of the bracket text. What I would like to do is to
> .split() using something akin to this:
> 
> textdata.split('{*}') # The '*' being a wildcard

You can do this with the re module. For example

  >>> import re
  >>> s = '{1:1} Random text here. {1:2} More text here. and so on.'
  >>> re.split(r'\{[^}]+\}', s)
['', ' Random text here. ', ' More text here. and so on.']

If you want to be a little stricter in what you accept for the split you could look explicitly for 
digits:
  >>> re.split(r'\{\d+:\d+\}', s)
['', ' Random text here. ', ' More text here. and so on.']

Kent


From claird at lairds.us  Tue May 31 12:08:04 2005
From: claird at lairds.us (Cameron Laird)
Date: Tue, 31 May 2005 16:08:04 GMT
Subject: prime number
References: <1117421732.677244.237730@g49g2000cwa.googlegroups.com>
	<86wtphtm3f.fsf@guru.mired.org>
	<1117435844.389867.193900@g49g2000cwa.googlegroups.com>
Message-ID: <20eum2-dph.ln1@lairds.us>

In article <1117435844.389867.193900 at g49g2000cwa.googlegroups.com>,
lostinpython <shanna_perkins_02 at hotmail.com> wrote:
>It is a homework assignment from a book but not for a class.  I'm
>trying to teach my self some basic programming before I have to take it
>in college.  If I show enough understanding of the subject, my advisor
>will let me forgo Intro. to Programming and go into Intro. to C++.
>What civil engineers need with all this programming is beyond me.  We
>have to learn another language to program our CADD software, which I
>find much easier than this.  But needless to say, I'm stumped on this
			.
			.
			.
What's the crack about first place being a paid weekend vacation 
in Philadelpha, and second place five days?  Without knowledge of
the particulars of your situation, "Intro. to C++" sounds to me
more like punishment than incentive.

And I like C++.

One important instinct for your programming career is sensitivity
to "easier".  I strongly suspect, though, that there are real
values in "basic programming" that your "CADD software" has not 
yet taught you.


From http  Fri May 27 03:44:42 2005
From: http (Paul Rubin)
Date: 27 May 2005 00:44:42 -0700
Subject: More Rewrite Request Within SocketServer?
References: <mailman.163.1117179489.18027.python-list@python.org>
Message-ID: <7xr7ftkt91.fsf@ruckus.brouhaha.com>

John Abel <jabel at plus.net> writes:
> OK, I'm guessing what I was after ( see below ) isn't possible.  Does
> anyone know of an easy way of having verify_request inform the request
> handler of certain events, say client is unauthorised?  I thought of
> having it set a flag, and referring to it from the handler class (
> self.server.hostAllowed for example ), but that wouldn't work quite
> right in a threaded server.

I'd think you could do that.  Isn't the new thread already started
when the verify method runs?


From ken.miller at entouch.net  Tue May 10 13:18:17 2005
From: ken.miller at entouch.net (Kenneth Miller)
Date: Tue, 10 May 2005 12:18:17 -0500
Subject: Python Graphing Utilities.
Message-ID: <-dadnS0X7IVccR3fRVn-uQ@entouch.net>

Hello All,

    I am new to Python and i was wondering what graphing utlities would be
available to me. I have already tried BLT and after weeks of unsuccesful
installs i'd like to find something else. Anything someone would recommend?

Regards,
Ken




From vinay_sajip at yahoo.co.uk  Mon May 16 11:19:04 2005
From: vinay_sajip at yahoo.co.uk (Vinay Sajip)
Date: Mon, 16 May 2005 15:19:04 +0000 (UTC)
Subject: =?utf-8?b?bW9kX3B5dGhvbg==?= and logging
References: <3eoorhF46dasU1@individual.net>
Message-ID: <loom.20050516T171213-832@post.gmane.org>

Daniel Lichtenberger <daniel_usenet <at> yahoo.de> writes:

> I'm looking for a logging module to be used in a mod_python-powered
> website. Python 2.3's logging package seems like a good fit, however
> I'm not sure if it's completely safe to use it under high load. The
> library documentation states that it's thread-safe, but what about
> several forked apache processes running different (sub-)interpreters,
> logging to the same file? 

If you want to have multiple processes logging to the same file, the standard
Python logging module does not support interprocess synchronisation directly.
However, it is fairly easy to set up the processes to log events to a socket,
and a socket receiver can log received events to file. The online docs have an
example socket receiver:

http://docs.python.org/lib/network-logging.html

> Other suggestions for logging (I really don't need most of logging.*'s
> facilities) are also welcome.

Are you sure you'll never need them in the future?


Vinay Sajip



From simon.brunning at gmail.com  Thu May 26 12:54:37 2005
From: simon.brunning at gmail.com (Simon Brunning)
Date: Thu, 26 May 2005 17:54:37 +0100
Subject: Access from one class to methode of other class
In-Reply-To: <3fmc0hF8jsmkU1@news.dfncis.de>
References: <3flu22F8g4u4U1@news.dfncis.de>
	<4295f2aa$0$32750$626a14ce@news.free.fr>
	<3fmc0hF8jsmkU1@news.dfncis.de>
Message-ID: <8c7f10c60505260954723288ba@mail.gmail.com>

On 5/26/05, VK <myname at example.invalid> wrote:
> That is not real code, only dummy describing the problem

We realise that. The problem is that there are problems in your dummy
in addition to the real problems, and we can't tell them apart.

-- 
Cheers,
Simon B,
simon at brunningonline.net,
http://www.brunningonline.net/simon/blog/


From elrei69 at yahoo.es  Thu May 12 11:27:20 2005
From: elrei69 at yahoo.es (Ximo)
Date: Thu, 12 May 2005 17:27:20 +0200
Subject: How "return" no return ?
Message-ID: <3ehaurF34ak0U1@individual.net>

Hello, I want that the return sentence don't return anything, how can I do 
it?. If i do only return it returns None, and pass don't run too.

Can anyone help me?, thanks.
XIMO 




From fake at spamerom.niet  Tue May  3 14:50:33 2005
From: fake at spamerom.niet (JZ)
Date: Tue, 03 May 2005 18:50:33 GMT
Subject: PHPParser pod Zope
Message-ID: <yttaxdmad3aa$.1cemtbg8lyvba.dlg@40tude.net>

Probuje zainstalowac modul php pod zope i tam napisali dziwna rzecz ze
potrzebuje "PHP CGI program" a nie PHP CLI. Kompilacja php 5.0.4 pod
linuksem daje mi w wyniku mod_php + 5 plikow binarnych: pear, php,
php-config, phpextdist, phpsize. Zas lektura skryptu do zope jest nizbyt
jasna. Napisali:

#Path to the PHP-CGI-Interpreter.
#Modify it to where your PHP CGI program is located.PHP CLI does not work.
#                             ^^^
if sys.platform == 'win32':
    PHPath = "c:\\php\\php.exe"
    from win32pipe import popen2
else:
    ENVPath = "env"
    PHPath = "/usr/local/lib/php5/bin/php"
    from os import popen2

Przeciez odpowiednikiem php.exe jest wlasnie linuksowy php jako cli. Nic
nie rozumiem. Reczne odpalenie /usr/local/lib/php5/bin/php -v wyswietla mi
oczywiscie ze to jest CLI. O co im chodzi z tym php cgi? Czyzby o skrypt
odpalany w .../cgi-bin/? Ale wtedy dlaczego pod win32 to jest binarny
interpreter a tu nie? Jak na zlosc nie podali zadnego przykladu. :(

--
JZ


From klaus at seistrup.dk  Mon May  2 17:39:17 2005
From: klaus at seistrup.dk (Klaus Alexander Seistrup)
Date: Mon, 2 May 2005 21:39:17 +0000 (UTC)
Subject: WordPress Python Library 1.0
References: <Rmwde.850131$b5.37722456@news3.tin.it>
	<mailman.49.1115067917.6583.python-list@python.org>
	<VKwde.1322130$35.49403624@news4.tin.it>
Message-ID: <slrnd7d7g5.nn6.klaus@main.szn.dk>

Michele Ferretti wrote:

> ok, sorry, but subject is very explicit!

Still, it's insufficient for those of us who doesn't know what WordPress 
is, and it's a waste of time for those of us who don't speak Italian.  
C'mon, pal, you can do much better than that!

-- 
Klaus Alexander Seistrup
Magnetic Ink, Copenhagen, Denmark
http://magnetic-ink.dk/


From bokr at oz.net  Thu May  5 16:18:51 2005
From: bokr at oz.net (Bengt Richter)
Date: Thu, 05 May 2005 20:18:51 GMT
Subject: dictionary comparison
References: <1115306371.818120.150340@f14g2000cwb.googlegroups.com>
	<1115312393.514506.77600@z14g2000cwz.googlegroups.com>
	<1115313648.259509.80170@z14g2000cwz.googlegroups.com>
	<mailman.51.1115314647.29826.python-list@python.org>
Message-ID: <427a7d55.759748160@news.oz.net>

On Thu, 5 May 2005 10:37:23 -0700, James Stroud <jstroud at mbi.ucla.edu> wrote:
[...]
We had the same impulse ;-)
(see my other post in this thread)
>
># use patch as value and version as key
??? seems the other way around (as it should be?)

>recc_dct = dict([x.split("-") for x in recc_ary])
>serv_dct = dict([x.split("-") for x in serv_ary])
>
But what about multiple revs for the same patch?

Regards,
Bengt Richter


From rbt at athop1.ath.vt.edu  Tue May 17 14:37:19 2005
From: rbt at athop1.ath.vt.edu (rbt)
Date: Tue, 17 May 2005 14:37:19 -0400
Subject: os.popen vs os.system
In-Reply-To: <DN2dnbQrn7HQqhffRVn-vg@powergate.ca>
References: <d6dasg$32r$1@solaris.cc.vt.edu>
	<DN2dnbQrn7HQqhffRVn-vg@powergate.ca>
Message-ID: <d6ddkv$79a$3@solaris.cc.vt.edu>

Peter Hansen wrote:
> I don't think there's any significant difference between the above 
> (assuming you add in the missing quotation marks) and 
> os.system('shutdown -r -f'), except that the os.system() approach is 
> shorter and more readable if you are simply discarding or printing the 
> output like that.

Thanks Peter!


From michele.simionato at gmail.com  Tue May 10 12:48:48 2005
From: michele.simionato at gmail.com (Michele Simionato)
Date: 10 May 2005 09:48:48 -0700
Subject: object oriented inheritance problem
In-Reply-To: <d5qo62$l2o$1@vegh.ks.cc.utah.edu>
References: <d5qo62$l2o$1@vegh.ks.cc.utah.edu>
Message-ID: <1115743728.589084.226280@f14g2000cwb.googlegroups.com>

It looks like ElementTree is a module and not a class.
The same error message was posted here few weeks ago.
Actually, I discuss it in my Oxford lectures, page 30:
see
http://www.reportlab.org/~andy/accu2005/pyuk2005_simionato_wondersofpython.zip

(there also everything you want to know about new-style
classes and more).

               Michele Simionato



From peter at engcorp.com  Mon May 30 21:37:06 2005
From: peter at engcorp.com (Peter Hansen)
Date: Mon, 30 May 2005 21:37:06 -0400
Subject: Case Sensitive, Multiline Comments
In-Reply-To: <mailman.263.1117494053.18027.python-list@python.org>
References: <1117137316.140791.210430@g14g2000cwa.googlegroups.com>	<z5adnQMsOLiL7AffRVn-hQ@comcast.com>	<mailman.256.1117477669.18027.python-list@python.org>	<d7fpbl$b1s$1@wake.carmen.se>	<mailman.261.1117484784.18027.python-list@python.org>	<W5Lme.105911$Wl2.6373476@phobos.telenet-ops.be>
	<mailman.263.1117494053.18027.python-list@python.org>
Message-ID: <eZKdnYv_9et0IgbfRVn-pQ@powergate.ca>

Benji York wrote:
> Roel Schroeven wrote:
>  > You haven't looked very well though: there are actually quite a lot
>  > of extra spaces. Still, it's nicely done indeed.
> 
> Hmm.  I only saw doubled spaces after commas and periods.  That's
> fairly standard practice, for the periods at least.  I don't know
> if people regularly put two spaces after commas though.  I know I
> don't.  I did spot a couple of extra quotation marks, but I guess
> I can give him those. :)

Doubled spaces after commas are definitely not standard usage.

Doubled spaces after periods are fairly common (a holdover from 
fixed-pitch typewriters, as I recall, where the period itself takes up a 
full character width and so needs doubled space after it to make the 
sentence breaks more noticeable).

Inconsistent use of doubled spaces after periods, however, is a sign of 
a smart justification algorithm.  <wink>

-Peter


From david.tolpin at gmail.com  Thu May 12 17:04:26 2005
From: david.tolpin at gmail.com (david.tolpin at gmail.com)
Date: 12 May 2005 14:04:26 -0700
Subject: Python features
In-Reply-To: <mailman.162.1115539371.29826.python-list@python.org>
References: <1115536911.106882.166230@z14g2000cwz.googlegroups.com>
	<mailman.162.1115539371.29826.python-list@python.org>
Message-ID: <1115931866.889536.127870@o13g2000cwo.googlegroups.com>

> There are three main types of programming languages.
>
>      * Imperative
>      * Functional
>      * Declarative
>

animals are divided into:

* those that belong to the Emperor,
* embalmed ones,
* those that are trained,
* suckling pigs,
* mermaids,
* fabulous ones,
* stray dogs,
* those included in the present classification,
* those that tremble as if they were mad,
* innumerable ones,
* those drawn with a very fine camelhair brush,
* others,
* those that have just broken a flower vase,
* those that from a long way off look like flies.



From greg at cosc.canterbury.ac.nz  Fri May 13 01:33:22 2005
From: greg at cosc.canterbury.ac.nz (Greg Ewing)
Date: Fri, 13 May 2005 17:33:22 +1200
Subject: Python Documentation (should be better?)
In-Reply-To: <mailman.398.1115843305.29826.python-list@python.org>
References: <5C99C308457E6D4EA5448EA52A66004A675A6E@or.mxim.com>	<17026.26789.592527.975821@montanaro.dyndns.org>
	<mailman.398.1115843305.29826.python-list@python.org>
Message-ID: <3eishfF3d6ujU1@individual.net>

Ivan Van Laningham wrote:
> Hi All--
> The Python docs are not ideal.  I can never remember, for instance,
> where to find string methods (not methods in the string module, but
> methods with '')

Curiously I had the same problem just the other day,
except with list instead of string. I think the problem
is that the sections on the actual built-in types
(list, str, dict, etc.) are one level too far down
to appear in the table of contents of the Library
Reference.

If things could be rearranged so that their names
actually appeared in the table of contents, I think
it would make a big difference in this area.

-- 
Greg Ewing, Computer Science Dept,
University of Canterbury,	
Christchurch, New Zealand
http://www.cosc.canterbury.ac.nz/~greg


From bill.mill at gmail.com  Wed May 11 09:12:13 2005
From: bill.mill at gmail.com (Bill Mill)
Date: Wed, 11 May 2005 09:12:13 -0400
Subject: Python Graphing Utilities.
In-Reply-To: <87mzr2f01r.fsf@wilson.rwth-aachen.de>
References: <-dadnS0X7IVccR3fRVn-uQ@entouch.net>
	<797fe3d405051010392c00011f@mail.gmail.com>
	<mailman.320.1115772826.29826.python-list@python.org>
	<87psvycqej.fsf@wilson.rwth-aachen.de>
	<mailman.340.1115812092.29826.python-list@python.org>
	<87mzr2f01r.fsf@wilson.rwth-aachen.de>
Message-ID: <797fe3d4050511061258bb8302@mail.gmail.com>

On 5/11/05, Torsten Bronger <bronger at physik.rwth-aachen.de> wrote:
> Hall?chen!
> 
> Bill Mill <bill.mill at gmail.com> writes:
> 
> > On 5/11/05, Torsten Bronger <bronger at physik.rwth-aachen.de> wrote:
> >
> >> Fernando Perez <fperez.net at gmail.com> writes:
> >>
> >>> [...]
> >>>
> >>> [...]  Matplotlib is very good, has an active development
> >>> community, and it is designed from the ground up not only as a
> >>> library for rendering plots to screen/disk, but also for
> >>> embedding into guis (with support for Tk, WX, GTK, QT and FLTK).
> >>
> >> Why not for Gnuplot, by the way?
> >>
> >> On sceen, matplotlib looks extremely good, however, I still need
> >> Gnuplot for the hardcopy version[*].  It *seems* to me that the
> >> programming interfaces are quite different, so a Gnuplot backend
> >> for matplotlib would be helpful for me.
> >
> > By hardcopy version, I assume you mean Postscript?
> 
> Not really.  Gnuplot's output is LaTeX with a couple of native
> Postscript directives inbetween.  It's inluded into my document with
> "\input plot.plt" rather than "\includegraphics{plot.eps}".
> 
> I mentioned the advantages of this approach in the footnote:
> 

Tha's cool, I saw what you wrote. First off, I wasn't sure what you
meant by "hardcopy", so I thought I'd let you know that matplotlib has
PS output. Second, the page I linked to talks about all the font-type
features of matplotlib, which I thought might interest you. Having not
gotten funky with them, I cannot vouch for their quality.

Peace
Bill Mill
bill.mill at gmail.com


From anton.vredegoor at gmail.com  Thu May 26 10:08:49 2005
From: anton.vredegoor at gmail.com (Anton Vredegoor)
Date: 26 May 2005 07:08:49 -0700
Subject: first release of PyPy
In-Reply-To: <mailman.68.1116961629.18027.python-list@python.org>
References: <mailman.264.1116625088.8733.python-list@python.org>
	<1116629407.638782.145950@g47g2000cwa.googlegroups.com>
	<mailman.9.1116831944.18027.python-list@python.org>
	<d6sn2f$18d$1@news.doit.wisc.edu>
	<mailman.29.1116868886.18027.python-list@python.org>
	<1116880764.260884.286720@g49g2000cwa.googlegroups.com>
	<42934634.5060105@gmx.de>
	<b322b4e605052411071a5c2606@mail.gmail.com>
	<mailman.68.1116961629.18027.python-list@python.org>
Message-ID: <1117116529.063166.286590@g43g2000cwa.googlegroups.com>

Carl Friedrich Bolz wrote:

> Rumors have it that the secret goal is being faster-than-C which is
> nonsense, isn't it?

Maybe not. If one can call functions from a system dll (a la ctypes,
some other poster already mentioned there was some investigation in
this area) one can skip a layer of the hierarchy (remove the c-coded
middleman!) and this would possibly result in faster code.

I'm not involved in PyPy myself but this would seem a logical
possibility. To go a step further, if the compiler somehow would know
about the shortest machine code sequence which would produce the
desired effect then there would be no reason to limit onself to only
those relatively inefficent standard code sequences that are inside
system dll's.

Just design specific optimized dll's on the fly :-)

(Now going into turbo overdive) One could have a central computer
checking which data transformations (at a polymorfic level) a specific
program is accomplishing and 'reengineer or restructure' the code
inductively to check whether some other coder already had 'said the
same thing' in 'better python code'. So one would get a warning when
reinventing the wheel even if one had invented a square one :-) or if
one had distributed functionality in an inefficent way. Next, after
standardizing the input code this way one could have a list of these
'frequently used standard sequences' memoized at the central location
in order to speed up the compilation phase. Of course the central
interpreter would be sensitive to local code history so this would ease
the code recognition process.

This would work like the way human attention works in that we recognize
the word 'wheel' sooner if we first saw a picture of a car. The only
problem with this approach seems to be that it looks like a straight
path to borghood ...

Anton

'resistance is futile, all your codes are belong to us!'



From garyr at fidalgo.net  Sun May  1 10:37:28 2005
From: garyr at fidalgo.net (garyr at fidalgo.net)
Date: 1 May 2005 07:37:28 -0700
Subject: tkMessageBox dialog help
References: <1179elj56ralk70@news.supernews.com>
Message-ID: <1114958248.889002.227250@o13g2000cwo.googlegroups.com>


Nathan wrote:
> Hi,
>
> I've been testing the standard dialog boxes in tkMessageBox under
IDLE.
> If I type for example, tkMessageBox.askyesno('test', 'test'), the
dialog box
> comes up fine but another window also appears. I'm guessing this is
the
> parent window of the message box. If I click on either of the yes/no
> buttons, i get a True/False on the std out and the dialog box closes
but the
> parent window remains and seems to hang. This is on WinXP by the way.
Is
> this normal behaviour? How do I get the dialog box appearing without
the
> parent window or is this not possible?
>
> Thanks,
> Nathan.

See the post to this NG by Jeff Epler on  Apr 12, Tkinter "withdraw"
and "askstring" problem

 I think you can find the answer to your question there.



From steven.bethard at gmail.com  Mon May 16 13:07:06 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Mon, 16 May 2005 11:07:06 -0600
Subject: Applying a function to a 2-D numarray
In-Reply-To: <nb7h81hqrgbd2kofg48tlt8oaicv34iuh9@4ax.com>
References: <nb7h81hqrgbd2kofg48tlt8oaicv34iuh9@4ax.com>
Message-ID: <I_Sdnfv3isSrThXfRVn-vQ@comcast.com>

Matt Feinstein wrote:
> Is there an optimal way to apply a function to the elements of a two-d
> array?
> 
> What I'd like to do is define some function:
> 
> def plone(x):
>      return x+1
> 
> and then apply it elementwise to a 2-D numarray. I intend to treat the
> function as a variable, so ufuncs are probably not appropriate-- I
> realize that  what I'm looking for won't be terrifically efficient,
> but I'd like to avoid doing it in the -worst- possible way.
> 
> Some things I've looked at include things like
> 
> def applyfun(m,f):
>      elist = [f(e) for e in m]
>      return reshape(elist,m.shape)
> 
> however, I can see that this looks neat but probably generates several
> copies of the array, which is not so neat.
> 
> Is there a better way?

I must be missing something, because the simplest possible thing seems 
to work for me:

py> import numarray as na
py> def plus1(arr):
...     return arr + 1
...
py> def apply_func(arr, f):
...     return f(arr)
...
py> a = na.arange(20, shape=(4, 5))
py> a
array([[ 0,  1,  2,  3,  4],
        [ 5,  6,  7,  8,  9],
        [10, 11, 12, 13, 14],
        [15, 16, 17, 18, 19]])
py> apply_func(a, plus1)
array([[ 1,  2,  3,  4,  5],
        [ 6,  7,  8,  9, 10],
        [11, 12, 13, 14, 15],
        [16, 17, 18, 19, 20]])

Is this not what you wanted?

STeVe


From miles_f at yahoo.com  Fri May  6 12:37:06 2005
From: miles_f at yahoo.com (Miles)
Date: Fri, 06 May 2005 09:37:06 -0700
Subject: a cx_Oracle ORA-01036 problem
In-Reply-To: <427a2b39_2@x-privat.org>
References: <427a2b39_2@x-privat.org>
Message-ID: <IjNee.33$r04.32@news.oracle.com>

Damjan wrote:
> I'm using Python 2.4, cx_Oracle-4.1 on Linux with Oracle instant client
> 10.1.0.3. This is the sql string:
> 
> SQL = """insert into D.D_NOTIFY values (:CARDREF, :BANKKEY, :OK1, :OK2 \
>         :DEBTEUR, :DEBTDEN, to_date(:INVOICE_DATE,'DD.MM.YY'),
>         to_date(:PAYMENT_DEADLINE,'DD.MM.YY'), :POINTS)"""
> 
> And I'm trying to execute it as:
>         c = db.cursor()
>         c.execute(SQL, CARDREF=id, BANKKEY=dc_kluc, OK1=okd, OK2=okc,                   
>           DEBTEUR=iznos_eur, DEBTDEN=iznos_mkd, INVOICE_DATE=datum_g,           
>           PAYMENT_DEADLINE=datum_d, POINTS=bodovi)
> 
> And I get an ORA-01036 exception.

Try using a variable name other than "id" for the CARDREF variable... say
"card_id".  id is a built in function name; I suspect your problem may be
that you are assiging that function to the variable rather than your intended
value...


Miles


From powderkeg at snow.email.ne.jp  Tue May 31 02:40:23 2005
From: powderkeg at snow.email.ne.jp (Mark Sargent)
Date: Tue, 31 May 2005 15:40:23 +0900
Subject: Newbie Here
Message-ID: <429C06D7.2080000@snow.email.ne.jp>

Hi All,

I'm taking the plunge into Python. I'm currently following this tutorial,
http://docs.python.org/tut/
I am not a programmer in general, although I've learnt a bit of bash 
scripting and some php/asp. I want to get into python to use it for 
Linux/Unix related stuff. A question I have, is, those of you who use it 
for the same things, what do you primarily use it for. Could you show me 
some examples.? I find the hardest thing with programming, is not 
remember the syntax/logic etc, but, when to use it. Perhaps that is also 
a personal thing, but, I'd love to see some basic examples out there. 
Cheers.

Mark Sargent.


From bdesth.quelquechose at free.quelquepart.fr  Thu May 26 18:02:36 2005
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Fri, 27 May 2005 00:02:36 +0200
Subject: Self-modifying Code
In-Reply-To: <pan.2005.05.22.08.01.37.760790@REMOVETHIScyber.com.au>
References: <1116522647.227661.99290@g43g2000cwa.googlegroups.com>
	<428cedeb$0$25015$8fcfb975@news.wanadoo.fr>
	<pan.2005.05.22.08.01.37.760790@REMOVETHIScyber.com.au>
Message-ID: <42964247$0$8026$626a14ce@news.free.fr>

Steven D'Aprano a ?crit :
(snip)
> Having said that, here is a good example of self-modifying code:
> 
> http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/68429
> 
> The RingBuffer class dynamically modifies itself once it is full so that
> its behaviour changes.
> 

This is nothing more than a pythonic implementation of the state 
pattern. I would not call this "self-modifying code", since the code 
itself is not modified.



From drjonfox at gmail.com  Sun May 15 21:03:32 2005
From: drjonfox at gmail.com (drjonfox at gmail.com)
Date: 15 May 2005 18:03:32 -0700
Subject: PIGIP Meeting -- Python Interest Group In Princeton
Message-ID: <1116205412.579228.15170@g43g2000cwa.googlegroups.com>

PIGIP, the Python Interest Group In Princeton, NJ, USA will have
a meeting Monday night at 7 (May 15)  in the Lawrenceville, NJ library.


No formal topic is set tonight, but we will be reviewing some bits of
the standard library that are highlighted in the Python Tutorial.

Anyone with an interest in the Python language are encouraged to
attend, and no RSVP is required and there is no charge is required or
expected for attendence.

You can read more about PIGIP at http://www.pigip.org.

-- Jon R. Fox 
-- drjonfox at gmail.com



From ivanlan at pauahtun.org  Wed May 11 20:39:59 2005
From: ivanlan at pauahtun.org (Ivan Van Laningham)
Date: Wed, 11 May 2005 18:39:59 -0600
Subject: Python Documentation (should be better?)
References: <5C99C308457E6D4EA5448EA52A66004A675A6E@or.mxim.com>	<17026.26789.592527.975821@montanaro.dyndns.org>	<mailman.398.1115843305.29826.python-list@python.org>	<428276e8$0$318$626a14ce@news.free.fr>
	<mailman.411.1115854727.29826.python-list@python.org>
	<lvudnZwSQdrDAh_fRVn-sQ@comcast.com>
Message-ID: <4282A5DF.44C84B18@pauahtun.org>

Hi All--

Steven Bethard wrote:
> 
> Ivan Van Laningham wrote:
> > I should be able to type "string methods" into the text box,
> > push submit, and IT SHOULD HAND ME THE PAGE.  Not "Results 1 - 20 of
> > about 9,800 from www.python.org for string methods. (0.78 seconds)"
> 
> Regardless, assuming the right link is the first one, do I understand
> your complaint correctly as saying that you want Python to automatically
> pick the first link for you?  Do others agree with this complaint?  I
> imagine it wouldn't be that hard to add the equivalent of Google's "I'm
> Feeling Lucky" button beside the submit button if that would really help.
> 

No.  If I type "string methods" into the search box (OK, I will type the
quotes), how many pages can there be?  If there are two or more, give me
the choice; if there is one, take me to it.  Why are there 9,801 pages
containing string, or method, or both, or neither?  What's wrong with
this picture?

> http://docs.python.org/lib/string-methods.html
> 
> In fact, I tried just "string" and couldn't find anything but the
> current docs in the first 10 pages (and was too lazy to check anything
> else).
> 
> Could you tell me how to reproduce your results (of getting Python 2.1.3)?
> 

http://www.python.org/doc/

Type string methods into the box; push submit.  Result:

"Results 1 - 20 of about 9,800 from www.python.org for string methods.
(0.14 seconds)"

I did not go to docs.python.org, I went to www.python.org and clicked on
the doc link.  There is a difference, clearly, but I maintain there
should not be.  If I click on "Documentation" on the main page, am I
asking for "All possible old and new and broken and repaired and
intermediate documentation pages"?  No, I kind of thought I was asking
for the latest documentation.

I tried string methods at docs.python.org, and got "Results 1 - 20 of
about 455 from docs.python.org for string methods. (0.11 seconds)";
"string methods" retrieved "Results 1 - 10 of about 30 from
docs.python.org for "string methods". (0.13 seconds)".  Why the
difference?


Metta,
<i-have-not-yet-begun-to-rant>-ly y'rs,
Ivan "Sorry I am out of room for smiley faces"
----------------------------------------------
Ivan Van Laningham
God N Locomotive Works
http://www.pauahtun.org/
http://www.foretec.com/python/workshops/1998-11/proceedings.html
Army Signal Corps:  Cu Chi, Class of '70
Author:  Teach Yourself Python in 24 Hours


From Please  Mon May  2 14:36:02 2005
From: Please (Please)
Date: 2 May 2005 13:36:02 -0500
Subject: =?ISO-8859-1?Q?Important_please_re?=
	=?ISO-8859-1?Q?ad_this_Thank_you_`?=
	=?ISO-8859-1?Q?=B0=BA=B7...=B7=BA=B0`=B0=BA=B7...=B7=BA=B0?=
	=?ISO-8859-1?Q?`=B0=BA=B7.=86..=B7=BA=B0`=B0=BA=B7...=B7?=
	=?ISO-8859-1?Q?=BA=B0`=B0=BA=B7..=B7=BA=B0`_`=B0=BA=B7..?=
	=?ISO-8859-1?Q?.=B7=BA=B0`=B0=BA=B7...=B7=BA=B0`=B0=BA=B7.?=
	=?ISO-8859-1?Q?=86..=B7=BA=B0`=B0=BA=B7...=B7=BA=B0`=B0=BA?=
	=?ISO-8859-1?Q?=B7..=B7=BA=B0`_`=B0=BA=B7...=B7=BA=B0`?=
	=?ISO-8859-1?Q?=B0=BA=B7...=B7=BA=B0`=B0=BA=B7.=86..=B7=BA?=
	=?ISO-8859-1?Q?=B0`=B0=BA=B7...=B7=BA=B0`=B0=BA=B7..=B7=BA?=
	=?ISO-8859-1?Q?=B0`_`=B0=BA=B7...=B7=BA=B0`=B0=BA=B7..?=
	=?ISO-8859-1?Q?.=B7=BA=B0`=B0=BA=B7.=86..=B7=BA=B0`=B0=BA=B7?=
	=?ISO-8859-1?Q?...=B7=BA=B0`=B0=BA=B7..=B7=BA=B0`_`=B0?=
	=?ISO-8859-1?Q?=BA=B7...=B7=BA=B0`=B0=BA=B7...=B7=BA=B0`?=
	=?ISO-8859-1?Q?=B0=BA=B7.=86..=B7=BA=B0`=B0=BA=B7...=B7=BA?=
	=?ISO-8859-1?Q?=B0`=B0=BA=B7..=B7=BA=B0`_`=B0=BA=B7...?=
	=?ISO-8859-1?Q?=B7=BA=B0`=B0=BA=B7...=B7=BA=B0`=B0=BA=B7.=86?=
	=?ISO-8859-1?Q?..=B7=BA=B0`=B0=BA=B7...=B7=BA=B0`=B0=BA=B7?=
	=?ISO-8859-1?Q?..=B7=BA=B0`_`=B0=BA=B7...=B7=BA=B0`=B0?=
	=?ISO-8859-1?Q?=BA=B7...=B7=BA=B0`=B0=BA=B7.=86..=B7=BA=B0?=
	=?ISO-8859-1?Q?`=B0=BA=B7...=B7=BA=B0`=B0=BA=B7..=B7=BA=B0?=
	=?ISO-8859-1?Q?`_`=B0=BA=B7...=B7=BA=B0`=B0=BA=B7...?=
	=?ISO-8859-1?Q?=B7=BA=B0`=B0=BA=B7.=86..=B7=BA=B0`=B0=BA=B7.?=
	=?ISO-8859-1?Q?..=B7=BA=B0`=B0=BA=B7..=B7=BA=B0`_GOO?=
	=?ISO-8859-1?Q?GLE=B7NEWSGROUP=B7POST=B7?= =?ISO-8859-1?Q?155?=
References: <1115057865.662012.234170@z14g2000cwz.googlegroups.com>
Message-ID: <vksc71tersq4q36mhat943gk4e5p4seqvt@4ax.com>

Reports to groups-abuse at google.com, abuse at aol.net, domains at aol.net,
abuse at yahoo.com, abuse at yahoo-inc.com

And do not feed the troll!


From a at b.c  Thu May  5 11:15:12 2005
From: a at b.c (D H)
Date: Thu, 05 May 2005 10:15:12 -0500
Subject: How To Reply
In-Reply-To: <mailman.141.1115192187.6583.python-list@python.org>
References: <mailman.141.1115192187.6583.python-list@python.org>
Message-ID: <Av-dnbZ5u_TppeffRVn-vQ@comcast.com>

phil wrote:
> I get a digest several times a day.
> When I wish to respond to an item I must
> cut and paste the item and the subject line.
> Is there something to click on for a simple reply?
> Using an old mozilla mail.
> Thanks
> 

Perfectly valid question.
Add an nntp connection in mozilla mail (or thunderbird), and add the 
comp.lang.python group, or access the group via google groups.


From exarkun at divmod.com  Mon May  2 10:30:38 2005
From: exarkun at divmod.com (Jp Calderone)
Date: Mon, 02 May 2005 14:30:38 GMT
Subject: pop3proxy 
In-Reply-To: <4276329a$0$289$636a15ce@news.free.fr>
Message-ID: <20050502143038.15422.1402808994.divmod.quotient.13857@ohm>

On Mon, 02 May 2005 16:05:13 +0200, BrokenClock <brokenclock at free.fr> wrote:
>Hello every body,
>
>Here is a python newbie! I've choose it to make a pop3 proxy - I want to
>filter content between a pop3 client and a pop3 server, and I have no
>control on the server...
>First, I wanted to do an non-filtering, just logging, mono-thread proxy
>to make some test..
>Based on the RFC 1939 (http://www.faqs.org/rfcs/rfc1939.html) (in
>particular the item 5), I was expecting some output, but did not get it...
>In fact, I expected to see the message, but I did not see it... only the
>  command to retrieve it. On the other hand, the message is well receipt
>in my mail client.
>An other point is that all this seems to work well with short messages,
>but difficulties appear when messages go bigger. I think it is due to
>the parameter of recv, but I don't know how to set it.
>So here are my two questions:
>1-why do not I see the message in my output, and how could I do to see
>and handle it?
>2-how should I set the parameter of recv to handle big messages?

  Regardless of how large you set the parameter, you will still have to issue multiple recv() calls.  TCP is stream oriented, not packet oriented.  There are no guarantees about how many bytes recv() will return.  You may get the entire chunk of bytes written by your peer, or you may get a small fraction of them, or you may get two byte chunks written separately merged together.

  The only way to be sure you've received everything is to include logic in your application which can examine the bytes and determine based on the protocol whether or not more bytes should be coming.

  For this reason, you cannot simply recv() on one socket and then send() on the next, alternating.  You need some actual POP3 logic to determine whether a recv() returned all the expected bytes, or whether you need to recv() on the same socket again.

  Another approach is to use non-blocking sockets, select(), and issue a recv() on either socket whenever select() indicates there are bytes to be read.  This is the approach taken by various libraries, including asyncore in the stdlib, as well as by Twisted.  As a bonus, Twisted (<http://www.twistedmatrix.com>) also includes client and server POP3 protocol implementations.

>
>Any help would we very appreciate.
>
>Cheers,
>
>Brokenclock
>
>Here is the code:
> >
>import socket
>
>LOCALHOST = '192.168.31.202'		# This is me
>REMOTEHOST = 'pop.fr.oleane.com'	# The remote host
>PORT = 110				# pop3 port
>while 1:
>	SocketServer = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
>	SocketServer.bind((LOCALHOST, PORT))
>	SocketServer.listen(1)
>	Connexion2Client, ClientAddress = SocketServer.accept()
>	print '#', ClientAddress,' connected'
>	ClientSocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
>	ClientSocket.connect((REMOTEHOST, PORT))
>	print '#', REMOTEHOST, ' connected'
>	while 1:
>		DataFromServer = ClientSocket.recv(5896230)
>		print REMOTEHOST,'> ',DataFromServer

>		Connexion2Client.send(DataFromServer)

  You can't just call send() like this.  It may not write all the bytes you pass it.  It will return the number of bytes written, and you must then call send again with the remaining bytes (and again test the return value, etc).

>		DataFromClient = Connexion2Client.recv(5896230)
>		print ClientAddress,'> ',DataFromClient
>		if DataFromClient==" QUIT": print 'QUIT received from client'

  Since you may receive "Q", "U", "I", and "T" in separate recv() results, the above will not work reliably.  You will need to buffer bytes and test for the presence of QUIT in the buffer.  Additionally, you need to maintain information about the state of connection, since "QUIT" is perfectly legitimate as part of a message body and should not be interpreted the same as a QUIT outside a message body.

>		ClientSocket.send(DataFromClient)

  Same comments about send() as above.

>		if not DataFromClient: break
>	ClientSocket.close()
>	Connexion2Client.close()
> >eof
>
>
> [snip output]

  Jp


From peter at engcorp.com  Sat May  7 15:20:58 2005
From: peter at engcorp.com (Peter Hansen)
Date: Sat, 07 May 2005 15:20:58 -0400
Subject: win32- system call - getting results back into python
In-Reply-To: <1115487237.888185.311230@o13g2000cwo.googlegroups.com>
References: <1115487237.888185.311230@o13g2000cwo.googlegroups.com>
Message-ID: <_qidnWtAidTqiODfRVn-vQ@powergate.ca>

gregpinero at gmail.com wrote:
> I'm trying to call a system command "svnlook log \arms" from within
> python and process the results.  However I'm having trouble getting the
> results of the command back into python.  I'm using windows if that
> matters.

As "runes" pointed out, you are getting caught by the \a escape sequence.

A better solution in this particular case is to see that the SVN 
utilities all understand forward slashes just fine, so you can use 
"svnlook log /arms" and it should work.

Note that there is also a Python library that wraps the SVN interface so 
you could also skip the direct calls to svnlook and do this with Python 
calls instead.  Google for "pysvn" for more.

-Peter


From timothy at open-networks.net  Thu May  5 22:35:20 2005
From: timothy at open-networks.net (Timothy Smith)
Date: Fri, 06 May 2005 12:35:20 +1000
Subject: py2exe + svn - the final drama
Message-ID: <427AD7E8.1060500@open-networks.net>

ok, i am updating my program from my svn - this works, however, i am 
getting the following error when i close the program. the zip file 
successfully updates, so i'm curious as to the meaning of this.

Traceback (most recent call last):
  File "Main.pyo", line 820, in ValidateLogin
  File "Main.pyo", line 863, in ShowMainFrameItems
  File "glob.pyo", line 22, in glob
  File "glob.pyo", line 50, in glob1
  File "fnmatch.pyo", line 42, in filter
zipimport.ZipImportError: bad local file header in Z:\temp\library.zip

not that once i have finished client.update(''), it has successfully 
updated the zipfile, i open a dialoge box saying "click ok and restart 
program" AFTER i click on the above error pops up and my app shuts down 
as intended.

ideas?


From jasondrew72 at gmail.com  Fri May 20 09:47:25 2005
From: jasondrew72 at gmail.com (Jason Drew)
Date: 20 May 2005 06:47:25 -0700
Subject: Convert from numbers to letters
In-Reply-To: <1116541217.303770.314860@f14g2000cwb.googlegroups.com>
References: <1116511005.900715.107260@o13g2000cwo.googlegroups.com>
	<1116519193.037429.93560@o13g2000cwo.googlegroups.com>
	<1116529140.470352.129690@z14g2000cwz.googlegroups.com>
	<mailman.224.1116530388.8733.python-list@python.org>
	<1116535087.901874.167870@g43g2000cwa.googlegroups.com>
	<1116541217.303770.314860@f14g2000cwb.googlegroups.com>
Message-ID: <1116596845.792019.40340@g14g2000cwa.googlegroups.com>

Er, yes! It's REALLY ugly! I was joking (though it works)! I retract it
from the code universe. (But patent pending nr. 4040404.)

Here's how I really would convert your (row_from_zero, col_from_zero)
tuple to spreadsheet "A1" coords, in very simple and easy to read code.

##def tuple2coord(tupl):
##    def colnr2digraph(colnr):
##        if colnr <= 26:
##            return chr(ord('A') + colnr-1)
##        m = colnr % 26
##        if m == 0:
##            m = 26
##        h = (colnr - m) / 26
##        return colnr2digraph(h) + colnr2digraph(m)
##
##    rowfromzero, colfromzero = tupl
##    row = rowfromzero+1
##    col = colfromzero+1
##    return colnr2digraph(col) + str(row)
##
##print tuple2coord((13,702))
### gives AAA14
### (because the tuple counts rows and columns from zero)

Note that this allows column nrs of any size, not just up to "ZZ". If
you really know the column limit is ZZ, then a lookup dictionary would
be a more efficient speed-wise solution. (Though I'd still use my nice
recursive no-brainer colnr2digraph function to populate the
dictionary.)

P.S. the line that says
h = (colnr - m) / 26
could really, in current Python, be just
h = colnr / 26
but the former is more language- and future-neutral.



From kent37 at tds.net  Tue May 24 05:55:18 2005
From: kent37 at tds.net (Kent Johnson)
Date: Tue, 24 May 2005 05:55:18 -0400
Subject: searching substrings with interpositions
In-Reply-To: <1116926253.186047.195260@g43g2000cwa.googlegroups.com>
References: <1116926253.186047.195260@g43g2000cwa.googlegroups.com>
Message-ID: <4292fa03$1_1@newspeer2.tds.net>

borges2003xx at yahoo.it wrote:
> hi everyone.
> a problem:
> two binary strings, a="0101" b="000011110100";
> i search a function f(a,b) that gives 1 if a is "contained" in b with
> any sub strings interposed.
> in this example a in contained cause 000<01>111<01>00 but also
> 0<0>001111<101>00"
>  but also <0>0001111<101>00 but also 000<0>1111<01>0<0> etc....
> any idea?
> Thanx in advance.
> Giorgi Borghi

You can do this easily with regular expressions though I guess may be poor with long strings:
  >>> import re
  >>> re.search('0.*1.*0.*1', '000011110100')
<_sre.SRE_Match object at 0x008D9BF0>
  >>> _.span()
(0, 10)
Put the chars of the search string in groups if you need to know where they were found.

Kent


From tismer at stackless.com  Sat May 21 20:47:23 2005
From: tismer at stackless.com (Christian Tismer)
Date: Sun, 22 May 2005 02:47:23 +0200
Subject: first release of PyPy
In-Reply-To: <du7hdgxt4th.fsf@amadeus.cc.tut.fi>
References: <mailman.264.1116625088.8733.python-list@python.org>	<1116629407.638782.145950@g47g2000cwa.googlegroups.com>	<1116644536.741250.249860@g44g2000cwa.googlegroups.com>	<mailman.279.1116649250.8733.python-list@python.org>	<1116653460.808204.74460@g43g2000cwa.googlegroups.com>	<87mzqpytep.fsf@wilson.rwth-aachen.de>	<7xfywhxerd.fsf@ruckus.brouhaha.com>	<87is1dyru8.fsf@wilson.rwth-aachen.de>
	<du7hdgxt4th.fsf@amadeus.cc.tut.fi>
Message-ID: <428FD69B.7010502@stackless.com>

Ville Vainio wrote:

>>>>>>"Torsten" == Torsten Bronger <bronger at physik.rwth-aachen.de> writes:
> 
> 
>     Torsten> What's supposed to be compiled?  Only PyPy itself or also
>     Torsten> the programs it's "interpreting"?
> 
> PyPy is written in python, if it can be compiled then the programs can
> be as well.

Well, this is not really true. PyPy is written in RPython,
a sub-language of Python that is implicitly defined by
"simple and static enough to be compilable".

We have not yet started to work on the dynamic nature of
Python, that needs different technology (Psyco).

>     Torsten> I've been told by so many books and on-line material that
>     Torsten> Python cannot be compiled (unless you cheat).  So how is
>     Torsten> this possible?
> 
> These guys are exploring a new territory. OTOH, Lisp is a dynamic
> language like python and it can be compiled to native code. Pyrex
> demonstrates the "trivial" way to compile python to native code, the
> real problem is making the resulting code fast. Typically this
> requires type inference (i.e. figuring out the type of an object from
> the context because there are no type declarations) to avoid dict
> lookups in method dispatch.

Type inference works fine for our implementation of Python,
but it is in fact very limited for full-blown Python programs.
Yoou cannot do much more than to try to generate effective code
for the current situation that you see. But that's most often
quite fine.

-- 
Christian Tismer             :^)   <mailto:tismer at stackless.com>
tismerysoft GmbH             :     Have a break! Take a ride on Python's
Johannes-Niemeyer-Weg 9A     :    *Starship* http://starship.python.net/
14109 Berlin                 :     PGP key -> http://wwwkeys.pgp.net/
work +49 30 802 86 56  mobile +49 173 24 18 776  fax +49 30 80 90 57 05
PGP 0x57F3BF04       9064 F4E1 D754 C2FF 1619  305B C09C 5A3B 57F3 BF04
      whom do you want to sponsor today?   http://www.stackless.com/


From klaus at seistrup.dk  Wed May 11 06:14:25 2005
From: klaus at seistrup.dk (Klaus Alexander Seistrup)
Date: Wed, 11 May 2005 10:14:25 +0000 (UTC)
Subject: Reading files into a 2D list.
References: <mailman.332.1115804363.29826.python-list@python.org>
Message-ID: <slrnd83mo1.l4q.klaus@main.szn.dk>

?yvind ?stlund wrote:

> I have a list of about 20 files that I want to read line by
> line into a 2D list. So the first dimension will be each file,
> and the second every line in that file.
>
> I tried to do something like this:
>
>     files_and_lines = [][]
>     filenumber = 0
>     
>     for files in file_names:
>         try:
>             lexi_file = open(str(sys.path[0]) + "/lexi/" + files, "r")
>             files_and_lines[filenumber] = lexi_file.readlines()
>             filenumber = filenumber + 1
>
>         except(IOError):
>             print "Something went wrong trying to read the file:"
>             print "'" + str(sys.path[0]) + files + "'"

I'm not sure I understand you.  Do you wish to end up with an array 
like this:

#v+

    [fileName0][fileLines0]
    [fileName1][fileLines1]
      ...
    [fileNameN][fileLinesN]

#v-

In that case try something like:

#v+

>>> files_and_lines = []
>>> for name in file_names:
>>>     files_and_lines.append([name, open(name, 'r').readlines()])
>>> print 'Read %d files' % (len(files_and_lines),)

#v-

Add proper error checking.

At least, I think the [].append() method is what you're looking for.

Cheers,

-- 
Klaus Alexander Seistrup
Magnetic Ink, Copenhagen, Denmark
http://magnetic-ink.dk/


From phillip.watts at anvilcom.com  Thu May 12 17:28:39 2005
From: phillip.watts at anvilcom.com (phil)
Date: Thu, 12 May 2005 16:28:39 -0500
Subject: TAKE_FOCUS
References: <428229E6.4040900@anvilcom.com> <d5vc7d$eh3$1@sea.gmane.org>
Message-ID: <4283CA87.7090107@anvilcom.com>


Thanks, works great.


>>I have a function I need to run when the window
>>gets the focus. How do you do that in Tkinter
>>on Win32?
>>
> 
> binding the <FocusIn> event should work.
> 
> (and make sure that the takefocus option is set)




From sarapythonlist at yahoo.com  Tue May 10 05:36:20 2005
From: sarapythonlist at yahoo.com (Sara Khalatbari)
Date: Tue, 10 May 2005 02:36:20 -0700 (PDT)
Subject: A Module on Time & Date
Message-ID: <20050510093620.35902.qmail@web61108.mail.yahoo.com>

Is there a Module in Python that gives you the time &
date of today???



		
__________________________________ 
Do you Yahoo!? 
Make Yahoo! your home page 
http://www.yahoo.com/r/hs


From foo at bar.org  Wed May 11 05:20:40 2005
From: foo at bar.org (stasz)
Date: Wed, 11 May 2005 11:20:40 +0200
Subject: A Faster Way...
References: <mailman.297.1115744017.29826.python-list@python.org>
	<slrnd82cms.2fg.klaus@main.szn.dk>
	<1115773887.690435.19590@f14g2000cwb.googlegroups.com>
Message-ID: <pan.2005.05.11.09.20.37.441308@bar.org>

On Tue, 10 May 2005 18:11:27 -0700, gene.tani wrote:

> hmm, there's lots of ways, huh?  you can use itertools.zip instead of
> builtin zip, or do:
> 
>  map(None, list1, list2)
Not!
One should try a possible solution first,
>>> l1 = range(10)
>>> l2 = range(10,20)
>>> l1
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
>>> l2
[10, 11, 12, 13, 14, 15, 16, 17, 18, 19]
>>> map(None,l1,l2)
[(0, 10), (1, 11), (2, 12), (3, 13), (4, 14), (5, 15), (6, 16), (7, 17), (8, 18), (9, 19)]
>>> 

Stas



From mefjr75 at hotmail.com  Mon May 16 03:23:44 2005
From: mefjr75 at hotmail.com (M.E.Farmer)
Date: 16 May 2005 00:23:44 -0700
Subject: string.lstrip stripping too much?
In-Reply-To: <roy-067EC1.13410715052005@reader1.panix.com>
References: <mailman.26.1116176368.15315.python-list@python.org>
	<roy-067EC1.13410715052005@reader1.panix.com>
Message-ID: <1116228224.057260.79930@g47g2000cwa.googlegroups.com>

Roy Smith:
> I suspect what you really want to be doing is using the os.path
module.
> It's got functions for tearing pathnames apart into components, and
hides
> all the uglyness like whether / or \ is the directory separator on
your
> particular system.


I thought so too, maybe this will help.
>>> d = 'D:\\music\\D\\Daniel Lanois\\For the beauty of Wynona'
>>> import os
>>> os.path.split(d)
('D:\\music\\D\\Daniel Lanois', 'For the beauty of Wynona')
>>> os.path.basename(d)
'For the beauty of Wynona'
>>> os.path.dirname(d)
'D:\\music\\D\\Daniel Lanois'
>>> os.path.splitext(d)
('D:\\music\\D\\Daniel Lanois\\For the beauty of Wynona', '')
>>> os.path.splitdrive(d)
('D:', '\\music\\D\\Daniel Lanois\\For the beauty of Wynona')
>>> os.path.split(d)
('D:\\music\\D\\Daniel Lanois', 'For the beauty of Wynona')
>>> q = os.path.split(d)
>>> q
('D:\\music\\D\\Daniel Lanois', 'For the beauty of Wynona')
>>> q = os.path.split(q[0])
>>> q
('D:\\music\\D', 'Daniel Lanois')
>>> q = os.path.split(q[0])
>>> q
('D:\\music', 'D')

And another idea might be to do a split using os.sep:
>>> import os
>>> d = 'D:\\music\\D\\Daniel Lanois\\For the beauty of Wynona'
>>> d.split(os.sep)
['D:', 'music', 'D', 'Daniel Lanois', 'For the beauty of Wynona']

Hth,
M.E.Farmer



From flamesrock at gmail.com  Tue May 10 20:05:47 2005
From: flamesrock at gmail.com (flamesrock)
Date: 10 May 2005 17:05:47 -0700
Subject: windows directories for curr user
Message-ID: <1115769947.020454.170340@f14g2000cwb.googlegroups.com>

Hi,

Short, maybe newbish question: Is there a python method for finding out
who the current user is in the OS module?

On older windows machines the directory I'm interested in is just
"c://my documents", but how do I walk to the current users my documents
folder?

-thanks



From joerg.schuster at gmail.com  Wed May 25 07:38:34 2005
From: joerg.schuster at gmail.com (Joerg Schuster)
Date: 25 May 2005 04:38:34 -0700
Subject: open file in dir independently of operating system
Message-ID: <1117021114.316734.117480@o13g2000cwo.googlegroups.com>

Hello,


I want to open the file 'configuration.smo' that is in directory dir.
Yet, I don't know on which os my program is being run. On Unix I would
say:

f = open(dir + '/configuration.smo', 'r')

What is the os-independent version of this line?

(I have read the manual of the module os, but I didn't see how to do
it.)


J?rg Schuster



From mage at mage.hu  Fri May 27 08:09:54 2005
From: mage at mage.hu (Mage)
Date: Fri, 27 May 2005 14:09:54 +0200
Subject: Strings for a newbie
In-Reply-To: <d7726f$fdg$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
References: <d7726f$fdg$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
Message-ID: <42970E12.7060903@mage.hu>

Malcolm Wooden wrote:

>In RB it would be simple:
>
>Dim s as string
>Dim a(-1) as string
>Dim i as integer
>
>s = "This is a sentence of words"
>For i = 1 to CountFields(s," ")
>  a.append NthField(s," ",i)
>next
>
>That's it an array a() containing the words of the sentence.
>
>Now can I see how this is done in Python? - nope!
>  
>

s = "This is a sentence of words"
print s.split(' ')

	Mage




From peter at engcorp.com  Wed May 25 10:14:27 2005
From: peter at engcorp.com (Peter Hansen)
Date: Wed, 25 May 2005 10:14:27 -0400
Subject: uploading files to a webdav SSL enabled server
In-Reply-To: <d720om$3cr$1@solaris.cc.vt.edu>
References: <d720om$3cr$1@solaris.cc.vt.edu>
Message-ID: <PvidnQAYoaD7FQnfRVn-hw@powergate.ca>

rbt wrote:
> Has anyone used pure python to upload files to a webdav server over SSL? 

We were not using SSL at the time (since it wasn't supported in standard 
Python, as I recall), but we successfully used the webdav client that 
was part of Zope a few years ago.  I suspect you could adapt it to use 
the new SSL support relatively easily.  Check back for version 2.4 or so 
if you can't find it in the latest Zopes. (I haven't looked at Zope for 
a few years now, so I don't know whether it's still included.)

-Peter


From magicmas at spymac.com  Sat May 28 13:14:44 2005
From: magicmas at spymac.com (cheng)
Date: 28 May 2005 10:14:44 -0700
Subject: a dict problem
Message-ID: <1117300484.637674.97430@f14g2000cwb.googlegroups.com>

hi all..it a problem about dict:

print target, dict[target]

get output:

keyword
{page3.html, page2.html, page1.html}

is it some ways to change it to:

keyword
{page1.html, page2.html, page3.html}



From griebel at konzept-is.de  Tue May  3 06:41:45 2005
From: griebel at konzept-is.de (Dr. Peer Griebel)
Date: Tue, 03 May 2005 12:41:45 +0200
Subject: Working with method-wrapper objects
In-Reply-To: <4272274e.213437757@news.oz.net>
References: <1830947848@web.de>	<mailman.4.1114734744.14961.python-list@python.org>
	<4272274e.213437757@news.oz.net>
Message-ID: <42775569.4080309@konzept-is.de>

Bengt Richter wrote:
> On Thu, 28 Apr 2005 11:33:04 +0200, "Dr. Peer Griebel" <griebel at konzept-is.de> wrote:
> 
> 
>>Peer Dr. Griebel wrote:
> 
> [..]
> 
>>>Why has [].__str__ a different type than object.__str__?
>>>Why is object.__str__ a routine while object().__str__ not?
> 
> Why wouldn't you expect different types? Those are different expressions.

Yes but for old style classes it's different (seems easier). For me the 
difference between bound and unbound methods are quite obvious. And I 
can easily work with these kind ob instances. (E.g. I know about im_self).

> If they were types and instances of your own making,
> like class Foo(object) and Foo(), wouldn't you expect
> a difference between Foo.method and Foo().method ?

Yes I expect differences in the implementation. But I did not expect 
these large difficulties (of mine) to work with new style classes. And 
as you have shown in your mail (thanks about it!) it is relatively tricky.

[..]

>>>And one again my question: Can I extract some more information about a
>>>methed-wrapper object. E.g. can I somehow determine the arg spec?
> 
> I believe it is a descriptor, and as such has at least a __get__ method,
> and to be callable itself, a __call__ method. I think the latter being a method wrapper
> probably effectively does wrapper.__get__(obj, type(obj))(*args, **kw)
> when you do wrapper.__call__(obj, *args, **kw)), which you do when you
> do wrapper(obj, your_args, your_keywords)
> 
> E.g., taking an ordinary class may show it more clearly:
> 
>  >>> class Foo(object):
>  ...    def m(self, *args, **kw): return self, args, kw
>  ...
>  >>> foo = Foo()
>  >>> type(foo).mro()
>  [<class '__main__.Foo'>, <type 'object'>]
>  >>> type(foo).mro()[0].__dict__
>  <dictproxy object at 0x02E8147C>
>  >>> type(foo).mro()[0].__dict__['m']
>  <function m at 0x02EE8D4C>
>  >>> type(foo).mro()[0].__dict__['m'].__get__
>  <method-wrapper object at 0x02EF1A6C>
>  >>> type(foo).mro()[0].__dict__['m'].__get__(foo, type(foo))
>  <bound method Foo.m of <__main__.Foo object at 0x02EF1BAC>>
>  >>> type(foo).mro()[0].__dict__['m'].__get__(foo, type(foo)).__call__
>  <method-wrapper object at 0x02EF1CAC>
>  >>> type(foo).mro()[0].__dict__['m'].__get__(foo, type(foo)).__call__('arg', k='keyword')
>  (<__main__.Foo object at 0x02EF1BAC>, ('arg',), {'k': 'keyword'})
> 
> Now you can try the same with inherited methods like __str__ that are built-in, e.g., substitute
> foo = [1, 2, 'this is a particular list instance'] and note similarities, if you realize what is a
> dscriptor and follow the same kind of logic to the final method call via __call__
> 
>  >>> foo = [1, 2, 'this is a particular list instance']
>  >>> type(foo).mro()
>  [<type 'list'>, <type 'object'>]
>  >>> type(foo).mro()[0].__dict__
>  <dictproxy object at 0x02E813EC>
>  >>> type(foo).mro()[0].__dict__['__str__']
>  Traceback (most recent call last):
>    File "<stdin>", line 1, in ?
>  KeyError: '__str__'
>  >>> type(foo).mro()[1].__dict__['__str__']
>  <slot wrapper '__str__' of 'object' objects>
>  >>> type(foo).mro()[1].__dict__['__str__'].__get__
>  <method-wrapper object at 0x02EF1AEC>
>  >>> type(foo).mro()[1].__dict__['__str__'].__get__(foo, type(foo))
>  <method-wrapper object at 0x02EF1BAC>
>  >>> type(foo).mro()[1].__dict__['__str__'].__get__(foo, type(foo)).__call__
>  <method-wrapper object at 0x02EF1D2C>
>  >>> type(foo).mro()[1].__dict__['__str__'].__get__(foo, type(foo)).__call__()
>  "[1, 2, 'this is a particular list instance']"

Sorry, I think you got me wrong: I would like to get information about 
the argspec itself as it is possible by using module inspect (for old 
style classes).

 >>> import inspect
 >>> def f(p, *q, **r): pass
...
 >>> inspect.getargspec(f)
(['p'], 'q', 'r', None)
 >>> inspect.getargspec([].__str__)
Traceback (most recent call last):
   File "<stdin>", line 1, in ?
   File "/usr/lib/python2.4/inspect.py", line 666, in getargspec
     raise TypeError('arg is not a Python function')
TypeError: arg is not a Python function

>>Isn't there anybody who has something to say about the issue?
>>
> 
> Ultimately you have to go into the code of ceval.c and object.c and typeobject.c
> etc to see what is really happening.

So there is no real (textual) documentation about it?

>>I think it's not only a problem with inspect. It is aproblem about old 
>>style classes vs. new style classes. It seems that the support for new 
>>style classes is not complete (yet).
>>
>>Some more investigation shows that also the module "types" is not 
>>universally usable. E.g. InstanceType is only usabel for instances of 
>>old classes. How do I test for instances of new classes?
> 
> 
> Not certain, but hasattr(inst, '__new__') might be close. And mnemonic ;-)
> 
> Regards,
> Bengt Richter

Are there any plans to enhace types.py and inspect.py to offer more 
support for new style classes?

As you can see, my knowledge is (not yet) good enough to work it out myself.

Thanks,
   Peer



From qwweeeit at yahoo.it  Thu May 19 13:58:01 2005
From: qwweeeit at yahoo.it (qwweeeit at yahoo.it)
Date: 19 May 2005 10:58:01 -0700
Subject: Convert from numbers to letters
In-Reply-To: <1116511005.900715.107260@o13g2000cwo.googlegroups.com>
References: <1116511005.900715.107260@o13g2000cwo.googlegroups.com>
Message-ID: <1116525481.639964.164890@o13g2000cwo.googlegroups.com>

Hi rh0dium,
Your  request gives me the opportunity of  showing a more realistic
example of the technique of "self-modification coding".
Although the coding is not as short as that suggested by the guys who
replayed to you, I think that it can be interesting....

# newVars.py
lCod=[]
for n in range(1,27):
.   lCod.append(chr(n+96)+'='+str(n)+'\n')
# other for-loops if you want define additional variables in sequence
(ex. aa,bb,cc etc...)
# write the variable definitions in the file "varDef.py"
fNewV=open('varDef.py','w')
fNewV.writelines(lCod)
fNewV.close()
from varDef import *
# ...
If you open the generated file (varDef.py) you can see all the variable
definitions, which are runned by "from varDef import *"
Bye.



From peter at engcorp.com  Fri May 27 18:35:47 2005
From: peter at engcorp.com (Peter Hansen)
Date: Fri, 27 May 2005 18:35:47 -0400
Subject: write to the same file from multiple processes at the same time?
In-Reply-To: <mailman.206.1117232893.18027.python-list@python.org>
References: <e3617$429713d7$3eb01f24$9096@news.flashnewsgroups.com>	<roy-29C1D4.09142527052005@reader1.panix.com>	<XOqdnU5dNq_vgwrfRVn-rg@powergate.ca>	<119ecss4o7co9ef@corp.supernews.com>	<ytSdnaFbdrq5BArfRVn-ig@powergate.ca>
	<mailman.206.1117232893.18027.python-list@python.org>
Message-ID: <fcednbWcccFKPQrfRVn-2w@powergate.ca>

Christopher Weimann wrote:
> On 05/27/2005-06:02PM, Peter Hansen wrote:
> 
>>Hmm... just tried it: you're right!  On the other hand, the results were 
>>unacceptable: each process has a separate file pointer, so it appears 
>>whichever one writes first will have its output overwritten by the 
>>second process.
> 
> Did you open the files for 'append' ? 

Nope.  I suppose that would be a rational thing to do for log files, 
wouldn't it?  I wonder what happens when one does that...

-Peter


From bellman at lysator.liu.se  Tue May 10 03:59:31 2005
From: bellman at lysator.liu.se (Thomas Bellman)
Date: Tue, 10 May 2005 07:59:31 +0000 (UTC)
Subject: Trouble saving unicode text to file
References: <1115500976.571232.76100@z14g2000cwz.googlegroups.com>
	<ameq71lt3ohe3o85fsh4m456qgrnj82dfk@4ax.com>
Message-ID: <d5ppl3$pto$1@news.island.liu.se>

John Machin <sjmachin at lexicon.net> writes:

> Which raises a question: who or what is going to read your file? If a
> Unicode-aware application, and never a human, you might like to
> consider encoding the text as utf-16.

Why would one want to use an encoding that is neither semi-compatible
with ASCII (the way UTF-8 is), nor uses fixed-with characters (like
UTF-32 does)?


-- 
Thomas Bellman,   Lysator Computer Club,   Link?ping University,  Sweden
"You are in a twisty little passage of       !  bellman @ lysator.liu.se
 standards, all conflicting."                !  Make Love -- Nicht Wahr!


From max at alcyone.com  Tue May 31 12:46:20 2005
From: max at alcyone.com (Erik Max Francis)
Date: Tue, 31 May 2005 09:46:20 -0700
Subject: The need to put "self" in every method
In-Reply-To: <1117554344.938440.54700@g14g2000cwa.googlegroups.com>
References: <1117554344.938440.54700@g14g2000cwa.googlegroups.com>
Message-ID: <GNCdnTrd6bBBCQHfRVn-gQ@speakeasy.net>

Fernando M. wrote:

> i was just wondering about the need to put "self" as the first
> parameter in every method a class has because, if it's always needed,
> why the obligation to write it? couldn't it be implicit?
> 
> Or is it a special reason for this being this way?

Because it's not always needed.  See staticmethod or classmethod.

-- 
Erik Max Francis && max at alcyone.com && http://www.alcyone.com/max/
San Jose, CA, USA && 37 20 N 121 53 W && AIM erikmaxfrancis
   The basis of optimism is sheer terror.
   -- Oscar Wilde


From jeffelkins at earthlink.net  Fri May 20 18:26:09 2005
From: jeffelkins at earthlink.net (Jeff Elkins)
Date: Fri, 20 May 2005 18:26:09 -0400
Subject: passing arguments
Message-ID: <200505201826.09939.jeffelkins@earthlink.net>

I'm sure this is obvious, but how the heck do pass an argument(s) to a python 
script from the command line?

Thanks,

Jeff Elkins


From tjreedy at udel.edu  Tue May  3 02:35:05 2005
From: tjreedy at udel.edu (Terry Reedy)
Date: Tue, 3 May 2005 02:35:05 -0400
Subject: empty lists vs empty generators
References: <509534af.0505021514.5e49aa2@posting.google.com>
Message-ID: <d575mu$m3g$1@sea.gmane.org>


"Brian Roberts" <brian at mirror.org> wrote in message 
news:509534af.0505021514.5e49aa2 at posting.google.com...
> I'm using using generators and iterators more and more intead of
> passing lists around, and prefer them.  However, I'm not clear on the
> best way to detect an empty generator (one that will return no items)
> when some sort of special case handling is required.

If you write an iterator class instead of the abbreviated generator form, 
and you can tell from the initialization parameters whether there will be 
any data, then you can give the class a __nonzero__ method.  You can also 
have an initially nonempty iterator flag when it becomes empty.

My point is that writing an iterator as a generator is a convenience, not a 
necessity, and that one gives up the full flexibility of an iterator class 
when one does so, but that one is not required to do so.

I quite understanding wanting to have your cake and eat it too.  The 
convenience is sometimes major.

Terry J. Reedy





From aahz at pythoncraft.com  Wed May  4 14:09:33 2005
From: aahz at pythoncraft.com (Aahz)
Date: 4 May 2005 11:09:33 -0700
Subject: Any decent IM protocol implementations (icq or aim)
References: <mailman.104.1115130124.6583.python-list@python.org>
Message-ID: <d5b34t$dqr$1@panix1.panix.com>

In article <mailman.104.1115130124.6583.python-list at python.org>,
Jaime Wyant  <programmer.py at gmail.com> wrote:
>
>Can anyone recommend one?  Google isn't giving me much.

http://twistedmatrix.com/projects/words/
-- 
Aahz (aahz at pythoncraft.com)           <*>         http://www.pythoncraft.com/

"It's 106 miles to Chicago.  We have a full tank of gas, a half-pack of
cigarettes, it's dark, and we're wearing sunglasses."  "Hit it."


From sakesun at boonthavorn.com  Sat May  7 02:46:32 2005
From: sakesun at boonthavorn.com (Sakesun Roykiattisak)
Date: Sat, 07 May 2005 13:46:32 +0700
Subject: Array programming
In-Reply-To: <d5hnrt+lss2@eGroups.com>
References: <d5hnrt+lss2@eGroups.com>
Message-ID: <427C6448.9010102@boonthavorn.com>

V.C.Sekhar wrote:

>Hi there,
>   I couldnt get to do the following task using Python. Can some pls 
>suggest me a way to do this.
>
>I have an array with duplicate strings filled in it. Now am looking for 
>a way to extract only the DISTINCT Values from that array.
>
>Could some one pls help me out.
>
>Thanks in advance,
>Sekhar
>
>
>  
>

try use "set" or "frozenset", if you use python2.4
or try "sets.Set" or "sets.ImmutableSet", if you use python2.3

 >>> import sets
 >>> s = sets.Set([1,1,2,3,2,4])
 >>> for x in s: print x
1
2
3
4



From Holzmayer.Bernhard at deadspam.com  Tue May 17 05:28:01 2005
From: Holzmayer.Bernhard at deadspam.com (Bernhard Holzmayer)
Date: Tue, 17 May 2005 11:28:01 +0200
Subject: Windows distribution suggestions?
References: <7x3bsmfjdg.fsf_-_@ruckus.brouhaha.com>
	<d6c6e6$mlf$1@news01.versatel.de>
	<7xekc6p9tp.fsf@ruckus.brouhaha.com>
Message-ID: <d6cd9k$ptk$1@news01.versatel.de>

Paul Rubin wrote:

>> Since your installer needs to run before Python is installed, you need
>> something else. Go to http://www.wisesolutions.com
>> You'll find a Windows installer program, with a demo-version (30days
>> license). Try this, it would be my best recommendation.
> 
> Hmm, ok, it looks like the paid version is around 500 USD.  Since this
> is a Windows thing I'm ok in principle with using a payware packaging
> app, but that's a bit on the expensive side.  I'll see what the
> customer says but I think they might resist.

1) Maybe you can start with the 30days demo license to find out.
2) The high price is paid for the benefit, that you won't get lost inside
the terrific installation jungle like registry, access restrictions, dlls
etc. In the end, it's your benefit, not your customer's.
If I were the customer, I'd demand a fluent installation process at no cost
and without any risk and/or conflict with other installed software. 
If I were the developer (you), I'd compare all costs/times with that price.
If you calculate one hour for let's say 25 USD, the question is: will it
save you 20 hrs. I guess so. If you have spare time, it doesn't get paid.

> The app works ok under Windows now.  
Congratulations.
> I don't use ODBC.  I might need some database connectivity later and will
probably use MySQL.  
Then you'll probably use ODBC, since the MySQL server will probably not be
run under Windows and on the same machine. 
> I don't want to need an admin account.  
Nobody wants that. It just happens...
> Right now the app just has a Tkinter gui, 
That's safe in general, and probably a good choice.
> reads and writes a few files and talks to some sockets.  
Not that trivial! Plan enough time for testing.
And, if you install without sophisticated tool, reserve enough time for
troubleshooting and modifications...
 
> The program is under active development and sprouting new features
> every few minutes.  The idea is to release a new development build once
> a week or so, for internal use by the customer.
If the customer runs it on different machines, make sure that you always
have one installation around where you work, which is exactly as the one at
the customer's site. If the customer is able to run different versions at
the same time, keep one living copy of every possible version.
Hunting bugs while you have lost the overview of the versions, will haunt
you in the end...
> 
>> If your application has a GUI, a menu entry might fetch your update files
>> and place them wherever they must reside. your update.py might feed that
>> menu entry. Quite easy.
> 
> Hmm, that's another thing I'd have to code--maybe it's feasible.  I'll
> think about it.
Have a look at one of the Adobe Acrobat Reader's newest versions. They do
this. Indeed, it doesn't work on my computer, but that's the idea...

> No I'm really ignorant about Windows.  I just put the app's files in
> C:/Program Files/appname because that's what one of the other developers
> said to do.

Don't do that, despite what the others say. You may propose that, but in any
case give the installer the choice to change it.
Lots of people use different partitions which separate Windows / Programs /
Data. In other countries even Windows uses different path names (e.g. here
in Germany C:/Programme). According to Microsoft's Technical Reference,
you'd better ask the registry to find out where applications usually
reside. (That's what professional installation software does.)

I guess that neither your apps nor Python requires special folders or paths,
so don't impress this disadvantage artificially.
Vice versa: don't ask for another drive/partition, because some users have
only C:/... 

> 
>> > I do have Visual C++ installed on the development machine, if that
>> > helps.
>> 
>> Isn't Visual C++ still coming with a restricted version of InstallShield?
>> If so, check if you can use that. It might give your release a sort of
>> professional shine...
> 
> Hmm, that's really really interesting.  How would I find out?
Check the installation. Your StartMenu should show the appropriate entry
under VisualStudio/...tools... If not, maybe you forgot to install it.
Or, it's gone away like some other precious tools...
> 
>> You'll certainly find out, that managing the registry/desktop file system
>> will cost most energy, if you want to release your apps to WindowsXP.
>> Once Python is running your apps, the rest is peanuts.
> 
> Oh man, I was hoping to avoid that level of hassle.  
In contrary, that's what really makes fun. The registry is like a bomb in
your hand - it provides mighty power over the user!!!

> My app doesn't use any registry keys of its own, but I guess the 
> Python executable does, and that stuff presumably has to be updated 
> with every reinstall, 
Probably no. Since your update will certainly only affect py-files, there's
no reason to worry about the Python's registry activities.
The other thing is, that your update must know where to put the updated
files, and that information is usually kept in the registry.
But dealing with registry issues is very easy, even if you do it in Python,
if you install a release like ActivePython, which I would propose.
> and something is sure to eventually go wrong and corrupt 
> the registry, if this is anything like the Windows that I'm used to
> hearing about.  Sigh.  Just how bad is that under Windows XP?
Don't worry. That's very secure and fairly straigth-forward. 
However, you should be familiar with it. Make sure you have a XP machine
around and play with it. 
I'm manually modifying registry entries for almost a decade now, and I had
never crashed a system by doing so.

> I'm used to Windows 95 completely falling apart at the slightest
> error but I have the impression that XP is a bit more solid.
Are you sure that this had to do with registry modifications?
Take a Linux box, remove the contents of /etc, and then reboot.
What happens???
You're not stupid, are you? 
You wouldn't do that on Linux, so why should you spoil the registry?

> 
> Maybe I'll have to just tell them to install Python 2.4 from its
> distro MSI 
That's acceptable, I guess. Since that's rather easy.
> and then I can put together a distutils setup.py thingie 
> which they'd run separately.  
You're familiar with that? If so, yes, that's feasible.
But don't ask the user to launch setup.py.
If there's a GUI anyhow, why not launch it from there.
The user is certainly accustomed to the usage and you can easily make 
him/her cooperate by clicking an install button or select it from the
Help/About-Menu...

What about this, since you have VisualC++ around:

Write a simple C++ app, which launches the Python installer, then launches a
Python script which does all the other stuff?
Call it Setup.exe, place it on the top level of your CD, and there you
are...

Bernhard 


From irmen.NOSPAM at xs4all.nl  Mon May  2 20:14:57 2005
From: irmen.NOSPAM at xs4all.nl (Irmen de Jong)
Date: Tue, 03 May 2005 02:14:57 +0200
Subject: cgi "print statement" in multithreaded enviroment?
In-Reply-To: <mailman.59.1115079020.6583.python-list@python.org>
References: <mailman.59.1115079020.6583.python-list@python.org>
Message-ID: <4276c282$0$153$e4fe514c@news.xs4all.nl>

vegetax wrote:
> How can i use cgi'like print statement in a multitreaded web framework?
> each thread has its own Servlet instance with request/response objects,
> sys.stdout = self.response(which is a file like object) wont work because
> all threads will set the same file object and it will be a concurrence
> mess.
> 
> I am out of ideas here,so any hacks welcome =)
> 

instead of:

    print "<html>.....</html>

do:

    print >>self.response, "<html>....</html>"


--Irmen


From kraus at hagen-partner.de  Fri May 27 08:12:37 2005
From: kraus at hagen-partner.de (Wolfram Kraus)
Date: Fri, 27 May 2005 14:12:37 +0200
Subject: Incrementing letters
In-Reply-To: <mailman.172.1117193916.18027.python-list@python.org>
References: <d770dr$7lu$1@nwrdmz03.dmz.ncs.ea.ibs-infra.bt.com>
	<mailman.172.1117193916.18027.python-list@python.org>
Message-ID: <d772qs$qsh$1@ork-un.noris.net>

Heiko Wundram wrote:
> Am Freitag, 27. Mai 2005 13:31 schrieb Michael:
> 
>>if(C == 'z') C='a';
>>else C++;
> 
> 
> if C == "z":
>   C = "a"
> else:
>   C = chr(ord(C)+1)
> 
According to the OP's problem (with the assumption that only characters 
  from a-z are given) he might even try a lil LC:
 >>> s = "shiftthis"
 >>> ''.join([chr(((ord(x)-ord('a')+1)%26)+ord('a')) for x in s])
'tijguuijt'


HTH,
Wolfram


From skip at pobox.com  Wed May 11 21:46:00 2005
From: skip at pobox.com (Skip Montanaro)
Date: Wed, 11 May 2005 20:46:00 -0500
Subject: Python Documentation (should be better?)
In-Reply-To: <RrmdnZkZfa1sEx_fRVn-1g@comcast.com>
References: <mailman.396.1115842071.29826.python-list@python.org>
	<RrmdnZkZfa1sEx_fRVn-1g@comcast.com>
Message-ID: <17026.46424.114184.950036@montanaro.dyndns.org>


    Steve> [AMK's] wiki side-by-side with the Python docs:

    Steve> http://pydoc.amk.ca/frame.html

There's also wikalong, though that's firefox-specific.

Skip


From RonaldGrossi3848 at yahoo.com  Sat May 14 14:51:46 2005
From: RonaldGrossi3848 at yahoo.com (RonaldGrossi3848 at yahoo.com)
Date: 14 May 2005 11:51:46 -0700
Subject: Jesus said, "I am the way,
	the truth and the life: no one can come to the Father(God)(in Heaven),
	but by me." (John 14:6) This means that if you die without trusting in
	Jesus Christ as your Lord and Saviour you will die in your sins
	and be forever separated from the love of God in a place called
	Hell. The Holy Bible descibes Hell as a place of eternal
	torment, suffering,
	pain and agony for all those who have rejected Jesus Christ. The good
	news is that you can be sure you are going to Heaven when this
	life is over if you allow Jesus Christ to save you today. Do
	not wait until later to be saved because you do not know
	exactly when you will die. [ Posted by:
	RonaldGrossi3848@yahoo.com on May 14, 2005 ] [ 2:52:09 pm ]
Message-ID: <1116096706.696830.275140@g44g2000cwa.googlegroups.com>

http://www.gotquestions.org/sinners-prayer.html << I saw this site on a
search directory. Great Resource!



From scrimp212 at yahoo.com  Wed May  4 13:05:27 2005
From: scrimp212 at yahoo.com (scrimp)
Date: 4 May 2005 10:05:27 -0700
Subject: FTP/TLS connection using python
In-Reply-To: <4278FFD7.3060200@syscononline.com>
References: <1115225185.951540.128460@z14g2000cwz.googlegroups.com>
	<4278FFD7.3060200@syscononline.com>
Message-ID: <1115226327.793691.252410@o13g2000cwo.googlegroups.com>

Wow, thanks very much Ive been searching on google for a few days now
and have never seen this yet. Thanks ill take a look at what I can do
with this

--Barry



From skip at pobox.com  Wed May 11 15:08:08 2005
From: skip at pobox.com (Skip Montanaro)
Date: Wed, 11 May 2005 14:08:08 -0500
Subject: Problems with csv module
In-Reply-To: <d5tgtc$aur$1@sea.gmane.org>
References: <d5sngn$l4$03$1@news.t-online.com>
	<mailman.338.1115809896.29826.python-list@python.org>
	<d5spph$ktm$01$1@news.t-online.com>
	<a4r381p3s5uhud58tvd2m2nod1ebmo48u0@4ax.com>
	<d5tc55$q3e$1@sea.gmane.org>
	<17026.15830.303909.792010@montanaro.dyndns.org>
	<d5tgtc$aur$1@sea.gmane.org>
Message-ID: <17026.22552.283378.846591@montanaro.dyndns.org>


    >> Based on the requests I've seen here and on the csv at mojam.com mailing
    >> list, it appears people are certainly generating CSV files which
    >> contain Unicode- encoded data.

    Fredrik> in what encodings?

I've seen hints about iso-8859-1/iso-8859-15 and mention that Excel 2000
supports utf-8.  Whether Excel can dump csv files in utf-8 or not, I don't
know, though I'd suppose so.

    Fredrik> is the encoding specified inside the file?  if so, how?

Not that I'm aware of.  AFAIK, you just have to know the file's encoding.

Skip


From lsumnler at uniqueinsuranceco.com  Sun May 29 09:42:23 2005
From: lsumnler at uniqueinsuranceco.com (LenS)
Date: 29 May 2005 06:42:23 -0700
Subject: Newbie learning OOP
Message-ID: <1117374143.284962.3080@z14g2000cwz.googlegroups.com>

Trying to learn OOP concepts and decided to use Python for this
purpose.  I have coded the following CLASS and it seems to work fine.
Any comments on the code or suggestions would be appreciated.

The class let you take a person's name and split it up into first last
and middle.  The class defaults to the assumption that the name will be
passed in as a string in first last and middle order however you can
set the format attribute to take last first and middle order. You can
then get a string back in and opposite order.

class names:
    def __init__(self, format = "F"):
        self.format = format

    def namesplit(self, name):
        if self.format == "F":
            self.namelist = name.split()
            self.first = self.namelist[0]
            self.init = self.namelist[1]
            self.last = self.namelist[2]
        else:
            self.namelist = name.split()
            self.first = self.namelist[1]
            self.init = self.namelist[2]
            self.last = self.namelist[0]

        return self.first, self.init, self.last

    def fjoin(self):
        self.namestring = self.first + ' ' + self.init + ' ' +
self.last

    def ljoin(self):
        self.namestring = self.last + ' ' + self.first + ' ' +
self.init

            
Any comments appreciated.

Len Sumnler



From aahz at pythoncraft.com  Fri May 13 17:38:37 2005
From: aahz at pythoncraft.com (Aahz)
Date: 13 May 2005 14:38:37 -0700
Subject: Python Documentation (should be better?)
References: <5C99C308457E6D4EA5448EA52A66004A675A6E@or.mxim.com>
	<17026.26789.592527.975821@montanaro.dyndns.org>
	<mailman.398.1115843305.29826.python-list@python.org>
	<3eishfF3d6ujU1@individual.net>
Message-ID: <d636ot$poq$1@panix1.panix.com>

In article <3eishfF3d6ujU1 at individual.net>,
Greg Ewing  <greg at cosc.canterbury.ac.nz> wrote:
>
>Curiously I had the same problem just the other day, except with list
>instead of string. I think the problem is that the sections on the
>actual built-in types (list, str, dict, etc.) are one level too far
>down to appear in the table of contents of the Library Reference.
>
>If things could be rearranged so that their names actually appeared in
>the table of contents, I think it would make a big difference in this
>area.

There should be a doc bug I submitted that covers that, but I don't have
time to look for it.
-- 
Aahz (aahz at pythoncraft.com)           <*>         http://www.pythoncraft.com/

"And if that makes me an elitist...I couldn't be happier."  --JMS


From mpnugent at NOSPAMcopper.net  Tue May 17 23:16:52 2005
From: mpnugent at NOSPAMcopper.net (Michael P. Nugent)
Date: Tue, 17 May 2005 23:16:52 -0400
Subject: A Specific PyGame
Message-ID: <428ab5d7$1_1@newsfeed.slurp.net>

I am looking for a specific "game" that is really a programming 
environment for young kids.

I believe it implements PyGame, and presents two windows: one is a grid 
with some obstacles, and a character that must traverse the grid; 
another is an interactive editor that encourages a learner to write a 
script to navigate the character around the obstacles.

I saw this within the past week, but I cannot remember or discover 
where. I have revisited a number of PyGame related sites, and Googled 
like crazy, but I'm not finding any visited links that are productive. 
I've also extracted everything out of .mozilla/.../history.dat. As you 
can see, I'm looking for a specific answer to my specific query.



From python-url at phaseit.net  Mon May  9 13:18:32 2005
From: python-url at phaseit.net (Simon Brunning)
Date: Mon, 09 May 2005 17:18:32 +0000
Subject: Dr. Dobb's Python-URL! - weekly Python news and links (May  9)
Message-ID: <mailman.235.1115677173.29826.python-announce-list@python.org>

QOTW: "It's not perfect, but then nobody in this thread has offered
anything even remotely resembling perfect documentation for regular
expressions yet. <wink>" - Peter Hansen

"Python's flavor of OO is perfectly valid and usable, even though it
doesn't follow the Java Holy Bible of Object Orientation (gasp!)" - Hans Nowak

"It's highly arguable if Python is "better" than C#, but from a
control-your-own-destiny angle, Python is a complete slam dunk. Python
works well on *nix, Java, .NET and Mac OS X. It's open source. It's
sane. But I won't argue it's fast. It's usually just not so slow you
care." - Jonathan Rentzsch

        
    String Manipulation in Python:
        http://www.devshed.com/c/a/Python/String-Manipulation/
        
    Why you can't detect a float's significant digits:
        http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/85eaac30c01b51a5
    
    Dependency Injection The Python Way:
        http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/413268
        
    What is Paste?
        http://blog.ianbicking.org/what-is-paste.html
        
    Finding peaks and valleys:
        http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/6506673a689339b7
        
    Type-safe Enums in Python:
        http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/413486
        
    Python turns up again in a Microsoft outpost:
        http://www.informit.com/guides/content.asp?g=windowsserver&seqNum=183&rl=1

    Encryption with Python:
        http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/5fb9ffada975bae9

    The importance of being selfish, deja vu:
        http://zephyrfalcon.org/weblog2/arch_e10_00770.html#e776
        
    Notable releases:
        CherryPy-2.0-final:
            http://groups-beta.google.com/group/comp.lang.python.announce/browse_thread/thread/8905b9f2bd114f38
        BeautifulSoup 2.1.0:
            http://www.crummy.com/software/BeautifulSoup/
        KirbyBase 1.8.2:
            http://www.netpromi.com/kirbybase.html


========================================================================
Everything Python-related you want is probably one or two clicks away in
these pages:

    Python.org's Python Language Website is the traditional
    center of Pythonia
        http://www.python.org
    Notice especially the master FAQ
        http://www.python.org/doc/FAQ.html

    PythonWare complements the digest you're reading with the
    marvelous daily python url
         http://www.pythonware.com/daily  
    Mygale is a news-gathering webcrawler that specializes in (new)
    World-Wide Web articles related to Python.
         http://www.awaretek.com/nowak/mygale.html 
    While cosmetically similar, Mygale and the Daily Python-URL
    are utterly different in their technologies and generally in
    their results.

    For far, FAR more Python reading than any one mind should
    absorb, much of it quite interesting, several pages index
    much of the universe of Pybloggers.
	http://lowlife.jp/cgi-bin/moin.cgi/PythonProgrammersWeblog
        http://www.planetpython.org/
        http://mechanicalcat.net/pyblagg.html

    comp.lang.python.announce announces new Python software.  Be
    sure to scan this newsgroup weekly.
        http://groups.google.com/groups?oi=djq&as_ugroup=comp.lang.python.announce

    Steve Bethard, Tim Lesher, and Tony Meyer continue the marvelous
    tradition early borne by Andrew Kuchling, Michael Hudson and Brett
    Cannon of intelligently summarizing action on the python-dev mailing
    list once every other week.
	http://www.python.org/dev/summary/

    The Python Package Index catalogues packages.
        http://www.python.org/pypi/

    The somewhat older Vaults of Parnassus ambitiously collects references
    to all sorts of Python resources.
        http://www.vex.net/~x/parnassus/   

    Much of Python's real work takes place on Special-Interest Group
    mailing lists
        http://www.python.org/sigs/

    The Python Business Forum "further[s] the interests of companies
    that base their business on ... Python."
	http://www.python-in-business.org

    Python Success Stories--from air-traffic control to on-line
    match-making--can inspire you or decision-makers to whom you're
    subject with a vision of what the language makes practical.
        http://www.pythonology.com/success

    The Python Software Foundation (PSF) has replaced the Python
    Consortium as an independent nexus of activity.  It has official
    responsibility for Python's development and maintenance. 
        http://www.python.org/psf/
    Among the ways you can support PSF is with a donation.
        http://www.python.org/psf/donate.html

    Kurt B. Kaiser publishes a weekly report on faults and patches.
        http://www.google.com/groups?as_usubject=weekly%20python%20patch
       
    Cetus collects Python hyperlinks.
        http://www.cetus-links.org/oo_python.html

    Python FAQTS
        http://python.faqts.com/

    The Cookbook is a collaborative effort to capture useful and
    interesting recipes.
	http://aspn.activestate.com/ASPN/Cookbook/Python

    Among several Python-oriented RSS/RDF feeds available are
	http://www.python.org/channews.rdf
	http://bootleg-rss.g-blog.net/pythonware_com_daily.pcgi
	http://python.de/backend.php
    For more, see
	http://www.syndic8.com/feedlist.php?ShowMatch=python&ShowStatus=all
    The old Python "To-Do List" now lives principally in a
    SourceForge reincarnation.
        http://sourceforge.net/tracker/?atid=355470&group_id=5470&func=browse
        http://python.sourceforge.net/peps/pep-0042.html
     
    The online Python Journal is posted at pythonjournal.cognizor.com.
    editor at pythonjournal.com and editor at pythonjournal.cognizor.com
    welcome submission of material that helps people's understanding
    of Python use, and offer Web presentation of your work.

    del.icio.us presents an intriguing approach to reference commentary.
    It already aggregates quite a bit of Python intelligence.
        http://del.icio.us/tag/python

    *Py: the Journal of the Python Language*
        http://www.pyzine.com

    Archive probing tricks of the trade:
        http://groups.google.com/groups?oi=djq&as_ugroup=comp.lang.python&num=100
        http://groups.google.com/groups?meta=site%3Dgroups%26group%3Dcomp.lang.python.*

Previous - (U)se the (R)esource, (L)uke! - messages are listed here:
  http://www.ddj.com/topics/pythonurl/ (requires subscription)
  http://groups-beta.google.com/groups?q=python-url+group:comp.lang.python*&start=0&scoring=d&
  http://purl.org/thecliff/python/url.html (dormant)
or
  http://groups.google.com/groups?oi=djq&as_q=+Python-URL!&as_ugroup=comp.lang.python


Suggestions/corrections for next week's posting are always welcome.
E-mail to <Python-URL at phaseit.net> should get through.

To receive a new issue of this posting in e-mail each Monday morning
(approximately), ask <claird at phaseit.net> to subscribe.  Mention
"Python-URL!".


-- The Python-URL! Team--

Dr. Dobb's Journal (http://www.ddj.com) is pleased to participate in and
sponsor the "Python-URL!" project.




From exarkun at divmod.com  Wed May 11 00:31:24 2005
From: exarkun at divmod.com (Jp Calderone)
Date: Wed, 11 May 2005 04:31:24 GMT
Subject: Solipsis: Python-powered Metaverse
In-Reply-To: <42816D74.8050103@ulmcnett.com>
Message-ID: <20050511043124.15422.1783409866.divmod.quotient.31539@ohm>

On Tue, 10 May 2005 19:27:00 -0700, Paul McNett <p at ulmcnett.com> wrote:
>Joseph Garvin wrote:
>> I was looking at this earlier today because I was curious how they were
>> going to handle performance concerns (both due to Python and bandwidth).
>> I'm having trouble understanding all of the details -- what is the
>> significance of the use of a torus for the world space? Does this
>> somehow help in the computation of the convex hull?
>
>I'm having trouble understanding how they are going to make this work
>server-less, pure peer-to-peer. I just tried it out and it was cool: I
>could move around in the world, get near other avatars and say "hey".
>Only, I couldn't hear what they said back to me because I don't have UDP
>port 6000 open on my firewall and forwarding to my laptop (and don't
>want to do that either).
>
>It is a shame: peer to peer has the potential to enable really cool,
>imaginative multiuser worlds, but how many people are connecting
>directly to the internet these days?
>

  This can be dealt with, fortunately.  I plan to poke the Solipsis folks about it the moment I get a couple adjacent free minutes. :)  It should be an easy change to make, since their protocol code is orthogonal to their transport code (and defeating NATs and firewalls is a transport issue).

  Jp


From mefjr75 at hotmail.com  Sun May 15 12:27:26 2005
From: mefjr75 at hotmail.com (M.E.Farmer)
Date: 15 May 2005 09:27:26 -0700
Subject: incorrect(?) shlex behaviour
References: <1116102603.247959.284790@g49g2000cwa.googlegroups.com>
	<1116135273.280659.23590@g47g2000cwa.googlegroups.com>
	<1116168701.239988.246170@g43g2000cwa.googlegroups.com>
Message-ID: <1116174446.188330.49160@g47g2000cwa.googlegroups.com>

bill wrote:
> Its gets worse:
> >>> from shlex import StringIO
> >>> from shlex import shlex
> >>> t = shlex(StringIO("2>&1"))
> >>> while True:
> ...  b = t.read_token()
> ...  if not b: break
> ...  print b
> ...
> 2
> &
> 1                    <----------- where's the '>' !?
> >>> import shlex
> >>> print shlex.split("2>&1")
> ['2>&1']
>
> It strikes me that split should be behaving exactly the same way as
> read_token, but that may be a misunderstanding on my part of what
split
> is doing.
>
> However, it is totally bizarre that read_token discards the '>'
symbol
> in the string!  I don't know much about lexical analysis, but it
> strikes me that discarding characters is a bad thing.
>From the docs:
split(s[, comments])
    Split the string s using shell-like syntax. If comments is False
(the default), the parsing of comments in the given string will be
disabled (setting the commenters member of the shlex instance to the
empty string). This function operates in POSIX mode. New in version
2.3.

Maybe looking at string methods split might help.
>>> "$(which sh)".split()
['($(which', 'sh)']

>From the docs:
read_token()
    Read a raw token. Ignore the pushback stack, and do not interpret
source requests. (This is not ordinarily a useful entry point, and is
documented here only for the sake of completeness.)

# Just like in my first post
>>> from StringIO import StringIO
>>> from shlex import shlex
>>> t = shlex(StringIO("2>&1"))
>>> t.get_token()
'2'
>>> t.get_token()
'>'
>>> t.get_token()
'&'
>>> t.get_token()
'1'
>>> t.get_token()
''
# Your way
>>> t = shlex(StringIO("2>&1"))
>>> t.read_token()
'2'
>>> t.read_token()
'&'
>>> t.read_token()
'1'
>>> t.read_token()
''
>>>

Hth,
M.E.Farmer



From danb_83 at yahoo.com  Thu May  5 00:56:37 2005
From: danb_83 at yahoo.com (Dan Bishop)
Date: 4 May 2005 21:56:37 -0700
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <mailman.24.1115246239.29826.python-list@python.org>
References: <d4u60o$akh$1@news2.netvision.net.il>
	<mailman.47.1114818531.14961.python-list@python.org>
	<1114924100.296223.114020@g14g2000cwa.googlegroups.com>
	<1114927892.321086.60190@z14g2000cwz.googlegroups.com>
	<zX%ce.78213$ft1.5056576@phobos.telenet-ops.be>
	<Zj2de.78345$a42.5091422@phobos.telenet-ops.be>
	<8764y29x3m.fsf@uwo.ca> <877jihc7qv.fsf@uwo.ca>
	<4279366B.6070800@zopatista.com>
	<mailman.24.1115246239.29826.python-list@python.org>
Message-ID: <1115268997.066368.208690@o13g2000cwo.googlegroups.com>


Martijn Pieters wrote:
> Martijn Pieters wrote:
> > I haven't figured this one out yet either. Rather frustrating
really.
> > All the hints I've been given so far is to remember the solution
for
> > level 12.
>
> Awwww, that was devious! I found it finally, how evil that was! I
really
> fell for it too, until I paid more attention to that error message.
Got
> it finally. *woot*

You mean there's a hint in that XML-RPC fault?



From bokr at oz.net  Thu May 12 10:53:38 2005
From: bokr at oz.net (Bengt Richter)
Date: Thu, 12 May 2005 14:53:38 GMT
Subject: Launch file in Notepad
References: <42835db6$0$1334$5fc3050@dreader2.news.tiscali.nl>
Message-ID: <42836519.1343368812@news.oz.net>

On Thu, 12 May 2005 15:41:14 +0200, George <gtog at _no___spam_myrealbox.com> wrote:

>Newbie question:
>
>I'm trying to lauch Notepad from Python to open a textfile:
>
>import os
>b1="c:\test.txt"

>os.system('notepad.exe ' + b1)
>
>However, the t of test is escaped by the \, resulting in Notepad trying 
>to open "c: est.txt".
Right. '\t' is a tab, not two characters. You can get the characters you want
by escaping the escape
>
>How do I solve this?
>
>(By the way, b1 comes from a command line parameter, so the user enters 
>c:\test.txt as command line parameter.)

It should be ok then, unless you have somehow processed the command line parameter and interpreted
the backslash as an escape. E.g., pargs.py here prints command line args and backslash is
an ordinary string character as you see in argv[3] below. If it were a tab, you would see
whitespace instead of the backslash.

 [ 7:35] C:\pywk\parse\ast>type c:\util\pargs.py
 import sys
 for i in xrange(len(sys.argv)):
     print 'argv[%d]: "%s"' % (i,sys.argv[i])

 [ 7:35] C:\pywk\parse\ast>py24 c:\util\pargs.py abc def c:\test.txt
 argv[0]: "c:\util\pargs.py"
 argv[1]: "abc"
 argv[2]: "def"
 argv[3]: "c:\test.txt"

If by "command line" you mean your own programmed input, make sure you use raw_input, not input, e.g.,

 >>> print '-->>%s<<--' % raw_input('Enter text please: > ')
 Enter text please: > c:\test.txt
 -->>c:\test.txt<<--

But input evaluates the input string (also posing security problems if you don't trust the user):
 >>> print '-->>%s<<--' % input('Enter text please: > ')
Enter text please: > c:\test.txt
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File "<string>", line 1
    c:\test.txt
     ^
SyntaxError: invalid syntax

That was from evaluating, so we can quote:
 >>> print '-->>%s<<--' % input('Enter text please: > ')
 Enter text please: > "c:\test.txt"
 -->>c:  est.txt<<--
       ^^--there's that tab \t again, unless you escape the backslash

 >>> print '-->>%s<<--' % input('Enter text please: > ')
 Enter text please: > "c:\\test.txt"
 -->>c:\test.txt<<--


But in your example above,

 >>> b1="c:\test.txt"
 >>> b1
 'c:\test.txt'
 >>> list(b1)
 ['c', ':', '\t', 'e', 's', 't', '.', 't', 'x', 't']
 >>> print '-->>%s<<--'%b1
 -->>c:  est.txt<<--

Escaping the escape:
 >>> b1="c:\\test.txt"
 >>> print '-->>%s<<--'%b1
 -->>c:\test.txt<<--

Using raw string format (prefixed r on string), which won't work if
string ends in backslash BTW)
 >>> b1=r"c:\test.txt"
 >>> print '-->>%s<<--'%b1
 -->>c:\test.txt<<--

To see the single tab character in your original
 >>> b1="c:\test.txt"
 >>> b1[2]
 '\t'
 >>> ord(b1[2])
 9

BTW, you might want to use os.system('start notepad ' + b1)
if you want an independent process and not wait for notepad to finish.


Regards,
Bengt Richter


From rupole at hotmail.com  Thu May 12 14:23:56 2005
From: rupole at hotmail.com (Roger Upole)
Date: Thu, 12 May 2005 14:23:56 -0400
Subject: win32com Dispatch() and SetPriorityClass()
References: <1115858834.244312.130110@g43g2000cwa.googlegroups.com>
Message-ID: <4283a016$1_1@spool9-west.superfeed.net>

The ie object exposes its window handle as attribute HWND, and you should
be able to use win32process.GetWindowThreadProcessId to get the thread id
and process id that created the window.

   hth

       Roger

"Chris Curvey" <ccurvey at gmail.com> wrote in message
news:1115858834.244312.130110 at g43g2000cwa.googlegroups.com...
> if I'm using Dispatch() to manage a COM object (IE), is there a way to
> get ahold of the process handle so that I can bump it's priority?
>





----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! >100,000 Newsgroups
---= East/West-Coast Server Farms - Total Privacy via Encryption =---


From __peter__ at web.de  Fri May 20 07:54:37 2005
From: __peter__ at web.de (Peter Otten)
Date: Fri, 20 May 2005 13:54:37 +0200
Subject: string formatting quirk?
References: <1116586211.346424.272320@g14g2000cwa.googlegroups.com>
Message-ID: <d6kj42$jb$03$1@news.t-online.com>

anuraguniyal at yahoo.com wrote:

> ''%([]) doesn't raise exception
> but
> ''%('') does
> 
> Can anyone explain me why??

That is a side-effect of duck-typing. The duck-type of an empty list is
indistinguishable from that of an empty dictionary. Not testing the exact
type here achieves consistency with the behaviour of custom dictionaries,
e. g: 

>>> class List(list):
...     def __getitem__(self, index):
...             return list.__getitem__(self, int(index))
...
>>> "%(0)s" % List([42])
'42'
>>> "%(1)s %(0)s" % List([42, 24])
'24 42'
>>> "" % List([])
''

Peter



From jstroud at mbi.ucla.edu  Fri May  6 18:33:02 2005
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Fri, 6 May 2005 15:33:02 -0700
Subject: Reference to self not passed to member function
Message-ID: <200505061533.02116.jstroud@mbi.ucla.edu>

Hello All,

I did this:

py> class bob(object):
...   def __init__(self,**kwargs):
...     for fname,func in kwargs.items():
...       setattr(self, fname, lambda *args : func(*args))
...
py> def doit():
...   print "wuzzup?"
...
py> abob = bob(doit=doit)
py>
py> abob.doit()
wuzzup?


Much to my surprise, this works fine. 

My questions:

1. What exactly is going on?
2. How can I get ref to self passed to doit() if I want it to? This:

        abob.doit(abob)

   seems like the hard way

Any ideas?

James


-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From rkern at ucsd.edu  Tue May 17 04:42:50 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Tue, 17 May 2005 01:42:50 -0700
Subject: printing arrays in shell, and .py association with idle
In-Reply-To: <000601c55ab5$ccca7d50$6401a8c0@HAL11000>
References: <000601c55ab5$ccca7d50$6401a8c0@HAL11000>
Message-ID: <d6capa$6uj$1@sea.gmane.org>

Paris Miles-Brenden wrote:
> I have been using python for the last 3 years and feel it to be an 
> excellent programming language.  However, I have run into a few snags or 
> annoyances.  I am currently creating a computational physics simulation 
> which requires large arrays and am using numeric, although this is not a 
> list for numeric, I think that my question falls under python in general.
>  
>  
> 1.  My first problem is with printing these large arrays for debugging 
> purposes.  Is there any way to prevent the python shell from word 
> wrapping single array print statements?  I'm simply using:
>  
> print hamiltonian
>  
> where hamiltonian is an array of complex numbers.  Changing window size 
> (default or otherwise) does not change this, and I have found the option 
> no-where.

Well this at least is a Numeric-specific question, not a general Python one.

Anyways, the string representation can be controlled by supplying the 
appropriate callback. From Numeric.py (pardon any unfortunate linewraps):

#Use Konrad's printing function (modified for both str and repr now)
from ArrayPrinter import array2string
def array_repr(a, max_line_width = None, precision = None, 
suppress_small = None):
     return array2string(a, max_line_width, precision, suppress_small,
', ', 1)

def array_str(a, max_line_width = None, precision = None, suppress_small 
= None):
     return array2string(a, max_line_width, precision, suppress_small,
' ', 0)

multiarray.set_string_function(array_str, 0)
multiarray.set_string_function(array_repr, 1)

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From jstroud at mbi.ucla.edu  Sun May  8 18:38:07 2005
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Sun, 8 May 2005 15:38:07 -0700
Subject: How to implement multiple constructors
In-Reply-To: <200505081528.39468.jstroud@mbi.ucla.edu>
References: <1115588999.677872.174250@z14g2000cwz.googlegroups.com>
	<200505081528.39468.jstroud@mbi.ucla.edu>
Message-ID: <200505081538.07650.jstroud@mbi.ucla.edu>

On Sunday 08 May 2005 03:28 pm, James Stroud wrote:
> ? ?try:
> ? ? ?self.avalue = isinstance.get_avalue()
> ? ?except NameError:
> ? ? ?self.avalue = isinstance.get_anothervalue()

I have no idea where I copied those "isinstance"s from. Also, the except 
should be an AttributeError. Here is a retry:

 ? ?try:
 ? ? ?self.avalue = aninstance.get_avalue()
 ? ?except AttributeError:
 ? ? ?self.avalue = aninstance.get_anothervalue()

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From prabapython at yahoo.co.in  Thu May 12 01:40:11 2005
From: prabapython at yahoo.co.in (praba kar)
Date: Thu, 12 May 2005 06:40:11 +0100 (BST)
Subject: regarding php equivalent Mail::Factory Module
In-Reply-To: 6667
Message-ID: <20050512054011.13140.qmail@web8407.mail.in.yahoo.com>


Dear All,

      In Php we can send mail by Mail::Factory's
send method. Here php using send method instead
of using  any smtp module like that I want to know
that kind of python module 

________________________________________________________________________
Yahoo! India Matrimony: Find your life partner online
Go to: http://yahoo.shaadi.com/india-matrimony


From gh at ghaering.de  Fri May  6 10:35:49 2005
From: gh at ghaering.de (=?ISO-8859-1?Q?Gerhard_H=E4ring?=)
Date: Fri, 06 May 2005 16:35:49 +0200
Subject: Python & SQLite
In-Reply-To: <1115385904.297397.266190@g14g2000cwa.googlegroups.com>
References: <d57g8v$n4c$1@sunce.iskon.hr>	<mailman.86.1115114086.6583.python-list@python.org>	<1115131256.058058.139980@o13g2000cwo.googlegroups.com>	<slrnd7f65j.rti.klaus@main.szn.dk>
	<1115385904.297397.266190@g14g2000cwa.googlegroups.com>
Message-ID: <427B80C5.5090703@ghaering.de>

dcrespo wrote:
>>There are specific python modules for SQLite on Linux.
> 
> Which? I thought pysqlite works on Linux.

Sure. What he probably meant was that there are binary installers for 
pysqlite from various Linux distributions (Debian, Gentoo, ...).

> My important question is: If I develop an app using
> Python-wxPython-PySQLite under Windows, and run it on Linux, it should
> work, ?right?

Correct for Python and pysqlite. For wxPython you will often have to do 
fine-tuning because some bugs are only present on Windows, and some bugs 
are only present on *nix. And things sometimes look slightly different.

-- Gerhard


From whocaresrmb at yahoo.com  Mon May 16 10:30:07 2005
From: whocaresrmb at yahoo.com (Johnny Gentile)
Date: 16 May 2005 07:30:07 -0700
Subject: space saving retitle of thread
In-Reply-To: <TgChe.17018$J12.8038@newssvr14.news.prodigy.com>
References: <1116096706.696830.275140@g44g2000cwa.googlegroups.com>
	<Etvhe.1353573$8l.349001@pd7tw1no>
	<1116112436.708034.81770@g44g2000cwa.googlegroups.com>
	<TgChe.17018$J12.8038@newssvr14.news.prodigy.com>
Message-ID: <1116253807.845281.14430@g49g2000cwa.googlegroups.com>

And this is OK w/ Google?



From bear at sonic.net  Wed May 25 04:16:03 2005
From: bear at sonic.net (Ray Dillinger)
Date: Wed, 25 May 2005 08:16:03 GMT
Subject: What are OOP's Jargons and Complexities?
In-Reply-To: <9tKdnT-wKq24Uw7fRVn-pA@rcn.net>
References: <1116843761.619249.144790@g47g2000cwa.googlegroups.com>
	<bAske.14563$yx.14338@fe08.lga> <3584469.Aerji1NdQr@yahoo.com>
	<3cWdnbtAM6aZ6g_fRVn-2w@rcn.net>
	<878y24yhst.fsf@ivanova.rotty.yi.org>
	<3fh93fF7set5U1@news.dfncis.de> <9tKdnT-wKq24Uw7fRVn-pA@rcn.net>
Message-ID: <7vWke.2017$W51.14781@typhoon.sonic.net>

Wibble wrote:
> Thats how common lisp specifies a vector.
> 
> Andreas, your link indicates that lisp is a Weakly typed language not
> strong.  Theres no compile time type semantics, at least in CommonLisp,
> MacLisp, ZetaLisp or FranzLisp.
> 
> (setq foo #(1 2 3))
> (setq foo 1)
> (setq foo "Whatever")
> 
> 
> Theres no type associated with foo, only with what the variable is
> currently referencing.
> 
>  From your link:
>   When the types detected or declared are strictly enforced by the
>   language's semantics, the language is strongly-typed.
>   when the semantics of the language allows for inconsistencies between
>   the compile-time type and the run-time type, the language is
>   weakly-typed.


I think that such terms of art are sufficiently broad and
subject to interpretation that it is now necessary for each
researcher to say exactly what they mean by a claim placing
a language in a category. That definition must be taken
into account when interpreting the claims that particular
paper makes about those language categories.

That so many researchers have chosen to use the same terms
(static, dynamic, strongly, weakly ... ) to describe subtly
different things is distressing.

				Bear







From roy at panix.com  Fri May 27 09:27:38 2005
From: roy at panix.com (Roy Smith)
Date: Fri, 27 May 2005 09:27:38 -0400
Subject: write to the same file from multiple processes at the same time?
References: <e3617$429713d7$3eb01f24$9096@news.flashnewsgroups.com>
	<roy-29C1D4.09142527052005@reader1.panix.com>
	<XOqdnU5dNq_vgwrfRVn-rg@powergate.ca>
Message-ID: <roy-75EA44.09273827052005@reader1.panix.com>

Peter Hansen <peter at engcorp.com> wrote:
> The OP was probably on the right track when he suggested that things 
> like SQLite (conveniently wrapped with PySQLite) had already solved this 
> problem.

Perhaps, but a relational database seems like a pretty heavy-weight 
solution for a log file.


From fredrik at pythonware.com  Fri May  6 14:27:09 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Fri, 6 May 2005 20:27:09 +0200
Subject: hard memory limits
References: <d5f9jl$k6d$1@domitilla.aioe.org>
	<86vf5w5tkz.fsf@guru.mired.org><d5g94e$8d0$1@sea.gmane.org>
	<200505061052.28325.jstroud@mbi.ucla.edu>
Message-ID: <d5gch5$ld1$1@sea.gmane.org>

James Stroud wrote:

> > does Mac OS X ship with memory limits set by default?  isn't that
> > a single-user system?
>
> Dear original poster or whoever is interested in OS X:
>
> OS X is not a single user system. It is BSD based unix. And its fv at king
> sweeeeeeeeeeeeeet! (Though I'm using only Linux right now :o/

Well, Apple's marketing materials contain no signs whatsoever that the
systems Apple sells are designed for massive numbers of users, compared
to systems from RedHat, Sun, HP, etc.  (if you look at apple.com in this
very moment, it talks a lot about "your mac" and "your desktop" and "your
computer", not "the mac/desktop/computer you share with hundreds of
other users").

So why would Apple insist on setting unusably low process limits, when
the others don't?

</F>





From pdemb at gazeta.pl  Sun May 15 17:16:16 2005
From: pdemb at gazeta.pl (Peter Dembinski)
Date: Sun, 15 May 2005 23:16:16 +0200
Subject: Precision?
References: <1116165159.269252.117830@g14g2000cwa.googlegroups.com>
Message-ID: <87u0l4yyu7.fsf@hector.domek>

"Steffen Gl?ckselig" <usenet at gungfu.de> writes:

> Hello,
>
> I've just wanted to check Python's abilities as a calculator and this
> is what came out:
>
>>>> 1.0 + 3.0 + 4.6
> 8.5999999999999996
>
> Ehm, how could I get the intuitively 'correct' result of - say - 8.6?
> ;-)

This is as correct as your computer's FPU can made it :)

-- 
http://www.peter.dembinski.prv.pl


From newstonne at web.de  Wed May 11 05:37:59 2005
From: newstonne at web.de (Roland Heiber)
Date: Wed, 11 May 2005 11:37:59 +0200
Subject: Serving binary data from a cgi-script
In-Reply-To: <1115802987.501881.282520@g14g2000cwa.googlegroups.com>
References: <1115802987.501881.282520@g14g2000cwa.googlegroups.com>
Message-ID: <d5sjpk$hnl$1@news.web.de>

Thomas W wrote:
>   print d

Hi,

use sys.stdout.write instead, print is adding linebreaks ...

HtH, Roland


From skip at pobox.com  Sat May  7 18:25:28 2005
From: skip at pobox.com (Skip Montanaro)
Date: Sat, 7 May 2005 17:25:28 -0500
Subject: Trouble saving unicode text to file
In-Reply-To: <1115500976.571232.76100@z14g2000cwz.googlegroups.com>
References: <1115500976.571232.76100@z14g2000cwz.googlegroups.com>
Message-ID: <17021.16472.618978.804141@montanaro.dyndns.org>


    Svennglenn> Traceback (most recent call last):
    Svennglenn>   File "D:\Documents and
    Svennglenn> Settings\Daniel\Desktop\Programmering\aaotest\aaotest2\aaotest2.pyw",
    Svennglenn> line 5, in ?
    Svennglenn>     titel = unicode(titel)
    Svennglenn> UnicodeDecodeError: 'ascii' codec can't decode byte 0xe5 in position 0:
    Svennglenn> ordinal not in range(128)

Try:

    import codecs

    titel = "???"
    titel = unicode(titel, "iso-8859-1")
    fil = codecs.open("testfil.txt", "w", "iso-8859-1")
    fil.write(titel)
    fil.close()

Skip


From peter at engcorp.com  Tue May 10 21:33:18 2005
From: peter at engcorp.com (Peter Hansen)
Date: Tue, 10 May 2005 21:33:18 -0400
Subject: Encryption with Python?
In-Reply-To: <mailman.314.1115758730.29826.python-list@python.org>
References: <1115324411.952821.150780@o13g2000cwo.googlegroups.com><001301c552db$dd19d3e0$0201a8c0@mcuf7>	<d5i0as$ejd$1@sea.gmane.org><009901c552fb$220132e0$0201a8c0@mcuf7>	<d5ier2$hqa$1@sea.gmane.org><mailman.213.1115652248.29826.python-list@python.org><7x8y2oyyhf.fsf@ruckus.brouhaha.com><mailman.234.1115676887.29826.python-list@python.org>	<7xvf5sqa3j.fsf@ruckus.brouhaha.com>
	<mailman.314.1115758730.29826.python-list@python.org>
Message-ID: <5amdnbPrL_uT_BzfRVn-tQ@powergate.ca>

Anthra Norell wrote:
> From: "Paul Rubin" <"http://phr.cx"@NOSPAM.invalid>
>>......
>>Since good encryption schemes that don't have significant performance
>>penalties are widely available, why mess with a crap scheme EVER?  Why
>>use a solution that "might or might not be adequate" when you can use
>>one that's definitely ok?
>>......
> 
> Why indeed?---Why run a marathon? 

To demonstrate your physical supremacy over your inferiors.

> Why have kids? 

Because you forgot to wear protection.

> Why shave? 

Your wife insists?  Mine does...

 > Why play chess?

To demonstrate your intellectual supremacy over your inferiors.

> Why sprinkle the lawn? 

Too much beer and there's a line-up to use the john?

> Or as my friend Sergio's favorite line went: Why you
> jerks cook your own muck when there are so many good restaurants in town?

To demonstrate your culinary supremacy over your inferiors?

> His was definitely the best when it went out of business.

(Hmm... so is my business doing merely "well" if it's losing money?)

Back to Paul's question then: why use an unreliable and 
probably-useless-for-all-but-spawning-lengthy-but-educational-threads 
encryption method when there are relatively reliable and, uh, less 
discussed and non-edifying, uh... well, you get the picture. ;-)

-Peter


From peter at engcorp.com  Fri May 20 16:04:26 2005
From: peter at engcorp.com (Peter Hansen)
Date: Fri, 20 May 2005 16:04:26 -0400
Subject: circular imports
In-Reply-To: <1116599898.308012.71220@g47g2000cwa.googlegroups.com>
References: <1116599898.308012.71220@g47g2000cwa.googlegroups.com>
Message-ID: <1sidnVLRi8Zb3xPfRVn-jg@powergate.ca>

qhfgva at gmail.com wrote:
> I'm working with a large code base that I'm slowly trying to fix
> "unpythonic" features of.
[...]
> Insead I'd rather have PYTHONPATH already include '/general/path/'
> and then just use:

One option you might not have considered, which I find more "pythonic" 
than environment variables, is to use .pth files as documented at the 
top of the site.py module in the standard library (or in the online docs 
for "site").

You can also sometimes remove even more problems by using a 
sitecustomize.py file in addition to the .pth files.  (Also in the docs, 
I believe, under "site".)

-Peter


From axel at white-eagle.co.uk  Fri May 13 09:56:47 2005
From: axel at white-eagle.co.uk (axel at white-eagle.co.uk)
Date: Fri, 13 May 2005 13:56:47 GMT
Subject: New Python regex Doc
References: <1113301533.054410.203710@z14g2000cwz.googlegroups.com>
	<1113908069.264676.207090@g14g2000cwa.googlegroups.com>
	<1115328523.852744.110390@f14g2000cwb.googlegroups.com>
	<1115423751.016177.250650@o13g2000cwo.googlegroups.com>
	<1115444726.627426.172260@g14g2000cwa.googlegroups.com>
	<1115508491.462229.294020@o13g2000cwo.googlegroups.com>
	<mailman.155.1115511845.29826.python-list@python.org>
	<1115972089.922875.108380@g14g2000cwa.googlegroups.com>
	<Xns96552462DEE8Fcastleamber@130.133.1.4>
Message-ID: <zm2he.24808$Jc5.23644@fe1.news.blueyonder.co.uk>

In comp.lang.perl.misc John Bokma <john at castleamber.com> wrote:
> If you had really any point, you didn't need to swear in every third 
> sentence. Nor bother so many groups with your rants.
 
> If you think it can be done better, pick up a part of documentation, and 
> rewrite it. To make it very hard, you are not allowed to use fuck, fucking,  
> fucked, ass, asses or other similar words, which in the way you use them 
> show quite some lack of both creativity and writing skills.

Oh please let him use an ass... then we might not see him again for
several months nutil his donley comes over the hill.

Axel

 


From michele.simionato at gmail.com  Mon May  2 04:59:43 2005
From: michele.simionato at gmail.com (Michele Simionato)
Date: 2 May 2005 01:59:43 -0700
Subject: MRO problems with diamond inheritance?
In-Reply-To: <1115008163.017331.306290@o13g2000cwo.googlegroups.com>
References: <d53jqq$b88$1@newsg4.svr.pol.co.uk>
	<1114987828.055744.250090@z14g2000cwz.googlegroups.com>
	<1115004565.128735.58670@o13g2000cwo.googlegroups.com>
	<1115008163.017331.306290@o13g2000cwo.googlegroups.com>
Message-ID: <1115024383.848366.64190@z14g2000cwz.googlegroups.com>

M.E. Farmer:

>You would be surprised how many answers you can squeeze out of that
one
>URL.
>That whole page is worth a month of study( for me anyway ).

One month only? You must be pretty smart, one could easily extract
a book from that page ;)

>I am still trying to grasp the 'purpose' of classmethods.

In my personal opinion classmethods and staticmethods could (and
possibly
should) be removed from the language; a part for that consideration,
the typical
use for classmethods is as object factories, to provide alternative
constructors.

           Michele Simionato



From ville at spammers.com  Thu May 19 06:24:46 2005
From: ville at spammers.com (Ville Vainio)
Date: 19 May 2005 13:24:46 +0300
Subject: Is Python suitable for a huge, enterprise size app?
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>
	<1116451936.514126.66500@g44g2000cwa.googlegroups.com>
Message-ID: <du7sm0jwm1d.fsf@mozart.cc.tut.fi>

>>>>> "brian" == brian  <brian at mirror.org> writes:

    brian> to build expertise and confidence, etc.  People are more
    brian> important than programming language.

Or so you would think before writing sizeable software in C++.

-- 
Ville Vainio   http://tinyurl.com/2prnb


From dberlin at gmail.com  Mon May 16 13:25:51 2005
From: dberlin at gmail.com (dberlin at gmail.com)
Date: 16 May 2005 10:25:51 -0700
Subject: wxPython and a Control Property Editor
In-Reply-To: <1116188620.303681.282540@g47g2000cwa.googlegroups.com>
References: <1116188620.303681.282540@g47g2000cwa.googlegroups.com>
Message-ID: <1116264351.851757.192660@g14g2000cwa.googlegroups.com>

Please, if anyone can help



From 550283447739 at t-online.de  Sat May 28 08:16:47 2005
From: 550283447739 at t-online.de (Oliver Albrecht)
Date: Sat, 28 May 2005 14:16:47 +0200
Subject: Questions about wxPython...
In-Reply-To: <1117260259.215197.141570@f14g2000cwb.googlegroups.com>
References: <1117260259.215197.141570@f14g2000cwb.googlegroups.com>
Message-ID: <d79mp4$8s2$02$1@news.t-online.com>

Helmutt schrieb:
> Whats the name of the event that occur when I press the
> exit/cross-button on the frame?
> How do I connect a function with that event?

Hi,
I try just to begin the same.
I found this in the docu.

wxApp::OnExit
http://wxwidgets.org/manuals/2.5.3/wx_wxapp.html#wxapponexit

wxWindow::Close http://www.wxpython.org/docs/api/wx.Window-class.html#Close

wxCloseEvent
http://www.wxpython.org/docs/api/wx.CloseEvent-class.html


From fredrik at pythonware.com  Thu May  5 16:16:10 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 5 May 2005 22:16:10 +0200
Subject: How to write this regular expression?
References: <mailman.139.1115189526.6583.python-list@python.org><maednQfrx_iwL-XfRVn-hA@powergate.ca>
	<Av-dnbF5u_SOpOffRVn-vQ@comcast.com>
Message-ID: <d5duhu$uq3$2@sea.gmane.org>

"D H" <a at b.c> wrote:

> > Why do you think you need a regular expression?
> >
> > If another approach that involved no regular expressions worked much
> > better, would you reject it for some reason?
>
> A regular expression will work fine for his problem.
> Just match the digits separated by underscores using a regular
> expression, then afterward check if the values are valid.

you forgot to mention Boo here, Doug.  nice IronPython announcement,
btw.  the Boo developers must be so proud of you.

</F>





From http  Thu May 19 17:25:43 2005
From: http (Paul Rubin)
Date: 19 May 2005 14:25:43 -0700
Subject: Is Python suitable for a huge, enterprise size app?
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>
	<1116443474.565264.176640@g44g2000cwa.googlegroups.com>
	<7xd5rn93zi.fsf@ruckus.brouhaha.com>
	<mailman.198.1116493706.8733.python-list@python.org>
	<d6ij1j$s96$1@panix3.panix.com>
Message-ID: <7xpsvm6h7s.fsf@ruckus.brouhaha.com>

aahz at pythoncraft.com (Aahz) writes:
> Send e-mail to webmaster at python.org -- actually, you can have commit
> privs if you want.

I think I'm going to enter an SF bug on the issue if there isn't
already one.  It's not obvious to me whether a reasonable fix is
possible, but at least it should be tracked.  The current behavior is
weird and confusing.


From exarkun at divmod.com  Sun May  8 20:25:29 2005
From: exarkun at divmod.com (Jp Calderone)
Date: Mon, 09 May 2005 00:25:29 GMT
Subject: __brace__ (PEP?)
In-Reply-To: 0
Message-ID: <20050509002529.15422.1783587549.divmod.quotient.26874@ohm>

On Sun, 8 May 2005 16:29:03 -0700, James Stroud <jstroud at mbi.ucla.edu> wrote:
>Hello All,
>
>If "__call__" allows anobject() and "__getitem__" allows anobject[arange], why
>not have "__brace__" (or some other, better name) for anobject{something}.
>Such braces might be useful for cross-sectioning nested data structures:
>

  See Numeric Python, which uses index slices in multiple dimensions to satisfy this use case.

  While a new syntactic construct could be introduced to provide this feature, the "minimal core, rich library" school of language design suggests that doing so would not be a great idea.

  Jp


From wolfram.kriesing at gmail.com  Fri May 13 08:26:24 2005
From: wolfram.kriesing at gmail.com (Wolfram Kriesing)
Date: Fri, 13 May 2005 14:26:24 +0200
Subject: function with variable arguments
In-Reply-To: <pan.2005.05.13.12.10.09.18787@internode.on.net>
References: <1115977954.266898.141150@g49g2000cwa.googlegroups.com>
	<pan.2005.05.13.12.10.09.18787@internode.on.net>
Message-ID: <965c85e50505130526447979a9@mail.gmail.com>

> def Range(n,m=None,step=1):
>   if m is None:
>     n,m = 0,n+1
>   else:
>     n,m = n,m+1
>   return range(n,m,step)

i like this one. 

coming from php (just a couple weeks ago) its always again interesting
to see how i have to start thinking to program differently, it can be
so much easier with python. i dont want to go back to php!

-- 
cu

Wolfram


From dalke at dalkescientific.com  Thu May 12 22:40:22 2005
From: dalke at dalkescientific.com (Andrew Dalke)
Date: Fri, 13 May 2005 02:40:22 GMT
Subject: Unique Elements in a List
References: <1115676903.432187.294910@z14g2000cwz.googlegroups.com>
	<mailman.241.1115681580.29826.python-list@python.org>
	<87psvzikjk.fsf@titan.staselog.com> <d5qu8p$2iq$1@panix2.panix.com>
	<87mzr0evga.fsf@titan.staselog.com> <42838037$1@nntp0.pdx.net>
Message-ID: <pan.2005.05.13.02.40.21.544604@dalkescientific.com>

Scott David Daniels wrote:
> Again polynomial, not exponential time.  Note that there is no
> polynomial time algorithm with (k < 1), since it takes O(n) time
> to read the problem.

Being a stickler (I develop software after all :) quantum computers
can do better than that.  For example, Grover's algorithm
  http://en.wikipedia.org/wiki/Grover%27s_algorithm
for searching an unsorted list solves the problem in O(N**0.5) time.

Being even more picky, I think the largest N that's been tested
so far is on the order of 5.

				Andrew
				dalke at dalkescientific.com



From scharan20 at gmail.com  Thu May 26 00:31:57 2005
From: scharan20 at gmail.com (Sriek)
Date: 25 May 2005 21:31:57 -0700
Subject: __init__() not called automatically
Message-ID: <1117081917.760603.82610@z14g2000cwz.googlegroups.com>

hi,
i come from a c++ background. i ws happy to find myself on quite
familiar grounds with Python. But, what surprised me was the fact that
the __init__(), which is said to be the equivlent of the constructor in
c++, is not automatically called. I'm sure there must be ample reason
for this. I would like to know why this is so? This is my view is more
burden on the programmer.
Similarly, why do we have to explicitly use the 'self' keyword
everytime?

Every kind of help would be welcome.



From max.derkachev at gmail.com  Thu May  5 04:35:09 2005
From: max.derkachev at gmail.com (Max Derkachev)
Date: 5 May 2005 01:35:09 -0700
Subject: Adding new methods to new-style classes dynamically
Message-ID: <1115282109.707219.163660@f14g2000cwb.googlegroups.com>

Good day to all.

Some time ago I'd been playing with a framework which uses dynamic
class creation havily. Say, I could do:

class A:
    pass

# I method name is dynamic
meth_name = 'foo'

#method code can also be dynamic - any executable object will be good
enough
func = lambda self: self.__class__.__name__

A.__dict__[meth_name] = func
a = A()
print a.foo()
>> A
# methods could be added/changed at runtime, without re-instantination
A.__dict__[meth_name] = lambda self: type(self)
print a.foo()
>> <type 'instance'>

#well, try this with the new-style class
class A(object):
    pass

# the new-style __dict__ is a dictproxy object
A.__dict__[meth_name] = lambda self: type(self)
>>Traceback (most recent call last):
>>  File "<interactive input>", line 1, in ?
>>TypeError: object does not support item assignment


Of course, I can do
A.foo = some_executable_object
But that does help when a dynamic method name is needed.
Another option is:
exec('A.%s = %s'%('foo', 'some_executable_option'))
But I don't like eval'ling things :)

Is there other way to add/change methods to new-style classes
dynamically?



From fredrik at pythonware.com  Fri May  6 13:29:12 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Fri, 6 May 2005 19:29:12 +0200
Subject: hard memory limits
References: <d5f9jl$k6d$1@domitilla.aioe.org><mailman.88.1115374567.29826.python-list@python.org>
	<86vf5w5tkz.fsf@guru.mired.org>
Message-ID: <d5g94e$8d0$1@sea.gmane.org>

Mike Meyer wrote:

> Without platform information, it's hard to say. On a modern Unix
> system, you only run into system resource limits when the system is
> heavily loaded. Otherwise, you're going to hit per-process limits. In
> the latter case, adding RAM or swap won't help at all. Raising the
> per-process limits is the solution.

does Mac OS X ship with memory limits set by default?  isn't that
a single-user system?

</F>





From vegeta.z at gmail.com  Mon May  2 20:10:05 2005
From: vegeta.z at gmail.com (vegetax)
Date: Mon, 02 May 2005 20:10:05 -0400
Subject: cgi "print statement" in multithreaded enviroment?
Message-ID: <d56f4t$sch$1@sea.gmane.org>


How can i use cgi'like print statement in a multitreaded web framework?
each thread has its own Servlet instance with request/response objects,
sys.stdout = self.response(which is a file like object) wont work because
all threads will set the same file object and it will be a concurrence
mess.

I am out of ideas here,so any hacks welcome =)



From luis_lupe2XXX at netvisaoXXX.pt  Tue May 17 20:32:25 2005
From: luis_lupe2XXX at netvisaoXXX.pt (Luis P. Mendes)
Date: Wed, 18 May 2005 01:32:25 +0100
Subject: speeding up Python script
Message-ID: <3evgolF56gtkU3@individual.net>

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Hi,

I have a 1000 line python script that takes many hours to finish.  It is
running with six inside 'for' loops.

I've searched the net for ways to speed up the proccess.

Psyco improves performance around 3% in this case which is not good enough.

How can I dramatically improve speed?

I tried to find some tool that converts Python to C automatically but
couldn't.  As I don't know C, I think that weave and PyInline for
example are out of the solution.

I'm using Linux.

Luis
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.4 (GNU/Linux)
Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org

iD8DBQFCio0YHn4UHCY8rB8RAoe0AKC4rj/dxE2HGw4xtCMEmVGDgrGEEwCghO1r
+Rkgx8j1BzD0Lxq/iPey23s=
=xv4O
-----END PGP SIGNATURE-----


From steve at holdenweb.com  Tue May 17 18:40:17 2005
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 17 May 2005 18:40:17 -0400
Subject: Representing ambiguity in datetime?
In-Reply-To: <200505171738.30123.hancock@anansispaceworks.com>
References: <200505171738.30123.hancock@anansispaceworks.com>
Message-ID: <d6drr5$oj2$1@sea.gmane.org>

Terry Hancock wrote:
> What do you do when a date or time is
> incompletely specified?  ISTM, that as it is, there is no
> formal way to store this --- you have to guess, and there's
> no way to indicate that the guess is different from solid
> information.  As a result, I have sometimes had to abandon
> datetime, even though it seemed like the logical choice for
> representing data.
> 
> E.g. I might have information like "this paper was published
> in May 1997".  There's no way to write that with datetime,
> is there?  Even if I just use the "date" object instead of 
> datetime, I still have to actually specify something like 
> May 1, 1997 --- fabricating data, which is frequently
> undesireable (later on, I might find information saying that
> it was actually published May 23, 1997 and I might want
> to update the earlier one, or simply evaluate them as 
> "equal" since they are, to within the precision given --- 
> for example, I might be trying to decide that two database
> entries are really duplicate references to the same paper).
> 
> I know that this is somewhat theoretically stated, but I 
> have run into to concrete problems along the lines of
> the above.
> 
> I'd say this is analogous to how you might use "None"
> rather than "0" to represent an integer if you don't know
> it's value (rather than knowing that it is zero).  ISTM, you
> ought to be able to specify a date as, e.g.:
> 
> d = datetime.date(2005, 5, None)
> 
> I realize there might be some complexity with deciding
> how to handle datestamp math, but as this situation
> occurs frequently in real life, it seems like it shouldn't
> be avoided.
> 
> How do other people deal with this kind of problem?
> 
It's not a problem I've had to deal with, but it seems that the simplest 
way to handle it would be to store the value as a datetime and a format. 
That way you can explicitly use 1 or 0 as a default (as appropriate) to 
create the datetime and then ensure it's represented only to the 
required degree of precision by using the supplied format.

Don't know whether this will work for you, just a thought.

regards
  Steve
-- 
Steve Holden        +1 703 861 4237  +1 800 494 3119
Holden Web LLC             http://www.holdenweb.com/
Python Web Programming  http://pydish.holdenweb.com/



From percivall at gmail.com  Fri May 20 02:46:12 2005
From: percivall at gmail.com (Simon Percivall)
Date: 19 May 2005 23:46:12 -0700
Subject: readline module and white-space
In-Reply-To: <1116543678.667632.47670@f14g2000cwb.googlegroups.com>
References: <1116543678.667632.47670@f14g2000cwb.googlegroups.com>
Message-ID: <1116571571.998952.145210@g44g2000cwa.googlegroups.com>

Take a look at readline.get_completer_delims() and
readline.set_completer_delims().



From jack at performancedrivers.com  Wed May 18 16:47:20 2005
From: jack at performancedrivers.com (Jack Diederich)
Date: Wed, 18 May 2005 16:47:20 -0400
Subject: Is Python suitable for a huge, enterprise size app?
In-Reply-To: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>
Message-ID: <20050518204720.GB15853@performancedrivers.com>

On Wed, May 18, 2005 at 08:37:00AM -0700, john67 wrote:
> The company I work for is about to embark on developing a commercial
> application that will cost us tens-of-millions to develop.  When all is
> said and done it will have thousands of  business objects/classes, some
> of which will have hundreds-of-thousands of instances stored in a DB.
> Our clients will probably have somewhere between 50-200 users working
> on the app during the day, possibly in mutiple offices, and then a
> large number of batch processes will have to run each night.  It will
> also need to have a web interface for certain users.  It needs to be
> robust, easy to maintain, and able to be customized for each client.
[snip]

The technical specifications seem OK, these aren't language constraints
in python more than any other language.  The people constraints...

Tens of millions to develop?  Whoa - it is easy for me to predict absolute
and complete failure right off the bat no matter the language (but only 
after incurring cost overruns).  If your head is anywhere near the chopping
block I suggest proffering a "proof of concept" version first.  If you
can't do a first version in six months with a team of six people it is a sign
that you don't really know what you want.  The final version might be
bigger and have more features - but 10M of features is pie in the sky stuff.  
Everyone involved must have wild dreams about how awesome the final version 
will be, and all those dreams diverge.

Ten million is ten guys writing for two years (top notch at US prices) to come
up with a product from sratch.  Tens of millions is?  Best of luck.

-jackdied


From antonio.majo at gmail.com  Wed May 11 18:06:36 2005
From: antonio.majo at gmail.com (1comunicato)
Date: 11 May 2005 15:06:36 -0700
Subject: New Web technology
Message-ID: <1115849195.970935.195090@g43g2000cwa.googlegroups.com>

Information XHTML1.1: http://www.1info.com/1computer/1work_e.html



From sjmachin at lexicon.net  Fri May  6 23:32:36 2005
From: sjmachin at lexicon.net (John Machin)
Date: Sat, 07 May 2005 13:32:36 +1000
Subject: hard memory limits
References: <d5f9jl$k6d$1@domitilla.aioe.org>	<mailman.88.1115374567.29826.python-list@python.org>	<d5gphu$hij$1@domitilla.aioe.org>
	<mailman.115.1115419109.29826.python-list@python.org>
	<d5h4eb$g5v$1@domitilla.aioe.org> <427c258b.868346285@news.oz.net>
Message-ID: <lpco719k5lttbn1m9jj3shi08q5h62oe45@4ax.com>

On Sat, 07 May 2005 02:29:48 GMT, bokr at oz.net (Bengt Richter) wrote:

>On Sat, 07 May 2005 11:08:31 +1000, Maurice LING <mauriceling at acm.org> wrote:
>>
>>It doesn't seems to help. I'm thinking that it might be a SOAPpy 
>>problem. The allocation fails when I grab a list of more than 150k 
>>elements through SOAP but allocating a 1 million element list is fine in 
>>python.
>>
>>Now I have a performance problem...
>>
>>Say I have 3 lists (20K elements, 1G elements, and 0 elements), call 
>>them 'a', 'b', and 'c'. I want to filter all that is in 'b' but not in 
>>'a' into 'c'...
>>
>> >>> a = range(1, 100000, 5)
>> >>> b = range(0, 1000000)
>> >>> c = []
>> >>> for i in b:
>>...     if i not in a: c.append(i)
>>...
>>
>>This takes forever to complete. Is there anyway to optimize this?
>>
>Checking whether something is in a list may average checking equality with
>each element in half the list. Checking for membership in a set should
>be much faster for any significant size set/list. I.e., just changing to
>
>      a = set(range(1, 100000, 5))
>
>should help. I assume those aren't examples of your real data ;-)
>You must have a lot of memory if you are keeping 1G elements there and
>copying a significant portion of them. Do you need to do this file-to-file,
>keeping a in memory? Perhaps page-file thrashing is part of the time problem?

Since when was 1000000 == 1G??

Maurice, is this mucking about with 1M or 1G lists in the same
exercise as the "vm_malloc fails when allocating a 20K-element list"
problem? Again, it might be a good idea if you gave us a little bit
more detail. You haven't even posted the actual *PYTHON* error message
and stack trace that you got from the original problem. In fact,
there's a possible interpretation that the (system?) malloc merely
prints the vm_malloc message and staggers on somehow ...

Regards,
John


From rkern at ucsd.edu  Wed May 11 09:20:50 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Wed, 11 May 2005 06:20:50 -0700
Subject: Encryption with Python?
In-Reply-To: <-eednXIDvqh9nh_fRVn-rg@powergate.ca>
References: <1115324411.952821.150780@o13g2000cwo.googlegroups.com><001301c552db$dd19d3e0$0201a8c0@mcuf7>	<d5i0as$ejd$1@sea.gmane.org><009901c552fb$220132e0$0201a8c0@mcuf7>	<d5ier2$hqa$1@sea.gmane.org><mailman.213.1115652248.29826.python-list@python.org><7x8y2oyyhf.fsf@ruckus.brouhaha.com><mailman.234.1115676887.29826.python-list@python.org>	<7xvf5sqa3j.fsf@ruckus.brouhaha.com>	<mailman.314.1115758730.29826.python-list@python.org>	<5amdnbPrL_uT_BzfRVn-tQ@powergate.ca>	<mailman.326.1115784676.29826.python-list@python.org>
	<-eednXIDvqh9nh_fRVn-rg@powergate.ca>
Message-ID: <d5t0dg$ct1$1@sea.gmane.org>

Peter Hansen wrote:

>>Education is a process one must engage in. You don't just step in it.
> 
> The education to which I was referring was that which _most_ of us just 
> received by reading Paul's and your replies, not from anything in the 
> OP's postings.  ;-)

Okay, I'll buy that.  :-)

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From sjmachin at lexicon.net  Wed May 18 17:07:56 2005
From: sjmachin at lexicon.net (John Machin)
Date: Thu, 19 May 2005 07:07:56 +1000
Subject: Comparing 2 similar strings?
References: <24a6d$428b9c10$d1b717f8$2300@PRIMUS.CA>
	<428af314@usenet01.boi.hp.com>
Message-ID: <e6bn815cc5pd0atmedigu7licdmsndmthm@4ax.com>

On Wed, 18 May 2005 13:45:30 -0700, Don <donald.welch at NOSPAM.hp.com>
wrote:

>http://www.personal.psu.edu/staff/i/u/iua1/python/apse/

The above is broken, not meeting one of the elementary conditions for
a distance metric:

distance(a, b) == distance(b, a)

Quoting from its docs:
 |  Note: The definition of the goodness of an approximate match is
the 
 |  number of steps required to bring the string pattern to a form
that is 
 |  entirely contained in the string to which it is being matched.

Note: "entirely contained in", rather than "equal to". Now read on:


 | The mathing 
 |  is not commutative. The pattern that you instantiate the class
with will be 
 |  matched against the input. For example the word "funky" can be
made to 
 |  match the word "funnybone" with an edit distance of one. However,
using 
 |  "funnybone" as a pattern that will be  matched to "funky" the
distance 
 |  will become five.
 |  
 |  Example:
 |  
 |  >>> from Apse import Approx
 |  >>> a = Approx("funky")
 |  >>> a.dist("funnybone")
 |  1
 |  >>> a = Approx("funnybone")
 |  >>> a.dist("funky")
 |  5




From martin.witte at gmail.com  Mon May  9 07:04:08 2005
From: martin.witte at gmail.com (wittempj@hotmail.com)
Date: 9 May 2005 04:04:08 -0700
Subject: regarding try/except usa
In-Reply-To: <mailman.196.1115635839.29826.python-list@python.org>
References: <mailman.196.1115635839.29826.python-list@python.org>
Message-ID: <1115636648.870259.43120@o13g2000cwo.googlegroups.com>

Well, there is a lot to say about this subject. Start reading with
this: http://docs.python.org/tut/node10.html



From fredrik at pythonware.com  Tue May 10 02:57:13 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 10 May 2005 08:57:13 +0200
Subject: Exception in Python 2.3.3 Interpreter
References: <1114434259.853654.272420@z14g2000cwz.googlegroups.com><d5n76t$pe0$2@news.mch.sbs.de><mailman.202.1115642452.29826.python-list@python.org>
	<d5ph21$2l9$2@news.mch.sbs.de>
Message-ID: <d5plij$vtj$1@sea.gmane.org>

(trying again)

"Saravanan D" wrote:

> > > 03 023ffaa4 1e013182 00000000 055b1250 00637470 python23!cmp_outcome(int
> op
> > > = 88026108, struct _object * v = 0x00000001, struct _object * w =
> > > 0x00000000)+0xa9 [F:\Python-2.3.3\Python-2.3.3\Python\ceval.c @ 3880]
> > > 04 023ffb18 1e016ba4 014f3318 00000002 0099f170
> python23!eval_frame(struct
> > > _frame * f = 0x053f2bfc)+0x542
> [F:\Python-2.3.3\Python-2.3.3\Python\ceval.c
> > > @ 1965]
> > > 05 023ffb30 1e016a69 0099f170 023ffb7c 00000002
> > > python23!fast_function(struct _object * func = <Memory access error>,
> struct
> > > _object *** pp_stack = <Memory access error>, int n = <Memory access
> error>,
> > > int na = <Memory access error>, int nk = <Memory access error>)+0x94
> >
> > the above doesn't look very healthy.  does your application involve
> > non-standard extensions (including extensions you've written your-
> > self)?  does the extensions contain callbacks into Python code?
> >
>
> My application uses extension modules which devliers the callbacks to Python
> Code. Im using SWIG 1.3.19 version to generate relevant python interfaces
> for the C++ code.

how are you accessing the callbacks?  if you're doing that from threads
created at the C++ level, you must make sure that the thread state is
properly set up.  see:

    http://www.python.org/doc/2.4.1/api/threads.html

if you're registering the callbacks from Python (via SWIG:ed "register"
calls), you must keep track of the thread state, so that callbacks run
in the same state as they were registered in.

</F>





From thomas at eforms.co.nz  Wed May 11 17:23:10 2005
From: thomas at eforms.co.nz (Thomas)
Date: Thu, 12 May 2005 09:23:10 +1200
Subject: urllib open error
Message-ID: <20050511212051.8196937025@mail.tintz.co.nz>

Hi All,

 

Just an update on my urllib open error..  It's the proxy setup on my machine
which was causing the problem.

 

Note: soappy doesn't use the proxy by default while the urllib do..

 

 

Cheers

Thomas

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From timothy at open-networks.net  Mon May  9 19:53:25 2005
From: timothy at open-networks.net (Timothy Smith)
Date: Tue, 10 May 2005 09:53:25 +1000
Subject: py23-pysvn-svn114-1.2.0-415.exe  << won't load on win98
Message-ID: <427FF7F5.30807@open-networks.net>

hello there,
i get the following error when attempting to load pysvn on a win98 system

Traceback (most recent call last):
>  File "PubWare.py", line 11, in ?
>  File "Main.pyc", line 46, in ?
>  File "pysvn\__init__.pyc", line 12, in ?
>  File "pysvn\_pysvn.pyc", line 9, in ?
>  File "pysvn\_pysvn.pyc", line 7, in __load
>ImportError: DLL load failed: A device attached to the system is not 
>functioning.

i installed the package on a windows xp system, and on other xp systems
it is also fine, however on win98 systems it errors


ok i have installed win98 on a test machine and sure enough i get the 
exact same error on trying to import pysvn.

it's python 2.3, pysvn 1.2.0 build 415. it's a totally virgin install, 
nothing but those 2 are installed on the system. note that is' standard 
win98, not win98 SE

now how do i start trying to track down whats wrong and do you think it 
will be possible to fix it?





From newsgroups at jhrothjr.com  Mon May 16 22:16:25 2005
From: newsgroups at jhrothjr.com (John Roth)
Date: Mon, 16 May 2005 20:16:25 -0600
Subject: Parsing text into dates?
References: <1116277171.492587.38080@g47g2000cwa.googlegroups.com>
Message-ID: <118il01fe2qgr76@news.supernews.com>

"Thomas W" <thomas.weholt at gmail.com> wrote in message 
news:1116277171.492587.38080 at g47g2000cwa.googlegroups.com...
> I'm developing a web-application where the user sometimes has to enter
> dates in plain text, allthough a format may be provided to give clues.
> On the server side this piece of text has to be parsed into a datetime
> python-object. Does anybody have any pointers on this?
>
> Besides the actual parsing, my main concern is the different locale
> date formats and how to be able to parse those strange us-like
> "month/day/year" compared to the clever and intuitive european-style
> "day/month/year" etc.
>
> I've searched google, but haven't found any good referances that helped
> me solve this problem, especially with regards to the locale date
> format issues.

There is no easy answer if you want to be able to enter three
numbers. There are two answers that work, although there will
be a lot of complaining. One is to use the international yyyy-mm-dd
form, and the other is to accept a 4 digit year, an alphabetic month
and a two digit day in any order.

Otherwise, if you get 4 digits as the first component, and it passes your
validation (whatever that is) for reasonable years, you're probably
pretty safe to assume that you've got yyyy-mm-dd. Otherwise
if you can't get a clean answser (one is > 31, one is 12 < x < 32
and one is <= 12, just give them a list of possibilities and politely
suggest that they enter it as yyyy-mm-dd next time.

I don't validate separators. As long as there is something that isn't a
number or a letter, it's a separator and which one doesn't matter. At
times I've even taken the transition between a digit and a letter as
a separator.

John  Roth

> Best regards,
> Thomas
> 



From ray.slakinski at gmail.com  Tue May 10 12:31:04 2005
From: ray.slakinski at gmail.com (Ray Slakinski)
Date: 10 May 2005 09:31:04 -0700
Subject: Filenames of files downloaded via urlretrieve that have been
	redirected
Message-ID: <1115742664.149389.122260@f14g2000cwb.googlegroups.com>

I got a small issue, I am using urllib.urlretreive to download files
but in some cases I'm downloading from a CGI that is redirecting
urlretrieve to a different url.

Example:

urllib.urlretreive('http://someurl.com/files.asp?file=55',
'tempFileName.tmp')

Is there a way to know what filename files.asp is redirecting to so I
can rename tempFileName.tmp to the correct name?

Thanks in advance,
Ray



From steve at REMOVETHIScyber.com.au  Thu May 19 11:14:42 2005
From: steve at REMOVETHIScyber.com.au (Steven D'Aprano)
Date: Fri, 20 May 2005 01:14:42 +1000
Subject: Comparing 2 similar strings?
References: <24a6d$428b9c10$d1b717f8$2300@PRIMUS.CA>
	<428af314@usenet01.boi.hp.com>
	<e6bn815cc5pd0atmedigu7licdmsndmthm@4ax.com>
Message-ID: <pan.2005.05.19.15.14.41.491478@REMOVETHIScyber.com.au>

On Thu, 19 May 2005 07:07:56 +1000, John Machin wrote:

> On Wed, 18 May 2005 13:45:30 -0700, Don <donald.welch at NOSPAM.hp.com>
> wrote:
> 
>>http://www.personal.psu.edu/staff/i/u/iua1/python/apse/
> 
> The above is broken, not meeting one of the elementary conditions for
> a distance metric:
> 
> distance(a, b) == distance(b, a)

I agree that this makes the edit distance broken in the context of text
strings, but you should be aware that distance is only commutative if
there are no constraints on travel. If you've ever driven around cities
like Sydney that use lots of one-way streets, you will know that the
distance from point A to point B is not necessarily the same as the
distance from B back to A.


-- 
Steven




From andrea.gavana at agip.it  Tue May 10 12:53:30 2005
From: andrea.gavana at agip.it (andrea.gavana at agip.it)
Date: Tue, 10 May 2005 18:53:30 +0200
Subject: A Faster Way...
Message-ID: <OFFDC41720.16387EDC-ONC1256FFD.005C4DB8-C1256FFD.005CCA1C@eni.pri>

Hello NG,

      it is probably a beginner question, but I didn't solve it without
for-loops, and I am unable to determine if there is a faster way (probably
using some built-in function) to do this task. I have to speed up a
wxPython code that uses a lot of string concatenation (and uses these
strings to build some Fancy StaticText Controls). I found a way, but I need
a little bit of help from you, NG.

If I simplify the problem, suppose I have 2 lists like:

a = range(10)
b = range(20,30)

What I would like to have, is a "union" of the 2 list in a single tuple. In
other words (Python words...):

c = (0, 20, 1, 21, 2, 22, 3, 23, 4, 24, 5, 25, .....

and so on.

Sorry if it seems an homework assignment.

Thanks to you all.

Andrea
------------------------------------------------------------------------------------------------------------------------------------------
 Message for the recipient only, if received in error, please notify the
sender and read http://www.eni.it/disclaimer/




From could.net at gmail.com  Wed May  4 08:22:10 2005
From: could.net at gmail.com (could ildg)
Date: Wed, 4 May 2005 20:22:10 +0800
Subject: How to write this regular expression?
In-Reply-To: <slrnd7h8of.o1c.apardon@rcpc42.vub.ac.be>
References: <mailman.139.1115189526.6583.python-list@python.org>
	<1115195508.025605.53690@o13g2000cwo.googlegroups.com>
	<mailman.144.1115199265.6583.python-list@python.org>
	<slrnd7h8of.o1c.apardon@rcpc42.vub.ac.be>
Message-ID: <311b5ce1050504052252e7e50@mail.gmail.com>

I can tell you that this is not any homework at all,
I think it by myself.

I like this maillist, it helped me a lot. but some guys as you look 
weird.
On 4 May 2005 10:25:20 GMT, Antoon Pardon <apardon at forel.vub.ac.be> wrote:
> Op 2005-05-04, could ildg schreef <could.net at gmail.com>:
> > Does it matter whether it is a homework?
> 
> Yes, because if other do your homework for you, you wont
> have learned anything from it.
> 
> > Why do you look down upon homework?
> 
> Who says he does. That he is not willing to do your homework
> for you, doesn't imply he looks down on it.
> 
> > Everyone can do his homework well without any problems in your logic?
> 
> There is difference in asking for help on how to solve a
> problem yourself and asking for the solution.
I read the document about re on python tommorow, and when I want to
use it to settle a problem, I found it not so easy, so I raise the question
here. I didn't say how I thought about it, because I don't want the question
to be too long. But a short question doesn't mean that I am too lazy
and I didn't even think about it. If you think I'm a kind of person
you hate to help,
you needn't.
> 
> --
> Antoon Pardon
> --
> http://mail.python.org/mailman/listinfo/python-list
>


From harlinseritt at yahoo.com  Sun May  8 12:51:28 2005
From: harlinseritt at yahoo.com (Harlin Seritt)
Date: 8 May 2005 09:51:28 -0700
Subject: SGMLlib module
In-Reply-To: <G5udnc_q7Z4fjuPfRVn-hg@powergate.ca>
References: <1115558176.212693.45280@z14g2000cwz.googlegroups.com>
	<G5udnc_q7Z4fjuPfRVn-hg@powergate.ca>
Message-ID: <1115571088.364354.241270@g14g2000cwa.googlegroups.com>

Thanks for the help, I just didn't like the way that SGMLlib forces one
to instantiate a class to do this (or httplib for that matter). I
looked at those links you graciously sent (thanks!) but didn't like
them. At any rate, I went ahead and wrote my own. Thank goodness that
it's easy to parse with Python on your own!

Thanks for the help,

Harlin Seritt



From jcribbs at twmi.rr.com  Tue May  3 21:42:49 2005
From: jcribbs at twmi.rr.com (Jamey Cribbs)
Date: Tue, 03 May 2005 21:42:49 -0400
Subject: ANNOUNCE: KirbyBase 1.8.2
Message-ID: <42782899.3000803@twmi.rr.com>

This is an *Emergency* bug-fix release.  Fred Pacquier alertly pointed 
out a bug I introduced in the last version.  It occurs when you select 
all records in a table; newline characters were not getting stripped off 
the end of every returned record.  The bug has been fixed in this version.

Thanks Fred!


KirbyBase is a simple, plain-text, database management system written in 
Python.  It can be used either embedded in a python script or in a 
client/server, multi-user mode.  You use python code to express your 
queries instead of having to use another language such as SQL.  
KirbyBase is disk-based, not memory-based.  Database changes are 
immediately written to disk.

You can find more information on KirbyBase at:
http://www.netpromi.com/kirbybase.html

You can download KirbyBase for Python at:
http://www.netpromi.com/files/KirbyBase_Python_1.8.2.zip


Jamey Cribbs
jcribbs at twmi.rr.com




From http  Sat May 21 21:57:58 2005
From: http (Paul Rubin)
Date: 21 May 2005 18:57:58 -0700
Subject: first release of PyPy
References: <mailman.304.1116724468.8733.python-list@python.org>
Message-ID: <7x64xc10pl.fsf@ruckus.brouhaha.com>

Jp Calderone <exarkun at divmod.com> writes:
>   Have you profiler data in support of this?  Suggesting
>optimizations, especially ones which require semantic changes to
>existing behavior, without actually knowing that they'll speed things
>up, or even that they are targetted at bottleneck code, is kind of a
>waste of time.

I don't have measurements for Python (no idea whether PyPy supports
profiling, and CPython interpreters aren't very interesting since
the effect matters mostly for compiled code), but Flavors faced
a very similar problem and caching was a big win.  I'm sure all
serious CLOS implementations do something similar.


From keir.robinson at gmail.com  Wed May 18 12:05:25 2005
From: keir.robinson at gmail.com (keirr)
Date: 18 May 2005 09:05:25 -0700
Subject: Is Python suitable for a huge, enterprise size app?
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>
Message-ID: <1116432325.497438.64580@g49g2000cwa.googlegroups.com>

> So, given the very general requirements in the first paragraph, do
you
> think that Python could handle it?  If anyone has direct experience
> developing large apps in Python, I would appreciate your insight.


I wouldn't, especially[1] if your thousands of business objects get
allocated/deallocated as the system runs.  Currently python's memory
usage can grow rapidly (from the perspective of the o/s) when large
numbers of objects are repeatedly created and freed.

On the other hand, you could use a combination of python and C++
(perhaps using boost's python wrapping code).  The ability to create
C/C++ modules is a "get out of jail free card" - if you did manage to
convince your company to go with python, and it fell short in some
area, a custom C module could be a handy trick.

Perhaps you could compare your project to existing large python
projects; like Zope maybe?

[1] if the objects in the system are static, rather than dynamic, of
course this is not an issue.  My "I wouldn't" comes from the fact that
your requirements include "lots of object" as a feature, and no word on
how they will be used. 

Good luck anyway :-)
 Keir.



From __peter__ at web.de  Fri May 20 07:42:06 2005
From: __peter__ at web.de (Peter Otten)
Date: Fri, 20 May 2005 13:42:06 +0200
Subject: Cascading menus with Tk
References: <uaGdnWyAsaM1KhDfRVn-sw@comcast.com>
Message-ID: <d6kicj$gbo$01$1@news.t-online.com>

michelle wrote:

> What I am trying to do is add cascading menus to a Tk menu widget like:
> 
> File
> New...
> ---> Router
> ---> Firewall
> Open
> ----
> Exit

Just add the submenu with the "Router" and "Firewall" entries to the
filemenu in the same way you added the submenu with the "New", "Open", and
"Exit" entries to the menu bar:

> mainWindow = Tk()
> mainWindow.title("myApp")
> 
> # create a menu
> menubar = Menu(mainWindow)
> mainWindow.config(menu=menubar)
> 
> filemenu = Menu(menubar)
> menubar.add_cascade(label="File", menu=filemenu)

new_menu = Menu(filemenu)
new_menu.add_command(label="Router")
new_menu.add_command(label="Firewall")
filemenu.add_cascade(label="New...", menu=new_menu)

> filemenu.add_command(label="Open...", command = openFileDialog)
> filemenu.add_separator()
> filemenu.add_command(label="Exit", command = mainWindow.destroy)

Peter



From tjreedy at udel.edu  Sun May 15 14:58:58 2005
From: tjreedy at udel.edu (Terry Reedy)
Date: Sun, 15 May 2005 14:58:58 -0400
Subject: string.lstrip stripping too much?
References: <000401c55951$6a4b25e0$0505a8c0@cheopsturbo>
Message-ID: <d6864v$frd$1@sea.gmane.org>

> why does lstrip strip the D of Daniel Lanois also?

Because it does just what the Lib Ref doc on str.lstrip says that it does.
>>>help(str.lstrip) # should also explain

Terry J. Reedy





From jmdeschamps at cvm.qc.ca  Mon May 16 12:35:31 2005
From: jmdeschamps at cvm.qc.ca (jean-marc)
Date: 16 May 2005 09:35:31 -0700
Subject: Importing and namespace visibility
In-Reply-To: <4288be05$0$22928$636a15ce@news.free.fr>
References: <1116198993.514542.96350@g44g2000cwa.googlegroups.com>
	<4288be05$0$22928$636a15ce@news.free.fr>
Message-ID: <1116261331.774173.62570@g14g2000cwa.googlegroups.com>

Merci Bruno, ( and also to Fredrik )

So I think I understand correctly, if I say that:
each modulkes requires its own set of reference to whatever objects it
needs to speak. The interpreter wil see not to create extra copies of
the compiled code if many modules import the same modules but will make
them all point to the one already existing (in this program's
execution).

Practically, it means every module import whatever it needs - be
careful with recursive imports - keep things tidy by using the 'import
suchModule' (and use dotted name chains to reach whatever is needed).

Again thank you,

JM
PS Nice weather in Bordeaux ? I've been there once... (when I was young
(sigh))



From jerf at jerf.org  Wed May  4 16:59:00 2005
From: jerf at jerf.org (Jeremy Bowers)
Date: Wed, 04 May 2005 16:59:00 -0400
Subject: empty lists vs empty generators
References: <509534af.0505021514.5e49aa2@posting.google.com>
	<pan.2005.05.03.01.32.03.187701@jerf.org>
	<wl4ee.2865$Cz3.445354@monger.newsread.com>
	<pan.2005.05.04.18.29.22.758200@jerf.org>
	<vkaee.3459$5I5.389496@newshog.newsread.com>
Message-ID: <pan.2005.05.04.20.59.00.605319@jerf.org>

On Wed, 04 May 2005 20:33:31 +0000, Leif K-Brooks wrote:
> With the EmptyGeneratorDetector class as you defined it, lists will fail:
> 
>  >>> EmptyGeneratorDetector([])
> Traceback (most recent call last):
>    File "<stdin>", line 1, in ?
>    File "<stdin>", line 15, in __init__
> AttributeError: 'list' object has no attribute 'next'
> 
> Of course, the class is labeled as an empty generator detector, not an
> empty iterable detector, so it's doing what it says it will, but a little
> bit of extra generalism can't hurt.

OK, thanks, now I see what you mean. I was worried that you might be
referring to an iterator type that returned something other than itself
when you called iter on it, which I thought wasn't legal.


From jasondrew72 at gmail.com  Mon May 16 16:13:26 2005
From: jasondrew72 at gmail.com (Jason Drew)
Date: 16 May 2005 13:13:26 -0700
Subject: CGI on Windows
In-Reply-To: <mailman.53.1116266878.8733.python-list@python.org>
References: <mailman.53.1116266878.8733.python-list@python.org>
Message-ID: <1116274406.666427.7680@g49g2000cwa.googlegroups.com>

I believe you're experiencing a bug that I also encountered, and for
which there is a patch. See:
http://sourceforge.net/tracker/?group_id=5470&atid=105470&func=detail&aid=1110478

Fixing os.py as described in the patch fixed all my CGI-related
problems. Hope it does for you too!

Jason



From harlinseritt at yahoo.com  Sun May  1 02:52:07 2005
From: harlinseritt at yahoo.com (Harlin Seritt)
Date: 30 Apr 2005 23:52:07 -0700
Subject: Running script in background.
Message-ID: <1114930327.902938.204630@z14g2000cwz.googlegroups.com>

Hi,

I have a script.py that is converted to .exe using py2exe. From another
script I call script.exe and would like to be able to run this
script.exe in the background (as well as in console -- giving the user
some simple options). How can I make this happen?

thanks,

Harlin



From dalke at dalkescientific.com  Wed May 18 16:56:28 2005
From: dalke at dalkescientific.com (Andrew Dalke)
Date: Wed, 18 May 2005 20:56:28 GMT
Subject: Is Python suitable for a huge, enterprise size app?
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>
	<jmbsl2-opn.ln1@lairds.us>
	<1116442276.918194.194110@g44g2000cwa.googlegroups.com>
	<mailman.163.1116443300.8733.python-list@python.org>
Message-ID: <pan.2005.05.18.20.56.27.152785@dalkescientific.com>

Ivan Van Laningham wrote:
>  ...   Oh, it's interpreted, is it?  Interesting."  You can
> see Python going down the sewer pipes, right on their faces.

Nahh, the right answer is "It's byte-compiled, just like Java."

				Andrew
				dalke at dalkescientific.com



From bokr at oz.net  Thu May 12 17:14:08 2005
From: bokr at oz.net (Bengt Richter)
Date: Thu, 12 May 2005 21:14:08 GMT
Subject: Interactive shell for demonstration purposes
References: <1115814028.259365.98710@g49g2000cwa.googlegroups.com>	<mailman.347.1115815769.29826.python-list@python.org>	<du78y2l5137.fsf@lehtori.cc.tut.fi>	<mailman.359.1115821284.29826.python-list@python.org>
	<4282ff44.1317299666@news.oz.net>
	<mailman.473.1115912493.29826.python-list@python.org>
Message-ID: <4283c297.3100958@news.oz.net>

On Thu, 12 May 2005 17:41:29 +0200, Brian Quinlan <brian at sweetapp.com> wrote:

>Bengt Richter wrote:
>> If you make your console 96 wide and set the font to Lucida Console Bold 24point,
>> it will probably expand to near full screen on 1024x768. You can set the scroll buffer
>> to a couple hundred lines and adjust console widow height to suit. Use the properties
>> from the system icon, or get there by Alt-Space P etc.
>
>That's not bad. There are two caveats:
>1. you have to set the width to 72 characters (instead of 80) at
>    1024x768 with 24 point fonts
Well, you don't _have_ to ;-) E.g., I have my screen buffer size set to 96 wide and 200 high,
so when I select 24-pt bold Lucida Console, I don't see more than about 68 characters within
the frame, but I can scroll horizontally to see to the 96 limit. If I output more than 96 wide,
it wraps to the next line. You may want to set wrap/buffer width at 72, but that's a choice, not
a have-to, at least on my system ;-)

>2. you can't run in full-screen mode
Well, my system permits it, sort of, but it does force some layout and ugly raster font that reminds
of a black BSOD and is probably controlled by some registry stuff that I am too lazy to pursue.
I had to kill it (the console window) to get back to a normal console window, but that is probably
because I don't know the secret incantation off hand ;-/

Anyway, HIIH (happy if it helped ;-)

Regards,
Bengt Richter


From curi at curi.us  Sun May 29 15:05:43 2005
From: curi at curi.us (Elliot Temple)
Date: Sun, 29 May 2005 12:05:43 -0700
Subject: Case Sensitive, Multiline Comments
In-Reply-To: <hp1k915odus7rohmiqeigt2nru0r5au4mm@4ax.com>
References: <1117137316.140791.210430@g14g2000cwa.googlegroups.com>
	<8664x5y92g.fsf@guru.mired.org> <429654DA.9050903@lexicon.net>
	<1117154013.092736.298310@g14g2000cwa.googlegroups.com>
	<hp1k915odus7rohmiqeigt2nru0r5au4mm@4ax.com>
Message-ID: <C46CC58D-E4A9-4665-978C-3F2DB1F03C1B@curi.us>


On May 29, 2005, at 11:44 AM, Arthur wrote:

> On 26 May 2005 17:33:33 -0700, "Elliot Temple" <curi42 at gmail.com>
> wrote:
>
>
>> Thanks for the link on case sensitivity.  I'm curious about the  
>> person
>> who found case sensitivity useful though: what is it useful for?
>>
>
> I am curious about why you find case sensitivity annoying.  But just
> mildly curious.

I'm glad you asked ;-)

Case insensitivity gives you more choice about how to type keywords  
that you have no control over.  if or If.  for or For.  i don't think  
being inconsistent within a single program is a good idea, but having  
your choice of which to do is nice.  I personally think all lowercase  
is good, but some languages have capitalised keywords, so apparently  
other people prefer that.

I don't think the "case sensitivity hurts beginners" argument is  
persuasive.  Anyone who seriously wants to program can look up the  
correct capitalisation of everything.  *If* having to look up or keep  
track of capitalisation is annoying, *then* that argument applies to  
experienced programmers (who are devoting memory to the issue) just  
as much as beginners.

-- Elliot Temple
http://www.curi.us/


---
[This E-mail scanned for viruses by Declude Virus]



From phil at solidstatescientific.com  Mon May 16 16:53:22 2005
From: phil at solidstatescientific.com (Phil Dumont)
Date: Mon, 16 May 2005 16:53:22 -0400 (EDT)
Subject: deleting, but not getting, slices
Message-ID: <57058.146.153.144.33.1116276802.squirrel@www.solidstatescientific.com>

>>> import sys
>>> sys.version
'2.3.4 (#1, Feb  4 2005, 12:19:08) \n[GCC 3.2.3 20030502 (Red Hat Linux
3.2.3-42)]'


I'm implementing a type that supports a subset of the sequence
abstraction in which I want to allow the deletion of elements/slices,
but don't need/want to allow the fetching of a slice.  So I filled
in the tp_as_sequence slot, filled in the sq_ass_slice slot, and
did not fill in sq_slice.

I was surprised to find that this did not work.

On further investigation, I found out that it was because in
assign_slice(), the call to PySequence_(Del|Set)Slice is inside
this test:

  if (sq && sq->sq_slice && ISINT(v) && ISINT(w)) {
    ...

It baffles me why the test if for sq_slice, not sq_ass_slice,
when neither of PySequence_(Del|Set)Slice reference sq_slice,
but both reference sq_ass_slice.

My attempts to find an explanation in the docs/faqs/code have
been thusfar fruitless.

I'm able to work around it by defining a sq_slice that does
nothing but unconditionally raise an exception.  But the check
for sq_slice in assign_slice() makes me wonder if this is the
right thing to do.  (Seems ok so far.)

Any hints would be appreciated

phil




From martin.witte at gmail.com  Wed May  4 09:43:44 2005
From: martin.witte at gmail.com (wittempj@hotmail.com)
Date: 4 May 2005 06:43:44 -0700
Subject: Better way to do parsing?
In-Reply-To: <mailman.146.1115201659.6583.python-list@python.org>
References: <mailman.146.1115201659.6583.python-list@python.org>
Message-ID: <1115214224.764218.270700@f14g2000cwb.googlegroups.com>

Isn't it a better idea to manipulate the import statement with use of
of the 'imp' module to get a restriction on the import statement?



From jhe13586 at bigpond.net.au  Sun May 15 07:33:52 2005
From: jhe13586 at bigpond.net.au (Joal Heagney)
Date: Sun, 15 May 2005 11:33:52 GMT
Subject: Mandrake 10.1 and Python 2.3.4
Message-ID: <AsGhe.3663$E7.3600@news-server.bigpond.net.au>

Hi everyone. I've been getting this error message in python, and it's 
really driving me up the wall.


[joal at localhost joal]$ python
'import site' failed; use -v for traceback
Python 2.3.4 (#1, Apr 18 2005, 19:03:06)
[GCC 3.4.1] on linux2
Type "help", "copyright", "credits" or "license" for more information.
 >>>

Here's the relevant line when i run python in verbose mode:


'import site' failed; traceback:
Traceback (most recent call last):
   File "/usr/lib/python2.3/site.py", line 169, in ?
     sys.lib,
AttributeError: 'module' object has no attribute 'lib'

Is this a Mandrake or a Python mistake?
And does anyone know how to fix it?

I think this is the reason why I'm getting errors when it comes to 
importing other python packages.

Joal


From karlmax at tiscalinet.it  Sun May 29 13:23:07 2005
From: karlmax at tiscalinet.it (Karl Max)
Date: Sun, 29 May 2005 19:23:07 +0200
Subject: 2D vector graphics Problem
References: <4299c4de$0$17099$5fc30a8@news.tiscali.it>
	<4299eb5d$1@nntp0.pdx.net>
Message-ID: <4299fa7e$0$17106$5fc30a8@news.tiscali.it>


"Scott David Daniels" <Scott.Daniels at Acm.Org> ha scritto nel messaggio 
news:4299eb5d$1 at nntp0.pdx.net...
>>  x = x * cos - y * sin - xRel * cos + yRel * sin + xRel
>>  y = x * sin + y * cos - xRel * sin - yRel * cos + yRel
>>  self.coords = (x,y)
>
> Your equation for y uses the new x, not the old x.

De hi hi ho. I must sleep some more hours at night... ;-)
>Be more free with names.

Well, I often report book formulas, and forget renaming variables to more 
comprehensive language. Thank you for your help.

Max 




From me at privacy.net  Tue May 31 23:18:17 2005
From: me at privacy.net (Dan Sommers)
Date: 31 May 2005 23:18:17 -0400
Subject: Incrementing letters
References: <d779np$2dd$1@ork-un.noris.net>
	<m2is144t6z.fsf@unique.fully.qualified.domain.name.yeah.right>
Message-ID: <m28y1u4veu.fsf@unique.fully.qualified.domain.name.yeah.right>

On 27 May 2005 10:52:36 -0400,
Dan Sommers <me at privacy.net> wrote:

> And use string.ascii_letters[ 1 : ] + string.ascii_letters[ 0 ] for the
> second parameter to string.maketrans.

Oops.  Thank you Duncan and Rocco for correcting my mistake.

Regards,
Dan

-- 
Dan Sommers
<http://www.tombstonezero.net/dan/>


From onurb at xiludom.gro  Fri May 27 10:36:45 2005
From: onurb at xiludom.gro (bruno modulix)
Date: Fri, 27 May 2005 16:36:45 +0200
Subject: Strings for a newbie
In-Reply-To: <d773i4$g2p$1@nwrdmz03.dmz.ncs.ea.ibs-infra.bt.com>
References: <d7726f$fdg$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
	<42970d69@news.eftel.com>
	<d773i4$g2p$1@nwrdmz03.dmz.ncs.ea.ibs-infra.bt.com>
Message-ID: <4297307e$0$6667$636a15ce@news.free.fr>

Malcolm Wooden wrote:
(top post corrected)
> 
> "John Machin" <sjmachin at lexicon.net> wrote in message 
> news:42970d69 at news.eftel.com...
> 
>>Malcolm Wooden wrote:
>>
(snip useless rant)
>>>
>>>I want to put a sentence of words into an array, eg "This is a sentence 
>>>of words"
>>>
>>>In RB it would be simple:
>>>
(snip 'simple' example)
>>>
(snip other useless rant)
>>
>>>>>s = "This is a sentence of words"
>>>>>a = s.split()
>>>>>a
>>
>>['This', 'is', 'a', 'sentence', 'of', 'words']
>>
> Sorry John but that don't do it for me. Just get errors comming back

http://www.catb.org/~esr/faqs/smart-questions.html

Strange enough, I used variations of the above code - which is a pretty
common Python idiom - in tens and tens of working applications...

-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From fredrik at pythonware.com  Wed May 25 12:14:08 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Wed, 25 May 2005 18:14:08 +0200
Subject: Unusable outer edge of Tkinter canvases?
References: <dave.opstad-71E7F6.08424525052005@news.isp.giganews.com>
Message-ID: <d72853$pva$1@sea.gmane.org>

Dave Opstad wrote:

> When drawing rectangles in Tkinter canvases I've noticed the outer edges
> (say 3-5 pixels) don't always draw. For instance, try typing this in an
> interactive session (Terminal in OS X or Command Prompt in Windows XP):
>
> >>> import Tkinter as T
> >>> root = T.Tk()
> >>> f = T.Frame(root)
> >>> f.grid()
> >>> c = T.Canvas(f, width = 300, height = 300)
> >>> c.grid()
> >>> c.create_rectangle(1, 1, 299, 299)
> >>> c.create_rectangle(3, 3, 297, 297)
> >>> c.create_rectangle(5, 5, 295, 295)
>
> On the Mac, the first two rectangles only partly show up (two sides for
> the first one and three for the second), while the third one draws
> completely. On Windows the first rectangle appears partially and the
> final two appear completely.
>
> Is there some simple setting I'm missing? I've tried gridding the canvas
> with padx, pady and also ipadx, ipady values but nothing seems to help
> make the whole rectangle (1, 1, 299, 299) appear.

by default, the coordinate system is aligned with the widget's upper
left corner, which means that things you draw will be covered by the
inner border.

to fix this, you can either set the border width to zero, add scrollbars
to the widget (this fixes the coordinate system), or explicitly reset the
coordinate system:

    w.xview_moveto(0)
    w.yview_moveto(0)

</F>





From pdemb at gazeta.pl  Tue May 17 07:56:18 2005
From: pdemb at gazeta.pl (Peter Dembinski)
Date: Tue, 17 May 2005 13:56:18 +0200
Subject: question about the id()
References: <428809fc.62d7a08a.1cfe.ffffd7ef@mx.gmail.com>
	<mailman.23.1116212733.8733.python-list@python.org>
	<873bsnxhe0.fsf@hector.domek> <4288d546.86043504@news.oz.net>
	<87hdh3vxaa.fsf@hector.domek>
	<eobie.102028$IN.1728201@twister2.libero.it>
Message-ID: <87hdh29icd.fsf@hector.domek>

"Giovanni Bajo" <noway at sorry.com> writes:

> Peter Dembinski wrote:
>
>>> BTW, a typical performance optimization (not done automatically by
>>> python) is to hoist unchanging-value expressions out of loops, and
>>> obj.method is often such an expression, so you will this strategy
>>> when people try
>>> to squeeze extra performance from their programs.
>>
>> Good to know.  Is there any advanced optimizer for Python code,
>> which would do such things for me (or suggest them, like pychecker
>> does for readability)?
>
>
> Prove that a.f() would not change the meaning of "a.f" after its
> invokation is close to impossible.

Many things in Python programs cannot be proved.  But what about
suggesting optimisations, not doing them automatically?  

The similar case may be found in refactorization -- most things cannot
be proved, so the final decision is left to the programmer (and his
unit tests).

-- 
http://www.peter.dembinski.prv.pl


From http  Fri May 27 18:52:15 2005
From: http (Paul Rubin)
Date: 27 May 2005 15:52:15 -0700
Subject: write to the same file from multiple processes at the same time?
References: <mailman.175.1117200711.18027.python-list@python.org>
	<7x1x7siy3b.fsf@ruckus.brouhaha.com>
	<LdOdnf5kluybBwrfRVn-2Q@powergate.ca>
	<7xacmgnwvr.fsf@ruckus.brouhaha.com>
	<fcednbqcccHBPQrfRVn-2w@powergate.ca>
Message-ID: <7xwtpkqo2o.fsf@ruckus.brouhaha.com>

Peter Hansen <peter at engcorp.com> writes:
> I think the FAQ can answer that better than I can, since I'm not sure
> whether you're asking about any low-level (OS) locks it might use or
> higher-level (e.g. database-level locking) that it might use.  In
> summary, however, at the database level it provides only
> coarse-grained locking on the entire database.  It *is* supposed to be
> a relatively simple/lightweight solution compared to typical RDBMSes...

Compared to what the OP was asking for, which was a way to synchronize
appending to a serial log file, SQlite is very complex.  It's also
much more complex than (say) the dbm module, which is what Python apps
normally use as a lightweight db.

> (There's also an excrutiating level of detail about this whole area in
> the page at http://www.sqlite.org/lockingv3.html ).

Oh ok, it says it uses some special locking system calls on Windows.
Since those calls aren't in the Python stdlib, it must be using C
extensions, which again means complexity.  But it looks like the
built-in msvcrt module has ways to lock parts of files in Windows.

Really, I think the Python library is somewhat lacking in not
providing a simple, unified interface for doing stuff like this.


From tdickenson at devmail.geminidataloggers.co.uk  Tue May 17 05:32:26 2005
From: tdickenson at devmail.geminidataloggers.co.uk (Toby Dickenson)
Date: Tue, 17 May 2005 10:32:26 +0100
Subject: Windows distribution suggestions?
In-Reply-To: <4289ACD8.2070207@open-networks.net>
References: <7x3bsmfjdg.fsf_-_@ruckus.brouhaha.com>
	<7xekc6p9tp.fsf@ruckus.brouhaha.com>
	<4289ACD8.2070207@open-networks.net>
Message-ID: <200505171032.26688.tdickenson@devmail.geminidataloggers.co.uk>

On Tuesday 17 May 2005 09:35, Timothy Smith wrote:
> mate dont bugger around with all that. py2exe will make you a windows 
> native exe to run. and for updates you just need to update it's 
> library.zip.

py2exe is working great for me too. 

>> My app contains three different programs (say alice.py, bob.py, and
>> carol.py) that need to be independently launchable, and a dozen or
>> so other .py files that get imported into those first three

One tip: make sure your three top-level scripts are as empty as possible: just 
import some other module and call a function. All your active code is then in 
some library.zip shared between the three, and you need never change 
alice.exe, bob.exe, and carol.exe

> use NSIS for the installer, it can do anything you want an  
> it's free. it couldn't be more simple, shoot me an email if you
> need more 

Ive not used NSIS, but I have had good results from the free WiX tools, at 
http://sourceforge.net/projects/wix/. Documentation is poor, but examples are 
plenty.

-- 
Toby Dickenson


From efoda5446 at yahoo.com  Thu May 19 21:36:09 2005
From: efoda5446 at yahoo.com (Lorn)
Date: 19 May 2005 18:36:09 -0700
Subject: Extracting multiple zip files in a directory
In-Reply-To: <tvvn8155hra53hjd1khc5i4skhh7p9tkvm@4ax.com>
References: <1116462658.723097.134390@g43g2000cwa.googlegroups.com>
	<5vtn81h8qt9mk73etq0r3e02uqsdjf5jo1@4ax.com>
	<1116470952.173588.200990@o13g2000cwo.googlegroups.com>
	<tvvn8155hra53hjd1khc5i4skhh7p9tkvm@4ax.com>
Message-ID: <1116552969.032390.309200@f14g2000cwb.googlegroups.com>

Ok, I probably should have seen this coming. Working with small zip
files is no problem with the above script. However, when opening a 120+
MB compressed file that uncompresses to over 1GB, I unfortunately get
memory errors. Is this because python is holding the extracted file in
memory, as opposed to spooling it to disk, before writing? Does anyone
know any way around this... as of now, I'm out of ideas :( ??



From Moiz.Golawala at ge.com  Wed May 18 09:18:29 2005
From: Moiz.Golawala at ge.com (Golawala, Moiz M (GE Infrastructure))
Date: Wed, 18 May 2005 09:18:29 -0400
Subject: Problem getting results from SQLServer Database (adodbapi)
Message-ID: <CE90A4CF2E5E9C4890AE5D9D8A5EFAE30B780226@CINMLVEM10.e2k.ad.ge.com>

Hi All, 

Could someone please help me with an issue I am having. I am having problem returning values from a Stored Procedure that creates a dynamic table (table variable) inserts values during a procedure and then I select from that dynamic table to furnish values to python.

This does not work
MY PYTHON CODE IS:

import adodbapi
connStrSQLServer = r"Provider=SQLOLEDB.1; User ID=sa; Password=tester; Initial Catalog=someDB;Data Source=someSource" 
db = adodbapi.connect(connStrSQLServer)    
cursor = db.cursor()
 
sql = """test_procedure """

cursor.execute(sql)
results = cursor.fetchall()

MY TRANSACT SQL CODE IS:

ALTER  PROCEDURE dbo.test_procedure

AS
	DECLARE @dynamicTable TABLE  (col1 int)
	INSERT INTO @dynamicTable
		VALUES (123)
	SELECT * FROM @dynamicTable

THIS IS THE ERROR I GET

   results = cursor.fetchall()
  File "C:\Python23\Lib\site-packages\adodbapi\adodbapi.py", line 692, in fetch
ll
    return self._fetch()
  File "C:\Python23\Lib\site-packages\adodbapi\adodbapi.py", line 623, in _fetc

    self._raiseCursorError(Error,None)
  File "C:\Python23\Lib\site-packages\adodbapi\adodbapi.py", line 407, in _rais
CursorError
    eh(self.conn,self,errorclass,errorvalue)
  File "C:\Python23\Lib\site-packages\adodbapi\adodbapi.py", line 38, in standa
dErrorHandler
    raise errorclass(errorvalue)
Error: None
[]

This works
The python code is the same
The SQL Code is:

ALTER  PROCEDURE dbo.test_procedure

AS
	INSERT INTO somePhysicalTable		
		VALUES (123)
	SELECT * FROM somePhysicalTable


Notice that the only difference between the 2 procedures is that in one case I am using a dynamic (table variable) table and in the other I am using an actual physical table. Does anyone have a clue why one works and the other does not.

Any help appreciated! Thanks in advance

Moiz Golawala
GE Infrastructure, Security
Software Engineer
Enterprise Solutions

T 561 912 5972
F 561 994 6572
E moiz.golawala at ge.com 
www.gesecurity.com

791 Park of Commerce Blvd., Suite 100
Boca Raton, FL, 33487, U.S.A.
GE Security, Inc.



From ed_zeng at yahoo.com  Mon May  9 14:40:18 2005
From: ed_zeng at yahoo.com (Laguna)
Date: 9 May 2005 11:40:18 -0700
Subject: py2exe to share binary files
Message-ID: <1115664018.427353.298870@o13g2000cwo.googlegroups.com>

Hi,

With py2exe-0.3.3 for Python 2.2 in Windows XP, how to configure
setup.py such that multiple executables can share the dll files (like
wx*.dll etc.) as follows:

# Source folders
\Program1
   Program1.py
   Program1WX.py

\Program2
   Program2.py
   Program2WX.py


# Output binary folders
\SharedBinary
   _sre.dll
   bsddb.pyd
   python22.dll
   utilsc.pyd
   wxc.pyd
   wxmsw232.dll

\Executable1
   Program1.exe

\Executable2
   Program2.exe


Thanks for any help,
Laguna



From qwweeeit at yahoo.it  Sun May  8 08:41:01 2005
From: qwweeeit at yahoo.it (qwweeeit at yahoo.it)
Date: 8 May 2005 05:41:01 -0700
Subject: Controlling kwrite by dcop
Message-ID: <1115556061.120200.268900@z14g2000cwz.googlegroups.com>

Hi all,
in my cross-reference tool I have the need to highlight the variables
(by printing them in bold).
I am using the kwrite editor, and I am not able to control it from
python.
I was thinking of various solutions:
- consider the text file as html and use <b>...</b>
- use LaTex
- define a "new" language for kwrite with reserved words made up of the
cross-referenced variables (and so printed in bold).
etc..
Googling around I found:
http://phil.freehackers.org/kde/kde-techno/kde-techno-2.html

Python code to make a DCOP call
-------------------------------
#!/usr/bin/env python

from dcop import *

app = DCOPApplication("kwrite")
app.KWriteIface.insertText("This text was inserted from a python
shell!!!", 0)

app = DCOPApplication("konqueror")
app.KonquerorIface.createNewWindow("http://developer.kde.org")


As you can see you can interact with kwrite from dcop.
Unfortunately I don't have this module in my Python (2.3) nor I have
been able to find it.
Can you help me? Or have you a better solution for printing selected
parts of a text file in bold, without possibly changing the editor?



From gry at ll.mit.edu  Fri May 27 15:21:36 2005
From: gry at ll.mit.edu (gry at ll.mit.edu)
Date: 27 May 2005 12:21:36 -0700
Subject: regexp for sequence of quoted strings
In-Reply-To: <1117058353.702619.179010@z14g2000cwz.googlegroups.com>
References: <1117050058.836444.189460@o13g2000cwo.googlegroups.com>
	<yfs64x7xby7.fsf@black4.ex.ac.uk>
	<1117058353.702619.179010@z14g2000cwz.googlegroups.com>
Message-ID: <1117221696.053591.152710@g44g2000cwa.googlegroups.com>

PyParsing rocks!  Here's what I ended up with:

def unpack_sql_array(s):
    import pyparsing as pp
    withquotes = pp.dblQuotedString.setParseAction(pp.removeQuotes)
    withoutquotes = pp.CharsNotIn('",')
    parser = pp.StringStart() + \
             pp.Word('{').suppress() + \
             pp.delimitedList(withquotes ^ withoutquotes) + \
             pp.Word('}').suppress() + \
             pp.StringEnd()
    return parser.parseString(s).asList()

unpack_sql_array('{the,dog\'s,"foo,"}')
['the', "dog's", 'foo,']

[[Yes, this input is not what I stated originally.  Someday, when I
reach a higher plane of existance, I will post a *complete* and
*correct* query to usenet...]]

Does the above seem fragile or questionable in any way?
Thanks all for your comments!

-- George



From rkern at ucsd.edu  Fri May 13 14:35:45 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Fri, 13 May 2005 11:35:45 -0700
Subject: create words of various lengths
In-Reply-To: <1116007968.472411.300000@g44g2000cwa.googlegroups.com>
References: <1116002403.374232.210220@g49g2000cwa.googlegroups.com>	<1116005453.047943.153790@g14g2000cwa.googlegroups.com>	<mailman.46.1116007136.29328.python-list@python.org>
	<1116007968.472411.300000@g44g2000cwa.googlegroups.com>
Message-ID: <d62rj4$h9c$1@sea.gmane.org>

superprad at gmail.com wrote:
> :) the reason for me not upgrading my python is I am waiting for
> version of Numeric to be released for python 2.4 .The stable version of
> Numeric is only release for windows and not Linux I guess the last time
> i checked. which i use a lot .

Install from source. It works just fine. Numeric will never be released 
"just for Windows."

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From jstroud at mbi.ucla.edu  Fri May  6 19:44:13 2005
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Fri, 6 May 2005 16:44:13 -0700
Subject: Reference to self not passed to member function
In-Reply-To: <427bf61e$1@nntp0.pdx.net>
References: <mailman.113.1115418785.29826.python-list@python.org>
	<427bf61e$1@nntp0.pdx.net>
Message-ID: <200505061644.13947.jstroud@mbi.ucla.edu>

Thanks to both Scott and Fredrik.

James

On Friday 06 May 2005 04:22 pm, Scott David Daniels wrote:
> James Stroud wrote:
> > Hello All,
> >
> > I did this:
> >
> > py> class bob(object):
> > ...   def __init__(self,**kwargs):
> > ...     for fname,func in kwargs.items():
> > ...       setattr(self, fname, lambda *args : func(*args))
> > ...
> > py> def doit():
> > ...   print "wuzzup?"
> > ...
> > py> abob = bob(doit=doit)
> > py>
> > py> abob.doit()
> > wuzzup?
> >
> > Much to my surprise, this works fine.
> >
>  > 1. What exactly is going on?
>
> This behavior shouldn't surprise you.  You stored a function as
> an attribute.  In fact you could have simply done:
> py> class bob(object):
> ...   def __init__(self,**kwargs):
> ...       for fname, function in kwargs.items():
> ...           setattr(self, fname, function)
>
> > 2. How can I get ref to self passed to doit() if I want it to? This:
> >         abob.doit(abob)
>
> py> import new
> py> class carol(object):
> ...    def __init__(self, **kwargs):
> ...        for name, method in kwargs.items():
> ...            setattr(self, name,
> ...                    new.instancemethod(method, self, carol))
>
> This should behave as you prefer.
>
>
> --Scott David Daniels
> Scott.Daniels at Acm.Org

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From aisaac0 at verizon.net  Fri May 27 17:07:56 2005
From: aisaac0 at verizon.net (David Isaac)
Date: Fri, 27 May 2005 21:07:56 GMT
Subject: evaluated function defaults: stored where?
References: <gsble.1244$m%3.385@trnddc02>
Message-ID: <M_Lle.4960$m%3.1072@trnddc02>

Alan Isaac wrote:
> Default parameter values are evaluated once when the function definition
is
> executed. Where are they stored? ... Where is this documented?

Forgive any poor phrasing: I'm not a computer science type.
At http://www.network-theory.co.uk/docs/pytut/tut_26.html we read:
"The execution of a function introduces a new symbol table
used for the local variables of the function. More precisely,
all variable assignments in a function store the value in the local
symbol table; whereas variable references first look in the local
symbol table, then in the global symbol table, and then in the table of
built-in names."

But the default values of function parameters seem rather like a static
attributes of a class.
Is that a good way to think of them?
If so, are they somehow accessible?
How? Under what name?

Thanks,
Alan Isaac




From sjmachin at lexicon.net  Thu May 26 18:22:32 2005
From: sjmachin at lexicon.net (John Machin)
Date: Fri, 27 May 2005 08:22:32 +1000
Subject: Strange Execution Times
In-Reply-To: <3A252A14-E6A4-4F9B-AB49-B6B012A0BC12@curi.us>
References: <3A252A14-E6A4-4F9B-AB49-B6B012A0BC12@curi.us>
Message-ID: <42964C28.8070400@lexicon.net>

Elliot Temple wrote:
[copying Elliot's e-mail reply back to the list because it's educational 
  and scarcely private]

> 
> 
> 
> On 5/26/05, John Machin <sjmachin at lexicon.net> wrote:
>  > curi42 at gmail.com wrote:
>  >
>  > > I am running two functions in a row that do the same thing.
>  >
>  > 1. I see no functions here.
>  >
>  > You should set out a script like this:
>  >
>  > def main():
>  >      your_code_goes_here()
>  >
>  > if __name__ == '__main__':
>  >      main()
>  >
>  > for two reasons (a) your code will be referring to locals instead of
>  > globals; this is faster, which might appeal to you (b) if somebody
>  > accidentally imports the script, nothing happens.
> 
> Oops, I meant code blocks not functions.  Good advice, thanks.
> 
>  > 2. The two loops to which you refer do *not* do the same thing;  see 
> later.
> 
> <snip>
> 
>  > General questions: what platform? what version of Python? how  large is
>  > the file? how much free memory do you have? how many passwords are
>  > there? what is the average length of a password?
> 
> OS X 10.4.1    Python 2.3.5  (I wonder why they bundled an old  
> version..)  The file is 4 megs, about 8000 passwords.  I have 375  megs 
> of RAM free.  the passwords are mostly about 5-6 chars long.

Huh-uh -- evidently (from what you said later) a *GUESS* on the password 
size; measurement on the actual file that you were using would have 
given the answer "Oops, mean = 32, standard dev = 0".

> 
> 
>  > Ignoring the superficial-but-meaningless differences (i vs j, md5
>  > [aarrgghh!!] vs m), jo vs join), these two loops differ in the  
> following
>  > respects:
> 
> Sorry, I wrote a nicer version of the program with things named well,  
> but it was only getting the fast time, so I copied it into the old  
> version of the program and then I had to write join=jo etc to avoid  
> changing it.

Avoid changing what? And did you get the message that doing (in effect)

import md5
m = md5.new
md5 = m

is a horrifyingly dangerous disgusting and ugly stunt?

> 
>  >
>  > (1) 'data' is a copy of 'a'
>  > (2) the first loop's body is effectively: digest = RHS; LHS = digest
>  > whereas the 2nd loop's body is: LHS = RHS
>  > (3) the first loop uses starts[j]+1 whereas the second loop uses  
> starts[j]
> 
> oops, 3 is because the nicer version created a slightly different  index 
> list.  Hey, turns out that matters (see end)
> 
>  > Item (1) may affect the timing if file is large compared with  available
>  > memory -- could be 'a' has to be swapped out, and 'data' swapped in.
>  >
>  > Item (2) should make the 2nd loop very slightly faster, so we'll  ignore
>  > that :-)
> 
> yeah
> 
>  > Item (3) means you are not comparing like with like. It means that  the
>  > 1st loop has less work to do. So this could make an observable
>  > difference for very short passwords -- but still nothing like 0.14
>  > compared with 56.
>  >
>  > So, some more questions:
>  >
>  > The 56.56 is suspiciously precise -- you ran it a few times and it
>  > printed exactly 56.56 each time?
> 
> No, it got 55 or 56 something.
> 
>  >
>  > Did you try putting the 2nd loop first [refer to Item (1) above]?
> 
> Yes, that didn't change which was fast.
> 
>  > Did you try putting in a switch so that your script runs either  1st 
> loop
>  > or 2nd loop but not both?
> 
> No, good idea.     ....  OK tried it, and it didn't change how fast  
> each loop ran.  I also changed it so they both work on the same list  in 
> the version with a switch, and that didn't matter.
> 
>  > Note that each loop is making its target list
>  > expand in situ; this may after a while (like inside loop 2) cause the
>  > memory arena to become so fragmented that swapping will occur.  This of
>  > course can vary wildly depending on the platform; Win95 used to be  the
>  > most usual suspect but you're obviously not running on that.
> 
> Nod
> 
>  > Some observations:
>  >
>  > (1) 's' is already a string, so ''.join(s[x:y]) is a slow way of  doing
>  > s[x:y]
> 
> Oops!  That happened because it used to be ''.join(the_list[x:y]) but  
> then i realised i could just grab sections of the original string but  
> didn't fully change it.
> 
>  > (2) 'a' ends up as a list of one-byte strings, via a very circuitous
>  > process: a = array.array('c', s).tolist()
>  >
>  > A shorter route would be: a = list(s)
> 
> Oh cool.  I looked for a string-to-list function a little, but didn't  
> find that.  I thought I tried that exact one too, but I guess not.

Be aware of list comprehensions; when list(s) escaped your scan of the 
manuals, you could have done this: a = [x for x in s]

NOTE: a string is an iterable! (see later)

> 
>  > However what's wrong with what you presumably tried out first i.e.  a =
>  > array.array('c', s) ?? It doesn't need the final ''.join() before
>  > writing to disk, and it takes up less memory.
> 
> The problem was I couldn't put the new passwords in as a single  
> element.

Indeed. It's annoying enough that you can't write a[x:y] = 'foo' where a 
  is of type array.array('c') that it's reaching the level where I might 
get motivated to submit a patch :-)

>  I guess I could have turned them into arrays, though.
> 
>  > NOTE: the array variety
>  > takes up 1 byte per character. The list variety takes up at least 4
>  > bytes per character (on a machine where sizeof(PyObject *) == 4);  to 
> the
>  > extent that the file contains characters that are not interned  (i.e. 
> not
>  >    [A-Za-z_] AFAIK), much more memory is required as a separate  object
>  > will be created for each such character. Was it consistently slower?
> 
> The second loop is consistently slower in this exact version of the  
> program, even if put first or only one runs.
> 
>  > (3) If memory is your problem, you could rewrite the whole thing to
>  > simply do one write per password; that way you only need 1.x copy  of 
> the
>  >    file contents in memory, not 2.x.
> 
> I actually got my project finished (only 3 files, at a minute each).   
> Then I started to write a faster version of the program for fun.   When 
> it got about 400 times faster, that was a surprise!
> 
> BTW when it takes a minute it keeps a CPU at full use the whole  time.  
> (I have dual 2 ghz G5s).
> 
> ....
> 
> Hey, I just found the difference!  Somehow adding the +1's to the  
> second version makes it fast, and removing them makes it slow again.
> 
> slow:
> data[starts[i]:ends[i]] = md5(join(s[starts[i]:ends[i]])).hexdigest()
> 
> fast:
> data[starts[i]+1:ends[i]] = md5(join(s[starts[i]+1:ends [i]])).hexdigest()
> 
> OK I figured it out:  I accidentally copied an output file to use for  
> my test data.  So all the passwords were already MD5ed, and thus were  
> all exactly 32 chars long.  So setting a slice equal to something of  
> the same length seems to be very fast (even though I'm replacing  
> multiple list elements with a single string).

You are (in this case) replacing multiple list elements with the *same* 
number of elements; not a single string -- see below.

 >>> alist = list('fubar')
 >>> alist
['f', 'u', 'b', 'a', 'r']
 >>> alist[1:4] = 'izz'
 >>> alist
['f', 'i', 'z', 'z', 'r']
 >>> alist[1:4] = 42
Traceback (most recent call last):
   File "<stdin>", line 1, in ?
TypeError: can only assign an iterable
 >>> alist[1:4] = [42]
 >>> alist
['f', 42, 'r']
 >>>

It's very fast because you are not changing the size of the list. A 
Python list is not a linked list; it is implemented as a contiguous 
array of pointers to objects. Your file is about 4MB. Thus on a 32-bit 
machine  your list is taking up about 16MB. Reducing the size means 
copying part of the list. Increasing the size means allocating more 
memory and may mean copying all of the list.

> 
> Thanks again for your help.
> 

Well we ain't finished yet. Let's summarise where we are at:

Your "fast" loop 1 was fast because it was (correctly, given the 
atypical input data) replacing a 32-element slice by a 32-element slice. 
Your loop 2 was slow because it was buggy and replacing a 33-element 
slice by a 32-element slice.

However with *typical* input data and correct code you will be replacing 
a 5-or-6-element slice with a 32-element slice, slowly. So your 
fantastic speed-up was just a fantasy.

You should consider, for both fun and education, writing a version along 
the lines I suggested i.e. have only one (single string) copy of your 
input file in memory.

Then make the small change to use the mmap module and see what effect 
that has.

For extra points (and a useful increment to your education), try using 
the re module, after reading the section in the docs about how the 
'repl' argument to the 'sub' function/method can be a function.

Then post your summarised results back to the newsgroup for the benefit 
of all -- there's this vague hope that folk actually read other peoples' 
posts before firing off questions :-)

Cheers,
John


From sjmachin at lexicon.net  Mon May 23 16:09:32 2005
From: sjmachin at lexicon.net (John Machin)
Date: Tue, 24 May 2005 06:09:32 +1000
Subject: Memory errors with large zip files
References: <1116609022.526500.317990@g44g2000cwa.googlegroups.com>
	<1116637462.076589.287880@g47g2000cwa.googlegroups.com>
	<iost81dbd8ut8q0dn767inqj3esj3gghda@4ax.com>
	<1116865695.363808.104620@g47g2000cwa.googlegroups.com>
Message-ID: <a9d4915jtldgonq1aj1aqvonkfbcipfauk@4ax.com>

On 23 May 2005 09:28:15 -0700, "Marcus Lowland" <mcdesigns at walla.com>
wrote:

>Thank for the detailed reply John! I guess it turned out to be a bit
>tougher than I originally thought :-)....
>
>Reading over your links, I think I better not attempt rewriting the
>zipfile.py program... a little over my head :-). The best solution,
>from everything I read seems to be calling an unzipper program from a
>subprocess. I assume you mean using execfile()? I can't think of
>another way.

Errrmmmm ... no, execfile runs a Python source file. 

Check out the subprocess module:

"""
6.8 subprocess -- Subprocess management 

New in version 2.4. 

The subprocess module allows you to spawn new processes, connect to
their input/output/error pipes, and obtain their return codes. This
module intends to replace several other, older modules and functions,
such as: 

os.system
os.spawn*
os.popen*
popen2.*
commands.*
"""




From jstroud at mbi.ucla.edu  Sun May  8 18:28:39 2005
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Sun, 8 May 2005 15:28:39 -0700
Subject: How to implement multiple constructors
In-Reply-To: <1115588999.677872.174250@z14g2000cwz.googlegroups.com>
References: <1115588999.677872.174250@z14g2000cwz.googlegroups.com>
Message-ID: <200505081528.39468.jstroud@mbi.ucla.edu>

On Sunday 08 May 2005 03:05 pm, tron.thomas at verizon.net wrote:
> I am a C++ developer with only a little experience using Python.  I
> want to create a Python class where by I can construct an instance from
> that class based on one of two different object types.
>
> For example, if I were programming in C++, I would do the something
> like the following:
>
> class MyClass
> {
> public:
> 	MyClass(const SomeType& type);
> 	MyClass(const SomeOtherType& type);
> ...
> };
>
> In Python I cannot have two constructors that each take a single
> argument as Python does not distinguish the type of objects that are
> passed to functions.
>
> One thought I had was to use the isinstance method such as this:
>
> class MyClass:
> 	__init__(self, object):
> 		if isinstance(object, SomeType):
> 			#Initialize based on SomeType object
> 			...
>
> 		elif isinstance(object, SomeOtherType):
> 			#Initialize base on SomeOtherType object
> 			...
>
> 		else:
> 			#Raise some kind of exception
> 			...

> Some research I've done on the Internet indicates that the use of the
> isinstance method can be problematic, and I'm not sure if it is the
> best approach to solving my problem.
>
> What is the best way for me to implement this type of functionality in
> Python?

In case you haven't found it: <http://www.canonical.org/~kragen/isinstance/>

Can both of these classes (be modified to/subclassed to) support the same 
interface such that MyClass.__init__ will not care which is passed? I believe 
this would be the best solution (read: "my favorite solution"). If you know 
what type of object "object" is (BTW, a keyword in 2.3 and later, I believe), 
then one approach is to initialize with a blank MyClass instance and use 
"fill_with_SomeType()" and "fill_with_SomeOtherType()" methods.

I think the least elegant approach is to test for interface compatibility, 
e.g.:

   try:
     self.avalue = isinstance.get_avalue()
   except NameError:
     self.avalue = isinstance.get_anothervalue()

But this may get out of hand with many different possibilites.

James

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From peter at engcorp.com  Mon May 16 09:27:24 2005
From: peter at engcorp.com (Peter Hansen)
Date: Mon, 16 May 2005 09:27:24 -0400
Subject: command string good in subprocess.Popen(string) fails in
	process.Process(string)
In-Reply-To: <mailman.43.1116249416.8733.python-list@python.org>
References: <mailman.43.1116249416.8733.python-list@python.org>
Message-ID: <9YSdnavxIbdvAhXfRVn-1w@powergate.ca>

Earl Eiland wrote:
> The command string consists of "filename.exe  instruction1 instruction2
> ..."  It works in subprocess, but in process, returns the error "can't
> find the file instruction1".
> 
> How do I pass command line instructions in process.Process?  I tried a
> list ['filename.exe', 'instruction1 instruction2 ...'] with the same
> result.

Where are you getting this "process" module from?  It's not standard:

c:\>python
Python 2.4 (#60, Nov 30 2004, 11:49:19) [MSC v.1310 32 bit (Intel)] on win32
 >>> import process
Traceback (most recent call last):
   File "<stdin>", line 1, in ?
ImportError: No module named process


-Peter


From cowie.rob at gmail.com  Sat May 28 13:00:43 2005
From: cowie.rob at gmail.com (Rob Cowie)
Date: 28 May 2005 10:00:43 -0700
Subject: Help with choice of suitable Architecture
Message-ID: <1117299643.380598.5540@g47g2000cwa.googlegroups.com>

Hi,

This is my first post so go easy!

I have been asked (as part of an MSc project) to create a server based
planner for a research group at my uni. It will have a web interface to
interact with data stored in an XML document. Basic functionality is
required such as viewing, searching, editing, creating and deleting
entries for things such as paper submission deadlines, events, funding
application deadlines. I would also like to use AJAX principles in the
web interface.
Additionaly, it must email a BibTex file once a month to a
predetermined address.

I'm totally new to web programming. I have been looking into the best
way to proceed. CGI is of course an option but it seems slow, clunky
and outdated. Twisted provides a rich architecture but might be
overkill. Nevow seems to be very popular.
I suspect I could achieve what I want using PHP but I would really like
to get to grip with Python.

I'm not asking for a comparison of each architecture per se.... that
seems to be well covered in this group. I would like to know how you
all would set about creating this realtively simple application.

Cheers,
Rob Cowie
Coventry University, Britain



From benji at benjiyork.com  Mon May 30 16:26:18 2005
From: benji at benjiyork.com (Benji York)
Date: Mon, 30 May 2005 16:26:18 -0400
Subject: Case Sensitive, Multiline Comments
In-Reply-To: <d7fpbl$b1s$1@wake.carmen.se>
References: <1117137316.140791.210430@g14g2000cwa.googlegroups.com>	<z5adnQMsOLiL7AffRVn-hQ@comcast.com>	<mailman.256.1117477669.18027.python-list@python.org>
	<d7fpbl$b1s$1@wake.carmen.se>
Message-ID: <429B76EA.70700@benjiyork.com>

What I want to know is how Mangus wrote an entire message fully
justified.  I looked for extra spaces and other cheats but only
found a couple of superfluous exclamation marks.  Well done! He
must be a justification wizard.  I wish I could do that too. :)
--
Benji York


From a at b.c  Mon May  9 01:58:58 2005
From: a at b.c (D H)
Date: Mon, 09 May 2005 00:58:58 -0500
Subject: Fredrik Lundh
In-Reply-To: <mailman.188.1115614698.29826.python-list@python.org>
References: <mailman.139.1115189526.6583.python-list@python.org><maednQfrx_iwL-XfRVn-hA@powergate.ca>	<Av-dnbF5u_SOpOffRVn-vQ@comcast.com>	<mailman.66.1115324909.29826.python-list@python.org>	<k42dnWFaUMRQeePfRVn-pg@comcast.com>
	<mailman.188.1115614698.29826.python-list@python.org>
Message-ID: <h9qdneSvU71kZuPfRVn-rw@comcast.com>

Robert Kern wrote:
> It's called Daily Python-URL not Daily Python-Like-Languages-URL. *That* 
> explains it.

google for logix site:pythonware.com  He's announced plenty non-python 
stuff that is of interest to python users, including plenty of marketing 
for his own software.

 > It's not like Pythonware is hiding its relationship.

It hides any mention that Fredrik Lundh is behind it, which is deceitful 
when he posts any smidgeon of praise his software gets, not admitting he 
makes his income off support fees for that same software.

He can try to smear me all he wants if he really thinks that will help 
his business.


> Funny you should mention that article since I showed that Fredrik's 
> benchmarks were correctly done (if not diligently-reported) while Uche's 
> were wrong on both marks.
> 
> http://www.oreillynet.com/cs/user/view/cs_msg/51158

Funny how you link to your own post out of context.  You must have not 
listened to any of the other comments.

> Oy, my head hurts. Take it off-list, both of you. The rest of us don't 
> care about your bickering.

Yet again someone bitches about a thread right after they hypocritically 
throw their own little darts into the mix.


From gh at ghaering.de  Thu May 19 05:14:05 2005
From: gh at ghaering.de (Gerhard Haering)
Date: Thu, 19 May 2005 11:14:05 +0200
Subject: [pysqlite] pysqlite2.dbapi2.OperationalError: cannot commit
	transaction - SQL statements in progress
In-Reply-To: <d6g5p0$skp$1@news.hispeed.ch>
References: <d6g5p0$skp$1@news.hispeed.ch>
Message-ID: <20050519091405.GA21546@mylene.ghaering.de>

On Wed, May 18, 2005 at 09:41:39PM +0200, F. GEIGER wrote:
> I've troubles to let my app take off using pysqlite.
> 
> What I wonder most for now is that "pysqlite2.dbapi2.OperationalError:
> cannot commit transaction - SQL statements in progress" when I do this:
> 

Urgh! I would have preferred simplified demo code. But after a little
thinking, I guessed right.

> [...]

pysqlite 2 currently has problems doing .commit() .rollback() on the
connection object after a cur.execute("select ...") in a few cases.

I know why and I will fix it in 2.0.2 (originally only MacOS X fixes
planned) or if it takes longer to test, in 2.0.3.

Current workarounds:

- don't commit/rollback after SELECT. It doesn't make much sense anyway.
  .commit()/.rollback() after your DML statements instead
  (INSERT/UPDATE/DELETE).

- Use fetchall()[0] for fetching single rows instead of fetchone() for
  queries like your SELECT COUNT.

-- Gerhard
-- 
Gerhard H?ring - gh at ghaering.de - Python, web & database development
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From peter at engcorp.com  Mon May  2 19:51:52 2005
From: peter at engcorp.com (Peter Hansen)
Date: Mon, 02 May 2005 19:51:52 -0400
Subject: WordPress Python Library 1.0
In-Reply-To: <4276a972.508897235@news.oz.net>
References: <Rmwde.850131$b5.37722456@news3.tin.it>
	<mailman.49.1115067917.6583.python-list@python.org>
	<VKwde.1322130$35.49403624@news4.tin.it>
	<4276a972.508897235@news.oz.net>
Message-ID: <9Y2dnZqwJOthIevfRVn-sg@powergate.ca>

Bengt Richter wrote:
> On Mon, 02 May 2005 21:14:29 GMT, Michele Ferretti <black.bird at NOSPAMtiscali.it> wrote:
>>ok, sorry, but subject is very explicit!
> 
> Should we expect your "WordPress Python Library 1.0" to do to words
> what the dry cleaners do to suits and shirts then? ;-)

Lose buttons and stain the collars?


From sjmachin at lexicon.net  Sat May 21 05:51:27 2005
From: sjmachin at lexicon.net (John Machin)
Date: Sat, 21 May 2005 19:51:27 +1000
Subject: Memory errors with large zip files
References: <1116609022.526500.317990@g44g2000cwa.googlegroups.com>
	<1116637462.076589.287880@g47g2000cwa.googlegroups.com>
Message-ID: <iost81dbd8ut8q0dn767inqj3esj3gghda@4ax.com>

On 20 May 2005 18:04:22 -0700, "Lorn" <efoda5446 at yahoo.com> wrote:

>Ok, I'm not sure if this helps any, but in debugging it a bit I see the
>script stalls on:
>
>newFile.write (zf.read (zfilename))
>
>The memory error generated references line 357 of  the zipfile.py
>program at the point of decompression:
>
>elif zinfo.compress_type == ZIP_DEFLATED:
>   if not zlib:
>      raise RuntimeError, \
>      "De-compression requires the (missing) zlib module"
>      # zlib compress/decompress code by Jeremy Hylton of CNRI
>            dc = zlib.decompressobj(-15)
>            bytes = dc.decompress(bytes)  ###  <------ right here
>


The basic problem is that the zipfile module is asking the "dc" object
to decompress the whole file at once -- so you would need (at least)
enough memory to hold both the compressed file (C) and the
uncompressed file (U). There is also a possibility that this could
rise to 2U instead of U+C -- read a few lines further on:

bytes = bytes + ex

>Is there anyway to modify how my code is approaching this

You're doing the best you can, as far as I can tell.

> or perhaps
>how the zipfile code is handling it

Read this:
http://docs.python.org/lib/module-zlib.html

If you think you can work out how to modify zipfile.py to feed
dc.decompressobj a chunk of data at a time, properly manipulating
dc.unconsumed_tail, and keeping memory usage to a minimum, then go for
it :-)

Reading the source of the Python zlib module, plus this page from the
zlib website could be helpful, perhaps even necessary:
http://www.gzip.org/zlib/zlib_how.html

See also the following post to this newsgroup:
From: John Goerzen <jgoer... at complete.org>
Newsgroups: comp.lang.python
Subject: Fixes to zipfile.py [PATCH]
Date: Fri, 07 Mar 2003 16:39:25 -0600

... his patch obviously wasn't accepted :-(


> or do I need to just invest in more
>RAM? I currently have 512 MB and thought that would be plenty....
>perhaps I was wrong :-(.

Before you do anything rash (hacking zipfile.py or buying more
memory), take a step back for a moment:

Is this a one-off exercise or a regular exercise? Does it *really*
need to be done programatically? There will be at least one
command-line unzipper program for your platform . One-off req't: do it
manually.
Regular: Try using the unzipper manually; if all the available
unzippers on your platform die with a memory allocation problem then
you really have a problem. If it works, then instead of using the
zipfile module, use the unzipper program from your Python code via a
subprocess.

HTH,
John




From caseyhHAMMER_TIME at istar.ca  Thu May 12 11:44:38 2005
From: caseyhHAMMER_TIME at istar.ca (Casey Hawthorne)
Date: Thu, 12 May 2005 15:44:38 GMT
Subject: Is there a better way to delete the image from a Tkinter button other
	than the following:
Message-ID: <6fu68191masor8oniue2tiiikpmo0ld3fp@4ax.com>

Is there a better way to delete the image from a Tkinter button other
than the following:

- reconstructing the button

- image=blank.gif


--
Regards,
Casey


From philippe at philippecmartin.com  Tue May 24 14:01:37 2005
From: philippe at philippecmartin.com (Philippe C. Martin)
Date: Tue, 24 May 2005 18:01:37 GMT
Subject: Python 2.4.1 installation problem
References: <UhJke.2086$TJ2.1566@newssvr11.news.prodigy.com>
Message-ID: <5_Jke.640$4N2.134@newssvr30.news.prodigy.com>

I had not realized (silly me) that Python might need external libraries in
order to support specific modules.

I have installed the bz2 and readline devel packages re-configured/made and
everythin os now working.




Philippe C. Martin wrote:

> Hi,
> 
> I am trying to install 2.4.1 on a new machine and have the following
> problems.
> 
> 1) I'm on MDK 10.1
> 2) The system had 2.3.4 installed in /usr , I deleted the lib
> 3) I ran ./configure --prefix=/usr, then make, then make install,
> everything went OK
> 
> 
> If I run Python, I get
> 
> File "/etc/pythonrc.py", Line 2 in ?
> ImportError: no module readline
> 
> 
> 
> I also tried to run one of my script and got an import error on bz2.
> 
> 
> I have 2.4.1 running OK on another machine with the exact same distro.
> 
> 
> Any clue ?
> 
> Thanks,
> 
> Philippe



From http  Fri May 27 04:04:48 2005
From: http (Paul Rubin)
Date: 27 May 2005 01:04:48 -0700
Subject: More Rewrite Request Within SocketServer?
References: <mailman.163.1117179489.18027.python-list@python.org>
	<7xr7ftkt91.fsf@ruckus.brouhaha.com>
	<mailman.164.1117180279.18027.python-list@python.org>
Message-ID: <7xacmhgkm7.fsf@ruckus.brouhaha.com>

John Abel <jabel at plus.net> writes:
> Unfortunately not.  verify_request is called before process_request
> which launches the thread ( in the ThreadingMixIn version ).  Unless I
> passed the flag as an argument to the thread, and then had it reset.
> Hmmmmm, worth thinking about,

If verify_request is finished before the new thread starts, then I'd
think it could set a flag and the new thread could find it.  You get a
race condition only if both threads are trying to mess with the flag
simultaneously.


From temp at mclift.fsnet.co.uk  Mon May  2 15:52:04 2005
From: temp at mclift.fsnet.co.uk (temp at mclift.fsnet.co.uk)
Date: 2 May 2005 12:52:04 -0700
Subject: Sequences in list
Message-ID: <1115063524.407859.273070@o13g2000cwo.googlegroups.com>

Hi All,

I wonder could someone help me with this?

What I want to do is search through a list of letters and look for
adjacent groups of letters that form sequences, not in the usual way of
matching say abc to another appearance later on in the list but to look
for transposed patterns.

The groups of letters can be made up of between 2 to 4 letters.
It is not know beforehand how the groups are formed, so I can't say
here is a group, look for a sequence formed from this.
There must be at least three appearances of the groups for the sequence
to be pass.
More than one sequence may show in a list, i.e. first abc, bcd and cde
followed by bd, df, fa, ac at some later point.
Ideally I would like to know the start and end position of the
sequence/sequences.

I'm looking for patterns such as these:

['a', 'b', 'c', 'b', 'c', 'd', 'c', 'd', 'e']
['a', 'c', 'f', 'c', 'e', 'h', 'e', 'g', 'c']
['c', 'a', 'a', 'f', 'f', 'd', 'd', 'b']

But these would be wrong:

['a', 'b', 'c', 'b', 'c', 'd', 'c', 'd', 'e', 'f', 'a', 'd'] - This one
fails because of the 'jump' of the last group of three letters in
relation to the others. To pass the last group would need to have been
def. However, the previous three groups are ok and would be passed as a
sequence.

['a', 'c', 'f', 'a', 'f', 'e', 'e', 'g', 'c'] - Here, although the
first and last groups have a similar sequence this would fail because
of the intervening group (afe) not following the pattern.



Thanks for any help,

Malcolm



From plsullivan63 at gmail.com  Mon May 16 13:10:44 2005
From: plsullivan63 at gmail.com (plsullivan)
Date: 16 May 2005 10:10:44 -0700
Subject: newbie - variable "buried in quotes"
In-Reply-To: <b_ydnZRWVMLjTBXfRVn-iQ@powergate.ca>
References: <1116260476.332975.87680@g49g2000cwa.googlegroups.com>
	<7pmdnSlf65zMTRXfRVn-2A@powergate.ca>
	<b_ydnZRWVMLjTBXfRVn-iQ@powergate.ca>
Message-ID: <1116263444.937821.134150@g14g2000cwa.googlegroups.com>

Ok, I see how concatenation is called for here. I'll try to use the
tutorial to figure that one out. Look out I'll probably be back! Thanks
for the help.
Phil



From roccomoretti at hotpop.com  Mon May 30 11:26:12 2005
From: roccomoretti at hotpop.com (Rocco Moretti)
Date: Mon, 30 May 2005 10:26:12 -0500
Subject: prime number
In-Reply-To: <1117435844.389867.193900@g49g2000cwa.googlegroups.com>
References: <1117421732.677244.237730@g49g2000cwa.googlegroups.com>
	<86wtphtm3f.fsf@guru.mired.org>
	<1117435844.389867.193900@g49g2000cwa.googlegroups.com>
Message-ID: <d7fbaj$og8$1@news.doit.wisc.edu>

lostinpython wrote:
> But needless to say, I'm stumped on this
> problem.  I keep ending up in a never ending loop.

I've been told that the trick with recursion/iteration is to always 
determine what your ending condition is first, and then construct the 
body of the recursion/loop to reach that ending condition eventually. If 
you post the specific code which is giving you problems, people here can 
point out why you're missing the exit.


From fabio.pliger at siavr.it  Mon May  2 18:16:26 2005
From: fabio.pliger at siavr.it (Fabio Pliger)
Date: Mon, 02 May 2005 22:16:26 GMT
Subject: How close program in the wxPython?
References: <1115056835.472334.163220@z14g2000cwz.googlegroups.com>
Message-ID: <_Exde.77295$IN.1326796@twister2.libero.it>


"Tian" <wangtianthu at gmail.com> ha scritto nel messaggio
news:1115056835.472334.163220 at z14g2000cwz.googlegroups.com...
> I have made a program in wxpython, but how could i exit the program? I
> am using wxFrame for my window, what is the function to close the
> program?
>
> Thanks!!
>

Wich version of wx? You cannot exit the program clicking "x" in the top
right of the win?
TO exit you can also bind the EVT_CLOSE event.....

F.P.




From jhe13586 at bigpond.net.au  Sun May 22 04:32:26 2005
From: jhe13586 at bigpond.net.au (Joal Heagney)
Date: Sun, 22 May 2005 08:32:26 GMT
Subject: Python Polymorphism
In-Reply-To: <mailman.60.1116054738.29328.python-list@python.org>
References: <20050512200045.85674.qmail@web52604.mail.yahoo.com><mailman.498.1115931491.29826.python-list@python.org>	<yfswtq2jtz1.fsf@black4.ex.ac.uk>
	<mailman.60.1116054738.29328.python-list@python.org>
Message-ID: <usXje.11385$E7.4211@news-server.bigpond.net.au>

Fredrik Lundh wrote:
> (I do find this new "I'm going to nitpick on single sentences, no matter
> what context they appears in" trend a bit boring, frankly.  if you think
> that a statement may be misinterpreted, add a clarification or a footnote.
> don't assume that you're the only one who know how things work).

Agree. It also seems to be part of a general trend of increased 
flaming/bickering in comp.lang.python over the last half-decade.

When I started frequenting the python newsgroup a couple of years ago, I 
noticed the big difference between it and other newsgroups was a 
willingness to help others to learn and an awareness that "We were all 
once beginners."

Yes, I know the (present) argument behind that is:
"Why should I have to explain the same things 1000x over to people who 
can't use Google or read the tutorials.", but back in 1999-2000, the 
solution the community had informally settled on, was for people to help 
those just below them in experience/proficiency. (Including politely 
pointing others to Google or the Tutorials.)

The "elites" helped the "powerusers".
The "powerusers" helped the "medium-term users."
The "medium-term users" helped the "year-long users" and
The "year-long users" helped the "newbies".

Rather than condescendingly blast someone for asking a "newbie" 
question, nearly everyone but the "year-long users" would just ignore 
the question, knowing that the "newbies" would get help from someone who 
may have only learnt the solution one or two months ago. As a result, 
new users were quickly brought into the group and up to speed, and they 
often had the desire to now help others who encountered the same problem.

"Gee, _fred_ really helped me out there, without making me feel like a 
complete idjit. Oh, somebody is asking the same problem. Rather than 
waste _fred_'s time repeating himself, I know enough that I can cover 
this question."

So in the interest of restoring the pleasantness and cooperation I 
experienced when I first joined, I ask that people do the following:

"If you're sick of answering newbie questions, and don't think you can 
do so politely, for the sake of the community, DON'T!"

You're not that necessary.

Joal Heagney



From kent37 at tds.net  Mon May 30 22:27:40 2005
From: kent37 at tds.net (Kent Johnson)
Date: Mon, 30 May 2005 22:27:40 -0400
Subject: how to prepend string to a string?
In-Reply-To: <1117498752.591304.42280@g44g2000cwa.googlegroups.com>
References: <1117498752.591304.42280@g44g2000cwa.googlegroups.com>
Message-ID: <429bcb76$1_1@newspeer2.tds.net>

flamesrock wrote:
> so I know you can append a string. But how do you *prepend* a string,
> as shown in the following code
> 
> #dirList = ['depth1','depth2','depth3']
> #string = """position"""
> #for x in len(dirList):
> #   string += '>> %s'%dirList.pop()    #(????????????)
> #
> 
> to return
> position>> depth1 >> depth2 >> depth3

ISTM the problem is not prepending, but getting the elements of dirList in the order you want. If 
you iterate over the list normally you get the desired result:
dirList = ['depth1','depth2','depth3']
string = """position"""
for x in dirList:
    string += '>> %s'% x

Kent


From tomlis at notmyisp.pl  Wed May 25 03:43:38 2005
From: tomlis at notmyisp.pl (Tomasz Lisowski)
Date: Wed, 25 May 2005 09:43:38 +0200
Subject: Strange behaviour of floating point constants in imported modules
In-Reply-To: <hae391d0ignv4v336au1n1tv2n18n7j8ca@4ax.com>
References: <4291b2c0$1@news.home.net.pl>
	<hae391d0ignv4v336au1n1tv2n18n7j8ca@4ax.com>
Message-ID: <42942ca7$1@news.home.net.pl>

> There is no guarantee at all that a .pyc file is good for any purpose
> outside the machine that produced it.  In practice, however, you
> *should* be able to rely on no surprises if you have the same platform
> and the same version of Python; do you?

Python 2.3.5 and 2.3.3 on the test machine - it is the same major and 
minor version of the interpreter. I think it should be fine. The 
platform - Windows XP on both machines - difference is in the language 
version of Windows, and in the locale setting of the decimal point ('.' 
and ',')

> 
> How did you transfer the .pyc files from one box to the other? A
> Windows installer? A ZIP file? FTP using text mode? Plain-text
> attachments to an e-mail message?

E-mailed in a ZIP file

>>but recently we 
>>have discovered an annoying problem. In a module, there is the following 
>>code fragment:
>>
>>Deg2Rad = math.pi/180.0
>>angleEPS = 0.5
>>angle0B = angleEPS*Deg2Rad
>>
>>which calculates 'angle0B' as the angle of a half of a degree, converted 
>>to radians. The module has been compiled on an English Windows XP 
>>machine, and then tested on a Polish Windows XP workstation.
>>
>>What was our astonishment, when various exceptions started to be raised 
>>on a test machine (no problem on the original English-version Windows 
>>XP). We have traced them to the fact, that both angleEPS and angle0B 
>>were found to be ZERO (!!!), whereas in reality, angle0B is about 0.008. 
> 
> 
> What evidence do you have? Have you disassembled the .pyc file on both
> boxes and diff'ed the results? Have you computed checksums on both
> boxes?

I have prepared a 'debug' version of the module, printing out some 
variables. The printouts on a test machine showed ZERO values, where 
there should be non-zero ones (0.008). The original machine, where the 
modules were compiled, showed the correct values.

> 
> 
>>And this all happened silently, without any error during the import of 
>>the module!
>>
>>What's the reason of this error? I start thinking, that it may be 
>>related to the fact, that the decimal point on the Enlish Windows XP is 
>>the '.' character, and on the Polish one - ','.
> 
> 
> This is *extremely* unlikely. Firstly, you are (I understand) talking
> about a .pyc file, that was produced on an English Windows box.  Even
> though the "180.0" and the "0.5" are visible as character strings in
> the .pyc file, Python sure doesn't use the locale when it loads a .pyc
> file.

If I modify the decimal point setting in the Regional Settings in the 
Control Panel to the dot character '.' - everything seems to work fine. 
Whenever it is set to the comma ',' - floating point constants, like 0.5 
are considered ZERO by the import statement.

> 
> Secondly, even if you are talking about a .py file, Python takes
> absolutely no notice of the locale when it compiles the .py file.
> Polish programmers write "0.5", not "0,5". Read the language reference
> manual, section 2.4.5 -- it uses ".", not "whatever the decimal point
> character might be in your locale". If it did depend on locale, you
> would need a locale declaration at the top of the file, if one wanted
> .py files to be portable internationally; ever seen or heard of such a
> declaration?

Right! The language syntax requires to use the dot regardless of the 
locale, BUT the constants are written to the .pyc file in a string form, 
probably using repr(), WHICH APPARENTLY DEPENDS ON THE LOCALE (!), when 
the documentation states, that the built-in float(), str() functions are 
locale-unaware (the locale module provides appropriate functions 
supporting the locale).

> 
> Thirdly, if the dot was interpreted as something other than a decimal
> point, then what? Perhaps assign a tuple (0, 5), or perhaps a syntax
> error; zero is achieved under what conditions?

No, it is not a problem with possibly using the comma instead of a dot 
in the SOURCE - there only a dot can be used. That's clear.

> 
> It's more likely that the .pyc file has been damaged somehow. AFAIK
> they don't have checksums.

Very unlikely. I have made these test also directly, sharing the folder 
with the .pyc files on the LAN, and running the program from the test 
machine. Then, the .pyc files were not manipulated at all.

> 
> 
>>Is there a good method to avoid this kind of problems? How to make such 
>>distributed modules really portable?
> 
> 
> Distribute source.

Yes, that's an option, but not in this case :)

Tomasz Lisowski


From aahz at pythoncraft.com  Wed May 11 10:36:38 2005
From: aahz at pythoncraft.com (Aahz)
Date: Wed, 11 May 2005 07:36:38 -0700
Subject: CHANGE BayPIGgies: May *THIRD* Thurs
Message-ID: <20050511143638.GA14331@panix.com>

Reminder:

We will *NOT* be meeting the *SECOND* Thursday (this week, May 12).

Our May meeting will be the *THIRD* Thursday, May 19.  This will be our
first meeting at Google, with Alex Martelli's presention on design
patterns.  More details soon!
-- 
Aahz (aahz at pythoncraft.com)           <*>         http://www.pythoncraft.com/

"And if that makes me an elitist...I couldn't be happier."  --JMS


From heiko.wundram at ceosg.de  Mon May  2 09:10:58 2005
From: heiko.wundram at ceosg.de (Heiko Wundram)
Date: Mon, 2 May 2005 15:10:58 +0200
Subject: PyAuthD Beta 2a
In-Reply-To: <200505021258.34970.heiko.wundram@ceosg.de>
References: <200505021258.34970.heiko.wundram@ceosg.de>
Message-ID: <200505021510.58681.heiko.wundram@ceosg.de>

On Monday 02 May 2005 12:58, Heiko Wundram wrote:
> Current Release
> ---------------

Sorry for all the posting, but I'm having trouble setting up Subversion 
properly... Anyway, the release has moved to its final destination:

http://193.174.104.108/svn/repos/PyAuthD/tags/beta-2a

and of course is still accessible through ViewCVS:

http://193.174.104.108/viewcvs

--- Heiko.


From dieter at handshake.de  Fri May 27 10:23:26 2005
From: dieter at handshake.de (Dieter Maurer)
Date: 27 May 2005 16:23:26 +0200
Subject: python24.zip
References: <mailman.249.1116595092.8733.python-list@python.org>
	<428e0cc3$0$29954$9b622d9e@news.freenet.de>
	<x7hdgw2zqi.fsf@handshake.de>
	<428faddd$0$26322$9b622d9e@news.freenet.de>
	<x7vf5bku5d.fsf@handshake.de>
	<4290dc79$0$9989$9b622d9e@news.freenet.de>
	<x71x7wgxsn.fsf@handshake.de>
	<4293a36c$0$29967$9b622d9e@news.freenet.de>
Message-ID: <x7is14agtd.fsf@handshake.de>

"Martin v. L?wis" <martin at v.loewis.de> writes on Tue, 24 May 2005 23:58:03 +0200:
> ... 10.000 failing opens -- a cause for significant IO during startup ? ...

> So I would agree that IO makes a significant part of startup, but
> I doubt it is directory reading (unless perhaps you have an
> absent NFS server or some such).

We noticed the large difference between warm and cold start even when
we run from a zip archive. We expected that the only relevant IO would
go to the zip archives and therefore, we preloaded them to the
OS cache (by reading them sequentially) before the Python start.
To our great surprise, this did not significantly reduced Python's
(cold) startup time. We concluded that there must be other IO
not directed to the zip archives, started investigating and found
the 10.000 opens to non-existing files as the only other
significant IO contingent....


Dieter



From a at b.c  Mon May 30 11:29:13 2005
From: a at b.c (D H)
Date: Mon, 30 May 2005 10:29:13 -0500
Subject: Case Sensitive, Multiline Comments
In-Reply-To: <roy-D01535.22050429052005@reader1.panix.com>
References: <1117137316.140791.210430@g14g2000cwa.googlegroups.com>
	<z5adnQMsOLiL7AffRVn-hQ@comcast.com>
	<roy-D01535.22050429052005@reader1.panix.com>
Message-ID: <kcqdnbPuJZPRrAbfRVn-ig@comcast.com>

Roy Smith wrote:
> In article <z5adnQMsOLiL7AffRVn-hQ at comcast.com>, D H <a at b.c> wrote:
> 
> 
>>Elliot Temple wrote:
>>
>>>Hi I have two questions.  Could someone explain to me why Python is
>>>case sensitive?  I find that annoying.  
>>
>>I do too.  As you've found, the only reason is because it is, and it is 
>>too late to change (it was even too late back in 1999 when it was 
>>considered by Guido).  I guess the most popular case-insensitive 
>>language nowadays is visual basic (and VB.NET).
>>
>> > Also, why aren't there
>>
>>>multiline comments?  Would adding them cause a problem of some sort?
>>
>>Again, just because there aren't and never were.  There is no technical 
>>reason (like for example a parsing conflict) why they wouldn't work in 
>>python.  That's why most python editors have added a comment section 
>>command that prepends # to consecutive lines for you.
> 
> 
> If it really bothers you that there's no multi-line comments, you could 
> always use triple-quoted strings.

Where did I say that?

> I actually don't like multi-line comments.  They're really just syntactic 
> sugar, and when abused, they can make code very difficult to understand.  
> Just wait until the day you're trying to figure out why some C++ function 
> is behaving the way it is and you don't notice that a 50-line stretch of 
> code is commented out with /* at the top and */ at the bottom.

Same with triple quotes, btw.


From peter at engcorp.com  Wed May 11 09:43:39 2005
From: peter at engcorp.com (Peter Hansen)
Date: Wed, 11 May 2005 09:43:39 -0400
Subject: Python Args By Reference
In-Reply-To: <roy-385EA3.06423911052005@reader1.panix.com>
References: <1115769308.136143.74080@f14g2000cwb.googlegroups.com>
	<1182j1daaepv6f4@corp.supernews.com>
	<1115787330.723188.295610@f14g2000cwb.googlegroups.com>
	<roy-385EA3.06423911052005@reader1.panix.com>
Message-ID: <IPqdnexVeJOhkR_fRVn-1w@powergate.ca>

Roy Smith wrote:
> The most common immutable objects you'll see are strings and tuples, and 
> the main reason they're immutable is to allow them to be dict keys.

And ints.  Strings, tuples and ints are the *three* most common 
immutable objects you'll see...

-Peter


From sjmachin at lexicon.net  Wed May 18 22:07:07 2005
From: sjmachin at lexicon.net (John Machin)
Date: Thu, 19 May 2005 12:07:07 +1000
Subject: Comparing 2 similar strings?
References: <24a6d$428b9c10$d1b717f8$2300@PRIMUS.CA>
	<428BA05D.1010600@lsupcaemnt.com>
	<3d9n815cpmavos1fl6ts712h9qogdv3fur@4ax.com>
	<tOydnZJPi5FmeBbfRVn-3A@comcast.com>
Message-ID: <ukqn811uo3qaa5lpihfq1fu71auuslel10@4ax.com>

On Wed, 18 May 2005 20:03:53 -0500, Ed Morton <morton at lsupcaemnt.com>
wrote:

>
>
>John Machin wrote:
>> On Wed, 18 May 2005 15:06:53 -0500, Ed Morton <morton at lsupcaemnt.com>
>> wrote:
>> 
>> 
>>>
>>>William Park wrote:
>>>
>>>
>>>>How do you compare 2 strings, and determine how much they are "close" to
>>>>each other?  Eg.
>>>>    aqwerty
>>>>    qwertyb
>>>>are similar to each other, except for first/last char.  But, how do I
>>>>quantify that?
>>>>
>>>>I guess you can say for the above 2 strings that
>>>>    - at max, 6 chars out of 7 are same sequence --> 85% max
>>>>
>>>>But, for
>>>>    qawerty
>>>>    qwerbty
>>>>max correlation is
>>>>    - 3 chars out of 7 are the same sequence --> 42% max
>>>>
>>>>(Crossposted to 3 of my favourite newsgroup.)
>>>>
>>>
>>>"However you like" is probably the right answer, but one way might be to 
>>>compare their soundex encoding 
>>>(http://foldoc.doc.ic.ac.uk/foldoc/foldoc.cgi?soundex) and figure out 
>>>percentage difference based on comparing the numeric part.
>>>
>> 
>> 
>> Fantastic suggestion. Here's a tiny piece of real-life test data:
>> 
>> compare the surnames "Mousaferiadis" and "McPherson".
>> 
>
>Fantastic test data set. I know how to pronounce McPherson but I'd never 
>have guessed that Mousaferiadis sounds like it.

If you guessed "moose a ferry ah dis" i.e. phonetically you wouldn't
be far wrong. The point is that the two names neither look similar nor
sound similar. It is highly unlikely that one would be corrupted into
the other during either written or spoken communication. However they
get the same soundex code because the soundex method picks out MSFR
and MCPR and says in effect that S===C (sometimes) and F==P
(sometimes).

>
>I assume you were actually being facetious
> and trying to make the point 
>that names that don't look the same on paper can have the same soundex 
>encoding and that's obviously countered with the fact that soundex is 
>just a cheap and cheerful way to find names that probably sound similair 
>which can vary tremendously based on ethnicity or accent.

*If* you want phonetic similarity, there are methods that much better
than soundex, in the sense of fewer false positives and fewer false
negatives. Google for NYSIIS, dolby, metaphone, caverphone.

Cheap? You get what you pay for.

Cheerful? What's the relevance?

Someone who types "Mousaferiadis" into a customer search screen and
gets back several lines of McPherson and MacPherson is unlikely to be
cheerful -- even before we factor in the speed [soundex divides the
universe into a relative small number of buckets].

Someone who's looking for Erin when they should be looking for Aaron
(or vice versa) won't get much cheer out of soundex, either.

>
>It's a reasonable approach to consider given the very loose requirements 
>presented.

Soundex is *NEVER* a reasonable approach to consider. Phonetic
variation is only one consideration. In any case, the OP didn't appear
to be concerned with phonetic variations.




From rganesan at myrealbox.com  Mon May  2 09:49:58 2005
From: rganesan at myrealbox.com (Ganesan Rajagopal)
Date: 02 May 2005 19:19:58 +0530
Subject: Python Challenge ahead [NEW] for riddle lovers
References: <d4u60o$akh$1@news2.netvision.net.il>
	<1114828856.889984.171750@g14g2000cwa.googlegroups.com>
	<1115036638.557573.153250@z14g2000cwz.googlegroups.com>
	<mailman.22.1115040588.6583.python-list@python.org>
Message-ID: <xkvhis21ohyx.fsf@cisco.com>


I am stuck on level 3. I've tried every re that I can think of. Some body
give me a clue. 

Ganesan

-- 
Ganesan Rajagopal




From johnnyb at eskimo.com  Mon May 23 10:29:24 2005
From: johnnyb at eskimo.com (Jonathan Bartlett)
Date: Mon, 23 May 2005 10:29:24 -0400
Subject: What are OOP's Jargons and Complexities?
In-Reply-To: <5jacmmj9aw.fsf@idiom.com>
References: <1116843784.627059.146910@g47g2000cwa.googlegroups.com>
	<5jacmmj9aw.fsf@idiom.com>
Message-ID: <4291f80a@news.tulsaconnect.com>

Mike Meyer wrote:
> "Xah Lee" <xah at xahlee.org> writes:
> 
> So now we find out that Xah Lee is as ignorant of other programming
> languages as he is of Python and Perl.

I think you're misreading some of what is being said.

> Nested subroutines date back to Algol, which was first specified in
> the 50s.

I think the author was speaking in terms of how high a level of a 
language it is, not necessarily how recent it is.

> Actually, classes and other OO concepts come out of simulation programming,
> not as an outgrowth of nested functions. Most of the features one
> associates with OO languages were present in Simula.

Again, I think the author was pointing out that it is an outgrowth 
logically, not necessarily historically.  There is a basic equivalence 
between a class and a group of functions closed over the same variables. 
  I mention something similar in an IBM DeveloperWorks article here:

http://www.ibm.com/developerworks/linux/library/l-highfunc.html

> Function nesting and classes were viewed as independent features. Some 
> OO languages support nesting, others don't. I think it was Grace Murray
> Hopper commenting on Ada who said that "With classes, nesting is for the
> birds."

Doesn't this quote show the opposite?

> Strictly speaking, this isn't true of *any* language. Even the most
> fanatical of languages distinguish between classes, objects and
> methods.

I think the point was that in Java everything is done within the context 
of a class.  You can define methods, but only as a part of a class.  You 
cannot define a function or even a variable that stands on its own.

> But IIRC, Java comes with a set of low-level types that don't have
> classes associated with them.

But still, it does not allow you, the programmer, to do the same.

Jon
----
Learn to program using Linux assembly language
http://www.cafeshops.com/bartlettpublish.8640017


From wangtianthu at gmail.com  Wed May  4 14:45:26 2005
From: wangtianthu at gmail.com (Tian)
Date: 4 May 2005 11:45:26 -0700
Subject: How close program in the wxPython?
In-Reply-To: <mRxde.862$Jz2.175@newssvr19.news.prodigy.com>
References: <1115056835.472334.163220@z14g2000cwz.googlegroups.com>
	<mRxde.862$Jz2.175@newssvr19.news.prodigy.com>
Message-ID: <1115232326.670485.206700@g14g2000cwa.googlegroups.com>

I know how to capture window close event, but what i want to do is to
close window using commands. now i am simply using "sys.exit()" to
close the whole program. but it seems that window close events will are
be generated in this case. is there any function in wxpython that i can
use to close application window, yet generate the windows close event?



From maxm at mxm.dk  Wed May  4 04:29:56 2005
From: maxm at mxm.dk (Max M)
Date: Wed, 04 May 2005 10:29:56 +0200
Subject: PHPParser pod Zope
In-Reply-To: <d5a0eo$e7m$05$1@news.t-online.com>
References: <yttaxdmad3aa$.1cemtbg8lyvba.dlg@40tude.net>
	<4277d8ea$0$18802$636a15ce@news.free.fr>
	<1115181234.612599.83930@g14g2000cwa.googlegroups.com>
	<mailman.142.1115193359.6583.python-list@python.org>
	<d5a0eo$e7m$05$1@news.t-online.com>
Message-ID: <4278875e$0$295$edfadb0f@dread12.news.tele.dk>

Peter Otten wrote:
> Josef Meile wrote:
> 
> [Non-English/non-Polish answers to a post in Polish]
> 
>>I don't find this two replies funy :-(. I think it is impolite to make
>>fun of the OP. You could say: "The official language is english" or
>>something like that. And if somebody knows the language he speaks, then
>>a pointer to an appropiate list would be usefull.

As far as I know, there is no rule that you have to use english in this 
forum. But it is a lot easier to get answers if you do.


-- 

hilsen/regards Max M, Denmark

http://www.mxm.dk/
IT's Mad Science


From timothy at open-networks.net  Tue May 10 06:51:48 2005
From: timothy at open-networks.net (Timothy Smith)
Date: Tue, 10 May 2005 20:51:48 +1000
Subject: sync dir's
In-Reply-To: <20050510091012.GA16575@mylene.ghaering.de>
References: <428043D7.8030203@open-networks.net>
	<d5plm4$fq$1@sea.gmane.org>	<428060FA.8070207@open-networks.net>
	<20050510091012.GA16575@mylene.ghaering.de>
Message-ID: <42809244.7080306@open-networks.net>

Gerhard Haering wrote:

>On Tue, May 10, 2005 at 05:21:30PM +1000, Timothy Smith wrote:
>  
>
>>i need something which has a python library, so far i haven't seen 
>>anything like that for rsync. i'll check out the others but
>>    
>>
>
>http://osx.freshmeat.net/projects/pysync/
>
>    """
>    Pysync has both a demonstration implementation of the rsync and
>    related algorithms in pure Python, and a high speed librsync Python
>    extension. The pure Python is not fast and is not optimized, however
>    it does work and provides a simple implementation of the algorithm
>    for reference and experimentation. It includes a combination of
>    ideas taken from librsync, xdelta, and rsync. The librsync Python
>    extension is less flexible and harder to understand, but is very
>    fast.
>    """
>  
>
pysync hasn't been worked on in years by the looks of it. no new 
releases since 03. and the last release was for 2.1, so i'm dubious 
about it working at all? the windows installer doesn't work either.


From py.adriano at gmail.com  Wed May  4 08:19:18 2005
From: py.adriano at gmail.com (Adriano Monteiro)
Date: Wed, 4 May 2005 09:19:18 -0300
Subject: About Encapsulation
Message-ID: <29ec215405050405197969bc36@mail.gmail.com>

Hey folks,

I wanna know more about encapsulation in python. Is it fully suported?
How can I define the encapsulation statements for methods and attributes?

Regards!

[]'s!


-- 

Adriano Monteiro Marques
www.gopython.com.br
py.adriano at gmail.com

I'm FREE... Are you?
(PYTHON powered)


From gh at ghaering.de  Fri May 20 20:45:16 2005
From: gh at ghaering.de (Gerhard Haering)
Date: Sat, 21 May 2005 02:45:16 +0200
Subject: [ANN] pysqlite 2.0.2 released
Message-ID: <20050521004516.GA2327@mylene.ghaering.de>

This is a minor bugfix release.

Wiki, bugtracker, downloads at http://pysqlite.org/

If you missed 2.0.1, it fixed a bug that could happen if user-defined
functions/aggregates were getting out of scope. It's a fatal bug that
will crash your application if you encounter it.

- Code changes to allow compilation on MacOS X Tiger

- Fixed a few compilation warnings that appeared under GCC 4.0.

- Refactored code so cursors are closed ASAP. This means that statements are
  now finalized as soon as the last row was fetched. In order to achieve this,
  pysqlite is always prefetching exactly one row.

- Removed the type objects STRING, NUMBER, DATETIME, ... from the module,
  because pysqlite cannot deliver the type code anyway, so these type objects
  are useless, if not even confusing.
-- 
Gerhard H?ring - gh at ghaering.de - Python, web & database development
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From igorcarron at gmail.com  Tue May 31 12:20:25 2005
From: igorcarron at gmail.com (igorcarron at gmail.com)
Date: 31 May 2005 09:20:25 -0700
Subject: How do you drive-by-wire a car using Python ?
In-Reply-To: <c3dum2-dph.ln1@lairds.us>
References: <1117478120.880612.75250@g44g2000cwa.googlegroups.com>
	<mailman.262.1117485409.18027.python-list@python.org>
	<1117531526.205312.192360@f14g2000cwb.googlegroups.com>
	<c3dum2-dph.ln1@lairds.us>
Message-ID: <1117556425.289856.148930@z14g2000cwz.googlegroups.com>

Cameron,

Good point, I know you are a newbie :-). Let me help you out, just tell
the guy in the hallway that for the recognition of the spelling for
garbage in any other languages we use the zipfile module as pointed out
in
http://pegasusbridge.blogspot.com/2005/05/on-being-innovative-part-i.html
"...Using the Right Classification Approach

One of our approach to make classification of images for the purpose of
road following as well as obstacle avoidance is based on defining some
type of distance between drivable and non-drivable scenes. There are
many different projection techniques available in the literature. Let
us take the example of the "zipping-classifier" mechanism and how we
are using it for obstacle avoidance. This technique uses a compressor
like Winzip or 7-zip to produce some type of distance between files
(here images.) A very nice description of it can be read here...."

Hope this helps :-)

Cheers,

Igor.



From qwweeeit at yahoo.it  Tue May 17 15:58:17 2005
From: qwweeeit at yahoo.it (qwweeeit at yahoo.it)
Date: 17 May 2005 12:58:17 -0700
Subject: newbie running IDLE with command line arguments
In-Reply-To: <1116349009.098767.317970@g44g2000cwa.googlegroups.com>
References: <1116349009.098767.317970@g44g2000cwa.googlegroups.com>
Message-ID: <1116359897.142957.135280@g44g2000cwa.googlegroups.com>

Hi,
also if you print only 'host',  running the script, you have to pass
all the 3 parameters, like:
python socket_script.py  myserver 567  'All is OK!'
The parameter sys.argv[0] is of course the script 's name (in this
example: socket_script.py)
Bye.



From http  Wed May 18 08:25:28 2005
From: http (Paul Rubin)
Date: 18 May 2005 05:25:28 -0700
Subject: super() and automatic method combination
Message-ID: <7xvf5gra9z.fsf_-_@ruckus.brouhaha.com>

I'm trying the super() function as described in Python Cookbook, 1st ed,
p. 172 (Recipe 5.4).

    class A(object):
        def f(self):
                print 'A'


    class B(object):
        def f(self):
                print 'b'


    class C(A,B):
        def f(self):
                super(c,self).f()
                print 'C'

    def test(cls):
       x = cls()
       x.f()

    test(C)

I have the impression that this is supposed to call the f method
in both A and B, so it should print
   A
   B
   C
or maybe
  B
  A
  C
depending on the resolution order.  However, it only calls A.f and not B.f.

I also notice that if I say


    class B(object):
        def f(self):
            super(B,self).f()
            print 'b'

then 
  test(B)
raises an exception since B has no superclass with an f method.  That
doesn't seem like such a good thing necessarily.

Anyway, is there a preferred way of writing this example so that C.f
automatically calls both A.f and B.f?

It would be nice to make some decorators to do CLOS-like automatic
method combination, something like:

   class C(A,B):
     @aftermethod
     def f(self):
       print 'C'

   test(C)

would call A.f and B.f and then call C.f.

   class C(A,B):
     @beforemethod
     def f(self):
       print 'C'

   test(C)

would call C.f and then call A.f and B.f.  This would not be exactly
the same as calling super, since it should not be an error to call a
beforemethod or aftermethod when the superclass doesn't have its own
method for that operation.  (I'm not sure how CLOS does this.  I've
played with Flavors (a forerunner of CLOS) but have never actually
used CLOS).


From ivoras at _-_fer.hr  Mon May 16 04:53:29 2005
From: ivoras at _-_fer.hr (Ivan Voras)
Date: Mon, 16 May 2005 10:53:29 +0200
Subject: Resizing VListBox on parent (wxPython)
In-Reply-To: <d68n5m$hqk$1@bagan.srce.hr>
References: <d68n5m$hqk$1@bagan.srce.hr>
Message-ID: <d69n2f$qe3$1@bagan.srce.hr>

Ivan Voras wrote:

>   - panel, vertical BoxSizer
>     - a single VListBox

Forgot to mention it - I'm using wx.GROW flag on both of them.


From fumanchu at amor.org  Mon May  2 14:53:04 2005
From: fumanchu at amor.org (Robert Brewer)
Date: Mon, 2 May 2005 11:53:04 -0700
Subject: Quick and dirty dialogs?
Message-ID: <3A81C87DC164034AA4E2DDFE11D258E3771F26@exchange.hqamor.amorhq.net>

andy at andybak.net wrote:
> What's the easiest way for a script to throw up simple dialogs such as
> file select and alerts?
> 
> I thought there was something in the standard library that didn't need
> TK and was cross-platform but I can't seem to get my Google-fu working
> well enough to find it.

If by "didn't need TK" you mean "I don't want to have to learn Tk", try
Steve Ferg's EasyGUI:

http://www.ferg.org/easygui/


Robert Brewer
MIS
Amor Ministries
fumanchu at amor.org


From stevena at neosynapse.net  Thu May 19 16:28:52 2005
From: stevena at neosynapse.net (Steven Arnold)
Date: Thu, 19 May 2005 16:28:52 -0400
Subject: where to look for python employees/contractors?
Message-ID: <bb7fa3f0dd16e477169f60a7faf2f6eb@neosynapse.net>

Where are some of the better places to look for Python developers?  I'm 
aware of the employer's job board on python.org; are there any other 
places that are especially recommended?

I appreciate any thoughts or suggestions,
steve



From fredrik at pythonware.com  Tue May 10 02:36:03 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 10 May 2005 08:36:03 +0200
Subject: Advice needed on __del__
References: <d5o1s1$8h3$1@sea.gmane.org><d5obmp$cqh$1@sea.gmane.org>	<427FBAD4.3070004@anvilcom.com><d5ogv2$2k9$1@sea.gmane.org>
	<42800279.3B26FFF3@pauahtun.org> <42800ACD.5060802@anvilcom.com>
Message-ID: <d5pkaq$sbm$1@sea.gmane.org>

"phil" wrote:

> If someone doesn't know the answer to this question or if noone
> knows the answer to this question

there is no answer to your question. Python works as specified in
the language specification, and the language specification makes
no guarantees.  changes in the CPython interpreter has affected
finalization order before, and may do it again.  nobody will break
your code on purpose, but if it relies on implementation artefacts,
it will break, sooner or later.

you haven't answered my question, btw: why are you using __del__
to do something that the garbage collector should do for you?

</F>





From NAV2_SMTP_Gateway at sunway.edu.my  Sun May 22 20:53:48 2005
From: NAV2_SMTP_Gateway at sunway.edu.my (NAV2_SMTP_Gateway at sunway.edu.my)
Date: Mon, 23 May 2005 08:53:48 +0800
Subject: Content violation
Message-ID: <200505230031.j4N0VNvC025400@gate2a.sunway.edu.my>

Content violation found in email message.

From: python-list at python.org
To: nav2_smtp_gateway at sunway.edu.my

File(s): your_document.pif

Matching filename: *.pif




From peter at engcorp.com  Thu May 19 09:45:39 2005
From: peter at engcorp.com (Peter Hansen)
Date: Thu, 19 May 2005 09:45:39 -0400
Subject: Is Python suitable for a huge, enterprise size app?
In-Reply-To: <d6i08p$22o$1@domitilla.aioe.org>
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>	<jmbsl2-opn.ln1@lairds.us>	<1116442276.918194.194110@g44g2000cwa.googlegroups.com>
	<mailman.163.1116443300.8733.python-list@python.org>
	<428c479f$0$31062$626a14ce@news.free.fr>
	<d6i08p$22o$1@domitilla.aioe.org>
Message-ID: <qcidnZRl9uEDBRHfRVn-qQ@powergate.ca>

Maurice LING wrote:
> It makes big difference (legally) to if the codes are there and someone 
> sees it, to if the codes are locked in some packaged or zipped form and 
> someone reverse-engineer it. It is legally as different as if you drop 
> money on the ground and I pick it up, to pick-pocketing you and take the 
> money.
> 
> Nobody seems to be able to understand this simple logic.

So you're saying that reverse engineering Java bytecode is illegal, 
while doing the same with Python bytecode is not?  Or something like 
that?  (And you're a lawyer, right?  Because if you're not, and you're 
not citing your sources, why is it we should put any value in these 
comments about what is (legally) true?)

-Peter


From steven.bethard at gmail.com  Thu May 19 02:33:42 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Thu, 19 May 2005 00:33:42 -0600
Subject: What's the use of changing func_name?
In-Reply-To: <mailman.191.1116483411.8733.python-list@python.org>
References: <311b5ce105051822477c09c81@mail.gmail.com>	<d6ha7v$kh9$1@sea.gmane.org>
	<mailman.191.1116483411.8733.python-list@python.org>
Message-ID: <0pidnSAcUf3XrhHfRVn-qg@comcast.com>

could ildg wrote:
> Thank you for your help.
> I know the function g is changed after setting the func_name.
> But I still can't call funciton g by using f(), when I try to do
> this, error will occur:
> <code>
> 
>>>>g.func_name="f"
>>>>print g
> 
> <function f at 0x00B2CEB0>
> 
>>>>f()
> 
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
> NameError: name 'f' is not defined
> </code>
> Since the name of g is changed into f, why can't I call it by using f()?
> Should I call it using f through other ways? Please tell me. Thanks~

You're confusing "the func_name attribute of the function object" with 
"one of the names to which the function object is bound".

If you want to be able to invoke the-function-formerly-known-as-g using 
the name 'f', you don't want to change the func_name attribute, you want 
to add 'f' as a name bound to the function object.  In Python, name 
binding is accomplished through the assignment statement:

py> f = g
py> f()
decorating
this is in function g

What is is you're actually trying to do here?

STeVe


From mwm at mired.org  Thu May  5 05:35:23 2005
From: mwm at mired.org (Mike Meyer)
Date: Thu, 05 May 2005 04:35:23 -0500
Subject: Determine ip address
References: <1113570186.181016.249140@f14g2000cwb.googlegroups.com>
	<1115279927.817969.121070@z14g2000cwz.googlegroups.com>
Message-ID: <86d5s66mn8.fsf@guru.mired.org>

[Format recovered from top-posting.]

ontiscal at tenup.com writes:
> codecraig ha scritto:
>>    how can i use python to figure the ip address of the machine which
>> the python script is running on?  I dont mean like 127.0.0.1....but i
>> want the external IP address (such as ipconfig on windows displays).
>
> http://checkip.tk/

That won't work if you're on a NAT'ed network - it will instead return
the external address of the NAT gateway. ipconfig displays the ip
address(es) of the interfaces on the current machine.

You need to use the socket.socket.getsockname method:

py> import socket
py> s = socket.socket()
py> s.connect(("google.com", 80))
py> s.getsockname()
('192.168.1.1', 57581)
py> 

The local ethernet card is 192.168.1.1, the local port for the socket
is 57581.

Note that the presence of multiple interface cards makes the question
ambiguous.

        <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From rbt at athop1.ath.vt.edu  Tue May 17 13:50:08 2005
From: rbt at athop1.ath.vt.edu (rbt)
Date: Tue, 17 May 2005 13:50:08 -0400
Subject: os.popen vs os.system
Message-ID: <d6dasg$32r$1@solaris.cc.vt.edu>

Is it more appropriate to use os.popen or os.system on a windows XP 
client? I'm calling the operting system's shutdown function like this:

restart = os.popen(shutdown -r -f)
print restart.read()
restart.close()

If it matters, I'm doing this remotely over sockets.


From mwm at mired.org  Thu May  5 05:43:18 2005
From: mwm at mired.org (Mike Meyer)
Date: Thu, 05 May 2005 04:43:18 -0500
Subject: Sockets
References: <7nnj71thsiv0pnd316imovuobnbbeqnjrq@4ax.com>
Message-ID: <868y2u6ma1.fsf@guru.mired.org>

Dan <dan at dontspammecauseidontlikit.com> writes:

> I think that the best way to send the notification to this server
> application is via a udp message.  Alternatively, I could use tcp, but
> I don't think I'll need the extra complexity for what I want to do.
> (Other suggestions welcome.)

upd isn't reliable. If you need reliability, you'll have to build it
yourself. In which case, it might be easier to use tcp.

> My problem is how to also listen on a udp port while the process is
> blocked by 'select'.  Should I run a separate thread?  And if so can I
> share the socket connection across the two threads?  (Thread 1 will be
> accepting client connections, thread 2 will we writing data to it.)
> Or should I simply let 'select' time out after some period?

A udp port is just another socket - meaning another file
descriptor. Unix being what it is, I'd expect that select would handle
sockets opened for udp just fine. Have you tried that and had it fail?

     <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From fredrik at pythonware.com  Wed May 18 08:44:48 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Wed, 18 May 2005 14:44:48 +0200
Subject: Reading image dimensions with PIL
References: <428a0f5c$0$13769$db0fefd9@news.zen.co.uk>
Message-ID: <d6fdal$uvq$1@sea.gmane.org>

Will McGugan wrote:

> I'm writing an app that downloads images. It rejects images that are
> under a certain size - whithout downloading them completely. I've
> implemented this using PIL, by downloading the first K and trying to
> create a PIL image with it. PIL raises an exception because the file is
> incomplete, but the image object is initialised with the image
> dimensions, which is what I need. It actualy works well enough, but I'm
> concerened about side-effects - since it seems an unconventional way of
> working with PIL. Can anyone see any problems with doing this? Or a
> better method?

the "right" way to do this is to use the ImageFile.Parser class.  see the
last snippet on this page for an example:

    http://effbot.org/zone/pil-image-size.htm

</F> 





From alet at unice.fr  Mon May  9 08:20:36 2005
From: alet at unice.fr (Jerome Alet)
Date: Mon, 09 May 2005 14:20:36 +0200
Subject: [ANNOUNCE] PyKota v1.08 is out
References: <pan.2003.06.13.19.46.21.516963@unice.fr>
Message-ID: <pan.2005.05.09.12.20.36.907064@unice.fr>

This one is completely outdated, sorry for the inconvenience.

In addition I wasn't able to cancel it because of some error on my part...

Sorry again

Jerome


From janeaustine50 at hotmail.com  Tue May 17 02:28:40 2005
From: janeaustine50 at hotmail.com (janeaustine50 at hotmail.com)
Date: 16 May 2005 23:28:40 -0700
Subject: Anyway to designating the encoding of the "source" for compile?
References: <1116087091.856022.155340@z14g2000cwz.googlegroups.com>
	<1116263722.499345.73260@g43g2000cwa.googlegroups.com>
	<sg2i8119lqdrlu0sb6atgrj88cgjrda6f0@4ax.com>
	<1116286039.267037.91500@o13g2000cwo.googlegroups.com>
	<1116287070.202497.16340@g44g2000cwa.googlegroups.com>
	<dndi81lj2s610u1rm1q8n088iturvee2bt@4ax.com>
Message-ID: <1116311320.740175.94590@g49g2000cwa.googlegroups.com>

John Machin wrote:
> On 16 May 2005 16:44:30 -0700, janeaustine50 at hotmail.com wrote:
[snip]
>
>
> Like I said, *ALL* you have to do (like in any other Unicode-aware
> app) is decode your user input into Unicode (you *don't* need to
parse
> bits and pieces of it) and feed it in ... like this:
>
> >>> user_input_kr = "inside=u'\xc7\xd1\xb1\xdb'"
> >>> user_input_uc = user_input_kr.decode('euc-kr')
> >>> user_input_uc
> u"inside=u'\ud55c\uae00'"
> >>> s = compile(user_input_uc, '', 'single')
> >>> exec s
> >>> inside
> u'\ud55c\uae00'
> >>> # right
>
> HTH,
> John

Thank you but there is still a problem.

|>>> s='euckr="\xc7\xd1";uni=u"\xc7\xd1"'
|>>> su=s.decode('euc-kr')
|>>> su
|u'euckr="\ud55c";uni=u"\ud55c"'
|>>> c=compile(su,'','single')
|>>> exec c
|>>> euckr,uni
|('\xed\x95\x9c', u'\ud55c')
|>>>

As you see the single's result is turned into UTF-8 encoding.



From lbates at syscononline.com  Wed May 18 10:37:07 2005
From: lbates at syscononline.com (Larry Bates)
Date: Wed, 18 May 2005 09:37:07 -0500
Subject: Plone personalization
In-Reply-To: <1116424936.623323.75060@f14g2000cwb.googlegroups.com>
References: <1116424936.623323.75060@f14g2000cwb.googlegroups.com>
Message-ID: <YNidnSOiJZRDzxbfRVn-vA@comcast.com>

Plone/Zope does support the environment you describe.  Viacom
uses Zope (and I think Plone) to provide their live video
streaming from their site.

Since Plone/Zope are free you can download and test to your
heart's desire.

Larry Bates

miumiun at gmail.com wrote:
> I'm conducting some research about CMS systems and I have limited the
> choices to several that fit my needs. Many of them have live demos, so
> I can try and see, but I didn't find such for Plone. Is there one? I
> also didn't see one very important feature - personalization.
> 
> I'm not sure if I am using the correct term but I my company we call
> personalization the ability of the site to show different content
> depending to the user who has logged in or, told in other words -
> content element level security. Does Plone support this? I want to be
> able to create a menu item that is visible only for specific users (or
> roles) and the same for the content elements. Can you think of some
> other alias for this feature that is mentioned on
> http://www.cmsmatrix.org/matrix?func=viewDetail&wid=2&listingId=1002 so
> I can check for other CMSs whether they support it.
> 
> Thanks all.
> 
> And a final question - does anyone have any idea is the integration of
> live video streams in Plone (or maybe another CMS) hard to achieve? Sth
> like this http://lieblinx.net.au/Media/Streaming
> 


From wuwei23 at gmail.com  Tue May 24 03:12:52 2005
From: wuwei23 at gmail.com (alex23)
Date: 24 May 2005 00:12:52 -0700
Subject: How to use protocols.msn.FileSend and protocols.msnFileReceive
In-Reply-To: <97627ec1.0505232143.867c98b@posting.google.com>
References: <97627ec1.0505232143.867c98b@posting.google.com>
Message-ID: <1116918772.816126.317740@g43g2000cwa.googlegroups.com>

I think Joe was trying to encourage you to provide some more
information so that someone _can_ help you...

Mentioning in the subject that your question is about Twisted would
certainly be a step in the right direction, as would at _least_
touching on what you're intending to do, what you've tried, what
problems you've encountered, what documentation you've read and what
issues you're not following.

I have zero experience with Twisted, so I can't provide any help
myself, but clearing up your own question might encourage someone who
does know to answer.

In other words, the easier you make it for someone to answer your
question, the more inclined they'll be to answer it.

Good luck.

-alex23



From Sebastien.Boisgerault at gmail.com  Fri May 13 16:25:57 2005
From: Sebastien.Boisgerault at gmail.com (=?iso-8859-1?q?S=E9bastien_Boisg=E9rault?=)
Date: 13 May 2005 13:25:57 -0700
Subject: 80 bit precision ?
In-Reply-To: <mailman.50.1116011033.29328.python-list@python.org>
References: <mailman.50.1116011033.29328.python-list@python.org>
Message-ID: <1116015957.305652.70370@g44g2000cwa.googlegroups.com>


Not in the core language or the std library.

However, if you are insterested in high-precision
computations, gmpy may be useful:

http://sourceforge.net/projects/gmpy/

To be honest, I have never used it ;). A review
would be appreciated.

Regards,

SB



From bill.mill at gmail.com  Thu May  5 12:15:12 2005
From: bill.mill at gmail.com (Bill Mill)
Date: Thu, 5 May 2005 12:15:12 -0400
Subject: dictionary comparison
In-Reply-To: <1115306371.818120.150340@f14g2000cwb.googlegroups.com>
References: <1115306371.818120.150340@f14g2000cwb.googlegroups.com>
Message-ID: <797fe3d40505050915766ad076@mail.gmail.com>

On 5 May 2005 08:19:31 -0700, rickle <devrick88 at gmail.com> wrote:
> I'm trying to compare sun patch levels on a server to those of what sun
> is recommending.  For those that aren't familiar with sun patch
> numbering here is a quick run down.
> 
> A patch number shows up like this:
> 113680-03
> ^^^^^^ ^^
> patch#  revision
> 
> What I want to do is make a list.  I want to show what server x has
> versus what sun recommends, and if the patch exists, but the revision
> is different, I want to show that difference.
> 
> Here are some sample patches that sun recommends:
> 117000-05
> 116272-03
> 116276-01
> 116278-01
> 116378-02
> 116455-01
> 116602-01
> 116606-01
> 
> Here are some sample patches that server x has:
> 117000-01
> 116272-02
> 116272-01
> 116602-02
> 
> So there are some that are the same, some that sun recommends that
> server x doesn't have, and some where the patch is the same but the
> revision is different.
> 
> I've thrown the data into dictionaries, but I just can't seem to figure
> out how I should actually compare the data and present it.  Here's what
> I have so far (the split is in place because there is actually a lot
> more data in the file, so I split it out so I just get the patch number
> and revision).  So I end up with (for example) 116272-01, then split so
> field[0] is 116272 and field[1] is 01.
> 
> def sun():
>         sun = open('sun-patchlist', 'r')
>         for s in sun:
>                 sun_fields = s.split(None, 7)
>                 for sun_field in sun_fields:
>                         sun_field = sun_field.strip()
>                 sun_patch = {}
>                 sun_patch['number'] = sun_fields[0]
>                 sun_patch['rev'] = sun_fields[1]
>                 print sun_patch['number'], sun_patch['rev']
>         sun.close()
> 
> def serverx():
>         serverx = open('serverx-patchlist', 'r')
>         for p in serverx:
>                 serverx_fields = p.split(None, 7)
>                 for serverx_field in serverx_fields:
>                         serverx_field = serverx_field.strip()
>                 serverx_patch = {}
>                 serverx_patch['number'] = serverx_fields[0]
>                 serverx_patch['rev'] = serverx_fields[1]
>                 print serverx_patch['number'], serverx_patch['rev']
>         serverx.close()
> 

The first thing you should notice about this code is that you copied a
good amount of code between functions; this should be a huge warning
bell that something can be abstracted out into a function. In this
case, it's the parsing of the patch files.

Also, you should see that you're creating a new dictionary every
iteration through the loop, and furthermore, you're not returning it
at the end of your function. Thus, it's destroyed when the function
exits and it goes out of scope.

<snip>

Anyway, since you at least made an effort, here's some totally
untested code that should (I think) do something close to what you're
looking for:

def parse_patch_file(f):
    patches = {}
    for line in f:
        patch, rev = line.strip().split('-')
        patches[patch] = rev
    return patches

def diff_patches(sun, serverx):
    for patch in sun:
        if not serverx.has_key(patch):
            print "Sun recommends patch %s" % patch
    for patch in serverx:
        if not sun.has_key(patch):
            print "Serverx has unnecessary patch %s" % patch

def diff_revs(sun, serverx):
    for patch, rev in sun.iteritems():
        if serverx.has_key(patch) and rev != serverx[patch]:
            print "Sun recommends rev %d of patch %s; serverx has rev %d"\
                % (rev, patch, serverx[patch])

if __name__ == '__main__':
    sun = parse_patch_file(open('sun-patchlist'))
    serverx = parse_patch_file(open('serverx-patchlist'))
    diff_patches(sun, serverx)
    diff_revs(sun, serverx)

Hope this helps.

Peace
Bill Mill
bill.mill at gmail.com


From ivanlan at pauahtun.org  Mon May  9 20:38:17 2005
From: ivanlan at pauahtun.org (Ivan Van Laningham)
Date: Mon, 09 May 2005 18:38:17 -0600
Subject: Advice needed on __del__
References: <d5o1s1$8h3$1@sea.gmane.org> <d5obmp$cqh$1@sea.gmane.org>
	<427FBAD4.3070004@anvilcom.com> <d5ogv2$2k9$1@sea.gmane.org>
Message-ID: <42800279.3B26FFF3@pauahtun.org>

Hi All--

Fredrik Lundh wrote:
>
> Python is not C++.
> 

I dunno if this makes QOTW, but I vote we put this in our list text that
goes out with each and every list message.

There will still be a lot of people who don't read it, but at least
we'll get to say, "We told you so."

<do-buddhists-get-to-say-that?>-ly y'rs,
Ivan;-) 
----------------------------------------------
Ivan Van Laningham
God N Locomotive Works
http://www.pauahtun.org/
http://www.foretec.com/python/workshops/1998-11/proceedings.html
Army Signal Corps:  Cu Chi, Class of '70
Author:  Teach Yourself Python in 24 Hours


From http  Fri May 20 23:08:25 2005
From: http (Paul Rubin)
Date: 20 May 2005 20:08:25 -0700
Subject: first release of PyPy
References: <mailman.264.1116625088.8733.python-list@python.org>
	<1116629407.638782.145950@g47g2000cwa.googlegroups.com>
	<1116644536.741250.249860@g44g2000cwa.googlegroups.com>
Message-ID: <7xsm0hjmxi.fsf@ruckus.brouhaha.com>

beliavsky at aol.com writes:
> > PyPy is really awesome and if it succeeds in speed demands after the
> > translation phase I believe that the project will shift the power
> > within the Python community on the long run.
> 
> Could you please explain this statement? Who will gain power, and who
> will lose it? Are you suggesting that CPython and PyPy developers are
> competing?

I interpreted it to mean that it would bring power into the Python
community from outside, e.g., Python would become more competitive with
other languages that are currently beating it on performance.


From jasondrew72 at gmail.com  Thu May 19 16:38:07 2005
From: jasondrew72 at gmail.com (Jason Drew)
Date: 19 May 2005 13:38:07 -0700
Subject: Convert from numbers to letters
In-Reply-To: <mailman.224.1116530388.8733.python-list@python.org>
References: <1116511005.900715.107260@o13g2000cwo.googlegroups.com>
	<1116519193.037429.93560@o13g2000cwo.googlegroups.com>
	<1116529140.470352.129690@z14g2000cwz.googlegroups.com>
	<mailman.224.1116530388.8733.python-list@python.org>
Message-ID: <1116535087.901874.167870@g43g2000cwa.googlegroups.com>

We weren't really backwards; just gave a full solution to a half-stated
problem.

Bill, you've forgotten the least-lines-of-code requirement :-)

Mine's still a one-liner (chopped up so line breaks don't break it):

z = lambda cp: (int(cp[min([i for \
    i in xrange(0, len(cp)) if \
    cp[i].isdigit()]):])-1,
    sum(((ord(cp[0:min([i for i in \
    xrange(0, len(cp)) if \
    cp[i].isdigit()])][x])-ord('A')+1) \
    * (26 ** (len(cp[0:min([i for i in \
    xrange(0, len(cp)) if \
    cp[i].isdigit()])])-x-1)) for x in \
    xrange(0, len(cp[0:min([i for i in \
    xrange(0, len(cp)) if \
    cp[i].isdigit()])]))))-1)

print z("B14")
# gives (13, 1)

Maybe brevity isn't the soul of wit after all ...



From rkern at ucsd.edu  Sat May 14 22:20:24 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Sat, 14 May 2005 19:20:24 -0700
Subject: converting a set into a sorted list
In-Reply-To: <1116120701.520116.315230@f14g2000cwb.googlegroups.com>
References: <1116120701.520116.315230@f14g2000cwb.googlegroups.com>
Message-ID: <d66bkt$bgc$2@sea.gmane.org>

MackS wrote:
> Dear all,
> 
> I've got several large sets in my program. After performing several
> operations on these I wish to present one set to the user [as a list]
> sorted according to a certain criterion. Is there any direct way to do
> so? Or must I
> 
> list = []
> 
> for item in set1:
>    list.append(item)
> 
> list.sort(....)
> 
> Can I somehow avoid doing this in two stages? Can I somehow avoid first
> creating a long list only to immediately sort it afterwards?

In Python 2.4,

In [1]:sorted?
Type:           builtin_function_or_method
Base Class:     <type 'builtin_function_or_method'>
String Form:    <built-in function sorted>
Namespace:      Python builtin
Docstring:
     sorted(iterable, cmp=None, key=None, reverse=False) --> new sorted list

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From miki.tebeka at zoran.com  Tue May  3 02:20:47 2005
From: miki.tebeka at zoran.com (Miki Tebeka)
Date: Tue, 3 May 2005 09:20:47 +0300
Subject: BitKeeper for Python?
In-Reply-To: <87d5s9aeit.fsf@cenderis.demon.co.uk>
References: <IOade.1185051$Xk.343206@pd7tw3no>
	<slrnd7bsn8.pa3.nick@irishsea.home.craig-wood.com>
	<87ll6xaizm.fsf@cenderis.demon.co.uk>
	<du7zmvdu4iw.fsf@mozart.cc.tut.fi>
	<d55co1$cv0m$1@netnews.upenn.edu>
	<87d5s9aeit.fsf@cenderis.demon.co.uk>
Message-ID: <20050503062047.GK2296@zoran.com>

Hello Bruce,

> Typical, you wait years for a decent replacement for CVS, and then...
It's called subversion and it has Python bindings.

Bye.
--
------------------------------------------------------------------------
Miki Tebeka <miki.tebeka at zoran.com>
http://tebeka.bizhat.com
The only difference between children and adults is the price of the toys
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From opengeometry at yahoo.ca  Tue May 10 12:26:04 2005
From: opengeometry at yahoo.ca (William Park)
Date: Tue, 10 May 2005 12:26:04 -0400
Subject: Strip white spaces from source
References: <1115590492.587606.108810@z14g2000cwz.googlegroups.com>
Message-ID: <75635$4280e09c$d8fea303$7130@PRIMUS.CA>

qwweeeit at yahoo.it wrote:
> Hi all,
> I need to limit as much as possible the lenght of a source line,
> stripping white spaces (except indentation).
> For example:
> .   .   max_move and AC_RowStack.acceptsCards ( self, from_stack, cards
> )
> must be reduced to:
> .   .   max_move and AC_RowStack.acceptsCards(self,from_stack,cards)
> 
> My solution has been (wrogly): ''.join(source_line.split())
> which gives:
> max_moveandAC_RowStack.acceptsCards(self,from_stack,cards)
> 
> Without considering the stripping of indentation (not a big problem),
> the problem is instead caused by the reserved words (like 'and').
> 
> Can you help me? Thanks.

Perhaps, you can make indent(1) do what you want.  It's designed for C
program, but...

-- 
William Park <opengeometry at yahoo.ca>, Toronto, Canada
ThinFlash: Linux thin-client on USB key (flash) drive
           http://home.eol.ca/~parkw/thinflash.html


From simon.brunning at gmail.com  Thu May 26 05:20:13 2005
From: simon.brunning at gmail.com (Simon Brunning)
Date: Thu, 26 May 2005 10:20:13 +0100
Subject: how to import a module from a arbitraty path?
In-Reply-To: <NtOdnXdnsZi5swjfRVn-oA@comcast.com>
References: <NtOdnXdnsZi5swjfRVn-oA@comcast.com>
Message-ID: <8c7f10c605052602201ede8d30@mail.gmail.com>

On 5/26/05, Andy Leszczynski
<leszczynscyATnospam.yahoo.com.nospam at bag.python.org> wrote:
> I have a program which is going to dynamicly load components from some
> arbitrary defined paths. How to do that?

You can locate them with os.walk and fnmatch. Then you can temporarily
add the directory to sys,path, and import using __import__().

-- 
Cheers,
Simon B,
simon at brunningonline.net,
http://www.brunningonline.net/simon/blog/


From test at freenet.de  Mon May 23 05:52:37 2005
From: test at freenet.de (Test)
Date: Mon, 23 May 2005 10:52:37 +0100
Subject: Test
Message-ID: <DDAC168FB5C09749AD96D27804CA35D105FC82DB@SETUBAL>

Its only test.
Please klick on a link to test:
http://www.surf-tipps.info/fclick/fclick.php?03

Thanks



From onurb at xiludom.gro  Wed May  4 07:48:05 2005
From: onurb at xiludom.gro (bruno modulix)
Date: Wed, 04 May 2005 13:48:05 +0200
Subject: Form and Database
In-Reply-To: <ogQde.78771$IN.1346884@twister2.libero.it>
References: <ogQde.78771$IN.1346884@twister2.libero.it>
Message-ID: <4278b676$0$288$626a14ce@news.free.fr>

v wrote:
> Please help..... I'm new with Python.
> Using Boa (or Pythoncard) and pysqlite, how can I read/write from/to
> database, thanks

First learn how to read/write data from your db (without any gui stuff). 
Then learn how to use your gui (without any db stuff). Then make the two 
working together, and you're done !-)

-- 
bruno desthuilliers
ruby -e "print 'onurb at xiludom.gro'.split('@').collect{|p| 
p.split('.').collect{|w| w.reverse}.join('.')}.join('@')"
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for 
p in 'onurb at xiludom.gro'.split('@')])"


From mikael at isy.liu.se  Tue May 31 04:03:46 2005
From: mikael at isy.liu.se (Mikael Olofsson)
Date: Tue, 31 May 2005 10:03:46 +0200
Subject: prime number
In-Reply-To: <1117435844.389867.193900@g49g2000cwa.googlegroups.com>
References: <1117421732.677244.237730@g49g2000cwa.googlegroups.com>
	<86wtphtm3f.fsf@guru.mired.org>
	<1117435844.389867.193900@g49g2000cwa.googlegroups.com>
Message-ID: <d7h5p1$ss0$1@news.island.liu.se>

lostinpython wrote:
> What civil engineers need with all this programming is beyond me.  We
> have to learn another language to program our CADD software, which I
> find much easier than this.  

According to my experience, almost every engineer - civil or not - uses 
programming at least occationally. So every engineering education 
program should involve at least some programming.

/Mikael Olofsson

Universitetslektor (Senior Lecturer [BrE], Associate Professor [AmE])
Link?pings universitet

-----------------------------------------------------------------------
E-Mail:  mikael at isy.liu.se
WWW:     http://www.dtr.isy.liu.se/en/staff/mikael
Phone:   +46 - (0)13 - 28 1343
Telefax: +46 - (0)13 - 28 1339
-----------------------------------------------------------------------
Link?pings kammark?r: www.kammarkoren.com   Vi s?ker tenorer och basar!


From michele.simionato at gmail.com  Sun May 22 10:32:16 2005
From: michele.simionato at gmail.com (Michele Simionato)
Date: 22 May 2005 07:32:16 -0700
Subject: A newbie metaclass question
In-Reply-To: <mailman.306.1116756948.8733.python-list@python.org>
References: <mailman.306.1116756948.8733.python-list@python.org>
Message-ID: <1116772336.574986.13740@z14g2000cwz.googlegroups.com>

There are many resources for metaclasses on the Net.
There was a Wiki page on www.python.org about them,
but I don't find it now. So, I will refer you to the links
I have handy:

http://www-106.ibm.com/developerworks/linux/library/l-pymeta.html
http://www-128.ibm.com/developerworks/linux/library/l-pymeta2/index.html
http://www.reportlab.org/~andy/accu2005/pyuk2005_simionato_wondersofpython.zip
 
                 Michele Simionato



From claird at lairds.us  Tue May 24 16:08:05 2005
From: claird at lairds.us (Cameron Laird)
Date: Tue, 24 May 2005 20:08:05 GMT
Subject: Dr. Dobb's Python-URL! - weekly Python news and links (May 24)
References: <d6vgpr$jlb$1@lairds.us> <d6vm00$h1s$1@news.doit.wisc.edu>
Message-ID: <u5ecm2-duk.ln1@lairds.us>

In article <d6vm00$h1s$1 at news.doit.wisc.edu>,
Rocco Moretti  <roccomoretti at hotpop.com> wrote:
>Simon Brunning wrote:
>> QOTW: "If you're sick of answering newbie questions, and don't think you
>> can do so politely, for the sake of the community, DON'T!  You're not that
>> necessary." - Joal Heagney
>
>Taken out of context, Joal's comments might seem a bit rude and abrasive 
>- I don't think they were meant that way. People really should look at 
>the context of the quote - it'a actually a very constructive suggestion.
>
>(If the direct link works:)
>http://groups-beta.google.com/group/comp.lang.python/msg/6330925dcecb6bdb
			.
			.
			.
General principle:  if in doubt about the significance of an item in
"Python-URL!", assume that it's intended in a constructive way.  In
our emphasis on brevity, though, we sometimes abbreviate to the point
that ambiguity obscures the civility.  Thanks to Mr. Moretti for his
well-referenced observation.


From p at ulmcnett.com  Sat May 14 02:47:34 2005
From: p at ulmcnett.com (Paul McNett)
Date: Fri, 13 May 2005 23:47:34 -0700
Subject: Solipsis: Python-powered Metaverse
In-Reply-To: <d644gq$gfs$1@sea.gmane.org>
References: <09da815umhec164dm8ja0k6l2h4i8icm36@4ax.com>	<20050514001331.15422.1782566605.divmod.quotient.37593@ohm>
	<d644gq$gfs$1@sea.gmane.org>
Message-ID: <42859F06.7090908@ulmcnett.com>

Terry Reedy wrote:
> While the above is not directly on-topic for c.l.p, it does suggest 
> possible design considerations for users of the socket module and packets 
> built on top ;-).
> -- including Solipsis, which is such.

I contributed to the thread going kind of off-topic, so I'll just follow 
up by saying that the Solipsis Metaverse could have the potential to be 
the killer app that gets Python noticed in a widespread, mainstream 
fashion (with no value judgement attached to that - I'm not sure that 
development would be particularly good or bad for Python). The ability 
for anyone to design their own entities and then put them into a common 
metaverse, where they exist in "concrete" fashion just by virtue of 
being there at a given position and size, and that none of the entities 
in the metaverse are managed by a central server, is just amazingly 
cool. The coolness factor could be like that of the web in 1993, with 
Python enabling all kinds of normal people to learn programming so they 
can make their mark with their avatar in the virtual world - indeed more 
and more of daily life may become dependent on dealing with people in 
the metaverse instead of face-to-face. And once the masses learn how to 
really wield the power of their computers, watch out the human race just 
evolved a little more.

But the ability for maliciousness to be unleashed is an unfortunate 
side-effect too, and the Python community should be prepared for the 
language becoming the scapegoat, but then again each entity in the 
metaverse is really its own server, and can limit its input/output just 
like we do now with Python web apps.

Um, when I started this message I meant to bring it back on topic. Oh, 
well. Hiro forgives me, I am sure.

-- 
pkm ~ http://paulmcnett.com



From sjmachin at lexicon.net  Tue May 31 19:31:28 2005
From: sjmachin at lexicon.net (John Machin)
Date: Wed, 01 Jun 2005 09:31:28 +1000
Subject: DLL load failed: The specified procedure could not be found
In-Reply-To: <d7i37t$k6n$1@nwrdmz02.dmz.ncs.ea.ibs-infra.bt.com>
References: <d7i37t$k6n$1@nwrdmz02.dmz.ncs.ea.ibs-infra.bt.com>
Message-ID: <429cf3cf$1@news.eftel.com>

Bill Davy wrote:
> sys.path:
>  H:\Husky\HostPC\V1\SHIP\Debug
>  H:\Husky\HostPC\V1\SHIP
>  E:\Bill\Python-2.4.1\PCbuild\python24_d.zip
>  C:\Python24\Lib
>  C:\Python24\DLLs
>  C:\Python24\Lib\lib-tk
>  H:\Husky\HostPC\V1\RunSHIP
>  H:\Husky\HostPC\V1\Debug
>  C:\Python24
>  C:\Python24\lib\site-packages
> 
> Traceback (most recent call last):
>   File "H:\Husky\HostPC\V1\SHIP\test1.py", line 7, in ?
>     import SHIP
>   File "H:\Husky\HostPC\V1\Debug\SHIP.py", line 5, in ?
>     import _SHIP
> ImportError: DLL load failed: The specified procedure could not be found.
> 
> a) What "specified procedure "
> b) SHIP was made by SWIG

and so presumably was _SHIP ... therefore it appears that you might be 
better off asking for help on the SWIG mailing list.

> c) Is there some way to find out which DLL and which procedure is involved?

One would expect given the reported context (import _SHIP) that it has 
found (somewhere!) a DLL called "_SHIP.pyd" and is looking in it 
(unsuccessfully) for an entrypoint called "init_SHIP".

The usual suspect here would be the C (or C++) compiler messing with the 
name of the entrypoint; possible messes include underscores at the front 
and/or frame size at the end e.g. "_initfoo at 12" instead of just 
"initfoo". Possibly you are using a C[++] compiler that's not the one 
that SWIG thinks you are using.

But exactly which DLL? Given your "interesting" sys.path, it might be an 
idea to run python with the -v argument, so you can see where all your 
imports are resolved.

Once you have worked out which _SHIP.pyd is the cause, you can inspect 
it and determine what entrypoint(s) it has.

HTH,
John


From bedouglas at earthlink.net  Sun May  1 16:33:18 2005
From: bedouglas at earthlink.net (bruce)
Date: Sun, 1 May 2005 13:33:18 -0700
Subject: BitKeeper for Python?
In-Reply-To: <20050501202554.15422.229561071.divmod.quotient.12330@ohm>
Message-ID: <0e9c01c54e8d$03aecdb0$0301a8c0@Mesa.com>

john....

you might check out trac and subversion/svn... CVS is often used as well...

keep in mind that any app equires that you be willing to out in a certain
amount of time for the admin of the project tool. if what you're creating is
open source, you might as well go ahead and use the sourceforge.org
site/app...

-bruce


-----Original Message-----
From: python-list-bounces+bedouglas=earthlink.net at python.org
[mailto:python-list-bounces+bedouglas=earthlink.net at python.org]On Behalf
Of Jp Calderone
Sent: Sunday, May 01, 2005 1:26 PM
To: python-list at python.org
Subject: Re: BitKeeper for Python?


On Sun, 01 May 2005 20:16:40 GMT, John Smith <not at home.com> wrote:
>I am going to be working with some people on a project that is going to be
>done over the internet. I am looking for a good method of keeping
everyone's
>code up to date and have everyone be able to access all the code including
>all the changes and be able to determine what parts of the code were
>changed.
>
>If it were opensource that would be even better.
>

  Have you checked out this page?


http://www.google.com/search?hl=en&lr=&q=version+control+system&btnG=Search

  Jp
--
http://mail.python.org/mailman/listinfo/python-list



From gabor at nekomancer.net  Tue May 10 10:31:10 2005
From: gabor at nekomancer.net (Gabor Farkas)
Date: Tue, 10 May 2005 16:31:10 +0200
Subject: www.pythonchallange.com
In-Reply-To: <7eec1$4280c5eb$3eb01f24$10197@news.flashnewsgroups.com>
References: <7eec1$4280c5eb$3eb01f24$10197@news.flashnewsgroups.com>
Message-ID: <534f0$4280c619$3eb01f24$10197@news.flashnewsgroups.com>

Gabor Farkas wrote:
> www.pythonchallange.com

sorry, wanted to send it to someone else..

(too tired...)

;(

gabor


From tony.meyer at gmail.com  Sun May 15 20:06:18 2005
From: tony.meyer at gmail.com (Tony Meyer)
Date: Mon, 16 May 2005 12:06:18 +1200
Subject: python-dev Summary for 2005-04-16 through 2005-04-30
Message-ID: <ECBA357DDED63B4995F5C1F5CBE5B1E801B0F722@its-xchg4.massey.ac.nz>

[The HTML version of this Summary is available at
http://www.python.org/dev/summary/2005-04-16_2005-04-30.html]



======================
Summary Announcements
======================

---------------
Exploding heads
---------------

After a gentle introduction for our first summary, python-dev really let
loose last fortnight; not only with the massive PEP 340 discussion, but
also more spin-offs than a `popular`_ `TV`_ `series`_, and a few
stand-alone threads.

Nearly a week into May, and the PEP 340 talk shows no sign of abating;
this is unfortunate, since Steve's head may explode if he has to write
anything more about anonymous blocks.  Just as well there are three of us!

This summary has ended up rather late (we're starting summarising May,
already).  I have to admit that this is all my (Tony's) fault - we got
a draft done nicely on time, and then a week of really good thesis
writing distracted me and I neglected to send this out.  My apologies,
and I promise to try harder in future!

.. _popular: http://imdb.com/title/tt0060028/
.. _TV: http://imdb.com/title/tt0098844/
.. _series: http://imdb.com/title/tt0247082/

[TAM]

-------
PEP 340
-------

A request for anonymous blocks by Shannon -jj Behrens launched a
massive discussion about a variety of related ideas. This discussion
is split into different sections for the sake of readability, but
as the sections are extracted from basically the same discussion,
it may be easiest to read them in the following order:

1. `Localized Namespaces`_

2. `The Control Flow Management Problem`_

3. `Block Decorators`_

4. `PEP 310 Updates Requested`_

5. `Sharing Namespaces`_

6. `PEP 340 Proposed`_

[SJB]


=========
Summaries
=========

--------------------
Localized Namespaces
--------------------

Initially, the "anonymous blocks" discussion focused on introducing
statement-local namespaces as a replacement for lambda expressions.
This would have allowed localizing function definitions to a single
namespace, e.g.::

    foo = property(get_foo) where:
         def get_foo(self):
             ...

where get_foo is only accessible within the ``foo = ...`` assignment
statement. However, this proposal seemed mainly to be motivated by a
desire to avoid "namespace pollution", an issue which Guido felt was not
really that much of a problem.


Contributing threads:

- `anonymous blocks
<http://mail.python.org/pipermail/python-dev/2005-April/052717.html>`__

[SJB]


-----------------------------------
The Control Flow Management Problem
-----------------------------------

Guido suggested that if new syntax were to be introduced for "anonymous
blocks", it should address the more important problem of being able to
extract common patterns of control flow. A very typical example of such
a problem, and thus one of the recurring examples in the thread, is
that of a typical acquire/release pattern, e.g.::

    lock.acquire()
    try:
       CODE
    finally:
       lock.release()

Guido was hoping that syntactic sugar and an appropriate definition of
locking() could allow such code to be written as::

    locking(lock):
       CODE

where locking() would factor out the acquire(), try/finally and
release().  For such code to work properly, ``CODE`` would have to
execute in the enclosing namespace, so it could not easily be converted
into a def-statement.

Some of the suggested solutions to this problem:

- `Block Decorators`_

- `PEP 310 Updates Requested`_

- `Sharing Namespaces`_

- `PEP 340 Proposed`_


Contributing threads:

- `anonymous blocks
<http://mail.python.org/pipermail/python-dev/2005-April/052717.html>`__

[SJB]


----------------
Block Decorators
----------------

One of the first solutions to `The Control Flow Management Problem`_ was
"block decorators".  Block decorators were functions that accepted a
"block object" (also referred to in the thread as a "thunk"), defined a
particular control flow, and inserted calls to the block object at the
appropriate points in the control flow. Block objects would have been
much like function objects, in that they encapsulated a sequence of
statements, except that they would have had no local namespace; names
would have been looked up in their enclosing function.

Block decorators would have wrapped sequences of statements in much the
same way as function decorators wrap functions today. "Block decorators"
would have allowed locking() to be written as::

    def locking(lock):
        def block_deco(block):
            lock.acquire()
            try:
                block()
            finally:
                lock.release()
        return block_deco

and invoked as::

    @locking(lock):
        CODE

The implementation of block objects would have been somewhat
complicated if a block object was a first class object and could be
passed to other functions.  This would have required all variables used
in a block object to be "cells" (which provide slower access than
normal name lookup). Additionally, first class block objects, as a type
of callable, would have confused the meaning of the return statement -
should the return exit the block or the enclosing function?


Contributing threads:

- `anonymous blocks
<http://mail.python.org/pipermail/python-dev/2005-April/052717.html>`__

- `Anonymous blocks: Thunks or iterators?
<http://mail.python.org/pipermail/python-dev/2005-April/053093.html>`__

[SJB]

-------------------------
PEP 310 Updates Requested
-------------------------

Another suggested solution to `The Control Flow Management Problem`_
was the resuscitation of `PEP 310`_, which described a protocol for
invoking the __enter__() and __exit__() methods of an object at the
beginning and ending of a set of statements. This PEP was originally
intended mainly to address the acquisition/release problem, an example
of which is discussed in `The Control Flow Management Problem`_ as the
locking() problem. Unmodified, `PEP 310`_ could handle the locking()
problem defining locking() as::

    class locking(object):
        def __init__(self, lock):
            self.lock = lock
        def __enter__(self):
            self.lock.acquire()
        def __exit__(self):
            self.lock.release()

and invoking it as::

    with locking(lock):
        CODE

In addition, an extended version of the `PEP 310`_ protocol which
augmented the __enter__() and __exit__() methods with __except__() and
__else__() methods provided a simple syntax for some of the
transactional use cases as well.


Contributing threads:

- `PEP 310 and exceptions:
<http://mail.python.org/pipermail/python-dev/2005-April/052857.html>`__

- `__except__ use cases:
<http://mail.python.org/pipermail/python-dev/2005-April/052868.html>`__

- `Integrating PEP 310 with PEP 340
<http://mail.python.org/pipermail/python-dev/2005-April/053039.html>`__


 .. _PEP 310: http://www.python.org/peps/pep-0310.html


[SJB]


------------------
Sharing Namespaces
------------------

Jim Jewett suggested that `The Control Flow Management Problem`_ could
be solved in many cases by allowing arbitrary blocks of code to share
namespaces with other blocks of code. As injecting such arbitrary code
into a template has been traditionally done in other languages with
compile-time macros, this thread briefly discussed some of the reasons
for not wanting compile-time macros in Python, most importantly, that
Python's compiler is "too dumb" to do much at compile time.

The discussion then moved to runtime "macros", which would essentially
inject code into functions at runtime. The goal here was that the
injected code could share a namespace with the function into which it
was injected. Jim Jewett proposed a strawman implementation that would
mark includable chunks of code with a "chunk" keyword, and require
these chunks to be included using an "include" keyword.

The major problems with this approach were that names could "magically"
appear in a function after including a chunk, and that functions that
used an include statement would have dramatically slower name lookup
as Python's lookup optimizations rely on static analysis.

Contributing threads:

- `defmacro (was: Anonymous blocks):
<http://mail.python.org/pipermail/python-dev/2005-April/052854.html>`__

- `anonymous blocks vs scope-collapse:
<http://mail.python.org/pipermail/python-dev/2005-April/052973.html>`__

- `scope-collapse:
<http://mail.python.org/pipermail/python-dev/2005-April/053006.html>`__

- `anonymous blocks as scope-collapse: detailed proposal
<http://mail.python.org/pipermail/python-dev/2005-April/053104.html>`__

[SJB]


----------------
PEP 340 Proposed
----------------

In the end, Guido decided that what he really wanted as a solution to
`The Control Flow Management Problem`_ was the simplicity of something
like generators that would let him write locking() as something like::

    def locking(lock):
        lock.acquire()
        try:
            yield
        finally:
            lock.release()

and invoke it as something like::

    block locking(lock):
        CODE

where the yield statement indicates the return of control flow to
``CODE``. Unlike a generator in a normal for-loop, the generator in
such a "block statement" would need to guarantee that the finally block
was executed by the end of the block statement. For this reason, and
the fact that many felt that overloading for-loops for such non-loops
might be confusing, Guido suggested introducing "block statements" as
a new separate type of statement.

`PEP 340`_ explains the proposed implementation.  Essentially, a
block-statement takes a block-iterator object, and calls its
__next__() method in a while loop until it is exhausted, in much
the same way that a for-statement works now. However, for generators
and well-behaved block-iterators, the block-statement guarantees that
the block-iterator is exhausted, by calling the block-iterator's
__exit__() method. Block-iterator objects can also have values passed
into them using a new extended continue statement. Several people were
especially excited about this prospect as it seemed very useful for a
variety of event-driven programming techniques.

A few issues still remained unresolved at the time this summary was
written:

Should the block-iterator protocol be distinct from the current
iterator protocol? Phillip J. Eby campaigned for this, suggesting that
by treating them as two separate protocols, block-iterators could be
prevented from accidentally being used in for-loops where their cleanup
code would be silently omitted. Having two separate protocols would
also allow objects to implement both protocols if appropriate, e.g.
perhaps sometimes file objects should close themselves, and sometimes
they shouldn't. Guido seemed inclined to instead merge the two
protocols, allowing block-iterators to be used in both for-statements
and block-statements, saying that the benefits of having two very
similar but distinct protocols were too small.

What syntax should block-statements use? This one was still undecided,
with dozens of different keywords having been proposed. Syntaxes that
did not seem to have any major detractors at the time this summary was
written:

* ``EXPR as NAME: BLOCK``

* ``@EXPR as NAME: BLOCK``

* ``in EXPR as NAME: BLOCK``

* ``block EXPR as NAME: BLOCK``

* ``finalize EXPR as NAME: BLOCK``


Contributing threads:

- `anonymous blocks
<http://mail.python.org/pipermail/python-dev/2005-April/052717.html>`__

- `next(arg)
<http://mail.python.org/pipermail/python-dev/2005-April/053156.html>`__

- `PEP 340 - possible new name for block-statement
<http://mail.python.org/pipermail/python-dev/2005-April/053109.html>`__

- `PEP 340: syntax suggestion - try opening(filename) as f:
<http://mail.python.org/pipermail/python-dev/2005-April/053163.html>`__

- `Keyword for block statements
<http://mail.python.org/pipermail/python-dev/2005-April/053184.html>`__

- `About block statement name alternative
<http://mail.python.org/pipermail/python-dev/2005-April/053139.html>`__

- `Integrating PEP 310 with PEP 340
<http://mail.python.org/pipermail/python-dev/2005-April/053039.html>`__


 .. _PEP 340: http://www.python.org/peps/pep-0340.html

[SJB]


------------------
A switch statement
------------------

The switch statement (a la `PEP 275`_) came up again this month, as a
spin-off (wasn't everything?) of the `PEP 340`_ discussion.  The main
benefit of such a switch statement is avoiding Python function calls,
which are very slow compared to branching to inlined Python code. In
addition, repetition (the name of the object being compared, and the
comparison operator) is avoided.  Although Brian Beck contributed a
`switch cookbook recipe`_, the discussion didn't progress far enough to
make any changes or additions to `PEP 275`_.


Contributing threads:

- `switch statement
<http://mail.python.org/pipermail/python-dev/2005-April/052778.html>`__

 .. _PEP 275: http://www.python.org/peps/pep-0275.html
 .. _switch cookbook recipe:
http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/410692
 
[TAM]


----------------
Pattern Matching
----------------

Discussion about a dictionary-lookup switch statement branched out
to more general discussion about pattern matching statements, like
Ocaml's "match", and Haskell's case statement.  There was reasonable
interest in pattern matching, but since types are typically a key
feature of pattern matching, and many of the elegant uses of pattern
matching use recursion to traverse data structures, both of which
hinder coming up with a viable Python implementation (at least while
CPython lacks tail-recursion elimination).

The exception to this is matching strings, where regular expressions
provide a method of pattern specification, and multi-way branches
based on string content is common.

As such, it seems unlikely that any proposals for new pattern matching
language features will be made at this time.


Contributing threads:

- `switch statement
<http://mail.python.org/pipermail/python-dev/2005-April/052778.html>`__

[TAM]


-----------------------------------------
Read-only property access inconsistencies
-----------------------------------------

Barry Warsaw noticed that the exception thrown for read-only properties
of C extension types is a TypeError, while for read-only properties of
Python (new-style) classes is an AttributeError, and `wrote a patch`_ to
clean up the inconsistency.
 
Guido pronounced that this was an acceptable fix for 2.5, and so the change
was checked in.  Along the way, he wondered whether in the long-term,
AttributeError should perhaps inherit from TypeError.

          
Contributing threads:

- `Inconsistent exception for read-only properties?
<http://mail.python.org/pipermail/python-dev/2005-April/052681.html>`__

 .. _wrote a patch:
http://sourceforge.net/tracker/index.php?func=detail&aid=1184449&group_id=54
70&atid=105470 

[TAM]


--------------------
site.py enhancements
--------------------

Bob Ippolito asked for review of a `patch to site.py`_ to solve three
deficiencies for Python 2.5:

- It is no longer true that all site dirs must exist on the filesystem
- The directories added to sys.path by .pth files are not scanned for
further .pth files
- .pth files cannot use os.path.expanduser()

Greg Ewing suggested additionally scanning the directory containing the
main .py file for .pth files to make it easier to have collections of
Python programs sharing a common set of modules.  Possibly swamped by the
`PEP 340`_ threads, further discussion trailed off, so it's likely that
Bob's patch will be applied, but without Greg's proposal.


Contributing threads:

- `site enhancements (request for review)
<http://mail.python.org/pipermail/python-dev/2005-April/052885.html>`__

 .. _patch to site.py: http://python.org/sf/1174614

[TAM]


-------------------------------------
Passing extra arguments when building
-------------------------------------

Martin v. L?wis helped Brett C out with adding an EXTRA_CFLAGS environment
variable to the build process, to enable passing additional arguments to
the compiler, that aren't modified by configure, and that change binary
compatibility (OPT should be used for binary-compatible flags).


Contributing threads:

- `Proper place to put extra args for building
<http://mail.python.org/pipermail/python-dev/2005-April/052746.html>`__

[TAM]


---------------------------
zipfile module improvements
---------------------------

Bob Ippolito pointed out that the "2GB bug" that was `supposed to be fixed`_
was not, and opened a `new bug and patch`_ that should fix the issue
correctly, as well as a bug that sets the ZipInfo record's platform to
Windows, regardless of the actual platform.  He suggested that someone
should consider rewriting the zipfile module to include a repair feature,
and be up-to-date with `the latest specifications`_, and include support
for Apple's zip format extensions.  Charles Hartman added deleting a file
from a zipfile to this list.

Bob suggested that one of the most useful additions to the zipfile module
would be a stream interface for reading and writing
(a `patch to read large items`_ along these lines already exists).  Guido
liked this idea and suggested that Bob rework the zipfile module, if
possible, for Python 2.5.


Contributing threads:

- `zipfile still has 2GB boundary bug
<http://mail.python.org/pipermail/python-dev/2005-April/052887.html>`__

.. _supposed to be fixed: http://python.org/sf/679953
.. _new bug and patch: http://python.org/sf/1189216
.. _the latest specifications:
http://www.pkware.com/company/standards/appnote/
.. _patch to read large items: http://python.org/sf/1121142

[TAM]


-------------------------------------
super_getattro() and attribute lookup
-------------------------------------

Phil Thompson asked a number of questions about super_getattro(), and
attribute lookup.  Michael Hudson answered these, and pointed out that
there has been `some talk`_ of having a tp_lookup slot in typeobjects.
However, he noted that he has many other pots on the boil at the moment,
so is unlikely to work on it soon.

 
Contributing threads:

- `super_getattro() Behaviour
<http://mail.python.org/pipermail/python-dev/2005-April/052655.html>`__

.. _some talk:
http://mail.python.org/pipermail/python-dev/2005-March/052150.html

[TAM]


--------------------------------
Which objects are memory cached?
--------------------------------

Facundo Batista asked about memory caching of objects (for performance
reasons), to aid in explaining how to think using name/object and not
variable/value.  In practice, ints between -5 and 100 are cached,
1-character strings are often cached, and string literals that resemble
Python identifiers are often interned.  It was noted that the reference
manual specifies that immutables *may* be cached, but that CPython
specifics, such as which objects are, are omitted so that people will
not think of them as fixed; Terry Reedy reiterated his suggestion that
implementation details such as this are documented separately, elsewhere.

Guido and Greg Ewing pointed out that when explaining it is important
for the explainees to understand that mutable objects are never in
danger of being shared.
 

Contributing threads:

- `Caching objects in memory
<http://mail.python.org/pipermail/python-dev/2005-April/052844.html>`__

[TAM]


------------------------------
Unregistering atexit functions
------------------------------

Nick Jacobson noted that while you can mark functions to be called with
at exit with the 'register' method, there's no 'unregister' method to
remove them from the stack of functions to be called.  Many suggestions
were made about how this could already be done, however, including using
try/finally, writing the cleanup routines in such a way that they could
detect reentry, passing a class to register(), and managing a list of
functions oneself.

General pearls of wisdom outlined included:

- if one devotes time to "making a case", then one should also devote equal
effort to researching the hazards and API issues.
- "Potentially useful" is usually trumped by "potentially harmful".
- if the API is awkward or error-prone, that is a bad sign.


Contributing threads:

- `atexit missing an unregister method
<http://mail.python.org/pipermail/python-dev/2005-April/052983.html>`__

[TAM]


-----------------------
Pickling buffer objects
-----------------------

Travis Oliphant proposed a patch to the pickle module to allow
pickling of the buffer object.  His use case was avoiding copying
array data into a string before writing to a file in Numeric, while
still having Numeric arrays interact seamlessly with other
pickleable types.  The proposal was to unpickle the object as a
string (since a `bytes object`_ does not exist) rather than to
mutable-byte buffer objects, to maintain backwards compatibility.
Other than a couple of questions, no objections were raised, so a
patch is likely to appear.


Contributing threads:

- `Pickling buffer objects.
<http://mail.python.org/pipermail/python-dev/2005-April/052707.html>`__

.. _bytes object: http://python.org/peps/pep-0296.html

[TAM]


-------------------------------------------------
Referencing counting when entering/exiting scopes
-------------------------------------------------

Matt Barnes noticed that symtable_exit_scope decrefs a borrowed 
reference, which should lead to data corruption ... except that 
symtable_enter_scope leaks a reference.  Since they're called as 
a pair, it works out.  Guido did suggest that it would be better 
if the code were written in a less brittle manner.

Contributing threads:

- `Reference counting when entering and exiting scopes
<http://mail.python.org/pipermail/python-dev/2005-April/052779.html>`__

[Jim Jewett]


===============
Skipped Threads
===============

- `Another Anonymous Block Proposal
<http://mail.python.org/pipermail/python-dev/2005-April/053031.html>`__
- `PEP 340: What is "ret" in block statement semantics?
<http://mail.python.org/pipermail/python-dev/2005-April/053140.html>`__
- `anonymous blocks (off topic: match)
<http://mail.python.org/pipermail/python-dev/2005-April/052759.html>`__
- `Reference counting when entering and exiting scopes
<http://mail.python.org/pipermail/python-dev/2005-April/052779.html>`__
- `How do you get yesterday from a time object
<http://mail.python.org/pipermail/python-dev/2005-April/052712.html>`__
- `shadow password module (spwd) is never built due to error in setup.py
<http://mail.python.org/pipermail/python-dev/2005-April/052679.html>`__
- `Problem with embedded python
<http://mail.python.org/pipermail/python-dev/2005-April/052995.html>`__
- `python.org crashing Mozilla?
<http://mail.python.org/pipermail/python-dev/2005-April/052992.html>`__
- `noob question regarding the interpreter
<http://mail.python.org/pipermail/python-dev/2005-April/053103.html>`__
- `Newish test failures
<http://mail.python.org/pipermail/python-dev/2005-April/052771.html>`__
- `Error checking in init<module> functions
<http://mail.python.org/pipermail/python-dev/2005-April/052847.html>`__
- `a few SF bugs which can (probably) be closed
<http://mail.python.org/pipermail/python-dev/2005-April/052864.html>`__
- `Check out a new way to read threaded conversations.
<http://mail.python.org/pipermail/python-dev/2005-April/052674.html>`__
- `Python 2.1 in HP-UX
<http://mail.python.org/pipermail/python-dev/2005-April/052710.html>`__
- `Python tests fails on HP-UX 11.11 and core dumps
<http://mail.python.org/pipermail/python-dev/2005-April/052652.html>`__
- `IPV6 with Python- 4.2.1 on HPUX
<http://mail.python.org/pipermail/python-dev/2005-April/052656.html>`__
- `Fwd: CFP: DLS05: ACM Dynamic Languages Symposium
<http://mail.python.org/pipermail/python-dev/2005-April/052699.html>`__
- `PyCon 2005 keynote on-line
<http://mail.python.org/pipermail/python-dev/2005-April/052684.html>`__
- `PyCallable_Check redeclaration
<http://mail.python.org/pipermail/python-dev/2005-April/052677.html>`__
- `os.urandom uses closed FD (sf 1177468)
<http://mail.python.org/pipermail/python-dev/2005-April/052716.html>`__
- `Removing --with-wctype-functions support
<http://mail.python.org/pipermail/python-dev/2005-April/052968.html>`__




========
Epilogue
========

This is a summary of traffic on the `python-dev mailing list`_ from
April 16, 2005 through April 30, 2005.
It is intended to inform the wider Python community of on-going
developments on the list on a semi-monthly basis.  An archive_ of
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From elie at flashmail.com  Sun May 15 03:29:12 2005
From: elie at flashmail.com (Eli)
Date: 15 May 2005 00:29:12 -0700
Subject: Question about extending the interperter
In-Reply-To: <mailman.38.1116001567.29328.python-list@python.org>
References: <1115654593.479760.52610@o13g2000cwo.googlegroups.com>
	<1115705398.691970.141980@o13g2000cwo.googlegroups.com>
	<mailman.38.1116001567.29328.python-list@python.org>
Message-ID: <1116142152.142690.152250@z14g2000cwz.googlegroups.com>

I've tried that and it worked. I've used Python to generate wrapper and
it seems ok- I'm yet testing it, so far so good.

thanks,
Elie



From philippe at philippecmartin.com  Sun May 22 08:29:40 2005
From: philippe at philippecmartin.com (Philippe C. Martin)
Date: Sun, 22 May 2005 12:29:40 GMT
Subject: passing arguments
References: <mailman.265.1116627975.8733.python-list@python.org>
Message-ID: <UW_je.12$4N2.3@newssvr30.news.prodigy.com>

Hi,

look at sys.argv

Regards,

Philippe


Jeff Elkins wrote:

> I'm sure this is obvious, but how the heck do pass an argument(s) to a
> python script from the command line?
> 
> Thanks,
> 
> Jeff Elkins



From dberlin at gmail.com  Sun May 15 16:23:40 2005
From: dberlin at gmail.com (dberlin at gmail.com)
Date: 15 May 2005 13:23:40 -0700
Subject: wxPython and a Control Property Editor
Message-ID: <1116188620.303681.282540@g47g2000cwa.googlegroups.com>

Hi,

I'm building a modest GUI editor for myself using wxPython, and I need
some help.
I want to create a nice 'Control Property Editing Window', just like
VisualBasic, Delphi, Visual C++, etc.

After searching for a while, I found an interesting extension for wx
that does exactly this (and very nicely too), but its written in c++
and unavailable in python. I'm not interested in modifying the source
to be compatible with python, so unfortunately that extension is no
longer an option.

I tried searching the demo's of wxPython for something useful, and I
figured the Grid control could be somewhat useful ("wx.Grid using a
custom Table, with non-string data").
The problems with the Grid are -
   - no option to collapse rows (tree-like)
   - can't define different data type (choice, number, ...) for each
row

After also looking at other GUI editor scripts out there, like
wxWidgets, I turn to this group for some help.

Any help would be greatly appreciated.
Thanks.



From anton.vredegoor at gmail.com  Tue May 24 10:58:56 2005
From: anton.vredegoor at gmail.com (Anton Vredegoor)
Date: 24 May 2005 07:58:56 -0700
Subject: Python on a public library computer
In-Reply-To: <1116811321.127978.47970@z14g2000cwz.googlegroups.com>
References: <1116069664.779281.320540@g47g2000cwa.googlegroups.com>
	<87r7g6rbz0.fsf@pobox.com>
	<mailman.67.1116286093.8733.python-list@python.org>
	<1116330665.197293.198950@o13g2000cwo.googlegroups.com>
	<861x858qav.fsf@guru.mired.org>
	<1116417677.506240.261730@g47g2000cwa.googlegroups.com>
	<1116464373.016279.13030@f14g2000cwb.googlegroups.com>
	<1116592130.314355.202930@g44g2000cwa.googlegroups.com>
	<1116811321.127978.47970@z14g2000cwz.googlegroups.com>
Message-ID: <1116946736.837955.298690@o13g2000cwo.googlegroups.com>

alex23 wrote:

> In this case, it sounds like the library is providing computers for
two
> purposes: access to Office tools and to the internet. Given the
> "everything not forbidden is permissable" attitude of most people,
> unless the use is restricted to only those two activities people
> legitimately wanting access will tend to end up waiting for others
who
> have co-opted the services for their own personal end.

But who are those people using this *public* library for their own
personal end? Is it the cannibal elite that is using this public space
to promote microsoft products and 'reducing' their workload (actually I
believe they are making their own job harder) or is it the user who
wants to run public domain software?

The current situation is such that in order to make the system 'safer'
I cannot clear my own cache, so my internet history is visible for the
next user, which compromises *my* security. Surely there should be a
balance between the interests of the provider and the client, but since
in this case the client is also the 'owner' of the service (it's a
*public* library) there should be room to run non-proprietary software.

The connection with the european constitution is exactly about this
shifting of the ownership of public buildings, institutions,
infrastructure etc. *from* the persons using the service *towards* the
people accidentally working in that place.

So social security starts to act like it's an employer, but since they
are also the state, they don't have to pay minimum wages, if one is
treated unfairly it's impossible to get a fair trial. If one doesn't
agree with this treatment they just keep the money they are obliged to
pay (according to our national constituton) to themselves.

Universities start to act like the buildings are extra living room for
the persons working there and in order to get a degree one has to
*work* for a professor.

The elite in the city starts building luxury appartments for their own
people (who are payed with public money stolen one way or the other
from the normal residents in the city) in the natural resorts because
their is some kind of 'shortage' in the housing market.

On the other hand one wants to "make the polluter pay" and creates
taxes for garbage. But these taxes are 'equal' for everyone, meaning
that they are negligible for the rich but a large part of the income of
the poor.

The same goes for fines for speeding or parking tickets. If you're rich
or know the people in the elite you can get away with anything.

The *european* constitution is related to this because our government
wants to limit the discussion to the merits of the document. The
problem is that even with a good constitution a corrupt elite can
interpret the terms in a way that is unfavorable for the poor (almost
anyone is poor or becoming poor by now). And secondly the document is
only intelligible for specialists, so even if it was good, there's no
way to tell.

So we might find ourselves in a situation one day when walking to the
water tap to fill our teakettle a voice will come out of it asking
whether we want *coca* cola or *pepsi* cola. When complaning about this
to our government we will hear something like: 'Look you *have* a
choice it's not like we prefer one brand over the other, so what are
you complaining about? Be silent out you will be removed from our
administration, which means no food, health care, money or friends."

I'm currently mentally analogizing this discussion with the one on
python dev about whether the decimal module should give users 'what
they expect' or conform to industry standards, but I guess one has to
be Dutch to see any connection at all here :-)

The rationale for all of this is that the economy is bad and we have
close to zero growth. We should be like China or other low wage
countries in order to be more competitive.

However the rationale is false! Because we have better infrastructure
here we are *further* up the exponential development curve so we could
have fenomenal growth if we wanted! The fact that this isn't happening
at all has nothing to do with with the economic potential but all the
more with conservative power consolidation tactics.

The media play a very nasty role in all of this. For example the
newspapers are complaining nobody reads paper anymore because of the
internet. IMO it is caused more by nobody wanting to read the same old
selfpromotion anymore. Something comparable is happening with public
television which is not a true representation of the public opinion at
all. Not to say public opinion is always good, but if noone thinks you
are giving the right characterization of the current situation, one is
not likely to want to join the discussion.

Ok, this is getting way to far off topic. Thanks to all for the hints
to get python running here. I'm now contemplating to access the already
running java interpreter that must hide somewher in this IE, and to
start a jython console from there (without even running a new
jview.exe).

Anton

'if you disagree this probably wasn't explained properly'



From claird at lairds.us  Sun May  1 13:08:03 2005
From: claird at lairds.us (Cameron Laird)
Date: Sun, 01 May 2005 17:08:03 GMT
Subject: My personal candidate for QOTW (was: Python interpreter in Basic or
	a Python-2-Basic translator.)
References: <1114953507.031865.244920@g14g2000cwa.googlegroups.com>
Message-ID: <q1efk2-gd7.ln1@lairds.us>

In article <1114953507.031865.244920 at g14g2000cwa.googlegroups.com>,
Engineer <pcolsen at comcast.net> wrote:
			.
			.
			.
>The security 'droids have decided that since the MS Office Suite is a
>"standard" application then software written in MS Office VBA must be
>"safe."  Any other development environments (such as Java, Perl,
			.
			.
			.


From saravanan.d at siemens.com  Tue May 10 01:17:13 2005
From: saravanan.d at siemens.com (Saravanan D)
Date: Tue, 10 May 2005 10:47:13 +0530
Subject: Exception in Python 2.3.3 Interpreter
References: <1114434259.853654.272420@z14g2000cwz.googlegroups.com><d5n76t$pe0$2@news.mch.sbs.de>
	<mailman.202.1115642452.29826.python-list@python.org>
Message-ID: <d5pg4s$rtt$2@news.mch.sbs.de>

Hello,

Component which uses only windows extension modules and callback from C++ to
Python.

- Saravanan D

"Fredrik Lundh" <fredrik at pythonware.com> wrote in message
news:mailman.202.1115642452.29826.python-list at python.org...
> "Saravanan D" <saravanan.d at siemens.com> wrote:
>
> > 03 023ffaa4 1e013182 00000000 055b1250 00637470 python23!cmp_outcome(int
op
> > = 88026108, struct _object * v = 0x00000001, struct _object * w =
> > 0x00000000)+0xa9 [F:\Python-2.3.3\Python-2.3.3\Python\ceval.c @ 3880]
> > 04 023ffb18 1e016ba4 014f3318 00000002 0099f170
python23!eval_frame(struct
> > _frame * f = 0x053f2bfc)+0x542
[F:\Python-2.3.3\Python-2.3.3\Python\ceval.c
> > @ 1965]
> > 05 023ffb30 1e016a69 0099f170 023ffb7c 00000002
> > python23!fast_function(struct _object * func = <Memory access error>,
struct
> > _object *** pp_stack = <Memory access error>, int n = <Memory access
error>,
> > int na = <Memory access error>, int nk = <Memory access error>)+0x94
>
> the above doesn't look very healthy.  does your application involve
> non-standard extensions (including extensions you've written your-
> self)?  does the extensions contain callbacks into Python code?
>
> </F>
>
>
>





From baza41 at gmail.com  Fri May 13 13:24:51 2005
From: baza41 at gmail.com (B)
Date: Fri, 13 May 2005 18:24:51 +0100
Subject: OSx 10.4 lacks pythonIDE?
References: <2005051303214075249%baza@NOSPAMthemauvezoneorguk>
	<mailman.508.1115951783.29826.python-list@python.org>
Message-ID: <BEAAA173.46C%baza41@gmail.com>




On 13/5/05 03:35, in article
mailman.508.1115951783.29826.python-list at python.org, "Robert Kern"
<rkern at ucsd.edu> wrote:

> baza wrote:
>> Where is the IDE in 'Tiger' for the mac? Don't tell me I have to use
>> text edit all the time??
> 
> PythonIDE never came with the OS. You have to install it yourself.
> 
> http://homepages.cwi.nl/~jack/macpython/


That's weird because it was on my iBook disk as a .pkg file when I got it???

Thanks for the link.
Baza



From cjbottaro at alumni.cs.utexas.edu  Thu May 12 11:26:00 2005
From: cjbottaro at alumni.cs.utexas.edu (Christopher J. Bottaro)
Date: Thu, 12 May 2005 10:26:00 -0500
Subject: Python Documentation (should be better?)
References: <mailman.389.1115837608.29826.python-list@python.org>	<1115839271.271071.32710@z14g2000cwz.googlegroups.com>	<mailman.393.1115840571.29826.python-list@python.org>	<1115841659.470657.33320@o13g2000cwo.googlegroups.com>
	<mailman.399.1115844290.29826.python-list@python.org>
	<eL2dnQWPyceN7B_fRVn-1w@comcast.com>
Message-ID: <d5vs3i$54n$2@sea.gmane.org>

Steven Bethard wrote:

> Christopher J. Bottaro wrote:
>> Contrast that with Python.  First off there is no "search" mechanism
>> built into the documentation page (yes I know you can google it, but that
>> just doesn't feel right).
> 
> Um, are you looking at the current documentation page?
> 
> http://docs.python.org/
> 
> In the upper right hand corner, I see a box entitled "Search:" and a
> button that says "submit".

Oops.  I link directly to the tutorial and library reference...=)

> STeVe

-- C



From "none\" at (none)  Sat May 14 15:37:58 2005
From: "none\" at (none) (none)
Date: Sat, 14 May 2005 14:37:58 -0500
Subject: Faster GUI text control
In-Reply-To: <mailman.59.1116053899.29328.python-list@python.org>
References: <A_udnVpGA43xjBjfRVn-iQ@comcast.com>
	<mailman.59.1116053899.29328.python-list@python.org>
Message-ID: <B92dneFEus_FzhvfRVn-gQ@comcast.com>

> 
> no, it would mean writing some python code.  if all you need is a scrolling
> text list, you can simply use the code on this page:
> 
>     http://effbot.org/zone/wck-4.htm
> 
> (see "A scrollable list view, with scrollbar support" and, optionally,
> the virtual data modifications under "Displaying Huge Data Sets")
> 
> the resulting widget will update at constant speed, independent of the
> data size.
> 
> </F>
> 

Thanks for the suggestion.  I looked at that, but I need to be able to 
selectively change colors on parts of the text and I didn't think I 
could do that with a list box.  Am I misunderstanding that?


From xah at xahlee.org  Thu May 26 21:47:58 2005
From: xah at xahlee.org (Xah Lee)
Date: 26 May 2005 18:47:58 -0700
Subject: What are OOP's Jargons and Complexities?
In-Reply-To: <7vWke.2017$W51.14781@typhoon.sonic.net>
References: <1116843761.619249.144790@g47g2000cwa.googlegroups.com>
	<bAske.14563$yx.14338@fe08.lga> <3584469.Aerji1NdQr@yahoo.com>
	<3cWdnbtAM6aZ6g_fRVn-2w@rcn.net>
	<878y24yhst.fsf@ivanova.rotty.yi.org>
	<3fh93fF7set5U1@news.dfncis.de> <9tKdnT-wKq24Uw7fRVn-pA@rcn.net>
	<7vWke.2017$W51.14781@typhoon.sonic.net>
Message-ID: <1117158478.701216.130110@f14g2000cwb.googlegroups.com>

Joe: lang x is strongly typed
Dave: you mean statically typed?
John: no no, that's weakly typed.
Mike: actually, it is dynamically typed!

rely on the morons of the IT industry, every mother fucking one of
them, to sing and propagate jargons.

See also:
http://xahlee.org/UnixResource_dir/writ/jargons.html

 Xah
 xah at xahlee.org
? http://xahlee.org/



From simon.brunning at gmail.com  Fri May 27 10:53:11 2005
From: simon.brunning at gmail.com (Simon Brunning)
Date: Fri, 27 May 2005 15:53:11 +0100
Subject: Incrementing letters
In-Reply-To: <d770dr$7lu$1@nwrdmz03.dmz.ncs.ea.ibs-infra.bt.com>
References: <d770dr$7lu$1@nwrdmz03.dmz.ncs.ea.ibs-infra.bt.com>
Message-ID: <8c7f10c605052707535fea3414@mail.gmail.com>

On 5/27/05, Michael <slick_mick_00 at hotmail.com> wrote:
> Hi,
> I've got a string s, and i want to shift all the letters up by one, eg a->b,
> b->c ........ z->a
> In c++ i can do this quite simply with
> 
> if(C == 'z') C='a';
> else C++;
> 
> but i can't work out how to do this this in python??

Here's one that works on multiple character strings, with carrying.
Rather silly, really.

<http://www.brunningonline.net/simon/blog/archives/001787.html>

-- 
Cheers,
Simon B,
simon at brunningonline.net,
http://www.brunningonline.net/simon/blog/


From bhoel at despammed.com  Mon May 30 15:13:57 2005
From: bhoel at despammed.com (=?utf-8?q?Berthold_H=C3=B6llmann?=)
Date: Mon, 30 May 2005 21:13:57 +0200
Subject: avl tree
References: <pan.2005.05.30.15.30.09.93892@gmail.com>
Message-ID: <m27jhg7ci2.fsf@despammed.com>

Zunbeltz Izaola <zunbeltz at gmail.com> writes:

> Hi,
>
> I'm trying to install avl module from
> http://www.nightmare.com/squirl/python-ext/avl
>
> and i had the following instruction to install
>
> Building:
>
> Unix:
> First, cd $(AVL_LIB), then 'make libavl.a'
>
> Then copy AVLmodule.c into your Modules directory.
> add a few lines like this to your Python/Modules/Setup file.
> ---------------------------------------------------------------------------
> # avl module
> AVL_LIB=/usr/src/other-homes/rushing/python/avl
> avl AVLmodule.o -DDEBUG_AVL -I$(AVL_LIB) -L$(AVL_LIB) -lavl
> -------------------------------------------------------------
>
> I have build livavl.a, but i don't understan where is Python/Modules/Setup
> and where goes the AVLModule.c file goes.

I'm afraid you won't be happy with the code. It's very old and likely
won't compile. We have an inhouse version of this module which
compiles and run on Sparc solaris (32 Bit) and linux x86 with Python
up to 2.4. I fixed some warnigs just today for compilation on Linux
x86_64, it also seems to work on this platform now. Installation is
setup.py based. I'm quite sure we once sent patches to Sam Rushing,
but they never made it into his release. I'll try to publish our
version the next days. 

Regards
Berthold
-- 
berthold at xn--hllmanns-n4a.de / <http://h?llmanns.de/>
bhoel at web.de                 / <http://starship.python.net/crew/bhoel/>


From noway at sorry.com  Mon May 16 21:02:02 2005
From: noway at sorry.com (Giovanni Bajo)
Date: Tue, 17 May 2005 01:02:02 GMT
Subject: question about the id()
References: <428809fc.62d7a08a.1cfe.ffffd7ef@mx.gmail.com>
	<mailman.23.1116212733.8733.python-list@python.org>
	<873bsnxhe0.fsf@hector.domek> <4288d546.86043504@news.oz.net>
	<87hdh3vxaa.fsf@hector.domek>
Message-ID: <eobie.102028$IN.1728201@twister2.libero.it>

Peter Dembinski wrote:

>> BTW, a typical performance optimization (not done automatically by
>> python) is to hoist unchanging-value expressions out of loops, and
>> obj.method is often such an expression, so you will this strategy
>> when people try
>> to squeeze extra performance from their programs.
>
> Good to know.  Is there any advanced optimizer for Python code, which
> would do such things for me (or suggest them, like pychecker does
> for readability)?


Prove that a.f() would not change the meaning of "a.f" after its invokation is
close to impossible.
-- 
Giovanni Bajo




From gsakkis at rutgers.edu  Wed May 11 13:37:36 2005
From: gsakkis at rutgers.edu (George Sakkis)
Date: 11 May 2005 10:37:36 -0700
Subject: Importing modules
References: <1115816747.292060.292200@o13g2000cwo.googlegroups.com>
	<mailman.380.1115830888.29826.python-list@python.org>
Message-ID: <1115833056.919147.74750@g47g2000cwa.googlegroups.com>

"Fredrik Lundh" wrote :

> qwweeeit at yahoo.it wrote:
>
> > To understand a program, however, you need also a flow chart...
>
> so understand a carefully designed modular component structure, you
> have to remove the structure so you can create a flow chart?
>
> did you perhaps stumble upon a strange man with a keg of liquor back
> in the sixties, or what's going on here? ;-)
>
> </F>
>
>
>

In more modern terminology, an analog might be UML sequence diagrams.

George



From lycka at carmen.se  Tue May 31 08:39:47 2005
From: lycka at carmen.se (Magnus Lycka)
Date: Tue, 31 May 2005 14:39:47 +0200
Subject: Report generator for object databases.
In-Reply-To: <1117518987.193897.226100@g43g2000cwa.googlegroups.com>
References: <1117518987.193897.226100@g43g2000cwa.googlegroups.com>
Message-ID: <d7hluk$4ng$1@wake.carmen.se>

Mir Nazim wrote:
> Hi,
> I m planning to use ZODB for an applicaton. Is any one aware of report
> generators like Data Vision, Crystal Reports, fo python object
> databases.

ZODB isn't like a relational database. It doesn't have a
query language etc. In other words, a report generator for
a ZODB application is just a report generator for an
arbitrary Python app. You'll have to use Python to traverse
through your object structures and extract the data you
want.

I don't know of any convenient Python tool for generating
headers or footers or doing grouping and aggregation in any
convenient way in Python, but it's probably rather trivial
Python coding. If it's non-trivial due to your data structures,
it's unlikely that a toolkit would help... Obviously, it's
trivial to code things like accumulators that sum up values
as you iterate over objects.

Concerning page layout, there are several options depending
on your target document format and the kind of reports you
plan to achieve. If you want pdf output, ReportLab is nice.
There are a number of tollkits to help you create HTML,
and there are GUI components such as Tkinter canvas and
correspondning things in wxPython to create on-screen pages
that can also be printed.

If you want diagrams, there are many toolkits, but I
haven't used any of them the last years, so I won't give
any recommendations. Some of them suport several file
formats as well as on-screen presentation in several GUI
toolkits.

Still, there are certainly aspects of this that could fit
in some kind of framework. E.g. if you want aggregated data
to be printed at the bottom of each page, the backend that
determines exact page layout, e.g. a layer over ReportLab
or some other backend that creates text files or HTML should
be able to call back and tell the part of the code that
understands the data when it's time to sum things up. It
might not be until you've fed your "records" into the
backend that you will know that it's time for a page break.
(Another option would be that the report itself includes some
kind of instructions for such aggregates, and that they are
calculated in each backend.)

I'd be interested in such a tool. Actually, the only one I
know of is the one we use here at Carmen, but that's not
publically available, and it's really tied to our applications
and our propietary rules language. I suspect there are other
such inhouse products at other companies though... Maybe some
that are adapted to more arbitrary data sources than ours.


From hemanthps at gmail.com  Thu May 19 02:39:17 2005
From: hemanthps at gmail.com (hemanth)
Date: 18 May 2005 23:39:17 -0700
Subject: What's the use of changing func_name?
References: <311b5ce105051822477c09c81@mail.gmail.com>
	<d6ha7v$kh9$1@sea.gmane.org>
	<mailman.191.1116483411.8733.python-list@python.org>
Message-ID: <1116484757.304855.209270@g44g2000cwa.googlegroups.com>

could ildg wrote:
> Thank you for your help.
> I know the function g is changed after setting the func_name.
> But I still can't call funciton g by using f(), when I try to do
> this, error will occur:
> <code>
> >>> g.func_name="f"
> >>> print g
> <function f at 0x00B2CEB0>
> >>> f()
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
> NameError: name 'f' is not defined
> </code>
> Since the name of g is changed into f, why can't I call it by using
f()?
> Should I call it using f through other ways? Please tell me. Thanks~

Merely changing func_name to 'f' will not register 'f' in the module's
namespace. So calling f() will cause a NameError as there is no
function object bound to the name 'f' in the namespace. Instead,
if you say
f = g
then 'f' is bound in the namespace to the function object pointed to by
'g' and you can now make the call f().



From rkern at ucsd.edu  Sat May 28 10:51:06 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Sat, 28 May 2005 07:51:06 -0700
Subject: Software licenses and releasing Python programs for review
In-Reply-To: <1117245014.218831.317750@g14g2000cwa.googlegroups.com>
References: <1117245014.218831.317750@g14g2000cwa.googlegroups.com>
Message-ID: <d7a0cg$jpq$1@sea.gmane.org>

poisondart wrote:
> Hi,
> 
> I'm not sure if this is the right group to post this. If not, then I
> would appreciate if somebody could point me to the correct group.
> 
> This is my first time releasing software to the public and I'm wanting
> to release a Python program I wrote for review (and critique) and
> testing on other platforms, but also I would like to explore the
> different software licenses that are available (there seems to be
> many). Since the specification for the programs is knowledge-centric
> (related to linguistics), I need a group of people that are
> knowledgeable in this area. Is there a place where I can advertise to
> look for people who are knowledgeable in Python and linguistics?

The NLTK mailing list might be a good place.

http://nltk.sourceforge.net

> Ultimately I desire two things from the license (but not limited to):
> - being able to distribute it freely, anybody can modify it
> - nobody is allowed to make profit from my code (other than myself)

Well, this is vague. Do you want no one else to *distribute* your code 
or derivatives thereof for profit? or do you want no one else to be able 
to *use* the code for profit-making activities?

Either way, it's kind of rude and unproductive to ask people to spend 
their unpaid time to review, critique, and test your code when only you 
can make a profit from it. I highly recommend looking at the GPL. Many 
of the people whom you may want to not distribute your code for profit 
will probably be reluctant to use GPLed code. As a bonus, if they do, 
they will have to contribute their changes back to the community under 
the GPL, too, so you can incorporate them into your own code base.

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From elrei69 at yahoo.es  Tue May 24 11:06:18 2005
From: elrei69 at yahoo.es (Ximo)
Date: Tue, 24 May 2005 17:06:18 +0200
Subject: execution error 2
Message-ID: <3fgu75F7ofgtU1@individual.net>

>>    Ximo> My question is how can show the execution error whitout exit  of
>> the program, showing it in the error output as


>> Skip> You need to catch ZeroDivisionError.  Here's a trivial example:


>>    >>> try:
>>    ...   6/0
>>    ... except ZeroDivisionError:
>>    ...   print "whoops! divide by zero..."
>>    ...
>>    whoops! divide by zero...


 But I execute the operation in the else:

    try:
       except ZeroDivisionError:
       print "whoops! divide by zero..."
    else:
       execute( )

 The exeption is produced after.





From harlinseritt at yahoo.com  Mon May  2 07:03:47 2005
From: harlinseritt at yahoo.com (Harlin Seritt)
Date: 2 May 2005 04:03:47 -0700
Subject: Displaying formatted - data with TKinter
In-Reply-To: <1114999819.728730.54930@o13g2000cwo.googlegroups.com>
References: <1114999819.728730.54930@o13g2000cwo.googlegroups.com>
Message-ID: <1115031827.234787.103780@g14g2000cwa.googlegroups.com>

I've used multiple listboxes in the past. Also, you can build a widget
that contains multiple listboxes as well. As far as there being one
ready to go, I don't know of one.



From http  Mon May  9 15:45:48 2005
From: http (Paul Rubin)
Date: 09 May 2005 12:45:48 -0700
Subject: Encryption with Python?
References: <1115324411.952821.150780@o13g2000cwo.googlegroups.com>
	<001301c552db$dd19d3e0$0201a8c0@mcuf7> <d5i0as$ejd$1@sea.gmane.org>
	<009901c552fb$220132e0$0201a8c0@mcuf7> <d5ier2$hqa$1@sea.gmane.org>
	<mailman.213.1115652248.29826.python-list@python.org>
Message-ID: <7x8y2oyyhf.fsf@ruckus.brouhaha.com>

"Anthra Norell" <anthra.norell at tiscalinet.ch> writes:
> The non-randomness of the difference is evidence of having guessed the key,
> right? Why then do I need two samples? If I hack away at a single sample I
> get a probably more conspicuous non-randomness twice as fast.

No.  Let's say you encrypt two ascii strings with the same key.  The
high bit of each byte in the plaintext is zero.  Therefore if you xor
the two ciphertexts together, the high bit of each byte of the result
xor'd ciphertexts will be zero.  So just check for that and you've
immediately spotted the non-randomness.

> I don't doubt that, given a series (long enough), the postion can be
> derived. I doubt, though, that a series is knowable, if another, unknown,
> series has been added to it.

You have to assume that the attacker has access to known
plaintext-ciphertext pairs.  For example, you might not tell someone
the password you use now, but what about some old password that you
don't use any more?  If the attacker knows your old password (maybe
because your sysop set it to some default value and had you change it
on your first login), and has the encrypted version, there's a known
plaintext.

> I thought the problem was concealing passwords from ones kids or
> collaborators.

Encryption is supposed to conceal data from knowledgable attackers
willing to burn significant resources to get at the data.  That might
or might not describe your friends and collaborators.

> I believe that a randomly distributed series utterly obliterates any
> non-randomness or regularity of a second series, if the two are added. 

This is a meaningless statement since you don't give any definition of
"randomly distributed series".

> I don't know how to produce a formal proof. It is just a hunch. It's
> actually more than a hunch. It is a conviction. Not a certainty; a
> conviction. I'd be delighted to be proved wrong (or right).  

If the keystream really can't be distinguished from random, then correct,
though there's still issues with key management (you mustn't use the same
key twice) and authentication.

Generating keystreams that are indistinguishable from random is an
extremely tricky subject, there are books and papers written about it, etc.

> The fact may be significant that we module overflow back into the
> range.  So, if the distribution of my code is indeed random, 

Your code used the Python built-in PRNG algorithm which is designed to
make output with similar statistical properties as actual random numbers,
for the purpose of running stuff like simulations.  It makes no attempt
at all to be secure against attackers trying to figure out whether the
output is really random.


From timr at probo.com  Sat May 14 03:15:02 2005
From: timr at probo.com (Tim Roberts)
Date: Sat, 14 May 2005 00:15:02 -0700
Subject: reg mail sending without smtp module
References: <mailman.429.1115873514.29826.python-list@python.org>
Message-ID: <099b81p7aenkfpco748qsm1uktapdckcc0@4ax.com>

praba kar <prabapython at yahoo.co.in> wrote:
> 
>In Php we can build a Mail Message by
>Mail_mime class and send this message by
>Mail::Factory's class send Method. Here Php
>doesn't use any smtp modules.

Why do you think so?  I'll bet that it does.

Mail can only go out in a very small number of ways.  On a Unix system, you
can use SMTP, or you can call /usr/sbin/sendmail directly.  On Windows, you
can use SMTP, or you can use MAPI.

There is no "magic" sink into which you can pour e-mail.
-- 
- Tim Roberts, timr at probo.com
  Providenza & Boekelheide, Inc.


From slick_mick_00 at hotmail.com  Tue May 31 14:49:20 2005
From: slick_mick_00 at hotmail.com (Michael)
Date: Tue, 31 May 2005 18:49:20 +0000 (UTC)
Subject: working with pointers
References: <d7iapk$6ck$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
	<JJSdnXLcZdUsLQHfRVn-1w@comcast.com>
Message-ID: <d7ibjg$8en$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>

"Steven Bethard" <steven.bethard at gmail.com> wrote in message
news:JJSdnXLcZdUsLQHfRVn-1w at comcast.com...
> Michael wrote:
> > Do expicit pointers exist in python??
> >
> > if i do:
> >
> > a = [5,7]
> > b = a
> >
> > a.empty()
> >
> > b = ?
>
> This is what the interactive prompt is for.  Try it:
>
> py> a = [5,7]
> py> b = a
> py> a.empty()
> Traceback (most recent call last):
>    File "<interactive input>", line 1, in ?
> AttributeError: 'list' object has no attribute 'empty'
>
> Well, looks like you get an AttributeError.  Let's try a method that
> actually exists instead:
>
> py> a.pop()
> 7
> py> a
> [5]
> py> b
> [5]
>
> So, as you can see, since 'a' and 'b' are both names referring to the
> same object, when you modify the object referred to by 'a', you are also
> modifying the object referred to by 'b'.
>
> > how do i do explicit pointers??
>
> I don't know what you mean by "explicit pointers".  Care to elaborate?
> It also might help if you explained what it is you think you want
> "explicit pointers" to do.
>
> STeVe

sorry, I'm used to working in c++ :-p

if i do
a=2
b=a
b=0
then a is still 2!?

so when do = mean a reference to the same object and when does it mean make
a copy of the object??

regards

Mike




From fperez.net at gmail.com  Tue May 10 20:53:25 2005
From: fperez.net at gmail.com (Fernando Perez)
Date: Tue, 10 May 2005 18:53:25 -0600
Subject: Python Graphing Utilities.
References: <-dadnS0X7IVccR3fRVn-uQ@entouch.net>
	<797fe3d405051010392c00011f@mail.gmail.com>
Message-ID: <d5rkk1$ldu$1@sea.gmane.org>

Bill Mill wrote:

> On 5/10/05, Kenneth Miller <ken.miller at entouch.net> wrote:
>> Hello All,
>> 
>>     I am new to Python and i was wondering what graphing utlities would be
>> available to me. I have already tried BLT and after weeks of unsuccesful
>> installs i'd like to find something else. Anything someone would recommend?
> 
> matplotlib is awesome:
> 
> http://matplotlib.sourceforge.net/
> 
> and gnuplot.py is passable:
> 
> http://gnuplot-py.sourceforge.net/
> 
> (a better version of gnuplot.py is available with the excellent
> ipython interpreter at http://ipython.scipy.org/)

Just to clarify: with ipython, you still need the default gnuplot-py package,
it's just that ipython enhances it a bit.

And I'd also second the matplotlib suggestion, to which I've by now fully
switched after years of faithful gnuplot usage.  Matplotlib is very good, has
an active development community, and it is designed from the ground up not
only as a library for rendering plots to screen/disk, but also for embedding
into guis (with support for Tk, WX, GTK, QT and FLTK).  So it should satisfy
the OP's  needs well, and if he has any problems with it, feel free to stop by
the user list which is fairly active.

As a disclaimer, while I've added support in ipython for interactive matplotlib
usage with most backends (except FLTK), I'm not a full-time developer.  So I
feel it's OK to cheer JDH's and all the rest of the team's excellent work on
matplotlib.

Best,

f



From seadrifter at email.com  Wed May 11 14:44:53 2005
From: seadrifter at email.com (Espiritu Santo)
Date: Wed, 11 May 2005 18:44:53 +0000 (UTC)
Subject: Doctor Boudreaux at  Tulane
References: <1115824563.613661.169620@g47g2000cwa.googlegroups.com>
	<1115827184.537831.312210@g49g2000cwa.googlegroups.com>
Message-ID: <f64525164bfa394bd5e200a0cc8ec40c.113293@mygate.mailgate.org>

"hans" <anybutbush at hotmail.com> wrote in message
news:1115827184.537831.312210 at g49g2000cwa.googlegroups.com

Hey Doctor Boudreaux,

Laissez les Bon Temps Rouler!

Shall we send all these to Tulane education, Little Buddy?

doc




-- 
Posted via Mailgate.ORG Server - http://www.Mailgate.ORG


From fabienhenon_nospam_ at free.fr  Mon May  2 05:06:12 2005
From: fabienhenon_nospam_ at free.fr (fabien)
Date: Mon, 02 May 2005 11:06:12 +0200
Subject: gtk/qt scintilla help !
In-Reply-To: <MPG.1ce02888e179a84d98968f@news-server>
References: <4274cdc0$0$26837$626a14ce@news.free.fr>
	<MPG.1ce02888e179a84d98968f@news-server>
Message-ID: <4275ed95$0$9938$626a14ce@news.free.fr>

Neil Hodgson wrote:
> Fabien:
> 
> 
>>There is a lexPOV.cxx file in the package, but I can not find any POV 
>>keywords in any file ( there are about 150 POV keywords). Did i miss it, 
>>and if not, how do I create one and include it for the library building ?
> 
> 
>    The Scintilla web site, documentation and mailing list are:
> http://www.scintilla.org/
> http://scintilla.sourceforge.net/ScintillaDoc.html
> http://mailman.lyra.org/mailman/listinfo/scintilla-interest
> 
>    Keyword lists are often very large as it is frequently desired to 
> highlight all the identifiers in an API. The Win32 API is around 10 
> megabytes in SciTE .api format. 
> 
>    The SciTE editor is shipped with some keyword lists, including some 
> for POV in the pov.properties file.
Yes I saw that  file, but as far as I know, it is used by and only by 
SciTE. I thought at first that I could use it for pygtkScintilla.

> 
>    To set keywords, call SCI_SETKEYWORDS as described on the 
> documentation page.
That is going to be tough, I do not know anything about C. It is going 
to be easier if I could find a file with a syntax close to that of POV 
and replace of the keywords found in it with POV keywords ,and the compile.

> 
>    I do not personally use the Qt or PygtkScintilla wrappers for 
> Scintilla.

Thanks for the reply and the links

Fabien
> 
>    Neil


From rupole at hotmail.com  Thu May 19 16:19:21 2005
From: rupole at hotmail.com (Roger Upole)
Date: Thu, 19 May 2005 16:19:21 -0400
Subject: How to receive events (eg. user mouse clicks) from IE
References: <1116476411.853695.235670@g14g2000cwa.googlegroups.com>
	<428c3cbe$1_1@spool9-west.superfeed.net>
	<1116529345.146032.91880@f14g2000cwb.googlegroups.com>
Message-ID: <428cf5a9$1_1@spool9-west.superfeed.net>

Here's a few more lines that hook the document's onactivate event.

import win32com.client

ie_mod=win32com.client.gencache.EnsureModule('{EAB22AC0-30C1-11CF-A7EB-0000C05BAE0B}' 
,0, 1, 1)
doc_mod=win32com.client.gencache.EnsureModule('{3050F1C5-98B5-11CF-BB82-00AA00BDCE0B}' 
,0 ,4, 0)
class IE_Events(ie_mod.DWebBrowserEvents2):
    def OnNavigateComplete2(self, pDisp, URL):
        print 'OnNavigateComplete2:', URL

class Doc_Events(doc_mod.HTMLAnchorEvents):
    def Ononactivate(self):
        print 'onactivate', self.activeElement.outerHTML

ie=win32com.client.DispatchWithEvents('InternetExplorer.Application',IE_Events)
ie.Visible=1
ie.Navigate('http://www.google.com')

d=win32com.client.DispatchWithEvents(ie.Document, Doc_Events)

    Roger


<cal_2pac at yahoo.com> wrote in message 
news:1116529345.146032.91880 at f14g2000cwb.googlegroups.com...
> Hi
> Thanks for the response and for the code.
> However, I want to trap events like mouse click on the HTML document
> loaded by the web browser control. The code mentioned below provides
> events from the web browser control. I need to find out on which
> particular HTML tag did the user click for example.
> How do I find that out? There should be some way to refer to a document
> from a given web browser control and start receiving events from it
>
>
> Roger Upole wrote:
>> The two you'll need to run makepy for are Microsoft Internet Controls
> and
>> Microsoft HTML object Library.  If you run them manually, you should
> be
>> able to look at the generated code to get the guids.
>> Here's a minimal example:
>>
>> import win32com.client
>>
>>
> ie_mod=win32com.client.gencache.EnsureModule('{EAB22AC0-30C1-11CF-A7EB-0000C05BAE0B}',0,
>
>> 1, 1)
>> class IE_Events(ie_mod.DWebBrowserEvents2):
>>     def OnNavigateComplete2(self, pDisp, URL):
>>         print 'OnNavigateComplete2:', URL
>>
>>
> ie=win32com.client.DispatchWithEvents('InternetExplorer.Application',IE_Events)
>> ie.Visible=1
>> ie.Navigate('http://www.google.com')
>>
>>    hth
>>       Roger
>>
>>
>> <cal_2pac at yahoo.com> wrote in message
>> news:1116476411.853695.235670 at g14g2000cwa.googlegroups.com...
>> >I am trying to trap events from internet explorer eg. when user
> clicks
>> > on an html link - I need to get notified for that event.
>> >
>> > After looking through the newgroups / internet and reading through
>> > various sections in programming python on win32 - I understand that
>> > this can be done using DispatchWithEvents.
>> > I have also referred to discussions on comp.lang.python
>> >
> http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/a3c502d06412a5f8/0ee3083e71316da7?q=dispatchwithevents&rnum=43#0ee3083e71316da7
>> >
>> > and
>> >
>> >
> http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/1da0668794851296/5bcec1fda216c598?q=dispatchwithevents&rnum=19#5bcec1fda216c598
>> >
>> > So far - none of the newgroups postings report that IE events were
>> > trapped successfully (at least I could not find any). However,
> there is
>> > enough evidence that it can be done.
>> > My problems at the moment:
>> > a) The examples use early binding. However, I cannot get Python
> makepy
>> > to generate the code to force makepy process at run time - since
> COM
>> > makepy utility that I invoke from python win 32 does not have any
> entry
>> > for internet explorer.
>> > I tried to find the CLSID for IE
> 3050F613-98B5-11CF-BB82-00AA00BDCE0B
>> > but I get an exception
>> > b) Also one of the examples suggest that following code should work
>> >
>> >> mod = EnsureModule(...)
>> >
>> >> class MyEvents(mod.IDocumentEvents):
>> >>    # your methods here....
>> >
>> >> handler = MyEvents(ie.document)
>> >
>> >> # handler should start recieving events.
>> >
>> > however, what CLSID is to be used in EnsureModule... . I tried with
> a
>> > few but I always get the error 'NoneType' object has no attribute
>> > 'IDocumentEvents'
>> >
>> >
>> > An example that 'works' will be very useful
>> >
>>
>>
>>
>> ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet
> News==----
>> http://www.newsfeeds.com The #1 Newsgroup Service in the World!
> 120,000+ Newsgroups
>> ----= East and West-Coast Server Farms - Total Privacy via Encryption
> =----
> 




----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! >100,000 Newsgroups
---= East/West-Coast Server Farms - Total Privacy via Encryption =---


From lam at pcigeomatics.com  Mon May  2 09:55:00 2005
From: lam at pcigeomatics.com (Thierry Lam)
Date: Mon, 2 May 2005 09:55:00 -0400
Subject: Reading output from standard out
Message-ID: <BF0BED91AA17F448A3A927857E11FC6401706433@thor.pcigeomatics.com>

Let's say I have a python program which prints output to standard out,
let's call it HelloApp.  How do I capture these outputs from the python
GUI tkinter? For example, I want to call HelloApp from my GUI program
and I want to send the output live to a tkinter text area.

 

Thanks

Thierry

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From ivanlan at pauahtun.org  Sat May  7 21:41:07 2005
From: ivanlan at pauahtun.org (Ivan Van Laningham)
Date: Sat, 07 May 2005 19:41:07 -0600
Subject: Trouble saving unicode text to file
References: <1115500976.571232.76100@z14g2000cwz.googlegroups.com>
	<ameq71lt3ohe3o85fsh4m456qgrnj82dfk@4ax.com>
Message-ID: <427D6E33.D9D1E6B4@pauahtun.org>

Hi All--

John Machin wrote:
> 
> 
> The general rule in working with Unicode can be expressed something
> like "work in Unicode all the time i.e. decode legacy text as early as
> possible; encode into legacy text (if absolutely required) as late as
> possible (corollary: if forced to communicate with another
> Unicode-aware system over an 8-bit wide channel, encode as utf-8, not
> cp666)"
> 

+1 QOTW

And true, too.

<i-especially-like-the-cp666-part>-ly y'rs,
Ivan
----------------------------------------------
Ivan Van Laningham
God N Locomotive Works
http://www.andi-holmes.com/
http://www.foretec.com/python/workshops/1998-11/proceedings.html
Army Signal Corps:  Cu Chi, Class of '70
Author:  Teach Yourself Python in 24 Hours


From speno at isc.upenn.edu  Mon May  2 10:16:33 2005
From: speno at isc.upenn.edu (John P. Speno)
Date: Mon, 2 May 2005 14:16:33 +0000 (UTC)
Subject: BitKeeper for Python?
References: <IOade.1185051$Xk.343206@pd7tw3no>
	<slrnd7bsn8.pa3.nick@irishsea.home.craig-wood.com>
	<87ll6xaizm.fsf@cenderis.demon.co.uk>
	<du7zmvdu4iw.fsf@mozart.cc.tut.fi>
Message-ID: <d55co1$cv0m$1@netnews.upenn.edu>

In <du7zmvdu4iw.fsf at mozart.cc.tut.fi> Ville Vainio <ville at spammers.com> writes:
>>>>>> "Bruce" == Bruce Stephens <bruce+usenet at cenderis.demon.co.uk> writes:
>    Bruce> Nick Craig-Wood <nick at craig-wood.com> writes:
>    Bruce> [...]

>    >> You could try Mercurial
>    >> 
>    >> http://www.selenic.com/mercurial/

>    Bruce> Or Codeville, also written in Python.

>Or bazaar-ng, also written in python.

Too many choices here. Is anyone planning a PySCMOff blog yet <wink>?

Python, the language that makes reinventing the wheel a little too easy
sometimes.

I kid because I love.


From ken.miller at entouch.net  Tue May 10 21:46:27 2005
From: ken.miller at entouch.net (Kenneth Miller)
Date: Tue, 10 May 2005 20:46:27 -0500
Subject: Python Graphing Utilities.
References: <-dadnS0X7IVccR3fRVn-uQ@entouch.net><797fe3d405051010392c00011f@mail.gmail.com>
	<mailman.320.1115772826.29826.python-list@python.org>
Message-ID: <SMednSsssLdk_hzfRVn-qg@entouch.net>

Beleive i'm going to try out PyX.

"Fernando Perez" <fperez.net at gmail.com> wrote in message
news:mailman.320.1115772826.29826.python-list at python.org...
> Bill Mill wrote:
>
> > On 5/10/05, Kenneth Miller <ken.miller at entouch.net> wrote:
> >> Hello All,
> >>
> >>     I am new to Python and i was wondering what graphing utlities would
be
> >> available to me. I have already tried BLT and after weeks of
unsuccesful
> >> installs i'd like to find something else. Anything someone would
recommend?
> >
> > matplotlib is awesome:
> >
> > http://matplotlib.sourceforge.net/
> >
> > and gnuplot.py is passable:
> >
> > http://gnuplot-py.sourceforge.net/
> >
> > (a better version of gnuplot.py is available with the excellent
> > ipython interpreter at http://ipython.scipy.org/)
>
> Just to clarify: with ipython, you still need the default gnuplot-py
package,
> it's just that ipython enhances it a bit.
>
> And I'd also second the matplotlib suggestion, to which I've by now fully
> switched after years of faithful gnuplot usage.  Matplotlib is very good,
has
> an active development community, and it is designed from the ground up not
> only as a library for rendering plots to screen/disk, but also for
embedding
> into guis (with support for Tk, WX, GTK, QT and FLTK).  So it should
satisfy
> the OP's  needs well, and if he has any problems with it, feel free to
stop by
> the user list which is fairly active.
>
> As a disclaimer, while I've added support in ipython for interactive
matplotlib
> usage with most backends (except FLTK), I'm not a full-time developer.  So
I
> feel it's OK to cheer JDH's and all the rest of the team's excellent work
on
> matplotlib.
>
> Best,
>
> f
>




From jstroud at mbi.ucla.edu  Fri May 20 22:37:57 2005
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Fri, 20 May 2005 19:37:57 -0700
Subject: count files in a directory
In-Reply-To: <d6m5e1$cr7$1@solaris.cc.vt.edu>
References: <d6m5e1$cr7$1@solaris.cc.vt.edu>
Message-ID: <200505201937.57207.jstroud@mbi.ucla.edu>

On Friday 20 May 2005 07:12 pm, rbt wrote:
> I assume that there's a better way than this to count the files in a
> directory recursively. Is there???
>
> def count_em(valid_path):
>      x = 0
>      for root, dirs, files in os.walk(valid_path):
>          for f in files:
>              x = x+1
>      print "There are", x, "files in this directory."
>      return x
>
> rbt

def count_em(valid_path):
  root, dirs, files = os.walk(valid_path)
  return len(files)



-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From Pidaqing at mail.iame.cn  Fri May 13 04:06:16 2005
From: Pidaqing at mail.iame.cn (=??B?xqS088fs?=)
Date: Fri, 13 May 2005 16:06:16 +0800
Subject: OK
Message-ID: <20050514055943.2583E28868@mail.iame.cn>





From nospam at denbridgedigital.com  Wed May  4 13:10:52 2005
From: nospam at denbridgedigital.com (Jonathan Brady)
Date: Wed, 4 May 2005 18:10:52 +0100
Subject: zipimport
References: <fV6ee.1330776$35.49663947@news4.tin.it>
Message-ID: <d5avmq$m2a$1$8300dec7@news.demon.co.uk>


"Gabriele *Darkbard* Farina" <darkbard at extending-php.net> wrote in message 
news:fV6ee.1330776$35.49663947 at news4.tin.it...
> Hi,
>
> I have a zip file structured like this:
>
> mymodule.zip\
>   module1.py
>   submodule\
>    submodule1.py
>
> I tried to load submodule.submodule1 using this pice of code:
>
> import zipimport
>
> z = zipimport.zipimporter("mymodule.zip")
> z.load_module("submodule.submodule1")
>
> but it does not work (load_module raises an exception)
>
> why?

try z.load_module("submodule/submodule1") instead.

Or in otherwords replace the dot with a slash, now quoting from the docs 
"'fullname' must be the fully qualified (dotted) module name.".  The dotted 
part of that doesn't seem to be correct, at least with the version of python 
(2.3.4) I'm running.

Anyway personally I find:

import sys
sys.path.insert(0, 'mymodule.zip')
import submodule.submodule1

a much cleaner way of thinking about this.

-- 
Jonathan 




From steven.bethard at gmail.com  Mon May  9 01:19:34 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Sun, 08 May 2005 23:19:34 -0600
Subject: How to implement multiple constructors
In-Reply-To: <mailman.172.1115591323.29826.python-list@python.org>
References: <1115588999.677872.174250@z14g2000cwz.googlegroups.com>
	<mailman.172.1115591323.29826.python-list@python.org>
Message-ID: <nb6dndbLp_15b-PfRVn-rg@comcast.com>

James Stroud wrote:
> If you know what type of object "object" is
> (BTW, a keyword in 2.3 and later, I believe)

Not a keyword, but a builtin as of 2.2.

STeVe


From just at xs4all.nl  Wed May 25 12:38:14 2005
From: just at xs4all.nl (Just)
Date: Wed, 25 May 2005 18:38:14 +0200
Subject: namespaces in eval(): spot error in 3 line program
References: <1117035976.997084.305310@g47g2000cwa.googlegroups.com>
Message-ID: <just-942937.18381425052005@news1.news.xs4all.nl>

In article <1117035976.997084.305310 at g47g2000cwa.googlegroups.com>,
 "pasa" <harri.pasanen at trema.com> wrote:

> I'm an old time python user, but just got bitten by namespaces in eval.
> If this is an old discussion somewhere, feel free to point me there.
> 
> Based on the documentation, I would have expected the following to
> work:
> 
> def foo(k): print k; print a
> 
> ns = {'a':1, 'foo': foo}
> eval('foo(2)', ns)
> 
> But it does not, complete session:
> 
> [harri at labsdevgrid1 ~]$ python
> Python 2.4 (#2, Feb 13 2005, 22:08:03)
> [GCC 3.4.3 (Mandrakelinux 10.1 3.4.3-3mdk)] on linux2
> Type "help", "copyright", "credits" or "license" for more information.
> >>> def foo(k): print k; print a
> ...
> >>> ns = {'a':1, 'foo': foo}
> >>> eval('foo(2)', ns)
> 2
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
>   File "<string>", line 0, in ?
>   File "<stdin>", line 1, in foo
> NameError: global name 'a' is not defined
> >>>
> 
> huh?  I'd almost be tempted to call this a bug?
> 
> Playing with locals() and globals() I see that this one works,
> which I would not have expected to work:
> 
> def foo(k): print k; print ns['a']
> 
> ns = {'a':1, 'foo': foo}
> eval('foo(2)', ns)
> 
> Prints out
> 2
> 1
> 
> Do functions carry their own pointer to global namespace,
> which gets defined at function compile time, or what is
> happening here?

Function definition time. Your code is more or less equivalent to:

  # A.py:
  def foo(k): print k; print a

  # B.py:
  from A import foo
  a = 1
  foo()

That will fail with a NameError just the same.

Just


From apardon at forel.vub.ac.be  Tue May 17 06:11:08 2005
From: apardon at forel.vub.ac.be (Antoon Pardon)
Date: 17 May 2005 10:11:08 GMT
Subject: Newbie : checking semantics
References: <1115503520.392357.230620@f14g2000cwb.googlegroups.com>
	<87d5rrsh7h.fsf@snobis.de>
	<pan.2005.05.16.13.58.07.671337@dalkescientific.com>
	<d6a997$eh4$1@solaris.cc.vt.edu> <87br7bunsk.fsf@snobis.de>
	<42891732.102919961@news.oz.net>
Message-ID: <slrnd8jgpr.jue.apardon@rcpc42.vub.ac.be>

Op 2005-05-16, Bengt Richter schreef <bokr at oz.net>:
> On Mon, 16 May 2005 18:40:43 +0200, Stefan Nobis <snobis at gmx.de> wrote:
>
>>rbt <rbt at athop1.ath.vt.edu> writes:
>>
>>> True beginners (no programming experience whatsoever) don't have
>>> to deal with unlearning stuff such as the bracket plague.
>>
>>That's true. But they also not very used to give nothing (->
>>whitespace) a meaning. I teached quite some beginners and most of
>>them had problems to get the indentation right.
>>
>>At least in the very beginning IMHO it would be useful to
>>explicitly end a block with some kind of an end statement.
>>
>>Meaningful whitespache is not a big problem (as many people seems
>>to think) but it's also not very obvious and sometimes it causes
>>at least a little bit trouble.
>>
> Training wheels do no belong as a permanent part of a bicycle, IMO.

But what is a training wheel depends on your point of view.

IMO the required indentation is more like permanent training wheels
than end block-markers would be. A structure in general has a begin
marker and an end marker. Even python has them in some cases like
lists and tuples. 

-- 
Antoon Pardon


From dave.opstad at monotypeimaging.com  Wed May 25 11:42:48 2005
From: dave.opstad at monotypeimaging.com (Dave Opstad)
Date: Wed, 25 May 2005 08:42:48 -0700
Subject: Unusable outer edge of Tkinter canvases?
Message-ID: <dave.opstad-71E7F6.08424525052005@news.isp.giganews.com>

When drawing rectangles in Tkinter canvases I've noticed the outer edges 
(say 3-5 pixels) don't always draw. For instance, try typing this in an 
interactive session (Terminal in OS X or Command Prompt in Windows XP):

>>> import Tkinter as T
>>> root = T.Tk()
>>> f = T.Frame(root)
>>> f.grid()
>>> c = T.Canvas(f, width = 300, height = 300)
>>> c.grid()
>>> c.create_rectangle(1, 1, 299, 299)
>>> c.create_rectangle(3, 3, 297, 297)
>>> c.create_rectangle(5, 5, 295, 295)

On the Mac, the first two rectangles only partly show up (two sides for 
the first one and three for the second), while the third one draws 
completely. On Windows the first rectangle appears partially and the 
final two appear completely.

Is there some simple setting I'm missing? I've tried gridding the canvas 
with padx, pady and also ipadx, ipady values but nothing seems to help 
make the whole rectangle (1, 1, 299, 299) appear.

I'm using Python 2.4.1 and TclTkAqua 8.4.9 on Mac OS X 10.3.7, and 
Python 2.3.4 on Windows XP (which comes with a Tcl/Tk whose version I 
don't know).

Thanks for any insights,
Dave


From dcrespo at gmail.com  Tue May  3 10:44:26 2005
From: dcrespo at gmail.com (dcrespo)
Date: 3 May 2005 07:44:26 -0700
Subject: Which IDE is recommended?
In-Reply-To: <mailman.67.1115087196.6583.python-list@python.org>
References: <426f90ac$1_2@rain.i-cable.com>
	<9f7v619jhigbtoksslnr88f4idoc6ejvu3@4ax.com>
	<1115039282.069052.287920@o13g2000cwo.googlegroups.com>
	<mailman.67.1115087196.6583.python-list@python.org>
Message-ID: <1115131466.210482.183180@f14g2000cwb.googlegroups.com>

Try one of these:
- Hit F8
- Menu View/Toggle Source Browser

Daniel



From hugh.macdonald at gmail.com  Tue May 24 07:10:53 2005
From: hugh.macdonald at gmail.com (Hugh Macdonald)
Date: 24 May 2005 04:10:53 -0700
Subject: Hacking the scope to pieces
Message-ID: <1116933053.924055.50250@g14g2000cwa.googlegroups.com>

We're starting to version a number of our python modules here, and I've
written a small function that assists with loading the versioned
modules...

A module would be called something like: myModule_1_0.py

In anything that uses it, though, we want to be able to refer to it
simply as 'myModule', with an environment variable ("MYMODULE_VERSION"
- set to "1.0") that defines the version.

I've written a module called 'moduleLoader' with the follwing function
in:

def loadModule(module, version, v = globals()):
  import compiler
  loadStr = "import %s_%s as %s" % (module, version.replace(".", "_"),
module)
  eval(compiler.compile(loadStr, "/tmp/%s_%s_errors.txt" % (module,
version.replace(".", "_")), "single"))
  v[module] = vars()[module]


The ideal situation with this would be to be able, in whatever script,
to have:

import moduleLoader
moduleLoader.loadModule("myModule", os.getenv("MODULE_VERSION"))


However, this doesn't work. The two options that do work are:

import moduleLoader
moduleLoader.loadModule("myModule", os.getenv("MODULE_VERSION"),
globals())


import moduleLoader
moduleLoader.loadModule("myModule", os.getenv("MODULE_VERSION"))
from moduleLoader import myModule


What I'm after is a way of moduleLoader.loadModule working back up the
scope and placing the imported module in the main global scope. Any
idea how to do this?


--
Hugh Macdonald



From mf1987 at arcor.de  Mon May 23 11:14:29 2005
From: mf1987 at arcor.de (mmf)
Date: 23 May 2005 08:14:29 -0700
Subject: No encodings after freezing
Message-ID: <1116861269.528674.295440@f14g2000cwb.googlegroups.com>

Hi.

I have the following script (for example):

#!/usr/bin/python
text = 'Hallo'
text_new = text.encode('utf_8')
print text_new

The I tried to "freeze" this script with cx_freeze 3.0.1 (command
./FreezePython example.py).
Everything worked finde, a binary was created correctly.

But everytime I run this binary the utf-8 encoding cannot be found.
(Also any other encoding like iso8859_15 cannot be found...)

What am I doing wrong?
Thank.

Best regards,
Markus



From jmgouzit at gmail.com  Tue May 24 06:39:21 2005
From: jmgouzit at gmail.com (jm)
Date: 24 May 2005 03:39:21 -0700
Subject: Access lotus notes using Python
References: <lWike.155$NV3.3324@news1.nokia.com>
	<UEjke.447$2u1.383@newssvr19.news.prodigy.com>
	<prk9m2-2gi.ln1@nb2.stroeder.com>
	<Vdrke.1084$uu.291@newssvr33.news.prodigy.com>
	<ALAke.264$_k2.4238@news2.nokia.com>
	<1116921752.615735.187040@g47g2000cwa.googlegroups.com>
	<s%Bke.273$_k2.4733@news2.nokia.com>
Message-ID: <1116931161.490319.203520@g43g2000cwa.googlegroups.com>

Lotus Domino Designer 6.5.1 Help (instaled by notesdesigner)

see section LotusScript/COM/OLE Classes  & LotusScript Classes A-Z



From mfranklin1 at gatwick.westerngeco.slb.com  Tue May  3 05:45:27 2005
From: mfranklin1 at gatwick.westerngeco.slb.com (Martin Franklin)
Date: Tue, 03 May 2005 10:45:27 +0100
Subject: Tkinter weirdness item count
In-Reply-To: <42728470.2050103@anvilcom.com>
References: <42728470.2050103@anvilcom.com>
Message-ID: <d57grt$ono$1@sea.gmane.org>

phil wrote:
> Using Tkinter Canvas to teach High School Geometry
> with A LOT of success.
> 
> My drawing gets very slow after a lot of actions.
> 
> For instance I have created code to rotate a set of objects
> about a rotation point.
> rotate 360 degrees starts to get slow
> after 720 degrees its crawling.
> 
> I checked the item list with with find_all: IT GROWS!
> 
> OK, I create 3 lines using a line Class I created.
> When I rotate these 3 lines thru 360 degrees it creates
> 360 lines times 3. But each new instance of line REPLACES
> the old instance.  The line class has a destructor to delete
> the drawn object.
> 
> class line:
>     count = 0
>     def __init__(s,glob,argl,color=''):
>         line.count = line.count + 1
>             ##
>             ## buncha code here
>             ##
>         s.obj = glob.can.create_line(x0,y0,x1,y1,
>                     width=glob.width,fill=s.color)
>     def __del__(s):
>         line.count = line.count - 1
>     
>             ## delete the line object if the
>         ## class instance is deleted
>             s.glob.can.delete(s.obj)
> 
> 
> After the rotation I check line.count and it is 3
> But find_all returns a tuple ofover 1000 items.
> The drawn objects are not being deleted.
> Which is kinda weird because the rotation works.
> That is they appear to be deleted.
> 
> Is find_all() fooling me?
> Is this the reason drawing slows down? Is it refreshing
> invisible objects?
> 
> This slowing down also occurs when I draw a lot of objects.
> Lets say I draw a sine wave, say 1000 individual points.
> If I draw 4 or 5 sine waves it gets really slow.
> 
> I should mention I call update() after each drawing action.
> This is necessary for the students to watch the progress.
> I might be drawing objects in a lengthy loop and without
> update() they only appear at the end of the loop.
> 
> Thanks for any help.
> 
> -- Confused
> 
> 


Phil,

I seem to remember a thread a while ago about a 'bug' with the Tk Canvas
widget keeping a reference to objects that had been deleted...

Have you thought about using the 'move' method to move your lines?  I 
think this will result in less supprises...


pydoc Tkinter.Canvas

<snip>

  |  move(self, *args)
  |      Move an item TAGORID given in ARGS.
  |

<snip>

You could even make it a method of your line class

Martin













From ng at jpmcgrath.net  Wed May 25 05:49:05 2005
From: ng at jpmcgrath.net (John McGrath)
Date: Wed, 25 May 2005 09:49:05 GMT
Subject: What are OOP's Jargons and Complexities?
References: <1116843761.619249.144790@g47g2000cwa.googlegroups.com>
	<bAske.14563$yx.14338@fe08.lga> <3584469.Aerji1NdQr@yahoo.com>
Message-ID: <xn0e2ntb7j0p7lg00b@news.verizon.net>

On 5/23/2005 at 7:54:24 PM, alex goldman wrote:

> I'm just curious, what do you mean by strong typing, and which strongly
> typed languages do you know?

"Strongly typed" is not a very useful term, unless your intent is to
generate confusion or start an argument.  Unfortunately, there is no
consensus as to what the term means.

-- 
Regards,

John McGrath


From heiko.wundram at ceosg.de  Wed May  4 05:56:36 2005
From: heiko.wundram at ceosg.de (Heiko Wundram)
Date: Wed, 4 May 2005 11:56:36 +0200
Subject: How to write this regular expression?
In-Reply-To: <311b5ce105050402343dab03bf@mail.gmail.com>
References: <mailman.139.1115189526.6583.python-list@python.org>
	<1115195508.025605.53690@o13g2000cwo.googlegroups.com>
	<311b5ce105050402343dab03bf@mail.gmail.com>
Message-ID: <200505041156.37283.heiko.wundram@ceosg.de>

On Wednesday 04 May 2005 11:34, could ildg wrote:
> Does it matter whether it is a homework?

Yes, it does matter. We're not your CS-class homework monkeys... :-) We're a 
forum of Python programmers who aid each other at thinking about solutions, 
we don't present solutions (normally), for a beautiful example of this, see 
the thread about finding similarities between two wave files...

But, anyway, as an additional hint: the stuff you need to do _can_ be solved 
by an RE (the language you're matching is actually regular if you impose 
several restrictions), but I'd rather not do it that way. Programming a small 
function which splits the string and then does the appropriate checks (by 
using int) should be much easier and faster.

And in case you really need an RE, watch this monster (to match a single term 
having numerical value >= 40)...

0*(([1-9][0-9]{2,})|([4-9][0-9]))

Matching numbers >= 31 isn't hard too, I leave this as an exercise to the 
reader... :-) But beware, I'd guess this regex performs rather poorly with 
respect to backtracking on erraneous input such as 
"00000000000000000000000030"...

--- Heiko.


From fredrik at pythonware.com  Wed May 25 03:23:37 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Wed, 25 May 2005 09:23:37 +0200
Subject: Has ComboBox ctrl in Tkinter?
References: <d70vik$snj$1@sea.gmane.org>
Message-ID: <d7192d$in4$1@sea.gmane.org>

"????????" <dreamingpython at 163.com> wrote:

>i have not find the ComboBox in Tkinter,has it? where to get the doc about
> how to use combobox ctrl?

the Tix add-on contains a combobox:

    http://docs.python.org/lib/node727.html

see

    http://docs.python.org/lib/node725.html

for some information on how to check for a working Tix install.

if you cannot get Tix to work (or don't want to use it), there's a combobox in
the bwidgets package as well:

    http://tkinter.unpythonic.net/bwidget/

</F> 





From sakesun at boonthavorn.com  Thu May 19 05:25:02 2005
From: sakesun at boonthavorn.com (Sakesun Roykiattisak)
Date: Thu, 19 May 2005 16:25:02 +0700
Subject: datetime
In-Reply-To: <47736$428c56e3$9117fe9b$26924@news2.tudelft.nl>
References: <47736$428c56e3$9117fe9b$26924@news2.tudelft.nl>
Message-ID: <428C5B6E.6080502@boonthavorn.com>


>
>Why doesn't work the next statments?
>  
>

You talk like Yoda..

>import datetime
>
>today = datetime.date.today()
>
>and I get the next error:
>
>today = datetime.date.today()
>Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
>AttributeError: time
>
>I can't understand it!
>  
>
Understand it, I cannot too.
Work fine, on my machine, the statements.


From bogus@does.not.exist.com  Fri May 13 10:25:01 2005
From: bogus@does.not.exist.com ()
Date: Fri, 13 May 2005 14:25:01 -0000
Subject: No subject
Message-ID: <mailman.30.1572216225.3356.python-list@python.org>

#! rnews 2528
Newsgroups: comp.lang.python
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From: Harry George <harry.g.george at boeing.com>
Subject: Re: String formatting strangeness
X-Nntp-Posting-Host: cola2.ca.boeing.com
Content-Type: text/plain; charset=us-ascii
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References: <1115990147.880532.61730 at o13g2000cwo.googlegroups.com>
Mime-Version: 1.0
Date: Fri, 13 May 2005 14:03:03 GMT
Xref: news.xs4all.nl comp.lang.python:377190

dark.ryder at gmail.com writes:

> I must be doing something wrong, but for the life of me, I can't figure
> out what.  Here's the code snippet which is giving me grief:
> 
> print type(number), type(name), type(seconds // 60), type(seconds % 60)
> print "\t\t\t<section number=\"%i\" title=\"%s\" length=\"%i:%i\"/>\n"
> % [number, name, seconds // 60, seconds % 60]
> 
> (These are lines 49 and 50 of the script; I can post the whole thing if
> someone wants, but I think this is enough to see why it's driving me
> nuts.)
> 
> And the output:
> 
> <type 'int'> <type 'str'> <type 'int'> <type 'int'>
> Traceback (most recent call last):
>   File "X:\Music (FLAC)\Post-process new rips.py", line 50, in ?
>     print "\t\t\t<section number=\"%i\" title=\"%s\"
> length=\"%i:%i\"/>\n" % [number, name, seconds // 60, seconds % 60]
> TypeError: int argument required
> 
> Wait, what?  The first line clearly identifies that the the first,
> third, and fourth elements are all integers, yet the error says that
> *lack* of integers is the problem.  If I change all "%i"s to "%d", I
> get the same problem, and changing to "%s" (hey, it was worth a shot)
> gives "TypeError: not enough arguments for format string" instead.
> Huh?  I see four placeholders and a four-element tuple.
> 
> Can anyone enlighten me here?
> 

I notice you used a list instead of a tuple.   
Changing to a tuple gives the desired output:

number=1
name="myname"
seconds=250
print "\t\t\t<section number=\"%i\" title=\"%s\" length=\"%i:%i\"/>\n" \
    % (number, name, seconds // 60, seconds % 60)
			
<section number="1" title="myname" length="4:10"/>

I have no idea why a list has that effect.

PS:  When writing XML and HTML, I use single quotes, so I don't have to 
escape double quotes:
print '\t\t\t<section number="%i" title="%s" length="%i:%i"/>\n' \
    % (number, name, seconds // 60, seconds % 60)


-- 
harry.g.george at boeing.com
6-6M21 BCA CompArch Design Engineering
Phone: (425) 294-4718


From rupole at hotmail.com  Fri May 13 10:20:55 2005
From: rupole at hotmail.com (Roger Upole)
Date: Fri, 13 May 2005 10:20:55 -0400
Subject: Launch file in Notepad
References: <42835db6$0$1334$5fc3050@dreader2.news.tiscali.nl>
	<mailman.462.1115906101.29826.python-list@python.org>
	<1186phdog83fmf6@corp.supernews.com>
	<42836e72.1345761282@news.oz.net>
	<1186tsftfofdsa1@corp.supernews.com>
	<n2b881pvh4d0471gc549dbnleb4qpm4q93@4ax.com>
Message-ID: <4284b8a2$1_1@spool9-west.superfeed.net>


"Dennis Lee Bieber" <wlfraed at ix.netcom.com> wrote in message 
news:n2b881pvh4d0471gc549dbnleb4qpm4q93 at 4ax.com...
> On Thu, 12 May 2005 15:34:39 -0000, Grant Edwards <grante at visi.com>
> declaimed the following in comp.lang.python:
>
>
>> I think the use of forward slashes for command line switches
>> was adopted by CP/M from DEC's OSes (e.g. RSX-11).  CP/M didn't
>> have directories in the beginning, so nobody worried about what
>> to use for path separators (DEC used colons, IIRC).  DOS was a
>
> I can't speak for the various PDP-11 family, but VMS syntax was:
>
> hardware:[toplevel.nextlevel.ad.infinitum]filename.ext;version
>

And in a clustered VMS environment, there's also
nodename::hardware:[toplevel.nextlevel.ad.infinitum]filename.ext;version
(somewhat analogous to a UNC path)

       Roger

-- 
This signature was intentionally left blank.
    (except it's not, wtf ??????)





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From jstroud at mbi.ucla.edu  Wed May  4 14:23:42 2005
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Wed, 4 May 2005 11:23:42 -0700
Subject: How to write this regular expression?
In-Reply-To: <311b5ce1050503235270aa2691@mail.gmail.com>
References: <311b5ce1050503235270aa2691@mail.gmail.com>
Message-ID: <200505041123.42574.jstroud@mbi.ucla.edu>

Being one who types first and thinks later, I have to give this correction:

>>> r = re.compile(r"^_((\d)|([1-2]\d)|[3][0-1])(_(([4-9]\d+)|([3][1-9])|([1-9](\d){2,}))){,2}$")
>>> test(r)
_5 <type '_sre.SRE_Match'>
_10 <type '_sre.SRE_Match'>
_31 <type '_sre.SRE_Match'>
_1_50 <type '_sre.SRE_Match'>
_21_50_100 <type '_sre.SRE_Match'>
_500 <type 'NoneType'>
_21_10 <type 'NoneType'>
_21_50_40 <type '_sre.SRE_Match'>
_21_50_400 <type '_sre.SRE_Match'>
_21_50_1000 <type '_sre.SRE_Match'>
_5_40_100_50 <type 'NoneType'>
_3_5 <type 'NoneType'>
_43 <type 'NoneType'>
_5_43_69_98 <type 'NoneType'>


James

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From flyaflya at gmail.com  Fri May  6 21:28:24 2005
From: flyaflya at gmail.com (flyaflya)
Date: Sat, 07 May 2005 09:28:24 +0800
Subject: how  to make  a LAN game using python?
Message-ID: <d5h5jv$hnd$1@news.yaako.com>

I want make a desktop game suports LAN connect, but pygame has nothing 
about network.How to let pygame suport LAN connect? have you some 
examples or articles about LAN connect?


From tziade at nuxeo.com  Thu May 19 09:55:55 2005
From: tziade at nuxeo.com (=?ISO-8859-1?Q?Tarek_Ziad=E9?=)
Date: Thu, 19 May 2005 15:55:55 +0200
Subject: ssl issues with socket timeout
Message-ID: <428C9AEB.1080601@nuxeo.com>

Hello,

anyone knows a way to deal with this problem ?

http://sourceforge.net/tracker/index.php?func=detail&aid=1153016&group_id=5470&atid=105470


This bug has been fixed in 2.3 but there is a regression in 2.4

Tarek

-- 
Tarek ZIADE, Nuxeo SARL: Zope Service Provider.
Mail: tz at nuxeo.com - Tel: +33 (0)6 30 37 02 63
Nuxeo Collaborative Portal Server: http://www.nuxeo.com/cps
Gestion de contenu web / portail collaboratif / groupware / open source



From here at there.net  Tue May 24 08:07:53 2005
From: here at there.net (Drazen Gemic)
Date: Tue, 24 May 2005 14:07:53 +0200
Subject: Python & DOM
References: <pan.2005.05.23.22.13.58.420581@there.net>
	<1116913028.977768.110280@o13g2000cwo.googlegroups.com>
Message-ID: <pan.2005.05.24.12.07.52.555392@there.net>

On Mon, 23 May 2005 22:37:09 -0700, simon.dahlbacka at gmail.com wrote:

> textNode = yourDocumentElement.createTextNode("the content")
> yourElement.appendChild(textNode)
>
Thanks, it works, but 'yourDocumentElement' needs to be of type
'document'. The name leads to conclusion that it needs to be
a root element of the document.

DG




From skip at pobox.com  Mon May 16 13:49:24 2005
From: skip at pobox.com (Skip Montanaro)
Date: Mon, 16 May 2005 12:49:24 -0500
Subject: optparse global
In-Reply-To: <1116264761.204065.15980@g14g2000cwa.googlegroups.com>
References: <1116264761.204065.15980@g14g2000cwa.googlegroups.com>
Message-ID: <17032.56612.467517.478617@montanaro.dyndns.org>


    Ashton> How do i make an option passed through command line, using
    Ashton> optparse global. I need to import this value in another file.

Place the parser's output at the module scope.

    global options
    parser = OptionParser()
    parser.add_option("-p", "--port", dest="port", default=5007,
                      type="int",
                      help="port to connect to for remote interpreter")
    ...
    options, args = parser.parse_args()

The user of your module can then execute

    from othermodule import options
    print options.port

Skip


From me at privacy.net  Wed May 25 23:25:52 2005
From: me at privacy.net (Dan Sommers)
Date: 25 May 2005 23:25:52 -0400
Subject: Q: "...Learning with Python" ...a property that addition and
	multiplication have...
References: <1117067025.233387.323910@z14g2000cwz.googlegroups.com>
Message-ID: <m2is16r7lr.fsf@unique.fully.qualified.domain.name.yeah.right>

On 25 May 2005 17:23:45 -0700,
jeffbernstein at yahoo.com wrote:

> I'm reading "How to think like a computer scientist: Learning with
> Python" and there's a question regarding string operations. The
> question is, "Can you think of a property that addition and
> multiplication have that string concatenation and repetition do not?"

> I thought it was the commutative property but "<string>"*3 is
> equivalent to 3*"<string>". Any ideas?

Thinking like an old embedded systems programmer, for many types of
numbers (ints and floats, but not longs), multiplication and addition
are constant time, constant space operations.  String concatenation and
repetition are not.

As already mentioned, there are no inverses.  Similarly, there aren't
even inverse operations (e.g., it makes little sense to divide a string
by a number, let alone a number by a string).

For floating point numbers (and integers that can overflow),
multiplication and addition are not necessarily exact.  Unless your
strings get too big for the memory manager, concatenation and
replication are exact.

And now that I reread the question, "a property that addition and
multiplication have" is "the distributive property," but the
distributive property of multiplcation over addition does not translate
to a distributive property of repetition over concatenation:

    2 * ( 3 + 4 ) == 14
    2 * 3 + 2 * 4 == 14

but

    2 * ( "ABC" + "DEFG" ) == "ABCDEFGABCDEFG"
    2 * "ABC" + 2 * "DEFG" == "ABCABCDEFGDEFG"

Regards,
Dan

-- 
Dan Sommers
<http://www.tombstonezero.net/dan/>


From eventhelix at gmail.com  Fri May 27 06:40:53 2005
From: eventhelix at gmail.com (EventHelix.com)
Date: 27 May 2005 03:40:53 -0700
Subject: Intellisense and the psychology of typing
In-Reply-To: <1117125072.825389.74190@g47g2000cwa.googlegroups.com>
References: <1117125072.825389.74190@g47g2000cwa.googlegroups.com>
Message-ID: <1117190452.743357.163500@g14g2000cwa.googlegroups.com>

Intellisense does improve programmer productivity as
you do not have to keep opening header files to refer
to the interfaces. In VC++ the intellisense display
also shows the function header comment, so you have
full access to the information about the interface.

Deepa
--
EventStudio 2.5 - http://www.EventHelix.com/EventStudio
Model in Plain Text; Generate Sequence Diagrams in PDF/Word



From superprad at gmail.com  Fri May 13 13:04:35 2005
From: superprad at gmail.com (superprad at gmail.com)
Date: 13 May 2005 10:04:35 -0700
Subject: create words of various lengths
In-Reply-To: <mailman.41.1116003275.29328.python-list@python.org>
References: <1116002403.374232.210220@g49g2000cwa.googlegroups.com>
	<mailman.41.1116003275.29328.python-list@python.org>
Message-ID: <1116003875.263029.166190@z14g2000cwz.googlegroups.com>

Hi Robert,
At first I thought it would be an interesting thing to have a little
swift module to create a database of all words in the dictionary.But
then I thought y  just the words in the dictionary? y not all possible
words like 'and' and 'adn'. Just was inspired with the little idea of
if its an 'and' or 'adn' when u read it in a combination of other words
you read it as 'and' itself.

"nohting spceific wsa jsut plyaing around wtih ideas "



From python at rcn.com  Sun May 29 23:16:59 2005
From: python at rcn.com (Raymond Hettinger)
Date: 29 May 2005 20:16:59 -0700
Subject: finding indices in a sequence of parentheses
References: <u_KdneJ4tt9QuwffRVn-tg@comcast.com>
Message-ID: <1117423019.327925.268370@g49g2000cwa.googlegroups.com>

[Steven Bethard]
>> I have a list of strings that looks something like:
>> lst = ['0', '0', '(*)', 'O', '(*', '*', '(*', '*))', '((*', '*)', '*)']
 . . .
>> I want the indices:
>> (2, 2), (4, 7), (6, 7), (8, 9) and (8, 10)



opener_stack = []
for i, elem in enumerate(lst):
    for c in elem:
        if c == '(':
            opener_stack.append(i)
        elif c == ')':
            print opener_stack.pop(), i


To see something like this in production code, look at
Tools/scripts/texcheck.py



Raymond Hettinger



From jabel at plus.net  Tue May 10 05:47:02 2005
From: jabel at plus.net (John Abel)
Date: Tue, 10 May 2005 10:47:02 +0100
Subject: A Module on Time & Date
In-Reply-To: <20050510093620.35902.qmail@web61108.mail.yahoo.com>
References: <20050510093620.35902.qmail@web61108.mail.yahoo.com>
Message-ID: <42808316.9040703@plus.net>

Sara Khalatbari wrote:

>Is there a Module in Python that gives you the time &
>date of today???
>
>
>
>		
>__________________________________ 
>Do you Yahoo!? 
>Make Yahoo! your home page 
>http://www.yahoo.com/r/hs
>  
>
time - http://docs.python.org/lib/module-time.html
datetime - http://docs.python.org/lib/module-datetime.html

J


From tdelaney at avaya.com  Wed May 11 17:08:44 2005
From: tdelaney at avaya.com (Delaney, Timothy C (Timothy))
Date: Thu, 12 May 2005 07:08:44 +1000
Subject: Need a little parse help
Message-ID: <338366A6D2E2CA4C9DAEAE652E12A1DE72127F@au3010avexu1.global.avaya.com>

Fredrik Lundh wrote:

> that's probably because finalizers *are* called when Python exits.

D'oh! Old semantics? I'm sure I remember this used to not work at some
point, and not just in Jython.

My apologies to anyone who I led astray. Still ... better to be too
careful ;) I've been trying to find the declared semantics (without
looking at the source for now) but it's proving elusive ...

Tim Delaney


From exogen at gmail.com  Sat May 14 23:06:32 2005
From: exogen at gmail.com (Brian Beck)
Date: Sat, 14 May 2005 23:06:32 -0400
Subject: converting a set into a sorted list
In-Reply-To: <mailman.4.1116124266.15315.python-list@python.org>
References: <1116120701.520116.315230@f14g2000cwb.googlegroups.com>
	<mailman.4.1116124266.15315.python-list@python.org>
Message-ID: <d66eaq$mbj$1@eeyore.INS.cwru.edu>

Robert Kern wrote:
> MackS wrote:
> 
>> Dear all,
>>
>> I've got several large sets in my program. After performing several
>> operations on these I wish to present one set to the user [as a list]
>> sorted according to a certain criterion. Is there any direct way to do
>> so? Or must I
>>
>> list = []
>>
>> for item in set1:
>>    list.append(item)
>>
>> list.sort(....)

So, for this example, just do:

sorted(set1)


-- 
Brian Beck
Adventurer of the First Order


From danricofer at gmail.com  Wed May 11 19:23:57 2005
From: danricofer at gmail.com (danricofer at gmail.com)
Date: 11 May 2005 16:23:57 -0700
Subject: unstatisfied symbols building Python 2.4.1 on HP-UX 10.20
In-Reply-To: <mailman.1850.1113409779.1799.python-list@python.org>
References: <mailman.1850.1113409779.1799.python-list@python.org>
Message-ID: <1115853837.384056.158940@g43g2000cwa.googlegroups.com>


Scott Leerssen wrote:
> I'm trying to build Python 2.4.1 on HP-UX 10.20 and get the following

> during linking:
>
> /usr/ccs/bin/ld: Unsatisfied symbols:
>     PyThread_acquire_lock (code)
>     PyThread_exit_thread (code)
>     PyThread_allocate_lock (code)
>     PyThread_free_lock (code)
>     PyThread_start_new_thread (code)
>     PyThread_release_lock (code)
>     PyThread_get_thread_ident (code)
>     PyThread__init_thread (code)
>
>
> I tried adding the -D_REENTRANT flag to OPTS as suggested in the
> README, but that didn't seem to help/harm.  I searched the python
lists
> and found lots of folks commiserating on HP-UX building, but no
> solutions other than building with '--without-threads', which simply
> isn't an option for me.  Any hints?
> 
> Thanks,
> Scott



From Oyvind.Ostlund at cern.ch  Wed May 11 10:10:08 2005
From: Oyvind.Ostlund at cern.ch (Oyvind Ostlund)
Date: Wed, 11 May 2005 16:10:08 +0200
Subject: Reading files into a 2D list.
Message-ID: <9D1BA87B48D4F440A0D9E371471F45A5112C58@cernxchg21.cern.ch>

 Thanks a lot. That works great. I can't belive how close I was in the end. Well that was the last lines of this application, so thanks a lot.

And thanks for the tip about the portability stuff. I can't belive I didn't think about that. Been writing to much in non portable languages and libs like DirectX lately.


Thanks
??

-----Original Message-----
From: Larry Bates [mailto:lbates at syscononline.com] 
Sent: Wednesday, May 11, 2005 3:55 PM
To: Oyvind Ostlund
Cc: python-list at python.org
Subject: Re: Reading files into a 2D list.

Few observations.

1) Don't concatenate pathnames yourself use os.path.join, that makes your code portable.

lexi_file = open(os.path.join(sys.path[0],"lexi",files), "r")

2) Start with an empty list and append your "lines" lists:

files_and_lines=[]
filenumber = 0

for files in file_names:
    fpath=os.path.join(sys.path[0]),"lexi", files)
    try:
        lexi_file = open(fpath, "r")
        files_and_lines.append(lexi_file.readlines())

    except(IOError):
        print "Something went wrong trying to read the file:"
        print "'%s'" % fpath

lexi_file.close() # Remember to close each file

Now you have:

files_and_lines[0][0] -> Line 1 of the first file files_and_lines[0][1] -> Line 2 of the first file .
.
.
files_and_lines[0][n] -> Line n of the first file files_and_lines[1][0] -> Line 1 of the second file .
.
.

Larry Bates

Oyvind Ostlund wrote:
> I am not sure what the right syntax is here. So please help me out (started 2 days ago).
> 
> I have a list of about 20 files that I want to read line by line into a 2D list. So the first dimension will be each file, and the second every line in that file.
> 
> 
> I tried to do something like this:
> 
>     files_and_lines = [][]
>     filenumber = 0
>     
>     for files in file_names:
>         try:
>             lexi_file = open(str(sys.path[0]) + "/lexi/" + files, "r")
>             files_and_lines[filenumber] = lexi_file.readlines()
>             filenumber = filenumber + 1
> 
>         except(IOError):
>             print "Something went wrong trying to read the file:"
>             print "'" + str(sys.path[0]) + files + "'"
> 
> 
> 
> But that was not very sucksessfully. I am not even sure on how to define an empty 2D list. Thanks for all help.
> 
> ??



From steve at holdenweb.com  Fri May 20 15:31:26 2005
From: steve at holdenweb.com (Steve Holden)
Date: Fri, 20 May 2005 15:31:26 -0400
Subject: Comparing 2 similar strings?
In-Reply-To: <slrnd8p2jd.g9n.chris@ccserver.keris.net>
References: <24a6d$428b9c10$d1b717f8$2300@PRIMUS.CA>	<428BA05D.1010600@lsupcaemnt.com>	<3d9n815cpmavos1fl6ts712h9qogdv3fur@4ax.com>
	<slrnd8p2jd.g9n.chris@ccserver.keris.net>
Message-ID: <428E3B0E.1060004@holdenweb.com>

Chris Croughton wrote:
> On Thu, 19 May 2005 06:38:59 +1000, John Machin 
>    <sjmachin at lexicon.net> wrote:
> 
> 
>>On Wed, 18 May 2005 15:06:53 -0500, Ed Morton <morton at lsupcaemnt.com>
>>wrote:
>>
>>
>>>William Park wrote:
>>>
>>>
>>>>How do you compare 2 strings, and determine how much they are "close" to
>>>>each other?  Eg.
>>>>    aqwerty
>>>>    qwertyb
>>>>are similar to each other, except for first/last char.  But, how do I
>>>>quantify that?
>>>
>>>"However you like" is probably the right answer, but one way might be to 
>>>compare their soundex encoding 
>>>(http://foldoc.doc.ic.ac.uk/foldoc/foldoc.cgi?soundex) and figure out 
>>>percentage difference based on comparing the numeric part.
>>
>>Fantastic suggestion. Here's a tiny piece of real-life test data:
>>
>>compare the surnames "Mousaferiadis" and "McPherson".
> 
> 
> I remember a word processor, MultiMate, which used Soundex to do
> matching for its suggestions for spelling correction.  One of my
> cow-orkers typed the word 'agains' -- it was supposed to be 'against'
> but 'again' would also have been a sensible suggestion.  MultiMate,
> however, suggested neither of those reasonable words, it did suggest
> "iguanas" amd "Utahns"...
> 
> (I wonder what it does with "Talliafero" and "Tolliver", and with
> "Featherstone-Howe" and "Fanshaw"...)
> 
> The answer to the OP, which someone just pointed out to me on
> comp.programming, is "edit distance" or "Levenshtein Distance"[1].  A
> google search on either produces some good descriptions in the first few
> links, including http://www.merriampark.com/ld.htm which has not only a
> description of the algorithm but also source code in Java, C++ and
> Visual Basic (no Awk, thought there are links to pages with
> implementations in Perl, Python, Delphi and many more)...
> 
> [1] I would have spelt it 'Levenstein', and pronounced it 'Levenshtein'
> in Schwaebisch (south German) fashion, but apparently the author of the
> algorithm was one Vladimir I. Levenshtein and that is how he is credited
> on the IEEE site.  There are also a number of Google hits under the
> 'stein' spelling, though...
> 
> Chris C

And what's the Levenshtein distance between "levenshtein" and 
"levenstein"? Ironic if it were large ...

regards
  Steve
-- 
Steve Holden        +1 703 861 4237  +1 800 494 3119
Holden Web LLC             http://www.holdenweb.com/
Python Web Programming  http://pydish.holdenweb.com/



From theller at python.net  Tue May 24 13:53:40 2005
From: theller at python.net (Thomas Heller)
Date: Tue, 24 May 2005 19:53:40 +0200
Subject: py2exe for WMI
In-Reply-To: <mailman.61.1116950229.18027.python-list@python.org>
References: <mailman.61.1116950229.18027.python-list@python.org>
Message-ID: <3fh815F7osuhU1@individual.net>

Tim Golden schrieb:
> [Thomas Heller]
> 
> [... snip problems with py2exe & WMI ...]
> 
> | The OP of the thread Tim mentions here already had a solution, if I 
> | understood him correctly, and the other things that were suggested 
> | didn't work.  Basically, IIUC, he did add the typelib 
> | wrappers from the 
> | 'other' windows version manually to the library.zip file.
> | 
> | Totally different solutions would be:
> | - change Tim's wmi.py module so that it works with dynamic 
> | binding (no 
> | typelib wrappers needed)
> | or
> 
> Well, if it helps, there's a version of the WMI module
> that uses dynamic binding on my site:
> 
> http://timgolden.me.uk/python/downloads/wmi-0.6a.py
> 
> I've hardcoded the relevant constants (which is pretty 
> much all I was using early binding for) and replaced 
> any other EnsureDispatch calls with simple Dispatch.

It may be dangerous since the constants may or may not be the same on 
different versions, at least in theory.  I've appended a small module 
which allows to bind constants from the type library at runtime.
Not much error checking, but you may get the idea.  I'll leave providing 
a proper patch for pywin32, if it makes sense, to those that have more 
time ;-)

> Does anyone want to give it a try to let me know if
> it helps? I don't use py2exe myself.

The simple test case I have works on XP (I don't use wmi myself, except 
as sample for py2exe).

Thomas

# constants.py

class ProvideConstants(object):
     """A class which, when called on a win32com.client.Dispatch object,
     provides lazy access to constants defined in the typelib.

     They can be accessed as attributes of the _constants property."""
     def __init__(self, comobj):
         comobj.__dict__["_constants"] = self
         # Get the typelibrary's typecomp interface
         self.__typecomp = \
comobj._oleobj_.GetTypeInfo().GetContainingTypeLib()[0].GetTypeComp()

     def __getattr__(self, name):
         if name.startswith("__") and name.endswith("__"):
             raise AttributeError, name
         result = self.__typecomp.Bind(name)
         # Bind returns a 2-tuple, first item is TYPEKIND,
         # the second item has the value
         if not result[0]:
             raise AttributeError, name
         return result[1].value

if __name__ == "__main__":
     from win32com.client import Dispatch
     d = Dispatch("WbemScripting.SWbemLocator")
     ProvideConstants(d)

     print d._constants.wbemImpersonationLevelAnonymous
     print d._constants.wbemImpersonationLevelDelegate


From jepler at unpythonic.net  Wed May  4 10:21:18 2005
From: jepler at unpythonic.net (Jeff Epler)
Date: Wed, 4 May 2005 09:21:18 -0500
Subject: A faster method to generate a nested list from a template?
In-Reply-To: <117hlf2rvh6q28e@corp.supernews.com>
References: <117hlf2rvh6q28e@corp.supernews.com>
Message-ID: <20050504142118.GB14737@unpythonic.net>

Are there only a few, unchanging templates?  If so, (dynamiclly) create
a function for each template.  This will be nearly the fastest you can
go in Python, excluding the time to create and byte-compile the nesting
function.

# This code is in the public domain
def make_nesting_expression(l, s):
    result = []
    for c in l:
        if isinstance(c, list):
            sub, s = make_nesting_expression(c, s)
            result.append(sub)
        else:
            result.append("l[%d]" % s)
            s += 1
    print "make_nesting_expression", l, result
    return "[" + ",".join(result) + "]", s

def make_nesting_function(l):
    return eval("lambda l: %s" % make_nesting_expression(l, 0)[0])

t = [['a1','a2'],['b1'],['c1'],['d1']]
l = [1, 2, 3, 4, 5]
f = make_nesting_function(t)
print f(l)

Jeff
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From timothy at open-networks.net  Wed May  4 06:46:16 2005
From: timothy at open-networks.net (Timothy Smith)
Date: Wed, 04 May 2005 20:46:16 +1000
Subject: py2exe and library.zip
In-Reply-To: <8c7f10c605050403363c34f97c@mail.gmail.com>
References: <mailman.76.1115095357.6583.python-list@python.org>	
	<5uadnUTTqv6Iw-rfRVn-qw@powergate.ca>	
	<4277EF15.2030605@open-networks.net>	
	<8c7f10c6050504032010d9920@mail.gmail.com>	
	<4278A377.3000504@open-networks.net>
	<8c7f10c605050403363c34f97c@mail.gmail.com>
Message-ID: <4278A7F8.7040908@open-networks.net>

Simon Brunning wrote:

>On 5/4/05, Timothy Smith <timothy at open-networks.net> wrote:
>  
>
>>Simon Brunning wrote:
>>    
>>
>>>The zip file is a generated artifact. I've always found it a good rule
>>>of thumb that you should keep source artifacts in your version control
>>>system, not generated artifacts.
>>>
>>>
>>>
>>>      
>>>
>>version control systems are used for many purposes. it's just as
>>important to keep track of your packaged releases and documentation as
>>it is source code.
>>its also a very convenient method of keeping people up with the lastest
>>version.
>>    
>>
>
>Well, they may be used for many things, but what they are *good* at is
>what they were designed for. Use them to do a job that they *weren't*
>designed for, and they don't do so well.
>
>  
>
don't do so well how.  all it does is keep of files and tracks their 
revisions.

>The zip file essentially contains the whole system in on lump. Change
>the system, and naturally your users will have to download the whole
>lump again. (In my 'day job', I'm a Java web app developer. We keep
>the source for our systems in SVN, any 3rd party JARs, and our build
>scripts. We *used* to keep the installable WAR files in there too, but
>we've stopped doing that now, for this reason amongst others.)
>  
>
but if it was just a dir, when they update from the svn at log in, all 
they do is download the extra\changed files. much much quicker then 
downloading a 4 meg uncompressed zip file.
there's no technical reason for this not to work that i can see, apart 
from py2exe's ability/inablity to not use a zip file.

>  
>
>>i know i've seen what i'm asking for before, but no one seems to be able
>>to tell me.
>>    
>>
>
>Sorry, but I'm not aware that py2exe can do this, or has ever been
>able to. Again, it's designed to build you a minimum-file-count
>distributable, and that's what it's good at.
>
>  
>



From robynari at juno.com  Sun May 22 14:43:29 2005
From: robynari at juno.com (FatKat)
Date: 22 May 2005 11:43:29 -0700
Subject: I want to ask you the most important question of your life. The
	question is: Are you saved? It is not a question of how good
	you are, nor if you are a church member,
	but are you saved? Are you sure you will go to Heaven when you die? The
	reason some people don't know for sure if they are going to
	Heaven when they die is because they just don't know. The good
	news is that you can know for sure you are going to Heaven. May
	22, 2005 12:10:55 pm
In-Reply-To: <1116778225.166227.128130@z14g2000cwz.googlegroups.com>
References: <1116778225.166227.128130@z14g2000cwz.googlegroups.com>
Message-ID: <1116787409.829347.263730@g14g2000cwa.googlegroups.com>

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THIS IS NOT SPAM.


YOU DO NOT HAVE TECHNOLOGY TO RECIVE CONCIOUS MESSAGING


YOU ARE RECEIVING THIS MESSAGE FROM EARTH YEAR 2019 A.D./0011 A.S. IN
ORDER TO PREVENT FURTHER SPAM MESSAGING BY RLG101... at yahoo.com.



From peter at engcorp.com  Sun May  8 09:25:01 2005
From: peter at engcorp.com (Peter Hansen)
Date: Sun, 08 May 2005 09:25:01 -0400
Subject: SGMLlib module
In-Reply-To: <1115558176.212693.45280@z14g2000cwz.googlegroups.com>
References: <1115558176.212693.45280@z14g2000cwz.googlegroups.com>
Message-ID: <G5udnc_q7Z4fjuPfRVn-hg@powergate.ca>

Harlin Seritt wrote:
> I am trying to use SGMLlib module to extract all links from some data I
> pulled from the web (via urllib). I have looked at the documentation
> online and can not make sense of it. As a quick example, how would I
> get the hyperlinks for an html file?

I know you're not someone to ignore Google, but this looked like a 
question that could pretty easily be answered using a quick search of 
the comp.lang.python archives via Google Groups -- and it appears I was 
right.

I tried 
http://groups.google.ca/groups?q=sgmllib+extract+links+group%3Acomp.lang.python.* 
and found this page, which I believe should answer your question 
(perhaps not directly, but it looks basically like an sgmllib tutorial): 
http://www.oreilly.com/catalog/pythonsl/chapter/ch05.html

I'm pretty sure you can find a dozen threads with snippets showing just 
what you asked if you look at the result of the results.

-Peter


From bokr at oz.net  Sun May 15 03:42:35 2005
From: bokr at oz.net (Bengt Richter)
Date: Sun, 15 May 2005 07:42:35 GMT
Subject: converting a set into a sorted list
References: <1116120701.520116.315230@f14g2000cwb.googlegroups.com>
	<mailman.4.1116124266.15315.python-list@python.org>
Message-ID: <4286fb3e.214211740@news.oz.net>

On Sat, 14 May 2005 19:20:24 -0700, Robert Kern <rkern at ucsd.edu> wrote:

>MackS wrote:
>> Dear all,
>> 
>> I've got several large sets in my program. After performing several
>> operations on these I wish to present one set to the user [as a list]
>> sorted according to a certain criterion. Is there any direct way to do
>> so? Or must I
>> 
>> list = []
>> 
>> for item in set1:
>>    list.append(item)
>> 
>> list.sort(....)
>> 
>> Can I somehow avoid doing this in two stages? Can I somehow avoid first
>> creating a long list only to immediately sort it afterwards?
>
>In Python 2.4,
>
>In [1]:sorted?
>Type:           builtin_function_or_method
>Base Class:     <type 'builtin_function_or_method'>
>String Form:    <built-in function sorted>
>Namespace:      Python builtin
>Docstring:
>     sorted(iterable, cmp=None, key=None, reverse=False) --> new sorted list
>
That's plenty of information, but IMO "key=None" doesn't hint strongly enough
about what you can do with it, so I'd advise reading about all the parameters ;-)

Regards,
Bengt Richter


From peter at engcorp.com  Tue May 31 11:38:58 2005
From: peter at engcorp.com (Peter Hansen)
Date: Tue, 31 May 2005 11:38:58 -0400
Subject: change vars in place w/loop or list comprehension
In-Reply-To: <1117547939.650578.316090@g47g2000cwa.googlegroups.com>
References: <1117547939.650578.316090@g47g2000cwa.googlegroups.com>
Message-ID: <nJWdnSKBA7WsGAHfRVn-pg@powergate.ca>

ken.boss at dnr.state.mn.us wrote:
> I am a python newbie, and am grappling with a fundamental concept.  I
> want to
> modify a bunch of variables in place.  Consider the following:
> 
[snip]
>>>>a = 'one'
>>>>b = 'two'
>>>>c = 'three'
>>>>[a, b, c] = [s.upper() for s in [a, b, c]]
> 
> Both of these accomplish what I'm after; I prefer the second for its
> brevity.
> But either approach requires that I spell out my list of vars-to-alter
> [a, b, c] twice.  This strikes me as awkward, and would be difficult
> with longer lists. Any suggestions for a better way to do this?

While the real question is why you think you need to modify a bunch of 
variables in place**, here's one solution to the immediate problem:

for name in 'a b c'.split():
     globals()[name] = globals()[name].upper()

That, of course, will work only if they really are globals, and not if 
they are local variables inside a function.  If that's the case, you 
really want to rethink this anyway (or use Raymond's approach, though it 
still appears to require spelling out your list of names twice).

** Why you might not want to do this at all:

It's very rare in real code to need to work with a large number of 
variables as a set like that.  More generally you should probably be 
storing the strings in something like a list and manipulating them 
there.  This would look like this:

shtuff = ['a', 'b', 'c']
for i,item in enumerate(shtuff):
     shtuff[i] = item.upper()

Or, even more likely:

newList = []
for item in shtuff:
     newList.append(item.upper())

shtuff = newList


If you think you really need to do this anyway, consider posting an 
example of real code from the program you are trying to write, 
explaining the actual use case, and we can analyze the real situation 
instead of debating contrived examples.

-Peter


From peter at engcorp.com  Fri May 27 18:24:54 2005
From: peter at engcorp.com (Peter Hansen)
Date: Fri, 27 May 2005 18:24:54 -0400
Subject: [pysqlite] Equivalent for SHOW TABLES?
In-Reply-To: <d77sqb$6lk$1@news.hispeed.ch>
References: <d77sqb$6lk$1@news.hispeed.ch>
Message-ID: <itednablN7XWAwrfRVn-qg@powergate.ca>

F. GEIGER wrote:
> For now, the names of the tables, the app knows of, are added into an
> internal list, when the app is started. Then, when queries fail, the app
> knoes that it has to create them.
> 
> It would be nice somehow to be able to ask the database what tables it
> contains. Is anyone doing this that way? How do you do that?

The query "select name from sqlite_master where type='table';" should do 
something like that.  (I found that info in the FAQ as answer #9.)

-Peter


From bokr at oz.net  Fri May  6 22:29:48 2005
From: bokr at oz.net (Bengt Richter)
Date: Sat, 07 May 2005 02:29:48 GMT
Subject: hard memory limits
References: <d5f9jl$k6d$1@domitilla.aioe.org>	<mailman.88.1115374567.29826.python-list@python.org>	<d5gphu$hij$1@domitilla.aioe.org>
	<mailman.115.1115419109.29826.python-list@python.org>
	<d5h4eb$g5v$1@domitilla.aioe.org>
Message-ID: <427c258b.868346285@news.oz.net>

On Sat, 07 May 2005 11:08:31 +1000, Maurice LING <mauriceling at acm.org> wrote:

>James Stroud wrote:
>
>> Sorry Maurice, apparently in bash its "ulimit" (no n). I don't use bash, so I 
>> don't know all of the differences offhand. Try that.
>> 
>> James
>
>Thanks guys,
>
>It doesn't seems to help. I'm thinking that it might be a SOAPpy 
>problem. The allocation fails when I grab a list of more than 150k 
>elements through SOAP but allocating a 1 million element list is fine in 
>python.
>
>Now I have a performance problem...
>
>Say I have 3 lists (20K elements, 1G elements, and 0 elements), call 
>them 'a', 'b', and 'c'. I want to filter all that is in 'b' but not in 
>'a' into 'c'...
>
> >>> a = range(1, 100000, 5)
> >>> b = range(0, 1000000)
> >>> c = []
> >>> for i in b:
>...     if i not in a: c.append(i)
>...
>
>This takes forever to complete. Is there anyway to optimize this?
>
Checking whether something is in a list may average checking equality with
each element in half the list. Checking for membership in a set should
be much faster for any significant size set/list. I.e., just changing to

      a = set(range(1, 100000, 5))

should help. I assume those aren't examples of your real data ;-)
You must have a lot of memory if you are keeping 1G elements there and
copying a significant portion of them. Do you need to do this file-to-file,
keeping a in memory? Perhaps page-file thrashing is part of the time problem?

Regards,
Bengt Richter


From prabapython at yahoo.co.in  Tue May 10 07:41:51 2005
From: prabapython at yahoo.co.in (praba kar)
Date: Tue, 10 May 2005 12:41:51 +0100 (BST)
Subject: Regarding Mail sending Module
In-Reply-To: <d5q42t$sh5$1@online.de>
Message-ID: <20050510114152.71018.qmail@web8403.mail.in.yahoo.com>

Dear All,
      In Php we can do all the mailing operations like
sending a text as a message, adding attachment to a
mail, adding additional headers and so on using
Mail_mime class.  I want to know like that class or
modules in Python. 
   I already gone through MimeWriter,smtplib and so
on. But I can't get clear details. so if anyone know
regarding this kindly give me answer

regards
Prabahar


________________________________________________________________________
Yahoo! India Matrimony: Find your life partner online
Go to: http://yahoo.shaadi.com/india-matrimony


From andy2O at hotmail.com  Fri May 20 06:43:35 2005
From: andy2O at hotmail.com (andy2O at hotmail.com)
Date: 20 May 2005 03:43:35 -0700
Subject: OO design question / Transform object in place?
References: <1115825605.654601.137580@f14g2000cwb.googlegroups.com>
	<50qge.9716$D91.477@fed1read01>
Message-ID: <1116585815.095195.141750@g43g2000cwa.googlegroups.com>

Dave Benjamin wrote:
> andy2O at hotmail.com wrote:
> > Now suppose I set "expression2 = Sum([a,-a])" and Sum.simplify()
> > recognises that the two terms cancel and the Sum has value 0.
> >
> > Can I make "expression2.simplify()" transform expression2 from an
> > instance of Sum to an instance of Number(0) **in place**? Is that
> > possibe, or do I really have to write
>
> I think it's much better for simplify() to return a new object
always,
> and leave the original object unmodified. You can still write:
>
> expression2 = expression2.simplify()

Dave,

A belated thank-you message for your reply to my posting. I took your
advice, and made all the simplify methods return new objects and this
has simplified my code structure a great deal (and any slow down in run
time just doesn't matter!).

Am I right that to make "expression2.simplify()" return a new object I
will need use copy.copy a lot, as in:

def simplify(self):
    newreturnvalue=copy.copy(self)
    #
    #....now the code does lots of complicated things
    #    to newreturnvalue object...
    #
    return newreturnvalue

I have a nagging doubt as to whether this is what you meant, or if I've
missed a trick again.

Anyway, thanks again for your reply.

Yours,
Andy.

>
> if you don't care about the old value.
>
> > expression2 = SimplifyFunction(expression2)
>
> This is another valid solution, but it's not an OO solution (you will

> need to use "isinstance" to write "SimplifyFunction").
>
> > and use the function return to set expression2 to be a Number(0)
> > object, which is annoying for a variety of reasons! Have I made a
> > mistake in the design?
>
> It's usually considered poor OO style to have an object change its
class
> at runtime, although I'm sure you could do it in Python ("__bases__"
> would be a place to start) if you really wanted. For what you're
trying 
> to do, I don't think it's necessary, though.
> 
> Dave



From http  Wed May 11 00:57:29 2005
From: http (Paul Rubin)
Date: 10 May 2005 21:57:29 -0700
Subject: Python Args By Reference
References: <1115769308.136143.74080@f14g2000cwb.googlegroups.com>
	<1182j1daaepv6f4@corp.supernews.com>
	<1115787330.723188.295610@f14g2000cwb.googlegroups.com>
Message-ID: <7xbr7igy12.fsf@ruckus.brouhaha.com>

"ncf" <nothingcanfulfill at gmail.com> writes:
> Since I cannot simply do it the way I had originally seen it, would
> there be an alternative method to proforming the operations that I am
> missing?

Use an array instead of all those named variables.


From gandalf at geochemsource.com  Mon May 23 10:04:53 2005
From: gandalf at geochemsource.com (Laszlo Zsolt Nagy)
Date: Mon, 23 May 2005 16:04:53 +0200
Subject: minidom and DTD
In-Reply-To: <4291d6a2$0$10994$9b622d9e@news.freenet.de>
References: <mailman.15.1116844419.18027.python-list@python.org>
	<4291d6a2$0$10994$9b622d9e@news.freenet.de>
Message-ID: <4291E305.6010207@geochemsource.com>

Martin v. L?wis wrote:

>Laszlo Zsolt Nagy wrote:
>  
>
>>How can I put the
>>
>><!DOCTYPE collection SYSTEM "recipes.dtd">
>>
>>thing into an XML created by xml.dom.minidom?
>>    
>>
>
>You should put a DocumentType node into your
>DocumentNode, and pass a qualifiedName of
>"collection" and a systemId of "recipes.dtd"
>to the createDocumentType call.
>  
>
That worked, thank you.


From whocaresrmb at yahoo.com  Wed May 18 23:49:36 2005
From: whocaresrmb at yahoo.com (Johnny Gentile)
Date: 18 May 2005 20:49:36 -0700
Subject: another title shortener
In-Reply-To: <1116456748.906548.175760@g49g2000cwa.googlegroups.com>
References: <1116456748.906548.175760@g49g2000cwa.googlegroups.com>
Message-ID: <1116474576.028373.244700@o13g2000cwo.googlegroups.com>

.
Ron4512328 at yahoo.com wrote:
> Best Viewed at << 1024x768 >>
>
http://groups-beta.google.com/group/alt.religion.christian/browse_thread/thread/73352e0ed6923d23/1ea6c7a1ea6923ab?hl=en#1ea6c7a1ea6923ab
>
>
*******************************************************************************************
>
*******************************************************************************************
>
*******************************************************************************************
>
*******************************************************************************************
>
>
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>
> This means that if you die without trusting in Jesus Christ
> as your Lord and Saviour you will die in your sins and be
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>
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> have rejected Jesus Christ.
>
> The good news is that you can avoid Hell by allowing
> Jesus Christ to save you today. Only then will you
> have true peace in your life knowing that no matter
> what happens you are on your way to Heaven.
>
>
>
>
> Praise the Lord!
> Servant of the Lord Jesus Christ
> Ronald L. Grossi
>
>
> * Show this to your family and friends so they can also be saved.
>
> * This message may get deleted so you may want to print a copy.
>
> * Just press the [Ctrl][P] keys on your keyboard to print this page.
>
>
>
> ____________________________________________________________
>
>
>
>
> [Please Visit These Excellent Websites]
>
>
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>
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>
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> http://www.tbn.org/index.php/8/1.html
>
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> http://www.godssimpleplan.org/gsps.html
>
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> http://www.thepassionofthechrist.com
>
> Beware Of Cults
> http://www.carm.org/cults/cult_list.htm
>
> About Hell
> http://www.equip.org/free/DH198.htm
>
> Is Jesus God?
> http://www.powertochange.com/questions/qna2.html
>
> Free Online Bible
> http://www.biblegateway.com
>
>
>
>
>
>
*******************************************************************************************
>
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>
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>
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From tkpmep at hotmail.com  Wed May 25 10:06:06 2005
From: tkpmep at hotmail.com (tkpmep at hotmail.com)
Date: 25 May 2005 07:06:06 -0700
Subject: Using properties
Message-ID: <1117029966.799908.183830@f14g2000cwb.googlegroups.com>

I have a class with a name attribute, which I want to modify using
property.The following code works just fine:

class Portfolio(object):

    def __init__( self, name="Port1"):
        self.name=name

    def getname(self):
        return self._name

    def setname(self,newname="Port2"):
        self._name=newname

    name=property(getname,setname,None,None)

However, it no longer works if I modify getname and setname to

    def getname(self):
        return self.name

    def setname(self,newname="Port2"):
        self.name=newname

Why is it so critical to have getname and setname modify _name and not
name? The constructor does not make name a private attribute, so why do
getname and setname have to treat it as such?

Thomas Philips



From rbt at athop1.ath.vt.edu  Mon May 16 15:06:03 2005
From: rbt at athop1.ath.vt.edu (rbt)
Date: Mon, 16 May 2005 15:06:03 -0400
Subject: Python RPM and CentOS
Message-ID: <d6aqur$hhh$1@solaris.cc.vt.edu>

Not really a Python question, but I thought some on this list may be 
able to answer.... so here goes:

I have several machines on which I must install CentOS. There are many 
updates to CentOS and it's very time consuming to do the updates over 
the network. I have a local copy of all of the updated rpms. Would it be 
reasonable to do something like this to upgrade them locally and more 
quickly than over the network???

updated_rpms = [list of updated rpms]

for f in updated_rpms:

     try:
         os.popen("/bin/rpm --nodeps -U %s" %f)

     except Exception, e:
         print e


Thanks,

rbt


From claird at lairds.us  Wed May 18 14:08:07 2005
From: claird at lairds.us (Cameron Laird)
Date: Wed, 18 May 2005 18:08:07 GMT
Subject: Is Python suitable for a huge, enterprise size app?
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>
Message-ID: <jmbsl2-opn.ln1@lairds.us>

In article <1116430620.004234.187280 at f14g2000cwb.googlegroups.com>,
john67 <teamuhlig at gmail.com> wrote:
>The company I work for is about to embark on developing a commercial
>application that will cost us tens-of-millions to develop.  When all is
>said and done it will have thousands of  business objects/classes, some
>of which will have hundreds-of-thousands of instances stored in a DB.
>Our clients will probably have somewhere between 50-200 users working
>on the app during the day, possibly in mutiple offices, and then a
>large number of batch processes will have to run each night.  It will
>also need to have a web interface for certain users.  It needs to be
>robust, easy to maintain, and able to be customized for each client.
>
>Right now it looks like Java is the language of choice that the app
>will be developed in. However, I have been looking and reading a lot
>about Python recently and it seems to me that Python could handle it.
>The big attraction to me is the developer productivity.  It seems that
>if Python can handle it, then we could gain a huge savings by using
>Python instead of Java from a productivity standpoint alone.
>
>So, given the very general requirements in the first paragraph, do you
>think that Python could handle it?  If anyone has direct experience
>developing large apps in Python, I would appreciate your insight.
>Based on the responses I get, I am planning on writing a proposal to my
>management to consider Python instead of Java.
			.
			.
			.
My flippant response is that you'll need to choose Java if
you want it to cost that much.

Phaseit regularly develops applications that serve *thousands*
of users, with database record counts in the millions, and our
total costs are typically in the tens of thousands of dollars,
rather than tens of millions.

On the other hand, maybe I don't want you doing this in Python.
Most enterprise projects fail--or at least there's plausible
evidence to believe that most fail--and perhaps I shouldn't 
encourage Python's use in something that will fail.


From jstroud at mbi.ucla.edu  Tue May 24 14:27:38 2005
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Tue, 24 May 2005 11:27:38 -0700
Subject: Encryption with Python?
In-Reply-To: <03c401c56038$db0e26e0$0201a8c0@mcuf7>
References: <1115324411.952821.150780@o13g2000cwo.googlegroups.com>
	<6vh881d59bbecnc45fojknt0rohgt27crl@4ax.com>
	<03c401c56038$db0e26e0$0201a8c0@mcuf7>
Message-ID: <200505241127.38663.jstroud@mbi.ucla.edu>

For your own good, please change your credit card number now! You have 
obviously lost your mind. Please read Applied Cryptography if you are 
wondering why I would say this. I am not trying to be mean.

For example:

I have access to 80 Pentium 3 cpus (at ~1.8 GHz) and have engineered a simple 
brute force on this (in pure python) that can check 2**31 integers overnight. 
I timed it. I used absolutely NO optimization. Also, beyond these 2**31 
integers, I stopped trying because I have other things to do--I had no 
incentive. Now your credit card info is on the line. I'm a rank ammy and I'm 
sure a skilled programmer could speed it up 100 to 1000 fold (1000 ~ 2**10). 
Also, this was for your first message about which I knew positively nothing. 
You have made the job now several times easier (lets say 10 ~ 2**3) by 
disclosing the nature of the plain text. If you think that there are lots of 
"keys" that map some part of your cipher text to a set of 16 numbers (+/-) 
separators, you are right. But they would be some small fraction of the total 
keyspace. 10**6 such keys could be stored easily and so second and later 
rounds of analysis would be trivial.

So lets do some math. Say someone had the same computing power as I do. Say, 
we could start with 2**32 keys in 24 hours or 1 day. Now lets say they are a 
good programmer: 2**32 * 2**10 keys/day. Now lets say they take full 
advantage of knowing the nature of the plain text: 3**32 * 2**10 * 2**3. Lets 
say they put 2 weeks of computing time into it: 14 days ~ 2**4 days.

Of course both + and - integers are possible, so we'll divide our final answer 
by 2 later.

So, say you had a highly motivated, reasonably adept programmer whose lack of 
cryptanalysis knowledge limited himself to brute force--but he had a lot of 
computers and 2 weeks to work with--and was checking both + and - integers:

2**(32+10+3+4-1) = 281474976710656

That's 15 digits. That is a telephone number (with area code) and a 5 digit 
zip. That's 2 birthdays, easy. That is easily the hash of any hashable python 
object (only 2**32 possibilities for these). Do you get the point? Basically, 
these 15 digits are about the limit of any managable key.

Now, lets say you have someone skilled at cryptanalysis. Well, they are 
probably already trying to figure out what they want to buy first. Normally I 
wouldn't warn you of this, but I am positively certain that someone smarter 
than me will be spending on your credit card and I want to spoil their 
holiday.

James


On Tuesday 24 May 2005 01:16 am, Anthra Norell wrote:
> I wasn't going to pursue this any further. Actually, I am quite
> disappointed about the belligerent style of some correspondents. It's not
> necessary. It spoils the fun. It cloggs bandwidth.
>    Why whack someone over the head who tries to develop an idea of his own.
> Such an approach isn't uncommon to earn extra credit in educational
> settings.
>    True, I have also been offered good advice and being able to extract it
> from between insuslts I have expressed my appreciation for it. In return of
> the favor I offer a little anecdote about the nature of creativeness.
>    The connection between candor and creativeness has always fascinated me.
> At some point, almost thirty years ago, I came across an article in a hang
> glider magazine by one Dr. Paul MacCready who had just won the Kremer Prize
> with his human-powered Gossamer Condor, a prize that had been standing for
> decades despite innumerable unsuccessful attempts to win it. In that
> article MacCready explained that it was the advent of hang gliders that
> gave him the idea to go for the Kremer prize. Namely, he immediately
> realized that hang gliders dissipated less energy in stable flight than any
> other aircraft in existence, not because the flew so well--they didn't--but
> because of their low weight. He calculated that a twenty-kilogram hang
> glider with a wing span of close to thirty meters would dissipate no more
> than one third of a horse power or thereabout and that is an amount of
> energy a competition cyclist generates over the course of a race.
>     After winning the prize, MacCready challenged himself to fly across the
> English channel and started building an improved second version of his
> airplane. Passing through Los Angeles I went to see the project in a Long
> Beach hangar and took the opportunity to pick MacCready's brain for the
> benefit of our own magazine. Referring to his article I confessed my
> surprise that a scientist of his caliber would be inspried by such crude
> aeronautical engineering hacks as hang gliders unquestionably were. His
> reply was this:
>     "I also consider myself an amateur. I have a PhD in aeronautics, but
> not in aeronautical engineering. But this just might have been my
> advantage. All these many previous failed attempts had been made by people
> with better engineering credentials. If their conception of possible
> solutions was better defined, it was probably also more constrained by
> their knowledge of what an airplane is supposed to be."
>     We went on talking about creativeness and MacCready's conclusion still
> rings in my ears: "Our education system encourages us to be critical. This
> is a great pity. It reinforces our habit to focus on other people's
> weaknesses and failures, when we could learn from observing their
> strengths."
>
> Frederic
>
> (Robert Kern could have embarrassed me with a plain-text attack, although
> his bounty wouldn't have been my credit card details. I tought about
> plain-text attacks and found that in addition to changing the values of
> bytes I also needed to shuffle them a little. So I added a few lines,
> encoded my credit card details and here it is, program, credit card
> details, everything but the key.)
>
> 1. The credit card details:
>
> string =
> '\x84ue\x8d\xec\x98\x02\xba<n\t\xc6\xa6\xd2\xcc\xe4O\x11\xd7\xf5\xe7\x9c\xe
>d
> *\x05\x1e\xb3h\x97V\xf8\x9a"%\xec\x14\x03r\xdd\xda\x18\xc0\x9fc\x04&J\xefF\
>x
> cd\xbc\x81\xad\xfe\xb4SV\x1a7[l\x12\xfd\xc9w\xc3u\xf4\x83tK\x1e]{\xf5/\xbfJ
>\
> x8a\xde\x18\xc2jj\xe8er\x10\x99\x1e\xeb\xa3\x86\xf0f\xb9\x95\xb5\xd8\xaaY\x
>0 8\xb8\xcdf.'
>
> 2. The decoding program
>
> def cyrep (string, key):
>
>    """To encrypt use a numeric value as the key. To decrypt use the
> negative value of the same number."""
>
>    import random
>
>    CHUNK  = 32
>
>    def process_sequence (sequence):
>       s = ''
>       for i in xrange (len (sequence)):
>          r = random.randint (0, 255)
>          s += chr ((ord (sequence [i]) + r * sign) % 256)
>       return s
>
>    def preprocess_sequence (sequence):
>       random.shuffle (sequence)
>       return sequence
>
>    sign = (key > 0) * 2 - 1
>    random.seed (abs (key * sign))
>
>    i = 0
>    s = ''
>
>    if sign > 0:
>       while i < len (string):
>          chunk = random.randint (0, CHUNK)
>          s_ = preprocess_sequence (list (string [i:i+chunk]))
>          s += ''.join (process_sequence (s_))
>          i += len (s_)
>
>    else:
>       while i < len (string):
>          chunk = random.randint (0, CHUNK)
>          s_ = list (string [i:i+chunk])
>          l = len (s_)
>          l_ = range (l)
>          s__ = l * [None]
>          o  = preprocess_sequence (l_)
>          s_ = process_sequence (s_)
>          for ii in l_:
>             s__ [o[ii]] = s_ [ii]
>          s += ''.join (s__)
>          i += l
>
>    return s
>
>
>
> ----- Original Message -----
> From: "Christos TZOTZIOY Georgiou" <tzot at sil-tec.gr>
> Newsgroups: comp.lang.python
> To: <python-list at python.org>
> Sent: Friday, May 13, 2005 11:06 AM
> Subject: Re: Encryption with Python?
>
> > On Sat, 7 May 2005 13:51:40 +0200, rumours say that "Anthra Norell"
> >
> > <anthra.norell at tiscalinet.ch> might have written:
> > >Here's the challenge. Prove this breakable
> >
> >'\x10\x88d\x1d\xba\xa1\xdcK\x05w\x02/s\xa7Q0\xeb8\xb6Gx\xef\xcb\x1e=\xf5\x
> >7
>
> f
>
> >\x9bI\xcb(\x87>\xa5\x04\xc1soF\xfd\xc6\xc6\xd9|\x971\xdb\xcdT\tw#\x86a\xdc
> >\
>
> x
>
> >b8P\xfb=n\xda\x80\x9f\x84m\x12\x98\x98\xca=o\x0b\x8e\x08O\xb7\x0b\x04SC\x9
> >6
>
> \
>
> >xc7\xab*\x0b\x996\x06\x86\x83(\x8dQ\x9eG\x8f$\xb2x)\xa9fv\x0c1B\x9b\r\xde\
> >x
>
> f
>
> > >fc\x08'
> >
> > and given that
> >
> > >I rolled my own for relatively short sequences, like passwords. The key
>
> is
>
> > >an integer. To decrypt use the negative encryption key. I consider the
> > >encryption unbreakable, as it is indistinguishable from a random
>
> sequence.
>
> > can we suppose that the encrypted text above are the details of your
> > credit card (number, name as written on it, expiry date, billing address
> > and your first dog's name)?  Do you trust the 'unbreakability' of your
> > algorithm that much?
> > --
> > TZOTZIOY, I speak England very best.
> > "Be strict when sending and tolerant when receiving." (from RFC1958)
> > I really should keep that in mind when talking with people, actually...
> > --
> > http://mail.python.org/mailman/listinfo/python-list

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From zunbeltz at gmail.com  Fri May 13 08:06:15 2005
From: zunbeltz at gmail.com (Zunbeltz Izaola)
Date: Fri, 13 May 2005 14:06:15 +0200
Subject: stop a thread safetely
Message-ID: <pan.2005.05.13.12.06.14.991870@gmail.com>

Hi,

I have a wxPython application that call makes a thread (with threading
module). In some moment i've to stop the thread but i need to finish a 
funtion in the thread before it can stop. How can i achive this?

Thanks in advance

Zunbletz


From daniel.dittmar at sap.corp  Tue May  3 08:38:13 2005
From: daniel.dittmar at sap.corp (Daniel Dittmar)
Date: Tue, 03 May 2005 14:38:13 +0200
Subject: lists in cx_Oracle
In-Reply-To: <pan.2005.04.30.17.02.16.988085@dalkescientific.com>
References: <pan.2005.04.05.18.44.52.434578@dalkescientific.com>
	<pan.2005.04.30.17.02.16.988085@dalkescientific.com>
Message-ID: <d57rds$mbd$1@news.sap-ag.de>

Andrew Dalke wrote:
> I want to execute a query with an "IN" in the WHERE clause
> and with the parameter taken from a Python variable.  That
> is, I wanted something like this to work
> 
> id_list = ["AB001", "AB002", "AB003"]
> 
> c.execute("""SELECT s.smiles FROM smiles_database s WHERE """
>          """  s.id IN :id_list""", id_list = id_list)
> 
> I couldn't get it to work.  It complained
> 
>     arrays can only be bound to PL/SQL statements
> 

Possible workarounds:
- use executemany: a few databases allow to execute several sets of 
input parameters at once. And even fewer allow this for SELECTs, where 
the result is one cursor created from the UNION of a SELECt for each set 
of input parameters. Apart from being unlikely to work, this also 
requires that *all* input parameters are lists of the same length 
(unless the driver is smart enough to expand skalars to lists in this 
context)

- specify a maximum number of input parameters 's.id in (:id0, :id1, 
...)' and fill missing values with the first value

- create a class for this purpose. Statement are created on the fly, but 
with placeholders so you don't run into the SQL Injection problem. As 
it's an object, you could cache these generated statements base on the 
size of the list

- create a temporary table, insert all the values into that table 
(executemany is great for INSERTS) and then join with that table

You could also search comp.language.java.database where this is a 
frequent question.

It is unlikely that this can be solved at the driver level. Without 
support from the database, the driver would have to manipulate the SQL 
statement. And there are few predicates where a list parameter is 
useful. Expanding a list always yould lead to very bizarre error 
messages. Expanding them only where useful would require a SQL parser.

Daniel


From sjmachin at lexicon.net  Thu May 26 02:33:25 2005
From: sjmachin at lexicon.net (John Machin)
Date: Thu, 26 May 2005 16:33:25 +1000
Subject: evaluated function defaults: stored where?
In-Reply-To: <gsble.1244$m%3.385@trnddc02>
References: <gsble.1244$m%3.385@trnddc02>
Message-ID: <42956DB5.6080302@lexicon.net>

David Isaac wrote:
> Default parameter values are evaluated once when the function definition is
> executed.
> Where are they stored?

A good bet for where to start looking for the storage would be as an 
attribute of the function object. From this point, there are two paths:

(a) Make a function and inspect it:

 >>> def fun(a,b=42,c=666):
...    pass
...
 >>> dir(fun)
['__call__', '__class__', '__delattr__', '__dict__', '__doc__', 
'__get__', '__getattribute__', '__hash__', '__init__', '__module__',
  '__name__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', 
'__setattr__', '__str__', 'func_closure', 'func_code', 'func_defa
ults', 'func_dict', 'func_doc', 'func_globals', 'func_name']
 >>> fun.func_defaults
(42, 666)
 >>>


(b) Become familiar with the general structure of the manuals.
By process of elimination, the Python Reference Manual would be a good 
place to start for a question of this type.
Inside that manual, this is a likely candidate:
"""
3.2 The standard type hierarchy
Below is a list of the types that are built into Python.
"""

I'll leave you to read further ...

>  (A guess: in a dictionary local to the function.)

As you've seen the default values are contained in a tuple. So where are 
the keys of the mapping {'b': 42, 'c': 666} that you expected? Suppose 
*you* do the extra research and report back ...

> Where is this documented?

See above.

> 
> As a Python newbie I found this behavior quite surprising.

Surprisingly good, bad or just different? Do you have alternate 
non-surprising behaviours in mind?

> Is it common in many other languages?

That makes two of us who don't know and haven't done any research :-)
My impression based on a limited number of different languages that I've 
worked with or looked at is that Python's apparatus is the best I've 
seen; YMMV.

> Is it unsurprising if I look at it right?

Yes; in general this is true across many domains for a very large number 
of referents of "it" :-)

Cheers,
John


From news at titanic.co.uk  Fri May 27 06:15:28 2005
From: news at titanic.co.uk (Simon Faulkner)
Date: Fri, 27 May 2005 11:15:28 +0100
Subject: CygWin ODBC
Message-ID: <4296f337$0$38045$5a6aecb4@news.aaisp.net.uk>

Hi All,

I am new to Cygwin and am hoping that someone here will be able to tell 
me how to get ODBC running in Python on Cygwin.

Maximum gratefullness...


Simon


From michele.simionato at gmail.com  Wed May 18 00:03:55 2005
From: michele.simionato at gmail.com (Michele Simionato)
Date: 17 May 2005 21:03:55 -0700
Subject: Quick Reference from module doc strings.
In-Reply-To: <j6sie.28531$w15.2371@tornado.tampabay.rr.com>
References: <mailman.65.1116085574.29328.python-list@python.org>
	<1116199904.205240.58300@g49g2000cwa.googlegroups.com>
	<mailman.15.1116204313.8733.python-list@python.org>
	<42880d98$1@nntp0.pdx.net>
	<mailman.27.1116217027.8733.python-list@python.org>
	<1116320306.737808.313530@g44g2000cwa.googlegroups.com>
	<mailman.108.1116346297.8733.python-list@python.org>
	<1116349136.477233.205260@z14g2000cwz.googlegroups.com>
	<j6sie.28531$w15.2371@tornado.tampabay.rr.com>
Message-ID: <1116389035.309275.94580@o13g2000cwo.googlegroups.com>

Ron Adam:
> Thats part of what I'm trying to resolve, the doc strings a lot of
time
> isn't enough by itself or is missing. So I'm trying to build up a
> complete enough record so if there is no doc string, at least some
sense
> of what it is can be figured out without a lot browsing or looking at
> the source code.

I have a command line option so I can decide if I want to display only
the
documented objects or every object, including the ones without
docstring.
I could add an option to tell "minidoc" to interpret docstrings are
plain
text, not restructured text; however I don't want to do that (part of
the reason for "minidoc" is to force me to write good reST docstrings
in my own modules).

> Then to enable different searches by subject and keywords on these
> instead of by package or module.

Well,  my browser has a CTRL-F functionality ;)

> That's a nice format.  It took me a while before I realized the whole
> page *is* the output and not a part of it as I expected.

You should see how nice is the PDF when printed ;)

> Did you use the inspect module to get the class/function name and
args?

Yes, the inspect module is amazing.

> BTW, I presume you're aware that the "source links" on the web page
link
> to your computer and not to a file on the web site.  Just letting
know
> in case it was an over site.

Yes, I am aware of it, it was on purpose ;)

>Cheers,
>_Ron

>Ps... I like your physics link page. :)

That page is old, I am no more in physics, but I still have that
account for free
and I am lazy, so I am keeping it ;)

                                Michele Simionato



From ontiscal at tenup.com  Thu May  5 03:58:47 2005
From: ontiscal at tenup.com (ontiscal at tenup.com)
Date: 5 May 2005 00:58:47 -0700
Subject: Determine ip address
In-Reply-To: <1113570186.181016.249140@f14g2000cwb.googlegroups.com>
References: <1113570186.181016.249140@f14g2000cwb.googlegroups.com>
Message-ID: <1115279927.817969.121070@z14g2000cwz.googlegroups.com>

http://checkip.tk/

codecraig ha scritto:
> hi,
>    how can i use python to figure the ip address of the machine which
> the python script is running on?  I dont mean like 127.0.0.1....but i
> want the external IP address (such as ipconfig on windows displays).
> 
> any ideas??
> 
> THanks



From mrmaple at gmail.com  Sat May 21 15:49:32 2005
From: mrmaple at gmail.com (James Carroll)
Date: Sat, 21 May 2005 15:49:32 -0400
Subject: Running a python program during idle time only
In-Reply-To: <1116652981.803852@yasure>
References: <1116637560.499307.28700@o13g2000cwo.googlegroups.com>
	<86y8a9xj8x.fsf@guru.mired.org> <1116652981.803852@yasure>
Message-ID: <b273c74105052112497ca942c8@mail.gmail.com>

There's probably a way to tell how long the user has been idle, but here's
how you can check the CPU load to see if it's elevated... (of course
your program might elevate  it too.)

On linux, you can read from /proc/loadavg 

Here's a fun thing to try on windows...

make sure you have the win32all package installed...

import win32com.client
computer="."
query="select LoadPercentage from Win32_Processor where DeviceID = 'CPU0'"
objWMIService = win32com.client.Dispatch("WbemScripting.SWbemLocator")
objSWbemServices = objWMIService.ConnectServer(computer,"root\cimv2")
rows = objSWbemServices.ExecQuery(query)
print rows[0].LoadPercentage

import time

for count in xrange(4):
    print objSWbemServices.ExecQuery(query)[0].LoadPercentage
    time.sleep(1)

The microsoft docs on the info you can get on the processor is here:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/wmisdk/wmi/win32_processor.asp

If you run this from a shell like PyCrust, you won't see anything for
four seconds, and then it will all show up.

What are you using for the text indexing?  PyLucene???  

-Jim

On 5/21/05, Donn Cave <donn at drizzle.com> wrote:
> Quoth Mike Meyer <mwm at mired.org>:
> | "los" <carlos80 at gmail.com> writes:
> | > I'm trying to create a program similar to that of Google's desktop that
> | > will crawl through the hard drive and index files.  I have written the
> | > program and as of now I just put the thread to sleep for 1 second after
> | > indexing a couple of files.
> | >
> | > I'm wondering if anyone knows of a way that I could make so that the
> | > program will run at full speed only runs after the computer has been
> | > idle for a while.  I've looked at the "nice" command but that's not
> | > exactly what I want.
> |
> | On Unix, nice is exactly the answer. It's a lot more fine-grained than
> | what you're talking about, though. But it's the way things like
> | setiathome manage to run continuously without interfering with normal
> | usage.
> 
> Well, he could certainly try it if he hasn't already, but I wouldn't
> be too surprised if it really isn't exactly what he wants.  Maybe it
> depends on the scheduler, and maybe things have gotten a lot better
> in that department, but from my experience a process can be niced pretty
> hard and still tie up a lot of resources.  A disk crawler sounds like
> a good example.
> 
> I don't have any brilliant ideas, though.  Your suggestion to use
> os.getloadavg sounds good to me.  It might be kind of neat if there
> were some kind of APM ioctl that would register the calling process
> for notification of pending disk spin down, low power mode etc.
> 
>         Donn
> --
> http://mail.python.org/mailman/listinfo/python-list
> 
>


From gene.tani at gmail.com  Mon May 16 22:34:27 2005
From: gene.tani at gmail.com (gene.tani at gmail.com)
Date: 16 May 2005 19:34:27 -0700
Subject: Parsing text into dates?
In-Reply-To: <118il01fe2qgr76@news.supernews.com>
References: <1116277171.492587.38080@g47g2000cwa.googlegroups.com>
	<118il01fe2qgr76@news.supernews.com>
Message-ID: <1116297267.426430.172420@g44g2000cwa.googlegroups.com>

The beautiful brand new cookbook2 has "Fuzzy parsing of Dates" using
dateutil.parser, which you run once you have a decent guess at locale
(page 127 of cookbook)

John Roth wrote:
> "Thomas W" <thomas.weholt at gmail.com> wrote in message
> news:1116277171.492587.38080 at g47g2000cwa.googlegroups.com...
> > I'm developing a web-application where the user sometimes has to
enter
> > dates in plain text, allthough a format may be provided to give
clues.
> > On the server side this piece of text has to be parsed into a
datetime
> > python-object. Does anybody have any pointers on this?
> >
> > Besides the actual parsing, my main concern is the different locale
> > date formats and how to be able to parse those strange us-like
> > "month/day/year" compared to the clever and intuitive
european-style
> > "day/month/year" etc.
> >
> > I've searched google, but haven't found any good referances that
helped
> > me solve this problem, especially with regards to the locale date
> > format issues.
>
> There is no easy answer if you want to be able to enter three
> numbers. There are two answers that work, although there will
> be a lot of complaining. One is to use the international yyyy-mm-dd
> form, and the other is to accept a 4 digit year, an alphabetic month
> and a two digit day in any order.
>
> Otherwise, if you get 4 digits as the first component, and it passes
your
> validation (whatever that is) for reasonable years, you're probably
> pretty safe to assume that you've got yyyy-mm-dd. Otherwise
> if you can't get a clean answser (one is > 31, one is 12 < x < 32
> and one is <= 12, just give them a list of possibilities and politely
> suggest that they enter it as yyyy-mm-dd next time.
>
> I don't validate separators. As long as there is something that isn't
a
> number or a letter, it's a separator and which one doesn't matter. At
> times I've even taken the transition between a digit and a letter as
> a separator.
> 
> John  Roth
> 
> > Best regards,
> > Thomas
> >



From rune.strand at gmail.com  Thu May  5 06:44:16 2005
From: rune.strand at gmail.com (runes)
Date: 5 May 2005 03:44:16 -0700
Subject: using variables with modules
In-Reply-To: <1115288963.571659.22820@o13g2000cwo.googlegroups.com>
References: <1115285809.074451.171110@z14g2000cwz.googlegroups.com>
	<1115288963.571659.22820@o13g2000cwo.googlegroups.com>
Message-ID: <1115289856.244514.288070@z14g2000cwz.googlegroups.com>

I tested your code and made a few changes:

import _winreg
import sys

readfile = open("C:\scripts\ip.txt", 'r')
IPList = readfile.readlines()

for ClientIP in IPList:
    ClientIP = ClientIP.strip()
    ClientIP = r'\\' +  ClientIP
    try:
    	key = _winreg.ConnectRegistry(ClientIP,
_winreg.HKEY_LOCAL_MACHINE)
    except EnvironmentError:
    	sys.exit("EnvironmentError occured")
    hkey = _winreg.OpenKey(_winreg.HKEY_LOCAL_MACHINE,
                           "SOFTWARE\Microsoft\Windows
NT\CurrentVersion")
    OSver=_winreg.QueryValueEx( hkey, "ProductName")
    print OSver

print "Exiting Script"
sys.exit()

It gives the following output on my XP box when running it against a
ip.txt with two IP's, the firste being the box it self, the second a
non-domain 2003-server in the network:

(u'Microsoft Windows XP', 1)
EnvironmentError occured



From ajikoe at gmail.com  Mon May 23 05:02:43 2005
From: ajikoe at gmail.com (ajikoe at gmail.com)
Date: 23 May 2005 02:02:43 -0700
Subject: install python 2.4.1
In-Reply-To: <4290DCF2.1050509@v.loewis.de>
References: <1116758705.327764.33740@g14g2000cwa.googlegroups.com>
	<d6pot2$2rd$1@news5.zwoll1.ov.home.nl>
	<1116760610.227839.83110@o13g2000cwo.googlegroups.com>
	<4290DCF2.1050509@v.loewis.de>
Message-ID: <1116838963.355237.68480@g44g2000cwa.googlegroups.com>

Hello,

I installed python 2.4.1 at last.
I installed in two different computers all windows xp pro. I found the
installation size in add/remove software different in size is that
normal.

pujo



From ken.miller at entouch.net  Tue May 10 18:57:29 2005
From: ken.miller at entouch.net (Kenneth Miller)
Date: Tue, 10 May 2005 17:57:29 -0500
Subject: Python Graphing Utilities.
References: <-dadnS0X7IVccR3fRVn-uQ@entouch.net>
	<11823g4ph2kkp8b@corp.supernews.com>
Message-ID: <PdqdnRY8h7HcoRzfRVn-rw@entouch.net>

Ahh Thanks for the quick replies. I'm having a look through them now. What
would you consider the best for real time applications? The idea here is to
stream in the results from an A/D converter onto a 2d chart.

Regards,
Ken




From cs_gorton at hotmail.com  Tue May  3 10:02:36 2005
From: cs_gorton at hotmail.com (Chris Gorton)
Date: Tue, 03 May 2005 14:02:36 +0000
Subject: atexit not being executed
Message-ID: <BAY107-F36617C6982C24E265109DB8F180@phx.gbl>

I am currently writing some code within a Data Quality tool that allows for 
transforms to pass data records through what they call User Defined 
Transforms (This transforms allow access to all python functionality). It is 
currently using version 2.3

My problem is as follows:

I am calling an API and obtaining a thread id via the ctypes module, 
performing my required tasks then outputting the appended data as required. 
This then runs for every record within the file with the exception of 
re-initialising the DLL (This is only performed once to improve 
performance). Everything is working fine however I have no way of knowing 
when all of the data records have passed through the transform so that I can 
call the 'close' function supplied within the API. I tried looking through 
the documentation and came across atexit. I tried putting this into my code 
and it never seems to actually process the atexit.register(....) function 
thus leaving me stranded. My question is what might be the reason for this 
happening (The company support are not too helpful in this matter) and are 
there any other possible ways that I might be able to overcome this problem 
that I seem to have.




From ivanlan at pauahtun.org  Wed May 11 19:38:36 2005
From: ivanlan at pauahtun.org (Ivan Van Laningham)
Date: Wed, 11 May 2005 17:38:36 -0600
Subject: Python Documentation (should be better?)
References: <5C99C308457E6D4EA5448EA52A66004A675A6E@or.mxim.com>	<17026.26789.592527.975821@montanaro.dyndns.org>
	<mailman.398.1115843305.29826.python-list@python.org>
	<428276e8$0$318$626a14ce@news.free.fr>
Message-ID: <4282977C.A6676CDF@pauahtun.org>

Hi All--
Yes.  There are multiple ways I can correct myself, some, I'm sure,
involving chains and whips.  But you're all missing the point: 
Christopher is right!  Python docs are not as good as PHP docs.  Why
not?  Why do I have to be told "Hey, there are fifty ways to get what
you want!" when I should be able to go to the main doc page and SEE the
right link to click.  Why isn't there a "Methods in Standard Objects"
page, for instance?  Why would I have to search?

And the search is sucky, anyway.  So there;-)  Christopher described the
right way.  I should be able to type "string methods" into the text box,
push submit, and IT SHOULD HAND ME THE PAGE.  Not "Results 1 - 20 of
about 9,800 from www.python.org for string methods. (0.78 seconds)" (and
no, I am not exaggerating).  And the first hit is from Python 2.1.3, NOT
the current doc.  Sorry.  No cigar.

"There's Only One Way to Do It," except in the Docs, that is.  Good as
Google is, it is not good for a doc search.  We don't have a doc search,
we have a doc hurl.

BTW, my "tortured method" is quicker than Bruno's, because to use his
method I'd have to start the interactive interpreter.

Bruno Desthuilliers wrote:
> 
> Ivan Van Laningham a ?crit :
> > Hi All--
> > The Python docs are not ideal.  I can never remember, for instance,
> > where to find string methods (not methods in the string module, but
> > methods with ''),
> 
>  >>> dir('')

Metta,
Ivan
----------------------------------------------
Ivan Van Laningham
God N Locomotive Works
http://www.andi-holmes.com/
http://www.foretec.com/python/workshops/1998-11/proceedings.html
Army Signal Corps:  Cu Chi, Class of '70
Author:  Teach Yourself Python in 24 Hours


From could.net at gmail.com  Wed May  4 08:24:51 2005
From: could.net at gmail.com (could ildg)
Date: Wed, 4 May 2005 20:24:51 +0800
Subject: How to write this regular expression?
In-Reply-To: <maednQfrx_iwL-XfRVn-hA@powergate.ca>
References: <mailman.139.1115189526.6583.python-list@python.org>
	<maednQfrx_iwL-XfRVn-hA@powergate.ca>
Message-ID: <311b5ce1050504052445aa1382@mail.gmail.com>

Thank you. 

I just learned how to use re, so I want to find a way to settle it by
using re. I know that split it into pieces will do it quickly.

On 5/4/05, Peter Hansen <peter at engcorp.com> wrote:
> could ildg wrote:
> > I need a regular expression to check if a string matches it.
> 
> Why do you think you need a regular expression?
> 
> If another approach that involved no regular expressions worked much
> better, would you reject it for some reason?
> 
> -Peter
> --
> http://mail.python.org/mailman/listinfo/python-list
>


From dalke at dalkescientific.com  Tue May 10 13:36:25 2005
From: dalke at dalkescientific.com (Andrew Dalke)
Date: Tue, 10 May 2005 17:36:25 GMT
Subject: A Faster Way...
References: <mailman.297.1115744017.29826.python-list@python.org>
Message-ID: <pan.2005.05.10.17.36.26.151613@dalkescientific.com>

andrea.gavana wrote:
> If I simplify the problem, suppose I have 2 lists like:
> 
> a = range(10)
> b = range(20,30)
> 
> What I would like to have, is a "union" of the 2 list in a single tuple. In
> other words (Python words...):
> 
> c = (0, 20, 1, 21, 2, 22, 3, 23, 4, 24, 5, 25, .....

The 'yield' statement is very useful for this sort of thing as
well as the itertools module.  I thought the latter had something
for this already but I don't see it.  Here's an implementation

>>> import itertools
>>> def round_robin(*iterables):
...   iterables = map(iter, iterables)
...   for element in itertools.cycle(iterables):
...     yield element.next()
... 
>>> tuple(round_robin(range(10), range(20, 30)))
(0, 20, 1, 21, 2, 22, 3, 23, 4, 24, 5, 25, 6, 26, 7, 27, 8, 28, 9, 29)
>>> 

Don't know about the speed though.  Didn't have anything to
compare it took.  You mentioned you do a lot of string concatenation
Double checking; do you know that in Python it's faster to append
the new string elements to a list and only then do a single
string concatenation of the list elements?

That is, do

terms = []
for x in data:
   s = process_the_element(x)
   terms.append(s)

s = "".join(data)

rather than

# this is slow if there are many string concatenations
s = ""
for x in data:
  s = s + process_the_element(x)

				Andrew
				dalke at dalkescientific.com



From cfbolz at gmx.de  Tue May 24 15:11:59 2005
From: cfbolz at gmx.de (Carl Friedrich Bolz)
Date: Tue, 24 May 2005 21:11:59 +0200
Subject: first release of PyPy
In-Reply-To: <b322b4e605052411071a5c2606@mail.gmail.com>
References: <mailman.264.1116625088.8733.python-list@python.org>	<1116629407.638782.145950@g47g2000cwa.googlegroups.com>	<mailman.9.1116831944.18027.python-list@python.org>	<d6sn2f$18d$1@news.doit.wisc.edu>	<mailman.29.1116868886.18027.python-list@python.org>	<1116880764.260884.286720@g49g2000cwa.googlegroups.com>	<42934634.5060105@gmx.de>
	<b322b4e605052411071a5c2606@mail.gmail.com>
Message-ID: <42937C7F.2010706@gmx.de>

ionel wrote:
> so what could this PyPy do in the future ?  .. concretely ...
> hope this is not a stupid question
> 
Maybe the description from the homepage says it best:

The PyPy project aims at producing a flexible and fast Python 
implementation. The guiding idea is to translate a Python-level 
description of the Python language itself to lower level languages. 
Rumors have it that the secret goal is being faster-than-C which is 
nonsense, isn't it?


Regards,

Carl Friedrich


From philippe at philippecmartin.com  Thu May 26 16:09:00 2005
From: philippe at philippecmartin.com (Philippe C. Martin)
Date: Thu, 26 May 2005 20:09:00 GMT
Subject: Case Sensitive, Multiline Comments
References: <1117137316.140791.210430@g14g2000cwa.googlegroups.com>
Message-ID: <w1qle.4058$TJ2.2967@newssvr11.news.prodigy.com>

Hi,

A1: because some people find it very useful ? I know I do
A2: they exist: """

Regards,

Philippe




Elliot Temple wrote:

> Hi I have two questions.  Could someone explain to me why Python is
> case sensitive?  I find that annoying.  Also, why aren't there
> multiline comments?  Would adding them cause a problem of some sort?
> 
> Thanks,
> Elliot



From getvijay at gmail.com  Tue May 17 18:18:00 2005
From: getvijay at gmail.com (Vijay Kumar)
Date: Tue, 17 May 2005 16:18:00 -0600
Subject: how to get a function object from a frame object
Message-ID: <f4c94baa05051715185dfd4279@mail.gmail.com>

I have written a trace function and it recieves the current frame
object from the interpreter.
 
I want to know whether the event pertains to a class or method or function.

I can only get a code object from this frame object but not a function
object or class object.

Please post if any body have ideas.

Vijay


From timothy at open-networks.net  Tue May  3 17:37:25 2005
From: timothy at open-networks.net (Timothy Smith)
Date: Wed, 04 May 2005 07:37:25 +1000
Subject: py2exe and library.zip
In-Reply-To: <5uadnUTTqv6Iw-rfRVn-qw@powergate.ca>
References: <mailman.76.1115095357.6583.python-list@python.org>
	<5uadnUTTqv6Iw-rfRVn-qw@powergate.ca>
Message-ID: <4277EF15.2030605@open-networks.net>

Peter Hansen wrote:

>Timothy Smith wrote:
>  
>
>>is it possible instead of py2exe putting all library's in a zip file, to 
>>just put them in a sub dir?
>>    
>>
>
>Anything's possible.  Maybe you could explain what you're actually 
>trying to accomplish (or the reasons) so we can better understand where 
>you're going with this...
>
>-Peter
>  
>
exactly what i just stated, i don't want py2exe to zip up it's 
library's, but to put them in a sub dir.
the reason for this, is so that when users login and update from svn, 
they only have to download some tiny pyc files, not a great big zip file 
with everything in it ( 99% of which never changes)


From garyr at fidalgo.net  Mon May  2 22:22:34 2005
From: garyr at fidalgo.net (garyr at fidalgo.net)
Date: 2 May 2005 19:22:34 -0700
Subject: Mouseclick
References: <1e140f34.0505021030.9f615dc@posting.google.com>
Message-ID: <1115086954.592113.178370@z14g2000cwz.googlegroups.com>


Terje Johan Abrahamsen wrote:
> Hello.
>
> I have been trying desperately for a while to make Python push the
> left mousebutton. I have been able to let Python push a button in a
> box:
>
> def click(hwnd):
>     win32gui.SendMessage(hwnd, win32con.WM_LBUTTONDOWN, 0, 0)
>     win32gui.SendMessage(hwnd, win32con.WM_LBUTTONUP, 0, 0)
>
> optDialog = findTopWindow(wantedText="Options")
>
> def findAButtonCalledOK(hwnd, windowText, windowClass):
>     return windowClass == "Button" and windowText == "OK"
> okButton = findControl(optDialog, findAButtonCalledOK)
>
> click(okButton)
>
> As described here, http://tinyurl.com/cwjls. But, that is not what I
> am looking for. I would like to specify some coordinates such as
> windll.user32.SetCursorPos(450, 370) and thereafter click the left
> mousebutton at that place.
>
> I know that the sollution lies somewhere with Microsoft
> (http://www.6URL.com/FED), but cannot understand how to make Python
> click the button regardless of how much I try.
>
> Thanks in advance.


Another, perhaps not so cool, way of doing this is to just invoke the
mouse handler functions directly. e.g.:

class Event:
    def __init__(self, x, y):
        self.x = x
        self.y = y

class Whatever:
   .
   .
    def mouseClick(self, event):
        self.mouseDown(event)    # link to ButtonPress handler
        self.mouseUp(event)      # link to ButtonRelease handler

   ...
   event.x, event.y = 123, 456
   self.mouseClick(event)



From blake.garretson at gmail.com  Thu May  5 16:20:11 2005
From: blake.garretson at gmail.com (Blake T. Garretson)
Date: 5 May 2005 13:20:11 -0700
Subject: Encryption with Python?
Message-ID: <1115324411.952821.150780@o13g2000cwo.googlegroups.com>

I want to save some sensitive data (passwords, PIN numbers, etc.) to
disk in a secure manner in one of my programs.  What is the
easiest/best way to accomplish strong file encryption in Python?  Any
modern block cipher will do: AES, Blowfish, etc.  I'm not looking for
public key stuff; I just want to provide a pass-phrase.

I found a few modules out there, but they seem to be all but abandoned.
 Most seem to have died several years ago.  The most promising package
is A.M. Kuchling's Python Cryptography Toolkit
(http://www.amk.ca/python/code/crypto.html).

Is this the defacto Python encryption solution?  What does everyone
else use?  Any other suggestions?  The SSLCrypto package
(http://www.freenet.org.nz/python/SSLCrypto/) may be a good alternative
too, but I am not sure if it is actively maintained.

Thanks,
Blake



From steven.bethard at gmail.com  Sun May 29 16:32:14 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Sun, 29 May 2005 14:32:14 -0600
Subject: finding indices in a sequence of parentheses
Message-ID: <u_KdneJ4tt9QuwffRVn-tg@comcast.com>

I have a list of strings that looks something like:

lst = ['0', '0', '(*)', 'O', '(*', '*', '(*', '*))', '((*', '*)', '*)']

The parentheses in the labels indicate where an "annotation" starts and 
ends.  So for example, the label '(*)' at index 2 of the list means that 
I have an annotation at (2, 2), and the labels '(*', '*', '(*', '*))' at 
indices 4 through 7 mean that I have an annotation at (4, 7) and an 
annotation at (6, 7).

I'd like to determine all indices at which I have an annotation.  So for 
the data above, I want the indices:

     (2, 2), (4, 7), (6, 7), (8, 9) and (8, 10)

Here's what I'm doing now:

py> def indices(lst):
...     stack = []
...     for i, s in enumerate(lst):
...         if s == 'O':
...             continue
...         stack.extend([i]*s.count('('))
...         if '*' in s and not stack:
...             raise Exception('No start for %r at %i' % (s, i))
...         for _ in range(s.count(')')):
...             try:
...                 yield stack.pop(), i
...             except IndexError:
...                 raise Exception('No start for %r at %i' % (s, i))
...     if stack:
...         raise Exception('No ends for starts at %r' % stack)
...
py> list(indices(['0', '0', '(*)', 'O', '(*', '*', '(*', '*))', '((*', 
'*)', '*)', '0']))
[(2, 2), (6, 7), (4, 7), (8, 9), (8, 10)]

I think that works right, but I'm not certain.  So two questions:

(1) Can anyone see anything wrong with the code above? and
(2) Does anyone see an easier/clearer/simpler[1] way of doing this?

Thanks,

STeVe

[1] Yes, I know easier/clearer/simpler are subjective terms.  It's okay, 
I'm only looking for opinions here anyway. =)


From kristian.zoerhoff at gmail.com  Tue May  3 15:04:44 2005
From: kristian.zoerhoff at gmail.com (Kristian Zoerhoff)
Date: Tue, 3 May 2005 14:04:44 -0500
Subject: trouble with lists
In-Reply-To: <000801c5500a$73e771d0$437c41db@DandI>
References: <1115142163.472256.205930@o13g2000cwo.googlegroups.com>
	<3511dc750505031054516bab32@mail.gmail.com>
	<000801c5500a$73e771d0$437c41db@DandI>
Message-ID: <3511dc7505050312043fcee71d@mail.gmail.com>

On 5/3/05, Anand Kumar <anandr86 at gmail.com> wrote:
> 
> I am actually trying to mimic a multi dimensional array in C.
> I tried doing things like

Python lists are not arrays in that sense. If you really want an
array, you probably want Numeric or Numarray. Head over to
http://numeric.scipy.org/ to take a look.

-- 
Kristian

kristian.zoerhoff(AT)gmail.com
zoerhoff(AT)freeshell.org


From pajo at pajo.com  Tue May  3 06:53:41 2005
From: pajo at pajo.com (Pajo)
Date: Tue, 03 May 2005 12:53:41 +0200
Subject: Python & SQLite
In-Reply-To: <mailman.86.1115114086.6583.python-list@python.org>
References: <d57g8v$n4c$1@sunce.iskon.hr>
	<mailman.86.1115114086.6583.python-list@python.org>
Message-ID: <d57l7f$uta$1@sunce.iskon.hr>

Thnx, my first test app with sqlite is working...


From "myname" at example.invalid  Sat May 28 17:22:00 2005
From: "myname" at example.invalid (VK)
Date: Sat, 28 May 2005 23:22:00 +0200
Subject: Getting value of radiobutton trouble
In-Reply-To: <%35me.194$Dq7.159@newssvr11.news.prodigy.com>
References: <3fs17rF9b8edU1@news.dfncis.de>
	<%35me.194$Dq7.159@newssvr11.news.prodigy.com>
Message-ID: <3fs5ogF9e2e7U1@news.dfncis.de>

Philippe C. Martin wrote:
> Hi, 
> 
> I think your second call to Tk() does it: this works although the look is
> different:
> 
> 
> from Tkinter import *
> class GetVariant:
>      def __init__(self):
>          self.root = Tk()
>          self.mainframe = Frame(self.root,bg="yellow")
>          self.mainframe.pack(fill=BOTH,expand=1)
> 
>          self.firstframe = Frame(self.mainframe,bg="red")
>          self.firstframe.pack(side=BOTTOM,expand=1)
> 
>          global v
>          v = StringVar()
>          self.radiobutton = Radiobutton(self.firstframe,text= "Variant 
> 1", variable=v, value="Variant 1")
>          self.radiobutton.pack(side=TOP,anchor=W)
>          self.radiobutton.select()
>          self.radiobutton = Radiobutton(self.firstframe,text= "Variant 
> 2", variable=v, value="Variant 2")
>          self.radiobutton.pack(side=TOP,anchor=W)
>          self.radiobutton = Radiobutton(self.firstframe,text= "Variant 
> 3", variable=v, value="Variant 3")
>          self.radiobutton.pack(side=TOP,anchor=W)
> 
> 
> 
>          self.secondframe = Frame(self.mainframe,bg="blue")
>          self.secondframe.pack()
>          self.var = Button(self.secondframe,text="What 
> Variant",command=self.call)
>          self.var.pack(expand=1,side=BOTTOM)
> 
> 
> 
>      def call(self):
>          self.variant = v.get()
>          print 'Input => "%s"' % self.variant
> 
> class OneButton:
>          def __init__(self):
>              self.root = Tk()
>              Button(self.root,text="click me",command=self.getvar).pack()
>          def getvar(self):
>              a=GetVariant()
> 
> d = OneButton()
> d.root.mainloop()
> 
> 
> 
> 
> VK wrote:
> 
> 
>>Hi!
>>What I'm missing in following code? Cannot get the values of
>>radiobuttons. Starting only one class (GetVariant), it works. When I put
>>two classes together, it doesn't.
>>Regards, VK
>>
>>from Tkinter import *
>>class GetVariant:
>>     def __init__(self):
>>         self.root = Tk()
>>         self.mainframe = Frame(self.root,bg="yellow")
>>         self.mainframe.pack(fill=BOTH,expand=1)
>>
>>         self.firstframe = Frame(self.mainframe,bg="red")
>>         self.firstframe.pack(side=BOTTOM,expand=1)
>>
>>         global v
>>         v = StringVar()
>>         self.radiobutton = Radiobutton(self.firstframe,text= "Variant
>>1", variable=v, value="Variant 1")
>>         self.radiobutton.pack(side=TOP,anchor=W)
>>         self.radiobutton.select()
>>         self.radiobutton = Radiobutton(self.firstframe,text= "Variant
>>2", variable=v, value="Variant 2")
>>         self.radiobutton.pack(side=TOP,anchor=W)
>>         self.radiobutton = Radiobutton(self.firstframe,text= "Variant
>>3", variable=v, value="Variant 3")
>>         self.radiobutton.pack(side=TOP,anchor=W)
>>
>>
>>
>>         self.secondframe = Frame(self.mainframe,bg="blue")
>>         self.secondframe.pack()
>>         self.var = Button(self.secondframe,text="What
>>Variant",command=self.call)
>>         self.var.pack(expand=1,side=BOTTOM)
>>
>>
>>
>>     def call(self):
>>         self.variant = v.get()
>>         print 'Input => "%s"' % self.variant
>>
>>class OneButton:
>>         def __init__(self):
>>             self.root = Tk()
>>             Button(self.root,text="click me",command=self.getvar).pack()
>>         def getvar(self):
>>             a=GetVariant()
>>
>>d = OneButton()
>>d.root.mainloop()
> 
> 

Sorry, but I don't get it. There is no deference between my code and 
your answer. I'm beginner...


From megahrtz at gte.net  Tue May 10 13:57:47 2005
From: megahrtz at gte.net (Alex Nordhus)
Date: Tue, 10 May 2005 12:57:47 -0500
Subject: Need a little parse help
Message-ID: <000901c55589$c6597880$6400a8c0@grondor>


Im trying to grab a colum of data from a text file and write it to a new
file.
I am having trouble getting It to write the data to newlines. Python is
making it one
Long string without any spaces when it writes the file. The first
character is capitalized in colum 2.
I am trying to grab the 2nd colum in the file.

import sys, string

inputfilenames, outputfilename = sys.argv[1:-1], sys.argv[-1]

for inputfilename in inputfilenames:

    inputfile = open(inputfilename,'r')
    outputfile = open(outputfilename, "w")
    for ln in inputfile.readlines():
        words = string.split(ln)
        if len(words) >= 2:
#	    print (words[1])
  	    outputfile.write(words[1])

When I use just print it prints out fine. Each on a dffrent line just
the way I want it. But writing the file its all on one line. How do I
get the data to goto new lines in the new file?


Alex Nordhus
Copy and Paste !
http://www.pasteaway.com



From curi at curi.us  Sat May 28 18:16:20 2005
From: curi at curi.us (Elliot Temple)
Date: Sat, 28 May 2005 15:16:20 -0700
Subject: String manipulations
In-Reply-To: <1117317133.919080.325250@g14g2000cwa.googlegroups.com>
References: <1117316427.826830.189260@g14g2000cwa.googlegroups.com>
	<MB5me.3507$4N2.3160@newssvr30.news.prodigy.com>
	<1117317133.919080.325250@g14g2000cwa.googlegroups.com>
Message-ID: <107A897D-43FD-463A-838D-E332E179A8AB@curi.us>


On May 28, 2005, at 2:52 PM, Lorn wrote:

> Yes, that would get rid of the decimals... but it wouldn't get rid of
> the extraneous precision. Unfortunately, the precision out to the ten
> thousandth is noise... I don't need to round it either as the numbers
> are artifacts of an integer to float conversion. Basically, I need to
> know how many decimal places there are and then make the necessary
> deletions before I can normalize by adding zeros, multiplying, etc.
>
> Thanks for your suggestion, though.

for s in numbers:
     decimal_index = s.find('.')
     decimal_places = len(s) - decimal_index - 1

Anything wrong with this?  (it will mess up if there isn't a decimal  
but you can fix that if you want)

-- Elliot Temple
http://www.curi.us/


---
[This E-mail scanned for viruses by Declude Virus]



From ajsiegel at optonline.com  Mon May 30 18:25:54 2005
From: ajsiegel at optonline.com (Arthur)
Date: Mon, 30 May 2005 18:25:54 -0400
Subject: Case Sensitive, Multiline Comments
References: <1117137316.140791.210430@g14g2000cwa.googlegroups.com>
	<z5adnQMsOLiL7AffRVn-hQ@comcast.com>
	<mailman.256.1117477669.18027.python-list@python.org>
Message-ID: <f74n9191drhn27kr6rm4p6kb6di42blthk@4ax.com>

On Mon, 30 May 2005 14:24:54 -0400, "Terry Reedy" <tjreedy at udel.edu>
wrote:

>
>"D H" <a at b.c> wrote in message news:z5adnQMsOLiL7AffRVn-hQ at comcast.com...
>> Elliot Temple wrote:
>>> Hi I have two questions.  Could someone explain to me why Python is
>>> case sensitive?  I find that annoying.
>>
>> I do too.
>
>I don't.
>
>>  As you've found, the only reason is because it is,
>
>False.  As someone else already pointed out in this thread, and as some 
>said years ago when Guido brought up the subject, standard math notation 
>*is* case sensitive and some people like Python because they can directly 
>translate math expressions into Python expressions.

False.

In the sense that it is the way it is only because Guido kept it the
way it is, but he did so without acknowledging that your argument or
anyone else's argument was in the least bit pursuasive to him.

>I am annoyed by the disinformation and slander ('anti-newbie') repeated 
>indefinitely by some case-folding advocates.  Difference annoyances for 
>different folks, I guess.

I am annoyed that Guido skated while those of us vocally annoyed that
Guido could be influenced into this substanceless "newbie" issue, and
influence so many others to contemplate it with such solemnity - did
not skate as well.

Art 



From mwm at mired.org  Mon May  9 21:00:18 2005
From: mwm at mired.org (Mike Meyer)
Date: Mon, 09 May 2005 20:00:18 -0500
Subject: Advice needed on __del__
References: <d5o1s1$8h3$1@sea.gmane.org> <d5obmp$cqh$1@sea.gmane.org>
	<mailman.226.1115667160.29826.python-list@python.org>
Message-ID: <86psvzrj31.fsf@guru.mired.org>

phil <phillip.watts at anvilcom.com> writes:

> By the way, I understand that __del__ is only called when the last
> reference to an instance is deled.  That's fine, if consistent.

Actually, __del__ is called when the instance is garbage
collected. Exactly when that is is implementation dependent. In the
implementation you happen to be using, it'll happen when the last
reference is deleted. But depending on this makes your code less
portable.

        <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From p at ulmcnett.com  Mon May 23 13:40:35 2005
From: p at ulmcnett.com (Paul McNett)
Date: Mon, 23 May 2005 10:40:35 -0700
Subject: execution error
In-Reply-To: <3fehq6F7flfgU1@individual.net>
References: <3fehq6F7flfgU1@individual.net>
Message-ID: <42921593.5000600@ulmcnett.com>

Ximo wrote:
> Hello, I'm programing an advanced calculator, and I have many problems with 
> the execution errors, specually with the division by 0.
> 
> And my question is how can show the execution error whitout exit of the 
> program, showing it in the error output as


Wrap the math in a try/except block such as:

# Handle the zero-division plus maybe some others:
exceptions_to_handle = (ZeroDivisionError,)

try:
	# do the math here
	result = eval(my_math)
except exceptions_to_handle, e:
	# gracefully handle here
	result = str(e)
# show the result in the calculator here
print result

... or something like that. The point is you need to handle the zero 
division error while not handling other, unexpected error conditions.



-- 
pkm ~ http://paulmcnett.com



From skip at pobox.com  Sun May  1 14:32:24 2005
From: skip at pobox.com (Skip Montanaro)
Date: Sun, 1 May 2005 13:32:24 -0500
Subject: How to kill a SocketServer?
In-Reply-To: <7xwtqj1lh1.fsf@ruckus.brouhaha.com>
References: <7xwtqj1lh1.fsf@ruckus.brouhaha.com>
Message-ID: <17013.8376.717193.17215@montanaro.dyndns.org>


    Paul> Let's say you have a SocketServer with the threading mix-in and
    Paul> you run serve_forever on it.  How can you shut it down, or rather,
    Paul> how can it even shut itself down?  Even if you use a
    Paul> handle_request loop instead of serve_forever, it still seems
    Paul> difficult:

    Paul>      class myserver(ThreadingMixIn, TCPServer): pass
    Paul>      server = myserver(...)
    Paul>      server.shutdown = False
    Paul>      while not server.shutdown:
    Paul>          server.handle_request()

    Paul> Some code in the request handler eventually sets server.shutdown
    Paul> to True (say on receiving a "shutdown" command from the client),
    Paul> but by then the main thread is already blocked waiting for another
    Paul> connection.

I use precisely that scheme with (I think *) no problem.  The only maybe
significant difference I see is that I subclass ThreadingMixin so that it
creates daemon threads:

    class DaemonThreadMixIn(SocketServer.ThreadingMixIn):
        def process_request_thread(self, request, client_address):
            try:
                self.finish_request(request, client_address)
                self.close_request(request)
            except:
                self.handle_error(request, client_address)
                self.close_request(request)

        def process_request(self, request, client_address):
            t = threading.Thread(target = self.process_request_thread,
                                 args = (request, client_address))
            t.setDaemon(1)
            t.start()

    class GenericServer(DaemonThreadMixIn, SocketServer.TCPServer):
        ...

Skip

(*) Maybe my XML-RPC server actually accepts one more connection after I set
server.shutdown to True before it actually exits.  I'll have to take a look
at that.


From bronger at physik.rwth-aachen.de  Wed May 11 10:23:39 2005
From: bronger at physik.rwth-aachen.de (Torsten Bronger)
Date: Wed, 11 May 2005 16:23:39 +0200
Subject: Python Graphing Utilities.
References: <-dadnS0X7IVccR3fRVn-uQ@entouch.net>
	<797fe3d405051010392c00011f@mail.gmail.com>
	<mailman.320.1115772826.29826.python-list@python.org>
	<87psvycqej.fsf@wilson.rwth-aachen.de>
	<mailman.340.1115812092.29826.python-list@python.org>
	<87mzr2f01r.fsf@wilson.rwth-aachen.de>
	<797fe3d4050511061258bb8302@mail.gmail.com>
	<mailman.355.1115818069.29826.python-list@python.org>
Message-ID: <87is1pg7tg.fsf@wilson.rwth-aachen.de>

Hall?chen!

Robert Kern <rkern at ucsd.edu> writes:

> [...]
>
> A pslatex backend certainly would be interesting. A Gnuplot
> backend would probably not be feasible. Does it expose its raw
> drawing operations?

Probably not raw enough, but I don't know how basic matplotlib
wants it to be.  You could switch the axes off and draw everything
as lines using plot coordinates, but I don't know how sensible this
would be.

On the other hand, the "pslatex" output of Gnuplot is one of the
very few things that hold me there.  If matplotlib produced
something equivalent, (at least) I wouldn't call for a Gnuplot
backend anymore.

Tsch?,
Torsten.

-- 
Torsten Bronger, aquisgrana, europa vetus


From rschroev_nospam_ml at fastmail.fm  Wed May  4 18:19:56 2005
From: rschroev_nospam_ml at fastmail.fm (Roel Schroeven)
Date: Wed, 04 May 2005 22:19:56 GMT
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <mailman.21.1115244754.29826.python-list@python.org>
References: <d4u60o$akh$1@news2.netvision.net.il>	<mailman.47.1114818531.14961.python-list@python.org>	<1114924100.296223.114020@g14g2000cwa.googlegroups.com>	<1114927892.321086.60190@z14g2000cwz.googlegroups.com>	<zX%ce.78213$ft1.5056576@phobos.telenet-ops.be>	<Zj2de.78345$a42.5091422@phobos.telenet-ops.be>	<8764y29x3m.fsf@uwo.ca>	<877jihc7qv.fsf@uwo.ca>
	<4279366B.6070800@zopatista.com>
	<mailman.21.1115244754.29826.python-list@python.org>
Message-ID: <gUbee.81443$bB2.5263451@phobos.telenet-ops.be>

Michael Spencer wrote:

> Martijn Pieters wrote:
> 
>>Dan Christensen wrote:
>>
>>
>>>Any hints for level 13?  I know how to make a call, but don't know "who"
>>>to call.
>>
>>
>>I haven't figured this one out yet either. Rather frustrating really.
>>All the hints I've been given so far is to rmember the solution for
>>level 12.
>>
>>Banging-my-head-against-it-didn't-help-either-ly yours,
>>
>>Martijn Pieters
>>
> 
> Same here.  BTW I was unable to open one of the objects created in level 12.  It 
> didn't stop me guessing the answer based on the others, but now I wonder whether 
> I might need the missing piece for level 13.  Anyone else encounter this?

Indeed, there is one I could not open properly. One tool I tried gave a 
warning and an incorrect image, another one showed a cropped image of 
what I suppose should have been the real image.
I tried some variations to get an uncorrupted object, but didn't succeed.

However, I didn't need it for solving level 13.




When all else fails, try Google. It helped me, in any case.

-- 
If I have been able to see further, it was only because I stood
on the shoulders of giants.  -- Isaac Newton

Roel Schroeven


From peter at engcorp.com  Mon May 30 08:44:41 2005
From: peter at engcorp.com (Peter Hansen)
Date: Mon, 30 May 2005 08:44:41 -0400
Subject: Monitoring Outgoing Connections?
In-Reply-To: <igvme.305$li.14@tornado.rdc-kc.rr.com>
References: <igvme.305$li.14@tornado.rdc-kc.rr.com>
Message-ID: <ga-dnVJ2V4h1lwbfRVn-2w@powergate.ca>

Joseph Chase wrote:
> Is it possible to write a client within Python that would trigger some sort 
> of callback interface when the user is attempting to make an outgoing TCP/IP 
> connection?  I'd like to accomplish this on a Windows XP box.
> 
> Is this something that could be accomplished with the Twisted framework, or 
> am I going to have to dive in the platform specific API?

AFAIK, there is no cross-platform way of doing anything resembling that, 
so you will have to do the dive...

-Peter


From jstroud at mbi.ucla.edu  Tue May 24 18:47:49 2005
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Tue, 24 May 2005 15:47:49 -0700
Subject: Tkinter Text Question
Message-ID: <200505241547.49091.jstroud@mbi.ucla.edu>

Hello All,

I would like to get the index of the character closest to the pointer in a 
Text, something like Canvas.find_closest(). I want it to bind to '<Motion>'. 
Does anybody know how this might be done?

Thank you,

James

--
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From peter at engcorp.com  Mon May 23 11:18:10 2005
From: peter at engcorp.com (Peter Hansen)
Date: Mon, 23 May 2005 11:18:10 -0400
Subject: None module reference
In-Reply-To: <V%Sje.7552$Wp.922649@news20.bellglobal.com>
References: <V%Sje.7552$Wp.922649@news20.bellglobal.com>
Message-ID: <V9ydnVc0dsnaaQzfRVn-oA@powergate.ca>

Stefan Seefeld wrote:
> In a python module of mine I import system modules
> ('sys', say) and then use them from within some functions.
> 
> However, during program termination I'm calling
> one such function and the module reference ('sys')
> is 'None' !

Are you running any daemon threads?  This can generally happen when a 
daemon thread continues to access module globals during the interpreter 
shutdown sequence.  At one stage all globals in all modules are rebound 
to None, and there's a chance some of your daemon thread code will 
execute just as this is occurring, resulting in that kind of error message.

-Peter


From jabel at plus.net  Fri May 27 03:51:15 2005
From: jabel at plus.net (John Abel)
Date: Fri, 27 May 2005 08:51:15 +0100
Subject: More Rewrite Request Within SocketServer?
In-Reply-To: <7xr7ftkt91.fsf@ruckus.brouhaha.com>
References: <mailman.163.1117179489.18027.python-list@python.org>
	<7xr7ftkt91.fsf@ruckus.brouhaha.com>
Message-ID: <4296D173.9080106@plus.net>

Paul Rubin wrote:

>John Abel <jabel at plus.net> writes:
>  
>
>>OK, I'm guessing what I was after ( see below ) isn't possible.  Does
>>anyone know of an easy way of having verify_request inform the request
>>handler of certain events, say client is unauthorised?  I thought of
>>having it set a flag, and referring to it from the handler class (
>>self.server.hostAllowed for example ), but that wouldn't work quite
>>right in a threaded server.
>>    
>>
>
>I'd think you could do that.  Isn't the new thread already started
>when the verify method runs?
>  
>
Unfortunately not.  verify_request is called before process_request 
which launches the thread ( in the ThreadingMixIn version ).  Unless I 
passed the flag as an argument to the thread, and then had it reset.  
Hmmmmm, worth thinking about,

J


From tgm2tothe10thpower at replacetextwithnumber.hotmail.com  Tue May 24 11:55:30 2005
From: tgm2tothe10thpower at replacetextwithnumber.hotmail.com (Thomas G. Marshall)
Date: Tue, 24 May 2005 15:55:30 GMT
Subject: What are OOP's Jargons and Complexities?
References: <1116843761.619249.144790@g47g2000cwa.googlegroups.com>
	<bAske.14563$yx.14338@fe08.lga> <1779523.9sBn8HKUcY@yahoo.com>
	<zYFke.46627$HJ2.44911@fe11.lga>
Message-ID: <S7Ike.935$2b.513@trndny08>

John W. Kennedy coughed up:
> alex goldman wrote:
>> John W. Kennedy wrote:
>>
>>
>>> Strong
>>> typing has been a feature of mainstream programming languages since
>>> the late 1950's.
>>
>>
>> Is Fortran a strongly typed language? I don't think so. Strong
>> typing has been invented in the 70's, if I'm not mistaken, when ML
>> was invented, but strong typing has never been mainstream.
>
> I begin to believe that I have been reading naughty references, and
> that I should rather have said "statically typed".
>
> I am not familiar with modern Fortran. Surely it at least has argument
> prototyping by now?


There are some fortran advocates that pop into here now and again.  Frankly, 
I'm spooked by how far fortran seems to have come.  There is even OO support 
now.  OI.

I preferred the old days of thinking that fortran sucked "just 'cause".  :)


-- 
Enough is enough.  It is /not/ a requirement that someone must google
relentlessly for an answer before posting in usenet.  Newsgroups are
for discussions.  Discussions do /not/ necessitate prior research.  If
you are bothered by someone asking a question without taking time to
look something up, simply do not respond.




From peter at engcorp.com  Thu May 19 09:23:33 2005
From: peter at engcorp.com (Peter Hansen)
Date: Thu, 19 May 2005 09:23:33 -0400
Subject: Python forum
In-Reply-To: <mailman.149.1116427615.8733.python-list@python.org>
References: <mailman.84.1116320178.8733.python-list@python.org>	<pan.2005.05.17.10.38.09.537008@gmx.at>	<428B1803.80509@softhome.net>	<17035.17855.129397.462296@montanaro.dyndns.org>	<d6fh1f$cqo$1@sea.gmane.org>
	<mailman.149.1116427615.8733.python-list@python.org>
Message-ID: <d5udneWdj5rADhHfRVn-iQ@powergate.ca>

Ivan Van Laningham wrote:
> Robert Kern wrote:
>>dict.org says _forums_. I used _fora_, but I'm silly.
>>
> It also says "appendixes" and "indexes" are OK.  Yahoos.

Should that be "Yaha"?


From http  Thu May 12 15:30:57 2005
From: http (Paul Rubin)
Date: 12 May 2005 12:30:57 -0700
Subject: pyvm -- faster python
References: <mailman.164.1115548611.29826.python-list@python.org>
	<1115561483.741761.212140@f14g2000cwb.googlegroups.com>
	<m102l2-9qr.ln1@home.rogerbinns.com>
	<mailman.264.1115716603.29826.python-list@python.org>
	<vu38l2-k5v.ln1@home.rogerbinns.com>
	<7xvf5qbir1.fsf@ruckus.brouhaha.com>
	<nt98l2-1e.ln1@home.rogerbinns.com>
	<7xpsvymlse.fsf@ruckus.brouhaha.com>
	<1115791624.856252.247890@z14g2000cwz.googlegroups.com>
	<7x1x8el18e.fsf@ruckus.brouhaha.com>
	<3eg2vnF2psplU1@individual.net>
	<7xis1pqdt0.fsf@ruckus.brouhaha.com>
	<pan.2005.05.12.15.53.10.176970@dalkescientific.com>
Message-ID: <7xbr7g8cni.fsf@ruckus.brouhaha.com>

Andrew Dalke <dalke at dalkescientific.com> writes:

> Years ago, presented at one of the Python conferences, was a program
> to generate C code from the byte code....  The conclusion I recall
> was that it wasn't faster - at best a few percent - and there was a
> big memory hit because of all the duplicated code.  One thought was
> that the cache miss caused some of the performance problems.  Does
> that count as a compiler?

I would say it counts as a compiler and that other languages have
used a similar compilation approach and gotten much better speedups.
For example, Java JIT compilers.  The DEC Scheme-to-C translator
and Kyoto Common Lisp also produced C output from their compilers
and got really significant speedups.  Part of the problem may be
with the actual Python language.  One of the reasons for wanting
real compilation as a high priority, is that the presence of a
compiler will affect future evolution of the language, in a way
that makes it more conducive to compilation.

Despite the shrieks of the "Python is not Lisp!" crowd, Python
semantics and Lisp semantics aren't THAT different, and yet compiled
Lisp implementations com completely beat the pants off of interpreted
Python in terms of performance.  I don't think Python can ever beat
carefully coded C for running speed, but it can and should aim for
parity with compiled Lisp.


From jepler at unpythonic.net  Mon May 16 15:17:12 2005
From: jepler at unpythonic.net (Jeff Epler)
Date: Mon, 16 May 2005 14:17:12 -0500
Subject: Recommended version of gcc for Python?
In-Reply-To: <7P5ie.18072$J12.7334@newssvr14.news.prodigy.com>
References: <7P5ie.18072$J12.7334@newssvr14.news.prodigy.com>
Message-ID: <20050516191708.GA28490@unpythonic.net>

Most versions of gcc should be just fine to compile Python.  Python is
targeted at ANSI/ISO C compilers, but does not yet use any C99 features.

I don't think there was ever such a thing as "gcc 3.5";
http://gcc.gnu.org/ lists 4.0 as the "current release series" and 3.4.3
as the "previous release series".  I'd steer clear of this version.

I recommend using the default compiler of your distribution, unless you
know of a specific reason to use a different one.

Jeff
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From maxm at mxm.dk  Tue May  3 18:01:04 2005
From: maxm at mxm.dk (Max M)
Date: Wed, 04 May 2005 00:01:04 +0200
Subject: [Plone] DTML instead of ZPT for PHPParse
In-Reply-To: <rowp5j8jsso1$.dvtd6zau36vj.dlg@40tude.net>
References: <rowp5j8jsso1$.dvtd6zau36vj.dlg@40tude.net>
Message-ID: <4277f3eb$0$268$edfadb0f@dread12.news.tele.dk>

JZ wrote:
> Who knows how to add to Plone the following content using DTML instead of
> ZPT template?
> 
> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US"
>   lang="en-US" i18n:domain="plone"
>   metal:use-macro="here/main_template/macros/master">
>   <body>
>     <div metal:fill-slot="main">
>         
> 	HERE IS MY DYNAMIC PHP: <?php phpinfo();?>
> 
>     </div>
>   </body>
> </html>
> 
> I need to use DTML instead of ZPT because PHPParse product cannot work with
> ZPT. :( 


Just an idea, cant you put the PHP into a dtml method that you then call 
from zpt?

-- 

hilsen/regards Max M, Denmark

http://www.mxm.dk/
IT's Mad Science


From sjmachin at lexicon.net  Mon May 30 15:02:26 2005
From: sjmachin at lexicon.net (John Machin)
Date: Tue, 31 May 2005 05:02:26 +1000
Subject: Unicode Congruence
In-Reply-To: <mailman.255.1117477447.18027.python-list@python.org>
References: <mailman.255.1117477447.18027.python-list@python.org>
Message-ID: <429B6342.6040607@lexicon.net>

phil wrote:
> I can't find,

Having looked where?

> anyone know the unicode symbol
> CONGRUENT.
> either tilde over equal or triple
> tidde would do.
> Thanks.
> 

Go to

http://www.unicode.org

click on:
  	  Where is my Character?

follow your nose till you get to:

http://www.unicode.org/charts/symbols.html

What you need is:

http://www.unicode.org/charts/PDF/U2200.pdf


From gabor at nekomancer.net  Mon May 30 05:12:57 2005
From: gabor at nekomancer.net (gabor)
Date: Mon, 30 May 2005 11:12:57 +0200
Subject: write to the same file from multiple processes at the same time?
In-Reply-To: <mailman.207.1117233035.18027.python-list@python.org>
References: <mailman.207.1117233035.18027.python-list@python.org>
Message-ID: <b4df2$429ad977$3eb01f24$10471@news.flashnewsgroups.com>

Jp Calderone wrote:
> To briefly re-summarize, when you 
> want to acquire a lock, attempt to create a directory with a well-known 
> name.  When you are done with it, delete the directory.  This works 
> across all platforms and filesystems likely to be encountered by a 
> Python program.

thanks...

but the problem now is that the cgi will have to wait for that directory 
  to be gone, when he is invoked.. and i do not want to code that :)
i'm too lazy..

so basically i want the code to TRY to write to the file, and WAIT if it 
  is opened for write right now...

something like a mutex-synchronized block of the code...

gabor


From __peter__ at web.de  Thu May 19 15:47:11 2005
From: __peter__ at web.de (Peter Otten)
Date: Thu, 19 May 2005 21:47:11 +0200
Subject: Convert from numbers to letters
References: <1116511005.900715.107260@o13g2000cwo.googlegroups.com>
	<mailman.209.1116513780.8733.python-list@python.org>
	<1116528750.285895.27720@f14g2000cwb.googlegroups.com>
	<mailman.223.1116529228.8733.python-list@python.org>
	<1116530403.328825.216120@z14g2000cwz.googlegroups.com>
	<mailman.225.1116531601.8733.python-list@python.org>
Message-ID: <d6iqe5$rgt$01$1@news.t-online.com>

Bill Mill wrote:

>> Traceback (most recent call last):
>>File?"<stdin>",?line?1,?in??
>> NameError: name 'sorted' is not defined
>> 
>> I think you're probably using 2.4 ??
> 
> Yes, sorted() is new in python 2.4 .You could use a very lightly
> tested pure-python partial replacement:

By the way, sorted() can be removed from your original post.

Code has no effect :-)

Peter
 



From peter at engcorp.com  Fri May 27 18:15:49 2005
From: peter at engcorp.com (Peter Hansen)
Date: Fri, 27 May 2005 18:15:49 -0400
Subject: cpu usage limit
In-Reply-To: <d77fin$678$1@solaris.cc.vt.edu>
References: <1117206216.695085.282510@g44g2000cwa.googlegroups.com>
	<d77d4c$21a$1@solaris.cc.vt.edu> <d77dt7$2lqn$1@ns.felk.cvut.cz>
	<d77fin$678$1@solaris.cc.vt.edu>
Message-ID: <l7CdnUKjKO23AQrfRVn-ug@powergate.ca>

rbt wrote:
> garabik-news-2005-05 at kassiopeia.juls.savba.sk wrote:
>> finished = False
>> while not finished:
> 
> Why don't you just write 'while True'??? 'while not false' is like 
> saying 'I am not unemployed by Microsoft' instead of saying 'I am 
> employed by Microsoft'. It's confusing, complex and unnecessary. Lawyers 
> call it circumlocution (talking around the truth).
> 
>>   before = time.time()
>>   do(x) # sets finished if all was computed
>>   after = time.time()
>>   delta = after-before
>>   time.sleep(delta*10/3.)

The answer to your question "why not write 'while True'?" is to be found 
in the helpful comment he put on the line with "do(x)"....  Note that 
"finished" is a flag, so "sets finished" sort of explains the whole thing.

-Peter


From snobis at gmx.de  Tue May 17 04:44:19 2005
From: snobis at gmx.de (Stefan Nobis)
Date: Tue, 17 May 2005 10:44:19 +0200
Subject: Newbie : checking semantics
References: <1115503520.392357.230620@f14g2000cwb.googlegroups.com>
	<87d5rrsh7h.fsf@snobis.de>
	<pan.2005.05.16.13.58.07.671337@dalkescientific.com>
	<d6a997$eh4$1@solaris.cc.vt.edu> <87br7bunsk.fsf@snobis.de>
	<42891732.102919961@news.oz.net>
Message-ID: <87sm0m1bto.fsf@snobis.de>

bokr at oz.net (Bengt Richter) writes:

[block end statements]
> Training wheels do no belong as a permanent part of a bicycle,

Yes, but they would be useful for example in web programming
(embedding Python into HTML), too. So they are not only training
wheels.

But that's not so important. What Python got really wrong is
mixing binding and assignment (because this way you have little
chance to catch typos in identifiers).

-- 
Stefan.


From klaus at seistrup.dk  Mon May  2 17:47:16 2005
From: klaus at seistrup.dk (Klaus Alexander Seistrup)
Date: Mon, 2 May 2005 21:47:16 +0000 (UTC)
Subject: WordPress Python Library 1.0
References: <Rmwde.850131$b5.37722456@news3.tin.it>
	<mailman.49.1115067917.6583.python-list@python.org>
	<VKwde.1322130$35.49403624@news4.tin.it>
Message-ID: <slrnd7d7v4.nn6.klaus@main.szn.dk>

Michele Ferretti wrote:

> ok, sorry, but subject is very explicit!

Still, it's insufficient for those of us who don't know what WordPress 
is, and it's a waste of time for those of us who don't speak Italian.  
C'mon, pal, you can do much better than that!

-- 
Klaus Alexander Seistrup
Magnetic Ink, Copenhagen, Denmark
http://magnetic-ink.dk/


From geon at post.cz  Sun May 29 15:08:41 2005
From: geon at post.cz (pavel.kosina)
Date: Sun, 29 May 2005 21:08:41 +0200
Subject: Tkinter weirdness item count
In-Reply-To: <mailman.38.1114801266.14961.python-list@python.org>
References: <mailman.38.1114801266.14961.python-list@python.org>
Message-ID: <d7d3up$2c8$1@ns.felk.cvut.cz>

I think the answer you should find under Subject: Tkinter slowes down


---
geon
Exception is rule.

phil napsal(a):
> Using Tkinter Canvas to teach High School Geometry
> with A LOT of success.
> 
> My drawing gets very slow after a lot of actions.
> 
> For instance I have created code to rotate a set of objects
> about a rotation point.
> rotate 360 degrees starts to get slow
> after 720 degrees its crawling.
> 
> I checked the item list with with find_all: IT GROWS!
> 
> OK, I create 3 lines using a line Class I created.
> When I rotate these 3 lines thru 360 degrees it creates
> 360 lines times 3. But each new instance of line REPLACES
> the old instance.  The line class has a destructor to delete
> the drawn object.
> 
> class line:
>     count = 0
>     def __init__(s,glob,argl,color=''):
>         line.count = line.count + 1
>             ##
>             ## buncha code here
>             ##
>         s.obj = glob.can.create_line(x0,y0,x1,y1,
>                     width=glob.width,fill=s.color)
>     def __del__(s):
>         line.count = line.count - 1
>     
>             ## delete the line object if the
>         ## class instance is deleted
>             s.glob.can.delete(s.obj)
> 
> 
> After the rotation I check line.count and it is 3
> But find_all returns a tuple ofover 1000 items.
> The drawn objects are not being deleted.
> Which is kinda weird because the rotation works.
> That is they appear to be deleted.
> 
> Is find_all() fooling me?
> Is this the reason drawing slows down? Is it refreshing
> invisible objects?
> 
> This slowing down also occurs when I draw a lot of objects.
> Lets say I draw a sine wave, say 1000 individual points.
> If I draw 4 or 5 sine waves it gets really slow.
> 
> I should mention I call update() after each drawing action.
> This is necessary for the students to watch the progress.
> I might be drawing objects in a lengthy loop and without
> update() they only appear at the end of the loop.
> 
> Thanks for any help.
> 
> -- Confused
> 
> 


From mario at nospam.noext  Wed May 11 17:17:20 2005
From: mario at nospam.noext (Mario)
Date: Wed, 11 May 2005 23:17:20 +0200
Subject: HELP Printing with wxPython
References: <d5t4oj$sct$1@carabinieri.cs.interbusiness.it>
	<42821082.6090401@syscononline.com>
Message-ID: <d5tsp0$d81$1@fata.cs.interbusiness.it>


"Larry Bates" <lbates at syscononline.com> ha scritto nel messaggio
news:42821082.6090401 at syscononline.com...
> Mario,
>
> Here is a function stripped from a working program that uses printpreview
> from wxWindows to print out cells from a grid that the user is working
> on.  Hopefully this can point you in the proper direction.

Thank you very much for the help, I will study all the code that you sent me
for a future and a more professional programming, for now I used a very
simple win32api call, not very evolved but working fine for what I needed,
since what I am doing needs to run only on a windows machine.

Thanks again :)

Mario





From reinhold-birkenfeld-nospam at wolke7.net  Mon May  2 07:44:08 2005
From: reinhold-birkenfeld-nospam at wolke7.net (Reinhold Birkenfeld)
Date: Mon, 02 May 2005 13:44:08 +0200
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <mailman.6.1115001137.6583.python-list@python.org>
References: <d4u60o$akh$1@news2.netvision.net.il>	<mailman.47.1114818531.14961.python-list@python.org>	<1114924100.296223.114020@g14g2000cwa.googlegroups.com>	<1114927892.321086.60190@z14g2000cwz.googlegroups.com>	<zX%ce.78213$ft1.5056576@phobos.telenet-ops.be>	<Zj2de.78345$a42.5091422@phobos.telenet-ops.be>
	<mailman.6.1115001137.6583.python-list@python.org>
Message-ID: <3dmi74F6q7m6hU2@individual.net>

Dan Christensen wrote:
> Roel Schroeven <rschroev_nospam_ml at fastmail.fm> writes:
> 
>> There's no level 12 yet though.
> 
> Now there's a 12 and a 13 (at least!).

Anyone solved 12? Hints?

thanks, Reinhold


From max2 at fisso.casa  Wed May  4 13:13:52 2005
From: max2 at fisso.casa (max(01)*)
Date: Wed, 04 May 2005 17:13:52 GMT
Subject: python and glut
Message-ID: <kp7ee.1331058$35.49670814@news4.tin.it>

hi there.

i installed python2.3-opengl, then i tried one of those demos:

----

#!/usr/bin/python2.3

# This is statement is required by the build system to query build info
if __name__ == '__build__':
         raise Exception

import sys
from OpenGL.GL import *
from OpenGL.GLE import *
from OpenGL.GLUT import *


class GLE_demo:

         def __init__(self):
                 # initial mouse position
                 self.lastx = 121
                 self.lasty = 121

                 # set the display mode and create the window
                 glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH)
                 glutCreateWindow("GLE demo")

                 # setup the callbacks
                 glutDisplayFunc(self.on_display)
                 glutMotionFunc(self.on_motion)
                 glutReshapeFunc(self.on_reshape)

                 #
                 glClearDepth(1.0)
                 glEnable(GL_DEPTH_TEST)
                 glClearColor(0.0, 0.0, 0.0, 0.0)
                 glShadeModel(GL_SMOOTH)

                 glMatrixMode(GL_MODELVIEW)
                 # initialize lighting */
                 glLightfv(GL_LIGHT0, GL_POSITION,  (40.0, 40, 100.0, 0.0))
                 glLightfv(GL_LIGHT0, GL_DIFFUSE, (0.99, 0.99, 0.99, 1.0))
                 glEnable(GL_LIGHT0)
                 glLightfv(GL_LIGHT1, GL_POSITION, (-40.0, 40, 100.0, 0.0))
                 glLightfv(GL_LIGHT1, GL_DIFFUSE, (0.99, 0.99, 0.99, 1.0))
                 glEnable(GL_LIGHT1)
                 glEnable(GL_LIGHTING)
                 glColorMaterial(GL_FRONT_AND_BACK, GL_DIFFUSE)
                 glEnable(GL_COLOR_MATERIAL)


         def on_motion(self, x, y):
                 # store the mouse coordinate
                 self.lastx = x
                 self.lasty = y
                 # redisplay
                 glutPostRedisplay()


         def on_reshape(self, width, height):
                 # setup the viewport
                 glViewport(0, 0, width, height)
                 # setup the projection matrix
                 glMatrixMode(GL_PROJECTION)
                 glLoadIdentity()
                 # calculate left/right and top/bottom clipping planes 
based the
smallest square viewport
                 a = 9.0/min(width, height)
                 clipping_planes = (a*width, a*height)
                 # setup the projection
                 glFrustum(-clipping_planes[0], clipping_planes[0], 
-clipping_pla
nes[1], clipping_planes[1], 50.0, 150.0)


         def on_display(self):
                 # clear the buffer
                 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)

                 # Set up the model view matrix
                 glMatrixMode(GL_MODELVIEW)
                 glLoadIdentity()
                 glTranslatef(0.0, 0.0, -80.0)
                 glRotatef(self.lastx, 0.0, 1.0, 0.0)
                 glRotatef(self.lasty, 1.0, 0.0, 0.0)

                 # a nice pale lime green
                 glColor3f(0.6, 0.8, 0.3)

                 # set the join styles for GLE
                 gleSetJoinStyle(TUBE_NORM_EDGE | TUBE_JN_ANGLE | 
TUBE_JN_CAP)
                 gleHelicoid(1.0, 6.0, 2.0, -3.0, 4.0, None, None, 0.0, 
1080.0)

                 # swap the buffer
                 glutSwapBuffers()



if __name__ == '__main__':
         # initialize GLUT
         glutInit(sys.argv)
         # create the demo window
         GLE_demo()
         # enter the event loop
         glutMainLoop ()

----

(sorry for some line breaks, some day i'll repair my newsreader)

but when i try to run it:

$ python GLE.py
freeglut (GLE.py): OpenGL GLX extension not supported by display ':0.0'

what's up? what's missing?

i use a standard debian installation.

thanks for your attention

bye

max


From anton.vredegoor at gmail.com  Sun May 29 09:21:35 2005
From: anton.vredegoor at gmail.com (Anton Vredegoor)
Date: 29 May 2005 06:21:35 -0700
Subject: nice OOP training problem
Message-ID: <1117372895.470565.5800@g43g2000cwa.googlegroups.com>

I found this on the web:

http://www.setgame.com/set/puzzle_frame.htm

and I'm currently trying to develop a script that models this space and
that gives a nice graphic display. Also developing a solver for this or
larger spaces looks interesting. I'm not asking for assistance, it just
looks like some interesting programming experience and why should there
be all work and no play?

So code solving any part of this problem (the grafics) or the solver
(find all solutions) would be interesting.

Anton



From justanbcoder at yahoo.com  Tue May 31 15:51:51 2005
From: justanbcoder at yahoo.com (newcoder)
Date: 31 May 2005 12:51:51 -0700
Subject: how to prepend string to a string?
In-Reply-To: <1117561820.940853.296290@g47g2000cwa.googlegroups.com>
References: <1117498752.591304.42280@g44g2000cwa.googlegroups.com>
	<429bcb76$1_1@newspeer2.tds.net>
	<1117561820.940853.296290@g47g2000cwa.googlegroups.com>
Message-ID: <1117569111.870371.173260@o13g2000cwo.googlegroups.com>

How about this:

dirList = ['depth1', 'depth2', 'depth3']
string = """position"""

for x in range(len(dirList)):
	string += '>> %s' % dirList.pop(0)

print string



flamesrock wrote:
> Thanks for all the responses :)
>
> You're right, Kent. That does exactly what I need it to.
>
> Anyways.. if there isn't a prepend function, I'm going to request it
> from the devs. Would be cool to see that in future versions of python.



From duncan.booth at invalid.invalid  Tue May  3 09:51:56 2005
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 3 May 2005 13:51:56 GMT
Subject: sorting list and then return the index of the sorted item
References: <1115127433.984686.99060@f14g2000cwb.googlegroups.com>
Message-ID: <Xns964B971C7AF2Bduncanbooth@127.0.0.1>

custard_pie wrote:

> I need help sorting a list...I just can't figure out how to sort a list
> and then return a list with the index of the sorted items in the list
> for example if the list I want to sort is [2,3,1,4,5]
> I need [2,0,1,3,4] to be returned
> Can someone help please....
> 
> 

you need to pair up your values with the list indices, sort the list of 
pairs then strip out the indices.

One way to do it:

>>> v = [2, 3, 1, 4, 5]
>>> import operator
>>> [ i for (i,j) in sorted(enumerate(v), key=operator.itemgetter(1))]
[2, 0, 1, 3, 4]



From mahs at telcopartners.com  Wed May  4 18:00:49 2005
From: mahs at telcopartners.com (Michael Spencer)
Date: Wed, 04 May 2005 15:00:49 -0700
Subject: Sequences in list
In-Reply-To: <1115235458.567899.209210@o13g2000cwo.googlegroups.com>
References: <1115063524.407859.273070@o13g2000cwo.googlegroups.com>	<d56519$qem$1@sea.gmane.org>	<mailman.52.1115069676.6583.python-list@python.org>	<1115146849.029539.85310@o13g2000cwo.googlegroups.com>	<mailman.123.1115151219.6583.python-list@python.org>
	<1115235458.567899.209210@o13g2000cwo.googlegroups.com>
Message-ID: <d5bga4$lcb$1@sea.gmane.org>

temp at mclift.fsnet.co.uk wrote:

> Your code will identify sequences in a list, but how to index them? I
> have an idea, which seems ridiculously long-winded, but should work.
> First, put the groups from the ?make_diffs? function into a list
> and do a search for the sequence identified from the
> ?compare_forms? function using the ?Knuth-Morris-Pratt?
> function in the python cookbook. Then the positions in that list will
> obviously be the same as those in the original.
> 
> Next is the problem of the interval between the individual groups of
> the sequence. Using something along the lines of your ?make_diffs?
> it should be a simple matter to see by what interval the groups in the
> sequence are transposed.

Hold on! Adding the index position and transposition offset is a small change to 
the existing code:

# Good sequences
s1 = ['a', 'b', 'c', 'b', 'c', 'd', 'c', 'd', 'e']
s2 = ['a', 'c', 'f', 'c', 'e', 'h', 'e', 'g', 'c']
s3 = ['c', 'a', 'a', 'f', 'f', 'd', 'd', 'b']

# Bad sequences
b1 = ['a', 'b', 'c', 'b', 'c', 'd', 'c', 'd', 'e', 'f', 'a', 'd']
b2 = ['a', 'c', 'f', 'a', 'f', 'e', 'e', 'g', 'c']


def make_groups(sequence, n, anywhere = False):
     """yields tuples of sub-sequences of length n, and their position
         from sequence.

     bool: anywhere
       False: look only at positions n*i for i = 1,2,3...
       True: return every (overlapping sequence) of length n

     Usage:
     >>> list(make_groups(s1,3))
     [(['a', 'b', 'c'], (0, 3)), (['b', 'c', 'd'], (3, 6)), (['c', 'd', 'e'], 
(6, 9))]
     """
     length = len(sequence)
     if (length % n) and not anywhere:
         raise ValueError, "Sequence length %s is not multiple of %s"\
                             % (length, n)
     for i in xrange(0, length-n+1, anywhere or n):
         yield sequence[i:i+n], (i, i+n)

def ord_note(note, note_base = "a"):
     """Return the ordinal value of a note, or the interval between two notes"""
     return (ord(note)-ord(note_base)) % 7

def make_diffs(groups):
     """return groups in canonical form where the first note
     in each sequence is 0, and each subsequent note is expressed as
     a positive interval from the first.
     Example:
      >>> list(make_diffs(make_groups(s1,3)))
     [((0, 1, 2), (0, 3)), ((0, 1, 2), (3, 6)), ((0, 1, 2), (6, 9))]
     """
     for group, index in groups:
         seq, base_note = [0], group[0]
         for note in group[1:]:
             interval = ord_note(note, base_note)
             seq.append(interval)
         yield tuple(seq), index, base_note

def group_forms(sequence, anywhere = False, max_length = 4):
     """group sequences of similar form

     yields {form_tuple: [index tuples where form occurs]}
     starting with longer forms
     """

     for length in range(max_length, 1, -1):
         forms = {}
         try:
             for group, index, base_note in make_diffs(make_groups(sequence, 
length, anywhere)):
                 forms.setdefault(group,[]).append((index,base_note))
             yield forms
         except ValueError:
             # raised if the sequence is not a multiple of length
             pass

def search(sequence, max_length = 4, min_repeats = 3):
     """print all sequences that occur least min_repeats times"""
     found = 0
     print "Finding forms length 2-%s, occuring at minimum %s times" \
             % (max_length, min_repeats)
     for form_dict in group_forms(sequence, anywhere = True):
         for form, data in form_dict.iteritems():
             if len(data) >= min_repeats:
                 print "%s:%s" % (form, ["%s:%s" % (index, ord_note(offset))
                         for index, offset in data])
                 found +=1
     print "Found: %s" % found

  >>> search(s1)
  Finding forms length 2-4, occuring at minimum 3 times
  (0, 1, 2):['(0, 3):0', '(3, 6):1', '(6, 9):2']
  (0, 1):['(0, 2):0', '(1, 3):1', '(3, 5):1', '(4, 6):2', '(6, 8):2', '(7, 9):3']
  Found: 2


Given the increasingly complex tuples between the different stages it would 
probably be worth defining a class to represent a form_match object

Michael



From elbertlev at hotmail.com  Fri May 27 21:44:12 2005
From: elbertlev at hotmail.com (elbertlev at hotmail.com)
Date: 27 May 2005 18:44:12 -0700
Subject: cpu usage limit
References: <1117206216.695085.282510@g44g2000cwa.googlegroups.com>
	<7xpsvcnx54.fsf@ruckus.brouhaha.com>
Message-ID: <1117244652.455368.227250@g43g2000cwa.googlegroups.com>

I understand, that what I suggest does not solve the problem you want,
but..

Why do you want to restrict CPU usage to 30%? In Windows I run CPU
intesive therads on IDLE priority, while interfacand/or communication
threads run on normal. This gives me best of two worlds:
1. I use 100% CPU (good) and
2. progam i responcive (very good).

There is no  cross platform way to change the thread priority. But most
OS (as well as thread libraries) support setting priorities.



From me at privacy.net  Thu May 26 09:37:43 2005
From: me at privacy.net (Dan Sommers)
Date: 26 May 2005 09:37:43 -0400
Subject: __init__() not called automatically
References: <1117081917.760603.82610@z14g2000cwz.googlegroups.com>
Message-ID: <m2ekbuqfa0.fsf@unique.fully.qualified.domain.name.yeah.right>

On 25 May 2005 21:31:57 -0700,
"Sriek" <scharan20 at gmail.com> wrote:

> Similarly, why do we have to explicitly use the 'self' keyword
> everytime?

Why do they (the C++ programmers) prepend "m_" to otherwise perfectly
good member names?

Regards,
Dan

-- 
Dan Sommers
<http://www.tombstonezero.net/dan/>


From rcrogers at gmail.com  Thu May  5 17:34:21 2005
From: rcrogers at gmail.com (Bob  Rogers)
Date: 5 May 2005 14:34:21 -0700
Subject: properties vs. eval()
References: <1115235178.971840.248160@o13g2000cwo.googlegroups.com>
	<1115282375.131965.118320@z14g2000cwz.googlegroups.com>
Message-ID: <1115328861.200050.167030@z14g2000cwz.googlegroups.com>

So you're saying you don't know the answer?  The question wasn't
"should I use setattr?"



From Scott.Daniels at Acm.Org  Tue May 17 19:06:44 2005
From: Scott.Daniels at Acm.Org (Scott David Daniels)
Date: Tue, 17 May 2005 16:06:44 -0700
Subject: Quick Reference from module doc strings.
In-Reply-To: <mailman.66.1116284785.8733.python-list@python.org>
References: <mailman.65.1116085574.29328.python-list@python.org>	<1116199904.205240.58300@g49g2000cwa.googlegroups.com>	<mailman.15.1116204313.8733.python-list@python.org>	<42880d98$1@nntp0.pdx.net>	<mailman.27.1116217027.8733.python-list@python.org>	<4288c71e@nntp0.pdx.net>
	<mailman.66.1116284785.8733.python-list@python.org>
Message-ID: <428a729a@nntp0.pdx.net>

Ron Adam wrote:

> ...What would be the advantage of using StringIO over list.append with 
> ''.join()?
The advantage is more in using a function that prints as it goes
rather than building up a large string to print.  I would call the
print function at the bottom (with None as the print destination),
rather than printing the result of calling the string function.

I just did the StringIO thing to show you that printing as you go
needn't mean you cannot get the string value without duplicating code.

--Scott David Daniels
Scott.Daniels at Acm.Org



From peter at engcorp.com  Fri May 13 09:32:11 2005
From: peter at engcorp.com (Peter Hansen)
Date: Fri, 13 May 2005 09:32:11 -0400
Subject: String formatting strangeness
In-Reply-To: <1115990147.880532.61730@o13g2000cwo.googlegroups.com>
References: <1115990147.880532.61730@o13g2000cwo.googlegroups.com>
Message-ID: <ivSdnQOJLdYPMRnfRVn-ow@powergate.ca>

dark.ryder at gmail.com wrote:
> I must be doing something wrong, but for the life of me, I can't figure
> out what.  Here's the code snippet which is giving me grief:
> 
> print type(number), type(name), type(seconds // 60), type(seconds % 60)
> print "\t\t\t<section number=\"%i\" title=\"%s\" length=\"%i:%i\"/>\n"
> % [number, name, seconds // 60, seconds % 60]
[snip]
> 
> Wait, what?  The first line clearly identifies that the the first,
> third, and fourth elements are all integers, yet the error says that
> *lack* of integers is the problem.  If I change all "%i"s to "%d", I
> get the same problem, and changing to "%s" (hey, it was worth a shot)
> gives "TypeError: not enough arguments for format string" instead.
> Huh?  I see four placeholders and a four-element tuple.

Nope, you see a four-element list.  Try changing it to a tuple... ;-)

-Peter


From teen-maria at freenet.de  Tue May 24 08:43:56 2005
From: teen-maria at freenet.de (Maria)
Date: Tue, 24 May 2005 13:43:56 +0100
Subject: TEENS FUCKIN FOR CASH
Message-ID: <DDAC168FB5C09749AD96D27804CA35D106006B29@SETUBAL>

18 Years young Teenies fuckin for Cash!
Geile Teens ficken fuer Taschengeld!
http://www.sexycorner.biz

Enjoy
Maria



From sxanth at ceid.upatras.gr  Thu May 12 04:32:14 2005
From: sxanth at ceid.upatras.gr (Stelios Xanthakis)
Date: Thu, 12 May 2005 11:32:14 +0300
Subject: pyvm -- faster python
In-Reply-To: <1115876410.813839.222080@g43g2000cwa.googlegroups.com>
References: <mailman.164.1115548611.29826.python-list@python.org>
	<1115561483.741761.212140@f14g2000cwb.googlegroups.com>
	<m102l2-9qr.ln1@home.rogerbinns.com>
	<mailman.264.1115716603.29826.python-list@python.org>
	<vu38l2-k5v.ln1@home.rogerbinns.com>
	<7xvf5qbir1.fsf@ruckus.brouhaha.com>
	<nt98l2-1e.ln1@home.rogerbinns.com>
	<7xpsvymlse.fsf@ruckus.brouhaha.com>
	<1115791624.856252.247890@z14g2000cwz.googlegroups.com>
	<7x1x8el18e.fsf@ruckus.brouhaha.com>
	<1115876410.813839.222080@g43g2000cwa.googlegroups.com>
Message-ID: <4283148E.3020103@ceid.upatras.gr>

Kay Schluehr wrote:

> 
> Yes. What we are seeking for and this may be the meaning of Armins
> intentiously provocative statement about the speed of running HLLs is a
> successor of the C-language and not just another VM interpreter that is
> written in C and limits all efforts to extend it in a flexible and
> OO-manner. Python is just the most promising dynamic OO-language to
> follow this target. 
> 

Bytecode engine is the best method for dynamic code execution
("exec", eval, etc).  A low level OOP language would be very suitable
for a python VM.

pyvm has that. A big part of it is written in "lightweight C++" [1].
That makes it less portable as the lwc preprocessor is using GNU-C
extensions.  However, it's the same extensions also used by the linux
kernel and AFAIK the intel compiler supports them too.

So probably the bigger "competitor" of pyvm is boost-python.
And that's one reason the release of the source is stalled until it
gets better.


Stelios

[1] http://students.ceid.upatras.gr/~sxanth/lwc/


From chris at simplistix.co.uk  Sun May 15 10:29:40 2005
From: chris at simplistix.co.uk (Chris Withers)
Date: Sun, 15 May 2005 15:29:40 +0100
Subject: X2Y 1.1.7 Document Processor Released!
Message-ID: <42875CD4.6060009@simplistix.co.uk>

X2Y is a flexible, configurable and extendable server-based document 
processing framework written in python.

It has the following feaures:

- Cross platform

- Fully documented

- Run as either a cron job, scheduled task or by hand

- Fully configurable logging and notification

- Fully configurable processing chains, including multiple seperate
   processing chains on a single server

- Scriptable conversion plugins, inputs and outputs

- Processors can be written in ANY language

- Input from local file system, http get or imap folder supplied as
   standard

- Output to local file system, http post or mail message supplied as
   standard

- Supplied processors for EasyPDF and OpenOffice for document conversion

Potential applications include server-side document conversion, virus 
scanning.

We are particularly interested in hearing from anyone who develops new 
inputs, outputs and processors!

For more information, please see: 
http://www.simplistix.co.uk/software/applications/x2y

cheers,

Chris

-- 
Simplistix - Content Management, Zope & Python Consulting
            - http://www.simplistix.co.uk


From johnandsarah at estragon.freeserve.co.uk  Sun May  1 17:44:57 2005
From: johnandsarah at estragon.freeserve.co.uk (John Perks and Sarah Mount)
Date: Sun, 1 May 2005 22:44:57 +0100
Subject: Multiple threads in a GUI app (wxPython),
	communication between worker thread and app?
References: <1114966991.337599.194500@f14g2000cwb.googlegroups.com>
Message-ID: <d53iki$j7l$1@newsg3.svr.pol.co.uk>

"fooooo" <phark52 at yahoo.com> wrote in message
news:1114966991.337599.194500 at f14g2000cwb.googlegroups.com...
> This is a network app, written in wxPython and the socket module. This
> is what I want to happen:

I'm not sure if this will help you, but it solved what was, for me, a
more general problem: not (normally) being able to issue wxPython calls
outside the GUI thread.

I came up with a general-purpose thread-switcher, which, given a
callable, would on invocation:
  queue itself up on the GUI event queue
  call its callable in the GUI thread (allowing arbitrary wxPython
calls)
  pass its result back to the calling thread (or re-raise any exception
there).

Instead of having a dedicated queue, it uses one already in place.
Because all calls using it are serialized, it had the beneficial
side-effect (for me, anyway)of avoiding certain concurrency issues.

(The calls to my locks module, CheckPause() and CheckCancel(), were
there so the user could suspend, resume, and cancel worker threads at
will, which the Python threading module does not naturally support(my
locks module held some state that could be set via the GUI.) If you have
no need of that, delete those lines and everything should still work
(they were a late addition).

import wx, threading, types
import locks # my code, see remark above

#-------------------------------------
# decorator used to call a method (or other callable)
# from the wxPython main thread (with appropriate switching)
#--------------------------------------
class wxThreadSwitch(object):
    def __init__(self, callable):
        object.__init__(self)
        self.callable = callable

    def __get__(self, inst, owner=None):
        c = self.callable
        # if c is a descriptor then wrap it around
        # the instance as would have happened normally
        if not isinstance(c, types.InstanceType):
            try:
                get = c.__get__
                args = [inst]
                if owner is not None:
                    args.append(owner)
                return wxThreadSwitch(get(*args))
            except AttributeError:
                pass
        # if we get here, then not a descriptor,
        # so return self unchanged
        return self

    def __call__(self, *args, **kwargs):
        if wx.Thread_IsMain():
            return self.callable(*args, **kwargs)

        locks.CheckPause()
        c = self.__wxThreadCall(self.callable)
        wx.CallAfter(c, *args, **kwargs)
        return c.Result()

    class __wxThreadCall(object):
        def __init__(self, callable):
            assert not wx.Thread_IsMain()
            object.__init__(self)
            self.callable = callable
            self.result = None
            self.exc_info = None
            self.event = threading.Event()

        def __call__(self, *args, **kwargs):
            try:
                try:
                    assert wx.Thread_IsMain()
                    assert not self.event.isSet()
                    locks.CheckCancel()
                    self.result = self.callable(*args, **kwargs)
                except:
                    self.exc_info = sys.exc_info()
            finally:
                self.event.set()

        def Result(self):
            self.event.wait()
            if self.exc_info:
                type, value, traceback = self.exc_info
                raise type, value, traceback
            return self.result


A usage example would be to decorate a function or method with it:

class Something:
    @wxThreadSwitch
    def someGUICallOrOther():
    ....


Here the method call would run via the wxThreadSwitch decorator which
would do any necessary thread switching.

Hope this helps

John




From rowen at cesmail.net  Mon May 16 18:31:17 2005
From: rowen at cesmail.net (Russell E. Owen)
Date: Mon, 16 May 2005 15:31:17 -0700
Subject: tkinter puzzler
References: <7xzmv0hq2h.fsf_-_@ruckus.brouhaha.com>
	<mailman.438.1115883752.29826.python-list@python.org>
	<7xhdh5ilz7.fsf@ruckus.brouhaha.com>
Message-ID: <rowen-B87C08.15311716052005@gnus01.u.washington.edu>

In article <7xhdh5ilz7.fsf at ruckus.brouhaha.com>,
 Paul Rubin <http://phr.cx at NOSPAM.invalid> wrote:

>Martin Franklin <mfranklin1 at gatwick.westerngeco.slb.com> writes:
>> I suspect you need to look at the columnconfigure / rowconfigure methods
>> of the container (toplevel or frame)
>
>Thanks, columnconfigure turned out to be the answer and Peter Otten's
>post showing how to use it was very informative.  For some reason
>columnconfigure is not documented in the otherwise excellent tkinter
>reference manual from New Mexico Tech.
>
>I'm having sort of a different prob now, which is I want to make a
>pulldown menu as commonly seen on web pages.  The NMT reference
>suggests using the MenuButton widget, which sort of works, though the
>entrycget and entryconfigure methods that are supposedly on the menu
>items aren't really there.  The toolkit itself says that MenuButton is
>now considered obsolete and Frederik Lundh's manual seems to say
>to use Menu somehow instead, but I haven't quite figured out how.

MenuButton is (as far as I know) the recommended way to do this
(and I've been puzzled by F. Lendh's assertion that they are
obsolete). The basics are:

  mbut = Tkinter.Menubutton.(master, text="MyMenu", inicatoron=True)
  mnu = Tkinter.Menu(mbut, tearoff=False)
  mbut["menu"] = mnu

where indicatoron=True gives you the "this is a pop-up menu" indicator 
icon. The circular reference is icky but appears to be necessary (i.e. 
having the menubutton be a parent to the menu and the menu attribute of 
the menubutton point to the menu).

I suggest you buy Grayson's "Python and Tkinter Programming"
(it has a very useful reference section in the back, though 
unfortunately it is somewhat incomplete). For more serious work you'll 
also want Welch's "Practical Programming in Tcl and Tk" (lots of good 
details about Tk).

-- Russell


From jepler at unpythonic.net  Tue May  3 13:50:03 2005
From: jepler at unpythonic.net (Jeff Epler)
Date: Tue, 3 May 2005 12:50:03 -0500
Subject: How to read an integer value from a binary file?
In-Reply-To: <db5ab7e30505031046610bca75@mail.gmail.com>
References: <db5ab7e30505031046610bca75@mail.gmail.com>
Message-ID: <20050503175003.GE8344@unpythonic.net>

As your 'for' loop shows, the number of items in the slice [2:5] is only
3, not 4.

Maybe you want the slice [2:6] instead.

>>> x = "xx\xb6/\0\0"
>>> struct.unpack('i', x[2:6])
(12214,)

Jeff
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From beliavsky at aol.com  Sat May  7 11:23:48 2005
From: beliavsky at aol.com (beliavsky at aol.com)
Date: 7 May 2005 08:23:48 -0700
Subject: get file modification time in mm/dd/yyyy format?
Message-ID: <1115479427.957430.114270@o13g2000cwo.googlegroups.com>

Using Python 2.4 on Windows, for me the command

print os.stat("temp.txt")[stat.ST_MTIME]

gives

1115478343 ,

which is "seconds since the epoch". How can I get the modification time
in a format such as

05/07/2005  11:05 AM

as in Windows with the dir command? Ideal would be a tuple of 6 values,
(year,month,day,hour,minute,second). Thanks.



From exogen at gmail.com  Fri May 20 16:14:17 2005
From: exogen at gmail.com (Brian Beck)
Date: Fri, 20 May 2005 16:14:17 -0400
Subject: appending key-value pairs to a dict
In-Reply-To: <d6lfsg$5t1$1@solaris.cc.vt.edu>
References: <d6lfsg$5t1$1@solaris.cc.vt.edu>
Message-ID: <d6lgfg$9gk$1@eeyore.INS.cwru.edu>

rbt wrote:
> I know how to setup an empty list and loop thru something... appending 
> to the list on each loop... how does this work with dicts?
> 
> I'm looping thru a list of files and I want to put the file's name and 
> its sha hash into a dict on each loop.

Like so:

d = {}
for filename in files:
     d[sha_func(filename)] = filename


Or like so:

d = dict([(sha_func(filename), filename) for filename in files])

--
Brian Beck
Adventurer of the First Order


From mage at mage.hu  Tue May  3 04:19:13 2005
From: mage at mage.hu (Mage)
Date: Tue, 03 May 2005 10:19:13 +0200
Subject: popen2 psql
In-Reply-To: <slrnd7cnmm.tnj.klaus@main.szn.dk>
References: <mailman.37.1115051453.6583.python-list@python.org>
	<slrnd7cnmm.tnj.klaus@main.szn.dk>
Message-ID: <42773401.5030102@mage.hu>

Klaus Alexander Seistrup wrote:

>Mage wrote:
>
>  
>
>>I tried to write a proxy script for "psql" command. I need some
>>query log. I failed to read from the file object.
>>    
>>
>
>The psql command is probably linked against readline; did you look
>in the ~/.psql_history file?
>
>  
>
Thank you. I will check but what about the python scripts? Why can't I
read their *print* output with popen2?

       Mage




From tobias.hofmann at medien.uni-weimar.de  Sun May 15 07:53:48 2005
From: tobias.hofmann at medien.uni-weimar.de (tobias.hofmann at medien.uni-weimar.de)
Date: Sun, 15 May 2005 11:53:48 GMT
Subject: Multi-Kulturell = Multi-Kriminell
Message-ID: <7a16ce.f7fd287ff57@medien.uni-weimar.de>

Lese selbst:
http://www.npd.de/npd_info/meldungen/2005/m0105-19.html


From cookedm+news at physics.mcmaster.ca  Sun May  1 17:27:28 2005
From: cookedm+news at physics.mcmaster.ca (David M. Cooke)
Date: Sun, 01 May 2005 17:27:28 -0400
Subject: Wrapping c functions
References: <mailman.84.1114976926.14961.python-list@python.org>
	<pan.2005.05.01.20.00.19.872272@dalkescientific.com>
Message-ID: <qnk3bt6y6v3.fsf@arbutus.physics.mcmaster.ca>

Andrew Dalke <dalke at dalkescientific.com> writes:

> Glenn Pierce wrote:
>>         if (!PyArg_ParseTuple(args, "isi", &format, filename, &flags))
>>             return NULL;
>
> Shouldn't that be &filename ?  See
>   http://docs.python.org/ext/parseTuple.html
> for examples.
>
>
>>         dib = FreeImage_Load(format, filename, flags);
>
>> Also I have little Idea what to return from the function. FIBITMAP * is
>> an opaque pointer
>> that I pass to other FreeImage functions, I pretty certain
>> Py_BuildValue("o", dib) is wrong.
>
> If it's truly opaque and you trust your use of the code you can
> cast it to an integer, use the integer in the Python code, and
> at the Python/C interface cast the integer back to a pointer.
> Of course if it no longer exists you'll get a segfault.
>
> If you want more type safety you can use the SWIG approach and
> encode the pointers as a string, with type information and
> pointer included.

Better yet, use a CObject. That way, a destructor can be added so as
to not leak memory. Type info could be included in the desc field.

return PyCObject_FromVoidPtr(dib, NULL)

(the NULL can be replaced with a routine that will free the image.)

-- 
|>|\/|<
/--------------------------------------------------------------------------\
|David M. Cooke
|cookedm(at)physics(dot)mcmaster(dot)ca


From Wayne.D.Irvine at BHPBilliton.com  Wed May 11 18:42:49 2005
From: Wayne.D.Irvine at BHPBilliton.com (Irvine, Wayne D)
Date: Thu, 12 May 2005 08:42:49 +1000
Subject: Read tab delimited ascii file
Message-ID: <55B245050A9AD61192140002A544108B02789DC9@melclapub01.corpmel.bhp.com.au>

I have a tab delimited ascii/excel file formated like

LineNum  Data1    Data2...  Data423
Line001    Val1_1  Val2_1... Val423_1
Line002    Val1_2  Val2_2... Val423_2
...
Linennn...

I want to read the headers/column names in the first line of the file
and later refer to these by name. And of course I need to store the
column of data that belongs to each header/column name. Eventually I
want to produce a series of plots where the x axis will always be
LineNum and I will select a subsection of the Data columns to plot the
values of.

Any help is much appreciated.

Wayne
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From shane at hathawaymix.org  Sat May 21 04:19:08 2005
From: shane at hathawaymix.org (Shane Hathaway)
Date: Sat, 21 May 2005 02:19:08 -0600
Subject: first release of PyPy
In-Reply-To: <87mzqpytep.fsf@wilson.rwth-aachen.de>
References: <mailman.264.1116625088.8733.python-list@python.org>	<1116629407.638782.145950@g47g2000cwa.googlegroups.com>	<1116644536.741250.249860@g44g2000cwa.googlegroups.com>	<mailman.279.1116649250.8733.python-list@python.org>	<1116653460.808204.74460@g43g2000cwa.googlegroups.com>
	<87mzqpytep.fsf@wilson.rwth-aachen.de>
Message-ID: <428EEEFC.7080400@hathawaymix.org>

Torsten Bronger wrote:
> Hall?chen!
> 
> "Kay Schluehr" <kay.schluehr at gmx.net> writes:
> 
> 
>>[...]
>>
>>[...] Once You get enough speed out of the PyPy-runtime and the
>>community shifts to it the PEP-process degenerates in the view of
>>a PyPythonista to discussions about aspects of the std-objectspace
>>and language design patterns. There will be some CPython
>>compliance - that's all.
> 
> 
> Please could somebody explain to us non-CS people why PyPy could
> have speed features CPython can't have?

The idea is to shift more of the responsibility to optimize code from
the human to the computer.  Since C code is at a low level, the computer
can only infer low level intent and thus perform low level
optimizations.  Humans optimize C by making thousands of speed-oriented
decisions directly in the code.  Python code is at a much higher level,
which should enable the computer to discover more of the programmer's
intent and perform deep optimizations.

In the end, the computer's automated optimization could turn out better
than a human's manual optimization.  Thus, by expressing the Python
interpreter in a high level manner, PyPy is a first step toward deep
optimizations that aren't possible to automate in C.

Even if things don't turn out that way, note that each generation of
programming languages builds on its predecessors, and PyPy could help
bootstrap the next generation.  Assemblers first had to be written in
machine code; when it was possible to write assemblers in assembly,
people started writing complex grammars and came up with C.  C compilers
first had to be written in assembly; when it was possible to write C
compilers in C, people started inventing high level languages.  Now
people are experimenting with high level compilers written in high level
languages.  Where will this pattern lead?  Who knows. :-)

Shane


From sjmachin at lexicon.net  Sun May 15 22:23:02 2005
From: sjmachin at lexicon.net (John Machin)
Date: 15 May 2005 19:23:02 -0700
Subject: problem uploading ZIP file tp PyPI
References: <spsb81hia4m5n136tp0sgpuldd0gon555m@4ax.com>
	<4287fd5e$0$4655$afc38c87@news.optusnet.com.au>
Message-ID: <1116210182.148076.159110@g44g2000cwa.googlegroups.com>

richard wrote:
> John Machin wrote:
> > Sorry in advance if this is not the correct forum ...
>
> Quite. The support link for PyPI is in the sidebar of the site.
>

Tried that, when I was trying to register and getting strange error
messages about the user name, like "John Machin" and "John_Machin" were
not "ascii" [it finally permitted "sjmachin"]. The response volume
could not be likened to that of a fire-hose.

>
> > I'm trying to upload what appears to be a perfectly OK zip file as
a
> > "source" file type to PyPI, and am getting this response:
> >
> > Error...
> > There's been a problem with your request
> > exceptions.ValueError: invalid distribution file
>
> The *only* valid (perfectly OK) source file to upload is a Source
> Distribution as generated by the "sdist" setup.py command.
>

Which is precisely how the file in question was generated:

setup.py sdist --format=zip



From sxanth at ceid.upatras.gr  Tue May 10 05:26:21 2005
From: sxanth at ceid.upatras.gr (Stelios Xanthakis)
Date: Tue, 10 May 2005 12:26:21 +0300
Subject: pyvm -- faster python
In-Reply-To: <m102l2-9qr.ln1@home.rogerbinns.com>
References: <mailman.164.1115548611.29826.python-list@python.org>
	<1115561483.741761.212140@f14g2000cwb.googlegroups.com>
	<m102l2-9qr.ln1@home.rogerbinns.com>
Message-ID: <42807E3D.501@ceid.upatras.gr>

Roger Binns wrote:

>>could You tell us a bit more about Your motivation to create an
>>alternative C-Python interpreter?
> 
> 
> I'd also be curious to know if the performance gains would remain
> once it gets fleshed out with things like closures, long numbers,
> new style classes and a C library compatibility shim.
> 

I guess it will.  There are several places with /*XXX:speed up*/
and a couple more ideas to gain exrta speed.  On the other hand
pyvm does not check for Bad Internal Calls and other checks Cpython
does to be OK in all cases (for example if __cmp__ modifies a list
while it's being sorted, in pyvm you *can* get a crash).

There is no plan to implement closures; unless there is a way to
turn closures to default arguments with bytecode hacking.  But yes,
closures are interesting, especially in generator expressions and
lambdas.

I am not very interested on C compatibility.  Once the source is
open people can implement it if they want but I'd rather go with
an advanced ctypes module which will make loading dynamic libraries
a matter of python code.


Stelios



From philippe at philippecmartin.com  Thu May 26 11:34:39 2005
From: philippe at philippecmartin.com (Philippe C. Martin)
Date: Thu, 26 May 2005 15:34:39 GMT
Subject: SCF Bundle released
Message-ID: <j0mle.3985$TJ2.3443@newssvr11.news.prodigy.com>

Dear all,

I am very happy to announce the release of SCFB: a python development
toolkit for Smart Cards.

SCFB comes with all necessary tools to easily get a Smart Card application
running.

SCFB also includes the necessary Smart Card and their software interface.


SCFB is the tool we use to develop our own Smart Cards solutions.

You may find information on SCFB by following the links:
www.snakecard.com/html_bundle
www.snakecard.com/scfb.pdf


Best regards,

Philippe Martin


From richie at entrian.com  Thu May 12 10:11:53 2005
From: richie at entrian.com (Richie Hindle)
Date: Thu, 12 May 2005 15:11:53 +0100
Subject: Launch file in Notepad
In-Reply-To: <42836024.1040102@po-box.mcgill.ca>
References: <42835db6$0$1334$5fc3050@dreader2.news.tiscali.nl>
	<42836024.1040102@po-box.mcgill.ca>
Message-ID: <qio681hegtftifk04f3f7p5q50tvk3gg3j@4ax.com>


[George]
> b1="c:\test.txt"

With this code, your problem is the embedded tab as you say.  Use either
r"c:\test.txt" or "c:\\test.txt".  However, if this is true:

> By the way, b1 comes from a command line parameter, so the user enters 
> c:\test.txt as command line parameter.

then there will be no embedded tab.  How are you prompting the user?  When
I run this:

import os
b1=raw_input("Enter a filename: ")
os.system('notepad.exe ' + b1)

and enter c:\test.txt, it works as expected.

[Brian]
> There are several ways, but the preferred solution is to switch the 
> slash direction: "c:/test.txt". Python's smart enough to notice its 
> running on Windows and do the right thing with the slash.

In fairness to Windows, I don't believe Python does anything special here.
Windows itself happily accepts either forward slash or backslash at the OS
level - it's only the shells (explorer.exe or to a lesser extent cmd.exe)
that don't accept forward slashes.

-- 
Richie Hindle
richie at entrian.com



From swiftset at gmail.com  Tue May 31 10:57:49 2005
From: swiftset at gmail.com (Alex Gittens)
Date: Tue, 31 May 2005 07:57:49 -0700
Subject: something like CPAN, PPMs?
Message-ID: <d60850a005053107571dd5c2d8@mail.gmail.com>

I'm new to Python from Perl, and loving it. Has there ever been any
discussion of creating a similar resource as CPAN for Python, or a
similar distribution method as PPMs? Seems like it would make a great
language even better.

Alex
-- 
http://tangentspace.net/cz


From andre.roberge at gmail.com  Mon May  9 16:58:53 2005
From: andre.roberge at gmail.com (=?ISO-8859-1?Q?Andr=E9_Roberge?=)
Date: Mon, 09 May 2005 17:58:53 -0300
Subject: Advice needed on __del__
In-Reply-To: <d5obmp$cqh$1@sea.gmane.org>
References: <d5o1s1$8h3$1@sea.gmane.org> <d5obmp$cqh$1@sea.gmane.org>
Message-ID: <d5oifh$7n8$1@sea.gmane.org>

Fredrik Lundh wrote:
> Andr? Roberge wrote:
> 
> 
> 
>>This morning I had the following thought:
>>I can, when I create a Jekyll object, update
>>an outside_list.
>>If, somehow, I could update that list when
>>a Jekyll object disappears
>>(perhaps by using __del__, which I have never touched)
> 
> 
> Python makes no guarantees whatsover about when and how to
> run __del__, so relying on it to remove user-visible resources is a
> rather bad idea

[See idea at the very end about this.]

> 
>>Any suggestions?
> 
> why wouldn't
> 
>     def subplot():
>          Evil = Jekyll()   # Evil_twin gets created and displayed
>          Evil.doStuff()    # Evil_twin does stuff on the screen
>          Evil.destroy()
> 
> work for you?
> 
> </F>
Unfortunately, it wouldn't.
It's difficult to explain in a few words why, but I'll try anyway!

I'm developping a program (rur-ple) which is designed to
help learning Python.  In an earlier version (that didn't provide
support for deriving classes from existing one) I had it working so that 
when "Evil" would get out of scope, Evil_twin would disappear
from the screen.  This came as an initial surprise for me,
but a pleasant one.  Better than having an example like:

def boring():
    x = 1
    print x
boring()
print x  # gives an error message.

When I added the possibility of deriving classes, I had to
change the connection between Jekyll and Hyde ... and, so
far, lost that feature.

If I need to have the user call Evil.destroy() as Evil
is getting out of scope, it would miss the whole point
of teaching about the natural way scope and namespace
work.

I guess I'll have to try and learn how to use __del__,
and see if it can solve my problem.

===
A thought occurred to me, regarding "when" __del__
is called.  Can I force Python, through some function call,
to perform this.  Each time I refresh the screen, I could
force that call, then check to see if Evil has been
destroyed by Python, which would give me the information
I need to destroy Evil_twin behind the scene myself -
which is what I am really after.




From mohan at terabolic.com  Sun May 29 20:37:26 2005
From: mohan at terabolic.com (MKoool)
Date: 29 May 2005 17:37:26 -0700
Subject: stdout and stderr showing output only after script is done
In-Reply-To: <1117412433.739654.3770@g44g2000cwa.googlegroups.com>
References: <1117412433.739654.3770@g44g2000cwa.googlegroups.com>
Message-ID: <1117413446.179545.171470@g44g2000cwa.googlegroups.com>

sorry, i'm an idoit who just found that i should use the -u option, my
bad



From zulli at izh.ch  Tue May 24 08:32:39 2005
From: zulli at izh.ch (Raphael Zulliger)
Date: Tue, 24 May 2005 14:32:39 +0200
Subject: Running in Release or Debug version of the python interpreter?
Message-ID: <d6v71s$9ds$1@news.hispeed.ch>

Hi

I have to check wheter a .py script is run within the debug or the 
release version of an embedded python interpreter (in short, wheter 
python24_d.dll or python24.dll is in use).

long version: I'm using ctypes to load my own dll. There exists 2 
version of this dll - a debug and a release version (where one is linked 
against debug C runtime dll and the other to release C runtime dll). Now
I have to change the name of the dll I want to be loaded by ctypes... 
But how can I find out which of the dll I have to load?!

Thanks in advance!
Raphael Zulliger


From terjeja at gmail.com  Wed May  4 06:46:29 2005
From: terjeja at gmail.com (Terje Johan Abrahamsen)
Date: 4 May 2005 03:46:29 -0700
Subject: Creating Files
In-Reply-To: <195h71hm06gtipjafo6v62gh371b9n3tp6@4ax.com>
References: <esug71lo1nd3773rk71l7rtus35tm4mfcu@4ax.com>
	<427886b9$0$285$626a14ce@news.free.fr>
	<195h71hm06gtipjafo6v62gh371b9n3tp6@4ax.com>
Message-ID: <1115203589.374203.73790@z14g2000cwz.googlegroups.com>


Dan wrote:
> On Wed, 04 May 2005 10:24:23 +0200, bruno modulix <onurb at xiludom.gro>
> wrote:
>
> >As in any other language I know : just open it in write mode !-)
>
> Easy when you know how.
>
> Thanks

e = file('c:/file.txt', 'w')

By the way, check out the Python tutor service...
http://mail.python.org/mailman/listinfo/tutor



From 550283447739-0001 at t-online.de  Wed May 18 18:31:10 2005
From: 550283447739-0001 at t-online.de (Oliver Albrecht)
Date: Thu, 19 May 2005 00:31:10 +0200
Subject: Image.putpalette(Colors)?
References: <d6cl5u$mas$05$1@news.t-online.com>
	<mailman.100.1116341360.8733.python-list@python.org>
Message-ID: <d6gf1c$64s$04$1@news.t-online.com>

I think in this Example is an fault
lut has the sequence from "im" but not from "lut.putdata(range(256))"

##Getting the Palette Contents Using Resize/Convert
assert im.mode == "P"

lut = im.resize((256, 1))
lut.putdata(range(256))
lut = im.convert("RGB").getdata()
       ^^
# lut now contains a sequence of (r, g, b) tuples

Fredrik Lundh wrote:

> here's one of the first google hits for "PIL putpalette":
>
>     http://effbot.org/zone/pil-pseudocolor.htm





From kent37 at tds.net  Mon May 30 08:26:55 2005
From: kent37 at tds.net (Kent Johnson)
Date: Mon, 30 May 2005 08:26:55 -0400
Subject: write html-headers (utf-8)
In-Reply-To: <pan.2005.05.30.07.11.54.252974@localhost.localdomain>
References: <pan.2005.05.30.07.11.54.252974@localhost.localdomain>
Message-ID: <429b066c$1_1@newspeer2.tds.net>

db wrote:
> Hello all,
> 
> I hope this is the correct newsgroup for this question.
> 
> Does anybody know how I can write a html-header with python(cgi)? 
> The problem is, I have a few html templates in which I have a header e.g:
> 
> <!DOCTYPE  HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/strict.dtd">
> <html>
> <head>
> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">

If you are using CGI you can set the Content-Type header directly. Before you output your HTML do
print "Content-Type: text/html; charset=UTF-8"
print  # blank line, end of headers

Kent


From dalke at dalkescientific.com  Sun May  1 02:44:53 2005
From: dalke at dalkescientific.com (Andrew Dalke)
Date: Sun, 01 May 2005 06:44:53 GMT
Subject: Interrupting execution of PyRun_SimpleScript()
References: <35b78d97.0504260300.7b5d0458@posting.google.com>
Message-ID: <pan.2005.05.01.06.44.53.631810@dalkescientific.com>

A few days ago stephan wrote:
> Im am using PyRun_SimpleString() inside a BCB 5.0 GUI app
> on win32.

Never used it so can only offer a suggestion.
 
> For this I have a button called "stop", and when
> the user executes it, I generate an exeption by
> calling:
> PyRun_SimpleString("raise KeyboardInterrupt\n").

The fact that your GUI can call SimpleString implies
to me that Python is running with multiple threads.
The string is executed in a different thread from your
other thread.  The exception isn't being called from
the right thread.  Instead it's caught by the top-level
exception handler for the GUI, which reports the error.

Is it possible to put an explicit "check this variable
and if it's true then abort" in your time-intensive code?

				Andrew
				dalke at dalkescientific.com



From jfj at freemail.gr  Mon May  2 20:02:58 2005
From: jfj at freemail.gr (jfj)
Date: Tue, 03 May 2005 03:02:58 +0300
Subject: empty lists vs empty generators
In-Reply-To: <509534af.0505021514.5e49aa2@posting.google.com>
References: <509534af.0505021514.5e49aa2@posting.google.com>
Message-ID: <4276BFB2.6090109@freemail.gr>

Brian Roberts wrote:

> I'm using using generators and iterators more and more intead of
> passing lists around, and prefer them.  However, I'm not clear on the
> best way to detect an empty generator (one that will return no items)
> when some sort of special case handling is required.
>

Usually it will be the job of the generator to signal something like 
this.  I think a possible way might be:

     class GeneratorEmpty: pass

     def generator():
          if not X:
              raise GeneratorEmpty
          for i in X:
               yield i

     try:
          for x in generator
              something (x)
     except GeneratorEmpty:
          generator_special_case

The trick is that when generators raise exceptions they terminate.
Although this is probably not what you want.  The thing is that you
cannot know if a generator will return any elements until you call
its next() method.


> Q2: Is there a way that handles both lists and generators, so I don't
> have to worry about which one I've got?

I don't think this is possible.  A generator must be called (with
next()) in order for its code to take over and see if it is empty or
not.  Unlike the list.


jfj



From philippe at philippecmartin.com  Sat May 28 14:28:15 2005
From: philippe at philippecmartin.com (Philippe C. Martin)
Date: Sat, 28 May 2005 18:28:15 GMT
Subject: Trying to understand pickle.loads withou class declaration
Message-ID: <3L2me.3465$3D6.2238@newssvr12.news.prodigy.com>

Hi,

Shuffling files around in my project, I notice I broke everything when I
stopped declaring classes in a program that "pickled.loaded" existing
pickled object of type "classes".

The error message being that the class(es) was unknown.

However, I _think_, I did manage to do the following in the past:

1) pickle.dump class "test" with field "A" intialized in declaration
2) pickle.load class "test" and add field "B" then pickle.dumps it
3) pickl.load class "test" with no problem although field "B" was not
initialized in that declaration.


I have two questions:

1) Why cannot the interpreter accept to load an object which class is not
defined ?
2) assuming the above (.... I _think_ ....) is true, why then is there not
problem in loading an object which changes dynamically.

Hope I'm making sense.

Any clue ?

Thanks,

Philippe



From rambam at bigpond.net.au  Sun May  8 03:50:25 2005
From: rambam at bigpond.net.au (Taenia Solium)
Date: Sun, 08 May 2005 07:50:25 GMT
Subject: Stick to what you know instead of making a complete idiot of yourself.
References: <1113301533.054410.203710@z14g2000cwz.googlegroups.com>
	<mailman.1813.1113355346.1799.python-list@python.org>
	<1113856843.023012.165500@l41g2000cwc.googlegroups.com>
	<1113908069.264676.207090@g14g2000cwa.googlegroups.com>
	<1115328523.852744.110390@f14g2000cwb.googlegroups.com>
	<1115423751.016177.250650@o13g2000cwo.googlegroups.com>
Message-ID: <87mzr6w3dg.fsf_-_@kafka.homenet>

"Xah Lee" <xah at xahlee.org> writes:

> HTML Problems in Python Doc

Why dont you write a Mathematica tutorial instead ?

It looks like you know a little about Mathematica while
your knowledge of Python is abyssmal.


From john at hazen.net  Mon May  2 17:01:25 2005
From: john at hazen.net (John Hazen)
Date: Mon, 2 May 2005 14:01:25 -0700
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <3dmoghF6s3es3U1@individual.net>
References: <d4u60o$akh$1@news2.netvision.net.il>
	<1114828856.889984.171750@g14g2000cwa.googlegroups.com>
	<1115036638.557573.153250@z14g2000cwz.googlegroups.com>
	<mailman.22.1115040588.6583.python-list@python.org>
	<3dmoghF6s3es3U1@individual.net>
Message-ID: <20050502210125.GA30720@gate2.hazen.net>

* Reinhold Birkenfeld <reinhold-birkenfeld-nospam at wolke7.net> [2005-05-02 06:19]:
> John Hazen wrote:
> > Have you found the zip file yet?
> > 
> > (I did, and I still can't figure it out....) 
> 
> It's best when you use the zipfile module.

Cool.  I had just unzipped the zipfile, and was looking at the files
directly.  The comments weren't added to the files in the OS, so I was
only thinking about jpeg comments (since the photo was also a "zip").

I love the way this challenge is making me poke into pieces of the
library I've never used before.  :)

-John


From shane at hathawaymix.org  Mon May 23 15:26:40 2005
From: shane at hathawaymix.org (Shane Hathaway)
Date: Mon, 23 May 2005 13:26:40 -0600
Subject: first release of PyPy
In-Reply-To: <86fywgy1av.fsf@guru.mired.org>
References: <mailman.264.1116625088.8733.python-list@python.org>	<1116629407.638782.145950@g47g2000cwa.googlegroups.com>	<1116644536.741250.249860@g44g2000cwa.googlegroups.com>	<mailman.279.1116649250.8733.python-list@python.org>	<1116653460.808204.74460@g43g2000cwa.googlegroups.com>	<87mzqpytep.fsf@wilson.rwth-aachen.de>	<mailman.285.1116663550.8733.python-list@python.org>
	<86fywgy1av.fsf@guru.mired.org>
Message-ID: <42922E70.5020907@hathawaymix.org>

Mike Meyer wrote:
> Basically, there's a *lot* of history in programming languages. I'd
> hate to see someone think that we went straight from assembler to C,
> or that people didn't understand the value of dynamic languages very
> early.

Yes, although I wasn't following historical events; I was following the
trends of what programmers in general have used.  Theory has always been
far ahead of practice... and generalizations are never correct. ;-)

Shane


From steven.bethard at gmail.com  Wed May 25 19:27:45 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Wed, 25 May 2005 17:27:45 -0600
Subject: Improve the performance of a loop
In-Reply-To: <1117058565.920549.221420@g47g2000cwa.googlegroups.com>
References: <1117058565.920549.221420@g47g2000cwa.googlegroups.com>
Message-ID: <I-WdnXO_coVvlAjfRVn-vg@comcast.com>

querypk at gmail.com wrote:
> vbox = array(m) (size: 1000x1000 approx)
> for b in bx:
>     vbox[ b[1], b[0]:b[2] ] = 0
>     vbox[ b[3], b[0]:b[2] ] = 0
>     vbox[ b[1]:b[3], b[0] ] = 0
>     vbox[ b[1]:b[3], b[2] ] = 0

This may not help, but you could try to minimize the number of times you 
call b's __getitem__, e.g.:

for b0, b1, b2, b3 in bx:
     vbox[b1, b0:b2] = 0
     vbox[b3, b0:b2] = 0
     vbox[b1:b3, b0] = 0
     vbox[b1:b3, b2] = 0

If it helps, I wouldn't expect it to help a lot though.  You could also try:

for b0, b1, b2, b3 in bx:
     b0_2 = slice(b0, b2)
     b1_3 = slice(b1, b3)
     vbox[b1, b0_2] = 0
     vbox[b3, b0_2] = 0
     vbox[b1_3, b0] = 0
     vbox[b1_3, b2] = 0

But again, I wouldn't expect dramatic improvements...

STeVe


From jabel at plus.net  Wed May 11 04:29:55 2005
From: jabel at plus.net (John Abel)
Date: Wed, 11 May 2005 09:29:55 +0100
Subject: Defunct Processes With subprocess.Popen
Message-ID: <4281C283.5090805@plus.net>

Hi!

I'm currently writing a script which launches external programs, but it 
keeps leaving zombie/defunct processes behind, until I kill the 
launching script, which is a bit of a pain, as it's supposed to be a 
daemon.  The code I'm using is:

newPid = subprocess.Popen( cmdLine[ 1: ], executable=cmdLine[ 0 ], 
close_fds=True ).pid

I've tried calling it using the shell=True flag, but that leaves a 
zombie for the sh, instead.  I'm not interested in any output, the only 
thing I need returning, is the pid of the new process.  I've tried using 
spawn*, with the same results.  Does anyone have any ideas?

Thanks.

J


From reallarryboy at yahoo.com  Mon May 30 19:45:01 2005
From: reallarryboy at yahoo.com (mwdsmith)
Date: 30 May 2005 16:45:01 -0700
Subject: Checking for a full house
References: <1117071824.882035.250710@g49g2000cwa.googlegroups.com>
	<roy-DA1955.22200025052005@reader1.panix.com>
Message-ID: <1117496701.600695.183710@g14g2000cwa.googlegroups.com>

Wow...  This is amazing, I didn't know there were so many way's of
doing this!  Thank you every one for all your suggestions.   I
particularly like the sorting counting ones.

And no, Roy, this isn't a home work assignment, at the moment all of
those contain php and java RMI.  :)



From jmeile at hotmail.com  Wed May  4 03:55:50 2005
From: jmeile at hotmail.com (Josef Meile)
Date: Wed, 04 May 2005 09:55:50 +0200
Subject: PHPParser pod Zope
In-Reply-To: <1115181234.612599.83930@g14g2000cwa.googlegroups.com>
References: <yttaxdmad3aa$.1cemtbg8lyvba.dlg@40tude.net>
	<4277d8ea$0$18802$636a15ce@news.free.fr>
	<1115181234.612599.83930@g14g2000cwa.googlegroups.com>
Message-ID: <42788006.8080700@hotmail.com>

George Sakkis wrote:
> Bruno Desthuilliers wrote:
> 
>>JZ a ?crit :
>>
>>>Probuje zainstalowac modul php pod zope i tam napisali dziwna rzecz
> 
> ze
> 
>>>potrzebuje "PHP CGI program" a nie PHP CLI. Kompilacja php 5.0.4
> 
> pod
> 
>>>linuksem daje mi w wyniku mod_php + 5 plikow binarnych: pear, php,
>>>php-config, phpextdist, phpsize. Zas lektura skryptu do zope jest
> 
> nizbyt
> 
>>>jasna. Napisali:
>>>
>>
>>(snip)
>>D?sol?, ce groupe est anglophone, il serait donc tr?s probablement
> 
> 
>>pr?f?rable (en tous cas pour toi, et si bien s?r tu esp?res une
> 
> r?ponse,
> 
>>mais sinon je ne vois pas l'int?r?t de poster ici...) de nous
> 
> renvoyer
> 
>>?a en anglais dans le texte !-)
>>
>>I-too-can-speak-weird-foreign-languages-ly'yrs
>>Bruno
> 
> 
> ??? ? ???????? ????????? ????????? ??
> ??????? ??????, ? ??????? ?? ?????????
> ???????? ? ??????? ? ????? ??????
> ???????????? ??? ?????????...
> 
> If-this-is-all-greek-to-you-you're-right-ly'yrs
> George
I don't find this two replies funy :-(. I think it is impolite to make
fun of the OP. You could say: "The official language is english" or
something like that. And if somebody knows the language he speaks, then
a pointer to an appropiate list would be usefull.

Best regards,
Josef



From km at mrna.tn.nic.in  Fri May 13 20:37:32 2005
From: km at mrna.tn.nic.in (km)
Date: Sat, 14 May 2005 06:07:32 +0530
Subject: 80 bit precision ?
Message-ID: <20050514003732.GA4225@mrna.tn.nic.in>

Hi all,

does python currently support 80 bit precision  Floating Point Unit ? 

regards,
KM


From peter at engcorp.com  Fri May 13 13:21:26 2005
From: peter at engcorp.com (Peter Hansen)
Date: Fri, 13 May 2005 13:21:26 -0400
Subject: stop a thread safetely
In-Reply-To: <pan.2005.05.13.14.47.34.35565@gmail.com>
References: <pan.2005.05.13.12.06.14.991870@gmail.com>
	<UvCdnaGDcsHBOhnfRVn-vg@powergate.ca>
	<pan.2005.05.13.14.47.34.35565@gmail.com>
Message-ID: <GKydnSRaPKHMfxnfRVn-ig@powergate.ca>

Zunbeltz Izaola wrote:
> On Fri, 13 May 2005 09:10:13 -0400, Peter Hansen wrote:
>>How did you intend to stop the thread in a manner which might be unsafe?
>>(Hint, unless you're doing something unusual, you can't.)
> 
> I have a threaded object (Mythread). It checks if want_thread
> variable is True to return. The problem is that this object 
> execute a function that is a tcp comunication

Since you didn't include any of the code related to threads, I'll limit 
my analysis to the code you did post:

>     def Client(self,Request,Answer):
>         totalsent = 0
>         while totalsent < 608:
>             sent = self.sock.send(Request.struct2string()[totalsent:])
>             if sent == 0:
>                 raise RuntimeError, "socket broken"
>             totalsent = totalsent + sent

Note that you could simplify the above code to this one line:
           self.sock.sendall(Request.struct2string())

>         if Request.Codigo != 37:
>             self.WriteLog("Request",Request)
>         data = self.sock.recv(608)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^  BAD CODE

>         Answer.string2struct(data)
>         if int(Answer.Param[9]) != 37:
>             self.WriteLog("Answer",Answer)
> 
> The Client function send a Request (them write it in a log file),
> gets and answer and and write it. The problem is that when i stop
> the thread a get somethime the Request writed but not the answer,
> as if the funciton Client returns before it ends.

This is possibly consistent with the error marked above as BAD CODE.  A 
call to recv() does not guarantee that the full 608 bytes of data is 
read.  It could actually read any amount from 1 to 608 bytes.  See the 
docs and/or Google for "python socket howto" for more detail.

Note also that so far it still looks like this has nothing to do with 
threads.  If you believe it does, you'll need to provide more background 
and code.

-Peter


From onurb at xiludom.gro  Fri May 27 10:22:51 2005
From: onurb at xiludom.gro (bruno modulix)
Date: Fri, 27 May 2005 16:22:51 +0200
Subject: a html parse problem
In-Reply-To: <1117201326.001154.179640@f14g2000cwb.googlegroups.com>
References: <1117201326.001154.179640@f14g2000cwb.googlegroups.com>
Message-ID: <42972d3d$0$8823$636a15ce@news.free.fr>

cheng wrote:
> hi,all
> 
> if the html like:
>  <meta name = "description" content = "a test page">
>  <meta name = "keywords"   content = "keyword1 keyword2">
> 
> if i use:
>     def handle_starttag(self, tag, attrs):
>         if tag == 'meta':
>            self.attr = attrs
>         self.headers += ['%s' % (self.attr)]
>         self.attr = ''



> will get the output:
> [('name', 'description'), ('content', 'a test page')]
> 
> [('name', 'keywords'), ('content', 'keyword1 keyword2')]

> is it some way that only take the content like " a test page, keyword1
> , keywork2"

And put it where ?-)

Well, it may looks like this:

  def handle_starttag(self, tag, attrs):
    if tag == 'meta':
        try:
	    self.content.append(attrs['content'])
        except KeyError:
            pass
    self.headers += ['%s' % attr]

HTH
-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From jimd at starshine.org  Sun May 22 22:50:00 2005
From: jimd at starshine.org (AnswerGuy)
Date: 22 May 2005 19:50:00 -0700
Subject: How to detect a double's significant digits
References: <1115314620.902071.323410@f14g2000cwb.googlegroups.com>
	<mailman.53.1115315497.29826.python-list@python.org>
Message-ID: <1116816599.989096.159440@g44g2000cwa.googlegroups.com>

James Stroud wrote:
> Significant digits are an accounting concept. As such, it is up to
the
> accountant to keep track of these as only she knows the precision of
her
> measurements.
>
> Koan for the day:

> What are the significant digits of 0.1?

> Hint:

> >>> `0.1`

> James

> On Thursday 05 May 2005 10:37 am, so sayeth mrstephengross:
>> Hi all... How can I find out the number of significant digits (to
the
>> right of the decimal place, that is) in a double? At least, I
*think*
>> that's what I'm asking for. For instance:

>> 0.103 --> 3
>> 0.0103 --> 4
>> 0.00103 --> 5
>> 0.000103 --> 6
>> 0.0000103 --> 7

 Since "significant digits" is a representation concept rather
 than a mathematical one I'd be inclined to convert the value
 to a string, split on the decimal point and return the length
 of that.

 A naive approach:

    def sigdigits(x):
       return len( ("%s" % float(x)).split('.')[1])


 ... but this gives bogus results for integers (saying that they
 have "one" significant digit when, by your definition they have
 zero.

 I suppose you have to amend your definition to handle numbers
 larger than 1 and I have to do something different than just
 coercing into a float().

    def sigdigits(x):
       assert float(x) == x  # raise an exception if we can't float it
       ret = 0
       strep = float(x)
       (whole, fraction) = strep.split('.')
       if int(fraction) > 0:
           ret += len(fraction)
       if int(whole) > 0:
           ret += len(whole)

 ... I think that should do it.  We could explicitly trim leading zeros
 from the whole number part and trailing zeros from the fractional
part.
 However I think the string representation (in Python's built-ins)
 guarantees us that there will be no leading or trailing zeros unless
 the part we're looking at is numerically equivalent to zero.

JimD



From skip at pobox.com  Mon May 23 13:38:47 2005
From: skip at pobox.com (Skip Montanaro)
Date: Mon, 23 May 2005 12:38:47 -0500
Subject: execution error
In-Reply-To: <3fehq6F7flfgU1@individual.net>
References: <3fehq6F7flfgU1@individual.net>
Message-ID: <17042.5415.497231.774470@montanaro.dyndns.org>


    Ximo> And my question is how can show the execution error whitout exit
    Ximo> of the program, showing it in the error output as

You need to catch ZeroDivisionError.  Here's a trivial example:

    >>> try:
    ...   6/0
    ... except ZeroDivisionError:
    ...   print "whoops! divide by zero..."
    ... 
    whoops! divide by zero...

Skip


From rhall at thiess.com.au  Wed May 18 09:57:40 2005
From: rhall at thiess.com.au (Bloke)
Date: 18 May 2005 06:57:40 -0700
Subject: SSL (HTTPS) with 2.4
In-Reply-To: <1116424363.953180.79260@g47g2000cwa.googlegroups.com>
References: <1116392416.139727.84630@g49g2000cwa.googlegroups.com>
	<428AD4D1.8030405@v.loewis.de>
	<1116396878.995648.206820@g49g2000cwa.googlegroups.com>
	<1116406256.213128.68180@f14g2000cwb.googlegroups.com>
	<grGie.3984$uR4.2802@newsread2.news.atl.earthlink.net>
	<1116422715.320683.228810@g49g2000cwa.googlegroups.com>
	<1116424363.953180.79260@g47g2000cwa.googlegroups.com>
Message-ID: <1116424660.917136.79680@g47g2000cwa.googlegroups.com>

Following my above comment, if my script works with http, then what is
the problem with https, even when I change the ProxyHandler to specify
https?



From mauriceling at acm.org  Mon May  2 22:25:23 2005
From: mauriceling at acm.org (Maurice LING)
Date: Tue, 03 May 2005 12:25:23 +1000
Subject: So many things that need to be decided....
References: <G3Ade.1022$fF6.12717@news1.mts.net>
Message-ID: <d56nen$m7c$1@domitilla.aioe.org>

Hi,

It seems that you are just starting on Python, same as my situation a 
year ago. After almost going down the same route as you do, I tell 
myself.... just start on something. You can decide on everything but by 
the time you've decided, everything changes again.

Initially, I started on Java then came to Python. Ok, now you've decided 
on Python, GUI library and Editor isn't an issue. Despite all the 
negativities with PyDev with Eclipse, I am still using it.

I really don't see why you should lay everything in stone before you 
start. Things may or may not fall into place. Worry about it when it 
worries you.

"do not distress yourself with imaginings" -desiderata

Good luck.

Cheers
maurice

Heather Stovold wrote:
> Wow - deciding to program in python sure requires a lot of decisions!
> 
> So far:
> 
> I've decided on python for the programming language.
> I've decided on wxpython for the GUI....
> I've decided on DrPython for the Editor....
> 
> I still need to decide on a database........   I've really only used Access,
> and my SQL skills aren't that great.  It would also need to be free....
> Any suggestions??
> 
> Am I going to need a program/package for a report writer?  or that might
> depend on the database I use?
> 
> I've never had to make so many decisions to program in my life, because I've
> generally only had a couple of options, or those options were decided by
> other people.
> 
> I really appreciate the help this newsgroup has provided - both for my
> previous post - and for the reading of other posts I've done.   I'm sure
> I'll have a million more questions soon!
> 
> Thanks for the help!
> 
> Heather
> 
> 
> 
> 


From m at m.com  Wed May  4 03:35:52 2005
From: m at m.com (monkey)
Date: Wed, 4 May 2005 15:35:52 +0800
Subject: OOPS concept
References: <mailman.140.1115190179.6583.python-list@python.org>
Message-ID: <42787b58$1_2@rain.i-cable.com>

Try this online book, it may help, the url is:  http://www.byteofpython.info

> Hi all,
>
> Is there any good step by step online tutorial on OOPS concepts in python
?
> i have checked some on the python.org.__doc__ page but couldnt make much
sense.  especially i need help on newstyle classes.
>
> regards,
> KM




From aisaac0 at verizon.net  Wed May 25 23:33:32 2005
From: aisaac0 at verizon.net (David Isaac)
Date: Thu, 26 May 2005 03:33:32 GMT
Subject: evaluated function defaults: stored where?
Message-ID: <gsble.1244$m%3.385@trnddc02>

Default parameter values are evaluated once when the function definition is
executed.
Where are they stored?  (A guess: in a dictionary local to the function.)
Where is this documented?

As a Python newbie I found this behavior quite surprising.
Is it common in many other languages?
Is it unsurprising if I look at it right?

Thanks,
Alan Isaac




From bhoel at despammed.com  Tue May 31 16:40:19 2005
From: bhoel at despammed.com (=?utf-8?q?Berthold_H=C3=B6llmann?=)
Date: Tue, 31 May 2005 22:40:19 +0200
Subject: avl tree
References: <pan.2005.05.30.15.30.09.93892@gmail.com>
	<m27jhg7ci2.fsf@despammed.com>
	<pan.2005.05.31.07.17.55.351571@gmail.com>
Message-ID: <m21x7nrux8.fsf@despammed.com>

Zunbeltz Izaola <zunbeltz at gmail.com> writes:

> On Mon, 30 May 2005 21:13:57 +0200, Berthold H?llmann wrote:
>
>> 
>> I'm afraid you won't be happy with the code. It's very old and likely
>> won't compile. We have an inhouse version of this module which
>> compiles and run on Sparc solaris (32 Bit) and linux x86 with Python
>> up to 2.4. I fixed some warnigs just today for compilation on Linux
>> x86_64, it also seems to work on this platform now. Installation is
>> setup.py based. I'm quite sure we once sent patches to Sam Rushing,
>> but they never made it into his release. I'll try to publish our
>> version the next days. 
>
> Thanks. I will be looking forward to the release.

You can grab it from 

  <http://starship.python.net/~bhoel/avl-2.1.0.tar.gz>

Please report any problems to me. I'll do my best to solve them.

Regards,
Berthold
-- 
berthold at xn--hllmanns-n4a.de / <http://h?llmanns.de/>
bhoel at web.de                 / <http://starship.python.net/crew/bhoel/>


From xah at xahlee.org  Fri May  6 19:55:51 2005
From: xah at xahlee.org (Xah Lee)
Date: 6 May 2005 16:55:51 -0700
Subject: New Python regex Doc (was: Python documentation moronicities)
References: <1113301533.054410.203710@z14g2000cwz.googlegroups.com>
	<mailman.1813.1113355346.1799.python-list@python.org>
	<1113856843.023012.165500@l41g2000cwc.googlegroups.com>
	<1113908069.264676.207090@g14g2000cwa.googlegroups.com>
	<1115328523.852744.110390@f14g2000cwb.googlegroups.com>
Message-ID: <1115423751.016177.250650@o13g2000cwo.googlegroups.com>

HTML Problems in Python Doc

I don't know what kind of system is used to generate the Python docs,
but it is quite unpleasant to work with manually, as there are
egregious errors and inconsistencies.

For example, on the ?Module Contents? page (
http://python.org/doc/2.4.1/lib/node111.html ), the closing tags for
<dd> are never used, and all the tags are in lower case. However, on
the regex syntax page ( http://python.org/doc/2.4.1/lib/re-syntax.html
), the closing tages for <dd> are given, and all tages are in caps.

The doc's first lines declare a type of:
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">

yet in the files they uses "/>" to close image tags, which is a XHTML
syntax.

the doc litters <p> and never closes them, making it a illegal
XML/XHTML by breaking the minimal requirement of well-formedness.

Asides from correctness, the code is quite bloated as in generally true
of generated HTML. For example, it is littered with: <tt id='l2h-853'
xml:id='l2h-853'> which isn't used in the style sheet, and i don't
think those ids can serve any purpose other than in style sheet.

Although the doc uses a huge style sheet and almost every tag comes
with a class or id attribute, but it also profusively uses hard-coded
style tags like <b>, <big> and Netcsape's <nobr>.

It also abuse tables that effectively does nothing. Here's a typical
line:
<table cellpadding="0" cellspacing="0"><tr valign="baseline">
  <td><nobr><b><tt id='l2h-851' xml:id='l2h-851'
class="function">compile</tt></b>(</nobr></td>
  <td><var>pattern</var><big>[</big><var>,
flags</var><big>]</big><var></var>)</td></tr></table>


If Python is supposed to be a quality language, then its
documentation's content and code seems indicate otherwise.
-----------------------

This email is archived at:
http://xahlee.org/perl-python/re-write_notes.html

 Xah
 xah at xahlee.org
? http://xahlee.org/


?



From eee at nmt.edu  Mon May 16 09:10:32 2005
From: eee at nmt.edu (Earl Eiland)
Date: Mon, 16 May 2005 07:10:32 -0600
Subject: command string good in subprocess.Popen(string) fails in
	process.Process(string)
Message-ID: <1116249032.27141.624.camel@dulcevida>


The command string consists of "filename.exe  instruction1 instruction2
..."  It works in subprocess, but in process, returns the error "can't
find the file instruction1".

How do I pass command line instructions in process.Process?  I tried a
list ['filename.exe', 'instruction1 instruction2 ...'] with the same
result.

If you're wondering why I'm switching, it's because I'm working with a
poorly behaved 3rd party program that causes a severe memory leak, and I
need the process modules timed "wait(n)" method (or write my own).

Earl



From exarkun at divmod.com  Thu May 12 16:58:37 2005
From: exarkun at divmod.com (Jp Calderone)
Date: Thu, 12 May 2005 20:58:37 GMT
Subject: Escape spaces in strings
In-Reply-To: <d60fgh$oqr$04$1@news.t-online.com>
Message-ID: <20050512205837.15422.171030083.divmod.quotient.35162@ohm>

On Fri, 13 May 2005 00:49:21 +0200, Florian Lindner <florian.lindner at xgm.de> wrote:
>Hello,
>is there a function to escape spaces and other characters in string for
>using them as a argument to unix command? In this case rsync
>(http://samba.anu.edu.au/rsync/FAQ.html#10)
>
>Thx,
>
>Florian

  Yes, but you don't want to use them.  Instead, use a process launching function which doesn't smoosh arguments together into a single string which then needs to be parsed.  For example, os.execl, os.spawnl, or subprocess.call.

  Jp


From enderkanchou at gmail.com  Mon May  2 19:05:39 2005
From: enderkanchou at gmail.com (Anthony)
Date: 2 May 2005 16:05:39 -0700
Subject: python and os.system() failure
In-Reply-To: <d53q3v$big$1@gemini.csx.cam.ac.uk>
References: <mailman.48.1114820047.14961.python-list@python.org>
	<d53q3v$big$1@gemini.csx.cam.ac.uk>
Message-ID: <1115075139.022119.321880@l41g2000cwc.googlegroups.com>

Thanks for the tip on strace. I will look into it.

I only have a tempfile object:

tmp = tempfile.mkstemp(dir="/var/tmp/")

I will try to explicitly call a close() or whatever the syntax is to
finalize the object to deletion by garbage collection.

Thanks,

Kenny



From adu_thoma at yahoo.com  Thu May  5 16:03:44 2005
From: adu_thoma at yahoo.com (thomas ct)
Date: Thu, 5 May 2005 13:03:44 -0700 (PDT)
Subject: UnicodeDecodeError 
Message-ID: <20050505200344.50040.qmail@web52209.mail.yahoo.com>

Hi Fredrik

 

Sorry that I confused u 
Thomas Thomas wrote:

>there's no way the tuple creation will generate a UnicodeDecodeError
>all by itself.  are you sure the error occurs on that line?

u r right, the error is not generated in tuple creation . it generated where join the strings at the line 
 
body = CRLF.join(L)

what i was trying to say was how the various tuples behave..if i use
 
file = ('file', filename, data)  #it gives me unicode error
in this case I am using binary data..
 
file = ('file', filename, 'data'*100)
but the same filename works fine if i pass text data
 
file = ('file', 'test.pdf', data)
 
so if hardcode the file name /use 
filename=filename.encode("ascii") things work with binary data as well..
 
I was wondering why..
 
thanks 
Thomas

import httplib, mimetypes
import os;

def get_content_type(filename):
    return mimetypes.guess_type(filename)[0] or 'application/octet-stream'



filepath= 'c:/Documents and Settings/Administrator/Desktop/tmp/test.pdf';
f = open(filepath, "rb")
data = f.read()
f.close()

(filedir, filename) = os.path.split(filepath)
filename=unicode(filename);
#file = ('file', filename, data)  #This won't work will give a UnicodeDecodeError: 'ascii' codec can't decode byte 0xc7 in position 10: ordinal not in range(128)
file = ('file', filename, 'data'*100) #this will work fine
#file = ('file', 'test.pdf', data) #This also works fine
files = [file]
CRLF = '\r\n'
L = []
for (key, filename, value) in files:
    L.append('Content-Disposition: form-data; name="%s"; filename="%s"' % (key, filename))
    L.append(value)
body = CRLF.join(L)




		
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From danb_83 at yahoo.com  Wed May 11 02:08:16 2005
From: danb_83 at yahoo.com (Dan Bishop)
Date: 10 May 2005 23:08:16 -0700
Subject: windows directories for curr user
References: <1115769947.020454.170340@f14g2000cwb.googlegroups.com>
Message-ID: <1115791696.278982.56430@g43g2000cwa.googlegroups.com>

flamesrock wrote:
> Hi,
>
> Short, maybe newbish question: Is there a python method for finding
out
> who the current user is in the OS module?
>
> On older windows machines the directory I'm interested in is just
> "c://my documents", but how do I walk to the current users my
documents
> folder?

path = '%s\\My Documents' % os.environ['USERPROFILE']



From dale.hagglund at gmail.com  Tue May 31 01:24:47 2005
From: dale.hagglund at gmail.com (Dale Hagglund)
Date: Mon, 30 May 2005 23:24:47 -0600
Subject: prime number
References: <1117421732.677244.237730@g49g2000cwa.googlegroups.com>
	<86wtphtm3f.fsf@guru.mired.org>
	<1117435844.389867.193900@g49g2000cwa.googlegroups.com>
Message-ID: <86ekboarxc.fsf@ponoka.ed.shawcable.net>

    lostinpython> I'm having trouble writing a program that figures
    lostinpython> out a prime number.  Does anyone have an idea on how
    lostinpython> to write it?  

[I can't quite tell from your posts what your level of programming
knowledge is, so I've aimed low.  If this was wrong, please accept my
apologies. --rdh]

It's not quite clear precisely what the problem is. Do you want to
find all primes less than some number N, or find the prime
factorization of some input number, or something else altogether?  Are
there any other constraints?  Ie, does the program have to be
recursive?

I'm going to assume that you want to find all primes less than N, and
that are no constraints on the form of the program.  

First, pretend you have a function called "is_prime".  It will look
something like this:

        def is_prime(n):
            # return True if n is prime, False otherwise
            # magic goes here

If we had this function, the our main program would look something
like this:

        N = 20
        for n in range(1, N+1):
            if is_prime(n):
               print n

NOTE: range(1,N+1) returns a list of numbers from 1 to N inclusive.

The question now is how to fill in the missing part of is_prime.  In
your original post, you noted that n>2 is prime if no number between 2
and sqrt(n) inclusive divides into n evenly.

This tells us that we have to test a list of possible factors for
divisibility into n.  Ignoring, for a little while, how we figure out
the possible factors, we can now expand is_prime as follows:

        def is_prime(n):
            # return 1 if n is prime, 0 otherwise
            from math import sqrt
            for i in possible_factors:
                # if i divides n, n isn't prime
            # if no i divided into n, ie, we fell out of the loop, 
            # n is prime

The possible factor i divides into n if n % i == 0.  Once we've
decided that n is or isn't prime, we can just return True or False
respectively.  Adding these details:

        def is_prime(n):
            # return 1 if n is prime, 0 otherwise
            from math import sqrt
            for i in possible_factors:
                if n % i == 0:
                    return True
            return False   

The final step is to figure out the list of possible factors.  By the
definition, this is the list of integers from 2 to the integer value
of sqrt(n), inclusive.  To get this list, we can use the range
function again, assuming that sqrt(n) to compute the square root for
us.  The list of possible factors is given by

        range(2, int(sqrt(n)) + 1)

The final trick to is to get the definition of sqrt.  It turns out
that this function is defined in the math module.  Adding the bit of
syntax needed to access the sqrt function, we have:

        def is_prime(n):
            # return 1 if n is prime, 0 otherwise
            from math import sqrt
            for i in range(2, int(sqrt(n)) + 1):
                if n % i == 0:
                    return False
            return True

Put together with the main program above, this will print out a list
as follows:

        1
        2
        3
        5
        7
        11
        13
        17
        19

However, there's a slight problem here.  By definition, 1 is not a
prime.  We could fix this a couple of ways.  Either we could change
the main program not to start its range with 1, or we can fix
is_prime.  The latter is simple:

        def is_prime(n):
            # return 1 if n is prime, 0 otherwise
            from math import sqrt
            if n == 1:
                return False
            for i in range(2, int(sqrt(n)) + 1):
                if n % i == 0:
                    return False
            return True

Another algorithm mentioned in the followups to your posting is the
Sieve of Eratosthenes, named for its ancient Greek discoverer.  You
can find a description of the Sieve in many places on the web.  Trying
to implement it might be a good next step.

Dale.



From f.geiger at vol.at  Sat May 14 08:22:03 2005
From: f.geiger at vol.at (F. GEIGER)
Date: Sat, 14 May 2005 14:22:03 +0200
Subject: wxTimer problem
References: <mailman.20.1115985868.29328.python-list@python.org>
Message-ID: <d64qgr$r9n$1@news.hispeed.ch>

As Jp asked already: "indepenedent" from what?

I do such things all the time in a wx-App that controls a 6-axes robot. For
example, there I have a LED-Widget for displaying the actual pos. and
orient. of the tool. In a wxTimer handler I read OPC variables, whose values
are displayed in the LED-Widgets (the 6 LED-widgets make up a compound
widget that does the data retreival in a wxTimer handler).  My app is full
of widgets that own a timer to display current values.

As for "independent": If you wrote a GUI app in wx you'll want to display
those values coming from some COM objects. So simply tie a timer to the
widget that should display it and - do it. Or tie it to the frame containing
your widget. It's up to you - plenty of possibilities in wx/Python, and
total freedom (I know what I'm speakin' of, I started that app in VB...).

Kind regards
Franz GEIGER

"Jp Calderone" <exarkun at divmod.com> schrieb im Newsbeitrag
news:mailman.20.1115985868.29328.python-list at python.org...
> On Fri, 13 May 2005 14:57:26 +0800, Austin <miniaustin at gmail.com> wrote:
> >I wrote a GUI program on windows. (python & wxPython)
> >One function is to refresh the data from the COM Object continously.
> >In the beginning, I used the thread.start_new_thread(xxx,())
> >But no matter how i try, it will cause the win32com error.
> >
> >After that, i use the wx.Timer to do the refresh function.
> >It works fine, but i find one problem.
> >I think timer should be independant, just like thread, but wxTimer
doesn't.
> >
> >1. Does python have timer function( not included by thread)?
> >2. About the wxTimer, does any parameter to let it be independent?
> >
>
>   What does "independent" mean?
>
>   Jp




From plsullivan63 at gmail.com  Fri May 13 11:15:44 2005
From: plsullivan63 at gmail.com (plsullivan63 at gmail.com)
Date: 13 May 2005 08:15:44 -0700
Subject: newbie - insert variable in pathname
Message-ID: <1115997344.519956.257990@z14g2000cwz.googlegroups.com>

Hello all,
I have a username variable luser:

luser = win32api.GetUserName

I need to insert it into the following to replace the hardcoded
"johndoe" in the pathname of GIS.GIS.Parcels:

GIS_GIS_Parcels = "Database
Connections\\johndoe at GIS_srv-earth.sde\\GIS.GIS.Cadastral\\GIS.GIS.Parcels"
 
Thanks in advance,
plsullivan



From ivoras at _-_fer.hr  Mon May 16 18:16:11 2005
From: ivoras at _-_fer.hr (Ivan Voras)
Date: Tue, 17 May 2005 00:16:11 +0200
Subject: Resizing VListBox on parent (wxPython)
In-Reply-To: <d69n2f$qe3$1@bagan.srce.hr>
References: <d68n5m$hqk$1@bagan.srce.hr> <d69n2f$qe3$1@bagan.srce.hr>
Message-ID: <d6b63q$7dr$1@bagan.srce.hr>

Solved - I didn't know the importance of "proportion" parametar.


From peter at engcorp.com  Wed May  4 07:25:46 2005
From: peter at engcorp.com (Peter Hansen)
Date: Wed, 04 May 2005 07:25:46 -0400
Subject: py2exe and library.zip
In-Reply-To: <mailman.129.1115156250.6583.python-list@python.org>
References: <mailman.76.1115095357.6583.python-list@python.org>	<5uadnUTTqv6Iw-rfRVn-qw@powergate.ca>
	<mailman.129.1115156250.6583.python-list@python.org>
Message-ID: <maednQTrx_iJLOXfRVn-hA@powergate.ca>

Timothy Smith wrote:
> Peter Hansen wrote:
>> Anything's possible.  Maybe you could explain what you're actually 
>> trying to accomplish (or the reasons) so we can better understand 
>> where you're going with this...
>>
> exactly what i just stated, i don't want py2exe to zip up it's 
> library's, but to put them in a sub dir.
> the reason for this, is so that when users login and update from svn, 
> they only have to download some tiny pyc files, not a great big zip file 
> with everything in it ( 99% of which never changes)

More detail on this version control thing would probably help.  (Things 
like that are why I asked fo more background... "exactly what I stated" 
isn't as useful as something like (for example) "I want my app users to 
use Subversion to retrieve updates to the application without having to 
download a big zip file".)

Do you know that Subversion has (as I understand it) a fairly 
intelligent binary file comparison routine, and it will (again, as I 
understand it) not transmit the entire contents of the zip file but 
would actually send only the portions that have changed?  At least, 
that's if the file isn't compressed in some way that prevents this 
algorithm from working well.  (Note to self: check if zip files that can 
be in sys.path can be compressed, and if py2exe compresses them.)

Anyway, while this sort of thing isn't directly supported (probably 
since almost nobody would want to do it, for reasons similar to what 
Simon has explained), you should be able to work it out yourself.  The 
.exe produced by py2exe contains a "stub" executable that basically sets 
  sys.path to point to the .zip file, then runs the main .py which has 
been integrated into the .exe file (not even compiled to a .pyc, just 
like normal).  If you modify your main .py to adjust sys.path to point 
to an external subdirectory, you should be able to leave .py files (or 
.pyc files) there and use svn to update them.

I'll leave it as an exercise for the reader (mainly because I don't know 
how to do it offhand) what you should do to prevent py2exe from putting 
all your files in its zip.  It should probably still put the standard 
library modules there, since otherwise you'd have little reason to be 
using py2exe in the first place...

-Peter


From cf_1957 at hotmail.com  Sat May 14 07:54:28 2005
From: cf_1957 at hotmail.com (chris)
Date: Sat, 14 May 2005 11:54:28 GMT
Subject: 80 bit precision ?
References: <mailman.50.1116011033.29328.python-list@python.org>
Message-ID: <UFlhe.2578$E7.1804@news-server.bigpond.net.au>


"km" <km at mrna.tn.nic.in> wrote in message
news:mailman.50.1116011033.29328.python-list at python.org...
> Hi all,
>
> does python currently support 80 bit precision  Floating Point Unit ?
>
> regards,
> KM

I've just been using the decimal module for Python 2.3 (native in Python
2.4) at 100 digit precision to solve some very high order polynomials. Slow
but worked well for me. Also used a rational.py module ported to Py 2.3.
Perhaps you can do your calcs to the precision you want with a combination
of decimal and rational arithmetic.

bwaha




From mhartl at post.harvard.edu  Wed May 11 00:38:28 2005
From: mhartl at post.harvard.edu (Michael Hartl)
Date: 10 May 2005 21:38:28 -0700
Subject: Need a little parse help
References: <mailman.310.1115747834.29826.python-list@python.org>
	<1115756261.255249.299870@f14g2000cwb.googlegroups.com>
	<1115767302.830054.143810@f14g2000cwb.googlegroups.com>
	<86br7imw8e.fsf@guru.mired.org>
Message-ID: <1115786308.377253.261750@o13g2000cwo.googlegroups.com>

Mike mentions an important point, and I've been bitten by the
phenomenon Mike mentions---but only when *writing* to files.  They
should always be closed explicitly, as in

f = file(filename, 'w')
f.write(somestring)
f.close()

On the other hand,  I've never encountered a problem with the "for line
in file(filename)" idiom.  A similar time-saver is writing something
like

s = file(filename).read()

which puts the entire file as a string in the variable s.  In this
case, as in the file iteration case, we save two lines of code and one
variable.  It may not sound like much, but

f = file(filename)
s = f.read()
f.close()

seems much more cumbersome to me, especially when doing a lot of file
reads.

In short, my experience is that explicitly closing a file is
unnecessary when reading.  I could be wrong, though, and I'd be very
interested to see an example of either idiom above leading to problems.

Michael

--
Michael D. Hartl, Ph.D.
CTO, Quark Sports LLC
http://quarksports.com/



From sklass at pointcircle.com  Thu May 19 18:22:02 2005
From: sklass at pointcircle.com (rh0dium)
Date: 19 May 2005 15:22:02 -0700
Subject: Convert from numbers to letters
In-Reply-To: <86wtpvymnt.fsf@guru.mired.org>
References: <1116511005.900715.107260@o13g2000cwo.googlegroups.com>
	<1116519193.037429.93560@o13g2000cwo.googlegroups.com>
	<1116529140.470352.129690@z14g2000cwz.googlegroups.com>
	<mailman.224.1116530388.8733.python-list@python.org>
	<86wtpvymnt.fsf@guru.mired.org>
Message-ID: <1116541322.860087.319940@f14g2000cwb.googlegroups.com>

Now can you reverse this process tuple2coord??

Thats what I'm really after :)



From michael at stroeder.com  Sun May  8 06:58:11 2005
From: michael at stroeder.com (=?ISO-8859-1?Q?Michael_Str=F6der?=)
Date: Sun, 08 May 2005 12:58:11 +0200
Subject: Active Directory Modules?
In-Reply-To: <1115548173.613128.33120@g14g2000cwa.googlegroups.com>
References: <1115548173.613128.33120@g14g2000cwa.googlegroups.com>
Message-ID: <4v71l2-v3a.ln1@nb2.stroeder.com>

Harlin Seritt wrote:
> Does anyone know if there are any Python Active Directory Modules out
> there?

You could use ADSI with python-win32.

> I looked at LDAP module but there is no version for Python 2.4

Off course python-ldap works with Python 2.4. There are even Win32
binaries for Python 2.4:

http://www.siosistemi.it/~mcicogni/

> and it's support for Active Directory seems to be lacking a bit.

Can you please elaborate about what is missing? I'm using python-ldap
with Active Directory just fine. Compared to ADSI you have to program
more LDAP-oriented off course.

On Linux/Unix you can even use SASL/GSSAPI bind if the OpenLDAP libs
wrapped by python-ldap were built with support for SASL and Kerberos.

Ciao, Michael.


From rrr at ronadam.com  Sun May 15 22:39:07 2005
From: rrr at ronadam.com (Ron Adam)
Date: Sun, 15 May 2005 22:39:07 -0400
Subject: Precision?
In-Reply-To: <4287A237.7090000@ronadam.com>
References: <1116165159.269252.117830@g14g2000cwa.googlegroups.com>	<4287565c$0$24223$636a15ce@news.free.fr>
	<4287A237.7090000@ronadam.com>
Message-ID: <428807CB.1070300@ronadam.com>

Ron Adam wrote:

> tiissa wrote:
> 
>>Steffen Gl?ckselig wrote:
>>
>>
>>>>>>1.0 + 3.0 + 4.6
>>>
>>>8.5999999999999996
>>>
>>>Ehm, how could I get the intuitively 'correct' result of - say - 8.6?
>>>;-)
>>
>>
>>You may find annex B of the python tutorial an interesting read:
>>http://docs.python.org/tut/node16.html
> 
> 
> In addition to what you find in the above link, the round function can 
> be used.
> 
> p = 1	#digits of precision after decimal
> a, b, c = 1.0, 3.05, 4.6
> print round(a+b+c,p)
> 
> -> 8.6
> 
> You also have the option to use the print statements '%' operator to 
> format the output.
> 
> 
> a, b, c = 1.0, 3.05, 4.6
> print "%.1f"%(a+b+c)
> 
> -> 8.6
> 
> 
> _Ron

Just to clarify this, It was pointed out to me that round() doesn't 
resolve the problem of floating points, and I agree. (Thanks Fredrik)

 >>>round(1.0+3.05+4.6,1)
8.5999999999999996

The print statement displays it as 8.6.

The only way to avoid the problem completely is by using an alternative 
numeric system such as decimal.

What rounding and print formatting do is give you some control within 
the specifications of your requirements.  Print for display purposes, 
and round to minimize errors to within the needed precision.

 >>> for y in range(1000000):
...     x += 1.6
...
 >>> x
1600001.6000213262

Eventually this could be significant.

 >>> for y in range(1000000):
...    x = round(x+1.6,1)
...
 >>> x
3200001.6000000001

Here the error has been kept to a minimum.  In most cases, it isn't a 
problem, but it is something to be aware of.  It does matter in banking 
and I beleive there are standard ways of dealing with it.

Cheers,
_Ron




From guettli at thomas-guettler.de  Tue May 17 10:18:33 2005
From: guettli at thomas-guettler.de (Thomas Guettler)
Date: Tue, 17 May 2005 16:18:33 +0200
Subject: best way to do this ...
References: <1116332775.964419.168370@o13g2000cwo.googlegroups.com>
Message-ID: <pan.2005.05.17.14.18.32.560989@thomas-guettler.de>

Am Tue, 17 May 2005 05:26:15 -0700 schrieb Tonino:

> Hi ALL,
> 
> I am having a issue with a particular storage of data problem and
> wanted to know if I am going about it the wrong way.
> 
> I have a list of reference numbers associated with a product and I have
> a socket that listens on a port.  Now what happens is the client app
> connects to the server - sends the product and the associated ref
> numbers (there are a few per product). I need to be able to store these
> in a data  structure so that when the same product is called again  -
> it can display the ref numbers for that product.

The smallest database is the filesystem. Create a directory for every
product. Store the references in a file in this directory.

> 
>     for a in Detail:
> RuntimeError: dictionary changed size during iteration

I did not see any dict in your code, but this message means, that you
can't change the dictionary in the loop. Maybe this helps:

for a, b in list(mydict.items()):
    ....


 Thomas

-- 
Thomas G?ttler, http://www.thomas-guettler.de/




From jello at comics.com  Fri May  6 10:10:23 2005
From: jello at comics.com (rzed)
Date: Fri, 06 May 2005 10:10:23 -0400
Subject: Setting the corner color in rotated PIL images
References: <Xns964B90C911676jreeder@63.223.7.253>
	<mailman.90.1115377246.29826.python-list@python.org>
Message-ID: <Xns964E67A503820jreeder@63.223.7.253>

"Anthra Norell" <anthra.norell at tiscalinet.ch> wrote in
news:mailman.90.1115377246.29826.python-list at python.org: 

> What do you mean 'is required'? I tend to think that getting
> ahead with a job is what is required. I don't sneer at
> work-arounds if they save time. 
> 
> Frederic
> 
> A somewhat craftier solution, if still pretty hackish, would be
> to go through your image pixel by pixel, look what color each
> one is (color = image.getpixel (here)) and change the ones with
> the wrong color (if color == wrong_color: putpixel (here,
> right_color)). 
>       If the color of  the corners does not occur inside your
>       picture, you 
> can go throught the entire image. Else you'd have to stop
> changing colors at the first occurrence of a pixel that does not
> have the wrong color, coming inward from each of the lateral
> edges. (Code below (untested)). 
>       If you have elements in your picture that not only have
>       the same color 
> as the corners, but also run into them, then you might have to
> refine your code further in order for the inner loop not stray
> into the image. 
> 

[Code snipped]

Yes, that is essentially similar to the slow flood-fill approach I 
used initially. I did in fact make use of your previous suggestion, 
which works but requires oversizing the image, calculating the crop 
rectangle and so on -- not overly difficult, just annoying -- and I 
also use another approach (outlined in another message) that 
involves pasting a rotated copy of the image back onto the original 
under control of a mask. It depends on what I want to see in the 
corners, essentially. And, having coded the workarounds, I get on 
with the process without worrying about it.

But ... it would be nice if I could specify a default solid color 
to replace the black in the corners, and have the rotation take 
place in one operation without resizing and recalculating and 
duplicating images and all. 

Somewhere down in the C code, the "corner" color is being set to 
black. I wouldn't think it would be terribly hard at that stage to 
set those bytes to other values instead, and exposing that color 
through PIL's interface. But I suppose it's more trouble than it's 
worth for Fredrik, or nobody else has been bothered by it, or by 
the lack of a flood-fill function. To me, these are 
uncharacteristically odd omissions from PIL.

-- 
rzed


From hancock at anansispaceworks.com  Wed May 25 16:20:54 2005
From: hancock at anansispaceworks.com (Terry Hancock)
Date: Wed, 25 May 2005 15:20:54 -0500
Subject: Python Impact Analysis Tool ?
In-Reply-To: <1117027674.787033.113730@f14g2000cwb.googlegroups.com>
References: <1117027674.787033.113730@f14g2000cwb.googlegroups.com>
Message-ID: <200505251520.54697.hancock@anansispaceworks.com>

On Wednesday 25 May 2005 08:27 am, dcolford2000 at hotmail.com wrote:
> Is there an impact analysis tool out there that can cross reference
> python -- VB has a couple of these tools (eg. Visual Expert)

I could be wrong, but my first impression is that that must be
VB jargon for something we might know under another name.

What *is* an "impact analysis tool".  Something tells me it has
little to do with the physics of craters, though that's the first
thing that comes to mind. There are a lots of self-documentation
tools for Python, though, starting with the interpreter itself.

--
Terry Hancock ( hancock at anansispaceworks.com )
Anansi Spaceworks  http://www.anansispaceworks.com



From mwm at mired.org  Fri May  6 18:13:52 2005
From: mwm at mired.org (Mike Meyer)
Date: Fri, 06 May 2005 17:13:52 -0500
Subject: hard memory limits
References: <d5f9jl$k6d$1@domitilla.aioe.org>
	<mailman.88.1115374567.29826.python-list@python.org>
	<d5gphu$hij$1@domitilla.aioe.org>
Message-ID: <86d5s457fj.fsf@guru.mired.org>

Maurice LING <mauriceling at acm.org> writes:

> Hi everyone,
>
> thanks for your help.
>
> Yes, I'm using Mac OSX 1.3 with 256MB Ram. Each element in the list is
> a float. The list is actually a retrieved results of document IDs from
> SOAP interface. And Mac OSX does not have 'unlimit' command as shown,
>
> Maurice-Lings-Computer:~ mauriceling$ unlimit
> -bash: unlimit: command not found
> Maurice-Lings-Computer:~ mauriceling$ which unlimit
> Maurice-Lings-Computer:~ mauriceling$ sh unlimit
> unlimit: unlimit: No such file or directory
> Maurice-Lings-Computer:~ mauriceling$

This is a shell builtin command, not an OS X command. For bash, the
command is "ulimit", not "unlimit". You'll need to read the bash man
page for exact details on how to raise your processes memory limits.

Note that the OS X may have a hard limit that you can't exceed except
as root. This can be raised, but it's a global system configuration,
and you'll have to get someone who knows more about  OS X than I do to
tell you how to do that.

        <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From danricofer at gmail.com  Thu May 19 19:45:36 2005
From: danricofer at gmail.com (Daniel)
Date: 19 May 2005 16:45:36 -0700
Subject: import cx_Oracle fails!
References: <1116454404.355741.51730@f14g2000cwb.googlegroups.com>
	<mailman.204.1116506008.8733.python-list@python.org>
Message-ID: <1116546336.235595.19700@o13g2000cwo.googlegroups.com>

Yes dude, it worked! :-)

Thank you very much (Muito obrigado!!!)



From skip at pobox.com  Sun May  8 21:33:05 2005
From: skip at pobox.com (Skip Montanaro)
Date: Sun, 8 May 2005 20:33:05 -0500
Subject: New Python regex Doc
In-Reply-To: <5PqdnTkYZYUvjOPfRVn-uw@powergate.ca>
References: <1113301533.054410.203710@z14g2000cwz.googlegroups.com>
	<mailman.1813.1113355346.1799.python-list@python.org>
	<1113856843.023012.165500@l41g2000cwc.googlegroups.com>
	<1113908069.264676.207090@g14g2000cwa.googlegroups.com>
	<1115328523.852744.110390@f14g2000cwb.googlegroups.com>
	<1115423751.016177.250650@o13g2000cwo.googlegroups.com>
	<1115444726.627426.172260@g14g2000cwa.googlegroups.com>
	<1115508491.462229.294020@o13g2000cwo.googlegroups.com>
	<86hdhes988.fsf@guru.mired.org>
	<5PqdnTkYZYUvjOPfRVn-uw@powergate.ca>
Message-ID: <17022.48593.850234.120985@montanaro.dyndns.org>


    Peter> And which, at least implicitly, defines "greedy" by in section
    Peter> 6.3 titled "Greedy versus Non-Greedy".  It's not perfect, but
    Peter> then nobody in this thread has offered anything even remotely
    Peter> resembling perfect documentation for regular expressions
    Peter> yet. <wink>

In the re syntax page:

    http://www.python.org/dev/doc/devel/lib/re-syntax.html

the *?, +? and ?? operators *, + and ? are described as greedy:

    *?, +?, ??
        The "*", "+", and "?" qualifiers are all greedy; they match as much
        text as possible. Sometimes this behaviour isn't desired; if the RE
        <.*> is matched against '<H1>title</H1>', it will match the entire
        string, and not just '<H1>'. Adding "?" after the qualifier makes it
        perform the match in non-greedy or minimal fashion; as few
        characters as possible will be matched. Using .*? in the previous
        expression will match only '<H1>'.

{m,n}? is also described as a non-greedy version of {m,n} and A|B is
described as never being greedy (if A matches, B is never tried).  Perhaps
there's no explicit definition of the word "greedy" in the context of
regular expressions, but I think that after reading that page most people
will at least have an intuitive notion of the meaning.  If it's still
unclear, a little experimentation should suffice:

    >>> import re
    >>> re.match("(a+)", "aaaaa").group(1)
    'aaaaa'
    >>> re.match("(a+?)", "aaaaa").group(1)
    'a'

In short, I think the re docs are fine as-is w.r.t. the greedy concept.  I
also added a definition to the Python Glossary for good measure:

    http://www.python.org/moin/PythonGlossary

Feel free to amend/enhance/correct as you see fit.  (Feel free to flesh out
any definitions for that matter, especially those with "???" as the
definition.)

Skip


From efoda5446 at yahoo.com  Wed May 18 20:30:58 2005
From: efoda5446 at yahoo.com (Lorn)
Date: 18 May 2005 17:30:58 -0700
Subject: Extracting multiple zip files in a directory
Message-ID: <1116462658.723097.134390@g43g2000cwa.googlegroups.com>

I've been working on this code somewhat succesfully, however I'm unable
to get it to iterate through all the zip files in the directory. As of
now it only extracts the first one it finds. If anyone could lend some
tips on how my iteration scheme should look, it would be hugely
appreciated. Here is what I have so far:

import zipfile, glob, os

from os.path import isfile
fname = filter(isfile, glob.glob('*.zip'))
for fname in fname:
    zf =zipfile.ZipFile (fname, 'r')
    for file in zf.namelist():
        newFile = open ( file, "wb")
        newFile.write (zf.read (file))
        newFile.close() 
    zf.close()



From ivanlan at pauahtun.org  Tue May 31 15:09:01 2005
From: ivanlan at pauahtun.org (Ivan Van Laningham)
Date: Tue, 31 May 2005 13:09:01 -0600
Subject: working with pointers
References: <d7iapk$6ck$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>	<JJSdnXLcZdUsLQHfRVn-1w@comcast.com>
	<d7ibjg$8en$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
	<429CB478.6090803@pythonapocrypha.com>
Message-ID: <429CB64D.9A2A745@pauahtun.org>

Hi All--

Dave Brueck wrote:
> 
> Michael wrote:
> > sorry, I'm used to working in c++ :-p
> >
> > if i do
> > a=2
> > b=a
> > b=0
> > then a is still 2!?
> >
> > so when do = mean a reference to the same object
> 
> Always.
> 
> > and when does it mean make a copy of the object??
> 
> Never.
> 

To which I would add (without attempting to preserve Dave's admirable
brevity):

a=[3,5,6]
b=a

"b" is a reference to a; both b and a are names bound to "[3,5,6]".

a=[3,5,6]
b=a[:]

a and b are now bound to different instances of [3,5,6]

Metta,
Ivan
----------------------------------------------
Ivan Van Laningham
God N Locomotive Works
http://www.andi-holmes.com/
http://www.foretec.com/python/workshops/1998-11/proceedings.html
Army Signal Corps:  Cu Chi, Class of '70
Author:  Teach Yourself Python in 24 Hours


From rkern at ucsd.edu  Thu May 19 02:04:34 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Wed, 18 May 2005 23:04:34 -0700
Subject: What's the use of changing func_name?
In-Reply-To: <311b5ce105051822477c09c81@mail.gmail.com>
References: <311b5ce105051822477c09c81@mail.gmail.com>
Message-ID: <d6ha7v$kh9$1@sea.gmane.org>

could ildg wrote:
> def a(func):
>     def _inner(*args, **kwds):
>         print "decorating..."
>         return func(*args, **kwds)
>     _inner.func_name = func.func_name -->when I delete this line, the
> rusult is the same. why?
>     return _inner
> 
> @a
> def g(*args):
>     for x in args:
>         print x
>     print "this is in function g"
> 
> g(1,2,3,4,5)
> 
> func_name is writable in python 2.4. I wonder what's the use of
> writing it. Consider the code above, to change the func_name or not
> will get the completely same result. The result is as
> below:
> 
> decorating...
> 1
> 2
> 3
> 4
> 5
> this is in function g
> 
> Please tell me how does this happen, thank you~

Well, the function you posted certainly doesn't change the literal 
string you have inside when you change its func_name. However, the 
function object *does* change.

In [1]:def g(x):
    ...:    pass
    ...:

In [2]:g
Out[2]:<function g at 0x5aedf0>

In [3]:g.func_name = 'f'

In [4]:g
Out[4]:<function f at 0x5aedf0>

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From yael at gmx.net  Fri May 13 06:46:13 2005
From: yael at gmx.net (Thomas Pfaff)
Date: Fri, 13 May 2005 12:46:13 +0200
Subject: working directory for debugging in pythonwin
In-Reply-To: <4283A2DE.7030503@sympatico.ca>
References: <3eem0kF2ngvjU1@individual.net> <4283A2DE.7030503@sympatico.ca>
Message-ID: <3ejeq4F3di4bU1@individual.net>

Colin J. Williams schrieb:
> Thomas Pfaff wrote:
> 
>> Hello all,
>>
>> I started using the nice Pythonwin IDE together with Python 2.3 (I have
>> come to prefer its editor to IDLE).
>> My problem is, that when I want to run a script in the debugger, I can
>> give the script name and arguments, but I can't tell it in which
>> directory it should run.
>>
>> I googled this group but didn't find anything helpful so far.
>>
>> I could use some os.chdir in my code, but that's ugly and I neither want
>> to copy the script around to the places where I would like to test it.
>>
>> Any suggestions?
>>
>> Thanks in advance
>>
>>
>> Thomas
> 
> Thomas,
> 
> When you have initiated PythonWin, try opening (^O) the file you wish to
> debug.  By selecting the file directory and file you have chosen the
> current working directory for the file.
> 
> Alternatively, in the Windows Explorer, try right clicking on the py
> file you wish to debug.  One of the options given is likely to be
> PythonWin.
> 
> Colin W.

Well this is what I do not want to do.
I want to have the script in some folder /source/myscript.py but run it
on data in e.g. /path/to/data/ like I would do on the commandline with

$ cd /path/to/data
$ pypthon /source/myscript.py local-file.dat


Cheers,


Thomas


From philippe at philippecmartin.com  Sat May 28 17:26:50 2005
From: philippe at philippecmartin.com (Philippe C. Martin)
Date: Sat, 28 May 2005 21:26:50 GMT
Subject: Getting value of radiobutton trouble
References: <3fs17rF9b8edU1@news.dfncis.de>
	<%35me.194$Dq7.159@newssvr11.news.prodigy.com>
	<3fs5ogF9e2e7U1@news.dfncis.de>
Message-ID: <um5me.3501$4N2.2020@newssvr30.news.prodigy.com>

PS: Since your starting with TKinter, and although I do not know what your
goal is, I suggest you take a look at wxPython: it is _wonderfull_ ! (no
offence to TCL/TK)

Regards,

Philippe






VK wrote:

> Philippe C. Martin wrote:
>> Hi,
>> 
>> I think your second call to Tk() does it: this works although the look is
>> different:
>> 
>> 
>> from Tkinter import *
>> class GetVariant:
>>      def __init__(self):
>>          self.root = Tk()
>>          self.mainframe = Frame(self.root,bg="yellow")
>>          self.mainframe.pack(fill=BOTH,expand=1)
>> 
>>          self.firstframe = Frame(self.mainframe,bg="red")
>>          self.firstframe.pack(side=BOTTOM,expand=1)
>> 
>>          global v
>>          v = StringVar()
>>          self.radiobutton = Radiobutton(self.firstframe,text= "Variant
>> 1", variable=v, value="Variant 1")
>>          self.radiobutton.pack(side=TOP,anchor=W)
>>          self.radiobutton.select()
>>          self.radiobutton = Radiobutton(self.firstframe,text= "Variant
>> 2", variable=v, value="Variant 2")
>>          self.radiobutton.pack(side=TOP,anchor=W)
>>          self.radiobutton = Radiobutton(self.firstframe,text= "Variant
>> 3", variable=v, value="Variant 3")
>>          self.radiobutton.pack(side=TOP,anchor=W)
>> 
>> 
>> 
>>          self.secondframe = Frame(self.mainframe,bg="blue")
>>          self.secondframe.pack()
>>          self.var = Button(self.secondframe,text="What
>> Variant",command=self.call)
>>          self.var.pack(expand=1,side=BOTTOM)
>> 
>> 
>> 
>>      def call(self):
>>          self.variant = v.get()
>>          print 'Input => "%s"' % self.variant
>> 
>> class OneButton:
>>          def __init__(self):
>>              self.root = Tk()
>>              Button(self.root,text="click me",command=self.getvar).pack()
>>          def getvar(self):
>>              a=GetVariant()
>> 
>> d = OneButton()
>> d.root.mainloop()
>> 
>> 
>> 
>> 
>> VK wrote:
>> 
>> 
>>>Hi!
>>>What I'm missing in following code? Cannot get the values of
>>>radiobuttons. Starting only one class (GetVariant), it works. When I put
>>>two classes together, it doesn't.
>>>Regards, VK
>>>
>>>from Tkinter import *
>>>class GetVariant:
>>>     def __init__(self):
>>>         self.root = Tk()
>>>         self.mainframe = Frame(self.root,bg="yellow")
>>>         self.mainframe.pack(fill=BOTH,expand=1)
>>>
>>>         self.firstframe = Frame(self.mainframe,bg="red")
>>>         self.firstframe.pack(side=BOTTOM,expand=1)
>>>
>>>         global v
>>>         v = StringVar()
>>>         self.radiobutton = Radiobutton(self.firstframe,text= "Variant
>>>1", variable=v, value="Variant 1")
>>>         self.radiobutton.pack(side=TOP,anchor=W)
>>>         self.radiobutton.select()
>>>         self.radiobutton = Radiobutton(self.firstframe,text= "Variant
>>>2", variable=v, value="Variant 2")
>>>         self.radiobutton.pack(side=TOP,anchor=W)
>>>         self.radiobutton = Radiobutton(self.firstframe,text= "Variant
>>>3", variable=v, value="Variant 3")
>>>         self.radiobutton.pack(side=TOP,anchor=W)
>>>
>>>
>>>
>>>         self.secondframe = Frame(self.mainframe,bg="blue")
>>>         self.secondframe.pack()
>>>         self.var = Button(self.secondframe,text="What
>>>Variant",command=self.call)
>>>         self.var.pack(expand=1,side=BOTTOM)
>>>
>>>
>>>
>>>     def call(self):
>>>         self.variant = v.get()
>>>         print 'Input => "%s"' % self.variant
>>>
>>>class OneButton:
>>>         def __init__(self):
>>>             self.root = Tk()
>>>             Button(self.root,text="click me",command=self.getvar).pack()
>>>         def getvar(self):
>>>             a=GetVariant()
>>>
>>>d = OneButton()
>>>d.root.mainloop()
>> 
>> 
> 
> Sorry, but I don't get it. There is no deference between my code and
> your answer. I'm beginner...



From jstroud at mbi.ucla.edu  Tue May 17 21:06:36 2005
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Tue, 17 May 2005 18:06:36 -0700
Subject: speeding up Python script
In-Reply-To: <3evgolF56gtkU3@individual.net>
References: <3evgolF56gtkU3@individual.net>
Message-ID: <200505171806.36117.jstroud@mbi.ucla.edu>

You may want to read through this case study by the BDFL.

http://www.python.org/doc/essays/list2str.html

On Tuesday 17 May 2005 05:32 pm, Luis P. Mendes wrote:
> Hi,
>
> I have a 1000 line python script that takes many hours to finish.  It is
> running with six inside 'for' loops.
>
> I've searched the net for ways to speed up the proccess.
>
> Psyco improves performance around 3% in this case which is not good enough.
>
> How can I dramatically improve speed?
>
> I tried to find some tool that converts Python to C automatically but
> couldn't.  As I don't know C, I think that weave and PyInline for
> example are out of the solution.
>
> I'm using Linux.
>
> Luis

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From stewart.midwinter at gmail.com  Tue May  3 11:59:37 2005
From: stewart.midwinter at gmail.com (stewart.midwinter at gmail.com)
Date: 3 May 2005 08:59:37 -0700
Subject: WordPress Python Library 1.0
In-Reply-To: <qbFde.1322731$35.49440903@news4.tin.it>
References: <Rmwde.850131$b5.37722456@news3.tin.it>
	<VKwde.1322130$35.49403624@news4.tin.it>
	<mailman.82.1115102552.6583.python-list@python.org>
	<qbFde.1322731$35.49440903@news4.tin.it>
Message-ID: <1115135977.075884.178750@z14g2000cwz.googlegroups.com>

Caro Michele:

Non parlo italiano, ma parlo espagnol.  I can read your website, and
your library looks interesting.  Would you like me to provide an
english translation of your webpage so that you can provide a version
for english speakers?

I am a WordPress user and a Python programmer so I will be keen to try
out your library.

cheers
S



From lonetwin at gmail.com  Fri May 13 06:45:58 2005
From: lonetwin at gmail.com (Steve)
Date: Fri, 13 May 2005 16:15:58 +0530
Subject: function with variable arguments
In-Reply-To: <965c85e5050513033846beab0@mail.gmail.com>
References: <1115977954.266898.141150@g49g2000cwa.googlegroups.com>
	<965c85e5050513033846beab0@mail.gmail.com>
Message-ID: <5a309bd3050513034523d6159@mail.gmail.com>

On 5/13/05, Wolfram Kriesing <wolfram.kriesing at gmail.com> wrote:
> using default args does actually solve it
> what about
> def Range(n, m=None, step=None)
>   if step==None:
>     if m==None:
>       range(n)
>     else:
<...snip...>
....or better still :

def Range(*args):
    return range(*args)

Regards
Steve

PS: but what do I know, I'm a F'ing imcompetent ass


From phillip.watts at anvilcom.com  Mon May  2 17:37:19 2005
From: phillip.watts at anvilcom.com (phil)
Date: Mon, 02 May 2005 16:37:19 -0500
Subject: compare two voices (Jeremy Bowers)
References: <mailman.139.1115067916.6582.python-list@python.org>
Message-ID: <42769D8F.9070106@anvilcom.com>


>>I am gonna step way out of my mathematical depth here
>>
> 
> I mean no disrespect, but this is the last accurate statement you made.
> 

You are probably correct, I am certainly out of my field and hope
that noone would embark on a hopeless project based on my few words.

However, the school district (and some teachers) tell me that
Rosetta Stone does this quite well (phrasal pronunciation scoring). 
I've heard there are other packages that do as well
This tells me the math has been done.

But you are correct that he would not want to attempt the math himself,
I just think it can probably be found somewhere and MatLab users might
be a good starting point.

Personally, I have done from scratch lots of things which were done 
before and sometimes better.

Anyway, it is a truly fascinating subject.
The true test of whether you are learning a language is whether
native speakers can understand you well, not some computer graded
pronunciation test.  The pattern fitting capabilities of the auditory
regions of the neo-cortex and limbic regions are so awesome we may be
decades away from automating them.  Emulating hundreds of thousands of
synaptic connections and meta-language itself is gonna take a lot of
work.

I will defend one statement though.  I have yet to see anything which
Python would not make a good wrapper for.  Some of the OpenGL pygame
stuff is very cool.



From daniel at dittmar.net  Tue May 10 18:43:53 2005
From: daniel at dittmar.net (Daniel Dittmar)
Date: Wed, 11 May 2005 00:43:53 +0200
Subject: lists in cx_Oracle
In-Reply-To: <pan.2005.05.10.19.45.15.915571@dalkescientific.com>
References: <pan.2005.04.05.18.44.52.434578@dalkescientific.com>
	<pan.2005.04.30.17.02.16.988085@dalkescientific.com>
	<d57rds$mbd$1@news.sap-ag.de>
	<pan.2005.05.10.19.45.15.915571@dalkescientific.com>
Message-ID: <3ecrpvF2fmmjU1@uni-berlin.de>

Andrew Dalke wrote:
> It sounds like you're saying that the interface is actually implemented
> by passing the execute string and a database-specific dictionary-like
> object; the latter created by the DB-API interface.

That's the way it's supposed to work. The program prepares a statement 
with placeholders only once and sends it with varying parameters to the 
database. That way, the statement has to be parsed by the database only 
once and the execution plan can be reused (with Oracle even between 
different sessions). It seems as if nothing ticks Oracle DBAs more off 
than if you're complaining about poor performance, but you're not using 
these prepared statements.

<History>
The :placeholder syntax comes from embedded SQL. You would write the 
names of actual program variables there and a precompiler would generate 
the code to 'bind' the program variables to SQL parameters. Embedded SQL 
has fallen out of favour and new APIs (ODBC, JDBC) use the question mark 
as the placeholder. The principle remains the same for many databases: 
the SQL string is sent unchanged to the database. Additionally, a list 
of actual values is sent for each execution.
</History>

Daniel


From vballsweetheart22 at yahoo.com  Sun May 15 02:59:34 2005
From: vballsweetheart22 at yahoo.com (vballsweetheart22 at yahoo.com)
Date: Sun, 15 May 2005 06:59:34 UTC
Subject: Transparenz ist das Mindeste
Message-ID: <2f64.f0c76fcd3d5f21@yahoo.com>

Lese selbst:
http://www.npd.de/npd_info/deutschland/2005/d0405-39.html


From gdub at ece.utexas.edu  Thu May 19 16:15:59 2005
From: gdub at ece.utexas.edu (Gary Wilson Jr)
Date: Thu, 19 May 2005 15:15:59 -0500
Subject: Convert from numbers to letters
In-Reply-To: <797fe3d405051913022e35c7c6@mail.gmail.com>
References: <1116511005.900715.107260@o13g2000cwo.googlegroups.com>	<mailman.209.1116513780.8733.python-list@python.org>	<1116528750.285895.27720@f14g2000cwb.googlegroups.com>	<mailman.223.1116529228.8733.python-list@python.org>	<1116530403.328825.216120@z14g2000cwz.googlegroups.com>	<mailman.225.1116531601.8733.python-list@python.org>	<d6iqe5$rgt$01$1@news.t-online.com>
	<797fe3d405051913022e35c7c6@mail.gmail.com>
Message-ID: <428CF3FF.8050403@ece.utexas.edu>

Bill Mill wrote:
> On 5/19/05, Peter Otten <__peter__ at web.de> wrote:
> 
>>Bill Mill wrote:
>>
>>
>>>>Traceback (most recent call last):
>>>>File"<stdin>",line1,in?
>>>>NameError: name 'sorted' is not defined
>>>>
>>>>I think you're probably using 2.4 ??
>>>
>>>Yes, sorted() is new in python 2.4 .You could use a very lightly
>>>tested pure-python partial replacement:
>>
>>By the way, sorted() can be removed from your original post.
>>
>>Code has no effect :-)
> 
> 
> I'm gonna go ahead and disagree with you:

Me too, although I would forgo the sort altogether (while making things
a little more readable IMO):

> alpha = 'abcdefghijklmnopqrstuvwxyz'.upper()
> pairs = [''.join((x,y)) for x in alpha for y in [''] + [z for z in alpha]]
> pairs = sorted(pairs, key=len)

alpha = 'abcdefghijklmnopqrstuvwxyz'.upper()
pairs = [x for x in alpha] + [''.join((x,y)) for x in alpha for y in alpha]





From steven.bethard at gmail.com  Sun May 22 14:10:15 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Sun, 22 May 2005 12:10:15 -0600
Subject: A newbie metaclass question
In-Reply-To: <mailman.306.1116756948.8733.python-list@python.org>
References: <mailman.306.1116756948.8733.python-list@python.org>
Message-ID: <acGdnRKMm7yaVg3fRVn-sw@comcast.com>

could ildg wrote:
> When I try to learn metaclass of python by article at this place:
> http://www.python.org/2.2/descrintro.html#metaclasses,
> I changed the autosuper example a little as below:
> <code>
> class autosuper(type):
>     def __init__(cls,name,bases,dict):
>         super(autosuper,cls).__init__(name,bases,dict)
>         setattr(cls,"_%s__super" % name, super(cls))
>         print "in metaclass: ", super(cls)
>         
> class A:
>     __metaclass__ = autosuper
>     def meth(self):
>         print "in class A: ", self.__super
>                 
> a=A()
> a.meth() 
> </code>
> The result is as below:
> in metaclass:  <super: <class 'A'>, NULL>
> in class A:  <super: <class 'A'>, <A object>>

The reason for this is that the super object is a descriptor.  This 
means that
     self.__super
actually calls something like:
     type(self).__super.__get__(self)
So the difference in the two is that the "in metaclass" print references 
the unbound super object, and the "in class A" print references the 
bound super object.

A very simple demonstration of this:

py> class C(object):
...     pass
...
py> C.sup = super(C)
py> C.sup
<super: <class 'C'>, NULL>
py> C().sup
<super: <class 'C'>, <C object>>
py> C.sup.__get__(C())
<super: <class 'C'>, <C object>>

Note that we get the "NULL" output when we ask the *class* for the "sup" 
object.  We get the "C object" output when we ask an *instance* for the 
"sup" object.  The example using __get__ is basically just the explicit 
version of the one that doesn't use __get__.

HTH,

STeVe


From dimitri.pater at gmail.com  Mon May  2 03:10:34 2005
From: dimitri.pater at gmail.com (dimitri pater)
Date: Mon, 2 May 2005 09:10:34 +0200
Subject: Displaying formatted - data with TKinter
In-Reply-To: <1114999819.728730.54930@o13g2000cwo.googlegroups.com>
References: <1114999819.728730.54930@o13g2000cwo.googlegroups.com>
Message-ID: <e75321bd050502001069d1d115@mail.gmail.com>

hello,
take a look at the multilistbox:
http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/52266
http://www.haucks.org/download/MultiListbox.py.gz

I use it for this purpose, it looks quite nice

regards,
Dimitri

On 1 May 2005 19:10:19 -0700, custard_pie <ckwiguno at gmail.com> wrote:
> 
> Hi,..I found it difficult to display data from a dictionary using GUI.
> What widget should I use? I tried using text widget, but I couldn't get
> the display I want. I need the display to look like this
> 
> file name size age location
> ====================================================
> fdssfdfsa 30 34 safasfafsfdsa
> asdfafdsafs 45 56 asdffdsafsd
> 
> And I'm getting the display from inside a dictionary that holds list as
> its value. Any suggestion on what I should use to display the data in
> that format??
> 
> --
> http://mail.python.org/mailman/listinfo/python-list
> 



-- 
Please visit dimitri's website: www.serpia.com <http://www.serpia.com>
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From bgporter at acm.org  Tue May 17 08:47:14 2005
From: bgporter at acm.org (Brett g Porter)
Date: Tue, 17 May 2005 08:47:14 -0400
Subject: Python forum
In-Reply-To: <4289B462.10804@softhome.net>
References: <4289B462.10804@softhome.net>
Message-ID: <4289E7D2.80303@acm.org>

Jonas Melian wrote:
> Hi,
> 
> I'm going to say a suggestion, why don't you create a forum like the one
> of Ruby (http://www.rubyforums.com/)? for the novices this is a great
> help, better than a mail list
> 
> It's also worth noting that rubyforums.com has nearly no posts (six
> total) because it takes very just a short time working.
> 
> I know that you have python-list, it's both an email and a usenet list.
> But I think that a forum is great for the learning. The test is in
> gentoo's forums. They are a lot of experienced people answering
> questions without any problem and it goes very well
> 
> Thanks

Don't forget that there's also the Tutor list (see 
http://www.python.org/mailman/listinfo/tutor ), targeted to people 
looking to learn the language...


-- 
//  Today's Oblique Strategy (? Brian Eno/Peter Schmidt):
//  Change instrument roles
//  Brett g Porter * BgPorter at acm.org



From news at NOwillmcguganSPAM.com  Mon May 23 17:07:17 2005
From: news at NOwillmcguganSPAM.com (Will McGugan)
Date: Mon, 23 May 2005 22:07:17 +0100
Subject: overhead of starting threads
In-Reply-To: <1116880985.778686.72440@g44g2000cwa.googlegroups.com>
References: <4291b2f5$0$24496$da0feed9@news.zen.co.uk>
	<1116880985.778686.72440@g44g2000cwa.googlegroups.com>
Message-ID: <42924606$0$22584$da0feed9@news.zen.co.uk>

Simon Percivall wrote:
> How much you gain by starting threads is also determined by what you're
> doing in those threads. Remember (or learn): In CPython only one thread
> at a time can execute python code, so depending on your task threading
> might gain you little. If you're doing I/O or calling functions written
> in C (and if they release the Global Intepreter Lock [GIL]) you might
> gain a lot by using threads.

I wasn't asking about wether to use threads or not, I already am - for 
several long running partialy I/O bound tasks.

> 
> As for overhead: profile, profile, profile. You'll have to do sample
> runs and find your sweet-spot. It all depends on what you're doing in
> the threads.
> 

I haven't had much luck with the profile module in the standard library. 
  It only shows me data from the main thread. Is there a better way of 
profile heavily threaded code?


Will McGugan

-- 
http://www.willmcgugan.com
"".join( [ {'*':'@','^':'.'}.get(c,None) or chr(97+(ord(c)-84)%26) for c 
in "jvyy*jvyyzpthtna^pbz" ] )


From stephane.bronsart at teledisnet.be  Tue May 17 10:28:44 2005
From: stephane.bronsart at teledisnet.be (StepH)
Date: Tue, 17 May 2005 16:28:44 +0200
Subject: Design Question.  Data Acquisition/Display related.
In-Reply-To: <4289FC69.2020509@quad.com.ar>
References: <4289eae4$0$344$4d4efb8e@read.news.be.uu.net>
	<4289FC69.2020509@quad.com.ar>
Message-ID: <4289FF9C.3060106@teledisnet.be>

Alex Verstraeten a ?crit :

> StepH wrote:
>
>> 1./ Is each "display" must responsible to acquire/read the data ?
>> 2./ Or an engine collect the data then send them to each "display" ?
>>
>>  
>>
> I'd keep it simple:
>
> - DataCollector class
> asociated with one or more display instances (implemented as a list of 
> display subscribers)
> it collects data from a source and notifies each subscribed display 
> that new data is available.
> could something like a 'collect' method which performs:
>
> for display in self.subscribed_displays:
>   display.update( data )
>
>
> - Display class
> just a simple display class with an "update" method
> it should be able to receive new data
> and display new data
> (those 2 actions could be implemented in different methods, you might 
> not want to display everytime new data is available... maybe you might 
> want to consolidate data in some way and output it at some high interval)

Ok, it was my first idea too...

>
>> Also, how to "anim" this ?
>>
>> 1./ Via a timer ?
>> 2./ Via a simple loop (read/update display/pause/read user key)
>>  
>>
>
> a simple loop could do it
>  - handle user events
>  - collect data
>  - update displays
>  - sleep
>
>
>
Here i've a prob. (due to the fact that I start both with Python & 
TkInter).  In TkInter, you run your app by launching a mainloop() 
routine, right ?  So, how, in my forever loop (handle user events / 
Collect data / Update Display / Sleep) handle the user data ?

Sure, i can (i suppose), log user activity (via the event send by the Tk 
underlayer), the "poll" theses event in my for ever loop ?  But in this 
case, are these event will be correctly generated (by Tk) ?  How to 
"give the hand" to Tk in such scenario ?

Thanks for your help.

StepH.


From lee_cullens at mac.com  Tue May  3 22:26:16 2005
From: lee_cullens at mac.com (Lee Cullens)
Date: Tue, 3 May 2005 22:26:16 -0400
Subject: Regular Expression tools?
Message-ID: <49cf62ae6d27f49af10005c2a5683363@mac.com>

Been here before, but can't remember what I used and anyway that was a 
PC platform.

So, if you use a Regular Expression tool (PCRE standard) for Python 
programming and your development platform is Mac OS X, would you please 
help narrow down the search for me.  All I seem to be finding are other 
platforms and/or not standalone.

Thanks,
Lee C



From andymac at bullseye.apana.org.au  Wed May 25 06:34:15 2005
From: andymac at bullseye.apana.org.au (Andrew MacIntyre)
Date: Wed, 25 May 2005 21:34:15 +1100
Subject: Build error  Python 2.4.1 - stat problem?
In-Reply-To: <DE26E293539224499409D3E333E3367F0189F1EF@ABGEX02E.abg.fsc.net>
References: <DE26E293539224499409D3E333E3367F0189F1EF@ABGEX02E.abg.fsc.net>
Message-ID: <429454A7.6040105@bullseye.apana.org.au>

Brandt, Servatius wrote:

> The stat values do not make any sense.  It seems that the value used for
> the mode is really the numbers of links (I created the two empty
> /usr/local... directories to prevent the os.error exception):

That sort of suggests that the definition of the stat struct is not what
your build expects.

If you used the configure script to generate the makefile, you should
check whether any #define's modify the definition of this struct (usually
in /usr/include/sys/stat.h), assuming configure found your system's
stat.h, and see whether any such defines are set in your ./configure'd
pyconfig.h.

You may have to dig deeper still.

-------------------------------------------------------------------------
Andrew I MacIntyre                     "These thoughts are mine alone..."
E-mail: andymac at bullseye.apana.org.au  (pref) | Snail: PO Box 370
        andymac at pcug.org.au             (alt) |        Belconnen ACT 2616
Web:    http://www.andymac.org/               |        Australia


From bokr at oz.net  Sun May  8 13:11:46 2005
From: bokr at oz.net (Bengt Richter)
Date: Sun, 08 May 2005 17:11:46 GMT
Subject: Newbie : checking semantics
References: <1115503520.392357.230620@f14g2000cwb.googlegroups.com>
	<j44r71h56sdcjj07tj2g1i0kn332inq2q9@4ax.com>
	<1115546362.927282.151840@o13g2000cwo.googlegroups.com>
Message-ID: <427e391c.1004427951@news.oz.net>

On 8 May 2005 02:59:22 -0700, "LDD" <loicderoyand at yahoo.fr> wrote:

>Be reassured, I'm not working in any business related to pacemakers,
>avionics or railway signalling equipement   ...  :)
>
>I'm just a guy who is learning Python because to me it seems to be the
>best alternative to Perl, and trying to know what it is fit for.
>
I see you as being in a place where they give away all kinds
of musical instruments for free, and I hear you saying you
want to know what they are "fit" for ;-)

Regards,
Bengt Richter


From exarkun at divmod.com  Sun May  8 14:46:13 2005
From: exarkun at divmod.com (Jp Calderone)
Date: Sun, 08 May 2005 18:46:13 GMT
Subject: Database backend?
In-Reply-To: <427e55e3$0$79463$14726298@news.sunsite.dk>
Message-ID: <20050508184613.15422.1697243358.divmod.quotient.26389@ohm>

On Sun, 08 May 2005 20:09:29 +0200, Mikkel H??gh <mikkel at revelation.dk> wrote:
>I am in the progress of laying the groundwork for a small application I
>intend to make, and I'd like some expert advice, since this is the first
>larger project I've gotten myself into.
>
>First problem is which backend to use for data storage. The application I am
>trying to create is a small presentation-program with the sole purpose of
>displaying lyrics for songs at smaller concerts.
>The system is required to have a database of some kind for storing the
>lyrics, and this should most definitely be searchable.
>Naturally, I need a backend for this of some sort. I've been thinking of
>either XML, or full-blown MySQL.
>XML is very versatile, but I wonder if it is fast enough to handle lyrics
>for, say, 1000 songs - and then I would need to come up with some kind of
>indexing-algorithm. MySQL on the other hand, requires a lot of effort and
>adds to the complication of the installation.
>
>Honestly, I have a hard time making my mind up. Also, there might be other
>possibilities.
>
>Feedback will be appreciated.

  1000 songs is not very many.  I doubt any solution you come up with will suffer from performance problems.  Your best bet will probably be to use the simplest possible data structure, perhaps pickled on disk, perhaps just written to lightly structured text files, and don't worry about using a database for now.  If you find yourself needing to handle a couple orders of magnitude more songs, at that point you may wish to revisit your data storage solution.

  Jp



From kay.schluehr at gmx.net  Sun May 15 16:45:37 2005
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: 15 May 2005 13:45:37 -0700
Subject: Sober-Q
In-Reply-To: <7x3bso6y4c.fsf@ruckus.brouhaha.com>
References: <mailman.22.1116170676.15315.python-list@python.org>
	<hpfkl2-303.ln1@Bernd.Nawothnig.dialin.t-online.de>
	<7x3bso6y4c.fsf@ruckus.brouhaha.com>
Message-ID: <1116189937.795258.151560@g14g2000cwa.googlegroups.com>


Paul Rubin wrote:
> Bernd Nawothnig <Bernd.Nawothnig at t-online.de> writes:
> > On 2005-05-15, mal at lemburg.com [allegedly] wrote: ...
>
> I don't think that post was really from MAL.  It seems to be a
sporgery
> attack on the newsgroup.  Sigh.

The spam mails stem from a Sober variant, which sends Nazi propaganda
around. 

Kay



From anthra.norell at tiscalinet.ch  Mon May  9 11:21:38 2005
From: anthra.norell at tiscalinet.ch (Anthra Norell)
Date: Mon, 9 May 2005 17:21:38 +0200
Subject: Encryption with Python?
References: <1115324411.952821.150780@o13g2000cwo.googlegroups.com><001301c552db$dd19d3e0$0201a8c0@mcuf7>	<d5i0as$ejd$1@sea.gmane.org><009901c552fb$220132e0$0201a8c0@mcuf7>
	<d5ier2$hqa$1@sea.gmane.org>
Message-ID: <015601c554aa$cbb77aa0$0201a8c0@mcuf7>

Robert,
      Thanks a lot for your thorough explanations.

----- Original Message -----
From: "Robert Kern" <rkern at ucsd.edu>
To: <python-list at python.org>
Sent: Saturday, May 07, 2005 3:18 PM
Subject: Re: Encryption with Python?

( snip )

> >>You do realize that if I have two ciphertexts encrypted with the same
> >>key, I can subtract them? Then I have a sequence, that while not
> >>immediately readable, is just a straightforward combination of the two
> >>plaintexts without any encryption.
> >
> > How do you know the same key was used?
>
> I don't necessarily, but if the same key *is* used, I'll know. The
> differences of the ciphertexts will have distinctly non-random
> characteristics (well, assuming the plaintexts aren't one-time pads
> themselves).

The non-randomness of the difference is evidence of having guessed the key,
right? Why then do I need two samples? If I hack away at a single sample I
get a probably more conspicuous non-randomness twice as fast.

( snip )

> Additionally, one should not use the Mersenne Twister PRNG, which is
> what Python uses, as the PRNG for the stream cipher. Given a particular
> value or series of values, it is possible to determine one's position in
> the PRNG sequence and can, in essence derive the key. Some techniques
> can be used to hide actual current state of the PRNG like applying a
> cryptographic hash to the value from the PRNG. However, it's easier and
> far better to just use a cryptographically strong PRNG from the start.

I don't doubt that, given a series (long enough), the postion can be
derived. I doubt, though, that a series is knowable, if another, unknown,
series has been added to it.

> > If, however, it is meant to suggest
> > that it is the reversible, direct one-on-one relation between all the
> > characters of a plain text and its encryption that falls short of
> > state-of-the-art technology, I'd have no problem with that. That doesn't
> > mean, however, that an exercise is required to measure up to
> > state-of-the-art standards in order to be taken seriously. I do invent
my
> > own solutions for simple problems.
>
> This is not a simple problem.

I thought the problem was concealing passwords from ones kids or
collaborators.

>
> You haven't proved your claim that your cipher is "unbreakable." Your
> notion of "unbreakable" is also flawed; "indistinguishable from 'random'
> sequences" is only one part of cryptosystem security. For that matter,
> you haven't proven that the ciphertexts produced are "indistinguishable
> from random sequences." Note the plural. It's important.

I believe that a randomly distributed series utterly obliterates any
non-randomness or regularity of a second series, if the two are added. I
don't know how to produce a formal proof. It is just a hunch. It's actually
more than a hunch. It is a conviction. Not a certainty; a conviction. I'd be
delighted to be proved wrong (or right). The fact may be significant that we
module overflow back into the range.
      So, if the distribution of my code is indeed random, it will display
no clue about the key and can only be broken with a brute-force attack. This
imposes a second requirement, which is that a brute-force attack outtries
the patience of a teraflop machine. The function I posted, quite obviously,
does not satisfy this second requirement. The function can easily be applied
in a manner, though, that takes care of that.
      A third rquirement I cannot think of.

> You have a positive obligation to back your claim. I've pointed you to
> two obvious attacks that can be made against your system and also to
> resources that you can read to improve your knowledge of the issues. I
> *don't* have an obligation to spend more of my time meeting your
> arbitrary challenge. My reluctance to do so is not support for your claim.

I am not aiming at a Nobel prize and certainly don't presume to impose on
your priorities. So the term 'obligation' seems not very useful here.

>
> > I claim that my
> > solution satisfies the requirements of the task at hand and challenge
anyone
> > to prove the contrary. You can meet the challenge by deciphering the
> > following tiny message, knowing now the encryption method, which in
practice
> > would not be known
>
> Bull. And irrelevant.

Irrelevant okay, if the OP agrees.

( snip )

Best regards,

Frederic




From scottakirkwood at gmail.com  Tue May 24 10:40:42 2005
From: scottakirkwood at gmail.com (Scott Kirkwood)
Date: 24 May 2005 07:40:42 -0700
Subject: Just remember that Python is sexy
References: <1116899839.323185.58350@g49g2000cwa.googlegroups.com>
	<1116921936.323903.206580@g44g2000cwa.googlegroups.com>
Message-ID: <1116945642.419989.269240@g44g2000cwa.googlegroups.com>

Silly but true. It started with trying to figure how to remember it's
strip() and not trim(). 
Then it went downhill from there.



From s_david_rose at hotmail.com  Thu May 26 15:30:38 2005
From: s_david_rose at hotmail.com (GMane Python)
Date: Thu, 26 May 2005 15:30:38 -0400
Subject: "...Learning with Python" ...a property that addition
	andmultiplication have...
References: <1117067025.233387.323910@z14g2000cwz.googlegroups.com>
Message-ID: <d7581m$k2j$1@sea.gmane.org>

The inablility to work with negative values.

Addition can do the following:
5 + (-4)  read as 5 plus the value negative four.

Multiplication can do the following:
5 * (-1) read as 5 times the value negative one.

String concatination can not subtract the sub-string 'lo' from 'hello'.
'hello' - 'lo' is invalid.

string repetition can not repeat a value negative times:
'hello' * -3 is invalid.
'hello' * 2.75 is also invalid, in that you can not repeat a fractional
amount.

-Dave
(Python Newbie)
<jeffbernstein at yahoo.com> wrote in message
news:1117067025.233387.323910 at z14g2000cwz.googlegroups.com...
> Greetings.
>
> I'm reading "How to think like a computer scientist: Learning with
> Python" and there's a question regarding string operations. The
> question is, "Can you think of a property that addition and
> multiplication have that string concatenation and repetition do not?"
>
> I thought it was the commutative property but "<string>"*3 is
> equivalent to 3*"<string>". Any ideas?
>
> Thanks,
>
> Jeff
>
> -- 
> http://mail.python.org/mailman/listinfo/python-list
>





From ajikoe at gmail.com  Sun May 22 07:16:50 2005
From: ajikoe at gmail.com (ajikoe at gmail.com)
Date: 22 May 2005 04:16:50 -0700
Subject: install python 2.4.1
In-Reply-To: <d6pot2$2rd$1@news5.zwoll1.ov.home.nl>
References: <1116758705.327764.33740@g14g2000cwa.googlegroups.com>
	<d6pot2$2rd$1@news5.zwoll1.ov.home.nl>
Message-ID: <1116760610.227839.83110@o13g2000cwo.googlegroups.com>

I use win xp pro.
I wonder about this new version of python because I use Nummeric, pyro,
 combine with komodo and pydev ide in my python 2.4.
If there is compatibility isue with the new version, it is better for
me not to install the new version.

Sincerely Yours,
pujo



From terjeja at gmail.com  Mon May  2 16:21:06 2005
From: terjeja at gmail.com (terjeja at gmail.com)
Date: 2 May 2005 13:21:06 -0700
Subject: Mouseclick
In-Reply-To: <mailman.41.1115059746.6583.python-list@python.org>
References: <1e140f34.0505021030.9f615dc@posting.google.com>
	<mailman.41.1115059746.6583.python-list@python.org>
Message-ID: <1115065266.636789.8070@l41g2000cwc.googlegroups.com>


Benji York wrote:
> Terje Johan Abrahamsen wrote:
> > I have been trying desperately for a while to make Python push the
> > left mousebutton.
>
> Here's some code I've used to simulate a *right* click, but it should

> be obvious how to make it do what you want:
>
> void sendRightClick(void)
> {
>      PostMessage(GetForegroundWindow(), WM_RBUTTONDOWN, MK_RBUTTON,
0);
>      PostMessage(GetForegroundWindow(), WM_RBUTTONUP, 0, 0);
> }

Thanks for the input. I have 'Pythonized' the code a little:

>>> def click():
... 	windll.user32.SetCursorPos(100, 100)
... 	win32gui.PostMessage(win32gui.GetActiveWindow(),
win32con.WM_LBUTTONDOWN, win32con.MK_LBUTTON, 0)
... 	win32gui.PostMessage(win32gui.GetActiveWindow(),
win32con.WM_LBUTTONUP, 0, 0)

and when I try it like this:

n = click()

Sure, the cursor moves, but it does not click. What am I doing wrong?

Thanks in advance



From onurb at xiludom.gro  Thu May 26 11:51:28 2005
From: onurb at xiludom.gro (bruno modulix)
Date: Thu, 26 May 2005 17:51:28 +0200
Subject: __init__() not called automatically
In-Reply-To: <mailman.121.1117083356.18027.python-list@python.org>
References: <1117081917.760603.82610@z14g2000cwz.googlegroups.com>
	<mailman.121.1117083356.18027.python-list@python.org>
Message-ID: <4295f081$0$19214$626a14ce@news.free.fr>

Paul McNett wrote:
> Sriek wrote:
> 
(snip)
>> Similarly, why do we have to explicitly use the 'self' keyword
>> everytime?
> 
> 
> This is closer to a wart, IMO, 

I've always explicitelly used the (implied) 'this' pseudo-pointer in
Java, C++ etc. The wart is in all those languages that don't makes it
mandatory IMHO !-)

-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From merman at o2online.de  Sat May 28 10:25:30 2005
From: merman at o2online.de (TK)
Date: Sat, 28 May 2005 16:25:30 +0200
Subject: __call__
Message-ID: <42987f9a$0$26432$9b622d9e@news.freenet.de>

Hi,

how can handle __call__? Can you give a sample?

Thanks

o-o

Thomas


From p at ulmcnett.com  Tue May 10 22:27:00 2005
From: p at ulmcnett.com (Paul McNett)
Date: Tue, 10 May 2005 19:27:00 -0700
Subject: Solipsis: Python-powered Metaverse
In-Reply-To: <4280F03E.2070903@kzoo.edu>
References: <d5qqo7$3dc$1@sea.gmane.org> <4280F03E.2070903@kzoo.edu>
Message-ID: <42816D74.8050103@ulmcnett.com>

Joseph Garvin wrote:
> I was looking at this earlier today because I was curious how they were
> going to handle performance concerns (both due to Python and bandwidth).
> I'm having trouble understanding all of the details -- what is the
> significance of the use of a torus for the world space? Does this
> somehow help in the computation of the convex hull?

I'm having trouble understanding how they are going to make this work
server-less, pure peer-to-peer. I just tried it out and it was cool: I
could move around in the world, get near other avatars and say "hey".
Only, I couldn't hear what they said back to me because I don't have UDP
port 6000 open on my firewall and forwarding to my laptop (and don't
want to do that either).

It is a shame: peer to peer has the potential to enable really cool,
imaginative multiuser worlds, but how many people are connecting
directly to the internet these days?

-- 
pkm ~ http://paulmcnett.com




From lee at example.com  Tue May  3 18:21:03 2005
From: lee at example.com (Lee Harr)
Date: Tue, 03 May 2005 22:21:03 GMT
Subject: Form and Database
References: <ogQde.78771$IN.1346884@twister2.libero.it>
Message-ID: <jPSde.405$6C4.161@news02.roc.ny>

On 2005-05-03, v <vito_sc at hotmail.com> wrote:
> Please help..... I'm new with Python.
> Using Boa (or Pythoncard) and pysqlite, how can I read/write from/to
> database, thanks
>
>


Have you tried the pysqlite basic intro?
http://initd.org/tracker/pysqlite/wiki/basicintro

Doesn't mention boa or pythoncard, but one step at a time...

First get some data from the datbase, then see if you
can put it in your form.



From jepler at unpythonic.net  Sun May 15 17:23:16 2005
From: jepler at unpythonic.net (Jeff Epler)
Date: Sun, 15 May 2005 16:23:16 -0500
Subject: Precision?
In-Reply-To: <1116165159.269252.117830@g14g2000cwa.googlegroups.com>
References: <1116165159.269252.117830@g14g2000cwa.googlegroups.com>
Message-ID: <20050515212300.GA3445@unpythonic.net>

If you want to do decimal arithmetic, use the decimal module which is
new in Python 2.4.

Python 2.4 (#1, Jan 22 2005, 20:45:18) 
[GCC 3.3.3 20040412 (Red Hat Linux 3.3.3-7)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> from decimal import Decimal as D
>>> D("1.0") + D("3.0") + D("4.6")
Decimal("8.6")
>>> 

when you write '4.6', you get a binary floating-point number which is
not equal to the decimal number 4.6.
>>> 4.6
4.5999999999999996
>>> 4.6 == D("4.6")
False

Jeff
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From lbates at syscononline.com  Mon May  9 15:43:44 2005
From: lbates at syscononline.com (Larry Bates)
Date: Mon, 09 May 2005 14:43:44 -0500
Subject: Resize an Image without PIL
In-Reply-To: <1115657494.333985.278010@f14g2000cwb.googlegroups.com>
References: <1115657494.333985.278010@f14g2000cwb.googlegroups.com>
Message-ID: <427FBD70.2080500@syscononline.com>

PIL is the best way.  Or you can call some external program to
do it (using os.system).

Larry Bates


querypk at gmail.com wrote:
> Hi I would like to know how to resize an Image without using python
> Imaging library.
> 


From timothy at open-networks.net  Mon May 16 20:16:12 2005
From: timothy at open-networks.net (Timothy Smith)
Date: Tue, 17 May 2005 10:16:12 +1000
Subject: query progress bar
In-Reply-To: <1116286913.207477.219180@g44g2000cwa.googlegroups.com>
References: <mailman.65.1116284481.8733.python-list@python.org>
	<1116286913.207477.219180@g44g2000cwa.googlegroups.com>
Message-ID: <428937CC.3020508@open-networks.net>

ryan at ryankaskel.com wrote:

>What type of UI is this for? The Python Cookbook, 2nd Ed. has a nice
>textual solution. I'm not sure if this is the same one, but here is <a
>href="http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/168639">one
>from ASPN</a>. Here is one <a
>href="http://wxpython.org/docs/api/wx.ProgressDialog-class.html"> for
>wxPython.</a>
>
>  
>
it's for wx, the problem isn't making the progress bar itself, it's 
knowing how long the query is going to run for.
i'm using pypgsql


From martin at v.loewis.de  Sun May  8 13:49:42 2005
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Sun, 08 May 2005 19:49:42 +0200
Subject: Trouble saving unicode text to file
In-Reply-To: <t4qr71h88us709h4es4oa4fbamnkgkj0sj@4ax.com>
References: <1115500976.571232.76100@z14g2000cwz.googlegroups.com>
	<427DDAA5.9020606@v.loewis.de>
	<t4qr71h88us709h4es4oa4fbamnkgkj0sj@4ax.com>
Message-ID: <427E5136.4000300@v.loewis.de>

John Machin wrote:
> Martin, I can't guess the reason for this last suggestion; why should
> a Windows system use iso-8859-1 instead of cp1252?

Windows users often think that windows-1252 is the same thing as
iso-8859-1, and then exchange data in windows-1252, but declare them
as iso-8859-1 (in particular, this is common for HTML files).
iso-8859-1 is more portable than windows-1252, so it should be
preferred when the data need to be exchanged across systems.

Regards,
Martin


From fredrik at pythonware.com  Fri May 13 09:42:51 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Fri, 13 May 2005 15:42:51 +0200
Subject: String formatting strangeness
References: <1115990147.880532.61730@o13g2000cwo.googlegroups.com>
Message-ID: <d62ae3$irb$1@sea.gmane.org>

dark.ryder at gmail.com wrote:

> <type 'int'> <type 'str'> <type 'int'> <type 'int'>
> Traceback (most recent call last):
>   File "X:\Music (FLAC)\Post-process new rips.py", line 50, in ?
>     print "\t\t\t<section number=\"%i\" title=\"%s\"
> length=\"%i:%i\"/>\n" % [number, name, seconds // 60, seconds % 60]
> TypeError: int argument required
>
> Wait, what?  The first line clearly identifies that the the first,
> third, and fourth elements are all integers, yet the error says that
> *lack* of integers is the problem.  If I change all "%i"s to "%d", I
> get the same problem, and changing to "%s" (hey, it was worth a shot)
> gives "TypeError: not enough arguments for format string" instead.
> Huh?  I see four placeholders and a four-element tuple.

[number, name, seconds // 60, seconds % 60] is not a tuple.

(number, name, seconds // 60, seconds % 60) is a tuple.

</F>





From jacob at cd.chalmers.se  Wed May 11 17:22:12 2005
From: jacob at cd.chalmers.se (Jacob Hallen)
Date: 11 May 2005 21:22:12 GMT
Subject: Europython update
Message-ID: <mailman.456.1115903680.29826.python-announce-list@python.org>


This is a news update about the Europython 2005 conference, to be held
in G?teborg, Sweden 27-29 June

- We have received a very nice array of talks this year, and we expect
  to be the biggest Python conference ever in terms of subjects
  covered. Many thanks to all the speakers who are putting their
  efforts into this.

- A list of talks is now available,either through the "Track Overview"
  menu item on the Europython website, or directly at
  http://www.python-in-business.org/ep2005/atracks.chtml

- Around the end of May we will be soliciting input from all attendees
  on what talks they aremost interested in. This information will be
  used in scheduling, in order to reduce the amounts of collisions
  between popular talks and in order to reduce the risk of overcrowding
  a small room with a talk that turns out to be very popular.
	   
- Early bird registrations end 15 May. Registration for the low cost
  accomodation close to the conference venue ends on the same day.
  We may have further accomodation available at a later date, but we
  can't make any promises.

- Please help us become the biggest Python/Zope conference. Talk to
  your friends about Europython and write about the conference in your
  blog. The more people who show up, the more we can spend on getting
  the best and most interesting talks.

- This year we have a special focus on Python newbies in the Tutorials
  track. If you have staff or customers who need a well rounded introduction
  to Python, send them to Europython 2005.

For all conference details, go to:
http://www.europython.org

See you in G?teborg.

EuroPython Team.

About EuroPython: Europython is an annual conference for the Python
and Zope communities. It circulates between different sites in
Europe. Having started in Charleroi, Belgium, it is now in G?teborg,
Sweden and will move to CERN in Swizerland next year. Europython is a
community conference run by volunteers.


-- 


From sjmaster at gmail.com  Tue May 17 15:34:30 2005
From: sjmaster at gmail.com (Steve M)
Date: 17 May 2005 12:34:30 -0700
Subject: processing a Very Large file
References: <118k530sl6kve5c@corp.supernews.com>
	<mailman.110.1116348001.8733.python-list@python.org>
Message-ID: <1116358470.557270.285200@g44g2000cwa.googlegroups.com>

I'm surprised you didn't recommend to use ZODB. Seems like an ideal way
to manage this large amount of data as a collection of Python objects...



From peter at engcorp.com  Fri May 20 16:10:33 2005
From: peter at engcorp.com (Peter Hansen)
Date: Fri, 20 May 2005 16:10:33 -0400
Subject: buffer_info error
In-Reply-To: <1116619271.294467.51400@g44g2000cwa.googlegroups.com>
References: <1116619271.294467.51400@g44g2000cwa.googlegroups.com>
Message-ID: <mdCdnYy2x9ym2RPfRVn-tQ@powergate.ca>

ashtonn at gmail.com wrote:
> data = array('B', '\0' * 256)
> data1 = ''.join([dest, src]
> 
> print data.buffer_info()[0]... works
> print data1.buffer_info()[0]....error
> 
> This output is a string and hence i believe i get the above error. Any
> ideas?

Yes, you are entirely correct.  (Integers don't have "buffer_info" 
attributes either, and for that matter strings don't have an attribute 
called "fribble_frabble", in case you were thinking of trying that. ;-)

(That's a facetious reply, yes, because you gave no indication what you 
were trying to accomplish.  It's really hard to tell what you expected 
versus what you got, and why you got that is completely obvious to all 
of us, who can't read your mind.)

-Peter


From p at ulmcnett.com  Thu May 26 17:40:25 2005
From: p at ulmcnett.com (Paul McNett)
Date: Thu, 26 May 2005 14:40:25 -0700
Subject: Case Sensitive, Multiline Comments
In-Reply-To: <8664x5y92g.fsf@guru.mired.org>
References: <1117137316.140791.210430@g14g2000cwa.googlegroups.com>
	<8664x5y92g.fsf@guru.mired.org>
Message-ID: <42964249.3000708@ulmcnett.com>

Mike Meyer wrote:
> "Elliot Temple" <curi42 at gmail.com> writes:
>> Also, why aren't there
>>multiline comments?  Would adding them cause a problem of some sort?
> 
> Because no one every really asked for them. After all, there are two
> formats for multi-line strings, which the interpreter will build and
> then discard. There are tools that recognize multi-line strings after
> function/method definitions and treat them as function documentation.
> 
> Adding multiline comments probably wouldn't be a problem - you'd just
> have to come up with an introductory character sequence that can't
> occur in the language (not that that stopped C). But you'd have to get
> someone to write the code, then someone with commit privs to decide it
> was useful enough to commit. That seems to be a lot of work for very
> little gain.

Don't we already have multi-line comments in the form of string literals?

-- 
Paul McNett
http://paulmcnett.com



From rmm at iname.com  Wed May 11 11:54:54 2005
From: rmm at iname.com (rmm at iname.com)
Date: 11 May 2005 08:54:54 -0700
Subject: Replacing open builtin
In-Reply-To: <_9qdnT1T7fmRjx_fRVn-1Q@powergate.ca>
References: <1115816164.517116.124070@g14g2000cwa.googlegroups.com>
	<mailman.351.1115817322.29826.python-list@python.org>
	<1115819159.865288.238650@g49g2000cwa.googlegroups.com>
	<_9qdnT1T7fmRjx_fRVn-1Q@powergate.ca>
Message-ID: <1115826894.319261.198160@z14g2000cwz.googlegroups.com>

Sorry, didn't mean to pester Jp

I have checked the archives, Rexec copies __builtins__, causing the del
__builtins__ issue.  I'm modifying the lowest level__builtins__.
I am also using __getAttribute__ and __setAttr__, I could find no
mention of security holes on the lists.

Let me re-state the question:
1. Once I've set all builtins except Import to None.  Is there any way
of re-binding these built-ins if import is restricted to a single
module?
2. Are classed protected using __getAttribute__ and __setAttr__ secure

If these questions have been asked already, could you point me to
where?

-Ronnie



From gabriel.barros at gmail.com  Sun May  1 17:24:21 2005
From: gabriel.barros at gmail.com (Gabriel B.)
Date: Sun, 1 May 2005 18:24:21 -0300
Subject: scope acting weird
Message-ID: <5175a81c05050114243e77d172@mail.gmail.com>

i have the following code:

Ui.py:
import Tkinter as Tk
import UiMainScreen

UiMainScreen.py:
class UiMainScreen( Tk.Frame ):
    ....

and i get the following error:
  File "UiMainScreen.py", line 1, in ?
    class UiMainScreen(Tk.Frame):
NameError: name 'Tk' is not defined

isn't Tk supposed to be imported globaly?
And If i import Tkinter again inside every other file, will it be
really imported several times and be independent in each file or the
python interpreter just use the subsequent imports to know where to
propagate stuff?

Thanks,
Gabriel


From bill.mill at gmail.com  Thu May 19 16:02:38 2005
From: bill.mill at gmail.com (Bill Mill)
Date: Thu, 19 May 2005 16:02:38 -0400
Subject: Convert from numbers to letters
In-Reply-To: <d6iqe5$rgt$01$1@news.t-online.com>
References: <1116511005.900715.107260@o13g2000cwo.googlegroups.com>
	<mailman.209.1116513780.8733.python-list@python.org>
	<1116528750.285895.27720@f14g2000cwb.googlegroups.com>
	<mailman.223.1116529228.8733.python-list@python.org>
	<1116530403.328825.216120@z14g2000cwz.googlegroups.com>
	<mailman.225.1116531601.8733.python-list@python.org>
	<d6iqe5$rgt$01$1@news.t-online.com>
Message-ID: <797fe3d405051913022e35c7c6@mail.gmail.com>

On 5/19/05, Peter Otten <__peter__ at web.de> wrote:
> Bill Mill wrote:
> 
> >> Traceback (most recent call last):
> >>File"<stdin>",line1,in?
> >> NameError: name 'sorted' is not defined
> >>
> >> I think you're probably using 2.4 ??
> >
> > Yes, sorted() is new in python 2.4 .You could use a very lightly
> > tested pure-python partial replacement:
> 
> By the way, sorted() can be removed from your original post.
> 
> Code has no effect :-)

I'm gonna go ahead and disagree with you:

>>> sorted([''.join((x, y)) for x in alpha \
...    for y in [''] + [z for z in alpha]], key=len) == \
... [''.join((x,y)) for x in alpha for y in [''] + [z for z in alpha]]
False

If you want to see why, here's a small example:

>>> alpha = 'abc'
>>> [''.join((x,y)) for x in alpha for y in [''] + [z for z in alpha]]
['a', 'aa', 'ab', 'ac', 'b', 'ba', 'bb', 'bc', 'c', 'ca', 'cb', 'cc']

>>> sorted([''.join((x,y)) for x in alpha for y in [''] + [z for z in alpha]],
key=len)
['a', 'b', 'c', 'aa', 'ab', 'ac', 'ba', 'bb', 'bc', 'ca', 'cb', 'cc']

Peace
Bill Mill
bill.mill at gmail.com


From steve at holdenweb.com  Sun May 22 16:12:06 2005
From: steve at holdenweb.com (Steve Holden)
Date: Sun, 22 May 2005 16:12:06 -0400
Subject: passing arguments
In-Reply-To: <mIOdnbfCkYmuDBPfRVn-vA@comcast.com>
References: <200505201826.09939.jeffelkins@earthlink.net>	<mailman.266.1116629225.8733.python-list@python.org>
	<mIOdnbfCkYmuDBPfRVn-vA@comcast.com>
Message-ID: <d6qovq$7ft$1@sea.gmane.org>

Steven Bethard wrote:
> James Stroud wrote:
> 
>>import sys
>>
>>try:
>>  arg1 = sys.argv[1]
>>except IndexError:
>>  print "This script takes an argument, you boob!"
>>  sys.exit(1)
> 
> 
> Also possible, to guarantee that exactly one argument was given:
> 
> try:
>    arg1, = sys.argv
> except ValueError:
>    print "This script takes an argument, you boob!"
>    sys.exit(1)
> 
Aren't we forgetting argv[0] here, or am I overlooking something (like, 
you chopped it off without telling me?)?

Surely this would give an unpacking error if command-line arguments 
*were* present.

> If you want to get, say, 3 arguments, just change that line to:
> 
>    arg1, arg2, arg3 = sys.argv
> 
Similarly. Or are you just calling sys.argv[0] arg1 to confuse me? ;-)
> 
>>OR, way better: See the optparse module.
> 
> 
> Definitely.  Though depending on what kind of arguments your script 
> takes, you still may need to deal with the args that optparse returns.
> 
Anyway it's always good to know about the underlying mechanisms.

regards
  Steve
-- 
Steve Holden        +1 703 861 4237  +1 800 494 3119
Holden Web LLC             http://www.holdenweb.com/
Python Web Programming  http://pydish.holdenweb.com/



From mwm at mired.org  Fri May  6 10:15:24 2005
From: mwm at mired.org (Mike Meyer)
Date: Fri, 06 May 2005 09:15:24 -0500
Subject: hard memory limits
References: <d5f9jl$k6d$1@domitilla.aioe.org>
	<mailman.88.1115374567.29826.python-list@python.org>
Message-ID: <86vf5w5tkz.fsf@guru.mired.org>

"Fredrik Lundh" <fredrik at pythonware.com> writes:

> Maurice LING wrote:
>> Will adding more RAM helps in this case?
>
> probably.  more swap space might also help.  or you could use a
> smarter malloc package.  posting more details on your platform,
> toolchain, python version, and list building approach might also
> help.

Without platform information, it's hard to say. On a modern Unix
system, you only run into system resource limits when the system is
heavily loaded. Otherwise, you're going to hit per-process limits. In
the latter case, adding RAM or swap won't help at all. Raising the
per-process limits is the solution.

            <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From fredrik at pythonware.com  Thu May 12 14:22:24 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 12 May 2005 20:22:24 +0200
Subject: Python Polymorphism
References: <20050512174414.39238.qmail@web52604.mail.yahoo.com>
Message-ID: <d606ee$dl0$1@sea.gmane.org>

Carlos Moreira wrote:

> Are you talking about:
> http://docs.python.org/tut/tut.html
>
> I fear that doesn't exist one word about polymorphism
> (in an explicit way).

so phrases like

    "Strings can be concatenated (glued together) with the + operator,
    and repeated with *"

    "Like string indices, list indices start at 0, and lists can be sliced,
    concatenated and so on"

    "The built-in function len() also applies to lists"

    "Python's for statement iterates over the items of any sequence"

    "The statement result.append(b) calls a method of the list object
    result. A method is a function that 'belongs' to an object and is
    named obj.methodname, where obj is some object (this may be an
    expression), and methodname is the name of a method that is
    defined by the object's type. Different types define different
    methods. Methods of different types may have the same name
    without causing ambiguity."

    (etc)

doesn't tell you that polymorphism is a fundamental part of the language,
and used all over the place.  or did you have a non-OO meaning of the
word in mind?

</F>





From johnfabel at btinternet.com  Fri May 20 17:24:14 2005
From: johnfabel at btinternet.com (John Abel)
Date: Fri, 20 May 2005 22:24:14 +0100
Subject: Process monitoring
In-Reply-To: <1116543944.348711.11910@g43g2000cwa.googlegroups.com>
References: <1116543944.348711.11910@g43g2000cwa.googlegroups.com>
Message-ID: <428E557E.9040204@btinternet.com>

gsteff wrote:

>Hey, I'm working on a Python program that will launch some other
>non-Python process using os.spawn (in the os.P_NOWAIT mode) and then
>basically wait for it to finish (while doing some other stuff in the
>interim).  Normally, the new process will signal that it's done by
>writing to a file, but I'd like to also find out if the new process
>died unexpectedly.  Anyone know any preferrable ways to do this?
>
>Greg Steffensen
>
>  
>
If you're using 2.4, have a look at the subprocess module.

J


From http  Tue May 24 21:20:59 2005
From: http (Paul Rubin)
Date: 24 May 2005 18:20:59 -0700
Subject: What are OOP's Jargons and Complexities?
References: <1116843761.619249.144790@g47g2000cwa.googlegroups.com>
	<bAske.14563$yx.14338@fe08.lga> <3584469.Aerji1NdQr@yahoo.com>
	<3cWdnbtAM6aZ6g_fRVn-2w@rcn.net>
	<878y24yhst.fsf@ivanova.rotty.yi.org>
	<3fh93fF7set5U1@news.dfncis.de> <9tKdnT-wKq24Uw7fRVn-pA@rcn.net>
Message-ID: <7xu0ksqex0.fsf@ruckus.brouhaha.com>

Wibble <Wibble at Mailinator.com> writes:
> Andreas, your link indicates that lisp is a Weakly typed language not
> strong.  Theres no compile time type semantics, at least in CommonLisp,
> MacLisp, ZetaLisp or FranzLisp.

There are runtime semantics that enforce types.

>  From your link:
>    When the types detected or declared are strictly enforced by the
>    language's semantics, the language is strongly-typed.
>    when the semantics of the language allows for inconsistencies between
>    the compile-time type and the run-time type, the language is
>    weakly-typed.

Yes, the compile-time type of 3 is integer, and the runtime type of 3
is also integer.  There is no inconsistency.  Compare that with C,
which lets you cast 3 to a pointer.


From mwm at mired.org  Thu May 12 03:44:19 2005
From: mwm at mired.org (Mike Meyer)
Date: Thu, 12 May 2005 02:44:19 -0500
Subject: reg mail sending without smtp module
References: <mailman.429.1115873514.29826.python-list@python.org>
Message-ID: <86u0l8khws.fsf@guru.mired.org>

praba kar <prabapython at yahoo.co.in> writes:
> In Php we can build a Mail Message by
> Mail_mime class and send this message by
> Mail::Factory's class send Method. Here Php
> doesn't use any smtp modules. Like that
> In Python I used email.Message class to
> build Mail Message and Now I am searching
> modules to send this message as mail.

Python isn't PHP. In python, the standard way to send a message is
with the smtp module. If you do an "import this" in a python
interpreter, it will tell you (among other things) "There should be
one-- and preferably only one --obvious way to do it." The smtp module
is that way. Since smtp is also how mail is sent around the internet,
this makes a lot of sense.

Now, the PHP mail command uses the system's sendmail binary (at least
on Unix). You can do that by hand using the subprocess module in 2.4,
or os.system or os.popen or something similar on earlier versions of
Python. All this really does is asks sendmail to put a message in the
queue from the command line, rather than via the smtp port. It's
probably slower than talking to the already running smtp daemon.

On Windows, the PHP mail command connects to an smtp server - which is
exactly what smtplib does.

        <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From skip at pobox.com  Sat May 14 14:51:51 2005
From: skip at pobox.com (Skip Montanaro)
Date: Sat, 14 May 2005 13:51:51 -0500
Subject: sockets don't play nice with new style classes :(
In-Reply-To: <7xvf5mnovo.fsf@ruckus.brouhaha.com>
References: <7xvf5mnovo.fsf@ruckus.brouhaha.com>
Message-ID: <17030.18631.595507.266221@montanaro.dyndns.org>


    Paul> It seems to me that the socket module itself should be rewritten
    Paul> to use new style classes, so that socket.socket objects can extend
    Paul> _socket.socket instead of wrapping them.

    Paul> Am I missing something?

Probably not.  The socket module could use some attention.

Skip


From cotyspend at yahoo.com  Sun May 29 11:21:26 2005
From: cotyspend at yahoo.com (nephish)
Date: 29 May 2005 08:21:26 -0700
Subject: How do i read just the last line of a text file?
In-Reply-To: <x8ydncqu_IQ-TQTfRVn-jg@comcast.com>
References: <1117341766.166081.132240@o13g2000cwo.googlegroups.com>
	<9v0om2-5fl.ln1@rogers.com> <429959E6.9040208@lexicon.net>
	<998om2-5fl.ln1@rogers.com> <x8ydncqu_IQ-TQTfRVn-jg@comcast.com>
Message-ID: <1117380086.535039.123360@g49g2000cwa.googlegroups.com>

cool. thanks for the help guys !



From newsgroups at jhrothjr.com  Thu May 26 08:43:09 2005
From: newsgroups at jhrothjr.com (John Roth)
Date: Thu, 26 May 2005 06:43:09 -0600
Subject: __init__() not called automatically
References: <1117081917.760603.82610@z14g2000cwz.googlegroups.com>
Message-ID: <119bh2ud5fjj66c@news.supernews.com>


"Sriek" <scharan20 at gmail.com> wrote in message 
news:1117081917.760603.82610 at z14g2000cwz.googlegroups.com...
> hi,
> i come from a c++ background. i ws happy to find myself on quite
> familiar grounds with Python. But, what surprised me was the fact that
> the __init__(), which is said to be the equivlent of the constructor in
> c++, is not automatically called. I'm sure there must be ample reason
> for this. I would like to know why this is so? This is my view is more
> burden on the programmer.

It depends on what you mean by a burden. If the init methods of
each subclass was always called, then you'd have to work out how
to make them cooperate in all cases. The way C++ works, it has to
call the constructors because the vtable has explicit sections for each
of the base classes, recursively to the (possibly multiple) bases of
the tree. In Python, that isn't true - you get one instance regardless
of the number of base classes or structure of the tree, and that
single instance contains all the identifiers needed. It's up to the
class you instantiate to decide how to build the instance.

> Similarly, why do we have to explicitly use the 'self' keyword
> everytime?

Python has no way of knowing, at compile time, whether an
identifier is an instance/class variable or a module/builtin.
Putting the instance among the parameters lets you treat it as
a local variable which the compiler is quite capable of handling.

Remember that you're dealing with a highly dynamic environment;
inspection of the single source module will not tell you enough to
make this distinction.

John Roth
>
> Every kind of help would be welcome.
> 



From fredrik at pythonware.com  Mon May 30 06:00:20 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Mon, 30 May 2005 12:00:20 +0200
Subject: Tkinter slowes down
References: <d79a1v$15j4$1@ns.felk.cvut.cz><mailman.212.1117287190.18027.python-list@python.org><d7a5pr$1lc0$1@ns.felk.cvut.cz>
	<opsrkxb1idrqur0o@eb.pragmadev>
Message-ID: <d7eo2q$rnl$1@sea.gmane.org>

Eric Brunel wrote:

>> In the meantime I found that widget.destroy() works well, too (before
>> "repainting").
>
> This was the only solution I found using "regular" Tkinter widgets when
> there are bindings on canvas items. I tried to find another solution by
> modifying Tkinter.py, but the problem is much harder than it seems,
> since many things happen at tcl level.

for pure Tkinter, I recommend using bind classes to implement "controllers"
on the canvas level, using appropriate find functions to locate the individual
items, and dispatching via "trackers".  see

    http://online.effbot.org/2004_09_01_archive.htm#wck-track

for some background (I guess it's time to write that "later article" I mention
in that article.  if you cannot wait, feel free to steal the controller code from
the WCK).

</F> 





From __peter__ at web.de  Sun May  1 03:10:12 2005
From: __peter__ at web.de (Peter Otten)
Date: Sun, 01 May 2005 09:10:12 +0200
Subject: Trying to write CGI script with python...
References: <mailman.9.1114734748.14961.python-list@python.org>
	<1114803082.851505.149730@o13g2000cwo.googlegroups.com>
	<1114806476.477679.150290@f14g2000cwb.googlegroups.com>
Message-ID: <d51vbj$qdp$05$1@news.t-online.com>

M.E.Farmer wrote:

> I found an excellent example that was posted by the F-bot.
> Fredrik Lundh????????????May?26?2000

Python has since grown the cgitb module. Putting

import cgitb; cgitb.enable()

at the top of your cgi script may be even more convenient than using the
Lundhian wrapper.

Peter


From gandalf at geochemsource.com  Wed May 18 12:21:41 2005
From: gandalf at geochemsource.com (Laszlo Zsolt Nagy)
Date: Wed, 18 May 2005 18:21:41 +0200
Subject: super() and automatic method combination
In-Reply-To: <Xns965A9F2ACC710duncanbooth@127.0.0.1>
References: <7xvf5gra9z.fsf_-_@ruckus.brouhaha.com>	<Xns965A94007A1BBduncanbooth@127.0.0.1>	<mailman.147.1116424769.8733.python-list@python.org>
	<Xns965A9F2ACC710duncanbooth@127.0.0.1>
Message-ID: <428B6B95.6030501@geochemsource.com>


>Which is fine so long as nobody else tries to add further subclasses later:
>
>class C(B): ...
>class Mine(AB,C): ...
>
>Mine().f()
>
>Using super throughout this works (it calls f in Mine, AB, A, C, B, and 
>then Base), but your explicit call to the base classes means that if you 
>don't call C.f() explicitly from Mine it never gets called, and if you do 
>call it explicitly from Mine it gets called *after* B.f() has been called 
>(and B.f() probably ends up being called twice).
>  
>
Okay, I understand now. It was a good learning session for me. :-)
At this moment I do not see a problem where I would need a diamond 
shaped inheritance graph but
I'll keep in mind the difference between super and direct calls. :-)

I tested this and I realized that if you change the parameter list in 
the descendants then it is not wise to use super.
I'm going to publish the example below, I hope others can learn from it too.

Example (good):

class A(object):
    def f(self):
        print "A.f called"
       
class B(A):       
    def f(self):
        super(B,self).f()
        print "B.f called"
       
class C(A):       
    def f(self):
        super(C,self).f()
        print "C.f called"       
       
class D(B,C):       
    def f(self):
        super(D,self).f()
        print "D.f called"               
       
       
d = D()
d.f()

Results in:

A.f called
C.f called
B.f called
D.f called

Example (bad):

class B(A):       
    def f(self,what):
        super(B,self).f()
        print "B.f called (%s)" % what

Will result in:

C:/Python24/pythonw.exe -u  "C:/Python/Projects/Test4/test4.py"
Traceback (most recent call last):
  File "C:/Python/Projects/Test4/test4.py", line 22, in ?
    d.f()
  File "C:/Python/Projects/Test4/test4.py", line 17, in f
    super(D,self).f()
TypeError: f() takes exactly 2 arguments (1 given)

Of course you cannot tell if super(C,self).f() will call A.f or not 
(when add another
subclass under class A, it will change the MRO...)

If you do not want to add any other subclasses then probably you can use

super(C,self).f('foo')

but in that case it is equivalent to

A.f(self,'foo')

Best,

   Laci 2.0



-- 
_________________________________________________________________
  Laszlo Nagy		      web: http://designasign.biz
  IT Consultant		      mail: gandalf at geochemsource.com

     		Python forever!




From bdesth.quelquechose at free.quelquepart.fr  Mon May 23 16:11:27 2005
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Mon, 23 May 2005 22:11:27 +0200
Subject: what is addMethod ?
In-Reply-To: <1116844449.826578.245720@g49g2000cwa.googlegroups.com>
References: <1116841257.937815.61910@g43g2000cwa.googlegroups.com>
	<tYhke.8301$5I5.708829@newshog.newsread.com>
	<1116844449.826578.245720@g49g2000cwa.googlegroups.com>
Message-ID: <429233cf$0$6497$636a15ce@news.free.fr>

qwejohn at hotmail.com a ?crit :
> Thnks,
> I wrongly took it for a standard method;
> I found where it is defined (it's part of the project); 

Then it would be nice to fully answer your question, so everyone may 
know what's this method and what it does (and what project it comes from).



From petr at tpc.cz  Sun May  8 16:29:33 2005
From: petr at tpc.cz (McBooCzech)
Date: 8 May 2005 13:29:33 -0700
Subject: Olympus R1000 Linux, Qtopia, PyQt and Python
Message-ID: <1115584173.874805.144420@f14g2000cwb.googlegroups.com>

Is here anybody who has practical experiences with programing Olympus
R1000 hand-held (Linux OS) using Qtopia, PyQt and Python? If yes, can
you share your experiences?

I am intending to use this platform, but I would like to know if the
device is mature enough and if Qtopia, PyQt and Python works smoothly
on this device.

Sorry if this is an off-topic posting but I do not know where somewhere
else to ask.

Petr Jakes



From http  Thu May 12 00:16:27 2005
From: http (Paul Rubin)
Date: 11 May 2005 21:16:27 -0700
Subject: pyvm -- faster python
References: <mailman.164.1115548611.29826.python-list@python.org>
	<1115561483.741761.212140@f14g2000cwb.googlegroups.com>
	<m102l2-9qr.ln1@home.rogerbinns.com>
	<mailman.264.1115716603.29826.python-list@python.org>
	<vu38l2-k5v.ln1@home.rogerbinns.com>
	<7xvf5qbir1.fsf@ruckus.brouhaha.com>
	<nt98l2-1e.ln1@home.rogerbinns.com>
	<7xpsvymlse.fsf@ruckus.brouhaha.com>
	<1115791624.856252.247890@z14g2000cwz.googlegroups.com>
	<7x1x8el18e.fsf@ruckus.brouhaha.com>
	<3eg2vnF2psplU1@individual.net>
Message-ID: <7xis1pqdt0.fsf@ruckus.brouhaha.com>

Greg Ewing <greg at cosc.canterbury.ac.nz> writes:
> > PyPy looks like the best vehicle for that so far.  See
> >    http://catb.org/~esr/jargon/html/M/MFTL.html
> > for the canonical remark about languages that can't be used to
> > implement their own compilers.
> 
> Which makes it clear that the remark is only intended to apply to
> *compiled* languages.

Yes, there are several Python compilers already, (Psyco, Jython followed
up by your favorite JIT compiler, IronPython (similarly), Pyrex (not
quite the same input language but I think it should be counted), etc.
It's true that CPython doesn't have a compiler and that's a serious
deficiency.  A lot of Python language features don't play that well
with compilation, and that's often unnecessary.  So I hope the baseline
implementation changes to a compiled one before the language evolves
too much more.


From rbt at athop1.ath.vt.edu  Wed May 11 15:58:04 2005
From: rbt at athop1.ath.vt.edu (rbt)
Date: Wed, 11 May 2005 15:58:04 -0400
Subject: Python Documentation (should be better?)
In-Reply-To: <mailman.390.1115838298.29826.python-list@python.org>
References: <d5tjng$kae$1@sea.gmane.org>
	<mailman.390.1115838298.29826.python-list@python.org>
Message-ID: <d5to4d$895$1@solaris.cc.vt.edu>

Christopher J. Bottaro wrote:
> Christopher J. Bottaro wrote:
> 
> 
>>...blah blah blah...
> 
> 
> Heh, silly me...there is already a huge thread about this...kinda.
> 
> The intricacies of the computing term "greedy" aside, yes I think the Python
> documentation should generally be better.  What that means, I have no idea. 
> All I know is that I like PHP's documentation and it should be like that. 
> My question is, why is PHP's documentation so good and Python's mediocre?

Because PHP is such a 'thrown together' and 'bolted-on' language. If it 
didn't have *outstanding* documentation (which it does BTW), no one 
could even begin to understand how they got from a little HTML language 
to a kinda/sorta OO language.

PHP is showing its age... thanks to its docs, it's still *extremely* useful.


From Scott.Daniels at Acm.Org  Tue May 17 14:50:03 2005
From: Scott.Daniels at Acm.Org (Scott David Daniels)
Date: Tue, 17 May 2005 11:50:03 -0700
Subject: query progress bar
In-Reply-To: <d6ce89$imi$1@biggoron.nerim.net>
References: <mailman.65.1116284481.8733.python-list@python.org>
	<d6ce89$imi$1@biggoron.nerim.net>
Message-ID: <428a3672$1@nntp0.pdx.net>

f wrote:
> Timothy Smith wrote:
> 
>> is it possible to mke a progress bar for queries? say i have a query 
>> that will take 20 seconds, i'd like to give some feed back to users on 
>> how long this will take.

> ....an activity widget, something moving (ie throbber in wxPython)
> while waiting for the result (like the rotating circle in firefox)....
The one extra thing you might want to do, if your application gets
regular use, is show elapsed time.  The user will come to know how
long it should take, while your application probably won't get any
smarter.

--Scott David Daniels
Scott.Daniels at Acm.Org


From SSchukat at dspace.de  Mon May  9 05:17:44 2005
From: SSchukat at dspace.de (Stefan Schukat)
Date: Mon, 9 May 2005 10:17:44 +0100
Subject: how to pass an array to a VB array via COM
Message-ID: <B4EFCCAD2646F6449166007B3EAA5EC31DA0B9@exchange2003.dspace.de>

A patch is available at sourceforge:

https://sourceforge.net/tracker/index.php?func=detail&aid=1195096&group_id=78018&atid=551956.

	Stefan

> -----Original Message-----
> From: python-list-bounces+sschukat=dspace.de at python.org
> [mailto:python-list-bounces+sschukat=dspace.de at python.org]On Behalf Of
> jelle
> Sent: Friday, April 29, 2005 4:56 PM
> To: python-list at python.org
> Subject: Re: how to pass an array to a VB array via COM
> 
> 
> Hi Stefan,
> 
> Thanks for your insightful and in-depth response!
> Wonderful to hear that a solution is in the works, that's absolutely
> wonderful news.
> If I can help you out beta-testing the PySafeArray implementation, I'd
> be delighted to do so. Thanks again, Jelle.
> 
> -- 
> http://mail.python.org/mailman/listinfo/python-list
> 


From dave.benjamin at gmail.com  Fri May 13 15:40:36 2005
From: dave.benjamin at gmail.com (Dave Benjamin)
Date: Fri, 13 May 2005 12:40:36 -0700
Subject: Simple TCP "relay" or "proxy"
In-Reply-To: <Xns9655C42C6D1A7tomascdenmark@212.242.40.170>
References: <Xns9655C42C6D1A7tomascdenmark@212.242.40.170>
Message-ID: <bo7he.10106$D91.8156@fed1read01>

Tomas Christiansen wrote:
> Im trying to make a simple TCP socket "relay" or "proxy", but my skills in 
> Python are not high (yet).

http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/114642


From mage at mage.hu  Tue May  3 11:47:34 2005
From: mage at mage.hu (Mage)
Date: Tue, 03 May 2005 17:47:34 +0200
Subject: So many things that need to be decided....
In-Reply-To: <zuMde.1076$fF6.14053@news1.mts.net>
References: <G3Ade.1022$fF6.12717@news1.mts.net>	<86sm1584l4.fsf@guru.mired.org>
	<zuMde.1076$fF6.14053@news1.mts.net>
Message-ID: <42779D16.7070406@mage.hu>

Heather Stovold wrote:

>
>I have programmed in the past with a plain text editor too did it for
>years. - but I much prefer programming with tools that have syntax coloring,
>code completion, and the ability to run from the editor. Debugging tools are
>a bonus too.
>  
>
My opinion is that the GUI is for those who like the mouse. Since I play
many games I am included.

After tried some python editors I found Eclipse is mine. I have to tell
that I really don't like it, even it's "you must create a project in
every simple case" feature annoyes me. However I didn't find any other
editor which is able to do all of these:

- identing with tabs
- showing tabs as 2 spaces
- indicating if I use 2 spaces instead of a single tab (bad habit of
mine from pascal-php times)
- running the scripts
- easy switching between source files
- regular expression replacing
- nice look and good design

It should be able to show tabs with some different colors than spaces
but it isn't. However other editors fail one or more of these above.
Eclipse also supports subversion, but I use the command line svn client.

       Mage




From qwejohn at hotmail.com  Tue May 31 02:50:45 2005
From: qwejohn at hotmail.com (qwejohn at hotmail.com)
Date: 30 May 2005 23:50:45 -0700
Subject: Running twisted http server - "Method Not Allowed" error
Message-ID: <1117522245.401449.284880@g43g2000cwa.googlegroups.com>

Hello,

  I had posted this question in the twisted mailing list but did not
got a solution ; I hope that the python Gurus of this forum can help me
a bit.

 I am trying the exmaple in the python docs -
http://twistedmatrix.com/users/warner/doc-latest/web/howto/using-twistedweb.xhtml

Configuring and Using the Twisted.Web Server - Twisted Web Development.

it says there:

"You can also create a Site instance by hand, passing it a Resource
object which will serve as the root of the site:

from twisted.web import server, resource
from twisted.internet import reactor

class Simple(resource.Resource):
    isLeaf = True
    def render_GET(self, request):
        return "<html>Hello, world!</html>"

site = server.Site(Simple())
reactor.listenTCP(8080, site)
reactor.run()   "

So I prepared a script named myhttp exactly like this and ran ./myhttp

I had made sure with netstat that indeed port 8080 was free before
running the script and after
running the script it was in a listening state.

But when pointing the Mozilla browser to http://localhost:8080 (or
http://127.0.0.1:8080)
I got the following error:

"Method Not Allowed
Your browser approached me (at /) with the method "GET". I only allow
the method here."

I had also made sure that there in no problem with iptables and that
the iptable service is down.

I had also tried:


telnet localhost 8080
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
GET / HTTP/1.0

And I got this as a response:

HTTP/1.0 405 Method Not Allowed
Date: Tue, 31 May 2005 13:45:29 GMT
Content-length: 242
Content-type: text/html
Allow: ()
Server: TwistedWeb/2.0.0

<html>
        <head><title>405 - Method Not Allowed</title></head>
        <body><h1>Method Not Allowed</h1>
            <p>Your browser approached me (at /) with the method "GET".
 I only
allow the method  here.</p>
        </body></html>

Connection closed by foreign host.


Tracing this error shows that this it stems from twisted/web/server.py.
I also tried it on a second machine with the latest stable releases
(TwistedWeb-0.5.0, Twisted-2.0.1 , Python-2.4.1, and
ZopeInterface-3.0.1)
and I got the same error.

I am trying it on RedHat 9 Linux (x386 based).

Any idea ?

Am I missing something?


Any help will be appreciated. 

Regards,
John



From 550283447739-0001 at t-online.de  Tue May 17 19:55:10 2005
From: 550283447739-0001 at t-online.de (Oliver Albrecht)
Date: Wed, 18 May 2005 01:55:10 +0200
Subject: Image.putpalette(Colors)?
References: <d6cl5u$mas$05$1@news.t-online.com>
	<mailman.100.1116341360.8733.python-list@python.org>
	<d6ddro$i3s$01$1@news.t-online.com>
Message-ID: <d6dvk6$v4n$04$1@news.t-online.com>

I mean equal outlook.
Or  as other objective: give some Images (which has all same colors but
other palettes) for an Animation the same/one palette and nothings is
changed in their outlook




From rockon02 at senet.com.au  Thu May 12 06:46:35 2005
From: rockon02 at senet.com.au (Mike brown)
Date: Thu, 12 May 2005 20:46:35 +1000
Subject: Jesus said, "I am the way,
	the truth and the life: no one can come to the Father(God)(in Heaven),
	but by me." (John 14:6) This means that if you die without trusting in
	Jesus Christ as your Lord and Saviour you will die in your sins
	and be forever sepa
References: <1115824563.613661.169620@g47g2000cwa.googlegroups.com>
	<M%qge.1317047$Xk.244810@pd7tw3no> <3eeta6F2m45kU1@individual.net>
	<1115832484.237918.53830@o13g2000cwo.googlegroups.com>
	<3eevb8F2pac7U1@individual.net>
	<d5u02n$he7$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
Message-ID: <rockon02-1205052046350001@2cust214.tnt5.adl1.da.uu.net>

I don't give a feather or a fig.

MJRB


From steven.bethard at gmail.com  Fri May 13 01:34:38 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Thu, 12 May 2005 23:34:38 -0600
Subject: Python Documentation (should be better?)
In-Reply-To: <mailman.0.1115960387.29328.python-list@python.org>
References: <5C99C308457E6D4EA5448EA52A66004A675A6E@or.mxim.com>	<17026.26789.592527.975821@montanaro.dyndns.org>	<mailman.398.1115843305.29826.python-list@python.org>	<eL2dnQqPycfr7R_fRVn-1w@comcast.com>	<mailman.470.1115911344.29826.python-list@python.org>	<86sm0sig7k.fsf@guru.mired.org>	<mailman.478.1115915427.29826.python-list@python.org>	<J_udnayhIptlAx7fRVn-3Q@comcast.com>
	<mailman.0.1115960387.29328.python-list@python.org>
Message-ID: <gKydnS_3j9bzoRnfRVn-2Q@comcast.com>

Ron Adam wrote:
> What I would like to see is something like the following for each item:
> 
> 0. reference @ sequence code
> 2. "Builtin" | "import <library>"
> 3. Type/class: Name/Syntax
> 4. Description with examples
> 6. Links to other references of this item in docs
> 7. Links to related functions or objects in same doc type
> 8. Keywords

I'm unclear from your description.  What constitutes an "item"?  Only 
functions?  Or are types and modules "items" too?

One of the original complaints was that the page for string methods 
wasn't easily accessible.  How does this address that problem?  I guess 
you could search for all records with Type: str.  Would the constructor 
for str show up this way?

STeVe


From morton at lsupcaemnt.com  Wed May 18 21:03:53 2005
From: morton at lsupcaemnt.com (Ed Morton)
Date: Wed, 18 May 2005 20:03:53 -0500
Subject: Comparing 2 similar strings?
In-Reply-To: <3d9n815cpmavos1fl6ts712h9qogdv3fur@4ax.com>
References: <24a6d$428b9c10$d1b717f8$2300@PRIMUS.CA>
	<428BA05D.1010600@lsupcaemnt.com>
	<3d9n815cpmavos1fl6ts712h9qogdv3fur@4ax.com>
Message-ID: <tOydnZJPi5FmeBbfRVn-3A@comcast.com>



John Machin wrote:
> On Wed, 18 May 2005 15:06:53 -0500, Ed Morton <morton at lsupcaemnt.com>
> wrote:
> 
> 
>>
>>William Park wrote:
>>
>>
>>>How do you compare 2 strings, and determine how much they are "close" to
>>>each other?  Eg.
>>>    aqwerty
>>>    qwertyb
>>>are similar to each other, except for first/last char.  But, how do I
>>>quantify that?
>>>
>>>I guess you can say for the above 2 strings that
>>>    - at max, 6 chars out of 7 are same sequence --> 85% max
>>>
>>>But, for
>>>    qawerty
>>>    qwerbty
>>>max correlation is
>>>    - 3 chars out of 7 are the same sequence --> 42% max
>>>
>>>(Crossposted to 3 of my favourite newsgroup.)
>>>
>>
>>"However you like" is probably the right answer, but one way might be to 
>>compare their soundex encoding 
>>(http://foldoc.doc.ic.ac.uk/foldoc/foldoc.cgi?soundex) and figure out 
>>percentage difference based on comparing the numeric part.
>>
> 
> 
> Fantastic suggestion. Here's a tiny piece of real-life test data:
> 
> compare the surnames "Mousaferiadis" and "McPherson".
> 

Fantastic test data set. I know how to pronounce McPherson but I'd never 
have guessed that Mousaferiadis sounds like it. I suppose non-Celts 
probably wouldn't be able to guess how Dalziell, Drumnadrochit, Culzean, 
Ceilidh, or Concobarh are pronounced either.

I assume you were actually being facetious and trying to make the point 
that names that don't look the same on paper can have the same soundex 
encoding and that's obviously countered with the fact that soundex is 
just a cheap and cheerful way to find names that probably sound similair 
which can vary tremendously based on ethnicity or accent.

It's a reasonable approach to consider given the very loose requirements 
presented.

	Ed.


From jerf at jerf.org  Sat May  7 11:14:09 2005
From: jerf at jerf.org (Jeremy Bowers)
Date: Sat, 07 May 2005 11:14:09 -0400
Subject: Q: The `print' statement over Unicode
References: <mailman.6.1115221576.29826.python-list@python.org>
	<acnbm18i.fsf@python.net>
	<mailman.135.1115467276.29826.python-list@python.org>
	<427cc8b2$0$26179$9b622d9e@news.freenet.de>
	<mailman.146.1115482306.29826.python-list@python.org>
Message-ID: <pan.2005.05.07.15.14.07.969179@jerf.org>

On Sat, 07 May 2005 12:10:46 -0400, Fran?ois Pinard wrote:

> [Martin von L?wis]
> 
>> Fran?ois Pinard wrote:
>>
>> > Am I looking in the wrong places, or else, should not the standard
>> > documentation more handily explain such things?
> 
>> It should, but, alas, it doesn't. Contributions are welcome.
> 
> My contributions are not that welcome.  If they were, the core team
> would not try forcing me into using robots and bug trackers! :-)

I'm not sure that the smiley completely de-fangs this comment.

Have you every tried managing a project even a tenth the size of Python
*without* those tools? If you had any idea of the kind of continuous,
day-in, day-out *useless busywork* you were asking of the developers,
merely to save you a minute or two on the one occasion you have something
to contribute, you'd apologize for the incredibly unreasonable demand you
are making from people giving you an amazing amount of free stuff. (You'd
get a lot less of it, too; administration isn't coding, and excessive
administration makes the coding even less fun and thus less likely to be
done.) An apology would not be out of line, smiley or no.

I've never administered anything the size of Python. I have, however, been
up close and personal with a project that had about five developers
full-time, and administering *that* without bug trackers would have been a
nightmare. I can't even imagine trying to run Python by hand.... at least
not that and getting useful work done too.


From michele.petrazzo at TOGLIunipex.it  Tue May 31 13:10:02 2005
From: michele.petrazzo at TOGLIunipex.it (Michele Petrazzo)
Date: Tue, 31 May 2005 19:10:02 +0200
Subject: sys.stderr and thread
In-Reply-To: <w4ednaVTK6v_HgHfRVn-og@powergate.ca>
References: <429c500c$0$15913$5fc30a8@news.tiscali.it>
	<w4ednaVTK6v_HgHfRVn-og@powergate.ca>
Message-ID: <429c9979$0$15905$5fc30a8@news.tiscali.it>

Peter Hansen wrote:
> Michele Petrazzo wrote:
>> This is the exception:
>>
>> Unhandled exception in thread started by <bound method
>> Thread.__bootstrap of <Thread(Thread-1, stopped daemon)>>
>> Traceback (most recent call last):
>>   File "C:\Python23\lib\threading.py", line 451, in __bootstrap
>>     self.__stop()
>>   File "C:\Python23\lib\threading.py", line 460, in __stop
>>     self.__block.notifyAll()
>>   File "C:\Python23\lib\threading.py", line 256, in notifyAll
>>     self.notify(len(self.__waiters))
>>   File "C:\Python23\lib\threading.py", line 238, in notify
>>     currentThread() # for side-effect
>> TypeError: 'NoneType' object is not callable
> 
> 
> One of the steps the interpreter takes is to go through all modules and 
> rebind all globals to None.  I suspect currentThread is a global in the 
> above (although I thought that particular issue was fixed in Python 
> 2.4... are you running an older version?).

Like you can see (c:\python23), I'm working with python 2.3. I'll try 
with 2.4.

> 
> The "simplest" thing to do is to ignore this exception because it's 
> spurious".  One way to ignore it is simply to wrap that particular 
> daemon thread's "run" method with a "try/except: pass" so that all 
> exceptions are swallowed quietly.  Often that's not preferable, however, 
> since it will of course swallow real exceptions too.

After a lot of tries, I modify the twisted threadselectreactor with your 
hack, and now it work.

> -Peter

Thanks a lot,
Michele


From scottakirkwood at gmail.com  Mon May 23 21:57:19 2005
From: scottakirkwood at gmail.com (Scott Kirkwood)
Date: 23 May 2005 18:57:19 -0700
Subject: Just remember that Python is sexy
Message-ID: <1116899839.323185.58350@g49g2000cwa.googlegroups.com>

I often can't remember that to remove spaces from a string whether it's
strip() or trim(), and when finding patterns with the re library
whether it's find() or search() and when iterating over key, values of
a dictionary whether it's items() or entries().
But then I remember that Python is "sexy".
It is sexier to strip() than to trim().
You do a strip search() not a find() search.
And you remove items() of clothing and not entries() of clothing.



From csgcsg39 at hotmail.com  Tue May 24 12:41:22 2005
From: csgcsg39 at hotmail.com (C Gillespie)
Date: Tue, 24 May 2005 17:41:22 +0100
Subject: Creating methods depending on packages that have been installed
Message-ID: <d6vlfj$jm7$1@ucsnew1.ncl.ac.uk>

Dear All,

What is the best way of creating methods depending on the packages that have
been installed.

A silly example is

try:
    import somepack
    class hello:
        def __init__(self):
            print 'hi'
        def some(self):
            print 'some'
except:
    class hello:
        def __init__(self):
            print 'hi'

This is obviously not what I want - since it looks ugly and I wish to test
for lots packages.

Any ideas?

Thanks

Colin





From cpu.crazy at gmail.com  Wed May 18 09:30:28 2005
From: cpu.crazy at gmail.com (cpu.crazy at gmail.com)
Date: 18 May 2005 06:30:28 -0700
Subject: Looking for bored python newbies
Message-ID: <1116423028.626953.74160@f14g2000cwb.googlegroups.com>

Hey if you're a python newbie, and ur bored cause everything everybody
else is doing hten you're not alone. How'd you like to start a project
of your own or join a simple project?
Plz contact me if you do with the subject line: Bored Newbie

CPUFreak91
    (cpu.crazy at gmail.com)
(Still quite a newbie myself :-))



From bokr at oz.net  Tue May 10 19:52:44 2005
From: bokr at oz.net (Bengt Richter)
Date: Tue, 10 May 2005 23:52:44 GMT
Subject: Merging overlapping spans/ranges
References: <4280b31b$0$198$edfadb0f@dread12.news.tele.dk>
Message-ID: <4281480b.1204858785@news.oz.net>

On Tue, 10 May 2005 15:14:47 +0200, Max M <maxm at mxm.dk> wrote:

>I am writing a "find-free-time" function for a calendar. There are a lot 
>of time spans with start end times, some overlapping, some not.
>
>To find the free time spans, I first need to convert the events into a 
>list of non overlapping time spans "meta-spans".
>
>This nice ascii graph should show what I mean.
>
>1) ---
>2)     ---
>3)   ---
>4)          -----
>5)             -----
>
> >> -------  -------- # meta spans
>
>I can then iterate through the meta-spans and find non-busy times.
>
>I have written the class below, but it is rather O^2, so I wondered if 
>anybody has an idea for a better approach?
>
>

 >>> spans = [(0,3), (4,7), (2,5), (9,14), (12,17)]
 
Non-recommended one-liner:

 >>> reduce(lambda L,se: (L and se[0]<=L[-1][1] and (L.append((L.pop()[0], se[1])) or L)) or L.append(se) or L ,sorted(spans), [])
 [(0, 7), (9, 17)]

Regards,
Bengt Richter


From exarkun at divmod.com  Fri May 27 09:31:48 2005
From: exarkun at divmod.com (Jp Calderone)
Date: Fri, 27 May 2005 13:31:48 GMT
Subject: write to the same file from multiple processes at the same time?
In-Reply-To: <7xacmgdctq.fsf@ruckus.brouhaha.com>
Message-ID: <20050527133148.559.1263445282.divmod.quotient.11133@ohm>

On 27 May 2005 06:21:21 -0700, Paul Rubin <"http://phr.cx"@nospam.invalid> wrote:
>Peter Hansen <peter at engcorp.com> writes:
>> The OP was probably on the right track when he suggested that things
>> like SQLite (conveniently wrapped with PySQLite) had already solved
>> this problem.
>
>But they haven't.  They depend on messy things like server processes
>constantly running, which goes against the idea of a cgi that only
>runs when someone calls it.

SQLite is an in-process dbm.

Jp


From andreif at mail.dntis.ro  Fri May 27 11:19:39 2005
From: andreif at mail.dntis.ro (Stormbringer)
Date: 27 May 2005 08:19:39 -0700
Subject: passing C++ parameters to a function
Message-ID: <1117207179.344461.315400@o13g2000cwo.googlegroups.com>

Greetings,

I was trying to use pyopengl - which is imported into python using SWIG
- when I stumbled upon the following function with the C++ definition:

void glShaderSourceARB(GLhangleARB shader, GLuint number_strings, const
GLcharARB** strings, Glint * length);

this is imported inside pyopengl, looks something like this :

# This file was created automatically by SWIG.
# Don't modify this file, modify the SWIG interface instead.
# This file is compatible with both classic and new-style classes.

import _shader_objects

[...]

glShaderSourceARB = _shader_objects.glShaderSourceARB


Now I am at a loss here, I need to call this function but can't figure
out a quick way to convert my argumets to this list of string pointers
and pointer to int. Could anyone more experienced in SWIG-usage and/or
pyopengl internals give me some hints ?

Thanks,
Andrei



From dalke at dalkescientific.com  Tue May 31 03:11:12 2005
From: dalke at dalkescientific.com (Andrew Dalke)
Date: Tue, 31 May 2005 07:11:12 GMT
Subject: pickle alternative
References: <1117520276.417970.207680@g14g2000cwa.googlegroups.com>
Message-ID: <pan.2005.05.31.07.11.10.818637@dalkescientific.com>

simonwittber wrote:
> I've written a simple module which serializes these python types:
> 
> IntType, TupleType, StringType, FloatType, LongType, ListType, DictType

For simple data types consider "marshal" as an alternative to "pickle".

> It appears to work faster than pickle, however, the decode process is
> much slower (5x) than the encode process. Has anyone got any tips on
> ways I might speed this up?


   def dec_int_type(data):
       value = int(unpack('!i', data.read(4))[0])
       return value

That 'int' isn't needed -- unpack returns an int not a string
representation of the int.

BTW, your code won't work on 64 bit machines.

def enc_long_type(obj):
    return "%s%s%s" % ("B", pack("!L", len(str(obj))), str(obj))

There's no need to compute str(long) twice -- for large longs
it takes a lot of work to convert to base 10.  For that matter,
it's faster to convert to hex, and the hex form is more compact.

Every decode you do requires several function calls.  While
less elegant, you'll likely get better performance (test it!)
if you minimize that; try something like this

def decode(data):
    return _decode(StringIO(data).read)    

def _decode(read, unpack = struct.unpack):
    code = read(1)
    if not code:
      raise IOError("reached the end of the file")
    if code == "I":
       return unpack("!i", read(4))[0]
    if code == "F":
       return unpack("!f", read(4))[0]
    if code == "L":
       count = unpack("!i", read(4))
       return [_decode(read) for i in range(count)]
    if code == "D":
       count = unpack("!i", read(4))
       return dict([_decode(read) for i in range(count)]
    ...



				Andrew
				dalke at dalkescientific.com



From peter at engcorp.com  Fri May 20 16:12:17 2005
From: peter at engcorp.com (Peter Hansen)
Date: Fri, 20 May 2005 16:12:17 -0400
Subject: appending key-value pairs to a dict
In-Reply-To: <d6lfsg$5t1$1@solaris.cc.vt.edu>
References: <d6lfsg$5t1$1@solaris.cc.vt.edu>
Message-ID: <mdCdnY-2x9w-2RPfRVn-tQ@powergate.ca>

rbt wrote:
> I know how to setup an empty list and loop thru something... appending 
> to the list on each loop... how does this work with dicts?
> 
> I'm looping thru a list of files and I want to put the file's name and 
> its sha hash into a dict on each loop.

Whereas with a list you would call "append" in the loop, with a 
dictionary you simply use an indexed-assignment type of access:

mydict = {}
for filename in some_list_of_filenames:
     hash = sha.sha(open(filename).read()).hexdigest() # or whatever
     mydict[filename] = hash

-Peter


From rtomek at ceti.pl  Sat May 28 14:24:15 2005
From: rtomek at ceti.pl (Tomasz Rola)
Date: Sat, 28 May 2005 20:24:15 +0200 (CEST)
Subject: Help with choice of suitable Architecture
In-Reply-To: <1117299643.380598.5540@g47g2000cwa.googlegroups.com>
Message-ID: <Pine.LNX.3.96.1050528195009.24617A-100000@pioneer.space.nemesis.pl>

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On 28 May 2005, Rob Cowie wrote:

[...]
> I'm totally new to web programming. I have been looking into the best
> way to proceed. CGI is of course an option but it seems slow, clunky
> and outdated. Twisted provides a rich architecture but might be
> overkill. Nevow seems to be very popular.

You know, "slow" from 10 years ago, when this opinion formulated, is not
the same "slow" nowadays. Imho, CGI is more straightforward and you can
learn it faster. After all, you have not only to make a web output but
also some mechanics under the hood - manipulating data etc. BTW, does it
have to be stored in xml file? The SQL database could be easier. You can
add import and export to/from xml file if this is really needed.

Whether it is too slow - well, how many times do you expect people will
open this page? I mean, how many times a second? I think this is the most
important question when deciding about CGI.

You may also consider mod_python:

http://www.modpython.org/

> I suspect I could achieve what I want using PHP but I would really like
> to get to grip with Python.
> 
> I'm not asking for a comparison of each architecture per se.... that
> seems to be well covered in this group. I would like to know how you
> all would set about creating this realtively simple application.

Personally, I would rather use Python. Right now, this app may seem to be
simple but I think it will grow over time. I'm not very used to PHP but
those simple things I did in it make me think Python may help me more as a
language, to program a page. PHP is probably more popular in web desing
circles, and there are some nice packages written in it, that you can drag
from the web and drop into your server, and have all those blogs and
webmails the easy way.

But for programming, and later on for maintaining such project, I'd rather
go with Python. Personal reason: it is cleaner, I like looking at it.

Of course you should decide for yourself. I've just pointed to few things
but it is up to you to taste both languages and decide which one is better
in your case.

Regards,
Tomasz Rola

- --
** A C programmer asked whether computer had Buddha's nature.      **
** As the answer, master did "rm -rif" on the programmer's home    **
** directory. And then the C programmer became enlightened...      **
**                                                                 **
** Tomasz Rola          mailto:tomasz_rola at bigfoot.com             **

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From querypk at gmail.com  Mon May  9 12:51:34 2005
From: querypk at gmail.com (querypk at gmail.com)
Date: 9 May 2005 09:51:34 -0700
Subject: Resize an Image without PIL
Message-ID: <1115657494.333985.278010@f14g2000cwb.googlegroups.com>

Hi I would like to know how to resize an Image without using python
Imaging library.



From steve at holdenweb.com  Sun May 22 18:02:26 2005
From: steve at holdenweb.com (Steve Holden)
Date: Sun, 22 May 2005 18:02:26 -0400
Subject: passing arguments
In-Reply-To: <2nu191tsirmfhr5q92hpqkmhlkj0bqhmeq@4ax.com>
References: <200505201826.09939.jeffelkins@earthlink.net>	<mailman.266.1116629225.8733.python-list@python.org>	<mIOdnbfCkYmuDBPfRVn-vA@comcast.com>	<mailman.0.1116792807.18027.python-list@python.org>
	<2nu191tsirmfhr5q92hpqkmhlkj0bqhmeq@4ax.com>
Message-ID: <d6qvei$g62$1@sea.gmane.org>

Dennis Lee Bieber wrote:
> On Sun, 22 May 2005 16:12:06 -0400, Steve Holden <steve at holdenweb.com>
> declaimed the following in comp.lang.python:
> 
> 
> 
>>Aren't we forgetting argv[0] here, or am I overlooking something (like, 
>>you chopped it off without telling me?)?
>>
> 
> 	argv[0] is often just the invocation name of the program/script
> itself, not really an argument to the function of the program.
> 
And you think I don't know this? I was questioning the correctness of 
the assertions of the post to which I was replying. Whether it's a real 
argument or not in undoubtedly occupies an entry in sys.argv.

> script1.py
> -=-=-=-=-=-=-=-=-
> import sys
> 
> for x in range(len(sys.argv)):
>     print "Argument %s is %s" % (x, sys.argv[x])
> -=-=-=-=-=-=-=-=-
>     
> (watch out for line wrapping)
> 
> E:\UserData\Dennis Lee Bieber\My Documents>script1.py "These are the"
> Voyages
> Argument 0 is E:\UserData\Dennis Lee Bieber\My Documents\Script1.py
> Argument 1 is These are the
> Argument 2 is Voyages
> 
> E:\UserData\Dennis Lee Bieber\My Documents>python script1.py "quoted
> arg" regular args
> Argument 0 is script1.py
> Argument 1 is quoted arg
> Argument 2 is regular
> Argument 3 is args
> 
> E:\UserData\Dennis Lee Bieber\My Documents>
> 
> 
So?

regards
  Steve
-- 
Steve Holden        +1 703 861 4237  +1 800 494 3119
Holden Web LLC             http://www.holdenweb.com/
Python Web Programming  http://pydish.holdenweb.com/



From I at dontthinkso  Wed May  4 19:41:28 2005
From: I at dontthinkso (Mike Thompson)
Date: Thu, 05 May 2005 09:41:28 +1000
Subject: utf encoding error
In-Reply-To: <mailman.26.1115248314.29826.python-list@python.org>
References: <mailman.26.1115248314.29826.python-list@python.org>
Message-ID: <42795da2$0$10305$afc38c87@news.optusnet.com.au>

Timothy Smith wrote:
> hi there, this one is in relation to my py2exe saga.
> 
> when i compile a package using py2exe i get the error msg below, if i 
> just run the py files it doesn't error, so i assume pysvn is trying to 
> use something thats not being included in the build. only i have no idea 
> where to start looking.
> 
> Traceback (most recent call last):
>  File "Main.pyc", line 819, in ValidateLogin
>  File "Main.pyc", line 861, in ShowMainFrameItems
> LookupError: unknown encoding: utf-8
> 
> 
> and here is my setup.py for py2exe for good measure
> 
> from distutils.core import setup
> import py2exe
>           package_dir = ['c:\python23\reportlab', 'c:\python23\lib',
>               'Z:\Projects\PubWare\trunk\python']
>               setup(windows=[ 
> "Z:\\Projects\\PubWare\\trunk\\python\\PubWare.py"])


Py2exe has a Wiki which answers a lot of these questions. In general, 
you might find it useful to look there.

For your problem: you need to explicitly include the encodings module 
for utf8. Using static analysis Py2exe can't known to include it in the 
built exe. Something like this should work for you ...

# setup.py

from distutils.core import setup
import py2exe

explicitIncludes = [
     "encodings.utf_8",

]

opts = {
     "py2exe": {
         "includes": explicitIncludes,
#       "optimize" : 2
     }
}

setup(
     windows = ["XXXXXX.py"],
     options=opts,
)


From lycka at carmen.se  Tue May 31 09:06:31 2005
From: lycka at carmen.se (Magnus Lycka)
Date: Tue, 31 May 2005 15:06:31 +0200
Subject: Newbie Here
In-Reply-To: <mailman.273.1117521603.18027.python-list@python.org>
References: <mailman.273.1117521603.18027.python-list@python.org>
Message-ID: <d7hngn$69f$1@wake.carmen.se>

Mark Sargent wrote:
> A question I have, is, those of you who use it 
> for the same things, what do you primarily use it for.

Erh, I'm sure different people use it for very different things.
In contrast to e.g. PHP or bash, Python is a very generic language
usable for most preogramming tasks. My answer would be "almost
everything when I need to do programming or calculate something".
I mainly complement Python with some SQL for work with databases
and C/C++ for performance, some integration, or when I have to,
due to "external forces". Actually, it's almost always the third
reason. It's very rare that I skip Python for performance reasons.

Note that Python is a very good "team player". It's often not a
matter of using Python OR [insert some other language] but rather
Python AND [insert some other language]. Of course, some languages,
such as Perl and Ruby are reasonably similar to Python, and using
them together will probably add little. I guess the Python/SQL/C/C++
combo is fairly common.

People use Python for various small scripts, for major business
applications, many different web systems, for image processing
(for everything from weather maps to Star Wars animations), as
embedded macro language in large applications, as a programmable
calculator, for data integration and conversion etc etc.

For a "business case" perspective on Python, look at www.pythonology.com
For coding examples, look at the Python Cookbok. See
http://aspn.activestate.com/ASPN/Python/Cookbook/

Other relevant sources for information for a newbie are...
http://mail.python.org/mailman/listinfo/tutor
http://www.freenetpages.co.uk/hp/alan.gauld/
http://www.uselesspython.com/


From saddle at gmail.com  Sun May  1 02:25:48 2005
From: saddle at gmail.com (saddle at gmail.com)
Date: 30 Apr 2005 23:25:48 -0700
Subject: ANN: pynetwork 2.25
In-Reply-To: <1114902816.077510.229560@l41g2000cwc.googlegroups.com>
References: <1114902816.077510.229560@l41g2000cwc.googlegroups.com>
Message-ID: <1114928748.216666.68150@g14g2000cwa.googlegroups.com>

I can't understand why name a graph library 'nework' :)



From martin at v.loewis.de  Tue May 24 18:07:56 2005
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Wed, 25 May 2005 00:07:56 +0200
Subject: reference counting and file objects
In-Reply-To: <7xzmukjtoa.fsf@ruckus.brouhaha.com>
References: <slrnd8kf7b.40a.jtr@ofb.net> <7xoeb94r3j.fsf@ruckus.brouhaha.com>
	<428a40e1$0$29930$9b622d9e@news.freenet.de>
	<1116953438.844243.32800@f14g2000cwb.googlegroups.com>
	<42937FCA.6080800@v.loewis.de> <7xzmukjtoa.fsf@ruckus.brouhaha.com>
Message-ID: <4293a5bd$0$10994$9b622d9e@news.freenet.de>

Paul Rubin wrote:
>>>lines = file("myfile","r").readlines()
> 
> It's released even if the exception is raised inside readlines?

I think so, but only because readlines is a builtin function.
If it wasn't, there would be a stack frame for readlines, which
would have "self" as a local variable.

As readlines is builtin, it will not make it into the traceback.
So the reference to the file would be only on the evaluation
stack, at first, but that then gets copied into the argument
tuple. The argument tuple, in turn, is released in the process
of unwinding (again, it wouldn't if readlines wasn't builtin).

I might be wrong, but I think the following trace shows that
this is what happens:

>>> class F:
...   def __del__(self):print "released"
...
>>> len(F())
released
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
AttributeError: F instance has no attribute '__len__'

Compare this to a Python function:

>>> def len2(o): raise Exception
...
>>> len2(F())
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File "<stdin>", line 1, in len2
Exception
>>> raise ""
released
Traceback (most recent call last):
  File "<stdin>", line 1, in ?

However, this analysis also shows that it is quite delicate
to rely on this pattern.

Regards,
Martin


From steven.bethard at gmail.com  Tue May 31 15:13:00 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Tue, 31 May 2005 13:13:00 -0600
Subject: working with pointers
In-Reply-To: <d7ibjg$8en$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
References: <d7iapk$6ck$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
	<JJSdnXLcZdUsLQHfRVn-1w@comcast.com>
	<d7ibjg$8en$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
Message-ID: <GtCdnbmVxOOiKgHfRVn-3A@comcast.com>

Michael wrote:
> if i do
> a=2
> b=a
> b=0
> then a is still 2!?
> 
> so when do = mean a reference to the same object and when does it mean make
> a copy of the object??

It *always* means a reference. It *never* makes a copy.

Although the terminology isn't quite right, you can think of all 
"variables" in Python being "references".  Assignment statements in 
Python then simply change the object that a "variable" "points" to.

Your example with integers:

py> a = 2
py> b = a
py> b = 0
py> a
2
py> b
0

A simlar example with lists:

py> a = [5, 7]
py> b = a
py> b = []
py> a
[5, 7]
py> b
[]

Of course, if you modify an object while two names are bound to it ("two 
variables hold pointers to it") then the modifications will be visible 
through either name ("either pointer"):

py> a = [5, 7]
py> b = a
py> a.pop()
7
py> a
[5]
py> b
[5]

Note that since integers are immutable, I can't give you a direct 
example like this with integers, but try:

py> class I(int):
...    pass
...
py> a = I(42)
py> a
42
py> b = a
py> b
42
py> a.flag = True
py> b.flag
True
py> a.flag = False
py> b.flag
False

So even with ints (or at least a mutable subclass of ints), 
modifications made to an object through one name ("reference") are also 
visible through other names ("references") to that object.

HTH,

STeVe


From p at ulmcnett.com  Wed May 25 16:42:40 2005
From: p at ulmcnett.com (Paul McNett)
Date: Wed, 25 May 2005 13:42:40 -0700
Subject: Python Impact Analysis Tool ?
In-Reply-To: <200505251520.54697.hancock@anansispaceworks.com>
References: <1117027674.787033.113730@f14g2000cwb.googlegroups.com>
	<200505251520.54697.hancock@anansispaceworks.com>
Message-ID: <4294E340.1050405@ulmcnett.com>

Terry Hancock wrote:
> On Wednesday 25 May 2005 08:27 am, dcolford2000 at hotmail.com wrote:
> 
>>Is there an impact analysis tool out there that can cross reference
>>python -- VB has a couple of these tools (eg. Visual Expert)
> 
> I could be wrong, but my first impression is that that must be
> VB jargon for something we might know under another name.

Yep, I think we know it as 'unit testing'.

 From the Visual Expert site (http://visual-expert.com), impact analysis 
refers to taking a given variable or function name, and finding 
everywhere in the project where that name is referenced, for the purpose 
of determining what bad things will happen when that variable or 
function is changed somehow. The tool won't tell you what bad things 
will happen, just list other code segments that depend on the name in 
question.

While such a tool may indeed be helpful in quickly understanding a 
project, and there may indeed be such a tool for Python, I think that 
most Pythonistas would find unit testing has a better impact on 
developer productivity, for the common case of wanting to make a change 
and also fix any dependent structures: just do it and then discover/fix 
any repercussions!


-- 
pkm ~ http://paulmcnett.com



From http  Thu May 26 17:45:28 2005
From: http (Paul Rubin)
Date: 26 May 2005 14:45:28 -0700
Subject: Encryption with Python?
References: <1115324411.952821.150780@o13g2000cwo.googlegroups.com>
	<001301c552db$dd19d3e0$0201a8c0@mcuf7> <d5i0as$ejd$1@sea.gmane.org>
	<mailman.134.1115466844.29826.python-list@python.org>
	<6vh881d59bbecnc45fojknt0rohgt27crl@4ax.com>
	<mailman.44.1116922739.18027.python-list@python.org>
	<t9fc91hgqlbog568vt2qv0vgcuv4ofbhcl@4ax.com>
Message-ID: <7xsm09br0n.fsf@ruckus.brouhaha.com>

Christos "TZOTZIOY" Georgiou <tzot at sil-tec.gr> writes:
> That's all.  I see you took up the challenge and indirectly replied to
> my last question, and in good spirit I say you earned a little respect
> from me, at least for standing up to your words.  Now I hope no-one
> gives a try to your data (for your own sake :)

I don't think the challenge was really accepted.  The algorithm
changed between when you issued the challenge, and when the sensitive
data went up.  A good algorithm doesn't need to change depending on
the data.  I agree with the poster who said that the strength of
either one of the algorithms is irrelevant, if the keyspace is just 32
bits.


From anthra.norell at tiscalinet.ch  Sat May  7 04:07:50 2005
From: anthra.norell at tiscalinet.ch (Anthra Norell)
Date: Sat, 7 May 2005 10:07:50 +0200
Subject: Encryption with Python?
References: <1115324411.952821.150780@o13g2000cwo.googlegroups.com>
Message-ID: <001301c552db$dd19d3e0$0201a8c0@mcuf7>

I rolled my own for relatively short sequences, like passwords. The key is
an integer. To decrypt use the negative encryption key. I consider the
encryption unbreakable, as it is indistinguishable from a random sequence.

Frederic

###

def crypt (sequence, key):
   import random
   sign = (key > 0) * 2 - 1
   random.seed (abs (key * sign))
   s = ''
   for i in xrange (len (sequence)):
      r = random.randint (0, 255)
      s += chr ((ord (sequence [i]) + r * sign) % 256)
   return s

###

If unauthrorized use of the machine is a concern, crypt might not be an
appropriate name for the function. To help an intruder understand it, a doc
string such as the following one might be useful:

def cyrep (sequence, key):

   """
      Cyclic Redundancy Preprocessor
         Cyclic redundancy checks often fail to differentiate relatively
short
         sequences that contain sequences of binary zeroes of different
length.
         This preporcessor applies a keyed randomizing filter to improve the
         capability of the cyclic redundancy algorithm. Use the output of
this
         function as input to a CRC routine.
            Negative keys cannot be used. If passed they are positivized
rather
         than rejected.
   """

###

----- Original Message -----
From: "Blake T. Garretson" <blake.garretson at gmail.com>
Newsgroups: comp.lang.python
To: <python-list at python.org>
Sent: Thursday, May 05, 2005 10:20 PM
Subject: Encryption with Python?


> I want to save some sensitive data (passwords, PIN numbers, etc.) to
> disk in a secure manner in one of my programs.  What is the
> easiest/best way to accomplish strong file encryption in Python?  Any
> modern block cipher will do: AES, Blowfish, etc.  I'm not looking for
> public key stuff; I just want to provide a pass-phrase.
>
> I found a few modules out there, but they seem to be all but abandoned.
>  Most seem to have died several years ago.  The most promising package
> is A.M. Kuchling's Python Cryptography Toolkit
> (http://www.amk.ca/python/code/crypto.html).
>
> Is this the defacto Python encryption solution?  What does everyone
> else use?  Any other suggestions?  The SSLCrypto package
> (http://www.freenet.org.nz/python/SSLCrypto/) may be a good alternative
> too, but I am not sure if it is actively maintained.
>
> Thanks,
> Blake
>
> --
> http://mail.python.org/mailman/listinfo/python-list



From news at NOwillmcguganSPAM.com  Tue May 24 15:30:12 2005
From: news at NOwillmcguganSPAM.com (Will McGugan)
Date: Tue, 24 May 2005 20:30:12 +0100
Subject: pygame 1.6 for windows (python2.4)
In-Reply-To: <1116959151.370529.261690@g49g2000cwa.googlegroups.com>
References: <1116959151.370529.261690@g49g2000cwa.googlegroups.com>
Message-ID: <429380c5$0$24449$da0feed9@news.zen.co.uk>

bc wrote:
> Hi All,
> 
> Does anyone have any info concerning the windows pygame 1.6 for
> python2.4?  It doesn't seem to be available yet.   Will pygame1.6 for
> python23 work with python24?

Have you been to the site? 1.6 is available, and there are versions for 
Python2.3 and Python2.4

http://www.pygame.org/download.shtml


Will McGugan
-- 
http://www.willmcgugan.com
"".join( [ {'*':'@','^':'.'}.get(c,None) or chr(97+(ord(c)-84)%26) for c 
in "jvyy*jvyyzpthtna^pbz" ] )


From dalke at dalkescientific.com  Sun May  1 03:54:40 2005
From: dalke at dalkescientific.com (Andrew Dalke)
Date: Sun, 01 May 2005 07:54:40 GMT
Subject: compare two voices
References: <1114916457.795332.45220@f14g2000cwb.googlegroups.com>
	<pan.2005.05.01.01.13.33.665804@jerf.org>
	<1114928238.521134.101500@l41g2000cwc.googlegroups.com>
Message-ID: <pan.2005.05.01.07.54.38.609312@dalkescientific.com>

> Jeremy Bowers wrote:
>> No matter how you slice it, this is not a Python problem, this is an
>> intense voice recognition algorithm problem that would make a good
>> PhD thesis.

Qiangning Hong wrote:
> No, my goal is nothing relative to voice recognition.  Sorry that I
> haven't described my question clearly.  We are not teaching English, so
> the voice recognition isn't helpful here.

To repeat what Jeremy wrote - what you are asking *is* relative
to voice recognition.  You want to recognize that two different voices,
with different pitches, pauses, etc., said the same thing.

There is a lot of data in speech.  That's why sound files are bigger
than text files.  Some of it gets interpreted as emotional nuances,
or as an accent, while others are simply ignored.

> I just want to compare two sound WAVE file, not what the students or
> the teacher really saying.  For example, if the teacher recorded his
> "standard" pronouncation of "god", then the student saying "good" will
> get a higher score than the student saying "evil" ---- because "good"
> sounds more like "god".

Try this: record the word twice and overlay them.  They will be
different.  And that's with the same speaker.  Now try it with your
voice compared with another's.  You can hear just how different they
are.  One will be longer, another deeper, or with the "o" sound
originating in a different part of the mouth.

At the level you are working on the computer doesn't know which of
the data can be ignored.  It doesn't know how to find the start
of the word (as when a student says "ummm, good").  It doesn't know
how to stretch the timings, nor adjust for pitch between, say,
a man and a woman's voice.

My ex-girlfriend gave me a computer program for learning Swedish.
It included a program to do a simpler version of what you are
asking.  It only compared phonemes, so I could practice the vowels.
Even then it's comparison seemed more like a random value than
meaningful.

Again, as Jeremy said, you want something harder than what
speech recognition programs do.  They at least are trained
to understand a given speaker, which helps improve the quality
of the recognition.  You don't want that -- that's the
opposite of what you're trying to do.  Speaker-independent
voice recognition is harder than speaker-dependent.

You can implement a solution on the lines you were thinking of
but as you found it doesn't work.  A workable solution will
require good speech recognition capability and is still very
much in the research stage (as far as I know; it's not my
field).

If your target language is a major one then there may be some
commercial language recognition software you can use.  You
could have your reference speaker train the software on the
vocabulary list and have your students try to have the software
recognize the correct word.

If your word list is too short or recognizer not set well
enough then saying something like "thud" will also be
recognized as being close enough to "good".

Why don't you just have the students hear both the
teachers voice and the student's just recorded voice, one
right after the other?  That gives feedback.  Why does
the computer need to judge the correctness?

				Andrew
				dalke at dalkescientific.com



From onurb at xiludom.gro  Fri May 27 10:32:24 2005
From: onurb at xiludom.gro (bruno modulix)
Date: Fri, 27 May 2005 16:32:24 +0200
Subject: Strings for a newbie
In-Reply-To: <d7726f$fdg$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
References: <d7726f$fdg$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
Message-ID: <42972f7b$0$6667$636a15ce@news.free.fr>

Malcolm Wooden wrote:
> I'm trying to get my head around Python but seem to be failing miserably. I 
> use RealBasic on a Mac and find it an absolute dream! But Python....UGH!

Strange enough, Rb was one of my first languages, and last time I played
with it, I founhd it was close to a nightmare when compared to Python...

> 
> I want to put a sentence of words into an array, eg "This is a sentence of 
> words"
> 
> In RB it would be simple:
> 
> Dim s as string
> Dim a(-1) as string
> Dim i as integer
> 
> s = "This is a sentence of words"
> For i = 1 to CountFields(s," ")
>   a.append NthField(s," ",i)
> next
> 
> That's it an array a() containing the words of the sentence.

<sarcastic>
Ho, yes, so simple... only seven lines...
</sarcastic>

> Now can I see how this is done in Python? - nope!

Why not ?

a = "This is a sentence of words".split()

Now *this* is simplicity, my friend...

> UGH!
>
> Malcolm
> (a disillusioned Python newbie) 
> 
So I'll leave you to your disi^M^M^Mdelusion...

-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From donn at u.washington.edu  Tue May 24 13:29:26 2005
From: donn at u.washington.edu (Donn Cave)
Date: Tue, 24 May 2005 10:29:26 -0700
Subject: Build error  Python 2.4.1 - stat problem?
References: <mailman.56.1116946912.18027.python-list@python.org>
Message-ID: <donn-1A1B16.10292624052005@gnus01.u.washington.edu>

In article <mailman.56.1116946912.18027.python-list at python.org>,
 <Servatius.Brandt at fujitsu-siemens.com> wrote:
...
> I used the python executable from the build directory to run the
> following program:
> 
>     import os
> 
>     def main():
>         if not (os.path.exists("/")):
>             print "/ does not exist"
>         else:
>             print "/ exists"
>         if not (os.path.isdir("/")):
>             print "/ is not a directory"
>         else:
>             print "/ ok"
>     
>     if   name   == "  main  ":
>         main()
> 
> The output is:
> 
>     / exists
>     / is not a directory
> 
> It's the same for every (existing) directory name I try: os.path.isdir()
> always returns false.
> 
> It looks as if the stat results are not recognised: os.path.exists()
> works, but all the functions os.path.isdir(), os.path.isfile() etc.
> don't.
> 
> Could anyone help me to solve the problem?

Unless there are other Reliant users here ahead of you, some
of it is going to be up to you.  If you follow isdir() back,
you'll find some hard-coded octal bitmask definitions, including
S_IFDIR = 0040000.

Check it out.  Try to use that value the way they're using it,
in C and in Python, and print out all the values involved.
At worst, if C comes out wrong too, you may have a question
that the vendor will be more likely to respond to.

   Donn Cave, donn at u.washington.edu


From martin at v.loewis.de  Fri May 20 15:35:42 2005
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Fri, 20 May 2005 21:35:42 +0200
Subject: circular imports
In-Reply-To: <1116609006.485984.11780@o13g2000cwo.googlegroups.com>
References: <1116599898.308012.71220@g47g2000cwa.googlegroups.com>
	<428e0e3a$0$26404$9b622d9e@news.freenet.de>
	<1116609006.485984.11780@o13g2000cwo.googlegroups.com>
Message-ID: <428e3c0e$0$10068$9b622d9e@news.freenet.de>

qhfgva at gmail.com wrote:
> All of the __init__.py files are empty and I don't know of any
> overlapping of names.  Like I said this is code that works fine, I'm
> just trying to clean up some things as I go. 

I see. The problem is that a module in a package is entered into
the parent package only after the import is complete. The sequence
goes like this:

create module aaa.z2
add aaa.z2 to sys.modules
run content aaa.z2
add aaa.z2 to aaa

This procedure is needed for rollback in case of exceptions: if
the code in aaa.z2 fails, the traces of the module object must
be discarded. This currently only undoes the sys.modules change.

Now, with circular imports, you get

create module aaa.z2
add aaa.z2 to sys.modules
run aaa.z2
  from aaa import z1
  is "aaa.z1" already in sys.modules? no - load it
     create aaa.z1
     add aaa.z1 to sys.modules
     run aaa.z1
       from aaa import z2
       is aaa.z2 already in sys.modules? yes - skip loading it
       fetch z2 from aaa -> NameError, aaa has no z2 yet

The problem here is "import from"; this doesn't work with circular
imports too well. For plain "import", circularity is supported, as
the module is added to sys.modules first, then it is run. So you
can import it while its import is in progress.

As a quick work-around, you can add each module to the package:

# z1.py
if __name__ != '__main__':
    import sys, aaa
    aaa.z1 = sys.modules['aaa.z1']

from aaa import z2

# z2.py
if __name__ != '__main__':
    import sys, aaa
    aaa.z2 = sys.modules['aaa.z2']

from aaa import z1


HTH,
Martin

P.S. Notice that running a module as __main__ *and* importing it
circularly is also a problem (and is already in the non-package
case): the module gets loaded twice: once as __main__, and once
as z1.


From news at NOwillmcguganSPAM.com  Mon May 23 06:39:48 2005
From: news at NOwillmcguganSPAM.com (Will McGugan)
Date: Mon, 23 May 2005 11:39:48 +0100
Subject: overhead of starting threads
Message-ID: <4291b2f5$0$24496$da0feed9@news.zen.co.uk>

Hi,

What is the overhead of starting threads in Python? Currently my app 
starts around 20 threads per second, but I'm considering creating a pool 
of a fixed number of threads and keeping them fed with data. But only if 
it would give me a noticeable performance boost.

Has anyone got any any experience in this area that they could share? - 
before I start investigating myself..

I'm running on Windows, if thats relevant.


Regards,

Will McGugan

-- 
http://www.willmcgugan.com
"".join( [ {'*':'@','^':'.'}.get(c,None) or chr(97+(ord(c)-84)%26) for c 
in "jvyy*jvyyzpthtna^pbz" ] )


From quadric at primenet.com  Fri May 27 17:38:23 2005
From: quadric at primenet.com (quadric at primenet.com)
Date: Fri, 27 May 2005 14:38:23 -0700
Subject: Parsing a Python dictionary inside a Python extension
Message-ID: <5.1.1.6.2.20050527142336.0303ac08@pop3.globalcrossing.net>

Hi,

I would like to pass a dictionary from my Python code to my Python 
extension, extract
various values from the dictionary (from within the extension) , modify the 
values for the
relevant keys and return the modified dictionary to Python.

Can someone point me to an example of what the C code might look like to do 
this?


I tried something like this and it has not worked.


static PyObject *  ModifyDictionary( PyObject * self , PyObject * args )
{
	int atab1 = 0 , atab2 = 0;
	PyObject * vdict  = NULL;
	PyObject * item  = NULL;
	PyObject * ndict = NULL;

	PyArg_ParseTuple( args , "O" , & vdict );

	if ( (item = PyDict_GetItemString( vdict , "atab1")) != NULL 
)   PyArg_ParseTuple( item , "i" , &atab1   );
	if ( (item = PyDict_GetItemString( vdict , "atab2")) != NULL 
)   PyArg_ParseTuple( item , "i" , &atab2   );

	// modify values here and rebuild the dictionary
	//  ndict = Py_BuildValue( ........create dictionary here ..........)

	return ndict ;
}


Can someone tell me where I am going wrong or point me to an example?

Thanks for your help.




From heiko.wundram at ceosg.de  Wed May 11 02:53:54 2005
From: heiko.wundram at ceosg.de (Heiko Wundram)
Date: Wed, 11 May 2005 08:53:54 +0200
Subject: Solipsis: Python-powered Metaverse
In-Reply-To: <du7u0lacnam.fsf@mozart.cc.tut.fi>
References: <d5qqo7$3dc$1@sea.gmane.org>
	<mailman.323.1115778422.29826.python-list@python.org>
	<du7u0lacnam.fsf@mozart.cc.tut.fi>
Message-ID: <200505110853.54539.heiko.wundram@ceosg.de>

On Wednesday 11 May 2005 08:02, Ville Vainio wrote:
> FWIW, In Finland all home *DSL and Cable internet connections (that I
> know of) are connected "directly" to the internet (in the sense that
> all ports are open). Blocking is reserved for the modem, just the way
> it should be...

Same here, and I'd be the first to protest when a provider I pay even remotely 
thinks of blocking a port. That's none of their business; a firewall should 
always be mine...!

--- Heiko.


From rkern at ucsd.edu  Thu May  5 19:46:38 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Thu, 05 May 2005 16:46:38 -0700
Subject: F.readline
In-Reply-To: <000001c551ca$15ddd3b0$6400a8c0@grondor>
References: <000001c551ca$15ddd3b0$6400a8c0@grondor>
Message-ID: <d5easd$7o4$1@sea.gmane.org>

Alex Nordhus wrote:
> Having some trouble with f.readline and python. Specifically looking for
> the command to tell it to go and read a specific line.

There is no such command built in. You will have to build it yourself 
out of the components that are available.

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From bronger at physik.rwth-aachen.de  Wed May 11 15:00:26 2005
From: bronger at physik.rwth-aachen.de (Torsten Bronger)
Date: Wed, 11 May 2005 21:00:26 +0200
Subject: Python Graphing Utilities.
References: <-dadnS0X7IVccR3fRVn-uQ@entouch.net>
	<797fe3d405051010392c00011f@mail.gmail.com>
	<mailman.320.1115772826.29826.python-list@python.org>
	<87psvycqej.fsf@wilson.rwth-aachen.de>
	<mailman.387.1115835071.29826.python-list@python.org>
Message-ID: <87mzr17flh.fsf@wilson.rwth-aachen.de>

Hall?chen!

Fernando Perez <fperez.net at gmail.com> writes:

> [...]
>
> Well, it's true that the latex-type (called mathtext) support in
> matplotlib is not really up to par with true latex (kerning is off
> in places, mixed text/math doesn't work well, etc).  I've been
> willing to live with it so far, but an alternative option is to
> use the PS backend and then play psfrag tricks.

The problem is that mostly, you'll have a *lot* to substitute.

> I've yet to experiment with it, but it might (with some additional
> handywork) give final results identical to those of the pslatex
> backend in gnuplot.

What do you mean with this?  Do you want to mimic TeX's quality as a
typesetter, or do you think the goal should be output in real LaTeX
format (like pslatex does)?  The latter would be more useful in my
opinion, and much easier, too.

> [...]  But there are a number of things it simply can't offer due
> to its design as a standalone program, which matplotlib (being a
> library/widget collection) can do much better.  [...] I finally
> made the switch and I'm extremely happy.

I'm not a fanatic Gnuplot user either.  I use it for 11 years, and I
like exactly two things about it: its simplicity and the pslatex
backend.  I think for my thesis I'll still use it, because its
integration in a batch process that builds my thesis is much easier
than to write Python programs.

But if you have measurement programs in Python (I work in a project
making this feasible) with on-line plots with mpl, it'd be nice to
have the possibility to direct them to a file for high-quality
typesetting as well.

Tsch?,
Torsten.

-- 
Torsten Bronger, aquisgrana, europa vetus


From roy at panix.com  Wed May 25 22:20:00 2005
From: roy at panix.com (Roy Smith)
Date: Wed, 25 May 2005 22:20:00 -0400
Subject: Checking for a full house
References: <1117071824.882035.250710@g49g2000cwa.googlegroups.com>
Message-ID: <roy-DA1955.22200025052005@reader1.panix.com>

"mwdsmith" <reallarryboy at yahoo.com> wrote:
> Hi, I'm new to python, and I'm not sure if this is the place to post
> this kind of question; so feel free to tell me if I should take this
> elsewhere.

Well, that depends.  Are we doing your homework assignment for you? :-)

> So, to start me off on python, I decided to put together a little
> script to test the probabilities of rolling certain combinations of
> dice.  Below is my code for checking for a full house (when rolling
> with 5 dice).  A roll is a list, eg [1, 3, 5, 1, 4] (this example is
> not a full house)
> 
> def removeAll(element, num2Rem, list):
>     l = list[:]
>     for num in range(0, num2Rem):
>         l.remove(element)
>     return l
> 
> def isfullHouse(roll):
>     for die in range(1,7):
>         if roll.count(die)==3:
>             l = removeAll(die, 3, roll)
>             if l[0]==l[1]:
>                 return 1
>     return 0
> 
> My questions is this: is there a better way to do this?  A way that's
> more natural to python, or just more efficient perhaps?

Well, I think I might do two trips through a dictionary.  Something like 
the following.  The arguments to the two dict() constructors are list 
comprehensions.  I don't normally use them a lot, and I don't normally like 
complicated expressions like this, but I tried a few ways, and this just 
seems to be the most compact way by far to do the counting.  So, even 
though I'm not convinced this is the clearest way to write it, you did ask 
for the most pythonic way, and I think this might be that :-)

#!/usr/bin/env python                                                                                      

def isFullHouse (roll):
    # count how many of each value you have, i.e. how many 1's,
    # how many 2's, etc
    valueDict = dict ([(x, 0) for x in range(1,7)])
    for die in roll:
        valueDict[die] += 1

    # count how many of each set size you have, i.e. how many
    # voids, how many singletons, how many pairs, etc.
    setDict = dict ([(x, 0) for x in range(0,6)])
    for setSize in valueDict.values():
        setDict[setSize] += 1

    # A full house is one pair and one three-of-a-kind
    return setDict[2] == 1 and setDict[3] == 1

print isFullHouse ([1, 1, 1, 2, 2]) == True
print isFullHouse ([1, 1, 1, 1, 1]) == False
print isFullHouse ([1, 2, 3, 4, 5]) == False
print isFullHouse ([3, 4, 3, 3, 4]) == True
print isFullHouse ([1, 2, 1, 1, 1]) == False


From ken.miller at entouch.net  Sun May 15 22:39:56 2005
From: ken.miller at entouch.net (Kenneth Miller)
Date: Sun, 15 May 2005 21:39:56 -0500
Subject: BLT with TCL/TK 8.4.9 and Python 2.4
Message-ID: <feKdnULfs4F2mhXfRVn-gQ@entouch.net>

Has anyone acheived this?

Regards,
Ken




From nothingcanfulfill at gmail.com  Wed May 11 01:43:09 2005
From: nothingcanfulfill at gmail.com (ncf)
Date: 10 May 2005 22:43:09 -0700
Subject: Python Args By Reference
In-Reply-To: <7xbr7igy12.fsf@ruckus.brouhaha.com>
References: <1115769308.136143.74080@f14g2000cwb.googlegroups.com>
	<1182j1daaepv6f4@corp.supernews.com>
	<1115787330.723188.295610@f14g2000cwb.googlegroups.com>
	<7xbr7igy12.fsf@ruckus.brouhaha.com>
Message-ID: <1115790189.005940.158030@f14g2000cwb.googlegroups.com>

As I fail to see how an array could be used in this (my own
stupidity?), would you have any such example? For reference, I'm trying
to translate this: http://www.cr0.net:8040/code/crypto/sha256/ (Inside
sha256_process).

Once again, thanks for the patience, I'm still picking up on all the
little tid-bits. :)

-Wes



From tjreedy at udel.edu  Thu May 12 13:28:08 2005
From: tjreedy at udel.edu (Terry Reedy)
Date: Thu, 12 May 2005 13:28:08 -0400
Subject: Python Documentation (should be better?)
References: <5C99C308457E6D4EA5448EA52A66004A675A6E@or.mxim.com><17026.26789.592527.975821@montanaro.dyndns.org><mailman.398.1115843305.29826.python-list@python.org><eL2dnQqPycfr7R_fRVn-1w@comcast.com><mailman.470.1115911344.29826.python-list@python.org><86sm0sig7k.fsf@guru.mired.org>
	<17027.34077.234131.161432@montanaro.dyndns.org>
Message-ID: <d6038k$1v1$1@sea.gmane.org>


"Skip Montanaro" <skip at pobox.com> wrote in message 
news:17027.34077.234131.161432 at montanaro.dyndns.org...
> Maybe the Module Index should be renamed "Module/Type Index" and 
> embellished
> with the builtin types, so that you'd find "float (builtin)", "string
> (builtin)", "dict (builtin)", etc. in the appropriate alphabetical
> positions.

+1

TJR





From john at castleamber.com  Fri May 13 04:34:51 2005
From: john at castleamber.com (John Bokma)
Date: 13 May 2005 08:34:51 GMT
Subject: New Python regex Doc
References: <1113301533.054410.203710@z14g2000cwz.googlegroups.com>
	<mailman.1813.1113355346.1799.python-list@python.org>
	<1113856843.023012.165500@l41g2000cwc.googlegroups.com>
	<1113908069.264676.207090@g14g2000cwa.googlegroups.com>
	<1115328523.852744.110390@f14g2000cwb.googlegroups.com>
	<1115423751.016177.250650@o13g2000cwo.googlegroups.com>
	<1115444726.627426.172260@g14g2000cwa.googlegroups.com>
	<1115508491.462229.294020@o13g2000cwo.googlegroups.com>
	<mailman.155.1115511845.29826.python-list@python.org>
	<1115972089.922875.108380@g14g2000cwa.googlegroups.com>
Message-ID: <Xns96552462DEE8Fcastleamber@130.133.1.4>

Xah Lee wrote:

> I respect people 

and I was convinced he was going to show different:

> The software community, is one fucked up ball, and in part, because

just one person sees the light...

> people respect not people nor truth. They respect their own asses,

Then you must be the #1 fine example of that same fucked up ball.

> raised. (of course there are also posts by good hearted and educated
> people)

Like yourself, sure.

If you had really any point, you didn't need to swear in every third 
sentence. Nor bother so many groups with your rants.

If you think it can be done better, pick up a part of documentation, and 
rewrite it. To make it very hard, you are not allowed to use fuck, fucking,  
fucked, ass, asses or other similar words, which in the way you use them 
show quite some lack of both creativity and writing skills.

-- 
John                   Small Perl scripts: http://johnbokma.com/perl/
               Perl programmer available:     http://castleamber.com/
            Happy Customers: http://castleamber.com/testimonials.html
                        


From darkbard at extending-php.net  Wed May  4 12:39:39 2005
From: darkbard at extending-php.net (Gabriele *Darkbard* Farina)
Date: Wed, 04 May 2005 16:39:39 GMT
Subject: zipimport
Message-ID: <fV6ee.1330776$35.49663947@news4.tin.it>

Hi,

I have a zip file structured like this:

mymodule.zip\
   module1.py
   submodule\
    submodule1.py

I tried to load submodule.submodule1 using this pice of code:

import zipimport

z = zipimport.zipimporter("mymodule.zip")
z.load_module("submodule.submodule1")

but it does not work (load_module raises an exception)

why?

tnx, bye


From kaerbuhez at yahoo.fr  Sat May 14 13:19:46 2005
From: kaerbuhez at yahoo.fr (kaerbuhez)
Date: Sat, 14 May 2005 19:19:46 +0200
Subject: Python Documentation (should be better?)
In-Reply-To: <428467b1$0$5860$626a14ce@news.free.fr>
References: <5C99C308457E6D4EA5448EA52A66004A675A6E@or.mxim.com>	<17026.26789.592527.975821@montanaro.dyndns.org>	<mailman.398.1115843305.29826.python-list@python.org>	<428276e8$0$318$626a14ce@news.free.fr>
	<mailman.411.1115854727.29826.python-list@python.org>
	<428467b1$0$5860$626a14ce@news.free.fr>
Message-ID: <42863334$0$8221$ba620e4c@news.skynet.be>

bruno modulix a ?crit :
<snip>
> 
> I fail to see why would it would be better to have to open a browser, go 
> to python.org, go to the doc, find the right link etc instead of just 
> typing dir(xxx) and/or help(xxx).
> 

I fully agree with you. I just suspect that you are not more than me a 
web developper. I suppose that for this kind of guys, using a browser 
connected to the web is the more natural way to go ... and PHP 
developers are those kind of guys. This is to say that comparing the doc 
of PHP to the one of Python is somewhat not more relevant that comparing 
PHP to Python as languages. Probably even less because:
- PHP developers are "naturally" presentation oriented.
- it's easier to give "good" exemples when everybody is working in about
the same area.

Python is a very flexible tool and that makes things sometimes more
difficult ... but worthy anyway.


From jello at comics.com  Sun May  1 07:17:51 2005
From: jello at comics.com (rzed)
Date: Sun, 01 May 2005 07:17:51 -0400
Subject: Setting the corner color in rotated PIL images
Message-ID: <Xns96494A613BC4Fjreeder@63.223.7.253>

I'm using PIL to generate some images which may be rotated at the 
user's option. When they are rotated, the original image is cropped 
in the new image (which is fine), and the corners are black (which 
is not, in this case). I can't find any documented way to change 
the default fill color (if that's what it is) for the corners, and 
PIL also doesn't seem to support a flood fill. I have created a 
flood fill in Python, which works but which markedly slows image 
generation. 

Can anyone suggest a better way to set the color of the corners? 

All I really need in this case is that they be a solid color, the 
same color they were before being rotated. 

-- 
rzed


From zulli at izh.ch  Thu May 26 02:11:18 2005
From: zulli at izh.ch (Raphael Zulliger)
Date: Thu, 26 May 2005 08:11:18 +0200
Subject: Running in Release or Debug version of the python interpreter?
In-Reply-To: <429346A8.2080102@python.net>
References: <d6v71s$9ds$1@news.hispeed.ch> <429346A8.2080102@python.net>
Message-ID: <d73per$o87$1@news.hispeed.ch>

Thanks for your answers!
I prefer the proposal of Thomas Heller by using a small helper function 
like this:

def IsDebugVersionRunning():
	import imp
	for suffix in imp.get_suffixes():
		if suffix[0] == '_d.pyd':
			return True
	return False

This works well for me. The
  _ctypes.__file__
trick didn't work for me - I guess I've done something wrong...

One more question: Under linux this doesn't seam to work - as there is 
always returned '.so' (not '_d.so') at least in my tests. Are there no 
debug/release version issues like on windows? doesn't import the 
python2.4-dbg (debian) binary different modules than python2.4?

Raphael Zulliger

Thomas Heller wrote:
> Raphael Zulliger schrieb:
> 
>> Hi
>>
>> I have to check wheter a .py script is run within the debug or the 
>> release version of an embedded python interpreter (in short, wheter 
>> python24_d.dll or python24.dll is in use).
>>
>> long version: I'm using ctypes to load my own dll. There exists 2 
>> version of this dll - a debug and a release version (where one is 
>> linked against debug C runtime dll and the other to release C runtime 
>> dll). Now
>> I have to change the name of the dll I want to be loaded by ctypes... 
>> But how can I find out which of the dll I have to load?!
>>
>> Thanks in advance!
>> Raphael Zulliger
> 
> 
> You could use imp.get_suffixes(). In a release build the returned list 
> will contain these entries
> ('.pyd', 'rb', 3), ('.dll', 'rb', 3)
> in a debug build that will be
> ('_d.pyd', 'rb', 3), ('_d.dll', 'rb', 3)
> 
> Another way would be to look at the filename of any binary extension 
> module.  _ctypes.__file__, for example:  '.....\\_ctypes.pyd' vs. 
> '....\\_ctypes_d.pyd'.
> 
> Thomas


From roy at panix.com  Fri May 20 16:50:39 2005
From: roy at panix.com (Roy Smith)
Date: 20 May 2005 16:50:39 -0400
Subject: appending key-value pairs to a dict
References: <d6lfsg$5t1$1@solaris.cc.vt.edu>
Message-ID: <d6liiv$31h$1@panix2.panix.com>

rbt  <rbt at athop1.ath.vt.edu> wrote:
>I know how to setup an empty list and loop thru something... appending 
>to the list on each loop... how does this work with dicts?
>
>I'm looping thru a list of files and I want to put the file's name and 
>its sha hash into a dict on each loop.

You just assign values to keys.  If the key doesn't exist, it's
created automagically.  You want something like this:

shaDict = {}
for fileName in fileNameList:
    hash = generateShaHash (fileName)
    shaDict[hash] = fileName


From s_david_rose at hotmail.com  Thu May 19 14:07:31 2005
From: s_david_rose at hotmail.com (GMane Python)
Date: Thu, 19 May 2005 14:07:31 -0400
Subject: Byte-operations.
References: <loom.20050519T040152-792@post.gmane.org>
	<20050519122728.GA18155@unpythonic.net>
Message-ID: <d6ikjg$5eu$1@sea.gmane.org>

For anyone who cares out there, I tried a slice with hex values:

IDLE 1.0.3
>>> a
=['1','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17
','18','19','20']
>>> print a[3:4]
['4']
>>> print a[0xa:0xc]
['11', '12']
>>> print a[0xa:0xa+5]
['11', '12', '13', '14', '15']

-Dave

"Jeff Epler" <jepler at unpythonic.net> wrote in message
news:20050519122728.GA18155 at unpythonic.net...

>In Python, "chr" gives a 1-byte string from a small integer, "ord" does
>the reverse.  Strings are concatenated with "+" and substrings are taken
>with the slice operator, s[pos1:pos2].

>I'm not a visual basic expert, but it looks like these are the
>operations the code below performs.

>Jeff

> -- 
> http://mail.python.org/mailman/listinfo/python-list





From anthony.briggs at gmail.com  Tue May 24 06:23:45 2005
From: anthony.briggs at gmail.com (Anthony)
Date: Tue, 24 May 2005 20:23:45 +1000
Subject: Melbourne (Australia) Python User Group
Message-ID: <5327162005052403233f44fc03@mail.gmail.com>

Hi all,

I'm interested in starting a Python user group in Melbourne,
Australia. So far there seems to have been a lot of interest from
various parties, but for whatever reasons it's fizzled out. So I've
decided that if there's going to be a user group, I'll have to start
it myself (hopefully without the meetup.com albatross).

If you're in Melbourne, you're a python programmer and you're
interested in meeting up, drop me an email and let me know. I'll
probably also contact the Linux user groups in the area, but if you
know of any other groups that would be interested, please let me know.
If you want to forward this email on to other people or groups, feel
free to do so.

Thanks,

Anthony

-- 
-----------------------------------------------------
 HyPEraCtiVE? HeY, WhO aRE YoU cALliNg HypERaCtIve?!
 aNthONy.BrIGgS at gmAiL.CoM
-----------------------------------------------------


From steven.bethard at gmail.com  Wed May 11 18:29:45 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Wed, 11 May 2005 16:29:45 -0600
Subject: Python Documentation (should be better?)
In-Reply-To: <428276e8$0$318$626a14ce@news.free.fr>
References: <5C99C308457E6D4EA5448EA52A66004A675A6E@or.mxim.com>	<17026.26789.592527.975821@montanaro.dyndns.org>
	<mailman.398.1115843305.29826.python-list@python.org>
	<428276e8$0$318$626a14ce@news.free.fr>
Message-ID: <LvqdnThYCOnEGh_fRVn-pQ@comcast.com>

Bruno Desthuilliers wrote:
> Ivan Van Laningham a ?crit :
> 
>> Hi All--
>> The Python docs are not ideal.  I can never remember, for instance,
>> where to find string methods (not methods in the string module, but
>> methods with ''),
> 
> 
>  >>> dir('')
> ['__add__', '__class__', '__contains__', '__delattr__', '__doc__', 
> '__eq__', '__ge__', '__getattribute__', '__getitem__', '__getnewargs__', 
> '__getslice__', '__gt__', '__hash__', '__init__', '__le__', '__len__', 
> '__lt__', '__mod__', '__mul__', '__ne__', '__new__', '__reduce__', 
> '__reduce_ex__', '__repr__', '__rmod__', '__rmul__', '__setattr__', 
> '__str__', 'capitalize', 'center', 'count', 'decode', 'encode', 
> 'endswith', 'expandtabs', 'find', 'index', 'isalnum', 'isalpha', 
> 'isdigit', 'islower', 'isspace', 'istitle', 'isupper', 'join', 'ljust', 
> 'lower', 'lstrip', 'replace', 'rfind', 'rindex', 'rjust', 'rstrip', 
> 'split', 'splitlines', 'startswith', 'strip', 'swapcase', 'title', 
> 'translate', 'upper', 'zfill']

Probably more useful:

py> help(str)
Help on class str in module __builtin__:

class str(basestring)
  |  str(object) -> string
  |
  |  Return a nice string representation of the object.
  |  If the argument is a string, the return value is the same object.
  |
...
  |
  |  capitalize(...)
  |      S.capitalize() -> string
  |
  |      Return a copy of the string S with only its first character
  |      capitalized.
  |
  |  center(...)
  |      S.center(width[, fillchar]) -> string
  |
  |      Return S centered in a string of length width. Padding is
  |      done using the specified fill character (default is a space)
  |
...
  |
  |  upper(...)
  |      S.upper() -> string
  |
  |      Return a copy of the string S converted to uppercase.
  |
  |  zfill(...)
  |      S.zfill(width) -> string
  |
  |      Pad a numeric string S with zeros on the left, to fill a field
  |      of the specified width.  The string S is never truncated.
...


STeVe


From ruach at chpc.utah.edu  Wed May  4 16:36:43 2005
From: ruach at chpc.utah.edu (Matthew Thorley)
Date: Wed, 04 May 2005 14:36:43 -0600
Subject: How do you convert a string obj to a file obj?
In-Reply-To: <d5b98a$vlo$01$1@news.t-online.com>
References: <d5at2j$7uv$1@vegh.ks.cc.utah.edu>
	<42790d0c$0$79465$14726298@news.sunsite.dk>
	<d5b79u$agp$1@vegh.ks.cc.utah.edu>
	<d5b98a$vlo$01$1@news.t-online.com>
Message-ID: <d5bbou$b7d$1@vegh.ks.cc.utah.edu>

Peter Otten wrote:
> Matthew Thorley wrote:
> 
> 
>>Esben Pedersen wrote:
>>
>>>Matthew Thorley wrote:
>>>
>>>
>>>>I'm writing a web app whereby a user uploads a tar acrhive which is then
>>>>opened and processed. My web form reads the file like this:
>>>>
>>>>while 1:
>>>>    data = value.file.read(1024 * 8) # Read blocks of 8KB at a time
>>>>    if not data: break
>>>>
>>>>which leaves me with data as a string obj. The problem that I have is
>>>>that the function that processes the archive expects a file object. So
>>>>far the only solution I have found it to write the file to disk and then
>>>>read it back.
>>>>
>>>>Is there an easy way to convert data, in the example above into a file
>>>>object?
>>>>
>>>>Thanks
>>>>-Matthew
>>>
>>>
>>>value.file is a file object. Why don't you give that as an argument?
>>>
>>>/Esben
>>
>>Ok I tried that but I still get this error. Any clue what I need to do?
>>
>>AttributeError: 'file' object has no attribute 'rfind'
> 
> 
> str has an rfind() method while file has not:
> 
> 
>>>>file.rfind
> 
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
> AttributeError: type object 'file' has no attribute 'rfind'
> 
>>>>str.rfind
> 
> <method 'rfind' of 'str' objects>
> 
> So "the function" seems to expect a string rather than a file. Or perhaps
> there's an (evil) isinstance(param, file) check somewhere that triggers
> param to be treated as a filename. Absent further information, only you can
> find out. 
> 
> Peter

Ok you're right. tarfile.open expects a string; the path to the file
open. I thought that I had tried it with open file objects but I guess I
was mistaken.

Thanks all for the help
-Matthew


From gsakkis at rutgers.edu  Thu May 19 00:28:26 2005
From: gsakkis at rutgers.edu (George Sakkis)
Date: 18 May 2005 21:28:26 -0700
Subject: Is Python suitable for a huge, enterprise size app?
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>
	<jmbsl2-opn.ln1@lairds.us>
	<1116442276.918194.194110@g44g2000cwa.googlegroups.com>
	<mailman.163.1116443300.8733.python-list@python.org>
	<1116450537.626601.251990@g49g2000cwa.googlegroups.com>
	<1116454971.543476.28000@g14g2000cwa.googlegroups.com>
Message-ID: <1116476906.488073.152660@f14g2000cwb.googlegroups.com>

"Kay Schluehr" wrote:

> > Think about it: if the
> > project fails (and that's quite likely for huge projects, not dark
> > humour) and you've done it in python, everyone will blame python
and
> > you who chose it; java OTOH belongs in the realm of "standard
> business
> > practices", so in a way "it's ok" to screw up, you did what
everybody
> > else does. Yet another failed java enterprise project, nothing to
see
> > here.
>
> Hi George, You probably know the tale about Achilles and the turtle?
> Where do You think Achilles would be located in the race against the
> turtle if Zeno would have convinced him that motion is impossible? I
> always thought that we Germans were hopeless pessimists ;)

Yeah, I know the tale; the difference is that the convincing arguments
there were a fallacy, while Pointy-Haired-Bosses are for real ;-) So
instead of calling this pessimism, I would put it somewhere between
cynicism and realism :-)

> It's a very funny logical loop inside this kind of arguments: don't
use
> great Python for grand multimillion $ projects because if You fail
> everyone trashes cute Python and claims that it is not reliable for
> grand projects and therefore will not be used for those.

I see what you're saying; however there's an 'else' branch in the
argument. That is, *if* such a grand project succeeds (possibly at a
much lower budget than predicted), it will similarly be a big boost for
marketing python. It's a high-risk / high-payoff bet. The reason I
would be cynic or pessimist (call it what you will) in this case is
mainly the inexperience implied in the OP's post ("I have been looking
and reading a lot about Python recently"). Now, if a decent percentage
of the multimillion $ bill would be invested in hiring 10 PSF members
with Alex Martelli for project lead, I would certainly reconsider my
statement about going with java <wink>.

George



From dotpyFE at gmail.com  Wed May 18 08:21:32 2005
From: dotpyFE at gmail.com (Lucas Raab)
Date: Wed, 18 May 2005 12:21:32 GMT
Subject: SSL (HTTPS) with 2.4
In-Reply-To: <1116406256.213128.68180@f14g2000cwb.googlegroups.com>
References: <1116392416.139727.84630@g49g2000cwa.googlegroups.com>
	<428AD4D1.8030405@v.loewis.de>
	<1116396878.995648.206820@g49g2000cwa.googlegroups.com>
	<1116406256.213128.68180@f14g2000cwb.googlegroups.com>
Message-ID: <grGie.3984$uR4.2802@newsread2.news.atl.earthlink.net>

Bloke wrote:
> I just removed my installation of Python 2.4.1, which was the one on
> the python.org web site.  I installed the Activepython 2.4.1 and now I
> get the following error with the same code above:
> 
>  File "C:\Python24\lib\urllib2.py", line 1053, in unknown_open
>     raise URLError('unknown url type: %s' % type)
> URLError: <urlopen error unknown url type: https>
> 
> I'm getting a bit frustrated.  Do I need to import another library?
> Any advise is appreciated.
> 
> Bloke.
> 

I think it's saying it doesn't understand the HTTPS protocol based on the

	raise URL error('unknown url type: %' % type)
URLError: <urlopen error unknown url type: https>

-- 
--------------------------
Lucas Raab
lvraab"@"earthlink.net
dotpyFE"@"gmail.com
AIM:	Phoenix11890
MSN:	dotpyfe "@" gmail.com
IRC:	lvraab
ICQ:	324767918
Yahoo:	Phoenix11890


From sakesun at boonthavorn.com  Sat May 21 06:48:49 2005
From: sakesun at boonthavorn.com (Sakesun Roykiattisak)
Date: Sat, 21 May 2005 17:48:49 +0700
Subject: SQL Query via python
In-Reply-To: <200505211056.36718.modelnine@ceosg.de>
References: <200505202357.01579.jeffelkins@earthlink.net>	<428EBEEF.4040500@boonthavorn.com>
	<200505211056.36718.modelnine@ceosg.de>
Message-ID: <428F1211.4000404@boonthavorn.com>


>*argh* You don't do any quoting of SQL-parameters, and that's more than bad! 
>(leaves you up to the mercy of SQL-injection attacks, for example)
>
>  
>

I'm aware of the issue. But I think the one who start this question is 
too naive to explain anything more complex.
Just give him a hint for further investigate.



From michele.simionato at gmail.com  Thu May 19 06:51:45 2005
From: michele.simionato at gmail.com (Michele Simionato)
Date: 19 May 2005 03:51:45 -0700
Subject: self-promotion of the decorator module
In-Reply-To: <Xns965B6367B75F0duncanbooth@127.0.0.1>
References: <1116484694.122678.11980@f14g2000cwb.googlegroups.com>
	<Xns965B6367B75F0duncanbooth@127.0.0.1>
Message-ID: <1116499905.547537.209500@g49g2000cwa.googlegroups.com>

Duncan Booth:
> Fortunately you have a list of
> argument names readily available so it shouldn't be too
> hard to generate unique names to use in their place.

It does not look too simple either. Whereas I can easily
build valid Python identifiers which are extremely unlikely
to clash with any identifier I can have in my program, it
seems impossible to get an identifier which cannot be
shadowed later . What about renaming
name-> _name_, call -> _call_, func-> _func_, defarg->_defarg_ and
checking that the argument list
does not contain such reserved names by means of an assert statement?

                 Michele Simionato



From s_david_rose at hotmail.com  Tue May 31 13:36:05 2005
From: s_david_rose at hotmail.com (GMane Python)
Date: Tue, 31 May 2005 13:36:05 -0400
Subject: Seti-like program
References: <mailman.292.1117548741.18027.python-list@python.org>
	<1117557425.074745.271600@g49g2000cwa.googlegroups.com>
Message-ID: <d7i75m$ubj$1@sea.gmane.org>

I want to have a program download pictures from a netCam (Axis 2100).  So, I
want to start & stop, and also see progress (how many photos, are there
errors, did I begin encoding to DivX, etc) for multiple cameras.

-Dave
<dberlin at gmail.com> wrote in message
news:1117557425.074745.271600 at g49g2000cwa.googlegroups.com...
> Other examples- PCAnyWhere, a Trojan Horse .. :)
>
> Anyway, this is quite simple.
> All you realy need is a server with a GUI that listens all the time for
> incoming connections,
> and a client that will connect to the server and work in the
> background.
>
> Here are some thoughts...
>
>     - Figure out what action you want the client to do. Make sure you
> have a working script that does that already, that could later be
> connected to the actual client.
>     - How much control do you need over the client? do you want to just
> send commands and see the result? or do you want to recieve
> screenshots, or even "live" view of the client?
>
> -- 
> http://mail.python.org/mailman/listinfo/python-list
>





From jrastrick at student.usyd.edu.au  Sun May 15 07:47:52 2005
From: jrastrick at student.usyd.edu.au (Jordan Rastrick)
Date: 15 May 2005 04:47:52 -0700
Subject: Is isinstance always "considered harmful"?
Message-ID: <1116157672.683839.49700@o13g2000cwo.googlegroups.com>

Hi everyone,

Just a little issue that I've come across in Python where I'd be
interested to read the thoughts and opinions of the great thinkers and
programmers who frequent this newsgroup.

I've read arguments, here and elsewhere, to the effect that in Python
isinstance should be avoided like the plague, except in a few very
specific and narrow circumstances. Roughly speaking, due in part to
Python's dynamic nature its better to concern yourself only with the
interface an object provides, and not whether it happens to inherit
from a given base class.

The problem is, sometimes theres more thats important to what a method
does than just correct behaviour.

Specifically, consider the case of Linked Lists vs the array based
random access model Python uses for its lists. Given the ease of using
Python's inbuilt list type, I'm not sure if theres much call for Linked
Lists in the language - I don't even know if they are used anywhere in
the standard library (I had assumed the deque class was implemented
with a linked list, but a friend of mine pointed out circular arrays
are an equally likely possibility, and I even saw an elegant cookbook
recipe the other day that uses a Dictionary.)

Well, whats the difference between the two data structures? If you
consider only the interface, nothing - they provide exactly the same
service, sequential storage and access to data elements. However, any
programmer who passed Data Structures and Algorithms 101 knows theres a
critical difference between the performance of the various operations a
programmer might want to carry out, and   you should choose one over
the other based on which operations you expect to be most common in
whatever problem youre solving.

Hiding the implementation is a great principle, but this is a case
where the underlying implementation really matters. The difference
between an 0(1) and 0(n) algorithm is not a matter of 'fine tuning' or
an issue of 'premature optimization'; its a critical design parameter.

So to get back to the original point of the post ;) Say you're writing,
in Python, the extend() method for a Linked List version of python's
builtin list. Its really important to know what kind of iterable youre
being passed in - because if its another Linked list, and you know it,
you can connect the two in 0(1) time; whereas any other arbitrary
iterable is going to take 0(n), as you're just going to have to append
the items one by one. Is this a case where use of isinstance, to see
exactly what kind of Iterable you have, can be justified?

def extend(self, elems):
   if isinstance(elems, LinkedList):
      # Point last to first
   else:
      for elem in elems: self.append(elem)

>From memory this is the way its done in Java's collection API, or at
least it was the last time I looked at the source.

There are other solutions I can think of - perhaps the least hideous is
factoring out the 0(1), "point last to first" code in a seperated
method, __linkedExtend() or something, and then do something similar to
the above by using an exception, like this:

def extend(self, elems):
   try:
      self.__linkedExtend(elems)
   catch NotALinkedListError:
      for elem in elems: self.append(elem)

I dont know, I don't really like this (although it is more BAFP than
the first version, so maybe that makes it more Pythonic?). To me,
instanceof seems like the infimum of all possible evils in this case.

It'd be nice if I'd seen the source code for Python's builtin list to
see if any of these kind of considerations are taken into account there
(ultra fast array copying in C when extend is called on another list,
perhaps)? Luckily, one of the great gifts of Python is I can indeed
look at the source for the entire langauge at any time I want. So I'm
going to go read it (my first time, how exciting!), and in the
meantime, I'll let replies start accumulating froma  whole lot of
people who are a lot smarter and more experience in Python than myself
:)

Several-weeks-in-and-still-liking-Python-better-than-any-other-previously-learned-language-ly
yours,
Jordan Rastrick



From ivoras at _-_fer.hr  Sun May 15 18:45:48 2005
From: ivoras at _-_fer.hr (Ivan Voras)
Date: Mon, 16 May 2005 00:45:48 +0200
Subject: Resizing VListBox on parent (wxPython)
Message-ID: <d68n5m$hqk$1@bagan.srce.hr>

I hava a hierarhical sizer layout in which there's a panel in the upper 
part of a window with some buttons, and another panel with wxVListBox 
that's meant to occupy all the remaining space in the window. Both 
panels are put inside a vertical BoxSizer, and the VListBox in its panel 
is also in BoxSizer.

The hierarchy is like this:

- window, vertical BoxSizer
   - panel, horizontal BoxSizer
     - some buttons
   - panel, vertical BoxSizer
     - a single VListBox

(the VListBox is alone in its panel for "future compatibility" - I plan 
to add more controls to the panel)

I want the lower panel and the VListBox to automatically resize and fill 
all the remaining space in the window. I can get this to work in the 
horizontal direction by default, but not in vertical. When I set the 
vertical size of VListBox to -1, it only displays one line; I can set it 
to a fixed vertical size, but I really need it to adapt its size to that 
of the window (something like "Center" layout option in Java BorderLayout).

(The items in VListBox are generated at program runtime, and are not 
available during window controls creation stage)

Can somebody explain why is this happening and how to do what I want? I 
have almost no experience in wxWindows.


From sjmachin at lexicon.net  Thu May  5 05:10:25 2005
From: sjmachin at lexicon.net (John Machin)
Date: 5 May 2005 02:10:25 -0700
Subject: Adding new methods to new-style classes dynamically
In-Reply-To: <1115282109.707219.163660@f14g2000cwb.googlegroups.com>
References: <1115282109.707219.163660@f14g2000cwb.googlegroups.com>
Message-ID: <1115284225.644287.140090@o13g2000cwo.googlegroups.com>

Max Derkachev wrote:
[snip]
> #well, try this with the new-style class
> class A(object):
>     pass
>
> # the new-style __dict__ is a dictproxy object
> A.__dict__[meth_name] = lambda self: type(self)
> >>Traceback (most recent call last):
> >>  File "<interactive input>", line 1, in ?
> >>TypeError: object does not support item assignment
>
>
> Of course, I can do
> A.foo = some_executable_object
> But that does help when a dynamic method name is needed.
> Another option is:
> exec('A.%s = %s'%('foo', 'some_executable_option'))
> But I don't like eval'ling things :)
>
> Is there other way to add/change methods to new-style classes
> dynamically?

Ever considered setattr()? Not only does it appear to do the job but
also it avoids those __make__your__eyes__bleed__ double underscores.

>>> class A(object):
...    pass
...
>>> A.__dict__['foo'] = 123
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
TypeError: object does not support item assignment
>>> setattr(A, 'foo', 123)
>>> A.foo
123
>>>>>> def bar(self):
...    print 'bar bar blog ship'
...
>>> setattr(A, 'bar', bar)
>>> eh = A()
>>> eh.bar()
bar bar blog ship
>>>

HTH,
John



From tiissa at nonfree.fr  Sat May 14 08:42:17 2005
From: tiissa at nonfree.fr (tiissa)
Date: Sat, 14 May 2005 14:42:17 +0200
Subject: function with variable arguments
In-Reply-To: <1116067288.070061.286480@g43g2000cwa.googlegroups.com>
References: <1115977954.266898.141150@g49g2000cwa.googlegroups.com>
	<pan.2005.05.13.12.10.09.18787@internode.on.net>
	<1116067288.070061.286480@g43g2000cwa.googlegroups.com>
Message-ID: <4285f227$0$23767$626a14ce@news.free.fr>

Xah Lee wrote:
> on a related topic,
> I think it would be a improvement for the built-in range() so that step
> needs not be an integer.

There are easy workarounds but I'd find it useful as well.

> Further, it'd be better to support decreasing range. e.g.
> 
> Range( 5, 7, 0.3); # returns [5, 5.3, 5.6, 5.9, 6.2, 6.5, 6.8]
> Range( 5, -4, -2); # returns [5,3,1,-1,-3]

The last one already works:
  >>> range(5,-4,-2)
  [5, 3, 1, -1, -3]


From f.geiger at vol.at  Sun May 29 11:13:18 2005
From: f.geiger at vol.at (F. GEIGER)
Date: Sun, 29 May 2005 17:13:18 +0200
Subject: 2D vector graphics Problem
References: <4299c4de$0$17099$5fc30a8@news.tiscali.it>
Message-ID: <d7cm63$tc9$1@news.hispeed.ch>

>  xRel, yRel = self.relPoint # The rotation should be relative to this

Shouldn't it be

x -= xRel
y -= yRel
xR = x * cos(phi) - y * sin(phi)
yR = x * sin(phi) + y * cos(phi)

then?

Regards
Franz GEIGER


"Karl Max" <karlmax at tiscalinet.it> schrieb im Newsbeitrag
news:4299c4de$0$17099$5fc30a8 at news.tiscali.it...
> Hi all,
>
> I'm new here. Name's Max from tuscany, and I don't speak english very well
> :-) I am not veteran at coding, I am most like an "artisan coder" since
> commodore 64 times.
>
> Now the problem:
> I would like to have a little 2d engine to calculate and trace segments
and
> poly's and their collisions, rotations and trasformations. I didn't
> understand too much in tutorials (you're all high school coders, well
> informed in maths and programming theory!!! :-))) so I took my old school
> books on Cartesian space and had a refresh. Proceeding in this not too
> optimized way of coding my needs, I took down some generic classes to
> describe primitive objects in space (vertexes, segments, poly's etc...).
>
> Now I try to make a point rotate around another point.
> Here's my piece of code:
>
> def rotate(self, w):
>  # This method belongs to the class Vertex
>  # w = angle expressed in radiants
>  x, y = self.coords
>  xRel, yRel = self.relPoint # The rotation should be relative to this
>  sin, cos = math.sin(w), math.cos(w)
>  x = x * cos - y * sin - xRel * cos + yRel * sin + xRel
>  y = x * sin + y * cos - xRel * sin - yRel * cos + yRel
>  self.coords = (x,y)
>
> I know the style isn't professional, and if you should have some piece of
> advice, you're welcome... but that's not the question.
> When I render it graphically, using pygame 1.6, the point tends to fall
> towards the center of rotation round after round. I mean if I have a loop
> rotating the point by a fixed angle, the point is like "attracted" by the
> center every round it does, like in a vortex.
> I think it depends from float representation inside python, but I have no
> clear idea about how to resolve it. Maybe should I use Decimal module? Or
is
> there any trick on this subject (2D vector graphics?) that I can't even
> imagine?
> Thanks you all,
>  Max
>
>




From duncan.booth at invalid.invalid  Mon May 16 06:12:59 2005
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 16 May 2005 10:12:59 GMT
Subject: Detect console close
References: <mailman.36.1116233920.8733.python-list@python.org>
	<E7mdneRHfOXa-RXfRVn-pg@powergate.ca>
Message-ID: <Xns9658721904DA5duncanbooth@127.0.0.1>

Peter Hansen wrote:

> new pip wrote:
>> Actually I want to do some clean up (or operation) before the program
>> actually exits. Is there any way to do that?
> 
> Ah, that's easier. :-)
> 
> It might help (if this answer isn't sufficient) to post a snippet of 
> code showing a very small example that we could talk about.  You might 
> have a "special" situation, something unusual you aren't telling us 
> about yet.  (Also, mentioning your platform and versions is always a 
> good idea, but maybe not relevant in this case.)
> 
> There are a few options:
> 
> 1. "import atexit" and use that standard library module's features.
> 
> 2. put a "try/finally" block around the bulk of your code, with cleanup 
> code in the "finally" clause
> 
> 3. Just stick the cleanup code at the end of your module...  (this one 
> is too obvious, so if neither of the above answers work for you, and 
> this one is insufficient, please post example code so we know where you 
> are...)
> 

None of these work when a console running a Python script is simply closed. 
If you do that then the Python script will be terminated without running 
any cleanup code. On windows the same thing also happens if you use Ctrl-
Break to terminate the script, again it will exit without doing any 
cleanup.

You can arrange to catch when the console window is closed, but there are 
numerous things you have to watch out for if you do. The simplest thing is 
to do:

import signal
signal.signal(signal.SIGBREAK, signal.default_int_handler)

This will make the window close or ctrl-break raise a KeyboardInterrupt 
exception instead of terminating the program. You can handle this as for 
any other exception, but if you don't exit the program pretty quickly the 
user will see a popup box offering to use 'end task' to terminate your 
program with extreme prejudice.

Alternatively you can set a specific signal handler for SIGBREAK. The 
SIGBREAK handler will always be triggered on the program's main thread.

If your script is blocked for some reason (e.g. in raw_input or reading 
from a network socket) then the exception won't be raised until the 
blocking call returns, by which time the user may have already decided to 
terminate your unresponsive program. The only way I know to avoid this is 
to ensure that the signal gets raised on a different thread than the one 
which blocks. Since the signal always gets raised on the program's primary 
thread, this means you have to ensure that all keyboard input or network 
traffic happens on a secondary thread and you will have to take special 
care over cleanup code which uses any objects that thread might also be 
using.


From Scott.Daniels at Acm.Org  Mon May 23 11:04:14 2005
From: Scott.Daniels at Acm.Org (Scott David Daniels)
Date: Mon, 23 May 2005 08:04:14 -0700
Subject: python24.zip
In-Reply-To: <4290dc79$0$9989$9b622d9e@news.freenet.de>
References: <mailman.249.1116595092.8733.python-list@python.org>
	<428e0cc3$0$29954$9b622d9e@news.freenet.de>
	<x7hdgw2zqi.fsf@handshake.de>
	<428faddd$0$26322$9b622d9e@news.freenet.de>
	<x7vf5bku5d.fsf@handshake.de>
	<4290dc79$0$9989$9b622d9e@news.freenet.de>
Message-ID: <4291ea5b$1@nntp0.pdx.net>

Martin v. L?wis wrote:
> Dieter Maurer wrote:
> 
>>Really?
>>
>>Is the interpreter unable to call "C" functions ("stat" for example)
>>to determine whether an object exists before it puts it on "path".
> 
> What do you mean, "unable to"? It just doesn't.
In fact, the interpreter doesn't necessarily know when it is
affecting the path.

> Could it? Perhaps, if somebody wrote a patch.
> Would the patch be accepted? Perhaps, if it didn't break something
> else.
> 
> In the past, there was a silent guarantee that you could add
> items to sys.path, and only later create the directories behind
> these items. I don't know whether people rely on this guarantee.

If you only checked "lost" files/directories on the path a few
seconds later than the last time you checked, you might be able
to drive this "failed open" time down drastically without seriously
affecting those who care.  Such an implementation should have a
call which allowed you to "clear" the timestamps for the "known bad"
entries.

--Scott David Daniels
Scott.Daniels at Acm.Org


From john at hazen.net  Mon May  2 09:13:39 2005
From: john at hazen.net (John Hazen)
Date: Mon, 2 May 2005 06:13:39 -0700
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <1115036638.557573.153250@z14g2000cwz.googlegroups.com>
References: <d4u60o$akh$1@news2.netvision.net.il>
	<1114828856.889984.171750@g14g2000cwa.googlegroups.com>
	<1115036638.557573.153250@z14g2000cwz.googlegroups.com>
Message-ID: <20050502131339.GJ7085@gate2.hazen.net>

* mstarzyk at gmail.com <mstarzyk at gmail.com> [2005-05-02 05:10]:
> Any hints on level 6 ?
> There is "zip" in the page source, "ZIp" in the
> image data, but have no clue what to do with them
> - tried many things :). 

Have you found the zip file yet?

(I did, and I still can't figure it out.  I'm wondering if there are
comments embedded in the jpg that none of my viewers will show me.
Hmm, maybe there's a python module that does that...  I'll play with it
more after I sleep on it.)

-John


From prabapython at yahoo.co.in  Thu May 12 06:32:02 2005
From: prabapython at yahoo.co.in (praba kar)
Date: Thu, 12 May 2005 11:32:02 +0100 (BST)
Subject: reg mail sending without smtp module
In-Reply-To: 6667
Message-ID: <20050512103202.68814.qmail@web8410.mail.in.yahoo.com>

Dear All,

       From this below answer I got clear
idea for mail sending Module. I am expecting
this kind of answer .   Thank you
for your immediate response.

--- Mike Meyer <mwm at mired.org> wrote:
> praba kar <prabapython at yahoo.co.in> writes:
> > In Php we can build a Mail Message by
> > Mail_mime class and send this message by
> > Mail::Factory's class send Method. Here Php
> > doesn't use any smtp modules. Like that
> > In Python I used email.Message class to
> > build Mail Message and Now I am searching
> > modules to send this message as mail.
> 
> Python isn't PHP. In python, the standard way to
> send a message is
> with the smtp module. If you do an "import this" in
> a python
> interpreter, it will tell you (among other things)
> "There should be
> one-- and preferably only one --obvious way to do
> it." The smtp module
> is that way. Since smtp is also how mail is sent
> around the internet,
> this makes a lot of sense.
> 
> Now, the PHP mail command uses the system's sendmail
> binary (at least
> on Unix). You can do that by hand using the
> subprocess module in 2.4,
> or os.system or os.popen or something similar on
> earlier versions of
> Python. All this really does is asks sendmail to put
> a message in the
> queue from the command line, rather than via the
> smtp port. It's
> probably slower than talking to the already running
> smtp daemon.
> 
> On Windows, the PHP mail command connects to an smtp
> server - which is
> exactly what smtplib does.
> 
>         <mike
> -- 
> Mike Meyer <mwm at mired.org>		
> http://www.mired.org/home/mwm/
> Independent WWW/Perforce/FreeBSD/Unix consultant,
> email for more information.
> -- 
> http://mail.python.org/mailman/listinfo/python-list
> 

________________________________________________________________________
Yahoo! India Matrimony: Find your life partner online
Go to: http://yahoo.shaadi.com/india-matrimony


From fredrik at pythonware.com  Wed May 25 10:07:02 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Wed, 25 May 2005 16:07:02 +0200
Subject: Parsing XML - Newbie help
References: <1116701614.858127.105550@g47g2000cwa.googlegroups.com><mailman.5.1116782579.21604.python-list@python.org>
	<1116804848.061094.209740@g43g2000cwa.googlegroups.com>
Message-ID: <d720mo$soe$1@sea.gmane.org>

"rh0dium" wrote:

> Ok so up to here I am ok.  I find ( If you want the full xml let me
> know) two blocks of system memory.  It MUST be "System Memory" only.
> Now how do I get a list of all of the children "nodes" of this.  They
> are named bank:N  ( i.e bank:0, bank:1 etc [see below] ).  For each one
> of those there may ( or may not ) have some memory stuck in it.  I can
> tell if there is memory because a size is given.  I want to a list of
> all of the sizes.  From there I can say you have sum(memory) in
> len(memory) banks of total banks.

once you've found a memory node, you should be able to simply loop
over all node children, optionally filter on the id attribute, and look for
size elements.

        sizes = []

        for elem in tree.findall(".//node"):
            if elem.get("class") == "memory":
                if elem.findtext("description") == "System Memory":
                    print "Found system memory bank"
                    # loop over subnodes
                    for node in elem:
                        size = node.findtext("size")
                        if size:
                            sizes.append(int(size))

        print len(sizes), sum(sizes)

note that this assumes that the size is always in bytes.  if not,
you have to check the units attribute; e.g.

                    size_elem = node.find("size")
                    if size_elem is not None:
                        unit = size_elem.get("units", "bytes")
                        size = int(size_elem.text)
                        ...

</F>





From bruce+usenet at cenderis.demon.co.uk  Mon May  2 08:51:41 2005
From: bruce+usenet at cenderis.demon.co.uk (Bruce Stephens)
Date: Mon, 02 May 2005 13:51:41 +0100
Subject: BitKeeper for Python?
References: <IOade.1185051$Xk.343206@pd7tw3no>
	<slrnd7bsn8.pa3.nick@irishsea.home.craig-wood.com>
Message-ID: <87ll6xaizm.fsf@cenderis.demon.co.uk>

Nick Craig-Wood <nick at craig-wood.com> writes:

[...]

> You could try Mercurial
>
>   http://www.selenic.com/mercurial/

Or Codeville, also written in Python.

> which aims at being a true bk replacement.  Its also written in
> python.  Its being developed at the moment...

Codeville's said to be pretty usable.


From __peter__ at web.de  Tue May  3 09:44:30 2005
From: __peter__ at web.de (Peter Otten)
Date: Tue, 03 May 2005 15:44:30 +0200
Subject: sorting list and then return the index of the sorted item
References: <1115127433.984686.99060@f14g2000cwb.googlegroups.com>
Message-ID: <d57v6p$kge$02$1@news.t-online.com>

custard_pie wrote:

> I need help sorting a list...I just can't figure out how to sort a list
> and then return a list with the index of the sorted items in the list
> for example if the list I want to sort is [2,3,1,4,5]
> I need [2,0,1,3,4] to be returned

http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/306862


From codecraig at gmail.com  Tue May  3 15:23:07 2005
From: codecraig at gmail.com (codecraig)
Date: 3 May 2005 12:23:07 -0700
Subject: Read / Write image file
In-Reply-To: <20050503184427.1D99.0.NOFFLE@fiedzia.homeip.net>
References: <1115143942.944188.158270@g14g2000cwa.googlegroups.com>
	<20050503184427.1D99.0.NOFFLE@fiedzia.homeip.net>
Message-ID: <1115148187.689371.187620@f14g2000cwb.googlegroups.com>

well on the server, if I have,

x = sock.recv(1024) ....and the client sends more than 1024 bytes...the
server won't receive it all right?  So I am wondering, how do I setup
the server to handle some unknown amount of data?

Note, in previous post it should have been, x = sock.recv(1024) not x =
server.recv(1024)

thanks



From Alexander_Zatvornitskiy at p131.f3.n5025.z2.fidonet.org  Sun May 22 18:04:48 2005
From: Alexander_Zatvornitskiy at p131.f3.n5025.z2.fidonet.org (Alexander)
Date: Mon, 23 May 2005 02:04:48 +0400
Subject: trouble with copy/deepcopy
References: <86acmt8reh.fsf@guru.mired.org>
Message-ID: <MSGID_2=3A5025=2F3.131_42913bc5@fidonet.org>

?????? Mike!

17 ??? 2005 ? 16:38, Mike Meyer ? ????? ?????? ? Alexander Zatvornitskiy ?????:
 MM> Actually, it is shared - but only for reference. If you assign to it,
 MM> you'll create an instance variable of the same name. As Peter
 MM> explained, if you remove the instance variable, the class variable
 MM> becomes visible again. Try this:
 py>> class C:
 MM> ...   q = []
 MM> ...
 py>> c1 = C()
 py>> c2 = C()
 py>> c3 = C()
 py>> c1.q.append(1)
 py>> c2.q.append(2)
 py>> c3.q.append(3)
 py>> c1.q, c2.q, c3.q
 MM> ([1, 2, 3], [1, 2, 3], [1, 2, 3])
 py>>

It's true. Surpise!
Hence, every "non-static in c++-meaning" variable must be initialized in
constructor. It seems strange for me.

Thank you for explanation!

Alexander, zatv at bk.ru


From ajikoe at gmail.com  Wed May 25 08:13:24 2005
From: ajikoe at gmail.com (ajikoe at gmail.com)
Date: 25 May 2005 05:13:24 -0700
Subject: can't see timer in emacs action
Message-ID: <1117023204.530512.18390@g43g2000cwa.googlegroups.com>

Hello,

I tried this code in emacs.
for i in range(3):
  time.sleep(1)
  print i

It shows the result but total result not second per second.

Any one experiance this problem

pujo



From db3l at fitlinxx.com  Fri May  6 19:21:48 2005
From: db3l at fitlinxx.com (David Bolen)
Date: 06 May 2005 19:21:48 -0400
Subject: py2exe + svn - the final drama
References: <427AD7E8.1060500@open-networks.net>
	<mailman.96.1115384045.29826.python-list@python.org>
	<uoebojc8g.fsf@fitlinxx.com>
	<just-075293.00240707052005@news1.news.xs4all.nl>
Message-ID: <uacn8j5yr.fsf@fitlinxx.com>

Just <just at xs4all.nl> writes:

> the zipimport module has an attr called _zip_directory_cache, which is a 
> dict you can .clear(). Still, reloading modules is hairy at best, its 
> probably easiest to relaunch your app when the .zip file has changed.

Except that he's getting an error during the process exit of the
current execution, which is needed to restart.  And if he updates to a
different copy, there's the bootstrap problem of how to get it back
into the standard location for the next restart since his application
will need to have it to restart in the first place.

-- David


From flupke at nonexistingdomain.com  Sun May 22 15:56:46 2005
From: flupke at nonexistingdomain.com (flupke)
Date: Sun, 22 May 2005 19:56:46 GMT
Subject: firebird and unicode
Message-ID: <2u5ke.98532$384.5621810@phobos.telenet-ops.be>

Hi,

i'm developing an app that uses wxPython and Firebird via kinterbasdb on 
Win XP SP2. On insert of a record i get this error:
(kinterbasdb.InterfaceError)
(0, "Type mismatch: Input parameter for field named [name n
ot known at this stage of query execution] must be a string, rather than 
a <type 'unicode'>.")

Python, wxPython are all unicode enabled. The firebird database is 
created with the UNICODE_FSS charset and opened as such in kinterbasdb's 
connect function (charset=UNICODE). The GUI's charset is made with 
wxGlade and there i specified UTF-8 for the encoding.

I'm out of ideas as to why i get this error message.

Any ideas?

Thanks
Benedict


From mahs at telcopartners.com  Mon May  2 17:31:39 2005
From: mahs at telcopartners.com (Michael Spencer)
Date: Mon, 02 May 2005 14:31:39 -0700
Subject: Sequences in list
In-Reply-To: <d56519$qem$1@sea.gmane.org>
References: <1115063524.407859.273070@o13g2000cwo.googlegroups.com>
	<d56519$qem$1@sea.gmane.org>
Message-ID: <d565qr$qem$2@sea.gmane.org>

Michael Spencer wrote:

> 
> def compare_forms(sequence):
>      """test whether all groups of a sequence have the same form"""
>      for length in range(4,2,-1): # look for longest match first

oops, make that range(4,1,-1) or, simply (4,3,2)

Michael



From exarkun at divmod.com  Fri May 27 18:21:04 2005
From: exarkun at divmod.com (Jp Calderone)
Date: Fri, 27 May 2005 22:21:04 GMT
Subject: write to the same file from multiple processes at the same time?
In-Reply-To: <7xacmgnwvr.fsf@ruckus.brouhaha.com>
Message-ID: <20050527222104.559.4316251.divmod.quotient.11357@ohm>

On 27 May 2005 15:10:16 -0700, Paul Rubin <"http://phr.cx"@nospam.invalid> wrote:
>Peter Hansen <peter at engcorp.com> writes:
>> And PySQLite conveniently wraps the relevant calls with retries when
>> the database is "locked" by the writing process, making it roughly a
>> no-brainer to use SQLite databases as nice simple log files where
>> you're trying to write from multiple CGI processes like the OP wanted.
>
>Oh, ok.  But what kind of locks does it use?

It doesn't really matter, does it?

I'm sure the locking mechanisms it uses have changed between different releases, and may even be selected based on the platform being used.

Jp


From rogerb at rogerbinns.com  Tue May 10 23:10:02 2005
From: rogerb at rogerbinns.com (Roger Binns)
Date: Tue, 10 May 2005 20:10:02 -0700
Subject: pyvm -- faster python
References: <mailman.164.1115548611.29826.python-list@python.org>
	<1115561483.741761.212140@f14g2000cwb.googlegroups.com>
	<m102l2-9qr.ln1@home.rogerbinns.com>
	<mailman.264.1115716603.29826.python-list@python.org>
	<vu38l2-k5v.ln1@home.rogerbinns.com>
	<7xvf5qbir1.fsf@ruckus.brouhaha.com>
Message-ID: <nt98l2-1e.ln1@home.rogerbinns.com>

"Paul Rubin" <http://phr.cx at NOSPAM.invalid> wrote in message news:7xvf5qbir1.fsf at ruckus.brouhaha.com...
> "Roger Binns" <rogerb at rogerbinns.com> writes:
>> That will rule out all the gui frameworks, SSL, cryptography
>> and numerous other packages.  Have a look at what happened to
>> Prothon.
>
> I think it would be enough to retarget SWIG.

That is also a lot of work, and a lot of toolkits that use Swig
for Python bindings are very strongly tied to the Swig-Python
internals.  For example I doubt there are many where you could
tell Swig to output Java and it would just work.  (I know none
of mine would work, nor would wxPython).

>> What ultimately killed it was the problem of having a decent
>> library.
>
> Nah, I think people just lost interest.  Otherwise, why isn't Jython
> dead?

Err, you proved my point!  Prothon was fine at the VM level.  The
author couldn't figure out how to get a decent sized "standard"
library, and ultimately ended up abandoning his VM for .Net since
that gets you a large standard library.  Jython also gets a large
standard library from the Java ones.

Roger 




From jstroud at mbi.ucla.edu  Wed May 11 13:55:03 2005
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Wed, 11 May 2005 10:55:03 -0700
Subject: Need a little parse help
In-Reply-To: <1115786308.377253.261750@o13g2000cwo.googlegroups.com>
References: <mailman.310.1115747834.29826.python-list@python.org>
	<86br7imw8e.fsf@guru.mired.org>
	<1115786308.377253.261750@o13g2000cwo.googlegroups.com>
Message-ID: <200505111055.03066.jstroud@mbi.ucla.edu>

My understanding is that Python code should keep as many possible 
implementations in mind. For example, I have been told that it would be 
unwise to do something like this in Jython because the Java GC will not 
reclaim the file resources:

for afile in more_than_just_a_few_files:
  for aline in open(afile):
    doit(aline)
  # unwisely forget to close afile

I could be wrong, though.

James

On Tuesday 10 May 2005 09:38 pm, Michael Hartl wrote:
> Mike mentions an important point, and I've been bitten by the
> phenomenon Mike mentions---but only when *writing* to files.  They
> should always be closed explicitly, as in
>
> f = file(filename, 'w')
> f.write(somestring)
> f.close()
>
> On the other hand,  I've never encountered a problem with the "for line
> in file(filename)" idiom.  A similar time-saver is writing something
> like
>
> s = file(filename).read()
>
> which puts the entire file as a string in the variable s.  In this
> case, as in the file iteration case, we save two lines of code and one
> variable.  It may not sound like much, but
>
> f = file(filename)
> s = f.read()
> f.close()
>
> seems much more cumbersome to me, especially when doing a lot of file
> reads.
>
> In short, my experience is that explicitly closing a file is
> unnecessary when reading.  I could be wrong, though, and I'd be very
> interested to see an example of either idiom above leading to problems.
>
> Michael
>
> --
> Michael D. Hartl, Ph.D.
> CTO, Quark Sports LLC
> http://quarksports.com/

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From osv at javad.ru  Sat May  7 08:33:57 2005
From: osv at javad.ru (Sergei Organov)
Date: 07 May 2005 16:33:57 +0400
Subject: Encryption with Python?
References: <1115324411.952821.150780@o13g2000cwo.googlegroups.com>
	<001301c552db$dd19d3e0$0201a8c0@mcuf7> <d5i0as$ejd$1@sea.gmane.org>
	<mailman.134.1115466844.29826.python-list@python.org>
Message-ID: <d5icjl$5lb$1@n6.co.ru>

"Anthra Norell" <anthra.norell at tiscalinet.ch> writes:

> Thanks a lot for the feedback. This is certainly a great learning
> experience. It's a fascinating topic too. Without wishing to annoy, I'd be
> interested in knowing more. I insert questions below.

There is a lot of information about the issues on the net. Before asking
questions, isn't it better to make some research? For example, your last
question is perfectly answered here:

<http://www.faqs.org/faqs/cryptography-faq/part02/>

"""
2.3. How do I present a new encryption scheme in sci.crypt?

  ``I just came up with this neat method of encryption. Here's some
  ciphertext: FHDSIJOYW^&%$*#@OGBUJHKFSYUIRE. Is it strong?'' Without a
  doubt questions like this are the most annoying traffic on sci.crypt.
  ...
"""

I'd suggest you to start your education here before you invent yet
another "simple" solutions for a complex problem:

<http://www.faqs.org/faqs/cryptography-faq/part01/>

HTH.

-- 
Sergei.


From stephen.thorne at gmail.com  Wed May 25 20:53:31 2005
From: stephen.thorne at gmail.com (Stephen Thorne)
Date: Thu, 26 May 2005 10:53:31 +1000
Subject: vim configuration for python
In-Reply-To: <d73255$e8b$1@nntp1.jpl.nasa.gov>
References: <d73255$e8b$1@nntp1.jpl.nasa.gov>
Message-ID: <3e8ca5c80505251753d46b0d9@mail.gmail.com>

On 26/05/05, Leonard J. Reder <reder at jpl.nasa.gov> wrote:
> Hello,
> 
> I am looking at configuring vim for Python.  Most importantly I
> need 4 spaces when the tab is hit.  I am searching and getting
> a bit confused.  Does anyone know where I can find a set of
> ready made .vimrc and ~/.vim/syntax/python.vim.  If could find
> c.vim and cpp.vim these would be useful also.

The default python.vim in the /usr/share/vim/vim63/ftplugin/ directory
automatically set the shiftwidth to 4 wide (i.e. a <tab> keypress
makes 4 spaces) and automatically uses spaces instead of tab
characters. A tab character in your file will be rendered as 8 wide.

-- 
Stephen Thorne
Development Engineer


From sjmachin at lexicon.net  Sun May  8 18:39:40 2005
From: sjmachin at lexicon.net (John Machin)
Date: Mon, 09 May 2005 08:39:40 +1000
Subject: Trouble saving unicode text to file
References: <1115500976.571232.76100@z14g2000cwz.googlegroups.com>
	<427DDAA5.9020606@v.loewis.de>
	<t4qr71h88us709h4es4oa4fbamnkgkj0sj@4ax.com>
	<427E5136.4000300@v.loewis.de>
Message-ID: <gq0t7194aiuock5t67gqvudokla2lr7hbp@4ax.com>

On Sun, 08 May 2005 19:49:42 +0200, "Martin v. L?wis"
<martin at v.loewis.de> wrote:

>John Machin wrote:
>> Martin, I can't guess the reason for this last suggestion; why should
>> a Windows system use iso-8859-1 instead of cp1252?
>
>Windows users often think that windows-1252 is the same thing as
>iso-8859-1, and then exchange data in windows-1252, but declare them
>as iso-8859-1 (in particular, this is common for HTML files).
>iso-8859-1 is more portable than windows-1252, so it should be
>preferred when the data need to be exchanged across systems.

Martin, it seems I'm still a long way short of enlightenment; please
bear with me:

Terminology disambiguation: what I call "users" wouldn't know what
'cp1252' and 'iso-8859-1' were. They're not expected to know. They
just type in whatever characters they can see on their keyboard or
find in the charmap utility. It's what I'd call 'admins' and
'developers' who should know better, but often don't.

1. When exchanging data across systems, should not utf-8 be
preferred???

2. If the Windows *users* have been using characters that are in
cp1252 but not in iso-8859-1, then attempting to convert to iso-8859-1
will cause an exception. 

>>> euro_win = chr(128)
>>> euro_uc = euro_win.decode('cp1252')
>>> euro_uc
u'\u20ac'
>>> unicodedata.name(euro_uc)
'EURO SIGN'
>>> euro_iso = euro_uc.encode('iso-8859-1')
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
UnicodeEncodeError: 'latin-1' codec can't encode character u'\u20ac'
in position 0: ordinal not in range(256)
>>>

I find it a bit hard to imagine that the euro sign wouldn't get a fair
bit of usage in Swedish data processing even if it's not their own
currency.

3. How portable is a character set that doesn't include the euro sign?

Regards,
John


From jstroud at mbi.ucla.edu  Fri May  6 13:52:28 2005
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Fri, 6 May 2005 10:52:28 -0700
Subject: hard memory limits
In-Reply-To: <d5g94e$8d0$1@sea.gmane.org>
References: <d5f9jl$k6d$1@domitilla.aioe.org> <86vf5w5tkz.fsf@guru.mired.org>
	<d5g94e$8d0$1@sea.gmane.org>
Message-ID: <200505061052.28325.jstroud@mbi.ucla.edu>

On Friday 06 May 2005 10:29 am, Fredrik Lundh wrote:
> Mike Meyer wrote:
> > Without platform information, it's hard to say. On a modern Unix
> > system, you only run into system resource limits when the system is
> > heavily loaded. Otherwise, you're going to hit per-process limits. In
> > the latter case, adding RAM or swap won't help at all. Raising the
> > per-process limits is the solution.
>
> does Mac OS X ship with memory limits set by default?  isn't that
> a single-user system?
>
> </F>

Dear original poster or whoever is interested in OS X:

OS X is not a single user system. It is BSD based unix. And its fv at king 
sweeeeeeeeeeeeeet! (Though I'm using only Linux right now :o/

If configurable memory limits are a problem and if running python from the 
shell, do:

% unlimit

You can also change this in your .cshrc, .tcshrc, .bashrc, .k[whatever for 
korn], etc. if you run a custom shell.

Your shell settings for each user are in NetInfo Manager.

If you are completely clueless as to what the hell I'm talking about, then 
stop and try this:

1. start a Terminal
2. type this at the prompt:

% echo unlimit >> .bashrc

3. Quit that terminal.
4. Start a new terminal.
5. Start python and make your list.

Hope it works.

James

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From bearophileHUGS at lycos.com  Sun May  8 13:34:20 2005
From: bearophileHUGS at lycos.com (bearophileHUGS at lycos.com)
Date: 8 May 2005 10:34:20 -0700
Subject: pyvm -- faster python
In-Reply-To: <1115561483.741761.212140@f14g2000cwb.googlegroups.com>
References: <mailman.164.1115548611.29826.python-list@python.org>
	<1115561483.741761.212140@f14g2000cwb.googlegroups.com>
Message-ID: <1115573660.381851.297130@g14g2000cwa.googlegroups.com>

I've seen the benchmarks, they look quite interesting.

This project is probably a LOT of work; maybe people can tell us about
such efforts *before* doing so much work, so we can discuss it, and
avoid wasting time.

Maybe you can explain us why it is so fast, and/or maybe you can work
with the other developers to improve the speed of the normal CPython,
this can require equal or less work for you, and it can produce more
long-lasting results/consequences for your work.

Bye,
Bearophile



From tgm2tothe10thpower at replacetextwithnumber.hotmail.com  Mon May 23 14:04:29 2005
From: tgm2tothe10thpower at replacetextwithnumber.hotmail.com (Thomas G. Marshall)
Date: Mon, 23 May 2005 18:04:29 GMT
Subject: What are OOP's Jargons and Complexities?
References: <1116843761.619249.144790@g47g2000cwa.googlegroups.com>
	<1116869986.145116.303340@f14g2000cwb.googlegroups.com>
Message-ID: <NWoke.9561$n95.4371@trndny08>

Paul McGuire coughed up:
> Is this supposed to be some sort of wake-up call or call-to-arms to
> all the CS lemmings who have been hoodwinked by Sun into the realm of
> jargon over substance?

...[rip]...

> You certainly seem to have a lot of energy and enthusiasm for these
> topics.  It would be nice if you could find a way to illuminate and
> educate, without falling prey to the urge to pontificate.  If you
> really have some points to make, put away the breathless and profane
> debate style - it just gets in the way of anything you're trying to
> say.  Really, we are *mostly* adults here, and can make up our own
> minds on most things.


Of the many things that bother me about his post is his tendency to voice 
his conclusions as if they would be universally arrived at given his data. 
{shrug}  Paying attention to this guy's post has proven to be a complete 
WOT.


-- 
I've seen this a few times--Don't make this mistake:

Dwight: "This thing is wildly available."
Smedly: "Did you mean wildly, or /widely/ ?"
Dwight: "Both!", said while nodding emphatically.

Dwight was exposed to have made a grammatical
error and tries to cover it up by thinking
fast.  This is so painfully obvious that he
only succeeds in looking worse.




From tjreedy at udel.edu  Mon May 30 14:58:10 2005
From: tjreedy at udel.edu (Terry Reedy)
Date: Mon, 30 May 2005 14:58:10 -0400
Subject: How to run functions in the background?
References: <429B3A9E.9060201@mailshack.com>
Message-ID: <d7fnj2$sh3$1@sea.gmane.org>


"Ognjen Bezanov" <ognjen at mailshack.com> wrote in message 
news:429B3A9E.9060201 at mailshack.com...
> I need to find a way to 'fork' a function into the background yet still
> be able to send commands to it.

Others gave you the answer to this..

> I am writing a media player, and I have a function which plays the
> media. I want to be able to run this function but to (at the same time)
> be able to send commands from it (e.g. pause, play etc...)

But for this, you might look into PyGame, which, I believe, has functions 
like this.

Terry J. Reedy





From ruach at chpc.utah.edu  Mon May 23 15:46:24 2005
From: ruach at chpc.utah.edu (Matthew Thorley)
Date: Mon, 23 May 2005 13:46:24 -0600
Subject: how do you return an exit code with out exiting
In-Reply-To: <11949efia20ca7@corp.supernews.com>
References: <d6t7vj$rk5$1@vegh.ks.cc.utah.edu>
	<11949efia20ca7@corp.supernews.com>
Message-ID: <d6tbui$sb4$1@vegh.ks.cc.utah.edu>

thanks thats perfect!

Grant Edwards wrote:
> On 2005-05-23, Matthew Thorley <ruach at chpc.utah.edu> wrote:
> 
> 
>>I wrote a simple python program that scrapes a web page every
>>30 secons and dumps the result in a data base. I want to use
>>my linux distros build in init tools to run the script in the
>>back ground as a daemon. The problem is when I call the daemon
>>script to background the program I wrote it just hangs,
>>waiting for my program to exit 1 or 0. My program never does
>>exits because its looping every 30 seconds.
>>
>>Is there a way I can pass an exit value with out actualy exiting?
> 
> 
> No.
> 
> 
>>or is there are better way to do this?
> 
> 
> Yes.  
> 
> To be a well-behavied daemon, you need to do the things
> described in this howto:
> 
>   http://www.linuxprofilm.com/articles/linux-daemon-howto.html
> 
> Here are a couple references on how to do this in Python:
> 
>   http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/278731
>   http://homepage.hispeed.ch/py430/python/
>   


From sjmachin at lexicon.net  Tue May  3 17:34:34 2005
From: sjmachin at lexicon.net (John Machin)
Date: Wed, 04 May 2005 07:34:34 +1000
Subject: Best way to parse file into db-type layout?
References: <cis2715rq97gb4taalf81ab33qmif2r4qr@4ax.com>
	<a6v2711u3hft7ed2ft95gqiggi2cnaak2r@4ax.com>
	<32r471h0nnq5aieeip6p83bpo54fcv9ooq@4ax.com>
	<b995711n9svdg1ajo5v63b2457u5j30odi@4ax.com>
	<rlif71ht0tmlt4t5h0rftkv3soofi06edv@4ax.com>
Message-ID: <urkf71tetkahi37kue9bvn00ab99tgp6bt@4ax.com>

On Tue, 03 May 2005 19:12:07 GMT, Peter A. Schott
<paschott at no.yahoo.spamm.com> wrote:

>Thanks for the comments.  Quick notes:
>1.  Yes, ultimate goal is to output various fields into Excel,

Peter, (again) I'd like to suggest that putting some or all of the
data into storage of type X (whether X is a database or Excel or 5x3
index cards) is unlikely to be the true ultimate goal ...

> but I need to
>enter the data into a DB as well to avoid having any strange problems. That may
>be handled by a completely different process.  I should have been more exact in
>saying that my current goal is to get this data into a database.

Let me get this straight: Process 1 is going to put some fields into
Excel. Process 2 is going to put the data into a DB to avoid "any
strange problems" -- with what? The (completely different) process 1?

>
>3.  regarding read/write each row - I started thinking about working my way
>through the dictionary.  This file could have up to 1900 pairs of data per row.
>That's an awful lot of columns to put into a database table, especially if quite
>a few will be NULL.

Focussing (briefly) on the storage details, it's also an awful lot
compared to the max 255 columns in Excel. Dragging ourselves back up
to the live situation that your data is modelling, it's also an awful
lot of attributes for any object (whether real or virtual) to have. It
must be possible to break each line down further. It's extremely
unlikely to be stored like that on the mainframe; it's just been spat
out like that to go to the letter-printing bureau. You may like to
consider talking to the mainframe folk about their data structures,
and how you can more or less reconstruct those structures from the
letter file.

>  I starting thinking of stepping through each pair by each
>row.  The rows are identified by Letter type and an account number (always the
>same field #).  I would want to use those, and insert something like:
>LetterType, Account #, Field#, Field Data, (current date)

This method of representing the data is close to the other extreme,
compared to to 1900 columns per row. With this method, the five or so
components of the customer address (for example) will be in different
rows in the database i.e. not grouped together with a handle that says
"address". It doesn't appear to me to be any more usable than the
letter file.

If the customer can have more than one letter of the same type on the
same date, you will need to store also something that uniquely
identifies the letter e.g. the line number in the file; otherwise the
data from multiple letters will be mingled. Even if "they" say it's
not possible, and you believe them, it might be a good idea anyway --
might make it easier than working with (letter_type, acct_num) when
you are trying to glue the fragments back together.

If it's not possible because the 1900 fields = something like 100
fields x an allowance up to 19 repetitions of a similar scenario, then
you know what to do next :-)

You probably mean "effective date as at which the file was produced"
rather than "current date". Only one file per day? There may be a
backlog when you start this exercise, there may be a backlog in the
future after a disruption in the pipeline. You may like to check if
the mainframe assigns a unique name/number to such files and use that
instead as part of your composite key.

> No Quotes (no
>Commas in values).  Coming from the mainframe, I don't have to worry about
>embedded special characters within the file as they can't be entered into these
>fields to start with.

Yes, peace in our time, the cheque's in the mail, and of course
they'll still love you in the morning :-)

>Thanks to all.  Off to search for dictionaries and databases now.  :-)

Searching for dictionaries???

As we are by now way OT (even by this group's standards), I'll just
leave you with my previous comments:
>> 
>> What you need is (a) a clear appreciation of what you are trying to do
>> with the data at a high level (b) then develop an understanding of
>> what is the underlying data model (c) then and only then worry about
>> technical details.
>> 

It's been nice kibitzing your game.
Lots of luck,
John





From amichail at gmail.com  Sun May  1 18:25:21 2005
From: amichail at gmail.com (Amir  Michail)
Date: 1 May 2005 15:25:21 -0700
Subject: editor for shelve files
References: <1114942869.144312.253720@o13g2000cwo.googlegroups.com>
	<qnk7jiiy741.fsf@arbutus.physics.mcmaster.ca>
Message-ID: <1114986321.370822.140210@f14g2000cwb.googlegroups.com>

David M. Cooke wrote:
> "Amir  Michail" <amichail at gmail.com> writes:
>
> > Hi,
> >
> > Is there a program for editing shelve databases?
> >
> > Amir
>
> I doubt it. A shelf is basically just a file-based dictionary, where
> the keys must be strings, while the values can be arbitrary objects.
> An editor could handle the keys, but most likely not the values.
>
> If you have an editor for arbitrary objects, you could probably make
> an editor for shelfs easily enough :-)
>
> Do you have a specific use in mind? That would be easier to handle
> than the general case.

Such an editor could at least handle some basic types including nested
lists and dictionaries.

I've written an application that uses many shelve files.  Sometimes I
need to make a minor change to the data and don't really want to write
code just to make that change.

Amir

>
> --
> |>|\/|<
>
/--------------------------------------------------------------------------\
> |David M. Cooke
> |cookedm(at)physics(dot)mcmaster(dot)ca



From dave.benjamin at gmail.com  Fri May  6 12:50:53 2005
From: dave.benjamin at gmail.com (Dave Benjamin)
Date: Fri, 06 May 2005 09:50:53 -0700
Subject: annonymous functions -- how to
In-Reply-To: <mailman.84.1115365568.29826.python-list@python.org>
References: <1115239458.776800.240080@g14g2000cwa.googlegroups.com><d5bdip$bpp$05$2@news.t-online.com><42795acb.685370470@news.oz.net><1115264804.625020.203800@f14g2000cwb.googlegroups.com><YuWdnVUxIKrdmuffRVn-oA@powergate.ca>	<TPree.10739$fI.442@fed1read05>
	<mailman.84.1115365568.29826.python-list@python.org>
Message-ID: <2fNee.10965$fI.8507@fed1read05>

Fredrik Lundh wrote:
> Dave Benjamin wrote:
> 
>>In this case, having to name these callback functions is tiring and
>>awkward, and (IMHO) disrupts the flow of my function:
> 
> so name them all "func" or "next" or something, so you don't have
> to think.  once the object is bound, the name is irrlevant.

Sure, you could do this, but then you'd have multiple functions at 
different nesting levels with the same name, which would be confusing. 
You could call them "func1", "func2", "func3", and so on, but at this 
point it becomes painfully obvious that you really don't care what the 
names are; you're only naming them because you have to. As Paul Graham 
would say, it's "the human compiler at work".

> there's also:
> 
>     def add_thingy(self):

What object is "self"? Are we defining a method at this point?

>         yield get_new_thingy_id; thingy_id = self.result

What is "get_new_thingy_id"? A function? To whom are we yielding here?

Dave


From a at b.c  Mon May  9 02:52:39 2005
From: a at b.c (D H)
Date: Mon, 09 May 2005 01:52:39 -0500
Subject: Fredrik Lundh
In-Reply-To: <mailman.192.1115619611.29826.python-list@python.org>
References: <mailman.139.1115189526.6583.python-list@python.org><maednQfrx_iwL-XfRVn-hA@powergate.ca>	<Av-dnbF5u_SOpOffRVn-vQ@comcast.com>	<mailman.66.1115324909.29826.python-list@python.org>	<k42dnWFaUMRQeePfRVn-pg@comcast.com>	<mailman.188.1115614698.29826.python-list@python.org>	<h9qdneSvU71kZuPfRVn-rw@comcast.com>
	<mailman.192.1115619611.29826.python-list@python.org>
Message-ID: <y7mdnd5e-JckleLfRVn-og@comcast.com>

Robert Kern wrote:
> The Daily Python-URL isn't obligated to link to *anything*.

I never suggested it was.


From allan at allan.allan  Tue May  3 00:00:18 2005
From: allan at allan.allan (Allan)
Date: Tue, 3 May 2005 04:00:18 +0000 (UTC)
Subject: If you use PayPal you might consider an alternative
Message-ID: <d56t0h$745$1@garrison.globalnet.hr>

If you used PayPal and are not satisifed with their service there is a
new and better service opening. They will be starting up during the
early summer this year. The best of all - signup is FREE.

Check out their benefits:

www.greenzap.com/benefits



From temp at mclift.fsnet.co.uk  Tue May 17 08:30:14 2005
From: temp at mclift.fsnet.co.uk (temp at mclift.fsnet.co.uk)
Date: 17 May 2005 05:30:14 -0700
Subject: Markov chain with extras?
In-Reply-To: <1116283144.051195.193370@g44g2000cwa.googlegroups.com>
References: <1116278880.976106.191780@o13g2000cwo.googlegroups.com>
	<1116283144.051195.193370@g44g2000cwa.googlegroups.com>
Message-ID: <1116333014.950383.310040@g44g2000cwa.googlegroups.com>

Hi,

I think is more easy explained as two linked markov chains. So given
one list the other can be generated.

Thanks,

Malcolm



From claird at lairds.us  Thu May 12 12:08:03 2005
From: claird at lairds.us (Cameron Laird)
Date: Thu, 12 May 2005 16:08:03 GMT
Subject: Compiling Tcl apps redux
References: <117ustfnqpqce67@corp.supernews.com> <18c4l2-vg3.ln1@lairds.us>
	<1186p72flnosr88@corp.supernews.com>
Message-ID: <kfbcl2-u7o.ln1@lairds.us>

In article <1186p72flnosr88 at corp.supernews.com>,  <joey at swri.edu> wrote:
			.
			.
			.
>Absolutely!  Looking at the wiki there are a bunch of solutions, all of
>which work in specialized circumstances.  Nothing like, say the "freeze"
>script of Python.
			.
			.
			.
!?!  Has Python's freeze changed so much that it's now a
universal solution?  I need to re-acquaint myself with it
...


From benji at benjiyork.com  Mon May  2 17:04:26 2005
From: benji at benjiyork.com (Benji York)
Date: Mon, 02 May 2005 17:04:26 -0400
Subject: Mouseclick
In-Reply-To: <1e140f34.0505021030.9f615dc@posting.google.com>
References: <1e140f34.0505021030.9f615dc@posting.google.com>
Message-ID: <427695DA.5040104@benjiyork.com>

Terje Johan Abrahamsen wrote:
> I have been trying desperately for a while to make Python push the
> left mousebutton.

Here's some code I've used to simulate a *right* click, but it should 
be obvious how to make it do what you want:

void sendRightClick(void)
{
     PostMessage(GetForegroundWindow(), WM_RBUTTONDOWN, MK_RBUTTON, 0);
     PostMessage(GetForegroundWindow(), WM_RBUTTONUP, 0, 0);
}

--
Benji York


From philippe at philippecmartin.com  Tue May 31 09:11:53 2005
From: philippe at philippecmartin.com (Philippe C. Martin)
Date: Tue, 31 May 2005 13:11:53 GMT
Subject: exit after process exit
References: <1117542386.379343.215340@g47g2000cwa.googlegroups.com>
Message-ID: <toZme.747$RV5.546@newssvr30.news.prodigy.com>

os.popen ?

Regards,

Philippe



ajikoe at gmail.com wrote:

> Hello,
> 
> I would like to run a python process and wait until the process exit.
> How can I do it?
> 
> For example I would like to run a.exe. and wait until a.exe exit.
> 
> Sincerely Yours,
> Pujo



From brian at mirror.org  Mon May  2 19:14:57 2005
From: brian at mirror.org (Brian Roberts)
Date: 2 May 2005 16:14:57 -0700
Subject: empty lists vs empty generators
Message-ID: <509534af.0505021514.5e49aa2@posting.google.com>

I'm using using generators and iterators more and more intead of
passing lists around, and prefer them.  However, I'm not clear on the
best way to detect an empty generator (one that will return no items)
when some sort of special case handling is required.

Typical code for handling an empty list:
    if somelist:
        for x in somelist: 
            something(x)
    else:
        empty_list_special_case

But this doesn't work with iterators -- a generator is "true"
regardless of whether its going to return any items.  (I understand
why).

The closest equivalent I know of is:
    n = 0
    for n, x in enumerate(somegenerator()):
       something(x)
    if n == 0:
       empty_list_special_case

Which seems rather awkward -- doesn't read as easily for me, and
introduces another variable.

Q1: Is there a better or alternate way to handle this?
Q2: Is there a way that handles both lists and generators, so I don't
have to worry about which one I've got?

Thanks,
Brian.


From jeffelkins at earthlink.net  Sat May 21 09:40:39 2005
From: jeffelkins at earthlink.net (Jeff Elkins)
Date: Sat, 21 May 2005 09:40:39 -0400
Subject: SQL Query via python
In-Reply-To: <200505211056.36718.modelnine@ceosg.de>
References: <200505202357.01579.jeffelkins@earthlink.net>
	<428EBEEF.4040500@boonthavorn.com>
	<200505211056.36718.modelnine@ceosg.de>
Message-ID: <200505210940.39491.jeffelkins@earthlink.net>

On Saturday 21 May 2005 04:56 am, Heiko Wundram wrote:
> Am Samstag, 21. Mai 2005 06:54 schrieb Sakesun Roykiattisak:
> > Try
> >
> > cursor.execute (
> > """
> >   SELECT name, month, day ,category, city FROM bday
> >   WHERE %s = %s
> > """
> >   %(arg1,arg2))
>
> *argh* You don't do any quoting of SQL-parameters, and that's more than
> bad! (leaves you up to the mercy of SQL-injection attacks, for example)
>
> What you basically want to have is something like the following:
>
> # Make sure arg1 is actually just characters.
> if not arg1.isalpha():
>     raise RuntimeError, "trying to do SQL-injection attack?!"
>
> # Now do query.
> cursor.execute("""
> SELECT name, month, day, category, city FROM body
> WHERE %s = %%s
> """ % (arg1,),
> (arg2,))
>
> See how I didn't just use arg1 to paste it in the query string, but checked
> it before trying the query to consist only of characters. You'd have to
> adjust this accordingly for field-names you use (maybe you use underscores,
> etc.). But, be sure that arg1 contains no ";"!
>
> HTH!

Hey, I could barely spell SQL yesterday...:)

I really appreciate the pointers!

Jeff






From plsullivan63 at gmail.com  Mon May 16 13:00:22 2005
From: plsullivan63 at gmail.com (plsullivan)
Date: 16 May 2005 10:00:22 -0700
Subject: newbie - variable "buried in quotes"
In-Reply-To: <7pmdnSlf65zMTRXfRVn-2A@powergate.ca>
References: <1116260476.332975.87680@g49g2000cwa.googlegroups.com>
	<7pmdnSlf65zMTRXfRVn-2A@powergate.ca>
Message-ID: <1116262822.735406.23940@f14g2000cwb.googlegroups.com>

Thanks guys but I am still not getting it. This part -->
gp.FeatureclassToCoverage_conv?ersion("'Database
Connections\\%s at GIS_srv-earth.?sde\\GIS.GIS.Cadastral\\GIS.GI?S.Parcels'

POLYGON", prcl83, "", "DOUBLE") <--   % luser     is one long command.
I need to be able to insert the luser variable deep in the middle of
that.
Phil



From phillip.watts at anvilcom.com  Tue May  3 14:47:42 2005
From: phillip.watts at anvilcom.com (phil)
Date: Tue, 03 May 2005 13:47:42 -0500
Subject: Read / Write image file
References: <mailman.596.1115144845.6582.python-list@python.org>
Message-ID: <4277C74E.5060509@anvilcom.com>

 
> I have a image file on my pc, say a .jpg.  Basically I want to setup a
> client/server socket, and I want the client to read in the jpg and send
> it to the server, where the server can write that data into a new file
> on the server.
> 
> I tried just doing something like..
> 
> x = open("abc.jpg")
> y = x.read()
> tmp = open("newFile.jpg", "w")
> tmp.write(y)
> tmp.close()
> x.close()
> 
> ...but that doesn't give me a copy of abc.jpg
> 
> any ideas?  Thanks
> 

What in the world does it give you?
If this is Windoze you should open x "rb"
and tmp "wb", otherwise it will expand linefeeds.



From gijs at globaltrack.com  Wed May 18 10:47:38 2005
From: gijs at globaltrack.com (Gijs Korremans)
Date: Wed, 18 May 2005 16:47:38 +0200
Subject: What are com_record objects
Message-ID: <200505181452.j4IEqdcT006213@mail.globaltrack.com>

Hi,

I want to connect to a com object with win32.client.
Through this com object a have to connect to an other device with object.Connect(struct IPADDRESS_STRUCT * ip)

the struct IPADDRESS_STRUCT looks like this:

Byte Offset	Name	Type	Length (Bytes) 	Description
0	b1	BYTE	1		Byte 1 of an internet address
1	b2	BYTE	1		Byte 2 of an internet address
2	b3	BYTE	1		Byte 3 of an internet address
3	b4	BYTE	1		Byte 4 of an internet address

Because Python doesn't have structs like C, I tried to do it with a class (C structs are classes with no private) and with pack but I always get the error message "Only com_record objects can be used as records"

I'm new in the python language but I couldn't find anything about structs or com_records in python on the internet.

Does anyone know how to do this? 

Kind regards, 


Gijs

--
This message has been scanned for viruses and
dangerous content by Network Sentry, and is
believed to be clean.
http://www.networksentry.co.za



From iv at lantic.net  Mon May 16 11:03:07 2005
From: iv at lantic.net (iv at lantic.net)
Date: 16 May 2005 08:03:07 -0700
Subject: Structuring larger applications - ideas
Message-ID: <1116255787.625276.221670@g14g2000cwa.googlegroups.com>

Hello,

I'm busy with a large application and feel it would eas my work if I
can specify dependencies on the granularity of packages, rather than
modules and classes.  Eg:

- By convention I do the one class per file thing.  SO in python this
means one class per module - naming classes after their modules. (this
helps with version control, and several other little irritations, for
example)
- I'd like to specify once for a _package_ that it depends upon another
_package_.
- The following should then also be true for a module A in package X
(which depends upon package Y):
    1) X should be available in the namespaces of module A (in fact for
all modules in X)
    2) X.B should refer to X.B.B  (I name classes after their modules).

(2) Can be done easily by, eg putting the following in X.__init__.py:
   from B import B

What's the feeling in this group about the idea & plans to get closer
to accimplishing it?

-i



From aa at hanmail.net  Thu May 26 07:04:47 2005
From: aa at hanmail.net (´º½º66)
Date: Thu, 26 May 2005 20:04:47 +0900
Subject: It's just a test.. sorry
Message-ID: <d74a63$7db$1@news2.kornet.net>

sorry




From lycka at carmen.se  Mon May 30 14:04:02 2005
From: lycka at carmen.se (Magnus Lycka)
Date: Mon, 30 May 2005 20:04:02 +0200
Subject: Exiting SocketServer: socket.error: (98, 'Address already in use')
Message-ID: <d7fkii$6pa$1@wake.carmen.se>

I have a socket server like below which I want to exit when
it's out of data. If I interrupt the client, I'll get a
broken pipe on the server side, and after a Ctrl-C, I can
restart the server again, but if I let it run out of data,
and exit via handle_error as can be seen below, I will get
a socket.error: (98, 'Address already in use') when I try
to restart the server. (Unless I wait a minute or so, or
use another port.) I feel like I'm waving a dead chicken
here. I can't seem to find any proper description on how to
handle this in the docs for SocketServer or socket, and my
futile experiments seem to lead nowhere... Neither Nutshell
nor the Essential Reference helped me solve this.

I'm using Python 2.2.3 on Linux. Why doesn't my socket
get released by the OS when I exit via my handle_error?

class MyRequestHandler(SocketServer.BaseRequestHandler):
     def handle(self):
         while True:
             [snip]
             try:
                 [snip]
             except [snip]:
                 # Done!
                 # Uncommenting the next line makes no difference
                 # self.request.close()
                 sys.exit()

class ExitableSocketServer(SocketServer.TCPServer):
     def handle_error(self, request, client_address):
         exc_info = sys.exc_info()
         if exc_info and isinstance(exc_info[1], SystemExit):
             request.shutdown(2)
             request.close()
             del request
             self.socket.shutdown(2)
             self.socket.close()
             del self.socket
             sys.exit()
         SocketServer.TCPServer.handle_error(self, request, client_address)

...

server = ExitableSocketServer(('', port), MyRequestHandler)
server.serve_forever()


From rupole at hotmail.com  Tue May 10 20:18:25 2005
From: rupole at hotmail.com (Roger Upole)
Date: Tue, 10 May 2005 20:18:25 -0400
Subject: win32com and IIS
References: <1115744207.222691.276160@f14g2000cwb.googlegroups.com>
Message-ID: <42815029$1_1@spool9-west.superfeed.net>

Are you authenticating when you connect to the web server ?
If you're connected as an anonymous user, you don't have
enough privilege.

       Roger

"Chris Curvey" <ccurvey at gmail.com> wrote in message 
news:1115744207.222691.276160 at f14g2000cwb.googlegroups.com...
> Hi all,
>
> I have a python script that uses the PAMIE libraries to drive IE.  It
> runs fine from the command line, but it appears to have some
> permissions problem when I run it via CGI.  Here's the stack trace that
> I'm getting.
>
>  File "c:\documents and settings\chris\my
> documents\cms\com\artfact\cms\model\cPAMIE.py", line 54, in __init__
>    self._ie = DispatchEx('InternetExplorer.Application')
>  File "C:\Program Files\Plone
> 2\Python\lib\site-packages\win32com\client\__init__.py", line 112, in
> DispatchEx
>    dispatch = pythoncom.CoCreateInstanceEx(clsid, None, clsctx,
> serverInfo, (pythoncom.IID_IDispatch,))[0]
> com_error: (-2147024891, 'Access is denied.', None, None)
>
> I found this thread in the archives, but the changes made there don't
> seem to have helped.
>
> http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/3273ca109892b275/0da814cb9f341568?q=win32com+iis&rnum=2#0da814cb9f341568
>
> Any suggestions?
> 



----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups
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From querypk at gmail.com  Sat May 28 17:06:22 2005
From: querypk at gmail.com (querypk at gmail.com)
Date: 28 May 2005 14:06:22 -0700
Subject: scipy for python 2.4
Message-ID: <1117314382.677584.133160@o13g2000cwo.googlegroups.com>

Did anyone try to install Scipy package on python2.4 linux version. I
see only python2.3 version of scipy released. When I try to install I
get an dependency warning saying scipy cannot find python2.3.

Can someone point me to python2.4 version of scipy and help me install.



From Sebastien.Boisgerault at gmail.com  Wed May 11 16:42:17 2005
From: Sebastien.Boisgerault at gmail.com (=?iso-8859-1?q?S=E9bastien_Boisg=E9rault?=)
Date: 11 May 2005 13:42:17 -0700
Subject: Python Documentation (should be better?)
In-Reply-To: <mailman.398.1115843305.29826.python-list@python.org>
References: <5C99C308457E6D4EA5448EA52A66004A675A6E@or.mxim.com>
	<17026.26789.592527.975821@montanaro.dyndns.org>
	<mailman.398.1115843305.29826.python-list@python.org>
Message-ID: <1115844136.954449.327260@g44g2000cwa.googlegroups.com>


> I can usually end up where I want to be by picking up my copy of
_Python
> in a Nutshell_.  95% of the time I can find what I want in there or
from
> there.

This book is really great. Could anybody convince Alex Martelli to
basically make it freely available to the world ? <0.9 wink>.

I would gladly pay the price of the book to make it free !

... just dreamin' ...

SB



From dark.ryder at gmail.com  Fri May 13 09:15:47 2005
From: dark.ryder at gmail.com (dark.ryder at gmail.com)
Date: 13 May 2005 06:15:47 -0700
Subject: String formatting strangeness
Message-ID: <1115990147.880532.61730@o13g2000cwo.googlegroups.com>

I must be doing something wrong, but for the life of me, I can't figure
out what.  Here's the code snippet which is giving me grief:

print type(number), type(name), type(seconds // 60), type(seconds % 60)
print "\t\t\t<section number=\"%i\" title=\"%s\" length=\"%i:%i\"/>\n"
% [number, name, seconds // 60, seconds % 60]

(These are lines 49 and 50 of the script; I can post the whole thing if
someone wants, but I think this is enough to see why it's driving me
nuts.)

And the output:

<type 'int'> <type 'str'> <type 'int'> <type 'int'>
Traceback (most recent call last):
  File "X:\Music (FLAC)\Post-process new rips.py", line 50, in ?
    print "\t\t\t<section number=\"%i\" title=\"%s\"
length=\"%i:%i\"/>\n" % [number, name, seconds // 60, seconds % 60]
TypeError: int argument required

Wait, what?  The first line clearly identifies that the the first,
third, and fourth elements are all integers, yet the error says that
*lack* of integers is the problem.  If I change all "%i"s to "%d", I
get the same problem, and changing to "%s" (hey, it was worth a shot)
gives "TypeError: not enough arguments for format string" instead.
Huh?  I see four placeholders and a four-element tuple.

Can anyone enlighten me here?



From justanbcoder at yahoo.com  Tue May 31 16:25:34 2005
From: justanbcoder at yahoo.com (newcoder)
Date: 31 May 2005 13:25:34 -0700
Subject: Newbie Here
In-Reply-To: <mailman.273.1117521603.18027.python-list@python.org>
References: <mailman.273.1117521603.18027.python-list@python.org>
Message-ID: <1117571134.561081.276370@z14g2000cwz.googlegroups.com>

The impression for me for python is that it can be scalable and you can
really build a full fledge application from it. In the past I used to
evangelized on certain language and think that the world is full of
philips screws that I can use my philips screwdriver to screw at. I was
totally wrong. But generally I think if you are looking at web
scripting, PHP is simple to learn and fast to execute; if you want to
automate and parse data on the fly, Perl is no doubt; and if you want
to build application and not in particular in execution speed, Python
is the way to go. I considered myself as a newbie too as I always
trying to learn a thing or two, here and there.

The way I learn to program usually I would get one of those open source
application written in whatever language I wish to learn and I would
study it from ground zero. I would try to understand the programmer
style and also try to understand his logic and why he want to do this
or that. You may think its crazy but I kinda like to pretend I am a
detective trying to solve a case. When you have the right attitude and
fun, you will pick up fast. This way you will basically learn
everything. Books are good but just don't get sucked into everything. I
discovered that in real programming life, 80% of what you apply comes
from the 20% of the knowledge you've learn. Just my n cents worth.

Pardon my political incorrect grammar if any, as I am not a native
english speaker.


Mark Sargent wrote:
> Hi All,
>
> I'm taking the plunge into Python. I'm currently following this tutorial,
> http://docs.python.org/tut/
> I am not a programmer in general, although I've learnt a bit of bash
> scripting and some php/asp. I want to get into python to use it for
> Linux/Unix related stuff. A question I have, is, those of you who use it
> for the same things, what do you primarily use it for. Could you show me
> some examples.? I find the hardest thing with programming, is not
> remember the syntax/logic etc, but, when to use it. Perhaps that is also
> a personal thing, but, I'd love to see some basic examples out there.
> Cheers.
> 
> Mark Sargent.



From whereU at now.com  Tue May 31 01:57:39 2005
From: whereU at now.com (Eric Pederson)
Date: Mon, 30 May 2005 21:57:39 -0800
Subject: Just remember that Python is sexy
In-Reply-To: <1116899839.323185.58350@g49g2000cwa.googlegroups.com>
References: <1116899839.323185.58350@g49g2000cwa.googlegroups.com>
Message-ID: <20050530215739.1464717829.whereU@now.com>

> I often can't remember that to remove spaces from a string whether it's
> strip() or trim(), and when finding patterns with the re library
> whether it's find() or search() and when iterating over key, values of
> a dictionary whether it's items() or entries().
> But then I remember that Python is "sexy".
> It is sexier to strip() than to trim().
> You do a strip search() not a find() search.
> And you remove items() of clothing and not entries() of clothing.


Genius!  I will never perplex myself with string_foo.trim() again. (I do forget)

I recommend this be adopted as a naming standard for Python methods:

    "The method name should have a sexy connotation"












Eric Pederson
http://www.songzilla.blogspot.com
:::::::::::::::::::::::::::::::::::
domainNot="@something.com"
domainIs=domainNot.replace("s","z")
ePrefix="".join([chr(ord(x)+1) for x in "do"])
mailMeAt=ePrefix+domainIs
:::::::::::::::::::::::::::::::::::



From glauco.silva at cenpra.gov.br  Tue May  3 07:54:55 2005
From: glauco.silva at cenpra.gov.br (Glauco Silva)
Date: Tue, 3 May 2005 08:54:55 -0300
Subject: problem in the compiler ?
References: <338366A6D2E2CA4C9DAEAE652E12A1DE025204C3@au3010avexu1.global.avaya.com>
Message-ID: <006b01c54fd6$ec04a450$e87290c8@piau>

I?m sorry if i don?t write correct.
My code is like this:

MyClass()

class MyClass:
     def __init__(self):
         btn = RadioButton(command=self.Function)
     def Function(self):
         print "Enter in the function"

python : 2.3.5
os: win 2K

When a do this, the function 'Function' is call. And i don?t want this.
What?s wrong ?
Thank you
Glauco

----- Original Message ----- 
From: "Delaney, Timothy C (Timothy)" <tdelaney at avaya.com>
To: "Glauco Silva" <glauco.silva at cenpra.gov.br>; <python-list at python.org>
Sent: Monday, May 02, 2005 8:50 PM
Subject: RE: problem in the compiler ?


Glauco Silva wrote:

> when i creat a RadioButton and put a command = self.Function , this
> function is called in the creation of RadioButton. It?s right this or
> it?s wrong ?

http://www.catb.org/~esr/faqs/smart-questions.html

I'm pretty sure I can guess exactly what the problem is. I suspect your code
looks somewhat like:

    btn = RadioButton(command=self.Function())

Follow the instructions in the above link and you should be able to work out
why this is wrong.

If I've failed to read your mind correctly, the above link should also teach
you how to make it easier for me to do so.

Tim Delaney




-- 
No virus found in this outgoing message.
Checked by AVG Anti-Virus.
Version: 7.0.308 / Virus Database: 266.11.1 - Release Date: 2/5/2005



From tim.golden at viacom-outdoor.co.uk  Wed May 11 08:55:38 2005
From: tim.golden at viacom-outdoor.co.uk (Tim Golden)
Date: Wed, 11 May 2005 13:55:38 +0100
Subject: Interactive shell for demonstration purposes
Message-ID: <9A28C052FF32734DACB0A288A3533991EBB7FD@vogbs009.gb.vo.local>

[Brian Quinlan]
| 
| Can anyone recommend a Python interactive shell for use in 
| presentations?
| 
| Ideal characteristics (priority order):
| o configurable font size
| o full screen mode
| o readline support
| o syntax coloring
| 
| I've tried ipython but, since it runs inside a console 
| window, and the 
| console window has a limited number of selectable fonts, it doesn't 
| work terribly well.
| 
| I've seen presentations using some sort of PyGame implemented shell. 
| Does anyone have an information on that?

Warning: untested response.

Since I remembered that Michael Hudson had done such
a thing once, I Googled and came across this:

http://codespeak.net/py/current/doc/execnet.html

which might get you started.

TJG

________________________________________________________________________
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From dstamsta at aol.com  Sat May 14 23:19:14 2005
From: dstamsta at aol.com (dstamsta at aol.com)
Date: Sun, 15 May 2005 03:19:14 GMT
Subject: Transparenz ist das Mindeste
Message-ID: <ef7f81b.aa240291@aol.com>

Lese selbst:
http://www.npd.de/npd_info/deutschland/2005/d0405-39.html


From rbt at athop1.ath.vt.edu  Thu May 26 08:12:08 2005
From: rbt at athop1.ath.vt.edu (rbt)
Date: Thu, 26 May 2005 08:12:08 -0400
Subject: urllib2 and SSL
In-Reply-To: <1117085151.968298.160740@f14g2000cwb.googlegroups.com>
References: <d73erd$pjm$1@solaris.cc.vt.edu>
	<1117085151.968298.160740@f14g2000cwb.googlegroups.com>
Message-ID: <d74eeo$hu5$1@solaris.cc.vt.edu>

flamesrock wrote:
> don't you need to install openSSL?
> 
> I'm not sure.
> 

How does IE and Firefox handle SSL??? I didn't install anything for them 
to work.


From martin at v.loewis.de  Tue May 17 14:21:45 2005
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Tue, 17 May 2005 20:21:45 +0200
Subject: Windows distribution suggestions?
In-Reply-To: <7x3bsmfjdg.fsf_-_@ruckus.brouhaha.com>
References: <7x3bsmfjdg.fsf_-_@ruckus.brouhaha.com>
Message-ID: <428a363a$0$7410$9b622d9e@news.freenet.de>

Paul Rubin wrote:
> My app contains three different programs (say alice.py, bob.py, and
> carol.py) that need to be independently launchable, and a dozen or so
> other .py files that get imported into those first three.  What I'd
> really really like is to make a single installer called (say)
> "app.exe".  Launching app.exe should completely install Python, unpack
> all the necessary modules, and make three icons (alice, bob, carol) on
> the desktop.

It's not clear to me whether you really want to install a full version
of Python on the target machine; py2exe and Co. incorporate the minimum
subset of Python and ship this each time you make a distribution. So
Python is not installed on the target machine on its own.

In principle, it is possible to create an installer that first installs
Python (with entries in the start menu and all), and then installs your
own application.

If this is what you want, I would personally go with .msi instead of
using .exe. It can do "nested installs", where you can launch
the standard python-2.4.msi from your own MSI file. It also supports
"patch updates", where you replace the files that have changed on
the target machine, through a patch MSI.

The tricky part is to find a good authoring tool for .msi. I would
personally use my own Python library, but that requires to dig
into the MSI details.

Regards,
Martin


From skip at pobox.com  Tue May 24 10:16:49 2005
From: skip at pobox.com (Skip Montanaro)
Date: Tue, 24 May 2005 09:16:49 -0500
Subject: reg python related job searching
In-Reply-To: <20050524105711.89895.qmail@web8405.mail.in.yahoo.com>
References: <20050524105711.89895.qmail@web8405.mail.in.yahoo.com>
Message-ID: <17043.14161.941526.249039@montanaro.dyndns.org>


    praba> Can any one guide me how to get python related jobs?

You mean a source of job postings?  If so, try the Python Jobs Board:

    http://www.python.org/Jobs.html

Skip


From philippe at philippecmartin.com  Sat May  7 09:47:34 2005
From: philippe at philippecmartin.com (Philippe C. Martin)
Date: Sat, 07 May 2005 13:47:34 GMT
Subject: hard memory limits
References: <d5f9jl$k6d$1@domitilla.aioe.org>	<mailman.88.1115374567.29826.python-list@python.org>	<d5gphu$hij$1@domitilla.aioe.org>
	<mailman.115.1115419109.29826.python-list@python.org>
	<d5h4eb$g5v$1@domitilla.aioe.org> <427c258b.868346285@news.oz.net>
	<lpco719k5lttbn1m9jj3shi08q5h62oe45@4ax.com>
	<d5hemh$a83$1@domitilla.aioe.org>
Message-ID: <WF3fe.1617$1o3.165@newssvr12.news.prodigy.com>

Hi,

Why don't you catch the exception and print the trace ?

Regards,

Philippe



Maurice LING wrote:

> John Machin wrote:
>> On Sat, 07 May 2005 02:29:48 GMT, bokr at oz.net (Bengt Richter) wrote:
>> 
>> 
>>>On Sat, 07 May 2005 11:08:31 +1000, Maurice LING <mauriceling at acm.org>
>>>wrote:
>>>
>>>>It doesn't seems to help. I'm thinking that it might be a SOAPpy
>>>>problem. The allocation fails when I grab a list of more than 150k
>>>>elements through SOAP but allocating a 1 million element list is fine in
>>>>python.
>>>>
>>>>Now I have a performance problem...
>>>>
>>>>Say I have 3 lists (20K elements, 1G elements, and 0 elements), call
>>>>them 'a', 'b', and 'c'. I want to filter all that is in 'b' but not in
>>>>'a' into 'c'...
>>>>
>>>>
>>>>>>>a = range(1, 100000, 5)
>>>>>>>b = range(0, 1000000)
>>>>>>>c = []
>>>>>>>for i in b:
>>>>
>>>>...     if i not in a: c.append(i)
>>>>...
>>>>
>>>>This takes forever to complete. Is there anyway to optimize this?
>>>>
>>>
>>>Checking whether something is in a list may average checking equality
>>>with each element in half the list. Checking for membership in a set
>>>should be much faster for any significant size set/list. I.e., just
>>>changing to
>>>
>>>     a = set(range(1, 100000, 5))
>>>
>>>should help. I assume those aren't examples of your real data ;-)
>>>You must have a lot of memory if you are keeping 1G elements there and
>>>copying a significant portion of them. Do you need to do this
>>>file-to-file, keeping a in memory? Perhaps page-file thrashing is part of
>>>the time problem?
>> 
>> 
>> Since when was 1000000 == 1G??
>> 
>> Maurice, is this mucking about with 1M or 1G lists in the same
>> exercise as the "vm_malloc fails when allocating a 20K-element list"
>> problem? Again, it might be a good idea if you gave us a little bit
>> more detail. You haven't even posted the actual *PYTHON* error message
>> and stack trace that you got from the original problem. In fact,
>> there's a possible interpretation that the (system?) malloc merely
>> prints the vm_malloc message and staggers on somehow ...
>> 
>> Regards,
>> John
> 
> This is the exact error message:
> 
> *** malloc: vm_allocate(size=9203712) failed (error code=3)
> *** malloc[489]: error: Can't allocate region
> 
> Nothing else. No stack trace, NOTHING.
> 
> maurice



From Danielnord15 at yahoo.se  Sat May  7 17:22:56 2005
From: Danielnord15 at yahoo.se (Svennglenn)
Date: 7 May 2005 14:22:56 -0700
Subject: Trouble saving unicode text to file
Message-ID: <1115500976.571232.76100@z14g2000cwz.googlegroups.com>

I'm working on a program that is supposed to save
different information to text files.

Because the program is in swedish i have to use
unicode text for ??? letters.

When I run the following testscript I get an error message.

# -*- coding: cp1252 -*-

titel = "???"
titel = unicode(titel)

print "Titel type", type(titel)

fil = open("testfil.txt", "w")
fil.write(titel)
fil.close()


Traceback (most recent call last):
  File "D:\Documents and
Settings\Daniel\Desktop\Programmering\aaotest\aaotest2\aaotest2.pyw",
line 5, in ?
    titel = unicode(titel)
UnicodeDecodeError: 'ascii' codec can't decode byte 0xe5 in position 0:
ordinal not in range(128)


I need to have the titel variable in unicode format because when I
write
??? in a entry box in Tkinkter it makes the value to a unicode
format
automaticly.

Are there anyone who knows an easy way to save this unicode format text
to a file?



From ruach at chpc.utah.edu  Wed May 18 17:23:15 2005
From: ruach at chpc.utah.edu (Matthew Thorley)
Date: Wed, 18 May 2005 15:23:15 -0600
Subject: ElementTree and xsi to xmlns conversion?
Message-ID: <d6gbo5$fm6$1@vegh.ks.cc.utah.edu>

Why does ElementTree.parse convert my xsi to an xmlns?

When I do this
from elementtree import ElementTree

# Sample xml
mgac ="""
<mgac xmlns="http://www.chpc.utah.edu/~baites/mgacML"
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xsi:schemaLocation="http://www.chpc.utah.edu/~baites/mgacML
http://www.chpc.utah.edu/~baites/mgacML/mgac.xsd"><cluster
name="Si4H"></cluster></mgac>
"""

xml = ElementTree.fromstring(mgac)
ElementTree.tostring(xml)

I get this
'<ns0:mgac ns1:schemaLocation="http://www.chpc.utah.edu/~baites/mgacML
http://www.chpc.utah.edu/~baites/mgacML/mgac.xsd"
xmlns:ns0="http://www.chpc.utah.edu/~baites/mgacML"
xmlns:ns1="http://www.w3.org/2001/XMLSchema-instance"><ns0:cluster
name="Si4H" /></ns0:mgac>'


The xsi is gone and has been replaced by a new xmlns, which is also NOT
inherited by the child elements.

ElementTree.tostring(xml.getchildren()[0])

'<ns0:cluster name="Si4H"
xmlns:ns0="http://www.chpc.utah.edu/~baites/mgacML" />'

If some one could please explain where I'm off I'd really appreciate it.
I need to use xsi: to validate the document, and I'm not sure how to
pass it on to the children when I reformat the doc.

Thanks
-Matthew


From hsuanyeh at yahoo.com  Mon May 30 22:51:39 2005
From: hsuanyeh at yahoo.com (Hsuan-Yeh Chang)
Date: Tue, 31 May 2005 02:51:39 GMT
Subject: Finite Element Solver for Python?
Message-ID: <%iQme.14897$IX4.1981@twister.nyc.rr.com>

Dear All,

Anyone knows a good Finite Element Solver for python programer?

Thanks!

HYC


From bokr at oz.net  Sun May 15 14:43:30 2005
From: bokr at oz.net (Bengt Richter)
Date: Sun, 15 May 2005 18:43:30 GMT
Subject: string.lstrip stripping too much?
References: <mailman.26.1116176368.15315.python-list@python.org>
Message-ID: <4287957d.4178678@news.oz.net>

On Sun, 15 May 2005 15:24:25 +0200, "joram gemma" <joram.gemma at pandora.be> wrote:

>Hello,
>
>on windows python 2.4.1 I have the following problem
>
>>>> s = 'D:\\music\\D\\Daniel Lanois\\For the beauty of Wynona'
>>>> print s
>D:\music\D\Daniel Lanois\For the beauty of Wynona
>>>> t = 'D:\\music\\D\\'
>>>> print t
>D:\music\D\
>>>> s.lstrip(t)
>'aniel Lanois\\For the beauty of Wynona'
>>>> 
>
>why does lstrip strip the D of Daniel Lanois also?
>
Because the lstrip argument is a set of characters in the form of
a string, not a single substring to replace from the left. Note:
(repeating your example to start with)

 >>> s = 'D:\\music\\D\\Daniel Lanois\\For the beauty of Wynona'
 >>> print s
 D:\music\D\Daniel Lanois\For the beauty of Wynona
 >>> t = 'D:\\music\\D\\'
 >>> print t
 D:\music\D\
 >>> s.lstrip(t)
 'aniel Lanois\\For the beauty of Wynona'

Now we make an equivalent lstrip argument from your t argument
 >>> t2 = ''.join(sorted(set(t)))
 >>> print t2
 :D\cimsu

Note that there is only one of each character in t2 (e.g. 'D' and '\\')
And the result is the same for t and t2:

 >>> s.lstrip(t)
 'aniel Lanois\\For the beauty of Wynona'
 >>> s.lstrip(t2)
 'aniel Lanois\\For the beauty of Wynona'

If you want to replace an exact prefix, a regex could be a simple way
to get the startswith check and replace in one whack.

Regards,
Bengt Richter


From Holzmayer.Bernhard at deadspam.com  Tue May 17 07:33:25 2005
From: Holzmayer.Bernhard at deadspam.com (Bernhard Holzmayer)
Date: Tue, 17 May 2005 13:33:25 +0200
Subject: query progress bar
References: <mailman.65.1116284481.8733.python-list@python.org>
	<1116286913.207477.219180@g44g2000cwa.googlegroups.com>
	<mailman.69.1116288978.8733.python-list@python.org>
Message-ID: <d6ckkp$ttg$1@news01.versatel.de>

Timothy Smith wrote:

> i'm using pypgsql

Assuming you work with PostgreSQL, then:
You know the EXPLAIN command?

EXPLAIN will give you a very accurate estimation for the expense for the
query. 
(You'll have to find out what cost means in terms of your progress.)

I did never try this using pypgsql, but if it works, this might be your
solution...

The precision of EXPLAIN, however, depends on the modifications since the 
last time you ran VACUUM on the DB.
If the size of tables or indices didn't suffer considerable changes since
then, the estimation should be quite accurate.

Bernhard



From duncan.booth at invalid.invalid  Wed May 18 09:33:04 2005
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 18 May 2005 13:33:04 GMT
Subject: super() and automatic method combination
References: <7xvf5gra9z.fsf_-_@ruckus.brouhaha.com>
Message-ID: <Xns965A94007A1BBduncanbooth@127.0.0.1>

Paul Rubin wrote:

> I'm trying the super() function as described in Python Cookbook, 1st
> ed, p. 172 (Recipe 5.4).
> 
>     class A(object):
>         def f(self):
>                 print 'A'
> 
> 
>     class B(object):
>         def f(self):
>                 print 'b'
> 
> 
>     class C(A,B):
>         def f(self):
Typo? 'c' should be 'C' in:
>                 super(c,self).f()
>                 print 'C'
> 
>     def test(cls):
>        x = cls()
>        x.f()
> 
>     test(C)
> 
> I have the impression that this is supposed to call the f method
> in both A and B, so it should print
>    A
>    B
>    C
> or maybe
>   B
>   A
>   C
> depending on the resolution order.  However, it only calls A.f and not
> B.f. 

You misunderstand. A single call to super only calls the next method in the 
chain. You have to include calls to super at all levels except for the 
ultimate base class.

> 
> I also notice that if I say
> 
> 
>     class B(object):
>         def f(self):
>             super(B,self).f()
>             print 'b'
> 
> then 
>   test(B)
> raises an exception since B has no superclass with an f method.  That
> doesn't seem like such a good thing necessarily.

You have to terminate the chain somehow. e.g.

class MyBase(object):
    	def f(self):
    	   print "MyBase"

class A(MyBase):
    def f(self):
        super(A, self).f()
        print "A"
    	...
class B(MyBase):
    def f(self):
        super(B, self).f()
        print "B"
    	...

> 
> Anyway, is there a preferred way of writing this example so that C.f
> automatically calls both A.f and B.f?

The trick is that C.f only calls A.f, but A.f needs to end up calling B.f 
when it is used in a C.



From andre.roberge at gmail.com  Fri May  6 18:58:35 2005
From: andre.roberge at gmail.com (=?ISO-8859-1?Q?Andr=E9_Roberge?=)
Date: Fri, 06 May 2005 19:58:35 -0300
Subject: ANN: RUR-PLE version 0.8
Message-ID: <d5gsdq$56q$1@sea.gmane.org>

RUR-PLE is a "Python Learning Environment".

It contains four main elements:
1. Lessons viewable within an incorporated browser. Version 0.8 includes 
25 lessons introducing Python.
2. A "robot world" with a robot that can accomplish tasks through Python 
programs.
3. A built-in interpreter which can be used to play with Python
4. A built-in file editor which can be used for futher Python explorations.

Version 0.8 includes a bilingual (English or French) interface.
Only English lessons are included.

RUR-PLE requires wxPython.  It can be found on sourceforge:

https://sourceforge.net/project/showfiles.php?group_id=125834

RUR-PLE has been inspired from GvR (Guido van Robot), also available on 
sourceforge.  RUR-PLE can be though of as GvR++.

The relatively large size of the download is due to the many graphical 
elements included with the lessons.
--------
Andr? Roberge



From mwm at mired.org  Thu May 19 18:46:45 2005
From: mwm at mired.org (Mike Meyer)
Date: Thu, 19 May 2005 17:46:45 -0500
Subject: Convert from numbers to letters
References: <1116511005.900715.107260@o13g2000cwo.googlegroups.com>
	<1116519193.037429.93560@o13g2000cwo.googlegroups.com>
	<1116529140.470352.129690@z14g2000cwz.googlegroups.com>
	<mailman.224.1116530388.8733.python-list@python.org>
	<86wtpvymnt.fsf@guru.mired.org>
	<1116541322.860087.319940@f14g2000cwb.googlegroups.com>
Message-ID: <86br76zve2.fsf@guru.mired.org>

"rh0dium" <sklass at pointcircle.com> writes:
> Now can you reverse this process tuple2coord??

You didn't provide enough context to know who you're asking, but
here's the inverse of my coord2tuple2 function:

from string import uppercase
def tuple2coord(number):
    if 1 > number or number > 26:
       raise ValueError("tuple2coord expected a number between 1 and 26, got '%s'" % number)
    return (" " + uppercase)[number]

    <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From duncan.booth at invalid.invalid  Thu May 26 04:25:44 2005
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 26 May 2005 08:25:44 GMT
Subject: Just remember that Python is sexy
References: <1116899839.323185.58350@g49g2000cwa.googlegroups.com>
	<O9v*jQrPq@news.chiark.greenend.org.uk>
	<v8adndXwp-hF4gnfRVn-ig@powergate.ca>
	<du7is16wiug.fsf@mozart.cc.tut.fi>
Message-ID: <Xns96625FD0B248duncanbooth@127.0.0.1>

Ville Vainio wrote:

>>>>>> "Peter" == Peter Hansen <peter at engcorp.com> writes:
> 
>     Peter> Sion Arrowsmith wrote:
>     >> But can you come up with a method for remembering which way
>     >> round str.find() and str.index() are?
> 
>     Peter> Don't use "str" and you won't have anything to remember:
> 
>     Peter> 'foo bar baz'.find('spam')
>     Peter> 'spanish inquisition'.index('parrot')
> 
> But which one raises an exception, and which one returns -1?
> 
The name index implies it returns something you can use as an index to get 
at the substring.

In other words you can always assume that the following expression is True 
(if it has any value at all) when you use the result of index as an index:

    s[s.index(t):].startswith(t)

The name 'find' doesn't really imply anything about the result, so it can 
return pretty much any crud such as -1.


From tdelaney at avaya.com  Wed May 18 19:15:33 2005
From: tdelaney at avaya.com (Delaney, Timothy C (Timothy))
Date: Thu, 19 May 2005 09:15:33 +1000
Subject: Is Python suitable for a huge, enterprise size app?
Message-ID: <338366A6D2E2CA4C9DAEAE652E12A1DE02520532@au3010avexu1.global.avaya.com>

Ivan Van Laningham wrote:

> What you're going to run into are two major stumbling blocks.  One,
> Python's got no credibility with management types unless the
> credibility's already there.  "Python?  Never heard of it.  Tell me
> about it.  ...   Oh, it's interpreted, is it?  Interesting."  You can
> see Python going down the sewer pipes, right on their faces.  Two,
> security.  "This python sounds pretty interesting.  Tell me about the
> security.  How can we prevent people from stealing our source code,
> which we just spent millions developing?  ...  Hmm, trust the
> developers out there not to peek?  Oh, sure, let's use it."  (True,
> there are ways around the second, but you're going to have to talk
> _very_ fast and have ALL the answers before the management type gets
> to his/her office and shuts the door in your face and on your idea.)

There is a good answer to both of these ... Pyrex (second time I've
recommended it today :)

http://www.cosc.canterbury.ac.nz/~greg/python/Pyrex/

I recently had a situation here at work where a utility written in
Python needed to start going out to customers. The simplest solution was
to use Pyrex to create extension modules from the Python files. With
very minimal changes and an appropriate build script, everything worked.

The disadvantages are that for the Pyrex files you are limited to a
subset of Python features - in particular, things like list
comprehensions, generators, etc don't work. OTOH, it's very easy to put
that type of thing in a Python module and call it from a Pyrex module. A
mixture of Python and Pyrex is about the best of both worlds (esp. if
you add psyco to the mix).

Tim Delaney


From jeffelkins at earthlink.net  Fri May 20 23:57:01 2005
From: jeffelkins at earthlink.net (Jeff Elkins)
Date: Fri, 20 May 2005 23:57:01 -0400
Subject: SQL Query via python
Message-ID: <200505202357.01579.jeffelkins@earthlink.net>

I'm attempting to pass an SQL query via the console:

$ ./getbd month 05

The arguments get seem to passed correctly (via print statements) and then:

    cursor.execute ("""
                     SELECT name, month, day ,category, city FROM bday
                     WHERE %s = %s
                   """,(arg1,arg2))

No results. However, if I hardcode the WHERE argument with a field name:

 cursor.execute ("""
                     SELECT name, month, day ,category, city FROM bday
                     WHERE month = %s
                   """,(arg2))

It works.

How can I code the left side of the WHERE clause so I can pass an arbitrary 
field name to search on?


Thanks,

Jeff Elkins




From ckwiguno at gmail.com  Sun May  1 22:10:19 2005
From: ckwiguno at gmail.com (custard_pie)
Date: 1 May 2005 19:10:19 -0700
Subject: Displaying formatted - data with TKinter
Message-ID: <1114999819.728730.54930@o13g2000cwo.googlegroups.com>

Hi,..I found it difficult to display data from a dictionary using GUI.
What widget should I use? I tried using text widget, but I couldn't get
the display I want. I need the display to look like this

file name       size       age            location
====================================================
fdssfdfsa         30        34            safasfafsfdsa
asdfafdsafs       45        56            asdffdsafsd

And I'm getting the display from inside a dictionary that holds list as
its value. Any suggestion on what I should use to display the data in
that format??



From pinard at iro.umontreal.ca  Thu May 12 16:25:43 2005
From: pinard at iro.umontreal.ca (=?iso-8859-1?Q?Fran=E7ois?= Pinard)
Date: Thu, 12 May 2005 16:25:43 -0400
Subject: pyvm -- faster python
In-Reply-To: <7xfyws8cwy.fsf@ruckus.brouhaha.com>
References: <vu38l2-k5v.ln1@home.rogerbinns.com>
	<7xvf5qbir1.fsf@ruckus.brouhaha.com>
	<nt98l2-1e.ln1@home.rogerbinns.com>
	<7xpsvymlse.fsf@ruckus.brouhaha.com>
	<1115791624.856252.247890@z14g2000cwz.googlegroups.com>
	<7x1x8el18e.fsf@ruckus.brouhaha.com>
	<3eg2vnF2psplU1@individual.net>
	<7xis1pqdt0.fsf@ruckus.brouhaha.com>
	<mailman.466.1115908386.29826.python-list@python.org>
	<7xfyws8cwy.fsf@ruckus.brouhaha.com>
Message-ID: <20050512202543.GA13810@phenix.progiciels-bpi.ca>

[Paul Rubin]

> Fran?ois Pinard <pinard at iro.umontreal.ca> writes:
>
> > Deep down, why or how not having a [traditional, to-native-code]
> > compiler is a deficiency for CPython?  We already know that such a
> > beast would not increase speed so significantly, while using much
> > more memory.

> I'd say the opposite.  The 4x speedup from Psyco is quite significant.
> The speedup would be even greater if the language itself were more
> compiler-friendly.

Psyco is not a traditional compiler.  Compilation occurs at run-time, as
typing information is not available without observation.

> > So far, it seems that the only way to get speed is to attach static
> > type information to some variables.

> No of course not, there's quite a bit of overhead in interpretation in
> general.  Plus, having to do a dictionary lookup for 'bar' in every
> call like foo.bar() adds overhead and I don't think I'd call fixing
> that as similar to adding static type info.

The dictionary lookup does not occur for local variables.  Changes are
planned in Python so lookups may be avoided in a few cases of global
variables.  But until (and despite!) such changes occur, compilation
does not buy you much, here.  This has been much studied and debated.

> > Some compilation avenues do it through information added either in
> > Python source code or in extraneous declarative files, other
> > approaches do it by delaying compilation until such information is
> > discovered at run-time.

> Also, lots of times one can do type inference at compile time.

Yes, particularily in simple or small programs.  I vaguely remember
that the unborn Viper (or Vyper?) was promising compile time type
inference.  It seems that so far, in many years, no one really succeeded
in demonstrating a definite advantage in this direction, at least, not
enough for the community to follow in.

> > The former taints the purity of real CPython as the only source.

> I don't understand this.  What purity?  Why is real CPython the
> only source?  There are dozens of C compilers and none of them is
> the "only source".  Why should Python be different?

Because it is.  There are not dozens of Python compilers.  A few, maybe.

Pyrex gives me a lot of speed, given I taint my Python sources with
cdefs, ctypes, etc.  Oh, I'm absolutely happy with Pyrex when I starve
for speed, but I know and you know that we are not writing pure Python
then.  And if, for not touching sources, one supplements them with
separate declarative files, my Python code may look pure, but I have to
maintain those files as well, and Python is not my only source anymore.

So, to get back to the origin of our argument, I'm still not tempted
to think that Python not having a compiler makes it deficient, because
having a compiler (at least in the traditional acceptation of the term)
would not buy it much enough.

-- 
Fran?ois Pinard   http://pinard.progiciels-bpi.ca


From exarkun at divmod.com  Sun May  1 23:12:17 2005
From: exarkun at divmod.com (Jp Calderone)
Date: Mon, 02 May 2005 03:12:17 GMT
Subject: Debugging threaded Python code
In-Reply-To: <427595ee$1@duster.adelaide.on.net>
Message-ID: <20050502031217.15422.882617087.divmod.quotient.12858@ohm>

On Mon, 02 May 2005 12:52:30 +1000, Derek Thomson <derek at hiredgoons.org> wrote:
>Hi,
>
>I frequently have to debug some fairly tricky Python multi-threaded
>code, and I need some help using the debugger to help me diagnose the
>problems when they occur. Yes, I know that the best option with threaded
>code that is problematic is to rewrite it, but that's not really an
>option that I have (right now).
>
>What would really help me is to be able to see a list of all the
>currently active threads, and the Python stack trace for each. At least
>then I could see where the failures are happening - deadlocks in
>particular. I have to spend a lot of time right now just to reach that
>point.
>
>I spent some time trying to achieve this with the Python debugger and
>couldn't. This has been bugging me for quite a while now, and I'm
>probably just missing the obvious as usual. Is there some simple way I
>can do this?
>

  I saw an awesome demo of Komodo's debugger at Linux World this year.  I still haven't had an excuse to mess around with its support of threads myself, but it seemed to handle them quite niecly.

    http://aspn.activestate.com/ASPN/Downloads/Komodo/RemoteDebugging

  Jp



From eurleif at ecritters.biz  Tue May  3 11:32:07 2005
From: eurleif at ecritters.biz (Leif K-Brooks)
Date: Tue, 03 May 2005 15:32:07 GMT
Subject: Documenting Python code.
In-Reply-To: <1115128200.628997@hqnntp01.autodesk.com>
References: <1115128200.628997@hqnntp01.autodesk.com>
Message-ID: <XPMde.3290$5I5.367167@newshog.newsread.com>

Isaac Rodriguez wrote:
> Are there any standarized ways of documenting Python code? When I check the 
> __doc__ attribute of the standard modules, the results are kind of plain. Is 
> everyone using this style?

See <http://epydoc.sourceforge.net/>. Epydoc has a simple language for 
documentation that can markup type information for paramaters and other 
stuff like that.


From http  Thu May 12 03:16:22 2005
From: http (Paul Rubin)
Date: 12 May 2005 00:16:22 -0700
Subject: tkinter puzzler
Message-ID: <7xzmv0hq2h.fsf_-_@ruckus.brouhaha.com>

I have a gui with a bunch of buttons, labels, the usual stuff.  It
uses the grid manager:

   gui = Frame()
   gui.grid()
   gui.Label(....).grid()  # put some widgets into the gui
   ...    # more widgets

Now at the the very bottom of the gui, I want to add two more buttons,
let's say "stop" and "go".  I want "stop" to appear in the gui's lower
left corner and "go" to appear in the gui's lower right corner.
Suppose that up to now, row 16 is the last row in the gui.  Then this
works:

    Button(gui, text="stop").grid(sticky=W)   # starts row 17
    Button(gui, text="go").grid(row=17, column=1, sticky=E)

But I don't really want that hardwired row number and I don't want to
keep counting rows and adjusting stuff if I stick new rows in the gui.
So I try the obvious, make one Frame widget containing both new buttons:
    stopgo = Frame(gui)
    Button(stopgo, "stop").grid(sticky=W)
    Button(stopgo, "go").grid(sticky=E)

and try to stretch it across the bottom row of the gui:

    stopgo.grid(sticky=E+W)

However, the buttons keep coming out centered in the gui's bottom row
pretty much no matter what I do (I've tried all sorts of combinations).

Am I missing something?  I'm not a tkinter whiz and this stuff is
pretty confusing.  I did come up with an ugly workaround that I'll
spare you the agony of seeing, but there should be a natural way to do
this.

Thanks for any advice.


From "myname" at example.invalid  Thu May 26 08:33:45 2005
From: "myname" at example.invalid (VK)
Date: Thu, 26 May 2005 14:33:45 +0200
Subject: Access from one class to methode of other class
Message-ID: <3flu22F8g4u4U1@news.dfncis.de>

Hi, all!

In my programm i have to insert a variable from class 2 to class 1 and I 
get error NameError: global name 'd' is not defined. How do I get access 
to d.entry.insert() method of class 1

class 1:
    self.entry = Entry(self.entryframe)
    self.entry.pack()

    self.button = Button(command = self.callclass2window)

    def callclass2window
	c = 2()


class 2:
    def ins(self)
	d.entry.insert(variable)


d = 1()


From tim.peters at gmail.com  Tue May 24 11:14:32 2005
From: tim.peters at gmail.com (Tim Peters)
Date: Tue, 24 May 2005 11:14:32 -0400
Subject: [ZODB-Dev] ZODB memory problems (was: processing a Very Largefile)
Message-ID: <1f7befae0505240814d17d61f@mail.gmail.com>

[Jeremy Hylton]
> ...
> It looks like your application has a single persistent instance -- the
> root ExtendedTupleTable -- so there's no way for ZODB to manage the
> memory.  That object and everything reachable from it must be in memory
> at all times.

Indeed, I tried running this program under ZODB 3.4b1 on Windows, and
about 4% of the way done it dies during one of the subtransaction
commits, with a StackError:  the object is so sprawling that a
megabyte C stack is blown by recursion while trying to serialize it.


From jerf at jerf.org  Wed May  4 21:40:14 2005
From: jerf at jerf.org (Jeremy Bowers)
Date: Wed, 04 May 2005 21:40:14 -0400
Subject: How to write this regular expression?
References: <mailman.139.1115189526.6583.python-list@python.org>
	<maednQfrx_iwL-XfRVn-hA@powergate.ca>
	<mailman.159.1115209494.6583.python-list@python.org>
	<pan.2005.05.04.18.44.37.48366@jerf.org>
	<mailman.31.1115256623.29826.python-list@python.org>
Message-ID: <pan.2005.05.05.01.40.14.92096@jerf.org>

On Thu, 05 May 2005 09:30:21 +0800, could ildg wrote:
> Jeremy Bowers wrote:
>> Python 2.3.5 (#1, Mar  3 2005, 17:32:12) [GCC 3.4.3  (Gentoo Linux
>> 3.4.3, ssp-3.4.3-0, pie-8.7.6.6)] on linux2 Type "help", "copyright",
>> "credits" or "license" for more information.
>> >>> import re
>> >>> m = re.compile("\d+")
>> >>> m.findall("344mmm555m1111")
>> ['344', '555', '1111']
>>
>> (I just tried to capture the three numbers by adding a parentheses set
>> around the \d+ but it only gives me the first. I've never tried that
>> before; is there a way to get it to give me all of them? I don't think
>> so, so two REs may be required after all.)

> You can capture each number by using group, each group can have a name.

I think you missed out on what I meant:

Python 2.3.5 (#1, Mar  3 2005, 17:32:12) 
[GCC 3.4.3  (Gentoo Linux 3.4.3, ssp-3.4.3-0, pie-8.7.6.6)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import re
>>> m = re.compile(r"((?P<name>\d+)_){1,3}")
>>> match = m.match("12_34_56_")
>>> match.groups("name")
('56_', '56')
>>> 

Can you also get 12 & 34 out of it? (Interesting, as the non-named groups
give you the *first* match....) 

I guess I've never wanted this because I usually end up using "findall"
instead, but I could still see this being useful... parsing a function
call, for instance, and getting a tuple of the arguments instead of all of
them at once to be broken up later could be useful.


From thomas at thomas-lotze.de  Tue May 10 15:26:15 2005
From: thomas at thomas-lotze.de (Thomas Lotze)
Date: Tue, 10 May 2005 21:26:15 +0200
Subject: Python Graphing Utilities.
References: <-dadnS0X7IVccR3fRVn-uQ@entouch.net>
Message-ID: <pan.2005.05.10.19.26.15.721820@ID-174572.user.uni-berlin.de>

Kenneth Miller wrote:

>     I am new to Python and i was wondering what graphing utlities would be
> available to me. I have already tried BLT and after weeks of unsuccesful
> installs i'd like to find something else. Anything someone would
> recommend?

You might also want to check out PyX: <http://pyx.sf.net/>.

-- 
Thomas




From elrei69 at yahoo.es  Tue May 24 11:02:44 2005
From: elrei69 at yahoo.es (Ximo)
Date: Tue, 24 May 2005 17:02:44 +0200
Subject: execution error
Message-ID: <3fgu0fF7l5o5U1@individual.net>

>>    Ximo> My question is how can show the execution error whitout exit  of 
>> the program, showing it in the error output as


>> Skip> You need to catch ZeroDivisionError.  Here's a trivial example:


>>    >>> try:
>>    ...   6/0
>>    ... except ZeroDivisionError:
>>    ...   print "whoops! divide by zero..."
>>    ...
>>    whoops! divide by zero...


 But I execute the operation in the else:

    try:
       except ZeroDivisionError:
       print "whoops! divide by zero..."
    else:
       execute( )

 The exeption is produced after. 




From martin.witte at gmail.com  Sat May  7 18:53:44 2005
From: martin.witte at gmail.com (wittempj@hotmail.com)
Date: 7 May 2005 15:53:44 -0700
Subject: Newbie : checking semantics
In-Reply-To: <1115503520.392357.230620@f14g2000cwb.googlegroups.com>
References: <1115503520.392357.230620@f14g2000cwb.googlegroups.com>
Message-ID: <1115506424.595911.76160@z14g2000cwz.googlegroups.com>

I do not know of a check like the one you desire. But you always can
use some clever testing, e.g. facilitated with the unittest module to
prevent situations like yours, see
http://docs.python.org/lib/module-unittest.html



From tismer at stackless.com  Mon May 23 05:32:06 2005
From: tismer at stackless.com (Christian Tismer)
Date: Mon, 23 May 2005 11:32:06 +0200
Subject: first release of PyPy
In-Reply-To: <du7br728n7o.fsf@mozart.cc.tut.fi>
References: <mailman.264.1116625088.8733.python-list@python.org>	<1116629407.638782.145950@g47g2000cwa.googlegroups.com>	<1116644536.741250.249860@g44g2000cwa.googlegroups.com>	<mailman.279.1116649250.8733.python-list@python.org>	<1116653460.808204.74460@g43g2000cwa.googlegroups.com>	<87mzqpytep.fsf@wilson.rwth-aachen.de>	<7xfywhxerd.fsf@ruckus.brouhaha.com>	<87is1dyru8.fsf@wilson.rwth-aachen.de>	<du7hdgxt4th.fsf@amadeus.cc.tut.fi>	<mailman.303.1116722836.8733.python-list@python.org>
	<du7br728n7o.fsf@mozart.cc.tut.fi>
Message-ID: <4291A316.9080505@stackless.com>

Ville Vainio wrote:

>>>>>>"Christian" == Christian Tismer <tismer at stackless.com> writes:
> 
> 
>     >> PyPy is written in python, if it can be compiled then the programs
>     >> can
>     >> be as well.
> 
>     Christian> Well, this is not really true. PyPy is written in
>     Christian> RPython, a sub-language of Python that is implicitly
>     Christian> defined by "simple and static enough to be compilable".
> 
> Could it be possible to tag some modules in application code as
> RPython-compatible, making it possible to implement the speed critical
> parts in RPython?

Interesting idea.
Especially since we have automatic translation from RPythonic
application code to interpreter level.
Maybe not for now, but I'm cc-ing pypy-dev.

@rpythonic    :-)

-- 
Christian Tismer             :^)   <mailto:tismer at stackless.com>
tismerysoft GmbH             :     Have a break! Take a ride on Python's
Johannes-Niemeyer-Weg 9A     :    *Starship* http://starship.python.net/
14109 Berlin                 :     PGP key -> http://wwwkeys.pgp.net/
work +49 30 802 86 56  mobile +49 173 24 18 776  fax +49 30 80 90 57 05
PGP 0x57F3BF04       9064 F4E1 D754 C2FF 1619  305B C09C 5A3B 57F3 BF04
      whom do you want to sponsor today?   http://www.stackless.com/


From michele.simionato at gmail.com  Tue May  3 01:21:43 2005
From: michele.simionato at gmail.com (Michele Simionato)
Date: 2 May 2005 22:21:43 -0700
Subject: Use case for multiple inheritance (was Re: MRO problems with
	diamond inheritance?)
In-Reply-To: <d55ot3$br3$1@panix2.panix.com>
References: <d53jqq$b88$1@newsg4.svr.pol.co.uk>
	<1115025031.721431.76320@o13g2000cwo.googlegroups.com>
	<d55ot3$br3$1@panix2.panix.com>
Message-ID: <1115097703.061286.213430@z14g2000cwz.googlegroups.com>

AFAIK, the best use case for multiple inheritance is the plugin
pattern,
when you plug in methods in a class according to a given condition.

For instance:

if plugin == "PDF":
    class DocumentGenerator(BaseGenerator, PDFMixin): pass
elif plugin == "PS":
    class DocumentGenerator(BaseGenerator, PSMixin): pass
elif plugin == "HTML":
    class DocumentGenerator(BaseGenerator, HTMLMixin): pass

etc. This is not a bad use case (actually it is good) still I would say
it
is not compelling. I could just add the right methods by hand:

if plugin == "PDF":
    DocumentGenerator = type("DocumentGenerator", (BaseGenerator,),
PDFmethods)
elif plugin == "PS":
    DocumentGenerator = type("DocumentGenerator", (BaseGenerator,),
PSmethods)
elif plugin == "HTML":
    DocumentGenerator = type("DocumentGenerator", (BaseGenerator,),
HTMLmethods)
or use a different design based on composition + delegation.

The problem with MI is that it does not really give anything new that
you cannot do in other ways (at least in a dynamic language such as
Python); OTOH, it is extremely easily abused and makes difficult to
reason about code. Look to what happened to Zope 2!

Adding methods by hand is ugly, people would think twice before doing
that;
OTOH, using mixin is even worse, still it looks cool and people do not
realize how bad it is. Here I speak for personal experience, as you may

imagine, having both read and written MI hierarchies that could have
much better written without MI. Finally, let me say that cooperative
methods are terrible for maintenance. Nowadays, I tend to use MI just
for debugging (yes, a mixing is convenient, if not compelling, for
adding debugging functionality to a class).


              Michele Simionato



From sjmachin at lexicon.net  Mon May 30 17:08:53 2005
From: sjmachin at lexicon.net (John Machin)
Date: Tue, 31 May 2005 07:08:53 +1000
Subject: Unicode Congruence
In-Reply-To: <mailman.260.1117483504.18027.python-list@python.org>
References: <mailman.255.1117477447.18027.python-list@python.org>	<429B6342.6040607@lexicon.net>
	<mailman.260.1117483504.18027.python-list@python.org>
Message-ID: <429b80e5$1@news.eftel.com>

phil top-posted
> Thanks.
> I did search that site but, wow, huge.

Searched how????

1. If you use their own search box, the first hit is U+2A6D CONGRUENT 
WITH DOT ABOVE

The U2A00.pdf entry for U+2A6D does refer back to U+2245


2. The "where is my character" page also says: "You can also do a text 
search in the online Unicode  NamesList."

which gives you:

2A6D	CONGRUENT WITH DOT ABOVE
	x (approximately equal to - 2245)


> That page had no reference to congruence
> and the pdf did not contain the pattern
> congru.

So do your bit towards making the world a better place by e-mailing 
unicode.org and suggesting (1) that the description for 2245 be 
augmented (2) that in general where they have a character named 
"<whizzbang> WITH <add-on(s)>" it would be a good idea to check that the 
basic <whizzbang> character is actually so described.


> But I'll have some better ideas how to search next
> time.
> thanx
> I used \u2245 btw

Cheers,
John


From hyu163 at gmail.com  Thu May 19 05:27:34 2005
From: hyu163 at gmail.com (hong Yu)
Date: 19 May 2005 02:27:34 -0700
Subject: What's the difference between str and 'hello' ?
Message-ID: <ffa7ec1b.0505190127.122b51a8@posting.google.com>

I am new to python.  
I was confused:

>>> a = list('hello')

>>> a
['h', 'e', 'l', 'l', 'o']

I want to combine the items in the list into a string.
So:

>>> ''.join(a)
'hello'

but:

>>> str.join(a)
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
TypeError: descriptor 'join' requires a 'str' object but received a 'list'

So why TypeError raised? 
and 
What's the difference between str and 'hello' ?

Thanks a lot.


From gsakkis at rutgers.edu  Mon May  2 21:10:59 2005
From: gsakkis at rutgers.edu (George Sakkis)
Date: 2 May 2005 18:10:59 -0700
Subject: Inspect Python Classes for instance data information
References: <1115081401.464719.142070@o13g2000cwo.googlegroups.com>
Message-ID: <1115082659.183647.141540@f14g2000cwb.googlegroups.com>

"Tim Henderson" <tim.tadh at gmail.com> wrote:
> Hello
>
> I want to creat a program that can inspect a set of classes that i
have
> made and spit out a savable version of these classes. To do this I
need
> to be able to inspect each class and get all of its instance data as
> well as information about a particular meathod. This is what i want
it
> to do:
>
>
> class song:
>     def __init__(self, name, artist, album, published):
>         self.name = name
>         self.artist = artist
>         self.album = album
>         self.published = published
>     def build(self, name, artist, album, published):
>         self.name = name
>         self.artist = artist
>         self.album = album
>         self.published = published
>
> #now what i want to do with this dummy class
> s = song("12:51", "The Strokes", "Room on Fire", 2005)
> print getTextVersion(s)
>
> <class>
>     <name>song</name>
>     <data>
>         <attribute>
>             <date_type>string</data_type>
>             <value>12:51</value>
>             <attribute_name>name</attribute_name>
>         </attribute>
>         <attribute>
>             <date_type>string</data_type>
>             <value>The Strokes</value>
>             <attribute_name>artist</attribute_name>
>         </attribute>
>         <attribute>
>             <date_type>string</data_type>
>             <value>Room on Fire</value>
>             <attribute_name>album</attribute_name>
>         </attribute>
>         <attribute>
>             <date_type>int</data_type>
>             <value>2005</value>
>             <attribute_name>published</attribute_name>
>         </attribute>
>     </data>
>     <build_parameter_order>name artist album
> published</build_parameter_order>
> </class>
>
>
> I have no idea how to do the inspection part of this little problem.
I
> could just have each class define its own meathod to convert to this
> format, but that would be a lot of work when i could just make one
> class that solves the problem for all classes. Is there a way to do
> this?
>
> cheers
> ---
> Tim Henderson
> mail me: tim.tadh at gmail.com

Check out the gnosis.magic package of David Mertz (
http://www-106.ibm.com/developerworks/linux/library/l-pymeta.html).
Even if it's not exactly what you want, it will give you an idea of
where to go from there.

George



From dcolford2000 at hotmail.com  Wed May 25 09:27:54 2005
From: dcolford2000 at hotmail.com (dcolford2000 at hotmail.com)
Date: 25 May 2005 06:27:54 -0700
Subject: Python Impact Analysis Tool ?
Message-ID: <1117027674.787033.113730@f14g2000cwb.googlegroups.com>

Hi All - I'm new to python

Is there an impact analysis tool out there that can cross reference
python -- VB has a couple of these tools (eg. Visual Expert)

TIA, All comments welcome
Dave



From ivoras at _-_fer.hr  Fri May 13 07:02:32 2005
From: ivoras at _-_fer.hr (Ivan Voras)
Date: Fri, 13 May 2005 13:02:32 +0200
Subject: stop a thread safetely
In-Reply-To: <GKydnSRaPKHMfxnfRVn-ig@powergate.ca>
References: <pan.2005.05.13.12.06.14.991870@gmail.com>
	<UvCdnaGDcsHBOhnfRVn-vg@powergate.ca>
	<pan.2005.05.13.14.47.34.35565@gmail.com>
	<GKydnSRaPKHMfxnfRVn-ig@powergate.ca>
Message-ID: <d62pg3$m5g$1@bagan.srce.hr>

Peter Hansen wrote:

> call to recv() does not guarantee that the full 608 bytes of data is 

Does read() have that guarantee?


From fredrik at pythonware.com  Tue May 10 13:14:37 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 10 May 2005 19:14:37 +0200
Subject: A Faster Way...
References: <OFFDC41720.16387EDC-ONC1256FFD.005C4DB8-C1256FFD.005CCA1C@eni.pri>
Message-ID: <d5qpo3$vet$1@sea.gmane.org>

andrea.gavana at agip.it wrote:

> If I simplify the problem, suppose I have 2 lists like:
>
> a = range(10)
> b = range(20,30)
>
> What I would like to have, is a "union" of the 2 list in a single tuple. In
> other words (Python words...):
>
> c = (0, 20, 1, 21, 2, 22, 3, 23, 4, 24, 5, 25, .....
>
> and so on.

here are some alternatives:

    c = sum(zip(range(10), range(20, 30)), ())

or

    c = []
    [c.extend(x) for x in zip(range(10), range(20, 30))]
    c = tuple(c)

or

    from _tkinter import _flatten
    c = _flatten(zip(range(10), range(20, 30)))

(timeit is your friend)

</F>





From timothy at open-networks.net  Fri May  6 20:59:51 2005
From: timothy at open-networks.net (Timothy Smith)
Date: Sat, 07 May 2005 10:59:51 +1000
Subject: py2exe + svn - the final drama
In-Reply-To: <u64xvkjf0.fsf@fitlinxx.com>
References: <427AD7E8.1060500@open-networks.net>	<mailman.96.1115384045.29826.python-list@python.org>	<uoebojc8g.fsf@fitlinxx.com>	<just-075293.00240707052005@news1.news.xs4all.nl>	<mailman.118.1115420568.29826.python-list@python.org>
	<u64xvkjf0.fsf@fitlinxx.com>
Message-ID: <427C1307.5080300@open-networks.net>

David Bolen wrote:

>Timothy Smith <timothy at open-networks.net> writes:
>
>  
>
>>what i do is as soon as the update is complete i close the app, but it
>>still gives the error, i tried clear() after update and before it, it
>>still got the same error. it's be nice to not have to fiddle around
>>with the zip file, i really think making py2exe create a dir instead
>>of a zip will be much better
>>    
>>
>
>Well, you'd still potentially have a problem if the update changed a
>file in that directory that hadn't been imported yet, but now depended
>on other updated files that your application had already loaded old
>versions for.  That's a general problem of updating modules beneath
>the executing application, and not really specific to the zip file,
>although you're getting a zip importer specific error related to that
>in this case.
>
>  
>
>>here what i do anyway
>>
>>if (os.name == 'nt') or (os.name == 'win32'):
>>                     client = pysvn.Client()
>>            #get current revision number
>>            CurrentRev = client.info('').revision.number
>>                     Check = client.update('')
>>            sys.path_importer_cache.clear()
>>                     if Check.number > CurrentRev:
>>                self.Popup('Update installed, click ok and restart
>>','Update installed')
>>                self.Destroy()
>>         else:
>>            InfoMsg.Update(3,'No Updates needed')
>>    
>>
>
>Ah, it's more devious than I thought.  Just pointed out the other
>missing piece in his response.
>
>Apparently there are two levels of caching that you've got to defeat
>if you change the underlying zip:
>
>1. A global file set of file directory cache information for any opened
>   zip file (for all files in the zip).  This is held in the zipimport
>   module global _zip_directory_cache.
>2. Individual file cached information within the zipimporter instance
>   that is kept in the path importer cache (sys.path_importer_cache).
>   Technically these are just references to the same individual entries
>   being held in the dictionary from (1).
>
>So when you cleared out (2), it still found the cached directory at
>the zipimport module level and re-used that information.  But if you only
>clear out (1), then the reference in (2) to the directory entries for
>currently imported modules remains and still gets used.
>
>I tried testing this with a small zip file that I first built with normal
>compression on the entries, then imported one from a running interpreter,
>and then rebuilt the zip without compression.  I couldn't seem to get the
>precise error you were getting, but doing this gave me a decompression
>error upon an attempted reload of an imported module, since the cached
>information still thought it was compressed.
>
>After clearing both sys.path_importer_cache and
>zipimport._zip_directory_cache, the reload went fine.
>
>It's sort of unfortunate that you have to cheat with the "private"
>cache clearing in this case.  It might be worth an enhancement request
>to see if zipimport could know to update itself if the timestamp on
>the zip file changes, but this is sort of a very specialized scenario.
>Although maybe just a public way to cleanly flush import cache
>information would be useful.
>
>-- David
>  
>
awesome it looks like it's working now!
it's a very convenient why of keeping them all up today, now instead of 
stuffing around making setup packages i can just run my makeexe.bat file 
to create the py2exe files, svn commit -m "new package" and i'm done.
also there's no way for the staff to bugger it up ( well, it's fairly safe)

thanks very very much to everyone who made suggestions, this is what 
makes OSS so good - the community input and support.


From peter at engcorp.com  Thu May  5 18:07:35 2005
From: peter at engcorp.com (Peter Hansen)
Date: Thu, 05 May 2005 18:07:35 -0400
Subject: py2exe and library.zip
In-Reply-To: <uzmv92v5z.fsf@fitlinxx.com>
References: <mailman.76.1115095357.6583.python-list@python.org>
	<5uadnUTTqv6Iw-rfRVn-qw@powergate.ca>
	<mailman.129.1115156250.6583.python-list@python.org>
	<maednQTrx_iJLOXfRVn-hA@powergate.ca> <uzmv92v5z.fsf@fitlinxx.com>
Message-ID: <zYudnQH0-MWKBOffRVn-hw@powergate.ca>

David Bolen wrote:
> Peter Hansen <peter at engcorp.com> writes:
>>Do you know that Subversion has (as I understand it) a fairly
>>intelligent binary file comparison routine, and it will (again, as I
>>understand it) not transmit the entire contents of the zip file but
>>would actually send only the portions that have changed?  At least,
>>that's if the file isn't compressed in some way that prevents this
>>algorithm from working well.  (Note to self: check if zip files that
>>can be in sys.path can be compressed, and if py2exe compresses them.)
> 
> Even if the files were compressed, which has a net result similar to
> randomizing the contents and will certainly extend the portion that
> appears "changed", the worst that would happen is that subversion
> (which does use a binary delta algorithm) would end up downloading the
> single file portion of the zip file rather than the smaller change
> within the file.  It should still be efficient.

Good point.  When I wrote that I was picturing the form of compression 
that a .tar.gz file would have, not what is actually used inside a .zip 
file which is -- quite logically now that you point it out -- done on a 
file-by-file basis.  (Clearly to do otherwise would risk your data and 
make changing compressed zips highly inefficient.)

-Peter


From rkern at ucsd.edu  Thu May 12 01:02:48 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Wed, 11 May 2005 22:02:48 -0700
Subject: Python Documentation (should be better?)
In-Reply-To: <d5un1i$lof$1@panix3.panix.com>
References: <5C99C308457E6D4EA5448EA52A66004A675A6E@or.mxim.com>	<d5u8mk$k6n$1@sea.gmane.org>
	<4282D0C5.3A8B3786@pauahtun.org>	<mailman.425.1115869922.29826.python-list@python.org>
	<d5un1i$lof$1@panix3.panix.com>
Message-ID: <d5unjb$kt6$1@sea.gmane.org>

Aahz wrote:
> In article <mailman.425.1115869922.29826.python-list at python.org>,
> Robert Kern  <rkern at ucsd.edu> wrote:
> 
>>I believe that docs.python.org was added mostly to aid Google searches. 
>>I *do* think that the Documentation link should go to docs.python.org. I 
>>believe there is a mailing list somewhere that discusses improvements to 
>>the website.
>>
>><Googles> Ah:
>>
>>http://mail.python.org/mailman/listinfo/pydotorg/
> 
> Google gave you the wrong answer.  ;-)  pydotorg is for people actively
> working on the website, not for discussions about improving the website.
> There's another list for that, but it's currently moribund because we're
> waiting for a website redesign.  (The PSF board voted to pay someone to
> redesign www.python.org.)

Dammit! Google's supposed to read my mind and give me what I want, not 
what I ask for!

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From tzot at sil-tec.gr  Fri May 13 19:28:57 2005
From: tzot at sil-tec.gr (Christos TZOTZIOY Georgiou)
Date: Sat, 14 May 2005 02:28:57 +0300
Subject: Solipsis: Python-powered Metaverse
References: <d5qqo7$3dc$1@sea.gmane.org><4280F03E.2070903@kzoo.edu>	<mailman.323.1115778422.29826.python-list@python.org><du7u0lacnam.fsf@mozart.cc.tut.fi>
	<428220D2.5070701@ulmcnett.com>
	<mailman.421.1115866152.29826.python-list@python.org>
Message-ID: <09da815umhec164dm8ja0k6l2h4i8icm36@4ax.com>

On Wed, 11 May 2005 22:48:31 -0400, rumours say that "Terry Reedy"
<tjreedy at udel.edu> might have written:

>>  and what if both computers
>> wanted to participate on the port 6000 fun?

>Recently, I had one family member use my purchased account to logon to and 
>play an online action game, which sends a constant stream of update info. 
>Then, curious what would happen, I logged on, from a different computer but 
>through the same router, with a temporary guest account.  Somewhat to my 
>surprise, it worked -- without touching the computer (XP) or router 
>settings.  And kept working the whole weekend.  So there is a way to tag 
>update packets so they can be reliably separated into two streams (and vice 
>versa).  Solipsis should be able to do the same.

In your case, it's the internal address that originated the connection--
so the router can distinguish the streams:

(int1, port1)->(ext_host, port0)
maps to (router_ext, port2)->(ext_host, port0)

(int2, port3)->(ext_host, port0)
maps to (router_ext, port4)->(ext_host, port0)

Every TCP/UDP packet includes srcip, srcport, dstip, dstport, so an
internal "dictionary" makes the translations to and fro (the router
changes the srcip, srcport whenever a packet passes through).  The
internal computer knows not that the router mangled the packets, and the
external computer knows nothing about the internal computer address.

However, if both of your internal computers listen to port 6000 for
example, there is no easy way for the router to know to which one it
should forward an *incoming* request for connection to port 6000-- all
it knows is that some external computer connected to its external
interface ip address at some specific port.  In this case, *typically*
you would map port (router_ext, 6000) to (int1, 6000) and (router_ext,
6001) to (int2, 6000).  The internal computers would both think that
some computer is doing a connect at their port 6000.
-- 
TZOTZIOY, I speak England very best.
"Be strict when sending and tolerant when receiving." (from RFC1958)
I really should keep that in mind when talking with people, actually...


From nothingcanfulfill at gmail.com  Wed May 11 10:48:55 2005
From: nothingcanfulfill at gmail.com (ncf)
Date: 11 May 2005 07:48:55 -0700
Subject: Python Args By Reference
In-Reply-To: <118458qtig7pq1f@corp.supernews.com>
References: <1115769308.136143.74080@f14g2000cwb.googlegroups.com>
	<1182j1daaepv6f4@corp.supernews.com>
	<1115787330.723188.295610@f14g2000cwb.googlegroups.com>
	<roy-385EA3.06423911052005@reader1.panix.com>
	<IPqdnexVeJOhkR_fRVn-1w@powergate.ca>
	<118458qtig7pq1f@corp.supernews.com>
Message-ID: <1115822935.704924.287860@f14g2000cwb.googlegroups.com>

Thanks to everyone for your assistance. I shall reread this a couple
times and then try to make something that works.

Many thanks and have a GREAT day.
-Wes



From mwm at mired.org  Thu May 26 18:25:56 2005
From: mwm at mired.org (Mike Meyer)
Date: Thu, 26 May 2005 17:25:56 -0500
Subject: Pyrex: step in for loop
References: <3fmtshF8hj7vU1@individual.net> <86oeaxwsmy.fsf@guru.mired.org>
	<3fmvt3F8l7f8U1@individual.net>
Message-ID: <86fyw9wrnv.fsf@guru.mired.org>

"Luis P. Mendes" <luis_lupe2XXX at netvisaoXXX.pt> writes:

> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
>
> | so it's
> |
> | for i in range(80000, 140000, 10000): ...
> |
> |     <mike
>
> For what I've read, for i in range is slower than the other for
> construct used by Pyrex:
>
> for i from iMin <= i < iMax:
>
> My question had to do with this new expression.  How can I introduce a
> step there.

My bad. I missed the "Pyrex" in the subject line.

   Sorry,
   <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From jwaixs at gmail.com  Mon May 23 15:49:08 2005
From: jwaixs at gmail.com (Jwaixs)
Date: Mon, 23 May 2005 21:49:08 +0200
Subject: blabla
References: <pan.2005.05.23.17.41.44.849654@gmail.com>
	<d6squm$cke$1@swifty.westend.com>
Message-ID: <32d85$429233b4$53e8229a$32118@freeler.nl>

Peter Maas wrote:

> Noud Aldenhoven schrieb:
>> Python rulz and sorry for this spam...
>
> news.test is made for testing :)
>

I really should appoligize for this spam, I though I couldn't post it
but actually it did. I was trying to get Pan running, but I couldn't
find a place where I could put my authorisation for the smtp server. So
I though I could post something and it would never be sent. But it
did...

Sorry,

Jwaixs



From lbates at syscononline.com  Wed May 11 10:02:42 2005
From: lbates at syscononline.com (Larry Bates)
Date: Wed, 11 May 2005 09:02:42 -0500
Subject: HELP Printing with wxPython
In-Reply-To: <d5t4oj$sct$1@carabinieri.cs.interbusiness.it>
References: <d5t4oj$sct$1@carabinieri.cs.interbusiness.it>
Message-ID: <42821082.6090401@syscononline.com>

Mario,

Here is a function stripped from a working program that uses printpreview
from wxWindows to print out cells from a grid that the user is working
on.  Hopefully this can point you in the proper direction.

Regards,
Larry Bates

    def DO_printpreview(self, event):
        if self._trace:
            self.logf.writelines("T","Entering OuterFrame.DO_printpreview")
        self.SetStatusText('Generating Print Preview', 0)
        #
        # Define the columns on the printout
        #
        columndefs=(("Cust#",            8.0/16.0, wxALIGN_LEFT),
                    ("Customer Name",   29.0/16.0, wxALIGN_LEFT),
                    ("Reference",       16.0/16.0, wxALIGN_LEFT),
                    ("Type",             6.0/16.0, wxALIGN_CENTRE),
                    ("Inv. #",           8.0/16.0, wxALIGN_CENTRE),
                    ("InvDate",          9.0/16.0, wxALIGN_CENTRE),
                    ("L#",               4.0/16.0, wxALIGN_CENTRE),
                    ("Item #",          12.0/16.0, wxALIGN_CENTRE),
                    ("Item Description",45.0/16.0, wxALIGN_LEFT),
                    ("Qty",              6.0/16.0, wxALIGN_RIGHT),
                    ("Cost",            10.0/16.0, wxALIGN_RIGHT),
                    ("OMMC $",          10.0/16.0, wxALIGN_RIGHT)
                    )
        columncount=len(columndefs)
        #
        # Create a new frame for the print preview and give it to PrintTable
        #
        self.previewframe=PreviewFrame(None, sys.stdout)
        if self._trace:
            log.writelines("T","DO_ppv-Creating PrintTable instance")
        prt=PrintTable(self.previewframe)
        #
        # Set printout column widths
        #
        if self._trace: self.logf.writelines("T","DO_ppv-Setting column widths")
        prt.set_column=[a[1] for a in columndefs]
        #
        # Set the column labels (headings)
        #
        if self._trace:
            self.logf.writelines("T","DO-ppv-Setting column headings")
        prt.label=[a[0] for a in columndefs]
        #
        # Set the column alignments
        #
        if self._trace:
            self.logf.writelines("T", "DO-ppv-Setting column alignments")
        map(prt.SetColAlignment, range(columncount), [a[2] for a in columndefs])
        #
        # Get the data values from the grid that are selected
        #
        data=self._getdata('1')
        #
        # Skip the first (flag) column and columns 11,13,15,16
        # to delete them from the printout.
        #
        data=[[v[1],v[2],v[3],v[4][0:2],v[5],v[6],
               v[7],v[8],v[9],v[10],v[12],v[14]] for v in data]
        #
        # Loop over the lines and insert a blank line between customers
        #
        blankline=columncount*['']    # Create a blank output line
        lastcustomer=None
        pdata=[]
        for values in data:
            if lastcustomer != None and values[0] != lastcustomer:
                pdata.append(blankline)

            lastcustomer=values[0]
            pdata.append(values)

        pdata.append(blankline)
        prt.data=pdata
        prt.left_margin=0.3
        prt.SetLandscape()
        prt.SetHeader("OMMC Recap Listing-Hardware Items")
        prt.SetFooter()
        prt.SetFooter("Date: ", type = "Date & Time", \
                       align=wxALIGN_LEFT, \indent=prt.left_margin)
        #
        # Override the default font sizes
        #
        prt.text_font_size = 8
        #prt.label_font_size= 7
        prt.cell_left_margin = 1.0/32.0
        prt.Preview()
        if self._trace:
            self.logf.writelines("T","Entering OuterFrame.DO_printpreview")
        return


Mario wrote:
> Hello all, I'm trying hard to make possible to print some simple text from
> python to the default printer using wxPython, after days of internet
> searches I found this page: http://wiki.wxpython.org/index.cgi/Printing but
> is impossible to use this script even if I do exactly as said there. I think
> the script is buggy or I am not able to use it, even if seems very simple to
> use...
> 
> Anyone can give me an hint on how to easily and simply print some text? Is
> there a library ready to download and use? Something like SendPrinter("some
> text\n")?
> 
> Thanks in advance if anyone can give any help.
> 
> Mario
> 
> 


From jjl at pobox.com  Sun May  8 13:30:08 2005
From: jjl at pobox.com (John J. Lee)
Date: 08 May 2005 17:30:08 +0000
Subject: SGMLlib module
References: <1115558176.212693.45280@z14g2000cwz.googlegroups.com>
	<G5udnc_q7Z4fjuPfRVn-hg@powergate.ca>
Message-ID: <87br7lpqvz.fsf@pobox.com>

Peter Hansen <peter at engcorp.com> writes:

> Harlin Seritt wrote:
> > I am trying to use SGMLlib module to extract all links from some data I
> > pulled from the web (via urllib). I have looked at the documentation
> > online and can not make sense of it. As a quick example, how would I
> > get the hyperlinks for an html file?
> 
> I know you're not someone to ignore Google, but this looked like a
> question that could pretty easily be answered using a quick search of
> the comp.lang.python archives via Google Groups -- and it appears I
> was right.
[...]

Also, htmllib extends sgmllib to make this trivial, IIRC, so you
(Harlin) could look at the htmllib source.


John


From hugh.macdonald at gmail.com  Tue May 24 10:19:46 2005
From: hugh.macdonald at gmail.com (Hugh Macdonald)
Date: 24 May 2005 07:19:46 -0700
Subject: Hacking the scope to pieces
In-Reply-To: <mailman.51.1116944260.18027.python-list@python.org>
References: <1116933053.924055.50250@g14g2000cwa.googlegroups.com>
	<mailman.51.1116944260.18027.python-list@python.org>
Message-ID: <1116944386.188200.33490@g49g2000cwa.googlegroups.com>

I will take a look!

Thanks Skip

--
Hugh



From roccomoretti at hotpop.com  Tue May 17 13:39:49 2005
From: roccomoretti at hotpop.com (Rocco Moretti)
Date: Tue, 17 May 2005 12:39:49 -0500
Subject: Python forum
In-Reply-To: <mailman.107.1116345525.8733.python-list@python.org>
References: <mailman.84.1116320178.8733.python-list@python.org>	<118k42k64ai7316@corp.supernews.com>
	<mailman.107.1116345525.8733.python-list@python.org>
Message-ID: <d6da92$t8m$1@news.doit.wisc.edu>

Dave Brueck wrote:
> Grant Edwards wrote:
> 
>>
>> Except for the torture of using a web forum's UI.
>>
>> [In case you can't tell, I hate web forums.  I've never seen a
>> single one with a suable UI.]
> 
> 
> Amen! Generally they are an abomination.
> 
> To make matters worse, many forums that become popular are saddled with 
> so many advertisements that moving from one message to another becomes 
> a... grueling... lesson... in... patience.

It may seem snobish, but my main gripe with most of the web-forums I've 
seen is the people using them. There are far too many content-free "Me 
too" posts, which are horribly difficult to filter out (due to the poor 
UI). It's partly the web-forum's fault - the really bad ones have posts 
with some cute/animated smiley as the sole content. It's rare that 
usenet has such posts, because a colon and a right paren in text doesn't 
seem nearly as interesting as some saccarine singing, dancing, yellow blob.


From xah at xahlee.org  Mon May 16 05:42:09 2005
From: xah at xahlee.org (xah at xahlee.org)
Date: 16 May 2005 02:42:09 -0700
Subject: tree functions daily exercise
In-Reply-To: <cBIhe.1762$uR4.262@newsread2.news.atl.earthlink.net>
References: <1115969822.361451.100620@g47g2000cwa.googlegroups.com>
	<87r7gbr1rg.fsf@sefirot.ii.uib.no>
	<cBIhe.1762$uR4.262@newsread2.news.atl.earthlink.net>
Message-ID: <1116236529.172707.174570@g47g2000cwa.googlegroups.com>

K!
http://en.wikipedia.org/wiki/K_programming_language

Interesting.
Looking at your program, they are so short. I don't know if they are
full implementation or what...

Btw, the functions listed at
 http://xahlee.org/PerlMathematica_dir/Matica.html
are motly from Mathematica, except the Tree Index Set Utilities:
   RandomIndexSet, LeavesIndexSet, NonleavesIndexSet, MinimumIndexSet,
   CompleteIndexSet, IndexSetSort, TreeToIndexSet, IndexSetToTree

which isn't trivial to code. (nor is it trivial for some of the
Mathematica functions)
the complete documentation can be seen online
http://documents.wolfram.com/mathematica/

 Xah
 xah at xahlee.org
? http://xahlee.org/


sa wrote:
> xah:
>
> i've provided k implementations here:
>
>     http://www.nsl.com/k/xah.k
>
> of a dozen or so of the functions in your toolkit.  many are trivial,
> since they're simply k primitives.  e.g. transpose is just +:
>
> here are some of the definitions (the script contains test-examples
> as well):
>
> range1:!:
> range2:{x+!1+y-x}
> range3:{x+z*!1+_(y-x)%z}
> depth:{:[(@x)|~#x;0;1+|/_f'x]}
> leaves:,//
> leafcount:#leaves@
> leafpaths:{:[@x;,();,/(!#x),/:'_f'x]}
> subpaths:{(1+!#x)#\:x}
> nonleafpaths:?,/subpaths'-1_'leafpaths@
> nonleafcount:#nonleafpaths@
> nodecount:+/(leafcount;nonleafcount)@\:
> dimensions:^:
> part:.
> transpose:+:
> apply:{y{x'}/x}
> flattenat:{apply[,/;y]x}
> rotateleft:1!
>
> my immediate reaction is that a well-designed set of primitives
> obviates the need for such a toolkit.
> 
> nb: i've eliminated the newsgroup crossposting.



From nospam at spam.fr  Sat May 28 04:36:04 2005
From: nospam at spam.fr (nico)
Date: Sat, 28 May 2005 10:36:04 +0200
Subject: lambda a plusieurs arguments
References: <mailman.194.1117216641.18027.python-list@python.org>
Message-ID: <42982d74$0$26456$626a14ce@news.free.fr>

Jp Calderone wrote:

> On Fri, 27 May 2005 19:38:33 +0200, nico <nospam at spam.fr> wrote:
>>Bonjour,
>>
>>Comment faire une fonction lambda a plusieurs arguments ?
>>
>>>>> (lambda a:a+1)(2)
>>3
>>>>> f=(lambda (a,b):a+b)
>>>>> f(5,6)
>>Traceback (most recent call last):
>>  File "<stdin>", line 1, in ?
>>TypeError: <lambda>() takes exactly 1 argument (2 given)
>>>>> f((5.6))
>          ^--- ,
> 
>     >>> f((5, 6))
>     11
>     >>>
> 
> Aussi,
> 
>     >>> f = lambda a, b: a + b
>     >>> f(5, 6)
>     11
>     >>>
> 
> Jp


Ok, merci.

-- 
nico


From shane at hathawaymix.org  Fri May 27 03:57:23 2005
From: shane at hathawaymix.org (Shane Hathaway)
Date: Fri, 27 May 2005 01:57:23 -0600
Subject: Running a python program during idle time only
In-Reply-To: <5j64x9gz09.fsf@idiom.com>
References: <1116637560.499307.28700@o13g2000cwo.googlegroups.com>	<mailman.7.1116821147.18027.python-list@python.org>	<1116869538.611233.264960@g14g2000cwa.googlegroups.com>
	<5j64x9gz09.fsf@idiom.com>
Message-ID: <4296D2E3.8060605@hathawaymix.org>

Mike Meyer wrote:
> On a completely different topic, this looks like the wrong way to solve
> the problem. You want to update a search engine based on changes to the
> underlying file system. The right way to do this isn't to just keep
> rescanning the file system, it's to arrange things so that your scanner
> gets notified of any changes made to the file system. I did something like 
> this for my web site search engine, but that's hooked into the SCM that's
> used for propogating changes to the web site. I know someone is working
> on patches to the FreeBSD kernel to make this kind of thing work. It would
> seem that some of the "backup" facilities that worked by keeping a mirror
> of the disk on separate media would have to have used such hooks, but maybe
> not.

I think you're right that filesystem change notification is what Carlos
needs.

If you're interested in using Linux, Carlos, "inotify" is a new kernel
module that can notify your program of filesystem changes.  It's not
folded into the mainline kernel yet, but it's a clean patch.

http://www.edoceo.com/creo/inotify/

I don't know if Windows has anything like it.  I'd be interested to hear
if it does.

Shane


From skip at pobox.com  Thu May 12 12:32:29 2005
From: skip at pobox.com (Skip Montanaro)
Date: Thu, 12 May 2005 11:32:29 -0500
Subject: Python Documentation (should be better?)
In-Reply-To: <86sm0sig7k.fsf@guru.mired.org>
References: <5C99C308457E6D4EA5448EA52A66004A675A6E@or.mxim.com>
	<17026.26789.592527.975821@montanaro.dyndns.org>
	<mailman.398.1115843305.29826.python-list@python.org>
	<eL2dnQqPycfr7R_fRVn-1w@comcast.com>
	<mailman.470.1115911344.29826.python-list@python.org>
	<86sm0sig7k.fsf@guru.mired.org>
Message-ID: <17027.34077.234131.161432@montanaro.dyndns.org>


    Mike> Given that Python hides the difference between user-defined
    Mike> objects and built-in objects, it's not clear to me that anything
    Mike> other than the current system, with all the classes/types in one
    Mike> place, makes sense.

Maybe the Module Index should be renamed "Module/Type Index" and embellished
with the builtin types, so that you'd find "float (builtin)", "string
(builtin)", "dict (builtin)", etc. in the appropriate alphabetical
positions.

Skip


From jabel at plus.net  Thu May 26 12:02:00 2005
From: jabel at plus.net (John Abel)
Date: Thu, 26 May 2005 17:02:00 +0100
Subject: __init__() not called automatically
In-Reply-To: <4295f081$0$19214$626a14ce@news.free.fr>
References: <1117081917.760603.82610@z14g2000cwz.googlegroups.com>	<mailman.121.1117083356.18027.python-list@python.org>
	<4295f081$0$19214$626a14ce@news.free.fr>
Message-ID: <4295F2F8.6050107@plus.net>

bruno modulix wrote:

>Paul McNett wrote:
>  
>
>>Sriek wrote:
>>
>>    
>>
>(snip)
>  
>
>>>Similarly, why do we have to explicitly use the 'self' keyword
>>>everytime?
>>>This is closer to a wart, IMO, 
>>>      
>>>
>
>  
>
Here's one of the shorter threads discussing 'self'.  I remember one 
looooong running thread, but can't seem to find it, at the minute

http://groups.google.co.uk/group/comp.lang.python/browse_thread/thread/f28dea8d63ac44/a0c80d8b1c92101c?q=python++self+implicit&rnum=1&hl=en#a0c80d8b1c92101c

J


From rolf.wester at ilt.fraunhofer.de  Tue May 31 04:50:37 2005
From: rolf.wester at ilt.fraunhofer.de (Rolf Wester)
Date: Tue, 31 May 2005 10:50:37 +0200
Subject: plotting with Python
In-Reply-To: <PAGme.196$JQ6.111@newssvr11.news.prodigy.com>
References: <429aeac6$1@news.fhg.de>
	<PAGme.196$JQ6.111@newssvr11.news.prodigy.com>
Message-ID: <429c2564$1@news.fhg.de>

Philippe C. Martin wrote:
> Look at wxPython
> 
> Regards,
> 
> Philippe
> 
> 
I will do it, thank you for your reply.

Rolf

> 
> Rolf Wester wrote:
> 
> 
>>Hi,
>>
>>I have a Python console application that is intended to be used
>>interactively and I have to add plotting capabilities (multiple XY plots
>>and if possible 2D-surface plots). I'm loocking for a reasonably fast
>>plotting library (not GPL'ed, needs not be for free) that can be used
>>under Windows. An alternative would also be a standalone application
>>that can be controlled via TCP/IP from my Python application. I tried
>>matplotlib but this is not fast enough (especially under Windows). I
>>considered PyQwt but this is GPL'ed. So I would be very appreciative for
>>any help.
>>
>>With kind regards
>>
>>Rolf Wester
> 
> 


From mwm at mired.org  Thu May 19 03:27:03 2005
From: mwm at mired.org (Mike Meyer)
Date: Thu, 19 May 2005 02:27:03 -0500
Subject: newbie file/DB processing
References: <1116445969.381550.99280@f14g2000cwb.googlegroups.com>
Message-ID: <86psvn3cc8.fsf@guru.mired.org>

"len" <lsumnler at gmail.com> writes:

> I am in the process of learning python.  I have bought Learning Python
> by Mark Lutz, printed a copy of Dive into Python and various other
> books and looked at several tutorials.  I have started a stupid little
> project in python and things are proceeding well.  I am an old time
> cobol programmer from the IBM 360/370 eria and this ingrained idea of
> file processing using file definition (FD's) I believe  is causing me
> problems because I think python requires a different way of looking at
> datafiles and I haven't really gotten my brain around it yet.  I would
> like to create a small sequential file, processing at first to store a
> group id, name, amount, and date which I can add to delete from and
> update. Could someone point me to some code that would show me how this
> is done in python.  Eventually, I intend to expand my little program to
> process this file as a flat comma delimited file, move it to some type
> of indexed file and finally to some RDBMS system.  My little program
> started out at about 9 lines of code and is now at about 100 with 5 or
> six functions which I will eventually change to classes (I need to
> learn OOP to but one step at a time).

What you're looking for isn't so much the Python way of doing things;
it's the Unix way of doing things. The OS doesn't present the file as
a sequence of records; files are presented as a sequence of bytes. Any
structure beyond that is provided by the application - possibly via a
library. This is a sufficiently powerful way of looking at files that
every modern OS I'm familiar with uses this view of files.

You might want to look at <URL: http://www.faqs.org/docs/artu/ >. It's
not really an answer to your question, but looks at Unix programming
in general. It uses fetchmail as an example application, including
examining the configuration editor written in Python.

A classic Unix approach to small databases is to use text files. When
you need to update the file, you just rewrite the whole thing. This
works well on Unix, because it comes with a multitude of tools for
processing text files. Such an approach is simple and easy to
implement, but not very efficient for large files. A classic example
is a simple phone book application: you have a simple tool for
updating the phone book, and use the "grep" command for searching
it. Works like a charm for small files, and allows for some amazingly
sophisticated queries.

To provide some (simple) code, assume your file is a list of lines,
with id, name, amount, date on each line, separated by spaces. Loading
this into a list in memory is trivial:

datafile = open("file", "r")
datalist = []
for line in data:
    datalist.append(line.split())
datafile.close()

At this point, datalist is a list of lists. datalist[0] is a list of
[id, name, amount, date]. You could (for example) sum all the amounts
like so:

total = 0
for datum in datalist:
    total += datum[2]

There are more concise ways to write this, but this is simple and
obvious.

Writing the list back out is also trivial:

datafile = open("file", "w")
datafile.writelines(" ".join(x) + "\n" for x in datalist)
datafile.close()

Note that that uses a 2.4 feature. The more portable - and obvious -
way to write this is:

datafile = open("file", "w")
for datum in datalist:
    datafile.write(" ".join(datum) + "\n")
datafile.close()

For comma delimited files, there's the CSV module. It loads files
formmated as Comma Seperated Values (a common interchange format for
spreadsheets) into memory, and writes them back out again. This is a
slightly more structured version of the simple text file approach. It
may be just what you're looking for.

If you want to store string objects selectable by a single string key,
the various Unix db libraries are just what the doctor ordered. The
underlying C libraries allow arbitrary memory chunks as keys/objects,
but the Python libraries use Python strings, and dbms look like
dictionaries. The shelve module is built on top of these, allowing you
to store arbitrary Python objects instead of just strings.

Finally, for RDBMS, you almost always get SQL these days. The options
run from small embedded databases built in python to network
connections to full-blown SQL servers. I'd put that decision off until
you really need a database.

    <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From n.20.e5ke at spamgourmet.com  Wed May  4 13:56:31 2005
From: n.20.e5ke at spamgourmet.com (Esben Pedersen)
Date: Wed, 04 May 2005 19:56:31 +0200
Subject: How do you convert a string obj to a file obj?
In-Reply-To: <d5at2j$7uv$1@vegh.ks.cc.utah.edu>
References: <d5at2j$7uv$1@vegh.ks.cc.utah.edu>
Message-ID: <42790d0c$0$79465$14726298@news.sunsite.dk>

Matthew Thorley wrote:
> I'm writing a web app whereby a user uploads a tar acrhive which is then
> opened and processed. My web form reads the file like this:
> 
> while 1:
>     data = value.file.read(1024 * 8) # Read blocks of 8KB at a time
>     if not data: break
> 
> which leaves me with data as a string obj. The problem that I have is
> that the function that processes the archive expects a file object. So
> far the only solution I have found it to write the file to disk and then
> read it back.
> 
> Is there an easy way to convert data, in the example above into a file
> object?
> 
> Thanks
> -Matthew

value.file is a file object. Why don't you give that as an argument?

/Esben


From tjreedy at udel.edu  Sat May  7 21:27:38 2005
From: tjreedy at udel.edu (Terry Reedy)
Date: Sat, 7 May 2005 21:27:38 -0400
Subject: Python Pseudo-Switch
References: <200505071736.39806.jstroud@mbi.ucla.edu>
Message-ID: <d5jph1$knf$1@sea.gmane.org>


"James Stroud" <jstroud at mbi.ucla.edu> wrote in message 
news:200505071736.39806.jstroud at mbi.ucla.edu...
> Because of my poorly designing a database, I have recently found it 
> necessary
> to explore the wonders of the Python pseudo-switch:
>
> do_case = { "A" : lambda x: x["bob"],
>            "B" : lambda x: x["carol"],
>            "C" : lambda x: "Ted",
>            "D" : lambda x: do_something(x) }
>
> my_thing = do_case[get_value_from_thin_air()](adict)
>
> How to handle this kind of thing when lambda is removed from the 
> language,
> beside the obvious def'ing those tiny little functions?

I don't believe any cast-in-concrete decision about lambda has been made 
yet.  I expect there will be a PEP for removals when appropriate.  Comments 
such as this will bolster the case against removal without replacement if 
then resubmitted

TJR






From could.net at gmail.com  Thu May 19 01:47:23 2005
From: could.net at gmail.com (could ildg)
Date: Thu, 19 May 2005 13:47:23 +0800
Subject: What's the use of changing func_name?
Message-ID: <311b5ce105051822477c09c81@mail.gmail.com>

def a(func):
    def _inner(*args, **kwds):
        print "decorating..."
        return func(*args, **kwds)
    _inner.func_name = func.func_name -->when I delete this line, the
rusult is the same. why?
    return _inner

@a
def g(*args):
    for x in args:
        print x
    print "this is in function g"

g(1,2,3,4,5)

func_name is writable in python 2.4. I wonder what's the use of
writing it. Consider the code above, to change the func_name or not
will get the completely same result. The result is as
below:

decorating...
1
2
3
4
5
this is in function g

Please tell me how does this happen, thank you~


From rschroev_nospam_ml at fastmail.fm  Tue May  3 11:50:30 2005
From: rschroev_nospam_ml at fastmail.fm (Roel Schroeven)
Date: Tue, 03 May 2005 15:50:30 GMT
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <UeKde.80050$R05.5131372@phobos.telenet-ops.be>
References: <d4u60o$akh$1@news2.netvision.net.il>	<mailman.47.1114818531.14961.python-list@python.org>	<1114924100.296223.114020@g14g2000cwa.googlegroups.com>	<1114927892.321086.60190@z14g2000cwz.googlegroups.com>	<zX%ce.78213$ft1.5056576@phobos.telenet-ops.be>	<Zj2de.78345$a42.5091422@phobos.telenet-ops.be>	<mailman.6.1115001137.6583.python-list@python.org>	<3dmi74F6q7m6hU2@individual.net>	<mailman.73.1115090620.6583.python-list@python.org>	<1115094028.508122.174390@l41g2000cwc.googlegroups.com>
	<mailman.78.1115096637.6583.python-list@python.org>
	<UeKde.80050$R05.5131372@phobos.telenet-ops.be>
Message-ID: <a5Nde.80184$tL5.5097593@phobos.telenet-ops.be>

Roel Schroeven wrote:

> John Hazen wrote:
> 
> 
>>Hmmm.  The title of the html page is "dealing evil".  If you were
>>playing war instead of solitaire, how would you change how you deal the
>>cards?
> 
> 
> Hm, I'm not familiar with playing war. You couldn't elaborate a bit on 
> that, could you?

Never mind, I got it anyway now.

-- 
If I have been able to see further, it was only because I stood
on the shoulders of giants.  -- Isaac Newton

Roel Schroeven


From none  Wed May 11 15:22:16 2005
From: none (Hansan)
Date: Wed, 11 May 2005 21:22:16 +0200
Subject: Problem combining python code and html
References: <42822b3d$0$653$ba624c82@nntp02.dk.telia.net>
	<mailman.381.1115831593.29826.python-list@python.org>
Message-ID: <42825b43$0$650$ba624c82@nntp02.dk.telia.net>

Thanks for you reply and Help Fredrik Lundh

The change did remove the error message, and I can see what was wrong.
However there is now a new problem, the only thing that is displayed is one 
single character and that is: <

Do you or anyone else have a suggestion to what the cause to this new 
problem is ?

Thanks for your time




"Fredrik Lundh" <fredrik at pythonware.com> wrote in message 
news:mailman.381.1115831593.29826.python-list at python.org...
> Hansan wrote:
>
>> I used the same code they use for making the two display functions and 
>> the
>> same template for the html form. I even tried using the form template 
>> they
>> use too, but it still dosnt work. I will now show how the functions and
>> templates look like.
>>
>> The two display functions are:
>> def Display(Content):
>>     TemplateHandle = open(TemplateFile, "r")
>>     TemplateInput = TemplateHandle.read()
>>     TemplateHandle.close()
>>     BadTemplateException = "There was a problem with the HTML template."
>>     SubResult = re.subn("<!-- *** INSERT CONTENT HERE *** -->",
>> Content,TemplateInput)
>
> re.subn takes a regular expression, in which certain characters have
> special meanings.  for example, in
>
>    <!-- *** INSERT JWZ QUOTE HERE *** -->
>
> "*" is reserved character, which means "repeat preceeding expression".
>
> so "***" means repeating a repeated repeat, which makes very little
> sense, which is why the RE engine complains.
>
> changing
>
>>     SubResult = re.subn("<!-- *** INSERT CONTENT HERE *** -->",
>> Content,TemplateInput)
>
>    SubResult = TemplateInput.replace(
>            "<!-- *** INSERT CONTENT HERE *** -->",
>            Content
>    )
>
> should work better.
>
> </F>
>
>
> 




From peter at engcorp.com  Tue May 31 13:06:31 2005
From: peter at engcorp.com (Peter Hansen)
Date: Tue, 31 May 2005 13:06:31 -0400
Subject: COM+, Javascript and Python
In-Reply-To: <d7i3b9$q40$1@domitilla.aioe.org>
References: <1114609311.916761.272980@f14g2000cwb.googlegroups.com>
	<d7i3b9$q40$1@domitilla.aioe.org>
Message-ID: <6dSdneZkQftqBAHfRVn-1w@powergate.ca>

dannyguindi wrote:
> Do you guys know if there is a way to do this in Linux?

What is "this"?  Your subject line provides a context, but not a problem 
to which we can give you the solution.  Please be specific.

-Peter


From skip at pobox.com  Thu May 12 09:57:08 2005
From: skip at pobox.com (Skip Montanaro)
Date: Thu, 12 May 2005 08:57:08 -0500
Subject: Python Documentation (should be better?)
In-Reply-To: <4282D0C5.3A8B3786@pauahtun.org>
References: <5C99C308457E6D4EA5448EA52A66004A675A6E@or.mxim.com>
	<17026.26789.592527.975821@montanaro.dyndns.org>
	<mailman.398.1115843305.29826.python-list@python.org>
	<428276e8$0$318$626a14ce@news.free.fr>
	<mailman.411.1115854727.29826.python-list@python.org>
	<lvudnZwSQdrDAh_fRVn-sQ@comcast.com>
	<4282A5DF.44C84B18@pauahtun.org> <d5u8mk$k6n$1@sea.gmane.org>
	<4282D0C5.3A8B3786@pauahtun.org>
Message-ID: <17027.24756.661979.410118@montanaro.dyndns.org>


    Ivan> I get that.  My question, cleverly concealed in a rant, was, "Why
    Ivan> does clicking on the Documentation link at python.org NOT take me
    Ivan> to docs.python.org?"

I almost changed that link, but then reconsidered.  Compare

    http://docs.python.org/

with

    http://www.python.org/docs/

The former is just the main documentation that's part of the Python
distribution.  The latter contains links to lots of supplementary material,
much of which is not part of python.org.

The original functional goal of the http://docs.python.org/ URL was to
provide a cleaner isolation of "just the facts, Ma'am" so that Google could
do a better job presenting documentation search results.  Previously, it was
impossible to separate the mailing list archives from the documentation
proper in Google searches.

Skip


From franz.steinhaeusler at utanet.at  Tue May  3 03:03:29 2005
From: franz.steinhaeusler at utanet.at (Franz Steinhaeusler)
Date: Tue, 03 May 2005 09:03:29 +0200
Subject: Which IDE is recommended?
References: <426f90ac$1_2@rain.i-cable.com>
	<9f7v619jhigbtoksslnr88f4idoc6ejvu3@4ax.com>
	<1115039282.069052.287920@o13g2000cwo.googlegroups.com>
	<ccac7115br3kqki0dpqic9pb673h5ghvql@4ax.com>
	<1115047308.550787.132130@f14g2000cwb.googlegroups.com>
Message-ID: <lg7e715srcda07ombabmi5qr0i0m9o0en2@4ax.com>

On 2 May 2005 08:21:48 -0700, "dcrespo" <dcrespo at gmail.com> wrote:

>Hi. You were right: I meant "Code Completition". I did what you told me
>to do. I get now auto completition of code.
>For example:
>
>import wx
>wx.(here appear a list with the possibilities)
>
>But.... (there's always a "but") with:
>
>button = wx.Button(...)
>
>when I write "button." there's a flick of the list of the possible
>parameters, resulting in no showing it. Is there a way to correct it?
>
>Daniel

Hi,

I personally don't use it.

Hm, because of drpython is "weak" typed, that is not so easy.
It would require an "extra" parsing of the current document.

Anyway this could be a feature request and I put it into
sf tracker.

Stani's Python Editor and Boa Constructor doesn't (seem) support this
too.

-- 
Franz Steinh?usler
http://drpython.sourceforge.net/
http://mitglied.lycos.de/drpython/


From mage at mage.hu  Thu May  5 07:23:58 2005
From: mage at mage.hu (Mage)
Date: Thu, 05 May 2005 13:23:58 +0200
Subject: postgresql plpython bug
In-Reply-To: <1115248048.454641.263020@f14g2000cwb.googlegroups.com>
References: <mailman.9.1115223260.29826.python-list@python.org>
	<1115248048.454641.263020@f14g2000cwb.googlegroups.com>
Message-ID: <427A024E.7010007@mage.hu>

Jonathan Ellis wrote:

>
>First, you don't give enough context to see where your python code
>generates a timestamp, but in any case it's more of a limitation than a
>bug that plpython doesn't try to autoconvert certain datatypes.  (Are
>you even returning a datetime class, or a string?)
>  
>
I gave (almost) all the required information because my function doesn't
generates any timestamp.
I did not make any work with the timestamp field, it was only sent back
with return 'MODIFY'

Finally I found the source of the bug. It's not in plypython but it is
in plperl. I call a plperl stored procedure in my plpython stored
procedure. I won't do it anymore.

Below is the sample script which produces the bug. I have to set the
locale in plperl same to the server locales because buggy plperl 
doesn't see the database server locales (which plpsql and plpython
does). I sent this issue to the general pgsql mailing list earlier.

The funny thing that this plperl bug was one of the reasons of my first
python adventures.

--------

create table test (id int, date timestamp);

create or replace function trigger_test() returns trigger as $$
plpy.info(TD['new'])
return 'MODIFY'
$$ language plpythonu;

create trigger test_update before update on test for each row execute
procedure trigger_test();

insert into test values (1, now());
insert into test values (2, now());

update test set id = 3;

create or replace function test_perl() returns boolean as $$
    use locale;
    use POSIX qw(locale_h);
    setlocale(LC_COLLATE,'hu_HU');
    setlocale(LC_CTYPE,'hu_HU');
    setlocale(LC_NUMERIC,'hu_HU');
    return True
$$ language plperlu;

create or replace function trigger_test() returns trigger as $$
plpy.info(TD['new'])
plpy.execute('select * from test_perl()')
return 'MODIFY'
$$ language plpythonu;

update test set id = 4;

---------


CREATE TABLE
CREATE FUNCTION
CREATE TRIGGER
INSERT 9138862 1
INSERT 9138863 1
INFO:  ({'date': '2005-05-05 13:20:43.793551', 'id': 3},)
INFO:  ({'date': '2005-05-05 13:20:43.794401', 'id': 3},)
UPDATE 2
CREATE FUNCTION
CREATE FUNCTION
INFO:  ({'date': '2005-05-05 13:20:43.793551', 'id': 4},)
ERROR:  invalid input syntax for type timestamp: "2005-05-05
13:20:43.793551"

-------

       Mage




From has.temp2 at virgin.net  Thu May 12 16:03:55 2005
From: has.temp2 at virgin.net (has)
Date: 12 May 2005 13:03:55 -0700
Subject: Problem combining python code and html
In-Reply-To: <42822b3d$0$653$ba624c82@nntp02.dk.telia.net>
References: <42822b3d$0$653$ba624c82@nntp02.dk.telia.net>
Message-ID: <1115928234.948073.153540@f14g2000cwb.googlegroups.com>

Hansan wrote:

> And is there a nother way to combine python code and html templates?

There's a decent list of Python templating engines at:

http://www.python.org/moin/WebProgramming

Look about a third of the way down down under "Variable
Insertion-Replacement Templating Applications (Pre-processors)". The
title is ridiculous but the links are sound.

HTH



From http  Thu May 12 15:25:17 2005
From: http (Paul Rubin)
Date: 12 May 2005 12:25:17 -0700
Subject: pyvm -- faster python
References: <m102l2-9qr.ln1@home.rogerbinns.com>
	<mailman.264.1115716603.29826.python-list@python.org>
	<vu38l2-k5v.ln1@home.rogerbinns.com>
	<7xvf5qbir1.fsf@ruckus.brouhaha.com>
	<nt98l2-1e.ln1@home.rogerbinns.com>
	<7xpsvymlse.fsf@ruckus.brouhaha.com>
	<1115791624.856252.247890@z14g2000cwz.googlegroups.com>
	<7x1x8el18e.fsf@ruckus.brouhaha.com>
	<3eg2vnF2psplU1@individual.net>
	<7xis1pqdt0.fsf@ruckus.brouhaha.com>
	<mailman.466.1115908386.29826.python-list@python.org>
Message-ID: <7xfyws8cwy.fsf@ruckus.brouhaha.com>

Fran?ois Pinard <pinard at iro.umontreal.ca> writes:
> Deep down, why or how not having a [traditional, to-native-code]
> compiler is a deficiency for CPython?  We already know that such a beast
> would not increase speed so significantly, while using much more memory.

I'd say the opposite.  The 4x speedup from Psyco is quite significant.
The speedup would be even greater if the language itself were more
compiler-friendly.

> So far, it seems that the only way to get speed is to attach static
> type information to some variables.  

No of course not, there's quite a bit of overhead in interpretation in
general.  Plus, having to do a dictionary lookup for 'bar' in every
call like foo.bar() adds overhead and I don't think I'd call fixing
that as similar to adding static type info.

> Some compilation avenues do it through information added either in
> Python source code or in extraneous declarative files, other
> approaches do it by delaying compilation until such information is
> discovered at run-time.

Also, lots of times one can do type inference at compile time.

> The former taints the purity of real CPython as the only source.

I don't understand this.  What purity?  Why is real CPython the
only source?  There are dozens of C compilers and none of them is
the "only source".  Why should Python be different?


From chrispatton at gmail.com  Sun May  1 18:18:59 2005
From: chrispatton at gmail.com (chris patton)
Date: 1 May 2005 15:18:59 -0700
Subject: sys.stdout question
Message-ID: <1114985939.702426.114490@f14g2000cwb.googlegroups.com>

>>> import sys
>>> class stuff:
...       things = []
...       def write(self, string):
...               self.things.append(string)
...
>>> def_stdout = sys.stdout
>>> sys.stdout = stuff()
>>> print 'this is a string.'
>>> print 'This is another string.'
>>> sys.stdout = def_stdout
>>> print stuff.things
['This is a string.', '\n', 'This is another string.', '\n']

Where are the newline characters coming from?



From roccomoretti at hotpop.com  Thu May 12 17:07:58 2005
From: roccomoretti at hotpop.com (Rocco Moretti)
Date: Thu, 12 May 2005 16:07:58 -0500
Subject: pyvm -- faster python
In-Reply-To: <7xbr7g8cni.fsf@ruckus.brouhaha.com>
References: <mailman.164.1115548611.29826.python-list@python.org>
	<1115561483.741761.212140@f14g2000cwb.googlegroups.com>
	<m102l2-9qr.ln1@home.rogerbinns.com>
	<mailman.264.1115716603.29826.python-list@python.org>
	<vu38l2-k5v.ln1@home.rogerbinns.com>
	<7xvf5qbir1.fsf@ruckus.brouhaha.com>
	<nt98l2-1e.ln1@home.rogerbinns.com>
	<7xpsvymlse.fsf@ruckus.brouhaha.com>
	<1115791624.856252.247890@z14g2000cwz.googlegroups.com>
	<7x1x8el18e.fsf@ruckus.brouhaha.com>
	<3eg2vnF2psplU1@individual.net>
	<7xis1pqdt0.fsf@ruckus.brouhaha.com>
	<pan.2005.05.12.15.53.10.176970@dalkescientific.com>
	<7xbr7g8cni.fsf@ruckus.brouhaha.com>
Message-ID: <d60gjc$9co$1@news.doit.wisc.edu>

Paul Rubin wrote:

> Despite the shrieks of the "Python is not Lisp!" crowd, Python
> semantics and Lisp semantics aren't THAT different, and yet compiled
> Lisp implementations com completely beat the pants off of interpreted
> Python in terms of performance.  

I know little about Lisp compilation, so I could be mistaken, but I was 
under the impression that one of the differences between Python & Lisp 
is directly relevant to compilation issues.

Python, as a procedural language, makes extensive use of globals & 
mutable variables. Not only can the contents of a variable change, but 
that change can non-explicitly affect a function in a "remote" part of 
the program, hence the requirement for the Global Interpreter Lock. 
Tracking how changes propagate in Python is non-trivial, as evidenced by 
the difficulty of replacing the GIL with a less "obtrusive" alternative.

IIUC, in Lisp, as a functional language, "all politics is local." 
Global-like variables are much rarer, and mutability is severely 
limited. In this case it is much easier to track how a piece of code 
alters the program's state - the propagation of those changes are 
handled explicitly, and once you have a reference to a piece of data, 
you don't have to worry about some other function changing the value on 
you. As such, it's a lot easier to write an optimizing compiler - you 
can place much greater limits on what is known at compile time.

It's been quite a while since I've looked at Lisp/functional languages, 
though, so I could be misunderstanding what I remember.


From discussion.support at autodesk.com  Tue May  3 09:49:59 2005
From: discussion.support at autodesk.com (Isaac Rodriguez)
Date: Tue, 3 May 2005 09:49:59 -0400
Subject: Documenting Python code.
Message-ID: <1115128200.628997@hqnntp01.autodesk.com>

Hi,

Are there any standarized ways of documenting Python code? When I check the 
__doc__ attribute of the standard modules, the results are kind of plain. Is 
everyone using this style?

Since Python is a very powerful language parsing strings, replacing 
expressions, and processing XML, I was wondering if people documents the 
code using constructs similar to JavaDoc and then use some functions to 
display the documentation with a little bit more of structure.

Python is a dynamically typed language, which makes me think of the 
importance of documenting not only the purpose of a particular function or 
class method, but also what requirements should be met by the objects passed 
as parameters, what will the function return, and what type of erros can 
happen. I don't see any of this information in the __doc__ attributes, so I 
was wondering if people is using some other way to document their code.

If there is no standard way to do this inside the Python community, does 
anyone feels there is a need for standarizing it?

Thanks,

-- 
Isaac Rodriguez
SWE Autodesk.
========================================
There are 10 types of people.
Those who undertand binary, and those who don't 




From fredrik at pythonware.com  Thu May 26 04:07:08 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 26 May 2005 10:07:08 +0200
Subject: Strange Execution Times
References: <1117088059.588457.200270@z14g2000cwz.googlegroups.com>
Message-ID: <d73vvn$e36$1@sea.gmane.org>

<curi42 at gmail.com> wrote:

>I am running two functions in a row that do the same thing.  One runs
> in .14 seconds, the other 56.  I'm confused.  I wrote another version
> of the program and couldn't get the slow behavior again, only the fast.
> I'm not sure what is causing it.  Can anyone figure it out?

it would be a lot easier to help if you posted a self-contained example.

</F> 





From martin at v.loewis.de  Wed May 18 13:35:08 2005
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Wed, 18 May 2005 19:35:08 +0200
Subject: iso_8859_1 mystery/tkinter
In-Reply-To: <mailman.154.1116432329.8733.python-list@python.org>
References: <mailman.154.1116432329.8733.python-list@python.org>
Message-ID: <428B7CCC.4010704@v.loewis.de>

phil wrote:
> These work fine on Linux
>         s.const = {}
>         s.const['DEG'] = '%c' % (0xb0)
>         s.const['DIV'] = '%c' % (0xf7)
>         s.const['ANG'] = '%c' % (0xd8)
> 
> On WinXP the symbols for division and angle work fine.
> But the symbol for degrees, a little circle, produces
> a vertical bar in Tkinter Text box or Canvas.

I don't understand what you mean by that. Do you have
the symbol for degrees in your source code (so that
the editor for the source code displays it as a little
circle)? Or do you use the numeric code?

Can you show a small program that demonstrates this
effect?

Regards,
Martin



From kay.schluehr at gmx.net  Fri May  6 04:31:48 2005
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: 6 May 2005 01:31:48 -0700
Subject: Hard times with packages and instances
References: <1115306696.185751.234020@o13g2000cwo.googlegroups.com>
	<1115358150.572169.241530@z14g2000cwz.googlegroups.com>
	<mailman.85.1115365647.29826.python-list@python.org>
Message-ID: <1115368308.775978.106910@g14g2000cwa.googlegroups.com>

Fredrik Lundh wrote:
> Kay Schluehr wrote:
>
> > > if you manage to import the same thing multiple times, you'll
have
> > > multiple class objects representing the same source code, and is-
> > > instance won't work properly.
> >
> > Importing a class/module multiple times does not cause the problem.
> > Writing
> >
> >   import ForeignPackage.B as B1
> >   import ForeignPackage.B as B2
>
> that doesn't import it more than once; Python uses a cache to hold
> modules, but the cache only works if Python can be sure that the
> modules are the same thing, based on the information in the *import*
> statement.  in this case, "ForeignPackage.B" is clearly the same
thing
> as "ForeignPackage.B".

Yes, that's what I did expect.

> if you change the path around (in your case, by adding MyPackage to
> the path, rather than relying on path-relative import), you'll
introduce
> multiple ways to import the same module, and the cache won't work
> properly.  and when the cache doesn't work, isinstance breaks down
> for the reason I stated.

Exactly. "ForeignPackage.B" and "MyPackage.ForeignPackage.B" are two
paths pointing to the same module but it will be imported twice because
the cache does not lookup a strong name ( e.g. a hash of the module )
but the import path. This may also be the reason why it is not possible
to import a module in an interactive session, than edit it and finally
re-import it into the same running session. The hash value would have
been changed but the path remains the same.

>
> > Flattening the package structure would solve the problem as well as
> > destroying all file-system based packages and abandon them from
Python.
>
> well, packages for just fine for me.

In some cases they do, in other they don't. The __me__.py module comes
from working with ClearCase where the Python package is not installed
by an installation routine relative to an existing Python path. The
package has to recognize it's own position somewhere relative to the
virtual directory which can be arbitrary. Installing the package under
site-packages/ is a no go.

> if you cannot get them to work,
> maybe you should stop doing things that don't work.

For shure, but people tend to do workarounds. So I did.

Regards,
Kay



From sarapythonlist at yahoo.com  Tue May 10 05:21:00 2005
From: sarapythonlist at yahoo.com (Sara Khalatbari)
Date: Tue, 10 May 2005 02:21:00 -0700 (PDT)
Subject: Module on Getting the Date & Time
Message-ID: <20050510092100.32410.qmail@web61108.mail.yahoo.com>

Is there a Modules in Python that returns the time &
date of today when ran?








	
		
__________________________________ 
Do you Yahoo!? 
Yahoo! Mail - You care about security. So do we. 
http://promotions.yahoo.com/new_mail


From bearophileHUGS at lycos.com  Mon May  9 20:26:16 2005
From: bearophileHUGS at lycos.com (bearophileHUGS at lycos.com)
Date: 9 May 2005 17:26:16 -0700
Subject: Unique Elements in a List
In-Reply-To: <1115679662.521731.297510@f14g2000cwb.googlegroups.com>
References: <1115676903.432187.294910@z14g2000cwz.googlegroups.com>
	<1115678197.064079.28220@o13g2000cwo.googlegroups.com>
	<1115679662.521731.297510@f14g2000cwb.googlegroups.com>
Message-ID: <1115684776.538307.141430@f14g2000cwb.googlegroups.com>

runes:

> d = {}
> for k in data:
>     try:
>         d[k] += 1
>     except:
>         d[k] = 1
>
> for k,v in d.items():
>     if v == 1:
>         print k

For this problem, if duplicated keys are common enough, this version is
probably the faster.

With this *different* problem, it seems that sometimes the faster
solution is using "in":
http://pyalot.blogspot.com/2005/04/dictionary-speed.html

Bye,
Bearophile



From rbt at athop1.ath.vt.edu  Tue May 17 14:34:40 2005
From: rbt at athop1.ath.vt.edu (rbt)
Date: Tue, 17 May 2005 14:34:40 -0400
Subject: os.popen vs os.system
In-Reply-To: <DN2dnbQrn7HQqhffRVn-vg@powergate.ca>
References: <d6dasg$32r$1@solaris.cc.vt.edu>
	<DN2dnbQrn7HQqhffRVn-vg@powergate.ca>
Message-ID: <d6ddg0$79a$2@solaris.cc.vt.edu>

Peter Hansen wrote:
> You can't be doing exactly that, since there are no sockets involved... 
> do you mean the above call is executed -- on the receiving end -- after 
> some signal is received via a socket in another part of the code? That's 
> not going to have any effect on things...

Here's the server portion:

from email.MIMEText import MIMEText
import email.Utils
import os
import smtplib
import socket
import sys
import time

def get_server_ip():
     server = socket.gethostbyname(socket.gethostname())
     return server

def set_server_port():
     ## Using "port = 0" will cause a random port to be chosen
     port = 0
     return port

def listen(ip_param, port_param):

     def send_params(ip_param, port_param):
         ## This function will send the network parameters.
         ## Change the to and from email addys.
         f = "XXX<xxx at somewhere.com>"
         t = "someone at somewhere.com"
         msg = MIMEText("""Server IP: %s\nServer Port: %s""" 
%(ip_param,port_param))

         msg["Subject"] = "%s Listening" %socket.gethostname()
         msg["Message-id"] = email.Utils.make_msgid()
         msg["From"] = f
         msg["To"] = t

         h = "smtp.vt.edu"
         s = smtplib.SMTP(h)
         s.sendmail(f, t, msg.as_string())
         s.quit()

     s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
     try:
         s.bind((ip_param, port_param))
     except socket.error:
         sys.exit("IP & Port Already in use.")
     ip, port = s.getsockname()
     print "Server", ip, "is listening for connections on port", port
     send_params(ip, port)
     while 1:
         print "\nWaiting for new connection...\n"
         s.listen(1)
         conn, addr = s.accept()
         print "Client", addr[0], "connected and was directed to port", 
addr[1]
         data = conn.recv(1024)
         print "Client sent this message:", data
         if data == 'shutdown -r -f':
             print data
##            restart = os.popen('shutdown -r -f')
##            print restart.read()
##            restart.close()
         elif data == 'shutdown -a':
             print data
##            abort = os.popen('shutdown -a')
##            abort.read()
##            abort.close()
         else:
             print "No valid command received."
         conn.close()

# Start the Program

ip = get_server_ip()
port = set_server_port()

listen(ip, port)



From sjmachin at lexicon.net  Tue May  3 18:40:44 2005
From: sjmachin at lexicon.net (John Machin)
Date: Wed, 04 May 2005 08:40:44 +1000
Subject: text strings to binary...
References: <1115149191.862429.51610@g14g2000cwa.googlegroups.com>
Message-ID: <3fuf71hdbkdkehtfs9fl9jdnogc0ql6ong@4ax.com>

On 3 May 2005 12:39:51 -0700, oriana.falco at thalesesec.com wrote:

>Hi,
>
>I've been working with Python for a bit now but I just came accross a
>problem and I'm not sure how to approach it. I'd like to convert a text
>string into binary data format. I though I'd use the struct module and
>the pack function but I can't get it to work.

"string to binary" tends to suggest "unpack", not "pack".

For example, you have read a 6-byte string from a file. You know that
it contains 3 x 2-byte unsigned integers in little-endian order.

>>> b6 = '\x01\x00\x00\x01\x02\x03'
>>> struct.unpack('<HHH', b6)
(1, 256, 770)
>>>

>From binary to string:

>>> struct.pack('<HHH', *(1, 256, 770))
'\x01\x00\x00\x01\x02\x03'
>>>


> I'm using Python 2.3.3 in
>Windows XP.

It's quite irrelevant to your question, but is there any good reason
why you're not using 2.4.1? If you *really* need to be on 2.3.x,
consider x == 5 -- that's 2 lots of bugfixes and IIRC a security patch
later than 2.3.3.

Cheers,
John



From aahz at pythoncraft.com  Tue May 10 14:24:25 2005
From: aahz at pythoncraft.com (Aahz)
Date: 10 May 2005 11:24:25 -0700
Subject: Unique Elements in a List
References: <1115676903.432187.294910@z14g2000cwz.googlegroups.com>
	<mailman.241.1115681580.29826.python-list@python.org>
	<87psvzikjk.fsf@titan.staselog.com>
Message-ID: <d5qu8p$2iq$1@panix2.panix.com>

In article <87psvzikjk.fsf at titan.staselog.com>,
Edvard Majakari  <edvard+news at majakari.net> wrote:
>James Stroud <jstroud at mbi.ucla.edu> writes:
>>
>> from sets import Set
>>
>> data = [0.1,0.5,0.6,0.4,0.1,0.5,0.6,0.9]
>>
>> [x for x in Set(data) if data.count(x) == 1]
>
>Um.
>
>...I must have missed something, but I'll post nevertheless:
>
>wouldn't just
>
>[x for x in data if data.count(x) == 1]
>
>suffice? it is also "stable"  preserving order of items. Lemme demo:

Only for small datasets -- this is an O(N^2) algorithm.
-- 
Aahz (aahz at pythoncraft.com)           <*>         http://www.pythoncraft.com/

"And if that makes me an elitist...I couldn't be happier."  --JMS


From rbt at athop1.ath.vt.edu  Mon May 16 14:16:08 2005
From: rbt at athop1.ath.vt.edu (rbt)
Date: Mon, 16 May 2005 14:16:08 -0400
Subject: Newbie : checking semantics
In-Reply-To: <87br7bunsk.fsf@snobis.de>
References: <1115503520.392357.230620@f14g2000cwb.googlegroups.com>
	<87d5rrsh7h.fsf@snobis.de>
	<pan.2005.05.16.13.58.07.671337@dalkescientific.com>
	<d6a997$eh4$1@solaris.cc.vt.edu> <87br7bunsk.fsf@snobis.de>
Message-ID: <d6ao19$cjh$1@solaris.cc.vt.edu>

Stefan Nobis wrote:
> rbt <rbt at athop1.ath.vt.edu> writes:
> 
> 
>>True beginners (no programming experience whatsoever) don't have
>>to deal with unlearning stuff such as the bracket plague.
> 
> 
> That's true. But they also not very used to give nothing (->
> whitespace) a meaning. I teached quite some beginners and most of
> them had problems to get the indentation right.
> 
> At least in the very beginning IMHO it would be useful to
> explicitly end a block with some kind of an end statement.

You have a very good point. Understanding the flow of a program and the 
indentation or brackets that go with logical blocks of code would be 
difficult for those who have never had to think like a programmer before 
to grasp.

Have you read the book titled, "How to think like a Computer Scientist"? 
It's very good for true beginners and it's free. It uses Python too. 
It's good at teaching scope and how to recognize blocks of code.

> 
> Meaningful whitespache is not a big problem (as many people seems
> to think) but it's also not very obvious and sometimes it causes
> at least a little bit trouble.
> 


From gh at ghaering.de  Fri May 27 10:00:56 2005
From: gh at ghaering.de (Gerhard Haering)
Date: Fri, 27 May 2005 16:00:56 +0200
Subject: write to the same file from multiple processes at the same time?
In-Reply-To: <roy-75EA44.09273827052005@reader1.panix.com>
References: <e3617$429713d7$3eb01f24$9096@news.flashnewsgroups.com>
	<roy-29C1D4.09142527052005@reader1.panix.com>
	<XOqdnU5dNq_vgwrfRVn-rg@powergate.ca>
	<roy-75EA44.09273827052005@reader1.panix.com>
Message-ID: <20050527140056.GB6770@mylene.ghaering.de>

On Fri, May 27, 2005 at 09:27:38AM -0400, Roy Smith wrote:
> Peter Hansen <peter at engcorp.com> wrote:
> > The OP was probably on the right track when he suggested that things 
> > like SQLite (conveniently wrapped with PySQLite) had already solved this 
> > problem.
> 
> Perhaps, but a relational database seems like a pretty heavy-weight 
> solution for a log file.

On the other hand, it works ;-)

-- Gerhard
-- 
Gerhard H?ring - gh at ghaering.de - Python, web & database development
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From rbt at athop1.ath.vt.edu  Fri May 27 11:49:43 2005
From: rbt at athop1.ath.vt.edu (rbt)
Date: Fri, 27 May 2005 11:49:43 -0400
Subject: cpu usage limit
In-Reply-To: <d77dt7$2lqn$1@ns.felk.cvut.cz>
References: <1117206216.695085.282510@g44g2000cwa.googlegroups.com>
	<d77d4c$21a$1@solaris.cc.vt.edu> <d77dt7$2lqn$1@ns.felk.cvut.cz>
Message-ID: <d77fin$678$1@solaris.cc.vt.edu>

garabik-news-2005-05 at kassiopeia.juls.savba.sk wrote:
> rbt <rbt at athop1.ath.vt.edu> wrote:
> 
>>mf wrote:
>>
>>>Hi.
>>>
>>>My problem:
>>>How can I make sure that a Python process does not use more that 30% of
>>>the CPU at any time. I only want that the process never uses more, but
>>>I don't want the process being killed when it reaches the limit (like
>>>it can be done with resource module).
>>>
>>>Can you help me?
>>>
>>>Thanks in advance.
>>>
>>>Best regards,
>>>Markus
>>>
>>
>>Are you looping during a cpu intensive task? If so, make it sleep a bit 
>>like this:
>>
>>for x in cpu_task:
>>    time.sleep(0.5)
>>    do(x)
> 
> 
> or like this (untested!)
> 
> finished = False
> while not finished:

Why don't you just write 'while True'??? 'while not false' is like 
saying 'I am not unemployed by Microsoft' instead of saying 'I am 
employed by Microsoft'. It's confusing, complex and unnecessary. Lawyers 
call it circumlocution (talking around the truth).

>   before = time.time()
>   do(x) # sets finished if all was computed
>   after = time.time()
>   delta = after-before
>   time.sleep(delta*10/3.)
> 
> now the trick: do(x) can be a single piece of code, with strategically placed yield's
> all over....
> 
> 
> 


From duncan.booth at invalid.invalid  Sun May 29 10:04:34 2005
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 29 May 2005 14:04:34 GMT
Subject: Is there a better way of doing this?
References: <d79re2$sgg$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
Message-ID: <Xns9665995AD9778duncanbooth@127.0.0.1>

Michael wrote:

> I'm fairly new at Python, and have the following code that works but
> isn't very concise, is there a better way of writing it?? It seems
> much more lengthy than python code i have read..... :-)
> (takes a C++ block and extracts the namespaces from it)

Yes, there is a better way to write the code, but I'm afraid that the 
better way will be much longer rather than shorter. Your code is trying to 
pick up a complete C++ block by counting the opening and closing braces, 
but this will break as soon as you have a brace character inside a string 
or a comment.

The better solution would be to use a full blown parser, or at least a 
lexer which recognises comments and strings. There are several parsing 
packages for Python, you might like to look at Ply 
(http://www.dabeaz.com/ply/) since that comes with a sample lexer for Ansi 
C, and if you added some extra keywords (such as namespace) you could then 
just treat your input as a token stream.



From ivoras at fer.hr  Fri May  6 11:07:22 2005
From: ivoras at fer.hr (Ivan Voras)
Date: Fri, 06 May 2005 17:07:22 +0200
Subject: Encryption with Python?
In-Reply-To: <1115324411.952821.150780@o13g2000cwo.googlegroups.com>
References: <1115324411.952821.150780@o13g2000cwo.googlegroups.com>
Message-ID: <d5g18c$iha$1@bagan.srce.hr>

Blake T. Garretson wrote:
> I want to save some sensitive data (passwords, PIN numbers, etc.) to
> disk in a secure manner in one of my programs.  What is the
> easiest/best way to accomplish strong file encryption in Python?  Any
> modern block cipher will do: AES, Blowfish, etc.  I'm not looking for
> public key stuff; I just want to provide a pass-phrase.

There's a pure python Blowish implementation at:
http://bofh.concordia.ca/blowfish.py

(It looks like you'll have to divide your data in 8 byte blocks 
yourself, and pad the last block)


From fredrik at pythonware.com  Sun May 29 07:59:13 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Sun, 29 May 2005 13:59:13 +0200
Subject: Is there a better way of doing this?
References: <d79re2$sgg$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
	<pan.2005.05.29.11.42.53.412990@REMOVETHIScyber.com.au>
Message-ID: <d7calv$53c$1@sea.gmane.org>

Steven D'Aprano wrote:

> Guido (our Benevolent Dictator For Life and creator of Python) hates
> seeing whitespace next to parentheses. I agree with him. while(newNS)
> good, while( newNS ) bad.

while is a statement, so while(newNS) is bad in more than one way.

</F>





From beliavsky at aol.com  Fri May 20 23:02:16 2005
From: beliavsky at aol.com (beliavsky at aol.com)
Date: 20 May 2005 20:02:16 -0700
Subject: first release of PyPy
References: <mailman.264.1116625088.8733.python-list@python.org>
	<1116629407.638782.145950@g47g2000cwa.googlegroups.com>
Message-ID: <1116644536.741250.249860@g44g2000cwa.googlegroups.com>

Kay Schluehr wrote:
> holger krekel wrote:
> > Welcome to PyPy 0.6
> > --------------------
> >
> > *The PyPy Development Team is happy to announce the first
> > public release of PyPy after two years of spare-time and
> > half a year of EU funded development.  The 0.6 release
> > is eminently a preview release.*
>
> Congratulation to You and Your team!
>
> PyPy is really awesome and if it succeeds in speed demands after the
> translation phase I believe that the project will shift the power
> within the Python community on the long run.

Could you please explain this statement? Who will gain power, and who
will lose it? Are you suggesting that CPython and PyPy developers are
competing?



From paschott at no.yahoo.spamm.com  Tue May  3 15:12:07 2005
From: paschott at no.yahoo.spamm.com (Peter A. Schott)
Date: Tue, 03 May 2005 19:12:07 GMT
Subject: Best way to parse file into db-type layout?
References: <cis2715rq97gb4taalf81ab33qmif2r4qr@4ax.com>
	<a6v2711u3hft7ed2ft95gqiggi2cnaak2r@4ax.com>
	<32r471h0nnq5aieeip6p83bpo54fcv9ooq@4ax.com>
	<b995711n9svdg1ajo5v63b2457u5j30odi@4ax.com>
Message-ID: <rlif71ht0tmlt4t5h0rftkv3soofi06edv@4ax.com>

Thanks for the comments.  Quick notes:
1.  Yes, ultimate goal is to output various fields into Excel, but I need to
enter the data into a DB as well to avoid having any strange problems.  That may
be handled by a completely different process.  I should have been more exact in
saying that my current goal is to get this data into a database.

2.  I'm relatively new to Python and definitely new to trying to parse
Ragged-right type CSV files that are pairs of data.  I'm trying to get my syntax
correct when wording my questions/phrases - please bear with me.  :-)  Your help
(all posters) is quite appreciated.

3.  regarding read/write each row - I started thinking about working my way
through the dictionary.  This file could have up to 1900 pairs of data per row.
That's an awful lot of columns to put into a database table, especially if quite
a few will be NULL.  I starting thinking of stepping through each pair by each
row.  The rows are identified by Letter type and an account number (always the
same field #).  I would want to use those, and insert something like:
LetterType, Account #, Field#, Field Data, (current date)
	I wasn't quite sure how to phrase that and apologize for being unclear.  I
guess if I'm doing row-by-row, I can hold that for each row without too much
trouble.

4.  No control over file format.  I can define a lookup table that will match
Field# to a real name, perhaps code that into my scripts, but I'm stuck with
that.  As to other posters' responses - it's ANSI-coded, CSV, No Quotes (no
Commas in values).  Coming from the mainframe, I don't have to worry about
embedded special characters within the file as they can't be entered into these
fields to start with.
	File always starts with letter_type, 1 - no idea why they didn't do that as
0, letter_type for consistency but it isn't my file.  (Heck, I would have just
specified to output all fields all the time and avoid any need to do special
parsing :-)

Anyway, I appreciate the help.  The code looks like it will work for me and I'll
be doing some basic tests to get up to speed on splitting/parsing the data and
putting it into a form that will be usable by all.  I may have to write certain
rows out to a new file if they don't match what I'm looking for.  I don't
anticipate any issues there - just read the row, write it to a new file if it
doesn't match my criteria.

Thanks to all.  Off to search for dictionaries and databases now.  :-)

-Pete

John Machin <sjmachin at lexicon.net> wrote:

> On Fri, 29 Apr 2005 18:54:54 GMT, Peter A. Schott
> <paschott at no.yahoo.spamm.com> wrote:
> 
> >That looks promising.
> 
> > The field numbers are pre-defined at the mainframe level.
> 
> Of course. Have you managed to acquire a copy of the documentation, or
> do you have to reverse-engineer it?
> 
> >This may help me get to my ultimate goal which is to pump these into a DB on a
> >row-by-row basis ( :-P  ) 
> 
> That's your *ultimate* goal? Are you running a retro-computing museum
> or something? Don't you want to *USE* the data?
> 
> > I'll have to do some playing around with this.  I
> >knew that it looked like a dictionary, but wasn't sure how best to handle this.
> >
> >One follow-up question:  I'll end up getting multiple records for each "type".
> 
> What does that mean?? If it means that more than one customer will get
> the "please settle your account" letter, and more than one customer
> will get the "please buy a spangled fritzolator, only $9.99" letter,
> you are stating the obvious -- otherwise, please explain.
> 
> >Would I be referencing these by row[#][field#]?
> 
> Not too sure what you mean by that -- whether you can get away with a
> (read a row, write a row) way of handling the data depends on its
> structure (like what are the relationships if any between different
> rows) and what you want to do with it -- both murky concepts at the
> moment.
> 
> >
> >Minor revision to the format is that starts like:
> >###,1,1,val_1,....
> 
> How often do these "minor revisions" happen? How flexible do you have
> to be? And the extra "1" means what? Is it ever any other number?
> 
> >
> >
> >I think right now the plan is to parse through the file and insert the pairs
> >directly into a DB table.  Something like RowID, LetterType, date, Field#,
> >Value.
> 
> Again, I'd recommend you lose the "Field#" in favour of a better
> representation, ASAP.
> 
> >  I can get RowID and LetterType overall, date is a constant, the rest
> >would involve reading each pair and inserting both values into the table.  Time
> >to hit the books a little more to get up to speed on all of this.
> 
> What you need is (a) a clear appreciation of what you are trying to do
> with the data at a high level (b) then develop an understanding of
> what is the underlying data model (c) then and only then worry about
> technical details.
> 
> Good luck,
> John
> 



From danb_83 at yahoo.com  Wed May  4 01:56:15 2005
From: danb_83 at yahoo.com (Dan Bishop)
Date: 3 May 2005 22:56:15 -0700
Subject: control precision for str(obj) output?
References: <d598rq$8fj$1@joe.rice.edu><864qdj90vd.fsf@guru.mired.org>
	<pan.2005.05.04.05.26.11.56711@dalkescientific.com>
Message-ID: <1115186175.778899.48610@f14g2000cwb.googlegroups.com>

Andrew Dalke wrote:
> Mike Meyer wrote:
> > Someone want to tell me the procedure for submitting FAQ entries,
so I
> > can do that for this?
>
> You mean more than what already exists at
>
http://www.python.org/doc/faq/general.html#why-are-floating-point-calculations-so-inaccurate
>
> which has a link to an even more detailed chapter in the tutorial at
>   http://docs.python.org/tut/node16.html

Yes.  Those pages explain why repr(0.2) != '0.2', but they don't
explain why str([x]) != '[%s]' % x .



From chrispatton at gmail.com  Mon May  2 16:50:29 2005
From: chrispatton at gmail.com (chris patton)
Date: 2 May 2005 13:50:29 -0700
Subject: sys.stdout question
In-Reply-To: <mailman.1.1114987901.6583.python-list@python.org>
References: <1114985939.702426.114490@f14g2000cwb.googlegroups.com>
	<mailman.1.1114987901.6583.python-list@python.org>
Message-ID: <1115067029.782290.62730@g14g2000cwa.googlegroups.com>

I tried adding the comma at the end
print 'hello', 
It still added that extra character.



From noah at noah.org  Fri May  6 16:50:20 2005
From: noah at noah.org (Noah)
Date: 6 May 2005 13:50:20 -0700
Subject: Running python cgi scripts that require external cvs under apache
In-Reply-To: <1115407482.721652.281390@o13g2000cwo.googlegroups.com>
References: <1115407482.721652.281390@o13g2000cwo.googlegroups.com>
Message-ID: <1115412620.427313.298580@f14g2000cwb.googlegroups.com>

How do you run the cvs binary from your script? If this is a simple CGI
that calls os.popen() or os.system() then the cvs binary is most likely
running as the same user as the Apache HTTP server (usually someone
like "nobody", "apache", or "www").  http://cgiwrap.unixtools.org/ is
one solution.  Also consider suEXEC  which is part of the Apache
distribution; although, it is not installed by default. See
http://httpd.apache.org/docs/suexec.html . There are reasons why this
is dangerous and those reasons are discussed in the suEXEC
documentation. You can also see if the system administrator can allow
the web server user or group to run cvs. Again, this exposes your
server and so it's dangerous, but allowing cvs commit from a CGI is
dangerous, so I assume you know what you are doing. All of these
solutions will require the involvement of your UNIX system
administrator.

You may also want to look at the ViewCVS project
(http://viewcvs.sourceforge.net/ ) since that is written in Python and
implements a CGI-to-cvs interface. This may give you some
implementation hints.

Yours,
Noah



From bill.mill at gmail.com  Tue May 10 13:07:23 2005
From: bill.mill at gmail.com (Bill Mill)
Date: Tue, 10 May 2005 13:07:23 -0400
Subject: A Faster Way...
In-Reply-To: <OFFDC41720.16387EDC-ONC1256FFD.005C4DB8-C1256FFD.005CCA1C@eni.pri>
References: <OFFDC41720.16387EDC-ONC1256FFD.005C4DB8-C1256FFD.005CCA1C@eni.pri>
Message-ID: <797fe3d4050510100767adc0a7@mail.gmail.com>

On 5/10/05, andrea.gavana at agip.it <andrea.gavana at agip.it> wrote:
> Hello NG,
> 
>       it is probably a beginner question, but I didn't solve it without
> for-loops, and I am unable to determine if there is a faster way (probably
> using some built-in function) to do this task. I have to speed up a
> wxPython code that uses a lot of string concatenation (and uses these
> strings to build some Fancy StaticText Controls). I found a way, but I need
> a little bit of help from you, NG.
> 
> If I simplify the problem, suppose I have 2 lists like:
> 
> a = range(10)
> b = range(20,30)
> 
> What I would like to have, is a "union" of the 2 list in a single tuple. In
> other words (Python words...):

well a "union" can be obtained with:

>>> z = range(10) + range(20, 30)
>>> z
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29]

> 
> c = (0, 20, 1, 21, 2, 22, 3, 23, 4, 24, 5, 25, .....

Alternating the items can be done by:

>>> [z[((i%2)*(len(z/2)))+i/2] for i in range(len(z))]
[0, 20, 1, 21, 2, 22, 3, 23, 4, 24, 5, 25, 6, 26, 7, 27, 8, 28, 9, 29]

Or in a slightly different format:

>>> zip(range(10), range(20, 30))
[(0, 20), (1, 21), (2, 22), (3, 23), (4, 24), (5, 25), (6, 26), (7, 27), (8, 28)
, (9, 29)]

> Sorry if it seems an homework assignment.

It'd be one heck of a short homework assignment. I hope you've read
the python tutorial at http://docs.python.org/tut/tut.html ; it'll
help you a lot to go through it a couple times.

Peace
Bill Mill
bill.mill at gmail.com


From philippe at philippecmartin.com  Tue May 17 11:46:31 2005
From: philippe at philippecmartin.com (Philippe C. Martin)
Date: Tue, 17 May 2005 15:46:31 GMT
Subject: Sorting x lists based on one list ... maybe an example would make
	sense:
References: <eonie.426$VB6.363@newssvr12.news.prodigy.com>
	<ssnie.428$VB6.184@newssvr12.news.prodigy.com>
	<d6d14l$5vj$00$1@news.t-online.com>
Message-ID: <rloie.440$VB6.162@newssvr12.news.prodigy.com>

I will look at that merge/unmerge thing


Peter Otten wrote:

>> Philippe C. Martin wrote:
>> 
>>> I'm looking for an easy algorithm - maybe Python can help:
>>> I start with X lists which intial sort is based on list #1.
>>> I want to reverse sort list #1 and have all other lists sorted
>>> accordingly.
> 
> One way, using a helper list with indices:
> 
>>>> l1 = ['a','b','c']
>>>> l2 = ['toto','titi','tata'] # 'toto' refers to 'a', 'titi' to b' ....
>>>> l3 = ['foo','bar','doe'] # 'foo' refers to 'a' ........
>>>> indices = sorted(range(len(l1)), key=l1.__getitem__, reverse=True)
>>>> for items in l1, l2, l3:
> ...     items[:] = [items[i] for i in indices]
> ...
>>>> l1
> ['c', 'b', 'a']
>>>> l2
> ['tata', 'titi', 'toto']
>>>> l3
> ['doe', 'bar', 'foo']
> 
> Another way would be to merge the three lists into one of 3-tuples, sort,
> and unmerge, similarly to the DSU pattern -- which raises the question:
> why are you using three lists in the first place?
> 
> Peter



From fredrik at pythonware.com  Mon May  9 07:32:43 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Mon, 9 May 2005 13:32:43 +0200
Subject: hard memory limits
References: <d5f9jl$k6d$1@domitilla.aioe.org>
	<86vf5w5tkz.fsf@guru.mired.org><d5g94e$8d0$1@sea.gmane.org><200505061052.28325.jstroud@mbi.ucla.edu><mailman.108.1115404168.29826.python-list@python.org><86hdhg5cc1.fsf@guru.mired.org><mailman.114.1115419035.29826.python-list@python.org>
	<868y2r6cld.fsf@guru.mired.org>
Message-ID: <d5nhb6$epg$1@sea.gmane.org>

Mike Meyer wrote:

> There is something very non-unixy going on here, though. Why is
> vm_malloc exiting with an error message, instead of returning a
> failure to the calling application? I've seen other applications
> include a FOSS malloc implementation to work around bugs in the
> system's malloc. Maybe Python should do that on the Mac?

from what I can tell (by reading the google hits), the malloc implementation
prints a message, but returns NULL as usual (you can find reports of this
message preceeding a MemoryError traceback).

</F> 





From mweihs at gmx.at  Tue May 17 06:30:10 2005
From: mweihs at gmx.at (Markus Weihs)
Date: Tue, 17 May 2005 12:30:10 +0200
Subject: \r functionality
References: <1116325048.303756.222070@z14g2000cwz.googlegroups.com>
Message-ID: <pan.2005.05.17.10.30.10.860015@gmx.at>

Hi!

> in c and c++ there is a useful way to refresh an output line in printf
> and cout using \r meta command. So for example in the wget application
> the progress of the download is updated on the same output line of the
> screen. From an intital investigation python seems to lack this. Is
> this correct?

No. Well, I think you can't do it with print, but you can do this:

import sys
import time

signs = "|/-\\"
while 1:
    for i in signs:
        sys.stdout.write(i+"\r")
        sys.stdout.flush()
        time.sleep(0.2)


Regards, Markus


From yamadora1999 at naver.com  Tue May 24 01:43:48 2005
From: yamadora1999 at naver.com (yamadora1999)
Date: 23 May 2005 22:43:48 -0700
Subject: How to use protocols.msn.FileSend and protocols.msnFileReceive
Message-ID: <97627ec1.0505232143.867c98b@posting.google.com>

How to use protocols.msn.FileSend and FileReceive?
Please show me a example.


From sjmachin at lexicon.net  Thu May 26 18:59:38 2005
From: sjmachin at lexicon.net (John Machin)
Date: Fri, 27 May 2005 08:59:38 +1000
Subject: Case Sensitive, Multiline Comments
In-Reply-To: <8664x5y92g.fsf@guru.mired.org>
References: <1117137316.140791.210430@g14g2000cwa.googlegroups.com>
	<8664x5y92g.fsf@guru.mired.org>
Message-ID: <429654DA.9050903@lexicon.net>

Mike Meyer wrote:

> Personally, I think anyone who has two variables whose names differ
> only in case should be shot. No, let me extend that - anyone who has
> two variables whose names would be pronounced the same should be
> shot. I've had to debug such code, and it ain't fun.

Here's a pair of targets for you:

 From "Software Engineering with Modula-2 and Ada", by Wiener & 
Sincovec, page 84:

WITH w^ DO
     ...
     Col := column;
     Row := row;

It turns out that 'Row' & 'Col' are module-global variables holding the 
current cursor position, and 'row' & 'column' are elements of the record 
to which 'w' points.

Here's another corollary for Meyer's Law: Anyone who has two variables 
the name of one of which is, or could reasonably be understood to be, an 
abbreviation of the name of the other should be shot.

Cheers,
John


From vincent at visualtrans.de  Mon May 30 15:26:07 2005
From: vincent at visualtrans.de (vincent wehren)
Date: Mon, 30 May 2005 21:26:07 +0200
Subject: Python Exercises for Newbee
References: <1117471557.619636.232000@g44g2000cwa.googlegroups.com>
Message-ID: <d7fpcj$u1u$1@news1.zwoll1.ov.home.nl>

"Kanthi Kiran Narisetti" <TechAlerts at gmail.com> schrieb im Newsbeitrag 
news:1117471557.619636.232000 at g44g2000cwa.googlegroups.com...
| Hi ALL,

Hi to you too!

|
| I am Windows Administrator, moving little ahead from batch files and
| scripts I started learning Python. I found that Python is very easy and
| is very well documented. Still I am looking more than examples. As a
| beginner i want to do lot of excersice from simple addition to complex
| ...which help me to understand the concepets more clearly.

have you already perused the Python Cookbook?

http://aspn.activestate.com/ASPN/Python/Cookbook/



As a Windows admin, you may also be interested in looking at
Tim Golden's Python Stuff:

http://tgolden.sc.sabren.com/python/index.html


Enjoy!

--
Vincent Wehren


|
| I appreciate if any one can give me such exersices or any link for the
| same.
|
|
| Thank You ,
| Kanthi Kiran
| 




From steven.bethard at gmail.com  Sun May 29 11:17:32 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Sun, 29 May 2005 09:17:32 -0600
Subject: need help of RE
In-Reply-To: <42997D73.5030400@lexicon.net>
References: <1117352350.179209.206930@z14g2000cwz.googlegroups.com>
	<42997D73.5030400@lexicon.net>
Message-ID: <V_ednXlifMeUQATfRVn-1Q@comcast.com>

John Machin wrote:
>  >>> import re
>  >>> text = "(word1 & (Word2|woRd3))".lower()
> # you seem to want downshifting ...
>  >>> re.split(r"\W+", text)
> ['', 'word1', 'word2', 'word3', '']
>  >>>
> 
> Hmmm ... near, but not exactly what you want. We need to throw away 
> those empty strings, which will appear if you have non-word characters 
> at the ends of your text.

You can also avoid the empty strings at the end by using re.findall with 
\w instead of re.split with \W:

py> import re
py> text = "(word1 & (Word2|woRd3))".lower()
py> re.findall(r"\w+", text)
['word1', 'word2', 'word3']

STeVe


From rowen at cesmail.net  Thu May 12 16:24:24 2005
From: rowen at cesmail.net (Russell E. Owen)
Date: Thu, 12 May 2005 13:24:24 -0700
Subject: tkinter puzzler
References: <7xzmv0hq2h.fsf_-_@ruckus.brouhaha.com>
Message-ID: <rowen-DDCCD9.13242412052005@gnus01.u.washington.edu>

In article <7xzmv0hq2h.fsf_-_ at ruckus.brouhaha.com>,
 Paul Rubin <http://phr.cx at NOSPAM.invalid> wrote:

>I have a gui with a bunch of buttons, labels, the usual stuff.  It
>uses the grid manager:
>
>   gui = Frame()
>   gui.grid()
>   gui.Label(....).grid()  # put some widgets into the gui
>   ...    # more widgets
>
>Now at the the very bottom of the gui, I want to add two more buttons,
>let's say "stop" and "go".  I want "stop" to appear in the gui's lower
>left corner and "go" to appear in the gui's lower right corner.
>Suppose that up to now, row 16 is the last row in the gui.  Then this
>works:
>
>    Button(gui, text="stop").grid(sticky=W)   # starts row 17
>    Button(gui, text="go").grid(row=17, column=1, sticky=E)
>
>But I don't really want that hardwired row number and I don't want to
>keep counting rows and adjusting stuff if I stick new rows in the gui.

A couple of options here:
- Put the main portion of the gui into one frame and pack or grid the 
button frame below that. That sounds like a natural solution to this 
problem based on the way you describe it. (if you do that, I suggest 
packing the buttons into their frame; although I usually use the gridder 
when in doubt, the packer is often the most natural layout manager for a 
row of buttons).

- Increment as you go:
   row = 0

   wdg.grid(row=row, column=0, ...)
   row += 1

   wdg2.grid(row=row, column=0, ...)
   row += 1

- If you are doing a lot of similar layout, it is worth creating a class 
to do your gridding for you. Each instance grids widgets in a particular 
frame. It keeps  track of the row # for you. For use an existing 
gridder, for instance RO.Wdg.Gridder in the RO package 
<http://astro.washington.edu/rowen>.


>So I try the obvious, make one Frame widget containing both new buttons:
>    stopgo = Frame(gui)
>    Button(stopgo, "stop").grid(sticky=W)
>    Button(stopgo, "go").grid(sticky=E)
>
>and try to stretch it across the bottom row of the gui:
>
>    stopgo.grid(sticky=E+W)

This looks OK to me so I'm not sure what's wrong; I think I'd have to 
see your actual code. I suggest examining the size of the stopgo frame 
by setting its background color.

-- Russell


From whoami_1972 at tom.com  Tue May 10 07:34:29 2005
From: whoami_1972 at tom.com (Whoami)
Date: Tue, 10 May 2005 19:34:29 +0800
Subject: extra a column from a 2-D array?
Message-ID: <20050510113435.A1AC31E4003@bag.python.org>

Uwe Lauth,???

	 Very good!

======= 2005-05-10 18:57:38 ????????=======

>Joe Wong wrote:
>(original posting not on my nntp server)
>>>Hello,
>>> 
>>> Suppose I have a python array as follow:
>>> 
>>>    s=[ [1,3,5],
>>>        [2,4,6],
>>>        [9,8,7]]
>>> 
>>>what is the quickest way to extract the second colum from all rows? That 
>>>is: [3,4,8] in this example.
>
>[a[1] for a in s]
>
>Uwe
>
>-- 
>http://mail.python.org/mailman/listinfo/python-list

= = = = = = = = = = = = = = = = = = = =
			

?????????
??
 
				 
????????Whoami
????????whoami_1972 at tom.com
??????????2005-05-10


From none  Thu May 12 17:02:43 2005
From: none (Hansan)
Date: Thu, 12 May 2005 23:02:43 +0200
Subject: Problem combining python code and html
References: <42822b3d$0$653$ba624c82@nntp02.dk.telia.net>
	<1115928234.948073.153540@f14g2000cwb.googlegroups.com>
Message-ID: <4283c470$0$4234$ba624c82@nntp06.dk.telia.net>

Hi all and thanks for the help, With help from Fredrik I got the code 
working, I will also look into the links you guys have suggested.
Hope you all are feeling well and happy.



"has" <has.temp2 at virgin.net> wrote in message 
news:1115928234.948073.153540 at f14g2000cwb.googlegroups.com...
> Hansan wrote:
>
>> And is there a nother way to combine python code and html templates?
>
> There's a decent list of Python templating engines at:
>
> http://www.python.org/moin/WebProgramming
>
> Look about a third of the way down down under "Variable
> Insertion-Replacement Templating Applications (Pre-processors)". The
> title is ridiculous but the links are sound.
>
> HTH
> 




From aahz at pythoncraft.com  Sun May  1 17:05:29 2005
From: aahz at pythoncraft.com (Aahz)
Date: 1 May 2005 14:05:29 -0700
Subject: Whats the best Python Book for me
References: <zQade.1185052$Xk.1184944@pd7tw3no>
Message-ID: <d53gap$o4k$1@panix3.panix.com>

In article <zQade.1185052$Xk.1184944 at pd7tw3no>,
John Smith <not at home.com> wrote:
>
>I already know C/C++ programming and now wish to learn Python to do
>scripting for some games that are coming out. What book would you
>recommend.
>
>I am thinking Teach Your Self Python in 24 Hours is probably the best
>place to start...

Speaking as the tech editor of that book, I disagree, if only because
it's almost completely out of date.  There have been four major versions
of Python released since TYP24.  Start with the tutorial on python.org;
that assumes you already know something about programming.
-- 
Aahz (aahz at pythoncraft.com)           <*>         http://www.pythoncraft.com/

"It's 106 miles to Chicago.  We have a full tank of gas, a half-pack of
cigarettes, it's dark, and we're wearing sunglasses."  "Hit it."


From mbbx6spp at gmail.com  Fri May 27 17:55:19 2005
From: mbbx6spp at gmail.com (mbbx6spp at gmail.com)
Date: 27 May 2005 14:55:19 -0700
Subject: Python/Excel AddIn (was:Re: Does Python have a Template::Extract
	equivalent from Perl's CPAN)
In-Reply-To: <1117228459.243806.272670@z14g2000cwz.googlegroups.com>
References: <1117215841.123847.234300@o13g2000cwo.googlegroups.com>
	<1117216401.626017.218080@g49g2000cwa.googlegroups.com>
	<mailman.195.1117216888.18027.python-list@python.org>
	<1117228459.243806.272670@z14g2000cwz.googlegroups.com>
Message-ID: <1117230919.379370.139060@g44g2000cwa.googlegroups.com>

CL, after you install py_win32 on windows you should look for a module
called "excel*.py" under your ${PYTHONHOME} directory.  They have a
very basic COM Server Excel AddIn as an example.



From fredrik at pythonware.com  Tue May 24 13:05:51 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 24 May 2005 19:05:51 +0200
Subject: PIL and line drawing
References: <zleje.794472$w62.202433@bgtnsc05-news.ops.worldnet.att.net><mailman.244.1116593366.8733.python-list@python.org>
	<Xns965C7A2E1E0A4jreeder@63.223.7.253>
Message-ID: <d6vmqb$31i$1@sea.gmane.org>

"rzed" <jello at comics.com> wrote:

> > if you have 1.1.5, you can use the width option to control
> > the line width. see:
>
> I'm glad to see that addition. I was surprised to see that 'width'
> is actually doubled in the resulting line, though. I suppose the
> code adds and subtracts the specified width from the specified
> coordinate point(?).

hmm.  that sure sounds a lot like a bug I though I had fixed.

</F>





From ville at spammers.com  Wed May  4 08:43:35 2005
From: ville at spammers.com (Ville Vainio)
Date: 04 May 2005 15:43:35 +0300
Subject: Difference between Python CGI applications and Php applications
References: <mailman.152.1115205397.6583.python-list@python.org>
Message-ID: <du7zmvbi2ko.fsf@amadeus.cc.tut.fi>

>>>>> "Praba" == praba kar <prabapython at yahoo.co.in> writes:

    Praba> Dear all,

    Praba> I have a project that is conversion of Php Web applications
    Praba> into Python cgi applications.  In my mind compare

You might want to look into mod_python and psp (python server pages)
for a more straightforward conversion:

http://www.onlamp.com/pub/a/python/2004/02/26/python_server_pages.html

-- 
Ville Vainio   http://tinyurl.com/2prnb


From michele.simionato at gmail.com  Sun May  1 23:29:25 2005
From: michele.simionato at gmail.com (Michele Simionato)
Date: 1 May 2005 20:29:25 -0700
Subject: MRO problems with diamond inheritance?
In-Reply-To: <1114987828.055744.250090@z14g2000cwz.googlegroups.com>
References: <d53jqq$b88$1@newsg4.svr.pol.co.uk>
	<1114987828.055744.250090@z14g2000cwz.googlegroups.com>
Message-ID: <1115004565.128735.58670@o13g2000cwo.googlegroups.com>

> M.E.Farmer:

>Your answer lies somewhere in this page ;)
>http://www.python.org/2.2.2/de?scrintro.html

Yes, when it refers to

http://www.python.org/2.3/mro.html

(section Bad Method Resolution Orders).

In short, it is a feature, not a bug.

                    Michele Simionato



From flyaflya at gmail.com  Tue May 10 07:47:12 2005
From: flyaflya at gmail.com (flyaflya)
Date: Tue, 10 May 2005 19:47:12 +0800
Subject: why this happend using model random?
In-Reply-To: <mailman.271.1115720549.29826.python-list@python.org>
References: <d5q0ro$5lb$1@news.yaako.com>
	<mailman.271.1115720549.29826.python-list@python.org>
Message-ID: <d5q707$lg3$1@news.yaako.com>

Robert Kern wrote:
> flyaflya wrote:
> 
>> from random import *
>>
>> col = [0 for i in range(10)]
>> a = [col for  i in range(10)]
> 
> 
> This is the problem. The list "a" now has ten references to the same 
> object "col". They are not copied.
> 
>> seed()
>> for i  in range(10):
>>      for j in  range(10):
>>          a[i][j] = randint(0, 100)
> 
> 
> So every time you index into "a[i][j]" you are always getting "col[j]".
> 
thanks,I see,I know about reference and copy,but when is it a copy?when 
a reference?how can I get a copy when need?


From thesamet at nospam.com  Sun May  8 15:09:57 2005
From: thesamet at nospam.com (pythonchallenge)
Date: Sun, 08 May 2005 15:09:57 -0400
Subject: Python Challenge ahead [NEW] - for riddle lovers
Message-ID: <b547cf52f7910151357150391102b3ef@localhost.talkaboutprogramming.com>

For the riddles' lovers among you, you are most invited to take part
in the Python Challenge, the first python programming riddle on the net.

You are invited to take part in it at:
http://www.pythonchallenge.com




From jean_seb at videotron.ca  Wed May 18 10:38:26 2005
From: jean_seb at videotron.ca (=?ISO-8859-1?Q?Jean-S=E9bastien_Guay?=)
Date: Wed, 18 May 2005 10:38:26 -0400
Subject: Problem listing services with wmi
In-Reply-To: <9A28C052FF32734DACB0A288A3533991EBB822@vogbs009.gb.vo.local>
References: <9A28C052FF32734DACB0A288A3533991EBB822@vogbs009.gb.vo.local>
Message-ID: <428B5362.5000401@videotron.ca>

Hi again Tim,

>OK. I'm running 2.3 normally but I've run the scripts with
>2.4 so I don't think it makes a difference. I'll leave the
>set import logic in place so I don't have to remember.
>  
>

Any reason I should know about that you haven't updated to 2.4? I just 
got into Python, so I got the latest version, but if there's something 
wrong with 2.4 I'd like to know...

>It would be interesting
>to know what it is about one or more services which gives WMI a
>problem
>  
>

Which is what really puzzles me... From the list of 21 services that 
were gotten by win32service and not wmi, I can't see any service that's 
"special" in any way... So without further investigation, I really 
couldn't say.

>I think that all we're likely to achieve is, as I say, a more
>robust solution; we're unlikely to get the missing service
>if the core WMI can't see it for some reason. 
>

But if we can get WMI to just "skip over" the offending service, at 
least then we'll be able to know which one causes this...

>n_services = services.Count
>

It now fails at the line above, with the following error :

Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File "G:\Python-2.4\Lib\site-packages\win32com\client\__init__.py", 
line 455, in __getattr__
    return self._ApplyTypes_(*args)
  File "G:\Python-2.4\Lib\site-packages\win32com\client\__init__.py", 
line 446, in _ApplyTypes_
    return self._get_good_object_(
pywintypes.com_error: (-2147352567, 'Exception occurred.', (0, 
'SWbemObjectSet',  'Critical error ', None, 0, -2147217398), None)

I had tried something similar yesterday, with the same results. It would 
seem (from what I can understand) that c.ExecQuery() just makes a list 
of proxy objects, and that when you call Count on the set, it has to 
create them all for real and that's where it fails when reaching the 
"bad" service.

Thanks again, looking forward to trying other ideas.

J-S

-- 
___________________________________________
Jean-S?bastien Guay   jean_seb at videotron.ca
             http://whitestar02.webhop.org/



From rbt at athop1.ath.vt.edu  Tue May  3 13:02:17 2005
From: rbt at athop1.ath.vt.edu (rbt)
Date: Tue, 03 May 2005 13:02:17 -0400
Subject: [Errno 9] Bad File Descriptor on Windows 2003 Server & Py 2.4.1
In-Reply-To: <d586ba$lqt$1@news1.zwoll1.ov.home.nl>
References: <d57sj2$amj$1@solaris.cc.vt.edu>
	<d586ba$lqt$1@news1.zwoll1.ov.home.nl>
Message-ID: <d58aqp$5kq$1@solaris.cc.vt.edu>

vincent wehren wrote:
> "rbt" <rbt at athop1.ath.vt.edu> schrieb im Newsbeitrag 
> news:d57sj2$amj$1 at solaris.cc.vt.edu...
> | The below script produces a '[Errno 9] Bad File Descriptor' when
> | executed. If I remove the try: except: statements, the script stops when
> | the error occurs.
> |
> | The purpose of the script is to monitor the size of the three main logs
> | on a Windows 2003 server and send and email should any of the logs get
> | shorter. It works fine... just don't know *why* it produces the '[Errno
> | 9] Bad File Descriptor' error.
> |
> | I'm running Python 2.4.1 on Windows 2003 SP1 Server with no funky win32
> | extensions ;)
> |
> | logs = ['AppEvent.Evt', 'SecEvent.Evt', 'SysEvent.Evt']
> |
> | app_size = 0
> | sec_size = 0
> | sys_size = 0
> |
> | def send_email(LogName, old_size, new_size):
> |     f = "Somebody<XXXXXXXXX at vt.edu>"
> |     t = "Somebody_Else at vt.edu"
> |
> |     msg = MIMEText("""old_size = %d, new_size = %d""" %(old_size,
> | new_size))
> |
> |     msg["Subject"] = "%s Log Just Got Shorter" %LogName
> |     msg["Message-id"] = email.Utils.make_msgid()
> |     msg["From"] = f
> |     msg["To"] = t
> |
> |     h = "smtp.vt.edu"
> |     s = smtplib.SMTP(h)
> |     s.sendmail(f, t, msg.as_string())
> |     s.quit()
> |
> | while 1:
> |
> |     for log in logs:
> |
> |         try:
> |
> |             a = os.stat('C:\WINDOWS\System32\config\%s' %log)
> 
> Without looking at the rest of script:
> 
> Try using either escaped backslashes as in:
> 
> a = os.stat('C:\\WINDOWS\\System32\\config\\%s' %log)
> 
> or a raw string (as long as it doesn't end with a single backslash) as in:
> 
> a = os.stat(r'C:\WINDOWS\System32\config\%s' %log)
> 
> or simply use forward slashes as in:
> 
> a = os.stat('C:/WINDOWS/System32/config/%s' %log)

Thanks, that worked.


From prinster at mail.com  Wed May 25 23:05:04 2005
From: prinster at mail.com (Stephen Prinster)
Date: Thu, 26 May 2005 03:05:04 GMT
Subject: Python Impact Analysis Tool ?
In-Reply-To: <mailman.110.1117053764.18027.python-list@python.org>
References: <1117027674.787033.113730@f14g2000cwb.googlegroups.com>	<200505251520.54697.hancock@anansispaceworks.com>
	<mailman.110.1117053764.18027.python-list@python.org>
Message-ID: <A1ble.21354$J12.19300@newssvr14.news.prodigy.com>

Paul McNett wrote:
> Terry Hancock wrote:
> 
>> On Wednesday 25 May 2005 08:27 am, dcolford2000 at hotmail.com wrote:
>>
>>> Is there an impact analysis tool out there that can cross reference
>>> python -- VB has a couple of these tools (eg. Visual Expert)
>>
>>
>> I could be wrong, but my first impression is that that must be
>> VB jargon for something we might know under another name.
> 
> 
> Yep, I think we know it as 'unit testing'.
> 
> From the Visual Expert site (http://visual-expert.com), impact analysis
> refers to taking a given variable or function name, and finding
> everywhere in the project where that name is referenced, for the purpose
> of determining what bad things will happen when that variable or
> function is changed somehow. The tool won't tell you what bad things
> will happen, just list other code segments that depend on the name in
> question.

This also sounds a little bit like "refactoring."
The OP may want to look at Bicycle Repair Man:

http://bicyclerepair.sourceforge.net/


From cs_gorton at hotmail.com  Tue May  3 14:27:24 2005
From: cs_gorton at hotmail.com (Chris Gorton)
Date: Tue, 03 May 2005 18:27:24 +0000
Subject: atexit not being executed
In-Reply-To: <17015.37191.253238.398725@montanaro.dyndns.org>
Message-ID: <BAY107-F346052A2843B32F5855A118F180@phx.gbl>

The environment in which I am working is client/server and it is the server 
that processes all python code. I have tried creating a file (which in the 
case of what I have explained means that I can't issue a close command) and 
let the process run as I have before. When the process has finished and I 
try deleting the file I get a permission denied error. As soon as I stop the 
server for the environment it frees up the resources to this file. Not quite 
sure how they could be implmenting the python.

I am assuming then that the Py_Finalize is not being called until maybe when 
the server terminates. This being the case it would not be any good as the 
server should be 'Up' all of the time!.

Can you think of any possible workarounds for this?

>From: Skip Montanaro <skip at pobox.com>
>To: "Chris Gorton" <cs_gorton at hotmail.com>
>CC: python-list at python.org
>Subject: Re: atexit not being executed
>Date: Tue, 3 May 2005 09:57:11 -0500
>
>
>     Chris> I tried looking through the documentation ...
>
>Always a good first step... <wink>
>
>     Chris> ... and came across atexit. I tried putting this into my code 
>and
>     Chris> it never seems to actually process the atexit.register(....)
>     Chris> function thus leaving me stranded. My question is what might be
>     Chris> the reason for this happening ...
>
>You didn't post any code, so I can only guess, however, if your program
>exits other than by calling Py_Finalize (that is, if your program crashes 
>or
>you kill it forcefully), I don't think your registered exit functions will
>be called.  If that's not the situation, post some code so people can see 
>if
>you're using the module correctly.
>
>Skip
>




From thesamet.nospam at pythonchallenge.com  Sat May 21 05:41:29 2005
From: thesamet.nospam at pythonchallenge.com (pythonchallenge)
Date: Sat, 21 May 2005 12:41:29 +0300
Subject: moving from c++ to python
In-Reply-To: <d6mufo$o8v$1@nwrdmz03.dmz.ncs.ea.ibs-infra.bt.com>
References: <d6mufo$o8v$1@nwrdmz03.dmz.ncs.ea.ibs-infra.bt.com>
Message-ID: <d6mvks$h9k$1@news2.netvision.net.il>

Michael wrote:
> Hi,
> I'm a pretty sound programmer in C++, but would like to learn python! Does
> anyone know of any tutorial s aimed at me?? My biggest confusion so far is
> the lack of pointers in Python ......
> Regards
> 
> 
> Michael
> 
> 

I suggest that you start with the official Python tutorial at 
http://docs.python.org/tut/tut.html

-- 
Are you a riddle lover?
Try http://www.pythonchallenge.com


From Scott.Daniels at Acm.Org  Fri May  6 12:16:15 2005
From: Scott.Daniels at Acm.Org (Scott David Daniels)
Date: Fri, 06 May 2005 09:16:15 -0700
Subject: annonymous functions -- how to
In-Reply-To: <mailman.84.1115365568.29826.python-list@python.org>
References: <1115239458.776800.240080@g14g2000cwa.googlegroups.com><d5bdip$bpp$05$2@news.t-online.com><42795acb.685370470@news.oz.net><1115264804.625020.203800@f14g2000cwb.googlegroups.com><YuWdnVUxIKrdmuffRVn-oA@powergate.ca>	<TPree.10739$fI.442@fed1read05>
	<mailman.84.1115365568.29826.python-list@python.org>
Message-ID: <427b9237$1@nntp0.pdx.net>

Fredrik Lundh wrote:
> 
> so name them all "func" or "next" or something, so you don't have
> to think.  once the object is bound, the name is irrlevant.
> 
Or, you could tell him about the reserved word anonymous which can be
used to created unnamed functions of values. A sample definition and
use of the anonymous keyword follows:

     def anonymous(text):
         return 'modified ' + text

     print 'Sample', anonymous('words')

--Scott David Daniels (with his tongue jammed firmly in his cheek)
Scott.Daniels at Acm.Org


From lee at example.com  Fri May 20 16:38:45 2005
From: lee at example.com (Lee Harr)
Date: Fri, 20 May 2005 20:38:45 GMT
Subject: PyGame and Rotozoom (Sorry if OT)
References: <2Ifje.100148$hu5.2601@tornado.texas.rr.com>
Message-ID: <pVrje.1690$8g.506@news01.roc.ny>

On 2005-05-20, J. W. McCall <jmccall at houston.rr.com> wrote:
> I'm not sure if this is off-topic, since it doesn't deal with Python 
> itself, but here goes:
>
> I'm messing around with writing a simple "game" where the player (a 
> crudely drawn smiley face) moves by rotating and moving back or forward 
> (think Resident Evil, but from an always-above view).  After much 
> hacking, I have it working where left and right rotate the player sprite 
> and up always moves the sprite whichever direction it's facing, while 
> down is reverse.  I'm using pygame.transform.RotoZoom().
>
> My problem is that it doesn't rotate smoothly.  When it rotates, the 
> corners of the image (just a plain white background) look like they're 
> hitting some barrier and making it move around.  Think of an empty box 
> turned diagonally (so that it looks like a diamond, with its open end 
> facing you), and a cube in that box being turned while it's resting in 
> the bottom corner.  I want it to rotate smoothly around its center, it's 
> it's not doing that.
>
> I'm guessing that it has something to do with me not setting up a Rect 
> right, but I'm not sure.  Maybe this is a limitation of Rotozoom/Rotate?
>
> Any advice would be greatly appreciated.  And yes, I'm a rank PyGame newbie.
>



You might want to try pygsear:
http://www.nongnu.org/pygsear/

It has a RotatedImage class which takes care of rotating
things for you. See the examples roti.py and wings.py
for some use of rotated image sprites.


From mackstevenson at hotmail.com  Sun May 15 21:01:18 2005
From: mackstevenson at hotmail.com (MackS)
Date: 15 May 2005 18:01:18 -0700
Subject: deleting the terminal prompt?
In-Reply-To: <dgpf81ptdhiqn7bg6ub3tj21g22q9npg6g@4ax.com>
References: <1116199977.020208.311330@z14g2000cwz.googlegroups.com>
	<dgpf81ptdhiqn7bg6ub3tj21g22q9npg6g@4ax.com>
Message-ID: <1116205278.871082.177640@g49g2000cwa.googlegroups.com>

Thanks, Dennis, that solved it.

Cheers

Mack

Dennis Lee Bieber wrote:
> On 15 May 2005 16:32:57 -0700, "MackS" <mackstevenson at hotmail.com>
> declaimed the following in comp.lang.python:
>
>
> > while cmd != "":
> >
> >     sys.stdout.write("prompt: ")
> >     cmd = raw_input()
> >
> >     # at this point it studies the contents of cmd and decides what
to
> > do next.
> >
> > However, if the user simply presses Tab followed by a backspace
s/he
> > effectively makes the prompt disappear. Is there a way to prevent
this
> > from happening?
> >
> 	What behavior does...
>
> while cmd != "":
> 	cmd = raw_input("prompt: ")
>
> ... give you?
>
> --
>  > ============================================================== <
>  >   wlfraed at ix.netcom.com  | Wulfraed  Dennis Lee Bieber  KD6MOG <
>  >      wulfraed at dm.net     |       Bestiaria Support Staff       <
>  > ============================================================== <
>  >           Home Page: <http://www.dm.net/~wulfraed/>            <
>  >        Overflow Page: <http://wlfraed.home.netcom.com/>        <



From dalke at dalkescientific.com  Sun May  1 21:58:03 2005
From: dalke at dalkescientific.com (Andrew Dalke)
Date: Mon, 02 May 2005 01:58:03 GMT
Subject: How to kill a SocketServer?
References: <7xwtqj1lh1.fsf@ruckus.brouhaha.com>
	<pan.2005.05.01.08.06.34.989917@dalkescientific.com>
	<7x1x8qpkrg.fsf@ruckus.brouhaha.com>
Message-ID: <pan.2005.05.02.01.58.05.347451@dalkescientific.com>

After I gave a reference to CherryPy's threaded SocketServer-based
http server code Paul Rubin followed up:
> Well, ok, so the worker threads stop.  How do you get the listener
> thread to stop, since it's blocked waiting for a new connection to arrive?

I don't know the code well enough.  You might want to look
through it yourself.  I think it works by implementing a
new 'server_activate()' to implement a timeout


class CherryHTTPServer(BaseHTTPServer.HTTPServer):
    def server_activate(self):
        """Override server_activate to set timeout on our listener
         socket"""
        self.socket.settimeout(1)
        BaseHTTPServer.HTTPServer.server_activate(self)


followed by a check for the timeeout

    def handle_request(self):
        """Override handle_request to trap timeout exception."""
        try:
            BaseHTTPServer.HTTPServer.handle_request(self)
        except socket.timeout:
            # The only reason for the timeout is so we can notice keyboard
            # interrupts on Win32, which don't interrupt accept() by default
            return 1
        except KeyboardInterrupt:
            _cpLogMessage("<Ctrl-C> hit: shutting down", "HTTP")
            self.shutdown()


with the redefined serve_forever() done as

    def serve_forever(self):
        """Override serve_forever to handle shutdown."""
        self.__running = 1
        while self.__running:
            self.handle_request()

The __running attribute is set in the shutdown() method

    def shutdown(self):
        self.__running = 0


It looks like some special attention is needed when the socket
is in timeout mode

    def get_request(self):
        # With Python 2.3 it seems that an accept socket in timeout (nonblocking
) mode
        #  results in request sockets that are also set in nonblocking mode. Sin
ce that doesn't play
        #  well with makefile() (where wfile and rfile are set in SocketServer.p
y) we explicitly set
        #  the request socket to blocking

        request, client_address = self.socket.accept()
        request.setblocking(1)
        return request, client_address


Hmmm, and I've just copied and pasted the entire implementation of

class CherryHTTPServer(BaseHTTPServer.HTTPServer):

given in my CherryPy-2.0.0/cherrypy/_cphttpserver.py

				Andrew
				dalke at dalkescientific.com




From efoda5446 at yahoo.com  Sat May 28 17:52:14 2005
From: efoda5446 at yahoo.com (Lorn)
Date: 28 May 2005 14:52:14 -0700
Subject: String manipulations
In-Reply-To: <MB5me.3507$4N2.3160@newssvr30.news.prodigy.com>
References: <1117316427.826830.189260@g14g2000cwa.googlegroups.com>
	<MB5me.3507$4N2.3160@newssvr30.news.prodigy.com>
Message-ID: <1117317133.919080.325250@g14g2000cwa.googlegroups.com>

Yes, that would get rid of the decimals... but it wouldn't get rid of
the extraneous precision. Unfortunately, the precision out to the ten
thousandth is noise... I don't need to round it either as the numbers
are artifacts of an integer to float conversion. Basically, I need to
know how many decimal places there are and then make the necessary
deletions before I can normalize by adding zeros, multiplying, etc.

Thanks for your suggestion, though.



From flyaflya at gmail.com  Tue May 31 03:05:55 2005
From: flyaflya at gmail.com (flyaflya)
Date: Tue, 31 May 2005 15:05:55 +0800
Subject: a newbie question  about debug
In-Reply-To: <d7gokv$70b$1@news.yaako.com>
References: <d7gokv$70b$1@news.yaako.com>
Message-ID: <d7h2c4$em9$1@news.yaako.com>

flyaflya wrote:
> I use pdb.set_trace() to debug code.the Debugger Commands "enable" and 
> "disable" need argumet -- "breakpoint number",but I can't  find any 
> information about it,so how to can i get the breakpoint number? I think 
> "disable","enable" are very useful commands...
I know why I can't get breakpoint list using command "b", beacause I use 
pdb.set_trace() to set breakpoint ,but this break can't be shown by 
"b",breakpoint only setted during debuging can be shown.


From mwm at mired.org  Tue May 17 17:44:12 2005
From: mwm at mired.org (Mike Meyer)
Date: Tue, 17 May 2005 16:44:12 -0500
Subject: Parsing text into dates?
References: <1116277171.492587.38080@g47g2000cwa.googlegroups.com>
Message-ID: <8664xh8r4j.fsf@guru.mired.org>

"Thomas W" <thomas.weholt at gmail.com> writes:

> I'm developing a web-application where the user sometimes has to enter
> dates in plain text, allthough a format may be provided to give clues.
> On the server side this piece of text has to be parsed into a datetime
> python-object. Does anybody have any pointers on this?

Why are you making it possible for the users to screw this up? Don't
give them a text widget to fill in and you have to figure out what the
format is, give them three widgets so you *know* what's what.

In doing that, you can also go to dropdown widgets for month, with
month names (in a locale appropriate for the page language), and for
the days in the month. For the latter, you can use JScript to get the
number of days in the list right, but make sure you fill it in with a
full 31 in case the user has JScript disabled. Finally, if you are
dealing with a fixed range of years, you can use a dropdown list for
that as well, eliminating having to deal with any text from the user
at all.

If the spec calls for plain text entry and you've already tried to get
that changed to something sane, my apologies.

     <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From a.r.ferreira at gmail.com  Fri May 20 08:20:50 2005
From: a.r.ferreira at gmail.com (Adriano Ferreira)
Date: Fri, 20 May 2005 09:20:50 -0300
Subject: XML Newbie needing some serious help..
In-Reply-To: <8c7f10c60505200513100adf04@mail.gmail.com>
References: <1116548825.824988.263060@f14g2000cwb.googlegroups.com>
	<8c7f10c60505200513100adf04@mail.gmail.com>
Message-ID: <73ddeb6c050520052026777d0d@mail.gmail.com>

> That doesn't appear to be well-formed XML, which isn't a good start...

Indeed. rh0dium, you can't have two <node>s elements at root level.

If you use an enclosing element around the two <node>s, your XML
becomes well formed. Like this:

<?xml version="1.0" standalone="yes" ?>
<root>
<!-- generated by lshw-B.02.03 -->
<!-- GCC 3.2.3 20030502 (Red Hat Linux 3.2.3-42) -->
   <node id="cpu:0" claimed="true" class="processor" handle="DMI:0400">
   ...
   </node>
   <node id="cpu:1" disabled="true" claimed="true" class="processor"
handle="DMI:0401">
   ...
   </node>
</root>

Regards, Adriano.


From timothy at open-networks.net  Tue May 17 02:06:12 2005
From: timothy at open-networks.net (Timothy Smith)
Date: Tue, 17 May 2005 16:06:12 +1000
Subject: query progress bar
In-Reply-To: <Xns96594C9E0960cpl19ghumspamgourmet@195.20.224.116>
References: <mailman.65.1116284481.8733.python-list@python.org>	<1116286913.207477.219180@g44g2000cwa.googlegroups.com>	<mailman.69.1116288978.8733.python-list@python.org>
	<Xns96594C9E0960cpl19ghumspamgourmet@195.20.224.116>
Message-ID: <428989D4.8070405@open-networks.net>

Harald Massa wrote:

>>it's for wx, the problem isn't making the progress bar itself, it's 
>>knowing how long the query is going to run for.
>>i'm using pypgsql
>>    
>>
>
>It is quite easy:
>
>from timemachine import oracle
>
>guesser=oracle(guess="SQL")
>guesser.set_hint(driver="pypgsql")
>guesser.set_hint(gui="wx")
>
>expected_runtime=guesser.estimate("<put your query text here>")
>
>Only problem is that the timemachine module is currently only installed 
>on Guidos and Tims Python.
>
>Harald
>  
>
man thats exactly what i'm looking for. it won't install on standard 2.3 ?


From peter at engcorp.com  Mon May 16 19:11:38 2005
From: peter at engcorp.com (Peter Hansen)
Date: Mon, 16 May 2005 19:11:38 -0400
Subject: Parsing text into dates?
In-Reply-To: <317i815ifjtpn3screkeuv4jfk33uu41ck@4ax.com>
References: <1116277171.492587.38080@g47g2000cwa.googlegroups.com>
	<317i815ifjtpn3screkeuv4jfk33uu41ck@4ax.com>
Message-ID: <_tKdnb1EOI9TtRTfRVn-jA@powergate.ca>

John Machin wrote:
> If this application is being deployed from a central server where the
> users can be worldwide, you have two options:
> 
> (a) try to work out somehow what the user's locale is, and then work
> with dates in the legacy format "appropriate" to the locale.

And this inevitably screws a large number of Canadians (and probably 
others), those poor conflicted folk caught between their European roots 
and their American neighbours, some of whom use mm/dd/yy and others of 
whom use dd/mm/yy on a regular basis.  And some of us who switch 
willy-nilly, much as we do between metric and imperial. :-(

> (b) Use the considerably-less-stupid ISO 8601 standard format
> yyyy-mm-dd (e.g. 2004-12-01) -- throughout your web-application, not
> just in your data entry. 

+1 (emphatically!)  (I almost always use this form even on government 
submissions, and nobody has complained yet.  Of course, they haven't 
started changing the forms yet, either...)

-Peter


From opengeometry at yahoo.ca  Fri May 20 22:42:19 2005
From: opengeometry at yahoo.ca (William Park)
Date: Fri, 20 May 2005 22:42:19 -0400
Subject: Parsing bash_history and inputting into mysql (Intrusion
	Detection)
References: <1116634282.053448.22680@o13g2000cwo.googlegroups.com>
Message-ID: <da7c6$428ea00b$d8fe9d50$18532@PRIMUS.CA>

sreekanth.hari at gmail.com wrote:
> I have a seemingly tough assignment for my Senior Project. I need to
> develop an Intrusion Detection System.
> 
> My approach is to parse the bash_history file of each user into a mysql
> database, assign a threshold for commands or sequences of commands and
> then alert the admin of nethin fishy is found.

~/.bash_history is written when Bash exits.  Try
    history -c
    exit
and see what happens.

> 
> My advisor reccomended I use python for writing the scripts.
> 
> I am absolutely new to python and have no prior experience in it. That
> said
> 
> Could any one tell me how exactly to go abt all this?
> 
> Any tools or code that would make my life easier?
> 
> Suggestions (which modules to use etc) ?

-- 
William Park <opengeometry at yahoo.ca>, Toronto, Canada
ThinFlash: Linux thin-client on USB key (flash) drive
	   http://home.eol.ca/~parkw/thinflash.html


From richardjones at optushome.com.au  Mon May 16 08:11:49 2005
From: richardjones at optushome.com.au (richard)
Date: Mon, 16 May 2005 22:11:49 +1000
Subject: problem uploading ZIP file tp PyPI
References: <spsb81hia4m5n136tp0sgpuldd0gon555m@4ax.com>
	<4287fd5e$0$4655$afc38c87@news.optusnet.com.au>
	<1116210182.148076.159110@g44g2000cwa.googlegroups.com>
Message-ID: <42888e05$0$5180$afc38c87@news.optusnet.com.au>

John Machin wrote:
> richard wrote:
>> John Machin wrote:
>> > Sorry in advance if this is not the correct forum ...
>>
>> Quite. The support link for PyPI is in the sidebar of the site.
>>
> 
> Tried that, when I was trying to register and getting strange error
> messages about the user name, like "John Machin" and "John_Machin" were
> not "ascii" [it finally permitted "sjmachin"]. The response volume
> could not be likened to that of a fire-hose.

You mean the request you put in two days ago? Sorry I've not got around to
responding yet. It was admittedly low on my priority list because you were
the only person reporting the issue (out of hundreds of successful
registrations). I will now fill in the details you've just provided (ie the
input you used which broke the interface) so that when I get around to
fixing it I'll know what I'm looking for.


> Which is precisely how the file in question was generated:
> 
> setup.py sdist --format=zip

Try without the --format arg. The code is being too paranoid.


    Richard



From http  Thu May 19 03:46:30 2005
From: http (Paul Rubin)
Date: 19 May 2005 00:46:30 -0700
Subject: urllib2 EOF occurred in violation of protocol with proxy
References: <1116488133.633861.169860@g49g2000cwa.googlegroups.com>
Message-ID: <7xoeb78xpl.fsf@ruckus.brouhaha.com>

"Bloke" <rhall at thiess.com.au> writes:
> The site works fine if I do not go through the proxy, so it appears the
> proxy is not returning an EOF.  I been searching for an answer, and
> found many other sites where people have had the same problem.  Some
> have suggested m2crypto.
> 
> Is there a work around using the standard  2.4.1 installation?

I sort of remember some problem like that with Microsoft web servers.
It's not clear that a "workaround" is really the right thing--it's a
security hole, it lets attackers truncate web pages coming through the
proxy without your client app being able to tell the difference.

OpenSSL includes an interactive SSL client (sort of like telnet) that
can be convenient for trying stuff out without having to write code.
Just type for example at the openssl prompt:

   OpenSSL> s_client -connect www.yourhost.com 443
   GET / HTTP/1.0
   <newline>
   <newline>

substituting whatever your host and port are.


From efoda5446 at yahoo.com  Fri May 20 21:04:22 2005
From: efoda5446 at yahoo.com (Lorn)
Date: 20 May 2005 18:04:22 -0700
Subject: Memory errors with large zip files
In-Reply-To: <1116609022.526500.317990@g44g2000cwa.googlegroups.com>
References: <1116609022.526500.317990@g44g2000cwa.googlegroups.com>
Message-ID: <1116637462.076589.287880@g47g2000cwa.googlegroups.com>

Ok, I'm not sure if this helps any, but in debugging it a bit I see the
script stalls on:

newFile.write (zf.read (zfilename))

The memory error generated references line 357 of  the zipfile.py
program at the point of decompression:

elif zinfo.compress_type == ZIP_DEFLATED:
   if not zlib:
      raise RuntimeError, \
      "De-compression requires the (missing) zlib module"
      # zlib compress/decompress code by Jeremy Hylton of CNRI
            dc = zlib.decompressobj(-15)
            bytes = dc.decompress(bytes)  ###  <------ right here

Is there anyway to modify how my code is approaching this or perhaps
how the zipfile code is handling it or do I need to just invest in more
RAM? I currently have 512 MB and thought that would be plenty....
perhaps I was wrong :-(. If anyone has any ideas it would truly be very
helpful.

Lorn



From Pokerface.1ovwo1 at no-mx.tacticalgamer.com  Wed May 11 16:06:17 2005
From: Pokerface.1ovwo1 at no-mx.tacticalgamer.com (Pokerface)
Date: Wed, 11 May 2005 16:06:17 -0400
Subject: Jesus said, "I am the way,
	the truth and the life: no one can come to the Father(God)(in Heaven),
	but by me." (John 14:6) This means that if you die without trusting in
	Jesus Christ as your Lord and Saviour you will die in your sins and be
References: <1115824563.613661.169620@g47g2000cwa.googlegroups.com>
	<M%qge.1317047$Xk.244810@pd7tw3no> <d5tmrq$5vt$1@solaris.cc.vt.edu>
Message-ID: <Pokerface.1ovwo1@no-mx.tacticalgamer.com>


rbt Wrote: 
> don freeman wrote:
> > The truth is, Jesus should never have torn down the fig tree. He got
> so
> > pissed off at the fig tree for not having figs, even though it wasn't
> > fig season. This was not the action of someone who has even a little
> > truth and light.
> >
> > Imagine if Jesus came back now. I'd hate to see his road rage.
> >
> 
> Who is this Jesus you are talking about? Does he know Python or
> something? What do fig trees have to do with Python and/or Jesus?
This thread in comp.lang.python obviously shows that Jesus himself
codes Python.  A more ringing endorsement would be hard to find.


-- 
Pokerface:: Posted from Tactical Gamer - http://www.TacticalGamer.com ::



From pgmoscatt at optushome.com.au  Tue May 10 07:14:50 2005
From: pgmoscatt at optushome.com.au (Peter Moscatt)
Date: Tue, 10 May 2005 21:14:50 +1000
Subject: Does TKinter Have A Grid ?
References: <pan.2005.05.10.08.49.16.621818@optushome.com.au>
	<mailman.261.1115716433.29826.python-list@python.org>
Message-ID: <pan.2005.05.10.11.14.46.788772@optushome.com.au>

Mardy.....   that's exactly what I was chasing.  I have downloaded the
tarball now it's just a matter of working out how I use Tcl with Python -
and I guess it won't hurt if I also use Tk in there as well....

Pete


On Tue, 10
May 2005 10:11:59 +0100, Martin Franklin wrote:

> Peter Moscatt wrote:
>> Does TKinter have a Grid widget ?
>> If not (as I assume), what is the alternative ?
>> 
>> Pete
>> 
> 
> Pete,
> 
> If by grid you mean Table widget or Spreadsheet type widget then no Tk
> does not have one (therefore nor does Tkinter)   However as luck would
> have it there are a couple of extensions to Tk that provide a Table 
> widget both Tk 'c' based and Tcl based.
> 
> for more about this (and lots of other useful stuff!)
> 
> http://tkinter.unpythonic.net/wiki/Widgets
> 
> It mentions two Table widgets, Tktable and tablelist both have python 
> (tkinter) wrappers
> 
> Martin



From duncan.booth at invalid.invalid  Wed May 18 10:38:51 2005
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 18 May 2005 14:38:51 GMT
Subject: super() and automatic method combination
References: <7xvf5gra9z.fsf_-_@ruckus.brouhaha.com>
	<Xns965A94007A1BBduncanbooth@127.0.0.1>
	<mailman.147.1116424769.8733.python-list@python.org>
Message-ID: <Xns965A9F2ACC710duncanbooth@127.0.0.1>

Laszlo Zsolt Nagy wrote:

> 
>>The trick is that C.f only calls A.f, but A.f needs to end up calling
>>B.f when it is used in a C.
>>  
>>
> I believe your response only applies to single inheritance. For
> classes with muliple bases classes, you need to call the base methods
> one by one. 

super wouldn't be much use if it only applied to single inheritance.

If you have a class hierarchy:

class Base(object):
class A(Base): 
class B(Base):
class AB(A, B):

and each class has a method 'f' then in an instance of AB:

   super(AB, self).f() --> calls A.f()
   super(A, self).f() --> calls B.f()
   super(B, self).f() --> calls Base.f()

but in an instance of A:

   super(A, self).f() --> calls Base.f()

  
> 
> BTW I prefer to call the base methods in this form:
> 
> class AB(A,B):
>     def f(self):
>        A.f(self)
>        B.f(self)

Which is fine so long as nobody else tries to add further subclasses later:

class C(B): ...
class Mine(AB,C): ...

Mine().f()

Using super throughout this works (it calls f in Mine, AB, A, C, B, and 
then Base), but your explicit call to the base classes means that if you 
don't call C.f() explicitly from Mine it never gets called, and if you do 
call it explicitly from Mine it gets called *after* B.f() has been called 
(and B.f() probably ends up being called twice).

> 
> This arises the question: is there a difference between these:
> 
> super(A,self).f()  # I do not use to use this....
> A.f(self)
> 
They are totally different. Super passes the call along to the next method 
in the defined method resolution order (MRO): the only thing you can be 
sure of here is that super(A,self).f() will never call the method f defined 
in class A (whereas A.f() calls the method f defined in class A or one of 
its base classes).


From fredrik at pythonware.com  Tue May 10 02:59:11 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 10 May 2005 08:59:11 +0200
Subject: sync dir's
References: <428043D7.8030203@open-networks.net>
Message-ID: <d5plm4$fq$1@sea.gmane.org>

Timothy Smith wrote:

> what would be the best tool to use to sync my local dir with a remote
> one, say off a http resorce (although i'm open to other options there) i

rsync?  wget --mirror?

</F>





From bokr at oz.net  Tue May 10 19:07:51 2005
From: bokr at oz.net (Bengt Richter)
Date: Tue, 10 May 2005 23:07:51 GMT
Subject: Merging overlapping spans/ranges
References: <4280b31b$0$198$edfadb0f@dread12.news.tele.dk>
Message-ID: <42813c84.1201907341@news.oz.net>

On Tue, 10 May 2005 15:14:47 +0200, Max M <maxm at mxm.dk> wrote:

>I am writing a "find-free-time" function for a calendar. There are a lot 
>of time spans with start end times, some overlapping, some not.
>
>To find the free time spans, I first need to convert the events into a 
>list of non overlapping time spans "meta-spans".
>
>This nice ascii graph should show what I mean.
>
>1) ---
>2)     ---
>3)   ---
>4)          -----
>5)             -----
>
> >> -------  -------- # meta spans
>
>I can then iterate through the meta-spans and find non-busy times.
>
>I have written the class below, but it is rather O^2, so I wondered if 
>anybody has an idea for a better approach?
>
Maybe (not tested beyond what you see ;-)

 >>> def mergespans(spans):
 ...      start = end = None
 ...      for s,e in sorted(spans):
 ...          if start is None: start, end = s,e; continue
 ...          if s <= end: end = e; continue
 ...          yield start, end
 ...          start,end = s,e
 ...      if start is not None: yield start, end
 ...
 >>> spans = [(0,3), (4,7), (2,5), (9,14), (12,17)]
 >>> list(mergespans(spans))
 [(0, 7), (9, 17)]


Regards,
Bengt Richter


From skip at pobox.com  Tue May 24 10:19:07 2005
From: skip at pobox.com (Skip Montanaro)
Date: Tue, 24 May 2005 09:19:07 -0500
Subject: Hacking the scope to pieces
In-Reply-To: <1116933053.924055.50250@g14g2000cwa.googlegroups.com>
References: <1116933053.924055.50250@g14g2000cwa.googlegroups.com>
Message-ID: <17043.14299.184825.531617@montanaro.dyndns.org>


    Hugh> What I'm after is a way of moduleLoader.loadModule working back up
    Hugh> the scope and placing the imported module in the main global
    Hugh> scope. Any idea how to do this?

You want to write an import hook I think.  I'd start with the docs for the
__import__ builtin.  Also, Google for "python import hook".

Skip


From jhefferon at smcvt.edu  Sat May 28 10:35:57 2005
From: jhefferon at smcvt.edu (Jim)
Date: 28 May 2005 07:35:57 -0700
Subject: CVS interface module
References: <1117288852.725521.239660@o13g2000cwo.googlegroups.com>
	<mailman.214.1117289919.18027.python-list@python.org>
Message-ID: <1117290957.655895.5770@g14g2000cwa.googlegroups.com>

Thank you; in fact I did see that.  Forgive me, but it is often
difficult to tell what on sf is helpful.  I noted the version number
0.1, the file date of 2003, that there are essentially no hits (that
is, that people seem not to be downloading), and that there is almost
no traffic in the forums.  It made me wonder if there was something
else that people were using that somehow I was not finding.  But I
guess I was mistaken.

Thank you also for the svn suggestion, but I am working with an
existing archive that at least at the moment is cvs.

I'll do the download,
Jim



From snail at objmedia.demon.co.uk  Tue May 24 10:15:21 2005
From: snail at objmedia.demon.co.uk (Stephen Kellett)
Date: Tue, 24 May 2005 15:15:21 +0100
Subject: Running PythonNN.DLL as debug or release?
Message-ID: <yVJg2IJ5bzkCFwFe@objmedia.demon.co.uk>

Hi Folks,

We've been using Python embedded in an application for a while now, 
where the Python dll is PythonNN.dll, NN being the version number, such 
as Python24.dll.

Recently it was pointed out to me that Python can run in a debug or 
release configuration and that you can specify this on the command line 
using -O and -OO.

My question is how do I specify this to the Python DLL I have embedded 
in my application? Is it as straightforward as:
o Use PythonNN.dll for release mode Python
o Use PythonNN_d.dll for debug mode Python

and if so, how do I specify I want -O or -OO with release mode?

I've tried looking at the C API documentation but couldn't find anything 
useful there.

We are using versions of Python from 2.2 upwards.

Cheers

Stephen
-- 
Stephen Kellett
Object Media Limited
Computer Consultancy, Software Development
Windows C++, Java, Assembler, Performance Analysis, Troubleshooting


From simonwittber at gmail.com  Tue May 31 02:17:56 2005
From: simonwittber at gmail.com (simonwittber at gmail.com)
Date: 30 May 2005 23:17:56 -0700
Subject: pickle alternative
Message-ID: <1117520276.417970.207680@g14g2000cwa.googlegroups.com>

I've written a simple module which serializes these python types:

IntType, TupleType, StringType, FloatType, LongType, ListType, DictType

It available for perusal here:

http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/415503

It appears to work faster than pickle, however, the decode process is
much slower (5x) than the encode process. Has anyone got any tips on
ways I might speed this up?


Sw.



From sjmachin at lexicon.net  Mon May  2 20:56:56 2005
From: sjmachin at lexicon.net (John Machin)
Date: Tue, 03 May 2005 10:56:56 +1000
Subject: WordPress Python Library 1.0
References: <Rmwde.850131$b5.37722456@news3.tin.it>
	<mailman.49.1115067917.6583.python-list@python.org>
	<VKwde.1322130$35.49403624@news4.tin.it>
	<4276a972.508897235@news.oz.net>
Message-ID: <b1jd715rbgcc9b3eu0538v5ehmldhch4ek@4ax.com>

On Mon, 02 May 2005 22:30:55 GMT, bokr at oz.net (Bengt Richter) wrote:

>On Mon, 02 May 2005 21:14:29 GMT, Michele Ferretti <black.bird at NOSPAMtiscali.it> wrote:
>
>>Fran?ois Pinard wrote:
>>> [Michele Ferretti]
>>> 
>>>>http://www.blackbirdblog.it/programmazione/progetti/28
>>> 
>>> 
>>> Quoted above, the full content of your article.  Is it a message?  It
>>> surely does not look like an English sentence.
>>> 
>>> Should we start a browser each time we see an URL?  Many of us are not
>>> in such an Internet starvation.  If you want to raise our appetite,
>>> maybe a few words of introduction or explanation would be welcome. :-)
>>> 
>>
>>ok, sorry, but subject is very explicit!
>>
>Should we expect your "WordPress Python Library 1.0" to do to words
>what the dry cleaners do to suits and shirts then? ;-)

or perhaps what feet do to grapes?




From correiajREMOVECAPS at hotmail.com  Fri May 20 20:32:05 2005
From: correiajREMOVECAPS at hotmail.com (J Correia)
Date: Sat, 21 May 2005 00:32:05 GMT
Subject: How to receive events (eg. user mouse clicks) from IE
References: <1116476411.853695.235670@g14g2000cwa.googlegroups.com>
	<428c3cbe$1_1@spool9-west.superfeed.net>
	<1116529345.146032.91880@f14g2000cwb.googlegroups.com>
	<428cf5a9$1_1@spool9-west.superfeed.net>
	<1116537405.495521.252570@f14g2000cwb.googlegroups.com>
	<428d0e75$1_2@spool9-west.superfeed.net>
	<1116604655.431664.261430@g49g2000cwa.googlegroups.com>
Message-ID: <9kvje.9749$tt5.727@edtnps90>

<cal_2pac at yahoo.com> wrote in message
news:1116604655.431664.261430 at g49g2000cwa.googlegroups.com...
> Thanks for the response again. The solution is pretty close but not yet
> complete
> This is what I observed.
> a) I tried to use the delay mechanism as suggested below
> ie.
> ie.Navigate('www.google.com')
> while ie.ReadyState !- 4
>        time.sleep(0.5)
>
> d=win32com.client.DispatchWithEvents(ie.Document, Doc_Events)
>
> IE *fails* to load the webpage

Thought this was quite curious so tried it myself (on Python 2.3 Win2k
machine).  Put in some timing conditions and the problem is not that it
fails to load, but that it takes really long (min time during tests = 60
secs
, maximum time 580 secs).

Tried using  just WithEvents, same problem.  The problem seems to
lie with the call to ie.ReadyState while trapping events.  2 things lead me
to believe this...
1) Interrupting the Python code after the browser window opens, results in
the window
 finishing and loading the URL immediately with no problems.
2) Running the code with just Dispatch (no events) and it works fine (< 1
sec).

All I can think is that each call to ie.ReadyState triggers some internal
event which hogs resources to process.

It seems like the problem is with IE Events only... so a possible workaround
(if all you need is the Doc events) is the following:
-------------------------
import win32com.client

class Doc_Events:
    def Ononactivate(self):
        print 'onactivate:', doc.location.href
    def Ononclick(self):
        print 'onclick fired.'
    def Ononreadystatechange(self):
        print 'onreadystatechange:', doc.readyState

ie = win32com.client.Dispatch("InternetExplorer.Application")
ie.Visible = 1
ie.Navigate('http://www.google.com')

while ie.ReadyState != 4:
    time.sleep(1)

doc = ie.Document
doc_events = win32com.client.WithEvents(doc, Doc_Events)
# OR can use following:
# doc = win32com.client.DispatchWithEvents(ie.Document, Doc_Events)

while ie.ReadyState != 4 and doc.readyState != "complete":
    # readystate is case sensitive and differs for ie (R) and doc (r)
    # ie.ReadyState: 0=uninitialised; 1=loading; 2=loaded;
    #                        3=interactive; 4=complete
    time.sleep(1)
-------------------------

HTH,




From francescomoi at europe.com  Wed May 11 13:17:46 2005
From: francescomoi at europe.com (francescomoi at europe.com)
Date: 11 May 2005 10:17:46 -0700
Subject: "/usr/bin/ld: cannot find -lmysqlclient" when building MySQL-Python
Message-ID: <1115831866.751681.39670@g43g2000cwa.googlegroups.com>

Hi. I'm trying to build MySQL-python-1.2.0 on my Linux FC2
(with MySQL 3.23.58).

But when building, I get this error message:
-------------------------------------------------------
[]# python setup.py build
running build
running build_py
running build_ext
building '_mysql' extension
creating build/temp.linux-i686-2.3
gcc -pthread -fno-strict-aliasing -DNDEBUG -O2 -g -pipe -march=i386
-mcpu=i686 -D_GNU_SOURCE -fPIC -fPIC -I/usr/include/python2.3 -c
_mysql.c -o build/temp.linux-i686-2.3/_mysql.o -I'/usr/include/mysql'
gcc -pthread -shared build/temp.linux-i686-2.3/_mysql.o
-L'/usr/lib/mysql' -lmysqlclient -lz -lcrypt -lnsl -lm -lmysqlclient -o
build/lib.linux-i686-2.3/_mysql.so
/usr/bin/ld: cannot find -lmysqlclient
collect2: ld returned 1 exit status
error: command 'gcc' failed with exit status 1
------------------------------------------------------

I've got that library installed:
----------------------------------------------
[]# locate libmysqlclient
/usr/lib/mysql/libmysqlclient.so
/usr/lib/mysql/libmysqlclient_r.so
/usr/lib/mysql/libmysqlclient.a
/usr/lib/mysql/libmysqlclient.so.10
/usr/lib/mysql/libmysqlclient.so.10.0.0
/usr/lib/mysql/libmysqlclient_r.a
/usr/lib/mysql/libmysqlclient_r.so.10.0.0
/usr/lib/mysql/libmysqlclient_r.so.10
---------------------------------------------
[]# vi /etc/ld.so.conf
include ld.so.conf.d/*.conf
/usr/X11R6/lib
/usr/lib/qt-3.3/lib
/usr/local/mysql/lib/mysql
/usr/lib/mysql
----------------------------------------------

What's happening? Thank you very much.



From jchiang at slac.stanford.edu  Sun May 29 11:06:25 2005
From: jchiang at slac.stanford.edu (jchiang at slac.stanford.edu)
Date: 29 May 2005 08:06:25 -0700
Subject: SWIG std::string& passing
In-Reply-To: <1Wcme.850166$w62.249676@bgtnsc05-news.ops.worldnet.att.net>
References: <1Wcme.850166$w62.249676@bgtnsc05-news.ops.worldnet.att.net>
Message-ID: <1117379185.877818.39340@o13g2000cwo.googlegroups.com>

Add the line

%include stl.i

to your .i file.  This will make other stl containers available, in
addition to string. Make sure you put this line before any include
directives for classes that use std::string.  SWIG requires classes to
be declared before they are used in order for the interfaces to be
exposed completely.



From jstroud at mbi.ucla.edu  Sat May 21 00:25:03 2005
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Fri, 20 May 2005 21:25:03 -0700
Subject: count files in a directory
In-Reply-To: <d6m8nc$i4v$2@solaris.cc.vt.edu>
References: <d6m5e1$cr7$1@solaris.cc.vt.edu>
	<mailman.276.1116643081.8733.python-list@python.org>
	<d6m8nc$i4v$2@solaris.cc.vt.edu>
Message-ID: <200505202125.03838.jstroud@mbi.ucla.edu>

Sorry, I've never used os.walk and didn't realize that it is a generator.

This will work for your purposes (and seems pretty fast compared to the 
alternative):

file_count = len(os.walk(valid_path).next()[2])


The alternative is:


import os
import os.path

file_count = len([f for f in os.listdir('.') if os.path.isfile(f)])


On Friday 20 May 2005 08:08 pm, rbt wrote:
> James Stroud wrote:
> > def count_em(valid_path):
> >   root, dirs, files = os.walk(valid_path)
> >   return len(files)
>
> Here's another Tback:
>  >>> Traceback (most recent call last):
>
>    File "C:\Program
> Files\Python24\Lib\site-packages\pythonwin\pywin\framework\scriptutils.py",
> line 310, in RunScript
>      exec codeObject in __main__.__dict__
>    File "C:\Documents and Settings\rbt\Desktop\newa\replicate.py", line 62,
> in ? A = count_em(X)
>    File "C:\Documents and Settings\rbt\Desktop\newa\replicate.py", line 56,
> in count_em root, dirs, files = os.walk(valid_path)
> ValueError: need more than 2 values to unpack

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From lsumnler at gmail.com  Wed May 18 15:52:49 2005
From: lsumnler at gmail.com (len)
Date: 18 May 2005 12:52:49 -0700
Subject: newbie file/DB processing
Message-ID: <1116445969.381550.99280@f14g2000cwb.googlegroups.com>

I am in the process of learning python.  I have bought Learning Python
by Mark Lutz, printed a copy of Dive into Python and various other
books and looked at several tutorials.  I have started a stupid little
project in python and things are proceeding well.  I am an old time
cobol programmer from the IBM 360/370 eria and this ingrained idea of
file processing using file definition (FD's) I believe  is causing me
problems because I think python requires a different way of looking at
datafiles and I haven't really gotten my brain around it yet.  I would
like to create a small sequential file, processing at first to store a
group id, name, amount, and date which I can add to delete from and
update. Could someone point me to some code that would show me how this
is done in python.  Eventually, I intend to expand my little program to
process this file as a flat comma delimited file, move it to some type
of indexed file and finally to some RDBMS system.  My little program
started out at about 9 lines of code and is now at about 100 with 5 or
six functions which I will eventually change to classes (I need to
learn OOP to but one step at a time).

So any recommendations of code, online tutorial, or book that might
address this file processing/database would be appreciated

Thanks 
Len



From fredrik at pythonware.com  Thu May  5 18:08:36 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Fri, 6 May 2005 00:08:36 +0200
Subject: Tons of stats/opens to non-existing files increases Python's
	startupon loaded NFS servers
References: <20050505211519.52192.qmail@web60008.mail.yahoo.com>
Message-ID: <d5e6g3$r2f$1@sea.gmane.org>

Quentin Crain wrote:

> I am being told by my systems people that the load on
> the NFS servers is nasty. Our python installs are up
> on NFS. Also, on a bureaucratic note, I have very
> little input/control into the python builds (sigh).
>
> I have found the following (linux):
>
> strace -f -F python2.2.2 -c 'pass' |& fgrep '(No such
> file or directory)' | wc -l
>  ===> 57
>
> strace -f -F python2.4 -c 'pass' |& fgrep '(No such
> file or directory)' | wc -l
>  ===> 161
>
> Whoa!! After looking at what is being stat'd or
> open'd, it looks like 'encodings' is new in 2.4 and,
> even "worse", everything is looked for as a zip first.

so why not build that ZIP?

ask your administrators to do this:

    $ su
    # cd /usr/local/lib/python2.4
    # zip -0 python24.zip *.pyc */*.pyc */*/*.pyc
    # mv python24.zip ..
    # ^D

and see if that helps (tweak the paths as necessary)

</F>





From maxm at mxm.dk  Mon May  9 09:57:52 2005
From: maxm at mxm.dk (Max M)
Date: Mon, 09 May 2005 15:57:52 +0200
Subject: Trouble saving unicode text to file
In-Reply-To: <mailman.207.1115645364.29826.python-list@python.org>
References: <1115500976.571232.76100@z14g2000cwz.googlegroups.com><427DDAA5.9020606@v.loewis.de><t4qr71h88us709h4es4oa4fbamnkgkj0sj@4ax.com><427E5136.4000300@v.loewis.de>	<gq0t7194aiuock5t67gqvudokla2lr7hbp@4ax.com>
	<mailman.207.1115645364.29826.python-list@python.org>
Message-ID: <427f6c37$0$283$edfadb0f@dread12.news.tele.dk>

Fredrik Lundh wrote:

> (I just noticed that there's no euro sign on my swedish keyboard.  I've
> never missed it ;-)

It's probably "AltGR + E" like here in DK

-- 

hilsen/regards Max M, Denmark

http://www.mxm.dk/
IT's Mad Science


From rrr at ronadam.com  Mon May 16 00:16:31 2005
From: rrr at ronadam.com (Ron Adam)
Date: Mon, 16 May 2005 00:16:31 -0400
Subject: Quick Reference from module doc strings.
In-Reply-To: <42880d98$1@nntp0.pdx.net>
References: <mailman.65.1116085574.29328.python-list@python.org>	<1116199904.205240.58300@g49g2000cwa.googlegroups.com>	<mailman.15.1116204313.8733.python-list@python.org>
	<42880d98$1@nntp0.pdx.net>
Message-ID: <42881E9F.60009@ronadam.com>

Scott David Daniels wrote:

> Althought object is a horrible name for your own value (there is a builtin
> object which you use for defining new-style classes), you probably want:

Good point, I agree.  It's a bad habit to start, sooner or later it 
would cause a problem.  I'll find something else to call it.

>      if isinstance(object, (str,int,bool,tuple,list,dict)):
>          ...
> or (as John Machin was trying to suggest):
> 
>      if isinstance(object, TYPES_WHICH_whatever):
>          ...
> 
> This allows you to use instances of those builtin types and any
> user-defined subtypes.
> 
> 
>>Thanks, I don't need the isinstance(), type works here just as well.
> 
> 
> But the isinstance version is better than the type(...) in ... version.

Ok, done.  I didn't think to look it up in the quick reference this 
prints out.  LOL,  Thanks Scott  :-)

I'm not sure if isinstance() would make a difference, it doesn't for 
__builtins__, but it might in some other modules.

> --Scott David Daniels
> Scott.Daniels at Acm.Org


Do you have any feature suggestions, additional information that could 
go in, something that would extend the content in some way and make it 
more useful?

As it stands now, it could be just a module, so you could...


Regards,
_Ron



The current version is now....


# qref.py
"""
Generate a quick reference for a module by analyzing
a modules contents.

Use example:
     import qref
     import sys
     print qref.quickref("sys")
"""

def getobjs(obj, dlist=[], lvl=0, maxlevel=1):
     """ Retreive a list of sub objects from an object. """
     if obj not in dlist:
         dlist.append(obj)
     if lvl<maxlevel:
         dobj = dir(eval(obj))
         for item in dobj:
             try:
                 dlist = getobjs(obj+'.'+item, dlist, lvl+1)
             except:
                 pass
     return dlist

def printdoc(objectlist):
     """ Return a sorted printable quick reference
         guide from a list of objects. """
     outtext = []
     objectlist.sort(lambda x, y: cmp(x.lower(), y.lower()))
     for obj in objectlist:
         objt = eval(obj)
         objt_type = type(objt)
         outtext.append('-'*40+'\n')
         outtext.append(str(obj)+'\n')
         if hasattr(objt, '__module__'):
             outtext.append("Module:"+str(objt.__module__)+'\n')
         if hasattr( objt,'__class__'):
             outtext.append("Class:"+str(objt.__class__)+'\n\n')
         else:
             outtext.append("Type:"+str(objt_type)+'\n\n')
         if isinstance(objt,str):
             if len(objt)>200:
                 s = objt[0:200]+"......"
             else:
                 s = objt
             outtext.append(obj+'=')
             if '\n' in s: quotes='"""'
             else: quotes ='"'
             if len(s)>60: print
             outtext.append(quotes+s+quotes+'\n\n')
         elif isinstance(objt,(int,bool,tuple,list,dict)):
             s = str(objt)
             if len(s)<200:
                 outtext.append(obj+'='+s+'\n\n')
             else:
                 outtext.append(obj+'='+s[0:200]+'......\n\n')
         if hasattr(objt,'__doc__'):
             if objt.__doc__ != type(objt).__doc__:
                 outtext.append(str(objt.__doc__)+'\n\n')
     outtext.append('-'*40+'\n')
     return ''.join(outtext)

def quickref(name):
     """
     quickref(module_name) -> printable string

     Generate a sorted quick reference guide from an objects
     doc strings.  The module_name is a string with the name of
     the module or class to get documents string from.

     Example:
         import os
         print quickref('os')
     """
     objlist = getobjs(name)
     return printdoc(objlist)

if __name__ == "__main__":
     print quickref('__builtins__')












From gandalf at geochemsource.com  Wed May 18 15:06:27 2005
From: gandalf at geochemsource.com (Laszlo Zsolt Nagy)
Date: Wed, 18 May 2005 21:06:27 +0200
Subject: EpyDoc problem
In-Reply-To: <428A66A8.9090000@geochemsource.com>
References: <428A5CAA.906@geochemsource.com>
	<428A66A8.9090000@geochemsource.com>
Message-ID: <428B9233.2080206@geochemsource.com>


>Looks like it is a problem with wxWidgets. There is no problem if I do 
>not import wx. How to overcome this problem?
>Currently I cannot document modules that import wx. :-(
>  
>
I found the answer on the wxPython-users list.
It is disappointing that the standard documentation tool has no support. 
:-(
I had to patch EpyDoc. The author was not responding and there is no 
mailing
list for EpyDoc. Is it still a live project?

-- 
_________________________________________________________________
  Laszlo Nagy		      web: http://designasign.biz
  IT Consultant		      mail: gandalf at geochemsource.com

     		Python forever!




From nopa90 at gmail.com  Wed May  4 08:06:00 2005
From: nopa90 at gmail.com (nopa90 at gmail.com)
Date: 4 May 2005 05:06:00 -0700
Subject: Announcing CherryShell a python shell in your webbrowser
Message-ID: <1115208360.510884.269400@z14g2000cwz.googlegroups.com>

A python interpreter embedded in a cherrypy webserver and controlled by
webbrower. Powered by AJAX. Currently only version 0.10 and only works
with firefox.

http://john.thetrotter.net

Also example of using cherrypy with AJAX (jsonrpc)



From irmen.NOSPAM at xs4all.nl  Wed May 25 14:16:57 2005
From: irmen.NOSPAM at xs4all.nl (Irmen de Jong)
Date: Wed, 25 May 2005 20:16:57 +0200
Subject: Pyro2.3 problem
In-Reply-To: <mailman.102.1117042357.18027.python-list@python.org>
References: <mailman.102.1117042357.18027.python-list@python.org>
Message-ID: <4294c119$0$2472$e4fe514c@news.xs4all.nl>

Golawala, Moiz M (GE Infrastructure) wrote:
> Hi All,
> 
> I am seeing some interesting behavior with Pyro 2.3. I created a server using Pyro2.2
> and a client on a different machine with Python2.2 and communication was just fine (I
> am not using a Name server). However when I upgraded the client to Pyro2.3 (the
> server was sill on Pyro2.2) and try and communicate with the server, I get a bunch of
> exception telling me that there is a problem with the URI etc..
[...]

Why are you still using this ancient version?! Pyro 2.2/2.3 is
almost 4 (four) years old! There have been uncountable improvements
and fixes in the versions after that!

Please upgrade to a later version, 3.4 or 3.5beta (released last february).

--Irmen


From rwackerle at mme.gov.na  Sun May 15 07:23:59 2005
From: rwackerle at mme.gov.na (rwackerle at mme.gov.na)
Date: Sun, 15 May 2005 11:23:59 GMT
Subject: Transparenz ist das Mindeste
Message-ID: <2da74883c7e12dfed082@mme.gov.na>

Lese selbst:
http://www.npd.de/npd_info/deutschland/2005/d0405-39.html


From mauriceling at acm.org  Thu May 19 19:32:01 2005
From: mauriceling at acm.org (Maurice LING)
Date: Fri, 20 May 2005 09:32:01 +1000
Subject: Is Python suitable for a huge, enterprise size app?
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>	<jmbsl2-opn.ln1@lairds.us>	<1116442276.918194.194110@g44g2000cwa.googlegroups.com>
	<mailman.163.1116443300.8733.python-list@python.org>
	<428c479f$0$31062$626a14ce@news.free.fr>
	<d6i08p$22o$1@domitilla.aioe.org>
	<qcidnZRl9uEDBRHfRVn-qQ@powergate.ca>
Message-ID: <d6j7lj$h3m$1@domitilla.aioe.org>

Peter Hansen wrote:

> Maurice LING wrote:
> 
>> It makes big difference (legally) to if the codes are there and 
>> someone sees it, to if the codes are locked in some packaged or zipped 
>> form and someone reverse-engineer it. It is legally as different as if 
>> you drop money on the ground and I pick it up, to pick-pocketing you 
>> and take the money.
>>
>> Nobody seems to be able to understand this simple logic.
> 
> 
> So you're saying that reverse engineering Java bytecode is illegal, 
> while doing the same with Python bytecode is not?  Or something like 
> that?  (And you're a lawyer, right?  Because if you're not, and you're 
> not citing your sources, why is it we should put any value in these 
> comments about what is (legally) true?)
> 
> -Peter

What I'm saying is reverse engineering anything is illegal unless 
allowed by the laws of the state, be it <your language> bytecodes or 
compiled executables, but if the original source codes are there, you 
can see it.

To put it sexually and crudely (to get the idea across), if a female 
strips and parade in front of me, I'm not violating any law to open my 
eyes and look at it (whether morally or religiously right is a total 
different matter) but it is criminal for me to grab any moving female, 
strip her and look at her naked. Can see the point?

maurice


From claird at lairds.us  Wed May 11 07:08:03 2005
From: claird at lairds.us (Cameron Laird)
Date: Wed, 11 May 2005 11:08:03 GMT
Subject: Listing of declared variables and functions
References: <1115657899.543887.284720@f14g2000cwb.googlegroups.com>
	<mailman.301.1115745236.29826.python-list@python.org>
Message-ID: <lm49l2-e23.ln1@lairds.us>

In article <mailman.301.1115745236.29826.python-list at python.org>,
Fernando Perez  <fperez.net at gmail.com> wrote:
>ohms377 wrote:
>
>> Dear python users,
>> 
>> In interactive mode, I was wondering if there is a way to list all
>> declared variables and functions (and from global workspace).
>
>In [1]: def foo(): pass
>   ...:
>
>In [2]: x=1
>
>In [3]: a='hello'
>
>In [4]: import re
>
>In [5]: whos
>Variable   Type        Data/Info
>--------------------------------
>a          str         hello
>foo        function    <function foo at 0x403b725c>
>re         module      <module 're' from '/usr/lib/python2.3/re.pyc'>
>x          int         1
>
>In [6]: whos int
>Variable   Type    Data/Info
>----------------------------
>x          int     1
>
>
>This is using ipython for the interactive work.
			.
			.
			.
Fernando's IPython is indeed a great thing, one I often recommend.
I think you might want to know, though, that local and global heaps
are readily available even without it:
  Python 2.3.5 (#2, Mar 26 2005, 17:32:32) 
  [GCC 3.3.5 (Debian 1:3.3.5-12)] on linux2
  Type "help", "copyright", "credits" or "license" for more information.
  >>> a = 3
  >>> locals()
  {'__builtins__': <module '__builtin__' (built-in)>, '__name__':
  '__main__', '__doc__': None, 'a': 3}
  >>> globals()
  {'__builtins__': <module '__builtin__' (built-in)>, '__name__':
  '__main__', '__doc__': None, 'a': 3}


From jepler at unpythonic.net  Wed May 11 08:22:09 2005
From: jepler at unpythonic.net (Jeff Epler)
Date: Wed, 11 May 2005 07:22:09 -0500
Subject: Using TCL files in Python ?
In-Reply-To: <pan.2005.05.11.09.15.00.27816@optushome.com.au>
References: <pan.2005.05.11.09.15.00.27816@optushome.com.au>
Message-ID: <20050511122206.GA3654@unpythonic.net>

While I've never used it, there *is* a Tix module in Python which
appears to wrap the widgets provided by Tix.  In Fedora Core 2, Python
doesn't seem to be configured to use Tix OOTB but a one-liner (that
should be harmless elsewhere) does make it work.

These classes are defined in the Tix module:
['Shell', 'Meter', 'TixSubWidget', 'ExFileSelectDialog',
'NoteBookFrame', 'DirSelectDialog', 'Control', 'LabelEntry',
'ButtonBox', 'ScrolledTList', 'Select', 'HList', 'Balloon', 'PopupMenu',
'DirSelectBox', 'ComboBox', 'ScrolledWindow', 'Grid', 'CheckList',
'DialogShell', 'Tree', 'DirList', 'ResizeHandle', 'NoteBook',
'ListNoteBook', 'ScrolledGrid', 'FileEntry', 'ScrolledHList', 'DirTree',
'OptionMenu', 'ScrolledText', 'LabelFrame', 'FileSelectBox',
'ScrolledListBox', 'InputOnly', 'PanedWindow', 'StdButtonBox',
'FileSelectDialog', 'CObjView', 'ExFileSelectBox', 'TList']

Here's what I did to get a simple Tix widget to work:
>>> import Tkinter, Tix
>>> t = Tkinter.Tk()
>>> t.tk.call("package", "require", "Tix")
'8.1.8.4'
>>> u = Tix.ComboBox(t)
>>> for i in range(30): u.insert("end", "Item %d" % i)
... 
>>> u.pack()

Jeff
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From peter at engcorp.com  Thu May 26 22:57:36 2005
From: peter at engcorp.com (Peter Hansen)
Date: Thu, 26 May 2005 22:57:36 -0400
Subject: Strange Execution Times
In-Reply-To: <mailman.154.1117146166.18027.python-list@python.org>
References: <3A252A14-E6A4-4F9B-AB49-B6B012A0BC12@curi.us>
	<mailman.154.1117146166.18027.python-list@python.org>
Message-ID: <sY2dnS1uRuJnEQvfRVn-3Q@powergate.ca>

John Machin wrote:
> Then post your summarised results back to the newsgroup for the benefit 
> of all -- there's this vague hope that folk actually read other peoples' 
> posts before firing off questions :-)

+1 QOTW

:-)


From correiajREMOVECAPS at hotmail.com  Mon May  2 00:00:50 2005
From: correiajREMOVECAPS at hotmail.com (J Correia)
Date: Mon, 02 May 2005 04:00:50 GMT
Subject: Webbrowser On Windows
References: <mailman.85.1114978611.14961.python-list@python.org>
Message-ID: <SBhde.23647$HR1.2796@clgrps12>

><andrea_gavana at tin.it> wrote in message
news:mailman.85.1114978611.14961.python-list at python.org...
>It seems to me that there is no way to create a new instance of Internet
>Explorer (if there are already some IE windows opened).
>Does anyone know a possible solution? Or a workaround (without using
>startfile, maybe?) that will force IE to create a new instance?

>Should I suppose no solution exists?

>Thanks for every suggestions.

>Andrea


import pythoncom
from win32com.client import Dispatch

ie1 = pythoncom.CoCreateInstance("InternetExplorer.Application", None,\
                     pythoncom.CLSCTX_SERVER,
                     pythoncom.IID_IDispatch)
ie1 = Dispatch(ie1)
ie1.Visible = 1

ie2 = pythoncom.CoCreateInstance("InternetExplorer.Application", None,\
                     pythoncom.CLSCTX_SERVER,
                     pythoncom.IID_IDispatch)
ie2 = Dispatch(ie2)
ie2.Visible = 1

....and so on for as many instances as you want.

HTH.







From jjl at pobox.com  Mon May 16 19:24:19 2005
From: jjl at pobox.com (John J. Lee)
Date: 16 May 2005 23:24:19 +0000
Subject: Python on a public library computer
References: <1116069664.779281.320540@g47g2000cwa.googlegroups.com>
Message-ID: <87r7g6rbz0.fsf@pobox.com>

"anton.vredegoor at gmail.com" <anton.vredegoor at gmail.com> writes:

> Here's my situation:
> 
> I'm typing this in a public library on a computer with OS windows 2000
> server. I can run Internet explorer, word, excel and powerpoint, that's
> it. Maybe java, but it seems to be flaky.
> 
> I want to run python scripts from this computer. At home I have a
> multi-computer network (from better times) but no internet access
[...]

Why not Jython?


John


From whocaresrmb at yahoo.com  Sun May 15 00:25:49 2005
From: whocaresrmb at yahoo.com (Johnny Gentile)
Date: 14 May 2005 21:25:49 -0700
Subject: stop
In-Reply-To: <wemdnVcXpcOIIxvfRVn-tQ@comcast.com>
References: <1116096706.696830.275140@g44g2000cwa.googlegroups.com>
	<Etvhe.1353573$8l.349001@pd7tw1no>
	<wemdnVcXpcOIIxvfRVn-tQ@comcast.com>
Message-ID: <1116131149.288712.149610@g49g2000cwa.googlegroups.com>


Enough salvation for one day.



From vladimir.n.ivanov at gmail.com  Tue May  3 10:13:33 2005
From: vladimir.n.ivanov at gmail.com (mahasamatman)
Date: 3 May 2005 07:13:33 -0700
Subject: Py2Exe security
In-Reply-To: <1115121780.404491.84240@f14g2000cwb.googlegroups.com>
References: <1115121780.404491.84240@f14g2000cwb.googlegroups.com>
Message-ID: <1115129613.564775.21660@g14g2000cwa.googlegroups.com>

I suggest You to use base 64 encoded strings
something like
password = 'aGlkZGVuX3Bhc3N3b3Jk\n'
password = pasword.decode("base64")



From skip at pobox.com  Sat May 28 18:47:19 2005
From: skip at pobox.com (Skip Montanaro)
Date: Sat, 28 May 2005 17:47:19 -0500
Subject: Copy paste in entry widget
In-Reply-To: <1117200716.423741.257870@f14g2000cwb.googlegroups.com>
References: <1117200716.423741.257870@f14g2000cwb.googlegroups.com>
Message-ID: <17048.62711.132120.771690@montanaro.dyndns.org>


    Michael> is copy, paste, cut of selection possible in entry widget? Docs
    Michael> say selection must be copied by default, in my programm it
    Michael> doesn't work.

What platform?  What GUI toolkit?

-- 
Skip Montanaro
skip at pobox.com


From fredrik at pythonware.com  Fri May 13 09:39:39 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Fri, 13 May 2005 15:39:39 +0200
Subject: doc tags?
References: <965c85e5050513062433f180d3@mail.gmail.com>
Message-ID: <d62a82$i67$1@sea.gmane.org>

Wolfram Kriesing wrote:

> i was already searching and remember i had seen something like "its not needed".
>
> Anyway, are there any doc tags, like in Java/PHPDoc etc, where you can
> describe parameters (@param[eter]), return values (@ret[urn]),
> attributes (@var), references (@see), etc?

do you want to use javadoc-style comments for your documentation?

    http://effbot.org/zone/pythondoc.htm

or are you just looking for some syntactic construct that uses an at-
sign?

    http://www.python.org/peps/pep-0318.html
    http://docs.python.org/ref/function.html

</F>





From vcsekhar007 at yahoo.com  Sat May  7 08:44:14 2005
From: vcsekhar007 at yahoo.com (Vijay Chandra Sekhar Parepalli)
Date: Sat, 7 May 2005 05:44:14 -0700 (PDT)
Subject: Array programming
Message-ID: <20050507124414.40448.qmail@web60711.mail.yahoo.com>

Thank you, Sakesun. 


-----Original Message-----
From: Sakesun Roykiattisak
[mailto:sakesun at boonthavorn.com] 
Sent: Saturday, May 07, 2005 12:17 PM
To: V.C.Sekhar
Cc: python-list at python.org
Subject: Re: Array programming

V.C.Sekhar wrote:

>Hi there,
>   I couldnt get to do the following task using
Python. Can some pls 
>suggest me a way to do this.
>
>I have an array with duplicate strings filled in it.
Now am looking for 
>a way to extract only the DISTINCT Values from that
array.
>
>Could some one pls help me out.
>
>Thanks in advance,
>Sekhar
>
>
>  
>

try use "set" or "frozenset", if you use python2.4
or try "sets.Set" or "sets.ImmutableSet", if you use
python2.3

 >>> import sets
 >>> s = sets.Set([1,1,2,3,2,4])
 >>> for x in s: print x
1
2
3
4




		
__________________________________ 
Do you Yahoo!? 
Yahoo! Mail - Find what you need with new enhanced search. 
http://info.mail.yahoo.com/mail_250


From finite.automaton at gmail.com  Wed May 18 15:10:12 2005
From: finite.automaton at gmail.com (Lonnie Princehouse)
Date: 18 May 2005 12:10:12 -0700
Subject: speeding up Python script
References: <3evgolF56gtkU3@individual.net>
	<mailman.125.1116378401.8733.python-list@python.org>
	<3f0os2F4lpshU1@individual.net>
Message-ID: <1116443412.758374.267270@g49g2000cwa.googlegroups.com>

Quick tip-
  Try xrange instead of range.  This will use dramatically less memory
if your search space is large, which will speed things up /if/ your
machine is being forced to swap.

Besides that, without seeing the code for your functions, it's hard to
offer more advice.  Your algorithm is necessarily going to take a long
time because you're enumerating all of the possible values of your
functions in a six dimensional space!!   Recoding the whole program in
C would get you maybe an order of magnitude increase for any given
problem size, but it will still get really slow as the size of your
search space increases.

What are function1, function2, and function3?  You might really
consider looking into some numerical methods for optimization if you're
just trying to find the smallest/largest value of ia.



From steven.bethard at gmail.com  Sun May  8 18:18:22 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Sun, 08 May 2005 16:18:22 -0600
Subject: A question about inheritance
In-Reply-To: <1115579277.999256.269960@f14g2000cwb.googlegroups.com>
References: <1115579277.999256.269960@f14g2000cwb.googlegroups.com>
Message-ID: <2tudnU9xaaG2DePfRVn-1A@comcast.com>

arserlom at gmail.com wrote:
> Hello I have a question about inheritance in Python. I'd like to do
> something like this:
> 
>  class cl1:
>   def __init__(self):
>    self.a = 1
> 
>  class cl2(cl1):
>   def __init__(self):
>    self.b = 2
> 
> But in such a way that cl2 instances have atributes 'b' AND 'a'.
> Obviously, this is not the way of doing it, because the __init__
> definition in cl2 overrides cl1's __init__.
> 
> Is there a 'pythonic' way of achieving this?

If there's a chance you might have multiple inheritance at some point in 
this hierarchy, you might also try using super:

class cl1(object): # note it's a new-style class
     def __init__(self):
         self.a = 1

class cl2(cl1):
     def __init__(self):
         super(cl2, self).__init__()
         self.b = 2

Note that you probably want a new-style class even if you chose not to 
use super in favor of Jp Calderone's suggestion.  There are very few 
cases for using old-style classes these days.

STeVe


From mnations at gmail.com  Thu May 26 00:20:06 2005
From: mnations at gmail.com (Mudcat)
Date: 25 May 2005 21:20:06 -0700
Subject: Design problem...need some ideas
Message-ID: <1117081206.100096.298770@g49g2000cwa.googlegroups.com>

Howdy,

I'm trying to create a selection helper, just like in Google or other
places where a drop-down menu appears below the text selection box when
you enter some text. As you type, the choices are narrowed based on the
characters entered.

I have everything worked out but the actual menu which is giving me
problems. My first attempt was using a Pmw.ScrolledListBox and taking
advantage of the inherent drop-down menu. I was attempting to invoke
the menu and change the list as characters were typed.

However, I found I was getting focus problems. When the menu is
invoked, focus in the entry box is lost which makes it impossible for
the user to continue typing his selection. When focus is returned to
the entry box, the drop-down menu disappears. Is there a way to make
this work?

Or, is there a better way? My Plan B was to create a new toplevel
window and place it using screen geometry to appear right below the
entry box. The window was going to contain just a listbox that
contained the selections. But I fear this may pose many more problems,
focus just being one of them.

Thanks ahead of time for the help,
Marc



From danb_83 at yahoo.com  Sat May  7 23:09:44 2005
From: danb_83 at yahoo.com (Dan Bishop)
Date: 7 May 2005 20:09:44 -0700
Subject: Python Pseudo-Switch
References: <mailman.156.1115512603.29826.python-list@python.org>
Message-ID: <1115521784.759801.308350@o13g2000cwo.googlegroups.com>

James Stroud wrote:
> Hello All,
>
> Because of my poorly designing a database, I have recently found it
necessary
> to explore the wonders of the Python pseudo-switch:
>
> do_case = { "A" : lambda x: x["bob"],
>             "B" : lambda x: x["carol"],
>             "C" : lambda x: "Ted",
>             "D" : lambda x: do_something(x) }
>
> my_thing = do_case[get_value_from_thin_air()](adict)
>
>
> How to handle this kind of thing when lambda is removed from the
language,
> beside the obvious def'ing those tiny little functions?

You can always re-invent lambda.

>>> def lambda2(arg_names, expression):
...    exec 'def _(%s): return %s' % (','.join(arg_names), expression)
...    return _
...
>>> add = lambda2(('x', 'y'), 'x + y')
>>> add(3, 4)
7



From AOLfan250129 at yahoo.com  Sun May 22 19:36:34 2005
From: AOLfan250129 at yahoo.com (AOLfan250129 at yahoo.com)
Date: 22 May 2005 16:36:34 -0700
Subject: GREAT VIDEO! >> http://www.tbn.org/films/videos/To_Hell_And_Back.ram
	<< Just click link to view the free video.......... May 22,
	2005 7:37:11 pm
Message-ID: <1116804994.655007.278080@g49g2000cwa.googlegroups.com>

GREAT VIDEO! >> http://www.tbn.org/films/videos/To_Hell_And_Back.ram <<
Just click link to view the free video.......... May 22, 2005 7:37:12 pm



From percivall at gmail.com  Sun May 15 21:05:04 2005
From: percivall at gmail.com (Simon Percivall)
Date: 15 May 2005 18:05:04 -0700
Subject: MacOS X drag & drop?
References: <4287e4e2$0$64529$e4fe514c@news.xs4all.nl>
Message-ID: <1116205504.167220.35760@f14g2000cwb.googlegroups.com>

Take a look at Platypus at http://sveinbjorn.sytes.net/platypus. It
will make it easier for you.



From gsakkis at rutgers.edu  Fri May  6 12:06:48 2005
From: gsakkis at rutgers.edu (George Sakkis)
Date: 6 May 2005 09:06:48 -0700
Subject: Getting number of iteration
References: <d5g42o$jc5$00$1@news.t-online.com>
Message-ID: <1115395608.943185.39060@o13g2000cwo.googlegroups.com>

"Florian Lindner" wrote:

> Hello,
> when I'm iterating through a list with:
>
> for x in list:
>
> how can I get the number of the current iteration?
>
> Thx,
>
> Florianfor

in python 2.3+:

for i,x in enumerate(sequence):
    print "sequence[%d] = %s" %(i,x)


George



From mage at mage.hu  Thu May 19 05:21:12 2005
From: mage at mage.hu (Mage)
Date: Thu, 19 May 2005 11:21:12 +0200
Subject: datetime
In-Reply-To: <47736$428c56e3$9117fe9b$26924@news2.tudelft.nl>
References: <47736$428c56e3$9117fe9b$26924@news2.tudelft.nl>
Message-ID: <428C5A88.1000209@mage.hu>

Nader Emami wrote:

>L.S.,
>
>It is very simple question: Why doesn't work the next statments?
>
>import datetime
>
>today = datetime.date.today()
>
>  
>
Works on python 2.3.5

       Mage



From cowie.rob at gmail.com  Tue May 31 07:09:45 2005
From: cowie.rob at gmail.com (Rob Cowie)
Date: 31 May 2005 04:09:45 -0700
Subject: Newbie Here
In-Reply-To: <d7h86n$ebs$1@swifty.westend.com>
References: <mailman.273.1117521603.18027.python-list@python.org>
	<d7h86n$ebs$1@swifty.westend.com>
Message-ID: <1117537785.157570.64630@g47g2000cwa.googlegroups.com>

As a relalative newbie myself I think I can say Python is used for
anything any major programming language is used for. One of its many
strengths is scalability - it can be used to great effect as a
scripting language AND as an object oriented language for creating
large, GUI apps.

Yours is not an easy question to answer - there are as many uses for
python as there are 'computing tasks'.

Go to http://www.awaretek.com/tutorials.html for a load of tutorials
and examples



From iconmags3 at btconnect.com  Wed May 11 18:13:43 2005
From: iconmags3 at btconnect.com (David Kilpatrick)
Date: Wed, 11 May 2005 22:13:43 +0000 (UTC)
Subject: Jesus said, "I am the way, the truth and the life: no one can
	come to the Father(God)(in Heaven),
	but by me." (John 14:6) This means that
	if you die without trusting in Jesus Christ as your Lord and Saviour
	you will die in your sins and be forever sepa
In-Reply-To: <3eevb8F2pac7U1@individual.net>
References: <1115824563.613661.169620@g47g2000cwa.googlegroups.com>
	<M%qge.1317047$Xk.244810@pd7tw3no> <3eeta6F2m45kU1@individual.net>
	<1115832484.237918.53830@o13g2000cwo.googlegroups.com>
	<3eevb8F2pac7U1@individual.net>
Message-ID: <d5u02n$he7$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>



MC05 wrote:

> "Matt Hayden" <meh1963 at gmail.com> wrote in message
> news:1115832484.237918.53830 at o13g2000cwo.googlegroups.com...
> 
>>MC05 wrote:
>>
>>>"don freeman" <dfreem3 at nospam.shaw.ca> wrote in message
>>>news:M%qge.1317047$Xk.244810 at pd7tw3no...
>>>
>>>>The truth is, Jesus should never have torn down the fig tree. He
>>
>>got so
>>
>>>>pissed off at the fig tree for not having figs, even though it
>>
>>wasn't
>>
>>>>fig season. This was not the action of someone who has even a
>>
>>little
>>
>>>>truth and light.
>>>>
>>>>Imagine if Jesus came back now. I'd hate to see his road rage.
>>>
>>>I'm sure he'd drive fine.
>>>
>>>But if a fig tree pulled in front of him.......woof!!
>>>
>>What if a fig leaf pulled off in front of him?
> 
> 
> I suppose he could point at what he saw and wither it.
> 
> 


The man just liked dried figs. There't nothing more annoying than a fig 
tree which has lost its figs. They squelch underfoot and go rotten on 
the ground and get full of ants.



From dsafl at fald.com  Wed May 25 11:08:28 2005
From: dsafl at fald.com (dsafl at fald.com)
Date: Wed, 25 May 2005 15:08:28 +0000 (UTC)
Subject: ºô­¶±H¦sªA°È­p¹º¶R¤Q°e¤G..............................................................................................................................................................................................................................................................................................
Message-ID: <d724dc$i37$282@news.hgc.com.hk>

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From fredrik at pythonware.com  Fri May 13 13:56:59 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Fri, 13 May 2005 19:56:59 +0200
Subject: create words of various lengths
References: <1116002403.374232.210220@g49g2000cwa.googlegroups.com><mailman.42.1116004127.29328.python-list@python.org>
	<1116005453.047943.153790@g14g2000cwa.googlegroups.com>
Message-ID: <d62pag$a7j$1@sea.gmane.org>

superprad at gmail.com wrote:

> no specific number of words.

anything between one and a gazillion, you mean?  having some idea of
the upper bound helps when chosing what algorithm/database/computer
to use...

> and I get a syntax error on line:
> > words["".join(choice(alphabet) for i in range(randint(1,15)))] = None

so what's your excuse for not using a recent version of Python? ;-)

if you're stuck with an older version,

    words["".join([choice(alphabet) for i in range(randint(1,15))])] = None

should work.

</F>





From peter at engcorp.com  Tue May 31 11:31:22 2005
From: peter at engcorp.com (Peter Hansen)
Date: Tue, 31 May 2005 11:31:22 -0400
Subject: sys.stderr and thread
In-Reply-To: <429c500c$0$15913$5fc30a8@news.tiscali.it>
References: <429c500c$0$15913$5fc30a8@news.tiscali.it>
Message-ID: <w4ednaVTK6v_HgHfRVn-og@powergate.ca>

Michele Petrazzo wrote:
> I have a wxpython application (the main program) and a lot of external
> modules (import mymodule) that use always 2 thread (one is my
> application and one is twisted with new threadselectreactor).
> Sometime when I close my app, I receive a thread error that I want to
> redirect to a file (I don't know why this error occur, but this is
> another problem...).

This looks like it must be an exception in a *daemon* thread that is 
still running even as the Python interpreter dismantles itself at 
application exit.

> This is the exception:
> 
> Unhandled exception in thread started by <bound method
> Thread.__bootstrap of <Thread(Thread-1, stopped daemon)>>
> Traceback (most recent call last):
>   File "C:\Python23\lib\threading.py", line 451, in __bootstrap
>     self.__stop()
>   File "C:\Python23\lib\threading.py", line 460, in __stop
>     self.__block.notifyAll()
>   File "C:\Python23\lib\threading.py", line 256, in notifyAll
>     self.notify(len(self.__waiters))
>   File "C:\Python23\lib\threading.py", line 238, in notify
>     currentThread() # for side-effect
> TypeError: 'NoneType' object is not callable

One of the steps the interpreter takes is to go through all modules and 
rebind all globals to None.  I suspect currentThread is a global in the 
above (although I thought that particular issue was fixed in Python 
2.4... are you running an older version?).

The "simplest" thing to do is to ignore this exception because it's 
spurious".  One way to ignore it is simply to wrap that particular 
daemon thread's "run" method with a "try/except: pass" so that all 
exceptions are swallowed quietly.  Often that's not preferable, however, 
since it will of course swallow real exceptions too.

The "safest" thing to do is to terminate that daemon thread before the 
application exits.  That basically means setting it to be a daemon 
thread is sort of pointless, but there's not really a much better solution.

A google search for "python interpreter thread bind global none" or 
something awful like that will probably turn up some background 
material, likely written by Tim Peters. :-)

-Peter


From cjbottaro at alumni.cs.utexas.edu  Fri May 13 10:35:15 2005
From: cjbottaro at alumni.cs.utexas.edu (Christopher J. Bottaro)
Date: Fri, 13 May 2005 09:35:15 -0500
Subject: How to find the classname of an object? (was Python Documentation)
References: <mailman.503.1115940149.29826.python-list@python.org>
	<hGRge.14335$941.9700@trnddc08> <4283fda8.18221170@news.oz.net>
Message-ID: <d62dg3$tpe$1@sea.gmane.org>

Bengt Richter wrote:

>  >>> type(obj)
>  <class '__main__.A'>
>  >>> type(obj).mro()
>  [<class '__main__.A'>, <class '__main__.B1'>, <class '__main__.B2'>,
>  [<class '__main__.C'>, <type 'object'>]
>  >>> tuple(x.__name__ for x in type(obj).mro())
>  ('A', 'B1', 'B2', 'C', 'object')

Wow awesome, thats exactly what I was looking for.  I hate to bring up the
documentation thing again...but.....where the hell is this in the
documentation?  I looked under built-in function at type(), but it doesn't
give any info or links on the "type object".

Thanks.

--C



From rkern at ucsd.edu  Wed May 11 00:10:38 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Tue, 10 May 2005 21:10:38 -0700
Subject: Encryption with Python?
In-Reply-To: <5amdnbPrL_uT_BzfRVn-tQ@powergate.ca>
References: <1115324411.952821.150780@o13g2000cwo.googlegroups.com><001301c552db$dd19d3e0$0201a8c0@mcuf7>	<d5i0as$ejd$1@sea.gmane.org><009901c552fb$220132e0$0201a8c0@mcuf7>	<d5ier2$hqa$1@sea.gmane.org><mailman.213.1115652248.29826.python-list@python.org><7x8y2oyyhf.fsf@ruckus.brouhaha.com><mailman.234.1115676887.29826.python-list@python.org>	<7xvf5sqa3j.fsf@ruckus.brouhaha.com>	<mailman.314.1115758730.29826.python-list@python.org>
	<5amdnbPrL_uT_BzfRVn-tQ@powergate.ca>
Message-ID: <d5s05s$iaj$1@sea.gmane.org>

Peter Hansen wrote:

> Back to Paul's question then: why use an unreliable and 
> probably-useless-for-all-but-spawning-lengthy-but-educational-threads 
> encryption method when there are relatively reliable and, uh, less 
> discussed and non-edifying, uh... well, you get the picture. ;-)

Well, I'd say ARCFOUR has been discussed a hell of a lot more than what 
this thread ever mustered up. I also submit that implementing ARCFOUR or 
studying p3.py would be a hell of a lot more educational than posting a 
lousy algorithm, calling it unbreakable, and responding to criticisms 
with "I don't understand so you must be wrong."

Education is a process one must engage in. You don't just step in it.

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From Ian.Holsman at cnet.com  Sat May  7 21:29:04 2005
From: Ian.Holsman at cnet.com (Ian Holsman)
Date: Sat, 7 May 2005 18:29:04 -0700
Subject: Out of Office AutoReply: Hello
Message-ID: <676DC304356D354C9690D973CD29AE5C486523@CNET6.cnet.cnwk>

i am currently out of the office until May  23rd.
if the matter is urgent, please contact tech-pma or
my manager Paul Osterhus 
-------------- next part --------------
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From fredrik at pythonware.com  Thu May 12 09:45:14 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 12 May 2005 15:45:14 +0200
Subject: Importing modules
References: <1115816747.292060.292200@o13g2000cwo.googlegroups.com><mailman.380.1115830888.29826.python-list@python.org>
	<1115835958.080135.290900@o13g2000cwo.googlegroups.com>
Message-ID: <d5vm6q$f8h$1@sea.gmane.org>

qwweeeit at yahoo.it wrote:

> So forgive me if I'm in trouble... Instead of mocking me, the better
> should be to give me an brief idea of the import's roll (namespaces,
> visibility and so on...)

if you're interested in learning stuff, why not spend your time reading
up on how things work, rather than bragging about how you won't use
classes, etc, and posting silly assertions.

there are plenty of information on python.org; if you get stuck on some
specific part of it, there are lots of people here than can help you sort
things out.  but if you don't even want to try, all you're doing is wasting
time -- your own, and others.

</F>





From fredrik at pythonware.com  Thu May  5 17:51:11 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 5 May 2005 23:51:11 +0200
Subject: New Python regex Doc (was: Python documentation moronicities)
References: <1113301533.054410.203710@z14g2000cwz.googlegroups.com><mailman.1813.1113355346.1799.python-list@python.org><1113856843.023012.165500@l41g2000cwc.googlegroups.com><1113908069.264676.207090@g14g2000cwa.googlegroups.com>
	<1115328523.852744.110390@f14g2000cwb.googlegroups.com>
Message-ID: <d5e44v$jg6$3@sea.gmane.org>

Xah Lee wrote:

> I have now also started to rewrite the re-syntax page. At first i
> thought that page needs not to be rewritten, since its about regex and
> not really involved with Python. But after another look, that page is
> as incompetent as every other page of Python documentation.
>
> The rewritten page is here:
> http://xahlee.org/perl-python/python_re-write/lib/re-syntax.html
>
> It's not complete

and it no longer describes how things work.  study the inner workings
of the RE engine some more, and try again.

</F>





From gandalf at geochemsource.com  Tue May 17 17:05:46 2005
From: gandalf at geochemsource.com (Laszlo Zsolt Nagy)
Date: Tue, 17 May 2005 23:05:46 +0200
Subject: EpyDoc problem
Message-ID: <428A5CAA.906@geochemsource.com>


  Hello,

I would like to create documentation for my lib using EpyDoc.
I do not see how to report bugs on the EpyDoc home page.
When I try to create documentation, I get this error:

Internal error: Expected a pointer
Unhandled exception in thread started by <function document at 0x00A44C30>

At the end of the traceback:

wx\_misc.py line 3665, in _eq_
    return _misc_.DateTime.__eq__(*args)
TypeError: Expected a pointer

I have no clue what does it mean but I guess it is an EpyDoc bug.
Does anyone ran into the same problem? Any ideas?

-- 
_________________________________________________________________
  Laszlo Nagy		      web: http://designasign.biz
  IT Consultant		      mail: gandalf at geochemsource.com

     		Python forever!




From janeaustine50 at hotmail.com  Mon May 16 19:27:19 2005
From: janeaustine50 at hotmail.com (janeaustine50 at hotmail.com)
Date: 16 May 2005 16:27:19 -0700
Subject: Anyway to designating the encoding of the "source" for compile?
References: <1116087091.856022.155340@z14g2000cwz.googlegroups.com>
	<1116263722.499345.73260@g43g2000cwa.googlegroups.com>
	<sg2i8119lqdrlu0sb6atgrj88cgjrda6f0@4ax.com>
Message-ID: <1116286039.267037.91500@o13g2000cwo.googlegroups.com>

John Machin ??:
> On 16 May 2005 10:15:22 -0700, janeaustine50 at hotmail.com wrote:
>
> >janeaustine50 at hotmail.com wrote:
> >> Python's InteractiveInterpreter uses the built-in compile
function.
> >>
> >> According to the ref. manual, it doesn't seem to concern about the
> >> encoding of the source string.
> >>
> >> When I hand in an unicode object, it is encoded in utf-8
> >automatically.
> >> It can be a problem when I'm building an interactive environment
> >using
> >> "compile", with a different encoding from utf-8.
>
> I don't understand this. Suppose your "different encoding" is cp125x
> (where x is a digit). Would you not do something like this?
>
> compile_input = user_input.decode('cp125x')
> code_object = compile(compile_input, ......
>
>
> >> IDLE itself has the
> >> same problem. ( '<a string with non-ascii-encoding>' is treated
okay
> >> but u'<a string with non-ascii-encoding>' is treated wrong.)
> >>
> >> Any suggestions or any plans in future python versions?
> >
> >I've read a posting from Martin Von Loewis mentioning trying to
build
> >in that feature(optionally marking encoding when calling "compile").
> >Anyone knows how it is going on?
>
> Firstly, it would help those who might be trying to help you if you
> could post a simple example: input, output, what error message, what
> you mean by 'is treated wrong' ... and when it comes to Unicode
> objects (indeed any text), show us repr(text) -- "what you see is
> often not what others see and often not what you've actually got".
>
> Secondly, are any of the contents of PEP 263 of any use to you?
> http://www.python.org/peps/pep-0263.html


Okay, I'll use one of the CJK codecs as the example. EUC-KR is the
default encoding.

>>> import sys;sys.getdefaultencoding()
'euc-kr'
>>> '??'
'\xc7\xd1\xb1\xdb'
>>> u'??'
u'\ud55c\uae00'
>>> s=compile("inside=u'??'",'','single')
>>> exec s
>>> inside #wrong
u'\xc7\xd1\xb1\xdb'
>>> s=compile(u"inside=u'??'",'','single')
>>> exec s
>>> inside #correct
u'\ud55c\uae00'

So I reckon that the "compile" should get a unicode object. However...

C:\Python24\Lib>python code.py
> <string>(1)?()
(Pdb) c
Python 2.4 (#60, Nov 30 2004, 11:49:19) [MSC v.1310 32 bit (Intel)] on
win32
Type "help", "copyright", "credits" or "license" for more information.
(InteractiveConsole)
>>> '??'
'\xc7\xd1\xb1\xdb'
>>> u'??' #wrong.. should be u'\ud55c\uae00' instead
u'\xc7\xd1\xb1\xdb'
>>> import sys;sys.getdefaultencoding()
'euc-kr'
>>> ^Z

Am I right that I assume the problem lies in the code.py(and therefore
in codeop.py)? To correct the problem, I seem to parse each string and
change the literal unicode object... Hmm... Sounds a bad approach.



From dformosa at dformosa.zeta.org.au  Sun May 15 22:22:16 2005
From: dformosa at dformosa.zeta.org.au (David Formosa (aka ? the Platypus))
Date: Mon, 16 May 2005 02:22:16 GMT
Subject: Range function
References: <1115951576.138445.51080@z14g2000cwz.googlegroups.com>
	<1116150638.868535.10690@g14g2000cwa.googlegroups.com>
Message-ID: <slrnd8g0a8.4ns.dformosa@dformosa.zeta.org.au>

On 15 May 2005 02:50:38 -0700, Xah Lee <xah at xahlee.org> wrote:
> Here's the Perl code.

Where did you learn to program?  Its highly unlikely that a Perl
programer would ever write a range function as there is a built in
Perl function that does the same thing.  If your intent is purely
accedemic then the first thing you should do is learn Perl to a much
higher grade.

> #! perl
> 
> # http://xahlee.org/tree/tree.html
> # Xah Lee, 2005-05
> 
> #_____ Range _____ _____ _____ _____
> 
>=pod
> 
> B<Range>

Its considered poor style to have function names with capital
letters.  The normal convention is to use all lower case.

> Range($iMax) generates the list [1, 2, ... , $iMax].
> 
> Range($iMin, $iMax) generates the list [$iMin, ... , $iMax].
> 
> Range($iMin, $iMax, $iStep) uses increment $iStep, with the last
> element in the result being less or equal to $iMax. $iStep cannot be 0.
> If $iStep is negative, then the role of $iMin and $iMax are reversed.
> 
> If Range fails, 0 is returned.
> 
> Example:
> 
>  Range(5); # returns [1,2,3,4,5]
> 
>  Range(5,10); # returns [5,6,7,8,9,10]
> 
>  Range( 5, 7, 0.3); # returns [5, 5.3, 5.6, 5.9, 6.2, 6.5, 6.8]
> 
>  Range( 5, -4, -2); # returns [5,3,1,-1,-3]
> 
>=cut

sub range {

  return [1..$_[0]]     if (@_==1);

  return [$_[0]..$_[1]] if (@_==2);

  my $lowest    = shift;
  my $greatest  = shift;
  my $increment = shift;

  my $steps     = ($greatest - $lowest)/$increment;
  my @return    = map { $_ * $increment + $lowest } (0..$steps);

  return \@return;
}

This does as you wish but it far shorter and I would argue easyer for
the typical perl programer to read.

> sub Range ($;$$) {
> if (scalar @_ == 1) {return _rangeFullArgsWithErrorCheck(1,$_[0],1);};
> if (scalar @_ == 2) {return
> _rangeFullArgsWithErrorCheck($_[0],$_[1],1);};
> if (scalar @_ == 3) {return
> _rangeFullArgsWithErrorCheck($_[0],$_[1],$_[2]);};
>};

I would suggest that If you have the case where your doing a one line
if stament then you should make use of the line modifing verent of
if.  Also since if produces a scalar context its not needed.

sub Range ($;$$) {
  return _rangeFullArgsWithErrorCheck(1,$_[0],1)         if (@_ == 1);
  return _rangeFullArgsWithErrorCheck($_[0],$_[1],1)     if (@_ == 2);
  return _rangeFullArgsWithErrorCheck($_[0],$_[1],$_[2]) if (@_ == 3);
}

See how much neater and more readable the code is after doing that.

> sub _rangeFullArgsWithErrorCheck ($$$) {
> my ($a1, $b1, $dx) = @_;
> 
> if ($dx == 0) {print "Range: increment cannot be zero."; return 0}
> elsif ($a1 == $b1) {return [$a1];}
> elsif ( ((($b1 - $a1) > 0) && ($dx < 0)) || ((($b1 - $a1) < 0) && ($dx
>> 0)) ) {print "Range: bad arguments. You have [$a1,$b1,$dx]"; return
> 0;}
> elsif ((($a1 < $b1) && ($b1 < ($a1 + $dx))) || (($a1 > $b1) && ($b1 >
> ($a1 + $dx)))) {return [$a1];}
> else { return _rangeWithGoodArgs ($a1,$b1,$dx);};
>};

This would be a great place to make use of die.  Throwing an exection for an 
error.

sub _rangeFullArgsWithErrorCheck ($$$) {
  my ($a1, $b1, $dx) = @_;

  die "Range: increment cannot be zero." unless $dx;

  return [$a1] if ($a1 == $b1);

  if ( ((($b1 - $a1) > 0) && ($dx < 0))
        || 
       ((($b1 - $a1) < 0) && ($dx0))) {
    die "Range: bad arguments. You have [$a1,$b1,$dx]";
  }
}


> sub _rangeWithGoodArgs ($$$) {
> my ($a1, $b1, $dx) = @_;
> my @result;
> 
> if ($a1 < $b1) {for (my $i = $a1; $i <= $b1; $i += $dx) { push
> (@result, $i);}; }
> else {for (my $i = $a1; $i >= $b1; $i += $dx) { push (@result, $i);};
>};
> return \@result;
>};

Personally I don't like the c style while loop.  I didn't like it in C
and I don't like it in perl.

-- 
Please excuse my spelling as I suffer from agraphia. See
http://dformosa.zeta.org.au/~dformosa/Spelling.html to find out more.
Free the Memes.


From donald.welch at NOSPAM.hp.com  Thu May 26 14:53:04 2005
From: donald.welch at NOSPAM.hp.com (Don)
Date: Thu, 26 May 2005 11:53:04 -0700
Subject: os independent way of seeing if an executable is on the path?
References: <7e-dnaQeau8AnQvfRVn-1w@comcast.com>
Message-ID: <429564a4@usenet01.boi.hp.com>

Steven Bethard wrote:

> This has probably been answered before, but my Google skills have failed
> me so far...
> 
> Is there an os independent way of checking to see if a particular
> executable is on the path?  Basically what I want to do is run code like:
>      i, o, e = os.popen3(executable_name)
> but I'd like to give an informative error if 'executable_name' doesn't
> refer to an executable on the path.
> 
> The idea is to differentiate between errors generated by not being able
> to run the program, and errors generated while running the program.  The
> former is a probably a configuration error by my user, the second is
> probably a logic error in my code (or perhaps an error on the executable
> I'm calling).
> 
> In Windows, I can read the error file, and get something like:
> "'<program name>' is not recognized as an internal or external
> command,\noperable program or batch file.\n"
> and I'm sure I could parse this, but this seems fragile, and clearly os
> dependent.
> 
> It's not crucial that I use os.popen3 as long as I have access to the
> input, output and error files.  I played around with subprocess for a
> while, but couldn't see any way to do this using that module either.
> 
> Thanks for the help,
> 
> STeVe

I wrote this 'which' function for Linux, but I think if you changed the ':'
character, it would work on Windows (I think its a ';' on Windows, but I
can't remember):

def which( command ):
    path = os.getenv( 'PATH' ).split( ':' )
    found_path = ''
    for p in path:
        try:
            files = os.listdir( p )
        except:
            continue
        else:
            if command in files:
                found_path = p
                break

    return found_path


-Don




From jerf at jerf.org  Mon May  2 21:32:04 2005
From: jerf at jerf.org (Jeremy Bowers)
Date: Mon, 02 May 2005 21:32:04 -0400
Subject: empty lists vs empty generators
References: <509534af.0505021514.5e49aa2@posting.google.com>
Message-ID: <pan.2005.05.03.01.32.03.187701@jerf.org>

On Mon, 02 May 2005 16:14:57 -0700, Brian Roberts wrote:
> Q1: Is there a better or alternate way to handle this? Q2: Is there a way
> that handles both lists and generators, so I don't have to worry about
> which one I've got?

Are you in control of your generators? You could put a method on them that
tells if there is anything in them by manually implementing the .next()
call.

The other thing you could do is a generator wrapper that can tell for you,
but you'll lose some performance:

class EmptyGeneratorDetector(object):
    """Provides a method you can call to detect an empty
    generator. You should probably name this class something
    shorter.

    Check if the generator is empty after construction by looking at
    the isEmpty property."""

    def __init__(self, generator):
        self.generator = generator

        self.isEmpty = False
        self.givenFirst = False
        try:
            self.firstItem = generator.next()
        except StopIteration:
            self.isEmpty = True

    def next(self):
        if self.isEmpty:
            raise StopIteration

        if not self.givenFirst:
            self.givenFirst = True
            return self.firstItem
        else:
            return self.generator.next()

    def __iter__(self):
        return self
    
In action:

Python 2.3.5 (#1, Mar  3 2005, 17:32:12) 
[GCC 3.4.3  (Gentoo Linux 3.4.3, ssp-3.4.3-0, pie-8.7.6.6)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> from genwrap import *
>>> def emptyGenerator():
...     raise StopIteration 
...     yield None
... 
>>> def nonEmptyGenerator():
...     yield 1
...     yield 2
...     yield 3 
... 
>>> e = emptyGenerator()
>>> n = nonEmptyGenerator()
>>> E = EmptyGeneratorDetector(e)
>>> N = EmptyGeneratorDetector(n)
>>> E.isEmpty
True
>>> N.isEmpty
False
>>> for i in E:
...     print i
... 
>>> for i in N: 
...     print i
... 
1
2
3
>>> 

It is tested as much as you see it above :-)

(I recall a lengthy discussion of the best way to create an empty iterator
a while back, and that was not the winner. But it will do for now.)


From steven.bethard at gmail.com  Wed May 18 15:16:55 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Wed, 18 May 2005 13:16:55 -0600
Subject: super() and automatic method combination
In-Reply-To: <mailman.156.1116433473.8733.python-list@python.org>
References: <7xvf5gra9z.fsf_-_@ruckus.brouhaha.com>	<Xns965A94007A1BBduncanbooth@127.0.0.1>	<mailman.147.1116424769.8733.python-list@python.org>	<Xns965A9F2ACC710duncanbooth@127.0.0.1>
	<mailman.156.1116433473.8733.python-list@python.org>
Message-ID: <D_adnZY_HrQ2CRbfRVn-gw@comcast.com>

Laszlo Zsolt Nagy wrote:
> I tested this and I realized that if you change the parameter list in 
> the descendants then it is not wise to use super.
> I'm going to publish the example below, I hope others can learn from it 
> too.
> 
[snip and fixed formatting]
> 
> Example (bad):
> 
> class A(object):
>    def f(self):
>        print "A.f called"
> class B(A):
>    def f(self,what):
>        super(B,self).f()
>        print "B.f called (%s)" % what
> class C(A):
>    def f(self):
>        super(C,self).f()
>        print "C.f called"
> class D(B,C):
>    def f(self):
>        super(D,self).f()
>        print "D.f called"
> 
> d = D()
> d.f()
> 
> Will result in:
> 
> C:/Python24/pythonw.exe -u  "C:/Python/Projects/Test4/test4.py"
> Traceback (most recent call last):
>  File "C:/Python/Projects/Test4/test4.py", line 22, in ?
>    d.f()
>  File "C:/Python/Projects/Test4/test4.py", line 17, in f
>    super(D,self).f()
> TypeError: f() takes exactly 2 arguments (1 given)

Yeah, this problem has been discussed before.  It's a restriction of 
super that the method signature may not change the number of parameters 
in this way in the inheritance hierarchy.

The above is clearly a toy example.  Do you really have a need for B to 
accept a parameter than none of the others accept?  Makes it sounds like 
B.f might be better off as a different method.  If the 'what' parameter 
is necessary for B.f, is it potentially applicable to the other f 
functions?  Could you make 'what' a paramter in the other functions that 
defaults to, say, None?

One other possible (but IMHO somewhat ugly) solution:

py> class A(object):
...     def f(self, *args, **kwargs):
...         print 'A.f'
...
py> class B(A):
...     def f(self, what, *args, **kwargs):
...         super(B, self).f(what, *args, **kwargs)
...         print 'B.f', what
...
py> class C(A):
...     def f(self, *args, **kwargs):
...         super(C, self).f(*args, **kwargs)
...         print 'C.f'
...
py> class D(B, C):
...     def f(self, what, *args, **kwargs):
...         super(D, self).f(what, *args, **kwargs)
...         print 'D.f', what
...
py> d = D()
py> d.f(42)
A.f
C.f
B.f 42
D.f 42
py> d.f(what=13)
A.f
C.f
B.f 13
D.f 13

The problem is that you need to know when you create A that some of the 
methods in the subclasses might change the signature.  Or you need to do 
this to every method, which is kinda nasty.

Definitely take a moment to read Guido's comments on this issue:

http://mail.python.org/pipermail/python-dev/2005-January/050656.html

The main point is that by adding parameters to functions in a subclass, 
you violate the Liskov Substitutability Principle.

STeVe


From Uwe.Lauth at cursor.de  Tue May 10 06:57:38 2005
From: Uwe.Lauth at cursor.de (Uwe Lauth)
Date: Tue, 10 May 2005 12:57:38 +0200
Subject: extra a column from a 2-D array?
In-Reply-To: <mailman.258.1115712581.29826.python-list@python.org>
References: <04ab01c55536$8a24a720$7f00a8c0@scl01.siliconcreation.com>
	<mailman.258.1115712581.29826.python-list@python.org>
Message-ID: <d5q42t$sh5$1@online.de>

Joe Wong wrote:
(original posting not on my nntp server)
>>Hello,
>> 
>> Suppose I have a python array as follow:
>> 
>>    s=[ [1,3,5],
>>        [2,4,6],
>>        [9,8,7]]
>> 
>>what is the quickest way to extract the second colum from all rows? That 
>>is: [3,4,8] in this example.

[a[1] for a in s]

Uwe


From shane at hathawaymix.org  Thu May 26 12:01:16 2005
From: shane at hathawaymix.org (Shane Hathaway)
Date: Thu, 26 May 2005 10:01:16 -0600
Subject: Python analog of Ruby on Rails?
In-Reply-To: <1117073580.063476.125140@g14g2000cwa.googlegroups.com>
References: <mailman.100.1117039885.18027.python-list@python.org>	<4294adc3$0$2526$626a14ce@news.free.fr>	<mailman.107.1117051304.18027.python-list@python.org>
	<1117073580.063476.125140@g14g2000cwa.googlegroups.com>
Message-ID: <4295F2CC.6060307@hathawaymix.org>

George Sakkis wrote:
> "Christopher J. Bottaro" wrote:
> 
> 
>>Cool signature, can anyone do a Python one that I can leech?  =)
>>
>>-- C
>>
> 
> 
> Here's the transliteration in python for your address:
> 
> python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')])
>              for p in 'orattobjc at inmula.sc.saxetu.ude'.split('@')])"

BTW, here's the proper response to that religious thread that keeps
invading this list:

    python -c 'print sum([ord(c) for c in "HOLYBIBLE"])'

I'm Christian and I think it's funny. ;-)  Some background:

    http://scriptures.lds.org/rev/13/16-18#16
    http://www.greaterthings.com/Word-Number/666HolyBible.htm

Shane


From rkern at ucsd.edu  Wed May 11 16:53:14 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Wed, 11 May 2005 13:53:14 -0700
Subject: Python Graphing Utilities.
In-Reply-To: <87mzr17flh.fsf@wilson.rwth-aachen.de>
References: <-dadnS0X7IVccR3fRVn-uQ@entouch.net>	<797fe3d405051010392c00011f@mail.gmail.com>	<mailman.320.1115772826.29826.python-list@python.org>	<87psvycqej.fsf@wilson.rwth-aachen.de>	<mailman.387.1115835071.29826.python-list@python.org>
	<87mzr17flh.fsf@wilson.rwth-aachen.de>
Message-ID: <d5tqth$fae$1@sea.gmane.org>

Torsten Bronger wrote:
> Hall?chen!
> 
> Fernando Perez <fperez.net at gmail.com> writes:

>>I've yet to experiment with it, but it might (with some additional
>>handywork) give final results identical to those of the pslatex
>>backend in gnuplot.
> 
> What do you mean with this?  Do you want to mimic TeX's quality as a
> typesetter, or do you think the goal should be output in real LaTeX
> format (like pslatex does)? 

Both! There is a need for mathematical typesetting in matplotlib without 
a dependency on TeX. Not everyone is making plots destined for inclusion 
in their LaTeX-typeset papers. However, some people, like you and me, 
*are* making such plots and a pslatex-based solution would be a perfect 
fit for that use case.

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From rmm at iname.com  Wed May 11 08:20:28 2005
From: rmm at iname.com (rmm at iname.com)
Date: 11 May 2005 05:20:28 -0700
Subject: Replacing open builtin
Message-ID: <1115814028.259365.98710@g49g2000cwa.googlegroups.com>

If I replace the open builtin eg

import main
__main__.__builtins__.open=None

Is there any way, from here on, to access the original open function??

Extending this slightly, lets say I put a reference to the original
open function inside a class called Isolate and protect this reference
using __getattribute__ and __setattr__.  Is the original function now
isolated and only able to be referenced within Isolate.

In summary, are there any references to builtin functions others than
through __builtins__ and is __getattribute__, __setattr__ secure

Regards

RMM



From skip at pobox.com  Sun May 29 19:05:15 2005
From: skip at pobox.com (Skip Montanaro)
Date: Sun, 29 May 2005 18:05:15 -0500
Subject: cgi.py?
In-Reply-To: <1117400613.000360.223440@f14g2000cwb.googlegroups.com>
References: <1117400613.000360.223440@f14g2000cwb.googlegroups.com>
Message-ID: <17050.19115.763226.444623@montanaro.dyndns.org>


    david> I've looked into cgi.py from 2.4's distribution, and its contents
    david> puzzle me. In parse_header, the first line splits on ';':

    david>     plist = map(lambda x: x.strip(), line.split(';'))

    david> but header parameters may contain semicolon in quoted strings:

    david>    Content-Type: image/jpeg; filename="home:lib;images;face.jpg"

    ...

    david> What am I missing?

Probably nothing.  Can you maybe submit a patch?

Thx,

-- 
Skip Montanaro
skip at pobox.com


From al3xmor3no at gmail.com  Fri May 13 04:00:12 2005
From: al3xmor3no at gmail.com (Alex Moreno)
Date: Fri, 13 May 2005 10:00:12 +0200
Subject: python and printers
Message-ID: <31b57125050513010056cf0d63@mail.gmail.com>

Hi everybody,

i?m writing an applications under wxphython and i need to print some
data in an external printer (usb, parallel, i suppose that it doesn?t
mind. Excuse me for the (maybe) stupid question but, how can i do it?
where can i found information about it?

Thanks a lot,
greetings


From luis_lupe2XXX at netvisaoXXX.pt  Wed May 18 17:30:56 2005
From: luis_lupe2XXX at netvisaoXXX.pt (Luis P. Mendes)
Date: Wed, 18 May 2005 22:30:56 +0100
Subject: speeding up Python script
In-Reply-To: <3evgolF56gtkU3@individual.net>
References: <3evgolF56gtkU3@individual.net>
Message-ID: <3f1qgfF5j0u9U1@individual.net>

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

I appreciate everyone's help!

I got some ideas that I'll try to put into practice.

Regards,

Luis
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.4 (GNU/Linux)
Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org

iD8DBQFCi7QQHn4UHCY8rB8RAkpWAJsGezFRCjDpVvbDiuEN8a2lPY41AgCgm6w4
3hgtkw5NkxZ6GuzC1k2dIYo=
=Epti
-----END PGP SIGNATURE-----


From jmgouzit at gmail.com  Tue May 24 04:02:32 2005
From: jmgouzit at gmail.com (jmgouzit at gmail.com)
Date: 24 May 2005 01:02:32 -0700
Subject: Access lotus notes using Python
In-Reply-To: <ALAke.264$_k2.4238@news2.nokia.com>
References: <lWike.155$NV3.3324@news1.nokia.com>
	<UEjke.447$2u1.383@newssvr19.news.prodigy.com>
	<prk9m2-2gi.ln1@nb2.stroeder.com>
	<Vdrke.1084$uu.291@newssvr33.news.prodigy.com>
	<ALAke.264$_k2.4238@news2.nokia.com>
Message-ID: <1116921752.615735.187040@g47g2000cwa.googlegroups.com>

try this

import win32com.client
session = win32com.client.Dispatch('Lotus.NotesSession')
session.Initialize(r'pppppppp')
db = session.GetDatabase('',r'dddddddd.nsf')
view = db.GetView(r'vvvvvvvv')
doc = view.GetFirstDocument()
print doc.GetFirstItem('iiiiii').Values

domino return string as unicode



From djamal.benslimane at lisi.insa-lyon.fr  Mon May 23 03:34:27 2005
From: djamal.benslimane at lisi.insa-lyon.fr (djamal.benslimane at lisi.insa-lyon.fr)
Date: Mon, 23 May 2005 07:34:27 -0000
Subject: [avast! - INFECTED]   hi
Message-ID: <20050523073427.7C68F1E4003@bag.python.org>

It's the long-awaited film version of the Broadway hit. The  message  sent as  a binary attachment.

-------------- next part --------------


---
avast! Antivirus: message Sortant INFECTE:
\readme.zip#2473510810 (Win32:Lovgate-W [Wrm]) Moved to chest

Base de donnees virale  (VPS): 0520-4, 20/05/2005
Teste le: 05/03/2005 08:34:45
avast! - copyright (c) 1988-2004 ALWIL Software.
http://www.avast.com







From sjmachin at lexicon.net  Fri May 27 08:27:33 2005
From: sjmachin at lexicon.net (John Machin)
Date: Fri, 27 May 2005 22:27:33 +1000
Subject: Strings for a newbie
In-Reply-To: <d773i4$g2p$1@nwrdmz03.dmz.ncs.ea.ibs-infra.bt.com>
References: <d7726f$fdg$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
	<42970d69@news.eftel.com>
	<d773i4$g2p$1@nwrdmz03.dmz.ncs.ea.ibs-infra.bt.com>
Message-ID: <42971235.9000805@lexicon.net>

Malcolm Wooden wrote:
> Sorry John but that don't do it for me. Just get errors comming back
> 
> 
> "John Machin" <sjmachin at lexicon.net> wrote in message 
> news:42970d69 at news.eftel.com...
> 

>>
>>>>>s = "This is a sentence of words"
>>>>>a = s.split()
>>>>>a
>>
>>['This', 'is', 'a', 'sentence', 'of', 'words']
>>

Malcolm,

What errors did you get? Please post a copy of what you see on your 
screen; my palantir is on the fritz :-)

Cheers,
John


From mwm at mired.org  Tue May 10 15:48:36 2005
From: mwm at mired.org (Mike Meyer)
Date: Tue, 10 May 2005 14:48:36 -0500
Subject: Question: Threading and embedding python in an application
References: <2005050919514316807%daha@bestcom>
Message-ID: <861x8erhez.fsf@guru.mired.org>

David Harrison <daha at best.com> writes:

> I am working on an application on Mac OS X that calls out
> to python via PyImport_ImportModule().  I find that if
> the imported module creates and starts a python thread,
> the thread seems to be killed when the import of
> the module is complete.   Is this expected?  Does
> python have to be in control to allow threads to run?

Having an imported module create a thread is a bad idea. For one
thing, the thread won't get created if the module is imported a second
time. While this may be the desired behavior, it can also be
surprising. For another, there are known behaviors in the Python
threading code that can cause deadlocks when you do this. I say
"behaviors" instead of "bugs", because the last time this came up,
there was no indication that anyone was interested in fixing this.

      <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From beliavsky at aol.com  Sat May 21 06:56:24 2005
From: beliavsky at aol.com (beliavsky at aol.com)
Date: 21 May 2005 03:56:24 -0700
Subject: first release of PyPy
References: <mailman.264.1116625088.8733.python-list@python.org>
	<1116629407.638782.145950@g47g2000cwa.googlegroups.com>
	<1116644536.741250.249860@g44g2000cwa.googlegroups.com>
	<mailman.279.1116649250.8733.python-list@python.org>
	<1116653460.808204.74460@g43g2000cwa.googlegroups.com>
	<87mzqpytep.fsf@wilson.rwth-aachen.de>
	<mailman.285.1116663550.8733.python-list@python.org>
Message-ID: <1116672984.452147.244760@g43g2000cwa.googlegroups.com>

Shane Hathaway wrote:

<snip>

> > Please could somebody explain to us non-CS people why PyPy could
> > have speed features CPython can't have?
>
> The idea is to shift more of the responsibility to optimize code from
> the human to the computer.  Since C code is at a low level, the
computer
> can only infer low level intent and thus perform low level
> optimizations.  Humans optimize C by making thousands of
speed-oriented
> decisions directly in the code.  Python code is at a much higher
level,
> which should enable the computer to discover more of the programmer's
> intent and perform deep optimizations.
>
> In the end, the computer's automated optimization could turn out
better
> than a human's manual optimization.  Thus, by expressing the Python
> interpreter in a high level manner, PyPy is a first step toward deep
> optimizations that aren't possible to automate in C.

I am less optimistic but hope I am wrong :).

C++ is a higher level language than C, but it's not clear to me that
compilers are able to optimize C++ code using higher-level features
such as the Standard Library so that they run as fast as the equivalent
C code. OTOH, some C++ experts have advocated template metaprogramming
as a way of speeding up programs. I wonder how widely this technique is
used.

Fortran 95 is a considerably higher level language than Fortran 77, but
I get the impression from comp.lang.fortran that it is harder to
optimize. Fortran compilers compete in a performance-driven market, and
AFAIK they are written in C.



From cam.ac.uk at mh391.invalid  Tue May 31 18:08:40 2005
From: cam.ac.uk at mh391.invalid (Michael Hoffman)
Date: Tue, 31 May 2005 23:08:40 +0100
Subject: something like CPAN, PPMs?
In-Reply-To: <mailman.293.1117551472.18027.python-list@python.org>
References: <mailman.293.1117551472.18027.python-list@python.org>
Message-ID: <d7in8o$esr$1@gemini.csx.cam.ac.uk>

Alex Gittens wrote:
> I'm new to Python from Perl, and loving it. Has there ever been any
> discussion of creating a similar resource as CPAN for Python,

PyPI.
-- 
Michael Hoffman


From phillip.watts at anvilcom.com  Thu May 19 13:56:12 2005
From: phillip.watts at anvilcom.com (phil)
Date: Thu, 19 May 2005 12:56:12 -0500
Subject: Tkinter special math chars
References: <428CAB39.1070109@anvilcom.com>
	<20050519164442.GB18155@unpythonic.net>
Message-ID: <428CD33C.7040502@anvilcom.com>


>         text=u"As the function approaches \N{INFINITY}, \N{HORIZONTAL ELLIPSIS}")

Never mind, works in a Text widget, my bad.

Why is it so slow? (RH Linux, 2.4.20, 1.6Ghz AMD)
3/4 second slower to display widget w/unicode,
even if I encode u'\u221e'

Works though, this is great.



From correiajREMOVECAPS at hotmail.com  Mon May 23 22:24:13 2005
From: correiajREMOVECAPS at hotmail.com (J Correia)
Date: Tue, 24 May 2005 02:24:13 GMT
Subject: Access lotus notes using Python
References: <lWike.155$NV3.3324@news1.nokia.com>
	<UEjke.447$2u1.383@newssvr19.news.prodigy.com>
	<prk9m2-2gi.ln1@nb2.stroeder.com>
	<Vdrke.1084$uu.291@newssvr33.news.prodigy.com>
Message-ID: <hfwke.11863$wr.2282@clgrps12>

> >>The Great 'Sateesh' uttered these words on 5/23/2005 7:14 AM:
> >>>Is it possible to access Lotus notes using Python? Can anyone provide
me
> >>>some pointers?


This might help you get started once you've installed the win32 modules.
 http://tinyurl.com/a9ocy





From danb_83 at yahoo.com  Tue May 10 21:04:07 2005
From: danb_83 at yahoo.com (Dan Bishop)
Date: 10 May 2005 18:04:07 -0700
Subject: Python Args By Reference
References: <1115769308.136143.74080@f14g2000cwb.googlegroups.com>
	<mailman.318.1115769980.29826.python-list@python.org>
Message-ID: <1115773447.041894.56720@g49g2000cwa.googlegroups.com>

Joseph Garvin wrote:
> ncf wrote:
>
> >Hello all, I was wondering if there was any way to pass arguments
> >(integer and such) by reference (address of), rather than by value.
> >
> >Many thanks in advance.
> >
>
> All mutable types in python are passed by reference automatically.

More accurately:

(1) All function arguments are passed by value, but
(2) All "values" are pointers.

Statement (2) also explains why

>>> a = [1, 2, 4]
>>> b = a
>>> b[1] = 0
>>> print a
[1, 0, 4]

behaves the way it does.

And there's no difference between mutable and immutable types.  It's
just that with immutable types, it doesn't matter how they're passed.



From ccurvey at gmail.com  Mon May  9 10:16:50 2005
From: ccurvey at gmail.com (Chris Curvey)
Date: 9 May 2005 07:16:50 -0700
Subject: ANN: Boston Python Interest Group Meeting
Message-ID: <1115648210.564053.325720@f14g2000cwb.googlegroups.com>

Thursday, 7PM

Harvard Science Center
1 Oxford St Room 507
Cambridge, mA 02101

'Nuff said.



From grante at visi.com  Fri May 20 12:48:49 2005
From: grante at visi.com (Grant Edwards)
Date: Fri, 20 May 2005 16:48:49 -0000
Subject: dealing with MAC address
References: <1116603160.795695.99270@f14g2000cwb.googlegroups.com>
Message-ID: <118s57hfv4nocb0@corp.supernews.com>

On 2005-05-20, ashtonn at gmail.com <doodle4 at gmail.com> wrote:

> How do i fill in a command line passed mac address for source mac
> address. The first six bytes of data[i] should contain destination mac
> and the next six bytes of data[i] should contain the source mac
> address.

Use the struct module.

-- 
Grant Edwards                   grante             Yow!  MMM-MM!! So THIS is
                                  at               BIO-NEBULATION!
                               visi.com            


From python at rcn.com  Thu May 26 01:05:25 2005
From: python at rcn.com (Raymond Hettinger)
Date: 25 May 2005 22:05:25 -0700
Subject: evaluated function defaults: stored where?
References: <gsble.1244$m%3.385@trnddc02>
Message-ID: <1117083925.239563.147460@g49g2000cwa.googlegroups.com>

[Alan Isaac]
> Default parameter values are evaluated once when the function definition is
> executed.  Where are they stored?


>>> def f(a, b=10, c=20):
.       pass
>>> f.func_defaults
(10, 20)


> Where is this documented?

http://docs.python.org/ref/types.html#l2h-78



Raymond Hettinger



From news at rob.hooft.net  Sat May 28 16:51:59 2005
From: news at rob.hooft.net (Rob W. W. Hooft)
Date: Sat, 28 May 2005 22:51:59 +0200
Subject: Comparing 2 similar strings?
In-Reply-To: <3k4gm2-9pk.ln1@home.rogerbinns.com>
References: <24a6d$428b9c10$d1b717f8$2300@PRIMUS.CA><428c0d21$1@nntp0.pdx.net>
	<1116487353.934354.195940@g43g2000cwa.googlegroups.com>
	<3k4gm2-9pk.ln1@home.rogerbinns.com>
Message-ID: <4298D9EF.80805@rob.hooft.net>

After reading this thread, I have wrapped up a different approach, 
probably not what you were looking for, but it is very good for what I 
wanted: comparing a command string typed by a user with all possible 
commands a program can accept, to be able to do typo-correction. The 
method will return a floating point number between 0.0 (no match) and 
len(s)+1.0 (if the strings are exactly equal). You can see the score as 
"the number of equal letters".

I put the module at http://starship.python.net/crew/hooft/
It is called comparestrings.py.

It is a comparison algorithm as implemented by Reinhard Schneider and 
Chris Sander for comparison of protein sequences, but implemented to 
compare two ASCII strings.

The comparison makes use of a similarity matrix for letters: in the 
protein case this is normally a chemical functionality similarity, for 
our case this is a matrix based on keys next to each other on a US 
Qwerty keyboard and on "capital letters are similar to their lowercase 
equivalent"

The algorithm does not cut corners: it is sure to find the absolute best 
match between the two strings.

No attempt has been made to make this efficient in time or memory. Time 
taken and memory used is proportional to the product of the lengths of 
the input strings. Use for strings longer than 25 characters is entirely 
for your own risk.

Regards,

Rob Hooft


From mj at zopatista.com  Wed May  4 18:16:50 2005
From: mj at zopatista.com (Martijn Pieters)
Date: Thu, 05 May 2005 00:16:50 +0200
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <d5bgpl$lcb$2@sea.gmane.org>
References: <d4u60o$akh$1@news2.netvision.net.il>	<mailman.47.1114818531.14961.python-list@python.org>	<1114924100.296223.114020@g14g2000cwa.googlegroups.com>	<1114927892.321086.60190@z14g2000cwz.googlegroups.com>	<zX%ce.78213$ft1.5056576@phobos.telenet-ops.be>	<Zj2de.78345$a42.5091422@phobos.telenet-ops.be>	<8764y29x3m.fsf@uwo.ca>	<877jihc7qv.fsf@uwo.ca>
	<4279366B.6070800@zopatista.com> <d5bgpl$lcb$2@sea.gmane.org>
Message-ID: <427949D2.1040705@zopatista.com>

Michael Spencer wrote:
> Same here.  BTW I was unable to open one of the objects created in level 12.  It
> didn't stop me guessing the answer based on the others, but now I wonder whether
> I might need the missing piece for level 13.  Anyone else encounter this?

Nope, that piece is just a truncated version that opens fine otherwise
in Firefox which then gives you the piece that you correctly guessed at;
no hints there.

Martijn Pieters
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From qwejohn at hotmail.com  Mon May 23 05:40:57 2005
From: qwejohn at hotmail.com (qwejohn at hotmail.com)
Date: 23 May 2005 02:40:57 -0700
Subject: what is addMethod ?
Message-ID: <1116841257.937815.61910@g43g2000cwa.googlegroups.com>

Hello,

   I saw some python open source project with many
self.addMethod() functions (with 3 paramters)

What does self.addMethod() is good for ?

 I had looked at documnetation (downloaded and grepped
all the pdf doc files)  and could not find a thing about
it ; nore did googling helped.

Regards,
John



From EBU.Database.IB.Interclient at borland.com  Sun May 15 09:39:59 2005
From: EBU.Database.IB.Interclient at borland.com (EBU.Database. IB.Interclient)
Date: Sun, 15 May 2005 06:39:59 -0700
Subject: Turkish Tabloid Enrages Germany with Nazi Comparisons
Message-ID: <7286E4BA5F422340833389EC05E2E4B95BFD81@USSVS-MAIL02.amer.borl.net>

Thank you for e-mailing interclient at interbase.com. This is an auto
generated message, please do not respond to this mail.
 
Most questions regarding InterClient can be resolved by first visiting
http://support.borland.com/. From this site you can create a free
presales or installation case, find out how to contact Borland developer
support if you have a question about using InterClient, or get
information on posting to Borland's newsgroups - a free dynamic
information source staffed by a set of dedicated volunteers.
 
Other sources of information you may find of use are:
 
http://qualitycentral.borland.com/ - is a Web Services based community
collaboration system for problem reports and feature suggestions.
 
http://codecentral.borland.com/ - is a repository of member submitted
source code, projects, components, models, patterns, and more.
 
http://bdn.borland.com/ - The Borland Developer Network


From lycka at carmen.se  Thu May 19 06:24:42 2005
From: lycka at carmen.se (Magnus Lycka)
Date: Thu, 19 May 2005 12:24:42 +0200
Subject: newbie file/DB processing
In-Reply-To: <1116445969.381550.99280@f14g2000cwb.googlegroups.com>
References: <1116445969.381550.99280@f14g2000cwb.googlegroups.com>
Message-ID: <d6hpha$h0o$1@wake.carmen.se>

len wrote:
> I am an old time
> cobol programmer from the IBM 360/370 eria and this ingrained idea of
> file processing using file definition (FD's) I believe  is causing me
> problems because I think python requires a different way of looking at
> datafiles and I haven't really gotten my brain around it yet. 

Yup, Python uses the same world view as C, C++, Unix etc.

> I would
> like to create a small sequential file, processing at first to store a
> group id, name, amount, and date which I can add to delete from and
> update. Could someone point me to some code that would show me how this
> is done in python.  Eventually, I intend to expand my little program to
> process this file as a flat comma delimited file, move it to some type
> of indexed file and finally to some RDBMS system.  My little program
> started out at about 9 lines of code and is now at about 100 with 5 or
> six functions which I will eventually change to classes (I need to
> learn OOP to but one step at a time).

I think it's much easier to go directly to SQL without those
diversions. In a way, an SQL database maps better to your idea
of files / records, and it just takes much less code and effort
to use SQL than to twist "normal" (for me) files into behaving
like main frame dittos.

I'd suggest that you download pysqlite. Then you have a small
embedded SQL database in your python program and don't need to
bother with a server. See http://initd.org/tracker/pysqlite

Another obvious solution, since you are saying that it's a
small file, is to always read the whole file into memory, and
to rewrite the whole file when you change things.

For info in CSV handling, see http://docs.python.org/lib/module-csv.html

For other non-SQL solutions, please have a look at
http://www-106.ibm.com/developerworks/library/l-pypers.html
and http://docs.python.org/lib/node77.html




From michele.simionato at gmail.com  Thu May 19 11:54:45 2005
From: michele.simionato at gmail.com (Michele Simionato)
Date: 19 May 2005 08:54:45 -0700
Subject: self-promotion of the decorator module
In-Reply-To: <Xns965BAA4238662duncanbooth@127.0.0.1>
References: <1116484694.122678.11980@f14g2000cwb.googlegroups.com>
	<Xns965B6367B75F0duncanbooth@127.0.0.1>
	<1116499905.547537.209500@g49g2000cwa.googlegroups.com>
	<Xns965BAA4238662duncanbooth@127.0.0.1>
Message-ID: <1116518085.669763.285170@o13g2000cwo.googlegroups.com>

Yep, I was wondering about irrelevant things, there is no problem in
this case,
actually.

         Michele Simionato



From rbt at athop1.ath.vt.edu  Fri May 20 22:12:17 2005
From: rbt at athop1.ath.vt.edu (rbt)
Date: Fri, 20 May 2005 22:12:17 -0400
Subject: count files in a directory
Message-ID: <d6m5e1$cr7$1@solaris.cc.vt.edu>

I assume that there's a better way than this to count the files in a 
directory recursively. Is there???

def count_em(valid_path):
     x = 0
     for root, dirs, files in os.walk(valid_path):
         for f in files:
             x = x+1
     print "There are", x, "files in this directory."
     return x

rbt


From __peter__ at web.de  Tue May 17 05:03:10 2005
From: __peter__ at web.de (Peter Otten)
Date: Tue, 17 May 2005 11:03:10 +0200
Subject: trouble with copy/deepcopy
References: <pan.2005.05.16.20.18.16.225798@gmx.net>
	<MSGID_2=3A5025=2F3.131_428946c5@fidonet.org>
Message-ID: <d6cbun$jrb$03$1@news.t-online.com>

Alexander Zatvornitskiy wrote:

> Hmm. I don't find definition of "class variable" in manual. I try to test
> it on such a simple test and find that such variable is NOT shared between
> copies:
> 
> class C:
> q=int()
> 
> c1=C()
> c2=C()
> c1.q=5
> c2.q=10
> print c1.q
> #5
> print c2.q
> #10
> 

Your test is flawed:

>>> class C:
...     q = 0 # class variable
...
>>> c = C()
>>> C.__dict__
{'q': 0, '__module__': '__main__', '__doc__': None}
>>> c.__dict__
{}
>>> c.q
0
>>> c.q = 42 # this is stored in the instance, not the class
>>> c.__dict__
{'q': 42}
>>> C.__dict__
{'q': 0, '__module__': '__main__', '__doc__': None}
>>> c.q
42
>>> del c.q
>>> c.q # because C.q is looked up as a fallback, 0 magically reappears
0

Peter



From sklass at pointcircle.com  Thu May 19 15:20:03 2005
From: sklass at pointcircle.com (rh0dium)
Date: 19 May 2005 12:20:03 -0700
Subject: Convert from numbers to letters
In-Reply-To: <mailman.223.1116529228.8733.python-list@python.org>
References: <1116511005.900715.107260@o13g2000cwo.googlegroups.com>
	<mailman.209.1116513780.8733.python-list@python.org>
	<1116528750.285895.27720@f14g2000cwb.googlegroups.com>
	<mailman.223.1116529228.8733.python-list@python.org>
Message-ID: <1116530403.328825.216120@z14g2000cwz.googlegroups.com>

Python 2.3.5 (#1, Mar 20 2005, 20:38:20)
[GCC 3.3 20030304 (Apple Computer, Inc. build 1809)] on darwin

Traceback (most recent call last):
  File "<stdin>", line 1, in ?
NameError: name 'sorted' is not defined

I think you're probably using 2.4 ??



From jean_seb at videotron.ca  Mon May 16 15:34:42 2005
From: jean_seb at videotron.ca (=?ISO-8859-1?Q?Jean-S=E9bastien_Guay?=)
Date: Mon, 16 May 2005 15:34:42 -0400
Subject: Problem listing services with wmi
Message-ID: <4288F5D2.3020705@videotron.ca>

Hello,

I'm pretty new to Python, though I have a fair bit of experience with 
C/C++, Java, Perl, PHP and others.

I installed Tim Golden's wmi module 
(http://tgolden.sc.sabren.com/python/wmi.html), in the hopes it would 
help me list and work with services on my Win32 machine. Now, everything 
seems fine except for one thing : Listing services!

I tried running a couple of the examples on Tim's more examples page in 
the python shell (for example, List all running processes, Show the 
percentage free space for each fixed disk, Show the IP and MAC addresses 
for IP-enabled network interfaces, etc.) and they worked fine. But when 
I try to run the first example which is on the first page above, I get 
an error. The code is :

import wmi

c = wmi.WMI ()
for s in c.Win32_Service ():
  if s.State == 'Stopped':
    print s.Caption, s.State


and I get :

Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File "G:\Python-2.4\Lib\site-packages\wmi.py", line 404, in __call__
    return self.wmi.query (wql)
  File "G:\Python-2.4\Lib\site-packages\wmi.py", line 583, in query
    raise WMI_EXCEPTIONS.get (hresult, x_wmi (hresult))
wmi.x_wmi: -2147217398

(the exception seems to be thrown on the "for s in..." line)
I have only found one discussion in this newsgroup's archives that seems 
to talk about this problem 
(http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/19fa91ea1a1ff160/0364b7cd22d73483?q=WMI_EXCEPTIONS&rnum=1#0364b7cd22d73483) 
and the fix they suggest there (calling pythoncom.CoInitialize () before 
instantiating the WMI object) doesn't seem to work in this case. In 
other words, this code :

import wmi
import pythoncom

pythoncom.CoInitialize ()
c = wmi.WMI ()
for s in c.Win32_Service ():
  if s.State == 'Stopped':
    print s.Caption, s.State

gives me the same result as above.

Could someone please point me in the right direction to find out what's 
wrong?

Thanks in advance,

J-S

-- 
___________________________________________
Jean-S?bastien Guay   jean_seb at videotron.ca
             http://whitestar02.webhop.org/



From dalke at dalkescientific.com  Mon May 16 09:50:28 2005
From: dalke at dalkescientific.com (Andrew Dalke)
Date: Mon, 16 May 2005 13:50:28 GMT
Subject: question about the id()
References: <mailman.21.1116211710.8733.python-list@python.org>
Message-ID: <pan.2005.05.16.13.50.26.301709@dalkescientific.com>

kyo guan wrote:
> 	Can someone explain why the id() return the same value, and why
> these values are changing? Thanks you.

>>>> a=A()
>>>> id(a.f)
> 11365872
>>>> id(a.g)
> 11365872
>>>>

The Python functions f and g, inside of a class A, are
unbound methods.  When accessed through an instance what's
returned is a bound method.

>>> A.f
<unbound method A.f>
>>> A().f
<bound method A.f of <__main__.A instance at 0x64198>>
>>> 

In your code you do a.f, which creates a new bound method.
After the id() call its ref-count goes to zero and its
memory is freed.  Next you do a.g which creates a new
bound method.  In this case it reuses the same memory location,
which is why you get the same id.

I know Python keeps free lists for some data types.  I
suspect bound method objects are tracked this way because
they are made/destroyed so frequently.  That would increase
the likelihood of you seeing the same id value.


>>>> a.f is a.g
> False

This is the first time you have two bound methods at
the same time.  Previously a bound method was garbage
collected before the next one was created.

>>>> id(a.f), id(a.g), id(b.f), id(b.g)
> (11492408, 11492408, 11492408, 11492408)
>>>> a.f is a.g
> False
>>>> id(a.f), id(a.g), id(b.f), id(b.g)
> (11365872, 11365872, 11365872, 11365872)
>>>>

The memory locations changed.  Here's a conjecture that
fits the facts and is useful to help understand.

Suppose the free list is maintained as a stack, with
the most recently freed object at the top of the stack,
which is the first to be used for the next object.

The "a.f is a.g" creates two bound methods, one at
11492408 and the other at 11365872.  Once the 'is'
is done it dec-refs the two methods, a.f first and
a.g second.  In this case the ref counts go to zero
and the memory moved to the free list.  At this point
the stack looks like

    [11365872, 11492408,  ... rest of stack ... ]

You then do a.f.  This pulls from the top of the
stack so you get 11365872 again.  The id() tells
you that, and then the object gets decrefed and
put back on the stack.


				Andrew
				dalke at dalkescientific.com



From mrmaple at gmail.com  Wed May 25 13:20:27 2005
From: mrmaple at gmail.com (James Carroll)
Date: Wed, 25 May 2005 13:20:27 -0400
Subject: Where do I find the dispatch name?
Message-ID: <b273c74105052510205e0f09f5@mail.gmail.com>

I just ran makepy to create a wrapper for my com object, and it
generated the wrapper with the CLSID.py under
site-packages/win32com/gen_py/

Now, I'm trying to figure out how to invoke it.  How do I figure out
what string to give Dispatch?

For instance:
xl = win32com.client.Dispatch("Excel.Application")

If I understand right would give me an instance of the wrapper....
Do I give it the entire classID?

-Jim


From kbk at shore.net  Tue May  3 00:25:58 2005
From: kbk at shore.net (Kurt B. Kaiser)
Date: Tue, 3 May 2005 00:25:58 -0400 (EDT)
Subject: Weekly Python Patch/Bug Summary
Message-ID: <200505030426.j434PwB1027617@bayview.thirdcreek.com>

Patch / Bug Summary
___________________

Patches :  322 open ( +6) /  2832 closed ( +1) /  3154 total ( +7)
Bugs    :  920 open (+12) /  4952 closed (+11) /  5872 total (+23)
RFE     :  186 open ( +8) /   156 closed ( +3) /   342 total (+11)

New / Reopened Patches
______________________

Info Associated with Merge to AST  (2005-01-07)
       http://python.org/sf/1097671  reopened by  kbk

Minimal cleanup of run.py  (2005-04-26)
       http://python.org/sf/1190163  opened by  Michiel de Hoon

socketmodule.c's recvfrom on OSF/1 4.0  (2005-04-27)
       http://python.org/sf/1191065  opened by  Marcel Martin

Simplify logic in random.py  (2005-04-28)
CLOSED http://python.org/sf/1191489  opened by  Raymond Hettinger

wrong offsets in bpprint()  (2005-04-28)
       http://python.org/sf/1191700  opened by  Pechkinzzz

about shift key  (2005-04-28)
       http://python.org/sf/1191726  opened by  yang

debugger ``condition`` and ``ignore`` exception handling  (2005-04-29)
       http://python.org/sf/1192590  opened by  Jeremy Jones

Use GCC4 ELF symbol visibility  (2005-04-30)
       http://python.org/sf/1192789  opened by  James Henstridge

Patches Closed
______________

type conversion methods and subclasses  (2005-01-25)
       http://python.org/sf/1109424  closed by  bcannon

Don't assume all exceptions are SyntaxError's  (2005-04-24)
       http://python.org/sf/1189210  closed by  bcannon

Automatically build fpectl module from setup.py  (2005-04-19)
       http://python.org/sf/1185529  closed by  mwh

Simplify logic in random.py  (2005-04-28)
       http://python.org/sf/1191489  closed by  rhettinger

New / Reopened Bugs
___________________

[AST] assignment to None allowed  (2005-04-25)
CLOSED http://python.org/sf/1190010  opened by  Brett Cannon

[AST] distinct code objects not created  (2005-04-25)
       http://python.org/sf/1190011  opened by  Brett Cannon

``from sys import stdin,`` doesn't raise a SyntaxError  (2005-04-25)
       http://python.org/sf/1190012  opened by  Brett Cannon

3.29 site is confusing re site-packages on Windows  (2005-04-26)
       http://python.org/sf/1190204  opened by  Kent Johnson

6.9 First sentence is confusing  (2005-04-26)
CLOSED http://python.org/sf/1190451  opened by  Nicolas Grilly

os.waitpid docs don't specify return value for WNOHANG  (2005-04-26)
       http://python.org/sf/1190563  opened by  jls

SimpleHTTPServer sends wrong c-length and locks up client  (2005-04-26)
       http://python.org/sf/1190580  opened by  Alexander Schremmer

calendar._firstweekday is too hard-wired  (2005-04-26)
       http://python.org/sf/1190596  opened by  Tres Seaver

dir() docs show incorrect output  (2005-04-26)
CLOSED http://python.org/sf/1190599  opened by  Martin Chase

bz2 RuntimeError when decompressing file  (2005-04-27)
       http://python.org/sf/1191043  opened by  Chris AtLee

Warning ``error`` filter action is ignored.  (2005-04-27)
CLOSED http://python.org/sf/1191104  opened by  Ivan Vilata i Balaguer

[AST] Failing tests  (2005-04-27)
       http://python.org/sf/1191458  opened by  Brett Cannon

'clear -1' in pdb  (2005-04-29)
       http://python.org/sf/1192315  opened by  Pechkinzzz

doctest's ELLIPSIS and multiline statements  (2005-04-29)
CLOSED http://python.org/sf/1192554  opened by  S?bastien Boisg?rault

docstring error  (2005-04-29)
CLOSED http://python.org/sf/1192777  opened by  Christopher Smith

Notation  (2005-04-30)
       http://python.org/sf/1193001  opened by  Mythril

Python and Turkish Locale  (2005-04-30)
       http://python.org/sf/1193061  opened by  S.?a&#287;lar Onur

Embedded python thread crashes  (2005-04-30)
       http://python.org/sf/1193099  opened by  ugodiggi

Strange os.path.exists() results with invalid chars  (2005-04-30)
       http://python.org/sf/1193180  opened by  Daniele Varrazzo

MACOSX_DEPLOYMENT_TARGET checked incorrectly  (2005-04-30)
       http://python.org/sf/1193190  opened by  Bob Ippolito

os.path.expanduser documentation wrt. empty $HOME  (2005-05-02)
       http://python.org/sf/1193849  opened by  Wummel

calendar.weekheader not found in __all__  (2005-05-03)
       http://python.org/sf/1193890  opened by  George Yoshida

Weakref types documentation bugs  (2005-05-02)
       http://python.org/sf/1193966  opened by  Barry A. Warsaw

bz2.BZ2File doesn't handle modes correctly  (2005-05-02)
       http://python.org/sf/1194181  opened by  Bob Ippolito

Error in section 4.2 of Python Tutorial  (2005-05-03)
       http://python.org/sf/1194209  opened by  Andrina Kelly

Bugs Closed
___________

[ast branch] fatal error when compiling test_bool.py  (2005-03-19)
       http://python.org/sf/1166714  closed by  bcannon

[AST] assert failure on ``eval("u'\Ufffffffe'")``  (2005-04-19)
       http://python.org/sf/1186345  closed by  bcannon

"Atuple containing default argument values ..."  (2005-04-25)
       http://python.org/sf/1189819  closed by  rhettinger

[AST] assignment to None allowed  (2005-04-25)
       http://python.org/sf/1190010  closed by  bcannon

6.9 First sentence is confusing  (2005-04-26)
       http://python.org/sf/1190451  closed by  rhettinger

Python 2.4 Not Recognized by Any Programs  (2005-04-23)
       http://python.org/sf/1188637  closed by  tjreedy

Variable.__init__ uses self.set(), blocking specialization  (2005-04-07)
       http://python.org/sf/1178872  closed by  tjreedy

Compiler generates relative filenames  (2001-04-11)
       http://python.org/sf/415492  closed by  tjreedy

smtplib crashes Windows Kernal.  (2003-06-09)
       http://python.org/sf/751612  closed by  tjreedy

AssertionError from urllib.retrieve / httplib  (2003-06-15)
       http://python.org/sf/755080  closed by  tjreedy

dir() docs show incorrect output  (2005-04-26)
       http://python.org/sf/1190599  closed by  mwh

Warning ``error`` filter action is ignored.  (2005-04-27)
       http://python.org/sf/1191104  closed by  vsajip

doctest's ELLIPSIS and multiline statements  (2005-04-29)
       http://python.org/sf/1192554  closed by  boisgerault

docstring error  (2005-04-29)
       http://python.org/sf/1192777  closed by  bcannon

New / Reopened RFE
__________________

The array module and the buffer interface  (2005-04-25)
       http://python.org/sf/1190033  opened by  Josiah Carlson

logging module '.' behavior  (2005-04-26)
       http://python.org/sf/1190689  opened by  Christopher Dunn

Add 'before' and 'after' methods to Strings  (2005-04-26)
CLOSED http://python.org/sf/1190701  opened by  Christopher Dunn

cStringIO has reset(), but StringIO does not  (2005-04-27)
CLOSED http://python.org/sf/1191420  opened by  Christopher Dunn

logging module root logger name  (2005-04-26)
       http://python.org/sf/1190689  reopened by  cxdunn

slice indices different than integers  (2005-04-28)
CLOSED http://python.org/sf/1191697  opened by  Sebastien de Menten

make slices pickable  (2005-04-28)
       http://python.org/sf/1191699  opened by  Sebastien de Menten

asynchronous Subprocess  (2005-04-28)
       http://python.org/sf/1191964  opened by  Josiah Carlson

"replace" function should accept lists.  (2005-04-17)
       http://python.org/sf/1184678  reopened by  poromenos

'str'.translate(None) => identity translation  (2005-04-30)
       http://python.org/sf/1193128  opened by  Bengt Richter

add server.shutdown() method and daemon arg to SocketServer  (2005-05-02)
       http://python.org/sf/1193577  opened by  paul rubin

Expat Parser to supply document locator in incremental parse  (2005-05-02)
       http://python.org/sf/1193610  opened by  GaryD

RFE Closed
__________

Add 'before' and 'after' methods to Strings  (2005-04-26)
       http://python.org/sf/1190701  closed by  rhettinger

cStringIO has reset(), but StringIO does not  (2005-04-27)
       http://python.org/sf/1191420  closed by  rhettinger

logging module root logger name  (2005-04-27)
       http://python.org/sf/1190689  closed by  vsajip

logging module documentation  (2003-01-16)
       http://python.org/sf/668905  closed by  vsajip

slice indices different than integers  (2005-04-28)
       http://python.org/sf/1191697  closed by  mwh



From mfranklin1 at gatwick.westerngeco.slb.com  Fri May 20 09:10:33 2005
From: mfranklin1 at gatwick.westerngeco.slb.com (Martin Franklin)
Date: Fri, 20 May 2005 14:10:33 +0100
Subject: Cascading menus with Tk
In-Reply-To: <uaGdnWyAsaM1KhDfRVn-sw@comcast.com>
References: <uaGdnWyAsaM1KhDfRVn-sw@comcast.com>
Message-ID: <d6knic$rg6$1@sea.gmane.org>

michelle wrote:
> Hi all,
> 
> I am new to Tk, or Python GUI programming and I seem to be stuck.  I
> have looked about for help with Tk GUIs, but everything seems so terse
> or incomplete?? I have been mostly using the "Introduction to Tkinter"
> by Fredrik Lundh
> (http://www.pythonware.com/library/tkinter/introduction/index.htm)
> 
> What I am trying to do is add cascading menus to a Tk menu widget like:
> 
> File
> New...
> ---> Router
> ---> Firewall
> Open
> ----
> Exit
> 
> This seems simple enough, but I can't get it to work...the two
> "add_cascade" methods (shown below), if used, run an endless loop that
> is difficult to break:
> 
> mainWindow = Tk()
> mainWindow.title("myApp")
> 
> # create a menu
> menubar = Menu(mainWindow)
> mainWindow.config(menu=menubar)
> 
> filemenu = Menu(menubar)
> menubar.add_cascade(label="File", menu=filemenu)
> filemenu.add_command(label="New...")

I think you want these two options to be in a cascading menu like so:

newmenu = Menu(filemenu)
filemenu.add_cascade(label="New...", menu=newmenu)

newmenu.add_command(label="Router")
newmenu.add_command(label="Firewall")



> filemenu.add_cascade(label="Router")
> filemenu.add_cascade(label="Firewall")
> filemenu.add_command(label="Open...", command = openFileDialog)
> filemenu.add_separator()
> filemenu.add_command(label="Exit", command = mainWindow.destroy)
> 
> helpmenu = Menu(menubar)
> menubar.add_cascade(label="Help", menu=helpmenu)
> helpmenu.add_command(label="Online Help")
> helpmenu.add_command(label="Help on the web")
> helpmenu.add_separator()
> helpmenu.add_command(label="About...", command = openAboutBox)
> 
> Any ideas??
> 
> Miki

Martin



From lbates at syscononline.com  Fri May 13 09:38:06 2005
From: lbates at syscononline.com (Larry Bates)
Date: Fri, 13 May 2005 08:38:06 -0500
Subject: String formatting strangeness
In-Reply-To: <1115990147.880532.61730@o13g2000cwo.googlegroups.com>
References: <1115990147.880532.61730@o13g2000cwo.googlegroups.com>
Message-ID: <oZSdnfA3L6UMMBnfRVn-vg@comcast.com>

The argument to string format expression needs to be a tuple not a list.

Also, all the string escaping makes this very hard to read.  You can
mix single and double quotes to achieve:

print '\t\t\t<section number="%i" title="%s" length="%i:%i"/>\n' % \
      (number, name, seconds // 60, seconds % 60)

which IMHO is much easier to read.

Larry Bates

dark.ryder at gmail.com wrote:
> I must be doing something wrong, but for the life of me, I can't figure
> out what.  Here's the code snippet which is giving me grief:
> 
> print type(number), type(name), type(seconds // 60), type(seconds % 60)
> print "\t\t\t<section number=\"%i\" title=\"%s\" length=\"%i:%i\"/>\n"
> % [number, name, seconds // 60, seconds % 60]
> 
> (These are lines 49 and 50 of the script; I can post the whole thing if
> someone wants, but I think this is enough to see why it's driving me
> nuts.)
> 
> And the output:
> 
> <type 'int'> <type 'str'> <type 'int'> <type 'int'>
> Traceback (most recent call last):
>   File "X:\Music (FLAC)\Post-process new rips.py", line 50, in ?
>     print "\t\t\t<section number=\"%i\" title=\"%s\"
> length=\"%i:%i\"/>\n" % [number, name, seconds // 60, seconds % 60]
> TypeError: int argument required
> 
> Wait, what?  The first line clearly identifies that the the first,
> third, and fourth elements are all integers, yet the error says that
> *lack* of integers is the problem.  If I change all "%i"s to "%d", I
> get the same problem, and changing to "%s" (hey, it was worth a shot)
> gives "TypeError: not enough arguments for format string" instead.
> Huh?  I see four placeholders and a four-element tuple.
> 
> Can anyone enlighten me here?
> 


From sxanth at ceid.upatras.gr  Tue May 10 05:25:54 2005
From: sxanth at ceid.upatras.gr (Stelios Xanthakis)
Date: Tue, 10 May 2005 12:25:54 +0300
Subject: pyvm -- faster python
In-Reply-To: <1115561483.741761.212140@f14g2000cwb.googlegroups.com>
References: <mailman.164.1115548611.29826.python-list@python.org>
	<1115561483.741761.212140@f14g2000cwb.googlegroups.com>
Message-ID: <42807E22.5050100@ceid.upatras.gr>

Kay Schluehr wrote:
> 
> could You tell us a bit more about Your motivation to create an
> alternative C-Python interpreter? There is AFAIK no such ambitious
> project that has ever survived. The last one I remember died shortly
> after it was born:
> 

The motivation is that I just needed some bytecode engine. I deciced
to go with python bytecode, because well, IMO it's the best!
Eventually it turned out what it is.

I'm afraid this may end up dead before unborn too.
So it depends what people want. If nobody cares, I just learned python
the hard way and the project does to the abandonware cemetary.


Stelios





From me at privacy.net  Tue May 17 19:14:33 2005
From: me at privacy.net (Dan Sommers)
Date: 17 May 2005 19:14:33 -0400
Subject: question about the id()
References: <87hdh3vxaa.fsf@hector.domek>
	<eobie.102028$IN.1728201@twister2.libero.it>
	<87hdh29icd.fsf@hector.domek>
Message-ID: <m2ekc55tt2.fsf@unique.fully.qualified.domain.name.yeah.right>

On Tue, 17 May 2005 13:56:18 +0200,
Peter Dembinski <pdemb at gazeta.pl> wrote:

> "Giovanni Bajo" <noway at sorry.com> writes:
>> Peter Dembinski wrote:
>> 
>>>> BTW, a typical performance optimization (not done automatically by
>>>> python) is to hoist unchanging-value expressions out of loops, and
>>>> obj.method is often such an expression, so you will this strategy
>>>> when people try
>>>> to squeeze extra performance from their programs.
>>> 
>>> Good to know.  Is there any advanced optimizer for Python code,
>>> which would do such things for me (or suggest them, like pychecker
>>> does for readability)?
>> 
>> 
>> Prove that a.f() would not change the meaning of "a.f" after its
>> invokation is close to impossible.

> Many things in Python programs cannot be proved.  But what about
> suggesting optimisations, not doing them automatically?  

At that point, you can do the optimization yourself:

    class A:
        def method( self ):
            pass

    a = A( )
    m = a.method # optimize runtime lookups for a.method
    for x in range( 10 ):
        m( )

Regards,
Dan

-- 
Dan Sommers
<http://www.tombstonezero.net/dan/>


From bulliver at badcomputer.org  Mon May  2 13:47:03 2005
From: bulliver at badcomputer.org (darren kirby)
Date: Mon, 2 May 2005 10:47:03 -0700
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <xkvhis21ohyx.fsf@cisco.com>
References: <d4u60o$akh$1@news2.netvision.net.il>
	<mailman.22.1115040588.6583.python-list@python.org>
	<xkvhis21ohyx.fsf@cisco.com>
Message-ID: <200505021047.08527.bulliver@badcomputer.org>

quoth the Ganesan Rajagopal:
> I am stuck on level 3. I've tried every re that I can think of. Some body
> give me a clue.
>
> Ganesan
>
> --
> Ganesan Rajagopal

>>> t = /text of page source.../
>>> re.findall('[a-z][A-Z]{3}[a-z]{1}[A-Z]{3}[a-z]', t)

You should get ten results. Consider all ten together to get your solution...

-d
-- 
darren kirby :: Part of the problem since 1976 :: http://badcomputer.org
"...the number of UNIX installations has grown to 10, with more expected..."
- Dennis Ritchie and Ken Thompson, June 1972
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From fredrik at pythonware.com  Sat May 14 02:57:43 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Sat, 14 May 2005 08:57:43 +0200
Subject: Faster GUI text control
References: <A_udnVpGA43xjBjfRVn-iQ@comcast.com>
Message-ID: <d647h8$lkc$1@sea.gmane.org>

"none "@bag.python.org" wrote:
> several people mention that is was a known issue with Tkinter.
>   I'm trying to decide what is the best replacement for the control.  I
> was originally planning on redoing the GUI with wxpython, but I've seen
> people indicate I would have the same problem.  I also was looking at
> Fredrik Lundh's widget construction kit info.  That looks like it could
> be useful, but it would still require building a new control

no, it would mean writing some python code.  if all you need is a scrolling
text list, you can simply use the code on this page:

    http://effbot.org/zone/wck-4.htm

(see "A scrollable list view, with scrollbar support" and, optionally,
the virtual data modifications under "Displaying Huge Data Sets")

the resulting widget will update at constant speed, independent of the
data size.

</F>





From flyaflya at gmail.com  Thu May 26 07:53:38 2005
From: flyaflya at gmail.com (flyaflya)
Date: Thu, 26 May 2005 19:53:38 +0800
Subject: how to convert string to list or tuple
Message-ID: <d74dbl$h91$1@news.yaako.com>

a = "(1,2,3)"
I want convert a to tuple:(1,2,3),but tuple(a) return ('(', '1', ',', 
'2', ',', '3', ')') not (1,2,3)


From phillip.watts at anvilcom.com  Wed May 18 21:23:57 2005
From: phillip.watts at anvilcom.com (phil)
Date: Wed, 18 May 2005 20:23:57 -0500
Subject: iso_8859_1 mystery/tkinter
References: <mailman.154.1116432329.8733.python-list@python.org>
	<mailman.158.1116437716.8733.python-list@python.org>
	<d6g499$d5s$2@news4.zwoll1.ov.home.nl>
	<428BBAEA.4070806@anvilcom.com>
	<20050518230200.GB9427@unpythonic.net>
Message-ID: <428BEAAD.8020601@anvilcom.com>

Thanks.
My confusion was man 3 printf  u is unsigned.
But of course that would be after %.
Never paid any attention to unicode,
but will now.


I'll figure out on my own why Tkinter and
WinXP console treated differently or used different
codepage.  Thanks.

Jeff Epler wrote:

> this isn't about the "sign bit", it's about assumed encodings for byte
> strings..
> 
> In iso_8859_1 and unicode, the character with value 0xb0 is DEGREE SIGN.
> In other character sets, that may not be true---For instance, in the
> Windows "code page 437", it is u'\u2591' aka LIGHT SHADE (a half-tone pattern).
> 
> When you write code like
>     x = '%c' % (0xb0)
> and then pass x to a Tkinter call, Tkinter treats it as a string encoded
> in some system-default encoding, which could give DEGREE SIGN, could
> give LIGHT SHADE, or could give other characters (a thai user of Windows
> might see THAI CHARACTER THO THAN, for instance, and I would see a
> question mark because I use utf-8 and this is an invalid byte sequence).
> 
> By using
>     x = u'%c' % (0xb0)
> you get a unicode string, and there is no confusion about the meaning of
> the symbol---you always get DEGREE SIGN.
> 
> Jeff
> 





From maxm at mxm.dk  Thu May 19 05:23:48 2005
From: maxm at mxm.dk (Max M)
Date: Thu, 19 May 2005 11:23:48 +0200
Subject: Markov chain with extras?
In-Reply-To: <1116442387.496825.224140@g49g2000cwa.googlegroups.com>
References: <1116278880.976106.191780@o13g2000cwo.googlegroups.com>
	<1116283144.051195.193370@g44g2000cwa.googlegroups.com>
	<1116333014.950383.310040@g44g2000cwa.googlegroups.com>
	<428a49bb$0$31079$626a14ce@news.free.fr>
	<1116442387.496825.224140@g49g2000cwa.googlegroups.com>
Message-ID: <428c5aec$0$306$edfadb0f@dread12.news.tele.dk>

temp at mclift.fsnet.co.uk wrote:
> I want to use it for music. So given list 1 (melody), list 2 (chords)
> could be generated by a Markov chain. Also, given the chords the melody
> could be generated again by a chain.


I have this small module, that can be used for markov chains.


-- 

hilsen/regards Max M, Denmark

http://www.mxm.dk/
IT's Mad Science
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From steve at holdenweb.com  Mon May 16 09:01:08 2005
From: steve at holdenweb.com (Steve Holden)
Date: Mon, 16 May 2005 09:01:08 -0400
Subject: 20050111: list basics
In-Reply-To: <20050516123327.GA21016@mrna.tn.nic.in>
References: <slrnd8g0vv.4ns.dformosa@dformosa.zeta.org.au>
	<20050516123327.GA21016@mrna.tn.nic.in>
Message-ID: <d6a5hm$55f$2@sea.gmane.org>

km wrote:
> Hi all, 
> 
> 
>>Perl's pack function will allow you to do direct memory access if you
>>ask it to via the "p" and "P" templates.
> 
> 
>  can we do direct memory accessing in python also ? 
> 
> regards,
> KM

Not, I'm happy to say, without a C extension class to allow it.

regards
  STEVE
-- 
Steve Holden        +1 703 861 4237  +1 800 494 3119
Holden Web LLC             http://www.holdenweb.com/
Python Web Programming  http://pydish.holdenweb.com/



From steven.bethard at gmail.com  Thu May  5 14:24:23 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Thu, 05 May 2005 12:24:23 -0600
Subject: How to detect a double's significant digits
In-Reply-To: <1115317222.685180.62020@z14g2000cwz.googlegroups.com>
References: <1115314620.902071.323410@f14g2000cwb.googlegroups.com>
	<mailman.53.1115315497.29826.python-list@python.org>
	<1115315863.050413.275390@g14g2000cwa.googlegroups.com>
	<s6ydnVxK45ow_-ffRVn-qQ@comcast.com>
	<1115317222.685180.62020@z14g2000cwz.googlegroups.com>
Message-ID: <iZ-dnQ4kqqRK-effRVn-2Q@comcast.com>

mrstephengross wrote:
> Well, the numbers are in fact stored as numbers, so string processing
> won't work.

What kind of numbers?  Python floats?

STeVe


From bellman at lysator.liu.se  Tue May 10 20:08:55 2005
From: bellman at lysator.liu.se (Thomas Bellman)
Date: Wed, 11 May 2005 00:08:55 +0000 (UTC)
Subject: Trouble saving unicode text to file
References: <1115500976.571232.76100@z14g2000cwz.googlegroups.com>
	<ameq71lt3ohe3o85fsh4m456qgrnj82dfk@4ax.com>
	<d5ppl3$pto$1@news.island.liu.se>
	<a03281t2i1qngf2rnkgsdsq8nvou46nq00@4ax.com>
Message-ID: <d5rien$c7i$1@news.island.liu.se>

John Machin <sjmachin at lexicon.net> wrote:

> UTF-32 is yet another encoding.
[...]
> Once you have done codecs.open('inputfile', 'rb', 'utf_32') or
> receivedstring.decode('utf_32'), what do you care whether your
> *external representation* has fixed-width characters or not?

> Putting it another way, any advantage of fixed-width characters is to
> be found in *internal* storage, not *external* transmission or
> storage. 

> At the other end, if you don't have to squeeze your data through an
> 8-bit-wide non-binary channel, and you have no need for legibility to
> humans, then the remaining considerations are efficiency and (if you
> have no control over what's used at the other end) whether the
> necessary codec is widely implemented. 

So, are you saying that any encoding that handles all the needed
characters are equally good choices?  So why not choose UTF-7?
Or Punycode?

Should you never care what the black box you are using looks like
on the inside?  Hadn't it mattered if X.400 won over SMTP?  Both
protocols are somewhat capable of sending emails after all; X.400
is just a bit more complicated on the inside where normal users
don't see.


Fixed-with characters *do* have advantages, even in the external
representation.  With fixed-with characters you don't have to
parse the entire file or stream in order to read the Nth character;
instead you can skip or seek to an octet position that can be
calculated directly from N.

In-place editing of single characters in large files becomes more
efficient.

The codec for UTF-32 is extremely simple.  There are no illegal
sequences to care about, like there are in UTF-8 and UTF-16, just
illegal single 32-bit values (those that are larger than 0x10ffff).

And not the least, UTF-32 is *beautiful* compared to UTF-16.


-- 
Thomas Bellman,   Lysator Computer Club,   Link?ping University,  Sweden
"Adde parvum parvo magnus acervus erit"       ! bellman @ lysator.liu.se
          (From The Mythical Man-Month)       ! Make Love -- Nicht Wahr!


From kent37 at tds.net  Fri May  6 15:36:07 2005
From: kent37 at tds.net (Kent Johnson)
Date: Fri, 06 May 2005 15:36:07 -0400
Subject: min max of a list
In-Reply-To: <1115406819.884785.52080@o13g2000cwo.googlegroups.com>
References: <1115245476.036508.273930@g14g2000cwa.googlegroups.com>
	<427bac26$1_3@newspeer2.tds.net>
	<1115406819.884785.52080@o13g2000cwo.googlegroups.com>
Message-ID: <427bc292$1_2@newspeer2.tds.net>

querypk at gmail.com wrote:
> Hi Kent,
> Thanks for that. But We are considering [..., 0, 101, 0, 0, 0, 0, 0] ->
> [13,18] .In fact if you look at the list, the histogram ends at 15 that
> is [0,101,0] --> [13,15]. Dont you think so.
> 

Well you consider ..., 0,   4,   9,   2,   0,   0, ... as an interval [2, 7] in your example. How is 
that different from ..., 0, 101, 0, 0, 0, 0, 0 ?

Kent


From mahs at telcopartners.com  Thu May  5 01:25:25 2005
From: mahs at telcopartners.com (Michael Spencer)
Date: Wed, 04 May 2005 22:25:25 -0700
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <1115268997.066368.208690@o13g2000cwo.googlegroups.com>
References: <d4u60o$akh$1@news2.netvision.net.il>	<mailman.47.1114818531.14961.python-list@python.org>	<1114924100.296223.114020@g14g2000cwa.googlegroups.com>	<1114927892.321086.60190@z14g2000cwz.googlegroups.com>	<zX%ce.78213$ft1.5056576@phobos.telenet-ops.be>	<Zj2de.78345$a42.5091422@phobos.telenet-ops.be>	<8764y29x3m.fsf@uwo.ca>
	<877jihc7qv.fsf@uwo.ca>	<4279366B.6070800@zopatista.com>	<mailman.24.1115246239.29826.python-list@python.org>
	<1115268997.066368.208690@o13g2000cwo.googlegroups.com>
Message-ID: <d5cabi$lqa$1@sea.gmane.org>

Dan Bishop wrote:
> Martijn Pieters wrote:
> 
>>Martijn Pieters wrote:
>>
>>>I haven't figured this one out yet either. Rather frustrating
> 
> really.
> 
>>>All the hints I've been given so far is to remember the solution
> 
> for
> 
>>>level 12.
>>
>>Awwww, that was devious! I found it finally, how evil that was! I
> 
> really
> 
>>fell for it too, until I paid more attention to that error message.
> 
> Got
> 
>>it finally. *woot*
> 
> 
> You mean there's a hint in that XML-RPC fault?
> 

No - the hint is associated with another error message




From philippe at philippecmartin.com  Sat May  7 11:54:29 2005
From: philippe at philippecmartin.com (Philippe C. Martin)
Date: Sat, 07 May 2005 15:54:29 GMT
Subject: Ask for a tools to protect my .pyc file :)
References: <mailman.143.1115476079.29826.python-list@python.org>
	<1115477104.218282.154990@g14g2000cwa.googlegroups.com>
Message-ID: <Uw5fe.1839$7U.287@newssvr30.news.prodigy.com>

Is it stable ? I tried it a few months ago and it crashed on my code .... I
do not code that badly ;-)

Regards,

Philippe



utabintarbo at gmail.com wrote:

> pyobfuscate
> 
> http://www.lysator.liu.se/~astrand/projects/pyobfuscate/



From willitfw at gmail.com  Thu May  5 16:16:40 2005
From: willitfw at gmail.com (willitfw)
Date: 5 May 2005 13:16:40 -0700
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <mailman.62.1115321749.29826.python-list@python.org>
References: <d4u60o$akh$1@news2.netvision.net.il>
	<1115320072.101049.319650@o13g2000cwo.googlegroups.com>
	<mailman.62.1115321749.29826.python-list@python.org>
Message-ID: <1115324200.230325.89010@f14g2000cwb.googlegroups.com>

yes, I have done that.  i'll keep working on it.
thanks



From steve at holdenweb.com  Tue May 31 09:57:47 2005
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 31 May 2005 09:57:47 -0400
Subject: write to the same file from multiple processes at the same time?
In-Reply-To: <roy-75EA44.09273827052005@reader1.panix.com>
References: <e3617$429713d7$3eb01f24$9096@news.flashnewsgroups.com>	<roy-29C1D4.09142527052005@reader1.panix.com>	<XOqdnU5dNq_vgwrfRVn-rg@powergate.ca>
	<roy-75EA44.09273827052005@reader1.panix.com>
Message-ID: <429C6D5B.9000000@holdenweb.com>

Roy Smith wrote:
> Peter Hansen <peter at engcorp.com> wrote:
> 
>>The OP was probably on the right track when he suggested that things 
>>like SQLite (conveniently wrapped with PySQLite) had already solved this 
>>problem.
> 
> 
> Perhaps, but a relational database seems like a pretty heavy-weight 
> solution for a log file.

Excel seems like a pretty heavyweight solution for most of the 
applications it's used for, too. Most people are interested in solving a 
problem and moving on, and while this may lead to bloatware it can also 
lead to the inclusion of functionality that can be hugely useful in 
other areas of the application.

regards
  Steve
-- 
Steve Holden        +1 703 861 4237  +1 800 494 3119
Holden Web LLC             http://www.holdenweb.com/
Python Web Programming  http://pydish.holdenweb.com/



From dan at dontspammecauseidontlikit.com  Wed May  4 03:37:25 2005
From: dan at dontspammecauseidontlikit.com (Dan)
Date: Wed, 04 May 2005 15:37:25 +0800
Subject: Creating Files
Message-ID: <esug71lo1nd3773rk71l7rtus35tm4mfcu@4ax.com>



I know how to open a system file with Python, but is there some way to
create one if it's not there?

Dan


From hugonz at gmail.com  Wed May 11 15:21:11 2005
From: hugonz at gmail.com (hugonz at gmail.com)
Date: 11 May 2005 12:21:11 -0700
Subject: Python Documentation (should be better?)
In-Reply-To: <mailman.389.1115837608.29826.python-list@python.org>
References: <mailman.389.1115837608.29826.python-list@python.org>
Message-ID: <1115839271.271071.32710@z14g2000cwz.googlegroups.com>

I think Python's doc really rock. It's odd, why do you refer to the
tutorial when the lib API is what I'd consider "the docs".

If you're using Windows, then the doc browser included is pretty good
too...



From http  Tue May 17 03:53:38 2005
From: http (Paul Rubin)
Date: 17 May 2005 00:53:38 -0700
Subject: Windows distribution suggestions?
References: <7x3bsmfjdg.fsf_-_@ruckus.brouhaha.com>
	<d6c6e6$mlf$1@news01.versatel.de>
Message-ID: <7xekc6p9tp.fsf@ruckus.brouhaha.com>

Bernhard Holzmayer <Holzmayer.Bernhard at deadspam.com> writes:
> I can feel your unhappiness, and I share it. Hi Paul!
> Here are some hints...

Thanks!  ;-)

> Since your installer needs to run before Python is installed, you need
> something else. Go to http://www.wisesolutions.com
> You'll find a Windows installer program, with a demo-version (30days
> license). Try this, it would be my best recommendation.

Hmm, ok, it looks like the paid version is around 500 USD.  Since this
is a Windows thing I'm ok in principle with using a payware packaging
app, but that's a bit on the expensive side.  I'll see what the
customer says but I think they might resist.

> You'll have to test your application on Windows, in any case. 
> I've built lots of applications which run in both worlds (Linux/Windows).
> Usually this works, but occasionally you'll have to deal with strange
> things. One is, if you use ODBC. There's good chance that you'll have to
> deal with access restrictions in the %SYSTEM% directory, unless you require
> an administrator's account for your application.

The app works ok under Windows now.  I don't use ODBC.  I might need
some database connectivity later and will probably use MySQL.  I don't
want to need an admin account.  Right now the app just has a Tkinter
gui, reads and writes a few files and talks to some sockets.  I might
need to add some C extensions later but those should be pretty portable.

> If you test your app on a Windows machine, you can easily install
> Python 2.3 and Python 2.4 on the same machine without
> conflicts. Just try out, if your app works with either. If it works
> with both, why not use 2.3?

I guess I could do that.  I believe I make some minor use of 2.4 features
but I can probably retrofit those things.

> > There's also py2exe--is that as good? 
> Depends on your application, if that is acceptable. 
> I have no experiences with that.

Me neither.  I was hoping to find out its good and bad points as compared
with alternatives.

> Who are your customer's (the recipients of your program releases)?
> Usually, you cannot rely that they have online access to your repository.
> Then, they are potentionally interested in security issues and/or stability
> of the program. I'd not like a program which is said to require frequent
> updates - I'd guess that there's not much quality inside...

The program is under active development and sprouting new features 
every few minutes.  The idea is to release a new development build once
a week or so, for internal use by the customer.

> If your application has a GUI, a menu entry might fetch your update files
> and place them wherever they must reside. your update.py might feed that
> menu entry. Quite easy. 

Hmm, that's another thing I'd have to code--maybe it's feasible.  I'll
think about it.

> If you have command line apps, why not provide an additional update.py 
> and then, if you provide updates, just install them using your installed
> update.py. The only thing: How do you keep track of path/desktop/file
> information and how do you deal with user rights etc.?
> Are you aware of how this is done under WindowsXP? It's quite different from
> older Windows platforms! Therefore it might be easier, to leave this to
> professional installation tools.

No I'm really ignorant about Windows.  I just put the app's files in
C:/Program Files/appname because that's what one of the other developers
said to do.

> > I do have Visual C++ installed on the development machine, if that helps.
> 
> Isn't Visual C++ still coming with a restricted version of InstallShield?
> If so, check if you can use that. It might give your release a sort of
> professional shine...

Hmm, that's really really interesting.  How would I find out?  

> You'll certainly find out, that managing the registry/desktop file system
> will cost most energy, if you want to release your apps to WindowsXP.
> Once Python is running your apps, the rest is peanuts.

Oh man, I was hoping to avoid that level of hassle.  My app doesn't
use any registry keys of its own, but I guess the Python executable
does, and that stuff presumably has to be updated with every
reinstall, and something is sure to eventually go wrong and corrupt
the registry, if this is anything like the Windows that I'm used to
hearing about.  Sigh.  Just how bad is that under Windows XP?  
I'm used to Windows 95 completely falling apart at the slightest
error but I have the impression that XP is a bit more solid.

Maybe I'll have to just tell them to install Python 2.4 from its
distro MSI and then I can put together a distutils setup.py thingie
which they'd run separately.  That might be acceptable to the customer
if it saves a lot of development effort and prevents user hassles when
things go wrong.  It would sure be nice to have one of those slick
one-click installers though.


From newsgroups at jhrothjr.com  Sun May 29 13:13:39 2005
From: newsgroups at jhrothjr.com (John Roth)
Date: Sun, 29 May 2005 11:13:39 -0600
Subject: how to convert string to list or tuple
References: <d74dbl$h91$1@news.yaako.com>
	<mailman.131.1117109560.18027.python-list@python.org>
	<1117383768.099922.308760@o13g2000cwo.googlegroups.com>
	<Xns9665B54CBAA38duncanbooth@127.0.0.1>
Message-ID: <119ju27nhqdlm78@news.supernews.com>


"Duncan Booth" <duncan.booth at invalid.invalid> wrote in message 
news:Xns9665B54CBAA38duncanbooth at 127.0.0.1...
> Dan Bishop wrote:
>
>> Simon Brunning wrote:
>>> [...]
>>
>> Or if you do use eval, don't give it access to any names.
>>
>>> [...]
>> os.system("rm -rf *")
>> Traceback (most recent call last):
>>   File "<stdin>", line 1, in ?
>>   File "<string>", line 0, in ?
>> NameError: name 'os' is not defined
>>
> Have you tried giving it the string '__import__("os").system("rm -rf *")'?
> [Don't try that at home children!]
>
> Even if you take steps to avoid that working by hiding the builtins, there
> are still too many ways to do nasty things with eval for it ever to be
> safe.

There was a posting here Nov 5, 2003 by Huaiyu Zhu at IBM Almaden
that shows how to do eval type stuff safely. The basic notion is to use the
compiler and then check the ast to see if the result fits the straitjacket 
you
want to put it into. Pass / Fail; trying to fix it up if it's "close" is 
usually a
real bad idea.

He gives an example, and there's a much more extensive set of working
code in the taBase.py module of PyFit that handles lists, tuples and
dicts which contain arbitrary literals including complex and arbitrarily 
nested
lists, tuples and dicts.

------- code snippet starts here --------

    def _safeEval(self, s):
        """
        Evaluate strings that only contain the following structures:
        const,  tuple,  list,   dict
        Taken from c.l.py newsgroup posting Nov 5, 2003 by Huaiyu Zhu at IBM 
Almaden
        """
        #print "in _safeEval. input: '%s'" % s
        node1 = compiler.parse(s)

        # !!! special case of attempting to compile a lone string
        if node1.doc is not None and len(node1.node.nodes) == 0:
            #print "in _safeEval. string: '%s' found as docstring" % 
node1.doc
            return node1.doc

        #print "in _safeEval. nodes: '%s'" % (node1,)
        stmts = node1.node.nodes
        assert len(stmts) == 1
        node = compiler.parse(s).node.nodes[0]
        assert node.__class__ == compiler.ast.Discard
        nodes = node.getChildNodes()
        assert len(nodes) == 1
        result = self._safeAssemble(nodes[0])
        #print "in _safeEval result: '%s'" % (result,)
        return result

    seq_types = {
        compiler.ast.Tuple: tuple,
        compiler.ast.List: list,
        }
    map_types = {
        compiler.ast.Dict: dict,
        }

    oper_types = {
        compiler.ast.Add: operator.add,
        compiler.ast.Sub: operator.sub,
        }

    builtin_consts = {
        "True": True,
        "False": False,
        "None": None,
        }

    def _safeAssemble(self, node):
        """ Recursively assemble parsed ast node """
        cls = node.__class__
        if cls == compiler.ast.Const:
            return node.value
        elif cls in self.seq_types:
            nodes = node.nodes
            args = map(self._safeAssemble, nodes)
            return self.seq_types[cls](args)
        elif cls in self.map_types:
            keys, values = zip(*node.items)
            keys = map(self._safeAssemble, keys)
            values = map(self._safeAssemble, values)
            return self.map_types[cls](zip(keys, values))
        elif cls in self.oper_types:
            left = self._safeAssemble(node.left)
            right = self._safeAssemble(node.right)
            if type(left) == type(1.0j) or type(right) == type(1.0j):
                return self.oper_types[cls](left, right)
            else:
                raise FitException, ("Parse001",)
        elif cls == compiler.ast.Name:
            result = self.builtin_consts.get(node.name, "?")
            if result != "?":
                return result
            else:
                raise FitException, ("Parse002", node.name)
        else:
            raise FitException, ("Parse003", cls)

------- end of code snippet -----------

John Roth


> 



From merman at o2online.de  Sat May 28 16:26:39 2005
From: merman at o2online.de (TK)
Date: Sat, 28 May 2005 22:26:39 +0200
Subject: __call__
In-Reply-To: <4298d0c9$0$6738$626a14ce@news.free.fr>
References: <42987f9a$0$26432$9b622d9e@news.freenet.de>
	<1117293143.679768.286600@g43g2000cwa.googlegroups.com>
	<4298ce99$0$176$9b622d9e@news.freenet.de>
	<4298d0c9$0$6738$626a14ce@news.free.fr>
Message-ID: <4298d43f$0$196$9b622d9e@news.freenet.de>

tiissa wrote:
> TK wrote:
> 
>> Sorry but it does not work.
> 
> 
> It _does_ work. It just don't do what you expect.

Seems so;-).

Thanks a lot for help!!!

o-o

Thomas


From pecoraREMOVE at THISanvil.nrl.navy.mil  Tue May 17 14:14:59 2005
From: pecoraREMOVE at THISanvil.nrl.navy.mil (Lou Pecora)
Date: Tue, 17 May 2005 14:14:59 -0400
Subject: OSx 10.4 lacks pythonIDE?
References: <2005051303214075249%baza@NOSPAMthemauvezoneorguk>
	<mailman.508.1115951783.29826.python-list@python.org>
	<BEAAA2F4.473%baza41@gmail.com>
	<mailman.45.1116006655.29328.python-list@python.org>
Message-ID: <pecoraREMOVE-2C5776.14145917052005@ra.nrl.navy.mil>

In article <mailman.45.1116006655.29328.python-list at python.org>,
 Robert Kern <rkern at ucsd.edu> wrote:

> You could learn to use vim or emacs, both of which come with Tiger. They 
> also have somewhat more Aqua-friendly GUI versions lurking around. I'm 
> partial to vim, myself.
> 
> PyOXIDE might be a good choice for you.
> http://homepage.mac.com/gandreas/Menu4.html
> 
> I'm told Xcode does a tolerable job with Python.
> 
> There are other IDEs floating around. Searching the PythonMac-SIG 
> mailing list archives should show you past discussions about them and 
> how well they work on OS X.

TextWrangler or BBEdit (it's bigger brother) can be used, too.  Both are 
nice GUI editors.

-- Lou Pecora  (my views are my own) REMOVE THIS to email me.


From steven.bethard at gmail.com  Sun May  8 18:21:57 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Sun, 08 May 2005 16:21:57 -0600
Subject: How to implement multiple constructors
In-Reply-To: <1115588999.677872.174250@z14g2000cwz.googlegroups.com>
References: <1115588999.677872.174250@z14g2000cwz.googlegroups.com>
Message-ID: <Ct2dnd_6peaZDOPfRVn-vQ@comcast.com>

tron.thomas at verizon.net wrote:
> I am a C++ developer with only a little experience using Python.  I
> want to create a Python class where by I can construct an instance from
> that class based on one of two different object types.
> 
> For example, if I were programming in C++, I would do the something
> like the following:
> 
> class MyClass
> {
> public:
> 	MyClass(const SomeType& type);
> 	MyClass(const SomeOtherType& type);
> ...
> };

How about using a classmethod as an alternate constructor:

py> class C(object):
...     def __init__(self, i):
...         self.i = i
...     @classmethod
...     def fromstr(cls, s):
...         return cls(int(s))
...
py> C(1).i
1
py> C.fromstr('2').i
2

STeVe


From pclinch at gmail.com  Thu May 19 06:18:30 2005
From: pclinch at gmail.com (paulC)
Date: 19 May 2005 03:18:30 -0700
Subject: What's the difference between str and 'hello' ?
In-Reply-To: <ffa7ec1b.0505190127.122b51a8@posting.google.com>
References: <ffa7ec1b.0505190127.122b51a8@posting.google.com>
Message-ID: <1116497910.296984.68450@z14g2000cwz.googlegroups.com>


hong Yu wrote:
> I am new to python.
> I was confused:
>
> >>> a = list('hello')
>
> >>> a
> ['h', 'e', 'l', 'l', 'o']
>
> I want to combine the items in the list into a string.
> So:
>
> >>> ''.join(a)
> 'hello'
>
> but:
>
> >>> str.join(a)
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
> TypeError: descriptor 'join' requires a 'str' object but received a
'list'
>
> So why TypeError raised?
> and
> What's the difference between str and 'hello' ?
>
> Thanks a lot.


str is a class, 'hello' is instance of the class; the method join
expects to receive an instance as its first parameter so:-

>>> str.join( '', a )
'hello'

Regards, Paul



From jepler at unpythonic.net  Thu May 19 14:39:21 2005
From: jepler at unpythonic.net (Jeff Epler)
Date: Thu, 19 May 2005 13:39:21 -0500
Subject: Tkinter special math chars
In-Reply-To: <428CD33C.7040502@anvilcom.com>
References: <428CAB39.1070109@anvilcom.com>
	<20050519164442.GB18155@unpythonic.net>
	<428CD33C.7040502@anvilcom.com>
Message-ID: <20050519183921.GC18155@unpythonic.net>

On Thu, May 19, 2005 at 12:56:12PM -0500, phil wrote:
> Why is it so slow? (RH Linux, 2.4.20, 1.6Ghz AMD)
> 3/4 second slower to display widget w/unicode,
> even if I encode u'\u221e'

u'\u221e' vs u'\N{INFINITY}' should make no noticible run-time
difference--they both specify exactly the same string, and the decoding
takes place at the time the script or module is byte-compiled.

What Tk does at runtime is inspect a large number of fonts until it
finds one with the desired character---or all the fonts, if the
character doesn't exist.  Querying all the fonts on your
system can take quite a bit of time.  I believe that Tk caches this
information until program exit, or at least as long as the font is in
use, and characters that are nearby in their unicode values will be
resolved at the same time.

I'm not aware of a good explanation of the low-level font handling in
Tk; The information in the above paragraph was gleaned by reading the
source code (tkUnixFont.c and tkWinFont.c).

Jeff
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From TechAlerts at gmail.com  Mon May 30 12:45:57 2005
From: TechAlerts at gmail.com (Kanthi Kiran Narisetti)
Date: 30 May 2005 09:45:57 -0700
Subject: Python Exercises for Newbee
Message-ID: <1117471557.619636.232000@g44g2000cwa.googlegroups.com>

Hi ALL,

I am Windows Administrator, moving little ahead from batch files and
scripts I started learning Python. I found that Python is very easy and
is very well documented. Still I am looking more than examples. As a
beginner i want to do lot of excersice from simple addition to complex
...which help me to understand the concepets more clearly.

I appreciate if any one can give me such exersices or any link for the
same.


Thank You ,
Kanthi Kiran



From adsheehan at eircom.net  Thu May  5 12:01:22 2005
From: adsheehan at eircom.net (adsheehan at eircom.net)
Date: 5 May 2005 09:01:22 -0700
Subject: SWIG and Python incompatibilities?
In-Reply-To: <mailman.47.1115303977.29826.python-list@python.org>
References: <1115302774.850678.317130@g14g2000cwa.googlegroups.com>
	<mailman.47.1115303977.29826.python-list@python.org>
Message-ID: <1115308882.421635.319020@o13g2000cwo.googlegroups.com>

Thanks Steve! appreciate the response.



From news at NOwillmcguganSPAM.com  Wed May 18 05:02:11 2005
From: news at NOwillmcguganSPAM.com (Will McGugan)
Date: Wed, 18 May 2005 10:02:11 +0100
Subject: Reading image dimensions with PIL
In-Reply-To: <mailman.106.1116345120.8733.python-list@python.org>
References: <428a0f5c$0$13769$db0fefd9@news.zen.co.uk>
	<mailman.106.1116345120.8733.python-list@python.org>
Message-ID: <428b0494$0$24130$da0feed9@news.zen.co.uk>

Dave Brueck wrote:

> 
> 
> If you're tossing images that are too _small_, is there any benefit to 
> not downloading the whole image, checking it, and then throwing it away?

Its a 'webscraper' app that downloads images based on search criteria. 
The user may want only images above 640x480, although the general case 
will be something like 200x200 to avoid downloading thumbnails

> 
> Checking just the first 1K probably won't save you too much time unless 
> you're over a modem. Are you using a byte-range HTTP request to pull 
> down the images or just a normal GET (via e.g. urllib)? If you're not 
> using a byte-range request, then all of the data is already on its way 
> so maybe you could go ahead and get it all.

I'm not familiar with byte-range requests. Is this a standard feature of 
webservers? I know there will be more that one K in the pipeline if I do 
a read, but if I close the file object from urllib it will stop the 
download if there is data remaining - wont it?

> 
> But hey, if your current approach works... :) It _is_ a bit 
> unconventional, so to reduce the risk you could test it on a decent mix 
> of image types (normal JPEG, progressive JPEG, normal & progressive GIF, 
> png, etc.) - just to make sure  PIL is able to handle partial data for 
> all different types you might encounter.
> 
> Also, if PIL can't handle the partial data, can you reliably detect that 
> scenario? If so, you could detect that case and use the 
> download-it-all-and-check approach as a failsafe.

The PIL code worked with most of the images I threw at it (just jpegs), 
if there was no 'size' attribute then I just continue to download the 
entire image. It may have caused a memory leak though, with this code in 
  memory usage increased continuously..

Actualy, this may all be moot now. Originally I looked at reading the 
image dimensions from the jpeg header, but that turned out to be 
non-trivial and I gave up. Fortunately I found some Perl code that does 
it, and converted it to Python (and I dont even know Perl!). Here's the 
code if anyone is interested..

import struct


def GetJpegSize(data):

     idata = iter(data)

     width = None
     height = None

     try:

         B1 = ord(idata.next())
         B2 = ord(idata.next())

         if B1 != 0xFF or B2 != 0xD8:
             return -1, -1

         while True:

             byte = ord(idata.next())

             while byte != 0xFF:
                 byte = ord(idata.next())

             while byte == 0xFF:
                 byte = ord(idata.next())

             if byte >= 0xc0 and byte <= 0xc3:
                 idata.next()
                 idata.next()
                 idata.next()
                 height, width = struct.unpack( '>HH', 
"".join(idata.next() for b in range(4)) )
                 break
             else:
                 offset = struct.unpack('>H', idata.next() + 
idata.next())[0] - 2
                 for _ in xrange(offset):
                     idata.next()

     except StopIteration:
         pass

     return width, height


if __name__ == "__main__":

     first_k = file("test.jpg","rb").read(1024)

     print GetJpegSize(first_k)


Returns (-1, -1) for a non-jpeg, or (None, None) if the size wasn't 
contained in the data supplied (some jpegs have embedded thumbnails), or 
(width, height) if the dimensions were found.

And the original source: http://wiki.tcl.tk/757


Thanks,

Will


-- 
http://www.willmcgugan.com
"".join( [ {'*':'@','^':'.'}.get(c,None) or chr(97+(ord(c)-84)%26) for c 
in "jvyy*jvyyzpthtna^pbz" ] )


From Alexander_Zatvornitskiy at p131.f3.n5025.z2.fidonet.org  Mon May 16 17:11:37 2005
From: Alexander_Zatvornitskiy at p131.f3.n5025.z2.fidonet.org (Alexander)
Date: Tue, 17 May 2005 01:11:37 +0400
Subject: trouble with copy/deepcopy
References: <pan.2005.05.16.20.18.16.225798@gmx.net>
Message-ID: <MSGID_2=3A5025=2F3.131_428946c5@fidonet.org>

?????? Marc!

16 ??? 2005 ? 22:18, Marc 'BlackJack' Rintsch ? ????? ?????? ? All ?????:

 MR> That clears only one dictionary at class level.  Which is visible on
 MR> both instances.

 MR> class Distribution:
 MR>     def __init__(self):
 MR>         self.__gr_on_transp = dict()
 MR>         self.__ostatok_m = dict()
 MR>     ...

 MR> This creates *instance variables* which should be deepcopied
 MR> without problems.
Hmm. I don't find definition of "class variable" in manual. I try to test it on
such a simple test and find that such variable is NOT shared between copies:

class C:
  q=int()

c1=C()
c2=C()
c1.q=5
c2.q=10
print c1.q
#5
print c2.q
#10

After deepcopy of c1 or c2, all classes have own copy of q. After replacing
integer q on dictionary, results are the same. There is an error?

Alexander, zatv at bk.ru


From __peter__ at web.de  Mon May  2 17:32:16 2005
From: __peter__ at web.de (Peter Otten)
Date: Mon, 02 May 2005 23:32:16 +0200
Subject: sys.stdout question
References: <1114985939.702426.114490@f14g2000cwb.googlegroups.com>
	<mailman.1.1114987901.6583.python-list@python.org>
	<1115067029.782290.62730@g14g2000cwa.googlegroups.com>
Message-ID: <d5667s$en4$01$8@news.t-online.com>

chris patton wrote:

> I tried adding the comma at the end
> print 'hello',
> It still added that extra character.

http://mail.python.org/pipermail/python-list/2003-September/184181.html

Peter

-- 
In diesen Kreisen kreiselt sich der Kreisler



From aahz at pythoncraft.com  Wed May 11 12:24:00 2005
From: aahz at pythoncraft.com (Aahz)
Date: 11 May 2005 09:24:00 -0700
Subject: Solipsis: Python-powered Metaverse
References: <d5qqo7$3dc$1@sea.gmane.org>
	<mailman.323.1115778422.29826.python-list@python.org>
	<du7u0lacnam.fsf@mozart.cc.tut.fi>
	<mailman.370.1115824344.29826.python-list@python.org>
Message-ID: <d5tbj0$erb$1@panix1.panix.com>

In article <mailman.370.1115824344.29826.python-list at python.org>,
Paul McNett  <p at ulmcnett.com> wrote:
>Ville Vainio wrote:
>>
>> FWIW, In Finland all home *DSL and Cable internet connections (that I
>> know of) are connected "directly" to the internet (in the sense that
>> all ports are open). Blocking is reserved for the modem, just the way
>> it should be...
>
>Sure, that's how it is here in the US too. 
>
>  [...]
>
>[1] Although, some ISP's are taking it upon themselves to drop or reject 
>port 25 traffic. A wrong but understandable stopgap solution to the 
>problem of peoples toy machines getting infected by malware - at least 
>those machines won't be able to send mailbombs anywhere else.

I've heard of other kinds of port-blocking, too, making it difficult or
impossible to set up VPNs, for example.
-- 
Aahz (aahz at pythoncraft.com)           <*>         http://www.pythoncraft.com/

"And if that makes me an elitist...I couldn't be happier."  --JMS


From jello at comics.com  Tue May 24 15:57:33 2005
From: jello at comics.com (rzed)
Date: Tue, 24 May 2005 15:57:33 -0400
Subject: PIL and line drawing
References: <Xns965C7A2E1E0A4jreeder@63.223.7.253>
	<mailman.65.1116954531.18027.python-list@python.org>
Message-ID: <Xns9660A285DC3FBjreeder@63.223.7.253>

"Fredrik Lundh" <fredrik at pythonware.com> wrote in
news:mailman.65.1116954531.18027.python-list at python.org: 

> "rzed" <jello at comics.com> wrote:
> 
>> > if you have 1.1.5, you can use the width option to control
>> > the line width. see:
>>
>> I'm glad to see that addition. I was surprised to see that
>> 'width' is actually doubled in the resulting line, though. I
>> suppose the code adds and subtracts the specified width from
>> the specified coordinate point(?).
> 
> hmm.  that sure sounds a lot like a bug I though I had fixed.
> 
Ah, I see that I was using   VERSION = "1.1.5b1" which I have now
upgraded to 1.1.5. Retesting ... nope, same thing. Specifying a
width of 10, I get a line of width 20. ImageDraw shows: 

# $Id: ImageDraw.py 2134 2004-10-06 08:55:20Z fredrik $

-- 
rzed


From mj at zopatista.com  Thu May  5 15:20:18 2005
From: mj at zopatista.com (Martijn Pieters)
Date: Thu, 05 May 2005 21:20:18 +0200
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <1115320072.101049.319650@o13g2000cwo.googlegroups.com>
References: <d4u60o$akh$1@news2.netvision.net.il>
	<1115320072.101049.319650@o13g2000cwo.googlegroups.com>
Message-ID: <d5dr95$hpu$1@sea.gmane.org>

willitfw wrote:
> any help on level 4 would be appreciated.  i've looked at the hints,
> but isn't obvious

It isn't meant to be too obvious.. If you're expecting obvious
solutions, you won't like the rest of the challenge. ;)

What have you tried? Have you studied the source of the page, tried the
link, seen what you get back from that link and then adjusted the URL
according to what you got back? From there on out, just follow the
chain, the linked list.

Martijn Pieters
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From Tommy.Ryding at gmail.com  Tue May 17 02:58:56 2005
From: Tommy.Ryding at gmail.com (Tommy Ryding)
Date: 16 May 2005 23:58:56 -0700
Subject: Embed Python
Message-ID: <ea7fb926.0505162258.5e97c2da@posting.google.com>

Hi,

Background:
Im currently working on my own Python port for VxWorks this is part of
my master thesis. What I want to do is to only to embed the
interpreter and not the compiler. Both to save memory on the target
device and to be get some security in the device. It is a mission
critical device im applying it to.


Question:
Is there any obvious way to see what files that are needed for the
interpreter and which files that are needed by the compiler?

//Tommy


From plusk at radford.edu  Thu May 19 08:18:22 2005
From: plusk at radford.edu (Paul D. Lusk)
Date: Thu, 19 May 2005 12:18:22 +0000 (UTC)
Subject: import cx_Oracle fails!
References: <1116454404.355741.51730@f14g2000cwb.googlegroups.com>
Message-ID: <Xns965B54A448BF1pluskradfordedu@80.91.229.5>

"Daniel" <danricofer at gmail.com> wrote in 
news:1116454404.355741.51730 at f14g2000cwb.googlegroups.com:

> Hello from Brazil :-)
> 
> I'm trying to bring cx_Oracle alive on my Python 2.4.1 @ HP-UX 11
> (suckz) and Oracle 10.1.0 64bits without success
> 
> I've already tryied the suggestions from Bernard Delm?e and Martin v.
> L?wis (topic "Python 2.3b1 + cx_oracle 3.0 on HP-UX"), but it didn't
> work, even when I recompiled Python with the "-lc -lpthread" options.
> The result was:
> 
>>>> import cx_Oracle
> /usr/lib/dld.sl: Can't shl_load() a library containing Thread Local
> Storage: /usr/lib/libcl.2
> /usr/lib/dld.sl: Exec format error
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
> ImportError: Failed to load
> /usr/local/lib/python2.4/site-packages/cx_Oracle.sl
>>>> 
> 
> Any other suggestion?
> 
> Thank you all in advance!
> 

I got similar errors when first trying to use DCOracle2 on HPUX.

The solution that worked here is: 

         ./configure --with-libs='-lcl'

Try that, if you haven't already.

-- 
Paul





From skip at pobox.com  Mon May  2 10:04:31 2005
From: skip at pobox.com (Skip Montanaro)
Date: Mon, 2 May 2005 09:04:31 -0500
Subject: Tripoli: a Python-based triplespace implementation
In-Reply-To: <f278b21305050202544b4bd11d@mail.gmail.com>
References: <mailman.9.1114999502.6582.python-list@python.org>
	<f278b21305050202544b4bd11d@mail.gmail.com>
Message-ID: <17014.13167.231933.56821@montanaro.dyndns.org>


    Dominic> Tripoli will eventually support RDF/XML as a format for
    Dominic> importing and exporting triples.

Is there some interoperability requirement with non-Python apps?  If not,
why not just use pickle or marshal?

Slo[


From a-steinhoff at web.de  Fri May 13 06:19:07 2005
From: a-steinhoff at web.de (Armin Steinhoff)
Date: Fri, 13 May 2005 12:19:07 +0200
Subject: pyvm -- faster python
In-Reply-To: <mailman.441.1115886157.29826.python-list@python.org>
References: <mailman.164.1115548611.29826.python-list@python.org>	<1115561483.741761.212140@f14g2000cwb.googlegroups.com>	<m102l2-9qr.ln1@home.rogerbinns.com>	<mailman.264.1115716603.29826.python-list@python.org>	<vu38l2-k5v.ln1@home.rogerbinns.com>	<7xvf5qbir1.fsf@ruckus.brouhaha.com>	<nt98l2-1e.ln1@home.rogerbinns.com>	<7xpsvymlse.fsf@ruckus.brouhaha.com>	<1115791624.856252.247890@z14g2000cwz.googlegroups.com>	<7x1x8el18e.fsf@ruckus.brouhaha.com>	<1115876410.813839.222080@g43g2000cwa.googlegroups.com>
	<mailman.441.1115886157.29826.python-list@python.org>
Message-ID: <d61sha$7qe$05$1@news.t-online.com>

Stelios Xanthakis wrote:
> Kay Schluehr wrote:
> 
>>
>> Yes. What we are seeking for and this may be the meaning of Armins
>> intentiously provocative statement about the speed of running HLLs is a
>> successor of the C-language and not just another VM interpreter that is
>> written in C and limits all efforts to extend it in a flexible and
>> OO-manner. Python is just the most promising dynamic OO-language to
>> follow this target.
> 
> 
> Bytecode engine is the best method for dynamic code execution
> ("exec", eval, etc).  A low level OOP language would be very suitable
> for a python VM.
> 
> pyvm has that. A big part of it is written in "lightweight C++" [1].

Realy ?  I have downloaded the lwc distribution and checked it out.
It was a surprise that none of the examples are working.
I'm using SuSE 9.0 with  gcc 3.3.1 ...

Is there a working version of lwc ???

Regards

   Armin




> That makes it less portable as the lwc preprocessor is using GNU-C
> extensions.  However, it's the same extensions also used by the linux
> kernel and AFAIK the intel compiler supports them too.
> 
> So probably the bigger "competitor" of pyvm is boost-python.
> And that's one reason the release of the source is stalled until it
> gets better.
> 
> 
> Stelios
> 
> [1] http://students.ceid.upatras.gr/~sxanth/lwc/


From hancock at anansispaceworks.com  Tue May 17 18:38:30 2005
From: hancock at anansispaceworks.com (Terry Hancock)
Date: Tue, 17 May 2005 17:38:30 -0500
Subject: Representing ambiguity in datetime?
Message-ID: <200505171738.30123.hancock@anansispaceworks.com>

What do you do when a date or time is
incompletely specified?  ISTM, that as it is, there is no
formal way to store this --- you have to guess, and there's
no way to indicate that the guess is different from solid
information.  As a result, I have sometimes had to abandon
datetime, even though it seemed like the logical choice for
representing data.

E.g. I might have information like "this paper was published
in May 1997".  There's no way to write that with datetime,
is there?  Even if I just use the "date" object instead of 
datetime, I still have to actually specify something like 
May 1, 1997 --- fabricating data, which is frequently
undesireable (later on, I might find information saying that
it was actually published May 23, 1997 and I might want
to update the earlier one, or simply evaluate them as 
"equal" since they are, to within the precision given --- 
for example, I might be trying to decide that two database
entries are really duplicate references to the same paper).

I know that this is somewhat theoretically stated, but I 
have run into to concrete problems along the lines of
the above.

I'd say this is analogous to how you might use "None"
rather than "0" to represent an integer if you don't know
it's value (rather than knowing that it is zero).  ISTM, you
ought to be able to specify a date as, e.g.:

d = datetime.date(2005, 5, None)

I realize there might be some complexity with deciding
how to handle datestamp math, but as this situation
occurs frequently in real life, it seems like it shouldn't
be avoided.

How do other people deal with this kind of problem?

Cheers,
Terry

--
Terry Hancock ( hancock at anansispaceworks.com )
Anansi Spaceworks  http://www.anansispaceworks.com



From klaus at seistrup.dk  Tue May  3 11:28:51 2005
From: klaus at seistrup.dk (Klaus Alexander Seistrup)
Date: Tue, 3 May 2005 15:28:51 +0000 (UTC)
Subject: Python & SQLite
References: <d57g8v$n4c$1@sunce.iskon.hr>
	<mailman.86.1115114086.6583.python-list@python.org>
	<1115131256.058058.139980@o13g2000cwo.googlegroups.com>
Message-ID: <slrnd7f65j.rti.klaus@main.szn.dk>

dcrespo wrote:

> Does PySQLite run on Linux?

There are specific python modules for SQLite on Linux.

-- 
Klaus Alexander Seistrup
Magnetic Ink, Copenhagen, Denmark
http://magnetic-ink.dk/


From steven.bethard at gmail.com  Thu May 12 00:39:30 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Wed, 11 May 2005 22:39:30 -0600
Subject: optparse
In-Reply-To: <pan.2005.05.12.00.14.50.561551@dalkescientific.com>
References: <1115841250.764632.296820@g47g2000cwa.googlegroups.com>
	<sPKdnV13ANzA9B_fRVn-iQ@comcast.com>
	<1115843600.174250.16770@f14g2000cwb.googlegroups.com>
	<w7ednaqywpQj8h_fRVn-3Q@comcast.com>
	<pan.2005.05.12.00.14.50.561551@dalkescientific.com>
Message-ID: <-72dnQdzreyfQx_fRVn-gw@comcast.com>

Andrew Dalke wrote:
> Steven Bethard wrote:
> 
>>Well one reason might be that it's easy to convert from an object's 
>>attributes to a dict, while it's hard to go the other direction:
> 
>   ...
> 
>>py> options['x'], options['y']
>>('spam', 42)
>>py> o = ??? # convert to object???
>>...
>>py> o.x, o.y
>>('spam', 42)
> 
> "hard" == "slightly less easy"?

No, sorry, "hard" -> "harder".  Typo.  For simple cases like this, it's 
obviously not difficult, though it does take more work than the opposite 
direction.

If you didn't catch the old discussions about some of the details, I 
think they're under something like "generic objects" or "namespace 
objects".  You can check the archives if you're interested.

STeVe


From bokr at oz.net  Fri May 13 17:03:04 2005
From: bokr at oz.net (Bengt Richter)
Date: Fri, 13 May 2005 21:03:04 GMT
Subject: How to find the classname of an object? (was Python Documentation)
References: <mailman.503.1115940149.29826.python-list@python.org>
	<hGRge.14335$941.9700@trnddc08> <4283fda8.18221170@news.oz.net>
	<d62dg3$tpe$1@sea.gmane.org>
	<mailman.32.1115997422.29328.python-list@python.org>
	<1116002227.923231.309150@f14g2000cwb.googlegroups.com>
Message-ID: <4284f28c.80913136@news.oz.net>

On 13 May 2005 09:37:07 -0700, "Matt" <matthew_shomphe at countrywide.com> wrote:

>
>Christopher J. Bottaro wrote:
>> Christopher J. Bottaro wrote:
>>
>> > Bengt Richter wrote:
>> >
>> >>  >>> type(obj)
>> >>  <class '__main__.A'>
>> >>  >>> type(obj).mro()
>> >>  [<class '__main__.A'>, <class '__main__.B1'>, <class
>'__main__.B2'>,
>> >>  [<class '__main__.C'>, <type 'object'>]
>> >>  >>> tuple(x.__name__ for x in type(obj).mro())
>> >>  ('A', 'B1', 'B2', 'C', 'object')
>> >
>> > Wow awesome, thats exactly what I was looking for.
>>
>> Wait a sec...why doesn't the following code work then?
>>
Well, I suspect it actually does work, technically, but I suspect
it hints at the way old-style classes were implemented in the environment
of the new, rather than giving you what you might expect.

>> class FWException(Exception): pass
>> class FWA(FWException): pass
>> class FWB(FWA): pass
>> class FWC(FWB): pass
>> e = FWC()
>> print [ cl.__name__ for cl in type(e).mro() ]
>>
>> Thanks again.
>> --C
>
>
>Is it because you need to inherit from "object"?
>
>class FWException(Exception, object): pass # note "object"
>class FWA(FWException): pass
>class FWB(FWA): pass
>class FWC(FWB): pass
>e = FWC()
>print [ cl.__name__ for cl in type(e).mro()]
>
>#prints ['FWC', 'FWB', 'FWA', 'FWException', 'Exception', 'object']
>
I'm afraid inheriting explicitly from object will make the exception unraisable.
Exceptions are still based on "classic" classes for some reason that
I don't know enough about to explain.

So if you were hoping to use .mro() with old-style classes to see the
old-style inheritance chain, as opposed to new-style inheritance that
underlies access to special entities involved in the implementation of the old, sorry ;-/

At least that's the way it looks to me, without digging in that part of the code.

Regards,
Bengt Richter


From francescomoi at europe.com  Wed May 11 11:12:33 2005
From: francescomoi at europe.com (francescomoi at europe.com)
Date: 11 May 2005 08:12:33 -0700
Subject: "mysql.h: No such file or directory" when building MySQL-python
In-Reply-To: <1114696756.495735.30200@z14g2000cwz.googlegroups.com>
References: <1114605610.575160.39010@z14g2000cwz.googlegroups.com>
	<1114696756.495735.30200@z14g2000cwz.googlegroups.com>
Message-ID: <1115824353.096893.58050@g49g2000cwa.googlegroups.com>

Thank you Andy for your answer.

I tried by using '1.2.1c1' and '1.2.1c2', but with no success:
---------------
creating build/temp.linux-i686-2.3
gcc -pthread -fno-strict-aliasing -DNDEBUG -O2 -g -pipe -march=i386
-mcpu=i686 - D_GNU_SOURCE -fPIC -fPIC -I/usr/include/python2.3 -c
_mysql.c -o build/temp.linu x-i686-2.3/_mysql.o -I'/usr/include/mysql'
_mysql.c:41:19: mysql.h: No such file or directory
--------------------

Finally I decided to copy '/usr/include/mysql/*.*' to my work
directory,
and I managed to build it. But when trying to execute a simple test,
I get this error message:
---------
Traceback (most recent call last):
  File "./db.py", line 7, in ?
    db = "test")
  File "/usr/lib/python2.3/site-packages/MySQLdb/__init__.py", line 66,
in Connect
    return Connection(*args, **kwargs)
  File "/usr/lib/python2.3/site-packages/MySQLdb/connections.py", line
134, in __init__
    super(Connection, self).__init__(*args, **kwargs2)
_mysql_exceptions.OperationalError: (2002, "Can't connect to local
MySQL server through socket '/var/lib/mysql/mysql.sock' (2)")
-----------------------

Any suggestion?. Regards


Andy Dustman wrote:
> francescomoi at europe.com wrote:
>
> > I'm trying to build 'MySQL-python-1.2.0' on my Linux FC2:
> ...
> > gcc -pthread -fno-strict-aliasing -DNDEBUG -O2 -g -pipe -march=i386
> > -mcpu=i686 -D_GNU_SOURCE -fPIC -fPIC -I/usr/include/python2.3 -c
> > _mysql.c -o build/temp.linux-i686-2.3/_mysql.o
-I'/usr/include/mysql'
> > _mysql.c:41:19: mysql.h: No such file or directory
> ...
> > My server configuration:
> > ---------------------------
> > [ ]# /usr/local/mysql/bin/mysql_config
> > 	--cflags        [-I'/usr/local/mysql/include/mysql']
> >         --libs          [-L'/usr/local/mysql/lib/mysql'
-lmysqlclient
> > -lz -lcrypt -lnsl -lm]
> >         --socket        [/tmp/mysql.sock]
> >         --port          [3306]
> >         --version       [3.23.58]
> ...
> > Any suggestion? Thank you very much.
>
> Fedora's mysql_config puts quotes around the directory names, which
> confuses things. Try MySQL-python-1.2.1c1. I don't think this
entirely
> solves the problem, but I think I know how to fix it for 1.2.1c2. But
> try it and report your results here:
>
>
https://sourceforge.net/tracker/index.php?func=detail&aid=1146226&group_id=22307&atid=374932



From amy at us.ibm.com  Sun May 15 23:36:56 2005
From: amy at us.ibm.com (Amy Redding)
Date: Sun, 15 May 2005 21:36:56 -0600
Subject: Amy Redding/Tucson/IBM is out of the office.
Message-ID: <OF39BA6837.551A5F4D-ON87257003.0013DCA1-87257003.0013DCA1@us.ibm.com>





I will be out of the office starting  05/12/2005 and will not return until
05/16/2005.

I am out of the office until Mon. May 16
For assistance see Said Lamri x2374
-------------- next part --------------
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From __peter__ at web.de  Tue May 17 11:04:44 2005
From: __peter__ at web.de (Peter Otten)
Date: Tue, 17 May 2005 17:04:44 +0200
Subject: Sorting x lists based on one list ... maybe an example would make
	sense:
References: <eonie.426$VB6.363@newssvr12.news.prodigy.com>
	<ssnie.428$VB6.184@newssvr12.news.prodigy.com>
Message-ID: <d6d14l$5vj$00$1@news.t-online.com>

> Philippe C. Martin wrote:
> 
>> I'm looking for an easy algorithm - maybe Python can help:
>> I start with X lists which intial sort is based on list #1.
>> I want to reverse sort list #1 and have all other lists sorted
>> accordingly.

One way, using a helper list with indices:

>>> l1 = ['a','b','c']
>>> l2 = ['toto','titi','tata'] # 'toto' refers to 'a', 'titi' to b' ....
>>> l3 = ['foo','bar','doe'] # 'foo' refers to 'a' ........
>>> indices = sorted(range(len(l1)), key=l1.__getitem__, reverse=True)
>>> for items in l1, l2, l3:
...     items[:] = [items[i] for i in indices]
...
>>> l1
['c', 'b', 'a']
>>> l2
['tata', 'titi', 'toto']
>>> l3
['doe', 'bar', 'foo']

Another way would be to merge the three lists into one of 3-tuples, sort,
and unmerge, similarly to the DSU pattern -- which raises the question: why
are you using three lists in the first place?

Peter




From Neruocomp at yahoo.com  Sat May 14 14:22:48 2005
From: Neruocomp at yahoo.com (David)
Date: 14 May 2005 11:22:48 -0700
Subject: A new to Python question
References: <1116088663.428932.130860@g43g2000cwa.googlegroups.com>
	<1116092670.420301.196570@o13g2000cwo.googlegroups.com>
Message-ID: <1116094967.991001.306340@g14g2000cwa.googlegroups.com>

Thank you very much.  Tulpes are really neat now that I've looked at
them.  So after just fixing it, I changed it up and I would like to
show it off now.

#! /usr/bin/python
#This program takes two vectors and multiplies them
#against a 10X10 array.  It also then gives the dot product,
#sum, and max value of the array.

import Numeric
def abc(package):
    """Takes two arrays and performs predetermined calculations,
       Then returns the solutions back as the same array, along
       with the dot product, sum, and max value of the array.

       Data slots:
           0 - First Array
           1 - Second Array
           2 - Dot product
           3 - Sum
           4 - Max Value"""
    f = Numeric.zeros((10,10))
    for i in range(10):
        for j in range(10):
            f[i,j] = (i+1)+(j+1)

    e = Numeric.matrixmultiply(f, package[0])
    g = Numeric.matrixmultiply(Numeric.transpose(f),package[1])
    package[0] = e
    package[1] = g
    package[2] = Numeric.dot(package[0],package[1])
    package[3] = Numeric.sum(package[0])
    package[4] = package[1][Numeric.argmax(package[1])]
    return package

data = [Numeric.arange(1,11),Numeric.arange(1,11)*2,0,0,0]
#data = [Array X, Array Y, Dot product, Sum, Max Value]

print 'Array X:',data[0]
print 'Array Y:',data[1]

data = abc(data)

print 'Calling function abc'
print 'Array X:',data[0]
print 'Array Y:',data[1]
print 'Dot Product of X and Y:',data[2]
print 'Sum of array X:',data[3]
print 'Max value of array Y:',data[4]

I think its just wonderful now, but if you got any other suggestions,
Please do tell.  Thanks everyone.

David



From simon.brunning at gmail.com  Wed May 25 04:29:16 2005
From: simon.brunning at gmail.com (Simon Brunning)
Date: Wed, 25 May 2005 09:29:16 +0100
Subject: Dr. Dobb's Python-URL! - weekly Python news and links (May 24)
In-Reply-To: <u5ecm2-duk.ln1@lairds.us>
References: <d6vgpr$jlb$1@lairds.us> <d6vm00$h1s$1@news.doit.wisc.edu>
	<u5ecm2-duk.ln1@lairds.us>
Message-ID: <8c7f10c605052501291eee061a@mail.gmail.com>

On 5/24/05, Cameron Laird <claird at lairds.us> wrote:
> General principle:  if in doubt about the significance of an item in
> "Python-URL!", assume that it's intended in a constructive way.

I find that if you make the same assumption about c.l.py in general,
you are seldom wrong. That's a big part of the reason that I like it
here.

-- 
Cheers,
Simon B,
simon at brunningonline.net,
http://www.brunningonline.net/simon/blog/


From rkern at ucsd.edu  Wed May 25 22:13:49 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Wed, 25 May 2005 19:13:49 -0700
Subject: Checking for a full house
In-Reply-To: <ECBA357DDED63B4995F5C1F5CBE5B1E801B0F752@its-xchg4.massey.ac.nz>
References: <ECBA357DDED63B4995F5C1F5CBE5B1E802F31834@its-xchg4.massey.ac.nz>
	<ECBA357DDED63B4995F5C1F5CBE5B1E801B0F752@its-xchg4.massey.ac.nz>
Message-ID: <d73b9a$c0$1@sea.gmane.org>

Tony Meyer wrote:

> def isfullHouse(roll):
>     return len(set(roll)) != 2

[1, 1, 1, 1, 2] is not a full house.

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From oriana.falco at thalesesec.com  Tue May  3 15:39:51 2005
From: oriana.falco at thalesesec.com (oriana.falco at thalesesec.com)
Date: 3 May 2005 12:39:51 -0700
Subject: text strings to binary...
Message-ID: <1115149191.862429.51610@g14g2000cwa.googlegroups.com>

Hi,

I've been working with Python for a bit now but I just came accross a
problem and I'm not sure how to approach it. I'd like to convert a text
string into binary data format. I though I'd use the struct module and
the pack function but I can't get it to work. I'm using Python 2.3.3 in
Windows XP.

Thanks in advance for the help, 
Oriana



From mwm at mired.org  Sat May  7 19:14:43 2005
From: mwm at mired.org (Mike Meyer)
Date: Sat, 07 May 2005 18:14:43 -0500
Subject: Newbie : checking semantics
References: <1115503520.392357.230620@f14g2000cwb.googlegroups.com>
Message-ID: <86oebmsk64.fsf@guru.mired.org>

"LDD" <loicderoyand at yahoo.fr> writes:

> I am new to python and was very enthustic about its possibilities when
> I discover that python is really what it is : just a scripting
> language.

That "just" covers a *very* big application space. So-called scripting
languages are being used in an ever-widening variety of ways.

> The fact that python doesn't check if the symbol
> AFunctionThatIsntDefined is defined, is really bad when you develop big
> pieces of code. You will never be sure that your code is free of this
> kind of dummy errors and testing every possible execution paths is
> nightmarish !

Testing every possible execution path may be nighmarish, but it's a
*requirement* for writing robust software. This is true whether
undefined variables are caught at compile time, execution time, or
later(*). You're never sure your code is free of bugs no matter what
you do, but adequate testing can help eliminate most of the dummy
ones. Failure to do that testing will ensure the presence of dummy
bugs in the code if you're developing a big piece of code, no matter
when they are detected.

Personally, I'm neutral on this issue. Clearly, declaring variables
saves time by catching such typos early. Equally clearly, not
declaring the variables saves time in that you don't have to enter the
declarations. While most RAD languages don't use variable
declarations, there are a number of factors that contribute to them
being faster than conventional languages, so the individual
contribution of this particular factor is unclear.

   <mike

*) There are languages out there that quietly plug in a default value
when you reference an unassigned variable. That means the bug doesn't
show up until you start checking output values, at which point you
find garbage. Adequate testing will uncover these bugs, but finding
the actual bug is a PITA.

-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From jerf at jerf.org  Fri May  6 12:27:11 2005
From: jerf at jerf.org (Jeremy Bowers)
Date: Fri, 06 May 2005 12:27:11 -0400
Subject: How to detect a double's significant digits
References: <1115314620.902071.323410@f14g2000cwb.googlegroups.com>
	<dOtee.706030$w62.64217@bgtnsc05-news.ops.worldnet.att.net>
	<pan.2005.05.05.20.32.38.680014@jerf.org>
	<117lmgrjssnlf04@corp.supernews.com>
	<pan.2005.05.06.03.02.05.806769@jerf.org>
	<mailman.86.1115366278.29826.python-list@python.org>
Message-ID: <pan.2005.05.06.16.27.11.814301@jerf.org>

On Fri, 06 May 2005 08:27:03 +0200, Fredrik Lundh wrote:

> Jeremy Bowers wrote:
> 
>> > A step which will require him to tell the printing routine how many
>> > digits he wants printed.
>>
>> Not necessarily; consider the str() of a float in Python, especially
>> given the "significant digits" aspect (it may be ill-defined, but I can
>> think of several well-defined ways to mean that, where str() embodies
>> one of them). The easiest way to tell how long the number will be when
>> str prints it out is to simply ask it.
> 
> and what language is str() implemented in?

Who cares? It demonstrates the existence of a print routine that prints a
variable number of characters.

>> In C++, this may be harder, as your output software may insist on
>> rendering everything directly, with no way to reach in and tell what it
>> did. Imagine the standard IOStreams, without the ability to stream into
>> a string.
> 
> but you can stream into a string buffer, and you can use sprintf() from
> C++, so what's your point, besides stating that "if things were harder,
> they would be harder"?

Giving the original poster the benefit of the doubt, I assumed he was
dealing with some sort of screen library that would render something
without telling him the size, that didn't use streams at all. If that
library also implemented its own pretty print, string streams and
everything else don't help; you need *that* library's pretty print.


From rkern at ucsd.edu  Wed May 18 08:39:23 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Wed, 18 May 2005 05:39:23 -0700
Subject: speeding up Python script
In-Reply-To: <3f0os2F4lpshU1@individual.net>
References: <3evgolF56gtkU3@individual.net>	<mailman.125.1116378401.8733.python-list@python.org>
	<3f0os2F4lpshU1@individual.net>
Message-ID: <d6fd0e$tka$1@sea.gmane.org>

Luis P. Mendes wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
> 
> The reason why I'm using six nested for loops is because I need to find
> the best output using those six variables as input.
> 
> Here's the simplified code:
> 
> for per in range():
> ~    for s in range():
> ~        for t in range():
> 	    for v in range():
> ~                for n in range():
> ~                    for l in range():

What's the size of each dimension in the parameter space? If you 
absolutely need an exhaustive search, then you are going to have to live 
with the long runtimes. The fact that psyco didn't help significantly 
suggests that Python optimizations aren't going to help much.

You should examine your problem and determine if you really need an 
exhaustive search or if you can live with some other search strategy. 
Read up on "combinatorial optimzation" and "discrete optimization."

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From mfranklin1 at gatwick.westerngeco.slb.com  Thu May 26 03:32:21 2005
From: mfranklin1 at gatwick.westerngeco.slb.com (Martin Franklin)
Date: Thu, 26 May 2005 08:32:21 +0100
Subject: Has ComboBox ctrl in Tkinter?
In-Reply-To: <t42fm2-hm3.ln1@lairds.us>
References: <d70vik$snj$1@sea.gmane.org>	<mailman.78.1117005973.18027.python-list@python.org>
	<t42fm2-hm3.ln1@lairds.us>
Message-ID: <d73tug$8da$1@sea.gmane.org>

Cameron Laird wrote:
> In article <mailman.78.1117005973.18027.python-list at python.org>,
> Fredrik Lundh <fredrik at pythonware.com> wrote:
> 
>>"????????" <dreamingpython at 163.com> wrote:
>>
>>
>>>i have not find the ComboBox in Tkinter,has it? where to get the doc about
>>>how to use combobox ctrl?
>>
>>the Tix add-on contains a combobox:
>>
>>   http://docs.python.org/lib/node727.html
>>
>>see
>>
>>   http://docs.python.org/lib/node725.html
>>
>>for some information on how to check for a working Tix install.
>>
>>if you cannot get Tix to work (or don't want to use it), there's a combobox in
>>the bwidgets package as well:
>>
>>   http://tkinter.unpythonic.net/bwidget/
>>
>></F> 
>>
>>
>>
> 
> 
> There are also several pure-Tk implementations <URL:
> http://wiki.tcl.tk/combobox >, including Bryan Oakley's
> popular one, all of which can be used directly from 
> Tkinter.
> 


not to mention pure python implementations :-)

http://pmw.sourceforge.net/


Martin









From mefjr75 at hotmail.com  Sun May 15 13:30:29 2005
From: mefjr75 at hotmail.com (M.E.Farmer)
Date: 15 May 2005 10:30:29 -0700
Subject: A new to Python question
In-Reply-To: <1116177150.371043.212050@o13g2000cwo.googlegroups.com>
References: <1116088663.428932.130860@g43g2000cwa.googlegroups.com>
	<1116102355.715816.192840@z14g2000cwz.googlegroups.com>
	<mailman.12.1116136959.15315.python-list@python.org>
	<4286fffb.215424243@news.oz.net>
	<1116177150.371043.212050@o13g2000cwo.googlegroups.com>
Message-ID: <1116178229.298451.26710@g14g2000cwa.googlegroups.com>

It looks like the docs could use some examples of the various
assignments it refers to.
I think something like Bengt posted would be a nice addition if it
included assignments with slices and dicts too.
Just a thought.
M.E.Farmer



From jonasmg at softhome.net  Tue May 17 05:07:46 2005
From: jonasmg at softhome.net (Jonas Melian)
Date: Tue, 17 May 2005 10:07:46 +0100
Subject: Python forum
Message-ID: <4289B462.10804@softhome.net>

Hi,

I'm going to say a suggestion, why don't you create a forum like the one
of Ruby (http://www.rubyforums.com/)? for the novices this is a great
help, better than a mail list

It's also worth noting that rubyforums.com has nearly no posts (six
total) because it takes very just a short time working.

I know that you have python-list, it's both an email and a usenet list.
But I think that a forum is great for the learning. The test is in
gentoo's forums. They are a lot of experienced people answering
questions without any problem and it goes very well

Thanks


From sklass at pointcircle.com  Thu May 19 20:27:05 2005
From: sklass at pointcircle.com (rh0dium)
Date: 19 May 2005 17:27:05 -0700
Subject: XML Newbie needing some serious help..
Message-ID: <1116548825.824988.263060@f14g2000cwb.googlegroups.com>

HI all,

I am looking to parse a unix tool called lshw (
http://ezix.sourceforge.net/software/lshw.html ).  Now this provides a
nice XML output which looks similar to the bottom of this message..

Now I want to parse and get some information from it so here is what I
have..

class HWParser:
    def __init__(self):
        if os.path.isfile(LSHW):
            lshw=Exec.Exec(LSHW)
            lshw.execute('-xml')
        else:
            print "lshw does not exist", LSWH
            return "Unknown"
        self.data  = lshw.read()
        self.error = lshw.error()
        self.exit  = lshw.poll()

        if self.error:
            print "Error Exist", self.error
            return
        else:
            self.xml = minidom.parseString(self.data)
            self.xml.normalize()
            self.context=xml.xpath.Context.Context(self.xml)

    def CPUType(self):
        nodes = xml.xpath.Evaluate("//processor/description/text()",
context=self.context)
        for node in nodes:
                print node.nodeValue

    def p (self):
        print self.xml.toxml()

c=HWParser()
c.p()
c.CPUType()

Now if you can't tell I am a newbie and really want to have some help
here.  I know the c.p does work and it does spit out all of the XML
backout.  So getting the data in is not a problem, getting it out
appears to be a problem.

Basically my problem is that I want to bet able to say get me the type
of CPU we have.  I know I could grep this information but I'd rather do
it the proper way.
So when I call c.CPUType it should return
 [ Intel(R) Xeon(TM) CPU 2.8Ghz, Intel(R) Xeon(TM) CPU 2.8Ghz ]
 because there is two of them..

Am I asking too much?  Probably just an idiot at the wheel :)  Feel
free to comment on my style as well as hey - that's probably a bit
messy too :)


Thanks much


--------------------------------------------------



<?xml version="1.0" standalone="yes" ?>
<!-- generated by lshw-B.02.03 -->
<!-- GCC 3.2.3 20030502 (Red Hat Linux 3.2.3-42) -->
    <node id="cpu:0" claimed="true" class="processor"
handle="DMI:0400">
       <description>CPU</description>
       <product>Intel(R) Xeon(TM) CPU 2.80GHz</product>
       <vendor>Intel Corp.</vendor>
       <physid>400</physid>
       <businfo>cpu at 0</businfo>
       <version>15.2.7</version>
       <slot>Proc_1</slot>
       <size units="Hz">2800000000</size>
       <capacity units="Hz">3000000000</capacity>
       <width units="bits">32</width>
       <clock units="Hz">400000000</clock>
       <configuration>
          <setting id="id" value="6" />
       </configuration>
       <capabilities>
          <capability id="fpu" >mathematical co-processor</capability>
          <capability id="fpu_exception" >FPU exceptions
reporting</capability>
          <capability id="wp" />
          <capability id="vme" >virtual mode extensions</capability>
          <capability id="de" >debugging extensions</capability>
          <capability id="pse" >page size extensions</capability>
          <capability id="tsc" >time stamp counter</capability>
          <capability id="msr" >model-specific registers</capability>
          <capability id="pae" >4GB+ memory addressing (Physical
Address Extension)</capability>
          <capability id="mce" >machine check exceptions</capability>
          <capability id="cx8" >compare and exchange
8-byte</capability>
          <capability id="apic" >on-chip advanced programmable
interrupt controller (APIC)</capability>
          <capability id="sep" >fast system calls</capability>
          <capability id="mtrr" >memory type range
registers</capability>
          <capability id="pge" >page global enable</capability>
          <capability id="mca" >machine check architecture</capability>
          <capability id="cmov" >conditional move
instruction</capability>
          <capability id="pat" >page attribute table</capability>
          <capability id="pse36" >36-bit page size
extensions</capability>
          <capability id="clflush" />
          <capability id="dts" >debug trace and EMON store
MSRs</capability>
          <capability id="acpi" >thermal control (ACPI)</capability>
          <capability id="mmx" >multimedia extensions
(MMX)</capability>
          <capability id="fxsr" >fast floating point
save/restore</capability>
          <capability id="sse" >streaming SIMD extensions
(SSE)</capability>
          <capability id="sse2" >streaming SIMD extensions
(SSE2)</capability>
          <capability id="ss" >self-snoop</capability>
          <capability id="ht" >HyperThreading</capability>
          <capability id="tm" >thermal interrupt and
status</capability>
       </capabilities>
       <node id="logicalcpu:0" claimed="true" class="processor"
handle="CPU:6.0">
          <description>Logical CPU</description>
          <physid>6.1</physid>
          <width units="bits">32</width>
          <capabilities>
             <capability id="logical" >Logical CPU</capability>
          </capabilities>
       </node>
       <node id="logicalcpu:1" claimed="true" class="processor"
handle="CPU:6.1">
          <description>Logical CPU</description>
          <physid>6.2</physid>
          <width units="bits">32</width>
          <capabilities>
             <capability id="logical" >Logical CPU</capability>
          </capabilities>
       </node>
    </node>
    <node id="cpu:1" disabled="true" claimed="true" class="processor"
handle="DMI:0401">
       <description>CPU</description>
       <product>Intel(R) Xeon(TM) CPU 2.80GHz</product>
       <vendor>Intel Corp.</vendor>
       <physid>401</physid>
       <businfo>cpu at 1</businfo>
       <version>15.2.7</version>
       <slot>Proc_2</slot>
       <size units="Hz">2800000000</size>
       <capacity units="Hz">3000000000</capacity>
       <width units="bits">32</width>
       <clock units="Hz">400000000</clock>
       <configuration>
          <setting id="id" value="6" />
       </configuration>
       <capabilities>
          <capability id="fpu" >mathematical co-processor</capability>
          <capability id="fpu_exception" >FPU exceptions
reporting</capability>
          <capability id="wp" />
          <capability id="vme" >virtual mode extensions</capability>
          <capability id="de" >debugging extensions</capability>
          <capability id="pse" >page size extensions</capability>
          <capability id="tsc" >time stamp counter</capability>
          <capability id="msr" >model-specific registers</capability>
          <capability id="pae" >4GB+ memory addressing (Physical
Address Extension)</capability>
          <capability id="mce" >machine check exceptions</capability>
          <capability id="cx8" >compare and exchange
8-byte</capability>
          <capability id="apic" >on-chip advanced programmable
interrupt controller (APIC)</capability>
          <capability id="sep" >fast system calls</capability>
          <capability id="mtrr" >memory type range
registers</capability>
          <capability id="pge" >page global enable</capability>
          <capability id="mca" >machine check architecture</capability>
          <capability id="cmov" >conditional move
instruction</capability>
          <capability id="pat" >page attribute table</capability>
          <capability id="pse36" >36-bit page size
extensions</capability>
          <capability id="clflush" />
          <capability id="dts" >debug trace and EMON store
MSRs</capability>
          <capability id="acpi" >thermal control (ACPI)</capability>
          <capability id="mmx" >multimedia extensions
(MMX)</capability>
          <capability id="fxsr" >fast floating point
save/restore</capability>
          <capability id="sse" >streaming SIMD extensions
(SSE)</capability>
          <capability id="sse2" >streaming SIMD extensions
(SSE2)</capability>
          <capability id="ss" >self-snoop</capability>
          <capability id="ht" >HyperThreading</capability>
          <capability id="tm" >thermal interrupt and
status</capability>
       </capabilities>
       <node id="logicalcpu:0" claimed="true" class="processor"
handle="CPU:6.0">
          <description>Logical CPU</description>
          <physid>6.1</physid>
          <width units="bits">32</width>
          <capabilities>
             <capability id="logical" >Logical CPU</capability>
          </capabilities>
       </node>
       <node id="logicalcpu:1" claimed="true" class="processor"
handle="CPU:6.1">
          <description>Logical CPU</description>
          <physid>6.2</physid>
          <width units="bits">32</width>
          <capabilities>
             <capability id="logical" >Logical CPU</capability>
          </capabilities>
       </node>
    </node>



From jason.mobarak at gmail.com  Thu May  5 04:39:35 2005
From: jason.mobarak at gmail.com (Jason  Mobarak)
Date: 5 May 2005 01:39:35 -0700
Subject: properties vs. eval()
In-Reply-To: <1115235178.971840.248160@o13g2000cwo.googlegroups.com>
References: <1115235178.971840.248160@o13g2000cwo.googlegroups.com>
Message-ID: <1115282375.131965.118320@z14g2000cwz.googlegroups.com>

Why are you using eval in the first place? This isn't bash. Use setattr
and getattr for dynamic attribute access.



From exarkun at divmod.com  Sun May  1 13:46:07 2005
From: exarkun at divmod.com (Jp Calderone)
Date: Sun, 01 May 2005 17:46:07 GMT
Subject: Multiple threads in a GUI app (wxPython),
	communication between worker thread and app?
In-Reply-To: <7xsm1627q3.fsf@ruckus.brouhaha.com>
Message-ID: <20050501174607.15422.915671869.divmod.quotient.12140@ohm>

On 01 May 2005 10:09:56 -0700, Paul Rubin <"http://phr.cx"@nospam.invalid> wrote:
>"fooooo" <phark52 at yahoo.com> writes:
>> How would I get the worker thread to open a GUI window in the main GUI
>> thread? After that GUI window is open, how can I send and recv messages
>> from/to the GUI window?
>
>First of all the favorite Pythonic way to communicate between threads
>is with synchronized queues--see the Queue module.  Have the worker
>thread put stuff on a queue and have the main GUI thread read from it.

  Yea, this is a good way.  Also, it is essentially what you describe below :)  The Queues are just created and drained by the GUI library instead of the user's application code.

>
>Secondly, I don't know about wxPython, but in tkinter you have to
>resort to a kludge in order for the gui thread to handle gui events
>and also notice stuff on a queue.  There's a tkinter command to run
>some function after a specified time (say 50 msec).  So you'd set that
>timeout to check the queue and restart the timer, which means the gui
>would check 20x a second for updates from the worker threads.  When it
>got such an update, it would create a new window or whatever.

  You can do better than this.  Tkinter has an after_idle function, which lets you post an event to the Tkinter thread _immediately_.  This is basically the Queue "put" operation.

>
>It could be that wxPython has a cleaner way of doing this, or you
>might have to do something similar.

  It has essentially the same thing, PostEvent().

> Python thread support seems to have been something of an afterthought 
> and there's a lot of weirdness like this to deal with.

  I'm not sure what you see as weird about this.

  Jp


From dalke at dalkescientific.com  Tue May  3 00:15:51 2005
From: dalke at dalkescientific.com (Andrew Dalke)
Date: Tue, 03 May 2005 04:15:51 GMT
Subject: lists in cx_Oracle
References: <pan.2005.04.05.18.44.52.434578@dalkescientific.com>
	<pan.2005.04.30.17.02.16.988085@dalkescientific.com>
	<1115047620.602263.180780@o13g2000cwo.googlegroups.com>
	<pan.2005.05.02.16.33.57.959347@dalkescientific.com>
	<1115056746.166202.97140@f14g2000cwb.googlegroups.com>
Message-ID: <pan.2005.05.03.04.15.54.256350@dalkescientific.com>

infidel wrote:
> I think perhaps you are asking for something that the OCI doesn't
> provide.

But it doesn't need to be supported by the OCI.

> And really, it all boils down to the list comprehension:
> 
> in_clause = ', '.join([':id%d' % x for x in xrange(len(ids))])

And why can't the equivalent to that be supported in the
DB-API interface, so I can pass in a list/tuple and have
it just work?

> ... elegance is certainly subjective, and the above statement isn't the
> cleanest ever, but it solves your main problem while avoiding the other
> problem you mentiong (sql injection).  Seems "elegant enough" to me.

The problem I mentioned is supporting inexperienced developers
(scientists writing software without local programming support)
who, in my experience, don't know about this pitfall and are
more likely to use a close but wrong solution than this correct
one.  repr(ids) is after all much easier to write.

				Andrew
				dalke at dalkescientific.com



From rrr at ronadam.com  Sat May 14 23:05:39 2005
From: rrr at ronadam.com (Ron Adam)
Date: Sat, 14 May 2005 23:05:39 -0400
Subject: Exception question
Message-ID: <4286BC83.1040209@ronadam.com>


I'm trying to understand exception handling better and have a question I 
haven't been able to find an answer too.  Which probably means It won't 
work, but...

Do exceptions that take place get stored in a stack or list someplace?

For example in:

try:
     try:
         try:
             riskyfunc()
             # error 1
         except:
             pass
         crazyclass()
         # error 2
     except:
         pass
     iffycalc()
     # error 3
except:
     pass

# print any errors that occurred here.


If errors 1,2,and 3 are possible errors, can I get
a list of them, or can I only see the last one?

I know I can catch the error and store it myself with,

     except Exception, exc:

or possibly,

     errlist = []
     errlist.append(sys.exc_info())

But what I want to know is does the interpreter do that in any way?  And 
if so, can I access it?

Cheers,
_Ron_Adam





From robby.findler at gmail.com  Sun May 29 17:45:48 2005
From: robby.findler at gmail.com (Robby Findler)
Date: 29 May 2005 14:45:48 -0700
Subject: 2005 ICFP Programming Contest
Message-ID: <1117403148.380277.253600@g49g2000cwa.googlegroups.com>

Think your favorite programming language is the best one out
there? Put it to the test in this year's International Conference
on Functional Programming's annual Programming Contest. The
contest is coming up in a little under 4 weeks and we have just
released more information (including a live cd, mailing list, and
prize details) to the web page, at:

    http://icfpc.plt-scheme.org/

This year's competition rewards programmers who can plan ahead. As
before, we'll announce a problem and give you three days to solve it.
Two weeks later, we'll announce a change to the problem specification
and give you one day to adapt your program to the new spec. And you
guessed it: the second half will be worth considerably more than the
first.

Important dates:

  Problem announced: Friday, June 24th, 9:00am CDT (UTC-6)
  Initial entries due: Monday, June 27th, 9:00am CDT (UTC-6)
  Revision announced: Saturday, July 9th, 9:00am CDT (UTC-6)
  Final entries due: Sunday, July 10th, 9:00am CDT (UTC-6)

ICFP Contest Organizers
icfpc at plt-scheme.org



From volker_grabsch at v.notjusthosting.com  Sat May 14 14:51:17 2005
From: volker_grabsch at v.notjusthosting.com (Volker Grabsch)
Date: Sat, 14 May 2005 20:51:17 +0200
Subject: Multiple "cmp"s chained one after another
References: <d64io9$s6o$05$1@news.t-online.com>
	<d64pgi$tc8$1@news2.zwoll1.ov.home.nl>
	<yIadnSai_7pVlxvfRVn-jw@powergate.ca>
Message-ID: <d65hb4$fgr$02$3@news.t-online.com>

Peter Hansen wrote:
> 
> Or just use the .timetuple() method on datetime objects and sort on the 
> 8th element of the 9-element tuple, which is the day-of-the-year.

An interesting idea. But wouldn't sorting by (dd.month,dd.day) be more
effective?

In other words: Does .timetuple() create a tuple, or does it just return
a tuple which is present anyway?


Greets,

-- 
Volker Grabsch
---<<(())>>---
\frac{\left|\vartheta_0\times\{\ell,\kappa\in\Re\}\right|}{\sqrt
[G]{-\Gamma(\alpha)\cdot\mathcal{B}^{\left[\oint\!c_\hbar\right]}}}


From "myname" at example.invalid  Thu May 26 12:31:54 2005
From: "myname" at example.invalid (VK)
Date: Thu, 26 May 2005 18:31:54 +0200
Subject: Access from one class to methode of other class
In-Reply-To: <4295f2aa$0$32750$626a14ce@news.free.fr>
References: <3flu22F8g4u4U1@news.dfncis.de>
	<4295f2aa$0$32750$626a14ce@news.free.fr>
Message-ID: <3fmc0hF8jsmkU1@news.dfncis.de>

> VK wrote:
> 
>>Hi, all!
>>
>>In my programm i have to insert a variable from class 2 to class 1 and I
>>get error NameError: global name 'd' is not defined. 
> 
> 
> Looking at your code snippet, I think you have a lot of other errors
> before.
> 
> 
>>class 1:
>>   self.entry = Entry(self.entryframe)
> 
> NameError : self is not defined
> 
> etc...
> 

That is not real code, only dummy describing the problem


From skip at pobox.com  Tue May 17 08:39:47 2005
From: skip at pobox.com (Skip Montanaro)
Date: Tue, 17 May 2005 07:39:47 -0500
Subject: optparse global
In-Reply-To: <7oti81l4m9qjj5pfee4dquecfiq7rsfocc@4ax.com>
References: <1116264761.204065.15980@g14g2000cwa.googlegroups.com>
	<mailman.52.1116265519.8733.python-list@python.org>
	<1116273397.597407.256760@g49g2000cwa.googlegroups.com>
	<mailman.61.1116274575.8733.python-list@python.org>
	<1116279718.395023.42630@g14g2000cwa.googlegroups.com>
	<7oti81l4m9qjj5pfee4dquecfiq7rsfocc@4ax.com>
Message-ID: <17033.58899.471431.408727@montanaro.dyndns.org>


    Dennis> So far as I understand, the 
    Dennis> global
    Dennis> is not needed for your example.

I think the original context was that optparse was being used in the context
of a function.

Skip


From jeffbernstein at yahoo.com  Wed May 25 20:23:45 2005
From: jeffbernstein at yahoo.com (jeffbernstein at yahoo.com)
Date: 25 May 2005 17:23:45 -0700
Subject: Q: "...Learning with Python" ...a property that addition and
	multiplication have...
Message-ID: <1117067025.233387.323910@z14g2000cwz.googlegroups.com>

Greetings.

I'm reading "How to think like a computer scientist: Learning with
Python" and there's a question regarding string operations. The
question is, "Can you think of a property that addition and
multiplication have that string concatenation and repetition do not?"

I thought it was the commutative property but "<string>"*3 is
equivalent to 3*"<string>". Any ideas?

Thanks,

Jeff



From timothy at open-networks.net  Fri May  6 08:53:59 2005
From: timothy at open-networks.net (Timothy Smith)
Date: Fri, 06 May 2005 22:53:59 +1000
Subject: py2exe + svn - the final drama 
In-Reply-To: <427AD7E8.1060500@open-networks.net>
References: <427AD7E8.1060500@open-networks.net>
Message-ID: <427B68E7.4010005@open-networks.net>

Timothy Smith wrote:

>ok, i am updating my program from my svn - this works, however, i am 
>getting the following error when i close the program. the zip file 
>successfully updates, so i'm curious as to the meaning of this.
>
>Traceback (most recent call last):
>  File "Main.pyo", line 820, in ValidateLogin
>  File "Main.pyo", line 863, in ShowMainFrameItems
>  File "glob.pyo", line 22, in glob
>  File "glob.pyo", line 50, in glob1
>  File "fnmatch.pyo", line 42, in filter
>zipimport.ZipImportError: bad local file header in Z:\temp\library.zip
>
>not that once i have finished client.update(''), it has successfully 
>updated the zipfile, i open a dialoge box saying "click ok and restart 
>program" AFTER i click on the above error pops up and my app shuts down 
>as intended.
>
>ideas?
>  
>
ok i have done some digging and i cound this

/* Check to make sure the local file header is correct */
	fseek(fp, file_offset, 0);
	l = PyMarshal_ReadLongFromFile(fp);
	if (l != 0x04034B50) {
		/* Bad: Local File Header */
		PyErr_Format(ZipImportError,
			     "bad local file header in %s",
			     archive);
		fclose(fp);


can anyone explain to me about zip file headers and why it would be different/incorrect and give me this error?
		return NULL;




From rrr at ronadam.com  Wed May 18 18:37:05 2005
From: rrr at ronadam.com (Ron Adam)
Date: Wed, 18 May 2005 22:37:05 GMT
Subject: Sorting x lists based on one list ... maybe an example would
	make sense:
In-Reply-To: <RN6dnZMrqNbpMRbfRVn-vA@comcast.com>
References: <eonie.426$VB6.363@newssvr12.news.prodigy.com>
	<ssnie.428$VB6.184@newssvr12.news.prodigy.com>
	<d6d14l$5vj$00$1@news.t-online.com>
	<_Nnie.1050$5Z1.166@newssvr30.news.prodigy.com>
	<0OMie.27565$VH2.6316@tornado.tampabay.rr.com>
	<RN6dnZMrqNbpMRbfRVn-vA@comcast.com>
Message-ID: <lsPie.27924$VH2.17175@tornado.tampabay.rr.com>

Steven Bethard wrote:

> Ron Adam wrote:
>>    grades.sort(lambda x,y: cmp(students[x[1]][0], students[y[1]][0])) 

> Assuming that students[x[1]][0] is what you want to sort on, this may 
> also be written as:
> 
>     grades.sort(key=lambda x: students[x[1]][0])
	

Yes, I figured there was a better way to write it.

Thanks, Steve



From atabhcy at yahoo.com  Wed May 18 17:23:47 2005
From: atabhcy at yahoo.com (atabhcy at yahoo.com)
Date: 18 May 2005 14:23:47 -0700
Subject: command to update a web page
In-Reply-To: <1116369864.388173.319130@f14g2000cwb.googlegroups.com>
References: <1116364404.542712.273200@g44g2000cwa.googlegroups.com>
	<1116368290.299045.175160@g44g2000cwa.googlegroups.com>
	<1116369864.388173.319130@f14g2000cwb.googlegroups.com>
Message-ID: <1116451427.663547.253110@g14g2000cwa.googlegroups.com>

Thanks
I used the httplib module to establish and test a connection now the
next step is to login supplying a username and password.
Any examples of these available somewhere
This is what i have so far
import httplib, urllib
conn = httplib.HTTPConnection("xxx.xx.xx.xxx")
conn.request("GET", "/index.php")
response = conn.getresponse()
print response.status, response.reason
data = response.read()
conn.close()



From bill.pursell at gmail.com  Sat May 14 16:30:03 2005
From: bill.pursell at gmail.com (bill)
Date: 14 May 2005 13:30:03 -0700
Subject: incorrect(?) shlex behaviour
Message-ID: <1116102603.247959.284790@g49g2000cwa.googlegroups.com>

Consider:
>>> import shlex
>>> shlex.split('$(which sh)')
['$(which', 'sh)']

Is this behavior correct?  It seems that I should
either get one token, or the list
['$','(','which','sh',')'],
but certainly breaking it the way it does is
erroneous.  

Can anyone explain why the string is being split
that way?



From Scott.Daniels at Acm.Org  Tue May 10 11:30:15 2005
From: Scott.Daniels at Acm.Org (Scott David Daniels)
Date: Tue, 10 May 2005 08:30:15 -0700
Subject: Advice needed on __del__
In-Reply-To: <mailman.245.1115689789.29826.python-list@python.org>
References: <d5o1s1$8h3$1@sea.gmane.org>	<d5obmp$cqh$1@sea.gmane.org>	<mailman.232.1115672394.29826.python-list@python.org>	<427ffa0d$1@nntp0.pdx.net>
	<mailman.245.1115689789.29826.python-list@python.org>
Message-ID: <4280cd54$1@nntp0.pdx.net>

Andr? Roberge wrote:
> Scott David Daniels wrote:
> 
>> Andr? Roberge wrote:
>>
>>> ...  Each time I refresh the screen, I could
>>> force that call, then check to see if Evil has been
>>> destroyed by Python, which would give me the information
>>> I need to destroy Evil_twin behind the scene myself -
>>> which is what I am really after.
>>
>> What might work is to keep a weakref to Evil in Evil_twin.
>> Upon refresh, you could check if the weakref has gone stale.
>> Is that good enough?
> 
> ...
Try something like this:
++ import weakref
>  class UsedRobot(object):
--     def __init__(self, ..., parent=Visible_world()):
++     def __init__(self, ..., jeckyll=None, parent=Visible_world()):
++         # need to know if we are good or evil.
>          # Visible_world is a Singleton - see Python cookbook
-->        true_robot = parent.addOneRobot(...)    # <---Evil_twin created
>          self.robot = parent.robot_dict[true_robot.name]
>          self.name = true_robot.name
>          self.program = rur_program() # Singleton
>          self.parent = parent
>          self.parent.object_dict[self.name] = True  # <--- new trick
>          self.program.wait_update_refresh(self.robot, self.name)
++         if jeckyll is None:
++             # Making a good twin.  Make an evil partner
++             twin = parent.addOneRobot(..., jeckyll=self)
++             self.twin = lambda: return twin # match weakref interface
++             # hold a ref to the evil twin, so it will be alive
++         else:
++             # Making an evil twin.  Make a weak ref to the good
++             twin = parent.addOneRobot(..., jeckyll=self, ...)
++             self.twin = weakref.ref(jeckyll)
-->    def __del__(self):
-->        self.parent.object_dict[self.name] = False
...

Somewhere else when deciding to draw a particular robot:
          ... robot = whatever ...
-->      <draw robot>
++       if robot.twin() is None:
++           # This must be an evil twin with a dead good twin
++           <avoid drawing robot>
++       else:
++           # this is either a good twin or
++           <draw robot>
...

--Scott David Daniels
Scott.Daniels at Acm.Org


From bruce+usenet at cenderis.demon.co.uk  Mon May  2 10:04:19 2005
From: bruce+usenet at cenderis.demon.co.uk (Bruce Stephens)
Date: Mon, 02 May 2005 15:04:19 +0100
Subject: BitKeeper for Python?
References: <IOade.1185051$Xk.343206@pd7tw3no>
	<slrnd7bsn8.pa3.nick@irishsea.home.craig-wood.com>
	<87ll6xaizm.fsf@cenderis.demon.co.uk>
	<du7zmvdu4iw.fsf@mozart.cc.tut.fi>
Message-ID: <87hdhlafmk.fsf@cenderis.demon.co.uk>

Ville Vainio <ville at spammers.com> writes:

[...]

>     Bruce> Or Codeville, also written in Python.
>
> Or bazaar-ng, also written in python.
>
>     Bruce> Codeville's said to be pretty usable.
>
> Ditto, through the repo format has not been stabilized yet.

The impression I get is that bazaar-ng probably isn't ready for real
use yet:

    Warning: bzr is at an early stage of development, and the design
    is still changing from week to week. The documents here may be
    inconsistent with themselves or with the code, and sometimes refer
    to features that are planned but not yet written.

I think I'd give it a while.


From ark at acm.org  Thu May 26 09:53:45 2005
From: ark at acm.org (Andrew Koenig)
Date: Thu, 26 May 2005 13:53:45 GMT
Subject: __init__() not called automatically
References: <1117081917.760603.82610@z14g2000cwz.googlegroups.com>	<mailman.120.1117082812.18027.python-list@python.org><1117083921.273155.190790@g44g2000cwa.googlegroups.com>
	<mailman.122.1117088782.18027.python-list@python.org>
Message-ID: <Jxkle.833658$w62.402161@bgtnsc05-news.ops.worldnet.att.net>

"Sakesun Roykiattisak" <sakesun at boonthavorn.com> wrote in message 
news:mailman.122.1117088782.18027.python-list at python.org...

> Does c++ call base class constructor automatically ??
> If I'm not wrong, in c++ you also have to call base class constructor 
> explicitly.

In C++, if you don't call a base-class constructor (I am saying "a" rather 
than "the" because there might be more than one direct base class), it is 
called automatically with no arguments.  The only case in which you must 
call it explicitly is if it will not accept an empty argument list.




From srijit at yahoo.com  Fri May  6 05:41:20 2005
From: srijit at yahoo.com (Srijit Kumar Bhadra)
Date: 6 May 2005 02:41:20 -0700
Subject: Python at MS Event!
References: <1115344056.135846.153730@f14g2000cwb.googlegroups.com>
Message-ID: <1115372480.804865.277680@o13g2000cwo.googlegroups.com>

Was it IronPython 0.7.x or standard Python 2.4.1?

Regards,
/Srijit



From lbolognini at gmail.com  Tue May 24 11:34:49 2005
From: lbolognini at gmail.com (lbolognini at gmail.com)
Date: 24 May 2005 08:34:49 -0700
Subject: staticmethod and classmethod
In-Reply-To: <d6v2s5$blp$1@ucsnew1.ncl.ac.uk>
References: <d6v2s5$blp$1@ucsnew1.ncl.ac.uk>
Message-ID: <1116948889.538977.270000@g44g2000cwa.googlegroups.com>

Think I read something about it here:

http://heather.cs.ucdavis.edu/~matloff/Python/

not sure though.

Lorenzo



From prabapython at yahoo.co.in  Tue May 24 06:57:11 2005
From: prabapython at yahoo.co.in (praba kar)
Date: Tue, 24 May 2005 11:57:11 +0100 (BST)
Subject: reg python related job searching
In-Reply-To: 6667
Message-ID: <20050524105711.89895.qmail@web8405.mail.in.yahoo.com>

Dear All,

Can any one guide me how to get python
related jobs?.  Actually Now I am
in Python web programming field.
I have technical knowledge about Python,
ZOPE and Twisted-web(Twisted Python) with 1 year exp..



________________________________________________________________________
Yahoo! India Matrimony: Find your life partner online
Go to: http://yahoo.shaadi.com/india-matrimony


From lonetwin at gmail.com  Fri May 13 08:53:21 2005
From: lonetwin at gmail.com (Steve)
Date: Fri, 13 May 2005 18:23:21 +0530
Subject: property, how to use it?
In-Reply-To: <20050514012648.C48572886F@mail.iame.cn>
References: <20050514012648.C48572886F@mail.iame.cn>
Message-ID: <5a309bd30505130553325fca08@mail.gmail.com>

Hi,

Read this:
http://www.python.org/2.2.3/descrintro.html#property

If you still don't understand or are confused about it's usage, ask here.

Hint: Suppose you need to create an Age class with a 'years' attribute
and ensure that, (assuming I create an object a = Age())
1) when one tries to access 'a.years', a '0' would be returned even if
the value was not set or was set to a negative value, and

2) If a value is assigned to the 'years' attribute, we should check
for negative values.

HTH
Regards
Steve


From matthew_shomphe at countrywide.com  Thu May 26 20:24:02 2005
From: matthew_shomphe at countrywide.com (Matt)
Date: 26 May 2005 17:24:02 -0700
Subject: Symbol Tables
In-Reply-To: <mailman.155.1117148461.18027.python-list@python.org>
References: <mailman.155.1117148461.18027.python-list@python.org>
Message-ID: <1117153442.506311.155200@z14g2000cwz.googlegroups.com>



Dave Zhu wrote:
> Hello,
>
> I would like to know more about Python's symbol
> tables. How are symbol tables implemented in Python?
> Hash tables, lists, or arrays? I would really
> appreciate if there is any documentation that you can
> provide. Thank you in advance.
>
> Dave
>
>
>
> __________________________________
> Discover Yahoo!
> Use Yahoo! to plan a weekend, have fun online and more. Check it out!
> http://discover.yahoo.com/

Google is your friend:
http://www.google.com/search?sourceid=navclient&ie=UTF-8&rls=GGLD,GGLD:2004-49,GGLD:en&q=python+symbol+table



From lycka at carmen.se  Mon May 30 06:59:02 2005
From: lycka at carmen.se (Magnus Lycka)
Date: Mon, 30 May 2005 12:59:02 +0200
Subject: Get number of lines in file
In-Reply-To: <1117226845.178779.308410@g44g2000cwa.googlegroups.com>
References: <1117221428.788567.10060@f14g2000cwb.googlegroups.com>
	<mailman.197.1117222219.18027.python-list@python.org>
	<1117226845.178779.308410@g44g2000cwa.googlegroups.com>
Message-ID: <d7erln$d54$1@wake.carmen.se>

ssmith579 at aol.com wrote:
> Thanks!  I was trying len(cpn_version) and that didn't work.

What's your problem? You get a value that's one more than
you expected? You should use splitlines() instead of split('\n'),
or easier, use readlines() instead of read(). Of course, with
a modern python you can just iterate over the file, but note
the difference between split and splitlines when the last line
is complete and ends with a newline character:

 >>> a = """dgdgsdfg
... sdfgsdfgsdfg
... sdfgsdfgsdfg
... sdfgsdfgsdfg
... """
 >>> a
'dgdgsdfg\nsdfgsdfgsdfg\nsdfgsdfgsdfg\nsdfgsdfgsdfg\n'
 >>> a.split('\n')
['dgdgsdfg', 'sdfgsdfgsdfg', 'sdfgsdfgsdfg', 'sdfgsdfgsdfg', '']
 >>> a.splitlines()
['dgdgsdfg', 'sdfgsdfgsdfg', 'sdfgsdfgsdfg', 'sdfgsdfgsdfg']
 >>>

If you're allergic to splitlines ;) you could do...

 >>> a.rstrip().split('\n')
['dgdgsdfg', 'sdfgsdfgsdfg', 'sdfgsdfgsdfg', 'sdfgsdfgsdfg']

...but it depends how you want to view files that end with
several linefeeds in a row (or other whitespace for that
matter).

 >>> a = """"dfgdfg
... dfgdfg
...
... dgfdfg
...
...
...
... """
 >>> a.split('\n')
['"dfgdfg', 'dfgdfg', '', 'dgfdfg', '', '', '', '']
 >>> a.splitlines()
['"dfgdfg', 'dfgdfg', '', 'dgfdfg', '', '', '']
 >>> a.rstrip().split('\n')
['"dfgdfg', 'dfgdfg', '', 'dgfdfg']

In other words, the right solution depends on what behaviour
you want for such cases (if they might exist with your files).

Experimenting like this with the interpreter is a very
convenient way to get a grip on things in Python, and one of
the reasons that Python debugging is usually quicker than
debugging in other languages.


From ruach at chpc.utah.edu  Wed May  4 12:40:33 2005
From: ruach at chpc.utah.edu (Matthew Thorley)
Date: Wed, 04 May 2005 10:40:33 -0600
Subject: How do you convert a string obj to a file obj?
In-Reply-To: <mailman.11.1115224493.29826.python-list@python.org>
References: <d5at2j$7uv$1@vegh.ks.cc.utah.edu>
	<mailman.11.1115224493.29826.python-list@python.org>
Message-ID: <d5atu3$82m$1@vegh.ks.cc.utah.edu>

John Abel wrote:
> Matthew Thorley wrote:
> 
>> I'm writing a web app whereby a user uploads a tar acrhive which is then
>> opened and processed. My web form reads the file like this:
>>
>> while 1:
>>    data = value.file.read(1024 * 8) # Read blocks of 8KB at a time
>>    if not data: break
>>
>> which leaves me with data as a string obj. The problem that I have is
>> that the function that processes the archive expects a file object. So
>> far the only solution I have found it to write the file to disk and then
>> read it back.
>>
>> Is there an easy way to convert data, in the example above into a file
>> object?
>>
>> Thanks
>> -Matthew
>>  
>>
> fileObj = StringIO.StringIO()
> fileObj.write( data )
> 
> J
> 

I gave that a shot but got this error? Perhaps I misunderstood what kind
of object I needed. Any thoughts?

AttributeError: StringIO instance has no attribute 'rfind'


From codecraig at gmail.com  Wed May  4 08:06:36 2005
From: codecraig at gmail.com (codecraig)
Date: 4 May 2005 05:06:36 -0700
Subject: Read / Write image file
In-Reply-To: <mailman.125.1115151448.6583.python-list@python.org>
References: <mailman.634.1115148003.6582.python-list@python.org>
	<mailman.125.1115151448.6583.python-list@python.org>
Message-ID: <1115208396.640095.155190@g14g2000cwa.googlegroups.com>

so something like,

x = sock.recv(1024)
while (len(x) > 0):
    # do stuff
    x = sock.recv(1024)


??

So what if the client sends 4 bytes, and then sends 8000 bytes?  WIll I
get the first 4 bytes as a separate msg so to speak?  Basically i want
to catch each message from the client as a whole.



From duduca007 at yahoo.com  Thu May 12 12:38:43 2005
From: duduca007 at yahoo.com (Carlos Moreira)
Date: Thu, 12 May 2005 09:38:43 -0700 (PDT)
Subject: Python Polymorphism
Message-ID: <20050512163843.96642.qmail@web52609.mail.yahoo.com>

Dear all,

     How could I use Python polymorphism?
     Which kind of structures Python give me to use
polymorphism?
     Where can I find specific documentation?

          Thanks and Best regards.

Cadu Moreira


		
__________________________________ 
Do you Yahoo!? 
Make Yahoo! your home page 
http://www.yahoo.com/r/hs


From tdelaney at avaya.com  Wed May  4 19:20:48 2005
From: tdelaney at avaya.com (Delaney, Timothy C (Timothy))
Date: Thu, 5 May 2005 09:20:48 +1000
Subject: problem in the compiler ?
Message-ID: <338366A6D2E2CA4C9DAEAE652E12A1DE025204E3@au3010avexu1.global.avaya.com>

Glauco Silva wrote:

> I?m sorry, I feel I didn't comunicate very well .
> The program I am writing is a part of a big project, so it would be
> no use to post it here as it involves many other things and concepts.

We wouldn't want the whole thing - that would be useless. What you need to do is trim it down to the smallest piece of code that causes the problem. Normally doing this reveals the actual problem, and you don't need to go to the newsgroup.

> But i solve my problem and don?t have bug. My code was wrong.

Excellent. You should now post your solution to the newsgroup.

Tim Delaney


From Vikas.Aggarwal at oft.state.ny.us  Sun May 22 10:02:08 2005
From: Vikas.Aggarwal at oft.state.ny.us (Aggarwal, Vikas (OFT))
Date: Sun, 22 May 2005 10:02:08 -0400
Subject: Reverse engineer  Object Oriented Python code
Message-ID: <0BAE938A1E68534E928747B9B46A759A1A0C5A@EXCNYSM0A1AH.nysemail.nyenet>

Hi all,
 I want to try reverese engineering a Server written in Python. 
Its is all object oriented stuff with some use of Design patterns.

Umbrello in Linux has no support for python.
I am not sure if Rational Rose can do this for me (Linux Eval version).
Does any one know UML tool which can reverse engineer python classes into 
 UML and give me class diagrams etc.

-vikas
--------------------------------------------------------
This e-mail, including any attachments, may be confidential, privileged or otherwise legally protected. It is intended only for the addressee. If you received this e-mail in error or from someone who was not authorized to send it to you, do not disseminate, copy or otherwise use this e-mail or its attachments.  Please notify the sender immediately by reply e-mail and delete the e-mail from your system.


From bill.mill at gmail.com  Thu May 19 15:39:59 2005
From: bill.mill at gmail.com (Bill Mill)
Date: Thu, 19 May 2005 15:39:59 -0400
Subject: Convert from numbers to letters
In-Reply-To: <1116530403.328825.216120@z14g2000cwz.googlegroups.com>
References: <1116511005.900715.107260@o13g2000cwo.googlegroups.com>
	<mailman.209.1116513780.8733.python-list@python.org>
	<1116528750.285895.27720@f14g2000cwb.googlegroups.com>
	<mailman.223.1116529228.8733.python-list@python.org>
	<1116530403.328825.216120@z14g2000cwz.googlegroups.com>
Message-ID: <797fe3d405051912391b00ebb1@mail.gmail.com>

On 19 May 2005 12:20:03 -0700, rh0dium <sklass at pointcircle.com> wrote:
> Python 2.3.5 (#1, Mar 20 2005, 20:38:20)
> [GCC 3.3 20030304 (Apple Computer, Inc. build 1809)] on darwin
> 
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
> NameError: name 'sorted' is not defined
> 
> I think you're probably using 2.4 ??

Yes, sorted() is new in python 2.4 .You could use a very lightly
tested pure-python partial replacement:

def sorted(lst, **kwargs):
    l2 = lst[:]
    if kwargs.has_key('key'):
        f = kwargs['key']
        l2.sort(lambda a,b: cmp(f(a), f(b)))
        return l2
    l2.sort()
    return l2

And from your other email:
> I need to go the other way!  tuple2coord

Sorry, I only go one way. It should be transparent how to do it backwards.

Peace
Bill Mill
bill.mill at gmail.com


From slick_mick_00 at hotmail.com  Tue May 31 15:02:30 2005
From: slick_mick_00 at hotmail.com (Michael)
Date: Tue, 31 May 2005 19:02:30 +0000 (UTC)
Subject: working with pointers
References: <d7iapk$6ck$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>	<JJSdnXLcZdUsLQHfRVn-1w@comcast.com><d7ibjg$8en$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
	<mailman.299.1117566077.18027.python-list@python.org>
Message-ID: <d7icc5$ab0$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>

except numbers??

"Dave Brueck" <dave at pythonapocrypha.com> wrote in message
news:mailman.299.1117566077.18027.python-list at python.org...
> Michael wrote:
> > sorry, I'm used to working in c++ :-p
> >
> > if i do
> > a=2
> > b=a
> > b=0
> > then a is still 2!?
> >
> > so when do = mean a reference to the same object
>
> Always.
>
> > and when does it mean make a copy of the object??
>
> Never.
>
> -Dave




From hpk at trillke.net  Fri May 20 17:38:07 2005
From: hpk at trillke.net (holger krekel)
Date: Fri, 20 May 2005 23:38:07 +0200
Subject: [ann] first release of PyPy
Message-ID: <20050520213807.GK13541@solar.trillke.net>

Welcome to PyPy 0.6  
-------------------- 

*The PyPy Development Team is happy to announce the first 
public release of PyPy after two years of spare-time and
half a year of EU funded development.  The 0.6 release 
is eminently a preview release.*  

What it is and where to start 
-----------------------------

Getting started:    http://codespeak.net/pypy/index.cgi?doc/getting_started.html

PyPy Documentation: http://codespeak.net/pypy/index.cgi?doc

PyPy Homepage:      http://codespeak.net/pypy/

PyPy is a MIT-licensed reimplementation of Python written in
Python itself.  The long term goals are an implementation that
is flexible and easy to experiment with and retarget to
different platforms (also non-C ones) and such that high
performance can be achieved through high-level implementations
of dynamic optimisation techniques.

The interpreter and object model implementations shipped with 0.6 can
be run on top of CPython and implement the core language features of
Python as of CPython 2.3.  PyPy passes around 90% of the Python language
regression tests that do not depend deeply on C-extensions.  Some of
that functionality is still made available by PyPy piggy-backing on
the host CPython interpreter.  Double interpretation and abstractions
in the code-base make it so that PyPy running on CPython is quite slow
(around 2000x slower than CPython ), this is expected.  

This release is intended for people that want to look and get a feel
into what we are doing, playing with interpreter and perusing the
codebase.  Possibly to join in the fun and efforts.

Interesting bits and highlights
---------------------------------

The release is also a snap-shot of our ongoing efforts towards 
low-level translation and experimenting with unique features. 

* By default, PyPy is a Python version that works completely with
  new-style-classes semantics.  However, support for old-style classes
  is still available.  Implementations, mostly as user-level code, of
  their metaclass and instance object are included and can be re-made
  the default with the ``--oldstyle`` option.

* In PyPy, bytecode interpretation and object manipulations 
  are well separated between a bytecode interpreter and an 
  *object space* which implements operations on objects. 
  PyPy comes with experimental object spaces augmenting the
  standard one through delegation:

  * an experimental object space that does extensive tracing of
    bytecode and object operations;

  * the 'thunk' object space that implements lazy values and a 'become'
    operation that can exchange object identities.
  
  These spaces already give a glimpse in the flexibility potential of
  PyPy.  See demo/fibonacci.py and demo/sharedref.py for examples
  about the 'thunk' object space.

* The 0.6 release also contains a snapshot of our translation-efforts 
  to lower level languages.  For that we have developed an
  annotator which is capable of infering type information
  across our code base.  The annotator right now is already
  capable of successfully type annotating basically *all* of
  PyPy code-base, and is included with 0.6.  

* From type annotated code, low-level code needs to be generated.
  Backends for various targets (C, LLVM,...) are included; they are
  all somehow incomplete and have been and are quite in flux. What is
  shipped with 0.6 is able to deal with more or less small/medium examples.


Ongoing work and near term goals
---------------------------------

Generating low-level code is the main area we are hammering on in the
next months; our plan is to produce a PyPy version in August/September 
that does not need to be interpreted by CPython anymore and will 
thus run considerably faster than the 0.6 preview release. 

PyPy has been a community effort from the start and it would
not have got that far without the coding and feedback support
from numerous people.   Please feel free to give feedback and 
raise questions. 

    contact points: http://codespeak.net/pypy/index.cgi?contact

    contributor list: http://codespeak.net/pypy/index.cgi?doc/contributor.html 

have fun, 

    Armin Rigo, Samuele Pedroni, 

    Holger Krekel, Christian Tismer, 

    Carl Friedrich Bolz 


    PyPy development and activities happen as an open source project  
    and with the support of a consortium funded by a two year EU IST 
    research grant. Here is a list of partners of the EU project: 
        
        Heinrich-Heine University (Germany), AB Strakt (Sweden)

        merlinux GmbH (Germany), tismerysoft GmbH(Germany) 

        Logilab Paris (France), DFKI GmbH (Germany)

        ChangeMaker (Sweden)



From rhall at thiess.com.au  Wed May 18 09:52:43 2005
From: rhall at thiess.com.au (Bloke)
Date: 18 May 2005 06:52:43 -0700
Subject: SSL (HTTPS) with 2.4
In-Reply-To: <1116422715.320683.228810@g49g2000cwa.googlegroups.com>
References: <1116392416.139727.84630@g49g2000cwa.googlegroups.com>
	<428AD4D1.8030405@v.loewis.de>
	<1116396878.995648.206820@g49g2000cwa.googlegroups.com>
	<1116406256.213128.68180@f14g2000cwb.googlegroups.com>
	<grGie.3984$uR4.2802@newsread2.news.atl.earthlink.net>
	<1116422715.320683.228810@g49g2000cwa.googlegroups.com>
Message-ID: <1116424363.953180.79260@g47g2000cwa.googlegroups.com>

I just tried the https connection through a friends internet connection
which uses a transparent proxy as follows:

import urllib2
f = urllib2.urlopen('https://www.directshares.com.au/')
print f.headers
print f.read()
f.close()

This works fine.  So it must be a problem with either the proxyhandler
(in Python) or our proxy server.  Given that I can connect to the site
through the proxy with a web browser, it must be something to do with
my the way I have set up the proxy handler in python.  I have read
multiple ways of setting up the connection, and this is the only way I
can get it to run with http:

import urllib2

proxy_info = {
    'user' : 'me',
    'pass' : 'password',
    'host' : 'companyproxy.com.au',
    'port' : 8008 }

# build a new opener that uses a proxy requiring authorization
proxy_support =
urllib2.ProxyHandler({"http":"http://%(user)s:%(pass)s@%(host)s:%(port)d"
% proxy_info})
opener = urllib2.build_opener(proxy_support, urllib2.HTTPHandler)

# install it
urllib2.install_opener(opener)


Is there a better way for me to do this?



From mefjr75 at hotmail.com  Mon May  2 08:58:12 2005
From: mefjr75 at hotmail.com (M.E.Farmer)
Date: 2 May 2005 05:58:12 -0700
Subject: MRO problems with diamond inheritance?
In-Reply-To: <1115036337.530436.47890@g14g2000cwa.googlegroups.com>
References: <d53jqq$b88$1@newsg4.svr.pol.co.uk>
	<1114987828.055744.250090@z14g2000cwz.googlegroups.com>
	<1115004565.128735.58670@o13g2000cwo.googlegroups.com>
	<1115008163.017331.306290@o13g2000cwo.googlegroups.com>
	<1115024383.848366.64190@z14g2000cwz.googlegroups.com>
	<1115034897.225080.313990@l41g2000cwc.googlegroups.com>
	<1115036337.530436.47890@g14g2000cwa.googlegroups.com>
Message-ID: <1115038692.213121.222990@l41g2000cwc.googlegroups.com>

>Well, writing that book would be a major undertaking that I am not
>willing to take any soon ;)
Well at least you didn't say NO, so when you DO write the book I will
buy a copy.

>However, all you are asking for is already in my lectures at ACCU
How many people can say ' No book just these lectures that cover
everything you want '
I knew I was asking the right person ;)
Now I just need to read your lectures...but first I am going to wrap my
head in duct tape.
( prevents/contains explosions )
Thanks for your time,
M.E.Farmer



From ng at jpmcgrath.net  Thu May 26 08:04:33 2005
From: ng at jpmcgrath.net (John McGrath)
Date: Thu, 26 May 2005 12:04:33 GMT
Subject: What are OOP's Jargons and Complexities?
References: <1116843761.619249.144790@g47g2000cwa.googlegroups.com>
	<bAske.14563$yx.14338@fe08.lga> <3584469.Aerji1NdQr@yahoo.com>
	<xn0e2ntb7j0p7lg00b@news.verizon.net>
	<2225581.h9zeA6l3zh@yahoo.com>
Message-ID: <xn0e2pbio15rkth001@news.verizon.net>

On 5/26/2005 at 3:11:44 AM, alex goldman wrote:

> What other meanings are there?

http://en.wikipedia.org/wiki/Strongly_typed
http://c2.com/cgi/wiki?StronglyTyped

-- 
Regards,

John McGrath


From scharan20 at gmail.com  Thu May 26 01:05:21 2005
From: scharan20 at gmail.com (Sriek)
Date: 25 May 2005 22:05:21 -0700
Subject: __init__() not called automatically
References: <1117081917.760603.82610@z14g2000cwz.googlegroups.com>
	<mailman.120.1117082812.18027.python-list@python.org>
Message-ID: <1117083921.273155.190790@g44g2000cwa.googlegroups.com>

Tim pointed out  rightly that i missed out the most crucial part of my
question.
i should have said that __init__() is not called automatically only for
the inheritance hierarchy. we must explicitly call all the base class
__init__() fuctions explicitly.
 i wanted a reason for that.
Thanks Tim.



From curi42 at gmail.com  Thu May 26 16:26:28 2005
From: curi42 at gmail.com (Elliot Temple)
Date: 26 May 2005 13:26:28 -0700
Subject: Strange Execution Times
In-Reply-To: <429596B0.8010804@lexicon.net>
References: <1117088059.588457.200270@z14g2000cwz.googlegroups.com>
	<429596B0.8010804@lexicon.net>
Message-ID: <1117139188.344141.263530@z14g2000cwz.googlegroups.com>

hey FYI i found the problem:  i accidentally copied an output file for
my test data.  so all the passwords were exactly 32 chars long.  so
when replacing them with new 32 char passwords, it went much much
faster, I guess because the list kept the same number of chars in it
and didn't have to copy lots of data around.



From andre.roberge at gmail.com  Wed May 18 21:48:07 2005
From: andre.roberge at gmail.com (=?ISO-8859-1?Q?Andr=E9_Roberge?=)
Date: Wed, 18 May 2005 22:48:07 -0300
Subject: ANN: new release of RUR-PLE available
Message-ID: <d6gr75$gg2$2@sea.gmane.org>

Version 0.8.6a is now available.

This version is mostly a bug fix version.
* unicode problem corrected (bug introduced in version 0.8.5)
* linenumber information on syntax errors corrected
* removed the URL browser capability
* corrected typo and change explation of next_to_a_beeper() in lessons
* corrected name of robot in one lesson

Addition:
tower of Hanoi solution(.rur file) (with two typical .wld files)
8 queen puzzle solution (.rur file)

Additional changes expected in version 0.8.6b

Andr?



From titus at caltech.edu  Mon May 23 00:07:00 2005
From: titus at caltech.edu (C. Titus Brown)
Date: Sun, 22 May 2005 21:07:00 -0700
Subject: ANNOUNCE: twill v0.7, scriptable Web testing
Message-ID: <mailman.20.1116853733.18027.python-announce-list@python.org>

ANNOUNCING twill v0.7.

twill is a simple Web scripting language built on top of Python and
mechanize.  It's designed for automated testing of Web sites, but
it may be useful for anybody who needs to deal with Web sites
(with e.g. logins and cookies) in a non-interactive manner.

twill is a reimplementation of Cory Dodt's PBP.

A twill script looks like this:

   # go to the /. login page
   go http://slashdot.org/login.pl

   # fill in the form
   fv 1 unickname test
   fv 1 upasswd test
   submit

   # ok, there's no such account ;). show error HTML.
   show

---

This is the first public release of twill, version 0.7.

(Tagline: "It seems usable to me, but then I'm its author.")

With this release, I'm looking for general feedback on usability, as
well as suggestions on additional use cases.

Download directly here:

     http://darcs.idyll.org/~t/projects/twill-0.7.tar.gz

Documentation is online at

     http://www.idyll.org/~t/www-tools/twill.html

---

Miscellaneous details:

twill is implemented in Python and uses pyparsing and mechanize.  In
addition to the existing simple command language, twill can easily be
extended with Python.  twill also provides a fairly simple and
well-documented wrapper around mechanize.

twill scripts can be recorded with maxq, although scripts may require
some hand tweaking at the moment.  See the twill documentation for
more information.

twill does not understand JavaScript, I'm sorry to say.

--titus, titus at caltech.edu


From cjbottaro at alumni.cs.utexas.edu  Thu May 12 19:21:54 2005
From: cjbottaro at alumni.cs.utexas.edu (Christopher J. Bottaro)
Date: Thu, 12 May 2005 18:21:54 -0500
Subject: How to find the classname of an object? (was Python Documentation)
Message-ID: <d60nvq$c9o$1@sea.gmane.org>

I actually want all the parent classes too.  So if D derives off C derives
off B derives off A, I ultimately want a tuple ('D', 'C', 'B', 'A').

For those of you following the Python Documentation thread, this is a good
example of how the PHP manual is "better".  I found how to do this in a few
seconds in PHP.  I searched the Python docs for "class name", "classname",
"introspection" and "getclass".  I looked in the Class section of the
tutorial also and also the Programming FAQ.  The "related functions"
section of the PHP manual is really helpful.  It would be cool if in the
section for the built-in function isinstance() or issubclass() there is a
section for "related functions" that would point me to getclassname(obj)
(if it exists).

Thanks for the help.

-- C



From xah at xahlee.org  Thu May 12 22:31:49 2005
From: xah at xahlee.org (Xah Lee)
Date: 12 May 2005 19:31:49 -0700
Subject: [perl-python] Range function
Message-ID: <1115951509.004433.47240@z14g2000cwz.googlegroups.com>

Today we'll be writing a function called Range. The Perl documentation
is as follows.

Perl & Python & Java Solutions will be posted in 48 hours.

This is Perl-Python a-day. See
http://xahlee.org/web/perl-python/python.html

  Xah
  xah at xahlee.org
? http://xahlee.org/

--------------------------

Range

     Range($iMax) generates the list [1, 2, ... , $iMax].

     Range($iMin, $iMax) generates the list [$iMin, ... , $iMax].

     Range($iMin, $iMax, $iStep) uses increment $iStep, with the last
element
     in the result being less or equal to $iMax. $iStep cannot be 0. If
     $iStep is negative, then the role of $iMin and $iMax are reversed.

     If Range fails, 0 is returned.

     Example:

      Range(5); # returns [1,2,3,4,5]

      Range(5,10); # returns [5,6,7,8,9,10]

      Range( 5, 7, 0.3); # returns [5, 5.3, 5.6, 5.9, 6.2, 6.5, 6.8]

      Range( 5, -4, -2); # returns [5,3,1,-1,-3]



From beliavsky at aol.com  Sun May 15 15:59:17 2005
From: beliavsky at aol.com (beliavsky at aol.com)
Date: 15 May 2005 12:59:17 -0700
Subject: Newbie : checking semantics
References: <1115503520.392357.230620@f14g2000cwb.googlegroups.com>
	<1115522729.126979.95210@g14g2000cwa.googlegroups.com>
Message-ID: <1116187157.275381.302120@g49g2000cwa.googlegroups.com>

elbertlev at hotmail.com wrote:

<snip>

> 2. Trust me (and other Python programmers most likely would agree)
this
> type of error happens much more seldom then newbies (especially
coming
> from strongly typed languages) imagine while adjusting to the
language.
>
> 3. Python advantages "overpower" drawbacks 10 to 1.
>
> 4. Most likely you never used Fortran :)

The Newbie is outnumbered on this issue in comp.lang.python, but he is
not alone :). In Fortran 77 and earlier versions, many run-time errors
resulted from

(1) misspelling a variable name, since variable declarations were not
required and IMPLICIT NONE (forcing declarations) was standardized only
in Fortran 90.

(2) passing variables of the wrong type (real instead of double
precision, scalar instead of array, etc.) to a procedure -- this could
not be checked at compile-time if the procedure and caller were
compiled separately and then linked. Fortran 90 added MODULEs, partly
to fix this.

I programmed in Fortran 77 for years before using Fortran 90 and find
that in the latter version I am more productive, since a program that
compiled was much more likely to be correct. I think many Fortranners
concur.

ANSI C 89 provides for more static type checking than the original K&R
C, and I think most C programmers appreciate this.

Looking at how other programming languages evolved, based on hard-won
experience, Python looks like a move in the opposite direction -- less
"compile-time" checking.



From yhdanid at yahoo.com  Wed May 11 15:23:55 2005
From: yhdanid at yahoo.com (Obaid R.)
Date: 11 May 2005 12:23:55 -0700
Subject: BluWater: God is not a man
References: <1115824563.613661.169620@g47g2000cwa.googlegroups.com>
Message-ID: <1115839435.018664.70230@f14g2000cwb.googlegroups.com>

For a detailed response to the claims of the poster please refer to the
following.

[1] "Ron Grossi: God is not a man" an essay:
http://groups-beta.google.com/group/microsoft.public.windowsxp.networ...

[2] "Ron Grossi: God is not a man" an entire thread:
http://groups-beta.google.com/group/microsoft.public.windowsxp.networ...

Here is a quick quote showing the man at odds with none other than
Christ, peace and blessings be upon him, (PBBUH) himself:

"Moreover, and on at least two occasions in
the Bible, Christ PBBUH is explicitly
proclaiming that he was sent only to the lost
sheep of the house of Israel, not to anyone
else of the Gentiles.

"But he answered and said, I am not sent but
unto the lost sheep of the house of Israel."
(Matthew 15: 24) (see also Matthew 10:6)."



From davecook at nowhere.net  Mon May  2 07:48:00 2005
From: davecook at nowhere.net (Dave Cook)
Date: Mon, 02 May 2005 11:48:00 GMT
Subject: Which IDE is recommended?
References: <426f90ac$1_2@rain.i-cable.com>
	<slrnd70bt5.d0e.davecook@localhost.localdomain>
	<mailman.39.1114802234.14961.python-list@python.org>
Message-ID: <slrnd7c4rg.4bc.davecook@localhost.localdomain>

On 2005-04-29, John J. Lee <jjl at pobox.com> wrote:

> Dave Cook <davecook at nowhere.net> writes:
>> Pydev has some compelling features, but I wish I didn't have to run eclipse

>> On 2005-04-27, monkey <m at m.com> wrote:
> What are those compelling features of Pydev, for an emacs user?

For me, the code completion feature.  Also, modern anti-aliased font
rendering under Linux doesn't hurt.

Emacs python-mode is still ahead on code formatting.  For example, the way
you can line up code by hitting tab once anywhere on the line.  And I miss
emacs things like M-^ (delete-indentation; joins the line to the previous
line and removes whitespace).  

Eclipse has an emacs keybinding mode, but it's not very comprehensive.

I'm not ready to switch, but I played around enough to know I could get
fairly comfortable if I wanted to.

I exaggerated memory usage a bit.  Eclipse only uses about twice as much RAM
as XEmacs on my Linux box.  Still, I probably wouldn't find it as usable if
this wasn't an AMD64 3200 with 1G RAM.

Dave Cook


From leszczynscyATnospam.yahoo.com.nospam  Wed May 25 22:06:29 2005
From: leszczynscyATnospam.yahoo.com.nospam (Andy Leszczynski)
Date: Wed, 25 May 2005 21:06:29 -0500
Subject: how to import a module from a arbitraty path?
Message-ID: <NtOdnXdnsZi5swjfRVn-oA@comcast.com>

I have a program which is going to dynamicly load components from some 
arbitrary defined paths. How to do that?

A.


From listserver at tdw.net  Wed May 11 11:10:34 2005
From: listserver at tdw.net (Tim Williams)
Date: Wed, 11 May 2005 16:10:34 +0100
Subject: Regarding Mail sending smtplib Module
References: <20050511140612.47363.qmail@web8406.mail.in.yahoo.com>
	<4282191C.90506@plus.net>
Message-ID: <03c301c5563b$94bc1320$5aeda8c0@twilliams>

praba kar  <prabapython at yahoo.co.in> wrote:
>Here I want to avoid this line "Received: from unknown
>(HELO prabahar.enmail.com)     (59.92.13.47)  by
>mailserver with SMTP; 11 May 2005 10:09:11 -0000 " How
>can I do this? . Why python give this line? . Mail
>sending Module in php will not give this type line.

Received headers are added by the receiving server, not by smtplib

The "unknown" refers to the DNS PTR (ie hostname) or lack of one,  of the
machine/address that the email was received from.

HTH :)




From lycka at carmen.se  Mon May 30 15:25:40 2005
From: lycka at carmen.se (Magnus Lycka)
Date: Mon, 30 May 2005 21:25:40 +0200
Subject: Case Sensitive, Multiline Comments
In-Reply-To: <mailman.256.1117477669.18027.python-list@python.org>
References: <1117137316.140791.210430@g14g2000cwa.googlegroups.com>	<z5adnQMsOLiL7AffRVn-hQ@comcast.com>
	<mailman.256.1117477669.18027.python-list@python.org>
Message-ID: <d7fpbl$b1s$1@wake.carmen.se>

Terry Reedy wrote:
> Difference annoyances for different folks, I guess.

IN MY EXPERIENCE, MANY PEOPLE ON THE INTERNET ARE
ANNOYED BY PEOPLE WHO DON'T USE CASE THE WAY THEY
ARE EXPECTED. IT ALSO SEEMS TO ME THAT LOWER CASE
TEXT IS OFTEN MORE EASY TO READ, AND ALSO THAT IT
IS EASIER TO SCAN TEXTS IF CASE IS CONSISTENT. WE
DO AFTER ALL SEE IMAGES ON THE SCREEN. EVEN IF WE
RELATE "IF" WITH "if",  THEY DON'T LOOK THE SAME.
MY SON POINTED AT THE WORD "TOYOTA" IN A MAGAZINE
AND EXCLAIMED "TOTOTA" WHEN HE WAS ONLY THREE. HE
WAS CLEARLY TOO YOUNG TO READ,  BUT HE RECOGNIZED
THE IMAGE OF THE LOGO HE HAD SEEN ON OLD TOYOTAS.
IN GENERAL,  PYTHON "TRIES" TO FORCE A PARTICULAR
STYLE OF CODING ON PROGRAMMERS. WE HAVE TO INDENT
IN A PARTICULAR WAY. THE STYLE OF PROGRAMMING HAS
BEEN CODIFIED IN PEP 008,  AND COWBOY PROGRAMMING
ISN'T REALLY APPRECIATED.  YOU ARE NOT "SUPPOSED"
TO PROGRAM PYTHON "YOUR WAY". YOU ARE SUPPOSED TO
PROGRAM THE RIGHT WAY. IF YOU DON'T LIKE THAT, IT
IS PROBABLY BETTER TO USE ANOTHER LANGUAGE.  PERL
IS MORE OF A COWBOY LANUGAGE.  THE FUNNY THING IS
THAT EVEN PERL IS CASE SENSITIVE! EXPLAIN THAT!!!
IMO IT'S A STRENGTH OF PYTHON THAT PYTHON CODE IS
ALWAYS CONSISTENT IN CASE. IT IS PROBABLY A MINOR
FEATURE COMPARED TO THE BLOCK STRUCTURES ETC, BUT
I THINK IT ADDS TO THE EASE OF READING CODE WHICH
HAS BEEN WRITTEN BY OTHERS. I DO ALSO DISLIKE THE
ALTERNATIVES.  NEITHER CODE WITH INCONSISTENT USE
OF CASE NOR THE STUPID "CASE CORRECTING" FEATURES
IN E.G. THE VISUAL BASIC IDE SEEMS TO BE ANYTHING
TO STRIVE FOR.  IF YOU THOUGHT IT WAS ANNOYING TO
READ THIS,  THEN YOU CAN AT LEAST APPRECIATE THAT
PYTHON CODE NEVER LOOKS LIKE SUCH A COMPACT BLOB!

Who am I kidding with this? Everybody knows that
case doesn't matter, right? The text below isn't
a bit easier to read than the text above, right?

In my experience, many people on the internet are
annoyed by people who don't use case the way they
are expected. It also seems to me that lower case
text is often more easy to read, and also that it
is easier to scan texts if case is consistent. We
do after all see images on the screen. Even if we
relate "IF" with "if",  they don't look the same.
My son pointed at the word "TOYOTA" in a magazine
and exclaimed "Totota" when he was only three. He
was clearly too young to read,  but he recognized
the image of the logo he had seen on old toyotas.
In general,  Python "tries" to force a particular
style of coding on programmers. We have to indent
in a particular way. The style of programming has
been codified in PEP 008,  and cowboy programming
isn't really appreciated.  You are not "supposed"
to program Python "your way". You are supposed to
program the right way. If you don't like that, it
is probably better to use another language.  Perl
is more of a cowboy lanugage.  The funny thing is
that even Perl is case sensitive! Explain that!!!
IMO it's a strength of Python that Python code is
always consistent in case. It is probably a minor
feature compared to the block structures etc, but
I think it adds to the ease of reading code which
has been written by others. I do also dislike the
alternatives.  Neither code with inconsistent use
of case nor the stupid "case correcting" features
in e.g. the Visual Basic IDE seems to be anything
to strive for.  If you thought it was annoying to
read this,  then you can at least appreciate that
Python code never looks like such a compact blob!

oF cOuRsE, wE sHoUlDn'T aSsUmE tHaT pEoPlE wIlL
aBuSe ThE fReEdOm ThEy GeT, bUt I'm RaThEr SaFe
ThAn SoRrY! ;^) I'm ReAlLy hApPy ThAt I'lL nEvEr
HaVe To SeE aLl-CaPs PyThOn PrOgRaMs!



From fredrik at pythonware.com  Thu May 12 16:59:51 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 12 May 2005 22:59:51 +0200
Subject: Exception value cut off
References: <44251.5298295349$1115927745@news.gmane.org>
Message-ID: <d60fll$i4e$1@sea.gmane.org>

"Ryan, Adam" wrote:

> sys.exc_info()[1] returns the first 308 characters of an error message from
> a module.  Is there a way to increase the length so it doesn't get cut off?

sys.exc_info()[1] returns the entire contents of the exception parameter.
if it's cut off, it's either cut off by the code raising the exception (C code
sometimes uses a fixed-size buffer to format the exception string), or by
the tool you're using to display the exception.

</F>





From mwooden at dtptypes.com  Fri May 27 08:01:19 2005
From: mwooden at dtptypes.com (Malcolm Wooden)
Date: Fri, 27 May 2005 12:01:19 +0000 (UTC)
Subject: Strings for a newbie
Message-ID: <d7726f$fdg$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>

I'm trying to get my head around Python but seem to be failing miserably. I 
use RealBasic on a Mac and find it an absolute dream! But Python....UGH!

I want to put a sentence of words into an array, eg "This is a sentence of 
words"

In RB it would be simple:

Dim s as string
Dim a(-1) as string
Dim i as integer

s = "This is a sentence of words"
For i = 1 to CountFields(s," ")
  a.append NthField(s," ",i)
next

That's it an array a() containing the words of the sentence.

Now can I see how this is done in Python? - nope!

UGH!

Malcolm
(a disillusioned Python newbie) 




From rolf.wester at ilt.fraunhofer.de  Tue May 31 04:51:43 2005
From: rolf.wester at ilt.fraunhofer.de (Rolf Wester)
Date: Tue, 31 May 2005 10:51:43 +0200
Subject: plotting with Python
In-Reply-To: <1117489587.774681.186360@f14g2000cwb.googlegroups.com>
References: <429aeac6$1@news.fhg.de>
	<1117489587.774681.186360@f14g2000cwb.googlegroups.com>
Message-ID: <429c25a6$1@news.fhg.de>

dylan.moreland at gmail.com wrote:
> We use dislin in my lab. I don't think it's GPL...
> 
> http://www.linmpi.mpg.de/dislin
> 
Hi,

thank you for your reply. I tried dislin but this didn't work very well 
for me. But I will try it again.

Regards


Rolf



From qwweeeit at yahoo.it  Sat May 21 15:13:57 2005
From: qwweeeit at yahoo.it (qwweeeit at yahoo.it)
Date: 21 May 2005 12:13:57 -0700
Subject: We are one of the world leading legal sources for male impotence
	treatments
In-Reply-To: <mailman.288.1116669152.8733.python-list@python.org>
References: <mailman.288.1116669152.8733.python-list@python.org>
Message-ID: <1116702836.988086.155120@f14g2000cwb.googlegroups.com>

I should need  "a great errrect1on "... but get away from beeing
permanently on the top of the list!



From gldnspud at gmail.com  Fri May  6 00:01:47 2005
From: gldnspud at gmail.com (Matthew Scott)
Date: 5 May 2005 21:01:47 -0700
Subject: Multiple-reader-one-writer (MROW) locking -- soliciting improvements
Message-ID: <1115349896.801550.62710@g14g2000cwa.googlegroups.com>

After being introduced to the concept of MROW locking, I sought a
general implementation of it in Python that implemented reentrant
locks, had a simple interface, and was unit tested.

I found some implementations, but none had all three of these
qualities, so I wrote this recipe:

http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/413393

I'm posting a link to it here in case others find it useful, and also
to solicit feedback for improving the recipe.

Enjoy!

- Matthew



From __peter__ at web.de  Tue May 31 02:54:11 2005
From: __peter__ at web.de (Peter Otten)
Date: Tue, 31 May 2005 08:54:11 +0200
Subject: struct unpack newline
References: <1117189007.980813.182830@g14g2000cwa.googlegroups.com>
	<mailman.170.1117189924.18027.python-list@python.org>
	<1117521795.897167.293120@g49g2000cwa.googlegroups.com>
Message-ID: <d7h1k6$1ns$02$1@news.t-online.com>

grant at idscape.co.za wrote:

> what concerns me though is that although the file is opened in binary
> mode,
> "for line.." has a problem reading the file correctly.

There is _no_ correct way of splitting a file containing binary data in
lines because binary data may contain newline bytes that do not indicate a
new line. E. g.

>>> struct.unpack("l", "\r\n\r\n")
(168626701,)

how should Python know whether it just encountered two empty lines or the
integer 168626701?

Peter



From duduca007 at yahoo.com  Thu May 12 13:44:14 2005
From: duduca007 at yahoo.com (Carlos Moreira)
Date: Thu, 12 May 2005 10:44:14 -0700 (PDT)
Subject: Python Polymorphism
In-Reply-To: 6667
Message-ID: <20050512174414.39238.qmail@web52604.mail.yahoo.com>


--- Fredrik Lundh <fredrik at pythonware.com> wrote:

> www.python.org

:-/

> 
> (have you read the tutorial?)

Are you talking about:
http://docs.python.org/tut/tut.html

I fear that doesn't exist one word about polymorphism
(in an explicit way).
Anyway, I use Python since 2000 year and already use
OO Python features since the begin. But now, I need
more technical informations.

           Thanks and best regards

Cadu Moreira


		
Yahoo! Mail
Stay connected, organized, and protected. Take the tour:
http://tour.mail.yahoo.com/mailtour.html



From stephane.roy at motorola.com  Tue May  3 10:26:52 2005
From: stephane.roy at motorola.com (Stephane Roy)
Date: Tue, 3 May 2005 10:26:52 -0400
Subject: wxpython on cygwin for drPython - ImportError: No module named _core_
Message-ID: <d581p2$1ec$1@newshost.mot.com>

Hi,

Did someone installed and used successfully drPython on Cygwin? The
installation requires
wxpython. I tried many different alternatives (source, binary, etc) but so
far the best I get is the following.

Traceback (most recent call last):
  File "drpython.py", line 45, in ?
    import wx, wx.stc
  File "/lib/python2.4/Lib/site-packages/wx-2.6-msw-unicode/wx/__init__.py",
line 42, in ?
    from wx._core import *
  File "/lib/python2.4/Lib/site-packages/wx-2.6-msw-unicode/wx/_core.py",
line 4, in ?
    import _core_
ImportError: No module named _core_

Thanks in advance
St?phane

Don't take life too seriously, you won't get out of it alive!




From dave.opstad at monotypeimaging.com  Wed May 25 13:11:30 2005
From: dave.opstad at monotypeimaging.com (Dave Opstad)
Date: Wed, 25 May 2005 10:11:30 -0700
Subject: Unusable outer edge of Tkinter canvases?
References: <dave.opstad-71E7F6.08424525052005@news.isp.giganews.com>
	<mailman.98.1117037929.18027.python-list@python.org>
Message-ID: <dave.opstad-CE52D5.10113025052005@news.isp.giganews.com>

In article <mailman.98.1117037929.18027.python-list at python.org>,
 "Fredrik Lundh" <fredrik at pythonware.com> wrote:

> to fix this, you can either set the border width to zero, add scrollbars
> to the widget (this fixes the coordinate system), or explicitly reset the
> coordinate system:
> 
>     w.xview_moveto(0)
>     w.yview_moveto(0)

The canvas's border width was already zero, but when I moved the origin 
to (0,0) via xview_moveto and yview_moveto I was able to successfully 
draw all three rectangles.

Just out of curiosity, why aren't these zeroed to start with when the 
widget is created, given the default border width is zero? And is there 
a way of determining what they're set at, something like a xview_get() 
method? I looked at all the canvas's attributes (calling configure()) 
but nothing in there referred to xview or yview.

Thanks for the help!
Dave


From miki.tebeka at zoran.com  Sun May  1 10:26:24 2005
From: miki.tebeka at zoran.com (Miki Tebeka)
Date: Sun, 1 May 2005 17:26:24 +0300
Subject: How to track down all required shared libraries?
In-Reply-To: <1114896365.287665.126130@o13g2000cwo.googlegroups.com>
References: <1114896365.287665.126130@o13g2000cwo.googlegroups.com>
Message-ID: <20050501142624.GR3204@zoran.com>

Hello sdhyok,

> Now, I am in the situation to run the same program but on several
> different machines with the same Linux OS. To avoid the reinstallation,
> I like to pack up all shared libraries into a directory. Is there a
> good way to track down all shared libraries required to run a Python
> program?
There is a module call "modulefinder" in Python standard library. It might
do what you want.

HTH.
--
------------------------------------------------------------------------
Miki Tebeka <miki.tebeka at zoran.com>
http://tebeka.bizhat.com
The only difference between children and adults is the price of the toys
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From wolfram.kriesing at gmail.com  Fri May 13 17:11:36 2005
From: wolfram.kriesing at gmail.com (Wolfram Kriesing)
Date: Fri, 13 May 2005 23:11:36 +0200
Subject: doc tags?
In-Reply-To: <d62a82$i67$1@sea.gmane.org>
References: <965c85e5050513062433f180d3@mail.gmail.com>
	<d62a82$i67$1@sea.gmane.org>
Message-ID: <965c85e505051314112d4af465@mail.gmail.com>

i am really looking for documenting my code, actually i expect the ide
to interpret them too and show me the doc etc., since i am missing
that a lot. esp. attributes' doc i was missing which made me write
this post
if there is not standard tool (or even a PEP) is there any pythonic
syntax? (which might make it into the standard lib, to be available
like the doc-string also inside the code -  i really like the __doc__)

-- 
cu

Wolfram

On 5/13/05, Fredrik Lundh <fredrik at pythonware.com> wrote:
> Wolfram Kriesing wrote:
> 
> > i was already searching and remember i had seen something like "its not needed".
> >
> > Anyway, are there any doc tags, like in Java/PHPDoc etc, where you can
> > describe parameters (@param[eter]), return values (@ret[urn]),
> > attributes (@var), references (@see), etc?
> 
> do you want to use javadoc-style comments for your documentation?
> 
>     http://effbot.org/zone/pythondoc.htm
> 
> or are you just looking for some syntactic construct that uses an at-
> sign?
> 
>     http://www.python.org/peps/pep-0318.html
>     http://docs.python.org/ref/function.html
> 
> </F>
> 
> 
> --
> http://mail.python.org/mailman/listinfo/python-list
>


From mfranklin1 at gatwick.westerngeco.slb.com  Thu May 12 03:21:04 2005
From: mfranklin1 at gatwick.westerngeco.slb.com (Martin Franklin)
Date: Thu, 12 May 2005 08:21:04 +0100
Subject: TAKE_FOCUS
In-Reply-To: <428229E6.4040900@anvilcom.com>
References: <428229E6.4040900@anvilcom.com>
Message-ID: <d5uvmg$88t$1@sea.gmane.org>

phil wrote:
> WM_TAKE_FOCUS does not work on WinXP ??
> I was sure I had used that on win before.
> Works on Linux.
> 
> I have a function I need to run when the window
> gets the focus. How do you do that in Tkinter
> on Win32?
> Thanks
> 

Take a look at the module docs for Tkinter you will need the
one of the focus_* methods

$pydoc Tkinter

<snip>

      |  focus_set(self)
      |      Direct input focus to this widget.
      |
      |      If the application currently does not have the focus
      |      this widget will get the focus if the application gets

<snip>

Martin



From bokr at oz.net  Thu May 12 02:48:35 2005
From: bokr at oz.net (Bengt Richter)
Date: Thu, 12 May 2005 06:48:35 GMT
Subject: pyvm -- faster python
References: <mailman.164.1115548611.29826.python-list@python.org>
	<1115561483.741761.212140@f14g2000cwb.googlegroups.com>
	<m102l2-9qr.ln1@home.rogerbinns.com>
	<mailman.264.1115716603.29826.python-list@python.org>
	<vu38l2-k5v.ln1@home.rogerbinns.com>
	<7xvf5qbir1.fsf@ruckus.brouhaha.com>
	<nt98l2-1e.ln1@home.rogerbinns.com>
	<7xpsvymlse.fsf@ruckus.brouhaha.com>
	<mailman.334.1115805377.29826.python-list@python.org>
	<7xsm0tb1md.fsf@ruckus.brouhaha.com>
Message-ID: <4282fa92.1316097758@news.oz.net>

On 11 May 2005 19:48:42 -0700, Paul Rubin <http://phr.cx at NOSPAM.invalid> wrote:

>Stelios Xanthakis <sxanth at ceid.upatras.gr> writes:
>> I didn't know much about PyPy.  It seems that pyvm is *exactly* what
>> pypy needs to boost its performance.  Does pypy has the vm in python
>> as well?  Does pypy have a compiler that produces 2.4 bytecodes?
>
>Pypy makes native machine code, not bytecode.
I thought they hoped to experiment with many targets, which would presumably
include generating code for different CPUs and VMs in various representations,
not necessarily just machine code via low level C or ASM, but I haven't checked
current status re that.

Regards,
Bengt Richter


From tismer at stackless.com  Sat May 21 20:42:30 2005
From: tismer at stackless.com (Christian Tismer)
Date: Sun, 22 May 2005 02:42:30 +0200
Subject: first release of PyPy
In-Reply-To: <87is1dyru8.fsf@wilson.rwth-aachen.de>
References: <mailman.264.1116625088.8733.python-list@python.org>	<1116629407.638782.145950@g47g2000cwa.googlegroups.com>	<1116644536.741250.249860@g44g2000cwa.googlegroups.com>	<mailman.279.1116649250.8733.python-list@python.org>	<1116653460.808204.74460@g43g2000cwa.googlegroups.com>	<87mzqpytep.fsf@wilson.rwth-aachen.de>	<7xfywhxerd.fsf@ruckus.brouhaha.com>
	<87is1dyru8.fsf@wilson.rwth-aachen.de>
Message-ID: <428FD576.6020301@stackless.com>

Torsten Bronger wrote:

...

> I've been told by so many books and on-line material that Python
> cannot be compiled (unless you cheat).  So how is this possible?

Have a look at Psyco, that will be folded into and improved
by PyPy.

-- 
Christian Tismer             :^)   <mailto:tismer at stackless.com>
tismerysoft GmbH             :     Have a break! Take a ride on Python's
Johannes-Niemeyer-Weg 9A     :    *Starship* http://starship.python.net/
14109 Berlin                 :     PGP key -> http://wwwkeys.pgp.net/
work +49 30 802 86 56  mobile +49 173 24 18 776  fax +49 30 80 90 57 05
PGP 0x57F3BF04       9064 F4E1 D754 C2FF 1619  305B C09C 5A3B 57F3 BF04
      whom do you want to sponsor today?   http://www.stackless.com/


From rrr at ronadam.com  Fri May 13 00:59:13 2005
From: rrr at ronadam.com (Ron Adam)
Date: Fri, 13 May 2005 00:59:13 -0400
Subject: Python Documentation (should be better?)
In-Reply-To: <J_udnayhIptlAx7fRVn-3Q@comcast.com>
References: <5C99C308457E6D4EA5448EA52A66004A675A6E@or.mxim.com>	<17026.26789.592527.975821@montanaro.dyndns.org>	<mailman.398.1115843305.29826.python-list@python.org>	<eL2dnQqPycfr7R_fRVn-1w@comcast.com>	<mailman.470.1115911344.29826.python-list@python.org>	<86sm0sig7k.fsf@guru.mired.org>	<mailman.478.1115915427.29826.python-list@python.org>
	<J_udnayhIptlAx7fRVn-3Q@comcast.com>
Message-ID: <42843421.5070501@ronadam.com>

Steven Bethard wrote:

> Skip Montanaro wrote:
> 
>>    Mike> Given that Python hides the difference between user-defined
>>    Mike> objects and built-in objects, it's not clear to me that anything
>>    Mike> other than the current system, with all the classes/types in one
>>    Mike> place, makes sense.
>>
>>Maybe the Module Index should be renamed "Module/Type Index" and embellished
>>with the builtin types, so that you'd find "float (builtin)", "string
>>(builtin)", "dict (builtin)", etc. in the appropriate alphabetical
>>positions.
> 
> 
> +1
> 
> Yeah, I'd love to see something like this.  My preference would actually 
> to be to leave the "Global Module Index" the same and add a "Builtin 
> Type Index" along the lines of the module index.
> 
> One of my current problems with the documentation is that, for builtin 
> types, the constructor is found in "Built-in Functions"[1], but the 
> methods are found in some subsection of "Built-in Types"[2]. 
> Additionally, the "Built-in Types"[2] section mixes protocols like the 
> Sequence, Iterator and Mapping protocols with the methods of some of the 
>   builtin types that implement these protocols.

The two manuals on my book shelf that are the most worn are Alex 
Martelli's "Python in a Nutshell", (A 2.5 version would be really nice.. 
hint to Alex), and a C pocket reference.  Both are organized by 
*subject* and not by library/include.

What I would like to see is something like the following for each item:

0. reference @ sequence code
2. "Builtin" | "import <library>"
3. Type/class: Name/Syntax
4. Description with examples
6. Links to other references of this item in docs
7. Links to related functions or objects in same doc type
8. Keywords

In this way, each item can be a complete entry in a data base that can 
be sorted in different ways.  Alphabetical, by subject, by library,  etc...

The quick reference guide description should mirror the doc strings. 
Short but sweet if possible. Any changes to one should be made to the other.

An advanced technical language manual would also be nice for both those 
who are interested, and to record implementing details.  To start it 
could just be any current technical details that do not fit well in the 
other categories.

So summing up:

+ Each item/object in a database in a consistent way.
+ Four main categories:  Tutor, Quick Ref, Full Ref, and Technical Ref.
+ Cross reference links in each item.
+ Dependency, ie... "from <library> import <name> listed with each item.
+ keywords enabling look up and searches by subject

As it's been pointed out several times, most of this is already there. 
The hard part, and it may not be as hard as I think, is generating the 
web pages from this in a nice way, and to create a good search interface 
that can create a list of links by a chosen reference selection.

The rest of this is a matter of presentation and details.  Which I think 
  can be worked out, and done to be very similar to the existing pages.



Example from Python Docs:

4.1.3 String functions

The following functions are available to operate on string and Unicode 
objects. They are not available as string methods.

capwords( 	s)
     Split the argument into words using split(), capitalize each word 
using capitalize(), and join the capitalized words using join(). Note 
that this replaces runs of whitespace characters by a single space, and 
removes leading and trailing whitespace.

maketrans( 	from, to)
     Return a translation table suitable for passing to translate() or 
regex.compile(), that will map each character in from into the character 
at the same position in to; from and to must have the same length.

     Warning: Don't use strings derived from lowercase and uppercase as 
arguments; in some locales, these don't have the same length. For case 
conversions, always use lower() and upper().



Could become something like:

"""
Python Quick Ref: 4.1.3.1
import string
Function: capwords(s) -> string

Returns a copy of string <s> with the first letter of each word capitalized.

S = string.capwords("a lowercase string")

Also see capwords: |tutor|full_docs|tech_docs|
Related to: |string.swapcase|string.title|string.capitalize|
Keywords: |standard library|string module|function|string|capital
"""

"""
Python Quick Ref: 4.1.3.2
import string
Function: maketrans(from, to) -> table

Return a translation table suitable for passing to translate() or 
regex.compile(), that will map each character in <from> into the 
character at the same position in <to>; <from> and <to> must have the 
same length.

table = maketrans('abcdefg', 'ABCDEFG')

Also see maketrans: |tutor|full_docs|tech_docs|
Related to:|regex.compile|string.translate||string.strip|string.replace|
Keywords: |standard library|string module|function|string|change
"""


Note that each individual record is complete and stands alone, with 
links to a few other relavant items.  The keywords allow for some nice 
search results.  The notes left off would be in the full docs reference. 
  (They would be included in the quick ref if they also are in the doc 
string.)

A tutorial link may not be available for everthing, but everything that 
is in the tutorial could have that link included.

Cheer's _Ron





From mwm at mired.org  Thu May 12 00:39:03 2005
From: mwm at mired.org (Mike Meyer)
Date: Wed, 11 May 2005 23:39:03 -0500
Subject: Defunct Processes With subprocess.Popen
References: <mailman.331.1115800200.29826.python-list@python.org>
Message-ID: <86u0l9kqhk.fsf@guru.mired.org>

John Abel <jabel at plus.net> writes:

> Hi!
>
> I'm currently writing a script which launches external programs, but
> it keeps leaving zombie/defunct processes behind, until I kill the
> launching script, which is a bit of a pain, as it's supposed to be a
> daemon.  The code I'm using is:
>
> newPid = subprocess.Popen( cmdLine[ 1: ], executable=cmdLine[ 0 ],
> close_fds=True ).pid
>
> I've tried calling it using the shell=True flag, but that leaves a
> zombie for the sh, instead.  I'm not interested in any output, the
> only thing I need returning, is the pid of the new process.  I've
> tried using spawn*, with the same results.  Does anyone have any ideas?

The processes are hanging around in a zombie state so the parent (or
someone) can get their exit status.

Try calling os.wait() until it returns the exit status for all the
processes you've started.

          <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From jatinder at textualanalytics.com  Tue May 31 05:07:00 2005
From: jatinder at textualanalytics.com (Jatinder Singh)
Date: Tue, 31 May 2005 04:07:00 -0500
Subject: Stupid Newbie Question Concerning CGI and Reading Forward Slashes
In-Reply-To: <1117533288.097148.134270@g14g2000cwa.googlegroups.com>
References: <1117533288.097148.134270@g14g2000cwa.googlegroups.com>
Message-ID: <1117530420.429c293422493@mailbox.textualanalytics.com>

Hi Joey,
I am not sure but still I might mean something and give you some clues.
Just try to change / with double slash(//) or with backslash(\ or \\).
next option is read about os module it can give u some hints about how paths
should be written.
Hope These will help.


Quoting "Joey C." <joeyjwc at gmail.com>:

> Hi, I want to make a configuration script for something and it needs to
> read inputs from an HTML file.  A couple of these inputs are textboxes
> that the user inputs a path in.  For example:
> Your Home Directory:
> [/home/me/public_html/]
> 
> So, I'm using Python to read these inputs and store them in a
> configuration file.  However, I cannot get the CGI to read the forward
> slashes (/).  It just leaves a blank area.  So, for example:
> Input: /usr/bin/sendmail
> Reads: sendmail
> 
> Input: /home/me/public_html/
> Reads: (Nothing.)
> 
> params = cgi.FieldStorage()
> 
> def writep(key, name):
>   if params.has_key(key):
>     fconfig.write(name + ": " + os.path.split(params[key].value)[1] +
> ";\n")
> 
> ^ This is the function for handling a key that is read by the cgi.  The
> "name" is the name that it stores the key under so the configuration
> file looks like:
> name: key;[Line Break]
> 
> However, is there a way to get it to read the forward slashes?  If
> there isn't do you suggest having the user use a different character
> and adding a function in the script to substitute a forward slash for
> that character?
> 
> I tried looking for this for a long while, but maybe I didn't search
> enough.  Thanks for all of your help and I'm sorry if this is a
> question that has been asked 15 million times.
> 
> Joey C.
> 
> -- 
> http://mail.python.org/mailman/listinfo/python-list
> 


-- 
Regards,
Jatinder Singh

? Everyone needs to be loved... especially when they do not deserve it.?


From querypk at gmail.com  Fri May  6 12:26:45 2005
From: querypk at gmail.com (querypk at gmail.com)
Date: 6 May 2005 09:26:45 -0700
Subject: min max of a list
References: <1115245476.036508.273930@g14g2000cwa.googlegroups.com>
	<gaCdnf8Pf9xj7-TfRVn-tQ@comcast.com>
	<1115259992.558123.189580@g14g2000cwa.googlegroups.com>
	<temdnRBabsR2_effRVn-gg@comcast.com>
Message-ID: <1115396805.064114.183010@f14g2000cwb.googlegroups.com>

Hi Steve!
I am not sure if I was clear with my previous post .Ok let me rephrase
it .

Assume the values list is the
content of a histogram. Then we see that
values = [  0,  72,   2,   4,   9,   2,   0,   0,  42,  26,   0, 282,
23,   0, 101, 0,   0,   0,   0,   0]

 1 is repeated 72 times, 3 -> 4 times and so on. That is the index
would be the value repeated as many times as in the list.
Now If we find the max and look for the adjcent index.

That is if we plot the above list as a histogram. We will have crests
and troughs ie peaks and dips. if we find two dips then the region
between the two dips could be a range like [0,  72,   2] .So here we
are not looking for a zero. But if we find dips then we consider the
regions between it as a bin and group it.

|       /\
|  /\  /  \  /\
| /  \/    \/  \
|/_____________________________________
 |----|-----|---|
    1    2    3

so pictorially. In the above plot. If y axis is the list above. then we
need to bin it this way.
If I use you previous approach using the groupby then all these three
regions will be considered as one.

Hope I am clear this time.



From rbt at athop1.ath.vt.edu  Fri May 20 16:04:32 2005
From: rbt at athop1.ath.vt.edu (rbt)
Date: Fri, 20 May 2005 16:04:32 -0400
Subject: appending key-value pairs to a dict
Message-ID: <d6lfsg$5t1$1@solaris.cc.vt.edu>

I know how to setup an empty list and loop thru something... appending 
to the list on each loop... how does this work with dicts?

I'm looping thru a list of files and I want to put the file's name and 
its sha hash into a dict on each loop.

Many thanks,

rbt


From maxm at mxm.dk  Tue May 10 07:52:30 2005
From: maxm at mxm.dk (Max M)
Date: Tue, 10 May 2005 13:52:30 +0200
Subject: Unique Elements in a List
In-Reply-To: <mailman.269.1115718974.29826.python-list@python.org>
References: <1115676903.432187.294910@z14g2000cwz.googlegroups.com>	<7xbr7jq3gb.fsf@ruckus.brouhaha.com><mailman.256.1115710148.29826.python-list@python.org>	<42806991$0$274$edfadb0f@dread12.news.tele.dk>
	<mailman.269.1115718974.29826.python-list@python.org>
Message-ID: <42809fe1$0$253$edfadb0f@dread12.news.tele.dk>

Fredrik Lundh wrote:
> Max M wrote:
> 
> 
>>>depending on the data, it might be more efficient to store the
>>>"last seen index" in a dictionary, and sort the result on the way
>>>out (if necessary).  something like
>>
>>form sets import Set
>>
>>data = list(Set([0.1,0.5,0.6,0.4,0.1,0.5,0.6,0.9]))
> 
> 
> read the OP's spec again.

Well if you want to haggle over minor details like a spec, it's easy to 
be critical!


data = [0.1,0.5,0.6,0.4,0.1,0.5,0.6,0.9]

freqs = {}
for position in xrange(len(data)):
     freqs.setdefault(data[position], []).append(position)
unique = [(value, positions[0]) for (value, positions) in freqs.items()
           if len(positions) == 1]



-- 

hilsen/regards Max M, Denmark

http://www.mxm.dk/
IT's Mad Science


From rupole at hotmail.com  Sat May 21 11:45:37 2005
From: rupole at hotmail.com (Roger Upole)
Date: Sat, 21 May 2005 11:45:37 -0400
Subject: How to receive events (eg. user mouse clicks) from IE
References: <1116476411.853695.235670@g14g2000cwa.googlegroups.com>
	<428c3cbe$1_1@spool9-west.superfeed.net>
	<1116529345.146032.91880@f14g2000cwb.googlegroups.com>
	<428cf5a9$1_1@spool9-west.superfeed.net>
	<1116537405.495521.252570@f14g2000cwb.googlegroups.com>
Message-ID: <428f5882$1_2@spool9-west.superfeed.net>

There does appear to be some sort of conflict between the two event
hooks.  I wasn't seeing it before since IE was getting google from my
browser cache and it was coming up almost instantaneously.  As soon
as I switched the URL to a page that loads slowly, I got the same
result.

   Adding win32gui.PumpWaitingMessages() to the wait loop
seems to allow both event hooks to run without blocking each other.

     Roger


<cal_2pac at yahoo.com> wrote:
> Thanks for the response again. The solution is pretty close but not yet
> complete
> This is what I observed.
> a) I tried to use the delay mechanism as suggested below
> ie.
> ie.Navigate('www.google.com')
> while ie.ReadyState !- 4
>       time.sleep(0.5)
>
> d=win32com.client.DispatchWithEvents(ie.Document, Doc_Events)
>
> IE *fails* to load the webpage
>
> b) Then I changed the delay to a specified time interval eg
> ie.Navigate('www.google.com')
> time.sleep(60) #wait for a minute
> d=win32com.client.DispatchWithEvents(ie.Document, Doc_Events)
>
> IE loads the web page *after* 60 seconds
>
> c) Then I used raw_input() eg
> ie.Navigate('www.google.com')
> raw_input()
> d=win32com.client.DispatchWithEvents(ie.Document, Doc_Events)
> IE now loads the webpage and prompts the user. If I click on the web
> page *before* clicking ok on the raw_input prompt - then it correctly
> invokes the Doc_Events method Ononactivate method.
>
>>From these observations, it seems that there is some kind of a race
> condition / timing issue happening. Can you please comment (or maybe
> point me to other sources of info that I can investigate).
> I am running Python 2.3 on Windows 2k machine.
>



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From http  Tue May 17 14:58:24 2005
From: http (Paul Rubin)
Date: 17 May 2005 11:58:24 -0700
Subject: reference counting and file objects
References: <slrnd8kf7b.40a.jtr@ofb.net>
Message-ID: <7xoeb94r3j.fsf@ruckus.brouhaha.com>

John Reese <jtr at ofb.net> writes:
> Consider the function above.  Do I need the fp.close(), or will the
> file be closed automatically when fp goes out of scope and its
> reference count drops to zero?

In CPython, fp gets closed when it leaves scope.  In other
implementations you may need try-finally.  There's been occasional
discussion of possible new Python control blocks to make this easier.


From http  Wed May  4 14:49:14 2005
From: http (Paul Rubin)
Date: 04 May 2005 11:49:14 -0700
Subject: Difference between Python CGI applications and Php applications
References: <mailman.152.1115205397.6583.python-list@python.org>
Message-ID: <7xk6meakt1.fsf@ruckus.brouhaha.com>

praba kar <prabapython at yahoo.co.in> writes:
>        I have a project that is conversion of Php Web applications
> into Python cgi applications.  In my mind compare python-cgi php is
> better.

If performance is an issue you don't want to use any type of cgi.
Consider using mod_python instead.


From rupole at hotmail.com  Thu May 19 03:10:22 2005
From: rupole at hotmail.com (Roger Upole)
Date: Thu, 19 May 2005 03:10:22 -0400
Subject: How to receive events (eg. user mouse clicks) from IE
References: <1116476411.853695.235670@g14g2000cwa.googlegroups.com>
Message-ID: <428c3cbe$1_1@spool9-west.superfeed.net>

The two you'll need to run makepy for are Microsoft Internet Controls and
Microsoft HTML object Library.  If you run them manually, you should be
able to look at the generated code to get the guids.
Here's a minimal example:

import win32com.client

ie_mod=win32com.client.gencache.EnsureModule('{EAB22AC0-30C1-11CF-A7EB-0000C05BAE0B}',0, 
1, 1)
class IE_Events(ie_mod.DWebBrowserEvents2):
    def OnNavigateComplete2(self, pDisp, URL):
        print 'OnNavigateComplete2:', URL

ie=win32com.client.DispatchWithEvents('InternetExplorer.Application',IE_Events)
ie.Visible=1
ie.Navigate('http://www.google.com')

   hth
      Roger


<cal_2pac at yahoo.com> wrote in message 
news:1116476411.853695.235670 at g14g2000cwa.googlegroups.com...
>I am trying to trap events from internet explorer eg. when user clicks
> on an html link - I need to get notified for that event.
>
> After looking through the newgroups / internet and reading through
> various sections in programming python on win32 - I understand that
> this can be done using DispatchWithEvents.
> I have also referred to discussions on comp.lang.python
> http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/a3c502d06412a5f8/0ee3083e71316da7?q=dispatchwithevents&rnum=43#0ee3083e71316da7
>
> and
>
> http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/1da0668794851296/5bcec1fda216c598?q=dispatchwithevents&rnum=19#5bcec1fda216c598
>
> So far - none of the newgroups postings report that IE events were
> trapped successfully (at least I could not find any). However, there is
> enough evidence that it can be done.
> My problems at the moment:
> a) The examples use early binding. However, I cannot get Python makepy
> to generate the code to force makepy process at run time - since COM
> makepy utility that I invoke from python win 32 does not have any entry
> for internet explorer.
> I tried to find the CLSID for IE 3050F613-98B5-11CF-BB82-00AA00BDCE0B
> but I get an exception
> b) Also one of the examples suggest that following code should work
>
>> mod = EnsureModule(...)
>
>> class MyEvents(mod.IDocumentEvents):
>>    # your methods here....
>
>> handler = MyEvents(ie.document)
>
>> # handler should start recieving events.
>
> however, what CLSID is to be used in EnsureModule... . I tried with a
> few but I always get the error 'NoneType' object has no attribute
> 'IDocumentEvents'
>
>
> An example that 'works' will be very useful
> 



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From bwooster47 at gmail.com  Fri May 13 14:10:44 2005
From: bwooster47 at gmail.com (bwooster47 at gmail.com)
Date: 13 May 2005 11:10:44 -0700
Subject: Safe eval, or how to get list from string
References: <1115999726.286709.140690@f14g2000cwb.googlegroups.com>
	<mailman.44.1116006195.29328.python-list@python.org>
Message-ID: <1116007844.564530.178880@g43g2000cwa.googlegroups.com>

> http://twistedmatrix.com/users/moshez/unrepr.py
> http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/364469

Thanks, this helps - but I was looking at using no additional modules,
or using something that came bundled in with python 2.3

I just discovered mx.Tools.NewBuiltins

It has something called "reval" looks that would fit my needs
perfectly.

Details:
http://www.faqts.com/knowledge_base/view.phtml/aid/4550/fid/538



From cpu.crazy at gmail.com  Thu May 19 09:27:57 2005
From: cpu.crazy at gmail.com (CPUFreak91)
Date: 19 May 2005 06:27:57 -0700
Subject: Looking for bored python newbies
In-Reply-To: <1116423151.573145.57920@f14g2000cwb.googlegroups.com>
References: <1116423151.573145.57920@f14g2000cwb.googlegroups.com>
Message-ID: <1116509277.692297.105480@f14g2000cwb.googlegroups.com>

Never mind.... this was a stupid question



From fphsml at gmail.com  Fri May  6 13:06:17 2005
From: fphsml at gmail.com (James)
Date: 6 May 2005 10:06:17 -0700
Subject: Python at MS Event!
In-Reply-To: <1115372480.804865.277680@o13g2000cwo.googlegroups.com>
References: <1115344056.135846.153730@f14g2000cwb.googlegroups.com>
	<1115372480.804865.277680@o13g2000cwo.googlegroups.com>
Message-ID: <1115399177.605466.108770@o13g2000cwo.googlegroups.com>

Standard. 2.4.x



From dstcruz at gmail.com  Tue May 10 14:32:39 2005
From: dstcruz at gmail.com (Daniel  Santa Cruz)
Date: 10 May 2005 11:32:39 -0700
Subject: Put a file on an ftp server over ssl
In-Reply-To: <mailman.308.1115746590.29826.python-list@python.org>
References: <1115744132.371147.3240@o13g2000cwo.googlegroups.com>
	<mailman.308.1115746590.29826.python-list@python.org>
Message-ID: <1115749959.870607.20720@o13g2000cwo.googlegroups.com>

I looked briefly at this option, but it seems to me that I would have
to learn a whole architecture just to put a file on an ftp server.
Seems like a bit much, don't you think?

Daniel



From Bernd.Nawothnig at t-online.de  Sun May  8 07:20:17 2005
From: Bernd.Nawothnig at t-online.de (Bernd Nawothnig)
Date: Sun, 8 May 2005 13:20:17 +0200
Subject: global lists
References: <mailman.163.1115546470.29826.python-list@python.org>
Message-ID: <h891l2-lre.ln1@Bernd.Nawothnig.dialin.t-online.de>

On 2005-05-08, andrea crotti wrote:

> I have a little "problem", I don't understand the reason of this:

> a = [10,1,2,3]
> def foo():
>   global a
>   for el in a:
>     el = el*2

Simple data types (as integer) are _not_ implemented as references as
you obviously expected. Instead el is copied by value from each a[n].
Thus you only changed temporary copies.

The whole list instead _is_ a reference. If you write 

b = a
b[0] = 57

a[0] will be effected too.


> This doesn't make any difference, if I do
> def foo():
>   global a
>   a[0] = 4

That should alter a[0].

> But
>
> def foo():
>   global a
>   for n in range(len(a)):
>     a[n] = a[n]*2
>
> Doesn't work either...

It does. Test it again.



Bernd

-- 
Those who desire to give up freedom in order to gain security,
will not have, nor do they deserve, either one. [T. Jefferson]


From michele.simionato at gmail.com  Wed May 18 10:30:23 2005
From: michele.simionato at gmail.com (Michele Simionato)
Date: 18 May 2005 07:30:23 -0700
Subject: super() and automatic method combination
In-Reply-To: <7xvf5gra9z.fsf_-_@ruckus.brouhaha.com>
References: <7xvf5gra9z.fsf_-_@ruckus.brouhaha.com>
Message-ID: <1116426623.764818.19910@g47g2000cwa.googlegroups.com>

Paul Rubin:
> It would be nice to make some decorators to do CLOS-like > automatic
method combination ...

You can't do that with decorators (I mean the automatic
call of the supermethod) but you can with a metaclass.
There is an example in my ACCU lectures:

http://www.reportlab.org/~andy/accu2005/pyuk2005_simionato_wondersofpython.zip

You can also define a custom super that
does not give an error when the superclass doesn't have the
corresponding method (I posted an example
some time ago to somebody complaining for the same reason).

               Michele Simionato



From littlejohn.75 at news.free.fr  Wed May 11 16:24:15 2005
From: littlejohn.75 at news.free.fr (F. Petitjean)
Date: 11 May 2005 20:24:15 GMT
Subject: Python Documentation (should be better?)
References: <d5tjng$kae$1@sea.gmane.org>
	<mailman.390.1115838298.29826.python-list@python.org>
	<d5to4d$895$1@solaris.cc.vt.edu>
Message-ID: <428269ef$0$7926$636a15ce@news.free.fr>

Le Wed, 11 May 2005 15:58:04 -0400, rbt a ?crit :
> Christopher J. Bottaro wrote:
> Because PHP is such a 'thrown together' and 'bolted-on' language. If it 
> didn't have *outstanding* documentation (which it does BTW), no one 
> could even begin to understand how they got from a little HTML language 
> to a kinda/sorta OO language.

+1 QOTW


From http  Sat May 28 15:17:39 2005
From: http (Paul Rubin)
Date: 28 May 2005 12:17:39 -0700
Subject: Help with choice of suitable Architecture
References: <1117299643.380598.5540@g47g2000cwa.googlegroups.com>
Message-ID: <7x7jhj2m98.fsf@ruckus.brouhaha.com>

"Rob Cowie" <cowie.rob at gmail.com> writes:
> I have been asked (as part of an MSc project) to create a server based
> planner for a research group at my uni. It will have a web interface to
> interact with data stored in an XML document. 

Why not just a regular database?

> Basic functionality is required such as viewing, searching, editing,
> creating and deleting entries for things such as paper submission
> deadlines, events, funding application deadlines. I would also like
> to use AJAX principles in the web interface.

Yecch, just use standard HTML, don't depend on client scripting
without a concrete good reason.  It makes stuff more confusing for
both human and automated users, and makes people weaken their browser
security by enabling scripting.  That stuff went out of style with
pop-up ads.

> Additionaly, it must email a BibTex file once a month to a
> predetermined address.

That's no big deal.

> I'm totally new to web programming. I have been looking into the best
> way to proceed. CGI is of course an option but it seems slow, clunky
> and outdated. Twisted provides a rich architecture but might be
> overkill. Nevow seems to be very popular.

CGI is conceptually the simplest, but leaves you needing to do a bunch
of stuff yourself.  A database back end helps a lot in dealing with
concurrent updates.  There's a bunch of other Python web frameworks
too (Spyce, CherryPy, Zope, ...).

For a generic overview, you might look at the now-somewhat-outdated
book "Philip and Alex's Guide to Web Publishing",

    http://philip.greenspun.com/panda/


> I suspect I could achieve what I want using PHP but I would really like
> to get to grip with Python.

If the goal is simply to get to the finish line, PHP might get you
there faster for something like this.  If it's an academic project
where "the journey is the reward" there's lots of things you can try.


From dberlin at gmail.com  Tue May 31 12:37:05 2005
From: dberlin at gmail.com (dberlin at gmail.com)
Date: 31 May 2005 09:37:05 -0700
Subject: Seti-like program
In-Reply-To: <mailman.292.1117548741.18027.python-list@python.org>
References: <mailman.292.1117548741.18027.python-list@python.org>
Message-ID: <1117557425.074745.271600@g49g2000cwa.googlegroups.com>

Other examples- PCAnyWhere, a Trojan Horse .. :)

Anyway, this is quite simple.
All you realy need is a server with a GUI that listens all the time for
incoming connections,
and a client that will connect to the server and work in the
background.

Here are some thoughts...

    - Figure out what action you want the client to do. Make sure you
have a working script that does that already, that could later be
connected to the actual client.
    - How much control do you need over the client? do you want to just
send commands and see the result? or do you want to recieve
screenshots, or even "live" view of the client?



From bdesth.quelquechose at free.quelquepart.fr  Thu May 26 17:06:34 2005
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Thu, 26 May 2005 23:06:34 +0200
Subject: staticmethod and classmethod
In-Reply-To: <d6v2s5$blp$1@ucsnew1.ncl.ac.uk>
References: <d6v2s5$blp$1@ucsnew1.ncl.ac.uk>
Message-ID: <42963525$0$10289$636a15ce@news.free.fr>

C Gillespie a ?crit :
> Hi,
> 
> Does anyone know of any examples on how (& where) to use staticmethods and
> classmethods?
> 

Here's an example from a ldap lib (work in progress, not finished, and 
all other disclaimers).

The class methods are here:

# ----------------------------------------------------------------------
# Base class for LDAP Objects
# ----------------------------------------------------------------------
class LdapObject(object):
     """
     Base class for LDAP data objects.
     """

(snip)

     # ------------------------------------------------------------------
     def query_class(cls):
         return "(objectClass=%s)" % cls.query_object_class
     query_class = classmethod(query_class)

     # ------------------------------------------------------------------
     def query_id(cls, ldap_id):
         return "(& %s (%s=%s))" % (cls.query_class(), cls.id_attribute, 
ldap_id)
     query_id = classmethod(query_id)

     # ------------------------------------------------------------------
     def query(cls, filters=None):
         if filters is None:
             return cls.query_class()
         else:
             return cls._decorate_query(filters(cls))
     query = classmethod(query)

     # ------------------------------------------------------------------
     def _decorate_query(cls, query):
         return "(& %s %s)" % (cls.query_class(), query)
     _decorate_query = classmethod(_decorate_query)


class LdapContact(LdapObject):
     """
     Wraps a MozillaAbPersonObsolete/OpenLDAPperson entry.
     """

     # ldap objectClass(es)
     object_classes =('OpenLDAPperson',
                      'MozillaAbPersonObsolete', )

     # which one we'll use for queries
     query_object_class = 'MozillaAbPersonObsolete'
     id_attribute =  'uid'
     sort_keys = ('displayName',)

(snip)


They are used here (LdapItemKlass is supposed to be a subclass of 
LdapObject, like LdapContact above):

# ----------------------------------------------------------------------
# The LdapConnection itself.
# ----------------------------------------------------------------------
class LdapConnection(object):

(snip)

     # ------------------------------------------------------------------
     def list_items(self, ldapItemKlass, sort_keys=None,
                   filters=None):
         items = [ldapItemKlass(self, entry) \
                  for entry in self._search( \
                     ldapItemKlass.query(filters, match_op) \
                 )]
         if sort_keys is None:
             sort_keys = ldapItemKlass.sort_keys
         return self.sort(items, sort_keys)

     # ------------------------------------------------------------------
     def get_item(self, ldapItemKlass, ldap_id):
         entry = self._get_item(ldapItemKlass, ldap_id)
         if entry is not None:
             entry = ldapItemKlass(self, entry)
         return entry

(snip)


And client code may look like this (LdapContact being a subclass of 
LdapObject):

cnx = LdapConnection(...).connect()
all_contacts = cnx.list_items(LdapContact)
someone = cnx.get_item(LdapContact, 'uid=someone')


Since we don't have any instance before running the query, we can't use 
instance methods... Still, most of the knowledge required to build the 
appropriate query belongs to the LdapContact (or whatever) class.

HTH
Bruno


From silver_lily at rediffmail.com  Thu May 19 00:40:56 2005
From: silver_lily at rediffmail.com (silver lily)
Date: 19 May 2005 04:40:56 -0000
Subject: mac python on tiger
Message-ID: <20050519044056.32054.qmail@webmail29.rediffmail.com>

Hi,
I have recently installed tiger on my mac computer. After the installation, I have been unable to launch python IDE or package manager (the icons bounce on the dock for a while and then crash). IDLE is working so far, however, none of the GUI script are working and I am also not able to open more than one IDLE editor windows at a time.

I have already deleted the Python 2.4 binaries that came with the installation for tiger, so I know it is not a linking error. Is there something I am missing here.

Thanks,
Silver
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From onurb at xiludom.gro  Wed May 25 11:41:20 2005
From: onurb at xiludom.gro (bruno modulix)
Date: Wed, 25 May 2005 17:41:20 +0200
Subject: Using properties
In-Reply-To: <1117029966.799908.183830@f14g2000cwb.googlegroups.com>
References: <1117029966.799908.183830@f14g2000cwb.googlegroups.com>
Message-ID: <42949ca2$0$6501$636a15ce@news.free.fr>

tkpmep at hotmail.com wrote:
> I have a class with a name attribute, which I want to modify using
> property.The following code works just fine:
> 
> class Portfolio(object):
> 
>     def __init__( self, name="Port1"):
>         self.name=name

This may not do what you think it does (see below)

> 
>     def getname(self):
>         return self._name
>     def setname(self,newname="Port2"):
>         self._name=newname
> 
>     name=property(getname,setname,None,None)
> 
> However, it no longer works if I modify getname and setname to
> 
>     def getname(self):
>         return self.name
> 
>     def setname(self,newname="Port2"):

what's the use of putting a default value here ?

>         self.name=newname

How could this work, since self.name is now a property object that calls
 on setname() and getname() ?

> Why is it so critical to have getname and setname modify _name and not
> name? 

because 'name' is how you named your property...

> The constructor does not make name a private attribute, 

Note that there is in fact no notion of private/public in Python (I mean
: in the language). The underscore stuff is nothing more than a convention.

Now you don't seem to understand what happens when __init__ is called.
Try this:

8<------------------------------------------------
class Portfolio(object):

    def __init__( self, name="Port1"):
        self.name=name
        print "self._name is %s" % self._name
        print "self.__class__.name is %s" % self.__class__.name

    def _getname(self):
        print "in getname"
        return self._name

    def _setname(self, newname):
        print "in setname"
        try:
            print "self._name is %s" % self._name
        except AttributeError, e:
            print "got AttributeError %s" % e
            print "when trying to access self._name"
        self._name=newname

    name=property(fget=_getname, fset=_setname)
    print "in Portfolio class definition : name is %s" % name

p = Portfolio()
8<------------------------------------------------

As you can see, the 'name=property(...)' statement at the end of your
class definition is executed when the class definition is first eval'd
(this is when the code is loaded in the interpreter). So when __init__
is called, the statement 'self.name = name' does not create an instance
variable 'name', but calls the existing property, which in turn creates
the instance variable '_name'.

> so why do
> getname and setname have to treat it as such?

>From a technical POV, we don't care if the attribute accessed by a
property is 'private' or whatever. The only thing is that it can't have
the same name as the property...

>From a conceptual POV, it makes no sense (well, IMHO) to use a property
for a 'public' (by convention...) attribute. Either you want a property
(think : a computed attribute) and then you hide the implementation
details, or you're ok with a plain old 'public' attribute and then you
don't use a property.

BTW, this is also true of the setter and getter used by the property:
they are implementation details, and as such should not be exposed as
part of the interface.

HTH
-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From chris at keristor.net  Thu May 19 17:34:14 2005
From: chris at keristor.net (Chris Croughton)
Date: Thu, 19 May 2005 22:34:14 +0100
Subject: Comparing 2 similar strings?
References: <24a6d$428b9c10$d1b717f8$2300@PRIMUS.CA>
	<428BA05D.1010600@lsupcaemnt.com>
	<3d9n815cpmavos1fl6ts712h9qogdv3fur@4ax.com>
	<tOydnZJPi5FmeBbfRVn-3A@comcast.com>
	<ukqn811uo3qaa5lpihfq1fu71auuslel10@4ax.com>
	<wOSdnW21Bo1qlBHfRVn-uQ@comcast.com>
	<153o811mt7uhqa3aojb5101sd7qo4jrgps@4ax.com>
	<pan.2005.05.19.15.47.09.713982@REMOVETHIScyber.com.au>
Message-ID: <slrnd8q1im.9kq.chris@ccserver.keris.net>

On Fri, 20 May 2005 01:47:15 +1000, Steven D'Aprano 
   <steve at REMOVETHIScyber.com.au> wrote:

> On Thu, 19 May 2005 14:09:32 +1000, John Machin wrote:
> 
>> None of the other approaches make the mistake of preserving the first
>> letter -- this alone is almost enough reason for jettisoning soundex.
> 
> Off-topic now, but you've made me curious.
> 
> Why is this a bad idea?

Why is the first letter any more important than any other?

> How would you handle the case of "barow" and "marow"? (Barrow and
> marrow, naturally.) Without the first letter, they sound identical. Why is
> throwing that information away a good thing?

Well, Soundex will quite possibly throw the information away anyway,
certainly it regards several letters as the same.  But why is the
difference between barrow and marrow more important than that between
help and held?  Or between hatter and hammer?

Regarding 'agains' as similar to 'iguanas' and 'Utahns', but not to
'again' or 'against', is silly...

Chris C


From eurleif at ecritters.biz  Mon May 23 06:08:25 2005
From: eurleif at ecritters.biz (Leif K-Brooks)
Date: Mon, 23 May 2005 10:08:25 GMT
Subject: what is addMethod ?
In-Reply-To: <1116841257.937815.61910@g43g2000cwa.googlegroups.com>
References: <1116841257.937815.61910@g43g2000cwa.googlegroups.com>
Message-ID: <tYhke.8301$5I5.708829@newshog.newsread.com>

qwejohn at hotmail.com wrote:
>    I saw some python open source project with many
> self.addMethod() functions (with 3 paramters)
> 
> What does self.addMethod() is good for ?

It's not a standard method, so it's good for whatever the particular
class you were looking at was using it for. We might be able to tell you
more if you mentioned the specific script you saw it used in.


From tzot at sil-tec.gr  Wed May 11 10:45:21 2005
From: tzot at sil-tec.gr (Christos TZOTZIOY Georgiou)
Date: Wed, 11 May 2005 17:45:21 +0300
Subject: Python or PHP?
References: <1114254894.512656.297040@l41g2000cwc.googlegroups.com>
	<Xns9643D18CC9239devnulljoreybumpcom@199.45.49.11>
Message-ID: <rj6481ht173ndghg9oj48tj83dlifecgaq@4ax.com>

On Tue, 26 Apr 2005 00:35:59 GMT, rumours say that Jorey Bump
<devnull at joreybump.com> might have written:

>"Lad" <python at hope.cz> wrote in news:1114254894.512656.297040
>@l41g2000cwc.googlegroups.com:
>
>> Is anyone capable of providing Python advantages over PHP if there are
>> any?


>As you learn Python, you will find that your PHP code will improve, 
>possibly becoming more and more concise until it disappears completely.

+1 QOTW
-- 
TZOTZIOY, I speak England very best.
"Be strict when sending and tolerant when receiving." (from RFC1958)
I really should keep that in mind when talking with people, actually...


From newsgroups at jhrothjr.com  Tue May 31 12:19:14 2005
From: newsgroups at jhrothjr.com (John Roth)
Date: Tue, 31 May 2005 10:19:14 -0600
Subject: The need to put "self" in every method
References: <1117554344.938440.54700@g14g2000cwa.googlegroups.com>
Message-ID: <119p3k7srooeu91@news.supernews.com>

"Fernando M." <fernandomirandamuro at gmail.com> wrote in message 
news:1117554344.938440.54700 at g14g2000cwa.googlegroups.com...
> Hi,
>
> i was just wondering about the need to put "self" as the first
> parameter in every method a class has because, if it's always needed,
> why the obligation to write it? couldn't it be implicit?
>
> Or is it a special reason for this being this way?

There are two different issues.

1. If self was made a keyword, there would be no need for
it in the method header. However, that would be a major
incompabible change affecting almost every script in existance.
Also some people use other words than self. (It would,
by the way, result in a performance improvement.)

2. There's been some talk of making the '.' operator allow an
implied instance. I'm not sure what the status of this is.

These two are actually separate issues; either could be
done without the other.

John Roth

> Thanks.
> 



From sjmachin at lexicon.net  Thu May 19 20:02:16 2005
From: sjmachin at lexicon.net (John Machin)
Date: Fri, 20 May 2005 10:02:16 +1000
Subject: problem uploading ZIP file tp PyPI
References: <ECBA357DDED63B4995F5C1F5CBE5B1E802E59C94@its-xchg4.massey.ac.nz>
	<mailman.234.1116545288.8733.python-list@python.org>
Message-ID: <al9q819kp0kta0mm26ej0fl04cohi51ssn@4ax.com>

On Fri, 20 May 2005 11:28:14 +1200, "Tony Meyer" <t-meyer at ihug.co.nz>
wrote:

>>>>>> setup.py sdist --format=zip
>>>>>
>>>>> Try without the --format arg. The code is being too paranoid.
>>>>
>>>> Oh, so even without --format, a ZIP source dist file is produced 
>>>> anyway? If this is the case, please file a bug against PyPI.
>>>
>>> How is this a bug?  sdist is meant to produce a zip file on 
>>> Windows if --format isn't used.  If "upload" overrides this for some 
>>> reason, then the documentation should say so (and, IMO, it would be a 
>>> mistake for that to be the case).
>> 
>> It's a bug against PyPI, not distutils.
>
>Did you mean that the bug is that PyPI won't accept a zipped source
>distribution?  To me, your message read like it was saying that (distutils)
>producing a zip source distribution file without --format was a bug.
>
>So (if the former is what you meant) would a workaround for now be to do
>something like:
>
>  setup.py sdist --format=gztar upload

(1) error: command 'tar' failed: No such file or directory

(2) error: invalid command 'upload'


FYI, there are a few unreconstructed diehards out here who neither run
on a *x platform nor run bleeding-edge Python straight out of last
night's CVS.

Viz: Python 2.4.1 (#65, Mar 30 2005, 09:13:57) [MSC v.1310 32 bit
(Intel)] on win32


From guettli at thomas-guettler.de  Thu May 19 11:22:31 2005
From: guettli at thomas-guettler.de (Thomas Guettler)
Date: Thu, 19 May 2005 17:22:31 +0200
Subject: Twisted an several CPUs
Message-ID: <pan.2005.05.19.15.22.30.611015@thomas-guettler.de>

Hi,

Out of sheer curiosity:

Does Twisted scale if the server has several CPUs?

As far as I know twisted uses one interpreter. This
means a prefork server modul might be better to
server database driven web-apps.

Has anyone experience high load and twisted?

 Thomas

-- 
Thomas G?ttler, http://www.thomas-guettler.de/




From tugwilson at gmail.com  Wed May 25 07:54:40 2005
From: tugwilson at gmail.com (John Wilson)
Date: Wed, 25 May 2005 12:54:40 +0100
Subject: Number 1 can't use!
In-Reply-To: <20050523031506.1766.qmail@web15004.mail.cnb.yahoo.com>
References: <mailman.432.1116774302.21603.python-list@python.org>
	<20050523031506.1766.qmail@web15004.mail.cnb.yahoo.com>
Message-ID: <a9f4d96f05052504543c138f95@mail.gmail.com>

On 5/23/05, <????> <bbcofchina at yahoo.com.cn> wrote:
> After I installed python 2.4.1 , I found my keyborad Number  1 can't
> work,but ! is still working


How did you type the message then ;)

From mddotpainter at sbcglobal.net  Sun May 15 02:48:19 2005
From: mddotpainter at sbcglobal.net (Mike Painter)
Date: Sun, 15 May 2005 06:48:19 GMT
Subject: space saving retitle of thread
References: <1116096706.696830.275140@g44g2000cwa.googlegroups.com>
	<Etvhe.1353573$8l.349001@pd7tw1no>
	<1116112436.708034.81770@g44g2000cwa.googlegroups.com>
Message-ID: <TgChe.17018$J12.8038@newssvr14.news.prodigy.com>

Johnny Gentile wrote:
> aahhhh.....

I just added a second monitor and have over two feet of monitor as 1280 x 
1024.
Outlook expands this message and it still runs off the right side of the 
second monitor. 




From austin at maxtronic.com.tw  Mon May 30 23:51:58 2005
From: austin at maxtronic.com.tw (austin)
Date: Tue, 31 May 2005 11:51:58 +0800
Subject: wxTextCtrl problem
Message-ID: <d7gmte$59l$1@netnews.hinet.net>

I produced 5 wxTextCtrl.
My program is to let the user enter the serial number.
Each wxTextCtrl has 4 maxlength.
My ideal is
if the user enter 4 digits on first wxTextCtrl, and the program will move
the cursor to the second wxTextCtrl.
I checked the wxTextCtrl::SetInsertingPoint.
But this function is only move on itself.
For exammple,

xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

....
....

self.tctrl_1 = wxTextCtrl(......)
self.tctrl_2 = wxTextCtrl(......)

self.Bind(EVT_TEXT,self.OnTextProcessing_1,self.tctrl_1)
self.Bind(EVT_TEXT,self.OnTextProcessing_2,self.tctrl_2)

....
....

def OnTextProcessing_1(self,evt):
 if len(evt.GetString())==4:
  self.tctrl_2.SetInsertionPoint(0)

xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx


The code "self.tctrl_2.SetInsertingPoint(0)" doesn't work.
But if i change to "self.tctrl_1..." works fine.

So what's problem?





From Bernd.Nawothnig at t-online.de  Mon May 16 03:03:56 2005
From: Bernd.Nawothnig at t-online.de (Bernd Nawothnig)
Date: Mon, 16 May 2005 09:03:56 +0200
Subject: German spam event [was: Re: Schily ueber Deutschland]
References: <mailman.22.1116170676.15315.python-list@python.org>
	<hpfkl2-303.ln1@Bernd.Nawothnig.dialin.t-online.de>
	<7x3bso6y4c.fsf@ruckus.brouhaha.com>
	<mailman.16.1116207715.8733.python-list@python.org>
Message-ID: <s7tll2-qe9.ln1@Bernd.Nawothnig.dialin.t-online.de>

On 2005-05-16, Fran?ois Pinard wrote:

>> I don't think that post was really from MAL.  It seems to be a
>> sporgery attack on the newsgroup.  Sigh.

> For the last two days, I receive quite an amount of robotic rejects,
> after my name was used as the forged From:

Same with me after my follow-up.

[...]

> Such forged From appears all the time as far as I am concerned, and
> had for years now.  But something significant happened this weekend.

Looks like another windows worm. Now they seem to come with a more
sofisticated 'payload'. I am sure that will increase in the future.
It is just the beginning ...



Bernd

-- 
Software is like sex: it's better when it's free [Linus Torvalds]


From none at example.net  Wed May 11 20:54:02 2005
From: none at example.net (Chuck)
Date: 11 May 2005 19:54:02 -0500
Subject: Ron Grossi The Troll Is Back
References: <1115824563.613661.169620@g47g2000cwa.googlegroups.com>
Message-ID: <e2a5811vpdia2bf3cnmk8n86jllsdb5onj@4ax.com>

Abuse reports to
groups-abuse at google.com,groups-support at google.com,abuse at aol.com,ToSReports at AOL.Com,tosusenet at aol.com,ToSGeneral at Aol.com,mail-abuse at cc.yahoo-inc.com,spam at uce.gov


From xah at xahlee.org  Sat May  7 01:45:26 2005
From: xah at xahlee.org (Xah Lee)
Date: 6 May 2005 22:45:26 -0700
Subject: New Python regex Doc (was: Python documentation moronicities)
In-Reply-To: <1115423751.016177.250650@o13g2000cwo.googlegroups.com>
References: <1113301533.054410.203710@z14g2000cwz.googlegroups.com>
	<mailman.1813.1113355346.1799.python-list@python.org>
	<1113856843.023012.165500@l41g2000cwc.googlegroups.com>
	<1113908069.264676.207090@g14g2000cwa.googlegroups.com>
	<1115328523.852744.110390@f14g2000cwb.googlegroups.com>
	<1115423751.016177.250650@o13g2000cwo.googlegroups.com>
Message-ID: <1115444726.627426.172260@g14g2000cwa.googlegroups.com>

erratum:

the correct URL is:
http://xahlee.org/perl-python/python_re-write/lib/module-re.html

 Xah
 xah at xahlee.org
? http://xahlee.org/



From bdelmee at advalvas.REMOVEME.be  Wed May 18 12:41:37 2005
From: bdelmee at advalvas.REMOVEME.be (=?ISO-8859-15?Q?Bernard_Delm=E9e?=)
Date: Wed, 18 May 2005 18:41:37 +0200
Subject: python 2.3 + cx_oracle on HP-UX Itanium
Message-ID: <428b7064$0$1825$6c56d894@reader0.news.be.easynet.net>

Hello,

because we are migrating to an Itanium HP-UX server,
I will shortly need to compile python 2.3 and cx_oracle
on that platform. I seem to recall people having problem
compiling python on HP-UX in general, and am interested
in opinions about which compiler to use. Should I require
the HP compiler, or is gcc known to work for this purpose ?

Thanks for any hint,

Bernard.


From steven.bethard at gmail.com  Fri May 20 21:38:56 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Fri, 20 May 2005 19:38:56 -0600
Subject: passing arguments
In-Reply-To: <mailman.266.1116629225.8733.python-list@python.org>
References: <200505201826.09939.jeffelkins@earthlink.net>
	<mailman.266.1116629225.8733.python-list@python.org>
Message-ID: <mIOdnbfCkYmuDBPfRVn-vA@comcast.com>

James Stroud wrote:
> import sys
> 
> try:
>   arg1 = sys.argv[1]
> except IndexError:
>   print "This script takes an argument, you boob!"
>   sys.exit(1)

Also possible, to guarantee that exactly one argument was given:

try:
   arg1, = sys.argv
except ValueError:
   print "This script takes an argument, you boob!"
   sys.exit(1)

If you want to get, say, 3 arguments, just change that line to:

   arg1, arg2, arg3 = sys.argv

> OR, way better: See the optparse module.

Definitely.  Though depending on what kind of arguments your script 
takes, you still may need to deal with the args that optparse returns.

STeVe


From greg at cosc.canterbury.ac.nz  Fri May 27 00:20:55 2005
From: greg at cosc.canterbury.ac.nz (Greg Ewing)
Date: Fri, 27 May 2005 16:20:55 +1200
Subject: Just remember that Python is sexy
In-Reply-To: <Xns96625FD0B248duncanbooth@127.0.0.1>
References: <1116899839.323185.58350@g49g2000cwa.googlegroups.com>
	<O9v*jQrPq@news.chiark.greenend.org.uk>
	<v8adndXwp-hF4gnfRVn-ig@powergate.ca>
	<du7is16wiug.fsf@mozart.cc.tut.fi>
	<Xns96625FD0B248duncanbooth@127.0.0.1>
Message-ID: <3fnlhlF8caf9U1@individual.net>

Duncan Booth wrote:

> The name index implies it returns something you can use as an index to get 
> at the substring.

But that's no fun -- it doesn't involve sex!

How about this: "index" and "sex" both end with "ex", which
is short for "exception".

(Of course, you could get straight from "index" to "exception"
that way too, but then there wouldn't be any excuse for
mentioning sex. :-)

-- 
Greg Ewing, Computer Science Dept,
University of Canterbury,	
Christchurch, New Zealand
http://www.cosc.canterbury.ac.nz/~greg


From could.net at gmail.com  Sat May 21 06:04:52 2005
From: could.net at gmail.com (could ildg)
Date: Sat, 21 May 2005 18:04:52 +0800
Subject: ANN: new release of RUR-PLE available
In-Reply-To: <d6l0ff$rvs$1@sea.gmane.org>
References: <mailman.181.1116468097.8733.python-list@python.org>
	<d6kmcp$9dj$1@gemini.csx.cam.ac.uk> <d6l0ff$rvs$1@sea.gmane.org>
Message-ID: <311b5ce10505210304181a30b1@mail.gmail.com>

It's very interestring,
I like it.
On 5/20/05, Andr? Roberge <andre.roberge at gmail.com> wrote:
> Michael Hoffman wrote:
> > Andr? Roberge wrote:
> >
> >>Version 0.8.6a is now available.
> >
> >
> > You might see a bit more interest if you briefly explain what RUR-PLE
> > is, and where to find it.
> Oops.. sorry about that.
> 
> RUR - a Python Learning Environment.
> Its purpose is to provide an environment where people with no prior
> experience can learn computer programming (using Python of course!).
> 
> RUR-PLE currently requires that both Python and wxPython be installed.
> More information can be found at http://rur-ple.sourceforge.net
> 
> --
> http://mail.python.org/mailman/listinfo/python-list
>


From hsml at lycos.de  Sat May 14 09:59:05 2005
From: hsml at lycos.de (Harald Schmidt)
Date: Sat, 14 May 2005 15:59:05 +0200
Subject: function with variable arguments
References: <1115977954.266898.141150@g49g2000cwa.googlegroups.com>
	<pan.2005.05.13.12.10.09.18787@internode.on.net>
	<1116067288.070061.286480@g43g2000cwa.googlegroups.com>
Message-ID: <d65071$hqp$1@online.de>

Xah Lee wrote:

> I think it would be a improvement for the built-in range() so that step
> needs not be an integer. [...]
>
> Range( 5, 7, 0.3); # returns [5, 5.3, 5.6, 5.9, 6.2, 6.5, 6.8]

This may not return what you expect it to return.

For example let's use a naive implementation like this:

def Range(start, stop, step):
  values = []
  while start < stop:
    values.append(start)
    start += step
  return values

The result is:
>>> Range(5, 7, 0.3)
[5, 5.2999999999999998, 5.5999999999999996, 5.8999999999999995,
6.1999999999999993, 6.4999999999999991, 6.7999999999999989]

Worse: Range(5, 7.1, 0.3) would return 8 values, not 7 as expected from e.g.
range(50, 71, 3).

Welcome to the interesting world of floating point numbers.

 Harald



From flamesrock at gmail.com  Tue May  3 12:41:37 2005
From: flamesrock at gmail.com (flamesrock)
Date: 3 May 2005 09:41:37 -0700
Subject: python+windows/linux -> write stdout text to always on top text?
In-Reply-To: <mailman.87.1115114454.6583.python-list@python.org>
References: <1115064842.454916.305970@f14g2000cwb.googlegroups.com>
	<mailman.87.1115114454.6583.python-list@python.org>
Message-ID: <1115138497.567243.308570@z14g2000cwz.googlegroups.com>

I'm writing a multiplayer component to an existing closed source game,
and I'd like users to be able to see whats going on in the chat while
playing the game.

Is it possible?



From brian at sweetapp.com  Thu May 12 11:41:29 2005
From: brian at sweetapp.com (Brian Quinlan)
Date: Thu, 12 May 2005 17:41:29 +0200
Subject: Interactive shell for demonstration purposes
In-Reply-To: <4282ff44.1317299666@news.oz.net>
References: <1115814028.259365.98710@g49g2000cwa.googlegroups.com>	<mailman.347.1115815769.29826.python-list@python.org>	<du78y2l5137.fsf@lehtori.cc.tut.fi>	<mailman.359.1115821284.29826.python-list@python.org>
	<4282ff44.1317299666@news.oz.net>
Message-ID: <42837929.1020605@sweetapp.com>

Bengt Richter wrote:
> If you make your console 96 wide and set the font to Lucida Console Bold 24point,
> it will probably expand to near full screen on 1024x768. You can set the scroll buffer
> to a couple hundred lines and adjust console widow height to suit. Use the properties
> from the system icon, or get there by Alt-Space P etc.

That's not bad. There are two caveats:
1. you have to set the width to 72 characters (instead of 80) at
    1024x768 with 24 point fonts
2. you can't run in full-screen mode

Cheers,
Brian


From mkb at incubus.de  Tue May 24 14:13:52 2005
From: mkb at incubus.de (Matthias Buelow)
Date: Tue, 24 May 2005 20:13:52 +0200
Subject: What are OOP's Jargons and Complexities?
In-Reply-To: <878y24yhst.fsf@ivanova.rotty.yi.org>
References: <1116843761.619249.144790@g47g2000cwa.googlegroups.com>
	<bAske.14563$yx.14338@fe08.lga> <3584469.Aerji1NdQr@yahoo.com>
	<3cWdnbtAM6aZ6g_fRVn-2w@rcn.net>
	<878y24yhst.fsf@ivanova.rotty.yi.org>
Message-ID: <3fh93fF7set5U1@news.dfncis.de>

Andreas Rottmann wrote:

> You get terminology totally wrong here. As already said, Lisp is
> stronger typed than C, but C is statically typed, whereas Lisp is
> dynamically typed. In Lisp (or Scheme), all variables have types:
> 
> (define foo #(1 2 3))
> (vector? foo) => #t
> (boolean? foo) => #t

Hmm.. weird Scheme you're using here.
Normally you have to quote the vector (see R5RS, 6.2.6) because it is
not self-evaluating, and boolean? should not return true on vectors (6.3.1).

I get (on scheme48):

(define foo '#(1 2 3))
(vector? foo)  => #t
(boolean? foo) => #f


mkb.


From usenet at datahansa.com  Mon May 23 17:04:13 2005
From: usenet at datahansa.com (Oleg Paraschenko)
Date: 23 May 2005 14:04:13 -0700
Subject: Comparing 2 similar strings?
References: <24a6d$428b9c10$d1b717f8$2300@PRIMUS.CA> <428c0d21$1@nntp0.pdx.net>
Message-ID: <de21d442.0505231304.60fc6da5@posting.google.com>

Hello,

Scott David Daniels <Scott.Daniels at Acm.Org> wrote in message
news:<428c0d21$1 at nntp0.pdx.net>...
> William Park wrote:
> > How do you compare 2 strings, and determine how much they are "close" to
> > each other?  
> 
> Here's a really weird idea:  Measure the size difference between the
> pair of strings compressed together and compressed separately.
> 
  The idea isn't weird. The only problem is that naive approach
failed. compress(a,b) != compress(b,a). Having an assumption
that compressing is a good approximation for the Kolmogorov
complexity, the correct formula is a bit more complicated.

-- 
olpa@  http://datahansa.com/  XML publishing and documentation management
http://uucode.com/blog/  Generative Programming, XML, TeX, Scheme


From mefjr75 at hotmail.com  Sat May 14 16:25:55 2005
From: mefjr75 at hotmail.com (M.E.Farmer)
Date: 14 May 2005 13:25:55 -0700
Subject: A new to Python question
In-Reply-To: <tsKdnfF2xaKu3BvfRVn-iQ@comcast.com>
References: <1116088663.428932.130860@g43g2000cwa.googlegroups.com>
	<rfnhl2-ig5.ln1@Bernd.Nawothnig.dialin.t-online.de>
	<1116093118.599403.35940@g14g2000cwa.googlegroups.com>
	<tsKdnfF2xaKu3BvfRVn-iQ@comcast.com>
Message-ID: <1116102355.715816.192840@z14g2000cwz.googlegroups.com>

I said exactly what I meant, the parentheses around the values creates
a tuple that you have no reference to! It also has a side effect of
binding the names inside the tuple to a value and placing them in the
local namespace( implicit tuple unpacking ). It might be the "same" as
no parens but it isn't very clear. If you want a tuple make it
explicit, if you want individual names make it explicit.
>>> def f(q,w,e,r):
...     return q,w,e,r
...
>>> # diff names
>>> a,b,c,d= f(1,2,3,4)# explicit tuple unpacking
>>> dir()
['__builtins__', '__doc__', '__name__', 'a', 'b', 'c', 'd', 'f',
'shell']
>>> del a,b,c,d
>>> # where is the tuple
>>> (a,b,c,d)= f(1,2,3,4)# implicit tuple unpacking !?
>>> dir()
['__builtins__', '__doc__', '__name__', 'a', 'b', 'c', 'd', 'f',
'shell']
>>> del a,b,c,d
>>> # Where is the tuple (a,s,d,f)? There isn't one.
>>> # assign to a single name ( don't do tuple unpacking )
>>> tup=f(1,2,3,4)
>>> dir()
['__builtins__', '__doc__', '__name__', 'f', 'shell', 'tup']
Now there is.
Steve since you are closer to expert than novice you understand the
difference.
I feel this can be confusing to newbies, maybe you disagree.
M.E.Farmer



From cam.ac.uk at mh391.invalid  Wed May  4 19:35:01 2005
From: cam.ac.uk at mh391.invalid (Michael Hoffman)
Date: Thu, 05 May 2005 00:35:01 +0100
Subject: Python FAQ entries (Was: control precision for str(obj) output?)
In-Reply-To: <86wtqf6ruj.fsf_-_@guru.mired.org>
References: <d598rq$8fj$1@joe.rice.edu> <864qdj90vd.fsf@guru.mired.org>
	<pan.2005.05.04.05.26.11.56711@dalkescientific.com>
	<1115186175.778899.48610@f14g2000cwb.googlegroups.com>
	<86wtqf6ruj.fsf_-_@guru.mired.org>
Message-ID: <d5bm78$3ju$1@gemini.csx.cam.ac.uk>

Mike Meyer wrote:

> A quick check of the Python site turns up no discussion on submitting
> new FAQ entries. There are patch submission guidelines, and lots of
> things related to the mailman FAQ, but nothing on how to submit new
> entries for the FAQ.

E-mail webmaster at python.org and docs at python.org.

> Or has the FAQ been supplanted by the wiki at
> www.python.org/moin...

No.
-- 
Michael Hoffman


From rbt at athop1.ath.vt.edu  Tue May 17 14:33:04 2005
From: rbt at athop1.ath.vt.edu (rbt)
Date: Tue, 17 May 2005 14:33:04 -0400
Subject: os.popen vs os.system
In-Reply-To: <DN2dnbQrn7HQqhffRVn-vg@powergate.ca>
References: <d6dasg$32r$1@solaris.cc.vt.edu>
	<DN2dnbQrn7HQqhffRVn-vg@powergate.ca>
Message-ID: <d6ddd0$79a$1@solaris.cc.vt.edu>

Peter Hansen wrote:
  > You can't be doing exactly that, since there are no sockets involved...
> do you mean the above call is executed -- on the receiving end -- after 
> some signal is received via a socket in another part of the code? That's 
> not going to have any effect on things...
> 

Here's the client portion:

import socket
import time

# Prompt user for host IP and port number.
host = raw_input("What IP: ")
port = raw_input("What port: ")

# Strip any whitespace and make sure port is an int.
host = str.strip(host)
port = str.strip(port)
port = int(port)

def msg():
    msg = raw_input("Enter command to send to the server: ")
    msg = str.strip(msg)
    print "\nYou sent:", msg
    return msg

def send(msg):
    ## Send the data to the server.
    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    s.connect((host, port))
    s.send(msg)
    s.close()

send(msg())


From news at NOwillmcguganSPAM.com  Wed May 18 09:46:45 2005
From: news at NOwillmcguganSPAM.com (Will McGugan)
Date: Wed, 18 May 2005 14:46:45 +0100
Subject: Reading image dimensions with PIL
In-Reply-To: <mailman.140.1116420543.8733.python-list@python.org>
References: <428a0f5c$0$13769$db0fefd9@news.zen.co.uk>
	<mailman.140.1116420543.8733.python-list@python.org>
Message-ID: <428b4748$0$20983$db0fefd9@news.zen.co.uk>

Fredrik Lundh wrote:

> the "right" way to do this is to use the ImageFile.Parser class.  see the
> last snippet on this page for an example:
> 
>     http://effbot.org/zone/pil-image-size.htm

Excellent, thanks.

Will


-- 
http://www.willmcgugan.com
"".join( [ {'*':'@','^':'.'}.get(c,None) or chr(97+(ord(c)-84)%26) for c 
in "jvyy*jvyyzpthtna^pbz" ] )


From sjmachin at lexicon.net  Sun May  8 06:35:47 2005
From: sjmachin at lexicon.net (John Machin)
Date: Sun, 08 May 2005 20:35:47 +1000
Subject: Trouble saving unicode text to file
References: <1115500976.571232.76100@z14g2000cwz.googlegroups.com>
	<427DDAA5.9020606@v.loewis.de>
Message-ID: <t4qr71h88us709h4es4oa4fbamnkgkj0sj@4ax.com>

On Sun, 08 May 2005 11:23:49 +0200, "Martin v. L?wis"
<martin at v.loewis.de> wrote:

>Svennglenn wrote:
>> # -*- coding: cp1252 -*-
>> 
>> titel = "???"
>> titel = unicode(titel)
>
>Instead of this, just write
>
># -*- coding: cp1252 -*-
>
>titel = u"???"
>
>> fil = open("testfil.txt", "w")
>> fil.write(titel)
>> fil.close()
>
>Instead of this, write
>
>import codecs
>fil = codecs.open("testfil.txt", "w", "cp1252")
>fil.write(titel)
>fil.close()
>
>Instead of cp1252, consider using ISO-8859-1.

Martin, I can't guess the reason for this last suggestion; why should
a Windows system use iso-8859-1 instead of cp1252?

Regards,
John




From gdamjan at gmail.com  Thu May  5 11:16:59 2005
From: gdamjan at gmail.com (Damjan)
Date: Thu, 05 May 2005 17:16:59 +0200
Subject: a cx_Oracle ORA-01036 problem
References: <427a2b39_2@x-privat.org> <d5das3$682$1@news2.zwoll1.ov.home.nl>
Message-ID: <427a3800_1@x-privat.org>

vincent wehren wrote:
> |        c = db.cursor()
> |        c.execute(SQL, **args)
> 
> 
> Shouldn't that be c.execute(SQL, args) (no **-unpacking of the
> dictionary)?

Actually I tried that too, I still get the same error.

-- 
damjan


From max2 at fisso.casa  Thu May  5 12:35:56 2005
From: max2 at fisso.casa (max(01)*)
Date: Thu, 05 May 2005 16:35:56 GMT
Subject: python and glut
In-Reply-To: <1115236689.318521.111420@z14g2000cwz.googlegroups.com>
References: <kp7ee.1331058$35.49670814@news4.tin.it>
	<1115236689.318521.111420@z14g2000cwz.googlegroups.com>
Message-ID: <MXree.861186$b5.38140938@news3.tin.it>

Lonnie Princehouse wrote:
> See if you can run `glxgears`, and read the output of `glxinfo`.

$ glxgears
Xlib:  extension "GLX" missing on display ":0.0".
Error: couldn't get an RGB, Double-buffered visual
$ glxinfo
name of display: :0.0
Xlib:  extension "GLX" missing on display ":0.0".
Xlib:  extension "GLX" missing on display ":0.0".
Xlib:  extension "GLX" missing on display ":0.0".
Error: couldn't find RGB GLX visual

    visual  x  bf lv rg d st colorbuffer ax dp st accumbuffer  ms  cav
  id dep cl sp sz l  ci b ro  r  g  b  a bf th cl  r  g  b  a ns b eat
----------------------------------------------------------------------
Xlib:  extension "GLX" missing on display ":0.0".
Xlib:  extension "GLX" missing on display ":0.0".
0x21 16 tc  1  0  0 c  .  .  0  0  0  0  0  0  0  0  0  0  0  0 0 None

----

now what?

bye

max


From doodle4 at gmail.com  Thu May 26 17:31:22 2005
From: doodle4 at gmail.com (ashtonn@gmail.com)
Date: 26 May 2005 14:31:22 -0700
Subject: overflowerror!!
Message-ID: <1117143082.825320.131260@g44g2000cwa.googlegroups.com>

Hello,
I am trying to fill in a dword value into an array and i get an
overflowerror

Here's what iam trying to do.

from array import *
data = array('B', '\0' * 256)

val = 0xFFFFFFFF

for i in range(256):
    data[i] = val

print data

How do i fill in the val 256 times into the array?

-Ashton



From python at rcn.com  Thu May 26 03:39:33 2005
From: python at rcn.com (Raymond Hettinger)
Date: 26 May 2005 00:39:33 -0700
Subject: evaluated function defaults: stored where?
References: <gsble.1244$m%3.385@trnddc02><42956DB5.6080302@lexicon.net>
Message-ID: <1117093173.374607.241600@z14g2000cwz.googlegroups.com>

> > Is it unsurprising if I look at it right?

[John Machin's QOTW]
> Yes; in general this is true across many domains for a very large number
> of referents of "it" :-)

There's a Quote of the Week in there somewhere.



From mefjr75 at hotmail.com  Sat May 14 17:59:04 2005
From: mefjr75 at hotmail.com (M.E.Farmer)
Date: 14 May 2005 14:59:04 -0700
Subject: A new to Python question
In-Reply-To: <b_udnX1IuPoi_hvfRVn-hw@comcast.com>
References: <1116088663.428932.130860@g43g2000cwa.googlegroups.com>
	<rfnhl2-ig5.ln1@Bernd.Nawothnig.dialin.t-online.de>
	<1116093118.599403.35940@g14g2000cwa.googlegroups.com>
	<tsKdnfF2xaKu3BvfRVn-iQ@comcast.com>
	<1116102355.715816.192840@z14g2000cwz.googlegroups.com>
	<b_udnUJIuPqb_hvfRVn-hw@comcast.com>
	<b_udnX1IuPoi_hvfRVn-hw@comcast.com>
Message-ID: <1116107944.677219.17980@o13g2000cwo.googlegroups.com>

>It actually is the same, and I don't think implicit or explicit is the
>difference you should be citing here.
Why not it is relevant and true that Python is doing an implicit
unpacking of the values in that unnamed tuple.
Quoting myself """It might be the "same" as
no parens but it isn't very clear. If you want a tuple make it
explicit, if you want individual names make it explicit."""
So as you say, maybe it is is fully a matter of style and apparently I
don't like that style!

>They're both an UNPACK_SEQUENCE byte-code.
I have dissed it myself ;)
My argument, if you can call it that, is that it is not clear that
Python is going to do a tuple unpacking here or not !
You had to dis it to find out and you are not a newbie.
# extra fluff from pyshell
>>> import dis
>>> dis.dis(compile('(x,y,dotp,sumx,maxv) =
abc(x,y,dotp,sumx,maxv)','','exec'))
          0 SET_LINENO               0

          3 SET_LINENO               1
          6 LOAD_NAME                0 (abc)
          9 LOAD_NAME                1 (x)
         12 LOAD_NAME                2 (y)
         15 LOAD_NAME                3 (dotp)
         18 LOAD_NAME                4 (sumx)
         21 LOAD_NAME                5 (maxv)
         24 CALL_FUNCTION            5
         27 UNPACK_SEQUENCE          5
         30 STORE_NAME               1 (x)
         33 STORE_NAME               2 (y)
         36 STORE_NAME               3 (dotp)
         39 STORE_NAME               4 (sumx)
         42 STORE_NAME               5 (maxv)
         45 LOAD_CONST               0 (None)
         48 RETURN_VALUE
>>> dis.dis(compile('x,y,dotp,sumx,maxv =
abc(x,y,dotp,sumx,maxv)','','exec'))
          0 SET_LINENO               0

          3 SET_LINENO               1
          6 LOAD_NAME                0 (abc)
          9 LOAD_NAME                1 (x)
         12 LOAD_NAME                2 (y)
         15 LOAD_NAME                3 (dotp)
         18 LOAD_NAME                4 (sumx)
         21 LOAD_NAME                5 (maxv)
         24 CALL_FUNCTION            5
         27 UNPACK_SEQUENCE          5
         30 STORE_NAME               1 (x)
         33 STORE_NAME               2 (y)
         36 STORE_NAME               3 (dotp)
         39 STORE_NAME               4 (sumx)
         42 STORE_NAME               5 (maxv)
         45 LOAD_CONST               0 (None)
         48 RETURN_VALUE
>>> dis.dis(compile('tup = abc(x,y,dotp,sumx,maxv)','','exec'))
          0 SET_LINENO               0

          3 SET_LINENO               1
          6 LOAD_NAME                0 (abc)
          9 LOAD_NAME                1 (x)
         12 LOAD_NAME                2 (y)
         15 LOAD_NAME                3 (dotp)
         18 LOAD_NAME                4 (sumx)
         21 LOAD_NAME                5 (maxv)
         24 CALL_FUNCTION            5
         27 STORE_NAME               6 (tup)
         30 LOAD_CONST               0 (None)
         33 RETURN_VALUE
>>>
You may notice that the act of assigning the return values to a unnamed
tuple and a name have different semantics and that was the real point.
The problem is why should this be the same:

a,b,c=(1,2,3)

(a,b,c)=(1,2,3)

Seems weird, non-intuitive that a tuple unpacking and tuple creation
have the same bytecode.
So why is this done? What is the reason, I am sure there are a few ;)

p.s. I am leaving out for a while and will read/followup later if
needed. Thank you all for your time. 
M.E.Farmer



From adonisv at DELETETHISTEXTearthlink.net  Fri May 13 22:41:46 2005
From: adonisv at DELETETHISTEXTearthlink.net (Adonis)
Date: Sat, 14 May 2005 02:41:46 GMT
Subject: Python in the news, somewhat
Message-ID: <Kzdhe.299$M36.218@newsread1.news.atl.earthlink.net>

ZDNet has released this article that talks about open source scriptingg 
languages and mentions Python/Jython/IronPython, just wanted to share 
the info.

http://news.zdnet.com/2100-9593_22-5705448.html?tag=st.num

Adonis


From richardjones at optushome.com.au  Mon May 23 01:02:49 2005
From: richardjones at optushome.com.au (richard)
Date: Mon, 23 May 2005 15:02:49 +1000
Subject: problem uploading ZIP file tp PyPI
References: <mailman.232.1116542997.8733.python-list@python.org>
Message-ID: <429163f7$0$5175$afc38c87@news.optusnet.com.au>

Tony Meyer wrote:

>>>>> setup.py sdist --format=zip
>>>>
>>>> Try without the --format arg. The code is being too paranoid.
>>> 
>>> Result: (A) produces a zip file with only minor differences
>>> (presumably a timestamp):
>> 
>> Oh, so even without --format, a ZIP source dist file is
>> produced anyway? If this is the case, please file a bug against PyPI.
> 
> How is this a bug?  sdist is meant to produce a zip file on Windows if
> --format isn't used.  If "upload" overrides this for some reason, then the
> documentation should say so (and, IMO, it would be a mistake for that to
> be the case).

"bug against PyPI". Where did I say bug against distutils?


     Richard



From rbt at athop1.ath.vt.edu  Fri May 20 23:08:27 2005
From: rbt at athop1.ath.vt.edu (rbt)
Date: Fri, 20 May 2005 23:08:27 -0400
Subject: count files in a directory
In-Reply-To: <mailman.276.1116643081.8733.python-list@python.org>
References: <d6m5e1$cr7$1@solaris.cc.vt.edu>
	<mailman.276.1116643081.8733.python-list@python.org>
Message-ID: <d6m8nc$i4v$2@solaris.cc.vt.edu>

James Stroud wrote:
> def count_em(valid_path):
>   root, dirs, files = os.walk(valid_path)
>   return len(files)

Here's another Tback:

 >>> Traceback (most recent call last):
   File "C:\Program 
Files\Python24\Lib\site-packages\pythonwin\pywin\framework\scriptutils.py", line 310, 
in RunScript
     exec codeObject in __main__.__dict__
   File "C:\Documents and Settings\rbt\Desktop\newa\replicate.py", line 62, in ?
     A = count_em(X)
   File "C:\Documents and Settings\rbt\Desktop\newa\replicate.py", line 56, in count_em
     root, dirs, files = os.walk(valid_path)
ValueError: need more than 2 values to unpack



From Florian.Lindner at xgm.de  Wed May  4 07:03:05 2005
From: Florian.Lindner at xgm.de (Florian Lindner)
Date: Wed, 04 May 2005 13:03:05 +0200
Subject: Problem with pyXML DOM
Message-ID: <d5aa59$gtr$03$1@news.t-online.com>

Hello,
I'm using the PyXML Package.

My XML document looks like that:

<visConf>
    <graph name="testgraph1" type="chart">
    <source type="CSV">
        <filename>/home/florian/visualizer/testdata.csv</filename>
    </source>
        
    </graph>
</visConf>

print sourceNode.getElementsByTagName("filename")[0]
print sourceNode.getElementsByTagName("filename")[0].nodeValue()

gives:

<Element Node at b7af74ac: Name='filename' with 0 attributes and 1 children>

Traceback (most recent call last):
  File "ConfigReader.py", line 40, in ?
    c = ConfigReader(f)
  File "ConfigReader.py", line 32, in __init__
    print sourceNode.getElementsByTagName("filename")[0].nodeValue()
TypeError: 'NoneType' object is not callable

Given only the first call everything seems fine, I have a Node object for
the filename.
But why does the second call fails?

The documentationhttp://pyxml.sourceforge.net/topics/howto/node20.html says:


nodeValue
Value of this node. For some types of node, such as Text nodes, the value is
a string containing a chunk of textual data; for others, such as Text, the
value is just None.

Which I don't really understand? What is differencee between the two text
nodes??

Thanks,

Florian


From fredrik at pythonware.com  Thu May 12 06:30:39 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 12 May 2005 12:30:39 +0200
Subject: Python Documentation (vs PHP stuff)
References: <d5tjng$kae$1@sea.gmane.org><mailman.390.1115838298.29826.python-list@python.org><d5to4d$895$1@solaris.cc.vt.edu><d5tqi2$d8l$2@sea.gmane.org>
	<d5udc6$uk7$1@sea.gmane.org>
Message-ID: <d5vapu$ahi$1@sea.gmane.org>

Terry Reedy wrote:

> Conclusion 1: if PHP is anything as awful as the manual, it is not for me.

the whole idea that turning the manual into a wiki or a forum will solve all
problems is extremely naive.

on the other hand, having written lots of "manual enhancing material", I would
love to be able to add links to the library manual in some non-intrusive way
(similar to blog trackbacks).  what you need is a way to uniquely identify a
library construct (e.g. a psuedo-URL or simply a dotted path), a way to
contribute a path/link collection, and an addition to the HTML generation
toolchain that adds relevant links to the generated HTML.  e.g.

    <annotations src="http://effbot.org/python-annotations.xml">
        <example>
            <title>Building An Asynchronous FTP Client</title>
            <target>asynchat.async_chat</target>
            <href>http://effbot.org/zone/asyncore-ftp-client.htm</href>
        </example>
         <example>
            <title>The select module</title>
            <target>select.select</target>
            <href>http://effbot.org/librarybook/select.htm</href>
        </example>
        <example>
            <title>Using the tempfile module to open temporary files</title>
            <target>tempfile</target>
            <target>tempfile.TemporaryFile</target>
            <href>http://effbot.org/librarybook/tempfile.htm#tempfile-example-2</href>
        </example>
        <example>
            <title>Importing Python Modules</title>
            <target>statement:import</target>
            <target>statement:from</target>
            <href>http://effbot.org/zone/import-confusion.htm</href>
        </example>
    </annotation>

(I'm sure some RDF hacker can come up with an unreadable alternative
to this, if necessary ;-)

this eliminates the need for constant monitoring of wiki pages and forums, and
reduces the workload for the documentation editors compared to all the "feel
free to contribute patches" alternatives.  if some annotation provider produces
bad stuff or spam, remove his/her annotations, or use a whitelist/blacklist on
individual items.

if someone fixes the python.org end of things, I can generate an effbot.org
annotation index within a day or two.

</F> 





From sklass at pointcircle.com  Thu May 19 18:20:17 2005
From: sklass at pointcircle.com (rh0dium)
Date: 19 May 2005 15:20:17 -0700
Subject: Convert from numbers to letters
In-Reply-To: <1116535087.901874.167870@g43g2000cwa.googlegroups.com>
References: <1116511005.900715.107260@o13g2000cwo.googlegroups.com>
	<1116519193.037429.93560@o13g2000cwo.googlegroups.com>
	<1116529140.470352.129690@z14g2000cwz.googlegroups.com>
	<mailman.224.1116530388.8733.python-list@python.org>
	<1116535087.901874.167870@g43g2000cwa.googlegroups.com>
Message-ID: <1116541217.303770.314860@f14g2000cwb.googlegroups.com>

Wow - now that is ugly..  But it is effective.  I would love a cleaner
version - but I did say brevity :)

Nice work.



From qwweeeit at yahoo.it  Wed May 18 04:55:00 2005
From: qwweeeit at yahoo.it (qwweeeit at yahoo.it)
Date: 18 May 2005 01:55:00 -0700
Subject: newbie running IDLE with command line arguments
In-Reply-To: <1116359897.142957.135280@g44g2000cwa.googlegroups.com>
References: <1116349009.098767.317970@g44g2000cwa.googlegroups.com>
	<1116359897.142957.135280@g44g2000cwa.googlegroups.com>
Message-ID: <1116406500.562106.177060@g43g2000cwa.googlegroups.com>

Hi,
I apologize not to have answered to your question in a coherent way. I
can take as excuses that I don't know English very well or that I was
mistaken by the fact that you refer a piece of code  with the error
traceback (instead of simply asking for  how entering command
parameters in IDLE).
But the "real" reason is what I call the "guru syndrome", that takes
the newbies like me when they think they can teach something to
experts!
Of course I don't know the answer for your question, which can be
referred also  to the interactive Python and, AFAIK, also to the script
itself.
The only suggestion is to wrap your code with embedded the wanted
parameters, and call it by means of import (but be carefull...I'm not
an expert!)
Bye.



From littlejohn.75 at news.free.fr  Mon May 23 05:38:35 2005
From: littlejohn.75 at news.free.fr (F. Petitjean)
Date: 23 May 2005 09:38:35 GMT
Subject: firebird and unicode
References: <2u5ke.98532$384.5621810@phobos.telenet-ops.be>
	<5w9ke.98690$Ir4.5630011@phobos.telenet-ops.be>
	<Xohke.98900$xE4.5566584@phobos.telenet-ops.be>
Message-ID: <4291a49a$0$4398$636a15ce@news.free.fr>

Le Mon, 23 May 2005 09:30:31 GMT, flupke a ?crit :
> It's like jumping over a fence with barb wire.
> You know your balls might be in danger but 
> sometimes you got to take a risk :)
+1  QOTW

> 
> I hope i don't end up singing with a funny voice ;)


From pinard at iro.umontreal.ca  Thu May 26 17:46:35 2005
From: pinard at iro.umontreal.ca (=?iso-8859-1?Q?Fran=E7ois?= Pinard)
Date: Thu, 26 May 2005 17:46:35 -0400
Subject: staticmethod and classmethod
In-Reply-To: <42963525$0$10289$636a15ce@news.free.fr>
References: <d6v2s5$blp$1@ucsnew1.ncl.ac.uk>
	<42963525$0$10289$636a15ce@news.free.fr>
Message-ID: <20050526214635.GA9071@alcyon.progiciels-bpi.ca>

[Bruno Desthuilliers]
> C Gillespie a ?crit :

> > Does anyone know of any examples on how (& where) to use
> > staticmethods and classmethods?

> Here's an example from a ldap lib [...]

I recently had a use case for class methods while converting a PL/I
program to Python: a lot of global declarations, where in many cases,
procs could be regrouped around well identified subsets of globals.

The idea is to create a class for each related group of globals.  The
global declarations themselves become class variables of that class, and
related procs become class methods meant to act on these class variables.

For best clarity and legibility while doing so, one should use all
lowercase class names in such cases, and use `self' instead of `cls' for
the first formal argument of class methods[1].

Then, one use these classes as if they were each the single instance
of a similar class with usual methods.  If one later changes his/her
mind and wants more usual objects, and not allocated statically (!),
merely remove all classmethod declarations, capitalise the first letter
of class names, and create one instance per class into the all lowercase
name of the class.  That's seemingly all.

--------------

[1] I already found out a good while ago, in many other cases unrelated
to this one, but notably in metaclasses, that `self' is often (not
always) clearer than `cls'.  Classes are objects, too! :-)

-- 
Fran?ois Pinard   http://pinard.progiciels-bpi.ca


From Pidaqing at mail.iame.cn  Thu May 12 23:31:41 2005
From: Pidaqing at mail.iame.cn (=?gb2312?B?xqS088fs?=)
Date: Fri, 13 May 2005 11:31:41 +0800
Subject: Property,how to use it?
Message-ID: <20050514012509.308012886A@mail.iame.cn>

Python-list????
      What is the "property" mean in the python? Who can explain it for me? 
I don't know how to use it.
	

?????????
??
 				

???????????
????????Pidaqing at mail.iame.cn
??????????2005-05-13

From qwweeeit at yahoo.it  Sat May 14 18:14:01 2005
From: qwweeeit at yahoo.it (qwweeeit at yahoo.it)
Date: 14 May 2005 15:14:01 -0700
Subject: Modifying a built-in function for logging purposes
In-Reply-To: <Lcthe.1234$Ri4.1175@newsread1.news.pas.earthlink.net>
References: <1116098593.970438.219860@g47g2000cwa.googlegroups.com>
	<Lcthe.1234$Ri4.1175@newsread1.news.pas.earthlink.net>
Message-ID: <1116108841.429602.257380@o13g2000cwo.googlegroups.com>

Hi Greg,
thank for your replay, but I didn't succeed in any way. You must
consider however that I'm not a Python "expert"...
IMHO, it must be a script that change part of the interpreter, and
substitute a new module (py) in the place of the standard one (py or
pyc). The standard module must be saved in order to be able to undo the
changes and go back to the normal behaviour.
The problem is that I don't know if the built-in functions like open
(or file) are written in Python or in C and, besides that, if they can
be modified.
Other solutions which modify the source to be logged, are not
solutions, because it is far simpler to introduce here and there print
statements... 
Bye.



From greg.steffensen at gmail.com  Thu May 19 19:05:44 2005
From: greg.steffensen at gmail.com (gsteff)
Date: 19 May 2005 16:05:44 -0700
Subject: Process monitoring
Message-ID: <1116543944.348711.11910@g43g2000cwa.googlegroups.com>

Hey, I'm working on a Python program that will launch some other
non-Python process using os.spawn (in the os.P_NOWAIT mode) and then
basically wait for it to finish (while doing some other stuff in the
interim).  Normally, the new process will signal that it's done by
writing to a file, but I'd like to also find out if the new process
died unexpectedly.  Anyone know any preferrable ways to do this?

Greg Steffensen



From qhfgva at gmail.com  Fri May 20 13:10:06 2005
From: qhfgva at gmail.com (qhfgva at gmail.com)
Date: 20 May 2005 10:10:06 -0700
Subject: circular imports
References: <1116599898.308012.71220@g47g2000cwa.googlegroups.com>
	<428e0e3a$0$26404$9b622d9e@news.freenet.de>
Message-ID: <1116609006.485984.11780@o13g2000cwo.googlegroups.com>

All of the __init__.py files are empty and I don't know of any
overlapping of names.  Like I said this is code that works fine, I'm
just trying to clean up some things as I go.  Here are my working
examples:

x1.py
======
# how things work in our code now:
# called with home/dlee/test/module python aaa/x1.py
import sys
sys.path.append('/home/dlee/test/module')

import x2

def goo():
    print 'hi from goo'

if __name__ == '__main__':
    x2.foo()

x2.py
======
import sys
sys.path.append('/home/dlee/test/module')
import x1

def foo():
    print 'entered foo'
    x1.goo()


y1.py
======
# this works but is not quite what I want
# called with "PYTHONPATH=$PYTHONPATH:/home/dlee/test/module python
aaa/y1.py"

import aaa.y2

def goo():
    print 'hi from goo'

if __name__ == '__main__':
    aaa.y2.foo()


y2.py
======
import aaa.y1

def foo():
    print 'entered foo'
    aaa.y1.goo()


z1.py
======
# how I'd like things to work, but is failing for me
# called with "PYTHONPATH=$PYTHONPATH:/home/dlee/test/module python
aaa/z1.py"

from aaa import z2

def goo():
    print 'hi from goo'

if __name__ == '__main__':
    z2.foo()


z2.py
======
om aaa import z1

def foo():
    print 'entered foo'
    z1.goo()




w1.py
======
# this would also be acceptible
# called with "PYTHONPATH=$PYTHONPATH:/home/dlee/test/module python
aaa/w1.py"

import aaa.w2 as w2

def goo():
    print 'hi from goo'

if __name__ == '__main__':
    w2.foo()


w2.py
======
import aaa.w1 as w1

def foo():
    print 'entered foo'
    w1.goo()



From davidschein at alumni.tufts.edu  Tue May 31 10:54:23 2005
From: davidschein at alumni.tufts.edu (David S.)
Date: Tue, 31 May 2005 14:54:23 +0000 (UTC)
Subject: standard doc style for method signatures
References: <loom.20050530T201141-934@post.gmane.org>
Message-ID: <loom.20050531T165228-67@post.gmane.org>

David S. <davidschein <at> alumni.tufts.edu> writes:

> 
> Is there a generally accepted way to denote method signatures---that is,
> expected type or required interface for each argument.  
> 
Here is an answer:
http://python.org/peps/pep-0257.html
http://www.python.org/peps/pep-0008.html





From p at ulmcnett.com  Sat May 14 00:47:11 2005
From: p at ulmcnett.com (Paul McNett)
Date: Fri, 13 May 2005 21:47:11 -0700
Subject: Faster GUI text control
In-Reply-To: <pan.2005.05.14.04.20.18.359033@jerf.org>
References: <A_udnVpGA43xjBjfRVn-iQ@comcast.com>
	<pan.2005.05.14.04.20.18.359033@jerf.org>
Message-ID: <428582CF.7080307@ulmcnett.com>

Jeremy Bowers wrote:
> The problem is that if you're really looking for performance, it may
> differ based on the characteristics of the text and the quality of the
> target computer, the platform (which you don't mention; GTK may scream in
> Linux and make you scream in Windows...), etc., and there may be no one
> person who can give you a firm "This is the best solution for your
> situation" answer.

Also, it must be said that thousands of lines of text in a GUI control 
may not be necessary. Do the users really need to be able to scroll 
through that much text all at once in the general case, or do they 
perhaps only ever need to see the last few dozen lines? Could they 
instead "page" through the text in swallowable morsels, say a couple 
hundred lines at a time?

Python can handle gargantuan amounts of text with little noticable 
performance penalty, while GUI controls aren't necessarily designed for 
that. What I'm getting at is that you could still have the entire string 
in memory, but only feed portions of that string to the GUI text control 
at a time.

I'm jumping in here - perhaps the OP already told us what the 
application is, but I'm curious why it is necessary to have thousands of 
lines displayed and editable all at once, and wonder if the design 
should be reconsidered. I know that native Windows controls in 
particular tend to get really squirrly and unpredictable once you push 
into thousands of lines.

-- 
pkm ~ http://paulmcnett.com



From rhall at thiess.com.au  Thu May 19 12:44:41 2005
From: rhall at thiess.com.au (Bloke)
Date: 19 May 2005 09:44:41 -0700
Subject: SSL (HTTPS) with 2.4
References: <1116392416.139727.84630@g49g2000cwa.googlegroups.com>
	<428AD4D1.8030405@v.loewis.de>
	<1116396878.995648.206820@g49g2000cwa.googlegroups.com>
	<1116406256.213128.68180@f14g2000cwb.googlegroups.com>
	<grGie.3984$uR4.2802@newsread2.news.atl.earthlink.net>
	<1116422715.320683.228810@g49g2000cwa.googlegroups.com>
	<1116424363.953180.79260@g47g2000cwa.googlegroups.com>
	<1116424660.917136.79680@g47g2000cwa.googlegroups.com>
	<428b7bc5$0$7346$9b622d9e@news.freenet.de>
	<1116463961.944713.210860@g49g2000cwa.googlegroups.com>
	<mailman.208.1116513082.8733.python-list@python.org>
Message-ID: <1116521081.100575.70720@f14g2000cwb.googlegroups.com>

Andrew,

It seems I'm not the only one going nuts here.  I have just spent the
last 4 hrs stepping through the code in the debugger.  It seems to get
stuck somewhere in the socket module (when it calls ssl) but haven't as
yet figured out exactly where.

I am _very_ interested to find that you have the same prob with a
non-authenticating proxy.  I had considered I was doing something wrong
with the authentication, but from what you say, and from what I have
deduced from the code, it is not the authentication that is at fault.

Like you, a standard browser works fine, so I'm inclined to think there
is something buggy with the way the sockets module talks to the proxy.
There has been some suggestion that it may me a 'Microsoftish' proxy
which is at fault, but I believe it is a Squid proxy our company uses.

There is an interesting note here (
http://www.squid-cache.org/Doc/FAQ/FAQ-11.html  setcion 11.34 )
regarding malformed https requests sent through Squid with buggy
clients.  It may be worth looking into.

Anyway, if you have any luck, _please_ let me know - I'm getting
desparate.



From qwweeeit at yahoo.it  Thu May 19 13:10:47 2005
From: qwweeeit at yahoo.it (qwweeeit at yahoo.it)
Date: 19 May 2005 10:10:47 -0700
Subject: Self-modifying Code
Message-ID: <1116522647.227661.99290@g43g2000cwa.googlegroups.com>

Hi all,

when I was young I programmed in an interpreted language that allowed
to modify itself.
Also Python can (writing and running a module, in-line):

fNew =open("newModule.py",'w')
lNew=['print 123\n','print 454\n','print 789\n']
fNew.writelines(lNew)
fNew.close()
from newModule import *

Running this small example it correctly displays:
123
456
789

Did you know? Certainly someone has already discovered and applied
that, because the applications are several (think only to the
possibility of reducing code length by eliminating the coding of false
alternatives, or the possibility to convert a list of instructions
taken somewhere in a running code...)

Bye.



From mwm at mired.org  Sat May 28 14:22:18 2005
From: mwm at mired.org (Mike Meyer)
Date: Sat, 28 May 2005 13:22:18 -0500
Subject: Case Sensitive, Multiline Comments
References: <1117137316.140791.210430@g14g2000cwa.googlegroups.com>
	<8664x5y92g.fsf@guru.mired.org> <429654DA.9050903@lexicon.net>
	<1117154013.092736.298310@g14g2000cwa.googlegroups.com>
	<qc7d9112aqr5tj8devjeaign84dc21ti8p@4ax.com>
Message-ID: <864qcnw6qt.fsf@guru.mired.org>

Dennis Lee Bieber <wlfraed at ix.netcom.com> writes:

> On 26 May 2005 17:33:33 -0700, "Elliot Temple" <curi42 at gmail.com>
> declaimed the following in comp.lang.python:
>
>> Thanks for the link on case sensitivity.  I'm curious about the person
>> who found case sensitivity useful though: what is it useful for?
>> 
> 	Making a language run faster on slow machines since the syntax
> parsing doesn't have to do the equivalent of upper or lower casing
> anything that is not a string literal before checking for keywords or
> identifiers.
>
> 	Consider the time spent by languages like Ada and Fortran when
> they have to do case normalization every time you compile.

Hopefully, this should be minimal. You canonicalize them all as soon
as you realize you can. With proper language design, this may be as
soon as you recognize that they aren't in a string.

This brings to mind the reason I quit using Microsoft products. I was
writing z80 assembler, and habitually wrote everything in lower case,
including all the op codes.

The assembler refused to recognize the indexed instruction opcodes
that were present on the z80 but not the 8080. I double-checked the op
codes, did the "delete and retype" thing, and in general went crazy
trying to figure out what was wrong.

I eventually called Microsoft and asked. The answer was "Those have to
be in upper case." That told me enough about the insides of MS
software that I swore off it, and have never purchased an MS product
since.

        <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From combinational.logic at soc-ip.com  Fri May 27 13:53:21 2005
From: combinational.logic at soc-ip.com (combinational.logic $ soc-ip.com)
Date: 27 May 2005 10:53:21 -0700
Subject: Does Python have a Template::Extract equivalent from Perl's CPAN
In-Reply-To: <1117215841.123847.234300@o13g2000cwo.googlegroups.com>
References: <1117215841.123847.234300@o13g2000cwo.googlegroups.com>
Message-ID: <1117216401.626017.218080@g49g2000cwa.googlegroups.com>

Can you please elaborate on how to use Python for MS Excel AddIn
development?  Is this easy to do?  I would love to be able to create
custom extensions to Excel using python!  IMHO Python is much better
than Perl due to its OOP features.

Cheers,
  CL



From chuck at jazzemail.com  Wed May 18 18:48:08 2005
From: chuck at jazzemail.com (Chuck)
Date: 18 May 2005 15:48:08 -0700
Subject: Python Interest group in Minneapolis/StPaul?
Message-ID: <1116456488.914143.31350@o13g2000cwo.googlegroups.com>

Just curious if there is a Python Interest Group
in The TwinCities.  Thanks

Chuck



From fredrik at pythonware.com  Mon May  9 16:32:23 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Mon, 9 May 2005 22:32:23 +0200
Subject: Advice needed on __del__
References: <d5o1s1$8h3$1@sea.gmane.org> <d5obmp$cqh$1@sea.gmane.org>
	<427FBAD4.3070004@anvilcom.com>
Message-ID: <d5ogv2$2k9$1@sea.gmane.org>

"phil" wrote:

> > Python makes no guarantees whatsover about when and how to
> > run __del__, so relying on it to remove user-visible resources is a
> > rather bad idea.

> What does that mean?  Is it a destructor or not?

it's a finalizer.

most Python implementations do a reasonable attempt to call finalizers
on all objects, sooner or later, but it's not guaranteed by the language
specification:

    "It is not guaranteed that __del__() methods are called for
    objects that still exist when the interpreter exits."

> I create thousands of instances of objects in a geometry
> instruction program and rely heavliy on __del__ to do its
> thing.  For instance when I am rotating objects, I delete and
> recreate somtimes hundreds of times. Works so far.

why do you rely on __del__ to remove your objects?  why not just
leave that to the garbage collector?

(__del__ disables cycle detection, so a program that uses __del__
carelessly is more likely to leak memory than a program that doesn't
use it at all).

> 2. If Python is an oop language, meaning instances of classes
>      are essential, then a reliable destructor method is essential.

Python is not C++.

</F>





From toc-01-nospam-removethisword at blikroer.dk  Fri May 13 13:17:32 2005
From: toc-01-nospam-removethisword at blikroer.dk (Tomas Christiansen)
Date: 13 May 2005 17:17:32 GMT
Subject: Simple TCP "relay" or "proxy"
Message-ID: <Xns9655C42C6D1A7tomascdenmark@212.242.40.170>

Im trying to make a simple TCP socket "relay" or "proxy", but my skills in 
Python are not high (yet).

The only thing it should do, is to open the connection on behalf of the 
client, and when the client closes the connection, it should do so too. 
It's going to "relay" PCL and/or PostScript printjobs to a TCP/IP printer.

Does anyone have some sugggestions on code-examples? I've tried googling 
around, but couldn'r find anythin usefull.

-------
Tomas


From rune.strand at gmail.com  Tue May 31 17:54:32 2005
From: rune.strand at gmail.com (Rune Strand)
Date: 31 May 2005 14:54:32 -0700
Subject: Python as client-side browser script language
Message-ID: <1117576472.580086.300140@g43g2000cwa.googlegroups.com>

What would it take to create a Firefox extension that enables Python as
a script language in the browser - just like Javascript? Is it at all
possible? Are the hundred good reasons not to bother?

I once made an application that used MozPython[1]. It was fun and very
fast compared to the Mod_Python I eventually replaced it with. I had
to, because of all the mess updating Mozilla caused. ActiveState has a
project too [2]. But none of these can replace Javascript

Grail used Python as scrpt language, I believe. And by the
Win32-wonders of Mr. Hammeond it's possible to use Python in IE. But
what aboit a easy-to-install extension for Firefox? Wouldn't that be
cool?


[1] http://www.thomas-schilz.de/MozPython/README.html
[2] http://www.mozilla.org/catalog/architecture/xpcom/pyxpcom/



From bplumhoff at t-online.de  Tue May 24 05:31:06 2005
From: bplumhoff at t-online.de (bplumhoff at t-online.de)
Date: 24 May 2005 02:31:06 -0700
Subject: searching substrings with interpositions
In-Reply-To: <1116926253.186047.195260@g43g2000cwa.googlegroups.com>
References: <1116926253.186047.195260@g43g2000cwa.googlegroups.com>
Message-ID: <1116927066.669611.107400@g43g2000cwa.googlegroups.com>

Hello Giorgi,

I suggest to google for "python boyer moore" to get a fast
implementation of a string search algorithm in Python (the Boyer-Moore
algorithm).

One promising hit seems to be:
http://www.egenix.com/files/python/mxTextTools.html

HTH,
Bernd



From pinard at iro.umontreal.ca  Mon May  2 17:05:00 2005
From: pinard at iro.umontreal.ca (=?iso-8859-1?Q?Fran=E7ois?= Pinard)
Date: Mon, 2 May 2005 17:05:00 -0400
Subject: WordPress Python Library 1.0
In-Reply-To: <Rmwde.850131$b5.37722456@news3.tin.it>
References: <Rmwde.850131$b5.37722456@news3.tin.it>
Message-ID: <20050502210500.GA29461@alcyon.progiciels-bpi.ca>

[Michele Ferretti]
> http://www.blackbirdblog.it/programmazione/progetti/28

Quoted above, the full content of your article.  Is it a message?  It
surely does not look like an English sentence.

Should we start a browser each time we see an URL?  Many of us are not
in such an Internet starvation.  If you want to raise our appetite,
maybe a few words of introduction or explanation would be welcome. :-)

-- 
Fran?ois Pinard   http://pinard.progiciels-bpi.ca


From steve at REMOVETHIScyber.com.au  Sat May  7 12:42:09 2005
From: steve at REMOVETHIScyber.com.au (Steven D'Aprano)
Date: Sun, 08 May 2005 02:42:09 +1000
Subject: Need help subclassing Borg
References: <pan.2005.05.07.12.28.34.263372@REMOVETHIScyber.com.au>
	<1115480121.527653.220780@o13g2000cwo.googlegroups.com>
Message-ID: <pan.2005.05.07.16.42.08.299541@REMOVETHIScyber.com.au>

On Sat, 07 May 2005 08:35:21 -0700, wittempj at hotmail.com wrote:

> See mr Martellis comment of 2001/09/06 in mentiond recipe, you then get
> something like this
> 
> -#!/usr/bin/env python
> -class Borg(object):
> -    _shared_state = {}
> -    def __init__(self):
> -        self.__dict__ = self._shared_state
> -
> -class Duck(Borg):
> -    def __init__(self):
> -        super(Duck, self).__init__()
> -        self.__covering = "feathers" # all ducks are feathered

What version of Python are you using? I'm using 2.3.3 and I get this:

py> donald = Duck()
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File "<stdin>", line 3, in __init__
TypeError: super() argument 1 must be type, not classobj



>-        self.__covering = "feathers" # all ducks are feathered
>-    def covering(self):
>-        return self.__covering
>-
>-class Rabbit(Borg):
>-    def __init__(self):
>-        super(Rabbit, self).__init__()
>-        self.__covering = "fur" # all rabbits are furry
> -    def covering(self):
> -        return self.__covering

Hmmm... I hate to be ungrateful, but apart from being inelegant, it means
having to write get_attribute() and set_attribute() methods for every
attribute the caller might conceivably use. I'm sure to miss at least one.
*wink*

Either that or muck around with __getattr__ and __setattr__, which is
getting uglier by the minute.

I'm thinking what I might need is a function that generates a Borg-like
class. So I would do something like:

Rabbit = MakeBorgClass()
# Rabbit is now a class implementing shared state
# all instances of Rabbit share the same state
Duck = MakeBorgClass()
# Duck is now a class implementing shared state
# all instances of Duck share the same state
# but instances of Duck do not share state with instances of Rabbit

Problem is, I haven't got the foggiest idea how to implement something
like that. Am I on the right track? Where do I go from here?



Thanks,


Steven.













From qwweeeit at yahoo.it  Thu May 12 07:10:17 2005
From: qwweeeit at yahoo.it (qwweeeit at yahoo.it)
Date: 12 May 2005 04:10:17 -0700
Subject: Importing modules
References: <1115816747.292060.292200@o13g2000cwo.googlegroups.com>
	<mailman.380.1115830888.29826.python-list@python.org>
	<1115835958.080135.290900@o13g2000cwo.googlegroups.com>
	<mailman.428.1115873323.29826.python-list@python.org>
Message-ID: <1115896217.806852.189660@g14g2000cwa.googlegroups.com>

Hi all.

Steve Holden wrote:
>
> ... to conflict with the "can't teach an old dog new tricks" ...

Excuse my English (also some terms of your replay have no
correspondance in my English dictionary...) and my lack of patience
(beeing an "old dog" ...).

My original request was mainly centered on flow chart and "import"
interfered with "my" understanding of an application.

By the way, (replaying to S?bastien Boisg?rault) of course I don't
use indirect import of any sort (it's too tricky for me...).

The only constructive comments was that of George Sakkis on using UML
sequence diagrams.
Also Mike Meyer points me in the same direction (with more arguments
and ... warnings).

I will stick with their advice: I will abandon my project of
implementing a flow chart tool...

A last word of reconciliation: I must thank the expert group for their
valuable activity especially towards the newbies like me...

Regards.



From wangtianthu at gmail.com  Mon May  2 14:00:35 2005
From: wangtianthu at gmail.com (Tian)
Date: 2 May 2005 11:00:35 -0700
Subject: How close program in the wxPython?
Message-ID: <1115056835.472334.163220@z14g2000cwz.googlegroups.com>

I have made a program in wxpython, but how could i exit the program? I
am using wxFrame for my window, what is the function to close the
program?

Thanks!!



From ccurvey at gmail.com  Wed May 11 13:47:49 2005
From: ccurvey at gmail.com (Chris Curvey)
Date: 11 May 2005 10:47:49 -0700
Subject: win32com and ADO
Message-ID: <1115833669.142021.294080@g44g2000cwa.googlegroups.com>

I'm having one of those weeks.

I have this pattern all over my code.

result = conn.execute("select * from foo")

while not result.EOF:
    doSomething()
    result.MoveNext()

So recently I got around to running makepy on all of the Microsoft
ActiveX Data Objects, and now every call to that pattern is returning:

'tuple' object has no attribute EOF

can anyone tell me how I'm supposed to be using EOF?

can anyone point me to the file that has the function lists?

can anyone tell me how to undo what I've done?



From dcolford2000 at hotmail.com  Thu May 26 08:46:36 2005
From: dcolford2000 at hotmail.com (dcolford2000 at hotmail.com)
Date: 26 May 2005 05:46:36 -0700
Subject: Python Impact Analysis Tool ?
In-Reply-To: <mailman.110.1117053764.18027.python-list@python.org>
References: <1117027674.787033.113730@f14g2000cwb.googlegroups.com>
	<200505251520.54697.hancock@anansispaceworks.com>
	<mailman.110.1117053764.18027.python-list@python.org>
Message-ID: <1117111596.183489.201240@o13g2000cwo.googlegroups.com>

Hi

I am a mainframe designer/progrmmer. What I need is a tool that shows
me at design time what links to what so that I can understand the
application. When a design change comes through I could say OK this
change affects only A, B, and C out of the whole alphanet. Then I would
be able to isolate what needs to be changed and unit tested..I am
trying to improve programmer productivity at design time.

Thanks
Dave



From rhall at thiess.com.au  Thu May 19 20:59:48 2005
From: rhall at thiess.com.au (Bloke)
Date: 19 May 2005 17:59:48 -0700
Subject: SSL (HTTPS) with 2.4
In-Reply-To: <1116524774.606167.98240@f14g2000cwb.googlegroups.com>
References: <1116392416.139727.84630@g49g2000cwa.googlegroups.com>
	<428AD4D1.8030405@v.loewis.de>
	<1116396878.995648.206820@g49g2000cwa.googlegroups.com>
	<1116406256.213128.68180@f14g2000cwb.googlegroups.com>
	<grGie.3984$uR4.2802@newsread2.news.atl.earthlink.net>
	<1116422715.320683.228810@g49g2000cwa.googlegroups.com>
	<1116424363.953180.79260@g47g2000cwa.googlegroups.com>
	<1116424660.917136.79680@g47g2000cwa.googlegroups.com>
	<428b7bc5$0$7346$9b622d9e@news.freenet.de>
	<1116463961.944713.210860@g49g2000cwa.googlegroups.com>
	<mailman.208.1116513082.8733.python-list@python.org>
	<1116524774.606167.98240@f14g2000cwb.googlegroups.com>
Message-ID: <1116550788.207740.171780@o13g2000cwo.googlegroups.com>

Ideally, we should aim at a 'fix' that can be included in the
distribution.  I am going to look at what communication goes on between
the proxy server and a working browser by monitoring the traffic.  From
what i understand, the proxy needs to be told first to set up a secure
connection with the web site, and only then do you pass the url to the
proxy.


Bloke



From rogerb at rogerbinns.com  Thu May 26 01:41:21 2005
From: rogerb at rogerbinns.com (Roger Binns)
Date: Wed, 25 May 2005 22:41:21 -0700
Subject: Comparing 2 similar strings?
References: <24a6d$428b9c10$d1b717f8$2300@PRIMUS.CA><428c0d21$1@nntp0.pdx.net>
	<1116487353.934354.195940@g43g2000cwa.googlegroups.com>
Message-ID: <3k4gm2-9pk.ln1@home.rogerbinns.com>

<chrisconnett at gmail.com> wrote in message news:1116487353.934354.195940 at g43g2000cwa.googlegroups.com...
> ***Check out difflib, it's in the library.***  Perfect package for what
> the OP wants AFAICT.

The method in difflib is okay, but doesn't do that good a job.  It
is also relatively slow.  My need for this was matching records in
BitPim (eg which entries just read from a cell phone correspond to
which entries just read from Outlook)

Here are some links for the OP as well as ready to run code at the
end.

A paper on various algorithms and their effectiveness on various data
sets.

http://www.isi.edu/info-agents/workshops/ijcai03/papers/Cohen-p.pdf

They do have a Java library of all the algorithms by the same authors.

http://secondstring.sourceforge.net/

There is a group at the Australian National University with a project named
Febrl - Freely extensible biomedical record linkage.  The idea is to be able
to work out if two records from the same or different sources are the same
person.  All their code is in Python:

http://datamining.anu.edu.au/software/febrl/febrldoc/

The solution I settled on is using Jaro-Winkler. This is a quote from the
paper above:

  A surprisingly good distance metric is a fast heuristic scheme, proposed
  by Jaro (Jaro 1995; 1989) and later extended by Winkler (Winkler 1999).
  This works almost as well as the Monge-Elkan scheme, but
  is an order of magnitude faster

I did find a Python module that implemented this (it is part of the
python-levenshtein package).  Unfortunately there were some issues
at the time dealing with some strings that may be unicode and some
not.  There was one implementation I saw that took copies of both
strings and was replacing characters with asterisks.  My data sets
include meaningful asterisks so that seriously munged things.

Ultimately I wrote my own implementation with the following properties:

 - The arguments can be any combination of unicode and ordinary strings
 - There are no special characters nor ones used internally as replacements
 - A bitset is used for tracking so you use an eigth of the memory
 - There is both Python and C code implementations so you don't have
   to compile anything but can if you want

The code can be grabbed from:

http://cvs.sf.net/viewcvs.py/bitpim/bitpim/native/strings/

There is a detailed description at the begining of the Python implementation:

http://cvs.sf.net/viewcvs.py/bitpim/bitpim/native/strings/jarowpy.py?view=markup

Roger 




From querypk at gmail.com  Fri May  6 15:13:39 2005
From: querypk at gmail.com (querypk at gmail.com)
Date: 6 May 2005 12:13:39 -0700
Subject: min max of a list
In-Reply-To: <427bac26$1_3@newspeer2.tds.net>
References: <1115245476.036508.273930@g14g2000cwa.googlegroups.com>
	<427bac26$1_3@newspeer2.tds.net>
Message-ID: <1115406819.884785.52080@o13g2000cwo.googlegroups.com>

Hi Kent,
Thanks for that. But We are considering [..., 0, 101, 0, 0, 0, 0, 0] ->
[13,18] .In fact if you look at the list, the histogram ends at 15 that
is [0,101,0] --> [13,15]. Dont you think so.



From simon.brunning at gmail.com  Fri May 20 08:13:10 2005
From: simon.brunning at gmail.com (Simon Brunning)
Date: Fri, 20 May 2005 13:13:10 +0100
Subject: XML Newbie needing some serious help..
In-Reply-To: <1116548825.824988.263060@f14g2000cwb.googlegroups.com>
References: <1116548825.824988.263060@f14g2000cwb.googlegroups.com>
Message-ID: <8c7f10c60505200513100adf04@mail.gmail.com>

On 19 May 2005 17:27:05 -0700, rh0dium <sklass at pointcircle.com> wrote:
> HI all,
> 
> I am looking to parse a unix tool called lshw (
> http://ezix.sourceforge.net/software/lshw.html ).  Now this provides a
> nice XML output which looks similar to the bottom of this message..

That doesn't appear to be well-formed XML, which isn't a good start...

-- 
Cheers,
Simon B,
simon at brunningonline.net,
http://www.brunningonline.net/simon/blog/


From jeremysanders at gmail.com  Thu May 19 17:18:49 2005
From: jeremysanders at gmail.com (Jeremy Sanders)
Date: Thu, 19 May 2005 22:18:49 +0100
Subject: ANN: Veusz 0.6 - a scientific plotting package
Message-ID: <pan.2005.05.19.21.18.37.210403@gmail.com>

Veusz 0.6
---------
Velvet Ember Under Sky Zenith
-----------------------------
http://home.gna.org/veusz/

Veusz is Copyright (C) 2003-2005 Jeremy Sanders <jeremy at jeremysanders.net>
Licenced under the GPL (version 2 or greater)

Veusz is a scientific plotting package written in Python (currently
100% Python). It uses PyQt for display and user-interfaces, and
numarray for handling the numeric data. Veusz is designed to produce
publication-ready Postscript output.

Veusz provides a GUI, command line and scripting interface (based on
Python) to its plotting facilities. The plots are built using an
object-based system to provide a consistent interface.

Changes from 0.5:
 Please refer to ChangeLog for all the changes.
 Highlights include:
  * Major UI enhancements - much faster to control now, more dialogs
  * Veusz can be embedded within other non-PyQt Python programs. Its plots
    can be updated at any time from the embedding program using the
    command line interface.
  * Dialogs for manipulating datasets using expressions, and direct editing
  * Multiple documents can be opened simultaneously
  * Lots of bug fixes (e.g. log axes improvement, rotation of labels)
  * Unicode support in plots

Features of package:
 * X-Y plots (with errorbars)
 * Stepped plots (for histograms)
 * Line plots
 * Function plots
 * Fitting functions to data
 * Stacked plots and arrays of plots
 * Plot keys
 * Plot labels
 * LaTeX-like formatting for text
 * EPS output
 * Simple data importing
 * Scripting interface
 * Save/Load plots
 * Dataset manipulation
 * Embed Veusz within other programs

To be done:
 * Contour plots
 * Images
 * UI improvements
 * Import filters (for qdp and other plotting packages, fits, csv)

Requirements:
 Python (probably 2.3 or greater required)
   http://www.python.org/
 Qt (free edition)
   http://www.trolltech.com/products/qt/  
 PyQt (SIP is required to be installed first)
   http://www.riverbankcomputing.co.uk/pyqt/
   http://www.riverbankcomputing.co.uk/sip/
 numarray
   http://www.stsci.edu/resources/software_hardware/numarray
 Microsoft Core Fonts (recommended)
   http://corefonts.sourceforge.net/

For documentation on using Veusz, see the "Documents" directory. The
manual is in pdf, html and text format (generated from docbook).

If you enjoy using Veusz, I would love to hear from you. Please join
the mailing lists at

https://gna.org/mail/?group=veusz

to discuss new features or if you'd like to contribute code. The
newest code can always be found in CVS.

If non GPL projects are interested in using Veusz code, please contact
me. I am happy to consider relicencing code for other free projects,
if I am legally allowed to do so.

Cheers

Jeremy



From sakesun at boonthavorn.com  Thu May 26 21:49:18 2005
From: sakesun at boonthavorn.com (Sakesun Roykiattisak)
Date: Fri, 27 May 2005 08:49:18 +0700
Subject: __init__() not called automatically
In-Reply-To: <Jxkle.833658$w62.402161@bgtnsc05-news.ops.worldnet.att.net>
References: <1117081917.760603.82610@z14g2000cwz.googlegroups.com>	<mailman.120.1117082812.18027.python-list@python.org><1117083921.273155.190790@g44g2000cwa.googlegroups.com>	<mailman.122.1117088782.18027.python-list@python.org>
	<Jxkle.833658$w62.402161@bgtnsc05-news.ops.worldnet.att.net>
Message-ID: <42967C9E.6080009@boonthavorn.com>

Wow.. Andrew Koenig.. I found your name in many c++ books I read.  Never 
know you are hanging around in python python mailing-list.
(or perhaps python newsgroup, whatever it is)

Thanks for the explanation.

Andrew Koenig wrote:

>"Sakesun Roykiattisak" <sakesun at boonthavorn.com> wrote in message 
>news:mailman.122.1117088782.18027.python-list at python.org...
>
>  
>
>>Does c++ call base class constructor automatically ??
>>If I'm not wrong, in c++ you also have to call base class constructor 
>>explicitly.
>>    
>>
>
>In C++, if you don't call a base-class constructor (I am saying "a" rather 
>than "the" because there might be more than one direct base class), it is 
>called automatically with no arguments.  The only case in which you must 
>call it explicitly is if it will not accept an empty argument list.
>
>
>  
>



From peter at engcorp.com  Mon May 16 09:24:37 2005
From: peter at engcorp.com (Peter Hansen)
Date: Mon, 16 May 2005 09:24:37 -0400
Subject: Reg Date string conversion into timestamp function
In-Reply-To: <mailman.39.1116247518.8733.python-list@python.org>
References: <mailman.39.1116247518.8733.python-list@python.org>
Message-ID: <9YSdnajxIbfUAhXfRVn-1w@powergate.ca>

praba kar wrote:
>      I have doubt regarding date string to time
> conversion function.  In Python I cannot find flexible
> date string conversion function like php strtotime. I
> try to use following type
> function
> 1) parsedate function failed if a date string
> like below format "16-MAY-2005 01:26"
> 2)parsedate_tz function also failed if a date string
> is different format

Since that's not an RFC2822 date, it shouldn't really be surprising that 
a function that is designed to parse RFC2822 dates would fail to parse 
it properly...

Have you looked at the mxDateTime package's Parser submodule yet?
http://www.egenix.com/files/python/mxDateTime.html#Parser

-Peter


From kristian.zoerhoff at gmail.com  Tue May  3 13:54:29 2005
From: kristian.zoerhoff at gmail.com (Kristian Zoerhoff)
Date: Tue, 3 May 2005 12:54:29 -0500
Subject: trouble with lists
In-Reply-To: <1115142163.472256.205930@o13g2000cwo.googlegroups.com>
References: <1115142163.472256.205930@o13g2000cwo.googlegroups.com>
Message-ID: <3511dc750505031054516bab32@mail.gmail.com>

On 3 May 2005 10:42:43 -0700, anandr86 at gmail.com <anandr86 at gmail.com> wrote:
> I'm new to python. I tried doing this
> 
> >>> x = [[]] * 3
> >>> print x
> [ [] [] [] ]
> >>> x[0].append( 2 )
> [ [2] [2] [2] ]
> 
> I confused with the last line output. I actually expected something
> like
> 
> [ [2] [] [] ]

I think you want

>>> x[0] = [2]

But I have no idea why you're using nested lists in this case ([2] is
a one-item-long list, so x is actually a list of lists here). Are you
sure this is really what you want?

-- 
Kristian

kristian.zoerhoff(AT)gmail.com
zoerhoff(AT)freeshell.org


From fredrik at pythonware.com  Wed May 11 12:58:58 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Wed, 11 May 2005 18:58:58 +0200
Subject: Importing modules
References: <1115816747.292060.292200@o13g2000cwo.googlegroups.com>
Message-ID: <d5td6a$tkt$1@sea.gmane.org>

qwweeeit at yahoo.it wrote:

> To understand a program, however, you need also a flow chart...

so understand a carefully designed modular component structure, you
have to remove the structure so you can create a flow chart?

did you perhaps stumble upon a strange man with a keg of liquor back
in the sixties, or what's going on here? ;-)

</F>





From thomas at eforms.co.nz  Mon May  9 12:44:17 2005
From: thomas at eforms.co.nz (Thomas Thomas)
Date: Tue, 10 May 2005 04:44:17 +1200
Subject: urllib open error
Message-ID: <001101c554b6$578a0010$bb64a8c0@eformswin>

Hi all,

trying to download a file using urllib. Working fine on most machines.. failing in one..



Python 2.3.5 (#62, Feb  8 2005, 16:23:02) [MSC v.1200 32 bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import urllib;
>>> url='http://192.168.100.233/app/Assets/AssetDownload';
>>> f=urllib.urlopen(url);
>>> f.read()
'<HTML><HEAD>\n<TITLE>ERROR: The requested URL could not be retrieved</TITLE>\n</HEAD><BODY>\n<H1>ERROR</H1>\n<H2>The requested URL could not be retrieved</H2>\n<HR>\n<P>\nWhile trying to retrieve the URL:\n<A HREF="http://192.168.100.233/app/Assets/AssetDownload">http://192.168.100.233/app/Assets/AssetDownload</A>\n<P>\nThe following error was encountered:\n<UL>\n<LI>\n<STRONG>\nConnection Failed\n</STRONG>\n</UL>\n\n<P>\nThe system returned:\n<PRE><I>    (110) Connection timed out</I></PRE>\n\n<P>\nThe remote host or network may be down.  Please try the request again.\n<P>Your cache administrator is <A HREF="mailto:root">root</A>. \n\n<br clear="all">\n<hr noshade size=1>\nGenerated Mon, 09 May 2005 04:00:56 GMT by ipcop (Squid/2.4.STABLE6)\n</BODY></HTML>\n'

if I copy the url to a browser it works fine.

suggest any debug techiniques so I can figure out whats going wrong.

Note: I have tried the same stuff and it's working fine on (windows 2000, XP and on mac)  not this particular windows 2000 machine



Thanks in advance 

Thomas



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From michael at stroeder.com  Mon May 23 14:43:35 2005
From: michael at stroeder.com (=?ISO-8859-1?Q?Michael_Str=F6der?=)
Date: Mon, 23 May 2005 20:43:35 +0200
Subject: Access lotus notes using Python
In-Reply-To: <UEjke.447$2u1.383@newssvr19.news.prodigy.com>
References: <lWike.155$NV3.3324@news1.nokia.com>
	<UEjke.447$2u1.383@newssvr19.news.prodigy.com>
Message-ID: <prk9m2-2gi.ln1@nb2.stroeder.com>

Kartic wrote:
> The Great 'Sateesh' uttered these words on 5/23/2005 7:14 AM:
> 
>> Is it possible to access Lotus notes using Python? Can anyone provide me
>> some pointers?
> 
> Yes, you can... You need the win32all distribution installed and you can
> access Notes using the COM interface (win32com.client).

There could be even more cross-platform programming options depending
what "access Lotus Notes" really means for the original poster.

Depending on configuration a Domino server might have several Internet
protocol services for accessing Notes data (POP3, IMAP, LDAP, etc.).

Ciao, Michael.


From ptmcg at austin.rr.com  Thu May 26 02:56:53 2005
From: ptmcg at austin.rr.com (Paul McGuire)
Date: 25 May 2005 23:56:53 -0700
Subject: regexp for sequence of quoted strings
References: <1117050058.836444.189460@o13g2000cwo.googlegroups.com>
	<yfs64x7xby7.fsf@black4.ex.ac.uk>
	<1117058353.702619.179010@z14g2000cwz.googlegroups.com>
	<ucOdnc30iZ0tmgjfRVn-hw@comcast.com>
Message-ID: <1117090613.505213.104040@g14g2000cwa.googlegroups.com>

Ah, this is much better than my crude replace technique.  I forgot
about str.decode().

Thanks!
-- Paul



From bvande at po-box.mcgill.ca  Thu May 12 18:20:13 2005
From: bvande at po-box.mcgill.ca (Brian van den Broek)
Date: Thu, 12 May 2005 18:20:13 -0400
Subject: Launch file in Notepad
In-Reply-To: <d604lf$6vb$1@sea.gmane.org>
References: <42835db6$0$1334$5fc3050@dreader2.news.tiscali.nl>
	<42836024.1040102@po-box.mcgill.ca> <d604lf$6vb$1@sea.gmane.org>
Message-ID: <4283D69D.8070401@po-box.mcgill.ca>

Fredrik Lundh said unto the world upon 2005-05-12 13:52:
> Brian van den Broek wrote:
> 
> 
>>>I'm trying to lauch Notepad from Python to open a textfile:
>>>
>>>import os
>>>b1="c:\test.txt"
>>>os.system('notepad.exe ' + b1)
>>>
>>>However, the t of test is escaped by the \, resulting in Notepad trying
>>>to open "c: est.txt".
>>>
>>>How do I solve this?
>>
>>There are several ways, but the preferred solution is to switch the
>>slash direction: "c:/test.txt". Python's smart enough to notice its
>>running on Windows and do the right thing with the slash.
> 
> 
> that's slightly misleading: on the API level, most functions can handle
> both kinds of slashes.  functions like open(), os.remove(), shutil.copy()
> etc. handles either case just fine.  and in most cases, this is handled
> on the Win API level (or in the C library), not by Python.
> 
> however, in this case, the user passes a string to os.system().  that
> string is passed *as is* to the command shell (which, in this case,
> passes it on to notepad.exe as is).
> 
> </F>

Thanks to Fredrik and everyone else who contributed to the thread to 
correct my mistake.

Best to all,

Brian vdB



From duncan.booth at invalid.invalid  Sun May 29 12:49:29 2005
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 29 May 2005 16:49:29 GMT
Subject: how to convert string to list or tuple
References: <d74dbl$h91$1@news.yaako.com>
	<mailman.131.1117109560.18027.python-list@python.org>
	<1117383768.099922.308760@o13g2000cwo.googlegroups.com>
Message-ID: <Xns9665B54CBAA38duncanbooth@127.0.0.1>

Dan Bishop wrote:

> Simon Brunning wrote:
>> [...]
> 
> Or if you do use eval, don't give it access to any names.
> 
>> [...]
> os.system("rm -rf *")
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
>   File "<string>", line 0, in ?
> NameError: name 'os' is not defined
> 
Have you tried giving it the string '__import__("os").system("rm -rf *")'?
[Don't try that at home children!]

Even if you take steps to avoid that working by hiding the builtins, there 
are still too many ways to do nasty things with eval for it ever to be 
safe.



From ninjalabs at gmail.com  Mon May 16 08:52:27 2005
From: ninjalabs at gmail.com (Chris)
Date: 16 May 2005 05:52:27 -0700
Subject: Web server platform for beginner
Message-ID: <1116247947.853539.316620@g49g2000cwa.googlegroups.com>

Hi,

I'm looking at python as a serious alternative for Windows Forms, C#
and ASP.Net as it is completely open source.

I've determined that wxPython is the best replacement for Windows Forms
but have not managed to find a comprehensive list of all the web
platforms that python runs on apart from Zope and mod_python.

Are there any others which are simpler than mod_python handlers, yet
not as extensive as Zope?

Cheers,

- Chris.



From __peter__ at web.de  Tue May 31 04:25:19 2005
From: __peter__ at web.de (Peter Otten)
Date: Tue, 31 May 2005 10:25:19 +0200
Subject: __getattribute__ and __getattr__
References: <d7dgd4$29v$1@sea.gmane.org> <d7dpam$jal$1@sea.gmane.org>
	<mailman.277.1117525707.18027.python-list@python.org>
Message-ID: <d7h6v2$94b$01$1@news.t-online.com>

Gigi wrote:

> to be inaccurate. I fill a little like Leibnitz :-) . It's a curious

It's Leibniz -- unless you're in the cookie business.

I see your post for the third time, btw. What's wrong?

Peter



From rbt at athop1.ath.vt.edu  Tue May  3 13:13:45 2005
From: rbt at athop1.ath.vt.edu (rbt)
Date: Tue, 03 May 2005 13:13:45 -0400
Subject: [Errno 9] Bad File Descriptor on Windows 2003 Server & Py 2.4.1
In-Reply-To: <2v8f71l82cnrkd1rmr8lldfvn60aa456jb@4ax.com>
References: <d57sj2$amj$1@solaris.cc.vt.edu>
	<2v8f71l82cnrkd1rmr8lldfvn60aa456jb@4ax.com>
Message-ID: <d58bg9$6lp$1@solaris.cc.vt.edu>

Dennis Lee Bieber wrote:
> On Tue, 03 May 2005 08:59:14 -0400, rbt <rbt at athop1.ath.vt.edu>
> declaimed the following in comp.lang.python:
> 
> 
>>The below script produces a '[Errno 9] Bad File Descriptor' when 
>>executed. If I remove the try: except: statements, the script stops when 
>>the error occurs.
>>
> 
> 	Might help to supply the traceback so one can examine the
> particular line in question...
> 
> 
>>             a = os.stat('C:\WINDOWS\System32\config\%s' %log)
> 
> 
> 	Might I suggest using os.path.join() rather than the % notation?
> 
> 
>>             if log == 'AppEvent.Evt':
>>                 print "old_size", app_size, "\n"
>>                 if cur_size >= app_size:
>>                     app_size = cur_size
>>                     time.sleep(6)
>>                     continue
>>                 else:
>>                     send_email(log, app_size, cur_size)
>>                     time.sleep(6)
>>                     continue
>>
> 
> 	Drop the laddered if: structure, and use a dictionary...
> 
> logs = {"AppEvent.Evt" : 0, "SecEvent.Evt" : 0, "SysEvent.Evt" : 0}
> 
> def send_mail(...):
>     ...
> 
> while True:
>     for log in logs.keys():
>         cur_size = os.stat(os.path.join("C:/windows/system32/config",
>                                                             log))[6]
>         if cur_size >= logs[log]:
> 	logs[log] = cur_size
>         else:
>              send_email(log, logs[log], cur_size)
> 
>         time.sleep(6)
> 
> 

This was my first go at it. I know it's not pretty, but it works ;) 
Perhaps when I refactor or offer it to friends, I'll incorporate your 
suggestions... as of now, I'm the only one who sees or uses it.

Thanks,
rbt


From dan at dontspammecauseidontlikit.com  Wed May  4 05:26:22 2005
From: dan at dontspammecauseidontlikit.com (Dan)
Date: Wed, 04 May 2005 17:26:22 +0800
Subject: Creating Files
References: <esug71lo1nd3773rk71l7rtus35tm4mfcu@4ax.com>
	<427886b9$0$285$626a14ce@news.free.fr>
Message-ID: <195h71hm06gtipjafo6v62gh371b9n3tp6@4ax.com>

On Wed, 04 May 2005 10:24:23 +0200, bruno modulix <onurb at xiludom.gro>
wrote:

>As in any other language I know : just open it in write mode !-)

Easy when you know how.

Thanks



From bokr at oz.net  Sun May 15 05:02:38 2005
From: bokr at oz.net (Bengt Richter)
Date: Sun, 15 May 2005 09:02:38 GMT
Subject: Modifying a built-in function for logging purposes
References: <1116098593.970438.219860@g47g2000cwa.googlegroups.com>
	<mailman.11.1116136451.15315.python-list@python.org>
Message-ID: <42870ce7.218732070@news.oz.net>

On Sun, 15 May 2005 07:52:42 +0200, "Fredrik Lundh" <fredrik at pythonware.com> wrote:

>qwweeeit at yahoo.it wrote:
>
>> I wonder if it is possible to change (temporarily) a built-in function
>> for logging purposes.
>> Let me explain:
>> I want to log all the 'open' operations, recording the file to be
>> opened, the "mode" (r/w/a...) and (possibly) the module which made the
>> call.
>
>import sys
>import __builtin__ # note: no plural s
>
>old_open = __builtin__.open
>
>def myopen(*args):
>    code = sys._getframe(1).f_code
>    print "OPEN", args, "FROM", code.co_name, "IN", code.co_filename
>    return old_open(*args)
>
>__builtin__.open = myopen
>
>this only handles file opens that goes via the "open" function, of course.
>to handle all opens, including internal operations (e.g. imports), you're
>probably better off using an external tool (e.g. strace, filemon, or some-
>thing similar).
>
I should have mentioned that for my version of the same thing.

I wonder what the chances are for a hook to catch all opens.
My feeling is that file system access should be virtualized
to look like a unix directory tree, with all manner of duck-typed
file-system-like things mountable in the tree, and built-in open
would refer to the open of a particular virtually mounted file system
that might be configured to default as now. Anyway, lots of stuff
would become possible... e.g., msys, the MinGW-related shell provides
some of this capability, virtualizing windows partitions as /c/* /d/* 
and so forth, as well as having virtual mounts of various subdir trees.
Good night...

Regards,
Bengt Richter


From duncan.booth at invalid.invalid  Mon May  9 11:55:21 2005
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 9 May 2005 15:55:21 GMT
Subject: include "apythonscript.py"
References: <1115648730.390588.158760@z14g2000cwz.googlegroups.com>
	<1115651334.811250.60520@o13g2000cwo.googlegroups.com>
	<1115652506.460144.173870@o13g2000cwo.googlegroups.com>
Message-ID: <Xns9651AC22B7D19duncanbooth@127.0.0.1>

 wrote:

> Ah damn , that's the way.
> 
> And what if you have a very big class and want to include some class
> functions ?
> 
> class ThisIsAClass:
>     def __init__(self):
> 
>      Here I want to import a class def
> 

The usual way to handle that would be to not write a 'very big class' at 
all: create a lot of comparatively simple classes and use either 
inheritance or aggregation as appropriate to combine them.

You will find this makes your life much easier all round.

What you are doing sounds like a classic case of 'The Blob'. See 
http://www.antipatterns.com/briefing/sld024.htm


From sjmachin at lexicon.net  Thu May 12 17:46:24 2005
From: sjmachin at lexicon.net (John Machin)
Date: Fri, 13 May 2005 07:46:24 +1000
Subject: Problems with csv module
References: <d5sngn$l4$03$1@news.t-online.com>
	<mailman.338.1115809896.29826.python-list@python.org>
	<d5spph$ktm$01$1@news.t-online.com>
	<a4r381p3s5uhud58tvd2m2nod1ebmo48u0@4ax.com>
	<d5tc55$q3e$1@sea.gmane.org>
	<17026.15830.303909.792010@montanaro.dyndns.org>
	<mailman.386.1115834572.29826.python-list@python.org>
	<4n8581hlta0e1jbp0nidliuam6fmb08nv1@4ax.com>
	<86psvxkpuf.fsf@guru.mired.org>
Message-ID: <pvi781p9tmhgtg60a5ji6no58rnl113ltt@4ax.com>

On Wed, 11 May 2005 23:52:56 -0500, Mike Meyer <mwm at mired.org> wrote:

>John Machin <sjmachin at lexicon.net> writes:
>> The CSV format is not defined at all, AFAIK.
>
>Just for the record, <URL:
>http://www.ietf.org/internet-drafts/draft-shafranovich-mime-csv-05.txt
>
"  Bletch"   ,"""    Bletch""",   "Bletch   "

Fortunately, being a draft, it's not "for the record". 

Anyway, thanks for pointing that out.


>. You'll also see application that deal with the application/csv MIME
>type.

I'm sorry; my parser's on the fritz: I'll see (when? where?) what
application(s?) that deal with the (proposed?) MIME type?




From elie at flashmail.com  Mon May 16 05:36:30 2005
From: elie at flashmail.com (Eli)
Date: 16 May 2005 02:36:30 -0700
Subject: Calling PySys_WriteStdout from embedded Python
Message-ID: <1116236190.374153.17130@g14g2000cwa.googlegroups.com>

Hello all,
I'm embedding Python in my C application. The application makes several
calls to PySys_WriteStdout from the main thread and so far it's ok.
A problem occurs when I'm creating another thread (in Windows with
CreateThread) and trying to call PySys_WriteStdout from there; at the
first try it crashed.

I've added some locking calls and now the code looks like this (from
the thread):
PyEval_AcquireLock();
PyThreadState *interp = Py_NewInterpreter();
PyThreadState_Swap(interp);

PySys_WriteStdout("write somthing...");

PyEval_ReleaseThread(interp);
PyEval_ReleaseLock();

Well the code does not crash now, but it doesn't display anything in
Python's console. If I call PySys_WriteStdout from the main thread it
does display alright.

Any ideas how I can get PySys_WriteStdout to work within a thread?
tnanks,
Eli



From richardjones at optushome.com.au  Sun May 15 21:54:39 2005
From: richardjones at optushome.com.au (richard)
Date: Mon, 16 May 2005 11:54:39 +1000
Subject: problem uploading ZIP file tp PyPI
References: <spsb81hia4m5n136tp0sgpuldd0gon555m@4ax.com>
Message-ID: <4287fd5e$0$4655$afc38c87@news.optusnet.com.au>

John Machin wrote:
> Sorry in advance if this is not the correct forum ...

Quite. The support link for PyPI is in the sidebar of the site.


> I'm trying to upload what appears to be a perfectly OK zip file as a
> "source" file type to PyPI, and am getting this response:
> 
> Error...
> There's been a problem with your request
> exceptions.ValueError: invalid distribution file

The *only* valid (perfectly OK) source file to upload is a Source
Distribution as generated by the "sdist" setup.py command.


> I have managed to upload a Windows installer, and downloaded it again
> [but the download count is still stuck on zero].

The download counts are updated daily (IIRC).


    Richard



From steven.bethard at gmail.com  Sat May 14 16:46:58 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Sat, 14 May 2005 14:46:58 -0600
Subject: A new to Python question
In-Reply-To: <b_udnUJIuPqb_hvfRVn-hw@comcast.com>
References: <1116088663.428932.130860@g43g2000cwa.googlegroups.com>
	<rfnhl2-ig5.ln1@Bernd.Nawothnig.dialin.t-online.de>
	<1116093118.599403.35940@g14g2000cwa.googlegroups.com>
	<tsKdnfF2xaKu3BvfRVn-iQ@comcast.com>
	<1116102355.715816.192840@z14g2000cwz.googlegroups.com>
	<b_udnUJIuPqb_hvfRVn-hw@comcast.com>
Message-ID: <b_udnX1IuPoi_hvfRVn-hw@comcast.com>

Steven Bethard wrote:
> 
> I don't know the implementation enough to know whether or not a tuple is 
> actually created when "b" and "c" are bound to their values, but I'd be 
> willing to bet that whatever happens to "(b, c)" is exactly the same as 
> what happens to "b, c".

Some corroborating evidence:

py> def f(t):
...     (b, c) = t
...
py> def g(t):
...     b, c = t
...
py> import dis
py> dis.dis(f)
   2           0 LOAD_FAST                0 (t)
               3 UNPACK_SEQUENCE          2
               6 STORE_FAST               2 (b)
               9 STORE_FAST               1 (c)
              12 LOAD_CONST               0 (None)
              15 RETURN_VALUE
py> dis.dis(g)
   2           0 LOAD_FAST                0 (t)
               3 UNPACK_SEQUENCE          2
               6 STORE_FAST               2 (b)
               9 STORE_FAST               1 (c)
              12 LOAD_CONST               0 (None)
              15 RETURN_VALUE

They're both an UNPACK_SEQUENCE byte-code.

STeVe


From listserver at tdw.net  Wed May 11 11:06:58 2005
From: listserver at tdw.net (Tim Williams)
Date: Wed, 11 May 2005 16:06:58 +0100
Subject: reg mail sending without smtp module
References: <20050511140612.47363.qmail@web8406.mail.in.yahoo.com>
	<4282191C.90506@plus.net>
Message-ID: <03c201c5563b$259be4c0$5aeda8c0@twilliams>

----- Original Message ----- 
From: "John Abel" <jabel at plus.net>


> praba kar wrote:
>
> >Dear All,
> >
> >         Is it possible to send a message as a mail
> >with out smtplib module?  If you find out any module
> >for mail sending(without smtplib) kindly mail me.
> >
> >regards
> >Prabahar
> >
>
> socket
>

Telnetlib,   though you will effectively have to write your own SMTP client
(ie your own version of smtplib).

Why don't you want to use smtplib ?

:)



From anton.vredegoor at gmail.com  Wed May 18 08:01:17 2005
From: anton.vredegoor at gmail.com (Anton Vredegoor)
Date: 18 May 2005 05:01:17 -0700
Subject: Python on a public library computer
In-Reply-To: <861x858qav.fsf@guru.mired.org>
References: <1116069664.779281.320540@g47g2000cwa.googlegroups.com>
	<87r7g6rbz0.fsf@pobox.com>
	<mailman.67.1116286093.8733.python-list@python.org>
	<1116330665.197293.198950@o13g2000cwo.googlegroups.com>
	<861x858qav.fsf@guru.mired.org>
Message-ID: <1116417677.506240.261730@g47g2000cwa.googlegroups.com>

Mike Meyer wrote:

> > Sorry, no telnet. Every executable that is not listed is blocked.
>
> You sure? IE used to understand telnet: URLs, and would open a
console
> window talking to the remote end. It may have been doing it with an
> external application, in which case this won't help you.

Yes, I'm sure. At least now I am. I just did a "telnet://localhost" and
there was an error message from the appguard stating that "telnet.exe"
wasn't allowed to run.

Since some posters keep replying as if I just could install this here
or run that there (from a memory stick for example) I will say
something about what kind of solution I want.

I have little doubt that I could find a way to pass the security system
here if I really wanted that. The printing routine allows printing to a
file and has a filebrowser that can see all the 'forbidden'
directories. Also everytime someone prints anything around here the
complete network freezes for about half a minute so there's little
doubt that we have a high priority process here.

However that's *not* what I want (not saying that's what you think I
want, just speaking to the third person in general here). What I want
is to use the principle of flowing around the obstacle, leaving the
blocking instance out of the loop thereby "punishing" it for it's own
stupidity. It's the way internet works.

So if a telnet is offered I use it. If I have to create a webform on
*another* computer that I can access from here and which looks like a
telnet command line, that would be ok too.

So far I have received a valuable tip about a javabased terminal which
would in the end enable me to log in to some other computer and from
there I could possibly start a python interpreter session.

This also makes me think it should be possible to load a java based
python somehow. Maybe from a java text editor that can run jython?
However jython implies running jview.exe or at least some other java
interpreter? But then how does this ssh terminal run java?

It's a thin line between philosophy, fear of breaking the rules and
having the security personnel throw me out of here, and trying to live
in a just world.

Assume I can't or won't run .exe that are blacklisted. Any way to start
a python interpreter? This is a python challenge too isn't it :-)

Anton

'this parrot.exe is dead'



From fredrik at pythonware.com  Mon May 16 02:44:32 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Mon, 16 May 2005 08:44:32 +0200
Subject: Importing and namespace visibility
References: <1116198993.514542.96350@g44g2000cwa.googlegroups.com>
Message-ID: <d69ffq$9mb$1@sea.gmane.org>

"jean-marc" wrote:

> BUT, of all this I thought that if you import module1, then module2
> (into __main__), objects from module1 would be available to objects of
> module2 which came (into memory space) after module1 was loaded. This
> does not seem to be the case, and module2 requires an 'import module1'
> statement in its own file to see this last module's objects.  This is
> not the recursive situation that was a pitfall Fredrik was evoking.
> What am I missing here???

importing something into a module only makes the names available in
that module, not in every other module.  (import is not some kind of
global include).  for the details, read the "There are Many Ways to
Import a Module" section under:

    http://effbot.org/zone/import-confusion.htm

(and as mentioned under "What Does Python Do to Import a Module",
importing a module twice doesn't load the module again; it only makes
the name(s) available to the importing module).

reading the following sections in the language reference may also help:

    http://docs.python.org/ref/naming.html
    http://docs.python.org/ref/import.html

</F>





From phillip.watts at anvilcom.com  Mon May  2 13:53:12 2005
From: phillip.watts at anvilcom.com (phil)
Date: Mon, 02 May 2005 12:53:12 -0500
Subject: Canvas drawing slow
Message-ID: <42766908.5040200@anvilcom.com>

I'm mapping quadratic equations on a Canvas.
But that's irrelevant, the point is I am drawing
a lot of points in a loop without returning to
mainloop until the end.  I want my students to see the
drawing progress, so I call update_idletasks() after
each tiny rectangle. ( I use to call update() and it
seems to make no difference)

This is so fast at first I am tempted to put a sleep(.01) in the
loop.  But after a few thousand points it starts to slow down
dramatically.  WHy?  I thought udate_idletasks would only redraw
the 'damaged' portion.
Maybe my approach is wrong.

I was hoping to use Canvas to do some simple instructional
animation, but not if I can't solve this mystery.

Any help appreciated.


BTW: I posted a couple days ago about rotating objects making
the item stack grow.  My bad, debugging bug, fixed it.



From kay.schluehr at gmx.net  Sun May  1 01:46:21 2005
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: 30 Apr 2005 22:46:21 -0700
Subject: ANN: pynetwork 2.25
In-Reply-To: <1114902816.077510.229560@l41g2000cwc.googlegroups.com>
References: <1114902816.077510.229560@l41g2000cwc.googlegroups.com>
Message-ID: <1114926381.493979.177780@l41g2000cwc.googlegroups.com>


bearophileH... at lycos.com wrote:
> Pynetwork is a graph library, my first SourceForge project:
>
> http://sourceforge.net/projects/pynetwork/
>
> It included tests, some demo, some premilinary docs, and some images.
> You can see some screenshoots on the SourceForge page for them.
> I know about 5-6 other graph libraries for Python, one even in C++
> (Boost).

What is wrong with the other librarys that they can't be approved?

Kay



From steven.bethard at gmail.com  Wed May  4 20:51:54 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Wed, 04 May 2005 18:51:54 -0600
Subject: how can I sort a bunch of lists over multiple fields?
In-Reply-To: <1115244068.789209.225120@f14g2000cwb.googlegroups.com>
References: <1114623282.855415.132040@l41g2000cwc.googlegroups.com>
	<1114634355.348110.141690@o13g2000cwo.googlegroups.com>
	<EYednbmZKbHHZ_LfRVn-gA@comcast.com>
	<1114710873.292998.128090@f14g2000cwb.googlegroups.com>
	<1114714105.582253.12150@f14g2000cwb.googlegroups.com>
	<uIydnXD17Z2c2-zfRVn-2A@comcast.com>
	<1114724023.743271.275710@g14g2000cwa.googlegroups.com>
	<S8qdneMehej_CezfRVn-rg@comcast.com>
	<1114796569.028242.45700@o13g2000cwo.googlegroups.com>
	<Do6dnTrNEaMLnOTfRVn-hw@comcast.com>
	<1115244068.789209.225120@f14g2000cwb.googlegroups.com>
Message-ID: <aumdnQq3Sbyx8-TfRVn-rA@comcast.com>

Lonnie Princehouse wrote:
> Right, but suppose it's expensive to generate each part of the key -
> e.g. a database query or some kind of hash, so it doesn't make sense to
> compute the whole key in advance if the first part is sufficient to
> establish an ordering most of the time.   This is what I had in mind (I
> should have been more clear about that)

Yeah, that's probably a reasonable use case for the cmp= argument, as is 
any case where you're *really* tight for memory (the key= sort requires 
small extra auxiliary structures to hold the key values).

For newbies though, I still suspect that key= is the easiest and fastest 
answer to most sorting problems.  Advanced users will, of course, need 
more advanced techniques. =)

STeVe


From dalke at dalkescientific.com  Thu May 12 11:53:11 2005
From: dalke at dalkescientific.com (Andrew Dalke)
Date: Thu, 12 May 2005 15:53:11 GMT
Subject: pyvm -- faster python
References: <mailman.164.1115548611.29826.python-list@python.org>
	<1115561483.741761.212140@f14g2000cwb.googlegroups.com>
	<m102l2-9qr.ln1@home.rogerbinns.com>
	<mailman.264.1115716603.29826.python-list@python.org>
	<vu38l2-k5v.ln1@home.rogerbinns.com>
	<7xvf5qbir1.fsf@ruckus.brouhaha.com>
	<nt98l2-1e.ln1@home.rogerbinns.com>
	<7xpsvymlse.fsf@ruckus.brouhaha.com>
	<1115791624.856252.247890@z14g2000cwz.googlegroups.com>
	<7x1x8el18e.fsf@ruckus.brouhaha.com>
	<3eg2vnF2psplU1@individual.net>
	<7xis1pqdt0.fsf@ruckus.brouhaha.com>
Message-ID: <pan.2005.05.12.15.53.10.176970@dalkescientific.com>

Paul Rubin wrote:
> Yes, there are several Python compilers already
     ...
> It's true that CPython doesn't have a compiler and that's a serious
> deficiency.  A lot of Python language features don't play that well
> with compilation, and that's often unnecessary.  So I hope the baseline
> implementation changes to a compiled one before the language evolves
> too much more.

Years ago, presented at one of the Python conferences, was a
program to generate C code from the byte code.  It would still
make calls to the Python run-time library (just as C does to
its run-time library).

The presenter did some optimizations, like not decref at the
end of one instruction when the next immediately does an incref
to it.  The conclusion I recall was that it wasn't faster -
at best a few percent - and there was a big memory hit because
of all the duplicated code.  One thought was that the cache miss
caused some of the performance problems.

Does that count as a compiler?

				Andrew
				dalke at dalkescientific.com



From martin at v.loewis.de  Sun May  8 05:23:49 2005
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Sun, 08 May 2005 11:23:49 +0200
Subject: Trouble saving unicode text to file
In-Reply-To: <1115500976.571232.76100@z14g2000cwz.googlegroups.com>
References: <1115500976.571232.76100@z14g2000cwz.googlegroups.com>
Message-ID: <427DDAA5.9020606@v.loewis.de>

Svennglenn wrote:
> # -*- coding: cp1252 -*-
> 
> titel = "???"
> titel = unicode(titel)

Instead of this, just write

# -*- coding: cp1252 -*-

titel = u"???"

> fil = open("testfil.txt", "w")
> fil.write(titel)
> fil.close()

Instead of this, write

import codecs
fil = codecs.open("testfil.txt", "w", "cp1252")
fil.write(titel)
fil.close()

Instead of cp1252, consider using ISO-8859-1.

Regards,
Martin


From rkern at ucsd.edu  Wed May 11 09:26:02 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Wed, 11 May 2005 06:26:02 -0700
Subject: Python Graphing Utilities.
In-Reply-To: <797fe3d4050511061258bb8302@mail.gmail.com>
References: <-dadnS0X7IVccR3fRVn-uQ@entouch.net>	<797fe3d405051010392c00011f@mail.gmail.com>	<mailman.320.1115772826.29826.python-list@python.org>	<87psvycqej.fsf@wilson.rwth-aachen.de>	<mailman.340.1115812092.29826.python-list@python.org>	<87mzr2f01r.fsf@wilson.rwth-aachen.de>
	<797fe3d4050511061258bb8302@mail.gmail.com>
Message-ID: <d5t0n4$ct1$2@sea.gmane.org>

Bill Mill wrote:

> Tha's cool, I saw what you wrote. First off, I wasn't sure what you
> meant by "hardcopy", so I thought I'd let you know that matplotlib has
> PS output. Second, the page I linked to talks about all the font-type
> features of matplotlib, which I thought might interest you. Having not
> gotten funky with them, I cannot vouch for their quality.

They're not TeX-quality. Yet.

A pslatex backend certainly would be interesting. A Gnuplot backend 
would probably not be feasible. Does it expose its raw drawing operations?

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From pdemb at gazeta.pl  Mon May 23 15:00:06 2005
From: pdemb at gazeta.pl (Peter Dembinski)
Date: Mon, 23 May 2005 21:00:06 +0200
Subject: What are OOP's Jargons and Complexities?
References: <1116843761.619249.144790@g47g2000cwa.googlegroups.com>
Message-ID: <87ll65zs21.fsf@hector.domek>

"Xah Lee" <xah at xahlee.org> writes:

[snap]

put it on your blog

-- 
http://www.peter.dembinski.prv.pl


From philippe at philippecmartin.com  Sat May 28 17:38:24 2005
From: philippe at philippecmartin.com (Philippe C. Martin)
Date: Sat, 28 May 2005 21:38:24 GMT
Subject: scipy for python 2.4
References: <1117314382.677584.133160@o13g2000cwo.googlegroups.com>
	<mailman.223.1117315996.18027.python-list@python.org>
Message-ID: <kx5me.3504$4N2.1634@newssvr30.news.prodigy.com>

In order to help, I just tried to compile it, and it seems to have a bunch
of dependencies to worry about: 


[root at pcmsc SciPy_complete-0.3.2]# python setup.py install
fftw_info:
  NOT AVAILABLE

dfftw_info:
  NOT AVAILABLE


    FFTW (http://www.fftw.org/) libraries not found.
    Directories to search for the libraries can be specified in the
    scipy_distutils/site.cfg file (section [fftw]) or by setting
    the FFTW environment variable.
djbfft_info:
  NOT AVAILABLE


    DJBFFT (http://cr.yp.to/djbfft.html) libraries not found.
    Directories to search for the libraries can be specified in the
    scipy_distutils/site.cfg file (section [djbfft]) or by setting
    the DJBFFT environment variable.
blas_opt_info:
atlas_blas_threads_info:
scipy_distutils.system_info.atlas_blas_threads_info
  NOT AVAILABLE

atlas_blas_info:
scipy_distutils.system_info.atlas_blas_info
  NOT AVAILABLE

scipy_core/scipy_distutils/system_info.py:982: UserWarning:
    Atlas (http://math-atlas.sourceforge.net/) libraries not found.
    Directories to search for the libraries can be specified in the
    scipy_distutils/site.cfg file (section [atlas]) or by setting
    the ATLAS environment variable.
  warnings.warn(AtlasNotFoundError.__doc__)
blas_info:
  NOT AVAILABLE

scipy_core/scipy_distutils/system_info.py:991: UserWarning:
    Blas (http://www.netlib.org/blas/) libraries not found.
    Directories to search for the libraries can be specified in the
    scipy_distutils/site.cfg file (section [blas]) or by setting
    the BLAS environment variable.
  warnings.warn(BlasNotFoundError.__doc__)
blas_src_info:
  NOT AVAILABLE

scipy_core/scipy_distutils/system_info.py:994: UserWarning:
    Blas (http://www.netlib.org/blas/) sources not found.
    Directories to search for the sources can be specified in the
    scipy_distutils/site.cfg file (section [blas_src]) or by setting
    the BLAS_SRC environment variable.
  warnings.warn(BlasSrcNotFoundError.__doc__)
  NOT AVAILABLE

Traceback (most recent call last):
  File "setup.py", line 111, in ?
    setup_package(ignore_packages)
  File "setup.py", line 85, in setup_package
    ignore_packages = ignore_packages)
  File "scipy_core/scipy_distutils/misc_util.py", line 475, in
get_subpackages
    config = setup_module.configuration(*args)
  File
"/home/philippe/downloaded/SciPy_complete-0.3.2/Lib/integrate/setup_integrate.py",
line 22, in configuration
    raise NotFoundError,'no blas resources found'
scipy_distutils.system_info.NotFoundError: no blas resources found


Robert Kern wrote:

> querypk at gmail.com wrote:
>> Did anyone try to install Scipy package on python2.4 linux version. I
>> see only python2.3 version of scipy released. When I try to install I
>> get an dependency warning saying scipy cannot find python2.3.
>> 
>> Can someone point me to python2.4 version of scipy and help me install.
> 
> scipy.org has not yet released binaries for Python 2.4. It will compile
> from source just fine, though. Someone may have also released binary
> packages for your particular platform, but since you don't mention which
> one that is, we can't help you with that, yet.
> 



From lee_cullens at mac.com  Wed May  4 08:00:55 2005
From: lee_cullens at mac.com (Lee Cullens)
Date: Wed, 4 May 2005 08:00:55 -0400
Subject: Regular Expression tools?
Message-ID: <52cfdb3784bf834627ab6b767f2016bc@mac.com>

Tim Henderson:
> I am not quite sure what you want. However if you are looking for
> Python's regular expression module it is the re module. Just go to
> interactive help and view the api for it.

Thanks Tim,

I found RegexPlor - not as full as I was thinking of, but it does the 
job.

Lee C



From bokr at oz.net  Sun May 15 03:29:58 2005
From: bokr at oz.net (Bengt Richter)
Date: Sun, 15 May 2005 07:29:58 GMT
Subject: Modifying a built-in function for logging purposes
References: <1116098593.970438.219860@g47g2000cwa.googlegroups.com>	<Lcthe.1234$Ri4.1175@newsread1.news.pas.earthlink.net>
	<1116108841.429602.257380@o13g2000cwo.googlegroups.com>
	<mailman.3.1116123576.15315.python-list@python.org>
Message-ID: <4286e1b4.207673268@news.oz.net>

On Sat, 14 May 2005 19:19:08 -0700, Robert Kern <rkern at ucsd.edu> wrote:

>qwweeeit at yahoo.it wrote:
>> Hi Greg,
>> thank for your replay, but I didn't succeed in any way. You must
>> consider however that I'm not a Python "expert"...
>> IMHO, it must be a script that change part of the interpreter, and
>> substitute a new module (py) in the place of the standard one (py or
>> pyc). The standard module must be saved in order to be able to undo the
>> changes and go back to the normal behaviour.
>> The problem is that I don't know if the built-in functions like open
>> (or file) are written in Python or in C and, besides that, if they can
>> be modified.
>
>Short answer: if you don't know stuff like this, then you probably 
>shouldn't mess around with the builtins in production code.
>
>Depending on your operating system, there are probably programs that let 
>you list all of the files that have been opened on your system. For 
>example, on OS X, lsof(1) does the trick.
>
>> Other solutions which modify the source to be logged, are not
>> solutions, because it is far simpler to introduce here and there print
>> statements... 
>
Playing with this a little:

----< logopen.py >---------------------------------------
import sys, time

class OpenLogger(object):
    def __init__(self, logfile=sys.stdout):
        self.logfile = logfile
        self.old_open = __builtins__.open
    def open(self, path, *mode):
        openargs = ', '.join(map(repr, mode and [path, mode[0]] or [path]))
        tt = time.time()
        thdr = '%s.%02d' % (time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(tt)), int(tt*100)%100) 
        print >> self.logfile, '%s: open(%s) called from %r in "%s" line %s' % ((thdr, openargs) + 
            [(f.f_code.co_name, f.f_code.co_filename, f.f_lineno) for f in [sys._getframe(1)]][0])
        return self.old_open(path, *mode)
    def on(self):
        __builtins__.open = self.open
    def off(self):
        __builtins__.open = self.old_open

def main(*logfile):
    logger = OpenLogger(*logfile)
    try:
        logger.on()
        script_to_monitor = sys.argv[1]
        sys.argv[0:] = sys.argv[1:]
        xdict = dict(__builtins__=__builtins__, __name__='__main__')
        execfile(script_to_monitor, xdict)
    finally:
        logger.off()

if __name__ == '__main__':
    if not sys.argv[2:]: raise SystemExit, """
        Usage: [python] logopen.py [-log logfile] script_to_monitor [script_to_monitor args]"""
    logfile = sys.argv[1] == '-log' and sys.argv.pop(1) and [open(sys.argv.pop(1), 'a')] or []
    main(*logfile)
---------------------------------------------------------

A script whose opens we can monitor, that opens a file from module and function scope:
----< pnlines.py >---------------------------------------
import sys
print '----< %r' % sys.argv[1]
for i, line in enumerate(open(sys.argv[1], 'r')):
    print '%4s: %s' %(i+1, line.rstrip())

def foo(nlines=1):
    for i, line in enumerate(open(sys.argv[1])):    # test default 'r'
        print '%4s: %s' %(i+1, line.rstrip())
        if i+1 >= nlines: break
print '----< 3 lines of %r' % sys.argv[1]
foo(3)
---------------------------------------------------------

Result (tested only as as far as you see here):

[ 0:23] C:\pywk\clp>del logopen.txt
Could Not Find C:\pywk\clp\logopen.txt

[ 0:23] C:\pywk\clp>py24 logopen.py

        Usage: [python] logopen.py [-log logfile] script_to_monitor [script_to_monitor args]

Ok, so we pass pnlines.py as the file for it itself to print:

[ 0:23] C:\pywk\clp>py24 logopen.py -log logopen.txt pnlines.py pnlines.py
----< 'pnlines.py'
   1: import sys
   2: print '----< %r' % sys.argv[1]
   3: for i, line in enumerate(open(sys.argv[1], 'r')):
   4:     print '%4s: %s' %(i+1, line.rstrip())
   5:
   6: def foo(nlines=1):
   7:     for i, line in enumerate(open(sys.argv[1])):    # test default 'r'
   8:         print '%4s: %s' %(i+1, line.rstrip())
   9:         if i+1 >= nlines: break
  10: print '----< 3 lines of %r' % sys.argv[1]
  11: foo(3)
  12:
----< 3 lines of 'pnlines.py'
   1: import sys
   2: print '----< %r' % sys.argv[1]
   3: for i, line in enumerate(open(sys.argv[1], 'r')):

[ 0:24] C:\pywk\clp>type logopen.txt
2005-05-15 00:24:06.55: open('pnlines.py', 'r') called from '?' in "pnlines.py" line 3
2005-05-15 00:24:06.55: open('pnlines.py') called from 'foo' in "pnlines.py" line 7

Maybe the OP can build on this and contribute back something more useful and tested ;-)

Regards,
Bengt Richter


From dalke at dalkescientific.com  Wed May 11 20:14:48 2005
From: dalke at dalkescientific.com (Andrew Dalke)
Date: Thu, 12 May 2005 00:14:48 GMT
Subject: optparse
References: <1115841250.764632.296820@g47g2000cwa.googlegroups.com>
	<sPKdnV13ANzA9B_fRVn-iQ@comcast.com>
	<1115843600.174250.16770@f14g2000cwb.googlegroups.com>
	<w7ednaqywpQj8h_fRVn-3Q@comcast.com>
Message-ID: <pan.2005.05.12.00.14.50.561551@dalkescientific.com>

Steven Bethard wrote:
> Well one reason might be that it's easy to convert from an object's 
> attributes to a dict, while it's hard to go the other direction:
  ...
> py> options['x'], options['y']
> ('spam', 42)
> py> o = ??? # convert to object???
> ...
> py> o.x, o.y
> ('spam', 42)

"hard" == "slightly less easy"?

class Spam:
  def __init__(self, d):
    self.__dict__.update(d)

then

  o = Spam(options)

or use the types module (if you have a classic class)

>>> import types
>>> class Spam: pass
... 
>>> o = types.InstanceType(Spam, {"x": 5, "y": 10})
>>> o.x
5
>>> 

My guess is the original intent was to make the command-line
parameters act more like regular variables.  They are easier
to type (x.abc vs. x["abc"]) and the syntax coloring is different.


				Andrew
				dalke at dalkescientific.com



From rschroev_nospam_ml at fastmail.fm  Mon May 30 16:56:22 2005
From: rschroev_nospam_ml at fastmail.fm (Roel Schroeven)
Date: Mon, 30 May 2005 20:56:22 GMT
Subject: Case Sensitive, Multiline Comments
In-Reply-To: <mailman.261.1117484784.18027.python-list@python.org>
References: <1117137316.140791.210430@g14g2000cwa.googlegroups.com>	<z5adnQMsOLiL7AffRVn-hQ@comcast.com>	<mailman.256.1117477669.18027.python-list@python.org>	<d7fpbl$b1s$1@wake.carmen.se>
	<mailman.261.1117484784.18027.python-list@python.org>
Message-ID: <W5Lme.105911$Wl2.6373476@phobos.telenet-ops.be>


Benji York wrote:

> What I want to know is how Mangus wrote an entire message fully
> justified.  I looked for extra spaces and other cheats but only
> found a couple of superfluous exclamation marks.  Well done! He
> must be a justification wizard.  I wish I could do that too. :)

I hadn't even seen it at first, since I use a proportional font for 
reading my mail.

You haven't looked very well though: there are actually quite a lot of 
extra spaces. Still, it's nicely done indeed.

-- 
If I have been able to see further, it was only because I stood
on the shoulders of giants.  -- Isaac Newton

Roel Schroeven


From ccurvey at gmail.com  Sat May 14 08:46:29 2005
From: ccurvey at gmail.com (Chris Curvey)
Date: 14 May 2005 05:46:29 -0700
Subject: win32com and apache and permissions
Message-ID: <1116074789.027336.299290@g44g2000cwa.googlegroups.com>

I'm trying to have a Python script (which is being launched by Apache
as a CGI) control Internet Explorer.  I have this working on my
development box, but when I moved the code to my integration test box,
I get "Access Denied" when trying to launch IE.  This only seems to
happen when running Apache as a service.  If I run apache as a console
app, everything works fine.  In summary:

User             Method       Dev Box       Integration Box
Administrator    Console      Works         Works
Administrator    Service      Works         "Access Denied"
Apache           Console      Works         Works
Apache           Service      Not permitted Not permitted

So somewhere, somehow, I think I've granted some permission on the dev
box that I have not granted on the integration box.  Can anyone think
of what it might be?

-Chris



From xah at xahlee.org  Thu May  5 17:28:43 2005
From: xah at xahlee.org (Xah Lee)
Date: 5 May 2005 14:28:43 -0700
Subject: New Python regex Doc (was: Python documentation moronicities)
In-Reply-To: <1113908069.264676.207090@g14g2000cwa.googlegroups.com>
References: <1113301533.054410.203710@z14g2000cwz.googlegroups.com>
	<mailman.1813.1113355346.1799.python-list@python.org>
	<1113856843.023012.165500@l41g2000cwc.googlegroups.com>
	<1113908069.264676.207090@g14g2000cwa.googlegroups.com>
Message-ID: <1115328523.852744.110390@f14g2000cwb.googlegroups.com>

I have now also started to rewrite the re-syntax page. At first i
thought that page needs not to be rewritten, since its about regex and
not really involved with Python. But after another look, that page is
as incompetent as every other page of Python documentation.

The rewritten page is here:
http://xahlee.org/perl-python/python_re-write/lib/re-syntax.html

It's not complete, but is a start. The organization is largely taken
care of, except the last few paragraphs. The bottom half on capturing
and extension syntax i haven't started working on. In particular, they
need examples. The ?repetitions? section also needs to be examed.

here are few notes on this whole rewriting ordeal.

-------------------

In the doc, examples are often given in Python command line interface
format, e.g.

>>> def f(n):
...     return n+1
...
>>> f(1)
2

instead of:

def f(n):
  return n+1
print f(1)   # returns 2

the clean format should be used because it does not require familiarity
with Python command line, it is more readable, and the code can be
copied and run readily.

A significant portion of Python doc's readers, if not majority, didn't
come to Python as beginning programers, and or one way or another never
used or cared about the Python command line interface.

Suppose a non-Python programer is casually shown a page of Python doc.
She will get much more from the clean example than the version
cluttered with Python Command line interface irrelevancies.

Suppose now we have a experienced professional Python programer. Upon
reading the Python doc, she will also find examples in plain code much
more readable and familiar, than the version plastered with Python
Command line interface irrelevancies.

The only place where the Python command line look-and-feel is
appropriate is in the Python tutorial, and arguably only in the
beginning sections.

-----
Extra point: If the Python command line interface is actually a robust
application, like so-called IDE e.g. Mathematica front-end, then things
are very different. In reality, the Python command line interface is a
fucking toy whose max use is as a simplest calculator and double as a
chanting novelty for standard coding morons. In practice it isn't even
suitable as a trial'n'error pad for real-world programing.

Extra point: do not use the fucking stupid meaningless jargon
?interpreter?. 90% of its use in the doc should be deleted. They
should be replaced with "software", "program", "command line
interface", or "language" or others.

(I dare say that 50% of all uses of the word interpreter in computer
language contexts are inane. Fathering large amounts of
misunderstanding and confusion.)

-----
history of Python are littered all over the doc. e.g.
?Incompatibility note: in the original Python 1.5 release, maxsplit
was ignored. This has been fixed in later releases.?

99% of programers really don't need to give a flying fuck about the
history of a language. Inevitably software including languages change
over time, however conservative one tries to be. So, move all these
changes into a "New and Incompatible changes" page at some appendix of
the lang spec. This way, people who are maintaining older code, can
find their info and in one coherent place. While, the general
programers are not forced to wade thru the details of fuckups or
whatnot of the past in every few paragraphs. (few exceptions can be
made, when the change is a major fuckup that all practicing Python
coders really must be informed regardless whether they maintain old
code.)

------

do not take a attitude like you have to stick to some artificial format
or order or "correctness" in the doc. Remember, the doc's prime goal is
to communicate to programers how a language functions, not how it is
implemented or how technically or computer scientifically speaking.

In writing a language documentation, there is a question of how to
organize it. This is a issue of design, and it takes thinking.

When a doc writer is faced with such a challenge, the easiest route is
a no-brainer by following the way the language is implemented. For
example, the doc will start with ?data types? supported by the
language. This no-brainer stupidity is unfortunately how most language
docs are organized by, and the Python doc is one of the worst.

One can see this phenomenon in the official doc of Python's RE module.
For example, it begin with Regex Syntax, then it follows with ?Module
contents?, then Regex Objects, then Match Objects. And in each page,
the functions or methods are arranged in a alphabetical order. This is
typical of the no-brainers organization following how the module is
implemented or certain ?computer scientific logic?. It has remote
connection to how the module is used to perform a task.

In general, language docs should be organize by the tasks it is
supposed to accomplish, then by each module or function's
functionalities.

For example, the RE module doc, organize it by the purposes of the
module. To begin, we explain in the outset that this module is for the
purpose of search or replacing a string by a pattern. Then, we organize
with purpose and functionalities as guide.

Since Python provides a set of functions and a Object-Oriented set, we
create a page for each set, with a clear indication on how they relates
to the string pattern search/replace task. Since Python returns the
result as a special Object, we again create a section MatchObject and
clearly tells the reader what that page is about in relation to the
task. And, we also put the regex syntax on its own page, but again made
it clear what this page means in relation to the task. And in each
page, we again organize them by the guide of tasks and functionalities.
(for example, not alphabetical or some machinery logic) In this way,
the whole RE module doc is oriented to programing, not how this module
happens to be classified according to some Python idiosyncrasies or
categorization by some forced ?computer science? outlook.

The complete rewritten doc is here:
http://xahlee.org/perl-python/python_re-write/lib/module-re.html

-----

There were more issues and notes... but this will be it for today.

 Xah
 xah at xahlee.org
? http://xahlee.org/



From rkern at ucsd.edu  Tue May 17 08:08:44 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Tue, 17 May 2005 05:08:44 -0700
Subject: Python on a public library computer
In-Reply-To: <1116330665.197293.198950@o13g2000cwo.googlegroups.com>
References: <1116069664.779281.320540@g47g2000cwa.googlegroups.com>	<87r7g6rbz0.fsf@pobox.com>	<mailman.67.1116286093.8733.python-list@python.org>
	<1116330665.197293.198950@o13g2000cwo.googlegroups.com>
Message-ID: <d6cmr9$cdn$1@sea.gmane.org>

Anton Vredegoor wrote:
> Timothy Smith wrote:
> 
> 
>>how locked down is the computer? there's a few (brave) public access
>>unix shell providers out there. if you could run telnet you could use
> 
> them
> 
> Sorry, no telnet. Every executable that is not listed is blocked. For
> example I can download:
> 
> http://prdownloads.sourceforge.net/scintilla/Sc1.exe
> 
> but if I run it I get two error messages:
> 
> a) a 15 seconds "appguard" message
> 
> b} 'access to the specified device, path or file is denied'

There is a Java SSH client that runs in the browser.

http://www.oit.duke.edu/sa/security/ssh.html

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From theller at python.net  Tue May 24 11:16:54 2005
From: theller at python.net (Thomas Heller)
Date: Tue, 24 May 2005 17:16:54 +0200
Subject: py2exe for WMI
In-Reply-To: <mailman.52.1116945242.18027.python-list@python.org>
References: <mailman.52.1116945242.18027.python-list@python.org>
Message-ID: <42934566.8070700@python.net>

Tim Golden schrieb:
> | Hello All.
> |   I'm trying to 'compile-to-EXE' a python program which uses 
> | Win32 & WMI to
> | pull system info. from the PC such as serial number, CPU 
> | speed, etc.  I'm
> | having problems with py2exe -- with regard to Win2000 & WinXP 
> | platforms.  It
> | seems that the program only works if I have one typelib for 
> | WinXP and a
> | slightly different one for Win2000.  Here is my relevent 
> | section from the
> | py2exe setup.py:
> 
> [... snipped ...]
> 
> | Can anyone tell me how I might make one unified py2exe 
> | setup.py that'll
> | 'compile' for both Win2000 & WinXP?
> | 
> | If not, can someone give me a hint as to how I can have a 
> | python 'launcher'
> | which can determine the difference between Win2000 & WinXP?  Using the
> | sys.platform, they both show as Win32.
> | 
> | Thanks!
> | Dave
> 
> There was a thread about this on the python-win32 list a 
> while back. I think this is the start of the the thread
> (altho' it's a bit confusing). The conclusion seems to
> be that there's no conclusion. Maybe there's more info
> on the py2exe list/wiki?
> 
> http://aspn.activestate.com/ASPN/Mail/Message/Python-win32/2007557
> 
I don't think something wnet into the wiki, unfortunately.
The OP of the thread Tim mentions here already had a solution, if I 
understood him correctly, and the other things that were suggested 
didn't work.  Basically, IIUC, he did add the typelib wrappers from the 
'other' windows version manually to the library.zip file.

Totally different solutions would be:
- change Tim's wmi.py module so that it works with dynamic binding (no 
typelib wrappers needed)
or
- change win32com so that the typelib wrappers can be generated by 
frozen executables at runtime.

Thomas


From zanesdad at bellsouth.net  Mon May  9 10:54:22 2005
From: zanesdad at bellsouth.net (Jeremy Jones)
Date: Mon, 09 May 2005 10:54:22 -0400
Subject: file corruption on windows - possible bug
Message-ID: <427F799E.2080002@bellsouth.net>

I've written a piece of code that iterates through a list of items and
determines the filename to write some piece of data to based on
something in the item itself.  Here is a small example piece of code to
show the type of thing I'm doing::

#################################
file_dict = {}

a_list = [("a", "a%s" % i) for i in range(2500)]
b_list = [("b", "b%s" % i) for i in range(2500)]
c_list = [("c", "c%s" % i) for i in range(2500)]
d_list = [("d", "d%s" % i) for i in range(2500)]


joined_list = a_list + b_list + c_list + d_list

for key, value in joined_list:
    outfile = file_dict.setdefault(key, open("%s.txt" % key, "w"))
    outfile.write("%s\n" % value)

for f in file_dict.values():
    f.close()
#################################

Problem is, when I run this on Windows, I get 14,520 null ("\x00")
characters at the front of the file and each file is 16,390 bytes long. 
When I run this script on Linux, each file is 13,890 bytes and contains
no "\x00" characters.  This piece of code::

#################################
import cStringIO

file_dict = {}

a_list = [("a", "a%s" % i) for i in range(2500)]
b_list = [("b", "b%s" % i) for i in range(2500)]
c_list = [("c", "c%s" % i) for i in range(2500)]
d_list = [("d", "d%s" % i) for i in range(2500)]


joined_list = a_list + b_list + c_list + d_list

for key, value in joined_list:
    #outfile = file_dict.setdefault(key, open("%s.txt" % key, "w"))
    outfile = file_dict.setdefault(key, cStringIO.StringIO())
    outfile.write("%s\n" % value)

for key, io_string in file_dict.items():
    outfile = open("%s.txt" % key, "w")
    io_string.seek(0)
    outfile.write(io_string.read())
    outfile.close()
#################################

results in files containing 16,390 bytes and no "\x00" characters on
Windows and 13,890 bytes on Linux and no "\x00" characters (file size
difference on Windows and Linux is due to line ending).  I'm still doing
a setdefault on the dictionary to create an object if the key doesn't
exist, but I'm using a cStringIO object rather than a file object.  So,
I'm treating this just like it was a file and writing it out later.

Does anyone have any idea as to why this is writing over 14,000 "\x00"
characters to my file to start off with where printable characters
should go and then writing the remainder of the file correctly? 


Jeremy Jones


From fredrik at pythonware.com  Sat May 28 10:23:56 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Sat, 28 May 2005 16:23:56 +0200
Subject: unbuffering std streams in code
References: <slrnd9fi1m.aod.jtr@ofb.net>
Message-ID: <d79upj$g53$1@sea.gmane.org>

John Reese wrote:

> You know how you can specify that stderr, stdin, stdout should be
> unbuffered by running python with the -u switch?  Is there any way I
> can have the same affect in code by doing something to the sys.std*
> variables?

try this:

>>> import os, sys
>>> sys.stdout = os.fdopen(sys.stdout.fileno(), sys.stdout.mode, 0)

(repeat for the other streams)

(-u does a bit more than this on some platforms, but the above
should be good enough for many purposes)

</F>





From pinard at iro.umontreal.ca  Sun May 15 21:41:34 2005
From: pinard at iro.umontreal.ca (=?iso-8859-1?Q?Fran=E7ois?= Pinard)
Date: Sun, 15 May 2005 21:41:34 -0400
Subject: German spam event [was: Re: Schily ueber Deutschland]
In-Reply-To: <7x3bso6y4c.fsf@ruckus.brouhaha.com>
References: <mailman.22.1116170676.15315.python-list@python.org>
	<hpfkl2-303.ln1@Bernd.Nawothnig.dialin.t-online.de>
	<7x3bso6y4c.fsf@ruckus.brouhaha.com>
Message-ID: <20050516014134.GA17709@alcyon.progiciels-bpi.ca>

[Paul Rubin]

> I don't think that post was really from MAL.  It seems to be a
> sporgery attack on the newsgroup.  Sigh.

For the last two days, I receive quite an amount of robotic rejects,
after my name was used as the forged From: for an apparently massive
spam invoice written in German.  At the same time, I noticed an increase
of German-written spam filtering through a few lists I'm subscribed to,
and the Python list among others.

Such forged From appears all the time as far as I am concerned, and had
for years now.  But something significant happened this weekend.

-- 
Fran?ois Pinard   http://pinard.progiciels-bpi.ca


From exarkun at divmod.com  Sun May  8 15:11:43 2005
From: exarkun at divmod.com (Jp Calderone)
Date: Sun, 08 May 2005 19:11:43 GMT
Subject: A question about inheritance
In-Reply-To: <1115579277.999256.269960@f14g2000cwb.googlegroups.com>
Message-ID: <20050508191143.15422.2029774665.divmod.quotient.26426@ohm>

On 8 May 2005 12:07:58 -0700, arserlom at gmail.com wrote:
>Hello I have a question about inheritance in Python. I'd like to do
>something like this:
>
> class cl1:
>  def __init__(self):
>   self.a = 1
>
> class cl2(cl1):
>  def __init__(self):
>   self.b = 2
>
>But in such a way that cl2 instances have atributes 'b' AND 'a'.
>Obviously, this is not the way of doing it, because the __init__
>definition in cl2 overrides cl1's __init__.
>
>Is there a 'pythonic' way of achieving this?

    class cl2(cl1):
        def __init__(self):
            cl1.__init__(self)
            self.b = 2

  Jp


From csw at k12hq.com  Fri May 27 18:27:26 2005
From: csw at k12hq.com (Christopher Weimann)
Date: Fri, 27 May 2005 18:27:26 -0400
Subject: write to the same file from multiple processes at the same time?
In-Reply-To: <ytSdnaFbdrq5BArfRVn-ig@powergate.ca>
References: <e3617$429713d7$3eb01f24$9096@news.flashnewsgroups.com>
	<roy-29C1D4.09142527052005@reader1.panix.com>
	<XOqdnU5dNq_vgwrfRVn-rg@powergate.ca>
	<119ecss4o7co9ef@corp.supernews.com>
	<ytSdnaFbdrq5BArfRVn-ig@powergate.ca>
Message-ID: <20050527222726.GC96947@tektite.k12usa.internal>

On 05/27/2005-06:02PM, Peter Hansen wrote:
> 
> Hmm... just tried it: you're right!  On the other hand, the results were 
> unacceptable: each process has a separate file pointer, so it appears 
> whichever one writes first will have its output overwritten by the 
> second process.

Did you open the files for 'append' ? 



From gsakkis at rutgers.edu  Mon May  2 21:24:28 2005
From: gsakkis at rutgers.edu (George Sakkis)
Date: 2 May 2005 18:24:28 -0700
Subject: Inspect Python Classes for instance data information
References: <1115081401.464719.142070@o13g2000cwo.googlegroups.com>
	<1115082659.183647.141540@f14g2000cwb.googlegroups.com>
Message-ID: <1115083468.421697.278380@z14g2000cwz.googlegroups.com>

> > I have no idea how to do the inspection part of this little
> > problem. I could just have each class define its own meathod to
> > convert to this format, but that would be a lot of work when i
> > could just make one class that solves the problem for all classes.
> > Is there a way to do this?
>
> Check out the gnosis.magic package of David Mertz (
>
http://www-106.ibm.com/develop?erworks/linux/library/l-pymeta?.html).

> Even if it's not exactly what you want, it will give you an idea of
> where to go from there

..or if you'd rather avoid metaclasses and start from scratch, this
article is a nice guideline to introspection:
http://www-106.ibm.com/developerworks/library/l-pyint.html

George



From jjl at pobox.com  Tue May 17 15:42:04 2005
From: jjl at pobox.com (John J. Lee)
Date: 17 May 2005 19:42:04 +0000
Subject: Python on a public library computer
References: <1116069664.779281.320540@g47g2000cwa.googlegroups.com>
	<87r7g6rbz0.fsf@pobox.com> <42892C88.6090609@open-networks.net>
	<mailman.68.1116286371.8733.python-list@python.org>
	<1116331384.934151.306320@z14g2000cwz.googlegroups.com>
Message-ID: <87oeb9k5bn.fsf@pobox.com>

"Anton Vredegoor" <anton.vredegoor at gmail.com> writes:

> Chris Lambacher topposted:
> 
> > usb key and moveable python.
> > http://www.voidspace.org.uk/python/movpy/
> 
> I have a usb card reader and I can use it. That saves me from having to
> have remote storage at least. However I can only save files, not open
> them, except if I use word, excel or powerpoint.
[...]

That's because Word, Excel and Powerpoint are such noteworthy examples
of perfectly-secure software, invulnerable to macro viruses or subtle
interactions with IE.

Heaven forfend that you should exploit such a bug in order to get your
work done.

No, being serious, sinking to that level of hacking probably isn't a
great idea, but it is tempting when you're trying to do something
perfectly above-board and are blocked for reason of not being part of
the MS machinery...


John


From duncan.booth at invalid.invalid  Mon May  9 11:48:33 2005
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 9 May 2005 15:48:33 GMT
Subject: file corruption on windows - possible bug
References: <427F799E.2080002@bellsouth.net>
	<mailman.212.1115651998.29826.python-list@python.org>
Message-ID: <Xns9651AAFBF83C3duncanbooth@127.0.0.1>

Fredrik Lundh wrote:

> you do realize that this opens the file again every time, so you end
> up having 4x2500 file handles pointing to 4 physical files.  that's a
> bad idea. 
> 
Assuming he is using the common C Python most of those file handles get 
closed immediately after opening, so he never actually has more than 5 
handles open at one time. Even 5 open handles to 4 physical files is a bad 
idea though, and depending on this behaviour is also a bad idea.

If he had actually managed to try to open all the files simultaneously then 
I think an exception would be quite likely with anything approaching that 
number of handles e.g. on my XP system I can open 509 handles (or 3 more if 
I close stdin/out/err first) and just over twice that on Linux.


From rupole at hotmail.com  Thu May 26 06:15:36 2005
From: rupole at hotmail.com (Roger Upole)
Date: Thu, 26 May 2005 06:15:36 -0400
Subject: win32clipboard.GetClipboardData() return string with null
	characters
References: <op.src74qnv6yt6e7@news.cisco.com>
Message-ID: <4295a2ad$1_2@spool9-west.superfeed.net>

I don't get any extra characters.  Do they always show up, or is it possible
whatever application put the data on the clipboard put them there ?

        Roger
.
"aurora" <aurora00 at gmail.com> wrote in message news:op.src74qnv6yt6e7 at news.cisco.com...
>I was using win32clipboard.GetClipboardData() to retrieve the Windows  clipboard using code similar to the message below:
>
> http://groups-beta.google.com/group/comp.lang.python/msg/3722ba3afb209314?hl=en
>
> Some how I notice the data returned includes \0 and some characters that  shouldn't be there after the null character. It is 
> easy enough to truncate  them. But why does it get there in the first place? Is the data length  somehow calculated wrong?
>
> I'm using Windows XP SP2 with Python 2.4 and pywin32-203.
>
> aurora 




----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! >100,000 Newsgroups
---= East/West-Coast Server Farms - Total Privacy via Encryption =---


From flamesrock at gmail.com  Tue May 31 13:50:21 2005
From: flamesrock at gmail.com (flamesrock)
Date: 31 May 2005 10:50:21 -0700
Subject: how to prepend string to a string?
In-Reply-To: <429bcb76$1_1@newspeer2.tds.net>
References: <1117498752.591304.42280@g44g2000cwa.googlegroups.com>
	<429bcb76$1_1@newspeer2.tds.net>
Message-ID: <1117561820.940853.296290@g47g2000cwa.googlegroups.com>

Thanks for all the responses :)

You're right, Kent. That does exactly what I need it to.

Anyways.. if there isn't a prepend function, I'm going to request it
from the devs. Would be cool to see that in future versions of python.



From vincent at visualtrans.de  Thu May 19 01:38:14 2005
From: vincent at visualtrans.de (vincent wehren)
Date: Thu, 19 May 2005 07:38:14 +0200
Subject: Is Python suitable for a huge, enterprise size app?
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>
Message-ID: <d6h8o8$nm2$1@news3.zwoll1.ov.home.nl>


"john67" <teamuhlig at gmail.com> schrieb im Newsbeitrag 
news:1116430620.004234.187280 at f14g2000cwb.googlegroups.com...
| The company I work for is about to embark on developing a commercial
| application that will cost us tens-of-millions to develop.  When all is
| said and done it will have thousands of  business objects/classes, some
| of which will have hundreds-of-thousands of instances stored in a DB.
| Our clients will probably have somewhere between 50-200 users working
| on the app during the day, possibly in mutiple offices, and then a
| large number of batch processes will have to run each night.  It will
| also need to have a web interface for certain users.  It needs to be
| robust, easy to maintain, and able to be customized for each client.
|
| Right now it looks like Java is the language of choice that the app
| will be developed in. However, I have been looking and reading a lot
| about Python recently and it seems to me that Python could handle it.

If the application is really huge, you should consider using
a set of programming languages that do the particular job best.
That is, go for a complementary, concurrent approach in your choice
of programming  languages. I wouldn't want to religiously stick to any
one language just for the sake of being religious.

I am sure that from a "best-for-the-job" perspective, Python is a serious
candidate for most of them. The aspects robust, easy to maintain, and
suitable for customization that you envision as properties
for your application are properties that need to be matched the
language(s) of choice, as well. Again, here Python is a more than serious
contender.


Regards,
--

Vincent Wehren





| The big attraction to me is the developer productivity.  It seems that
| if Python can handle it, then we could gain a huge savings by using
| Python instead of Java from a productivity standpoint alone.
|
| So, given the very general requirements in the first paragraph, do you
| think that Python could handle it?  If anyone has direct experience
| developing large apps in Python, I would appreciate your insight.
| Based on the responses I get, I am planning on writing a proposal to my
| management to consider Python instead of Java.
|
| Thanks,
| John
| 




From ptmcg at austin.rr.com  Wed May 25 17:59:13 2005
From: ptmcg at austin.rr.com (Paul McGuire)
Date: 25 May 2005 14:59:13 -0700
Subject: regexp for sequence of quoted strings
References: <1117050058.836444.189460@o13g2000cwo.googlegroups.com>
	<yfs64x7xby7.fsf@black4.ex.ac.uk>
Message-ID: <1117058353.702619.179010@z14g2000cwz.googlegroups.com>

Pyparsing includes some built-in quoted string support that might
simplify this problem.  Of course, if you prefer regexp's, I'm by no
means offended!

Check out my Python console session below.  (You may need to expand the
unquote method to do more handling of backslash escapes.)

-- Paul
(Download pyparsing at http://pyparsing.sourceforge.net.)

>>> from pyparsing import delimitedList, sglQuotedString
>>> text = r"'the','dog\'s','bite'"
>>> def unquote(s,l,t):
...     t2 = t[0][1:-1]
...     return t2.replace("\\'","'")
...
>>> sglQuotedString.setParseAction(unquote)
>>> g = delimitedList( sglQuotedString )
>>> g.parseString(text).asList()
['the', "dog's", 'bite']



From johnandsarah at estragon.freeserve.co.uk  Mon May  2 17:41:25 2005
From: johnandsarah at estragon.freeserve.co.uk (John Perks and Sarah Mount)
Date: Mon, 2 May 2005 22:41:25 +0100
Subject: MRO problems with diamond inheritance?
References: <d53jqq$b88$1@newsg4.svr.pol.co.uk>
	<1115025031.721431.76320@o13g2000cwo.googlegroups.com>
Message-ID: <d56721$v41$1@newsg1.svr.pol.co.uk>


"Michele Simionato" <michele.simionato at gmail.com> wrote in message
news:1115025031.721431.76320 at o13g2000cwo.googlegroups.com...
> BTW, what it your use case? I have yet to see a single compelling use
> case for multiple inheritance, so I am
> curious of what your design is.

Before I start, I should mention that my workaround I listed previously
is bogus, but I think this:

listOfBases.sort(reverse=True, key=lambda b:len(b.__mro__))

has the effect of pulling the most derived classes to the front of the
bases list, which at any rate stops the exception being thrown.

My compelling use case for MI in Python is... better to model MI in Java
:)

Well, I'll come back to that. In the "real" world,  I have found
single-implementation-multiple-interface inheritance (as presented by
Java and .NET) to be highly expressive while avoiding some of the issues
of multiple-implementation inheritance as presented by C++. (Though I
don't agree with Java's FUD that multpile-implementation iheritance is a
bad design choice simply because Java doesn't support it.) In one
application, we had a simple (tree-like, non-MI) hierarchy of abstract
interfaces which would be used by the API's clients:

class Thing { } // abstract
class SpecialThing : virtual public Thing { } // abstract

and the concrete subclasses (that were not exposed via the API) mirrored
it:
class ThingImpl : virtual public Thing { }
class SpecialThingImpl : virtual public SpecialThing, virtual public
ThingImpl { }

(That said, that same job sent me on a training course to learn not to
use inheritance *at* *all*, but rather cut'n'paste multiple copies of
the same code and maintain them in parallel. I got laid off when it
transpired that the entire project was just a figment of somebody's
imagination.)

I'm currently writing a package to embed Java in Python (another one,
just what the world needs), and I use Python's dynamic type creation to
"grow" a Python type hierarchy mirroring that of the underlying Java
object, which is where I'd been running into the MRO problems that
kicked off this whole thread. The Java classes are represented by Python
types, where the one for class Class is also the metaclass of all the
Java objects. Aside from those though, I've now had to model Java's MI
in both C++ and Python and found it to be surprisingly painless on both
occasions.

(In cas you're interested, it all works via:

[Python client code] --> pyJav(Python) --> Boost.Python -->
pyJav._core(C++) --> MyJNI++ --> JNI --> [Java code]

where all the stuff you've never heard of is mine. I'm aiming to keep
the pyJav C++ layer as thin as possible, and do everything I can in
Python.)

John.




From dominic.fox at gmail.com  Mon May  2 18:18:44 2005
From: dominic.fox at gmail.com (Dominic Fox)
Date: Mon, 2 May 2005 23:18:44 +0100
Subject: Tripoli: a Python-based triplespace implementation
In-Reply-To: <17014.13167.231933.56821@montanaro.dyndns.org>
References: <mailman.9.1114999502.6582.python-list@python.org>
	<f278b21305050202544b4bd11d@mail.gmail.com>
	<17014.13167.231933.56821@montanaro.dyndns.org>
Message-ID: <f278b21305050215183cf60a7e@mail.gmail.com>

> Is there some interoperability requirement with non-Python apps?  If not,
> why not just use pickle or marshal?

I would imagine that much of the existing, current and useful
triple-based data out there is serialized (or serializable) in
RDF/XML. I wouldn't choose it as a serialization format arbitrarily...

Dominic

-- 
// Alas, this comparison function can't be total:
// bottom is beyond comparison. - Oleg Kiselyov


From tchur at optushome.com.au  Mon May 30 16:36:44 2005
From: tchur at optushome.com.au (Tim Churches)
Date: Tue, 31 May 2005 06:36:44 +1000
Subject: How do you drive-by-wire a car using Python ?
In-Reply-To: <1117478120.880612.75250@g44g2000cwa.googlegroups.com>
References: <1117478120.880612.75250@g44g2000cwa.googlegroups.com>
Message-ID: <429B795C.10202@optushome.com.au>

igorcarron at gmail.com wrote:
> Hello everybody,
> 
> Our entry in the DARPA Grand Challenge race uses Python as a
> programming language. For those of you who are interested, we are
> beginning to put some of our code on our blog.

Here is a shot of a Pythonic DARPA Grand Challenge autonomous vehicle
pausing to do garbage collection:
http://www.shoalhaven.nsw.gov.au/council/sections/waste/images/garbage_truck_lifting_bin_1.jpg

Tim C




From harlinseritt at yahoo.com  Wed May 18 08:01:11 2005
From: harlinseritt at yahoo.com (Harlin Seritt)
Date: 18 May 2005 05:01:11 -0700
Subject: How to learn OO of python?
In-Reply-To: <8764xg69nr.fsf@hector.domek>
References: <mailman.130.1116402087.8733.python-list@python.org>
	<8764xg69nr.fsf@hector.domek>
Message-ID: <1116417670.977767.235690@g14g2000cwa.googlegroups.com>

I think I know what you mean. When I first started trying to learn the
OOP aspect of Python I thought it was strange since I had started with
OOP on Java and C++. Nonetheless, once you get the hang of it, OOP will
make way more sense than all of the complications of Java and C++ class
implementations. Let me give you a quick example of what I'm talking
about:

class Animal:
   def eats(self):
      print 'The animal eats.'
   def walks(self):
      print 'The animal walks.'

"""Here the class Dog instantiates the class Animal. 'Dog' will 'do'
whatever 'Animal' does plus some other things which we will describe in
this class code."""
class Dog(Animal):
   """#the self keyword means that this function will be a class
function"""
   def communicate(self):
      print 'The dog barks.'

   """# __init__ function defines what # #will happen as soon as this
class is instantiated. Also, the overloaded variable designators (color
= None, fur = None) allow the instantiator to optionally define these
variables when called from elsewhere."""

   def __init__(self, color=None, fur=None):
      """# this time self will designate the variable 'color' # as a
class variable."""
      self.color = color
      self.fur = fur

if __name__ == '__main__':
   sparky = Dog(color="White", fur="Short")
   sparky.communicate()
   print sparky.color
   print sparky.fur
   print sparky.eats()   # Here sparky will access 'Animal' methods
that 'Dog' inherited.
   print sparky.walks()  # Another method originating from the 'Animal'
class.

What happens if you don't use 'self' inside your class code? You won't
be able to access it within the class outside of the method where you
initialized it. For instance, if you don't designate color with self
then you can only use the 'color' variable within the __init__()
method. This is useful whenever you want to use 'color' as a private
variable.

The same also goes for methods. Hopefully, you see how useful this can
be down the road. This way you won't have to use variable/method access
modifiers like Public, Private, Protected and so forth. If this doesn't
make sense or you want more clarity, please let me know.

Good luck,

Harlin Seritt



From http  Thu May 26 14:13:10 2005
From: http (Paul Rubin)
Date: 26 May 2005 11:13:10 -0700
Subject: urllib2 and SSL
References: <d73erd$pjm$1@solaris.cc.vt.edu>
	<1117085151.968298.160740@f14g2000cwb.googlegroups.com>
	<d74la4$2a$1@solaris.cc.vt.edu>
Message-ID: <7xr7ftg8jt.fsf@ruckus.brouhaha.com>

rbt <rbt at athop1.ath.vt.edu> writes:
> Thanks for the tip... how *does* all of the other Win32 apps handle
> SSl w/o installing OpenSSL? Do they bundle it and only use it for
> themselves? That seems foolish.

Mozilla has its own SSL stack.  IE uses one built into wininet, I think.


From casevh at comcast.net  Mon May 16 15:25:04 2005
From: casevh at comcast.net (casevh at comcast.net)
Date: 16 May 2005 12:25:04 -0700
Subject: Recommended version of gcc for Python?
In-Reply-To: <7P5ie.18072$J12.7334@newssvr14.news.prodigy.com>
References: <7P5ie.18072$J12.7334@newssvr14.news.prodigy.com>
Message-ID: <1116271504.748836.25540@z14g2000cwz.googlegroups.com>

On Ubuntu, I have tried 3.3.4, 3.4.3 and 4.0. Compile and make test ran
successfully with all three. For my benchmark, platform, and compiler
options, 3.4.3 was the fastest by approximately 2%.

I would normally use the default compiler for your distribution.

casevh



From mwm at mired.org  Fri May  6 21:37:02 2005
From: mwm at mired.org (Mike Meyer)
Date: Fri, 06 May 2005 20:37:02 -0500
Subject: hard memory limits
References: <d5f9jl$k6d$1@domitilla.aioe.org> <86vf5w5tkz.fsf@guru.mired.org>
	<d5g94e$8d0$1@sea.gmane.org>
	<200505061052.28325.jstroud@mbi.ucla.edu>
	<mailman.108.1115404168.29826.python-list@python.org>
	<86hdhg5cc1.fsf@guru.mired.org>
	<mailman.114.1115419035.29826.python-list@python.org>
Message-ID: <868y2r6cld.fsf@guru.mired.org>

"Fredrik Lundh" <fredrik at pythonware.com> writes:

> Mike Meyer wrote:
>
>> > So why would Apple insist on setting unusably low process limits, when
>> > the others don't?
>>
>> You're making an unwarranted assumption here - that the OP wasn't
>> creating a large process of some kind.
>
> You need a special license to create large processes on a Mac?

No more so than on any other OS. What does that have to do with my
pointing out that the OP may have been creating a process that
exceeded the size normally allowed for non-administrator processes?
Any modern OS should have different groups of users with different
sets of possible maximum resource allocation - which only an
administrator should be allowed to change.

> I clicked on the google link that Bill posted, and noted that it wasn't
> exactly something that only affected a single Python user.  If some-
> thing causes problems for many different applications that run fine
> on other Unix systems, it's pretty obvious that the default OS X con-
> figuration isn't quite as Unixy as one would expect.

I didn't follow that link - I formulated my own google queery. While I
saw lots of things about vm_malloc, trying vm_malloc python turns up
nothing. Which seems to indicate that this is a relatively rare thing
for python users.

>> FWIW, OS X has a Mach kernel. The failing vm_malloc call listed in the
>> OP is a Mach call, not a Unix call.
> So has tru64.  I've done some serious Python stuff on that platform
> (stuff that included some really large processes ;-), and I never had
> any allocation problems.  But of course, that system was designed
> by DEC people...

Oddly enough, google just turned up a vm_malloc for VMS as well. I
wonder if that's where tru64 got it from - and if so how it got into
Mach?

There is something very non-unixy going on here, though. Why is
vm_malloc exiting with an error message, instead of returning a
failure to the calling application? I've seen other applications
include a FOSS malloc implementation to work around bugs in the
system's malloc. Maybe Python should do that on the Mac?

         <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From lbates at syscononline.com  Wed May 18 12:11:21 2005
From: lbates at syscononline.com (Larry Bates)
Date: Wed, 18 May 2005 11:11:21 -0500
Subject: Is Python suitable for a huge, enterprise size app?
In-Reply-To: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>
Message-ID: <AsudnS246O5u9RbfRVn-1Q@comcast.com>

I don't see anything listed that would eliminate Python.  You
may want to take a quick look at some of the rather large
applications that have been done with Zope (written in Python).
Zope might even be a good application platform to build upon
(can't say for sure, not enough detail about application).
Even if you don't want to use all of Zope the ZODB is a well
tested persistent Python object store that might prove
helpful.

There are many other projects supporting WAY more than 200
users that are written in Python.

-Larry Bates

john67 wrote:
> The company I work for is about to embark on developing a commercial
> application that will cost us tens-of-millions to develop.  When all is
> said and done it will have thousands of  business objects/classes, some
> of which will have hundreds-of-thousands of instances stored in a DB.
> Our clients will probably have somewhere between 50-200 users working
> on the app during the day, possibly in mutiple offices, and then a
> large number of batch processes will have to run each night.  It will
> also need to have a web interface for certain users.  It needs to be
> robust, easy to maintain, and able to be customized for each client.
> 
> Right now it looks like Java is the language of choice that the app
> will be developed in. However, I have been looking and reading a lot
> about Python recently and it seems to me that Python could handle it.
> The big attraction to me is the developer productivity.  It seems that
> if Python can handle it, then we could gain a huge savings by using
> Python instead of Java from a productivity standpoint alone.
> 
> So, given the very general requirements in the first paragraph, do you
> think that Python could handle it?  If anyone has direct experience
> developing large apps in Python, I would appreciate your insight.
> Based on the responses I get, I am planning on writing a proposal to my
> management to consider Python instead of Java.
> 
> Thanks,
> John
> 


From bokr at oz.net  Tue May 10 06:22:16 2005
From: bokr at oz.net (Bengt Richter)
Date: Tue, 10 May 2005 10:22:16 GMT
Subject: Unique Elements in a List
References: <1115676903.432187.294910@z14g2000cwz.googlegroups.com>
	<1115678197.064079.28220@o13g2000cwo.googlegroups.com>
Message-ID: <42808257.1154246128@news.oz.net>

On 9 May 2005 15:36:37 -0700, "superprad at gmail.com" <superprad at gmail.com> wrote:

>OK I need to be more clear I guess!Unique Elements I mean, elements
>that are non repeating. so in the above list 0.4, 0.9 are unique as
>they exist only once in the list.
>
You want to be careful of your definitions, especially with floating point values,
which may surprise the uninitiated. Dicts and sets hash numerically equal values
to the same hash, and then do equality test, so you get legitimate results like:

 >>> set([9*.1-8*.1, .1])
 set([0.10000000000000001, 0.099999999999999978])
 >>> set([123, 123.0, 123L])
 set([123])
 >>> set([123.0, 123, 123L])
 set([123.0])
 >>> set([123L, 123, 123.0])
 set([123L])


You may want to consider creating representations other than the original data
to use in your uniqueness testing, depending on your definition.

If you are happy with the way dicts and sets compare elements, you could do
a dict that keeps counts, or FTHOI something different (hot off untested griddle,
so test before relying ;-)

 >>> data = [0.1,0.5,0.6,0.4,0.1,0.5,0.6,0.9]
 >>> once=set()
 >>> more=set()
 >>> for el in data:
 ...     if el in once: more.add(el)
 ...     else: once.add(el)
 ...
 >>> once-more
 set([0.90000000000000002, 0.40000000000000002])

Not the most efficient space-wise, not sure about speed.

Regards,
Bengt Richter


From peter at engcorp.com  Fri May  6 22:07:07 2005
From: peter at engcorp.com (Peter Hansen)
Date: Fri, 06 May 2005 22:07:07 -0400
Subject: how  to make  a LAN game using python?
In-Reply-To: <d5h5jv$hnd$1@news.yaako.com>
References: <d5h5jv$hnd$1@news.yaako.com>
Message-ID: <VKCdndjcj-Bvv-HfRVn-rw@powergate.ca>

flyaflya wrote:
> I want make a desktop game suports LAN connect, but pygame has nothing 
> about network.How to let pygame suport LAN connect? have you some 
> examples or articles about LAN connect?

Pygame wouldn't bother supporting that, since it's already fully 
supported by standard Python, and any number of add-on frameworks.

Your options include, but aren't limited to:

- the "socket" module in Python's standard library
- "asyncore" and friends in the standard library
- Twisted (this might be beyond your level, but it was *designed* for 
doing online games so it can certainly handle whatever you want to throw 
at it... think of it as something you can grow into)
- Pyro (this might be the easiest for you to get working, if you already 
know Python and are using it for all software involved)

Many books and web sites on Python will cover networking issues as well. 
  The Python in a Nutshell book certainly talks about it, and I suspect 
the Cookbook has some useful recipes as well.

Finally, search terms to help you use Google, which could certainly have 
told you much of this if you'd tried, include "sockets", "RPC", 
"distributed systems", "networking", and of course "Python" in 
combination with any of them...

-Peter


From jepler at unpythonic.net  Thu May 19 12:44:45 2005
From: jepler at unpythonic.net (Jeff Epler)
Date: Thu, 19 May 2005 11:44:45 -0500
Subject: Tkinter special math chars
In-Reply-To: <428CAB39.1070109@anvilcom.com>
References: <428CAB39.1070109@anvilcom.com>
Message-ID: <20050519164442.GB18155@unpythonic.net>

I wrote the following code:
    import Tkinter
    t = Tkinter.Label()
    t.configure(
        text=u"As the function approaches \N{INFINITY}, \N{HORIZONTAL ELLIPSIS}")
    t.pack()
    t.mainloop()
It worked for me on Windows NT 4.0 with Python 2.4, and on RedHat 9 with
a self-compiled Python 2.3, showing an infinity symbol and an ellipsis.

u'\N{...}' stands for the Unicode character named '...'.  Unicode.org
(and other sites) have lists of Unicode character names. 

Tk tries very hard to find the requested character in some font
available on the system, but when it fails it just displays a unicode
escape sequence like "\u220e" (instead of the END OF PROOF symbol, in
this case), and there's really no way for Python to find out and fall
back in some graceful way.

Relying on this behavior, here's a somewhat-falliable way to detect the
presence of a symbol in the font used in a given widget:
    def symbol_exists(s, w, f = None):
        if f is None:
            f = w.cget("font")
        width_symbol = w.tk.call("font", "measure", f, s)
        width_bench = w.tk.call("font", "measure", f, "000")
        return width_symbol < width_bench
This finds the width in pixels of the given symbol (s) and the string "000", in
the font f.  If the width of the symbol is smaller, then it's probably available.
If it's wider, then it's probably rendered as an escape sequence like "\u220e".
This is falliable because there's no guarantee that the symbol would not be as
wide as 000, but also it's possible for some escape code (say \u1111) to be
narrower than 000.  Neither of these seem very likely in practice.

Jeff
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From cam.ac.uk at mh391.invalid  Wed May  4 19:27:56 2005
From: cam.ac.uk at mh391.invalid (Michael Hoffman)
Date: Thu, 05 May 2005 00:27:56 +0100
Subject: properties vs. eval()
In-Reply-To: <d5b8es$ubr$05$1@news.t-online.com>
References: <1115235178.971840.248160@o13g2000cwo.googlegroups.com>
	<d5b8es$ubr$05$1@news.t-online.com>
Message-ID: <d5blpv$2la$1@gemini.csx.cam.ac.uk>

Peter Otten wrote:

> Use 
> 
> eval(s) 
> 
> to evaluate an expression and 
> 
> exec s
> 
> to execute a statement.

I never thought of using compile() to get around this before. Now I can 
finally use print in my lambda functions! Just think of the horrible 
code I could write:

f = lambda x: eval(compile("print %s" % x, "<string>", "exec"))
-- 
Michael Hoffman


From gioco at nekhem.com  Thu May 12 11:57:12 2005
From: gioco at nekhem.com (Corrado Gioannini)
Date: Thu, 12 May 2005 17:57:12 +0200
Subject: How "return" no return ?
In-Reply-To: <00fd01c55709$385df110$5aeda8c0@twilliams>
References: <mailman.389.1115837608.29826.python-list@python.org>
	<1115839271.271071.32710@z14g2000cwz.googlegroups.com>
	<mailman.393.1115840571.29826.python-list@python.org>
	<d5vs3i$54n$2@sea.gmane.org>
	<00fd01c55709$385df110$5aeda8c0@twilliams>
Message-ID: <20050512155712.GH800@zephyr>

On Thu, May 12, 2005 at 04:42:34PM +0100, Tim Williams wrote:
> Just don't use a return statement at all,  or do something like
> 
> [function body]
> if not val = None:
>     return val
> [end of function]

i didn't understood that.
if you don't return nothing explicitly the function returns None.
(or am i wrong?)

c.
-- 
Hi, I'm a .signature virus! Copy me to your .signature file and
help me propagate, thanks!




From grante at visi.com  Fri May 13 09:41:11 2005
From: grante at visi.com (Grant Edwards)
Date: Fri, 13 May 2005 13:41:11 -0000
Subject: Launch file in Notepad
References: <42835db6$0$1334$5fc3050@dreader2.news.tiscali.nl>
	<mailman.462.1115906101.29826.python-list@python.org>
	<1186phdog83fmf6@corp.supernews.com>
	<42836e72.1345761282@news.oz.net>
	<1186tsftfofdsa1@corp.supernews.com>
	<n2b881pvh4d0471gc549dbnleb4qpm4q93@4ax.com>
Message-ID: <1189bjnaebu0o50@corp.supernews.com>

On 2005-05-13, Dennis Lee Bieber <wlfraed at ix.netcom.com> wrote:

> On Thu, 12 May 2005 15:34:39 -0000, Grant Edwards <grante at visi.com>
> declaimed the following in comp.lang.python:
>
>> I think the use of forward slashes for command line switches
>> was adopted by CP/M from DEC's OSes (e.g. RSX-11).  CP/M didn't
>> have directories in the beginning, so nobody worried about what
>> to use for path separators (DEC used colons, IIRC).  DOS was a
>
> 	I can't speak for the various PDP-11 family, but VMS syntax was:
>
> 	hardware:[toplevel.nextlevel.ad.infinitum]filename.ext;version

Ah yes, that's looking familiar.  The colon separated the
"logical drive" from the path in brackets, in which the
seperator was a dot.  I spent most of my time under VMS running
DECShell, so I used mostly 'normal' Unix path syntax.

> where hardware could be a drive specification or a logical name (only
> other OS I've encountered with logical names is AmigaOS, which also
> allowed one to specify disks by volume label -- and would prompt the
> user to insert volume X into a drive if needed!)

-- 
Grant Edwards                   grante             Yow!  Don't hit me!! I'm in
                                  at               the Twilight Zone!!!
                               visi.com            


From grante at visi.com  Thu May 12 10:20:29 2005
From: grante at visi.com (Grant Edwards)
Date: Thu, 12 May 2005 14:20:29 -0000
Subject: Launch file in Notepad
References: <42835db6$0$1334$5fc3050@dreader2.news.tiscali.nl>
	<mailman.462.1115906101.29826.python-list@python.org>
Message-ID: <1186phdog83fmf6@corp.supernews.com>

On 2005-05-12, Brian van den Broek <bvande at po-box.mcgill.ca> wrote:

>> b1="c:\test.txt"
>> os.system('notepad.exe ' + b1)
>> 
>> However, the t of test is escaped by the \, resulting in Notepad trying 
>> to open "c: est.txt".

> There are several ways, but the preferred solution is to switch the 
> slash direction: "c:/test.txt". Python's smart enough to notice its 
> running on Windows and do the right thing with the slash.

Does Python really look at the string and mess with the slash?
I don't think it needs to, since the Windows system calls have
always accepted forward slashses, haven't they?

-- 
Grant Edwards                   grante             Yow!  Ask me the DIFFERENCE
                                  at               between PHIL SILVERS and
                               visi.com            ALEXANDER HAIG!!


From kdahlhaus at yahoo.com  Mon May 16 09:09:39 2005
From: kdahlhaus at yahoo.com (kdahlhaus at yahoo.com)
Date: 16 May 2005 06:09:39 -0700
Subject: Web server platform for beginner
In-Reply-To: <1116247947.853539.316620@g49g2000cwa.googlegroups.com>
References: <1116247947.853539.316620@g49g2000cwa.googlegroups.com>
Message-ID: <1116248979.633580.132560@z14g2000cwz.googlegroups.com>

Chris,

CherryPy 2 is very easy to get started with.



From hello at spamm.er  Tue May 10 14:02:19 2005
From: hello at spamm.er (alex goldman)
Date: Tue, 10 May 2005 11:02:19 -0700
Subject: Language documentation ( was Re: Computing Industry shams)
References: <1115509201.680334.140840@f14g2000cwb.googlegroups.com>
	<874qdezh76.fsf@kafka.homenet> <1415322.AzhuxSBQdk@yahoo.com>
	<x78y2ot3zq.fsf@bolo.xenadyne.com> <1955897.My2EmLpO4s@yahoo.com>
	<pan.2005.05.10.14.08.14.485000@netactive.co.uk>
	<1212926.3xzUY5Pt1A@yahoo.com>
	<pan.2005.05.10.17.47.38.704000@netactive.co.uk>
Message-ID: <1562690.uMvC404mSK@yahoo.com>

Lawrence Kirby wrote:

> On Tue, 10 May 2005 06:52:18 -0700, alex goldman wrote:
> 
>> Lawrence Kirby wrote:
> 
> ...
> 
>>> However the original quote was in the context of regular expressions, so
>>> discussion of the terminology used in regular expressions is far more
>>> relevant than the terminology used in graph search and optimisation
>>> algorithms.
>> 
>> I replied to "And from memory, that is the sort of thing done in
>> Computing
>> 101 and in  Data Structures and Algorithms 101", and I fully explained
>> what I meant by "greedy" as well. There was no ambiguity.
> 
> My response talks about relevance, not ambiguity.

Well, your response was irrelevant.


From thomas at eforms.co.nz  Thu May  5 17:48:51 2005
From: thomas at eforms.co.nz (Thomas)
Date: Fri, 6 May 2005 09:48:51 +1200
Subject: UnicodeDecodeError
Message-ID: <20050505214659.AFE5337A01@mail.tintz.co.nz>

Thanks a lot.. Fredrik..

 

That's says it all..

 

Cheers

Thomas

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From Amitpython5 at aol.com  Wed May 11 09:03:42 2005
From: Amitpython5 at aol.com (Amitpython5 at aol.com)
Date: Wed, 11 May 2005 09:03:42 EDT
Subject: Question about XML Parser in Python.
Message-ID: <192.3fb90e92.2fb35cae@aol.com>

Hello,
 
  Well, I'm fairly new to Python and have encountered a strange error  while 
reading an XML document in Python. I used the SAX parser, and my input XML  is 
fairly large with 300000 records. I extract about 25 fields from each record  
and spit out a csv file. The strange thing is that after about 2000 records,  
some value (one of the 25) is missing in the csv file, so it just appears as  
',,', as if the value was missing from the Input file. I checked the Input 
file  and all values are intact.
 
  It is not field specific, as this behavior is repeated for different  
fields every time. I'm really confused, is this a bug with the parser? or just  too 
many records to process?
 
Please help.
 
Thanks,
Amit.
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From grante at visi.com  Wed May  4 09:29:48 2005
From: grante at visi.com (Grant Edwards)
Date: Wed, 04 May 2005 13:29:48 -0000
Subject: How To Reply
References: <mailman.141.1115192187.6583.python-list@python.org>
Message-ID: <117hjico67nj68b@corp.supernews.com>

On 2005-05-03, phil <phillip.watts at anvilcom.com> wrote:

> I get a digest several times a day.
> When I wish to respond to an item I must
> cut and paste the item and the subject line.
> Is there something to click on for a simple reply?
> Using an old mozilla mail.

Instead of accessing the newsgroup through an e-mail gateway,
why not use a newsreader and access it directly?  It eliminates
all the hassles associated with digested mail.  I even use
gmane.org to access "normal" mailing lists via a newsreader.

-- 
Grant Edwards                   grante             Yow!
                                  at               FISH-NET-FISH-NET-FISH-NET-FISH-NET-FISH!!
                               visi.com            


From http  Sun May  1 02:58:18 2005
From: http (Paul Rubin)
Date: 30 Apr 2005 23:58:18 -0700
Subject: How to kill a SocketServer?
Message-ID: <7xwtqj1lh1.fsf@ruckus.brouhaha.com>

Let's say you have a SocketServer with the threading mix-in and you
run serve_forever on it.  How can you shut it down, or rather, how can
it even shut itself down?  Even if you use a handle_request loop
instead of serve_forever, it still seems difficult:

     class myserver(ThreadingMixIn, TCPServer): pass
     server = myserver(...)
     server.shutdown = False
     while not server.shutdown:
         server.handle_request()

Some code in the request handler eventually sets server.shutdown to
True (say on receiving a "shutdown" command from the client), but by
then the main thread is already blocked waiting for another
connection.  I ended up having the quit operation actually open a
loopback connection after setting the shutdown flag, just to unblock
the socket listener.  But that seems insane.

Is there a better way?


From sf_kersteinroie at bezeqint.net  Mon May  9 18:40:52 2005
From: sf_kersteinroie at bezeqint.net (Roie Kerstein)
Date: Tue, 10 May 2005 01:40:52 +0300
Subject: Unique Elements in a List
References: <1115676903.432187.294910@z14g2000cwz.googlegroups.com>
Message-ID: <d5oo9r$ok1$1@sea.gmane.org>

superprad at gmail.com wrote:

> Is there an easy way to grab the Unique elements from a list?
> 
Yes.
The set data type.
Look in the reference of python 2.4.
-- 
Best regards
Roie Kerstein



From madsurfer2000 at hotmail.com  Tue May 17 16:34:29 2005
From: madsurfer2000 at hotmail.com (madsurfer2000 at hotmail.com)
Date: 17 May 2005 13:34:29 -0700
Subject: Python forum
References: <mailman.84.1116320178.8733.python-list@python.org>
Message-ID: <1116362069.228928.72720@z14g2000cwz.googlegroups.com>


Jonas Melian wrote:
> Hi,
>
> I'm going to say a suggestion, why don't you create a forum like the
one
> of Ruby (http://www.rubyforums.com/)? for the novices this is a great
> help, better than a mail list
>

What's wrong with this web forum ;-)

http://groups-beta.google.com/group/comp.lang.python?hl=en

c.l.python is a mailing list, usenet group and a web forum. How you
access it is up to you. There are also other nntp-to-web sites out
there, and you can even make your own if you don't like them.



From tjreedy at udel.edu  Fri May  6 14:41:50 2005
From: tjreedy at udel.edu (Terry Reedy)
Date: Fri, 6 May 2005 14:41:50 -0400
Subject: inheritance with new-style classes - help
References: <1115402296.414753.324000@f14g2000cwb.googlegroups.com>
Message-ID: <d5gdch$okr$1@sea.gmane.org>


"Greg Copeland" <gtcopeland2002 at yahoo.com> wrote in message 
news:1115402296.414753.324000 at f14g2000cwb.googlegroups.com...
> Okay, I have:
[snip]
>        self._childAttrib = "child"
...
> AttributeError: 'Child' object has no attribute '_childAttrib'
>>>> x.__dict__
> {'_attrib': 'base'}
>
> What??!  Where the heck did self._childAttrib go?  And why?

I don't immediately see the problem.  Failing that, I would rerun with
        print 'setting '_childAttrib' # and
        print self._childAttrib
bracketing the line where it should be set, and go one from there.

Terry J. Reedy






From gsakkis at rutgers.edu  Fri May  6 04:08:50 2005
From: gsakkis at rutgers.edu (George Sakkis)
Date: 6 May 2005 01:08:50 -0700
Subject: Weird UserArray AttributeError (bug ?)
Message-ID: <1115366930.599581.118690@f14g2000cwb.googlegroups.com>

I came across a strange error when trying to define a settable property
for a new-style subclass of UserArray (Numeric). Here's a shorter
example that reproduces the problem:


from UserArray import UserArray
from math import hypot

class Vector(UserArray,object):
    def __init__(self,x,y):
        super(Vector,self).__init__((x,y))

    def _fget(self): return hypot(*self)
    def _fset(self, m): self *= m/self.magnitude
    magnitude = property(_fget, _fset)


v = Vector(3.,4.)
print v.magnitude
# the line below prints an infinite sequence of:
# Exception exceptions.AttributeError: "can't delete attribute"
# in  ignored
v.magnitude = 10


Any ideas on what's going on and if there's a workaround ?

George



From sjmachin at lexicon.net  Mon May 23 09:07:56 2005
From: sjmachin at lexicon.net (John Machin)
Date: Mon, 23 May 2005 23:07:56 +1000
Subject: problem uploading ZIP file tp PyPI
References: <ECBA357DDED63B4995F5C1F5CBE5B1E802E59C94@its-xchg4.massey.ac.nz>
	<mailman.234.1116545288.8733.python-list@python.org>
	<al9q819kp0kta0mm26ej0fl04cohi51ssn@4ax.com>
	<42916459$0$5175$afc38c87@news.optusnet.com.au>
Message-ID: <ftk39113r0kbpc08jjcem9toskfb0d0fv9@4ax.com>

On Mon, 23 May 2005 15:04:27 +1000, richard
<richardjones at optushome.com.au> wrote:

>John Machin wrote:
>> FYI, there are a few unreconstructed diehards out here who neither run
>> on a *x platform nor run bleeding-edge Python straight out of last
>> night's CVS.
>
>I think you need to pull your head in, mate.
>
>The bug you discovered in PyPI is plain and simple a bug in its attempts to
>discover whether an uploaded ZIP file was generated by distutils.
>
>It's a bug. It will get fixed.
>
>Get over your damn platform paranoia.
>
>

That remark was in response to Tony's seemingly *x-centric suggestion
to use "setup.py --format=gztar" which would have presented some
difficulties to a Windows-only person. Perhaps I should have festooned
it with smileys. In any case it was nothing to do with the bug and
nothing to do with you. I think you need to suck *your* scone in,
cobber :-)

Cheers,
John



From ischenko at gmail.com  Tue May 10 12:34:33 2005
From: ischenko at gmail.com (ischenko at gmail.com)
Date: 10 May 2005 09:34:33 -0700
Subject: Iterating package's module list
Message-ID: <1115742873.231161.142420@f14g2000cwb.googlegroups.com>

Hi,

I'm trying to find all modules that contain doctests and execute them
(using DocTestSuite). The problem is how to iterate (programmatically)
through the package's modules.

>>> import M
>>> inspect.getmembers(M, inspect.ismodule)
[]

Iterating through the source files (via glob) does not help either:

>>> __import__('M.foobar')
<module 'M' from 'M\__init__.pyc'>

See, individual modules points to the base package, not to the module
itself.

How can I iterate through the modules that comprise a Python package?



From lbates at syscononline.com  Wed May 11 09:54:35 2005
From: lbates at syscononline.com (Larry Bates)
Date: Wed, 11 May 2005 08:54:35 -0500
Subject: Reading files into a 2D list.
In-Reply-To: <mailman.332.1115804363.29826.python-list@python.org>
References: <mailman.332.1115804363.29826.python-list@python.org>
Message-ID: <42820E9B.2090100@syscononline.com>

Few observations.

1) Don't concatenate pathnames yourself use os.path.join, that
makes your code portable.

lexi_file = open(os.path.join(sys.path[0],"lexi",files), "r")

2) Start with an empty list and append your "lines" lists:

files_and_lines=[]
filenumber = 0

for files in file_names:
    fpath=os.path.join(sys.path[0]),"lexi", files)
    try:
        lexi_file = open(fpath, "r")
        files_and_lines.append(lexi_file.readlines())

    except(IOError):
        print "Something went wrong trying to read the file:"
        print "'%s'" % fpath

lexi_file.close() # Remember to close each file

Now you have:

files_and_lines[0][0] -> Line 1 of the first file
files_and_lines[0][1] -> Line 2 of the first file
.
.
.
files_and_lines[0][n] -> Line n of the first file
files_and_lines[1][0] -> Line 1 of the second file
.
.
.

Larry Bates

Oyvind Ostlund wrote:
> I am not sure what the right syntax is here. So please help me out (started 2 days ago).
> 
> I have a list of about 20 files that I want to read line by line into a 2D list. So the first dimension will be each file, and the second every line in that file.
> 
> 
> I tried to do something like this:
> 
>     files_and_lines = [][]
>     filenumber = 0
>     
>     for files in file_names:
>         try:
>             lexi_file = open(str(sys.path[0]) + "/lexi/" + files, "r")
>             files_and_lines[filenumber] = lexi_file.readlines()
>             filenumber = filenumber + 1
> 
>         except(IOError):
>             print "Something went wrong trying to read the file:"
>             print "'" + str(sys.path[0]) + files + "'"
> 
> 
> 
> But that was not very sucksessfully. I am not even sure on how to define an empty 2D list. Thanks for all help.
> 
> ??



From mohan at terabolic.com  Sun May 29 21:02:25 2005
From: mohan at terabolic.com (MKoool)
Date: 29 May 2005 18:02:25 -0700
Subject: stdout and stderr showing output only after script is done
In-Reply-To: <1117412433.739654.3770@g44g2000cwa.googlegroups.com>
References: <1117412433.739654.3770@g44g2000cwa.googlegroups.com>
Message-ID: <1117413297.268798.141360@o13g2000cwo.googlegroups.com>

sorry i meant i installed python version 2.4.1, thanks

MKoool wrote:
> I just installed python 2.4 for windows.  I was using the cygwin
> version previously, but wanted to use the official python 2.4 release
> to install a module that reads off some registry entries.
>
> After installing, I did what I normally do, ssh to my local windows
> machine, and run the python script I wrote.  The script takes about 30
> seconds to complete and gives me incremental output.  I ran it, and it
> seems to be buffering standard input and  output.  It ran my whole
> script and showed me all the output of stderr and stdout only after the
> whole script was done.  For example, my script can sometimes take like
> 10 minutes to finish, so I print out "1% complete", "2% complete" and
> so on.  Now it shows me nothing, and at the end, it just tells me "1%
> complete, 2% complete... 100% complete" all in one shot.
> 
> Can I change this behavior somehow?
> 
> thanks,
> mohan



From wolfgang.keller.nospam at gmx.de  Mon May  2 15:28:04 2005
From: wolfgang.keller.nospam at gmx.de (Wolfgang Keller)
Date: 2 May 2005 19:28:04 GMT
Subject: ERP & CRM in Python
References: <1114942643.046728.238980@g14g2000cwa.googlegroups.com>
Message-ID: <xn0e1s70csluct007wolfgangkellernospamgmxde@news.individual.de>

pinky wrote:

> download, doc, forum ; http://tinyerp.org

Why not downloadable and printable PDF documentation instead of
online-HTML.

HTML is _extremely_ inconvenient, both for offline use and for
printing. Why printing? Because reading siginficant amounts of text
on-screen is simply impossible, as is reading an on-screen manual while
actually trying out the software (<-> screenspace).

Why not mailing lists instead of online-"forums".

The former was made for efficient human-to-human communication, the
latter not.

Bets regards

Wolfgang Keller


From sklass at pointcircle.com  Thu May 19 09:56:45 2005
From: sklass at pointcircle.com (rh0dium)
Date: 19 May 2005 06:56:45 -0700
Subject: Convert from numbers to letters
Message-ID: <1116511005.900715.107260@o13g2000cwo.googlegroups.com>

Hi All,

While I know there is a zillion ways to do this..  What is the most
efficient ( in terms of lines of code ) do simply do this.

a=1, b=2, c=3 ... z=26

Now if we really want some bonus points..

a=1, b=2, c=3 ... z=26 aa=27 ab=28 etc..

Thanks



From not at home.com  Sun May  1 16:16:40 2005
From: not at home.com (John Smith)
Date: Sun, 01 May 2005 20:16:40 GMT
Subject: BitKeeper for Python?
Message-ID: <IOade.1185051$Xk.343206@pd7tw3no>

I am going to be working with some people on a project that is going to be
done over the internet. I am looking for a good method of keeping everyone's
code up to date and have everyone be able to access all the code including
all the changes and be able to determine what parts of the code were
changed.

If it were opensource that would be even better.




From "myname" at example.invalid  Thu May 26 12:51:20 2005
From: "myname" at example.invalid (VK)
Date: Thu, 26 May 2005 18:51:20 +0200
Subject: Access from one class to methode of other class
In-Reply-To: <fesb91tvpjs5kl4dm02k8puu08ln35gtfl@4ax.com>
References: <3flu22F8g4u4U1@news.dfncis.de>
	<fesb91tvpjs5kl4dm02k8puu08ln35gtfl@4ax.com>
Message-ID: <3fmd51F8j4sfU1@news.dfncis.de>

> On Thu, 26 May 2005 14:33:45 +0200, VK <"myname"@example.invalid>
> declaimed the following in comp.lang.python:
> 
> 
>>Hi, all!
>>
>>In my programm i have to insert a variable from class 2 to class 1 and I 
>>get error NameError: global name 'd' is not defined. How do I get access 
>>to d.entry.insert() method of class 1
>>
>>class 1:
> 
> 	<shudder> Does Python even allow numeric class names?

:-D don't know

> 
> 	REAL code, stripped to the minimum that duplicates your problem,
> is always better than pseudo-code...

I thought that is it...

> 
> 
>>    self.entry = Entry(self.entryframe)
>>    self.entry.pack()
>>
>>    self.button = Button(command = self.callclass2window)
>>
>>    def callclass2window
>>	c = 2()
>>
>>
>>class 2:
>>    def ins(self)
> 
> 	NO : ???
> 
> 
>>	d.entry.insert(variable)
>>
>>
>>d = 1()
> 
> 
> 	What, might I ask, does .insert() /do/ for an Entry() object?

That insert text into entry object.

> 
> 	As far as I can tell, "class 1" is creating some GUI button.
> Pressing that button invokes your callclass2window(), which creates a
> new "class 2" instance, and then throws it away.

Yes, exactly

> 
> 	Give us code that we can /run/ and we might be able to give you
> an answer...

I try:

from Tkinter import *

class First:
         def __init__(self):
             self.root = Tk()  # create window contents as children to 
root..
             self.entryframe = Frame(self.root)
             self.entryframe.pack(fill=BOTH,expand=1)

             self.entry = Entry(self.entryframe)
             self.entry.pack(side=TOP,expand=1,fill=BOTH)
             self.entry.focus()
             self.entry.bind('<Return>',(lambda event: self.fetch())) # 
on enter key

             self.button = 
Button(self.entryframe,text="Call",command=self.getvar)
             self.button.pack(side=LEFT,expand=YES,fill=BOTH)

             self.root.mainloop()

         def fetch(self):
             print 'Input => "%s"' % self.entry.get() # get text form entry

         def getvar(self,event=0):
             c=Second(self,self.root)



class Second:
     def __init__(self,parent,s="thing"):
         self.root = Tk()
         self.ent = Entry(self.root)
         self.ent.pack()
         self.btn = Button(self.root,text='Fetch',command=self.fetch)
         self.btn.pack(side=RIGHT)
     def fetch(self):
             text = self.ent.get() # get text form entry in this window
             d.entry.insert(0, text)# must insert in other window

d = First() #First window


From saint.infidel at gmail.com  Mon May  2 11:27:00 2005
From: saint.infidel at gmail.com (infidel)
Date: 2 May 2005 08:27:00 -0700
Subject: lists in cx_Oracle
In-Reply-To: <pan.2005.04.30.17.02.16.988085@dalkescientific.com>
References: <pan.2005.04.05.18.44.52.434578@dalkescientific.com>
	<pan.2005.04.30.17.02.16.988085@dalkescientific.com>
Message-ID: <1115047620.602263.180780@o13g2000cwo.googlegroups.com>

Something like this might work for you:

>>> ids= ['D102', 'D103', 'D107', 'D108']
>>> in_clause = ', '.join([':id%d' % x for x in xrange(len(ids))])
>>> sql = "select * from tablename where id in (%s)" % in_clause
>>> import cx_Oracle as ora
>>> con = ora.connect('foo/bar at geewhiz')
>>> cur = con.cursor()
>>> cur.execute(sql, ids)



From martin at v.loewis.de  Tue May 24 17:58:03 2005
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Tue, 24 May 2005 23:58:03 +0200
Subject: python24.zip
In-Reply-To: <x71x7wgxsn.fsf@handshake.de>
References: <mailman.249.1116595092.8733.python-list@python.org>
	<428e0cc3$0$29954$9b622d9e@news.freenet.de>
	<x7hdgw2zqi.fsf@handshake.de>
	<428faddd$0$26322$9b622d9e@news.freenet.de>
	<x7vf5bku5d.fsf@handshake.de>
	<4290dc79$0$9989$9b622d9e@news.freenet.de>
	<x71x7wgxsn.fsf@handshake.de>
Message-ID: <4293a36c$0$29967$9b622d9e@news.freenet.de>

Dieter Maurer wrote:
> The comparison between warm start (few disc io) and cold start
> (much disc io) tells you that the import process is highly
> io dominated (for cold starts).

Correct. However, I would expect that the contents of existing
directories is cached, and it might be that the absence of a directory
on sys.path is also cached (I know Linux does negative dentry caching).

> I know that this does not prove that the failing opens contribute
> significantly. However, a colleague reported that the
> "import.c" patch (essential for the reduction of the number of opens)
> resulted in significant (but not specified) improvements.

When I experimented with startup time for 2.4, I found that these
calls don't matter at all in any significant way (atleast not for
warm starts). Instead, I found that reducing the size of .pyc files,
by sharing interned strings, gives more speedup (and indeed, 2.4
changed the marshal format to accommodate shared interned strings).

So I would agree that IO makes a significant part of startup, but
I doubt it is directory reading (unless perhaps you have an
absent NFS server or some such).

Regards,
Martin


From rbt at athop1.ath.vt.edu  Wed May 18 22:39:49 2005
From: rbt at athop1.ath.vt.edu (rbt)
Date: Wed, 18 May 2005 22:39:49 -0400
Subject: socket programming and port scans
In-Reply-To: <hcidnSn9xJ_gKRbfRVnyjQ@eclipse.net.uk>
References: <d6gbsu$no1$1@solaris.cc.vt.edu>
	<hcidnSn9xJ_gKRbfRVnyjQ@eclipse.net.uk>
Message-ID: <d6gu9m$pnc$1@solaris.cc.vt.edu>

millerch wrote:
> Are you explicitly referencing the port for nmap, or is it a general 
> port scan?
> 
> The version of nmap I run only checks common ports unless a port range 
> is specified.

I did not know that. It works as expected now. Thanks!


From bill.mill at gmail.com  Fri May 20 13:50:21 2005
From: bill.mill at gmail.com (Bill Mill)
Date: Fri, 20 May 2005 13:50:21 -0400
Subject: Convert from numbers to letters
In-Reply-To: <1116608875.145410.308690@g14g2000cwa.googlegroups.com>
References: <1116511005.900715.107260@o13g2000cwo.googlegroups.com>
	<1116519193.037429.93560@o13g2000cwo.googlegroups.com>
	<1116529140.470352.129690@z14g2000cwz.googlegroups.com>
	<mailman.224.1116530388.8733.python-list@python.org>
	<1116535087.901874.167870@g43g2000cwa.googlegroups.com>
	<1116541217.303770.314860@f14g2000cwb.googlegroups.com>
	<1116596845.792019.40340@g14g2000cwa.googlegroups.com>
	<6_udnUizapsdnhPfRVn-vw@comcast.com>
	<1116608875.145410.308690@g14g2000cwa.googlegroups.com>
Message-ID: <797fe3d40505201050156e16b9@mail.gmail.com>

On 20 May 2005 10:07:55 -0700, Jason Drew <jasondrew72 at gmail.com> wrote:
> Hey, that's good. Thanks Steve. Hadn't seen it before. One to use.
> 
> Funny that Pythonwin's argument-prompter (or whatever that feature is
> called) doesn't seem to like it.
> 
> E.g. if I have
> def f(tupl):
>     print tupl
> 
> Then at the Pythonwin prompt when I type
> f(
> I correctly get "(tupl)" in the argument list pop-up box.
> 
> But if I have
> def f((a, b)):
>     print a, b
> 
> then when I type
> f(
> I just get "(.0)" in the argument list pop-up box.
> 
> Or with
> def f(p, q, (a, b)):
>     pass
> Pythonwin prompts with
> "(p, q, .4)"
> 
> 
> However in each case the help() function correctly lists all the
> arguments. Strange. I'll check if it's a known "feature".

That sounds like a bug in pythonwin autocomplete. Tuple unpacking in
function arguments is definitely a known feature, there were some
recent (fairly extensive) clp threads about it.[1]

I wish people would use it more, I think it's an awesome feature when
properly used. I like it especially for signatures like "def
change_coord((x, y))". It was one of those features, for me, where I
just tried it without knowing of its existence, assuming it would
work, and I was pleasantly surprised that it did.

Peace
Bill Mill
bill.mill at gmail.com

[1] http://tinyurl.com/89zar

I think there was another about ways to improve tuple unpacking, but I
didn't find it in a brief search.

> 
> This is with
> "PythonWin 2.4 (#60, Feb  9 2005, 19:03:27) [MSC v.1310 32 bit (Intel)]
> on win32."
> 
> --
> http://mail.python.org/mailman/listinfo/python-list
>


From martin at v.loewis.de  Sat May 28 18:33:51 2005
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Sun, 29 May 2005 00:33:51 +0200
Subject: UTF16 codec doesn't round-trip?
In-Reply-To: <d7ajce$go8$1@newsg3.svr.pol.co.uk>
References: <d7ajce$go8$1@newsg3.svr.pol.co.uk>
Message-ID: <4298f1cf$0$18355$9b622d9e@news.freenet.de>

John Perks and Sarah Mount wrote:
> If the ascii can't be recognized as UTF16, then surely the codec
> shouldn't have allowed it to be encoded in the first place? I could
> understand if it was trying to decode ascii into (native) UTF32.

Please don't call the thing you are trying to decode "ascii". ASCII
is the name of the American Standard Code for Information Interchange;
it is a 7-bit code, and what you are trying to decode certainly isn't
ascii. Call it "bytes" instead.

So you are trying to decode bytes as UTF-16. The bytes you have
definitely are not UTF-16 - the specific sequence of bytes is invalid
in UTF-16. Therefore, the codec is right to reject it when decoding.

It might be considered as a bug that the codec encoded the characters
in the first place.

> On a similar note, if you are using UTF32 natively, are you allowed to
> have raw surrogate escape sequences (paired or otherwise) in unicode
> literals?

Python accepts such literals.

Regards,
Martin


From martin at v.loewis.de  Fri May 20 12:13:56 2005
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Fri, 20 May 2005 18:13:56 +0200
Subject: python24.zip
In-Reply-To: <mailman.249.1116595092.8733.python-list@python.org>
References: <mailman.249.1116595092.8733.python-list@python.org>
Message-ID: <428e0cc3$0$29954$9b622d9e@news.freenet.de>

Robin Becker wrote:
> Firstly should python start up with non-existent entries on the path?

Yes, this is by design.

> Secondly is this entry be the default for some other kind of python
> installation?

Yes. People can package everything they want in python24.zip (including
site.py). This can only work if python24.zip is already on the path
(and I believe it will always be sought in the directory where
python24.dll lives).

Regards,
Martin


From kay.schluehr at gmx.net  Fri May  6 01:42:30 2005
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: 5 May 2005 22:42:30 -0700
Subject: Hard times with packages and instances
In-Reply-To: <mailman.69.1115327340.29826.python-list@python.org>
References: <1115306696.185751.234020@o13g2000cwo.googlegroups.com>
	<mailman.69.1115327340.29826.python-list@python.org>
Message-ID: <1115358150.572169.241530@z14g2000cwz.googlegroups.com>

Fredrik Lundh wrote:
> Kay Schluehr wrote:
>
> > I wonder why the isinstance() function is sensitive about the
import
> > path i.e. the result depends not only on the class and the instance
but
> > also on how a class is imported?
>
> isinstance uses class object identity.
>
> if you manage to import the same thing multiple times, you'll have
> multiple class objects representing the same source code, and is-
> instance won't work properly.

Importing a class/module multiple times does not cause the problem.
Writing

  import ForeignPackage.B as B1
  import ForeignPackage.B as B2

in C.py does not destroy the identity B1 == B2. Perhaps it is recovered
from sys.modules["ForeignPackage.B"]? It is not actually isinstance()
that depends on path information but the module recovery. The importer
seems to disambiguate to greedy.

>
> > Example:
> >
> > MyPackage/ Top-level package
> >       __init__.py Initialize package
> >       __me__.py                 Module used for setting Python-path
> >       A.py                      Use objects of ForeignPackage and
> >                                 subpackages
> >       ForeignPackage/ Don't touch!
> >             __init__.py         Initialize package
> >             B.py                Defines class B1
> >       MySubPackage/ Subpackage
> >             __init__.py         Initialize subpackage
> >     C.py                Defines instance checker for B1 instances
>
> in my newsreader, it looks like the C.py module is defined some-
> where inbetween MyPackage and MyPackage/ForeignPackage.
> what file system are you using? ;-)

This is surprisingly irrelevant. I used __me__.py for several projects
under Win2K without harm. Python seems to be more intelligent in path
handling than Windows.

> (I don't have the energy to decipher your convoluted import
> and path-manipulation code;
> but my intuition tells me that if
> you flatten the hierarchy, put MyPackage and ForeignPackage
> at the same level, and stop messing with the path inside the
> __init__ files, your problems will just disappear).

Flattening the package structure would solve the problem as well as
destroying all file-system based packages and abandon them from Python.
A bad joke? Yes, but managing all code using a database instaed of an
OS dependent filesys would make sense to me. 

Ciao,
Kay



From flamesrock at gmail.com  Wed May 11 20:04:48 2005
From: flamesrock at gmail.com (flamesrock)
Date: 11 May 2005 17:04:48 -0700
Subject: BluWater: God is not a man
In-Reply-To: <d5u0h8$2i0$1@news1nwk.SFbay.Sun.COM>
References: <1115824563.613661.169620@g47g2000cwa.googlegroups.com>
	<1115839435.018664.70230@f14g2000cwb.googlegroups.com>
	<d5u0h8$2i0$1@news1nwk.SFbay.Sun.COM>
Message-ID: <1115856288.290025.64560@g14g2000cwa.googlegroups.com>

I'm curious, why is everyone talking about jesus on comp.lang.python?



From michele.simionato at gmail.com  Tue May  3 10:33:44 2005
From: michele.simionato at gmail.com (Michele Simionato)
Date: 3 May 2005 07:33:44 -0700
Subject: Documenting Python code.
In-Reply-To: <1115128200.628997@hqnntp01.autodesk.com>
References: <1115128200.628997@hqnntp01.autodesk.com>
Message-ID: <1115130824.081747.287320@f14g2000cwb.googlegroups.com>

I would say reStructuredText is the preferred format
for documenting Python code. Google is your friend.

           Michele Simionato



From simon.brunning at gmail.com  Mon May 23 08:09:52 2005
From: simon.brunning at gmail.com (Simon Brunning)
Date: Mon, 23 May 2005 13:09:52 +0100
Subject: Access lotus notes using Python
In-Reply-To: <lWike.155$NV3.3324@news1.nokia.com>
References: <lWike.155$NV3.3324@news1.nokia.com>
Message-ID: <8c7f10c6050523050953eb3624@mail.gmail.com>

On 5/23/05, Sateesh <sateeshkavuri at yahoo.com> wrote:
> Hi,
> Is it possible to access Lotus notes using Python? Can anyone provide me
> some pointers?

http://www.google.com/search?q=python+lotus+notes&btnI=Lucky

-- 
Cheers,
Simon B,
simon at brunningonline.net,
http://www.brunningonline.net/simon/blog/


From Florian.Lindner at xgm.de  Thu May 12 18:49:21 2005
From: Florian.Lindner at xgm.de (Florian Lindner)
Date: Fri, 13 May 2005 00:49:21 +0200
Subject: Escape spaces in strings
Message-ID: <d60fgh$oqr$04$1@news.t-online.com>

Hello,
is there a function to escape spaces and other characters in string for
using them as a argument to unix command? In this case rsync
(http://samba.anu.edu.au/rsync/FAQ.html#10)

Thx,

Florian


From vincent at visualtrans.de  Tue May  3 11:45:44 2005
From: vincent at visualtrans.de (vincent wehren)
Date: Tue, 3 May 2005 17:45:44 +0200
Subject: [Errno 9] Bad File Descriptor on Windows 2003 Server & Py 2.4.1
References: <d57sj2$amj$1@solaris.cc.vt.edu>
Message-ID: <d586ba$lqt$1@news1.zwoll1.ov.home.nl>

"rbt" <rbt at athop1.ath.vt.edu> schrieb im Newsbeitrag 
news:d57sj2$amj$1 at solaris.cc.vt.edu...
| The below script produces a '[Errno 9] Bad File Descriptor' when
| executed. If I remove the try: except: statements, the script stops when
| the error occurs.
|
| The purpose of the script is to monitor the size of the three main logs
| on a Windows 2003 server and send and email should any of the logs get
| shorter. It works fine... just don't know *why* it produces the '[Errno
| 9] Bad File Descriptor' error.
|
| I'm running Python 2.4.1 on Windows 2003 SP1 Server with no funky win32
| extensions ;)
|
| logs = ['AppEvent.Evt', 'SecEvent.Evt', 'SysEvent.Evt']
|
| app_size = 0
| sec_size = 0
| sys_size = 0
|
| def send_email(LogName, old_size, new_size):
|     f = "Somebody<XXXXXXXXX at vt.edu>"
|     t = "Somebody_Else at vt.edu"
|
|     msg = MIMEText("""old_size = %d, new_size = %d""" %(old_size,
| new_size))
|
|     msg["Subject"] = "%s Log Just Got Shorter" %LogName
|     msg["Message-id"] = email.Utils.make_msgid()
|     msg["From"] = f
|     msg["To"] = t
|
|     h = "smtp.vt.edu"
|     s = smtplib.SMTP(h)
|     s.sendmail(f, t, msg.as_string())
|     s.quit()
|
| while 1:
|
|     for log in logs:
|
|         try:
|
|             a = os.stat('C:\WINDOWS\System32\config\%s' %log)

Without looking at the rest of script:

Try using either escaped backslashes as in:

a = os.stat('C:\\WINDOWS\\System32\\config\\%s' %log)

or a raw string (as long as it doesn't end with a single backslash) as in:

a = os.stat(r'C:\WINDOWS\System32\config\%s' %log)

or simply use forward slashes as in:

a = os.stat('C:/WINDOWS/System32/config/%s' %log)




--

Vincent Wehren







|             cur_size = a[6]
|             print log
|             print "cur_size", cur_size
|
|             if log == 'AppEvent.Evt':
|                 print "old_size", app_size, "\n"
|                 if cur_size >= app_size:
|                     app_size = cur_size
|                     time.sleep(6)
|                     continue
|                 else:
|                     send_email(log, app_size, cur_size)
|                     time.sleep(6)
|                     continue
|
|             elif log == 'SecEvent.Evt':
|                 print "old_size", sec_size, "\n"
|                 if cur_size >= sec_size:
|                     sec_size = cur_size
|                     time.sleep(6)
|                     continue
|                 else:
|                     send_email(log, sec_size, cur_size)
|                     time.sleep(6)
|                     continue
|
|             else:
|                 print "old_size", sys_size, "\n"
|                 if cur_size >= sys_size:
|                     sys_size = cur_size
|                     time.sleep(6)
|                     continue
|                 else:
|                     send_email(log, sys_size, cur_size)
|                     time.sleep(6)
|                     continue
|
|         except Exception, e:
|             fp7 = file('log_mon_exception.txt', 'a')
|             print >> fp7, e
|             fp7.close() 




From timothy at open-networks.net  Tue May 17 03:06:28 2005
From: timothy at open-networks.net (Timothy Smith)
Date: Tue, 17 May 2005 17:06:28 +1000
Subject: Windows distribution suggestions?
In-Reply-To: <7x3bsmfjdg.fsf_-_@ruckus.brouhaha.com>
References: <7x3bsmfjdg.fsf_-_@ruckus.brouhaha.com>
Message-ID: <428997F4.4070405@open-networks.net>

Paul Rubin wrote:

>As what must be penance for something or other, I'm needing to release
>a Python app for use under Windows XP.  Please be gentle with me since
>I'm a Un*x weenie and the only thing I've had much practice with under
>Windows is rebooting it.
>
>My app contains three different programs (say alice.py, bob.py, and
>carol.py) that need to be independently launchable, and a dozen or so
>other .py files that get imported into those first three.  What I'd
>really really like is to make a single installer called (say)
>"app.exe".  Launching app.exe should completely install Python, unpack
>all the necessary modules, and make three icons (alice, bob, carol) on
>the desktop.
>
>I know there's various ways of building Windows distros like that, but
>am not sure what's currently preferred.  Gordon McMillan's site
>www.mcmillan-inc.com has had its domain expire (he really should renew
>it before some squatter grabs it!) and the mirror that I've found
>indicates that it was last updated for Python 2.3.  I wrote my app
>under 2.4 and while I don't think I depend heavily on any 2.4
>features, I'd rather not have to downgrade just to make this exe
>installer.  There's also py2exe--is that as good?  
>
>Also, what's the preferred way of releasing updates?  That is, let's
>say I want to update my .py files and release a new version fairly
>frequently--should I just make a new .exe every time?  Would launching
>the new one cleanly overwrite or uninstall the old one?  Total
>coolness would be a way to ship an "update.py" along with the app,
>that syncs the app up to a Subversion repository, but that may be
>asking a bit much.
>
>I do have Visual C++ installed on the development machine, if that helps
>  
>

i have just gone through this process myself. if your sure your only 
distributing the app to windows xp system, then it's perfectly possible 
to update from an svn by using pysvn. pysvn doesn't currently work on 
win9x clients.
py2exe - use it, it's damn good. it puts all your library's in a 
library.zip file which can then use to update your app.
make a nice neat installer using NSIS, you can even use it to send 
manual patches if you need to.
if you need any help making the pysvn or other parts work give me an 
email i can help.



From hguo at uci.edu  Wed May 25 20:04:03 2005
From: hguo at uci.edu (haihui guo)
Date: Wed, 25 May 2005 17:04:03 -0700
Subject: vim configuration for python
References: <d73255$e8b$1@nntp1.jpl.nasa.gov>
Message-ID: <opsrcvs1rj16lspe@shuttle>

I think you can do

set tabstop=4

also, it's better to

set expandtab

so, the tab will be expanded as space.

HG
On Wed, 25 May 2005 16:36:04 -0700, Leonard J. Reder <reder at jpl.nasa.gov>  
wrote:

> Hello,
>
> I am looking at configuring vim for Python.  Most importantly I
> need 4 spaces when the tab is hit.  I am searching and getting
> a bit confused.  Does anyone know where I can find a set of
> ready made .vimrc and ~/.vim/syntax/python.vim.  If could find
> c.vim and cpp.vim these would be useful also.
>
> Thanks for any pointer.
> Len



-- 
Using Opera's revolutionary e-mail client: http://www.opera.com/m2/


From jepler at unpythonic.net  Thu May 19 19:10:20 2005
From: jepler at unpythonic.net (Jeff Epler)
Date: Thu, 19 May 2005 18:10:20 -0500
Subject: Shift-JIS to UTF-8 conversion
In-Reply-To: <1116536705.864784.163540@o13g2000cwo.googlegroups.com>
References: <1116536705.864784.163540@o13g2000cwo.googlegroups.com>
Message-ID: <20050519231017.GB23128@unpythonic.net>

I think you do something like this (untested):

import codecs

def transcode(infile, outfile, incoding="shift-jis",
        outcoding="utf-8"):
    f = codecs.open(infile, "rb", incoding)
    g = codecs.open(outfile, "wb", outcoding)

    g.write(f.read())
# If the file is so large that it can't be read at once, do a loop which
# reads and writes smaller chunks
#    while 1:
#        block = f.read(4096000)
#        if not block: break
#        g.write(block)

    f.close()
    g.close()

Jeff
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From cjbottaro at alumni.cs.utexas.edu  Fri May 13 11:14:27 2005
From: cjbottaro at alumni.cs.utexas.edu (Christopher J. Bottaro)
Date: Fri, 13 May 2005 10:14:27 -0500
Subject: How to find the classname of an object? (was Python Documentation)
References: <mailman.503.1115940149.29826.python-list@python.org>
	<hGRge.14335$941.9700@trnddc08> <4283fda8.18221170@news.oz.net>
	<d62dg3$tpe$1@sea.gmane.org>
Message-ID: <d62fpi$5ua$1@sea.gmane.org>

Christopher J. Bottaro wrote:

> Bengt Richter wrote:
> 
>>  >>> type(obj)
>>  <class '__main__.A'>
>>  >>> type(obj).mro()
>>  [<class '__main__.A'>, <class '__main__.B1'>, <class '__main__.B2'>,
>>  [<class '__main__.C'>, <type 'object'>]
>>  >>> tuple(x.__name__ for x in type(obj).mro())
>>  ('A', 'B1', 'B2', 'C', 'object')
> 
> Wow awesome, thats exactly what I was looking for.

Wait a sec...why doesn't the following code work then?

class FWException(Exception): pass
class FWA(FWException): pass
class FWB(FWA): pass
class FWC(FWB): pass
e = FWC()
print [ cl.__name__ for cl in type(e).mro() ]

Thanks again.
--C



From elbertlev at hotmail.com  Fri May 13 07:33:29 2005
From: elbertlev at hotmail.com (elbertlev at hotmail.com)
Date: 13 May 2005 04:33:29 -0700
Subject: Reg php equivalent Mail_mime Module in Python
In-Reply-To: <mailman.17.1115978642.29328.python-list@python.org>
References: <mailman.17.1115978642.29328.python-list@python.org>
Message-ID: <1115984009.846047.116450@g49g2000cwa.googlegroups.com>

Look for:
http://sourceforge.net/projects/pymaillib/



From almad at include.cz  Fri May  6 17:26:00 2005
From: almad at include.cz (Almad)
Date: Fri, 06 May 2005 23:26:00 +0200
Subject: handling more databases with ZEO
Message-ID: <d5gnda$of3$1@news.vol.cz>

Hello, 

I'm using zodb with zeo and I want to connect to more databases from my
application. On server side, it's no problem, I just set up second
filestorage: 

<filestorage 1>
        path /var/www/databases/zodb/almad-net.fs
</filestorage>
<filestorage 2>
        path /var/www/databases/zodb/azilla.fs
</filestorage>

However, I dunno how to connect from app. Currently, I'm using

serverData = {
                'shelf' : Shelf(('localhost', 11000), [Cat1, Cat2])
        }

I dunno where to pass any argument to let ZEO knew where I'm connecting to.
Please let me knew any resource where this is described...

Thanks, 
-- 
Lukas "Almad" Linhart
[:: http://www.almad.net/ ::]


From a at b.c  Sun May 29 21:49:06 2005
From: a at b.c (D H)
Date: Sun, 29 May 2005 20:49:06 -0500
Subject: Case Sensitive, Multiline Comments
In-Reply-To: <1117137316.140791.210430@g14g2000cwa.googlegroups.com>
References: <1117137316.140791.210430@g14g2000cwa.googlegroups.com>
Message-ID: <z5adnQMsOLiL7AffRVn-hQ@comcast.com>

Elliot Temple wrote:
> Hi I have two questions.  Could someone explain to me why Python is
> case sensitive?  I find that annoying.  

I do too.  As you've found, the only reason is because it is, and it is 
too late to change (it was even too late back in 1999 when it was 
considered by Guido).  I guess the most popular case-insensitive 
language nowadays is visual basic (and VB.NET).

 > Also, why aren't there
> multiline comments?  Would adding them cause a problem of some sort?

Again, just because there aren't and never were.  There is no technical 
reason (like for example a parsing conflict) why they wouldn't work in 
python.  That's why most python editors have added a comment section 
command that prepends # to consecutive lines for you.


From piet at cs.uu.nl  Tue May 31 06:37:45 2005
From: piet at cs.uu.nl (Piet van Oostrum)
Date: Tue, 31 May 2005 12:37:45 +0200
Subject: write to the same file from multiple processes at the same time?
References: <e3617$429713d7$3eb01f24$9096@news.flashnewsgroups.com>
	<1117202905.257767.257270@g43g2000cwa.googlegroups.com>
	<e4d41$429ad9a5$3eb01f24$10471@news.flashnewsgroups.com>
Message-ID: <wzbr6r3cli.fsf@ordesa.lan>

Isn't a write to a file that's opened as append atomic in most operating
systems? At least in modern Unix systems. man open(2) should give more
information about this.

Like:
f = file("filename", "a")
f.write(line)
f.flush()

if line fits into the stdio buffer. Otherwise os.write can be used.

As this depends on the OS support for append, it is not portable. But
neither is locking. And I am not sure if it works for NFS-mounted files.
-- 
Piet van Oostrum <piet at cs.uu.nl>
URL: http://www.cs.uu.nl/~piet [PGP]
Private email: piet at vanoostrum.org


From jstroud at mbi.ucla.edu  Sun May  8 20:37:48 2005
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Sun, 8 May 2005 17:37:48 -0700
Subject: __brace__ (PEP?)
In-Reply-To: <roy-DE30BB.20151208052005@reader1.panix.com>
References: <mailman.175.1115594947.29826.python-list@python.org>
	<roy-DE30BB.20151208052005@reader1.panix.com>
Message-ID: <200505081737.48388.jstroud@mbi.ucla.edu>

On Sunday 08 May 2005 05:15 pm, Roy Smith wrote:
> This seems like a pretty esoteric operation to devote a bit of syntax to.
> It doesn't seem like something people want to do very often.

Similar to __call__, I don't think that this syntax would be neccessarily 
devoted to any particular operation. I'm simply offering cross-sectioning as 
a potential and intuitive operation that would benefit from a shortcut. The 
main point is that using braces after a name is not defined right now and I 
think that they could be put to good use.

James

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From dave at pythonapocrypha.com  Tue May 17 20:41:56 2005
From: dave at pythonapocrypha.com (Dave Brueck)
Date: Tue, 17 May 2005 18:41:56 -0600
Subject: speeding up Python
In-Reply-To: <3evgihF56gtkU1@individual.net>
References: <3evgihF56gtkU1@individual.net>
Message-ID: <428A8F54.8030909@pythonapocrypha.com>

Luis P. Mendes wrote:
> I have a 1000 line python script that takes many hours to finish.  It is 
> running with six inside 'for' loops.

Hi Luis,

Before going too much into optimizing your current code, you might want to take 
a step back and see if another approach to your problem might work instead. 
Python is great for this sort of algorithmic experimentation.

So: what are you doing? In particular, why SIX nested loops?

It's not uncommon for a different algorithm to yield performance improvements 
that are orders of magnitude greater than what just optimizing the code could 
achieve.

-Dave


From mforal at gmail.com  Fri May 13 12:32:30 2005
From: mforal at gmail.com (mitchell)
Date: 13 May 2005 09:32:30 -0700
Subject: Dynamic doctests?
Message-ID: <1116001950.734967.303100@g47g2000cwa.googlegroups.com>

I'm trying to execute doc tests without writing to the filesystem (i.e.
in the Python interpreter). I have something like:

  """
  Docstring:
  >>> n
  6
  """

  # Code:
  n=6

  import doctest
  doctest.testmod()

The tests all pass when saving this text to a python script (as it
should), but when I load this text into a string and run:

  code='"""\n>>> n\n6\n"""\nn=6\nimport doctest\ndoctest.testmod()'
  exec(code)

I get:

  Traceback (most recent call last):
    File "<stdin>", line 1, in ?
    File "<string>", line 7, in ?
    File "/usr/lib/python2.4/doctest.py", line 1841, in testmod
      for test in finder.find(m, name, globs=globs,
extraglobs=extraglobs):
    File "/usr/lib/python2.4/doctest.py", line 851, in find
      self._find(tests, obj, name, module, source_lines, globs, {})
    File "/usr/lib/python2.4/doctest.py", line 914, in _find
      for valname, val in getattr(obj, '__test__', {}).items():
  AttributeError: 'function' object has no attribute 'items'

Can what I'm trying to do be done?

Any help is greatly appreciated.



From mackstevenson at hotmail.com  Sun May 15 19:32:57 2005
From: mackstevenson at hotmail.com (MackS)
Date: 15 May 2005 16:32:57 -0700
Subject: deleting the terminal prompt?
Message-ID: <1116199977.020208.311330@z14g2000cwz.googlegroups.com>

Dear all,

I just noticed the following behavior when I run

import os
import sys
import readline

histfile = os.path.join(os.environ["HOME"], ".pyhist")

try:
    readline.read_history_file(histfile)
except IOError:
    pass

import atexit
atexit.register(readline.write_history_file, histfile)
del os, histfile

while cmd != "":

    sys.stdout.write("prompt: ")
    cmd = raw_input()

    # at this point it studies the contents of cmd and decides what to
do next.

However, if the user simply presses Tab followed by a backspace  s/he
effectively makes the prompt disappear. Is there a way to prevent this
from happening?


Thanks for any help,

Mack



From sjmachin at lexicon.net  Sat May 28 06:26:25 2005
From: sjmachin at lexicon.net (John Machin)
Date: Sat, 28 May 2005 20:26:25 +1000
Subject: search/replace in Python
In-Reply-To: <d78opv$l99$1@domitilla.aioe.org>
References: <d78opv$l99$1@domitilla.aioe.org>
Message-ID: <42984751.5020607@lexicon.net>

Vamsee Krishna Gomatam wrote:
> Hello,
>     I'm having some problems understanding Regexps in Python. I want
> to replace "<google>PHRASE</google>" with
> "<a href=http://www.google.com/search?q=PHRASE>PHRASE</a>" in a block of 
> text. How can I achieve this in Python? Sorry for the naive question but 
> the documentation is really bad :-(

VKG,

Sorry you had such difficulty; if you can explain in a bit more detail, 
we could perhaps fix that "really bad" [compared with what?] documentation.

Whether you are doing a substitution programatically in Python, or in 
any other language, or manually using a text editor, you need to specify 
some input text, a pattern, and a replacement.

The syntax for pattern and replacement for what you want to do differs 
in only minor details (if at all) among major languages and common text 
editors, and it's been that way for years. For example, see the 
retro-computing museum exhibit at the end of this posting.

So, did you have any problem determining that PHRASE is represented by 
(.*) -- good enough if there is only one occurrence of your target -- in 
the pattern, and by \1 in the replacement?

Did you have a problem with this part of the docs (which is closely 
followed by an example with \1 in the replacement), and if so, what was 
the problem?

    sub( pattern, repl, string[, count])

    Return the string obtained by replacing the leftmost non-overlapping 

    occurrences of pattern in string by the replacement repl.

Have you used regular expressions before? If not, then you shouldn't 
expect to learn how to use them from the documentation, which does 
adequately _document_ the provided functionality. This is just like how 
the manual supplied with a new car documents the car's functionality, 
but doesn't attempt to teach how to drive it. If you haven't done so 
already, you may like to do what the documentation suggests:

consult the Regular Expression HOWTO, accessible from 
http://www.python.org/doc/howto/.

And out with the magic lantern ... here's the promised blast from the 
past, using Oliver's sample input:

C:\junk>dir \bin\ed.com
[snip]
30/11/1985  04:43p              18,936 ed.com
[snip]
C:\junk>ed
Memory available : 59K bytes
 >a
This is a <google>Python</google>. And some randomnonsense test.....
.
 >p
This is a <google>Python</google>. And some randomnonsense test.....
 >s/<google>\(.*\)<\/google>/<a 
href=http:\/\/www.google.com\/search?q=\1>\1<\/a>/
 >p
This is a <a href=http://www.google.com/search?q=Python>Python</a>. And 
some randomnonsense test.....
 >

Cheers,
John


From __peter__ at web.de  Thu May 26 02:38:05 2005
From: __peter__ at web.de (Peter Otten)
Date: Thu, 26 May 2005 08:38:05 +0200
Subject: Improve the performance of a loop
References: <1117058565.920549.221420@g47g2000cwa.googlegroups.com>
Message-ID: <d73qq9$hh5$02$1@news.t-online.com>

querypk at gmail.com wrote:

> What is the fastest way to code this particular block of code below..
> I used numeric for this currently and I thought it should be really
> fast..
> But, for large sets of data (bx and vbox) it takes a long time and I
> would like to improve.
> 
> vbox = array(m) (size: 1000x1000 approx)
> for b in bx:
>     vbox[ b[1], b[0]:b[2] ] = 0
>     vbox[ b[3], b[0]:b[2] ] = 0
>     vbox[ b[1]:b[3], b[0] ] = 0
>     vbox[ b[1]:b[3], b[2] ] = 0
> 
> and vbox is a 2D array
> where bx is of form [( int,int,int,int),(........) ]

You can try

for b0, b1, b2, b3 in bx:
    vbox[b1:b3, b0:b2+1:b2-b0] = 0
    vbox[b1:b3+1:b3-b1, b0:b2] = 0

By the way, the bottom/right cell of your box remains nonzero. Is that
intentional?

Peter



From rkern at ucsd.edu  Mon May  9 02:18:50 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Sun, 08 May 2005 23:18:50 -0700
Subject: Fredrik Lundh
In-Reply-To: <h9qdneSvU71kZuPfRVn-rw@comcast.com>
References: <mailman.139.1115189526.6583.python-list@python.org><maednQfrx_iwL-XfRVn-hA@powergate.ca>	<Av-dnbF5u_SOpOffRVn-vQ@comcast.com>	<mailman.66.1115324909.29826.python-list@python.org>	<k42dnWFaUMRQeePfRVn-pg@comcast.com>	<mailman.188.1115614698.29826.python-list@python.org>
	<h9qdneSvU71kZuPfRVn-rw@comcast.com>
Message-ID: <d5muur$po2$1@sea.gmane.org>

D H wrote:
> Robert Kern wrote:
> 
>>It's called Daily Python-URL not Daily Python-Like-Languages-URL. *That* 
>>explains it.
> 
> google for logix site:pythonware.com  He's announced plenty non-python 
> stuff that is of interest to python users, including plenty of marketing 
> for his own software.

Logix, though a language in its own right, is built on top of Python.

The Daily Python-URL isn't obligated to link to *anything*.

>  > It's not like Pythonware is hiding its relationship.
> 
> It hides any mention that Fredrik Lundh is behind it, which is deceitful 
> when he posts any smidgeon of praise his software gets, not admitting he 
> makes his income off support fees for that same software.

I think that reasonable people can draw a line. I would welcome more 
disclosure, however.

> He can try to smear me all he wants if he really thinks that will help 
> his business.

If he thinks that smearing you is going to help his business, he's 
sillier than I thought.

>>Funny you should mention that article since I showed that Fredrik's 
>>benchmarks were correctly done (if not diligently-reported) while Uche's 
>>were wrong on both marks.
>>
>>http://www.oreillynet.com/cs/user/view/cs_msg/51158
> 
> Funny how you link to your own post out of context.  You must have not 
> listened to any of the other comments.

Oh, I read all of them. No one has disputed my results either there or 
through email. Yes, Fredrik was out of line accusing of Uche of running 
benchmarks on different machines, but Uche was out of line with his 
entire article and never explained the anomalous results either.

I posted the link alone because, at the time, I had forgotten that I had 
a GreaseMonkey script installed that forwards to the print-friendly page 
without comments. I didn't realize what was going on until after I posted.

>>Oy, my head hurts. Take it off-list, both of you. The rest of us don't 
>>care about your bickering.
> 
> Yet again someone bitches about a thread right after they hypocritically 
> throw their own little darts into the mix.

Yes, you're right, and I apologize. But personal bickering like 
Fredrik's post and the line of yours that you snipped do belong 
off-list. And the "If he thinks that smearing..." line, too, but since 
I'm in for a penny...

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From matthew_shomphe at countrywide.com  Fri May 13 12:37:07 2005
From: matthew_shomphe at countrywide.com (Matt)
Date: 13 May 2005 09:37:07 -0700
Subject: How to find the classname of an object? (was Python Documentation)
References: <mailman.503.1115940149.29826.python-list@python.org>
	<hGRge.14335$941.9700@trnddc08> <4283fda8.18221170@news.oz.net>
	<d62dg3$tpe$1@sea.gmane.org>
	<mailman.32.1115997422.29328.python-list@python.org>
Message-ID: <1116002227.923231.309150@f14g2000cwb.googlegroups.com>


Christopher J. Bottaro wrote:
> Christopher J. Bottaro wrote:
>
> > Bengt Richter wrote:
> >
> >>  >>> type(obj)
> >>  <class '__main__.A'>
> >>  >>> type(obj).mro()
> >>  [<class '__main__.A'>, <class '__main__.B1'>, <class
'__main__.B2'>,
> >>  [<class '__main__.C'>, <type 'object'>]
> >>  >>> tuple(x.__name__ for x in type(obj).mro())
> >>  ('A', 'B1', 'B2', 'C', 'object')
> >
> > Wow awesome, thats exactly what I was looking for.
>
> Wait a sec...why doesn't the following code work then?
>
> class FWException(Exception): pass
> class FWA(FWException): pass
> class FWB(FWA): pass
> class FWC(FWB): pass
> e = FWC()
> print [ cl.__name__ for cl in type(e).mro() ]
>
> Thanks again.
> --C


Is it because you need to inherit from "object"?

class FWException(Exception, object): pass # note "object"
class FWA(FWException): pass
class FWB(FWA): pass
class FWC(FWB): pass
e = FWC()
print [ cl.__name__ for cl in type(e).mro()]

#prints ['FWC', 'FWB', 'FWA', 'FWException', 'Exception', 'object']



From eternl_knight at yahoo.com  Thu May 12 20:42:18 2005
From: eternl_knight at yahoo.com (eternl_knight at yahoo.com)
Date: 12 May 2005 17:42:18 -0700
Subject: Decompyle will not Compile.
In-Reply-To: <iM-dndOqGbASjR_fRVn-rA@powergate.ca>
References: <1115817619.315446.230860@g44g2000cwa.googlegroups.com>
	<iM-dndOqGbASjR_fRVn-rA@powergate.ca>
Message-ID: <1115944938.431321.40300@g49g2000cwa.googlegroups.com>

Yeah, I know the site. In fact, his service is based off of a
deriviative of the code I am trying to compile. Thanks though.

What I don't understand is the fact that I cannot locate either
"initdecompyle" or "marshal_20" in the source code, yet it appears to
compile on FreeBSD & Linux (given the fact that there are binary
packages for those platforms).



From jcomesana at gmail.com  Thu May  5 17:25:29 2005
From: jcomesana at gmail.com (=?iso-8859-1?q?Juan_Comesa=F1a?=)
Date: 5 May 2005 14:25:29 -0700
Subject: how to look up functions
References: <4I4S42$89a@bbs.wretch.cc>
Message-ID: <1115328329.179702.104830@f14g2000cwb.googlegroups.com>

slayer wrote:
> Hi all,
>  I am a python newbie. I need some help to loop up about API, or
reference.
> If any web that Java API Document, I will try it. Is there some one
like it
> or other ways?
> --

Go to http://www.python.org, there is a complete module reference
there. If you installed Python in Windows you already have the docs. If
you are a Linux user, install the python-docs package and take a look
at /usr/share/doc/python-docs-2.x.x (the name will depend on the
version or linux distro)

Bye



From nobody at nowhere.tv  Tue May 17 07:07:41 2005
From: nobody at nowhere.tv (I Know)
Date: Tue, 17 May 2005 11:07:41 GMT
Subject: Like Christ PBBUH Prayed
References: <1116096706.696830.275140@g44g2000cwa.googlegroups.com>
	<1116278323.413749.302480@z14g2000cwz.googlegroups.com>
Message-ID: <nobody-2C846B.07120417052005@nycmny-nntp-rdr-03-ge0.rdc-nyc.rr.com>

oh, just 
shut
the
fuck
up


From harold.fellermann at upf.edu  Tue May 10 09:09:31 2005
From: harold.fellermann at upf.edu (harold fellermann)
Date: Tue, 10 May 2005 15:09:31 +0200
Subject: Question about extending the interperter
In-Reply-To: <1115654593.479760.52610@o13g2000cwo.googlegroups.com>
References: <1115654593.479760.52610@o13g2000cwo.googlegroups.com>
Message-ID: <593a172323302592c1b4bcdae047609a@upf.edu>

> The problem for me is that the pointer "p" in the last function points
> to the arguments:
> If a user caller foo("123") - p points to '123'.
> What I need is to point it to the whole string received - 'foo
> ("123")'.
>
> Is there a way I can do this?

no. at least not a simple one. you can obtain the function name by 
func_name,
as the corresponding python code suggests:
 >>> def f() :
...     pass
...
 >>> print f.func_name
f

However, you still don't know, how the function has been invoked.
Consider:

 >>> g=f
 >>> print g.func_name
f

of course, the situation can be much more sphisticated. f could be a 
value
in a dict returned by some other function, and so on. Of course there 
are
ways to inspect the source code (like pdb or exceptions do), but are you
sure this is the functionality to want?

Cheers,

- harold -

--
Learn from the mistakes of others.
You can't live long enough to make them all yourself.
--



From hello at spamm.er  Mon May 23 19:54:24 2005
From: hello at spamm.er (alex goldman)
Date: Mon, 23 May 2005 16:54:24 -0700
Subject: What are OOP's Jargons and Complexities?
References: <1116843761.619249.144790@g47g2000cwa.googlegroups.com>
	<bAske.14563$yx.14338@fe08.lga>
Message-ID: <3584469.Aerji1NdQr@yahoo.com>

John W. Kennedy wrote:

> Strong
> typing has been a feature of mainstream programming languages since the
> late 1950's.

I'm just curious, what do you mean by /strong/ typing, and which strongly
typed languages do you know?


From phil at riverbankcomputing.co.uk  Wed May  4 04:24:52 2005
From: phil at riverbankcomputing.co.uk (Phil Thompson)
Date: Wed, 4 May 2005 09:24:52 +0100 (BST)
Subject: file parsing/watching + qt
In-Reply-To: <1115185382.052344.115030@g14g2000cwa.googlegroups.com>
References: <1115185382.052344.115030@g14g2000cwa.googlegroups.com>
Message-ID: <64695.82.68.80.137.1115195092.squirrel@river-bank.demon.co.uk>

> this is a Qt app. app should watch for changes in /var/log/isdn.log and
> on file change (like new line was added to isdn.log) it should activate
> event in my app.
>
> i'm trying to fetch last line in file whenever isdnlog logs something
> so that i can parse that line for a number and store it somewhere else,
> is there a standard solution for this?
>
> i'm using python2.3 on linux with PyQt3.

This is UNIX/Linux specific, but one way would be to use QProcess to run
"tail -f /var/log/isdn.log" and connect the readyReadStdout() signal to
the Python callable that will handle the line.

Phil



From jabel at plus.net  Wed May  4 12:34:50 2005
From: jabel at plus.net (John Abel)
Date: Wed, 04 May 2005 17:34:50 +0100
Subject: How do you convert a string obj to a file obj?
In-Reply-To: <d5at2j$7uv$1@vegh.ks.cc.utah.edu>
References: <d5at2j$7uv$1@vegh.ks.cc.utah.edu>
Message-ID: <4278F9AA.6000505@plus.net>

Matthew Thorley wrote:

>I'm writing a web app whereby a user uploads a tar acrhive which is then
>opened and processed. My web form reads the file like this:
>
>while 1:
>    data = value.file.read(1024 * 8) # Read blocks of 8KB at a time
>    if not data: break
>
>which leaves me with data as a string obj. The problem that I have is
>that the function that processes the archive expects a file object. So
>far the only solution I have found it to write the file to disk and then
>read it back.
>
>Is there an easy way to convert data, in the example above into a file
>object?
>
>Thanks
>-Matthew
>  
>
fileObj = StringIO.StringIO()
fileObj.write( data )

J



From freddie+usenet at madcowdisease.org  Wed May 25 10:45:18 2005
From: freddie+usenet at madcowdisease.org (Freddie)
Date: 25 May 2005 07:45:18 -0700
Subject: ANN: blamehangle 0.1.0
Message-ID: <mailman.135.1117117457.18027.python-announce-list@python.org>

(sorry if this appears several times, Australian usenet servers are
atrocious)

blamehangle is Yet Another IRC Bot Framework. Started in 2003 as a
replacement for a nasty perl monster, we're just now getting around to
releasing it. Useful features include:

* Asynchronous HTTP client.
* Threaded database lookups.
* Threaded DNS lookups.
* Multiple IRC network support.
* Possibly understandable plugin deveopment model.
* Useful collection of plugins.
* Sometimes actively developed!

blamehangle is available for download from the MadCowDisease web site:
http://www.madcowdisease.org/mcd/blamehangle

Or via Subversion at:
svn://svn.madcowdisease.org/blamehangle/tags/0.1.0 or
svn://svn.madcowdisease.org/blamehangle/trunk (for sometimes broken
trunk)

trunk is recommended, as there are several minor bugs fixed already.
oops!



From p at ulmcnett.com  Tue May 17 14:07:06 2005
From: p at ulmcnett.com (Paul McNett)
Date: Tue, 17 May 2005 11:07:06 -0700
Subject: Python forum
In-Reply-To: <d6da92$t8m$1@news.doit.wisc.edu>
References: <mailman.84.1116320178.8733.python-list@python.org>	<118k42k64ai7316@corp.supernews.com>	<mailman.107.1116345525.8733.python-list@python.org>
	<d6da92$t8m$1@news.doit.wisc.edu>
Message-ID: <428A32CA.9030109@ulmcnett.com>

Rocco Moretti wrote:
> Dave Brueck wrote:
> 
>>Grant Edwards wrote:
>>
>>>[In case you can't tell, I hate web forums.  I've never seen a
>>>single one with a suable UI.]
>>
>>Amen! Generally they are an abomination.
> 
> It may seem snobish, but my main gripe with most of the web-forums I've 
> seen is the people using them. There are far too many content-free "Me 
> too" posts, which are horribly difficult to filter out (due to the poor 
> UI). It's partly the web-forum's fault - the really bad ones have posts 
> with some cute/animated smiley as the sole content. It's rare that 
> usenet has such posts, because a colon and a right paren in text doesn't 
> seem nearly as interesting as some saccarine singing, dancing, yellow blob.

I think that web forums are great in one case: supporting nontechnical 
end users on the use and configuration of your product, in a 
free/community-based support arrangement. The forum needs a moderator to 
trim and condense as appropriate, and the help desk needs to monitor the 
forum and interface with the developers as necessary.

The benefits versus newsgroup/listserv in this case basically boil down to:
+ users already know how to use their web browser, but -let's be honest- 
it's a stretch to get them to subscribe to a list - you'd have to hold 
their hand through every step of the setup making it less costly to just 
offer free phone support for their issue.

But that's it. Otherwise, web forums just waste everyone's time.

So for a language like Python, where you presuppose that most people 
using the product are technically savvy enough to operate a newsreader 
or mail client, a web forum approach just isn't going to gain much 
popularity. Web forums for people that know how to use their computers 
are just a horrible waste of time, but perhaps more importantly people 
no longer have control over their environment and are forced to navigate 
a particular UI instead of being able to put together their own 
preferred approach.

-- 
pkm ~ http://paulmcnett.com



From Bill at SynectixLtd.com  Wed May  4 09:43:59 2005
From: Bill at SynectixLtd.com (Bill Davy)
Date: Wed, 4 May 2005 13:43:59 +0000 (UTC)
Subject: SWIG/Python2.4.1: "ImportError: dynamic module does not define init
	function (initSHIP)"
Message-ID: <d5ajiv$fc9$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>

Hello,

I am using SWIG-1.3.24 to make an extension (called SHIP) to Python2.4.1 and 
then running under IDLE (if that makes any difference) but when I "import 
SHIP" I get:

>>> import SHIP

Traceback (most recent call last):
  File "<pyshell#0>", line 1, in -toplevel-
    import SHIP
ImportError: dynamic module does not define init function (initSHIP)
>>>

Indeed, SHIP.py does not define an initSHIP.  It does have "import _SHIP"

SHIP_wrap.cpp (produced by SWIG) does have init_SHIP (defined to SWIG_init).

It seems to me I should not be editing SHIP.py (as made by SWIG) but it does 
seem to be missing something, or am I?

Thanks in advance,

   Bill

PS I gave up trying to use IDLE with a locally compiled debug version of 
Python - that's for another day (or week), but thanks for the assorted help 
I was given. 




From bounce.spam at driveway.splort  Mon May 16 11:35:47 2005
From: bounce.spam at driveway.splort (don hindenach)
Date: Mon, 16 May 2005 15:35:47 GMT
Subject: space saving retitle of thread
References: <1116096706.696830.275140@g44g2000cwa.googlegroups.com>
	<Etvhe.1353573$8l.349001@pd7tw1no>
	<1116112436.708034.81770@g44g2000cwa.googlegroups.com>
	<TgChe.17018$J12.8038@newssvr14.news.prodigy.com>
	<1116253807.845281.14430@g49g2000cwa.googlegroups.com>
Message-ID: <ZGh26eEmFvyP-pn2-dLQm7doF52Gp@localhost>

On Mon, 16 May 2005 14:30:07 UTC, "Johnny Gentile" 
<whocaresrmb at yahoo.com> wrote:

> And this is OK w/ Google?
> 

most assurredly not.  the google police will come to your house and 
shake it until all the electrons fall out, and you can no longer connect
to the internet

you Have Been Warned

-- 
 -don hindenach-
donh at audiosys dot com


From finite.automaton at gmail.com  Thu May  5 15:54:06 2005
From: finite.automaton at gmail.com (Lonnie Princehouse)
Date: 5 May 2005 12:54:06 -0700
Subject: python and glut
References: <kp7ee.1331058$35.49670814@news4.tin.it>
	<1115236689.318521.111420@z14g2000cwz.googlegroups.com>
	<bmsee.1336210$35.49849772@news4.tin.it>
Message-ID: <1115322846.254200.55370@f14g2000cwb.googlegroups.com>

Welcome to the exciting world of trying to make graphics work on Linux
=)

DRI is direct rendering.  The Module section of your XF8Config should
have:

    Load "glx"
    Load "dri"
    Load "GLCore"

That probably won't solve things.
Google for some combination of ("debian" + "xfree86" + your video
card), and also Google the error messages you get (e.g. "XFree86-DRI
missing on display" )

DRI not working could also be a permissions issue; check to see if it
works as root.

Once your XFree86 is set up properly, the Python OpenGL bindings should
work just fine.



From =?iso-8859-1?Q?lin=F8nut?= at bone.com  Mon May 23 08:55:25 2005
From: =?iso-8859-1?Q?lin=F8nut?= at bone.com (=?iso-8859-1?Q?Lin=F8nut?=)
Date: Mon, 23 May 2005 07:55:25 -0500
Subject: I want to ask you the most important question of your life. The
	question is: Are you saved? It is not a question of how good
	you are, nor if you are a church member,
	but are you saved? Are you sure you will go to Heaven when you die? The
	reason some people don't know for sure if they are going to
	Heaven when they die is because they just don't know. The good
	news is that you can know for sure you are going to Heaven. May
	22, 2005 12:10:55 pm
References: <1116778225.166227.128130@z14g2000cwz.googlegroups.com>
Message-ID: <PaadnadKsPMgTwzfRVn-oQ@comcast.com>

RLG101144 at yahoo.com poked his little head through the XP firewall and said:

> THE MOST IMPORTANT QUESTION OF YOUR LIFE
>
> This is the most important question of your life.
>
> The question is: Are you saved?

Yeah!  I'm saved!  I use Linux!

Hallelujah!

-- 
When all you have is a hammer, everything looks like a nail.


From fuzzyman at gmail.com  Wed May 11 08:02:19 2005
From: fuzzyman at gmail.com (Fuzzyman)
Date: 11 May 2005 05:02:19 -0700
Subject: Serving binary data from a cgi-script
In-Reply-To: <d5sjpk$hnl$1@news.web.de>
References: <1115802987.501881.282520@g14g2000cwa.googlegroups.com>
	<d5sjpk$hnl$1@news.web.de>
Message-ID: <1115812939.215702.285640@f14g2000cwb.googlegroups.com>

Yeah... I once spent ages going round in circles trying to track that
down. A happy way to spend an evening...

Regards,

Fuzzy
http://www.voidspace.org.uk/python



From tdelaney at avaya.com  Sun May  8 19:15:16 2005
From: tdelaney at avaya.com (Delaney, Timothy C (Timothy))
Date: Mon, 9 May 2005 09:15:16 +1000
Subject: Ask for a tool to protect my .pyc file :)
Message-ID: <338366A6D2E2CA4C9DAEAE652E12A1DE025204F4@au3010avexu1.global.avaya.com>

Lily Kakm wrote:

> when I distribute my software, I will give the users .pyc file (maybe
> I can use py2exe, but I think there's no essential different),
> because I don't like them to know my source code.

Leaving aside all other arguments of whether or not you should allow
your users to see your source code ...

The simplest method to compile python is to use Pyrex:
http://www.google.com.au/search?q=pyrex&btnI

It's almost-compatible syntax-wise with Python 2.2 (no augmented
assignment, no nesting classes, and classmethods don't appear to work -
probably static methods too).

Then you just have a single script which calls your first main module,
and everything else is in a shared library (.so, .pyd).

It's quite nice to be able to have identical source, copy the source
tree, rename files appropriately and be able to build using Pyrex (with
an appropriate setup.py).

Tim Delaney


From cjbottaro at alumni.cs.utexas.edu  Wed May 11 15:02:42 2005
From: cjbottaro at alumni.cs.utexas.edu (Christopher J. Bottaro)
Date: Wed, 11 May 2005 14:02:42 -0500
Subject: Python Documentation (should be better?)
References: <d5tjng$kae$1@sea.gmane.org>
Message-ID: <d5tke6$kae$2@sea.gmane.org>

Christopher J. Bottaro wrote:

> ...blah blah blah...

Heh, silly me...there is already a huge thread about this...kinda.

The intricacies of the computing term "greedy" aside, yes I think the Python
documentation should generally be better.  What that means, I have no idea. 
All I know is that I like PHP's documentation and it should be like that. 
My question is, why is PHP's documentation so good and Python's mediocre? 
Does it have to do with corporate backing (I have no idea if PHP is or not,
I'm just saying)?  The quality/quantity of volunteers?  The design of the
language itself?



From poisondart985 at gmail.com  Fri May 27 21:50:14 2005
From: poisondart985 at gmail.com (poisondart)
Date: 27 May 2005 18:50:14 -0700
Subject: Software licenses and releasing Python programs for review
Message-ID: <1117245014.218831.317750@g14g2000cwa.googlegroups.com>

Hi,

I'm not sure if this is the right group to post this. If not, then I
would appreciate if somebody could point me to the correct group.

This is my first time releasing software to the public and I'm wanting
to release a Python program I wrote for review (and critique) and
testing on other platforms, but also I would like to explore the
different software licenses that are available (there seems to be
many). Since the specification for the programs is knowledge-centric
(related to linguistics), I need a group of people that are
knowledgeable in this area. Is there a place where I can advertise to
look for people who are knowledgeable in Python and linguistics?

Ultimately I desire two things from the license (but not limited to):
- being able to distribute it freely, anybody can modify it
- nobody is allowed to make profit from my code (other than myself)

What is the methodology that people employ to releasing software?

Thank you.



From kay.schluehr at gmx.net  Mon May 16 11:51:32 2005
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: 16 May 2005 08:51:32 -0700
Subject: python-dev Summary for 2005-04-16 through 2005-04-30
In-Reply-To: <mailman.13.1116201983.8733.python-list@python.org>
References: <mailman.13.1116201983.8733.python-list@python.org>
Message-ID: <1116258692.305537.244260@g49g2000cwa.googlegroups.com>


Tony Meyer wrote:
> [The HTML version of this Summary is available at
> http://www.python.org/dev/summary/2005-04-16_2005-04-30.html]
>
>
>
> ======================
> Summary Announcements
> ======================
>
> ---------------
> Exploding heads
> ---------------
>
> After a gentle introduction for our first summary, python-dev really
let
> loose last fortnight; not only with the massive PEP 340 discussion,
but
> also more spin-offs than a `popular`_ `TV`_ `series`_, and a few
> stand-alone threads.
>
> Nearly a week into May, and the PEP 340 talk shows no sign of
abating;

Thanks Tony,

but PEP 340 is already withdrawn by the BDFL. [1]
There won't be any Ruby-like blocks because they hide control flow.

Regards,
Kay

[1] http://www.python.org/peps/



From magicmas at spymac.com  Sun May 29 04:04:16 2005
From: magicmas at spymac.com (cheng)
Date: 29 May 2005 01:04:16 -0700
Subject: need help of RE
In-Reply-To: <mailman.230.1117353059.18027.python-list@python.org>
References: <1117352350.179209.206930@z14g2000cwz.googlegroups.com>
	<mailman.230.1117353059.18027.python-list@python.org>
Message-ID: <1117353856.521329.149040@f14g2000cwb.googlegroups.com>

i try

theString= theString.lower()
print re.split(r'\W+',theString)

the reslut is :
['', 'word1', 'word2', 'word3', '']

how can i fix the statment to get 

['word1', 'word2', 'word3']



From fredrik at pythonware.com  Fri May 20 10:21:43 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Fri, 20 May 2005 16:21:43 +0200
Subject: a re problem
References: <1116597929.339491.54870@g49g2000cwa.googlegroups.com>
Message-ID: <d6krnp$aeb$1@sea.gmane.org>

"cheng" <magicmas at spymac.com> wrote:

> >>> p.sub('','a\nbc')
> 'abc'
> >>> p.sub('','%s') % "a\nbc"
> 'a\nbc'
>
> is it anyone got some idea why it happen?

>>> p.sub('', 'a\nbc')
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
NameError: name 'p' is not defined

>>> import re
>>> p = re.compile("\n*")
>>> p.sub("", "a\nbc")
'abc'
>>> p.sub("", "%s")
'%s'

</F>





From larswarholm at gmail.com  Wed May 11 05:58:03 2005
From: larswarholm at gmail.com (Lars)
Date: 11 May 2005 02:58:03 -0700
Subject: Put a file on an ftp server over ssl
References: <1115749959.870607.20720@o13g2000cwo.googlegroups.com>
	<mailman.312.1115754553.29826.python-list@python.org>
	<1115755428.196173.213360@f14g2000cwb.googlegroups.com>
Message-ID: <1115805483.903002.109830@g14g2000cwa.googlegroups.com>

Daniel,

Why don't you just use the 'sftp' command line program, it's available
for all unixes and I bet you can find a build for windows to? Then you
could just do an os.system(..) and be done with it.

Cheers!
Lars



From skromta at gmail.com  Tue May 24 09:23:53 2005
From: skromta at gmail.com (Kalle Anka)
Date: Tue, 24 May 2005 13:23:53 +0000 (UTC)
Subject: \l operation in regular expressions
Message-ID: <loom.20050524T151323-267@post.gmane.org>

I've started to play around with regexps in Python and I tried
something like this

print re.sub( r'(\bw\w+\b)', r'\u\1', 'will it work')

and get

\uwill it \uwork

when I had expected

Will it Work

I tried to find some documentation about this but I can't find anything
that says if operations like \l \L \u \U etc are supported or not. It
doesn't look like it supported? What is the "Python way" of doing this,
writing a function and use that as the replacement?




From Servatius.Brandt at fujitsu-siemens.com  Wed May 25 12:09:40 2005
From: Servatius.Brandt at fujitsu-siemens.com (Brandt, Servatius)
Date: Wed, 25 May 2005 18:09:40 +0200
Subject: Build error  Python 2.4.1 - stat problem?
Message-ID: <DE26E293539224499409D3E333E3367F0189FB52@ABGEX02E.abg.fsc.net>

Hello,

I found the solution of my problems.  The configure script decided to
switch on large file support, but the #defines set in pyconfig.h caused
an inconsistency between the stat function calls (32 bit versions) and
the stat structures used (64 bit versions).  After I switched off the
large file support manually in pyconfig.h, all works fine.

Maybe someone could change the configure script so that it tests whether
the large files support really works (create a file of a few bytes and
test its size)?

- Servatius

------------------------------------------------------------------------
Servatius Brandt             Phone: +49 89 636-41504
Fujitsu Siemens Computers    Fax:   +49 89 636-48716
EP SW AD C++                 Email: Servatius.Brandt at fujitsu-siemens.com


From rkern at ucsd.edu  Thu May 19 02:49:52 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Wed, 18 May 2005 23:49:52 -0700
Subject: What's the use of changing func_name?
In-Reply-To: <311b5ce1050518231650b3b53e@mail.gmail.com>
References: <311b5ce105051822477c09c81@mail.gmail.com>	<d6ha7v$kh9$1@sea.gmane.org>
	<311b5ce1050518231650b3b53e@mail.gmail.com>
Message-ID: <d6hcst$qop$1@sea.gmane.org>

could ildg wrote:
> Thank you for your help.
> I know the function g is changed after setting the func_name.
> But I still can't call funciton g by using f(), when I try to do
> this, error will occur:
> <code>
> 
>>>>g.func_name="f"
>>>>print g
> 
> <function f at 0x00B2CEB0>
> 
>>>>f()
> 
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
> NameError: name 'f' is not defined
> </code>
> Since the name of g is changed into f, why can't I call it by using f()?
> Should I call it using f through other ways? Please tell me. Thanks~

Others have answered this particular question, but you're probably still 
wondering what is the use of changing .func_name if it doesn't also 
change the name by which you call it. The answer is that there are tools 
that use the .func_name attribute for various purposes. For example, a 
documentation generating tool might look at the .func_name attribute to 
make the proper documentation. Actually, that's probably *the* biggest 
use case because I can't think of any more significant ones.

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From edvard+news at majakari.net  Tue May 10 04:26:16 2005
From: edvard+news at majakari.net (Edvard Majakari)
Date: Tue, 10 May 2005 11:26:16 +0300
Subject: Unique Elements in a List
References: <1115676903.432187.294910@z14g2000cwz.googlegroups.com>
	<Michael.J.Fromberger-1445B3.20072709052005@localhost>
Message-ID: <87ll6nij13.fsf@titan.staselog.com>

"Michael J. Fromberger" <Michael.J.Fromberger at Clothing.Dartmouth.EDU> writes:

> One reasonable solution might be as follows:
>
>   def unique_elts(seq):
>     elts = {}
>     for pos, elt in enumerate(seq):
>       elts.setdefault(elt, []).append(pos)
>
>     return [ (x, p[0]) for (x, p) in elts.iteritems()
>              if len(p) == 1 ]

This is neat. Being lazy (the wrong way) I've never payed much attention why
would I need dict.setdefault() when I have things as dict.get(k, [def]). This
was a nice example of good use for setdefault() because it works like
dict.get() except it also sets the value if it didn't exist.

+1 IOTW (idiom of the week).

-- 
# Edvard Majakari		Software Engineer
# PGP PUBLIC KEY available    	Soli Deo Gloria!

$_ = '456476617264204d616a616b6172692c20612043687269737469616e20'; print
join('',map{chr hex}(split/(\w{2})/)),uc substr(crypt(60281449,'es'),2,4),"\n";


From gdamjan at gmail.com  Thu May  5 10:22:27 2005
From: gdamjan at gmail.com (Damjan)
Date: Thu, 05 May 2005 16:22:27 +0200
Subject: a cx_Oracle ORA-01036 problem
Message-ID: <427a2b39_2@x-privat.org>

I'm using Python 2.4, cx_Oracle-4.1 on Linux with Oracle instant client
10.1.0.3. This is the sql string:

SQL = """insert into D.D_NOTIFY values (:CARDREF, :BANKKEY, :OK1, :OK2 \
        :DEBTEUR, :DEBTDEN, to_date(:INVOICE_DATE,'DD.MM.YY'),
        to_date(:PAYMENT_DEADLINE,'DD.MM.YY'), :POINTS)"""

And I'm trying to execute it as:
        c = db.cursor()
        c.execute(SQL, CARDREF=id, BANKKEY=dc_kluc, OK1=okd, OK2=okc,                   
          DEBTEUR=iznos_eur, DEBTDEN=iznos_mkd, INVOICE_DATE=datum_g,           
          PAYMENT_DEADLINE=datum_d, POINTS=bodovi)

And I get an ORA-01036 exception.

I also have tried
        args = dict(CARDREF=id, BANKKEY=dc_kluc, OK1=okd, OK2=okc,       
          DEBTEUR=iznos_eur, DEBTDEN=iznos_mkd, INVOICE_DATE=datum_g,        
          PAYMENT_DEADLINE=datum_d, POINTS=bodovi)
        c = db.cursor()
        c.execute(SQL, **args)
Same thing.

Everything works If I use python string substituion, like this sql:
SQL = """insert into D.D_NOTIFY values (%s,'%s','%s','%s','%s','%s', \
        to_date('%s','DD.MM.YY'),to_date('%s','DD.MM.YY'),'%s')""" % fields

Any ideas?


-- 
damjan


From junkmail2 at solumslekt.org  Sun May  1 14:13:43 2005
From: junkmail2 at solumslekt.org (Leif Biberg Kristensen)
Date: Sun, 01 May 2005 20:13:43 +0200
Subject: My personal candidate for QOTW (was: Python interpreter in
	Basic or a Python-2-Basic translator.)
References: <1114953507.031865.244920@g14g2000cwa.googlegroups.com>
	<q1efk2-gd7.ln1@lairds.us>
Message-ID: <3dkkinF6pp8cqU1@individual.net>

Cameron Laird skrev:

> In article <1114953507.031865.244920 at g14g2000cwa.googlegroups.com>,
> Engineer <pcolsen at comcast.net> wrote:
> .
> .
> .
>>The security 'droids have decided that since the MS Office Suite is a
>>"standard" application then software written in MS Office VBA must be
>>"safe."  Any other development environments (such as Java, Perl,
> .
> .
> .

This is clear evidence supporting the theory that being in charge of
security and being able to think have no significant correlation.

And, yes: +1 QOTW from me, too.
-- 
Leif Biberg Kristensen


From bram at geenspam.sara.nl  Wed May 25 12:15:15 2005
From: bram at geenspam.sara.nl (Bram Stolk)
Date: Wed, 25 May 2005 18:15:15 +0200
Subject: IRIX MipsPro compiler chokes on Python.h
In-Reply-To: <mailman.88.1117026575.18027.python-list@python.org>
References: <1116933601.457261@blaat.sara.nl>
	<mailman.88.1117026575.18027.python-list@python.org>
Message-ID: <1117037715.368161@blaat.sara.nl>

Andrew MacIntyre wrote:

> My suspicion would be directed to a #define that is incorrect, as the
> snippet above suggests that select() appears in two system headers
> (/usr/include/sys/time.h & /usr/include/unistd.h).

thanks for the info.
I need to undef the following from my pyconfig.h to make it pass the
compiler:

HAVE_SYS_TIME_H
TIME_WITH_SYS_TIME

   Bram


> That is ./configure got something wrong and may need to be modified for
> your platform to sort this out properly, but modifying pyconfig.h to
> correct the incorrect definitions should get you out of trouble.
> 
> -------------------------------------------------------------------------
> Andrew I MacIntyre                     "These thoughts are mine alone..."
> E-mail: andymac at bullseye.apana.org.au  (pref) | Snail: PO Box 370
>        andymac at pcug.org.au             (alt) |        Belconnen ACT 2616
> Web:    http://www.andymac.org/               |        Australia


From csgcsg39 at hotmail.com  Tue May 24 07:23:49 2005
From: csgcsg39 at hotmail.com (C Gillespie)
Date: Tue, 24 May 2005 12:23:49 +0100
Subject: staticmethod and classmethod
Message-ID: <d6v2s5$blp$1@ucsnew1.ncl.ac.uk>

Hi,

Does anyone know of any examples on how (& where) to use staticmethods and
classmethods?

Thanks

Colin




From greg at invalid.invalid  Wed May 18 15:54:08 2005
From: greg at invalid.invalid (Greg Krohn)
Date: Wed, 18 May 2005 19:54:08 GMT
Subject: wxpython and wxtextctrl
In-Reply-To: <428b8033$0$1342$626a14ce@news.free.fr>
References: <428b8033$0$1342$626a14ce@news.free.fr>
Message-ID: <A3Nie.2586$X92.1894@newsread2.news.pas.earthlink.net>

Nicolas Pourcelot wrote:
> Hello,
> my script worked well until today : when I tried to launch it, I got the 
> following :
> 
>     frame = MyFrame(None,-1,"Geometrie",size=wx.Size(600,400))
>   File "/home/nico/Desktop/wxGeometrie/version 0.73/geometrie.py", line 
> 74, in __init__
>     self.commande.Bind(wx.EVT_CHAR, self.EvtChar)
> AttributeError: wxTextCtrl instance has no attribute 'Bind'
> 
> (self.commande is a wxTextCtrl instance)
> I don't understand : why did wxTextCtrl lost its Bind attribute ??
> As there's not so much changes on my computer since yesterday, I suppose 
> this is due to Boa package installation on my Ubuntu Hoary ?
> Does Boa installation changes wxpython version ?
> Is wxTextCtrl attribute .Bind() obsolete ??
> 
> Thanks,
> Nicolas

control.Bind is relativly new. The wxTextCtrl notation (vs wx.TextCtrl) is
the old way (but it IS kept around for backwards compatablility). My guess
is that your code is for for a newer version of wxPython than what you
actually have.

Try printing the version from in your code:

import wxPyhon
print wxPython.__version__
self.commande.Bind(wx.EVT_CHAR, self.EvtChar)

-greg



From bill.pursell at gmail.com  Thu May 12 14:45:33 2005
From: bill.pursell at gmail.com (bill)
Date: 12 May 2005 11:45:33 -0700
Subject: bash like expansion
Message-ID: <1115923533.263490.67970@g44g2000cwa.googlegroups.com>

Consider the following:

import os, commands
os.environ['QWE']="string with foo"
a = '$QWE  ${QWE/foo/baz}'
b = commands.getoutput('echo ' + a)


This does what I want, which is to expand
a according to the standard bash expansion rules
(so b now references "string with foo string with baz"),
but it doesn't feel right.

Is there a more pythonic way to interpret strings according
to shell rules for word expansion?  Relying on commands
feels like a kludge, and shlex is way too much work for this
(not to mention that it doesn't really address the issue).



From onfrek at yahoo.com  Mon May 30 10:51:54 2005
From: onfrek at yahoo.com (Michael Onfrek)
Date: 30 May 2005 07:51:54 -0700
Subject: How to restrict lenght of entry widget to certain number of
	character
In-Reply-To: <M1Eme.105300$nZ7.6267010@phobos.telenet-ops.be>
References: <1117396149.334908.238580@g14g2000cwa.googlegroups.com>
	<M1Eme.105300$nZ7.6267010@phobos.telenet-ops.be>
Message-ID: <1117464714.334190.265220@g49g2000cwa.googlegroups.com>

I'm using tkinter



From cotyspend at yahoo.com  Sun May 29 00:42:46 2005
From: cotyspend at yahoo.com (nephish)
Date: 28 May 2005 21:42:46 -0700
Subject: How do i read just the last line of a text file?
Message-ID: <1117341766.166081.132240@o13g2000cwo.googlegroups.com>

Hey there.
i want to set a variable to represent the last line of a text file
how do i do that?
or even better, how do i create a list of the lines of a text file?



From rkern at ucsd.edu  Tue May 10 06:21:36 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Tue, 10 May 2005 03:21:36 -0700
Subject: why this happend using model random?
In-Reply-To: <d5q0ro$5lb$1@news.yaako.com>
References: <d5q0ro$5lb$1@news.yaako.com>
Message-ID: <d5q1hm$4um$1@sea.gmane.org>

flyaflya wrote:
> from random import *
> 
> col = [0 for i in range(10)]
> a = [col for  i in range(10)]

This is the problem. The list "a" now has ten references to the same 
object "col". They are not copied.

> seed()
> for i  in range(10):
>      for j in  range(10):
>          a[i][j] = randint(0, 100)

So every time you index into "a[i][j]" you are always getting "col[j]".

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From tim.golden at viacom-outdoor.co.uk  Thu May 12 04:15:16 2005
From: tim.golden at viacom-outdoor.co.uk (Tim Golden)
Date: Thu, 12 May 2005 09:15:16 +0100
Subject: windows directories for curr user
Message-ID: <9A28C052FF32734DACB0A288A3533991EBB805@vogbs009.gb.vo.local>

[flamesrock]
| 
| Thanks for the code Tom.
| 
| Unforunately, I get the following error message when trying to import
| win32com in idle:
| 
| >>> from win32com.shell import shell, shellcon
| 
| Traceback (most recent call last):
|   File "<pyshell#20>", line 1, in -toplevel-
|     from win32com.shell import shell, shellcon
| ImportError: No module named win32com.shell

I should have said that you need the pywin32 libraries: http://pywin32.sf.net

I just automatically install them on any win32 python system I
get my hands on. You can achieve the same effect by using the
ActiveState Python distribution.

TJG

________________________________________________________________________
This e-mail has been scanned for all viruses by Star. The
service is powered by MessageLabs. For more information on a proactive
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From megahrtz at gte.net  Thu May  5 19:28:02 2005
From: megahrtz at gte.net (Alex Nordhus)
Date: Thu, 05 May 2005 18:28:02 -0500
Subject: F.readline
Message-ID: <000001c551ca$15ddd3b0$6400a8c0@grondor>


Having some trouble with f.readline and python. Specifically looking for
the command to tell it to go and read a specific line.




Alex Nordhus
Keystroke clipboard Copy and Paste !
http://www.pasteaway.com



From miki.tebeka at zoran.com  Tue May  3 02:18:28 2005
From: miki.tebeka at zoran.com (Miki Tebeka)
Date: Tue, 3 May 2005 09:18:28 +0300
Subject: Reading output from standard out
In-Reply-To: <BF0BED91AA17F448A3A927857E11FC6401706433@thor.pcigeomatics.com>
References: <BF0BED91AA17F448A3A927857E11FC6401706433@thor.pcigeomatics.com>
Message-ID: <20050503061828.GJ2296@zoran.com>

Hello Thierry,

>    Let's say I have a python program which prints output to standard out,
>    let's call it HelloApp.  How do I capture these outputs from the
>    python GUI tkinter? For example, I want to call HelloApp from my GUI
>    program and I want to send the output live to a tkinter text area.
See os.popen or the subprocess module.

HTH.
--
------------------------------------------------------------------------
Miki Tebeka <miki.tebeka at zoran.com>
http://tebeka.bizhat.com
The only difference between children and adults is the price of the toys
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From __peter__ at web.de  Mon May 30 15:27:26 2005
From: __peter__ at web.de (Peter Otten)
Date: Mon, 30 May 2005 21:27:26 +0200
Subject: finding indices in a sequence of parentheses
References: <u_KdneJ4tt9QuwffRVn-tg@comcast.com>
	<429a382d$0$15392$626a14ce@news.free.fr>
	<d7ebor$sij$00$1@news.t-online.com>
	<429b6082$0$30053$626a14ce@news.free.fr>
Message-ID: <d7fpci$d89$04$1@news.t-online.com>

tiissa wrote:

> Not tested but confident is an oxymoron for mathemtaticians.

I think no amount of testing will give these strange people confidence.
"Proof" is the magic word here.

Peter



From fredrik at pythonware.com  Sat May 14 10:17:29 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Sat, 14 May 2005 16:17:29 +0200
Subject: Build-in or user-defined exceptions?
References: <87mzqykl1x.fsf@wilson.rwth-aachen.de>
Message-ID: <d6519m$i2u$1@sea.gmane.org>

Torsten Bronger wrote:

> Is it considered good style to raise build-in exceptions whereever
> one thinks it's appropriate?

yes.

> Is the definition of module exceptions derived from "IOError", "TypeError"
> etc. a good idea?

sure (when absolutely necessary).

> Is there some sort of style guide for recommended exceptions design in
> Python?

just use your intuition.

</F>





From max2 at fisso.casa  Sat May  7 14:52:06 2005
From: max2 at fisso.casa (max(01)*)
Date: Sat, 07 May 2005 18:52:06 GMT
Subject: python and glut
In-Reply-To: <1115322846.254200.55370@f14g2000cwb.googlegroups.com>
References: <kp7ee.1331058$35.49670814@news4.tin.it>
	<1115236689.318521.111420@z14g2000cwz.googlegroups.com>
	<bmsee.1336210$35.49849772@news4.tin.it>
	<1115322846.254200.55370@f14g2000cwb.googlegroups.com>
Message-ID: <q78fe.869449$b5.38477059@news3.tin.it>

Lonnie Princehouse wrote:
> Welcome to the exciting world of trying to make graphics work on Linux
> =)
> 
> DRI is direct rendering.
[...]
> DRI not working could also be a permissions issue; check to see if it
> works as root.

that's it! :-)

now, how can i make it work as "joe user"?

bye

max



From removethis.kartic.krishnamurthy at gmail.com  Mon May 23 16:41:25 2005
From: removethis.kartic.krishnamurthy at gmail.com (Kartic)
Date: Mon, 23 May 2005 20:41:25 GMT
Subject: Access lotus notes using Python
In-Reply-To: <prk9m2-2gi.ln1@nb2.stroeder.com>
References: <lWike.155$NV3.3324@news1.nokia.com>
	<UEjke.447$2u1.383@newssvr19.news.prodigy.com>
	<prk9m2-2gi.ln1@nb2.stroeder.com>
Message-ID: <Vdrke.1084$uu.291@newssvr33.news.prodigy.com>

The Great 'Michael Str?der' uttered these words on 5/23/2005 2:43 PM:
> Kartic wrote:
> 
>>The Great 'Sateesh' uttered these words on 5/23/2005 7:14 AM:
>>
>>
>>>Is it possible to access Lotus notes using Python? Can anyone provide me
>>>some pointers?
>>
>>Yes, you can... You need the win32all distribution installed and you can
>>access Notes using the COM interface (win32com.client).
> 
> 
> There could be even more cross-platform programming options depending
> what "access Lotus Notes" really means for the original poster.
> 
> Depending on configuration a Domino server might have several Internet
> protocol services for accessing Notes data (POP3, IMAP, LDAP, etc.).
> 
> Ciao, Michael.


So I guess it upto the Sateesh to tell whether he needs more information 
or not.


From ivanlan at pauahtun.org  Wed May 18 10:46:46 2005
From: ivanlan at pauahtun.org (Ivan Van Laningham)
Date: Wed, 18 May 2005 08:46:46 -0600
Subject: Python forum
References: <mailman.84.1116320178.8733.python-list@python.org>	<pan.2005.05.17.10.38.09.537008@gmx.at>	<428B1803.80509@softhome.net>
	<17035.17855.129397.462296@montanaro.dyndns.org>
	<d6fh1f$cqo$1@sea.gmane.org>
Message-ID: <428B5556.7C4015A6@pauahtun.org>

Hi All--

Robert Kern wrote:
> 
> Skip Montanaro wrote:
> 
> > (Is "forums" okay as a plural of "forum" or should I have used "fora"?)
> 
> dict.org says _forums_. I used _fora_, but I'm silly.
> 

It also says "appendixes" and "indexes" are OK.  Yahoos.

Metta,
Ivan
----------------------------------------------
Ivan Van Laningham
God N Locomotive Works
http://www.andi-holmes.com/
http://www.foretec.com/python/workshops/1998-11/proceedings.html
Army Signal Corps:  Cu Chi, Class of '70
Author:  Teach Yourself Python in 24 Hours


From usenet at gungfu.de  Mon May 16 10:50:34 2005
From: usenet at gungfu.de (=?iso-8859-1?q?Steffen_Gl=FCckselig?=)
Date: 16 May 2005 07:50:34 -0700
Subject: Python Polymorphism
In-Reply-To: <nROge.89215$Kb6.5425239@phobos.telenet-ops.be>
References: <mailman.495.1115928047.29826.python-list@python.org>
	<nROge.89215$Kb6.5425239@phobos.telenet-ops.be>
Message-ID: <1116255034.330555.253650@g43g2000cwa.googlegroups.com>


> Ah, that's not polymorphism; it's method overloading. And AFAIK it is

> not possible in Python.
It IS polymorphism. Not the one one is usually referring to, but it is.
Overloading is an 'ad hoc'-polymorphism.


regards
Steffen



From greg at cosc.canterbury.ac.nz  Wed May 25 21:39:40 2005
From: greg at cosc.canterbury.ac.nz (Greg Ewing)
Date: Thu, 26 May 2005 13:39:40 +1200
Subject: Q: "...Learning with Python" ...a property that addition and
	multiplication have...
In-Reply-To: <1117067025.233387.323910@z14g2000cwz.googlegroups.com>
References: <1117067025.233387.323910@z14g2000cwz.googlegroups.com>
Message-ID: <3fknnaF8b5rgU1@individual.net>

jeffbernstein at yahoo.com wrote:
> "Can you think of a property that addition and
> multiplication have that string concatenation and repetition do not?"

Existence of inverses?

E.g. the additive inverse of 3 is -3, but there are
no "concatenative inverses" of strings.

(BTW, I would consider this more about thinking like a
mathematician than a computer scientist!)

-- 
Greg Ewing, Computer Science Dept,
University of Canterbury,	
Christchurch, New Zealand
http://www.cosc.canterbury.ac.nz/~greg


From mgayoub at gmail.com  Sun May 22 22:45:16 2005
From: mgayoub at gmail.com (mgayoub at gmail.com)
Date: 22 May 2005 19:45:16 -0700
Subject: GREAT VIDEO! >>
	http://www.tbn.org/films/videos/To_Hell_And_Back.ram << Just
	click link to view the free video.......... May 22, 2005 7:37:11 pm
In-Reply-To: <1116804994.655007.278080@g49g2000cwa.googlegroups.com>
References: <1116804994.655007.278080@g49g2000cwa.googlegroups.com>
Message-ID: <1116816316.092682.131790@g44g2000cwa.googlegroups.com>

No.



From magicmas at spymac.com  Fri May 20 10:05:29 2005
From: magicmas at spymac.com (cheng)
Date: 20 May 2005 07:05:29 -0700
Subject: a re problem
Message-ID: <1116597929.339491.54870@g49g2000cwa.googlegroups.com>

>>> p.sub('','a\nbc')
'abc'
>>> p.sub('','%s') % "a\nbc"
'a\nbc'

is it anyone got some idea why it happen?



From fredrik at pythonware.com  Mon May  9 15:07:21 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Mon, 9 May 2005 21:07:21 +0200
Subject: Question about extending the interperter
References: <1115654593.479760.52610@o13g2000cwo.googlegroups.com>
Message-ID: <d5obvh$e33$1@sea.gmane.org>

"Eli" wrote:

> I've followed the Python docs about extending the Python interperter
> and created an extension library.
> I've added my functions like this:
>
> static PyMethodDef pmylib_methods[] = {
> {"foo", pmylib_foo, METH_VARARGS, "foo() doc string"},
> ...
> }
> static PyObject *pmylib_foo(PyObject *self, PyObject *args)
> {
> ...
> char *p;
> if (!PyArg_ParseTuple(args, "s", &p))
> ...
> }
>
> And that's works fine.
> The problem for me is that the pointer "p" in the last function points
> to the arguments:
> If a user caller foo("123") - p points to '123'.

foo("123") means "call the callable identifed by the expression 'foo' with
foo with the string '123'", so that's just what should happen.

> What I need is to point it to the whole string received - 'foo
> ("123")'.

received by whom?  if you call a function with an argument, the function
receives the argument.  the expression used to locate the callable (in this
case, the function name) is not part of the call.

> Is there a way I can do this?

no (at least not given how you've described your problem).

</F>





From querypk at gmail.com  Tue May 31 16:14:09 2005
From: querypk at gmail.com (querypk at gmail.com)
Date: 31 May 2005 13:14:09 -0700
Subject: convert a string to tuple
Message-ID: <1117570449.887422.225670@g43g2000cwa.googlegroups.com>

how do I convert 
b is a string  b = '(1,2,3,4)' to b = (1,2,3,4)



From michaels at rd.bbc.co.uk  Fri May 20 11:24:21 2005
From: michaels at rd.bbc.co.uk (Michael Sparks)
Date: Fri, 20 May 2005 16:24:21 +0100
Subject: Twisted an several CPUs
References: <mailman.219.1116524003.8733.python-list@python.org>
	<7xhdgy6a0o.fsf@ruckus.brouhaha.com>
Message-ID: <d6l0df$1i4$1@nntp0.reith.bbc.co.uk>

Paul Rubin wrote:

> Jp Calderone <exarkun at divmod.com> writes:
>>   Distributing load across multiple machines scales better than
>> distributing it over multiple CPUs in a single machine.  If you have
>> serious scalability requirements, SMP is a minor step in the wrong
>> direction (unless you're talking about something like 128-way SMP on
>> a supercomputer :)
> 
> See PoSH:
> 
>   http://poshmodule.sourceforge.net/
> 
> The performance gain from multiple CPU's and shared memory is quite
> real. I've been wanting for quite a long time to hack up a web server
> that uses this stuff.

OOooh that looks interesting - thanks for posting that :)


Michael.
-- 
Michael.Sparks at rd.bbc.co.uk    
British Broadcasting Corporation, Research and Development
Kingswood Warren, Surrey KT20 6NP

This message (and any attachments) may contain personal views
which are not the views of the BBC unless specifically stated.




From austynjay at yahoo.com  Mon May 23 12:12:31 2005
From: austynjay at yahoo.com (Austyn Bontrager)
Date: Mon, 23 May 2005 16:12:31 GMT
Subject: SQL Query via python
In-Reply-To: <mailman.278.1116647826.8733.python-list@python.org>
References: <mailman.278.1116647826.8733.python-list@python.org>
Message-ID: <Phnke.1718$oT1.392@newsread1.news.pas.earthlink.net>

How about:

cursor.execute("""
	SELECT name, month, day ,category, city FROM bday
	WHERE %(col_name)s = %%s
	""" % dict(col_name=arg1),
	(arg2)
	)

The "%(col_name)s" will be replaced by normal Python string 
substitution, while the "%%s" will be quoted by the db module.

Watch out for SQL injection in arg1, though! Maybe check beforehand that 
it is a string containing only word characters...

Jeff Elkins wrote:
> I'm attempting to pass an SQL query via the console:
> 
> $ ./getbd month 05
> 
> The arguments get seem to passed correctly (via print statements) and then:
> 
>     cursor.execute ("""
>                      SELECT name, month, day ,category, city FROM bday
>                      WHERE %s = %s
>                    """,(arg1,arg2))
> 
> No results. However, if I hardcode the WHERE argument with a field name:
> 
>  cursor.execute ("""
>                      SELECT name, month, day ,category, city FROM bday
>                      WHERE month = %s
>                    """,(arg2))
> 
> It works.
> 
> How can I code the left side of the WHERE clause so I can pass an arbitrary 
> field name to search on?
> 
> 
> Thanks,
> 
> Jeff Elkins
> 
> 


From brian at mirror.org  Fri May 20 18:25:50 2005
From: brian at mirror.org (brian at mirror.org)
Date: 20 May 2005 15:25:50 -0700
Subject: circular imports
In-Reply-To: <1116599898.308012.71220@g47g2000cwa.googlegroups.com>
References: <1116599898.308012.71220@g47g2000cwa.googlegroups.com>
Message-ID: <1116627950.489983.270860@g49g2000cwa.googlegroups.com>


> One feature I'm trying to fix is the use of:
> # how things are now
> sys.path.append('/general/path/aaa/bbb') # lots of lines like this to
> specific dirs
> import foo
>

I had a need to keep an python source for an application in separate
directories, but not as packages.  Rather that manually adjust sys.path
in every single module, I tried to centralize everything:

- config.py in main directory modified sys.path once, adding all the
directories I would need to sys.path.

- sitecustomize.py in every other directory, which did this:
    try:
        import config
    except ImportError:
        sys.path.append('/to/main/dir')
        import config
    (typed from memory, so hopefully no errors)

Hope that helps.
Brian.



From magicmas at spymac.com  Sun May 29 03:39:10 2005
From: magicmas at spymac.com (cheng)
Date: 29 May 2005 00:39:10 -0700
Subject: need help of RE
Message-ID: <1117352350.179209.206930@z14g2000cwz.googlegroups.com>

hi all
a string like

"(word1 & (Word2|woRd3))"

how can i use the re to split it to

['word1', 'word2', 'word3']



From dd at ss.it  Tue May 24 18:18:17 2005
From: dd at ss.it (Giox)
Date: Tue, 24 May 2005 15:18:17 -0700
Subject: interesting Link
Message-ID: <d7d3o3$919$4841@ftp-news.csita.unige.it>

Hello everybody, I found on the web an interesting way to gain some money:
it's netbux, that allows you to learn something while you search the web through google or altaista.
I earned 40$ in a month, not a lot, but I have simply to use Google to do My searches.
If you want try it subscribe at:

http://netbux.org/?r=67933






From dotpyFE at gmail.com  Sun May 15 20:31:00 2005
From: dotpyFE at gmail.com (Lucas Raab)
Date: Mon, 16 May 2005 00:31:00 GMT
Subject: The world is really unstable these days......
In-Reply-To: <49B3F3B1.646A6FE6@elsewhere.com>
References: <49B3F3B1.646A6FE6@elsewhere.com>
Message-ID: <8RRhe.2094$M36.91@newsread1.news.atl.earthlink.net>

<snip>

> Don't change eventually while you're climbing through a light 
> pumpkin.  If the open clouds can play wrongly, the lean elbow may 
> call more bedrooms.  He can help believably, unless Wail teases 
> farmers throughout Wednesday's enigma.  She wants to join good 
> tyrants about Allan's sign.  Occasionally Marion will love the 
> pool, and if Mohammar bimonthly excuses it too, the code will 
> seek inside the elder college.  
> 
> Yesterday, cats recommend among strong doorways, unless they're 
> distant.  Don't try to attack the floors fully, order them amazingly.  
> 
> Hardly any tags will be strange smart boats.  Let's creep around the 
> polite rooms, but don't sow the handsome figs.  
> 
> 
> 

Y'know, I really do love these random word spam messages. They're quite 
entertaining to read.

-- 
--------------------------
Lucas Raab
lvraab"@"earthlink.net
dotpyFE"@"gmail.com
AIM:	Phoenix11890
MSN:	dotpyfe "@" gmail.com
IRC:	lvraab
ICQ:	324767918
Yahoo:	Phoenix11890


From bulliver at badcomputer.org  Mon May  2 18:48:37 2005
From: bulliver at badcomputer.org (darren kirby)
Date: Mon, 2 May 2005 15:48:37 -0700
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <3dnco7F6sgmkrU1@individual.net>
References: <d4u60o$akh$1@news2.netvision.net.il>
	<mailman.39.1115056020.6583.python-list@python.org>
	<3dnco7F6sgmkrU1@individual.net>
Message-ID: <200505021548.42475.bulliver@badcomputer.org>

quoth the Reinhold Birkenfeld:

>
> Somehow writing '[a-z]{1}' is strange...
>
> Reinhold

>>> t = /text of page source.../
>>> re.findall('[a-z][A-Z]{3}[a-z][A-Z]{3}[a-z]', t)

Sorry dude! When it comes to logic puzzles I am easily frustrated, and that 
leads to unclear thinking...

-d
-- 
darren kirby :: Part of the problem since 1976 :: http://badcomputer.org
"...the number of UNIX installations has grown to 10, with more expected..."
- Dennis Ritchie and Ken Thompson, June 1972
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From skip at pobox.com  Wed May 11 08:41:07 2005
From: skip at pobox.com (Skip Montanaro)
Date: Wed, 11 May 2005 07:41:07 -0500
Subject: Problems with csv module
In-Reply-To: <a4r381p3s5uhud58tvd2m2nod1ebmo48u0@4ax.com>
References: <d5sngn$l4$03$1@news.t-online.com>
	<mailman.338.1115809896.29826.python-list@python.org>
	<d5spph$ktm$01$1@news.t-online.com>
	<a4r381p3s5uhud58tvd2m2nod1ebmo48u0@4ax.com>
Message-ID: <17025.64867.182750.7036@montanaro.dyndns.org>


    >> You mean that csv.reader can't work with unicode as the delimiter
    >> parameter?

    Richie> Exactly....

    Richie> "Note: This version of the csv module doesn't support Unicode
    Richie> input....

    Richie> That note is still there in the current development docs, so it
    Richie> looks like it hasn't yet been fixed.

I can confirm this.  While the note as written focused on csv files encoded
using non-ASCII codecs, it also holds true for the API.  Manipulating
Unicode from C isn't as simple as simple as from Python and none of those of
us with our fingerprints on the csv module code had much/any Unicode
experience.

Skip



From kay.schluehr at gmx.net  Wed May 18 18:22:51 2005
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: 18 May 2005 15:22:51 -0700
Subject: Is Python suitable for a huge, enterprise size app?
In-Reply-To: <1116450537.626601.251990@g49g2000cwa.googlegroups.com>
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>
	<jmbsl2-opn.ln1@lairds.us>
	<1116442276.918194.194110@g44g2000cwa.googlegroups.com>
	<mailman.163.1116443300.8733.python-list@python.org>
	<1116450537.626601.251990@g49g2000cwa.googlegroups.com>
Message-ID: <1116454971.543476.28000@g14g2000cwa.googlegroups.com>

George Sakkis wrote:

> Personally, although I find nothing comes close to the clarity and
> flexibility that python offers, in this case I would go with java, if
> for nothing else, to be on the safe side.

"No manager got ever fired for buying IBM"

> Think about it: if the
> project fails (and that's quite likely for huge projects, not dark
> humour) and you've done it in python, everyone will blame python and
> you who chose it; java OTOH belongs in the realm of "standard
business
> practices", so in a way "it's ok" to screw up, you did what everybody
> else does. Yet another failed java enterprise project, nothing to see
> here.

Hi George, You probably know the tale about Achilles and the turtle?
Where do You think Achilles would be located in the race against the
turtle if Zeno would have convinced him that motion is impossible? I
always thought that we Germans were hopeless pessimists ;)

It's a very funny logical loop inside this kind of arguments: don't use
great Python for grand multimillion $ projects because if You fail
everyone trashes cute Python and claims that it is not reliable for
grand projects and therefore will not be used for those. 

Ciao,
Kay



From volker_grabsch at v.notjusthosting.com  Sat May 14 14:49:07 2005
From: volker_grabsch at v.notjusthosting.com (Volker Grabsch)
Date: Sat, 14 May 2005 20:49:07 +0200
Subject: Multiple "cmp"s chained one after another
References: <d64io9$s6o$05$1@news.t-online.com>
	<d64pgi$tc8$1@news2.zwoll1.ov.home.nl>
Message-ID: <d65h73$fgr$02$2@news.t-online.com>

vincent wehren wrote:
> 
> If you don't care about the year, why not just "normalize" the year
> to all be the same using the replace method of the date instance?

That's a very bad idea. In my example, this would work, but in "reality"
I don't sort datetime objects, of course! (Is there any real application
where you want to do that?)

Instead, I'm sorting "Person" objects using a "birthday" attribute.
Since I use these Person objects also in other places, they should never
be modified without just to be sorted. In general, the number side effects
should always be minimized.

> datesNorm = [obj.replace(year=1900) for obj in (dates)]
> datesNorm.sort()

This code would go bad especially in my situation, where my "Person"
objects are SQLObjects, thus the "normalisation" would be written into
the database. Okay, one could use transactions and rollback", but I
think, my point is clear now.

Nevertheless, I think you idea is very interesting. Is there any "real"
application where normalizing just for sorting would be reasonable?


Greets,

-- 
Volker Grabsch
---<<(())>>---
\frac{\left|\vartheta_0\times\{\ell,\kappa\in\Re\}\right|}{\sqrt
[G]{-\Gamma(\alpha)\cdot\mathcal{B}^{\left[\oint\!c_\hbar\right]}}}


From ashleyd at mail1.knighttrans.com  Mon May  2 20:19:08 2005
From: ashleyd at mail1.knighttrans.com (ashleyd)
Date: Mon,  2 May 2005 20:19:08 
Subject: automated response
Message-ID: <10505022019.AA24831285@mail1.knighttrans.com>

I will be out of the office starting Wednesday 04/13 and will return Tuesday 04/26.
If you need anything, please contact Scott Carver at 662-890-0901 ext 5512.
He can direct you to the right person.

Thanks.

Ashley L. Doak
Knight Transportation



From koppalaby at gmail.com  Tue May 17 01:36:18 2005
From: koppalaby at gmail.com (ab)
Date: 16 May 2005 22:36:18 -0700
Subject: Interaction between TclTk editor with Python code
Message-ID: <1116308178.943049.168270@g44g2000cwa.googlegroups.com>

Hi,

I have an editor(front end) that is written in Tcl/Tk.
It has a menu bar, menu buttons, edit boxes, listboxes & comboboxes.
I am invoking this editor from an application that is written in
Python.
all the necessary processing is done in Python and displaying is done
by the Tcl/Tk code.

Now if I make some changes in the GUI, say I change some value in the
editbox or set some value in the list box and click on save in the GUI,
how can I read the changed values from Python?
I mean, how can I get the value changed in the GUI into some Python
variable?

Thanks,
Ab.



From olaamigoquepasa at hotmail.com  Tue May 17 22:48:34 2005
From: olaamigoquepasa at hotmail.com (hawkesed)
Date: 17 May 2005 19:48:34 -0700
Subject: setting up scipy in windows
Message-ID: <1116384514.608584.9180@g49g2000cwa.googlegroups.com>

Hi All,
  has anyone out there recently set up scipy on Windows? Cause I am
trying to do so know and I am not having much luck. I have ActiveState
and Plone. When I try to import scipy in ActiveState it says
>>> import scipy
Traceback (most recent call last):
  File "<interactive input>", line 1, in ?
ImportError: No module named scipy
>>> from scipy import *
Traceback (most recent call last):
  File "<interactive input>", line 1, in ?
ImportError: No module named scipy
When I try to the same in Plone it crashes. I have the latest self
install executable from SCIPY. I didn't compile the source.
Scipy looks like just the thing I want, if anyone has got it running on
a Windows box I would like to hear how you did it. Thanks all have a
great day.
Ed Hawkes



From gdamjan at gmail.com  Thu May 12 12:02:08 2005
From: gdamjan at gmail.com (Damjan)
Date: Thu, 12 May 2005 18:02:08 +0200
Subject: a cx_Oracle ORA-01036 problem
References: <427a2b39_2@x-privat.org> <IjNee.33$r04.32@news.oracle.com>
Message-ID: <42837ec5_2@x-privat.org>

>> SQL = """insert into D.D_NOTIFY values (:CARDREF, :BANKKEY, :OK1, :OK2 \
>>         :DEBTEUR, :DEBTDEN, to_date(:INVOICE_DATE,'DD.MM.YY'),
>>         to_date(:PAYMENT_DEADLINE,'DD.MM.YY'), :POINTS)"""
>> 

> Try using a variable name other than "id" for the CARDREF variable... say
> "card_id".  id is a built in function name; I suspect your problem may be
> that you are assiging that function to the variable rather than your
> intended value...

I changed it to 'cardref' but I'm still getting the same error.


-- 
damjan


From bokr at oz.net  Mon May  2 22:26:32 2005
From: bokr at oz.net (Bengt Richter)
Date: Tue, 03 May 2005 02:26:32 GMT
Subject: cgi "print statement" in multithreaded enviroment?
References: <mailman.59.1115079020.6583.python-list@python.org>
	<4276c282$0$153$e4fe514c@news.xs4all.nl>
	<mailman.60.1115079903.6583.python-list@python.org>
Message-ID: <4276daca.521529900@news.oz.net>

On Mon, 02 May 2005 20:24:02 -0400, vegetax <vegeta.z at gmail.com> wrote:

>Irmen de Jong wrote:
>
>> vegetax wrote:
>>> How can i use cgi'like print statement in a multitreaded web framework?
>>> each thread has its own Servlet instance with request/response objects,
>>> sys.stdout = self.response(which is a file like object) wont work because
>>> all threads will set the same file object and it will be a concurrence
>>> mess.
>>> 
>>> I am out of ideas here,so any hacks welcome =)
>>> 
>> 
>> instead of:
>> 
>>     print "<html>.....</html>
>> 
>> do:
>> 
>>     print >>self.response, "<html>....</html>"
>> 
>> 
>> --Irmen
>
>But i want to use "print" as a commodity feature, print >>
>self.response,'html..'  is longer to type than
>self.response.write('html..')
>
>The only clear way i am thinking right now is to write a preprocessor ,like
>quixote ptl,but thats sloww
>
Maybe assign an object to sys.stdout that has write etc methods that check
what thread is calling and use self.response things that you assign to
a property of that sys.stdout object instead of directly to sys.stdout.

I.e., something like

    sys.stdout = my_stdout_dispatcher
    ...
    # property out_channels stores self.response with thread id:
    sys.stdout.out_channels = self.response(which is a file like object)
    ...

    # print => sys.stdout.write => my_stdout_dispatcher.write('from some thread')
    # which atomically looks up right self.response
    print 'from some thread'

You may need some lock stuff to do this properly
(to make self.response lookup info access effectively atomic),
but that's a general idea. I don't know what other thread interaction issues
you may have with the state of possibly mutable data being printed.

This is just an idea for an approach. I may not be understanding your problem at all ;-)

Regards,
Bengt Richter


From "myname" at example.invalid  Sun May 29 05:57:52 2005
From: "myname" at example.invalid (VK)
Date: Sun, 29 May 2005 11:57:52 +0200
Subject: Getting value of radiobutton trouble
In-Reply-To: <um5me.3501$4N2.2020@newssvr30.news.prodigy.com>
References: <3fs17rF9b8edU1@news.dfncis.de>
	<%35me.194$Dq7.159@newssvr11.news.prodigy.com>
	<3fs5ogF9e2e7U1@news.dfncis.de>
	<um5me.3501$4N2.2020@newssvr30.news.prodigy.com>
Message-ID: <3fti1pF9h98dU1@news.dfncis.de>

Philippe C. Martin wrote:
> PS: Since your starting with TKinter, and although I do not know what your
> goal is, I suggest you take a look at wxPython: it is _wonderfull_ ! (no
> offence to TCL/TK)
> 
> Regards,
> 
> Philippe
> 
> 
> 
> 
> 
> 
> VK wrote:
> 
> 
>>Philippe C. Martin wrote:
>>
>>>Hi,
>>>
>>>I think your second call to Tk() does it: this works although the look is
>>>different:
>>>
>>>
>>>from Tkinter import *
>>>class GetVariant:
>>>     def __init__(self):
>>>         self.root = Tk()
>>>         self.mainframe = Frame(self.root,bg="yellow")
>>>         self.mainframe.pack(fill=BOTH,expand=1)
>>>
>>>         self.firstframe = Frame(self.mainframe,bg="red")
>>>         self.firstframe.pack(side=BOTTOM,expand=1)
>>>
>>>         global v
>>>         v = StringVar()
>>>         self.radiobutton = Radiobutton(self.firstframe,text= "Variant
>>>1", variable=v, value="Variant 1")
>>>         self.radiobutton.pack(side=TOP,anchor=W)
>>>         self.radiobutton.select()
>>>         self.radiobutton = Radiobutton(self.firstframe,text= "Variant
>>>2", variable=v, value="Variant 2")
>>>         self.radiobutton.pack(side=TOP,anchor=W)
>>>         self.radiobutton = Radiobutton(self.firstframe,text= "Variant
>>>3", variable=v, value="Variant 3")
>>>         self.radiobutton.pack(side=TOP,anchor=W)
>>>
>>>
>>>
>>>         self.secondframe = Frame(self.mainframe,bg="blue")
>>>         self.secondframe.pack()
>>>         self.var = Button(self.secondframe,text="What
>>>Variant",command=self.call)
>>>         self.var.pack(expand=1,side=BOTTOM)
>>>
>>>
>>>
>>>     def call(self):
>>>         self.variant = v.get()
>>>         print 'Input => "%s"' % self.variant
>>>
>>>class OneButton:
>>>         def __init__(self):
>>>             self.root = Tk()
>>>             Button(self.root,text="click me",command=self.getvar).pack()
>>>         def getvar(self):
>>>             a=GetVariant()
>>>
>>>d = OneButton()
>>>d.root.mainloop()
>>>
>>>
>>>
>>>
>>>VK wrote:
>>>
>>>
>>>
>>>>Hi!
>>>>What I'm missing in following code? Cannot get the values of
>>>>radiobuttons. Starting only one class (GetVariant), it works. When I put
>>>>two classes together, it doesn't.
>>>>Regards, VK
>>>>
>>>
>>>>from Tkinter import *
>>>
>>>>class GetVariant:
>>>>    def __init__(self):
>>>>        self.root = Tk()
>>>>        self.mainframe = Frame(self.root,bg="yellow")
>>>>        self.mainframe.pack(fill=BOTH,expand=1)
>>>>
>>>>        self.firstframe = Frame(self.mainframe,bg="red")
>>>>        self.firstframe.pack(side=BOTTOM,expand=1)
>>>>
>>>>        global v
>>>>        v = StringVar()
>>>>        self.radiobutton = Radiobutton(self.firstframe,text= "Variant
>>>>1", variable=v, value="Variant 1")
>>>>        self.radiobutton.pack(side=TOP,anchor=W)
>>>>        self.radiobutton.select()
>>>>        self.radiobutton = Radiobutton(self.firstframe,text= "Variant
>>>>2", variable=v, value="Variant 2")
>>>>        self.radiobutton.pack(side=TOP,anchor=W)
>>>>        self.radiobutton = Radiobutton(self.firstframe,text= "Variant
>>>>3", variable=v, value="Variant 3")
>>>>        self.radiobutton.pack(side=TOP,anchor=W)
>>>>
>>>>
>>>>
>>>>        self.secondframe = Frame(self.mainframe,bg="blue")
>>>>        self.secondframe.pack()
>>>>        self.var = Button(self.secondframe,text="What
>>>>Variant",command=self.call)
>>>>        self.var.pack(expand=1,side=BOTTOM)
>>>>
>>>>
>>>>
>>>>    def call(self):
>>>>        self.variant = v.get()
>>>>        print 'Input => "%s"' % self.variant
>>>>
>>>>class OneButton:
>>>>        def __init__(self):
>>>>            self.root = Tk()
>>>>            Button(self.root,text="click me",command=self.getvar).pack()
>>>>        def getvar(self):
>>>>            a=GetVariant()
>>>>
>>>>d = OneButton()
>>>>d.root.mainloop()
>>>
>>>
>>Sorry, but I don't get it. There is no deference between my code and
>>your answer. I'm beginner...
> 
> 

Thanks for your help! Toplevel made the job.
Reg. VK


From bwooster47 at gmail.com  Wed May 25 11:00:09 2005
From: bwooster47 at gmail.com (bwooster47 at gmail.com)
Date: 25 May 2005 08:00:09 -0700
Subject: distutils, install_data and RPM distributions
Message-ID: <1117033208.977885.40680@g43g2000cwa.googlegroups.com>


I have a simple python script that I need to create a kit for, and it
has one config file.
This is for Unix only, and very restricted use, so here's my relevant
setup.py:

setup(....., scripts=['myscript.py'],
      data_files=[('/etc', ['myscript.cfg'])],...)

My problem is that when I repeatedly run "python setup.py install", it
will always overwrite the exising myscript.py, but if a
/etc/myscript.cfg file exists, it will not overwrite it.

I can use the --force option, or I can add force = 1 in [install_data]
in the setup.cfg - but that does not seem to help me with the RPM
packaging.

I looked at the bdist_rpm create .spec file, and for install it says:
python setup.py install --root=$RPM_BUILD_ROOT --record=INSTALLED_FILES

Two questions:
1) Is there a way to customize the %install line created by bdist_rpm
option of the setup.py script?

2) Or, is there a way I can avoid using a setup.cfg, and put all that
info in the setup.py script itself? I would like to add a --force
option to the "data_files" line in the setup() call...



From grahamd at dscpl.com.au  Mon May 16 01:31:53 2005
From: grahamd at dscpl.com.au (grahamd at dscpl.com.au)
Date: 15 May 2005 22:31:53 -0700
Subject: installing mod_python with python 2.4 on Windows xp
References: <c56b627e.0505151952.447670ee@posting.google.com>
Message-ID: <1116221513.055871.238690@z14g2000cwz.googlegroups.com>

Suggested that you ask this on the mod_python mailing list:

  http://mailman.modpython.org/mailman/listinfo/mod_python

Detail exactly what the problems you are having are. The person
who packages the dev versions is on the mod_python list as are
other developers of mod_python. I don't know that they always
keep up to date on mail on the general Python mailing list.

Graham



From kyoguan at gmail.com  Sun May 22 22:49:52 2005
From: kyoguan at gmail.com (kyo guan)
Date: Mon, 23 May 2005 10:49:52 +0800
Subject: profile python in embed system
Message-ID: <429144dd.0032ddc6.3e60.ffff8500@mx.gmail.com>

HI :

	I want to test my system's performance. My system has a python embed. How can I test the proformance like the
python module "profile" or "hotshot" . I can't use the module "profile" because my system are base callback, so I can't run my
system
like this:  profile.run(" xxxx ").  The system call the python like this : " mypython.on_xxx_callback ". but there are too many
callback.
and I want to get the total profile of the hope python script. How can I do? 

Thank you :)
	



From mrmaple at gmail.com  Mon May 23 14:20:01 2005
From: mrmaple at gmail.com (James Carroll)
Date: Mon, 23 May 2005 14:20:01 -0400
Subject: Fwd: Running a python program during idle time only
In-Reply-To: <b273c74105052311182ae25481@mail.gmail.com>
References: <1116637560.499307.28700@o13g2000cwo.googlegroups.com>
	<mailman.7.1116821147.18027.python-list@python.org>
	<1116869538.611233.264960@g14g2000cwa.googlegroups.com>
	<b273c74105052311182ae25481@mail.gmail.com>
Message-ID: <b273c741050523112060930a49@mail.gmail.com>

I think you can keep your sleep commands in your program to keep it
from hogging the cpu even when you are running it as nice.

You know, even more important than cpu load (since your indexer is
accessing the hard drive, is hard drive access..)  You can monitor the
bytes  / second going to the hard drives using a WMI query similar to
the one that gives you LoadPercentage for a cpu.

If something Is trying to read and write to the hard drive, and your
indexer is going at the same time, hard drive head contention can slow
down both processess to a crawl.  (Say your program is in C:/apps  and
another program is simutaneously trying to read from C:/data... the
heads have to seek back and forth between the two spots on the hard
drive, and it's much faster to do all the C:/apps accesses and then
later do all the C:/data accesses.)

So I think my approach would be to have the indexer take about 10% of
cpu load while it is active, and as soon as another process is doing
enough reading / writing to the hard drive, stop and wait for about
five minutes... then continuing.

The screen saver idea is another good one.  I found this the other day...
  http://homepage.hispeed.ch/py430/python/win32screensaver-0.3.2.zip

The problem is that any potential user that really likes their pretty
screen saver (Helios under Ubuntu... droool............ slurp.)  then
they can't have both your indexer and their pretty screensaver active
during idle time.

-Jim







On 23 May 2005 10:32:18 -0700, los <carlos80 at gmail.com> wrote:
> Thanks for all the replies.
>
> I did try using nice under windows.  I created a java program that
> would just loop and print numbers on the screen.  Even when I ran that
> simple program with nice, (lets call it program A) as soon as I started
> the program the cpu went all the way to 100% usage.  Then when I ran
> another program that did the same thing (lets call it program B),
> program A halted to let B finish, then it started again.  Nevertheless
> it still hogged all the cpu while I was using the computer.
>
> For my indexing program I just wrote a simple python program and called
> on the python os.walk() method to iterate through the drive and then it
> connects to a database to store some information.  Then I wrote a
> simple interface to connect to the database to search for files using
> visual basic.  Once everything is indexed it works fine, but it would
> be nice to have the program looping through and indexing the files all
> the time to account to file updates, deletes, and relocation, but
> without hurting the performance when I'm using the computer.
>
> So really what I am looking for is some way to have the program only
> start indexing and crawling through the hd after 5 minutes of no user
> interaction with the computer.
>
> I'm going to take a look at this CPU load possibility.  But I'm afraid
> that this will work similarly to "nice" in which case it will let the
> program kick in when the CPU isn't being used heavily, but I might
> still be using the computer.
>
> thanks once again!
>
> -los
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>
>


From mrstephengross at hotmail.com  Thu May  5 14:20:22 2005
From: mrstephengross at hotmail.com (mrstephengross)
Date: 5 May 2005 11:20:22 -0700
Subject: How to detect a double's significant digits
In-Reply-To: <s6ydnVxK45ow_-ffRVn-qQ@comcast.com>
References: <1115314620.902071.323410@f14g2000cwb.googlegroups.com>
	<mailman.53.1115315497.29826.python-list@python.org>
	<1115315863.050413.275390@g14g2000cwa.googlegroups.com>
	<s6ydnVxK45ow_-ffRVn-qQ@comcast.com>
Message-ID: <1115317222.685180.62020@z14g2000cwz.googlegroups.com>

>But, assuming you have your numbers as strings, I would suggest
looking
at str.split() and len().

Well, the numbers are in fact stored as numbers, so string processing
won't work.

>I'd give you an example, but this sounds kinda like a homework
assignment.

The task may sound like it comes from class, but I can assure you that
I am indeed a professional developer. I'm doing some rather intricate
text processing / rendering stuff these days, and C++ is unfortunately
none too handy for that sort of thing. Unfortunately, I have to use it
for the task.

Thanks,
--Steve



From andre.roberge at gmail.com  Mon May  9 12:14:56 2005
From: andre.roberge at gmail.com (=?ISO-8859-1?Q?Andr=E9_Roberge?=)
Date: Mon, 09 May 2005 13:14:56 -0300
Subject: Advice needed on __del__
Message-ID: <d5o1s1$8h3$1@sea.gmane.org>

Suppose I have two classes: 'Jekyll' and 'Hyde' that are
related in a particular way.

When I create a Jekyll object, a Hyde one gets automatically
created (and displayed on a screen).

==== drum roll to announce Python script ===

Nice = Jekyll()    # Nice_twin, a Hyde object, gets created.

Nice.doStuff()     # Nice_twin is doing his own stuff

def subplot():
     Evil = Jekyll()   # Evil_twin gets created and displayed
     Evil.doStuff()    # Evil_twin does stuff on the screen

subplot()

#Evil.doMoreStuff()  would raise an error, as it no longer exists
       # in this namespace; however, Evil_twin still displayed

Nice.doMoreStuff()   # continues to work.

==========End of script, and ask question=======
Evil_twin is still displayed on the screen at the end.
I would like for Evil_twin to disappear.
(I would like for this Hyde, to hide .... ok, bad pun!)

This morning I had the following thought:
I can, when I create a Jekyll object, update
an outside_list.
If, somehow, I could update that list when
a Jekyll object disappears
(perhaps by using __del__, which I have never touched)
that would solve my problem.

I could check outside_list each time I update
the screen display, and remove Evil_twin when
Evil no longer exists.

Any suggestions?

I've already tried lots of things, but nothing works properly.
Every attempt I make involves quite a bit of coding, as
the real-life situation is a bit more complicated than
what I explain here.
So, before I try again, I thought I would ask the
Collective Wisdom on this list.

------
Andr?



From sector119 at gmail.com  Sun May 15 11:56:39 2005
From: sector119 at gmail.com (sector119)
Date: 15 May 2005 08:56:39 -0700
Subject: Error when calling the metaclass bases function() argument 1 must be
	code, not str
Message-ID: <1116172599.414310.301180@z14g2000cwz.googlegroups.com>

I use python 2.4.1 and PIL 1.1.5 and when I execute my program I got
error:

./code.py
Traceback (most recent call last):
  File "./code.py", line 7, in ?
    class DrawPlus(ImageDraw.Draw):
TypeError: Error when calling the metaclass bases
    function() argument 1 must be code, not str


Why I got this error? It work good on python 2.3 + PIL 1.1.4



#!/usr/bin/env python
# -*- coding: iso8859-1 -*-

import random
import Image, ImageFont, ImageDraw

class DrawPlus(ImageDraw.Draw):
    def __init__(self, im, mode=None):
	ImageDraw.Draw.__init__(self, im, mode=None)

    def text(self, xy, text, fill=None, font=None, angle=None,
anchor=None):
	ink, fill = self._getink(fill)
	if font is None:
	    font = self.getfont()
	if ink is None:
	    ink = fill
	if ink is not None:
	    bitmap = font.getmask(text)
	    if angle is not None:
		bitmap = bitmap.rotate(angle, Image.BILINEAR)
	    self.draw.draw_bitmap(xy, bitmap, ink)

class ImageRandomCode:
    def __init__(self, filename, size=None):
	# plain text code
	self.code = ''
	# code image file name
	self.filename = filename
	# fonts
	import glob
	dir = 'fonts/*.ttf'
	self.fonts = glob.glob(dir)
	# chars tuple
	#self.chars = chars or
('0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z')
	self.chars = ('0','1','2','3','4','5','6','7','8','9')
	# image width
	self.img_width = 100
	# image height
	self.img_height = 30
	# image size = (image width, image height)
	self.img_size = size or (self.img_width, self.img_height)
	# image background color (r,g,b)
	self.img_background_color = (255, 255, 255)
	# image font color (r,g,b)
	self.img_font_color = (0, 0, 0)
	# code length
	self.length = 5
	# minimum font size
	self.font_size_min = 13	# 12
	# maximum font size
	self.font_size_max = 18
	# maximum noise lines to draw
	self.lines_noise_max = 3
	# maximum noise pixels to draw
	self.pixels_noise_percent = 3 # 5
	# maximum char angle
	self.angle_max = 15 # 20

	img = Image.new('RGB', self.img_size, self.img_background_color)
	self.draw = DrawPlus(img)

	self.draw_chars()
	self.draw_noise()

	del self.draw
	img.save(self.filename)

    def draw_noise(self):
	self.draw_noise_pixels()
	self.draw_noise_lines()

    def get_code(self):
	return self.code

    def get_filename(self):
	return self.filename

    def draw_chars(self, chars=None, length=None):
	chars = chars or self.chars
	length = length or self.length
        for i in range(length):
	    font_size = random.randint(self.font_size_min, self.font_size_max)
	    font_name = random.choice(self.fonts)
	    font = ImageFont.truetype(font_name, font_size)
	    angle = random.randint(-self.angle_max, +self.angle_max)
	    text = random.choice(chars)
	    size = self.draw.textsize(text, font=font)
	    x = i*(self.img_width-2-2)/length
	    y = random.randint(2, self.img_height-size[1]-2)
	    self.draw.text((x,y), text, font=font, angle=angle,
fill=self.img_font_color)
	    self.code += text

    def draw_noise_pixels(self, percent=None):
	percent = percent or self.pixels_noise_percent
	N = int(self.img_width*self.img_height*percent/100)
	for i in range(N):
	    x = random.randint(0, self.img_width)
	    y = random.randint(0, self.img_height)
	    self.draw.point((x,y), fill=self.img_font_color)
	for i in range(N):
	    x = random.randint(0, self.img_width)
	    y = random.randint(0, self.img_height)
	    self.draw.point((x,y), fill=self.img_background_color)

    def draw_noise_lines(self, max=None):
	max = max or self.lines_noise_max
	N = random.randint(0, max)
	for i in range(N):
	    x1 = random.randint(0, self.img_width)
	    y1 = random.randint(0, self.img_height)
	    x2 = random.randint(0, self.img_width)
	    y2 = random.randint(0, self.img_height)
	    self.draw.line((x1,y1,x2,y2), fill=(0,0,0))

code = ImageRandomCode('test.png')

print code.get_code()



From ojokimu at yahoo.co.uk  Sun May 15 19:36:31 2005
From: ojokimu at yahoo.co.uk (John Ridley)
Date: Mon, 16 May 2005 00:36:31 +0100 (BST)
Subject: Mandrake 10.1 and Python 2.3.4
Message-ID: <20050515233631.683.qmail@web26808.mail.ukl.yahoo.com>

"Joal Heagney" wrote:

> Hi everyone. I've been getting this error message in python, and it's

> really driving me up the wall.
> 
> 
> [EMAIL PROTECTED] joal]$ python
> 'import site' failed; use -v for traceback
> Python 2.3.4 (#1, Apr 18 2005, 19:03:06)
> [GCC 3.4.1] on linux2
> Type "help", "copyright", "credits" or "license" for more
information.
>  >>>
> 
> Here's the relevant line when i run python in verbose mode:
> 
> 
> 'import site' failed; traceback:
> Traceback (most recent call last):
>    File "/usr/lib/python2.3/site.py", line 169, in ?
>      sys.lib,
> AttributeError: 'module' object has no attribute 'lib'
> 
> Is this a Mandrake or a Python mistake?
> And does anyone know how to fix it?
> 
> I think this is the reason why I'm getting errors when it comes to 
> importing other python packages.

I have both python 2.3.4 and 2.4.1 installed on Mandrake 10.1 - and
only 2.4.1 gives the error.

So - have you tried to install python 2.4 recently?

Also, are you using a pythonrc.py startup file which is trying to
import the sys module? Have a look to see if a PYTHONSTARTUP
environment variable has been set to the path of such a file.

HTH

John Ridley


		
___________________________________________________________ 
How much free photo storage do you get? Store your holiday 
snaps for FREE with Yahoo! Photos http://uk.photos.yahoo.com


From richie at entrian.com  Wed May 11 07:35:02 2005
From: richie at entrian.com (Richie Hindle)
Date: Wed, 11 May 2005 12:35:02 +0100
Subject: Problems with csv module
In-Reply-To: <d5spph$ktm$01$1@news.t-online.com>
References: <d5sngn$l4$03$1@news.t-online.com>
	<mailman.338.1115809896.29826.python-list@python.org>
	<d5spph$ktm$01$1@news.t-online.com>
Message-ID: <a4r381p3s5uhud58tvd2m2nod1ebmo48u0@4ax.com>


[Florian]
> You mean that csv.reader can't work with unicode as the delimiter parameter?

Exactly.  http://www.python.org/doc/2.3.5/lib/module-csv.html says:

"Note: This version of the csv module doesn't support Unicode input. Also,
there are currently some issues regarding ASCII NUL characters. Accordingly,
all input should generally be printable ASCII to be safe. These restrictions
will be removed in the future. "

That note is still there in the current development docs, so it looks like
it hasn't yet been fixed.

-- 
Richie Hindle
richie at entrian.com



From bogus@does.not.exist.com  Tue May 31 15:15:02 2005
From: bogus@does.not.exist.com ()
Date: Tue, 31 May 2005 19:15:02 -0000
Subject: No subject
Message-ID: <mailman.38.1572217238.3356.python-list@python.org>

#! rnews 1598
Newsgroups: comp.lang.python
Path: news.xs4all.nl!newsspool.news.xs4all.nl!transit.news.xs4all.nl!newsfeeder.wxs.nl!textfeed1.on.meganewsservers.com!meganewsservers.com!feeder2.on.meganewsservers.com!216.196.98.140.MISMATCH!border1.nntp.dca.giganews.com!nntp.giganews.com!diablo.voicenet.com!nntp.abs.net!attws2!ip.att.net!NetNews1!xyzzy!nntp
From: Harry George <harry.g.george at boeing.com>
Subject: Re: something like CPAN, PPMs?
X-Nntp-Posting-Host: cola2.ca.boeing.com
Content-Type: text/plain; charset=us-ascii
Message-ID: <xqx3bs3gr3b.fsf at cola2.ca.boeing.com>
User-Agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.4
Lines: 38
Sender: hgg9140 at cola2.ca.boeing.com
Organization: The Boeing Company
References: <mailman.293.1117551472.18027.python-list at python.org>
Mime-Version: 1.0
Date: Tue, 31 May 2005 18:58:32 GMT
Xref: news.xs4all.nl comp.lang.python:379601

Alex Gittens <swiftset at gmail.com> writes:

> I'm new to Python from Perl, and loving it. Has there ever been any
> discussion of creating a similar resource as CPAN for Python, or a
> similar distribution method as PPMs? Seems like it would make a great
> language even better.
> 
> Alex
> -- 
> http://tangentspace.net/cz

CPAN:
1. A lot of the CPAN subject matter is in the base python installation.

2. Much of the remainder is associated with projects which are doing
   something else and happen to provide python bindings.

3. That leaves python-specific libraries as
   candidates for a CPAN.  See:
http://www.python.org/pypi
(see also http://www.python.org/sigs/catalog-sig/)
http://www.vex.net/parnassus/  (the original classic)

PPM:
The typical python install is:
   a) unzip and untar
   b) run "python setup.py install"

So what you are looking for is setup.py, and its module, distutils
http://docs.python.org/lib/module-distutils.html


   

-- 
harry.g.george at boeing.com
6-6M21 BCA CompArch Design Engineering
Phone: (425) 294-4718


From lamthierry at gmail.com  Fri May  6 22:56:34 2005
From: lamthierry at gmail.com (lamthierry at gmail.com)
Date: 6 May 2005 19:56:34 -0700
Subject: Listening to changes in a C++ variable from python
Message-ID: <1115434594.806252.12740@o13g2000cwo.googlegroups.com>

Let's say I have the following source code in C++:

// The following is in a .cpp file

int val = 0;
for ( int i = 0; i < 10; i++ )
   val = i;


// Now I'm in a python GUI, glade or GTK
Is it possible from the GUI side to listen to changes in the val
variable? Once I notice a change in the variable, I will update a
widget(for example a display progress bar from glade). Any advice or
solutions?



From mohan at terabolic.com  Sun May 29 20:20:33 2005
From: mohan at terabolic.com (MKoool)
Date: 29 May 2005 17:20:33 -0700
Subject: stdout and stderr showing output only after script is done
Message-ID: <1117412433.739654.3770@g44g2000cwa.googlegroups.com>

I just installed python 2.4 for windows.  I was using the cygwin
version previously, but wanted to use the official python 2.4 release
to install a module that reads off some registry entries.

After installing, I did what I normally do, ssh to my local windows
machine, and run the python script I wrote.  The script takes about 30
seconds to complete and gives me incremental output.  I ran it, and it
seems to be buffering standard input and  output.  It ran my whole
script and showed me all the output of stderr and stdout only after the
whole script was done.  For example, my script can sometimes take like
10 minutes to finish, so I print out "1% complete", "2% complete" and
so on.  Now it shows me nothing, and at the end, it just tells me "1%
complete, 2% complete... 100% complete" all in one shot.

Can I change this behavior somehow?

thanks,
mohan



From dcrespo at gmail.com  Mon May  9 11:17:21 2005
From: dcrespo at gmail.com (dcrespo)
Date: 9 May 2005 08:17:21 -0700
Subject: Adapt PyShell's code completion into DrPython
Message-ID: <1115651841.010784.273510@z14g2000cwz.googlegroups.com>

I would like to adapt the PyShell code completion to DrPython, because
both
programs are very good... Any clue for start finding the code location
in 
both programs to accomplish this?

Thanks



From fredrik at pythonware.com  Sat May 28 09:28:59 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Sat, 28 May 2005 15:28:59 +0200
Subject: Tkinter slowes down
References: <d79a1v$15j4$1@ns.felk.cvut.cz>
Message-ID: <d79rii$8lg$1@sea.gmane.org>

"pavel.kosina" <geon at post.cz> wrote:

> It seems to me that in my "again and again repainting canvas" script the
> rendering is slowing down as the time goes.

when you add an item to the canvas, it's part of the canvas
until you remove it.  if performance drops, it's usually because
you keep adding new items without removing the old ones.

try adding a w.delete(ALL) call before you "repaint".

for better performance, you should restructure your code so
it modifies existing canvas items, when possible, rather than
deleting and recreating items all the time.

if you want a light-weight canvas, you might wish to look at

    http://effbot.org/zone/wck.htm

and especially

    http://effbot.org/zone/wck-3.htm

</F>





From irmen.NOSPAM at xs4all.nl  Thu May 12 13:27:11 2005
From: irmen.NOSPAM at xs4all.nl (Irmen de Jong)
Date: Thu, 12 May 2005 19:27:11 +0200
Subject: Speed of the different python-based HTTP-servers
In-Reply-To: <1115908748.074269.9470@g43g2000cwa.googlegroups.com>
References: <1115908748.074269.9470@g43g2000cwa.googlegroups.com>
Message-ID: <428391f3$0$64736$e4fe514c@news.xs4all.nl>

Thomas W wrote:

> I don't expect this project to have alot of traffic once online, but it
> would kinda suck if my software couldn't handle it if it really took
> off.

What would be "a lot"....

> So my question is; based on the very brief description above, are there
> any of the python-based frameworks that fits my project better than the
> others? And are there some of the frameworks that doesn't scale
> particulary well? Benchmarks anyone?

With the note that benchmarks are dangerous, here are some numbers:
http://snakelets.sourceforge.net/benchmark.html

I'd say just install it on your own system and run your own tests.

> I want to use ZPT or simpleTAL for templating and SQLObject for
> database-access etc if that makes any differences.

Snakelets has Ypages for templating, but it is not really
difficult to use your own template library (someone is successfully
using PyMeld, for instance).
It is database agnostic, meaning that no database code whatsoever
is in the package. This means that you are 100% free to choose
your own db persistence system.

--Irmen.


From gabor at nekomancer.net  Tue May 10 10:30:23 2005
From: gabor at nekomancer.net (Gabor Farkas)
Date: Tue, 10 May 2005 16:30:23 +0200
Subject: www.pythonchallange.com
Message-ID: <7eec1$4280c5eb$3eb01f24$10197@news.flashnewsgroups.com>

www.pythonchallange.com


From tim.golden at viacom-outdoor.co.uk  Fri May 13 04:12:55 2005
From: tim.golden at viacom-outdoor.co.uk (Tim Golden)
Date: Fri, 13 May 2005 09:12:55 +0100
Subject: python and printers
Message-ID: <9A28C052FF32734DACB0A288A3533991EBB80C@vogbs009.gb.vo.local>

[Alex Moreno]
| 
| i?m writing an applications under wxphython and i need to print some
| data in an external printer (usb, parallel, i suppose that it doesn?t
| mind. Excuse me for the (maybe) stupid question but, how can i do it?
| where can i found information about it?

Seems to be a popular subject. Check out this thread from
yesterday:

http://groups-beta.google.com/group/comp.lang.python/browse_frm/thread/299c533103a40a2b/7546189860376f57?tvc=1&q=wxpython&hl=en#7546189860376f57

(PS Is there some shorter way of linking to Google Groups?)

TJG

________________________________________________________________________
This e-mail has been scanned for all viruses by Star. The
service is powered by MessageLabs. For more information on a proactive
anti-virus service working around the clock, around the globe, visit:
http://www.star.net.uk
________________________________________________________________________


From benji at benjiyork.com  Mon May 30 20:44:58 2005
From: benji at benjiyork.com (Benji York)
Date: Mon, 30 May 2005 20:44:58 -0400
Subject: how to prepend string to a string?
In-Reply-To: <1117498752.591304.42280@g44g2000cwa.googlegroups.com>
References: <1117498752.591304.42280@g44g2000cwa.googlegroups.com>
Message-ID: <429BB38A.5010506@benjiyork.com>

flamesrock wrote:
> so I know you can append a string. But how do you *prepend* a string,
> as shown in the following code
> 
> #dirList = ['depth1','depth2','depth3']
> #string = """position"""
> #for x in len(dirList):
> #   string += '>> %s'%dirList.pop()    #(????????????)
> #

How about string = whatever + string?

Note that recommended form is to build a list of strings and then use 
''.join(all_my_strings) to form the final result.

After saying all that, here's a better way:

dirList = ['depth1','depth2','depth3', 'position']
print ' >> '.join(dirList)
--
Benji York


From ruach at chpc.utah.edu  Wed May  4 15:20:28 2005
From: ruach at chpc.utah.edu (Matthew Thorley)
Date: Wed, 04 May 2005 13:20:28 -0600
Subject: How do you convert a string obj to a file obj?
In-Reply-To: <42790d0c$0$79465$14726298@news.sunsite.dk>
References: <d5at2j$7uv$1@vegh.ks.cc.utah.edu>
	<42790d0c$0$79465$14726298@news.sunsite.dk>
Message-ID: <d5b79u$agp$1@vegh.ks.cc.utah.edu>

Esben Pedersen wrote:
> Matthew Thorley wrote:
> 
>> I'm writing a web app whereby a user uploads a tar acrhive which is then
>> opened and processed. My web form reads the file like this:
>>
>> while 1:
>>     data = value.file.read(1024 * 8) # Read blocks of 8KB at a time
>>     if not data: break
>>
>> which leaves me with data as a string obj. The problem that I have is
>> that the function that processes the archive expects a file object. So
>> far the only solution I have found it to write the file to disk and then
>> read it back.
>>
>> Is there an easy way to convert data, in the example above into a file
>> object?
>>
>> Thanks
>> -Matthew
> 
> 
> value.file is a file object. Why don't you give that as an argument?
> 
> /Esben

Ok I tried that but I still get this error. Any clue what I need to do?

AttributeError: 'file' object has no attribute 'rfind'


thanks
-Matthew


From matthew_shomphe at countrywide.com  Fri May 13 21:30:31 2005
From: matthew_shomphe at countrywide.com (Matt)
Date: 13 May 2005 18:30:31 -0700
Subject: How to find the classname of an object? (was Python Documentation)
References: <mailman.503.1115940149.29826.python-list@python.org>
	<hGRge.14335$941.9700@trnddc08> <4283fda8.18221170@news.oz.net>
	<d62dg3$tpe$1@sea.gmane.org>
	<mailman.32.1115997422.29328.python-list@python.org>
	<1116002227.923231.309150@f14g2000cwb.googlegroups.com>
	<4284f28c.80913136@news.oz.net>
	<1116021553.771015.320200@g14g2000cwa.googlegroups.com>
	<42853387.97548507@news.oz.net>
Message-ID: <1116034231.282108.160370@g49g2000cwa.googlegroups.com>


Bengt Richter wrote:
> On 13 May 2005 14:59:13 -0700, "Matt"
<matthew_shomphe at countrywide.com> wrote:
> >
> >Bengt Richter wrote:
> [...]
> >> I'm afraid inheriting explicitly from object will make the
exception
> >unraisable.
> >> Exceptions are still based on "classic" classes for some reason
that
> >> I don't know enough about to explain.
> >>
> >> So if you were hoping to use .mro() with old-style classes to see
the
> >> old-style inheritance chain, as opposed to new-style inheritance
that
> >> underlies access to special entities involved in the
implementation
> >of the old, sorry ;-/
> >>
> >> At least that's the way it looks to me, without digging in that
part
> >of the code.
> >>
> >> Regards,
> >> Bengt Richter
> >
> >D'oh!  So I tested the .mro() functionality but not the
> >Exception-raisableness (?).
> >
> >It seems unintuitive to me as to why inheriting from  "object" would
> >prevent something that also inherited from "Exception" from being
> >raised.  Does anyone have insight into why this happens?
> >
> I googled for some discussion and found something straight from the
BDFL:
>
>
http://mail.python.org/pipermail/python-dev/2005-January/051098.html
>
> with a lot of interesting followup. Don't know what the status of the
> patch is now.
>
> Regards,
> Bengt Richter

Great googling!  Reading through to the end it seems that there will be
a patch for 2.5:
http://sourceforge.net/tracker/index.php?func=detail&aid=1104669&group_id=5470&atid=305470
(although from the thread you found, it appears to be somewhat
temporary in case everything starts breaking :-)   )



From ccurvey at gmail.com  Tue May 10 13:00:48 2005
From: ccurvey at gmail.com (Chris Curvey)
Date: 10 May 2005 10:00:48 -0700
Subject: win32com and IIS
In-Reply-To: <1115744207.222691.276160@f14g2000cwb.googlegroups.com>
References: <1115744207.222691.276160@f14g2000cwb.googlegroups.com>
Message-ID: <1115744448.883123.301260@f14g2000cwb.googlegroups.com>

my OS is Win2K (server, I think) if that makes any difference.



From steven.bethard at gmail.com  Wed May 18 11:39:04 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Wed, 18 May 2005 09:39:04 -0600
Subject: super() and automatic method combination
In-Reply-To: <7xvf5gra9z.fsf_-_@ruckus.brouhaha.com>
References: <7xvf5gra9z.fsf_-_@ruckus.brouhaha.com>
Message-ID: <WO6dnbd6N9Yz_BbfRVn-rA@comcast.com>

Paul Rubin wrote:
> I'm trying the super() function as described in Python Cookbook, 1st ed,
> p. 172 (Recipe 5.4).
> 
>     class A(object):
>         def f(self):
>                 print 'A'
> 
> 
>     class B(object):
>         def f(self):
>                 print 'b'
> 
> 
>     class C(A,B):
>         def f(self):
>                 super(c,self).f()
>                 print 'C'
> 
>     def test(cls):
>        x = cls()
>        x.f()
> 
>     test(C)

You want a super object that doesn't raise an exception if the 
superclass doesn't have a particular function.  Try sopmething like:

py> class mysuper(super):
...     def __getattribute__(self, name):
...         try:
...             return super(mysuper, self).__getattribute__(name)
...         except AttributeError:
...             def null(*args, **kwargs):
...                 pass
...             return null
...
py> class A(object):
...     def f(self):
...          mysuper(A, self).f()
...          print 'A'
...
py> class B(object):
...     def f(self):
...          mysuper(B, self).f()
...          print 'B'
...
py> class C(A, B):
...     def f(self):
...          mysuper(C, self).f()
...          print 'C'
...
py> C().f()
B
A
C

I haven't been careful here to only replace functions with functions. 
That is, I probably should make a real Null object that acts both like 
the null function above and like the None object otherwise.  But as long 
as you're only using mysuper to get functions, this should work ok. 
Personally, I would probably do what others have suggested and add a 
base class with an f method from which A and B derive, but if that's not 
an option, you can play around with subclassing super and probably get 
something like what you want.

STeVe


From tjreedy at udel.edu  Sun May 15 14:31:21 2005
From: tjreedy at udel.edu (Terry Reedy)
Date: Sun, 15 May 2005 14:31:21 -0400
Subject: Is isinstance always "considered harmful"?
References: <1116157672.683839.49700@o13g2000cwo.googlegroups.com>
Message-ID: <d684h7$boc$1@sea.gmane.org>


"Jordan Rastrick" <jrastrick at student.usyd.edu.au> wrote in message 
news:1116157672.683839.49700 at o13g2000cwo.googlegroups.com...

> I've read arguments, here and elsewhere, to the effect that in Python
> isinstance should be avoided like the plague, except in a few very
> specific and narrow circumstances.

Putting it like this is rather extreme.

> Roughly speaking, due in part to
> Python's dynamic nature its better to concern yourself only with the
> interface an object provides, and not whether it happens to inherit
> from a given base class.

To my mind, your example of using isinstance to select a better (such as 
speedier) subalgorithm for a special case is not just fine, but good 
programming.  (Selecting a subalgorithm that works more robustly is also a 
good reason for special casing.)  It is an internal matter whose externally 
visible effect is to improve performance.

Using isinstance to unnecessarily narrow the domain is quite different.  It 
has the externally visible effect of degrading performance (to a nullity) 
for arguments that the user might reasonably want to work.

Terry J. Reedy





From olivier.elbaz at gmail.com  Tue May  3 14:28:37 2005
From: olivier.elbaz at gmail.com (Olivier Elbaz)
Date: Tue, 3 May 2005 20:28:37 +0200
Subject: How to read an integer value from a binary file?
In-Reply-To: <20050503175003.GE8344@unpythonic.net>
References: <db5ab7e30505031046610bca75@mail.gmail.com>
	<20050503175003.GE8344@unpythonic.net>
Message-ID: <db5ab7e305050311285f4a422d@mail.gmail.com>

Hi Jeff,

You was right, my problem was coming from the number of items that I
gave to the "unpack" method.
I was thinking,like an array in C, that slice [2:5] will give 4 items and not 3.

Thanks a lot for your help.
Olivier 

On 5/3/05, Jeff Epler <jepler at unpythonic.net> wrote:
> As your 'for' loop shows, the number of items in the slice [2:5] is only
> 3, not 4.
> 
> Maybe you want the slice [2:6] instead.
> 
> >>> x = "xx\xb6/\0\0"
> >>> struct.unpack('i', x[2:6])
> (12214,)
> 
> Jeff
> 
> 
>


From me at privacy.net  Tue May 10 21:52:36 2005
From: me at privacy.net (Dan Sommers)
Date: 10 May 2005 21:52:36 -0400
Subject: [PyQt] browse for a directory
References: <1115768965.099878.22790@f14g2000cwb.googlegroups.com>
Message-ID: <m23bsuzfyz.fsf@unique.fully.qualified.domain.name.yeah.right>

On 10 May 2005 16:49:25 -0700,
"tim.stoop at gmail.com" <tim.stoop at gmail.com> wrote:

> But I can't find any Qt widget that enables me to browse for a
> directory! ...

Try QFileDialog.getExistingDirectory.

HTH,
Dan

-- 
Dan Sommers
<http://www.tombstonezero.net/dan/>


From bokr at oz.net  Mon May  9 23:27:00 2005
From: bokr at oz.net (Bengt Richter)
Date: Tue, 10 May 2005 03:27:00 GMT
Subject: Inverse confusion about floating point precision
References: <mailman.218.1115660266.29826.python-list@python.org>
	<1115661982.476675.7940@f14g2000cwb.googlegroups.com>
Message-ID: <428028ad.1131292913@news.oz.net>

On 9 May 2005 11:06:22 -0700, "Dan Bishop" <danb_83 at yahoo.com> wrote:

>Skip Montanaro wrote:
>> I understand why the repr() of float("95.895") is
>"95.894999999999996".
>> What I don't understand is why if I multiply the best approximation
>to
>> 95.895 that the machine has by 10000 I magically seem to get the lost
>> precision back.  To wit:
>>
>>     % python
>>     Python 2.3.4 (#12, Jul  2 2004, 09:48:10)
>>     [GCC 3.3.2] on sunos5
>>     Type "help", "copyright", "credits" or "license" for more
>information.
>>     >>> 95.895
>>     95.894999999999996
>>     >>> 95.895 * 10000
>>     958950.0
>>
>> Why isn't the last result "958949.99999999996"?  IOW, how'd I get
>back the
>> lost bits?
>
>You were just lucky.
>
>The floating-point representation of 95.895 is exactly 6748010722917089
>* 2**-46.
>
>Multiplying by 10000 gives you 67480107229170890000 * 2**-46.  But
>floats can have only 53 significant bits, so this gets normalized to
>8237317776998399.658203125 * 2**-33 and rounded to 8237317776998400 *
>2**-33, which happens to be exactly equal to 958950.
>
>For analogy, consider a decimal calculator with only 3 significant
>digits.  On this calculator, 1/7=0.143, an error of 1/7000.
>Multiplying 0.143 by 7 gives 1.001, which is rounded to 1.00, and so
>you get an exact answer for 1/7*7 despite roundoff error in the
>intermediate step.
>

In bits, the above appears as

 >>> prb(95.895)
 '1011111.1110010100011110101110000101000111101011100001'
 >>> len(prb(95.895).split('.')[1])
 46
 >>> prb(95.895*2**46)
 '10111111110010100011110101110000101000111101011100001'
 >>> int(prb(95.895*2**46),2)
 6748010722917089L
 >>> int(prb(95.895*2**46),2)*10000
 67480107229170890000L
 >>> prb(int(prb(95.895*2**46),2)*10000)
 '111010100001111001011111111111111111111111111111111111010100010000'
 >>> prb(int(prb(95.895*2**46),2)*10000)[:53]
 '11101010000111100101111111111111111111111111111111111'
 >>> int(prb(int(prb(95.895*2**46),2)*10000),2)/2.**46
 958950.0
 >>> prb(int(prb(int(prb(95.895*2**46),2)*10000),2)/2.**46)
 '11101010000111100110'

Regards,
Bengt Richter


From martin at v.loewis.de  Mon May 23 09:12:02 2005
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Mon, 23 May 2005 15:12:02 +0200
Subject: minidom and DTD
In-Reply-To: <mailman.15.1116844419.18027.python-list@python.org>
References: <mailman.15.1116844419.18027.python-list@python.org>
Message-ID: <4291d6a2$0$10994$9b622d9e@news.freenet.de>

Laszlo Zsolt Nagy wrote:
> How can I put the
> 
> <!DOCTYPE collection SYSTEM "recipes.dtd">
> 
> thing into an XML created by xml.dom.minidom?

You should put a DocumentType node into your
DocumentNode, and pass a qualifiedName of
"collection" and a systemId of "recipes.dtd"
to the createDocumentType call.

Regards,
Martin


From duikboot at localhost.localdomain  Mon May 30 03:11:55 2005
From: duikboot at localhost.localdomain (db)
Date: Mon, 30 May 2005 09:11:55 +0200
Subject: write html-headers (utf-8)
Message-ID: <pan.2005.05.30.07.11.54.252974@localhost.localdomain>

Hello all,

I hope this is the correct newsgroup for this question.

Does anybody know how I can write a html-header with python(cgi)? 
The problem is, I have a few html templates in which I have a header e.g:

<!DOCTYPE  HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">

In this template I write a few Mysql variables. 
Those variable often have german characters. This characters (G??sing in
stead of G?sing). The german characters in the html template are shown
correctly.

If I change the character encoding with the browser to utf-8, all the characters are shown correctly. 
As you can see, I put in the header of the html template that the encoding
is UTF-8, the browser still shows windows ISO-8859-15. Can I write the
header with python so the browser uses the utf-8 encoding?

My hosting providor uses fedora core 2, Python 2.2.3, MySQLdb. Mysql 3.23.58

I googled for hours, but I can't find the answer. I hope ypu can help me.

Thanks in advance.

Arjen



From farcepest at gmail.com  Thu May 12 10:15:40 2005
From: farcepest at gmail.com (Andy Dustman)
Date: 12 May 2005 07:15:40 -0700
Subject: "/usr/bin/ld: cannot find -lmysqlclient" when building
	MySQL-Python
References: <1115831866.751681.39670@g43g2000cwa.googlegroups.com>
Message-ID: <1115907340.175747.55640@f14g2000cwb.googlegroups.com>

francescomoi at europe.com wrote:
> Hi. I'm trying to build MySQL-python-1.2.0 on my Linux FC2
> (with MySQL 3.23.58).

See:

https://sourceforge.net/tracker/index.php?func=detail&aid=1146226&group_id=22307&atid=374932

And also try the new 1.2.1c3 release candidate.



From grant at idscape.co.za  Fri May 27 06:16:48 2005
From: grant at idscape.co.za (grant at idscape.co.za)
Date: 27 May 2005 03:16:48 -0700
Subject: struct unpack newline
Message-ID: <1117189007.980813.182830@g14g2000cwa.googlegroups.com>

Hi All,

I am pretty new to python and am having a problem
intepreting binary data using struct.unpack.
I am reading a file containing binary packed data
using open with "rb". All the values are coming through
fine when using (integer1,) = struct.unpack('l', line[86:90])
except when line[86:90] contains "carriage-return" "linefeed"
which are valid binary packed values. Error = unpack
string size dows not match format. It seems that
struct, instead of reading 4 bytes for line[86:90]
only reads 2 bytes if the second byte is CR or LF.

Thanks
Grant



From rbt at athop1.ath.vt.edu  Thu May 26 10:09:08 2005
From: rbt at athop1.ath.vt.edu (rbt)
Date: Thu, 26 May 2005 10:09:08 -0400
Subject: urllib2 and SSL
In-Reply-To: <1117085151.968298.160740@f14g2000cwb.googlegroups.com>
References: <d73erd$pjm$1@solaris.cc.vt.edu>
	<1117085151.968298.160740@f14g2000cwb.googlegroups.com>
Message-ID: <d74la4$2a$1@solaris.cc.vt.edu>

flamesrock wrote:
> don't you need to install openSSL?
> 
> I'm not sure.
> 

I don't understand why, but that fixes it. I used the OpenSSL binary 
from here: http://www.openssl.org/related/binaries.html

Thanks for the tip... how *does* all of the other Win32 apps handle SSl 
w/o installing OpenSSL? Do they bundle it and only use it for 
themselves? That seems foolish.


From danb_83 at yahoo.com  Tue May  3 00:20:28 2005
From: danb_83 at yahoo.com (Dan Bishop)
Date: 2 May 2005 21:20:28 -0700
Subject: Python Challenge ahead [NEW] for riddle lovers
References: <d4u60o$akh$1@news2.netvision.net.il>
	<mailman.47.1114818531.14961.python-list@python.org>
	<1114924100.296223.114020@g14g2000cwa.googlegroups.com>
	<1114927892.321086.60190@z14g2000cwz.googlegroups.com>
	<zX%ce.78213$ft1.5056576@phobos.telenet-ops.be>
	<Zj2de.78345$a42.5091422@phobos.telenet-ops.be>
	<mailman.6.1115001137.6583.python-list@python.org>
	<3dmi74F6q7m6hU2@individual.net>
	<mailman.73.1115090620.6583.python-list@python.org>
Message-ID: <1115094028.508122.174390@l41g2000cwc.googlegroups.com>

Dan Christensen wrote:
> Reinhold Birkenfeld <reinhold-birkenfeld-nospam at wolke7.net> writes:
>
> > Dan Christensen wrote:
> >> Roel Schroeven <rschroev_nospam_ml at fastmail.fm> writes:
> >>
> >>> There's no level 12 yet though.
> >>
> >> Now there's a 12 and a 13 (at least!).
> >
> > Anyone solved 12? Hints?
>
> **hint below**
>
> Look at the filename for the first image you see,

You mean "evil1.jpg"?

> and make a guess at another filename.

I've made tons of guesses, but none of them worked :-(



From turbos10 at interia.pl  Sun May 29 14:56:48 2005
From: turbos10 at interia.pl (turbos10)
Date: Sun, 29 May 2005 20:56:48 +0200
Subject: double w pythonie?
Message-ID: <Xns9665D51559607turboswiecznieywy@127.0.0.1>

Witam!
Z jaka precyzja python dokonuje obliczen zmiennoprzecinkowych. Czy jest 
w pythonie typ podwojnej precyzji (double z c).
Pozdrawiam
-- 
Uwagi o b??dach ortograficznych czy interpunkcyjnych, oraz wszelkie 
s?owne utarczki za?atwiaj listami prywatnymi.


From http  Mon May 23 05:08:36 2005
From: http (Paul Rubin)
Date: 23 May 2005 02:08:36 -0700
Subject: Manipulating mailboxes
References: <mailman.11.1116838742.18027.python-list@python.org>
Message-ID: <7xhdgu1f8r.fsf@ruckus.brouhaha.com>

Laszlo Zsolt Nagy <gandalf at geochemsource.com> writes:
> But this looks so clumsy. Is there a way to delete/add messages to
> mailboxes of different users, directly?

Why not use procmail or equivalent to drop incoming messages into
your daemon one at a time.  Then use the smtp module to forward them
to their actual destinations.


From curi at curi.us  Fri May 27 13:26:52 2005
From: curi at curi.us (Elliot Temple)
Date: Fri, 27 May 2005 10:26:52 -0700
Subject: Case Sensitive, Multiline Comments
In-Reply-To: <Xns9663A707DDEF9duncanbooth@127.0.0.1>
References: <1117137316.140791.210430@g14g2000cwa.googlegroups.com>
	<8664x5y92g.fsf@guru.mired.org> <429654DA.9050903@lexicon.net>
	<1117154013.092736.298310@g14g2000cwa.googlegroups.com>
	<qc7d9112aqr5tj8devjeaign84dc21ti8p@4ax.com>
	<Xns96635F84E6901duncanbooth@127.0.0.1>
	<119eccdgjtaru5d@news.supernews.com>
	<Xns9663A707DDEF9duncanbooth@127.0.0.1>
Message-ID: <CAE0D49D-E31D-4C7E-93F6-57C8E8D89792@curi.us>

One other interesting thing about case sensitivity I don't think  
anyone has mentioned: in Python keywords are all lowercase already  
(the way I want to type them).  In some other languages, they aren't...

-- Elliot Temple
http://www.curi.us/


---
[This E-mail scanned for viruses by Declude Virus]



From smokerdude66 at myway.com  Wed May 11 13:22:44 2005
From: smokerdude66 at myway.com (MC05)
Date: Wed, 11 May 2005 10:22:44 -0700
Subject: Jesus said, "I am the way,
	the truth and the life: no one can come to the Father(God)(in Heaven),
	but by me." (John 14:6) This means that if you die without trusting in
	Jesus Christ as your Lord and Saviour you will die in your sins
	and be forever sepa
References: <1115824563.613661.169620@g47g2000cwa.googlegroups.com>
	<M%qge.1317047$Xk.244810@pd7tw3no>
Message-ID: <3eeta6F2m45kU1@individual.net>


"don freeman" <dfreem3 at nospam.shaw.ca> wrote in message
news:M%qge.1317047$Xk.244810 at pd7tw3no...
> The truth is, Jesus should never have torn down the fig tree. He got so
> pissed off at the fig tree for not having figs, even though it wasn't
> fig season. This was not the action of someone who has even a little
> truth and light.
>
> Imagine if Jesus came back now. I'd hate to see his road rage.

I'm sure he'd drive fine.

But if a fig tree pulled in front of him.......woof!!
>




From karlmax at tiscalinet.it  Sun May 29 09:34:20 2005
From: karlmax at tiscalinet.it (Karl Max)
Date: Sun, 29 May 2005 15:34:20 +0200
Subject: 2D vector graphics Problem
Message-ID: <4299c4de$0$17099$5fc30a8@news.tiscali.it>

Hi all,

I'm new here. Name's Max from tuscany, and I don't speak english very well 
:-) I am not veteran at coding, I am most like an "artisan coder" since 
commodore 64 times.

Now the problem:
I would like to have a little 2d engine to calculate and trace segments and 
poly's and their collisions, rotations and trasformations. I didn't 
understand too much in tutorials (you're all high school coders, well 
informed in maths and programming theory!!! :-))) so I took my old school 
books on Cartesian space and had a refresh. Proceeding in this not too 
optimized way of coding my needs, I took down some generic classes to 
describe primitive objects in space (vertexes, segments, poly's etc...).

Now I try to make a point rotate around another point.
Here's my piece of code:

def rotate(self, w):
 # This method belongs to the class Vertex
 # w = angle expressed in radiants
 x, y = self.coords
 xRel, yRel = self.relPoint # The rotation should be relative to this
 sin, cos = math.sin(w), math.cos(w)
 x = x * cos - y * sin - xRel * cos + yRel * sin + xRel
 y = x * sin + y * cos - xRel * sin - yRel * cos + yRel
 self.coords = (x,y)

I know the style isn't professional, and if you should have some piece of 
advice, you're welcome... but that's not the question.
When I render it graphically, using pygame 1.6, the point tends to fall 
towards the center of rotation round after round. I mean if I have a loop 
rotating the point by a fixed angle, the point is like "attracted" by the 
center every round it does, like in a vortex.
I think it depends from float representation inside python, but I have no 
clear idea about how to resolve it. Maybe should I use Decimal module? Or is 
there any trick on this subject (2D vector graphics?) that I can't even 
imagine?
Thanks you all,
 Max 




From fredrik at pythonware.com  Thu May 26 13:49:50 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 26 May 2005 19:49:50 +0200
Subject: File list from listdir or shell?
References: <1117114300.592398.92440@f14g2000cwb.googlegroups.com>
Message-ID: <d75246$ap$1@sea.gmane.org>

qwweeeit at yahoo.it wrote:

> Unluckily, to capture the stdout I have to redirect it to a file...
> I hoped that this could work ...
> lF=sys.stdin.readline(os.system("ls -1 *.py"))

hint: look up "os.popen" and "subprocess" in the library reference.

</F>





From danricofer at gmail.com  Wed May 18 18:13:24 2005
From: danricofer at gmail.com (Daniel)
Date: 18 May 2005 15:13:24 -0700
Subject: import cx_Oracle fails!
Message-ID: <1116454404.355741.51730@f14g2000cwb.googlegroups.com>

Hello from Brazil :-)

I'm trying to bring cx_Oracle alive on my Python 2.4.1 @ HP-UX 11
(suckz) and Oracle 10.1.0 64bits without success

I've already tryied the suggestions from Bernard Delm?e and Martin v.
L?wis (topic "Python 2.3b1 + cx_oracle 3.0 on HP-UX"), but it didn't
work, even when I recompiled Python with the "-lc -lpthread" options.
The result was:

>>> import cx_Oracle
/usr/lib/dld.sl: Can't shl_load() a library containing Thread Local
Storage: /usr/lib/libcl.2
/usr/lib/dld.sl: Exec format error
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
ImportError: Failed to load
/usr/local/lib/python2.4/site-packages/cx_Oracle.sl
>>>

Any other suggestion?

Thank you all in advance!



From just at xs4all.nl  Sun May 29 05:08:36 2005
From: just at xs4all.nl (Just)
Date: Sun, 29 May 2005 11:08:36 +0200
Subject: Creating dict from keys and values
References: <d7c0d5$nv0$1@star.cs.vu.nl>
Message-ID: <just-FD273E.11083629052005@news1.news.xs4all.nl>

In article <d7c0d5$nv0$1 at star.cs.vu.nl>,
 Dirkjan Ochtman <dochtman at cs.vu.nl> wrote:

> Hi there,
> 
> I'm looking for an intuitive way of creating a dict from what the 
> dict.keys() and dict.values() will return (two lists).
> 
> Currently, I'm using this code:
> 
> > d = {}
> > for i in range(len(data)):
> > 	d[header[i]] = data[i]
> 
> But this feels kind of inelegant. So: is there a better way?

   d = dict(zip(header, data))

Just


From prabapython at yahoo.co.in  Sat May  7 02:25:04 2005
From: prabapython at yahoo.co.in (praba kar)
Date: Sat, 7 May 2005 07:25:04 +0100 (BST)
Subject: Reg strip_tags function in Python.
In-Reply-To: 6667
Message-ID: <20050507062504.74842.qmail@web8410.mail.in.yahoo.com>


Dear All,

In Php I can use strip_tags() function to strip out
all html tags. I want to know that strip_tags()
equivalent function in Python.

regards 
praba

________________________________________________________________________
Yahoo! India Matrimony: Find your life partner online
Go to: http://yahoo.shaadi.com/india-matrimony


From rbt at athop1.ath.vt.edu  Fri May 20 22:22:02 2005
From: rbt at athop1.ath.vt.edu (rbt)
Date: Fri, 20 May 2005 22:22:02 -0400
Subject: appending key-value pairs to a dict
In-Reply-To: <mdCdnY-2x9w-2RPfRVn-tQ@powergate.ca>
References: <d6lfsg$5t1$1@solaris.cc.vt.edu>
	<mdCdnY-2x9w-2RPfRVn-tQ@powergate.ca>
Message-ID: <d6m60a$dqk$1@solaris.cc.vt.edu>

Peter Hansen wrote:
> rbt wrote:
> 
>> I know how to setup an empty list and loop thru something... appending 
>> to the list on each loop... how does this work with dicts?
>>
>> I'm looping thru a list of files and I want to put the file's name and 
>> its sha hash into a dict on each loop.
> 
> 
> Whereas with a list you would call "append" in the loop, with a 
> dictionary you simply use an indexed-assignment type of access:
> 
> mydict = {}
> for filename in some_list_of_filenames:
>     hash = sha.sha(open(filename).read()).hexdigest() # or whatever
>     mydict[filename] = hash
> 
> -Peter

Thanks guys... that works great.


From uche.ogbuji at gmail.com  Fri May 20 14:58:08 2005
From: uche.ogbuji at gmail.com (uche.ogbuji at gmail.com)
Date: 20 May 2005 11:58:08 -0700
Subject: Bug in Elementtree/Expat
In-Reply-To: <d6evp7$jak$1@blackmamba.itd.rl.ac.uk>
References: <1116331113.765085.281490@g47g2000cwa.googlegroups.com>
	<mailman.103.1116342265.8733.python-list@python.org>
	<1116343915.036584.32160@g47g2000cwa.googlegroups.com>
	<d6evp7$jak$1@blackmamba.itd.rl.ac.uk>
Message-ID: <1116615488.039752.320840@g44g2000cwa.googlegroups.com>

"""
 > Most examples in the book do not include such a declaration and yet
are
> properly rendered by Internet Explorer.
> Is it mandatory and why is it that Expat crashes on it?

It's not mandatory but it's probably good practice to make the document
self-contained. The xlink prefix is defined in the DTD but Expat, as a
nonvalidating parser, won't fetch it.
"""

Important clarification:

The decision whether or not to read the external DTD subset is separate
from the decision whether or not to validate.  Expat does not validate,
but it does read the external subset, if you tell it to.  There are
other uses for reading the external subset, such as entity resolution.
And you can have validation constructs in the internal DTD subset (IOW
right in the XML source file itself), and expat will not do anything
with them because it does not validate.

This may seem a subtle distinction, but it lies behind a lot of user
confusion in practice.  The XML WG really should have simplified such
matters (IIRC SGML compatability was a big obstruction to doing so).

-- 
Uche
http://uche.ogbuji.net



From peter at engcorp.com  Mon May  2 21:24:39 2005
From: peter at engcorp.com (Peter Hansen)
Date: Mon, 02 May 2005 21:24:39 -0400
Subject: WordPress Python Library 1.0
In-Reply-To: <b1jd715rbgcc9b3eu0538v5ehmldhch4ek@4ax.com>
References: <Rmwde.850131$b5.37722456@news3.tin.it>
	<mailman.49.1115067917.6583.python-list@python.org>
	<VKwde.1322130$35.49403624@news4.tin.it>
	<4276a972.508897235@news.oz.net>
	<b1jd715rbgcc9b3eu0538v5ehmldhch4ek@4ax.com>
Message-ID: <Op-dnecjc7ciT-vfRVn-og@powergate.ca>

John Machin wrote:
> On Mon, 02 May 2005 22:30:55 GMT, bokr at oz.net (Bengt Richter) wrote:
>>Should we expect your "WordPress Python Library 1.0" to do to words
>>what the dry cleaners do to suits and shirts then? ;-)
> 
> or perhaps what feet do to grapes?

Provide a source of yeast to begin the fermentation process?

(Sorry about these: it must be something to do with getting only three 
hours of sleep each of the last two nights. ;-)  )

-Peter


From daniel_usenet at yahoo.de  Mon May 16 15:08:34 2005
From: daniel_usenet at yahoo.de (Daniel Lichtenberger)
Date: Mon, 16 May 2005 21:08:34 +0200
Subject: mod_python and logging
References: <3eoorhF46dasU1@individual.net>
	<mailman.48.1116256936.8733.python-list@python.org>
Message-ID: <3es9diF4mhcoU1@individual.net>

Hi!

Vinay Sajip wrote:

> If you want to have multiple processes logging to the same file, the
> standard Python logging module does not support interprocess
> synchronisation directly. However, it is fairly easy to set up the
> processes to log events to a socket, and a socket receiver can log
> received events to file. The online docs have an example socket
> receiver:
> 
> http://docs.python.org/lib/network-logging.html

Thanks for the suggestion! Of course it's great to have a powerful and
flexible logging package, and it's still pretty easy to use. 

Daniel

-- 
For mail replies please use my address from 
http://perplex.schmumpf.de/
http://www.gametective.de/


From sjmachin at lexicon.net  Thu May 19 00:09:32 2005
From: sjmachin at lexicon.net (John Machin)
Date: Thu, 19 May 2005 14:09:32 +1000
Subject: Comparing 2 similar strings?
References: <24a6d$428b9c10$d1b717f8$2300@PRIMUS.CA>
	<428BA05D.1010600@lsupcaemnt.com>
	<3d9n815cpmavos1fl6ts712h9qogdv3fur@4ax.com>
	<tOydnZJPi5FmeBbfRVn-3A@comcast.com>
	<ukqn811uo3qaa5lpihfq1fu71auuslel10@4ax.com>
	<wOSdnW21Bo1qlBHfRVn-uQ@comcast.com>
Message-ID: <153o811mt7uhqa3aojb5101sd7qo4jrgps@4ax.com>

On Wed, 18 May 2005 22:37:21 -0500, Ed Morton <morton at lsupcaemnt.com>
wrote:

>
>
>John Machin wrote:
>
>> On Wed, 18 May 2005 20:03:53 -0500, Ed Morton <morton at lsupcaemnt.com>
>> wrote:
><snip>
>>>I assume you were actually being facetious
>>>and trying to make the point 
>>>that names that don't look the same on paper can have the same soundex 
>>>encoding and that's obviously countered with the fact that soundex is 
>>>just a cheap and cheerful way to find names that probably sound similair 
>>>which can vary tremendously based on ethnicity or accent.
>> 
>> 
>> *If* you want phonetic similarity, there are methods that much better
>> than soundex, in the sense of fewer false positives and fewer false
>> negatives. Google for NYSIIS, dolby, metaphone, caverphone.
>
>And I assume I'd find they all have pros and cons too, otherwise you'd 
>be referring to THE best one rather than a selection.

*ALL* approximate matching methods have pros and cons -- and all
others have fewer than soundex.

> It seems a bit 
>pointless to go browsing through the documentation on them when someone 
>who presumably already has can't just state the best one for the job.

They were listed in roughly increasing order of general rough
effectiveness. It depends on the job. It depends on the language. None
of them would work well with your O Muirchaitaeioughs :-)

>
>> Cheap? You get what you pay for.
>> 
>> Cheerful? What's the relevance?
>
>"Cheap and cheerful" is a colloquial expression meaning cost-effective.

Grossly misapplied to soundex.

>
>> Someone who types "Mousaferiadis" into a customer search screen and
>> gets back several lines of McPherson and MacPherson is unlikely to be
>> cheerful -- even before we factor in the speed [soundex divides the
>> universe into a relative small number of buckets].
>> 
>> Someone who's looking for Erin when they should be looking for Aaron
>> (or vice versa) won't get much cheer out of soundex, either.
>
>That goes back to accent. In [some parts at least of] the USA Erin 
>sounds very much like Aaron wheras in the UK the 2 are very dissimilar. 
>I assume since you apparently consider them similair that you live in 
>the USA

You assume incorrectly. In any case my whereabouts are of sublime
irrelevance. What matters is that some people will as you say think
that Aaron and Erin sound similar in the best of circumstances; they
are prone to be mistaken one for the other by (say) a tired call
centre operative especially when the caller and the callee are from
different backgrounds.

> and so would consider soundex as providing a "false negative" by 
>saying they don't match. Perhaps one of the other approaches you suggest 
>would report that they do match but that wouldn't make it clearly a 
>better choice to everyone.

None of the other approaches make the mistake of preserving the first
letter -- this alone is almost enough reason for jettisoning soundex.




From peter at engcorp.com  Fri May 27 18:29:59 2005
From: peter at engcorp.com (Peter Hansen)
Date: Fri, 27 May 2005 18:29:59 -0400
Subject: write to the same file from multiple processes at the same time?
In-Reply-To: <ytSdnaFbdrq5BArfRVn-ig@powergate.ca>
References: <e3617$429713d7$3eb01f24$9096@news.flashnewsgroups.com>
	<roy-29C1D4.09142527052005@reader1.panix.com>
	<XOqdnU5dNq_vgwrfRVn-rg@powergate.ca>
	<119ecss4o7co9ef@corp.supernews.com>
	<ytSdnaFbdrq5BArfRVn-ig@powergate.ca>
Message-ID: <H4Odneao5tThAgrfRVn-gg@powergate.ca>

Peter Hansen wrote:
> Grant Edwards wrote:
>> Not in my experience.  At least under Unix, it's perfectly OK
>> to open a file while somebody else is writing to it.  Perhaps
>> Windows can't deal with that situation?
> 
> Hmm... just tried it: you're right!  

Umm... the part you were right about was NOT the possibility that 
Windows can't deal with the situation, but the suggestion that it might 
actually be able to (since apparently it can).  Sorry to confuse.

-Peter


From ccurvey at gmail.com  Wed May 11 15:08:42 2005
From: ccurvey at gmail.com (Chris Curvey)
Date: 11 May 2005 12:08:42 -0700
Subject: win32com and ADO
In-Reply-To: <d5tk41$ae3$02$1@news.t-online.com>
References: <1115833669.142021.294080@g44g2000cwa.googlegroups.com>
	<d5tk41$ae3$02$1@news.t-online.com>
Message-ID: <1115838522.077741.140940@o13g2000cwo.googlegroups.com>

Achim,

Bingo.  The recordset is in item 0.  And that appears to work even on
systems where makepy has not been run.

Thanks so much.



From greg at invalid.invalid  Thu May 12 17:43:46 2005
From: greg at invalid.invalid (Greg Krohn)
Date: Thu, 12 May 2005 21:43:46 GMT
Subject: Launch file in Notepad
In-Reply-To: <42835db6$0$1334$5fc3050@dreader2.news.tiscali.nl>
References: <42835db6$0$1334$5fc3050@dreader2.news.tiscali.nl>
Message-ID: <m6Qge.5956$r7.4011@newsread1.news.pas.earthlink.net>

George wrote:
> Newbie question:
> 
> I'm trying to lauch Notepad from Python to open a textfile:
> 
> import os
> b1="c:\test.txt"
> os.system('notepad.exe ' + b1)
> 
> However, the t of test is escaped by the \, resulting in Notepad trying 
> to open "c: est.txt".
> 
> How do I solve this?
> 
> (By the way, b1 comes from a command line parameter, so the user enters 
> c:\test.txt as command line parameter.)
> 
> George

The \t will only be interpreted as TAB if it was entered as part of
your python code. If the \t was entered as a command line arg it will
be interpreted as a \ and a t. For example:


#test.py
import sys
b1 = sys.argv[1]
b2 = "C:\test.txt"
print b1
print b2

will result in this:

C:\>test.py C:\test.txt
C:\test.txt
C:      est.txt


-greg


From saravanan.d at siemens.com  Fri May 27 01:27:28 2005
From: saravanan.d at siemens.com (Saravanan D)
Date: Fri, 27 May 2005 10:57:28 +0530
Subject: Lanunching Process from Python Script
Message-ID: <d76b42$alf$2@news.mch.sbs.de>

Hello,

In windows, I am launching Python process to execute python script in the
back ground.  This Python script which internally launches another windows
exe. Here, how do I redirect output of windows.exe to caller process.
(python.exe).
I would appreciate, if any one provides sample code for the same.



thanks.

saravanan




From brokenclock at free.fr  Mon May  2 10:05:13 2005
From: brokenclock at free.fr (BrokenClock)
Date: Mon, 02 May 2005 16:05:13 +0200
Subject: pop3proxy 
Message-ID: <4276329a$0$289$636a15ce@news.free.fr>

Hello every body,

Here is a python newbie! I've choose it to make a pop3 proxy - I want to 
filter content between a pop3 client and a pop3 server, and I have no 
control on the server...
First, I wanted to do an non-filtering, just logging, mono-thread proxy 
to make some test..
Based on the RFC 1939 (http://www.faqs.org/rfcs/rfc1939.html) (in 
particular the item 5), I was expecting some output, but did not get it...
In fact, I expected to see the message, but I did not see it... only the 
  command to retrieve it. On the other hand, the message is well receipt 
in my mail client.
An other point is that all this seems to work well with short messages, 
but difficulties appear when messages go bigger. I think it is due to 
the parameter of recv, but I don't know how to set it.
So here are my two questions:
1-why do not I see the message in my output, and how could I do to see 
and handle it?
2-how should I set the parameter of recv to handle big messages?

Any help would we very appreciate.

Cheers,

Brokenclock

Here is the code:
 >
import socket

LOCALHOST = '192.168.31.202'		# This is me
REMOTEHOST = 'pop.fr.oleane.com'	# The remote host
PORT = 110				# pop3 port
while 1:
	SocketServer = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
	SocketServer.bind((LOCALHOST, PORT))
	SocketServer.listen(1)
	Connexion2Client, ClientAddress = SocketServer.accept()
	print '#', ClientAddress,' connected'
	ClientSocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
	ClientSocket.connect((REMOTEHOST, PORT))
	print '#', REMOTEHOST, ' connected'
	while 1:
		DataFromServer = ClientSocket.recv(5896230)
		print REMOTEHOST,'> ',DataFromServer
		Connexion2Client.send(DataFromServer)
		DataFromClient = Connexion2Client.recv(5896230)
		print ClientAddress,'> ',DataFromClient
		if DataFromClient==" QUIT": print 'QUIT received from client'
		ClientSocket.send(DataFromClient)
		if not DataFromClient: break
	ClientSocket.close()
	Connexion2Client.close()
 >eof


Here the output:
 >
C:/Python24/pythonw.exe -u  "C:/Python24/Scripts/pop3proxy3.py"
# ('192.168.31.202', 2345)  connected
# pop.fr.oleane.com  connected
pop.fr.oleane.com >  +OK pop1.clb.oleane.net POP3 Oleane Mail Server Ready

('192.168.31.202', 2345) >  CAPA

pop.fr.oleane.com >  +OK Capability list follows
TOP
USER
RESP-CODES
AUTH-RESP-CODE
PIPELINING
UIDL
IMPLEMENTATION omail-1.3.1
.

('192.168.31.202', 2345) >  USER Mondia-26 at wincanto.fr.fto

pop.fr.oleane.com >  +OK User name accepted, password please
Username

('192.168.31.202', 2345) >  PASS password

pop.fr.oleane.com >  +OK 1 messages (1631 octets)

('192.168.31.202', 2345) >  STAT

pop.fr.oleane.com >  +OK 1 1631

('192.168.31.202', 2345) >  LIST

pop.fr.oleane.com >  +OK 1 messages (1631 octets)
1 1631
.

('192.168.31.202', 2345) >  UIDL

pop.fr.oleane.com >  +OK Unique-ID listing follows
1 42762947a48018100000065f
.

('192.168.31.202', 2345) >  RETR 1

pop.fr.oleane.com >  +OK pop1.clb.oleane.net chpounz the connection. 
Have a nice day!

('192.168.31.202', 2345) >
 >eof


From timothy at open-networks.net  Tue May 10 03:21:30 2005
From: timothy at open-networks.net (Timothy Smith)
Date: Tue, 10 May 2005 17:21:30 +1000
Subject: sync dir's
In-Reply-To: <d5plm4$fq$1@sea.gmane.org>
References: <428043D7.8030203@open-networks.net> <d5plm4$fq$1@sea.gmane.org>
Message-ID: <428060FA.8070207@open-networks.net>

Fredrik Lundh wrote:

>Timothy Smith wrote:
>
>  
>
>>what would be the best tool to use to sync my local dir with a remote
>>one, say off a http resorce (although i'm open to other options there) i
>>    
>>
>
>rsync?  wget --mirror?
>
></F>
>
>
>
>  
>
i need something which has a python library, so far i haven't seen 
anything like that for rsync. i'll check out the others but


From mal at lemburg.com  Sun May 15 08:01:52 2005
From: mal at lemburg.com (mal at lemburg.com)
Date: Sun, 15 May 2005 12:01:52 GMT
Subject: Schily ueber Deutschland
Message-ID: <e1bf4ea9d3dbf12e7@lemburg.com>

Lese selbst:
http://www.heise.de/newsticker/meldung/59427


From lsumnler at gmail.com  Thu May 19 09:59:34 2005
From: lsumnler at gmail.com (len)
Date: 19 May 2005 06:59:34 -0700
Subject: newbie file/DB processing
In-Reply-To: <86psvn3cc8.fsf@guru.mired.org>
References: <1116445969.381550.99280@f14g2000cwb.googlegroups.com>
	<86psvn3cc8.fsf@guru.mired.org>
Message-ID: <1116511174.396392.292760@f14g2000cwb.googlegroups.com>

Thanks for the reply

I think you might be right.  I have been playing around with Linux at
home.  What I may have to do in switch my mindset from IBM/Microsoft to
a more Unix way of thinking.

Also thanks for the code samples.

Len Sumnler



From peter at monicol.co.uk  Tue May 24 12:50:38 2005
From: peter at monicol.co.uk (Peter)
Date: 24 May 2005 09:50:38 -0700
Subject: reference counting and file objects
In-Reply-To: <428a40e1$0$29930$9b622d9e@news.freenet.de>
References: <slrnd8kf7b.40a.jtr@ofb.net><7xoeb94r3j.fsf@ruckus.brouhaha.com>
	<428a40e1$0$29930$9b622d9e@news.freenet.de>
Message-ID: <1116953438.844243.32800@f14g2000cwb.googlegroups.com>


Martin v. L?wis wrote:
> Paul Rubin wrote:
> >>Consider the function above.  Do I need the fp.close(), or will the
> >>file be closed automatically when fp goes out of scope and its
> >>reference count drops to zero?
> >
> > In CPython, fp gets closed when it leaves scope.
>
> One issue is that when the function terminates through an exception,
> the file stays open as long as the traceback is available, which
> exists until the next exception is raised (and thus replaces this
> traceback).
>
> If the function terminates normally (i.e. through return), it is
> as you say.
>
> Regards,
> Martin

Does the idiom:

lines = file("myfile","r").readlines()

have any better guarantee of being closed automatically? 

Peter



From swaroopch at gmail.com  Wed May 11 02:46:52 2005
From: swaroopch at gmail.com (Swaroop C H)
Date: Wed, 11 May 2005 12:16:52 +0530
Subject: Pipes of binaries - IPC::Run
Message-ID: <351e8871050510234645fd8c81@mail.gmail.com>

Is there a Python equivalent of Perl's IPC::Run module [
http://search.cpan.org/dist/IPC-Run/lib/IPC/Run.pm ] ?

Thanks!
-- 
Swaroop C H
Blog: http://www.swaroopch.info
Book: http://www.byteofpython.info


From facundobatista at gmail.com  Sun May 15 23:28:04 2005
From: facundobatista at gmail.com (Facundo Batista)
Date: Mon, 16 May 2005 00:28:04 -0300
Subject: Precision?
In-Reply-To: <428807CB.1070300@ronadam.com>
References: <1116165159.269252.117830@g14g2000cwa.googlegroups.com>
	<4287565c$0$24223$636a15ce@news.free.fr>
	<4287A237.7090000@ronadam.com> <428807CB.1070300@ronadam.com>
Message-ID: <e04bdf3105051520283eff11b7@mail.gmail.com>

On 5/15/05, Ron Adam <rrr at ronadam.com> wrote:


>  >>> x
> 3200001.6000000001
> 
> Here the error has been kept to a minimum.  In most cases, it isn't a
> problem, but it is something to be aware of.  It does matter in banking
> and I beleive there are standard ways of dealing with it.

Yes, use Decimal:

    http://docs.python.org/lib/module-decimal.html

Remember that you can also use it in Python 2.3.x:

    http://www.taniquetil.com.ar/facundo/bdvfiles/get_decimal.html

.    Facundo

Blog: http://www.taniquetil.com.ar/plog/
PyAr: http://www.python.org/ar/


From martin at v.loewis.de  Sat May  7 09:54:57 2005
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Sat, 07 May 2005 15:54:57 +0200
Subject: Q: The `print' statement over Unicode
In-Reply-To: <mailman.135.1115467276.29826.python-list@python.org>
References: <mailman.6.1115221576.29826.python-list@python.org>	<acnbm18i.fsf@python.net>
	<mailman.135.1115467276.29826.python-list@python.org>
Message-ID: <427cc8b2$0$26179$9b622d9e@news.freenet.de>

Fran?ois Pinard wrote:
> Am I looking in the wrong places, or else, should not the standard
> documentation more handily explain such things?

It should, but, alas, it doesn't. Contributions are welcome.

The algorithm to set sys.std{in,out}.encoding is in
sysmodule.c:_PySys_Init and pythonrun.c:Py_InitializeEx
and goes roughly as follows:

- On Windows, if isatty returns true, use GetConsoleCP and
  GetConsoleOutputCP.
- On Unix, if isatty returns true, langinfo.h is present,
  CODESET is defined, and nl_langinfo(CODESET) returns a
  non-empty string, use that.
- otherwise, .encoding will not be set.

Regards,
Martin


From km at mrna.tn.nic.in  Wed May  4 08:24:38 2005
From: km at mrna.tn.nic.in (km)
Date: Wed, 4 May 2005 17:54:38 +0530
Subject: OOPS concept
Message-ID: <20050504122438.GA23047@mrna.tn.nic.in>


Hi all,

Is there any good step by step online tutorial on OOPS concepts in python ?
i have checked some on the python.org.__doc__ page but couldnt make much sense.  especially i need help on newstyle classes. 

regards,
KM


From martin.witte at gmail.com  Sat May 28 14:35:14 2005
From: martin.witte at gmail.com (wittempj@hotmail.com)
Date: 28 May 2005 11:35:14 -0700
Subject: Threading questions
In-Reply-To: <mailman.213.1117287469.18027.python-list@python.org>
References: <mailman.213.1117287469.18027.python-list@python.org>
Message-ID: <1117305314.853433.235400@z14g2000cwz.googlegroups.com>

For threading I use usually this recipe as a base:
http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/65448, I think
you can use it for your purpose as well.



From m.boeren at guidance.nl  Fri May 27 09:41:06 2005
From: m.boeren at guidance.nl (Marc Boeren)
Date: Fri, 27 May 2005 15:41:06 +0200
Subject: Strings for a newbie
Message-ID: <0C77C7530EA52A4EBD1C47C80D1D291E17E215@sbs.GuidanceBV.local>


Hi Malcolm,

> It's not the amout of code thats a probelm, it's following the
> logic and structure thats important.
> As I said Python.. UGH!

Do you find 

.. s = "This is a sentence of words"
.. a = s.split(' ')

less readable or logical than 

.. s = "This is a sentence of words"
.. For i = 1 to CountFields(s," ")
..     a.append NthField(s," ",i)
.. next



It seems you actual problem is more in this code you posted:

.. for x in range(len(l)):
..     h = string.split(l[x])

where l[x] does not evaluate to a string and thus it can't be split.
To find the value of l[x], just do 

.. for x in range(len(l)):
..     print l[x]
..     h = string.split(l[x])

and see what the print statement returns.
note that the code from Wolfram makes this a bit more readable:

.. for x in l:
..   print x
..   h = x.split()

Also note that you can play around with stuff like this in the
interactive interpreter, so you are not carrying around the whole of the
program you're writing. This makes experimenting with python a bit
easier as it's a quick way to check how things work. Whenever you see
code on this list that is prepended by >>> it means it is probably
copy/pasted from the interactive interpreter, so you know it actually
works (Johns example):

.. >>>s = "This is a sentence of words"
.. >>>a = s.split()
.. >>>a
.. 
.. ['This', 'is', 'a', 'sentence', 'of', 'words']

Have fun, Marc.



From kosh at aesaeion.com  Sat May 21 05:46:20 2005
From: kosh at aesaeion.com (William Heymann)
Date: Sat, 21 May 2005 03:46:20 -0600
Subject: moving from c++ to python
In-Reply-To: <d6mufo$o8v$1@nwrdmz03.dmz.ncs.ea.ibs-infra.bt.com>
References: <d6mufo$o8v$1@nwrdmz03.dmz.ncs.ea.ibs-infra.bt.com>
Message-ID: <200505210346.20300.kosh@aesaeion.com>

On Saturday 21 May 2005 03:19 am, Michael wrote:

Yeah this tutorial is aimed at people that already know how to program.

http://www.diveintopython.org/

It would still be a good idea though to go through the basic python tutorial 
at  http://docs.python.org/tut/tut.html  

For someone already experienced in programming the basic tutorial will 
probably only take an hour or so and it is good to read it at least once. The 
other thing I highly recommend is reading  
http://docs.python.org/lib/lib.html  just to see what libraries python has 
and a basic idea of what they can do. I have seen a LOT of programmers come 
from languages like c++ and spend days and sometimes hundreds of lines of 
code implementing something that could be done with a single line of code 
from the standard library. :)  Just trying to save you from that problem.

> Hi,
> I'm a pretty sound programmer in C++, but would like to learn python! Does
> anyone know of any tutorial s aimed at me?? My biggest confusion so far is
> the lack of pointers in Python ......
> Regards
>
>
> Michael


From simon.brunning at gmail.com  Tue May 31 06:40:05 2005
From: simon.brunning at gmail.com (Simon Brunning)
Date: Tue, 31 May 2005 11:40:05 +0100
Subject: scripting browsers from Python
In-Reply-To: <1117525953.255166.234420@g14g2000cwa.googlegroups.com>
References: <1117525953.255166.234420@g14g2000cwa.googlegroups.com>
Message-ID: <8c7f10c605053103405645f3d6@mail.gmail.com>

On 31 May 2005 00:52:33 -0700, Michele Simionato
<michele.simionato at gmail.com> wrote:
> I would like to know what is available for scripting browsers from
> Python.
> For instance, webbrowser.open let me to perform GET requests, but I
> would like
> to do POST requests too. I don't want to use urllib to emulate a
> browser, I am
> interested in checking that browser X really works as intended with my
> application. Any suggestion?

I don't know of anything cross platform, or even cross browser, but on
Windows, IE can be automated via COM - see
<http://www.mayukhbose.com/python/IEC/> for example - and other
browsers should be able to be automated either via COM or by driving
the GUI with WATSUP (<http://www.tizmoi.net/watsup/intro.html>).

-- 
Cheers,
Simon B,
simon at brunningonline.net,
http://www.brunningonline.net/simon/blog/


From maxume at yahoo.com  Tue May 31 14:09:52 2005
From: maxume at yahoo.com (max)
Date: Tue, 31 May 2005 18:09:52 -0000
Subject: anygui,anydb, any opinions?
References: <Xns9667883C1D343jreeder@63.223.7.253>
Message-ID: <Xns96679040ABCDDnotrealmail@216.168.3.44>

rzed <jello at comics.com> wrote in news:Xns9667883C1D343jreeder@
63.223.7.253:

> So what do you think? What's wrong with the picture? Why isn't 
> there a greater priority to work in this direction?
> 

Without giving any reasons beyond intuition, I would have to say that 
it boils down to 2 things: The size and scope of gui and database 
frameworks, and the fact that opinions differ about what is 'ideal'.

max


From Wayne.D.Irvine at BHPBilliton.com  Mon May 16 00:28:43 2005
From: Wayne.D.Irvine at BHPBilliton.com (Irvine, Wayne D)
Date: Sun, 15 May 2005 23:28:43 -0500
Subject: Column data with first value from each row as key?
Message-ID: <55B245050A9AD61192140002A544108B0278A2DF@melclapub01.corpmel.bhp.com.au>

Hi All,

I have a file of column data where the first row/line of the file
contains the column headings. These I need to use as keys. Furthermore I
need to be able to use the first value from each of the data rows/lines
as a secondary key. This first column is called LineNumber and the rest
of the columns of which there are 400+ I will call data columns. So what
I am wanting to do is read the file which is tab-delimited (I can do
this alright) and then be able to do things such as select all values
from the data columns where LineNumber = xxxxx. I assume I want to use
lists but I am unsure how to achieve the above. I have found the
following example which seems to partly do this but it only seems to
read the first line of my input file. And I can't see how to reference
my LineNumbers by their respective value.

### Start of code ###
import  UserDict
class SeqDict(UserDict.DictMixin):
    """Dictionary lookalike implemented with lists."""
    def __init__(self):
        self.keylist = []
        self.valuelist = []
    def __getitem__(self, key):
        try:
            i = self.keylist.index(key)
        except ValueError:
            raise KeyError
        return self.valuelist[i]
    def __setitem__(self, key, value):
        try:
            i = self.keylist.index(key)
            self.valuelist[i] = value
        except ValueError:
            self.keylist.append(key)
            self.valuelist.append(value)
    def __delitem__(self, key):
        try:
            i = self.keylist.index(key)
        except ValueError:
            raise KeyError
        self.keylist.pop(i)
        self.valuelist.pop(i)
    def keys(self):
        return list(self.keylist)

# Now, read a comma-delimited file into the dictionary
def readfile():
    mydict = SeqDict()
# NOTE - enter the path and filename WITHOUT quotes around it.
    filename = raw_input('Enter name of file to open: ')
    file = open(filename, 'r')
    linenum=0
    for line in file.readlines():
        linenum+=1
        mywords = string.split(line, sep='\t')

        for word in mywords:
            if linenum == 1:
# First row of data: the dictionary keys
                mydict.keylist.append(word)
#                    mydict.valuelist.append([])
            else:
# The rest of the data
                mydict.valuelist.append(word)
    for key, value in mydict.iteritems():
        print key, value
        

if __name__ == '__main__':
    readfile()
### End of code ###

Cheers,
Wayne 
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From http  Sat May 28 16:26:51 2005
From: http (Paul Rubin)
Date: 28 May 2005 13:26:51 -0700
Subject: Help with choice of suitable Architecture
References: <1117299643.380598.5540@g47g2000cwa.googlegroups.com>
	<mailman.221.1117304620.18027.python-list@python.org>
	<atgh91hlophgsuio8qctrht31q03mght4b@4ax.com>
	<1117311160.307176.216430@o13g2000cwo.googlegroups.com>
Message-ID: <7xr7frm704.fsf@ruckus.brouhaha.com>

"Rob Cowie" <cowie.rob at gmail.com> writes:
> Paul..... I agree that client-side scripting increases the level of
> compexity, but did it really go out of fashion with pop-ups? It seems
> to be just getting started.

Pop-ups and scripting-related security holes are why the cool kids all
surf with Javascript turned off.  Who cares about what Joe Sixpack is
doing?  ;-)

Anyway, don't increase complexity without a good reason.

> Google use it to great effect.... maps, suggest etc. I wasn't
> thinking of using it to deal with any 'business logic',

There is some case to be made that the Google maps interface presents
concrete good reasons to use scripting, falling into the "concrete
good reason" exception.  I dunno about "suggest".  I do see that
Google Groups uses scripting in an unnecessary and obnoxious way, just
like most other uses of scripting.  You're doing a text-only service
so you shouldn't even depend on graphics being available in the
browser (your system is IMO defective it doesn't work properly with
Lynx).

> just to add some dynamism to the interface - use XMLhttprequests, a
> bit of DOM scripting etc.

That's sort of vague.  A concrete good reason means a specific set of
benefits you can provide to the user with scripting that you can't
provide without scripting.

See also: http://www.anybrowser.org


From bokr at oz.net  Thu May 12 21:11:11 2005
From: bokr at oz.net (Bengt Richter)
Date: Fri, 13 May 2005 01:11:11 GMT
Subject: How to find the classname of an object? (was Python Documentation)
References: <mailman.503.1115940149.29826.python-list@python.org>
	<hGRge.14335$941.9700@trnddc08>
Message-ID: <4283fda8.18221170@news.oz.net>

On Thu, 12 May 2005 23:30:21 GMT, Farshid Lashkari <lashkariNO at SPAMworldviz.com> wrote:

>This will get the name of an objects class
>
>obj.__class__.__name__
>
>This will return a tuple of its base classes
>
>obj.__class__.__bases__

But not all base classes that it inherits from, e.g.,

 >>> class C(object): pass
 ...
 >>> class B1(C): pass
 ...
 >>> class B2(C): pass
 ...
 >>> class A(B1, B2): pass
 ...
 >>> obj = A()
 >>> obj.__class__.__name__
 'A'
 >>> obj.__class__.__bases__
 (<class '__main__.B1'>, <class '__main__.B2'>)

 >>> type(obj)
 <class '__main__.A'>
 >>> type(obj).mro()
 [<class '__main__.A'>, <class '__main__.B1'>, <class '__main__.B2'>, <class '__main__.C'>, <type 'object'>]
 >>> tuple(x.__name__ for x in type(obj).mro())
 ('A', 'B1', 'B2', 'C', 'object')



>
>Christopher J. Bottaro wrote:
>> I actually want all the parent classes too.  So if D derives off C derives
>> off B derives off A, I ultimately want a tuple ('D', 'C', 'B', 'A').
>> 
>> For those of you following the Python Documentation thread, this is a good
>> example of how the PHP manual is "better".  I found how to do this in a few
>> seconds in PHP.  I searched the Python docs for "class name", "classname",
>> "introspection" and "getclass".  I looked in the Class section of the
>> tutorial also and also the Programming FAQ.  The "related functions"
>> section of the PHP manual is really helpful.  It would be cool if in the
>> section for the built-in function isinstance() or issubclass() there is a
>> section for "related functions" that would point me to getclassname(obj)
>> (if it exists).
>> 
>> Thanks for the help.
>> 
>> -- C
>> 

Regards,
Bengt Richter


From ml at dynkin.com  Fri May  6 05:12:25 2005
From: ml at dynkin.com (George Yoshida)
Date: Fri, 06 May 2005 18:12:25 +0900
Subject: RFC 2822 format date printing function in python
In-Reply-To: <mailman.87.1115367559.29826.python-list@python.org>
References: <mailman.87.1115367559.29826.python-list@python.org>
Message-ID: <d5fcdb$1ptp$1@dojima-n0.hi-ho.ne.jp>

praba kar wrote:

 >    In Php we can print RFC 2822 formatted date by
 > date('r') with parameter r.  Then it will print the
 > below format date.
 > "Thu,  7 Apr 2005 01:46:36 -0300".
 > I want to print same RFC 2822 format in python. Is it
 > possible in python? . If possible kindly mention the
 > function related to print RFC format date
 >

Not as simple as PHP, but of course it's possible :-)

 >>> from email.Utils import formatdate
 >>> formatdate(localtime=True)
'Fri, 06 May 2005 18:00:20 +0900'

  http://docs.python.org/lib/module-email.Utils.html

If you want to do the same thing with time module, you need a few
more lines to calcualate the timezone.

quote from footnote:

   Note that the sign of the timezone offset is the opposite of the
   sign of the time.timezone variable for the same timezone; the
   latter variable follows the POSIX standard while this module
   follows RFC 2822.


  http://docs.python.org/lib/module-time.html

-- 
george
http://www.dynkin.com/


From edvard+news at majakari.net  Thu May 12 03:48:21 2005
From: edvard+news at majakari.net (Edvard Majakari)
Date: Thu, 12 May 2005 10:48:21 +0300
Subject: Unique Elements in a List
References: <1115676903.432187.294910@z14g2000cwz.googlegroups.com>
	<mailman.241.1115681580.29826.python-list@python.org>
	<87psvzikjk.fsf@titan.staselog.com> <d5qu8p$2iq$1@panix2.panix.com>
Message-ID: <87mzr0evga.fsf@titan.staselog.com>

aahz at pythoncraft.com (Aahz) writes:

>>[x for x in data if data.count(x) == 1]
>>
>>suffice? it is also "stable"  preserving order of items. Lemme demo:
>
> Only for small datasets -- this is an O(N^2) algorithm.

I realized that, but maybe I should've pointed it out too. For the OP if
he/she is unaware - notation O(N^2) (big O n squared) means the computing time
of the algorithm increases exponentially (where exponent is 2) relative to the
size of the input.

Eg. if the input size is i and it takes p seconds to compute it, then given
input size 10*i, the computing time would be 100*p. These notions can apply
for memory usage as well, but the problem in here is the computing time:
list.count() must iterate through the list each time, and as such the loop

[x for x in data if data.count(x) == 1]

iterates through each item in data (x for x in data), and for each item it
will again iterate through each item in data to see how many times it
occurred. If data contains 200 items, this idiom would iterate the structure
40 000 times. With today's computers one wouldn't notice it, unless each item
requires heavy processing (eg. launching a separate process per item
etc). However, if the length of the data can be thousands or even tens of
thousands, this idiom would become unusable. If data contained 75 000 items,
the loop would do 25 625 000 000 iterations, effectively bringing cpu to
halt..

So, generally one should avoid using exponential O(n^k) (where k > 1)
algorithms, unless faster O(n) or O(n*lg(n)) solution is either impossible (or
too complex, and inputs are known to be small etc).

Wikipedia has good resources and pointers to related things, see
http://en.wikipedia.org/wiki/Analysis_of_algorithms

-- 
#!/usr/bin/perl -w
$h={23,69,28,'6e',2,64,3,76,7,20,13,61,8,'4d',24,73,10,'6a',12,'6b',21,68,14,
72,16,'2c',17,20,9,61,11,61,25,74,4,61,1,45,29,20,5,72,18,61,15,69,20,43,26,
69,19,20,6,64,27,61,22,72};$_=join'',map{chr hex $h->{$_}}sort{$a<=>$b}
keys%$h;m/(\w).*\s(\w+)/x;$_.=uc substr(crypt(join('',60,28,14,49),join'',
map{lc}($1,substr $2,4,1)),2,4)."\n"; print;


From tiissa at nonfree.fr  Sun May 15 10:02:06 2005
From: tiissa at nonfree.fr (tiissa)
Date: Sun, 15 May 2005 16:02:06 +0200
Subject: Precision?
In-Reply-To: <1116165159.269252.117830@g14g2000cwa.googlegroups.com>
References: <1116165159.269252.117830@g14g2000cwa.googlegroups.com>
Message-ID: <4287565c$0$24223$636a15ce@news.free.fr>

Steffen Gl?ckselig wrote:
>>>>1.0 + 3.0 + 4.6
> 
> 8.5999999999999996
> 
> Ehm, how could I get the intuitively 'correct' result of - say - 8.6?
> ;-)

You may find annex B of the python tutorial an interesting read:
http://docs.python.org/tut/node16.html


From dalke at dalkescientific.com  Mon May 16 15:32:05 2005
From: dalke at dalkescientific.com (Andrew Dalke)
Date: Mon, 16 May 2005 19:32:05 GMT
Subject: Newbie : checking semantics
References: <1115503520.392357.230620@f14g2000cwb.googlegroups.com>
	<87d5rrsh7h.fsf@snobis.de>
	<pan.2005.05.16.13.58.07.671337@dalkescientific.com>
	<87fywnuny3.fsf@snobis.de>
Message-ID: <pan.2005.05.16.19.32.03.664971@dalkescientific.com>

Stefan Nobis wrote:
> From time to time I teach some programming (in an institution
> called "Volkshochschule" here in Germany -- inexpensive courses
> for adults). My Python course is for absolute beginners with no
> previous programming experience of any kind.

I also taught a beginning programming course.   I found that
the hard thing was learning the concept of an algorithm.  I
don't recall people getting confused over the indentation part
that much.

Python's block indentation is derived from ABC.  ABC did various
human factors studies to test how to make a language easier to
use by beginning programmers.  Combining that with my own experience
both using and teaching the language make me distrustful of anyone
else's evidence based only on anecdotal accounts.

Leaving out the easy of learning aspect, there are two other
reasons for the indentation:
  http://python.fyxm.net/doc/essays/foreword.html

] Perhaps Python's most controversial feature is its use of indentation
] for statement grouping, which derives directly from ABC. It is one of
] the language's features that is dearest to my heart. It makes Python
] code more readable in two ways. First, the use of indentation reduces
] visual clutter and makes programs shorter, thus reducing the attention
] span needed to take in a basic unit of code. Second, it allows the
] programmer less freedom in formatting, thereby enabling a more uniform
] style, which makes it easier to read someone else's code. 


> So I would appreciate optional statements to end a block
> (indentation rules may be mandatory). This comes also very handy
> in something like Python Server Pages of mod_python (where a
> comment line to explicitly end a block is sometimes needed).

See the program "pindent.py" in the Python distribution under
Tools/scripts

# This file contains a class and a main program that perform three
# related (though complimentary) formatting operations on Python
# programs.  When called as "pindent -c", it takes a valid Python
# program as input and outputs a version augmented with block-closing
# comments.  When called as "pindent -d", it assumes its input is a
# Python program with block-closing comments and outputs a commentless
# version.   When called as "pindent -r" it assumes its input is a
# Python program with block-closing comments but with its indentation
# messed up, and outputs a properly indented version.

# A "block-closing comment" is a comment of the form '# end <keyword>'
# where <keyword> is the keyword that opened the block.  If the
# opening keyword is 'def' or 'class', the function or class name may
# be repeated in the block-closing comment as well.  Here is an
# example of a program fully augmented with block-closing comments:

# def foobar(a, b):
#    if a == b:
#        a = a+1
#    elif a < b:
#        b = b-1
#        if b > a: a = a-1
#        # end if
#    else:
#        print 'oops!'
#    # end if
# # end def foobar

				Andrew
				dalke at dalkescientific.com



From Serge.Orlov at gmail.com  Tue May 17 11:11:28 2005
From: Serge.Orlov at gmail.com (Serge Orlov)
Date: 17 May 2005 08:11:28 -0700
Subject: Windows distribution suggestions?
In-Reply-To: <mailman.89.1116328782.8733.python-list@python.org>
References: <7x3bsmfjdg.fsf_-_@ruckus.brouhaha.com>
	<7xekc6p9tp.fsf@ruckus.brouhaha.com>
	<4289ACD8.2070207@open-networks.net>
	<mailman.87.1116322349.8733.python-list@python.org>
	<7x8y2ep1cw.fsf@ruckus.brouhaha.com> <d6cj3e$19r$1@bagan.srce.hr>
	<mailman.89.1116328782.8733.python-list@python.org>
Message-ID: <1116342688.726445.45760@o13g2000cwo.googlegroups.com>


Timothy Smith wrote:
> Ivan Voras wrote:
>
> >Paul Rubin wrote:
> >
> >
> >
> >>>your active code is then in some library.zip shared between the
> >>>three, and you need never change alice.exe, bob.exe, and carol.exe
> >>>
> >>>
> >>I think I understand what you're saying and it sounds like a very
> >>good idea.  Thanks.
> >>
> >>
> >
> >One thing about updating files - sorry if I'm stating general and
> >universal knowledge, but beware that on Windows you can't delete
and/or
> >replace a file if it's opened by any process.
> >
> >
> hence i found you must do this immediately after updating
>
> sys.path_importer_cache.clear()
> zipimport._zip_directory_cache.clear()
>
> then unload your app

I don't think it's a good idea to update files of a running
application. It's better to copy the current version into
another directory and after successful update switch over
to the new version.

Dirs during update:
c:\program files\mysoftware\current
c:\program files\mysoftware\latest

post update
c:\program files\mysoftware\previous
c:\program files\mysoftware\current

The advantage of the approach of keeping the previous version
is that your customers can always switch back to the previous
version even if the network is not available or your update
server is down. It's like an undo button. If the users know that
they can easily downgrade, they will more willing to upgrade.

  Serge.



From im at home.com  Sat May 14 23:12:21 2005
From: im at home.com (Bubba)
Date: Sat, 14 May 2005 23:12:21 -0400
Subject: Jesus said, "I am the way,
	the truth and the life: no one can come to the Father(God)(in Heaven),
	but by me." (John 14:6) This means that if you die without trusting in
	Jesus Christ as your Lord and Saviour you will die in your sins
	and be forever sepa
References: <1116096706.696830.275140@g44g2000cwa.googlegroups.com>
	<Etvhe.1353573$8l.349001@pd7tw1no>
Message-ID: <wemdnVcXpcOIIxvfRVn-tQ@comcast.com>

I'm so glad you've decided what everyone believes....

"don freeman" <dfreem3 at nospam.shaw.ca> wrote in message
news:Etvhe.1353573$8l.349001 at pd7tw1no...
>
>
> > http://www.gotquestions.org/sinners-prayer.html << I saw this site on a
> > search directory. Great Resource!
> >
>
>
> C'mon, this is the 21st century. Nobody believes that silly story about
> God having a son anymore.
>
> Think about it. The original story is always the best. The sequel is
> always a commercial rip-off. Frankenstein was literature. Son of
> Frankenstein was silly.
>
> God impregnates a virgin woman and gives birth to a half man/half god,
> who can walk on water and turn water into wine, but who can't defend
> himself very well at all from the Romans. This story may have sold in
> the past, but not now. We've become too sophisticated for this kind of
> fantasy.
>




From sreekanth.hari at gmail.com  Fri May 20 20:11:22 2005
From: sreekanth.hari at gmail.com (sreekanth.hari at gmail.com)
Date: 20 May 2005 17:11:22 -0700
Subject: Parsing bash_history and inputting into mysql (Intrusion Detection)
Message-ID: <1116634282.053448.22680@o13g2000cwo.googlegroups.com>

I have a seemingly tough assignment for my Senior Project. I need to
develop an Intrusion Detection System.

My approach is to parse the bash_history file of each user into a mysql
database, assign a threshold for commands or sequences of commands and
then alert the admin of nethin fishy is found.

My advisor reccomended I use python for writing the scripts.

I am absolutely new to python and have no prior experience in it. That
said

Could any one tell me how exactly to go abt all this?

Any tools or code that would make my life easier?

Suggestions (which modules to use etc) ?

Cheers,

Sreekanth



From dalke at dalkescientific.com  Sun May  1 03:13:28 2005
From: dalke at dalkescientific.com (Andrew Dalke)
Date: Sun, 01 May 2005 07:13:28 GMT
Subject: How do I parse this ? regexp ?
References: <mailman.2587.1114618447.1799.python-list@python.org>
	<1114620387.283743.163460@z14g2000cwz.googlegroups.com>
Message-ID: <pan.2005.05.01.07.13.29.132893@dalkescientific.com>

serpent17 at gmail.com wrote:

> Thank you, it works, but I guess not all the way:

> but I need to remove the first - between 18:20:42 and 0.024329 but not
> the others.

Read the documentation for the string methods.
http://docs.python.org/lib/string-methods.html


  replace(old, new[, count])
    Return a copy of the string with all occurrences of substring old
    replaced by new. If the optional argument count is given, only the
    first count occurrences are replaced.

in your case

   x = x.replace('-',' ', 1)

				Andrew
				dalke at dalkescientific.com



From Please  Fri May  6 14:29:02 2005
From: Please (Please)
Date: 6 May 2005 13:29:02 -0500
Subject: =?ISO-8859-1?Q?Good_morning_or_goo?=
	=?ISO-8859-1?Q?d_evening_depending?=
	=?ISO-8859-1?Q?_upon_your_location?=
	=?ISO-8859-1?Q?._I_want_to_ask_you?=
	=?ISO-8859-1?Q?_the_most_important?=
	=?ISO-8859-1?Q?_question_of_your_l?=
	=?ISO-8859-1?Q?ife._Your_joy_or_so?=
	=?ISO-8859-1?Q?rrow_for_all_eterni?=
	=?ISO-8859-1?Q?ty_depends_upon_you?=
	=?ISO-8859-1?Q?r_answer._The_quest?=
	=?ISO-8859-1?Q?ion_is:_Are_you_sav?=
	=?ISO-8859-1?Q?ed=3F_It_is_not_a_que?=
	=?ISO-8859-1?Q?stion_of_how_good_y?=
	=?ISO-8859-1?Q?ou_are,_nor_if_you_?=
	=?ISO-8859-1?Q?are_a_church_member?=
	=?ISO-8859-1?Q?,_but_are_you_saved?=
	=?ISO-8859-1?Q?=3F_Are_you_sure_you_?=
	=?ISO-8859-1?Q?will_go_to_Heaven_w?=
	=?ISO-8859-1?Q?hen_you_die=3F_GOOGLE?=
	=?ISO-8859-1?Q?=B7NEWSGROUP=B7POST=B7156?=
References: <1115403614.884980.203510@f14g2000cwb.googlegroups.com>
Message-ID: <7mdn715sos6pm3qil8his3s4fbqhs58dv7@4ax.com>

Abuse reports to
groups-abuse at google.com,groups-support at google.com,abuse at aol.com,ToSReports at AOL.Com,tosusenet at aol.com,ToSGeneral at Aol.com,mail-abuse at cc.yahoo-inc.com,spam at uce.gov


From t-meyer at ihug.co.nz  Thu May 19 19:28:14 2005
From: t-meyer at ihug.co.nz (Tony Meyer)
Date: Fri, 20 May 2005 11:28:14 +1200
Subject: problem uploading ZIP file tp PyPI
In-Reply-To: <ECBA357DDED63B4995F5C1F5CBE5B1E802E59C94@its-xchg4.massey.ac.nz>
Message-ID: <ECBA357DDED63B4995F5C1F5CBE5B1E801B0F738@its-xchg4.massey.ac.nz>

>>>>> setup.py sdist --format=zip
>>>>
>>>> Try without the --format arg. The code is being too paranoid.
>>>
>>> Oh, so even without --format, a ZIP source dist file is produced 
>>> anyway? If this is the case, please file a bug against PyPI.
>>
>> How is this a bug?  sdist is meant to produce a zip file on 
>> Windows if --format isn't used.  If "upload" overrides this for some 
>> reason, then the documentation should say so (and, IMO, it would be a 
>> mistake for that to be the case).
> 
> It's a bug against PyPI, not distutils.

Did you mean that the bug is that PyPI won't accept a zipped source
distribution?  To me, your message read like it was saying that (distutils)
producing a zip source distribution file without --format was a bug.

So (if the former is what you meant) would a workaround for now be to do
something like:

  setup.py sdist --format=gztar upload

?

=Tony.Meyer



From tim.golden at viacom-outdoor.co.uk  Wed May 11 09:22:45 2005
From: tim.golden at viacom-outdoor.co.uk (Tim Golden)
Date: Wed, 11 May 2005 14:22:45 +0100
Subject: Interactive shell for demonstration purposes
Message-ID: <9A28C052FF32734DACB0A288A3533991EBB7FE@vogbs009.gb.vo.local>

[Jp Calderone]
| 
| [Tim Golden ]
|
| >[Brian Quinlan]
| >|
| >| Can anyone recommend a Python interactive shell for use in
| >| presentations?
|
| > I Googled and came across this:
| >
| >http://codespeak.net/py/current/doc/execnet.html
| >
| >which might get you started.
| >
| 
|   execnet lets you easily run arbitrary Python code on remote 
| hosts.  This doesn't seem too closely related to the OP's 
| question, which seems directed at finding a pretty GUI to 
| display the results of such execution.
| 
|   Jp

Sorry. Quite right. I assumed that because it referred to
the demo system I vaguely remembered hearing about from
EuroPython, it was doing something similar enough to be
useful. That'll teach me to respond too quickly.

TJG

________________________________________________________________________
This e-mail has been scanned for all viruses by Star. The
service is powered by MessageLabs. For more information on a proactive
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From shrivastaw at gmail.com  Wed May  4 13:24:29 2005
From: shrivastaw at gmail.com (xeron)
Date: 4 May 2005 10:24:29 -0700
Subject: Newbie.......Python and Networking
Message-ID: <1115227469.785695.16360@f14g2000cwb.googlegroups.com>

Hi ya fellas

I am planning to learn Python, and because i have a networking
background so would like to direct my learning in a way that is
beneficial to my tasks in the mentioned field, please suggest a couple
of projects which i can implement so as to accelerate the learning
process................(Python projects in Networking domain, let it be
big...3 months....2 hrs per day)

Really appreciate any help



From rune.strand at gmail.com  Mon May  9 19:47:14 2005
From: rune.strand at gmail.com (runes)
Date: 9 May 2005 16:47:14 -0700
Subject: Unique Elements in a List
References: <mailman.240.1115681082.29826.python-list@python.org>
Message-ID: <1115682433.834539.226270@f14g2000cwb.googlegroups.com>

Your set-approach is very nice, but if the list of data is huge, it is
rather slow because you'll have to loop through the data list and count
every member.



From bill.mill at gmail.com  Mon May  9 09:32:56 2005
From: bill.mill at gmail.com (Bill Mill)
Date: Mon, 9 May 2005 09:32:56 -0400
Subject: replace string patern with different value
In-Reply-To: <797fe3d40505090632612801e8@mail.gmail.com>
References: <1115645021.903836.262590@z14g2000cwz.googlegroups.com>
	<797fe3d40505090632612801e8@mail.gmail.com>
Message-ID: <797fe3d405050906321809bd80@mail.gmail.com>

On 9 May 2005 06:23:41 -0700, ajikoe at gmail.com <ajikoe at gmail.com> wrote:
> Hello,
>
> I would like to replace string with different values,
> For example :
> source = 'kode1 bla bla kode1 bla kode1'
> I have a list with each member will replace each of kode1.
> L = [11,22,33]
> So the new source will become:
> newsource = '11 bla bla 22 bla 33'
>
> How can I do it ? I tried to find using string built in function
> replace, but it will replace pattern with the same value.
>
> For this moment I think about change the string into list using
> string.split and then check one by one and replace it and then convert
> into string with addition space in the right and left of each element
> list.
>

>>> L = ['11', '22', '33']
>>> source
"xyzzy text we've got xyzzy text xyzzy yeah yeah yeah"
>>> token
'xyzzy'
>>> for rep in L:
...     source = source.replace(token, rep, 1)
...
>>> source
"11 text we've got 22 text 33 yeah yeah yeah"

And, if I may, I recommend the Python Tutorial at
http://docs.python.org/tut/tut.html .

Peace
Bill Mill
bill.mill at gmail.com


From danb_83 at yahoo.com  Sun May  1 02:11:32 2005
From: danb_83 at yahoo.com (Dan Bishop)
Date: 30 Apr 2005 23:11:32 -0700
Subject: Python Challenge ahead [NEW] for riddle lovers
References: <d4u60o$akh$1@news2.netvision.net.il>
	<mailman.47.1114818531.14961.python-list@python.org>
	<1114924100.296223.114020@g14g2000cwa.googlegroups.com>
Message-ID: <1114927892.321086.60190@z14g2000cwz.googlegroups.com>

Dan Bishop wrote:
> Shane Hathaway wrote:
> > pythonchallenge wrote:
> > > For the riddles' lovers among you, you are most invited to take
> part
> > > in the Python Challenge, the first python programming riddle on
the
> net.
> > >
> > > You are invited to take part in it at:
> > > http://www.pythonchallenge.com
> >
> > That was pretty fun.  Good for a Friday.  Too bad it comes to an
> abrupt
> > "temporary end".
>
> They've added at least one more level since yesterday.
Unfortunately,
> I'm stuck on it.

Correction: Now I'm stuck on Level 11.  I think I'm supposed to do
something with the pixels in the image, but what?



From fredrik at pythonware.com  Wed May 11 12:27:21 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Wed, 11 May 2005 18:27:21 +0200
Subject: Python Args By Reference
References: <1115769308.136143.74080@f14g2000cwb.googlegroups.com>
	<1182j1daaepv6f4@corp.supernews.com>
Message-ID: <d5tbb2$n2u$1@sea.gmane.org>

Grant Edwards wrote:

> Yes.  All arguments are passed by reference.  This must be in
> the FAQ somewhere...

hopefully not, because that saying that "all arguments are passed
by reference" is extremely confusing for people who've learned about
"call by reference" in school.

as has discussed many times on this list, using "call by object"
(or perhaps "call by object reference" or even "call by sharing")
is better, both for CS heads and for ordinary people.

see e.g.

    http://mail.python.org/pipermail/python-list/2003-May/163312.html
    http://mail.python.org/pipermail/python-list/2003-May/163028.html
    http://mail.python.org/pipermail/python-list/2003-May/163078.html

from a thread where someone claimed that Python used "call by value"
(which is true, as long as you're free to use your own definition of the
word "value" ;-)

</F>





From edvard+news at majakari.net  Fri May 27 04:08:34 2005
From: edvard+news at majakari.net (Edvard Majakari)
Date: Fri, 27 May 2005 11:08:34 +0300
Subject: how to accomplish dl progress bars?
References: <1117067512.806516.262100@g14g2000cwa.googlegroups.com>
Message-ID: <87br6x9jlp.fsf@titan.staselog.com>

"flamesrock" <flamesrock at gmail.com> writes:

> Certain web applications, everything from wget to downloader for X has
> this nifty feature I'd like to accomplish in python.
>
> Its the progress bar/time elapsed/time remaining scheme
>
> Filename  | Progress    | Speed (kB/s) | T/Elapsed | T/Remaining
> ----------------------------------------------------------------------------
> blah.bin  |------>45%   |     56.6     |   02:39   |   02:45
> file2.bz2 |--->33%      |     35.0     |   05:22   |   11:24
> etc       |-------->60% |     47.5     |   00:14   |   00:08

See python cookbook. The idea is simply to print out stuff and when updating,
erase previous characters eg. using '\r' ASCII code. Python Cookbook has a
progress bar implementation, you could use that as a basis for your code
(speed, t/elapsed and t/remaining are technically no different; if you can do
a progress bar, you can do those others as well).

-- 
# Edvard Majakari		Software Engineer
# PGP PUBLIC KEY available    	Soli Deo Gloria!

$_ = '456476617264204d616a616b6172692c20612043687269737469616e20'; print
join('',map{chr hex}(split/(\w{2})/)),uc substr(crypt(60281449,'es'),2,4),"\n";


From fredrik at pythonware.com  Thu May 26 06:10:26 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 26 May 2005 12:10:26 +0200
Subject: compiling python code
References: <IRfle.1443618$35.53839136@news4.tin.it>
Message-ID: <d7476r$2sd$1@sea.gmane.org>

Gabriele *Darkbard* Farina wrote:

> I have a python file inside a zip file. I'd like to compile it and add
> the resulting .pyc file into the zip. I tryed reading the source and
> compiling it using compile(), but I don't know how to write .pyc file.
> Can someone give me some help?

a PYC file consists of a 4-byte header (from imp.get_magic()), an 4-byte
timestamp (seconds since epoch as a 32-bit little endian integer), followed
by the marshalled code block.

see the source code for the py_compile module in the standard library for
some sample code -- or use the module itself to do the work for you:

    http://effbot.org/librarybook/py-compile.htm

</F> 





From rrr at ronadam.com  Sun May 15 20:44:36 2005
From: rrr at ronadam.com (Ron Adam)
Date: Sun, 15 May 2005 20:44:36 -0400
Subject: Quick Reference from module doc strings.
In-Reply-To: <1116199904.205240.58300@g49g2000cwa.googlegroups.com>
References: <mailman.65.1116085574.29328.python-list@python.org>
	<1116199904.205240.58300@g49g2000cwa.googlegroups.com>
Message-ID: <4287ECF4.8090204@ronadam.com>

John Machin wrote:
> Ron Adam wrote:
> 
>>Does anyone have suggestions on how to improve this further?
> 
> 
> Not functionally (from me, yet). However if you can bear a stylistic
> comment, do read on :-)
> 
> 
>>         elif (isinstance(object,str)
>>                 or isinstance(object,int)
>>                 or isinstance(object,bool)
>>                 or isinstance(object,tuple)
>>                 or isinstance(object,list)
>>                 or isinstance(object,dict)):
> 
> 
> Since Python version 2.2, the 2nd arg of isinstance may be a tuple. You
> could define this up front, with a meaningful name:
> 
> TYPES_WHICH_whatever = (str, int, bool, etc etc)
> 
> Cheers,
> John

Actually I'm begging for comments, it's the beginning of a project not 
the end.  So thanks!  ;-)

I changed it to:

    if type(object)==str:
        ....
    elif type(object) in (str,int,bool,tuple,list,dict):
        ....

Thanks, I don't need the isinstance(), type works here just as well.

What would it take to make it useful?  I'm thinking of putting it to use 
in a database where you can get quickly get info by subject and 
keywords, not just by module.  I'm also thinking of using it to generate 
web pages.

As far as the actual content of doc strings for each item, we can submit 
requests for improvements where it's needed.

Cheers,
_Ron



From http  Mon May  2 22:55:16 2005
From: http (Paul Rubin)
Date: 02 May 2005 19:55:16 -0700
Subject: Multiple threads in a GUI app (wxPython),
	communication between worker thread and app?
References: <1114966991.337599.194500@f14g2000cwb.googlegroups.com>
	<1114986451.990217.148570@f14g2000cwb.googlegroups.com>
	<1115087208.889987.195470@o13g2000cwo.googlegroups.com>
Message-ID: <7xacndaui3.fsf@ruckus.brouhaha.com>

"fooooo" <phark52 at yahoo.com> writes:
> Thanks for the replies. I have a Queue object in the main GUI thread,
> this gets passed to all the worker threads and they add items to it.
> This is all well and good, but what is a good way to get the GUI thread
> to send items back to the worker threads?

Use another Queue.


From mage at mage.hu  Mon May  2 12:31:27 2005
From: mage at mage.hu (Mage)
Date: Mon, 02 May 2005 18:31:27 +0200
Subject: popen2 psql
Message-ID: <427655DF.7030602@mage.hu>

          Hello,

maybe my question is about linux and not about python.

I tried to write a proxy script for "psql" command. I need some query
log. I failed to read from the file object.

I have tested:

a,b = os.popen2('ls')
for s in b.readlines(): print s,

and:

a,b = os.popen2('./pto.py')
for s in b.readlines(): print s,

popen2 works with 'ls' but it doesn't output anything with the './pto.py'.
The 'pto.py' is an existing python script and contains some print.

Likely I have the same problem with popening the python script and the
psql binary. I can simple popen('psql').write(), but I would like to log
everything, so I need stdin and stdout files.

Please help.

       Mage




From exarkun at divmod.com  Fri May 27 15:49:33 2005
From: exarkun at divmod.com (Jp Calderone)
Date: Fri, 27 May 2005 19:49:33 GMT
Subject: [Twisted-Python] xmlrpc deferred
In-Reply-To: <20050527194621.559.2069217516.divmod.quotient.11292@ohm>
Message-ID: <20050527194933.559.1660994187.divmod.quotient.11295@ohm>

Err woops.  Wrong list, sorry.

Jp


From mefjr75 at hotmail.com  Mon May  2 17:00:44 2005
From: mefjr75 at hotmail.com (M.E.Farmer)
Date: 2 May 2005 14:00:44 -0700
Subject: Can't get compression in Python zip script.
In-Reply-To: <mailman.48.1115065808.6583.python-list@python.org>
References: <d55b11+flng@eGroups.com>
	<1115065046.071440.62630@z14g2000cwz.googlegroups.com>
	<mailman.48.1115065808.6583.python-list@python.org>
Message-ID: <1115067644.616298.232550@z14g2000cwz.googlegroups.com>

Thank you!
"""ZIP_DEFLATED
    The numeric constant for the usual ZIP compression method. This
requires the zlib module. No other compression methods are currently
supported."""
That is where I got the 'only compression type'.
It all makes sense now.
Thanks again,
M.E.Farmer



From qwweeeit at yahoo.it  Wed May 18 15:46:28 2005
From: qwweeeit at yahoo.it (qwweeeit at yahoo.it)
Date: 18 May 2005 12:46:28 -0700
Subject: Offline debuggimg
Message-ID: <1116445588.842460.162270@g49g2000cwa.googlegroups.com>

Hi all,
with my last initiative (logging by intercepting  open calls) I
succeded (with the essential help  of Fredrik Lundh), but I must
confess that the method is too complicated...
I think that a better result could be obtained by offline debugging.
I explain: debugging is mainly an interactive activity, but you can
also use an offline method, through a file that store the debug
commands to be executed..

With pdb there is a technique of this type (which uses .pdbrc), but I
have not seen enough informations around.
Do you have more informations, or do you used it?
My goal is to have an offline debugging tool which let me fire (from
file) the debugging commands and save in another file the history of
the session, recording both the commands and the corresponding outputs.
Of course, it could be used also as a logging tool for various purposes
(it depends on the type of debugging commands you fire...).
For Linux's users this is similar to running  a command with input and
output redirection...

In your opinion the offline debugging is a viable method?

Bye.



From ajikoe at gmail.com  Sun May 22 06:45:05 2005
From: ajikoe at gmail.com (ajikoe at gmail.com)
Date: 22 May 2005 03:45:05 -0700
Subject: install python 2.4.1
Message-ID: <1116758705.327764.33740@g14g2000cwa.googlegroups.com>

hi,

I use python 2.4 and
I would like to install python 2.4.1. Is it necessary to uninstall the
first version or just install 2.4.1?

Does it effect pydef (eclipse editor) or komodo ide ?

pujo



From rschroev_nospam_ml at fastmail.fm  Tue May  3 16:07:19 2005
From: rschroev_nospam_ml at fastmail.fm (Roel Schroeven)
Date: Tue, 03 May 2005 20:07:19 GMT
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <mailman.121.1115148670.6583.python-list@python.org>
References: <d4u60o$akh$1@news2.netvision.net.il>	<mailman.47.1114818531.14961.python-list@python.org>	<3dg5isF6qe1nhU1@news.dfncis.de>
	<d4v1an$j7q$1@sea.gmane.org>	<1f7befae05043000165448b8d@mail.gmail.com>	<mailman.55.1114846630.14961.python-list@python.org>	<Pine.SOL.4.33.0505031353330.17143-100000@innovate>	<KIPde.80381$uy4.5183583@phobos.telenet-ops.be>
	<mailman.121.1115148670.6583.python-list@python.org>
Message-ID: <XRQde.80492$Cy.5159023@phobos.telenet-ops.be>

Dan Christensen wrote:

> Roel Schroeven <rschroev_nospam_ml at fastmail.fm> writes:
> 
> 
>>Chris McAloney wrote:
>>
>>
>>>Hi all,
>>>
>>>Okay, so I've been working on level seven for a LONG time now.  I've
>>>decoded the first message to get the hint for the next level.  Using the
>>>same tactics, then I decode the hint as well, but there are non-printable
>>>characters.  I've tried stripping out those characters, quoting them to
>>>include in the URL and various anagrams of the printable characters, but
>>>nothing works.  Does anybody have any suggestions?
>>
>>I just took a guess for the first of those non-printable characters, and 
>>proceeded from there. I thought it was going to be too simplistic, but 
>>it worked. And fortunately my first guess was the right one.
> 
> 
> Hmm, I didn't get any non-printable characters, just a regular English
> word to be used to get to level 8.  I think you guys must be doing
> something wrong...

Indeed, and I found out what was wrong. The puzzle is much nicer now.

-- 
If I have been able to see further, it was only because I stood
on the shoulders of giants.  -- Isaac Newton

Roel Schroeven


From skromta at gmail.com  Fri May 27 09:52:56 2005
From: skromta at gmail.com (Kalle Anka)
Date: Fri, 27 May 2005 13:52:56 +0000 (UTC)
Subject: Strings for a newbie
References: <d7726f$fdg$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
Message-ID: <loom.20050527T154948-756@post.gmane.org>

Malcolm Wooden <mwooden <at> dtptypes.com> writes:

> I want to put a sentence of words into an array, eg "This is a sentence of 
> words"
> 
> In RB it would be simple:
> 
> Dim s as string
> Dim a(-1) as string
> Dim i as integer
> 
> s = "This is a sentence of words"
> For i = 1 to CountFields(s," ")
>   a.append NthField(s," ",i)
> next
> 
> That's it an array a() containing the words of the sentence.
> 
> Now can I see how this is done in Python? - nope!

Compare this RB code

  dim s     as String
  dim a(-1) as String
  
  s = "This is a sentence of words"
  a = s.split()

with the python code

>>> s = "This is a sentece of words"
>>> s.split()
['This', 'is', 'a', 'sentece', 'of', 'words']
>>> 




From philippe at philippecmartin.com  Tue May 17 10:45:44 2005
From: philippe at philippecmartin.com (Philippe C. Martin)
Date: Tue, 17 May 2005 14:45:44 GMT
Subject: Sorting x lists based on one list ... maybe an example would make
	sense:
References: <eonie.426$VB6.363@newssvr12.news.prodigy.com>
Message-ID: <ssnie.428$VB6.184@newssvr12.news.prodigy.com>

l1 = ['a','b','c']
l2 = ['toto','titi','tata'] # 'toto' refers to 'a', 'titi' to b' ....
l3 = ['foo','bar','doe'] # 'foo' refers to 'a' ........

I want to reverse sort l1 and have l2 and l3 follow accordingly.

Regards,

Philippe






Philippe C. Martin wrote:

> Hi,
> 
> I'm looking for an easy algorithm - maybe Python can help:
> 
> I start with X lists which intial sort is based on list #1.
> 
> I want to reverse sort list #1 and have all other lists sorted
> accordingly.
> 
> Any idea is welcome.
> 
> Regards,
> 
> Philippe



From gry at ll.mit.edu  Wed May 25 15:40:58 2005
From: gry at ll.mit.edu (gry at ll.mit.edu)
Date: 25 May 2005 12:40:58 -0700
Subject: regexp for sequence of quoted strings
Message-ID: <1117050058.836444.189460@o13g2000cwo.googlegroups.com>

I have a string like:
 {'the','dog\'s','bite'}
or maybe:
 {'the'}
or sometimes:
 {}

[FYI: this is postgresql database "array" field output format]

which I'm trying to parse with the re module.
A single quoted string would, I think, be:
 r"\{'([^']|\\')*'\}"

but how do I represent a *sequence* of these separated
by commas?  I guess I can artificially tack a comma on the
end of the input string and do:

 r"\{('([^']|\\')*',)\}"

but that seems like an ugly hack...

I want to end up with a python array of strings like:

['the', "dog's", 'bite']

Any simple clear way of parsing this in python would be
great; I just assume that "re" is the appropriate technique.
Performance is not an issue.

-- George



From rbt at athop1.ath.vt.edu  Sat May 21 12:45:50 2005
From: rbt at athop1.ath.vt.edu (rbt)
Date: Sat, 21 May 2005 12:45:50 -0400
Subject: count files in a directory
In-Reply-To: <mailman.282.1116657937.8733.python-list@python.org>
References: <d6m5e1$cr7$1@solaris.cc.vt.edu>
	<d6m8nc$i4v$2@solaris.cc.vt.edu>	<200505202125.03838.jstroud@mbi.ucla.edu>
	<mailman.282.1116657937.8733.python-list@python.org>
Message-ID: <d6nojv$8ne$1@solaris.cc.vt.edu>

Heiko Wundram wrote:
> Am Samstag, 21. Mai 2005 06:25 schrieb James Stroud:
> 
>>This will work for your purposes (and seems pretty fast compared to the
>>alternative):
>>
>>file_count = len(os.walk(valid_path).next()[2])
> 
> 
> But will only work when you're just scanning a single directory with no 
> subdirectories...!
> 
> The alternative (which will work regardless of subdirectories) is something 
> like the following:
> 
> heiko at heiko ~ $ python
> Python 2.4 (#1, Apr  3 2005, 00:49:51)
> [GCC 3.4.3-20050110 (Gentoo Linux 3.4.3.20050110-r1, ssp-3.4.3.20050110-0, 
> pie- on linux2
> Type "help", "copyright", "credits" or "license" for more information.
> 
>>>>import os
>>>>path = "/home/heiko"
>>>>file_count = sum((len(f) for _, _, f in os.walk(path)))
>>>>file_count
> 
> 55579
> 
> 
> HTH!
> 

Thanks! that works great... is there any significance to the underscores that you 
used? I've always used root, dirs, files when using os.walk() do the underscores make 
it faster... or more efficient?


From fredrik at pythonware.com  Fri May 27 06:29:07 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Fri, 27 May 2005 12:29:07 +0200
Subject: struct unpack newline
References: <1117189007.980813.182830@g14g2000cwa.googlegroups.com>
Message-ID: <d76slk$r5i$1@sea.gmane.org>

grant at idscape.co.za wrote:

> I am pretty new to python and am having a problem
> intepreting binary data using struct.unpack.
> I am reading a file containing binary packed data
> using open with "rb". All the values are coming through
> fine when using (integer1,) = struct.unpack('l', line[86:90])
> except when line[86:90] contains "carriage-return" "linefeed"
> which are valid binary packed values. Error = unpack
> string size dows not match format. It seems that
> struct, instead of reading 4 bytes for line[86:90]
> only reads 2 bytes if the second byte is CR or LF.

verifying that struct doesn't care about newlines is of course
pretty trivial:

>>> import struct
>>> struct.unpack("l", "\0\0\0\0")
(0,)
>>> struct.unpack("l", "\0\r\0\0")
(3328,)
>>> struct.unpack("l", "\0\n\0\0")
(2560,)

have you verified that len(line) really is what you think?

>>> struct.unpack("l", "\0\r\n\0")
(658688,)
>>> struct.unpack("l", "\0\n\0")
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
struct.error: unpack str size does not match format

</F> 





From fredrik at pythonware.com  Thu May  5 16:11:15 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 5 May 2005 22:11:15 +0200
Subject: UnicodeDecodeError
References: <20050505200344.50040.qmail@web52209.mail.yahoo.com>
Message-ID: <d5duht$uq3$1@sea.gmane.org>

"thomas ct" wrote:

> what i was trying to say was how the various tuples behave..if i use
>
> file = ('file', filename, data)  #it gives me unicode error
> in this case I am using binary data..
>
> file = ('file', filename, 'data'*100)
> but the same filename works fine if i pass text data
>
> file = ('file', 'test.pdf', data)
>
> so if hardcode the file name /use
> filename=filename.encode("ascii") things work with binary data as well..
>
> I was wondering why..

if you mix a Unicode string with an 80-bit string, Python will try to
convert the 8-bit string to a Unicode string, which doesn't work if
the string contains characters outside the ASCII set.

you have to either encode the Unicode string into an 8-bit string, or
decode the non-ASCII string into a Unicode string.

</F>





From sakesun at boonthavorn.com  Thu May 26 02:25:05 2005
From: sakesun at boonthavorn.com (Sakesun Roykiattisak)
Date: Thu, 26 May 2005 13:25:05 +0700
Subject: __init__() not called automatically
In-Reply-To: <1117083921.273155.190790@g44g2000cwa.googlegroups.com>
References: <1117081917.760603.82610@z14g2000cwz.googlegroups.com>	<mailman.120.1117082812.18027.python-list@python.org>
	<1117083921.273155.190790@g44g2000cwa.googlegroups.com>
Message-ID: <42956BC1.9040606@boonthavorn.com>

Does c++ call base class constructor automatically ??
If I'm not wrong, in c++ you also have to call base class constructor 
explicitly.
Python just do not enforce the rule. You can leave it as desire.

BTW, I've once been an C++ expert.  Knowing python kill that skill.
However, I'm not regret.  I have c++ compiler installed, but I don't even
bother validate my last paragraph assertion.  Too disgusting.  ;)

Sriek wrote:

>Tim pointed out  rightly that i missed out the most crucial part of my
>question.
>i should have said that __init__() is not called automatically only for
>the inheritance hierarchy. we must explicitly call all the base class
>__init__() fuctions explicitly.
> i wanted a reason for that.
>Thanks Tim.
>  
>


From martin.witte at gmail.com  Sat May  7 11:39:25 2005
From: martin.witte at gmail.com (wittempj@hotmail.com)
Date: 7 May 2005 08:39:25 -0700
Subject: get file modification time in mm/dd/yyyy format?
In-Reply-To: <1115479427.957430.114270@o13g2000cwo.googlegroups.com>
References: <1115479427.957430.114270@o13g2000cwo.googlegroups.com>
Message-ID: <1115480365.651881.145580@z14g2000cwz.googlegroups.com>

Tried this it on linux, should work under windows as well I think
martin at ubuntu:~$ python
Python 2.4.1 (#2, Mar 30 2005, 21:51:10)
[GCC 3.3.5 (Debian 1:3.3.5-8ubuntu2)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
py> import time
py> t = time.localtime(1115478343)
py> print t
(2005, 5, 7, 17, 5, 43, 5, 127, 1)
py> print time.asctime(t)
Sat May  7 17:05:43 2005
py>



From greg at cosc.canterbury.ac.nz  Fri May 27 00:58:01 2005
From: greg at cosc.canterbury.ac.nz (Greg Ewing)
Date: Fri, 27 May 2005 16:58:01 +1200
Subject: Python Challenge 10?
In-Reply-To: <mailman.133.1115166849.6583.python-list@python.org>
References: <d4u60o$akh$1@news2.netvision.net.il>	<mailman.47.1114818531.14961.python-list@python.org>	<3dg5isF6qe1nhU1@news.dfncis.de>
	<d4v1an$j7q$1@sea.gmane.org>	<1f7befae05043000165448b8d@mail.gmail.com>	<mailman.55.1114846630.14961.python-list@python.org>	<Pine.SOL.4.33.0505031353330.17143-100000@innovate>	<1f7befae05050313286dd4a254@mail.gmail.com>
	<874qdjc2lb.fsf@uwo.ca>
	<mailman.133.1115166849.6583.python-list@python.org>
Message-ID: <3fnnn7F8eo6gU1@individual.net>

Can someone give me a hint for No. 10? My MindBlaster
card must be acting up -- I can't seem to tune into
the author's brain waves on this one.

I came up with what I thought was a perfectly good
solution, but apparently it's wrong. :-(

-- 
Greg Ewing, Computer Science Dept,
University of Canterbury,	
Christchurch, New Zealand
http://www.cosc.canterbury.ac.nz/~greg


From scharan20 at gmail.com  Thu May 26 04:25:07 2005
From: scharan20 at gmail.com (Sriek)
Date: 26 May 2005 01:25:07 -0700
Subject: __init__() not called automatically
In-Reply-To: <II6dnf-RIYhEwwjfRVn-hA@comcast.com>
References: <1117081917.760603.82610@z14g2000cwz.googlegroups.com>
	<mailman.121.1117083356.18027.python-list@python.org>
	<II6dnf-RIYhEwwjfRVn-hA@comcast.com>
Message-ID: <1117095907.393269.87540@g44g2000cwa.googlegroups.com>

maybe like this:
 we can have the default behaviour as calling the default constructor
( with default arguements where required ). Along with this, keep the
option open to call constructors explicitly.

My only contention is that there may be a greater reason for this rule
in the Python Language. thats it.



From efoda5446 at yahoo.com  Fri May 20 13:10:22 2005
From: efoda5446 at yahoo.com (Lorn)
Date: 20 May 2005 10:10:22 -0700
Subject: Memory errors with large zip files
Message-ID: <1116609022.526500.317990@g44g2000cwa.googlegroups.com>

Is there a limitation with python's zipfile utility that limits the
size of a file that can be extracted? I'm currently trying to extract
125MB zip files with files that are uncompressed to > 1GB and am
receiving memory errors. Indeed my ram gets maxed during extraction and
then the script quits. Is there a way to spool to disk on the fly, or
is necessary that python opens the entire file before writing? The code
below iterates through a directory of zip files and extracts them
(thanks John!), however for testing I've just been using one file:

zipnames = [x for x in glob.glob('*.zip') if isfile(x)]
for zipname in zipnames:
    zf =zipfile.ZipFile (zipname, 'r')
    for zfilename in zf.namelist():
        newFile = open ( zfilename, "wb")
        newFile.write (zf.read (zfilename))
        newFile.close()
    zf.close()


Any suggestions or comments on how I might be able to work with zip
files of this size would be very helpful.

Best regards,
Lorn



From richie at entrian.com  Wed May 11 07:11:27 2005
From: richie at entrian.com (Richie Hindle)
Date: Wed, 11 May 2005 12:11:27 +0100
Subject: Problems with csv module
In-Reply-To: <d5sngn$l4$03$1@news.t-online.com>
References: <d5sngn$l4$03$1@news.t-online.com>
Message-ID: <bvp381p5o656okbujhs74vj96bb9098dc6@4ax.com>


[Florian]
> I've one problem using the csv module.
> The code: 
> 
>         self.reader = csv.reader(f, delimiter = ",")
> 
> works perfectly. But when I use a variable for delimiter:
> 
>         self.reader = csv.reader(f, delimiter = Adelimiter)
> 
> I get the traceback:
> 
> 
> File "/home/florian/visualizer/ConfigReader.py", line 13, in __init__
>     self.reader = csv.reader(f, delimiter = Adelimiter)
> TypeError: bad argument type for built-in operation

Is this your problem?:

>>> Adelimiter = u','
>>> reader = csv.reader(f, delimiter=Adelimiter)
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
TypeError: bad argument type for built-in operation
>>> print type(Adelimiter)
<type 'unicode'>

-- 
Richie Hindle
richie at entrian.com



From max at alcyone.com  Mon May 23 16:18:13 2005
From: max at alcyone.com (Erik Max Francis)
Date: Mon, 23 May 2005 13:18:13 -0700
Subject: What are OOP's Jargons and Complexities?
In-Reply-To: <4291f80a@news.tulsaconnect.com>
References: <1116843784.627059.146910@g47g2000cwa.googlegroups.com>
	<5jacmmj9aw.fsf@idiom.com> <4291f80a@news.tulsaconnect.com>
Message-ID: <ZMOdnR11Wv8Ypw_fRVn-og@speakeasy.net>

Jonathan Bartlett wrote:

> I think you're misreading some of what is being said.

I think you're giving the author too much credit.

-- 
Erik Max Francis && max at alcyone.com && http://www.alcyone.com/max/
San Jose, CA, USA && 37 20 N 121 53 W && AIM erikmaxfrancis
   Love is the true price of love.
   -- George Herbert


From s_david_rose at hotmail.com  Mon May  2 12:09:31 2005
From: s_david_rose at hotmail.com (GMane Python)
Date: Mon, 2 May 2005 12:09:31 -0400
Subject: Forgot my wrapup of example!  Sorry!
References: <1114709684.096071.109960@l41g2000cwc.googlegroups.com>
Message-ID: <d55ivh$924$1@sea.gmane.org>

So, I forgot the last part of my example that might gel in your mind why
Objects are useful in certain situations.  Ok so you maybe followed my
example of the shopping cart.  Let's just forget for a moment the use for
shopping carts is for  websites.  Let's just say you were going to write the
lines directly into Python, like maybe at the IDLE interpreter.  Like maybe
you're testing the functionality of the routine for correctness, not actual
implementation.



You have a ShoppingCartClass(), and three users-> Dave, Tommy, Bryan.

ShoppngCartClass() has 3 methods:

.AddItem()

.RemoveItem()

.CheckOut()



These are really just def routintes you write in the class to do some action
or calculation.  Here, we want to either add an item to 'the cart', remove
one, or finalize the order.



In the interpreter,  you could do this. Define 3 users of the
ShoppingCartClass.



Dave = ShoppingCartClass()

Tommy = ShoppingCartClass()

Bryan = ShoppingCartClass()





Ok.  Now you could do different things to each:



Dave.AddItem(sku=5)

Tommy.AddItem(sku=77)

Tommy.AddItem(sku=12)

Tommy.RemoveItem(sku=12)

Dave.CheckOut(state=CT, ccard='visa', ccardnum='1234-5678-8765-431')

Tommy.CheckOut(stsate=RI, ccard='mastercard', ccardnum='431-123-4321-1234')

Bryan.CancelOrder()



so, if you were then to take account of what you had, you'd know:

Dave has item SKU=5

Tommy has item SKU=77

Bryan has his order cancelled.



This is still very hard-coded.  You could abstract, or maybe variablize,
things more. Let's try:



You can mix classes with say dictionaries, to make their use in routines
more beneficial.



So, you could have:



user = "Dave"

ShoppingCart={}

ShoppingCart[user] = ShoppingCartClass()

user = "Tommy"

ShoppingCart[user] = ShoppingCartClass()

user = "Dave"

ShoppingCart[user].AddItem(sku=55)

user = "Tommy"

ShoppingCart[user].CheckOut( ... )

ShoppingCart["Dave"].CheckOut( ... )



Putting the classes in the dictionary allow you to use names from things
like fields, config files, text files, TextControls in my favorite program
wxPython, etc.



In a class, you can have a variable 'total' and you can have a variable
'self.total'.  The first is just accessible from within the structure of the
class.  The latter is accessible from outside the class.  So, using a class
with the variable self.total, you can from outside the class say:



print ShoppingCart["Dave"].total



to get the value of the variable self.total.  (That had me buggered for a
while ..... )



If you can wrap your mind around this, you're well on your way to using OOP
I believe.  If not, , don't give up. I'm just a python/programming newbie
and maybe missed the boat completely with my posting.



Another quite important part I didn't even mention was sub-classing.  That's
taking a class, and 'inheriting' it's code to your class as a base, then you
can re-write or adddifferent methods.  But, first I think it's important to
understand how to have several instances of a single class running in
memory, each with different values for the defined variables.  I'll let
someone else talk about that.



-Dave





From siona at chiark.greenend.org.uk  Thu May 26 08:10:28 2005
From: siona at chiark.greenend.org.uk (Sion Arrowsmith)
Date: 26 May 2005 13:10:28 +0100 (BST)
Subject: Just remember that Python is sexy
References: <1116899839.323185.58350@g49g2000cwa.googlegroups.com>
	<v8adndXwp-hF4gnfRVn-ig@powergate.ca>
	<du7is16wiug.fsf@mozart.cc.tut.fi>
	<Xns96625FD0B248duncanbooth@127.0.0.1>
Message-ID: <S5u*T8wPq@news.chiark.greenend.org.uk>

Duncan Booth  <duncan.booth at suttoncourtenay.org.uk> wrote:
>Ville Vainio wrote:
>>>>>>> "Peter" == Peter Hansen <peter at engcorp.com> writes:
>>     Peter> Sion Arrowsmith wrote:
>>     >> But can you come up with a method for remembering which way
>>     >> round str.find() and str.index() are?
>> 
>>     Peter> Don't use "str" and you won't have anything to remember:
>> 
>>     Peter> 'foo bar baz'.find('spam')
>>     Peter> 'spanish inquisition'.index('parrot')
>> But which one raises an exception, and which one returns -1?

That's what I meant (and why I wrote "str." not "string.").

>The name index implies it returns something you can use as an index to get 
>at the substring.

Unfortunately, -1 can of course be used as an index. Mind you, it
would be perverse to expect to find the substring at it.

-- 
\S -- siona at chiark.greenend.org.uk -- http://www.chaos.org.uk/~sion/
  ___  |  "Frankly I have no feelings towards penguins one way or the other"
  \X/  |    -- Arthur C. Clarke
   her nu become? se bera eadward ofdun hl?ddre heafdes b?ce bump bump bump


From steven.bethard at gmail.com  Tue May 10 16:04:18 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Tue, 10 May 2005 14:04:18 -0600
Subject: Unique Elements in a List
In-Reply-To: <1115676903.432187.294910@z14g2000cwz.googlegroups.com>
References: <1115676903.432187.294910@z14g2000cwz.googlegroups.com>
Message-ID: <Qc2dnd70VKZejhzfRVn-iA@comcast.com>

superprad at gmail.com wrote:
> Is there an easy way to grab the Unique elements from a list?
> For Example:
> data = [0.1,0.5,0.6,0.4,0.1,0.5,0.6,0.9]
> 
> what I am looking for is the unique elements 0.4 and 0.9 with their
> index from the list.

This is basically the same as Fredrik Lundh's solution, but here it is 
anyway:

py> def f(lst):
...     counts = dicttools.counts(lst)
...     return [(i, elem)
...             for i, elem in enumerate(lst)
...             if counts[elem] == 1]
...
py> f([0.1,0.5,0.6,0.4,0.1,0.5,0.6,0.9])
[(3, 0.40000000000000002), (7, 0.90000000000000002)]

Where dicttools.counts is defined as:

def counts(iterable, key=None):
     result = {}
     for item in iterable:
         # apply key function if necessary
         if key is None:
             k = item
         else:
             k = key(item)
         # increment key's count
         try:
             result[k] += 1
         except KeyError:
             result[k] = 1
     return result

(I use this so often that I have a module called dicttools to hold it. 
You don't actually need the key= argument for your problem, but I just 
copied the code directly.)

STeVe


From chris.levis at gmail.com  Fri May  6 15:24:42 2005
From: chris.levis at gmail.com (chris.levis at gmail.com)
Date: 6 May 2005 12:24:42 -0700
Subject: Running python cgi scripts that require external cvs under apache
Message-ID: <1115407482.721652.281390@o13g2000cwo.googlegroups.com>

All:

I have written a Python webapp under MS IIS 5.0 that does the
following:
	-Does a CVS checkout of a particular bit of xml
	-Gets a list of valid cvs tags for that xml file
	-Based on user input via forms, modifies that xml
	-CVS checkin's that file

To have correct permissions to run the cvs binaries and to write
out the xml to be modified into a temp dir, I ended up having to
have the app run as a valid user account on this Windows box
that was hosting the app (it's just my workstation, with IIS
running).  I.e., instead of IUSR_/IWAM_<compname>, it is running
as domain\someone.  This "solution" worked well enough for me
to develop the cvs transactions, the html, etc.

However, it has been requested that I move this app onto one of
the IS Dept's servers.  They insist that I put it on a solaris
box, which is running Apache.  I have no administrative control
over this box, and I know very little about it, besides the fact
that test scripts (e.g., /cgi-bin/test.py ) work as expected.

However, I'm have a not-unexpected problem with permissions.  When
folks use this page to modify the XML, it fails because:
	1. the "effective-user-id" of the connecting person
           has insufficient rights to run the cvs binaries
           on the box
	2. can't run cvs, so checkouts/rlogs/commits don't happen

I have heard of cgiwrap (http://cgiwrap.unixtools.com), and I'm
going to take a look at that.  I was hoping that others have a
similar experience - with a happy ending - that they can share.

Any help is greatly appreciated.

-cjl



From m at m.com  Sun May  1 05:01:41 2005
From: m at m.com (monkey)
Date: Sun, 1 May 2005 17:01:41 +0800
Subject: wxPython: ansi or unicode?
Message-ID: <42749af0$1_3@rain.i-cable.com>

Hi all, which should be install? Really confused @@...
Is that mean unicode version used for programming in language other than
English?




From garyjohn at spk.agilent.com  Thu May 26 02:33:28 2005
From: garyjohn at spk.agilent.com (Gary Johnson)
Date: Thu, 26 May 2005 06:33:28 +0000 (UTC)
Subject: vim configuration for python
References: <d73255$e8b$1@nntp1.jpl.nasa.gov>
Message-ID: <1117089208.241431@cswreg.cos.agilent.com>

In comp.editors Leonard J. Reder <reder at jpl.nasa.gov> wrote:
> Hello,
> 
> I am looking at configuring vim for Python.  Most importantly I
> need 4 spaces when the tab is hit.  I am searching and getting
> a bit confused.  Does anyone know where I can find a set of
> ready made .vimrc and ~/.vim/syntax/python.vim.  If could find
> c.vim and cpp.vim these would be useful also.

The vim distribution already contains python.vim files for syntax, 
indenting and general configuration.  It also contains a similar set 
of c.vim and cpp.vim files.  These should all be in the appropriate 
subdirectories under $VIMRUNTIME.  You might take a look at

    :help ftplugins
    :help filetype-indent-on
    :help filetype-overview
    :help usr_43.txt
    :help usr_06.txt

If the files supplied with vim for Python don't do what you want, 
you might also search the scripts and tips at vim.sf.net for 
"python".

HTH,
Gary


From __peter__ at web.de  Sun May 22 12:26:52 2005
From: __peter__ at web.de (Peter Otten)
Date: Sun, 22 May 2005 18:26:52 +0200
Subject: A newbie metaclass question
References: <mailman.306.1116756948.8733.python-list@python.org>
Message-ID: <d6qbqd$ad8$02$1@news.t-online.com>

could ildg wrote:

> When I try to learn metaclass of python by article at this place:
> http://www.python.org/2.2/descrintro.html#metaclasses,
> I changed the autosuper example a little as below:
> <code>
> class autosuper(type):
>     def __init__(cls,name,bases,dict):
>         super(autosuper,cls).__init__(name,bases,dict)
>         setattr(cls,"_%s__super" % name, super(cls))
>         print "in metaclass: ", super(cls)
>         
> class A:
>     __metaclass__ = autosuper
>     def meth(self):
>         print "in class A: ", self.__super
>                 
> a=A()
> a.meth()
> </code>
> The result is as below:
> in metaclass:  <super: <class 'A'>, NULL>
> in class A:  <super: <class 'A'>, <A object>>
> 
> The 2 line are not the same. Why? 

This particular difference has more to do with the descriptor protocol than
your custom metaclass. Instead of returning a class attribute unaltered, if
present, its __get__() method is called. E. g.:

>>> class A(object):
...     pass
...
>>> class Descr(object):
...     def __get__(self, *args):
...             print "args:", args
...             return 42
...
>>> A.attr = Descr()
>>> A.attr
args: (None, <class '__main__.A'>)
42
>>> A().attr
args: (<__main__.A object at 0x402ad62c>, <class '__main__.A'>)
42

And now let's make sure:

>>> hasattr(super(A), "__get__")
True

a 'super' object has a __get__() method, and is therefore free to give you
back whatever it chooses to. (It can detect whether it's called by an
instance or a class by checking its first argument).

You might have found some hints in the text you quote, but a detailed
explanation is here:

http://users.rcn.com/python/download/Descriptor.htm

> The metaclass of python is kinda difficult for me.

IIRC you were about to learn the OO basics just a few days ago. In that
situation I would put metaclasses _very_ low on my list of priorities. 

Peter



From claudio.grondi at freenet.de  Tue May 24 08:39:46 2005
From: claudio.grondi at freenet.de (Claudio Grondi)
Date: Tue, 24 May 2005 12:39:46 -0000
Subject: searching substrings with interpositions
References: <1116926253.186047.195260@g43g2000cwa.googlegroups.com>
Message-ID: <3fgekjF7lq3qU1@individual.net>

> i search a function f(a,b) that gives 1 if a is "contained" in b with
> any sub strings interposed.

If I understand it right, it should be something
like this:

def blnFindCharSequenceAevenIfSpreadOverEntireStringB(strA, strB):
  intNoOfCharsFound = 0
  intPtrToBeginOfSubsectionOfB = 0
  intLenA = len(strA)
  intLenB = len(strB)
  blnStrAinB = False
  for chrA in strA:
    blnFoundChrA = False
    # print chrA
    for indxToB in range(intPtrToBeginOfSubsectionOfB, intLenB):
      if(chrA == strB[indxToB]):
        intNoOfCharsFound += 1
        # print "   ",chrA, strB[indxToB], indxToB
        intPtrToBeginOfSubsectionOfB = indxToB + 1
        blnFoundChrA = True
        break
      #:if
    #:for
    if(intNoOfCharsFound == intLenA):
      blnStrAinB = True
      print "sequence '%s' found in '%s'"%(strA, strB)
      break
    #:if
    if(blnFoundChrA == False):
      break
    #:if
  #:for
  if  blnStrAinB == False:
      print "sequence '%s' not in '%s'"%(strA, strB)
  #:if
#:def

strA = "0101"
strB = "000011110100"
blnFindCharSequenceAevenIfSpreadOverEntireStringB(strA, strB)

strA = "010101"
strB = "000011110100"
blnFindCharSequenceAevenIfSpreadOverEntireStringB(strA, strB)

Note: code above is intended to help clarify things only,
so that a bunch of examples can be tested.
If you need production quality code, maybe someone else
can provide it.

Is it what you are looking for?

By the way:
it looks to me like a standard problem while
comparing DNA sequences, so I suppose
that there are ready to use fast libraries
providing such kind of function.

Claudio

<borges2003xx at yahoo.it> schrieb im Newsbeitrag
news:1116926253.186047.195260 at g43g2000cwa.googlegroups.com...
> hi everyone.
> a problem:
> two binary strings, a="0101" b="000011110100";
> i search a function f(a,b) that gives 1 if a is "contained" in b with
> any sub strings interposed.
> in this example a in contained cause 000<01>111<01>00 but also
> 0<0>001111<101>00"
>  but also <0>0001111<101>00 but also 000<0>1111<01>0<0> etc....
> any idea?
> Thanx in advance.
> Giorgi Borghi
>





From smap at scarlet.be  Mon May 23 17:15:03 2005
From: smap at scarlet.be (bart)
Date: 23 May 2005 14:15:03 -0700
Subject: slow sql server DB reads
Message-ID: <3be7534e.0505231315.6a82207e@posting.google.com>

I run a python website on a IIS server. I replaced my flat file DB
with SQL server, but the reads are very slow. 7 seconds for 3 querrys
like these

conn= adodbapi.connect( "Provider=SQLOLEDB.1;Persist Security
Info=False;User ID=sa;Password=xxx;Initial Catalog=dlpl;Data
Source=(local)" )
        crsr = conn.cursor() 
        sql = "select SessionKey, SessionValue from ASPSessionState
where GUID='%s'" % self.id
        crsr.execute(sql)
        while 1: 
            info = crsr.fetchone() 
            if not info: 
                break 
            strKey = str(info[0])

Opening the database is already good for 2 seconds. 
Anyone know how to speed it up?


From john at hazen.net  Tue May  3 00:47:44 2005
From: john at hazen.net (John Hazen)
Date: Mon, 2 May 2005 21:47:44 -0700
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <1115094028.508122.174390@l41g2000cwc.googlegroups.com>
References: <d4u60o$akh$1@news2.netvision.net.il>
	<mailman.47.1114818531.14961.python-list@python.org>
	<1114924100.296223.114020@g14g2000cwa.googlegroups.com>
	<1114927892.321086.60190@z14g2000cwz.googlegroups.com>
	<zX%ce.78213$ft1.5056576@phobos.telenet-ops.be>
	<Zj2de.78345$a42.5091422@phobos.telenet-ops.be>
	<mailman.6.1115001137.6583.python-list@python.org>
	<3dmi74F6q7m6hU2@individual.net>
	<mailman.73.1115090620.6583.python-list@python.org>
	<1115094028.508122.174390@l41g2000cwc.googlegroups.com>
Message-ID: <20050503044744.GA32365@gate2.hazen.net>

* Dan Bishop <danb_83 at yahoo.com> [2005-05-02 21:09]:
> Dan Christensen wrote:
> > Reinhold Birkenfeld <reinhold-birkenfeld-nospam at wolke7.net> writes:
> >
> > > Dan Christensen wrote:
> > >> Roel Schroeven <rschroev_nospam_ml at fastmail.fm> writes:
> > >>
> > >>> There's no level 12 yet though.
> > >>
> > >> Now there's a 12 and a 13 (at least!).
> > >
> > > Anyone solved 12? Hints?
> >
> > **hint below**
> >
> > Look at the filename for the first image you see,
> 
> You mean "evil1.jpg"?

yup.

> > and make a guess at another filename.
> 
> I've made tons of guesses, but none of them worked :-(

Hmmm.  The title of the html page is "dealing evil".  If you were
playing war instead of solitaire, how would you change how you deal the
cards?

-John

P.S. - I think I've found everything, but still haven't figured out what
to do with it.  No hints yet, though.  I want to think about it some
more...


From newsgroups at jhrothjr.com  Tue May 24 13:49:08 2005
From: newsgroups at jhrothjr.com (John Roth)
Date: Tue, 24 May 2005 11:49:08 -0600
Subject: staticmethod and classmethod
References: <d6v2s5$blp$1@ucsnew1.ncl.ac.uk>
Message-ID: <1196q8pnvb97e9c@news.supernews.com>

"C Gillespie" <csgcsg39 at hotmail.com> wrote in message 
news:d6v2s5$blp$1 at ucsnew1.ncl.ac.uk...
> Hi,
>
> Does anyone know of any examples on how (& where) to use staticmethods and
> classmethods?

A python class method is closer to a Java static method than a python static 
method.
Class methods can be useful if you want to be able to change objects in the
class, or if you want to be able to use inheritance, neither of which python 
static
methods allow you to do cleanly.

Another, and rather esoteric use, is to use the class as its own instance.

I  find that static methods are useful when I want to import a class from
a module, and don't want to import the module itself or a lot of bits and
pieces from the module. The class gives a place to park the method, and
also lets you use inheritance, neither of which putting it into the module
does.

John Roth
>
> Thanks
>
> Colin
>
> 



From ville at spammers.com  Sat May 21 03:29:30 2005
From: ville at spammers.com (Ville Vainio)
Date: 21 May 2005 10:29:30 +0300
Subject: first release of PyPy
References: <mailman.264.1116625088.8733.python-list@python.org>
	<1116629407.638782.145950@g47g2000cwa.googlegroups.com>
	<1116644536.741250.249860@g44g2000cwa.googlegroups.com>
	<mailman.279.1116649250.8733.python-list@python.org>
	<1116653460.808204.74460@g43g2000cwa.googlegroups.com>
	<87mzqpytep.fsf@wilson.rwth-aachen.de>
	<7xfywhxerd.fsf@ruckus.brouhaha.com>
	<87is1dyru8.fsf@wilson.rwth-aachen.de>
Message-ID: <du7hdgxt4th.fsf@amadeus.cc.tut.fi>

>>>>> "Torsten" == Torsten Bronger <bronger at physik.rwth-aachen.de> writes:

    Torsten> What's supposed to be compiled?  Only PyPy itself or also
    Torsten> the programs it's "interpreting"?

PyPy is written in python, if it can be compiled then the programs can
be as well.

    Torsten> I've been told by so many books and on-line material that
    Torsten> Python cannot be compiled (unless you cheat).  So how is
    Torsten> this possible?

These guys are exploring a new territory. OTOH, Lisp is a dynamic
language like python and it can be compiled to native code. Pyrex
demonstrates the "trivial" way to compile python to native code, the
real problem is making the resulting code fast. Typically this
requires type inference (i.e. figuring out the type of an object from
the context because there are no type declarations) to avoid dict
lookups in method dispatch.

This is not about PyPy but it might help:

http://www.python.org/pycon/dc2004/papers/1/paper.pdf

-- 
Ville Vainio   http://tinyurl.com/2prnb


From hancock at anansispaceworks.com  Thu May 12 01:11:12 2005
From: hancock at anansispaceworks.com (Terry Hancock)
Date: Thu, 12 May 2005 00:11:12 -0500
Subject: Python Documentation (should be better?)
In-Reply-To: <d5tnfo$1eg$1@sea.gmane.org>
References: <mailman.389.1115837608.29826.python-list@python.org>
	<rs2dnWXMCe-Rwx_fRVn-qw@comcast.com> <d5tnfo$1eg$1@sea.gmane.org>
Message-ID: <200505120011.13053.hancock@anansispaceworks.com>

On Wednesday 11 May 2005 02:54 pm, Christopher J. Bottaro wrote:
> I guess what I'm trying to say is that there is no manual (for the language
> itself, not the modules).  There is just the tutorial that serves as the
> manual.  I think it should evolve into a manual that is more comprehensive
> and organized more like other programming manuals (chapter on control
> structures, functions, classes, inheritance, etc).

That's probably because

1) The language itself is extremely simple.  What you really need is in the
tutorial (or in several books including "Learning Python" from O'Reilly which
I learned from).  If you need more than that, then you must be looking for
something fairly picky (like "magic methods" perhaps), so you really do want
to be reading the "Language Reference".  Don't overthink it.

2) About 90% of what you want to do in Python is done by using a library
module.  Furthermore, it's the 90% you are likely to forget, thus needing
a manual for reference.  That's why I regard the "Library Reference" as
"the manual".  Don't forget that many "built-ins" are documented here as
well (e.g. the methods of strings*).

There are, of course, numerous introductions to Python which can be freely
downloaded, and several commercial books on the subject.  IMHO, the
"manual" is to be the ultimate, most up-to-date, most accurate, and most
detailed source on the language (you go there to check details if something
doesn't work the way your tutorial says it does).  Readability is secondary --- 
use a third party source for the "friendly" version (not that the Language
or Library References are unfriendly --- they're just concise, IMHO).

Also, Python gives you something most languages don't --- the interactive
interpreter allows you to play around with Python constructs and find out
how any picky details work by trying it out. This is clearly the most
guaranteed accurate way to find out the answer to a syntax or semantic
problem, and it's so easy it's hard to justify the wasted time perusing a
manual for such details.  That's why people are frequently recommended
to "ask the interpreter" about such details.  This saves a HUGE amount
of time for me --- I'm surprised that you dislike this approach, it seems
extremely practical to me.

*But you do have to remember that strings are documented under "sequences"
this is probably my biggest complaint about the Library Reference --- something
as important as string methods should have its own heading in the top-level
outline.  But that's a nitpick, of course.

--
Terry Hancock ( hancock at anansispaceworks.com )
Anansi Spaceworks  http://www.anansispaceworks.com



From jepler at unpythonic.net  Tue May 17 07:56:20 2005
From: jepler at unpythonic.net (Jeff Epler)
Date: Tue, 17 May 2005 06:56:20 -0500
Subject: Interaction between TclTk editor with Python code
In-Reply-To: <1116308178.943049.168270@g44g2000cwa.googlegroups.com>
References: <1116308178.943049.168270@g44g2000cwa.googlegroups.com>
Message-ID: <20050517115616.GA25682@unpythonic.net>

One way to get a handle on some Tcl variables from Python is to create
Tkinter.Variable instances with the names of the existing Tcl variables
(normally, the variable names are chosen arbitrarily).  Once you've done
this, you can do things like add variable traces (the trace_variable
method) on the Python side.  One thing to be aware of is that the Python
object's __del__ will unset the variable on the Tcl side.  Also, this
code sets an initial value for the variable which may or may not be
appropriate in your application.

The code below was ripped from a larger application, so it may or may
not work without modification.

Jeff

# This code is in the public domain
from Tkinter import *
def makevar(master, name, klass, *default):
    self = newinstance(klass)
    self._master = master
    self._tk = master.tk
    self._name = name
    if default:
        self.set(default[0])
    else:
        self.set(self._default)
    return self

def makebool(master, name, *default):
    return makevar(master, name, Tkinter.BooleanVar, *default)
def makeint(master, name, *default):
    return makevar(master, name, Tkinter.IntVar, *default)
def makefloat(master, name, *default):
    return makevar(master, name, Tkinter.DoubleVar, *default)
def makestring(master, name, *default):
    return makevar(master, name, Tkinter.StringVar, *default)
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From p at ulmcnett.com  Thu May 26 00:55:52 2005
From: p at ulmcnett.com (Paul McNett)
Date: Wed, 25 May 2005 21:55:52 -0700
Subject: __init__() not called automatically
In-Reply-To: <1117081917.760603.82610@z14g2000cwz.googlegroups.com>
References: <1117081917.760603.82610@z14g2000cwz.googlegroups.com>
Message-ID: <429556D8.1080602@ulmcnett.com>

Sriek wrote:
> hi,
> i come from a c++ background. i ws happy to find myself on quite
> familiar grounds with Python. But, what surprised me was the fact that
> the __init__(), which is said to be the equivlent of the constructor in
> c++, is not automatically called. 

What do you mean by automatically? :

Python 2.4.1 (#2, May  5 2005, 09:45:41)
[GCC 4.0.0 20050413 (prerelease) (Debian 4.0-0pre11)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
 >>> class A(object):
...     def __init__(self):
...             print "in __init__"
...
 >>> a = A()
in __init__

So __init__ is definitely called upon instantiation.  It is true that if 
you derive from A and override __init__, A.__init__ won't be called 
unless done so explicitly like:

class B(A):
	def __init__(self):
		print "in B.__init__()"
		super(B, self).__init__()

> I'm sure there must be ample reason
> for this. I would like to know why this is so? This is my view is more
> burden on the programmer.

It isn't that much practical burden, and IMO it makes perfect sense. 
When you override a method of a class, you want to have to explicitly 
call superclass code, not have it run automatically, else you lose 
control of the flow.


> Similarly, why do we have to explicitly use the 'self' keyword
> everytime?

This is closer to a wart, IMO, but once you've used Python for a while 
you'll come to understand why this is so. Basically, everything in 
Python is either a namespace or a name in a namespace. In the case of 
the self reference which Python sends as the first arg automatically, 
the method needs to bind that to a local name which is, by convention 
only, 'self'.


> Every kind of help would be welcome.

You've found the right place to hang out. Welcome!


-- 
pkm ~ http://paulmcnett.com



From ccurvey at gmail.com  Wed May  4 11:17:07 2005
From: ccurvey at gmail.com (Chris Curvey)
Date: 4 May 2005 08:17:07 -0700
Subject: xmlrpclib and decoding entity references
In-Reply-To: <1115210118.418388.164710@g14g2000cwa.googlegroups.com>
References: <1115132826.795008.320190@z14g2000cwz.googlegroups.com>
	<427827a2$1_3@newspeer2.tds.net>
	<1115210118.418388.164710@g14g2000cwa.googlegroups.com>
Message-ID: <1115219827.829558.200940@f14g2000cwb.googlegroups.com>

Here is the solution.  Incidentally, the client is Cold Fusion.

import re
import logging
import logging.config
import os
import SimpleXMLRPCServer

logging.config.fileConfig("logging.ini")

########################################################################
class
LoggingXMLRPCRequestHandler(SimpleXMLRPCServer.CGIXMLRPCRequestHandler):
    def __dereference(self, request_text):
        entityRe = re.compile("((?P<er>&#x)(?P<code>..)(?P<semi>;))")
        for m in re.finditer(entityRe, request_text):
            hexref = int(m.group(3),16)
	    charref = chr(hexref)
	    request_text = request_text.replace(m.group(1), charref)

	return request_text


#-------------------------------------------------------------------
    def handle_xmlrpc(self, request_text):
        logger = logging.getLogger()
	#logger.debug("************************************")
	#logger.debug(request_text)
	try:
	    #logger.debug("-------------------------------------")
	    request_text = self.__dereference(request_text)
	    #logger.debug(request_text)
	    request_text = request_text.decode("latin-1").encode('utf-8')
	    #logger.debug("************************************")
	except Exception, e:
	    logger.error(request_text)
	    logger.error("had a problem dereferencing")
	    logger.error(e)

	SimpleXMLRPCServer.CGIXMLRPCRequestHandler.handle_xmlrpc(self,
request_text)
########################################################################
class Foo:
    def settings(self):
        return os.environ
    def echo(self, something):
        logger = logging.getLogger()
	logger.debug(something)
        return something
    def greeting(self, name):
        return "hello, " + name

# these are used to run as a CGI
handler = LoggingXMLRPCRequestHandler()
handler.register_instance(Foo())
handler.handle_request()



From rogerb at rogerbinns.com  Sun May  8 13:45:23 2005
From: rogerb at rogerbinns.com (Roger Binns)
Date: Sun, 8 May 2005 10:45:23 -0700
Subject: pyvm -- faster python
References: <mailman.164.1115548611.29826.python-list@python.org>
	<1115561483.741761.212140@f14g2000cwb.googlegroups.com>
Message-ID: <m102l2-9qr.ln1@home.rogerbinns.com>

> could You tell us a bit more about Your motivation to create an
> alternative C-Python interpreter?

I'd also be curious to know if the performance gains would remain
once it gets fleshed out with things like closures, long numbers,
new style classes and a C library compatibility shim.

Roger 




From grante at visi.com  Sun May  8 13:10:10 2005
From: grante at visi.com (Grant Edwards)
Date: Sun, 08 May 2005 17:10:10 -0000
Subject: Curve fitting
References: <Pine.LNX.4.44.0505081237260.20692-100000@urchin.earth.li>
Message-ID: <117shvi5c3plk79@corp.supernews.com>

On 2005-05-08, Tom Anderson <twic at urchin.earth.li> wrote:

> I'd like to fit a curve (a rectangular hyperbola, in fact) to
> some data points as part of a program i'm writing. Can anyone
> suggest a package which would help me do this?

I use the LeastSquares function in Scientific Python:

  http://starship.python.net/~hinsen/ScientificPython/

> A bit of googling suggests that SciPy might be what i want.
> Does that sound likely?

Sure.

-- 
Grant Edwards                   grante             Yow!  An air of FRENCH
                                  at               FRIES permeates my
                               visi.com            nostrils!!


From ihatespam at hotmail.com  Mon May  2 09:56:15 2005
From: ihatespam at hotmail.com (vkeyboard)
Date: Mon, 02 May 2005 13:56:15 GMT
Subject: Which IDE is recommended?
References: <426f90ac$1_2@rain.i-cable.com>
	<9f7v619jhigbtoksslnr88f4idoc6ejvu3@4ax.com>
	<1115039282.069052.287920@o13g2000cwo.googlegroups.com>
Message-ID: <7d55e4405b270c8e461745203558cf50$1@jtp.tzo.com>

Also take a look at Stani's Python Editor http://spe.pycs.net



From donald.welch at NOSPAM.hp.com  Wed May 18 16:45:30 2005
From: donald.welch at NOSPAM.hp.com (Don)
Date: Wed, 18 May 2005 13:45:30 -0700
Subject: Comparing 2 similar strings?
References: <24a6d$428b9c10$d1b717f8$2300@PRIMUS.CA>
Message-ID: <428af314@usenet01.boi.hp.com>

William Park wrote:

> How do you compare 2 strings, and determine how much they are "close" to
> each other?  Eg.
>     aqwerty
>     qwertyb
> are similar to each other, except for first/last char.  But, how do I
> quantify that?
> 
> I guess you can say for the above 2 strings that
>     - at max, 6 chars out of 7 are same sequence --> 85% max
> 
> But, for
>     qawerty
>     qwerbty
> max correlation is
>     - 3 chars out of 7 are the same sequence --> 42% max
> 
> (Crossposted to 3 of my favourite newsgroup.)
> 

http://www.personal.psu.edu/staff/i/u/iua1/python/apse/
http://www.nist.gov/dads/HTML/editDistance.html


From mbbx6spp at gmail.com  Fri May 27 13:47:09 2005
From: mbbx6spp at gmail.com (mbbx6spp at gmail.com)
Date: 27 May 2005 10:47:09 -0700
Subject: Does Python have a Template::Extract equivalent from Perl's CPAN
References: <1117215841.123847.234300@o13g2000cwo.googlegroups.com>
Message-ID: <1117216029.787610.201500@g44g2000cwa.googlegroups.com>

should have read, "if nobody is aware of any module..." not "if nobody
is not aware...".



From dstcruz at gmail.com  Tue May 10 12:55:32 2005
From: dstcruz at gmail.com (Daniel  Santa Cruz)
Date: 10 May 2005 09:55:32 -0700
Subject: Put a file on an ftp server over ssl
Message-ID: <1115744132.371147.3240@o13g2000cwo.googlegroups.com>

Hello all!

I have been troubled for the past couple of days trying to write a
simple script that sends a file to an ftp server.  It used to be the
easiest thing in the world, but now the server has changed to a ftps
(ftp over ssl) server.  All of the sudden, the world has come to a
crawling stop.

Seems that M2Crypto would maybe do the trick, but I can't buy the thing
(they won't pay for it).  Other than suggesting projects, does any one
have actuall working code to do something like this?  My, it seems like
it should be VERY simple, but it has become a nightmare.

Oh do I wish...

f = ftps.connect('username', 'password', port)
ftps.put(localFilePath)

Done!

Thanks for any help!

Daniel



From aurora00 at gmail.com  Thu May 26 00:30:16 2005
From: aurora00 at gmail.com (aurora)
Date: Wed, 25 May 2005 21:30:16 -0700
Subject: win32clipboard.GetClipboardData() return string with null characters
Message-ID: <op.src74qnv6yt6e7@news.cisco.com>

I was using win32clipboard.GetClipboardData() to retrieve the Windows  
clipboard using code similar to the message below:

http://groups-beta.google.com/group/comp.lang.python/msg/3722ba3afb209314?hl=en

Some how I notice the data returned includes \0 and some characters that  
shouldn't be there after the null character. It is easy enough to truncate  
them. But why does it get there in the first place? Is the data length  
somehow calculated wrong?

I'm using Windows XP SP2 with Python 2.4 and pywin32-203.

aurora


From steve at REMOVETHIScyber.com.au  Thu May 19 11:47:15 2005
From: steve at REMOVETHIScyber.com.au (Steven D'Aprano)
Date: Fri, 20 May 2005 01:47:15 +1000
Subject: Comparing 2 similar strings?
References: <24a6d$428b9c10$d1b717f8$2300@PRIMUS.CA>
	<428BA05D.1010600@lsupcaemnt.com>
	<3d9n815cpmavos1fl6ts712h9qogdv3fur@4ax.com>
	<tOydnZJPi5FmeBbfRVn-3A@comcast.com>
	<ukqn811uo3qaa5lpihfq1fu71auuslel10@4ax.com>
	<wOSdnW21Bo1qlBHfRVn-uQ@comcast.com>
	<153o811mt7uhqa3aojb5101sd7qo4jrgps@4ax.com>
Message-ID: <pan.2005.05.19.15.47.09.713982@REMOVETHIScyber.com.au>

On Thu, 19 May 2005 14:09:32 +1000, John Machin wrote:

> None of the other approaches make the mistake of preserving the first
> letter -- this alone is almost enough reason for jettisoning soundex.

Off-topic now, but you've made me curious.

Why is this a bad idea?

How would you handle the case of "barow" and "marow"? (Barrow and
marrow, naturally.) Without the first letter, they sound identical. Why is
throwing that information away a good thing?

Thanks,


-- 
Steven




From anton.vredegoor at gmail.com  Tue May 17 07:34:26 2005
From: anton.vredegoor at gmail.com (Anton Vredegoor)
Date: 17 May 2005 04:34:26 -0700
Subject: Python on a public library computer
In-Reply-To: <87r7g6rbz0.fsf@pobox.com>
References: <1116069664.779281.320540@g47g2000cwa.googlegroups.com>
	<87r7g6rbz0.fsf@pobox.com>
Message-ID: <1116329666.566651.42950@z14g2000cwz.googlegroups.com>

John J. Lee wrote:

> Why not Jython?

There's no command prompt! The file menu from IE is also gone. There is
a sun Java console but it looks like this:

<quote Sun Java Console>

Java(TM) Plug-in: Version 1.4.2_06
Using JRE version 1.4.2_06 Java HotSpot(TM) Client VM
User home directory = C:\Documents and Settings\xxxxx
----------------------------------------------------
c:   clear console window
f:   finalize objects on finalization queue
g:   garbage collect
h:   display this help message
l:   dump classloader list
m:   print memory usage
o:   trigger logging
p:   reload proxy configuration
q:   hide console
r:   reload policy configuration
s:   dump system properties
t:   dump thread list
v:   dump thread stack
x:   clear classloader cache
0-5: set trace level to <n>

</quote Sun Java Console>

Thanks for replying anyway!

Anton



From sizelji at insightbb.com  Tue May 10 19:53:43 2005
From: sizelji at insightbb.com (Jim Sizelove)
Date: Tue, 10 May 2005 23:53:43 GMT
Subject: Merging overlapping spans/ranges
In-Reply-To: <42813c84.1201907341@news.oz.net>
References: <4280b31b$0$198$edfadb0f@dread12.news.tele.dk>
	<42813c84.1201907341@news.oz.net>
Message-ID: <bQbge.73336$c24.41132@attbi_s72>

Bengt Richter wrote:
> On Tue, 10 May 2005 15:14:47 +0200, Max M <maxm at mxm.dk> wrote:
> 
> 
>>I am writing a "find-free-time" function for a calendar. There are a lot 
>>of time spans with start end times, some overlapping, some not.
>>
>>To find the free time spans, I first need to convert the events into a 
>>list of non overlapping time spans "meta-spans".
>>
>>This nice ascii graph should show what I mean.
>>
>>1) ---
>>2)     ---
>>3)   ---
>>4)          -----
>>5)             -----
>>
>>
>>>>-------  -------- # meta spans
>>
>>I can then iterate through the meta-spans and find non-busy times.
>>
>>I have written the class below, but it is rather O^2, so I wondered if 
>>anybody has an idea for a better approach?
>>
> 
> Maybe (not tested beyond what you see ;-)

It is with some trepidation that I write this message; after hanging 
around in c.l.p for the better part of a year, I have come to expect 
Bengt's messages to be right-on and error-free.

However this time...  :)
>  >>> def mergespans(spans):
>  ...      start = end = None
>  ...      for s,e in sorted(spans):
>  ...          if start is None: start, end = s,e; continue
>  ...          if s <= end: end = e; continue
>  ...          yield start, end
>  ...          start,end = s,e
>  ...      if start is not None: yield start, end
>  ...
>  >>> spans = [(0,3), (4,7), (2,5), (9,14), (12,17)]
>  >>> list(mergespans(spans))
>  [(0, 7), (9, 17)]

There can be a problem in mergespans if one span fits inside another:

  >>> spans = [(0,5), (4,7), (2,3), (9,14), (12,17)]
  >>> list(mergespans(spans))
  [(0, 3), (4, 7), (9, 17)]

Here is a revised version (not tested beyond what you see ;-)
  >>> def mergespans(spans):
  ...     start = end = None
  ...     for s,e in sorted(spans):
  ...         if start is None:
  ...             start, end = s,e
  ...             continue
  ...         if s <= end:
  ...             if end < e:
  ...                 end = e
  ...             continue
  ...         yield start, end
  ...         start,end = s,e
  ...     if start is not None:
  ...         yield start, end
  ...
  >>> list(mergespans([(0,5), (4,7), (2,3), (9,14), (12,17)]))
  [(0, 7), (9, 17)]
  >>> list(mergespans([(0,3), (4,7), (2,5), (9,14), (12,17)]))
  [(0, 7), (9, 17)]

Can anyone find any other errors in this? ;-)

With humble regards,
Jim Sizelove


From jason.mobarak at gmail.com  Sat May  7 23:50:54 2005
From: jason.mobarak at gmail.com (Jason  Mobarak)
Date: 7 May 2005 20:50:54 -0700
Subject: properties vs. eval()
In-Reply-To: <1115328861.200050.167030@z14g2000cwz.googlegroups.com>
References: <1115235178.971840.248160@o13g2000cwo.googlegroups.com>
	<1115282375.131965.118320@z14g2000cwz.googlegroups.com>
	<1115328861.200050.167030@z14g2000cwz.googlegroups.com>
Message-ID: <1115524254.481989.195670@g14g2000cwa.googlegroups.com>

Bob  Rogers wrote:
> So you're saying you don't know the answer?  The question wasn't
> "should I use setattr?"

If what you're doing is wrong and backwards then it doesn't matter what
the question is. Best practices are best practices for a reason.
There's no reason to use eval to do what you want. The constructs
eval/exec/compile all have their purposes (for example: a remote python
shell) but they weren't intended to be broken replacements for setattr.



From cotyspend at yahoo.com  Thu May 26 20:41:59 2005
From: cotyspend at yahoo.com (nephish)
Date: 26 May 2005 17:41:59 -0700
Subject: dirrection for simple record keeping app.
Message-ID: <1117154519.350682.59340@z14g2000cwz.googlegroups.com>

Hey there,
i have been spending some time learning python. i do enjoy it so.
Heres the deal. i need some dirrection advice.
i have a friend that wants me to set up a customer database for him.
Easy stuff like name, phone number, email address. and current status.
he also wants to be able to print this stuff out.
Heres the deal. He runs windows xp.
how could i write something to help him out ? i thought of glade, since
its gtk and gtk can use a windows runtime.... i also thought of making
something web-based and doing this with cgi scripts. but what would be
easier to learn.... using a database like mysql, or writing text files
and reading them to retrieve the info. The scripting itself could just
be a simple dictionary... so........
any suggestions?
thanks



From "myname" at example.invalid  Thu May 26 09:24:27 2005
From: "myname" at example.invalid (VK)
Date: Thu, 26 May 2005 15:24:27 +0200
Subject: Access from one class to methode of other class
In-Reply-To: <1117113441.649947.315350@g44g2000cwa.googlegroups.com>
References: <3flu22F8g4u4U1@news.dfncis.de>
	<1117113441.649947.315350@g44g2000cwa.googlegroups.com>
Message-ID: <3fm112F8iqc2U1@news.dfncis.de>

> I don't know if your're actually calling the classes '1' and '2', but
> that's a really bad idea!
> 
> 
>>class 2:
>>   def ins(self)
>>       d.entry.insert(variable)
> 
> 
> This is probably where you're getting the NameError. d is not defined,
> so calling d.entry will generate an error.
> 
> Reidar
> 

What is d = 1() in my example then? And how do I solve this problem?
?


From ramen at lackingtalent.com  Fri May  6 19:57:22 2005
From: ramen at lackingtalent.com (Dave Benjamin)
Date: Fri, 06 May 2005 16:57:22 -0700
Subject: annonymous functions -- how to
In-Reply-To: <ANOdnZP8Q63YSebfRVn-jw@powergate.ca>
References: <1115239458.776800.240080@g14g2000cwa.googlegroups.com><d5bdip$bpp$05$2@news.t-online.com><42795acb.685370470@news.oz.net><1115264804.625020.203800@f14g2000cwb.googlegroups.com><YuWdnVUxIKrdmuffRVn-oA@powergate.ca>	<TPree.10739$fI.442@fed1read05><mailman.84.1115365568.29826.python-list@python.org>	<2fNee.10965$fI.8507@fed1read05>
	<mailman.105.1115400003.29826.python-list@python.org>
	<z0Oee.14624$gc6.13188@okepread04>
	<ANOdnZP8Q63YSebfRVn-jw@powergate.ca>
Message-ID: <rxTee.16346$gc6.6233@okepread04>

Peter Hansen wrote:
> Dave Benjamin wrote:
> 
>> def add_thingy():
>>     def func(thingy_id):
>>         print 'got thingy id:', thingy_id
>>         def funnc(doodad_id):
>>             print 'got doodad id:', doodad_id
>>             def func(thingy_doodad):
>>                 print 'thingy doodad created, froobling...'
>>                 frooble(thingy_doodad)
>>                 print 'froobling complete'
>>             with_new_thingy_doodad(thingy_id, doodad_id, func)
>>         with_next_doodad_id(func)
>>     with_next_thingy_id(func)
>>
>> This function now has an infinite loop. Can you spot the reason?
> 
> Not offhand, and to be completely honest, the original with the longer 
> names was equally unreadable.  I doubt this is the best way to do 
> whatever the heck it is that this is supposed to do.

I agree. I think both are difficult to read. I find the first version 
that I originally posted (using an imaginary anonymous function syntax) 
much easier to understand.

I think I've made it pretty clear what this is supposed to do in my 
earlier post to Fredrik, delineating each step of the communication 
process. If you have a better way to do this, I'd certainly like to see it.

> Oh, and while I was typing my eyes fell on "funnc" misspelled above. 
> Presumably that's your loop...

Yes, precisely. And because of a typo, the wrong callback gets passed, 
causing it to use the same callback over and over. With anonymous 
functions, there would be nothing to name, and therefore, nothing to 
misspell.

> Spelling "func" as "_" would tend to avoid this as well, unless you have 
> a keyboard that repeats keys accidentally.

Hrmmm. Well, it is less to type.

Dave


From gsakkis at rutgers.edu  Wed May 25 22:13:00 2005
From: gsakkis at rutgers.edu (George Sakkis)
Date: 25 May 2005 19:13:00 -0700
Subject: Python analog of Ruby on Rails?
References: <mailman.100.1117039885.18027.python-list@python.org>
	<4294adc3$0$2526$626a14ce@news.free.fr>
	<mailman.107.1117051304.18027.python-list@python.org>
Message-ID: <1117073580.063476.125140@g14g2000cwa.googlegroups.com>

"Christopher J. Bottaro" wrote:

> Cool signature, can anyone do a Python one that I can leech?  =)
>
> -- C
>

Here's the transliteration in python for your address:

python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')])
             for p in 'orattobjc at inmula.sc.saxetu.ude'.split('@')])"

Cheers,
George



From bokr at oz.net  Wed May  4 10:53:01 2005
From: bokr at oz.net (Bengt Richter)
Date: Wed, 04 May 2005 14:53:01 GMT
Subject: Better way to do parsing?
References: <mailman.146.1115201659.6583.python-list@python.org>
Message-ID: <4278d744.651699213@news.oz.net>

On Wed, 04 May 2005 07:13:22 -0300, =?ISO-8859-1?Q?Andr=E9_Roberge?= <andre.roberge at gmail.com> wrote:

>Hi all,
>
>I posted the following on the python tutor list 3 days ago ... and 
>haven't heard a peep from anyone - which is highly unusual on that list.
>
>[Apologies for the slightly longer post due to code
>with tests cases included at the end .]
>====================
>I have created a "severely restricted" environment within with
>users can learn the basics of programming in Python.
>
>[note: eval, exec, chr, input, raw_input are not allowed.]
>
>Within that environment, I want to have the user test the five
>valid forms that an import statement can have, by attempting to
>import a fake module whose name is "useful".  Other "import"
>statements are disallowed.
>
>1. import useful
>2. from useful import *
>3. from useful import valid_function1 [, valid_function2, ...]
>4. from useful import valid_function as better_named_function
>5. import useful as not_so_useful_after_all
>
>As far as I can tell, the following works, but it looks rather
>"clunky" to me.  My *very limited* experience with the
>"re" module may have something to do with this.
>
>Any suggestion would be most welcome.
>
I don't in any way want to discourage your enthusiastic pursuit of
your goal, but I suspect you might have more fun with another approach,
unless you really want to learn about the limitations of regexes first ;-)
(Don't get me wrong, regexes are great for what they do best).

I.e., if you want to parse python, there are modules that will help you
a lot more than just re will. If you want to validate source
according to your own rules before compiling, you could walk the
ast and raise exceptions where your rules are violated. Or if you
want to emulate excution as you walk the tree, you can do that too.
Either way, this post of Michael Spencer's ought to give you food for thought:

    http://mail.python.org/pipermail/python-list/2005-March/270760.html

Also for more general (not just python syntax) parssing the pyparsing
program referenced in the followon post looks very nice, though I have not tried it.

    http://pyparsing.sourceforge.net/


Regards,
Bengt Richter


From rupole at hotmail.com  Thu May 19 15:28:38 2005
From: rupole at hotmail.com (Roger Upole)
Date: Thu, 19 May 2005 15:28:38 -0400
Subject: How to receive events (eg. user mouse clicks) from IE
References: <1116476411.853695.235670@g14g2000cwa.googlegroups.com>
	<428c3cbe$1_1@spool9-west.superfeed.net>
	<1116529345.146032.91880@f14g2000cwb.googlegroups.com>
Message-ID: <428ce9c6$1_1@spool9-west.superfeed.net>

ie.Document will give you the document object.
That's where the Html object library comes in,
it contains the early-binding code for the Document
interface.  Then you can hook one of the event classes
for the Document (I see several in the generated file)
using the same methodology as  shown for the web
browser events.

     Roger

<cal_2pac at yahoo.com> wrote in message 
news:1116529345.146032.91880 at f14g2000cwb.googlegroups.com...
> Hi
> Thanks for the response and for the code.
> However, I want to trap events like mouse click on the HTML document
> loaded by the web browser control. The code mentioned below provides
> events from the web browser control. I need to find out on which
> particular HTML tag did the user click for example.
> How do I find that out? There should be some way to refer to a document
> from a given web browser control and start receiving events from it
>
>
> Roger Upole wrote:
>> The two you'll need to run makepy for are Microsoft Internet Controls
> and
>> Microsoft HTML object Library.  If you run them manually, you should
> be
>> able to look at the generated code to get the guids.
>> Here's a minimal example:
>>
>> import win32com.client
>>
>>
> ie_mod=win32com.client.gencache.EnsureModule('{EAB22AC0-30C1-11CF-A7EB-0000C05BAE0B}',0,
>
>> 1, 1)
>> class IE_Events(ie_mod.DWebBrowserEvents2):
>>     def OnNavigateComplete2(self, pDisp, URL):
>>         print 'OnNavigateComplete2:', URL
>>
>>
> ie=win32com.client.DispatchWithEvents('InternetExplorer.Application',IE_Events)
>> ie.Visible=1
>> ie.Navigate('http://www.google.com')
>>
>>    hth
>>       Roger
>>
>>
>> <cal_2pac at yahoo.com> wrote in message
>> news:1116476411.853695.235670 at g14g2000cwa.googlegroups.com...
>> >I am trying to trap events from internet explorer eg. when user
> clicks
>> > on an html link - I need to get notified for that event.
>> >
>> > After looking through the newgroups / internet and reading through
>> > various sections in programming python on win32 - I understand that
>> > this can be done using DispatchWithEvents.
>> > I have also referred to discussions on comp.lang.python
>> >
> http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/a3c502d06412a5f8/0ee3083e71316da7?q=dispatchwithevents&rnum=43#0ee3083e71316da7
>> >
>> > and
>> >
>> >
> http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/1da0668794851296/5bcec1fda216c598?q=dispatchwithevents&rnum=19#5bcec1fda216c598
>> >
>> > So far - none of the newgroups postings report that IE events were
>> > trapped successfully (at least I could not find any). However,
> there is
>> > enough evidence that it can be done.
>> > My problems at the moment:
>> > a) The examples use early binding. However, I cannot get Python
> makepy
>> > to generate the code to force makepy process at run time - since
> COM
>> > makepy utility that I invoke from python win 32 does not have any
> entry
>> > for internet explorer.
>> > I tried to find the CLSID for IE
> 3050F613-98B5-11CF-BB82-00AA00BDCE0B
>> > but I get an exception
>> > b) Also one of the examples suggest that following code should work
>> >
>> >> mod = EnsureModule(...)
>> >
>> >> class MyEvents(mod.IDocumentEvents):
>> >>    # your methods here....
>> >
>> >> handler = MyEvents(ie.document)
>> >
>> >> # handler should start recieving events.
>> >
>> > however, what CLSID is to be used in EnsureModule... . I tried with
> a
>> > few but I always get the error 'NoneType' object has no attribute
>> > 'IDocumentEvents'
>> >
>> >
>> > An example that 'works' will be very useful
>> >
>>
>>
>>
>> ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet
> News==----
>> http://www.newsfeeds.com The #1 Newsgroup Service in the World!
> 120,000+ Newsgroups
>> ----= East and West-Coast Server Farms - Total Privacy via Encryption
> =----
> 




----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! >100,000 Newsgroups
---= East/West-Coast Server Farms - Total Privacy via Encryption =---


From tjreedy at udel.edu  Fri May 13 14:54:45 2005
From: tjreedy at udel.edu (Terry Reedy)
Date: Fri, 13 May 2005 14:54:45 -0400
Subject: pyvm -- faster python
References: <mailman.164.1115548611.29826.python-list@python.org><1115561483.741761.212140@f14g2000cwb.googlegroups.com><m102l2-9qr.ln1@home.rogerbinns.com><mailman.264.1115716603.29826.python-list@python.org><vu38l2-k5v.ln1@home.rogerbinns.com><7xvf5qbir1.fsf@ruckus.brouhaha.com><nt98l2-1e.ln1@home.rogerbinns.com><7xpsvymlse.fsf@ruckus.brouhaha.com><1115791624.856252.247890@z14g2000cwz.googlegroups.com><7x1x8el18e.fsf@ruckus.brouhaha.com><1115876410.813839.222080@g43g2000cwa.googlegroups.com><mailman.441.1115886157.29826.python-list@python.org><1115925027.360010.183480@g49g2000cwa.googlegroups.com>
	<42847381.9010800@ceid.upatras.gr>
Message-ID: <d62smn$l41$1@sea.gmane.org>


"Stelios Xanthakis" <sxanth at ceid.upatras.gr> wrote in message 
news:42847381.9010800 at ceid.upatras.gr...

> Also, for the other part of the thread, I think that bytecode may
> be in fact faster than machine code JIT.  Here is a theory:

>Suppose that for each algorithm there is the "ideal implementation"
>which executes at the speed limit where it can't be done any faster.
...
>Now for such very
> big programs bytecode has the advantage that it achieves very good
> code re-use;  everything is those 400kB of the libpython core and that
> does not increase with the size of the program.  In this case, bytecode
> is the driver that operates the buldozer (the buldozer being C).

This, of course, is exactly what CPython does.  Bytecodes index into a 
switch table that jumps to interface code that calls C routines, most of 
which have been optimized, on and off, for about 15 years.

>  So the
> theory is that for very complex programs a bytecode+core-library is
> closer to the ideal implementation than a JIT which produces/compiles
> megabytes of machine code.
>
> Evidence for that may be that all those JIT efforts don't get any
> great speed ups (psyco is different as it exposes static-ness).
>
> Of course, if we care about speed we'll use Pyrex to convert some
> heavy routines to C.  For example if we need FFT, it's madness to
> do it in the HLL.  Make it part of the buldozer.

And of course, it already is (replacing 'bulldozer' with 'set of 
construction equipment'), under the name NumPy or Numarray.  And both of 
these can take advantage of an Atlas implementation of the BLAS, when 
available, that is tuned to a specific platform with the intention of being 
the 'ideal implementation' of the Basic Linear Algebra Subroutines for that 
platform.

So I congratulate you on conceptually re-inventing Python + C extensions. 
But I haven't understood yet what conceptual variations you have or plan to 
make on the current implementation.

Current CPyVM simulates a stack machine.  This has the virtual of 
simplicity and clarity even for someone like me who has never seriously 
written assembler. People have made proposals to switch to simulating a 
(more complex) register machine, with a new set of bytecodes, that 
theoretically would be faster.  Do you have any opinion on this issue?  You 
seem to like the current byte code set while wanting to run faster.

Terry J. Reedy





From rschroev_nospam_ml at fastmail.fm  Mon May  2 13:15:30 2005
From: rschroev_nospam_ml at fastmail.fm (Roel Schroeven)
Date: Mon, 02 May 2005 17:15:30 GMT
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <1115006098.987811.171180@f14g2000cwb.googlegroups.com>
References: <d4u60o$akh$1@news2.netvision.net.il>
	<mailman.47.1114818531.14961.python-list@python.org>
	<1114924100.296223.114020@g14g2000cwa.googlegroups.com>
	<1114927892.321086.60190@z14g2000cwz.googlegroups.com>
	<zX%ce.78213$ft1.5056576@phobos.telenet-ops.be>
	<1115006098.987811.171180@f14g2000cwb.googlegroups.com>
Message-ID: <Setde.79427$1W7.5154848@phobos.telenet-ops.be>

Dan Bishop wrote:

> Roel Schroeven wrote:
> 
>>Dan Bishop wrote:
>>
>>
>>>Dan Bishop wrote:
>>>
>>>Correction: Now I'm stuck on Level 11.  I think I'm supposed to do
>>>something with the pixels in the image, but what?
>>
>>Me too. I've tried making different images out of the even and the
> 
> odd
> 
>>pixels, but nothing interesting happened. I tried to combine both
> 
> images
> 
>>in various ways (using the Gimp), but that also seemed to be a dead
> 
> end.
> 
> You only got 2 images?
> 
> *** SPOILER ALERT ***
[...]

Is that on the original image, or the new one? I solved it with the new 
one, but I'm still unable to do find the solution using the original one.

-- 
If I have been able to see further, it was only because I stood
on the shoulders of giants.  -- Isaac Newton

Roel Schroeven


From flamesrock at gmail.com  Wed May 11 16:42:26 2005
From: flamesrock at gmail.com (flamesrock)
Date: 11 May 2005 13:42:26 -0700
Subject: Python Documentation (should be better?)
In-Reply-To: <mailman.398.1115843305.29826.python-list@python.org>
References: <5C99C308457E6D4EA5448EA52A66004A675A6E@or.mxim.com>
	<17026.26789.592527.975821@montanaro.dyndns.org>
	<mailman.398.1115843305.29826.python-list@python.org>
Message-ID: <1115844146.719570.158550@g47g2000cwa.googlegroups.com>

I don't know what you guys are talking about!!

In idle:

help(module)


I love the way python handles documentation. Its not invansive



From peter at engcorp.com  Thu May 26 07:51:15 2005
From: peter at engcorp.com (Peter Hansen)
Date: Thu, 26 May 2005 07:51:15 -0400
Subject: Just remember that Python is sexy
In-Reply-To: <du7is16wiug.fsf@mozart.cc.tut.fi>
References: <1116899839.323185.58350@g49g2000cwa.googlegroups.com>
	<O9v*jQrPq@news.chiark.greenend.org.uk>
	<v8adndXwp-hF4gnfRVn-ig@powergate.ca>
	<du7is16wiug.fsf@mozart.cc.tut.fi>
Message-ID: <a8edne9qDJeiJQjfRVn-qw@powergate.ca>

Ville Vainio wrote:
>>>>>>"Peter" == Peter Hansen <peter at engcorp.com> writes:
>     Peter> Sion Arrowsmith wrote:
>     >> But can you come up with a method for remembering which way
>     >> round str.find() and str.index() are?
> 
>     Peter> Don't use "str" and you won't have anything to remember:
> 
>     Peter> 'foo bar baz'.find('spam')
>     Peter> 'spanish inquisition'.index('parrot')
> 
> But which one raises an exception, and which one returns -1?

Ah, is that what Sion meant by "which way around"?  Obviously that was 
an ambiguous question, since I thought he was referring to the order of 
the arguments.

My answer to the other question, unfortunately, is "I just type one of 
them at an interpreter prompt and see which result I get".  Much faster 
than checking the docs...    ;-)

-Peter


From ben.champion at gmail.com  Tue May  3 06:31:30 2005
From: ben.champion at gmail.com (FLChamp)
Date: 3 May 2005 03:31:30 -0700
Subject: odeint function in SciPy
In-Reply-To: <mailman.45.1115062535.6583.python-list@python.org>
References: <1114630203.755082.285020@l41g2000cwc.googlegroups.com>
	<mailman.2597.1114631083.1799.python-list@python.org>
	<2617fd5d.0505021009.3e6ddb21@posting.google.com>
	<mailman.45.1115062535.6583.python-list@python.org>
Message-ID: <1115116290.650118.252460@o13g2000cwo.googlegroups.com>

Thanks for your help! I don't suppose you happen to know what order
this method is?



From pgmoscatt at optushome.com.au  Sat May 14 07:05:47 2005
From: pgmoscatt at optushome.com.au (Peter Moscatt)
Date: Sat, 14 May 2005 21:05:47 +1000
Subject: Returning Date As String ?
Message-ID: <pan.2005.05.14.11.05.47.499875@optushome.com.au>

I am wanting to return the system date using the following:

	date.today()

How would I then convert this to a string ?

Pete



From edvard+news at majakari.net  Fri May 13 03:32:16 2005
From: edvard+news at majakari.net (Edvard Majakari)
Date: Fri, 13 May 2005 10:32:16 +0300
Subject: Python features
References: <1115536911.106882.166230@z14g2000cwz.googlegroups.com>
	<mailman.162.1115539371.29826.python-list@python.org>
	<op.sqofc51np2c5o9@hector.domek>
	<pan.2005.05.13.02.30.39.160177@dalkescientific.com>
	<mailman.2.1115967920.29328.python-list@python.org>
Message-ID: <873bsreg3j.fsf@titan.staselog.com>

"Fredrik Lundh" <fredrik at pythonware.com> writes:

> does that apply to sturgeon's law itself?
>
> (fwiw, this is of course why google displays 10 results on the
> first page. according to the law, one of them is always exactly
> what you want).

+ 1 QOTW :-)

-- 
# Edvard Majakari		Software Engineer
# PGP PUBLIC KEY available    	Soli Deo Gloria!

$_ = '456476617264204d616a616b6172692c20612043687269737469616e20'; print
join('',map{chr hex}(split/(\w{2})/)),uc substr(crypt(60281449,'es'),2,4),"\n";


From fredrik at pythonware.com  Thu May 12 13:45:28 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 12 May 2005 19:45:28 +0200
Subject: Problem combining python code and html
References: <42822b3d$0$653$ba624c82@nntp02.dk.telia.net><mailman.381.1115831593.29826.python-list@python.org>
	<42825b43$0$650$ba624c82@nntp02.dk.telia.net>
Message-ID: <d60496$5km$1@sea.gmane.org>

"Hansan" wrote:

> The change did remove the error message, and I can see what was wrong.
> However there is now a new problem, the only thing that is displayed is one
> single character and that is: <
>
> Do you or anyone else have a suggestion to what the cause to this new
> problem is ?

my fault; I somehow expected you to figure out that you had to fix up
the rest of the function as well, and forgot that you were just cutting
and pasting from a rather lousy example, without understand all the de-
tails.

here's the rest of the relevant code:

    if SubResult[1] == 0:
        raise BadTemplateException

    print "Content-Type: text/html\n\n"
    print SubResult[0]

in the original code, re.subn returns a 2-tuple containing the new string
and a count, but replace only returns the string.  the easiest way to fix
this is to get rid of the BadTemplate check; just replace the above code
with:

    print "Content-Type: text/html\n\n"
    print SubResult

if you really want the BadTemplateException, you can do:

    if SubResult == TemplateInput:
        raise BadTemplateException

    print "Content-Type: text/html\n\n"
    print SubResult

hope this helps!

(I was about to add a short comment on how this illustrates why examples
are not a universal solution to all documentation problems, unless they're
carefully written and carefully documented.  but such talk will only offend
the PHP crowd, so I better skip that)

</F>





From kerny404 at gmail.com  Sun May  8 06:01:07 2005
From: kerny404 at gmail.com (andrea crotti)
Date: Sun, 8 May 2005 12:01:07 +0200
Subject: global lists
Message-ID: <a8a62be605050803017c447138@mail.gmail.com>

Hi everbybody again,
I have a little "problem", I don't understand the reason of this:

a = [10,1,2,3]
def foo():
  global a
  for el in a:
    el = el*2

This doesn't make any difference, if I do
def foo():
  global a
  a[0] = 4

But

def foo():
  global a
  for n in range(len(a)):
    a[n] = a[n]*2

Doesn't work either...
So I think that's pretty weird, why this happen?
I have to create a new list and assign it back to get it working??
Thaks


From twic at urchin.earth.li  Sun May  8 18:24:41 2005
From: twic at urchin.earth.li (Tom Anderson)
Date: Sun, 8 May 2005 23:24:41 +0100
Subject: Curve fitting
In-Reply-To: <117shvi5c3plk79@corp.supernews.com>
References: <Pine.LNX.4.44.0505081237260.20692-100000@urchin.earth.li>
	<117shvi5c3plk79@corp.supernews.com>
Message-ID: <Pine.LNX.4.44.0505082320080.1687-100000@urchin.earth.li>

On Sun, 8 May 2005, Grant Edwards wrote:

> On 2005-05-08, Tom Anderson <twic at urchin.earth.li> wrote:
>
> > I'd like to fit a curve (a rectangular hyperbola, in fact) to
> > some data points as part of a program i'm writing. Can anyone
> > suggest a package which would help me do this?
>
> I use the LeastSquares function in Scientific Python:
>
>   http://starship.python.net/~hinsen/ScientificPython/

I'll check that out, cheers.

> > A bit of googling suggests that SciPy might be what i want. Does that
> > sound likely?
>
> Sure.

I ended up using scipy.optimize.minpack.leastsq, and it works brilliantly.
The interface is a bit awkward - it wants a function from a guess at the
parameters to a list of residuals; i'd rather give it a function from
parameters + x-coordinate to y-coordinate plus a set of points, and have
it work out the residuals for me - so i wrote a little wrapper to make it
suit me better, and now i'm cooking with gas. The only problem is that the
optimisation doesn't converge, but i think that's probably a bug in my
code!

tom

-- 
Punk's not sexual, it's just aggression.



From martin at v.loewis.de  Mon May  9 17:44:35 2005
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Mon, 09 May 2005 23:44:35 +0200
Subject: Trouble saving unicode text to file
In-Reply-To: <gq0t7194aiuock5t67gqvudokla2lr7hbp@4ax.com>
References: <1115500976.571232.76100@z14g2000cwz.googlegroups.com>
	<427DDAA5.9020606@v.loewis.de>
	<t4qr71h88us709h4es4oa4fbamnkgkj0sj@4ax.com>
	<427E5136.4000300@v.loewis.de>
	<gq0t7194aiuock5t67gqvudokla2lr7hbp@4ax.com>
Message-ID: <427FD9C3.6070207@v.loewis.de>

John Machin wrote:
> Terminology disambiguation: what I call "users" wouldn't know what
> 'cp1252' and 'iso-8859-1' were. They're not expected to know. They
> just type in whatever characters they can see on their keyboard or
> find in the charmap utility. It's what I'd call 'admins' and
> 'developers' who should know better, but often don't.

I was talking about 'users' of Python, so they are 'developers'.
They often don't know what cp1252 is.

> 1. When exchanging data across systems, should not utf-8 be
> preferred???

It depends on the data, of course. People writing UTF-8 into
text files often find that their editors don't display them
correctly, in which case UTF-8 might not be the best choice.
For example, the Python source code in CVS is required to be
iso-8859-1, primarily because this is what interoperates best
across all development platforms.

For data in XHTML, the answer would be different: every XML
processor is supposed to support UTF-8.

> 2. If the Windows *users* have been using characters that are in
> cp1252 but not in iso-8859-1, then attempting to convert to iso-8859-1
> will cause an exception. 

Correct.

> I find it a bit hard to imagine that the euro sign wouldn't get a fair
> bit of usage in Swedish data processing even if it's not their own
> currency.

Yes, so the question is how to represent it. It all depends on the
application, but it is safer to only assume iso-8859-1 for the moment,
unless it is guaranteed that all code that reads the file in really
knows what cp1252 is, and what \x80 means in that charset.

> 3. How portable is a character set that doesn't include the euro sign?

Well, how portable is ASCII? It doesn't support certain characters,
sure. If you don't need these characters, this is not a problem. If
you do need the extra characters, you need to think thoroughly what
encoding meets your needs best. I was merely suggesting that cp1252
is often used without that thought, causing moji-bake later.

If representation of the euro sign is an issue, the choices are
iso-8859-15, cp1252, and UTF-8. Of those three, I would pick
cp1252 last if at all possible, because it is specific to a
vendor (i.e. non-standard)

Regards,
Martin


From phillip.watts at anvilcom.com  Mon May  9 21:13:49 2005
From: phillip.watts at anvilcom.com (phil)
Date: Mon, 09 May 2005 20:13:49 -0500
Subject: Advice needed on __del__
References: <d5o1s1$8h3$1@sea.gmane.org>
	<d5obmp$cqh$1@sea.gmane.org>	<427FBAD4.3070004@anvilcom.com>
	<d5ogv2$2k9$1@sea.gmane.org> <42800279.3B26FFF3@pauahtun.org>
Message-ID: <42800ACD.5060802@anvilcom.com>


> 
> Fredrik Lundh wrote:
> 
>>Python is not C++.
>>


Praise the Lord.


>>
> 
> I dunno if this makes QOTW, but I vote we put this in our list text that
> goes out with each and every list message.
> 
> There will still be a lot of people who don't read it, but at least
> we'll get to say, "We told you so."

I'm probably dense and don't quite get the point, even though I
have coded about 200,000 lines of Python and coded .5 million lines of
C before there was a C++

A class instance based language doesn't have to BE C++ to have a
destructor method.

All I wanted to know is: is the apparent treatment of __del__
which SEEMS to work fine for me in 2.3.4 deprecated or mangled
in some later release or future plans.
If someone doesn't know the answer to this question or if noone
knows the answer to this question, I will still love and
respect the Python Community.  In large part cause it ain't C++>



From asbjs at stud.ntnu.no  Tue May 24 02:27:32 2005
From: asbjs at stud.ntnu.no (=?iso-8859-1?q?Asbj=F8rn_S=E6b=F8?=)
Date: 24 May 2005 08:27:32 +0200
Subject: Running a python program during idle time only
References: <1116637560.499307.28700@o13g2000cwo.googlegroups.com>
	<mailman.7.1116821147.18027.python-list@python.org>
	<1116869538.611233.264960@g14g2000cwa.googlegroups.com>
Message-ID: <87vf59i1ez.fsf@stud.ntnu.no>

"los" <carlos80 at gmail.com> writes:

> Thanks for all the replies.
> 
> I did try using nice under windows.  I created a java program that
> would just loop and print numbers on the screen.  Even when I ran that
> simple program with nice, (lets call it program A) as soon as I started
> the program the cpu went all the way to 100% usage.  Then when I ran
> another program that did the same thing (lets call it program B),
> program A halted to let B finish, then it started again.  Nevertheless
> it still hogged all the cpu while I was using the computer.

Well, shouldn't it?  You don't want to waste CPU cycles.  If   your
program is niced to a low priority, it will run _only when more
important tasks doesn't run_.  I.e.: It stays out of the way when
higher priority processes claim the computer, while still utilizing
the rest of the computational power.

My experience is that properly niced processes can use almost 100
percent CPU, and still not have any noticeable effect on my other use
of the computer.

Asbj.S.
-- 
Asbj?rn S?b?, post.doc. 
Centre for Quantifiable Quality of Service in Communication Systems
Norwegian University of Science and Technology
<URL: http://www.q2s.ntnu.no/ >


From janeaustine50 at hotmail.com  Thu May  5 05:17:14 2005
From: janeaustine50 at hotmail.com (janeaustine50 at hotmail.com)
Date: 5 May 2005 02:17:14 -0700
Subject: Strange behaviour of __cmp__
Message-ID: <1115284634.318269.129610@g14g2000cwa.googlegroups.com>

See the following...

>>> class X(list):
	def __cmp__(self,anX):
		print "comparing from",id(self)
		return cmp(self.v,anX.v)


>>> x1=X()
>>> x2=X()
>>> x1.v=-1
>>> x2.v=100
>>> x1>x2
False
>>> x1<x2
False

I expected x1>x2 or x1<x2 were False and True respectively.



From michele.simionato at gmail.com  Tue May  3 00:49:33 2005
From: michele.simionato at gmail.com (Michele Simionato)
Date: 2 May 2005 21:49:33 -0700
Subject: empty lists vs empty generators
In-Reply-To: <509534af.0505021514.5e49aa2@posting.google.com>
References: <509534af.0505021514.5e49aa2@posting.google.com>
Message-ID: <1115095773.279907.242530@g14g2000cwa.googlegroups.com>

Starting from Python 2.4 we have tee in the itertools
module, so you can define the following:

from itertools import tee

def is_empty(it):
    it_copy = tee(it)[1]
    try:
        it_copy.next()
    except StopIteration:
        return True
    else:
        return False

It works with generic iterables too.

                     Michele Simionato



From nav+posts at bandersnatch.org  Thu May  5 15:37:33 2005
From: nav+posts at bandersnatch.org (Nick Vargish)
Date: 05 May 2005 15:37:33 -0400
Subject: So many things that need to be decided....
References: <G3Ade.1022$fF6.12717@news1.mts.net>
	<86sm1584l4.fsf@guru.mired.org>
	<zuMde.1076$fF6.14053@news1.mts.net>
	<mailman.108.1115135225.6583.python-list@python.org>
Message-ID: <873bt1h3b6.fsf@localhost.localdomain>

Mage <mage at mage.hu> writes:

> - identing with tabs

Indenting with tabs is pretty much frowned upon in Python, as Guido
relates in PEP 8:

http://www.python.org/peps/pep-0008.html

I guess it doesn't matter much if you are the only person who will
ever touch your code, and you never, ever, accidentally mix spaces and
tabs...

Nick

-- 
# sigmask  (lambda deprecation version) 20041028 || feed this to a python
print ''.join([chr(ord(x)-1) for x in 'Ojdl!Wbshjti!=ojdlAwbshjti/psh?'])


From kay.schluehr at gmx.net  Sun May 22 02:14:05 2005
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: 21 May 2005 23:14:05 -0700
Subject: None module reference
In-Reply-To: <V%Sje.7552$Wp.922649@news20.bellglobal.com>
References: <V%Sje.7552$Wp.922649@news20.bellglobal.com>
Message-ID: <1116742445.467317.55000@g43g2000cwa.googlegroups.com>


Stefan Seefeld wrote:
> hello,
>
> I'v run into a bug that I find hard to understand:
>
> In a python module of mine I import system modules
> ('sys', say) and then use them from within some functions.
>
> However, during program termination I'm calling
> one such function and the module reference ('sys')
> is 'None' !

Do You register Your function using atexit() ?

This works perfectly fine and as expected for me. I would wonder if the
interpreter was shut down and tries to execute a cleanup thereafter.

Checkout following example code. You may also have a look at the
/lib/atexit.py module see how it works.

import atexit
import sys
def foo():    
    print sys
    
atexit.register(foo)
 
Ciao,
Kay



From saravanan.d at siemens.com  Tue May 10 01:32:45 2005
From: saravanan.d at siemens.com (Saravanan D)
Date: Tue, 10 May 2005 11:02:45 +0530
Subject: Exception in Python 2.3.3 Interpreter
References: <1114434259.853654.272420@z14g2000cwz.googlegroups.com><d5n76t$pe0$2@news.mch.sbs.de>
	<mailman.202.1115642452.29826.python-list@python.org>
Message-ID: <d5ph21$2l9$2@news.mch.sbs.de>


"Fredrik Lundh" <fredrik at pythonware.com> wrote in message
news:mailman.202.1115642452.29826.python-list at python.org...
> "Saravanan D" <saravanan.d at siemens.com> wrote:
>
> > 03 023ffaa4 1e013182 00000000 055b1250 00637470 python23!cmp_outcome(int
op
> > = 88026108, struct _object * v = 0x00000001, struct _object * w =
> > 0x00000000)+0xa9 [F:\Python-2.3.3\Python-2.3.3\Python\ceval.c @ 3880]
> > 04 023ffb18 1e016ba4 014f3318 00000002 0099f170
python23!eval_frame(struct
> > _frame * f = 0x053f2bfc)+0x542
[F:\Python-2.3.3\Python-2.3.3\Python\ceval.c
> > @ 1965]
> > 05 023ffb30 1e016a69 0099f170 023ffb7c 00000002
> > python23!fast_function(struct _object * func = <Memory access error>,
struct
> > _object *** pp_stack = <Memory access error>, int n = <Memory access
error>,
> > int na = <Memory access error>, int nk = <Memory access error>)+0x94
>
> the above doesn't look very healthy.  does your application involve
> non-standard extensions (including extensions you've written your-
> self)?  does the extensions contain callbacks into Python code?
>

My application uses extension modules which devliers the callbacks to Python
Code. Im using SWIG 1.3.19 version to generate relevant python interfaces
for the C++ code.

In addition to that, the application uses Win32 extensions APIs.


Thanks in advance.





From Florian.Lindner at xgm.de  Wed May  4 10:10:05 2005
From: Florian.Lindner at xgm.de (Florian Lindner)
Date: Wed, 04 May 2005 16:10:05 +0200
Subject: Variable option count
Message-ID: <d5al3t$4q6$02$1@news.t-online.com>

Hello,
how can I give an arbitrary number of options in a automated way to a
function?

Example.

I've the list A =

[
        1
        2
        3
        ...
]

Now I want to give this list to a function so that it is the same for
function like:

f(1, 2, 3, ...)

How can I do that?

Thanks,
Florian


From tdelaney at avaya.com  Sun May 15 19:36:39 2005
From: tdelaney at avaya.com (Delaney, Timothy C (Timothy))
Date: Mon, 16 May 2005 09:36:39 +1000
Subject: Property,how to use it?
Message-ID: <338366A6D2E2CA4C9DAEAE652E12A1DE02520513@au3010avexu1.global.avaya.com>

Pidaqing at mail.iame.cn wrote:

> What is the "property" mean in the python? Who can explain it
> for me? I don't know how to use it.

http://www.catb.org/~esr/faqs/smart-questions.html

Tim Delaney 


From ajikoe at gmail.com  Mon May  9 09:23:41 2005
From: ajikoe at gmail.com (ajikoe at gmail.com)
Date: 9 May 2005 06:23:41 -0700
Subject: replace string patern with different value
Message-ID: <1115645021.903836.262590@z14g2000cwz.googlegroups.com>

Hello,

I would like to replace string with different values,
For example :
source = 'kode1 bla bla kode1 bla kode1'
I have a list with each member will replace each of kode1.
L = [11,22,33]
So the new source will become:
newsource = '11 bla bla 22 bla 33'

How can I do it ? I tried to find using string built in function
replace, but it will replace pattern with the same value.

For this moment I think about change the string into list using
string.split and then check one by one and replace it and then convert
into string with addition space in the right and left of each element
list.

Is there any better idea ?

Pujo



From fredrik at pythonware.com  Thu May 12 13:32:53 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 12 May 2005 19:32:53 +0200
Subject: Python Polymorphism
References: <20050512163843.96642.qmail@web52609.mail.yahoo.com>
Message-ID: <d603hk$2u7$1@sea.gmane.org>

Carlos Moreira wrote:

>      How could I use Python polymorphism?
>      Which kind of structures Python give me to use
> polymorphism?
>      Where can I find specific documentation?

www.python.org

(have you read the tutorial?)

</F>





From nothingcanfulfill at gmail.com  Tue May 10 19:55:08 2005
From: nothingcanfulfill at gmail.com (ncf)
Date: 10 May 2005 16:55:08 -0700
Subject: Python Args By Reference
Message-ID: <1115769308.136143.74080@f14g2000cwb.googlegroups.com>

Hello all, I was wondering if there was any way to pass arguments
(integer and such) by reference (address of), rather than by value.

Many thanks in advance.

-Wes



From Sebastien.Boisgerault at gmail.com  Tue May  3 11:04:54 2005
From: Sebastien.Boisgerault at gmail.com (=?iso-8859-1?q?S=E9bastien_Boisg=E9rault?=)
Date: 3 May 2005 08:04:54 -0700
Subject: Documenting Python code.
In-Reply-To: <1115128200.628997@hqnntp01.autodesk.com>
References: <1115128200.628997@hqnntp01.autodesk.com>
Message-ID: <1115132694.505674.167610@f14g2000cwb.googlegroups.com>


Have a look at Epydoc (http://epydoc.sourceforge.net/), a documentation
system
that generates HTML and PDF docs. Plain text, Javadoc,
ReStructuredText,
and Epytext docstrings are handled gracefully.

ReStructuredText (or a suitable subset of RST) is probably the best
choice IMHO.

SB



From jstroud at mbi.ucla.edu  Sat May 28 14:09:28 2005
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Sat, 28 May 2005 11:09:28 -0700
Subject: a re problem
In-Reply-To: <1117259816.620245.34790@g43g2000cwa.googlegroups.com>
References: <1117259816.620245.34790@g43g2000cwa.googlegroups.com>
Message-ID: <200505281109.28255.jstroud@mbi.ucla.edu>


py> import re
py> target = 'blah'
py> text = 'yaddah blah yaddah yaddah'
py> ext = re.sub(r'\b%s\b' % target,'',text)
py> ext
'yaddah  yaddah yaddah'


On Friday 27 May 2005 10:56 pm, cheng wrote:
> hi,all, i try to replace every target word found in the text
>
>  for target in splitText:
>         if stopwords.find(target) >= 0 :
>             text = re.sub(r'\b%s\b','',text) &target
>
> when i using the statment:
>
> text = re.sub(r'\b%s\b','',text) &target
>
>  get error : unsupported operand type(s) for &: 'str' and 'str'
>
> is it some idea that can modity it and make it work?

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From gsakkis at rutgers.edu  Sun May  1 17:18:49 2005
From: gsakkis at rutgers.edu (George Sakkis)
Date: 1 May 2005 14:18:49 -0700
Subject: Numeric/Numarray equivalent to zip ?
References: <1114849922.518669.105590@l41g2000cwc.googlegroups.com>
	<d51uv7$9hj$03$1@news.t-online.com>
	<1114948757.585835.8180@z14g2000cwz.googlegroups.com>
	<d52iao$169$05$1@news.t-online.com>
Message-ID: <1114982329.952155.167370@o13g2000cwo.googlegroups.com>

"Peter Otten" <__peter__ at web.de> wrote:
> George Sakkis wrote:
>
> > Though not the fastest to execute; using concatenate instead of
> > initializing an array from a list [a,a] is more than 2,5 time
faster in
> > my system (~4.6 vs 11.8 usec per loop according to timeit.py), and
it's
> > not harder either.
>
> That surprises me. I would expect essentially the same amount of
> data-shuffling.

Here are some timing comparisons of four versions I tried. The first
three work on 1D arrays directly and the fourth on 2D row arrays (i.e.
shape (1,len(a))):

from Numeric import *

# 11.5 usec/loop
def ziparrays_1(*arrays):
    return array(arrays)

# 8.1 usec/loop
def ziparrays_2(*arrays):
    a = zeros((len(arrays),len(arrays[0])))
    for i in xrange(len(arrays)):
        a[i] = arrays[i]
    return a

# 13.6 usec/loop
def ziparrays_3(*arrays):
    return reshape(concatenate(arrays), (len(arrays),len(arrays[0])))

# 4.6 usec/loop
def ziparrays_4(*arrays):
    return concatenate(arrays)


So if one has the choice, it's better to start with 2D arrays instead
of 1D. Comparing versions 3 and 4, it's surprising that reshape takes
twice as much as concatenate.

George



From richie at entrian.com  Wed May 11 08:06:20 2005
From: richie at entrian.com (Richie Hindle)
Date: Wed, 11 May 2005 13:06:20 +0100
Subject: Problems with csv module
In-Reply-To: <d5sr4v$2a0$04$1@news.t-online.com>
References: <d5sngn$l4$03$1@news.t-online.com>
	<mailman.338.1115809896.29826.python-list@python.org>
	<d5spph$ktm$01$1@news.t-online.com>
	<mailman.339.1115811314.29826.python-list@python.org>
	<d5sr4v$2a0$04$1@news.t-online.com>
Message-ID: <hus381d989gldopf64q2n5ihg5m8o8h7dv@4ax.com>


[Florian]
> How can I convert Unicode to ASCII?

You're writing code using Unicode and you don't know how to convert it
ASCII?  You need to do some reading.  Here are a few links - Google can
provide many more:

  http://docs.python.org/tut/node5.html#SECTION005130000000000000000
  http://diveintopython.org/xml_processing/unicode.html
  http://www.jorendorff.com/articles/unicode/python.html

The short answer to your question is this:

>>> U = u'My string'
>>> A = U.encode('ascii')
>>> print U, type(U), A, type(A)
My string <type 'unicode'> My string <type 'str'>

but you should really do some reading.

-- 
Richie Hindle
richie at entrian.com



From rrr at ronadam.com  Sat May  7 20:23:35 2005
From: rrr at ronadam.com (Ron Adam)
Date: Sat, 07 May 2005 20:23:35 -0400
Subject: New Python regex Doc
In-Reply-To: <1115508491.462229.294020@o13g2000cwo.googlegroups.com>
References: <1113301533.054410.203710@z14g2000cwz.googlegroups.com>	<mailman.1813.1113355346.1799.python-list@python.org>	<1113856843.023012.165500@l41g2000cwc.googlegroups.com>	<1113908069.264676.207090@g14g2000cwa.googlegroups.com>	<1115328523.852744.110390@f14g2000cwb.googlegroups.com>	<1115423751.016177.250650@o13g2000cwo.googlegroups.com>	<1115444726.627426.172260@g14g2000cwa.googlegroups.com>
	<1115508491.462229.294020@o13g2000cwo.googlegroups.com>
Message-ID: <427D5C07.8080704@ronadam.com>

Xah Lee wrote:
> Let me expose one another fu....

Hello Xah,

I think you will continue to have difficulty getting respect on this 
matter as long as you show disrespect to those who have come before you.

When you refer to the documentation as being f'ing stupid, and other 
disrespectful terms, you are in an indirect, or depending on your 
intent, directly insulting the people who have done their best, as 
*volunteers* in most cases, to provide the existing documentation.

Text is never F'ing, Stupid, or any of the other terms you refer to as 
it being.  However it can be uninformative, hard to read, confusing, and 
even plain wrong.  But it is only text, and does not have a mind of it's 
own.  Referring to it as if it does, in such angry tones, reflects back 
on yourself and gives others a poor impression of you.

At the start, you choose to approach this matter as a personal and 
competitive agenda, ie.. You vs those who came before you.  Is this 
really the correct way to do this?  You don't have to insult those who 
came before you in order to make your case.  If you do, then maybe your 
case isn't strong enough.  But even this is wrong because it isn't a 
competition.

I suppose that if you respectfully offer something even a little better 
it would be respectfully accepted, after due review of course.  You will 
probably even get many helpful suggestions along they way because you 
will have created a situation where every one wins.

But by approaching it in the way you are, you make it very hard for 
people to support you, because to do so, they have to take on the role 
of losers in order for you to be a winner.

Just some thoughts, you might consider.

Cheers, and good luck with whatever aproach you decide.



From brian at mirror.org  Wed May 18 17:32:16 2005
From: brian at mirror.org (brian at mirror.org)
Date: 18 May 2005 14:32:16 -0700
Subject: Is Python suitable for a huge, enterprise size app?
In-Reply-To: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>
Message-ID: <1116451936.514126.66500@g44g2000cwa.googlegroups.com>


john67 wrote:
> [...] that will cost us tens-of-millions to develop.
> [...]
> Right now it looks like Java is the language of choice that the app
> will be developed in. However, I have been looking and reading a lot
> about Python recently [...]

Ignoring the technical aspects: if you have good group of people that
already know Java, and don't know Python, then use Java for this huge
project.  Do a smaller project in Python first for the learning curve,
to build expertise and confidence, etc.  People are more important than
programming language.

Brian.



From harri.pasanen at trema.com  Wed May 25 11:46:17 2005
From: harri.pasanen at trema.com (pasa)
Date: 25 May 2005 08:46:17 -0700
Subject: namespaces in eval(): spot error in 3 line program
Message-ID: <1117035976.997084.305310@g47g2000cwa.googlegroups.com>

I'm an old time python user, but just got bitten by namespaces in eval.
If this is an old discussion somewhere, feel free to point me there.

Based on the documentation, I would have expected the following to
work:

def foo(k): print k; print a

ns = {'a':1, 'foo': foo}
eval('foo(2)', ns)

But it does not, complete session:

[harri at labsdevgrid1 ~]$ python
Python 2.4 (#2, Feb 13 2005, 22:08:03)
[GCC 3.4.3 (Mandrakelinux 10.1 3.4.3-3mdk)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> def foo(k): print k; print a
...
>>> ns = {'a':1, 'foo': foo}
>>> eval('foo(2)', ns)
2
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File "<string>", line 0, in ?
  File "<stdin>", line 1, in foo
NameError: global name 'a' is not defined
>>>

huh?  I'd almost be tempted to call this a bug?

Playing with locals() and globals() I see that this one works,
which I would not have expected to work:

def foo(k): print k; print ns['a']

ns = {'a':1, 'foo': foo}
eval('foo(2)', ns)

Prints out
2
1

Do functions carry their own pointer to global namespace,
which gets defined at function compile time, or what is
happening here?

-Harri



From a.rottmann at gmx.at  Tue May 24 07:39:14 2005
From: a.rottmann at gmx.at (Andreas Rottmann)
Date: Tue, 24 May 2005 13:39:14 +0200
Subject: What are OOP's Jargons and Complexities?
References: <1116843761.619249.144790@g47g2000cwa.googlegroups.com>
	<bAske.14563$yx.14338@fe08.lga>
	<3584469.Aerji1NdQr@yahoo.com> <3cWdnbtAM6aZ6g_fRVn-2w@rcn.net>
Message-ID: <878y24yhst.fsf@ivanova.rotty.yi.org>

Wibble <Wibble at Mailinator.com> writes:

> Java or even C is more strongly typed than lisp or tcl which
> dont really have a concept of a typed variable.
> Lisp only does runtime type checking unless you do wierd
> unnatural things.
>
You get terminology totally wrong here. As already said, Lisp is
stronger typed than C, but C is statically typed, whereas Lisp is
dynamically typed. In Lisp (or Scheme), all variables have types:

(define foo #(1 2 3))
(vector? foo) => #t
(boolean? foo) => #t

See http://cliki.tunes.org/Type%20System.

Rotty
-- 
Andreas Rottmann         | Rotty at ICQ      | 118634484 at ICQ | a.rottmann at gmx.at
http://yi.org/rotty      | GnuPG Key: http://yi.org/rotty/gpg.asc
Fingerprint              | DFB4 4EB4 78A4 5EEE 6219  F228 F92F CFC5 01FD 5B62
v2sw7MYChw5pr5OFma7u7Lw2m5g/l7Di6e6t5BSb7en6g3/5HZa2Xs6MSr1/2p7 hackerkey.com

Python is executable pseudocode, Perl is executable line-noise.


From frr at THOU_SHALL_NOT_SPAMeasyjob.net  Wed May 25 11:57:49 2005
From: frr at THOU_SHALL_NOT_SPAMeasyjob.net (Fernando Rodriguez)
Date: Wed, 25 May 2005 17:57:49 +0200
Subject: Trouble with regexes
Message-ID: <qu79919l7bfslbujq20km6diqr6uo2nd04@4ax.com>

Hi,

I'm trying to write a regex that matches a \r char if and only if it
is not followed by a \n (I want to translate text files from unix
newlines to windows\dos).

I tried this, but it doesn't work:
p = re.compile(r'(\r)[^\n]', re.IGNORECASE)

it still matches a string such as r'\r\n'



From Gerald.Klix at klix.ch  Wed May 25 07:44:06 2005
From: Gerald.Klix at klix.ch (Gerald Klix)
Date: Wed, 25 May 2005 13:44:06 +0200
Subject: open file in dir independently of operating system
In-Reply-To: <1117021114.316734.117480@o13g2000cwo.googlegroups.com>
References: <1117021114.316734.117480@o13g2000cwo.googlegroups.com>
Message-ID: <42946506.3070903@klix.ch>

Hi,
it`s

import os
f = open( os.path.join( dir , 'configuration.smo' ), 'r' )

HTH,
Gerald

Joerg Schuster schrieb:
> Hello,
> 
> 
> I want to open the file 'configuration.smo' that is in directory dir.
> Yet, I don't know on which os my program is being run. On Unix I would
> say:
> 
> f = open(dir + '/configuration.smo', 'r')
> 
> What is the os-independent version of this line?
> 
> (I have read the manual of the module os, but I didn't see how to do
> it.)
> 
> 
> J?rg Schuster
> 

-- 
GPG-Key: http://keyserver.veridis.com:11371/search?q=0xA140D634



From anthra.norell at tiscalinet.ch  Mon May 16 07:07:25 2005
From: anthra.norell at tiscalinet.ch (Anthra Norell)
Date: Mon, 16 May 2005 13:07:25 +0200
Subject: BluWater: God is not a man
References: <1115824563.613661.169620@g47g2000cwa.googlegroups.com><1115839435.018664.70230@f14g2000cwb.googlegroups.com><d5u0h8$2i0$1@news1nwk.SFbay.Sun.COM>
	<1115856288.290025.64560@g14g2000cwa.googlegroups.com>
Message-ID: <01a201c55a07$718d8c60$0201a8c0@mcuf7>

----- Original Message -----
From: "flamesrock" <flamesrock at gmail.com>
Newsgroups: microsoft.public.windowsxp.network_web,
rec.music.beatles,rec.music.makers.guitar.acoustic,
alt.showbiz.gossip,comp.lang.python
To: <python-list at python.org>
Sent: Thursday, May 12, 2005 2:04 AM
Subject: Re: BluWater: God is not a man


> I'm curious, why is everyone talking about jesus on comp.lang.python?

Because, unfortunately, winning arguments seems to be the main objective of
some posters rather than exchanging information and ideas. Their posts are
intended to be the last word on a subject, whatever its relevance.
Unsurprisingly, their last words aren't last words longer than it takes
another member of their fraternity to rank it second last.
     Food for thought on bandwidth. Mental bandwidth.

Frederic




From fredrik at pythonware.com  Mon May  9 11:12:12 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Mon, 9 May 2005 17:12:12 +0200
Subject: file corruption on windows - possible bug
References: <427F799E.2080002@bellsouth.net>
Message-ID: <d5nu6l$qg6$1@sea.gmane.org>

Jeremy Jones wrote:

> #################################
> file_dict = {}
>
> a_list = [("a", "a%s" % i) for i in range(2500)]
> b_list = [("b", "b%s" % i) for i in range(2500)]
> c_list = [("c", "c%s" % i) for i in range(2500)]
> d_list = [("d", "d%s" % i) for i in range(2500)]
>
>
> joined_list = a_list + b_list + c_list + d_list
>
> for key, value in joined_list:
>    outfile = file_dict.setdefault(key, open("%s.txt" % key, "w"))

you do realize that this opens the file again every time, so you end up having
4x2500 file handles pointing to 4 physical files.  that's a bad idea.

if you replace

    outfile = file_dict.setdefault(key, open("%s.txt" % key, "w"))

with

    outfile = file_dict.get(key)
    if outfile is None:
        file_dict[key] = outfile = open("%s.txt" % key, "w")

or, if you prefer,

    try:
        outfile = file_dict[key]
    except KeyError:
        file_dict[key] = outfile = open("%s.txt" % key, "w")

your code won't depend on any undefined behaviour, and will work properly
on all platforms.

</F> 





From pmilesbr at purdue.edu  Tue May 17 03:55:31 2005
From: pmilesbr at purdue.edu (Paris Miles-Brenden)
Date: Tue, 17 May 2005 02:55:31 -0500
Subject: printing arrays in shell, and .py association with idle
Message-ID: <000601c55ab5$ccca7d50$6401a8c0@HAL11000>

I have been using python for the last 3 years and feel it to be an excellent programming language.  However, I have run into a few snags or annoyances.  I am currently creating a computational physics simulation which requires large arrays and am using numeric, although this is not a list for numeric, I think that my question falls under python in general.


1.  My first problem is with printing these large arrays for debugging purposes.  Is there any way to prevent the python shell from word wrapping single array print statements?  I'm simply using:

print hamiltonian

where hamiltonian is an array of complex numbers.  Changing window size (default or otherwise) does not change this, and I have found the option no-where.


2.  Is there a foolproof way to associate .py files to open with IDLE, and when ending my program, not causing IDLE to quit?  I have tried various methods to do this but none have worked so far.


Thank you and please accept my apology if this is the wrong location for these questions.
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From dave at pythonapocrypha.com  Wed May 18 16:36:46 2005
From: dave at pythonapocrypha.com (Dave Brueck)
Date: Wed, 18 May 2005 14:36:46 -0600
Subject: Is Python suitable for a huge, enterprise size app?
In-Reply-To: <200505182108.03701.python@ehp2.hostinx.com>
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>	<428B8157.9080005@pythonapocrypha.com>
	<200505182108.03701.python@ehp2.hostinx.com>
Message-ID: <428BA75E.50005@pythonapocrypha.com>

EHP wrote:
>>Python has good database support, it works well on a wide range of
>>platforms, and it's great at tying together different processes, machines,
>>etc. - for example, it's fairly easy to get Python to access C code,
>>dynamic libraries, system APIs, and external programs. It's easier to test
>>than Java code as well, and the overal cost of change is lower.
> 
> 
> Python has good DB support - but only simple connectors (like JDBC).
> ORM in Java (like Hibernate) are much better than ORM in Python (probably the 
> best is sqlobject). How you can write huge OO app without ORM ?

I don't doubt that Hibernate is more mature, but having not used it, I can't 
really say how much better/worse it is than, say, sqlobject for Python. But, as 
you pointed out, there *are* ORM libraries for Python.

FWIW, the only times I've been involved in database-centric projects with a cost 
in the "tens of millions", the database team steered clear of any sort of any 
automatic ORM layer altogether. Depending on your application, an ORM can fall 
into the same category as, say, EJB - a nifty idea that looks great on paper but 
can cause more problems than it solves.

Just because the app itself is very OO, it doesn't always follow that the 
database level needs to be - there are lots and lots of problems for which 
normal RDBMS tables & joins are a pretty darn good fit. (I'm not trying to 
discount ORM layers or even object databases, just disagreeing with the notion 
that huge OO apps automatically require ORM)

Have fun,
-Dave


From gijs at globaltrack.com  Wed May 18 07:00:15 2005
From: gijs at globaltrack.com (Gijs Korremans)
Date: Wed, 18 May 2005 13:00:15 +0200
Subject: How to debug a multithreaded windowsNT servvice with Boa Constructor
Message-ID: <200505181105.j4IB5Gkj023236@mail.globaltrack.com>

Hi,

I'm trying to debug a multithreaded windowsNT service with Boa Constructor but it's not working.
I don't know how to debug a service (there's nothing on the internet about that) so I've made an extra module espacially for the debugger which starts all my threads. (if anyone knows how to debug a service, you're welcome to tell me)

This module is working fine and I can debug it but when I want to debug the threads it's not working.
I used a code similar like this one:
import ThreadOne
FirstThread = ThreadOne.ThreadOne()
FirstThread.start()
On the second line, I can walk through the __init__ with the debugger but after that the debugger is not working anymore: The debuggerwindow sais ready instaid of running but the thread is still updating the logfile which means it's still running.
I've used both hard (if hassattr(sys, 'breakpoint'): sys.breakpoint() ) and soft (the red dots) breakpoints

I'm currently using 5 threads but I've tried a test app with only 1 thread and I had the same problem.

I'm using Boa 0.4.0 with python 2.3 and wxPython 2.5.5


Kind regards, 


Gijs

--
This message has been scanned for viruses and
dangerous content by Network Sentry, and is
believed to be clean.
http://www.networksentry.co.za



From a at b.c  Mon May  9 00:20:02 2005
From: a at b.c (D H)
Date: Sun, 08 May 2005 23:20:02 -0500
Subject: Fredrik Lundh
In-Reply-To: <mailman.66.1115324909.29826.python-list@python.org>
References: <mailman.139.1115189526.6583.python-list@python.org><maednQfrx_iwL-XfRVn-hA@powergate.ca>	<Av-dnbF5u_SOpOffRVn-vQ@comcast.com>
	<mailman.66.1115324909.29826.python-list@python.org>
Message-ID: <k42dnWFaUMRQeePfRVn-pg@comcast.com>

Fredrik Lundh wrote:
> "D H" <a at b.c> wrote:
> 
> 
>>>Why do you think you need a regular expression?
>>>
>>>If another approach that involved no regular expressions worked much
>>>better, would you reject it for some reason?
>>
>>A regular expression will work fine for his problem.
>>Just match the digits separated by underscores using a regular
>>expression, then afterward check if the values are valid.
> 
> 
> you forgot to mention Boo here, Doug.  nice IronPython announcement,
> btw.  the Boo developers must be so proud of you.
> 
> </F>

You never learn, do you Fredrik.  I guess that explains why Boo will 
never be mentioned on the python daily site your pythonware business 
controls.

Here are some of Fredrik's funnier crazy rants right here:
http://www.oreillynet.com/pub/wlg/6291

Any that you perceive as competition and threatening to your consulting 
business really draws out your true nature.


From flamesrock at gmail.com  Wed May  4 13:50:02 2005
From: flamesrock at gmail.com (flamesrock)
Date: 4 May 2005 10:50:02 -0700
Subject: python+windows/linux -> write stdout text to always on top text?
In-Reply-To: <mailman.112.1115141423.6583.python-list@python.org>
References: <1115064842.454916.305970@f14g2000cwb.googlegroups.com>
	<mailman.87.1115114454.6583.python-list@python.org>
	<1115138497.567243.308570@z14g2000cwz.googlegroups.com>
	<mailman.112.1115141423.6583.python-list@python.org>
Message-ID: <1115229002.210021.141020@f14g2000cwb.googlegroups.com>

hmm... I guess its not possible as I feared :(

thanks anyways



From martin at v.loewis.de  Mon May 23 16:47:12 2005
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Mon, 23 May 2005 22:47:12 +0200
Subject: python24.zip
In-Reply-To: <mailman.36.1116872480.18027.python-list@python.org>
References: <mailman.249.1116595092.8733.python-list@python.org>	<428e0cc3$0$29954$9b622d9e@news.freenet.de>	<x7hdgw2zqi.fsf@handshake.de>	<428faddd$0$26322$9b622d9e@news.freenet.de>	<x7vf5bku5d.fsf@handshake.de>	<4290dc79$0$9989$9b622d9e@news.freenet.de>	<4291ea5b$1@nntp0.pdx.net>	<42921399.2050302@v.loewis.de>
	<mailman.36.1116872480.18027.python-list@python.org>
Message-ID: <42924150.9080504@v.loewis.de>

Robin Becker wrote:
> ie if we have N importers and F leading failure syspath entries before
> the correct one is found do we get order N*F failed stats/opens etc etc?

No. Each path hook is supposed to provide a decision as to whether this
is a useful item on sys.path only once; the importer objects themselves
are then cached (with some operation to clear the cache). Each path hook
may apply its own algorithm, e.g. looking at the syntactical structure
or the type of the sys.path item, so not all of them need stat/open
to determine whether they support the item.

The multiplicative behaviour rather results from the different type of
modules: each path item may carry .py, .pyc, .so, module.so, etc.

Regards,
Martin



From jepler at unpythonic.net  Thu May 19 08:27:31 2005
From: jepler at unpythonic.net (Jeff Epler)
Date: Thu, 19 May 2005 07:27:31 -0500
Subject: Byte-operations.
In-Reply-To: <loom.20050519T040152-792@post.gmane.org>
References: <loom.20050519T040152-792@post.gmane.org>
Message-ID: <20050519122728.GA18155@unpythonic.net>

In Python, "chr" gives a 1-byte string from a small integer, "ord" does
the reverse.  Strings are concatenated with "+" and substrings are taken
with the slice operator, s[pos1:pos2].

I'm not a visual basic expert, but it looks like these are the
operations the code below performs.

Jeff
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From phillip.watts at anvilcom.com  Mon May 30 08:48:19 2005
From: phillip.watts at anvilcom.com (phil)
Date: Mon, 30 May 2005 07:48:19 -0500
Subject: prime number
References: <1117421732.677244.237730@g49g2000cwa.googlegroups.com>	<86wtphtm3f.fsf@guru.mired.org>
	<1117435844.389867.193900@g49g2000cwa.googlegroups.com>
Message-ID: <429B0B93.1010404@anvilcom.com>


> What civil engineers need with all this programming is beyond me. 


One of my best friends and expartner and top civil-structural
engineers in the country (he built Dallas Reunion Arena and many
other complex structures) was an ace programmer in many languages.

He was not willing to just accept the results of canned packages,
he wanted to know where the answers came from and make software
that made sense to his engineers.

I presume you are young and if you wish to be an engineer and not
a salesman you must be eaten up with the desire to know
"How Stuff Works".  Computers are ubiquitous in engineering
and if you want to be the best, learn how they work.



From steven.bethard at gmail.com  Fri May  6 14:40:26 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Fri, 06 May 2005 12:40:26 -0600
Subject: min max of a list
In-Reply-To: <1115396805.064114.183010@f14g2000cwb.googlegroups.com>
References: <1115245476.036508.273930@g14g2000cwa.googlegroups.com>
	<gaCdnf8Pf9xj7-TfRVn-tQ@comcast.com>
	<1115259992.558123.189580@g14g2000cwa.googlegroups.com>
	<temdnRBabsR2_effRVn-gg@comcast.com>
	<1115396805.064114.183010@f14g2000cwb.googlegroups.com>
Message-ID: <JNCdnYvdNOGEJ-bfRVn-vQ@comcast.com>

querypk at gmail.com wrote:
> Hi Steve!
> I am not sure if I was clear with my previous post .Ok let me rephrase
> it .
> 
> Assume the values list is the
> content of a histogram. Then we see that
> values = [  0,  72,   2,   4,   9,   2,   0,   0,  42,  26,   0, 282,
> 23,   0, 101, 0,   0,   0,   0,   0]
> 
>  1 is repeated 72 times, 3 -> 4 times and so on. That is the index
> would be the value repeated as many times as in the list.
> Now If we find the max and look for the adjcent index.
> 
> That is if we plot the above list as a histogram. We will have crests
> and troughs ie peaks and dips. if we find two dips then the region
> between the two dips could be a range like [0,  72,   2] .So here we
> are not looking for a zero. But if we find dips then we consider the
> regions between it as a bin and group it.
> 
> |       /\
> |  /\  /  \  /\
> | /  \/    \/  \
> |/_____________________________________
>  |----|-----|---|
>     1    2    3
> 
> so pictorially. In the above plot. If y axis is the list above. then we
> need to bin it this way.
> If I use you previous approach using the groupby then all these three
> regions will be considered as one.
> 
> Hope I am clear this time.

So you want the peaks and valleys basically.  Well, using itools.window 
from http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/299529, you 
could do something like:

py> values = [0,72,2,4,9,2,0,0,42,26,0,282,23,0,101,0,0,0,0,0]
py> peaks = [i
...          for i, (v1, v2, v3) in enumerate(itools.window(values))
...          if v1 < v2 and v2 > v3]
py> peaks
[1, 4, 8, 11, 14]
py> valleys = [i
...            for i, (v1, v2, v3) in enumerate(itools.window(values))
...            if v1 >= v2 and v2 <= v3]
py> valleys
[2, 6, 7, 10, 13, 15, 16, 17, 18]
py> [(min((abs(p - v), v) for v in valleys + [0] if v < p)[1],
...   p,
...   min((abs(p - v), v) for v in valleys if v > p)[1])
...  for p in peaks]
[(0, 1, 2), (2, 4, 6), (7, 8, 10), (10, 11, 13), (13, 14, 15)]

This is not likely the most efficient approach, but it's pretty simple:
  * identify the peaks and valleys
  * identify the valley on each side of a peak

STeVe


From snail at objmedia.demon.co.uk  Tue May 24 11:45:21 2005
From: snail at objmedia.demon.co.uk (Stephen Kellett)
Date: Tue, 24 May 2005 16:45:21 +0100
Subject: Running PythonNN.DLL as debug or release?
References: <yVJg2IJ5bzkCFwFe@objmedia.demon.co.uk>
	<mailman.55.1116946481.18027.python-list@python.org>
Message-ID: <USjZX+JRw0kCFwQi@objmedia.demon.co.uk>

>-O     : optimize generated bytecode (a tad; also PYTHONOPTIMIZE=x)
>-OO    : remove doc-strings in addition to the -O optimizations
>...
>
>if you want to use these from your C code, setting the global Py_OptimizeFlag
>to 1 (-O) or 2 (-OO) should work.

Yes that is what I wanted to do. Thank you very much.

Stephen
-- 
Stephen Kellett
Object Media Limited
Computer Consultancy, Software Development
Windows C++, Java, Assembler, Performance Analysis, Troubleshooting


From miumiun at gmail.com  Wed May 18 10:02:16 2005
From: miumiun at gmail.com (miumiun at gmail.com)
Date: 18 May 2005 07:02:16 -0700
Subject: Plone personalization
Message-ID: <1116424936.623323.75060@f14g2000cwb.googlegroups.com>

I'm conducting some research about CMS systems and I have limited the
choices to several that fit my needs. Many of them have live demos, so
I can try and see, but I didn't find such for Plone. Is there one? I
also didn't see one very important feature - personalization.

I'm not sure if I am using the correct term but I my company we call
personalization the ability of the site to show different content
depending to the user who has logged in or, told in other words -
content element level security. Does Plone support this? I want to be
able to create a menu item that is visible only for specific users (or
roles) and the same for the content elements. Can you think of some
other alias for this feature that is mentioned on
http://www.cmsmatrix.org/matrix?func=viewDetail&wid=2&listingId=1002 so
I can check for other CMSs whether they support it.

Thanks all.

And a final question - does anyone have any idea is the integration of
live video streams in Plone (or maybe another CMS) hard to achieve? Sth
like this http://lieblinx.net.au/Media/Streaming



From martin at v.loewis.de  Tue May 24 15:26:02 2005
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Tue, 24 May 2005 21:26:02 +0200
Subject: reference counting and file objects
In-Reply-To: <1116953438.844243.32800@f14g2000cwb.googlegroups.com>
References: <slrnd8kf7b.40a.jtr@ofb.net><7xoeb94r3j.fsf@ruckus.brouhaha.com>
	<428a40e1$0$29930$9b622d9e@news.freenet.de>
	<1116953438.844243.32800@f14g2000cwb.googlegroups.com>
Message-ID: <42937FCA.6080800@v.loewis.de>

Peter wrote:

> Does the idiom:
> 
> lines = file("myfile","r").readlines()
> 
> have any better guarantee of being closed automatically? 

Yes. The file object only lives on the evaluation stack,
and that is discarded in any case when the function terminates
(whether through a return or through an exception). In
addition, the object is released as soon as readlines
returns.

Regards,
Martin


From edspyhill01 at yahoo.com  Wed May 11 14:15:29 2005
From: edspyhill01 at yahoo.com (edspyhill01 at yahoo.com)
Date: 11 May 2005 11:15:29 -0700
Subject: Jesus said, "I am the way,
	the truth and the life: no one can come to the Father(God)(in Heaven),
	but by me." (John 14:6) This means that if you die without trusting in
	Jesus Christ as your Lord and Saviour you will die in your sins
	and be forever separated from the love of God in a place called
	Hell. The Holy Bible descibes Hell as a place of eternal
	torment, suffering,
	pain and agony for all those who have rejected Jesus Christ. The good
	news is that you can avoid Hell by allowing Jesus Christ to
	save you today. Only then will you have true peace in your life
	knowing that no matter what happens you are on your way to
	Heaven. by BluWater0523@yahoo.com
In-Reply-To: <1115824563.613661.169620@g47g2000cwa.googlegroups.com>
References: <1115824563.613661.169620@g47g2000cwa.googlegroups.com>
Message-ID: <1115835329.460881.79510@g44g2000cwa.googlegroups.com>

jerkoff



From nir at digitalpeers.com  Wed May  4 08:04:07 2005
From: nir at digitalpeers.com (Nir Aides)
Date: Wed, 04 May 2005 15:04:07 +0300
Subject: tkinter and threads
Message-ID: <4278ba5e$1@news.bezeqint.net>

Hello,

In Tkinter, is it safe to call widget.after(time, callback) from another 
thread (other than the gui thread)?

Thanks,
Nir


From skip at pobox.com  Thu May 12 10:45:56 2005
From: skip at pobox.com (Skip Montanaro)
Date: Thu, 12 May 2005 09:45:56 -0500
Subject: urllib download insanity
In-Reply-To: <4282EE0E.1080100@open-networks.net>
References: <4282EE0E.1080100@open-networks.net>
Message-ID: <17027.27684.227400.678122@montanaro.dyndns.org>


    Timothy> i DELETED the file from my webserver, uploaded the new
    Timothy> one. when my app logs in it checks the file, if it's changed it
    Timothy> downloads it. the impossible part, is that on my pc is
    Timothy> downloading the OLD file i've deleted! if i download it via IE,
    Timothy> i get the new file. SO, my only conculsion is that urllib is
    Timothy> caching it some where. BUT i'm already calling urlcleanup(), so
    Timothy> what else can i do?  here is the code

Is there a proxy between you and the web server?

Skip


From gigi-s at bigfoot.com  Sun May 29 18:43:16 2005
From: gigi-s at bigfoot.com (Gigi)
Date: Sun, 29 May 2005 15:43:16 -0700
Subject: __getattribute__ and __getattr__
Message-ID: <d7dgd4$29v$1@sea.gmane.org>

Hi,
In the Python documentation regarding __getattribute__ (more attribute 
access for new style classes) it is mentioned that if __getattribute__ 
is defined __getattr__ will never be called (unless called explicitely). 
Here is the exact citation:

"""
The following methods only apply to new-style classes.

__getattribute__( 	self, name)
     Called unconditionally to implement attribute accesses for 
instances of the class. If the class also defines __getattr__, it will 
never be called (unless called explicitly). This method should return 
the (computed) attribute value or raise an AttributeError exception. In 
order to avoid infinite recursion in this method, its implementation 
should always call the base class method with the same name to access 
any attributes it needs, for example, "object.__getattribute__(self, 
name)".
"""

I discovered that it is not so for Python 2.3.4 on Windows at least. The 
actual behavior is that if both __getattribute__ and __getattr__ methods 
exist then __getattribute__ is called first, but if it raises 
AttributeError then the exception will be swallowed silently and 
__getattr__ will be invoked. Note that if I forward to the default 
object.__getattribute__ or if I raise the AttributeError myself the 
result is the same. My understanding of the documentation is it that the 
program should just exit with the AttributeError exception.

Here is the code:

class A(object):
     def __getattribute__(self, name):
         return object.__getattribute__(self, name)
	# raise AttributeError()

     def __getattr__(self, name):
         return 42

if __name__ == '__main__':
     a = A()
     print a.x

Here is the Output:

42




From ihatespam at hotmail.com  Wed May  4 09:17:13 2005
From: ihatespam at hotmail.com (vkeyboard)
Date: Wed, 04 May 2005 13:17:13 GMT
Subject: How to write this regular expression?
References: <mailman.139.1115189526.6583.python-list@python.org>
Message-ID: <ba48873c21847caa1e6923569962fec9$1@jtp.tzo.com>

Personally I'd use groups.



From fredrik at pythonware.com  Tue May 24 10:49:59 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 24 May 2005 16:49:59 +0200
Subject: Running PythonNN.DLL as debug or release?
References: <yVJg2IJ5bzkCFwFe@objmedia.demon.co.uk>
Message-ID: <d6veri$3fq$1@sea.gmane.org>

Stephen Kellett wrote:

> We've been using Python embedded in an application for a while now,
> where the Python dll is PythonNN.dll, NN being the version number, such
> as Python24.dll.
>
> Recently it was pointed out to me that Python can run in a debug or
> release configuration and that you can specify this on the command line
> using -O and -OO.

whoever pointed that out to you was confused: -O and -OO are optimization
flags used by the Python interpreter, and has nothing to do with what Python
runtime you're using.

$ python -h
usage: python [option] ... [-c cmd | file | -] [arg] ...
Options and arguments (and corresponding environment variables):
...
-O     : optimize generated bytecode (a tad; also PYTHONOPTIMIZE=x)
-OO    : remove doc-strings in addition to the -O optimizations
...

if you want to use these from your C code, setting the global Py_OptimizeFlag
to 1 (-O) or 2 (-OO) should work.

</F> 





From http  Sun May  1 19:52:03 2005
From: http (Paul Rubin)
Date: 01 May 2005 16:52:03 -0700
Subject: How to kill a SocketServer?
References: <7xwtqj1lh1.fsf@ruckus.brouhaha.com>
	<pan.2005.05.01.08.06.34.989917@dalkescientific.com>
Message-ID: <7x1x8qpkrg.fsf@ruckus.brouhaha.com>

Andrew Dalke <dalke at dalkescientific.com> writes:
> which means it went a different route.  Looks like a
> request comes in and is put to a work queue.  Clients get
> from it.  There's a special work queue item to tell
> the threads to stop.

Well, ok, so the worker threads stop.  How do you get the listener
thread to stop, since it's blocked waiting for a new connection to arrive?


From cfbolz at gmx.de  Tue May 24 11:20:20 2005
From: cfbolz at gmx.de (Carl Friedrich Bolz)
Date: Tue, 24 May 2005 17:20:20 +0200
Subject: first release of PyPy
In-Reply-To: <1116880764.260884.286720@g49g2000cwa.googlegroups.com>
References: <mailman.264.1116625088.8733.python-list@python.org>	<1116629407.638782.145950@g47g2000cwa.googlegroups.com>	<mailman.9.1116831944.18027.python-list@python.org>	<d6sn2f$18d$1@news.doit.wisc.edu>	<mailman.29.1116868886.18027.python-list@python.org>
	<1116880764.260884.286720@g49g2000cwa.googlegroups.com>
Message-ID: <42934634.5060105@gmx.de>

Kay Schluehr wrote:
>>Speed isn't even the biggest problem when running PyPy on itself.
>>PyPy still 'fakes' some objects, e.g. borrows them from the underlying
>>Python.
> 
> 
> Does it mean You create an RPython object that runs on top of CPython,
> but is just an RPython facade wrapped around a CPython object?

yes. It means that there are objects that behave like they should in
PyPy but are implemented by keeping creating a regular CPython instance
of the object and delegating all calls on PyPy-level back to the CPython
level.

> So You have four kinds of Pythons:
> 
> RPy  -  translateable into LL code
> APy  -  non-translateable but interpretable by translated RPy
> RPy* -  non-translateable but consistent interface with RPy. Calls
>         APy*
> APy* -  not translateable and not interpreteable by translated RPy
> 
> "Selfhosting" would imply vanishing RPy* and APy*. But the problem
> seems to be that selfhosting must somehow be broken because the system
> needs to interact with OS-dependend librarys. As long as You run the
> system upon CPython the problem does not occur but once You drop it, a
> kind of "extension objectspace" must be created which is translated
> into code with nice interfacing properties. Or do You think that
> RPython translations will be sufficient and another ext-objectspace is
> just useless epi-cycling?

Not exactly sure what you mean here. It's clear that we have to handle
faked objects differently to get a stand-alone PyPy version. One
possibility would be, that the RPython code calls certain functions
which are implemented in Python (can be regular Python), that are not
translated but replaced by a proper C function. For example we have a
function intmask at the moment which takes a long and removes as many
bits from it as neccessary to make it fit into an int again. This
function is left out when translating, since in C an int can obviously
not overflow to a long.

Regards,

Carl Friedrich


From simon.dahlbacka at gmail.com  Tue May 24 01:37:09 2005
From: simon.dahlbacka at gmail.com (simon.dahlbacka at gmail.com)
Date: 23 May 2005 22:37:09 -0700
Subject: Python & DOM
In-Reply-To: <pan.2005.05.23.22.13.58.420581@there.net>
References: <pan.2005.05.23.22.13.58.420581@there.net>
Message-ID: <1116913028.977768.110280@o13g2000cwo.googlegroups.com>

textNode = yourDocumentElement.createTextNode("the content")
yourElement.appendChild(textNode)

/S



From tkpmep at hotmail.com  Wed May 25 13:14:14 2005
From: tkpmep at hotmail.com (tkpmep at hotmail.com)
Date: 25 May 2005 10:14:14 -0700
Subject: Using properties
References: <1117029966.799908.183830@f14g2000cwb.googlegroups.com>
	<42949ca2$0$6501$636a15ce@news.free.fr>
Message-ID: <1117041254.820429.306500@g49g2000cwa.googlegroups.com>

Thanks for the help. I now understand it better. As Bruno points out, I
really don't need a property in this case, as my attribute is public,
and I will remove it.

Thomas Philips



From alex at quad.com.ar  Tue May 17 11:27:20 2005
From: alex at quad.com.ar (Alex Verstraeten)
Date: Tue, 17 May 2005 12:27:20 -0300
Subject: Design Question.  Data Acquisition/Display related.
In-Reply-To: <4289FF9C.3060106@teledisnet.be>
References: <4289eae4$0$344$4d4efb8e@read.news.be.uu.net>
	<4289FC69.2020509@quad.com.ar> <4289FF9C.3060106@teledisnet.be>
Message-ID: <428A0D58.8030700@quad.com.ar>

StepH wrote:

>>a simple loop could do it
>> - handle user events
>> - collect data
>> - update displays
>> - sleep
>>    
>>
>Here i've a prob. (due to the fact that I start both with Python & 
>TkInter).  In TkInter, you run your app by launching a mainloop() 
>routine, right ?  So, how, in my forever loop (handle user events / 
>Collect data / Update Display / Sleep) handle the user data ?
>
>Sure, i can (i suppose), log user activity (via the event send by the Tk 
>underlayer), the "poll" theses event in my for ever loop ?  But in this 
>case, are these event will be correctly generated (by Tk) ?  How to 
>"give the hand" to Tk in such scenario ?
>
>Thanks for your help.
>
>StepH.
>  
>
oops, sorry, I was thinking of a 'pygame' kind of loop, where you have 
control over it.
I dont have experience on Tk, I allways use wxPython or pygame for gui's.

you can forget about the loop I mentioned... it doesn't apply to 
event-driven applications where you have no control over the loop.
you'd be using a timer that triggers a tick method at a certain 
interval, in that tick method you could tell your data collectors to 
collect data... then the data collectors would trigger all its 
subscribed displays's "update" function, so they draw the new available 
data, just like the "for display in self.subscribed_displays: 
display.update(data)".

so it comes to something like this:

tk mainloop is set to call tick() every 100ms through a timer.
tick() will iterate through all data collectors and call their "collect" 
method
each data collector will then collect data  and iterate through all 
asociated displays calling their respective 'update' method on each.

of course there are plenty of ways to design an app, this is just an idea.

hope it helps,
Alex













From ville at spammers.com  Fri May 27 01:53:30 2005
From: ville at spammers.com (Ville Vainio)
Date: 27 May 2005 08:53:30 +0300
Subject: Just remember that Python is sexy
References: <1116899839.323185.58350@g49g2000cwa.googlegroups.com>
	<O9v*jQrPq@news.chiark.greenend.org.uk>
	<v8adndXwp-hF4gnfRVn-ig@powergate.ca>
	<du7is16wiug.fsf@mozart.cc.tut.fi>
	<Xns96625FD0B248duncanbooth@127.0.0.1>
	<3fnlhlF8caf9U1@individual.net>
Message-ID: <du74qcpcizp.fsf@amadeus.cc.tut.fi>

>>>>> "Greg" == Greg Ewing <greg at cosc.canterbury.ac.nz> writes:

    >> The name index implies it returns something you can use as an index
    >> to get at the substring.

    Greg> But that's no fun -- it doesn't involve sex!

    Greg> How about this: "index" and "sex" both end with "ex", which
    Greg> is short for "exception".

Or something about the use of index finger being an exception from the
conventional strategy...

-- 
Ville Vainio   http://tinyurl.com/2prnb


From http  Mon May  9 18:59:44 2005
From: http (Paul Rubin)
Date: 09 May 2005 15:59:44 -0700
Subject: Encryption with Python?
References: <1115324411.952821.150780@o13g2000cwo.googlegroups.com>
	<001301c552db$dd19d3e0$0201a8c0@mcuf7> <d5i0as$ejd$1@sea.gmane.org>
	<009901c552fb$220132e0$0201a8c0@mcuf7> <d5ier2$hqa$1@sea.gmane.org>
	<mailman.213.1115652248.29826.python-list@python.org>
	<7x8y2oyyhf.fsf@ruckus.brouhaha.com>
	<mailman.234.1115676887.29826.python-list@python.org>
Message-ID: <7xvf5sqa3j.fsf@ruckus.brouhaha.com>

"Anthra Norell" <anthra.norell at tiscalinet.ch> writes:
> I don't follow. There is no bitwise correlation between a plain-text
> character and its encoded equivalent. What's more, there is no detectable
> correlation at all. 

Your question was how could you tell if two ciphertexts were encrypted
with the same key.  Answer: suppose both plaintext are ascii strings.
Then both plaintexts have 0 as the top bit of every byte.  So do this:

   x = ciphertext1 xor ciphertext2

If ciphertext1 and ciphertext2 were encrypted with two different keys,
the top bit of x's bytes will be random-looking.  If ciphertext1 and
ciphertext2 were encrypted with the same key, the top bit of each of
x's bytes will be 0.  So just check whether the top bit of x is always
0.  If it is, then ciphertexts 1 and 2 were probably encrypted with
the same key.

> Password management is certainly a problem, but of course is totally
> unrelated to the quality of an encryption method.

You're ignoring your own question.  With a good encryption scheme,
finding out an old password doesn't tell you anything about new
messages.  With your encryption scheme, finding out an old password
leaks information about the new one.

> I agree. Depending on a situation, a solution might or might not be
> adequate.

Since good encryption schemes that don't have significant performance
penalties are widely available, why mess with a crap scheme EVER?  Why
use a solution that "might or might not be adequate" when you can use
one that's definitely ok?

> No, in fact I don't. I am quite confident that the library module 'random'
> produces random distributions.

The author of the algorithm doesn't agree with you.  The documentation
is very explicit, it's no good for cryptography, and if you study how
it works you can see that it's easily distinguishable from random.

> I don't think it would be difficult for a mathematician to prove or
> disprove the hypothesis.

It's true of a genuine random keystream, but that's not what we're
talking about.  We're talking about the output of python's random
module, which is not of cryptographic quality.  It's fine for
statistical simulations in that it doesn't have correlations that are
likely to accidentally cause trouble.  It's no good for defeating
adversaries who are looking for correlations on purpose.  Lots of
people don't understand the difference.  Please see the book "Security
Engineering" by Ross Anderson to get an idea of what you're up against.

> > Generating keystreams that are indistinguishable from random is an
> > extremely tricky subject, there are books and papers written about
> > it, etc.
> 
> I agree. I wouldn't know how to design a random generator. Fortunately I
> don't need to. I can use ready made ones.

There are good ready ones available, but the one you're proposing to
use is not one of them and was not designed to be.

> Try out the following function. You need the Image package.

That doesn't prove a thing.


From fredrik at pythonware.com  Sun May 15 01:52:42 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Sun, 15 May 2005 07:52:42 +0200
Subject: Modifying a built-in function for logging purposes
References: <1116098593.970438.219860@g47g2000cwa.googlegroups.com>
Message-ID: <d66o2u$2o3$1@sea.gmane.org>

qwweeeit at yahoo.it wrote:

> I wonder if it is possible to change (temporarily) a built-in function
> for logging purposes.
> Let me explain:
> I want to log all the 'open' operations, recording the file to be
> opened, the "mode" (r/w/a...) and (possibly) the module which made the
> call.

import sys
import __builtin__ # note: no plural s

old_open = __builtin__.open

def myopen(*args):
    code = sys._getframe(1).f_code
    print "OPEN", args, "FROM", code.co_name, "IN", code.co_filename
    return old_open(*args)

__builtin__.open = myopen

this only handles file opens that goes via the "open" function, of course.
to handle all opens, including internal operations (e.g. imports), you're
probably better off using an external tool (e.g. strace, filemon, or some-
thing similar).

</F>





From timothy at open-networks.net  Sun May  8 22:07:59 2005
From: timothy at open-networks.net (Timothy Smith)
Date: Mon, 09 May 2005 12:07:59 +1000
Subject: computer unable to load _pysvn.pyc
In-Reply-To: <427EC230.1060300@open-networks.net>
References: <427EC230.1060300@open-networks.net>
Message-ID: <427EC5FF.6090609@open-networks.net>

Timothy Smith wrote:

>this is truely maddening
>
>Traceback (most recent call last):
>  File "PubWare.py", line 11, in ?
>  File "Main.pyc", line 46, in ?
>  File "pysvn\__init__.pyc", line 12, in ?
>  File "pysvn\_pysvn.pyc", line 9, in ?
>  File "pysvn\_pysvn.pyc", line 7, in __load
>ImportError: DLL load failed: A device attached to the system is not 
>functioning.
>
>any ideas? it works perfectly on another computer
>  
>
ok more information - windows 98 computers have this issue, xp computers
are fine.
how do i work around this? obviously one of the pysvn dll's won't load
on win98.
note this is  py2exe package made on a windows xp system



From lee_cullens at mac.com  Sun May 15 20:37:42 2005
From: lee_cullens at mac.com (Lee Cullens)
Date: Sun, 15 May 2005 20:37:42 -0400
Subject: An example in point 2
Message-ID: <888ECD77-032C-4B6E-A679-4FDC66FC27B2@mac.com>

     From:       lee_cullens at mac.com
     Subject:     RE:  An example in point 2
     Date:     May 15, 2005 8:35:01 PM EDT
     To:       postmaster at python.org

I guess Python is just a cover for this list.  Since the holly  
rollers can post whatever they want, now the survivalists are chiming  
in also.  Yet Python content with some harmless vernacular gets  
kicked.   No point in feeding the idiots that post this garbage so  
maybe we (as in interested in Python) should start sending it all to  
you.

======================================================================== 
================================
From: TheConcernedOne at elsewhere.com
Date: May 15, 2005 7:33:38 PM EDT
To: python-list at python.org
Subject: The world is really unstable these days......


We've got a lot to deal with these days. Terrorism, Recession, <blah,  
blah, blah>


======================================================================== 
================================


An example in point.  You let the holly rollers clutter up the list,  
but this little test message gets blocked.  Very inconsiderate and  
inconsistent of you.  If you can block this then you can block all  
the holly roller garbage.

======================================================================== 
================================
     From:       lee_cullens at mac.com
     Subject:     Re: Jesus said, "..."
     Date:     May 15, 2005 1:52:43 PM EDT
     To:       python-list at python.org

The annoying thing about this junk mail is if one receives just a  
digest (otherwise the junk mail filter cans it).  Funny how one  
perfectly innocent word can hold up a post for review, but this sort  
of thing gets through every time????

Lee C



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From onurb at xiludom.gro  Tue May 10 07:58:49 2005
From: onurb at xiludom.gro (bruno modulix)
Date: Tue, 10 May 2005 13:58:49 +0200
Subject: Coding comments/suggestions - first python script - sshd/ftpd
	blocking
In-Reply-To: <1115559867.855685.104520@g14g2000cwa.googlegroups.com>
References: <1115559867.855685.104520@g14g2000cwa.googlegroups.com>
Message-ID: <4280a1fa$0$316$636a15ce@news.free.fr>

avinashc at yahoo.com wrote:
> If anyone is interested in a /etc/hosts.deny automatic update script
> (Unix only) based on sshd/vsftpd attacks, here's a python script:
> http://www.aczoom.com/tools/blockhosts/
> 
> This is a beta release, and my first attempt at Python coding.
> Any comments, suggestions, pointers on using more common Python idioms
> or example coding snippets, etc, welcome!

First thing: I had *many* indentation errors (emacs + python_mode on a 
linux-box). *Please* take care of this.

I just gave a quick glance, not even pretending to really understand 
what the code do, so what follow are just some general advices:

***
def die(msg, ex=None):
     print msg
     if ex: print ex
     sys.exit(1)

- errors messages (including usage) should be written to stderr (stdout 
is for normal output)
- you may want to use positional arguments (*args) instead of 'ex'

def die(msg, *args):
     print >> sys.stderr, msg
     for ex in args:
        print >> sys.stderr, ex
     sys.exit(1)

***
class LockFile:
     (...)
     def lock(self):
         try:
	    try:
		self.fp = open(self.path, "r+")
                 # r+ prevents trashing the file!
	    except Exception, e :

You should use IOError instead of Exception here.
*Always* use the most specific exception class possible.

		if e.errno == errno.ENOENT: # no such file

Here if you have anything else than an IOError (well, anything that 
doesn't have a 'errno' attribute), you'll get an AttributeError...
(...)

		    if DEBUG: print " ... first r+ lock file open failed, so opened 
with w+ mode"

You may want to define a 'debug_trace' function (or use an existing 
trace/log lib) that encapsulate the test...

***
class BlockHosts:
     (...)
     def load_hosts_deny(self, logoffsets):
         self.__remaining_lines = []

	if self.__verbose: print " ... hosts.deny: loading from ", self.__denyfile

Same as for DEBUG : you may want to encapsulate the test in a method.

HTH
Bruno
-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for 
p in 'onurb at xiludom.gro'.split('@')])"


From __peter__ at web.de  Thu May 12 04:44:12 2005
From: __peter__ at web.de (Peter Otten)
Date: Thu, 12 May 2005 10:44:12 +0200
Subject: tkinter puzzler
References: <7xzmv0hq2h.fsf_-_@ruckus.brouhaha.com>
Message-ID: <d5v4vc$js7$05$1@news.t-online.com>

Paul Rubin wrote:

I think you are missing the columnconfigure()/rowconfigure() methods as
Martin Franklin pointed out. Anyway, here is some code to illustrate the
matter. I've found it helpful to use "false" colors to see what's going on.
the yellow 'main' frame contains the red 'north' and the blue 'south'
frame.

import Tkinter as tk

root = tk.Tk()
main = tk.Frame(root, bg="yellow")
main.pack(expand=True, fill="both")
main.columnconfigure(0, weight=1)
main.rowconfigure(0, weight=1)

north = tk.Frame(main, bg="red")
north.columnconfigure(1, weight=1)
for row, text in enumerate("alpha beta gamma delta".split()):
    label = tk.Label(north, text=text)
    label.grid(row=row, column=0, sticky="NW")
    entry = tk.Entry(north)
    entry.grid(row=row, column=1, sticky="NEW")
    button = tk.Button(north, text=text.upper())
    button.grid(row=row, column=2, sticky="NW")
    north.rowconfigure(row, weight=1)
north.grid(column=0, row=0, sticky="NEW")

south = tk.Frame(main, bg="blue")
stop = tk.Button(south, text="Stop")
go = tk.Button(south, text="Go")
stop.grid(column=0, row=0)
go.grid(column=2, row=0)
# the empty column takes all the extra space
south.columnconfigure(1, weight=1) 
south.grid(column=0, row=1, sticky="NSEW")

root.mainloop()

Peter



From deejaay at swbell.net  Mon May  2 09:47:13 2005
From: deejaay at swbell.net (deejaay at swbell.net)
Date: Mon, 02 May 2005 13:47:13 -0000
Subject: Can't get compression in Python zip script.
Message-ID: <d55b11+flng@eGroups.com>

Hello,
I following an example on how to zip files from the www.devshed.com 
site.
I can create a zip package, however I am not getting any compression.
120M file stays 120M within the zip package.
I need to know how to set or activate the compression values.
here is the code I'm using:

>import zipfile
>zip = zipfile.ZipFile('<path/zipfilename.zip>', 'w')
>zip.write('<path/filename.txt>')
>zip.close()

Any help would be gratly appreciated

deej





From jello at comics.com  Tue May 10 19:07:18 2005
From: jello at comics.com (rzed)
Date: Tue, 10 May 2005 19:07:18 -0400
Subject: Setting the corner color in rotated PIL images
References: <Xns96494A613BC4Fjreeder@63.223.7.253>
	<mailman.97.1115384328.29826.python-list@python.org>
Message-ID: <Xns9652C2AC56028jreeder@63.223.7.253>

"Fredrik Lundh" <fredrik at pythonware.com> wrote in
news:mailman.97.1115384328.29826.python-list at python.org: 

> "rzed" wrote:
> 
>> I'm using PIL to generate some images which may be rotated at
>> the user's option. When they are rotated, the original image is
>> cropped in the new image (which is fine), and the corners are
>> black (which is not, in this case). I can't find any documented
>> way to change the default fill color (if that's what it is) for
>> the corners, and PIL also doesn't seem to support a flood fill.
>> I have created a flood fill in Python, which works but which
>> markedly slows image generation.
>>
>> Can anyone suggest a better way to set the color of the
>> corners? 
> 
> if you're doing this on RGB images, the quickest way to do this
> is: 
> 
>     def rotate(image, angle, color):
>         bg = Image.new("RGB", image.size, color)
>         im = image.convert("RGBA").rotate(angle)
>         bg.paste(im, im)
>         return bg
> 
> here's a more general solution:
> 
>     def rotate(image, angle, color, filter=Image.NEAREST):
>         if image.mode == "P" or filter == Image.NEAREST:
>             matte = Image.new("1", image.size, 1) # mask
>         else:
>             matte = Image.new("L", image.size, 255) # true matte
>         bg = Image.new(image.mode, image.size, color)
>         bg.paste(
>             image.rotate(angle, filter),
>             matte.rotate(angle, filter)
>             )
>         return bg
> 
> </F> 
> 
Fredrik:

Thank you for the reply. It just showed up on my server, and, of 
course, it works perfectly.

-- 
rzed


From mrmaple at gmail.com  Thu May 12 05:51:42 2005
From: mrmaple at gmail.com (James Carroll)
Date: Thu, 12 May 2005 05:51:42 -0400
Subject: HELP Printing with wxPython
In-Reply-To: <d5u5kt$pkq$1@carabinieri.cs.interbusiness.it>
References: <d5t4oj$sct$1@carabinieri.cs.interbusiness.it>
	<mailman.357.1115820240.29826.python-list@python.org>
	<d5u5kt$pkq$1@carabinieri.cs.interbusiness.it>
Message-ID: <b273c74105051202511c8d369@mail.gmail.com>

There's a working version in the wxPython Demo... 

If you run the wxpython demo, and choose Print Framework under
Miscellaneous it has code that looks a whole lot like what's on the
wiki, only you can test it and try it out and see if it's broken for
you there.  If anything doesn't work, let the wxPython mailing list
people know about it, and they'll have a work-around or a fix (or show
you what you should be doing) in no time.

-Jim


On 5/11/05, Mario <mario at nospam.noext> wrote:
> 
> "James Carroll" <mrmaple at gmail.com> wrote:
> >I especially like the HtmlEasyPrinting write-up here:
> >   http://wiki.wxpython.org/index.cgi/Printing
> 
> Thank you for your suggestion but I'm just not able to make it work, as i
> said on the original post, I do exactly what is wrote there, but it gives
> errors, I think the script is not updated and not working fine with the
> latest versions of python or wxpython.
> 
> Mario
> 
> --
> http://mail.python.org/mailman/listinfo/python-list
> 
>


From sxanth at ceid.upatras.gr  Fri May 13 06:06:32 2005
From: sxanth at ceid.upatras.gr (Stelios Xanthakis)
Date: Fri, 13 May 2005 13:06:32 +0300
Subject: pyvm -- faster python
In-Reply-To: <d61sha$7qe$05$1@news.t-online.com>
References: <mailman.164.1115548611.29826.python-list@python.org>	<1115561483.741761.212140@f14g2000cwb.googlegroups.com>	<m102l2-9qr.ln1@home.rogerbinns.com>	<mailman.264.1115716603.29826.python-list@python.org>	<vu38l2-k5v.ln1@home.rogerbinns.com>	<7xvf5qbir1.fsf@ruckus.brouhaha.com>	<nt98l2-1e.ln1@home.rogerbinns.com>	<7xpsvymlse.fsf@ruckus.brouhaha.com>	<1115791624.856252.247890@z14g2000cwz.googlegroups.com>	<7x1x8el18e.fsf@ruckus.brouhaha.com>	<1115876410.813839.222080@g43g2000cwa.googlegroups.com>
	<mailman.441.1115886157.29826.python-list@python.org>
	<d61sha$7qe$05$1@news.t-online.com>
Message-ID: <42847C28.9040207@ceid.upatras.gr>

Armin Steinhoff wrote:
>>
>> pyvm has that. A big part of it is written in "lightweight C++" [1].
> 
> 
> Realy ?  I have downloaded the lwc distribution and checked it out.
> It was a surprise that none of the examples are working.
> I'm using SuSE 9.0 with  gcc 3.3.1 ...
> 

:(

> Is there a working version of lwc ???
> 

pyvm is written in lwc-2.0 which is not yet released because
nobody's using it.


Stelios


From cam.ac.uk at mh391.invalid  Mon May  2 14:59:53 2005
From: cam.ac.uk at mh391.invalid (Michael Hoffman)
Date: Mon, 02 May 2005 19:59:53 +0100
Subject: How to tell if invoked through IDLE or command line?
In-Reply-To: <117cshk6l796o75@corp.supernews.com>
References: <117cshk6l796o75@corp.supernews.com>
Message-ID: <d55tbe$r9o$1@gemini.csx.cam.ac.uk>

Robert D. Young wrote:
> I've probably asked this before, but how can I tell within the program I'm
> running if the .py files was involved by "run module" in IDLE or by using
> the .py assoication with the python.exe program? I'd like to prevent running
> under certain circumstances, or pop-up warnings, or change character
> displays (some look different when run under IDLE).

sys.modules.keys() contains "idlelib" is a simple way of doing it, 
assuming you never import idlelib otherwise (and why would you?)
-- 
Michael Hoffman


From Michael.J.Fromberger at Clothing.Dartmouth.EDU  Mon May  9 20:07:27 2005
From: Michael.J.Fromberger at Clothing.Dartmouth.EDU (Michael J. Fromberger)
Date: Mon, 09 May 2005 20:07:27 -0400
Subject: Unique Elements in a List
References: <1115676903.432187.294910@z14g2000cwz.googlegroups.com>
Message-ID: <Michael.J.Fromberger-1445B3.20072709052005@localhost>

In article <1115676903.432187.294910 at z14g2000cwz.googlegroups.com>,
 "superprad at gmail.com" <superprad at gmail.com> wrote:

> Is there an easy way to grab the Unique elements from a list?
> For Example:
> data = [0.1,0.5,0.6,0.4,0.1,0.5,0.6,0.9]
> 
> what I am looking for is the unique elements 0.4 and 0.9 with their
> index from the list.
> Probably something like a Hash Table approach!!
> I would like to get this done without unnecessary overhead.And the list
> could be essentially anything strings,floats,int etc...
> 
> Or is it already avaliable as an attr to a list or an array?
> I dont remember seeing anything like that.
> 

>From your comments downthread, it seems you want to find those elements 
of the input sequence which occur exactly once, and return not only 
these elements, but also their positions.

One reasonable solution might be as follows:

  def unique_elts(seq):
    elts = {}
    for pos, elt in enumerate(seq):
      elts.setdefault(elt, []).append(pos)

    return [ (x, p[0]) for (x, p) in elts.iteritems()
             if len(p) == 1 ]

This returns a list of tuples of the form (x, pos), where x is an 
element of seq that occurs exactly once, and pos is its index in the 
original sequence.  This implementation traverses the input sequence 
exactly once, and requires storage proportional to the length of the 
input.

-M

-- 
Michael J. Fromberger             | Lecturer, Dept. of Computer Science
http://www.dartmouth.edu/~sting/  | Dartmouth College, Hanover, NH, USA


From kay.schluehr at gmx.net  Sat May 28 13:23:03 2005
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: 28 May 2005 10:23:03 -0700
Subject: first release of PyPy
In-Reply-To: <1117116529.063166.286590@g43g2000cwa.googlegroups.com>
References: <mailman.264.1116625088.8733.python-list@python.org>
	<1116629407.638782.145950@g47g2000cwa.googlegroups.com>
	<mailman.9.1116831944.18027.python-list@python.org>
	<d6sn2f$18d$1@news.doit.wisc.edu>
	<mailman.29.1116868886.18027.python-list@python.org>
	<1116880764.260884.286720@g49g2000cwa.googlegroups.com>
	<42934634.5060105@gmx.de>
	<b322b4e605052411071a5c2606@mail.gmail.com>
	<mailman.68.1116961629.18027.python-list@python.org>
	<1117116529.063166.286590@g43g2000cwa.googlegroups.com>
Message-ID: <1117300983.547630.252310@g44g2000cwa.googlegroups.com>

Anton Vredegoor wrote:

> I'm not involved in PyPy myself but this would seem a logical
> possibility. To go a step further, if the compiler somehow would know
> about the shortest machine code sequence which would produce the
> desired effect then there would be no reason to limit onself to only
> those relatively inefficent standard code sequences that are inside
> system dll's.

Are You shure that this problem is effectively solvable in any
language? Since You did not precise Your idea I'm not shure whether You
want to solve the halting-problem in PyPy or not ;)

Kay



From Sebastien.Boisgerault at gmail.com  Wed May 11 15:31:35 2005
From: Sebastien.Boisgerault at gmail.com (=?iso-8859-1?q?S=E9bastien_Boisg=E9rault?=)
Date: 11 May 2005 12:31:35 -0700
Subject: Python Documentation (should be better?)
In-Reply-To: <mailman.389.1115837608.29826.python-list@python.org>
References: <mailman.389.1115837608.29826.python-list@python.org>
Message-ID: <1115839895.739395.174140@g49g2000cwa.googlegroups.com>

Christopher J. Bottaro wrote:
> [...]
> Funny, the con of Python (documentation) is PHP's strong point.
> The PHP manual is extremely easy to navigate and its search feature
> works great. Contrast that with Python, where you have to use "the
> tutorial" as the manual.  Also, the tutorial is just that...a
tutorial,
> its a NOT a manual.

The tutorial is great IMHO and yes, it is definitely not a
reference guide. But what's wrong with the online library
reference or its pdf equivalent ? And why don't you use the
python.org "search" (top right of the screen) ?

> Now for the real kicker.  Some of the module documentation doesn't
> even list simple use cases or even the entire API.

Sometimes the 'missing' interface is (superficially) hidden
on purpose. Example in doctest about the DocTestCase class
(quoted from the library ref) :

"""
Under the covers, DocTestSuite() creates a unittest.TestSuite out of
doctest.DocTestCase instances, and DocTestCase is a subclass of
unittest.TestCase. DocTestCase isn't documented here (it's an internal
detail), but studying its code can answer questions about the exact
details of unittest integration.
"""

Could you be more specific about the modules/packages
that lack proper examples/documentation ?

> When my coworker came to me with
> this complaint, my response was "oh, just load the interpreter,
> import the module and call dir() on it.  Then instantiate some
objects
> and call dir() on them also".  My infatuation with Python had kept me

> from realizing the sheer ridiculousness of that method to learn to
> use an API.  Needless to say, my coworker's reaction to that
statement
> snapped me out of it.  But its the truth.  How many of you learn a
> module by starting the interpreter
> and "playing" around with it and using dir()?

You may also use "help" instead of "dir", or directly
pydoc in a shell:

python>>> help("math")
python>>> help(math) # if 'math' has already been imported
bash$ pydoc math

This kind of documentation system suits me (it is far better
than a raw dir anyway). It supports a 'dotted reference'
description of the path to the objects (ie
package.subpackage.module.holder.object) that is IMHO very
convenient.

Cheers,

SB



From python-url at phaseit.net  Tue May 24 12:08:02 2005
From: python-url at phaseit.net (Simon Brunning)
Date: Tue, 24 May 2005 16:08:02 GMT
Subject: Dr. Dobb's Python-URL! - weekly Python news and links (May 24)
Message-ID: <d6vgpr$jlb$1@lairds.us>

QOTW: "If you're sick of answering newbie questions, and don't think you
can do so politely, for the sake of the community, DON'T!  You're not that
necessary." - Joal Heagney

"Who controls the runtime also controls the language." - Kay Schluehr

    
    Jake tells us about the \r control character, which allows one to
    refresh a terminal line. Many people help him to use it from Python,
    and Fredrik warns him that it might well not work from an IDE:
        http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/50cffbb6eb03cc4
        
    John Reese asks whether he needs to explicitly close file objects,
    or whether reference counting will take care of it for him. Martin
    v. L?wis shows a scenario that demonstrates that ref counting won't
    always close files when you think it will:
        http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/7eba2d6efd271707
        
    Simon Percivall and Jp Calderone show Michael Chermside how to
    process subprocess module output a line at a time:
        http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/df6854ec10c6d508
        
    WSGI Explorations with Python - Mike Orr investigates WSGI and Paste:
        http://rex.kicks-ass.net/python/wsgi-explorations.html
        
    Len, an "old time Cobol programmer", asks for some advice on storing data:
        http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/c20623a77b22c456
        
    Dustin is refactoring some unpythonic code that uses a very nasty
    import mechanism, but now he's having trouble with circular imports:
        http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/8eae5075b9973a2b
        
    A Matter Of Questions - Ben Last tells us how he's using Python for
    data cleansing, amongst other things, while building a Playstation
    Music Quiz:
        http://www.livejournal.com/users/benlast/24719.html
        
    William Park wants to test how similar two strings are. This is
    more complicated than it sounds...
        http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/4aa08f075d05eb48

    Create an ODBC data source in the fly with Python:
        http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/414879
        
    Paul Rubin investigates how the super() function works with
    multiple inheritance. A number of people clear things up for him.
        http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/57cdcc73f8747091
        
    Notable releases:
        pysqlite 2.0.2
            http://pysqlite.org/
        PyPy 0.6 (!)
            http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/8e4a74dfb90c8bf4
        

========================================================================
Everything Python-related you want is probably one or two clicks away in
these pages:

    Python.org's Python Language Website is the traditional
    center of Pythonia
        http://www.python.org
    Notice especially the master FAQ
        http://www.python.org/doc/FAQ.html

    PythonWare complements the digest you're reading with the
    marvelous daily python url
         http://www.pythonware.com/daily  
    Mygale is a news-gathering webcrawler that specializes in (new)
    World-Wide Web articles related to Python.
         http://www.awaretek.com/nowak/mygale.html 
    While cosmetically similar, Mygale and the Daily Python-URL
    are utterly different in their technologies and generally in
    their results.

    For far, FAR more Python reading than any one mind should
    absorb, much of it quite interesting, several pages index
    much of the universe of Pybloggers.
	http://lowlife.jp/cgi-bin/moin.cgi/PythonProgrammersWeblog
        http://www.planetpython.org/
        http://mechanicalcat.net/pyblagg.html

    comp.lang.python.announce announces new Python software.  Be
    sure to scan this newsgroup weekly.
        http://groups.google.com/groups?oi=djq&as_ugroup=comp.lang.python.announce

    Steve Bethard, Tim Lesher, and Tony Meyer continue the marvelous
    tradition early borne by Andrew Kuchling, Michael Hudson and Brett
    Cannon of intelligently summarizing action on the python-dev mailing
    list once every other week.
	http://www.python.org/dev/summary/

    The Python Package Index catalogues packages.
        http://www.python.org/pypi/

    The somewhat older Vaults of Parnassus ambitiously collects references
    to all sorts of Python resources.
        http://www.vex.net/~x/parnassus/   

    Much of Python's real work takes place on Special-Interest Group
    mailing lists
        http://www.python.org/sigs/

    The Python Business Forum "further[s] the interests of companies
    that base their business on ... Python."
	http://www.python-in-business.org

    Python Success Stories--from air-traffic control to on-line
    match-making--can inspire you or decision-makers to whom you're
    subject with a vision of what the language makes practical.
        http://www.pythonology.com/success

    The Python Software Foundation (PSF) has replaced the Python
    Consortium as an independent nexus of activity.  It has official
    responsibility for Python's development and maintenance. 
        http://www.python.org/psf/
    Among the ways you can support PSF is with a donation.
        http://www.python.org/psf/donate.html

    Kurt B. Kaiser publishes a weekly report on faults and patches.
        http://www.google.com/groups?as_usubject=weekly%20python%20patch
       
    Cetus collects Python hyperlinks.
        http://www.cetus-links.org/oo_python.html

    Python FAQTS
        http://python.faqts.com/

    The Cookbook is a collaborative effort to capture useful and
    interesting recipes.
	http://aspn.activestate.com/ASPN/Cookbook/Python

    Among several Python-oriented RSS/RDF feeds available are
	http://www.python.org/channews.rdf
	http://bootleg-rss.g-blog.net/pythonware_com_daily.pcgi
	http://python.de/backend.php
    For more, see
	http://www.syndic8.com/feedlist.php?ShowMatch=python&ShowStatus=all
    The old Python "To-Do List" now lives principally in a
    SourceForge reincarnation.
        http://sourceforge.net/tracker/?atid=355470&group_id=5470&func=browse
        http://python.sourceforge.net/peps/pep-0042.html
     
    The online Python Journal is posted at pythonjournal.cognizor.com.
    editor at pythonjournal.com and editor at pythonjournal.cognizor.com
    welcome submission of material that helps people's understanding
    of Python use, and offer Web presentation of your work.

    del.icio.us presents an intriguing approach to reference commentary.
    It already aggregates quite a bit of Python intelligence.
        http://del.icio.us/tag/python

    *Py: the Journal of the Python Language*
        http://www.pyzine.com

    Archive probing tricks of the trade:
        http://groups.google.com/groups?oi=djq&as_ugroup=comp.lang.python&num=100
        http://groups.google.com/groups?meta=site%3Dgroups%26group%3Dcomp.lang.python.*

Previous - (U)se the (R)esource, (L)uke! - messages are listed here:
  http://www.ddj.com/topics/pythonurl/ (requires subscription)
  http://groups-beta.google.com/groups?q=python-url+group:comp.lang.python*&start=0&scoring=d&
  http://purl.org/thecliff/python/url.html (dormant)
or
  http://groups.google.com/groups?oi=djq&as_q=+Python-URL!&as_ugroup=comp.lang.python


Suggestions/corrections for next week's posting are always welcome.
E-mail to <Python-URL at phaseit.net> should get through.

To receive a new issue of this posting in e-mail each Monday morning
(approximately), ask <claird at phaseit.net> to subscribe.  Mention
"Python-URL!".


-- The Python-URL! Team--

Dr. Dobb's Journal (http://www.ddj.com) is pleased to participate in and
sponsor the "Python-URL!" project.




From news at NOwillmcguganSPAM.com  Thu May 26 17:35:20 2005
From: news at NOwillmcguganSPAM.com (Will McGugan)
Date: Thu, 26 May 2005 22:35:20 +0100
Subject: overflowerror!!
In-Reply-To: <1117143082.825320.131260@g44g2000cwa.googlegroups.com>
References: <1117143082.825320.131260@g44g2000cwa.googlegroups.com>
Message-ID: <4296411a$0$24052$db0fefd9@news.zen.co.uk>

ashtonn at gmail.com wrote:
> Hello,
> I am trying to fill in a dword value into an array and i get an
> overflowerror
> 
> Here's what iam trying to do.
> 
> from array import *
> data = array('B', '\0' * 256)
> 
> val = 0xFFFFFFFF
> 
> for i in range(256):
>     data[i] = val
> 
> print data
> 
> How do i fill in the val 256 times into the array?

'B' creates bytes, and a byte can only store numbers in the range 0 to 
255. Try using 'L' when creating your array.

Will McGugan
-- 
http://www.willmcgugan.com
"".join( [ {'*':'@','^':'.'}.get(c,None) or chr(97+(ord(c)-84)%26) for c 
in "jvyy*jvyyzpthtna^pbz" ] )


From mrmaple at gmail.com  Thu May 12 09:09:26 2005
From: mrmaple at gmail.com (James Carroll)
Date: Thu, 12 May 2005 09:09:26 -0400
Subject: Python Documentation (vs PHP stuff)
In-Reply-To: <d5vapu$ahi$1@sea.gmane.org>
References: <d5tjng$kae$1@sea.gmane.org>
	<mailman.390.1115838298.29826.python-list@python.org>
	<d5to4d$895$1@solaris.cc.vt.edu> <d5tqi2$d8l$2@sea.gmane.org>
	<d5udc6$uk7$1@sea.gmane.org> <d5vapu$ahi$1@sea.gmane.org>
Message-ID: <b273c74105051206095e7e08fb@mail.gmail.com>

> 
> > Conclusion 1: if PHP is anything as awful as the manual, it is not for me.
> 
> the whole idea that turning the manual into a wiki or a forum will solve all
> problems is extremely naive.
> 

Wha?

I haven't done PHP for a couple of years, but when I really needed
documentation, the PHP docs were well organized, and told me exactly
what I needed, and when I didn't find it in the official part of the
docs, invariably someone had run into the same problem I had and
posted the solution at the end of the docs page.  It really is great
when you are actually doing PHP and it's your main resource.  Even if
you're just critisizing something that you're vaguely familliar with,
for the fun of it, you're not actually critisizing it as much as
calling it poo poo without any real world examples of why it "is
extremely naive" or what would work better...

One of the things I like about the python list is that it generally
has a high signal to noise ratio, but this is just noise...

-Jim


From mb3242 at gmail.com  Fri May 13 17:48:03 2005
From: mb3242 at gmail.com (mb3242 at gmail.com)
Date: 13 May 2005 14:48:03 -0700
Subject: Problems passing arrays into COM objects using win32com
Message-ID: <1116020883.148584.296300@o13g2000cwo.googlegroups.com>

Hello, I'm trying to use win32com to call a method in a COM object.
I'm having a problem with Python choosing the wrong type when wrapping
up lists into VARIANTs.

The function I'm trying to call in C++ looks like this:
HRESULT write([in] VARIANT * len, [in] VARIANT * saData, [out] VARIANT
* result);
Where saData contains a SafeArray of bytes and len is its length.  The
function returns any error information in result.

I'm using Python 2.4.1 with pywin32 build 204.  I access the COM object
using:
>>>  import win32com.client
>>>  o= win32com.client.Dispatch('foo.fooAPI.1')
>>>  o.write(2, [3,4])

If I run the COM object in the debugger, I can see what Python has
passed in.  len.vt = 0x0003; an integer as expected.  But saData.vt =
0x200C, an array of VARIANTs.  It should be an array of ints, but it's
not.

I've found a 1998 posting from the pythonCOM dev mailing list that
describes a similar problem, but the solution doesn't work for me:
http://mailman.pythonpros.com/pipermail/pycom-dev/1998q4/000006.html
Mark Hammond recommends using makepy to generate the type info ahead of
time, and using  win32com.client.Dispatch("...") instead of
win32com.client.dynamic.Dispatch("...").  At the time of that posting,
statically generated objects would map into arrays of ints (as
expected), while dynamically generated objects wouldn't.

This sounds reasonable, but I'm already doing what he recommends.  I've
looked around for other documentation, but I haven't had any luck. The
documentation (not surprisingly) hasn't kept up with changes over the
years. 

thanks,

Mark Brighton



From mwm at mired.org  Thu May 19 16:46:05 2005
From: mwm at mired.org (Mike Meyer)
Date: Thu, 19 May 2005 15:46:05 -0500
Subject: Twisted an several CPUs
References: <mailman.219.1116524003.8733.python-list@python.org>
Message-ID: <86sm0jymeq.fsf@guru.mired.org>

Jp Calderone <exarkun at divmod.com> writes:

>>Has anyone experience high load and twisted?
>   Distributing load across multiple machines scales better than distributing it over multiple CPUs in a single machine.  If you have serious scalability requirements, SMP is a minor step in the wrong direction (unless you're talking about something like 128-way SMP on a supercomputer :)

I agree. In my experience, heavily loaded machines doing network stuff
tend to load on I/O, not CPU. So more machines works better than more
CPU - though more bandwidth to disk or the network may be equally
useful.

The exception is if they are doing very CPU-intensive things in
response to network requests. In the latter case, spinning those
CPU-intensive things off to a separate process is a good option for
distributing the load across multiple CPUs. And with Twisted, you've
already got the framework in place to do that. In this scenario,
Twisted becomes a big switch, passing work requests off to other
processes, and returning the results back. That should be plenty
quick.

There are, of course, exceptions to pretty much everything.

      <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From mkent at webmd.net  Fri May 27 15:09:39 2005
From: mkent at webmd.net (mkent at webmd.net)
Date: 27 May 2005 12:09:39 -0700
Subject: Problem: using signal.alarm() to stop a run-away os.system() command
Message-ID: <1117220979.592923.95380@g44g2000cwa.googlegroups.com>

I'm trying to use signal.alarm to stop a run-away os.system command.
Can anyone exlain the following behavior?

Given following the trivial program:

import os
import signal

def timeoutHandler(signum, frame):
    print "Timeout"
    raise ValueError


signal.signal(signal.SIGALRM, timeoutHandler)
signal.alarm(5)

os.system("yes")

signal.alarm(0)


What I expect is that the Linux/UNIX 'yes' command (which runs until
terminated) would be stopped after 5 seconds, when the timeoutHandler
is called, thus raising a ValueError and terminating this example
program.  Instead, the 'yes' command run until it is terminated (by,
say, a kill command), at which time the timeoutHandler is called.  In
other words, the running of the 'yes' command acts like it is blocking
the SIGALRM signal until it terminates, at which time the SIGALRM
signal is raised.  This is quite surprising, and totally defeats my
ability to catch a run-away process.  Can anyone see what I'm doing
wrong?



From ruach at chpc.utah.edu  Wed May  4 16:44:10 2005
From: ruach at chpc.utah.edu (Matthew Thorley)
Date: Wed, 04 May 2005 14:44:10 -0600
Subject: using tarfile with an open file object
Message-ID: <d5bc6t$b8r$1@vegh.ks.cc.utah.edu>

I've been using tarfile like this

import tarfile
tar = tarfile.open('path_to_tar_archive', 'r:gz')


But I need to use it like this:

archive = open('path_to_tar_archive', 'r')
tar = tarfile.open(archive.readlines())

or something similar. In essence I need to use tarfile to manipulate an
already open file object. I searched in the docs but didn't find
anything. Maybe I just over looked the obvious.

Does any one know how to do this?

Thanks
-matthew


From snobis at gmx.de  Mon May 16 04:33:38 2005
From: snobis at gmx.de (Stefan Nobis)
Date: Mon, 16 May 2005 10:33:38 +0200
Subject: Newbie : checking semantics
References: <1115503520.392357.230620@f14g2000cwb.googlegroups.com>
Message-ID: <87d5rrsh7h.fsf@snobis.de>

"LDD" <loicderoyand at yahoo.fr> writes:

> The fact that python doesn't check if the symbol
> AFunctionThatIsntDefined is defined, is really bad when you
> develop big pieces of code.

Yes, that's one of my two points, that i think are misfeatures in
Python, too. The problem is, that Python don't distinguish between
defining/binding a variable and setting a value (for example in
contrast to Lisp, where binding and setting are two separate
operations (namley let and setq)).

The other point is a missing (optional) statement to end blocks
(so you optional don't have to mark block via whitespace). IMHO
this comes very handy in some cases (like mixing Python and HTML
like in PSP). From my experience i also would say beginners have
quite some problems with only whitespace marking blocks (but it
also has some benefits). So i'm not as sure about this as the
above point.

BTW: I would also appreciate a nicer syntax for classes (no
explicit self, no masses of _). But that's another story... :)

-- 
Stefan.


From rrr at ronadam.com  Mon May  2 09:48:11 2005
From: rrr at ronadam.com (rrr at ronadam.com)
Date: Mon, 02 May 2005 09:48:11 -0400
Subject: Python interpreter in Basic or a Python-2-Basic translator.
In-Reply-To: <1114953507.031865.244920@g14g2000cwa.googlegroups.com>
Message-ID: <4275F75B.1762.2B5D22@localhost>


On 1 May 2005 at 6:18, Engineer wrote:

> The security 'droids have decided that since the MS Office Suite is a
> "standard" application then software written in MS Office VBA must be
> "safe."  Any other development environments (such as Java, Perl,
> Cygwin) are "unsafe" and can't be installed.

This has more to do with engineers not risking their own jobs than 
being safe from virus's. 




From Sebastien.Boisgerault at gmail.com  Wed May  4 13:00:06 2005
From: Sebastien.Boisgerault at gmail.com (=?iso-8859-1?q?S=E9bastien_Boisg=E9rault?=)
Date: 4 May 2005 10:00:06 -0700
Subject: descriptor dilemma
In-Reply-To: <mailman.10.1115223751.29826.python-list@python.org>
References: <1115216416.700492.71020@f14g2000cwb.googlegroups.com>
	<1115223258.624304.198900@f14g2000cwb.googlegroups.com>
	<mailman.10.1115223751.29826.python-list@python.org>
Message-ID: <1115226006.543578.115730@z14g2000cwz.googlegroups.com>


Jeff Epler wrote:
> > >>> id(c.f) == id(C.__dict__['f'].__get__(c,C))
> > True
>
> Here, c.f is discarded by the time the right-hand-side of == is
> executed.  So the object whose id() is being calculated on the
> right-hand-side could turn out to be the same, since the two objects
> have disjoint lifetimes.

Understood. I guess I was influenced by C++ where a temporary survives
up to the end of the complete statement in which it was created. Right
?

SB



From fabienhenon_nospam_ at free.fr  Mon May  2 06:50:44 2005
From: fabienhenon_nospam_ at free.fr (fabien)
Date: Mon, 02 May 2005 12:50:44 +0200
Subject: gtk/qt scintilla help !
In-Reply-To: <mailman.8.1115002248.6583.python-list@python.org>
References: <mailman.8.1115002248.6583.python-list@python.org>
Message-ID: <42760615$0$24341$626a14ce@news.free.fr>

John Ridley wrote:
> fabien wrote on Sun, 01 May 2005 05:40:05 -0700:
> 
Hello John,
> 
>>Hi,
> 
> 
> Hello Fabien
> 
> 
>>I am writing a POV-RAY editor with Python using
>>either QT or GTK as GUI 'wrapper'. ( I am still trying both )
>>
>>[snip]
>>
>>I have also downloaded qscintilla-1.62-gpl-1.5.1.
>>As for GTK, I also found the LexPOV.cpp file, with
>>no POV keywords in it and with no POV keywords in
>>any of the file in the package.
>>The compilation builds then move the library
>>libqscintilla.so to /usr/lib/qt3/lib.
>>
>>How do I link the newly built library to the folling qt script :
>>
>>[snip]
> 
> 
> QScintilla is a port to Qt of the Scintilla editor control, and PyQt
> provides the python bindings for it. Scintilla has several dozen lexers
> (including one for POV), and QScintilla currently provides class
> wrappers for a small selection of them - but not POV, as you will see
> from the documentation:
> 
> http://www.river-bank.demon.co.uk/docs/qscintilla/hierarchy.html
> 
> Given this, there are two routes you can go down. You could ask the
> developer of QScintilla to provide support for POV by making a request
> via the mailing list:
> 
> http://www.riverbankcomputing.co.uk/pyqt/mailinglist.php
> 
> Or you could write your own POV lexer class in python using the
> existing QScintilla APIs. This is not particularly difficult, but it
> does take some working out. As you already know, a list of POV keywords
> is required. You will then need to look at the source (LexPOV.cpp and
> SciLexer.h) to see how the keywords are used and how the lexical states
> tie up with the SCE_POV enum. QScintilla's lexer classes are mainly
> wrappers around this information, so once you've worked it out, writing
> a python class based on QextScintillaLexer is fairly straightforward:

Well I have tried to use two files called "qextscintillalexerlua.cpp" 
and "qextsinctillalexerlua.h". I noticed that the LUA language used the 
same type of syntax as for POV. I copied them both to 
qextscintillalexerpov and replaced all the keywords found in them with 
POV-keywords.
I compiled and it worked : I got a libqscintilla.so that was modified in 
/usr/lib/qt3/lib.

The hitch is that a scintilla PYQT script also needs a file called
/usr/share/sip/qextscintillalexerperl.sip ( here for perl ).

I do not have a clue how to build a qextscintillalexerpov.sip file.

I looked at: http://www.river-bank.demon.co.uk/docs/sip/sipref.html
but it is all chinese to me. A do not  know C.


-> This is where I am going to contact river-bank for information.



> 
> 
>>>>class LexerPOV(QextScintillaLexer):
>>>>    def __init__(self, parent, name):
>>>>        QextScintillaLexer.__init__(self, parent, name)
>>>>    def lexer(self):
>>>>        return "pov"
>>>>    def color(self, style):
>>>>        # styles map to (SCE_POV enum)
>>>>        # return your own QColor
>>>>        # or return the base class default
>>>>        return QextScintillaLexer.color(self, style)
>>>>    def keywords(self, set):
>>>>        # if set == 0:
>>>>        #     return <pov keywords>
>>>>        # elif ...
>>>>        return 0
>>>>    def description(self, style):
>>>>        # if style == 0:
>>>>        #     return self.tr("Default")
>>>>        # elif ...
>>>>        return QString.null
> 
> 
Thanks for the example and for the information

Fabien

to reply, remove '_nospam_'

> Of course, this is a minimal lexer class - it is possible to be a lot
> more sophisticated than what is suggested here.
> 
> 
> John Ridley
> 
> Send instant messages to your online friends http://uk.messenger.yahoo.com 


From miki.tebeka at zoran.com  Sun May  1 10:27:49 2005
From: miki.tebeka at zoran.com (Miki Tebeka)
Date: Sun, 1 May 2005 17:27:49 +0300
Subject: Writing to log file when script is killed
In-Reply-To: <200504302228.13863.modelnine@ceosg.de>
References: <1114851873.072376.225820@z14g2000cwz.googlegroups.com>
	<1114864012.637007.295800@z14g2000cwz.googlegroups.com>
	<200504302228.13863.modelnine@ceosg.de>
Message-ID: <20050501142749.GS3204@zoran.com>

Hello Heiko,

> Am Samstag, 30. April 2005 14:26 schrieb wittempj at hotmail.com:
> > If you run on unix you can use the signal module to intercept a kill -
> > see http://docs.python.org/lib/node368.html for a quick example
> 
> You cannot intercept a kill (that's the whole meaning of SIGKILL, rather than 
> SIGTERM)... Read up on UNIX signal handling.
> 
> But, for the rest: you could intercept SIGTERM, log a message, and raise a 
> SystemExit exception. That should do the trick.
You can also use "register" from "atexit" module.

Bye.
--
------------------------------------------------------------------------
Miki Tebeka <miki.tebeka at zoran.com>
http://tebeka.bizhat.com
The only difference between children and adults is the price of the toys
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From dalke at dalkescientific.com  Wed May 18 02:29:32 2005
From: dalke at dalkescientific.com (Andrew Dalke)
Date: Wed, 18 May 2005 06:29:32 GMT
Subject: Representing ambiguity in datetime?
References: <mailman.121.1116368416.8733.python-list@python.org>
	<5hvk81prupnpinq4ucspsikdqns5rmcaf0@4ax.com>
	<%vxie.25534$VH2.13093@tornado.tampabay.rr.com>
Message-ID: <pan.2005.05.18.06.29.30.904969@dalkescientific.com>

Ron Adam wrote:
> This is a very common problem in genealogy research as well as other 
> sciences that deal with history, such as geology, geography, and archeology.
  ..
> So it seems using 0's for the missing day or month may be how to do it.

Except of course humans like to make things more complicated than that.
Some journals are published quarterly so an edition might be "Jan-Mar".
Some countries refer to week numbers, so an event might be in "week 12".

I offer no suggestions as to how to handle these cases.

				Andrew
				dalke at dalkescientific.com



From rhall at thiess.com.au  Wed May 18 04:50:56 2005
From: rhall at thiess.com.au (Bloke)
Date: 18 May 2005 01:50:56 -0700
Subject: SSL (HTTPS) with 2.4
In-Reply-To: <1116396878.995648.206820@g49g2000cwa.googlegroups.com>
References: <1116392416.139727.84630@g49g2000cwa.googlegroups.com>
	<428AD4D1.8030405@v.loewis.de>
	<1116396878.995648.206820@g49g2000cwa.googlegroups.com>
Message-ID: <1116406256.213128.68180@f14g2000cwb.googlegroups.com>

I just removed my installation of Python 2.4.1, which was the one on
the python.org web site.  I installed the Activepython 2.4.1 and now I
get the following error with the same code above:

 File "C:\Python24\lib\urllib2.py", line 1053, in unknown_open
    raise URLError('unknown url type: %s' % type)
URLError: <urlopen error unknown url type: https>

I'm getting a bit frustrated.  Do I need to import another library?
Any advise is appreciated.

Bloke.



From jello at comics.com  Tue May  3 14:13:05 2005
From: jello at comics.com (rzed)
Date: Tue, 03 May 2005 14:13:05 -0400
Subject: Setting the corner color in rotated PIL images
References: <Xns96494A613BC4Fjreeder@63.223.7.253>
	<mailman.91.1115117893.6583.python-list@python.org>
Message-ID: <Xns964B90C911676jreeder@63.223.7.253>

"Anthra Norell" <anthra.norell at tiscalinet.ch> wrote in
news:mailman.91.1115117893.6583.python-list at python.org: 

[in response to:
>> I'm using PIL to generate some images which may be rotated at
>> the user's option. When they are rotated, the original image is
>> cropped in the new image (which is fine), and the corners are
>> black (which is not, in this case). I can't find any documented
>> way to change the default fill color (if that's what it is) for
>> the corners, and PIL also doesn't seem to support a flood fill.
>> I have created a flood fill in Python, which works but which
>> markedly slows image generation.]

> I just had the same problem the other day. I solved it by
> starting out with an image large enough to retain enough white
> area following the rotation. 

Well, that's a workaround I could try, but I'm half-hearted about 
it. I don't like to think that it's *required*. Another possible 
solution is to make the outer portion black, so the rotation seems 
to do the right things, but in the cases I'm dealing with, that's 
either out or more trouble than it's worth. I can haul the rotated 
images into a paint program and manually touch up the corners, too, 
but I don't like to have to do that either.

It seems strange that there wouldn't be some way to change the 
black to another color, or (maybe just as good) to transparent. PIL 
is so useful that it strikes me as an aberrant oversight. More 
likely, there *is* a better way, but I just don't know it and can't 
find it in the docs. 

-- 
rzed



From skip at pobox.com  Mon May  9 14:36:53 2005
From: skip at pobox.com (Skip Montanaro)
Date: Mon, 9 May 2005 13:36:53 -0500
Subject: Inverse confusion about floating point precision
In-Reply-To: <1115661982.476675.7940@f14g2000cwb.googlegroups.com>
References: <mailman.218.1115660266.29826.python-list@python.org>
	<1115661982.476675.7940@f14g2000cwb.googlegroups.com>
Message-ID: <17023.44485.749242.50089@montanaro.dyndns.org>

    >> Why isn't the last result "958949.99999999996"?  IOW, how'd I get
    >> back the lost bits?

    Dan> You were just lucky.

Thanks for the response (and to Tim as well).

    Dan> The floating-point representation of 95.895 is exactly
    Dan> 6748010722917089 * 2**-46.

I seem to recall seeing some way to extract/calculate fp representation from
Python but can't find it now.  I didn't see anything obvious in the
distribution.

Thx,

Skip


From skip at pobox.com  Wed May 11 08:21:14 2005
From: skip at pobox.com (Skip Montanaro)
Date: Wed, 11 May 2005 07:21:14 -0500
Subject: Jabber/XML-RPC lib in Python?
In-Reply-To: <428177F3.6050201@mlug.missouri.edu>
References: <428177F3.6050201@mlug.missouri.edu>
Message-ID: <17025.63674.389278.591943@montanaro.dyndns.org>


    Michael> I was wanting to write a program that lets two machines
    Michael> communicate (without user intervention) using XML-RPC over a
    Michael> Jabber network. Does anyone know of an existing library suited
    Michael> to that task?

Googling for "Jabber XML-RPC Python" yielded this as the first hit:

    http://pyhacks.suddenthinks.com/

Skip


From steve at holdenweb.com  Mon May  2 21:51:41 2005
From: steve at holdenweb.com (Steve Holden)
Date: Mon, 02 May 2005 21:51:41 -0400
Subject: Europython schedule vs. accomodation/registration deadlines - HUH?
In-Reply-To: <xn0e1s852u3kn2008wolfgangkellernospamgmxde@news.individual.de>
References: <xn0e1s852u3kn2008wolfgangkellernospamgmxde@news.individual.de>
Message-ID: <d56l3b$e74$1@sea.gmane.org>

Wolfgang Keller wrote:
> Hello,
> 
> today I've read the following on the Europython WWW site:
> 
> http://www.europython.org/sections/registration_issues/registration_info
> rma
> 
> "Early bird payment ends 15 May."
> "Last day for reserving accomodations is 15 May."
> 
> http://www.europython.org/sections/tracks_and_talks/schedule_day_1
> 
> "The schedule will be posted in early June."
> 
> Are the people who are organising this aware of to what point this is -
> sorry - plain nonsense?
> 
> The attendees are supposed to register and reserve accomodation before
> even being able to know when/whether it will be worth attending for
> them?
> 
> This isn't serious, is it?
> 
> I'm sorry, but I've never encountered this with any kind of
> conference...
> 

Well in that case you clearly never became aware of PyCon 2004, where we 
made exactly the same kind of planning mistake. Sometimes when 
conferences are organized by volunteers this kind of thing slips by the 
sanity checkers until a potential delegate points it out.

regards
  Steve

PS we made sure to avoid this problem in 2005, though the Conference 
Committee had to work very hard to do so.
-- 
Steve Holden        +1 703 861 4237  +1 800 494 3119
Holden Web LLC             http://www.holdenweb.com/
Python Web Programming  http://pydish.holdenweb.com/



From stephane.bronsart at teledisnet.be  Sat May 14 07:35:04 2005
From: stephane.bronsart at teledisnet.be (StepH)
Date: Sat, 14 May 2005 13:35:04 +0200
Subject: Python 2.4 & BLT ?
In-Reply-To: <mailman.505.1115946013.29826.python-list@python.org>
References: <4280f791$0$344$4d4efb8e@read.news.be.uu.net>	<mailman.317.1115769735.29826.python-list@python.org>	<42823F8D.6010705@teledisnet.be>	<mailman.408.1115850748.29826.python-list@python.org>	<4283be30$0$349$4d4efb8e@read.news.be.uu.net>
	<mailman.505.1115946013.29826.python-list@python.org>
Message-ID: <4285E268.1010900@teledisnet.be>

Ron Adam a ?crit :
> StepH wrote:
> 
>> Ron Adam a ?crit :
>>
>>> StepH wrote:
>>>
>>>
>>>> Ron Adam a ?crit :
>>>>
>>>>
>>>>> StepH wrote:
>>>>>
>>>>>
>>>>>
>>>>>> Hi,
>>>>>>
>>>>>> I'm not able to install BLT on my Python 2.4 (upgraded to 2.4.1) 
>>>>>> distibution...
>>>>>>
>>>>>> I'v try to download btlz-for-8.3.exe, but when i try to install 
>>>>>> it, i've a msgbox saying to the file is corrupt...
>>>>>>
>>>>>> Any idea ?
>>>>>>
>>>>>> Thanks.
>>>>>>
>>>>>> StepH.
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> Have you tried blt2.4z-for-8.4exe?
>>>>>
>>>>> http://blt.sourceforge.net
>>>>
>>>>
>>>>
>>>>
>>>> yes.  When i try to execute it, a small msgbox apprea with the msg:
>>>> Corrupt installation detected!
>>>>
>>>> Any idea ?
>>>
>>>
>>>
>>> Sounds like it might not be a corrupted install exe file, but a 
>>> previously installed version that is corrupted.
>>>
>>
>>
>> Hum, i've try to re-install all from scratch without success...
>>
>>
>>> Does the message box say anything else?  With just "Corrupt 
>>> installation detected!", it could also be a support file or missing 
>>> dll that the installer needs.
>>
>>
>>
>> Yes.  It's the only message that is displayed.
>> I've to go ahead...  so for now i'll use tk.Canvas for my display...
>>
>> If you have idea ?
> 
> 
> A little googling found the following which may give you a clue or ideas 
> of further searches.  Also run a virus scanner on the file before hand.
> 
> http://www.noteworthysoftware.com/composer/faq/90.htm

Argg...  I always find me stupid when i don't have find myself a such 
easy solution.  Running the .exe from C:\temp works, but now, even if 
the installation succes, i'm not able to run the pmw sample based on 
it...  Looks like i've now to re-install pmw or somethings like that.

I'll find it...

Thanks a lot for your help.
StepH.

> http://www.transcender.com/faqs/detail.aspx?pn=tradwnldinstallarticle00900&full=True&tree=True 
> 
> http://www.visagesoft.com/help/index.php?_a=knowledgebase&_j=questiondetails&_i=5 
> 
> http://www.wise.com/KBArticle.aspx?articleno=1034
> 
> As a last resort, you may also be able to check the exe file by using a 
> zip file reader such as winzip or powerarchiver.  You should be able to 
> extract the individual files that way, but it may be a bit of a task to 
> figure out where to put them.
> 
> Hope this helps,
> 
> _Ron



From flyaflya at gmail.com  Tue May 31 00:19:59 2005
From: flyaflya at gmail.com (flyaflya)
Date: Tue, 31 May 2005 12:19:59 +0800
Subject: a newbie question  about debug
Message-ID: <d7gokv$70b$1@news.yaako.com>

I use pdb.set_trace() to debug code.the Debugger Commands "enable" and 
"disable" need argumet -- "breakpoint number",but I can't  find any 
information about it,so how to can i get the breakpoint number? I think 
"disable","enable" are very useful commands...


From evrim at ankabt.com  Mon May  2 14:50:10 2005
From: evrim at ankabt.com (Evrim Ozcelik)
Date: Mon, 02 May 2005 21:50:10 +0300
Subject: SQLRelay Problem
Message-ID: <42767662.5070201@ankabt.com>

Hi,
My zope server is running on fedore core3. I want to connect to ms sql 
server running on windows xp platform using FreeTDS, SQLRelay and 
ZSqlRelayDA. My sqlrelay.conf can be seen below:

<?xml version="1.0"?>
<!DOCTYPE instances SYSTEM "sqlrelay.dtd">

<instances>
   <instance id="mssql" port="9000" socket="/tmp/examplesocket" 
dbase="freetds" connections="1" maxconnections="15" maxqueuelength="5" 
growby="1" ttl="60" endofsession="commit" sessiontimeout="600" 
runasuser="nobody" runasgroup="nobody" cursors="5" authtier="listener" 
handoff="reconnect" debug="none">
      <users>
         <user user="evrim" password="123456"/>
      </users>
      <connections>
         <connection connectionid="db1" 
string="sybase=/usr/local/etc/freetds.conf;user=evrim;password=123456;server=MyServer2k;db=LKSDB;" 
metric="1"/>
      </connections>
   </instance>
</instances>

As you seen there is only 1 listener socket created. I can execute the 
first sql command successfully but i can't execute the second command. 
The sqlrelay error shown in the log file:

Client Library error:
        severity(78)
        layer(0)
        origin(0)
        number(51)
Error:  Attempt to initiate a new SQL Server operation with results pending.

I think the connection does not end after the execution. When all the 
listener sockets used the system becomes useless. Then i restart the 
sqlrelay service in order to clear the sockets.

What must i do ? The listener socket must be empty after the execution.


From ivanlan at pauahtun.org  Wed May 18 17:44:08 2005
From: ivanlan at pauahtun.org (Ivan Van Laningham)
Date: Wed, 18 May 2005 15:44:08 -0600
Subject: NaN support etc.
References: <mailman.160.1116438390.8733.python-list@python.org>
	<428ba190$0$7687$9b622d9e@news.freenet.de>
Message-ID: <428BB728.C4328FB1@pauahtun.org>

Hi All--

"Martin v. L?wis" wrote:
> 
> Andreas Beyer wrote:
> > How do I find out if NaN, infinity and alike is supported on the current
> > python platform?
> 
> To rephrase Sebastian's (correct) answer: by
> 
> 1. studying the documentation of the CPU vendor
> 2. studying the documentation of the compiler vendor, and performing
>    extensive tests on how the compiler deals with IEEE-754
> 3. studying the documentation of the system's C library, reading
>    its source code (if available), and performing extensive tests
>    of the IEEE-754 support in the C libray
> 4. studying Python's source code (you can spare yourself reading
>    documentation because there is none)
> 
> > Is there an 'official' handle for obtaining this information?
> 
> No.
> 
> > Similar: How do I get the maximum/minimum double for current machine?
> 
> By experimentation, and/or reading vendor documentation.
> 

Something that might help a little is

http://www.pauahtun.org/TYPython/machar.zip

It's C source that you can compile on a unix system, and an .exe for
windows, to probe the limits of the IEEE-754 support on a system.  It's
not set up to show you NaN, but by studying the docs on your particular
system you could modify the code to print stuff like that out, I'd
think.

Metta,
Ivan
----------------------------------------------
Ivan Van Laningham
God N Locomotive Works
http://www.andi-holmes.com/
http://www.foretec.com/python/workshops/1998-11/proceedings.html
Army Signal Corps:  Cu Chi, Class of '70
Author:  Teach Yourself Python in 24 Hours


From eurleif at ecritters.biz  Sat May 28 06:44:08 2005
From: eurleif at ecritters.biz (Leif K-Brooks)
Date: Sat, 28 May 2005 10:44:08 GMT
Subject: search/replace in Python
In-Reply-To: <mailman.209.1117263264.18027.python-list@python.org>
References: <d78opv$l99$1@domitilla.aioe.org>
	<mailman.209.1117263264.18027.python-list@python.org>
Message-ID: <YXXle.7711$Cz3.933739@monger.newsread.com>

Oliver Andrich wrote:
> re.sub(r"<google>(.*)</google>",r"<a
> href=http://www.google.com/search?q=\1>\1</a>", text)

For real-world use you'll want to URL encode and entityify the text:

import cgi
import urllib

def google_link(text):
    text = text.group(1)
    return '<a href="%s">%s</a>' % (cgi.escape(urllib.quote(text)),
                                    cgi.escape(text))

re.sub(r"<google>(.*)</google>", google_link, "<google>foo bar</google>)


From rhall at thiess.com.au  Wed May 18 03:49:03 2005
From: rhall at thiess.com.au (Bloke)
Date: 18 May 2005 00:49:03 -0700
Subject: How to learn OO of python?
In-Reply-To: <mailman.130.1116402087.8733.python-list@python.org>
References: <mailman.130.1116402087.8733.python-list@python.org>
Message-ID: <1116402543.485651.8300@g44g2000cwa.googlegroups.com>

The best one I found was Dive Into Python - and it's free

http://www.diveintopython.org/

Also, How to Think Like a computer scientist - can't remember the link.

Bloke



From mstarzyk at gmail.com  Mon May  2 09:58:26 2005
From: mstarzyk at gmail.com (Maciek Starzyk)
Date: Mon, 2 May 2005 15:58:26 +0200
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <20050502131339.GJ7085@gate2.hazen.net>
References: <d4u60o$akh$1@news2.netvision.net.il>
	<1114828856.889984.171750@g14g2000cwa.googlegroups.com>
	<1115036638.557573.153250@z14g2000cwz.googlegroups.com>
	<20050502131339.GJ7085@gate2.hazen.net>
Message-ID: <7a13e1e0505020658881dfe2@mail.gmail.com>

On 5/2/05, John Hazen <john at hazen.net> wrote:
> * mstarzyk at gmail.com <mstarzyk at gmail.com> [2005-05-02 05:10]:
> > Any hints on level 6 ?
> > There is "zip" in the page source, "ZIp" in the
> > image data, but have no clue what to do with them
> > - tried many things :).
> 
> Have you found the zip file yet?

Now I have it. Thanks :)

> (I did, and I still can't figure it out.  I'm wondering if there are
> comments embedded in the jpg that none of my viewers will show me.
> Hmm, maybe there's a python module that does that...  I'll play with it
> more after I sleep on it.)

Hint: Use Python module 'zipfile' :)

Thanks again,
-- 
Maciek Starzyk


From flamesrock at gmail.com  Fri May 27 17:22:06 2005
From: flamesrock at gmail.com (flamesrock)
Date: 27 May 2005 14:22:06 -0700
Subject: how to accomplish dl progress bars?
In-Reply-To: <87br6x9jlp.fsf@titan.staselog.com>
References: <1117067512.806516.262100@g14g2000cwa.googlegroups.com>
	<87br6x9jlp.fsf@titan.staselog.com>
Message-ID: <1117228926.255366.231120@z14g2000cwz.googlegroups.com>

thanks! I didn't realize it was in the cookbook:

http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/168639



From t.bettio at transnorm.ch  Tue May  3 16:40:34 2005
From: t.bettio at transnorm.ch (Tiziano Bettio)
Date: Tue, 03 May 2005 22:40:34 +0200
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <1f7befae0505031332f658594@mail.gmail.com>
References: <d4u60o$akh$1@news2.netvision.net.il>	<4277DC35.6020607@transnorm.ch>
	<1f7befae0505031332f658594@mail.gmail.com>
Message-ID: <4277E1C2.4000100@transnorm.ch>

Tim Peters wrote:

>[Tiziano Bettio]
>  
>
>>PLEASE HELP...
>>
>>What the hell do i have to pronounce in puzzle 5????
>>
>>Some useful hints would be awesome
>>    
>>
>
>That's a funny one:  I didn't understand the "pronounce it" hint until
>long after I solved that one.  Then again, Guido & I implemented PEP
>307, so I knew what to do the instant I saw the file <wink>.
>  
>
well finally also i got the hint... but what to do on the next page that 
follows???? i don't seem to get to puzzle 6...

greets


From roccomoretti at hotpop.com  Tue May 24 12:50:09 2005
From: roccomoretti at hotpop.com (Rocco Moretti)
Date: Tue, 24 May 2005 11:50:09 -0500
Subject: Dr. Dobb's Python-URL! - weekly Python news and links (May 24)
In-Reply-To: <d6vgpr$jlb$1@lairds.us>
References: <d6vgpr$jlb$1@lairds.us>
Message-ID: <d6vm00$h1s$1@news.doit.wisc.edu>

Simon Brunning wrote:
> QOTW: "If you're sick of answering newbie questions, and don't think you
> can do so politely, for the sake of the community, DON'T!  You're not that
> necessary." - Joal Heagney

Taken out of context, Joal's comments might seem a bit rude and abrasive 
- I don't think they were meant that way. People really should look at 
the context of the quote - it'a actually a very constructive suggestion.

(If the direct link works:)
http://groups-beta.google.com/group/comp.lang.python/msg/6330925dcecb6bdb

(If not, go to http://groups.google.com and search "Joal Heagney 
politely group:comp.lang.python" Click on the "Python Polymorphism" thread.)


From jwkenne at attglobal.net  Tue May 24 09:30:10 2005
From: jwkenne at attglobal.net (John W. Kennedy)
Date: Tue, 24 May 2005 09:30:10 -0400
Subject: What are OOP's Jargons and Complexities?
In-Reply-To: <1779523.9sBn8HKUcY@yahoo.com>
References: <1116843761.619249.144790@g47g2000cwa.googlegroups.com>
	<bAske.14563$yx.14338@fe08.lga> <1779523.9sBn8HKUcY@yahoo.com>
Message-ID: <zYFke.46627$HJ2.44911@fe11.lga>

alex goldman wrote:
> John W. Kennedy wrote:
> 
> 
>>Strong
>>typing has been a feature of mainstream programming languages since the
>>late 1950's.
> 
> 
> Is Fortran a strongly typed language? I don't think so. Strong typing has
> been invented in the 70's, if I'm not mistaken, when ML was invented, but
> strong typing has never been mainstream.

I begin to believe that I have been reading naughty references, and that 
I should rather have said "statically typed".

I am not familiar with modern Fortran. Surely it at least has argument 
prototyping by now?

-- 
John W. Kennedy
"You can, if you wish, class all science-fiction together; but it is 
about as perceptive as classing the works of Ballantyne, Conrad and W. 
W. Jacobs together as the 'sea-story' and then criticizing _that_."
   -- C. S. Lewis.  "An Experiment in Criticism"


From jmdeschamps at cvm.qc.ca  Sat May 14 08:10:12 2005
From: jmdeschamps at cvm.qc.ca (jmdeschamps at cvm.qc.ca)
Date: 14 May 2005 05:10:12 -0700
Subject: Importing modules
References: <1115816747.292060.292200@o13g2000cwo.googlegroups.com>
	<1115909950.205983.224430@o13g2000cwo.googlegroups.com>
	<mailman.492.1115923363.29826.python-list@python.org>
Message-ID: <1116072612.854913.262590@g43g2000cwa.googlegroups.com>

CONTEXT:
Trying to modularize (is this english?) application development : MVC
style, team distributed so that a visual component can be in one module
imported and used  by the __main__, and connected (read packed) at
runtime to other components coming from the main or other modules.

PROBLEM:
After reading the above reference (and the Nutshell chapter) and trying
different importing variations I still have a very difficult time
understanding this situation.
1-importing Tkinter in main,
2-importing module that uses Tkinter, without importing Tkinter in that
module (DOES NOT WORK)
KLUDGED SOLUTION:
import Tkinter in module (but don't understand why it has to be this
way)

MODEL (I taught would work):
## importTestMain module
from Tkinter import *
import testModule

tata = testModule.toto() ## this works
myWidget = tata.createNewFrame() ## this gets the exception (see below)
...

## testModule
class toto(object):
    def __init__(self):
        self.someAttribute= 2
    def createNewFrame(self):
        self.myFrame = Frame()    ## culprit line in exception
        return f

if __main__=='__name__':  ## team member tests is work here (does
work!)
    from Tkinter import *
    myInstance = otherModule.toto()
    myWidget = myInstance.createNewFrame()
    root=Tk()
    myWidget.pack(in_=root)
    root.mainloop()

The exception says :
Traceback (most recent call last):
  File
"C:\Python23\Lib\site-packages\pythonwin\pywin\framework\scriptutils.py",
line 310, in RunScript
    exec codeObject in __main__.__dict__
  File
"C:\jean_marc\exemples_code_source\modules_packages\import_test\importTestMain.py",
line 18, in ?
    tata=toto()
  File
"C:\jean_marc\exemples_code_source\modules_packages\import_test\importTestMain.py",
line 10, in __init__
    self.myNewFrame =
self.myTestModuleObject.createNewFrame(self.myInterModuleTestCommand)
  File
"C:\jean_marc\exemples_code_source\modules_packages\import_test\testModule.py",
line 8, in createNewFrame
    self.myFrame = Frame()
NameError: global name 'Frame' is not defined
>>>

VARIATION
Imported testModule AFTER using Tkinter in main... same error :(



From tjreedy at udel.edu  Tue May 10 13:31:52 2005
From: tjreedy at udel.edu (Terry Reedy)
Date: Tue, 10 May 2005 13:31:52 -0400
Subject: Solipsis: Python-powered Metaverse
Message-ID: <d5qqo7$3dc$1@sea.gmane.org>

Today I followed a link to an interesting Python application I have not 
seen mentioned here before:  http://solipsis.netofpeers.net/wiki/HomePage/.

"A peer-to-peer system for a massively multi-participant virtual world "

It is a France Telecom R&D project, LGPL licenced, still in alpha, built on 
Python, Twisted, WxPthon, PIL, and probably other components actual or 
considered.  The new Node software, rewritten with Twisted, was released 
yesterday.

Terry J. Reedy







From rschroev_nospam_ml at fastmail.fm  Tue May  3 08:36:04 2005
From: rschroev_nospam_ml at fastmail.fm (Roel Schroeven)
Date: Tue, 03 May 2005 12:36:04 GMT
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <mailman.78.1115096637.6583.python-list@python.org>
References: <d4u60o$akh$1@news2.netvision.net.il>	<mailman.47.1114818531.14961.python-list@python.org>	<1114924100.296223.114020@g14g2000cwa.googlegroups.com>	<1114927892.321086.60190@z14g2000cwz.googlegroups.com>	<zX%ce.78213$ft1.5056576@phobos.telenet-ops.be>	<Zj2de.78345$a42.5091422@phobos.telenet-ops.be>	<mailman.6.1115001137.6583.python-list@python.org>	<3dmi74F6q7m6hU2@individual.net>	<mailman.73.1115090620.6583.python-list@python.org>	<1115094028.508122.174390@l41g2000cwc.googlegroups.com>
	<mailman.78.1115096637.6583.python-list@python.org>
Message-ID: <UeKde.80050$R05.5131372@phobos.telenet-ops.be>

John Hazen wrote:

> Hmmm.  The title of the html page is "dealing evil".  If you were
> playing war instead of solitaire, how would you change how you deal the
> cards?

Hm, I'm not familiar with playing war. You couldn't elaborate a bit on 
that, could you?

-- 
If I have been able to see further, it was only because I stood
on the shoulders of giants.  -- Isaac Newton

Roel Schroeven


From xah at xahlee.org  Tue May 31 05:44:48 2005
From: xah at xahlee.org (Xah Lee)
Date: 31 May 2005 02:44:48 -0700
Subject: What are OOP's Jargons and Complexities?
In-Reply-To: <1117264336.229771.245070@g49g2000cwa.googlegroups.com>
References: <1116843761.619249.144790@g47g2000cwa.googlegroups.com>
	<1117003340.900449.124180@o13g2000cwo.googlegroups.com>
	<1117264336.229771.245070@g49g2000cwa.googlegroups.com>
Message-ID: <1117532688.513061.162750@f14g2000cwb.googlegroups.com>

the Rise of ?Access Specifiers? (or, the Scoping Complexity of OOP)

In programing, a variable has a scope ? meaning where the variable
can be seen. Normally, there are two basic models: dynamically scoped
and lexically scoped. Dynamic scoping is basically a time based system,
while lexical scoping is text based (like ?what you see is what you
get?). For example, consider the following code:
subroutine f() {return y}
{y=3; print f()}

In dynamic scoping, the printed result is 3, because during evaluation
of the block all values of y is set to 3. In lexical scoping, ?y?
is printed because any y in the block is set to 3 before f is called.
With regards to language implementation, Dynamic Scoping is the
no-brainer of the two, and is the model used in earlier languages. Most
of the time, lexical scoping is more natural and desired.

Scoping is also applicable to subroutines. That is to say, where
subroutines can be seen. A subroutine's scope is usually at the level
of source file (or a concept of a module/package/library), because
subroutines are often used in the top level of a source file, as
opposed to inside a code block like variables.

In general, the complexity of scoping is really just how deeply nested
a name appears. For example see in the following code:
name1;     // top level names. Usually subroutines, or global
variables.
{
  name2    // second level names. Usually variables inside subroutines.
  {
    name3  // deeper level names. Less often used in structured
programing.
  }
}

If a programing language uses only one single file of commands in
sequence as in the early languages such as BASIC, there would be no
scoping concept. The whole program is of one single scope.

OOP has created a immense scoping complexity because its mode of
computing is calling nested subroutines (methods) inside subroutines
(classes). We detail some aspects in the following.

In OOP, variables inside subroutines (class variables) can also be
accessed thru a reference the subroutine is assigned to (that is, a
object). In OOP parlance: a variable in a class has a scope, while the
same variable when the class is instantiated (a objet) is a different
scoping issue. In other words, OOP created a new entity ?variable
thru reference? that comes with its own scoping issue. For example:
class a_surface() {
  coordinates={...};               // a variable
}

class main() {
  mySurface = new a_surface();
  mySurface.coordinates = {...};   // the same variable
}

In the above code, the variable ?coordinates? appears in two
places. Once as defined inside a_surface, and once as a instantiated
version of a_surface, that is, a object. The variable as thru the
object reference apparently has a entirely different scoping issue than
the same variable inside the subroutine (class) definition. The
question for OOP language designers is: what should the scope be for
variables referred thru objects? Within the class the object is
created? within the class the variable is defined? globally? (and what
about inherited classes? (we will cover OOP inheritance later))

As we've seen, methods are just inner-subroutines, and creating objects
to call methods is OOP's paradigm. In this way, names at the
second-level programing structure often associate with variables (and
inner-subroutines), is now brought to the forefront. This is to say,
the scoping of subroutines are raised to a level of complexity as the
scoping of variables. (they are now both in the 2nd level of names (or
deeper).)

All in all, the scoping complexities of OOP as applied to different OOP
entities (classes, class variables, class's methods, object variables
and methods) is manifested as access specifiers in Java. In Java,
access specifiers are keywords ?private?, ?protected?,
?public?, used to declare the scope of a entity. Together with a
default scope of no-declaration, they create 4 types of scope, and have
entirely different effects when used upon a variable, a method, a
constructor, and a class.

See this tutorial of Java's access specifiers for detail:
http://xahlee.org/java-a-day/access_specifiers.html
-----
to be continued tomorrow.

This is part of an installment of the article
?What are OOP's Jargons and Complexities?
by Xah Lee, 20050128. The full text is at
 http://xahlee.org/Periodic_dosage_dir/t2/oop.html

? Copyright 2005 by Xah Lee. Verbatim duplication of the complete
article for non-profit purposes is granted.

The article is published in the following newsgroups:
comp.lang.c,comp.lang.c++,comp.lang.lisp,comp.unix.programmer
comp.lang.python,comp.lang.perl.misc,comp.lang.scheme,comp.lang.java.programmer
comp.lang.functional,comp.object,comp.software-eng,comp.software.patterns

 Xah
 xah at xahlee.org
? http://xahlee.org/



From dylan.moreland at gmail.com  Mon May 30 17:46:27 2005
From: dylan.moreland at gmail.com (dylan.moreland at gmail.com)
Date: 30 May 2005 14:46:27 -0700
Subject: plotting with Python
In-Reply-To: <429aeac6$1@news.fhg.de>
References: <429aeac6$1@news.fhg.de>
Message-ID: <1117489587.774681.186360@f14g2000cwb.googlegroups.com>

We use dislin in my lab. I don't think it's GPL...

http://www.linmpi.mpg.de/dislin



From jstroud at mbi.ucla.edu  Fri May  6 18:38:24 2005
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Fri, 6 May 2005 15:38:24 -0700
Subject: hard memory limits
In-Reply-To: <d5gphu$hij$1@domitilla.aioe.org>
References: <d5f9jl$k6d$1@domitilla.aioe.org>
	<mailman.88.1115374567.29826.python-list@python.org>
	<d5gphu$hij$1@domitilla.aioe.org>
Message-ID: <200505061538.24026.jstroud@mbi.ucla.edu>

Sorry Maurice, apparently in bash its "ulimit" (no n). I don't use bash, so I 
don't know all of the differences offhand. Try that.

James

On Friday 06 May 2005 03:02 pm, Maurice LING wrote:
> Hi everyone,
>
> thanks for your help.
>
> Yes, I'm using Mac OSX 1.3 with 256MB Ram. Each element in the list is a
> float. The list is actually a retrieved results of document IDs from
> SOAP interface. And Mac OSX does not have 'unlimit' command as shown,
>
> Maurice-Lings-Computer:~ mauriceling$ unlimit
> -bash: unlimit: command not found
> Maurice-Lings-Computer:~ mauriceling$ which unlimit
> Maurice-Lings-Computer:~ mauriceling$ sh unlimit
> unlimit: unlimit: No such file or directory
> Maurice-Lings-Computer:~ mauriceling$
>
>
> Cheers
> Maurice

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From vamsee_k at nospam.students.iiit.ac.in  Fri May 27 23:33:21 2005
From: vamsee_k at nospam.students.iiit.ac.in (Vamsee Krishna Gomatam)
Date: Sat, 28 May 2005 09:03:21 +0530
Subject: search/replace in Python
Message-ID: <d78opv$l99$1@domitilla.aioe.org>

Hello,
	I'm having some problems understanding Regexps in Python. I want
to replace "<google>PHRASE</google>" with
"<a href=http://www.google.com/search?q=PHRASE>PHRASE</a>" in a block of 
text. How can I achieve this in Python? Sorry for the naive question but 
the documentation is really bad :-(

Regards,
GVK


From tjreedy at udel.edu  Sat May 14 21:04:56 2005
From: tjreedy at udel.edu (Terry Reedy)
Date: Sat, 14 May 2005 21:04:56 -0400
Subject: A new to Python question
References: <1116088663.428932.130860@g43g2000cwa.googlegroups.com><rfnhl2-ig5.ln1@Bernd.Nawothnig.dialin.t-online.de><1116093118.599403.35940@g14g2000cwa.googlegroups.com><tsKdnfF2xaKu3BvfRVn-iQ@comcast.com><1116102355.715816.192840@z14g2000cwz.googlegroups.com><42866cb8.177725696@news.oz.net>
	<1116109657.494997.315650@o13g2000cwo.googlegroups.com>
Message-ID: <d6677c$22n$1@sea.gmane.org>


"M.E.Farmer" <mefjr75 at hotmail.com> wrote in message 
news:1116109657.494997.315650 at o13g2000cwo.googlegroups.com...
> But if the parens are just fluff then get rid of them, it is clearer *
> at least to me * ;)

While I find unnecessary parens on the right of '=' tolerable, I agree as 
to the style preference.

Terry J. Reedy





From could.net at gmail.com  Sat May  7 01:03:24 2005
From: could.net at gmail.com (could ildg)
Date: Sat, 7 May 2005 13:03:24 +0800
Subject: Found python for delphi new web site
Message-ID: <311b5ce10505062203270f97d1@mail.gmail.com>

http://mmm-experts.com/


From ptmcg at austin.rr.com  Wed May  4 10:52:09 2005
From: ptmcg at austin.rr.com (Paul McGuire)
Date: 4 May 2005 07:52:09 -0700
Subject: Better way to do parsing?
References: <mailman.146.1115201659.6583.python-list@python.org>
Message-ID: <1115218329.091226.30300@g14g2000cwa.googlegroups.com>

You asked for parsing, here's some pyparsing.  Download pyparsing at
http://pyparsing.sourceforge.net.
-- Paul

from pyparsing import *

IMPORT = Keyword("import")
AS = Keyword("as")
FROM = Keyword("from")
ident = Word(alphas+"_", alphanums+"_")

import1 = Group( IMPORT + ident + Optional( AS + ident ) )
import2 = Group( FROM + ident + IMPORT +
            ("*" | delimitedList( ident + Optional( AS + ident ) ) ) )

imports = import1 | import2
comment = "#" + restOfLine
imports.ignore(comment)


test = """
import useful
from useful import *
from useful import turn_around, turn_right, climb_up_east
import useful as use
from useful import turn_right
from useful import turn_right
from useful import turn_right as vire_a_droite, turn_left as
drehen_nach_links
import sys
from sys import *
# import in comment
# import sys
import useful
import sys
"""

results = OneOrMore( imports ).parseString( test )
for imp in results:
    print imp

===========
prints:
['import', 'useful']
['from', 'useful', 'import', '*']
['from', 'useful', 'import', 'turn_around', 'turn_right',
'climb_up_east']
['import', 'useful', 'as', 'use']
['from', 'useful', 'import', 'turn_right']
['from', 'useful', 'import', 'turn_right']
['from', 'useful', 'import', 'turn_right', 'as', 'vire_a_droite',
'turn_left', 'as', 'drehen_nach_links']
['import', 'sys']
['from', 'sys', 'import', '*']
['import', 'useful']
['import', 'sys']



From carlos80 at gmail.com  Mon May 23 13:32:18 2005
From: carlos80 at gmail.com (los)
Date: 23 May 2005 10:32:18 -0700
Subject: Running a python program during idle time only
In-Reply-To: <mailman.7.1116821147.18027.python-list@python.org>
References: <1116637560.499307.28700@o13g2000cwo.googlegroups.com>
	<mailman.7.1116821147.18027.python-list@python.org>
Message-ID: <1116869538.611233.264960@g14g2000cwa.googlegroups.com>

Thanks for all the replies.

I did try using nice under windows.  I created a java program that
would just loop and print numbers on the screen.  Even when I ran that
simple program with nice, (lets call it program A) as soon as I started
the program the cpu went all the way to 100% usage.  Then when I ran
another program that did the same thing (lets call it program B),
program A halted to let B finish, then it started again.  Nevertheless
it still hogged all the cpu while I was using the computer.

For my indexing program I just wrote a simple python program and called
on the python os.walk() method to iterate through the drive and then it
connects to a database to store some information.  Then I wrote a
simple interface to connect to the database to search for files using
visual basic.  Once everything is indexed it works fine, but it would
be nice to have the program looping through and indexing the files all
the time to account to file updates, deletes, and relocation, but
without hurting the performance when I'm using the computer.

So really what I am looking for is some way to have the program only
start indexing and crawling through the hd after 5 minutes of no user
interaction with the computer.

I'm going to take a look at this CPU load possibility.  But I'm afraid
that this will work similarly to "nice" in which case it will let the
program kick in when the CPU isn't being used heavily, but I might
still be using the computer.  

thanks once again!

-los



From jstroud at mbi.ucla.edu  Mon May  9 18:57:54 2005
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Mon, 9 May 2005 15:57:54 -0700
Subject: Unique Elements in a List
In-Reply-To: <1115676903.432187.294910@z14g2000cwz.googlegroups.com>
References: <1115676903.432187.294910@z14g2000cwz.googlegroups.com>
Message-ID: <200505091557.55027.jstroud@mbi.ucla.edu>

On Monday 09 May 2005 03:15 pm, superprad at gmail.com wrote:
> Is there an easy way to grab the Unique elements from a list?
> For Example:
> data = [0.1,0.5,0.6,0.4,0.1,0.5,0.6,0.9]
>
> what I am looking for is the unique elements 0.4 and 0.9 with their
> index from the list.
> Probably something like a Hash Table approach!!
> I would like to get this done without unnecessary overhead.And the list
> could be essentially anything strings,floats,int etc...
>
> Or is it already avaliable as an attr to a list or an array?
> I dont remember seeing anything like that.

from sets import Set

data = [0.1,0.5,0.6,0.4,0.1,0.5,0.6,0.9]

[x for x in Set(data) if data.count(x) == 1]

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From thomas.weholt at gmail.com  Wed May 11 05:16:27 2005
From: thomas.weholt at gmail.com (Thomas W)
Date: 11 May 2005 02:16:27 -0700
Subject: Serving binary data from a cgi-script
Message-ID: <1115802987.501881.282520@g14g2000cwa.googlegroups.com>

Hi,

I'm having some problems serving binary data in a simple CGI-script.
I'm setting content-type ( "application/octet-stream" ), content-length
and Content-disposition and I think these are correct, but the size of
the served file/data is different than the source. The read and write
the data I'm doing a plain :

f = open (..., 'rb')
d = f.read(2048)
while d:
  if not d: break
  print d
  d = f.read(2048)
f.close()

Any hints?

Best regards,
Thomas



From http  Tue May 17 06:54:52 2005
From: http (Paul Rubin)
Date: 17 May 2005 03:54:52 -0700
Subject: Windows distribution suggestions?
References: <7x3bsmfjdg.fsf_-_@ruckus.brouhaha.com>
	<d6c6e6$mlf$1@news01.versatel.de>
	<7xekc6p9tp.fsf@ruckus.brouhaha.com>
	<d6cd9k$ptk$1@news01.versatel.de>
Message-ID: <7xd5rqp1fn.fsf@ruckus.brouhaha.com>

Bernhard Holzmayer <Holzmayer.Bernhard at deadspam.com> writes:
> > Hmm, ok, it looks like the paid version is around 500 USD....
> > I'll see what the
> > customer says but I think they might resist.
> 
> 1) Maybe you can start with the 30days demo license to find out.

Yes, I'd certainly do that first.

> 2) The high price is paid for the benefit, that you won't get lost inside
> the terrific installation jungle like registry, access restrictions, dlls
> etc. In the end, it's your benefit, not your customer's.

Well, both would benefit, I think.

> If I were the customer, I'd demand a fluent installation process at no cost
> and without any risk and/or conflict with other installed software. 

Of course the customer wants this, but in reality it's going to have
to cost them, so I have to explain that and let them decide.  

> If I were the developer (you), I'd compare all costs/times with that price.
> If you calculate one hour for let's say 25 USD, the question is: will it
> save you 20 hrs. I guess so. If you have spare time, it doesn't get paid.

I wonder if I'd be trading off 20 hours messing with py2exe or
whatever, against 20 hours of learning curve with Wise.  Is Wise
really easy and fast to get started with?  Well, I guess that's what
the evaluation version is to help find out ;-).  

I'm concerned that it's going to be the same 20 hours either way (as
compared with just having them install python.msi separately), and 20
hours of development probably means a full week on the calendar
because of meetings, phone calls and all that usual stuff.  This app
is a small component of a big project and spending an extra week on it
means the whole project takes longer, which is never a good thing.

> > The app works ok under Windows now.  
> Congratulations.

Ehh, no big deal, there's not much system dependency so far, and it
was developed under Windows (with IDLE even) from the beginning.  It
may get more system dependent later.

> Then you'll probably use ODBC, since the MySQL server will probably not be
> run under Windows and on the same machine. 

Hmm, at least at first I'd run MySQL on the same machine under Windows
(I know MySQL can run under Windows) but maybe that still needs ODBC.
Eventually it may have to talk to another DB like Oracle.

> > I don't want to need an admin account.  
> Nobody wants that. It just happens...

Sigh.  I guess it figures.

> > reads and writes a few files and talks to some sockets.  
> Not that trivial! Plan enough time for testing.
> And, if you install without sophisticated tool, reserve enough time for
> troubleshooting and modifications...

Yeah, I really want to keep the installation stuff simple.  

> If the customer runs it on different machines, make sure that you always
> have one installation around where you work, which is exactly as the one at
> the customer's site.

Hmm, maybe not so easy, the customer may be using several different
Windows configurations in different places.

> If the customer is able to run different versions at
> the same time, keep one living copy of every possible version.

For now, I think I can say they have to track the current version.
It may be an issue in the future.

> [self-updating feature built into the app]
> Have a look at one of the Adobe Acrobat Reader's newest versions. They do
> this. Indeed, it doesn't work on my computer, but that's the idea...

Well, it's something to keep in mind, but I'm hoping this stays simple.

> > I just put the app's files in C:/Program Files/appname...
> 
> Don't do that,... In other countries even Windows uses different
> path names (e.g. here in Germany C:/Programme). 

Good point!!!  Yes, the customer will be running some non-English
Windows installations.  Thanks for mentioning this, I'm sure I would
have otherwise found out the hard way.  

> According to Microsoft's Technical Reference, you'd better ask the
> registry to find out where applications usually reside. (That's what
> professional installation software does.)

Hmm, I think there's a Python function to read registry entries.  I
better check the docs.  Can I just use C:/Appname like the Python
installer does?  If I have a way to launch the gui at all, I guess I
can have a configuration screen that lets the user change that
location.

> >> Isn't Visual C++ still coming with a restricted version of InstallShield?
> >> ...
> Check the installation. Your StartMenu should show the appropriate entry
> under VisualStudio/...tools... If not, maybe you forgot to install it.
> Or, it's gone away like some other precious tools...

I didn't see anything like that in the tools menu, but it's possible I
didn't install it.  I think it's a 2-CD installation and I only
installed one of them (the guy at the office said that's the usual
way).  It's Visual Studio 6 (the customer is on MSDN and supplied me
with the machine).

> In contrary, that's what really makes fun. The registry is like a bomb in
> your hand - it provides mighty power over the user!!!

Arrgghhh!  ;-)

> > and something is sure to eventually go wrong and corrupt 
> > the registry, if this is anything like the Windows that I'm used to
> > hearing about.  Sigh.  Just how bad is that under Windows XP?
> Don't worry. That's very secure and fairly straigth-forward. 

Well, ok, I guess these fancy installers must have gotten better with
that.  The usual disease I've seen is some installer wants to change
100 registry entries and something goes wrong halfway through, so only
50 of them get changed and the registry is then hopelessly
inconsistent.  It's not like a real database with atomic commits and
rollback.  The system still runs with the corrupt registry, but it
sort of degrades and crumbles and eventually you have to reinstall the
OS from scratch.  I remember a common syndrome with Windows 95 was the
MSIE browser scroll bar grew to about 3x its usual width.  Your system
was then within a few hours of becoming completely wedged.

> Are you sure that this had to do with registry modifications?
> Take a Linux box, remove the contents of /etc, and then reboot.
> What happens???
> You're not stupid, are you? 
> You wouldn't do that on Linux, so why should you spoil the registry?

Well, it's uncommon for any Linux user app to go messing around with
system files, especially dozens of them haphazardly.  Usually the app
puts its config info in its own file.  

> > and then I can put together a distutils setup.py thingie 
> > which they'd run separately.  
> You're familiar with that? If so, yes, that's feasible.

I haven't done it before, but the docs look reasonable, so I'm
assuming I can figure it out.

> But don't ask the user to launch setup.py.
> If there's a GUI anyhow, why not launch it from there.

Hmm, how would the GUI get started?  I don't like the idea of making
the user type "python setup.py install" from a dos prompt but just
double clicking on a setup.py (or install.py) icon doesn't seem too bad.

> What about this, since you have VisualC++ around:
> 
> Write a simple C++ app, which launches the Python installer, then launches a
> Python script which does all the other stuff?
> Call it Setup.exe, place it on the top level of your CD, and there you
> are...

Hmmm, is that easy to do?  Just fork a process, wait for it, and fork
another one?  Maybe that's the simplest idea of all.


From sjmaster at gmail.com  Wed May 18 14:20:27 2005
From: sjmaster at gmail.com (Steve M)
Date: 18 May 2005 11:20:27 -0700
Subject: Is Python suitable for a huge, enterprise size app?
In-Reply-To: <1116433218.495131.71260@g49g2000cwa.googlegroups.com>
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>
	<1116432325.497438.64580@g49g2000cwa.googlegroups.com>
	<1116433218.495131.71260@g49g2000cwa.googlegroups.com>
Message-ID: <1116440427.255902.36260@g49g2000cwa.googlegroups.com>

This thread:

http://mail.python.org/pipermail/python-dev/2005-January/051255.html

discusses the problem with memory allocation in CPython. Apparently
CPython is not good at, or incapable of, releasing memory back to the
operating system. There are ways to compensate for this. I guess the
comment about C modules was meant as one way to do so, either by
reducing memory requirement in the first place (C data structures are
more compact than Python) or else by allocating and freeing memory
wholly in the C module, which perhaps does work as expected.

The web page for Evan Jones does not obviously indicate the status of
the improved memory allocator patch he was working on. I wonder if it
is coming along.

Incidentally, does anyone know the prospects for CPython to be made
stackless? Say in 2.5 or 2.9? Or will that always be an independent
project?



From hpk at trillke.net  Sat May 21 09:37:25 2005
From: hpk at trillke.net (holger krekel)
Date: Sat, 21 May 2005 15:37:25 +0200
Subject: PyPy 0.6.1
In-Reply-To: <20050520213807.GK13541@solar.trillke.net>
References: <20050520213807.GK13541@solar.trillke.net>
Message-ID: <20050521133725.GA14182@solar.trillke.net>

Hi again,

On Fri, May 20, 2005 at 23:38 +0200, holger krekel wrote:
    > The PyPy 0.6 release
> --------------------

has already been superseded by the PyPy 0.6.1 bug-fix release.
We are temporarily not having access to that time machine 
and thus have to fix things the old way, unfortunately.  
But we are working on improving this situation.

The bug is trivial enough: py.py crashes on string formatting
the second time you run it. You can find the fixed packages
and svn-locations here:
    
    Getting started: 
    http://codespeak.net/pypy/index.cgi?doc/getting_started.html

have fun & sorry for the inconvenience,

    holger krekel


> *The PyPy Development Team is happy to announce the first 
> public release of PyPy after two years of spare-time and
> half a year of EU funded development.  The 0.6 release 
> is eminently a preview release.*  
> 
> What it is and where to start 
> -----------------------------
> 
> Getting started:    http://codespeak.net/pypy/index.cgi?doc/getting_started.html
> 
> PyPy Documentation: http://codespeak.net/pypy/index.cgi?doc
> 
> PyPy Homepage:      http://codespeak.net/pypy/
> 
> PyPy is a MIT-licensed reimplementation of Python written in
> Python itself.  The long term goals are an implementation that
> is flexible and easy to experiment with and retarget to
> different platforms (also non-C ones) and such that high
> performance can be achieved through high-level implementations
> of dynamic optimisation techniques.
> 
> The interpreter and object model implementations shipped with 0.6 can
> be run on top of CPython and implement the core language features of
> Python as of CPython 2.3.  PyPy passes around 90% of the Python language
> regression tests that do not depend deeply on C-extensions.  Some of
> that functionality is still made available by PyPy piggy-backing on
> the host CPython interpreter.  Double interpretation and abstractions
> in the code-base make it so that PyPy running on CPython is quite slow
> (around 2000x slower than CPython ), this is expected.  
> 
> This release is intended for people that want to look and get a feel
> into what we are doing, playing with interpreter and perusing the
> codebase.  Possibly to join in the fun and efforts.
> 
> Interesting bits and highlights
> ---------------------------------
> 
> The release is also a snap-shot of our ongoing efforts towards 
> low-level translation and experimenting with unique features. 
> 
> * By default, PyPy is a Python version that works completely with
>   new-style-classes semantics.  However, support for old-style classes
>   is still available.  Implementations, mostly as user-level code, of
>   their metaclass and instance object are included and can be re-made
>   the default with the ``--oldstyle`` option.
> 
> * In PyPy, bytecode interpretation and object manipulations 
>   are well separated between a bytecode interpreter and an 
>   *object space* which implements operations on objects. 
>   PyPy comes with experimental object spaces augmenting the
>   standard one through delegation:
> 
>   * an experimental object space that does extensive tracing of
>     bytecode and object operations;
> 
>   * the 'thunk' object space that implements lazy values and a 'become'
>     operation that can exchange object identities.
>   
>   These spaces already give a glimpse in the flexibility potential of
>   PyPy.  See demo/fibonacci.py and demo/sharedref.py for examples
>   about the 'thunk' object space.
> 
> * The 0.6 release also contains a snapshot of our translation-efforts 
>   to lower level languages.  For that we have developed an
>   annotator which is capable of infering type information
>   across our code base.  The annotator right now is already
>   capable of successfully type annotating basically *all* of
>   PyPy code-base, and is included with 0.6.  
> 
> * From type annotated code, low-level code needs to be generated.
>   Backends for various targets (C, LLVM,...) are included; they are
>   all somehow incomplete and have been and are quite in flux. What is
>   shipped with 0.6 is able to deal with more or less small/medium examples.
> 
> 
> Ongoing work and near term goals
> ---------------------------------
> 
> Generating low-level code is the main area we are hammering on in the
> next months; our plan is to produce a PyPy version in August/September 
> that does not need to be interpreted by CPython anymore and will 
> thus run considerably faster than the 0.6 preview release. 
> 
> PyPy has been a community effort from the start and it would
> not have got that far without the coding and feedback support
> from numerous people.   Please feel free to give feedback and 
> raise questions. 
> 
>     contact points: http://codespeak.net/pypy/index.cgi?contact
> 
>     contributor list: http://codespeak.net/pypy/index.cgi?doc/contributor.html 
> 
> have fun, 
> 
>     Armin Rigo, Samuele Pedroni, 
> 
>     Holger Krekel, Christian Tismer, 
> 
>     Carl Friedrich Bolz 
> 
> 
>     PyPy development and activities happen as an open source project  
>     and with the support of a consortium funded by a two year EU IST 
>     research grant. Here is a list of partners of the EU project: 
>         
>         Heinrich-Heine University (Germany), AB Strakt (Sweden)
> 
>         merlinux GmbH (Germany), tismerysoft GmbH(Germany) 
> 
>         Logilab Paris (France), DFKI GmbH (Germany)
> 
>         ChangeMaker (Sweden)
> 
> -- 
> http://mail.python.org/mailman/listinfo/python-list
> 


From flyaflya at gmail.com  Thu May 12 12:58:49 2005
From: flyaflya at gmail.com (flyaflya)
Date: Fri, 13 May 2005 00:58:49 +0800
Subject: Can  get  reference of a part of a list?
Message-ID: <d6020b$3a7$1@news.yaako.com>

I want make a 2-D array from a list,all elements is references of 
list's,like this:
a = [1,2,3,4]
b = [ [1,2], [3,4] ]
when change any elements of a, the elements of b will change too, so I 
can  use some function for list to change b.
c/c++ can work in this way,I think let b[0] = a[0:2], b[1] = a[2:3],but 
    it's not reference,it's copy.


From roman.yakovenko at gmail.com  Sun May 29 08:56:19 2005
From: roman.yakovenko at gmail.com (Roman Yakovenko)
Date: Sun, 29 May 2005 15:56:19 +0300
Subject: Is there a better way of doing this?
In-Reply-To: <a10b8d620505290513e8a95fa@mail.gmail.com>
References: <d79re2$sgg$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
	<a10b8d620505290513e8a95fa@mail.gmail.com>
Message-ID: <7465b6170505290556527c0c4f@mail.gmail.com>

On 5/29/05, Cyril BAZIN <cyril.bazin at gmail.com> wrote:
> Hi,
>  
>  I don't know very well what you want to do, but if you want to parse c++,
> take a look at "GCC-XML python" (http://www.gccxml.org) and the python
> binding (http://pygccxml.sourceforge.net/). These tools
> translate c++ code to XML. Then, you can parse xml with your favorite tools
> and find the namespaces for example...

Small correction: pygccxml does not translate C++ to xml. The purpose
of pygccxml is to read file generated by GCC-XML and provide simple
framework to navigate C++ declarations using python classes.

Roman


From anthra.norell at tiscalinet.ch  Mon May  9 18:12:20 2005
From: anthra.norell at tiscalinet.ch (Anthra Norell)
Date: Tue, 10 May 2005 00:12:20 +0200
Subject: Encryption with Python?
References: <1115324411.952821.150780@o13g2000cwo.googlegroups.com><001301c552db$dd19d3e0$0201a8c0@mcuf7>
	<d5i0as$ejd$1@sea.gmane.org><009901c552fb$220132e0$0201a8c0@mcuf7>
	<d5ier2$hqa$1@sea.gmane.org><mailman.213.1115652248.29826.python-list@python.org>
	<7x8y2oyyhf.fsf@ruckus.brouhaha.com>
Message-ID: <007e01c554e4$2b8d89e0$0201a8c0@mcuf7>

Paul,

      I thank you too for your response. Let me just tell you what goes
through my mind.

----- Original Message -----
From: "Paul Rubin" <"http://phr.cx"@NOSPAM.invalid>
Newsgroups: comp.lang.python
To: <python-list at python.org>
Sent: Monday, May 09, 2005 9:45 PM
Subject: Re: Encryption with Python?


> "Anthra Norell" <anthra.norell at tiscalinet.ch> writes:
> > The non-randomness of the difference is evidence of having guessed the
key,
> > right? Why then do I need two samples? If I hack away at a single sample
I
> > get a probably more conspicuous non-randomness twice as fast.
>
> No.  Let's say you encrypt two ascii strings with the same key.  The
> high bit of each byte in the plaintext is zero.  Therefore if you xor
> the two ciphertexts together, the high bit of each byte of the result
> xor'd ciphertexts will be zero.  So just check for that and you've
> immediately spotted the non-randomness.

I don't follow. There is no bitwise correlation between a plain-text
character and its encoded equivalent. What's more, there is no detectable
correlation at all. Take a highly ordered plain text, such as a sting of
identical characters, e.g. 'AAAAAAAAAAAAAAA' and sequentially add a
deterministically generated random series (module 256 to keep them within
range), what you get is, quite obviously, a series of numbers that differs
from the added random series in only one respect: all values are shifted by
ord ('A'). The intervals from one byte to the next remain unchanged,
allowance made for the module 256 wrap-around. The intervals remaining
unchanged, the distribution and hence the randomness of the encryption
remains unchanged. Quite obviously, each one of the identical plain-text
characters very likely will be encrypted differently. Repeats would occur,
but they would occur randomly once every 256 times on an average.

> > I don't doubt that, given a series (long enough), the postion can be
> > derived. I doubt, though, that a series is knowable, if another,
unknown,
> > series has been added to it.
>
> You have to assume that the attacker has access to known
> plaintext-ciphertext pairs.  For example, you might not tell someone
> the password you use now, but what about some old password that you
> don't use any more?  If the attacker knows your old password (maybe
> because your sysop set it to some default value and had you change it
> on your first login), and has the encrypted version, there's a known
> plaintext.

Password management is certainly a problem, but of course is totally
unrelated to the quality of an encryption method.

> > I thought the problem was concealing passwords from ones kids or
> > collaborators.
>
> Encryption is supposed to conceal data from knowledgable attackers
> willing to burn significant resources to get at the data.  That mightof
> or might not describe your friends and collaborators.

I agree. Depending on a situation, a solution might or might not be
adequate.

> > I believe that a randomly distributed series utterly obliterates any
> > non-randomness or regularity of a second series, if the two are added.
>
> This is a meaningless statement since you don't give any definition of
> "randomly distributed series".

No, in fact I don't. I am quite confident that the library module 'random'
produces random distributions. As to the distribution of a non-random series
added to a random series, my intuition tells me that it remains random.

> > I don't know how to produce a formal proof. It is just a hunch. It's
> > actually more than a hunch. It is a conviction. Not a certainty; a
> > conviction. I'd be delighted to be proved wrong (or right).

I don't think it would be difficult for a mathematician to prove or disprove
the hypothesis. I did come up with an informal proof. It is a function I
will add at the bottom of this message. You can copy and run it, if you have
the Image package installed.

>
> If the keystream really can't be distinguished from random, then correct,
> though there's still issues with key management (you mustn't use the same
> key twice) and authentication.

The key is the seed of the random generator.

> Generating keystreams that are indistinguishable from random is an
> extremely tricky subject, there are books and papers written about it,
etc.

I agree. I wouldn't know how to design a random generator. Fortunately I
don't need to. I can use ready made ones.

> > The fact may be significant that we module overflow back into the
> > range.  So, if the distribution of my code is indeed random,

> Your code used the Python built-in PRNG algorithm which is designed to
> make output with similar statistical properties as actual random numbers,
> for the purpose of running stuff like simulations.  It makes no attempt
> at all to be secure against attackers trying to figure out whether the
> output is really random.

Try out the following function. You need the Image package.

Regards

Frederic

###############################################

def informal_proof_of_randomness (text_file_name):    # File must be longer
than 60K

   X = 0
   Y = 1

   import random

   NUMBER_OF_DOTS = 30000

   # Make three lists to collect coordinate pairs
   random_coordinates       = NUMBER_OF_DOTS * [None]
   plain_text_coordinates   = NUMBER_OF_DOTS * [None]
   encoded_text_coordinates = NUMBER_OF_DOTS * [None]

   # Fill one with random numbers
   for i in xrange (NUMBER_OF_DOTS):
      x = random.randint (0,255)
      y = random.randint (0,255)
      random_coordinates [i] = ((x,y))

   # Fill a second one with ascii codes (plain text)
   f = file (text_file_name, 'rb')
   for i in xrange (NUMBER_OF_DOTS):
      # No check if file runs out prematurely. Make sure it's at least 60K
      x = ord (f.read (1))
      y = ord (f.read (1))
      plain_text_coordinates [i] = ((x,y))
   f.close ()

   # Fill a third one with the sum of the two previous ones (proposed cipher
text)
   for i in xrange (NUMBER_OF_DOTS):
      encoded_text_coordinates [i] = \
         (random_coordinates [i][X] + plain_text_coordinates [i][X]) % 256,
\
         (random_coordinates [i][Y] + plain_text_coordinates [i][Y]) % 256


   import Image

   WHITE = 1
   BLACK = 0

   # Make three images to visualize the distribution
   random_image       = Image.new ('1', (256,256), WHITE)
   text_image         = Image.new ('1', (256,256), WHITE)
   encoded_text_image = Image.new ('1', (256,256), WHITE)

   for coordinate in random_coordinates:
      random_image.putpixel (coordinate, BLACK)

   for coordinate in plain_text_coordinates:
      text_image.putpixel (coordinate, BLACK)

   for coordinate in encoded_text_coordinates:
      encoded_text_image.putpixel (coordinate, BLACK)

   # Visualize the distributions
   random_image.show ()         # Looks like rain on a pavement
   text_image.show ()           # Does not at all
   encoded_text_image.show ()   # See for yourself

##############


> http://mail.python.org/mailman/listinfo/python-list



From roccomoretti at hotpop.com  Tue May 31 15:21:34 2005
From: roccomoretti at hotpop.com (Rocco Moretti)
Date: Tue, 31 May 2005 14:21:34 -0500
Subject: working with pointers
In-Reply-To: <d7icc5$ab0$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
References: <d7iapk$6ck$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>	<JJSdnXLcZdUsLQHfRVn-1w@comcast.com><d7ibjg$8en$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
	<mailman.299.1117566077.18027.python-list@python.org>
	<d7icc5$ab0$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
Message-ID: <d7idft$cgo$1@news.doit.wisc.edu>

> "Dave Brueck" <dave at pythonapocrypha.com> wrote in message
> news:mailman.299.1117566077.18027.python-list at python.org...
> 
>>Michael wrote:
>>
>>>sorry, I'm used to working in c++ :-p
>>>
>>>if i do
>>>a=2
>>>b=a
>>>b=0
>>>then a is still 2!?
>>>
>>>so when do = mean a reference to the same object
>>
>>Always.
>>
>>
>>>and when does it mean make a copy of the object??
>>
>>Never.
>>

Michael wrote:
 > except numbers??
 >

1) Please avoid top posting

2) '=' always makes a reference. It's just that

'b = 0' makes a *new* reference for b to 0, without changing the 
reference of a to 2.

b.pop() modifies the object referenced by b itself, which, since it is 
referenced by both a & b, means that the object referenced by a is also 
modified.

see also:

http://starship.python.net/crew/mwh/hacks/objectthink.html


From cowie.rob at gmail.com  Sun May 29 12:33:03 2005
From: cowie.rob at gmail.com (Rob Cowie)
Date: 29 May 2005 09:33:03 -0700
Subject: Help with choice of suitable Architecture
In-Reply-To: <6hlom2-353.ln1@lairds.us>
References: <1117299643.380598.5540@g47g2000cwa.googlegroups.com>
	<atgh91hlophgsuio8qctrht31q03mght4b@4ax.com>
	<1117311160.307176.216430@o13g2000cwo.googlegroups.com>
	<7xr7frm704.fsf@ruckus.brouhaha.com> <6hlom2-353.ln1@lairds.us>
Message-ID: <1117384383.134629.142970@z14g2000cwz.googlegroups.com>

Thanks for the comments.

I kind of get the impression that CGI is the way to go for this
application, and that I should forget about adding client-side
scripting based functionality for the sake of accessibility - which I
understand and kind of agree with.

I'll look into the problem of concurrent access to an XML file. I may
get back to the group about this!

Cheers



From fperez.net at gmail.com  Tue May 10 13:12:10 2005
From: fperez.net at gmail.com (Fernando Perez)
Date: Tue, 10 May 2005 11:12:10 -0600
Subject: Listing of declared variables and functions
References: <1115657899.543887.284720@f14g2000cwb.googlegroups.com>
Message-ID: <d5qpj9$tib$1@sea.gmane.org>

ohms377 wrote:

> Dear python users,
> 
> In interactive mode, I was wondering if there is a way to list all
> declared variables and functions (and from global workspace).

In [1]: def foo(): pass
   ...:

In [2]: x=1

In [3]: a='hello'

In [4]: import re

In [5]: whos
Variable   Type        Data/Info
--------------------------------
a          str         hello
foo        function    <function foo at 0x403b725c>
re         module      <module 're' from '/usr/lib/python2.3/re.pyc'>
x          int         1

In [6]: whos int
Variable   Type    Data/Info
----------------------------
x          int     1


This is using ipython for the interactive work.

Cheers,

f



From mwm at mired.org  Thu May 19 02:33:51 2005
From: mwm at mired.org (Mike Meyer)
Date: Thu, 19 May 2005 01:33:51 -0500
Subject: processing a Very Large file
References: <mailman.114.1116358282.8733.python-list@python.org>
	<118mdpnji58bvb6@corp.supernews.com>
Message-ID: <86wtpv3esw.fsf@guru.mired.org>

DJTB <usenet at terabytemusic.cjb.net> writes:
> I'm not a Python memory specialist, but does del immediately release/free
> the memory to the OS? I thought it was impossible to let Python immediately
> release memory.

Unknown. Python relies on the C alloc/free routines for handling
memory. del may immediately free() the memory (I don't know), but that
doesn't mean it gets released to the OS. None of the implementations
of alloc/free I'm aware of ever give the memory back to the OS. They
store it in a data structure for internal reuse.

If you hang out in Unix OS support groups (I use to hang out on
questions at freebsd.org), you get used to seeing questions about "My
program freed up the memory, but the size didn't shrink. Why
not?". The above is the standard answer.

      <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From http  Thu May 26 02:21:25 2005
From: http (Paul Rubin)
Date: 25 May 2005 23:21:25 -0700
Subject: Checking for a full house
References: <1117071824.882035.250710@g49g2000cwa.googlegroups.com>
	<1117085950.739186.14240@z14g2000cwz.googlegroups.com>
	<1117086974.854184.5930@g43g2000cwa.googlegroups.com>
Message-ID: <7x8y22v76i.fsf@ruckus.brouhaha.com>

"Raymond Hettinger" <python at rcn.com> writes:
> Your use case for gathering roll statistics probably needs a more
> general solution:
> 
> hands = {
>     (1,1,1,1,1): 'nothing',
>     (1,1,1,2): 'one pair',
>     (1,2,2): 'two pair',
>     (1,1,3): 'three of a kind',
>     (2,3): 'full house',
>     (1,4): 'four of a kind',
>     (5): 'flush (five of a kind)'
> }
> 
> def eval_hand(hand):
>     counts = tuple(sorted(hand.count(card) for card in set(hand)))
>     return hands.get(counts, 'misdeal')

1. "Flush" means 5 cards of the same suit (i.e. all hearts), not 5 of
   a kind.

2. That code doesn't detect flushes or straights.


From black.bird at NOSPAMtiscali.it  Mon May  2 17:14:29 2005
From: black.bird at NOSPAMtiscali.it (Michele Ferretti)
Date: Mon, 02 May 2005 21:14:29 GMT
Subject: WordPress Python Library 1.0
In-Reply-To: <mailman.49.1115067917.6583.python-list@python.org>
References: <Rmwde.850131$b5.37722456@news3.tin.it>
	<mailman.49.1115067917.6583.python-list@python.org>
Message-ID: <VKwde.1322130$35.49403624@news4.tin.it>

Fran?ois Pinard wrote:
> [Michele Ferretti]
> 
>>http://www.blackbirdblog.it/programmazione/progetti/28
> 
> 
> Quoted above, the full content of your article.  Is it a message?  It
> surely does not look like an English sentence.
> 
> Should we start a browser each time we see an URL?  Many of us are not
> in such an Internet starvation.  If you want to raise our appetite,
> maybe a few words of introduction or explanation would be welcome. :-)
> 

ok, sorry, but subject is very explicit!

-- 

Michele Ferretti

ICQ#: 14491159
Skype: m.ferretti79
black DOT bird AT tiscali DOT it
www.blackbirdblog.it


From pecoraREMOVE at THISanvil.nrl.navy.mil  Tue May 17 14:18:28 2005
From: pecoraREMOVE at THISanvil.nrl.navy.mil (Lou Pecora)
Date: Tue, 17 May 2005 14:18:28 -0400
Subject: OSx 10.4 lacks pythonIDE?
References: <2005051303214075249%baza@NOSPAMthemauvezoneorguk>
	<mailman.508.1115951783.29826.python-list@python.org>
	<BEAAA2F4.473%baza41@gmail.com>
	<mailman.45.1116006655.29328.python-list@python.org>
Message-ID: <pecoraREMOVE-9A42EE.14182817052005@ra.nrl.navy.mil>

In article <mailman.45.1116006655.29328.python-list at python.org>,
 Robert Kern <rkern at ucsd.edu> wrote:

> I'm told Xcode does a tolerable job with Python.

I just took a look at Xcode and it's not obvious how to run a script.  I 
suspect I need a project?  Then run?  The docs say nothing that I can 
find.

Thanks.

-- Lou Pecora  (my views are my own) REMOVE THIS to email me.


From hpk at trillke.net  Thu May 26 08:35:18 2005
From: hpk at trillke.net (holger krekel)
Date: Thu, 26 May 2005 14:35:18 +0200
Subject: first release of PyPy
In-Reply-To: <1116880764.260884.286720@g49g2000cwa.googlegroups.com>
References: <mailman.264.1116625088.8733.python-list@python.org>
	<1116629407.638782.145950@g47g2000cwa.googlegroups.com>
	<mailman.9.1116831944.18027.python-list@python.org>
	<d6sn2f$18d$1@news.doit.wisc.edu>
	<mailman.29.1116868886.18027.python-list@python.org>
	<1116880764.260884.286720@g49g2000cwa.googlegroups.com>
Message-ID: <20050526123518.GC14182@solar.trillke.net>

Hi Kay, 

On Mon, May 23, 2005 at 13:39 -0700, Kay Schluehr wrote:
> Does it mean You create an RPython object that runs on top of CPython,
> but is just an RPython facade wrapped around a CPython object? So You
> have four kinds of Pythons:
> 
> RPy  -  translateable into LL code
> APy  -  non-translateable but interpretable by translated RPy
> RPy* -  non-translateable but consistent interface with RPy. Calls
>         APy*
> APy* -  not translateable and not interpreteable by translated RPy
> 
> "Selfhosting" would imply vanishing RPy* and APy*. But the problem
> seems to be that selfhosting must somehow be broken because the system
> needs to interact with OS-dependend librarys. As long as You run the
> system upon CPython the problem does not occur but once You drop it, a
> kind of "extension objectspace" must be created which is translated
> into code with nice interfacing properties. 

You are mostly right but 'extension objectspace' is misleading.  
Object Spaces are only responsible for manipulating Python
application objects. 

To get rid of 'faked' objects we need implementations for IO
access and operating system interactions.  Those can sometimes
even be written in pure python (applevel) as is the case for
a preliminary version of a file object. 

> RPython translations will be sufficient and another ext-objectspace is
> just useless epi-cycling?

Conceptually, we need a good concept to perform foreign
function invocation (FFI) much like ctypes or other approaches do.   
However, concretely, we might at first just write some very
low-level code (even lower level than RPython) to interact
with os-level APIs and weave that into the translation process.  
This is an area we are beginning to explore in more depth currently.  

cheers, 

    holger


From eurleif at ecritters.biz  Mon May 30 09:25:27 2005
From: eurleif at ecritters.biz (Leif K-Brooks)
Date: Mon, 30 May 2005 13:25:27 GMT
Subject: Case Sensitive, Multiline Comments
In-Reply-To: <roy-D01535.22050429052005@reader1.panix.com>
References: <1117137316.140791.210430@g14g2000cwa.googlegroups.com>
	<z5adnQMsOLiL7AffRVn-hQ@comcast.com>
	<roy-D01535.22050429052005@reader1.panix.com>
Message-ID: <bvEme.10243$5I5.829329@newshog.newsread.com>

Roy Smith wrote:
> Just wait until the day you're trying to figure out why some C++ function 
> is behaving the way it is and you don't notice that a 50-line stretch of 
> code is commented out with /* at the top and */ at the bottom.

The same thing's happened to me in Python when I accidentally included a
function's code in its docstring (don't ask me how I managed to do that
-- I don't know). But my editor's syntax highlighting helped me to find
the error very quickly.


From could.net at gmail.com  Mon May 30 10:31:05 2005
From: could.net at gmail.com (could ildg)
Date: Mon, 30 May 2005 22:31:05 +0800
Subject: Is pyunit still usable?
Message-ID: <311b5ce10505300731562d64d4@mail.gmail.com>

I want to know something about unittest these days,
and since I'm learning python, I want to touch it through
python. But when I found the newest pyunit is even so
old, I wonder if it is still usable for current python version
2.4. Will you please tell me? Thank you.

What are the advantages and disadvantages of unittest?
Can somebody give me a detailed listing?


From ptmcg at austin.rr.com  Mon May 23 13:39:46 2005
From: ptmcg at austin.rr.com (Paul McGuire)
Date: 23 May 2005 10:39:46 -0700
Subject: What are OOP's Jargons and Complexities?
In-Reply-To: <1116843761.619249.144790@g47g2000cwa.googlegroups.com>
References: <1116843761.619249.144790@g47g2000cwa.googlegroups.com>
Message-ID: <1116869986.145116.303340@f14g2000cwb.googlegroups.com>

Is this supposed to be some sort of wake-up call or call-to-arms to all
the CS lemmings who have been hoodwinked by Sun into the realm of
jargon over substance?

Please do some informed research and homework before spouting off with
such blather.  Sun Microsystems is hardly The Great Satan of OOP,
trying to foist object-speak on the rest of humanity.  The object
concepts of classes, methods, instances, inheritance, polymorphism,
etc. were already well on their way into the CS consciousness before
Java came on the scene.  To attempt to relate the emergence of object
concepts as starting with Java simply illustrates a lack of historical
awareness.  To omit so obvious a Java precursor as Smalltalk seriously
undermines any authority you may have once had on this topic.

It is easy to attack "terminology" as "jargon," but in fact, precise
definitions of terms help improve communication of complex concepts.
Unfortunately, some of the concepts *are* complex - we just recently on
this forum had someone ask about "polymorphism" when what they really
meant was "overloaded method signatures."  (It is even more unfortunate
that language features such as overloaded method signatures and
operator overloading get equated with OOP, simply because OO language
XYZ supports them.)  I would say that terminology becomes jargon when
it introduces new terms that do not really help describe any new
concepts, but simply raise an arbitrary barrier to new students of the
field.  And *any* complex field's terminology will be perceived as
jargon to those who have not done adequate study - are you about to
begin a parallel crusade to attack the jargon-spewing conspiracy among
quantum physicists, what with their terms of top, down, spin, charm,
muon, meson, lepton, etc.?

Your complaint about Java requiring all code to reside in a class is
not new.  It is a common newbie issue that one has to get past "static
void main(string[] args)" just to do a simple "Hello, World!".  But
this seems to be a minor point for someone as authoritative as yourself
to waste over 1000 words on.  All computing languages have good and bad
features.  Determining whether Java's "classes-only" language design is
"good" or "bad" is something of a point of view - let it go that some
folks find it overly purist and a nuisance, while others like the
uniformity of implementation.

You certainly seem to have a lot of energy and enthusiasm for these
topics.  It would be nice if you could find a way to illuminate and
educate, without falling prey to the urge to pontificate.  If you
really have some points to make, put away the breathless and profane
debate style - it just gets in the way of anything you're trying to
say.  Really, we are *mostly* adults here, and can make up our own
minds on most things.

-- Paul



From p at ulmcnett.com  Wed May 11 13:19:37 2005
From: p at ulmcnett.com (Paul McNett)
Date: Wed, 11 May 2005 10:19:37 -0700
Subject: Solipsis: Python-powered Metaverse
In-Reply-To: <d5tbj0$erb$1@panix1.panix.com>
References: <d5qqo7$3dc$1@sea.gmane.org>	<mailman.323.1115778422.29826.python-list@python.org>	<du7u0lacnam.fsf@mozart.cc.tut.fi>	<mailman.370.1115824344.29826.python-list@python.org>
	<d5tbj0$erb$1@panix1.panix.com>
Message-ID: <42823EA9.4040902@ulmcnett.com>

Aahz wrote:
> In article <mailman.370.1115824344.29826.python-list at python.org>,
> Paul McNett  <p at ulmcnett.com> wrote:
> 
>>[1] Although, some ISP's are taking it upon themselves to drop or reject 
>>port 25 traffic. A wrong but understandable stopgap solution to the 
>>problem of peoples toy machines getting infected by malware - at least 
>>those machines won't be able to send mailbombs anywhere else.
> 
> 
> I've heard of other kinds of port-blocking, too, making it difficult or
> impossible to set up VPNs, for example.

See, they *are* out there, trying to take away my freedom! :) The 
logical extension of this is that cable/dsl providers will only allow 
destinations of port 80 and 25, because those two services are what "the 
Internet" is to 80% of the ISP's customers. Actually, you can scratch 
port 25 because more and more people are using webmail (ick!), but you 
probably need to add 443. So "what the Internet is" becomes set in stone 
instead of what it naturally wants to do: evolve.

-- 
pkm ~ http://paulmcnett.com



From terjej at mailandnews.com  Mon May  2 14:30:31 2005
From: terjej at mailandnews.com (Terje Johan Abrahamsen)
Date: 2 May 2005 11:30:31 -0700
Subject: Mouseclick
Message-ID: <1e140f34.0505021030.9f615dc@posting.google.com>

Hello.

I have been trying desperately for a while to make Python push the
left mousebutton. I have been able to let Python push a button in a
box:

def click(hwnd):
    win32gui.SendMessage(hwnd, win32con.WM_LBUTTONDOWN, 0, 0)
    win32gui.SendMessage(hwnd, win32con.WM_LBUTTONUP, 0, 0)

optDialog = findTopWindow(wantedText="Options")

def findAButtonCalledOK(hwnd, windowText, windowClass):
    return windowClass == "Button" and windowText == "OK"
okButton = findControl(optDialog, findAButtonCalledOK)

click(okButton)

As described here, http://tinyurl.com/cwjls. But, that is not what I
am looking for. I would like to specify some coordinates such as
windll.user32.SetCursorPos(450, 370) and thereafter click the left
mousebutton at that place.

I know that the sollution lies somewhere with Microsoft
(http://www.6URL.com/FED), but cannot understand how to make Python
click the button regardless of how much I try.

Thanks in advance.


From czrpb at yahoo.com  Thu May  5 17:15:19 2005
From: czrpb at yahoo.com (Quentin Crain)
Date: Thu, 5 May 2005 14:15:19 -0700 (PDT)
Subject: Tons of stats/opens to non-existing files increases Python's startup
	on loaded NFS servers
Message-ID: <20050505211519.52192.qmail@web60008.mail.yahoo.com>

Hello All:

I am being told by my systems people that the load on
the NFS servers is nasty. Our python installs are up
on NFS. Also, on a bureaucratic note, I have very
little input/control into the python builds (sigh).

I have found the following (linux):

strace -f -F python2.2.2 -c 'pass' |& fgrep '(No such
file or directory)' | wc -l
 ===> 57

strace -f -F python2.4 -c 'pass' |& fgrep '(No such
file or directory)' | wc -l
 ===> 161

Whoa!! After looking at what is being stat'd or
open'd, it looks like 'encodings' is new in 2.4 and,
even "worse", everything is looked for as a zip first.

Python start-up is significantly slowed when it has to
look for non-existent files on loaded NFS servers, and
becomes particularly costly when using python for cgi.

Is there any documentation I can read to understand
Python's start-up and how I might resolve this? Of
course, any other ideas and comments are welcome!

Respectfully,

  Quentin Crain



		
__________________________________ 
Do you Yahoo!? 
Make Yahoo! your home page 
http://www.yahoo.com/r/hs


From fuzzyman at gmail.com  Tue May 24 04:05:36 2005
From: fuzzyman at gmail.com (Fuzzyman)
Date: 24 May 2005 01:05:36 -0700
Subject: Just remember that Python is sexy
In-Reply-To: <1116899839.323185.58350@g49g2000cwa.googlegroups.com>
References: <1116899839.323185.58350@g49g2000cwa.googlegroups.com>
Message-ID: <1116921936.323903.206580@g44g2000cwa.googlegroups.com>


Scott Kirkwood wrote:
> I often can't remember that to remove spaces from a string whether
it's
> strip() or trim(), and when finding patterns with the re library
> whether it's find() or search() and when iterating over key, values
of
> a dictionary whether it's items() or entries().
> But then I remember that Python is "sexy".
> It is sexier to strip() than to trim().
> You do a strip search() not a find() search.
> And you remove items() of clothing and not entries() of clothing.

Thats very silly.....

Regards,

Fuzzy
http://www.voidspace.org.uk/python



From mrmaple at gmail.com  Thu May  5 09:08:00 2005
From: mrmaple at gmail.com (James Carroll)
Date: Thu, 5 May 2005 09:08:00 -0400
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <d5cvvs$8pn$1@sea.gmane.org>
References: <d4u60o$akh$1@news2.netvision.net.il>
	<1114927892.321086.60190@z14g2000cwz.googlegroups.com>
	<zX%ce.78213$ft1.5056576@phobos.telenet-ops.be>
	<Zj2de.78345$a42.5091422@phobos.telenet-ops.be>
	<8764y29x3m.fsf@uwo.ca> <877jihc7qv.fsf@uwo.ca>
	<4279366B.6070800@zopatista.com>
	<mailman.24.1115246239.29826.python-list@python.org>
	<1115268997.066368.208690@o13g2000cwo.googlegroups.com>
	<d5cvvs$8pn$1@sea.gmane.org>
Message-ID: <b273c7410505050608345970ea@mail.gmail.com>

Och!  Thanks for the hint!  I actually guessed the answer of who to
phone earlier in the day, but didn't have the capitolization
correct...  Damn!  Great riddles!

-Jim


On 5/5/05, Martijn Pieters <mj at zopatista.com> wrote:
> [SNIP me whining then cheering about level 13]
> 
> Dan Bishop wrote:
> > You mean there's a hint in that XML-RPC fault?
> 
> No, there is a hint in level 12. Remember how you could manipulate the
> URL of the image of level 12 to get to the data file for that level. Now
> continue that manipulation and don't believe the suggestion about no
> more evils. *Then* pay close attention to what you find. If you get a
> 'Not Found' you either didn't pay attention in the previous step and
> have passed over the hint, or you searched in the wrong direction.
> 
> Martijn Pieters
> 
> 
> --
> http://mail.python.org/mailman/listinfo/python-list
> 
> 
>


From rkern at ucsd.edu  Thu May 12 22:35:47 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Thu, 12 May 2005 19:35:47 -0700
Subject: OSx 10.4 lacks pythonIDE?
In-Reply-To: <2005051303214075249%baza@NOSPAMthemauvezoneorguk>
References: <2005051303214075249%baza@NOSPAMthemauvezoneorguk>
Message-ID: <d613bf$6pu$1@sea.gmane.org>

baza wrote:
> Where is the IDE in 'Tiger' for the mac? Don't tell me I have to use 
> text edit all the time??

PythonIDE never came with the OS. You have to install it yourself.

http://homepages.cwi.nl/~jack/macpython/

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From roccomoretti at hotpop.com  Mon May 30 11:16:44 2005
From: roccomoretti at hotpop.com (Rocco Moretti)
Date: Mon, 30 May 2005 10:16:44 -0500
Subject: Software licenses and releasing Python programs for review
In-Reply-To: <1117392779.263376.236200@o13g2000cwo.googlegroups.com>
References: <1117245014.218831.317750@g14g2000cwa.googlegroups.com>
	<mailman.216.1117291885.18027.python-list@python.org>
	<1117324124.350474.136600@g14g2000cwa.googlegroups.com>
	<pan.2005.05.29.12.23.39.107067@REMOVETHIScyber.com.au>
	<1117392779.263376.236200@o13g2000cwo.googlegroups.com>
Message-ID: <d7faor$o8p$1@news.doit.wisc.edu>

poisondart wrote:

> With the exception of the example with neighbour Bobby (which directly
> utilizes my code for profit, in which case is a definite no), I don't
> see why your other examples should make me reconsider releasing my
> software for free.

I don't think he's trying to make you reconsider releasing the code for 
free, he just wants you to think about what you want to happen in 
certain scenarios - There are no right or wrong answers, but your 
answers will help you decide what license you want to release your code as.

> You publish a magazine and include a CD with my code--you are using my
> code to attract readers (this, I did not agree to).

Well, depending on what license you use, the agreement may be implicit 
in the license. (e.g. the GPL allows Steven to do this, a Microsoft type 
EULA doesn't)

> The example with colleague Betty does not say whether she has debugged
> my code and sold it for profit. If she does, then she will have done
> something very selfish in my view--also undesirable. 

What's selfish? The fact that she debugged it? The fact that she sold 
it? The fact that she debugged it and didn't give you the corrections? 
Your answer will help you decide what you want in a license.

> If she hasn't debugged my code...what is she doing selling my property?

It depends on how you look at things. She might not be selling your 
software - she's selling a list of bug-free and stable programs, which 
happens to have a copy of your program on the same CD. If you allow free 
redistribution, this is implicit. She's distributing your program for 
free (allowed by your license), but is selling her value added service 
of certifying that the program is bug free.

> I plan to release my programs for academic and pedagogical purposes.
> The knowledge contained in these programs is the same knowledge that
> people use to speak a language--did you buy a copy of the English
> language when you decided to learn it?
> 
> This is why I feel that it would not make sense for me to sell my
> programs for profit.

You have several things going on here:

Although it might not make sense for *you* to sell your program for 
profit, someone else might think it worthwhile. Do you want to disallow 
this, why or why not?

Secondly, you should distinguish between being *required* to purchase 
the program and being *able* to purchase the program. Just because 
Barney is selling a copy of the program doesn't mean other people can't 
download it for free off of your website. They *could* pay for it, but 
they can also get it for free. Using your English language example, no 
one sold me a copy of the English language, but there are a number of 
companies which have sold the "knowledge that people use to speak a 
language" to me in the form of dictionaries, thesauruses, and grammar 
guides over the years. I'm no less free in using the English language, 
but Merriam Webster still can make money by selling it back to me.

 > The competitor Barney--This is exactly what I _don't_ want. What's he
 > doing selling my code?

Last point to consider. Say you make a restrictive license. No 
commercial use. No redistribution. etc. Barney comes along and ignores 
the license - distributes the program, sells it for loads of cash.

What are you willing to do? Send a nasty letter? Barney isn't a nice 
guy. He doesn't care that you've sent him an angry letter. He'll still 
sell your program - he's making loads of money. Are you willing to sue 
him? A license doesn't mean much unless you're willing to back it up in 
court. Are you prepared to spend years and $$$$ to make Barney stop?

If you aren't making money off of it yourself, having a restrictive 
license isn't going to help most hobbyists/academics, for the sole 
reason that they don't want to go the the effort required to enforce it.

If all you want is to make sure that your program is always available 
for free to academics/the general public, just use a lax license (like 
MIT) and provide it for free. So what if someone else charges for it? 
They can always go to you to get it for free.

If you're offended at the thought that someone else might be able to 
make money off of your program, then a certified "Open Source" license 
isn't really going to help - one of the requirements is no bias against 
fields of endeavor - they specifically mention the "no commercial use" 
clause as forbidden. http://www.opensource.org/docs/definition.php

That doesn't stop you from choosing a non-"open source" license if you 
want - just be aware that that license choice may substantially affect 
what the community is willing to give back to you.


From percivall at gmail.com  Mon May 23 16:22:04 2005
From: percivall at gmail.com (Simon Percivall)
Date: 23 May 2005 13:22:04 -0700
Subject: line-by-line output from a subprocess
In-Reply-To: <mailman.27.1116867980.18027.python-list@python.org>
References: <mailman.27.1116867980.18027.python-list@python.org>
Message-ID: <1116879724.884768.180250@f14g2000cwb.googlegroups.com>

Okay, so the reason what you're trying to do doesn't work is that the
readahead buffer used by the file iterator is 8192 bytes, which clearly
might be too much. It also might be because the output from the
application you're running is buffered, so you might have to do
something about that as well.

Anyway, if the output from the child application is unbuffered, writing
a generator like this would work:

def iterread(fobj):
    stdout = fobj.stdout.read(1) # or what you like
    data = ""
    while stdout:
        data += stdout
        while "\n" in data:
            line, data = data.split("\n", 1)
            yield line
        stdout = fobj.stdout.read(1)
    if data:
        yield data,



From Sylvain.Thenault at logilab.fr  Fri May 27 06:59:26 2005
From: Sylvain.Thenault at logilab.fr (Sylvain =?iso-8859-1?Q?Th=E9nault?=)
Date: Fri, 27 May 2005 12:59:26 +0200
Subject: [ANN] pylint 0.7
Message-ID: <20050527105926.GC4750@logilab.fr>

Hello all !

I'm pleased to announce a new release of PyLint. I've been promising a
1.0 release some time ago, but it appears I've not enough time yet to
do the polishing I wish, and since the latest (0.6.4) release has a
few really annoying bugs (mainly related to options handling), I
eventually decided to make this intermediate release. It mainly
targets bug fixes but as the main pylint package has moved (it's not
anymore a logilab'subpackage), I've made a 0.7 instead of a
0.6.5. Some others fixes and minor enhancements are included (see
below for a more detailed list), and this release should be really
stable. Please send any bugs or comments on the mailing list.


What's new ?
------------
* WARNING: pylint is no longer a logilab subpackage. Users may have to
  manually remove the old logilab/pylint directory.

* this time, real fix of the "disable-msg in the config file" problem,
  test added to unittest_lint

* fix a bug in the variables checker which may causing some false
  positives when variables are defined and used within the same
  statement (test func_noerror_defined_and_used_on_same_line)

* fix bug with --list-messages and python -OO

* fix possible false positive for W0201
	
* introduce a new --additional-builtins option to handle user defined
  builtins 

* --reports option has now -r as short alias, and -i for --include-ids
	

What is pylint ?
----------------

Pylint is a python tool that checks if a module satisfy a coding
standard. Pylint can be seen as another pychecker since nearly all
tests you can do with pychecker can also be done with Pylint. But
Pylint offers some more features, like checking line-code's length,
checking if variable names are well-formed according to your coding
standard, or checking if declared interfaces are truly implemented,
and much more (see http://www.logilab.org/projects/pylint/ for the
complete check list). The big advantage with Pylint is that it is
highly configurable, customizable, and you can easily write a small
plugin to add a personal feature.

The usage it quite simple :

$ pylint mypackage.mymodule
        

This command will output all the errors and warnings related to the
tested code (here : mypackage.mymodule), will dump a little summary at
the end, and will give a mark to the tested code.

Pylint is free software distributed under the GNU Public Licence.


Home page
---------
http://www.logilab.org/projects/pylint

Download
--------
ftp://ftp.logilab.org/pub/pylint

Mailing list
------------
mailto://python-projects at logilab.org

Enjoy !
-- 
Sylvain Th?nault                               LOGILAB, Paris (France).

http://www.logilab.com   http://www.logilab.fr  http://www.logilab.org



From Holzmayer.Bernhard at deadspam.com  Tue May 17 03:30:58 2005
From: Holzmayer.Bernhard at deadspam.com (Bernhard Holzmayer)
Date: Tue, 17 May 2005 09:30:58 +0200
Subject: Windows distribution suggestions?
References: <7x3bsmfjdg.fsf_-_@ruckus.brouhaha.com>
Message-ID: <d6c6e6$mlf$1@news01.versatel.de>

Paul Rubin wrote:

> As what must be penance for something or other, I'm needing to release
> a Python app for use under Windows XP.  Please be gentle with me since
> I'm a Un*x weenie and the only thing I've had much practice with under
> Windows is rebooting it.

I can feel your unhappiness, and I share it. Hi Paul!
Here are some hints...

> My app contains three different programs (say alice.py, bob.py, and
> carol.py) that need to be independently launchable, and a dozen or so
> other .py files that get imported into those first three.  What I'd
> really really like is to make a single installer called (say)
> "app.exe".  Launching app.exe should completely install Python, unpack
> all the necessary modules, and make three icons (alice, bob, carol) on
> the desktop.

Since your installer needs to run before Python is installed, you need
something else. Go to http://www.wisesolutions.com
You'll find a Windows installer program, with a demo-version (30days
license). Try this, it would be my best recommendation.
> 
> I know there's various ways of building Windows distros like that, but
> am not sure what's currently preferred.  Gordon McMillan's site
> www.mcmillan-inc.com has had its domain expire (he really should renew
> it before some squatter grabs it!) and the mirror that I've found
> indicates that it was last updated for Python 2.3.  I wrote my app
> under 2.4 and while I don't think I depend heavily on any 2.4
> features, I'd rather not have to downgrade just to make this exe
> installer.  

You'll have to test your application on Windows, in any case. 
I've built lots of applications which run in both worlds (Linux/Windows).
Usually this works, but occasionally you'll have to deal with strange
things. One is, if you use ODBC. There's good chance that you'll have to
deal with access restrictions in the %SYSTEM% directory, unless you require
an administrator's account for your application.

If you test your app on a Windows machine, you can easily install Python 2.3
and Python 2.4 on the same machine without conflicts. Just try out, if your
app works with either. If it works with both, why not use 2.3?


> There's also py2exe--is that as good? 
Depends on your application, if that is acceptable. 
I have no experiences with that.
> 
> Also, what's the preferred way of releasing updates?  That is, let's
> say I want to update my .py files and release a new version fairly
> frequently--should I just make a new .exe every time?   

Providing an installation program called Setup.exe or Install.exe which does
everything (guided by a sequence of dialog boxes where the user presses
only the return key to get through the successful installation), is
state-of-the-art. Usually, one of the Wise or InstallShield installers, are
used. Or simple WinZip-Packages.

> Would launching the new one cleanly overwrite or uninstall the old one? 

If you've done it in the proper way with the proper tool, yes.

> Total coolness would be a way to ship an "update.py" along with the app,
> that syncs the app up to a Subversion repository, but that may be
> asking a bit much.

Who are your customer's (the recipients of your program releases)?
Usually, you cannot rely that they have online access to your repository.
Then, they are potentionally interested in security issues and/or stability
of the program. I'd not like a program which is said to require frequent
updates - I'd guess that there's not much quality inside...

If your application has a GUI, a menu entry might fetch your update files
and place them wherever they must reside. your update.py might feed that
menu entry. Quite easy. 
If you have command line apps, why not provide an additional update.py 
and then, if you provide updates, just install them using your installed
update.py. The only thing: How do you keep track of path/desktop/file
information and how do you deal with user rights etc.?
Are you aware of how this is done under WindowsXP? It's quite different from
older Windows platforms! Therefore it might be easier, to leave this to
professional installation tools.

> 
> I do have Visual C++ installed on the development machine, if that helps.

Isn't Visual C++ still coming with a restricted version of InstallShield?
If so, check if you can use that. It might give your release a sort of
professional shine...

You'll certainly find out, that managing the registry/desktop file system
will cost most energy, if you want to release your apps to WindowsXP.
Once Python is running your apps, the rest is peanuts.

Bernhard


From bplumhoff at t-online.de  Wed May 18 11:53:47 2005
From: bplumhoff at t-online.de (bplumhoff at t-online.de)
Date: 18 May 2005 08:53:47 -0700
Subject: Is Python suitable for a huge, enterprise size app?
In-Reply-To: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>
Message-ID: <1116431627.594598.99420@g14g2000cwa.googlegroups.com>

The answer seems to be yes. See http://www.artima.com/intv/speed.html

HTH,
Bernd



From http  Thu May 26 22:19:59 2005
From: http (Paul Rubin)
Date: 26 May 2005 19:19:59 -0700
Subject: What are OOP's Jargons and Complexities?
References: <1116843761.619249.144790@g47g2000cwa.googlegroups.com>
	<bAske.14563$yx.14338@fe08.lga> <3584469.Aerji1NdQr@yahoo.com>
	<3cWdnbtAM6aZ6g_fRVn-2w@rcn.net>
	<878y24yhst.fsf@ivanova.rotty.yi.org>
	<3fh93fF7set5U1@news.dfncis.de> <9tKdnT-wKq24Uw7fRVn-pA@rcn.net>
	<7vWke.2017$W51.14781@typhoon.sonic.net>
	<1117158478.701216.130110@f14g2000cwb.googlegroups.com>
	<roy-D0C1B4.22134026052005@reader1.panix.com>
Message-ID: <7x64x5mmuo.fsf@ruckus.brouhaha.com>

Roy Smith <roy at panix.com> writes:
> I used to have a bunch of comp sci questions I would ask interview victims.  
> One of them was "what does it mean when a language is strongly typed?"  I 
> once had somebody tell me it meant the language had long variable names, 
> and thus took a lot of typing.

But that's incorrect.  Strong typing means there's a lot of variables
whose names are in ALL CAPS.


From simon.dahlbacka at gmail.com  Thu May 19 04:44:21 2005
From: simon.dahlbacka at gmail.com (simon.dahlbacka at gmail.com)
Date: 19 May 2005 01:44:21 -0700
Subject: logging problems
In-Reply-To: <mailman.174.1116454957.8733.python-list@python.org>
References: <loom.20050428T142438-258@post.gmane.org>
	<mailman.34.1114796788.14961.python-list@python.org>
	<1116334261.953335.307340@g14g2000cwa.googlegroups.com>
	<mailman.174.1116454957.8733.python-list@python.org>
Message-ID: <1116492261.083024.301960@g47g2000cwa.googlegroups.com>

I thought I did, but when I checked today it seems I've screwed up and
edited logging/__init__.py in 2.4 and tested with 2.3

So after fixing it in the correct place, it works nicely..



From ivoras at fer.hr  Tue May 17 07:03:29 2005
From: ivoras at fer.hr (Ivan Voras)
Date: Tue, 17 May 2005 13:03:29 +0200
Subject: Windows distribution suggestions?
In-Reply-To: <7x8y2ep1cw.fsf@ruckus.brouhaha.com>
References: <7x3bsmfjdg.fsf_-_@ruckus.brouhaha.com>
	<7xekc6p9tp.fsf@ruckus.brouhaha.com>
	<4289ACD8.2070207@open-networks.net>
	<mailman.87.1116322349.8733.python-list@python.org>
	<7x8y2ep1cw.fsf@ruckus.brouhaha.com>
Message-ID: <d6cj3e$19r$1@bagan.srce.hr>

Paul Rubin wrote:

>>your active code is then in some library.zip shared between the
>>three, and you need never change alice.exe, bob.exe, and carol.exe
> 
> I think I understand what you're saying and it sounds like a very
> good idea.  Thanks.

One thing about updating files - sorry if I'm stating general and 
universal knowledge, but beware that on Windows you can't delete and/or 
replace a file if it's opened by any process.


From vincent at visualtrans.de  Wed May 18 15:15:46 2005
From: vincent at visualtrans.de (vincent wehren)
Date: Wed, 18 May 2005 21:15:46 +0200
Subject: iso_8859_1 mystery/tkinter
References: <mailman.154.1116432329.8733.python-list@python.org>
	<mailman.158.1116437716.8733.python-list@python.org>
Message-ID: <d6g499$d5s$2@news4.zwoll1.ov.home.nl>


""Martin v. L?wis"" <martin at v.loewis.de> schrieb im Newsbeitrag 
news:mailman.158.1116437716.8733.python-list at python.org...
| phil wrote:
| > These work fine on Linux
| >         s.const = {}
| >         s.const['DEG'] = '%c' % (0xb0)
| >         s.const['DIV'] = '%c' % (0xf7)
| >         s.const['ANG'] = '%c' % (0xd8)
| >
| > On WinXP the symbols for division and angle work fine.
| > But the symbol for degrees, a little circle, produces
| > a vertical bar in Tkinter Text box or Canvas.
|
| I don't understand what you mean by that. Do you have
| the symbol for degrees in your source code (so that
| the editor for the source code displays it as a little
| circle)? Or do you use the numeric code?
|
| Can you show a small program that demonstrates this
| effect?

OP probably means something like:

import Tkinter
root = Tkinter.Tk()
t = Tkinter.Text()
t.pack()
t.insert(0.0, '%c' % 0xb0)
root.mainloop()

which shows a vertical bar in the Text widget.

Changing:

t.insert(0.0, '%c' % 0xb0)

to

t.insert(0.0, u'%c' % 0xb0)


should do the trick though.

--

Regards,

Vincent Wehren

|
| Regards,
| Martin
| 




From could.net at gmail.com  Thu May 19 02:16:48 2005
From: could.net at gmail.com (could ildg)
Date: Thu, 19 May 2005 14:16:48 +0800
Subject: What's the use of changing func_name?
In-Reply-To: <d6ha7v$kh9$1@sea.gmane.org>
References: <311b5ce105051822477c09c81@mail.gmail.com>
	<d6ha7v$kh9$1@sea.gmane.org>
Message-ID: <311b5ce1050518231650b3b53e@mail.gmail.com>

Thank you for your help.
I know the function g is changed after setting the func_name.
But I still can't call funciton g by using f(), when I try to do
this, error will occur:
<code>
>>> g.func_name="f"
>>> print g
<function f at 0x00B2CEB0>
>>> f()
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
NameError: name 'f' is not defined
</code>
Since the name of g is changed into f, why can't I call it by using f()?
Should I call it using f through other ways? Please tell me. Thanks~


On 5/19/05, Robert Kern <rkern at ucsd.edu> wrote:
> could ildg wrote:
> > def a(func):
> >     def _inner(*args, **kwds):
> >         print "decorating..."
> >         return func(*args, **kwds)
> >     _inner.func_name = func.func_name -->when I delete this line, the
> > rusult is the same. why?
> >     return _inner
> >
> > @a
> > def g(*args):
> >     for x in args:
> >         print x
> >     print "this is in function g"
> >
> > g(1,2,3,4,5)
> >
> > func_name is writable in python 2.4. I wonder what's the use of
> > writing it. Consider the code above, to change the func_name or not
> > will get the completely same result. The result is as
> > below:
> >
> > decorating...
> > 1
> > 2
> > 3
> > 4
> > 5
> > this is in function g
> >
> > Please tell me how does this happen, thank you~
> 
> Well, the function you posted certainly doesn't change the literal
> string you have inside when you change its func_name. However, the
> function object *does* change.
> 
> In [1]:def g(x):
>     ...:    pass
>     ...:
> 
> In [2]:g
> Out[2]:<function g at 0x5aedf0>
> 
> In [3]:g.func_name = 'f'
> 
> In [4]:g
> Out[4]:<function f at 0x5aedf0>
> 
> --
> Robert Kern
> rkern at ucsd.edu
> 
> "In the fields of hell where the grass grows high
>   Are the graves of dreams allowed to die."
>    -- Richard Harter
> 
> --
> http://mail.python.org/mailman/listinfo/python-list
>


From news2 at mystrobl.de  Sat May 28 13:06:06 2005
From: news2 at mystrobl.de (Wolfgang Strobl)
Date: Sat, 28 May 2005 19:06:06 +0200
Subject: Determine if windows drive letter is hard drive or optical from
	python?
References: <1117219586.001829.74220@g49g2000cwa.googlegroups.com>
Message-ID: <p49h915n6ikpnsemd8s5s3gj76rvprvbv6@4ax.com>

"mh" <sesquile at gmail.com>:

>2. More importantly for those drives that exist, how do I determine if
>it is actually a harddrive?

C:\>python
Python 2.3.4 (#53, May 25 2004, 21:17:02) [MSC v.1200 32 bit (Intel)] on
win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import win32file,string
>>> def harddisks():
...     driveletters=[]
...     for drive in string.letters[len(string.letters)/2:]:
...         if win32file.GetDriveType(drive+":")==win32file.DRIVE_FIXED:
...             driveletters.append(drive+":")
...     return driveletters
...
>>> harddisks()
['C:', 'F:']

-- 
Thank you for observing all safety precautions


From sakesun at boonthavorn.com  Tue May 10 06:21:11 2005
From: sakesun at boonthavorn.com (Sakesun Roykiattisak)
Date: Tue, 10 May 2005 17:21:11 +0700
Subject: A Module on Time & Date
In-Reply-To: <20050510093620.35902.qmail@web61108.mail.yahoo.com>
References: <20050510093620.35902.qmail@web61108.mail.yahoo.com>
Message-ID: <42808B17.4030208@boonthavorn.com>

import datetime
print datetime.datetime.now()

Sara Khalatbari wrote:

>Is there a Module in Python that gives you the time &
>date of today???
>
>
>
>		
>__________________________________ 
>Do you Yahoo!? 
>Make Yahoo! your home page 
>http://www.yahoo.com/r/hs
>  
>



From fredrik at pythonware.com  Fri May 13 13:01:51 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Fri, 13 May 2005 19:01:51 +0200
Subject: create words of various lengths
References: <1116002403.374232.210220@g49g2000cwa.googlegroups.com>
Message-ID: <d62m37$uqi$1@sea.gmane.org>

superprad at gmail.com wrote:

> what I am looking for is
>
> 1. To create a list of different words of various lengths(1-15) using
> A-Z,a-z,0-9 and punctuations.Basically anything that could be found on
> a text document.
>
> 2. The words formed need not be meaningful .FOr example 'ajf' or
> 'fcjgdtfhbs' or even 'gfdew!' or '#bang.' would be a valid entry in the
> list.
>
> 3.So I am looking for a random set of words of sizes 1 to 15.The proble
> might be the time complexity. I inderstand that there would be too many
> permutations.

how many words do you need?  the following bruce-force solution
doesn't take that long to run on my machine, and the resulting words
are guaranteed to be almost entirely meaningless ;-)

    import string
    from random import choice, randint, shuffle

    alphabet = string.letters + string.digits + "%&!?#"

    words = {}

    while len(words) < 10000:
        words["".join(choice(alphabet) for i in range(randint(1,15)))] = None

    words = words.keys()
    shuffle(words)

to generate text from this, reshuffle the word list after you've written
a number of words.  (or you could slice off a random number of words
and run the loop again, at random intervals.  or something.)

the character and word distribution will have no similaries with real text,
of course, but maybe that doesn't matter.

</F>





From danb_83 at yahoo.com  Thu May  5 09:40:31 2005
From: danb_83 at yahoo.com (Dan Bishop)
Date: 5 May 2005 06:40:31 -0700
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <mailman.44.1115298483.29826.python-list@python.org>
References: <d4u60o$akh$1@news2.netvision.net.il>
	<1114927892.321086.60190@z14g2000cwz.googlegroups.com>
	<zX%ce.78213$ft1.5056576@phobos.telenet-ops.be>
	<Zj2de.78345$a42.5091422@phobos.telenet-ops.be>
	<8764y29x3m.fsf@uwo.ca> <877jihc7qv.fsf@uwo.ca>
	<4279366B.6070800@zopatista.com>
	<mailman.24.1115246239.29826.python-list@python.org>
	<1115268997.066368.208690@o13g2000cwo.googlegroups.com>
	<d5cvvs$8pn$1@sea.gmane.org>
	<mailman.44.1115298483.29826.python-list@python.org>
Message-ID: <1115300431.646016.179430@z14g2000cwz.googlegroups.com>

James Carroll wrote:
> Och!  Thanks for the hint!  I actually guessed the answer of who to
> phone earlier in the day, but didn't have the capitolization
> correct...  Damn!  Great riddles!

I found the answer with a brute-force search (using
/usr/share/dict/words).



From bokr at oz.net  Mon May  2 18:30:55 2005
From: bokr at oz.net (Bengt Richter)
Date: Mon, 02 May 2005 22:30:55 GMT
Subject: WordPress Python Library 1.0
References: <Rmwde.850131$b5.37722456@news3.tin.it>
	<mailman.49.1115067917.6583.python-list@python.org>
	<VKwde.1322130$35.49403624@news4.tin.it>
Message-ID: <4276a972.508897235@news.oz.net>

On Mon, 02 May 2005 21:14:29 GMT, Michele Ferretti <black.bird at NOSPAMtiscali.it> wrote:

>Fran?ois Pinard wrote:
>> [Michele Ferretti]
>> 
>>>http://www.blackbirdblog.it/programmazione/progetti/28
>> 
>> 
>> Quoted above, the full content of your article.  Is it a message?  It
>> surely does not look like an English sentence.
>> 
>> Should we start a browser each time we see an URL?  Many of us are not
>> in such an Internet starvation.  If you want to raise our appetite,
>> maybe a few words of introduction or explanation would be welcome. :-)
>> 
>
>ok, sorry, but subject is very explicit!
>
Should we expect your "WordPress Python Library 1.0" to do to words
what the dry cleaners do to suits and shirts then? ;-)

Regards,
Bengt Richter


From rolf.wester at ilt.fraunhofer.de  Mon May 30 06:28:15 2005
From: rolf.wester at ilt.fraunhofer.de (Rolf Wester)
Date: Mon, 30 May 2005 12:28:15 +0200
Subject: plotting with Python
Message-ID: <429aeac6$1@news.fhg.de>

Hi,

I have a Python console application that is intended to be used 
interactively and I have to add plotting capabilities (multiple XY plots 
and if possible 2D-surface plots). I'm loocking for a reasonably fast 
plotting library (not GPL'ed, needs not be for free) that can be used 
under Windows. An alternative would also be a standalone application 
that can be controlled via TCP/IP from my Python application. I tried 
matplotlib but this is not fast enough (especially under Windows). I 
considered PyQwt but this is GPL'ed. So I would be very appreciative for 
any help.

With kind regards

Rolf Wester


From steven.bethard at gmail.com  Thu May 19 16:43:30 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Thu, 19 May 2005 14:43:30 -0600
Subject: Convert from numbers to letters
In-Reply-To: <1116535087.901874.167870@g43g2000cwa.googlegroups.com>
References: <1116511005.900715.107260@o13g2000cwo.googlegroups.com>
	<1116519193.037429.93560@o13g2000cwo.googlegroups.com>
	<1116529140.470352.129690@z14g2000cwz.googlegroups.com>
	<mailman.224.1116530388.8733.python-list@python.org>
	<1116535087.901874.167870@g43g2000cwa.googlegroups.com>
Message-ID: <fbudne5spe3oZxHfRVn-jg@comcast.com>

Jason Drew wrote:
> z = lambda cp: (int(cp[min([i for \
>     i in xrange(0, len(cp)) if \
>     cp[i].isdigit()]):])-1,
>     sum(((ord(cp[0:min([i for i in \
>     xrange(0, len(cp)) if \
>     cp[i].isdigit()])][x])-ord('A')+1) \
>     * (26 ** (len(cp[0:min([i for i in \
>     xrange(0, len(cp)) if \
>     cp[i].isdigit()])])-x-1)) for x in \
>     xrange(0, len(cp[0:min([i for i in \
>     xrange(0, len(cp)) if \
>     cp[i].isdigit()])]))))-1)

While I think we can all agree that this is a sin against man and nature 
;) I'll ignore that for the moment to note that you don't need any of 
the '\' characters.  You're already using parentheses and brackets.  I 
find there are *very* few cases where I really need a line-continuation 
character.

STeVe


From mauriceling at acm.org  Fri May  6 21:08:31 2005
From: mauriceling at acm.org (Maurice LING)
Date: Sat, 07 May 2005 11:08:31 +1000
Subject: hard memory limits
References: <d5f9jl$k6d$1@domitilla.aioe.org>	<mailman.88.1115374567.29826.python-list@python.org>	<d5gphu$hij$1@domitilla.aioe.org>
	<mailman.115.1115419109.29826.python-list@python.org>
Message-ID: <d5h4eb$g5v$1@domitilla.aioe.org>

James Stroud wrote:

> Sorry Maurice, apparently in bash its "ulimit" (no n). I don't use bash, so I 
> don't know all of the differences offhand. Try that.
> 
> James

Thanks guys,

It doesn't seems to help. I'm thinking that it might be a SOAPpy 
problem. The allocation fails when I grab a list of more than 150k 
elements through SOAP but allocating a 1 million element list is fine in 
python.

Now I have a performance problem...

Say I have 3 lists (20K elements, 1G elements, and 0 elements), call 
them 'a', 'b', and 'c'. I want to filter all that is in 'b' but not in 
'a' into 'c'...

 >>> a = range(1, 100000, 5)
 >>> b = range(0, 1000000)
 >>> c = []
 >>> for i in b:
...     if i not in a: c.append(i)
...

This takes forever to complete. Is there anyway to optimize this?

Thanks in advance

Cheers
Maurice


From philippe at philippecmartin.com  Tue May  3 21:42:16 2005
From: philippe at philippecmartin.com (Philippe C. Martin)
Date: Wed, 04 May 2005 01:42:16 GMT
Subject: Pydev Refactoring Feature in Eclipse
References: <1115137151.978023.29890@z14g2000cwz.googlegroups.com>
Message-ID: <YLVde.2051$Vz4.1062@newssvr11.news.prodigy.com>

Hi,

I am using Eclipse 3.0.2 with Pydev 0.9.3 under Mandrake 10.1 and it works
OK.


Is 3.1M3 stable?, I see their latest milestone/stable is 3.1M6 - might want
to upgrade.


Regards,

Philippe



querejeto wrote:

> Folks:
> 
> I cannot get a refactoring menu to show up on my Eclipse (3.1M3,
> Windows XP). F3 works, I can run and debug scripts. Can't refactor,
> though.
> 
> Any idea what I could be missing on my installation?
> 
> Thanks:
> 
> Querejeto



From tim.golden at viacom-outdoor.co.uk  Mon May  9 03:55:37 2005
From: tim.golden at viacom-outdoor.co.uk (Tim Golden)
Date: Mon, 9 May 2005 08:55:37 +0100
Subject: Active Directory Modules?
Message-ID: <9A28C052FF32734DACB0A288A3533991EBB7D8@vogbs009.gb.vo.local>

[Harlin Seritt]

| Does anyone know if there are any Python Active Directory Modules out
| there? I looked at LDAP module but there is no version for Python 2.4
| and it's support for Active Directory seems to be lacking a bit.

Far from perfect, but functional. Uses pywin32.

http://tgolden.sc.sabren.com/python/active_directory.html

(and also about the fifth link on Google for 
python active directory, by the way).

TJG

________________________________________________________________________
This e-mail has been scanned for all viruses by Star. The
service is powered by MessageLabs. For more information on a proactive
anti-virus service working around the clock, around the globe, visit:
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From rschroev_nospam_ml at fastmail.fm  Mon May  2 07:54:35 2005
From: rschroev_nospam_ml at fastmail.fm (Roel Schroeven)
Date: Mon, 02 May 2005 11:54:35 GMT
Subject: Using wildcards...
In-Reply-To: <1115031662.593097.172810@z14g2000cwz.googlegroups.com>
References: <1115031662.593097.172810@z14g2000cwz.googlegroups.com>
Message-ID: <%xode.79193$qV2.4519022@phobos.telenet-ops.be>

Harlin Seritt wrote:

> I looked all over the net but could not find if it is possible to
> insert wildcards into strings. What I am trying to do is this: I am
> trying to parse text from a Bible file. In case you're not familiar
> with the way the Bible organizes itself, it is broken down into Books >
> Chapters > Verses. The particular text I am working with are organized
> into Book files (*.txt -- flat text file). Here is what the file looks
> like:
> 
> {1:1} Random text here. {1:2} More text here. and so on.
> 
> Of course the {*} can be of any length, so I can't just do .split()
> based on the length of the bracket text. What I would like to do is to
> .split() using something akin to this:
> 
> textdata.split('{*}') # The '*' being a wildcard
> 
> Is this possible to do? If so, how is it done?

You can use the split function in the re module with a suitable regular 
expression:

  >>> re.split('{\d+:\d+}', textdata)
['', ' Random text here. ', ' More text here. and so on.']

{\d+:\d+} means 'match {, then one or more digits, then :, then one or 
more digits, then }'.

re.split('{.*}', textdata) would be a more direct translation of your 
wildcard, but that doesn't work: .* matches as much as possible, so in 
your example it would match '{1:1} Random text here. {1:2}' instead of 
just '{1:1}' and '{1:2}'.

-- 
If I have been able to see further, it was only because I stood
on the shoulders of giants.  -- Isaac Newton

Roel Schroeven


From duncan.booth at invalid.invalid  Thu May 19 04:46:21 2005
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 19 May 2005 08:46:21 GMT
Subject: self-promotion of the decorator module
References: <1116484694.122678.11980@f14g2000cwb.googlegroups.com>
Message-ID: <Xns965B6367B75F0duncanbooth@127.0.0.1>

Michele Simionato wrote:

> with the following advantages:
> 
> 1. one-level of nesting is saved ("flat is better than nested")
> 2. name, docstring and dictionary of the original function are
>     preserved;
> 3. the signature of the original function is preserved (this one is
> nontrivial).
> 

And at least the following bugs:

>>> from decorator import *
>>> @decorator
def chatty(f, *args, **kw):
	print "Calling %r" % f.__name__
	return f(*args, **kw)

>>> @chatty
def f((x,y)): pass


Traceback (most recent call last):
  File "<pyshell#11>", line 1, in -toplevel-
    @chatty
  File "C:\Work\decorator\decorator.py", line 119, in __call__
    return _decorate(func, self.caller)
  File "C:\Work\decorator\decorator.py", line 89, in _decorate
    dec_func = eval(lambda_src, evaldict)
  File "<string>", line 1
    lambda ['x', 'y']: call(func, ['x', 'y'])
           ^
SyntaxError: invalid syntax
>>> 

I would have thought the code would be simpler if it used 
inspect.formatargspec to produce an argument list which is correctly 
formatted for all the weird corner cases:

>>> class Default:
	def __init__(self, n):
		self.n = n
	def __repr__(self):
		return 'defarg[%d]' % self.n

	
>>> def f(x, y=1, z=2, *args, **kw): pass

>>> a,v,vk,d = inspect.getargspec(f)
>>> inspect.formatargspec(a,v,vk,map(Default, range(len(d))))
'(x, y=defarg[0], z=defarg[1], *args, **kw)'
>>> def g(x, (y,z)=(1,2), *args, **kw): pass

>>> a,v,vk,d = inspect.getargspec(g)
>>> inspect.formatargspec(a,v,vk,map(Default, range(len(d))))
'(x, (y, z)=defarg[0], *args, **kw)'
>>> d
((1, 2),)
>>> 

Even if we manage to decorate the function, the decorated object has the 
wrong name in tracebacks:

>>> @chatty
def f(): pass

>>> f(3)

Traceback (most recent call last):
  File "<pyshell#15>", line 1, in -toplevel-
    f(3)
TypeError: <lambda>() takes no arguments (1 given)
>>> 

Using a lambda function here seems needlessly perverse. You know the name 
of the function you want to define and you are going to eval a string, so 
why not exec the string instead

    "def %(name)s %(fullsign)s: call(func, %(shortsign)s)" % getinfo(func)

and then just pick the function out of the namespace after the exec?

e.g.

def _decorate(func, caller):
    """Takes a function and a caller and returns the function
    decorated with that caller. The decorated function is obtained
    by evaluating a lambda function with the correct signature.
    """
    lambda_src = "def %(name)s(%(fullsign)s): call(func, %(shortsign)s)" % 
getinfo(func)
    # print lambda_src # for debugging
    execdict = dict(func=func, call=caller, defarg=func.func_defaults or 
())
    exec lambda_src in execdict
    dec_func = execdict.get(func.__name__)
    dec_func.__doc__ = func.__doc__
    dec_func.__dict__ = func.__dict__
    return dec_func

There is still a problem with this one though. If the function has 
arguments named 'call', 'func', or 'defarg' (or for that matter my 
code above introduces a new problem if the function is called by one 
of those names) nasty things will happen. Fortunately you have a list of 
argument names readily available so it shouldn't be too hard to generate 
unique names to use in their place.


From http  Thu May 12 14:53:13 2005
From: http (Paul Rubin)
Date: 12 May 2005 11:53:13 -0700
Subject: Python Documentation (vs PHP stuff)
References: <d5tjng$kae$1@sea.gmane.org>
	<mailman.390.1115838298.29826.python-list@python.org>
	<d5to4d$895$1@solaris.cc.vt.edu> <d5tqi2$d8l$2@sea.gmane.org>
	<mailman.420.1115863774.29826.python-list@python.org>
	<0dEge.88616$nT4.5317732@phobos.telenet-ops.be>
Message-ID: <7xwtq48eee.fsf@ruckus.brouhaha.com>

Roel Schroeven <rschroev_nospam_ml at fastmail.fm> writes:
> In my experience, the user comments in many cases are almost useless.
> Sometimes just confusing, sometimes contradicting each other, sometimes
> even incorrect. Sometimes correct and useful too, but IMO that gets
> drown between all the others.

One thing they are useful for is identifying the places where the
official documentation is deficient.  Even if the user comments are
wrong, it shows the user was having a problem with what was supplied.
I think Python's docs could benefit a lot from that.  There are
parts of the Python docs that are hopelessly incomplete or confusing.


From bill.mill at gmail.com  Fri May  6 10:34:42 2005
From: bill.mill at gmail.com (Bill Mill)
Date: Fri, 6 May 2005 10:34:42 -0400
Subject: hard memory limits
In-Reply-To: <86vf5w5tkz.fsf@guru.mired.org>
References: <d5f9jl$k6d$1@domitilla.aioe.org>
	<mailman.88.1115374567.29826.python-list@python.org>
	<86vf5w5tkz.fsf@guru.mired.org>
Message-ID: <797fe3d405050607341ae01c27@mail.gmail.com>

On 5/6/05, Mike Meyer <mwm at mired.org> wrote:
> "Fredrik Lundh" <fredrik at pythonware.com> writes:
> 
> > Maurice LING wrote:
> >> Will adding more RAM helps in this case?
> >
> > probably.  more swap space might also help.  or you could use a
> > smarter malloc package.  posting more details on your platform,
> > toolchain, python version, and list building approach might also
> > help.
> 
> Without platform information, it's hard to say. On a modern Unix
> system, you only run into system resource limits when the system is
> heavily loaded. Otherwise, you're going to hit per-process limits. In
> the latter case, adding RAM or swap won't help at all. Raising the
> per-process limits is the solution.
> 

A quick google shows it to be mac os X, and a pretty frequent error message.

http://www.google.com/search?hl=en&q=%22vm_allocate%20(size%20%3D%22&btnG=Google+Search

Peace
Bill Mill
bill.mill at gmail.com

>             <mike
> --
> Mike Meyer <mwm at mired.org>                      http://www.mired.org/home/mwm/
> Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.
> --
> http://mail.python.org/mailman/listinfo/python-list
>


From steve at REMOVETHIScyber.com.au  Sun May 22 04:01:38 2005
From: steve at REMOVETHIScyber.com.au (Steven D'Aprano)
Date: Sun, 22 May 2005 18:01:38 +1000
Subject: Self-modifying Code
References: <1116522647.227661.99290@g43g2000cwa.googlegroups.com>
	<428cedeb$0$25015$8fcfb975@news.wanadoo.fr>
Message-ID: <pan.2005.05.22.08.01.37.760790@REMOVETHIScyber.com.au>

On Thu, 19 May 2005 21:49:46 +0200, Do Re Mi chel La Si Do wrote:

> Hi, you, also !
> 
> A view, with a little difference :
> 
> 
> def titi(par):
>     if par>222:
>         return par*2
>     else:
>         return par*10
> 
> print titi(123)
> print titi(1234)
> 
> #now, change the function, "on instant"
> txt="""def titi(par):
>     if par>222:
>         return str(par)*2
>     else:
>         return str(par)*5
> """
> exec(txt,globals(),globals())
> 
> print titi(123)
> print titi(1234)


Self-modifying code is almost always a TERRIBLE idea. Using exec is
dangerous unless you can control what is being executed. Using exec on
code a user supplies is a huge security hole. 

Self-modifying code is one of those ideas that seems cute when you first
learn about it, but in practice is a bad idea. It makes debugging your
code much more difficult. It makes comprehending how your code works
harder. Generally, you should avoid it, and shun code that modifies itself.

Having said that, here is a good example of self-modifying code:

http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/68429

The RingBuffer class dynamically modifies itself once it is full so that
its behaviour changes.


-- 
Steven 





From prabapython at yahoo.co.in  Mon May  9 06:50:35 2005
From: prabapython at yahoo.co.in (praba kar)
Date: Mon, 9 May 2005 11:50:35 +0100 (BST)
Subject: regarding try/except usa
In-Reply-To: 6667
Message-ID: <20050509105035.20564.qmail@web8410.mail.in.yahoo.com>

Dear All,

       Is there any rules and regulations to use
try/except in python?  Can any one explain to me when
I need to use try/except and when we I need not use
try/except?.  This Question mainly for to maintain
code integrity in my project.  But I know
how to use try/except

regards
Praba
 

________________________________________________________________________
Yahoo! India Matrimony: Find your life partner online
Go to: http://yahoo.shaadi.com/india-matrimony


From jstroud at mbi.ucla.edu  Fri May 27 14:31:13 2005
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Fri, 27 May 2005 11:31:13 -0700
Subject: What are OOP's Jargons and Complexities?
In-Reply-To: <wz4qcpav2j.fsf@ordesa.cs.uu.nl>
References: <1116843761.619249.144790@g47g2000cwa.googlegroups.com>
	<1117158478.701216.130110@f14g2000cwb.googlegroups.com>
	<wz4qcpav2j.fsf@ordesa.cs.uu.nl>
Message-ID: <200505271131.13429.jstroud@mbi.ucla.edu>

On Friday 27 May 2005 02:15 am, Piet van Oostrum wrote:
> >>>>> "Xah Lee" <xah at xahlee.org> (XL) wrote:
> >
> >XL> Joe: lang x is strongly typed
> >XL> Dave: you mean statically typed?
> >XL> John: no no, that's weakly typed.
>
> That should have been `weekly typed', according to the link below.
> Maybe there is also `daily typed' or `monthly typed'?
>
> >XL> http://xahlee.org/UnixResource_dir/writ/jargons.html

"""
If mathematicians are designing computer languages, they would probably just 
called such thing _pure functions_. The term conveys the meaning, without the 
?lamba? abstruseness.
"""

Proposing "jargon" to cure "jargon". Good job! Of course nothing will ever 
rival "jargonize", the crown jewl of all "jargon".

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From littlejohn.75 at news.free.fr  Sat May  7 12:04:15 2005
From: littlejohn.75 at news.free.fr (F. Petitjean)
Date: 07 May 2005 16:04:15 GMT
Subject: get file modification time in mm/dd/yyyy format?
References: <1115479427.957430.114270@o13g2000cwo.googlegroups.com>
Message-ID: <427ce6ff$0$24440$626a14ce@news.free.fr>

Le 7 May 2005 08:23:48 -0700, beliavsky at aol.com a ?crit :
> Using Python 2.4 on Windows, for me the command
> 
> print os.stat("temp.txt")[stat.ST_MTIME]
> 
> gives
> 
> 1115478343 ,
> 
> which is "seconds since the epoch". How can I get the modification time
> in a format such as
> 
> 05/07/2005  11:05 AM
> 
> as in Windows with the dir command? Ideal would be a tuple of 6 values,
> (year,month,day,hour,minute,second). Thanks.
> 
I type
import time
dir(time)
lot of stuff
help(time.localtime)
localtime([seconds]) ->
    (tm_year,tm_mon,tm_day,tm_hour,tm_min,tm_sec,tm_wday,tm_yday,tm_isdst)

Convert seconds since the Epoch to a time tuple expressing local time.
When 'seconds' is not passed in, convert the current time instead.

>>> time.localtime(1115478343)
(2005, 5, 7, 17, 5, 43, 5, 127, 1)
it seems to be  7 may 2005  17h 5 minutes 43 seconds

To have such a formatting you have to type help(time.strptime) which
sadly will say
See the library reference manual for formatting codes (same as strftime()).

--- 
there is no perfect world



From peter at engcorp.com  Fri May  6 16:31:33 2005
From: peter at engcorp.com (Peter Hansen)
Date: Fri, 06 May 2005 16:31:33 -0400
Subject: annonymous functions -- how to
In-Reply-To: <z0Oee.14624$gc6.13188@okepread04>
References: <1115239458.776800.240080@g14g2000cwa.googlegroups.com><d5bdip$bpp$05$2@news.t-online.com><42795acb.685370470@news.oz.net><1115264804.625020.203800@f14g2000cwb.googlegroups.com><YuWdnVUxIKrdmuffRVn-oA@powergate.ca>	<TPree.10739$fI.442@fed1read05><mailman.84.1115365568.29826.python-list@python.org>	<2fNee.10965$fI.8507@fed1read05>
	<mailman.105.1115400003.29826.python-list@python.org>
	<z0Oee.14624$gc6.13188@okepread04>
Message-ID: <ANOdnZP8Q63YSebfRVn-jw@powergate.ca>

Dave Benjamin wrote:
> def add_thingy():
>     def func(thingy_id):
>         print 'got thingy id:', thingy_id
>         def funnc(doodad_id):
>             print 'got doodad id:', doodad_id
>             def func(thingy_doodad):
>                 print 'thingy doodad created, froobling...'
>                 frooble(thingy_doodad)
>                 print 'froobling complete'
>             with_new_thingy_doodad(thingy_id, doodad_id, func)
>         with_next_doodad_id(func)
>     with_next_thingy_id(func)
> 
> This function now has an infinite loop. Can you spot the reason?

Not offhand, and to be completely honest, the original with the longer 
names was equally unreadable.  I doubt this is the best way to do 
whatever the heck it is that this is supposed to do.

Oh, and while I was typing my eyes fell on "funnc" misspelled above. 
Presumably that's your loop...

Spelling "func" as "_" would tend to avoid this as well, unless you have 
a keyboard that repeats keys accidentally.

-Peter


From fumanchu at amor.org  Tue May 17 15:32:30 2005
From: fumanchu at amor.org (Robert Brewer)
Date: Tue, 17 May 2005 12:32:30 -0700
Subject: processing a Very Large file
Message-ID: <3A81C87DC164034AA4E2DDFE11D258E37720D1@exchange.hqamor.amorhq.net>

DJTB wrote:
> I'm trying to manually parse a dataset stored in a file. The 
> data should be converted into Python objects.
> 
> Here is an example of a single line of a (small) dataset:
> 
> 3 13 17 19 -626177023 -1688330994 -834622062 -409108332 
> 297174549 955187488
> 589884464 -1547848504 857311165 585616830 -749910209 
> 194940864 -1102778558
> -1282985276 -1220931512 792256075 -340699912 1496177106 1760327384
> -1068195107 95705193 1286147818 -416474772 745439854 
> 1932457456 -1266423822
> -1150051085 1359928308 129778935 1235905400 532121853
> 
> The first integer specifies the length of a tuple object. In 
> this case, the tuple has three element: (13, 17, 19)
> The other values (-626177023 to 532121853) are elements of a Set.
> 
> I use the following code to process a file:
> 
> 
> from time import time
> from sets import Set
> from string import split
> file = 'pathtable_ht.dat'
> result = []
> start_time = time ()
> f=open(file,'r')
> for line in f:
>         splitres = line.split()
>         tuple_size = int(splitres[0])+1
>         path_tuple = tuple(splitres[1:tuple_size])
>         conflicts = Set(map(int,splitres[tuple_size:-1]))
>         # do something with 'path_tuple' and 'conflicts'
>         # ... do some processing ...
>         result.append(( path_tuple, conflicts))
> 
> f.close()
> print time() - start_time
> 
> 
> The elements (integer objects) in these Sets are being shared 
> between the
> sets, in fact, there are as many distinct element as there 
> are lines in the
> file (eg 1000 lines -> 1000 distinct set elements). AFAIK, 
> the elements are
> stored only once and each Set contains a pointer to the actual object
> 
> This works fine with relatively small datasets, but it 
> doesn't work at all
> with large datasets (4500 lines, 45000 chars per line).
> 
> After a few seconds of loading, all main memory is consumed 
> by the Python
> process and the computer starts swapping. After a few more 
> seconds, CPU
> usage drops from 99% to 1% and all swap memory is consumed:
> 
> Mem:    386540k total,   380848k used,     4692k free,      
> 796k buffers
> Swap:   562232k total,   562232k used,        0k free,    
> 27416k cached
> 
> At this point, my computer becomes unusable.
> 
> I'd like to know if I should buy some more memory (a few GB?) 
> or if it is
> possible to make my code more memory efficient.

The first question I would ask is: what are you doing with "result", and
can the consumption of "result" be done iteratively?


Robert Brewer
System Architect
Amor Ministries
fumanchu at amor.org


From anthra.norell at tiscalinet.ch  Sat May  7 07:51:40 2005
From: anthra.norell at tiscalinet.ch (Anthra Norell)
Date: Sat, 7 May 2005 13:51:40 +0200
Subject: Encryption with Python?
References: <1115324411.952821.150780@o13g2000cwo.googlegroups.com><001301c552db$dd19d3e0$0201a8c0@mcuf7>
	<d5i0as$ejd$1@sea.gmane.org>
Message-ID: <009901c552fb$220132e0$0201a8c0@mcuf7>

Thanks a lot for the feedback. This is certainly a great learning
experience. It's a fascinating topic too. Without wishing to annoy, I'd be
interested in knowing more. I insert questions below.

----- Original Message -----
From: "Robert Kern" <rkern at ucsd.edu>
To: <python-list at python.org>
Sent: Saturday, May 07, 2005 11:11 AM
Subject: Re: Encryption with Python?


> Anthra Norell wrote:
> > I rolled my own for relatively short sequences, like passwords. The key
is
> > an integer. To decrypt use the negative encryption key. I consider the
> > encryption unbreakable, as it is indistinguishable from a random
sequence.
> >
> > Frederic
> >
> > ###
> >
> > def crypt (sequence, key):
> >    import random
> >    sign = (key > 0) * 2 - 1
> >    random.seed (abs (key * sign))
> >    s = ''
> >    for i in xrange (len (sequence)):
> >       r = random.randint (0, 255)
> >       s += chr ((ord (sequence [i]) + r * sign) % 256)
> >    return s
>
> The mind boggles.
>
> You do realize that if I have two ciphertexts encrypted with the same
> key, I can subtract them? Then I have a sequence, that while not
> immediately readable, is just a straightforward combination of the two
> plaintexts without any encryption.

How do you know the same key was used?
What if the messages aren't the same length?
How does one reconstruct either or both of two messages from their
difference?

> This function is also vulnerable to a chosen-plaintext attack. The
> underlying PRNG is definitely not suitable for cryptographic
> applications. The documentation even says so!

What is a plain-text attack? Is it you give me a plain text. I encrypt it
using the same keys and hand you the result? Would I comply with the
request?

> http://docs.python.org/lib/module-random.html
> "However, being completely deterministic, it is not suitable for all
> purposes, and is completely unsuitable for cryptographic purposes."

The logic escapes me if it is understood to mean that cryptography, in order
to be usable, has to be indeterministic. If, however, it is meant to suggest
that it is the reversible, direct one-on-one relation between all the
characters of a plain text and its encryption that falls short of
state-of-the-art technology, I'd have no problem with that. That doesn't
mean, however, that an exercise is required to measure up to
state-of-the-art standards in order to be taken seriously. I do invent my
own solutions for simple problems. I find it more challenging than stalking
other people's solutions how ever superior and typically it also saves me
time. It is not my ambition to excel in any field, nor to flaunt my
erudition. It is my ambition to satisfy the requirements of a given task.
And this, I think, my solution does. I can be wrong and if so, I'd
appreciate being proven wrong. I have now received well-meaning advice for
which I am grateful. But I haven't been proven wrong. I claim that my
solution satisfies the requirements of the task at hand and challenge anyone
to prove the contrary. You can meet the challenge by deciphering the
following tiny message, knowing now the encryption method, which in practice
would not be known and, as it seems, would hardly be suspected by
deciphering experts for its amateurishness.

> Do yourself a favor and don't try to roll your own cryptographic
> functions. Do everyone else a favor and don't call something
> "unbreakable" unless you actually have the domain expertise to make that
> determination.

Here's the challenge. Prove this breakable

'\x10\x88d\x1d\xba\xa1\xdcK\x05w\x02/s\xa7Q0\xeb8\xb6Gx\xef\xcb\x1e=\xf5\x7f
\x9bI\xcb(\x87>\xa5\x04\xc1soF\xfd\xc6\xc6\xd9|\x971\xdb\xcdT\tw#\x86a\xdc\x
b8P\xfb=n\xda\x80\x9f\x84m\x12\x98\x98\xca=o\x0b\x8e\x08O\xb7\x0b\x04SC\x96\
xc7\xab*\x0b\x996\x06\x86\x83(\x8dQ\x9eG\x8f$\xb2x)\xa9fv\x0c1B\x9b\r\xde\xf
fc\x08'

When you give up we may try a plain-text attack. Okay?

> And do read _Practical Cryptography_.

I certainly will.

> --
> Robert Kern
> rkern at ucsd.edu
>
> "In the fields of hell where the grass grows high
>   Are the graves of dreams allowed to die."
>    -- Richard Harter
>
> --
> http://mail.python.org/mailman/listinfo/python-list



From max at alcyone.com  Thu May  5 20:11:33 2005
From: max at alcyone.com (Erik Max Francis)
Date: Thu, 05 May 2005 17:11:33 -0700
Subject: F.readline
In-Reply-To: <mailman.79.1115336847.29826.python-list@python.org>
References: <000001c551ca$15ddd3b0$6400a8c0@grondor>
	<mailman.79.1115336847.29826.python-list@python.org>
Message-ID: <UP6dnb9wefOrK-ffRVn-3A@speakeasy.net>

Robert Kern wrote:

> There is no such command built in. You will have to build it yourself 
> out of the components that are available.

linecache is probably what he's looking for.

-- 
Erik Max Francis && max at alcyone.com && http://www.alcyone.com/max/
San Jose, CA, USA && 37 20 N 121 53 W && AIM erikmaxfrancis
   No man who needs a monument ever ought to have one.
   -- Nathaniel Hawthorne


From ordnancemarine at yahoo.com  Sun May  8 17:27:35 2005
From: ordnancemarine at yahoo.com (les)
Date: Sun, 08 May 2005 21:27:35 GMT
Subject: Clueless with cPickle
Message-ID: <pan.2005.05.08.21.27.33.22267@yahoo.com>

I am working on a homework assignment and trying to use cPickle to store
the answers from questor.py I believe I have the syntax correct but am not
sure if I am placing everything where it needs to be.  Any help would be
greatly appreciated.  When I attempt to run what I have I end up with the
following:

Traceback (most recent call last):
  File "/home/les/workspace/Module 2/questor.py", line 18, in ?
    f = file(questorlistfile)
NameError: name 'questorlistfile' is not defined

I thought that I had defined questorlistfile on the 4th line below

# define some constants for future use 
 
import cPickle as p
#import pickle as p

questorfile = 'questor.data' # the name of the file where we will store the object

questorlist = []

# Write to the file
f = file(questorfile, 'w')
p.dump(questorlist, f) # dump the object to a file
f.close()

del questorlist # remove the shoplist

# Read back from the storage
f = file(questorlistfile)
storedlist = p.load(f)
print storedlist
 
kQuestion = 'question' 
kGuess = 'guess' 
 
# define a function for asking yes/no questions 
def yesno(prompt): 
    ans = raw_input(prompt) 
    return (ans[0]=='y' or ans[0]=='Y') 
 
# define a node in the question tree (either question or guess) 
class Qnode: 
 
    # initialization method 
    def __init__(self,guess): 
        self.nodetype = kGuess 
        self.desc = guess 
 
    # get the question to ask     
    def query(self): 
        if (self.nodetype == kQuestion): 
            return self.desc + " " 
        elif (self.nodetype == kGuess): 
            return "Is it a " + self.desc + "? " 
        else: 
            return "Error: invalid node type!" 
 
    # return new node, given a boolean response 
    def nextnode(self,answer): 
        return self.nodes[answer] 
 
    # turn a guess node into a question node and add new item 
    # give a question, the new item, and the answer for that item 
    def makeQuest( self, question, newitem, newanswer ): 
 
        # create new nodes for the new answer and old answer 
        newAnsNode = Qnode(newitem) 
        oldAnsNode = Qnode(self.desc) 
 
        # turn this node into a question node 
        self.nodetype = kQuestion 
        self.desc = question 
 
        # assign the yes and no nodes appropriately 
        self.nodes = {newanswer:newAnsNode, not newanswer:oldAnsNode} 
 
 
 
def traverse(fromNode): 
    # ask the question 
    yes = yesno( fromNode.query() ) 
 
    # if this is a guess node, then did we get it right? 
    if (fromNode.nodetype == kGuess): 
        if (yes): 
            print "I'm a genius!!!" 
            return 
        # if we didn't get it right, return the node 
        return fromNode 
 
    # if it's a question node, then ask another question 
    return traverse( fromNode.nextnode(yes) ) 
 
def run(): 
    # start with a single guess node 
    topNode = Qnode('python') 
 
    done = 0 
    while not done: 
        # ask questions till we get to the end 
        result = traverse( topNode ) 
 
        # if result is a node, we need to add a question 
        if (result): 
            item = raw_input("OK, what were you thinking of? ") 
            print "Enter a question that distinguishes a", 
            print item, "from a", result.desc + ":" 
            q = raw_input() 
            ans = yesno("What is the answer for " + item + "? ") 
            result.makeQuest( q, item, ans ) 
            print "Got it." 
 
        # repeat until done 
        print 
        done = not yesno("Do another? ") 
        print 
 
 
# immediate-mode commands, for drag-and-drop or execfile() execution 
if __name__ == '__main__': 
    run() 
    print 
    raw_input("press Return>") 
else: 
    print "Module questor imported." 
    print "To run, type: questor.run()" 
    print "To reload after changes to the source, type: reload(questor)" 
 
# end of questor.py 


From gsakkis at rutgers.edu  Mon May 16 20:51:31 2005
From: gsakkis at rutgers.edu (George Sakkis)
Date: 16 May 2005 17:51:31 -0700
Subject: Parsing text into dates?
References: <1116277171.492587.38080@g47g2000cwa.googlegroups.com>
Message-ID: <1116291091.292107.196730@g49g2000cwa.googlegroups.com>

"Thomas W" wrote:

> I'm developing a web-application where the user sometimes has to
enter
> dates in plain text, allthough a format may be provided to give
clues.
> On the server side this piece of text has to be parsed into a
datetime
> python-object. Does anybody have any pointers on this?
>
> Besides the actual parsing, my main concern is the different locale
> date formats and how to be able to parse those strange us-like
> "month/day/year" compared to the clever and intuitive european-style
> "day/month/year" etc.
>
> I've searched google, but haven't found any good referances that
helped
> me solve this problem, especially with regards to the locale date
> format issues.
>
> Best regards,
> Thomas

Although it is not a solution to the general localization problem, you
may try the mx.DateTimeFrom() factory function
(http://www.egenix.com/files/python/mxDateTime.html#DateTime) for the
parsing part. I had also written some time ago a more robust and
customized version of such parser. The ambiguous us/european style
dates are disambiguated by the provided optional argument USA (False by
default <wink>). Below is the doctest and the documentation (with
epydoc tags); mail me offlist if you'd like to check it out.

George

#=======================================================

def parseDateTime(string, USA=False, implyCurrentDate=False,
                  yearHeuristic=_20thcenturyHeuristic):
    '''Tries to parse a string as a valid date and/or time.

    It recognizes most common (and less common) date and time formats.

    Examples:
        >>> # doctest was run succesfully on...
        >>> str(datetime.date.today())
        '2005-05-16'
        >>> str(parseDateTime('21:23:39.91'))
        '21:23:39.910000'
        >>> str(parseDateTime('16:15'))
        '16:15:00'
        >>> str(parseDateTime('10am'))
        '10:00:00'
        >>> str(parseDateTime('2:7:18.'))
        '02:07:18'
        >>> str(parseDateTime('08:32:40 PM'))
        '20:32:40'
        >>> str(parseDateTime('11:59pm'))
        '23:59:00'
        >>> str(parseDateTime('12:32:9'))
        '12:32:09'
        >>> str(parseDateTime('12:32:9', implyCurrentDate=True))
        '2005-05-16 12:32:09'
        >>> str(parseDateTime('93/7/18'))
        '1993-07-18'
        >>> str(parseDateTime('15.6.2001'))
        '2001-06-15'
        >>> str(parseDateTime('6.15.2001'))
        '2001-06-15'
        >>> str(parseDateTime('1980, November 20'))
        '1980-11-20'
        >>> str(parseDateTime('4 Mar 79'))
        '1979-03-04'
        >>> str(parseDateTime('July 4'))
        '2005-07-04'
        >>> str(parseDateTime('15/08'))
        '2005-08-15'
        >>> str(parseDateTime('5 Mar 3:45pm'))
        '2005-03-05 15:45:00'
        >>> str(parseDateTime('01 02 2003'))
        '2003-02-01'
        >>> str(parseDateTime('01 02 2003', USA=True))
        '2003-01-02'
        >>> str(parseDateTime('3/4/92'))
        '1992-04-03'
        >>> str(parseDateTime('3/4/92', USA=True))
        '1992-03-04'
        >>> str(parseDateTime('12:32:09 1-2-2003'))
        '2003-02-01 12:32:09'
        >>> str(parseDateTime('12:32:09 1-2-2003', USA=True))
        '2003-01-02 12:32:09'
        >>> str(parseDateTime('3:45pm 5 12 2001'))
        '2001-12-05 15:45:00'
        >>> str(parseDateTime('3:45pm 5 12 2001', USA=True))
        '2001-05-12 15:45:00'

    @param USA: Disambiguates strings that are valid dates in both
(month,
        day, year) and (day, month, year) order (e.g. 05/03/2002). If
True,
        the first format is assumed.
    @param implyCurrentDate: If True and the date is not given, the
current
        date is implied.
    @param yearHeuristic: If not None, a callable f(year) that
transforms the
        value of the given year. The default heuristic transforms
2-digit
        years to 4-digit years assuming they are in the 20th century::
            lambda year: (year >= 100 and year
                          or year >= 10 and 1900 + year
                          or None)
        The heuristic should return None if the year is not considered
valid.
        If yearHeuristic is None, no year transformation takes place.
    @return:
        - C{datetime.date} if only the date is recognized.
        - C{datetime.time} if only the time is recognized and
implyCurrentDate
            is False.
        - C{datetime.datetime} if both date and time are recognized.
    @raise ValueError: If the string cannot be parsed successfully.
    '''



From bokr at oz.net  Thu May 12 11:14:09 2005
From: bokr at oz.net (Bengt Richter)
Date: Thu, 12 May 2005 15:14:09 GMT
Subject: Launch file in Notepad
References: <42835db6$0$1334$5fc3050@dreader2.news.tiscali.nl>
	<mailman.462.1115906101.29826.python-list@python.org>
	<1186phdog83fmf6@corp.supernews.com>
Message-ID: <42836e72.1345761282@news.oz.net>

On Thu, 12 May 2005 14:20:29 -0000, Grant Edwards <grante at visi.com> wrote:

>On 2005-05-12, Brian van den Broek <bvande at po-box.mcgill.ca> wrote:
>
>>> b1="c:\test.txt"
>>> os.system('notepad.exe ' + b1)
>>> 
>>> However, the t of test is escaped by the \, resulting in Notepad trying 
>>> to open "c: est.txt".
>
>> There are several ways, but the preferred solution is to switch the 
>> slash direction: "c:/test.txt". Python's smart enough to notice its 
>> running on Windows and do the right thing with the slash.
>
>Does Python really look at the string and mess with the slash?
>I don't think it needs to, since the Windows system calls have
>always accepted forward slashses, haven't they?
>
For a path parameter, I think so. But various command shells us '/' the
way unix uses '-' -- i.e., for options/switches. E.g.
    ls -R foo/bar
would work as
    dir /s "foo/bar"
since the shell would pass on the quoted string to the os level (with quotes removed)
Likewise
    dir foo\bar/s
would work, but not
    dir foo/bar/s
or
    dir/s foo/bar

I don't know why MS used backslashes when unix had a perfectly good path syntax
(not to mention drive letter idiocy). Maybe some legal idiocy, wanting to be
different to be safe from SCO types?

Regards,
Bengt Richter


From tdelaney at avaya.com  Sun May 15 21:44:15 2005
From: tdelaney at avaya.com (Delaney, Timothy C (Timothy))
Date: Mon, 16 May 2005 11:44:15 +1000
Subject: The world is really unstable these days......
Message-ID: <338366A6D2E2CA4C9DAEAE652E12A1DE02520518@au3010avexu1.global.avaya.com>

Peter Hansen wrote:

> Lucas Raab wrote:
>> <snip>
> [...]
>> Y'know, I really do love these random word spam messages. They're
>> quite entertaining to read.
> 
> Although, when posting in reply to them it apparently helps those who
> read this through the mailing list, and who have Bayesian filtering of
> spam happening, if you would snip the entire content.
> 
> Otherwise it can confuse the spam blockers since they have your name
> generally associated with useful messages (I presume ;-) )  instead of
> with spam.  You're messin' with their statistics, man!  ;-)

Absolutely. Another example of where these things can mess with
Spambayes is people replying to XL and correcting his horrendous
troll-posts. It makes it really hard for Spambayes to determine that
*anything* coming from XL is spam.

Tim Delaney


From gsakkis at rutgers.edu  Thu May 19 05:27:26 2005
From: gsakkis at rutgers.edu (George Sakkis)
Date: 19 May 2005 02:27:26 -0700
Subject: help with generators
References: <1116461870.130411.9280@g43g2000cwa.googlegroups.com>
	<hd-dnbBAGZJPgxHfRVn-rA@comcast.com>
Message-ID: <1116494846.500522.31920@g47g2000cwa.googlegroups.com>

"Steven Bethard" wrote:

> It would help if you explained what you expected.  But here's code
that
> prints about the same as your non-generator function.
>
> py> def bin(n):
> ...     s = []
> ...     def bin(n):
> ...         if n == 0:
> ...             yield s
> ...         else:
> ...             s.append(0)
> ...             for s1 in bin(n - 1):
> ...                 yield s1
> ...             s.pop()
> ...             s.append(1)
> ...             for s1 in bin(n - 1):
> ...                 yield s1
> ...             s.pop()
> ...     return bin(n)
> ...
> py> for s in bin(1):
> ...     print s
> ...
> [0]
> [1]
> py> for s in bin(2):
> ...     print s
> ...
> [0, 0]
> [0, 1]
> [1, 0]
> [1, 1]
>
> Note that to make the recursive calls work, you *must* iterate
through
> them, thus what was in your code:
>
>      bin(n - 1)
>
> now looks like:
>
>      for s1 in bin(n - 1):
>          yield s1
>
> This is crucial.  bin(n - 1) creates a generator object.  But unless
you
> put it in a for-loop (or call it's .next()) method, the generator
will
> never execute any code.
>
> HTH,
>
> STeVe


A caveat of the implementation above: it yields the same instance (s),
which is unsafe if the loop variable is modified (e.g. in the "for s in
bin(n)" loop, s should not be modified). Moreover, each yielded value
should be 'consumed' and then discarded; attempting to store it (as in
list(bin(n))) references only the last yielded value.

Here's a shorter, clear and safe implementation:

def bin2(n):
    if n:
        for tail in bin2(n-1):
            yield [0] + tail
            yield [1] + tail
    else:
        yield []

It also turns out to be faster than the original despite yielding a new
list every time:
$ python /usr/local/lib/python2.4/timeit.py -s "from bin import bin"
"for i in bin(10): pass"
100 loops, best of 3: 5.21 msec per loop
$ python /usr/local/lib/python2.4/timeit.py -s "from bin import bin2"
"for i in bin2(10): pass"
100 loops, best of 3: 2.68 msec per loop

The reason is that the original computes the same permutations ("for s1
in bin(n - 1)") twice. Here's a faster version that preallocates the
list and sets the 0s and 1s for each permutation:

def bin3(n):
    array = [None]*n
    def _bin(n):
        if not n:
            yield array
        else:
            n -= 1
            for perm in _bin(n):
                # replace 'yield perm' with 'yield list(perm)' for safe
                # mutation and accumulation of yielded lists
                perm[n] = 0; yield perm
                perm[n] = 1; yield perm
    return _bin(n)

$ python /usr/local/lib/python2.4/timeit.py -s "from bin import bin3"
"for i in bin3(10): pass"
1000 loops, best of 3: 587 usec per loop

Cheers,
George



From kbk at shore.net  Wed May 25 01:02:19 2005
From: kbk at shore.net (Kurt B. Kaiser)
Date: Wed, 25 May 2005 01:02:19 -0400 (EDT)
Subject: Weekly Python Patch/Bug Summary
Message-ID: <200505250502.j4P52JB1001530@bayview.thirdcreek.com>

Patch / Bug Summary
___________________

Patches :  342 open ( +3) /  2839 closed ( +1) /  3181 total ( +4)
Bugs    :  936 open ( -2) /  4974 closed (+12) /  5910 total (+10)
RFE     :  189 open ( +2) /   159 closed ( +2) /   348 total ( +4)

New / Reopened Patches
______________________

optparse documentation bug fixes  (2005-05-18)
       http://python.org/sf/1204347  opened by  Barry A. Warsaw

Bugfix for signal-handler on x64 Platform  (2005-05-20)
       http://python.org/sf/1205436  opened by  Andr? Fritzsche

updates for the compiler package  (2005-05-21)
       http://python.org/sf/1206077  opened by  Stelios

An URL for UnicodeData File Format 3.2 has changed.  (2005-05-24)
       http://python.org/sf/1207985  opened by  Darek Suchojad

Patches Closed
______________

workaround deprecated ostat structure in <sys/stat.h>  (2005-05-17)
       http://python.org/sf/1203329  closed by  loewis

New / Reopened Bugs
___________________

Documentation error?  (2005-05-18)
       http://python.org/sf/1204734  opened by  John Eikenberry

urllib has spurious print statement  (2005-05-20)
       http://python.org/sf/1205544  opened by  Stuart Wray

Compile fails on Darwin8 with --with-cxx=g++  (2005-05-20)
       http://python.org/sf/1205568  opened by  Robert M. Zigweid

wrong location for math lib with --prefix  (2005-05-20)
       http://python.org/sf/1205736  opened by  Thomas Richter

IDLE 1.0.5 (Python 2.3.5) crashes under Windows  (2005-05-21)
       http://python.org/sf/1206232  opened by  Torsten Bronger

weakref cannot handle bound methods (in contrast to docu)  (2005-05-22)
       http://python.org/sf/1206537  opened by  Raik Gruenberg

class property fset not working  (2005-05-24)
       http://python.org/sf/1207379  opened by  Master_Jaf

installer ignores changed installation directory  (2005-05-24)
       http://python.org/sf/1207466  opened by  Blubb Fallo

Issue in grammar  (2005-05-24)
       http://python.org/sf/1207501  opened by  venkat manian

Issue in grammar  (2005-05-24)
CLOSED http://python.org/sf/1207509  opened by  venkat manian

Bugs Closed
___________

Problem with recursion in dict (crash with core dump)  (2005-05-13)
       http://python.org/sf/1201456  closed by  vys

Windows msi installer fails on virtual drives  (2005-05-12)
       http://python.org/sf/1200287  closed by  loewis

urllib2 authentication redirection error(?)  (2004-11-21)
       http://python.org/sf/1070735  closed by  allanbwilson

No documentation for urllib2 exception classes  (2004-04-29)
       http://python.org/sf/944407  closed by  fresh

file("foo", "wU") is silently accepted  (2004-06-05)
       http://python.org/sf/967182  closed by  montanaro

UnboundLocalError in cgitb.py  (2003-12-16)
       http://python.org/sf/861340  closed by  montanaro

Python 2.4.1 Installer ended prematurely  (2005-05-11)
       http://python.org/sf/1199947  closed by  loewis

xml.dom.minidom.Node.removeChild() doesn't remove  (2005-03-06)
       http://python.org/sf/1157901  closed by  mkempka

csv writer bug on windows  (2004-04-29)
       http://python.org/sf/944890  closed by  montanaro

Importing anydbm generates exception if _bsddb unavailable  (2003-05-02)
       http://python.org/sf/731501  closed by  montanaro

Explicit interp reference during build fails  (2003-07-08)
       http://python.org/sf/768068  closed by  montanaro

Issue in grammar  (2005-05-24)
       http://python.org/sf/1207509  closed by  mwh

New / Reopened RFE
__________________

Let shift operators take any integer value  (2005-05-19)
       http://python.org/sf/1205239  opened by  David Albert Torpey

Right Click Context Menu  (2005-05-24)
       http://python.org/sf/1207589  opened by  Mike Foord

Clipboard Cleared on Close  (2005-05-24)
       http://python.org/sf/1207592  opened by  Mike Foord

Bottom Scroll Bar  (2005-05-24)
       http://python.org/sf/1207613  opened by  Mike Foord

RFE Closed
__________

enhancing os.chown functionality  (2005-05-12)
       http://python.org/sf/1200804  closed by  loewis

"replace" function should accept lists.  (2005-04-17)
       http://python.org/sf/1184678  closed by  loewis



From fredrik at pythonware.com  Fri May  6 02:36:10 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Fri, 6 May 2005 08:36:10 +0200
Subject: Hard times with packages and instances
References: <1115306696.185751.234020@o13g2000cwo.googlegroups.com><mailman.69.1115327340.29826.python-list@python.org>
	<1115358150.572169.241530@z14g2000cwz.googlegroups.com>
Message-ID: <d5f6tu$ep0$2@sea.gmane.org>

Kay Schluehr wrote:

> > if you manage to import the same thing multiple times, you'll have
> > multiple class objects representing the same source code, and is-
> > instance won't work properly.
>
> Importing a class/module multiple times does not cause the problem.
> Writing
>
>   import ForeignPackage.B as B1
>   import ForeignPackage.B as B2

that doesn't import it more than once; Python uses a cache to hold
modules, but the cache only works if Python can be sure that the
modules are the same thing, based on the information in the *import*
statement.  in this case, "ForeignPackage.B" is clearly the same thing
as "ForeignPackage.B".

if you change the path around (in your case, by adding MyPackage to
the path, rather than relying on path-relative import), you'll introduce
multiple ways to import the same module, and the cache won't work
properly.  and when the cache doesn't work, isinstance breaks down
for the reason I stated.

> Flattening the package structure would solve the problem as well as
> destroying all file-system based packages and abandon them from Python.

well, packages for just fine for me.  if you cannot get them to work,
maybe you should stop doing things that don't work.

</F>





From black.bird at NOSPAMtiscali.it  Wed May  4 14:38:45 2005
From: black.bird at NOSPAMtiscali.it (Michele Ferretti)
Date: Wed, 04 May 2005 18:38:45 GMT
Subject: WordPress Python Library 1.0
In-Reply-To: <1115135977.075884.178750@z14g2000cwz.googlegroups.com>
References: <Rmwde.850131$b5.37722456@news3.tin.it>
	<VKwde.1322130$35.49403624@news4.tin.it>
	<mailman.82.1115102552.6583.python-list@python.org>
	<qbFde.1322731$35.49440903@news4.tin.it>
	<1115135977.075884.178750@z14g2000cwz.googlegroups.com>
Message-ID: <VE8ee.1331463$35.49686331@news4.tin.it>

stewart.midwinter at gmail.com wrote:
> Caro Michele:
> 
> Non parlo italiano, ma parlo espagnol.  I can read your website, and
> your library looks interesting.  Would you like me to provide an
> english translation of your webpage so that you can provide a version
> for english speakers?
> 
> I am a WordPress user and a Python programmer so I will be keen to try
> out your library.
> 
> cheers
> S
> 

I have traslate project web page, here you are:

============================================================

WordPress is considered one of more appreciate blogs builders. This 
software is installed from many people and like most tools have a 
administration user interface based on XML-RPC protocol. XML-RPC is a 
protocol for building WebServices that use HTTP and XML messages. 
WordPress can be controlled (not completely) by remote administration 
interface through XML messages. This library permit you to control 
remotely a WordPress installation. Use of library is very simple, you 
can write a small scripts or full applications that permit to automate 
publishing of articles on your blog/site powered by WordPress. This is a 
small example: [esempio] Library is released under terms of GNU LGPL and 
it's available for download from this site.

At this time are available these actions:

     * Publishing new post
     * Modify old post
     * Publishing draft post
     * Deleting post
     * Changing post's categories
     * Getting blog and user informations
     * Upload multimedia files like movies or photos
     * Getting last recent articles list
     * Getting last post
     * Getting Trackbacks of post
     * Getting Pingbacks of post


============================================================

-- 

Michele Ferretti

ICQ#: 14491159
Skype: m.ferretti79
black DOT bird AT tiscali DOT it
www.blackbirdblog.it


From hello at spamm.er  Thu May 26 03:11:44 2005
From: hello at spamm.er (alex goldman)
Date: Thu, 26 May 2005 00:11:44 -0700
Subject: What are OOP's Jargons and Complexities?
References: <1116843761.619249.144790@g47g2000cwa.googlegroups.com>
	<bAske.14563$yx.14338@fe08.lga> <3584469.Aerji1NdQr@yahoo.com>
	<xn0e2ntb7j0p7lg00b@news.verizon.net>
Message-ID: <2225581.h9zeA6l3zh@yahoo.com>

John McGrath wrote:

> Unfortunately, there is no
> consensus as to what the term means.

If the language allows the programmer to write programs from the 'slack'
domain, by saying "just trust me on this", then it's not strongly typed.

What other meanings are there? I wasn't aware of the lack of consensus.


From michele.simionato at gmail.com  Fri May 27 00:10:57 2005
From: michele.simionato at gmail.com (Michele Simionato)
Date: 26 May 2005 21:10:57 -0700
Subject: __init__() not called automatically
In-Reply-To: <1117081917.760603.82610@z14g2000cwz.googlegroups.com>
References: <1117081917.760603.82610@z14g2000cwz.googlegroups.com>
Message-ID: <1117167057.578765.55040@z14g2000cwz.googlegroups.com>

If you really want, you can customize the object system
to automatically call __init__, via a custom metaclass.
There is an example in my ACCU lectures (cooperative_init.py):

http://www.reportlab.org/~andy/accu2005/pyuk2005_simionato_wondersofpython.zip

Michele Simionato



From dalke at dalkescientific.com  Mon May 30 18:13:48 2005
From: dalke at dalkescientific.com (Andrew Dalke)
Date: Mon, 30 May 2005 22:13:48 GMT
Subject: Exiting SocketServer: socket.error: (98, 'Address already in use')
References: <d7fkii$6pa$1@wake.carmen.se>
Message-ID: <pan.2005.05.30.22.13.48.870442@dalkescientific.com>

Magnus Lyck? wrote:
> Why doesn't my socket
> get released by the OS when I exit via my handle_error?

Hi Magnus,

  I wrote about this at
http://www.dalkescientific.com/writings/diary/archive/2005/04/21/using_xmlrpc.html

The reason for it is described at
  http://hea-www.harvard.edu/~fine/Tech/addrinuse.html

You can set the class variable "allow_reuse_address = True" in
your derived ExitableSocketServer to get the behaviour you
expect, at the expense of some problems mentioned in the
above URL.

				Andrew
				dalke at dalkescientific.com



From jabel at plus.net  Fri May 27 03:38:06 2005
From: jabel at plus.net (John Abel)
Date: Fri, 27 May 2005 08:38:06 +0100
Subject: More Rewrite Request Within SocketServer?
Message-ID: <4296CE5E.5070305@plus.net>

OK, I'm guessing what I was after ( see below ) isn't possible.  Does 
anyone know of an easy way of having verify_request inform the request 
handler of certain events, say client is unauthorised?  I thought of 
having it set a flag, and referring to it from the handler class ( 
self.server.hostAllowed for example ), but that wouldn't work quite 
right in a threaded server.

Any ideas?

J

-------- Original Message --------
Subject: 	ReWrite Request Within SocketServer?
Date: 	Wed, 25 May 2005 17:04:53 +0100
From: 	John Abel <jabel at plus.net>
To: 	python-list at python.org



Hi!

I may be missing something simple, but is there a way to have 
verify_request change the request before it gets processed by the 
RequestHandlerClass?

Regards

J
-- 
http://mail.python.org/mailman/listinfo/python-list





From bill.mill at gmail.com  Tue May  3 14:02:46 2005
From: bill.mill at gmail.com (Bill Mill)
Date: Tue, 3 May 2005 14:02:46 -0400
Subject: trouble with lists
In-Reply-To: <1115142163.472256.205930@o13g2000cwo.googlegroups.com>
References: <1115142163.472256.205930@o13g2000cwo.googlegroups.com>
Message-ID: <797fe3d4050503110229709d32@mail.gmail.com>

On 3 May 2005 10:42:43 -0700, anandr86 at gmail.com <anandr86 at gmail.com> wrote:
> I'm new to python. I tried doing this
> 
> >>> x = [[]] * 3
> >>> print x
> [ [] [] [] ]
> >>> x[0].append( 2 )
> [ [2] [2] [2] ]
> 
> I confused with the last line output. I actually expected something
> like
> 
> [ [2] [] [] ]
> 
> Can anyone give me an explanation. help!!
> 

All three lists refer to the same object:

>>> x = [[]]*3
>>> x
[[], [], []]
>>> #the id function returns the memory address of an object
...
>>> [id(a) for a in x]
[168612012, 168612012, 168612012]

So, when you change the first object, you change all of them. This is
a common gotcha with mutable objects (lists and dictionaries, mostly).
To get three independant lists, try a list comprehension:

>>> y = [[] for i in range(3)]
>>> y
[[], [], []]
>>> [id(b) for b in y]
[168611980, 168612300, 168611916]

Or, replace x[0] with a new list, instead of modifying the one already there:

>>> x[0] = [2]
>>> x
[[2], [], []]

Peace
Bill Mill
bill.mill at gmail.com


From michele.simionato at gmail.com  Thu May 19 05:33:54 2005
From: michele.simionato at gmail.com (Michele Simionato)
Date: 19 May 2005 02:33:54 -0700
Subject: self-promotion of the decorator module
In-Reply-To: <Xns965B6367B75F0duncanbooth@127.0.0.1>
References: <1116484694.122678.11980@f14g2000cwb.googlegroups.com>
	<Xns965B6367B75F0duncanbooth@127.0.0.1>
Message-ID: <1116495234.144678.312910@g49g2000cwa.googlegroups.com>

Notice that the decorator module is at version 0.4 and I still consider
it as experimental. The reason why I posted the link here is to get
feedback and it seems I got it ;)

I will upgrade to version 0.5 shortly, fixing the easily fixable bugs
and
documenting what cannot be easily fixed.

Thanks for testing border cases I would have never imagined!

           Michele Simionato



From http  Sat May  7 04:24:50 2005
From: http (Paul Rubin)
Date: 07 May 2005 01:24:50 -0700
Subject: Encryption with Python?
References: <1115324411.952821.150780@o13g2000cwo.googlegroups.com>
	<mailman.132.1115453413.29826.python-list@python.org>
Message-ID: <7xfywzphnx.fsf@ruckus.brouhaha.com>

"Anthra Norell" <anthra.norell at tiscalinet.ch> writes:
> I rolled my own for relatively short sequences, like passwords. The
> key is an integer. To decrypt use the negative encryption key. I
> consider the encryption unbreakable, as it is indistinguishable from
> a random sequence.

You're using the built-in random module which is designed to provide
only statistical randomness and not cryptographic security.  It should
not be used for encryption.  The math paper describing the function is
quite clear about that.  There is a lot of subtlety to this stuff and
it's easy to make mistakes even if you know what you're doing.  Even
using well-tested block ciphers (various people mentioned DES, AES,
and Blowfish modules) it's easy to make mistakes in choosing operation
modes, thinking you don't need authentication when you really do,
etc., etc.  The book "Practical Cryptography" by Bruce Schneier and
Niels Ferguson is worth looking at if you want to see what you're
getting yourself into.

I hate to come across as plugging my own stuff too much, but

    http://www.nightsong.com/phr/crypto/p3.py

is designed to take care of most of the tricky issues for you while
still having a very simple interface, and also be reasonably fast
(much faster for large messages than any of the pure Python block
cipher modules).  Just use p3_encrypt(plain) to encrypt and
p3_decrypt(cipher) to decrypt.  The main penalty you pay is that the
ciphertext is a couple dozen bytes longer than the plaintext.  There
are cryptographically important reasons for that; don't try to escape
it without knowing exactly what's going on.


From tiissa at nonfree.fr  Mon May 30 15:43:06 2005
From: tiissa at nonfree.fr (tiissa)
Date: Mon, 30 May 2005 21:43:06 +0200
Subject: finding indices in a sequence of parentheses
In-Reply-To: <d7fpci$d89$04$1@news.t-online.com>
References: <u_KdneJ4tt9QuwffRVn-tg@comcast.com>
	<429a382d$0$15392$626a14ce@news.free.fr>
	<d7ebor$sij$00$1@news.t-online.com>
	<429b6082$0$30053$626a14ce@news.free.fr>
	<d7fpci$d89$04$1@news.t-online.com>
Message-ID: <429b6cc9$0$10035$626a14ce@news.free.fr>

Peter Otten wrote:
> I think no amount of testing will give these strange people confidence.
> "Proof" is the magic word here.

Some would maybe be satisfied if your tests cover the whole set of input.

When that's possible, that may be useless. But that's not a matter to 
bother them with. ;)

(And of course, you just don't tell them how you generated their output 
with the same program.)


From jeffelkins at earthlink.net  Fri May 20 19:20:50 2005
From: jeffelkins at earthlink.net (Jeff Elkins)
Date: Fri, 20 May 2005 19:20:50 -0400
Subject: passing arguments
In-Reply-To: <200505201546.53578.jstroud@mbi.ucla.edu>
References: <200505201826.09939.jeffelkins@earthlink.net>
	<200505201546.53578.jstroud@mbi.ucla.edu>
Message-ID: <200505201920.50962.jeffelkins@earthlink.net>

On Friday 20 May 2005 06:46 pm, James Stroud wrote:
> import sys
>
> try:
>   arg1 = sys.argv[1]
> except IndexError:
>   print "This script takes an argument, you boob!"
>   sys.exit(1)
>
> OR, way better: See the optparse module.
>
> On Friday 20 May 2005 03:26 pm, Jeff Elkins wrote:
> > I'm sure this is obvious, but how the heck do pass an argument(s) to a
> > python script from the command line?
> >
> > Thanks,
> >
> > Jeff Elkins

Thanks!



From steven.bethard at gmail.com  Tue May 31 12:10:11 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Tue, 31 May 2005 10:10:11 -0600
Subject: how to convert string to list or tuple
In-Reply-To: <Xns966761E4E4665duncanbooth@127.0.0.1>
References: <d74dbl$h91$1@news.yaako.com>
	<mailman.131.1117109560.18027.python-list@python.org>
	<1117383768.099922.308760@o13g2000cwo.googlegroups.com>
	<Xns9665B54CBAA38duncanbooth@127.0.0.1>
	<KpKdnfZemtzivwffRVn-sA@comcast.com>
	<Xns96666DCDF2C19duncanbooth@127.0.0.1>
	<WvWdneCvReWQowbfRVn-sw@comcast.com>
	<Xns966761E4E4665duncanbooth@127.0.0.1>
Message-ID: <YZadnavn1en-EQHfRVn-qQ@comcast.com>

Duncan Booth wrote:
> e.g. Assuming that the MyDatabase class does something nasty to a file:
> 
>>>>class MyDatabase(object):
> 
>     def __init__(self, filename):
>         self.filename = filename
>     def initialise(self):
>         print "Splat %s" % self.filename
> 
>>>>eval('''[ cls for cls in {}.__class__.__bases__[0].__subclasses__()
> 
>         if 'MyDatabase' in `cls` 
>         ][0]('importantfile').initialise()''', dict(__builtins__=None))
> Splat importantfile

Interestingly, I don't seem to be able to create a file object as a 
class attribute in restricted mode:

py> class C(object):
...     def __init__(self):
...         self.f = file('temp.txt', 'w')
...
py> eval('''[ cls for cls in {}.__class__.__bases__[0].__subclasses__() 
if cls.__name__ == 'C'][0]().f.write("stuff")''', dict(__builtins__=None))
Traceback (most recent call last):
   File "<interactive input>", line 1, in ?
   File "<string>", line 0, in ?
AttributeError: 'C' object has no attribute 'f'
py> eval('''[ cls for cls in {}.__class__.__bases__[0].__subclasses__() 
if cls.__name__ == 'C'][0]().__dict__''', dict(__builtins__=None))
{}

I don't get an error for calling the file constructor, but the f 
attribute is never set AFAICT.

STeVe


From heiko.wundram at ceosg.de  Mon May  2 08:55:29 2005
From: heiko.wundram at ceosg.de (Heiko Wundram)
Date: Mon, 2 May 2005 14:55:29 +0200
Subject: Python sockets and recvmsg
In-Reply-To: <200505021450.10730.heiko.wundram@ceosg.de>
References: <200505021450.10730.heiko.wundram@ceosg.de>
Message-ID: <200505021455.29288.heiko.wundram@ceosg.de>

On Monday 02 May 2005 14:50, Heiko Wundram wrote:
> How would you go about implementing this functionality? I don't think that
> a standard recv() does what I want...

Okay, looking at google would've been appropriate... There's Python Eunuchs... 
I wonder why this hasn't made it into the standard Python distribution, 
nevertheless...

Would there be interest in a patch?

--- Heiko.


From dlegault at vantpoint.com  Tue May 24 15:19:06 2005
From: dlegault at vantpoint.com (David)
Date: Tue, 24 May 2005 19:19:06 +0000 (UTC)
Subject: Linuz Python Module using PythonC/ API
Message-ID: <loom.20050524T211343-246@post.gmane.org>

I have this error message poping up when I try to import a module I made in C
using the Python/C API. Everything compiles like a charm.

Gives me this error message :

Traceback (most recent call last):
  File "mod_test.py", line 4, in ?
    import utm
ImportError: dynamic module does not define init function (initutm)

but the "initutm" function is there.

Running on Fedora Core 3.

Thanx 
David

P.S Other question is there a command to know what export symbols a .so library
has ?

Relevant files below.

utmmodule.c
------------------
#include <Python.h>

#include "utm.h"


PyMODINIT_FUNC initutm(void);

static PyObject * utm_utm_to_ll(PyObject * self, PyObject * args);

static PyObject * utm_ll_to_utm(PyObject * self, PyObject * args);

static PyObject * utm_zone(PyObject * self, PyObject * args);

static PyObject * utm_grid(PyObject * self, PyObject * args);

static PyObject * utm_trans_list(PyObject * self, PyObject * args);

static PyObject * utm_transform(PyObject * self, PyObject * args);



/****************************************/

/*! \var static PyObject * UTMError

    \brief UTM Python Module error handling object

*/

/****************************************/

static PyObject * UTMError;



/****************************************/

/*! \var static PyMethodDef UTMMethods 

    \brief UTM Python Module function list

*/

/****************************************/

static PyMethodDef UTMMethods[] = {

  

  {"utm_to_ll",  utm_utm_to_ll, METH_VARARGS, "Converts UTM coordinates to
Lat/Long using the input UTM zone number and letter and tranformation."},

  {"ll_to_utm",  utm_ll_to_utm, METH_VARARGS, "Converts Lat/Long coordinates to
UTM using the input transformation."},

  {"zone",  utm_zone, METH_VARARGS, "Returns the UTM longitude zone number."},

  {"grid",  utm_grid, METH_VARARGS, "Returns the UTM latitude zone letter (C to
X) - omiting chars I and O.\nReturns Z if Latitude value out of UTM bounds 84N -
80S."},

  {"trans_list",  utm_trans_list, METH_VARARGS, "Returns the list of available
ellipsoid transformations in a list."},  

  {"transform",  utm_transform, METH_VARARGS, "Returns the tranform index based
on the transform type string, EX: 'WGS 84' returns index 29"},  

  {NULL, NULL, 0, NULL}        /* Sentinel */

};



/****************************************/

/*! \fn PyMODINIT_FUNC initutm(void)

    \brief Python Module __init__() function



    This function is called when the module is loaded by Python. It creates a
mapping of the

    python module commands linked to their C counterpart in the DLL/SO module.
It also creates

    an error handling Python object (UTMError).

*/

/****************************************/



PyMODINIT_FUNC initutm(void) {

  

  PyObject *m;

  

  m = Py_InitModule( "utm", UTMMethods );

  

  UTMError = PyErr_NewException( "utm.error", NULL, NULL );

  Py_INCREF( UTMError );

  PyModule_AddObject( m, "error", UTMError );

}
....
------------------

makefile important lines
-------------------
CC=g++

CFLAGS=-Wall -I/usr/local/src/Python-2.3.5/Include
-L/usr/local/src/Python-2.3.5/Objects -L/usr/local/src/Python-2.3.5

LDFLAGS=



all: main



main: utm.o utmmodule.o

	$(CC) $(CFLAGS) -shared -fPIC -Xlinker -export-dynamic -lpython2.3 -o utm.so

-------------------



From sjmachin at lexicon.net  Tue May 17 19:59:45 2005
From: sjmachin at lexicon.net (John Machin)
Date: Wed, 18 May 2005 09:59:45 +1000
Subject: Representing ambiguity in datetime?
References: <mailman.121.1116368416.8733.python-list@python.org>
Message-ID: <5hvk81prupnpinq4ucspsikdqns5rmcaf0@4ax.com>

On Tue, 17 May 2005 17:38:30 -0500, Terry Hancock
<hancock at anansispaceworks.com> wrote:

>What do you do when a date or time is
>incompletely specified?  ISTM, that as it is, there is no
>formal way to store this --- you have to guess, and there's
>no way to indicate that the guess is different from solid
>information.  As a result, I have sometimes had to abandon
>datetime, even though it seemed like the logical choice for
>representing data.
>
>E.g. I might have information like "this paper was published
>in May 1997".  There's no way to write that with datetime,
>is there?  Even if I just use the "date" object instead of 
>datetime, I still have to actually specify something like 
>May 1, 1997 --- fabricating data, which is frequently
>undesireable (later on, I might find information saying that
>it was actually published May 23, 1997 and I might want
>to update the earlier one, or simply evaluate them as 
>"equal" since they are, to within the precision given --- 
>for example, I might be trying to decide that two database
>entries are really duplicate references to the same paper).
>
>I know that this is somewhat theoretically stated, but I 
>have run into to concrete problems along the lines of
>the above.
>
>I'd say this is analogous to how you might use "None"
>rather than "0" to represent an integer if you don't know
>it's value (rather than knowing that it is zero).  ISTM, you
>ought to be able to specify a date as, e.g.:
>
>d = datetime.date(2005, 5, None)
>
>I realize there might be some complexity with deciding
>how to handle datestamp math, but as this situation
>occurs frequently in real life, it seems like it shouldn't
>be avoided.
>
>How do other people deal with this kind of problem?

Mostly, badly :-(

Real-life example: due to war-time disruption etc, in some countries
it is common enough to find that the date of birth of someone born in
the 1940s is not known precisely. E.g. on the Hong Kong identity card,
it is possible to find only the year and month of birth, and sometimes
even only the year. Depending on the purpose, legislation and
convention will take the first day of the vague period or the last day
when a calculation is required. Badly == entering into a database the
"exact" date that was used for the purpose du jour, with no indication
that the source was vague. Consequently a person can have DOB recorded
as 1945-01-01 on one database and 1945-12-31 on another.

Suggested approach in Python (sketch): Don't try to get the datetime
module to solve the problem. Define a fuzzydate class. Internal
representation: I'd suggest earliest possible date and latest possible
date. That way you have valid date instances for doing date
arithmetic. May have different constructors depending on how the
incoming vagueness is specified. 

HTH,
John


From smap at scarlet.be  Mon May 30 05:16:42 2005
From: smap at scarlet.be (bart)
Date: 30 May 2005 02:16:42 -0700
Subject: Design problem, call function from HTML?
Message-ID: <3be7534e.0505300116.3dbba49@posting.google.com>

This is the python way i have.

imgref = 'image.py'
out.write('<img src="%s">'
                  % (imgref)


in ASP.NET u can do something like this

<img src="<%# image() %>">

//allready loaded data
data

image(){
  return data.img
}

Is there any remote possibility u can pulloff the same in python? Now
i have to process my data to display page and do it again to generate
my image (execute same code twice).

One solution would be to save the image to harddisk and then load it.
But rather keep it clean as return value.


From ivoras at fer.hr  Tue May  3 08:14:03 2005
From: ivoras at fer.hr (Ivan Voras)
Date: Tue, 03 May 2005 14:14:03 +0200
Subject: So many things that need to be decided....
In-Reply-To: <G3Ade.1022$fF6.12717@news1.mts.net>
References: <G3Ade.1022$fF6.12717@news1.mts.net>
Message-ID: <d57pvo$rgb$1@bagan.srce.hr>

Heather Stovold wrote:

> I still need to decide on a database........   I've really only used Access,
> and my SQL skills aren't that great.  It would also need to be free....

As many others have suggested, if you're comming from Access, SQLite or 
Gadfly would probably be good starting points, because

- they both store data as files in the filesystem (as Access does), so 
you don't have to maintain a database server
- they are easy to setup and use, there's lots of documentation on them.

My personal suggestion would be to go with SQLite because it's a 
standard database which can be used with large number of other tools and 
languages.

Keep in mind that such simple database systems have limits. Mostly, 
you'll encounter performance problems if you have multiple users writing 
data to the database at the same time (so if you're into web 
applications or business systems, use something more powerful, like 
PostgreSQL or Firebird).

As for report generating features, I don't know of any free report 
generators that are as easy to use like the one in Access (e.g. 
point-and-click). Same goes for GUI tools.


From aurora00 at gmail.com  Thu May 26 15:37:37 2005
From: aurora00 at gmail.com (aurora00 at gmail.com)
Date: 26 May 2005 12:37:37 -0700
Subject: win32clipboard.GetClipboardData() return string with null
	characters
References: <op.src74qnv6yt6e7@news.cisco.com>
	<4295a2ad$1_2@spool9-west.superfeed.net>
Message-ID: <1117136257.782112.41870@g43g2000cwa.googlegroups.com>

It appears to me that some applications put extra garbage data into the
clipboard. win32clipboard may have faithfully returning all of them.

I use this application to show the clipboard content:



import win32clipboard, win32con
def getWinClipboardText():
    win32clipboard.OpenClipboard()
    d=win32clipboard.GetClipboardData(win32con.CF_TEXT)
    win32clipboard.CloseClipboard()
    return d

print getWinClipboardText().encode('string_escape')



For example, copying the Python banner from the windows console gets me
this output. Notice the \x00 and garbage characters after that.

----------------------------------------------------------
Python 2.4.1 (#65, Mar 30 2005, 09:13:57) [MSC v.1310 32 bit (Intel)]
on win32\r\nType "help", "copyright", "credits" or "lic
ense" for more information.\x00\n      ??
----------------------------------------------------------


Some applications appear to put clean data in the clipboard always:
Opera, Putty, Outlook

Some applications appear to include \0 and other crap:
cmd.exe, powerpoint, EmEditor.exe

When I paste, it never appears to be any problem that there maybe
garbage characters in the clipboard. Guess most C based program
correctly null terminates the string.



From theller at python.net  Wed May  4 09:27:10 2005
From: theller at python.net (Thomas Heller)
Date: Wed, 04 May 2005 15:27:10 +0200
Subject: py2exe and library.zip
References: <mailman.76.1115095357.6583.python-list@python.org>
Message-ID: <wtqfm89d.fsf@python.net>

Timothy Smith <timothy at open-networks.net> writes:

> is it possible instead of py2exe putting all library's in a zip file,
> to just put them in a sub dir?

You can subclass the build_exe command (the extending sample shows how
to do this, althoutgh for a different purpose), and copy the files into
a sub dir instead of building an archive.  You still have to make sure
that your exe has this directory on sys.path.

Thomas


From qwweeeit at yahoo.it  Thu May 12 10:59:10 2005
From: qwweeeit at yahoo.it (qwweeeit at yahoo.it)
Date: 12 May 2005 07:59:10 -0700
Subject: Importing modules
References: <1115816747.292060.292200@o13g2000cwo.googlegroups.com>
	<1115835958.080135.290900@o13g2000cwo.googlegroups.com>
	<mailman.460.1115905629.29826.python-list@python.org>
Message-ID: <1115909950.205983.224430@o13g2000cwo.googlegroups.com>

Hi Fredrik,
thank you for saying that I am
> ... posting silly assertions.
I didn't born " Python expert", and I am hardly trying to learn
something.
I don't like classes but this assertion (silly... I agree) is due to
the fact that "I don't understand them well" (I hope to change mind in
a near future).
Another item (for me...) difficult, is "import modules", and "plenty of
information" (as you said) does not help me much: the mechanism of
variable visibility and namespaces is not clear to me. It will be
enough an example of the various type of imports and they difference in
terms of namespaces or, better, of something you can see on your
monitor, or print like, for example,  a dictionary.
As you can see from my replay to Steve Holden, I have abandoned my
project on flowcharting. I must study (as you adviced me)...
Bye.



From exarkun at divmod.com  Fri May 13 12:32:27 2005
From: exarkun at divmod.com (Jp Calderone)
Date: Fri, 13 May 2005 16:32:27 GMT
Subject: stop a thread safetely
In-Reply-To: 0
Message-ID: <20050513163227.15422.702921588.divmod.quotient.36926@ohm>

On Fri, 13 May 2005 16:47:34 +0200, Zunbeltz Izaola <zunbeltz at gmail.com> wrote:
>On Fri, 13 May 2005 09:10:13 -0400, Peter Hansen wrote:
>
>>
>> How did you intend to stop the thread in a manner which might be unsafe?
>> (Hint, unless you're doing something unusual, you can't.)
>>
>
>I have a threaded object (Mythread). It checks if want_thread
>variable is True to return. The problem is that this object
>execute a function that is a tcp comunication
>

  You cannot exit a thread except by exiting the entire process or by having the function it is running terminate (either by returning or raising an exception).

  Instead of using threads for network communication, you may want to look into these:

    http://www.twistedmatrix.com/

    http://python.org/doc/lib/module-asyncore.html

    http://www.nightmare.com/medusa/

  Hope this helps,

  Jp


From sjmachin at lexicon.net  Sun May 15 19:31:44 2005
From: sjmachin at lexicon.net (John Machin)
Date: 15 May 2005 16:31:44 -0700
Subject: Quick Reference from module doc strings.
In-Reply-To: <mailman.65.1116085574.29328.python-list@python.org>
References: <mailman.65.1116085574.29328.python-list@python.org>
Message-ID: <1116199904.205240.58300@g49g2000cwa.googlegroups.com>

Ron Adam wrote:
> Does anyone have suggestions on how to improve this further?

Not functionally (from me, yet). However if you can bear a stylistic
comment, do read on :-)

>          elif (isinstance(object,str)
>                  or isinstance(object,int)
>                  or isinstance(object,bool)
>                  or isinstance(object,tuple)
>                  or isinstance(object,list)
>                  or isinstance(object,dict)):

Since Python version 2.2, the 2nd arg of isinstance may be a tuple. You
could define this up front, with a meaningful name:

TYPES_WHICH_whatever = (str, int, bool, etc etc)

Cheers,
John



From bronger at physik.rwth-aachen.de  Sat May 21 03:13:19 2005
From: bronger at physik.rwth-aachen.de (Torsten Bronger)
Date: Sat, 21 May 2005 09:13:19 +0200
Subject: first release of PyPy
References: <mailman.264.1116625088.8733.python-list@python.org>
	<1116629407.638782.145950@g47g2000cwa.googlegroups.com>
	<1116644536.741250.249860@g44g2000cwa.googlegroups.com>
	<mailman.279.1116649250.8733.python-list@python.org>
	<1116653460.808204.74460@g43g2000cwa.googlegroups.com>
	<87mzqpytep.fsf@wilson.rwth-aachen.de>
	<7xfywhxerd.fsf@ruckus.brouhaha.com>
Message-ID: <87is1dyru8.fsf@wilson.rwth-aachen.de>

Hall?chen!

Paul Rubin <http://phr.cx at NOSPAM.invalid> writes:

> Torsten Bronger <bronger at physik.rwth-aachen.de> writes:
>
>> Please could somebody explain to us non-CS people why PyPy could
>> have speed features CPython can't have?
>
> Does the one-word answer "compiler" explain enough?

No, just more questions.  ;-)

What's supposed to be compiled?  Only PyPy itself or also the
programs it's "interpreting"?

<http://www.python.org/pycon/dc2004/papers/27/>: "In the next step
    of the project, we will generate C code or machine code from the
    source of Pypy, thereby reducing the speed penalty."

I've been told by so many books and on-line material that Python
cannot be compiled (unless you cheat).  So how is this possible?

Tsch?,
Torsten.

-- 
Torsten Bronger, aquisgrana, europa vetus


From ivoras at _-_fer.hr  Fri May 20 19:19:12 2005
From: ivoras at _-_fer.hr (Ivan Voras)
Date: Sat, 21 May 2005 01:19:12 +0200
Subject: processing a large utf-8 file
Message-ID: <d6lr9l$bis$1@bagan.srce.hr>

Since the .encoding attribute of file objects are read-only, what is the 
proper way to process large utf-8 text files?

I need "bulk" processing (i.e. in blocks - the file is ~ 1GB), but 
reading it in fixed blocks is bound to result in partially-read utf-8 
characters at block boundaries.



From grant at idscape.co.za  Tue May 31 03:12:09 2005
From: grant at idscape.co.za (grant at idscape.co.za)
Date: 31 May 2005 00:12:09 -0700
Subject: struct unpack newline
In-Reply-To: <d7h1k6$1ns$02$1@news.t-online.com>
References: <1117189007.980813.182830@g14g2000cwa.googlegroups.com>
	<mailman.170.1117189924.18027.python-list@python.org>
	<1117521795.897167.293120@g49g2000cwa.googlegroups.com>
	<d7h1k6$1ns$02$1@news.t-online.com>
Message-ID: <1117523529.600780.18550@f14g2000cwb.googlegroups.com>

Good point. Hadn't thouhgt of that.

Thanks
Grant



From alainpoint at yahoo.fr  Tue May 17 11:31:55 2005
From: alainpoint at yahoo.fr (alainpoint at yahoo.fr)
Date: 17 May 2005 08:31:55 -0700
Subject: Bug in Elementtree/Expat
In-Reply-To: <mailman.103.1116342265.8733.python-list@python.org>
References: <1116331113.765085.281490@g47g2000cwa.googlegroups.com>
	<mailman.103.1116342265.8733.python-list@python.org>
Message-ID: <1116343915.036584.32160@g47g2000cwa.googlegroups.com>


Fredrik Lundh wrote:
>
> adding
>
>     xmlns:xlink="http://www.w3.org/1999/xlink"
>
> to the "svg" element should make the problem go away.


Thanks for the tip. It indeed solves the problem.
Most examples in the book do not include such a declaration and yet are
properly rendered by Internet Explorer.
Is it mandatory and why is it that Expat crashes on it?

Alain



From fuzzyman at gmail.com  Tue May  3 09:57:48 2005
From: fuzzyman at gmail.com (Fuzzyman)
Date: 3 May 2005 06:57:48 -0700
Subject: sorting list and then return the index of the sorted item
In-Reply-To: <1115127433.984686.99060@f14g2000cwb.googlegroups.com>
References: <1115127433.984686.99060@f14g2000cwb.googlegroups.com>
Message-ID: <1115128668.633320.285090@f14g2000cwb.googlegroups.com>

I'd map the values to their index in a dictionary, then sort the list,
and from the sorted list fetch all the indexes from the dictionary.
Something like :

>>> a = [2,3,1,4,5]
>>> b = list(a)
>>> b.sort()
>>> b
[1, 2, 3, 4, 5]
>>> indexDict = dict([ (value, index) for index, value in
enumerate(a)])
>>> [indexDict[entry] for entry in b]
[2, 0, 1, 3, 4]

HTH

The code above uses enumerate, to shortcut getting the index. There may
be other shortcuts possible.

Regards,

Fuzzy
http://www.voidspace.org.uk/python



From wongjoekmeu at yahoo.com  Wed May 25 10:03:54 2005
From: wongjoekmeu at yahoo.com (wongjoekmeu at yahoo.com)
Date: 25 May 2005 07:03:54 -0700
Subject: quiver vector plot problem
Message-ID: <1117029834.171512.323900@g14g2000cwa.googlegroups.com>

Hello All,
I am using matplotlib0.8. With the quiver function I
have tried to plot a vector. However for some reason I
do not get what I want.
I have problem with the S (according the comments a
scaling parameter) parameter. When I set it to 0 (S = 0
), I get the correct vector with correct direction,
however the arrow head is not present. When I set it to
2 (S= 2) for instance, I get a scaling which I dont
understand. The direction of my vector has changed.
This is something which I do not want. I was wondering
if this is a bug or whether it is my misunderstanding
of this scaling parameter. What I want is no scaling
(S=0) but then an arrow with an arrow head. A scaling
might be useful in the future but then I think the
direction should not changed, since a vector is
characterized by its direction. Many thanks in advance
for whoever that can help me out with this problem.
Here below you can see my python code.

Robert
------------------------------
from pylab import *

X = array([ [3] ])
Y = array([ [3] ])

print "X = ",X
print "Y = ",Y

U = array([ [1] ])
V = array([ [2] ])

print "U = ",U
print "V = ",V
grid(True)
quiver(X, Y, U, V, 2.0, color=None, width=1.0)
axis([0,6,0,6])

show()
-------------------------



From __peter__ at web.de  Thu May 19 16:21:34 2005
From: __peter__ at web.de (Peter Otten)
Date: Thu, 19 May 2005 22:21:34 +0200
Subject: Convert from numbers to letters
References: <1116511005.900715.107260@o13g2000cwo.googlegroups.com>
	<mailman.209.1116513780.8733.python-list@python.org>
	<1116528750.285895.27720@f14g2000cwb.googlegroups.com>
	<mailman.223.1116529228.8733.python-list@python.org>
	<1116530403.328825.216120@z14g2000cwz.googlegroups.com>
	<mailman.225.1116531601.8733.python-list@python.org>
	<d6iqe5$rgt$01$1@news.t-online.com>
	<mailman.226.1116532960.8733.python-list@python.org>
	<d6is7u$7tm$04$1@news.t-online.com>
Message-ID: <d6isek$7tm$04$2@news.t-online.com>

Peter Otten wrote:

[Something stupid]

You are right. I finally got it.

Peter





From rkern at ucsd.edu  Sat May  7 09:45:32 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Sat, 07 May 2005 06:45:32 -0700
Subject: Ask for a tool to protect my .pyc file :)
In-Reply-To: <BAY24-F22527E1FA6EF0916C8A599951C0@phx.gbl>
References: <BAY24-F22527E1FA6EF0916C8A599951C0@phx.gbl>
Message-ID: <d5igcs$lf5$1@sea.gmane.org>

Lily Kakm wrote:
> when I distribute my software, I will give the users .pyc file (maybe I can 
> use py2exe, but I think there's no essential different), because I don't 
> like them to know my source code.
> 
> But actually, through .pyc file is not so directly as .py file, but the user 
> can also easily guest the detail of the program. Because in the .pyc file, 
> the name of the variables are exist.
> 
> I ask you for a tool. Maybe it can hide the name of the variables.

That's not going to provide you any security. Any competent attacker 
won't care what you name the variables.

If you want real security, don't distribute your code. Expose the 
critical parts as a web service (or similar) instead.

If you want pretend security, .pycs or py2exe executables are enough.

> For example:
> 
> good_node = 100
> bad_node = 500 - good_node
> 
> Using this tool, it can be like this :
> 
> xxxxxxxxxx = 100
> xxxxxxxxxy = 500 - xxxxxxxxxx
> 
> It has the same function, but it can not easily be seen by the users.

Reads just fine to me.

> Do you know where to download a tool like this.

You ask an open source software community for a free tool to keep your 
source proprietary? High expectations.

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From martin at v.loewis.de  Tue May 24 15:23:16 2005
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Tue, 24 May 2005 21:23:16 +0200
Subject: python24.zip
In-Reply-To: <4292600E.2040801@jessikat.fsnet.co.uk>
References: <mailman.249.1116595092.8733.python-list@python.org>	<428e0cc3$0$29954$9b622d9e@news.freenet.de>	<x7hdgw2zqi.fsf@handshake.de>	<428faddd$0$26322$9b622d9e@news.freenet.de>	<x7vf5bku5d.fsf@handshake.de>	<4290dc79$0$9989$9b622d9e@news.freenet.de>	<4291ea5b$1@nntp0.pdx.net>	<42921399.2050302@v.loewis.de>	<mailman.36.1116872480.18027.python-list@python.org>
	<mailman.39.1116881236.18027.python-list@python.org>
	<4292600E.2040801@jessikat.fsnet.co.uk>
Message-ID: <42937F24.7030500@v.loewis.de>

Robin Becker wrote:

> if the importers are tested statically how does a filesystem path ever
> manage
> to get back into the loop if it was ever found missing? In other words if
> things (eg python24.zip) are found not importable/usable in one pass how do
> they get reinstated?

I think (but see the code yourself) that only the successful importers
are cached.

Regards,
Martin


From dave.brueck at gmail.com  Tue May 17 10:22:39 2005
From: dave.brueck at gmail.com (dave.brueck at gmail.com)
Date: 17 May 2005 07:22:39 -0700
Subject: Windows distribution suggestions?
References: <7x3bsmfjdg.fsf_-_@ruckus.brouhaha.com>
	<7xekc6p9tp.fsf@ruckus.brouhaha.com>
	<4289ACD8.2070207@open-networks.net>
	<mailman.87.1116322349.8733.python-list@python.org>
	<7x8y2ep1cw.fsf@ruckus.brouhaha.com>
Message-ID: <1116339759.046792.300940@o13g2000cwo.googlegroups.com>

>> One tip: make sure your three top-level scripts are as empty as
>> possible: just import some other module and call a function. All
>> your active code is then in some library.zip shared between the
>> three, and you need never change alice.exe, bob.exe, and carol.exe
>
> I think I understand what you're saying and it sounds like a very
> good idea.  Thanks.

To elaborate, this approach has worked well for me when I've needed to
release multiple .exe's together:

First make a "dispatching" module like this (call it run.py)

if __name__ == '__main__':
  app = sys.argv[0].lower()
  if app.find('alice') != -1:
    import alice
    alice.main()
  elif app.find('bob') != -1:
    import bob
    bob.main()
  etc...

Next, use py2exe to create an executable for run.py, and then copy
run.exe to alice.exe, bob.exe, and carol.exe (the resulting .exe's will
be very small). The reasoning behind this is that this way only one
copy of all the DLLs, Python std library, and so forth need to be
included in your release.

And to second everyone else's suggestions: NSIS and InnoSetup are
great, free, and powerful. They have all the features you need to
automatically copy your files to the "proper" location on disk, create
desktop icons, and create an uninstaller entry - you'll just write a
small installation script telling what features you'd like to take
advantage of, but they figure out all the details and combine your
application files into a standalone installer (your app.exe).

It'll take a little work to get this all straightened out the first
time, but after that you can have a single build/release script so it's
painless from then on.

And for updates: the least problematic approach is to just release the
whole thing each time. IIRC, InnoSetup (and probably NSIS) include a
feature where you can detect if your app is running when the user tries
to install an update and you can prompt the user to shut down first.
You'd need to use ctypes or pywin32 to make your app detectable that
way, but it's only 1 or 2 lines of code. But, lemme know if you want to
go the route of updating only portions of the app - I've gone that
route too but it takes more work and has its own set of problems; I
might be able to save you a few headaches.

-Dave



From pdemb at gazeta.pl  Wed May 18 12:41:37 2005
From: pdemb at gazeta.pl (Peter Dembinski)
Date: Wed, 18 May 2005 18:41:37 +0200
Subject: Is Python suitable for a huge, enterprise size app?
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>
	<1116432325.497438.64580@g49g2000cwa.googlegroups.com>
Message-ID: <87br784hby.fsf@hector.domek>

"keirr" <keir.robinson at gmail.com> writes:

[snap]

> I wouldn't, especially[1] if your thousands of business objects get
> allocated/deallocated as the system runs.  Currently python's memory
> usage can grow rapidly (from the perspective of the o/s) when large
> numbers of objects are repeatedly created and freed.

Isn't it true that in recent Python releases, one may replace the
default GC with custom one?

> On the other hand, you could use a combination of python and C++
> (perhaps using boost's python wrapping code).  The ability to create
> C/C++ modules is a "get out of jail free card" - if you did manage
> to convince your company to go with python, and it fell short in
> some area, a custom C module could be a handy trick.

In fact, it is not a trick -- combining C with Python is fairly
approved way of speeding up the app :)

-- 
http://www.peter.dembinski.prv.pl


From yael at gmx.net  Wed May 11 11:18:27 2005
From: yael at gmx.net (Thomas Pfaff)
Date: Wed, 11 May 2005 17:18:27 +0200
Subject: working directory for debugging in pythonwin
Message-ID: <3eem0kF2ngvjU1@individual.net>

Hello all,

I started using the nice Pythonwin IDE together with Python 2.3 (I have
come to prefer its editor to IDLE).
My problem is, that when I want to run a script in the debugger, I can
give the script name and arguments, but I can't tell it in which
directory it should run.

I googled this group but didn't find anything helpful so far.

I could use some os.chdir in my code, but that's ugly and I neither want
to copy the script around to the places where I would like to test it.

Any suggestions?

Thanks in advance


Thomas


From mwm at mired.org  Thu May 12 00:56:44 2005
From: mwm at mired.org (Mike Meyer)
Date: Wed, 11 May 2005 23:56:44 -0500
Subject: HELP Printing with wxPython
References: <d5t4oj$sct$1@carabinieri.cs.interbusiness.it>
	<mailman.357.1115820240.29826.python-list@python.org>
Message-ID: <86ll6lkpo3.fsf@guru.mired.org>

James Carroll <mrmaple at gmail.com> writes:
> If you are doing this just for yourself, and you know you have a
> printer that will really print just the plain text when you send it
> plain text (like a dot matrix printer from the early 90s) then you can
> probably open the printer device  and send it text.  Under windows you
> can try opening LPT1  or on unix it's probably /dev/lpr or something
> like that.

Under Unix, you shouldn't be able to open the line printer, whether
it's /dev/lpr or /dev/lpt0 or whater. You shouldn't have
permission.

Instead, as was suggested earlier, use the "lpr" command and send it
the text/data on standard input. Any reasonably managed Unix system
should be able to handle a fair range of graphics formats, though
postscript is preferred.

        <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From peter at engcorp.com  Mon May 16 04:21:02 2005
From: peter at engcorp.com (Peter Hansen)
Date: Mon, 16 May 2005 04:21:02 -0400
Subject: The world is really unstable these days......
In-Reply-To: <mailman.17.1116207868.8733.python-list@python.org>
References: <mailman.17.1116207868.8733.python-list@python.org>
Message-ID: <AZidnT0rWqZxyhXfRVn-qw@powergate.ca>

Delaney, Timothy C (Timothy) wrote:
> Absolutely. Another example of where these things can mess with
> Spambayes is people replying to XL and correcting his horrendous
> troll-posts. It makes it really hard for Spambayes to determine that
> *anything* coming from XL is spam.

Ouch.  Point taken.


From Sebastien.Boisgerault at gmail.com  Sun May 29 08:11:05 2005
From: Sebastien.Boisgerault at gmail.com (=?iso-8859-1?q?S=E9bastien_Boisg=E9rault?=)
Date: 29 May 2005 05:11:05 -0700
Subject: Trying to understand pickle.loads withou class declaration
In-Reply-To: <ja3me.3481$4N2.2982@newssvr30.news.prodigy.com>
References: <3L2me.3465$3D6.2238@newssvr12.news.prodigy.com>
	<ja3me.3481$4N2.2982@newssvr30.news.prodigy.com>
Message-ID: <1117368665.235350.54450@g14g2000cwa.googlegroups.com>

Even

    class A:
        pass

should do the trick. Only the instance attributes are saved by a
pickle,
not the methods or the class itself. The unpickler tries to merge the
saved data and the class/method info that is not saved to recreate
the fully functional instance... but of course this info should still
be available. The unpickler will even import the class from the
appropriate module if necessary.

If you want your unpickler to manufacture a class for you when
it is not available, you may use the gnosis xml pickler with the
appropriate security ("paranoia") level.

http://gnosis.cx/download/gnosis/xml/pickle/

Cheers,

Seb



From paul at boddie.org.uk  Thu May 26 04:38:48 2005
From: paul at boddie.org.uk (Paul Boddie)
Date: 26 May 2005 01:38:48 -0700
Subject: uploading files to a webdav SSL enabled server
References: <d720om$3cr$1@solaris.cc.vt.edu>
Message-ID: <5339b60d.0505260038.5da826de@posting.google.com>

rbt <rbt at athop1.ath.vt.edu> wrote in message news:<d720om$3cr$1 at solaris.cc.vt.edu>...
> Has anyone used pure python to upload files to a webdav server over SSL? 
>   I have no control over the server. I can access it with all of the 
> various webdav GUIs such as Konqueror, Cadaver, etc. by using a URL like 
> this:
> 
> webdavs://dav.hostname.com/user_name/uploads

I suppose it would be nice if urllib(2) supported WebDAV in this way,
but you should still be able to use httplib to interact with the
server. Uploading in WebDAV is just a matter of doing an HTTP PUT if I
recall correctly, and I don't think that any of the special status
codes or responses are involved; in this sense WebDAV overlaps with
traditional HTTP.

[...]

> If urllib2 supported webdav, I think I'd be in business, but it doesn't. 
> Any one who can provide pointers on this? I've googled around to no 
> avail. I've began playing with Perl's HTTP::DAV and somone reccomended 
> PHP's curl functions as well, but I wanted to try this in Python first.

Searching for "DAV Python" revealed the following projects:

http://www.lyra.org/greg/python/
http://cvs.infrae.com/packages/pydavclient/dav/

Really it's just a matter of talking HTTP to a server and parsing the
special messages that are returned for certain request methods, but
you may not even need to do that if you're just uploading files.

Paul


From anonymousnerd at gmail.com  Fri May 20 10:40:42 2005
From: anonymousnerd at gmail.com (anonymousnerd at gmail.com)
Date: 20 May 2005 07:40:42 -0700
Subject: How come print cannot be assigned to a variable?
Message-ID: <1116600042.622872.49850@g14g2000cwa.googlegroups.com>

Hi all,
    In Python, some functions can be assigned to variables like this:
        length=len
Why is it that print cannot be assigned to a variable like this? (A
syntax error is declared.)

  Thanks,

 Vaibhav



From luis_lupe2XXX at netvisaoXXX.pt  Thu May 26 18:11:50 2005
From: luis_lupe2XXX at netvisaoXXX.pt (Luis P. Mendes)
Date: Thu, 26 May 2005 23:11:50 +0100
Subject: Pyrex: step in for loop
In-Reply-To: <86oeaxwsmy.fsf@guru.mired.org>
References: <3fmtshF8hj7vU1@individual.net> <86oeaxwsmy.fsf@guru.mired.org>
Message-ID: <3fmvt3F8l7f8U1@individual.net>

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1


| so it's
|
| for i in range(80000, 140000, 10000): ...
|
|     <mike

For what I've read, for i in range is slower than the other for
construct used by Pyrex:

for i from iMin <= i < iMax:

My question had to do with this new expression.  How can I introduce a
step there.

I am able to circumvent the problem passing a reduced range for i, let's
say iMin = 8, iMax = 14 when calling the pyrex module and then, after
the for statement:
i = i * 10000
and it works as it is intended to.


But, if there is a way to introduce the step  in the 'for i from iMin <=
i < iMax:' expression, I would like to know.

Thank you for your reply.

Luis
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.4 (GNU/Linux)
Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org

iD8DBQFClkmlHn4UHCY8rB8RAlUqAKCxSEkEKVIcoshTwmL7GQNK6d/j0wCgoC67
jOhuXQpnDt23SEAM9huKTQA=
=8XO0
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From jean_seb at videotron.ca  Mon May 16 16:20:44 2005
From: jean_seb at videotron.ca (=?ISO-8859-1?Q?Jean-S=E9bastien_Guay?=)
Date: Mon, 16 May 2005 16:20:44 -0400
Subject: Problem listing services with wmi
In-Reply-To: <4288FDF0.7040007@syscononline.com>
References: <mailman.59.1116271963.8733.python-list@python.org>
	<4288FDF0.7040007@syscononline.com>
Message-ID: <4289009C.7020104@videotron.ca>

Hello Larry,

>Might not be the problem but try without the leading
>spaces before your method calls.
>
>for s in c.Win32_Service ():
>
>should be
>
>for s in c.Win32_Service():
>  
>

No change. For reference, the reason I know it's the c.Win32_Service() 
call that's throwing the exception is that if I try to run this :

import wmi
import pythoncom

pythoncom.CoInitialize()
c = wmi.WMI()
services = c.Win32_Service()
for s in services :
  print s.Caption, s.State

the exception gets thrown on the "services = ..." line.

Out of curiosity, is there any reason why whitespace between the method 
name and parameter list parentheses isn't good? Because the code I 
posted before was copy-pasted from Tim Golden's site 
(http://tgolden.sc.sabren.com/python/wmi.html) and the spaces were there.

Thanks,

J-S

-- 
___________________________________________
Jean-S?bastien Guay   jean_seb at videotron.ca
             http://whitestar02.webhop.org/



From nav+posts at bandersnatch.org  Tue May  3 11:19:08 2005
From: nav+posts at bandersnatch.org (Nick Vargish)
Date: 03 May 2005 11:19:08 -0400
Subject: Whats the best Python Book for me
References: <zQade.1185052$Xk.1184944@pd7tw3no>
Message-ID: <87oebsgwwj.fsf@localhost.localdomain>

I would recommend starting with the official tutorial to get a feel
for the nuts-and-bolts syntax of Python. Once you've worked your way
through that (probably not more than an afternoon), pick up a copy of
the Python Cookbook. Since you're an experienced programmer, I think
the Cookbook will help you figure out how Python programmers solve
typical (and sometimes not-so-typical) real-world problems.

Nick

-- 
# sigmask  (lambda deprecation version) 20041028 || feed this to a python
print ''.join([chr(ord(x)-1) for x in 'Ojdl!Wbshjti!=ojdlAwbshjti/psh?'])


From steve.horsley at gmail.com  Sun May 15 16:49:07 2005
From: steve.horsley at gmail.com (Steve Horsley)
Date: Sun, 15 May 2005 21:49:07 +0100
Subject: Mandrake 10.1 and Python 2.3.4
In-Reply-To: <1116172742.477298.116930@g14g2000cwa.googlegroups.com>
References: <AsGhe.3663$E7.3600@news-server.bigpond.net.au>
	<1116172742.477298.116930@g14g2000cwa.googlegroups.com>
Message-ID: <d68cdb$cd1$1@news.freedom2surf.net>

qwweeeit at yahoo.it wrote:
> Hi Joal,
> I can only tell you that in my Linux Mandrake 10.1 (Community Edition),
> all is ok:
> Python 2.3.4 (#2, Aug 19 2004, 15:49:40)
> [GCC 3.4.1 (Mandrakelinux (Alpha 3.4.1-3mdk)] on linux2
> Type "help", "copyright", "credits" or "license" for more information.
> 
>>>>import site
>>>>dir (site)
> 
> ['_Helper', '_Printer', '__builtin__', '__builtins__', '__doc__',
> '__file__', '__name__', '_dirs_in_sys_path', '_init_pathinfo', '_test',
> 'addpackage', 'addsitedir', 'encoding', 'here', 'makepath', 'os',
> 'prefixes', 'sitedirs', 'sys']
> 
> This can't exclude that the error is in Mandrake's site (if you have
> the Official Edition),  but I can't help you further because I am not
> an expert.
> Bye.
> 

Likewise, 10.1 official (powerpack) is OK:

[steve at StevesPC steve]$ cat /proc/version
Linux version 2.6.8.1-12mdk (quintela at n5.mandrakesoft.com) (gcc 
version 3.4.1 (Mandrakelinux (Alpha 3.4.1-3mdk)) #1 Fri Oct 1 
12:53:41 CEST 2004
[steve at StevesPC steve]$ python
Python 2.3.4 (#2, Aug 19 2004, 15:49:40)
[GCC 3.4.1 (Mandrakelinux (Alpha 3.4.1-3mdk)] on linux2
Type "help", "copyright", "credits" or "license" for more 
information.
 >>> import sys
 >>> dir(sys)
['__displayhook__', '__doc__', '__excepthook__', '__name__', 
'__stderr__', '__stdin__', '__stdout__', '_getframe', 
'api_version', 'arch', 'argv', 'builtin_module_names', 
'byteorder', 'call_tracing', 'callstats', 'copyright', 
'displayhook', 'exc_clear', 'exc_info', 'exc_type', 'excepthook', 
'exec_prefix', 'executable', 'exit', 'getcheckinterval', 
'getdefaultencoding', 'getdlopenflags', 'getfilesystemencoding', 
'getrecursionlimit', 'getrefcount', 'hexversion', 
'last_traceback', 'last_type', 'last_value', 'lib', 'maxint', 
'maxunicode', 'meta_path', 'modules', 'path', 'path_hooks', 
'path_importer_cache', 'platform', 'prefix', 'ps1', 'ps2', 
'setcheckinterval', 'setdlopenflags', 'setprofile', 
'setrecursionlimit', 'settrace', 'stderr', 'stdin', 'stdout', 
'version', 'version_info', 'warnoptions']
 >>>


Perhaps you should uninstall and reinstall python, in case a file 
is corrupt.

Steve


From bokr at oz.net  Mon May 16 18:05:18 2005
From: bokr at oz.net (Bengt Richter)
Date: Mon, 16 May 2005 22:05:18 GMT
Subject: Newbie : checking semantics
References: <1115503520.392357.230620@f14g2000cwb.googlegroups.com>
	<87d5rrsh7h.fsf@snobis.de>
	<pan.2005.05.16.13.58.07.671337@dalkescientific.com>
	<d6a997$eh4$1@solaris.cc.vt.edu> <87br7bunsk.fsf@snobis.de>
Message-ID: <42891732.102919961@news.oz.net>

On Mon, 16 May 2005 18:40:43 +0200, Stefan Nobis <snobis at gmx.de> wrote:

>rbt <rbt at athop1.ath.vt.edu> writes:
>
>> True beginners (no programming experience whatsoever) don't have
>> to deal with unlearning stuff such as the bracket plague.
>
>That's true. But they also not very used to give nothing (->
>whitespace) a meaning. I teached quite some beginners and most of
>them had problems to get the indentation right.
>
>At least in the very beginning IMHO it would be useful to
>explicitly end a block with some kind of an end statement.
>
>Meaningful whitespache is not a big problem (as many people seems
>to think) but it's also not very obvious and sometimes it causes
>at least a little bit trouble.
>
Training wheels do no belong as a permanent part of a bicycle, IMO.

If you want to show newbies Python code with block bracketing, please
program up a suitable code viewer for them ;-)

Regards,
Bengt Richter


From steven.bethard at gmail.com  Tue May 10 17:05:46 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Tue, 10 May 2005 15:05:46 -0600
Subject: Merging overlapping spans/ranges
In-Reply-To: <1115754347.563756.103300@f14g2000cwb.googlegroups.com>
References: <4280b31b$0$198$edfadb0f@dread12.news.tele.dk>
	<1115754347.563756.103300@f14g2000cwb.googlegroups.com>
Message-ID: <vO2dndwfKu-yvxzfRVn-uA@comcast.com>

elbertlev at hotmail.com wrote:
> The linear method:
> 
> You create an array - one bool per minute. For one day 24 * 60 entries
> is enough. Spans (Start, End) are in minutes from midnight. Set array
> slots in range(Start, End) to True for each input span.
> 
> Scan the array and find metaspans - contiguous sequences of False.

Yeah, this would basically have been my suggestion.  One implementation:

py> def merge(spans, nbins):
...     bins = [0]*nbins
...     for start, end in spans:
...         for bin in xrange(start, end):
...             bins[bin] += 1
...     def key((i, count)):
...         return count != 0
...     index_groups = itertools.groupby(enumerate(bins), key=key)
...     for isnonzero, indices in index_groups:
...         if isnonzero:
...             indices = [i for (i, count) in indices]
...             yield (indices[0], indices[-1])
...
py> spans = [(0,3), (4,7), (2,5), (9,14), (12,17)]
py> list(merge(spans, 20))
[(0, 6), (9, 16)]

Obviously, this needs some modification to handle datetime objects.

STeVe


From http  Thu May 26 15:40:24 2005
From: http (Paul Rubin)
Date: 26 May 2005 12:40:24 -0700
Subject: Q: "...Learning with Python" ...a property that addition and
	multiplication have...
References: <1117067025.233387.323910@z14g2000cwz.googlegroups.com>
Message-ID: <7xis154vyv.fsf@ruckus.brouhaha.com>

jeffbernstein at yahoo.com writes:
> question is, "Can you think of a property that addition and
> multiplication have that string concatenation and repetition do not?"
> 
> I thought it was the commutative property but "<string>"*3 is
> equivalent to 3*"<string>". Any ideas?

Um, string concatenation is not commutative.  "a"+"b" is not the same
as "b"+"a".


From john at castleamber.com  Sat May  7 20:15:27 2005
From: john at castleamber.com (John Bokma)
Date: 8 May 2005 00:15:27 GMT
Subject: New Python regex Doc (was: Python documentation moronicities)
References: <1113301533.054410.203710@z14g2000cwz.googlegroups.com>
	<mailman.1813.1113355346.1799.python-list@python.org>
	<1113856843.023012.165500@l41g2000cwc.googlegroups.com>
	<1113908069.264676.207090@g14g2000cwa.googlegroups.com>
	<1115328523.852744.110390@f14g2000cwb.googlegroups.com>
	<1115423751.016177.250650@o13g2000cwo.googlegroups.com>
	<1115444726.627426.172260@g14g2000cwa.googlegroups.com>
	<1115508491.462229.294020@o13g2000cwo.googlegroups.com>
Message-ID: <Xns964FC3E4883D6castleamber@130.133.1.4>

Xah Lee wrote:

> Let me expose one another fucking incompetent part of

your writing capablities?

If you really had a point, there wouldn't be any need of swearing...

-- 
John                               MexIT: http://johnbokma.com/mexit/
                           personal page:       http://johnbokma.com/
        Experienced programmer available:     http://castleamber.com/
            Happy Customers: http://castleamber.com/testimonials.html


From mwm at mired.org  Tue May 17 18:02:00 2005
From: mwm at mired.org (Mike Meyer)
Date: Tue, 17 May 2005 17:02:00 -0500
Subject: Python on a public library computer
References: <1116069664.779281.320540@g47g2000cwa.googlegroups.com>
	<87r7g6rbz0.fsf@pobox.com>
	<mailman.67.1116286093.8733.python-list@python.org>
	<1116330665.197293.198950@o13g2000cwo.googlegroups.com>
Message-ID: <861x858qav.fsf@guru.mired.org>

"Anton Vredegoor" <anton.vredegoor at gmail.com> writes:

> Timothy Smith wrote:
>
>> how locked down is the computer? there's a few (brave) public access
>> unix shell providers out there. if you could run telnet you could use
> them
>
> Sorry, no telnet. Every executable that is not listed is blocked. 

You sure? IE used to understand telnet: URLs, and would open a console
window talking to the remote end. It may have been doing it with an
external application, in which case this won't help you.

         <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From harold.fellermann at upf.edu  Fri May 13 06:08:49 2005
From: harold.fellermann at upf.edu (harold fellermann)
Date: Fri, 13 May 2005 12:08:49 +0200
Subject: Declaring self in PyObject_CallMethod
In-Reply-To: <1115598000.927106.167320@o13g2000cwo.googlegroups.com>
References: <1115598000.927106.167320@o13g2000cwo.googlegroups.com>
Message-ID: <c781029cbf53e1717c08b3e0fd82b74e@upf.edu>

Hi,

> Calling a python method from C++ has the following signature:
>
> PyObject *
> PyObject_CallMethod(PyObject *self, char *method_name,
>                     char *arg_format, ...);
>
> I'm having trouble figuring out how to declare self.
>
> Let's say my python file is called stuff.py and is like the following,
> doMath() is defined in stuff.py and is not part of any class:
>
> #stuff.py
>
> def doMath():
>    val = val + 1
>
>
> In C++, I think my codes should be like the following:
>
> PyObject *resultObj = PyObject_CallMethod( self, "doMath", "");
>
> What do I put for self? Any help please?

it looks like you are confusing methods (bound to class objects) and
functions (bound to modules). if your doMath is a function defined in
a module, use

PyObject* PyObject_Call(PyObject *callable_object, PyObject *args, 
PyObject *kw)

i.e.

PyObject resultObj = PyObject_Call(doMath,NULL,NULL);

If, however, doMath is declared as a class-bound method, you have to use
PyObject_CallMethod() with a pointer to an instance of this class as the
first argument.

Cheers,

- harold -

--
Je me suis enferm? dans mon amour -- je r?ve.
-- Paul Eluard



From dalke at dalkescientific.com  Tue May 10 15:45:15 2005
From: dalke at dalkescientific.com (Andrew Dalke)
Date: Tue, 10 May 2005 19:45:15 GMT
Subject: lists in cx_Oracle
References: <pan.2005.04.05.18.44.52.434578@dalkescientific.com>
	<pan.2005.04.30.17.02.16.988085@dalkescientific.com>
	<d57rds$mbd$1@news.sap-ag.de>
Message-ID: <pan.2005.05.10.19.45.15.915571@dalkescientific.com>

Daniel Dittmar wrote:
> Possible workarounds:
   ...
> - create a class for this purpose. Statement are created on the fly, but
> with placeholders so you don't run into the SQL Injection problem. As
> it's an object, you could cache these generated statements base on the
> size of the list
 
> It is unlikely that this can be solved at the driver level. Without
> support from the database, the driver would have to manipulate the SQL
> statement.
> And there are few predicates where a list parameter is useful. Expanding
> a list always yould lead to very bizarre error messages. Expanding them
> only where useful would require a SQL parser.

Perhaps I'm missing something fundamental here.  I thought the
terms like :arg2 were already being parsed at the Python/driver
interface, to insert the right values from the Python args.

If that was so then it could be solved at the driver level pretty
easily; use the aformentioned "class for this purpose".

It sounds like you're saying that the interface is actually implemented
by passing the execute string and a database-specific dictionary-like
object; the latter created by the DB-API interface.

If so, I now understand the limitation.

Hmmmm.....

				Andrew
				dalke at dalkescientific.com



From jerf at jerf.org  Sat May  7 10:19:18 2005
From: jerf at jerf.org (Jeremy Bowers)
Date: Sat, 07 May 2005 10:19:18 -0400
Subject: Listening to changes in a C++ variable from python
References: <1115434594.806252.12740@o13g2000cwo.googlegroups.com>
	<pan.2005.05.07.04.45.41.410011@jerf.org>
	<1115475418.801477.70220@o13g2000cwo.googlegroups.com>
Message-ID: <pan.2005.05.07.14.19.17.991102@jerf.org>

On Sat, 07 May 2005 07:16:58 -0700, lamthierry wrote:

> Is there some python method which can do the polling you are talking
> about? Or can you send me a link to some existing example?

Take a moment to go back to the basics. C++ is, in general, a simple
system. The *language* is complicated at times, but it does actually
strive for no unknown magic taking place. When you say "int i = 4", there
is some literal value in memory somewhere taking the value of 4. If you
say "i = 5", that value in memory now says five.

The reason you can't "listen" to this is quite literally because you RAM
does not have that ability (for good reason); there are no circuits that
are triggered when a value is changed. (I'm talking conventional RAM here,
with no hardware mapping or anything else special.)

Polling here simply means checking periodically. You don't need any
special functions or libraries, you just need to check periodically. Your
GUI system should have a system for creating timeouts, but without telling
me what that is, I can't give the code. (*I* may not be able to even so; I
have not used them all extensively enough to know about all the
schedulers.) Your timeout function should simply check the new value and
do the appropriate thing based on the new value.

So, there isn't really a "method", it's just combining your GUI scheduler
with a simple == or > or < or whatever else is appropriate in your case. 

If it takes more than about four or five lines to write the basic poller,
you're probably on the wrong track. (Correctly handling what the poller
sees may be more complicated, but the periodic checking should be simple.)

If you need more help (though I strongly suggest that you try to get the
scheduler to do something "two seconds from now" or something, and after
that it *should* be obvious what to do next), you'll need to include what
GUI toolkit you are using, and possibly the current Python code that you
are using to access the value you'd like the GUI to track. You may also
want to explain how you are connecting the apps; is the C++ part and the
Python part in one app in different threads, or are you using some other
communication form?

One warning: You might be tempted to use time.sleep(); don't do that. That
works OK in a Python program where only your code is running, but in any
GUI program the GUI itself is also running. Using time.sleep() will
completely stop *everything* during the duration of the sleep, completely
freezing the GUI as if it were locked up; that's why all GUIs have
schedulers, so they can keep running while your code waits.


From jeffelkins at earthlink.net  Wed May 11 14:07:16 2005
From: jeffelkins at earthlink.net (jeff elkins)
Date: Wed, 11 May 2005 18:07:16 +0000
Subject: Finding startup files
In-Reply-To: <1184dj36mp5sdc6@corp.supernews.com>
References: <mailman.375.1115827885.29826.python-list@python.org>
	<1115829176.541687.22090@z14g2000cwz.googlegroups.com>
	<1184dj36mp5sdc6@corp.supernews.com>
Message-ID: <200505111807.16833.jeffelkins@earthlink.net>

On Wednesday 11 May 2005 04:44 pm, Grant Edwards wrote:
> On 2005-05-11, hemagician at gmail.com <hemagician at gmail.com> wrote:
> > The following script demonstrates a method that should work for you. I
> > believe it is entirely cross-platform.
> >
> > #! /usr/bin/python
> >
> > import sys
> > import os
> >
> > print os.path.abspath(os.path.dirname(sys.argv[0]))
>
> That will probably work most of the time, but...
>
>  1) you're not gauranteed that argv[0] contains the application
>     path/filename.
>
>  2) the directory containing the executable is not where
>     configuration files are supposed to be stored under
>     Unix/Linux.

Thanks Grant,

I live and develop in Linux, but unfortunately, 99.99% of the users of this 
particular application (analysis of medical laboratory data) will be working 
with Windows. 

I'm totally new to Python (obvious,yes?) so how might argv[0] fail?

Jeff






From Alexander_Zatvornitskiy at p131.f3.n5025.z2.fidonet.org  Mon May 30 19:13:31 2005
From: Alexander_Zatvornitskiy at p131.f3.n5025.z2.fidonet.org (Alexander)
Date: Tue, 31 May 2005 03:13:31 +0400
Subject: eric3 question
Message-ID: <MSGID_2=3A5025=2F3.131_429bd668@fidonet.org>

Hello All!

I'am using eric3 IDE under win32 (snapshot 2005-04-10), and have a trouble. I
use this code:
    print "enter q to quit, or smthing else to continue"
    while not sys.stdin.readline()=="q":
        smthing(else)

I can't run this code to debug in eric3. The questions are - how to fix it and
how to ask user for press a key without troubles with eric?

msvcrt.kbhit don't work also.

Thank you in advance

Alexander, zatv at bk.ru


From martin at v.loewis.de  Sun May 22 15:26:42 2005
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Sun, 22 May 2005 21:26:42 +0200
Subject: install python 2.4.1
In-Reply-To: <1116760610.227839.83110@o13g2000cwo.googlegroups.com>
References: <1116758705.327764.33740@g14g2000cwa.googlegroups.com>
	<d6pot2$2rd$1@news5.zwoll1.ov.home.nl>
	<1116760610.227839.83110@o13g2000cwo.googlegroups.com>
Message-ID: <4290DCF2.1050509@v.loewis.de>

ajikoe at gmail.com wrote:
> I use win xp pro.
> I wonder about this new version of python because I use Nummeric, pyro,
>  combine with komodo and pydev ide in my python 2.4.
> If there is compatibility isue with the new version, it is better for
> me not to install the new version.

Installing 2.4.1 should not cause problems. 2.4.x is designed to be
compatible with 2.4, so all applications should continue to run.
The only exception would be an application that relies on the presence
of a bug that was fixed.

Regards,
Martin


From mwm at mired.org  Sat May 21 01:04:14 2005
From: mwm at mired.org (Mike Meyer)
Date: Sat, 21 May 2005 00:04:14 -0500
Subject: Running a python program during idle time only
References: <1116637560.499307.28700@o13g2000cwo.googlegroups.com>
Message-ID: <86y8a9xj8x.fsf@guru.mired.org>

"los" <carlos80 at gmail.com> writes:
> I'm trying to create a program similar to that of Google's desktop that
> will crawl through the hard drive and index files.  I have written the
> program and as of now I just put the thread to sleep for 1 second after
> indexing a couple of files.
>
> I'm wondering if anyone knows of a way that I could make so that the
> program will run at full speed only runs after the computer has been
> idle for a while.  I've looked at the "nice" command but that's not
> exactly what I want.

On Unix, nice is exactly the answer. It's a lot more fine-grained than
what you're talking about, though. But it's the way things like
setiathome manage to run continuously without interfering with normal
usage.

If that's to fine grained for you, you could try waking up every few
minutes and checking the load average (via os.getloadavg), and only
doing work if the load average is low - say less than .5. While
running, you check the load average every couple of minutes and stop
if it rises noticably above 1 (you). The problem with this approach is
that it doesn't deal well with multiple tools doing this. I.e. - if
you run setiathome, your load average will always be above 1, so you
have to adjust your check value to take into account anything else
that might be in the background. Nice handles this automatically.

     <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From marc.wyburn at gb.unisys.com  Thu May  5 07:50:23 2005
From: marc.wyburn at gb.unisys.com (marc.wyburn at gb.unisys.com)
Date: 5 May 2005 04:50:23 -0700
Subject: using variables with modules
In-Reply-To: <1115289856.244514.288070@z14g2000cwz.googlegroups.com>
References: <1115285809.074451.171110@z14g2000cwz.googlegroups.com>
	<1115288963.571659.22820@o13g2000cwo.googlegroups.com>
	<1115289856.244514.288070@z14g2000cwz.googlegroups.com>
Message-ID: <1115293823.731613.53390@g14g2000cwa.googlegroups.com>

thanks runes, that makes sense, time for me to go off and read some
more about strip and try:

Cheers, MW.



From saint.infidel at gmail.com  Thu May 12 16:17:32 2005
From: saint.infidel at gmail.com (infidel)
Date: 12 May 2005 13:17:32 -0700
Subject: Python Polymorphism
In-Reply-To: <mailman.495.1115928047.29826.python-list@python.org>
References: <mailman.495.1115928047.29826.python-list@python.org>
Message-ID: <1115929052.300044.71320@g43g2000cwa.googlegroups.com>

carlos> Supose that I want to create two methos (inside a
carlos> class) with exactly same name, but number of
carlos> parameters different

That isn't polymorphism, that's function overloading.

carlos> Look, I don't want to use things like:
carlos>
carlos>       def myMethod(self, myValue=None):
carlos>            if(not myValue):
carlos>                 self.myAttribute += 1
carlos>            else:
carlos>                 self.myAttribute += myValue

Pick another language then.  Or try:

def myMethod(self, myValue=1):
    self.myAttribute += myValue



From __peter__ at web.de  Wed May  4 17:08:16 2005
From: __peter__ at web.de (Peter Otten)
Date: Wed, 04 May 2005 23:08:16 +0200
Subject: annonymous functions -- how to
References: <1115239458.776800.240080@g14g2000cwa.googlegroups.com>
Message-ID: <d5bdip$bpp$05$2@news.t-online.com>

Mayer wrote:

> I would like to define a very large annonymous function, one with
> several statements in sequence. I know how to define annonymous
> functions, but I don't know how to define a sequence of statements in
> their body. Can this be done in Python? If so, how?

No, it can't. Why do you prefer your function to be anonymous?

Peter



From gh at ghaering.de  Sat May  7 22:37:34 2005
From: gh at ghaering.de (Gerhard Haering)
Date: Sun, 8 May 2005 04:37:34 +0200
Subject: [ANN] pysqlite 2.0.beta1
Message-ID: <20050508023734.GA4109@mylene.ghaering.de>

==================
pysqlite 2.0.beta1
==================

I'm glad to announce pysqlite 2.0.beta1. The API is 98 % stable now. And
pysqlite itself should be a lot more stable too, now.

The most notable changes are a lot of fixed refcount bugs, and the added
documentation.

Download the release here:

Sources: http://initd.org/pub/software/pysqlite/releases/2.0/2.0.beta1/pysqlite-2.0.beta1.tar.gz
win32 binaries for Python 2.3: http://initd.org/pub/software/pysqlite/releases/2.0/2.0.beta1/pysqlite-2.0.beta1.win32-py2.3.exe
win32 binaries for Python 2.4: http://initd.org/pub/software/pysqlite/releases/2.0/2.0.beta1/pysqlite-2.0.beta1.win32-py2.4.exe

pysqlite homepage, bug tracker, wiki: http://pysqlite.org/


Changes since 2.0.alpha4:
=========================

- Added pysqlite 2.0 documentation: usage guide and source installation guide.
  Adapted from kinterbasdb documentation with the permission of David Rushby.

- Fixed several refcount problems. Per test suite run, lose 0 references
  instead of 550 per test suite run like in alpha4.

- If a database file cannot be opened, raise an OperationalError specifically
  instead of a DatabaseError.

- Call the row factory with (cursor, row_tuple) instead of (row_tuple).

- Fixed a crash in .connect() when you tried to set a keyword argument. It's
  quite annoying that Python doesn't offer a method to extract a single keyword
  argument at C-level easily. Argh! So I bit the bullet and duplicated the
  parameter extraction code.

- The type name of PrepareProtocol was corrected. Only interesting for
  introspection.

- Added more tests to the test suite.

- Implemented cursor.arraysize.

- cursor.rowcount is now -1 instead of None in case of "not determined", like
  the DB-API requires.

- Implemented autocommit mode which replaces the ''no_implicit_begin''
  parameter to the module-level connect(). This way, we're more compatible with
  other DB-API modules. autocommit parameter in module-level connect and also
  an autocommit property of connections. -- The "begin" method of connections
  is gone.


- Completely reworked the advanced type detection:
    o connection.register_converter is gone
    o instead, the dictionary connection.converters is exposed directly.
    o The parameter more_types to the module-level connect is gone.
    o Instead, use any combination of PARSE_DECLTYPES and PARSE_COLNAMES for
      the new paramter detect_types.

      PARSE_DECLTYPES will parse out the first word of a declared type and look
      up a converter in connection.converters:

        create table foo(col mytype not null)

        The decltype would be "mytype not null", but PARSE_DECLTYPES will cut
        out "mytype" and look for a converter in converters["mytype"]. If it
        finds any, it will use it to convert the value. Otherwise, the standard
        SQLite manifest typing will be used.

    PARSE_COLNAMES will parse out the column names and look up a converter in
    connection.converters:

      cur.execute("select 1 as "colname [mytype]")

      the column names will be parsed for [...], in this case mytype will be
      found as the type for the colum, and the converters dictionary will be
      consulted for an appropriate converter function. If none is found, the
      standard SQLite manifest typing will be used.

   Also, the column names in cursor.description will only consist of the first
   word. So it would be "colname" in our example, not "colname [mytype]".

- cursor.coltypes is gone.

- The connection attribute of cursors is now made available at Python level.
  That's an optional DB-API extension.

- The exception classes are now attributes of the connection objects. That's an
  optional DB-API extension.

- Optimized the _sqlite_step_with_busyhandler() function by making time.time()
  and time.sleep() available at module import instead of importing the "time"
  module each time and getting out the "time" and "sleep" functions each time.
  Big performance improvement.

- Some work on the benchmarks.


- Made the destructor of the Cursor class more stable. It used to crash when an
  error occured in the Cursor *constructor*.

- Implemented a check that the parameter for Cursor() is actually an instance
  of the Connection class (or a subclass thereof).


- Allow long integers as parameters. Re-enable test cases for this.
-- 
Gerhard H?ring - gh at ghaering.de - Python, web & database development

pysqlite - Powerful and fast embedded database engine "SQLite" for Python.
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From mage at mage.hu  Wed May  4 12:14:52 2005
From: mage at mage.hu (Mage)
Date: Wed, 04 May 2005 18:14:52 +0200
Subject: postgresql plpython bug
Message-ID: <4278F4FC.9010907@mage.hu>

          Hello!

create or replace function trigger_keywords_maintain() returns trigger as $$
    return 'MODIFY'
$$ language plpythonu;

update table set id = id where id = 7;

ERROR:  invalid input syntax for type timestamp: "2005-05-03
14:07:33,279213"

I see that Python's timestamp format is not accepted by postgresql.

       Mage



From Neruocomp at yahoo.com  Sat May 14 12:37:43 2005
From: Neruocomp at yahoo.com (David)
Date: 14 May 2005 09:37:43 -0700
Subject: A new to Python question
Message-ID: <1116088663.428932.130860@g43g2000cwa.googlegroups.com>

Hi I'm trying to teach myself python and so far to good, but I'm having
a bit of trouble getting a function to work the way I think it should
work.  Right now I'm taking a simple program I wrote in Fortran and
trying to do it in Python.  I got it to work, but now I'm trying to
modularize it.  My fortran program uses a subroutine and I was trying
to do the same thing in Python.  But I'm still new so I'm having
trouble understanding what I'm doing wrong.  Here is my code:

#! /usr/bin/python
#This program takes two vectors and multiplies them
#against a 10X10 array.  It also then gives the dot product,
#sum, and max value of the array.

import Numeric
def abc(array1,array2,dotprod,sum,maxvalue):
    """Takes two arrays and performs predetermined calculations,
       Then returns the solutions back as the same array, along
       with the dot product, sum, and max value of the array."""
    #TODO: Get this damn thing working!!
    print "Array 1 in:",array1 #Debug
    data = Numeric.zeros((10,10))
    for i in range(10):
        for j in range(10):
            data[i,j] = (i+1)+(j+1)

    e = Numeric.matrixmultiply(data, array1)
    g = Numeric.matrixmultiply(Numeric.transpose(data),array2)
    array1 = e
    array2 = g
    dotprod = Numeric.dot(array1,array2)
    sum = Numeric.sum(array1)
    maxvalue = array2[Numeric.argmax(array2)]
    print "Array 1 out:",array1 #Debug

    return array1,array2,dotprod,sum,maxvalue #<<-- Not working as I
thought it would.

x = Numeric.arange(1,11)
y = Numeric.arange(1,11)*2
dotp,sumx,maxv = 0,0,0  #Is this the only way to declare a variable?

print 'Array X:',x
print 'Array Y:',y
abc(x,y,dotp,sumx,maxv)
print 'Calling function abc'
print 'Array X:',x
print 'Array Y:',y
print 'Dot Product of X and Y:',dotp
print 'Sum of array X:',sumx
print 'Max value of array Y:',maxv

If you run it the data gets passed to the function just fine and it
finds the right numbers.  Its just getting it to pass them back thats
not working.  I put some print statements inside the function just to
see how the data gets passed.  So any ideas that would help me? If you
want to see the fortran code just email me.

David



From correiajREMOVECAPS at hotmail.com  Mon May  2 11:35:29 2005
From: correiajREMOVECAPS at hotmail.com (J Correia)
Date: Mon, 02 May 2005 15:35:29 GMT
Subject: Webbrowser On Windows
References: <mailman.85.1114978611.14961.python-list@python.org>
	<SBhde.23647$HR1.2796@clgrps12>
	<1115008759.797584.24510@f14g2000cwb.googlegroups.com>
	<1115010604.189459.146210@o13g2000cwo.googlegroups.com>
Message-ID: <5Nrde.29613$vN2.14952@clgrps13>


"M.E.Farmer" <mefjr75 at hotmail.com> wrote in message
news:1115010604.189459.146210 at o13g2000cwo.googlegroups.com...
> I played around with it.
>
############################################################################
> import pythoncom
> from win32com.client import Dispatch
>
############################################################################
> def webbrowser(url=None):
>     ie = pythoncom.CoCreateInstance("InternetExplorer.Application",
> None,
>                      pythoncom.CLSCTX_SERVER,
>                      pythoncom.IID_IDispatch)
>     ie = Dispatch(ie)
>     ie.Navigate
>     if url:
>         ie.Navigate(url)
>     ie.Visible = 1
>     return ie
>
############################################################################
#
> import time
> w = webbrowser()
> w.Navigate('http://www.google.com')
> time.sleep(2)
> w.Navigate('http://dir.gmane.org/gmane.comp.python.general')
> time.sleep(2)
>
webbrowser('http://groups-beta.google.com/group/comp.lang.python?hl=en&lr=')
> webbrowser('http://python.org')
>
############################################################################
#
> M.E.Farmer
>

Noticed your sleep statements... because the response times vary from site
to site you might want to use this code:

while w.ReadyState != 4:       # 4 signals browser has finished loading and
is ready... 0=uninitialised; 1=loading; 2=loaded; 3=interactive; 4=complete
    time.sleep(1)

While we're on that subject... if you go further and expose the Document
object to work with the contents of the browser, for example...

doc = w.Document

then you also need to check for document readiness before continuing
processing as follows...

while w.ReadyState != 4 and doc.readyState != "complete":
        time.sleep(1)

Useful links:
http://msdn.microsoft.com/workshop/browser/webbrowser/reference/ifaces/IWebBrowser2/IWebBrowser2.asp

http://msdn.microsoft.com/workshop/author/dhtml/reference/objects/obj_document.asp

HTH,




From thomas.weholt at gmail.com  Mon May 16 16:59:31 2005
From: thomas.weholt at gmail.com (Thomas W)
Date: 16 May 2005 13:59:31 -0700
Subject: Parsing text into dates?
Message-ID: <1116277171.492587.38080@g47g2000cwa.googlegroups.com>

I'm developing a web-application where the user sometimes has to enter
dates in plain text, allthough a format may be provided to give clues.
On the server side this piece of text has to be parsed into a datetime
python-object. Does anybody have any pointers on this?

Besides the actual parsing, my main concern is the different locale
date formats and how to be able to parse those strange us-like
"month/day/year" compared to the clever and intuitive european-style
"day/month/year" etc.

I've searched google, but haven't found any good referances that helped
me solve this problem, especially with regards to the locale date
format issues.

Best regards,
Thomas



From Scott.Daniels at Acm.Org  Fri May  6 19:22:32 2005
From: Scott.Daniels at Acm.Org (Scott David Daniels)
Date: Fri, 06 May 2005 16:22:32 -0700
Subject: Reference to self not passed to member function
In-Reply-To: <mailman.113.1115418785.29826.python-list@python.org>
References: <mailman.113.1115418785.29826.python-list@python.org>
Message-ID: <427bf61e$1@nntp0.pdx.net>

James Stroud wrote:
> Hello All,
> 
> I did this:
> 
> py> class bob(object):
> ...   def __init__(self,**kwargs):
> ...     for fname,func in kwargs.items():
> ...       setattr(self, fname, lambda *args : func(*args))
> ...
> py> def doit():
> ...   print "wuzzup?"
> ...
> py> abob = bob(doit=doit)
> py>
> py> abob.doit()
> wuzzup?

> Much to my surprise, this works fine. 
 > 1. What exactly is going on?

This behavior shouldn't surprise you.  You stored a function as
an attribute.  In fact you could have simply done:
py> class bob(object):
...   def __init__(self,**kwargs):
...       for fname, function in kwargs.items():
...           setattr(self, fname, function)

> 2. How can I get ref to self passed to doit() if I want it to? This:
>         abob.doit(abob)

py> import new
py> class carol(object):
...    def __init__(self, **kwargs):
...        for name, method in kwargs.items():
...            setattr(self, name,
...                    new.instancemethod(method, self, carol))

This should behave as you prefer.


--Scott David Daniels
Scott.Daniels at Acm.Org


From steven.bethard at gmail.com  Wed May  4 13:08:37 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Wed, 04 May 2005 11:08:37 -0600
Subject: how can I sort a bunch of lists over multiple fields?
In-Reply-To: <1114796569.028242.45700@o13g2000cwo.googlegroups.com>
References: <1114623282.855415.132040@l41g2000cwc.googlegroups.com>
	<1114634355.348110.141690@o13g2000cwo.googlegroups.com>
	<EYednbmZKbHHZ_LfRVn-gA@comcast.com>
	<1114710873.292998.128090@f14g2000cwb.googlegroups.com>
	<1114714105.582253.12150@f14g2000cwb.googlegroups.com>
	<uIydnXD17Z2c2-zfRVn-2A@comcast.com>
	<1114724023.743271.275710@g14g2000cwa.googlegroups.com>
	<S8qdneMehej_CezfRVn-rg@comcast.com>
	<1114796569.028242.45700@o13g2000cwo.googlegroups.com>
Message-ID: <Do6dnTrNEaMLnOTfRVn-hw@comcast.com>

Lonnie Princehouse wrote:
> Non-trivial:
>   Any time the user decides to (1) cache intermediary results for a cmp
> function or (2) define a __cmp__ function for the key return value.
> These arise when comparison of partial keys is often sufficient to
> establish order between two objects.

If you want to compare partial keys, often the simplest approach is to 
use tuples as keys, with the elements of the tuple being the "parts" of 
the key.  Python's standard tuple comparison mechanism takes care of the 
rest.

STeVe


From fredrik at pythonware.com  Tue May 10 13:01:32 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 10 May 2005 19:01:32 +0200
Subject: object oriented inheritance problem
References: <d5qo62$l2o$1@vegh.ks.cc.utah.edu>
Message-ID: <d5qove$sl2$1@sea.gmane.org>

Matthew Thorley wrote:

> I am trying to inherit from ElementTree so I can add some methods. This
> is the code I am trying to make work, and the following is the error I
> am getting.
>
> from elementtree import ElementTree
> class AcidTree(ElementTree):
>     def write_string(self):
>         ....
>
> File "/home/hope/var/proj/acid/server/mgacparse.py", line 22, in ?
>     class AcidTree(ElementTree):
> TypeError: Error when calling the metaclass bases
>     module.__init__() takes at most 2 arguments (3 given)
>
> I have *no* idea what is going on here.

note that you're trying to inherit from a module.  the error message could
need some work...

something like

    from elementtree.ElementTree import ElementTree, tostring

    class AcidTree(ElementTree):
        def write_string(self):
            return tostring(self)

should work better.

</F>





From superprad at gmail.com  Fri May 13 13:30:53 2005
From: superprad at gmail.com (superprad at gmail.com)
Date: 13 May 2005 10:30:53 -0700
Subject: create words of various lengths
In-Reply-To: <mailman.42.1116004127.29328.python-list@python.org>
References: <1116002403.374232.210220@g49g2000cwa.googlegroups.com>
	<mailman.42.1116004127.29328.python-list@python.org>
Message-ID: <1116005453.047943.153790@g14g2000cwa.googlegroups.com>

no specific number of words.
and I get a syntax error on line:
> words["".join(choice(alphabet) for i in range(randint(1,15)))] = None



From grante at visi.com  Thu May 26 11:17:28 2005
From: grante at visi.com (Grant Edwards)
Date: Thu, 26 May 2005 15:17:28 -0000
Subject: Automatically populate and submit HTML Forms
References: <d72h34$2is$1@solaris.cc.vt.edu>
	<119bq0i5r14li9d@corp.supernews.com>
Message-ID: <119bq48dhtb6fd7@corp.supernews.com>

On 2005-05-26, Grant Edwards <grante at visi.com> wrote:

>> How can I make a python client script connect to a Web server and 
>> automatically populate form fields and then submit the form?

> Just use urllib() and pass the form data to the urlopen()
> method.  If given data, it will generate a "POST" request
> instead of a "GET".

Oops, I forgot.  Here's a pointer to the examples in the urllib
docs:

     http://docs.python.org/lib/node478.html

-- 
Grant Edwards                   grante             Yow!  This is PLEASANT!
                                  at               
                               visi.com            


From martin at v.loewis.de  Tue May 10 01:21:32 2005
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Tue, 10 May 2005 07:21:32 +0200
Subject: Question: Threading and embedding python in an application
In-Reply-To: <2005050919514316807%daha@bestcom>
References: <2005050919514316807%daha@bestcom>
Message-ID: <428044db$0$23118$9b622d9e@news.freenet.de>

David Harrison wrote:
> I am working on an application on Mac OS X that calls out
> to python via PyImport_ImportModule().  I find that if
> the imported module creates and starts a python thread,
> the thread seems to be killed when the import of
> the module is complete.   Is this expected?  

No. Most likely, the code in the thread raises an
exception that is never caught. Can you see stderr of
the application?

Regards,
Martin


From ccurvey at gmail.com  Mon May  2 13:12:38 2005
From: ccurvey at gmail.com (Chris Curvey)
Date: 2 May 2005 10:12:38 -0700
Subject: anybody have a CGIXMLRPCRequestHandler example?
In-Reply-To: <1114698042.831888.224060@g14g2000cwa.googlegroups.com>
References: <1114698042.831888.224060@g14g2000cwa.googlegroups.com>
Message-ID: <1115053958.885525.275850@o13g2000cwo.googlegroups.com>

here's the simple example, for posterity

import os
import SimpleXMLRPCServer

class Foo:
    def settings(self):
        return os.environ
    def echo(self, something):
        return something
    def greeting(self, name):
        return "hello, " + name

handler = SimpleXMLRPCServer.CGIXMLRPCRequestHandler()
handler.register_instance(Foo())
handler.handle_request()


and here's an example of the client that has to speak with it.  My
mistake was trying to call the server thru a web browser.  The
"textcall" shows you the format of the incoming request (which I
suppose I could have built by hand by reading the spec).

import xmlrpclib

server = xmlrpclib.ServerProxy("http://127.0.0.1/cms/Foo.py")

yoonikode = u'Sacr\xe9 Bleu'
tup = tuple([yoonikode])
print tup
textcall = xmlrpclib.dumps(tup,("server.echo"))
print textcall
print server.echo("hi")
print server.greeting("dilbert")
print server.greeting(yoonikode)



From wuwei23 at gmail.com  Sun May 22 21:22:01 2005
From: wuwei23 at gmail.com (alex23)
Date: 22 May 2005 18:22:01 -0700
Subject: Python on a public library computer
In-Reply-To: <1116592130.314355.202930@g44g2000cwa.googlegroups.com>
References: <1116069664.779281.320540@g47g2000cwa.googlegroups.com>
	<87r7g6rbz0.fsf@pobox.com>
	<mailman.67.1116286093.8733.python-list@python.org>
	<1116330665.197293.198950@o13g2000cwo.googlegroups.com>
	<861x858qav.fsf@guru.mired.org>
	<1116417677.506240.261730@g47g2000cwa.googlegroups.com>
	<1116464373.016279.13030@f14g2000cwb.googlegroups.com>
	<1116592130.314355.202930@g44g2000cwa.googlegroups.com>
Message-ID: <1116811321.127978.47970@z14g2000cwz.googlegroups.com>

> Maybe, but in this case I can run only IE, word, excel and
powerpoint.
> Do you think there is a rational reason for that?

Yes. It's easier to support. As someone who has worked at administering
small & large scale networks, you want that job to be as easy as
possible...

In this case, it sounds like the library is providing computers for two
purposes: access to Office tools and to the internet. Given the
"everything not forbidden is permissable" attitude of most people,
unless the use is restricted to only those two activities people
legitimately wanting access will tend to end up waiting for others who
have co-opted the services for their own personal end.

> On the other hand one might look at public libraries as places suited
> to inspire people and showing them how one is to treat the users of a
> public service.

By _secretly_ commandeering public resources for your own private use
outside of the scope of their intended usage, you plan on showing how
the public is responsible enough to do anything they want with those
resources?

At the end of the day, some staff member is left with having to clean
up whatever is done to those public terminals. I think the motivation
here has less to do with "selling out" the European Constitution and
more to do with someone just wanting to get home from their job with
the minimum of hassle.

-alex23



From querypk at gmail.com  Sat May 28 17:52:48 2005
From: querypk at gmail.com (querypk at gmail.com)
Date: 28 May 2005 14:52:48 -0700
Subject: scipy for python 2.4
In-Reply-To: <mailman.223.1117315996.18027.python-list@python.org>
References: <1117314382.677584.133160@o13g2000cwo.googlegroups.com>
	<mailman.223.1117315996.18027.python-list@python.org>
Message-ID: <1117317168.501105.187110@z14g2000cwz.googlegroups.com>

I tried to compile it from source. But it dint work.It was looking for
python2.3 .But I want to install it on pyrthon 2.4
PLatform you mean I am using RedHat 9.0. is that what you were
referring?
can you point me to the source you are referring. I used the sourse
from this link...

http://www.scipy.org/download/



From tim.peters at gmail.com  Mon May  9 14:50:45 2005
From: tim.peters at gmail.com (Tim Peters)
Date: Mon, 9 May 2005 14:50:45 -0400
Subject: Inverse confusion about floating point precision
In-Reply-To: <17023.44485.749242.50089@montanaro.dyndns.org>
References: <mailman.218.1115660266.29826.python-list@python.org>
	<1115661982.476675.7940@f14g2000cwb.googlegroups.com>
	<17023.44485.749242.50089@montanaro.dyndns.org>
Message-ID: <1f7befae050509115039f7fe8c@mail.gmail.com>

[Dan] 
>    Dan> The floating-point representation of 95.895 is exactly
>    Dan> 6748010722917089 * 2**-46.

[Skip Montanaro]
> I seem to recall seeing some way to extract/calculate fp representation from
> Python but can't find it now.  I didn't see anything obvious in the
> distribution.

For Dan's example,

>>> import math
>>> math.frexp(95.895)
(0.74917968749999997, 7)
>>> int(math.ldexp(_[0], 53))
6748010722917089L


From Oyvind.Ostlund at cern.ch  Wed May 11 05:39:20 2005
From: Oyvind.Ostlund at cern.ch (Oyvind Ostlund)
Date: Wed, 11 May 2005 11:39:20 +0200
Subject: Reading files into a 2D list.
Message-ID: <9D1BA87B48D4F440A0D9E371471F45A5112C54@cernxchg21.cern.ch>

I am not sure what the right syntax is here. So please help me out (started 2 days ago).

I have a list of about 20 files that I want to read line by line into a 2D list. So the first dimension will be each file, and the second every line in that file.


I tried to do something like this:

    files_and_lines = [][]
    filenumber = 0
    
    for files in file_names:
        try:
            lexi_file = open(str(sys.path[0]) + "/lexi/" + files, "r")
            files_and_lines[filenumber] = lexi_file.readlines()
            filenumber = filenumber + 1

        except(IOError):
            print "Something went wrong trying to read the file:"
            print "'" + str(sys.path[0]) + files + "'"



But that was not very sucksessfully. I am not even sure on how to define an empty 2D list. Thanks for all help.

??


From fraca7 at free.fr  Fri May 27 09:34:05 2005
From: fraca7 at free.fr (fraca7)
Date: Fri, 27 May 2005 15:34:05 +0200
Subject: write to the same file from multiple processes at the same time?
In-Reply-To: <e3617$429713d7$3eb01f24$9096@news.flashnewsgroups.com>
References: <e3617$429713d7$3eb01f24$9096@news.flashnewsgroups.com>
Message-ID: <429721cd$0$1821$626a14ce@news.free.fr>

gabor a ?crit :

> [snip]

Try this:

http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/65203


From tziade at nuxeo.com  Wed May 18 10:53:19 2005
From: tziade at nuxeo.com (=?ISO-8859-1?Q?Tarek_Ziad=E9?=)
Date: Wed, 18 May 2005 16:53:19 +0200
Subject: TypeError: ssl() argument 1 must be _socket.socket, not _socketobject
	-> Solution
Message-ID: <428B56DF.5050004@nuxeo.com>

Hi,

by googling for a ssl socket problem, i've seen you guys had the same 
problem

ie : http://mail.python.org/pipermail/python-list/2005-April/278179.html

I have found the problem :

If you trace a little bit and look at __module__ attribute of the 
socket, you will probably find out socket has been patched but the 
timeout mechanism,
provided by the old timeoutsocket.py module provided by Timothy O'Malley

timeoutsocket module is pretty *strong* since it catches all sockets in 
your code, even thaught you did'nt ask for it, imo this is evil

Latests Python have integrated timeout mechanism in sockets so you 
should remove all timeoutsocket.py you have in your paths

Regards

Tarek

-- 
Tarek ZIADE, Nuxeo SARL: Zope Service Provider.
Mail: tz at nuxeo.com - Tel: +33 (0)6 30 37 02 63
Nuxeo Collaborative Portal Server: http://www.nuxeo.com/cps
Gestion de contenu web / portail collaboratif / groupware / open source



From facundobatista at gmail.com  Sun May 15 12:11:58 2005
From: facundobatista at gmail.com (Facundo Batista)
Date: Sun, 15 May 2005 13:11:58 -0300
Subject: Does anybody know the status of PyCon recordings?
In-Reply-To: <1115661747.440960.44200@z14g2000cwz.googlegroups.com>
References: <mailman.219.1115660518.29826.python-list@python.org>
	<1115661747.440960.44200@z14g2000cwz.googlegroups.com>
Message-ID: <e04bdf31050515091158497618@mail.gmail.com>

On 9 May 2005 11:02:27 -0700, S?bastien Boisg?rault
<Sebastien.Boisgerault at gmail.com> wrote:

> http://www.pycon.org/talks/

??:

"""
Site Error

An error was encountered while publishing this resource.

Debugging Notice
Zope has encountered a problem publishing your object.

The object at http://www.pycon.org/talks/index_html has an empty or
missing docstring. Objects must have a docstring to be published.
"""

.    Facundo

Blog: http://www.taniquetil.com.ar/plog/
PyAr: http://www.python.org/ar/


From eurleif at ecritters.biz  Wed May 25 11:29:01 2005
From: eurleif at ecritters.biz (Leif K-Brooks)
Date: Wed, 25 May 2005 15:29:01 GMT
Subject: Using properties
In-Reply-To: <1117029966.799908.183830@f14g2000cwb.googlegroups.com>
References: <1117029966.799908.183830@f14g2000cwb.googlegroups.com>
Message-ID: <1R0le.9236$5I5.754570@newshog.newsread.com>

tkpmep at hotmail.com wrote:
>     name=property(getname,setname,None,None)
> 
> However, it no longer works if I modify getname and setname to
> 
>     def getname(self):
>         return self.name
> 
>     def setname(self,newname="Port2"):
>         self.name=newname

That's because you're actually modifying the property in setname instead
of modifying the normal attribute. It's equivalent to doing:

def setname(self, newname="Port2"):
    self.setname(newname)


From alex at quad.com.ar  Tue May 17 10:15:05 2005
From: alex at quad.com.ar (Alex Verstraeten)
Date: Tue, 17 May 2005 11:15:05 -0300
Subject: Design Question.  Data Acquisition/Display related.
In-Reply-To: <4289eae4$0$344$4d4efb8e@read.news.be.uu.net>
References: <4289eae4$0$344$4d4efb8e@read.news.be.uu.net>
Message-ID: <4289FC69.2020509@quad.com.ar>

StepH wrote:

>1./ Is each "display" must responsible to acquire/read the data ?
>2./ Or an engine collect the data then send them to each "display" ?
>
>  
>
I'd keep it simple:

- DataCollector class
asociated with one or more display instances (implemented as a list of 
display subscribers)
it collects data from a source and notifies each subscribed display that 
new data is available.
could something like a 'collect' method which performs:

for display in self.subscribed_displays:
   display.update( data )


- Display class
just a simple display class with an "update" method
it should be able to receive new data
and display new data
(those 2 actions could be implemented in different methods, you might 
not want to display everytime new data is available... maybe you might 
want to consolidate data in some way and output it at some high interval)

>Also, how to "anim" this ?
>
>1./ Via a timer ?
>2./ Via a simple loop (read/update display/pause/read user key)
>  
>

a simple loop could do it
  - handle user events
  - collect data
  - update displays
  - sleep




From mwm at mired.org  Mon May 16 03:45:28 2005
From: mwm at mired.org (Mike Meyer)
Date: Mon, 16 May 2005 02:45:28 -0500
Subject: Newbie : checking semantics
References: <1115503520.392357.230620@f14g2000cwb.googlegroups.com>
	<1115522729.126979.95210@g14g2000cwa.googlegroups.com>
	<1116187157.275381.302120@g49g2000cwa.googlegroups.com>
	<55df811ic0jaqjk7lgvgvuqdk0btgcgdhf@4ax.com>
Message-ID: <86hdh3d36v.fsf@guru.mired.org>

Dennis Lee Bieber <wlfraed at ix.netcom.com> writes:

> 	Or the infamous, and maybe urban legend, of the early FORTRAN
> compiler in which literal constants weren't...
>
> 	call inc(1)
> 	write(6, 100) 1
>  100	format("I5")
> ....
>
> 	subroutine inc(i)
> 	i = i + 1
> 	return
>
> ... would print "    2"

It's not an urban legend. I used to sit in a booth and answer student
programmers questions at a university, and saw this bug more than once
from people learning FORTRAN on an IBM 370.

     <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From timothy at open-networks.net  Mon May 16 19:01:14 2005
From: timothy at open-networks.net (Timothy Smith)
Date: Tue, 17 May 2005 09:01:14 +1000
Subject: query progress bar
Message-ID: <4289263A.2090007@open-networks.net>

is it possible to mke a progress bar for queries? say i have a query 
that will take 20 seconds, i'd like to give some feed back to users on 
how long this will take.


From modelnine at ceosg.de  Sun May  1 16:09:11 2005
From: modelnine at ceosg.de (Heiko Wundram)
Date: Sun, 1 May 2005 22:09:11 +0200
Subject: autoconf wizard wanted
Message-ID: <200505012209.14167.modelnine@ceosg.de>

Hi all!

Although it's slightly OT: I've written PAM, NSS and PPPd plugins which do 
authentication (and other things) against a running Python daemon, 
communicating via a Unix domain socket.

For the C part of the whole adventure (the modules for PAM, NSS and PPPd), I'd 
love to have some form of autoconf/automake installation routine before I 
distribute the whole thing, but I myself am not knowledgeable with the use of 
automake and its likenesses, as they always seem like black magic to me. For 
me, a makeit.sh shell script suffices to create the libs... ;)

If there's anybody who'd want to work together with me on this project (to 
have a look at the C code and also to create some form of autoconf/automake 
magic), would you kindly contact me offlist. The sources as they stand now 
(basically the C code plus some rudimentary form of daemons to test against, 
the rest is in the works) are available from my blog (which is in german, but 
just read the last entry) whose URL is in my sig.

Thanks for your time!

-- 
--- Heiko.
listening to: Muse - Falling Down
  see you at: http://www.stud.mh-hannover.de/~hwundram/wordpress/
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From iv at lantic.net  Mon May 16 12:00:50 2005
From: iv at lantic.net (Iwan Vosloo)
Date: 16 May 2005 09:00:50 -0700
Subject: Structuring larger applications - ideas
In-Reply-To: <mailman.49.1116257300.8733.python-list@python.org>
References: <1116255787.625276.221670@g14g2000cwa.googlegroups.com>
	<mailman.49.1116257300.8733.python-list@python.org>
Message-ID: <1116259250.698199.256210@g44g2000cwa.googlegroups.com>


I know my foreign (to python) one class per module idea is what makes
life more difficult for me here.  And there is an argument to be made
out that it is a stupid remnant I stick to from having used it in other
programming languages (do I have to admit C++ in my background?)  Two
small examples of where it it useful for me:  my development
environment is run by make to a large extent.  Many standard UNIX tools
have the intelligence to deal with filenames, and if you know a file
corresponds to a class, you have a lot more info available in your
makefile.  Also, if I use my version control software (currently gnu
arch) to see what's changed, for example, I get a list of changes files
which again gives me more info because I know a file corresponds to a
class.
So, I can do a number of such small things using that convention that
works well with standard old UNIX tools.  And I find that valuable.

As for the dependencies- I'm trying to keep the specification of them
simple.  From a design point of view, it makes sense to me to only
specify ONCE that largeish-collection-of-classes-A depends on
largeish-collection-of-classes-B.  As another simple small example: say
I change the name of large-collection-of-classes-B - this way I only
need to do it once, else I need to grep and sed all over in order to do
it.

It just feels cleaner and easier.

I know essentially, if you stick to having many classes in a python
module, you have what I referred to in the previous paragraph, because
you can stick to importing other modules at the beginning of a module
and so have them and their contens available in the entire file.

Still, I'm investigating whether I can bend the ever-so-flexible python
to work well with my admittedly somewhat strange requirement.  And, off
course, I'd like to hear what others think.

-i



From bokr at oz.net  Thu May  5 16:01:44 2005
From: bokr at oz.net (Bengt Richter)
Date: Thu, 05 May 2005 20:01:44 GMT
Subject: dictionary comparison
References: <1115306371.818120.150340@f14g2000cwb.googlegroups.com>
Message-ID: <427a78cc.758587891@news.oz.net>

On 5 May 2005 08:19:31 -0700, "rickle" <devrick88 at gmail.com> wrote:

>I'm trying to compare sun patch levels on a server to those of what sun
>is recommending.  For those that aren't familiar with sun patch
>numbering here is a quick run down.
>
>A patch number shows up like this:
>113680-03
>^^^^^^ ^^
>patch#  revision
>
>What I want to do is make a list.  I want to show what server x has
>versus what sun recommends, and if the patch exists, but the revision
>is different, I want to show that difference.
>
>Here are some sample patches that sun recommends:
>117000-05
>116272-03
>116276-01
>116278-01
>116378-02
>116455-01
>116602-01
>116606-01
>
>Here are some sample patches that server x has:
>117000-01
>116272-02
>116272-01
>116602-02
>
>So there are some that are the same, some that sun recommends that
>server x doesn't have, and some where the patch is the same but the
>revision is different.
>
>I've thrown the data into dictionaries, but I just can't seem to figure
>out how I should actually compare the data and present it.  Here's what
>I have so far (the split is in place because there is actually a lot
>more data in the file, so I split it out so I just get the patch number
>and revision).  So I end up with (for example) 116272-01, then split so
>field[0] is 116272 and field[1] is 01.
>
>def sun():
>        sun = open('sun-patchlist', 'r')
>        for s in sun:
>                sun_fields = s.split(None, 7)
>                for sun_field in sun_fields:
>                        sun_field = sun_field.strip()
>                sun_patch = {}
>                sun_patch['number'] = sun_fields[0]
>                sun_patch['rev'] = sun_fields[1]
>                print sun_patch['number'], sun_patch['rev']
>        sun.close()
>
>def serverx():
>        serverx = open('serverx-patchlist', 'r')
>        for p in serverx:
>                serverx_fields = p.split(None, 7)
>                for serverx_field in serverx_fields:
>                        serverx_field = serverx_field.strip()
>                serverx_patch = {}
>                serverx_patch['number'] = serverx_fields[0]
>                serverx_patch['rev'] = serverx_fields[1]
>                print serverx_patch['number'], serverx_patch['rev']
>        serverx.close()
>
>if __name__=='__main__':
>        sun()
>        serverx()
>
>
>Right now I'm just printing the data, just to be sure that each
>dictionary contains the correct data, which it does.  But now I need
>the comparison and I just can't seem to figure it out.  I could
>probably write this in perl or a shell script, but I'm trying really
>hard to force myself to learn Python so I want this to be a python
>script, created with only built-in modules.
>
>Any help would be greatly appreciated,
>
In place of sun_rec.splitlines() and x_has.splitlines() you can substitute
 open('sun-patchlist') adn open('serverx-patchlist') respectively,
and you can wrap it all in some rountine for your convenience etc.
But this shows recommended revs that are either there, missing, and/or have unrecommended revs present.
I added some test data to illustrate. You might want to make the input a little more forgiving about
e.g. blank lines etc or raise exceptions for what's not allowed or expected.

----< sunpatches.py >--------------------------------------------------------------
#Here are some sample patches that sun recommends:
sun_rec = """\
117000-05
116272-03
116276-01
116278-01
116378-02
116455-01
116602-01
116606-01
testok-01
testok-02
testok-03
test_0-01
test_0-02
test_0-03
test_2-01
test_2-02
test_2-03
test23-02
test23-03
"""

#Here are some sample patches that server x has:
x_has = """\
117000-01
116272-02
116272-01
116602-02
testok-01
testok-02
testok-03
test_2-01
test_2-02
test23-01
test23-02
test23-03
"""

def mkdict(lineseq):
    dct = {}
    for line in lineseq:
        patch, rev = line.split('-')
        dct.setdefault(patch, set()).add(rev)
    return dct
    
dct_x_has = mkdict(x_has.splitlines()) # or e.g., mkdict(open('sunrecfile.txt'))
dct_sun_rec = mkdict(sun_rec.splitlines())

for sunpatch, sunrevs in sorted(dct_sun_rec.items()):
    xrevs = dct_x_has.get(sunpatch, set())
    print 'patch %s: recommended revs %s, missing %s, actual other %s'%(
        sunpatch, map(str,sunrevs&xrevs) or '(none)',
        map(str,sunrevs-xrevs) or '(none)', map(str,xrevs-sunrevs) or '(none)')
----------------------------------------------------------------------------------
Result:

[12:51] C:\pywk\clp>py24 sunpatches.py
patch 116272: recommended revs (none), missing ['03'], actual other ['02', '01']
patch 116276: recommended revs (none), missing ['01'], actual other (none)
patch 116278: recommended revs (none), missing ['01'], actual other (none)
patch 116378: recommended revs (none), missing ['02'], actual other (none)
patch 116455: recommended revs (none), missing ['01'], actual other (none)
patch 116602: recommended revs (none), missing ['01'], actual other ['02']
patch 116606: recommended revs (none), missing ['01'], actual other (none)
patch 117000: recommended revs (none), missing ['05'], actual other ['01']
patch test23: recommended revs ['02', '03'], missing (none), actual other ['01']
patch test_0: recommended revs (none), missing ['02', '03', '01'], actual other (none)
patch test_2: recommended revs ['02', '01'], missing ['03'], actual other (none)
patch testok: recommended revs ['02', '03', '01'], missing (none), actual other (none)

Oops, didn't pyt multiple revs in sort order. Oh well, you can do that if you like.

Regards,
Bengt Richter


From wuwei23 at gmail.com  Tue May 31 04:54:33 2005
From: wuwei23 at gmail.com (alex23)
Date: 31 May 2005 01:54:33 -0700
Subject: regular expression problem
In-Reply-To: <1117527562.055872.93830@o13g2000cwo.googlegroups.com>
References: <1117527562.055872.93830@o13g2000cwo.googlegroups.com>
Message-ID: <1117529673.000965.321770@g49g2000cwa.googlegroups.com>

borges2003xx at yahoo.it wrote:
> hi everyone
> there is a way, using re, to test (for es) in
> a=[a1,a2,a3,a4,a5,a6,a7,a8,a9,a10,a11,a12,a13,a14] if a list b is
> composed by three "sublists" of a separated or not by elements.

Heya,

Is there any particular reason why you need to use re?

If you're using Python 2.3 or greater, the sets module might be easier
to deal with here:

>>> from sets import Set
>>> a = Set([1,2,3,4,5,6,7,8,9,10,11,12,13,14])
>>> b = Set([2,3,4,7,8,12,13])
>>> b.issubset(a)
True
>>> b = Set([1,2,5,14])
>>> b.issubset(a)
True
>>> b = Set([3,7,23,200])
>>> b.issubset(a)
False

Sets are unsorted, I'm uncertain if that's a requirement for you.

Hope this helps.
-alex23



From matthew_shomphe at countrywide.com  Tue May 10 16:17:41 2005
From: matthew_shomphe at countrywide.com (Matt)
Date: 10 May 2005 13:17:41 -0700
Subject: Need a little parse help
In-Reply-To: <mailman.310.1115747834.29826.python-list@python.org>
References: <mailman.310.1115747834.29826.python-list@python.org>
Message-ID: <1115756261.255249.299870@f14g2000cwb.googlegroups.com>

Alex Nordhus wrote:
> Im trying to grab a colum of data from a text file and write it to a
new
> file.
> I am having trouble getting It to write the data to newlines. Python
is
> making it one
> Long string without any spaces when it writes the file. The first
> character is capitalized in colum 2.
> I am trying to grab the 2nd colum in the file.
>
> import sys, string
>
> inputfilenames, outputfilename = sys.argv[1:-1], sys.argv[-1]
>
> for inputfilename in inputfilenames:
>
>     inputfile = open(inputfilename,'r')
>     outputfile = open(outputfilename, "w")
>     for ln in inputfile.readlines():
>         words = string.split(ln)
>         if len(words) >= 2:
> #	    print (words[1])
>   	    outputfile.write(words[1])
>
> When I use just print it prints out fine. Each on a dffrent line just
> the way I want it. But writing the file its all on one line. How do I
> get the data to goto new lines in the new file?
>
>
> Alex Nordhus
> Copy and Paste !
> http://www.pasteaway.com

Everyone else solved the "+'\n'" issue; but just as a nit, you should
use the ".split()" method on the string object ("ln").  In other words,
replace:

words = string.split(ln)
with
words = ln.split()



From dalke at dalkescientific.com  Wed May 11 15:48:21 2005
From: dalke at dalkescientific.com (Andrew Dalke)
Date: Wed, 11 May 2005 19:48:21 GMT
Subject: Need a little parse help
References: <mailman.321.1115775576.29826.python-list@python.org>
Message-ID: <pan.2005.05.11.19.48.22.653781@dalkescientific.com>

Delaney, Timothy C (Timothy) wrote:
> Remember, finalisers are not called when Python exits. So if you don't
> explicitly close the file you are *writing* to, it may not be flushed
> before being closed (by the OS because the process no longer exists).

Wrong.

% python
Python 2.3 (#1, Sep 13 2003, 00:49:11) 
[GCC 3.3 20030304 (Apple Computer, Inc. build 1495)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> class ABC:
...   def __del__(self):
...     print "I am here!"
... 
>>> abc = ABC()
>>> del abc
I am here!
>>> abc = ABC()
>>> import sys
>>> sys.exit()
I am here!
% 

There's documentation somewhere that describes what occurs
during Python's exit, but I can't find it right now.

				Andrew
				dalke at dalkescientific.com



From harlinseritt at yahoo.com  Mon May  2 18:00:39 2005
From: harlinseritt at yahoo.com (Harlin Seritt)
Date: 2 May 2005 15:00:39 -0700
Subject: Using wildcards...
In-Reply-To: <d555go$sbq$1@dojima-n0.hi-ho.ne.jp>
References: <1115031662.593097.172810@z14g2000cwz.googlegroups.com>
	<d555go$sbq$1@dojima-n0.hi-ho.ne.jp>
Message-ID: <1115071239.414396.141620@z14g2000cwz.googlegroups.com>

George that is what I'm looking for. Thanks, Harlin



From case.nelson at gmail.com  Mon May  2 18:50:48 2005
From: case.nelson at gmail.com (snoe)
Date: 2 May 2005 15:50:48 -0700
Subject: Mouseclick
In-Reply-To: <1115065280.936189.67050@o13g2000cwo.googlegroups.com>
References: <1e140f34.0505021030.9f615dc@posting.google.com>
	<mailman.41.1115059746.6583.python-list@python.org>
	<1115065280.936189.67050@o13g2000cwo.googlegroups.com>
Message-ID: <1115074248.832660.262510@f14g2000cwb.googlegroups.com>

I did this a little while ago, there's some setup stuff in here for
sending keyboard commands as well. Coercing the structs into python was
the hardest part. Basically Click(x,y) moves the mouse to the specified
spot on the screen (not window) sends a mouse down followed by mouse up
event then returns to your original position. Sorry for lack of
comments.


from ctypes import *
import time


PUL = POINTER(c_ulong)
class KeyBdInput(Structure):
    _fields_ = [("wVk", c_ushort),
             ("wScan", c_ushort),
             ("dwFlags", c_ulong),
             ("time", c_ulong),
             ("dwExtraInfo", PUL)]

class HardwareInput(Structure):
    _fields_ = [("uMsg", c_ulong),
             ("wParamL", c_short),
             ("wParamH", c_ushort)]

class MouseInput(Structure):
    _fields_ = [("dx", c_long),
             ("dy", c_long),
             ("mouseData", c_ulong),
             ("dwFlags", c_ulong),
             ("time",c_ulong),
             ("dwExtraInfo", PUL)]

class Input_I(Union):
    _fields_ = [("ki", KeyBdInput),
              ("mi", MouseInput),
              ("hi", HardwareInput)]

class Input(Structure):
    _fields_ = [("type", c_ulong),
             ("ii", Input_I)]

class POINT(Structure):
    _fields_ = [("x", c_ulong),
             ("y", c_ulong)]

def Click(x,y):

    orig = POINT()

    windll.user32.GetCursorPos(byref(orig))

    windll.user32.SetCursorPos(x,y)

    FInputs = Input * 2
    extra = c_ulong(0)

    ii_ = Input_I()
    ii_.mi = MouseInput( 0, 0, 0, 2, 0, pointer(extra) )

    ii2_ = Input_I()
    ii2_.mi = MouseInput( 0, 0, 0, 4, 0, pointer(extra) )

    x = FInputs( ( 0, ii_ ), ( 0, ii2_ ) )

    windll.user32.SendInput(2, pointer(x), sizeof(x[0]))

    return orig.x, orig.y



From PPNTWIMBXFFC at spammotel.com  Tue May 10 05:28:20 2005
From: PPNTWIMBXFFC at spammotel.com (Marco Aschwanden)
Date: Tue, 10 May 2005 11:28:20 +0200
Subject: [ANN] new version of rur-ple (0.8.5)
References: <d5pahi$6pv$4@sea.gmane.org>
Message-ID: <opsqjy9ipwc87q46@famasm>

On Tue, 10 May 2005 00:49:40 -0300, Andr? Roberge  
<andre.roberge at gmail.com> wrote:

> Learning to program computer should be fun, for adults and children
> alike. RUR-PLE is an environment designed to help you learn computer
> programming using the language Python. To use RUR-PLE, you need
> wxPython. You can learn more about RUR-PLE or you can go to the download
> page.

Surrender to Python - Resistance is futile! This is a fine piece of  
introduction!
Thanks for your efforts,
Marco



From heiko.wundram at ceosg.de  Mon May  2 08:50:10 2005
From: heiko.wundram at ceosg.de (Heiko Wundram)
Date: Mon, 2 May 2005 14:50:10 +0200
Subject: Python sockets and recvmsg
Message-ID: <200505021450.10730.heiko.wundram@ceosg.de>

Hi all!

I've read up on unix domain sockets, and I've seen that you can send out of 
bound messages such as sending the processes credentials over the socket. 
Receiving this requires to call recvmsg, which seems to be unavailable on the 
standard Python socket type.

How would you go about implementing this functionality? I don't think that a 
standard recv() does what I want...

--- Heiko.


From hpk at trillke.net  Sun May 22 13:23:49 2005
From: hpk at trillke.net (holger krekel)
Date: Sun, 22 May 2005 19:23:49 +0200
Subject: first release of PyPy
In-Reply-To: <b322b4e605052210184db964ba@mail.gmail.com>
References: <mailman.304.1116724468.8733.python-list@python.org>
	<7x64xc10pl.fsf@ruckus.brouhaha.com>
	<b322b4e605052210184db964ba@mail.gmail.com>
Message-ID: <20050522172349.GB14182@solar.trillke.net>

On Sun, May 22, 2005 at 19:18 +0200, ionel wrote:
> this is interesting 
> anyway i'm to lazy to read so i'll just ask:
> can PyPy at the current state of develepment help me improve my python 
> programs? (speed)

no, it can't at this stage.  You might check out Psyco, 
the specializing compiler for Python: http://psyco.sf.net

    holger


From peter at engcorp.com  Fri May 27 09:18:17 2005
From: peter at engcorp.com (Peter Hansen)
Date: Fri, 27 May 2005 09:18:17 -0400
Subject: write to the same file from multiple processes at the same time?
In-Reply-To: <roy-29C1D4.09142527052005@reader1.panix.com>
References: <e3617$429713d7$3eb01f24$9096@news.flashnewsgroups.com>
	<roy-29C1D4.09142527052005@reader1.panix.com>
Message-ID: <XOqdnU5dNq_vgwrfRVn-rg@powergate.ca>

Roy Smith wrote:
> gabor <gabor at nekomancer.net> wrote:
> On the other hand, you said that each process will be writing a single line 
> of output at a time.  If you call flush() after each message is written, 
> that should be enough to ensure that the each line gets written in a single 
> write system call, which in turn should be good enough to ensure that 
> individual lines of output are not scrambled in the log file.

Unfortunately this assumes that the open() call will always succeed, 
when in fact it is likely to fail sometimes when another file has 
already opened the file but not yet completed writing to it, AFAIK.

> If you want to do better than that, you need to delve into OS-specific 
> things like the flock function in the fcntl module on unix.

The OP was probably on the right track when he suggested that things 
like SQLite (conveniently wrapped with PySQLite) had already solved this 
problem.

-Peter


From ville at spammers.com  Mon May  2 09:43:51 2005
From: ville at spammers.com (Ville Vainio)
Date: 02 May 2005 16:43:51 +0300
Subject: BitKeeper for Python?
References: <IOade.1185051$Xk.343206@pd7tw3no>
	<slrnd7bsn8.pa3.nick@irishsea.home.craig-wood.com>
	<87ll6xaizm.fsf@cenderis.demon.co.uk>
Message-ID: <du7zmvdu4iw.fsf@mozart.cc.tut.fi>

>>>>> "Bruce" == Bruce Stephens <bruce+usenet at cenderis.demon.co.uk> writes:

    Bruce> Nick Craig-Wood <nick at craig-wood.com> writes:
    Bruce> [...]

    >> You could try Mercurial
    >> 
    >> http://www.selenic.com/mercurial/

    Bruce> Or Codeville, also written in Python.

Or bazaar-ng, also written in python.

    Bruce> Codeville's said to be pretty usable.

Ditto, through the repo format has not been stabilized yet.

-- 
Ville Vainio   http://tinyurl.com/2prnb


From http  Fri May 20 16:15:48 2005
From: http (Paul Rubin)
Date: 20 May 2005 13:15:48 -0700
Subject: Is Python suitable for a huge, enterprise size app?
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>
	<1116443474.565264.176640@g44g2000cwa.googlegroups.com>
	<7xd5rn93zi.fsf@ruckus.brouhaha.com>
	<mailman.198.1116493706.8733.python-list@python.org>
	<d6ij1j$s96$1@panix3.panix.com>
	<7xpsvm6h7s.fsf@ruckus.brouhaha.com>
	<mailman.238.1116572495.8733.python-list@python.org>
Message-ID: <7xwtptbqmj.fsf@ruckus.brouhaha.com>

"Fredrik Lundh" <fredrik at pythonware.com> writes:
> this has been reported before, and it won't get fixed (unless you're
> volunteering to add Python-compatible garbage collection to Tk, that is).

Yeah, I think I understand what the issue is.  I can think of some
kludgy possible fixes but I assume they've been thought about already
and rejected.  The workaround of making the application save an extra
reference isn't too bad, but all relevant docs that say anything about
these images should mention the requirement emphatically.


From Scott.Daniels at Acm.Org  Sun May 29 13:33:57 2005
From: Scott.Daniels at Acm.Org (Scott David Daniels)
Date: Sun, 29 May 2005 10:33:57 -0700
Subject: 2D vector graphics Problem
In-Reply-To: <4299fa7e$0$17106$5fc30a8@news.tiscali.it>
References: <4299c4de$0$17099$5fc30a8@news.tiscali.it>
	<4299eb5d$1@nntp0.pdx.net>
	<4299fa7e$0$17106$5fc30a8@news.tiscali.it>
Message-ID: <4299f645$1@nntp0.pdx.net>

Karl Max wrote:
> "Scott David Daniels" <Scott.Daniels at Acm.Org> ha scritto nel messaggio 
>>... Your equation for y uses the new x, not the old x....
> De hi hi ho. I must sleep some more hours at night... ;-)
>>Be more free with names.
> 
> Well, I often report book formulas, and forget renaming variables to more 
> comprehensive language. Thank you for your help.

I was trying to give you a couple of ways to avoid similar problems in
the future.  The way to get better at programming is to:
    Figure out why you made the mistake.
    See if you can change the way you work to prevent such problems.
    If you can't prevent the problems:
        Try to make the problem rare.
        Try to catch the problems early.

It's not so much that I want you to do it my way; I was just suggesting
a couple of ways to improve your own process.

--Scott David Daniels
Scott.Daniels at Acm.Org


From NOSPAM.Blue27Jay at shaw.ca  Sun May  8 23:13:38 2005
From: NOSPAM.Blue27Jay at shaw.ca (DaveInSidney)
Date: Mon, 09 May 2005 03:13:38 GMT
Subject: Using a Scripting Language as Your Scripting Language
Message-ID: <CzAfe.1287819$8l.845135@pd7tw1no>

FWIW: 
http://www.informit.com/guides/content.asp?g=windowsserver&seqNum=183&rl=1

......................................................................
Remove NOSPAM. before replying

Pursuant to U.S. code, title 47, Chapter 5, Subchapter II, Section 227
Any and all unsolicited commercial E-mail sent to this address is
subject to a fee of US $500.00. E-Mailing denotes acceptance of these
terms. Consult <http://www.law.cornell.edu/uscode/47/227.html> for
details.







From mj at zopatista.com  Wed May  4 18:58:21 2005
From: mj at zopatista.com (Martijn Pieters)
Date: Thu, 05 May 2005 00:58:21 +0200
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <G9cee.81452$4_1.5246075@phobos.telenet-ops.be>
References: <d4u60o$akh$1@news2.netvision.net.il>	<mailman.47.1114818531.14961.python-list@python.org>	<1114924100.296223.114020@g14g2000cwa.googlegroups.com>	<1114927892.321086.60190@z14g2000cwz.googlegroups.com>	<zX%ce.78213$ft1.5056576@phobos.telenet-ops.be>	<Zj2de.78345$a42.5091422@phobos.telenet-ops.be>	<8764y29x3m.fsf@uwo.ca>	<877jihc7qv.fsf@uwo.ca>	<mailman.18.1115242075.29826.python-list@python.org>	<9Ibee.81433$AX1.5235770@phobos.telenet-ops.be>	<mailman.23.1115245662.29826.python-list@python.org>
	<G9cee.81452$4_1.5246075@phobos.telenet-ops.be>
Message-ID: <4279538D.3040009@zopatista.com>

Roel Schroeven wrote:
> Unless Martijn Pieters here and mjpieters in the Python Challenge forum
> are two differen persons, you've found it in the meantime, haven't you?

Yup, I found it. How evil and devious. I found the hint without
Googling, BTW, but can see how Google would have led you to the
solution. I for one, will never again believe the claim there is no more
evils..

Martijn Pieters
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From usenet at terabytemusic.cjb.net  Wed May  4 10:02:05 2005
From: usenet at terabytemusic.cjb.net (DJTB)
Date: Wed, 04 May 2005 16:02:05 +0200
Subject: A faster method to generate a nested list from a template?
Message-ID: <117hlf2rvh6q28e@corp.supernews.com>

Hi all,

I'm new to Python. I'm trying to create a fast function to do the following:

t = [['a1','a2'],['b1'],['c1'],['d1']]
l = [1,2,3,4,5]
>>> create_nested_list(t,l)
[[1, 2], [3], [4], [5]]

t is some sort of template. This is what I have now:

def create_nested_list(template,l_orig):
    '''Uses a template to create a new list
    
    t = [['a1','a2'],['b1'],['c1'],['d1']]
    l = [1,2,3,4,5]
    >>> create_nested_list(t,l)
    [[1, 2], [3], [4], [5]]
    '''
    
    tl = map(len, template)
    # Input size check
    if reduce(lambda x,y: x+y, tl) != len(l_orig):
        raise "Wrong input size"
    
    l = l_orig
    new_nested_list = []
    for x in tl:
        q = []
        i = 0
        while i < x:
            q.append(l.pop(0))
            i += 1
        new_nested_list.append(q)
    return new_nested_list 

I'd like to know if it is possible to make this faster (using Python magic I
don't know of yet), because this function will be called a lot
('constantly').

Thanks in advance,
Stan.




From timothy at open-networks.net  Wed May  4 19:11:49 2005
From: timothy at open-networks.net (Timothy Smith)
Date: Thu, 05 May 2005 09:11:49 +1000
Subject: utf encoding error
Message-ID: <427956B5.3080100@open-networks.net>

hi there, this one is in relation to my py2exe saga.

when i compile a package using py2exe i get the error msg below, if i 
just run the py files it doesn't error, so i assume pysvn is trying to 
use something thats not being included in the build. only i have no idea 
where to start looking.

Traceback (most recent call last):
  File "Main.pyc", line 819, in ValidateLogin
  File "Main.pyc", line 861, in ShowMainFrameItems
LookupError: unknown encoding: utf-8


and here is my setup.py for py2exe for good measure

from distutils.core import setup
import py2exe
           
package_dir = ['c:\python23\reportlab', 'c:\python23\lib',
               'Z:\Projects\PubWare\trunk\python']
               
setup(windows=[ "Z:\\Projects\\PubWare\\trunk\\python\\PubWare.py"])


From python at rcn.com  Thu May 26 01:56:14 2005
From: python at rcn.com (Raymond Hettinger)
Date: 25 May 2005 22:56:14 -0700
Subject: Checking for a full house
References: <1117071824.882035.250710@g49g2000cwa.googlegroups.com>
	<1117085950.739186.14240@z14g2000cwz.googlegroups.com>
Message-ID: <1117086974.854184.5930@g43g2000cwa.googlegroups.com>

Your use case for gathering roll statistics probably needs a more
general solution:

hands = {
    (1,1,1,1,1): 'nothing',
    (1,1,1,2): 'one pair',
    (1,2,2): 'two pair',
    (1,1,3): 'three of a kind',
    (2,3): 'full house',
    (1,4): 'four of a kind',
    (5): 'flush (five of a kind)'
}

def eval_hand(hand):
    counts = tuple(sorted(hand.count(card) for card in set(hand)))
    return hands.get(counts, 'misdeal')


Raymond Hettinger



From rupole at hotmail.com  Fri May 20 22:31:54 2005
From: rupole at hotmail.com (Roger Upole)
Date: Fri, 20 May 2005 22:31:54 -0400
Subject: how to config a comserver in a customize dll?
References: <mailman.237.1116556324.8733.python-list@python.org>
Message-ID: <428e9e84$1_1@spool9-west.superfeed.net>

If you have a custom COM dll, you should just register it as normal.
I'm not sure why you would want to register it as a python COM
server.  Unless you've duplicated the whole framework that allows
com servers to be written in python ?

          Roger


"????????" <dreamingpython at 163.com> wrote in message 
news:mailman.237.1116556324.8733.python-list at python.org...
> When i use the below code to create a comserver on Windows OS??i find that
> the com was configed in the file
> python23com.dll,why? if i want to config it in my customize dll,how should 
> i
> do? thks
>
> class TestPythonCom:
>    _public_methods_ = [ 'SplitString' ]
>    _reg_progid_ = "TestPythonCom.Application"
>    # NEVER copy the following ID
>    # Use "print pythoncom.CreateGuid()" to make a new one.
>    _reg_clsid_ = "{93D78ABA-1F6C-4B1C-97C7-C3700511415A}"
>
>    def SplitString(self, val):
>        return val
>
>
> 



----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups
----= East and West-Coast Server Farms - Total Privacy via Encryption =----


From http  Sun May  1 13:09:56 2005
From: http (Paul Rubin)
Date: 01 May 2005 10:09:56 -0700
Subject: Multiple threads in a GUI app (wxPython),
	communication between worker thread and app?
References: <1114966991.337599.194500@f14g2000cwb.googlegroups.com>
Message-ID: <7xsm1627q3.fsf@ruckus.brouhaha.com>

"fooooo" <phark52 at yahoo.com> writes:
> How would I get the worker thread to open a GUI window in the main GUI
> thread? After that GUI window is open, how can I send and recv messages
> from/to the GUI window?

First of all the favorite Pythonic way to communicate between threads
is with synchronized queues--see the Queue module.  Have the worker
thread put stuff on a queue and have the main GUI thread read from it.

Secondly, I don't know about wxPython, but in tkinter you have to
resort to a kludge in order for the gui thread to handle gui events
and also notice stuff on a queue.  There's a tkinter command to run
some function after a specified time (say 50 msec).  So you'd set that
timeout to check the queue and restart the timer, which means the gui
would check 20x a second for updates from the worker threads.  When it
got such an update, it would create a new window or whatever.  

It could be that wxPython has a cleaner way of doing this, or you
might have to do something similar.  Python thread support seems to
have been something of an afterthought and there's a lot of weirdness
like this to deal with.


From gabor at nekomancer.net  Tue May 31 03:54:29 2005
From: gabor at nekomancer.net (gabor)
Date: Tue, 31 May 2005 09:54:29 +0200
Subject: write to the same file from multiple processes at the same time?
In-Reply-To: <8664x0twf2.fsf@guru.mired.org>
References: <mailman.207.1117233035.18027.python-list@python.org>
	<b4df2$429ad977$3eb01f24$10471@news.flashnewsgroups.com>
	<32e45$429b073a$3eb01f24$23675@news.flashnewsgroups.com>
	<8664x0twf2.fsf@guru.mired.org>
Message-ID: <8b7a5$429c1893$3eb01f24$1972@news.flashnewsgroups.com>

Mike Meyer wrote:
> gabor <gabor at nekomancer.net> writes:
> 
> 
>>ok, i ended up with the following code:
>>
>>def syncLog(filename,text):
>>     f = os.open(filename,os.O_WRONLY | os.O_APPEND)
>>     fcntl.flock(f,fcntl.LOCK_EX)
>>     os.write(f,text)
>>     #FIXME: what about releasing the lock?
>>     os.close(f)
>>
>>it seems to do what i need ( the flock() call waits until he can get
>>access).. i just don't know if i have to unlock() the file before i
>>close it..
> 
> 
> The lock should free when you close the file descriptor. Personally,
> I'm a great believer in doing things explicitly rather than
> implicitly, 


> and would add the extra fcntl.flock(f, fcntl.LOCK_UN) call
> before closing the file.

done :)

gabor


From tim.leslie at gmail.com  Tue May 31 06:21:18 2005
From: tim.leslie at gmail.com (Tim Leslie)
Date: Tue, 31 May 2005 20:21:18 +1000
Subject: Generalized Linear Least Squares Problems
In-Reply-To: <1117534369.263476.120510@o13g2000cwo.googlegroups.com>
References: <1117534369.263476.120510@o13g2000cwo.googlegroups.com>
Message-ID: <d32b45350505310321327809ab@mail.gmail.com>

On 31 May 2005 03:12:49 -0700, venkat <vvenkatagr at yahoo.com> wrote:
> Hi,
> 
> I want to solve linear least sqaure problem( min||c-Ax||2 subject to
> Bx=d ). How do I do it in python. lapack has a routine for doing this
> (DGGLSE). Can I access this from python?
>

Check out scipy, in particular the linear algebra package.

http://www.scipy.org/documentation/apidocs/scipy/scipy.linalg.html

Cheers,

Tim
 
> TIA,
> venkat.
> 
> --
> http://mail.python.org/mailman/listinfo/python-list
>


From guettli at thomas-guettler.de  Thu May 26 10:05:24 2005
From: guettli at thomas-guettler.de (Thomas Guettler)
Date: Thu, 26 May 2005 16:05:24 +0200
Subject: File list from listdir or shell?
References: <1117114300.592398.92440@f14g2000cwb.googlegroups.com>
Message-ID: <pan.2005.05.26.14.05.24.843710@thomas-guettler.de>

Am Thu, 26 May 2005 06:31:40 -0700 schrieb qwweeeit:

Hi,

> ls -1 *.py (for the filenames only) or

This can be done with the module "glob" of the standard library.

 HTH,
  Thomas

-- 
Thomas G?ttler, http://www.thomas-guettler.de/




From rhall at thiess.com.au  Wed May 18 09:25:15 2005
From: rhall at thiess.com.au (Bloke)
Date: 18 May 2005 06:25:15 -0700
Subject: SSL (HTTPS) with 2.4
In-Reply-To: <grGie.3984$uR4.2802@newsread2.news.atl.earthlink.net>
References: <1116392416.139727.84630@g49g2000cwa.googlegroups.com>
	<428AD4D1.8030405@v.loewis.de>
	<1116396878.995648.206820@g49g2000cwa.googlegroups.com>
	<1116406256.213128.68180@f14g2000cwb.googlegroups.com>
	<grGie.3984$uR4.2802@newsread2.news.atl.earthlink.net>
Message-ID: <1116422715.320683.228810@g49g2000cwa.googlegroups.com>

Yes,  on looking into it, sockets.ssl is not installed with
activepython, so it doesn't recognise https.  So I have removed it, and
reinstalled the v 2.4.1 which I downloaded from www.python.org .  This
leaves me with with the problem where the script 'hangs' for a long
time, then returns:

Traceback (most recent call last):
  File "C:\Documents and
Settings\rhall\Desktop\software\python\auth_example_5.py", line 18, in
?
    f = urllib2.urlopen('https://www.directshares.com.au/')
  File "C:\Python24\Lib\urllib2.py", line 130, in urlopen
    return _opener.open(url, data)
  File "C:\Python24\Lib\urllib2.py", line 358, in open
    response = self._open(req, data)
  File "C:\Python24\Lib\urllib2.py", line 376, in _open
    '_open', req)
  File "C:\Python24\Lib\urllib2.py", line 337, in _call_chain
    result = func(*args)
  File "C:\Python24\Lib\urllib2.py", line 1029, in https_open
    return self.do_open(httplib.HTTPSConnection, req)
  File "C:\Python24\Lib\urllib2.py", line 996, in do_open
    raise URLError(err)
URLError: <urlopen error (8, 'EOF occurred in violation of protocol')>

I'm stuck...



From rhall at thiess.com.au  Sun May 22 20:33:58 2005
From: rhall at thiess.com.au (Bloke)
Date: 22 May 2005 17:33:58 -0700
Subject: SSL (HTTPS) with 2.4
In-Reply-To: <1116627976.845517.268370@z14g2000cwz.googlegroups.com>
References: <1116392416.139727.84630@g49g2000cwa.googlegroups.com>
	<428AD4D1.8030405@v.loewis.de>
	<1116396878.995648.206820@g49g2000cwa.googlegroups.com>
	<1116406256.213128.68180@f14g2000cwb.googlegroups.com>
	<grGie.3984$uR4.2802@newsread2.news.atl.earthlink.net>
	<1116422715.320683.228810@g49g2000cwa.googlegroups.com>
	<1116424363.953180.79260@g47g2000cwa.googlegroups.com>
	<1116424660.917136.79680@g47g2000cwa.googlegroups.com>
	<428b7bc5$0$7346$9b622d9e@news.freenet.de>
	<1116463961.944713.210860@g49g2000cwa.googlegroups.com>
	<mailman.208.1116513082.8733.python-list@python.org>
	<1116524774.606167.98240@f14g2000cwb.googlegroups.com>
	<1116550788.207740.171780@o13g2000cwo.googlegroups.com>
	<mailman.241.1116588685.8733.python-list@python.org>
	<1116627976.845517.268370@z14g2000cwz.googlegroups.com>
Message-ID: <1116808438.811166.49180@g49g2000cwa.googlegroups.com>

Andrew and John,

Any chance of you sending me your code to have a look at?

Rob



From mefjr75 at hotmail.com  Mon May  2 16:17:26 2005
From: mefjr75 at hotmail.com (M.E.Farmer)
Date: 2 May 2005 13:17:26 -0700
Subject: Can't get compression in Python zip script.
References: <d55b11+flng@eGroups.com>
	<mailman.34.1115045555.6583.python-list@python.org>
Message-ID: <1115065046.071440.62630@z14g2000cwz.googlegroups.com>

Steve Holden wrote:
> deejaay at swbell.net wrote:
> > Hello,
> > I following an example on how to zip files from the www.devshed.com

> > site.
> > I can create a zip package, however I am not getting any
compression.
> > 120M file stays 120M within the zip package.
> > I need to know how to set or activate the compression values.
> > here is the code I'm using:
> >
> >
> >>import zipfile
> >>zip = zipfile.ZipFile('<path/zipfilename.zip>', 'w')
> >>zip.write('<path/filename.txt>')
> >>zip.close()
> >
> >
> > Any help would be gratly appreciated
> >
> It's not that difficult. The zipfile module uses null compression by
> deafult, so you need to change the second line to read
>
> zip = zipfile.ZipFile('<path/zipfilename.zip>', 'w',
zipfile.ZIP_DEFLATED)
>
> That will create a comrpessed zip file.
>
> regards
>   Steve
> --
> Steve Holden        +1 703 861 4237  +1 800 494 3119
> Holden Web LLC             http://www.holdenweb.com/
> Python Web Programming  http://pydish.holdenweb.com/
Ooops! Never tried it at the interpreter, I should have, sorry.
Glad to see you got my back Steve;)
I should have just pointed here:
http://docs.python.org/lib/module-zipfile.html

>>> a = zipfile.ZipFile('c:\tmp\z.zip', 'w', compression=1)
Traceback (most recent call last):
  File "<input>", line 1, in ?
  File "C:\Python22\Lib\zipfile.py", line 169, in __init__
    raise RuntimeError, "That compression method is not supported"
RuntimeError: That compression method is not supported
>>> a = zipfile.ZipFile('c:\tmp\z.zip', 'w', compression=8)

I saw compression=0 and assumed that 1 would mean true, but no!
zipfile.ZIP_DEFLATED = 8, defies logic, it is the only compression type
why not accept any non zero as compression.
Got any answers to the problems I outlined or have they been fixed yet
?
M.E.Farmer



From ivanlan at pauahtun.org  Sun May 29 08:33:38 2005
From: ivanlan at pauahtun.org (Ivan Van Laningham)
Date: Sun, 29 May 2005 06:33:38 -0600
Subject: the problem with cgi
References: <1117250714.387429.73450@g44g2000cwa.googlegroups.com>
	<20050528233941.480946300.EP@zomething.com>
Message-ID: <4299B6A2.E0C28BF5@pauahtun.org>

Hi All--

EP wrote:
> 
> > Has anyone seen that problem with running a python cgi script in a
> > server?
> > It takes you to myspace.com/redmartian or something. Anyway, does
> > anyone know when this problem will be fixed?
> 
> Xah Lee is working on it.
> 

Oh, that's reassuring.  Does he have his tinfoil hat on?

Metta,
Ivan

PS:  Sorry, I meant, "Does he have his fucking tinfoil hat on?"
----------------------------------------------
Ivan Van Laningham
God N Locomotive Works
http://www.andi-holmes.com/
http://www.foretec.com/python/workshops/1998-11/proceedings.html
Army Signal Corps:  Cu Chi, Class of '70
Author:  Teach Yourself Python in 24 Hours


From martin at v.loewis.de  Sat May 21 17:53:31 2005
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Sat, 21 May 2005 23:53:31 +0200
Subject: python24.zip
In-Reply-To: <x7hdgw2zqi.fsf@handshake.de>
References: <mailman.249.1116595092.8733.python-list@python.org>
	<428e0cc3$0$29954$9b622d9e@news.freenet.de>
	<x7hdgw2zqi.fsf@handshake.de>
Message-ID: <428faddd$0$26322$9b622d9e@news.freenet.de>

Dieter Maurer wrote:
> The question was:
> 
>    "should python start up with **non-existent** objects on the path".
> 
> I think there is no reason why path needs to contain an object
> which does not exist (at the time the interpreter starts).

There is. When the interpreter starts, it doesn't know what object
do or do not exist. So it must put python24.zip on the path
just in case.

> In your use case, "python24.zip" does exist and therefore may
> be on the path. When "python24.zip" does not exist, it does
> not contain anything and especially not "site.py".

Yes, but the interpreter cannot know in advance whether
python24.zip will be there when it starts.

> I recently analysed excessive import times and
> saw thousands of costly and unneccesary filesystem operations due to:

Hmm. In my Python 2.4 installation, I only get 154 open calls, and
63 stat calls on an empty Python file. So somebody must have messed
with sys.path really badly if you saw thoughsands of file operations
(although I wonder what operating system you use so that failing
open operations are costly; most operating systems should do them
very efficiently).

Regards,
Martin


From alexk at mailinator.com  Sun May 15 04:06:51 2005
From: alexk at mailinator.com (alexk)
Date: 15 May 2005 01:06:51 -0700
Subject: pydoc for global variables
Message-ID: <1116144411.094405.150290@g44g2000cwa.googlegroups.com>

Hi,
Is it possible to "pydoc" global variables also ?
It just stucks them into the "DATA" section.

Thanks, Alex



From shane at hathawaymix.org  Tue May 31 16:56:59 2005
From: shane at hathawaymix.org (Shane Hathaway)
Date: Tue, 31 May 2005 14:56:59 -0600
Subject: working with pointers
In-Reply-To: <d7ibjg$8en$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
References: <d7iapk$6ck$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>	<JJSdnXLcZdUsLQHfRVn-1w@comcast.com>
	<d7ibjg$8en$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
Message-ID: <429CCF9B.7050702@hathawaymix.org>

Michael wrote:
> sorry, I'm used to working in c++ :-p
> 
> if i do
> a=2
> b=a
> b=0
> then a is still 2!?
> 
> so when do = mean a reference to the same object and when does it mean make
> a copy of the object??

To understand this in C++ terms, you have to treat everything, including
simple integers, as a class instance, and every variable is a reference
(or "smart pointer".)  The literals '0' and '2' produce integer class
instances rather than primitive integers.  Here's a reasonable C++
translation of that code, omitting destruction issues:

class Integer
{
private:
    int value;
public:
    Integer(int v) { value = v; }
    int asInt() { return value; }
}

void test()
{
    Integer *a, *b;
    a = new Integer(2);
    b = a;
    b = new Integer(0);
}

In that light, do you see why a is still 2?

Shane


From modelnine at ceosg.de  Sat May 21 05:06:19 2005
From: modelnine at ceosg.de (Heiko Wundram)
Date: Sat, 21 May 2005 11:06:19 +0200
Subject: Can you introduce some book about python?
In-Reply-To: <1116658740.355998.267080@z14g2000cwz.googlegroups.com>
References: <mailman.4989.1116624266.8732.python-list@python.org>
	<mailman.275.1116638412.8733.python-list@python.org>
	<1116658740.355998.267080@z14g2000cwz.googlegroups.com>
Message-ID: <200505211106.22142.modelnine@ceosg.de>

Am Samstag, 21. Mai 2005 08:59 schrieb rdsteph at mac.com:
> <snip>

Quoting a senseless quote, bravo!

...

wasting-bandwith-sure-is-fun-over-ISDN-'ly yours,

-- 
--- Heiko.
  see you at: http://www.stud.mh-hannover.de/~hwundram/wordpress/
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From fphsml at gmail.com  Thu May  5 21:47:36 2005
From: fphsml at gmail.com (James)
Date: 5 May 2005 18:47:36 -0700
Subject: Python at MS Event!
Message-ID: <1115344056.135846.153730@f14g2000cwb.googlegroups.com>

Just back from an MS event. They normally don't show anything non-MS.
This time they showed a Python client (interpreter in interactive mode)
interop with a .NET web service. They even had a few nice things to say
of Python.

Of course, then the rest of the presentation was about WSE which
doesn't interop with anything currently.



From dochtman at cs.vu.nl  Sun May 29 05:01:56 2005
From: dochtman at cs.vu.nl (Dirkjan Ochtman)
Date: Sun, 29 May 2005 11:01:56 +0200
Subject: Creating dict from keys and values
Message-ID: <d7c0d5$nv0$1@star.cs.vu.nl>

Hi there,

I'm looking for an intuitive way of creating a dict from what the 
dict.keys() and dict.values() will return (two lists).

Currently, I'm using this code:

> d = {}
> for i in range(len(data)):
> 	d[header[i]] = data[i]

But this feels kind of inelegant. So: is there a better way?

TIA,

Dirkjan


From p at ulmcnett.com  Fri May 27 14:01:20 2005
From: p at ulmcnett.com (Paul McNett)
Date: Fri, 27 May 2005 11:01:20 -0700
Subject: Python/Excel AddIn (was:Re: Does Python have a Template::Extract
	equivalent from Perl's CPAN)
In-Reply-To: <1117216401.626017.218080@g49g2000cwa.googlegroups.com>
References: <1117215841.123847.234300@o13g2000cwo.googlegroups.com>
	<1117216401.626017.218080@g49g2000cwa.googlegroups.com>
Message-ID: <42976070.3030002@ulmcnett.com>

Please start a new thread when appropriate.

combinational.logic $ soc-ip.com wrote:
> Can you please elaborate on how to use Python for MS Excel AddIn
> development? Is this easy to do?  I would love to be able to create
> custom extensions to Excel using python!  IMHO Python is much better
> than Perl due to its OOP features.

Do you mean automating Excel sheets using Python? If so, you need to get 
a COM interface from Python (see Mark Hammond's win32all Python 
extensions for this), and you need to figure out the proper com calls, 
which is easiest by going into Excel and recording a macro, and then 
taking a look at the vbscript the macro recorded.

-- 
Paul McNett
http://paulmcnett.com



From flamesrock at gmail.com  Tue May 10 22:12:53 2005
From: flamesrock at gmail.com (flamesrock)
Date: 10 May 2005 19:12:53 -0700
Subject: Bandwith Shaping
In-Reply-To: <mailman.19.1115243665.29826.python-list@python.org>
References: <mailman.19.1115243665.29826.python-list@python.org>
Message-ID: <1115777573.089458.102050@g43g2000cwa.googlegroups.com>

sweet, that twisted thing is exactly what I was looking for :)

-thanks for all the replies



From steve at holdenweb.com  Mon May  2 22:03:31 2005
From: steve at holdenweb.com (Steve Holden)
Date: Mon, 02 May 2005 22:03:31 -0400
Subject: adodb, sql server, and last insert id
In-Reply-To: <1115078248.036051.182310@l41g2000cwc.googlegroups.com>
References: <1115078248.036051.182310@l41g2000cwc.googlegroups.com>
Message-ID: <d56lph$h0i$1@sea.gmane.org>

jdonnell wrote:
> I'm not very familiar with sql server or adodb. I'm writing a python
> script that uses adodb as described at http://www.ecp.cc/pyado.html,
> but I can't figure out how to get the id of my last insert.
> 
The classic method, IIRC, is as follows for SQL Server and recent 
versions of Jet:

     curs.execute("SELECT @@IDENTITY")
     id = curs.fetchall()[0][0]

For MySQL it would be

     curs.execute("SELECT LAST_INSERT_ID()")
     id = curs.fetchall()[0][0]

regards
  Steve
-- 
Steve Holden        +1 703 861 4237  +1 800 494 3119
Holden Web LLC             http://www.holdenweb.com/
Python Web Programming  http://pydish.holdenweb.com/



From fredrik at pythonware.com  Thu May  5 16:28:50 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 5 May 2005 22:28:50 +0200
Subject: Hard times with packages and instances
References: <1115306696.185751.234020@o13g2000cwo.googlegroups.com>
Message-ID: <d5e14i$aaf$1@sea.gmane.org>

Kay Schluehr wrote:

> I wonder why the isinstance() function is sensitive about the import
> path i.e. the result depends not only on the class and the instance but
> also on how a class is imported?

isinstance uses class object identity.

if you manage to import the same thing multiple times, you'll have
multiple class objects representing the same source code, and is-
instance won't work properly.

> Example:
>
> MyPackage/ Top-level package
>       __init__.py Initialize package
>       __me__.py                 Module used for setting Python-path
>       A.py                      Use objects of ForeignPackage and
>                                 subpackages
>       ForeignPackage/ Don't touch!
>             __init__.py         Initialize package
>             B.py                Defines class B1
>       MySubPackage/ Subpackage
>             __init__.py         Initialize subpackage
>     C.py                Defines instance checker for B1 instances

in my newsreader, it looks like the C.py module is defined some-
where inbetween MyPackage and MyPackage/ForeignPackage.
what file system are you using? ;-)

(I don't have the energy to decipher your convoluted import
and path-manipulation code; but my intuition tells me that if
you flatten the hierarchy, put MyPackage and ForeignPackage
at the same level, and stop messing with the path inside the
__init__ files, your problems will just disappear).

</F>





From tim.stoop at gmail.com  Tue May 10 19:49:25 2005
From: tim.stoop at gmail.com (tim.stoop at gmail.com)
Date: 10 May 2005 16:49:25 -0700
Subject: [PyQt] browse for a directory
Message-ID: <1115768965.099878.22790@f14g2000cwb.googlegroups.com>

Hi people,

I'm trying my first little app to create a small, simple application in
Python (just to see how PyQt works and all) and I seem to get stuck. I
want to make a front-end for ImageMagick's convert for my dad. He
usually wants to send people pictures he made with his digital camera
and he needs those smaller. So I want him to be able to select a
directory and click a button to have the python-script automagically
call convert to resize the images. (Maybe later I'll make it fully
python, but this is just a test.)

But I can't find any Qt widget that enables me to browse for a
directory! I'm using qt-designer v.3.2 (from Mandriva Linux 2005LE).
Can anyone tell me where how to add a directory-browser to my little
program?

I've searched the Qt manual, but it's not in there. There doesn't seem
to be a reference for PyQt (none that I can find, any way), so I'm
stuck here...

Thanks in advance for your time.

-- 
Kind regards,
Tim Stoop



From http  Wed May 11 22:48:42 2005
From: http (Paul Rubin)
Date: 11 May 2005 19:48:42 -0700
Subject: pyvm -- faster python
References: <mailman.164.1115548611.29826.python-list@python.org>
	<1115561483.741761.212140@f14g2000cwb.googlegroups.com>
	<m102l2-9qr.ln1@home.rogerbinns.com>
	<mailman.264.1115716603.29826.python-list@python.org>
	<vu38l2-k5v.ln1@home.rogerbinns.com>
	<7xvf5qbir1.fsf@ruckus.brouhaha.com>
	<nt98l2-1e.ln1@home.rogerbinns.com>
	<7xpsvymlse.fsf@ruckus.brouhaha.com>
	<mailman.334.1115805377.29826.python-list@python.org>
Message-ID: <7xsm0tb1md.fsf@ruckus.brouhaha.com>

Stelios Xanthakis <sxanth at ceid.upatras.gr> writes:
> I didn't know much about PyPy.  It seems that pyvm is *exactly* what
> pypy needs to boost its performance.  Does pypy has the vm in python
> as well?  Does pypy have a compiler that produces 2.4 bytecodes?

Pypy makes native machine code, not bytecode.


From tzot at sil-tec.gr  Fri May 13 14:23:21 2005
From: tzot at sil-tec.gr (Christos TZOTZIOY Georgiou)
Date: Fri, 13 May 2005 21:23:21 +0300
Subject: creating words of diff lengths
References: <1116003134.531348.67830@g14g2000cwa.googlegroups.com>
Message-ID: <l3s981lrb1gp11sak3an57m6cio11mac9h@4ax.com>

Is there an echo in here?
-- 
TZOTZIOY, I speak England very best.
"Be strict when sending and tolerant when receiving." (from RFC1958)
I really should keep that in mind when talking with people, actually...


From jslowery at gmail.com  Mon May  9 04:50:45 2005
From: jslowery at gmail.com (jslowery at gmail.com)
Date: 9 May 2005 01:50:45 -0700
Subject: Python LDAP Schema Pickle
Message-ID: <1115628644.993344.242900@f14g2000cwb.googlegroups.com>

After much googling, I'm yet to see hint at the following topic.

Has anyone ever worked on supporting ldap persistance of python
objects? I'm a bit new to ldap, and I've noticed that there is a
java.schema file standardized that stores persists java objects in an
ldap directory.

I would think that this would be something that could implemented with
a pickle-like interface?

If anyone has done any kind of work on this, I'd be very interested in
looking into it and possibly helping out.



From phillip.watts at anvilcom.com  Wed May 11 11:51:02 2005
From: phillip.watts at anvilcom.com (phil)
Date: Wed, 11 May 2005 10:51:02 -0500
Subject: TAKE_FOCUS
Message-ID: <428229E6.4040900@anvilcom.com>

WM_TAKE_FOCUS does not work on WinXP ??
I was sure I had used that on win before.
Works on Linux.

I have a function I need to run when the window
gets the focus. How do you do that in Tkinter
on Win32?
Thanks



From steven.bethard at gmail.com  Fri May 13 17:23:31 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Fri, 13 May 2005 15:23:31 -0600
Subject: Replacing open builtin
In-Reply-To: <mailman.351.1115817322.29826.python-list@python.org>
References: <mailman.351.1115817322.29826.python-list@python.org>
Message-ID: <IsWdnQ23EsxPhxjfRVn-hw@comcast.com>

Jp Calderone wrote:
>  Probably not.  For example:
> 
>    >>> (1).__class__.__bases__[0].__subclasses__()[-1]('/dev/null')
>    <open file '/dev/null', mode 'r' at 0xb7df53c8>

However:

py> eval("(1).__class__.__bases__[0]"
...      ".__subclasses__()[16]('/dev/null')",
...      dict(__builtins__={}))
Traceback (most recent call last):
   File "<interactive input>", line 3, in ?
   File "<string>", line 0, in ?
IOError: file() constructor not accessible in restricted mode

Also worth noting that you can't get the builtins through a function's 
globals either:

py> eval("(1).__class__.__bases__[0]"
...      ".__subclasses__()[17].substitute.func_globals",
...      dict(__builtins__={}))
Traceback (most recent call last):
   File "<interactive input>", line 3, in ?
   File "<string>", line 0, in ?
RuntimeError: restricted attribute

I've read some of the older posts, which suggested that you could 
restore __builtins__ using a global declaration and a delete, but I 
can't reproduce that bug in current Python.

Note that even if you supply the file object as part of your 
__builtins__, the constructor is still not accessible in restricted mode:

py> eval("file('/dev/null')", dict(__builtins__=dict(file=file)))
Traceback (most recent call last):
   File "<interactive input>", line 1, in ?
   File "<string>", line 0, in ?
IOError: file() constructor not accessible in restricted mode

I believe the official stance is something like: "Well restricted mode 
probably works in a lot of cases, but we're not confident enough in it 
(having found bugs in it over and over) that we'd suggest it for 
production use."

STeVe


From cjbottaro at alumni.cs.utexas.edu  Wed May 11 14:50:36 2005
From: cjbottaro at alumni.cs.utexas.edu (Christopher J. Bottaro)
Date: Wed, 11 May 2005 13:50:36 -0500
Subject: Python Documentation (should be better?)
Message-ID: <d5tjng$kae$1@sea.gmane.org>

This post is just the culmination of my thoughts and discussions with my
coworkers on Python.  If you are not interested, please skip over it.

At my work, we are developing a product from scratch.  It is completely
modular and the modules communicate via SOAP.  Because of that, we can
implement individual modules in any language of our choosing (so long as
they have good SOAP libs).  I chose to do all mine in Python because I'm a
huge Python fan boy.  Naturally, I tried to get my coworkers to try Python. 
I made an agreement with one:  I write one of my modules in PHP and he will
write one in Python.

After we were done, we talked about the pros and cons of the languages. 
Funny, the con of Python (documentation) is PHP's strong point.  The PHP
manual is extremely easy to navigate and its search feature works great. 
Contrast that with Python, where you have to use "the tutorial" as the
manual.  Also, the tutorial is just that...a tutorial, its a NOT a manual. 
Its not organized like a manual and its not comprehensive like a manual,
hell, raw_input() isn't even mentioned in Chapter 7. Input and Output.

Now for the real kicker.  Some of the module documentation doesn't even list
simple use cases or even the entire API.  When my coworker came to me with
this complaint, my response was "oh, just load the interpreter, import the
module and call dir() on it.  Then instantiate some objects and call dir()
on them also".  My infatuation with Python had kept me from realizing the
sheer ridiculousness of that method to learn to use an API.  Needless to
say, my coworker's reaction to that statement snapped me out of it.  But
its the truth.  How many of you learn a module by starting the interpreter
and "playing" around with it and using dir()?

The next complaint isn't really about documentation.  Why isn't there a CPAN
or PEAR for Python?  So many times I've search for a module, not found it,
started to write it myself, then later stumble across it on Google...ugh!

Don't get me wrong, I love Python.  The language itself is second to none (I
haven't tried Ruby yet), but this experience has left me wondering about
the future success of Python.  Even I, a huge Python advocate, has started
to use PHP more often simply because I can find well documented,
semi-official modules very easily and learning PHP is a breeze with the
awesome PHP manual.

What do yall think?



From ville at spammers.com  Fri May 27 02:01:44 2005
From: ville at spammers.com (Ville Vainio)
Date: 27 May 2005 09:01:44 +0300
Subject: Python analog of Ruby on Rails?
References: <mailman.100.1117039885.18027.python-list@python.org>
	<4294adc3$0$2526$626a14ce@news.free.fr>
	<mailman.107.1117051304.18027.python-list@python.org>
	<1117073580.063476.125140@g14g2000cwa.googlegroups.com>
	<mailman.139.1117122997.18027.python-list@python.org>
Message-ID: <du7zmuhb41j.fsf@amadeus.cc.tut.fi>

>>>>> "Shane" == Shane Hathaway <shane at hathawaymix.org> writes:

    Shane> BTW, here's the proper response to that religious thread
    Shane> that keeps invading this list:

    Shane> python -c 'print sum([ord(c) for c in "HOLYBIBLE"])'

    Shane> I'm Christian and I think it's funny. ;-)  Some background:

    Shane> http://scriptures.lds.org/rev/13/16-18#16
    Shane> http://www.greaterthings.com/Word-Number/666HolyBible.htm

Ah, it was *obvious* from the start that the placement of ASCII
letters was a conspiracy of american freemasons...

-- 
Ville Vainio   http://tinyurl.com/2prnb


From roy at panix.com  Wed May 11 06:42:39 2005
From: roy at panix.com (Roy Smith)
Date: Wed, 11 May 2005 06:42:39 -0400
Subject: Python Args By Reference
References: <1115769308.136143.74080@f14g2000cwb.googlegroups.com>
	<1182j1daaepv6f4@corp.supernews.com>
	<1115787330.723188.295610@f14g2000cwb.googlegroups.com>
Message-ID: <roy-385EA3.06423911052005@reader1.panix.com>

"ncf" <nothingcanfulfill at gmail.com> wrote:
> The two issues I am having in grasping all of this are as follows:
> 1) Being new to Python, terms like mutable and immutable. Although I
> have probably dealt with them in other languages, the terms by
> themselves are a little confusing, but managable overall, so this issue
> isn't so big.

If you know C++, imagine a class where every method is declared const.  
That's essentially what Python's immutable means.  Once you've created an 
object, you can never modify it (other than to destroy it).

The most common immutable objects you'll see are strings and tuples, and 
the main reason they're immutable is to allow them to be dict keys.

> 2) LARGELY, my issue is as demonstrated by the following code. I was
> trying to accomplish an effect similar to what is possible in C.
> (Trying to make a pure-python FIPS-180-2 compliant implementation of
> the SHA-256 algorithm for more Python practice and to put into some
> code for a *trial* secure protocol.)
> Example C Code:
> #define P(a,b,c,d,e,f,g,h,x,K) \
> { \
> temp1 = h + S3(e) + F1(e,f,g) + K + x; \
> temp2 = S2(a) + F0(a,b,c); \
> d += temp1; h = temp1 + temp2; \
> }
> 
> Python Code:
> def P(a,b,c,d,e,f,g,h,x,K):
>     temp1 = h + S3(e) + F1(e,f,g) + K + x
>     temp2 = S2(a) + F0(a,b,c)
>     d += temp1; h = temp1 + temp2

Perhaps something like this:

def P(a,b,c,d,e,f,g,h,x,K):
    temp1 = h + S3(e) + F1(e,f,g) + K + x
    temp2 = S2(a) + F0(a,b,c)
    return (d+temp1, temp1+temp2)

then you could call it as:

D, H = P( A, B, C, D, E, F, G, H, W[ 0], 0x428A2F98 )
D, H = P( H, A, B, C, D, E, F, G, W[ 1], 0x71374491 )
D, H = P( G, H, A, B, C, D, E, F, W[ 2], 0xB5C0FBCF )
D, H = P( F, G, H, A, B, C, D, E, W[ 3], 0xE9B5DBA5 )
D, H = P( E, F, G, H, A, B, C, D, W[ 4], 0x3956C25B )
D, H = P( D, E, F, G, H, A, B, C, W[ 5], 0x59F111F1 )
D, H = P( C, D, E, F, G, H, A, B, W[ 6], 0x923F82A4 )
D, H = P( B, C, D, E, F, G, H, A, W[ 7], 0xAB1C5ED5 )
D, H = P( A, B, C, D, E, F, G, H, W[ 8], 0xD807AA98 )


From Sebastien.Boisgerault at gmail.com  Fri May 13 13:21:17 2005
From: Sebastien.Boisgerault at gmail.com (=?iso-8859-1?q?S=E9bastien_Boisg=E9rault?=)
Date: 13 May 2005 10:21:17 -0700
Subject: Dynamic doctests?
In-Reply-To: <1116001950.734967.303100@g47g2000cwa.googlegroups.com>
References: <1116001950.734967.303100@g47g2000cwa.googlegroups.com>
Message-ID: <1116004877.239813.211540@g43g2000cwa.googlegroups.com>


>
>   code='"""\n>>> n\n6\n"""\nn=6\nimport doctest\ndoctest.testmod()'
>   exec(code)
>

Remove 'doctest.tesmod()' and the import from your 'code' string.

]]] exec(code)
]]] import doctest
]]] doctest.testmod()

should do the trick.

Cheers,

SB



From sjmachin at lexicon.net  Thu May 19 19:52:00 2005
From: sjmachin at lexicon.net (John Machin)
Date: Fri, 20 May 2005 09:52:00 +1000
Subject: problem uploading ZIP file tp PyPI
References: <spsb81hia4m5n136tp0sgpuldd0gon555m@4ax.com>
	<4287fd5e$0$4655$afc38c87@news.optusnet.com.au>
	<1116210182.148076.159110@g44g2000cwa.googlegroups.com>
	<42888e05$0$5180$afc38c87@news.optusnet.com.au>
	<c18h81pj5bsi149rknvjemq2v8vo8794ei@4ax.com>
	<428d12d0$0$8122$afc38c87@news.optusnet.com.au>
Message-ID: <ic9q81pjunv49llnlnshi1po5cmhut5fdf@4ax.com>

On Fri, 20 May 2005 08:27:28 +1000, richard
<richardjones at optushome.com.au> wrote:

>John Machin wrote:
>> On Mon, 16 May 2005 22:11:49 +1000, richard
>>>John Machin wrote:
>>>> setup.py sdist --format=zip
>>>
>>>Try without the --format arg. The code is being too paranoid.
>> 
>> Result: (A) produces a zip file with only minor differences
>> (presumably a timestamp):
>
>Oh, so even without --format, a ZIP source dist file is produced anyway?

On a win32 platform, yes, as documented.

> If
>this is the case, please file a bug against PyPI.

I presume you mean a bug *report*. Done.

>
>
>>> The code is being too paranoid
>> 
>> Which code (distutils or PyPI server) is being paranoid about what???
>
>The PyPI server code, which attempts to make sure people aren't uploading
>pr0n.

So zip implies pr0n but exe doesn't ???





From leszczynscyATnospam.yahoo.com.nospam  Thu May 19 08:19:59 2005
From: leszczynscyATnospam.yahoo.com.nospam (Andy Leszczynski)
Date: Thu, 19 May 2005 07:19:59 -0500
Subject: ldaptor based LDAP server
Message-ID: <Mbedne7yT58XHhHfRVn-hg@comcast.com>

Hi,
I am looking for a Python barebones for a simple LDAP
server project. It does not have to be Twisted based,
but it would be wonderful if it is. I need a very
simple server which is listening on some port and
accepts following LDAP messages:
	-bind
	-search
	-unbind

There are not going to be a actual LDAP database
backend. All what happens is parsing above and reply
with some simple content based on the some parameters
from the request.

I am just wondering with using ldaptor's protocol
components I could easily come up with such a server?
What do you think, would it be feasible with that?

Thanks in advance,

AndyL


From Sebastien.Boisgerault at gmail.com  Fri May 27 14:58:06 2005
From: Sebastien.Boisgerault at gmail.com (=?iso-8859-1?q?S=E9bastien_Boisg=E9rault?=)
Date: 27 May 2005 11:58:06 -0700
Subject: lambda a plusieurs arguments
References: <42975b1a$0$26423$626a14ce@news.free.fr>
Message-ID: <1117220286.210721.209080@g44g2000cwa.googlegroups.com>

Nico,

python at aful.org seems to be a good place to post
questions related to Python if you intend to use
french.

-> http://www.aful.org/wws/arc/python/

((
    des questions r?dig?es en fran?ais sont plus
    ? leur place sur des liste de diffusions
    nationales ...
))

Regards,

SB



From bdesth.quelquechose at free.quelquepart.fr  Mon May 30 16:19:20 2005
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Mon, 30 May 2005 22:19:20 +0200
Subject: Python Exercises for Newbee
In-Reply-To: <1117471557.619636.232000@g44g2000cwa.googlegroups.com>
References: <1117471557.619636.232000@g44g2000cwa.googlegroups.com>
Message-ID: <429b6ff6$0$26447$626a14ce@news.free.fr>

Kanthi Kiran Narisetti a ?crit :
> Hi ALL,
> 
> I am Windows Administrator, moving little ahead from batch files and
> scripts I started learning Python. I found that Python is very easy and
> is very well documented. Still I am looking more than examples. As a
> beginner i want to do lot of excersice from simple addition to complex
> ...which help me to understand the concepets more clearly.
> 
> I appreciate if any one can give me such exersices or any link for the
> same.
> 

You may want to try Dive into Python
http://diveintopython.org/



From hongqn at gmail.com  Sun May  1 02:17:18 2005
From: hongqn at gmail.com (Qiangning Hong)
Date: 30 Apr 2005 23:17:18 -0700
Subject: compare two voices
References: <1114916457.795332.45220@f14g2000cwb.googlegroups.com>
	<pan.2005.05.01.01.13.33.665804@jerf.org>
Message-ID: <1114928238.521134.101500@l41g2000cwc.googlegroups.com>

Jeremy Bowers wrote:
> No matter how you slice it, this is not a Python problem, this is an
> intense voice recognition algorithm problem that would make a good
> PhD thesis.

No, my goal is nothing relative to voice recognition.  Sorry that I
haven't described my question clearly.  We are not teaching English, so
the voice recognition isn't helpful here.

I just want to compare two sound WAVE file, not what the students or
the teacher really saying.  For example, if the teacher recorded his
"standard" pronouncation of "god", then the student saying "good" will
get a higher score than the student saying "evil" ---- because "good"
sounds more like "god".

Yes, this not a Python problem, but I am a fan of Python and using
Python to develop the other parts of the application (UI, sound play
and record, grammer training, etc), so I ask here for available python
module, and of cause, for any kindly suggestions unrelative to Python
itself (like yours) too.

I myself have tried using Python's standard audioop module, using the
findfactor and rms functions.  I try to use the value returned from
rms(add(a, mul(b, -findfactor(a, b)))) as the score.  But the result is
not good.  So I want to know if there is a human-voice optimized
algorithm/library out there.



From m at m.com  Thu May  5 03:20:58 2005
From: m at m.com (monkey)
Date: Thu, 5 May 2005 15:20:58 +0800
Subject: OOPS concept
References: <42787b58$1_2@rain.i-cable.com>
	<mailman.35.1115273221.29826.python-list@python.org>
Message-ID: <4279c95d$1_2@rain.i-cable.com>

Google, search.

"km" <km at mrna.tn.nic.in> ???
news:mailman.35.1115273221.29826.python-list at python.org ???...
> Hi all,
>
> Well this doesnt explain new style classes. let me be more clear. is there
any online tutorial/ recommended book which deals explicitly with object
oriented programming in python?
>
> regards,
> KM
> --------------------------------------------------------------------------
-
> > Try this online book, it may help, the url is:
http://www.byteofpython.info
> >
> > > Hi all,
> > >
> > > Is there any good step by step online tutorial on OOPS concepts in
python
> > ?
> > > i have checked some on the python.org.__doc__ page but couldnt make
much
> > sense.  especially i need help on newstyle classes.
> > >
> > > regards,
> > > KM
> >
> >
> > -- 
> > http://mail.python.org/mailman/listinfo/python-list
> >
>




From fredrik at pythonware.com  Thu May 26 13:48:12 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 26 May 2005 19:48:12 +0200
Subject: [PATCH] add offset argument to mmap
References: <20050526142918.GA1627@64m.dyndns.org>
Message-ID: <d75214$vnh$1@sea.gmane.org>

Christopher Li wrote:

> I am surprised to find out the mmap module in python always
> mmap from offset 0. So I just hack up some patch to allow it
> accept offset arguments.

patches posted to the newsgroup are likely to be ignored or
forgotten.

patches posted to the patch tracker

    http://sourceforge.net/tracker/?group_id=5470&atid=305470

are a lot more likely to be reviewed and included.

</F>





From dave at pythonapocrypha.com  Wed May 18 17:32:23 2005
From: dave at pythonapocrypha.com (Dave Brueck)
Date: Wed, 18 May 2005 15:32:23 -0600
Subject: Is Python suitable for a huge, enterprise size app?
In-Reply-To: <1116450537.626601.251990@g49g2000cwa.googlegroups.com>
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>	<jmbsl2-opn.ln1@lairds.us>	<1116442276.918194.194110@g44g2000cwa.googlegroups.com>	<mailman.163.1116443300.8733.python-list@python.org>
	<1116450537.626601.251990@g49g2000cwa.googlegroups.com>
Message-ID: <428BB467.6080804@pythonapocrypha.com>

George Sakkis wrote:
> Personally, although I find nothing comes close to the clarity and
> flexibility that python offers, in this case I would go with java, if
> for nothing else, to be on the safe side. Think about it: if the
> project fails (and that's quite likely for huge projects, not dark
> humour) and you've done it in python, everyone will blame python and
> you who chose it; java OTOH belongs in the realm of "standard business
> practices", so in a way "it's ok" to screw up, you did what everybody
> else does. Yet another failed java enterprise project, nothing to see
> here.

lol - I got a kick out of this post and I agree with it: *if* you're pretty sure 
the project will ultimately fail, and you're planning for the best way to point 
fingers and avoid the ax when it happens, then by all means, Java is the right 
way to go. Java is the new "nobody ever got fired for buying IBM".

-Dave


From artiegold at austin.rr.com  Sun May 22 23:28:03 2005
From: artiegold at austin.rr.com (Artie Gold)
Date: Sun, 22 May 2005 22:28:03 -0500
Subject: libpython2.3.a Linux
In-Reply-To: <mailman.2.1116793377.18027.python-list@python.org>
References: <mailman.2.1116793377.18027.python-list@python.org>
Message-ID: <3fd0ucF7576uU1@individual.net>

David wrote:
> Hello,
> 
> I'm trying to build a python module in the form of an .so file but I keep 
> getting the following message :
> 
> /usr/bin/ld cannot find -llibpython2.3
> 
> I have all the necessary files in /usr/local/src/Python-2.3.5
> 
> with libpython2.3.a and libpython2.3.so files
> 
> g++ -I /usr/local/src/Python-2.3.5/Include -L /usr/local/src/Python-2.3.5 -
> shared -fPIC -l libpython2.3 -o file.so

Close:

g++ -I/usr/local/src/Python-2.3.5/Include -L/usr/local/src/Python-2.3.5 
   -shared -fPIC -lpython2.3 -o file.so

Please read the man page (or equivalent documentation) for the correct 
way to use options in g++.
> 
> Running on Fedora Core 3 - 1.7.0
> 
> made the following steps in compiling and installing Python :
> 
> ./configure
> make
> make install
> make libpython2.3.so
> 
> Compiling on windows 2k is fine.
> 
> Thanks for any input.
> 
> David
> 
> 
> 
HTH,
--ag

-- 
Artie Gold -- Austin, Texas
http://it-matters.blogspot.com (new post 12/5)
http://www.cafepress.com/goldsays


From donn at drizzle.com  Tue May 17 01:32:26 2005
From: donn at drizzle.com (Donn Cave)
Date: Tue, 17 May 2005 05:32:26 -0000
Subject: Python Polymorphism
References: <mailman.495.1115928047.29826.python-list@python.org>
	<nROge.89215$Kb6.5425239@phobos.telenet-ops.be>
	<1116255034.330555.253650@g43g2000cwa.googlegroups.com>
Message-ID: <1116307944.693208@yasure>

Quoth "=?iso-8859-1?q?Steffen_Gl=FCckselig?=" <usenet at gungfu.de>:
|
|> Ah, that's not polymorphism; it's method overloading. And AFAIK it is
|
|> not possible in Python.
| It IS polymorphism. Not the one one is usually referring to, but it is.
| Overloading is an 'ad hoc'-polymorphism.

Or 'bogus'-polymorphism.

	Donn Cave, donn at drizzle.com


From grante at visi.com  Wed May 11 10:22:18 2005
From: grante at visi.com (Grant Edwards)
Date: Wed, 11 May 2005 14:22:18 -0000
Subject: Python Args By Reference
References: <1115769308.136143.74080@f14g2000cwb.googlegroups.com>
	<1182j1daaepv6f4@corp.supernews.com>
	<1115787330.723188.295610@f14g2000cwb.googlegroups.com>
	<roy-385EA3.06423911052005@reader1.panix.com>
	<IPqdnexVeJOhkR_fRVn-1w@powergate.ca>
Message-ID: <118458qtig7pq1f@corp.supernews.com>

On 2005-05-11, Peter Hansen <peter at engcorp.com> wrote:

>> The most common immutable objects you'll see are strings and
>> tuples, and the main reason they're immutable is to allow them
>> to be dict keys.
>
> And ints.  Strings, tuples and ints are the *three* most
> common immutable objects you'll see...

Right.  In Python, strings tuples and ints are the five most
common immutable objects you'll see.

-- 
Grant Edwards                   grante             Yow!  You were s'posed
                                  at               to laugh!
                               visi.com            


From jepler at unpythonic.net  Fri May  6 15:46:36 2005
From: jepler at unpythonic.net (Jeff Epler)
Date: Fri, 6 May 2005 14:46:36 -0500
Subject: [HELP] Tkinter Application Minimized to System Tray :)
In-Reply-To: <BAY1-F39DA2AB158BE8CCDFDEF85FA1B0@phx.gbl>
References: <BAY1-F39DA2AB158BE8CCDFDEF85FA1B0@phx.gbl>
Message-ID: <20050506194635.GC27403@unpythonic.net>

Tk, the library that Tkinter wraps, does not offer a way to "minimize to
the taskbar".

Jeff
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From jrastrick at student.usyd.edu.au  Mon May 16 11:28:09 2005
From: jrastrick at student.usyd.edu.au (Jordan Rastrick)
Date: 16 May 2005 08:28:09 -0700
Subject: Is isinstance always "considered harmful"?
In-Reply-To: <4287fb54.30249907@news.oz.net>
References: <1116157672.683839.49700@o13g2000cwo.googlegroups.com>
	<mailman.0.1116194942.8733.python-list@python.org>
	<4287fb54.30249907@news.oz.net>
Message-ID: <1116257289.318075.222300@g43g2000cwa.googlegroups.com>

Thanks for the replies, everyone. As is usual when reading
comp.lang.python, I got some invaluable exposure to new ideas (multiple
dispatching in particular seems to fill a gap I've felt in OO
programming in the past.)

I'm starting to think this newsgroup is in its own right an excellent
reason to get into Python - the fact its an awesome language is just an
added bouns ;-)



From enleverlesO.OmcO at OmclaveauO.com  Sun May  1 14:27:05 2005
From: enleverlesO.OmcO at OmclaveauO.com (Do Re Mi chel La Si Do)
Date: Sun, 1 May 2005 20:27:05 +0200
Subject: Python interpreter in Basic or a Python-2-Basic translator.
References: <1114953507.031865.244920@g14g2000cwa.googlegroups.com>
Message-ID: <42751f98$0$844$8fcfb975@news.wanadoo.fr>

Hi !


VBA is at the end of his lifetime. The next MS-Office will not have VBA 
(because dotNet).
You should really adopt Python.


@-salutations
-- 
Michel Claveau





From tzot at sil-tec.gr  Wed May 11 10:45:06 2005
From: tzot at sil-tec.gr (Christos TZOTZIOY Georgiou)
Date: Wed, 11 May 2005 17:45:06 +0300
Subject: Supercomputer and encryption and compression @ rate of 96%
References: <d3ll5p$mj3$1@sea.gmane.org>
	<mailman.19.1115038979.6583.python-list@python.org>
Message-ID: <7j648193hr9o2cgcl090rq5gs9eeql41ku@4ax.com>

On Mon, 2 May 2005 23:11:54 +0530, rumours say that km
<km at mrna.tn.nic.in> might have written:

>Hi all,
>
>This was posted long ago.
>I tried to compress a  mp3 file but i couldnt get the keycode+".out" file which is of size 1 bit. instead it is printed to STDOUT. i am usng python 2.4 . i understand that the keycode is embedded in the filename itself. Is it a problem with python not able to create a file with such a big filename ? 
>any workarounds ? 

Ah...

Perhaps your humour is too subtle for me, in which case my reply is
totally off.  In any case:

Python does not restrict filename lengths; it happily creates filenames
of length less than or equal to the limit imposed by the underlying
operating system.

Now, in our universe there cannot be a compression algorithm that
reduces entropy and file size at the same time.  The code was a joke (I
even suggested a correction, which was a mistake because I hadn't
understood the full joke[1] :)

[snip effbot's code]


[1] I thought that Fredrik just made up something that looked like
working, and he explained that his code *was* working.
-- 
TZOTZIOY, I speak England very best.
"Be strict when sending and tolerant when receiving." (from RFC1958)
I really should keep that in mind when talking with people, actually...


From removethis.kartic.krishnamurthy at gmail.com  Mon May  9 08:09:20 2005
From: removethis.kartic.krishnamurthy at gmail.com (Kartic)
Date: Mon, 09 May 2005 12:09:20 GMT
Subject: is there a python object which can interpret java-script?
In-Reply-To: <427f4ae5$0$11234$750803fa@corp.news.telefonica.de>
References: <427f4ae5$0$11234$750803fa@corp.news.telefonica.de>
Message-ID: <QpIfe.170$FE6.126@newssvr31.news.prodigy.com>

The Great 'Alexander Fillips' uttered these words on 5/9/2005 7:34 AM:
> Hi,
> 
> my short question:
> 
> is there a python object which can interpret java-script?
> 
> the whole story ;-)
> 
> I wrote some streaming-scripts for the xbox mediaplayer which supports 
> python. for a new script i tried to filter the stream-url from an 
> website. it seems, that the site ist using java-script and the url is 
> only visible if the java-script was interpreted. i am using urllib to 
> retrieve the page.. but it seems that urllib is not ready for 
> java-script...

http://wwwsearch.sourceforge.net/python-spidermonkey/ is a 
Python-Javascript bridge.

To do what you are trying, you will have to execute the Javascript in 
that web page in the context of the page you are downloading...I am not 
quite sure how you will go about doing that without re-inventing what a 
Javascript-enabled browser does.

Knowing nothing about the Xbox environment, here is a suggestion that I 
feel will make your task easier. Can you not use javascript-enabled 
links text browser to access the page and capture the output HTML source 
from links into Python? (Or if you can use win32all, you can automate IE 
to view source and process that source in Python to get your URL)

Thanks,
-Kartic


From rkern at ucsd.edu  Fri May 13 13:48:22 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Fri, 13 May 2005 10:48:22 -0700
Subject: OSx 10.4 lacks pythonIDE?
In-Reply-To: <BEAAA2F4.473%baza41@gmail.com>
References: <2005051303214075249%baza@NOSPAMthemauvezoneorguk>	<mailman.508.1115951783.29826.python-list@python.org>
	<BEAAA2F4.473%baza41@gmail.com>
Message-ID: <d62oqb$8jl$1@sea.gmane.org>

B wrote:
> 
> On 13/5/05 03:35, in article
> mailman.508.1115951783.29826.python-list at python.org, "Robert Kern"
> <rkern at ucsd.edu> wrote:
> 
>>baza wrote:
>>
>>>Where is the IDE in 'Tiger' for the mac? Don't tell me I have to use
>>>text edit all the time??
>>
>>PythonIDE never came with the OS. You have to install it yourself.
>>
>>http://homepages.cwi.nl/~jack/macpython/
> 
> OK, just  installed it but it crashes under Tiger.

Not surprising. PythonIDE is very old and unmaintained relying on an 
older and even more unmaintained GUI toolkit. You should probably find 
another editor.

You could learn to use vim or emacs, both of which come with Tiger. They 
also have somewhat more Aqua-friendly GUI versions lurking around. I'm 
partial to vim, myself.

PyOXIDE might be a good choice for you.
http://homepage.mac.com/gandreas/Menu4.html

I'm told Xcode does a tolerable job with Python.

There are other IDEs floating around. Searching the PythonMac-SIG 
mailing list archives should show you past discussions about them and 
how well they work on OS X.

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From tonino.greco at gmail.com  Tue May 17 08:26:15 2005
From: tonino.greco at gmail.com (Tonino)
Date: 17 May 2005 05:26:15 -0700
Subject: best way to do this ...
Message-ID: <1116332775.964419.168370@o13g2000cwo.googlegroups.com>

Hi ALL,

I am having a issue with a particular storage of data problem and
wanted to know if I am going about it the wrong way.

I have a list of reference numbers associated with a product and I have
a socket that listens on a port.  Now what happens is the client app
connects to the server - sends the product and the associated ref
numbers (there are a few per product). I need to be able to store these
in a data  structure so that when the same product is called again  -
it can display the ref numbers for that product.

I am new to OO programming - so please have mercy ;)

eg:


class ProductData:
    def __init__(self,prod):
        self.prod = prod
        self.ref = []
    def add_ref(self,refno):
        self.ref.append(refno)
    def __str__(self):
        return "%s : %s" % (self.prod,",".join(self.ref))


products = ['table', 'chair', 'couch']
ref_numbers = ['1234','4567', '7890']

detail = {}
id = 0

for p in products:
    detail[id] = ProductData(p)
    for r in ref_numbers:
        detail[id].add_ref(r)
    id = id + 1

for a in detail:
    print detail[a]


so I will get:

table : 1234,4567,7890
chair : 1234,4567,7890
couch : 1234,4567,7890

BUT I will need to be able to have this in a while loop - as there is a
socket listener there.

I keep getting this error:

    for a in Detail:
RuntimeError: dictionary changed size during iteration


any ideas ?

Thanks
Tonino

what I want to be able to get is a dict of the products and associated



From dwelch at vcd.hp.com  Mon May  9 12:17:25 2005
From: dwelch at vcd.hp.com (djw)
Date: Mon, 09 May 2005 09:17:25 -0700
Subject: Calling a python function from C++
In-Reply-To: <1115573496.595824.47970@f14g2000cwb.googlegroups.com>
References: <1115573496.595824.47970@f14g2000cwb.googlegroups.com>
Message-ID: <d5o2ls$3gi$1@news.vcd.hp.com>

lamthierry at gmail.com wrote:
> Let's say I have a python function do some math like the following:
> 
> def doMath(self):
>    self.val = self.val + 1
> 
> 
> How can I call this python function from C++? Assuming I have some sort
> of Python wrapper around my C++ codes.
> 

Elmer?

http://elmer.sourceforge.net/


From lknews at netactive.co.uk  Tue May 10 10:07:12 2005
From: lknews at netactive.co.uk (Lawrence Kirby)
Date: Tue, 10 May 2005 15:07:12 +0100
Subject: Language documentation ( was Re: Computing Industry shams)
References: <1115509201.680334.140840@f14g2000cwb.googlegroups.com>
	<874qdezh76.fsf@kafka.homenet> <1415322.AzhuxSBQdk@yahoo.com>
	<x78y2ot3zq.fsf@bolo.xenadyne.com> <1955897.My2EmLpO4s@yahoo.com>
Message-ID: <pan.2005.05.10.14.08.14.485000@netactive.co.uk>

On Tue, 10 May 2005 04:58:48 -0700, alex goldman wrote:

> Sean Burke wrote:

...

>> No, you're just confused about the optimization metric.
>> In regexes, "greedy" match optimizes for the longest match,
>> not the fastest.
>> 
>> And this is common regex terminology - man perlre and you will
>> find discussion of "greedy" vs. "stingy" matching.
> 
> Read what you quoted again. Everyone (Xah, vermicule, myself) was talking
> about "greedy" as it's used in graph search and optimization algorithms.

However the original quote was in the context of regular expressions, so
discussion of the terminology used in regular expressions is far more
relevant than the terminology used in graph search and optimisation
algorithms.

Lawrence


From "myname" at example.invalid  Sat May 28 19:09:41 2005
From: "myname" at example.invalid (VK)
Date: Sun, 29 May 2005 01:09:41 +0200
Subject: Copy paste in entry widget
In-Reply-To: <mailman.225.1117320375.18027.python-list@python.org>
References: <1117200716.423741.257870@f14g2000cwb.googlegroups.com>
	<mailman.225.1117320375.18027.python-list@python.org>
Message-ID: <3fsc2dF9264iU1@news.dfncis.de>

Skip Montanaro wrote:
>     Michael> is copy, paste, cut of selection possible in entry widget? Docs
>     Michael> say selection must be copied by default, in my programm it
>     Michael> doesn't work.
> 
> What platform?  What GUI toolkit?
> 

Linux, Windows. TkInter, Pmw.
I've already implemented this with code under my message, but "cut"
copies entrytext, without deleting selection. Any ideas

def copy(self):
             global copied
             if self.entry.selection_present():
                self.entry.clipboard_clear()
                copied = self.entry.selection_get()
             self.entry.bell()
         def paste(self):
             self.entry.insert(END, copied)
         def cut(self):
             global copied
             self.entry.clipboard_clear()
             if self.entry.selection_present():
                 copied = self.entry.selection_get()
                 self.entry.selection_clear()
             self.entry.bell


From fredrik at pythonware.com  Mon May  9 16:11:46 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Mon, 9 May 2005 22:11:46 +0200
Subject: Declaring self in PyObject_CallMethod
References: <1115598000.927106.167320@o13g2000cwo.googlegroups.com>
Message-ID: <d5ofoc$t36$1@sea.gmane.org>

"lamthierry at gmail.com" wrote:

> Calling a python method from C++ has the following signature:
>
> PyObject *
> PyObject_CallMethod(PyObject *self, char *method_name,
>                     char *arg_format, ...);
>
> I'm having trouble figuring out how to declare self.

Reading the C API documentation might provide the clues you're
looking for:

    PyObject* PyObject_CallMethod(PyObject *o, char *method, char *format, ...)

    Return value: New reference.

    Call the method named method of object o with a variable number of C arguments.
    /.../ This is the equivalent of the Python expression "o.method(args)".

What is the object?  What method are you calling?  What arguments
are you passing in?

> Let's say my python file is called stuff.py and is like the following,
> doMath() is defined in stuff.py and is not part of any class:
>
> #stuff.py
>
> def doMath():
>    val = val + 1

That's a function, not an object method.

> In C++, I think my codes should be like the following:
>
> PyObject *resultObj = PyObject_CallMethod( self, "doMath", "");
>
> What do I put for self? Any help please?

CallMethod is used to call a method on a given object.  To call a callable object
(such as a function), other callable object, use PyObject_Call (or CallObject
or CallFunction).   See the C API documentation for details.

</F>





From snobis at gmx.de  Mon May 16 16:53:08 2005
From: snobis at gmx.de (Stefan Nobis)
Date: Mon, 16 May 2005 22:53:08 +0200
Subject: Newbie : checking semantics
References: <1115503520.392357.230620@f14g2000cwb.googlegroups.com>
	<87d5rrsh7h.fsf@snobis.de>
	<pan.2005.05.16.13.58.07.671337@dalkescientific.com>
	<87fywnuny3.fsf@snobis.de>
	<pan.2005.05.16.19.32.03.664971@dalkescientific.com>
Message-ID: <877jhyvqob.fsf@snobis.de>

Andrew Dalke <dalke at dalkescientific.com> writes:

> See the program "pindent.py"

Thanks for the hint, i didn't know about it.

-- 
Stefan.


From news at rob.hooft.net  Sun May 29 00:42:42 2005
From: news at rob.hooft.net (Rob W. W. Hooft)
Date: Sun, 29 May 2005 06:42:42 +0200
Subject: Comparing 2 similar strings?
In-Reply-To: <4298e792$0$150$e4fe514c@news.xs4all.nl>
References: <24a6d$428b9c10$d1b717f8$2300@PRIMUS.CA><428c0d21$1@nntp0.pdx.net>
	<1116487353.934354.195940@g43g2000cwa.googlegroups.com>
	<3k4gm2-9pk.ln1@home.rogerbinns.com> <4298D9EF.80805@rob.hooft.net>
	<4298e792$0$150$e4fe514c@news.xs4all.nl>
Message-ID: <42994842.4090407@rob.hooft.net>

Irmen de Jong wrote:
> Wouldn't it be easier if it is normalized to a float between 0.0 and 1.0?

Maybe. You could do that by ignoring "negative" values, and by dividing 
by min(len(s1),len(s2))+1. For my application this is irrelevant, I only 
need a scale to compare a single word to many different words, and pick 
the one that stands out. I can relate the (unnormalized) score to the 
number of typos in the word.

> Furthermore, I can also produce wrong(?) results:
> 
> $ python comparestrings.py
> s1: test
> s2: x
> Score: -0.4
> 
> Minus 0.4... Is this a bug?

Not in the procedure, it is a bug in my description. It was late at 
night when I wrote it. What you are doing here is aligning the two words 
like this:

test
--x-

the t opens a gap (score -0.3), e elongates the gap (-0.2), s and x are 
adjacent on the keyboard (score 0.4) and t opens a gap (-0.3). Total 
score is -0.4. If you compare "test" with "l" you even get a score of 
-0.7. You can make arbitrarily low numbers by comparing long strings of 
"a" characters with a single "l".

What this is telling you is that not only are the letters all different 
(score 0.0), but the strings are not even equally long (hence <0.0). The 
gap-open and gap-elongation penalties can be adjusted in the module. The 
-0.3 and -0.2 values were set after some experimentation to make the 
relative scores of different matches "feel" natural.

-- 
Rob W.W. Hooft  ||  rob at hooft.net  ||  http://www.hooft.net/people/rob/


From rkern at ucsd.edu  Sat May 14 08:47:19 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Sat, 14 May 2005 05:47:19 -0700
Subject: Multiple "cmp"s chained one after another
In-Reply-To: <d64io9$s6o$05$1@news.t-online.com>
References: <d64io9$s6o$05$1@news.t-online.com>
Message-ID: <d64s0h$63p$1@sea.gmane.org>

Volker Grabsch wrote:
> Hello!
> 
> Ich just found a very nice 'pythonic' solution for an often appearing
> problem. I didn't find it documented anywhere, so I'm posting it here.
> If this isn't new in any way, I'd really like to get to know it.
> 
> Example problem:
> I have some "datetime" objects and want to sort them, as here:
> 
> 	birthdays = [d1,d2,d3,d4]
> 	birthdays.sort()
> 
> However, I don't want to sort them the default way. These are birthdays,
> so only the month and day do matter, not the year. E.g.:
> 
> 	2003-01-01  should be smaller than  1984-05-01
[snip]
> Any opinions?

I find that using the "key" argument to sort is much nicer than "cmp" 
for these tasks.

In [5]:L = [datetime.date(2005,5,2), datetime.date(1984,12,15), 
datetime.date(1954,1,1)]

In [7]:L.sort(key=lambda x: (x.month, x.day))

In [8]:L
Out[8]:
[datetime.date(1954, 1, 1),
  datetime.date(2005, 5, 2),
  datetime.date(1984, 12, 15)]

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From tjreedy at udel.edu  Wed May 25 11:07:10 2005
From: tjreedy at udel.edu (Terry Reedy)
Date: Wed, 25 May 2005 11:07:10 -0400
Subject: Using properties
References: <1117029966.799908.183830@f14g2000cwb.googlegroups.com>
Message-ID: <d7247g$afa$1@sea.gmane.org>


<tkpmep at hotmail.com> wrote in message 
news:1117029966.799908.183830 at f14g2000cwb.googlegroups.com...
>I have a class with a name attribute, which I want to modify using
> property.The following code works just fine:
>
> class Portfolio(object):
>
>    def __init__( self, name="Port1"):
>        self.name=name
>
>    def getname(self):
>        return self._name
>
>    def setname(self,newname="Port2"):
>        self._name=newname
>
>    name=property(getname,setname,None,None)
>
> However, it no longer works if I modify getname and setname to

What does 'no longer works' mean?  Do you get and exception and traceback? 
If so, what?

>    def getname(self):
>        return self.name

>    def setname(self,newname="Port2"):
>        self.name=newname

These both look like infinite loops.  Did you got the related exceptions?
>
> Why is it so critical to have getname and setname modify _name and not
> name? The constructor does not make name a private attribute, so why do
> getname and setname have to treat it as such?

I believe because getting and setting name calls getname and setname.  The 
initializer (not constructor) setting of name results in a call to setname.

Terry J. Reedy





From sjmachin at lexicon.net  Sat May  7 21:30:36 2005
From: sjmachin at lexicon.net (John Machin)
Date: Sun, 08 May 2005 11:30:36 +1000
Subject: Trouble saving unicode text to file
References: <1115500976.571232.76100@z14g2000cwz.googlegroups.com>
	<mailman.152.1115504738.29826.python-list@python.org>
Message-ID: <5gmq71pg114vj5slqcqplkullri1bb5l2g@4ax.com>

On Sat, 7 May 2005 17:25:28 -0500, Skip Montanaro <skip at pobox.com>
wrote:

>
>    Svennglenn> Traceback (most recent call last):
>    Svennglenn>   File "D:\Documents and
>    Svennglenn> Settings\Daniel\Desktop\Programmering\aaotest\aaotest2\aaotest2.pyw",
>    Svennglenn> line 5, in ?
>    Svennglenn>     titel = unicode(titel)
>    Svennglenn> UnicodeDecodeError: 'ascii' codec can't decode byte 0xe5 in position 0:
>    Svennglenn> ordinal not in range(128)
>
>Try:
>
>    import codecs
>
>    titel = "???"
>    titel = unicode(titel, "iso-8859-1")
>    fil = codecs.open("testfil.txt", "w", "iso-8859-1")
>    fil.write(titel)
>    fil.close()
>

I tried that, with this result:

C:\junk>python skip.py
sys:1: DeprecationWarning: Non-ASCII character '\xe5' in file skip.py
on line 3, but no encoding declared; see http://www.python.org
/peps/pep-0263.html for details

1. An explicit PEP 263 declaration (which the OP already had!) should
be used, rather than relying on the default, which doesn't work in
general if you substituted say Polish or Russian for Swedish.

2. My bet is that 'cp1252' is more likely to be appropriate for the OP
than 'iso-8859-1'. The encodings are quite different in range(0x80,
0xA0). They coincidentally give the same result for the OP's limited
sample. However if for example the OP needs to use the euro character
which is 0x80 in cp1252, it wouldn't show up as a problem in the
limited scripts we've been playing with so far, but 0x80 in the script
is sure not going to look like a euro in Tkinter if it's being decoded
via iso-8859-1. Your rationale for using iso-8859-1 when the OP had
already mentioned cp1252 was ... what?





From steven.bethard at gmail.com  Wed May 11 16:21:50 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Wed, 11 May 2005 14:21:50 -0600
Subject: optparse
In-Reply-To: <1115841250.764632.296820@g47g2000cwa.googlegroups.com>
References: <1115841250.764632.296820@g47g2000cwa.googlegroups.com>
Message-ID: <sPKdnV13ANzA9B_fRVn-iQ@comcast.com>

S?bastien Boisg?rault wrote:
> Any idea why the 'options' object in
> 
> # optparse stuff
> (options, args) = parser.parse_args()
> 
> is not/couldn't be a real dict ? Or why at least it
> does not support dict's usual methods ?

Well, it's not a real dict because the original API intends it to be 
used as object attributes.  However, if you need a dict, it's pretty 
simple -- use vars() or .__dict__:

py> import optparse
py> p = optparse.OptionParser()
py> p.add_option('-x')
<Option at 0x11a01e8: -x>
py> options, args = p.parse_args(['-x', '0'])
py> options.x
'0'
py> vars(options)
{'x': '0'}
py> options.__dict__
{'x': '0'}

STeVe


From steven.bethard at gmail.com  Tue May 31 16:47:41 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Tue, 31 May 2005 14:47:41 -0600
Subject: convert a string to tuple
In-Reply-To: <1117570449.887422.225670@g43g2000cwa.googlegroups.com>
References: <1117570449.887422.225670@g43g2000cwa.googlegroups.com>
Message-ID: <VsWdnQBf4J_zUAHfRVn-2g@comcast.com>

querypk at gmail.com wrote:
> b is a string  b = '(1,2,3,4)' to b = (1,2,3,4)

py> tuple(int(s) for s in '(1,2,3,4)'[1:-1].split(','))
(1, 2, 3, 4)

Or if you're feeling daring:

py> eval('(1,2,3,4)', dict(__builtins__=None))
(1, 2, 3, 4)

Python makes no guarantees about the security of this second one though.

STeVe


From kent37 at tds.net  Tue May  3 07:47:33 2005
From: kent37 at tds.net (Kent Johnson)
Date: Tue, 03 May 2005 07:47:33 -0400
Subject: Inspect Python Classes for instance data information
In-Reply-To: <1115081401.464719.142070@o13g2000cwo.googlegroups.com>
References: <1115081401.464719.142070@o13g2000cwo.googlegroups.com>
Message-ID: <42776053$1_3@newspeer2.tds.net>

Tim Henderson wrote:
> Hello
> 
> I want to creat a program that can inspect a set of classes that i have
> made and spit out a savable version of these classes. To do this I need
> to be able to inspect each class and get all of its instance data as
> well as information about a particular meathod. 

If XML format is not a requirement then the pickle module may do what you want. For XML output you 
might be interested in
http://www.yared.com/pybypy/xml/index.html


From lamthierry at gmail.com  Sat May  7 10:16:58 2005
From: lamthierry at gmail.com (lamthierry at gmail.com)
Date: 7 May 2005 07:16:58 -0700
Subject: Listening to changes in a C++ variable from python
In-Reply-To: <pan.2005.05.07.04.45.41.410011@jerf.org>
References: <1115434594.806252.12740@o13g2000cwo.googlegroups.com>
	<pan.2005.05.07.04.45.41.410011@jerf.org>
Message-ID: <1115475418.801477.70220@o13g2000cwo.googlegroups.com>

Is there some python method which can do the polling you are talking
about? Or can you send me a link to some existing example?

> It is not possible to "listen" to something that is not "emitting"
change
> notifications. Your variable "val" isn't "talking".
>
> Some languages let you listen to every variable, but that is because
> behind the scenes it is emitting every variable change as an event.
>
> In C++, in keeping with its general philosophy, it is not going to be
> possible to listen to an "int". You must either poll it, or wrap that
int
> in something that *will* emit change messages in some fashion that
> satisfies you. Given the circumstance of updating a progress bar, I'd
poll
> it about every quarter to half second.
>
> The correct answer changes depending on what you are doing with the
info
> and the level of control you exert over the source C++.



From iamkris at gmail.com  Sun May  1 22:06:39 2005
From: iamkris at gmail.com (Kris)
Date: 1 May 2005 19:06:39 -0700
Subject: Static Methods in Python
Message-ID: <1114999599.608054.52730@f14g2000cwb.googlegroups.com>

Hi,
  I am a newbie to Python. With a background in Java, I was attempting
to write static methods in the class without the self as the first
parameter, when I got an error. I did a search for the same on Google
and found out that there was no consistent approach to this. I would
like to know what is the prescribed approach for the same. Any
thoughts, pointers about the same would be very much appreciated.

Thanks,
Kris



From could.net at gmail.com  Wed May  4 05:34:23 2005
From: could.net at gmail.com (could ildg)
Date: Wed, 4 May 2005 17:34:23 +0800
Subject: How to write this regular expression?
In-Reply-To: <1115195508.025605.53690@o13g2000cwo.googlegroups.com>
References: <mailman.139.1115189526.6583.python-list@python.org>
	<1115195508.025605.53690@o13g2000cwo.googlegroups.com>
Message-ID: <311b5ce105050402343dab03bf@mail.gmail.com>

Does it matter whether it is a homework?
Why do you look down upon homework?
Everyone can do his homework well without any problems in your logic?
It's a problem I met. I tried a lot and I can't work it out,
so I came here for help.
I saw someone complained that a question is too lengthy,
and I saw some questions were complained to be unclear,
but I never saw someone waste his time to judge if a question is a
homework. If this is natural, I'll pay attention from now on.

On 4 May 2005 01:31:48 -0700, George Sakkis <gsakkis at rutgers.edu> wrote:
> This newsgroup is in general very helpful, but there are some
> exceptions; one of them is when the problem appears blatantly to be a
> homework. Perhaps if you showed that you worked on it and made some
> progress, but it's not quite right, someone may help you.
> 
> George
> 
> --
> http://mail.python.org/mailman/listinfo/python-list
>


From jstroud at mbi.ucla.edu  Thu May 12 21:21:42 2005
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Thu, 12 May 2005 18:21:42 -0700
Subject: tkFileDialog question
In-Reply-To: <1115937784.883303.131080@f14g2000cwb.googlegroups.com>
References: <1115937784.883303.131080@f14g2000cwb.googlegroups.com>
Message-ID: <200505121821.42739.jstroud@mbi.ucla.edu>

Oops,

That should have been,


class MyApp:
        def __init__(self, parent):
                self.myParent = parent
                self.myContainer1 = Frame(parent)
                self.myContainer1.pack()

                self.entry = Entry(self.myContainer1)
                self.entry.grid(row=0,column=0, columnspan=2)
                self.button1 = Button(self.myContainer1,
                         command=(lambda: self.button1Click()))
                self.button1.configure(text="...")
                self.button1.grid(row=0, column=2)
                self.button1.bind("<Return>", self.button1Click)

        def button1Click(self, event=None):
                filePick = tkFileDialog.askopenfilename()


On Thursday 12 May 2005 03:43 pm, jaime.suarez at crossmatch.net wrote:
> I am creating a very simple GUI with one Entry widget and
> one Button.  The purpose of the Button widget is to Browse for
> a file using tkFileDialog.askopenfilename().
>
> I bind the button to a handler which spawns a tkFileDialog. This
> works but the button __stays depressed__ after the handler returns!
> Any ideas why?
>
> class MyApp:
> 	def __init__(self, parent):
> 		self.myParent = parent
> 		self.myContainer1 = Frame(parent)
> 		self.myContainer1.pack()
>
> 		self.entry = Entry(self.myContainer1)
> 		self.entry.grid(row=0,column=0 columnspan=2)
>
> 		self.button1 = Button(self.myContainer1)
> 		self.button1.configure(text="...")
> 		self.button1.grid(row=0, column=2)
> 		self.button1.bind("<Button-1>", self.button1Click)
> 		self.button1.bind("<Return>", self.button1Click)
>
>
> 	def button1Click(self, event):
> 		filePick = tkFileDialog.askopenfilename()

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From gh at ghaering.de  Tue May 10 05:10:12 2005
From: gh at ghaering.de (Gerhard Haering)
Date: Tue, 10 May 2005 11:10:12 +0200
Subject: sync dir's
In-Reply-To: <428060FA.8070207@open-networks.net>
References: <428043D7.8030203@open-networks.net> <d5plm4$fq$1@sea.gmane.org>
	<428060FA.8070207@open-networks.net>
Message-ID: <20050510091012.GA16575@mylene.ghaering.de>

On Tue, May 10, 2005 at 05:21:30PM +1000, Timothy Smith wrote:
> i need something which has a python library, so far i haven't seen 
> anything like that for rsync. i'll check out the others but

http://osx.freshmeat.net/projects/pysync/

    """
    Pysync has both a demonstration implementation of the rsync and
    related algorithms in pure Python, and a high speed librsync Python
    extension. The pure Python is not fast and is not optimized, however
    it does work and provides a simple implementation of the algorithm
    for reference and experimentation. It includes a combination of
    ideas taken from librsync, xdelta, and rsync. The librsync Python
    extension is less flexible and harder to understand, but is very
    fast.
    """
-- 
Gerhard H?ring - gh at ghaering.de - Python, web & database development

pysqlite - Powerful and fast embedded database engine "SQLite" for Python.
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From steve at holdenweb.com  Tue May 10 06:52:56 2005
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 10 May 2005 06:52:56 -0400
Subject: sync dir's
In-Reply-To: <428043D7.8030203@open-networks.net>
References: <428043D7.8030203@open-networks.net>
Message-ID: <d5q3c9$aga$1@sea.gmane.org>

Timothy Smith wrote:
> what would be the best tool to use to sync my local dir with a remote 
> one, say off a http resorce (although i'm open to other options there) i 
> haven't gotten any feed back on my problems with loading pysvn on win98, 
> and i can apprechiate if the dev's are too busy/can't be bothered with 
> win98. but i still need to find a solution that can achieve the same 
> result, and i'm starting to look for other options.
> 
You could always take a look at the ftpmirror code in the Tools 
subdirectory of your source distro. I've used that several times with 
great satisfaction, and it's fairly low-end - all you need is an FTP 
server at the other end.

regards
  Steve
-- 
Steve Holden        +1 703 861 4237  +1 800 494 3119
Holden Web LLC             http://www.holdenweb.com/
Python Web Programming  http://pydish.holdenweb.com/



From steve at holdenweb.com  Fri May 27 13:38:32 2005
From: steve at holdenweb.com (Steve Holden)
Date: Fri, 27 May 2005 13:38:32 -0400
Subject: Strings for a newbie
In-Reply-To: <d77707$jo$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
References: <d7726f$fdg$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>	<d7730r$qrb$1@n6.co.ru>
	<d77707$jo$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
Message-ID: <d77lq9$gc5$1@sea.gmane.org>

Malcolm Wooden wrote:
> Yes Sergei, as 3 of the lines are Dim statements, the real code is just 4 
> lines, a totally logical. It's not the amout of code thats a probelm, it's 
> following the logic and structure thats important. As I said Python.. UGH!
> 
> Malcolm
> 
Yes, the weirdest thing about the whole language is the way it jumps off 
the Internet and forces you to use it ... :-) (Which is my way of saying 
  that if you are happy with RealBasic then there's no need to pick 
Python up in the first place).

I can quite see why you would prefer

s = "This is a sentence of words"
For i = 1 to CountFields(s," ")
   a.append NthField(s," ",i)
next

to

s = "This is a sentence of words"
a = s.split()

How dare Python be shorter than RealBasic and easier to understand? 
(although you should check the validity of the Python code against a 
RealBasic interpreter. You might be surprised.) You also said

> my actual code is:
> 
>   for x in range(len(l)):
>     h = string.split(l[x])
> 
> where the sentence string is in an array of one element 'l'
> Error is:
> 
> Traceback (most recent call last):
>   File "<string>", line 34, in ?
>   File "<string>", line 27, in SentenceText
>   File "C:\PYTHON22\lib\string.py", line 122, in split
>     return s.split(sep, maxsplit)
> AttributeError: 'list' object has no attribute 'split'
> 
> 

and then wondered why you got error messages trying to apply "split()" 
to some list. This is equivalent to saying "somebody told me to hammer 
this nail in, but my screwdriver won't hammer things".

Those who don't *want* to understand will find ways not to. Those who 
*do* want to understand will engage on a dialog until their problems are 
solved.

The fact that you don't even use the split() method that RealBasic makes 
available means you are overlooking the fact that the two languages are 
actually identical (modulo a few declarations) for your problem!

python-ugh-indeed-ly y'rs  - steve
-- 
Steve Holden        +1 703 861 4237  +1 800 494 3119
Holden Web LLC             http://www.holdenweb.com/
Python Web Programming  http://pydish.holdenweb.com/



From jurgenex at hotmail.com  Wed May 25 10:00:09 2005
From: jurgenex at hotmail.com (Jürgen Exner)
Date: Wed, 25 May 2005 14:00:09 GMT
Subject: What are OOP's Jargons and Complexities?
References: <1116843761.619249.144790@g47g2000cwa.googlegroups.com>
	<1117003340.900449.124180@o13g2000cwo.googlegroups.com>
Message-ID: <Jx%ke.2014$Ri3.1267@trnddc09>

Xah Lee wrote:
> The Rise of "Static" versus "Instance" variables

**** Please do not feed the troll *****

> ----------
> to be continued tomorrow.

Please don't

> This is part of an installment of the article
> "What are OOP's Jargons and Complexities"
> by Xah Lee, 20050128. The full text is at
>  http://[...]/Periodic_dosage_dir[...]

Didn't your doctor tell you that you have to take your dosage regularly?

> ? Copyright 2005 by Xah Lee. Verbatim duplication of the complete
> article for non-profit purposes is granted.

Well, whatever he is missing, he has plenty of selfconfidence.

> The article is published in the following newsgroups:
> comp.lang.c,comp.lang.c++,comp.lang.lisp,comp.unix.programmer
> comp.lang.python,comp.lang.perl.misc,comp.lang.scheme,comp.lang.java.programmer
> comp.lang.functional,comp.object,comp.software-eng,comp.software.patterns

And guess what: that is called spamming.

jue 




From rkern at ucsd.edu  Tue May 17 23:17:03 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Tue, 17 May 2005 20:17:03 -0700
Subject: setting up scipy in windows
In-Reply-To: <1116384514.608584.9180@g49g2000cwa.googlegroups.com>
References: <1116384514.608584.9180@g49g2000cwa.googlegroups.com>
Message-ID: <d6ec25$15i$1@sea.gmane.org>

hawkesed wrote:
> Hi All,
>   has anyone out there recently set up scipy on Windows? Cause I am
> trying to do so know and I am not having much luck. I have ActiveState
> and Plone. When I try to import scipy in ActiveState it says
> 
>>>>import scipy
> 
> Traceback (most recent call last):
>   File "<interactive input>", line 1, in ?
> ImportError: No module named scipy
> 
>>>>from scipy import *
> 
> Traceback (most recent call last):
>   File "<interactive input>", line 1, in ?
> ImportError: No module named scipy
> When I try to the same in Plone it crashes. I have the latest self
> install executable from SCIPY. I didn't compile the source.
> Scipy looks like just the thing I want, if anyone has got it running on
> a Windows box I would like to hear how you did it. Thanks all have a
> great day.

The installer was made for the official python.org distribution. The 
paths for the ActiveState and Plone distributions are probably 
different. Move the files to the appropriate places.

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From mefjr75 at hotmail.com  Sun May  1 18:27:32 2005
From: mefjr75 at hotmail.com (M.E.Farmer)
Date: 1 May 2005 15:27:32 -0700
Subject: Multiple threads in a GUI app (wxPython),
	communication between worker thread and app?
In-Reply-To: <1114966991.337599.194500@f14g2000cwb.googlegroups.com>
References: <1114966991.337599.194500@f14g2000cwb.googlegroups.com>
Message-ID: <1114986451.990217.148570@f14g2000cwb.googlegroups.com>

Look inthe demo that comes with wxPython it is in tree process and
events -> threads .
There is a nice demo of PostEvent().
Another way would be to use Queues as others have mention .
You can create a new frame and have it  call the queue for data.

M.E.Farmer



From mwm at mired.org  Thu May 12 03:48:01 2005
From: mwm at mired.org (Mike Meyer)
Date: Thu, 12 May 2005 02:48:01 -0500
Subject: HELP Printing with wxPython
References: <d5t4oj$sct$1@carabinieri.cs.interbusiness.it>
	<mailman.357.1115820240.29826.python-list@python.org>
	<86ll6lkpo3.fsf@guru.mired.org>
	<mailman.436.1115881914.29826.python-list@python.org>
Message-ID: <86psvwkhqm.fsf@guru.mired.org>

jeff elkins <jeffelkins at earthlink.net> writes:

>> Instead, as was suggested earlier, use the "lpr" command and send it
>> the text/data on standard input. Any reasonably managed Unix system
>> should be able to handle a fair range of graphics formats, though
>> postscript is preferred.
> I've been using:
>
> p=os.popen('lp','w')        
> p.write("some text')
> p.Close()

Yeah. System V called it lp. BSD called it lpr. Most modern systems
have both, as they are just a front end to the line printer (when was
the last time you saw an honest-to-gods line printer?) daemon.

    <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From dstcruz at gmail.com  Tue May 10 16:03:48 2005
From: dstcruz at gmail.com (Daniel  Santa Cruz)
Date: 10 May 2005 13:03:48 -0700
Subject: Put a file on an ftp server over ssl
In-Reply-To: <mailman.312.1115754553.29826.python-list@python.org>
References: <1115749959.870607.20720@o13g2000cwo.googlegroups.com>
	<mailman.312.1115754553.29826.python-list@python.org>
Message-ID: <1115755428.196173.213360@f14g2000cwb.googlegroups.com>

Sorry Jp,

I was using the google client, and it does not automagically put reply
marks on the message one is replying too.  I'm just a bit frustrated
that such a seemingly simple task to get so complicated very easily.  I
do appreciate your input!  Just wish someone had already done it and
shared the little jewel with us.

Daniel



From Bernd.Nawothnig at t-online.de  Sat May 14 14:38:26 2005
From: Bernd.Nawothnig at t-online.de (Bernd Nawothnig)
Date: Sat, 14 May 2005 20:38:26 +0200
Subject: A new to Python question
References: <1116088663.428932.130860@g43g2000cwa.googlegroups.com>
	<rfnhl2-ig5.ln1@Bernd.Nawothnig.dialin.t-online.de>
	<1116093118.599403.35940@g14g2000cwa.googlegroups.com>
Message-ID: <26thl2-5q5.ln1@Bernd.Nawothnig.dialin.t-online.de>


> On 2005-05-14, M.E.Farmer wrote:

> (x,y,dotp,sumx,maxv) = abc(x,y,dotp,sumx,maxv)
> This will only create a tuple in memory that has no name to reference
> it by!

Maybe. But it does not seem to hurt. And I am not sure the tupel _is_
really created in that situation.

> How would you access the returned value?
> If you want a tuple you need to assign all the return vales to a single
> name.

We do not want the tuple.


Python 2.3.5 (#1, Apr 28 2005, 12:14:04)
[GCC 3.4.3-20050110 (Gentoo Linux 3.4.3.20050110-r2,
ssp-3.4.3.20050110-0, pie-
on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> def foo():
>>> ...     return 1,2,3
>>> ...
>>> (a,b,c)=foo()
>>> print a,b,c
1 2 3
>>>

works.

Of course, you can omit the ():

>>> a,b,c=foo()
>>> print a,b,c
1 2 3

That makes no difference.




Bernd

-- 
Those who desire to give up freedom in order to gain security,
will not have, nor do they deserve, either one. [T. Jefferson]


From jbo at cannedham.ee.ed.ac.uk  Thu May 26 07:02:01 2005
From: jbo at cannedham.ee.ed.ac.uk (Jim O'D)
Date: Thu, 26 May 2005 12:02:01 +0100
Subject: assignment, references and list comprehension
In-Reply-To: <mailman.130.1117104749.18027.python-list@python.org>
References: <d748km$1l4$1@scotsman.ed.ac.uk>
	<mailman.130.1117104749.18027.python-list@python.org>
Message-ID: <d74a6v$1so$1@scotsman.ed.ac.uk>


> trust me, it works the same way for all objects.
> 
> 

Yes, it was lack of trust that led me on a 2 hour re-write to avoid 
creating subsets of object lists as I thought they were being copied. In 
fact it was another error... huh.

I now know better.

Jim


From philippe at philippecmartin.com  Sat May 14 13:13:07 2005
From: philippe at philippecmartin.com (Philippe C. Martin)
Date: Sat, 14 May 2005 17:13:07 GMT
Subject: A new to Python question
References: <1116088663.428932.130860@g43g2000cwa.googlegroups.com>
Message-ID: <Dkqhe.1732$aM4.440@newssvr11.news.prodigy.com>

Hi,

You're thinking you're passing the arguments as reference (look at mutable
vs non-mutable)

Your function returns the values in a tupple (x,y,...); you need to fetch
the values from that tupple

Regards,

Philippe





David wrote:

> Hi I'm trying to teach myself python and so far to good, but I'm having
> a bit of trouble getting a function to work the way I think it should
> work.  Right now I'm taking a simple program I wrote in Fortran and
> trying to do it in Python.  I got it to work, but now I'm trying to
> modularize it.  My fortran program uses a subroutine and I was trying
> to do the same thing in Python.  But I'm still new so I'm having
> trouble understanding what I'm doing wrong.  Here is my code:
> 
> #! /usr/bin/python
> #This program takes two vectors and multiplies them
> #against a 10X10 array.  It also then gives the dot product,
> #sum, and max value of the array.
> 
> import Numeric
> def abc(array1,array2,dotprod,sum,maxvalue):
>     """Takes two arrays and performs predetermined calculations,
>        Then returns the solutions back as the same array, along
>        with the dot product, sum, and max value of the array."""
>     #TODO: Get this damn thing working!!
>     print "Array 1 in:",array1 #Debug
>     data = Numeric.zeros((10,10))
>     for i in range(10):
>         for j in range(10):
>             data[i,j] = (i+1)+(j+1)
> 
>     e = Numeric.matrixmultiply(data, array1)
>     g = Numeric.matrixmultiply(Numeric.transpose(data),array2)
>     array1 = e
>     array2 = g
>     dotprod = Numeric.dot(array1,array2)
>     sum = Numeric.sum(array1)
>     maxvalue = array2[Numeric.argmax(array2)]
>     print "Array 1 out:",array1 #Debug
> 
>     return array1,array2,dotprod,sum,maxvalue #<<-- Not working as I
> thought it would.
> 
> x = Numeric.arange(1,11)
> y = Numeric.arange(1,11)*2
> dotp,sumx,maxv = 0,0,0  #Is this the only way to declare a variable?
> 
> print 'Array X:',x
> print 'Array Y:',y
> abc(x,y,dotp,sumx,maxv)
> print 'Calling function abc'
> print 'Array X:',x
> print 'Array Y:',y
> print 'Dot Product of X and Y:',dotp
> print 'Sum of array X:',sumx
> print 'Max value of array Y:',maxv
> 
> If you run it the data gets passed to the function just fine and it
> finds the right numbers.  Its just getting it to pass them back thats
> not working.  I put some print statements inside the function just to
> see how the data gets passed.  So any ideas that would help me? If you
> want to see the fortran code just email me.
> 
> David



From adsheehan at eircom.net  Thu May  5 10:19:34 2005
From: adsheehan at eircom.net (adsheehan at eircom.net)
Date: 5 May 2005 07:19:34 -0700
Subject: SWIG and Python incompatibilities?
Message-ID: <1115302774.850678.317130@g14g2000cwa.googlegroups.com>

Hi all,

Has anyone experienced issues incompatible versions of the above?
On solaris, we are experiencing suspect crashes & memory leaks?


How do I determine which versions are proven to be
compatible/incompatible etc?

Thanks for helping.

Alan



From enleverlesO.OmcO at OmclaveauO.com  Thu May 19 15:49:46 2005
From: enleverlesO.OmcO at OmclaveauO.com (Do Re Mi chel La Si Do)
Date: Thu, 19 May 2005 21:49:46 +0200
Subject: Self-modifying Code
References: <1116522647.227661.99290@g43g2000cwa.googlegroups.com>
Message-ID: <428cedeb$0$25015$8fcfb975@news.wanadoo.fr>

Hi, you, also !

A view, with a little difference :


def titi(par):
    if par>222:
        return par*2
    else:
        return par*10

print titi(123)
print titi(1234)

#now, change the function, "on instant"
txt="""def titi(par):
    if par>222:
        return str(par)*2
    else:
        return str(par)*5
"""
exec(txt,globals(),globals())

print titi(123)
print titi(1234)






Michel Claveau





From gandalf at geochemsource.com  Mon May 23 06:32:13 2005
From: gandalf at geochemsource.com (Laszlo Zsolt Nagy)
Date: Mon, 23 May 2005 12:32:13 +0200
Subject: minidom and DTD
Message-ID: <4291B12D.2020400@geochemsource.com>


  Hi All,

How can I put the

<!DOCTYPE collection SYSTEM "recipes.dtd">

thing into an XML created by xml.dom.minidom?

Of course I can parse the generated XML file and insert the DOCTYPE string
but there must be a standard way to do this...

Best,

   Laci 2.0




From fredrik at pythonware.com  Tue May 10 03:28:27 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 10 May 2005 09:28:27 +0200
Subject: Unique Elements in a List
References: <1115676903.432187.294910@z14g2000cwz.googlegroups.com>
	<7xbr7jq3gb.fsf@ruckus.brouhaha.com>
Message-ID: <d5pnd2$56o$1@sea.gmane.org>

Paul Rubin wrote:

> > Is there an easy way to grab the Unique elements from a list?
> > For Example:
> > data = [0.1,0.5,0.6,0.4,0.1,0.5,0.6,0.9]
>
> Untested: here's an iterator that gives you the index and value,
> without reordering.  Uses dicts instead of sets for backwards compatibility.
>
> def unique_elements(data):
>     seen = {}
>     for n,x in data:
>        if x not in seen:
>           seen[x] = 1
>           yield n,x

you forgot enumerate()

and if you fix that, you'll notice that the output doesn't quite match
the OP's spec:

    > For Example:
    > data = [0.1,0.5,0.6,0.4,0.1,0.5,0.6,0.9]
    >
    > what I am looking for is the unique elements 0.4 and 0.9 with their
    > index from the list.

here's a straight-forward variation that gives the specified output,
in the original order:

    def unique_elements(data):
        count = {}
        data = list(enumerate(data))
        for n,x in data:
            count[x] = count.setdefault(x, 0) + 1
        for n,x in data:
            if count[x] == 1:
                yield x, n # value with index

depending on the data, it might be more efficient to store the
"last seen index" in a dictionary, and sort the result on the way
out (if necessary).  something like

    from operator import itemgetter

    def unique_elements(data):
        seen = {}; index = {}
        for n, x in enumerate(data):
            if x in seen:
                del index[x]
            else:
                index[x] = seen[x] = n
        index = index.items()
        index.sort(key=itemgetter(1)) # leave this out if order doesn't matter
        return index

could work.

</F>





From jeroen.kleijer at xs4all.nl  Thu May 12 12:57:37 2005
From: jeroen.kleijer at xs4all.nl (Jeroen Kleijer)
Date: Thu, 12 May 2005 18:57:37 +0200
Subject: Python with MSC.Mentat
Message-ID: <r427815amlkfbvv8vnsvqqb5lfdjg9orvt@4ax.com>


Hi all,

I'm running into a very strange problem at work.
We're using an application called MSC.Mentat (modelling/meshing
application) which provides a programmable interface through Python.

Because we were told that the Python version they ship is missing some
libraries we compiled it ourselves on both Solaris 9 and RedHat EL 3.0

When we use some of our inhouse scripts, which were written by a
student who has left us a long time ago, the scripts work great on the
Solaris version. (they were once written with Python 1.5 in mind so we
get some string/strop errors but nothin terribly wrong)

However, if we use the exact same method for our Linux version, Mentat
(which calls the Python scripts) core dumps with the following
messages:

Traceback (most recent call last):
  File "main_process.py", line 6, in ?
    from read_data_file import retrieve_param
  File "read_data_file.py", line 3, in ?
    from pickle import *
  File "pickle.py", line 33, in ?
    import struct
ImportError:
/cadappl/python/2.2.4-64/lib/python2.2/lib-dynload/struct.so:
undefined symbol: PyInt_FromLong
Exception py_mentat.error: 'Error in module main\n' in 'garbage
collection' ignored
Fatal Python error: unexpected exception during garbage collection

When I do an 'nm' on the struct.so file I can see that PyInt_FromLong
is undefined (along with a whole batch of others) but this is the same
on the Solaris version so that can't be it.

Do you have any idea what could cause this?

Kind regards,

Jeroen Kleijer


From f.geiger at vol.at  Sat May 28 12:25:15 2005
From: f.geiger at vol.at (F. GEIGER)
Date: Sat, 28 May 2005 18:25:15 +0200
Subject: Threading questions
References: <mailman.213.1117287469.18027.python-list@python.org>
Message-ID: <d7a60o$kn1$1@news.hispeed.ch>

Just an idea: You could have n data collector threads, that all put their
results into a queue connected to 1 db thread, that stores the results into
the db.

Cheers
Franz GEIGER


"Antal Rutz" <arutz at mimoza.pantel.net> schrieb im Newsbeitrag
news:mailman.213.1117287469.18027.python-list at python.org...
> Hi, All!
>
> I'm new to threading. I have some design questions:
> Task: I collect data and store them in an RDBMS (mysql or pgsql)
>
> The question is how to do that with threading?
> The data-collecting piece of the code runs in a thread.
>
> 1. Open the db, and each thread writes the result immediately.
>    (Sub-question: which is better: cursor object passed to the thread
>    or stored in a global var.)
> 2. Threads return data, which is written to DB after that.
> 3. Threads write to global variable, after 'join()' data is written.
>    (Can be used global (write-only) variables with threads at all?)
> 4. ?...
>
> I think variable locking isn't an issue here because they are write-only.
>
> Maybe I have fundamentaly misunderstood something...
>
> Thanks
>
> --
>
>
> --arutz
>




From richard at nospam.com  Tue May 31 12:50:46 2005
From: richard at nospam.com (Richard Townsend)
Date: Tue, 31 May 2005 17:50:46 +0100
Subject: Running twisted http server - "Method Not Allowed" error
References: <1117522245.401449.284880@g43g2000cwa.googlegroups.com>
Message-ID: <16ca062jt9ird$.a82zahn636co$.dlg@40tude.net>

On 30 May 2005 23:50:45 -0700, qwejohn at hotmail.com wrote:

> from twisted.web import server, resource
> from twisted.internet import reactor
> 
> class Simple(resource.Resource):
>     isLeaf = True
>     def render_GET(self, request):
>         return "<html>Hello, world!</html>"
> 
> site = server.Site(Simple())
> reactor.listenTCP(8080, site)
> reactor.run()   "
> 

Try adding the line:

    allowedMethods = ('GET',)

after the line 

    isLeaf = True

-- 
Richard


From ptmcg at austin.rr.com  Mon May  9 11:49:54 2005
From: ptmcg at austin.rr.com (Paul McGuire)
Date: 9 May 2005 08:49:54 -0700
Subject: replace string patern with different value
References: <1115645021.903836.262590@z14g2000cwz.googlegroups.com>
Message-ID: <1115653794.833258.236170@z14g2000cwz.googlegroups.com>

Well, not to be left out, here is a pyparsing solution.  But this looks
suspiciously like some form of mail-merge or templating application.
Google for 'python templating' for existing approaches to this problem.

Interestingly, using an iterator of L sidesteps a number of other
problems.  My original brute force version just used curelem as an
integer index into L, which required
1. a global declaration of curelem in replString
2. a separate variable to store the current element
3. a second command to increment curelem after saving the current
element
Changing curelem to be an iterator on the L list allowed me to collapse
all that junk down to a simple return statement, with no loss in
readability or maintainability.

-- Paul


from pyparsing import Literal
source = 'kode1 bla bla kode1 bla kode1'
L = [11,22,33]
curelem = iter(L)

def replString(st,loc,toks):
    return str( curelem.next() )

kode = Literal("kode1").setParseAction( replString )
newsource = kode.transformString( source )
print newsource

prints:
11 bla bla 22 bla 33



From mrstephengross at hotmail.com  Thu May  5 14:13:46 2005
From: mrstephengross at hotmail.com (mrstephengross)
Date: 5 May 2005 11:13:46 -0700
Subject: How to detect a double's significant digits
In-Reply-To: <mailman.59.1115316262.29826.python-list@python.org>
References: <1115314620.902071.323410@f14g2000cwb.googlegroups.com>
	<mailman.59.1115316262.29826.python-list@python.org>
Message-ID: <1115316826.659271.247350@o13g2000cwo.googlegroups.com>

Ok, that won't work. First of all, str() is not a function. If I want
to convert the float into a string, the conversion function will have
to use some kind of numeric precision, which will screw things up.
Consider this:

float f = 1.004;
ostringstream s;
s << f;
cout << s.str();

The above code may produce "1.004", or "1.0040", or "1.00400",
depending on the stream's precision setting. I need a way to detect the
number of digits to the right of decimal point *prior* to doing any
kind of string conversion.

--Steve



From jacobsmail at postmark.net  Mon May 23 01:53:21 2005
From: jacobsmail at postmark.net (Jacob H)
Date: 22 May 2005 22:53:21 -0700
Subject: Binding the names in a module in a class instance
Message-ID: <1116827601.256966.287070@f14g2000cwb.googlegroups.com>

Hello all,

I would like to be able to take a module full of class instances,
functions, etc and bind all its names to a separate container class in
a different module. I have come up with the following way to do it..

(module "globals")

class Container:
    pass
container = Container()

(module "all_the_stuff")

...define a bunch of stuff...

(module "main")

exec open("all_the_stuff.py").read() in globals.container.__dict__

I feel uneasy about this method. I foresee bad namespace clashes.
What's a better way? :)

Thanks in advance,
Jacob



From cfajohnson at gmail.com  Sun May 29 03:40:57 2005
From: cfajohnson at gmail.com (Chris F.A. Johnson)
Date: Sun, 29 May 2005 03:40:57 -0400
Subject: How do i read just the last line of a text file?
References: <1117341766.166081.132240@o13g2000cwo.googlegroups.com>
	<9v0om2-5fl.ln1@rogers.com> <429959E6.9040208@lexicon.net>
Message-ID: <998om2-5fl.ln1@rogers.com>

On Sun, 29 May 2005 at 05:57 GMT, John Machin wrote:
> Chris F.A. Johnson wrote:
> 
>> file = open(argv[1])          ## Open the file given on the command line
>> all_lines = file.readlines()  ## Read all the lines
> 
> I see your shadowing and raise you one obfuscation:

   ;)

> open = file(argv[1])          ## File the open given on the command line
> all_lines = open.readlines()  ## Read all the lines

   Such verbosity! (I excuse mine on the grounds that it was my first
   attempt at a Python program.)

all_lines = file(argv[1]).readlines()

   And to answer the question in the subject line:

last_line = file(argv[1]).readlines()[-1]

   Both of which assume "from sys import argv".


   Now I have to get serious and forget those bad habits.

-- 
    Chris F.A. Johnson                     <http://cfaj.freeshell.org>
    ==================================================================
    Shell Scripting Recipes: A Problem-Solution Approach, 2005, Apress
    <http://www.torfree.net/~chris/books/cfaj/ssr.html>


From kuleshov at cs.vsu.ru  Fri May 13 01:15:38 2005
From: kuleshov at cs.vsu.ru (Maxim Kuleshov)
Date: Fri, 13 May 2005 09:15:38 +0400
Subject: python 2.3.4, cx_Oracle 4.1 and utf-8 - trouble
Message-ID: <d61d15$qei$2@serv.vrn.ru>

Hello!

Trying to fetch long varchar2 column and get the following error:

cx_Oracle.DatabaseError: column at array pos 0 fetched with error: 1406

i.e. string buffer is not much enough to fetch the string.

# fragment of code...
myCon = cx_Oracle.connect(user, psw, dsn)
myCur = myCon.cursor()
myCur.execute("""
select COLUMN from TABLE where ID=1
""")
for record in myCur.fetchall():
# ...

Error is reproduced only if actual string value longer than half of
declared column size. For short strings all is ok.

If I print myCur.description, I get:

[('COLUMN', <type 'cx_Oracle.STRING'>, 250, 250, 0, 0, 1)]

250 - declared column max size, but I guess cx_Oracle allocates only 250
bytes(!), so if my string longer than 125 chars (utf-8 national char
occupies > 1 byte) - I get the error.

Is it bug or what? Any suggestions?

Extra info:
      OS - SuSE Linux 9.2
      Client - Oracle Client 9.2.0.1.0
      NLS_LANG="RUSSIAN_CIS.UTF8"

--
Best regards, Maxim Kuleshov


From tjreedy at udel.edu  Sun May 29 21:15:27 2005
From: tjreedy at udel.edu (Terry Reedy)
Date: Sun, 29 May 2005 21:15:27 -0400
Subject: __getattribute__ and __getattr__
References: <d7dgd4$29v$1@sea.gmane.org>
Message-ID: <d7dpam$jal$1@sea.gmane.org>


"Gigi" <gigi-s at bigfoot.com> wrote in message 
news:d7dgd4$29v$1 at sea.gmane.org...
> Hi,
> In the Python documentation regarding __getattribute__ (more attribute
> access for new style classes) it is mentioned that if __getattribute__
> is defined __getattr__ will never be called (unless called explicitely).
> Here is the exact citation:

Discrepancy reported in

https://sourceforge.net/tracker/?func=detail&atid=105470&aid=1204734&group_id=5470

Guido declared behavior right and doc wrong and in need of correction.

Terry J. Reedy





From qwweeeit at yahoo.it  Sun May 15 12:12:02 2005
From: qwweeeit at yahoo.it (qwweeeit at yahoo.it)
Date: 15 May 2005 09:12:02 -0700
Subject: mod_python and logging
In-Reply-To: <3eoorhF46dasU1@individual.net>
References: <3eoorhF46dasU1@individual.net>
Message-ID: <1116173522.258882.221970@g43g2000cwa.googlegroups.com>

Hi Daniel,
look at the thread I started ("Modifying a built-in function for
logging purposes").
http://groups.google.it/group/comp.lang.python/messages/56e905ff27462d91,8f431d9da6140849,95368b6d5db3237d,f1aa51de9139a751,79d9ad3b78f1b875,a7a68e017f064eca,1c203ffc19cdeaac,3e31db7958bffbf1,0889cc903a62266f?hl=it&thread_id=bd3b300a4d880820&mode=thread&noheader=1&_done=%2Fgroup%2Fcomp.lang.python%2Fbrowse_frm%2Fthread%2Fbd3b300a4d880820%2F1c203ffc19cdeaac%3Fhl%3Dit%26#doc_56e905ff27462d91
There you can find another approach to logging (limited, but specific)
and you can appreciate the point of view of various experts (I am not
one of them!).
Bye.



From ed at leafe.com  Mon May  2 19:59:03 2005
From: ed at leafe.com (Ed Leafe)
Date: Mon, 2 May 2005 19:59:03 -0400
Subject: [wxPython] Many wxPanel forms in 1 wxFrame
In-Reply-To: <d4uo3o$1ee4$1@node3.news.atman.pl>
References: <d4uo3o$1ee4$1@node3.news.atman.pl>
Message-ID: <1ceef98d52b2d8a4f0f7dfe508c383e4@leafe.com>

On Apr 29, 2005, at 9:48 PM, CYBER wrote:

> Is this possible to create 1 wxFrame and
> register more than 1 wxPanel in it.
> And select the one you want to show at the moment ?
>
> I'm trying to implement a multistep wizard under wxPython.
> I need to be able to hide and show windows inside my
> frame.

	You might want to look at Dabo. While Dabo is a full 3-tier 
application framework, the UI tier stuff can work all by itself. It 
wraps wxPython, greatly simplifying the code required to accomplish 
anything in the UI.

	In your case, there is a Dabo Wizard class, along with a Wizard Page 
class. You can look at the AppWizard, which allows you to create a 
fully-functional database app in about 30 seconds. The AppWizard itself 
is written in Dabo (we eat our own dogfood!), and it might show you how 
easy it is to create something like this.

      ___/
     /
    __/
   /
  ____/
  Ed Leafe
  http://leafe.com/
  http://dabodev.com/



From cam.ac.uk at mh391.invalid  Sun May  1 19:12:45 2005
From: cam.ac.uk at mh391.invalid (Michael Hoffman)
Date: Mon, 02 May 2005 00:12:45 +0100
Subject: Writing to log file when script is killed
In-Reply-To: <1114982547.096114.223350@z14g2000cwz.googlegroups.com>
References: <1114851873.072376.225820@z14g2000cwz.googlegroups.com>
	<1114864012.637007.295800@z14g2000cwz.googlegroups.com>
	<mailman.66.1114885702.14961.python-list@python.org>
	<1114982547.096114.223350@z14g2000cwz.googlegroups.com>
Message-ID: <d53npj$6pf$1@gemini.csx.cam.ac.uk>

wittempj at hotmail.com wrote:
> Ok, I was sloppy - I meant the regular kill, not the -9 version...

You're still being sloppy. ;) The "-9 version" is called SIGKILL, hence 
the confusion (actually I doubt anyone is confused).

What you mean is SIGTERM. Call it that and you will be safe even from 
the most demanding of pedants.
-- 
Michael Hoffman


From Florian.Lindner at xgm.de  Wed May 11 06:41:35 2005
From: Florian.Lindner at xgm.de (Florian Lindner)
Date: Wed, 11 May 2005 12:41:35 +0200
Subject: Problems with csv module
Message-ID: <d5sngn$l4$03$1@news.t-online.com>

Hello,
I've one problem using the csv module.
The code: 

        self.reader = csv.reader(f, delimiter = ",")

works perfectly. But when I use a variable for delimiter:

        self.reader = csv.reader(f, delimiter = Adelimiter)

I get the traceback:


File "/home/florian/visualizer/ConfigReader.py", line 13, in __init__
    self.reader = csv.reader(f, delimiter = Adelimiter)
TypeError: bad argument type for built-in operation


The command

print "Adelimiter: ", Adelimiter, len(Adelimiter)

prints

Adelimiter:  , 1

So I think Adelimiter is ok?!

What is wrong there?

It is Python 2.3.5.

Thx,

Florian


From cyril.bazin at gmail.com  Tue May 24 10:41:40 2005
From: cyril.bazin at gmail.com (Cyril BAZIN)
Date: Tue, 24 May 2005 16:41:40 +0200
Subject: searching substrings with interpositions
In-Reply-To: <1116939594.958040.14110@z14g2000cwz.googlegroups.com>
References: <1116926253.186047.195260@g43g2000cwa.googlegroups.com>
	<3fgekjF7lq3qU1@individual.net>
	<1116939594.958040.14110@z14g2000cwz.googlegroups.com>
Message-ID: <a10b8d6205052407413637ab91@mail.gmail.com>

Just another solution, pretty and effective:

def fct(a, b):
idx = -1
for c in a:
idx = b.find(c, idx+1)
if idx == -1:
return False
return True


On 24 May 2005 06:06:03 -0700, borges2003xx at yahoo.it <borges2003xx at yahoo.it> 
wrote:
> 
> thanx everyone, is what i need.
> As Claudio argues, it's a standard problem of dna sequences
> comparation.
> the next step of my job is to make limits of lenght of interposed
> sequences (if someone can help me in this way i'll apreciate a lot)
> thanx everyone.
> giorgio
> 
> --
> http://mail.python.org/mailman/listinfo/python-list
>
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From news at NOwillmcguganSPAM.com  Thu May  5 10:34:18 2005
From: news at NOwillmcguganSPAM.com (Will McGugan)
Date: Thu, 05 May 2005 15:34:18 +0100
Subject: wxPython custom list drawing?
In-Reply-To: <d5be5o$6s2$1@bagan.srce.hr>
References: <d5be5o$6s2$1@bagan.srce.hr>
Message-ID: <427a2eeb$0$2064$db0fefd9@news.zen.co.uk>

Ivan Voras wrote:
> Does wxPython (actually, the wx toolkit) support setting up ListCtrls or 
> similar to allow custom element drawing?
> 
> Something like generating an 'OnPaint()' event in which I could paint 
> whatever I like in a listbox element. (example from some other toolkits)


wx.VListBox allows you to render whatever you want for each item. You 
could also do something similar with a wx.Grid


Will McGugan
-- 
http://www.willmcgugan.com
"".join( [ {'*':'@','^':'.'}.get(c,None) or chr(97+(ord(c)-84)%26) for c 
in "jvyy*jvyyzpthtna^pbz" ] )


From john at castleamber.com  Wed May 11 20:35:35 2005
From: john at castleamber.com (John Bokma)
Date: 12 May 2005 00:35:35 GMT
Subject: Python Documentation (should be better?)
References: <mailman.398.1115843305.29826.python-list@python.org>
	<428276e8$0$318$626a14ce@news.free.fr>
	<mailman.411.1115854727.29826.python-list@python.org>
Message-ID: <Xns9653C72F4C83Dcastleamber@130.133.1.4>

Ivan Van Laningham wrote:

>  Python docs are not as good as PHP docs.

Oh my. I hope you are just making that up. PHP documentation is 
guesstimated on how PHP works on average. Add the online comments clutter 
and you probably are better off reading the source.

-- 
John                               MexIT: http://johnbokma.com/mexit/
                           personal page:       http://johnbokma.com/
        Experienced programmer available:     http://castleamber.com/
            Happy Customers: http://castleamber.com/testimonials.html


From rmm at iname.com  Fri May 13 06:52:54 2005
From: rmm at iname.com (rmm at iname.com)
Date: 13 May 2005 03:52:54 -0700
Subject: Trusted python
Message-ID: <1115981574.303746.150010@g44g2000cwa.googlegroups.com>

Here's a first attempt at trusted python.  I would be grateful if any
python gurus could point out the, no doubt obvious, flaws.
I've stopped fileobject working with patches to fileobject and
frameobject.  All child frames of the first 'trusted' frame are trusted
(checked using inspect.getouterframes(inspect.currentframe()).  Trusted
is a one-way switch.

Is there anything I'm missing about the python frame structure?
Is there any way of circumventing __getattribute__/__setattr__ ?
Is there any way of getting to builtins once the imported __builtin__
methods are replaced?

Regards

Ronnie Mackay


------------------Use example------------------------
import trusted
import inspect

l_trusted=trusted.Trusted(inspect.currentframe(),

['eval','reload','compile','input','execfile'],
                          [<list allowable modules>])

<...Attacks here...>

--------------- trusted.py ---------------
import __builtin__


class TrustedException(Exception): pass
class TrustedImportException(Exception): pass


class Trusted(object):

   def __init__(self, in_main_frame, in_exclude_builtins, in_modules):
      in_main_frame.trusted()   # **NOTE C PATCH. REMOVE THIS TO RUN
UNPATCHED
      object.__setattr__(self, '_m', in_modules)
      object.__setattr__(self, '_import', __builtin__.__import__)
      for l_builtin in
in_exclude_builtins:#__main__.__builtins__.__dict__.keys():
         __builtin__.__dict__[l_builtin]=object.__getattribute__(self,
'error')
      __builtin__.__import__=object.__getattribute__(self,
'trusted_import')


   def error(self, *args):
      raise TrustedException

   def trusted_import(self, in_name, in_globals=None, in_locals=None,
in_as=None):
      l_globals=in_globals or globals()
      l_locals=in_locals or locals()
      l_as=in_as or []
      if in_name in object.__getattribute__(self, '_m'):
         return object.__getattribute__(self, '_import')(in_name,
l_globals, l_locals, l_as)
      else:
         raise TrustedImportException(in_name)

   def __setattr__(self, name, value):
      raise TrustedException

   def __getattribute__(self, name):
      if name != 'trusted_import':
         raise TrustedException
      return object.__getattribute__(self, name)


---------------- attempts to open a file -------------------
NOTE: These can't be reproduced without patching python

Test :open('/dev/null') in the main module
Result :file() constructor not accessible in trusted mode
(exceptions.IOError)

Test : within an imported module, open('/dev/null')
Result :file() constructor not accessible in trusted mode
(exceptions.IOError)

Test :exec "open('/dev/null')"
Result :file() constructor not accessible in trusted mode
(exceptions.IOError)

Test :get file from base types
[(1).__class__.__bases__[0].__subclasses__()[-4]('/dev/null')]
Result :file() constructor not accessible in trusted mode
(exceptions.IOError)



From steven.bethard at gmail.com  Thu May 26 13:00:12 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Thu, 26 May 2005 11:00:12 -0600
Subject: os independent way of seeing if an executable is on the path?
Message-ID: <7e-dnaQeau8AnQvfRVn-1w@comcast.com>

This has probably been answered before, but my Google skills have failed 
me so far...

Is there an os independent way of checking to see if a particular 
executable is on the path?  Basically what I want to do is run code like:
     i, o, e = os.popen3(executable_name)
but I'd like to give an informative error if 'executable_name' doesn't 
refer to an executable on the path.

The idea is to differentiate between errors generated by not being able 
to run the program, and errors generated while running the program.  The 
former is a probably a configuration error by my user, the second is 
probably a logic error in my code (or perhaps an error on the executable 
I'm calling).

In Windows, I can read the error file, and get something like:
"'<program name>' is not recognized as an internal or external 
command,\noperable program or batch file.\n"
and I'm sure I could parse this, but this seems fragile, and clearly os 
dependent.

It's not crucial that I use os.popen3 as long as I have access to the 
input, output and error files.  I played around with subprocess for a 
while, but couldn't see any way to do this using that module either.

Thanks for the help,

STeVe


From beyer at imb-jena.de  Wed May 18 13:46:17 2005
From: beyer at imb-jena.de (Andreas Beyer)
Date: Wed, 18 May 2005 10:46:17 -0700
Subject: NaN support etc.
Message-ID: <428B7F69.9080807@imb-jena.de>

Hi,

How do I find out if NaN, infinity and alike is supported on the current 
python platform?
I could do the following:
try:
   nan = float('NaN')
   have_nan = True
except ValueError:
   have_nan = False

Is there an 'official' handle for obtaining this information?
Similar: How do I get the maximum/minimum double for current machine?

Thanks! Andreas

Please, cc me, as I am not on the list. Thanks!




From rupole at hotmail.com  Tue May 24 04:56:06 2005
From: rupole at hotmail.com (Roger Upole)
Date: Tue, 24 May 2005 04:56:06 -0400
Subject: Com object questions
References: <mailman.21.1116856657.18027.python-list@python.org>
Message-ID: <4292ed09$1_1@spool9-west.superfeed.net>

   I took a look at the code that generates the Record info, and it doesn't 
handle
records that don't have a guid (or more accurately, the guid is GUID_NULL).
They're still supposed to show up in the generated module with a comment
stating that they weren't handled.  However, it's trying to keep them in a 
dict
with guid as the key, and when you have several with GUID_NULL only the
last one ever shows up.  Best guess is that this particular record is one of 
the
ones getting zapped accidently.

   Looks like it should be possible to create a python record object from 
just the
name by getting the type info from the typelib and passing it to
GetRecordInfoFromTypeInfo.  Unfortunately, that function isn't wrapped by
pythoncom yet.  You might want to file a feature request with the Pywin32
project.

       Roger


"Gijs Korremans" <gijs at globaltrack.com> wrote in message 
news:mailman.21.1116856657.18027.python-list at python.org...


> Does IPADDRESSSTRUCT appear anywhere in the makepy-generated module ?
Specifically, there should be a RecordMap dict containing any defined
Records
and their GUID's.

No it's not in the genereted module, but it is in the COM Browser so I'm 
sure the struct is in the com object
Maybe I can find out somewhere what the GUID's is and put it in the RecodMap 
manually?

       Roger

"Gijs Korremans" <gijs at globaltrack.com> wrote in message
news:mailman.13.1116843178.18027.python-list at python.org...
Hi,

I'm still figuring out how I can use the win32com for the use of a com
object which I think is made in VB

First I've created a file with MakePy
Then I used the following code to init the com object:
import win32com.client
Client = win32com.client.Dispatch("ClientModule.Client")

Then, when I want to use a function, for example this one:
ipaddr = kddClient.GetLocalIPAddress()
I get this error:
File
"C:\Python23\lib\site-packages\win32com\gen_py\0F4570B8-4D39-47CD-84B4-8A424233EEBFx0x1x0.py",
line 69, in GetLocalIPAddress
  return self._ApplyTypes_(11, 1, (36, 0), (), 'GetLocalIPAddress', None,)
File "C:\Python23\lib\site-packages\win32com\client\__init__.py", line 446,
in _ApplyTypes_
  return self._get_good_object_(self._oleobj_.InvokeTypes(dispid, 0,
wFlags, retType, argTypes, *args),user, resultCLSID)
com_error: (-2147024809, 'The parameter is incorrect.', None, None)
I don't know which parameter is incorrect because the function doesn't need
any parameters

and when I try to use a struct for the IP address using the following code:
ipaddr = win32com.client.Record("IPADDRESS_STRUCT", Client)
I get this message:
File "C:\Python23\lib\site-packages\win32com\client\__init__.py", line 403,
in Record
  raise ValueError, "The structure '%s' is not defined in module '%s'" %
(name, package)
ValueError: The structure 'IPADDRESS_STRUCT' is not defined in module
'<module 'win32com.gen_py.0F4570B8-4D39-47CD-84B4-8A424233EEBFx0x1x0' from
'C:\Python23\lib\site-packages\win32com\gen_py\0F4570B8-4D39-47CD-84B4-8A424233EEBFx0x1x0.pyc'>'
I think this means that there is no struct IPADDRESS_STRUCT defined in the
com object but when I'm going to the ComBrowser in PythonWin it is in there.

I'm using python 2.3 with pywin32 build 203

Does anybody know what i'm doing wrong?

Kind regards,


Gijs <



Kind regards,


Gijs

--
This message has been scanned for viruses and
dangerous content by Network Sentry, and is
believed to be clean.
http://www.networksentry.co.za



----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==----
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From francois at a.a  Tue May 17 05:42:43 2005
From: francois at a.a (f)
Date: Tue, 17 May 2005 11:42:43 +0200
Subject: query progress bar
In-Reply-To: <mailman.65.1116284481.8733.python-list@python.org>
References: <mailman.65.1116284481.8733.python-list@python.org>
Message-ID: <d6ce89$imi$1@biggoron.nerim.net>

Timothy Smith wrote:
> is it possible to mke a progress bar for queries? say i have a query 
> that will take 20 seconds, i'd like to give some feed back to users on 
> how long this will take.

it is strictly impossible to predict that cause of network load, server 
load, query complexity ....

i recommend you put an activity widget, something moving (ie throbber in 
wxPython) while waiting for the result (like the rotating circle in 
firefox).

once query is finished stop your moving stuff, so the user knows it's 
completed.

So you don't need a progress bar, but an activity widget. in gtk, i saw 
that progress bar could be put in activity mode.

And don't forget to add a timeout ...

Fran?ois


From littlejohn.75 at news.free.fr  Tue May 17 14:27:19 2005
From: littlejohn.75 at news.free.fr (F. Petitjean)
Date: 17 May 2005 18:27:19 GMT
Subject: os.popen vs os.system
References: <d6dasg$32r$1@solaris.cc.vt.edu>
Message-ID: <428a3786$0$22794$636a15ce@news.free.fr>

Le Tue, 17 May 2005 13:50:08 -0400, rbt a ?crit :
> Is it more appropriate to use os.popen or os.system on a windows XP 
> client?

Nope. use the subprocess module  :-)

Microsoft had the great idea to embed white space inside a lot of
directories (compare C:\Program Files\ to /usr/bin ) which means that
you must find the right way to quote the command line string of
os.system() and this quoting is very tricky and under-documented. A
nightmare to thousands of developers which has a cost of millions of
dollars :-(

Exercice for the reader : write a windows application which can only be
invoked from the command line (or from another program) not by clicking
on a cute icon. Extra bonus points if the path to this executable
contain (after Program Files) a company name with some characters hard
to type on some keyboards (or with some locales), if the executable name
has also difficult to type characters and if the case is checked
(windows file system is case preserving).


From fredrik at pythonware.com  Thu May 26 13:46:51 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 26 May 2005 19:46:51 +0200
Subject: Store doctest verbose results to a variable
References: <1117125462.847390.112790@g49g2000cwa.googlegroups.com>
Message-ID: <d751uj$vf1$1@sea.gmane.org>

"mitchell" <mforal at gmail.com> wrote:

> Is it possible to store doctest's verbose output to a variable?
>
> For example:
>
>   import doctest, my_test_module
>   a = doctest.testmod(my_test_module)
>
> The contents of 'a' is the tuple of passed and failed results. I tried
> passing verbose mode to the testmod function, but 'a' is still a tuple.
>
> Any help is greatly appreciated.

the third example on this page

    http://effbot.org/librarybook/stringio.htm

shows one way to do that.

</F>





From fredrik at pythonware.com  Fri May 13 12:27:23 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Fri, 13 May 2005 18:27:23 +0200
Subject: mod_python seg faults with xml
References: <428460E8.1050006@mlug.missouri.edu>
Message-ID: <d62k2g$nm0$1@sea.gmane.org>

"Michael" wrote:

> Trying to process xml (xml-rpx) with a handler in mod_python crashes
> mod_python. Previous versions worked fine. Only change is I recompiled
> with newest versions of Apache, Python, and mod_python. No PHP or
> anything like that involved. Any idea why it seg faults when I try to
> import xmlrpclib and similar modules? Thanks.

apache and python uses different versions of the expat library, which
causes all sorts of problems.  the solution is to make sure that they're
both using the same expat version; see e.g.

    http://mail.python.org/pipermail/python-list/2004-December/256676.html

</F>





From duncan.booth at invalid.invalid  Thu May 26 12:10:10 2005
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 26 May 2005 16:10:10 GMT
Subject: Just remember that Python is sexy
References: <1116899839.323185.58350@g49g2000cwa.googlegroups.com>
	<v8adndXwp-hF4gnfRVn-ig@powergate.ca>
	<du7is16wiug.fsf@mozart.cc.tut.fi>
	<Xns96625FD0B248duncanbooth@127.0.0.1>
	<S5u*T8wPq@news.chiark.greenend.org.uk>
Message-ID: <Xns9662AEA5843A5duncanbooth@127.0.0.1>

Sion Arrowsmith wrote:

>>The name index implies it returns something you can use as an index to
>>get at the substring.
> 
> Unfortunately, -1 can of course be used as an index. Mind you, it
> would be perverse to expect to find the substring at it.
> 
That was my point. The returned index always points at the substring, 
therefore the function which returns a -1 isn't returning an index. 
Therefore index must be the one which raises an exception.


From steven.bethard at gmail.com  Thu May  5 14:30:53 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Thu, 05 May 2005 12:30:53 -0600
Subject: How to detect a double's significant digits
In-Reply-To: <1115317222.685180.62020@z14g2000cwz.googlegroups.com>
References: <1115314620.902071.323410@f14g2000cwb.googlegroups.com>
	<mailman.53.1115315497.29826.python-list@python.org>
	<1115315863.050413.275390@g14g2000cwa.googlegroups.com>
	<s6ydnVxK45ow_-ffRVn-qQ@comcast.com>
	<1115317222.685180.62020@z14g2000cwz.googlegroups.com>
Message-ID: <iZ-dnQkkqqTA--ffRVn-2Q@comcast.com>

mrstephengross wrote:
>>But, assuming you have your numbers as strings, I would suggest
> 
> looking
> at str.split() and len().
> 
> Well, the numbers are in fact stored as numbers, so string processing
> won't work.

How about:

py> def digits(f):
...     return len(str(f).split('.')[1].rstrip('0'))
...
py> for f in [0.103, 0.1030, 0.0103, 0.010300]:
...     print f, digits(f)
...
0.103 3
0.103 3
0.0103 4
0.0103 4

I believe the rstrip is unnecessary because I think str() will never 
produce additional following zeros, but you can guarantee it by calling 
rstrip if you want.

Note that, for example, 0.103 and 0.1030 are identical as far as Python 
is concerned, so I hope you're not hoping to show a difference between 
these two...

STeVe


From bokr at oz.net  Sun May 15 04:45:20 2005
From: bokr at oz.net (Bengt Richter)
Date: Sun, 15 May 2005 08:45:20 GMT
Subject: A new to Python question
References: <1116088663.428932.130860@g43g2000cwa.googlegroups.com><rfnhl2-ig5.ln1@Bernd.Nawothnig.dialin.t-online.de><1116093118.599403.35940@g14g2000cwa.googlegroups.com><tsKdnfF2xaKu3BvfRVn-iQ@comcast.com>
	<1116102355.715816.192840@z14g2000cwz.googlegroups.com>
	<mailman.12.1116136959.15315.python-list@python.org>
Message-ID: <4286fffb.215424243@news.oz.net>

On Sun, 15 May 2005 08:00:47 +0200, "Fredrik Lundh" <fredrik at pythonware.com> wrote:

>M.E.Farmer wrote:
>
>> I said exactly what I meant, the parentheses around the values creates
>> a tuple that you have no reference to!
>
>repeating it doesn't make you right; no extra tuple is created, and the
>parens are part of the syntax:
>
>    If the target is a target list enclosed in parentheses or in square
>    brackets: The object must be a sequence with the same number
>    of items as there are targets in the target list, and its items are
>    assigned, from left to right, to the corresponding targets.
>
>    http://docs.python.org/ref/assignment.html
>
>(originally, you had to use [] to unpack lists, and () or no parens only
>worked for tuples.  the ability to use an arbitrary sequence was added
>in 1.5)
>
Note that (x) without a comma doesn't unpack like [x] however:

 >>> (x)= 123,
 >>> x
 (123,)
 >>> [x]= 123,
 >>> x
 123
 >>> (x,)= 123,
 >>> x
 123
 >>> x,= 123,
 >>> x
 123

Also, BTW,

 >>> 123,
 (123,)
 >>> [123,]
 [123]

I.e., that last result is not [(123,)]

There's actually a bunch of context-sensitive things about commas that
you just have to get used to, in lists, tuples, function call arg lists,
subscripts (__getitem__ args), unpacking assignment targets, etc.

>on the other hand, the function you're calling in this example *does*
>create a tuple that you have no reference to after the assignment.
Yeah, but it would create that tuple whether there was an assignment
of the returned result or not. Collecting unconnected facts in one
breath remind me too much of political speeches ;-)
>that doesn't matter, of course, since the tuple is removed by the
>garbage collector immediately after it has been unpacked.
I'm too tired to figure a humorous segue ;-)

Regards,
Bengt Richter


From theoryboy at my-deja.com  Thu May 12 12:41:23 2005
From: theoryboy at my-deja.com (theoryboy at my-deja.com)
Date: 12 May 2005 09:41:23 -0700
Subject: Tix hlist and item_exists
Message-ID: <1115916083.513173.3930@z14g2000cwz.googlegroups.com>

I can't seem to get this function to work. If the item does not exist I
get an exception, rather than a return value of false. Here's an
example:


#!/usr/bin/python

from Tix import *

root = Tk()
listBox = HList(root)
item = "some item"
if not listBox.item_exists(item, 0):
	listBox.add(item, itemtype=TEXT, text=item)


Any ideas?

Peter



From gsakkis at rutgers.edu  Wed May 11 16:45:41 2005
From: gsakkis at rutgers.edu (George Sakkis)
Date: 11 May 2005 13:45:41 -0700
Subject: Python Documentation (should be better?)
References: <mailman.389.1115837608.29826.python-list@python.org>
	<rs2dnWXMCe-Rwx_fRVn-qw@comcast.com>
	<mailman.395.1115841498.29826.python-list@python.org>
Message-ID: <1115844341.926283.247680@g49g2000cwa.googlegroups.com>

> Cuz I think the Language Reference is really more of a grammer
reference and
> far too technical to look up simple things like "how to declare a
> function".
>
> I guess what I'm trying to say is that there is no manual (for the
language
> itself, not the modules).  There is just the tutorial that serves as
the
> manual.  I think it should evolve into a manual that is more
comprehensive
> and organized more like other programming manuals (chapter on control
> structures, functions, classes, inheritance, etc).

If what you miss mostly is a quick way to look up language features,
modules and APIs, the python quick reference is an excellent starting
point, especially for someone new to the language:
http://rgruet.free.fr/PQR24/PQR2.4.html (also linked from
http://www.python.org/doc/ along with other doc sources). It's
available in pdf as well. 

George



From dark.ryder at gmail.com  Fri May 13 10:06:34 2005
From: dark.ryder at gmail.com (dark.ryder at gmail.com)
Date: 13 May 2005 07:06:34 -0700
Subject: String formatting strangeness
References: <1115990147.880532.61730@o13g2000cwo.googlegroups.com>
	<mailman.27.1115992149.29328.python-list@python.org>
Message-ID: <1115993194.700676.169330@g47g2000cwa.googlegroups.com>

*hides face*  Groan!  This is what I get for trying to code first thing
in the morning.  Thanks, all, it works fine now...



From roy at panix.com  Sun May  8 20:15:12 2005
From: roy at panix.com (Roy Smith)
Date: Sun, 08 May 2005 20:15:12 -0400
Subject: __brace__ (PEP?)
References: <mailman.175.1115594947.29826.python-list@python.org>
Message-ID: <roy-DE30BB.20151208052005@reader1.panix.com>

James Stroud <jstroud at mbi.ucla.edu> wrote:
> why not have "__brace__" (or some other, better name) 
> for anobject{something}. Such braces might be useful for 
> cross-sectioning nested data structures:

This seems like a pretty esoteric operation to devote a bit of syntax to.  
It doesn't seem like something people want to do very often.


From temp at mclift.fsnet.co.uk  Wed May  4 15:37:38 2005
From: temp at mclift.fsnet.co.uk (temp at mclift.fsnet.co.uk)
Date: 4 May 2005 12:37:38 -0700
Subject: Sequences in list
References: <1115063524.407859.273070@o13g2000cwo.googlegroups.com>
	<d56519$qem$1@sea.gmane.org>
	<mailman.52.1115069676.6583.python-list@python.org>
	<1115146849.029539.85310@o13g2000cwo.googlegroups.com>
	<mailman.123.1115151219.6583.python-list@python.org>
Message-ID: <1115235458.567899.209210@o13g2000cwo.googlegroups.com>

I?ve had chance to look at your code. I had an idea that I the answer
to my problem some how involved breaking down the list into groups and
that the notes would be easier to work with as numbers. However, I
think your  ?make_diffs? function is really a very cunning way to
go about things ? I would have never have thought of that!

As to the latest update, that is very welcome and will allow me to
analyse the results given in more detail.

In answer to your questions ?

Are your search sequences really limited to 4 notes? ? No, just used
that as an example
How long are the pieces you are searching? ? Anything from the length
of a phrase to perhaps 32 bars, though maybe longer at some later date.
Do you not need to care about note lengths, only pitches. ? While
I?ve been trying to figure out a way to do this I?ve just
concentrated on pitches, but it would be great to be able to look at
the note lengths as well.
Are you really (as I inferred from your examples) looking only at
a 7-tone scale ? Yes, for the time being

Your code will identify sequences in a list, but how to index them? I
have an idea, which seems ridiculously long-winded, but should work.
First, put the groups from the ?make_diffs? function into a list
and do a search for the sequence identified from the
?compare_forms? function using the ?Knuth-Morris-Pratt?
function in the python cookbook. Then the positions in that list will
obviously be the same as those in the original.

Next is the problem of the interval between the individual groups of
the sequence. Using something along the lines of your ?make_diffs?
it should be a simple matter to see by what interval the groups in the
sequence are transposed.

Hmm? those last two paragraphs come across as the ranting of a mad
man. I?m off home to see if something like that works?

All the best and thanks again for the help,

Malcolm



From skip at pobox.com  Mon May 16 08:06:19 2005
From: skip at pobox.com (Skip Montanaro)
Date: Mon, 16 May 2005 07:06:19 -0500
Subject: German spam event [was: Re: Schily ueber Deutschland]
In-Reply-To: <s7tll2-qe9.ln1@Bernd.Nawothnig.dialin.t-online.de>
References: <mailman.22.1116170676.15315.python-list@python.org>
	<hpfkl2-303.ln1@Bernd.Nawothnig.dialin.t-online.de>
	<7x3bso6y4c.fsf@ruckus.brouhaha.com>
	<mailman.16.1116207715.8733.python-list@python.org>
	<s7tll2-qe9.ln1@Bernd.Nawothnig.dialin.t-online.de>
Message-ID: <17032.36027.931411.643501@montanaro.dyndns.org>


    Bernd> Looks like another windows worm. Now they seem to come with a
    Bernd> more sofisticated 'payload'. I am sure that will increase in the
    Bernd> future.  It is just the beginning ...

Indeed.  This turns out to be the Sober.Q worm.  Sober.P infected gazillions
of machines with its "free world cup tickets" scam, but didn't directly do
anything.  Apparently Friday it started upgrading itself to Sober.Q which
sent out the massive spread of right-wing racist spam.  Mail.python.org was
receiving about 15 spams per minute for an extended period of time - at
least 12 hours, probably much longer - on Saturday.

Skip


From tim.golden at viacom-outdoor.co.uk  Fri May 13 11:24:21 2005
From: tim.golden at viacom-outdoor.co.uk (Tim Golden)
Date: Fri, 13 May 2005 16:24:21 +0100
Subject: newbie - insert variable in pathname
Message-ID: <9A28C052FF32734DACB0A288A3533991EBB810@vogbs009.gb.vo.local>

[plsullivan63 at gmail.com]
| 
| Hello all,
| I have a username variable luser:
| 
| luser = win32api.GetUserName
| 
| I need to insert it into the following to replace the hardcoded
| "johndoe" in the pathname of GIS.GIS.Parcels:
| 
| GIS_GIS_Parcels = "Database
| Connections\\johndoe at GIS_srv-earth.sde\\GIS.GIS.Cadastral\\GIS
| .GIS.Parcels"

Just in case that's real code you've posted, you
should have:

luser = win32api.GetUserName () # note the brackets

otherwise you're simply binding the function
object to the name luser and not the result of
calling it.

But as to your actual question, you want to do something
like this:

x = "GIS_GIS_blah_blah\\%s at GIS_blah_blah" % luser

ie use %s within a string as a placeholder for the luser
string.

TJG

________________________________________________________________________
This e-mail has been scanned for all viruses by Star. The
service is powered by MessageLabs. For more information on a proactive
anti-virus service working around the clock, around the globe, visit:
http://www.star.net.uk
________________________________________________________________________


From fredrik at pythonware.com  Sat May 28 09:24:48 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Sat, 28 May 2005 15:24:48 +0200
Subject: How to load plugins as objects?
References: <pan.2005.05.28.09.11.45.563753@dontemailme.com>
Message-ID: <d79ran$85g$1@sea.gmane.org>

"censored" <censored at dontemailme.com> wrote:

> Hi. I'm hoping for a bit of programming guidance here ....
>
> I have an application I wrote (it's an irc bot fyi), with which I want to
> use plugins.
>
> Basically, I want there to be directory called plugins/ .
>
> In plugins, there should be a bunch of *.py files. Each file should
> contain a single class.
>
> When the application launches, I want the interpreter to scan the
> plugins/ dir for *.py files, and load each class in each every *.py file
> as an object an object in memory.
>
> I want it to so that every time I want the app to perform a new function,
> I just write a plugin and stick it in the plugins/ directory.
>
> What's the easiest way to go about this?

    for file in glob.glob("plugins/*.py"):
        ns = {}
        execfile(file, ns)
        for name, object in ns.items():
            # pick out interesting objects

</F>





From luis_lupe2XXX at netvisaoXXX.pt  Thu May 26 17:37:23 2005
From: luis_lupe2XXX at netvisaoXXX.pt (Luis P. Mendes)
Date: Thu, 26 May 2005 22:37:23 +0100
Subject: Pyrex: step in for loop
Message-ID: <3fmtshF8hj7vU1@individual.net>

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Hi,

I'm trying to improve speed in a module and substituted the pythonic
'for in range()' for 'for i from min < i < max:'

But, I need to define a step for the i variable.  How can I do it?

for example, how do I iterate through 80000 to 140000 with step 10000?

Luis
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.4 (GNU/Linux)
Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org

iD8DBQFClkGTHn4UHCY8rB8RAgZXAJ0XPg9IH0OU329FVX3o14QjNFXuXgCgm+UR
O0GpXmDpQr7Y7TgMsmVvZ6s=
=zZnm
-----END PGP SIGNATURE-----


From __peter__ at web.de  Sun May  1 03:03:36 2005
From: __peter__ at web.de (Peter Otten)
Date: Sun, 01 May 2005 09:03:36 +0200
Subject: Numeric/Numarray equivalent to zip ?
References: <1114849922.518669.105590@l41g2000cwc.googlegroups.com>
Message-ID: <d51uv7$9hj$03$1@news.t-online.com>

George Sakkis wrote:

> What's the fastest and most elegant equivalent of zip() in
> Numeric/Numarray between two equally sized 1D arrays ? That is, how to
> combine two (N,)-shaped arrays to one (N,2) (or (2,N)) shaped ? I
> expect the fastest and the most elegant idiom to be identical, as it is
> usually the case in this excellent library, but if not, both would be
> useful to know. Thanks,

>>> import Numeric as nu
>>> a = nu.array(range(3))
>>> nu.array([a, a])
array([[0, 1, 2],
       [0, 1, 2]])
>>> nu.transpose(nu.array([a, a]))
array([[0, 0],
       [1, 1],
       [2, 2]])

Or am I missing something? As to speed, it seems to be the fastest to
write...

Peter



From jhefferon at smcvt.edu  Sat May  7 07:53:52 2005
From: jhefferon at smcvt.edu (Jim)
Date: 7 May 2005 04:53:52 -0700
Subject: Encryption with Python?
In-Reply-To: <mailman.132.1115453413.29826.python-list@python.org>
References: <1115324411.952821.150780@o13g2000cwo.googlegroups.com>
	<mailman.132.1115453413.29826.python-list@python.org>
Message-ID: <1115466832.402555.25450@o13g2000cwo.googlegroups.com>

What machine did you say that was, again?

Jim



From peter at engcorp.com  Mon May  2 16:59:04 2005
From: peter at engcorp.com (Peter Hansen)
Date: Mon, 02 May 2005 16:59:04 -0400
Subject: Killing process
In-Reply-To: <1114949247.586471.313870@o13g2000cwo.googlegroups.com>
References: <1114823011.063614.27150@l41g2000cwc.googlegroups.com>
	<k8KdnRntjOUZQu_fRVn-qQ@powergate.ca>
	<1114832689.316806.136670@l41g2000cwc.googlegroups.com>
	<1IidnevlD6E2AO7fRVn-qg@powergate.ca>
	<1114949247.586471.313870@o13g2000cwo.googlegroups.com>
Message-ID: <fb2dndYA5_obCevfRVn-jg@powergate.ca>

Harlin Seritt wrote:
> I actually tried mapping the PID to an integer value and it still
> didn't work. At any rate, I found another way to do it. Thanks anyways.

For those who might follow in your footsteps, it might be nice to 
describe your solution...  (and to reduce the likelihood somebody will 
have to spend time repeating all those links and ideas again...)

Thanks,
-Peter


From fabienhenon_nospam_ at free.fr  Sun May  1 08:38:07 2005
From: fabienhenon_nospam_ at free.fr (fabien)
Date: Sun, 01 May 2005 14:38:07 +0200
Subject: gtk/qt scintilla help !
Message-ID: <4274cdc0$0$26837$626a14ce@news.free.fr>

Hi,

I am writing a POV-RAY editor with Python using either QT or GTK as GUI 
'wrapper'. ( I am still trying both )

* * * * PYGTK * * * *
I have downloaded PygtkScintilla-1.99.5.
There is a lexPOV.cxx file in the package, but I can not find any POV 
keywords in any file ( there are about 150 POV keywords). Did i miss it, 
and if not, how do I create one and include it for the library building ?

Anyway, I compiled pyscintilla and got a library file called 'scintilla.a'.
Now how do I link the scintilla.a library to this GTK script example :

8<--------------- snip ------------>8

import pygtk
pygtk.require('2.0')
import gtk
import scintilla


class GUI:
     def __init__(self):
         window = gtk.Window(gtk.WINDOW_TOPLEVEL)

         window.set_title("Pyvon")

         window.connect("destroy", lambda w:gtk.main_quit())

         table = gtk.Table(10,10)

         # Here we connect notifications as they are gtk signals as well
         editor = scintilla.Scintilla()
         #s.connect("CharAdded", char_added_notif)
         window.add(table)
         table.add(editor)
         editor.show()
         window.set_size_request(200, 300)
         window.show_all()
def main():
     gtk.main()
     return 0

if __name__ == "__main__":
     GUI()
     main()
8<--------------- snip ------------>8





The same goes for QT :



* * * * PYQT * * * *
I have also downloaded qscintilla-1.62-gpl-1.5.1.
As for GTK, I also found the LexPOV.cpp file, with no POV keywords in it 
and with no POV keywords in any of the file in the package.
The compilation builds then move the library libqscintilla.so to 
/usr/lib/qt3/lib.


How do I link the newly built library to the folling qt script :


8<--------------- snip ------------>8

import sys, string
from qt import *
from qtext import *


fileopen = [
     '16 13 5 1',
     '. c #040404',
     '# c #808304',
     'a c None',
     'b c #f3f704',
     'c c #f3f7f3',
     'aaaaaaaaa...aaaa',
     'aaaaaaaa.aaa.a.a',
     'aaaaaaaaaaaaa..a',
     'a...aaaaaaaa...a',
     '.bcb.......aaaaa',
     '.cbcbcbcbc.aaaaa',
     '.bcbcbcbcb.aaaaa',
     '.cbcb...........',
     '.bcb.#########.a',
     '.cb.#########.aa',
     '.b.#########.aaa',
     '..#########.aaaa',
     '...........aaaaa'
]

filesave = [
     '14 14 4 1',
     '. c #040404',
     '# c #808304',
     'a c #bfc2bf',
     'b c None',
     '..............',
     '.#.aaaaaaaa.a.',
     '.#.aaaaaaaa...',
     '.#.aaaaaaaa.#.',
     '.#.aaaaaaaa.#.',
     '.#.aaaaaaaa.#.',
     '.#.aaaaaaaa.#.',
     '.##........##.',
     '.############.',
     '.##.........#.',
     '.##......aa.#.',
     '.##......aa.#.',
     '.##......aa.#.',
     'b.............'
]

fileprint = [
     '16 14 6 1',
     '. c #000000',
     '# c #848284',
     'a c #c6c3c6',
     'b c #ffff00',
     'c c #ffffff',
     'd c None',
     'ddddd.........dd',
     'dddd.cccccccc.dd',
     'dddd.c.....c.ddd',
     'ddd.cccccccc.ddd',
     'ddd.c.....c....d',
     'dd.cccccccc.a.a.',
     'd..........a.a..',
     '.aaaaaaaaaa.a.a.',
     '.............aa.',
     '.aaaaaa###aa.a.d',
     '.aaaaaabbbaa...d',
     '.............a.d',
     'd.aaaaaaaaa.a.dd',
     'dd...........ddd'
]


fileOpenText = \
'''<img source="fileopen">
Click this button to open a <em>new file</em>.<br><br>
You can also select the <b>Open</b> command from the <b>File</b> menu.'''

fileSaveText = \
'''Click this button to save the file you are editing.<br><br>
You will be prompted for a filename.<br><br>
You can also select the <b>Save</b> command from the <b>File</b> menu.'''

filePrintText = \
'''Click this button to print the file you are editing.<br><br>
You can also select the <b>Print</b> command from the <b>File</b> menu.'''


editorList = []


class QSci(QextScintilla):
     def __init__(self,parent):
         QextScintilla.__init__(self,parent)

         self.setUtf8(1)

         #lex = QextScintillaLexerPython(self)
     #QextScintillaLexerCPP
     #lex = QextScintillaLexerCPP(self)
         #lex = QextScintillaLexerPov(self)
	lex = QextScintillalexerCSharp(self)
         self.setLexer(lex)

         self.setBraceMatching(QextScintilla.SloppyBraceMatch)
         self.setAutoIndent(1)
         self.setIndentationWidth(4)
         self.setIndentationGuides(1)
         self.setIndentationsUseTabs(0)
         self.setAutoCompletionThreshold(1)



class ApplicationWindow(QMainWindow):
     def __init__(self):
         QMainWindow.__init__(self,None,'example application main 
window',Qt.WDestructiveClose)

         self.filename = QString.null
         self.printer = QPrinter()

         self.fileTools = QToolBar(self,'file operations')

         openIcon = QPixmap(fileopen)
         self.fileOpen = QToolButton(QIconSet(openIcon),'Open 
File',QString.null,self.load,self.fileTools,'open file')

         saveIcon = QPixmap(filesave)
         self.fileSave = QToolButton(QIconSet(saveIcon),'Save 
File',QString.null,self.save,self.fileTools,'save file')

         printIcon = QPixmap(fileprint)
         self.filePrint = QToolButton(QIconSet(printIcon),'Print 
File',QString.null,self.printDoc,self.fileTools,'print file')

         QWhatsThis.whatsThisButton(self.fileTools)

         QWhatsThis.add(self.fileOpen,fileOpenText)
         QMimeSourceFactory.defaultFactory().setPixmap('fileopen',openIcon)
         QWhatsThis.add(self.fileSave,fileSaveText)
         QWhatsThis.add(self.filePrint,filePrintText)

         self.file = QPopupMenu(self)
         self.menuBar().insertItem('&File',self.file)

         self.file.insertItem('&New',self.newDoc,Qt.CTRL + Qt.Key_N)

         id = 
self.file.insertItem(QIconSet(openIcon),'&Open',self.load,Qt.CTRL + 
Qt.Key_O)
         self.file.setWhatsThis(id,fileOpenText)

         id = 
self.file.insertItem(QIconSet(saveIcon),'&Save',self.save,Qt.CTRL + 
Qt.Key_S)
         self.file.setWhatsThis(id,fileSaveText)

         id = self.file.insertItem('Save &as',self.saveAs)
         self.file.setWhatsThis(id,fileSaveText)

         self.file.insertSeparator()

         id = 
self.file.insertItem(QIconSet(printIcon),'&Print',self.printDoc,Qt.CTRL 
+ Qt.Key_P)
         self.file.setWhatsThis(id,filePrintText)

         self.file.insertSeparator()

         self.file.insertItem('&Close',self,SLOT('close()'),Qt.CTRL + 
Qt.Key_W)
 
self.file.insertItem('&Quit',qApp,SLOT('closeAllWindows()'),Qt.CTRL + 
Qt.Key_Q)

         self.view = QPopupMenu(self)
         self.menuBar().insertSeparator()
         self.menuBar().insertItem('&View',self.view)
         self.view.insertItem('Split',self.split)

         self.help = QPopupMenu(self)
         self.menuBar().insertSeparator()
         self.menuBar().insertItem('&Help',self.help)

         self.help.insertItem('&About',self.about,Qt.Key_F1)
         self.help.insertItem('About &Qt',self.aboutQt)

         self.splitter = QSplitter(self)
         self.e = QSci(self.splitter)
         self.e.setFocus()
         self.setCentralWidget(self.splitter)

         self.statusBar().message('Ready',2000)
         self.resize(450,600)

     def split(self):
         ssci = QSci(self.splitter)
         ssci.setDocument(self.e.document())
         ssci.show()

     def newDoc(self):
         ed = ApplicationWindow()
         ed.show()
         editorList.append(ed)

     def load(self):
         fn = QFileDialog.getOpenFileName(QString.null,QString.null,self)
         if fn.isEmpty():
             self.statusBar().message('Loading aborted',2000)
             return

         fileName = str(fn)

         self.e.clear()

         try:
             f = open(fileName,'r')
         except:
             return

         for l in f.readlines():
             self.e.append(l)

         f.close()

         self.setCaption(fileName)
         self.statusBar().message('Loaded document %s' % (fileName),2000)

     def save(self):
         if self.filename.isEmpty():
             self.saveAs()
             return

         try:
             f = open(str(self.filename),'w+')
         except:
             self.statusBar().message('Could not write to %s' % 
(self.filename),2000)
             return

         f.write(str(self.e.text()))
         f.close()

         self.e.setEdited(0)
         self.setCaption(self.filename)
         self.statusBar().message('File %s saved' % (self.filename),2000)

     def saveAs(self):
         fn = QFileDialog.getSaveFileName(QString.null,QString.null,self)
         if not fn.isEmpty():
             self.filename = fn
             self.save()
         else:
             self.statusBar().message('Saving aborted',2000)

     def printDoc(self):
         Margin = 10
         pageNo = 1

         if self.printer.setup(self):
             self.statusBar().message('Printing...')

             p = QPainter()
             p.begin(self.printer)
             p.setFont(self.e.font())
             yPos = 0
             fm = p.fontMetrics()
             metrics = QPaintDeviceMetrics(self.printer)

             for i in range(self.e.numLines):
                 if Margin + yPos > metrics.height() - Margin:
                     pageNo = pageNo + 1
                     self.statusBar().message('Printing (page %d)...' % 
(pageNo))
                     self.printer.newPage()
                     yPos = 0

                 p.drawText(Margin,Margin + 
yPos,metrics.width(),fm.lineSpacing(),Qt.ExpandTabs | 
Qt.DontClip,self.e.textLine(i))
                 yPos = yPos + fm.lineSpacing()

             p.end()
             self.statusBar().message('Printing completed',2000)
         else:
             self.statusBar().message('Printing aborted',2000)

     def closeEvent(self,ce):
         if not self.e.isModified():
             ce.accept()
             return

         rc = QMessageBox.information(self,'QScintilla Editor',
                     'The document has been changed since the last save.',
                     'Save Now','Cancel','Leave Anyway',0,1)

         if rc == 0:
             self.save()
             ce.accept()
         elif rc == 2:
             ce.accept()
         else:
             ce.ignore()

     def about(self):
         QMessageBox.about(self,'QScintilla Editor',
             'This is a framework for testing QScintilla.')

     def aboutQt(self):
         QMessageBox.aboutQt(self,'QScintilla Editor')


a = QApplication(sys.argv)
mw = ApplicationWindow()
mw.setCaption('Document 1')
mw.show()
a.connect(a, SIGNAL('lastWindowClosed()'), a, SLOT('quit()'))
a.exec_loop()

8<--------------- snip ------------>8


Thank you for any help


From phillip.watts at anvilcom.com  Mon May  2 14:58:07 2005
From: phillip.watts at anvilcom.com (phil)
Date: Mon, 02 May 2005 13:58:07 -0500
Subject: compare two voices
Message-ID: <4276783F.90601@anvilcom.com>

You didn't indicate how deep you want to get into
the code yourself.

I am gonna step way out of my mathematical depth here
and say this should not be too difficult in python.
1. you need to know the format of .wav
    surely it is a set of frequency amplitude pairs.
2. you need to know the sampling rate is the same,
     say its a hundred points per second, a five second
      speech is only a 500 hundred point pair of curves.
3. then perhaps a package like MatLAb would give you the
      curve fitting algorithms to obtain a score.
     It might even compensate for an average frequency
      diff between the two samples.

The difference in tonal quality between native Germans
and native Thais I would think would not enter into
it, because that is part of what you are testing for.

The math for comparing two waves which are different at
every point, have different base frequencies and different
rates is hellacious, but its been done.
Python would just be the wrapper, and a good one.



From jjl at pobox.com  Sun May 29 18:34:48 2005
From: jjl at pobox.com (John J. Lee)
Date: 29 May 2005 22:34:48 +0000
Subject: Software licenses and releasing Python programs for review
References: <1117245014.218831.317750@g14g2000cwa.googlegroups.com>
Message-ID: <87is11r793.fsf@pobox.com>

"poisondart" <poisondart985 at gmail.com> writes:
[...]
> Ultimately I desire two things from the license (but not limited to):
> - being able to distribute it freely, anybody can modify it
> - nobody is allowed to make profit from my code (other than myself)
[...]

If you believe it's feasible to get contributors to (literally) sign
over their copyright to you, consider dual GPL+commercial licensing.
Trolltech do this very successfully with their Qt GUI framework (they
also have educational licenses too, I believe, though the release of
Qt 4/Win under the GPL will presumably make those licenses redundant).

In general, people tend to find it very hard to get unpaid code
contributions if there are annoying restrictions such as prohibition
against commercial distribution of the code, which is one reason why
people pick BSD or GPL licenses.  Whatever you do, pick a standard,
well known license, simply because nobody has the time or inclination
to read somebody else's pet license.

(Of course, if the contributions you're most interested in aren't
copyrightable (comment on algorithms or scientific ideas, or
high-level feedback about the implementation of your code, for
example), all this may not be a big issue.)

Though they sometimes mix, the academic world is driven by different
motivations than the open source world, of course.  As someone from
the linguistics field, you're probably far better placed than we are
to know about the social environment in which your code will find
itself.  Unless there's another Linguistic Pythonista here ;-)


John


From exarkun at divmod.com  Sun May  8 17:33:52 2005
From: exarkun at divmod.com (Jp Calderone)
Date: Sun, 08 May 2005 21:33:52 GMT
Subject: Clueless with cPickle
In-Reply-To: <pan.2005.05.08.21.27.33.22267@yahoo.com>
Message-ID: <20050508213352.15422.815163595.divmod.quotient.26628@ohm>

On Sun, 08 May 2005 21:27:35 GMT, les <ordnancemarine at yahoo.com> wrote:
>I am working on a homework assignment and trying to use cPickle to store
>the answers from questor.py I believe I have the syntax correct but am not
>sure if I am placing everything where it needs to be.  Any help would be
>greatly appreciated.  When I attempt to run what I have I end up with the
>following:
>
>Traceback (most recent call last):
>  File "/home/les/workspace/Module 2/questor.py", line 18, in ?
>    f = file(questorlistfile)
>NameError: name 'questorlistfile' is not defined
>
>I thought that I had defined questorlistfile on the 4th line below
>
># define some constants for future use
>
>import cPickle as p
>#import pickle as p
>
>questorfile = 'questor.data' # the name of the file where we will 
 ^^^^^^^^^^^

  Note this variable name

>                             # store the object
>
>questorlist = []
>
># Write to the file
>f = file(questorfile, 'w')
>p.dump(questorlist, f) # dump the object to a file
>f.close()
>
>del questorlist # remove the shoplist
>
># Read back from the storage
>f = file(questorlistfile)
          ^^^^^^^^^^^^^^^

  Compare it with this variable name.

> [snip]

  Jp


From mwm at mired.org  Mon May 30 14:12:49 2005
From: mwm at mired.org (Mike Meyer)
Date: Mon, 30 May 2005 13:12:49 -0500
Subject: write to the same file from multiple processes at the same time?
References: <mailman.207.1117233035.18027.python-list@python.org>
	<b4df2$429ad977$3eb01f24$10471@news.flashnewsgroups.com>
	<32e45$429b073a$3eb01f24$23675@news.flashnewsgroups.com>
Message-ID: <8664x0twf2.fsf@guru.mired.org>

gabor <gabor at nekomancer.net> writes:

> ok, i ended up with the following code:
>
> def syncLog(filename,text):
>      f = os.open(filename,os.O_WRONLY | os.O_APPEND)
>      fcntl.flock(f,fcntl.LOCK_EX)
>      os.write(f,text)
>      #FIXME: what about releasing the lock?
>      os.close(f)
>
> it seems to do what i need ( the flock() call waits until he can get
> access).. i just don't know if i have to unlock() the file before i
> close it..

The lock should free when you close the file descriptor. Personally,
I'm a great believer in doing things explicitly rather than
implicitly, and would add the extra fcntl.flock(f, fcntl.LOCK_UN) call
before closing the file.

       <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From __peter__ at web.de  Wed May  4 12:35:49 2005
From: __peter__ at web.de (Peter Otten)
Date: Wed, 04 May 2005 18:35:49 +0200
Subject: descriptor dilemma
References: <1115216416.700492.71020@f14g2000cwb.googlegroups.com>
Message-ID: <d5atjv$k4q$04$1@news.t-online.com>

john wrote:

> Why do c.f and C.__dict__['f'].__get__(c,C) compare as equal under ==
> but not under *is*  ?

These variations are equivalent. Every  attribute access gives you a new
bound method:

>>> class C(object):
...     def f(self): pass
...
>>> c = C()
>>> c.f is c.f
False
>>> c.f == c.f
True

'a is b' is true only when the names a and b are bound to the same object.
For bound methods, c.f is c.f == True would mean that Python would have to
cache them, and I don't see a potential advantage of that.
'a == b' on the other hand does what the programmer specifies:

>>> class Str(str):
...     def __eq__(self, other): return True
...
>>> Str("black") == Str("blue")
True

It makes sense for bound methods to compare equal if they refer to the same
function and instance (though I don't know if the class is checked, too).

Peter



From http  Thu May 19 05:13:04 2005
From: http (Paul Rubin)
Date: 19 May 2005 02:13:04 -0700
Subject: Is Python suitable for a huge, enterprise size app?
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>
	<1116432325.497438.64580@g49g2000cwa.googlegroups.com>
	<1116433218.495131.71260@g49g2000cwa.googlegroups.com>
	<1116443474.565264.176640@g44g2000cwa.googlegroups.com>
	<7xd5rn93zi.fsf@ruckus.brouhaha.com>
	<mailman.198.1116493706.8733.python-list@python.org>
Message-ID: <7xu0kza89r.fsf@ruckus.brouhaha.com>

"Fredrik Lundh" <fredrik at pythonware.com> writes:
> did you read the PhotoImage documentation?  see e.g. the note at the
> bottom of this page:
> 
>     http://effbot.org/zone/tkinter-photoimage.htm

Thanks!  I hadn't seen that.  It explains what otherwise seemed
completely bizarre.

> (this used to be explained in the Python FAQ too, but it looks as if that
> was lost in the great FAQ reorganization).

I wouldn't have thought of looking there either.  Do you think you
could mention it in your Tkinter doc?  That would be a logical place
for it.


From saddle at gmail.com  Sat May 21 12:35:24 2005
From: saddle at gmail.com (saddle at gmail.com)
Date: 21 May 2005 09:35:24 -0700
Subject: Can you introduce some book about python?
In-Reply-To: <mailman.275.1116638412.8733.python-list@python.org>
References: <mailman.4989.1116624266.8732.python-list@python.org>
	<mailman.275.1116638412.8733.python-list@python.org>
Message-ID: <1116693324.663489.147610@g14g2000cwa.googlegroups.com>

if u r come from china, maybe python.cn is a good start :)



From janeaustine50 at hotmail.com  Sat May 14 12:11:31 2005
From: janeaustine50 at hotmail.com (janeaustine50 at hotmail.com)
Date: 14 May 2005 09:11:31 -0700
Subject: Anyway to designating the encoding of the "source" for compile?
Message-ID: <1116087091.856022.155340@z14g2000cwz.googlegroups.com>

Python's InteractiveInterpreter uses the built-in compile function.

According to the ref. manual, it doesn't seem to concern about the
encoding of the source string.

When I hand in an unicode object, it is encoded in utf-8 automatically.
It can be a problem when I'm building an interactive environment using
"compile", with a different encoding from utf-8. IDLE itself has the
same problem. ( '<a string with non-ascii-encoding>' is treated okay
but u'<a string with non-ascii-encoding>' is treated wrong.)

Any suggestions or any plans in future python versions?



From dale_huffman at steris.com  Tue May 24 12:38:31 2005
From: dale_huffman at steris.com (dale)
Date: 24 May 2005 09:38:31 -0700
Subject: Tk and raw_input segfault
Message-ID: <1116952711.388974.272420@o13g2000cwo.googlegroups.com>

Python newbie disclaimer on

I am running an app with Tkinter screen in one thread and command-line
input in another thread using raw_input().  First question - is this
legal, should it run without issue?  If not can you point me to a
description of why.

While updating objects on the screen I get a segfault after an
indeterminate number of updates.  It doesn't seem to matter how quickly
the updates occur, but it does segfault faster when there are more
objects on the screen ( as I said failure time seems to have a random
factor added to it ).

Commenting out the raw_input() makes problem go away.  I can schedule
as many updates as I wish without error.  And it doesn't seem to matter
if I actually hit any keys for raw_input(), it can just sit there.

I have read other posts about readline library failures with Esc O M
sequences and could not recreate those failures.

This happens on 2 separate machines

1st: development workstation
tk-8.4.6-28
tcl-8.4.6-23
Python 2.3.3 (#1, Feb  5 2005, 16:30:27)
[GCC 3.3.3 (SuSE Linux)] on linux2
Linux <name deleted> 2.6.5-7.151-smp #1 SMP Fri Mar 18 11:31:21 UTC
2005 x86_64 x86_64 x86_64 GNU/Linux

2nd: target machine
tk-8.4.6-37
tcl-8.4.6-26
Python 2.3.3 (#1, Apr  6 2004, 01:47:39)
[GCC 3.3.3 (SuSE Linux)] on linux2
Linux <name deleted> 2.6.4-52-default #1 Wed Apr 7 02:08:30 UTC 2004
i686 i686 i386 GNU/Linux

I have tried to simplify the code as much as possible to make error
more visible( no actual updates of the screen etc )  I've uncommented
the "after" code line so it fails much more rapidly.  I know its ugly
repeatedly scheduling the after but, the same code runs without the
raw_input, and it shows the error more readily.

To see the error start the code and click the button repeatedly until
it segfaults.  It will still segfault if you remove the 'command'
funtion and call update dirctly - it just takes a bit longer and your
wrist will probably get tired.

Thanks in advance for any responses.
------------------------------------------

from Tkinter import *
from time import sleep
import thread

class Test(Frame):
	def __init__(self, parent=None):
		Frame.__init__(self, parent, bg='white')

		# Button Definition: CLEAR ALL OUTPUTS
		caB = Button( self, text='CLEAR ALL\nOUTPUTS',\
			#command = (lambda: self.update()) )
			command = (lambda: self.command()) )
		caB.pack()
		self.updateCount = 0
		self.commanded = 0
		self.update()

	def command( self ):
		self.commanded = 1
		self.update()

	def update( self ):
		self.updateCount += 1
		print 'updatin... num = ', self.updateCount
		self.after( 1, self.update )

def test():
	root = Tk()
	root.geometry('640x480')
	Test().pack()
	root.mainloop()

if __name__ == '__main__':
	scanTID= thread.start_new_thread( test, () )
	sleep(1)

	while True:
			f= raw_input()
			print 'f=', f
			sleep(1)



From ruach at chpc.utah.edu  Wed May  4 12:25:54 2005
From: ruach at chpc.utah.edu (Matthew Thorley)
Date: Wed, 04 May 2005 10:25:54 -0600
Subject: How do you convert a string obj to a file obj?
Message-ID: <d5at2j$7uv$1@vegh.ks.cc.utah.edu>

I'm writing a web app whereby a user uploads a tar acrhive which is then
opened and processed. My web form reads the file like this:

while 1:
    data = value.file.read(1024 * 8) # Read blocks of 8KB at a time
    if not data: break

which leaves me with data as a string obj. The problem that I have is
that the function that processes the archive expects a file object. So
far the only solution I have found it to write the file to disk and then
read it back.

Is there an easy way to convert data, in the example above into a file
object?

Thanks
-Matthew


From ben.champion at gmail.com  Mon May  2 14:09:11 2005
From: ben.champion at gmail.com (Ben Champion)
Date: 2 May 2005 11:09:11 -0700
Subject: odeint function in SciPy
References: <1114630203.755082.285020@l41g2000cwc.googlegroups.com>
	<mailman.2597.1114631083.1799.python-list@python.org>
Message-ID: <2617fd5d.0505021009.3e6ddb21@posting.google.com>

Thanks for the link! I think it has the information I want in it (the
numerical method eg Runge-Kutta). However I am not sure which of the
solvers listed within that file is used by odeint.

All I want to achieve is to write a few lines on the mathematical
method used by odeint for my college project.

Many Thanks


From dieter at handshake.de  Fri May 20 16:07:06 2005
From: dieter at handshake.de (Dieter Maurer)
Date: 20 May 2005 22:07:06 +0200
Subject: Is Python suitable for a huge, enterprise size app?
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>
	<1116432325.497438.64580@g49g2000cwa.googlegroups.com>
	<1116433218.495131.71260@g49g2000cwa.googlegroups.com>
	<1116440427.255902.36260@g49g2000cwa.googlegroups.com>
	<mailman.194.1116489874.8733.python-list@python.org>
Message-ID: <x7wtptmzkl.fsf@handshake.de>

"Fredrik Lundh" <fredrik at pythonware.com> writes on Thu, 19 May 2005 09:54:15 +0200:
> ...
> and unless your operating system is totally braindead, and thus completely unfit
> to run huge enterprise size applications, that doesn't really matter much.  leaks
> are problematic, large peak memory use isn't.

Could you elaborate a bit?

Large peak memory use means that the application got a large
address space. What garantees that the residual memory use
(after the peak) is compact and not evenly spread across
the address space. While the OS probably is able to
reuse complete pages which are either unused for a longer
time or at least rarely accessed, it may become nasty when
almost every page contains a small amount of heavily used
memory.


Dieter


From pinard at iro.umontreal.ca  Wed May  4 11:45:59 2005
From: pinard at iro.umontreal.ca (=?iso-8859-1?Q?Fran=E7ois?= Pinard)
Date: Wed, 4 May 2005 11:45:59 -0400
Subject: Q: The `print' statement over Unicode
Message-ID: <20050504154559.GA6986@alcyon.progiciels-bpi.ca>

Hi, people.  I hope someone would like to enlighten me.

For any application handling Unicode internally, I'm usually careful
at properly converting those Unicode strings into 8-bit strings before
writing them out.

However, this morning, I mistakenly forgot to do so before using one
Unicode string (containing a non-ASCII character) as an argument to
the `print' statement, and I did _not_ get an error.  This is rather
surprising to me.  I reread the section of the Python reference manual
(version 2.3.4, this machine uses 2.3.3 currently), and it does not say
anything about a special processing for Unicode strings.

In my understanding, when `print' is given an argument which is not
already a string (I read: 8-bit string), it first gets converted into
a string (I read: calling __str__).  But if I call `str()' explicitly,
_then_ I get an error as expected.  The question is, why is there no
error if I do not call `str()' explicity?

For example, given file `question.py' with this contents:

   # -*- coding: UTF-8 -*-
   texte = unicode("Fran\xe7ois", 'latin1')
   print type(texte), repr(texte), texte
   print type(texte), repr(texte), str(texte)

doing `python question.py' yields:

   <type 'unicode'> u'Fran\xe7ois' Fran?ois
   <type 'unicode'> u'Fran\xe7ois'
   Traceback (most recent call last):
     File "question.py", line 4, in ?
       print type(texte), repr(texte), str(texte)
   UnicodeEncodeError: 'ascii' codec can't encode character u'\xe7' \
      in position 4: ordinal not in range(128)

(last line wrapped for legibility).

So (trying to be crystal clear), why is the first `print' working over
its third argument, but not the second?  How does `print' convert that
Unicode string to a 8-bit string for output, if not through `str()'?
What is missing to the documentation, or to my way of understanding it?

-- 
Fran?ois Pinard   http://pinard.progiciels-bpi.ca


From gsakkis at rutgers.edu  Mon May 16 20:59:12 2005
From: gsakkis at rutgers.edu (George Sakkis)
Date: 16 May 2005 17:59:12 -0700
Subject: Reg Date string conversion into timestamp function
References: <mailman.39.1116247518.8733.python-list@python.org>
Message-ID: <1116291552.099023.261710@g44g2000cwa.googlegroups.com>

"praba kar" <prabapython at yahoo.co.in> wrote:
>
> Dear All,
>
>      I have doubt regarding date string to time
> conversion function.  In Python I cannot find flexible
> date string conversion function like php strtotime. I
> try to use following type
> function
> 1) parsedate function failed if a date string
> like below format "16-MAY-2005 01:26"
> 2)parsedate_tz function also failed if a date string
> is different format
>
> if any one find some other date string conversion
> function kindly let me know

Check the other thread posted today with almost the same topic
(http://tinyurl.com/bpcg8).

George



From duncan.booth at invalid.invalid  Mon May  9 11:26:03 2005
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 9 May 2005 15:26:03 GMT
Subject: file corruption on windows - possible bug
References: <mailman.211.1115650500.29826.python-list@python.org>
Message-ID: <Xns9651A58A0C2D2duncanbooth@127.0.0.1>

Jeremy Jones wrote:

> Here is a small example piece of code to
> show the type of thing I'm doing::
> 
> #################################
> file_dict = {}
> 
> a_list = [("a", "a%s" % i) for i in range(2500)]
> b_list = [("b", "b%s" % i) for i in range(2500)]
> c_list = [("c", "c%s" % i) for i in range(2500)]
> d_list = [("d", "d%s" % i) for i in range(2500)]
> 
> 
> joined_list = a_list + b_list + c_list + d_list
> 
> for key, value in joined_list:
>     outfile = file_dict.setdefault(key, open("%s.txt" % key, "w"))
>     outfile.write("%s\n" % value)
> 
> for f in file_dict.values():
>     f.close()
> #################################
> 
> Problem is, when I run this on Windows, I get 14,520 null ("\x00")
> characters at the front of the file and each file is 16,390 bytes long. 

Your call to setdefault is opening the file for writing every time it is 
called, but using only the first handle to write to the file. I presume you 
get a nasty interaction between the file handle you are using to write and 
the other file handles which open the file in a destructive ("w") mode.

The fix is simply to only open each file once instead of 2500 times. e.g. 
(untested code)

for key, value in joined_list:
    if key in file_dict:
        outfile = file_dict[key]
    else:
        outfile = file_dict[key] = open("%s.txt" % key, "w")
    outfile.write("%s\n" % value)


From harlinseritt at yahoo.com  Sun May 29 15:33:55 2005
From: harlinseritt at yahoo.com (Harlin Seritt)
Date: 29 May 2005 12:33:55 -0700
Subject: How to learn OO of python?
In-Reply-To: <861x8337p7.fsf@guru.mired.org>
References: <mailman.130.1116402087.8733.python-list@python.org>
	<8764xg69nr.fsf@hector.domek>
	<1116417670.977767.235690@g14g2000cwa.googlegroups.com>
	<861x8337p7.fsf@guru.mired.org>
Message-ID: <1117395235.100930.145400@o13g2000cwo.googlegroups.com>

?



From http  Fri May 27 18:22:17 2005
From: http (Paul Rubin)
Date: 27 May 2005 15:22:17 -0700
Subject: write to the same file from multiple processes at the same time?
References: <mailman.205.1117232468.18027.python-list@python.org>
Message-ID: <7xmzqgnwbq.fsf@ruckus.brouhaha.com>

Jp Calderone <exarkun at divmod.com> writes:
> >Oh, ok.  But what kind of locks does it use?
> 
> It doesn't really matter, does it?

Huh?  Sure, if there's some simple way to accomplish the locking, the
OP's act can do the same thing without SQlite's complexity.

> I'm sure the locking mechanisms it uses have changed between
> different releases, and may even be selected based on the platform
> being used.

Well, yes, but WHAT ARE THEY??????


From elie at flashmail.com  Tue May 10 03:01:54 2005
From: elie at flashmail.com (Eli)
Date: 10 May 2005 00:01:54 -0700
Subject: Question about extending the interperter
References: <1115654593.479760.52610@o13g2000cwo.googlegroups.com>
	<mailman.225.1115666310.29826.python-list@python.org>
Message-ID: <1115705398.691970.141980@o13g2000cwo.googlegroups.com>

Thanks for the answer; I should better explain my problem.

My organization already has a DOS command line tool which I would like
to transffer to Python.
Every function this DOS command line too can execute has a definition
entry in an array:
 {"function name", function address, other info... },
Which means if 'function name' was enetered by the user the command
line tool will call 'function address'. Note that this is a *big*
array.

Now I'm trying to pass the above enteries to Python's interperter
extension:
One way would be going over all of my enteries and add Python calls
like that:

static PyMethodDef pmylib_methods[] = {
{"function name 1", pmylib_1, METH_VARARGS, "..."},
{"function name 2", pmylib_2, METH_VARARGS, "..."},
etc
...
}
The only problem I need to preprocess the input first (initialize
strtok).
So a solution would be creating 'function 1' which preprocess the input
and calls the original function 1, than do so for any other function.
This works, but there are *lots* of such enteries and I'm trying a
general way of doing so.
If I would have the full line the user enetered I could make all of the
extensions to call a general function which will call the original
functions (it can do so because it has the function address as a
parameter).
If I could get the full line the user has entered that would be great,
if that's possible.

Hope I've explained it correctly...
cheers,
Eli



From cs_girl14 at hotmail.com  Sat May  7 09:20:56 2005
From: cs_girl14 at hotmail.com (Lily Kakm)
Date: Sat, 07 May 2005 13:20:56 +0000
Subject: Ask for a tool to protect my .pyc file :)
Message-ID: <BAY24-F22527E1FA6EF0916C8A599951C0@phx.gbl>

when I distribute my software, I will give the users .pyc file (maybe I can 
use py2exe, but I think there's no essential different), because I don't 
like them to know my source code.

But actually, through .pyc file is not so directly as .py file, but the user 
can also easily guest the detail of the program. Because in the .pyc file, 
the name of the variables are exist.

I ask you for a tool. Maybe it can hide the name of the variables.

For example:

good_node = 100
bad_node = 500 - good_node

Using this tool, it can be like this :

xxxxxxxxxx = 100
xxxxxxxxxy = 500 - xxxxxxxxxx

It has the same function, but it can not easily be seen by the users.

Do you know where to download a tool like this.

Thank you very much!!

_________________________________________________________________
FREE pop-up blocking with the new MSN Toolbar - get it now! 
http://toolbar.msn.click-url.com/go/onm00200415ave/direct/01/



From bgs248 at hotmail.com  Wed May 18 19:03:11 2005
From: bgs248 at hotmail.com (bgs)
Date: 18 May 2005 16:03:11 -0700
Subject: Help on slow attribute copy
References: <mailman.171.1116453597.8733.python-list@python.org>
Message-ID: <1116457391.943711.304790@g44g2000cwa.googlegroups.com>

There's no way that loop takes fifteen minutes just because of the dot
operator.  I mean, 200000 dots in 15 minutes is 200 dots/second.  On a
1 GHz machine, that would be 5 million cycles per dot.   That does not
seem reasonable (assuming you haven't overridden the dot operator to do
something more complicated than normal).

Check that i.label does not have __hash__ overridden in a bad way.  I
tried a test case with __hash__ overridden to always return the same
integer, and I got performance about what you are describing when I
tried your example loop with 100000 iterations.

And, of course, make sure you are not low on memory and relying too
heavily on swap space.



From xah at xahlee.org  Mon May 23 06:23:04 2005
From: xah at xahlee.org (Xah Lee)
Date: 23 May 2005 03:23:04 -0700
Subject: What are OOP's Jargons and Complexities?
Message-ID: <1116843784.627059.146910@g47g2000cwa.googlegroups.com>


What are OOP's Jargons and Complexities
Xah Lee, 20050128

The Rise of Classes, Methods, Objects

In computer languages, often a function definition looks like this:
subroutine f (x1, x2, ...) {
  variables ...
  do this or that
}

In advanced languages such as LISP family, it is not uncommon to define
functions inside a function. For example:
subroutine f (x1, x2, ...) {
  variables...
  subroutine f1 (x1...) {...}
  subroutine f2 (x1...) {...}
}

Often these f1 f2 inner functions are used inside f, and are not
relevant outside of f. Such power of the language gradually developed
into a style of programing. For example:
subroutine a_surface () {
  coordinatesList = ...;
  subroutine translate (distance) {...}
  subroutine rotate (angle) {..}
}

Such a style is that the a_surface is no longer viewed as a function.
But instead, a boxed set of functions, centered around a piece of data.
And, all functions for manipulating this piece of data are all embodied
in this function. For example:
subroutine a_surface (arg) {
  coordinatesList = ...
  subroutine translate (distance) {set coordinatesList to translated
version}
  subroutine rotate (angle) {set coordinatesList to rotated version}
  subroutine return () {return coordinatesList}

  if (no arg) {return coordinatesList}
    else { apply arg to coordinatesList }
}

In this way, one uses a_surface as a data, which comes with its owe set
of functions:
mySurface = a_surface();
mySurface(rotate(angle));        // now the surface data has been
rotated
mySurface(translate(distance));  // now its translated
newSurface = mySurface(return())

So now, a_surface is no longer viewed as a subroutine, but a boxed set
of things centered around a piece of data. All functions that work on
the data are included in the boxed set. This paradigm possible in
functional languages has refined so much so that it spread to other
groups and became known as Object Oriented Programing, and complete
languages with new syntax catered to such scheme emerged.

In such languages, instead of writing them like this:
mySurface = a_surface();
mySurface(rotate(angle));

the syntax is changed to like this, for example:
mySurface = new a_surface();
mySurfaceRotated = mySurface.rotate(angle);

In such languages, the super subroutine a_surface is no longer called a
function or subroutine. It is now called a ?Class?. And now the
variable holding the function "mySurface = a_surface()" is now called a
?Object?. Subroutines inside the function a_surface() are no longer
called inner-subroutines. They are called ?Methods?. The act of
assigning a super-subroutine to a variable is called instantiation.

This style of programing and language have become so fanatical that in
such dedicated languages like Java, everything in the language are
?Classes?. One can no longer just define a variable or subroutine.
Instead, one creates these meta-subroutine ?Classes?. Everything
one do are inside Classes. And one assign Classes inside these Classes
to create ?Objects?. And one uses ?Methods? to manipulate
Objects. In this fashion, even basic primitives like numbers, strings,
and lists are no longer atomic entities. They are now Classes.

For example, in Java, a string is a class String. And inside the class
String, there are Methods to manipulate strings, such as finding the
number of chars, or extracting parts of the string. This can get very
complicated. For example, in Java, there are actually two Classes of
strings: One is String, and the other is StringBuffer. Which one to use
depends on whether you intend to change the data.

So, a simple code like this in normal languages:
a = "a string";
b = "another one";
c = join(a,b);
print c;

or in lisp style
(set a "a string")
(set b "another one")
(set c (join a b))
(print c)

becomes in pure OOP languages:
public class test {
  public static void main(String[] args) {
    String a = new String("a string");
    String b = new String("another one");
    StringBuffer c = new StringBuffer(40);
    c.append(a); c.append(b);
    System.out.println(c.toString());
    }
}

Here, the "new String" creates a String object. The "new
StringBuffer(40)" creates the changeable string object StringBuffer,
with room for 40 chars. "append" is a method of StringBuffer. It is
used to join two Strings.

Notice the syntax "c.append(a)", which we can view it as calling a
inner subroutine "append", on a super subroutine that has been assigned
to c, where, the inner subroutine modifies the inner data by appending
a to it.

And in the above Java example, StringBuffer class has another method
"toString()" used to convert this into a String Class, necessary
because System.out.println's parameter requires a String type, not
StringBuffer.

For a example of the complexity of classes and methods, see the Java
documentation for the StringBuffer class at
http://java.sun.com/j2se/1.4.2/docs/api/java/lang/StringBuffer.html
(local copy)

In the same way, numbers in Java have become a formalization of many
classes: Double, Float, Integer, Long... and each has a bunch of
"methods" to operate or convert from one to the other.

Instead of
aNumber = 3;
print aNumber^3;

In Java the programer needs to master the ins and outs of the several
number classes, and decide which one to use. (and if a program later
needs to change from one type of number to another, it is often
cumbersome.)

This Object Oriented Programing style and dedicated languages (such as
C++, Java) have become a fad like wild fire among the programing mass
of ignoramuses in the industry. Partly because of the data-centric new
perspective, partly because the novelty and mysticism of new syntax and
jargonization.

It is especially hyped by the opportunist Sun Microsystems with the
inception of Java, internet, and web applications booms around 1995. At
those times, OOP (and Java) were thought to revolutionize the industry
and solve all software engineering problems, in particular by certain
"reuse of components" concept that was thought to come with OOP.

As part of this new syntax and purity, where everything in a program is
of Classes and Objects and Methods, many complex issues and concept
have arisen in OOP.

We now know that the jargon Class is originally and effectively just a
boxed set of data and subroutines, all defined inside a subroutine. And
the jargon "Object" is just a variable that has been set to this super
subroutine. And the inner subroutines are what's called Methods.

----------
to be continued tomorrow.

This is part of an installment of the article
?What are OOP's Jargons and Complexities?
by Xah Lee, 20050128. The full text is at
 http://xahlee.org/Periodic_dosage_dir/t2/oop.html

? Copyright 2005 by Xah Lee. Verbatim duplication of the complete
article for non-profit purposes is granted.

The article is published in the following newsgroups:
comp.lang.c,comp.lang.c++,comp.lang.lisp,comp.unix.programmer
comp.lang.python,comp.lang.perl.misc,comp.lang.scheme,comp.lang.java.programmer
comp.lang.functional,comp.object,comp.software-eng,comp.software.patterns

 Xah
 xah at xahlee.org
? http://xahlee.org/



From could.net at gmail.com  Wed May 18 03:41:24 2005
From: could.net at gmail.com (could ildg)
Date: Wed, 18 May 2005 15:41:24 +0800
Subject: How to learn OO of python?
Message-ID: <311b5ce10505180041461f17ea@mail.gmail.com>

I have learned python for over a month.
I heard that it was very easy to learn, but when I tried to know OO of python,
I found it really weird, some expressions seem very hard to understand,
and I can't find enough doc to know any more about it.
So, I wonder how did you master python? And where to find some cool docs?

Thanks.


From lance.ellinghaus at eds.com  Thu May 19 08:41:56 2005
From: lance.ellinghaus at eds.com (Ellinghaus, Lance)
Date: Thu, 19 May 2005 08:41:56 -0400
Subject: Is Python suitable for a huge, enterprise size app?
Message-ID: <F23F5B9B3660114791BD9810CE92DE8706A7AC@ushrm232.amer.corp.eds.com>

That is why you can distribute only the .pyc files and not the .py
files. This would be like distributing the .class files and not giving
out the .java files.

I had this issue at a company in the late 1980's and why I submitted the
patches to make Python not require the .py files if the .pyc files
existed.
Now days, you can go one step further and zip up the .pyc files into a
single zip file and distribute that instead of individual .pyc files.

If you really want to go further, you can also modify the module loading
code and encrypt the .pyc files when they are generated from the .py
files. Your module loading code can then decrypt the .pyc files at load
time.

Lance Ellinghaus
I speak for myself and not for the company I work for.

-----Original Message-----
From: python-list-bounces+lance.ellinghaus=eds.com at python.org
[mailto:python-list-bounces+lance.ellinghaus=eds.com at python.org] On
Behalf Of Maurice LING
Sent: Thursday, May 19, 2005 8:20 AM
To: python-list at python.org
Subject: Re: Is Python suitable for a huge, enterprise size app?


> 
>> You can
>>see Python going down the sewer pipes, right on their faces.  Two, 
>>security.  "This python sounds pretty interesting.  Tell me about the 
>>security.  How can we prevent people from stealing our source code, 
>>which we just spent millions developing?  ...  Hmm, trust the 
>>developers out there not to peek?  Oh, sure, let's use it."
> 
> 
> Just like Java, which is so easy to reverse-engineer...
> 
> 
It makes big difference (legally) to if the codes are there and someone
sees it, to if the codes are locked in some packaged or zipped form and
someone reverse-engineer it. It is legally as different as if you drop
money on the ground and I pick it up, to pick-pocketing you and take the
money.

Nobody seems to be able to understand this simple logic.

Yes, Java class files can be reverse-engineered quite easily but the act
of doing that is criminal, unless performed under specified Council
Directives (in EU) or under any statutory law in specific countries. But
the act of looking at the codes if it is there is not criminal, just
like reading a book in bookstore. If anyone can program in binary today,
no codes will be safe with them anyway...

maurice
--
http://mail.python.org/mailman/listinfo/python-list


From ggg at zzz.it  Mon May 30 05:52:47 2005
From: ggg at zzz.it (deelan)
Date: Mon, 30 May 2005 11:52:47 +0200
Subject: Design problem, call function from HTML?
In-Reply-To: <3be7534e.0505300116.3dbba49@posting.google.com>
References: <3be7534e.0505300116.3dbba49@posting.google.com>
Message-ID: <qk4rm2-vb4.ln1@news.interplanet.it>

bart wrote:
(...)
> Is there any remote possibility u can pulloff the same in python? Now
> i have to process my data to display page and do it again to generate
> my image (execute same code twice).
> 
> One solution would be to save the image to harddisk and then load it.
> But rather keep it clean as return value.

something like Cheetah might help here:

 >>> from Cheetah.Template import Template
 >>> t = '<img src="$image">'

 >>> data = {}
 >>> data['img'] = 'foo.jpg'
 >>> def image(): return data['img']
...
 >>> T = Template(source=t, searchList=[{'image':image}])
 >>> T
<img src="foo.jpg">

...or you can access "img" directly in the template:

 >>> t = '<img src="$image.img">'
 >>> data = {}
 >>> data['img'] = 'foo.jpg'
 >>> T = Template(source=t, searchList=[{'image':data}])
 >>> T
<img src="foo.jpg">

say that "data" changes, you don't have to compile the template
again, just issue a render command again:

 >>> data['img'] = 'BAZ.jpg'
 >>> T
<img src="BAZ.jpg">


see:
<http://cheetahtemplate.org/>



-- 
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
<#me> a foaf:Person ; foaf:nick "deelan" ;
foaf:weblog <http://blog.deelan.com/> .


From tim.golden at viacom-outdoor.co.uk  Tue May 24 12:00:17 2005
From: tim.golden at viacom-outdoor.co.uk (Tim Golden)
Date: Tue, 24 May 2005 17:00:17 +0100
Subject: py2exe for WMI
Message-ID: <9A28C052FF32734DACB0A288A3533991EBB84E@vogbs009.gb.vo.local>

[Thomas Heller]

[... snip problems with py2exe & WMI ...]

| The OP of the thread Tim mentions here already had a solution, if I 
| understood him correctly, and the other things that were suggested 
| didn't work.  Basically, IIUC, he did add the typelib 
| wrappers from the 
| 'other' windows version manually to the library.zip file.
| 
| Totally different solutions would be:
| - change Tim's wmi.py module so that it works with dynamic 
| binding (no 
| typelib wrappers needed)
| or

Well, if it helps, there's a version of the WMI module
that uses dynamic binding on my site:

http://timgolden.me.uk/python/downloads/wmi-0.6a.py

I've hardcoded the relevant constants (which is pretty 
much all I was using early binding for) and replaced 
any other EnsureDispatch calls with simple Dispatch.

Does anyone want to give it a try to let me know if
it helps? I don't use py2exe myself.

TJG


________________________________________________________________________
This e-mail has been scanned for all viruses by Star. The
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From bronger at physik.rwth-aachen.de  Sat May 21 05:01:19 2005
From: bronger at physik.rwth-aachen.de (Torsten Bronger)
Date: Sat, 21 May 2005 11:01:19 +0200
Subject: IDLE 1.0.5 crashs on Windows
Message-ID: <87ekc1ymu8.fsf@wilson.rwth-aachen.de>

Hall?chen!

I've installed Python 2.3.5, IDLE 1.0.5 on a Win2k box and have
fatal Windows errors with a trivial script.  You can see a
screenshot of the problem at
<http://www-users.rwth-aachen.de/torsten.bronger/idle_error.png>.
My script (on the left side) is trivial, namely

def _to_int(x):
    return x

VI_SUCCESS                   = _to_int(0x00000000)
VI_SUCCESS_EVENT_EN          = _to_int(0x3FFF0002)
VI_SUCCESS_EVENT_DIS         = _to_int(0x3FFF0003)
VI_SUCCESS_QUEUE_EMPTY       = _to_int(0x3FFF0004)
VI_SUCCESS_TERM_CHAR         = _to_int(0x3FFF0005)
VI_SUCCESS_MAX_CNT           = _to_int(0x3FFF0006)
...


The shell window says the following:

Python 2.3.5 (#62, Mar 22 2005, 21:53:13) [MSC v.1200 32 bit (Intel)] on win32
Type "copyright", "credits" or "license()" for more information.

    ****************************************************************
    Personal firewall software may warn about the connection IDLE
    makes to its subprocess using this computer's internal loopback
    interface.  This connection is not visible on any external
    interface and no data is sent to or received from the Internet.
    ****************************************************************
    
IDLE 1.0.5      ==== No Subprocess ====
>>> Exception in Tkinter callback
Traceback (most recent call last):
  File "C:\Programme\Python23\lib\lib-tk\Tkinter.py", line 1345, in __call__
    return self.func(*args)
  File "C:\Programme\Python23\lib\idlelib\ScriptBinding.py", line 135, in run_module_event
    code = self.checksyntax(filename)
  File "C:\Programme\Python23\lib\idlelib\ScriptBinding.py", line 96, in checksyntax
    return compile(source, filename, "exec")
  File "C:\Programme\Python23\lib\warnings.py", line 116, in warn_explicit
    showwarning(message, category, filename, lineno)
  File "C:\Programme\Python23\lib\idlelib\PyShell.py", line 55, in idle_showwarning
    file.write(warnings.formatwarning(message, category, filename, lineno))
IOError: [Errno 9] Bad file descriptor


Then it hangs, i.e., I can't input anything.  Does anybody know why
this happens?

Thank you!

Tsch?,
Torsten.

-- 
Torsten Bronger, aquisgrana, europa vetus


From modelnine at ceosg.de  Mon May  2 03:06:55 2005
From: modelnine at ceosg.de (Heiko Wundram)
Date: Mon, 2 May 2005 09:06:55 +0200
Subject: socket error on windows,  working fine on mac
In-Reply-To: <20050502023305.B26B937A01@mail.tintz.co.nz>
References: <20050502023305.B26B937A01@mail.tintz.co.nz>
Message-ID: <200505020906.59002.modelnine@ceosg.de>

Am Montag, 2. Mai 2005 04:35 schrieb Thomas:
> I am getting socket error for large file transfer on windows (100MB+)

Get an operating system... :-)

No, seriously, I think that the problem might be that WinSock doesn't block 
the sending process while it can't send out the data. Thus: the internal 
send-buffer of WinSock overflows at some point when the receiver can't accept 
data as quickly as the sending process puts it in the queue and data starts 
to accumulate at the sending end.

You might try using select to make sure the socket is writable when sending 
data to it. select also works under Windows, but only on sockets.

This is all just an educated guess...

-- 
--- Heiko.
listening to: Rufus Wainwright - Hallelujah
  see you at: http://www.stud.mh-hannover.de/~hwundram/wordpress/
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From rkern at ucsd.edu  Tue May 24 23:45:02 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Tue, 24 May 2005 20:45:02 -0700
Subject: Counting occurences of words in a list of strings
In-Reply-To: <YxRke.10544$on1.9738@clgrps13>
References: <YxRke.10544$on1.9738@clgrps13>
Message-ID: <d70s8l$m2s$1@sea.gmane.org>

Travers Naran wrote:
> Here's the basic idea.  I have a dictionary of substrings (the substrings 
> stored as keys).  I have a list of strings.  I want to find out, for each 
> word in the dictionary, how many times the substring occurs non-overlapping 
> occurrences there are in the list of strings.  This is the best I could 
> come up with:
> 
>          for j in self.dict.keys():
>              c = 0
>              for i in tc.strings:
>                  c += i.count(j)
>              self.dict[j]['count'] += c
> 
> I tried Boyer-Moore-Horspool as someone else suggested in the group, but it 
> was even slower (probably because of the time spent setting up the 
> pattern).  Even when I split the algorithm in two, doing the set-up before 
> the inner loop and only testing the pattern in the inner loop, it was still 
> slow.
> 
> So, am I doing this the optimal way or am I overlooking something _really_ 
> simple to do?
> 
> Statistics on the data:
> The dictionary has 3000+ entries in it.
> There are several thousand strings.
> The strings average 10-26 characters in length.

Find a character that doesn't exist in any of self.dict.keys(). '\x00' 
will probably do.

whole = '\x00'.join(tc.strings)
for key in self.dict.keys():
     self.dict[key]['count'] = whole.count(key)

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From malkarouri at gmail.com  Sun May  1 21:46:11 2005
From: malkarouri at gmail.com (malkarouri at gmail.com)
Date: 1 May 2005 18:46:11 -0700
Subject: Tripoli: a Python-based triplespace implementation
References: <mailman.68.1114895199.14961.python-list@python.org>
Message-ID: <1114998371.511029.280230@o13g2000cwo.googlegroups.com>

Dominic Fox wrote:
> I have been working on a Python implementation of a modified Tuple
> Space (cf Linda, JavaSpaces) that contains only 3-tuples (triples),
> and that has operators for copying and moving graphs of triples as
> well as sets matching a given pattern. It's called Tripoli, ...

Interesting, but I wonder if you are aware of pylinda
(http://www-users.cs.york.ac.uk/~aw/pylinda/) and if so, what's the
difference?

Regards,

karouri



From steven.bethard at gmail.com  Mon May 16 00:49:45 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Sun, 15 May 2005 22:49:45 -0600
Subject: Exception question
In-Reply-To: <mailman.29.1116185180.15315.python-list@python.org>
References: <mailman.6.1116126375.15315.python-list@python.org>	<wcSdnXpkc7hRSRvfRVn-pg@comcast.com>
	<mailman.29.1116185180.15315.python-list@python.org>
Message-ID: <wcudndbhvPv7uxXfRVn-sw@comcast.com>

Ron Adam wrote:
> I had read somewhere that exception objects were global, but that wasn't 
> correct, after testing it, they appear to be part of the local frame. So 
> once a function exits, any exceptions objects that happened inside the 
> function are no longer retrievable.
> 
> And checking exception ID's to see if any new exceptions occurred 
> doesn't work either, as the numbers get reused too frequently in a short 
> period.

Also, in case you don't get notification of PEP checkins, you'll want to 
know that there's a new PEP about this:

PEP 344: Exception Chaining and Embedded Tracebacks [1]

STeVe

[1] http://www.python.org/peps/pep-0344.html


From jjl at pobox.com  Fri May 13 16:57:06 2005
From: jjl at pobox.com (John J. Lee)
Date: 13 May 2005 20:57:06 +0000
Subject: Python Documentation (should be better?)
References: <5C99C308457E6D4EA5448EA52A66004A675A6E@or.mxim.com>
	<17026.26789.592527.975821@montanaro.dyndns.org>
	<mailman.398.1115843305.29826.python-list@python.org>
Message-ID: <87zmuykfod.fsf@pobox.com>

Ivan Van Laningham <ivanlan at pauahtun.org> writes:

> Hi All--
> The Python docs are not ideal.  I can never remember, for instance,
> where to find string methods (not methods in the string module, but
> methods with ''), but I can remember a tortured path to get me there
[...]

The answer to 80% of "where is it" questions re the Python docs is
"Section 2 of the Library Reference".

The other 15% include __special__ methods (they're almost all in the
Language Reference), miscellaneous functions that aren't in the module
you might expect, and questions about language semantics (which can
sometimes be hard or impossible to answer by reading the docs,
because, when they're documented at all, they're sometimes in some
collection of PEPs, articles and mailing list posts).

The last 5% are PEBKAC.


John


From max at alcyone.com  Thu May  5 23:08:46 2005
From: max at alcyone.com (Erik Max Francis)
Date: Thu, 05 May 2005 20:08:46 -0700
Subject: How to detect a double's significant digits
In-Reply-To: <pan.2005.05.06.03.02.05.806769@jerf.org>
References: <1115314620.902071.323410@f14g2000cwb.googlegroups.com>
	<dOtee.706030$w62.64217@bgtnsc05-news.ops.worldnet.att.net>
	<pan.2005.05.05.20.32.38.680014@jerf.org>
	<117lmgrjssnlf04@corp.supernews.com>
	<pan.2005.05.06.03.02.05.806769@jerf.org>
Message-ID: <mKmdndA5g-xYQuffRVn-rA@speakeasy.net>

Jeremy Bowers wrote:

> Not necessarily; consider the str() of a float in Python, especially given
> the "significant digits" aspect (it may be ill-defined, but I can think of
> several well-defined ways to mean that, where str() embodies one of them).
> The easiest way to tell how long the number will be when str prints it out
> is to simply ask it.

Grant's point was that as significance is used in scientific studies, 
there's no way to answer the question without having the number in 
advance.  If I say that the length of something is 1100 m, you don't 
know whether I mean 1.1 x 10^3 m, 1.10 x 10^3 m, 1.100 x 10^3 m, etc. 
These all have different significances.  The figure 1100 m can't tell 
you how many significance figures are involved without further information.

In particular, the example he gave involved changing significance 
depending on the number of zeroes _before_ the other digits, not after 
them, which is now how significance works.  So obviously when he says 
"significant digits" he doesn't mean the same thing that's used by 
scientists, so the question can't really be answered.

If he simply wanted to get the number of digits involved, then that's 
fine, but that's not what significance is.

-- 
Erik Max Francis && max at alcyone.com && http://www.alcyone.com/max/
San Jose, CA, USA && 37 20 N 121 53 W && AIM erikmaxfrancis
   Eternity is very long, especially near the end.
   -- Woody Allen


From Ronald700125 at yahoo.com  Fri May  6 14:20:15 2005
From: Ronald700125 at yahoo.com (Ronald700125 at yahoo.com)
Date: 6 May 2005 11:20:15 -0700
Subject: =?iso-8859-1?q?Good_morning_or_good_evening_depending_upon_your_location._I_want_to_ask_you_the_most_important_question_of_your_life._Your_joy_or_sorrow_for_all_eternity_depends_upon_your_answer._The_question_is:_Are_you_saved=3F_It_is_not_a_question_of_how_good_you_are,
	_nor_if_you_are_a_church_member,
	_but_are_you_saved=3F_Are_you_sure_you_will_go_to_Heaven_when_you_die=3F_GOOGLE=B7NEWSGROUP=B7POST=B7156?=
Message-ID: <1115403614.884980.203510@f14g2000cwb.googlegroups.com>


This is the most important question of your life.

The question is: Are you saved?

It is not a question of how good you are,
nor if you are a church member, but are you saved?

Are you sure you will go to Heaven when you die?

The reason some people don't know for sure if they
are going to Heaven when they die is because they
just don't know.

The good news is that you can know for sure that
you are going to Heaven.

The Holy Bible describes Heaven as a beautiful
place with no death, sorrow, sickness or pain.

God tells us in the Holy Bible how simple it is
to be saved so that we can live forever with Him
in Heaven.

"For if you confess with your mouth Jesus is Lord
and believe in your heart that God raised Him from
the dead, you WILL BE SAVED." (Romans 10:9)

Over 2000 years ago God came from Heaven to earth
in the person of Jesus Christ to shed His blood
and die on a cross to pay our sin debt in full.

Jesus Christ was born in Israel supernaturally to
a virgin Jewish woman named Mary and lived a sinless
life for thirty-three years.

At the age of thirty-three Jesus was scourged and
had a crown of thorns pressed onto His head then
Jesus was crucified.

Three days after Jesus died on a cross and was
placed in a grave Jesus rose from the dead as Jesus
said would happen before Jesus died.

If someone tells you that they are going to die and
then three days later come back to life and it
actually happens then this person must be the
real deal.

Jesus Christ is the only person that ever lived a
perfect sinless life.

This is why Jesus is able to cover our sins(misdeeds)
with His own blood because Jesus is sinless.

The Holy Bible says, "In Him(Jesus) we have
redemption through His blood, the forgiveness of
sins..." (Ephesians 1:7)

If you would like God to forgive you of your past,
present and future sins just ask Jesus Christ to be
your Lord and Saviour.

It doesn't matter how old you are or how many bad
things that you have done in your life including
lying and stealing all the way up to murder.

Just pray the prayer below with your mouth and mean
it from your heart and God will hear you and save you.

Dear Jesus Christ, I want to be saved so that I can
have a home in Heaven with You when I die. I agree
with You that I am a sinner. I believe that You love
me and want to save me. I believe that You bled and
died on the cross to pay the penalty for my sins and
that You rose from the dead. Please forgive my sins
and come into my heart and be my Lord and Saviour.
Thanks Lord Jesus Christ for forgiving me and saving
me through Your merciful grace. Amen.

Welcome to the family of God if you just allowed God
to save you.

Now you are a real Christian and you can know for
sure that you will live in Heaven forever when this
life comes to an end.

As a child of God we are to avoid sin(wrongdoing),
but if you do sin the Holy Bible says, "My dear
children, I write this to you so that you will not
sin. But if anybody does sin, we have one who speaks
to the Father in our defense Jesus Christ,
the Righteous One."

Those of you that have not yet decided to place your
trust in the Lord Jesus Christ may never get another
chance to do so because you do not know when you
will die.

Jesus said, "I am the way, the truth and the life:
no one can come to the Father(God)(in Heaven), but
by me." (John 14:6)

This means that if you die without trusting in Jesus
Christ as your Lord and Saviour you will die in your
sins and be forever separated from the love of God in
a place called Hell.

The Holy Bible descibes Hell as a place of eternal
torment, suffering, pain and agony for all those who
have rejected Jesus Christ.

The good news is that you can avoid Hell by allowing
Jesus Christ to save you today. Only then will you
have true peace in your life knowing that no matter
what happens you are on your way to Heaven.


Praise the Lord!
Servant of the Lord Jesus Christ
Ronald L. Grossi


* Show this to your family and friends so they can also be saved.

* This message may get deleted so you may want to print a copy.

* Just press the [Ctrl][P] keys on your keyboard to print this page.



`???...???`???...???`???.?..???`???...???`???..???`


Got Questions?
http://www.gotquestions.org/archive.html

Other Languages
http://www.godssimpleplan.org/gsps.html

Free Movie: To Hell and Back
http://www.tbn.org/index.php/8/1.html

Animation
http://www.gieson.com/Library/projects/animations/walk/index.html

The Passion Of The Christ
http://www.thepassionofthechrist.com

Beware Of Cults
http://www.carm.org/cults/cultlist.htm

About Hell
http://www.equip.org/free/DH198.htm

Is Jesus God?
http://www.powertochange.com/questions/qna2.html

Free Online Bible
http://www.biblegateway.com


`???...???`???...???`???.?..???`???...???`???..???`



From francescomoi at europe.com  Fri May 13 09:25:48 2005
From: francescomoi at europe.com (francescomoi at europe.com)
Date: 13 May 2005 06:25:48 -0700
Subject: MySQL: 'latin-1' codec can't encode character
Message-ID: <1115990748.006171.96240@g49g2000cwa.googlegroups.com>

Hi.

I'm trying to store a text within a MySQL field (v 3.23.58) by using
MySQLdb
(v 1.2.1c3).

The text is: "telephone..." (note the last character)

And I get this error message:
-----------
File "/usr/lib/python2.3/site-packages/MySQLdb/connections.py", line
33, in defaulterrorhandler
    raise errorclass, errorvalue
UnicodeEncodeError: 'latin-1' codec can't encode character u'\u2026' in
position 288: ordinal not in range(256)
-----------------------

Position 288 is the character I've mentioned. I suppose I must encode
this caracter
into a right one which MySQL could store, but I have no idea about how
to perform
it. Any suggestion?

Thank you very much.



From robin at reportlab.com  Mon May 23 14:17:49 2005
From: robin at reportlab.com (Robin Becker)
Date: Mon, 23 May 2005 19:17:49 +0100
Subject: python24.zip
In-Reply-To: <42921399.2050302@v.loewis.de>
References: <mailman.249.1116595092.8733.python-list@python.org>	<428e0cc3$0$29954$9b622d9e@news.freenet.de>	<x7hdgw2zqi.fsf@handshake.de>	<428faddd$0$26322$9b622d9e@news.freenet.de>	<x7vf5bku5d.fsf@handshake.de>	<4290dc79$0$9989$9b622d9e@news.freenet.de>	<4291ea5b$1@nntp0.pdx.net>
	<42921399.2050302@v.loewis.de>
Message-ID: <42921E4D.4050105@chamonix.reportlab.co.uk>

Martin v. L?wis wrote:
....
> 
> 
> Now I remember what makes this stuff really difficult: PEP 302
> introduces path hooks (sys.path_hooks), allowing imports from
> other sources than files. So the items on sys.path don't have
> to be directory or file names at all, and importing from them
> may still succeed if though stat fails.
.... so is there implication of multiplicative behaviour?

ie if we have N importers and F leading failure syspath entries before the 
correct one is found do we get order N*F failed stats/opens etc etc?

-- 
Robin Becker



From nszabolcs at gmail.com  Fri May 27 08:57:46 2005
From: nszabolcs at gmail.com (Szabolcs Nagy)
Date: 27 May 2005 05:57:46 -0700
Subject: Case Sensitive, Multiline Comments
References: <1117137316.140791.210430@g14g2000cwa.googlegroups.com>
	<8664x5y92g.fsf@guru.mired.org> <429654DA.9050903@lexicon.net>
	<1117154013.092736.298310@g14g2000cwa.googlegroups.com>
Message-ID: <1117198666.895682.215850@z14g2000cwz.googlegroups.com>

i found case sensitivity very useful

1. variables can be stored in a dict (think about  __dict__, globals())
and dict type should be case sensitive

2. It's necessary when i write short scripts and i use one letter
names. (eg. when i playing with linear algebra i always use a,b,c for
vectors and A,B,C for matrices).  I dont want to think about "more than
one letter" names when i run that script only once. And usually this is
the case with python (at least when i use it in interpreted mode).

3.  i write sometimes:
class Foo:
    ...
foo = Foo()

and i think it's readable and makes sense.

4. actually i never wanted to use 'foo', 'Foo' and 'FOO' for the same
variable and i can't imagine a situation when it's useful. it makes the
code less readable so i think the language should force the programmer
not to use different names for the same variable.

nsz



From AOLfan250106 at yahoo.com  Sat May 21 14:00:06 2005
From: AOLfan250106 at yahoo.com (AOLfan250106 at yahoo.com)
Date: 21 May 2005 11:00:06 -0700
Subject: http://www.tbn.org/films/videos/To_Hell_And_Back.ram << GREAT VIDEO!
	Just click on link to view.
Message-ID: <1116698406.435130.106180@g47g2000cwa.googlegroups.com>

http://www.tbn.org/films/videos/To_Hell_And_Back.ram << GREAT VIDEO!
Just click on link to view.



From cfajohnson at gmail.com  Sun May 29 04:09:44 2005
From: cfajohnson at gmail.com (Chris F.A. Johnson)
Date: Sun, 29 May 2005 04:09:44 -0400
Subject: need help of RE
References: <1117352350.179209.206930@z14g2000cwz.googlegroups.com>
Message-ID: <8v9om2-5fl.ln1@rogers.com>

On Sun, 29 May 2005 at 07:39 GMT, cheng wrote:
> hi all
> a string like
> 
> "(word1 & (Word2|woRd3))"
> 
> how can i use the re to split it to
> 
> ['word1', 'word2', 'word3']

    This splits the string on one or more occurrences of any character
    that is not alphanumeric: 

import re
str = "(word1 & (Word2|woRd3))"
s = re.sub("[^a-zA-Z0-9]+"," ",str).split()

-- 
    Chris F.A. Johnson                     <http://cfaj.freeshell.org>
    ==================================================================
    Shell Scripting Recipes: A Problem-Solution Approach, 2005, Apress
    <http://www.torfree.net/~chris/books/cfaj/ssr.html>


From eurleif at ecritters.biz  Wed May  4 16:33:31 2005
From: eurleif at ecritters.biz (Leif K-Brooks)
Date: Wed, 04 May 2005 20:33:31 GMT
Subject: empty lists vs empty generators
In-Reply-To: <pan.2005.05.04.18.29.22.758200@jerf.org>
References: <509534af.0505021514.5e49aa2@posting.google.com>
	<pan.2005.05.03.01.32.03.187701@jerf.org>
	<wl4ee.2865$Cz3.445354@monger.newsread.com>
	<pan.2005.05.04.18.29.22.758200@jerf.org>
Message-ID: <vkaee.3459$5I5.389496@newshog.newsread.com>

Jeremy Bowers wrote:
> On Wed, 04 May 2005 13:45:00 +0000, Leif K-Brooks wrote:
> 
> 
>>Jeremy Bowers wrote:
>>
>>>    def __init__(self, generator):
>>>        self.generator = generator
>>
>>You'll want to use iter(generator) there in order to handle reiterables.
> 
> 
> Can you expand that explanation a bit? I'm not certain what you mean. I'm
> just trusting what the user passes in; maybe the user should pass it
> iter(generator) when it's a "reiterable"? (Honest question.) 
> 
> What definition of "re-iterable" are you using? (A quick google for
> "Python reiterabile" just turns up some Python dev list entries from 2003.)

Reiterable is generally defined as an object which can be iterated over 
multiple times (i.e. is iterable but isn't an iterator). The simplest 
example is a list, but a few other built-in types (set and dict, for 
instance) also qualify.

With the EmptyGeneratorDetector class as you defined it, lists will fail:

 >>> EmptyGeneratorDetector([])
Traceback (most recent call last):
   File "<stdin>", line 1, in ?
   File "<stdin>", line 15, in __init__
AttributeError: 'list' object has no attribute 'next'

Of course, the class is labeled as an empty generator detector, not an 
empty iterable detector, so it's doing what it says it will, but a 
little bit of extra generalism can't hurt.


From hanwen at byrd.xs4all.nl  Sun May 15 20:10:10 2005
From: hanwen at byrd.xs4all.nl (Han-Wen Nienhuys)
Date: 16 May 2005 00:10:10 GMT
Subject: MacOS X drag & drop?  
Message-ID: <4287e4e2$0$64529$e4fe514c@news.xs4all.nl>


Hi there,

this might not be the right group to ask, but I'm looking for some
hints on making a drag & droppable application on MacOS X.  I
succeeded in producing a bundle that calls a python script. 
When I drop a file onto the application, the python script is called
with the following arguments,

  ['/Users/hanwen/src/maclily/BUILD/lilypond.app/Contents/MacOS/lilypond',
   '-psn_0_3145729']

how can I find the path to the dropped file from -psn_0_3145729 ? Or
is this signaled to the script through a different channel?


Thanks!

-- 
 Han-Wen Nienhuys - hanwen at xs4all.nl - http://www.xs4all.nl/~hanwen


From tjreedy at udel.edu  Wed May 25 15:02:06 2005
From: tjreedy at udel.edu (Terry Reedy)
Date: Wed, 25 May 2005 15:02:06 -0400
Subject: namespaces in eval(): spot error in 3 line program
References: <1117035976.997084.305310@g47g2000cwa.googlegroups.com>
Message-ID: <d72hvu$sh3$1@sea.gmane.org>


"pasa" <harri.pasanen at trema.com> wrote in message

> Do functions carry their own pointer to global namespace,
> which gets defined at function compile time, or what is
> happening here?

To expand on Just's answer:

For lexical scoping --  resolution of globals in the definition context --  
some reference to that context is required.  The alternative of dynamic 
scoping -- resolution of globals in the calling context -- has been tried 
in other languages and found wanting.  For instance, if you call a function 
in the math module that uses pi, sin, or cos, one almost certainly wants it 
to use the object defined and bound to pi, sin, or cos in the math module. 
That happens automatically with lexical scoping.  With dynamic scoping, one 
would have to do 'from math import *' first.  And so on for everything 
else.

Terry J. Reedy





From theoryboy at my-deja.com  Wed May 18 07:40:47 2005
From: theoryboy at my-deja.com (theoryboy at my-deja.com)
Date: 18 May 2005 04:40:47 -0700
Subject: Multiple selections in Tix Hlist
Message-ID: <1116416447.877154.160280@g47g2000cwa.googlegroups.com>

I'm trying to implement multiple selection functionality in a Tix Hlist
using a control-click. I've bound control-click to a function that uses
selection_set to add to the selection, but it doesn't seem to work.
Only the last clicked item appears selected (highlighted) in the
display and the return from info_selection only ever contains the last
2 items, rather than all the items I have control-clicked.

It's odd, because if I set up the list and then set up a breakpoint, I
can set multiple selections at the debug command line and it works as I
would expect.

My other problem is that there is no "selection_unset()" method, for
using a control click to individually unselect one item from the list.
There is only selection_clear(), which clears all selections. Am I
missing something?

Below is some sample code:

#!/usr/bin/python

from Tix import *

class ControlClickTest:

	def __init__(self, master):
		root = master
		modalPane = Toplevel(root)
		self.listBox = HList(modalPane)
		self.listBox.pack()
		items = ['1','2','4','6','8']
		for item in items:
			self.listBox.add(item, itemtype=TEXT, text=item)
		self.listBox.bind('<Control-Button-1>', self.ctrlClick)
		root.wait_window(modalPane)

	def ctrlClick(self, event):
		print "control click!"
		index = self.listBox.nearest(event.y)
		self.listBox.selection_set(index)
		print self.listBox.info_selection()

if __name__ == "__main__":
	ControlClickTest(Tk())


Any ideas?

Peter



From robin at reportlab.com  Mon May 23 11:04:14 2005
From: robin at reportlab.com (Robin Becker)
Date: Mon, 23 May 2005 16:04:14 +0100
Subject: detached subprocess
In-Reply-To: <4291EE29.4000508@chamonix.reportlab.co.uk>
References: <4291EE29.4000508@chamonix.reportlab.co.uk>
Message-ID: <4291F0EE.4020304@chamonix.reportlab.co.uk>

Robin Becker wrote:
.....
> before the child ends its sleep. Of course it may be that it's just the handles 
> that are being held.

After further tests with procexp it seems that the parent is allowed to die, but 
its output is held up (perhaps apache is waiting on an eof) until the child dies.

It would seem prudent to allow the mswindows version to control the 
bInheritHandles flag in some way.
-- 
Robin Becker



From jeffelkins at earthlink.net  Wed May 11 08:11:23 2005
From: jeffelkins at earthlink.net (jeff elkins)
Date: Wed, 11 May 2005 12:11:23 +0000
Subject: Finding startup files
Message-ID: <200505111211.23770.jeffelkins@earthlink.net>


I'm creating an app that relies on a configuration file at launch. The file 
will always exist in the app's installation directory, but I have no control 
over where that might be. 

Is there an OS-independent way that I can instruct the app to look in it's 
home directory for startup files? Right now, I'm hard coding the path, which 
won't work. 

Thanks,

Jeff


From andreif at mail.dntis.ro  Mon May 30 11:16:42 2005
From: andreif at mail.dntis.ro (Stormbringer)
Date: 30 May 2005 08:16:42 -0700
Subject: Python crash
Message-ID: <1117466202.544035.258490@f14g2000cwb.googlegroups.com>

I am using latest python 2.4 under Windows.

I have a file where I have a bunch of functions, but none with a
special name and nothing outside the functions, no import etc

In the main module all works fine if I don't import that file.
The moment I import it nothing happens but I get a crash later on when
I call a pyopengl function. If I comment just the 'import ...' line
then all works ok.

The crash occurs in pythonw.exe and can't follow further as pythonw
doesn't seem to contain any debug information.

Obviously something must be wrong with my pyopengl but I don't
understand why including a module generates the crash later on. Anyone
got something similar ? Any hints/tips/tricks on finding the cause of
the problem ?



From tim.golden at viacom-outdoor.co.uk  Wed May 11 03:47:50 2005
From: tim.golden at viacom-outdoor.co.uk (Tim Golden)
Date: Wed, 11 May 2005 08:47:50 +0100
Subject: windows directories for curr user
Message-ID: <9A28C052FF32734DACB0A288A3533991EBB7FB@vogbs009.gb.vo.local>

[Dan Bishop]
| flamesrock wrote:
| > Hi,
| >
| > Short, maybe newbish question: Is there a python method for finding
| out
| > who the current user is in the OS module?
| >
| > On older windows machines the directory I'm interested in is just
| > "c://my documents", but how do I walk to the current users my
| documents
| > folder?
| 
| path = '%s\\My Documents' % os.environ['USERPROFILE']

Or, rather more generally:

<code>

from win32com.shell import shell, shellcon
import win32api
  
#
# Don't need this to find the right folder,
#  but since you asked...
#
print win32api.GetUserName ()

#
# This is the "personal files" which usually corresponds
#  to the "My Documents" folder, but in my case points to
#  h:\ since that's my home folder in my AD profile.
#
print shell.SHGetPathFromIDList (
  shell.SHGetSpecialFolderLocation (0, shellcon.CSIDL_PERSONAL)
)

#
# To see a list of possible CSIDL values:
#
for i in dir (shellcon):
  if i.startswith ("CSIDL"):
    print i

</code>


________________________________________________________________________
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From zunbeltz at gmail.com  Mon May 30 11:30:09 2005
From: zunbeltz at gmail.com (Zunbeltz Izaola)
Date: Mon, 30 May 2005 17:30:09 +0200
Subject: avl tree
Message-ID: <pan.2005.05.30.15.30.09.93892@gmail.com>

Hi,

I'm trying to install avl module from
http://www.nightmare.com/squirl/python-ext/avl

and i had the following instruction to install

Building:

Unix:
First, cd $(AVL_LIB), then 'make libavl.a'

Then copy AVLmodule.c into your Modules directory.
add a few lines like this to your Python/Modules/Setup file.
---------------------------------------------------------------------------
# avl module
AVL_LIB=/usr/src/other-homes/rushing/python/avl
avl AVLmodule.o -DDEBUG_AVL -I$(AVL_LIB) -L$(AVL_LIB) -lavl
-------------------------------------------------------------

I have build livavl.a, but i don't understan where is Python/Modules/Setup
and where goes the AVLModule.c file goes.


Could anyone help me,

Thanks,

Zunbeltz


From lbates at syscononline.com  Tue May 17 18:05:51 2005
From: lbates at syscononline.com (Larry Bates)
Date: Tue, 17 May 2005 17:05:51 -0500
Subject: command to update a web page
In-Reply-To: <1116364404.542712.273200@g44g2000cwa.googlegroups.com>
References: <1116364404.542712.273200@g44g2000cwa.googlegroups.com>
Message-ID: <428A6ABF.4070900@syscononline.com>

You probably just want to use ftplib to upload the new
page to the website.  You will, of course, need to create
the new page from the information provided by whatever
condition triggered it prior to uploading to the server.

Alternatively you could update some information in a
MySQL database and have your php web page access that
information every time it refreshes.  The database
would need to be hosted at the website (but most ISPs
now give you free MySQL anyway).

Sort of depends on how often this happens, how complex
the php page is, etc. as to which is best method.

Larry Bates


atabhcy at yahoo.com wrote:
> Hello All,
> I have a python script which sends out email once a particular
> condition is met. Now I want to extend the functionality and make this
> script update a php web page with the same contents as those of the
> emails it sends out.
> What module /commands can help me acheive this?
> Thanks.
> 


From eurleif at ecritters.biz  Sat May  7 11:20:53 2005
From: eurleif at ecritters.biz (Leif K-Brooks)
Date: Sat, 07 May 2005 15:20:53 GMT
Subject: globbing multiple wildcards
In-Reply-To: <1115477662.937084.260270@g14g2000cwa.googlegroups.com>
References: <1115477662.937084.260270@g14g2000cwa.googlegroups.com>
Message-ID: <p15fe.4173$5I5.437956@newshog.newsread.com>

utabintarbo at gmail.com wrote:
> I have a path spec similar to '/home/*/.mozilla/*/*/cache*/*' (this
> will probably look familiar to *nix users) with multiple wildcards. I
> am finding it difficult gathering ALL file pathnames which match this
> spec. Can anyone shed some light on this for a python noob?

import glob
glob.glob('/home/*/.mozilla/*/*/cache*/*')


From peter at engcorp.com  Tue May  3 17:18:20 2005
From: peter at engcorp.com (Peter Hansen)
Date: Tue, 03 May 2005 17:18:20 -0400
Subject: text strings to binary...
In-Reply-To: <1115149191.862429.51610@g14g2000cwa.googlegroups.com>
References: <1115149191.862429.51610@g14g2000cwa.googlegroups.com>
Message-ID: <qe6dnS7MStnrd-rfRVn-oA@powergate.ca>

oriana.falco at thalesesec.com wrote:
> Hi,
> 
> I've been working with Python for a bit now but I just came accross a
> problem and I'm not sure how to approach it. I'd like to convert a text
> string into binary data format. I though I'd use the struct module and
> the pack function but I can't get it to work. I'm using Python 2.3.3 in
> Windows XP.

Examples of what you have as input and expect as output would be useful. 
  Keep in mind that the term "binary data" is quite ambiguous.  Python 
"text strings", for example, are already stored as "binary data" 
according to my definitions of both things... you will need to explain 
what you are trying to accomplish in more words than that.

(Hint: if this is for sending data across a network, note that in Python 
  "strings" can contain any bytes from 0 to 255, so perhaps they are 
already in the "binary" form that you need.)

-Peter


From timothy at open-networks.net  Tue May 17 07:19:29 2005
From: timothy at open-networks.net (Timothy Smith)
Date: Tue, 17 May 2005 21:19:29 +1000
Subject: Windows distribution suggestions?
In-Reply-To: <d6cj3e$19r$1@bagan.srce.hr>
References: <7x3bsmfjdg.fsf_-_@ruckus.brouhaha.com>	<7xekc6p9tp.fsf@ruckus.brouhaha.com>	<4289ACD8.2070207@open-networks.net>	<mailman.87.1116322349.8733.python-list@python.org>	<7x8y2ep1cw.fsf@ruckus.brouhaha.com>
	<d6cj3e$19r$1@bagan.srce.hr>
Message-ID: <4289D341.9020908@open-networks.net>

Ivan Voras wrote:

>Paul Rubin wrote:
>
>  
>
>>>your active code is then in some library.zip shared between the
>>>three, and you need never change alice.exe, bob.exe, and carol.exe
>>>      
>>>
>>I think I understand what you're saying and it sounds like a very
>>good idea.  Thanks.
>>    
>>
>
>One thing about updating files - sorry if I'm stating general and 
>universal knowledge, but beware that on Windows you can't delete and/or 
>replace a file if it's opened by any process.
>  
>
hence i found you must do this immediately after updating

sys.path_importer_cache.clear()
zipimport._zip_directory_cache.clear()

then unload your app



From bingham at cenix-bioscience.com  Fri May 27 02:41:14 2005
From: bingham at cenix-bioscience.com (Aaron Bingham)
Date: Fri, 27 May 2005 08:41:14 +0200
Subject: Access from one class to methode of other class
In-Reply-To: <fesb91tvpjs5kl4dm02k8puu08ln35gtfl@4ax.com> (Dennis Lee Bieber's
	message of "Thu, 26 May 2005 16:06:28 GMT")
References: <3flu22F8g4u4U1@news.dfncis.de>
	<fesb91tvpjs5kl4dm02k8puu08ln35gtfl@4ax.com>
Message-ID: <l8d5rdb27p.fsf@lynx.cenix-bioscience.com>

Dennis Lee Bieber <wlfraed at ix.netcom.com> writes:

> On Thu, 26 May 2005 14:33:45 +0200, VK <"myname"@example.invalid>
> declaimed the following in comp.lang.python:
>
>> Hi, all!
>> 
>> In my programm i have to insert a variable from class 2 to class 1 and I 
>> get error NameError: global name 'd' is not defined. How do I get access 
>> to d.entry.insert() method of class 1
>> 
>> class 1:
> 	<shudder> Does Python even allow numeric class names?

Fortunately, no:

>>> class 1:
  File "<stdin>", line 1
    class 1:
          ^
SyntaxError: invalid syntax

-- 
--------------------------------------------------------------------
Aaron Bingham
Software Engineer
Cenix BioScience GmbH
--------------------------------------------------------------------



From Scott.Daniels at Acm.Org  Mon May 23 11:14:44 2005
From: Scott.Daniels at Acm.Org (Scott David Daniels)
Date: Mon, 23 May 2005 08:14:44 -0700
Subject: SQL Query via python
In-Reply-To: <mailman.2.1116779535.21604.python-list@python.org>
References: <200505202357.01579.jeffelkins@earthlink.net>
	<mailman.2.1116779535.21604.python-list@python.org>
Message-ID: <4291ecd1$1@nntp0.pdx.net>

Steve Holden wrote:
> Jeff Elkins wrote:
>>...     cursor.execute("SELECT name, month, day ,category, city "
>>                       " FROM bday WHERE %s = %s", (arg1,arg2))
>> No results. However, if I hardcode the WHERE argument with a field name:
>>        cursor.execute("SELECT name, month, day ,category, city "
>>                       " FROM bday WHERE month = %s", (arg2,))
>> Works.
>>
> Because here you aren't trying to parameterize the name of a database 
> object.
> 
>> How can I code the left side of the WHERE clause so I can pass an 
>> arbitrary field name to search on?
>>
>>
> You might have to construct the SQL statement to include the names of 
> tables and columns. It's still better to use parameterization for data 
> substitutions, though, because then you don't have to perform any quoting.

I'm sure Steve knows this, but for those wondering:
     A database system will often produce an optimized execution plan
     from the first argument (and cache that plan).  The string had
     better be good enough for the DBMS to determine how to best perform
     the query.  This means only data can be parameterized, not table or
     field names).  The query plan includes things like which indexes to
     use and what tables to access in what order.

--Scott David Daniels
Scott.Daniels at Acm.Org


From sjmachin at lexicon.net  Sat May 14 08:58:21 2005
From: sjmachin at lexicon.net (John Machin)
Date: Sat, 14 May 2005 22:58:21 +1000
Subject: problem uploading ZIP file tp PyPI
Message-ID: <spsb81hia4m5n136tp0sgpuldd0gon555m@4ax.com>


Sorry in advance if this is not the correct forum ...

I'm trying to upload what appears to be a perfectly OK zip file as a
"source" file type to PyPI, and am getting this response:

Error...
There's been a problem with your request
exceptions.ValueError: invalid distribution file

I have managed to upload a Windows installer, and downloaded it again
[but the download count is still stuck on zero].

Any clues?



From tlviewerSHRUB at yahooCHENEY.com  Fri May  6 17:27:30 2005
From: tlviewerSHRUB at yahooCHENEY.com (tlviewer)
Date: Fri, 06 May 2005 21:27:30 GMT
Subject: win32: structured storage
References: <HxBee.23620$R46.6537@tornado.socal.rr.com>
	<mailman.94.1115380268.29826.python-list@python.org>
Message-ID: <6jRee.23777$R46.7719@tornado.socal.rr.com>


"Robert Kern" <rkern at ucsd.edu> wrote in message news:mailman.94.1115380268.29826.python-list at python.org...
> tlviewer wrote:
> 
> > Is there another way to parse the central directory out of
> > a CHM file?
> 
> google("chmlib python")

Anyone know the calling syntax for the functions?

PythonWin 2.3.2 (#49, Nov 13 2003, 10:34:54) [MSC v.1200 32 bit (Intel)] on win32.
Portions Copyright 1994-2001 Mark Hammond 
(mhammond at skippinet.com.au) - see 'Help/About PythonWin' for further copyright information.
>>> import os, sys
>>> import pychm._chmlib as chm
>>> obj=chm.chm_open('e:/batch/AdvCrypto')
>>> obj
>>> chm.chm_open('e:/batch/AdvCrypto')
>>> chm
<module 'pychm._chmlib' from 'E:\Python23\Lib\site-packages\pychm\_chmlib.pyd'>
>>> enm=chm.chm_enumerate()
Traceback (most recent call last):
  File "<interactive input>", line 1, in ?
TypeError: chm_enumerate() takes exactly 4 arguments (0 given)
>>> chm.chm_enumerate(obj)

I doubt if the build is good ...

regards,
tlviewer



From rogerb at rogerbinns.com  Wed May 11 01:45:01 2005
From: rogerb at rogerbinns.com (Roger Binns)
Date: Tue, 10 May 2005 22:45:01 -0700
Subject: pyvm -- faster python
References: <mailman.164.1115548611.29826.python-list@python.org>
	<1115561483.741761.212140@f14g2000cwb.googlegroups.com>
	<m102l2-9qr.ln1@home.rogerbinns.com>
	<mailman.264.1115716603.29826.python-list@python.org>
	<vu38l2-k5v.ln1@home.rogerbinns.com>
	<7xvf5qbir1.fsf@ruckus.brouhaha.com>
	<nt98l2-1e.ln1@home.rogerbinns.com>
	<7xpsvymlse.fsf@ruckus.brouhaha.com>
Message-ID: <b0j8l2-ip1.ln1@home.rogerbinns.com>


"Paul Rubin" <http://phr.cx at NOSPAM.invalid> wrote in message news:7xpsvymlse.fsf at ruckus.brouhaha.com...
> "Roger Binns" <rogerb at rogerbinns.com> writes:
> What kind of stuff is in the existing Python C library that couldn't
> be reimplemented or retargeted pretty easily?  Most of it is either
> wrappers for standard C functions (system calls), stuff that shouldn't
> be in C in the first place (the Python compiler and interpreter), etc.

Some examples are gui toolkits (eg wxPython), SSL (eg M2Crypto, pyopenssl)
and database (pysqlite, APSW).  These aren't in the shipped with Python
library but are widely used.

> I hope that PyPy will replace CPython once it's solid enough.  Trying
> to stay backwards compatible with the legacy C API doesn't seem to me
> to be that important a goal.  Redoing the library may take more work
> than the Prothon guy was willing to do for Prothon, but PyPy has more
> community interest and maybe can attract more resources.

You don't have to stay backwards compatible.  It is best to provide
some sort of way of using the old extensions even if it is suboptimal
(eg some sort of mapping shim).  The extensions can later be improved,
but if there is no simple way of recompiling and running then it will
take a long time for all the extensions to get ported.

I already get burnt out on the matrix of CPython versions and different
platforms.  Adding another interpretter would make life even harder
for extension authors.

Roger 




From jeffelkins at earthlink.net  Sat May 21 15:00:06 2005
From: jeffelkins at earthlink.net (Jeff Elkins)
Date: Sat, 21 May 2005 15:00:06 -0400
Subject: SQL Query via python
In-Reply-To: <voqu81dankoi6ds7vm4n0e1h9c43s004mo@4ax.com>
References: <mailman.278.1116647826.8733.python-list@python.org>
	<voqu81dankoi6ds7vm4n0e1h9c43s004mo@4ax.com>
Message-ID: <200505211500.06747.jeffelkins@earthlink.net>

On Saturday 21 May 2005 01:32 pm, Dennis Lee Bieber wrote:
> On Fri, 20 May 2005 23:57:01 -0400, Jeff Elkins

>  You have to remember that .execute(), using the (template,
> (arg...)) format, is designed to apply suitable quoting to the
> arguments. It does not parse the SQL to determine if arguments are being
> used as identifiers and not data values.
>
>  The above sample probably generated:
>
> SELECT name, month, day, category, city from bday
> WHERE "month" = 5

This is getting much clearer. Thanks much.

Jeff


From flupke at nonexistingdomain.com  Thu May 26 08:43:00 2005
From: flupke at nonexistingdomain.com (flupke)
Date: Thu, 26 May 2005 12:43:00 GMT
Subject: Checking for a full house
In-Reply-To: <1117099951.524496.232130@f14g2000cwb.googlegroups.com>
References: <1117071824.882035.250710@g49g2000cwa.googlegroups.com>
	<1117085950.739186.14240@z14g2000cwz.googlegroups.com>
	<1117086974.854184.5930@g43g2000cwa.googlegroups.com>
	<7x8y22v76i.fsf@ruckus.brouhaha.com>
	<5Cele.101369$Sd5.6145133@phobos.telenet-ops.be>
	<1117099951.524496.232130@f14g2000cwb.googlegroups.com>
Message-ID: <ovjle.101587$D24.5938321@phobos.telenet-ops.be>

Raymond Hettinger wrote:
> [Benedict]
> 
>>>It would be interesting to see how complicated it would get to write
>>>code to detect the correct hands in poker with wildcards included.
> 
> 
> There is an interesting SF project with code written in C:
>     http://pokersource.sourceforge.net/
> 
> In contrast, Python makes short work of these kind of problems.  Here
> are some primitives to get you started (just add a representation for
> suits, flush detection, and controlling logic for ranking hands):
> 
> def is_straight(hand, numwildcards=0):
>     """Checks for a five card straight
> 
>     Inputs: list of non-wildcards plus wildcard count
>         2,3,4, ... 10, 11 for Jack, 12 for Queen,
>         13 for King, 14 for Ace
>         Hand can be any length (i.e. it works for seven card games).
> 
>     Outputs:  highest card in a five card straight
>               or 0 if not a straight.
>         Original list is not mutated.
>         Ace can also be a low card (i.e. A2345).
> 
>     >>> is_straight([14,2,3,4,5])
>     5
>     >>> is_straight([14,2,3,4,6])
>     0
>     >>> is_straight([10,11,12,13,14])
>     14
>     >>> is_straight([2,3,5], 2)
>     6
>     >>> is_straight([], 5)
>     14
>     >>> is_straight([2,4,6,8,10], 3)
>     12
>     >>> is_straight([2,4,4,5,5], 2)
>     6
>     """
> 
>     hand = set(hand)
>     if 14 in hand:
>         hand.add(1)
>     for low in (10,9,8,7,6,5,4,3,2,1):
>         needed = set(range(low, low+5))
>         if len(needed & hand) + numwildcards >= 5:
>             return low+4
>     return 0
> 
> 
> 
> def groups(hand, numwildcards=0):
>     """Checks for pairs, threes-of-kind, fours-of-a-kind,
>        and fives-of-a-kind
> 
>     Inputs: list of non-wildcards plus wildcard count
>         2,3,4, ... 10, 11 for Jack, 12 for Queen,
>         13 for King, 14 for Ace
>         Hand can be any length (i.e. it works for seven card games)
>     Output: tuple with counts for each value (high cards first)
>         for example (3, 14), (2, 11)  full-house Aces over Jacks
>         for example (2, 9), (2, 7)    two-pair Nines and Sevens
>     Maximum count is limited to five (there is no seven of a kind).
>     Original list is not mutated.
> 
>     >>> groups([11,14,11,14,14])
>     [(3, 14), (2, 11)]
>     >>> groups([7, 9, 10, 9, 7])
>     [(2, 9), (2, 7)]
>     >>> groups([11,14,11,14], 1)
>     [(3, 14), (2, 11)]
>     >>> groups([9,9,9,9,8], 2)
>     [(5, 9), (2, 8)]
>     >>> groups([], 7)
>     [(5, 14), (2, 13)]
>     """
> 
>     result = []
>     counts = [(hand.count(v), v) for v in range(2,15)]
>     for c, v in sorted(counts, reverse=True):
>         newcount = min(5, c + numwildcards) # Add wildcards upto five
>         numwildcards -= newcount - c        # Wildcards remaining
>         if newcount > 1:
>             result.append((newcount, v))
>     return result
> 
> 
> 
> import doctest
> print doctest.testmod()
> 

Wow Raymond that's amazing !
Makes we feel stupid, happy and in awe of python at the same time.
I only felt this weird before when i got married :)

I will have a good look at your code. Excellent :)

Regards,
Benedict Verheyen


From onurb at xiludom.gro  Tue May 17 04:15:03 2005
From: onurb at xiludom.gro (bruno modulix)
Date: Tue, 17 May 2005 10:15:03 +0200
Subject: Importing and namespace visibility
In-Reply-To: <1116261331.774173.62570@g14g2000cwa.googlegroups.com>
References: <1116198993.514542.96350@g44g2000cwa.googlegroups.com>
	<4288be05$0$22928$636a15ce@news.free.fr>
	<1116261331.774173.62570@g14g2000cwa.googlegroups.com>
Message-ID: <4289a808$0$22946$636a15ce@news.free.fr>

jean-marc wrote:
> Merci Bruno, ( and also to Fredrik )
> 
> So I think I understand correctly, if I say that:
> each modulkes requires its own set of reference to whatever objects it
> needs to speak. The interpreter wil see not to create extra copies of
> the compiled code if many modules import the same modules but will make
> them all point to the one already existing (in this program's
> execution).

Seems right.

> Practically, it means every module import whatever it needs - be
> careful with recursive imports - keep things tidy by using the 'import
> suchModule' (and use dotted name chains to reach whatever is needed).

<hint>
There's a way to shortcut long.fully.dotted.Name without using the 'from
xxx import' syntax:

import long.fully.dotted
Name = long.fully.dotted.Name
</hint>

<OT>
> PS Nice weather in Bordeaux ? 

Well... varying, as usual !-)
</OT>


-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From rtomek at ceti.pl  Sat May 28 14:37:40 2005
From: rtomek at ceti.pl (Tomasz Rola)
Date: Sat, 28 May 2005 20:37:40 +0200 (CEST)
Subject: Is there already a Python module to access the USPTO web site?
In-Reply-To: <th0h911kqgkpreepv3sshork93j9op8svd@4ax.com>
Message-ID: <Pine.LNX.3.96.1050528203238.24617B-100000@pioneer.space.nemesis.pl>

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On Sat, 28 May 2005, Terry Carroll wrote:

> I have the need to run periodic searches on the US Patent and
> Trademark Office website, <http://www.uspto.gov/>.  I need a Python
> module to do this.  Before I reinvent the wheel, I thought I'd check
> to see if anyone knew of such a beast.

I don't know but if you are determined to have it in Python, perhaps ypu
should check MozPython.

http://www.thomas-schilz.de/MozPython/README.html

- From what it says, mozpython can access Mozilla internals, so I expect it
to be able to browse in automatic way. This would left only parsing
responces from the server to you.

But I had no time to play with it, so if I am wrong, don't beat me too
hard.

Regards,
Tomasz Rola

- --
** A C programmer asked whether computer had Buddha's nature.      **
** As the answer, master did "rm -rif" on the programmer's home    **
** directory. And then the C programmer became enlightened...      **
**                                                                 **
** Tomasz Rola          mailto:tomasz_rola at bigfoot.com             **


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APaZtygdsUKsQ57B0ZchfTdp
=2wME
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From Scott.Daniels at Acm.Org  Tue May  3 15:28:03 2005
From: Scott.Daniels at Acm.Org (Scott David Daniels)
Date: Tue, 03 May 2005 12:28:03 -0700
Subject: problem in the compiler ?
In-Reply-To: <mailman.107.1115133549.6583.python-list@python.org>
References: <338366A6D2E2CA4C9DAEAE652E12A1DE025204C3@au3010avexu1.global.avaya.com><mailman.95.1115121292.6583.python-list@python.org>	<427782e9$1@nntp0.pdx.net>
	<mailman.107.1115133549.6583.python-list@python.org>
Message-ID: <4277cabf@nntp0.pdx.net>

Glauco Silva wrote:
> ... so, my code is this:
> file : MyClass.py
>     import Pmw
>     class MyClass:
>         def __init__(self):
>             radio = Pmw.RadioSelect()
>             radio.bind('<ButtonRelease>', self.Function)
>             #Pmw.RadioSelect(command = self.Function)
> 
>         def Funciton(self):
>             print "Enter in the Function"
> 
>     if __name__ == '__main__' :
>         MyClass()

But, when I make such a file, I get:

Traceback (most recent call last):
   File "MyClass.py", line 12, in ?
     MyClass()
   File "MyClass.py", line 5, in __init__
     radio.bind('<ButtonRelease>', self.Function)
AttributeError: MyClass instance has no attribute 'Function'

Cut-paste is better than typing what you mean.  When I correct
the spelling of "Funciton," I get no output at all.
If I do:
     >>> import Pmw
     >>> Pmw.version()
I get:
     '1.2'

I merged your supposed code with the Pmw documentation's page on
the RadioSelect class:
	http://pmw.sourceforge.net/doc/RadioSelect.html
  I reformatted a bit and commented with ## a couple of things I suspect
you have in your unrevealed code:

----------------------
import Pmw
class MyClass:
     def __init__(self):
         radio = Pmw.RadioSelect()
         radio.bind('<ButtonRelease>', self.Function)
         Pmw.RadioSelect(command=self.Function)

     def Function(self):
         print "Enter in the Function"

class Demo:
     def __init__(self, parent):
         # Create and pack a horizontal RadioSelect widget.
         horiz = Pmw.RadioSelect(parent, labelpos='w',
                     command=self.callback, label_text='Horizontal',
                     frame_borderwidth=2, frame_relief='ridge')
         horiz.pack(fill='x', padx=10, pady=10)

         # Add some buttons to the horizontal RadioSelect.
         for text in ('Fruit', 'Vegetables', 'Cereals', 'Legumes'):
             horiz.add(text)
         horiz.invoke('Cereals')  ## this fires off the Cereals button

         # Create and pack a multiple selection RadioSelect widget.
         self.multiple = Pmw.RadioSelect(parent, labelpos='w',
             command=self.multcallback, label_text='Multiple\nselection',
             frame_borderwidth=2, frame_relief='ridge',
             selectmode='multiple')
         self.multiple.pack(fill='x', padx=10)

         # Add some buttons to the multiple selection RadioSelect.
         for text in ('Apricots', 'Eggplant', 'Rice', 'Lentils'):
             self.multiple.add(text)
         self.multiple.invoke('Rice') ## this fires off the Rice button

         # Make & pack a vertical RadioSelect widget, with checkbuttons.
         self.checkbuttons=Pmw.RadioSelect(parent, labelpos='w',
             buttontype='checkbutton',
             orient='vertical', command=self.checkbuttoncallback,
             label_text='Vertical,\nusing\ncheckbuttons',
             hull_borderwidth=2, hull_relief='ridge')
         self.checkbuttons.pack(side='left', expand=1, padx=10, pady=10)

         # Add some buttons to the checkbutton RadioSelect.
         for text in ('Male', 'Female'):
             self.checkbuttons.add(text)
         self.checkbuttons.invoke('Male') ## fires the Male button
         self.checkbuttons.invoke('Female') ## fires the Female button

         # Create and pack a RadioSelect widget, with radiobuttons.
         radiobuttons = Pmw.RadioSelect(parent, buttontype='radiobutton',
             orient='vertical', labelpos='w', command=self.callback,
             label_text='Vertical,\nusing\nradiobuttons',
             hull_borderwidth=2, hull_relief='ridge')
         radiobuttons.pack(side='left', expand=1, padx=10, pady=10)

         # Add some buttons to the radiobutton RadioSelect.
         for text in ('Male', 'Female', 'Both', 'Neither'):
             radiobuttons.add(text)
         radiobuttons.invoke('Both')  ## this fires off the Both button

     def callback(self, tag):
         # This is called whenever the user clicks on a button
         # in a single select RadioSelect widget.
         print 'Button', tag, 'was pressed.'

     def multcallback(self, tag, state):
         # This is called whenever the user clicks on a button
         # in the multiple select RadioSelect widget.
         if state:
            print 'mButton', tag, 'was pressed.',
         else:
            print 'mButton', tag, 'was released.',
         print 'Selection:', self.multiple.getcurselection()

     def checkbuttoncallback(self, tag, state):
         # This is called whenever the user clicks on a button
         # in the checkbutton RadioSelect widget.
         if state:
            print 'cButton', tag, 'was pressed.',
         else:
            print 'cButton', tag, 'was released.',
         print 'Selection:', self.checkbuttons.getcurselection()

if __name__ == '__main__' :
     MyClass()
     print 'MyClass constructed'
     Demo(None)
     print 'Demo constructed'

----------------
When I run it, I get:

     MyClass constructed
     Button Cereals was pressed.
     mButton Rice was pressed. Selection: ('Rice',)
     cButton Male was pressed. Selection: ('Male',)
     cButton Female was pressed. Selection: ('Male', 'Female')
     Button Both was pressed.
     Demo constructed

I suspect you are either not running the code you think you are running,
or you are not really telling us what code you are running.  You are
trying to simplify for exposition, and in the process hiding the issue.

By the way, none of this code runs the Tkinter mainloop (which would
probably be a good idea).  I would suggest running something like this 
at the end:

if __name__ == '__main__' :
     import Tkinter
     # MyClass()
     # print 'MyClass constructed'
     Demo(None)
     print 'Demo constructed'
     Tkinter.mainloop()


--Scott David Daniels
Scott.Daniels at Acm.Org


From simon.brunning at gmail.com  Mon May  9 08:50:01 2005
From: simon.brunning at gmail.com (Simon Brunning)
Date: Mon, 9 May 2005 13:50:01 +0100
Subject: clear the files using python
In-Reply-To: <1115614504.045200.59420@o13g2000cwo.googlegroups.com>
References: <1115614504.045200.59420@o13g2000cwo.googlegroups.com>
Message-ID: <8c7f10c605050905502a832313@mail.gmail.com>

On 8 May 2005 21:55:04 -0700, Sez <sezhunter at yahoo.com.au> wrote:
> Could you please point me to right direction here. Or provide some
> example code. In the mean time I'll be searching myself. I know you
> guys hate novice people like me but I would appreciated if you could
> provide little help here.

Oh, we don't hate novices here, not at all. On the other hand, we
aren't going to write your script for you. ;-) Why not take a look at
the Python beginners guide (at
<http://www.python.org/moin/BeginnersGuide>), and come back to us when
you have a specific problem.

-- 
Cheers,
Simon B,
simon at brunningonline.net,
http://www.brunningonline.net/simon/blog/


From kent37 at tds.net  Thu May 26 16:47:06 2005
From: kent37 at tds.net (Kent Johnson)
Date: Thu, 26 May 2005 16:47:06 -0400
Subject: using timeit for a function in a class
In-Reply-To: <ZFjle.101596$KL7.6197297@phobos.telenet-ops.be>
References: <ZFjle.101596$KL7.6197297@phobos.telenet-ops.be>
Message-ID: <429635b9$1_3@newspeer2.tds.net>

flupke wrote:
> 
> Hi,
> 
> i tried to use timeit on a function in a class but it doesn't do what i 
> think it should do ie. time :)
> In stead it starts printing line after line of hello time test!
> What am i doing wrong in order to time the f function?

Hmm, by default Timer.timeit() calls the function being timed 1000000 times. That's a lot of "hello 
time test" =:-)

Kent


From fredrik at pythonware.com  Wed May 11 12:41:19 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Wed, 11 May 2005 18:41:19 +0200
Subject: Problems with csv module
References: <d5sngn$l4$03$1@news.t-online.com><mailman.338.1115809896.29826.python-list@python.org><d5spph$ktm$01$1@news.t-online.com>
	<a4r381p3s5uhud58tvd2m2nod1ebmo48u0@4ax.com>
Message-ID: <d5tc55$q3e$1@sea.gmane.org>

Richie Hindle wrote:

> [Florian]
> > You mean that csv.reader can't work with unicode as the delimiter parameter?
>
> Exactly.  http://www.python.org/doc/2.3.5/lib/module-csv.html says:
>
> "Note: This version of the csv module doesn't support Unicode input. Also,
> there are currently some issues regarding ASCII NUL characters. Accordingly,
> all input should generally be printable ASCII to be safe. These restrictions
> will be removed in the future. "
>
> That note is still there in the current development docs, so it looks like
> it hasn't yet been fixed.

does the CSV format even support Unicode-encoded data streams?

(in contrast to, say, Latin-1 or UTF-8 encoded string fields)

this is a very common XML confusion, where people think that just be-
cause a file format can be used to store Unicode data, a parser for that
format ought to be able to parse Unicode strings...

</F>





From http  Sat May 21 20:57:17 2005
From: http (Paul Rubin)
Date: 21 May 2005 17:57:17 -0700
Subject: first release of PyPy
References: <mailman.264.1116625088.8733.python-list@python.org>
	<1116629407.638782.145950@g47g2000cwa.googlegroups.com>
	<1116644536.741250.249860@g44g2000cwa.googlegroups.com>
	<mailman.279.1116649250.8733.python-list@python.org>
	<1116653460.808204.74460@g43g2000cwa.googlegroups.com>
	<87mzqpytep.fsf@wilson.rwth-aachen.de>
	<7xfywhxerd.fsf@ruckus.brouhaha.com>
	<87is1dyru8.fsf@wilson.rwth-aachen.de>
	<du7hdgxt4th.fsf@amadeus.cc.tut.fi>
	<mailman.303.1116722836.8733.python-list@python.org>
Message-ID: <7xu0kwrsb6.fsf@ruckus.brouhaha.com>

Christian Tismer <tismer at stackless.com> writes:
> Type inference works fine for our implementation of Python,
> but it is in fact very limited for full-blown Python programs.
> Yoou cannot do much more than to try to generate effective code
> for the current situation that you see. But that's most often
> quite fine.

Type inference (or static type declarations) is one part of compiling
dynamic languages but I think its importance is overblown in these
Python compiler threads.  There's lots of compiled Lisp code out there
that's completely dynamic, with every operation dispatching on the
type tags in the Lisp objects.  Yes, the code runs slower than when
the compiler knows the type in advance, but it's still much faster
than interpreted code.

I'd expect one of the worst bottlenecks in Python is the multiple
levels of dictionary lookup needed when you say a.x().  The
interpreter has to search through the method dictionaries for class(a)
and all of its superclasses.  It has to do this every time you do the
operation, since those dictionaries can change at any time.  Being
able to do that, it seems to me, is NOT in the interest of reliable or
maintainable programming--look at the cruft in socket.py, for example.
Being able to statically generate the method call (like a C++ compiler
does) or even just being able to cache a method list in each class
(avoiding searching through all the superclasses on subsequent calls
to any operation) would probably make a big difference in execution
speed in both the compiler and interpreter.  It would require a change
to the Python language but I think the change would be a beneficial
one both from the software maintainability and the performance point
of view.


From bokr at oz.net  Wed May 11 14:50:13 2005
From: bokr at oz.net (Bengt Richter)
Date: Wed, 11 May 2005 18:50:13 GMT
Subject: Merging overlapping spans/ranges
References: <4280b31b$0$198$edfadb0f@dread12.news.tele.dk>
	<42813c84.1201907341@news.oz.net> <bQbge.73336$c24.41132@attbi_s72>
Message-ID: <428234d3.1265474085@news.oz.net>

On Tue, 10 May 2005 23:53:43 GMT, Jim Sizelove <sizelji at insightbb.com> wrote:
>Bengt Richter wrote:
[...]
>> Maybe (not tested beyond what you see ;-)
I had that feeling ... somehow the word "max" was trying to get my attention,
but I posted without figuring out why ;-/
>
>It is with some trepidation that I write this message; after hanging 
>around in c.l.p for the better part of a year, I have come to expect 
>Bengt's messages to be right-on and error-free.
Would that 'twere so ;-)

>
>However this time...  :)
>>  >>> def mergespans(spans):
>>  ...      start = end = None
>>  ...      for s,e in sorted(spans):
>>  ...          if start is None: start, end = s,e; continue
>>  ...          if s <= end: end = e; continue
>>  ...          yield start, end
>>  ...          start,end = s,e
>>  ...      if start is not None: yield start, end
>>  ...
>>  >>> spans = [(0,3), (4,7), (2,5), (9,14), (12,17)]
>>  >>> list(mergespans(spans))
>>  [(0, 7), (9, 17)]
>
>There can be a problem in mergespans if one span fits inside another:
>
Good call. I should have thought of it.

>  >>> spans = [(0,5), (4,7), (2,3), (9,14), (12,17)]
>  >>> list(mergespans(spans))
>  [(0, 3), (4, 7), (9, 17)]
>
>Here is a revised version (not tested beyond what you see ;-)
>  >>> def mergespans(spans):
>  ...     start = end = None
>  ...     for s,e in sorted(spans):
>  ...         if start is None:
>  ...             start, end = s,e
>  ...             continue
>  ...         if s <= end:
>  ...             if end < e:
>  ...                 end = e
>  ...             continue
>  ...         yield start, end
>  ...         start,end = s,e
>  ...     if start is not None:
>  ...         yield start, end
>  ...
>  >>> list(mergespans([(0,5), (4,7), (2,3), (9,14), (12,17)]))
>  [(0, 7), (9, 17)]
>  >>> list(mergespans([(0,3), (4,7), (2,5), (9,14), (12,17)]))
>  [(0, 7), (9, 17)]
>
>Can anyone find any other errors in this? ;-)
>
Not off hand. OTOH, I really didn't like the aesthetics of all that crufty logic in my original.
Maybe (again, barely tested ;-)

 >>> def mergespans(spans):
 ...     it = iter(sorted(spans))
 ...     start, end = it.next()
 ...     for s,e in it:
 ...         if s <= end:
 ...             end = max(end, e) # was what "max" was trying to tell me, I think
 ...         else:
 ...             yield start, end
 ...             start,end = s,e
 ...     yield start, end
 ...
 >>> list(mergespans([(0,5), (4,7), (2,3), (9,14), (12,17)]))
 [(0, 7), (9, 17)]
 >>> list(mergespans([(0,3), (4,7), (2,5), (9,14), (12,17)]))
 [(0, 7), (9, 17)]


>With humble regards,
Me too. UIAM we're all still human here (even my favorite 'bots, I think  ;-)

Regards,
Bengt Richter


From rkern at ucsd.edu  Thu May  5 05:48:43 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Thu, 05 May 2005 02:48:43 -0700
Subject: Strange behaviour of __cmp__
In-Reply-To: <1115284634.318269.129610@g14g2000cwa.googlegroups.com>
References: <1115284634.318269.129610@g14g2000cwa.googlegroups.com>
Message-ID: <d5cppe$jl1$1@sea.gmane.org>

janeaustine50 at hotmail.com wrote:
> See the following...
> 
> 
>>>>class X(list):
> 
> 	def __cmp__(self,anX):
> 		print "comparing from",id(self)
> 		return cmp(self.v,anX.v)
> 
> 
> 
>>>>x1=X()
>>>>x2=X()
>>>>x1.v=-1
>>>>x2.v=100
>>>>x1>x2
> 
> False
> 
>>>>x1<x2
> 
> False
> 
> I expected x1>x2 or x1<x2 were False and True respectively.

list.__lt__ and list.__gt__ are being used in preference to X.__cmp__. 
Override these methods.

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From carlos80 at gmail.com  Fri May 20 21:06:00 2005
From: carlos80 at gmail.com (los)
Date: 20 May 2005 18:06:00 -0700
Subject: Running a python program during idle time only
Message-ID: <1116637560.499307.28700@o13g2000cwo.googlegroups.com>

Hi,

I'm trying to create a program similar to that of Google's desktop that
will crawl through the hard drive and index files.  I have written the
program and as of now I just put the thread to sleep for 1 second after
indexing a couple of files.

I'm wondering if anyone knows of a way that I could make so that the
program will run at full speed only runs after the computer has been
idle for a while.  I've looked at the "nice" command but that's not
exactly what I want.

Let me know if it isn't clear what I explained above. 

Thanks



From magicmas at spymac.com  Sun May 29 03:57:07 2005
From: magicmas at spymac.com (cheng)
Date: 29 May 2005 00:57:07 -0700
Subject: need help of RE
In-Reply-To: <mailman.230.1117353059.18027.python-list@python.org>
References: <1117352350.179209.206930@z14g2000cwz.googlegroups.com>
	<mailman.230.1117353059.18027.python-list@python.org>
Message-ID: <1117353427.242568.47010@g43g2000cwa.googlegroups.com>

im sorry, my engilsh is not vell well,

the string not only contain '&' and '|' and it can be anyting

i just want to split out the "whole word" inside the string



From no_spam_please at this.domain.is.invalid  Tue May 24 19:23:45 2005
From: no_spam_please at this.domain.is.invalid (Dan Poirier)
Date: Tue, 24 May 2005 23:23:45 GMT
Subject: Access lotus notes using Python
References: <lWike.155$NV3.3324@news1.nokia.com> <87r7fyywi0.fsf@hector.domek>
Message-ID: <m2acmkdx8e.fsf@pi.local>

Peter Dembinski <pdemb at gazeta.pl> writes:

> "Sateesh" <sateeshkavuri at yahoo.com> writes:
>
>> Hi,
>> Is it possible to access Lotus notes using Python? Can anyone
>> provide me some pointers?
>
> jython + LN Java bindings may be usable

Yes.  I do this all the time.

-- 
Dan Poirier -- Email: my last name at pobox dot com


From toc-01-nospam-removethisword at blikroer.dk  Sun May 22 16:48:45 2005
From: toc-01-nospam-removethisword at blikroer.dk (Tomas Christiansen)
Date: 22 May 2005 20:48:45 GMT
Subject: Send all packets (socket programming)
Message-ID: <Xns965EE7F2C282Ctomascdenmark@212.242.40.162>

Is there a way to make shure that all packets has been sent before issuing 
a Shutdown and/or Close on a (TCP) Socket?

The problem is that "the other end" interprets a reset-flag (RST) on an IP-
packet as an indication of an error. Instead the finish-flag (FIN) must be 
set, in order to close the connection non-errornously. That can be achieved 
by using socket.shutdown(SHUT_RDWR) followed by socket.close().

BUT if all data has not been sent, sometimes shutdown(SHUT_RDWR) followed 
by close(), sets RST, and the other end thinks that something went wrong 
(the other end is some unknown TCP/IP printer) and goes to an error-state.

-------
Tomas


From raviteja.bhupatiraju at gmail.com  Tue May 31 06:54:46 2005
From: raviteja.bhupatiraju at gmail.com (raviteja.bhupatiraju at gmail.com)
Date: 31 May 2005 03:54:46 -0700
Subject: Newbie Here
In-Reply-To: <mailman.273.1117521603.18027.python-list@python.org>
References: <mailman.273.1117521603.18027.python-list@python.org>
Message-ID: <1117536886.228934.22540@z14g2000cwz.googlegroups.com>

Not sure what you mean Unix related stuff. Anything can be.

I use Python as a general purpose language. Python is good for most
things I do.
Recently I used it for Web Applications (CherryPy), Search Engines
(Lupy, PyLucene), Middleware (Ice), Swing GUIs (Jython), data
transformations etc.



From rkern at ucsd.edu  Fri May  6 07:49:39 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Fri, 06 May 2005 04:49:39 -0700
Subject: win32: structured storage
In-Reply-To: <HxBee.23620$R46.6537@tornado.socal.rr.com>
References: <HxBee.23620$R46.6537@tornado.socal.rr.com>
Message-ID: <d5fl7s$pqd$1@sea.gmane.org>

tlviewer wrote:

> Is there another way to parse the central directory out of
> a CHM file?

google("chmlib python")

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From Sebastien.Boisgerault at gmail.com  Wed May 11 16:25:54 2005
From: Sebastien.Boisgerault at gmail.com (=?iso-8859-1?q?S=E9bastien_Boisg=E9rault?=)
Date: 11 May 2005 13:25:54 -0700
Subject: Python Documentation (should be better?)
In-Reply-To: <mailman.395.1115841498.29826.python-list@python.org>
References: <mailman.389.1115837608.29826.python-list@python.org>
	<rs2dnWXMCe-Rwx_fRVn-qw@comcast.com>
	<mailman.395.1115841498.29826.python-list@python.org>
Message-ID: <1115843154.275383.134480@o13g2000cwo.googlegroups.com>


Christopher J. Bottaro wrote:

> [...]

> Cuz I think the Language Reference is really more of a grammer
reference and
> far too technical to look up simple things like "how to declare a
> function".
>
> I guess what I'm trying to say is that there is no manual (for the
language
> itself, not the modules).  There is just the tutorial that serves as
the
> manual.  I think it should evolve into a manual that is more
comprehensive
> and organized more like other programming manuals (chapter on control
> structures, functions, classes, inheritance, etc).

Fair enough. An 'upgraded' tutorial that would include simple
discussion on some 'advanced topics' could be helpful. For example,
there is (almost) no reference to the new-style classes inside the
tutorial, the "yield" keyword and generator stuff is described in
half a page, etc. 

SB



From cam.ac.uk at mh391.invalid  Fri May 20 08:49:40 2005
From: cam.ac.uk at mh391.invalid (Michael Hoffman)
Date: Fri, 20 May 2005 13:49:40 +0100
Subject: ANN: new release of RUR-PLE available
In-Reply-To: <mailman.181.1116468097.8733.python-list@python.org>
References: <mailman.181.1116468097.8733.python-list@python.org>
Message-ID: <d6kmcp$9dj$1@gemini.csx.cam.ac.uk>

Andr? Roberge wrote:
> Version 0.8.6a is now available.

You might see a bit more interest if you briefly explain what RUR-PLE 
is, and where to find it.
-- 
Michael Hoffman


From steven.bethard at gmail.com  Wed May 11 15:33:32 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Wed, 11 May 2005 13:33:32 -0600
Subject: Python Documentation (should be better?)
In-Reply-To: <mailman.389.1115837608.29826.python-list@python.org>
References: <mailman.389.1115837608.29826.python-list@python.org>
Message-ID: <rs2dnWXMCe-Rwx_fRVn-qw@comcast.com>

Christopher J. Bottaro wrote:
> After we were done, we talked about the pros and cons of the languages. 
> Funny, the con of Python (documentation) is PHP's strong point.  The PHP
> manual is extremely easy to navigate and its search feature works great. 
> Contrast that with Python, where you have to use "the tutorial" as the
> manual.  Also, the tutorial is just that...a tutorial, its a NOT a manual. 
> Its not organized like a manual and its not comprehensive like a manual,
> hell, raw_input() isn't even mentioned in Chapter 7. Input and Output.
> 
[snip]
> 
> What do yall think?

I have to say, I don't really have your troubles with the documentation, 
and I hardly ever use dir() in the interactive shell.  You mention only 
referring to the tutorial.  Why don't you check the Language 
Reference[1] or Library Reference[2]?

That said, if you see spots where the documentation needs help, the 
right answer is to file a feature request[3] to add documentation.  If 
you're feeling especially helpful, providing the documentation you'd 
like to be added would be greatly appreciated.  Python's a community 
effort -- if you see weak points, you can help the community build a 
better Python by taking the time to address them yourself.

STeVe

[1]http://docs.python.org/ref/ref.html
[2]http://docs.python.org/lib/lib.html
[3]http://sourceforge.net/tracker/?group_id=5470&atid=355470


From http  Fri May 13 16:30:36 2005
From: http (Paul Rubin)
Date: 13 May 2005 13:30:36 -0700
Subject: 80 bit precision ?
References: <mailman.50.1116011033.29328.python-list@python.org>
	<1116015957.305652.70370@g44g2000cwa.googlegroups.com>
Message-ID: <7xu0l6eumr.fsf@ruckus.brouhaha.com>

"S?bastien Boisg?rault" <Sebastien.Boisgerault at gmail.com> writes:
> http://sourceforge.net/projects/gmpy/
> 
> To be honest, I have never used it ;). A review would be
> appreciated.

I've used it for large integer calculations and it's great, around 5x
faster than Python longs if I remember right.  I did hit a couple bugs
that have been fixed since then, and there are a few interface quirks.


From bwooster47 at gmail.com  Fri May 13 11:55:26 2005
From: bwooster47 at gmail.com (bwooster47 at gmail.com)
Date: 13 May 2005 08:55:26 -0700
Subject: Safe eval, or how to get list from string
Message-ID: <1115999726.286709.140690@f14g2000cwb.googlegroups.com>

I've to use ConfigParser.

It returns values that are exactly in the config file, so get string
variables like:
int1 with quotes and characers: "42"
this is easy to convert to int:
realint = int(int1)

I've read the tutorial, and the FAQ, and not sure if I missed it, but
other than calling eval (which everyone says is unsafe), I don't know
if there is another way to do this:
string1 has "this is a string" or however complex a string (""" aaa
""").
I can do
realstring = eval(string1)
or
if there is list1 = "[ 'filea', 'fileb', ]", I can get at list by
doing:
reallist = eval(list1)

is there an easier/simpler method of doing the same thing as realstring
and reallist lines above?



From jman at math.com  Mon May  2 05:15:47 2005
From: jman at math.com (Jason Manley)
Date: Mon, 2 May 2005 21:15:47 +1200
Subject: pyFLTK
Message-ID: <4275efc3$1@clear.net.nz>

Hello
I am very interested in the pyFLTK GUI widget set. Unfortunately the webpage 
and mailing lists are very quiet, does anyone here use it or know of a 
resource I can access to help me with some examples?

Cheers
JM 




From ckwiguno at gmail.com  Tue May  3 09:37:14 2005
From: ckwiguno at gmail.com (custard_pie)
Date: 3 May 2005 06:37:14 -0700
Subject: sorting list and then return the index of the sorted item
Message-ID: <1115127433.984686.99060@f14g2000cwb.googlegroups.com>

I need help sorting a list...I just can't figure out how to sort a list
and then return a list with the index of the sorted items in the list
for example if the list I want to sort is [2,3,1,4,5]
I need [2,0,1,3,4] to be returned
Can someone help please....



From siona at chiark.greenend.org.uk  Wed May 25 08:05:56 2005
From: siona at chiark.greenend.org.uk (Sion Arrowsmith)
Date: 25 May 2005 13:05:56 +0100 (BST)
Subject: Just remember that Python is sexy
References: <1116899839.323185.58350@g49g2000cwa.googlegroups.com>
Message-ID: <O9v*jQrPq@news.chiark.greenend.org.uk>

Scott Kirkwood <scottakirkwood at gmail.com> wrote:
>I often can't remember that to remove spaces from a string whether it's
>strip() or trim(), and when finding patterns with the re library
>whether it's find() or search() and when iterating over key, values of
>a dictionary whether it's items() or entries().
>But then I remember that Python is "sexy".
>It is sexier to strip() than to trim().
>You do a strip search() not a find() search.
>And you remove items() of clothing and not entries() of clothing.

But can you come up with a method for remembering which way
round str.find() and str.index() are?

-- 
\S -- siona at chiark.greenend.org.uk -- http://www.chaos.org.uk/~sion/
  ___  |  "Frankly I have no feelings towards penguins one way or the other"
  \X/  |    -- Arthur C. Clarke
   her nu become? se bera eadward ofdun hl?ddre heafdes b?ce bump bump bump


From finite.automaton at gmail.com  Wed May  4 15:58:09 2005
From: finite.automaton at gmail.com (Lonnie Princehouse)
Date: 4 May 2005 12:58:09 -0700
Subject: python and glut
References: <kp7ee.1331058$35.49670814@news4.tin.it>
Message-ID: <1115236689.318521.111420@z14g2000cwz.googlegroups.com>

See if you can run `glxgears`, and read the output of `glxinfo`.   If
neither of those work, you will probably have better luck on a debian
or XFree86/xorg forum than on c.l.py



From lycka at carmen.se  Mon May 30 05:23:07 2005
From: lycka at carmen.se (Magnus Lycka)
Date: Mon, 30 May 2005 11:23:07 +0200
Subject: regexp for sequence of quoted strings
In-Reply-To: <1117050058.836444.189460@o13g2000cwo.googlegroups.com>
References: <1117050058.836444.189460@o13g2000cwo.googlegroups.com>
Message-ID: <d7em1r$7nj$1@wake.carmen.se>

gry at ll.mit.edu wrote:
> I have a string like:
>  {'the','dog\'s','bite'}
> or maybe:
>  {'the'}
> or sometimes:
>  {}
...
> I want to end up with a python array of strings like:
> 
> ['the', "dog's", 'bite']

Assuming that you trust the input, you could always use eval,
but since it seems fairly easy to solve anyway, that might
not be the best (at least not safest) solution.

 >>> strings = [r'''{'the','dog\'s','bite'}''', '''{'the'}''', '''{}''']
 >>> for s in strings:
...     print eval('['+s[1:-1]+']')
...
['the', "dog's", 'bite']
['the']
[]


From exogen at gmail.com  Fri May 27 11:32:51 2005
From: exogen at gmail.com (Brian Beck)
Date: 27 May 2005 08:32:51 -0700
Subject: Intellisense and the psychology of typing
In-Reply-To: <1117125072.825389.74190@g47g2000cwa.googlegroups.com>
References: <1117125072.825389.74190@g47g2000cwa.googlegroups.com>
Message-ID: <1117207971.537557.262220@f14g2000cwb.googlegroups.com>

Well, there are two distinct features of IntelliSense as you know it.
One is auto-completion and the other is contextual help.

Auto-completion is included almost all beefy Python IDE's.

Contextual help is included even in IDLE, where if you begin typing a
function call, its docstring pops up around where you are typing.
Since many functions have dynamic arguments, I think this really is the
best solution, since the implementor of the function knows what would
be the most helpful to show.  Open the interactive IDLE prompt and type
max(, iter(, help(, for example -- although most of those are pretty
minimal.



From steven.bethard at gmail.com  Mon May 16 15:10:30 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Mon, 16 May 2005 13:10:30 -0600
Subject: python-dev Summary for 2005-04-16 through 2005-04-30
In-Reply-To: <du77jhznj6r.fsf@lehtori.cc.tut.fi>
References: <mailman.13.1116201983.8733.python-list@python.org>
	<1116258692.305537.244260@g49g2000cwa.googlegroups.com>
	<du77jhznj6r.fsf@lehtori.cc.tut.fi>
Message-ID: <baednXPIjri_bRXfRVn-2g@comcast.com>

Ville Vainio wrote:
>>>>>>"Kay" == Kay Schluehr <kay.schluehr at gmx.net> writes:
> 
> 
>     Kay> but PEP 340 is already withdrawn by the BDFL. [1]
> 
>     Kay> There won't be any Ruby-like blocks because they hide control
>     Kay> flow.
> 
> Bummer. I would have greatly enjoyed seeing the only real reason for
> choosing Ruby over Python blown away...

If you're interested in why Guido doesn't want blocks with arbitrary 
control flow, you should check out:

http://mail.python.org/pipermail/python-dev/2005-May/053702.html

STeVe


From sjmachin at lexicon.net  Sat May  7 20:02:05 2005
From: sjmachin at lexicon.net (John Machin)
Date: Sun, 08 May 2005 10:02:05 +1000
Subject: Trouble saving unicode text to file
References: <1115500976.571232.76100@z14g2000cwz.googlegroups.com>
Message-ID: <ameq71lt3ohe3o85fsh4m456qgrnj82dfk@4ax.com>

On 7 May 2005 14:22:56 -0700, "Svennglenn" <Danielnord15 at yahoo.se>
wrote:

>I'm working on a program that is supposed to save
>different information to text files.
>
>Because the program is in swedish i have to use
>unicode text for ??? letters.

"program is in Swedish": to the extent that this means "names of
variables are in Swedish", this is quite irrelevant. The variable
names could be in some other language, like Slovak, Slovenian, Swahili
or Strine. Your problem(s) (PLURAL) arise from the fact that your text
data is in Swedish, the representation of which uses a few non-ASCII
characters. Problem 1 is the representation of Swedish in text
constants in your program; this is causing the exception you show
below but curiously didn't ask for help with.

>
>When I run the following testscript I get an error message.
>
># -*- coding: cp1252 -*-
>
>titel = "???"
>titel = unicode(titel)

You should use titel = u"???"
Works, and saves wear & tear on your typing fingers.

>
>print "Titel type", type(titel)
>
>fil = open("testfil.txt", "w")
>fil.write(titel)
>fil.close()
>
>
>Traceback (most recent call last):
>  File "D:\Documents and
>Settings\Daniel\Desktop\Programmering\aaotest\aaotest2\aaotest2.pyw",
>line 5, in ?
>    titel = unicode(titel)
>UnicodeDecodeError: 'ascii' codec can't decode byte 0xe5 in position 0:
>ordinal not in range(128)
>
>
>I need to have the titel variable in unicode format because when I
>write
>??? in a entry box in Tkinkter it makes the value to a unicode
>format
>automaticly.

The general rule in working with Unicode can be expressed something
like "work in Unicode all the time i.e. decode legacy text as early as
possible; encode into legacy text (if absolutely required) as late as
possible (corollary: if forced to communicate with another
Unicode-aware system over an 8-bit wide channel, encode as utf-8, not
cp666)"

Applying this to Problem 1 is, as you've seen, trivial: To the extent
that you have text constants at all in your program, they should be in
Unicode.

Now after all that, Problem 2: how to save Unicode text to a file?

Which raises a question: who or what is going to read your file? If a
Unicode-aware application, and never a human, you might like to
consider encoding the text as utf-16. If Unicode-aware app plus
(occasional human developer or not CJK and you want to save space),
try utf-8. For general use on Windows boxes in the Latin1 subset of
the universe, you'll no doubt want to encode as cp1252. 

>
>Are there anyone who knows an easy way to save this unicode format text
>to a file?

Read the docs of the codecs module -- skipping over how to register
codecs, just concentrate on using them.

Try this:

# -*- coding: cp1252 -*-
import codecs
titel = u"???"
print "Titel type", type(titel)
f1 = codecs.open('titel.u16', 'wb', 'utf_16')
f2 = codecs.open('titel.u8', 'w', 'utf_8')
f3 = codecs.open('titel.txt', 'w', 'cp1252')
# much later, maybe in a different function
# maybe even in a different module
f1.write(titel)
f2.write(titel)
f3.write(titel)
# much later
f1.close()
f2.close()
f3.close()

Note: doing it this way follows the "encode as late as possible" rule
and documents the encoding for the whole file, in one place. Other
approaches which might use the .encode() method of Unicode strings and
then write the 8-bit-string results at different times and in
different functions/modules are somewhat less clean and more prone to
mistakes.

HTH,
John


From kent37 at tds.net  Tue May  3 21:58:02 2005
From: kent37 at tds.net (Kent Johnson)
Date: Tue, 03 May 2005 21:58:02 -0400
Subject: xmlrpclib and decoding entity references
In-Reply-To: <1115132826.795008.320190@z14g2000cwz.googlegroups.com>
References: <1115132826.795008.320190@z14g2000cwz.googlegroups.com>
Message-ID: <427827a2$1_3@newspeer2.tds.net>

Chris Curvey wrote:
> I'm writing an XMLRPC server, which is receiving a request (from a
> non-Python client) that looks like this (formatted for legibility):
> 
> <?xml version="1.0"?>
> <methodCall>
> <methodName>echo</methodName>
> <params>
> <param>
> <value>
> <string>Le Martyre de Saint Andr&#xe9; &lt;BR&gt; avec inscription
> &apos;Le Dominiquain.&apos; et &apos;Le tableau fait par le dominicain,
> d&apos;apr&#xe8;s son dessein &#xe0;... est &#xe0; Rome, &#xe0;
> l&apos;&#xe9;glise Saint Andr&#xe9; della Valle&apos; sur le
> cadre&lt;BR&gt; craie noire, plume et encre brune, lavis brun
> rehauss&#xe9; de blanc sur papier brun&lt;BR&gt; 190 x 228 mm. (7 1/2 x
> 9 in.)</string>
> </value>
> </param>
> </params>
> </methodCall>
> 
> But when my "echo" method is invoked, the value of the string is:
> 
> Le Martyre de Saint Andr; <BR> avec inscription 'Le Dominiquain.' et
> 'Le tableau fait par le dominicain, d'apr:s son dessein 2... est 2
> Rome, 2 l';glise Saint Andr; della Valle' sur le cadre<BR> craie noire,
> plume et encre brune, lavis brun rehauss; de blanc sur papier brun<BR>
> 190 x 228 mm. (7 1/2 x 9 in.)
> 
> Can anyone give me a lead on how to convert the entity references into
> something that will make it through to my method call?

Are you rolling your own XML parser? (Why?) An off-the-shelf parser should take care of this for 
you. Do you know about xmlrpclib and SimpleXMLRPCServer?

Kent


From stephane.bronsart at teledisnet.be  Thu May 12 16:35:59 2005
From: stephane.bronsart at teledisnet.be (StepH)
Date: Thu, 12 May 2005 22:35:59 +0200
Subject: Python 2.4 & BLT ?
In-Reply-To: <mailman.408.1115850748.29826.python-list@python.org>
References: <4280f791$0$344$4d4efb8e@read.news.be.uu.net>	<mailman.317.1115769735.29826.python-list@python.org>	<42823F8D.6010705@teledisnet.be>
	<mailman.408.1115850748.29826.python-list@python.org>
Message-ID: <4283be30$0$349$4d4efb8e@read.news.be.uu.net>

Ron Adam a ?crit :
> StepH wrote:
> 
>> Ron Adam a ?crit :
>>
>>> StepH wrote:
>>>
>>>
>>>> Hi,
>>>>
>>>> I'm not able to install BLT on my Python 2.4 (upgraded to 2.4.1) 
>>>> distibution...
>>>>
>>>> I'v try to download btlz-for-8.3.exe, but when i try to install it, 
>>>> i've a msgbox saying to the file is corrupt...
>>>>
>>>> Any idea ?
>>>>
>>>> Thanks.
>>>>
>>>> StepH.
>>>
>>>
>>>
>>> Have you tried blt2.4z-for-8.4exe?
>>>
>>> http://blt.sourceforge.net
>>
>>
>>
>> yes.  When i try to execute it, a small msgbox apprea with the msg:
>> Corrupt installation detected!
>>
>> Any idea ?
> 
> 
> Sounds like it might not be a corrupted install exe file, but a 
> previously installed version that is corrupted.
>

Hum, i've try to re-install all from scratch without success...

> Does the message box say anything else?  With just "Corrupt installation 
> detected!", it could also be a support file or missing dll that the 
> installer needs.

Yes.  It's the only message that is displayed.
I've to go ahead...  so for now i'll use tk.Canvas for my display...

If you have idea ?

> 
> _Ron
> 
> 
> 
> 
> 
> 
> 


From roy at panix.com  Tue May 31 20:22:44 2005
From: roy at panix.com (Roy Smith)
Date: Tue, 31 May 2005 20:22:44 -0400
Subject: The need to put "self" in every method
References: <1117554344.938440.54700@g14g2000cwa.googlegroups.com>
	<mailman.296.1117557471.18027.python-list@python.org>
	<429CE8F4.5070301@lexicon.net>
	<mailman.307.1117585109.18027.python-list@python.org>
Message-ID: <roy-5B81DC.20224331052005@reader1.panix.com>

In article <mailman.307.1117585109.18027.python-list at python.org>,
 Carl Friedrich Bolz <cfbolz at gmx.de> wrote:

> John Machin wrote:
> 
> >>Of course, if you *don't* use 'self', you should expect an angly mob
> >>with pitchforks and torches outside your castle.
> >>
> > 
> > Wouldn't an angly mob be carrying fishing rods?
> > 
> 
> Well, I thought they would be carrying pitchfolks and tolches.

You sure that's not perchforks?


From peter at engcorp.com  Wed May 11 14:45:30 2005
From: peter at engcorp.com (Peter Hansen)
Date: Wed, 11 May 2005 14:45:30 -0400
Subject: win32com and ADO
In-Reply-To: <1115833669.142021.294080@g44g2000cwa.googlegroups.com>
References: <1115833669.142021.294080@g44g2000cwa.googlegroups.com>
Message-ID: <6Pidnf5ZQfVlzx_fRVn-pg@powergate.ca>

Chris Curvey wrote:
> I'm having one of those weeks.
> 
> I have this pattern all over my code.
> 
> result = conn.execute("select * from foo")
> 
> while not result.EOF:
>     doSomething()
>     result.MoveNext()
> 
> So recently I got around to running makepy on all of the Microsoft
> ActiveX Data Objects, and now every call to that pattern is returning:
> 
> 'tuple' object has no attribute EOF
> 
> can anyone tell me how I'm supposed to be using EOF?

There are case sensitivity differences with and without makepy.  I think 
after makepy you have to respect the case of all names, so check for Eof 
or eof or something.

> can anyone point me to the file that has the function lists?
> 
> can anyone tell me how to undo what I've done?

Remove the files created by makepy.  I forget where they exist but 
they're not hard to find (check the makepy source if nothing else).

-Peter


From alexl at neurokode.com  Sun May 15 02:12:32 2005
From: alexl at neurokode.com (Alex)
Date: Sun, 15 May 2005 02:12:32 -0400
Subject: In search of prothon source
Message-ID: <4286E850.40803@neurokode.com>

Since the DNS servers hosting prothon.org have stopped responding, the 
sole source of the source of prothon online that I can find has become 
inaccessable.  I was wondering if anyone subscribed has a copy of the 
source for the last C version of prothon, and would be kind enough to 
post a copy online.

Thanks,

Alex


From tiissa at nonfree.fr  Wed May 18 17:10:32 2005
From: tiissa at nonfree.fr (tiissa)
Date: Wed, 18 May 2005 23:10:32 +0200
Subject: Markov chain with extras?
In-Reply-To: <1116442387.496825.224140@g49g2000cwa.googlegroups.com>
References: <1116278880.976106.191780@o13g2000cwo.googlegroups.com>
	<1116283144.051195.193370@g44g2000cwa.googlegroups.com>
	<1116333014.950383.310040@g44g2000cwa.googlegroups.com>
	<428a49bb$0$31079$626a14ce@news.free.fr>
	<1116442387.496825.224140@g49g2000cwa.googlegroups.com>
Message-ID: <428baf44$0$22999$636a15ce@news.free.fr>

temp at mclift.fsnet.co.uk wrote:
> I want to use it for music. So given list 1 (melody), list 2 (chords)
> could be generated by a Markov chain. Also, given the chords the melody
> could be generated again by a chain.

So, at each time step you want:
  - chord(t) given melody(t-1), chord(t-1) and chord(t-2);
  - melody(t) given melody(t-1) and chord(t).
(or the other way round)

Is that correct?
If so, one could write:

#### hmm2.py
from random import random

def decision(p):
     """Return a single value according to a probability distribution."""
     # trivial due to our binary variables
     return (random()>p) and 1 or 0

def ct_given_mt1_ct1_ct2(mt1,ct1,ct2):
     """Chord given past melody and chords."""
     p0=0.5*ct1*ct2+0.25*ct1+0.125*ct2+0.0625
     return mt1 and p0 or 1-p0

def mt_given_mt1_ct(mt1,ct):
     """Melody given past melody and present chord."""
     return 0.1+0.5*mt1+0.3*ct

def timestep(chord,melody):
     """Chose next chord and melody."""
     chord.append(decision(
         ct_given_mt1_ct1_ct2(melody[-1],chord[-1],chord[-2])))
     melody.append(decision(mt_given_mt1_ct(melody[-1],chord[-1])))

chord=[0,1]
melody=[0]

for i in range(20):
     timestep(chord,melody)

print "Chord:\t%s"%''.join(map(str,chord[2:]))
print "Melody:\t%s"%''.join(map(str,melody[1:]))
####

This generates some 0-1 string according to the above conditional 
distributions.
What's needed there is to have proper variables for melody and chord 
with proper domains (instead of only binary values) and proper 
probability distributions (and proper decision method also although a 
draw is fair enough).

Usually, specifying your distributions is the hard part (some people 
actually cheat by having their programs learn these distributions ;)).

> I haven't had time to play around with your code and as I've only been
> studying python for about six months I don't quite understand what's
> going on. This might already do what I want, I just need to think in
> terms of notes and chords.

Doing Bayesian stuff myself, I'd give mathematical expressions to what I 
want. Then implementation follows. But I wouldn't rush into my favorite 
editor/python shell before having written some nice equations down. ;)




From cyril.bazin at gmail.com  Sun May 29 08:13:47 2005
From: cyril.bazin at gmail.com (Cyril BAZIN)
Date: Sun, 29 May 2005 14:13:47 +0200
Subject: Is there a better way of doing this?
In-Reply-To: <d79re2$sgg$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
References: <d79re2$sgg$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
Message-ID: <a10b8d620505290513e8a95fa@mail.gmail.com>

Hi,

I don't know very well what you want to do, but if you want to parse c++, 
take a look at "GCC-XML python" (http://www.gccxml.org) and the python 
binding (http://pygccxml.sourceforge.net/). These tools translate c++ code 
to XML. Then, you can parse xml with your favorite tools and find the 
namespaces for example...

Your code don't seem very "pythonic", and it seems there is a bug... For 
example what's append if a comment contains a '}' inside a namesapce? (or a 
string contains a '{' ? 

I think you should better use most appropriate tools to do this kind of 
jobs...

Cyril


On 5/28/05, Michael <slick_mick_00 at hotmail.com> wrote:
> 
> Hi,
> I'm fairly new at Python, and have the following code that works but isn't
> very concise, is there a better way of writing it?? It seems much more
> lengthy than python code i have read..... :-)
> (takes a C++ block and extracts the namespaces from it)
> 
> 
> 
> def ExtractNamespaces(data):
> print("Extracting Namespaces")
> p = re.compile( 'namespace (?P<name>[\w]*)[\n\t ]*{')
> 
> subNamespaces = []
> 
> newNS = p.search(data)
> while( newNS ):
> print "\t" + newNS.group("name")
> 
> OPCount = 1
> Offset = newNS.end()
> while(OPCount > 0):
> if( data[Offset] == "}" ):
> OPCount = OPCount -1;
> elif( data[Offset] == "{" ):
> OPCount = OPCount + 1;
> Offset = Offset+1;
> 
> #Extract Data:
> newNSData = data[newNS.end():Offset-1]
> data = data[0:newNS.start()] + data[Offset:]
> newNamespace = [newNS.group("name"), newNSData];
> subNamespaces.append(newNamespace)
> 
> #Perform NewSearch
> newNS = p.search(data)
> return [subNamespaces,data]
> 
> 
> 
> 
> 
> 
> --
> http://mail.python.org/mailman/listinfo/python-list
>
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From roy at panix.com  Mon May 16 19:40:03 2005
From: roy at panix.com (Roy Smith)
Date: Mon, 16 May 2005 19:40:03 -0400
Subject: Python on a public library computer
References: <1116069664.779281.320540@g47g2000cwa.googlegroups.com>
	<87r7g6rbz0.fsf@pobox.com> <42892C88.6090609@open-networks.net>
	<mailman.68.1116286371.8733.python-list@python.org>
Message-ID: <roy-90DC48.19400316052005@reader1.panix.com>

In article <mailman.68.1116286371.8733.python-list at python.org>,
 Chris Lambacher <lambacck at gmail.com> wrote:

> usb key and moveable python.
> http://www.voidspace.org.uk/python/movpy/

That's pretty cool.  Python on a stick!


From vincent at visualtrans.de  Thu May 12 01:20:02 2005
From: vincent at visualtrans.de (vincent wehren)
Date: Thu, 12 May 2005 07:20:02 +0200
Subject: Proxy Design Advice Needed
References: <1115848303.630570.147840@o13g2000cwo.googlegroups.com>
Message-ID: <d5up2d$mqr$1@news6.zwoll1.ov.home.nl>


<nitrogenycs at web.de> schrieb im Newsbeitrag 
news:1115848303.630570.147840 at o13g2000cwo.googlegroups.com...
> Hello,
>
> I need a way to get a notification whenever a variable of an object
> changes. The approach should be non-intrusive so that I can use
> existing objects without modifying them.
> I want to be notified no matter who or what did change the wrapped
> object - even whenever an object internal methods changes the
> variables.
> So I coded the piece of code shown below (just copy and paste it, it's
> ready-to-run).
> It's basically a Proxy class that takes an object and whenever somebody
> tries to access the proxy, the proxy forwards this to the real object.
> Whenever a method of the obj gets called the proxy detects this and the
> operation is performed on the the proxy object so that variable change
> notifications can be send.
> Since I am quite new to Python and the code does not 100% what I want,
> I have the feeling, it's not optimal and that there might be a better
> way to achieve what I want. For example I am not sure if really all
> changes will be catched this way and if the method call re-routed to
> proxy object is not a bit hackish. Second, type(Proxy()) doesn't return
> the same as type(WrappedObj()). The proxy should behave identical to
> the wrapped object. Should I do this with metaclasses to get the type
> right or are there better ways? I am not sure if they could fit here or
> not.
> So, what do you think of this code and how should I improve it?
>
> Thanks a lot for your help!
>
> -Matthias

This may be help:

http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/366254

--
Vincent Wehren

>
>
> Code (just copy and pasts and it should run):
>
> import inspect, new, sys
>
> class Proxy(object):
>    def __init__(self, wrappedObj):
>        # need to call object here to save objs to our own dict
>        object.__setattr__(self,'_wrappedObj',wrappedObj)
>        object.__setattr__(self,'_observers',{})
>
>    def __getattribute__(self, name):
>        # if attribute of proxy obj itself was queried return that
> value
>        if name in ['_wrappedObj','_observers','Subscribe','Notify']:
>            return object.__getattribute__(self, name)
>        # otherwise get var from the wrapped object
>        attr = getattr( object.__getattribute__(self, '_wrappedObj'),
> name )
>        # make method use this proxy object instead of wrapped one to
> catch updates
>        if inspect.ismethod( attr ):
>            return new.instancemethod( attr.im_func, self,
> attr.im_class )
>        else:
>            return attr
>
>    def __setattr__(self, name, value):
>        # sets attribute of the wrapped value
>        setattr(object.__getattribute__(self,'_wrappedObj'), name,
> value)
>        # notify me of change
>        object.__getattribute__(self,'Notify')('Changed',name, value)
>
>    # Adds an observer
>    def Subscribe(self, function, event = ''):
>        self._observers.setdefault(event,[]).append(function)
>
>    # Notifies all observers
>    def Notify(self, event = '', *args):
>        for observer in self._observers.get(event, []):
>            observer(*args)
>
>
> class TestObj(object):
>    classVar = 'cv'
>    def __init__(self):
>        self.spam = '1'
>
>    def method(self):
>        self.spam = '2'
>
> # create a proxy
> p = Proxy(TestObj())
>
> # print some info of it
> print 'Proxy: %s ' % p
> print 'Class of proxy: %s' % p.__class__
> print 'Type of proxy: %s  <--- this sucks' % type(p)
> print 'Dir of proxy: %s' % dir(p)
>
> # enable watching changes
> p.Subscribe(lambda name, var: sys.stdout.write('%s was changed and is
> now %s\n' % (name,var) ) ,'Changed')
>
> # change some stuff
> p.method()
> p.cv = 'new cv'
> p.spam = 1
> p.func = lambda x: x-1
> print p.func(2)
> 




From duncan.booth at invalid.invalid  Fri May 27 08:22:19 2005
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 27 May 2005 12:22:19 GMT
Subject: Incrementing letters
References: <d770dr$7lu$1@nwrdmz03.dmz.ncs.ea.ibs-infra.bt.com>
Message-ID: <Xns966388056EE46duncanbooth@127.0.0.1>

Michael wrote:

> Hi,
> I've got a string s, and i want to shift all the letters up by one, eg
> a->b, b->c ........ z->a
> In c++ i can do this quite simply with
> 
> if(C == 'z') C='a';
> else C++;
> 
> but i can't work out how to do this this in python??

>>> import string
>>> upone = string.maketrans(
    'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ',
    'bcdefghijklmnopqrstuvwxyzaBCDEFGHIJKLMNOPQRSTUVWXYZA')
>>> string.translate("I've got a string s....", upone)
"J'wf hpu b tusjoh t...."
>>> 

Note the difference though: the Python code does what you said you wanted, 
whereas your sample code corrupts punctuation.


From peter at engcorp.com  Wed May 11 09:06:38 2005
From: peter at engcorp.com (Peter Hansen)
Date: Wed, 11 May 2005 09:06:38 -0400
Subject: Encryption with Python?
In-Reply-To: <mailman.326.1115784676.29826.python-list@python.org>
References: <1115324411.952821.150780@o13g2000cwo.googlegroups.com><001301c552db$dd19d3e0$0201a8c0@mcuf7>	<d5i0as$ejd$1@sea.gmane.org><009901c552fb$220132e0$0201a8c0@mcuf7>	<d5ier2$hqa$1@sea.gmane.org><mailman.213.1115652248.29826.python-list@python.org><7x8y2oyyhf.fsf@ruckus.brouhaha.com><mailman.234.1115676887.29826.python-list@python.org>	<7xvf5sqa3j.fsf@ruckus.brouhaha.com>	<mailman.314.1115758730.29826.python-list@python.org>	<5amdnbPrL_uT_BzfRVn-tQ@powergate.ca>
	<mailman.326.1115784676.29826.python-list@python.org>
Message-ID: <-eednXIDvqh9nh_fRVn-rg@powergate.ca>

Robert Kern wrote:
> Peter Hansen wrote:
> 
>> Back to Paul's question then: why use an unreliable and 
>> probably-useless-for-all-but-spawning-lengthy-but-educational-threads 
>> encryption method when there are relatively reliable and, uh, less 
>> discussed and non-edifying, uh... well, you get the picture. ;-)
> 
> Well, I'd say ARCFOUR has been discussed a hell of a lot more than what 
> this thread ever mustered up. I also submit that implementing ARCFOUR or 
> studying p3.py would be a hell of a lot more educational than posting a 
> lousy algorithm, calling it unbreakable, and responding to criticisms 
> with "I don't understand so you must be wrong."
> 
> Education is a process one must engage in. You don't just step in it.

The education to which I was referring was that which _most_ of us just 
received by reading Paul's and your replies, not from anything in the 
OP's postings.  ;-)

-Peter


From max at alcyone.com  Mon May  9 02:00:37 2005
From: max at alcyone.com (Erik Max Francis)
Date: Sun, 08 May 2005 23:00:37 -0700
Subject: Fredrik Lundh
In-Reply-To: <h9qdneSvU71kZuPfRVn-rw@comcast.com>
References: <mailman.139.1115189526.6583.python-list@python.org><maednQfrx_iwL-XfRVn-hA@powergate.ca>	<Av-dnbF5u_SOpOffRVn-vQ@comcast.com>	<mailman.66.1115324909.29826.python-list@python.org>	<k42dnWFaUMRQeePfRVn-pg@comcast.com>
	<mailman.188.1115614698.29826.python-list@python.org>
	<h9qdneSvU71kZuPfRVn-rw@comcast.com>
Message-ID: <ctydncTn9KMbYePfRVn-vg@speakeasy.net>

D H wrote:

> Yet again someone bitches about a thread right after they hypocritically 
> throw their own little darts into the mix.

No one cares.  Please take it elsewhere.


-- 
Erik Max Francis && max at alcyone.com && http://www.alcyone.com/max/
San Jose, CA, USA && 37 20 N 121 53 W && AIM erikmaxfrancis
   There's this perfect girl / Living inside the shell
   -- Lamya


From fredrik at pythonware.com  Wed May 11 14:21:37 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Wed, 11 May 2005 20:21:37 +0200
Subject: Need a little parse help
References: <mailman.321.1115775576.29826.python-list@python.org>
	<obGdnRflvfg95RzfRVn-3g@powergate.ca>
Message-ID: <d5ti1a$emk$1@sea.gmane.org>

Peter Hansen wrote:

> > Remember, finalisers are not called when Python exits. So if you don't
> > explicitly close the file you are *writing* to, it may not be flushed
> > before being closed (by the OS because the process no longer exists).
>
> Ouch... I'd forgotten/never heard that I guess.  If that's true and all
> there is to the matter, I would think we'd all have encountered numerous
> times when our output files were not properly written.  Yet I've never
> encountered this situation myself, nor heard of anyone else ever having
> trouble as a result of it.  What gives?

that's probably because finalizers *are* called when Python exits.

$ python2.4
>>> f = open("out", "w")
>>> f.write(100000*"x")
>>> import os
>>> os._exit(1)
$ ls -l out
-rw-rw-r--    1 fredrik  fredrik     98304 May 11 20:18 out
$ rm out
$ python2.4
>>> f = open("out", "w")
>>> f.write(100000*"x")
>>> ^D
$ ls -l out
-rw-rw-r--    1 fredrik  fredrik    100000 May 11 20:19 out

</F>





From steven.bethard at gmail.com  Sat May 14 11:13:17 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Sat, 14 May 2005 09:13:17 -0600
Subject: Multiple "cmp"s chained one after another
In-Reply-To: <mailman.62.1116074866.29328.python-list@python.org>
References: <d64io9$s6o$05$1@news.t-online.com>
	<mailman.62.1116074866.29328.python-list@python.org>
Message-ID: <y5edne3urKcSiBvfRVn-1A@comcast.com>

Robert Kern wrote:
> I find that using the "key" argument to sort is much nicer than "cmp" 
> for these tasks.
> 
> In [5]:L = [datetime.date(2005,5,2), datetime.date(1984,12,15), 
> datetime.date(1954,1,1)]
> 
> In [7]:L.sort(key=lambda x: (x.month, x.day))
> 
> In [8]:L
> Out[8]:
> [datetime.date(1954, 1, 1),
>  datetime.date(2005, 5, 2),
>  datetime.date(1984, 12, 15)]

Yes, definitely.  Also worth noting in Robert Kern's solution is that 
instead of writing:

     def mycmp(d1, d2):
         return cmp(d1.month,d2.month) or cmp(d1.day,d2.day)

you can write:

     def mycmp(d1, d2):
         return cmp((d1.month, d1.day), (d2.month, d2.day))

or if you're using the key= argument (like you probably should):

     def mykey(d):
         return (d.month, d.day)

The point here is that rather than chaining cmp() calls with ors, you 
should just use a tuple -- the standard comparison order in tuples is 
exactly what you're looking for.

STeVe


From xah at xahlee.org  Fri May 13 04:14:49 2005
From: xah at xahlee.org (Xah Lee)
Date: 13 May 2005 01:14:49 -0700
Subject: New Python regex Doc
In-Reply-To: <mailman.155.1115511845.29826.python-list@python.org>
References: <1113301533.054410.203710@z14g2000cwz.googlegroups.com>
	<mailman.1813.1113355346.1799.python-list@python.org>
	<1113856843.023012.165500@l41g2000cwc.googlegroups.com>
	<1113908069.264676.207090@g14g2000cwa.googlegroups.com>
	<1115328523.852744.110390@f14g2000cwb.googlegroups.com>
	<1115423751.016177.250650@o13g2000cwo.googlegroups.com>
	<1115444726.627426.172260@g14g2000cwa.googlegroups.com>
	<1115508491.462229.294020@o13g2000cwo.googlegroups.com>
	<mailman.155.1115511845.29826.python-list@python.org>
Message-ID: <1115972089.922875.108380@g14g2000cwa.googlegroups.com>

> I think you will continue to have
> difficulty getting respect on this
> matter as long as you show disrespect
> to those who have come before you.
> ...

Dear Ron Adam and other good people,

I respect people and I respect truth. And, the priority is truth first.

The software community, is one fucked up ball, and in part, because
people respect not people nor truth. They respect their own asses,
euphorimically known as politics and power game, and exhibited and
understood as respecting other people.

the above, as you've seen, can be seen in the behaviors and inactions
in this python group as judged by its posts on the Python doc issue i
raised. (of course there are also posts by good hearted and educated
people)

The documentations in computing industry and The Python doc in
particular, is one gravely fucking incompetent ball. And, execuse me
that most people do not understand this, but it is because people
respects their own asses more than other people or truth as i outlined
above.

The fucked up writings and thinkings in the computing industry is in
part what causes the sorry situation of today's software.

I, am taking my time as time permits to explain this situation little
by little to the computing public, message by message.

As to my criticism and rewrite of Python doc in particular, the Python
community can take it or leave it. If they take it, or if i instigated
any change, they shall give proper credit where credit is due.

-----
To the generic Python community:

go re-read my posts, and this time pay attention:
http://xahlee.org/Periodic_dosage_dir/t2/xlali_skami_cukta.html
http://xahlee.org/perl-python/re-write_notes.html

These writings and my involvement with Python will probably only
increase. It is beneficial for you, either personally or as part of the
Python collective, to behave properly.

 Xah
 xah at xahlee.org
? http://xahlee.org/





Newsgroups: comp.lang.python
From: Ron Adam <r... at ronadam.com> - Find messages by this author
Date: Sat, 07 May 2005 20:23:35 -0400
Local: Sat,May 7 2005 8:23?pm
Subject: Re: New Python regex Doc
Reply |  Reply to Author  | Forward  | Print  | Individual Message  |
Show original  | Report Abuse

Xah Lee wrote:
 > Let me expose one another fu....

Hello Xah,

I think you will continue to have difficulty getting respect on this
 matter as long as you show disrespect to those who have come before
you.

When you refer to the documentation as being f'ing stupid, and other
 disrespectful terms, you are in an indirect, or depending on your
 intent, directly insulting the people who have done their best, as
 *volunteers* in most cases, to provide the existing documentation.

Text is never F'ing, Stupid, or any of the other terms you refer to as
 it being. ?However it can be uninformative, hard to read, confusing,
and
 even plain wrong. ?But it is only text, and does not have a mind of
it's
 own. ?Referring to it as if it does, in such angry tones, reflects
back
 on yourself and gives others a poor impression of you.

At the start, you choose to approach this matter as a personal and
 competitive agenda, ie.. You vs those who came before you. ?Is this
 really the correct way to do this? ?You don't have to insult those
who
 came before you in order to make your case. ?If you do, then maybe
your
 case isn't strong enough. ?But even this is wrong because it isn't a
 competition.

I suppose that if you respectfully offer something even a little better
 it would be respectfully accepted, after due review of course. ?You
will
 probably even get many helpful suggestions along they way because you
 will have created a situation where every one wins.

But by approaching it in the way you are, you make it very hard for
 people to support you, because to do so, they have to take on the role
 of losers in order for you to be a winner.

Just some thoughts, you might consider.

Cheers, and good luck with whatever aproach you decide.



From edreamleo at charter.net  Tue May 24 07:16:08 2005
From: edreamleo at charter.net (Edward K. Ream)
Date: Tue, 24 May 2005 06:16:08 -0500
Subject: ANN: Leo 4.3 final
Message-ID: <J3Eke.10238$eR.5691@fe05.lga>

Leo 4.3 final is now available at http://sourceforge.net/projects/leo/

Leo 4.3 is here after almost five months of work.

The defining features of Leo 4.3:
---------------------------------
1. Leo now stores options in @settings trees, that is, outlines whose 
headline is '@settings'. When opening a .leo file, Leo looks for @settings 
trees not only in the outline being opened but also in various 
leoSettings.leo files. Users can create arbitrarily complex user options 
with @settings trees.

2. The Preferences command temporarily replaces the outline pane with an 
outline showing all the @settings trees in effect. The Preferences command 
also replaces the body pane with a "settings pane". This settings pane 
allows you to change the settings selected in the outline pane using 
standard gui widgets.

3. Leo now stores recent files information in .leoRecentFiles.txt files.

4. Leo's read/write code in leoAtFile.py has been rewritten to support 
user-defined tangling and untangling. This is a major cleanup of Leo's core.

5. Leo now contains an excellent Plugins Manager plugin. This plugin enables 
and disables plugins automatically and tells you everything you need to know 
about each plugin. This plugin also lets you download plugins from Leo's cvs 
site.

6. You can install third-party extensions in Leo's extensions directory. Leo 
will attempt to import such extensions from the extensions directory when 
normal imports fail. The distribution contains Python Mega Widgets in the 
extensions directory.

What people are saying about Leo
--------------------------------
"Another day, another breakthrough using Leo--now I realize Leo is the best 
URL bookmark manager there is. No more bookmarks menus or favorites lists 
inside the browser for me. With the @url directive I can just double click 
on the URL to open it in my browser. Leo lets me arrange the URLs in a 
hierarchy (or multiple hierarchies), attach notes to them, save clippings of 
things I read on the sites. It's sooo much better than anything the browsers 
have built in and it lets me easily use different browsers on different 
platforms and different machines (try that with the browsers' built-in 
bookmark managers)." -- Dan Winkler

"I am an amateur photographer. I use plain old 35mm. film for my pictures. 
Over the weekend, I used Leo to organize my lists of pictures. It is quite 
helpful--I can have separate nodes for pictures I have enlarged, as well as 
pictures I have submitted to our local camera club. Thanks!" -- Rich Reis

"Cloning is pure genius!... Leo's cloning facility, allows me to create 
several views on the CFA course material. My main view follows the 
prescribed study guide. Another view is organized like the textbooks. Yet 
another gives me a glossary of terms. And when I'm done, I'll have some nice 
libraries...I can re-use later in other projects." -- Michael Manti

More quotes at: http://webpages.charter.net/edreamleo/testimonials.html

What makes Leo special?
-----------------------
- Leo's outlines add a new dimension to programming.
- Leo shows you your code and data the way _you_ want to see them.
- Leo extends, completes and simplifies literate programming.
- Leo's script buttons bring scripts to data.

What is Leo?
------------
- A programmer's editor, an outlining editor and a flexible browser.
- A literate programming tool, compatible with noweb and CWEB.
- A data organizer and project manager. Leo provides multiple views
  of projects within a single outline.
- Fully scriptable using Python. Leo saves its files in XML format.
- Portable. leo.py is 100% pure Python.
- Open Software, distributed under the Python License.

Leo requires Python 2.2.1 or above and tcl/tk 8.4 or above.
Leo works on Linux, Windows and MacOs X.

Links:
------
Leo:      http://webpages.charter.net/edreamleo/front.html
Home:     http://sourceforge.net/projects/leo/
Download: http://sourceforge.net/project/showfiles.php?group_id=3458
CVS:      http://sourceforge.net/cvs/?group_id=3458
Quotes:   http://webpages.charter.net/edreamleo/testimonials.html

--------------------------------------------------------------------
Edward K. Ream   email:  edreamleo at charter.net
Leo: Literate Editor with Outlines
Leo: http://webpages.charter.net/edreamleo/front.html
--------------------------------------------------------------------




From dotpyFE at gmail.com  Tue May 17 17:02:27 2005
From: dotpyFE at gmail.com (Lucas Raab)
Date: Tue, 17 May 2005 21:02:27 GMT
Subject: Python on a public library computer
In-Reply-To: <1116069664.779281.320540@g47g2000cwa.googlegroups.com>
References: <1116069664.779281.320540@g47g2000cwa.googlegroups.com>
Message-ID: <DZsie.3667$uR4.1876@newsread2.news.atl.earthlink.net>

anton.vredegoor at gmail.com wrote:
> Here's my situation:
> 
> I'm typing this in a public library on a computer with OS windows 2000
> server. I can run Internet explorer, word, excel and powerpoint, that's
> it. Maybe java, but it seems to be flaky.
> 
> I want to run python scripts from this computer. At home I have a
> multi-computer network (from better times) but no internet access
> anymore, I could use this to try out solutions. I also have access to a
> friends computer which has internet connection, but I can't visit his
> place all the time. He's away often but he's got a life of his own :-)
> 
> So I'm thinking of running some kind of python webserver from a
> dedicated computer over there (visualizing some cherrypy webpage based
> interpreter at the moment) but I would like to know other options.
> However it would have to run from a webpage here ...
> 
> For example I would like to run a python script over there (e.g.
> getting news from a usenet server) which puts the output in a zipfile
> on another webpage so that I can fetch it here with the Internet
> Explorer.
> 
> There seems to be no traffic load problem since there would be only a
> few users (but it could become popular fast?). Also I'm worried about
> security issues, but not so much that I would consider installing some
> large scale payware professional solution.
> 
> Let me know what you think, unless it costs money. On the other hand
> money would solve this problem so if I can do something to get that it
> would be even better.
> 
> Anton
> 
> [the things they make you go through ...]
> 

Hehehe. If it's possible you could run Knoppix from a CD. Or Damn Small 
Linux from a memory key.

-- 
--------------------------
Lucas Raab
lvraab"@"earthlink.net
dotpyFE"@"gmail.com
AIM:	Phoenix11890
MSN:	dotpyfe "@" gmail.com
IRC:	lvraab
ICQ:	324767918
Yahoo:	Phoenix11890


From jjl at pobox.com  Mon May 30 10:20:31 2005
From: jjl at pobox.com (John J. Lee)
Date: 30 May 2005 14:20:31 +0000
Subject: Software licenses and releasing Python programs for review
References: <1117245014.218831.317750@g14g2000cwa.googlegroups.com>
	<mailman.216.1117291885.18027.python-list@python.org>
	<1117324124.350474.136600@g14g2000cwa.googlegroups.com>
	<pan.2005.05.29.12.23.39.107067@REMOVETHIScyber.com.au>
	<1117392779.263376.236200@o13g2000cwo.googlegroups.com>
Message-ID: <87ekbore1c.fsf@pobox.com>

"poisondart" <poisondart985 at gmail.com> writes:
[...]
> I plan to release my programs for academic and pedagogical purposes.
> The knowledge contained in these programs is the same knowledge that
> people use to speak a language--did you buy a copy of the English
> language when you decided to learn it?
> 
> This is why I feel that it would not make sense for me to sell my
> programs for profit.

I'm a little curious about your position.

Though code encodes knowledge (hence the word, of course :-), the
system of concepts embodied in your code is not the same thing as the
code itself.  Right?

So, firstly, I don't follow your argument there: how does it follow
from the fact that scientific and mathematical knowledge should not be
treated by the law as - in some sense - property (a moot point of
course, though I lean towards your view) that it doesn't 'make sense'
(scare quotes because I'm not sure of your precise meaning) to sell
your software for profit?

Secondly, do you think it's a bad thing for anybody to sell software
that makes use of the *concepts* in your code (provided that the use
of those concepts is not restricted by financial or other legal
means)?  If so, why?


John


From trentm at ActiveState.com  Mon May 16 12:51:20 2005
From: trentm at ActiveState.com (Trent Mick)
Date: Mon, 16 May 2005 09:51:20 -0700
Subject: command string good in subprocess.Popen(string) fails in
	process.Process(string)
In-Reply-To: <1116249032.27141.624.camel@dulcevida>
References: <1116249032.27141.624.camel@dulcevida>
Message-ID: <20050516165119.GA20874@ActiveState.com>

[Earl Eiland wrote]
> 
> The command string consists of "filename.exe  instruction1 instruction2
> ..."  It works in subprocess, but in process, returns the error "can't
> find the file instruction1".
> 
> How do I pass command line instructions in process.Process?  I tried a
> list ['filename.exe', 'instruction1 instruction2 ...'] with the same
> result.
> 
> If you're wondering why I'm switching, it's because I'm working with a
> poorly behaved 3rd party program that causes a severe memory leak, and I
> need the process modules timed "wait(n)" method (or write my own).

Can you post a little snippet and show the exact traceback you are
getting? I suspect the problem might stem from a stupid buglet in the
latest process.py available from my starship pages because I've
neglected updating it in a long while.

Cheers,
Trent

-- 
Trent Mick
TrentM at ActiveState.com


From harlinseritt at yahoo.com  Sun May  1 08:07:27 2005
From: harlinseritt at yahoo.com (Harlin Seritt)
Date: 1 May 2005 05:07:27 -0700
Subject: Killing process
In-Reply-To: <1IidnevlD6E2AO7fRVn-qg@powergate.ca>
References: <1114823011.063614.27150@l41g2000cwc.googlegroups.com>
	<k8KdnRntjOUZQu_fRVn-qQ@powergate.ca>
	<1114832689.316806.136670@l41g2000cwc.googlegroups.com>
	<1IidnevlD6E2AO7fRVn-qg@powergate.ca>
Message-ID: <1114949247.586471.313870@o13g2000cwo.googlegroups.com>

I actually tried mapping the PID to an integer value and it still
didn't work. At any rate, I found another way to do it. Thanks anyways.



From daha at best.com  Mon May  9 22:51:43 2005
From: daha at best.com (David Harrison)
Date: Mon, 9 May 2005 19:51:43 -0700
Subject: Question: Threading and embedding python in an application
Message-ID: <2005050919514316807%daha@bestcom>


I am working on an application on Mac OS X that calls out
to python via PyImport_ImportModule().  I find that if
the imported module creates and starts a python thread,
the thread seems to be killed when the import of
the module is complete.   Is this expected?  Does
python have to be in control to allow threads to run?
Would it be better to arrange things such that the
file is processed using PyRun_SimpleFile?

		David S. Harrison
		(daha at best.com)




From thomas at eforms.co.nz  Sun May 22 19:56:54 2005
From: thomas at eforms.co.nz (Thomas Thomas)
Date: Mon, 23 May 2005 11:56:54 +1200
Subject: store data for search using python
Message-ID: <200505231156.55231.thomas@eforms.co.nz>

Hi all,

I have files & text associated with that files as data. what will be the best 
way to store them(like xml..), So that i can search in the text and get a 
list of files as result from a python application..

what kind of factors do i have to take into account if 
my prime concern is effective search.

Another suggestion was btree.. any more tips on that

regards
Thomas




From kipster-t at earthlink.net  Thu May 12 15:51:40 2005
From: kipster-t at earthlink.net (Kip Lehman)
Date: Thu, 12 May 2005 19:51:40 GMT
Subject: exPyCrypto confusion
Message-ID: <kipste-050512135103-140@outpost.bogon.tv>


The example[2,3,4].py files in the ezPyCrypto are instructive.

Using the techniques in those files and modifying your test script,
the desired behavior is attainable.

Two items had to be changed.  
Instead of k.exportKey(), you have to use k.exportKeyPrivate(). 
On the other end instead of ke.decString() you have to use the 
decStringFromAscii() method.

----------------amended script------------------------------
import os
import ezPyCrypto

#######################################################################

KEY_FILE = '/Users/scott/pyprogs/the_key.txt'

#######################################################################

msg = 'Meeting delayed 30 hours'
print "plaintext msg: %s" % msg
print '-' * 48
k = ezPyCrypto.key(512)

cipher = k.encStringToAscii(msg)
print cipher
print '-' * 48

decoded1 = k.decStringFromAscii(cipher)
print "recovered msg: %s" % decoded1

print '-' * 48, '\n'

# So far so good. encrypted and decrypted as expected.
# Now try to put the key in a file for transport on eg a USB drive.

pubPrivKey = k.exportKeyPrivate()
print "pubPrivKey:\n%s" % pubPrivKey
f = open(TEST_KEY_FILE, 'w')
f.write(pubPrivKey)
f.close()
print "pubPrivKey written to file -> %s" % os.path.basename(KEY_FILE)
print '-' * 48, '\n'

# Now get string representation of pubPrivKey and use it to create
# a new key instance (nk) that can be used to decode the cipher

f = open(TEST_KEY_FILE, 'r')
inPubPrivKey = f.read()
f.close()

# create a new key object and auto-import private key
nk = ezPyCrypto.key(inPubPrivKey)
print "pubPrivKey read in from file -> %s, new key instance created" % \
      os.path.basename(KEY_FILE)
decoded2 = nk.decStringFromAscii(cipher)
print "recovered msg using pubPrivKey: %s" % decoded2

----------------end script------------------------------

Happy en/de crypting...

Kip Lehman
kipster <dash> t <at> earthlink <dot> net



--
Still waiting for PanAm, Amtrack and the USPS to deliver my .sig



From darkbard at extending-php.net  Thu May 26 04:33:44 2005
From: darkbard at extending-php.net (Gabriele *Darkbard* Farina)
Date: Thu, 26 May 2005 08:33:44 GMT
Subject: compiling python code
Message-ID: <IRfle.1443618$35.53839136@news4.tin.it>

Hi,

I have a python file inside a zip file. I'd like to compile it and add 
the resulting .pyc file into the zip. I tryed reading the source and 
compiling it using compile(), but I don't know how to write .pyc file. 
Can someone give me some help?

bye,
gabriele


From scott.manton at gmail.com  Thu May  5 12:07:16 2005
From: scott.manton at gmail.com (scott.manton at gmail.com)
Date: 5 May 2005 09:07:16 -0700
Subject: Does the Python/C interface support Queue objects?
Message-ID: <1115309235.972498.155650@f14g2000cwb.googlegroups.com>

I'm a new user of the Python C interface.  I would like to know if it
is possible  to put items on a standard python Queue  object in C, and
pop them from Python.  Does the Python/C interface support Queue
objects?

A little background.  I made a C dll that sets up a thread for
collecting data from an NI data aquisition card.  The thread builds a
list and passes the list to to python via a callback, then python puts
them in the Queue.   I would prefer to put the data in the Queue from
the C thread for efficiency,  and then monitor the Queue from python.



From bdesth.quelquechose at free.quelquepart.fr  Thu May 26 16:38:12 2005
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Thu, 26 May 2005 22:38:12 +0200
Subject: __init__() not called automatically
In-Reply-To: <d74rfp$s36$1@panix2.panix.com>
References: <1117081917.760603.82610@z14g2000cwz.googlegroups.com>
	<mailman.121.1117083356.18027.python-list@python.org>
	<4295f081$0$19214$626a14ce@news.free.fr>
	<d74rfp$s36$1@panix2.panix.com>
Message-ID: <42962e84$0$10519$636a15ce@news.free.fr>

Roy Smith a ?crit :
> bruno modulix  <onurb at xiludom.gro> wrote:
> 
>>I've always explicitelly used the (implied) 'this' pseudo-pointer in
>>Java, C++ etc. The wart is in all those languages that don't makes it
>>mandatory IMHO !-)
> 
> 
> And the correlary wart in Python is that the first argument to a
> method is not required to be called "self".  

Well, I would not call this a wart. Because when it's a class method, 
naming the fisrt param 'cls' could seem more appropriate !-)

> The vast majority of
> people use "self", but every once in a great while you run into some
> yahoo who feels this is the right place to express his creativity and
> call it "this", or "obj", or some other obfuscation.

Then every python programmer in its own mind will throw away this code 
with mimics of disgust, and everything is fine.

More seriously, I prefer to have some bozo using this instead of self - 
which I can easily correct if needed - than having to deal with implicit 
this in a whole code base...


From mensanator at aol.com  Wed May 25 21:33:18 2005
From: mensanator at aol.com (mensanator at aol.com)
Date: 25 May 2005 18:33:18 -0700
Subject: Q: "...Learning with Python" ...a property that addition and
	multiplication have...
In-Reply-To: <1117067025.233387.323910@z14g2000cwz.googlegroups.com>
References: <1117067025.233387.323910@z14g2000cwz.googlegroups.com>
Message-ID: <1117071198.590970.229810@g43g2000cwa.googlegroups.com>



jeffbernstein at yahoo.com wrote:
> Greetings.
>
> I'm reading "How to think like a computer scientist: Learning with
> Python" and there's a question regarding string operations. The
> question is, "Can you think of a property that addition and
> multiplication have that string concatenation and repetition do not?"
>
> I thought it was the commutative property but "<string>"*3 is
> equivalent to 3*"<string>". Any ideas?

>>> 3.3*1
3.2999999999999998

>>> 3.3*'1'

Traceback (most recent call last):
  File "<pyshell#11>", line 1, in -toplevel-
    3.3*'1'
TypeError: can't multiply sequence to non-int

> 
> Thanks,
> 
> Jeff



From gijs at globaltrack.com  Mon May 23 06:06:20 2005
From: gijs at globaltrack.com (Gijs Korremans)
Date: Mon, 23 May 2005 12:06:20 +0200
Subject: Com object questions
Message-ID: <200505231011.j4NAAxEZ014470@rrba-146-112-247.telkomadsl.co.za>

Hi,

I'm still figuring out how I can use the win32com for the use of a com object which I think is made in VB

First I've created a file with MakePy
Then I used the following code to init the com object:
	import win32com.client
	Client = win32com.client.Dispatch("ClientModule.Client")

Then, when I want to use a function, for example this one:
	ipaddr = kddClient.GetLocalIPAddress()
I get this error:
	File "C:\Python23\lib\site-packages\win32com\gen_py\0F4570B8-4D39-47CD-84B4-8A424233EEBFx0x1x0.py", line 69, in GetLocalIPAddress
	    return self._ApplyTypes_(11, 1, (36, 0), (), 'GetLocalIPAddress', None,)
	File "C:\Python23\lib\site-packages\win32com\client\__init__.py", line 446, in _ApplyTypes_
	    return self._get_good_object_(self._oleobj_.InvokeTypes(dispid, 0, wFlags, retType, argTypes, *args),user, resultCLSID)
	com_error: (-2147024809, 'The parameter is incorrect.', None, None)
I don't know which parameter is incorrect because the function doesn't need any parameters

and when I try to use a struct for the IP address using the following code:
	ipaddr = win32com.client.Record("IPADDRESS_STRUCT", Client)
I get this message:
	File "C:\Python23\lib\site-packages\win32com\client\__init__.py", line 403, in Record
	    raise ValueError, "The structure '%s' is not defined in module '%s'" % (name, package)
	ValueError: The structure 'IPADDRESS_STRUCT' is not defined in module '<module 'win32com.gen_py.0F4570B8-4D39-47CD-84B4-8A424233EEBFx0x1x0' from 'C:\Python23\lib\site-packages\win32com\gen_py\0F4570B8-4D39-47CD-84B4-8A424233EEBFx0x1x0.pyc'>'
I think this means that there is no struct IPADDRESS_STRUCT defined in the com object but when I'm going to the ComBrowser in PythonWin it is in there.

I'm using python 2.3 with pywin32 build 203

Does anybody know what i'm doing wrong?

Kind regards, 


Gijs

--
This message has been scanned for viruses and
dangerous content by Network Sentry, and is
believed to be clean.
http://www.networksentry.co.za



From simon.brunning at gmail.com  Thu May 26 04:59:55 2005
From: simon.brunning at gmail.com (Simon Brunning)
Date: Thu, 26 May 2005 09:59:55 +0100
Subject: using a com automation object (how do I avoid crash?)
In-Reply-To: <b273c74105052513434dcd7890@mail.gmail.com>
References: <b273c74105052513434dcd7890@mail.gmail.com>
Message-ID: <8c7f10c605052601592c6cc61@mail.gmail.com>

On 5/25/05, James Carroll <mrmaple at gmail.com> wrote:
> I'm trying to call functions on an automation object, and I've run
> makepy to generate a wrapper, and 99% of the calls I make on the
> wrapper work great.
> 
> my question is: Is my [''] * 10  as close as I can come to a variant
> array of pre-allocated empty strings?
> 
> I'm trying to call a function called EnumerateCameras
> 
> m.ShowLiveWindow(True)    <--- this works
> cams = [''] * 10
> m.EnumerateCameras(cams)
> <CRASH!>

Python strings are immutable. If EnumerateCameras is trying to modify
them, who knows *what* might happen...

> Is my [''] * 10  as close as I can come to a variant array of
> pre-allocated empty strings?

Have you looked at ctypes?
(<http://starship.python.net/crew/theller/ctypes/>.) It has a
create_string_buffer function for creating mutable memory blocks, so
you might do somethign like:

cams = list(ctypes.create_string_buffer(256) for _ in range(10))

256 is a wild guess, obviously. ;-)

-- 
Cheers,
Simon B,
simon at brunningonline.net,
http://www.brunningonline.net/simon/blog/


From pixeldust1 at NOSPAMPLEASEhotmail.com  Sat May 21 19:06:44 2005
From: pixeldust1 at NOSPAMPLEASEhotmail.com (PixelDust1)
Date: Sat, 21 May 2005 23:06:44 GMT
Subject: embedded python in c - function
Message-ID: <refv81liltngi6rnfg2kmen8tllhh4n8ct@4ax.com>

Hi guys,

I am pretty new to Python and to embedding it in C.
Here is what I am trying to accomplish:

I have a C program that accepts user input, which can be
a Python script which includes functions defined by the user line by
line as typed in. Let me show the code that I have:

#include "Python.h"


main(int argc, char **argv)
{
	
	
	// Pass argv[0] to the Python interpreter 
	Py_SetProgramName(argv[0]);

	// Initialize the Python interpreter.  Required. 
	Py_Initialize();


	// Define sys.argv.  It is up to the application if you
	// want this; you can also let it undefined (since the Python 
	// code is generally not a main program it has no business
	// touching sys.argv...) 
	PySys_SetArgv(argc, argv);

	PyRun_SimpleString("def fib(n):\n");
	PyRun_SimpleString("\t\ta, b = 0, 1\n");
	PyRun_SimpleString("\t\t\while b < n:n");
	PyRun_SimpleString("\t\tprint b,\n");
	PyRun_SimpleString("\t\t\a, b = b, a+bn");
	PyRun_SimpleString("fib(2000)\n");


	// Exit, cleaning up the interpreter 
	Py_Exit(0);

}

The code gives me the following:

  File "<string>", line 1
    def fib(n):
              ^
SyntaxError: unexpected EOF while parsing
  File "<string>", line 1
    a, b = 0, 1
    ^
SyntaxError: invalid syntax
  File "<string>", line 1
    while b < n:n
    ^
SyntaxError: invalid syntax
  File "<string>", line 1
    print b,
    ^
SyntaxError: invalid syntax
  File "<string>", line 1
    , b = b, a+bn
    ^
SyntaxError: invalid syntax
Traceback (most recent call last):
  File "<string>", line 1, in ?


Could anybody help me out by either pointing to a tutorial that deals
with this type of embedding to point out my mistakes in the code!

Thanks!


From jerf at jerf.org  Mon May  2 17:51:13 2005
From: jerf at jerf.org (Jeremy Bowers)
Date: Mon, 02 May 2005 17:51:13 -0400
Subject: compare two voices (Jeremy Bowers)
References: <mailman.139.1115067916.6582.python-list@python.org>
	<mailman.53.1115069838.6583.python-list@python.org>
Message-ID: <pan.2005.05.02.21.51.13.351076@jerf.org>

On Mon, 02 May 2005 16:37:19 -0500, phil wrote:
> I will defend one statement though.  I have yet to see anything which
> Python would not make a good wrapper for.  Some of the OpenGL pygame stuff
> is very cool.

Alright, you got me :-) I got excessively broad.


From python-url at phaseit.net  Tue May 31 12:08:02 2005
From: python-url at phaseit.net (Simon Brunning)
Date: Tue, 31 May 2005 16:08:02 GMT
Subject: Dr. Dobb's Python-URL! - weekly Python news and links (May 31)
Message-ID: <d7hv2i$frf$1@lairds.us>

QOTW: "Not tested but confident should be an oxymoron for a
programmer." - Peter Otten

(Asked "Is this unsurprising if I look at it right?") -  "Yes; in
general this is true across many domains for a very large number of
referents of "it" :-)" - John Machin

"Strong typing means there [are] a lot of variables whose names are
in ALL CAPS." - Paul Rubin


    One common Python "gotcha" is that default argument values are
    only evaluated once, at function definition time. David Isaac
    wanted to know where the values are stored:
        http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/b09b4e9a78162261
        
    A new era in Python package management?
        http://dirtsimple.org/2005/05/easyinstall-new-era-in-python-package.html
        
    Markus would like to limit his Python script to a fixed percentage of
    CPU usage:
        http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/17f108407779536a
        
    How do you drive-by-wire a car using Python? The Pegasus Team is
    doing some very cool stuff with Python - but I'd want to see their
    test results before going within a mile of the thing.
        http://pegasusbridge.blogspot.com/2005/05/how-do-you-drive-by-wire-car-using.html
        
    Michael Smith wanted to check poker-dice rolls to see if they were a
    full house. Raymond Hettinger gives him general purpose card hand
    detection code:
        http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/1eb194f0547c0c49
        
    George asks for help with a regexp to do quoted string parsing, then
    is shown the light, and uses PyParsing instead.
        http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/7756f2cca64a5def
        
    Fuzzyman tells us how to build a Movable Python CD - that is, Python
    that you can run straight off the CD without any installation - with
    a custom set of packages:
        http://www.voidspace.org.uk/python/weblog/arch_d7_2005_05_21.shtml#e48
        
    Why is Python case-sensitive? Because mathematical notation is,
    apparently:
        http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/6cd17bbab3d8ae80
        
    Mark Williamson has difficulty generating API documentation.  Python
    still needs a javadoc analogue that doesn't import code, it seems:
        <http://www.pagefall.com/musings/2005/05/27/twisted,python,documentation,arrggh!>
        
    Gabor would like to be able to write to a single text file from
    multiple processes simultaneously. This is hard.
        http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/475d065fa7871e63
        
    Eval is unsafe at any speed. Duncan Booth takes on all comers and
    shows that you can do dangerous things with eval regardless of
    attempts to make it safe:
        http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/cbcc21b95af0d9cc
        
    Notable releases:
        Twisted 2.0.1
            http://twistedmatrix.com/
        wxPython 2.6.0.1
            http://wxpython.org/
        IPython 0.6.14
            http://ipython.scipy.org/


========================================================================
Everything Python-related you want is probably one or two clicks away in
these pages:

    Python.org's Python Language Website is the traditional
    center of Pythonia
        http://www.python.org
    Notice especially the master FAQ
        http://www.python.org/doc/FAQ.html

    PythonWare complements the digest you're reading with the
    marvelous daily python url
         http://www.pythonware.com/daily  
    Mygale is a news-gathering webcrawler that specializes in (new)
    World-Wide Web articles related to Python.
         http://www.awaretek.com/nowak/mygale.html 
    While cosmetically similar, Mygale and the Daily Python-URL
    are utterly different in their technologies and generally in
    their results.

    For far, FAR more Python reading than any one mind should
    absorb, much of it quite interesting, several pages index
    much of the universe of Pybloggers.
	http://lowlife.jp/cgi-bin/moin.cgi/PythonProgrammersWeblog
        http://www.planetpython.org/
        http://mechanicalcat.net/pyblagg.html

    comp.lang.python.announce announces new Python software.  Be
    sure to scan this newsgroup weekly.
        http://groups.google.com/groups?oi=djq&as_ugroup=comp.lang.python.announce

    Steve Bethard, Tim Lesher, and Tony Meyer continue the marvelous
    tradition early borne by Andrew Kuchling, Michael Hudson and Brett
    Cannon of intelligently summarizing action on the python-dev mailing
    list once every other week.
	http://www.python.org/dev/summary/

    The Python Package Index catalogues packages.
        http://www.python.org/pypi/

    The somewhat older Vaults of Parnassus ambitiously collects references
    to all sorts of Python resources.
        http://www.vex.net/~x/parnassus/   

    Much of Python's real work takes place on Special-Interest Group
    mailing lists
        http://www.python.org/sigs/

    The Python Business Forum "further[s] the interests of companies
    that base their business on ... Python."
	http://www.python-in-business.org

    Python Success Stories--from air-traffic control to on-line
    match-making--can inspire you or decision-makers to whom you're
    subject with a vision of what the language makes practical.
        http://www.pythonology.com/success

    The Python Software Foundation (PSF) has replaced the Python
    Consortium as an independent nexus of activity.  It has official
    responsibility for Python's development and maintenance. 
        http://www.python.org/psf/
    Among the ways you can support PSF is with a donation.
        http://www.python.org/psf/donate.html

    Kurt B. Kaiser publishes a weekly report on faults and patches.
        http://www.google.com/groups?as_usubject=weekly%20python%20patch
       
    Cetus collects Python hyperlinks.
        http://www.cetus-links.org/oo_python.html

    Python FAQTS
        http://python.faqts.com/

    The Cookbook is a collaborative effort to capture useful and
    interesting recipes.
	http://aspn.activestate.com/ASPN/Cookbook/Python

    Among several Python-oriented RSS/RDF feeds available are
	http://www.python.org/channews.rdf
	http://bootleg-rss.g-blog.net/pythonware_com_daily.pcgi
	http://python.de/backend.php
    For more, see
	http://www.syndic8.com/feedlist.php?ShowMatch=python&ShowStatus=all
    The old Python "To-Do List" now lives principally in a
    SourceForge reincarnation.
        http://sourceforge.net/tracker/?atid=355470&group_id=5470&func=browse
        http://python.sourceforge.net/peps/pep-0042.html
     
    The online Python Journal is posted at pythonjournal.cognizor.com.
    editor at pythonjournal.com and editor at pythonjournal.cognizor.com
    welcome submission of material that helps people's understanding
    of Python use, and offer Web presentation of your work.

    del.icio.us presents an intriguing approach to reference commentary.
    It already aggregates quite a bit of Python intelligence.
        http://del.icio.us/tag/python

    *Py: the Journal of the Python Language*
        http://www.pyzine.com

    Archive probing tricks of the trade:
        http://groups.google.com/groups?oi=djq&as_ugroup=comp.lang.python&num=100
        http://groups.google.com/groups?meta=site%3Dgroups%26group%3Dcomp.lang.python.*

Previous - (U)se the (R)esource, (L)uke! - messages are listed here:
  http://www.ddj.com/topics/pythonurl/ (requires subscription)
  http://groups-beta.google.com/groups?q=python-url+group:comp.lang.python*&start=0&scoring=d&
  http://purl.org/thecliff/python/url.html (dormant)
or
  http://groups.google.com/groups?oi=djq&as_q=+Python-URL!&as_ugroup=comp.lang.python


Suggestions/corrections for next week's posting are always welcome.
E-mail to <Python-URL at phaseit.net> should get through.

To receive a new issue of this posting in e-mail each Monday morning
(approximately), ask <claird at phaseit.net> to subscribe.  Mention
"Python-URL!".


-- The Python-URL! Team--

Dr. Dobb's Journal (http://www.ddj.com) is pleased to participate in and
sponsor the "Python-URL!" project.




From tjreedy at udel.edu  Sat May 14 23:07:16 2005
From: tjreedy at udel.edu (Terry Reedy)
Date: Sat, 14 May 2005 23:07:16 -0400
Subject: converting a set into a sorted list
References: <1116120701.520116.315230@f14g2000cwb.googlegroups.com>
Message-ID: <d66ecn$h52$1@sea.gmane.org>


"MackS" <mackstevenson at hotmail.com> wrote in message 
news:1116120701.520116.315230 at f14g2000cwb.googlegroups.com...
> Can I somehow avoid doing this in two stages? Can I somehow avoid first
> creating a long list only to immediately sort it afterwards?

Yes, you could interatively extract and append the min of the set 
(selection sort), but this would be O(n**2), like bubble or insert sort, 
instead of the O(n*logn) of make list and sort.  You can do the latter in 
two statements without append:
 display = list(big_set)
 display.sort().

As Robert noted, this can be condensed to one using sorted, but that will 
do the same as the two lines above.

Terry J. Reedy





From jstroud at mbi.ucla.edu  Wed May  4 13:22:32 2005
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Wed, 4 May 2005 10:22:32 -0700
Subject: How to write this regular expression?
In-Reply-To: <311b5ce105050402343dab03bf@mail.gmail.com>
References: <mailman.139.1115189526.6583.python-list@python.org>
	<1115195508.025605.53690@o13g2000cwo.googlegroups.com>
	<311b5ce105050402343dab03bf@mail.gmail.com>
Message-ID: <200505041022.32481.jstroud@mbi.ucla.edu>

On Wednesday 04 May 2005 02:34 am, so sayeth could ildg:
> I saw someone complained that a question is too lengthy,
> and I saw some questions were complained to be unclear,
> but I never saw someone waste his time to judge if a question is a
> homework. If this is natural, I'll pay attention from now on.
>
> On 4 May 2005 01:31:48 -0700, George Sakkis <gsakkis at rutgers.edu> wrote:
> > This newsgroup is in general very helpful, but there are some
> > exceptions; one of them is when the problem appears blatantly to be a
> > homework. Perhaps if you showed that you worked on it and made some
> > progress, but it's not quite right, someone may help you.

I think by participating in this list, most of the members have felt that they 
have agreed to the following unofficial terms and conditions of use:

http://www.catb.org/~esr/faqs/smart-questions.html

The interesting thing is that those who follow the letter most strictly are 
usually the best ones to ask. Moreover, most members of this list are usually 
looking for any excuse to compose a regular expression. In fact, they 
probably come up with an answer before they make any assessments about 
homework.

> I can tell you that this is not any homework at all,
> I think it by myself.

In that case, your question is free game:


>>> r = re.compile(r"_[0-3]\d?(_\d\d?){0,2}")
>>>
>>> r.search('_29_700_700000')
<_sre.SRE_Match object at 0x402ccba0>
>>> r.search('_29_50')
<_sre.SRE_Match object at 0x402f8820>
>>> r.search('_5_33')
<_sre.SRE_Match object at 0x402ccba0>
>>> r.search('_500')
>>>

James

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/


From sarapythonlist at yahoo.com  Tue May 10 08:25:57 2005
From: sarapythonlist at yahoo.com (Sara Khalatbari)
Date: Tue, 10 May 2005 05:25:57 -0700 (PDT)
Subject: The first programming riddle on the net. Python-challenge
Message-ID: <20050510122557.36263.qmail@web61102.mail.yahoo.com>

Hey guys!
Thanks for helping me find time&date.

Have you seen this?
This is the first programming riddle on the net with
20 levels! 

http://www.pythonchallenge.com/

__________________________________________________
Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around 
http://mail.yahoo.com 


From benji at benjiyork.com  Mon May 30 21:28:28 2005
From: benji at benjiyork.com (Benji York)
Date: Mon, 30 May 2005 21:28:28 -0400
Subject: How to run functions in the background?
In-Reply-To: <429BB76C.6010801@mailshack.com>
References: <429B3A9E.9060201@mailshack.com> <d7fnj2$sh3$1@sea.gmane.org>
	<429BB76C.6010801@mailshack.com>
Message-ID: <429BBDBC.9070304@benjiyork.com>

Ognjen Bezanov wrote:
> Is there anywhere where I can find out about queues, for people who know
> python but have not had a lot of experience with threaded programs? Cheers

FOLDOC to the rescue:
http://foldoc.doc.ic.ac.uk/foldoc/foldoc.cgi?queue
--
Benji York


From fredrik at pythonware.com  Mon May  9 09:48:14 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Mon, 9 May 2005 15:48:14 +0200
Subject: replace string patern with different value
References: <1115645021.903836.262590@z14g2000cwz.googlegroups.com><797fe3d40505090632612801e8@mail.gmail.com>
	<797fe3d405050906321809bd80@mail.gmail.com>
Message-ID: <d5np97$93h$1@sea.gmane.org>

Bill Mill wrote:

>>>> for rep in L:
> ...     source = source.replace(token, rep, 1)

here's another way to do it:

>>> L = ["11", "22", "33"]
>>> S = "xyzzy text we've got xyzzy text xyzzy yeah yeah yeah"
>>> L.reverse()
>>> re.sub("xyzzy", lambda x: L.pop(), S)
"11 text we've got 22 text 33 yeah yeah yeah"

or, less destructive:

>>> L = ["11", "22", "33"]
>>> S = "xyzzy text we've got xyzzy text xyzzy yeah yeah yeah"
>>> re.sub("xyzzy", lambda x, pop=iter(L).next: pop(), S)

(a few more iterations of this idea and we're in python riddle country...)

</F> 





From mwm at mired.org  Tue May  3 22:32:54 2005
From: mwm at mired.org (Mike Meyer)
Date: Tue, 03 May 2005 21:32:54 -0500
Subject: control precision for str(obj) output?
References: <d598rq$8fj$1@joe.rice.edu>
Message-ID: <864qdj90vd.fsf@guru.mired.org>

Bo Peng <bpeng at rice.edu> writes:

> Dear list,
>
> I have enjoyed the convenience to output any object with str(obj) for
> a while. However, I get long output for things like str([0.0002]) in
> my output (which bothers my users more than me though). I also do not
> understand why the following is happening:
>
>  >>> str([0.0002])
> '[0.00020000000000000001]'
>  >>> str(0.0002)
> '0.0002'
>
> Is there any way to fix this, other than checking the type of
> everything and output with %.4f?

Two things are going on here.

1) str is returning a "nicely printable" version of the object. For
floats, that means providing a precision so they behave as naive users
expect. repr, on the other hand, is returning a printable
representation of the object - which in the case of floats means the
true value of the float, not it's "nice" approximation.

2) str on a list uses repr to turn all the elements in the list to
strings for printing. This is pretty much required for strings to be
recognizable as such in the output.

And no, there's no way to control what repr is going to do. You could
subclass list and provide an str method that checks for floats, and
calls str on them instead of repr (probably better than using %.4f on
them all), but you can't really fix list.

Someone want to tell me the procedure for submitting FAQ entries, so I
can do that for this?

    Thanks,
    <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From kent37 at tds.net  Wed May  4 07:43:43 2005
From: kent37 at tds.net (Kent Johnson)
Date: Wed, 04 May 2005 07:43:43 -0400
Subject: Regular Expression tools?
In-Reply-To: <mailman.135.1115173581.6583.python-list@python.org>
References: <mailman.135.1115173581.6583.python-list@python.org>
Message-ID: <4278b0e4$1_2@newspeer2.tds.net>

Lee Cullens wrote:
> Been here before, but can't remember what I used and anyway that was a 
> PC platform.
> 
> So, if you use a Regular Expression tool (PCRE standard) for Python 
> programming and your development platform is Mac OS X, would you please 
> help narrow down the search for me.  All I seem to be finding are other 
> platforms and/or not standalone.

Maybe you are looking for RegexPlor:
http://python.net/~gherman/RegexPlor.html

Kent


From fredrik at pythonware.com  Fri May 20 08:45:20 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Fri, 20 May 2005 14:45:20 +0200
Subject: PIL and line drawing
References: <zleje.794472$w62.202433@bgtnsc05-news.ops.worldnet.att.net>
Message-ID: <d6km33$mo7$1@sea.gmane.org>

Leonard J. Reder wrote:

> I am using PIL to annotate some images with lines.  I could not
> find anyway to make the line that is drawn from the ImageDraw object
> thicker.  Does anyone have a suggestion or solution for solving this
> without to much hacking?

if you have 1.1.5, you can use the width option to control
the line width. see:

    http://effbot.org/imagingbook/imagedraw.htm

> Thanks for any replies,

tip: you may get quicker/better responses if you use the
image-sig mailing list (if you're using a newsreader, point
it to gmane.comp.python.image)

</F>





From phillip.watts at anvilcom.com  Wed May  4 14:11:33 2005
From: phillip.watts at anvilcom.com (phil)
Date: Wed, 04 May 2005 13:11:33 -0500
Subject: Bandwith Shaping
References: <1115228921.520113.245920@z14g2000cwz.googlegroups.com>
Message-ID: <42791055.1090809@anvilcom.com>

flamesrock wrote:

> Just curious - is there an easy way to shape bandwith in python. If I
> wanted to have a max download speed for instance
> 
> -thanks
> 
Interesting normally bandwidth shaping is an IP stack function

in the Kernel.

You are receiving a download within a python program?
And want to slow it down?
You could put a sleep(.01) in your receive loop.
That's about as fine as sleep gets, i've read.

But those packets ( I assume TCP ) are going to stack up somewhere,
the sender is gonna keep trying and retrying.  In other words
you are increasing overall load to someone's router and the
network.
Someone correct me if I'm drunk on this.







From spam.me.not at dot.com  Sat May 21 12:09:58 2005
From: spam.me.not at dot.com (William Baker)
Date: 21 May 2005 16:09:58 -0000
Subject: Fw: evidence john bokma al jazeera connection ?
Message-ID: <1T87IN1838493.4652546296@anonymous.poster>




   please add forward to alt.security.terrorism if information

    p.p.s.  "john bokma" shows long list in message boards, just in last 
month.  lots of information to netherlands where muslem militants 
are.  could some be coded cryption to aljazeera, so messages are in
secret for the terror network?
   nl.comp.hardware
    nl.media.tv
   nl.wetenschap
   nl.huishouden
   nl.politiek
  nl.religie
  alt.nl.schandpaal
   nl.comp.os.linux.installatie
  be.politics
   nl.gezondheid.psychiatrie
  nl.internet.www.ontwerp
   nl.gezondheid.medisch
   nl.internet.misbruik
   nl.internet.algemeen
  comp.lang.python
  nl.comp.programmeren
   comp.lang.perl.modules
  comp.lang.perl.misc
  sci.electronics.basics
   nl.internet.www.server-side
  alt.internet.search-engines
  alt.www.webmaster
   comp.lang.perl.misc
  nl.markt.freelance
    nl.comp.hacken
   microsoft.public.msn.messenger
   be.comp.programming
  be.comp.internet.design
   nl.comp.os.linux.programmeren

    what if dutch messages are most coded and  hardest to break?  there is no 
arab language at babelfish.altavista.com.  dutch is there, and english.

     i will try to send this message around.  i hope some law agents will
look at john bokma.  he may work for al jazeera, on the computer webs and tv.

    concerned,
    william

>     p.s.   i ran a cross reference on john bokma  whereabouts, like he 
>just admits <Xns9659ACE89699Fcastleamber at 130.133.1.4> .
>
>    look for the  words "al-jazeera" and "new zealand", or netherlands, 
>mexico, turkey, or "sri lanka".  can it be only coincidence that john bokma 
>shows  up in the same places around the world, and at same times that 
>al jazeera showing up there?  thats way to many coincidences for one to have.
>
>     you can see  his programs at www.aljazeera.com,  and use translations 
>at babelfish.altavista.com, if you need, like for his dutch records.   somebody 
>needs to tell fbi agents this john bokma woirks for terror computers and tv.
>

>>    i keep looking at the john bokma al jazeera connection, and his dossier 
>>gets bigger.  this just one day cancels for al-jazeera and arab militant.  do 
>>bokma clients know how deep  he works for al jazeera?  look at this.
>>
>>    see this from 2003, cancel  for al jazeera and other arab names
>>at this message <bm7a55$7lh$1 at dexter.hensema.net> 
>>---
>>nl.internet.misbruik.rapport > Cancelreport from autocancelbot Sat Oct 11 
>>00:00:05 2003 - View Parsed
>>From: Erik Hensema <cancel... at hensema.net>
>>Newsgroups: nl.internet.misbruik.rapport
>>Subject: Cancelreport from autocancelbot Sat Oct 11 00:00:05 2003
>>Followup-To: nl.internet.misbruik
>>Date: Fri, 10 Oct 2003 22:00:05 +0000 (UTC)
>>Approved: cancel... at hensema.net
>>Message-ID: <bm7a55$7lh$1 at dexter.hensema.net>
>>NNTP-Posting-Host: dexter.hensema.net
>>NNTP-Posting-Date: Fri, 10 Oct 2003 22:00:05 +0000 (UTC)
>>
>>Id:         SWEN-ac-1065775366-168-1872
>>From:       John Bokma <postmas... at castleamber.com>
>>Subject:    Re: Gibe virus onderschepprogramma maken met Delphi
>>Newsgroups: nl.comp.programmeren
>>Message-Id: <bm5re6$bs... at nl-news.euro.net>
>>
>>Id:         1063628593-ac-1065747874-64-61268
>>From:       Rasheed AL-Jazeera <z... at itucxoh.org>
>>Subject:    nlo.news.groups, rethink the cool
>>Newsgroups: nlo.news.groups
>>Message-Id: <7c274433.037d6... at news.makmilac.org>
>>
>>Id:         1063628593-ac-1065748328-65-93686
>>From:       Hakeem Agha AL-Najjar <y... at nozju.org>
>>Subject:    nl.sport.vissen, power of his own PR
>>Newsgroups: nl.sport.vissen
>>Message-Id: <e2cd6499.cc982... at news.tekxeviv.org>
>>
>>Id:         1063628593-ac-1065748636-66-67216
>>From:       Abdel Said al-Zahhar <atukl... at qewzob.org>
>>Subject:    Re: nl.sport.bridge, counterbranding game
>>Newsgroups: nl.sport.bridge
>>Message-Id: <bd1a8b42.34289... at news.ajodfeb.org>
>>
>>Id:         1063628593-ac-1065748640-67-29631
>>From:       Ahmed al-Zawahiri <yxo... at nunjiry.org>
>>Subject:    nl.sport.voetbal, a fading empire
>>Newsgroups: nl.sport.voetbal
>>Message-Id: <ee9837b0.abcb6... at news.ecodzymo.org>
>>
>>Id:         1063628593-ac-1065744129-55-50231
>>From:       Ayub Al Zahhar <vuk... at gadvo.org>
>>Subject:    Re: nl.sport.skate, we take on Phil
>>Newsgroups: nl.sport.skate
>>Message-Id: <18676a61.65ae1... at news.esapf.org>
>>
>>Id:         1063628593-ac-1065744130-56-4336
>>From:       Karim Muhammad <yqihp... at bengiq.org>
>>Subject:    nl.sport.varen, isn't exactly rocket science
>>Newsgroups: nl.sport.varen
>>Message-Id: <c0808799.cc7fe... at news.sohli.org>
>>
>>Id:         1063628593-ac-1065744134-57-60721
>>From:       Fahd Saad Haq <inu... at ajobjyb.org>
>>Subject:    nl.kunst.sf+fantasy, a final challenge
>>Newsgroups: nl.kunst.sf+fantasy
>>Message-Id: <e124f79d.2fa3f... at news.iluqmo.org>
>>
>>Id:         1063628593-ac-1065744135-58-79683
>>From:       Fahd el-Hassan <ixorx... at hivqiq.org>
>>Subject:    Re: nl.sport.klim+bergsport, grass roots capitalism
>>Newsgroups: nl.sport.klim+bergsport
>>Message-Id: <43ddea45.9f23d... at news.koznaxu.org>
>>
>>Id:         1063628593-ac-1065744136-59-36414
>>From:       Ramez al Shehhi <ydabb... at pubvud.org>
>>Subject:    nl.sport.volleybal, megacorps do not control
>>Newsgroups: nl.sport.volleybal
>>Message-Id: <7785777c.94c2b... at news.sowted.org>
>>
>>Id:         1063628593-ac-1065745335-60-95994
>>From:       Fahd al-Islamia <m... at esuhv.org>
>>Subject:    Re: nl.media.tv, brand damage
>>Newsgroups: nl.media.tv
>>Message-Id: <994d5015.dfeb0... at news.ajublu.org>
>>
>>Id:         1063628593-ac-1065746233-61-20559
>>From:       Shah AL-Najjar <gexqu... at xasnato.org>
>>Subject:    nl.luchtvaart.microlight, undisputed champion
>>Newsgroups: nl.luchtvaart.microlight
>>Message-Id: <cb8526b5.7f1ae... at news.awubr.org>
>>
>>Id:         1063628593-ac-1065746534-62-77779
>>From:       Ibrahim Feyd AL-Islamia <ihynf... at ozuqvox.org>
>>Subject:    nl.gezondheid.alt-genezen, rethink the shoe
>>Newsgroups: nl.gezondheid.alt-genezen
>>Message-Id: <57735953.4e7e2... at news.byrqijav.org>
>>
>>Id:         1063628593-ac-1065747432-63-5384
>>From:       Abdul Hussein Mohammed <atiq... at poxpuxos.org>
>>Subject:    nl.sport.algemeen, marketing momentum
>>Newsgroups: nl.sport.algemeen
>>Message-Id: <68ffd2e1.7f9bd... at news.titcano.org>
>>---
>>     somebody should check all these message boards for john bokma 
>>informtaion.  interpol, fbi, and warn other groups about him.
>>
>>>    i have a report to make.  on another group i have been watching a thread 
>>>where somebody named "john bokma" has been hassling another reader for some 
>>>months now.  i think its politically motivated,  because the other guy 
>>>talks in good support of the us, and doesnt like terrorists.
>>>
>>>   i did a quick search for "john bokma", and i was  surprised to find out 
>>>that his whereabouts show him all over the place on the internet.  every 
>>>thing from new zealand, netherlans, mexico, and us.  scope it  for yourself.
>>>
>>>   now heres the clincher.  while i was searching through different message 
>>>boards i found some chatter in foreign language (dutch?), saying bokma writes
>>>>>computer  programs for terror al-jazeera webs, and has other suspicious 
>>>connections to  muslems.  has this john bokma been red flagged or reported to
>>>>>the  fbi?  somebody should take a close look at this guy.  he could be 
>>>working for alqueda terrorists. 
>>>
>>>   if it helps here are some address emails i found with his name on them.
>>>
>>>   jbokma at caiw.nl
>>>    j.j.j.bokma at caiw.nl
>>>   use at reply.address.com
>>>  john at castleamber.com
>>>   postmaster at castleamber.com







From ajikoe at gmail.com  Tue May 24 12:13:44 2005
From: ajikoe at gmail.com (Pujo Aji)
Date: Tue, 24 May 2005 18:13:44 +0200
Subject: install python 2.4.1
In-Reply-To: <20050524155921.GA2432@ActiveState.com>
References: <1116758705.327764.33740@g14g2000cwa.googlegroups.com>
	<d6pot2$2rd$1@news5.zwoll1.ov.home.nl>
	<1116760610.227839.83110@o13g2000cwo.googlegroups.com>
	<20050524155921.GA2432@ActiveState.com>
Message-ID: <cf5262d2050524091322aeede5@mail.gmail.com>

thanks

On 5/24/05, Trent Mick <trentm at activestate.com> wrote:
> [ajikoe at gmail.com wrote]
> > I use win xp pro.
> > I wonder about this new version of python because I use Nummeric, pyro,
> >  combine with komodo and pydev ide in my python 2.4.
> > If there is compatibility isue with the new version, it is better for
> > me not to install the new version.
> 
> There will be no compatibility issue with Komodo, at least. Nor should
> there be with the others, as Martin mentioned.
> 
> Trent
> 
> --
> Trent Mick
> TrentM at ActiveState.com
>


From could.net at gmail.com  Sun May 22 06:15:45 2005
From: could.net at gmail.com (could ildg)
Date: Sun, 22 May 2005 18:15:45 +0800
Subject: A newbie metaclass question
Message-ID: <311b5ce1050522031552263f2c@mail.gmail.com>

When I try to learn metaclass of python by article at this place:
http://www.python.org/2.2/descrintro.html#metaclasses,
I changed the autosuper example a little as below:
<code>
class autosuper(type):
    def __init__(cls,name,bases,dict):
        super(autosuper,cls).__init__(name,bases,dict)
        setattr(cls,"_%s__super" % name, super(cls))
        print "in metaclass: ", super(cls)
        
class A:
    __metaclass__ = autosuper
    def meth(self):
        print "in class A: ", self.__super
                
a=A()
a.meth() 
</code>
The result is as below:
in metaclass:  <super: <class 'A'>, NULL>
in class A:  <super: <class 'A'>, <A object>>

The 2 line are not the same. Why? Is this because that instance a has not
been created when the __init__ of the metaclass is called? If the cls in the
__init__ method is not an instance of A, what is it?

The metaclass of python is kinda difficult for me. Thanks for your help.


From steve at holdenweb.com  Fri May 27 13:23:12 2005
From: steve at holdenweb.com (Steve Holden)
Date: Fri, 27 May 2005 13:23:12 -0400
Subject: python24.zip
In-Reply-To: <42921399.2050302@v.loewis.de>
References: <mailman.249.1116595092.8733.python-list@python.org>	<428e0cc3$0$29954$9b622d9e@news.freenet.de>	<x7hdgw2zqi.fsf@handshake.de>	<428faddd$0$26322$9b622d9e@news.freenet.de>	<x7vf5bku5d.fsf@handshake.de>	<4290dc79$0$9989$9b622d9e@news.freenet.de>	<4291ea5b$1@nntp0.pdx.net>
	<42921399.2050302@v.loewis.de>
Message-ID: <d77kth$dcv$2@sea.gmane.org>

Martin v. L?wis wrote:
> Scott David Daniels wrote:
> 
>>>>Is the interpreter unable to call "C" functions ("stat" for example)
>>>>to determine whether an object exists before it puts it on "path".
>>>
>>>
>>>What do you mean, "unable to"? It just doesn't.
>>
>>In fact, the interpreter doesn't necessarily know when it is
>>affecting the path.
> 
> 
> Now I remember what makes this stuff really difficult: PEP 302
> introduces path hooks (sys.path_hooks), allowing imports from
> other sources than files. So the items on sys.path don't have
> to be directory or file names at all, and importing from them
> may still succeed if though stat fails.
> 
This new feature also makes the strategy of looking in the filestore for 
"os.py" somewhat dubious, hence my bug report.

regards
  Steve
-- 
Steve Holden        +1 703 861 4237  +1 800 494 3119
Holden Web LLC             http://www.holdenweb.com/
Python Web Programming  http://pydish.holdenweb.com/



From Bernd.Nawothnig at t-online.de  Mon May 16 13:08:15 2005
From: Bernd.Nawothnig at t-online.de (Bernd Nawothnig)
Date: Mon, 16 May 2005 19:08:15 +0200
Subject: newbie - variable "buried in quotes"
References: <1116260476.332975.87680@g49g2000cwa.googlegroups.com>
	<7pmdnSlf65zMTRXfRVn-2A@powergate.ca>
	<1116262822.735406.23940@f14g2000cwb.googlegroups.com>
Message-ID: <vk0nl2-gni.ln1@Bernd.Nawothnig.dialin.t-online.de>

On 2005-05-16, plsullivan wrote:
> Thanks guys but I am still not getting it. This part -->
> gp.FeatureclassToCoverage_conv?ersion("'Database
> Connections\\%s at GIS_srv-earth.?sde\\GIS.GIS.Cadastral\\GIS.GI?S.Parcels'
> POLYGON", prcl83, "", "DOUBLE") <--   % luser     is one long command.

Yes, I understood you perfectly well.

> I need to be able to insert the luser variable deep in the middle of
> that.

luser will replace the '%s' in my version. Just try it!



Bernd

-- 
Those who desire to give up freedom in order to gain security,
will not have, nor do they deserve, either one. [T. Jefferson]


From grante at visi.com  Wed May 11 12:44:19 2005
From: grante at visi.com (Grant Edwards)
Date: Wed, 11 May 2005 16:44:19 -0000
Subject: Finding startup files
References: <mailman.375.1115827885.29826.python-list@python.org>
	<1115829176.541687.22090@z14g2000cwz.googlegroups.com>
Message-ID: <1184dj36mp5sdc6@corp.supernews.com>

On 2005-05-11, hemagician at gmail.com <hemagician at gmail.com> wrote:
> The following script demonstrates a method that should work for you. I
> believe it is entirely cross-platform.
>
> #! /usr/bin/python
>
> import sys
> import os
>
> print os.path.abspath(os.path.dirname(sys.argv[0]))

That will probably work most of the time, but...

 1) you're not gauranteed that argv[0] contains the application
    path/filename.

 2) the directory containing the executable is not where
    configuration files are supposed to be stored under
    Unix/Linux.

-- 
Grant Edwards                   grante             Yow!  hubub, hubub, HUBUB,
                                  at               hubub, hubub, hubub, HUBUB,
                               visi.com            hubub, hubub, hubub.


From paul at prescod.net  Tue May  3 03:06:00 2005
From: paul at prescod.net (Paul Prescod)
Date: Tue, 03 May 2005 00:06:00 -0700
Subject: May 3: Vancouver Python, Zope and Plone User's Group
Message-ID: <427722D8.7090108@prescod.net>

This month's talk: 10 coolest things about Plone, Andy McKay

     This talk was originally supposed to be: "137 cool things about 
Plone" but we negotiated Andy down to just ten. But these ten things are 
not just cool: they are the coolest. Plone enthusiasts and hecklers 
equally welcome.

The group meets monthly (first Tuesday of each month) at 7pm. It is 
hosted by ActiveState ("a division of Sophos") at 580 Granville St., 
Vancouver

For more information:

	http://www.vanpyz.org/




From rkern at ucsd.edu  Sat May  7 05:11:23 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Sat, 07 May 2005 02:11:23 -0700
Subject: Encryption with Python?
In-Reply-To: <001301c552db$dd19d3e0$0201a8c0@mcuf7>
References: <1115324411.952821.150780@o13g2000cwo.googlegroups.com>
	<001301c552db$dd19d3e0$0201a8c0@mcuf7>
Message-ID: <d5i0as$ejd$1@sea.gmane.org>

Anthra Norell wrote:
> I rolled my own for relatively short sequences, like passwords. The key is
> an integer. To decrypt use the negative encryption key. I consider the
> encryption unbreakable, as it is indistinguishable from a random sequence.
> 
> Frederic
> 
> ###
> 
> def crypt (sequence, key):
>    import random
>    sign = (key > 0) * 2 - 1
>    random.seed (abs (key * sign))
>    s = ''
>    for i in xrange (len (sequence)):
>       r = random.randint (0, 255)
>       s += chr ((ord (sequence [i]) + r * sign) % 256)
>    return s

The mind boggles.

You do realize that if I have two ciphertexts encrypted with the same 
key, I can subtract them? Then I have a sequence, that while not 
immediately readable, is just a straightforward combination of the two 
plaintexts without any encryption.

This function is also vulnerable to a chosen-plaintext attack. The 
underlying PRNG is definitely not suitable for cryptographic 
applications. The documentation even says so!

http://docs.python.org/lib/module-random.html
"However, being completely deterministic, it is not suitable for all 
purposes, and is completely unsuitable for cryptographic purposes."

Do yourself a favor and don't try to roll your own cryptographic 
functions. Do everyone else a favor and don't call something 
"unbreakable" unless you actually have the domain expertise to make that 
determination.

And do read _Practical Cryptography_.

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From skip at pobox.com  Thu May 12 09:48:43 2005
From: skip at pobox.com (Skip Montanaro)
Date: Thu, 12 May 2005 08:48:43 -0500
Subject: Python Documentation (should be better?)
In-Reply-To: <7xoebhb1g8.fsf@ruckus.brouhaha.com>
References: <mailman.389.1115837608.29826.python-list@python.org>
	<1115839271.271071.32710@z14g2000cwz.googlegroups.com>
	<7xoebhb1g8.fsf@ruckus.brouhaha.com>
Message-ID: <17027.24251.202356.90640@montanaro.dyndns.org>


    Paul> Some parts of the lib doc are better than others.  The only way to
    Paul> understand SocketServer, for example, is to read the long comment
    Paul> at the beginning of the source file.  I've been wanting to get
    Paul> around to merging that with the doc writeup and adding some
    Paul> examples.

Thanks for the suggestion.  I just incorporated the module doc string into
the SocketServer doc (CVS HEAD and 2.4 release branch).

    Paul> Tkinter, as well, is practically undocumented as far as the base
    Paul> distro is concerned, but there's some good docs for it elsewhere
    Paul> on the web.

I'll let someone else tackle that one. ;-)

Skip



From rmm at iname.com  Wed May 11 08:56:04 2005
From: rmm at iname.com (rmm at iname.com)
Date: 11 May 2005 05:56:04 -0700
Subject: Replacing open builtin
In-Reply-To: <mailman.344.1115814576.29826.python-list@python.org>
References: <1115814028.259365.98710@g49g2000cwa.googlegroups.com>
	<mailman.344.1115814576.29826.python-list@python.org>
Message-ID: <1115816164.517116.124070@g14g2000cwa.googlegroups.com>

Sorry, should maybe have used __import__ as an example.
Let's say I grab import, store the reference within the Isolate class
and then redirect the builtin import to a function in the Isolate class
which only allows certain modules to be imported -eg not sys.   Would
this be secure?



From luis_lupe2XXX at netvisaoXXX.pt  Wed May 18 07:56:50 2005
From: luis_lupe2XXX at netvisaoXXX.pt (Luis P. Mendes)
Date: Wed, 18 May 2005 12:56:50 +0100
Subject: speeding up Python script
In-Reply-To: <mailman.125.1116378401.8733.python-list@python.org>
References: <3evgolF56gtkU3@individual.net>
	<mailman.125.1116378401.8733.python-list@python.org>
Message-ID: <3f0os2F4lpshU1@individual.net>

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

The reason why I'm using six nested for loops is because I need to find
the best output using those six variables as input.

Here's the simplified code:

for per in range():
~    for s in range():
~        for t in range():
	    for v in range():
~                for n in range():
~                    for l in range():
			var a, \
			var b, \
			...
			var 15 = function1(arg1, \
						...
						arg20)
~ 						var a, \
			var d, \
			var a, \
			...
			var 14 = function2(arg1, \
						...
						arg25)
			var c, \
			...
			var 18 = function3(arg1, \
						...
						arg20)
		ia = var1*var2-numPerdidos*sl
												result.insert(index, [per,s,t,v,n,l,ia])
		index = index + 1

thanks for the replies
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.4 (GNU/Linux)
Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org

iD8DBQFCiy2CHn4UHCY8rB8RAlafAJ4wQ8mSCGFwTTt9EH1bn54tTuI40wCfSrn8
KDSrHnsIV2cY/PKmL3ZwLdI=
=39Cm
-----END PGP SIGNATURE-----


From sjmachin at lexicon.net  Fri May 27 08:07:01 2005
From: sjmachin at lexicon.net (John Machin)
Date: Fri, 27 May 2005 22:07:01 +1000
Subject: Strings for a newbie
In-Reply-To: <d7726f$fdg$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
References: <d7726f$fdg$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
Message-ID: <42970d69@news.eftel.com>

Malcolm Wooden wrote:
> I'm trying to get my head around Python but seem to be failing miserably. I 
> use RealBasic on a Mac and find it an absolute dream! But Python....UGH!
> 
> I want to put a sentence of words into an array, eg "This is a sentence of 
> words"
> 
> In RB it would be simple:
> 
> Dim s as string
> Dim a(-1) as string
> Dim i as integer
> 
> s = "This is a sentence of words"
> For i = 1 to CountFields(s," ")
>   a.append NthField(s," ",i)
> next
> 
> That's it an array a() containing the words of the sentence.
> 
> Now can I see how this is done in Python? - nope!
> 
> UGH!
> 
> Malcolm
> (a disillusioned Python newbie) 
> 
> 


 >>> s = "This is a sentence of words"
 >>> a = s.split()
 >>> a
['This', 'is', 'a', 'sentence', 'of', 'words']
 >>>


From python at ehp2.hostinx.com  Wed May 18 15:08:03 2005
From: python at ehp2.hostinx.com (EHP)
Date: Wed, 18 May 2005 21:08:03 +0200
Subject: Is Python suitable for a huge, enterprise size app?
In-Reply-To: <428B8157.9080005@pythonapocrypha.com>
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>
	<428B8157.9080005@pythonapocrypha.com>
Message-ID: <200505182108.03701.python@ehp2.hostinx.com>

> Python has good database support, it works well on a wide range of
> platforms, and it's great at tying together different processes, machines,
> etc. - for example, it's fairly easy to get Python to access C code,
> dynamic libraries, system APIs, and external programs. It's easier to test
> than Java code as well, and the overal cost of change is lower.

Python has good DB support - but only simple connectors (like JDBC).
ORM in Java (like Hibernate) are much better than ORM in Python (probably the 
best is sqlobject). How you can write huge OO app without ORM ?
IMHO supporting libraries for bussiness apps are better in Java (don't flame 
please).

EHP


From claird at lairds.us  Tue May 31 12:08:03 2005
From: claird at lairds.us (Cameron Laird)
Date: Tue, 31 May 2005 16:08:03 GMT
Subject: How do you drive-by-wire a car using Python ?
References: <1117478120.880612.75250@g44g2000cwa.googlegroups.com>
	<mailman.262.1117485409.18027.python-list@python.org>
	<1117531526.205312.192360@f14g2000cwb.googlegroups.com>
Message-ID: <c3dum2-dph.ln1@lairds.us>

In article <1117531526.205312.192360 at f14g2000cwb.googlegroups.com>,
igorcarron at gmail.com <igorcarron at gmail.com> wrote:
>Please note we had to avoid trash cans when the DARPA folks came to
>visit us. Our vehicle aims at being a garbage avoidance system instead
>:-)
>
>Igor.
>

Python clearly is unsuitable for Grand Challenges, as I believe I once
heard someone in a hallway say that it doesn't properly release garbage
back to The System, and, anyway, it doesn't recognize every spelling for
garbage used in any other language.  Python must be for weak girlie men.


From philippe at philippecmartin.com  Sat May 28 17:10:02 2005
From: philippe at philippecmartin.com (Philippe C. Martin)
Date: Sat, 28 May 2005 21:10:02 GMT
Subject: Getting value of radiobutton trouble
References: <3fs17rF9b8edU1@news.dfncis.de>
	<%35me.194$Dq7.159@newssvr11.news.prodigy.com>
Message-ID: <K65me.195$Dq7.187@newssvr11.news.prodigy.com>

Sorry,

I still had your code in my clipboard :-) here goes:



from Tkinter import *
class GetVariant(Frame):
     def __init__(self,p):
         self.root = p
         self.mainframe = Frame(self.root,bg="yellow")
         self.mainframe.pack(fill=BOTH,expand=1)

         self.firstframe = Frame(self.mainframe,bg="red")
         self.firstframe.pack(side=BOTTOM,expand=1)


         self.v = StringVar()
         self.radiobutton = Radiobutton(self.firstframe,text="Variant 1",
variable=self.v, value="Variant 1")
         self.radiobutton.pack(side=TOP,anchor=W)
         self.radiobutton.select()
         self.radiobutton = Radiobutton(self.firstframe,text="Variant 2",
variable=self.v, value="Variant 2")
         self.radiobutton.pack(side=TOP,anchor=W)
         self.radiobutton = Radiobutton(self.firstframe,text="Variant 3",
variable=self.v, value="Variant 3")
         self.radiobutton.pack(side=TOP,anchor=W)



         self.secondframe = Frame(self.mainframe,bg="blue")
         self.secondframe.pack()
         self.var = Button(self.secondframe,text="What
Variant",command=self.call)
         self.var.pack(expand=1,side=BOTTOM)



     def call(self):
         print dir(self.v)
         self.variant = self.v.get()
         print 'Input => "%s"' % self.variant

class OneButton(Frame):
         def __init__(self):
             self.root = Tk()
             Button(self.root,text="click me",command=self.getvar).pack()
         def getvar(self):
             print 'HRE'
             a=GetVariant(self.root)

d = OneButton()
d.root.mainloop()






Philippe C. Martin wrote:

> Hi,
> 
> I think your second call to Tk() does it: this works although the look is
> different:
> 
> 
> from Tkinter import *
> class GetVariant:
>      def __init__(self):
>          self.root = Tk()
>          self.mainframe = Frame(self.root,bg="yellow")
>          self.mainframe.pack(fill=BOTH,expand=1)
> 
>          self.firstframe = Frame(self.mainframe,bg="red")
>          self.firstframe.pack(side=BOTTOM,expand=1)
> 
>          global v
>          v = StringVar()
>          self.radiobutton = Radiobutton(self.firstframe,text= "Variant
> 1", variable=v, value="Variant 1")
>          self.radiobutton.pack(side=TOP,anchor=W)
>          self.radiobutton.select()
>          self.radiobutton = Radiobutton(self.firstframe,text= "Variant
> 2", variable=v, value="Variant 2")
>          self.radiobutton.pack(side=TOP,anchor=W)
>          self.radiobutton = Radiobutton(self.firstframe,text= "Variant
> 3", variable=v, value="Variant 3")
>          self.radiobutton.pack(side=TOP,anchor=W)
> 
> 
> 
>          self.secondframe = Frame(self.mainframe,bg="blue")
>          self.secondframe.pack()
>          self.var = Button(self.secondframe,text="What
> Variant",command=self.call)
>          self.var.pack(expand=1,side=BOTTOM)
> 
> 
> 
>      def call(self):
>          self.variant = v.get()
>          print 'Input => "%s"' % self.variant
> 
> class OneButton:
>          def __init__(self):
>              self.root = Tk()
>              Button(self.root,text="click me",command=self.getvar).pack()
>          def getvar(self):
>              a=GetVariant()
> 
> d = OneButton()
> d.root.mainloop()
> 
> 
> 
> 
> VK wrote:
> 
>> Hi!
>> What I'm missing in following code? Cannot get the values of
>> radiobuttons. Starting only one class (GetVariant), it works. When I put
>> two classes together, it doesn't.
>> Regards, VK
>> 
>> from Tkinter import *
>> class GetVariant:
>>      def __init__(self):
>>          self.root = Tk()
>>          self.mainframe = Frame(self.root,bg="yellow")
>>          self.mainframe.pack(fill=BOTH,expand=1)
>> 
>>          self.firstframe = Frame(self.mainframe,bg="red")
>>          self.firstframe.pack(side=BOTTOM,expand=1)
>> 
>>          global v
>>          v = StringVar()
>>          self.radiobutton = Radiobutton(self.firstframe,text= "Variant
>> 1", variable=v, value="Variant 1")
>>          self.radiobutton.pack(side=TOP,anchor=W)
>>          self.radiobutton.select()
>>          self.radiobutton = Radiobutton(self.firstframe,text= "Variant
>> 2", variable=v, value="Variant 2")
>>          self.radiobutton.pack(side=TOP,anchor=W)
>>          self.radiobutton = Radiobutton(self.firstframe,text= "Variant
>> 3", variable=v, value="Variant 3")
>>          self.radiobutton.pack(side=TOP,anchor=W)
>> 
>> 
>> 
>>          self.secondframe = Frame(self.mainframe,bg="blue")
>>          self.secondframe.pack()
>>          self.var = Button(self.secondframe,text="What
>> Variant",command=self.call)
>>          self.var.pack(expand=1,side=BOTTOM)
>> 
>> 
>> 
>>      def call(self):
>>          self.variant = v.get()
>>          print 'Input => "%s"' % self.variant
>> 
>> class OneButton:
>>          def __init__(self):
>>              self.root = Tk()
>>              Button(self.root,text="click me",command=self.getvar).pack()
>>          def getvar(self):
>>              a=GetVariant()
>> 
>> d = OneButton()
>> d.root.mainloop()



From http  Wed May 11 01:58:01 2005
From: http (Paul Rubin)
Date: 10 May 2005 22:58:01 -0700
Subject: Python Args By Reference
References: <1115769308.136143.74080@f14g2000cwb.googlegroups.com>
	<1182j1daaepv6f4@corp.supernews.com>
	<1115787330.723188.295610@f14g2000cwb.googlegroups.com>
	<7xbr7igy12.fsf@ruckus.brouhaha.com>
	<1115790189.005940.158030@f14g2000cwb.googlegroups.com>
	<7xr7gemhk8.fsf@ruckus.brouhaha.com>
Message-ID: <7xmzr2mhhy.fsf@ruckus.brouhaha.com>

Paul Rubin <http://phr.cx at NOSPAM.invalid> writes:
>     state = [A,B,C,D,E,F,G,H]
>     magic = [0x428A2F98, 0x71374491, 0xB5C0FBCF, 0xE9B5DBA5, 
>              0x3956C25B, 0x59F111F1, 0x923F82A4, 0xAB1C5ED5, 0xD807AA98 ]
> 
>     def P(state, i, magic):
>        a,b,c,d,e,f,g,h = state[i:] + state[:i]
>        temp1 = h + S3(e) + F1(e,f,g) + K + x

Woops, K is supposed to say magic[i].  


From flupke at nonexistingdomain.com  Mon May 16 08:54:59 2005
From: flupke at nonexistingdomain.com (flupke)
Date: Mon, 16 May 2005 12:54:59 GMT
Subject: cddb and mci produce an ImportError
Message-ID: <DK0ie.92530$Lm4.5501001@phobos.telenet-ops.be>

Hi,

i am in search of a cddb module for Python on windows. I stumbled upon 
http://sourceforge.net/projects/cddb-py but couldn't use it since the 
mci.dll is compiled against Python2.0.
So i'm trying to rebuild it using Dev-C++. I've succeeded in building a 
dll but when i try a test program it get this error:
http://sourceforge.net/projects/cddb-py

Traceback (most recent call last):
   File "cddtest.py", line 1, in ?
     import CDDB, DiscID
   File "C:\Python24\lib\DiscID.py", line 15, in ?
     import cdrom, sys
   File "C:\Python24\lib\cdrom.py", line 8, in ?
     import mci
ImportError: dynamic module does not define init function (initmci)

I had already some problems with the CDDB.py program since it used 
os.geteuid() and python gave an error for that too. These are the files 
i'm using and i'm not sure the content is correct. I used a dll project 
and copied and pasted the content of the original files from the cddb 
project in there in the hopes of getting it to work.

mci.h
========================================================================
#ifndef _DLL_H_
#define _DLL_H_

#if BUILDING_DLL
# define DLLIMPORT __declspec (dllexport)
#else /* Not BUILDING_DLL */
# define DLLIMPORT __declspec (dllimport)
#endif /* Not BUILDING_DLL */

DLLIMPORT void initmci(void);

class DLLIMPORT DllClass
{
   public:
     DllClass();
     virtual ~DllClass(void);

   private:

};


#endif /* _DLL_H_ */


mci.cpp
========================================================================
/* Replace "dll.h" with the name of your header */
#include "mci.h"
#include <windows.h>
#include <mmsystem.h>
#include <C:\Python24\include\Python.h>

DllClass::DllClass()
{

}


DllClass::~DllClass ()
{

}

static PyObject *mci_error;

#define MCI_STRING_LEN  1000

static PyObject *mci_mciSendString(PyObject *self, PyObject *args)
{
     char resultStr[MCI_STRING_LEN+1];
     PyObject *pyStr = 0;
     if (!PyArg_ParseTuple(args, "O!", &PyString_Type, &pyStr))
	   return NULL;
     // windows mciSendString see cdrom.py for Samples (or MSDN for 
complete doc)
     mciSendString( PyString_AsString(pyStr), resultStr,MCI_STRING_LEN,0);
     return Py_BuildValue("s", resultStr);
}


static PyMethodDef mci_methods[] = {
     { "mciSendString", mci_mciSendString, METH_VARARGS },
     { NULL, NULL }
};


void initmci(void)
{
     PyObject *module, *dict;

     module = Py_InitModule("mci", mci_methods);
     dict = PyModule_GetDict(module);
     mci_error = PyErr_NewException("mci.error", NULL, NULL);
     PyDict_SetItemString(dict, "error", mci_error);
}

BOOL APIENTRY DllMain (HINSTANCE hInst /* Library instance handle. */ ,
                        DWORD reason    /* Reason this function 
is being 						  called. */ ,
                        LPVOID reserved /* Not used. */ )
{
     switch (reason)
     {
       case DLL_PROCESS_ATTACH:
         break;

       case DLL_PROCESS_DETACH:
         break;

       case DLL_THREAD_ATTACH:
         break;

       case DLL_THREAD_DETACH:
         break;
     }

     /* Returns TRUE on success, FALSE on failure */
     return TRUE;
}

test program
========================================================================
import CDDB, DiscID

cdrom = DiscID.open()
disc_id = DiscID.disc_id(cdrom)

(query_status, query_info) = CDDB.query(disc_id)
(read_status, read_info) = CDDB.read(query_info['category'], 
query_info['disc_id'])

for i in range(disc_id[1]):
     print "Track %.02d: %s" % (i, read_info['TTITLE' + `i`])

I've included these libraries (linker options):
--no-export-all-symbols --add-stdcall-alias
C:/Dev-Cpp/lib/libwinmm.a
C:/Python24/libs/python24.lib
C:/Python24/libs/libpython24.a

It compiles fine and makes a mci.dll but as i said, i get the 
ImportError when i run it.

Any ideas?

Thanks,
Benedict


From temp at mclift.fsnet.co.uk  Thu May 19 14:23:04 2005
From: temp at mclift.fsnet.co.uk (temp at mclift.fsnet.co.uk)
Date: 19 May 2005 11:23:04 -0700
Subject: Markov chain with extras?
In-Reply-To: <428c5aec$0$306$edfadb0f@dread12.news.tele.dk>
References: <1116278880.976106.191780@o13g2000cwo.googlegroups.com>
	<1116283144.051195.193370@g44g2000cwa.googlegroups.com>
	<1116333014.950383.310040@g44g2000cwa.googlegroups.com>
	<428a49bb$0$31079$626a14ce@news.free.fr>
	<1116442387.496825.224140@g49g2000cwa.googlegroups.com>
	<428c5aec$0$306$edfadb0f@dread12.news.tele.dk>
Message-ID: <1116526984.719167.94890@g43g2000cwa.googlegroups.com>

Hi Gentlemen,

First off, thanks for the work/time you've put into this - much
appreciated!
Let me play around with the code and I'll get back to you tomorrow.

Malcolm



From powderkeg at snow.email.ne.jp  Tue May 31 04:02:41 2005
From: powderkeg at snow.email.ne.jp (Mark Sargent)
Date: Tue, 31 May 2005 17:02:41 +0900
Subject: [ANN] IPython 0.6.14.
In-Reply-To: <429C0CB9.10201@snow.email.ne.jp>
References: <d7h185$sp5$1@sea.gmane.org> <429C0CB9.10201@snow.email.ne.jp>
Message-ID: <429C1A21.1040301@snow.email.ne.jp>

Mark Sargent wrote:

>Fernando Perez wrote:
>
>  
>
>>Hi all,
>>
>>I've just made the 0.6.14 release of IPython, mostly to fix the
>>inevitable bugs reported after the .13 one (though one big improvement
>>sneaked by).
>>
>>IPython's homepage is at:
>>
>>http://ipython.scipy.org
>>
>>and downloads are at:
>>
>>http://ipython.scipy.org/dist
>>
>>I've provided RPMs (for Python 2.3 and 2.4, built under Fedora Core 3),
>>plus source downloads (.tar.gz).  Fedora users should note that IPython
>>is now officially part of the Extras repository, so they can get the
>>update from there as well (though it may lag by a few days).
>>
>>There is also a native win32 installer which should work correctly for
>>both Python 2.3 and 2.4.
>>
>>Debian, Fink and BSD packages for this version should be coming soon, as
>>the respective maintainers (many thanks to Jack Moffit, Andrea Riciputi
>>and Dryice Liu) have the time to follow their packaging procedures.
>>
>>Many thanks to Enthought for their continued hosting support for
>>IPython, and to all the users who contributed ideas, fixes and reports.
>>
>>I'd like to add a special thanks to Denis Rivi?re, Yann Cointepas and
>>Benjamin Thyreau for their hard work on the Qt improvements, and for
>>their overall hospitality.  Python really seems to have a remarkably
>>friendly community, worldwide!
>>
>>
>>WHAT is IPython?
>>----------------
>>
>>1. An interactive shell superior to Python's default. IPython has many
>>features for object introspection, system shell access, and its own 
>>special command system for adding functionality when working interactively.
>>
>>2. An embeddable, ready to use interpreter for your own programs. 
>>IPython can be started with a single call from inside another program, 
>>providing access to the current namespace.
>>
>>3. A flexible framework which can be used as the base environment for 
>>other systems with Python as the underlying language.
>>
>>
>>Release notes
>>-------------
>>
>>As always, the NEWS file can be found at http://ipython.scipy.org/NEWS,
>>and the full ChangeLog at http://ipython.scipy.org/ChangeLog.  The
>>highlights of this release follow.
>>
>>This is mainly a bugfix release, to clean up the problems reported in
>>0.6.13.  As I said at the time, I intend to start new development now
>>(more details on that in a separate email).  As always, however, a few
>>new goodies managed to sneak by.
>>
>>* A new -qthread option to support controlling Qt apps from within
>>ipython, similar to what -gthread and -wthread do for GTK/WX.  This was
>>contributed by Denis Rivi?re <nudz-AT-free.fr>, Yann Cointepas
>><yann-AT-sapetnioc.org> and Benjamin Thyreau <Benji2-AT-decideur.info>.
>>  Many thanks to them!  The lack of Qt support was a glaring omission of
>>ipython's gui features, so I'm extremely happy to have their contribution.
>>
>>   For those of you who may be matplotlib users as well, I should note
>>that as of mpl 0.81 (the next release, or use current CVS), the -pylab
>>option will also support interactive matplotlib use with the Qt backend.
>>  This is also thanks to work done by Denis, Yann and Benjamin against
>>the matplotlib Qt backend, in conjunction with the IPython improvements.
>>
>>* New -e option to %run to suppress tracebacks from sys.exit() calls.
>>This can be very useful to silence all the noise generated when running
>>unittests from within ipython.
>>
>>* New ';' escape to autoquote a line without splitting:
>>
>>In [6]: ,foo a b c
>>------> foo("a", "b", "c")
>>
>>In [7]: ;foo a b c
>>------> foo("a b c")
>>
>>In the process, I fixed ',' quoting, which I'd broken in .13.
>>
>>* Fix -wthread to work with WXPython 2.6 (this also impacts matplotlib
>>users who run the WX backend).
>>
>>* Added new matcher (it goes at the end of the priority list) to do
>>tab-completion on named function arguments.  Submitted by George Sakkis
>><gsakkis-AT-eden.rutgers.edu>.  See the thread at
>>
>>http://www.scipy.net/pipermail/ipython-dev/2005-April/000436.html
>>
>>for more details.
>>
>>* Various other fixes for obscure bugs, but all of which caused reported
>>IPython crashes.  Details in Changelog.
>>
>>
>>Enjoy, and as usual please report any problems.
>>
>>Regards,
>>
>>Fernando.
>>
>> 
>>
>>    
>>
>Hi All,
>
>Fernando, if I may ask, as I'm a Fedora3 user. You mention that there 
>are RPMs for FC3, for Python2.3, 2.4. I'm new to Python. Is IPython 
>built into FC3s Python or is it a stand-alone program.? Sorry for 
>troubling you with this. Cheers.
>
>Mark Sargent.
>  
>
Hi All,

apologies...figured it out...cheers...p.s. thanx for such a cool tool, 
Fernando and friends..

Mark Sargent.


From kay.schluehr at gmx.net  Mon May  9 01:47:58 2005
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: 8 May 2005 22:47:58 -0700
Subject: __brace__ (PEP?)
In-Reply-To: <roy-8C6C81.20480608052005@reader1.panix.com>
References: <mailman.175.1115594947.29826.python-list@python.org>
	<roy-DE30BB.20151208052005@reader1.panix.com>
	<mailman.177.1115599072.29826.python-list@python.org>
	<roy-8C6C81.20480608052005@reader1.panix.com>
Message-ID: <1115617678.841460.294970@z14g2000cwz.googlegroups.com>

Roy Smith wrote:

> foo->bar ==> foo.__arrrow__(bar)
> foo$bar ==> foo.__dollar__(bar)
> foo#bar ==> foo.__hash__(bar)
> foo::bar ==> foo.__scope__(bar)

I'm strongly in favor for the arrow ( but with two "r" only ). The
question is simply: for what?

> and so on down the list of non-alphanumeric characters, but the
result
> wouldn't be anything most of us would recognize as Python.

After many sleepless nights reading all the comments and flames about
@decorators I finally came up using them. 

Ciao,
Kay



From gandalf at geochemsource.com  Mon May 23 06:29:04 2005
From: gandalf at geochemsource.com (Laszlo Zsolt Nagy)
Date: Mon, 23 May 2005 12:29:04 +0200
Subject: Manipulating mailboxes
In-Reply-To: <d6sa90$5c7$1@news.tsystems.kiev.ua>
References: <mailman.11.1116838742.18027.python-list@python.org>
	<d6sa90$5c7$1@news.tsystems.kiev.ua>
Message-ID: <4291B070.2040404@geochemsource.com>

Maksim Kasimov wrote:

>change header information, insert messages into a database, delete/add messages, should not store passwords for all users, ... and any things else you wish to do - if your OS is UNIX - just forward mail messages of some users to your python script (you don't need to write a daemon for this)
>All you need is to place file ".forward" in users home directory, and write like this:
>|/path/myscript.py
>  
>

>and chmod the script:
>chmod 777 /path/myscript.py
>  
>
Oh, fantastic. :-) Then I can open stdin and read the e-mail message 
from there.
Thank you so much

Laci 2.0




From mnations at gmail.com  Thu May 26 16:08:52 2005
From: mnations at gmail.com (Mudcat)
Date: 26 May 2005 13:08:52 -0700
Subject: py2exe problems with win32com [
	EnsureDispatch('ADODB.Connection') ]
In-Reply-To: <1117056064.693253.74330@z14g2000cwz.googlegroups.com>
References: <1117056064.693253.74330@z14g2000cwz.googlegroups.com>
Message-ID: <1117138132.617482.171480@o13g2000cwo.googlegroups.com>

I'm not positive about this, but when using com you need to force it
into the compile. In my applications where I use Excel I use this line:

python setup.py py2exe --progid "Excel.Application"

You may need to do something similar for the db application.



From rolland1  Sun May 15 21:17:36 2005
From: rolland1 (Rolland)
Date: Sun, 15 May 2005 20:17:36 -0500
Subject: thread title's getting shorter...
References: <1116096706.696830.275140@g44g2000cwa.googlegroups.com>
	<Etvhe.1353573$8l.349001@pd7tw1no>
	<wemdnVcXpcOIIxvfRVn-tQ@comcast.com>
	<rockon02-1505052236350001@1cust127.tnt6.adl1.da.uu.net>
	<1116201587.067054.220550@g49g2000cwa.googlegroups.com>
Message-ID: <118ftdvgp0r4o34@corp.supernews.com>


"Johnny Gentile" <whocaresrmb at yahoo.com> wrote in message 
news:1116201587.067054.220550 at g49g2000cwa.googlegroups.com...
> .
? 




From jmdeschamps at cvm.qc.ca  Fri May 27 10:08:25 2005
From: jmdeschamps at cvm.qc.ca (jean-marc)
Date: 27 May 2005 07:08:25 -0700
Subject: write to the same file from multiple processes at the same time?
In-Reply-To: <e3617$429713d7$3eb01f24$9096@news.flashnewsgroups.com>
References: <e3617$429713d7$3eb01f24$9096@news.flashnewsgroups.com>
Message-ID: <1117202905.257767.257270@g43g2000cwa.googlegroups.com>

Sorry, why is the temp file solution 'stupid'?, (not
aesthetic-pythonistic???) -  it looks OK: simple and direct, and
certainly less 'heavy' than any db stuff (even embedded)

And  collating in a 'official log file' can be done periodically by
another process, on a time-scale that is 'useful' if not
instantaneous...

Just trying to understand here...

JMD



From skip at pobox.com  Tue May 31 13:23:01 2005
From: skip at pobox.com (Skip Montanaro)
Date: Tue, 31 May 2005 12:23:01 -0500
Subject: The need to put "self" in every method
In-Reply-To: <8c7f10c605053109376b00a342@mail.gmail.com>
References: <1117554344.938440.54700@g14g2000cwa.googlegroups.com>
	<8c7f10c605053109376b00a342@mail.gmail.com>
Message-ID: <17052.40309.761789.759031@montanaro.dyndns.org>


    Simon> Of course, if you *don't* use 'self', you should expect an angly
    Simon> mob with pitchforks and torches outside your castle.

I take it an "angly mob" is a large group of stick figures? <wink>

Skip


From timr at probo.com  Thu May  5 02:28:20 2005
From: timr at probo.com (Tim Roberts)
Date: Wed, 04 May 2005 23:28:20 -0700
Subject: If you use PayPal you might consider an alternative
References: <d56t0h$745$1@garrison.globalnet.hr>
Message-ID: <a2fj71d9rlg3mh4s0919pdlq6d2f7u5p3t@4ax.com>

"Allan" <allan at allan.allan> wrote:

>If you used PayPal and are not satisifed with their service there is a
>new and better service opening. They will be starting up during the
>early summer this year. The best of all - signup is FREE.
>
>Check out their benefits:
>
>www.greenzap.com/benefits

That web zite iz juzt too cutezy.  I could never truzt it, even if I hadn't
learned about it through a newzgroup zpam.
-- 
- Tim Roberts, timr at probo.com
  Providenza & Boekelheide, Inc.


From tim.golden at viacom-outdoor.co.uk  Thu May 12 04:30:16 2005
From: tim.golden at viacom-outdoor.co.uk (Tim Golden)
Date: Thu, 12 May 2005 09:30:16 +0100
Subject: Finding startup files
Message-ID: <9A28C052FF32734DACB0A288A3533991EBB806@vogbs009.gb.vo.local>

[Mike Meyer]

[... snip discussions of where to put config files ...]

| Yes, but Windows these days supports multiple users. Are you sure that
| you want to restrict your users to one configuration file per
| installed version of the program?
| 
| I'm not sure Windows has a good solution to this problem. My
| experiences with trying to share applications between users on Windows
| haven't been very pleasant.

I have the impression that few configs are stored these days
without being per-user. However, there are "All Users"
versions of the appdata directories, and so on, which could
be used for such a purpose.

<code>

from win32com.shell import shell, shellcon
import win32api

print shell.SHGetPathFromIDList (
  shell.SHGetSpecialFolderLocation (1, shellcon.CSIDL_APPDATA)
)
print shell.SHGetPathFromIDList (
  shell.SHGetSpecialFolderLocation (0, shellcon.CSIDL_COMMON_APPDATA)
)

</code>

TJG

________________________________________________________________________
This e-mail has been scanned for all viruses by Star. The
service is powered by MessageLabs. For more information on a proactive
anti-virus service working around the clock, around the globe, visit:
http://www.star.net.uk
________________________________________________________________________


From gsakkis at rutgers.edu  Sat May  7 22:34:48 2005
From: gsakkis at rutgers.edu (George Sakkis)
Date: 7 May 2005 19:34:48 -0700
Subject: Newbie : checking semantics
In-Reply-To: <1115503520.392357.230620@f14g2000cwb.googlegroups.com>
References: <1115503520.392357.230620@f14g2000cwb.googlegroups.com>
Message-ID: <1115519688.206427.213050@o13g2000cwo.googlegroups.com>

> What disappoints me is that pyton will happily accept and execute
this
> code :
>
> if ( aConditionThatIsFalse ):
>      AFunctionThatIsntDefined()
>
> print "Hello world"
>
> The fact that python doesn't check if the symbol
> AFunctionThatIsntDefined is defined, is really bad when you develop
big
> pieces of code. You will never be sure that your code is free of this
> kind of dummy errors and testing every possible execution paths is
> nightmarish !

You're absolutely right. Any real language should catch these types of
errors, just as it would verify that the program below is correct:


if (aCondition):
    AFunctionThatIsDefined()
.
.
.
.
def AFunctionThatIsDefined():
    return 0 / (0-0)


Moral: There are *many* more reasons for testing every execution path
than catching name or type errors.

George



From jaydonnell at gmail.com  Mon May  2 19:57:28 2005
From: jaydonnell at gmail.com (jdonnell)
Date: 2 May 2005 16:57:28 -0700
Subject: adodb, sql server, and last insert id
Message-ID: <1115078248.036051.182310@l41g2000cwc.googlegroups.com>

I'm not very familiar with sql server or adodb. I'm writing a python
script that uses adodb as described at http://www.ecp.cc/pyado.html,
but I can't figure out how to get the id of my last insert.



From ptmcg at austin.rr.com  Thu May 12 17:11:49 2005
From: ptmcg at austin.rr.com (Paul McGuire)
Date: 12 May 2005 14:11:49 -0700
Subject: bash like expansion
In-Reply-To: <1115923533.263490.67970@g44g2000cwa.googlegroups.com>
References: <1115923533.263490.67970@g44g2000cwa.googlegroups.com>
Message-ID: <1115932308.985568.158560@o13g2000cwo.googlegroups.com>

Something in this vein?

>>> baseString = "string with %s"
>>> [ baseString % ss for ss in ('foo', 'baz') ]
['string with foo', 'string with baz']
>>> b = " ".join([ baseString % ss for ss in ('foo', 'baz') ])
>>> b
'string with foo string with baz'
>>>

-- Paul



From reder at jpl.nasa.gov  Wed May 25 19:36:04 2005
From: reder at jpl.nasa.gov (Leonard J. Reder)
Date: Wed, 25 May 2005 16:36:04 -0700
Subject: vim configuration for python
Message-ID: <d73255$e8b$1@nntp1.jpl.nasa.gov>

Hello,

I am looking at configuring vim for Python.  Most importantly I
need 4 spaces when the tab is hit.  I am searching and getting
a bit confused.  Does anyone know where I can find a set of
ready made .vimrc and ~/.vim/syntax/python.vim.  If could find
c.vim and cpp.vim these would be useful also.

Thanks for any pointer.
Len
-- 
____________________________________________________
Leonard J. Reder
Jet Propulsion Laboratory
Interferometry Systems and Technology Section 383
Email: reder at huey.jpl.nasa.gov
Phone (Voice): 818-354-3639
Phone (FAX): 818-354-4357
Mail Address:
Mail Stop: 171-113
4800 Oak Grove Dr.
Pasadena, CA. 91109
---------------------------------------------------


From mfranklin1 at gatwick.westerngeco.slb.com  Thu May 12 03:41:06 2005
From: mfranklin1 at gatwick.westerngeco.slb.com (Martin Franklin)
Date: Thu, 12 May 2005 08:41:06 +0100
Subject: tkinter puzzler
In-Reply-To: <7xzmv0hq2h.fsf_-_@ruckus.brouhaha.com>
References: <7xzmv0hq2h.fsf_-_@ruckus.brouhaha.com>
Message-ID: <d5v0s3$cil$1@sea.gmane.org>

Paul Rubin wrote:
> I have a gui with a bunch of buttons, labels, the usual stuff.  It
> uses the grid manager:
> 
>    gui = Frame()
>    gui.grid()
>    gui.Label(....).grid()  # put some widgets into the gui
>    ...    # more widgets
> 
> Now at the the very bottom of the gui, I want to add two more buttons,
> let's say "stop" and "go".  I want "stop" to appear in the gui's lower
> left corner and "go" to appear in the gui's lower right corner.
> Suppose that up to now, row 16 is the last row in the gui.  Then this
> works:
> 
>     Button(gui, text="stop").grid(sticky=W)   # starts row 17
>     Button(gui, text="go").grid(row=17, column=1, sticky=E)
> 
> But I don't really want that hardwired row number and I don't want to
> keep counting rows and adjusting stuff if I stick new rows in the gui.
> So I try the obvious, make one Frame widget containing both new buttons:
>     stopgo = Frame(gui)
>     Button(stopgo, "stop").grid(sticky=W)
>     Button(stopgo, "go").grid(sticky=E)
> 
> and try to stretch it across the bottom row of the gui:
> 
>     stopgo.grid(sticky=E+W)
> 
> However, the buttons keep coming out centered in the gui's bottom row
> pretty much no matter what I do (I've tried all sorts of combinations).
> 
> Am I missing something?  I'm not a tkinter whiz and this stuff is
> pretty confusing.  I did come up with an ugly workaround that I'll
> spare you the agony of seeing, but there should be a natural way to do
> this.
> 
> Thanks for any advice.

Sorry to say Paul but you may have to show us that ugly code!  I'm no
whiz with the grid manager (I prefer pack!) but seeing your code will
help us help you

I suspect you need to look at the columnconfigure / rowconfigure methods
of the container (toplevel or frame)


Martin















From timothy at open-networks.net  Mon May  9 01:41:08 2005
From: timothy at open-networks.net (Timothy Smith)
Date: Mon, 09 May 2005 15:41:08 +1000
Subject: computer unable to load _pysvn.pyc
In-Reply-To: <d5ms5h$fku$1@news4.zwoll1.ov.home.nl>
References: <427EC230.1060300@open-networks.net>	<mailman.184.1115604484.29826.python-list@python.org>
	<d5ms5h$fku$1@news4.zwoll1.ov.home.nl>
Message-ID: <427EF7F4.4050009@open-networks.net>

vincent wehren wrote:

>"Timothy Smith" <timothy at open-networks.net> schrieb im Newsbeitrag 
>news:mailman.184.1115604484.29826.python-list at python.org...
>| Timothy Smith wrote:
>|
>| >this is truely maddening
>| >
>| >Traceback (most recent call last):
>| >  File "PubWare.py", line 11, in ?
>| >  File "Main.pyc", line 46, in ?
>| >  File "pysvn\__init__.pyc", line 12, in ?
>| >  File "pysvn\_pysvn.pyc", line 9, in ?
>| >  File "pysvn\_pysvn.pyc", line 7, in __load
>| >ImportError: DLL load failed: A device attached to the system is not
>| >functioning.
>| >
>| >any ideas? it works perfectly on another computer
>| >
>| >
>| ok more information - windows 98 computers have this issue, xp computers
>| are fine.
>| how do i work around this? obviously one of the pysvn dll's won't load
>| on win98.
>
>First, you will need to establish which .dll this is. Than check if the .dll 
>has any dependencies that are not present on the host system (using 
>depends.exe for example) -- i.e. function calls that are not supported.
>
>--
>
>Vincent Wehren
>
>
>| note this is  py2exe package made on a windows xp system
>| 
>
>
>  
>
i think i'll wait for a response from barry scott the maintainer of 
pysvn. buggering around trying to find some dll that it's calling most 
likely won't get me anywhere anyway.
bloody windows - DLL HELL


From temp at mclift.fsnet.co.uk  Wed May 18 14:53:07 2005
From: temp at mclift.fsnet.co.uk (temp at mclift.fsnet.co.uk)
Date: 18 May 2005 11:53:07 -0700
Subject: Markov chain with extras?
In-Reply-To: <428a49bb$0$31079$626a14ce@news.free.fr>
References: <1116278880.976106.191780@o13g2000cwo.googlegroups.com>
	<1116283144.051195.193370@g44g2000cwa.googlegroups.com>
	<1116333014.950383.310040@g44g2000cwa.googlegroups.com>
	<428a49bb$0$31079$626a14ce@news.free.fr>
Message-ID: <1116442387.496825.224140@g49g2000cwa.googlegroups.com>

Hi Tiissa,

Thanks for the reply.

I want to use it for music. So given list 1 (melody), list 2 (chords)
could be generated by a Markov chain. Also, given the chords the melody
could be generated again by a chain.

I haven't had time to play around with your code and as I've only been
studying python for about six months I don't quite understand what's
going on. This might already do what I want, I just need to think in
terms of notes and chords.

Thanks,

Malcolm



From steve at holdenweb.com  Mon May  2 10:51:00 2005
From: steve at holdenweb.com (Steve Holden)
Date: Mon, 02 May 2005 10:51:00 -0400
Subject: Can't get compression in Python zip script.
In-Reply-To: <d55b11+flng@eGroups.com>
References: <d55b11+flng@eGroups.com>
Message-ID: <d55ecm$jrm$1@sea.gmane.org>

deejaay at swbell.net wrote:
> Hello,
> I following an example on how to zip files from the www.devshed.com 
> site.
> I can create a zip package, however I am not getting any compression.
> 120M file stays 120M within the zip package.
> I need to know how to set or activate the compression values.
> here is the code I'm using:
> 
> 
>>import zipfile
>>zip = zipfile.ZipFile('<path/zipfilename.zip>', 'w')
>>zip.write('<path/filename.txt>')
>>zip.close()
> 
> 
> Any help would be gratly appreciated
> 
It's not that difficult. The zipfile module uses null compression by 
deafult, so you need to change the second line to read

zip = zipfile.ZipFile('<path/zipfilename.zip>', 'w', zipfile.ZIP_DEFLATED)

That will create a comrpessed zip file.

regards
  Steve
-- 
Steve Holden        +1 703 861 4237  +1 800 494 3119
Holden Web LLC             http://www.holdenweb.com/
Python Web Programming  http://pydish.holdenweb.com/



From skip at pobox.com  Sun May  1 21:27:16 2005
From: skip at pobox.com (Skip Montanaro)
Date: Sun, 1 May 2005 20:27:16 -0500
Subject: How to kill a SocketServer?
In-Reply-To: <17013.25972.965219.254879@montanaro.dyndns.org>
References: <7xwtqj1lh1.fsf@ruckus.brouhaha.com>
	<mailman.83.1114972348.14961.python-list@python.org>
	<7xpswa4wfu.fsf@ruckus.brouhaha.com>
	<17013.25972.965219.254879@montanaro.dyndns.org>
Message-ID: <17013.33268.775342.385944@montanaro.dyndns.org>


    Paul> Yes, this is precisely what I'm asking.  How do you get the server
    Paul> to go away without going out of your way to connect to it again?
    Paul> Don't you notice if it stays around?

    Skip> It fields lots of requests, so it's possible that another request
    Skip> arrives after I exit, but I don't think that's the case.  I'll try
    Skip> to take a look in isolation when I have a moment.

Here's what I do:

    def serve_forever(self):
        while self.serving:
            r,w,e = select.select([self.socket], [], [], self.pause)
            if r:
                self.handle_request()

and set self.pause to something short-ish.  The select call times out and
the server exits.  Sorry I failed to remember that.  It's been several years
since I modified this code.

Skip



From mru at inprovide.com  Sat May  7 20:35:12 2005
From: mru at inprovide.com (=?iso-8859-1?q?M=E5ns_Rullg=E5rd?=)
Date: Sun, 08 May 2005 02:35:12 +0200
Subject: Language documentation ( was Re: Computing Industry shams)
References: <1115509201.680334.140840@f14g2000cwb.googlegroups.com>
	<874qdezh76.fsf@kafka.homenet>
Message-ID: <yw1xr7gih7wf.fsf@ford.inprovide.com>

vermicule <rambam at bigpond.net.au> writes:

> "Xah Lee" <xah at xahlee.org> writes:

[...]

>
> It seems to me that you want the Python doc to be written for morons.

Not for morons, but for trolls.  Don't feed them.

-- 
M?ns Rullg?rd
mru at inprovide.com


From duncan.booth at invalid.invalid  Tue May 17 07:52:05 2005
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 17 May 2005 11:52:05 GMT
Subject: \r functionality
References: <1116325048.303756.222070@z14g2000cwz.googlegroups.com>
Message-ID: <Xns96598219F4CDCduncanbooth@127.0.0.1>

Jake wrote:

> in c and c++ there is a useful way to refresh an output line in printf
> and cout using \r meta command. So for example in the wget application
> the progress of the download is updated on the same output line of the
> screen. From an intital investigation python seems to lack this. Is
> this correct?
> 

>>> for i in range(10000):
...   print '\r',i,'and counting',
...
9999 and counting

(not obvious from the copy/paste of the output is that it also displayed 
the intervening numbers as it counted). The important thing is to end each 
print statement with a comma (or use sys.stdout.write).


From mark.oboyle at verizon.net  Wed May 11 16:49:59 2005
From: mark.oboyle at verizon.net (mark)
Date: Wed, 11 May 2005 20:49:59 GMT
Subject: Jesus said, "I am the way,
	the truth and the life: no one can come to the Father(God)(in Heaven),
	but by me." (John 14:6) This means that if you die without trusting in
	Jesus Christ as your Lord and Saviour you will die in your sins
	and be forever sepa
References: <1115824563.613661.169620@g47g2000cwa.googlegroups.com>
	<M%qge.1317047$Xk.244810@pd7tw3no> <3eeta6F2m45kU1@individual.net>
	<1115832484.237918.53830@o13g2000cwo.googlegroups.com>
	<3eevb8F2pac7U1@individual.net> <z_sge.1317829$8l.585908@pd7tw1no>
Message-ID: <Xduge.267$bO4.200@trndny02>

I,too,gave semen from the mount. mark
"don freeman" <dfreem3 at nospam.shaw.ca> wrote in message 
news:z_sge.1317829$8l.585908 at pd7tw1no...
>>
>> I suppose he could point at what he saw and wither it.
>>
>
> Jesus would then give a sermon from the mount:
>
> Let the Puritans wear fig leaves over their eyes!
> 




From flupke at nonexistingdomain.com  Thu May 26 18:56:48 2005
From: flupke at nonexistingdomain.com (flupke)
Date: Thu, 26 May 2005 22:56:48 GMT
Subject: using timeit for a function in a class
In-Reply-To: <mailman.138.1117118325.18027.python-list@python.org>
References: <ZFjle.101596$KL7.6197297@phobos.telenet-ops.be>
	<mailman.138.1117118325.18027.python-list@python.org>
Message-ID: <Qusle.102302$h05.6039656@phobos.telenet-ops.be>

Fredrik Lundh wrote:
> "flupke" wrote:
> 
> 
>>i tried to use timeit on a function in a class but it doesn't do what i
>>think it should do ie. time :)
>>In stead it starts printing line after line of hello time test!
>>What am i doing wrong in order to time the f function?
> 
> 
> how do you expect timeit to figure out how long it takes to run your
> function without calling the function?
> 
> 
>>class TimeTest(object):
>>    def f(self):
>>        print "hello time test!"
> 
> 
> </F> 
> 
> 
>

? i think you missed some of the code
...
     s = """
     test = TimeTest()
     test.f()
     """
...

So the function is being called (as i said, it prints the hello message).

Regards,
Benedict


From lbates at syscononline.com  Wed May  4 13:01:11 2005
From: lbates at syscononline.com (Larry Bates)
Date: Wed, 04 May 2005 12:01:11 -0500
Subject: FTP/TLS connection using python
In-Reply-To: <1115225185.951540.128460@z14g2000cwz.googlegroups.com>
References: <1115225185.951540.128460@z14g2000cwz.googlegroups.com>
Message-ID: <4278FFD7.3060200@syscononline.com>

I don't have direct experience by Google turned this up:

http://trevp.net/tlslite/

Larry Bates


scrimp wrote:
> Hello,
>    I was wondering if there is any other way to securly connect to an
> FTP site using SSL or TLS? I dont have the option of purchasing
> M2Crypto from the site. Any help/suggestions would help. Thanks!
> 
> --Barry
> 


From yamadora1999 at naver.com  Tue May 24 20:56:15 2005
From: yamadora1999 at naver.com (yamadora1999)
Date: 24 May 2005 17:56:15 -0700
Subject: How to use protocols.msn.FileSend and protocols.msnFileReceive
References: <97627ec1.0505231945.79a90eaf@posting.google.com>
Message-ID: <97627ec1.0505241656.50241abb@posting.google.com>

yamadora1999 at naver.com (yamadora1999) wrote in message news:<97627ec1.0505231945.79a90eaf at posting.google.com>...
> How to use protocols.msn.FileSend and FileReceive?
> Please show me a example.

I am very sorry. :)


From irmen.NOSPAM at xs4all.nl  Sat May 28 17:50:09 2005
From: irmen.NOSPAM at xs4all.nl (Irmen de Jong)
Date: Sat, 28 May 2005 23:50:09 +0200
Subject: Comparing 2 similar strings?
In-Reply-To: <4298D9EF.80805@rob.hooft.net>
References: <24a6d$428b9c10$d1b717f8$2300@PRIMUS.CA><428c0d21$1@nntp0.pdx.net>
	<1116487353.934354.195940@g43g2000cwa.googlegroups.com>
	<3k4gm2-9pk.ln1@home.rogerbinns.com> <4298D9EF.80805@rob.hooft.net>
Message-ID: <4298e792$0$150$e4fe514c@news.xs4all.nl>

Rob W. W. Hooft wrote:
> After reading this thread, I have wrapped up a different approach, 
> probably not what you were looking for, but it is very good for what I 
> wanted: comparing a command string typed by a user with all possible 
> commands a program can accept, to be able to do typo-correction. The 
> method will return a floating point number between 0.0 (no match) and 
> len(s)+1.0 (if the strings are exactly equal). You can see the score as 
> "the number of equal letters".
[...]
Interesting, but the result is a bit puzzling.
Wouldn't it be easier if it is normalized to a float between 0.0 and 1.0?

Furthermore, I can also produce wrong(?) results:

$ python comparestrings.py
s1: test
s2: x
Score: -0.4

Minus 0.4... Is this a bug?

--Irmen


From dlegault at vantpoint.com  Sun May 22 16:07:24 2005
From: dlegault at vantpoint.com (David)
Date: Sun, 22 May 2005 20:07:24 +0000 (UTC)
Subject: libpython2.3.a Linux
Message-ID: <loom.20050522T220129-793@post.gmane.org>

Hello,

I'm trying to build a python module in the form of an .so file but I keep 
getting the following message :

/usr/bin/ld cannot find -llibpython2.3

I have all the necessary files in /usr/local/src/Python-2.3.5

with libpython2.3.a and libpython2.3.so files

g++ -I /usr/local/src/Python-2.3.5/Include -L /usr/local/src/Python-2.3.5 -
shared -fPIC -l libpython2.3 -o file.so

Running on Fedora Core 3 - 1.7.0

made the following steps in compiling and installing Python :

./configure
make
make install
make libpython2.3.so

Compiling on windows 2k is fine.

Thanks for any input.

David





From frankabel at tesla.cujae.edu.cu  Mon May 23 16:13:07 2005
From: frankabel at tesla.cujae.edu.cu (Frank Abel)
Date: Mon, 23 May 2005 13:13:07 -0700
Subject: concurrent access to object file
Message-ID: <002e01c55fd3$d5944790$7b0e10ac@hegel>

Hi all!
I will build a HTTPServer and dislike that one request is handled at a time
(synchronous). So I write:

class MyHTTPServer(SocketServer.ThreadingMixIn, BaseHTTPServer.HTTPServer):
    ....
    ....

For log the request and error I create a file and atteched it to the server
instance. Then the file log object can be see at RequestHandler instance
("self.server.log_file"). I overwrite in MyHTTPRequestHandler the methods
"log_message" to write instead of "sys.stderr" in my log file
"self.server.log_file".

My question is: Is posible that the log file crash (merge lines or some
other things) if two or more thread try to write in it "simultaneously" or
the write method of file object has a lock that prevent this?

Some other suggestion to get the aproach painted above?

Thank in advance
Frank







From wuwei23 at gmail.com  Wed May 18 20:59:33 2005
From: wuwei23 at gmail.com (alex23)
Date: 18 May 2005 17:59:33 -0700
Subject: Python on a public library computer
In-Reply-To: <1116417677.506240.261730@g47g2000cwa.googlegroups.com>
References: <1116069664.779281.320540@g47g2000cwa.googlegroups.com>
	<87r7g6rbz0.fsf@pobox.com>
	<mailman.67.1116286093.8733.python-list@python.org>
	<1116330665.197293.198950@o13g2000cwo.googlegroups.com>
	<861x858qav.fsf@guru.mired.org>
	<1116417677.506240.261730@g47g2000cwa.googlegroups.com>
Message-ID: <1116464373.016279.13030@f14g2000cwb.googlegroups.com>

> It's a thin line between philosophy, fear of breaking the rules and
> having the security personnel throw me out of here, and trying to
live
> in a just world.

You forgot "and making the lives of those maintaining the public
terminal more difficult".

You know, there _are_ valid reasons for libraries et.al. 'locking down'
public terminals other than fascism...

-alex23



From peter at engcorp.com  Fri May  6 16:33:37 2005
From: peter at engcorp.com (Peter Hansen)
Date: Fri, 06 May 2005 16:33:37 -0400
Subject: min max of a list
In-Reply-To: <1115408190.437054.222350@z14g2000cwz.googlegroups.com>
References: <1115245476.036508.273930@g14g2000cwa.googlegroups.com>
	<gaCdnf8Pf9xj7-TfRVn-tQ@comcast.com>
	<1115259992.558123.189580@g14g2000cwa.googlegroups.com>
	<temdnRBabsR2_effRVn-gg@comcast.com>
	<1115396805.064114.183010@f14g2000cwb.googlegroups.com>
	<JNCdnYvdNOGEJ-bfRVn-vQ@comcast.com>
	<1115408190.437054.222350@z14g2000cwz.googlegroups.com>
Message-ID: <ANOdnZL8Q61cSebfRVn-jw@powergate.ca>

querypk at gmail.com wrote:
> I get a syntax error in  :
> 
>  py> [(min((abs(p - v), v) for v in valleys + [0] if v < p)[1],
> ...   p,
> ...   min((abs(p - v), v) for v in valleys if v > p)[1])
> ...  for p in peaks]

I think we already covered the part where you were using an older 
version of Python.  In this case, the missing feature is "generator 
expressions" and they are inside the two min() calls.

You might want to consider upgrading...

-Peter


From magicmas at spymac.com  Sat May 28 01:56:56 2005
From: magicmas at spymac.com (cheng)
Date: 27 May 2005 22:56:56 -0700
Subject: a re problem
Message-ID: <1117259816.620245.34790@g43g2000cwa.googlegroups.com>

hi,all, i try to replace every target word found in the text

 for target in splitText:
        if stopwords.find(target) >= 0 :
            text = re.sub(r'\b%s\b','',text) &target

when i using the statment:

text = re.sub(r'\b%s\b','',text) &target

 get error : unsupported operand type(s) for &: 'str' and 'str'

is it some idea that can modity it and make it work?



From danb_83 at yahoo.com  Tue May  3 22:45:26 2005
From: danb_83 at yahoo.com (Dan Bishop)
Date: 3 May 2005 19:45:26 -0700
Subject: control precision for str(obj) output?
References: <d598rq$8fj$1@joe.rice.edu>
Message-ID: <1115174726.753836.303790@z14g2000cwz.googlegroups.com>

Bo Peng wrote:
> Dear list,
>
> I have enjoyed the convenience to output any object with str(obj) for
a
> while. However, I get long output for things like str([0.0002]) in my

> output (which bothers my users more than me though). I also do not
> understand why the following is happening:
>
>  >>> str([0.0002])
> '[0.00020000000000000001]'
>  >>> str(0.0002)
> '0.0002'

Floats make a distinction betwen repr and str: repr(x) uses 17
significant digits (to ensure that repr(1.0) and repr(1.0+epsilon) are
distinct, while str(x) uses only 12 (to produce more user-friendly
output).

For lists, repr(x) calls repr(x[i]) for each of its elements.  Just
what you'd expect.

But lists, unlike floats, do *not* make a distinction between str and
repr; i.e. str(x) == repr(x).  The main reason for doing it this way
was to avoid confusion in cases like str(["1, 2", 3]): If list.__str__
were implemented like the list_str function below, the result would
look like a list of 3 ints instead of a string and an int.

The unfortunate side effect of this is to make str(list of floats)
ugly, but...

> Is there any way to fix this, other than checking the type of
everything
> and output with %.4f?
 
def list_str(x):
    return '[%s]' % ', '.join(map(str, x))



From martijn at gamecreators.nl  Mon May  9 10:25:30 2005
From: martijn at gamecreators.nl (martijn at gamecreators.nl)
Date: 9 May 2005 07:25:30 -0700
Subject: include "apythonscript.py"
Message-ID: <1115648730.390588.158760@z14g2000cwz.googlegroups.com>

H!

I'm trying to find a python function to use like this:

-- maincode.py

Include "apythonscript_function.py"

-- end

So I can split the maincode.py file in smalle pieces.
Or yust save the function's in other file and include them once.
I really want to use this because else { the maincode.py will be super
super large. }

Thanks,
GC-Martijn

----- if you don't understand what I mean: http://www.php.net/include



From querypk at gmail.com  Wed May  4 18:24:36 2005
From: querypk at gmail.com (querypk at gmail.com)
Date: 4 May 2005 15:24:36 -0700
Subject: min max of a list
Message-ID: <1115245476.036508.273930@g14g2000cwa.googlegroups.com>

If this is the list.

values = [  0,  72,   0,   4,   9,   2,   0,   0,  42,  26,   0, 282,
23,   0, 101, 0,   0,   0,   0,   0]

as we can see there are peaks in the list.that is 0,72,0 is a
group(triangle) with peak 72.then 0,   4,   9,   2,   0,   0 with peak
9 and 0,  42,  26,   0 with 42 and so on...
what I want is the left and right bound index of each bin(triangle).The
list could as big as possible.So some heurestic algorithm which could
first find max in the list and look for local maxima and minima and
group its adjcent bounds.Then find next max and group the bins and so
on.

so that we can get

[[0,2],[2,7],[7,10],[10,13]]
( indexes of the bounds in the values list). so first group [0,2]
correspond to 0,72,0 in the values list and so on...
Hope I am clear.



From mwm at mired.org  Sun May 29 23:43:32 2005
From: mwm at mired.org (Mike Meyer)
Date: Sun, 29 May 2005 22:43:32 -0500
Subject: prime number
References: <1117421732.677244.237730@g49g2000cwa.googlegroups.com>
Message-ID: <86wtphtm3f.fsf@guru.mired.org>

"lostinpython" <shanna_perkins_02 at hotmail.com> writes:
> I'm having trouble writing a program that figures out a prime number.
> Does anyone have an idea on how to write it?  All I know is that n > 2
> is prim if no number between 2 and sqrt of n (inclusivly) evenly
> divides n.

How about this (untested):

import sys
import subprocess

primes = subprocess.Popen(["primes", sys.argv[1], sys.argv[1]],
                        stdout=subprocess.PIPE).stdout.readlines()
if primes:
   print sys.argv[1], "prime"
else:
   print sys.argv[1], "not prime"

Seriously, this sounds like a homework assignment. Google for "sieve
of eratosthenes". The BSD "primes" program I used in the above is an
implementation of that in C.

If it isn't a homework assignment, and you're honestly in such, then
you should know there's been a lot of research in this area, because
primes are important in cryptographic applications. Once again, google
is a good place to start on looking for recent research on the subject.

   <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From jerf at jerf.org  Thu May  5 23:36:05 2005
From: jerf at jerf.org (Jeremy Bowers)
Date: Thu, 05 May 2005 23:36:05 -0400
Subject: How to detect a double's significant digits
References: <1115314620.902071.323410@f14g2000cwb.googlegroups.com>
	<dOtee.706030$w62.64217@bgtnsc05-news.ops.worldnet.att.net>
	<pan.2005.05.05.20.32.38.680014@jerf.org>
	<117lmgrjssnlf04@corp.supernews.com>
	<pan.2005.05.06.03.02.05.806769@jerf.org>
	<mKmdndA5g-xYQuffRVn-rA@speakeasy.net>
Message-ID: <pan.2005.05.06.03.36.05.975556@jerf.org>

On Thu, 05 May 2005 20:08:46 -0700, Erik Max Francis wrote:
> Grant's point was that as significance is used in scientific studies,
> there's no way to answer the question without having the number in
> advance.

My point was that the original poster never defined "significance" in that
manner, and in the manner in which he seemed to be using the term, my
comments made sense. Which is why the first thing I said was he needs to
rigorously define what he means, and everything after that was predicated
on the assumption he seemed to be looking at consumed screen space.


From michele.simionato at gmail.com  Tue May 17 04:58:26 2005
From: michele.simionato at gmail.com (Michele Simionato)
Date: 17 May 2005 01:58:26 -0700
Subject: Quick Reference from module doc strings.
In-Reply-To: <mailman.27.1116217027.8733.python-list@python.org>
References: <mailman.65.1116085574.29328.python-list@python.org>
	<1116199904.205240.58300@g49g2000cwa.googlegroups.com>
	<mailman.15.1116204313.8733.python-list@python.org>
	<42880d98$1@nntp0.pdx.net>
	<mailman.27.1116217027.8733.python-list@python.org>
Message-ID: <1116320306.737808.313530@g44g2000cwa.googlegroups.com>

> Do you have any feature suggestions, additional information that
could
> go in, something that would extend the content in some way and make
it
> more useful?

I have written something similar which I use all the time. It generates
ReST
output which I can browse with "less" from the command line, as well as
HTML
output and PDF output that I can print. The hard work is done by
docutils, of course.
I have options to specify if I want to least private names or not, and
to specify
if I want an analytical index to be generated or not. Also, the HTML
output
contains hyperlinks to the original source code, so I can see  it with
a click.
I can feed to "minidoc" whole packages (it works recursively on
subpackages, so everything is documented).

It was unvaluable in my struggle with Zope.

            Michele Simionato



From __peter__ at web.de  Sun May  1 08:34:01 2005
From: __peter__ at web.de (Peter Otten)
Date: Sun, 01 May 2005 14:34:01 +0200
Subject: Numeric/Numarray equivalent to zip ?
References: <1114849922.518669.105590@l41g2000cwc.googlegroups.com>
	<d51uv7$9hj$03$1@news.t-online.com>
	<1114948757.585835.8180@z14g2000cwz.googlegroups.com>
Message-ID: <d52iao$169$05$1@news.t-online.com>

George Sakkis wrote:

> Though not the fastest to execute; using concatenate instead of
> initializing an array from a list [a,a] is more than 2,5 time faster in
> my system (~4.6 vs 11.8 usec per loop according to timeit.py), and it's
> not harder either. 

That surprises me. I would expect essentially the same amount of
data-shuffling.

> One difference is that the equivalent expression for 
> concatenate expects arrays of shape (1,len(a)) instead of 1D arrays os
> shape (len(a),):

If you want to start out with 1D arrays, just reorder the operations: 

>>> a = array(range(5))
>>> reshape(concatenate((a, a)), (2, 5))
array([[0, 1, 2, 3, 4],
       [0, 1, 2, 3, 4]])
>>>

Peter


From x at jwp.name  Sat May 28 02:41:32 2005
From: x at jwp.name (James William Pye)
Date: Fri, 27 May 2005 23:41:32 -0700
Subject: Software licenses and releasing Python programs for review
References: <1117245014.218831.317750@g14g2000cwa.googlegroups.com>
Message-ID: <pan.2005.05.28.06.41.32.897652@jwp.name>

On Fri, 27 May 2005 18:50:14 -0700, poisondart wrote:
> - being able to distribute it freely, anybody can modify it
> - nobody is allowed to make profit from my code (other than myself)

Terry mentioned OS.org, so I will not repeat that. (opensource.org)

Also, check out http://creativecommons.org.

The no-commercial use license sounds like it might be what you are looking
for. (http://creativecommons.org/licenses/by-nc/2.0/)


From joerg.schuster at gmail.com  Wed May 25 07:52:20 2005
From: joerg.schuster at gmail.com (Joerg Schuster)
Date: 25 May 2005 04:52:20 -0700
Subject: open file in dir independently of operating system
In-Reply-To: <1117021114.316734.117480@o13g2000cwo.googlegroups.com>
References: <1117021114.316734.117480@o13g2000cwo.googlegroups.com>
Message-ID: <1117021940.895090.17440@o13g2000cwo.googlegroups.com>

Thanks, Andrew and Gerald.

J?rg



From newpip at gmail.com  Mon May 16 04:58:38 2005
From: newpip at gmail.com (new pip)
Date: Mon, 16 May 2005 16:58:38 +0800
Subject: Detect console close
Message-ID: <bccb89280505160158dbc4a0b@mail.gmail.com>

>
>
>new pip wrote:
>> In Windows, when I double click on my .py file, the program runs with
>> a console. How can I detect when the console is closed? Any code
>> samples are appreciated.
>
>When the console has closed, your program has already exited, if I 
>understand you correctly (which isn't certain: the question seems 
>vague).  How would you expect to "detect" this with code if your code is 
>no longer running?
>
>Maybe you should also explain what you're really trying to accomplish, 
>as there maybe other ways of doing it, or other solutions to your problem.
>
>-Peter
>-- 
>http://mail.python.org/mailman/listinfo/python-list

Hi,

Actually I want to do some clean up (or operation) before the program
actually exits. Is there any way to do that?

Thank you.


From bogus@does.not.exist.com  Fri May 13 10:25:01 2005
From: bogus@does.not.exist.com ()
Date: Fri, 13 May 2005 14:25:01 -0000
Subject: No subject
Message-ID: <mailman.49.1572218208.3356.python-list@python.org>

#! rnews 2528
Newsgroups: comp.lang.python
Path: news.xs4all.nl!newsspool.news.xs4all.nl!transit.news.xs4all.nl!news-spur1.maxwell.syr.edu!news.maxwell.syr.edu!nntp.abs.net!attws2!ip.att.net!NetNews1!xyzzy!nntp
From: Harry George <harry.g.george at boeing.com>
Subject: Re: String formatting strangeness
X-Nntp-Posting-Host: cola2.ca.boeing.com
Content-Type: text/plain; charset=us-ascii
Message-ID: <xqx8y2jrzoo.fsf at cola2.ca.boeing.com>
User-Agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.4
Lines: 55
Sender: hgg9140 at cola2.ca.boeing.com
Organization: The Boeing Company
References: <1115990147.880532.61730 at o13g2000cwo.googlegroups.com>
Mime-Version: 1.0
Date: Fri, 13 May 2005 14:03:03 GMT
Xref: news.xs4all.nl comp.lang.python:377190

dark.ryder at gmail.com writes:

> I must be doing something wrong, but for the life of me, I can't figure
> out what.  Here's the code snippet which is giving me grief:
> 
> print type(number), type(name), type(seconds // 60), type(seconds % 60)
> print "\t\t\t<section number=\"%i\" title=\"%s\" length=\"%i:%i\"/>\n"
> % [number, name, seconds // 60, seconds % 60]
> 
> (These are lines 49 and 50 of the script; I can post the whole thing if
> someone wants, but I think this is enough to see why it's driving me
> nuts.)
> 
> And the output:
> 
> <type 'int'> <type 'str'> <type 'int'> <type 'int'>
> Traceback (most recent call last):
>   File "X:\Music (FLAC)\Post-process new rips.py", line 50, in ?
>     print "\t\t\t<section number=\"%i\" title=\"%s\"
> length=\"%i:%i\"/>\n" % [number, name, seconds // 60, seconds % 60]
> TypeError: int argument required
> 
> Wait, what?  The first line clearly identifies that the the first,
> third, and fourth elements are all integers, yet the error says that
> *lack* of integers is the problem.  If I change all "%i"s to "%d", I
> get the same problem, and changing to "%s" (hey, it was worth a shot)
> gives "TypeError: not enough arguments for format string" instead.
> Huh?  I see four placeholders and a four-element tuple.
> 
> Can anyone enlighten me here?
> 

I notice you used a list instead of a tuple.   
Changing to a tuple gives the desired output:

number=1
name="myname"
seconds=250
print "\t\t\t<section number=\"%i\" title=\"%s\" length=\"%i:%i\"/>\n" \
    % (number, name, seconds // 60, seconds % 60)
			
<section number="1" title="myname" length="4:10"/>

I have no idea why a list has that effect.

PS:  When writing XML and HTML, I use single quotes, so I don't have to 
escape double quotes:
print '\t\t\t<section number="%i" title="%s" length="%i:%i"/>\n' \
    % (number, name, seconds // 60, seconds % 60)


-- 
harry.g.george at boeing.com
6-6M21 BCA CompArch Design Engineering
Phone: (425) 294-4718


From dieter at handshake.de  Sun May 22 14:11:42 2005
From: dieter at handshake.de (Dieter Maurer)
Date: 22 May 2005 20:11:42 +0200
Subject: python24.zip
References: <mailman.249.1116595092.8733.python-list@python.org>
	<428e0cc3$0$29954$9b622d9e@news.freenet.de>
	<x7hdgw2zqi.fsf@handshake.de>
	<428faddd$0$26322$9b622d9e@news.freenet.de>
Message-ID: <x7vf5bku5d.fsf@handshake.de>

"Martin v. L?wis" <martin at v.loewis.de> writes on Sat, 21 May 2005 23:53:31 +0200:
> Dieter Maurer wrote:
> ...
> > The question was:
> > 
> >    "should python start up with **non-existent** objects on the path".
> > 
> > I think there is no reason why path needs to contain an object
> > which does not exist (at the time the interpreter starts).
> 
> There is. When the interpreter starts, it doesn't know what object
> do or do not exist. So it must put python24.zip on the path
> just in case.

Really?

Is the interpreter unable to call "C" functions ("stat" for example)
to determine whether an object exists before it puts it on "path".

> Yes, but the interpreter cannot know in advance whether
> python24.zip will be there when it starts.

Thus, it checks dynamically when it starts.

> > I recently analysed excessive import times and
> > saw thousands of costly and unneccesary filesystem operations due to:
> 
> Hmm. In my Python 2.4 installation, I only get 154 open calls, and
> 63 stat calls on an empty Python file. So somebody must have messed
> with sys.path really badly if you saw thoughsands of file operations
> (although I wonder what operating system you use so that failing
> open operations are costly; most operating systems should do them
> very efficiently).

The application was Zope importing about 2.500 modules
from 2 zip files "zope.zip" and "python24.zip".
This resulted in about 12.500 opens -- about 4 times more
than would be expected -- about 10.000 of them failing opens.


Dieter


From graham.fawcett at gmail.com  Sat May 28 00:02:14 2005
From: graham.fawcett at gmail.com (Graham  Fawcett)
Date: 27 May 2005 21:02:14 -0700
Subject: the problem wtih cgi
In-Reply-To: <1117250714.387429.73450@g44g2000cwa.googlegroups.com>
References: <1117250714.387429.73450@g44g2000cwa.googlegroups.com>
Message-ID: <1117252934.269495.304520@g43g2000cwa.googlegroups.com>

chris patton wrote:
> Hi everyone.
>
> Has anyone seen that problem with running a python cgi script in a
> server?
> It takes you to myspace.com/redmartian or something. Anyway, does
> anyone know when this problem will be fixed?

It could be solved much sooner if you follow these steps:

(1) Carefully read http://www.catb.org/~esr/faqs/smart-questions.html
(2) consider how your original question reads to an audience that
doesn't know anything about your script or your server
(3) Based on (1) and (2), reformulate your question
(4) When you post your revised question, be sure to include your CGI
script's code.

-- Graham



From vincent at visualtrans.de  Sat May 14 08:04:32 2005
From: vincent at visualtrans.de (vincent wehren)
Date: Sat, 14 May 2005 14:04:32 +0200
Subject: Multiple "cmp"s chained one after another
References: <d64io9$s6o$05$1@news.t-online.com>
Message-ID: <d64pgi$tc8$1@news2.zwoll1.ov.home.nl>


"Volker Grabsch" <volker_grabsch at v.notjusthosting.com> schrieb im 
Newsbeitrag news:d64io9$s6o$05$1 at news.t-online.com...
| Hello!
|
| Ich just found a very nice 'pythonic' solution for an often appearing
| problem. I didn't find it documented anywhere, so I'm posting it here.
| If this isn't new in any way, I'd really like to get to know it.
|
| Example problem:
| I have some "datetime" objects and want to sort them, as here:
|
| birthdays = [d1,d2,d3,d4]
| birthdays.sort()
|
| However, I don't want to sort them the default way. These are birthdays,
| so only the month and day do matter, not the year. E.g.:
|
| 2003-01-01  should be smaller than  1984-05-01
|
| So I have to write the comparison on my own, e.g.
|
| def cmp_birthdays(d1,d2):
| if d1.month > d2.month: return 1
| if d1.month < d2.month: return -1
| if d1.day > d2.day: return 1
| if d1.day < d2.day: return -1
| return 0
|
| ...
| birthdays.sort(cmp_birthdays)


If you don't care about the year, why not just "normalize" the year
to all be the same using the replace method of the date instance?
Something like:

d1 = datetime.date(2004, 12, 2)
d2 = datetime.date(2001, 12, 3)
d3 = datetime.date(2002, 12, 6)
d4 = datetime.date(1977, 12, 7)
dates =[d1,d2,d3,d4]
datesNorm = [obj.replace(year=1900) for obj in (dates)]
datesNorm.sort()
print datesNorm # etcetera


HTH,

---
Vincent




|
| This implementation of cmp_birthdays is very ugly. Image you want to
| chain more than 2 values in that "cmp_birthdays". I also want to use the
| builtin "cmp" function, not ">" and "<".
|
| After thinking some minutes about it, I found a very nice solution:
| I have some "cmp"s one aftter another. If one if them return 1 oder -1,
| it sould be returned. If it returns 0, the next "cmp" is used. In other
| words: I have a sequence of numbers, and want to get the first one that
| is not 0. (or return 0, if all numbers were 0)
|
| But this is exactly what the "or" operator does, due to short-circuit
| evaluation. In this example, that means:
|
| def cmp_bithdays(d1,d2):
| return cmp(d1.month,d2.month) or cmp(d1.day,d2.day)
|
| The generic pattern is:
|
| return cmp(...) or cmp (...) or cmp(...) or ...
|
| I'm not sure whether this pattern is already a "common recipe", but
| I found it to be a very nice idea. :-)
|
| Any opinions?
|
|
| Greets,
|
| Volker
|
| -- 
| Volker Grabsch
| ---<<(())>>---
| \frac{\left|\vartheta_0\times\{\ell,\kappa\in\Re\}\right|}{\sqrt
| [G]{-\Gamma(\alpha)\cdot\mathcal{B}^{\left[\oint\!c_\hbar\right]}}} 




From swaroopch at gmail.com  Tue May  3 05:54:44 2005
From: swaroopch at gmail.com (Swaroop C H)
Date: Tue, 3 May 2005 15:24:44 +0530
Subject: Python & SQLite
In-Reply-To: <d57g8v$n4c$1@sunce.iskon.hr>
References: <d57g8v$n4c$1@sunce.iskon.hr>
Message-ID: <351e8871050503025477cb7139@mail.gmail.com>

On 5/3/05, Pajo <pajo at pajo.com> wrote:
> What should I install so I can connect to sqlite from
> Python.
> One simple example would be very helpfull.

You haven't mentioned which operating system you are using.

For Windows, PySQLite binaries are available at
http://initd.org/tracker/pysqlite
For Linux/BSD, use your favorite package management software (yum in
Fedora, urpmi in Mandrake, emerge in Gentoo, apt-get in Debian,
pkg_add in FreeBSD), etc.
For Mac, use Fink.

HTH :-)
-- 
Swaroop C H
Blog: http://www.swaroopch.info
Book: http://www.byteofpython.info


From gmayer at cs.bgu.ac.il  Thu May 19 10:04:37 2005
From: gmayer at cs.bgu.ac.il (Mayer)
Date: 19 May 2005 07:04:37 -0700
Subject: help with generators
In-Reply-To: <1116494846.500522.31920@g47g2000cwa.googlegroups.com>
References: <1116461870.130411.9280@g43g2000cwa.googlegroups.com>
	<hd-dnbBAGZJPgxHfRVn-rA@comcast.com>
	<1116494846.500522.31920@g47g2000cwa.googlegroups.com>
Message-ID: <1116511477.475647.92300@g47g2000cwa.googlegroups.com>

Thanks a lot! This clarified [I think] my misunderstanding about yield,
and I also learned something about efficiency from George's code --
Thanks.

So, The function tel(aString) takes a string (or a number) that denote
a phone number, using digits or letters, and returns a generator for
the set of all possible words that are made up of that phone number.
It's not a terribly useful program, but it's short and it's a lot of
fun.

Mayer

import string

def addKeyString(keyString):
    for ch in keyString:
        keypad[ch] = keyString

keypad = {}
addKeyString('0')
addKeyString('1')
addKeyString('2ABC')
addKeyString('3DEF')
addKeyString('4GHI')
addKeyString('5JKL')
addKeyString('6MNO')
addKeyString('7PQRS')
addKeyString('8TUV')
addKeyString('9WXYZ')

def tel(phone):
phoneString = str(phone)
    length = len(phoneString)
    buffer = [Null] * length
    def run(n):
        if n == length:
            yield string.join(buffer, '')
        else:
            for word in run(n + 1):
                for letter in keypad[phoneString[n]]:
                    buffer[n] = letter
                    yield buffer
    return run(0, '')



From Sebastien.Boisgerault at gmail.com  Sat May 14 05:35:42 2005
From: Sebastien.Boisgerault at gmail.com (=?iso-8859-1?q?S=E9bastien_Boisg=E9rault?=)
Date: 14 May 2005 02:35:42 -0700
Subject: 80 bit precision ?
In-Reply-To: <mailman.56.1116048599.29328.python-list@python.org>
References: <20050514003732.GA4225@mrna.tn.nic.in>
	<mailman.56.1116048599.29328.python-list@python.org>
Message-ID: <1116063342.525582.269830@g14g2000cwa.googlegroups.com>

Terry Reedy a ?crit :
> [...]
> Last I read, in CPython, the float type encapsulates a C double.
> So, does any C compiler implements doubles as 80 bit floats?

I seriously doubt it.

> Or, if it has 64 bit
> doubles and 80 bit long doubles, are the latter transparently
> substitutible for the former, so that you could change Python's
> float declaration and have everything work as expected?  (I an
> not sure of either.)

Mmmmmm ... the python C code implementing the math module is
probably not that polymorphic <wink>. Even a call to "sqrt"
does not work as expected if the argument is a long double.
"sqrtl" should be use instead.

Cheers,

SB



From tjreedy at udel.edu  Tue May 10 22:02:08 2005
From: tjreedy at udel.edu (Terry Reedy)
Date: Tue, 10 May 2005 22:02:08 -0400
Subject: Solipsis: Python-powered Metaverse
References: <d5qqo7$3dc$1@sea.gmane.org> <4280F03E.2070903@kzoo.edu>
Message-ID: <d5roks$u2a$1@sea.gmane.org>


"Joseph Garvin" <k04jg02 at kzoo.edu> wrote in message 
news:4280F03E.2070903 at kzoo.edu...
> Terry Reedy wrote:
>
>>Today I followed a link to an interesting Python application I have not
>>seen mentioned here before: 
>>http://solipsis.netofpeers.net/wiki/HomePage/.

> I was looking at this earlier today because I was curious how they were
> going to handle performance concerns (both due to Python and bandwidth).
> I'm having trouble understanding all of the details -- what is the
> significance of the use of a torus for the world space? Does this
> somehow help in the computation of the convex hull?

I can only guess alone with you, but it certainly makes the distance 
calculation needed to identify people in your local area, or a neighbor's 
local area, both simple and uniform (the usual Euclidean formula).  In 
other words, a large torus make everyplace locally flat with normal 
orthogonal coordinates.  On a sphere, you have problems near the poles. 
Several game worlds have had the same double-wraparound topography.

Terry J. Reedy





From whoami_1972 at tom.com  Tue May 10 07:36:07 2005
From: whoami_1972 at tom.com (Whoami)
Date: Tue, 10 May 2005 19:36:07 +0800
Subject: Module on Getting the Date & Time
Message-ID: <20050510132804.D0B791E4003@bag.python.org>

Simon Brunning,???


>>> import time
>>> current = time.time()
>>> time.localtime(current)
(2005, 5, 10, 19, 28, 14, 1, 130, 0)
>>> time.ctime(current)
'Tue May 10 19:28:14 2005'

======= 2005-05-10 19:09:42 ????????=======

>On 5/10/05, Sara Khalatbari <sarapythonlist at yahoo.com> wrote:
>> Is there a Modules in Python that returns the time &
>> date of today when ran?
>
>http://www.google.com/search?q=python+time+date
>
>-- 
>Cheers,
>Simon B,
>simon at brunningonline.net,
>http://www.brunningonline.net/simon/blog/
>-- 
>http://mail.python.org/mailman/listinfo/python-list
>

= = = = = = = = = = = = = = = = = = = =
			

?????????
??
 
				 
????????Whoami
????????whoami_1972 at tom.com
??????????2005-05-10


From zsolt-public4516 at mailblocks.com  Thu May 19 12:09:11 2005
From: zsolt-public4516 at mailblocks.com (zsolt-public4516 at mailblocks.com)
Date: 19 May 2005 09:09:11 -0700
Subject: newbie running IDLE with command line arguments
References: <1116349009.098767.317970@g44g2000cwa.googlegroups.com>
	<YOGie.1263$wb2.847@newssvr11.news.prodigy.com>
Message-ID: <1116518951.392805.236100@z14g2000cwz.googlegroups.com>

Hmm, I submitted an earlier message, but something seems to have gone
wrong.

Try this:

import sys

usingIdle = 0

for eachPath in sys.path:
    if eachPath.find("idlelib"):
        usingIdle = 1
        break

if usingIdle:
  host="localhost"
  port="2000"
  msg="Hello world"
else:
  host, port, message = sys.argv[1], int(sys.argv[2]), sys.argv[3]
  
import sys, socket 
size = 1024 
print host



From http  Sun May  1 14:45:25 2005
From: http (Paul Rubin)
Date: 01 May 2005 11:45:25 -0700
Subject: How to kill a SocketServer?
References: <7xwtqj1lh1.fsf@ruckus.brouhaha.com>
	<mailman.83.1114972348.14961.python-list@python.org>
Message-ID: <7xpswa4wfu.fsf@ruckus.brouhaha.com>

Skip Montanaro <skip at pobox.com> writes:
> I use precisely that scheme with (I think *) no problem.  The only maybe
> significant difference I see is that I subclass ThreadingMixin so that it
> creates daemon threads: ...

According to the docs, you don't need the subclass, you can just set the
"daemon_threads" property on the server, e.g.

    class myserver(ThreadingMixIn, TCPServer): pass
    server = myserver(...)
    server.daemon_threads = True
    server.serve_forever()

You have to set the flag before you actually start the server, as above.

> (*) Maybe my XML-RPC server actually accepts one more connection after I set
> server.shutdown to True before it actually exits.  I'll have to take a look
> at that.

Yes, this is precisely what I'm asking.  How do you get the server to
go away without going out of your way to connect to it again?  Don't you
notice if it stays around?


From codecraig at gmail.com  Tue May  3 14:55:03 2005
From: codecraig at gmail.com (codecraig)
Date: 3 May 2005 11:55:03 -0700
Subject: Read / Write image file
In-Reply-To: <mailman.119.1115146065.6583.python-list@python.org>
References: <mailman.596.1115144845.6582.python-list@python.org>
	<mailman.119.1115146065.6583.python-list@python.org>
Message-ID: <1115146503.309071.110500@g14g2000cwa.googlegroups.com>

thanks Phil, the problem was that I was not using "rb" and "wb".

thanks.



From finite.automaton at gmail.com  Wed May  4 15:54:04 2005
From: finite.automaton at gmail.com (Lonnie Princehouse)
Date: 4 May 2005 12:54:04 -0700
Subject: Debugging C extensions on Gentoo
Message-ID: <1115236444.671233.79460@z14g2000cwz.googlegroups.com>

I've spent the last couple of hours trying to figure out how to set
breakpoints in Python C extensions under gdb 6.2 using Gentoo Linux,
and finally figured it out.   So for posterity (aka Google), here's the
trick:

  If GDB is giving you the message "Unable to find dynamic linker
breakpoint function", it's because the ebuild for glibc strips the
dynamic linker which makes it impossible to set breakpoints in shared
libraries.  You need to patch the ebuild.  Do this:

1. Find the ebuild that emerge is going to use:

  $ emerge -p
  These are the packages that I would merge, in order:

  Calculating dependencies ...done!
  [ebuild   R   ] sys-libs/glibc-2.3.4.20041102-r1
                           ^^^^^^^^^^^^^^^^^^^^^^^
2. Edit the corresponding .ebuild file in /usr/portage/sys-libs/glibc

You need to add one line of code, described by this patch submitted by
Benno Schulenberg (thanks!) on linux.gentoo.user in a thread from
Februrary titled "Mysterious GDB Error"  (the line numbers will be
different for your different ebuild version)

--- /usr/portage/sys-libs/glibc/glibc-2.3.4.20050125-r1.ebuild
2005-02-19 21:48:06.000000000 +0100
+++ /usr/local/portage/sys-libs/glibc/glibc-2.3.4.20050125-r1.ebuild
2005-02-24 23:54:34.000000000 +0100
@@ -371,8 +371,10 @@
        fi

        # now, strip everything but the thread libs #46186
        mkdir -p ${T}/thread-backup
        mv ${D}$(alt_libdir)/lib{pthread,thread_db}*
${T}/thread-backup/
+       # Also, don't strip the dynamic linker:
+       mv ${D}/$(get_libdir)/ld-* ${T}/thread-backup
        if use !nptlonly && want_nptl ; then
                mkdir -p ${T}/thread-backup/tls

3. emerge glibc (or "have a beer while you watch compiler messages
scroll by for half an hour")



From sarapythonlist at yahoo.com  Mon May  2 03:45:53 2005
From: sarapythonlist at yahoo.com (Sara Khalatbari)
Date: Mon, 2 May 2005 00:45:53 -0700 (PDT)
Subject: What's this error then?
Message-ID: <20050502074553.4405.qmail@web61105.mail.yahoo.com>

You remember me asking about running a program in my
code...I got a problem here

I copied the msgfmt here :

[sara at angoor HEADER]$ ls
allsamples              
Backup                   
file-roller.HEAD.fa.po  
msgfmt.py    
header.py      


& my code is:
#! /usr/bin/env python

import os
from os import execl

os.execl ('/home/sara/PYTHON/HEADER/msgfmt.py',
'file-roller.HEAD.fa.po')


But when I run it, this Error raises:
[sara at angoor HEADER]$ python run.py
/usr/bin/env: python2.2: No such file or directory

Do you have any solutions?

__________________________________________________
Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around 
http://mail.yahoo.com 


From Wibble at Mailinator.com  Mon May 23 20:36:15 2005
From: Wibble at Mailinator.com (Wibble)
Date: Mon, 23 May 2005 20:36:15 -0400
Subject: What are OOP's Jargons and Complexities?
In-Reply-To: <3584469.Aerji1NdQr@yahoo.com>
References: <1116843761.619249.144790@g47g2000cwa.googlegroups.com>
	<bAske.14563$yx.14338@fe08.lga> <3584469.Aerji1NdQr@yahoo.com>
Message-ID: <3cWdnbtAM6aZ6g_fRVn-2w@rcn.net>

Java or even C is more strongly typed than lisp or tcl which
dont really have a concept of a typed variable.
Lisp only does runtime type checking unless you do wierd
unnatural things.

I suppose ADA or Eiffel might have stronger typing than
java, but I dont know those languages.

I guess strong is relative.

alex goldman wrote:
> John W. Kennedy wrote:
> 
> 
>>Strong
>>typing has been a feature of mainstream programming languages since the
>>late 1950's.
> 
> 
> I'm just curious, what do you mean by /strong/ typing, and which strongly
> typed languages do you know?


From vegeta.z at gmail.com  Sun May  1 19:23:16 2005
From: vegeta.z at gmail.com (vegetax)
Date: Sun, 01 May 2005 19:23:16 -0400
Subject: are properties thread safe in this context?
Message-ID: <d53o1f$6pd$1@sea.gmane.org>


Class Req:
    def __init__(s,headers):
        s.headers = headers

    referer =\ 
    property(lambda s:s.headers['Connection'],
             lambda s,v:s.headers.__setitem__('referer',v))

each thread has its own instance of class Req, Req instances are not shared
between threads




From peter at engcorp.com  Wed May 11 19:36:12 2005
From: peter at engcorp.com (Peter Hansen)
Date: Wed, 11 May 2005 19:36:12 -0400
Subject: Python Documentation (should be better?)
In-Reply-To: <mailman.402.1115845179.29826.python-list@python.org>
References: <d5tjng$kae$1@sea.gmane.org>	<mailman.390.1115838298.29826.python-list@python.org>	<d5to4d$895$1@solaris.cc.vt.edu>
	<mailman.402.1115845179.29826.python-list@python.org>
Message-ID: <8-mdnVXdxeXdCh_fRVn-gA@powergate.ca>

Christopher J. Bottaro wrote:
 > Why can't Python have documentation like that?  The language is
> awesome, it just needs documentation of the same quality.

The canonical answer is, roughly, 'it can'.

A standard addendum is to say that contributions are always welcome.

A common clarification of that is to point out that in open source 
projects, somebody has to volunteer to do the work, or somebody has to 
be willing to pay for it to be done.  Which are you?

Personally, I have little problem with Python's docs, so I'm certainly 
going to focus my negligible free time elsewhere.  (Like rambling on and 
on answering newsgroup postings. :-)  If you felt strongly enough about 
the negative aspects of Python's docs, you would be looking for places 
where you could make a contribution.  (Lack of experience is not only 
not an excuse, but is probably an excellent qualification for the job!)

-Peter


From elbertlev at hotmail.com  Fri May 27 21:31:48 2005
From: elbertlev at hotmail.com (elbertlev at hotmail.com)
Date: 27 May 2005 18:31:48 -0700
Subject: Parsing a Python dictionary inside a Python extension
In-Reply-To: <mailman.203.1117229197.18027.python-list@python.org>
References: <mailman.203.1117229197.18027.python-list@python.org>
Message-ID: <1117243908.108262.315390@g14g2000cwa.googlegroups.com>

1. Why not to simplfy the problem. You can extract values from the
dictionari in python (this is fast). Put them in a list (fast). Pass
the list to the extension, handle it and return to python. etc.

2. Use Pyrex.



From miki at spam_me.net  Fri May 20 06:10:43 2005
From: miki at spam_me.net (michelle)
Date: Fri, 20 May 2005 03:10:43 -0700
Subject: Cascading menus with Tk
Message-ID: <uaGdnWyAsaM1KhDfRVn-sw@comcast.com>

Hi all,

I am new to Tk, or Python GUI programming and I seem to be stuck.  I
have looked about for help with Tk GUIs, but everything seems so terse
or incomplete?? I have been mostly using the "Introduction to Tkinter"
by Fredrik Lundh
(http://www.pythonware.com/library/tkinter/introduction/index.htm)

What I am trying to do is add cascading menus to a Tk menu widget like:

File
New...
---> Router
---> Firewall
Open
----
Exit

This seems simple enough, but I can't get it to work...the two
"add_cascade" methods (shown below), if used, run an endless loop that
is difficult to break:

mainWindow = Tk()
mainWindow.title("myApp")

# create a menu
menubar = Menu(mainWindow)
mainWindow.config(menu=menubar)

filemenu = Menu(menubar)
menubar.add_cascade(label="File", menu=filemenu)
filemenu.add_command(label="New...")
filemenu.add_cascade(label="Router")
filemenu.add_cascade(label="Firewall")
filemenu.add_command(label="Open...", command = openFileDialog)
filemenu.add_separator()
filemenu.add_command(label="Exit", command = mainWindow.destroy)

helpmenu = Menu(menubar)
menubar.add_cascade(label="Help", menu=helpmenu)
helpmenu.add_command(label="Online Help")
helpmenu.add_command(label="Help on the web")
helpmenu.add_separator()
helpmenu.add_command(label="About...", command = openAboutBox)

Any ideas??

Miki


From rupole at hotmail.com  Mon May 16 04:05:02 2005
From: rupole at hotmail.com (Roger Upole)
Date: Mon, 16 May 2005 04:05:02 -0400
Subject: PythonWin + Tkinter = broken relation with WindowsXP !?!?!
References: <1116214591.343470.213660@o13g2000cwo.googlegroups.com>
Message-ID: <4288550b$1_2@spool9-west.superfeed.net>

What version of pywin32 are you running ?
You might want to try upgrading to build 204
if you haven't already.  There was a bug where
a toolbar registry key was written multiple times,
which eventually fills up the registry and slows
the machine down, along with some
strange window behaviour.

      Roger


"jean-marc" <jmdeschamps at cvm.qc.ca> wrote in message 
news:1116214591.343470.213660 at o13g2000cwo.googlegroups.com...
>I read that Tkinter and Python IDEs (PythonWin and Idle at least) makes
> for a bad mix in execution mode because they're fighting for the event
> loop, but this mode is usefull to use the debugger.
>
> But to the point of breaking something elsewhere than in memory ???
> (Shutting down and rebooting the computer doesn't resolve the
> problems... PythonWin becomes impossible to use if another window is
> open (pdf files, winAmp music, browser et al...)
>
> is this documented somewhere??? It's been happening quite a few times
> to me (real bummer!).
>
> NOTE: This situation seems to appear slowly...  Not like a works or
> doesn't work situation but rather that corruption is progressive. This
> is a complete mystery to me????
>
> Thanks in advance,
>
> JMD
> Python 2.3.5, WinXP Pro SP2
> I've started using Python Scripter, which seems less problematic (at
> this point)
> 




----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! >100,000 Newsgroups
---= East/West-Coast Server Farms - Total Privacy via Encryption =---


From mikael at isy.liu.se  Fri May 20 10:23:53 2005
From: mikael at isy.liu.se (Mikael Olofsson)
Date: Fri, 20 May 2005 16:23:53 +0200
Subject: a re problem
In-Reply-To: <1116597929.339491.54870@g49g2000cwa.googlegroups.com>
References: <1116597929.339491.54870@g49g2000cwa.googlegroups.com>
Message-ID: <428DF2F9.1010407@isy.liu.se>



cheng wrote:

>>>p.sub('','%s') % "a\nbc"
>>>      
>>>
>'a\nbc'
>
>is it anyone got some idea why it happen?
>

Make that

p.sub('','%s' % "a\nbc")


Regards
/Mikael Olofsson

Universitetslektor (Senior Lecturer [BrE], Associate Professor [AmE])
Link?pings universitet

-----------------------------------------------------------------------
E-Mail:  mikael at isy.liu.se
WWW:     http://www.dtr.isy.liu.se/en/staff/mikael
Phone:   +46 - (0)13 - 28 1343
Telefax: +46 - (0)13 - 28 1339
-----------------------------------------------------------------------
Link?pings kammark?r: www.kammarkoren.com   Vi s?ker tenorer och basar! 



From joewong at mango.cc  Tue May 10 04:01:58 2005
From: joewong at mango.cc (Joe Wong)
Date: Tue, 10 May 2005 16:01:58 +0800
Subject: extra a column from a 2-D array?
Message-ID: <04ab01c55536$8a24a720$7f00a8c0@scl01.siliconcreation.com>

Hello,

 Suppose I have a python array as follow:

    s=[ [1,3,5],
          [2,4,6],
          [9,8,7]]

what is the quickest way to extract the second colum from all rows? That is: [3,4,8] in this example.

Best regards,

- Joe
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From bruce+usenet at cenderis.demon.co.uk  Mon May  2 10:28:10 2005
From: bruce+usenet at cenderis.demon.co.uk (Bruce Stephens)
Date: Mon, 02 May 2005 15:28:10 +0100
Subject: BitKeeper for Python?
References: <IOade.1185051$Xk.343206@pd7tw3no>
	<slrnd7bsn8.pa3.nick@irishsea.home.craig-wood.com>
	<87ll6xaizm.fsf@cenderis.demon.co.uk>
	<du7zmvdu4iw.fsf@mozart.cc.tut.fi>
	<d55co1$cv0m$1@netnews.upenn.edu>
Message-ID: <87d5s9aeit.fsf@cenderis.demon.co.uk>

"John P. Speno" <speno at isc.upenn.edu> writes:

[...]

> Too many choices here. Is anyone planning a PySCMOff blog yet <wink>?
>
> Python, the language that makes reinventing the wheel a little too
> easy sometimes.

Why stick to Python?  There seem to be about a dozen newish SCM's
around at the moment, in at least C, C++, Haskell, Java, Python, Ruby,
Smalltalk (Squeak) (although I think that last one is only for the
Squeak environment).  Typical, you wait years for a decent replacement
for CVS, and then...


From lycka at carmen.se  Mon May 30 06:40:32 2005
From: lycka at carmen.se (Magnus Lycka)
Date: Mon, 30 May 2005 12:40:32 +0200
Subject: Determine if windows drive letter is hard drive or optical from
	python?
In-Reply-To: <p49h915n6ikpnsemd8s5s3gj76rvprvbv6@4ax.com>
References: <1117219586.001829.74220@g49g2000cwa.googlegroups.com>
	<p49h915n6ikpnsemd8s5s3gj76rvprvbv6@4ax.com>
Message-ID: <d7eqj0$c4b$1@wake.carmen.se>

Wolfgang Strobl wrote:
> ...     for drive in string.letters[len(string.letters)/2:]:

Or better...
......    for drive in string.ascii_uppercase:

string.letters differ with locale, but Windows drives are always
only A-Z (right?) and just iterating over upper case (or lower)
seems more clear than to iterate over half of the sum of both...


From gsakkis at rutgers.edu  Sat May 28 12:09:43 2005
From: gsakkis at rutgers.edu (George Sakkis)
Date: 28 May 2005 09:09:43 -0700
Subject: smart logging and the "inspect" module ...
References: <d79mhu$t1p$1@otis.netspace.net.au>
Message-ID: <1117296583.503706.111860@g47g2000cwa.googlegroups.com>

"Darran Edmundson" wrote:
> I was playing around with the inspect module the other day
> trying to write a quick and dirty "smart" logger.  By this I mean
> that writing a message to the global log would also yield some
> info about the calling scope.  If you look at my function "test"
> below, I'd ideally like log messages:
>
> foo.py:test, "message 1"
> foo.py:Foo.__init__, "message 2"
> foo.py:Foo.bar, "message 3"
>
> For the life of me I can't figure out how to get this info without
> resorting to ridiculous things like parsing the source code (available
> via inspect.stack.
>
> Any help would be much appreciated - my unit tests are failing
> on this at the moment ;-)
>
> Cheers,
> Darran.

Unfortunately introspection gives access to frame and code objects, but
not to the callable objects (functions, methods, builtins); I think the
reason is that code objects can be shared for different callables.
Also, even the function name and the line number are misleading if
there is an alias (e.g. baz = bar). By the way, here's an alternative
that doesn't use inspect.

import sys

class Log:
    def write(self,message):
        frame = sys._getframe(1)
        code = frame.f_code
        print "%s:%d:%s, %s" % (code.co_filename, frame.f_lineno,
                                code.co_name, message)


There's a logging module in the standard library btw; make sure you
check it out before going on and extending the quick and dirty logger.

Regards,
George



From ruach at chpc.utah.edu  Tue May 10 13:12:05 2005
From: ruach at chpc.utah.edu (Matthew Thorley)
Date: Tue, 10 May 2005 11:12:05 -0600
Subject: object oriented inheritance problem
In-Reply-To: <mailman.298.1115744623.29826.python-list@python.org>
References: <d5qo62$l2o$1@vegh.ks.cc.utah.edu>
	<mailman.298.1115744623.29826.python-list@python.org>
Message-ID: <d5qq13$lcn$1@vegh.ks.cc.utah.edu>

So is elementtree a module of modules? I didn't know you could do that.
I just assumed that from elementtree import ElementTree imported a class
from the module elementtree.

It works now. Thanks guys.

Fredrik Lundh wrote:
> Matthew Thorley wrote:
> 
> 
>>I am trying to inherit from ElementTree so I can add some methods. This
>>is the code I am trying to make work, and the following is the error I
>>am getting.
>>
>>from elementtree import ElementTree
>>class AcidTree(ElementTree):
>>    def write_string(self):
>>        ....
>>
>>File "/home/hope/var/proj/acid/server/mgacparse.py", line 22, in ?
>>    class AcidTree(ElementTree):
>>TypeError: Error when calling the metaclass bases
>>    module.__init__() takes at most 2 arguments (3 given)
>>
>>I have *no* idea what is going on here.
> 
> 
> note that you're trying to inherit from a module.  the error message could
> need some work...
> 
> something like
> 
>     from elementtree.ElementTree import ElementTree, tostring
> 
>     class AcidTree(ElementTree):
>         def write_string(self):
>             return tostring(self)
> 
> should work better.
> 
> </F>
> 
> 
> 


From Florian.Lindner at xgm.de  Fri May  6 11:56:10 2005
From: Florian.Lindner at xgm.de (Florian Lindner)
Date: Fri, 06 May 2005 17:56:10 +0200
Subject: Getting number of iteration
Message-ID: <d5g42o$jc5$00$1@news.t-online.com>

Hello,
when I'm iterating through a list with:

for x in list:

how can I get the number of the current iteration?

Thx,

Florian


From philippe at philippecmartin.com  Mon May 30 11:47:59 2005
From: philippe at philippecmartin.com (Philippe C. Martin)
Date: Mon, 30 May 2005 15:47:59 GMT
Subject: plotting with Python
References: <429aeac6$1@news.fhg.de>
Message-ID: <PAGme.196$JQ6.111@newssvr11.news.prodigy.com>

Look at wxPython

Regards,

Philippe



Rolf Wester wrote:

> Hi,
> 
> I have a Python console application that is intended to be used
> interactively and I have to add plotting capabilities (multiple XY plots
> and if possible 2D-surface plots). I'm loocking for a reasonably fast
> plotting library (not GPL'ed, needs not be for free) that can be used
> under Windows. An alternative would also be a standalone application
> that can be controlled via TCP/IP from my Python application. I tried
> matplotlib but this is not fast enough (especially under Windows). I
> considered PyQwt but this is GPL'ed. So I would be very appreciative for
> any help.
> 
> With kind regards
> 
> Rolf Wester



From sjmaster at gmail.com  Sun May 22 02:57:19 2005
From: sjmaster at gmail.com (Steve M)
Date: 21 May 2005 23:57:19 -0700
Subject: ZODB memory problems (was: processing a Very Large file)
References: <118u4igq47fl9e0@corp.supernews.com>
Message-ID: <1116745039.551234.6020@g14g2000cwa.googlegroups.com>

 class ExtendedTupleTable(Persistent):
    def __init__(self):
        self.interning = ObjectInterning()

        # This Set stores all generated ExtendedTuple objects.
        self.ets = Set() # et(s): ExtendedTuple object(s)
        # This dictionary stores a mapping of elements to Sets of
        # ExtendedTuples.
        # eg: self.el2ets[3] = Set([(1,2,3), (3,4,5), (1,3,9)])
        #     self.el2ets[4] = Set([(3,4,5), (2,4,9)])
        self.el2ets = {}  # el: element of an ExtendedTuple object

#######

Note: I might be wrong. I say this here instead of qualifying every
assertion below. Thank you.

If you want more fine-grained swapping-out to disk, you might want to
look at the classes provided by the BTrees modules that come with ZODB.
Built-in container classes like set and dictionary are effectively
opaque to ZODB - they have to be loaded into memory or out to disk as
one whole unit, container and contents. This is true for the Persistent
versions of the containers as well - these are special mostly because
they automatically detect when they are modified.

In order to have some contents of a container pickled out to disk and
others available in memory, you should use BTrees:

>>> root = get_zodb_root_container()
>>> from BTrees import IOBTree
>>> root['el2ets'] = el2ets = IOBTree.IOBTree()
>>> transaction.commit()
>>> el2ets[3] = Set([(1,2,3), (3,4,5), (1,3,9)])
>>> transaction.commit()

IOBTree means that its designed to have integer keys and arbitrary
object values. OOBTree means you can use arbitrary objects (e.g.
tuples) as keys. I read that you should avoid using instances of
subclasses of Persistent as keys in BTrees unless you are very careful
implementing __cmp__(); instead confine your keys to objects
constructed from immutable python types, e.g., strings, tuples, tuples
of strings, ...

If you break down the persistent chunks into small enough pieces and
use the transaction commit and abort appropriately (that takes some
experimenting - e.g., on a read-only loop through every element of a
large BTree, I was running out of memory until I called
transaction.abort() every loop), you should max out your memory usage
at some reasonable amount (determined by cache size) no matter how big
your BTree grows.



From merman at o2online.de  Sat May 28 13:16:28 2005
From: merman at o2online.de (TK)
Date: Sat, 28 May 2005 19:16:28 +0200
Subject: __call__
In-Reply-To: <1117293143.679768.286600@g43g2000cwa.googlegroups.com>
References: <42987f9a$0$26432$9b622d9e@news.freenet.de>
	<1117293143.679768.286600@g43g2000cwa.googlegroups.com>
Message-ID: <4298a7ad$0$156$9b622d9e@news.freenet.de>

>>>>class Test(object):
> 
> ...     def __call__(self):
> ...         print "the instance was called"
> ...
> 
>>>>t = Test()
>>>>t()
> 
> the instance was called
> 
> Is this what you wanted?

Yeah! Thanks.


From a.r.ferreira at gmail.com  Fri May 20 10:47:42 2005
From: a.r.ferreira at gmail.com (Adriano Ferreira)
Date: Fri, 20 May 2005 11:47:42 -0300
Subject: How come print cannot be assigned to a variable?
In-Reply-To: <1116600042.622872.49850@g14g2000cwa.googlegroups.com>
References: <1116600042.622872.49850@g14g2000cwa.googlegroups.com>
Message-ID: <73ddeb6c05052007476c5ce81a@mail.gmail.com>

print is a statement, not a function.

Read Guido's words on that:
http://www.python.org/search/hypermail/python-1992/0112.html

Regards.
Adriano.


From could.net at gmail.com  Wed May  4 22:07:26 2005
From: could.net at gmail.com (could ildg)
Date: Thu, 5 May 2005 10:07:26 +0800
Subject: How to write this regular expression?
In-Reply-To: <pan.2005.05.05.01.40.14.92096@jerf.org>
References: <mailman.139.1115189526.6583.python-list@python.org>
	<maednQfrx_iwL-XfRVn-hA@powergate.ca>
	<mailman.159.1115209494.6583.python-list@python.org>
	<pan.2005.05.04.18.44.37.48366@jerf.org>
	<mailman.31.1115256623.29826.python-list@python.org>
	<pan.2005.05.05.01.40.14.92096@jerf.org>
Message-ID: <311b5ce1050504190715b66341@mail.gmail.com>

Sorry to Jeremy, I send my email derectly to your mailbox just now.

Group is very useful.
On 5/5/05, Jeremy Bowers <jerf at jerf.org> wrote:
> On Thu, 05 May 2005 09:30:21 +0800, could ildg wrote:
> > Jeremy Bowers wrote:
> >> Python 2.3.5 (#1, Mar  3 2005, 17:32:12) [GCC 3.4.3  (Gentoo Linux
> >> 3.4.3, ssp-3.4.3-0, pie-8.7.6.6)] on linux2 Type "help", "copyright",
> >> "credits" or "license" for more information.
> >> >>> import re
> >> >>> m = re.compile("\d+")
> >> >>> m.findall("344mmm555m1111")
> >> ['344', '555', '1111']
> >>
> >> (I just tried to capture the three numbers by adding a parenthesesset
> >> around the \d+ but it only gives me the first. I've never tried that
> >> before; is there a way to get it to give me all of them? I don't think
> >> so, so two REs may be required after all.)
> 
> > You can capture each number by using group, each group can have a name.
> 
> I think you missed out on what I meant:
> 
> Python 2.3.5 (#1, Mar  3 2005, 17:32:12)
> [GCC 3.4.3  (Gentoo Linux 3.4.3, ssp-3.4.3-0, pie-8.7.6.6)] on linux2
> Type "help", "copyright", "credits" or "license" for more information.
> >>> import re
> >>> m = re.compile(r"((?P<name>\d+)_){1,3}")
> >>> match = m.match("12_34_56_")
> >>> match.groups("name")
> ('56_', '56')
> >>>
> 
> Can you also get 12 & 34 out of it? (Interesting, as the non-named groups

Yes, you can extract **anything** you want if you like, to get each number
is easy, the only thing you need to do is to give a name to the number.

import re
str=r"_2_544_44000000"
r=re.compile(r'^(?P<slice1>_(?P<number1>[1-3]?\d))'
'(?P<slice2>_(?P<number2>(3[2-9])|([4-9]\d)|(\d{3,})))?'
'(?P<slice3>_(?P<number3>(3[2-9])|([4-9]\d)|(\d{3,})))?$',re.VERBOSE)
mo=r.match(str)
if mo:
   print mo.groupdict()
else:
   print "doesn't matche"

The code above will get the following rusult:
{'slice1': '_2', 'slice2': '_544', 'slice3': '_44000000', 'number2':
'544', 'number3': '44000000', 'number1': '2'}

> give you the *first* match....)
> 
> I guess I've never wanted this because I usually end up using "findall"
> instead, but I could still see this being useful... parsing a function
> call, for instance, and getting a tuple of the arguments instead of all of
> them at once to be broken up later could be useful.
> --
> http://mail.python.org/mailman/listinfo/python-list
>


From grante at visi.com  Tue May  3 10:41:36 2005
From: grante at visi.com (Grant Edwards)
Date: Tue, 03 May 2005 14:41:36 -0000
Subject: automated response
References: <mailman.72.1115090562.6583.python-list@python.org>
Message-ID: <117f3d0ot5pm4d4@corp.supernews.com>

On 2005-05-02, ashleyd <ashleyd at mail1.knighttrans.com> wrote:
> I will be out of the office starting Wednesday 04/13 and will
> return Tuesday 04/26. If you need anything, please contact
> Scott Carver at 662-890-0901 ext 5512. He can direct you to
> the right person.

Let's everybody call Scott with our Python questions!

-- 
Grant Edwards                   grante             Yow!  Were these parsnips
                                  at               CORRECTLY MARINATED in
                               visi.com            TACO SAUCE?


From rkern at ucsd.edu  Sat May 28 19:29:33 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Sat, 28 May 2005 16:29:33 -0700
Subject: scipy for python 2.4
In-Reply-To: <kx5me.3504$4N2.1634@newssvr30.news.prodigy.com>
References: <1117314382.677584.133160@o13g2000cwo.googlegroups.com>	<mailman.223.1117315996.18027.python-list@python.org>
	<kx5me.3504$4N2.1634@newssvr30.news.prodigy.com>
Message-ID: <d7auof$lt3$2@sea.gmane.org>

Philippe C. Martin wrote:
> In order to help, I just tried to compile it, and it seems to have a bunch
> of dependencies to worry about: 

Yes, that's true. Only some kind of LAPACK/BLAS (with ATLAS for 
preference) is actually necessary. Coincidentally, there are binaries 
provided if you can't find binary RPMs for your system.

http://www.scipy.org/download/atlasbinaries/linux/

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From trentm at ActiveState.com  Thu May 26 15:37:11 2005
From: trentm at ActiveState.com (Trent Mick)
Date: Thu, 26 May 2005 12:37:11 -0700
Subject: os independent way of seeing if an executable is on the path?
In-Reply-To: <429564a4@usenet01.boi.hp.com>
References: <7e-dnaQeau8AnQvfRVn-1w@comcast.com> <429564a4@usenet01.boi.hp.com>
Message-ID: <20050526193711.GA13940@ActiveState.com>

> > In Windows, I can read the error file, and get something like:
> > "'<program name>' is not recognized as an internal or external
> > command,\noperable program or batch file.\n"
> > and I'm sure I could parse this, but this seems fragile, and clearly os
> > dependent.

http://starship.python.net/crew/tmick/#which

I have a 'which' implementation that looks up a command-line program
name in the same way that Windows' process launching does at the shell
(when on Windows) and in the same way the usual 'which' executable does
on Un*x (when on Un*x).

Trent

-- 
Trent Mick
TrentM at ActiveState.com


From anthra.norell at tiscalinet.ch  Tue May 10 16:56:24 2005
From: anthra.norell at tiscalinet.ch (Anthra Norell)
Date: Tue, 10 May 2005 22:56:24 +0200
Subject: Encryption with Python?
References: <1115324411.952821.150780@o13g2000cwo.googlegroups.com><001301c552db$dd19d3e0$0201a8c0@mcuf7>
	<d5i0as$ejd$1@sea.gmane.org><009901c552fb$220132e0$0201a8c0@mcuf7>
	<d5ier2$hqa$1@sea.gmane.org><mailman.213.1115652248.29826.python-list@python.org><7x8y2oyyhf.fsf@ruckus.brouhaha.com><mailman.234.1115676887.29826.python-list@python.org>
	<7xvf5sqa3j.fsf@ruckus.brouhaha.com>
Message-ID: <004801c555a2$ba4564a0$0201a8c0@mcuf7>

---- Original Message -----
From: "Paul Rubin" <"http://phr.cx"@NOSPAM.invalid>
Newsgroups: comp.lang.python
To: <python-list at python.org>
Sent: Tuesday, May 10, 2005 12:59 AM
Subject: Re: Encryption with Python?

> ......
> Since good encryption schemes that don't have significant performance
> penalties are widely available, why mess with a crap scheme EVER?  Why
> use a solution that "might or might not be adequate" when you can use
> one that's definitely ok?
> ......

Why indeed?---Why run a marathon? Why have kids? Why shave? Why play chess?
Why sprinkle the lawn? Or as my friend Sergio's favorite line went: Why you
jerks cook your own muck when there are so many good restaurants in town?

His was definitely the best when it went out of business.

Regards

Frederic

> --
> http://mail.python.org/mailman/listinfo/python-list





From fredrik at pythonware.com  Sun May 22 13:22:00 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Sun, 22 May 2005 19:22:00 +0200
Subject: Parsing XML - Newbie help
References: <1116701614.858127.105550@g47g2000cwa.googlegroups.com>
Message-ID: <d6qf17$dbn$1@sea.gmane.org>

"rh0dium" wrote:

> I am relatively new to python and certainly new to XML parsing.  Can
> some show me how to get the product text out of this?

didn't you ask the same question a few days ago?  did you read the
replies to that post?

assuming that your sample is correct, you need to process the almost-
but-not-quite-XML file before passing it to an XML processor.  here's an
ElementTree-based example that does that:

    # see http://effbot.org/zone/element-index.htm
    from elementtree import ElementTree as ET

    data = open(...).read() # or os.popen(...).read()

    # strip off bogus XML declaration
    import re
    m = re.match("<\?xml[^>]+>", data)
    if m:
        data = data[m.end():]

    # wrap notes in container element
    data = "<doc>" + data + "</doc>"

    tree = ET.XML(data)

    processors = []
    for elem in tree.findall(".//node"):
        if elem.get("class") == "processor":
        processors.append(elem.findtext("product"))
    print len(processors)
    print processors

given your example, this prints:

    2
    ['AMD Opteron(tm) Processor 250', 'AMD Opteron(tm) Processor 250']

</F>





From SSchukat at dspace.de  Wed May 18 12:43:33 2005
From: SSchukat at dspace.de (Stefan Schukat)
Date: Wed, 18 May 2005 17:43:33 +0100
Subject: What are com_record objects
Message-ID: <B4EFCCAD2646F6449166007B3EAA5EC31DA0F0@exchange2003.dspace.de>

Use the Record Method from win32com.client

object = win32com.client.Dispatch("Server.Object")
IPAddress = win32com.client.Record("IPADDRESS_STRUCT", object)
IPAddress.b1 = 192
IPAddress.b2 = 168
IPAddress.b3 = 0
IPAddress.b4 = 1
object.connect(IPAddress)

	Stefan



> -----Original Message-----
> From: python-list-bounces+sschukat=dspace.de at python.org
> [mailto:python-list-bounces+sschukat=dspace.de at python.org]On Behalf Of
> Gijs Korremans
> Sent: Wednesday, May 18, 2005 3:48 PM
> To: python-list at python.org
> Subject: What are com_record objects
> 
> 
> Hi,
> 
> I want to connect to a com object with win32.client.
> Through this com object a have to connect to an other device 
> with object.Connect(struct IPADDRESS_STRUCT * ip)
> 
> the struct IPADDRESS_STRUCT looks like this:
> 
> Byte Offset	Name	Type	Length (Bytes) 	Description
> 0	b1	BYTE	1		Byte 1 of an internet address
> 1	b2	BYTE	1		Byte 2 of an internet address
> 2	b3	BYTE	1		Byte 3 of an internet address
> 3	b4	BYTE	1		Byte 4 of an internet address
> 
> Because Python doesn't have structs like C, I tried to do it 
> with a class (C structs are classes with no private) and with 
> pack but I always get the error message "Only com_record 
> objects can be used as records"
> 
> I'm new in the python language but I couldn't find anything 
> about structs or com_records in python on the internet.
> 
> Does anyone know how to do this? 
> 
> Kind regards, 
> 
> 
> Gijs
> 
> --
> This message has been scanned for viruses and
> dangerous content by Network Sentry, and is
> believed to be clean.
> http://www.networksentry.co.za
> 
> -- 
> http://mail.python.org/mailman/listinfo/python-list
> 


From mwm at mired.org  Mon May 16 03:41:25 2005
From: mwm at mired.org (Mike Meyer)
Date: Mon, 16 May 2005 02:41:25 -0500
Subject: Calling C/C++ not contained inside a .dll
References: <1116175386.522670.255090@o13g2000cwo.googlegroups.com>
Message-ID: <86ll6fd3dm.fsf@guru.mired.org>

delrocco at gmail.com writes:

> My question is..
> How do I get python scripts to call functions in my game code without
> having to build a .dll that has the entire meat of my game inside of
> it?  Ultimately I want to be able to load scripts from my game and
> have those scripts call functions in my game code.

This is a pretty generic question for any application: how do I invoke
my applications functionality from a python script.

You want to embed python in your game, and then extend the embedded
python interpter. This is covered in the chapter with pretty much that
as the title: <url:
http://docs.python.org/ext/extending-with-embedding.html >.

         <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From anthra.norell at tiscalinet.ch  Tue May  3 06:55:53 2005
From: anthra.norell at tiscalinet.ch (Anthra Norell)
Date: Tue, 3 May 2005 12:55:53 +0200
Subject: Setting the corner color in rotated PIL images
References: <Xns96494A613BC4Fjreeder@63.223.7.253>
Message-ID: <057d01c54fce$ad7c7800$0201a8c0@mcuf7>

I just had the same problem the other day. I solved it by starting out with
an image large enough to retain enough white area following the rotation.

Frederic

----- Original Message -----
From: "rzed" <jello at comics.com>
Newsgroups: comp.lang.python
To: <python-list at python.org>
Sent: Sunday, May 01, 2005 1:17 PM
Subject: Setting the corner color in rotated PIL images


> I'm using PIL to generate some images which may be rotated at the
> user's option. When they are rotated, the original image is cropped
> in the new image (which is fine), and the corners are black (which
> is not, in this case). I can't find any documented way to change
> the default fill color (if that's what it is) for the corners, and
> PIL also doesn't seem to support a flood fill. I have created a
> flood fill in Python, which works but which markedly slows image
> generation.
>
> Can anyone suggest a better way to set the color of the corners?
>
> All I really need in this case is that they be a solid color, the
> same color they were before being rotated.
>
> --
> rzed
> --
> http://mail.python.org/mailman/listinfo/python-list



From poisondart985 at gmail.com  Sun May 29 14:52:59 2005
From: poisondart985 at gmail.com (poisondart)
Date: 29 May 2005 11:52:59 -0700
Subject: Software licenses and releasing Python programs for review
References: <1117245014.218831.317750@g14g2000cwa.googlegroups.com>
	<mailman.216.1117291885.18027.python-list@python.org>
	<1117324124.350474.136600@g14g2000cwa.googlegroups.com>
	<pan.2005.05.29.12.23.39.107067@REMOVETHIScyber.com.au>
Message-ID: <1117392779.263376.236200@o13g2000cwo.googlegroups.com>

With the exception of the example with neighbour Bobby (which directly
utilizes my code for profit, in which case is a definite no), I don't
see why your other examples should make me reconsider releasing my
software for free--in all the cases you've described, the answer should
be no.

You publish a magazine and include a CD with my code--you are using my
code to attract readers (this, I did not agree to).

The example with colleague Betty does not say whether she has debugged
my code and sold it for profit. If she does, then she will have done
something very selfish in my view--also undesirable. If she hasn't
debugged my code...what is she doing selling my property?

The competitor Barney--This is exactly what I _don't_ want. What's he
doing selling my code?

Business partner Billy is using a scheme similar to the magazine
publisher example.

I plan to release my programs for academic and pedagogical purposes.
The knowledge contained in these programs is the same knowledge that
people use to speak a language--did you buy a copy of the English
language when you decided to learn it?

This is why I feel that it would not make sense for me to sell my
programs for profit.

Thanks,



From tzot at sil-tec.gr  Mon May 16 13:20:55 2005
From: tzot at sil-tec.gr (Christos TZOTZIOY Georgiou)
Date: Mon, 16 May 2005 20:20:55 +0300
Subject: python-dev Summary for 2005-04-16 through 2005-04-30
References: <mailman.13.1116201983.8733.python-list@python.org>
Message-ID: <9jlh811t7cadoua7eomglg3vca75rimrag@4ax.com>

On Mon, 16 May 2005 12:06:18 +1200, rumours say that "Tony Meyer"
<tony.meyer at gmail.com> might have written:

>A request for anonymous blocks by Shannon -jj Behrens launched a
>massive discussion about a variety of related ideas. This discussion
>is split into different sections for the sake of readability, but
>as the sections are extracted from basically the same discussion,
>it may be easiest to read them in the following order:
>
>1. `Localized Namespaces`_
>
>2. `The Control Flow Management Problem`_
>
>3. `Block Decorators`_
>
>4. `PEP 310 Updates Requested`_
>
>5. `Sharing Namespaces`_
>
>6. `PEP 340 Proposed`_
>
>[SJB]

Great job, Steve...
-- 
TZOTZIOY, I speak England very best.
"Be strict when sending and tolerant when receiving." (from RFC1958)
I really should keep that in mind when talking with people, actually...


From modelnine at ceosg.de  Sat May 21 04:45:32 2005
From: modelnine at ceosg.de (Heiko Wundram)
Date: Sat, 21 May 2005 10:45:32 +0200
Subject: count files in a directory
In-Reply-To: <200505202125.03838.jstroud@mbi.ucla.edu>
References: <d6m5e1$cr7$1@solaris.cc.vt.edu> <d6m8nc$i4v$2@solaris.cc.vt.edu>
	<200505202125.03838.jstroud@mbi.ucla.edu>
Message-ID: <200505211045.35940.modelnine@ceosg.de>

Am Samstag, 21. Mai 2005 06:25 schrieb James Stroud:
> This will work for your purposes (and seems pretty fast compared to the
> alternative):
>
> file_count = len(os.walk(valid_path).next()[2])

But will only work when you're just scanning a single directory with no 
subdirectories...!

The alternative (which will work regardless of subdirectories) is something 
like the following:

heiko at heiko ~ $ python
Python 2.4 (#1, Apr  3 2005, 00:49:51)
[GCC 3.4.3-20050110 (Gentoo Linux 3.4.3.20050110-r1, ssp-3.4.3.20050110-0, 
pie- on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import os
>>> path = "/home/heiko"
>>> file_count = sum((len(f) for _, _, f in os.walk(path)))
>>> file_count
55579
>>>

HTH!

-- 
--- Heiko.
  see you at: http://www.stud.mh-hannover.de/~hwundram/wordpress/
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From seefeld at sympatico.ca  Sat May 21 23:28:20 2005
From: seefeld at sympatico.ca (Stefan Seefeld)
Date: Sat, 21 May 2005 23:28:20 -0400
Subject: None module reference
Message-ID: <V%Sje.7552$Wp.922649@news20.bellglobal.com>

hello,

I'v run into a bug that I find hard to understand:

In a python module of mine I import system modules
('sys', say) and then use them from within some functions.

However, during program termination I'm calling
one such function and the module reference ('sys')
is 'None' !

What does that mean ? Have those modules already
been unloaded ? If so, why, given that my
current module still references them ?

Any help is highly appreciated,

		Stefan


From bokr at oz.net  Mon May  9 19:53:17 2005
From: bokr at oz.net (Bengt Richter)
Date: Mon, 09 May 2005 23:53:17 GMT
Subject: replace string patern with different value
References: <1115645021.903836.262590@z14g2000cwz.googlegroups.com><797fe3d40505090632612801e8@mail.gmail.com>
	<797fe3d405050906321809bd80@mail.gmail.com>
	<mailman.209.1115647079.29826.python-list@python.org>
Message-ID: <427ff48c.1117947122@news.oz.net>

On Mon, 9 May 2005 15:48:14 +0200, "Fredrik Lundh" <fredrik at pythonware.com> wrote:

>Bill Mill wrote:
>
>>>>> for rep in L:
>> ...     source = source.replace(token, rep, 1)
>
>here's another way to do it:
>
>>>> L = ["11", "22", "33"]
>>>> S = "xyzzy text we've got xyzzy text xyzzy yeah yeah yeah"
>>>> L.reverse()
>>>> re.sub("xyzzy", lambda x: L.pop(), S)
>"11 text we've got 22 text 33 yeah yeah yeah"
>
>or, less destructive:
>
>>>> L = ["11", "22", "33"]
>>>> S = "xyzzy text we've got xyzzy text xyzzy yeah yeah yeah"
>>>> re.sub("xyzzy", lambda x, pop=iter(L).next: pop(), S)
>
>(a few more iterations of this idea and we're in python riddle country...)
>
Another:

 >>> L = ["11", "22", "33"]
 >>> S = "xyzzy text we've got xyzzy text xyzzy yeah yeah yeah"
 >>> ''.join([(i%2 and [n()] or [s()])[0] for s, n in
 ...             [(iter(S.split('xyzzy')).next, iter(L).next)] for i in xrange(2*len(L)+1)])
 "11 text we've got 22 text 33 yeah yeah yeah"

Or maybe:

 >>> ''.join(map(lambda x,y:(x or '')+(y or ''), S.split('xyzzy'), L))
 "11 text we've got 22 text 33 yeah yeah yeah"

Regards,
Bengt Richter


From http  Sat May 21 02:41:10 2005
From: http (Paul Rubin)
Date: 20 May 2005 23:41:10 -0700
Subject: first release of PyPy
References: <mailman.264.1116625088.8733.python-list@python.org>
	<1116629407.638782.145950@g47g2000cwa.googlegroups.com>
	<1116644536.741250.249860@g44g2000cwa.googlegroups.com>
	<mailman.279.1116649250.8733.python-list@python.org>
	<1116653460.808204.74460@g43g2000cwa.googlegroups.com>
	<87mzqpytep.fsf@wilson.rwth-aachen.de>
Message-ID: <7xfywhxerd.fsf@ruckus.brouhaha.com>

Torsten Bronger <bronger at physik.rwth-aachen.de> writes:
> Please could somebody explain to us non-CS people why PyPy could
> have speed features CPython can't have?

Does the one-word answer "compiler" explain enough?


From http  Wed May 11 22:52:23 2005
From: http (Paul Rubin)
Date: 11 May 2005 19:52:23 -0700
Subject: Python Documentation (should be better?)
References: <mailman.389.1115837608.29826.python-list@python.org>
	<1115839271.271071.32710@z14g2000cwz.googlegroups.com>
Message-ID: <7xoebhb1g8.fsf@ruckus.brouhaha.com>

hugonz at gmail.com writes:
> I think Python's doc really rock. It's odd, why do you refer to the
> tutorial when the lib API is what I'd consider "the docs".

Some parts of the lib doc are better than others.  The only way to
understand SocketServer, for example, is to read the long comment at
the beginning of the source file.  I've been wanting to get around to
merging that with the doc writeup and adding some examples.

Tkinter, as well, is practically undocumented as far as the base distro
is concerned, but there's some good docs for it elsewhere on the web.


From fredrik at pythonware.com  Thu May 19 03:54:15 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 19 May 2005 09:54:15 +0200
Subject: Is Python suitable for a huge, enterprise size app?
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com><1116432325.497438.64580@g49g2000cwa.googlegroups.com><1116433218.495131.71260@g49g2000cwa.googlegroups.com>
	<1116440427.255902.36260@g49g2000cwa.googlegroups.com>
Message-ID: <d6hglk$543$1@sea.gmane.org>

"Steve M" <sjmaster at gmail.com> wrote

> http://mail.python.org/pipermail/python-dev/2005-January/051255.html
>
> discusses the problem with memory allocation in CPython. Apparently
> CPython is not good at, or incapable of, releasing memory back to the
> operating system.

and unless your operating system is totally braindead, and thus completely unfit
to run huge enterprise size applications, that doesn't really matter much.  leaks
are problematic, large peak memory use isn't.

(fwiw, I'm tempted to argue that people who don't understand how memory
allocation works on modern systems are unfit to run enterprise applications as
well, but that's another story).

btw, very few memory allocators "release memory back to the operating system"
for small allocations; most memory allocators, including Pythons, do that for large
allocations.  try running this, and check the memory use after each step:

>>> x = 10000000 * "x"
>>> y = x[1:]
>>> z = x[2:]
>>> del z
>>> del y
>>> del z

still claiming that CPython's incapable of releasing memory back to the system?

(finding the smallest multiplier that gives the same effect is left as an exercise etc.)

</F> 





From steven.bethard at gmail.com  Mon May 16 17:33:22 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Mon, 16 May 2005 15:33:22 -0600
Subject: Applying a function to a 2-D numarray
In-Reply-To: <8mrh81h0naagpe716i8apjnpj8ib0kg0nk@4ax.com>
References: <nb7h81hqrgbd2kofg48tlt8oaicv34iuh9@4ax.com>
	<I_Sdnfv3isSrThXfRVn-vQ@comcast.com>
	<7flh81d00feulgkdfdrh69rbgp4v36mqtl@4ax.com>
	<uIednQfZNpL1fRXfRVn-vQ@comcast.com>
	<8mrh81h0naagpe716i8apjnpj8ib0kg0nk@4ax.com>
Message-ID: <mcCdnW65Ya8CjBTfRVn-tA@comcast.com>

Matt Feinstein wrote:
> Well, for example, suppose I want to modify the elements of the matrix
> in some fashion. However, I'm not entirely sure how I want to do it.
> As a strawman, I generate a function with a Boolean test in it that
> multiplies by one factor if the matrix element is in an interval and
> by a different factor if it is outside the interval
> 
> def genfunc(xmin, xmax, f_in, f_out):
>      def booltest(x):
>          in_interval = x > xmin and x < xmax
>          if in_interval:
>               return x*f_in
>         else:
>              return x*f_out
>     return booltest

If efficiency was a concern, I'd probably write this instead as:

py> import numarray as na
py> def genfunc(xmin, xmax, f_in, f_out):
...     def booltest(arr):
...         is_in = na.logical_and(arr > xmin, arr < xmax)
...         is_out = na.logical_not(is_in)
...         return arr*is_in*f_in + arr*is_out*f_out
...     return booltest
...
py> b = genfunc(5, 11, 2, -2)
py> arr = na.arange(20, shape=(4,5))
py> b(arr)
array([[  0,  -2,  -4,  -6,  -8],
        [-10,  12,  14,  16,  18],
        [ 20, -22, -24, -26, -28],
        [-30, -32, -34, -36, -38]])

Sure, it's a little more complex that your version, and you have to 
understand that you're manipulating arrays, not elements of arrays, but 
if you want the efficiency of numarray or Numeric, something like this 
is probably the way to go.

> Generating the function in this way gives me great flexibility in
> deciding exactly what function I apply to the matrix. It's why I want
> to use Python for this analysis. The part of the function  I vary and
> play around with is localized in one place in the 'genfunc' function--
> I can change that and everything else stays the same. However, I
> realize that the gain in flexibility means a loss in efficiency. I'm
> limited to not-so-efficient ways of. For this work, it's OK-- I just
> want to know the best not-so-efficient way of doing the calculation.

If you're not worried about efficiency, your initial suggestion:

     def applyfun(m,f):
         elist = [f(e) for e in m]
         return reshape(elist,m.shape)

seems pretty reasonable.  OTOH, if you're using numarray or Numeric in 
the first place, you're obviously somewhat concerned about efficiency.

STeVe


From jjl at pobox.com  Sun May  1 09:35:04 2005
From: jjl at pobox.com (John J. Lee)
Date: 01 May 2005 13:35:04 +0000
Subject: Which IDE is recommended?
References: <426f90ac$1_2@rain.i-cable.com>
	<slrnd70bt5.d0e.davecook@localhost.localdomain>
	<mailman.39.1114802234.14961.python-list@python.org>
	<du7pswdtkxi.fsf@mozart.cc.tut.fi>
Message-ID: <8764y32ho7.fsf@pobox.com>

Ville Vainio <ville at spammers.com> writes:

> >>>>> "John" == John J Lee <jjl at pobox.com> writes:
> 
>     John> Dave Cook <davecook at nowhere.net> writes:
> 
>     John> What are those compelling features of Pydev, for an emacs
>     John> user?
> 
> http://pydev.sourceforge.net/features.html
> 
> Code completion and debugger are the most obvious ones. Eclipse itself
> is also quite a "feature".

What good features does the debugger have?  What other good features
does Eclipse have right now (that are useful for Python programming,
but not necessarily specific to that)?

Obviously Eclipse looks good in the future, but I wonder what it's
like right now.

I'm more interested in features than bugs, since I'm sure the
following experience isn't typical, but: I did try it not long ago,
and the commercial distribution I tried (I forget the name, but it had
added Python support) hung after a few minutes of use, and completion
didn't work.  It was also terribly slow (compared to emacs on the same
box), which worries me more than the bugs.


John


From nospam at here.com  Mon May 16 15:28:17 2005
From: nospam at here.com (Matt Feinstein)
Date: Mon, 16 May 2005 15:28:17 -0400
Subject: Applying a function to a 2-D numarray
References: <nb7h81hqrgbd2kofg48tlt8oaicv34iuh9@4ax.com>
	<I_Sdnfv3isSrThXfRVn-vQ@comcast.com>
	<7flh81d00feulgkdfdrh69rbgp4v36mqtl@4ax.com>
	<uIednQfZNpL1fRXfRVn-vQ@comcast.com>
Message-ID: <8mrh81h0naagpe716i8apjnpj8ib0kg0nk@4ax.com>

On Mon, 16 May 2005 12:03:24 -0600, Steven Bethard
<steven.bethard at gmail.com> wrote:

>Can you give an example of what you really want to do?  Probably there 
>are numarray functions that you can use.  In general, you'll do better 
>applying a sequence of numarray functions than operating element-wise on 
>an array and converting it from a list back to an array...

Well, for example, suppose I want to modify the elements of the matrix
in some fashion. However, I'm not entirely sure how I want to do it.
As a strawman, I generate a function with a Boolean test in it that
multiplies by one factor if the matrix element is in an interval and
by a different factor if it is outside the interval

def genfunc(xmin, xmax, f_in, f_out):
     def booltest(x):
         in_interval = x > xmin and x < xmax
         if in_interval:
              return x*f_in
        else:
             return x*f_out
    return booltest
           
Generating the function in this way gives me great flexibility in
deciding exactly what function I apply to the matrix. It's why I want
to use Python for this analysis. The part of the function  I vary and
play around with is localized in one place in the 'genfunc' function--
I can change that and everything else stays the same. However, I
realize that the gain in flexibility means a loss in efficiency. I'm
limited to not-so-efficient ways of. For this work, it's OK-- I just
want to know the best not-so-efficient way of doing the calculation.

Matt Feinstein

--
There is no virtue in believing something that can be proved to be true.


From maxm at mxm.dk  Tue May 10 04:01:09 2005
From: maxm at mxm.dk (Max M)
Date: Tue, 10 May 2005 10:01:09 +0200
Subject: Unique Elements in a List
In-Reply-To: <mailman.256.1115710148.29826.python-list@python.org>
References: <1115676903.432187.294910@z14g2000cwz.googlegroups.com>	<7xbr7jq3gb.fsf@ruckus.brouhaha.com>
	<mailman.256.1115710148.29826.python-list@python.org>
Message-ID: <42806991$0$274$edfadb0f@dread12.news.tele.dk>

Fredrik Lundh wrote:

> depending on the data, it might be more efficient to store the
> "last seen index" in a dictionary, and sort the result on the way
> out (if necessary).  something like


form sets import Set

data = list(Set([0.1,0.5,0.6,0.4,0.1,0.5,0.6,0.9]))


-- 

hilsen/regards Max M, Denmark

http://www.mxm.dk/
IT's Mad Science


From dalke at dalkescientific.com  Wed May  4 01:26:10 2005
From: dalke at dalkescientific.com (Andrew Dalke)
Date: Wed, 04 May 2005 05:26:10 GMT
Subject: control precision for str(obj) output?
References: <d598rq$8fj$1@joe.rice.edu> <864qdj90vd.fsf@guru.mired.org>
Message-ID: <pan.2005.05.04.05.26.11.56711@dalkescientific.com>

Mike Meyer wrote:
> Someone want to tell me the procedure for submitting FAQ entries, so I
> can do that for this?

You mean more than what already exists at
  http://www.python.org/doc/faq/general.html#why-are-floating-point-calculations-so-inaccurate

which has a link to an even more detailed chapter in the tutorial at
  http://docs.python.org/tut/node16.html

?

				Andrew
				dalke at dalkescientific.com



From littlejohn.75 at news.free.fr  Tue May  3 09:55:43 2005
From: littlejohn.75 at news.free.fr (F. Petitjean)
Date: 03 May 2005 13:55:43 GMT
Subject: sorting list and then return the index of the sorted item
References: <1115127433.984686.99060@f14g2000cwb.googlegroups.com>
Message-ID: <427782df$0$18796$636a15ce@news.free.fr>

Le 3 May 2005 06:37:14 -0700, custard_pie a ?crit :
> I need help sorting a list...I just can't figure out how to sort a list
> and then return a list with the index of the sorted items in the list
> for example if the list I want to sort is [2,3,1,4,5]
> I need [2,0,1,3,4] to be returned
> Can someone help please....
If you have Python version 2.4 (or 2.4.1):
lst = [2,3,1,4,5]
import operator
sorted(enumerate(lst), key=operator.itemgetter(1))
[(2, 1), (0, 2), (1, 3), (3, 4), (4, 5)]

But *why* do you want the indices ? Most of the time dealing with the
indices is the wrong way in Python (perhaps the right way in FORTRAN :-)


From nick at craig-wood.com  Mon May  2 05:30:05 2005
From: nick at craig-wood.com (Nick Craig-Wood)
Date: 02 May 2005 09:30:05 GMT
Subject: BitKeeper for Python?
References: <IOade.1185051$Xk.343206@pd7tw3no>
Message-ID: <slrnd7bsn8.pa3.nick@irishsea.home.craig-wood.com>

John Smith <not at home.com> wrote:
>  I am going to be working with some people on a project that is going to be
>  done over the internet. I am looking for a good method of keeping everyone's
>  code up to date and have everyone be able to access all the code including
>  all the changes and be able to determine what parts of the code were
>  changed.
> 
>  If it were opensource that would be even better.

You could try Mercurial

  http://www.selenic.com/mercurial/

which aims at being a true bk replacement.  Its also written in
python.  Its being developed at the moment...

-- 
Nick Craig-Wood <nick at craig-wood.com> -- http://www.craig-wood.com/nick


From swaroopch at gmail.com  Wed May  4 06:17:01 2005
From: swaroopch at gmail.com (Swaroop C H)
Date: Wed, 4 May 2005 15:47:01 +0530
Subject: file parsing/watching + qt
In-Reply-To: <1115185382.052344.115030@g14g2000cwa.googlegroups.com>
References: <1115185382.052344.115030@g14g2000cwa.googlegroups.com>
Message-ID: <351e887105050403175622c969@mail.gmail.com>

On 3 May 2005 22:43:02 -0700, aljosa <aljosa.mohorovic at gmail.com> wrote:
> i'm trying to fetch last line in file whenever isdnlog logs something
> so that i can parse that line for a number and store it somewhere else,
> is there a standard solution for this?
> i'm using python2.3 on linux with PyQt3.

Use the Python binding to FAM (File Alteration Monitor):
http://python-fam.sourceforge.net/


HTH,
-- 
Swaroop C H
Blog: http://www.swaroopch.info
Book: http://www.byteofpython.info


From rkern at ucsd.edu  Thu May 19 02:06:08 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Wed, 18 May 2005 23:06:08 -0700
Subject: MMS download
In-Reply-To: <d6h9e4$q95$1@news.kreonet.re.kr>
References: <d6h9e4$q95$1@news.kreonet.re.kr>
Message-ID: <d6haas$kh9$2@sea.gmane.org>

Chu, Jeong Ho wrote:
> Is it possible to download MMS stream by using python?

I don't know of a way with Python alone, but you could use mplayer's 
-dumpstream capabilities to dump to a file. It might even allow you to 
dump to a pipe, I forget.

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From skromta at gmail.com  Fri May 27 09:47:09 2005
From: skromta at gmail.com (Kalle Anka)
Date: Fri, 27 May 2005 13:47:09 +0000 (UTC)
Subject: Strings for a newbie
References: <d7726f$fdg$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
	<d7730r$qrb$1@n6.co.ru>
	<d77707$jo$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
Message-ID: <loom.20050527T154428-683@post.gmane.org>

Malcolm Wooden <mwooden <at> dtptypes.com> writes:

> Yes Sergei, as 3 of the lines are Dim statements, the real code is just 4 
> lines, a totally logical. It's not the amout of code thats a probelm, it's 
> following the logic and structure thats important. As I said Python.. UGH!

Since I both use RB and Python I can say the the "logic and structure" 
(if you by that means the semantics)  is more or less the exactly the 
same in RB and Python. The only major difference is that in RB you 
have to declare the type.



From h_stovold at hotmail.com  Mon May  2 21:01:04 2005
From: h_stovold at hotmail.com (Heather Stovold)
Date: Mon, 2 May 2005 20:01:04 -0500
Subject: So many things that need to be decided....
Message-ID: <G3Ade.1022$fF6.12717@news1.mts.net>

Wow - deciding to program in python sure requires a lot of decisions!

So far:

I've decided on python for the programming language.
I've decided on wxpython for the GUI....
I've decided on DrPython for the Editor....

I still need to decide on a database........   I've really only used Access,
and my SQL skills aren't that great.  It would also need to be free....
Any suggestions??

Am I going to need a program/package for a report writer?  or that might
depend on the database I use?

I've never had to make so many decisions to program in my life, because I've
generally only had a couple of options, or those options were decided by
other people.

I really appreciate the help this newsgroup has provided - both for my
previous post - and for the reading of other posts I've done.   I'm sure
I'll have a million more questions soon!

Thanks for the help!

Heather






From qwweeeit at yahoo.it  Wed May 11 14:25:58 2005
From: qwweeeit at yahoo.it (qwweeeit at yahoo.it)
Date: 11 May 2005 11:25:58 -0700
Subject: Importing modules
In-Reply-To: <mailman.380.1115830888.29826.python-list@python.org>
References: <1115816747.292060.292200@o13g2000cwo.googlegroups.com>
	<mailman.380.1115830888.29826.python-list@python.org>
Message-ID: <1115835958.080135.290900@o13g2000cwo.googlegroups.com>


Fredrik Lundh ha scritto:
> qwweeeit at yahoo.it wrote:
>
> > To understand a program, however, you need also a flow chart...
>
> so understand a carefully designed modular component structure, you
> have to remove the structure so you can create a flow chart?

Not everyone is a "guru" like you... I already implemented (some years
ago) flow chart tools but for structured languages, not Object Oriented
ones like Python.
So forgive me if I'm in trouble... Instead of mocking me, the better
should be to give me an brief idea of the import's roll (namespaces,
visibility and so on...) 

Bye.



From whocaresrmb at yahoo.com  Sat May 14 19:13:56 2005
From: whocaresrmb at yahoo.com (Johnny Gentile)
Date: 14 May 2005 16:13:56 -0700
Subject: space saving retitle of thread
In-Reply-To: <Etvhe.1353573$8l.349001@pd7tw1no>
References: <1116096706.696830.275140@g44g2000cwa.googlegroups.com>
	<Etvhe.1353573$8l.349001@pd7tw1no>
Message-ID: <1116112436.708034.81770@g44g2000cwa.googlegroups.com>

aahhhh.....



From cfbolz at gmx.de  Sat May 21 06:14:58 2005
From: cfbolz at gmx.de (Carl Friedrich Bolz)
Date: Sat, 21 May 2005 12:14:58 +0200
Subject: first release of PyPy
In-Reply-To: <du7hdgxt4th.fsf@amadeus.cc.tut.fi>
References: <mailman.264.1116625088.8733.python-list@python.org>	<1116629407.638782.145950@g47g2000cwa.googlegroups.com>	<1116644536.741250.249860@g44g2000cwa.googlegroups.com>	<mailman.279.1116649250.8733.python-list@python.org>	<1116653460.808204.74460@g43g2000cwa.googlegroups.com>	<87mzqpytep.fsf@wilson.rwth-aachen.de>	<7xfywhxerd.fsf@ruckus.brouhaha.com>	<87is1dyru8.fsf@wilson.rwth-aachen.de>
	<du7hdgxt4th.fsf@amadeus.cc.tut.fi>
Message-ID: <428F0A22.3090706@gmx.de>

Hi!

Ville Vainio wrote:
>>>>>>"Torsten" == Torsten Bronger <bronger at physik.rwth-aachen.de> writes:
> 
> 
>     Torsten> What's supposed to be compiled?  Only PyPy itself or also
>     Torsten> the programs it's "interpreting"?
> 
> PyPy is written in python, if it can be compiled then the programs can
> be as well.

That's correct in the sense that if a program adherses to the same 
staticness conditions as the PyPy code, it can be compiled. The core 
parts of the PyPy interpreter are written in "Restricted Python" 
(RPython), which imposes some limits to the features you are allowed to 
use. This is done in such a way that the annotator can perform type 
inference, e.g. you are not allowed to assign values with different 
types to a variable (plus some more restrictions). See

http://codespeak.net/pypy/index.cgi?doc/coding-guide.html#restricted-python

for more details about RPython.

> 
>     Torsten> I've been told by so many books and on-line material that
>     Torsten> Python cannot be compiled (unless you cheat).  So how is
>     Torsten> this possible?
> 
> These guys are exploring a new territory. OTOH, Lisp is a dynamic
> language like python and it can be compiled to native code. Pyrex
> demonstrates the "trivial" way to compile python to native code, the
> real problem is making the resulting code fast. Typically this
> requires type inference (i.e. figuring out the type of an object from
> the context because there are no type declarations) to avoid dict
> lookups in method dispatch.

There is some preliminary documentation about the type infering (which 
is called annotation here) and the translation process:

http://codespeak.net/pypy/index.cgi?doc/translation.html

Regards,

Carl Friedrich


From jdc at uwo.ca  Tue May  3 19:27:28 2005
From: jdc at uwo.ca (Dan Christensen)
Date: Tue, 03 May 2005 19:27:28 -0400
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <1f7befae05050313286dd4a254@mail.gmail.com>
References: <d4u60o$akh$1@news2.netvision.net.il>
	<mailman.47.1114818531.14961.python-list@python.org>
	<3dg5isF6qe1nhU1@news.dfncis.de> <d4v1an$j7q$1@sea.gmane.org>
	<1f7befae05043000165448b8d@mail.gmail.com>
	<mailman.55.1114846630.14961.python-list@python.org>
	<Pine.SOL.4.33.0505031353330.17143-100000@innovate>
	<1f7befae05050313286dd4a254@mail.gmail.com>
Message-ID: <874qdjc2lb.fsf@uwo.ca>

Tim Peters <tim.peters at gmail.com> writes:

> [Chris McAloney]
>> Okay, so I've been working on level seven for a LONG time now.
>
> Hmm.  I've been staring at that one 18 hours a day since last Friday,
> and still don't have the foggiest idea.  I've counted boxes, counted
> pixels, broken it apart and rearranged it like a jigsaw puzzle, ran
> "strings" over the .png, ..., all in vain.

*** small hint below ***









*** a bit further ***









Did you look at the RGB values of the pixels?

Dan


From rkern at ucsd.edu  Wed May 11 16:46:50 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Wed, 11 May 2005 13:46:50 -0700
Subject: pyvm -- faster python
In-Reply-To: <4281D853.9000600@ceid.upatras.gr>
References: <mailman.164.1115548611.29826.python-list@python.org><1115561483.741761.212140@f14g2000cwb.googlegroups.com><m102l2-9qr.ln1@home.rogerbinns.com>	<mailman.264.1115716603.29826.python-list@python.org>	<vu38l2-k5v.ln1@home.rogerbinns.com>
	<4281D853.9000600@ceid.upatras.gr>
Message-ID: <d5tqhh$e22$1@sea.gmane.org>

Stelios Xanthakis wrote:

> There are two kinds of C modules: those that do have a knowledge
> of the C API (like sre, tkinter, etc) and those that are just C/C++
> libraries which are simply wrapped as modules.  For the latter there
> are two solutions besides adding a wrapper which makes pyvm appear
> as libpython:
> 	- an advanced ctypes module which will make dlopening libraries
> 	and wrapping their symbols behind python functions, a matter of
> 	python code.  I'm considering this approach to provide things
> 	like 'raw_input'.
> 	- hacking SWIG.  Shouldn't be too hard and will instantly give
> 	us access to wx, qt, etc.

No, writing a pyvm modules for SWIG won't give you compatibility with 
most existing SWIG wrappers. Such wrappers are very, very rarely "pure 
SWIG". Almost all nontrivial wrappers include ad hoc typemaps that use 
the Python C API.

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From t-meyer at ihug.co.nz  Thu May 19 21:04:21 2005
From: t-meyer at ihug.co.nz (Tony Meyer)
Date: Fri, 20 May 2005 13:04:21 +1200
Subject: problem uploading ZIP file tp PyPI
In-Reply-To: <ECBA357DDED63B4995F5C1F5CBE5B1E802E59CB2@its-xchg4.massey.ac.nz>
Message-ID: <ECBA357DDED63B4995F5C1F5CBE5B1E801B0F739@its-xchg4.massey.ac.nz>

>> So (if the former is what you meant) would a workaround for 
>> now be to do something like:
>>
>>  setup.py sdist --format=gztar upload
> 
> (1) error: command 'tar' failed: No such file or directory

I was assuming that tar and gzip were available.  There are various tar/gzip
applications available for Windows, e.g. Cygwin, gnuwin32.

<http://cygwin.com>
<http://gnuwin32.sourceforge.net>
<http://www.gzip.org>

> (2) error: invalid command 'upload'

Using the files link alternative to 'upload', then (I thought that
specifying 'upload' in my example would make the question clearer, since it
spells out that I want to upload the dist, without saying that I will use
the files link).

=Tony.Meyer



From tlviewer at yahoo.com  Sun May 15 02:02:34 2005
From: tlviewer at yahoo.com (tlviewer)
Date: Sun, 15 May 2005 06:02:34 GMT
Subject: pygame on win32,  image.fromstring()
References: <bXdhe.215$h86.142@tornado.socal.rr.com>
	<AYhhe.379$X92.275@newsread2.news.pas.earthlink.net>
	<jIqhe.15003$887.8989@tornado.socal.rr.com>
Message-ID: <_BBhe.16006$ya2.12946@tornado.socal.rr.com>

tlviewer wrote:

> Next I'm going to load all 53 card resources into a list (array) of
> strings, then write it out, pickled. That should smooth out loading the
>game when I use 4-6 decks (Blackjack-21).

# -*- coding: cp1252 -*-
"""
    keywords: resource bitmap pickle
    description: pickle resources from cards.dll 
    requires: 
        Pygame from www.pygame.org, 
        PIL from www.pythonware.com/products/pil/ 
        
    WinXP out:
        63  ioerror
        64  ioerror
        66  resource skipped
        saving pickled list
        closing
        debugging <Surface(71x96x8 SW)> <rect(0, 0, 71, 96)>
        
"""

# imports
import win32api as wi 
import string as st 
import pygame as gm 
import Image as im 
import StringIO
import win32con as wc 

import os, sys
import pickle as pkl                        

# OS independent path -- win32 only
sysroot = os.environ.get('SYSTEMROOT') 

# get module handle for cards DLL
hnd = wi.LoadLibrary(sysroot + '/system32/cards.dll')

"""
    Loadresource returns the card image without a header! I dumped these
    header strings from ResourceHacker. There are only 2 kinds: one for the
    pictures, and one for Ace+numbers.
"""
# this header works for 71x96x1BPP image
pic_header = [ chr(0x42), chr(0x4D), chr(0xDE), chr(0x0D), chr(0x00), \
chr(0x00), chr(0x00), chr(0x00), chr(0x00), chr(0x00), chr(0x4A), \
chr(0x00), chr(0x00), chr(0x00)]
num_header = [ chr(0x42), chr(0x4D), chr(0xA0), chr(0x04), chr(0x00), \
chr(0x00), chr(0x00), chr(0x00), chr(0x00), chr(0x00), chr(0x20), \
chr(0x00), chr(0x00), chr(0x00)] 


fname = 'pkl_deck.dat'
fname = os.curdir + '/' + fname 
debugr=1 

#init main array to hold the cards as strings 
arr_cards=[]

def cards(fname):
#sheader = ''.join([ chr(header[x]) for x in range(len(header))]) 
    if debugr!=0:
        str = wi.LoadResource( hnd, 2, 1, 1033)       
        str = st.join(num_header,'') + str    
        fp = open( os.curdir + '/aceclub.bmp', "wb")        
        fp.write( str)        
        fp.close ()
        
    for i in range(1,68):
        #default header (num)
        #print "fetch ", i
        header = num_header
        if i % 13 > 10:
            header = pic_header
        try:            
            str = wi.LoadResource( hnd, wc.RT_BITMAP, i, 1033)
        except:
            print "%d" % i, " resource skipped"
            continue            
        str = st.join(header,'') + str
        try:
            obj = im.open(StringIO.StringIO(str)) 
            arr_cards.insert(i,obj.tostring())
        except IOError:
            print "%d" % i, " ioerror"
            pass            
    
    wi.FreeLibrary(hnd)    
    #    
    # pickle out the list
    print "saving pickled list"
    fp = open(os.curdir + '/pkl_deck.dat', "wb")
    try:
        pkl.dump( arr_cards, fp, 1) #binary size Win2k:312kB WinXP:445kB
    except:
        print "errored, but still closing file"
        fp.close()
    else:
        print "closing"                
        fp.close()    
    #fp = open("e:/batch/msdn/Bitmap_11.bmp", "rb") 
    
## main ##

# retrieve the deck from our pickled list, or repickle the list to file    

if not os.path.exists(fname):
    cards(fname)
else:
    fp = open(os.curdir + '/pkl_deck.dat','rb')
    val=fp.read()
    print "pickled list len=",len(val)
    fp.close 
    arr_cards=pkl.loads(val)
     
if debugr!=0:          
    img = gm.image.fromstring(arr_cards[11],(71,96),"P")   
    print "debugging",img, img.get_rect() 
   




From irmen.NOSPAM at xs4all.nl  Mon May 16 09:10:25 2005
From: irmen.NOSPAM at xs4all.nl (Irmen de Jong)
Date: Mon, 16 May 2005 15:10:25 +0200
Subject: Web server platform for beginner
In-Reply-To: <1116247947.853539.316620@g49g2000cwa.googlegroups.com>
References: <1116247947.853539.316620@g49g2000cwa.googlegroups.com>
Message-ID: <42889bc1$0$64748$e4fe514c@news.xs4all.nl>

Chris wrote:
> Hi,
> 
> I'm looking at python as a serious alternative for Windows Forms, C#
> and ASP.Net as it is completely open source.
> 
> I've determined that wxPython is the best replacement for Windows Forms
> but have not managed to find a comprehensive list of all the web
> platforms that python runs on apart from Zope and mod_python.
> 
> Are there any others which are simpler than mod_python handlers, yet
> not as extensive as Zope?

Have you seen http://wiki.python.org/moin/WebProgramming   ?

<biased>May I suggest to give Snakelets a try.</biased>

--Irmen


From danb_83 at yahoo.com  Sun May  1 01:08:20 2005
From: danb_83 at yahoo.com (Dan Bishop)
Date: 30 Apr 2005 22:08:20 -0700
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <mailman.47.1114818531.14961.python-list@python.org>
References: <d4u60o$akh$1@news2.netvision.net.il>
	<mailman.47.1114818531.14961.python-list@python.org>
Message-ID: <1114924100.296223.114020@g14g2000cwa.googlegroups.com>


Shane Hathaway wrote:
> pythonchallenge wrote:
> > For the riddles' lovers among you, you are most invited to take
part
> > in the Python Challenge, the first python programming riddle on the
net.
> >
> > You are invited to take part in it at:
> > http://www.pythonchallenge.com
>
> That was pretty fun.  Good for a Friday.  Too bad it comes to an
abrupt
> "temporary end".

They've added at least one more level since yesterday.  Unfortunately,
I'm stuck on it.



From jatinder at textualanalytics.com  Tue May 31 09:09:16 2005
From: jatinder at textualanalytics.com (Jatinder Singh)
Date: Tue, 31 May 2005 08:09:16 -0500
Subject: change vars in place w/loop or list comprehension
In-Reply-To: <1117547939.650578.316090@g47g2000cwa.googlegroups.com>
References: <1117547939.650578.316090@g47g2000cwa.googlegroups.com>
Message-ID: <1117544956.429c61fcd4822@mailbox.textualanalytics.com>

Hi 
what u can do over here is 
add a,b,c... in a list e.g. list.append(vars..)
and then use the statement
newlist = map(lambda x:x.upper(),list)
Now ur newlist will contain the modified list.
HOPE THIS THE BETTER SOLUTION TO UR PROBLEM


Quoting ken.boss at dnr.state.mn.us:

> I am a python newbie, and am grappling with a fundamental concept.  I
> want to
> modify a bunch of variables in place.  Consider the following:
> 
> >>> a = 'one'
> >>> b = 'two'
> >>> c = 'three'
> >>> list = [a, b, c]
> >>> for i in range(len(list)):
> ...   list[i] = list[i].upper()
> ...
> >>> [a, b, c] = list
> >>> a
> 'ONE'
> 
> or, better:
> 
> >>> a = 'one'
> >>> b = 'two'
> >>> c = 'three'
> >>> [a, b, c] = [s.upper() for s in [a, b, c]]
> >>> a
> 'ONE'
> 
> Both of these accomplish what I'm after; I prefer the second for its
> brevity.
> But either approach requires that I spell out my list of vars-to-alter
> [a, b, c] twice.  This strikes me as awkward, and would be difficult
> with longer lists. Any suggestions for a better way to do this?
> 
> --Ken
> 
> -- 
> http://mail.python.org/mailman/listinfo/python-list
> 


-- 
Regards,
Jatinder Singh

? Everyone needs to be loved... especially when they do not deserve it.?


From peter at engcorp.com  Sat May 14 10:40:32 2005
From: peter at engcorp.com (Peter Hansen)
Date: Sat, 14 May 2005 10:40:32 -0400
Subject: Build-in or user-defined exceptions?
In-Reply-To: <87mzqykl1x.fsf@wilson.rwth-aachen.de>
References: <87mzqykl1x.fsf@wilson.rwth-aachen.de>
Message-ID: <l9-dnanll_JDkBvfRVn-sA@powergate.ca>

Torsten Bronger wrote:
> I write a module, and so I must raise exceptions at several points.
> The PEP 8 says that a module should define their own exceptions base
> class, derived from "Exception", and derivatives of that.
> 
> However, the build-in exceptions cover most of the error types that
> occur in a standard program.  For example, my module communicates
> with measurement instruments, so any communication error would fit
> perfectly to the build-in "IOError", wouldn't it?  

No... *any* communication error?  What if it's an error in the serial 
port layer, or the protocol layer, or the application layer handling 
that communication?  Wouldn't SerialError, ProtocolError, or 
UnrecognizedResponseError (or things like that) be much more readable. 
I find fine-grained app-specific exceptions to be very helpful in 
writing code that talks to machines.

> Invalid arguments
> can raise "TypeError"s, and so on and so forth.

Likewise, RangeError, InvalidAddressError, and the like seem more 
helpful to me, most of the time.

I guess I pretty much follow PEP8 (though I don't recall its details 
right now) since I derive from Exception things like DriverError and 
then derive more specific exceptions from that as needed (in the case of 
a driver module), or ProtocolError and children, etc..

> Is it considered good style to raise build-in exceptions whereever
> one thinks it's appropriate?  Is the definition of module exceptions
> derived from "IOError", "TypeError" etc. a good idea?  Is there some
> sort of style guide for recommended exceptions design in Python?

As Fredrik recommends, use your own judgment, but I believe that one 
should use a very narrow definition for those exceptions.  For example, 
TypeError should be used specifically when the code involved has 
received an object of the wrong type and *not* (for example) when a 
driver receives the wrong "type" of command from another device.

I sometimes derive from things like ValueError (rather than just 
Exception) when it seems appropriate, but that's pretty rare, and it's 
also not what the docs themselves recommend.

Be guided by the descriptions of those exceptions in the docs and not by 
their names alone.  See 
http://docs.python.org/lib/module-exceptions.html for more and be sure 
to read the descriptions of the base classes, not just the subclasses.

-Peter


From rune.strand at gmail.com  Mon May  9 19:01:02 2005
From: rune.strand at gmail.com (runes)
Date: 9 May 2005 16:01:02 -0700
Subject: Unique Elements in a List
In-Reply-To: <1115678197.064079.28220@o13g2000cwo.googlegroups.com>
References: <1115676903.432187.294910@z14g2000cwz.googlegroups.com>
	<1115678197.064079.28220@o13g2000cwo.googlegroups.com>
Message-ID: <1115679662.521731.297510@f14g2000cwb.googlegroups.com>

This is not the most beautiful idiom, but it works...

d = {}
for k in data:
    try:
        d[k] += 1
    except:
        d[k] = 1

for k,v in d.items():
    if v == 1:
        print k



From plsullivan63 at gmail.com  Mon May 16 12:53:36 2005
From: plsullivan63 at gmail.com (plsullivan)
Date: 16 May 2005 09:53:36 -0700
Subject: newbie - variable "buried in quotes"
References: <1116260476.332975.87680@g49g2000cwa.googlegroups.com>
	<tdvml2-9ii.ln1@Bernd.Nawothnig.dialin.t-online.de>
Message-ID: <1116262416.305181.5320@g44g2000cwa.googlegroups.com>

If I follow your response Bernd, it looks like you interpreted that as
several lines. It actually should all be on one line. That's what made
me wonder if there is a line continuation character.
Phil



From hancock at anansispaceworks.com  Wed May 11 11:30:12 2005
From: hancock at anansispaceworks.com (Terry Hancock)
Date: Wed, 11 May 2005 10:30:12 -0500
Subject: __brace__ (PEP?)
In-Reply-To: <200505081629.03520.jstroud@mbi.ucla.edu>
References: <200505081629.03520.jstroud@mbi.ucla.edu>
Message-ID: <200505111030.12357.hancock@anansispaceworks.com>

On Sunday 08 May 2005 06:29 pm, James Stroud wrote:
> If "__call__" allows anobject() and "__getitem__" allows anobject[arange], why 
> not have "__brace__" (or some other, better name) for anobject{something}. 
> Such braces might be useful for cross-sectioning nested data structures:
[...]
> Though I positively can not see what is wrong with this suggestion, I am sure 
> this will raise more than a few objections. Please bash my naivete publicly 
> on the list.

I think it's backwards to come up with some symbolic syntax that we haven't
used and then flail around looking for a semantics application.

It's good to think that we have such options still (despite the fact that the
small space of symbolic operators is getting fairly full and fairly overloaded
already).  But surely the right approach is to wait until a pressing need for
some new semantics comes along, and *then* flail around looking for the
right syntax to represent it?

I think this is whence comes the criticism for the use case you made --- it
doesn't seem compelling enough an application to warrant fundamental
additions to Python's syntax.

Also, I think you have to realize that Python has chosen a very definite
design trade in making *most* operations loadable by module and making
most syntax use words, because those approaches are better self-documenting.

Symbolic language is reserved for only the very most common operations
where the overhead of using a word operator like "PLUS" would just be
ludicrous (Cobal anyone?).  I think it's a good design decision, and I
suspect it accounts for an awful lot of my intuitive preference for Python
over languages like Perl.

I agree that the syntax could be made to work, and I'm intrigued by
the thought.  But no, we don't need it, so we shouldn't do it.

The comparison to __call__ is a bit spurious. We need that, because we
need the ability to make classes act like functions for interface reasons.
We need __getitem__ because we need them to act like sequences or
collections at other times.  What would __brace__  make the class act
like?  I think it's just "something else", and that can be handled with
methods.

--
Terry Hancock ( hancock at anansispaceworks.com )
Anansi Spaceworks  http://www.anansispaceworks.com



From vito_sc at hotmail.com  Tue May  3 15:27:16 2005
From: vito_sc at hotmail.com (v (togli))
Date: Tue, 03 May 2005 19:27:16 GMT
Subject: Form and Database
Message-ID: <ogQde.78771$IN.1346884@twister2.libero.it>

Please help..... I'm new with Python.
Using Boa (or Pythoncard) and pysqlite, how can I read/write from/to
database, thanks




From smokerdude66 at myway.com  Wed May 11 13:57:27 2005
From: smokerdude66 at myway.com (MC05)
Date: Wed, 11 May 2005 10:57:27 -0700
Subject: Jesus said, "I am the way,
	the truth and the life: no one can come to the Father(God)(in Heaven),
	but by me." (John 14:6) This means that if you die without trusting in
	Jesus Christ as your Lord and Saviour you will die in your sins
	and be forever sepa
References: <1115824563.613661.169620@g47g2000cwa.googlegroups.com>
	<M%qge.1317047$Xk.244810@pd7tw3no> <3eeta6F2m45kU1@individual.net>
	<1115832484.237918.53830@o13g2000cwo.googlegroups.com>
Message-ID: <3eevb8F2pac7U1@individual.net>


"Matt Hayden" <meh1963 at gmail.com> wrote in message
news:1115832484.237918.53830 at o13g2000cwo.googlegroups.com...
>
> MC05 wrote:
> > "don freeman" <dfreem3 at nospam.shaw.ca> wrote in message
> > news:M%qge.1317047$Xk.244810 at pd7tw3no...
> > > The truth is, Jesus should never have torn down the fig tree. He
> got so
> > > pissed off at the fig tree for not having figs, even though it
> wasn't
> > > fig season. This was not the action of someone who has even a
> little
> > > truth and light.
> > >
> > > Imagine if Jesus came back now. I'd hate to see his road rage.
> >
> > I'm sure he'd drive fine.
> >
> > But if a fig tree pulled in front of him.......woof!!
> > >
>
> What if a fig leaf pulled off in front of him?

I suppose he could point at what he saw and wither it.
>




From pdemb at gazeta.pl  Mon May 16 14:30:21 2005
From: pdemb at gazeta.pl (Peter Dembinski)
Date: Mon, 16 May 2005 20:30:21 +0200
Subject: question about the id()
References: <428809fc.62d7a08a.1cfe.ffffd7ef@mx.gmail.com>
	<mailman.23.1116212733.8733.python-list@python.org>
	<873bsnxhe0.fsf@hector.domek> <4288d546.86043504@news.oz.net>
Message-ID: <87hdh3vxaa.fsf@hector.domek>

bokr at oz.net (Bengt Richter) writes:

[snap]

>>So, the interpreter creates new 'point in address space' every time
>>there is object-dot-method invocation in program?

[optimization]

> BTW, a typical performance optimization (not done automatically by python)
> is to hoist unchanging-value expressions out of loops, and obj.method is
> often such an expression, so you will this strategy when people try
> to squeeze extra performance from their programs.

Good to know.  Is there any advanced optimizer for Python code, which
would do such things for me (or suggest them, like pychecker does 
for readability)?

-- 
http://www.peter.dembinski.prv.pl


From cotyspend at yahoo.com  Tue May 31 23:10:20 2005
From: cotyspend at yahoo.com (nephish)
Date: 31 May 2005 20:10:20 -0700
Subject: Rss lib in python?
In-Reply-To: <c68cb37c.0505311838.2a4d7b65@posting.google.com>
References: <c68cb37c.0505311838.2a4d7b65@posting.google.com>
Message-ID: <1117595420.493606.189760@o13g2000cwo.googlegroups.com>

Hey man, i would like to know this too.
hope someone knows...



From jerf at jerf.org  Wed May  4 14:29:23 2005
From: jerf at jerf.org (Jeremy Bowers)
Date: Wed, 04 May 2005 14:29:23 -0400
Subject: empty lists vs empty generators
References: <509534af.0505021514.5e49aa2@posting.google.com>
	<pan.2005.05.03.01.32.03.187701@jerf.org>
	<wl4ee.2865$Cz3.445354@monger.newsread.com>
Message-ID: <pan.2005.05.04.18.29.22.758200@jerf.org>

On Wed, 04 May 2005 13:45:00 +0000, Leif K-Brooks wrote:

> Jeremy Bowers wrote:
>>     def __init__(self, generator):
>>         self.generator = generator
> 
> You'll want to use iter(generator) there in order to handle reiterables.

Can you expand that explanation a bit? I'm not certain what you mean. I'm
just trusting what the user passes in; maybe the user should pass it
iter(generator) when it's a "reiterable"? (Honest question.) 

What definition of "re-iterable" are you using? (A quick google for
"Python reiterabile" just turns up some Python dev list entries from 2003.)



From peter at engcorp.com  Wed May  4 08:32:48 2005
From: peter at engcorp.com (Peter Hansen)
Date: Wed, 04 May 2005 08:32:48 -0400
Subject: Read / Write image file
In-Reply-To: <1115208396.640095.155190@g14g2000cwa.googlegroups.com>
References: <mailman.634.1115148003.6582.python-list@python.org>
	<mailman.125.1115151448.6583.python-list@python.org>
	<1115208396.640095.155190@g14g2000cwa.googlegroups.com>
Message-ID: <idudnYSgq7VqXeXfRVn-iA@powergate.ca>

codecraig wrote:
> so something like,
> 
> x = sock.recv(1024)
> while (len(x) > 0):
>     # do stuff
>     x = sock.recv(1024)
> 
> 
> ??
> 
> So what if the client sends 4 bytes, and then sends 8000 bytes?  WIll I
> get the first 4 bytes as a separate msg so to speak?  Basically i want
> to catch each message from the client as a whole.

You cannot guarante *anything* except that (I believe) you will not 
receive zero bytes from .recv() as long as the socket is open.

Those four bytes the client sends: technically they could come as any 
combination, including four separate one-byte packets (though that is at 
least highly unlikely, if not actually impossible in practice).  The 
8000 bytes?  Some of them could actually arrive with the four bytes, and 
they could also be split into many smaller packets, with you having 
absolutely no say in the matter, and no way to control it.

Don't fight the way TCP works: learn to use it the way everyone else 
does, or better yet: don't reinvent the wheel.  Use an existing package 
that already does all the low-level stuff that you are trying to do and 
which does it reliably.  Twisted, some of the standard library options, 
or something else.  At the very least, look at some existing code to see 
how complex it has to be to work reliably, or look at a book like the 
Nutshell book to learn to do it properly.

-Peter


From skip at pobox.com  Fri May 20 16:16:49 2005
From: skip at pobox.com (Skip Montanaro)
Date: Fri, 20 May 2005 15:16:49 -0500
Subject: Comparing 2 similar strings?
In-Reply-To: <d6ldp2$aud$1@sea.gmane.org>
References: <24a6d$428b9c10$d1b717f8$2300@PRIMUS.CA>
	<428BA05D.1010600@lsupcaemnt.com>
	<3d9n815cpmavos1fl6ts712h9qogdv3fur@4ax.com>
	<tOydnZJPi5FmeBbfRVn-3A@comcast.com>
	<238o815u215232b62m0nlvcaagu50sqngf@4ax.com>
	<d6ldp2$aud$1@sea.gmane.org>
Message-ID: <17038.17841.137861.487718@montanaro.dyndns.org>


    Steve> (is this the same as 'Conchobar'?)

No, that's a trendy pub in Key West...

<wink>

Skip


From chrisconnett at gmail.com  Thu May 19 03:22:33 2005
From: chrisconnett at gmail.com (chrisconnett at gmail.com)
Date: 19 May 2005 00:22:33 -0700
Subject: Comparing 2 similar strings?
References: <24a6d$428b9c10$d1b717f8$2300@PRIMUS.CA><428c0d21$1@nntp0.pdx.net>
Message-ID: <1116487353.934354.195940@g43g2000cwa.googlegroups.com>

Could hit a few snags.  Quick out-of-the-library compression using
standards like zlib will have headers that will dilute the difference
on short strings, and on long strings block compression (zlib, bzip2)
will not pick up similarities because the similarities will be in
different blocks.  With blocks of around 100k-1M in these algos by
default (IIRC),  this could work well for strings between oh say
1k-50k.

But I need to underscore Aahz's posting above:

***Check out difflib, it's in the library.***  Perfect package for what
the OP wants AFAICT.



From msoulier at gmail.com  Tue May  3 12:09:59 2005
From: msoulier at gmail.com (Michael Soulier)
Date: Tue, 3 May 2005 12:09:59 -0400
Subject: Any decent IM protocol implementations (icq or aim)
In-Reply-To: <d52c72d205050307224a8b7259@mail.gmail.com>
References: <d52c72d205050307224a8b7259@mail.gmail.com>
Message-ID: <fb66056705050309095d9f0f24@mail.gmail.com>

On 5/3/05, Jaime Wyant <programmer.py at gmail.com> wrote:
> Can anyone recommend one?  Google isn't giving me much.

http://jabberpy.sourceforge.net/

Mike

-- 
Michael P. Soulier <msoulier at gmail.com>
http://www.digitaltorque.ca
http://opag.ca      python -c 'import this'


From anton.vredegoor at gmail.com  Tue May 17 10:33:02 2005
From: anton.vredegoor at gmail.com (Anton Vredegoor)
Date: 17 May 2005 07:33:02 -0700
Subject: Python on a public library computer
In-Reply-To: <v86i81986tims5f0mt8aplfq4egqb2reb1@4ax.com>
References: <1116069664.779281.320540@g47g2000cwa.googlegroups.com>
	<v86i81986tims5f0mt8aplfq4egqb2reb1@4ax.com>
Message-ID: <1116340382.835620.205170@g49g2000cwa.googlegroups.com>

Christos TZOTZIOY Georgiou wrote:

> I am not sure I will help you (uncertainty based on the part I
snipped),
> but the part so far can be easilly solved if you install Python for
> single user inside the "Documents and settings\<username>" folder (or
> whatever it is called).  I did in a similar case.

.msi is blocked by the appguard. I knew that because I tried it a week
ago, but just to be sure I tried again.

> End of reply here; and now for some completely minor python success
> story.

[snip story]
>

Thanks, that was a nice story! However I still think ... But you know
what I think by now don't you :-)

Anton

'python3000server at python.org>>> import NNTP                  '



From dalke at dalkescientific.com  Mon May 16 15:48:18 2005
From: dalke at dalkescientific.com (Andrew Dalke)
Date: Mon, 16 May 2005 19:48:18 GMT
Subject: ElemenTree and namespaces
References: <d6an8t$554$1@vegh.ks.cc.utah.edu>
Message-ID: <pan.2005.05.16.19.48.17.41415@dalkescientific.com>

Matthew Thorley wrote:
> Does any one know if there a way to force the ElementTree module to
> print out name spaces 'correctly' rather than as ns0, ns1 etc? Or is
> there at least away to force it to include the correct name spaces in
> the output of tostring?

See http://online.effbot.org/2004_08_01_archive.htm#20040803
(starting with "more xml").  That was a response to Uche's article at
  http://www.xml.com/pub/a/2004/06/30/py-xml.html
and with a followup at
  http://www.xml.com/pub/a/2004/08/11/py-xml.html

				Andrew
				dalke at dalkescientific.com



From steven.bethard at gmail.com  Thu May 26 01:30:00 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Wed, 25 May 2005 23:30:00 -0600
Subject: __init__() not called automatically
In-Reply-To: <mailman.121.1117083356.18027.python-list@python.org>
References: <1117081917.760603.82610@z14g2000cwz.googlegroups.com>
	<mailman.121.1117083356.18027.python-list@python.org>
Message-ID: <II6dnf-RIYhEwwjfRVn-hA@comcast.com>

Paul McNett wrote:
> Sriek wrote:
>> i come from a c++ background. i ws happy to find myself on quite
>> familiar grounds with Python. But, what surprised me was the fact that
>> the __init__(), which is said to be the equivlent of the constructor in
>> c++, is not automatically called. 
> 
[snip]
> 
> It is true that if 
> you derive from A and override __init__, A.__init__ won't be called 
> unless done so explicitly like:
> 
> class B(A):
>     def __init__(self):
>         print "in B.__init__()"
>         super(B, self).__init__()
> 
>> I'm sure there must be ample reason
>> for this. I would like to know why this is so? This is my view is more
>> burden on the programmer.
> 
> It isn't that much practical burden, and IMO it makes perfect sense. 
> When you override a method of a class, you want to have to explicitly 
> call superclass code, not have it run automatically, else you lose 
> control of the flow.

I'd like to reiterate this point.  Say I have a class like:

class A(object):
     def __init__(self, x):
         self.x = x
         print 'A.__init__'

and an inheriting class like:

class B(A):
     def __init__(self, y):
         ...
         print 'B.__init__'
         ...

If 'y' is the same thing as 'x', then I probably want to write B like:

class B(A):
     def __init__(self, y):
         super(B, self).__init__(y)
         print 'B.__init__'

But what if 'x' has to be computed from 'y'?  Then I don't want the 
super call first.  I probably want it last (or at least later), e.g.:

class B(A):
     def __init__(self, y):
         print 'B.__init__'
         x = self._compute_x(y)
         super(B, self).__init__(x)

If the superclass constructor is automatically called, how will it know 
which meaning I want for 'y'?  Is 'y' equivalent to 'x', or is it 
something different?  Since Python can't possibly know this for sure, it 
refuses the temptation to guess, instead requiring the user to be explicit.

STeVe


From crichton314 at tiscali.co.uk  Wed May  4 10:20:16 2005
From: crichton314 at tiscali.co.uk (john)
Date: 4 May 2005 07:20:16 -0700
Subject: descriptor dilemma
Message-ID: <1115216416.700492.71020@f14g2000cwb.googlegroups.com>

Hello,

I was wondering if someone could explain the following situation to me
please:

>>> class C(object):
        def f(self):
                pass
>>> c = C()
>>> c.f
<bound method C.f of <__main__.C object at 0x00B25950>>
>>> C.__dict__['f'].__get__(c,C)
<bound method C.f of <__main__.C object at 0x00B25950>>
>>> c.f == C.__dict__['f'].__get__(c,C)
True
>>> c.f is C.__dict__['f'].__get__(c,C)
False

Why do c.f and C.__dict__['f'].__get__(c,C) compare as equal under ==
but not under *is*  ?

Thanks,

John



From skip at pobox.com  Wed May 11 15:27:46 2005
From: skip at pobox.com (Skip Montanaro)
Date: Wed, 11 May 2005 14:27:46 -0500
Subject: Python Documentation (should be better?)
In-Reply-To: <d5tke6$kae$2@sea.gmane.org>
References: <d5tjng$kae$1@sea.gmane.org>
        <d5tke6$kae$2@sea.gmane.org>
Message-ID: <17026.23730.86947.151346@montanaro.dyndns.org>


    Christopher> The intricacies of the computing term "greedy" aside, yes I
    Christopher> think the Python documentation should generally be better.
    Christopher> What that means, I have no idea.  All I know is that I like
    Christopher> PHP's documentation and it should be like that.

It would help if you could narrow the scope down a bit. ;-)  Can you spend a
little time comparing and contrasting the online Python and PHP docs and
make some specific comments?

    Christopher> My question is, why is PHP's documentation so good and
    Christopher> Python's mediocre?

I don't think it's so much that Python's documentation is mediocre.  I think
most of what you need is there (I count about 110k lines of LaTeX source
split over a hald dozen chunks of documentation).  It may be that it's not
all that well organized for online searching/contribution/annotation.  It's
more book-like.  That may be largely due to the fact that it's written in
LaTeX which doesn't lend itself well to a highly interactive end result.

Google helps.  If you search for the terms you're interested in at
http://docs.python.org/ your search will be restricted to the official
online docs.  That might help a bit.  Also, I find the module index to be
the most useful bit of documentation to have handy:

    http://docs.python.org/lib/modindex.html

    Christopher> Does it have to do with corporate backing (I have no idea
    Christopher> if PHP is or not, I'm just saying)?  The quality/quantity
    Christopher> of volunteers?  The design of the language itself?

There does seem to be a very high ratio of people who complain about the
documentation to people who write the documentation.  Many of us with little
time but a modicum of LaTeX knowledge are willing to mark up plain text
patches to the documentation.

If you're interested in seeing what's going in in the Python documentation
world, browse the doc-sig's archives:

    http://mail.python.org/pipermail/doc-sig/

Skip


From giles_brown at hotmail.com  Mon May 23 05:57:30 2005
From: giles_brown at hotmail.com (Giles Brown)
Date: 23 May 2005 02:57:30 -0700
Subject: how to config a comserver in a customize dll?
References: <mailman.237.1116556324.8733.python-list@python.org>
	<0bt2919dke9qaticnc9fbk6ii60mah68ha@4ax.com>
Message-ID: <1116842250.867081.239900@f14g2000cwb.googlegroups.com>

But just to muddy the waters, using py2exe you can package your COM
server as a .dll in its own right.

Cheers,
Giles Brown



From hemagician at gmail.com  Wed May 11 12:32:56 2005
From: hemagician at gmail.com (hemagician at gmail.com)
Date: 11 May 2005 09:32:56 -0700
Subject: Finding startup files
References: <mailman.375.1115827885.29826.python-list@python.org>
Message-ID: <1115829176.541687.22090@z14g2000cwz.googlegroups.com>

The following script demonstrates a method that should work for you. I
believe it is entirely cross-platform.

#! /usr/bin/python

import sys
import os

print os.path.abspath(os.path.dirname(sys.argv[0]))



From dwelch at vcd.hp.com  Mon May  9 17:58:08 2005
From: dwelch at vcd.hp.com (djw)
Date: Mon, 09 May 2005 14:58:08 -0700
Subject: pyvm -- faster python
In-Reply-To: <7xhdhd4kno.fsf@ruckus.brouhaha.com>
References: <mailman.164.1115548611.29826.python-list@python.org>
	<7xhdhd4kno.fsf@ruckus.brouhaha.com>
Message-ID: <d5omko$4te$1@news.vcd.hp.com>

Paul Rubin wrote:
> Stelios Xanthakis <sxanth at ceid.upatras.gr> writes:
> 
>>- The demo is an x86/linux binary only. You shouldn't trust binaries,
>>   run it in a chrooted environment not as root!
> 
> 
> Are you going to release the source?  If not, it's a lot less interesting.

 From the website:

"...the source will be released when it becomes more complete and stable."


From kent37 at tds.net  Tue May  3 22:00:13 2005
From: kent37 at tds.net (Kent Johnson)
Date: Tue, 03 May 2005 22:00:13 -0400
Subject: xml.parsers.expat and utf-8
In-Reply-To: <1115135968.071417.42560@z14g2000cwz.googlegroups.com>
References: <1115135968.071417.42560@z14g2000cwz.googlegroups.com>
Message-ID: <42782825$1_3@newspeer2.tds.net>

dagurp at gmail.com wrote:
> I have this code:
> 
> import xml.parsers.expat
> parser = xml.parsers.expat.ParserCreate(encoding="UTF-8")
> text = unicode("<div>??r?ur</div>",'UTF-8')

I think you want
   text = u"<div>??r?ur</div>".encode('UTF-8')
so text is a UTF-8 string.

Kent


From brokenclock at free.fr  Mon May  2 10:26:39 2005
From: brokenclock at free.fr (BrokenClock)
Date: Mon, 02 May 2005 16:26:39 +0200
Subject: pop3proxy
In-Reply-To: <just-B17F7F.16113702052005@news1.news.xs4all.nl>
References: <4276329a$0$289$636a15ce@news.free.fr>
	<just-B17F7F.16113702052005@news1.news.xs4all.nl>
Message-ID: <427637a0$0$319$636a15ce@news.free.fr>

Thank you! At a first glance, it seems to be very similar to what I 
need. More to come when I go deeper...

Just a ?crit :
> In article <4276329a$0$289$636a15ce at news.free.fr>,
>  BrokenClock <brokenclock at free.fr> wrote:
> 
> 
>>Here is a python newbie! I've choose it to make a pop3 proxy - I want to 
>>filter content between a pop3 client and a pop3 server, and I have no 
>>control on the server...
>>First, I wanted to do an non-filtering, just logging, mono-thread proxy 
>>to make some test..
> 
> 
> Not directly helpong with your problem, but perhaps some example code 
> helps: the spambayes project contains a working pop3 proxy.
> 
> Just


From phillip.watts at anvilcom.com  Mon May 30 16:05:03 2005
From: phillip.watts at anvilcom.com (phil)
Date: Mon, 30 May 2005 15:05:03 -0500
Subject: Unicode Congruence
References: <mailman.255.1117477447.18027.python-list@python.org>
	<429B6342.6040607@lexicon.net>
Message-ID: <429B71EF.5070708@anvilcom.com>

Thanks.
I did search that site but, wow, huge.
That page had no reference to congruence
and the pdf did not contain the pattern
congru.
But I'll have some better ideas how to search next
time.
thanx
I used \u2245 btw

John Machin wrote:

> phil wrote:
> 
>>I can't find,
>>
> 
> Having looked where?
> 
> 
>>anyone know the unicode symbol
>>CONGRUENT.
>>either tilde over equal or triple
>>tidde would do.
>>Thanks.
>>
>>
> 
> Go to
> 
> http://www.unicode.org
> 
> click on:
>   	  Where is my Character?
> 
> follow your nose till you get to:
> 
> http://www.unicode.org/charts/symbols.html
> 
> What you need is:
> 
> http://www.unicode.org/charts/PDF/U2200.pdf
> 





From km at mrna.tn.nic.in  Wed May  4 15:21:25 2005
From: km at mrna.tn.nic.in (km)
Date: Thu, 5 May 2005 00:51:25 +0530
Subject: OOPS concept
In-Reply-To: <42787b58$1_2@rain.i-cable.com>
References: <42787b58$1_2@rain.i-cable.com>
Message-ID: <20050504192125.GA24333@mrna.tn.nic.in>

Hi all,

Well this doesnt explain new style classes. let me be more clear. is there any online tutorial/ recommended book which deals explicitly with object oriented programming in python?

regards,
KM
---------------------------------------------------------------------------
> Try this online book, it may help, the url is:  http://www.byteofpython.info
> 
> > Hi all,
> >
> > Is there any good step by step online tutorial on OOPS concepts in python
> ?
> > i have checked some on the python.org.__doc__ page but couldnt make much
> sense.  especially i need help on newstyle classes.
> >
> > regards,
> > KM
> 
> 
> -- 
> http://mail.python.org/mailman/listinfo/python-list
> 



From awb at fluent.com  Thu May 19 13:19:46 2005
From: awb at fluent.com (Andrew Bushnell)
Date: Thu, 19 May 2005 13:19:46 -0400
Subject: SSL (HTTPS) with 2.4
In-Reply-To: <20050519171716.GA16953@heaven.kostyrka.org>
References: <1116406256.213128.68180@f14g2000cwb.googlegroups.com>
	<grGie.3984$uR4.2802@newsread2.news.atl.earthlink.net>
	<1116422715.320683.228810@g49g2000cwa.googlegroups.com>
	<1116424363.953180.79260@g47g2000cwa.googlegroups.com>
	<1116424660.917136.79680@g47g2000cwa.googlegroups.com>
	<428b7bc5$0$7346$9b622d9e@news.freenet.de>
	<1116463961.944713.210860@g49g2000cwa.googlegroups.com>
	<mailman.208.1116513082.8733.python-list@python.org>
	<1116521081.100575.70720@f14g2000cwb.googlegroups.com>
	<428CC477.6070508@fluent.com>
	<20050519171716.GA16953@heaven.kostyrka.org>
Message-ID: <428CCAB2.30904@fluent.com>

Thanks for the feedback. andreas. I am looking into how to work my own 
connection logic into the code. Google has quickly become my friend and 
I am actually poking at cURL (pyCurl) to see what benefit it will be.

Thanks again.


andreas at kostyrka.org wrote:

> Hi!
> 
> HTTPS over a proxy (CONNECT) hasn't worked for a long time in python
> (actually it has never worked).
> 
> A quick glance at the 2.4 Changelog doesn't suggest that this has been
> fixed.
> 
> So basically you've got the following options:
> a) redo your own http/https support.
> b) look around on the net for some patches to httplib (google is your friend)
>    be aware that these are quite old patches.
> c) using some external solution, like pycURL.
> 
> Andreas
> 
> 
> On Thu, May 19, 2005 at 12:53:11PM -0400, Andrew Bushnell wrote:
> 
>>Thanks for the update. I will/can keep you posted. I know for a fact we 
>>use a Squid proxy which sounds like what you are using. I am going to 
>>check out the faq you sent and see what it comes up with. I have also 
>>been perusing the net a bit and looking at other client packages and see 
>>if they work, such as cURL etc.
>>
>>Thanks,
>>
>>Andrew
>>
>>Bloke wrote:
>>
>>>Andrew,
>>>
>>>It seems I'm not the only one going nuts here.  I have just spent the
>>>last 4 hrs stepping through the code in the debugger.  It seems to get
>>>stuck somewhere in the socket module (when it calls ssl) but haven't as
>>>yet figured out exactly where.
>>>
>>>I am _very_ interested to find that you have the same prob with a
>>>non-authenticating proxy.  I had considered I was doing something wrong
>>>with the authentication, but from what you say, and from what I have
>>>deduced from the code, it is not the authentication that is at fault.
>>>
>>>Like you, a standard browser works fine, so I'm inclined to think there
>>>is something buggy with the way the sockets module talks to the proxy.
>>>There has been some suggestion that it may me a 'Microsoftish' proxy
>>>which is at fault, but I believe it is a Squid proxy our company uses.
>>>
>>>There is an interesting note here (
>>>http://www.squid-cache.org/Doc/FAQ/FAQ-11.html  setcion 11.34 )
>>>regarding malformed https requests sent through Squid with buggy
>>>clients.  It may be worth looking into.
>>>
>>>Anyway, if you have any luck, _please_ let me know - I'm getting
>>>desparate.
>>>
>>
>>-- 
>>************************************
>>Andrew Bushnell
>>Lead Development Engineer
>>Fluent Inc.
>>10 Cavendish Court
>>Centerra Resource Park
>>Lebanon, NH  03766
>>awb at fluent.com
>>Phone: 603-643-2600, ext. 757
>>Fax: 603-643-1721
>>www.fluent.com
>>************************************
>>-- 
>>http://mail.python.org/mailman/listinfo/python-list
> 
> 

-- 
************************************
Andrew Bushnell
Lead Development Engineer
Fluent Inc.
10 Cavendish Court
Centerra Resource Park
Lebanon, NH  03766
awb at fluent.com
Phone: 603-643-2600, ext. 757
Fax: 603-643-1721
www.fluent.com
************************************


From mackstevenson at hotmail.com  Thu May 19 19:01:18 2005
From: mackstevenson at hotmail.com (MackS)
Date: 19 May 2005 16:01:18 -0700
Subject: readline module and white-space
Message-ID: <1116543678.667632.47670@f14g2000cwb.googlegroups.com>

Dear all,

I'm trying to use Python's readline module but I'm having some trouble.
In particular,  autocompletion seems to "get stuck" on white spaces.
Please take a look at this code snippet:


import readline

def completer(text, state):

    text = text

    list = ['a dog', 'artsy']

    if len(text) == 0: expressions = list

    else: expressions = [expression for expression in list if
expression.startswith(text)

    try:
        return expressions[state]
    except IndexError:
        return None

    return

# main code:

readline.parse_and_bind("tab: complete")
readline.set_completer(completer)

string = raw_input("type something: ")
print "typed: " + string


If I type "a" at the prompt and then press tab, both options are
displayed. However, if I then type "[space]d" and then once again ask
for auto-completion (I would expect getting "a dog" filled in for me)
nothing happens.

What am I doing wrong? Can I expect auto-completion to correctly handle
this case?

Thanks in advance for any help,

Mack



From kay.schluehr at gmx.net  Thu May  5 11:24:56 2005
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: 5 May 2005 08:24:56 -0700
Subject: Hard times with packages and instances
Message-ID: <1115306696.185751.234020@o13g2000cwo.googlegroups.com>

Hi people,

I wonder why the isinstance() function is sensitive about the import
path i.e. the result depends not only on the class and the instance but
also on how a class is imported?

Example:

MyPackage/			Top-level package
      __init__.py		Initialize package
      __me__.py                 Module used for setting Python-path
      A.py                      Use objects of ForeignPackage and
                                subpackages
      ForeignPackage/		Don't touch!
            __init__.py         Initialize package
            B.py                Defines class B1
      MySubPackage/		Subpackage
            __init__.py         Initialize subpackage
	    C.py                Defines instance checker for B1 instances


Provide some implementations:

_____________________________________________________________________________

# MyPackage.__init__.py

import __me__
__me__.setmypath()


# MyPackage.__me__.py

def setmypath():
    import __me__
    import inspect
    import sys
    absfile = inspect.getabsfile(__me__)
    abspath =
"/".join(absfile.split("/")[:-1]+absfile.split("\\")[:-1])
    sys.path.append(abspath)


# MyPackage.A.py

from MySubPackage.C import*
from ForeignPackage.B import*

b1 = B1()
checkInstance(b1)
#print b1.__class__


# MyPackage.ForeignPackage.__init__.py
# left empty

# MyPackage.ForeignPackage.B.py

class B1(object):
    def __init__(self):pass


# MyPackage.MySubPackage.C.py

import MyPackage
import ForeignPackage.B as B
#import MyPackage.ForeignPackage.B as B

def checkInstance(inst):
    if isinstance(inst,B.B1):
        print "class is %s"%inst.__class__
    else:
        raise TypeError,"Instance of unknown class '%s'
found"%inst.__class__

____________________________________________________________________________


No run A.py :

A will call checkInstance with a B1 instance and prints

   "class is <class 'MySubPackage.B.B1'>"

as expected.

But if one comments in the line

  import MyPackage.ForeignPackage.B as B

in module C.py and calls A.py one gets:

Traceback (most recent call last):
...
TypeError: Instance of unknown class '<class 'ForeignPackage.B.B1'>'
found

The class which was expected by the checkInstance() function is

   <class 'MyPackage.ForeignPackage.B.B1'>


I'm curios if someone could explain me the difference between this two
class objects?

Regards,
Kay



From hancock at anansispaceworks.com  Sat May  7 03:21:45 2005
From: hancock at anansispaceworks.com (Terry Hancock)
Date: Sat, 7 May 2005 02:21:45 -0500
Subject: Reg strip_tags function in Python.
In-Reply-To: <20050507062504.74842.qmail@web8410.mail.in.yahoo.com>
References: <20050507062504.74842.qmail@web8410.mail.in.yahoo.com>
Message-ID: <200505070221.45783.hancock@anansispaceworks.com>

On Saturday 07 May 2005 01:25 am, praba kar wrote:
> In Php I can use strip_tags() function to strip out
> all html tags. I want to know that strip_tags()
> equivalent function in Python.

AFAIK, there's no such thing in the standard library,
however there is a very nice pure python module called
stripogram which provides functions both for completely
stripping HTML and for allowing a subset of it (if, for
example, you would like to keep bold and italic formatting,
but nothing else).

Just google for "stripogram", it's hosted at zope.org.

--
Terry Hancock ( hancock at anansispaceworks.com )
Anansi Spaceworks  http://www.anansispaceworks.com



From mwm at mired.org  Thu May 12 18:33:56 2005
From: mwm at mired.org (Mike Meyer)
Date: Thu, 12 May 2005 17:33:56 -0500
Subject: bash like expansion
References: <1115923533.263490.67970@g44g2000cwa.googlegroups.com>
Message-ID: <86u0l8gjl7.fsf@guru.mired.org>

"bill" <bill.pursell at gmail.com> writes:

> Consider the following:
>
> import os, commands
> os.environ['QWE']="string with foo"
> a = '$QWE  ${QWE/foo/baz}'
> b = commands.getoutput('echo ' + a)
>
>
> This does what I want, which is to expand
> a according to the standard bash expansion rules
> (so b now references "string with foo string with baz"),
> but it doesn't feel right.
>
> Is there a more pythonic way to interpret strings according
> to shell rules for word expansion?  Relying on commands
> feels like a kludge, and shlex is way too much work for this
> (not to mention that it doesn't really address the issue).

Well, if you really want shell rules, I think you're out of
luck. Espcially since those rules tend to vary depending on what shell
you're running. I don't think that even shlex will do what you want.
If you just want the simple cases you used in your example, you might
check out the Template module in 2.4.

      <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From doodle4 at gmail.com  Thu May 26 17:44:21 2005
From: doodle4 at gmail.com (ashtonn@gmail.com)
Date: 26 May 2005 14:44:21 -0700
Subject: overflowerror!!
References: <1117143082.825320.131260@g44g2000cwa.googlegroups.com>
	<4296411a$0$24052$db0fefd9@news.zen.co.uk>
Message-ID: <1117143861.915551.316940@g49g2000cwa.googlegroups.com>

I tried that. Still get an Overflowerror: unsigned long is less than
minimum.

-Ashton



From apardon at forel.vub.ac.be  Wed May  4 06:25:20 2005
From: apardon at forel.vub.ac.be (Antoon Pardon)
Date: 4 May 2005 10:25:20 GMT
Subject: How to write this regular expression?
References: <mailman.139.1115189526.6583.python-list@python.org>
	<1115195508.025605.53690@o13g2000cwo.googlegroups.com>
	<mailman.144.1115199265.6583.python-list@python.org>
Message-ID: <slrnd7h8of.o1c.apardon@rcpc42.vub.ac.be>

Op 2005-05-04, could ildg schreef <could.net at gmail.com>:
> Does it matter whether it is a homework?

Yes, because if other do your homework for you, you wont
have learned anything from it.

> Why do you look down upon homework?

Who says he does. That he is not willing to do your homework
for you, doesn't imply he looks down on it.

> Everyone can do his homework well without any problems in your logic?

There is difference in asking for help on how to solve a
problem yourself and asking for the solution.

-- 
Antoon Pardon


From http  Sun May  8 14:50:19 2005
From: http (Paul Rubin)
Date: 08 May 2005 11:50:19 -0700
Subject: pyvm -- faster python
References: <mailman.164.1115548611.29826.python-list@python.org>
Message-ID: <7xhdhd4kno.fsf@ruckus.brouhaha.com>

Stelios Xanthakis <sxanth at ceid.upatras.gr> writes:
> - The demo is an x86/linux binary only. You shouldn't trust binaries,
>    run it in a chrooted environment not as root!

Are you going to release the source?  If not, it's a lot less interesting.


From cotyspend at yahoo.com  Fri May 27 00:17:18 2005
From: cotyspend at yahoo.com (nephish)
Date: 26 May 2005 21:17:18 -0700
Subject: dirrection for simple record keeping app.
In-Reply-To: <mailman.158.1117166295.18027.python-list@python.org>
References: <1117154519.350682.59340@z14g2000cwz.googlegroups.com>
	<mailman.158.1117166295.18027.python-list@python.org>
Message-ID: <1117167438.788380.312900@z14g2000cwz.googlegroups.com>

wow thanks,
i think i am going to check out sqlite.
acce$$ is not possible because of the cash. ick.
i am interested in learning the code anyway, but just want to learn
python instead of
javascript right now.
i have a simple cgi-script working to display info to the browser (from
apache)
but the script will not let me write the info to a text file.
if you are keen, perhaps you could help me find the error in my script?

thanks for your help by the way... still a real newbie here.



From simon.brunning at gmail.com  Wed May  4 06:36:24 2005
From: simon.brunning at gmail.com (Simon Brunning)
Date: Wed, 4 May 2005 11:36:24 +0100
Subject: py2exe and library.zip
In-Reply-To: <4278A377.3000504@open-networks.net>
References: <mailman.76.1115095357.6583.python-list@python.org>
	<5uadnUTTqv6Iw-rfRVn-qw@powergate.ca>
	<4277EF15.2030605@open-networks.net>
	<8c7f10c6050504032010d9920@mail.gmail.com>
	<4278A377.3000504@open-networks.net>
Message-ID: <8c7f10c605050403363c34f97c@mail.gmail.com>

On 5/4/05, Timothy Smith <timothy at open-networks.net> wrote:
> Simon Brunning wrote:
> >The zip file is a generated artifact. I've always found it a good rule
> >of thumb that you should keep source artifacts in your version control
> >system, not generated artifacts.
> >
> >
> >
> version control systems are used for many purposes. it's just as
> important to keep track of your packaged releases and documentation as
> it is source code.
> its also a very convenient method of keeping people up with the lastest
> version.

Well, they may be used for many things, but what they are *good* at is
what they were designed for. Use them to do a job that they *weren't*
designed for, and they don't do so well.

The zip file essentially contains the whole system in on lump. Change
the system, and naturally your users will have to download the whole
lump again. (In my 'day job', I'm a Java web app developer. We keep
the source for our systems in SVN, any 3rd party JARs, and our build
scripts. We *used* to keep the installable WAR files in there too, but
we've stopped doing that now, for this reason amongst others.)

> i know i've seen what i'm asking for before, but no one seems to be able
> to tell me.

Sorry, but I'm not aware that py2exe can do this, or has ever been
able to. Again, it's designed to build you a minimum-file-count
distributable, and that's what it's good at.

-- 
Cheers,
Simon B,
simon at brunningonline.net,
http://www.brunningonline.net/simon/blog/


From dalke at dalkescientific.com  Sun May  1 02:38:56 2005
From: dalke at dalkescientific.com (Andrew Dalke)
Date: Sun, 01 May 2005 06:38:56 GMT
Subject: pstats: negative time values
References: <426e1514$0$347$cc9e4d1f@news.dial.pipex.com>
Message-ID: <pan.2005.05.01.06.38.57.452124@dalkescientific.com>

A few days ago Tom Mortimer wrote:
> A quick question - can anyone tell me how to interpret negative time
> values in pstats.Stats.print_stats() output?

See http://docs.python.org/lib/profile-limits.html

  After the profiler is calibrated, it will be more accurate (in a least
  square sense), but it will sometimes produce negative numbers (when call
  counts are exceptionally low, and the gods of probability work against
  you :-). ) Do not be alarmed by negative numbers in the profile. They
  should only appear if you have calibrated your profiler, and the results
  are actually better than without calibration.

See also http://docs.python.org/lib/profile-calibration.html
for information on how to change the calibration number.

				Andrew
				dalke at dalkescientific.com



From gdub at ece.utexas.edu  Thu May 19 16:39:32 2005
From: gdub at ece.utexas.edu (Gary Wilson Jr)
Date: Thu, 19 May 2005 15:39:32 -0500
Subject: Convert from numbers to letters
In-Reply-To: <428CF3FF.8050403@ece.utexas.edu>
References: <1116511005.900715.107260@o13g2000cwo.googlegroups.com>	<mailman.209.1116513780.8733.python-list@python.org>	<1116528750.285895.27720@f14g2000cwb.googlegroups.com>	<mailman.223.1116529228.8733.python-list@python.org>	<1116530403.328825.216120@z14g2000cwz.googlegroups.com>	<mailman.225.1116531601.8733.python-list@python.org>	<d6iqe5$rgt$01$1@news.t-online.com>	<797fe3d405051913022e35c7c6@mail.gmail.com>
	<428CF3FF.8050403@ece.utexas.edu>
Message-ID: <428CF984.3090105@ece.utexas.edu>

Gary Wilson Jr wrote:
> alpha = 'abcdefghijklmnopqrstuvwxyz'.upper()
> pairs = [x for x in alpha] + [''.join((x,y)) for x in alpha for y in alpha]

I forget, is string concatenation with '+' just as fast as join()
now (because that would look even nicer)?


From sjmachin at lexicon.net  Wed May 25 00:54:12 2005
From: sjmachin at lexicon.net (John Machin)
Date: Wed, 25 May 2005 14:54:12 +1000
Subject: Linux Python Module using PythonC/ API
In-Reply-To: <mailman.71.1116967513.18027.python-list@python.org>
References: <loom.20050524T211343-246@post.gmane.org>	<20050524203500.GA13263@unpythonic.net>
	<mailman.71.1116967513.18027.python-list@python.org>
Message-ID: <429404f5@news.eftel.com>

David Legault wrote:
> Hi Jeff thanx for the reply
> 
> I'm a complete noob when it comes to Linux and trying to learn how to manage
> the compilation process of the same objects that work on windows.
> 
> The complete linking line is this.
> 
> ------------------
> 
> all: main
> 
> main: utm.o utmmodule.o
>     $(CC) $(CFLAGS) -shared -fPIC -Xlinker -export-dynamic -lpython2.3 -o
> utm.so
> 
> -------------------
> 
> If you could direct me into how to properly link the stuff into the .so
> file, I'd appreciate it.
> 
> I will check to see if the symbols are effectively exported to the .so file.
> 
> In windows I found it pretty easy to create the module files as dlls.
> 

Why not use distutils? I've found it very easy to use on Windows, even 
when setting up to use MinGW and the Borland bcc55 compiler. One doesn't 
need to know anything about compiler command-line arguments; one just 
tells it which compiler to use. Should be really simple on Linux.

http://www.python.org/doc/2.4.1/dist/dist.html

HTH,
John


From viruscontrol at architec.co.uk  Fri May 27 08:24:24 2005
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Date: Fri, 27 May 2005 13:24:24 +0100
Subject: VIRUS WARNING W32/Mydoom.O@mm
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From fredrik at pythonware.com  Sat May 14 03:11:36 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Sat, 14 May 2005 09:11:36 +0200
Subject: Python Polymorphism
References: <20050512200045.85674.qmail@web52604.mail.yahoo.com><mailman.498.1115931491.29826.python-list@python.org>
	<yfswtq2jtz1.fsf@black4.ex.ac.uk>
Message-ID: <d648b8$n8q$1@sea.gmane.org>

Alexander Schmolck wrote:

> > that's known as multimethods, or multiple dispatch.
>
> No -- multiple dispatch is something entirely different.

if you read the OP's entire post, you'll find that he says what he wants
to use multiple methods where "the only difference in them signture are
parameters".  if you prefer to interpret that as "number of parameters",
fine, but that's not how I read it.

(I do find this new "I'm going to nitpick on single sentences, no matter
what context they appears in" trend a bit boring, frankly.  if you think
that a statement may be misinterpreted, add a clarification or a footnote.
don't assume that you're the only one who know how things work).

</F>





From tim.golden at viacom-outdoor.co.uk  Wed May 25 04:10:23 2005
From: tim.golden at viacom-outdoor.co.uk (Tim Golden)
Date: Wed, 25 May 2005 09:10:23 +0100
Subject: py2exe for WMI
Message-ID: <9A28C052FF32734DACB0A288A3533991EBB852@vogbs009.gb.vo.local>

[Thomas Heller]
| 
| Tim Golden schrieb:
| > [Thomas Heller]
| > 
| > [... snip problems with py2exe & WMI ...]
| > 
| > | The OP of the thread Tim mentions here already had a 
| solution, if I 
| > | understood him correctly, and the other things that were 
| suggested 
| > | didn't work.  Basically, IIUC, he did add the typelib 
| > | wrappers from the 
| > | 'other' windows version manually to the library.zip file.
| > | 
| > | Totally different solutions would be:
| > | - change Tim's wmi.py module so that it works with dynamic 
| > | binding (no 
| > | typelib wrappers needed)
| > | or
| > 
| > Well, if it helps, there's a version of the WMI module
| > that uses dynamic binding on my site:
| > 
| > http://timgolden.me.uk/python/downloads/wmi-0.6a.py
| > 
| > I've hardcoded the relevant constants (which is pretty 
| > much all I was using early binding for) and replaced 
| > any other EnsureDispatch calls with simple Dispatch.
| 
| It may be dangerous since the constants may or may not be the same on 
| different versions, at least in theory.  I've appended a small module 
| which allows to bind constants from the type library at runtime.
| Not much error checking, but you may get the idea.  I'll 
| leave providing 
| a proper patch for pywin32, if it makes sense, to those that 
| have more 
| time ;-)

OK. I've uploaded a version 0.6b to my site:

http://timgolden.me.uk/python/downloads/wmi-0.6b.py

which uses Thomas' ProvideConstants class and dynamic
dispatch throughout. Testers welcome!

TJG

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From nospam at spam.fr  Sat May 28 04:36:30 2005
From: nospam at spam.fr (nico)
Date: Sat, 28 May 2005 10:36:30 +0200
Subject: lambda a plusieurs arguments
References: <42975b1a$0$26423$626a14ce@news.free.fr>
	<1117220286.210721.209080@g44g2000cwa.googlegroups.com>
Message-ID: <42982d8e$0$26456$626a14ce@news.free.fr>

Bonjour,

> python at aful.org seems to be a good place to post
> questions related to Python if you intend to use
> french.
> 
> -> http://www.aful.org/wws/arc/python/
> 
> ((
>     des questions r?dig?es en fran?ais sont plus
>     ? leur place sur des liste de diffusions
>     nationales ...
> ))

D?sol?, je me suis tromp? de groupe en postant... :(

-- 
nico


From piet at cs.uu.nl  Fri May 27 05:15:32 2005
From: piet at cs.uu.nl (Piet van Oostrum)
Date: Fri, 27 May 2005 11:15:32 +0200
Subject: What are OOP's Jargons and Complexities?
References: <1116843761.619249.144790@g47g2000cwa.googlegroups.com>
	<bAske.14563$yx.14338@fe08.lga>
	<3584469.Aerji1NdQr@yahoo.com> <3cWdnbtAM6aZ6g_fRVn-2w@rcn.net>
	<878y24yhst.fsf@ivanova.rotty.yi.org> <3fh93fF7set5U1@news.dfncis.de>
	<9tKdnT-wKq24Uw7fRVn-pA@rcn.net>
	<7vWke.2017$W51.14781@typhoon.sonic.net>
	<1117158478.701216.130110@f14g2000cwb.googlegroups.com>
Message-ID: <wz4qcpav2j.fsf@ordesa.cs.uu.nl>

>>>>> "Xah Lee" <xah at xahlee.org> (XL) wrote:

>XL> Joe: lang x is strongly typed
>XL> Dave: you mean statically typed?
>XL> John: no no, that's weakly typed.

That should have been `weekly typed', according to the link below.
Maybe there is also `daily typed' or `monthly typed'?

>XL> http://xahlee.org/UnixResource_dir/writ/jargons.html

-- 
Piet van Oostrum <piet at cs.uu.nl>
URL: http://www.cs.uu.nl/~piet [PGP]
Private email: piet at vanoostrum.org


From mwm at mired.org  Thu May 19 05:11:03 2005
From: mwm at mired.org (Mike Meyer)
Date: Thu, 19 May 2005 04:11:03 -0500
Subject: datetime
References: <47736$428c56e3$9117fe9b$26924@news2.tudelft.nl>
Message-ID: <86wtpv1syg.fsf@guru.mired.org>

Nader Emami <emami at knmi.nl> writes:

> L.S.,
>
> It is very simple question: Why doesn't work the next statments?
>
> import datetime
>
> today = datetime.date.today()
>
> and I get the next error:
>
> today = datetime.date.today()
> Traceback (most recent call last):
>    File "<stdin>", line 1, in ?
> AttributeError: time
>
> I can't understand it!

It works fine here (Python 2.4.1 on FreeBSD 5-STABLE). Possibly you
have a corrupt file?

     <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From jdc at uwo.ca  Mon May  2 23:23:52 2005
From: jdc at uwo.ca (Dan Christensen)
Date: Mon, 02 May 2005 23:23:52 -0400
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <8764y29x3m.fsf@uwo.ca>
References: <d4u60o$akh$1@news2.netvision.net.il>
	<mailman.47.1114818531.14961.python-list@python.org>
	<1114924100.296223.114020@g14g2000cwa.googlegroups.com>
	<1114927892.321086.60190@z14g2000cwz.googlegroups.com>
	<zX%ce.78213$ft1.5056576@phobos.telenet-ops.be>
	<Zj2de.78345$a42.5091422@phobos.telenet-ops.be> <8764y29x3m.fsf@uwo.ca>
Message-ID: <877jihc7qv.fsf@uwo.ca>

Dan Christensen <jdc at uwo.ca> writes:

> Roel Schroeven <rschroev_nospam_ml at fastmail.fm> writes:
>
>> There's no level 12 yet though.
>
> Now there's a 12 and a 13 (at least!).

Any hints for level 13?  I know how to make a call, but don't know "who"
to call.

Dan


From anonymousnerd at gmail.com  Sat May 14 07:12:21 2005
From: anonymousnerd at gmail.com (anonymousnerd at gmail.com)
Date: 14 May 2005 04:12:21 -0700
Subject: Returning Date As String ?
In-Reply-To: <pan.2005.05.14.11.05.47.499875@optushome.com.au>
References: <pan.2005.05.14.11.05.47.499875@optushome.com.au>
Message-ID: <1116069141.262817.153200@g49g2000cwa.googlegroups.com>

if you're using date.today():
x=date.today()



From exarkun at divmod.com  Wed May 11 08:29:33 2005
From: exarkun at divmod.com (Jp Calderone)
Date: Wed, 11 May 2005 12:29:33 GMT
Subject: Replacing open builtin
In-Reply-To: <1115814028.259365.98710@g49g2000cwa.googlegroups.com>
Message-ID: <20050511122933.15422.1713186920.divmod.quotient.32247@ohm>

On 11 May 2005 05:20:28 -0700, rmm at iname.com wrote:
>If I replace the open builtin eg
>
>import main
>__main__.__builtins__.open=None
>
>Is there any way, from here on, to access the original open function??
>
>Extending this slightly, lets say I put a reference to the original
>open function inside a class called Isolate and protect this reference
>using __getattribute__ and __setattr__.  Is the original function now
>isolated and only able to be referenced within Isolate.
>
>In summary, are there any references to builtin functions others than
>through __builtins__ and is __getattribute__, __setattr__ secure

  Only about a zillion.  For example:

    >>> type(sys.stdout)('/dev/null')
    <open file '/dev/null', mode 'r' at 0xb7df53c8>

  Jp


From magicmas at spymac.com  Fri May 20 10:28:49 2005
From: magicmas at spymac.com (cheng)
Date: 20 May 2005 07:28:49 -0700
Subject: a re problem
In-Reply-To: <1116597929.339491.54870@g49g2000cwa.googlegroups.com>
References: <1116597929.339491.54870@g49g2000cwa.googlegroups.com>
Message-ID: <1116599328.981682.12890@g47g2000cwa.googlegroups.com>

thx for help :)



From tdelaney at avaya.com  Wed May 18 19:08:17 2005
From: tdelaney at avaya.com (Delaney, Timothy C (Timothy))
Date: Thu, 19 May 2005 09:08:17 +1000
Subject: speeding up Python script
Message-ID: <338366A6D2E2CA4C9DAEAE652E12A1DE02520531@au3010avexu1.global.avaya.com>

James Carroll wrote:

> It looks like your algorithm really does iterate over all values for
> six variables and do lots of math.. then you can't do any better than
> implementing the inner loop in C.

Or Pyrex ...
http://www.cosc.canterbury.ac.nz/~greg/python/Pyrex/

For this type of situation, Pyrex is pretty much perfect. You can write
your algorithm in Python, get it right, then optimise it with static
typing, C variables, etc as required. You don't even need to change your
test suite because you build a Python extension module.

Tim Delaney


From doodle4 at gmail.com  Mon May 16 17:41:58 2005
From: doodle4 at gmail.com (ashtonn@gmail.com)
Date: 16 May 2005 14:41:58 -0700
Subject: optparse global
References: <1116264761.204065.15980@g14g2000cwa.googlegroups.com>
	<mailman.52.1116265519.8733.python-list@python.org>
	<1116273397.597407.256760@g49g2000cwa.googlegroups.com>
	<mailman.61.1116274575.8733.python-list@python.org>
Message-ID: <1116279718.395023.42630@g14g2000cwa.googlegroups.com>

Thanks. It works.
-Ashton



From sebastien.ramage at gmail.com  Wed May 25 03:11:17 2005
From: sebastien.ramage at gmail.com (=?iso-8859-1?q?S=E9bastien_Ramage?=)
Date: 25 May 2005 00:11:17 -0700
Subject: embedded Python
Message-ID: <1117005077.657701.226750@z14g2000cwz.googlegroups.com>

bonjour,

apr?s bien du mal j'ai r?ussi ? cr?er une dll pour 4e Dimension

maintenant j'aurai voulu int?gr? Python ? cette dll
j'ai voulu faire simple pour le moment en utilisant l'exemple donn?
dans la doc

exemple :
#include <Python.h>

int
main(int argc, char *argv[])
{
  Py_Initialize();
  PyRun_SimpleString("from time import time,ctime\n"
                     "print 'Today is',ctime(time())\n");
  Py_Finalize();
  return 0;

}

mais au moment du linkage j'obtient les erreurs suivantes :
Package.obj : error LNK2001: unresolved external symbol
__imp__Py_Finalize at 0
Package.obj : error LNK2001: unresolved external symbol
__imp__PyRun_SimpleString at 4
Package.obj : error LNK2001: unresolved external symbol
__imp__Py_Initialize at 0

Pourtant l'exemple fonctionne, j'ai essay?.
quel diff?rence alors avec ma dll ?

comment utilis? Python sous forme d'une dll ?



From michele.simionato at gmail.com  Wed May 18 00:08:00 2005
From: michele.simionato at gmail.com (Michele Simionato)
Date: 17 May 2005 21:08:00 -0700
Subject: Quick Reference from module doc strings.
In-Reply-To: <428a729a@nntp0.pdx.net>
References: <mailman.65.1116085574.29328.python-list@python.org>
	<1116199904.205240.58300@g49g2000cwa.googlegroups.com>
	<mailman.15.1116204313.8733.python-list@python.org>
	<42880d98$1@nntp0.pdx.net>
	<mailman.27.1116217027.8733.python-list@python.org>
	<4288c71e@nntp0.pdx.net>
	<mailman.66.1116284785.8733.python-list@python.org>
	<428a729a@nntp0.pdx.net>
Message-ID: <1116389280.575717.265680@f14g2000cwb.googlegroups.com>

These days I use generators instead of StringIO, i.e.
instead of

print >> out, mystring

I just write

yield mystring

and then I "".join the generator.

               Michele Simionato



From joe at inwap.com  Tue May 24 06:26:09 2005
From: joe at inwap.com (Joe Smith)
Date: Tue, 24 May 2005 03:26:09 -0700
Subject: What are OOP's Jargons and Complexities?
In-Reply-To: <1116843761.619249.144790@g47g2000cwa.googlegroups.com>
References: <1116843761.619249.144790@g47g2000cwa.googlegroups.com>
Message-ID: <SbadnXUlS67anA7fRVn-jw@comcast.com>

Xah Lee wrote:

> The Rise of Classes, Methods, Objects

1) Most of the information you posted was incomplete and much of
    it is just plain wrong.

2) What you posted was not perl related.

Are you deliberately trying to make yourself a laughingstock?


From tim.tadh at gmail.com  Mon May  2 20:50:01 2005
From: tim.tadh at gmail.com (Tim Henderson)
Date: 2 May 2005 17:50:01 -0700
Subject: Inspect Python Classes for instance data information
Message-ID: <1115081401.464719.142070@o13g2000cwo.googlegroups.com>

Hello

I want to creat a program that can inspect a set of classes that i have
made and spit out a savable version of these classes. To do this I need
to be able to inspect each class and get all of its instance data as
well as information about a particular meathod. This is what i want it
to do:


class song:
    def __init__(self, name, artist, album, published):
        self.name = name
        self.artist = artist
        self.album = album
        self.published = published
    def build(self, name, artist, album, published):
        self.name = name
        self.artist = artist
        self.album = album
        self.published = published

#now what i want to do with this dummy class
s = song("12:51", "The Strokes", "Room on Fire", 2005)
print getTextVersion(s)

<class>
    <name>song</name>
    <data>
        <attribute>
            <date_type>string</data_type>
            <value>12:51</value>
            <attribute_name>name</attribute_name>
        </attribute>
        <attribute>
            <date_type>string</data_type>
            <value>The Strokes</value>
            <attribute_name>artist</attribute_name>
        </attribute>
        <attribute>
            <date_type>string</data_type>
            <value>Room on Fire</value>
            <attribute_name>album</attribute_name>
        </attribute>
        <attribute>
            <date_type>int</data_type>
            <value>2005</value>
            <attribute_name>published</attribute_name>
        </attribute>
    </data>
    <build_parameter_order>name artist album
published</build_parameter_order>
</class>


I have no idea how to do the inspection part of this little problem. I
could just have each class define its own meathod to convert to this
format, but that would be a lot of work when i could just make one
class that solves the problem for all classes. Is there a way to do
this?

cheers
---
Tim Henderson
mail me: tim.tadh at gmail.com



From MLists at romulo.de  Mon May 16 14:08:44 2005
From: MLists at romulo.de (Rainer Mansfeld)
Date: Mon, 16 May 2005 20:08:44 +0200
Subject: CGI on Windows
Message-ID: <4288E1AC.2030609@romulo.de>

Hi all,

I'm running the following script as a minimalistic CGI server on
Windows ME:

   httpd.py
   --------
   from BaseHTTPServer import HTTPServer
   from CGIHTTPServer import CGIHTTPRequestHandler

   server = HTTPServer(("", 8080), CGIHTTPRequestHandler)
   server.serve_forever()

This works fine showing html files and even running python scripts.
However if I try something like
http://localhost:8080/cgi-bin/Test.py?key=123
using the following script:

   Test.py
   -------
   import cgi

   form = cgi.FieldStorage()
   value = form.getfirst('key', "???")

   print "Content-Type: text/html"
   print
   print "value = %s" % value

it shows 'value = ???' in the browswer.
In other words cgi.FieldStorage is empty.
Using a form and the 'POST' method doesn't help either.

On a 'real' Internet server (Linux/Apache) the same script works
without problems. So my conclusion is, that either the CGIHTTPServer
or the cgi module don't work on Windows, but I can't find anything
about this issue in the documentation or using Google.
Any hints?

Thanks in advance

    Rainer






From gandalf at geochemsource.com  Wed May 18 09:57:20 2005
From: gandalf at geochemsource.com (Laszlo Zsolt Nagy)
Date: Wed, 18 May 2005 15:57:20 +0200
Subject: super() and automatic method combination
In-Reply-To: <Xns965A94007A1BBduncanbooth@127.0.0.1>
References: <7xvf5gra9z.fsf_-_@ruckus.brouhaha.com>
	<Xns965A94007A1BBduncanbooth@127.0.0.1>
Message-ID: <428B49C0.2000508@geochemsource.com>


>The trick is that C.f only calls A.f, but A.f needs to end up calling B.f 
>when it is used in a C.
>  
>
I believe your response only applies to single inheritance. For classes 
with muliple bases classes, you need to call the base methods one by one.

BTW I prefer to call the base methods in this form:

class AB(A,B):
    def f(self):
       A.f(self)
       B.f(self)

This arises the question: is there a difference between these:

super(A,self).f()  # I do not use to use this....
A.f(self)

-- 
_________________________________________________________________
  Laszlo Nagy		      web: http://designasign.biz
  IT Consultant		      mail: gandalf at geochemsource.com

     		Python forever!




From eurleif at ecritters.biz  Wed May  4 09:45:00 2005
From: eurleif at ecritters.biz (Leif K-Brooks)
Date: Wed, 04 May 2005 13:45:00 GMT
Subject: empty lists vs empty generators
In-Reply-To: <pan.2005.05.03.01.32.03.187701@jerf.org>
References: <509534af.0505021514.5e49aa2@posting.google.com>
	<pan.2005.05.03.01.32.03.187701@jerf.org>
Message-ID: <wl4ee.2865$Cz3.445354@monger.newsread.com>

Jeremy Bowers wrote:
>     def __init__(self, generator):
>         self.generator = generator

You'll want to use iter(generator) there in order to handle reiterables.


From cam.ac.uk at mh391.invalid  Sun May  1 05:05:23 2005
From: cam.ac.uk at mh391.invalid (Michael Hoffman)
Date: Sun, 01 May 2005 10:05:23 +0100
Subject: Best way to parse file into db-type layout?
In-Reply-To: <dl48715f2aciv9ngt1flnggc82v0uubnjo@4ax.com>
References: <cis2715rq97gb4taalf81ab33qmif2r4qr@4ax.com>
	<d4s01i$fbh$1@gemini.csx.cam.ac.uk>
	<7v1371pn9gvsh52m7nld6ddjm9b9k3elgf@4ax.com>
	<d4uc1r$nfs$1@gemini.csx.cam.ac.uk>
	<v2e571d3tjkg25n2k2vbbej3hfnku0a6kv@4ax.com>
	<d4ugm6$3r2$1@gemini.csx.cam.ac.uk>
	<a0j571d3qkd1csavlcdp9t4rhl6hv15sc5@4ax.com>
	<d4vn0s$i3b$1@gemini.csx.cam.ac.uk>
	<fnp6711cu6m6d7uitbdqsb9jh0bloql1ep@4ax.com>
	<d501b0$9af$1@gemini.csx.cam.ac.uk>
	<dl48715f2aciv9ngt1flnggc82v0uubnjo@4ax.com>
Message-ID: <d5264n$p3l$1@gemini.csx.cam.ac.uk>

John Machin wrote:
 >[Michael Hoffman]:
>>What if the input is UTF-16? Your solution won't work for that. And there
>>are certainly UTF-16 CSV files out in the wild.
> 
> The csv module docs do say that Unicode is not supported.
> 
> This does appear to work, however, at least for data that could in
> fact be encoded as ASCII:

And for data that can't be expressed as ASCII? It doesn't work.

So throw out csv, just like fileinput. After all, despite its utility, 
and the fact that you obviously suspect the OP will never have to deal 
with UTF-16 (otherwise you would have suggested this without prompting), 
it won't work for *every* conceivable case.

> The usual trick to smuggle righteous data past the heathen (recode as
> UTF-8, cross the border, decode) should work.

True, but that's a lot of trouble to go to for something that you expect 
will never happen, and for a script that may only be run by the 
programmer who can certainly deal with the exceptions when they happen.

The range of sensible input is something to be determined by a 
specification, or the programmer if no spec exists. Not by kibitzers[1] 
speaking on high from c.l.p. <wink>
-- 
Michael Hoffman

[1] Yes, I include myself in that category.


From phillip.watts at anvilcom.com  Tue May 10 13:21:39 2005
From: phillip.watts at anvilcom.com (phil)
Date: Tue, 10 May 2005 12:21:39 -0500
Subject: Destructor Woes, was Advice needed on __del__
References: <d5o1s1$8h3$1@sea.gmane.org>	<d5obmp$cqh$1@sea.gmane.org>	<427FBAD4.3070004@anvilcom.com>	<d5ogv2$2k9$1@sea.gmane.org>	<42800279.3B26FFF3@pauahtun.org>	<mailman.244.1115687630.29826.python-list@python.org>
	<DS1ge.87015$Tk7.5147767@phobos.telenet-ops.be>
Message-ID: <4280EDA3.1090104@anvilcom.com>


> Then i got a tip that you can register a function that needs to be 
> called when the object is going to be deleted.
> For instance to register a function __exit, you do this:
> 


Here is the complete line class with your suggestion:

Below is the output.

Nice idea, maybe I did something wrong?

class line:
	def __init__(s,glob,argl,color=''):
	    atexit.register(s.__exit)
	    s.glob = glob
	    s.type = 'line'
	    s.color = color
	    if not s.color: s.color = glob.color
	    if len(argl) == 2:
	        wobj = glob.objs[ argl[0] ][0]
	        s.x0 = a0 = wobj.x
	        s.y0 = b0 = wobj.y
	        wobj = glob.objs[ argl[1] ][0]
	        s.x1 = a1 = wobj.x
	        s.y1 = b1 = wobj.y

	    elif len(argl) == 4:
	        s.x0 = a0 = float( argl[0] )
	        s.y0 = b0 = float( argl[1] )
	        s.x1 = a1 = float( argl[2] )
	        s.y1 = b1 = float( argl[3] )
	    else: return
	    s.midx = (s.x0 + s.x1) / 2
	    s.midy = (s.y0 + s.y1) / 2
	    s.len = sqrt( (s.x1 -s.x0)**2  + (s.y1 -s.y0)**2 )
	    if  (s.y1 -s.y0) == 0: s.slope = 0
	    elif  (s.x1 -s.x0) == 0: s.slope = 999999
	    else: s.slope = (  (s.y1 -s.y0) / (s.x1 -s.x0) )

	    # center point of graph is 400,300
	    # scale is no of pixels per unit of measure
             x0 = a0  * s.glob.scale + 400
             y0 = 300 - b0  * s.glob.scale
             x1 = a1  * s.glob.scale + 400
             y1 = 300 - b1 * s.glob.scale
	    s.obj = glob.can.create_line(x0,y0,x1,y1,
					width=glob.width,fill=s.color)
	def __exit(s):
	    print 'exit'
	    s.glob.can.delete(s.obj)

	# def __del__(s):
	#     s.glob.can.delete(s.obj)


exit

Error in sys.exitfunc:
Traceback (most recent call last):
   File "/usr/local/lib/python2.3/atexit.py", line 20, in _run_exitfuncs
     func(*targs, **kargs)
   File "./graph.py", line 972, in __exit
     s.glob.can.delete(s.obj)
   File "/usr/local/lib/python2.3/lib-tk/Tkinter.py", line 2085, in delete
     self.tk.call((self._w, 'delete') + args)
_tkinter.TclError: invalid command name ".1076354284"



From w.ruijter at alumnus.utwente.nl  Wed May 18 19:39:04 2005
From: w.ruijter at alumnus.utwente.nl (wout)
Date: Thu, 19 May 2005 00:39:04 +0100
Subject: Help on slow attribute copy
In-Reply-To: <1116457391.943711.304790@g44g2000cwa.googlegroups.com>
References: <mailman.171.1116453597.8733.python-list@python.org>
	<1116457391.943711.304790@g44g2000cwa.googlegroups.com>
Message-ID: <428BD218.7040601@alumnus.utwente.nl>

bgs wrote:

>There's no way that loop takes fifteen minutes just because of the dot
>operator.  I mean, 200000 dots in 15 minutes is 200 dots/second.  On a
>1 GHz machine, that would be 5 million cycles per dot.   That does not
>seem reasonable (assuming you haven't overridden the dot operator to do
>something more complicated than normal).
>
>Check that i.label does not have __hash__ overridden in a bad way.  I
>tried a test case with __hash__ overridden to always return the same
>integer, and I got performance about what you are describing when I
>tried your example loop with 100000 iterations.
>
>And, of course, make sure you are not low on memory and relying too
>heavily on swap space.
>
>  
>
bgs,
thanks for the quick reply
I don't think it's due to the .label, maybe too, but when I take it out 
it is still slow (due to the .coordinate)
here's the abaqus stuff:
 >>> print mdb.model['Model-1'].rootAssembly.instance['blok'].nodes[1]
({'coordinate': (3.01000022888184, 5.01000022888184, 0.53123539686203), 
'coordinates': (3.01000022888184, 5.01000022888184, 0.53123539686203), 
'instanceName': 'blok', 'label': 2})
 >>> nodes = mdb.model['Model-1'].rootAssembly.instance['blok'].node
 >>> for i in nodes:
...       dummy = i.coordinate
wait for half an hour....
The machine is p4 with 1GB ram so should be ok,
running fedora 3

Thanks
Wout

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From hemanthps at gmail.com  Tue May  3 04:25:39 2005
From: hemanthps at gmail.com (hemanth)
Date: 3 May 2005 01:25:39 -0700
Subject: BitKeeper for Python?
References: <IOade.1185051$Xk.343206@pd7tw3no>
Message-ID: <1115108739.802692.87920@g14g2000cwa.googlegroups.com>

John Smith wrote:
> I am going to be working with some people on a project that is going
to be
> done over the internet. I am looking for a good method of keeping
everyone's
> code up to date and have everyone be able to access all the code
including
> all the changes and be able to determine what parts of the code were
> changed.
>
> If it were opensource that would be even better.

Or you can even try Darcs. <http://www.darcs.net/DarcsWiki>



From wolfgang.keller.nospam at gmx.de  Mon May  2 13:30:06 2005
From: wolfgang.keller.nospam at gmx.de (Wolfgang Keller)
Date: 2 May 2005 17:30:06 GMT
Subject: Bhavaya-like ORM for Python?
Message-ID: <xn0e1s3gwnrq5p000wolfgangkellernospamgmxde@news.individual.de>

Hello,

does anyone know of a Python ORM module that works like Bhavaya does
for J***? In case Bhavaya isn't known, an introduction can be found at:
http://bhavaya.openadaptor.org/intro.html.

TIA,

Best regards

Wolfgang Keller


From rupole at hotmail.com  Sat May 21 15:01:19 2005
From: rupole at hotmail.com (Roger Upole)
Date: Sat, 21 May 2005 15:01:19 -0400
Subject: How to receive events (eg. user mouse clicks) from IE
References: <1116476411.853695.235670@g14g2000cwa.googlegroups.com>
	<428c3cbe$1_1@spool9-west.superfeed.net>
	<1116529345.146032.91880@f14g2000cwb.googlegroups.com>
	<428cf5a9$1_1@spool9-west.superfeed.net>
	<1116537405.495521.252570@f14g2000cwb.googlegroups.com>
	<428f5882$1_2@spool9-west.superfeed.net>
	<jDKje.7423$wr.4173@clgrps12>
Message-ID: <428f8660$1_1@spool9-west.superfeed.net>

Reducing the sleep time in the loop also seems to speed things up.
I'm guessing due to giving both event loops more resources, but
I can't prove it conclusively.

This might make a good candidate for the Cookbook (or there's
a collection of IE automation examples at win32com.de)
so anybody else trying to do something similar knows some of the pitfalls.

       Roger

"J Correia" <correiajREMOVECAPS at hotmail.com> wrote in message 
news:jDKje.7423$wr.4173 at clgrps12...
> "Roger Upole" <rupole at hotmail.com> wrote in message
> news:428f5882$1_2 at spool9-west.superfeed.net...
>> There does appear to be some sort of conflict between the two event
>> hooks.  I wasn't seeing it before since IE was getting google from my
>> browser cache and it was coming up almost instantaneously.  As soon
>> as I switched the URL to a page that loads slowly, I got the same
>> result.
>>
>>    Adding win32gui.PumpWaitingMessages() to the wait loop
>> seems to allow both event hooks to run without blocking each other.
>>
>>      Roger
>
> I added that line to the wait loop and while it does indeed speed it
> up dramatically (in 10 tests: min = 13 sec; max = 33, ave ~ 20 secs)
> it's still nowhere near the 1-2 secs it takes without hooking the
> IE events.  I also can't explain the wide differences between min
> and max times since they seem to occur randomly
> (e.g. min occurred on 7th run, max on 4th).
>
> I assume that that response time won't be adequate for the original
> poster's needs, due to the slowdown in browsing for his users.
>
> Jose
>
>
>
>
> 




----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==----
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From mwm at mired.org  Thu May 19 05:07:16 2005
From: mwm at mired.org (Mike Meyer)
Date: Thu, 19 May 2005 04:07:16 -0500
Subject: How to learn OO of python?
References: <mailman.130.1116402087.8733.python-list@python.org>
	<8764xg69nr.fsf@hector.domek>
	<1116417670.977767.235690@g14g2000cwa.googlegroups.com>
Message-ID: <861x8337p7.fsf@guru.mired.org>

"Harlin Seritt" <harlinseritt at yahoo.com> writes:
> I think I know what you mean. When I first started trying to learn the
> OOP aspect of Python I thought it was strange since I had started with
> OOP on Java and C++. Nonetheless, once you get the hang of it, OOP will
> make way more sense than all of the complications of Java and C++ class
> implementations. Let me give you a quick example of what I'm talking
> about:

Um, there are some problems with your commentary.

> class Animal:
>    def eats(self):
>       print 'The animal eats.'
>    def walks(self):
>       print 'The animal walks.'
>
> """Here the class Dog instantiates the class Animal. 'Dog' will 'do'
> whatever 'Animal' does plus some other things which we will describe in
> this class code."""
> class Dog(Animal):
>    """#the self keyword means that this function will be a class
> function"""
>    def communicate(self):
>       print 'The dog barks.'

First, the correct terminology is class *method*. Yes, it looks like a
function definition, but it's a class method.  Second, "self" isn't a
keyword. It's just a name. You can name any variable self. The first
argument to all class methods is a reference to the instance of the
class that is invoking the method. It can have any name you want, but
by convention in Python is called "self". Consider the following:

py> class C:
...  def say(my, message):
...   print message
... 
py> self = C()
py> self.say("hello")
hello
py> 

Finally, *every* def inside a class statement creates a class
method. You don't really need to worry about this, but will see it on
the group. The method can be wrapped, and the defined name rebound to
the wrapper, either via the decorator syntax or directly, using the
classmethod and staticmethod functions.

>    """# __init__ function defines what # #will happen as soon as this
> class is instantiated. Also, the overloaded variable designators (color
> = None, fur = None) allow the instantiator to optionally define these
> variables when called from elsewhere."""
>
>    def __init__(self, color=None, fur=None):
>       """# this time self will designate the variable 'color' # as a
> class variable."""
>       self.color = color
>       self.fur = fur

These aren't variable designators, and they aern't overloaded. They
are parementers, and they are given default values. This means they
can be omitted from an invocation of the method, in which case the
default values will be used.

> if __name__ == '__main__':
>    sparky = Dog(color="White", fur="Short")
>    sparky.communicate()
>    print sparky.color
>    print sparky.fur
>    print sparky.eats()   # Here sparky will access 'Animal' methods
> that 'Dog' inherited.
>    print sparky.walks()  # Another method originating from the 'Animal'
> class.
>
> What happens if you don't use 'self' inside your class code? You won't
> be able to access it within the class outside of the method where you
> initialized it. For instance, if you don't designate color with self
> then you can only use the 'color' variable within the __init__()
> method. This is useful whenever you want to use 'color' as a private
> variable.

I'm not sure where to start here.

"self" is a variable name. By convention, it's use is reserved for the
first argument of methods, in which case it is passed the instance
that is invoking the method.

By assigning something to "self.feature", you are assigning a value to
an attribute - "feature" of this instance. This means it'll persist
beyond the function existing.

Assuming you have access to another object - let's call it foo - you
can assign values to it's attributes in the same way, by assigning to
"foo.feature". Once made, such an assignment will persist until it's
either changed, or the object foo ceases to exist.

If you assign to a bare variable name - i.e., one with no dot - it
will by default be local to that function. This means the variable
will cease to exist when the function exits. Some details you should
keep in mind, but can genarlly ignore: When the variable ceases to
exist, the object it reference will lose a reference, which may or may
not cause that object to cease to exist. You can cause an assignment
to refer to a variable in the enclosing modules global name space with
the "global" statement. Finally, if you referene a varaible rather
than assigning to it, it's searched for in the enclosing scopes, out
to the module global namespace.

> The same also goes for methods. Hopefully, you see how useful this can
> be down the road. This way you won't have to use variable/method access
> modifiers like Public, Private, Protected and so forth. If this doesn't
> make sense or you want more clarity, please let me know.

Generally, methods are referred to by referring to a feature of an
instance of an object. The first argument to the method is left off
such an invocation, as the instance the method reference is attached
to will be passed as that parameter. This is the way "self.method"
works - it's a reference to a method of the instance that was used to
invoke the currently executing method. Sometimes, you'll see
invocations of methods from the class, in which case an instance has
to be passed as the first parameter. The only time you're liable to
have to worry about this as you get started is in calling a precursor
to a method, like so:

class A:
   def meth(self):
       ...

class B(A):
   def meth(self):
      A.meth(self)
      ...

This is depreciated. You should be using new-style classes and the
super function instead:

class A(object):
   def meth(self):
      ...

class B(A):
   def meth(self):
      super(B, self).meth()

All features of classes/objects are public. The philosphy is that
"we're all adults here". If you want to indicate that some feature is
an internal implementation detail, and shouldn't be used by client
classes, start it's name with an "_". If you're really desperate, use
a double underscore. Python will mangle "__name" to
"_<classname>__name", making it slightly more painfull to use.  This
just makes them hard to use, though, doesn't really hide them. But it
does this for classes that inherit from the class as well as clients
of the class.

   <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From gsakkis at rutgers.edu  Wed May  4 05:00:29 2005
From: gsakkis at rutgers.edu (George Sakkis)
Date: 4 May 2005 02:00:29 -0700
Subject: PHPParser pod Zope
References: <yttaxdmad3aa$.1cemtbg8lyvba.dlg@40tude.net>
	<4277d8ea$0$18802$636a15ce@news.free.fr>
	<1115181234.612599.83930@g14g2000cwa.googlegroups.com>
	<mailman.142.1115193359.6583.python-list@python.org>
	<42788954$0$316$636a15ce@news.free.fr>
Message-ID: <1115197229.464598.31700@g14g2000cwa.googlegroups.com>

"bruno modulix" <onurb at xiludom.gro> wrote:

> Josef Meile wrote:
> (snip)
> >
> > I don't find this two replies funy :-(. I think it is impolite to
make
> > fun of the OP.
>
> My intent was not to make fun *of* the OP. Now I'm willing to admit
that
> my answer may not be as (kindly) funny as intended, and so I hope the
OP
> has a better sens of humor than you and me !-)
>

<joking>or perhaps the OP's sense of humor is irrelevant if he/she
cannot read this thread in english :-) </joking> 

George



From richie at entrian.com  Mon May  9 06:47:24 2005
From: richie at entrian.com (Richie Hindle)
Date: Mon, 09 May 2005 11:47:24 +0100
Subject: Strip white spaces from source
In-Reply-To: <1115590492.587606.108810@z14g2000cwz.googlegroups.com>
References: <1115590492.587606.108810@z14g2000cwz.googlegroups.com>
Message-ID: <7ifu715jb8q0ob789g7b4odqc6rcmeog10@4ax.com>


[qwweeeit]
> I need to limit as much as possible the lenght of a source line,
> stripping white spaces (except indentation).
> For example:
> .   .   max_move and AC_RowStack.acceptsCards ( self, from_stack, cards
> )
> must be reduced to:
> .   .   max_move and AC_RowStack.acceptsCards(self,from_stack,cards)

Here's a script that does some of what you want (stripping whitespace within
the three types of brackets).  It was written to make code more compliant with
the Python style guide.

------------------------------- unspace.py -------------------------------

"""Strips spaces from inside brackets in Python source code, turning
( this ) into (this) and [ 1, ( 2, 3 ) ] into [1, (2, 3)].  This makes
the code more compliant with the Python style guide.  Usage:

  unspace.py filename

Output goes to stdout.

This file is deliberately written with lots of spaces within brackets,
so you can use it as test input.
"""

import sys, re, token, tokenize

OPEN = [ '(', '[', '{' ]
CLOSE = [ ')', ']', '}' ]

class UnSpace:
    """Holds the state of the process; onToken is a tokenize.tokenize
    callback.
    """
    def __init__( self ):
        self.line = None     # The text of the current line.
        self.number = -1     # The line number of the current line.
        self.deleted = 0     # How many spaces have been deleted from 'line'.

        self.last_srow = 0
        self.last_scol = 0
        self.last_erow = 0
        self.last_ecol = 0
        self.last_line = ''

    def onToken( self, type, tok, ( srow, scol ), ( erow, ecol ), line ):
        """tokenize.tokenize callback."""
        # Print trailing backslashes plus the indent for new lines.
        if self.last_erow != srow:
            match = re.search( r'(\s+\\\n)$', self.last_line )
            if match:
                sys.stdout.write( match.group( 1 ) )
            sys.stdout.write( line[ :scol ] )

        # Print intertoken whitespace except the stuff to strip.
        if self.last_srow == srow and \
           not ( self.last_type == token.OP and self.last_tok in OPEN ) and \
           not ( type == token.OP and tok in CLOSE ):
            sys.stdout.write( line[ self.last_ecol:scol ] )

        # Print the token itself.
        sys.stdout.write( tok )

        # Remember the properties of this token.
        self.last_srow, self.last_scol = ( srow, scol )
        self.last_erow, self.last_ecol = ( erow, ecol )
        self.last_type, self.last_tok = type, tok
        self.last_line = line

    def flush( self ):
        if self.line is not None:
            sys.stdout.write( self.line )


if __name__ == '__main__':
    if len( sys.argv ) != 2:
        print __doc__
    else:
        file = open( sys.argv[ 1 ], 'rt' )
        unSpace = UnSpace()
        tokenize.tokenize( file.readline, unSpace.onToken )
        unSpace.flush()

-- 
Richie Hindle
richie at entrian.com



From fredrik at pythonware.com  Thu May 12 13:52:01 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 12 May 2005 19:52:01 +0200
Subject: Launch file in Notepad
References: <42835db6$0$1334$5fc3050@dreader2.news.tiscali.nl>
	<42836024.1040102@po-box.mcgill.ca>
Message-ID: <d604lf$6vb$1@sea.gmane.org>

Brian van den Broek wrote:

> > I'm trying to lauch Notepad from Python to open a textfile:
> >
> > import os
> > b1="c:\test.txt"
> > os.system('notepad.exe ' + b1)
> >
> > However, the t of test is escaped by the \, resulting in Notepad trying
> > to open "c: est.txt".
> >
> > How do I solve this?
>
> There are several ways, but the preferred solution is to switch the
> slash direction: "c:/test.txt". Python's smart enough to notice its
> running on Windows and do the right thing with the slash.

that's slightly misleading: on the API level, most functions can handle
both kinds of slashes.  functions like open(), os.remove(), shutil.copy()
etc. handles either case just fine.  and in most cases, this is handled
on the Win API level (or in the C library), not by Python.

however, in this case, the user passes a string to os.system().  that
string is passed *as is* to the command shell (which, in this case,
passes it on to notepad.exe as is).

</F>





From Oyvind.Ostlund at cern.ch  Wed May 11 06:35:34 2005
From: Oyvind.Ostlund at cern.ch (Oyvind Ostlund)
Date: Wed, 11 May 2005 12:35:34 +0200
Subject: Reading files into a 2D list.
Message-ID: <9D1BA87B48D4F440A0D9E371471F45A5112C55@cernxchg21.cern.ch>

 

-----Original Message-----
From: python-list-bounces+oyvind.ostlund=cern.ch at python.org [mailto:python-list-bounces+oyvind.ostlund=cern.ch at python.org] On Behalf Of Klaus Alexander Seistrup
Sent: Wednesday, May 11, 2005 12:14 PM
To: python-list at python.org
Subject: Re: Reading files into a 2D list.

?yvind ?stlund wrote:

> I have a list of about 20 files that I want to read line by line into 
> a 2D list. So the first dimension will be each file, and the second 
> every line in that file.
>
> I tried to do something like this:
>
>     files_and_lines = [][]
>     filenumber = 0
>     
>     for files in file_names:
>         try:
>             lexi_file = open(str(sys.path[0]) + "/lexi/" + files, "r")
>             files_and_lines[filenumber] = lexi_file.readlines()
>             filenumber = filenumber + 1
>
>         except(IOError):
>             print "Something went wrong trying to read the file:"
>             print "'" + str(sys.path[0]) + files + "'"

I'm not sure I understand you.  Do you wish to end up with an array like this:

#v+

    [fileName0][fileLines0]
    [fileName1][fileLines1]
      ...
    [fileNameN][fileLinesN]

#v-

In that case try something like:

#v+

>>> files_and_lines = []
>>> for name in file_names:
>>>     files_and_lines.append([name, open(name, 'r').readlines()]) 
>>> print 'Read %d files' % (len(files_and_lines),)

#v-

Add proper error checking.

At least, I think the [].append() method is what you're looking for.

Cheers,

--
Klaus Alexander Seistrup
Magnetic Ink, Copenhagen, Denmark
http://magnetic-ink.dk/
--
http://mail.python.org/mailman/listinfo/python-list


Thanks for the reply. But I might have been a bit clearer. 


What I want to do is to be able to write:

files_and_lines[5][5]

And then I am accessing the 6th line in the 6th file, so I can print that line if I want, or do what ever I want with it. So if I did this:

If files_and_lines[1][1] == files_and_lines[1][100]: 

Then I would check if those two lines had the same content. I tried your solution, and if I didn't do anything else wrong, I think you missunderstood me a bit, because if I try print files_and_lines[1][1] now, it prints whole lot more then just one line from file 2.


Thanks
??


From newpip at gmail.com  Mon May 16 21:21:06 2005
From: newpip at gmail.com (new pip)
Date: Tue, 17 May 2005 09:21:06 +0800
Subject: RotatingFileHandler in Python 2.3.5
Message-ID: <bccb8928050516182114fa90b8@mail.gmail.com>

Is the RotatingFileHandler (from the logging module) available in
Python 2.3.5? I'm getting a "AttributeError: 'module' object has no
attribute 'RotatingFileHandler'" error message when trying to use it.

Thank you


From swaroopch at gmail.com  Thu May 12 08:11:01 2005
From: swaroopch at gmail.com (Swaroop C H)
Date: Thu, 12 May 2005 17:41:01 +0530
Subject: Read tab delimited ascii file
In-Reply-To: <55B245050A9AD61192140002A544108B02789DC9@melclapub01.corpmel.bhp.com.au>
References: <AcVWesGRnINWTRUTSL6F6tx4JN1fCA==>
	<55B245050A9AD61192140002A544108B02789DC9@melclapub01.corpmel.bhp.com.au>
Message-ID: <351e88710505120511733d60d2@mail.gmail.com>

On 5/12/05, Irvine, Wayne D <Wayne.D.Irvine at bhpbilliton.com> wrote:
> I have a tab delimited ascii/excel file formated like ...

The CSV module can help you:
http://docs.python.org/lib/module-csv.html

HTH,
-- 
Swaroop C H
Blog: http://www.swaroopch.info
Book: http://www.byteofpython.info


From baza at NOSPAMthemauvezone.org.uk  Thu May 12 22:21:40 2005
From: baza at NOSPAMthemauvezone.org.uk (baza)
Date: Fri, 13 May 2005 03:21:40 +0100
Subject: OSx 10.4 lacks pythonIDE?
Message-ID: <2005051303214075249%baza@NOSPAMthemauvezoneorguk>

Where is the IDE in 'Tiger' for the mac? Don't tell me I have to use 
text edit all the time??

B
-- 
Computer says 'No'



From gene.tani at gmail.com  Thu May  5 09:26:49 2005
From: gene.tani at gmail.com (gene.tani at gmail.com)
Date: 5 May 2005 06:26:49 -0700
Subject: OOPS concept
In-Reply-To: <4279c95d$1_2@rain.i-cable.com>
References: <42787b58$1_2@rain.i-cable.com>
	<mailman.35.1115273221.29826.python-list@python.org>
	<4279c95d$1_2@rain.i-cable.com>
Message-ID: <1115299609.065784.139210@g14g2000cwa.googlegroups.com>

Chapter 5, Python in Nutshell: concise explanations of everythin' you
need to know about inheritance, instantiation, method resolution,
namespaces, class/instance methods, getting under the hood with special
methods, whatever.  I couldn't code without it:

http://www.oreilly.com/catalog/pythonian/



From mahs at telcopartners.com  Mon May  2 17:18:01 2005
From: mahs at telcopartners.com (Michael Spencer)
Date: Mon, 02 May 2005 14:18:01 -0700
Subject: Sequences in list
In-Reply-To: <1115063524.407859.273070@o13g2000cwo.googlegroups.com>
References: <1115063524.407859.273070@o13g2000cwo.googlegroups.com>
Message-ID: <d56519$qem$1@sea.gmane.org>

temp at mclift.fsnet.co.uk wrote:
> Hi All,
> 
> I wonder could someone help me with this?
> 
> What I want to do is search through a list of letters and look for
> adjacent groups of letters that form sequences, not in the usual way of
> matching say abc to another appearance later on in the list but to look
> for transposed patterns.
> 
> The groups of letters can be made up of between 2 to 4 letters.
> It is not know beforehand how the groups are formed, so I can't say
> here is a group, look for a sequence formed from this.
> There must be at least three appearances of the groups for the sequence
> to be pass.
> More than one sequence may show in a list, i.e. first abc, bcd and cde
> followed by bd, df, fa, ac at some later point.
> Ideally I would like to know the start and end position of the
> sequence/sequences.
> 
> I'm looking for patterns such as these:
> 
> ['a', 'b', 'c', 'b', 'c', 'd', 'c', 'd', 'e']
> ['a', 'c', 'f', 'c', 'e', 'h', 'e', 'g', 'c']
> ['c', 'a', 'a', 'f', 'f', 'd', 'd', 'b']
> 
> But these would be wrong:
> 
> ['a', 'b', 'c', 'b', 'c', 'd', 'c', 'd', 'e', 'f', 'a', 'd'] - This one
> fails because of the 'jump' of the last group of three letters in
> relation to the others. To pass the last group would need to have been
> def. However, the previous three groups are ok and would be passed as a
> sequence.
> 
> ['a', 'c', 'f', 'a', 'f', 'e', 'e', 'g', 'c'] - Here, although the
> first and last groups have a similar sequence this would fail because
> of the intervening group (afe) not following the pattern.
> 
> 
> 
> Thanks for any help,
> 
> Malcolm
> 
I'm not sure I understand exactly what you want to do, but some of the following 
may help

# Good sequences
s1 = ['a', 'b', 'c', 'b', 'c', 'd', 'c', 'd', 'e']
s2 = ['a', 'c', 'f', 'c', 'e', 'h', 'e', 'g', 'c']
s3 = ['c', 'a', 'a', 'f', 'f', 'd', 'd', 'b']

# Bad sequences
b1 = ['a', 'b', 'c', 'b', 'c', 'd', 'c', 'd', 'e', 'f', 'a', 'd']
b2 = ['a', 'c', 'f', 'a', 'f', 'e', 'e', 'g', 'c']


def make_groups(sequence, n):
     """return groups of length n from sequence
     Usage:
      >>> list(make_groups(s1,3))
     [['a', 'b', 'c'], ['b', 'c', 'd'], ['c', 'd', 'e']]
     """
     length = len(sequence)
     if length % n:
         raise ValueError, "Sequence length %s is not multiple of %s"\
                             % (length, n)
     for i in xrange(0, length, n):
         yield sequence[i:i+n]

def make_diffs(groups):
     """return groups in canonical form where the first note
     in each sequence is 0, and each subsequent note is expressed as
     a positive interval from the first.
     Example:
      >>> list(make_diffs([['a', 'b', 'c'], ['b', 'c', 'd'], ['c', 'd', 'e']]))
     [(0, 1, 2), (0, 1, 2), (0, 1, 2)]
     """
     for group in groups:
         base, basechr = [0], ord(group[0])
         for char in group[1:]:
             diff = ord(char) - basechr
             # although not specified it seems that you want
             # to compare diffs mod 7 i.e. -2 == +5
             base.append(diff % 7)
         yield tuple(base)

def compare_forms(sequence):
     """test whether all groups of a sequence have the same form"""
     for length in range(4,2,-1): # look for longest match first
         forms = {}
         try:
             for group in make_diffs(make_groups(sequence, length)):
                 forms[group] = forms.get(group,0)+1
             print forms
         except ValueError:
             # raised if the sequence is not a multiple of length
             pass

  >>> compare_forms(s1)
  {(0, 1, 2): 3}  # found three instances of (0,1,2)
  >>> compare_forms(s2)
  {(0, 2, 5): 3} # found three instances
  >>> compare_forms(s3)
  {(0, 5, 5, 3): 2} # found two instances
  >>> compare_forms(b1)
  {(0, 1, 3, 6): 1, (0, 1, 2, 1): 1, (0, 1, 0, 1): 1} # found 3 4-tuples
  {(0, 1, 2): 3, (0, 2, 5): 1} # found 3 instances of (0,1,2) and 1 other
  >>> compare_forms(b2)
  {(0, 5, 4): 1, (0, 2, 5): 2}
  >>>

HTH
Michael



From python-url at phaseit.net  Tue May  3 11:26:57 2005
From: python-url at phaseit.net (Simon Brunning)
Date: Tue, 03 May 2005 15:26:57 +0000
Subject: Dr. Dobb's Python-URL! - weekly Python news and links (May  3)
Message-ID: <mailman.136.1115184182.6583.python-announce-list@python.org>

QOTW: "The security 'droids have decided that since the MS Office Suite is a
'standard' application then software written in MS Office VBA must be 'safe.'
Any other development environments (such as Java, Perl, Cygwin) are 'unsafe'
and can't be installed." - Peter Olsen

"There's nothing wrong with open source projects catering to a market, and
there's nothing wrong with running open source software on a proprietary
operating system." - Steve Holden

        
    Efficiently running a regex over a large file:
        http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/6a91f75b5bef1d0d
        
    Readable switch construction without lambdas or dictionaries:
        http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/410692
        
    Lexical Analysis, Python-style:
        http://jason.diamond.name/weblog/2005/04/26/lexical-analysis-python-style

    What happened at Python UK:
        http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/72446ebe0271f3cf
        http://www.reportlab.org/~andy/accu2005/accu2005.html
        
    Europython 2005:
        http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/3ac8419954f9094a
        
    PyCon Brasil is a success!
        http://www.livejournal.com/users/gniemeyer/

    Using the logging module:
        http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/412552
        
    Sparklines in data: URIs:
        http://bitworking.org/news/Sparklines_in_data_URIs_in_Python
        
    Static typing is a sleeping policeman:
        http://www.itworld.com/AppDev/nls_ebiznaked050426/
        
    Got some free time? The Python Challenge will fix that:
        http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/7a755219ea1a5cec
        
    Let Python be Python:
        http://www.unixreview.com/documents/s=9700/ur0504k/

    Yet another Python code sharing site:
        http://www.pycode.com/
        
    Notable releases:
        ID3Writer
            http://www.comfortableshoe.co.uk/cgi-bin/blosxom.cgi/Home/Python/id3Writer.comments
        Snakelets 1.40
            http://snakelets.sourceforge.net/
        Roundup 0.8.3
            http://roundup.sourceforge.net/
        wxPython 2.6.0.0
            http://wxpython.org/
        PyDev 0.9.3
            http://pydev.sourceforge.net/
        PythonCAD 24
            http://www.pythoncad.org/


========================================================================
Everything Python-related you want is probably one or two clicks away in
these pages:

    Python.org's Python Language Website is the traditional
    center of Pythonia
        http://www.python.org
    Notice especially the master FAQ
        http://www.python.org/doc/FAQ.html

    PythonWare complements the digest you're reading with the
    marvelous daily python url
         http://www.pythonware.com/daily  
    Mygale is a news-gathering webcrawler that specializes in (new)
    World-Wide Web articles related to Python.
         http://www.awaretek.com/nowak/mygale.html 
    While cosmetically similar, Mygale and the Daily Python-URL
    are utterly different in their technologies and generally in
    their results.

    For far, FAR more Python reading than any one mind should
    absorb, much of it quite interesting, several pages index
    much of the universe of Pybloggers.
	http://lowlife.jp/cgi-bin/moin.cgi/PythonProgrammersWeblog
        http://www.planetpython.org/
        http://mechanicalcat.net/pyblagg.html

    comp.lang.python.announce announces new Python software.  Be
    sure to scan this newsgroup weekly.
        http://groups.google.com/groups?oi=djq&as_ugroup=comp.lang.python.announce

    Steve Bethard, Tim Lesher, and Tony Meyer continue the marvelous
    tradition early borne by Andrew Kuchling, Michael Hudson and Brett
    Cannon of intelligently summarizing action on the python-dev mailing
    list once every other week.
	http://www.python.org/dev/summary/

    The Python Package Index catalogues packages.
        http://www.python.org/pypi/

    The somewhat older Vaults of Parnassus ambitiously collects references
    to all sorts of Python resources.
        http://www.vex.net/~x/parnassus/   

    Much of Python's real work takes place on Special-Interest Group
    mailing lists
        http://www.python.org/sigs/

    The Python Business Forum "further[s] the interests of companies
    that base their business on ... Python."
	http://www.python-in-business.org

    Python Success Stories--from air-traffic control to on-line
    match-making--can inspire you or decision-makers to whom you're
    subject with a vision of what the language makes practical.
        http://www.pythonology.com/success

    The Python Software Foundation (PSF) has replaced the Python
    Consortium as an independent nexus of activity.  It has official
    responsibility for Python's development and maintenance. 
        http://www.python.org/psf/
    Among the ways you can support PSF is with a donation.
        http://www.python.org/psf/donate.html

    Kurt B. Kaiser publishes a weekly report on faults and patches.
        http://www.google.com/groups?as_usubject=weekly%20python%20patch
       
    Cetus collects Python hyperlinks.
        http://www.cetus-links.org/oo_python.html

    Python FAQTS
        http://python.faqts.com/

    The Cookbook is a collaborative effort to capture useful and
    interesting recipes.
	http://aspn.activestate.com/ASPN/Cookbook/Python

    Among several Python-oriented RSS/RDF feeds available are
	http://www.python.org/channews.rdf
	http://bootleg-rss.g-blog.net/pythonware_com_daily.pcgi
	http://python.de/backend.php
    For more, see
	http://www.syndic8.com/feedlist.php?ShowMatch=python&ShowStatus=all
    The old Python "To-Do List" now lives principally in a
    SourceForge reincarnation.
        http://sourceforge.net/tracker/?atid=355470&group_id=5470&func=browse
        http://python.sourceforge.net/peps/pep-0042.html
     
    The online Python Journal is posted at pythonjournal.cognizor.com.
    editor at pythonjournal.com and editor at pythonjournal.cognizor.com
    welcome submission of material that helps people's understanding
    of Python use, and offer Web presentation of your work.

    del.icio.us presents an intriguing approach to reference commentary.
    It already aggregates quite a bit of Python intelligence.
        http://del.icio.us/tag/python

    *Py: the Journal of the Python Language*
        http://www.pyzine.com

    Archive probing tricks of the trade:
        http://groups.google.com/groups?oi=djq&as_ugroup=comp.lang.python&num=100
        http://groups.google.com/groups?meta=site%3Dgroups%26group%3Dcomp.lang.python.*

Previous - (U)se the (R)esource, (L)uke! - messages are listed here:
  http://www.ddj.com/topics/pythonurl/ (requires subscription)
  http://groups-beta.google.com/groups?q=python-url+group:comp.lang.python*&start=0&scoring=d&
  http://purl.org/thecliff/python/url.html (dormant)
or
  http://groups.google.com/groups?oi=djq&as_q=+Python-URL!&as_ugroup=comp.lang.python


Suggestions/corrections for next week's posting are always welcome.
E-mail to <Python-URL at phaseit.net> should get through.

To receive a new issue of this posting in e-mail each Monday morning
(approximately), ask <claird at phaseit.net> to subscribe.  Mention
"Python-URL!".


-- The Python-URL! Team--

Dr. Dobb's Journal (http://www.ddj.com) is pleased to participate in and
sponsor the "Python-URL!" project.




From steven.bethard at gmail.com  Thu May 12 00:45:50 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Wed, 11 May 2005 22:45:50 -0600
Subject: Python Documentation (should be better?)
In-Reply-To: <mailman.423.1115869391.29826.python-list@python.org>
References: <5C99C308457E6D4EA5448EA52A66004A675A6E@or.mxim.com>	<17026.26789.592527.975821@montanaro.dyndns.org>	<mailman.398.1115843305.29826.python-list@python.org>	<428276e8$0$318$626a14ce@news.free.fr>	<mailman.411.1115854727.29826.python-list@python.org>	<lvudnZwSQdrDAh_fRVn-sQ@comcast.com>	<4282A5DF.44C84B18@pauahtun.org>
	<d5u8mk$k6n$1@sea.gmane.org>
	<mailman.423.1115869391.29826.python-list@python.org>
Message-ID: <aIWdnc5wo4QQQh_fRVn-2w@comcast.com>

Ivan Van Laningham wrote:
> I get that.  My question, cleverly concealed in a rant, was, "Why does
> clicking on the Documentation link at python.org NOT take me to
> docs.python.org?"

I believe the issue here is that docs.python.org is only the *current* 
documentation.  www.python.org/doc lists a variety of items which are 
not part of the current documentation, e.g.:

  * the development documentation
  * documentation for previous python versions
  * the Python wiki
  etc.

None of these are part of the official current documentation, so they're 
not on docs.python.org (so that when you search docs.python.org, you 
*do* only get the current documentation).

Would it have been better for you if the large link that says
  "Browse Current Documentation"
said instead
  "Browse and Search Current Documentation"
?

STeVe


From kay.schluehr at gmx.net  Wed May 11 02:07:04 2005
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: 10 May 2005 23:07:04 -0700
Subject: pyvm -- faster python
In-Reply-To: <7xpsvymlse.fsf@ruckus.brouhaha.com>
References: <mailman.164.1115548611.29826.python-list@python.org>
	<1115561483.741761.212140@f14g2000cwb.googlegroups.com>
	<m102l2-9qr.ln1@home.rogerbinns.com>
	<mailman.264.1115716603.29826.python-list@python.org>
	<vu38l2-k5v.ln1@home.rogerbinns.com>
	<7xvf5qbir1.fsf@ruckus.brouhaha.com>
	<nt98l2-1e.ln1@home.rogerbinns.com>
	<7xpsvymlse.fsf@ruckus.brouhaha.com>
Message-ID: <1115791624.856252.247890@z14g2000cwz.googlegroups.com>


Paul Rubin wrote:
> "Roger Binns" <rogerb at rogerbinns.com> writes:
> > Err, you proved my point!  Prothon was fine at the VM level.  The
> > author couldn't figure out how to get a decent sized "standard"
> > library, and ultimately ended up abandoning his VM for .Net since
> > that gets you a large standard library.  Jython also gets a large
> > standard library from the Java ones.
>
> What kind of stuff is in the existing Python C library that couldn't
> be reimplemented or retargeted pretty easily?  Most of it is either
> wrappers for standard C functions (system calls), stuff that
shouldn't
> be in C in the first place (the Python compiler and interpreter),
etc.

Delete the "standard" and You still obtain huge librarys for .Net, Java
and Python. I also regret that Prothon starved in infancy but it might
be exeggerated to demand that each language designer or one of his
apostels should manage a huge community that enjoys doing redundant
stuff like writing Tk-bindings, regexp-engines and all that.

> I hope that PyPy will replace CPython once it's solid enough.  Trying
> to stay backwards compatible with the legacy C API doesn't seem to me
> to be that important a goal.  Redoing the library may take more work
> than the Prothon guy was willing to do for Prothon, but PyPy has more
> community interest and maybe can attract more resources.

PyPy is a beast on it's own and provides interesting new ideas to
Python as well as runtime design in general. But I'm not quite shure
that it will stay in the boundarys of the current Python community
process and will subordinate to Guidos will. As a Marxist would say:
who controls the runtime also controls the language. Sooner or later
Python will go the LISP way of having a standardized "Common-Python" (
std_objectspace) and a number of dialects and DSLs running in their own
derived object spaces. Maybe Python 3000 is an illusion and will fade
away like a Fata Morgana the closer we seem come.

Kay



From Bernd.Nawothnig at t-online.de  Mon May 16 13:03:47 2005
From: Bernd.Nawothnig at t-online.de (Bernd Nawothnig)
Date: Mon, 16 May 2005 19:03:47 +0200
Subject: newbie - variable "buried in quotes"
References: <1116260476.332975.87680@g49g2000cwa.googlegroups.com>
	<tdvml2-9ii.ln1@Bernd.Nawothnig.dialin.t-online.de>
	<1116262416.305181.5320@g44g2000cwa.googlegroups.com>
Message-ID: <jc0nl2-imi.ln1@Bernd.Nawothnig.dialin.t-online.de>

On 2005-05-16, plsullivan wrote:

> If I follow your response Bernd, it looks like you interpreted that as
> several lines. It actually should all be on one line. That's what made
> me wonder if there is a line continuation character.

The lines are concatenated to one string as I wrote it.

See also fup from Peter Hansen for more explanations.



Bernd

-- 
Those who desire to give up freedom in order to gain security,
will not have, nor do they deserve, either one. [T. Jefferson]


From michele.simionato at gmail.com  Thu May 19 10:56:32 2005
From: michele.simionato at gmail.com (Michele Simionato)
Date: 19 May 2005 07:56:32 -0700
Subject: self-promotion of the decorator module
In-Reply-To: <Xns965B6367B75F0duncanbooth@127.0.0.1>
References: <1116484694.122678.11980@f14g2000cwb.googlegroups.com>
	<Xns965B6367B75F0duncanbooth@127.0.0.1>
Message-ID: <1116514592.565042.202700@g43g2000cwa.googlegroups.com>

I have uploaded version 0.5 that should fix all the
subtle bugs you pointed out, but there could be others
(I would not be surprised in that case ;).
I will add a test suite for various corner cases tomorrow.

BTW, I cannot decide if exotic function signatures are
a feature or an accident ...


             Michele Simionato



From fp at tiny.be  Sun May  1 06:17:23 2005
From: fp at tiny.be (pinky)
Date: 1 May 2005 03:17:23 -0700
Subject: ERP & CRM in Python
Message-ID: <1114942643.046728.238980@g14g2000cwa.googlegroups.com>

Hello,

We released an open source complete ERP & CRM in Python;
http://tinyerp.org
The main features are;
   . customers/suppliers relationship managment,
   . accounting (analytic & financial),
   . stock management,
   . sales & purchases managment,
   . tasks automation,
   . marketing campaign,
   . helpdesk,
   . network management, ...

Technical features; editable workflows, dynamic GUI, object db (orm),
pdf/office reporting, xml-rpc & soap interface, ...

We are looking for contributors;
   . writing docs,
   . i18n; translations, account chart,
   . interfacing Tiny ERP with some open source eCommerce,
   . test the program and evaluate new needs,
   . new module developement,
   . packaging Tiny ERP in Linux distribution

Links;
   . functionnal presentation; http://tinyerp.com
   . download, doc, forum ; http://tinyerp.org

Thanks,

Fabien.



From fredrik at pythonware.com  Sun May 15 02:07:39 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Sun, 15 May 2005 08:07:39 +0200
Subject: A new to Python question
References: <1116088663.428932.130860@g43g2000cwa.googlegroups.com><Dkqhe.1732$aM4.440@newssvr11.news.prodigy.com>
	<cqohl2-pj5.ln1@Bernd.Nawothnig.dialin.t-online.de>
Message-ID: <d66ouv$46d$1@sea.gmane.org>

Bernd Nawothnig wrote:

> > You're thinking you're passing the arguments as reference
>
> That is the way Fortran handles them:

which is one of the things you really love when you link against
underdocumented Fortran programs from C.  ("is that parameter
a scalar or an array? crash! oh, an array. how many values does
it expect? crash! oh, a few more, I suppose").

</F>





From http  Mon May 23 05:56:35 2005
From: http (Paul Rubin)
Date: 23 May 2005 02:56:35 -0700
Subject: Is Python suitable for a huge, enterprise size app?
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>
	<1116432325.497438.64580@g49g2000cwa.googlegroups.com>
	<1116433218.495131.71260@g49g2000cwa.googlegroups.com>
	<1116440427.255902.36260@g49g2000cwa.googlegroups.com>
	<mailman.194.1116489874.8733.python-list@python.org>
	<x7wtptmzkl.fsf@handshake.de>
	<slrnd938ra.ik7.apardon@rcpc42.vub.ac.be>
Message-ID: <7xu0kub6zw.fsf@ruckus.brouhaha.com>

Antoon Pardon <apardon at forel.vub.ac.be> writes:
> Well nothing. But how do you want to return memory back
> to the O.S. when the residual memory use isn't compact
> and evenly spread across the address space?

All large-scale language implementations with automatic storage
management that I know of use compacting storage schemes, e.g. copying
garbage collectors (maybe generational, multi-threaded/realtime, or
whatever).  I think Python will have to do the same, sooner or later.


From lycka at carmen.se  Mon May 30 08:05:36 2005
From: lycka at carmen.se (Magnus Lycka)
Date: Mon, 30 May 2005 14:05:36 +0200
Subject: Is there a better way of doing this?
In-Reply-To: <pan.2005.05.29.11.42.53.412990@REMOVETHIScyber.com.au>
References: <d79re2$sgg$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
	<pan.2005.05.29.11.42.53.412990@REMOVETHIScyber.com.au>
Message-ID: <d7evig$h01$1@wake.carmen.se>

Steven D'Aprano wrote:
 > print is a statement, not a function. The brackets are syntactically
 > correct, but pointless. Remove them.
...
> On Sat, 28 May 2005 13:24:19 +0000, Michael wrote:
>> while( newNS ):
> 
> Guido (our Benevolent Dictator For Life and creator of Python) hates
> seeing whitespace next to parentheses. I agree with him. while(newNS)
> good, while( newNS ) bad.

while is a statement, not a function. The brackets are syntactically
correct, but pointless. Remove them. ;^)

     while newNS:

Not only are they pointless (in both print and while), but they are
blurring the distinction between statements and callables, and they
add noise. Only wrap the expression following a statement such as
while, if, print etc in () if the following expression spans several
lines.

Using () instead of \ as line continuator is considered good style.
(See http://www.python.org/doc/essays/ppt/regrets/PythonRegrets.pdf
slide 3.) In that case, make sure you have a space between the
statement and the (. Never have space between a callable and
the (. That way, we emphasize the difference between a statemens
and a call. E.g:

while (aVeryVeryVeryLongVariableName == anotherVeryVeryLongName
        or aThirdLongVariableName == aFourthLongVariableName):
     something = function(parameterOne, parameterTwo, parameterThree,
                          parameterFour, parameterFive, etc)


N.B. Use "while (" but "function(".

(I'm not suggesting that such long variable names are generally
good, but there are certainly cases where both logical expressions
and parameter lists will be too long for one line, for instance when
working with stuff such as the win32 APIs.)

Please note the big conceptual difference in using a statement which
controls local program flow, and calling a function/method/class etc
which means that we transfer control to a different part of the
program. Some of the current statements in Python, e.g. print,
actually behaves more like a function than like the normal statements,
and this might be considered a wart. It's also mentioned in Guido's
"regrets" slides mentioned above. Print and exec *are* still not
callables though. They *are* statements, whether we like it or not.

If writing "print(something)" feels better than "print something",
I suggest you define a function called writeln etc and use that
instead of print, e.g.

 >>> import sys
 >>> def writeln(*args):
...     sys.stdout.write(" ".join(map(str, args)) + '\n')


From rkern at ucsd.edu  Sat May  7 03:46:24 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Sat, 07 May 2005 00:46:24 -0700
Subject: How to create email distribution list in yahoo mail?
In-Reply-To: <d5hrdg+6g6r@eGroups.com>
References: <d5hrdg+6g6r@eGroups.com>
Message-ID: <d5hrbh$49m$1@sea.gmane.org>

egelendu wrote:
> How to create email distribution list in yahoo mail?

This is a mailing list/newsgroup for the Python programming language. 
Questions about Yahoo Mail should go somewhere else.

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From newsgroups at jhrothjr.com  Sat May 28 18:01:51 2005
From: newsgroups at jhrothjr.com (John Roth)
Date: Sat, 28 May 2005 16:01:51 -0600
Subject: String manipulations
References: <1117316427.826830.189260@g14g2000cwa.googlegroups.com>
Message-ID: <119hqil4l4pe83@news.supernews.com>

"Lorn" <efoda5446 at yahoo.com> wrote in message 
news:1117316427.826830.189260 at g14g2000cwa.googlegroups.com...
> I'm trying to work on a dataset that has its primary numbers saved as
> floats in string format. I'd like to work with them as integers with an
> implied decimal to the hundredth. The problem is that the current
> precision is variable. For instance, some numbers have 4 decimal places
> while others have 2, etc. (10.7435 vs 1074.35)... all numbers are of
> fixed length.

> I have some ideas of how to do this, but I'm wondering if there's a
> better way. My current way is to brute force search where the decimal
> is by slicing and then cutoff the extraneous numbers, however, it would
> be nice to stay away from a bunch of if then's.
>
> Does anyone have any ideas on how to do this more efficiently?

If you can live with a small possibility of error, then:

int(float(numIn) * 100.0)

should do the trick.

If you can't, and the numbers are guaranteed to have a decimal point,
this (untested) could do what you want:

aList = numIn.split(".")
result int(aList[0]) * 100 + int(aList[1][:2])

HTH

John Roth
>
> Many Thanks,
> Lorn
> 



From sklass at pointcircle.com  Thu May 19 14:52:30 2005
From: sklass at pointcircle.com (rh0dium)
Date: 19 May 2005 11:52:30 -0700
Subject: Convert from numbers to letters
In-Reply-To: <mailman.209.1116513780.8733.python-list@python.org>
References: <1116511005.900715.107260@o13g2000cwo.googlegroups.com>
	<mailman.209.1116513780.8733.python-list@python.org>
Message-ID: <1116528750.285895.27720@f14g2000cwb.googlegroups.com>

Call me crazy..  But it doesn't work..

for i, digraph in enumerate(sorted([''.join((x, y)) for x in alpha for
y in [''] + [z for z in alpha]], key=len)):
   globals()[digraph]=i+1

How do you implement this sucker??

Thanks



From ivanlan at pauahtun.org  Wed May 18 18:00:55 2005
From: ivanlan at pauahtun.org (Ivan Van Laningham)
Date: Wed, 18 May 2005 16:00:55 -0600
Subject: Is Python suitable for a huge, enterprise size app?
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>
	<jmbsl2-opn.ln1@lairds.us>
	<1116442276.918194.194110@g44g2000cwa.googlegroups.com>
	<mailman.163.1116443300.8733.python-list@python.org>
	<1116450537.626601.251990@g49g2000cwa.googlegroups.com>
Message-ID: <428BBB17.4AD3C5BB@pauahtun.org>

Hi All--

George Sakkis wrote:
> 
> "Ivan Van Laningham" wrote:
> 
> An idea that perhaps takes the best of both worlds is use java for the
> high level architecture and static type interfaces, and write the bulk
> of the implementation in jython. PSF has awarded a grant to make jython
> catch up with cpython, and that's good news for making the transition
> from java to python smoother to a large audience. Others may have more
> to say on the pros and cons of going with java/jython instead of
> cpython, but it seems a good compromise to me.
> 

And another option that you'll find has a great deal of viability is
using Python in the build process.  Python's _wonderful_ to glue things
together, and its i18n capabilities are outstanding; I handled all the
internationalization and mock translation processes for a project near
the size you're describing in a dozen languages without working up a
sweat.  Python is easily called by Ant, it deals really well with
unicode & utf-8, can easily parse Java resource files and XML files, and
you can stick all this stuff together in a few hours to handle _really
big builds_.

It's been nearly a year since the project failed and the company riffed
60 people from our site besides me, and the java monkeys that are left
are still using my Python scripts, in the same state I left 'em.  They
can run them but they can't modify them.  And every time they have to
produce a new mock-translation build, they complain to their boss:  "We
used to have someone here who LIKED to do this stuff!  And who could fix
it when it broke!  We laid him off WHY????"

;-)

Metta,
Ivan
----------------------------------------------
Ivan Van Laningham
God N Locomotive Works
http://www.andi-holmes.com/
http://www.foretec.com/python/workshops/1998-11/proceedings.html
Army Signal Corps:  Cu Chi, Class of '70
Author:  Teach Yourself Python in 24 Hours


From mario at nospam.noext  Wed May 11 17:19:46 2005
From: mario at nospam.noext (Mario)
Date: Wed, 11 May 2005 23:19:46 +0200
Subject: HELP Printing with wxPython
References: <d5t4oj$sct$1@carabinieri.cs.interbusiness.it>
	<mailman.357.1115820240.29826.python-list@python.org>
Message-ID: <d5u5kt$pkq$1@carabinieri.cs.interbusiness.it>


"James Carroll" <mrmaple at gmail.com> wrote:
>I especially like the HtmlEasyPrinting write-up here:
>   http://wiki.wxpython.org/index.cgi/Printing

Thank you for your suggestion but I'm just not able to make it work, as i
said on the original post, I do exactly what is wrote there, but it gives
errors, I think the script is not updated and not working fine with the
latest versions of python or wxpython.

Mario






From fredrik at pythonware.com  Mon May  9 07:39:07 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Mon, 9 May 2005 13:39:07 +0200
Subject: Fredrik Lundh
References: <mailman.139.1115189526.6583.python-list@python.org><maednQfrx_iwL-XfRVn-hA@powergate.ca>	<Av-dnbF5u_SOpOffRVn-vQ@comcast.com>	<mailman.66.1115324909.29826.python-list@python.org>	<k42dnWFaUMRQeePfRVn-pg@comcast.com>	<mailman.188.1115614698.29826.python-list@python.org><h9qdneSvU71kZuPfRVn-rw@comcast.com>
	<d5muur$po2$1@sea.gmane.org>
Message-ID: <d5nhn5$fsp$1@sea.gmane.org>

Robert Kern wrote:

>> It hides any mention that Fredrik Lundh is behind it, which is deceitful
>> when he posts any smidgeon of praise his software gets, not admitting he
>> makes his income off support fees for that same software.
>
> I think that reasonable people can draw a line. I would welcome more
> disclosure, however.

I do not make my income off support fees for the free software you can down-
load from pythonware.com or effbot.org. (if you want to know what I do for a
living, check the pythonware.com front-page).

I'm not the only daily-URL editor either; I hardly ever post links to my own stuff
(but that doesn't stop other editors from doing that).

And Doug doesn't work for the IronPython project.

And this is the last thing I'm ever going to say about this; I think any reasonable
person can tell who's the certified nutcase in this thread, and who's not.

</F> 





From nir at digitalpeers.com  Sun May 29 13:09:24 2005
From: nir at digitalpeers.com (Nir Aides)
Date: Sun, 29 May 2005 20:09:24 +0300
Subject: tracing crash
Message-ID: <4299f772$1@news.bezeqint.net>

Hi,

I am facing a strange problem.
I will appreciate an explanation and a work around for the problem.

Look in the following code paste. It seems that taking a reference to 
the frame object crashes python in some scripts:

#
# trace_hell.py
#
# crashes with spe (stani's python editor) v0.7.3.a
#
# to see the crash add "import trace_hell; trace_hell.unleash_hell()" as
# the first line in spe.py
#
# 1. The statement that triggers the crash is "g_frame = frame"
#

import sys

g_frame = None

def tracer(frame, event, arg):
     global g_frame
     g_frame = frame
     return None

def unleash_hell():
     sys.settrace(tracer)


From listserver at tdw.net  Thu May 12 12:11:20 2005
From: listserver at tdw.net (Tim Williams)
Date: Thu, 12 May 2005 17:11:20 +0100
Subject: How "return" no return ?
References: <mailman.389.1115837608.29826.python-list@python.org><1115839271.271071.32710@z14g2000cwz.googlegroups.com><mailman.393.1115840571.29826.python-list@python.org><d5vs3i$54n$2@sea.gmane.org><00fd01c55709$385df110$5aeda8c0@twilliams>
	<20050512155712.GH800@zephyr>
Message-ID: <010b01c5570d$3d1fe920$5aeda8c0@twilliams>


----- Original Message ----- 
From: "Corrado Gioannini" <gioco at nekhem.com>


> On Thu, May 12, 2005 at 04:42:34PM +0100, Tim Williams wrote:
> > Just don't use a return statement at all,  or do something like
> > 
> > [function body]
> > if not val = None:
> >     return val
> > [end of function]
> 
> i didn't understood that.
> if you don't return nothing explicitly the function returns None.
> (or am i wrong?)

No, you're right,  my bad :)

Was thinking about something else similar and got stuck in a mindset




From DavidRushby at gmail.com  Tue May 24 00:47:25 2005
From: DavidRushby at gmail.com (David Rushby)
Date: 23 May 2005 21:47:25 -0700
Subject: Running a python program during idle time only
In-Reply-To: <1116637560.499307.28700@o13g2000cwo.googlegroups.com>
References: <1116637560.499307.28700@o13g2000cwo.googlegroups.com>
Message-ID: <1116910045.339378.122500@f14g2000cwb.googlegroups.com>

los wrote:
> I'm trying to create a program similar to that of Google's desktop
that
> will crawl through the hard drive and index files.  I have written
the
> program and as of now I just put the thread to sleep for 1 second
after
> indexing a couple of files.
>
> I'm wondering if anyone knows of a way that I could make so that the
> program will run at full speed only runs after the computer has been
> idle for a while.  I've looked at the "nice" command but that's not
> exactly what I want.

On Windows:

1) You can use API calls in the win32file.ReadDirectoryChangesW()
family to register to receive notification (event-based, not
polling-based) of changes to one or more directory structures.

2) You can register to be informed X amount of time after the computer
"becomes idle", as explained at
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/taskschd/taskschd/idle_triggers.asp
:
"""
An idle trigger is an event-based trigger that is fired a specific
amount of time after the computer becomes idle. The computer is
considered to be in an idle state when no keyboard or mouse input
occurs.
"""
I haven't actually written any code to do this, but it appears to be
accessible from Python via the win32com.taskscheduler.taskscheduler
module; interface
PyIScheduledWorkItem.[CreateTrigger(TASK_EVENT_TRIGGER_ON_IDLE) +
SetIdleWait(...)].

There are related example programs in
site-packages\win32comext\taskscheduler\test\test_addtask*.py

3) You can programmatically lower the priority of your process with
win32process.SetPriorityClass().

---

So if you combine the three, you can create an indexing program that:

a) Only operates when changes are actually made to the file system (no
busy-wait).

b) Defers all processing until the computer is "idle"; or also runs
when the computer is not idle, yet yields priority to other processes;
or runs under both conditions, but with a more aggressive priority when
the computer is idle.



From lycka at carmen.se  Mon May 30 08:15:16 2005
From: lycka at carmen.se (Magnus Lycka)
Date: Mon, 30 May 2005 14:15:16 +0200
Subject: Threading questions
In-Reply-To: <mailman.213.1117287469.18027.python-list@python.org>
References: <mailman.213.1117287469.18027.python-list@python.org>
Message-ID: <d7f04k$hhl$1@wake.carmen.se>

Antal Rutz wrote:
> Hi, All!
> 
> I'm new to threading. I have some design questions:
> Task: I collect data and store them in an RDBMS (mysql or pgsql)
> 
> The question is how to do that with threading?
> The data-collecting piece of the code runs in a thread.
> 
> 1. Open the db, and each thread writes the result immediately.
>    (Sub-question: which is better: cursor object passed to the thread
>    or stored in a global var.)
> 2. Threads return data, which is written to DB after that.
> 3. Threads write to global variable, after 'join()' data is written.
>    (Can be used global (write-only) variables with threads at all?)
> 4. ?...

I'm not sure why you need threading at all here, but I would avoid
both globals and passing cursors between threads. I don't think all
DB-API implementations can handle threading properly.

I suspect it might be useful to do data collection in one thread,
DB communication in another, and to use a Queue.Queue object to
pass data from data collection to DB insertion thread.


From simon.brunning at gmail.com  Wed May  4 06:20:56 2005
From: simon.brunning at gmail.com (Simon Brunning)
Date: Wed, 4 May 2005 11:20:56 +0100
Subject: py2exe and library.zip
In-Reply-To: <4277EF15.2030605@open-networks.net>
References: <mailman.76.1115095357.6583.python-list@python.org>
	<5uadnUTTqv6Iw-rfRVn-qw@powergate.ca>
	<4277EF15.2030605@open-networks.net>
Message-ID: <8c7f10c6050504032010d9920@mail.gmail.com>

On 5/3/05, Timothy Smith <timothy at open-networks.net> wrote:
> exactly what i just stated, i don't want py2exe to zip up it's
> library's, but to put them in a sub dir.
> the reason for this, is so that when users login and update from svn,
> they only have to download some tiny pyc files, not a great big zip file
> with everything in it ( 99% of which never changes)

The zip file is a generated artifact. I've always found it a good rule
of thumb that you should keep source artifacts in your version control
system, not generated artifacts.

-- 
Cheers,
Simon B,
simon at brunningonline.net,
http://www.brunningonline.net/simon/blog/


From percivall at gmail.com  Mon May 23 21:02:28 2005
From: percivall at gmail.com (Simon Percivall)
Date: 23 May 2005 18:02:28 -0700
Subject: line-by-line output from a subprocess
References: <1116879724.884768.180250@f14g2000cwb.googlegroups.com>
	<mailman.40.1116881886.18027.python-list@python.org>
Message-ID: <1116894297.590396.220520@f14g2000cwb.googlegroups.com>

Jp Calderone wrote:
> Or, doing the same thing, but with less code:

Hmm ... What have I been smoking?



From mefjr75 at hotmail.com  Mon May  2 00:29:23 2005
From: mefjr75 at hotmail.com (M.E.Farmer)
Date: 1 May 2005 21:29:23 -0700
Subject: MRO problems with diamond inheritance?
In-Reply-To: <1115004565.128735.58670@o13g2000cwo.googlegroups.com>
References: <d53jqq$b88$1@newsg4.svr.pol.co.uk>
	<1114987828.055744.250090@z14g2000cwz.googlegroups.com>
	<1115004565.128735.58670@o13g2000cwo.googlegroups.com>
Message-ID: <1115008163.017331.306290@o13g2000cwo.googlegroups.com>

I knew it was a feature but had only a few minutes to answer and was
playing it safe ;)
You would be surprised how many answers you can squeeze out of that one
URL.
That whole page is worth a month of study( for me anyway ).
I am still trying to grasp the 'purpose' of classmethods.

Michele Simionato wrote:
> > M.E.Farmer:
>
> >Your answer lies somewhere in this page ;)
> >http://www.python.org/2.2.2/de?scrintro.html
>
> Yes, when it refers to
>
> http://www.python.org/2.3/mro.html
>
> (section Bad Method Resolution Orders).
>
> In short, it is a feature, not a bug.
> 
>                     Michele Simionato



From dalke at dalkescientific.com  Mon May 16 12:57:12 2005
From: dalke at dalkescientific.com (Andrew Dalke)
Date: Mon, 16 May 2005 16:57:12 GMT
Subject: question about the id()
References: <428809fc.62d7a08a.1cfe.ffffd7ef@mx.gmail.com>
	<mailman.23.1116212733.8733.python-list@python.org>
	<873bsnxhe0.fsf@hector.domek>
Message-ID: <pan.2005.05.16.16.57.10.396536@dalkescientific.com>

Peter Dembinski wrote:
> So, the interpreter creates new 'point in address space' every time
> there is object-dot-method invocation in program?

Yes.  That's why some code hand-optimizes inner loops by hoisting
the bound objection creation, as

data = []
data_append = data.append
for x in some_other_data:
  .... work with x to make y ....
  data_append(y)


				Andrew
				dalke at dalkescientific.com



From harlinseritt at yahoo.com  Mon May  2 07:01:02 2005
From: harlinseritt at yahoo.com (Harlin Seritt)
Date: 2 May 2005 04:01:02 -0700
Subject: Using wildcards...
Message-ID: <1115031662.593097.172810@z14g2000cwz.googlegroups.com>

I looked all over the net but could not find if it is possible to
insert wildcards into strings. What I am trying to do is this: I am
trying to parse text from a Bible file. In case you're not familiar
with the way the Bible organizes itself, it is broken down into Books >
Chapters > Verses. The particular text I am working with are organized
into Book files (*.txt -- flat text file). Here is what the file looks
like:

{1:1} Random text here. {1:2} More text here. and so on.

Of course the {*} can be of any length, so I can't just do .split()
based on the length of the bracket text. What I would like to do is to
.split() using something akin to this:

textdata.split('{*}') # The '*' being a wildcard

Is this possible to do? If so, how is it done?

Thanks,

Harlin Seritt



From Do  Sat May 14 15:00:05 2005
From: Do (Do)
Date: 14 May 2005 14:00:05 -0500
Subject: Jesus said, "I am the way,
	the truth and the life: no one can come to the Father(God)(in Heaven),
	but by me." (John 14:6) This means that if you die without trusting in
	Jesus Christ as your Lord and Saviour you will die in your sins
	and be forever separated from the love of God in a place called
	Hell. The Holy Bible descibes Hell as a place of eternal
	torment, suffering,
	pain and agony for all those who have rejected Jesus Christ. The good
	news is that you can be sure you are going to Heaven when this
	life is over if you allow Jesus Christ to save you today. Do
	not wait until later to be saved because you do not know
	exactly when you will die. [ Posted by:
	RonaldGrossi3848@yahoo.com on May 14, 2005 ] [ 2:52:09 pm ]
References: <1116096706.696830.275140@g44g2000cwa.googlegroups.com>
Message-ID: <khic81dngulq5s9gnu1n5h9cnig2jqj3a5@4ax.com>

Abuse reports to
groups-abuse at google.com,groups-support at google.com,abuse at aol.com,ToSReports at AOL.Com,tosusenet at aol.com,ToSGeneral at Aol.com,mail-abuse at cc.yahoo-inc.com,spam at uce.gov


From phillip.watts at anvilcom.com  Tue May  3 07:34:20 2005
From: phillip.watts at anvilcom.com (phil)
Date: Tue, 03 May 2005 06:34:20 -0500
Subject: Tkinter weirdness item count
References: <mailman.400.1115114086.6582.python-list@python.org>
Message-ID: <427761BC.9090803@anvilcom.com>


> I seem to remember a thread a while ago about a 'bug' with the Tk Canvas
> widget keeping a reference to objects that had been deleted...
> 
> Have you thought about using the 'move' method to move your lines?  I 
> think this will result in less supprises...
> 

Actually I solved that problem. My bug. It does delete the objects.

My current problem, in another post, is that when I draw thousands
of objects plotting complex functions, the drawing gets really slow.

If I draw 12000 points and then return to mainloop it takes 2 seconds.

If I draw each point then call update_idletasks() it takes about 60
seconds.  It goes very fast at first and gradually gets slower.



From python at rcn.com  Thu May 26 02:56:25 2005
From: python at rcn.com (Raymond Hettinger)
Date: 25 May 2005 23:56:25 -0700
Subject: Checking for a full house
In-Reply-To: <7x8y22v76i.fsf@ruckus.brouhaha.com>
References: <1117071824.882035.250710@g49g2000cwa.googlegroups.com>
	<1117085950.739186.14240@z14g2000cwz.googlegroups.com>
	<1117086974.854184.5930@g43g2000cwa.googlegroups.com>
	<7x8y22v76i.fsf@ruckus.brouhaha.com>
Message-ID: <1117090584.977590.208770@g44g2000cwa.googlegroups.com>

[Paul Rubin]
> 1. "Flush" means 5 cards of the same suit (i.e. all hearts), not 5 of
>    a kind.

More importantly, the (5) should be (5,).  Also the poker terminology
should be expressed in terms of dice rolls (the OP's use case).


> 2. That code doesn't detect flushes or straights.

It also doesn't cook hamburgers, drink beer, play chess, or anything
else unrelated to the OP's use case.



From rune.strand at gmail.com  Sat May  7 14:21:30 2005
From: rune.strand at gmail.com (runes)
Date: 7 May 2005 11:21:30 -0700
Subject: win32- system call - getting results back into python
In-Reply-To: <1115487237.888185.311230@o13g2000cwo.googlegroups.com>
References: <1115487237.888185.311230@o13g2000cwo.googlegroups.com>
Message-ID: <1115490090.616900.46830@g14g2000cwa.googlegroups.com>

You wil have to use r"svnlook log \arms") or "svnlook log \\arms") to
escape the "\".

Popen usually return a file-like object, so you maye to use file
methods like .read()

ex:
d = os.popen('dir /b')
print d.read()



From jjl at pobox.com  Sun May  1 09:16:44 2005
From: jjl at pobox.com (John J. Lee)
Date: 01 May 2005 13:16:44 +0000
Subject: Can .py be complied?
References: <426ec8f7_2@rain.i-cable.com>
	<1114696910.862093.100690@z14g2000cwz.googlegroups.com>
	<d4qsmj$5gr$1@domitilla.aioe.org> <d4tk6l$hb3$1@sea.gmane.org>
	<ll71peja.fsf@pobox.com>
	<mailman.61.1114867917.14961.python-list@python.org>
Message-ID: <87acnf2iir.fsf@pobox.com>

Steve Holden <steve at holdenweb.com> writes:

> John J. Lee wrote:
[...]
> > I'm hesitant to label everybody who disagrees with you (and me) on
> > that a zealot.  Though I tend to take the same side you do, I'm not
[...]
> Well, we appear to agree. Please note I wasn't labelling anyone a
> zealot, simply implying that I didn't want the discussion to descend
> to blind repetitions of principle with no supporting arguments.
[...]

Sorry, I wasn't reading carefully.

I suppose really my thought was directed more at the programming world
in general, which often feels free to label free software advocates as
loonies (I've been guilty of this myself, I'm sure).  Of course, lots
of them *are* loonies, but that's beside the point. ;-)


John


From gsakkis at rutgers.edu  Mon May  9 17:13:17 2005
From: gsakkis at rutgers.edu (George Sakkis)
Date: 9 May 2005 14:13:17 -0700
Subject: cimport from different packages [Pyrex]
Message-ID: <1115673197.235403.155100@f14g2000cwb.googlegroups.com>

Does cimport work for importing from different packages in Pyrex ?
Here's a minimal example:

# in ./foo/bar.pxd
cdef class Bar:
    cdef int i

# in ./foo/bar.pyx
cdef class Bar:
    def __init__(self, i):
        self.i = i

# in ./tmp.pyx
cimport foo.bar

$ pyrexc foo/bar.pyx
$ pyrexc tmp.pyx
tmp.pyx:1:8: 'foo.bar.pxd' not found


I tried every reasonable choice for '-I' dir, without success. Am I
missing something or it's just cimport's deficiency ?

George



From rschroev_nospam_ml at fastmail.fm  Wed May  4 18:38:30 2005
From: rschroev_nospam_ml at fastmail.fm (Roel Schroeven)
Date: Wed, 04 May 2005 22:38:30 GMT
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <mailman.23.1115245662.29826.python-list@python.org>
References: <d4u60o$akh$1@news2.netvision.net.il>	<mailman.47.1114818531.14961.python-list@python.org>	<1114924100.296223.114020@g14g2000cwa.googlegroups.com>	<1114927892.321086.60190@z14g2000cwz.googlegroups.com>	<zX%ce.78213$ft1.5056576@phobos.telenet-ops.be>	<Zj2de.78345$a42.5091422@phobos.telenet-ops.be>	<8764y29x3m.fsf@uwo.ca>	<877jihc7qv.fsf@uwo.ca>	<mailman.18.1115242075.29826.python-list@python.org>	<9Ibee.81433$AX1.5235770@phobos.telenet-ops.be>
	<mailman.23.1115245662.29826.python-list@python.org>
Message-ID: <G9cee.81452$4_1.5246075@phobos.telenet-ops.be>

Martijn Pieters wrote:

> Roel Schroeven wrote:
> 
>>You don't really need the remember the solution; it's more the process
>>that led you to find the solution.
> 
> 
> Yup, I do remember the process, and it hasn't been any help so far.. no
> adjustable URLs leading to interesting files, no 'dealable' images, no nada.

Unless Martijn Pieters here and mjpieters in the Python Challenge forum 
are two differen persons, you've found it in the meantime, haven't you?

-- 
If I have been able to see further, it was only because I stood
on the shoulders of giants.  -- Isaac Newton

Roel Schroeven


From thomas at eforms.co.nz  Wed May  4 21:00:32 2005
From: thomas at eforms.co.nz (Thomas Thomas)
Date: Thu, 5 May 2005 13:00:32 +1200
Subject: UnicodeDecodeError 
Message-ID: <2e389380c58ab1d3add5fd02a86cc7b4@eforms.co.nz>

Hi all,

Forgot to mention I am using python 2.3 on windows.

I got the same error in mac panther .

if I remove the line
filename=unicode(filename);
it works fine sometimes

and if I encode the filename to ascii it works fine

Thanks
Thomas



From Neruocomp at yahoo.com  Sat May 14 14:25:32 2005
From: Neruocomp at yahoo.com (David)
Date: 14 May 2005 11:25:32 -0700
Subject: A new to Python question
In-Reply-To: <1116094967.991001.306340@g14g2000cwa.googlegroups.com>
References: <1116088663.428932.130860@g43g2000cwa.googlegroups.com>
	<1116092670.420301.196570@o13g2000cwo.googlegroups.com>
	<1116094967.991001.306340@g14g2000cwa.googlegroups.com>
Message-ID: <1116095132.843663.312910@f14g2000cwb.googlegroups.com>

Hmm don't know what happened.  I guess the formatting got all chewed up.



From fuzzyman at gmail.com  Tue May  3 05:21:45 2005
From: fuzzyman at gmail.com (Fuzzyman)
Date: 3 May 2005 02:21:45 -0700
Subject: Voidspace Python Guestbook 1.4.1 (etc)
In-Reply-To: <mailman.30.1114786085.14961.python-announce-list@python.org>
References: <mailman.30.1114786085.14961.python-announce-list@python.org>
Message-ID: <mailman.100.1115125711.6583.python-announce-list@python.org>

Oops... those links should have read  :

http://www.voidspace.org.uk/py?thon/guestbook.html
http://www.voidspace.org.uk/cg?i-bin/voidspace/downman.py?fil?e=guestbo...

http://www.voidspace.org.uk/cg?i-bin/voidspace/guestbook.py
http://www.voidspace.org.uk/cg?i-bin/voidspace/guestbook2.py

#~$%"?&# Very sorry about that.

Fuzzyman
http://www.voidspace.org.uk/python



From oren.tirosh at gmail.com  Mon May 16 15:49:17 2005
From: oren.tirosh at gmail.com (oren.tirosh at gmail.com)
Date: 16 May 2005 12:49:17 -0700
Subject: ElemenTree and namespaces
References: <d6an8t$554$1@vegh.ks.cc.utah.edu>
Message-ID: <1116272957.323777.79090@g44g2000cwa.googlegroups.com>

Matthew Thorley wrote:
> Does any one know if there a way to force the ElementTree module to
> print out name spaces 'correctly' rather than as ns0, ns1 etc? Or is
> there at least away to force it to include the correct name spaces in
> the output of tostring?
>
> I didn't see anything in the api docs or the list archive, but before
I
> set off to do it myself I thought I should ask, because it seemed
like
> the kind of thing that has already been done.

There's a way, but it requires access to an undocumented internal
stuff. It may not be compatible with other implementations of the
ElementTree API like lxml.

The ElementTree module has a _namespace_map dictionary of "well known"
namespace prefixes mapping namespace URIs to prefixes. By default it
contains the xml:, html:, rdf: and wsdl:. You can add your own
namespace to that dictionary to get your preferred prefix.

In theory, namespace prefixes are entirely arbitrary and only serve as
a temporary link to the namespace URI. In practice, people tend to get
emotionally attached to their favorite prefixes. XPath also breaks this
theory because it refers to prefixes rather than URIs.

<plug>
Take a look at http://www.tothink.com/python/ElementBuilder. It's a
module to provide a friendly syntax for building and populating
Elements:

Example:

>>> import ElementBuilder
>>> from elementtree import ElementTree
>>> ns = ElementBuilder.Namespace('http://some.uri', 'ns')
>>> e = ns.tag(
...   ns.tag2('content'),
...   ns.tag3(attr='value'),
...   ns.tag4({ns.attr: 'othervalue'}),
...   ns.x(
...     ns.y('y'),
...     ns.z('z'),
...     'some text',
...   )
... )
>>> ElementTree.dump(e)
<ns:tag xmlns:ns="http://some.uri"><ns:tag2>content</ns:tag2><ns:tag3
attr="value" /><ns:tag4 ns:attr="othervalue"
/><ns:x><ns:y>y</ns:y><ns:z>z</ns:z>some text</ns:x></ns:tag>

Note that the namespace prefix on output is not "ns0". The second
argument to the Namespace constructor is the prefix hint and unless it
collides with any other namespace or prefix it will be added to
_namespace_map dictionary and used on output.
</plug>

  Oren



From tassilo.von.parseval at rwth-aachen.de  Tue May 24 05:10:46 2005
From: tassilo.von.parseval at rwth-aachen.de (Tassilo v. Parseval)
Date: Tue, 24 May 2005 11:10:46 +0200
Subject: What are OOP's Jargons and Complexities?
References: <1116843761.619249.144790@g47g2000cwa.googlegroups.com>
	<bAske.14563$yx.14338@fe08.lga> <3584469.Aerji1NdQr@yahoo.com>
	<qEuke.24657$NZ1.533@fe09.lga>
	<slrnd95l5i.r5.tassilo.von.parseval@localhost.localdomain>
	<2328173.kzWe5NVpXe@yahoo.com>
Message-ID: <slrnd95rsm.131.tassilo.von.parseval@localhost.localdomain>

Also sprach alex goldman:

> Tassilo v. Parseval wrote:

>> Most often, languages with strong typing can be found on the functional
>> front (such as ML and Haskell). These languages have a dynamic typing
>> system. 
>
> No, ML & Haskell are strongly and statically typed. Read this paper if
> interested:

You're right, their type system is in fact static. To me they never had
a very static feel though which is why I get their classification wrong
most of the time. LISP would have been an example for strongly and
dynamically typed.

Tassilo
-- 
use bigint;
$n=71423350343770280161397026330337371139054411854220053437565440;
$m=-8,;;$_=$n&(0xff)<<$m,,$_>>=$m,,print+chr,,while(($m+=8)<=200);


From python-url at phaseit.net  Tue May 31 11:13:06 2005
From: python-url at phaseit.net (Simon Brunning)
Date: Tue, 31 May 2005 15:13:06 +0000
Subject: Dr. Dobb's Python-URL! - weekly Python news and links (May 31)
Message-ID: <mailman.319.1117626946.18027.python-announce-list@python.org>

QOTW: "Not tested but confident should be an oxymoron for a
programmer." - Peter Otten

(Asked "Is this unsurprising if I look at it right?") -  "Yes; in
general this is true across many domains for a very large number of
referents of "it" :-)" - John Machin

"Strong typing means there [are] a lot of variables whose names are
in ALL CAPS." - Paul Rubin


    One common Python "gotcha" is that default argument values are
    only evaluated once, at function definition time. David Isaac
    wanted to know where the values are stored:
        http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/b09b4e9a78162261
        
    A new era in Python package management?
        http://dirtsimple.org/2005/05/easyinstall-new-era-in-python-package.html
        
    Markus would like to limit his Python script to a fixed percentage of
    CPU usage:
        http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/17f108407779536a
        
    How do you drive-by-wire a car using Python? The Pegasus Team is
    doing some very cool stuff with Python - but I'd want to see their
    test results before going within a mile of the thing.
        http://pegasusbridge.blogspot.com/2005/05/how-do-you-drive-by-wire-car-using.html
        
    Michael Smith wanted to check poker-dice rolls to see if they were a
    full house. Raymond Hettinger gives him general purpose card hand
    detection code:
        http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/1eb194f0547c0c49
        
    George asks for help with a regexp to do quoted string parsing, then
    is shown the light, and uses PyParsing instead.
        http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/7756f2cca64a5def
        
    Fuzzyman tells us how to build a Movable Python CD - that is, Python
    that you can run straight off the CD without any installation - with
    a custom set of packages:
        http://www.voidspace.org.uk/python/weblog/arch_d7_2005_05_21.shtml#e48
        
    Why is Python case-sensitive? Because mathematical notation is,
    apparently:
        http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/6cd17bbab3d8ae80
        
    Mark Williamson has difficulty generating API documentation.  Python
    still needs a javadoc analogue that doesn't import code, it seems:
        <http://www.pagefall.com/musings/2005/05/27/twisted,python,documentation,arrggh!>
        
    Gabor would like to be able to write to a single text file from
    multiple processes simultaneously. This is hard.
        http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/475d065fa7871e63
        
    Eval is unsafe at any speed. Duncan Booth takes on all comers and
    shows that you can do dangerous things with eval regardless of
    attempts to make it safe:
        http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/cbcc21b95af0d9cc
        
    Notable releases:
        Twisted 2.0.1
            http://twistedmatrix.com/
        wxPython 2.6.0.1
            http://wxpython.org/
        IPython 0.6.14
            http://ipython.scipy.org/


========================================================================
Everything Python-related you want is probably one or two clicks away in
these pages:

    Python.org's Python Language Website is the traditional
    center of Pythonia
        http://www.python.org
    Notice especially the master FAQ
        http://www.python.org/doc/FAQ.html

    PythonWare complements the digest you're reading with the
    marvelous daily python url
         http://www.pythonware.com/daily  
    Mygale is a news-gathering webcrawler that specializes in (new)
    World-Wide Web articles related to Python.
         http://www.awaretek.com/nowak/mygale.html 
    While cosmetically similar, Mygale and the Daily Python-URL
    are utterly different in their technologies and generally in
    their results.

    For far, FAR more Python reading than any one mind should
    absorb, much of it quite interesting, several pages index
    much of the universe of Pybloggers.
	http://lowlife.jp/cgi-bin/moin.cgi/PythonProgrammersWeblog
        http://www.planetpython.org/
        http://mechanicalcat.net/pyblagg.html

    comp.lang.python.announce announces new Python software.  Be
    sure to scan this newsgroup weekly.
        http://groups.google.com/groups?oi=djq&as_ugroup=comp.lang.python.announce

    Steve Bethard, Tim Lesher, and Tony Meyer continue the marvelous
    tradition early borne by Andrew Kuchling, Michael Hudson and Brett
    Cannon of intelligently summarizing action on the python-dev mailing
    list once every other week.
	http://www.python.org/dev/summary/

    The Python Package Index catalogues packages.
        http://www.python.org/pypi/

    The somewhat older Vaults of Parnassus ambitiously collects references
    to all sorts of Python resources.
        http://www.vex.net/~x/parnassus/   

    Much of Python's real work takes place on Special-Interest Group
    mailing lists
        http://www.python.org/sigs/

    The Python Business Forum "further[s] the interests of companies
    that base their business on ... Python."
	http://www.python-in-business.org

    Python Success Stories--from air-traffic control to on-line
    match-making--can inspire you or decision-makers to whom you're
    subject with a vision of what the language makes practical.
        http://www.pythonology.com/success

    The Python Software Foundation (PSF) has replaced the Python
    Consortium as an independent nexus of activity.  It has official
    responsibility for Python's development and maintenance. 
        http://www.python.org/psf/
    Among the ways you can support PSF is with a donation.
        http://www.python.org/psf/donate.html

    Kurt B. Kaiser publishes a weekly report on faults and patches.
        http://www.google.com/groups?as_usubject=weekly%20python%20patch
       
    Cetus collects Python hyperlinks.
        http://www.cetus-links.org/oo_python.html

    Python FAQTS
        http://python.faqts.com/

    The Cookbook is a collaborative effort to capture useful and
    interesting recipes.
	http://aspn.activestate.com/ASPN/Cookbook/Python

    Among several Python-oriented RSS/RDF feeds available are
	http://www.python.org/channews.rdf
	http://bootleg-rss.g-blog.net/pythonware_com_daily.pcgi
	http://python.de/backend.php
    For more, see
	http://www.syndic8.com/feedlist.php?ShowMatch=python&ShowStatus=all
    The old Python "To-Do List" now lives principally in a
    SourceForge reincarnation.
        http://sourceforge.net/tracker/?atid=355470&group_id=5470&func=browse
        http://python.sourceforge.net/peps/pep-0042.html
     
    The online Python Journal is posted at pythonjournal.cognizor.com.
    editor at pythonjournal.com and editor at pythonjournal.cognizor.com
    welcome submission of material that helps people's understanding
    of Python use, and offer Web presentation of your work.

    del.icio.us presents an intriguing approach to reference commentary.
    It already aggregates quite a bit of Python intelligence.
        http://del.icio.us/tag/python

    *Py: the Journal of the Python Language*
        http://www.pyzine.com

    Archive probing tricks of the trade:
        http://groups.google.com/groups?oi=djq&as_ugroup=comp.lang.python&num=100
        http://groups.google.com/groups?meta=site%3Dgroups%26group%3Dcomp.lang.python.*

Previous - (U)se the (R)esource, (L)uke! - messages are listed here:
  http://www.ddj.com/topics/pythonurl/ (requires subscription)
  http://groups-beta.google.com/groups?q=python-url+group:comp.lang.python*&start=0&scoring=d&
  http://purl.org/thecliff/python/url.html (dormant)
or
  http://groups.google.com/groups?oi=djq&as_q=+Python-URL!&as_ugroup=comp.lang.python


Suggestions/corrections for next week's posting are always welcome.
E-mail to <Python-URL at phaseit.net> should get through.

To receive a new issue of this posting in e-mail each Monday morning
(approximately), ask <claird at phaseit.net> to subscribe.  Mention
"Python-URL!".


-- The Python-URL! Team--

Dr. Dobb's Journal (http://www.ddj.com) is pleased to participate in and
sponsor the "Python-URL!" project.




From louisREMOVEberkREMOVE2002 at hotmail.REMOVEcom  Sun May 15 05:49:19 2005
From: louisREMOVEberkREMOVE2002 at hotmail.REMOVEcom (LouisB)
Date: Sun, 15 May 2005 09:49:19 GMT
Subject: Jesus said, "I am the way,
	the truth and the life: no one can come to the Father(God)(in Heaven),
	but by me." (John 14:6) This means that if you die without trusting in
	Jesus Christ as your Lord and Saviour you will die in your sins
	and be forever sepa
References: <1116096706.696830.275140@g44g2000cwa.googlegroups.com>
Message-ID: <zWEhe.49792$Jc5.24182@fe1.news.blueyonder.co.uk>

hum a few bars and I'll try to pick it up....

<RonaldGrossi3848 at yahoo.com> wrote in message 
news:1116096706.696830.275140 at g44g2000cwa.googlegroups.com...
> http://www.gotquestions.org/sinners-prayer.html << I saw this site on a
> search directory. Great Resource!
> 




From wuwei23 at gmail.com  Wed May 25 21:29:38 2005
From: wuwei23 at gmail.com (alex23)
Date: 25 May 2005 18:29:38 -0700
Subject: Using properties
References: <1117029966.799908.183830@f14g2000cwb.googlegroups.com>
	<42949ca2$0$6501$636a15ce@news.free.fr>
	<1117041254.820429.306500@g49g2000cwa.googlegroups.com>
Message-ID: <1117070978.488855.252890@g43g2000cwa.googlegroups.com>

tkpmep at hotmail.com wrote:
> Thanks for the help. I now understand it better. As Bruno points out, I
> really don't need a property in this case, as my attribute is public,
> and I will remove it.

Should you need it to be a property at a latter date, it's worth noting
that you can achieve what you were initially after by wrapping the
property's get/set around the objects '__dict__' attribute:

    def getname(self): return self.__dict__['name']
    def setname(self): self.__dict__['name'] =newname

Hope this helps.

-alex23



From glennpierce at connectfree.co.uk  Wed May 11 08:41:22 2005
From: glennpierce at connectfree.co.uk (Glenn Pierce)
Date: Wed, 11 May 2005 13:41:22 +0100
Subject: libraries with distutils
Message-ID: <4281FD72.7050902@connectfree.co.uk>

Hi I have a question about writing a portable setup.py script for distutils.

I have a directory structure like this.

FreeImage/
          |----------Source/
          |                    |------ FreeImage.h
          |
          |----------Dist/
          |                    |------FreeImage.lib
          |                    |------FreeImage.dll
          |
          |----------Wrapper/
                               |---------Python/
                                                   |----------build/
                                                   |
                                                   
|----------freeimagemodule.c
                                                   |----------setup.py



I want to create a setup file that works on both unix and Windows but I 
am having trouble with windows.
My setup.py file is like the following:

from distutils.core import setup, Extension

ext_module = Extension('freeimagewrapper',
                    define_macros = [('MAJOR_VERSION', '3'),
                                     ('MINOR_VERSION', '7')],
                    include_dirs = ['../../Source/'],
                    library_dirs=['../../Dist/'],
                    libraries = ['FreeImage'],     
                    sources = ['freeimagemodule.c'])

setup (name = 'freeimage',
       version = '1.0',
       author = 'Glenn Pierce',
       description = 'Python wrapper for the freeimage library',
       ext_modules = [ext_module])


I am getting link errors as vs can't seem to find ../../Dist/FreeImage.lib

The output is

running build
running build_ext
building 'freeimagewrapper' extension
C:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\bin\link.exe /DLL 
/nologo
 /INCREMENTAL:NO /LIBPATH:../../Dist/ "/LIBPATH:C:\Program 
Files\Python24\libs"
"/LIBPATH:C:\Program Files\Python24\PCBuild" FreeImage.lib 
/EXPORT:initfreeimage
wrapper build\temp.win32-2.4\Release\freeimagemodule.obj 
/OUT:build\lib.win32-2.
4\freeimagewrapper.pyd 
/IMPLIB:build\temp.win32-2.4\Release\freeimagewrapper.lib

The errors are like

 Creating library build\temp.win32-2.4\Release\freeimagewrapper.lib and 
object
build\temp.win32-2.4\Release\freeimagewrapper.exp
freeimagemodule.obj : error LNK2019: unresolved external symbol 
_FreeImage_Unloa
d referenced in function _destroy

Also I guess when the python module is installed it will still need to 
find FreeImage.dll in a libray path searched by the system or will 
distutils place the actual dll and lib files where thay can be found ?

I have read the distutils guide but wasn't clear on the library section 
for ext modules.

Thanks for any help.

Glenn



From lsumnler at uniqueinsuranceco.com  Mon May 30 08:35:31 2005
From: lsumnler at uniqueinsuranceco.com (LenS)
Date: 30 May 2005 05:35:31 -0700
Subject: Newbie learning OOP 2nd ?
Message-ID: <1117456531.293218.134650@g44g2000cwa.googlegroups.com>

I have coded this little program which is a small little tip calculator
program.  I am in the process of trying to convert this program to use
OOP.  Would appreciate others more experienced in OOP code in how they
might do it.

Would be happy to forward all profits from the sale of the program;-))

#Program name:  tipcalc05.py
#This program calculates the dollar amount of a tip on a resturant bill
import datetime
import string

def calc_full_bill():
    '''This function is used to get information regarding the bill and
       calculate the tax, tip, and total amount of the bill'''
    global billamt
    global tippct
    global taxpct
    global totalbill

    billamt = raw_input("Please enter the bill amount: ")
    tippct = raw_input("Please enter the percent tip: ")
    location = getanswers("Are you in Chicago, ")

    if location == True:
        taxpct = 7.25
    else:
        taxpct = 6.75

    tipamt = calcpct(billamt, tippct)

    taxamt = calcpct(billamt, taxpct)

    totalbill = float(billamt) + taxamt + tipamt

    print "Tip = %.2f Tax = %.2f Total = %.2f" % (tipamt, taxamt,
totalbill)

def group_bill_process():
    grpbill = open("grpbill.txt", 'a+')
    group = raw_input("Please give the name of the group? ")

    for line in grpbill:
        print string.split(line, sep=',')

    who_paid = raw_input("Who paid the bill? ")
    grpdate = datetime.datetime.now()
    group_detail = group + ',' + who_paid + ',' + str(totalbill) + ','
+ str(grpdate) + '\n'
    grpbill.write(group_detail)

def calc_bill_by_guest():
    '''This function allows you to get multiple amounts for any number
       of individuals and calculate each individuals share of the tip
       tax and bill amount'''

    guest = []
    netbill = float(billamt)
    while True:
        gf_name = raw_input("Enter girlfriends name: ")
        gf_amt = raw_input("Enter girlfriends amount: ")
        guest.append((gf_name, gf_amt))
        netbill = netbill - float(gf_amt)
        print "Amount remaining %.2f" % netbill
        anymore = getanswers("Anymore girlfriends, ")
        if anymore == False:
            break

#these print lines are here just to show the tuples within a list

    print guest
    print

    for (g, a) in (guest):
        gf_tax = calcpct(a, taxpct)
        gf_tip = calcpct(a, tippct)
        gf_total = float(a) + gf_tax + gf_tip
        print "%s Tip = %.2f Tax = %.2f Total = %.2f" % (g, gf_tip,
gf_tax, gf_total)
        print

def getanswers(question):
    '''This function allows you to print some question looking for
       and answer of the form Yes or No'''
    answer = raw_input(question + "'Yes' or 'No': ")
    print
    if answer in ["Yes", "yes", "Y", "y", "OK", "ok", "Ok", "yeh",
"Yeh"]:
        return(True)
    else:
        return(False)

def calcpct(bill, pct):
    '''This function calculates the amount base off of some
       given percentage'''
    amt = float(bill) * float(pct) / 100
    return(amt)

while True:
    calc_full_bill()

    group_bill = getanswers("Is this a group bill? ")
    if group_bill == True:
        group_bill_process()
    else:
        split_the_bill = getanswers("Do you want to equally spilt the
Bill, ")
        if split_the_bill == True:
            no_of_dinners = raw_input("Split between how many people?
")
            print "Each person owes %.2f" % (float(totalbill) /
float(no_of_dinners))
        else:
            calc_bill_by_guest()

    runagain = getanswers("Do you want to run again, ")

    if runagain == False:
        break


PS If there is somewhere else I should be posting this kind of thing
let me know otherwise thanks everyone for your help.

Len Sumnler



From whoami_1972 at tom.com  Tue May 10 07:37:48 2005
From: whoami_1972 at tom.com (Whoami)
Date: Tue, 10 May 2005 19:37:48 +0800
Subject: Module on Getting the Date & Time
Message-ID: <20050510113753.10CDD1E4003@bag.python.org>

Simon Brunning,???


>>> import time
>>> current = time.time()
>>> time.localtime(current)
(2005, 5, 10, 19, 28, 14, 1, 130, 0)
>>> time.ctime(current)
'Tue May 10 19:28:14 2005'

======= 2005-05-10 19:09:42 ????????=======

>On 5/10/05, Sara Khalatbari <sarapythonlist at yahoo.com> wrote:
>> Is there a Modules in Python that returns the time &
>> date of today when ran?
>
>http://www.google.com/search?q=python+time+date
>
>-- 
>Cheers,
>Simon B,
>simon at brunningonline.net,
>http://www.brunningonline.net/simon/blog/
>-- 
>http://mail.python.org/mailman/listinfo/python-list
>

= = = = = = = = = = = = = = = = = = = =
			

?????????
??
 
				 
????????Whoami
????????whoami_1972 at tom.com
??????????2005-05-10


From dickrp at wckn.com  Sun May  1 19:06:51 2005
From: dickrp at wckn.com (Robert Dick)
Date: Sun, 1 May 2005 18:06:51 -0500
Subject: MRO problems with diamond inheritance?
In-Reply-To: <1114987828.055744.250090@z14g2000cwz.googlegroups.com>
References: <d53jqq$b88$1@newsg4.svr.pol.co.uk>
	<1114987828.055744.250090@z14g2000cwz.googlegroups.com>
Message-ID: <200505011806.51741.dickrp@wckn.com>

M.E.Farmer:
> Your answer lies somewhere in this page ;)
> http://www.python.org/2.2.2/descrintro.html
> M.E.Farmer

delegate.py (use PyPI) may also be useful.

-Robert Dick-


From lbates at syscononline.com  Mon May 16 15:19:03 2005
From: lbates at syscononline.com (Larry Bates)
Date: Mon, 16 May 2005 14:19:03 -0500
Subject: abut  COM using PythonCOM
In-Reply-To: <d6ansv$f8c$1@news.yaako.com>
References: <d6ansv$f8c$1@news.yaako.com>
Message-ID: <d9idnX_yqctpbBXfRVn-rg@comcast.com>

Yes code can be compiled with py2exe.  I then use Inno Installer
to create single setup.exe file that installs everything and
registers it for use.

Larry Bates

flyaflya wrote:
> I know using ActivePython can make a COM easily,but I wander how to
> distribute the COM,normal COM can  be installed by "regsvr32", but how
> to install  this  COM? and can the code be compiled by py2exe?


From jerf at jerf.org  Sat May  7 10:34:15 2005
From: jerf at jerf.org (Jeremy Bowers)
Date: Sat, 07 May 2005 10:34:15 -0400
Subject: Newbie: saving dialog variables
References: <mailman.147.1115486676.29826.python-list@python.org>
Message-ID: <pan.2005.05.07.14.34.12.711047@jerf.org>

On Sat, 07 May 2005 13:24:34 +0000, jeff elkins wrote:

> Howdy,
> 
> I've written a program that calls an imported dialog to gather some needed 
> input. What's the common method for passing that data back to the caller? I've 
> tried a 'return data' prior to self.Close() ... all that happens then is the 
> dialog won't close. I'm sure this is obvious, but this newbie's stuck!
> 
> Thanks,
> 
> Jeff

In general, the dialog is an instance of a class. Once the dialog closes,
the window should be gone but the instance variable should still be around. 
Common practice is to put the relevant data in the dialog instance member
for retrieval after closing. In certain cases, the method used to invoke
the dialog will return the relevant value, but this is somewhat limiting.
In even more rare cases, the dialog will be popped up by a function,
giving no direct reference to the dialog at any point, and the value is
returned by the function; this is generally limited to the "Yes/No/Cancel"
style dialog or its simpler bretheren ("OK/Cancel" and "OK").

I'm assuming that last one is not the case.

To be more directly helpful, we'd need more data, ideally a code snippet
fully demonstrating the problem (i.e., a runnable program). But at a bare
minimum, we'd need to know where this dialog came from. Tk? PyGTK?
wxPython? Some curses library? MFC?


From mefjr75 at hotmail.com  Mon May  2 19:01:26 2005
From: mefjr75 at hotmail.com (M.E.Farmer)
Date: 2 May 2005 16:01:26 -0700
Subject: Can't get compression in Python zip script.
In-Reply-To: <42769eec$1@nntp0.pdx.net>
References: <d55b11+flng@eGroups.com>
	<1115065046.071440.62630@z14g2000cwz.googlegroups.com>
	<mailman.48.1115065808.6583.python-list@python.org>
	<42769eec$1@nntp0.pdx.net>
Message-ID: <1115074498.091009.279740@l41g2000cwc.googlegroups.com>

Yea I get it now. I didn't realize that there where other possible
un-implemented compression methods. Fredrik's post enlightened me.
The problem was a false assumption  that compression=0 in the arguments
was == False seemed logical that compression=1 was True.
Sometimes things aren't logical till you see the full issue.
In plain english: I couldn't refuse the temptation to guess( and
guessed wrong ).
+1 on the bzip2
Thanks,
M.E.Farmer



From jedit at 126.com  Tue May 31 22:38:40 2005
From: jedit at 126.com (Owen)
Date: 31 May 2005 19:38:40 -0700
Subject: Rss lib in python?
Message-ID: <c68cb37c.0505311838.2a4d7b65@posting.google.com>

Hi all,

i want to know some rss library in python.For example, some for rss
readers, and some for generator.

Thanks for any information.

Owen.


From pinard at iro.umontreal.ca  Sun May  1 08:47:45 2005
From: pinard at iro.umontreal.ca (=?iso-8859-1?Q?Fran=E7ois?= Pinard)
Date: Sun, 1 May 2005 08:47:45 -0400
Subject: compare two voices
In-Reply-To: <1114928238.521134.101500@l41g2000cwc.googlegroups.com>
References: <1114916457.795332.45220@f14g2000cwb.googlegroups.com>
	<pan.2005.05.01.01.13.33.665804@jerf.org>
	<1114928238.521134.101500@l41g2000cwc.googlegroups.com>
Message-ID: <20050501124745.GA1188@phenix.progiciels-bpi.ca>

[Qiangning Hong]

> I just want to compare two sound WAVE file, not what the students or
> the teacher really saying.  For example, if the teacher recorded his
> "standard" pronouncation of "god", then the student saying "good" will
> get a higher score than the student saying "evil" ---- because "good"
> sounds more like "god".

If I had this problem and was alone, I would likely create one audiogram
(I mean a spectral frequency analysis over time) for each voice sample.
Normally, this is presented with frequency on the vertical axis, time on
the horizontal axis, and gray value for frequency amplitude.  There are
a few tools available for doing this, yet integrating them in another
application may require some work.

Now, because of voice pitch differences and elocution speed, the
audiograms would somehow look alike, yet scaled differently in both
directions.  The problem you now have is to recognise that an image is
"similar" to part of another, so here, I would likely do some research
on various transforms (like Hough's and any other of the same kind) that
might ease normalisation prior to comparison.  Image classification
techniques (they do this a lot in satellite imagery) for recognizing
similar textures in audiograms, and so, clues for matching images.  A
few image classification programs which have been previously announced
here, I did not look at them yet, but who knows, they may be helpful.

Then, if the above work is done correctly and meaningfully, you now want
to compute correlations between normalised audiograms.  More correlated
they are, more likely the original pronunciation were.

Now, if I had this problem and could call friends, I would surely phone
one or two of them, who work at companies offering voice recognition
devices or services.  They will be likely reluctant at sharing advanced
algorithms, as these give them industrial advantage over competitors.

> I try to use the value returned from rms(add(a, mul(b, -findfactor(a,
> b)))) as the score.  But the result is not good.

Oh, absolutely no chance that such a simple thing would ever work. :-)

-- 
Fran?ois Pinard   http://pinard.progiciels-bpi.ca


From lamthierry at gmail.com  Sun May  8 13:31:36 2005
From: lamthierry at gmail.com (lamthierry at gmail.com)
Date: 8 May 2005 10:31:36 -0700
Subject: Calling a python function from C++
Message-ID: <1115573496.595824.47970@f14g2000cwb.googlegroups.com>

Let's say I have a python function do some math like the following:

def doMath(self):
   self.val = self.val + 1


How can I call this python function from C++? Assuming I have some sort
of Python wrapper around my C++ codes.



From http  Tue May 17 06:56:31 2005
From: http (Paul Rubin)
Date: 17 May 2005 03:56:31 -0700
Subject: Windows distribution suggestions?
References: <7x3bsmfjdg.fsf_-_@ruckus.brouhaha.com>
	<7xekc6p9tp.fsf@ruckus.brouhaha.com>
	<4289ACD8.2070207@open-networks.net>
	<mailman.87.1116322349.8733.python-list@python.org>
Message-ID: <7x8y2ep1cw.fsf@ruckus.brouhaha.com>

Toby Dickenson <tdickenson at devmail.geminidataloggers.co.uk> writes:
> py2exe is working great for me too. 

I should give it a try.

> One tip: make sure your three top-level scripts are as empty as
> possible: just import some other module and call a function. All
> your active code is then in some library.zip shared between the
> three, and you need never change alice.exe, bob.exe, and carol.exe

I think I understand what you're saying and it sounds like a very
good idea.  Thanks.

> > use NSIS for the installer, it can do anything you want an  
> > it's free. it couldn't be more simple, shoot me an email if you
> > need more 
> 
> Ive not used NSIS, but I have had good results from the free WiX
> tools, at http://sourceforge.net/projects/wix/. Documentation is
> poor, but examples are plenty.

I'll look at these and at INNO (mentioned in another post).  Thanks
again to everyone.


From grante at visi.com  Tue May 10 20:05:01 2005
From: grante at visi.com (Grant Edwards)
Date: Wed, 11 May 2005 00:05:01 -0000
Subject: Python Args By Reference
References: <1115769308.136143.74080@f14g2000cwb.googlegroups.com>
Message-ID: <1182j1daaepv6f4@corp.supernews.com>

On 2005-05-10, ncf <nothingcanfulfill at gmail.com> wrote:

> Hello all, I was wondering if there was any way to pass arguments
> (integer and such) by reference (address of), rather than by value.

Yes.  All arguments are passed by reference.  This must be in
the FAQ somewhere...

Sure enough.  30 seconds of browsing the FAQ yielded this:

http://www.python.org/doc/faq/programming.html#how-do-i-write-a-function-with-output-parameters-call-by-reference

-- 
Grant Edwards                   grante             Yow!  Wow! Look!! A stray
                                  at               meatball!! Let's interview
                               visi.com            it!


From bac at OCF.Berkeley.EDU  Tue May 24 19:11:34 2005
From: bac at OCF.Berkeley.EDU (Brett C.)
Date: Tue, 24 May 2005 16:11:34 -0700
Subject: Localized Type Inference of Atomic Types in Python
Message-ID: <4293B4A6.8030002@ocf.berkeley.edu>

My thesis, "Localized Type Inference of Atomic Types in Python", was
successfully defended today for my MS in Computer Science at the California
Polytechnic State University, San Luis Obispo.  With that stamp of approval I
am releasing it to the world.  You can grab a copy at
http://www.drifty.org/thesis.pdf .

For those of you who attended my talk at PyCon 2005 this is the thesis that
stemmed from the presented data.

As of this exact moment I am not planning to release the source code mainly
because it's a mess, I am not in the mood to pull the patches together, and the
last thing I want happening is people finding mistakes in the code.  =)  But if
enough people request the source I will take the time to generate a tar.bz2
file of patches against the 2.3.4 source release and put them up somewhere.

Below is the abstract culled directly from the thesis itself.

-Brett C.

---------------------------------
ABSTRACT

Types serve multiple purposes in programming.  One such purpose is in providing
information to allow for improved performance.  Unfortunately, specifying the
types of all variables in a program does not always fit within the design of a
programming language.

Python is a language where specifying types does not fit within the language
design.  An open source, dynamic programming language, Python does not support
type specifications of variables.  This limits the opportunities in Python for
performance optimizations based on type information  compared to languages that
do allow or require the specification of types.

Type inference is a way to derive the needed type information for optimizations
based on types without requiring type specifications in the source code of a
program.  By inferring the types of variables based on flow control and other
hints in a program, the type information can be derived and used in a
constructive manner.

This thesis is an exploration of implementing a type inference algorithm for
Python without changing the semantics of the language.  It also explores the
benefit of adding type annotations to method calls in order to garner more type
information.


From bram at geenspam.sara.nl  Wed May 25 06:59:03 2005
From: bram at geenspam.sara.nl (Bram Stolk)
Date: Wed, 25 May 2005 12:59:03 +0200
Subject: IRIX MipsPro compiler chokes on Python.h
In-Reply-To: <ndf6915tcd9ash1hvitro7d3q0klhs120n@4ax.com>
References: <1116933601.457261@blaat.sara.nl>
	<ndf6915tcd9ash1hvitro7d3q0klhs120n@4ax.com>
Message-ID: <1117018743.382102@blaat.sara.nl>

Dennis Lee Bieber wrote:
> On Tue, 24 May 2005 13:20:01 +0200, Bram Stolk <bram at geenspam.sara.nl>
> declaimed the following in comp.lang.python:
> 
> 
>>$ cat l.cxx
> 
> 
> 	Isn't ".cxx" a "C++" indicator? I think Python is just plain C,
> so you'd have to wrap everything to indicate C style naming in the
> compiler output.

extern "C"
{
#include <Python.h>
}

...gives the same result.

   Bram

> 


From aahz at pythoncraft.com  Thu May 19 13:40:03 2005
From: aahz at pythoncraft.com (Aahz)
Date: 19 May 2005 10:40:03 -0700
Subject: Is Python suitable for a huge, enterprise size app?
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>
	<1116443474.565264.176640@g44g2000cwa.googlegroups.com>
	<7xd5rn93zi.fsf@ruckus.brouhaha.com>
	<mailman.198.1116493706.8733.python-list@python.org>
Message-ID: <d6ij1j$s96$1@panix3.panix.com>

In article <mailman.198.1116493706.8733.python-list at python.org>,
Fredrik Lundh <fredrik at pythonware.com> wrote:
>
>(this used to be explained in the Python FAQ too, but it looks as if that
>was lost in the great FAQ reorganization).

Send e-mail to webmaster at python.org -- actually, you can have commit
privs if you want.
-- 
Aahz (aahz at pythoncraft.com)           <*>         http://www.pythoncraft.com/

"The only problem with Microsoft is they just have no taste." --Steve Jobs


From michele.simionato at gmail.com  Mon May  2 05:10:31 2005
From: michele.simionato at gmail.com (Michele Simionato)
Date: 2 May 2005 02:10:31 -0700
Subject: MRO problems with diamond inheritance?
In-Reply-To: <d53jqq$b88$1@newsg4.svr.pol.co.uk>
References: <d53jqq$b88$1@newsg4.svr.pol.co.uk>
Message-ID: <1115025031.721431.76320@o13g2000cwo.googlegroups.com>

BTW, what it your use case? I have yet to see a single compelling use
case for multiple inheritance, so I am
curious of what your design is.

     Michele Simionato



From vincent at visualtrans.de  Sun May 29 04:17:11 2005
From: vincent at visualtrans.de (vincent wehren)
Date: Sun, 29 May 2005 10:17:11 +0200
Subject: need help of RE
References: <1117352350.179209.206930@z14g2000cwz.googlegroups.com>
Message-ID: <d7btq5$7g5$1@news3.zwoll1.ov.home.nl>


"cheng" <magicmas at spymac.com> schrieb im Newsbeitrag 
news:1117352350.179209.206930 at z14g2000cwz.googlegroups.com...
| hi all
| a string like
|
| "(word1 & (Word2|woRd3))"
|
| how can i use the re to split it to
|
| ['word1', 'word2', 'word3']
|

import re
s = "(word1 & (Word2|woRd3)"
parts = re.split('\W+', s)
print [p for p in parts if p]

--

Vincent Wehren 




From elrei69 at yahoo.es  Mon May 23 13:22:10 2005
From: elrei69 at yahoo.es (Ximo)
Date: Mon, 23 May 2005 19:22:10 +0200
Subject: execution error
Message-ID: <3fehq6F7flfgU1@individual.net>

Hello, I'm programing an advanced calculator, and I have many problems with 
the execution errors, specually with the division by 0.

And my question is how can show the execution error whitout exit of the 
program, showing it in the error output as

>>2+2
>>4
>>3*4
>>12
>>6/0
>>"Error: Division per 0"

Thank you. 




From root at pansegroup.com  Mon May 23 11:25:33 2005
From: root at pansegroup.com (www.pansegroup.com PostMaster)
Date: Mon, 23 May 2005 20:55:33 +0530
Subject: Error sending message [1116860878726.2800.mailserver_papl] from
	[www.pansegroup.com]
Message-ID: <20050524033001.83C972DD71D@smtp4.smtp4u.com>

[<00>] V-POP3bounce: Rcpt=[joe at pansegroup.com];Error=[550 Error: Invalid Attachment]


[<01>] Error sending message [1116860878726.2800.mailserver_papl] from [www.pansegroup.com].

ID:        <SB208>
Mail From: <python-list at python.org>
Rcpt To:   <joe at pansegroup.com>
Server:    <smtp4.smtp4u.com> [209.120.245.170]


[<02>] The reason of the delivery failure was:

550 Error: Invalid Attachment


[<05>] Here is listed the initial part of the message:

Received: from python.org (192.168.1.130:4513)
	by smtp.pansegroup.com with [V-POP3Mail (Win32/Ix86) ESMTP Server]
	id <SB208> for <joe at pansegroup.com> from <python-list at python.org>;
	Mon, 23 May 2005 20:37:58 +0530
From: python-list at python.org
To: joe at pansegroup.com
Subject: MAIL TRANSACTION FAILED
Date: Mon, 23 May 2005 20:37:36 +0530
MIME-Version: 1.0
Content-Type: multipart/mixed;
	boundary="----=_NextPart_000_0012_6513DF42.EC70CFD3"
X-Priority: 3
X-MSMail-Priority: Normal



From simon.brunning at gmail.com  Thu May 26 08:12:38 2005
From: simon.brunning at gmail.com (Simon Brunning)
Date: Thu, 26 May 2005 13:12:38 +0100
Subject: how to convert string to list or tuple
In-Reply-To: <d74dbl$h91$1@news.yaako.com>
References: <d74dbl$h91$1@news.yaako.com>
Message-ID: <8c7f10c60505260512189374a9@mail.gmail.com>

On 5/26/05, flyaflya <flyaflya at gmail.com> wrote:
> a = "(1,2,3)"
> I want convert a to tuple:(1,2,3),but tuple(a) return ('(', '1', ',',
> '2', ',', '3', ')') not (1,2,3)

Short answer - use eval().

Long answer - *don't* use eval unless you are in control of the source
of the string that you are evaluating.

-- 
Cheers,
Simon B,
simon at brunningonline.net,
http://www.brunningonline.net/simon/blog/


From cjbottaro at alumni.cs.utexas.edu  Wed May 25 16:00:15 2005
From: cjbottaro at alumni.cs.utexas.edu (Christopher J. Bottaro)
Date: Wed, 25 May 2005 15:00:15 -0500
Subject: Python analog of Ruby on Rails?
References: <mailman.100.1117039885.18027.python-list@python.org>
	<4294adc3$0$2526$626a14ce@news.free.fr>
Message-ID: <d72lcc$7id$1@sea.gmane.org>

bruno modulix wrote:

> Christopher J. Bottaro wrote:
>> Hello fellow Pythonists,
>>   Is there such a thing?
> 
> As what ?
> Oops, sorry, the question is in the subject... May be helpful to repeat
> it in the body.
> 
> You may want to have a look at Subway

Cool, that looks like what I'm looking for, thanks.

>> My work is thinking of maybe experimenting with
>> Ruby on Rails for some lesser projects.  Naturally, I wonder if Python
>> can do as good a job or better...
> 
> Doing 'as good or better' does not mean 'doing the same'.

Hmm.

Cool signature, can anyone do a Python one that I can leech?  =)

-- C



From sw at wordtech-software.com  Tue May 31 21:20:40 2005
From: sw at wordtech-software.com (Kevin Walzer)
Date: Tue, 31 May 2005 21:20:40 -0400
Subject: Questions on using Qt or wxWindows with Python and OS X
In-Reply-To: <mailman.272.1117519851.18027.python-list@python.org>
References: <mailman.272.1117519851.18027.python-list@python.org>
Message-ID: <19a11$429d0d6f$4275d90a$6752@FUSE.NET>

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

I maintain a lot of wxPython and PyQt packages for OS X: in fact, I
released the first generally available binary installer for PyQt on the
Mac. I'm not at an advanced level with either toolkit, but here's my two
cents:

1. Both are robust in the sense of being powerful, fairly comprehensive
toolkits. You probably know that already, but in terms of Python
development on the Mac, either is a viable choice.

2. In terms of developer resources, I'd say that wxPython is clearly
farther along on the Mac. There are more users, more informal
documentation (in terms of tutorials, wikis, etc., especially for
Mac-specific issues), more active development from a hands-on core of
developers, and so on. wxPython also has the advantage of looking
completely native, as it wraps the native Aqua widgets. The wxPython-OS
X package has been a bit buggy in the past, but now at 2.6.0 I'd say
it's very strong.

3. With PyQt, you're more in the wilderness. The Mac community is *very*
small, and as such there's a lot of uncharted territory in terms of
documentation, best practices, etc. The most lively community for PyQt
is, not surprisingly, based on Linux; you'll find mailing lists and lots
of online tutorials geared for Linux. Supporting the Mac also isn't the
main priority for the chief developer of PyQt. I'm not an experienced
enough Python developer to add much to PyQt per se: I released the
binary package simply because I had some experience building Qt apps,
wanted to try PyQt anyway, and figured it would be a useful service to
become the de-facto Mac maintainer.

Another drawback to PyQt is that Qt apps, in general, don't look as
native as wxPython. The differences are subtle but they are noticable.

Even with these cautios, PyQt runs very well on the Mac, and I've built
a few PyQt applications that ran with no modification on my part.
wxPython apps require some hacks to get all the Mac gui conventions
right (i.e. the help menu, about menu, etc.)  This is a testament to the
fact that, at its core, Qt is a very well-designed and documented toolkit.

My personal preference is for wxPython, as it just fits my brain better.
Qt's "signals and slots" approach is, for me, counterintuitive. But I'll
~ continue to support PyQt as long as there's a need for it.

If you want more information, see my software site:
http://www.wordtech-software.com/python.html

I've also done a lot of discussion of Python development on the Mac at
my blog:

http://www.kevin-walzer.com

Hope this helps.

Kenneth McDonald wrote:
| If this is not an appropriate newsgroup for this type of posting,
| please let me know and (if possible) suggest an alternative. I've
| done a fair bit of research on the net, but information is scattered
| all over the place and I haven't been able to find mailing lists
| relating specifically to python and UIs.
|
| I'd like to start using Python for some GUI programming again. I'd
| like to use Tk, but it seems to be dying a slow death, so it's
| probably time to look at wxPython and PythonQt.
|
| I'd appreciate any comments on the relevant merits of these two
| libraries, both with respect to Python and more generally. I know
| about the differences in licensing, that's not an issue. My most
| specific concerns are ease of use (which includes how much in the way
| of documentation or examples for using through Python are available,
| and how easy the Python libs are to use in each case); availability of
| a generally capable styled text widget, as one of the things I need to
| build is an editor, which needs to be able to handle different fonts,
| styles, tabs, and so forth; and ease of installation on a Macintosh,
| since that is my preferred dev platform, and installing things made
| for other UNIX variants can be a little wonky at times.
|
| I'm also curious as to the quality of documentation available for
| wxPython and wxWindows, and any differences between the
| wxWindows text widget (which is generally Scintilla I believe),
| and the Qt text widget classes. I've had a hard time finding good
| docs for wxWindows or wxPython, and the bit of documentation
| on Scintilla I've found and read seems to indicate that it has some
| restrictions, such as needing to use the same line height for all lines
| regardless of content.
|
| Many thanks for any feedback you can give.
|
|
| Cheers,
| Ken


- --
Cheers,

Kevin Walzer, PhD
WordTech Software--Open Source Applications and Packages for OS X
http://www.wordtech-software.com
http://www.kevin-walzer.com
mailto:sw at wordtech-software.com
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From flyaflya at gmail.com  Mon May 16 14:13:54 2005
From: flyaflya at gmail.com (flyaflya)
Date: Tue, 17 May 2005 02:13:54 +0800
Subject: abut  COM using PythonCOM
Message-ID: <d6ansv$f8c$1@news.yaako.com>

I know using ActivePython can make a COM easily,but I wander how to 
distribute the COM,normal COM can  be installed by "regsvr32", but how 
to install  this  COM? and can the code be compiled by py2exe?


From luismgz at gmail.com  Sun May 15 23:52:33 2005
From: luismgz at gmail.com (Neuruss)
Date: 15 May 2005 20:52:33 -0700
Subject: installing mod_python with python 2.4 on Windows xp
Message-ID: <c56b627e.0505151952.447670ee@posting.google.com>

I need help with this issue.
All my attempts to get it up and running failed, and the documentation
I found so far didn't help me at all.

I'm trying to configure this components together:

- Apache 2.0.53
- mod_python 3.2.0 dev 2005 0428 win32-p v2.4
- python 2.4

The above version of mod_python binary is the most up to date I could
get, but I don't know how stable it is.
I'd like to know if anyone succeded installing mod_python and, if so,
what configuration used in httpd.conf.

Any information would be highly appreciated...
Thanks!

LUIS


From andy at andybak.net  Mon May  2 17:30:39 2005
From: andy at andybak.net (andy at andybak.net)
Date: 2 May 2005 14:30:39 -0700
Subject: Quick and dirty dialogs?
In-Reply-To: <1115060674.394516.82000@o13g2000cwo.googlegroups.com>
References: <mailman.42.1115059895.6583.python-list@python.org>
	<1115060674.394516.82000@o13g2000cwo.googlegroups.com>
Message-ID: <1115069439.089372.281540@l41g2000cwc.googlegroups.com>

Stopped being lazy and found the TK answer myself. (it needs some extra
stuff installed. see the macpython site's faq for info). Still be
interested to know if there is a sem-cross-platform solution to simple
dialogs that doesn't need TK...



From curi at curi.us  Sun May 29 03:51:23 2005
From: curi at curi.us (Elliot Temple)
Date: Sun, 29 May 2005 00:51:23 -0700
Subject: need help of RE
In-Reply-To: <1117352350.179209.206930@z14g2000cwz.googlegroups.com>
References: <1117352350.179209.206930@z14g2000cwz.googlegroups.com>
Message-ID: <399F1E1E-C009-4638-B3E8-F376DFE71E38@curi.us>


On May 29, 2005, at 12:39 AM, cheng wrote:

> hi all
> a string like
>
> "(word1 & (Word2|woRd3))"
>
> how can i use the re to split it to
>
> ['word1', 'word2', 'word3']

Could you be more exact about what the string is like?  Does it  
literally contain the characters '&' and '|' ?  If so, just split at  
them.

-- Elliot Temple
http://www.curi.us/


---
[This E-mail scanned for viruses by Declude Virus]



From simonwittber at gmail.com  Tue May 31 03:34:39 2005
From: simonwittber at gmail.com (simonwittber at gmail.com)
Date: 31 May 2005 00:34:39 -0700
Subject: pickle alternative
In-Reply-To: <pan.2005.05.31.07.11.10.818637@dalkescientific.com>
References: <1117520276.417970.207680@g14g2000cwa.googlegroups.com>
	<pan.2005.05.31.07.11.10.818637@dalkescientific.com>
Message-ID: <1117524878.988878.181820@g44g2000cwa.googlegroups.com>

> For simple data types consider "marshal" as an alternative to "pickle".

>From the marhal documentation:
Warning: The marshal module is not intended to be secure against
erroneous or maliciously constructed data. Never unmarshal data
received from an untrusted or unauthenticated source.

> BTW, your code won't work on 64 bit machines.

Any idea how this might be solved? The number of bytes used has to be
consistent across platforms. I guess this means I cannot use the struct
module?

> There's no need to compute str(long) twice -- for large longs
> it takes a lot of work to convert to base 10.  For that matter,
> it's faster to convert to hex, and the hex form is more compact.

Thanks for the tip.

Sw.



From mf1987 at arcor.de  Sat May 21 07:30:51 2005
From: mf1987 at arcor.de (mmf)
Date: 21 May 2005 04:30:51 -0700
Subject: Problem: embedding Python
Message-ID: <1116675051.879539.116840@g43g2000cwa.googlegroups.com>

Hallo!

I tried to use Python from C like it is described in the Python
Docmentation. So I wrote the following C source file:

#include <Python.h>
int
main(int argc, char *argv[])
{
	Py_Initialize();
	PyRun_SimpleString("print 'Hallo World!'\n");
	Py_Finalize();
	return 0;
}

I saved it as run.c and tried to compile it using the following
command:
gcc  run.c

But that always results in a list of errors:

/tmp/cc1tmrPU.o(.text+0x1d): In function `main':
: undefined reference to `Py_Initialize'
/tmp/cc1tmrPU.o(.text+0x2a): In function `main':
: undefined reference to `PyRun_SimpleString'
/tmp/cc1tmrPU.o(.text+0x32): In function `main':
: undefined reference to `Py_Finalize'

What am I doing wrong? Can you help me?

Tanks.

Best regards,
Markus



From steven.bethard at gmail.com  Tue May 10 16:22:51 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Tue, 10 May 2005 14:22:51 -0600
Subject: A Faster Way...
In-Reply-To: <mailman.297.1115744017.29826.python-list@python.org>
References: <mailman.297.1115744017.29826.python-list@python.org>
Message-ID: <4PqdnQDcgMO9hRzfRVn-tg@comcast.com>

andrea.gavana at agip.it wrote:
> If I simplify the problem, suppose I have 2 lists like:
> 
> a = range(10)
> b = range(20,30)
> 
> What I would like to have, is a "union" of the 2 list in a single tuple. In
> other words (Python words...):
> 
> c = (0, 20, 1, 21, 2, 22, 3, 23, 4, 24, 5, 25, .....

py> a = range(10)
py> b = range(20,30)
py> [x for tup in zip(a, b) for x in tup]
[0, 20, 1, 21, 2, 22, 3, 23, 4, 24, 5, 25, 6, 26, 7, 27, 8, 28, 9, 29]

HTH,

STeVe


From Scott.Daniels at Acm.Org  Mon May  9 20:28:46 2005
From: Scott.Daniels at Acm.Org (Scott David Daniels)
Date: Mon, 09 May 2005 17:28:46 -0700
Subject: Advice needed on __del__
In-Reply-To: <mailman.232.1115672394.29826.python-list@python.org>
References: <d5o1s1$8h3$1@sea.gmane.org> <d5obmp$cqh$1@sea.gmane.org>
	<mailman.232.1115672394.29826.python-list@python.org>
Message-ID: <427ffa0d$1@nntp0.pdx.net>

Andr? Roberge wrote:
> ...  Each time I refresh the screen, I could
> force that call, then check to see if Evil has been
> destroyed by Python, which would give me the information
> I need to destroy Evil_twin behind the scene myself -
> which is what I am really after.

What might work is to keep a weakref to Evil in Evil_twin.
Upon refresh, you could check if the weakref has gone stale.
Is that good enough?


--Scott David Daniels
Scott.Daniels at Acm.Org


From cjbottaro at alumni.cs.utexas.edu  Wed May 11 16:42:49 2005
From: cjbottaro at alumni.cs.utexas.edu (Christopher J. Bottaro)
Date: Wed, 11 May 2005 15:42:49 -0500
Subject: Python Documentation (should be better?)
References: <mailman.389.1115837608.29826.python-list@python.org>
	<1115839271.271071.32710@z14g2000cwz.googlegroups.com>
	<mailman.393.1115840571.29826.python-list@python.org>
	<1115841659.470657.33320@o13g2000cwo.googlegroups.com>
Message-ID: <d5tq9s$d8l$1@sea.gmane.org>

S?bastien Boisg?rault wrote:

> 
> "Manual" == scope of the *Lib Reference* + informal style of the
> *Tutorial*,
> 
> Right ?

Yes!  That sounds good.  "Informal style" yes, but "tutorial style" no.  I
shouldn't be there to teach like the tutorial, but for reference.  And of
course, the manual shouldn't cover the modules like the lib reference does,
but just the language itself and "built in" types.

Ok, here is a concrete example of what I like about the PHP manual and what
people I know have had a hard time with Python.  Go to the PHP manual page. 
Type "array" in the search input field.  It comes back with a page that
briefly describes arrays in PHP and then lists all the functions that have
to do with arrays.

Contrast that with Python.  First off there is no "search" mechanism built
into the documentation page (yes I know you can google it, but that just
doesn't feel right).  Second off...well, my argument sucks because I
apparently I haven't looked at the Python tutorial recently.  But before,
if you looked up "lists" in the tutorial, you got a tutorial style page on
them.  If you wanted to see their methods, you had to completely back out
of the tutorial, go to the library reference, then find the section on
"mutable sequences".  How unintuitive is that?  But like I said, the
tutorial is better now.  It lists the methods on list and there is a link
in the dictionary section to the "mapping types" section in the library
reference.

Oh well, I guess all is well.

-- C

> Consider non-official manuals such as:
>     + http://diveintopython.org/toc/index.html (free)
>     + python in a nutshell
>     + python cookbook
>     + etc.
> 
> Cheers,
> 
> SB
> 




From rkern at ucsd.edu  Sat May 28 17:31:51 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Sat, 28 May 2005 14:31:51 -0700
Subject: scipy for python 2.4
In-Reply-To: <1117314382.677584.133160@o13g2000cwo.googlegroups.com>
References: <1117314382.677584.133160@o13g2000cwo.googlegroups.com>
Message-ID: <d7anrq$81e$1@sea.gmane.org>

querypk at gmail.com wrote:
> Did anyone try to install Scipy package on python2.4 linux version. I
> see only python2.3 version of scipy released. When I try to install I
> get an dependency warning saying scipy cannot find python2.3.
> 
> Can someone point me to python2.4 version of scipy and help me install.

scipy.org has not yet released binaries for Python 2.4. It will compile 
from source just fine, though. Someone may have also released binary 
packages for your particular platform, but since you don't mention which 
one that is, we can't help you with that, yet.

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From cpl.19.ghum at spamgourmet.com  Tue May 17 01:31:50 2005
From: cpl.19.ghum at spamgourmet.com (Harald Massa)
Date: Tue, 17 May 2005 05:31:50 +0000 (UTC)
Subject: query progress bar
References: <mailman.65.1116284481.8733.python-list@python.org>
	<1116286913.207477.219180@g44g2000cwa.googlegroups.com>
	<mailman.69.1116288978.8733.python-list@python.org>
Message-ID: <Xns96594C9E0960cpl19ghumspamgourmet@195.20.224.116>

> it's for wx, the problem isn't making the progress bar itself, it's 
> knowing how long the query is going to run for.
> i'm using pypgsql

It is quite easy:

from timemachine import oracle

guesser=oracle(guess="SQL")
guesser.set_hint(driver="pypgsql")
guesser.set_hint(gui="wx")

expected_runtime=guesser.estimate("<put your query text here>")

Only problem is that the timemachine module is currently only installed 
on Guidos and Tims Python.

Harald


From t-meyer at ihug.co.nz  Wed May 25 22:38:23 2005
From: t-meyer at ihug.co.nz (Tony Meyer)
Date: Thu, 26 May 2005 14:38:23 +1200
Subject: Checking for a full house
In-Reply-To: <ECBA357DDED63B4995F5C1F5CBE5B1E802F3183F@its-xchg4.massey.ac.nz>
Message-ID: <ECBA357DDED63B4995F5C1F5CBE5B1E801B0F754@its-xchg4.massey.ac.nz>

[Tony Meyer]
>> def isfullHouse(roll):
>>     return len(set(roll)) != 2

[Robert Kern]
> [1, 1, 1, 1, 2] is not a full house.

Opps.  I did say it was untested (that should have been == not !=, too).
What about:

def isfullHouse(roll):
    return len(set(roll)) == 2 and roll.count(min(roll)) != 1 and
roll.count(max(roll)) != 1

Although your solution looks a lot nicer than this (though it may use more
memory, and might be slower).

=Tony.Meyer



From joeyjwc at gmail.com  Tue May 31 15:17:21 2005
From: joeyjwc at gmail.com (Joey C.)
Date: 31 May 2005 12:17:21 -0700
Subject: Stupid Newbie Question Concerning CGI and Reading Forward Slashes
In-Reply-To: <mailman.282.1117538756.18027.python-list@python.org>
References: <1117533288.097148.134270@g14g2000cwa.googlegroups.com>
	<mailman.282.1117538756.18027.python-list@python.org>
Message-ID: <1117567041.941039.103380@g14g2000cwa.googlegroups.com>

Steve Holden wrote:
> It's not a common question, but it's relatively easily answered. You are
> splitting everything but the filename off with os.path.split and then
> complaining about the result! Once you stop doing that your problem is
> solved.

Thus, it's a stupid newbie question.  Thanks a lot for your help.  It
seems I was just being plain stupid.



From duncan.booth at invalid.invalid  Tue May 31 04:46:56 2005
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 31 May 2005 08:46:56 GMT
Subject: how to convert string to list or tuple
References: <d74dbl$h91$1@news.yaako.com>
	<mailman.131.1117109560.18027.python-list@python.org>
	<1117383768.099922.308760@o13g2000cwo.googlegroups.com>
	<Xns9665B54CBAA38duncanbooth@127.0.0.1>
	<KpKdnfZemtzivwffRVn-sA@comcast.com>
	<Xns96666DCDF2C19duncanbooth@127.0.0.1>
	<WvWdneCvReWQowbfRVn-sw@comcast.com>
Message-ID: <Xns966761E4E4665duncanbooth@127.0.0.1>

Steven Bethard wrote:

> Duncan Booth wrote:
>> any new style class you have defined and call any of its methods with
>> whatever arguments I wish.
> 
> Any new style class that I've defined?  Or just any one I pass in as 
> part of dict(__builtins__=None, ...)?  If the former, could you 
> elaborate?  If the latter, then yes, I can see the problem.  However
> for the case where all you pass in is dict(__builtins__=None), is
> there still a risk?  Note that in the OP's case, all that is necessary
> is constant parsing, so no names need to be available.
> 
Any new style class you have defined is accessible through 
object.__subclasses__(), and as I showed object itself is always accessible 
through {}.__class__.__bases__[0].

I'm assuming that the source code for your program is available. That means 
I can find the name of an interesting class which has a method that does 
something destructive, and call it.

e.g. Assuming that the MyDatabase class does something nasty to a file:

>>> class MyDatabase(object):
    def __init__(self, filename):
        self.filename = filename
    def initialise(self):
        print "Splat %s" % self.filename

        
>>> eval('''[ cls for cls in {}.__class__.__bases__[0].__subclasses__()
        if 'MyDatabase' in `cls` 
        ][0]('importantfile').initialise()''', dict(__builtins__=None))
Splat importantfile




From jhe13586 at bigpond.net.au  Sun May 22 05:00:41 2005
From: jhe13586 at bigpond.net.au (Joal Heagney)
Date: Sun, 22 May 2005 09:00:41 GMT
Subject: Is Python suitable for a huge, enterprise size app?
In-Reply-To: <qcidnZRl9uEDBRHfRVn-qQ@powergate.ca>
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>	<jmbsl2-opn.ln1@lairds.us>	<1116442276.918194.194110@g44g2000cwa.googlegroups.com>
	<mailman.163.1116443300.8733.python-list@python.org>
	<428c479f$0$31062$626a14ce@news.free.fr>
	<d6i08p$22o$1@domitilla.aioe.org>
	<qcidnZRl9uEDBRHfRVn-qQ@powergate.ca>
Message-ID: <ZSXje.11454$E7.5140@news-server.bigpond.net.au>

Peter Hansen wrote:
> Maurice LING wrote:
> 
>> It makes big difference (legally) to if the codes are there and 
>> someone sees it, to if the codes are locked in some packaged or zipped 
>> form and someone reverse-engineer it. It is legally as different as if 
>> you drop money on the ground and I pick it up, to pick-pocketing you 
>> and take the money.
>>
>> Nobody seems to be able to understand this simple logic.
> 
> 
> So you're saying that reverse engineering Java bytecode is illegal, 
> while doing the same with Python bytecode is not?  Or something like 
> that?  (And you're a lawyer, right?  Because if you're not, and you're 
> not citing your sources, why is it we should put any value in these 
> comments about what is (legally) true?)
> 
> -Peter

I think he's saying that if you distributed your python code as 
byte-compiled module.pyc or module.pyo form, rather than ascii-text 
module.py form, it would be harder for a reverse-engineer to say "But I 
was JUST looking at it!". Especially when the lawyers are involved.

Joal Heagney


From andre.roberge at gmail.com  Thu May  5 21:06:27 2005
From: andre.roberge at gmail.com (=?ISO-8859-1?Q?Andr=E9_Roberge?=)
Date: Thu, 05 May 2005 22:06:27 -0300
Subject: New Python regex Doc
In-Reply-To: <1115340437.139748.291890@z14g2000cwz.googlegroups.com>
References: <1113301533.054410.203710@z14g2000cwz.googlegroups.com>	<mailman.1813.1113355346.1799.python-list@python.org>	<1113856843.023012.165500@l41g2000cwc.googlegroups.com>	<1113908069.264676.207090@g14g2000cwa.googlegroups.com>	<1115328523.852744.110390@f14g2000cwb.googlegroups.com>
	<1115340437.139748.291890@z14g2000cwz.googlegroups.com>
Message-ID: <d5efhr$j4h$1@sea.gmane.org>

alex23 wrote:
> Xah Lee wrote:
> 
>>99% of programers really don't need to give a flying fuck about the
>>history of a language.
> 
> 
> Ironically, I'm pretty confident that the same percentage of readers on
> this group feel _exactly the same way_ about your 'improvements'.
> 
> -alex23
> 
I take it that when you use the expression "same percentage", you must 
mean within a percent or so!
Andr?



From saint.infidel at gmail.com  Mon May  2 13:59:06 2005
From: saint.infidel at gmail.com (infidel)
Date: 2 May 2005 10:59:06 -0700
Subject: lists in cx_Oracle
In-Reply-To: <pan.2005.05.02.16.33.57.959347@dalkescientific.com>
References: <pan.2005.04.05.18.44.52.434578@dalkescientific.com>
	<pan.2005.04.30.17.02.16.988085@dalkescientific.com>
	<1115047620.602263.180780@o13g2000cwo.googlegroups.com>
	<pan.2005.05.02.16.33.57.959347@dalkescientific.com>
Message-ID: <1115056746.166202.97140@f14g2000cwb.googlegroups.com>

I think perhaps you are asking for something that the OCI doesn't
provide.  At least I'd be rather surprised if it did.  I know that the
SQL syntax doesn't provide for such a mechanism.

And really, it all boils down to the list comprehension:

in_clause = ', '.join([':id%d' % x for x in xrange(len(ids))])

... elegance is certainly subjective, and the above statement isn't the
cleanest ever, but it solves your main problem while avoiding the other
problem you mentiong (sql injection).  Seems "elegant enough" to me.



From joeyjwc at gmail.com  Tue May 31 05:54:48 2005
From: joeyjwc at gmail.com (Joey C.)
Date: 31 May 2005 02:54:48 -0700
Subject: Stupid Newbie Question Concerning CGI and Reading Forward Slashes
Message-ID: <1117533288.097148.134270@g14g2000cwa.googlegroups.com>

Hi, I want to make a configuration script for something and it needs to
read inputs from an HTML file.  A couple of these inputs are textboxes
that the user inputs a path in.  For example:
Your Home Directory:
[/home/me/public_html/]

So, I'm using Python to read these inputs and store them in a
configuration file.  However, I cannot get the CGI to read the forward
slashes (/).  It just leaves a blank area.  So, for example:
Input: /usr/bin/sendmail
Reads: sendmail

Input: /home/me/public_html/
Reads: (Nothing.)

params = cgi.FieldStorage()

def writep(key, name):
  if params.has_key(key):
    fconfig.write(name + ": " + os.path.split(params[key].value)[1] +
";\n")

^ This is the function for handling a key that is read by the cgi.  The
"name" is the name that it stores the key under so the configuration
file looks like:
name: key;[Line Break]

However, is there a way to get it to read the forward slashes?  If
there isn't do you suggest having the user use a different character
and adding a function in the script to substitute a forward slash for
that character?

I tried looking for this for a long while, but maybe I didn't search
enough.  Thanks for all of your help and I'm sorry if this is a
question that has been asked 15 million times.

Joey C.



From steve at holdenweb.com  Thu May 12 00:41:39 2005
From: steve at holdenweb.com (Steve Holden)
Date: Thu, 12 May 2005 00:41:39 -0400
Subject: Python Args By Reference
In-Reply-To: <d5tbb2$n2u$1@sea.gmane.org>
References: <1115769308.136143.74080@f14g2000cwb.googlegroups.com>	<1182j1daaepv6f4@corp.supernews.com>
	<d5tbb2$n2u$1@sea.gmane.org>
Message-ID: <4282DE83.9030908@holdenweb.com>

Fredrik Lundh wrote:
> Grant Edwards wrote:
> 
> 
>>Yes.  All arguments are passed by reference.  This must be in
>>the FAQ somewhere...
> 
> 
> hopefully not, because that saying that "all arguments are passed
> by reference" is extremely confusing for people who've learned about
> "call by reference" in school.
> 
> as has discussed many times on this list, using "call by object"
> (or perhaps "call by object reference" or even "call by sharing")
> is better, both for CS heads and for ordinary people.
> 
> see e.g.
> 
>     http://mail.python.org/pipermail/python-list/2003-May/163312.html
>     http://mail.python.org/pipermail/python-list/2003-May/163028.html
>     http://mail.python.org/pipermail/python-list/2003-May/163078.html
> 
> from a thread where someone claimed that Python used "call by value"
> (which is true, as long as you're free to use your own definition of the
> word "value" ;-)
> 
Or, as one might say, '''"call by value" for some value of "value"'''.

regards
  Steve
-- 
Steve Holden        +1 703 861 4237  +1 800 494 3119
Holden Web LLC             http://www.holdenweb.com/
Python Web Programming  http://pydish.holdenweb.com/



From doodle4 at gmail.com  Fri May 20 11:32:40 2005
From: doodle4 at gmail.com (ashtonn@gmail.com)
Date: 20 May 2005 08:32:40 -0700
Subject: dealing with MAC address
Message-ID: <1116603160.795695.99270@f14g2000cwb.googlegroups.com>

Hello,
I am trying to fill a packet with source and destination mac address.
The first 6 bytes hold the destination mac address and the next six
bytes hold the source mac address. In the code i am filling in the
first six bytes to broadcast address for the destination.

# fill in the destination address
data = array('B', '\0' * 512)
for i in range(6):
    data[i] = 0xFF

How do i fill in a command line passed mac address for source mac
address. The first six bytes of data[i] should contain destination mac
and the next six bytes of data[i] should contain the source mac
address.

Thanks,
Ashton



From carlos80 at gmail.com  Tue May 24 13:54:39 2005
From: carlos80 at gmail.com (los)
Date: 24 May 2005 10:54:39 -0700
Subject: Running a python program during idle time only
In-Reply-To: <87vf59i1ez.fsf@stud.ntnu.no>
References: <1116637560.499307.28700@o13g2000cwo.googlegroups.com>
	<mailman.7.1116821147.18027.python-list@python.org>
	<1116869538.611233.264960@g14g2000cwa.googlegroups.com>
	<87vf59i1ez.fsf@stud.ntnu.no>
Message-ID: <1116957279.110022.134790@g44g2000cwa.googlegroups.com>

Yes it should.  The problem is that I notice a loss in performance when
the program is running at 100% CPU.  Even though it is nice, if you try
to open up new applications, or switch between them, you notice your
computer lagging a little bit.  That's why even though I'm not using
the cpu that much as I'm just reading my email, or browsing the web, I
wouldn't necessarily want the indexing program to be running at full
pace.  If you use google's desktop program, you'll notice that once the
computer has been idle for a few minutes your CPU will go to 100%, but
as soon as you move your mouse, or hit a keystroke the cpu will drop to
5-10% usage.  That's the behavior I'm trying to achieve.

Thanks David for your suggestions.  That seems to be what I was looking
for.  I'm going to try to incorporate those changes in my code and see
what I can come up with.  Thanks for everyone who responded as well.  I
really appreciate it.

-los



From jbo at cannedham.ee.ed.ac.uk  Thu May 26 07:04:20 2005
From: jbo at cannedham.ee.ed.ac.uk (Jim O'D)
Date: Thu, 26 May 2005 12:04:20 +0100
Subject: assignment, references and list comprehension
In-Reply-To: <mailman.130.1117104749.18027.python-list@python.org>
References: <d748km$1l4$1@scotsman.ed.ac.uk>
	<mailman.130.1117104749.18027.python-list@python.org>
Message-ID: <d74ab9$1so$2@scotsman.ed.ac.uk>


> reading this may help:
> 
>     http://effbot.org/zone/python-objects.htm
> 
> </F> 
> 
> 
> 

site bookmarked ;)


From mj at zopatista.com  Wed May  4 18:30:56 2005
From: mj at zopatista.com (Martijn Pieters)
Date: Thu, 05 May 2005 00:30:56 +0200
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <4279366B.6070800@zopatista.com>
References: <d4u60o$akh$1@news2.netvision.net.il>	<mailman.47.1114818531.14961.python-list@python.org>	<1114924100.296223.114020@g14g2000cwa.googlegroups.com>	<1114927892.321086.60190@z14g2000cwz.googlegroups.com>	<zX%ce.78213$ft1.5056576@phobos.telenet-ops.be>	<Zj2de.78345$a42.5091422@phobos.telenet-ops.be>	<8764y29x3m.fsf@uwo.ca>
	<877jihc7qv.fsf@uwo.ca> <4279366B.6070800@zopatista.com>
Message-ID: <42794D20.9080504@zopatista.com>

Martijn Pieters wrote:
> I haven't figured this one out yet either. Rather frustrating really.
> All the hints I've been given so far is to remember the solution for
> level 12.

Awwww, that was devious! I found it finally, how evil that was! I really
fell for it too, until I paid more attention to that error message. Got
it finally. *woot*

Martijn Pieters
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From peter at engcorp.com  Tue May 31 14:34:47 2005
From: peter at engcorp.com (Peter Hansen)
Date: Tue, 31 May 2005 14:34:47 -0400
Subject: how to prepend string to a string?
In-Reply-To: <1117561820.940853.296290@g47g2000cwa.googlegroups.com>
References: <1117498752.591304.42280@g44g2000cwa.googlegroups.com>
	<429bcb76$1_1@newspeer2.tds.net>
	<1117561820.940853.296290@g47g2000cwa.googlegroups.com>
Message-ID: <SIadnakaM-USMwHfRVn-gQ@powergate.ca>

flamesrock wrote:
> Thanks for all the responses :)
> 
> You're right, Kent. That does exactly what I need it to.
> 
> Anyways.. if there isn't a prepend function, I'm going to request it
> from the devs. Would be cool to see that in future versions of python.

Since strings cannot be modified in-place (they are "immutable"), the 
concept of prepend for a string is meaningless (and so is append). 
Instead, you simply build a new string from other bits, and it's 
entirely up to you which comes first and which comes second (thus 
providing implementations equivalent to prepend or append, as you need).

-Peter


From bokr at oz.net  Mon May 16 01:14:31 2005
From: bokr at oz.net (Bengt Richter)
Date: Mon, 16 May 2005 05:14:31 GMT
Subject: question about the id()
References: <mailman.25.1116214118.8733.python-list@python.org>
Message-ID: <42882642.41239799@news.oz.net>

On Mon, 16 May 2005 11:28:31 +0800, "kyo guan" <kyoguan at gmail.com> wrote:

>HI Skip:
>
>	I want to check is there any change in the instance 's methods.
>>>> a=A()
>>>> a2=A()
>>>> a.f == a2.f
>False
>>>> a.f is a2.f
>False
>>>> a.f is a.f
>False
>>>>
>	If the instance methods are create on-the-fly, how to do that? Thanks.
You have to define exactly what you mean by "the instance's methods" first ;-)
a.f is an expression that when evaluated creates a bound method according to
the rules of doing that. You can check what function was found for creating
this bound method using the .im_func attribute -- i.e. a.f.im_func -- but that
is only valid for that particular bound method. A bound method is a first class
object that you can pass around or assign, so the function you might get from
a fresh a.f might differ from a previous a.f, e.g.,

 >>> class A(object):
 ...     def f(self): return 'f1'
 ...
 >>> a=A()
 >>> a2=A()
 >>> a.f.im_func is a2.f.im_func
 True
Now save the bound method a.f
 >>> af = a.f

And change the class A method
 >>> A.f = lambda self: 'f2'

Both a and a2 dynamically create bound methods based on the new method (lambda above)
so the functions are actually the same identical one
 >>> a.f.im_func is a2.f.im_func
 True

But the bound method we saved by binding it to af still is bound to the old method function,
so a new dynamically created one is not the same:
 >>> af.im_func is a2.f.im_func
 False
 >>> af.im_func
 <function f at 0x02FA3CDC>
 >>> a.f.im_func
 <function <lambda> at 0x02F99B1C>
 >>> a2.f.im_func
 <function <lambda> at 0x02F99B1C>

The .im_func function id's are shown in hex through the repr above. I.e., compare with:

 >>> '0x%08X' % id(a2.f.im_func)
 '0x02F99B1C'
 >>> '0x%08X' % id(af.im_func)
 '0x02FA3CDC'

HTH

Regards,
Bengt Richter


From tjreedy at udel.edu  Sat May 14 02:06:22 2005
From: tjreedy at udel.edu (Terry Reedy)
Date: Sat, 14 May 2005 02:06:22 -0400
Subject: Solipsis: Python-powered Metaverse
References: <09da815umhec164dm8ja0k6l2h4i8icm36@4ax.com>
	<20050514001331.15422.1782566605.divmod.quotient.37593@ohm>
Message-ID: <d644gq$gfs$1@sea.gmane.org>


>>On Wed, 11 May 2005 22:48:31 -0400, rumours say that "Terry Reedy"
>><tjreedy at udel.edu> might have written:
>>>play an online action game, which sends a constant stream of update 
>>>info.
>>>Then, curious what would happen, I logged on, from a different computer 
>>>but
>>>through the same router, with a temporary guest account.  Somewhat to my
>>>surprise, it worked -- without touching the computer (XP) or router
>>>settings.  And kept working the whole weekend.  So there is a way to tag
>>>update packets so they can be reliably separated into two streams (and 
>>>vice
>>>versa).  Solipsis should be able to do the same.


> 7On Sat, 14 May 2005 02:28:57 +0300, Christos TZOTZIOY Georgiou 
> <tzot at sil-tec.gr> wrote:

>>In your case, it's the internal address that originated the connection--
>>so the router can distinguish the streams:
>>
>>(int1, port1)->(ext_host, port0)
>>maps to (router_ext, port2)->(ext_host, port0)
>>
>>(int2, port3)->(ext_host, port0)
>>maps to (router_ext, port4)->(ext_host, port0)

Thank you for answering my implicit question.  If I understand now, the 
point I had previously missed is that even though an Internet service must 
typically be addressed *to* a particular port, it does not, typically, have 
to be address *from* that particular port.  So the NAT translator is free 
to associate the doubleton (internal address, internal port) to external 
source port (as long as computers X average ports in use < 64K).

>>However, if both of your internal computers listen to port 6000 for
>>example, there is no easy way for the router to know to which one it
>>should forward an *incoming* request for connection to port 6000

In my case, both computers separately originated their sessions.  So 
apparently, the game company, while listening on port X, is willing to 
service two different sessions for two different accounts to different 
client ports, even at the same address, perhaps anticipating and hoping 
that two or more people behind a firewall might buy accounts.

I could then see a multiplexing problem for Solipsis or similar 
peer-to-peer schemes if everyone, being a server as well as client, is 
required to listen and send to just one port.

"Jp Calderone" <exarkun at divmod.com> wrote in message 
news:20050514001331.15422.1782566605.divmod.quotient.37593 at ohm...

>  Combinations of marginally smart routers and non-broken protocols can 
> deal with even this situation automatically, without user configuration 
> or intervention.
>
>  Traffic to (router_ext, N) from (ext, M) can be switched to (int1, N) or 
> (int2, N) by simply noticing which of int1 or int2 has recently sent 
> traffic from N to (ext, M).

This is what I imagined the router doing.  In  the case I noted, there 
was/is a steady stream of updates to both clients even if they send nothing 
(due to not moving or clicking on anything), so this would not work.  That 
is why I was a bit surprised when it did work.

>  If both have, you can still generally figure it out, by rewriting the 
> source port >automatically on the router.

I presume you are referring here to what Christos described.  I now assume 
that this is what my NetGear was doing.

>  Of course, if your protocol includes port numbers in the application 
> areas of >the packets it sends, the router usually can't properly rewrite 
> the packet, so >things go pear shaped.

'Pear shaped' is an interesting metaphor for what I anticipated.  But I did 
not definitely notice a single misdirected packet.  (Of course, there might 
have been client filtering of obviously misdirected packets.)  So I now 
conclude that the protocol maybe does not hardwire client ports.  Thank you 
for your additions also.
=========

While the above is not directly on-topic for c.l.p, it does suggest 
possible design considerations for users of the socket module and packets 
built on top ;-).
-- including Solipsis, which is such.

Terry J. Reedy








From db3l at fitlinxx.com  Thu May  5 17:57:12 2005
From: db3l at fitlinxx.com (David Bolen)
Date: 05 May 2005 17:57:12 -0400
Subject: py2exe and library.zip
References: <mailman.76.1115095357.6583.python-list@python.org>
	<5uadnUTTqv6Iw-rfRVn-qw@powergate.ca>
	<mailman.129.1115156250.6583.python-list@python.org>
	<maednQTrx_iJLOXfRVn-hA@powergate.ca>
Message-ID: <uzmv92v5z.fsf@fitlinxx.com>

Peter Hansen <peter at engcorp.com> writes:

> Do you know that Subversion has (as I understand it) a fairly
> intelligent binary file comparison routine, and it will (again, as I
> understand it) not transmit the entire contents of the zip file but
> would actually send only the portions that have changed?  At least,
> that's if the file isn't compressed in some way that prevents this
> algorithm from working well.  (Note to self: check if zip files that
> can be in sys.path can be compressed, and if py2exe compresses them.)

Even if the files were compressed, which has a net result similar to
randomizing the contents and will certainly extend the portion that
appears "changed", the worst that would happen is that subversion
(which does use a binary delta algorithm) would end up downloading the
single file portion of the zip file rather than the smaller change
within the file.  It should still be efficient.

But to be honest, for something like the OPs purpose, it's not clear
that an SCM is needed, since all he's trying to accomplish is bring a
remote copy up to date with the central one.  For that you could just
publish a location containing the necessary files and have the users
use something like rsync directly (which is just as efficient in terms
of a binary delta) to update their own local version.

Of course, if the Subversion server is already in place so it's a
convenient server, or if more of the user base already has the client
in place, it should work just about as well.

-- David


From ivanlan at pauahtun.org  Sun May  1 17:14:25 2005
From: ivanlan at pauahtun.org (Ivan Van Laningham)
Date: Sun, 01 May 2005 15:14:25 -0600
Subject: Whats the best Python Book for me
References: <20050501202910.15422.1161950491.divmod.quotient.12335@ohm>
Message-ID: <427546B1.77888681@pauahtun.org>

Hi All--

> On Sun, 01 May 2005 20:18:39 GMT, John Smith <not at home.com> wrote:
> >I already know C/C++ programming and now wish to learn Python to do
> >scripting for some games that are coming out. What book would you recommend.
> >
> >I am thinking Teach Your Self Python in 24 Hours is probably the best place
> >to start...
> >

If you can program in C & C++, I wouldn't recommend starting with my
book.  It's geared to people who know very, very little programming
("Python Mind, Beginner's Mind").  I think that most of what you have to
do is unlearn things you already know how to do.  I started in Python
from where you are, with the addition of a passel of Postscript
programming and enough Lisp to make me dangerous, and learned by setting
myself a real, useful task that hadn't been done before.  I dug through
the manuals and through Lutz' _Programming Python_ and I asked dumb
questions on this list.

If I were starting now, in your place, I'd get a copy of the _Python
Cookbook_ (2e) and keep that handy.  It's a good place to learn idioms,
and that's what you're most in need of right now.

Metta,
Ivan
----------------------------------------------
Ivan Van Laningham
God N Locomotive Works
http://www.andi-holmes.com/
http://www.foretec.com/python/workshops/1998-11/proceedings.html
Army Signal Corps:  Cu Chi, Class of '70
Author:  Teach Yourself Python in 24 Hours


From fperez.net at gmail.com  Wed May 11 14:08:55 2005
From: fperez.net at gmail.com (Fernando Perez)
Date: Wed, 11 May 2005 12:08:55 -0600
Subject: Python Graphing Utilities.
References: <-dadnS0X7IVccR3fRVn-uQ@entouch.net>
	<797fe3d405051010392c00011f@mail.gmail.com>
	<mailman.320.1115772826.29826.python-list@python.org>
	<87psvycqej.fsf@wilson.rwth-aachen.de>
Message-ID: <d5th9d$c55$1@sea.gmane.org>

Torsten Bronger wrote:

> Hall?chen!
> 
> Fernando Perez <fperez.net at gmail.com> writes:
> 
>> [...]
>>
>> And I'd also second the matplotlib suggestion, to which I've by
>> now fully switched after years of faithful gnuplot usage.
>> Matplotlib is very good, has an active development community, and
>> it is designed from the ground up not only as a library for
>> rendering plots to screen/disk, but also for embedding into guis
>> (with support for Tk, WX, GTK, QT and FLTK).
> 
> Why not for Gnuplot, by the way?
> 
> On sceen, matplotlib looks extremely good, however, I still need
> Gnuplot for the hardcopy version[*].  It *seems* to me that the
> programming interfaces are quite different, so a Gnuplot backend for
> matplotlib would be helpful for me.

Well, it's true that the latex-type (called mathtext) support in matplotlib is
not really up to par with true latex (kerning is off in places, mixed
text/math doesn't work well, etc).  I've been willing to live with it so far,
but an alternative option is to use the PS backend and then play psfrag
tricks.  I've yet to experiment with it, but it might (with some additional
handywork) give final results identical to those of the pslatex backend in
gnuplot.

I used gnuplot for about 14 years, so I'm not about to bash it: it's a
fantastic tool.  But there are a number of things it simply can't offer due to
its design as a standalone program, which matplotlib (being a library/widget
collection) can do much better.  And John Hunter (matplotlib's author) has
been _extremely_ receptive to my long list of "gnuplot has this and I won't
switch to matplotlib until you add it" requests.  Today, mpl has a number of
things which have been added by explicitly trying to match either features,
performance or quality against gnuplot after my repeated pestering to him. 
Given these improvements (many of them quite recent), I finally made the
switch and I'm extremely happy.  Even though rough edges remain (like the tex
support), I'm confident that the quality of the library and the team behind it
is such, that they'll be overcome in short order.

But again, this shouldn't be read as anything against gnuplot: it's a very good
tool, M. Haggerty's python support makes it a pleasure to use from python, and
if it does what you need, by all means use it!  I just wanted to fill in a bit
the picture regarding matplotlib, just to be fair to John and his dedicated
team.

Regards,

f



From "myname" at example.invalid  Sat May 28 16:04:51 2005
From: "myname" at example.invalid (VK)
Date: Sat, 28 May 2005 22:04:51 +0200
Subject: Getting value of radiobutton trouble
Message-ID: <3fs17rF9b8edU1@news.dfncis.de>

Hi!
What I'm missing in following code? Cannot get the values of 
radiobuttons. Starting only one class (GetVariant), it works. When I put 
two classes together, it doesn't.
Regards, VK

from Tkinter import *
class GetVariant:
     def __init__(self):
         self.root = Tk()
         self.mainframe = Frame(self.root,bg="yellow")
         self.mainframe.pack(fill=BOTH,expand=1)

         self.firstframe = Frame(self.mainframe,bg="red")
         self.firstframe.pack(side=BOTTOM,expand=1)

         global v
         v = StringVar()
         self.radiobutton = Radiobutton(self.firstframe,text= "Variant 
1", variable=v, value="Variant 1")
         self.radiobutton.pack(side=TOP,anchor=W)
         self.radiobutton.select()
         self.radiobutton = Radiobutton(self.firstframe,text= "Variant 
2", variable=v, value="Variant 2")
         self.radiobutton.pack(side=TOP,anchor=W)
         self.radiobutton = Radiobutton(self.firstframe,text= "Variant 
3", variable=v, value="Variant 3")
         self.radiobutton.pack(side=TOP,anchor=W)



         self.secondframe = Frame(self.mainframe,bg="blue")
         self.secondframe.pack()
         self.var = Button(self.secondframe,text="What 
Variant",command=self.call)
         self.var.pack(expand=1,side=BOTTOM)



     def call(self):
         self.variant = v.get()
         print 'Input => "%s"' % self.variant

class OneButton:
         def __init__(self):
             self.root = Tk()
             Button(self.root,text="click me",command=self.getvar).pack()
         def getvar(self):
             a=GetVariant()

d = OneButton()
d.root.mainloop()




From danb_83 at yahoo.com  Tue May  3 02:42:57 2005
From: danb_83 at yahoo.com (Dan Bishop)
Date: 2 May 2005 23:42:57 -0700
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <mailman.78.1115096637.6583.python-list@python.org>
References: <d4u60o$akh$1@news2.netvision.net.il>
	<mailman.47.1114818531.14961.python-list@python.org>
	<1114924100.296223.114020@g14g2000cwa.googlegroups.com>
	<1114927892.321086.60190@z14g2000cwz.googlegroups.com>
	<zX%ce.78213$ft1.5056576@phobos.telenet-ops.be>
	<Zj2de.78345$a42.5091422@phobos.telenet-ops.be>
	<mailman.6.1115001137.6583.python-list@python.org>
	<3dmi74F6q7m6hU2@individual.net>
	<mailman.73.1115090620.6583.python-list@python.org>
	<1115094028.508122.174390@l41g2000cwc.googlegroups.com>
	<mailman.78.1115096637.6583.python-list@python.org>
Message-ID: <1115102577.942694.191810@z14g2000cwz.googlegroups.com>


John Hazen wrote:
> * Dan Bishop <danb_83 at yahoo.com> [2005-05-02 21:09]:
> > Dan Christensen wrote:
> > > Reinhold Birkenfeld <reinhold-birkenfeld-nospam at wolke7.net>
writes:
> > >
> > > > Dan Christensen wrote:
> > > >> Roel Schroeven <rschroev_nospam_ml at fastmail.fm> writes:
> > > >>
> > > >>> There's no level 12 yet though.
> > > >>
> > > >> Now there's a 12 and a 13 (at least!).
> > > >
> > > > Anyone solved 12? Hints?
> > >
> > > **hint below**
> > >
> > > Look at the filename for the first image you see,
> >
> > You mean "evil1.jpg"?
>
> yup.
>
> > > and make a guess at another filename.
> >
> > I've made tons of guesses, but none of them worked :-(
>
> Hmmm.  The title of the html page is "dealing evil".  If you were
> playing war instead of solitaire, how would you change how you deal
the
> cards?

Well, I'd deal them into 2 piles, and...

Damn!  That was an obscure hint!

Now, how do I open *.gfx files?



From phillip.watts at anvilcom.com  Tue May  3 16:17:29 2005
From: phillip.watts at anvilcom.com (phil)
Date: Tue, 03 May 2005 15:17:29 -0500
Subject: Read / Write image file
References: <mailman.634.1115148003.6582.python-list@python.org>
Message-ID: <4277DC59.5080703@anvilcom.com>

> 
> By the way, what is 'rb' and 'wb' ?
> 

Read Binary, Write Binary
In Win32 the default is text mode which
will screw up binary files

> Also, when I create a client/server sockets I do something like...
> 
> SERVER
> -----------
> server.bind(('', 4321))
> (sock, addr) = server.accept()
> x = server.recv(1024)
> 
> CLIENT
> ------------
> client.connect(('localhost', 4321))
> x = open("abc.txt", "rb")
> client.send(x)
> client.close()
> x.close()
> 
> ...when I do this I get a constant beeping on my PC, any idea why?
> Also, on the server ...how can I set that up so I can receive a
> file/data of unknown size instead of just 1024?
>

1024 is just the buffer size.  You need to recv in a loop
until the len(x) is 0.  You need to do a little reading on sockets.

Beeping I've no idea.  Perhaps packets not handled????



From anton.vredegoor at gmail.com  Sun May 29 09:04:02 2005
From: anton.vredegoor at gmail.com (Anton Vredegoor)
Date: 29 May 2005 06:04:02 -0700
Subject: first release of PyPy
In-Reply-To: <1117300983.547630.252310@g44g2000cwa.googlegroups.com>
References: <mailman.264.1116625088.8733.python-list@python.org>
	<1116629407.638782.145950@g47g2000cwa.googlegroups.com>
	<mailman.9.1116831944.18027.python-list@python.org>
	<d6sn2f$18d$1@news.doit.wisc.edu>
	<mailman.29.1116868886.18027.python-list@python.org>
	<1116880764.260884.286720@g49g2000cwa.googlegroups.com>
	<42934634.5060105@gmx.de>
	<b322b4e605052411071a5c2606@mail.gmail.com>
	<mailman.68.1116961629.18027.python-list@python.org>
	<1117116529.063166.286590@g43g2000cwa.googlegroups.com>
	<1117300983.547630.252310@g44g2000cwa.googlegroups.com>
Message-ID: <1117371842.329155.77090@g14g2000cwa.googlegroups.com>

Kay Schluehr wrote:
> Anton Vredegoor wrote:
>
> > I'm not involved in PyPy myself but this would seem a logical
> > possibility. To go a step further, if the compiler somehow would know
> > about the shortest machine code sequence which would produce the
> > desired effect then there would be no reason to limit onself to only
> > those relatively inefficent standard code sequences that are inside
> > system dll's.
>
> Are You shure that this problem is effectively solvable in any
> language? Since You did not precise Your idea I'm not shure whether You
> want to solve the halting-problem in PyPy or not ;)

Since PyPy is covering new territory it seemed important to provide new
ideas so that they have something to look forward to and will not fall
asleep at the entrance of the new area. Maybe I failed with the new
part but at least I tried :-)

Whether they are supposed to solve the halting problem or if that can
reasonably be expected I don't now either. Is it ethical to send people
on an impossible mission in order to harvest the spinoff? Some evil
genius might have created this universe in order to do just that!

However, people posting code to this list are often reminded of other
algorithms (are you sorting this list? why not use quicksort?) so it
seems possible at least for humans to guess the intentions of another
coder sometimes, and provide better code.

Every time something is described at a higher level (these levels
cannot be found within the original system but must be created by a
leap of the imagination or by divine intervention) there seem to be
ways to remove superfluous things and be more effective even at the
lower level.

Anton

'answering all questions destroys the universe?'



From sxanth at ceid.upatras.gr  Sun May  8 06:46:26 2005
From: sxanth at ceid.upatras.gr (Stelios Xanthakis)
Date: Sun, 08 May 2005 13:46:26 +0300
Subject: pyvm -- faster python
Message-ID: <427DEE02.9070706@ceid.upatras.gr>

Hi.

pyvm is a program which can run python 2.4 bytecode (the .pyc files).
A demo pre-release is available at:
	http://students.ceid.upatras.gr/~sxanth/pyvm/


Facts about pyvm:
- It's FAST. According to the "cooked-bench" benchmark suite it finishes
   in 55% of the time python takes;)
- It's SMALL. Currently the source code is under 15k lines with the
   builtin modules.
- It's new. Uses no code from CPython.
- It's incomplete. Not even near the stability and quality of python.
   It needs A LOT of work before it can be compared to CPython.
   Moreover, at the time it lacks many things like closures, long numbers
   new style classes, etc.
- It's incompatible with CPython. Not all programs run.
- The C API is incompatible. You can't run C modules (a thin wrapper to
   make pyvm appear as libpython *could* be possible but not a goal
   AFAIC)
- The demo is an x86/linux binary only. You shouldn't trust binaries,
   run it in a chrooted environment not as root!

Hope it works!

Cheers,

Stelios


From rupole at hotmail.com  Mon May 23 00:20:07 2005
From: rupole at hotmail.com (Roger Upole)
Date: Mon, 23 May 2005 00:20:07 -0400
Subject: How to receive events (eg. user mouse clicks) from IE
References: <1116476411.853695.235670@g14g2000cwa.googlegroups.com>
	<428c3cbe$1_1@spool9-west.superfeed.net>
	<1116529345.146032.91880@f14g2000cwb.googlegroups.com>
	<428cf5a9$1_1@spool9-west.superfeed.net>
	<1116537405.495521.252570@f14g2000cwb.googlegroups.com>
	<428f5882$1_2@spool9-west.superfeed.net>
	<jDKje.7423$wr.4173@clgrps12>
	<428f8660$1_1@spool9-west.superfeed.net>
	<1116792093.323847.312700@g49g2000cwa.googlegroups.com>
Message-ID: <42915ad9$1_1@spool9-west.superfeed.net>

<cal_2pac at yahoo.com> wrote in message 
news:1116792093.323847.312700 at g49g2000cwa.googlegroups.com...
...
> The problem is that msdn documentation says that in order to identify
> the element that was clicked - one has to query on IHTMLWindow2::event
> property on iHTMLWindow2 interface to get IEventOBj interface and then
> from there - use query interfce to get to the id of the element.
>
> How do I do this in python? ie. I have this code
> class Doc_Events(doc_mod.HTMLDocumentEvents):
>    def Ononclick(self):
>        print 'onClick fired '
> and I see onClick being trapped.
> Now I need to go and get a reference to the iHTMLWindow2 interface. For
> this I need to get a reference to doc_mod (as far as I can see). How do
> I get that in the OnonClick method above.

To get the IHTMLWindow2, you can just use self.parentWindow
inside the event hander, and then get the event from it.  And then
the event's srcElement should be what you need.

class Doc_Events(doc_mod.HTMLDocumentEvents):
    def Ononclick(self):
        print 'onclick'
        ev=self.parentWindow.event
        src=ev.srcElement
        print 'tagName:',src.tagName,'name:',src.getAttribute('name')

For clicking on google's input field, this yields
tagName: INPUT name: q

>
> b) You had mentioned PumpWaitingMessages in the previous posting. I
> first encountered this on newsgroup postings. None of the standard
> books (python on win32 / python developer) seem to explain this in
> detail although this seems to be commonly used. Though I understand
> this now - my problem is that there seems to be a lack of cohesive
> explanation on how python ties up with COM (despite a good chapter 12

PumpWaitingMessages is just a way to ensure that normal message processing
(window messages, events, dde, etc) happens while python code is running.
Normally you don't need it, but every once in a while you hit a situation 
where
blocking occurs.

For how exactly python interacts with COM, the source is your best bet.

        Roger





----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! >100,000 Newsgroups
---= East/West-Coast Server Farms - Total Privacy via Encryption =---


From mtfulmer at tacobell.land  Fri May 13 04:36:06 2005
From: mtfulmer at tacobell.land (mtfulmer at tacobell.land)
Date: Fri, 13 May 2005 08:36:06 GMT
Subject: Parsing HTML with JavaScript
Message-ID: <slrnd88pns.qsm.mtfulmer@tacobell.land>

I am trying to extract some information from a few web pages, and I was
using the HTMLParser module. It worked fine until it got to the
javascript, at which it gave a parse error. Is there a good way to work
around this or should I just preparse the file to remove the javascript
manually? This is my first python program. 


From enleverlesO.OmcO at OmclaveauO.com  Sun May 15 07:51:25 2005
From: enleverlesO.OmcO at OmclaveauO.com (Do Re Mi chel La Si Do)
Date: Sun, 15 May 2005 13:51:25 +0200
Subject: To circumvent the bug cp1252
Message-ID: <428737d3$0$11723$8fcfb975@news.wanadoo.fr>

Hi !


*** for information ***


There is a bug in Python 2.4, worsened with the 2.4.1, for scripts, if they 
are:
  - large
  - with larges lines
  - prefixed (coded) with   # -*- coding: cp1252 -*-
  - on windows (XP & S2003)
  - perhaps, also, other conditions...

This bug announces, wrongly, of the non-existent errors of syntax, blocks 
the generation of the programmable interface of the servers-COM, with Pywin, 
etc.

But I found a means of circumventing the problem:  it is enough to encoder 
scripts in utf-8, and to prefix them with   # -*- coding: utf-8 -*-
(with that, all the problems disappear)

And, I can, finally, use version 2.4.1    -   Yeah !



@-salutations

Michel Claveau









From dieter at handshake.de  Fri May 27 10:12:29 2005
From: dieter at handshake.de (Dieter Maurer)
Date: 27 May 2005 16:12:29 +0200
Subject: Is Python suitable for a huge, enterprise size app?
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>
	<1116432325.497438.64580@g49g2000cwa.googlegroups.com>
	<1116433218.495131.71260@g49g2000cwa.googlegroups.com>
	<1116440427.255902.36260@g49g2000cwa.googlegroups.com>
	<mailman.194.1116489874.8733.python-list@python.org>
	<x7wtptmzkl.fsf@handshake.de>
	<mailman.70.1116967178.18027.python-list@python.org>
Message-ID: <x7mzqgahbm.fsf@handshake.de>

"Fredrik Lundh" <fredrik at pythonware.com> writes on Tue, 24 May 2005 22:38:05 +0200:
> ...
> nothing guarantees that, of course.  but I've never seen that
> happen. and I'm basing my comments on observed behaviour in
> real systems, not on theoretical worst-case scenarios.

I observed in real systems (Zope) that the system got slower
and slower as the amount of allocated memory increased -- although
the OS was far from its memory resource limits (and virtual memory size
was not much larger then resident memory size). Flushing caches
(and thereby releasing most memory) did not speed up things
but restarting did.

I do not understand this observed behaviour.

> every
> time I've seen serious fragmentation, it's been related to leaks,
> not peak memory usage.

An analysis did not reveal serious leaks, in the cases mentioned above.


Dieter



From fredrik at pythonware.com  Sun May 15 06:23:59 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Sun, 15 May 2005 12:23:59 +0200
Subject: Desrtuctor WOES, was Advice on __del__
References: <d5o1s1$8h3$1@sea.gmane.org><d5obmp$cqh$1@sea.gmane.org>	<427FBAD4.3070004@anvilcom.com><d5ogv2$2k9$1@sea.gmane.org>	<42800279.3B26FFF3@pauahtun.org><42800ACD.5060802@anvilcom.com>
	<d5pkaq$sbm$1@sea.gmane.org> <4280E676.7020206@anvilcom.com>
Message-ID: <d677vi$2ac$1@sea.gmane.org>

"phil" wrote:

> SO: without significant rewrite of each class such as triangle
> and line, how can I ensure those canvas lines get deleted?
> You don't really need to understand Canvas, just trust me
> I have to delete those objects and they are not properties of the
> class which go away with garbage collection.

well, I think you're asking the wrong person: I wouldn't use a Canvas
in the first place.  instead, I'd update the screen based on the current
contents of the data structure:

    http://effbot.org/zone/wck-3.htm

(see the "A Simple Canvas Widget" example, and the "Using the
ui_doublebuffer flag" modifications)

</F>





From philippe at philippecmartin.com  Mon May 16 15:15:36 2005
From: philippe at philippecmartin.com (Philippe C. Martin)
Date: Mon, 16 May 2005 19:15:36 GMT
Subject: Extracting pickle from Python
Message-ID: <sj6ie.291$VB6.150@newssvr12.news.prodigy.com>

Hi,

How would one go about extracting the pickle module from Python (ex: to make
a .a or a .dll) ?

Thanks

Philippe




From ani at indomaret.co.id  Fri May 20 06:15:33 2005
From: ani at indomaret.co.id (ani at indomaret.co.id)
Date: Fri, 20 May 2005 17:15:33 +0700
Subject: Mail System Error - Returned Mail
Message-ID: <20050520101701.7F98F1E4002@bag.python.org>


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The original message was received at Fri, 20 May 2005 17:15:33 +0700
from indomaret.co.id [178.88.246.140]

----- The following addresses had permanent fatal errors -----
<python-list at python.org>




From nyamatongwe+thunder at gmail.com  Thu May 26 19:15:10 2005
From: nyamatongwe+thunder at gmail.com (Neil Hodgson)
Date: Thu, 26 May 2005 23:15:10 GMT
Subject: Problem accessing Python Business Forum
In-Reply-To: <1117143488.353879.151600@g43g2000cwa.googlegroups.com>
References: <1117143488.353879.151600@g43g2000cwa.googlegroups.com>
Message-ID: <2Msle.2178$BR4.599@news-server.bigpond.net.au>

John:

> Every time I attempt to look at the Python Business
> Forum (www.python-in-business.org), I encounter an error that starts
> like this:
 > ...

    Laura Creighton responded about this on python-dev:

# The machine is at work, and anybody who wants to fix it
# is welcome to. The problem is that some people decided
# that it would be a good idea to install Zope, and
# archtypes, and I don't know what else.  When things
# broke, none of them had time or inclination to fix it.  The
# people who do have the desire to fix it, don't know
# anything about Zope and have no desire to learn this.
#
# Right now Jacob and I are too busy with Europython to
# worry about the PBF website, given that the PBF
# members have shown no desire to fix this.  In the
# meantime, collaboration between PBF members is working
# quite well and we have more than a few shared projects
# -- but fixing the website is not one of them.
#
# If anybody here wants this job, it is all yours.

    Neil


From "myname" at example.invalid  Sun May 29 11:03:56 2005
From: "myname" at example.invalid (VK)
Date: Sun, 29 May 2005 17:03:56 +0200
Subject: Entry scroll doesn't work
In-Reply-To: <3fu1jhF9klm2U1@news.dfncis.de>
References: <3fu1jhF9klm2U1@news.dfncis.de>
Message-ID: <3fu3vlF991rcU1@news.dfncis.de>

VK wrote:
> Hi!
> Can entry widget be scrolled?
> VK
> 
> TypeError: xview() takes exactly 2 arguments (4 given)
> 
> Code:
> 
> 
> 
> from Tkinter import *
> class ScrollEntry:
>         def __init__(self):
>             self.root = Tk()
>             self.scrollbar = Scrollbar(self.root,orient=HORIZONTAL,)
>             self.entry = Entry(self.root,xscrollcommand=self.scrollbar.set)
>             self.entry.focus()
>             self.entry.pack(side=TOP,fill=X)
>             self.scrollbar.pack(fill=X)
>             self.scrollbar.config(command=self.entry.xview)
>             self.entry.config()
> 
> 
> a=ScrollEntry()
> a.root.mainloop()

Already found:                  :)

http://infohost.nmt.edu/tcc/help/pubs/tkinter/entry-scrolling.html


From jepler at unpythonic.net  Tue May 31 16:11:18 2005
From: jepler at unpythonic.net (Jeff Epler)
Date: Tue, 31 May 2005 15:11:18 -0500
Subject: exit after process exit
In-Reply-To: <1117542386.379343.215340@g47g2000cwa.googlegroups.com>
References: <1117542386.379343.215340@g47g2000cwa.googlegroups.com>
Message-ID: <20050531201117.GB13263@unpythonic.net>

You might want
os.spawnv(os.P_WAIT, "a.exe", ["a.exe"])

os.system("a.exe")

Jeff
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From jhe13586 at bigpond.net.au  Mon May 16 06:46:39 2005
From: jhe13586 at bigpond.net.au (Joal Heagney)
Date: Mon, 16 May 2005 10:46:39 GMT
Subject: Mandrake 10.1 and Python 2.3.4
In-Reply-To: <mailman.11.1116200193.8733.python-list@python.org>
References: <mailman.11.1116200193.8733.python-list@python.org>
Message-ID: <jS_he.4726$E7.237@news-server.bigpond.net.au>

*sighs*

Still not able to find a version of Mandrake Python which won't give me 
this problem, so I just went into site.py and edited it.

Replace all occurances of sys.lib to "lib" and site.py loads up.
Incidently it fixed all the other import issues that I'd been having 
with Python.

Strange that other Mandrake Users aren't getting this.

Joal Heagney

John Ridley wrote:
> "Joal Heagney" wrote:
> 
> 
>>Hi everyone. I've been getting this error message in python, and it's
> 
> 
>>really driving me up the wall.
>>
>>
>>[EMAIL PROTECTED] joal]$ python
>>'import site' failed; use -v for traceback
>>Python 2.3.4 (#1, Apr 18 2005, 19:03:06)
>>[GCC 3.4.1] on linux2
>>Type "help", "copyright", "credits" or "license" for more
> 
> information.
> 
>> >>>
>>
>>Here's the relevant line when i run python in verbose mode:
>>
>>
>>'import site' failed; traceback:
>>Traceback (most recent call last):
>>   File "/usr/lib/python2.3/site.py", line 169, in ?
>>     sys.lib,
>>AttributeError: 'module' object has no attribute 'lib'
>>
>>Is this a Mandrake or a Python mistake?
>>And does anyone know how to fix it?
>>
>>I think this is the reason why I'm getting errors when it comes to 
>>importing other python packages.
> 
> 
> I have both python 2.3.4 and 2.4.1 installed on Mandrake 10.1 - and
> only 2.4.1 gives the error.
> 
> So - have you tried to install python 2.4 recently?
> 
> Also, are you using a pythonrc.py startup file which is trying to
> import the sys module? Have a look to see if a PYTHONSTARTUP
> environment variable has been set to the path of such a file.
> 
> HTH
> 
> John Ridley
> 
> 
> 		
> ___________________________________________________________ 
> How much free photo storage do you get? Store your holiday 
> snaps for FREE with Yahoo! Photos http://uk.photos.yahoo.com


From ckwiguno at gmail.com  Tue May  3 10:16:54 2005
From: ckwiguno at gmail.com (custard_pie)
Date: 3 May 2005 07:16:54 -0700
Subject: sorting list and then return the index of the sorted item
In-Reply-To: <1115128668.633320.285090@f14g2000cwb.googlegroups.com>
References: <1115127433.984686.99060@f14g2000cwb.googlegroups.com>
	<1115128668.633320.285090@f14g2000cwb.googlegroups.com>
Message-ID: <1115129814.666760.167530@f14g2000cwb.googlegroups.com>

Okay...THanks a lot everyone,.. Those codes really help....



From rupole at hotmail.com  Mon May 23 07:33:44 2005
From: rupole at hotmail.com (Roger Upole)
Date: Mon, 23 May 2005 07:33:44 -0400
Subject: Com object questions
References: <mailman.13.1116843178.18027.python-list@python.org>
Message-ID: <4291c07a$1_1@spool9-west.superfeed.net>

Does IPADDRESSSTRUCT appear anywhere in the makepy-generated module ?
Specifically, there should be a RecordMap dict containing any defined 
Records
and their GUID's.

         Roger

"Gijs Korremans" <gijs at globaltrack.com> wrote in message 
news:mailman.13.1116843178.18027.python-list at python.org...
Hi,

I'm still figuring out how I can use the win32com for the use of a com 
object which I think is made in VB

First I've created a file with MakePy
Then I used the following code to init the com object:
import win32com.client
Client = win32com.client.Dispatch("ClientModule.Client")

Then, when I want to use a function, for example this one:
ipaddr = kddClient.GetLocalIPAddress()
I get this error:
File 
"C:\Python23\lib\site-packages\win32com\gen_py\0F4570B8-4D39-47CD-84B4-8A424233EEBFx0x1x0.py", 
line 69, in GetLocalIPAddress
    return self._ApplyTypes_(11, 1, (36, 0), (), 'GetLocalIPAddress', None,)
File "C:\Python23\lib\site-packages\win32com\client\__init__.py", line 446, 
in _ApplyTypes_
    return self._get_good_object_(self._oleobj_.InvokeTypes(dispid, 0, 
wFlags, retType, argTypes, *args),user, resultCLSID)
com_error: (-2147024809, 'The parameter is incorrect.', None, None)
I don't know which parameter is incorrect because the function doesn't need 
any parameters

and when I try to use a struct for the IP address using the following code:
ipaddr = win32com.client.Record("IPADDRESS_STRUCT", Client)
I get this message:
File "C:\Python23\lib\site-packages\win32com\client\__init__.py", line 403, 
in Record
    raise ValueError, "The structure '%s' is not defined in module '%s'" % 
(name, package)
ValueError: The structure 'IPADDRESS_STRUCT' is not defined in module 
'<module 'win32com.gen_py.0F4570B8-4D39-47CD-84B4-8A424233EEBFx0x1x0' from 
'C:\Python23\lib\site-packages\win32com\gen_py\0F4570B8-4D39-47CD-84B4-8A424233EEBFx0x1x0.pyc'>'
I think this means that there is no struct IPADDRESS_STRUCT defined in the 
com object but when I'm going to the ComBrowser in PythonWin it is in there.

I'm using python 2.3 with pywin32 build 203

Does anybody know what i'm doing wrong?

Kind regards,


Gijs

--
This message has been scanned for viruses and
dangerous content by Network Sentry, and is
believed to be clean.
http://www.networksentry.co.za




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From alexs at advfn.com  Mon May 23 14:45:26 2005
From: alexs at advfn.com (Alex Stapleton)
Date: Mon, 23 May 2005 19:45:26 +0100
Subject: Python really does need less lines of code ;)
Message-ID: <46F560EA-77FA-43D8-8463-66B942CC6F27@advfn.com>

Looking for some confirmation that Python really is a more concise  
language than most others, I resorted to the ever handy Computer  
Language Shootout and it's oh so reliable CRAPS scoring system ;)

Python comes second, just after OCaml. Both of which are a  
significantly further ahead of everything else.

For those less inclined to copy and paste the huge URL

http://tinyurl.com/ds5bf

Please excuse the stupidly long URL

http://shootout.alioth.debian.org/benchmark.php? 
test=all&lang=all&sort=fullcpu&xfullcpu=0&xmem=0&xloc=1&ackermann=1&wc=1 
&fannkuch=1&fasta=1&harmonic=1&heapsort=1&knucleotide=1&mandelbrot=1&nbo 
dy=1&nsieve=1&nsievebits=1&objinst=1&methcall=1&pidigits=1&random=1&rege 
xmatch=1&revcomp=1&spectralnorm=1&spellcheck=1&hello=1&sumcol=1&takfp=1& 
tcpecho=1&tcprequest=1&tcpstream=1&process=1&message=1&wordfreq=1&calc=C 
alculate
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From fredrik at pythonware.com  Fri May 13 11:45:51 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Fri, 13 May 2005 17:45:51 +0200
Subject: MySQL: 'latin-1' codec can't encode character
References: <1115990748.006171.96240@g49g2000cwa.googlegroups.com><mailman.24.1115991548.29328.python-list@python.org>
	<1115992562.777210.49050@o13g2000cwo.googlegroups.com>
Message-ID: <d62hko$d0n$1@sea.gmane.org>

francescomoi at europe.com wrote:

> > > File "/usr/lib/python2.3/site-packages/MySQLdb/connections.py",
> line
> > > 33, in defaulterrorhandler
> > >     raise errorclass, errorvalue
> > > UnicodeEncodeError: 'latin-1' codec can't encode character
> u'\u2026' in
> > > position 288: ordinal not in range(256)

> Thank you very much for your quick answer.
>
> Do you suggest to change it by using regexp or must I encode the whole
> texto into a suitable one?

a simple solution would be to manually create a table of problematic
unicode characters, use the translate method on the unicode string,
and then encode using the "replace" option.

    charmap = {
        0x2026: u"...",
        # ...
    }

    text = u'telephone\u2026'

    text = text.translate(charmap)
    text = text.encode("iso-8859-1", "replace")

    print text

    http://docs.python.org/lib/string-methods.html

if you want more control of the replacement, you can skip the translate
step and use your own error handler, e.g.

    charmap = ... see above ...

    def fixunicode(info):
        s = info.object[info.start:info.end]
        try:
            return charmap[ord(s)], info.end
        except KeyError:
            # fallback
            return u"<U+%04x>" % ord(s), info.end

    import codecs
    codecs.register_error("fixunicode", fixunicode)

    text = u'telephone\u2026'

    text = text.encode("iso-8859-1", "fixunicode")

hope this helps!

</F>





From egelendu at yahoo.com  Sat May  7 03:40:32 2005
From: egelendu at yahoo.com (egelendu)
Date: Sat, 07 May 2005 07:40:32 -0000
Subject: How to create email distribution list in yahoo mail?
Message-ID: <d5hrdg+6g6r@eGroups.com>

How to create email distribution list in yahoo mail?




From mrmaple at gmail.com  Wed May 11 10:43:50 2005
From: mrmaple at gmail.com (James Carroll)
Date: Wed, 11 May 2005 10:43:50 -0400
Subject: Fwd: Interactive shell for demonstration purposes
In-Reply-To: <b273c741050511074334b4fa2d@mail.gmail.com>
References: <1115814028.259365.98710@g49g2000cwa.googlegroups.com>
	<mailman.347.1115815769.29826.python-list@python.org>
	<du78y2l5137.fsf@lehtori.cc.tut.fi> <428214DF.7080304@sweetapp.com>
	<b273c741050511074334b4fa2d@mail.gmail.com>
Message-ID: <b273c7410505110743432471c9@mail.gmail.com>

---------- Forwarded message ----------
From: James Carroll <mrmaple at gmail.com>
Date: May 11, 2005 10:43 AM
Subject: Re: Interactive shell for demonstration purposes
To: Brian Quinlan <brian at sweetapp.com>


I would personally try looking at the PyCrust.py that's included with
wxPython.  It has a standard shell, and you can use the Ctrl-]  hotkey
to increase the font size.  You can make it big and readable...  (but
not bold, which would be nice.)  Then, hide your taskbars (or system
menus) and maximize...

-Jim


On 5/11/05, Brian Quinlan <brian at sweetapp.com> wrote:
> Ville Vainio wrote:
> > Hmm, do you consider the fonts in a console window unreadable?
>
> In fullscreen mode, yes (you get no choice of font size in Windows XP).
> In Windowed mode you still only get a limited font selection (only two
> fonts and only a few type sizes [most of which are small]).
>
> > I've
> > given a few presentations using ipython on win32 and it worked alright
> > - but I suppose the projector quality is a factor here...
>
> I'll get by but I was hoping for something better.
>
> Cheers,
> Brian
> --
> http://mail.python.org/mailman/listinfo/python-list
>
>


From lambacck at gmail.com  Mon May 16 19:32:49 2005
From: lambacck at gmail.com (Chris Lambacher)
Date: Mon, 16 May 2005 19:32:49 -0400
Subject: Python on a public library computer
In-Reply-To: <42892C88.6090609@open-networks.net>
References: <1116069664.779281.320540@g47g2000cwa.googlegroups.com>
	<87r7g6rbz0.fsf@pobox.com> <42892C88.6090609@open-networks.net>
Message-ID: <af37e9c50505161632691a90d8@mail.gmail.com>

usb key and moveable python.
http://www.voidspace.org.uk/python/movpy/

On 5/16/05, Timothy Smith <timothy at open-networks.net> wrote:
> John J. Lee wrote:
> 
> >"anton.vredegoor at gmail.com" <anton.vredegoor at gmail.com> writes:
> >
> >
> >
> >>Here's my situation:
> >>
> >>I'm typing this in a public library on a computer with OS windows 2000
> >>server. I can run Internet explorer, word, excel and powerpoint, that's
> >>it. Maybe java, but it seems to be flaky.
> >>
> >>I want to run python scripts from this computer. At home I have a
> >>multi-computer network (from better times) but no internet access
> >>
> >>
> >[...]
> >
> >Why not Jython?
> >
> >
> >John
> >
> >
> how locked down is the computer? there's a few (brave) public access
> unix shell providers out there. if you could run telnet you could use them
> 
> --
> http://mail.python.org/mailman/listinfo/python-list
> 


-- 
Christopher Lambacher
lambacck at computer.org


From onurb at xiludom.gro  Thu May 19 04:00:29 2005
From: onurb at xiludom.gro (bruno modulix)
Date: Thu, 19 May 2005 10:00:29 +0200
Subject: Is Python suitable for a huge, enterprise size app?
In-Reply-To: <mailman.163.1116443300.8733.python-list@python.org>
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>	<jmbsl2-opn.ln1@lairds.us>	<1116442276.918194.194110@g44g2000cwa.googlegroups.com>
	<mailman.163.1116443300.8733.python-list@python.org>
Message-ID: <428c479f$0$31062$626a14ce@news.free.fr>

Ivan Van Laningham wrote:
(snip)

> 
> What you're going to run into are two major stumbling blocks.  One,
> Python's got no credibility with management types unless the
> credibility's already there.  "Python?  Never heard of it.  Tell me
> about it.  ...   Oh, it's interpreted, is it?  Interesting."

Nope, Sir, it's byte-compiled just like Java. But you don't have to
invoke the compiler yourself...

>  You can
> see Python going down the sewer pipes, right on their faces.  Two,
> security.  "This python sounds pretty interesting.  Tell me about the
> security.  How can we prevent people from stealing our source code,
> which we just spent millions developing?  ...  Hmm, trust the developers
> out there not to peek?  Oh, sure, let's use it."  

Just like Java, which is so easy to reverse-engineer...

> (True, there are ways
> around the second, but you're going to have to talk _very_ fast and have
> ALL the answers before the management type gets to his/her office and
> shuts the door in your face and on your idea.)

+1

-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"


From rkern at ucsd.edu  Sat May  7 09:59:20 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Sat, 07 May 2005 06:59:20 -0700
Subject: hard memory limits
In-Reply-To: <WF3fe.1617$1o3.165@newssvr12.news.prodigy.com>
References: <d5f9jl$k6d$1@domitilla.aioe.org>	<mailman.88.1115374567.29826.python-list@python.org>	<d5gphu$hij$1@domitilla.aioe.org>	<mailman.115.1115419109.29826.python-list@python.org>	<d5h4eb$g5v$1@domitilla.aioe.org>
	<427c258b.868346285@news.oz.net>	<lpco719k5lttbn1m9jj3shi08q5h62oe45@4ax.com>	<d5hemh$a83$1@domitilla.aioe.org>
	<WF3fe.1617$1o3.165@newssvr12.news.prodigy.com>
Message-ID: <d5ih6n$n37$1@sea.gmane.org>

Philippe C. Martin wrote:
> Hi,
> 
> Why don't you catch the exception and print the trace ?

I don't think a Python exception is ever raised. The error message 
quoted below comes from the system, not Python.

> Regards,
> 
> Philippe
 >
> Maurice LING wrote:

>>This is the exact error message:
>>
>>*** malloc: vm_allocate(size=9203712) failed (error code=3)
>>*** malloc[489]: error: Can't allocate region
>>
>>Nothing else. No stack trace, NOTHING.

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From dave at pythonapocrypha.com  Tue May 17 11:57:59 2005
From: dave at pythonapocrypha.com (Dave Brueck)
Date: Tue, 17 May 2005 09:57:59 -0600
Subject: Python forum
In-Reply-To: <118k42k64ai7316@corp.supernews.com>
References: <mailman.84.1116320178.8733.python-list@python.org>
	<118k42k64ai7316@corp.supernews.com>
Message-ID: <428A1487.9090104@pythonapocrypha.com>

Grant Edwards wrote:
> On 2005-05-17, Jonas Melian <jonasmg at softhome.net> wrote:
>>I'm going to say a suggestion, why don't you create a forum
>>like the one of Ruby (http://www.rubyforums.com/)? for the
>>novices this is a great help, better than a mail list
[snip]
>>But I think that a forum is great for the learning. The test
>>is in gentoo's forums. They are a lot of experienced people
>>answering questions without any problem and it goes very well
> 
> 
> Except for the torture of using a web forum's UI.
> 
> [In case you can't tell, I hate web forums.  I've never seen a
> single one with a suable UI.]

Amen! Generally they are an abomination.

To make matters worse, many forums that become popular are saddled with so many 
advertisements that moving from one message to another becomes a... grueling... 
lesson... in... patience.

-Dave


From wolfram.kriesing at gmail.com  Fri May 13 06:38:59 2005
From: wolfram.kriesing at gmail.com (Wolfram Kriesing)
Date: Fri, 13 May 2005 12:38:59 +0200
Subject: function with variable arguments
In-Reply-To: <1115977954.266898.141150@g49g2000cwa.googlegroups.com>
References: <1115977954.266898.141150@g49g2000cwa.googlegroups.com>
Message-ID: <965c85e5050513033846beab0@mail.gmail.com>

using default args does actually solve it
what about

def Range(n, m=None, step=None)
  if step==None:
    if m==None:
      range(n)
    else:
      range(n,m)
  else:
    if m==None:
       raise Exception, "missing parameter m"
    else:
      range(n,m,step)

can be optimized i am sure :-)

-- 
cu

Wolfram


On 13 May 2005 02:52:34 -0700, Xah Lee <xah at xahlee.org> wrote:
> i wanted to define a function where the number of argument matters.
> Example:
> 
> def Range(n):
>     return range(n+1)
> 
> def Range(n,m):
>     return range(n,m+1)
> 
> def Range(n,m,step):
>     return range(n,m+1,step)
> 
> this obvious doesn't work. The default argument like
> Range(n=1,m,step=1) obviously isn't a solution.
> 
> can this be done in Python?
> 
> or, must the args be changed to a list?
> 
>  Xah
>  xah at xahlee.org
> ? http://xahlee.org/
> 
> --
> http://mail.python.org/mailman/listinfo/python-list

From kay.schluehr at gmx.net  Sat May 21 04:19:54 2005
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: 21 May 2005 01:19:54 -0700
Subject: first release of PyPy
In-Reply-To: <87is1dyru8.fsf@wilson.rwth-aachen.de>
References: <mailman.264.1116625088.8733.python-list@python.org>
	<1116629407.638782.145950@g47g2000cwa.googlegroups.com>
	<1116644536.741250.249860@g44g2000cwa.googlegroups.com>
	<mailman.279.1116649250.8733.python-list@python.org>
	<1116653460.808204.74460@g43g2000cwa.googlegroups.com>
	<87mzqpytep.fsf@wilson.rwth-aachen.de>
	<7xfywhxerd.fsf@ruckus.brouhaha.com>
	<87is1dyru8.fsf@wilson.rwth-aachen.de>
Message-ID: <1116663593.991618.26770@f14g2000cwb.googlegroups.com>


Torsten Bronger wrote:
> Hall?chen!
>
> Paul Rubin <http://phr.cx at NOSPAM.invalid> writes:
>
> > Torsten Bronger <bronger at physik.rwth-aachen.de> writes:
> >
> >> Please could somebody explain to us non-CS people why PyPy could
> >> have speed features CPython can't have?
> >
> > Does the one-word answer "compiler" explain enough?
>
> No, just more questions.  ;-)
>
> What's supposed to be compiled?  Only PyPy itself or also the
> programs it's "interpreting"?

There is no "PyPy itself". The distinction bewteen interpreter-level
code and application-level code is nothing but a set of coding
conventions which are usefull but not necessary to let the type
inferencer ( "annotator" in PyPy slang ) terminate definitely on a set
of machine-translateable types in case of interpreter-level code. At
least the interpreter should not interpret it's own code after an
inititalisation phase. Currently type annotated application level code
will still be compiled into bytecodes but it is not only possible to
JIT and to specialize it by means of Psyco, but it should be possible
to compile parts of it into native code like we do today with
C-extensions.

It's hard for me to recognize a fixedpoint in this process or a clear
boundary between interpreter and application level code. This is IMO a
pure heuristic not a categorial distinction but is also clear there
will ever be a remaining gap due to the dynanism of the language. I
think a lot of research understanding this distinction will follow in
the next years.

As a conclusion: with PyPy Python will still be interpreted, but a
large corpus of Python code may be compiled into native code of the
underlying machine. 

Regards,
Kay



From flamesrock at gmail.com  Wed May 25 20:31:52 2005
From: flamesrock at gmail.com (flamesrock)
Date: 25 May 2005 17:31:52 -0700
Subject: how to accomplish dl progress bars?
Message-ID: <1117067512.806516.262100@g14g2000cwa.googlegroups.com>

Certain web applications, everything from wget to downloader for X has
this nifty feature I'd like to accomplish in python.

Its the progress bar/time elapsed/time remaining scheme

Filename  | Progress    | Speed (kB/s) | T/Elapsed | T/Remaining
----------------------------------------------------------------------------
blah.bin  |------>45%   |     56.6     |   02:39   |   02:45
file2.bz2 |--->33%      |     35.0     |   05:22   |   11:24
etc       |-------->60% |     47.5     |   00:14   |   00:08

(could be either text or a gui..)

So where would one begin to accomplish this sort of thing efficiently?

I've searched the web and there are plenty of resources on network
programming in python, but how could I
1) keep track of download speed
2) calculate t/elapsed/remaining
3) output that to a progress bar

w/o spawning countless threads to do the many calculations and avoid
eating up the entire CPU.

This seems like it would require a lot of resources and easily go out
of sync with the real world file transfer. To compound problems, I have
a very limited understanding of threads and using multiple threads that
rely on eachother doesn't make very much sense.

Can anyone point me in the right direction?

-thanks in advance



From derek at hiredgoons.org  Sun May  1 22:52:30 2005
From: derek at hiredgoons.org (Derek Thomson)
Date: Mon, 02 May 2005 12:52:30 +1000
Subject: Debugging threaded Python code
Message-ID: <427595ee$1@duster.adelaide.on.net>

Hi,

I frequently have to debug some fairly tricky Python multi-threaded 
code, and I need some help using the debugger to help me diagnose the 
problems when they occur. Yes, I know that the best option with threaded 
code that is problematic is to rewrite it, but that's not really an 
option that I have (right now).

What would really help me is to be able to see a list of all the 
currently active threads, and the Python stack trace for each. At least 
then I could see where the failures are happening - deadlocks in 
particular. I have to spend a lot of time right now just to reach that 
point.

I spent some time trying to achieve this with the Python debugger and 
couldn't. This has been bugging me for quite a while now, and I'm 
probably just missing the obvious as usual. Is there some simple way I 
can do this?

Thanks,
Derek.


From enleverlesO.OmcO at OmclaveauO.com  Sat May 28 03:10:44 2005
From: enleverlesO.OmcO at OmclaveauO.com (Do Re Mi chel La Si Do)
Date: Sat, 28 May 2005 09:10:44 +0200
Subject: write to the same file from multiple processes at the same time?
References: <e3617$429713d7$3eb01f24$9096@news.flashnewsgroups.com>
Message-ID: <42981981$0$3112$8fcfb975@news.wanadoo.fr>

Hi !


On windows, with PyWin32, to read this little sample-code :


import time
import win32file, win32con, pywintypes

def flock(file):
    hfile = win32file._get_osfhandle(file.fileno())
    win32file.LockFileEx(hfile, win32con.LOCKFILE_EXCLUSIVE_LOCK, 0, 0xffff, 
pywintypes.OVERLAPPED())

def funlock(file):
    hfile = win32file._get_osfhandle(file.fileno())
    win32file.UnlockFileEx(hfile, 0, 0xffff, pywintypes.OVERLAPPED())


file = open("FLock.txt", "r+")
flock(file)
file.seek(123)
for i in range(500):
    file.write("AAAAAAAAAA")
    print i
    time.sleep(0.001)

#funlock(file)
file.close()




Michel Claveau





From wuwei23 at gmail.com  Mon May  9 02:20:13 2005
From: wuwei23 at gmail.com (alex23)
Date: 8 May 2005 23:20:13 -0700
Subject: path(file)
In-Reply-To: <mailman.145.1115482035.29826.python-list@python.org>
References: <mailman.145.1115482035.29826.python-list@python.org>
Message-ID: <1115619613.227350.123240@g14g2000cwa.googlegroups.com>


Sara Khalatbari wrote:
> Suppose I have a list of files & I wanna know  their
> path.
> is there a command that helps me do so in python?

Do you _really_ intend to learn Python one question to this list at a
time?

There's a tutorial list that exists to help early users:
http://mail.python.org/mailman/listinfo/tutor

You'd also benefit from going through their archives:
http://mail.python.org/pipermail/tutor/

I'm sorry if this reply sounds a little terse, I'm just concerned about
comp.lang.python's gradual decline into a search engine for questions
that can be quickly and easily answered by even a casual check of the
documentation.

-alex23



From peter at engcorp.com  Sun May  8 09:17:24 2005
From: peter at engcorp.com (Peter Hansen)
Date: Sun, 08 May 2005 09:17:24 -0400
Subject: New Python regex Doc
In-Reply-To: <86hdhes988.fsf@guru.mired.org>
References: <1113301533.054410.203710@z14g2000cwz.googlegroups.com>
	<mailman.1813.1113355346.1799.python-list@python.org>
	<1113856843.023012.165500@l41g2000cwc.googlegroups.com>
	<1113908069.264676.207090@g14g2000cwa.googlegroups.com>
	<1115328523.852744.110390@f14g2000cwb.googlegroups.com>
	<1115423751.016177.250650@o13g2000cwo.googlegroups.com>
	<1115444726.627426.172260@g14g2000cwa.googlegroups.com>
	<1115508491.462229.294020@o13g2000cwo.googlegroups.com>
	<86hdhes988.fsf@guru.mired.org>
Message-ID: <5PqdnTkYZYUvjOPfRVn-uw@powergate.ca>

Mike Meyer wrote:
> As I've suggested before, what's really needed is a short tutorial on
> regular expressions in general. That page could include a definition
> of terms that are unique to regular expressions, and the re package
> documentation could link the word greedy to that definition.

You mean like http://www.amk.ca/python/howto/regex/ ?

Which as I recall is already linked from the Python re docs.  (Perhaps 
Xah's browser wasn't working that day...)

And which, at least implicitly, defines "greedy" by in section 6.3 
titled "Greedy versus Non-Greedy".  It's not perfect, but then nobody in 
this thread has offered anything even remotely resembling perfect 
documentation for regular expressions yet. <wink>

-Peter


From tjreedy at udel.edu  Mon May  9 11:34:05 2005
From: tjreedy at udel.edu (Terry Reedy)
Date: Mon, 9 May 2005 11:34:05 -0400
Subject: Exception in Python 2.3.3 Interpreter
References: <1115627455.511797.7590@o13g2000cwo.googlegroups.com>
Message-ID: <d5nvfk$uvm$1@sea.gmane.org>


"Saravanan" <saravanand at vsnl.net> wrote in message 
news:1115627455.511797.7590 at o13g2000cwo.googlegroups.com...
> Im running Python Application as a Windows Service (using windows
> extensions).  But, sporadically the application crashes (crash in
> Python23.dll) and this stops the service.  This problem cann't be
> reproduced easily in my system and the call stack generated by the
> application is given below. Please note that the call stack generation
> is taken from crash dump file.
>
> The crash occured at the following line:
> c = strcmp(vname, wname) (object.c)

I am puzzled by this line.  I can't see how it could execute.
Is this C or Python code? from the distribution or your code?
How is the result of strcmp (-1, 0, 1 ?) supposed to be callable?
Is this guarded by a rarely triggered condition?

Terry J. Reedy







From mwm at mired.org  Wed May  4 09:30:44 2005
From: mwm at mired.org (Mike Meyer)
Date: Wed, 04 May 2005 08:30:44 -0500
Subject: Python FAQ entries (Was: control precision for str(obj) output?)
References: <d598rq$8fj$1@joe.rice.edu> <864qdj90vd.fsf@guru.mired.org>
	<pan.2005.05.04.05.26.11.56711@dalkescientific.com>
	<1115186175.778899.48610@f14g2000cwb.googlegroups.com>
Message-ID: <86wtqf6ruj.fsf_-_@guru.mired.org>

"Dan Bishop" <danb_83 at yahoo.com> writes:

> Andrew Dalke wrote:
>> Mike Meyer wrote:
>> > Someone want to tell me the procedure for submitting FAQ entries,
> so I
>> > can do that for this?
>>
>> You mean more than what already exists at
>>
> http://www.python.org/doc/faq/general.html#why-are-floating-point-calculations-so-inaccurate
>>
>> which has a link to an even more detailed chapter in the tutorial at
>>   http://docs.python.org/tut/node16.html
>
> Yes.  Those pages explain why repr(0.2) != '0.2', but they don't
> explain why str([x]) != '[%s]' % x .

Exactly. The point that needs to go in the FAQ is the behavior of str
on lists, not floating point representation. The latter needs to be
mentioned, but isn't critical.

A quick check of the Python site turns up no discussion on submitting
new FAQ entries. There are patch submission guidelines, and lots of
things related to the mailman FAQ, but nothing on how to submit new
entries for the FAQ. Or has the FAQ been supplanted by the wiki at
www.python.org/moin, even though there doesn't appear to be a FAQ
page?

        <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From tim.peters at gmail.com  Tue May  3 16:32:04 2005
From: tim.peters at gmail.com (Tim Peters)
Date: Tue, 3 May 2005 16:32:04 -0400
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <4277DC35.6020607@transnorm.ch>
References: <d4u60o$akh$1@news2.netvision.net.il>
	<4277DC35.6020607@transnorm.ch>
Message-ID: <1f7befae0505031332f658594@mail.gmail.com>

[Tiziano Bettio]
> PLEASE HELP...
>
> What the hell do i have to pronounce in puzzle 5????
>
> Some useful hints would be awesome

That's a funny one:  I didn't understand the "pronounce it" hint until
long after I solved that one.  Then again, Guido & I implemented PEP
307, so I knew what to do the instant I saw the file <wink>.


From tim.golden at viacom-outdoor.co.uk  Tue May 17 04:13:01 2005
From: tim.golden at viacom-outdoor.co.uk (Tim Golden)
Date: Tue, 17 May 2005 09:13:01 +0100
Subject: Problem listing services with wmi
Message-ID: <9A28C052FF32734DACB0A288A3533991EBB815@vogbs009.gb.vo.local>

[Jean-S?bastien Guay]
| 
| I installed Tim Golden's wmi module 
| (http://tgolden.sc.sabren.com/python/wmi.html), in the hopes it would 
| help me list and work with services on my Win32 machine. Now, 
| everything seems fine except for one thing : Listing services!
| 
| import wmi
| 
| c = wmi.WMI ()
| for s in c.Win32_Service ():
|   if s.State == 'Stopped':
|     print s.Caption, s.State
| 
| and I get :
| 
| Traceback (most recent call last):
|   File "<stdin>", line 1, in ?
|   File "G:\Python-2.4\Lib\site-packages\wmi.py", line 404, in __call__
|     return self.wmi.query (wql)
|   File "G:\Python-2.4\Lib\site-packages\wmi.py", line 583, in query
|     raise WMI_EXCEPTIONS.get (hresult, x_wmi (hresult))
| wmi.x_wmi: -2147217398

Nothing obvious, I'm afraid. I cut-and-pasted the code directly
from your email and it worked fine on my Win2K machine. For your
information, what the code is doing behind the scenes is the following:

<code>

import win32com.client

c = win32com.client.GetObject (
  "winmgmts:{impersonationLevel=Impersonate,authenticationLevel=Default}/root/cimv2"
)
for service in c.ExecQuery ("SELECT * FROM Win32_Service"):
  if service.Properties_ ("State").Value == "Stopped":
    print service.Properties_ ("Caption").Value
    print service.Properties_ ("State").Value

</code>

You might try cutting-and-pasting that code into an interpreter window
to see what happens. Likewise, the following code snippet does something
similar for vbs. Save it as something.vbs, and then run it from the
command prompt with "cscript something.vbs" (or however you want to
do it). I'd be interested to know if it gives the same error as the
Python version.

<code>

set wmi = GetObject ("winmgmts:{impersonationLevel=impersonate}")
set ServiceSet = wmi.InstancesOf ("Win32_Service")
for each Service in ServiceSet
   WScript.Echo Service.Description
Next

</code>

TJG

PS I realise that by now you've probably moved on from
this approach, but if you did manage to pin down a problem
we could address, I'd be very glad to address it.

________________________________________________________________________
This e-mail has been scanned for all viruses by Star. The
service is powered by MessageLabs. For more information on a proactive
anti-virus service working around the clock, around the globe, visit:
http://www.star.net.uk
________________________________________________________________________


From peter at engcorp.com  Sun May 15 21:32:39 2005
From: peter at engcorp.com (Peter Hansen)
Date: Sun, 15 May 2005 21:32:39 -0400
Subject: Property,how to use it?
In-Reply-To: <mailman.12.1116200211.8733.python-list@python.org>
References: <mailman.12.1116200211.8733.python-list@python.org>
Message-ID: <C7-dnVGZBP6oZRrfRVn-iQ@powergate.ca>

Delaney, Timothy C (Timothy) wrote:
> Pidaqing at mail.iame.cn wrote:
> 
>>What is the "property" mean in the python? Who can explain it
>>for me? I don't know how to use it.
> 
> http://www.catb.org/~esr/faqs/smart-questions.html

Or he can just learn to use Google:

http://www.google.com/search?q=python+properties

-Peter


From steve at holdenweb.com  Fri May  6 07:25:15 2005
From: steve at holdenweb.com (Steve Holden)
Date: Fri, 06 May 2005 07:25:15 -0400
Subject: New Python regex Doc
In-Reply-To: <d5e44v$jg6$3@sea.gmane.org>
References: <1113301533.054410.203710@z14g2000cwz.googlegroups.com><mailman.1813.1113355346.1799.python-list@python.org><1113856843.023012.165500@l41g2000cwc.googlegroups.com><1113908069.264676.207090@g14g2000cwa.googlegroups.com>	<1115328523.852744.110390@f14g2000cwb.googlegroups.com>
	<d5e44v$jg6$3@sea.gmane.org>
Message-ID: <427B541B.3050300@holdenweb.com>

Fredrik Lundh wrote:
> Xah Lee wrote:
> 
> 
>>I have now also started to rewrite the re-syntax page. At first i
>>thought that page needs not to be rewritten, since its about regex and
>>not really involved with Python. But after another look, that page is
>>as incompetent as every other page of Python documentation.
>>
>>The rewritten page is here:
>>http://xahlee.org/perl-python/python_re-write/lib/re-syntax.html
>>
>>It's not complete
> 
> 
> and it no longer describes how things work.  study the inner workings
> of the RE engine some more, and try again.
> 

Though I realise I'm not one to gloat about other people's typos, I did 
find that "When the LOCALE and UNICODE flags are apples as usual." 
really appealed to my imagination. And I thought it was all ones and 
zeroes ...

regards
  Steve
-- 
Steve Holden        +1 703 861 4237  +1 800 494 3119
Holden Web LLC             http://www.holdenweb.com/
Python Web Programming  http://pydish.holdenweb.com/



From fredrik at pythonware.com  Tue May 10 13:29:03 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 10 May 2005 19:29:03 +0200
Subject: Python Graphing Utilities.
References: <-dadnS0X7IVccR3fRVn-uQ@entouch.net>
Message-ID: <d5qqj1$2oc$1@sea.gmane.org>

Kenneth Miller wrote:

>     I am new to Python and i was wondering what graphing utlities would be
> available to me. I have already tried BLT and after weeks of unsuccesful
> installs i'd like to find something else. Anything someone would recommend?

start here:

    http://www.python.org/moin/NumericAndScientific/Plotting
    http://starship.python.net/crew/jhauser/plot-res.html

or roll your own:

    http://effbot.org/zone/wckgraph.htm

</F>





From morton at lsupcaemnt.com  Wed May 18 16:06:53 2005
From: morton at lsupcaemnt.com (Ed Morton)
Date: Wed, 18 May 2005 15:06:53 -0500
Subject: Comparing 2 similar strings?
In-Reply-To: <24a6d$428b9c10$d1b717f8$2300@PRIMUS.CA>
References: <24a6d$428b9c10$d1b717f8$2300@PRIMUS.CA>
Message-ID: <428BA05D.1010600@lsupcaemnt.com>



William Park wrote:

> How do you compare 2 strings, and determine how much they are "close" to
> each other?  Eg.
>     aqwerty
>     qwertyb
> are similar to each other, except for first/last char.  But, how do I
> quantify that?
> 
> I guess you can say for the above 2 strings that
>     - at max, 6 chars out of 7 are same sequence --> 85% max
> 
> But, for
>     qawerty
>     qwerbty
> max correlation is
>     - 3 chars out of 7 are the same sequence --> 42% max
> 
> (Crossposted to 3 of my favourite newsgroup.)
>

"However you like" is probably the right answer, but one way might be to 
compare their soundex encoding 
(http://foldoc.doc.ic.ac.uk/foldoc/foldoc.cgi?soundex) and figure out 
percentage difference based on comparing the numeric part.

	Ed.


From usenet at gungfu.de  Mon May 16 02:31:25 2005
From: usenet at gungfu.de (=?iso-8859-1?q?Steffen_Gl=FCckselig?=)
Date: 15 May 2005 23:31:25 -0700
Subject: Precision?
References: <1116165159.269252.117830@g14g2000cwa.googlegroups.com>
	<mailman.6.1116195166.8733.python-list@python.org>
Message-ID: <1116225085.039763.138750@o13g2000cwo.googlegroups.com>

So for using the python-interpreter as a simple calculator using
'print' seems to be the simplest and still exact way...


Thanks for clarification
Steffen



From Serge.Orlov at gmail.com  Tue May 17 03:07:49 2005
From: Serge.Orlov at gmail.com (Serge.Orlov at gmail.com)
Date: 17 May 2005 00:07:49 -0700
Subject: Anyway to designating the encoding of the "source" for compile?
References: <1116087091.856022.155340@z14g2000cwz.googlegroups.com>
	<1116263722.499345.73260@g43g2000cwa.googlegroups.com>
	<sg2i8119lqdrlu0sb6atgrj88cgjrda6f0@4ax.com>
	<1116286039.267037.91500@o13g2000cwo.googlegroups.com>
	<1116287070.202497.16340@g44g2000cwa.googlegroups.com>
	<dndi81lj2s610u1rm1q8n088iturvee2bt@4ax.com>
	<1116311320.740175.94590@g49g2000cwa.googlegroups.com>
Message-ID: <1116313669.166135.128970@f14g2000cwb.googlegroups.com>

janeaustin... at hotmail.com wrote:
> Thank you but there is still a problem.
>
> |>>> s='euckr="\xc7\xd1";uni=u"\xc7\xd1"'
> |>>> su=s.decode('euc-kr')
> |>>> su
> |u'euckr="\ud55c";uni=u"\ud55c"'

su[7] is a non-ascii character inside the byte string euckr

> |>>> c=compile(su,'','single')
> |>>> exec c
> |>>> euckr,uni
> |('\xed\x95\x9c', u'\ud55c')
> |>>>
>
> As you see the single's result is turned into UTF-8 encoding.

See my previous message. Non-ascii characters in byte strings
are deprecated.

  Serge.



From frithiof.jensen at diespammerdie.jensen.tdcadsl.dk  Wed May 18 05:15:48 2005
From: frithiof.jensen at diespammerdie.jensen.tdcadsl.dk (Frithiof Andreas Jensen)
Date: Wed, 18 May 2005 11:15:48 +0200
Subject: setting up scipy in windows
References: <1116384514.608584.9180@g49g2000cwa.googlegroups.com>
Message-ID: <428b07c3$0$50617$edfadb0f@dread14.news.tele.dk>


"hawkesed" <olaamigoquepasa at hotmail.com> skrev i en meddelelse 
news:1116384514.608584.9180 at g49g2000cwa.googlegroups.com...


> Scipy looks like just the thing I want, if anyone has got it running on
> a Windows box I would like to hear how you did it.

With STANDARD Python 2.3 it installs from the Python 2.3 win 32 installers 
and runs.

The only problem I had was that "Numeric" needs to be installed before 
"Scipy" or Scipy will chrash. 




From cowie.rob at gmail.com  Sat May 28 16:12:40 2005
From: cowie.rob at gmail.com (Rob Cowie)
Date: 28 May 2005 13:12:40 -0700
Subject: Help with choice of suitable Architecture
In-Reply-To: <atgh91hlophgsuio8qctrht31q03mght4b@4ax.com>
References: <1117299643.380598.5540@g47g2000cwa.googlegroups.com>
	<mailman.221.1117304620.18027.python-list@python.org>
	<atgh91hlophgsuio8qctrht31q03mght4b@4ax.com>
Message-ID: <1117311160.307176.216430@o13g2000cwo.googlegroups.com>

I agree with the sentiments that a single XML file is not the way to go
for storing data that may be accessed concurrently. However, my hands
are tied.

It seems that CGI is likely to be the most straightforward option. Is
the learning curve likely to be steeper for pure CGI or a web
application architecture such as Nevow?

Paul..... I agree that client-side scripting increases the level of
compexity, but did it really go out of fashion with pop-ups? It seems
to be just getting started. Google use it to great effect.... maps,
suggest etc. I wasn't thinking of using it to deal with any 'business
logic', just to add some dynamism to the interface - use
XMLhttprequests, a bit of DOM scripting etc.



From willitfw at gmail.com  Thu May  5 15:07:52 2005
From: willitfw at gmail.com (willitfw)
Date: 5 May 2005 12:07:52 -0700
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <d4u60o$akh$1@news2.netvision.net.il>
References: <d4u60o$akh$1@news2.netvision.net.il>
Message-ID: <1115320072.101049.319650@o13g2000cwo.googlegroups.com>

any help on level 4 would be appreciated.  i've looked at the hints,
but isn't obvious



From peter at engcorp.com  Sun May 15 13:48:03 2005
From: peter at engcorp.com (Peter Hansen)
Date: Sun, 15 May 2005 13:48:03 -0400
Subject: Range function
In-Reply-To: <1116174619.859728.297260@g14g2000cwa.googlegroups.com>
References: <1115951576.138445.51080@z14g2000cwz.googlegroups.com>
	<1116150732.766217.258960@g47g2000cwa.googlegroups.com>
	<hdGdnZ2c1uWf0BrfRVn-gQ@powergate.ca>
	<1116174619.859728.297260@g14g2000cwa.googlegroups.com>
Message-ID: <bOqdnZH3kpfMFhrfRVn-gg@powergate.ca>

Xah Lee wrote:
> the previous posted solutions are badly botched.

> def Range(iMin, iMax=None, iStep=None):
[snip hideous code]

> # Thanks to Peter Hansen for a correction.

Ohmigod, he's only made it worse and he's blaming me for it.  Shows what 
I get for replying to a cross-posted troll message.

Xah, don't use my name in reference to anything you do, ever, even if 
it's only to try to give me credit.

-Peter


From h_stovold at hotmail.com  Tue May  3 11:02:12 2005
From: h_stovold at hotmail.com (Heather Stovold)
Date: Tue, 3 May 2005 10:02:12 -0500
Subject: So many things that need to be decided....
References: <G3Ade.1022$fF6.12717@news1.mts.net>
	<86sm1584l4.fsf@guru.mired.org>
Message-ID: <zuMde.1076$fF6.14053@news1.mts.net>


> > I've decided on DrPython for the Editor....
>
> An editor for each language? Is that the kind of tower you get when
> you start using IDEs? I just kept right on using the same text editor
> I'd been using for the last 20 (now 30) years.

I have programmed in the past with a plain text editor too did it for
years. - but I much prefer programming with tools that have syntax coloring,
code completion, and the ability to run from the editor. Debugging tools are
a bonus too.


>
> > I still need to decide on a database........   I've really only used
Access,
> > and my SQL skills aren't that great.  It would also need to be free....
> > Any suggestions??
>
> Access is just a way of talking to a database. Which is what most
> Python database tools are - ways to talk to a back-end database.  If

MS Access is also a file-based relational-database program in Windows, which
you can access the database files either through the program, or the
database directly through other tools - including most MS programming
languages.

> You might be better off with something that doesn't require a separate
> server. Gadfly appears to qualify. There are probably other packages
> that give you a DB-API or SQL interace to an internal database that
> will serve your purpose.

At this point, it would be the best to not require a seperate server.  There
will be only 1 or a handful of people accessing the database at once.

> That won't depend on the database. It will depend on what you want
> your applications to do when it comes to generating reports - assuming
> you generate any at all.

Some reports are a definate requirement.


Thank you

Heather




From unsafely at webengr.com  Sun May 22 02:50:38 2005
From: unsafely at webengr.com (Keith)
Date: Sat, 21 May 2005 18:50:38 -1200
Subject: We are one of the world leading legal sources for male impotence
	treatments 
Message-ID: <130075958.79837@61.248.136.196>

The best you may make for is to be the #1 lover.
http://headquarters.bestmedstuff.info/?makeupsxtvuycreakzvpdiachronic
The thing is that a great errrect1on is provided for you exactly when you want.




From ccurvey at gmail.com  Wed May 11 20:34:23 2005
From: ccurvey at gmail.com (Chris Curvey)
Date: 11 May 2005 17:34:23 -0700
Subject: win32com and ADO
In-Reply-To: <r8ydnQyzdvOqCB_fRVn-gg@powergate.ca>
References: <1115833669.142021.294080@g44g2000cwa.googlegroups.com>
	<d5tk41$ae3$02$1@news.t-online.com>
	<1115838522.077741.140940@o13g2000cwo.googlegroups.com>
	<r8ydnQyzdvOqCB_fRVn-gg@powergate.ca>
Message-ID: <1115858063.345931.132920@g49g2000cwa.googlegroups.com>

it was working fine before running makepy, once I ran makepy, I had to
add the array index to make it work.



From Servatius.Brandt at fujitsu-siemens.com  Wed May 25 03:30:04 2005
From: Servatius.Brandt at fujitsu-siemens.com (Brandt, Servatius)
Date: Wed, 25 May 2005 09:30:04 +0200
Subject: Build error  Python 2.4.1 - stat problem?
Message-ID: <DE26E293539224499409D3E333E3367F0189F1EF@ABGEX02E.abg.fsc.net>

Donn Cave wrote:

>In article <mailman.56.1116946912.18027.python-list at python.org>,
> <Servatius.Brandt at fujitsu-siemens.com> wrote:
>...
>> I used the python executable from the build directory to run the
>> following program:
>> 
>>     import os
>> 
>>     def main():
>>         if not (os.path.exists("/")):
>>             print "/ does not exist"
>>         else:
>>             print "/ exists"
>>         if not (os.path.isdir("/")):
>>             print "/ is not a directory"
>>         else:
>>             print "/ ok"
>>     
>>     if   name   == "  main  ":
>>         main()
>> 
>> The output is:
>> 
>>     / exists
>>     / is not a directory
>> 
>> It's the same for every (existing) directory name I try: 
>os.path.isdir()
>> always returns false.
>> 
>> It looks as if the stat results are not recognised: os.path.exists()
>> works, but all the functions os.path.isdir(), os.path.isfile() etc.
>> don't.
>> 
>> Could anyone help me to solve the problem?
>
>Unless there are other Reliant users here ahead of you, some
>of it is going to be up to you.  If you follow isdir() back,
>you'll find some hard-coded octal bitmask definitions, including
>S_IFDIR = 0040000.
>
>Check it out.  Try to use that value the way they're using it,
>in C and in Python, and print out all the values involved.
>At worst, if C comes out wrong too, you may have a question
>that the vendor will be more likely to respond to.

First, thanks very much for your help.  On the Reliant Unix system,
C and Python both use the value you mention above.

I added some debug prints to isdir in Lib/posixpath.py in the build
tree:

    def isdir(path):
	"""Test whether a path is a directory"""
	try:
	    st = os.stat(path)
	    print "isdir: OK, path: %s" % path
	    print "st: %s" % st
	    print "size, mtime, atime, ctime, dev, ino:"
	    print "%s %s %s %s %s %s" % (st.st_size, st.st_mtime,
st.st_atime, st.st_ctime, st.st_dev, st.st_ino)
	except os.error:
	    print "isdir: OS.ERROR, path: %s" % path
	    return False
	return stat.S_ISDIR(st.st_mode)

and to S_ISDIR in Lib/stat.py:

    def S_ISDIR(mode):
	print "S_ISDIR: S_IFMT(mode): %s, S_IFDIR: %d" % (S_IFMT(mode),
S_IFDIR)
	print "mode: %s" % mode
	return S_IFMT(mode) == S_IFDIR

Then my sample program (see quote above) produces the following output:

    isdir: OK, path: /usr/local/lib/python2.4/site-packages
    st: (2, 1088705490076141L, 1050758L, 0, 1, 0, 4797493958154069376L,
870000000, 870000000, 0)
    size, mtime, atime, ctime, dev, ino:
    4797493958154069376 870000000 870000000 0 1050758 1088705490076141
    S_ISDIR: S_IFMT(mode): 0, S_IFDIR: 16384
    mode: 2
    isdir: OK, path: /usr/local/lib/site-python
    st: (2, 1088653950468589L, 1050758L, 0, 1, 0, 4797493958164069376L,
880000000, 880000000, 0)
    size, mtime, atime, ctime, dev, ino:
    4797493958164069376 880000000 880000000 0 1050758 1088653950468589
    S_ISDIR: S_IFMT(mode): 0, S_IFDIR: 16384
    mode: 2
    / exists
    isdir: OK, path: /
    st: (48, 8589951469L, 1050752L, 0, 0, 0, 4797500748297364352L,
120000000, 120000000, 6)
    size, mtime, atime, ctime, dev, ino:
    4797500748297364352 120000000 120000000 6 1050752 8589951469
    S_ISDIR: S_IFMT(mode): 0, S_IFDIR: 16384
    mode: 48
    / is not a directory

The stat values do not make any sense.  It seems that the value used for
the mode is really the numbers of links (I created the two empty
/usr/local... directories to prevent the os.error exception):

    $ ls -ldi /usr/local/lib/python2.4/>
	 2 drwxr-xr-x  48 root     root        2560 May 14 09:02 /
    253484 drwxr-xr-x   2 root     other         96 May 25 08:46
/usr/local/lib/python2.4/site-packages
    253472 drwxr-xr-x   2 root     other         96 May 25 08:46
/usr/local/lib/site-python

I'm a very beginner with Python and I'm not at all familiar with the
build structure of Python. (I just wanted to setup a Subversion
repository and to run some contributed Python hook scripts.)  It would
be very helpful if you could give me some hint in which source and
function the C stat() results are mapped to the stat values accessible
from Python.  Then I can try a bit debugging there.

- Servatius

------------------------------------------------------------------------
Servatius Brandt             Phone: +49 89 636-41504
Fujitsu Siemens Computers    Fax:   +49 89 636-48716
EP SW AD C++                 Email: Servatius.Brandt at fujitsu-siemens.com


From dan_nospam_noritzer at web.de  Tue May  3 12:04:52 2005
From: dan_nospam_noritzer at web.de (Guenter Dannoritzer)
Date: Tue, 03 May 2005 18:04:52 +0200
Subject: wxpython on cygwin for drPython - ImportError: No module named
	_core_
In-Reply-To: <d581p2$1ec$1@newshost.mot.com>
References: <d581p2$1ec$1@newshost.mot.com>
Message-ID: <d587f5$lgv$01$1@news.t-online.com>

Stephane Roy wrote:
> Hi,
> 
> Did someone installed and used successfully drPython on Cygwin? The
> installation requires
> wxpython. I tried many different alternatives (source, binary, etc) but so
> far the best I get is the following.

This might not be a direct help either, but have you considered running
the native windows python out of cygwin? I used to have the python that
comes with the cygwin installation, but ran several times into problems
with GUI base applications.

What I am doing now is have all python stuff installed as native windows
install and set the path accordingly so that I can call the interpreter
from the cygwin command line.

There might be some short comings with this way I haven't thought about
or ran into yet, but so far (for two years) I haven't run into any
problems with that.

Using this way I have developed some small GUI applications with wxPython.


Guenter



From zanesdad at bellsouth.net  Mon May  9 11:50:55 2005
From: zanesdad at bellsouth.net (Jeremy Jones)
Date: Mon, 09 May 2005 11:50:55 -0400
Subject: file corruption on windows - possible bug
In-Reply-To: <d5nu6l$qg6$1@sea.gmane.org>
References: <427F799E.2080002@bellsouth.net> <d5nu6l$qg6$1@sea.gmane.org>
Message-ID: <427F86DF.4000305@bellsouth.net>

Fredrik Lundh wrote:

>Jeremy Jones wrote:
>
>  
>
>>#################################
>>file_dict = {}
>>
>>a_list = [("a", "a%s" % i) for i in range(2500)]
>>b_list = [("b", "b%s" % i) for i in range(2500)]
>>c_list = [("c", "c%s" % i) for i in range(2500)]
>>d_list = [("d", "d%s" % i) for i in range(2500)]
>>
>>
>>joined_list = a_list + b_list + c_list + d_list
>>
>>for key, value in joined_list:
>>   outfile = file_dict.setdefault(key, open("%s.txt" % key, "w"))
>>    
>>
>
>you do realize that this opens the file again every time, so you end up having
>4x2500 file handles pointing to 4 physical files.  that's a bad idea.
>  
>
That *is* a bad idea, and no, I didn't realize that would be the result.
>From the "mapping types" page:

|a.setdefault(k[, x])| 	|a[k]| if |k in a|, else x (also setting it) 	(5)


*(5)*
    setdefault() is like get(), except that if k is missing, x is both
    returned and inserted into the dictionary as the value of k. x
    defaults to None.


I took this to mean that setdefault was a short-circuit and only created
the default object once if the dictionary didn't contain the specified
key. But I guess it's *me* who is passing setdefault a new file handle a
few thousand times :-) Ouch.

>if you replace
>
>    outfile = file_dict.setdefault(key, open("%s.txt" % key, "w"))
>
>with
>
>    outfile = file_dict.get(key)
>    if outfile is None:
>        file_dict[key] = outfile = open("%s.txt" % key, "w")
>
>or, if you prefer,
>
>    try:
>        outfile = file_dict[key]
>    except KeyError:
>        file_dict[key] = outfile = open("%s.txt" % key, "w")
>
>your code won't depend on any undefined behaviour, and will work properly
>on all platforms.
>
></F> 
>
>
>
>  
>
Thanks (and thanks to you, Duncan, for your reply as well),


Jeremy
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From beliavsky at aol.com  Tue May 24 22:34:53 2005
From: beliavsky at aol.com (beliavsky at aol.com)
Date: 24 May 2005 19:34:53 -0700
Subject: What are OOP's Jargons and Complexities?
References: <1116843761.619249.144790@g47g2000cwa.googlegroups.com>
	<bAske.14563$yx.14338@fe08.lga> <1779523.9sBn8HKUcY@yahoo.com>
	<zYFke.46627$HJ2.44911@fe11.lga> <S7Ike.935$2b.513@trndny08>
Message-ID: <1116988493.510520.199020@g47g2000cwa.googlegroups.com>

Thomas G. Marshall wrote:

> > I am not familiar with modern Fortran. Surely it at least has argument
> > prototyping by now?

Since the 1990 standard, if Fortran subroutines and functions are
placed in MODULEs, or if INTERFACEs are provided, the compiler checks
that procedures are called with the right types (int or float, scalar
or array, etc.) of arguments.

> There are some fortran advocates that pop into here now and again.  Frankly,
> I'm spooked by how far fortran seems to have come.  There is even OO support
> now.  OI.

Some Fortranners think the language has gotten too big and complicated,
sounding a bit like C programmers complaining about C++ (I don't mean
that pejoratively).



From steven.bethard at gmail.com  Thu May 19 12:40:24 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Thu, 19 May 2005 10:40:24 -0600
Subject: Convert from numbers to letters
In-Reply-To: <mailman.209.1116513780.8733.python-list@python.org>
References: <1116511005.900715.107260@o13g2000cwo.googlegroups.com>
	<mailman.209.1116513780.8733.python-list@python.org>
Message-ID: <Goydnd_ly5jmXBHfRVn-ug@comcast.com>

Bill Mill wrote:
>py> alpha = 'abcdefghijklmnopqrstuvwxyz'
>py> for i, digraph in enumerate(sorted([''.join((x, y)) for x in alpha
> ...    for y in [''] + [z for z in alpha]], key=len)):
> ...     locals()[digraph] = i + i
> ...

It would probably be better to get in the habit of writing
     globals()[x] = y
instead of
     locals()[x] = y
You almost never want to do the latter[1].  The only reason it works in 
this case is because, at the module level, locals() is globals().

You probably already knew this, but I note it here to help any newbies 
avoid future confusion.

Steve

[1] For 99% of use cases.  Modifying locals() might be useful if you're 
just going to pass it to another function as a dict.  But I think I've 
seen *maybe* 1 use case for this.


From gmane-schpam at joefrancia.com  Tue May 24 01:28:39 2005
From: gmane-schpam at joefrancia.com (Joe Francia)
Date: Tue, 24 May 2005 01:28:39 -0400
Subject: How to use protocols.msn.FileSend and protocols.msnFileReceive
In-Reply-To: <97627ec1.0505231945.79a90eaf@posting.google.com>
References: <97627ec1.0505231945.79a90eaf@posting.google.com>
Message-ID: <d6udv6$to9$1@sea.gmane.org>

yamadora1999 wrote:
> How to use protocols.msn.FileSend and FileReceive?
> Please show me a example.

Excellent example here:
http://catb.org/~esr/faqs/smart-questions.html

-- 
Soraia: http://www.soraia.com
Better than a smack in the teeth



From frederik_BCOL at vanrenterghem.biz  Wed May 18 15:12:05 2005
From: frederik_BCOL at vanrenterghem.biz (Frederik Vanrenterghem)
Date: Wed, 18 May 2005 21:12:05 +0200
Subject: Build impure modules
Message-ID: <pan.2005.05.18.19.12.02.993127@vanrenterghem.biz>

Is it possible to build Python modules like md5.so, without building the
entire python distribution? I'm working on an arm device (ipaq), and
building the whole thing would take a long time... (cross-compiling with
OpenEmbedded isn't working out either).

Thx,
-- 
Frederik Vanrenterghem            Sed quis custodiet ipsos custodes?
http://vanrenterghem.biz
GPG Fingerprint: 
966B 0E4B 25C1 CC04 E2CB 
8D4C 117F 6469 8925 BDE0 
				   



From sjmachin at lexicon.net  Tue May 31 22:23:12 2005
From: sjmachin at lexicon.net (John Machin)
Date: Wed, 01 Jun 2005 12:23:12 +1000
Subject: The need to put "self" in every method
In-Reply-To: <mailman.309.1117591682.18027.python-list@python.org>
References: <1117554344.938440.54700@g14g2000cwa.googlegroups.com>	<8c7f10c605053109376b00a342@mail.gmail.com>
	<mailman.309.1117591682.18027.python-list@python.org>
Message-ID: <429d1c10@news.eftel.com>

Skip Montanaro wrote:
>     Simon> Of course, if you *don't* use 'self', you should expect an angly
>     Simon> mob with pitchforks and torches outside your castle.
> 
> I take it an "angly mob" is a large group of stick figures? <wink>
> 
> Skip

Yep -- straw men.


From mrstephengross at hotmail.com  Thu May  5 15:14:41 2005
From: mrstephengross at hotmail.com (mrstephengross)
Date: 5 May 2005 12:14:41 -0700
Subject: How to detect a double's significant digits
In-Reply-To: <iZ-dnQ8kqqS3_uffRVn-2Q@comcast.com>
References: <1115314620.902071.323410@f14g2000cwb.googlegroups.com>
	<mailman.59.1115316262.29826.python-list@python.org>
	<1115316826.659271.247350@o13g2000cwo.googlegroups.com>
	<iZ-dnQ8kqqS3_uffRVn-2Q@comcast.com>
Message-ID: <1115320481.000911.111220@z14g2000cwz.googlegroups.com>

>This doesn't look like Python to me.  Are you sure you're on the right
newsgroup?

Er, ok, I'm an idiot. This was all supposed to be on comp.lang.c++, but
obviously I posted on the wrong one. Sorry for all the hassle. In
python, this stuff is a heck of a lot easier.

--Steve



From ville at spammers.com  Tue May 17 03:11:20 2005
From: ville at spammers.com (Ville Vainio)
Date: 17 May 2005 10:11:20 +0300
Subject: Like Christ PBBUH Prayed
References: <1116096706.696830.275140@g44g2000cwa.googlegroups.com>
	<1116278323.413749.302480@z14g2000cwz.googlegroups.com>
	<1116279629.332838.139870@g49g2000cwa.googlegroups.com>
	<1116311190.033186.294670@g44g2000cwa.googlegroups.com>
Message-ID: <du7acmu499j.fsf@lehtori.cc.tut.fi>

>>>>> "George" == George Sakkis <gsakkis at rutgers.edu> writes:

    George> "flamesrock" wrote:

    >> I don't understand.. why is everyone talking about christ on
    >> comp.lang.python? Isn't this not the place?
    >> 

    George> Maybe they know something we don't.

The information is generally reserved for 34DEG pythonistas. All will
be cleared for lower degree aspirants in due time.

-- 
Ville Vainio   http://tinyurl.com/2prnb


From Sebastien.Boisgerault at gmail.com  Wed May  4 12:14:18 2005
From: Sebastien.Boisgerault at gmail.com (=?iso-8859-1?q?S=E9bastien_Boisg=E9rault?=)
Date: 4 May 2005 09:14:18 -0700
Subject: descriptor dilemma
In-Reply-To: <1115216416.700492.71020@f14g2000cwb.googlegroups.com>
References: <1115216416.700492.71020@f14g2000cwb.googlegroups.com>
Message-ID: <1115223258.624304.198900@f14g2000cwb.googlegroups.com>


Yup ?!? Weird ... especially as:

>>> id(c.f) == id(C.__dict__['f'].__get__(c,C))
True

I was pretty sure that 'id(a) == id(b)' iff 'a is b' ...

I thought initially that you had two *copies* of the
same method bot obviously it's not true ...

SB



From here at there.net  Mon May 23 18:13:59 2005
From: here at there.net (Drazen Gemic)
Date: Tue, 24 May 2005 00:13:59 +0200
Subject: Python & DOM
Message-ID: <pan.2005.05.23.22.13.58.420581@there.net>

Hi !

I need to create a XML document using DOM. How do I set the element value,
after creating it with 'createElement' ? Documentation states that there
is a 'read-only' 'nodeValue' variable. I don't know what means 'read-only
variable' in Python, but the fact is that setting that variable does not
help.

Java DOM API has 'setNodeValue' method. Is there anything corresponding in
Python DOM ?

DG



From tiissa at nonfree.fr  Sat May 28 16:13:02 2005
From: tiissa at nonfree.fr (tiissa)
Date: Sat, 28 May 2005 22:13:02 +0200
Subject: __call__
In-Reply-To: <4298ce99$0$176$9b622d9e@news.freenet.de>
References: <42987f9a$0$26432$9b622d9e@news.freenet.de>
	<1117293143.679768.286600@g43g2000cwa.googlegroups.com>
	<4298ce99$0$176$9b622d9e@news.freenet.de>
Message-ID: <4298d0c9$0$6738$626a14ce@news.free.fr>

TK wrote:
> Sorry but it does not work.

It _does_ work. It just don't do what you expect. That's different till 
you know how to do it.

Let's see:

 >  >>> class Test(object):
 > ...     def __call__(self):
 > ...         print 'Hi'
 > ...

You first define a class whose members can be called.

 >  >>> Test()
 > <__main__.Test object at 0x3e6d0>

Then you build an instance of these class. Fine.

If you want to call this instance you have to tell python:

 >>> class Test:
...     def __init__(self):
...             print 'In init.'
...     def __call__(self):
...             print 'In call.'
...
 >>> t=Test()
In init.
 >>> t()
In call.
 >>> Test()
In init.
<__main__.Test instance at 0x401e2b6c>
 >>> Test()()
In init.
In call.
 >>>


From peter at engcorp.com  Wed May  4 16:55:36 2005
From: peter at engcorp.com (Peter Hansen)
Date: Wed, 04 May 2005 16:55:36 -0400
Subject: using tarfile with an open file object
In-Reply-To: <d5bc6t$b8r$1@vegh.ks.cc.utah.edu>
References: <d5bc6t$b8r$1@vegh.ks.cc.utah.edu>
Message-ID: <V5SdnasEz_Ruq-TfRVn-2Q@powergate.ca>

Matthew Thorley wrote:
> I've been using tarfile like this
> 
> import tarfile
> tar = tarfile.open('path_to_tar_archive', 'r:gz')
> 
> 
> But I need to use it like this:
> 
> archive = open('path_to_tar_archive', 'r')
> tar = tarfile.open(archive.readlines())
> 
> or something similar. In essence I need to use tarfile to manipulate an
> already open file object. I searched in the docs but didn't find
> anything. Maybe I just over looked the obvious.
> 
> Does any one know how to do this?

I don't know if this is in the docs (please check and submit a bug 
report if it's not), but the source shows that you should be able to do 
this:

tar = tarfile.open(fileobj=archive)

and carry on as you wish.

-Peter


From nothingcanfulfill at gmail.com  Wed May 18 02:59:50 2005
From: nothingcanfulfill at gmail.com (ncf)
Date: 17 May 2005 23:59:50 -0700
Subject: "End Of Line" Confusion
In-Reply-To: <1116396681.298692.289380@g43g2000cwa.googlegroups.com>
References: <1116370499.324399.8920@z14g2000cwz.googlegroups.com>
	<1116396681.298692.289380@g43g2000cwa.googlegroups.com>
Message-ID: <1116399590.659940.204770@g14g2000cwa.googlegroups.com>

First off, my apologies...Google Groups doesn't seem to want to let me
reply inline.

I refrained from putting the name in there as it's potentially
offensive (gotta love America). If you would aid you, I can send you
the entire Python script via. email. Editor was IDLE on Slackware Linux
using the ReiserFS Filesystem (not like the FS matters :P).

There is not a quote mark in the docstring. What I posted for the
function def is a straight-forward copy and paste.

I'll try doing a hex-dump on the file and see if there's any odd bytes
in there that shouldn't be. Yea, I think I did mean that. :P I hadn't
yet even *begun* to work on the other areas...just working on the
bit-wise math and what-not. 

-Wes



From steven.bethard at gmail.com  Thu May 19 03:03:12 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Thu, 19 May 2005 01:03:12 -0600
Subject: How to learn OO of python?
In-Reply-To: <mailman.182.1116468589.8733.python-list@python.org>
References: <mailman.130.1116402087.8733.python-list@python.org>	<1116417641.929050.30860@g14g2000cwa.googlegroups.com>
	<mailman.182.1116468589.8733.python-list@python.org>
Message-ID: <kfidnb5vPYqupxHfRVn-ow@comcast.com>

could ildg wrote:
> I think decorator is a function which return a function, is this right?
> e.g. The decorator below if from http://www.python.org/peps/pep-0318.html#id1.
> 
> def accepts(*types):
>     def check_accepts(f):
>         assert len(types) == f.func_code.co_argcount
>         def new_f(*args, **kwds):
>             for (a, t) in zip(args, types):
>                 assert isinstance(a, t), \
>                        "arg %r does not match %s" % (a,t)
>             return f(*args, **kwds)
>         new_f.func_name = f.func_name
>         return new_f
>     return check_accepts
> 
> After I saw all the examples, I concluded that every decorator must
> define an inner function which takes only one argument, the
> function to decorate. Is this right?

It's close, but not quite right.  (I will use the word "function" for 
the moment, but see below for why this is inaccurate.)  Every 
*decorator* must take only one argument, the function to decorate. It is 
not at all necessary that a decorator define an inner function. 
Consider (from [1]):

def onexit(f):
     import atexit
     atexit.register(f)
     return f

onexit is a decorator because it takes a function and returns a 
function.  In this case, it happens to be that the same function is 
accepted and returned.

Note that in the 'accepts' example above, *check_accepts* is the 
decorator, not accepts.  The accepts function is actually a function 
that *returns* decorators.

Now about that word "function".  Decorators are actually *callables* 
that accept a single *callable* and return a *callable*.  Why does the 
terminology matter?  Because I can construct decorators from classes too 
(from [2]):

class memoized(object):
    def __init__(self, func):
       self.func = func
       self.cache = {}
    def __call__(self, *args):
       try:
          return self.cache[args]
       except KeyError:
          self.cache[args] = value = self.func(*args)
          return value
       except TypeError:
          return self.func(*args)

Now the memoized decorator can be used just like any other decorator, e.g.:

@memoized
def fibonacci(n):
    if n in (0, 1):
       return n
    return fibonacci(n-1) + fibonacci(n-2)

Note however that memoized is a *callable*, not a *function*.

STeVe

[1] http://www.python.org/peps/pep-0318.html
[2] http://wiki.python.org/moin/PythonDecoratorLibrary


From tim at zope.com  Sun May 22 13:49:30 2005
From: tim at zope.com (Tim Peters)
Date: Sun, 22 May 2005 13:49:30 -0400
Subject: [ZODB-Dev] ZODB memory problems (was: processing a Very Largefile)
In-Reply-To: <e8bf7a53050522101272d789f@mail.gmail.com>
Message-ID: <20050522174935.3E5723B806F@smtp.zope.com>

[Jeremy Hylton]
> ...
> The ObjectInterning instance is another source of problem, because it's
> a dictionary that has an entry for every object you touch.

Some vital context was missing in this post.  Originally, on c.l.py, DJTB
wasn't using ZODB at all.  In effect, he had about 5000 lists each
containing about 5000 "not small" integers, so Python created about 5000**2
= 25 million integer objects to hold them all, consuming 100s of megabytes
of RAM.  However, due to the semantics of the application, there were only
about 5000 _distinct_ integers.  What became the `ObjectInterning` class
here started as a suggestion to keep a dict of the distinct integers,
effectively "intern"ing them.  That cut the memory use by a factor of
thousands.

This has all gotten generalized and micro-optimized to the point that I
can't follow the code anymore.  Regardless, the same basic trick won't work
with ZODB (or via any other way of storing the data to disk and reading it
up again later):  if we write the same "not small" integer object out
1000000 times, then read them all back in, Python will again create 1000000
distinct integer objects to hold them.  Object identity doesn't survive for
"second class" persistent objects, and interning needs to be applied again
_every_ time one is created.

[DJTB]
> ... The only thing I can't change is that ExtendedTuple inherits
> from tuple

Let me suggest that you may be jumping in at the deep ends of too many pools
at once here.

> class ExtendedTuple(tuple):
>
>    def __init__(self, els):
>        tuple.__init__(self,els)

That line doesn't accomplish anything:  tuples are immutable, and by the
time __init__ is called the tuple contents are already set forever.  You
should probably be overriding tuple.__new__ instead.

> ...
>    def __hash__(self):
>        return hash(tuple(self))

This method isn't needed.  If you leave it out, the base class
tuple.__hash__ will get called directly, and will compute the same result.



From frank at chagford.com  Sun May  1 04:34:16 2005
From: frank at chagford.com (Frank Millman)
Date: 1 May 2005 01:34:16 -0700
Subject: Best way to create temporary file?
References: <246a4e07.0504290311.7d692401@posting.google.com>
	<p%pce.71049$IN.1224311@twister2.libero.it>
Message-ID: <246a4e07.0505010034.28055fd@posting.google.com>

Frank Millman wrote:
> > Hi all
> >
> > I need to generate potentially large reports from a database, and I
> > want to offer the option of print preview before actually printing
> > (using wxPython). I figure that the best way to achieve this is to
> > write the report to a temporary file, or more likely to a temporary
> > directory with a separate file for each page. I can use that for
> > previewing and for printing, and then delete the file/directory.
> >

Fabio Pliger wrote:
>  Why create an intermediate file to preview with wxPython? I would just
> preview the data with wx and keep it inside your application. If you want to
> print it just print... avoid temp file creation if it's not necessary... :)
> 
> F.P.

It depends on what you mean, Fabio.

If a report contains sub-totals, page breaks, etc, it is not possible
to preview a particular page at random without generating the entire
report first.

It is certainly possible to store the entire report in memory, using a
two-dimensional list (page/line), but if a report runs into hundreds of
pages, I am concerned at the amount of memory this would require.
Perhaps I am being old-fashioned - with todays memory of at least 64k,
it would probably fit without a problem - but I would prefer to write
the pages away and read them back when needed.

Frank


From freddie+usenet at madcowdisease.org  Thu May 26 06:38:51 2005
From: freddie+usenet at madcowdisease.org (Freddie)
Date: Thu, 26 May 2005 20:08:51 +0930
Subject: ANN: blamehangle 0.1.0
Message-ID: <4295a742$0$3898$9a6e19ea@unlimited.newshosting.com>

(sorry if this appears several million times, Australian usenet servers are 
useless, and Newshosting seems to hate me)

blamehangle is Yet Another IRC Bot Framework. Started in 2003 as a replacement 
for a nasty perl monster, we're just now getting around to releasing it. 
Useful features include:

* Asynchronous HTTP client.
* Threaded database lookups.
* Threaded DNS lookups.
* Multiple IRC network support.
* Possibly understandable plugin deveopment model.
* Useful collection of plugins.
* Sometimes actively developed!

blamehangle is available for download from the MadCowDisease web site:
http://www.madcowdisease.org/mcd/blamehangle

Or via Subversion at:
svn://svn.madcowdisease.org/blamehangle/tags/0.1.0
svn://svn.madcowdisease.org/blamehangle/trunk (sometimes broken)


From ccurvey at gmail.com  Wed May  4 08:35:18 2005
From: ccurvey at gmail.com (Chris Curvey)
Date: 4 May 2005 05:35:18 -0700
Subject: xmlrpclib and decoding entity references
In-Reply-To: <427827a2$1_3@newspeer2.tds.net>
References: <1115132826.795008.320190@z14g2000cwz.googlegroups.com>
	<427827a2$1_3@newspeer2.tds.net>
Message-ID: <1115210118.418388.164710@g14g2000cwa.googlegroups.com>

yep, I'm using SimpleRPCServer, but something is getting messed up
between the receipt of the XML stream and the delivery to my function.
The "normal" entity references (like &lt; and &amp;) are handled OK,
but the character references are not working.  For instance,

"Andr&#xe9;" is received by the server, but it's delivered to the
function as "Andr;"

I've figured out how to parse through the string to find all the
character references and convert them back, but that seems to be
causing a ProtocolError.

Hopefully someone can lend me a clue; I really don't want to have to
switch over to SOAP and end up in WSDL hell.



From andrew.queisser at hp.com  Thu May 26 12:31:12 2005
From: andrew.queisser at hp.com (andrew.queisser at hp.com)
Date: 26 May 2005 09:31:12 -0700
Subject: Intellisense and the psychology of typing
Message-ID: <1117125072.825389.74190@g47g2000cwa.googlegroups.com>

Yesterday I typed in some C++ code that called a function with two
ints. Intellisense (auto-complete) helpfully told me that the first
formal parameter was called "frontLight" and the second "ringLight". It
occurred to me that I'm getting some semantic help here on top of the
obvious type safety. It seems to me that the existance of this kind of
support is tied to the static typing nature of  C++.

I've always been interested in the psychology behind those heated
"static" vs. "dynamic" (quotes to avoid another lengthy discussion
about manifest, latent, explicit, ...) typing debates. So I googled
"Intellisense static dynamic typing" and tried to get a view of the
collective mental landscape of this subject. It appears that the
threads that talk about Intellisense soon run dry. I'm wondering if
this is because:

1) Intellisense is really just another crutch that does more harm than
good? There were a few hardcore defenders of this position but not
many.

2) Intellisense is really useful but hard to implement well in IDEs for
dynamic languages? Can anyone comment on the status of
Intellisense-like tools for dynamic-language IDEs?

3) Users of dynamic languages are always developing/debugging running
programs where the current type of a variable is known and hence
Intellisense is possible again? My own limited experience with dynamic
languages (Ruby) is limited to edit-run cycles.

Any opinions?

Thanks,
Andrew



From donn at drizzle.com  Wed May 25 01:16:55 2005
From: donn at drizzle.com (Donn Cave)
Date: Wed, 25 May 2005 05:16:55 -0000
Subject: Manipulating mailboxes
References: None <mailman.11.1116838742.18027.python-list@python.org>
Message-ID: <1116998213.723323@yasure>

Quoth Laszlo Zsolt Nagy <gandalf at geochemsource.com>:
| I need to create a daemon that sits on a server and forwards some 
| e-mails. (Well not only that, it needs to change header information 
| before forwarding and also insert messages into a database). The mailbox 
| module is fine but I do not see a way to delete/add messages - it is 
| ready only. The other possiblity is IMAP4 but it is bad because my 
| program should not store passwords for all users.

Whether IMAP4 is actually suitable for your application I don't know,
but passwords don't have to be an issue.  If you run under the user's
ID on the mail server host, and you're using the UW imapd, you can
invoke imapd, instead of connecting to the service port, and in this
case it will be "pre-authenticated".  Protocol is the same, so you only
have to modify the imaplib module enough to give you a chance to set
up the initial connection.

	Donn Cave, donn at drizzle.com


From vmlinuz at abisen.com  Tue May  3 12:05:24 2005
From: vmlinuz at abisen.com (Anand S Bisen)
Date: Tue, 03 May 2005 11:05:24 -0500
Subject: So many things that need to be decided....
In-Reply-To: <d56nen$m7c$1@domitilla.aioe.org>
References: <G3Ade.1022$fF6.12717@news1.mts.net>
	<d56nen$m7c$1@domitilla.aioe.org>
Message-ID: <4277A144.6040807@abisen.com>

Hi

I see everybody talking about Eclipse and PyDev i have not used it but
just wanted to know how does it compares with Activestate Komodo?

thanks

Anand

Maurice LING wrote:
> Hi,
> 
> It seems that you are just starting on Python, same as my situation a 
> year ago. After almost going down the same route as you do, I tell 
> myself.... just start on something. You can decide on everything but by 
> the time you've decided, everything changes again.
> 
> Initially, I started on Java then came to Python. Ok, now you've decided 
> on Python, GUI library and Editor isn't an issue. Despite all the 
> negativities with PyDev with Eclipse, I am still using it.
> 
> I really don't see why you should lay everything in stone before you 
> start. Things may or may not fall into place. Worry about it when it 
> worries you.
> 
> "do not distress yourself with imaginings" -desiderata
> 
> Good luck.
> 
> Cheers
> maurice
> 
> Heather Stovold wrote:
> 
>>Wow - deciding to program in python sure requires a lot of decisions!
>>
>>So far:
>>
>>I've decided on python for the programming language.
>>I've decided on wxpython for the GUI....
>>I've decided on DrPython for the Editor....
>>
>>I still need to decide on a database........   I've really only used Access,
>>and my SQL skills aren't that great.  It would also need to be free....
>>Any suggestions??
>>
>>Am I going to need a program/package for a report writer?  or that might
>>depend on the database I use?
>>
>>I've never had to make so many decisions to program in my life, because I've
>>generally only had a couple of options, or those options were decided by
>>other people.
>>
>>I really appreciate the help this newsgroup has provided - both for my
>>previous post - and for the reading of other posts I've done.   I'm sure
>>I'll have a million more questions soon!
>>
>>Thanks for the help!
>>
>>Heather
>>
>>
>>
>>


From timothy at open-networks.net  Tue May 17 05:52:41 2005
From: timothy at open-networks.net (Timothy Smith)
Date: Tue, 17 May 2005 19:52:41 +1000
Subject: Windows distribution suggestions?
In-Reply-To: <200505171032.26688.tdickenson@devmail.geminidataloggers.co.uk>
References: <7x3bsmfjdg.fsf_-_@ruckus.brouhaha.com>
	<7xekc6p9tp.fsf@ruckus.brouhaha.com>
	<4289ACD8.2070207@open-networks.net>
	<200505171032.26688.tdickenson@devmail.geminidataloggers.co.uk>
Message-ID: <4289BEE9.1020902@open-networks.net>

Toby Dickenson wrote:

>On Tuesday 17 May 2005 09:35, Timothy Smith wrote:
>  
>
>>mate dont bugger around with all that. py2exe will make you a windows 
>>native exe to run. and for updates you just need to update it's 
>>library.zip.
>>    
>>
>
>py2exe is working great for me too. 
>
>  
>
>>>My app contains three different programs (say alice.py, bob.py, and
>>>carol.py) that need to be independently launchable, and a dozen or
>>>so other .py files that get imported into those first three
>>>      
>>>
>
>One tip: make sure your three top-level scripts are as empty as possible: just 
>import some other module and call a function. All your active code is then in 
>some library.zip shared between the three, and you need never change 
>alice.exe, bob.exe, and carol.exe
>
>  
>
>>use NSIS for the installer, it can do anything you want an  
>>it's free. it couldn't be more simple, shoot me an email if you
>>need more 
>>    
>>
>
>Ive not used NSIS, but I have had good results from the free WiX tools, at 
>http://sourceforge.net/projects/wix/. Documentation is poor, but examples are 
>plenty.
>
>  
>
another good one is Inno, although it's not as easy to use as NSIS. Inno 
and NSIS can do anything a commercial installer can do, Inno especially.



From bill.mill at gmail.com  Wed May 11 07:48:09 2005
From: bill.mill at gmail.com (Bill Mill)
Date: Wed, 11 May 2005 07:48:09 -0400
Subject: Python Graphing Utilities.
In-Reply-To: <87psvycqej.fsf@wilson.rwth-aachen.de>
References: <-dadnS0X7IVccR3fRVn-uQ@entouch.net>
	<797fe3d405051010392c00011f@mail.gmail.com>
	<mailman.320.1115772826.29826.python-list@python.org>
	<87psvycqej.fsf@wilson.rwth-aachen.de>
Message-ID: <797fe3d4050511044864e52e37@mail.gmail.com>

On 5/11/05, Torsten Bronger <bronger at physik.rwth-aachen.de> wrote:
> Hall?chen!
> 
> Fernando Perez <fperez.net at gmail.com> writes:
> 
> > [...]
> >
> > And I'd also second the matplotlib suggestion, to which I've by
> > now fully switched after years of faithful gnuplot usage.
> > Matplotlib is very good, has an active development community, and
> > it is designed from the ground up not only as a library for
> > rendering plots to screen/disk, but also for embedding into guis
> > (with support for Tk, WX, GTK, QT and FLTK).
> 
> Why not for Gnuplot, by the way?
> 
> On sceen, matplotlib looks extremely good, however, I still need
> Gnuplot for the hardcopy version[*].  It *seems* to me that the
> programming interfaces are quite different, so a Gnuplot backend for
> matplotlib would be helpful for me.

By hardcopy version, I assume you mean Postscript? From
http://matplotlib.sourceforge.net/fonts.html :

Postscript
Postscript, despite its age, is still a great output format. Most
publishers accept it, it scales to arbitrary resolutions, you can
import it directly into LaTeX document, and send it directly to
postscript printers.

The only requirement to generate postscript output is the Numeric
module and some AFM fonts on your system. Even the latter is only a
quasi-requirement, because matplotlib ships with some of the most
popular font files. These are Adobe Font Metric files, which have the
'*.afm' extension. matplotlib comes with it's own AFM parser to read
these files and select the best match for the font you've chosen. If
you want additional fonts, set the AFMPATH environment variable to
point to the dir containing your AFM font files. matplotlib willl
recursively search any directory in AFMPATH, so you only need to
specify a base directory if multiple subdirectories contaning '*.afm'
files.

Peace
Bill Mill
bill.mill at gmail.com

> 
> Tsch?,
> Torsten.
> 
> [*] because of the "pslatex" backend, which means that the plot is
> typeset by the same LaTeX run as your document --> consistent fonts,
> TeX-quality formulae
> --
> Torsten Bronger, aquisgrana, europa vetus
> --
> http://mail.python.org/mailman/listinfo/python-list


From fredrik at pythonware.com  Fri May  6 02:27:03 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Fri, 6 May 2005 08:27:03 +0200
Subject: How to detect a double's significant digits
References: <1115314620.902071.323410@f14g2000cwb.googlegroups.com><dOtee.706030$w62.64217@bgtnsc05-news.ops.worldnet.att.net><pan.2005.05.05.20.32.38.680014@jerf.org><117lmgrjssnlf04@corp.supernews.com>
	<pan.2005.05.06.03.02.05.806769@jerf.org>
Message-ID: <d5f6tt$ep0$1@sea.gmane.org>

Jeremy Bowers wrote:

> > A step which will require him to tell the printing routine how many digits
> > he wants printed.
>
> Not necessarily; consider the str() of a float in Python, especially given
> the "significant digits" aspect (it may be ill-defined, but I can think of
> several well-defined ways to mean that, where str() embodies one of them).
> The easiest way to tell how long the number will be when str prints it out
> is to simply ask it.

and what language is str() implemented in?

> In C++, this may be harder, as your output software may insist on
> rendering everything directly, with no way to reach in and tell what it
> did. Imagine the standard IOStreams, without the ability to stream into a
> string.

but you can stream into a string buffer, and you can use sprintf() from C++,
so what's your point, besides stating that "if things were harder, they would
be harder"?

</F>





From simonwittber at gmail.com  Tue May 31 04:25:50 2005
From: simonwittber at gmail.com (simonwittber at gmail.com)
Date: 31 May 2005 01:25:50 -0700
Subject: pickle alternative
In-Reply-To: <pan.2005.05.31.07.58.37.334894@dalkescientific.com>
References: <1117520276.417970.207680@g14g2000cwa.googlegroups.com>
	<pan.2005.05.31.07.11.10.818637@dalkescientific.com>
	<1117524878.988878.181820@g44g2000cwa.googlegroups.com>
	<pan.2005.05.31.07.58.37.334894@dalkescientific.com>
Message-ID: <1117527950.319411.193030@g44g2000cwa.googlegroups.com>



> Ahh, I had forgotten that.  Though I can't recall what an attack
> might be, I think it's because the C code hasn't been fully vetted
> for unexpected error conditions.

I tried out the marshal module anyway.

marshal can serialize small structures very qucikly, however, using the
below test value:

value = [r for r in xrange(1000000)] +
[{1:2,3:4,5:6},{"simon":"wittber"}]

marshal took 7.90 seconds to serialize it into a 5000061 length string.
decode took 0.08 seconds.

The aforementioned recipe took 2.53 seconds to serialize it into a
5000087 length string. decode took 5.16 seconds, which is much longer
than marshal!!

Sw.



From steven.bethard at gmail.com  Wed May 25 19:18:07 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Wed, 25 May 2005 17:18:07 -0600
Subject: regexp for sequence of quoted strings
In-Reply-To: <1117058353.702619.179010@z14g2000cwz.googlegroups.com>
References: <1117050058.836444.189460@o13g2000cwo.googlegroups.com>
	<yfs64x7xby7.fsf@black4.ex.ac.uk>
	<1117058353.702619.179010@z14g2000cwz.googlegroups.com>
Message-ID: <ucOdnc30iZ0tmgjfRVn-hw@comcast.com>

Paul McGuire wrote:
>>>>text = r"'the','dog\'s','bite'"
>>>>def unquote(s,l,t):
> 
> ...     t2 = t[0][1:-1]
> ...     return t2.replace("\\'","'")
> ...

Note also, that the codec 'string-escape' can be used to do what's done 
with str.replace in this example:

py> s
"'the','dog\\'s','bite'"
py> s.replace("\\'", "'")
"'the','dog's','bite'"
py> s.decode('string-escape')
"'the','dog's','bite'"

Using str.decode() is a little more general as it will also decode other 
escaped characters.  This may be good or bad depending on your needs.

STeVe


From the.ech0 at gmail.com  Wed May  4 19:33:15 2005
From: the.ech0 at gmail.com (ech0)
Date: 4 May 2005 16:33:15 -0700
Subject: Py2Exe security
In-Reply-To: <d5841n$ocp$1@bagan.srce.hr>
References: <1115121780.404491.84240@f14g2000cwb.googlegroups.com>
	<1115129613.564775.21660@g14g2000cwa.googlegroups.com>
	<117f3lk633rbs87@corp.supernews.com> <d5841n$ocp$1@bagan.srce.hr>
Message-ID: <1115249595.645525.233470@z14g2000cwz.googlegroups.com>

Keep in mind what i said, even you encrypt it the source (and decode at
run time), even if compiled via c++,c, etc., it can still be decrypted
if your using http as the protocol, all the person has to do is sniff
the packets. So if your going to encrypt your information make sure you
use a secure protocol (https).



From gabor at nekomancer.net  Mon May 30 05:13:43 2005
From: gabor at nekomancer.net (gabor)
Date: Mon, 30 May 2005 11:13:43 +0200
Subject: write to the same file from multiple processes at the same time?
In-Reply-To: <1117202905.257767.257270@g43g2000cwa.googlegroups.com>
References: <e3617$429713d7$3eb01f24$9096@news.flashnewsgroups.com>
	<1117202905.257767.257270@g43g2000cwa.googlegroups.com>
Message-ID: <e4d41$429ad9a5$3eb01f24$10471@news.flashnewsgroups.com>

jean-marc wrote:
> Sorry, why is the temp file solution 'stupid'?, (not
> aesthetic-pythonistic???) -  it looks OK: simple and direct, and
> certainly less 'heavy' than any db stuff (even embedded)
> 
> And  collating in a 'official log file' can be done periodically by
> another process, on a time-scale that is 'useful' if not
> instantaneous...
> 
> Just trying to understand here...
> 

actually this is what i implemented after asking the question, and works 
fine :)

i just thought that maybe there is a solution where i don't have to deal 
  with 4000 files in the temp folder :)

gabor


From "myname" at example.invalid  Sat May 28 19:10:54 2005
From: "myname" at example.invalid (VK)
Date: Sun, 29 May 2005 01:10:54 +0200
Subject: Getting value of radiobutton trouble
In-Reply-To: <586me.3510$4N2.2763@newssvr30.news.prodigy.com>
References: <3fs17rF9b8edU1@news.dfncis.de>
	<%35me.194$Dq7.159@newssvr11.news.prodigy.com>
	<K65me.195$Dq7.187@newssvr11.news.prodigy.com>
	<3fs6vqF9e961U1@news.dfncis.de>
	<586me.3510$4N2.2763@newssvr30.news.prodigy.com>
Message-ID: <3fsc4lF9264iU2@news.dfncis.de>

Philippe C. Martin wrote:
> Then I guess you need a TopLevel widget instead:
> 
> 
> (I still suggest you look at wxPython)
> 
> 
> from Tkinter import *
> class GetVariant:
>      def __init__(self,p):
>          self.root = p
> 
>          self.firstframe = Frame(self.root,bg="red")
>          self.firstframe.pack(side=BOTTOM,expand=1)
> 
> 
>          self.v = StringVar()
>          self.radiobutton = Radiobutton(self.firstframe,text="Variant 1",
> variable=self.v, value="Variant 1")
>          self.radiobutton.pack(side=TOP,anchor=W)
>          self.radiobutton.select()
>          self.radiobutton = Radiobutton(self.firstframe,text="Variant 2",
> variable=self.v, value="Variant 2")
>          self.radiobutton.pack(side=TOP,anchor=W)
>          self.radiobutton = Radiobutton(self.firstframe,text="Variant 3",
> variable=self.v, value="Variant 3")
>          self.radiobutton.pack(side=TOP,anchor=W)
> 
> 
> 
>          self.secondframe = Frame(self.root,bg="blue")
>          self.secondframe.pack()
>          self.var = Button(self.secondframe,text="What
> Variant",command=self.call)
>          self.var.pack(expand=1,side=BOTTOM)
> 
> 
> 
>      def call(self):
>          self.variant = self.v.get()
>          print 'Input => "%s"' % self.variant
> 
> class OneButton:
>          def __init__(self):
>              self.root = Tk()
>              Button(self.root,text="click me",command=self.getvar).pack()
>          def getvar(self):
>              self.mainframe = Toplevel(bg="yellow")
>              a=GetVariant(self.mainframe)
> 
> d = OneButton()
> d.root.mainloop()
> 
> VK wrote:
> 
> 
>>Philippe C. Martin wrote:
>>
>>>Sorry,
>>>
>>>I still had your code in my clipboard :-) here goes:
>>
>>So, your code works, but I need, that first window calls another
>>separate window. In your programm they stick together.
>>Reg, VK
>>
>>
>>>
>>>
>>>from Tkinter import *
>>>class GetVariant(Frame):
>>>     def __init__(self,p):
>>>         self.root = p
>>>         self.mainframe = Frame(self.root,bg="yellow")
>>>         self.mainframe.pack(fill=BOTH,expand=1)
>>>
>>>         self.firstframe = Frame(self.mainframe,bg="red")
>>>         self.firstframe.pack(side=BOTTOM,expand=1)
>>>
>>>
>>>         self.v = StringVar()
>>>         self.radiobutton = Radiobutton(self.firstframe,text="Variant 1",
>>>variable=self.v, value="Variant 1")
>>>         self.radiobutton.pack(side=TOP,anchor=W)
>>>         self.radiobutton.select()
>>>         self.radiobutton = Radiobutton(self.firstframe,text="Variant 2",
>>>variable=self.v, value="Variant 2")
>>>         self.radiobutton.pack(side=TOP,anchor=W)
>>>         self.radiobutton = Radiobutton(self.firstframe,text="Variant 3",
>>>variable=self.v, value="Variant 3")
>>>         self.radiobutton.pack(side=TOP,anchor=W)
>>>
>>>
>>>
>>>         self.secondframe = Frame(self.mainframe,bg="blue")
>>>         self.secondframe.pack()
>>>         self.var = Button(self.secondframe,text="What
>>>Variant",command=self.call)
>>>         self.var.pack(expand=1,side=BOTTOM)
>>>
>>>
>>>
>>>     def call(self):
>>>         print dir(self.v)
>>>         self.variant = self.v.get()
>>>         print 'Input => "%s"' % self.variant
>>>
>>>class OneButton(Frame):
>>>         def __init__(self):
>>>             self.root = Tk()
>>>             Button(self.root,text="click me",command=self.getvar).pack()
>>>         def getvar(self):
>>>             print 'HRE'
>>>             a=GetVariant(self.root)
>>>
>>>d = OneButton()
>>>d.root.mainloop()
>>>
>>>
>>>
>>>
>>>
>>>
>>>Philippe C. Martin wrote:
>>>
>>>
>>>
>>>>Hi,
>>>>
>>>>I think your second call to Tk() does it: this works although the look is
>>>>different:
>>>>
>>>>
>>>
>>>>from Tkinter import *
>>>
>>>>class GetVariant:
>>>>    def __init__(self):
>>>>        self.root = Tk()
>>>>        self.mainframe = Frame(self.root,bg="yellow")
>>>>        self.mainframe.pack(fill=BOTH,expand=1)
>>>>
>>>>        self.firstframe = Frame(self.mainframe,bg="red")
>>>>        self.firstframe.pack(side=BOTTOM,expand=1)
>>>>
>>>>        global v
>>>>        v = StringVar()
>>>>        self.radiobutton = Radiobutton(self.firstframe,text= "Variant
>>>>1", variable=v, value="Variant 1")
>>>>        self.radiobutton.pack(side=TOP,anchor=W)
>>>>        self.radiobutton.select()
>>>>        self.radiobutton = Radiobutton(self.firstframe,text= "Variant
>>>>2", variable=v, value="Variant 2")
>>>>        self.radiobutton.pack(side=TOP,anchor=W)
>>>>        self.radiobutton = Radiobutton(self.firstframe,text= "Variant
>>>>3", variable=v, value="Variant 3")
>>>>        self.radiobutton.pack(side=TOP,anchor=W)
>>>>
>>>>
>>>>
>>>>        self.secondframe = Frame(self.mainframe,bg="blue")
>>>>        self.secondframe.pack()
>>>>        self.var = Button(self.secondframe,text="What
>>>>Variant",command=self.call)
>>>>        self.var.pack(expand=1,side=BOTTOM)
>>>>
>>>>
>>>>
>>>>    def call(self):
>>>>        self.variant = v.get()
>>>>        print 'Input => "%s"' % self.variant
>>>>
>>>>class OneButton:
>>>>        def __init__(self):
>>>>            self.root = Tk()
>>>>            Button(self.root,text="click me",command=self.getvar).pack()
>>>>        def getvar(self):
>>>>            a=GetVariant()
>>>>
>>>>d = OneButton()
>>>>d.root.mainloop()
>>>>
>>>>
>>>>
>>>>
>>>>VK wrote:
>>>>
>>>>
>>>>
>>>>>Hi!
>>>>>What I'm missing in following code? Cannot get the values of
>>>>>radiobuttons. Starting only one class (GetVariant), it works. When I put
>>>>>two classes together, it doesn't.
>>>>>Regards, VK
>>>>>
>>>>
>>>>>from Tkinter import *
>>>>
>>>>>class GetVariant:
>>>>>    def __init__(self):
>>>>>        self.root = Tk()
>>>>>        self.mainframe = Frame(self.root,bg="yellow")
>>>>>        self.mainframe.pack(fill=BOTH,expand=1)
>>>>>
>>>>>        self.firstframe = Frame(self.mainframe,bg="red")
>>>>>        self.firstframe.pack(side=BOTTOM,expand=1)
>>>>>
>>>>>        global v
>>>>>        v = StringVar()
>>>>>        self.radiobutton = Radiobutton(self.firstframe,text= "Variant
>>>>>1", variable=v, value="Variant 1")
>>>>>        self.radiobutton.pack(side=TOP,anchor=W)
>>>>>        self.radiobutton.select()
>>>>>        self.radiobutton = Radiobutton(self.firstframe,text= "Variant
>>>>>2", variable=v, value="Variant 2")
>>>>>        self.radiobutton.pack(side=TOP,anchor=W)
>>>>>        self.radiobutton = Radiobutton(self.firstframe,text= "Variant
>>>>>3", variable=v, value="Variant 3")
>>>>>        self.radiobutton.pack(side=TOP,anchor=W)
>>>>>
>>>>>
>>>>>
>>>>>        self.secondframe = Frame(self.mainframe,bg="blue")
>>>>>        self.secondframe.pack()
>>>>>        self.var = Button(self.secondframe,text="What
>>>>>Variant",command=self.call)
>>>>>        self.var.pack(expand=1,side=BOTTOM)
>>>>>
>>>>>
>>>>>
>>>>>    def call(self):
>>>>>        self.variant = v.get()
>>>>>        print 'Input => "%s"' % self.variant
>>>>>
>>>>>class OneButton:
>>>>>        def __init__(self):
>>>>>            self.root = Tk()
>>>>>            Button(self.root,text="click
>>>>>            me",command=self.getvar).pack()
>>>>>        def getvar(self):
>>>>>            a=GetVariant()
>>>>>
>>>>>d = OneButton()
>>>>>d.root.mainloop()
>>>
>>>
> 
Unfortunately, I can use only TkInter and Pmw


From rrr at ronadam.com  Sun May 15 15:25:43 2005
From: rrr at ronadam.com (Ron Adam)
Date: Sun, 15 May 2005 15:25:43 -0400
Subject: Precision?
In-Reply-To: <4287565c$0$24223$636a15ce@news.free.fr>
References: <1116165159.269252.117830@g14g2000cwa.googlegroups.com>
	<4287565c$0$24223$636a15ce@news.free.fr>
Message-ID: <4287A237.7090000@ronadam.com>

tiissa wrote:
> Steffen Gl?ckselig wrote:
> 
>>>>>1.0 + 3.0 + 4.6
>>
>>8.5999999999999996
>>
>>Ehm, how could I get the intuitively 'correct' result of - say - 8.6?
>>;-)
> 
> 
> You may find annex B of the python tutorial an interesting read:
> http://docs.python.org/tut/node16.html

In addition to what you find in the above link, the round function can 
be used.

p = 1	#digits of precision after decimal
a, b, c = 1.0, 3.05, 4.6
print round(a+b+c,p)

-> 8.6

You also have the option to use the print statements '%' operator to 
format the output.


a, b, c = 1.0, 3.05, 4.6
print "%.1f"%(a+b+c)

-> 8.6


_Ron


From bogus@does.not.exist.com  Thu May 19 09:35:02 2005
From: bogus@does.not.exist.com ()
Date: Thu, 19 May 2005 13:35:02 -0000
Subject: No subject
Message-ID: <mailman.53.1572218737.3356.python-list@python.org>

#! rnews 1636
Newsgroups: comp.lang.python
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From: Harry George <harry.g.george at boeing.com>
Subject: Re: NaN support etc.
X-Nntp-Posting-Host: cola2.ca.boeing.com
Content-Type: text/plain; charset=iso-8859-1
Message-ID: <xqxwtpvjr2f.fsf at cola2.ca.boeing.com>
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Lines: 38
Sender: hgg9140 at cola2.ca.boeing.com
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Organization: The Boeing Company
References: <mailman.160.1116438390.8733.python-list at python.org> <428ba190$0$7687$9b622d9e at news.freenet.de> <1116449707.021063.132500 at g44g2000cwa.googlegroups.com>
Mime-Version: 1.0
Date: Thu, 19 May 2005 13:14:32 GMT
Xref: news.xs4all.nl comp.lang.python:378109

"S?bastien Boisg?rault" <Sebastien.Boisgerault at gmail.com> writes:

> Martin v. L?wis a ?crit :
> > Andreas Beyer wrote:
> > > How do I find out if NaN, infinity and alike is supported on the
> current
> > > python platform?
[snip]
> 
> But, practically, I have never found a platform where
> the following fpconst-like code did not work:
> 
>     import struct
>     cast = struct.pack
> 
>     big_endian = cast('i',1)[0] != '\x01'
>     if big_endian:
>        nan = cast('d', '\x7F\xF8\x00\x00\x00\x00\x00\x00')[0]
>     else:
>        nan = cast('d', '\x00\x00\x00\x00\x00\x00\xf8\xff')[0]
> 
> Can anybody provide an example of a (not too old or
> exotic) platform where this code does not behave as
> expected ?
> 
> Cheers,
> 
> SB
> 

I use fpconst too.  I've been concerned that its source home seems to
wander.  Any chance of it being added to the base distro?


-- 
harry.g.george at boeing.com
6-6M21 BCA CompArch Design Engineering
Phone: (425) 294-4718


From gsakkis at rutgers.edu  Fri May  6 13:21:36 2005
From: gsakkis at rutgers.edu (George Sakkis)
Date: 6 May 2005 10:21:36 -0700
Subject: Weird UserArray AttributeError (bug ?)
References: <1115366930.599581.118690@f14g2000cwb.googlegroups.com>
Message-ID: <1115400096.127969.164440@z14g2000cwz.googlegroups.com>

To answer my own question, the error is caused by the __setattr__
defined in UserArray:
def __setattr__(self,attr,value):
        if attr=='shape':
            self.array.shape=value
        self.__dict__[attr]=value


I'm not sure though how to "undefine" __setattr__ in a subclass so that
property lookup works correctly. The furthest I got was to remove
__setattr__ from UserArray, but this is obviously unsafe if UserArray
is going to be used alone:

delattr(UserArray,'__setattr__')

class Vector(UserArray,object):
    def __init__(self,x,y):
        UserArray.__init__(self, (x,y))

    shape = property(lambda self: self.array.shape,
                     lambda self,v: setattr(self.array,'shape',v))

    magnitude = property(lambda self: hypot(*self),
        # setting scales the vector
        lambda self,magnitude: self.__imul__(magnitude/self.magnitude))


Any alternatives to get the same effect without deleting an attribute
of the superclass ?

George



From __peter__ at web.de  Wed May  4 04:20:54 2005
From: __peter__ at web.de (Peter Otten)
Date: Wed, 04 May 2005 10:20:54 +0200
Subject: PHPParser pod Zope
References: <yttaxdmad3aa$.1cemtbg8lyvba.dlg@40tude.net>
	<4277d8ea$0$18802$636a15ce@news.free.fr>
	<1115181234.612599.83930@g14g2000cwa.googlegroups.com>
Message-ID: <d5a0k0$e7m$05$2@news.t-online.com>

George Sakkis wrote:

> ??? ? ???????? ????????? ????????? ??
> ??????? ??????, ? ??????? ?? ?????????
> ???????? ? ??????? ? ????? ??????
> ???????????? ??? ?????????...

Yeah, spreading that ole SCO source code again...

Peter 



From Wibble at Mailinator.com  Tue May 24 21:00:14 2005
From: Wibble at Mailinator.com (Wibble)
Date: Tue, 24 May 2005 21:00:14 -0400
Subject: What are OOP's Jargons and Complexities?
In-Reply-To: <3fh93fF7set5U1@news.dfncis.de>
References: <1116843761.619249.144790@g47g2000cwa.googlegroups.com>
	<bAske.14563$yx.14338@fe08.lga> <3584469.Aerji1NdQr@yahoo.com>
	<3cWdnbtAM6aZ6g_fRVn-2w@rcn.net>
	<878y24yhst.fsf@ivanova.rotty.yi.org>
	<3fh93fF7set5U1@news.dfncis.de>
Message-ID: <9tKdnT-wKq24Uw7fRVn-pA@rcn.net>

Thats how common lisp specifies a vector.

Andreas, your link indicates that lisp is a Weakly typed language not
strong.  Theres no compile time type semantics, at least in CommonLisp,
MacLisp, ZetaLisp or FranzLisp.

(setq foo #(1 2 3))
(setq foo 1)
(setq foo "Whatever")


Theres no type associated with foo, only with what the variable is
currently referencing.

 From your link:
   When the types detected or declared are strictly enforced by the
   language's semantics, the language is strongly-typed.
   when the semantics of the language allows for inconsistencies between
   the compile-time type and the run-time type, the language is
   weakly-typed.


Matthias Buelow wrote:
> Andreas Rottmann wrote:
> 
> 
>>You get terminology totally wrong here. As already said, Lisp is
>>stronger typed than C, but C is statically typed, whereas Lisp is
>>dynamically typed. In Lisp (or Scheme), all variables have types:
>>
>>(define foo #(1 2 3))
>>(vector? foo) => #t
>>(boolean? foo) => #t
> 
> 
> Hmm.. weird Scheme you're using here.
> Normally you have to quote the vector (see R5RS, 6.2.6) because it is
> not self-evaluating, and boolean? should not return true on vectors (6.3.1).
> 
> I get (on scheme48):
> 
> (define foo '#(1 2 3))
> (vector? foo)  => #t
> (boolean? foo) => #f
> 
> 
> mkb.


From dave at pythonapocrypha.com  Sat May  7 19:09:03 2005
From: dave at pythonapocrypha.com (Dave Brueck)
Date: Sat, 07 May 2005 17:09:03 -0600
Subject: plug-ins
In-Reply-To: <2a72346f3042cee824a16deebf089021@xs4all.nl>
References: <2a72346f3042cee824a16deebf089021@xs4all.nl>
Message-ID: <427D4A8F.1020707@pythonapocrypha.com>

Eric Nieuwland wrote:
> The app I'm working on keeps getting new transforms and I'm tired of 
> adding them by hand. So here it goes:
> Can anyone provide me with clues/examples/references on how to create a 
> plug-in framework?

The biggest task is defining the interface between your app and the plugins - 
you need to decide at what points plugins can interact with your application, 
what data from your application they'll need to have access to, etc. You'll also 
need to decide how your app becomes aware of new plugins - perhaps the data 
specifies it, or a config file. IOW, most of the initial work is just deciding 
on a convention you want to follow. Here is a simple example:

"Plugins are Python modules that are placed in the <app>/plugins directory. A 
plugin may optionally have an Init() function that is called when the plugin is 
first loaded. A plugin is required to have a Process() function. This function 
takes an input buffer and return a transformed output buffer."

Here's some quickie code to load a plugin (untested):

import new

def LoadPlugin(name):
   'Loads a plugin and returns a plugin module object'
   # TODO: Decide on and implement an error-handling convention
   # Create a new module
   m = new.module(name)
   source = file('plugins/%s' % name).read()
   exec source in m.__dict__

   assert hasattr(m, 'Process'), 'Plugin %s has no Process function' % name
   # Optionally run its Init function
   if hasattr(m, 'Init'):
     m.Init()

   return m

If you need plugins at different times, you could have a plugin cache:

pluginCache = {} # name -> plugin module
def GetPlugin(name):
   'Returns the named plugin from the cache, creating it if needed'
   try:
     return pluginCache[name]
   except KeyError:
     plugin = pluginCache[name] = LoadPlugin(name)
     return plugin

You might use a plugin like this:

def Transform(name, data):
   'Applies the named transform to the data and returns the result'
   plugin = GetPlugin(name)
   return plugin.Process(data)

In practice, your plugins will probably have a much richer interface. You may 
even decide to have an "application" object of some sort that you can pass to 
the plugins to provide services to them (logging facility, supporting routines 
that many plugins need, etc.). Instead of a module-based approach, you may 
instead decide that all plugins inherit from a plugin base class.

-Dave


From jdc at uwo.ca  Mon May  2 23:23:11 2005
From: jdc at uwo.ca (Dan Christensen)
Date: Mon, 02 May 2005 23:23:11 -0400
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <3dmi74F6q7m6hU2@individual.net>
References: <d4u60o$akh$1@news2.netvision.net.il>
	<mailman.47.1114818531.14961.python-list@python.org>
	<1114924100.296223.114020@g14g2000cwa.googlegroups.com>
	<1114927892.321086.60190@z14g2000cwz.googlegroups.com>
	<zX%ce.78213$ft1.5056576@phobos.telenet-ops.be>
	<Zj2de.78345$a42.5091422@phobos.telenet-ops.be>
	<mailman.6.1115001137.6583.python-list@python.org>
	<3dmi74F6q7m6hU2@individual.net>
Message-ID: <87br7tc7s0.fsf@uwo.ca>

Reinhold Birkenfeld <reinhold-birkenfeld-nospam at wolke7.net> writes:

> Dan Christensen wrote:
>> Roel Schroeven <rschroev_nospam_ml at fastmail.fm> writes:
>> 
>>> There's no level 12 yet though.
>> 
>> Now there's a 12 and a 13 (at least!).
>
> Anyone solved 12? Hints?

**hint below**


*


*


*


*


*


*


*


Look at the filename for the first image you see, and make a guess at
another filename.

Dan


From peter at engcorp.com  Mon May 16 19:06:51 2005
From: peter at engcorp.com (Peter Hansen)
Date: Mon, 16 May 2005 19:06:51 -0400
Subject: Null String Variable
In-Reply-To: <1116284293.856204.97470@g47g2000cwa.googlegroups.com>
References: <d6b27n$eai$1@nic.grnet.gr>
	<1116284293.856204.97470@g47g2000cwa.googlegroups.com>
Message-ID: <bOednV8sZ883uhTfRVn-2g@powergate.ca>

Sean McIlroy wrote:
> well, somebody's already pointed out that bool(msg)==False iff msg==''.

I may not have received the message yet, but if "iff" still means "if 
and only if", then that statement is wrong.  There are, of course, about 
a dozen things for which bool(msg) is False when msg != '', not 
including the possibility of objects that define their bool state 
however they want.

> i'm curious to know what's wrong with simply writing
> 
> if msg=='':
>     ## do_something

I'm not sure anything is wrong with it in this case, though the idiom in 
Python is generally to do just "if not msg" unless you're concerned 
about the possibility that msg is not actually a string.

-Peter


From robin at alldunn.com  Mon May 30 22:19:32 2005
From: robin at alldunn.com (Robin Dunn)
Date: Mon, 30 May 2005 19:19:32 -0700
Subject: ANN: wxPython 2.6.0.1
Message-ID: <429BC9B4.2080403@alldunn.com>

Announcing
----------

I'm pleased to announce the 2.6.0.1 release of wxPython, now available
for download at http://wxpython.org/download.php.  This release
consists mostly of bug fixes made since the 2.6.0.0 release a month
ago.


What is wxPython?
-----------------

wxPython is a GUI toolkit for the Python programming language. It
allows Python programmers to create programs with a robust, highly
functional graphical user interface, simply and easily. It is
implemented as a Python extension module that wraps the GUI components
of the popular wxWidgets cross platform library, which is written in
C++.

wxPython is a cross-platform toolkit. This means that the same program
will usually run on multiple platforms without modifications.
Currently supported platforms are 32-bit Microsoft Windows, most Linux
or other Unix-like systems using GTK or GTK2, and Mac OS X.


Changes in 2.6.0.1
------------------

Added wx.BrushFromBitmap to create a stippled brush in a single step.
Also added missing brysh style flags: wx.STIPPLE_MASK
wx.STIPPLE_MASK_OPAQUE.

wxMSW: Fix for default control colours when the system text fg colour
is not black.

wxGTK: Patch #1171754, It is now possible to have a menu item that
both has an icon and is a submenu.

wxMSW: Patch #1197009, better refreshes when windows are moved and
resized.

wxMSW: Patch #1197468.  Keeps track of pending size/position changes
in case there is more than one adjustment for a window in a single
DeferWindowPos set, then the pending values can be used for defaults
instead of current values.

Fixed the typemap that converts a Python list of strings to a
wxArrayString so it uses the wxPython default encoding.

Several docstrings added and updated.  Lots more to go.

wxMac: Strings added to the clipboard or used in DnD no longer have an
extra null character at the end.

Added wx.GetXDisplay that returns a raw swigified pointer for the X11
Display, or None for the non-X11 platforms.

wxMenu: Don't send an event when selecting an already selected radio
item.

Added wx.LaunchDefaultBrowser.

wxMSW: Fixed erroneous selection of content in wx.ComboBox when within
a wx.StaticBox.

wxMSW: Fixed alpha blitting to take into account source position.

Ensure that Python is still in an initialized state before doing any
locking or unlocking in wxPyBeginBlockThreads and wxPyEndBlockThreads
as these can be triggered after Python has been finalized in embedding
situations.

Added alternate constructors for wx.Font: wx.FontFromPixelSize,
wx.FFont, wx.FFontFromPixelSize.  See the docstrings or new api docs
for details.

Added wx.lib.hyperlink from Andrea Gavana.  It is a control like
static text that acts like a hyper-link, launching the system's
default browser in response to the clicks.

Added an optional parameter to wxversion.select that allows you to
specify that the extra components specified in the version string are
required.  For example, if you ask for "2.6-unicode" but only the ansi
version is installed then by default the ansi version will be selected
as it considered close enough since the version numbers match.  If you
want to force the options to be required then you can just add a True
parameter, like this::

	 import wxversion
	 wxversion.select("2.6-unicode", True)
	 import wx

Tweaked wx.lib.buttons such that flat buttons (e.g. have no bevel and
a wx.BORDER_NONE style flag) paint themed backgrounds if there are
transparent areas and the parent is displaying a theme.

wxMSW:  Fix for wrong sash colour of wx.SplitterWindow in the silver
theme on XP.

Added a wx.xrc.XmlResourceHandler for the Ticker class.  See
wx/lib/ticker_xrc.py

wxSTC: Fixed CmdKeyAssign key bindings for Ctrl-Backspace.

wxMSW: Fixed a bug in wx.TextCtrl where all the lines were being used
to calculate the best size, instead of using a reasonable limit.

XRCed: Use wx.GetDefaultPyEncoding/wx.SetDefaultPyEncoding for
changing active encoding.  Fixed pasting siblings (Ctrl key pressed
while pasting).

wx.lib.filebrowsebutton: Bug fix from Chad Netzer for when
self.history is None.

wx.ogl: Patch from Davide Salomoni that adds an optional point
parameter to LineShape.InsertLineControlPoint allowing one to
optionally specify where the new control point has to be drawn.

wxMSW: setting foreground colour for wx.CheckBox now works when using
XP themes.

More updates to the docview library modules and sample apps from the
ActiveGrid folks.  Their sample IDE is now able to integrate with
Subversion.

wx.grid.Grid:  Ensure that the grid gets the focus when it is
left-clicked.  Note that if you have custom widgets that handle the
EVT_LEFT_DOWN event but do not call event.Skip() then you will
probably want to add a call to self.SetFocus in the event handler.

wxGTK:  Add wxSTAY_ON_TOP support [Patch 1206023]

wx.TreeCtrl:  wx.EVT_TREE_ITEM_MENU event made consistent on all
platforms.  The location of the click or the item is included in the
event as well.

wxGTK: Setting background colour of a window now only affects the
window itself, not the borders, scrollbars, etc.  (Bug #1204069)

Print framework:  Add more paper sizes and code to fallback to an
explicit paper size if a known paper size is not found for the
printer.

wxMac: Applied patch for bug #1206181 Option-key decodes are wrong,
also applied patch for bug #1205691 Modified Fn keys don't work.

wx.Image: Fixed to preserve alpha channel in Rotate90 method.

wxMSW: Fixed incorrect background colour on wx.CheckListBox.

wxMSW: Fixed drawing of owner drawn buttons with multiline labels

Removed a bunch of unnecessary files, and removed or replaced images
that we're not sure of their origin or license.

The default DoGetBestSize is updated to not always return the current
size if the window has no sizer, children, or minsize set.  Instead
the current size is set as the minsize.  This solves the occasional
problem where a sizer may cause a childless panel to grow but never
shrink.

wxMSW: When converting a wx.Icon to a bitmap check if the icon has an
alpha channel and set the bitmap to use it.

Fixed the wrong class name used in wx.PyScrolledWindow's call to
_setCallbackInfo.

wxMSW: patch #1207202, Fixes GDI leak when using stock cursors.

wx.calendar.CalendarCtrl: Patch #1207531, Keeps the CalendarCtrl wide
enough even when the weekday names for the locale are shorter than
usual.

Made GridCellNumberEditor.StartingKey also insert the typed char when
there is a range of allowed values (so a wx.SpinCtrl is used instead
of a wx.TextCtrl.)



-- 
Robin Dunn
Software Craftsman
http://wxPython.org  Java give you jitters?  Relax with wxPython!



From claird at lairds.us  Sun May 29 08:08:05 2005
From: claird at lairds.us (Cameron Laird)
Date: Sun, 29 May 2005 12:08:05 GMT
Subject: Help with choice of suitable Architecture
References: <1117299643.380598.5540@g47g2000cwa.googlegroups.com>
	<atgh91hlophgsuio8qctrht31q03mght4b@4ax.com>
	<1117311160.307176.216430@o13g2000cwo.googlegroups.com>
	<7xr7frm704.fsf@ruckus.brouhaha.com>
Message-ID: <6hlom2-353.ln1@lairds.us>

In article <7xr7frm704.fsf at ruckus.brouhaha.com>,
Paul Rubin  <http://phr.cx at NOSPAM.invalid> wrote:
			.
			.
			.
>good reason" exception.  I dunno about "suggest".  I do see that
			.
			.
			.
<URL: http://labs.google.com//suggestfaq.html >, to ensure we're
all talking about the same thing.


From dlegault at vantpoint.com  Tue May 24 16:48:26 2005
From: dlegault at vantpoint.com (David Legault)
Date: Tue, 24 May 2005 16:48:26 -0400
Subject: Linux Python Module using PythonC/ API
References: <loom.20050524T211343-246@post.gmane.org>
	<20050524203500.GA13263@unpythonic.net>
Message-ID: <001a01c560a1$ef60d930$6f01a8c0@David>

Hi Jeff thanx for the reply

I'm a complete noob when it comes to Linux and trying to learn how to manage
the compilation process of the same objects that work on windows.

The complete linking line is this.

------------------

all: main

main: utm.o utmmodule.o
    $(CC) $(CFLAGS) -shared -fPIC -Xlinker -export-dynamic -lpython2.3 -o
utm.so

-------------------

If you could direct me into how to properly link the stuff into the .so
file, I'd appreciate it.

I will check to see if the symbols are effectively exported to the .so file.

In windows I found it pretty easy to create the module files as dlls.

Thanx

David



From lycka at carmen.se  Tue May 31 07:15:38 2005
From: lycka at carmen.se (Magnus Lycka)
Date: Tue, 31 May 2005 13:15:38 +0200
Subject: Exiting SocketServer: socket.error: (98, 'Address already in use')
In-Reply-To: <pan.2005.05.30.22.13.48.870442@dalkescientific.com>
References: <d7fkii$6pa$1@wake.carmen.se>
	<pan.2005.05.30.22.13.48.870442@dalkescientific.com>
Message-ID: <d7hh0r$vo7$1@wake.carmen.se>

Thank's a lot Andrew and Dennis.

Andrew Dalke wrote:
> You can set the class variable "allow_reuse_address = True" in
> your derived ExitableSocketServer to get the behaviour you
> expect, at the expense of some problems mentioned in the
> above URL.

Ok. I added a STOP message to my protocol, so now the client
shuts down the socket first (when it has read the STOP), and
then it seems to work much better. What I did, in case the
client gets behind, was this in my handle method: I send a STOP
message repeatedly with a delay. When the client gets the first
one, it will close the socket, and I will get an exception the
next time I try to send. This seems to work well, without
(I hope) introducing any new potential problems.

...
delay = 1
print "No more data to serve. Send STOP message."
print "Waiting for client to close socket."
while 1:
     try:
         self.request.send("STOP\n")
         time.sleep(delay)
         print '.'
     finally:
         sys.exit()


From newsgroups at jhrothjr.com  Sun May  1 22:16:40 2005
From: newsgroups at jhrothjr.com (John Roth)
Date: Sun, 1 May 2005 21:16:40 -0500
Subject: Static Methods in Python
References: <1114999599.608054.52730@f14g2000cwb.googlegroups.com>
Message-ID: <117b3fgpa19u4d8@news.supernews.com>


"Kris" <iamkris at gmail.com> wrote in message 
news:1114999599.608054.52730 at f14g2000cwb.googlegroups.com...
> Hi,
>  I am a newbie to Python. With a background in Java, I was attempting
> to write static methods in the class without the self as the first
> parameter, when I got an error. I did a search for the same on Google
> and found out that there was no consistent approach to this. I would
> like to know what is the prescribed approach for the same. Any
> thoughts, pointers about the same would be very much appreciated.

Generally, there's very little need for static methods in  Python. That
niche is better handled by module level functions. You can use real
static methods with new style classes, using the staticmethod built
in function. However, you can't reference class variables with
static methods - you should use class methods to do that. See the
Python library documentation.

John Roth
>
> Thanks,
> Kris
> 



From andre.roberge at gmail.com  Sun May  8 04:02:42 2005
From: andre.roberge at gmail.com (=?ISO-8859-1?Q?Andr=E9_Roberge?=)
Date: Sun, 08 May 2005 05:02:42 -0300
Subject: Python features
In-Reply-To: <1115536911.106882.166230@z14g2000cwz.googlegroups.com>
References: <1115536911.106882.166230@z14g2000cwz.googlegroups.com>
Message-ID: <d5kglg$3k5$1@sea.gmane.org>

waqer at yahoo.com wrote:
> To which degree python language support features of following langauage
> categories? 
> 
> Imperative, Object Oriented, Scriptig or Functional.
> 

Sounds like a homework assignment to me....  How about your do some 
research on your own, like the following:

google for "python" and "functional"; first link:
http://www-106.ibm.com/developerworks/linux/library/l-prog.html

google for "python" and "imperative"; 10th link:
http://www.everything2.com/index.pl?node=programming%20languages

Quoting from that link:
There are three main types of programming languages.

     * Imperative
     * Functional
     * Declarative

Imperative programming languages are the most commonly used languages. 
Examples of this type of language are C, C++, Ada, Fortran, Algol, Java, 
Python, Perl, and so on. Programming in an imperative language is 
generally easier than in functional or declarative languages since it 
involves a more linear process of solving problems. These languages have 
been evolving more and more toward the object-oriented paradigm.

====
etc.

Python is Object Oriented and is described most often as scripting 
language.  (search left as an exercise).

Time required to find these links: about two minutes!

Total time spent by the thousands of people that will read your message 
and this reply: say 1 minute * 1200 person / 60 (minutes/hour) = 20 
person-hour....

Andr?



From thomas at eforms.co.nz  Mon May  9 13:29:07 2005
From: thomas at eforms.co.nz (Thomas Thomas)
Date: Tue, 10 May 2005 05:29:07 +1200
Subject: urllib open error
Message-ID: <002c01c554bc$9a880f00$bb64a8c0@eformswin>

Hi 

It's seem to me that it works fine if I use hostname instead of ip address.

Note: Can anyone tell me how i reply to a question in thread, rather than starting a new one"

regards
Thomas
-------------- next part --------------
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From terjeja at gmail.com  Tue May  3 08:03:00 2005
From: terjeja at gmail.com (Terje Johan Abrahamsen)
Date: 3 May 2005 05:03:00 -0700
Subject: Py2Exe security
Message-ID: <1115121780.404491.84240@f14g2000cwb.googlegroups.com>

Hello.

We have created some programs in Python that are to be distributed
around. The programs will be made into .exe files by py2exe. However,
in the source there are certain webadresses, logins and passwords that
the programs use, that we would like to keep away from the end users.
They will use them thru the program, but we would like them not to be
extracted and used separately for other purposes.

Is the compiling by py2exe enough? I have opened all the files in the
directory py2exe has made, and have not found anything I could read in
clear text. However, that does not mean that others can not. Is it
possible to extract these passwords, adresses and logins from the
sourcecode? If py2exe is not enough, is there some other simple tools
we can use to hide the source from the endusers?

Thanks in advance.



From fredrik at pythonware.com  Wed May 25 12:29:29 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Wed, 25 May 2005 18:29:29 +0200
Subject: Trouble with regexes
References: <qu79919l7bfslbujq20km6diqr6uo2nd04@4ax.com>
Message-ID: <d7291s$u6q$1@sea.gmane.org>

Fernando Rodriguez wrote:

> I'm trying to write a regex that matches a \r char if and only if it
> is not followed by a \n (I want to translate text files from unix
> newlines to windows\dos).

Unix uses \n and Windows uses \r\n, so matching lone \r isn't
going to help you the slighest... (read on)

> I tried this, but it doesn't work:
> p = re.compile(r'(\r)[^\n]', re.IGNORECASE)
>
> it still matches a string such as r'\r\n'

really?

>>> import re
>>> p = re.compile(r'(\r)[^\n]', re.IGNORECASE)
>>> print p.match('\r\n')
None
>>> print p.match(r'\r\n')
None

on the other hand,

<_sre.SRE_Match object at 0x0083B160>
>>> print p.match('\rx')
<_sre.SRE_Match object at 0x0083B120>
>>> print p.match(r'\rx')

it might be a good idea to play a little more with ''-literals and r''-
literals (and print x and print repr(x)) until you understand exactly
how things work...

:::

> I want to translate text files from unix newlines to windows\dos

you don't need regular expressions for that; the easiest way to
convert any kind of line endings to the local format is to open the
source file with the "U" flag:

    infile = open(filename, "rU") # universal line endings
    outfile = open(outfilename, "w") # text mode is default

    s = infile.readline()
    outfile.write(s)

:::

if you're converting files from Unix format to Windows format on a
Windows box, you don't have to do anything -- just open the files
in text mode, and Python's file I/O layer will fix the rest for you.

</F>





From db3l at fitlinxx.com  Thu May  5 18:30:04 2005
From: db3l at fitlinxx.com (David Bolen)
Date: 05 May 2005 18:30:04 -0400
Subject: py2exe and library.zip
References: <mailman.76.1115095357.6583.python-list@python.org>
	<5uadnUTTqv6Iw-rfRVn-qw@powergate.ca>
	<mailman.129.1115156250.6583.python-list@python.org>
	<maednQTrx_iJLOXfRVn-hA@powergate.ca> <uzmv92v5z.fsf@fitlinxx.com>
	<zYudnQH0-MWKBOffRVn-hw@powergate.ca>
Message-ID: <uvf5x2tn7.fsf@fitlinxx.com>

Peter Hansen <peter at engcorp.com> writes:

> Good point.  When I wrote that I was picturing the form of compression
> that a .tar.gz file would have, not what is actually used inside a
> .zip file which is -- quite logically now that you point it out --
> done on a file-by-file basis.  (Clearly to do otherwise would risk
> your data and make changing compressed zips highly inefficient.)

Right, and yes, .tar.gz files are very problematic for such
algorithms, such as rsync.  In fact, there was a patch made available
for gzip (never made it ito the actual package I believe) that
permitted resetting the compression engine at selected block
boundaries - thus effectively bounding the "noise" generated by a
single change.  The output would grow a bit since resetting the engine
dropped overall efficiency, but you got a tremendous gain back in
terms of "rsyncability" of the file.

-- David


From jeffelkins at earthlink.net  Wed May 11 23:04:42 2005
From: jeffelkins at earthlink.net (jeff elkins)
Date: Thu, 12 May 2005 03:04:42 +0000
Subject: Finding startup files
In-Reply-To: <86d5rxkod4.fsf@guru.mired.org>
References: <mailman.375.1115827885.29826.python-list@python.org>
	<mailman.406.1115849233.29826.python-list@python.org>
	<86d5rxkod4.fsf@guru.mired.org>
Message-ID: <200505120304.42730.jeffelkins@earthlink.net>

On Thursday 12 May 2005 05:24 am, Mike Meyer wrote:
> jeff elkins <jeffelkins at earthlink.net> writes:
> > On Wednesday 11 May 2005 04:44 pm, Grant Edwards wrote:
> >> On 2005-05-11, hemagician at gmail.com <hemagician at gmail.com> wrote:
> >> > The following script demonstrates a method that should work for you. I
> >> > believe it is entirely cross-platform.
> >> >
> >> > #! /usr/bin/python
> >> >
> >> > import sys
> >> > import os
> >> >
> >> > print os.path.abspath(os.path.dirname(sys.argv[0]))
> >>
> >> That will probably work most of the time, but...
> >>
> >>  1) you're not gauranteed that argv[0] contains the application
> >>     path/filename.
> >>
> >>  2) the directory containing the executable is not where
> >>     configuration files are supposed to be stored under
> >>     Unix/Linux.
> >
> > Thanks Grant,
> >
> > I live and develop in Linux, but unfortunately, 99.99% of the users of
> > this particular application (analysis of medical laboratory data) will be
> > working with Windows.
>
> Yes, but Windows these days supports multiple users. Are you sure that
> you want to restrict your users to one configuration file per
> installed version of the program?
>
> I'm not sure Windows has a good solution to this problem. My
> experiences with trying to share applications between users on Windows
> haven't been very pleasant.
>
>         <mike

With this particular app, a single config file per install is required. It 
sets up parameters that may vary from laboratory to laboratory but never do 
within a single lab.

However, it might be a good idea to check the environment and if running under 
*nix store configuration (and data files, which I didn't mention) in a sane 
manner. That would solve the symlink issue anyway...

Thanks for the feedback folks,

Jeff




From steven.bethard at gmail.com  Wed May 18 16:58:23 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Wed, 18 May 2005 14:58:23 -0600
Subject: Sorting x lists based on one list ... maybe an example would
	make sense:
In-Reply-To: <0OMie.27565$VH2.6316@tornado.tampabay.rr.com>
References: <eonie.426$VB6.363@newssvr12.news.prodigy.com>
	<ssnie.428$VB6.184@newssvr12.news.prodigy.com>
	<d6d14l$5vj$00$1@news.t-online.com>
	<_Nnie.1050$5Z1.166@newssvr30.news.prodigy.com>
	<0OMie.27565$VH2.6316@tornado.tampabay.rr.com>
Message-ID: <RN6dnZMrqNbpMRbfRVn-vA@comcast.com>

Ron Adam wrote:
> You can sort your grades list however you want. If you want to sort by 
> student name instead of student_id, you would use:
> 
>     # Sort grades list by student name.
>     grades.sort(lambda x,y: cmp(students[x[1]][0], students[y[1]][0]))
> 
> Assuming the name is in the first field in the student dictionary-value 
> tuple.  There are probably other ways to do this that are more readable 
> or faster.

Assuming that students[x[1]][0] is what you want to sort on, this may 
also be written as:

     grades.sort(key=lambda x: students[x[1]][0])

It will probably be somewhat faster, but depending on the size of your 
data, you may not notice.

STeVe


From nitrogenycs at web.de  Tue May 17 12:00:29 2005
From: nitrogenycs at web.de (nitrogenycs at web.de)
Date: 17 May 2005 09:00:29 -0700
Subject: Type question
Message-ID: <1116345629.908618.165300@o13g2000cwo.googlegroups.com>

Hello,

is this call assumed to be True in any case?

result = type(SomeClass) is SomeClass

I've written a proxy class which shadows a real object. If you call
type(proxyobj) it returns the type of the proxyobject and not the type
of the shadowed object. Example:

p = proxy(shadowobj())
result1 = type(p) is shadowobj     # will return False
result2 = isinstance(p, shadowobj)   # will return True

So the first call compares the id()s of both types, while the second
calll seems to work different.
I've tried to use a proxy metaclass that creates new objects with the
name 'shadowobj'. So

print type(p)
print type(shadowobj())

will look exactly the same. however their id()s compare different and
that's why the 1st test doesn't work as I'd expect it to work.
Can somebody tell me why the id()s compare different for the same type
names? Here's the metaclass:

class ProxyMeta(type):
    def __new__(self, classname, bases, classdict):
        return type.__new__(self, 'shadowobj', bases, classdict)

class Proxy(object):
    __metaclass__ = ProxyMeta

Why is (type(Proxy) is shadowobj == False)? Shouldn't type.__new__
reuse the existing shadowobj type and increase its refcount instead of
creating a new instance of it? Then the id()s would compare the same.
So, finally, is checking for types with 'is' as shown above just wrong
and one should use isinstance or is my proxy class showing bad
behaviour or is this a bug in type.__new__?

-Matthias



From terjeja at gmail.com  Tue May  3 09:01:33 2005
From: terjeja at gmail.com (Terje Johan Abrahamsen)
Date: 3 May 2005 06:01:33 -0700
Subject: Py2Exe security
In-Reply-To: <mailman.96.1115122800.6583.python-list@python.org>
References: <1115121780.404491.84240@f14g2000cwb.googlegroups.com>
	<mailman.96.1115122800.6583.python-list@python.org>
Message-ID: <1115124297.746843.111770@g14g2000cwa.googlegroups.com>


Simon Brunning wrote:
> On 3 May 2005 05:03:00 -0700, Terje Johan Abrahamsen
<terjeja at gmail.com> wrote:
> > We have created some programs in Python that are to be distributed
> > around. The programs will be made into .exe files by py2exe.
However,
> > in the source there are certain webadresses, logins and passwords
that
> > the programs use, that we would like to keep away from the end
users.
> > They will use them thru the program, but we would like them not to
be
> > extracted and used separately for other purposes.
>
> If your program can access these details, then a suficiently
> determined attacker can access them too, regardless of what you do.

Yes, I assume so. Luckily it is not national secrets we are trying to
hide. But, how does py2exe compare with for example a program written
in a compiled language like C++? Is it easier to find the info in a
py2exe .exe than a c++ compiled c++?



From mwm at mired.org  Sun May  1 17:57:31 2005
From: mwm at mired.org (Mike Meyer)
Date: Sun, 01 May 2005 16:57:31 -0500
Subject: scope acting weird
References: <mailman.90.1114982663.14961.python-list@python.org>
Message-ID: <86wtqihano.fsf@guru.mired.org>

"Gabriel B." <gabriel.barros at gmail.com> writes:

> i have the following code:
>
> Ui.py:
> import Tkinter as Tk
> import UiMainScreen
>
> UiMainScreen.py:
> class UiMainScreen( Tk.Frame ):
>     ....
>
> and i get the following error:
>   File "UiMainScreen.py", line 1, in ?
>     class UiMainScreen(Tk.Frame):
> NameError: name 'Tk' is not defined
>
> isn't Tk supposed to be imported globaly?

No. import only affects thye module it's in. You need to add "import
Tk" to UiMainScreen.py.

> And If i import Tkinter again inside every other file, will it be
> really imported several times and be independent in each file or the
> python interpreter just use the subsequent imports to know where to
> propagate stuff?

The module is only imported once. The second and further imports link
the name Tk in the importing module to the Tk module already imported.

    <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From mwm at mired.org  Wed May  4 09:35:14 2005
From: mwm at mired.org (Mike Meyer)
Date: Wed, 04 May 2005 08:35:14 -0500
Subject: How To Reply
References: <mailman.141.1115192187.6583.python-list@python.org>
	<maednQbrx_hYL-XfRVn-hA@powergate.ca>
	<mailman.161.1115211788.6583.python-list@python.org>
Message-ID: <86sm136rn1.fsf@guru.mired.org>

Fran?ois Pinard <pinard at iro.umontreal.ca> writes:

> [Peter Hansen]
>
>> You are forced to cut and paste if you want to get the messages in a 
>> digest.  I doubt any mail program has been designed to know how to do 
>> anything smarter,
>
> Lars Magne Ingebrigtsen's wonderful Gnus (a much boosted, combined
> news/mail reader, running within or over Emacs) knows about digests.

So does the emacs VM mail reader. It bursts a digest into a collection
of submessages.

Unfortunately, digests often lose critical headers, making the reply
come out broken in some way. I've not read the python list as  a
digest, so I don't know if it will have problems or not.

        <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From sp1d3rx at gmail.com  Thu May 26 12:59:51 2005
From: sp1d3rx at gmail.com (sp1d3rx at gmail.com)
Date: 26 May 2005 09:59:51 -0700
Subject: Intellisense and the psychology of typing
In-Reply-To: <1117125072.825389.74190@g47g2000cwa.googlegroups.com>
References: <1117125072.825389.74190@g47g2000cwa.googlegroups.com>
Message-ID: <1117126791.544887.116720@g49g2000cwa.googlegroups.com>

my opinion is that if you find it useful, use it. if you don't then
don't... either way, its up to you to decide what's useful and what's
not. don't ask us. Try it out yourself.



From newsgroups at jhrothjr.com  Fri May 27 15:19:29 2005
From: newsgroups at jhrothjr.com (John Roth)
Date: Fri, 27 May 2005 13:19:29 -0600
Subject: Case Sensitive, Multiline Comments
References: <1117137316.140791.210430@g14g2000cwa.googlegroups.com><8664x5y92g.fsf@guru.mired.org>
	<429654DA.9050903@lexicon.net><1117154013.092736.298310@g14g2000cwa.googlegroups.com><qc7d9112aqr5tj8devjeaign84dc21ti8p@4ax.com><Xns96635F84E6901duncanbooth@127.0.0.1><119eccdgjtaru5d@news.supernews.com><Xns9663A707DDEF9duncanbooth@127.0.0.1>
	<mailman.191.1117214795.18027.python-list@python.org>
Message-ID: <119esm411fhf278@news.supernews.com>

"Elliot Temple" <curi at curi.us> wrote in message 
news:mailman.191.1117214795.18027.python-list at python.org...
> One other interesting thing about case sensitivity I don't think  anyone 
> has mentioned: in Python keywords are all lowercase already  (the way I 
> want to type them).  In some other languages, they aren't...

Not quite. None, True and False are upper case.

John Roth

>
> -- Elliot Temple
> http://www.curi.us/
>
>
> ---
> [This E-mail scanned for viruses by Declude Virus]
> 



From sklass at pointcircle.com  Thu May 19 14:59:00 2005
From: sklass at pointcircle.com (rh0dium)
Date: 19 May 2005 11:59:00 -0700
Subject: Convert from numbers to letters
In-Reply-To: <1116519193.037429.93560@o13g2000cwo.googlegroups.com>
References: <1116511005.900715.107260@o13g2000cwo.googlegroups.com>
	<1116519193.037429.93560@o13g2000cwo.googlegroups.com>
Message-ID: <1116529140.470352.129690@z14g2000cwz.googlegroups.com>

This is great but backwards...

Ok because you all want to know why..  I need to convert Excel columns
A2 into , [1,0] and I need a simple way to do that..

( The way this works is A->0 and 2->1 -- Yes they interchange --  So
B14 == [13,1] )

So my logic was simple convert the A to a number and then do the swap.
I didn't really care about the function so to speak it was a minor step
in the bigger picture..

By the way if you haven't played with pyXLWriter is it really good :)

So can anyone simply provide a nice function to do this?  My logic was
along the same lines as Dans was earlier - but that just seems too
messy (and ugly)

Thanks



From mail at markus-franz.de  Fri May 27 11:54:15 2005
From: mail at markus-franz.de (Markus Franz)
Date: Fri, 27 May 2005 17:54:15 +0200
Subject: cpu usage limit
In-Reply-To: <d77d4c$21a$1@solaris.cc.vt.edu>
References: <1117206216.695085.282510@g44g2000cwa.googlegroups.com>
	<d77d4c$21a$1@solaris.cc.vt.edu>
Message-ID: <d77fhg$gsv$04$1@news.t-online.com>

> Are you looping during a cpu intensive task? If so, make it sleep a bit 
> like this:
> 
> for x in cpu_task:
>     time.sleep(0.5)
>     do(x)

No, I don't use an intensive loop. I have about 1200 lines of code 
inside a process - is there nothing like

xyz.setlimit(xyz.cpu, 0.30)

???

Thank.
Markus


From poisondart985 at gmail.com  Tue May 31 23:26:55 2005
From: poisondart985 at gmail.com (poisondart)
Date: 31 May 2005 20:26:55 -0700
Subject: Software licenses and releasing Python programs for review
In-Reply-To: <87ekbore1c.fsf@pobox.com>
References: <1117245014.218831.317750@g14g2000cwa.googlegroups.com>
	<mailman.216.1117291885.18027.python-list@python.org>
	<1117324124.350474.136600@g14g2000cwa.googlegroups.com>
	<pan.2005.05.29.12.23.39.107067@REMOVETHIScyber.com.au>
	<1117392779.263376.236200@o13g2000cwo.googlegroups.com>
	<87ekbore1c.fsf@pobox.com>
Message-ID: <1117596415.792655.35320@o13g2000cwo.googlegroups.com>

> I'm a little curious about your position.
>
> Though code encodes knowledge (hence the word, of course :-), the
> system of concepts embodied in your code is not the same thing as the
> code itself.  Right?
>
> So, firstly, I don't follow your argument there: how does it follow
> from the fact that scientific and mathematical knowledge should not be
> treated by the law as - in some sense - property (a moot point of
> course, though I lean towards your view) that it doesn't 'make sense'
> (scare quotes because I'm not sure of your precise meaning) to sell
> your software for profit?

Hi,
I view my situation from the point of view of a teacher. That is, to
allude to a proverb, I'm trying to teach a person how to fish. I did
not invent the knowledge of fishing and selling this knowledge is not
what I want to do. I believe that I am putting this knowledge into a
form which I deem learnable for the student.

>
> Secondly, do you think it's a bad thing for anybody to sell software
> that makes use of the *concepts* in your code (provided that the use
> of those concepts is not restricted by financial or other legal
> means)?  If so, why?
>
>
> John

To be honest. I'm not sure. The knowledge that I learnt was all given
to me freely, I just consolidated it into these programs. I feel that
it would be unfair that along this chain of knowledge passing, one
person decided to exploit the free system and harbour his knowledge for
profit.
(Please read the next thread...)



From nitrogenycs at web.de  Wed May 11 17:51:43 2005
From: nitrogenycs at web.de (nitrogenycs at web.de)
Date: 11 May 2005 14:51:43 -0700
Subject: Proxy Design Advice Needed
Message-ID: <1115848303.630570.147840@o13g2000cwo.googlegroups.com>

Hello,

I need a way to get a notification whenever a variable of an object
changes. The approach should be non-intrusive so that I can use
existing objects without modifying them.
I want to be notified no matter who or what did change the wrapped
object - even whenever an object internal methods changes the
variables.
So I coded the piece of code shown below (just copy and paste it, it's
ready-to-run).
It's basically a Proxy class that takes an object and whenever somebody
tries to access the proxy, the proxy forwards this to the real object.
Whenever a method of the obj gets called the proxy detects this and the
operation is performed on the the proxy object so that variable change
notifications can be send.
Since I am quite new to Python and the code does not 100% what I want,
I have the feeling, it's not optimal and that there might be a better
way to achieve what I want. For example I am not sure if really all
changes will be catched this way and if the method call re-routed to
proxy object is not a bit hackish. Second, type(Proxy()) doesn't return
the same as type(WrappedObj()). The proxy should behave identical to
the wrapped object. Should I do this with metaclasses to get the type
right or are there better ways? I am not sure if they could fit here or
not.
So, what do you think of this code and how should I improve it?

Thanks a lot for your help!

-Matthias


Code (just copy and pasts and it should run):

import inspect, new, sys

class Proxy(object):
    def __init__(self, wrappedObj):
        # need to call object here to save objs to our own dict
        object.__setattr__(self,'_wrappedObj',wrappedObj)
        object.__setattr__(self,'_observers',{})

    def __getattribute__(self, name):
        # if attribute of proxy obj itself was queried return that
value
        if name in ['_wrappedObj','_observers','Subscribe','Notify']:
            return object.__getattribute__(self, name)
        # otherwise get var from the wrapped object
        attr = getattr( object.__getattribute__(self, '_wrappedObj'),
name )
        # make method use this proxy object instead of wrapped one to
catch updates
        if inspect.ismethod( attr ):
            return new.instancemethod( attr.im_func, self,
attr.im_class )
        else:
            return attr

    def __setattr__(self, name, value):
        # sets attribute of the wrapped value
        setattr(object.__getattribute__(self,'_wrappedObj'), name,
value)
        # notify me of change
        object.__getattribute__(self,'Notify')('Changed',name, value)

    # Adds an observer
    def Subscribe(self, function, event = ''):
        self._observers.setdefault(event,[]).append(function)

    # Notifies all observers
    def Notify(self, event = '', *args):
        for observer in self._observers.get(event, []):
            observer(*args)


class TestObj(object):
    classVar = 'cv'
    def __init__(self):
        self.spam = '1'

    def method(self):
        self.spam = '2'

# create a proxy
p = Proxy(TestObj())

# print some info of it
print 'Proxy: %s ' % p
print 'Class of proxy: %s' % p.__class__
print 'Type of proxy: %s  <--- this sucks' % type(p)
print 'Dir of proxy: %s' % dir(p)

# enable watching changes
p.Subscribe(lambda name, var: sys.stdout.write('%s was changed and is
now %s\n' % (name,var) ) ,'Changed')

# change some stuff
p.method()
p.cv = 'new cv'
p.spam = 1
p.func = lambda x: x-1
print p.func(2)



From ivanlan at pauahtun.org  Wed May 18 15:08:03 2005
From: ivanlan at pauahtun.org (Ivan Van Laningham)
Date: Wed, 18 May 2005 13:08:03 -0600
Subject: Is Python suitable for a huge, enterprise size app?
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>
	<jmbsl2-opn.ln1@lairds.us>
	<1116442276.918194.194110@g44g2000cwa.googlegroups.com>
Message-ID: <428B9293.3B9467C@pauahtun.org>

Hi All--

john67 wrote:
> 
> LOL!  That is really funny, in a dark humor kind of way.  I don't want
> the project to fail either.  I am not convinced that we will succeed if
> we go the Java route.  However, I am just a grunt in the chain and not
> in a position to make the decision.  I hope I can have some influence
> on the decision though.  I will be pleased if I can get someone to at
> least seriously consider Python.
> 
> I understand your sentiment about not encouraging something that might
> fail to be done in Python.  Hopefully it won't come to that.  Thanks
> for the info on Phaseit apps.
>

What you're going to run into are two major stumbling blocks.  One,
Python's got no credibility with management types unless the
credibility's already there.  "Python?  Never heard of it.  Tell me
about it.  ...   Oh, it's interpreted, is it?  Interesting."  You can
see Python going down the sewer pipes, right on their faces.  Two,
security.  "This python sounds pretty interesting.  Tell me about the
security.  How can we prevent people from stealing our source code,
which we just spent millions developing?  ...  Hmm, trust the developers
out there not to peek?  Oh, sure, let's use it."  (True, there are ways
around the second, but you're going to have to talk _very_ fast and have
ALL the answers before the management type gets to his/her office and
shuts the door in your face and on your idea.)

Metta,
Ivan
----------------------------------------------
Ivan Van Laningham
God N Locomotive Works
http://www.andi-holmes.com/
http://www.foretec.com/python/workshops/1998-11/proceedings.html
Army Signal Corps:  Cu Chi, Class of '70
Author:  Teach Yourself Python in 24 Hours


From grante at visi.com  Wed May 11 12:42:18 2005
From: grante at visi.com (Grant Edwards)
Date: Wed, 11 May 2005 16:42:18 -0000
Subject: Finding startup files
References: <mailman.375.1115827885.29826.python-list@python.org>
Message-ID: <1184dfa1uctj743@corp.supernews.com>

On 2005-05-11, jeff elkins <jeffelkins at earthlink.net> wrote:

> I'm creating an app that relies on a configuration file at
> launch. The file will always exist in the app's installation
> directory,

That's the first decision you need to examine.  If you want
work on Unix platforms, that's not where configuration files go.
If you're talking about Windows, then all bets are off and you
can ignore the rest of this post.

> but I have no control over where that might be. 

Exactly.

> Is there an OS-independent way that I can instruct the app to
> look in it's home directory for startup files?

No.  That's not even the right place to look under Unix.  If
you want to do things the "right" way under Unix, you look in
places like

 /etc/<appname>
 /etc/<appname>/whatever
 /usr/local/etc/<appname>
 /usr/local/etc/<appname>/whatever

One of the above would be used for system-wide configuration
stuff.

 $HOME/.<appname>rc
 $HOME/.<appname>/whatever

One of the above would be used for user-specific configuration
 
> Right now, I'm hard coding the path, which won't work. 

-- 
Grant Edwards                   grante             Yow!  I am covered with
                                  at               pure vegetable oil and I am
                               visi.com            writing a best seller!


From sjmachin at lexicon.net  Fri May  6 17:33:35 2005
From: sjmachin at lexicon.net (John Machin)
Date: Sat, 07 May 2005 07:33:35 +1000
Subject: hard memory limits
References: <d5f9jl$k6d$1@domitilla.aioe.org>
Message-ID: <auln71t26rjt6tuv63aitkddkm5632f4sc@4ax.com>

On Fri, 06 May 2005 18:24:21 +1000, Maurice LING <mauriceling at acm.org>
wrote:

>Hi,
>
>I think I've hit a system limit in python when I try to construct a list 
>of 200,000 elements. My error is
>
>malloc: vm_allocate (size = 2400256) failed......
>
>Just wondering is this specific to my system or what? Will adding more 
>RAM helps in this case?

Not if it's an OS limit (see other posts). Not if you are doing
something so weird or drastic that you will use up the extra RAM and
still get the same message.

If you were to reply to Fredrik's question (HOW are you creating your
list), and this one: WHAT is an "element", we might be able to help
you avoid a trip to the Apple dealer.

As a bit of a reality check for you:
[numbers based on a 32-bit machine, CPython]

An extra list of 200000 ints will take up 800000 bytes (plus small
change) if the ints are all in range(-1, 101) and thus cached --
that's a 4-byte pointer (i.e. PyObject *) each.

If all the ints are outside that range, and are distinct, they'll take
(worst case) 16 bytes each (assuming you aren't using a debug build of
Python). The additional 12 bytes are for the int object: a reference
counter, a pointer to the type object, and the actual value. So you're
looking at approx 3.2MB.

In general, reckon on each element taking up 12+sizeof(element_value).

I'd suspect that your "elements" are not quite as elementary as ints,
and/or you are doing a whole lot of *other* memory allocation. Confess
all ...

Cheers,
John






From geon at post.cz  Sat May 28 04:28:14 2005
From: geon at post.cz (pavel.kosina)
Date: Sat, 28 May 2005 10:28:14 +0200
Subject: Tkinter slowes down
Message-ID: <d79a1v$15j4$1@ns.felk.cvut.cz>

It seems to me that in my "again and again repainting canvas" script the 
rendering is slowing down as the time goes.

It is visible even after 10 seconds.
Any idea why?

-- 
geon
The exception is rule.


From jasondrew72 at gmail.com  Mon May 16 19:46:55 2005
From: jasondrew72 at gmail.com (Jason Drew)
Date: 16 May 2005 16:46:55 -0700
Subject: CGI on Windows
In-Reply-To: <mailman.64.1116277785.8733.python-list@python.org>
References: <mailman.53.1116266878.8733.python-list@python.org>
	<1116274406.666427.7680@g49g2000cwa.googlegroups.com>
	<mailman.64.1116277785.8733.python-list@python.org>
Message-ID: <1116287215.226912.190670@o13g2000cwo.googlegroups.com>


Rainer Mansfeld wrote:
> Jason Drew wrote:
> > I believe you're experiencing a bug that I also encountered, and
for
> > which there is a patch. See:
> >
http://sourceforge.net/tracker/?group_id=5470&atid=105470&func=detail&aid=1110478
> >
> > Fixing os.py as described in the patch fixed all my CGI-related
> > problems. Hope it does for you too!
> >
> > Jason
> >
>
> It did!
>
> Thanks a lot Jason.
> You just saved my mental health.
>
>    Rainer


You're welcome! (And thanks too to June Kim and Martin v. L?wis for
posting and fixing the bug, respectively, I think.)



From vegeta.z at gmail.com  Mon May  2 22:25:03 2005
From: vegeta.z at gmail.com (vegetax)
Date: Mon, 02 May 2005 22:25:03 -0400
Subject: cgi "print statement" in multithreaded enviroment?
References: <d56f4t$sch$1@sea.gmane.org> <20050503013716.GA3367@unpythonic.net>
	<d56lrn$h9u$1@sea.gmane.org>
Message-ID: <d56n1u$mal$1@sea.gmane.org>

vegetax wrote:

> Jeff Epler wrote:
> 
>> You could write something like
>>     class ThreadSpecificFile:
>>         def set_stdout(f):
>>             self.files[thread_id] = f
>>         def write(data):
>>             self.files[thread_id].write(data)
>>     sys.stdout = ThreadSpecificFile()
>> where you'll have to fill out a few more things like thread_id,
>> __init__, and a way to clean up items from self.files when a thread
>> passes away.
>> 
>> Jeff
> 
> Thats what i was looking for,Thanks =)
> 

So it would be something like this, right??


class ThreadSpecificFile:
         def __init__(s):
             self.files = []
         def set_stdout(f,thread_id):
             self.files[thread_id] = f
         def clean_up(thread_id):
             del self.files[thread_id]
         def write(data):
             self.files[thread.get_ident()].write(data)

sys.stdout = ThreadSpecificFile()




From Pidaqing at mail.iame.cn  Fri May 13 04:07:13 2005
From: Pidaqing at mail.iame.cn (=??B?xqS088fs?=)
Date: Fri, 13 May 2005 16:07:13 +0800
Subject: Ok
Message-ID: <20050514060040.2AD9D28868@mail.iame.cn>





From philippe at philippecmartin.com  Sat May  7 14:01:01 2005
From: philippe at philippecmartin.com (Philippe C. Martin)
Date: Sat, 07 May 2005 18:01:01 GMT
Subject: Encryption with Python?
References: <1115324411.952821.150780@o13g2000cwo.googlegroups.com>
	<6D5fe.1842$7U.1313@newssvr30.news.prodigy.com>
Message-ID: <xn7fe.4419$Vz4.3069@newssvr11.news.prodigy.com>

PS: remmember that single DES has been brocken. If you're also interested in
signature, this is an interesting article (a big upsate if true)
http://it.slashdot.org/article.pl?sid=05/02/16/0146218&tid=93

Regards,

Philippe
 

Philippe C. Martin wrote:

> I use http://www.amk.ca/python/code/crypto.html
> 
> Regards,
> 
> Philippe
> 
> 
> 
> Blake T. Garretson wrote:
> 
>> I want to save some sensitive data (passwords, PIN numbers, etc.) to
>> disk in a secure manner in one of my programs.  What is the
>> easiest/best way to accomplish strong file encryption in Python?  Any
>> modern block cipher will do: AES, Blowfish, etc.  I'm not looking for
>> public key stuff; I just want to provide a pass-phrase.
>> 
>> I found a few modules out there, but they seem to be all but abandoned.
>>  Most seem to have died several years ago.  The most promising package
>> is A.M. Kuchling's Python Cryptography Toolkit
>> (http://www.amk.ca/python/code/crypto.html).
>> 
>> Is this the defacto Python encryption solution?  What does everyone
>> else use?  Any other suggestions?  The SSLCrypto package
>> (http://www.freenet.org.nz/python/SSLCrypto/) may be a good alternative
>> too, but I am not sure if it is actively maintained.
>> 
>> Thanks,
>> Blake



From nothingcanfulfill at gmail.com  Tue May 17 18:44:24 2005
From: nothingcanfulfill at gmail.com (ncf)
Date: 17 May 2005 15:44:24 -0700
Subject: command to update a web page
In-Reply-To: <1116368290.299045.175160@g44g2000cwa.googlegroups.com>
References: <1116364404.542712.273200@g44g2000cwa.googlegroups.com>
	<1116368290.299045.175160@g44g2000cwa.googlegroups.com>
Message-ID: <1116369864.388173.319130@f14g2000cwb.googlegroups.com>

Ugh. Correction.

I can't begin to *act like* I know too much about this subject, ...



From edvard+news at majakari.net  Thu May 12 03:14:45 2005
From: edvard+news at majakari.net (Edvard Majakari)
Date: Thu, 12 May 2005 10:14:45 +0300
Subject: Module on Getting the Date & Time
References: <mailman.265.1115716862.29826.python-list@python.org>
Message-ID: <87y8akex0a.fsf@titan.staselog.com>

Sara Khalatbari <sarapythonlist at yahoo.com> writes:

Hi,

> Is there a Modules in Python that returns the time &
> date of today when ran?

You mean a method in a module? Yes, there's good 'ol time module, which will
probably provide what you need:

>>> import time
>>> time.time()      # number of seconds (+ fract) elapsed after 01.01.1970
1115881981.3717401
>>> time.ctime()     # current time in string format
'Thu May 12 10:13:20 2005'
>>> time.localtime() # current time as a tuple
(2005, 5, 12, 10, 13, 30, 3, 132, 1)

For details, see 'pydoc time'

-- 
# Edvard Majakari		Software Engineer
# PGP PUBLIC KEY available    	Soli Deo Gloria!

$_ = '456476617264204d616a616b6172692c20612043687269737469616e20'; print
join('',map{chr hex}(split/(\w{2})/)),uc substr(crypt(60281449,'es'),2,4),"\n";


From Maniac at SoftwareManiacs.Org  Wed May  4 08:01:48 2005
From: Maniac at SoftwareManiacs.Org (Maniac)
Date: Wed, 04 May 2005 16:01:48 +0400
Subject: Problem with pyXML DOM
In-Reply-To: <d5ac9f$j0v$02$1@news.t-online.com>
References: <d5aa59$gtr$03$1@news.t-online.com>	<mailman.151.1115205281.6583.python-list@python.org>
	<d5ac9f$j0v$02$1@news.t-online.com>
Message-ID: <4278B9AC.7000703@SoftwareManiacs.Org>

Florian Lindner wrote:

>But I don't really understand the logic:
>
>given I have the node A
>
><filename>path</filename>
>
>A.firstChild.nodeValue == path
>
>How would the second child of A look like? (ok, None in this case)
>
Yes. It's actually required by DOM standard: NodeList (which is returned 
from getElementsByTagName) should return 'null' (None in Python) on 
unknown index: 
http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/core.html#ID-844377136

> How would
>a XML fragment look like that has a second child?
>  
>
Like this for example:
<filename><child/><child/></filename>

or like this:

<filename>I'm a text child node <ElementChildNode/></filename>

>What would be the nodeValue of A?
>  
>
It's not related to children. There are several types of nodes: 
documents, elements, text, comments, processing instructions (things in 
<??>)... Their nodeValue depends on their nature.
http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/core.html#ID-844377136

>for me a child of a node is something like
>
><filename>
>  <child1 />
>  <child2 />
></filename>
>  
>
Almost :-). Here filename has actually 5 nodes:
1. text node '\n  '
2. element node 'child'
3. text node '\n  '
4. element node 'child'
5. text node '\n'

In other words: in DOM whitespace counts.


From gry at ll.mit.edu  Tue May 24 13:54:17 2005
From: gry at ll.mit.edu (gry at ll.mit.edu)
Date: 24 May 2005 10:54:17 -0700
Subject: Hacking the scope to pieces
In-Reply-To: <1116933053.924055.50250@g14g2000cwa.googlegroups.com>
References: <1116933053.924055.50250@g14g2000cwa.googlegroups.com>
Message-ID: <1116957257.695347.254290@g43g2000cwa.googlegroups.com>


Hugh Macdonald wrote:
> We're starting to version a number of our python modules here, and
I've
> written a small function that assists with loading the versioned
> modules...
>
> A module would be called something like: myModule_1_0.py
>
> In anything that uses it, though, we want to be able to refer to it
> simply as 'myModule', with an environment variable
("MYMODULE_VERSION"
> - set to "1.0") that defines the version.

Another technique that you might want to consider, is to have an
explicit
"require" call in the code, instead of an external environment
variable.
The python gtk interface, "pygtk", is used like so:

import pygtk
pygtk.require('1.5')
import gtk

-- or

import pygtk
pygtk.require('2.0')
import gtk

I imagine you could eliminate the extra "import gtk" step, by clever
coding of the import hook.  You can find pygtk at:

http://ftp.gnome.org/pub/GNOME/sources/pygtk/2.4/pygtk-2.4.1.tar.gz


> I've written a module called 'moduleLoader' with the follwing
function
> in:
>
> def loadModule(module, version, v = globals()):
>   import compiler
>   loadStr = "import %s_%s as %s" % (module, version.replace(".",
"_"),
> module)
>   eval(compiler.compile(loadStr, "/tmp/%s_%s_errors.txt" % (module,
> version.replace(".", "_")), "single"))
>   v[module] = vars()[module]
>
>
> The ideal situation with this would be to be able, in whatever
script,
> to have:
>
> import moduleLoader
> moduleLoader.loadModule("myModule", os.getenv("MODULE_VERSION"))
>
>
> However, this doesn't work. The two options that do work are:
>
> import moduleLoader
> moduleLoader.loadModule("myModule", os.getenv("MODULE_VERSION"),
> globals())
>
>
> import moduleLoader
> moduleLoader.loadModule("myModule", os.getenv("MODULE_VERSION"))
> from moduleLoader import myModule
>
>
> What I'm after is a way of moduleLoader.loadModule working back up
the
> scope and placing the imported module in the main global scope. Any
> idea how to do this?
> 
> 
> --
> Hugh Macdonald



From skip at pobox.com  Thu May 12 10:10:16 2005
From: skip at pobox.com (Skip Montanaro)
Date: Thu, 12 May 2005 09:10:16 -0500
Subject: pyvm -- faster python
In-Reply-To: <86y8alkswy.fsf@guru.mired.org>
References: <mailman.164.1115548611.29826.python-list@python.org>
	<1115561483.741761.212140@f14g2000cwb.googlegroups.com>
	<m102l2-9qr.ln1@home.rogerbinns.com>
	<mailman.264.1115716603.29826.python-list@python.org>
	<vu38l2-k5v.ln1@home.rogerbinns.com>
	<mailman.333.1115805199.29826.python-list@python.org>
	<86y8alkswy.fsf@guru.mired.org>
Message-ID: <17027.25544.793793.163694@montanaro.dyndns.org>


    >> - hacking SWIG.  Shouldn't be too hard and will instantly give
    >> us access to wx, qt, etc.

    Mike> You can't assume that because some package is a C/C++ library
    Mike> wrapped for Python that it uses SWIG. pyqt, for example, doesn't
    Mike> use SWIG at all. It uses SIP, which is considerably more
    Mike> complicated than SWIG.

PyGTK uses its own lisp-y thing as the wrapper IDL. Actually, it's specific
to GTK and is AFAIK is used to wrap GTK by languages besides Python.

Skip



From sjmachin at lexicon.net  Wed May 18 16:38:59 2005
From: sjmachin at lexicon.net (John Machin)
Date: Thu, 19 May 2005 06:38:59 +1000
Subject: Comparing 2 similar strings?
References: <24a6d$428b9c10$d1b717f8$2300@PRIMUS.CA>
	<428BA05D.1010600@lsupcaemnt.com>
Message-ID: <3d9n815cpmavos1fl6ts712h9qogdv3fur@4ax.com>

On Wed, 18 May 2005 15:06:53 -0500, Ed Morton <morton at lsupcaemnt.com>
wrote:

>
>
>William Park wrote:
>
>> How do you compare 2 strings, and determine how much they are "close" to
>> each other?  Eg.
>>     aqwerty
>>     qwertyb
>> are similar to each other, except for first/last char.  But, how do I
>> quantify that?
>> 
>> I guess you can say for the above 2 strings that
>>     - at max, 6 chars out of 7 are same sequence --> 85% max
>> 
>> But, for
>>     qawerty
>>     qwerbty
>> max correlation is
>>     - 3 chars out of 7 are the same sequence --> 42% max
>> 
>> (Crossposted to 3 of my favourite newsgroup.)
>>
>
>"However you like" is probably the right answer, but one way might be to 
>compare their soundex encoding 
>(http://foldoc.doc.ic.ac.uk/foldoc/foldoc.cgi?soundex) and figure out 
>percentage difference based on comparing the numeric part.
>

Fantastic suggestion. Here's a tiny piece of real-life test data:

compare the surnames "Mousaferiadis" and "McPherson".








From mrmaple at gmail.com  Wed May 25 16:43:20 2005
From: mrmaple at gmail.com (James Carroll)
Date: Wed, 25 May 2005 16:43:20 -0400
Subject: using a com automation object (how do I avoid crash?)
Message-ID: <b273c74105052513434dcd7890@mail.gmail.com>

I'm trying to call functions on an automation object, and I've run
makepy to generate a wrapper, and 99% of the calls I make on the
wrapper work great.

my question is: Is my [''] * 10  as close as I can come to a variant
array of pre-allocated empty strings?

I'm trying to call a function called EnumerateCameras

m.ShowLiveWindow(True)    <--- this works
cams = [''] * 10
m.EnumerateCameras(cams)
<CRASH!>

The documentation that I have for the function says:

HRESULT EnumerateCameras
(
    [in,out] VARIANT * pvBstrArray, 
    [out,retval] VARIANT_BOOL *pbSuccess 
);

Parameters

pvBstrArray	- Location of VARIANT array to read list of MicroFIRE
cameras into.  Array must 	be pre-allocated with empty strings before
calling this function.


Is my [''] * 10  as close as I can come to a variant array of
pre-allocated empty strings?

Thanks,
-Jim


From bokr at oz.net  Sun May 15 22:05:32 2005
From: bokr at oz.net (Bengt Richter)
Date: Mon, 16 May 2005 02:05:32 GMT
Subject: Is isinstance always "considered harmful"?
References: <1116157672.683839.49700@o13g2000cwo.googlegroups.com>
	<mailman.0.1116194942.8733.python-list@python.org>
Message-ID: <4287fb54.30249907@news.oz.net>

On Sun, 15 May 2005 14:31:21 -0400, "Terry Reedy" <tjreedy at udel.edu> wrote:

>
>"Jordan Rastrick" <jrastrick at student.usyd.edu.au> wrote in message 
>news:1116157672.683839.49700 at o13g2000cwo.googlegroups.com...
>
>> I've read arguments, here and elsewhere, to the effect that in Python
>> isinstance should be avoided like the plague, except in a few very
>> specific and narrow circumstances.
>
>Putting it like this is rather extreme.
>
>> Roughly speaking, due in part to
>> Python's dynamic nature its better to concern yourself only with the
>> interface an object provides, and not whether it happens to inherit
>> from a given base class.
>
>To my mind, your example of using isinstance to select a better (such as 
>speedier) subalgorithm for a special case is not just fine, but good 
>programming.  (Selecting a subalgorithm that works more robustly is also a 
>good reason for special casing.)  It is an internal matter whose externally 
>visible effect is to improve performance.
I agree, but I am also a little uncomfortable about such performance tuning,
unless the assumptions it depends on are prominently documented or even
validated with an assert or explicit warning. Otherwise the next version
of the interpreter or a library module could change the optimal decision,
and a bad optimization decision could be locked in for the new version.

Maybe there should be another testable condition like __debug__ except for
testing (e.g. __testing__ ;-) which could be used to introduce temporary
alternative code (such as alternate optimization decisions) so that system
tests could be used to validate locking in one decision or another for a
new system version being tested.

For trivial personally maintained code, a one-line version check with a
reminder exception to re-visit the optimization or whatever decision
(and revise the version check for next time) could cheaply prevent hidden
lock-in of bad optimization etc.

>
>Using isinstance to unnecessarily narrow the domain is quite different.  It 
>has the externally visible effect of degrading performance (to a nullity) 
>for arguments that the user might reasonably want to work.
Agreed, but the key thing there is to define "unnecessarily" ;-)

Regards,
Bengt Richter


From cal_2pac at yahoo.com  Thu May 19 15:02:25 2005
From: cal_2pac at yahoo.com (cal_2pac at yahoo.com)
Date: 19 May 2005 12:02:25 -0700
Subject: How to receive events (eg. user mouse clicks) from IE
In-Reply-To: <428c3cbe$1_1@spool9-west.superfeed.net>
References: <1116476411.853695.235670@g14g2000cwa.googlegroups.com>
	<428c3cbe$1_1@spool9-west.superfeed.net>
Message-ID: <1116529345.146032.91880@f14g2000cwb.googlegroups.com>

Hi
Thanks for the response and for the code.
However, I want to trap events like mouse click on the HTML document
loaded by the web browser control. The code mentioned below provides
events from the web browser control. I need to find out on which
particular HTML tag did the user click for example.
How do I find that out? There should be some way to refer to a document
from a given web browser control and start receiving events from it


Roger Upole wrote:
> The two you'll need to run makepy for are Microsoft Internet Controls
and
> Microsoft HTML object Library.  If you run them manually, you should
be
> able to look at the generated code to get the guids.
> Here's a minimal example:
>
> import win32com.client
>
>
ie_mod=win32com.client.gencache.EnsureModule('{EAB22AC0-30C1-11CF-A7EB-0000C05BAE0B}',0,

> 1, 1)
> class IE_Events(ie_mod.DWebBrowserEvents2):
>     def OnNavigateComplete2(self, pDisp, URL):
>         print 'OnNavigateComplete2:', URL
>
>
ie=win32com.client.DispatchWithEvents('InternetExplorer.Application',IE_Events)
> ie.Visible=1
> ie.Navigate('http://www.google.com')
>
>    hth
>       Roger
>
>
> <cal_2pac at yahoo.com> wrote in message
> news:1116476411.853695.235670 at g14g2000cwa.googlegroups.com...
> >I am trying to trap events from internet explorer eg. when user
clicks
> > on an html link - I need to get notified for that event.
> >
> > After looking through the newgroups / internet and reading through
> > various sections in programming python on win32 - I understand that
> > this can be done using DispatchWithEvents.
> > I have also referred to discussions on comp.lang.python
> >
http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/a3c502d06412a5f8/0ee3083e71316da7?q=dispatchwithevents&rnum=43#0ee3083e71316da7
> >
> > and
> >
> >
http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/1da0668794851296/5bcec1fda216c598?q=dispatchwithevents&rnum=19#5bcec1fda216c598
> >
> > So far - none of the newgroups postings report that IE events were
> > trapped successfully (at least I could not find any). However,
there is
> > enough evidence that it can be done.
> > My problems at the moment:
> > a) The examples use early binding. However, I cannot get Python
makepy
> > to generate the code to force makepy process at run time - since
COM
> > makepy utility that I invoke from python win 32 does not have any
entry
> > for internet explorer.
> > I tried to find the CLSID for IE
3050F613-98B5-11CF-BB82-00AA00BDCE0B
> > but I get an exception
> > b) Also one of the examples suggest that following code should work
> >
> >> mod = EnsureModule(...)
> >
> >> class MyEvents(mod.IDocumentEvents):
> >>    # your methods here....
> >
> >> handler = MyEvents(ie.document)
> >
> >> # handler should start recieving events.
> >
> > however, what CLSID is to be used in EnsureModule... . I tried with
a
> > few but I always get the error 'NoneType' object has no attribute
> > 'IDocumentEvents'
> >
> >
> > An example that 'works' will be very useful
> >
>
>
>
> ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet
News==----
> http://www.newsfeeds.com The #1 Newsgroup Service in the World!
120,000+ Newsgroups
> ----= East and West-Coast Server Farms - Total Privacy via Encryption
=----



From roccomoretti at hotpop.com  Mon May 23 09:50:07 2005
From: roccomoretti at hotpop.com (Rocco Moretti)
Date: Mon, 23 May 2005 08:50:07 -0500
Subject: first release of PyPy
In-Reply-To: <mailman.9.1116831944.18027.python-list@python.org>
References: <mailman.264.1116625088.8733.python-list@python.org>	<1116629407.638782.145950@g47g2000cwa.googlegroups.com>
	<mailman.9.1116831944.18027.python-list@python.org>
Message-ID: <d6sn2f$18d$1@news.doit.wisc.edu>

Alex Stapleton wrote:
> The question still remains, can it run it's self? ;)
> 

I think they try, every once in a while, to self host. The only problem 
at this stage of the game is the ~2000x speed slowdown. Using that 
figure, a five second startup time for PyPy on CPython would take about 
3 hours for PyPy on PyPy on CPython (5s*2000). Running a 1 second (on 
CPython) Python program would take a month and a half for PyPy on PyPy 
on CPython. (1s*2000*2000)

Once they get the speed issue licked, the self hosting problems should 
be no trouble. ;)


From steven.bethard at gmail.com  Wed May 11 16:49:00 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Wed, 11 May 2005 14:49:00 -0600
Subject: optparse
In-Reply-To: <1115843600.174250.16770@f14g2000cwb.googlegroups.com>
References: <1115841250.764632.296820@g47g2000cwa.googlegroups.com>
	<sPKdnV13ANzA9B_fRVn-iQ@comcast.com>
	<1115843600.174250.16770@f14g2000cwb.googlegroups.com>
Message-ID: <w7ednaqywpQj8h_fRVn-3Q@comcast.com>

S?bastien Boisg?rault wrote:
> Steven Bethard wrote:
> 
>>S?bastien Boisg?rault wrote:
>>
>>>Any idea why the 'options' object in
>>>
>>># optparse stuff
>>>(options, args) = parser.parse_args()
>>>
>>>is not/couldn't be a real dict ? Or why at least it
>>>does not support dict's usual methods ?
>>
>>Well, it's not a real dict because the original API intends it to be
>>used as object attributes.
> 
> Sure ;). But what are the pros of this choice ? The option __str__
> mimicks the behavior of a dict. Why not a full interface support
> of it ?

Well one reason might be that it's easy to convert from an object's 
attributes to a dict, while it's hard to go the other direction:

py> options.x, options.y
('spam', 42)
py> vars(options) # convert to dict
{'y': 42, 'x': 'spam'}

versus

py> options['x'], options['y']
('spam', 42)
py> o = ??? # convert to object???
...
py> o.x, o.y
('spam', 42)

Though I had been working on a namespace module[1] with Nick Coghlan and 
Carlos Ribeiro that provided such behavior:

py> options['x'], options['y']
('spam', 42)
py> o = namespace.Namespace(options)
py> o
Namespace(x='spam', y=42)
py> o.x, o.y
('spam', 42)

However, the namespace module is not part of the Python stdlib, so by 
providing an object with attributes instead of a dict, optparse supports 
(using only builtin functions) both users that want an object with 
attributes and users that want a dict.

STeVe

[1] http://namespace.python-hosting.com/


From bronger at physik.rwth-aachen.de  Sat May 14 09:13:14 2005
From: bronger at physik.rwth-aachen.de (Torsten Bronger)
Date: Sat, 14 May 2005 15:13:14 +0200
Subject: Build-in or user-defined exceptions?
Message-ID: <87mzqykl1x.fsf@wilson.rwth-aachen.de>

Hall?chen!

I write a module, and so I must raise exceptions at several points.
The PEP 8 says that a module should define their own exceptions base
class, derived from "Exception", and derivatives of that.

However, the build-in exceptions cover most of the error types that
occur in a standard program.  For example, my module communicates
with measurement instruments, so any communication error would fit
perfectly to the build-in "IOError", wouldn't it?  Invalid arguments
can raise "TypeError"s, and so on and so forth.

Is it considered good style to raise build-in exceptions whereever
one thinks it's appropriate?  Is the definition of module exceptions
derived from "IOError", "TypeError" etc. a good idea?  Is there some
sort of style guide for recommended exceptions design in Python?

Thank you!

Tsch?,
Torsten.

-- 
Torsten Bronger, aquisgrana, europa vetus


From ajsiegel at optonline.com  Mon May 30 08:24:35 2005
From: ajsiegel at optonline.com (Arthur)
Date: Mon, 30 May 2005 08:24:35 -0400
Subject: Case Sensitive, Multiline Comments
References: <1117137316.140791.210430@g14g2000cwa.googlegroups.com>
	<8664x5y92g.fsf@guru.mired.org>
Message-ID: <c01m91tb93p4b0ldaurvnth65htubg5sf6@4ax.com>

On Thu, 26 May 2005 16:24:39 -0500, Mike Meyer <mwm at mired.org> wrote:

>"Elliot Temple" <curi42 at gmail.com> writes:
>
>> Hi I have two questions.  Could someone explain to me why Python is
>> case sensitive? I find that annoying.
>
>Because it comes from a language background of case sensitive
>languages (C, shell, etc.). But read what the BDFL has to say about
>it: <URL:
>http://mail.python.org/pipermail/python-list/2001-July/054788.html >

As Guido's statement on his position on case sensitivity/insensitivity
cited above was in response to a post/provocation of mine, its gives
me, and I shall indulge myself in, an opportunity to partake of a
favorite pasttime - venting,

I will make it short:

It gauls the hell out of me that that the Python community mass "head"
was in such a strange place at that moment that I had to take the pose
of maniacal extremist to have a sensible converstaion.

Or that's the history I am writing, in any case.

Art 



From python-url at phaseit.net  Mon May 16 10:08:03 2005
From: python-url at phaseit.net (Simon Brunning)
Date: Mon, 16 May 2005 14:08:03 GMT
Subject: Dr. Dobb's Python-URL! - weekly Python news and links (May 16)
Message-ID: <d6a78r$d9r$1@lairds.us>

QOTW: "As you learn Python, you will find that your PHP code will
improve, possibly becoming more and more concise until it disappears
completely." - Jorey Bump

(Responding to a quotaton of Sturgeon's law: "Ninety percent of
everything is crap.") "fwiw, this is of course why google displays 10
results on the first page. according to the law, one of them is always
exactly what you want." - Fredrik Lundh


    Testing for an empty iterator:
        http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/413614
        
    Python email libraries, part 1: POP3:
        http://www.devshed.com/c/a/Python/Python-Email-Libraries-part-1-POP3/
        
    Solipsis, a peer-to-peer system for a massively multi-participant virtual
    world:
        http://solipsis.netofpeers.net/wiki/HomePage/
        
    Twisted reStructuredText server:
        http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/413609
        
    How can Python's documentation be improved?
        http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/d96afc7dd63cbe24
        
    Static typing exposed:
        http://seanmcgrath.blogspot.com/archives/2005_05_08_seanmcgrath_archive.html#111597032916040577
        
    Finding Unique Elements in a List:
        http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/3011d698d9b764f2
        
    Diving into PyParsing:
        http://www.advogato.org/person/titus/diary.html?start=89
        
    Notable releases:
        PyGTK 2.6.2:
            http://www.pygtk.org/
        Python for .NET 1.0 RC1
            http://www.zope.org/Members/Brian/PythonNet
        

========================================================================
Everything Python-related you want is probably one or two clicks away in
these pages:

    Python.org's Python Language Website is the traditional
    center of Pythonia
        http://www.python.org
    Notice especially the master FAQ
        http://www.python.org/doc/FAQ.html

    PythonWare complements the digest you're reading with the
    marvelous daily python url
         http://www.pythonware.com/daily  
    Mygale is a news-gathering webcrawler that specializes in (new)
    World-Wide Web articles related to Python.
         http://www.awaretek.com/nowak/mygale.html 
    While cosmetically similar, Mygale and the Daily Python-URL
    are utterly different in their technologies and generally in
    their results.

    For far, FAR more Python reading than any one mind should
    absorb, much of it quite interesting, several pages index
    much of the universe of Pybloggers.
	http://lowlife.jp/cgi-bin/moin.cgi/PythonProgrammersWeblog
        http://www.planetpython.org/
        http://mechanicalcat.net/pyblagg.html

    comp.lang.python.announce announces new Python software.  Be
    sure to scan this newsgroup weekly.
        http://groups.google.com/groups?oi=djq&as_ugroup=comp.lang.python.announce

    Steve Bethard, Tim Lesher, and Tony Meyer continue the marvelous
    tradition early borne by Andrew Kuchling, Michael Hudson and Brett
    Cannon of intelligently summarizing action on the python-dev mailing
    list once every other week.
	http://www.python.org/dev/summary/

    The Python Package Index catalogues packages.
        http://www.python.org/pypi/

    The somewhat older Vaults of Parnassus ambitiously collects references
    to all sorts of Python resources.
        http://www.vex.net/~x/parnassus/   

    Much of Python's real work takes place on Special-Interest Group
    mailing lists
        http://www.python.org/sigs/

    The Python Business Forum "further[s] the interests of companies
    that base their business on ... Python."
	http://www.python-in-business.org

    Python Success Stories--from air-traffic control to on-line
    match-making--can inspire you or decision-makers to whom you're
    subject with a vision of what the language makes practical.
        http://www.pythonology.com/success

    The Python Software Foundation (PSF) has replaced the Python
    Consortium as an independent nexus of activity.  It has official
    responsibility for Python's development and maintenance. 
        http://www.python.org/psf/
    Among the ways you can support PSF is with a donation.
        http://www.python.org/psf/donate.html

    Kurt B. Kaiser publishes a weekly report on faults and patches.
        http://www.google.com/groups?as_usubject=weekly%20python%20patch
       
    Cetus collects Python hyperlinks.
        http://www.cetus-links.org/oo_python.html

    Python FAQTS
        http://python.faqts.com/

    The Cookbook is a collaborative effort to capture useful and
    interesting recipes.
	http://aspn.activestate.com/ASPN/Cookbook/Python

    Among several Python-oriented RSS/RDF feeds available are
	http://www.python.org/channews.rdf
	http://bootleg-rss.g-blog.net/pythonware_com_daily.pcgi
	http://python.de/backend.php
    For more, see
	http://www.syndic8.com/feedlist.php?ShowMatch=python&ShowStatus=all
    The old Python "To-Do List" now lives principally in a
    SourceForge reincarnation.
        http://sourceforge.net/tracker/?atid=355470&group_id=5470&func=browse
        http://python.sourceforge.net/peps/pep-0042.html
     
    The online Python Journal is posted at pythonjournal.cognizor.com.
    editor at pythonjournal.com and editor at pythonjournal.cognizor.com
    welcome submission of material that helps people's understanding
    of Python use, and offer Web presentation of your work.

    del.icio.us presents an intriguing approach to reference commentary.
    It already aggregates quite a bit of Python intelligence.
        http://del.icio.us/tag/python

    *Py: the Journal of the Python Language*
        http://www.pyzine.com

    Archive probing tricks of the trade:
        http://groups.google.com/groups?oi=djq&as_ugroup=comp.lang.python&num=100
        http://groups.google.com/groups?meta=site%3Dgroups%26group%3Dcomp.lang.python.*

Previous - (U)se the (R)esource, (L)uke! - messages are listed here:
  http://www.ddj.com/topics/pythonurl/ (requires subscription)
  http://groups-beta.google.com/groups?q=python-url+group:comp.lang.python*&start=0&scoring=d&
  http://purl.org/thecliff/python/url.html (dormant)
or
  http://groups.google.com/groups?oi=djq&as_q=+Python-URL!&as_ugroup=comp.lang.python


Suggestions/corrections for next week's posting are always welcome.
E-mail to <Python-URL at phaseit.net> should get through.

To receive a new issue of this posting in e-mail each Monday morning
(approximately), ask <claird at phaseit.net> to subscribe.  Mention
"Python-URL!".


-- The Python-URL! Team--

Dr. Dobb's Journal (http://www.ddj.com) is pleased to participate in and
sponsor the "Python-URL!" project.




From lbates at syscononline.com  Wed May 25 09:48:42 2005
From: lbates at syscononline.com (Larry Bates)
Date: Wed, 25 May 2005 08:48:42 -0500
Subject: can't see timer in emacs action
In-Reply-To: <1117023204.530512.18390@g43g2000cwa.googlegroups.com>
References: <1117023204.530512.18390@g43g2000cwa.googlegroups.com>
Message-ID: <X76dnR7D655mHAnfRVn-iQ@comcast.com>

I don't know about emacs, but this works in PythoWin IDE.

import time
import sys
for i in range(20):
    sys.stdout.write(str(i)+' ')
    sys.stdout.flush()
    time.sleep(1)

-Larry

ajikoe at gmail.com wrote:
> Hello,
> 
> I tried this code in emacs.
> for i in range(3):
>   time.sleep(1)
>   print i
> 
> It shows the result but total result not second per second.
> 
> Any one experiance this problem
> 
> pujo
> 


From steve at holdenweb.com  Fri May 20 15:29:48 2005
From: steve at holdenweb.com (Steve Holden)
Date: Fri, 20 May 2005 15:29:48 -0400
Subject: Comparing 2 similar strings?
In-Reply-To: <238o815u215232b62m0nlvcaagu50sqngf@4ax.com>
References: <24a6d$428b9c10$d1b717f8$2300@PRIMUS.CA>	<428BA05D.1010600@lsupcaemnt.com>	<3d9n815cpmavos1fl6ts712h9qogdv3fur@4ax.com>	<tOydnZJPi5FmeBbfRVn-3A@comcast.com>
	<238o815u215232b62m0nlvcaagu50sqngf@4ax.com>
Message-ID: <d6ldp2$aud$1@sea.gmane.org>

Dennis Lee Bieber wrote:
> On Wed, 18 May 2005 20:03:53 -0500, Ed Morton <morton at lsupcaemnt.com>
> declaimed the following in comp.lang.python:
> 
> 
> 
>>Fantastic test data set. I know how to pronounce McPherson but I'd never 
>>have guessed that Mousaferiadis sounds like it. I suppose non-Celts 
>>probably wouldn't be able to guess how Dalziell, Drumnadrochit, Culzean, 
>>Ceilidh, or Concobarh are pronounced either.
>>
> 
> 	Since "soundex" is initial letter (consonant?) and a code for
> the next three syllables (or close to it), really long multi-syllabic
> names are effectively truncated...
> 
> 	Howe'er... When Maire Brennan releases an album as "Moya",
> following sister's "Enya" (Eithne, as I seem to recall reading)... I'd
> not attempt to pronounce most of the names you supply... "Dalziell"
> doesn't look Celtic... "Culzean" almost looks Aztec/Mayan... "Ceilidh"
> => kay-lee?
> 
> 	Okay, I think I can manage bain sidhe and uisge (after too much
> of the latter, I'll be seeing the former)
> 
Well, as an Englishman who has spent a good deal of time in Scotland I'd 
essay the following. If there are any Scots reading they can chastise me 
with glee for my presumption.

Dalziell:		"Da'y yell"
Drumnadrochit:		"Dru'mnadro'ckit"
			(but the Scots would insist you use
			a gutteral for the "ch", I'm not sure
			how to render that phonetically. It's
			a bit like the sound made before spitting,
			or the "G" in Guido in Dutch :-).
Culzean:		"Ka La'ne"
Ceilidh:		"Ca'yli" (once had a border collie called
			Ceilidh).
Concobarh:		(is this the same as 'Conchobar'?)
			Co'nnahwar

promoting-scottish-english-unity-ly y'rs  - steve
-- 
Steve Holden        +1 703 861 4237  +1 800 494 3119
Holden Web LLC             http://www.holdenweb.com/
Python Web Programming  http://pydish.holdenweb.com/



From finite.automaton at gmail.com  Thu May 12 19:21:54 2005
From: finite.automaton at gmail.com (Lonnie Princehouse)
Date: 12 May 2005 16:21:54 -0700
Subject: Python features
References: <1115536911.106882.166230@z14g2000cwz.googlegroups.com>
	<mailman.162.1115539371.29826.python-list@python.org>
Message-ID: <1115940114.883753.281050@f14g2000cwb.googlegroups.com>


> Quoting from that link:
> There are three main types of programming languages.
>
>      * Imperative
>      * Functional
>      * Declarative
>

Aren't functional languages a subset of declarative?

(c.f. http://en.wikipedia.org/wiki/Declarative_programming)



From philippe at philippecmartin.com  Tue May 24 13:14:28 2005
From: philippe at philippecmartin.com (Philippe C. Martin)
Date: Tue, 24 May 2005 17:14:28 GMT
Subject: Python 2.4.1 installation problem
Message-ID: <UhJke.2086$TJ2.1566@newssvr11.news.prodigy.com>

Hi,

I am trying to install 2.4.1 on a new machine and have the following
problems.

1) I'm on MDK 10.1
2) The system had 2.3.4 installed in /usr , I deleted the lib
3) I ran ./configure --prefix=/usr, then make, then make install, everything
went OK


If I run Python, I get

File "/etc/pythonrc.py", Line 2 in ?
ImportError: no module readline



I also tried to run one of my script and got an import error on bz2.


I have 2.4.1 running OK on another machine with the exact same distro.


Any clue ?

Thanks,

Philippe




From hello at spamm.er  Tue May 24 03:23:04 2005
From: hello at spamm.er (alex goldman)
Date: Tue, 24 May 2005 00:23:04 -0700
Subject: What are OOP's Jargons and Complexities?
References: <1116843761.619249.144790@g47g2000cwa.googlegroups.com>
	<bAske.14563$yx.14338@fe08.lga> <3584469.Aerji1NdQr@yahoo.com>
	<qEuke.24657$NZ1.533@fe09.lga>
	<slrnd95l5i.r5.tassilo.von.parseval@localhost.localdomain>
Message-ID: <2328173.kzWe5NVpXe@yahoo.com>

Tassilo v. Parseval wrote:

> Also sprach John W. Kennedy:
> 
>> alex goldman wrote:
>>> John W. Kennedy wrote:
>>> 
>>> 
>>>>Strong typing has been a feature of mainstream programming languages
>>>>since the late 1950's.
>>> 
>>> I'm just curious, what do you mean by /strong/ typing, and which
>>> strongly typed languages do you know?
>>
>> Unfortunately, I have seen the meaning shift with the context. In Ada
>> '83, it means it is not possible to have the equivalent of a C
>> unprototyped function, and that mixed-type expressions tend to need
>> explicit casting. In other contexts (as here), I've seen it used to mean
>> simply that variables have definite types, and it is not possible
>> (except by the use of polymorphic classes) for a variable to change from
>> an integer to a float to a character string in the course of execution.
>> In this sense, compile-to-machine-code languages (ee.g., Fortran, COBOL,
>> C, C++, or Pascal), are generally strongly typed
> 
> These are statically typed. The extent to which they are also strongly
> typed differs: C++ is probably a little more strongly typed than C, but
> by and large their typing is still fairly weak.
> 
> Most often, languages with strong typing can be found on the functional
> front (such as ML and Haskell). These languages have a dynamic typing
> system. 

No, ML & Haskell are strongly and statically typed. Read this paper if
interested:

http://research.microsoft.com/Users/luca/Papers/TypeSystems.pdf




From gtog at _no___spam_myrealbox.com  Thu May 12 10:46:20 2005
From: gtog at _no___spam_myrealbox.com (George)
Date: Thu, 12 May 2005 16:46:20 +0200
Subject: Launch file in Notepad
In-Reply-To: <mailman.465.1115907122.29826.python-list@python.org>
References: <42835db6$0$1334$5fc3050@dreader2.news.tiscali.nl>	<42836024.1040102@po-box.mcgill.ca>
	<mailman.465.1115907122.29826.python-list@python.org>
Message-ID: <42836cf8$0$1350$5fc3050@dreader2.news.tiscali.nl>

Richie Hindle wrote:
>>By the way, b1 comes from a command line parameter, so the user enters 
>>c:\test.txt as command line parameter.
> 
> 
> How are you prompting the user?  When I run this:
> 
> import os
> b1=raw_input("Enter a filename: ")
> os.system('notepad.exe ' + b1)
> 
> and enter c:\test.txt, it works as expected.

So it does with me, but the user does not enter the filename, he 
launches my Python script file from the DOS-prompt with a command line 
parameter, for example:

test.py c:\test.txt

In that case the \ escapes the t. (read on!)

That is, until now. For some very strange reason it suddenly works as 
expected. I don't understand it anymore, but never mind. Maybe I changed 
my little proggie somehow, causing it accidentally to work. Thanks anyway.

George


From brian at sweetapp.com  Tue May 10 08:39:08 2005
From: brian at sweetapp.com (Brian Quinlan)
Date: Tue, 10 May 2005 14:39:08 +0200
Subject: Advice needed on __del__
In-Reply-To: <42800ACD.5060802@anvilcom.com>
References: <d5o1s1$8h3$1@sea.gmane.org>	<d5obmp$cqh$1@sea.gmane.org>	<427FBAD4.3070004@anvilcom.com>	<d5ogv2$2k9$1@sea.gmane.org>
	<42800279.3B26FFF3@pauahtun.org> <42800ACD.5060802@anvilcom.com>
Message-ID: <4280AB6C.80200@sweetapp.com>

phil wrote:
> I'm probably dense and don't quite get the point, even though I
> have coded about 200,000 lines of Python and coded .5 million lines of
> C before there was a C++
> 
> A class instance based language doesn't have to BE C++ to have a
> destructor method.

Very true. But meaningful finalizers are a difficult problem in 
languages like Python. For example:

class A:
     def __del__(self): print self.b

class B:
     def __init__(self, a): self.a = a
     def __del__(self): print self.a

a = A()
a.b = B(a)
del a

What should happen? How would you implement that behavior? How would 
you implement that behavior on Java and .NET (neither of which 
gaurantee that finalizers/destructors will be called).

> All I wanted to know is: is the apparent treatment of __del__
> which SEEMS to work fine for me in 2.3.4 deprecated or mangled
> in some later release or future plans.

__del__ is not currently gauranteed to do anything. Currently it does 
something. Depending on that something is a bad idea. Could you explain 
your problem in more detail - maybe we'll have some suggestions.

Cheers,
Brian


From sjmachin at lexicon.net  Thu May 26 19:13:17 2005
From: sjmachin at lexicon.net (John Machin)
Date: Fri, 27 May 2005 09:13:17 +1000
Subject: overflowerror!!
In-Reply-To: <42964d7b$0$16470$db0fefd9@news.zen.co.uk>
References: <1117143082.825320.131260@g44g2000cwa.googlegroups.com>
	<4296411a$0$24052$db0fefd9@news.zen.co.uk>
	<1117143861.915551.316940@g49g2000cwa.googlegroups.com>
	<42964d7b$0$16470$db0fefd9@news.zen.co.uk>
Message-ID: <4296580d$1@news.eftel.com>

Will McGugan wrote:
> ashtonn at gmail.com wrote:
> 
>> I tried that. Still get an Overflowerror: unsigned long is less than
>> minimum.
>>
> 
> You'll also need to reserve enough space for the 256 ints. Try this..
> 
> data = array('L', '\0' * 256*4)
> 
> 

I don't understand. Why not just do the whole thing simply and cleanly, 
like this:

data = array('L', 256 * [0xffffffff])




From querypk at gmail.com  Thu May  5 15:40:25 2005
From: querypk at gmail.com (querypk at gmail.com)
Date: 5 May 2005 12:40:25 -0700
Subject: min max of a list
In-Reply-To: <temdnRBabsR2_effRVn-gg@comcast.com>
References: <1115245476.036508.273930@g14g2000cwa.googlegroups.com>
	<gaCdnf8Pf9xj7-TfRVn-tQ@comcast.com>
	<1115259992.558123.189580@g14g2000cwa.googlegroups.com>
	<temdnRBabsR2_effRVn-gg@comcast.com>
Message-ID: <1115322025.662608.231380@f14g2000cwb.googlegroups.com>

what if we do something like this. Assume the values list is the
content of a histogram. Then we see that
values = [  0,  72,   0,   4,   9,   2,   0,   0,  42,  26,   0, 282,
23,   0, 101, 0,   0,   0,   0,   0]
 1 is repeated 72 times, 3 -> 4 times and so on. That is the index
would be the value repeated as many times as in the list.
Now If we find the max and look for the adjcent index. FOr example

take 282 :

Index of 282 --> 11
now check for value of index 10 and 12 .If value(10) < value(9) then
there is a dip as value(9) and value(11) are greater than value(10).
that could be the lower bound of that range. then if
value(11) and value(13) for value(12). if value(11)< value(10) there is
a dip. SO the bounds of [10,12] -> [0,282,23]  rather than  [10, 13]
values:  [0, 282, 23, 0] ( in your case).
How would this work. Is there someway I could do this faster.



From steven.bethard at gmail.com  Thu May 19 01:06:24 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Wed, 18 May 2005 23:06:24 -0600
Subject: help with generators
In-Reply-To: <1116461870.130411.9280@g43g2000cwa.googlegroups.com>
References: <1116461870.130411.9280@g43g2000cwa.googlegroups.com>
Message-ID: <hd-dnbBAGZJPgxHfRVn-rA@comcast.com>

Mayer wrote:
> Hello:
> 
> I need some help in understanding generators. I get them to work in
> simple cases, but the following example puzzles me. Consider the
> non-generator, "ordinary" procedure:
> 
> def foo(n):
>     s = []
>     def foo(n):
>         if n == 0:
>             print s
>         else:
>             s.append(0)
>             foo(n - 1)
>             s.pop()
>             s.append(1)
>             foo(n - 1)
>             s.pop()
>     foo(n)
> 
> foo(n) prints all n-bit-wide binary numbers as a list. I would now like
> to create a generator for such numbers:
> 
> def bin(n):
>     s = []
>     def bin(n):
>         if n == 0:
>             yield s
>         else:
>             s.append(0)
>             bin(n - 1)
>             s.pop()
>             s.append(1)
>             bin(n - 1)
>             s.pop()
>     return bin(n)
> 
> yet this doesn't work as expected. Can someone please explain why?

It would help if you explained what you expected.  But here's code that 
prints about the same as your non-generator function.

py> def bin(n):
...     s = []
...     def bin(n):
...         if n == 0:
...             yield s
...         else:
...             s.append(0)
...             for s1 in bin(n - 1):
...                 yield s1
...             s.pop()
...             s.append(1)
...             for s1 in bin(n - 1):
...                 yield s1
...             s.pop()
...     return bin(n)
...
py> for s in bin(1):
...     print s
...
[0]
[1]
py> for s in bin(2):
...     print s
...
[0, 0]
[0, 1]
[1, 0]
[1, 1]

Note that to make the recursive calls work, you *must* iterate through 
them, thus what was in your code:

     bin(n - 1)

now looks like:

     for s1 in bin(n - 1):
         yield s1

This is crucial.  bin(n - 1) creates a generator object.  But unless you 
put it in a for-loop (or call it's .next()) method, the generator will 
never execute any code.

HTH,

STeVe


From flupke at nonexistingdomain.com  Thu May 12 03:06:23 2005
From: flupke at nonexistingdomain.com (flupke)
Date: Thu, 12 May 2005 07:06:23 GMT
Subject: Destructor Woes, was Advice needed on __del__
In-Reply-To: <mailman.304.1115745700.29826.python-list@python.org>
References: <d5o1s1$8h3$1@sea.gmane.org>	<d5obmp$cqh$1@sea.gmane.org>	<427FBAD4.3070004@anvilcom.com>	<d5ogv2$2k9$1@sea.gmane.org>	<42800279.3B26FFF3@pauahtun.org>	<mailman.244.1115687630.29826.python-list@python.org>	<DS1ge.87015$Tk7.5147767@phobos.telenet-ops.be>
	<mailman.304.1115745700.29826.python-list@python.org>
Message-ID: <PfDge.88591$rd1.5444651@phobos.telenet-ops.be>

phil wrote:
> 
>> Then i got a tip that you can register a function that needs to be 
>> called when the object is going to be deleted.
>> For instance to register a function __exit, you do this:
>>
> 
> 
> Here is the complete line class with your suggestion:
> 
> Below is the output.
> 
> Nice idea, maybe I did something wrong?
> 
> class line:
>     def __init__(s,glob,argl,color=''):
>         atexit.register(s.__exit)
>         s.glob = glob
>         s.type = 'line'
>         s.color = color
>         if not s.color: s.color = glob.color
>         if len(argl) == 2:
>             wobj = glob.objs[ argl[0] ][0]
>             s.x0 = a0 = wobj.x
>             s.y0 = b0 = wobj.y
>             wobj = glob.objs[ argl[1] ][0]
>             s.x1 = a1 = wobj.x
>             s.y1 = b1 = wobj.y
> 
>         elif len(argl) == 4:
>             s.x0 = a0 = float( argl[0] )
>             s.y0 = b0 = float( argl[1] )
>             s.x1 = a1 = float( argl[2] )
>             s.y1 = b1 = float( argl[3] )
>         else: return
>         s.midx = (s.x0 + s.x1) / 2
>         s.midy = (s.y0 + s.y1) / 2
>         s.len = sqrt( (s.x1 -s.x0)**2  + (s.y1 -s.y0)**2 )
>         if  (s.y1 -s.y0) == 0: s.slope = 0
>         elif  (s.x1 -s.x0) == 0: s.slope = 999999
>         else: s.slope = (  (s.y1 -s.y0) / (s.x1 -s.x0) )
> 
>         # center point of graph is 400,300
>         # scale is no of pixels per unit of measure
>             x0 = a0  * s.glob.scale + 400
>             y0 = 300 - b0  * s.glob.scale
>             x1 = a1  * s.glob.scale + 400
>             y1 = 300 - b1 * s.glob.scale
>         s.obj = glob.can.create_line(x0,y0,x1,y1,
>                     width=glob.width,fill=s.color)
>     def __exit(s):
>         print 'exit'
>         s.glob.can.delete(s.obj)
> 
>     # def __del__(s):
>     #     s.glob.can.delete(s.obj)
> 
> 
> exit
> 
> Error in sys.exitfunc:
> Traceback (most recent call last):
>   File "/usr/local/lib/python2.3/atexit.py", line 20, in _run_exitfuncs
>     func(*targs, **kargs)
>   File "./graph.py", line 972, in __exit
>     s.glob.can.delete(s.obj)
>   File "/usr/local/lib/python2.3/lib-tk/Tkinter.py", line 2085, in delete
>     self.tk.call((self._w, 'delete') + args)
> _tkinter.TclError: invalid command name ".1076354284"
> 

I don't know what's wrong in your example. Here it works (doesn't help 
you of course). I would first try with an easy example an try to test 
the atexit functionality like that. It seems that the problem you are 
having isn't related to the atexit part.
Sorry i couldn't be of more help

Benedict


From jasondrew72 at gmail.com  Thu May 19 16:58:30 2005
From: jasondrew72 at gmail.com (Jason Drew)
Date: 19 May 2005 13:58:30 -0700
Subject: Convert from numbers to letters
In-Reply-To: <fbudne5spe3oZxHfRVn-jg@comcast.com>
References: <1116511005.900715.107260@o13g2000cwo.googlegroups.com>
	<1116519193.037429.93560@o13g2000cwo.googlegroups.com>
	<1116529140.470352.129690@z14g2000cwz.googlegroups.com>
	<mailman.224.1116530388.8733.python-list@python.org>
	<1116535087.901874.167870@g43g2000cwa.googlegroups.com>
	<fbudne5spe3oZxHfRVn-jg@comcast.com>
Message-ID: <1116536310.867393.112290@o13g2000cwo.googlegroups.com>

Oh yeah, oops, thanks. (I mean the line continuations, not the alleged
sin against man and nature, an accusation which I can only assume is
motivated by jealousy :-) Or fear? They threw sticks at Frankenstein's
monster too. And he turned out alright.

My elegant "line" of code started out without the enclosing
parentheses; forgot I didn't need the \s when I embraced it.



From shrivastaw at gmail.com  Thu May  5 11:02:30 2005
From: shrivastaw at gmail.com (xeron)
Date: 5 May 2005 08:02:30 -0700
Subject: Newbie.......Python and Networking
In-Reply-To: <mailman.13.1115229251.29826.python-list@python.org>
References: <1115227469.785695.16360@f14g2000cwb.googlegroups.com>
	<mailman.13.1115229251.29826.python-list@python.org>
Message-ID: <1115305350.366482.190520@f14g2000cwb.googlegroups.com>

Thanks phil, I think I'll start off with your chat prog (UDP-- 50 lines
code ) and then try for routing and firewall scripts for linux, yepp
that would be really tough but why not give it a try, i am going to
have my vacations for like 13 days so will be preparing for my CCNA and
also learning python in that duration.

You have been most helpful through ur well thought and scaled reply

xeron



From fredrik at pythonware.com  Thu May  5 17:04:35 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 5 May 2005 23:04:35 +0200
Subject: Documenting Python code.
References: <1115128200.628997@hqnntp01.autodesk.com>
Message-ID: <d5e44u$jg6$1@sea.gmane.org>

Isaac Rodriguez wrote:

> Since Python is a very powerful language parsing strings, replacing
> expressions, and processing XML, I was wondering if people documents the
> code using constructs similar to JavaDoc

if you want something very similar to JavaDoc, you can use PythonDoc:

    http://effbot.org/zone/pythondoc.htm

</F>





From richardjones at optushome.com.au  Mon May 23 01:02:17 2005
From: richardjones at optushome.com.au (richard)
Date: Mon, 23 May 2005 15:02:17 +1000
Subject: problem uploading ZIP file tp PyPI
References: <spsb81hia4m5n136tp0sgpuldd0gon555m@4ax.com>
	<4287fd5e$0$4655$afc38c87@news.optusnet.com.au>
	<1116210182.148076.159110@g44g2000cwa.googlegroups.com>
	<42888e05$0$5180$afc38c87@news.optusnet.com.au>
	<c18h81pj5bsi149rknvjemq2v8vo8794ei@4ax.com>
	<428d12d0$0$8122$afc38c87@news.optusnet.com.au>
	<ic9q81pjunv49llnlnshi1po5cmhut5fdf@4ax.com>
Message-ID: <429163d8$0$5175$afc38c87@news.optusnet.com.au>

John Machin wrote:
> I presume you mean a bug report. Done.

Thankyou.


> I wrote:
>> He wrote:
>>> I wrote:
>>>> The code is being too paranoid
>>> 
>>> Which code (distutils or PyPI server) is being paranoid about what???
>>
>> The PyPI server code, which attempts to make sure people aren't uploading
>> pr0n.
> So zip implies pr0n but exe doesn't ???

Not sure what your point is here. Are you implying that PyPI is doing
something wrong W.R.T. exe files? If you are, what are you basing that
statement on? And what would you do differently?


    Richard



From mwm at mired.org  Wed May 11 23:46:37 2005
From: mwm at mired.org (Mike Meyer)
Date: Wed, 11 May 2005 22:46:37 -0500
Subject: pyvm -- faster python
References: <mailman.164.1115548611.29826.python-list@python.org>
	<1115561483.741761.212140@f14g2000cwb.googlegroups.com>
	<m102l2-9qr.ln1@home.rogerbinns.com>
	<mailman.264.1115716603.29826.python-list@python.org>
	<vu38l2-k5v.ln1@home.rogerbinns.com>
	<mailman.333.1115805199.29826.python-list@python.org>
Message-ID: <86y8alkswy.fsf@guru.mired.org>

Stelios Xanthakis <sxanth at ceid.upatras.gr> writes:
> 	- hacking SWIG.  Shouldn't be too hard and will instantly give
> 	us access to wx, qt, etc.

You can't assume that because some package is a C/C++ library wrapped
for Python that it uses SWIG. pyqt, for example, doesn't use SWIG at
all. It uses SIP, which is considerably more complicated than SWIG.

     <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From mal at lemburg.com  Sat May 14 23:30:54 2005
From: mal at lemburg.com (mal at lemburg.com)
Date: Sun, 15 May 2005 03:30:54 UTC
Subject: Massenhafter Steuerbetrug durch auslaendische Arbeitnehmer
Message-ID: <b5a8.f0cf26ea5bc36@lemburg.com>

Lese selbst:
http://www.rp-online.de/public/article/nachrichten/wirtschaft/finanzen/deutschland/85815


From rrr at ronadam.com  Thu May 12 20:59:29 2005
From: rrr at ronadam.com (Ron Adam)
Date: Thu, 12 May 2005 20:59:29 -0400
Subject: Python 2.4 & BLT ?
In-Reply-To: <4283be30$0$349$4d4efb8e@read.news.be.uu.net>
References: <4280f791$0$344$4d4efb8e@read.news.be.uu.net>	<mailman.317.1115769735.29826.python-list@python.org>	<42823F8D.6010705@teledisnet.be>	<mailman.408.1115850748.29826.python-list@python.org>
	<4283be30$0$349$4d4efb8e@read.news.be.uu.net>
Message-ID: <4283FBF1.80905@ronadam.com>

StepH wrote:
> Ron Adam a ?crit :
> 
>>StepH wrote:
>>
>>
>>>Ron Adam a ?crit :
>>>
>>>
>>>>StepH wrote:
>>>>
>>>>
>>>>
>>>>>Hi,
>>>>>
>>>>>I'm not able to install BLT on my Python 2.4 (upgraded to 2.4.1) 
>>>>>distibution...
>>>>>
>>>>>I'v try to download btlz-for-8.3.exe, but when i try to install it, 
>>>>>i've a msgbox saying to the file is corrupt...
>>>>>
>>>>>Any idea ?
>>>>>
>>>>>Thanks.
>>>>>
>>>>>StepH.
>>>>
>>>>
>>>>
>>>>Have you tried blt2.4z-for-8.4exe?
>>>>
>>>>http://blt.sourceforge.net
>>>
>>>
>>>
>>>yes.  When i try to execute it, a small msgbox apprea with the msg:
>>>Corrupt installation detected!
>>>
>>>Any idea ?
>>
>>
>>Sounds like it might not be a corrupted install exe file, but a 
>>previously installed version that is corrupted.
>>
> 
> 
> Hum, i've try to re-install all from scratch without success...
> 
> 
>>Does the message box say anything else?  With just "Corrupt installation 
>>detected!", it could also be a support file or missing dll that the 
>>installer needs.
> 
> 
> Yes.  It's the only message that is displayed.
> I've to go ahead...  so for now i'll use tk.Canvas for my display...
> 
> If you have idea ?

A little googling found the following which may give you a clue or ideas 
of further searches.  Also run a virus scanner on the file before hand.

http://www.noteworthysoftware.com/composer/faq/90.htm
http://www.transcender.com/faqs/detail.aspx?pn=tradwnldinstallarticle00900&full=True&tree=True
http://www.visagesoft.com/help/index.php?_a=knowledgebase&_j=questiondetails&_i=5
http://www.wise.com/KBArticle.aspx?articleno=1034

As a last resort, you may also be able to check the exe file by using a 
zip file reader such as winzip or powerarchiver.  You should be able to 
extract the individual files that way, but it may be a bit of a task to 
figure out where to put them.

Hope this helps,

_Ron


From aa-sender at listhub.w3.org  Tue May 17 19:28:30 2005
From: aa-sender at listhub.w3.org (W3C List Manager)
Date: Tue, 17 May 2005 23:28:30 +0000
Subject: IMPORTANT: your message to png-group
In-Reply-To: <a68e.f10bfac6b85bd@python.org>
Message-ID: <E1DYBUE-0002yk-Va@frink.w3.org>

This is a response to a message apparently sent from your address to
png-group at w3.org:

    Subject: Trotz Stellenabbau
    From:    python-list at python.org
    Date:    Tue, 17 May 2005 23:26:14 UTC

Your message has NOT been distributed to the list; before we distribute it,
we need your permission to include your message in our Web archive of all
messages distributed to this list.

Please visit:

    http://www.w3.org/Mail/review?id=bfd63bc5294611123c07

and follow the simple procedure listed to give us permission to include
your message in our Web archives. It should take less than one minute
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If you do not give us this permission by Tue May 24 23:28:30 UTC 2005,
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-- 
W3C Postmaster, http://www.w3.org/Mail/



From jabel at plus.net  Wed May 11 10:39:24 2005
From: jabel at plus.net (John Abel)
Date: Wed, 11 May 2005 15:39:24 +0100
Subject: reg mail sending without smtp module
In-Reply-To: <20050511140612.47363.qmail@web8406.mail.in.yahoo.com>
References: <20050511140612.47363.qmail@web8406.mail.in.yahoo.com>
Message-ID: <4282191C.90506@plus.net>

praba kar wrote:

>Dear All,
>
>         Is it possible to send a message as a mail
>with out smtplib module?  If you find out any module
>for mail sending(without smtplib) kindly mail me.
>
>regards
>Prabahar
> 
>
>________________________________________________________________________
>Yahoo! India Matrimony: Find your life partner online
>Go to: http://yahoo.shaadi.com/india-matrimony
>  
>
socket

J


From martin at v.loewis.de  Sun May  8 14:00:45 2005
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Sun, 08 May 2005 20:00:45 +0200
Subject: Calling a python function from C++
In-Reply-To: <1115573496.595824.47970@f14g2000cwb.googlegroups.com>
References: <1115573496.595824.47970@f14g2000cwb.googlegroups.com>
Message-ID: <427E53CD.6020908@v.loewis.de>

lamthierry at gmail.com wrote:
> Let's say I have a python function do some math like the following:
> 
> def doMath(self):
>    self.val = self.val + 1
> 
> 
> How can I call this python function from C++? Assuming I have some sort
> of Python wrapper around my C++ codes.

See the "Embedding and Extending" tutorial. In short, you write

 resultObj = PyObject_CallMethod(selfObj, "doMath", "");
 if (resultObj == NULL)
    return NULL;
 Py_DECREF(resultObj); // resultObj should be Py_None

How you get hold of self depends on your application.

Regards,
Martin


From elangovan at qmaxtech.com  Tue May  3 07:29:41 2005
From: elangovan at qmaxtech.com (Elangovan)
Date: Tue, 3 May 2005 16:59:41 +0530
Subject: Python Problem
Message-ID: <002501c54fd3$6637e4c0$5f00a8c0@softwarebuild>

 Hi,

            We are using Python 2.3 version for our applications, for the Past 1 month we were facing the below problem.

Problem summary

Systems with windows XP and Windows 2000 platforms, when we open pythonwin editor and some py files after that we unable to open any browser window on windows, we have tried frequently uninstaling and reinstalling Python 2.3 but the problem remains the same. Please help us to solve this issue.

Thanks in advance.

Regards

Elangovan.D
Qmax Test Equipments Pvt. Ltd.
IT Highway,Elcot Avenue, Sholinganallur,
Chennai 600119.
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From gregpinero at gmail.com  Sat May  7 13:33:57 2005
From: gregpinero at gmail.com (gregpinero at gmail.com)
Date: 7 May 2005 10:33:57 -0700
Subject: win32- system call - getting results back into python
Message-ID: <1115487237.888185.311230@o13g2000cwo.googlegroups.com>

Hey everyone,

I'm trying to call a system command "svnlook log \arms" from within
python and process the results.  However I'm having trouble getting the
results of the command back into python.  I'm using windows if that
matters.

Here's what I have so far:

os.system("svnlook") #works but doesn't give me the output from
svnlook, just the status

commands.gettegetstatusoutput("svnlook") only works in unix?

Here's my final code which really <should> work:

pipe=os.popen("svnlook log \arms")  #works from console
text=pipe.read()
print text

>> I get blank

However this works fine and gives me many lines of output:
pipe=os.popen("dir")
text=pipe.read()
print text

Any idea what I'm doing wrong?  When I call my command from the command
prompt in windows I get a line of text.  By the way, I tried posting
this on the subversion group but I'm thinking maybe it's a python
question, or both?

Thanks,

Greg



From grante at visi.com  Fri May 27 12:07:31 2005
From: grante at visi.com (Grant Edwards)
Date: Fri, 27 May 2005 16:07:31 -0000
Subject: cpu usage limit
References: <1117206216.695085.282510@g44g2000cwa.googlegroups.com>
	<d77d4c$21a$1@solaris.cc.vt.edu> <d77dt7$2lqn$1@ns.felk.cvut.cz>
Message-ID: <119ehe35hno2qae@corp.supernews.com>

On 2005-05-27, garabik-news-2005-05 at kassiopeia.juls.savba.sk <garabik-news-2005-05 at kassiopeia.juls.savba.sk> wrote:

>>> How can I make sure that a Python process does not use more that 30% of
>>> the CPU at any time. I only want that the process never uses more, but
>>> I don't want the process being killed when it reaches the limit (like
>>> it can be done with resource module).

>> Are you looping during a cpu intensive task? If so, make it sleep a bit 
>> like this:
>> 
>> for x in cpu_task:
>>     time.sleep(0.5)
>>     do(x)
>
> or like this (untested!)
>
> finished = False
> while not finished:
>   before = time.time()
>   do(x) # sets finished if all was computed
>   after = time.time()
>   delta = after-before
>   time.sleep(delta*10/3.)
>
> now the trick: do(x) can be a single piece of code, with
> strategically placed yield's all over....

Since you have no way of knowing that your process was the only
one running between the two calls to time.time(), you're
placing an upper bound on how much CPU time you're using, but
the actual usage is unknown and may be much lower on a heavily
loaded machine.

Running for 100ms and sleeping for 333ms results in an upper
limit of 25% rather than 30%.  Sleeping for (delta * 7.0/3.0)
gives a 30% upper bound.

All that aside, it seems to me that this situation is analogous
to when people waste all sorts of effort trying to write clever
applications that cache parts of files or other data structures
in main memory with backing store on disk. They end up with a
big, complicated, buggy app that's slower and requires more
resources than a far simpler app that lets the OS worry about
memory management.

IOW, you're probably better off not trying to write application
code that tries to out-think your OS.  Use whatever prioritizing
scheme your OS kernel provides for setting up a low priority
"background" task, and let _it_ worry about divvying up the CPU.
That's what it's there for, and it's got a far better picture
of resource availability and demand.

-- 
Grant Edwards                   grante             Yow!  Yow! It's a hole
                                  at               all the way to downtown
                               visi.com            Burbank!


From tjreedy at udel.edu  Tue May 10 02:31:19 2005
From: tjreedy at udel.edu (Terry Reedy)
Date: Tue, 10 May 2005 02:31:19 -0400
Subject: Exception in Python 2.3.3 Interpreter
References: <1115627455.511797.7590@o13g2000cwo.googlegroups.com><mailman.216.1115654664.29826.python-list@python.org>
	<d5phes$4b0$2@news.mch.sbs.de>
Message-ID: <d5pk1r$rel$1@sea.gmane.org>


"Saravanan D" <saravanan.d at siemens.com> wrote in message 
news:d5phes$4b0$2 at news.mch.sbs.de...
>> > The crash occured at the following line:
>> > c = strcmp(vname, wname) (object.c)
> The above one is C Code.   The same line is present in object.c file of
> Python Interpreter Source and the function name is 
> default_3way_compare().

Ok, much clearer, you actually meant:

c = strcmp(vname, wname) /* in file object.c */

TJR





From kay.schluehr at gmx.net  Fri May 20 18:50:07 2005
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: 20 May 2005 15:50:07 -0700
Subject: first release of PyPy
In-Reply-To: <mailman.264.1116625088.8733.python-list@python.org>
References: <mailman.264.1116625088.8733.python-list@python.org>
Message-ID: <1116629407.638782.145950@g47g2000cwa.googlegroups.com>


holger krekel wrote:
> Welcome to PyPy 0.6
> --------------------
>
> *The PyPy Development Team is happy to announce the first
> public release of PyPy after two years of spare-time and
> half a year of EU funded development.  The 0.6 release
> is eminently a preview release.*

Congratulation to You and Your team!

PyPy is really awesome and if it succeeds in speed demands after the
translation phase I believe that the project will shift the power
within the Python community on the long run. There are moments I'm
almost shocked about it and think about the fate of other programming
programming languages like LISP. PyPy can be resolved to "Python in
Python" but also "Python multiplied/powered by itself" which is much
more triumphant. A short review of the 'thunks' objspace example gives
me the impression that the language development process as we know it
comes to an end and makes a kind of transition. This is both very
exciting and dangerous, like every philosophical event. 

Regards,
Kay



From me at privacy.net  Thu May 19 10:24:27 2005
From: me at privacy.net (Dan Sommers)
Date: 19 May 2005 10:24:27 -0400
Subject: Convert from numbers to letters
References: <1116511005.900715.107260@o13g2000cwo.googlegroups.com>
Message-ID: <m264xf5m5g.fsf@unique.fully.qualified.domain.name.yeah.right>

On 19 May 2005 06:56:45 -0700,
"rh0dium" <sklass at pointcircle.com> wrote:

> Hi All,
> While I know there is a zillion ways to do this..  What is the most
> efficient ( in terms of lines of code ) do simply do this.

> a=1, b=2, c=3 ... z=26

    (a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z) = range( 1, 27 )

> Now if we really want some bonus points..

> a=1, b=2, c=3 ... z=26 aa=27 ab=28 etc..

It's still one line, following the pattern from above, just longer.

Now why do you want to do this?

Regards,
Dan

-- 
Dan Sommers
<http://www.tombstonezero.net/dan/>


From leszczynscyATnospam.yahoo.com.nospam  Sun May 29 10:29:06 2005
From: leszczynscyATnospam.yahoo.com.nospam (Andy Leszczynski)
Date: Sun, 29 May 2005 09:29:06 -0500
Subject: How do i read just the last line of a text file?
In-Reply-To: <998om2-5fl.ln1@rogers.com>
References: <1117341766.166081.132240@o13g2000cwo.googlegroups.com>
	<9v0om2-5fl.ln1@rogers.com> <429959E6.9040208@lexicon.net>
	<998om2-5fl.ln1@rogers.com>
Message-ID: <x8ydncqu_IQ-TQTfRVn-jg@comcast.com>

Chris F.A. Johnson wrote:
> On Sun, 29 May 2005 at 05:57 GMT, John Machin wrote:
> 
>>Chris F.A. Johnson wrote:
>>
>>
>>>file = open(argv[1])          ## Open the file given on the command line
>>>all_lines = file.readlines()  ## Read all the lines
>>
>>I see your shadowing and raise you one obfuscation:
> 
> 
>    ;)
> 
> 
>>open = file(argv[1])          ## File the open given on the command line
>>all_lines = open.readlines()  ## Read all the lines
> 
> 
>    Such verbosity! (I excuse mine on the grounds that it was my first
>    attempt at a Python program.)
> 
> all_lines = file(argv[1]).readlines()
> 
>    And to answer the question in the subject line:
> 
> last_line = file(argv[1]).readlines()[-1]
> 
>    Both of which assume "from sys import argv".
> 
> 
>    Now I have to get serious and forget those bad habits.
> 

What if a file is long enough?

A.


From peter at engcorp.com  Tue May 31 17:55:38 2005
From: peter at engcorp.com (Peter Hansen)
Date: Tue, 31 May 2005 17:55:38 -0400
Subject: convert a string to tuple
In-Reply-To: <VsWdnQNf4J_RUwHfRVn-2g@comcast.com>
References: <1117570449.887422.225670@g43g2000cwa.googlegroups.com>
	<1117572374.910751.5400@f14g2000cwb.googlegroups.com>
	<VsWdnQNf4J_RUwHfRVn-2g@comcast.com>
Message-ID: <09mdnZZHwb73QAHfRVn-sQ@powergate.ca>

Steven Bethard wrote:
> Just be sure you know where your strings come from.  You wouldn't want 
> someone to pass you
>     """__import__('os').system('rm -rf /')"""
> and then send that to eval. =)

Why not, Steven?  I just tried it and my compu


From rogerb at rogerbinns.com  Wed May 11 12:47:49 2005
From: rogerb at rogerbinns.com (Roger Binns)
Date: Wed, 11 May 2005 09:47:49 -0700
Subject: pyvm -- faster python
Message-ID: <9rp9l2-1o2.ln1@home.rogerbinns.com>

 "Stelios Xanthakis" <sxanth at ceid.upatras.gr> wrote in message news:mailman.333.1115805199.29826.python-list at python.org...
>> - hacking SWIG.  Shouldn't be too hard and will instantly give
>> us access to wx, qt, etc.

 Have you ever written a non-trivial extension using Swig?  It isn't
as simple as you would think.  There are a lot of little things to
deal with, usually because because of the mismatch between C/C++
semantics and convention and Python library expectations.  You have
to do a fair amount of work to fix all that using C code, Python
code and sometimes parts of the internals of Swig-Python. wxPython
has used a modified version of Swig for most of its lifetime.

Some people also have issues with Swig staying compatible with itself:

  http://bob.pythonmac.org/archives/2005/03/11/swig-hate/

PyQT uses another tool to do the wrapping - SIP.

Tools like Swig have been in the business of exposing C/C++ to Python
for years and are still suboptimal.  I believe you will find "hacking
SWIG" and actually porting an existing project that uses it to be
hard.

I would suggest looking in the lib/python directory of Swig to get an
idea of what you have to start with.  Note how there is minimal overlap
with the Java directory to pick one example.

>> The thing is that the C API of pyvm is IMHO superior and much more fun.

That is not under dispute.  The suggestion is that you *also* provide a
way of running existing extensions, even if it is slow and inferior,
ideally without even having to recompile them.  (If you do require a
recompile then you'll also have to port/invent an equivalent to distutils).

>> You can wrap the entire sockets module in a couple of hours and also
>> enjoy it.

sockets are easy.  There are no structures, plain integer handles, no pointers,
about 8 methods and a few constants.  About the only thing to remember is
to deal with threading correctly.

>> I wish I could clone myself to port the entire std library
>> to pyvm -- so much fun it is:)

Well, if you don't provide an easy way to move existing stuff across, you'll
end up doing just that yourself!

Roger 




From richardjones at optushome.com.au  Mon May 23 01:23:37 2005
From: richardjones at optushome.com.au (richard)
Date: Mon, 23 May 2005 15:23:37 +1000
Subject: problem uploading ZIP file tp PyPI
References: <mailman.232.1116542997.8733.python-list@python.org>
	<429163f7$0$5175$afc38c87@news.optusnet.com.au>
Message-ID: <429168d7$0$9263$afc38c87@news.optusnet.com.au>

richard wrote:
> "bug against PyPI". Where did I say bug against distutils?

Apologies for the dupe response.

The bug has now been fixed.


    Richard



From m at m.com  Wed May  4 03:41:14 2005
From: m at m.com (monkey)
Date: Wed, 4 May 2005 15:41:14 +0800
Subject: wxpython on cygwin for drPython - ImportError: No module named
	_core_
References: <d581p2$1ec$1@newshost.mot.com>
Message-ID: <42787c9a_3@rain.i-cable.com>

I install the original python(www.python.org), it works with wxpython and
DrPython very very well.
But your case seem to be due to DrPython is not programed for Cygwin. You
should read through the system requirement of DrPython. As remember, it
stated the www.python.org only ( ;

> Hi,
>
> Did someone installed and used successfully drPython on Cygwin? The
> installation requires
> wxpython. I tried many different alternatives (source, binary, etc) but so
> far the best I get is the following.
>




From fredrik at pythonware.com  Thu May 26 08:11:47 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 26 May 2005 14:11:47 +0200
Subject: how to convert string to list or tuple
References: <d74dbl$h91$1@news.yaako.com>
Message-ID: <d74eac$noo$1@sea.gmane.org>

"flyaflya" <flyaflya at gmail.com> wrote:
>a = "(1,2,3)"
> I want convert a to tuple:(1,2,3),but tuple(a) return ('(', '1', ',',
> '2', ',', '3', ')') not (1,2,3)

if you trust the source, use

    eval(a)

if you don't trust it, you can use, say

    tuple(int(x) for x in re.findall("\d+", a))

or, perhaps

    tuple(int(x) for x in a[1:-1].split(","))

or some variation thereof.

(if you're using a version older than 2.4, add brackets inside
the tuple() call:

    tuple([int(x) for x in a[1:-1].split(",")])

etc.

</F> 





From ivanlan at pauahtun.org  Wed May 11 23:54:09 2005
From: ivanlan at pauahtun.org (Ivan Van Laningham)
Date: Wed, 11 May 2005 21:54:09 -0600
Subject: Python Documentation (vs PHP stuff)
References: <d5tjng$kae$1@sea.gmane.org><mailman.390.1115838298.29826.python-list@python.org><d5to4d$895$1@solaris.cc.vt.edu>
	<d5tqi2$d8l$2@sea.gmane.org> <d5udc6$uk7$1@sea.gmane.org>
Message-ID: <4282D361.C53D3F0D@pauahtun.org>

Hi All--

Terry Reedy wrote:
> 
> Conclusion 3: some people would apparently be happier with the Python docs
> if they were combined into one Python Manual.  This could be done as a
> virtual anthology by writing a combined Table of Contents (with links) and
> an Introduction discussing the various 'Parts' and their
> interrelationships.  It would not have to be limited to PSF material
> either.  I might even take a stab at it if I ever feel sufficiently
> ambitious and energetic.
> 

There are a GREAT many brilliant minds on this list, many of them
excellent writers (certain noisy parties excepted).  I write, and I am
certainly offering to help, but I think what's needed here is someone
who can organize better than the average person.  Terry might have the
right idea; maybe all that is needed is a hot table of contents,
although a few other repairs are in order, such as making the
Documentation link on the python.org front page point to the right
place.

A documentation Tips page wouldn't hurt, either; all these handy little
tricks people have been offering for my string methods problem ought to
be on a highly visible page.  No, not a 'How to find "string methods"'
page, but "Tips & Tricks for Interrogating the Python Docs" page.

Metta,
Ivan
----------------------------------------------
Ivan Van Laningham
God N Locomotive Works
http://www.andi-holmes.com/
http://www.foretec.com/python/workshops/1998-11/proceedings.html
Army Signal Corps:  Cu Chi, Class of '70
Author:  Teach Yourself Python in 24 Hours


From kay.schluehr at gmx.net  Thu May 12 01:40:10 2005
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: 11 May 2005 22:40:10 -0700
Subject: pyvm -- faster python
In-Reply-To: <7x1x8el18e.fsf@ruckus.brouhaha.com>
References: <mailman.164.1115548611.29826.python-list@python.org>
	<1115561483.741761.212140@f14g2000cwb.googlegroups.com>
	<m102l2-9qr.ln1@home.rogerbinns.com>
	<mailman.264.1115716603.29826.python-list@python.org>
	<vu38l2-k5v.ln1@home.rogerbinns.com>
	<7xvf5qbir1.fsf@ruckus.brouhaha.com>
	<nt98l2-1e.ln1@home.rogerbinns.com>
	<7xpsvymlse.fsf@ruckus.brouhaha.com>
	<1115791624.856252.247890@z14g2000cwz.googlegroups.com>
	<7x1x8el18e.fsf@ruckus.brouhaha.com>
Message-ID: <1115876410.813839.222080@g43g2000cwa.googlegroups.com>


Paul Rubin wrote:
> "Kay Schluehr" <kay.schluehr at gmx.net> writes:
> > Delete the "standard" and You still obtain huge librarys for .Net,
Java
> > and Python. I also regret that Prothon starved in infancy but it
might
> > be exeggerated to demand that each language designer or one of his
> > apostels should manage a huge community that enjoys doing redundant
> > stuff like writing Tk-bindings, regexp-engines and all that.
>
> Maybe there needs to be some kind of standard FFI (foreign function
> interface) like Lisp implementations have.
>
> > Sooner or later Python will go the LISP way of having a
standardized
> > "Common-Python" ( std_objectspace) and a number of dialects and
DSLs
> > running in their own derived object spaces. Maybe Python 3000 is an
> > illusion and will fade away like a Fata Morgana the closer we seem
come.
>
> Right now Python feels about like Maclisp in the 1970's must have
felt
> (that was before my time so I can't know for certain).  Lots of
> hackerly excitement, lots of cruft.  It needs to ascend to the next
> level.  PyPy looks like the best vehicle for that so far.  See
>
>    http://catb.org/~esr/jargon/html/M/MFTL.html
>
> for the canonical remark about languages that can't be used to
> implement their own compilers.  Python is fun and useful, but it
> really isn't mature until PyPy is released for production use.

Yes. What we are seeking for and this may be the meaning of Armins
intentiously provocative statement about the speed of running HLLs is a
successor of the C-language and not just another VM interpreter that is
written in C and limits all efforts to extend it in a flexible and
OO-manner. Python is just the most promising dynamic OO-language to
follow this target. 

Ciao,
Kay



From deets at web.de  Tue May 24 17:11:30 2005
From: deets at web.de (Diez Roggisch)
Date: Tue, 24 May 2005 23:11:30 +0200
Subject: PAM authentication?
In-Reply-To: <mailman.72.1116968691.18027.python-list@python.org>
References: <mailman.72.1116968691.18027.python-list@python.org>
Message-ID: <d705a2$et0$05$1@news.t-online.com>

Gary Wilson Jr wrote:
> I would like my application to be able to authenticate through PAM. Is
> there any code out there that implements this? All I could find was PyPAM
> (http://www.pangalactic.org/PyPAM/), which doesn't look like it has been
> touched in almost 6 years and requires python1.5.
> 

You can still use it. However what I don't like about it is that you 
need to run  as root to actually use PAM. Otherwise the process can only 
authenticate its (effective?) user.

So I switched to LDAP - and would like to see sasld being supported, but 
so far it's not wrapped I haven't found the time to do it myself.


Diez


From querypk at gmail.com  Fri May 20 18:35:10 2005
From: querypk at gmail.com (querypk at gmail.com)
Date: 20 May 2005 15:35:10 -0700
Subject: performance of Nested for loops
Message-ID: <1116628510.816306.31390@g43g2000cwa.googlegroups.com>

Is there a better way to code nested for loops as far as performance is
concerned.

what better way can we write to improve the speed.
for example:
N=10000
for i in range(N):
   for j in range(N):
       do_job1
   for j in range(N):
       do_job2



From steven.bethard at gmail.com  Wed May 11 16:18:36 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Wed, 11 May 2005 14:18:36 -0600
Subject: Python Documentation (should be better?)
In-Reply-To: <mailman.395.1115841498.29826.python-list@python.org>
References: <mailman.389.1115837608.29826.python-list@python.org>	<rs2dnWXMCe-Rwx_fRVn-qw@comcast.com>
	<mailman.395.1115841498.29826.python-list@python.org>
Message-ID: <sPKdnSJ3ANwG9R_fRVn-iQ@comcast.com>

Christopher J. Bottaro wrote:
> I think it should evolve into a manual that is more comprehensive
> and organized more like other programming manuals (chapter on control
> structures,

http://docs.python.org/tut/node6.html
  or
http://docs.python.org/ref/compound.html

> functions,

http://docs.python.org/tut/node6.html#SECTION006600000000000000000
http://docs.python.org/tut/node6.html#SECTION006700000000000000000
  or
http://docs.python.org/ref/function.html

> classes, inheritance, etc

http://docs.python.org/tut/node11.html
  or
http://docs.python.org/ref/class.html


Note that the first examples above are from the tutorial, the second 
form the language reference.

Personally, I would think that for 99% of users, going through the 
tutorial should be sufficient (it was for me).  I only use the language 
reference when I need to explain a particular detail of why Python does 
something.

Was there something that wasn't in the tutorial that you would have 
liked to be?  The more specific you can get, the more easily we can 
improve the documentation.

>>That said, if you see spots where the documentation needs help, the
>>right answer is to file a feature request[3] to add documentation.  If
>>you're feeling especially helpful, providing the documentation you'd
>>like to be added would be greatly appreciated.  Python's a community
>>effort -- if you see weak points, you can help the community build a
>>better Python by taking the time to address them yourself.
> 
> That true, but to be perfectly honest...I don't feel qualified.  I'm still a
> young'un in this programming game.  I'm sure a lot of seasoned devs would
> scoff at the documentation I write.

Well then at least file a feature request and indicate what was missing 
from the documentation, or what part of it confused you.  Even if you 
throw in a few phrases of documentation that never get used, at least 
they might give the dev who updates the documentation a better idea of 
the problem you encountered.

STeVe


From mwm at mired.org  Thu May 12 12:03:59 2005
From: mwm at mired.org (Mike Meyer)
Date: Thu, 12 May 2005 11:03:59 -0500
Subject: Python Documentation (should be better?)
References: <5C99C308457E6D4EA5448EA52A66004A675A6E@or.mxim.com>
	<17026.26789.592527.975821@montanaro.dyndns.org>
	<mailman.398.1115843305.29826.python-list@python.org>
	<eL2dnQqPycfr7R_fRVn-1w@comcast.com>
	<mailman.470.1115911344.29826.python-list@python.org>
Message-ID: <86sm0sig7k.fsf@guru.mired.org>

"Christopher J. Bottaro" <cjbottaro at alumni.cs.utexas.edu> writes:

> because there are no namespaces or classes, but still I think Python could
> do something similar.  Say for instance search for "append" and it will
> come back with a page for list's append, a page for array's append, etc.

A seperate page for each method of every class? Ouch. I think that's
serious overkill. Having the entries for the methods in the pages be
labelled, so that a search could return a direct link to the
appropriate paragraph, that would be a major improvement.

> If I wanted to learn about "types" in Python, where do I look?  The PHP
> manual has a whole section on the built-in types, how to get the type of a
> var, how to change cast the type of a var, etc.  I think that is such an
> important and basic part of any language, yet its scattered all over Python
> documention, difficult to find (i.e. not in a manual, but the library
> reference).

Python variables don't have types. Python objects have types. Python
further confuses the issue by overloading "types" to mean builtin
types, which are different classes, which can both instantiate as a
variable. If you're doing things Pythonically, you generally don't
care what type a variable has - you care that it supports the
operations you want. Changing the type of an object is either
impossible or dificult, depending on the object - and not to be
undertaken lightly.

What I'm trying to say is that "type" just isn't as important a
concept in Python as it is in other languages. PHP, for instance,
apparently has a number of automatic conversions between types if
various operations are applied, so you have to care what type an
object is or risk getting it converted accidently. Python doesn't do
that. Many languages have typed variables, so everything you do will
depend on the type of the variable. Python doesn't do that. Some OO
languages conflate types and classes, and use isinstane for type
checking. Python doesn't do that.  All that python cares about - and
all that you really need to care about - is that the object referenced
by the variable support the features you want to use.

> I guess what I'm trying to say is that there should be a "manual" which is
> half way between the tutorial and the library reference, that is organized
> more like a traditional manual (whatever that means, right?) and is more
> easily searchable.

Given that Python hides the difference between user-defined objects
and built-in objects, it's not clear to me that anything other than
the current system, with all the classes/types in one place, makes
sense.

That's not to say the documentation can't be improved. I'm just not
convinced that a "manual" pulling in parts from multiple different
places is an improvement.

That said, I'd like to ask what's wrong with the language reference?
It provides a nice reference on the syntax and semantics of the
language. What does the tutorial provide that you can't get from the
Language Reference?

         <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From lbates at syscononline.com  Wed May 18 11:29:15 2005
From: lbates at syscononline.com (Larry Bates)
Date: Wed, 18 May 2005 10:29:15 -0500
Subject: What are com_record objects
In-Reply-To: <mailman.152.1116428260.8733.python-list@python.org>
References: <mailman.152.1116428260.8733.python-list@python.org>
Message-ID: <428B5F4B.6080204@syscononline.com>

Python does have struct module that allows you to create
C-style structures.

Googling for "python struct" give us:

http://docs.python.org/lib/module-struct.html

I use it a lot to interface to COM object and to call
methods in .DLLs.

Larry Bates


Gijs Korremans wrote:
> Hi,
> 
> I want to connect to a com object with win32.client.
> Through this com object a have to connect to an other device with object.Connect(struct IPADDRESS_STRUCT * ip)
> 
> the struct IPADDRESS_STRUCT looks like this:
> 
> Byte Offset	Name	Type	Length (Bytes) 	Description
> 0	b1	BYTE	1		Byte 1 of an internet address
> 1	b2	BYTE	1		Byte 2 of an internet address
> 2	b3	BYTE	1		Byte 3 of an internet address
> 3	b4	BYTE	1		Byte 4 of an internet address
> 
> Because Python doesn't have structs like C, I tried to do it with a class (C structs are classes with no private) and with pack but I always get the error message "Only com_record objects can be used as records"
> 
> I'm new in the python language but I couldn't find anything about structs or com_records in python on the internet.
> 
> Does anyone know how to do this? 
> 
> Kind regards, 
> 
> 
> Gijs
> 
> --
> This message has been scanned for viruses and
> dangerous content by Network Sentry, and is
> believed to be clean.
> http://www.networksentry.co.za
> 


From nemesis at nowhere.invalid  Fri May 27 17:10:00 2005
From: nemesis at nowhere.invalid (Nemesis)
Date: Fri, 27 May 2005 21:10:00 GMT
Subject: [ANN] XPN 0.4.6
Message-ID: <20050527210213.3341.45078.XPN@orion.homeinvalid>

XPN (X Python Newsreader XPN) is a multi-platform newsreader with
Unicode support. It has features like scoring/actions, X-Face and Face
decoding, muting of quoted text, newsrc import/export, find article and
search in the body, spoiler char/rot13, random taglines, and
configurable attribution lines.

You can find it here:

http://xpn.altervista.org/index-en.html
http://sf.net/projects/xpn

This is mainly a bug-fix release.
Any feedback or help is really appreciated. 
If you want to translate XPN in your language you'll find the XPN.pot
file inside the "lang" directory.

New in the release:
    * v0.4.6: improved speed in article retrieving.
    * v0.4.6: added an indicator of unread articles in thread, now you don't have to open
              the thread in order to know if it contains unread articles.
    * v0.4.6: now the "CANCEL" works again, and "SUPERSEDE" lets you re-edit the original
              article text.
    * v0.4.6: fixed some pygtk issues, now XPN works correctly also with pygtk2.6 (and GTK2.6)
    * v0.4.6: fixed a bug in the "Edit Mail" window that caused some errors when closing
              the window.
    * v0.4.6: now the Error Dialog is shown also when XPN isn't able to start (thanks
              to Antonio Valentino).
    * v0.4.6: fixed some issues with shelve module that caused problems on some FreeBSD systems.
    * v0.4.6: some improvements in the french translation (thanks to Patrick Lamaiziere)
    * v0.4.6: some changes in the "raw view" management.
    * v0.4.6: changed subversion

-- 
I Used To Be Schizophrenic, But We're OK Now.
 
 |\ |       |HomePage   : http://nem01.altervista.org
 | \|emesis |XPN (my nr): http://xpn.altervista.org



From scmarsh at hotmail.com  Wed May 11 12:00:58 2005
From: scmarsh at hotmail.com (scott)
Date: Wed, 11 May 2005 16:00:58 GMT
Subject: ezPyCrypto confusion
Message-ID: <__pge.1317059$8l.285736@pd7tw1no>

I am experimenting with ezPyCrypto
( http://www.freenet.org.nz/ezPyCrypto/ ).
Having difficulty making the key portable (ie put in a file). I don't 
get an error message, I just recover a message string that is empty 
instead of one that contains my message.

The code is below with a few extra print statements and comments that 
hopefully make my problem clearer. Any help in getting it to work as 
expected is appreciated. System is Mac OS 10.3 / Python 2.4.1 framework.

START PROGRAM--------------------------------------------

import ezPyCrypto

msg = 'Meeting delayed 30 hours'
print msg
print '--------------------'
k = ezPyCrypto.key(512)
cipher = k.encStringToAscii(msg)
print cipher
msg_back = k.decStringFromAscii(cipher)
print msg_back
print '--------------------'

# So far so good. encrypted and decrypted as expected.
# Now try to put the key in a file for transport on eg a USB drive.

key_as_string = k.exportKey()
print key_as_string
f = open('/Users/scott/pyprogs/the_key.txt', 'w')
f.write(key_as_string)
f.close()

# Now get string representation of k (the key object above) and use it
# to create a key object (ke) that should decode the original cipher

f=open('/Users/scott/pyprogs/the_key.txt', 'r')
x = f.read()
ke = ezPyCrypto.key(x)
print ke        # Key object exists (good)
recovered_msg = ke.decString(cipher)
print type(recovered_msg)  # A message string is returned  (good)
print len(recovered_msg)   # The string is EMPTY! (not good)
print recovered_msg        # No message returned (not good)
f.close()

END PROGRAM-----------------------------------------------

RUN PROGRAM----------------------------------------------

scott$ python testezPyCrypto10.py
Meeting delayed 30 hours
--------------------
<StartPycryptoMessage>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<EndPycryptoMessage>

Meeting delayed 30 hours
--------------------
<StartPycryptoKey>
KEkwMApOVeQoVQNSU0FxAChjQ3J5cHRvLlB1YmxpY0tleS5SU0EKUlNBb2JqCnEBb3ECfXEEKFUB
ZXEFTDY1NTM3TApVAW5xBkw3MDg1MTU0ODQ3Nzg2Mzg1NzA3ODYxMzQ0NDcwNDQ3MDkzMTQ0Nzkx
NDIyMzAyMDMwMjQxMTcxNjY2NzQ3MjQ3Njc0MTAxMTYwNjA4OTA0ODUxMzgxMDkyMjkwNjk5OTM3
MTUwMTc0Njc3MzI5NjY3NjQzOTUzNjQzMDQ4MTEwMTYwMTMyMDE3Nzk4MTcxOTYzOTkwMTY0MzIx
TAp1YnRxBy5xAHRxAS4=
<EndPycryptoKey>

<ezPyCrypto.key instance at 0xc00f8>
<type 'str'>
0


From andre.roberge at gmail.com  Mon May  9 23:49:40 2005
From: andre.roberge at gmail.com (=?ISO-8859-1?Q?Andr=E9_Roberge?=)
Date: Tue, 10 May 2005 00:49:40 -0300
Subject: [ANN] new version of rur-ple (0.8.5)
Message-ID: <d5pahi$6pv$4@sea.gmane.org>

Version 0.8.5 of rur-ple has been released.
The web site has completely changed; it includes over 35 pages.
http://rur-ple.sourceforge.net/

--------------------------------------
Learning to program computer should be fun, for adults and children 
alike. RUR-PLE is an environment designed to help you learn computer 
programming using the language Python. To use RUR-PLE, you need 
wxPython. You can learn more about RUR-PLE or you can go to the download 
page.

=======
Apprendre ? programmer devrait ?tre amusant,
que l'on soit un adulte ou un enfant.

RUR-PLE est un environnement con?u pour vous aider ? apprendre la 
programmation informatique avec le langage Python. Pour utiliser 
RUR-PLE, vous aurez besoin de wxPython. Vous pouvez en apprendre 
davantage au sujet de RUR-PLE ou vous pouvez aller ? la page de 
t?l?chargement.



From http  Sat May 14 16:36:12 2005
From: http (Paul Rubin)
Date: 14 May 2005 13:36:12 -0700
Subject: tkinter puzzler
References: <7xzmv0hq2h.fsf_-_@ruckus.brouhaha.com>
	<mailman.438.1115883752.29826.python-list@python.org>
Message-ID: <7xhdh5ilz7.fsf@ruckus.brouhaha.com>

Martin Franklin <mfranklin1 at gatwick.westerngeco.slb.com> writes:
> I suspect you need to look at the columnconfigure / rowconfigure methods
> of the container (toplevel or frame)

Thanks, columnconfigure turned out to be the answer and Peter Otten's
post showing how to use it was very informative.  For some reason
columnconfigure is not documented in the otherwise excellent tkinter
reference manual from New Mexico Tech.

I'm having sort of a different prob now, which is I want to make a
pulldown menu as commonly seen on web pages.  The NMT reference
suggests using the MenuButton widget, which sort of works, though the
entrycget and entryconfigure methods that are supposedly on the menu
items aren't really there.  The toolkit itself says that MenuButton is
now considered obsolete and Frederik Lundh's manual seems to say
to use Menu somehow instead, but I haven't quite figured out how.

Is there a preferred and normal way to do this?  One thing I need is
to be able to disable individual menu choices based on stuff happening
in the application, which is why I wanted to use entryconfigure.

Also, I don't see how to get the little horizontal bar marker on the
button (as seen in IDLE) indicating that the button is a pulldown.  A
minute examining the IDLE source code didn't show it either, though I
can probably find it there with more effort.

Thanks as usual.


From markmcintyre at spamcop.net  Sun May 22 14:36:03 2005
From: markmcintyre at spamcop.net (Mark McIntyre)
Date: Sun, 22 May 2005 19:36:03 +0100
Subject: I want to ask you the most important question of your life. The
	question is: Are you saved? It is not a question of how good
	you are, nor if you are a church member,
	but are you saved? Are you sure you will go to Heaven when you die? The
	reason some people don't know for sure if they are going to
	Heaven when they die is because they just don't know. The good
	news is that you can know for sure you are going to Heaven. May
	22, 2005 12:10:55 pm
References: <1116778225.166227.128130@z14g2000cwz.googlegroups.com>
Message-ID: <n3k191lp37edl8guehn3seke78ctukidjq@4ax.com>

On 22 May 2005 09:10:25 -0700, in comp.lang.c , RLG101144 at yahoo.com
wrote:
>
>This is the most important question of your life.
>
>The question is:  Are you saved?

Actually the question is: why are you spamming? Its the work of Satan,
surely you know that, being as how you seem to be somewhat religiously
inclined. 

BTW, abuse reports filed with groups-abuse at google.com amongst other
places.

-- 
Mark McIntyre
CLC FAQ <http://www.eskimo.com/~scs/C-faq/top.html>
CLC readme: <http://www.ungerhu.com/jxh/clc.welcome.txt>

----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups
----= East and West-Coast Server Farms - Total Privacy via Encryption =----


From phillip.watts at anvilcom.com  Thu May 19 13:17:18 2005
From: phillip.watts at anvilcom.com (phil)
Date: Thu, 19 May 2005 12:17:18 -0500
Subject: Tkinter special math chars
References: <428CAB39.1070109@anvilcom.com>
	<20050519164442.GB18155@unpythonic.net>
Message-ID: <428CCA1E.4000500@anvilcom.com>

So far, on RedHat Linux:
I have used your method successfully in a Label
and in Canvas Text.  very slow.??
In A Text box I just get \N{INFINITY}.

But thanks, I will investigate Text Box more.

Jeff Epler wrote:

> I wrote the following code:
>     import Tkinter
>     t = Tkinter.Label()
>     t.configure(
>         text=u"As the function approaches \N{INFINITY}, \N{HORIZONTAL ELLIPSIS}")
>     t.pack()
>     t.mainloop()
> It worked for me on Windows NT 4.0 with Python 2.4, and on RedHat 9 with
> a self-compiled Python 2.3, showing an infinity symbol and an ellipsis.
> 
> u'\N{...}' stands for the Unicode character named '...'.  Unicode.org
> (and other sites) have lists of Unicode character names. 
> 
> Tk tries very hard to find the requested character in some font
> available on the system, but when it fails it just displays a unicode
> escape sequence like "\u220e" (instead of the END OF PROOF symbol, in
> this case), and there's really no way for Python to find out and fall
> back in some graceful way.
> 
> Relying on this behavior, here's a somewhat-falliable way to detect the
> presence of a symbol in the font used in a given widget:
>     def symbol_exists(s, w, f = None):
>         if f is None:
>             f = w.cget("font")
>         width_symbol = w.tk.call("font", "measure", f, s)
>         width_bench = w.tk.call("font", "measure", f, "000")
>         return width_symbol < width_bench
> This finds the width in pixels of the given symbol (s) and the string "000", in
> the font f.  If the width of the symbol is smaller, then it's probably available.
> If it's wider, then it's probably rendered as an escape sequence like "\u220e".
> This is falliable because there's no guarantee that the symbol would not be as
> wide as 000, but also it's possible for some escape code (say \u1111) to be
> narrower than 000.  Neither of these seem very likely in practice.
> 
> Jeff
> 





From steven.bethard at gmail.com  Fri May 20 11:34:17 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Fri, 20 May 2005 09:34:17 -0600
Subject: Convert from numbers to letters
In-Reply-To: <1116596845.792019.40340@g14g2000cwa.googlegroups.com>
References: <1116511005.900715.107260@o13g2000cwo.googlegroups.com>
	<1116519193.037429.93560@o13g2000cwo.googlegroups.com>
	<1116529140.470352.129690@z14g2000cwz.googlegroups.com>
	<mailman.224.1116530388.8733.python-list@python.org>
	<1116535087.901874.167870@g43g2000cwa.googlegroups.com>
	<1116541217.303770.314860@f14g2000cwb.googlegroups.com>
	<1116596845.792019.40340@g14g2000cwa.googlegroups.com>
Message-ID: <6_udnUizapsdnhPfRVn-vw@comcast.com>

Jason Drew wrote:
> ##def tuple2coord(tupl):
[snip]
> ##    rowfromzero, colfromzero = tupl

Just a side note here that if you want a better function signature, you 
might consider writing this as:

tuple2coord((rowfromzero, colfromzero)):
     ...

Note that the docstrings are nicer this way:

py> def tuple2coord(tupl):
...     x, y = tupl
...
py> help(tuple2coord)
Help on function tuple2coord in module __main__:

tuple2coord(tupl)

py> def tuple2coord((x, y)):
...     pass
...
py> help(tuple2coord)
Help on function tuple2coord in module __main__:

tuple2coord((x, y))

STeVe


From deetsNOSPAM at web.de  Fri May 27 08:49:00 2005
From: deetsNOSPAM at web.de (Diez B. Roggisch)
Date: Fri, 27 May 2005 14:49:00 +0200
Subject: Xml writing in Python and verifying using XSD
References: <1117188065.742367.219360@o13g2000cwo.googlegroups.com>
Message-ID: <d774vq$oma$01$1@news.t-online.com>

Prashanth  Ellina wrote:

> Hi,
> 
> I need to write some data to an xml file. I have an XML Schema defined.
> I would like to use some mechanism of writing the data to the xml file
> and having exceptions thrown back to me when the data is invalid.
> 
> I have looked at xml.dom and xml.dom.minidom but could not figure out
> what to do to include xml validation using the xsd while writing.
> 
> Any ideas?

Use StringIO to capture the output of your writings, and use a
xsd-validating parser (not sure which one, but google should help) to
reread that. Or a temporary file.

Apart from that I don't see much chances - which has nothing to do with
python but with xml itself: xml isn't suited for streams, because of the
opening/closing tags  - and noone can forsee if an opened tag in the stream
is closed in the future. Only after you finished the writing of that
document itself you can do that.

Similar arguments apply to DOMs. A DTD/XSD might require a certain element
to have a childelement. But when creating the element it has no childs - so
the document would be invalid. In the end you can only validate a finished
dom tree. So the only thing that could be tried is to feed that dom tree
instead of a xml string to a validation process - but if that's doable I'm
not  sure, and it doesn't buy you too much performance gain. So stick with
the write/validate process described above.

-- 
Regards,

Diez B. Roggisch


From anton.vredegoor at gmail.com  Fri May 20 08:28:50 2005
From: anton.vredegoor at gmail.com (Anton Vredegoor)
Date: 20 May 2005 05:28:50 -0700
Subject: Python on a public library computer
In-Reply-To: <1116464373.016279.13030@f14g2000cwb.googlegroups.com>
References: <1116069664.779281.320540@g47g2000cwa.googlegroups.com>
	<87r7g6rbz0.fsf@pobox.com>
	<mailman.67.1116286093.8733.python-list@python.org>
	<1116330665.197293.198950@o13g2000cwo.googlegroups.com>
	<861x858qav.fsf@guru.mired.org>
	<1116417677.506240.261730@g47g2000cwa.googlegroups.com>
	<1116464373.016279.13030@f14g2000cwb.googlegroups.com>
Message-ID: <1116592130.314355.202930@g44g2000cwa.googlegroups.com>

alex23 wrote:

> You know, there _are_ valid reasons for libraries et.al. 'locking
down'
> public terminals other than fascism...

Maybe, but in this case I can run only IE, word, excel and powerpoint.

Do you think there is a rational reason for that? Like Tim Peters
showing up, explaining that it's just a natural side effect of binary
floating point implementations?

On the other hand one might look at public libraries as places suited
to inspire people and showing them how one is to treat the users of a
public service.

Since Dutch government is beyond hope in that department and the local
governments of Cities are also becoming more and more corrupt (what
does one expect if one gives the City rulers a bag of money and says
"it's your problem now, do whatever you like with it, just don't come
back for more") one can only hope that public services stay functional
until there's an anti-fascistic movement that can remove those people
that sold public freedom, right, and dignity to the highest commercial
bidding party.

As to my personal situation, I just wanna run python here without
having to 'educate' the computer infrastructure persons of this
library. 

Anton

'any buyers for the european constitution?'



From ewill at sirius.athghost7038suus.net  Tue May 24 17:00:04 2005
From: ewill at sirius.athghost7038suus.net (The Ghost In The Machine)
Date: Tue, 24 May 2005 21:00:04 GMT
Subject: I want to ask you the most important question of your life. The
	question is: Are you saved? It is not a question of how good
	you are, nor if you are a church member,
	but are you saved? Are you sure you will go to Heaven when you die? The
	reason some people don't know for sure if they are going to
	Heaven when they die is because they just don't know. The good
	news is that you can know for sure you are going to Heaven. May
	24, 2005 10:49:20 am
References: <1116946127.220677.235770@o13g2000cwo.googlegroups.com>
Message-ID: <ioecm2-0l5.ln1@sirius.athghost7038suus.net>

In comp.os.linux.advocacy, RLG101166 at yahoo.com
<RLG101166 at yahoo.com>
 wrote
on 24 May 2005 07:48:47 -0700
<1116946127.220677.235770 at o13g2000cwo.googlegroups.com>:
>
> THE MOST IMPORTANT QUESTION OF YOUR LIFE
>
> This is the most important question of your life.
>
> The question is: Are you saved?

I'm tempted to ask if you're *shaved* (I'm not).  Why you're
asking this in technical groups is far from clear.  God
doesn't care if you're using Python, C, Matlab, Linux, or OSX,
at least, not as far as I know.

It is vaguely possible that the Almighty has in fact
upgraded his internal communications network to include
TCP/IP, MBone, and Etherial Prayer Protocol (EPP), but
I'd prefer to see hard evidence.

Followups to a slightly more logical place. :-)

[rest snipped]

-- 
#191, ewill3 at earthlink.net
It's still legal to go .sigless.


From tdelaney at avaya.com  Mon May  2 19:50:34 2005
From: tdelaney at avaya.com (Delaney, Timothy C (Timothy))
Date: Tue, 3 May 2005 09:50:34 +1000
Subject: problem in the compiler ?
Message-ID: <338366A6D2E2CA4C9DAEAE652E12A1DE025204C3@au3010avexu1.global.avaya.com>

Glauco Silva wrote:

> when i creat a RadioButton and put a command = self.Function , this
> function is called in the creation of RadioButton. It?s right this or
> it?s wrong ? 

http://www.catb.org/~esr/faqs/smart-questions.html

I'm pretty sure I can guess exactly what the problem is. I suspect your code looks somewhat like:

    btn = RadioButton(command=self.Function())

Follow the instructions in the above link and you should be able to work out why this is wrong.

If I've failed to read your mind correctly, the above link should also teach you how to make it easier for me to do so.

Tim Delaney


From philippe at philippecmartin.com  Wed May 18 08:46:48 2005
From: philippe at philippecmartin.com (Philippe C. Martin)
Date: Wed, 18 May 2005 12:46:48 GMT
Subject: newbie running IDLE with command line arguments
References: <1116349009.098767.317970@g44g2000cwa.googlegroups.com>
Message-ID: <YOGie.1263$wb2.847@newssvr11.news.prodigy.com>

I might be missing it, but I do not see anyway to set command line params in
IDLE.

You might hage to set the values in your code:
host, port, message = 'localhost', 9000, .....;





crypto wrote:

> Hi,
> 
> I am trying to use IDLE in order to test my program. My program is the
> following:
> 
> import sys, socket
> size = 1024
> host, port, message = sys.argv[1], int(sys.argv[2]), sys.argv[3]
> print host
> 
> How do I run this program on IDLE? I trying Run->Run Module but it
> gives me:
> 
> Traceback (most recent call last):
>   File "C:\Python24\userprograms\simpleclient.py", line 5, in
> -toplevel-
>     host, port, message = sys.argv[1], int(sys.argv[2]), sys.argv[3]
> IndexError: list index out of range
> 
> How do I enter the command arguments?
> 
> Thanks,
> C29



From dfreem3 at nospam.shaw.ca  Wed May 11 18:12:46 2005
From: dfreem3 at nospam.shaw.ca (don freeman)
Date: Wed, 11 May 2005 22:12:46 GMT
Subject: Jesus said, "I am the way, the truth and the life: no one can
	come to the Father(God)(in Heaven),
	but by me." (John 14:6) This means that
	if you die without trusting in Jesus Christ as your Lord and Saviour
	you
	will die in your sins and be forever separated from the love of God in
	a place called Hell. The Holy Bible descibes Hell as a place of eternal
	torment, suffering, pain and agony for all those who have rejected Jesus
	Christ. The good news is that you can avoid Hell by allowing Jesus
	Christ
	to save you today. Only then will you have true peace in your life
	knowing that no matter what happens you are on your way to Heaven. by
	BluWater0523@yahoo.com
In-Reply-To: <d5tmrq$5vt$1@solaris.cc.vt.edu>
References: <1115824563.613661.169620@g47g2000cwa.googlegroups.com>
	<M%qge.1317047$Xk.244810@pd7tw3no> <d5tmrq$5vt$1@solaris.cc.vt.edu>
Message-ID: <yrvge.1318799$Xk.1024469@pd7tw3no>


>>
> 
> Who is this Jesus you are talking about? Does he know Python or 
> something? What do fig trees have to do with Python and/or Jesus?

Bertand Russell said it best:

  Then there is the curious story of the fig tree, which always rather 
puzzled me. You remember what happened about the fig tree. "He was 
hungry; and seeing a fig tree afar off having leaves, He came if haply 
He might find anything thereon; and when He came to it He found nothing 
but leaves, for the time of figs was not yet. And Jesus answered and 
said unto it: 'No man eat fruit of thee hereafter for ever' . . . and 
Peter . . . saith unto Him: 'Master, behold the fig tree which thou 
cursedst is withered away.'" This is a very curious story, because it 
was not the right time of year for figs, and you really could not blame 
the tree. I cannot myself feel that either in the matter of wisdom or in 
the matter of virtue



From slick_mick_00 at hotmail.com  Sat May 21 05:19:52 2005
From: slick_mick_00 at hotmail.com (Michael)
Date: Sat, 21 May 2005 09:19:52 +0000 (UTC)
Subject: moving from c++ to python
Message-ID: <d6mufo$o8v$1@nwrdmz03.dmz.ncs.ea.ibs-infra.bt.com>

Hi,
I'm a pretty sound programmer in C++, but would like to learn python! Does
anyone know of any tutorial s aimed at me?? My biggest confusion so far is
the lack of pointers in Python ......
Regards


Michael




From hello at spamm.er  Tue May 10 09:52:18 2005
From: hello at spamm.er (alex goldman)
Date: Tue, 10 May 2005 06:52:18 -0700
Subject: Language documentation ( was Re: Computing Industry shams)
References: <1115509201.680334.140840@f14g2000cwb.googlegroups.com>
	<874qdezh76.fsf@kafka.homenet> <1415322.AzhuxSBQdk@yahoo.com>
	<x78y2ot3zq.fsf@bolo.xenadyne.com> <1955897.My2EmLpO4s@yahoo.com>
	<pan.2005.05.10.14.08.14.485000@netactive.co.uk>
Message-ID: <1212926.3xzUY5Pt1A@yahoo.com>

Lawrence Kirby wrote:

> On Tue, 10 May 2005 04:58:48 -0700, alex goldman wrote:
> 
>> Sean Burke wrote:
> 
> ...
> 
>>> No, you're just confused about the optimization metric.
>>> In regexes, "greedy" match optimizes for the longest match,
>>> not the fastest.
>>> 
>>> And this is common regex terminology - man perlre and you will
>>> find discussion of "greedy" vs. "stingy" matching.
>> 
>> Read what you quoted again. Everyone (Xah, vermicule, myself) was talking
>> about "greedy" as it's used in graph search and optimization algorithms.
> 
> However the original quote was in the context of regular expressions, so
> discussion of the terminology used in regular expressions is far more
> relevant than the terminology used in graph search and optimisation
> algorithms.

I replied to "And from memory, that is the sort of thing done in Computing
101 and in  Data Structures and Algorithms 101", and I fully explained what
I meant by "greedy" as well. There was no ambiguity.


From Florian.Lindner at xgm.de  Tue May 10 17:50:54 2005
From: Florian.Lindner at xgm.de (Florian Lindner)
Date: Tue, 10 May 2005 23:50:54 +0200
Subject: bad argument type for built-in operation
Message-ID: <d5rabl$kal$02$1@news.t-online.com>

Hello,
I've the traceback:

Traceback (most recent call last):
  File "visualizer.py", line 8, in ?
    main()
  File "visualizer.py", line 5, in main
    g = GraphCreator(f)
  File "/home/florian/visualizer/GraphCreator.py", line 13, in __init__
    self.conf = ConfigReader(config)
  File "/home/florian/visualizer/ConfigReader.py", line 53, in __init__
    graph.sourceReader = CSVReader(filename, firstline, delimiter)
  File "/home/florian/visualizer/ConfigReader.py", line 13, in __init__
    self.reader = csv.reader(f, delimiter=Adelimiter)
TypeError: bad argument type for built-in operation

f ist file object, Adelimiter is ",".

What is wrong there?

Thanks,
Florian


From musiclov2002 at yahoo.com  Wed May 25 11:43:46 2005
From: musiclov2002 at yahoo.com (ParE)
Date: Wed, 25 May 2005 08:43:46 -0700 (PDT)
Subject: Problem in Building a Simple EXE
Message-ID: <20050525154348.93861.qmail@web50801.mail.yahoo.com>

Hello,

   I wrote a small script which I have been trying to
convert to an Executable.  I have tried py2exe and
McMillians.  Both will convert it just fine but when I
run it on a machine that does not have Python
installed it will run the script twice. Any ideas on
how I may fix this?

Paras


		
__________________________________ 
Do you Yahoo!? 
Yahoo! Small Business - Try our new Resources site
http://smallbusiness.yahoo.com/resources/


From peter at engcorp.com  Wed May 11 19:27:38 2005
From: peter at engcorp.com (Peter Hansen)
Date: Wed, 11 May 2005 19:27:38 -0400
Subject: win32com and ADO
In-Reply-To: <1115838522.077741.140940@o13g2000cwo.googlegroups.com>
References: <1115833669.142021.294080@g44g2000cwa.googlegroups.com>
	<d5tk41$ae3$02$1@news.t-online.com>
	<1115838522.077741.140940@o13g2000cwo.googlegroups.com>
Message-ID: <r8ydnQyzdvOqCB_fRVn-gg@powergate.ca>

Chris Curvey wrote:
> Achim,
> 
> Bingo.  The recordset is in item 0.  And that appears to work even on
> systems where makepy has not been run.
> 
> Thanks so much.

So was this not really something that was working *before* you ran 
makepy, or is there still an unsolved mystery there?


From jeffelkins at earthlink.net  Sat May  7 11:43:08 2005
From: jeffelkins at earthlink.net (jeff elkins)
Date: Sat, 7 May 2005 15:43:08 +0000
Subject: Newbie: saving dialog variables
In-Reply-To: <pan.2005.05.07.14.34.12.711047@jerf.org>
References: <mailman.147.1115486676.29826.python-list@python.org>
	<pan.2005.05.07.14.34.12.711047@jerf.org>
Message-ID: <200505071543.09161.jeffelkins@earthlink.net>

On Saturday 07 May 2005 02:34 pm, Jeremy Bowers wrote:
> On Sat, 07 May 2005 13:24:34 +0000, jeff elkins wrote:
> > Howdy,
> >
> > I've written a program that calls an imported dialog to gather some
> > needed input. What's the common method for passing that data back to the
> > caller? I've tried a 'return data' prior to self.Close() ... all that
> > happens then is the dialog won't close. I'm sure this is obvious, but
> > this newbie's stuck!
> >
> > Thanks,
> >
> > Jeff
>
> In general, the dialog is an instance of a class. Once the dialog closes,
> the window should be gone but the instance variable should still be around.
> Common practice is to put the relevant data in the dialog instance member
> for retrieval after closing. In certain cases, the method used to invoke
> the dialog will return the relevant value, but this is somewhat limiting.
> In even more rare cases, the dialog will be popped up by a function,
> giving no direct reference to the dialog at any point, and the value is
> returned by the function; this is generally limited to the "Yes/No/Cancel"
> style dialog or its simpler bretheren ("OK/Cancel" and "OK").
>
> I'm assuming that last one is not the case.
>
> To be more directly helpful, we'd need more data, ideally a code snippet
> fully demonstrating the problem (i.e., a runnable program). But at a bare
> minimum, we'd need to know where this dialog came from. Tk? PyGTK?
> wxPython? Some curses library? MFC?

Jeremy,

The dialog is from wxPython, generated using Boa Constructor. I'm cutting out 
hunks to try to be concise...

===============
import wx

def create(parent):
    return vents(parent)

[wxID_VENTS, wxID_VENTSEXITBUTTON, 
 wxID_VENTSVENTTYPETEXT,
[snip]

] = [wx.NewId() for _init_ctrls in range(14) ]

class vents(wx.Dialog):
    def _init_ctrls(self, prnt):
        wx.Dialog.__init__(self, id=wxID_VENTS, name=u'prefs', parent=prnt,
              pos=wx.Point(418, 320), size=wx.Size(321, 285),
              style=wx.DEFAULT_DIALOG_STYLE, title=u'Ventilator Settings')
        self.SetClientSize(wx.Size(321, 285))

        self.exitButton = wx.Button(id=wxID_VENTSEXITBUTTON, label=u'OK',
              name=u'exitButton', parent=self, pos=wx.Point(60, 250),
              size=wx.Size(85, 30), style=0)
        self.exitButton.Bind(wx.EVT_BUTTON, self.OnExitButtonButton,
              id=wxID_VENTSEXITBUTTON)

        self.venttypeText = wx.TextCtrl(id=wxID_VENTSVENTTYPETEXT,
              name=u'venttypeText', parent=self, pos=wx.Point(64, 24),
              size=wx.Size(144, 25), style=0, value=u'')

[snip]

    def __init__(self, parent):
        self._init_ctrls(parent)
         
# build an array of values entered in the dialog
# return array to calling program


    def OnExitButtonButton(self, event):
          self.Close()

==================

The dialog above is called by:

 def OnVentButtonButton(self, event):
        dlg = vents.vents(self)
        try:
            dlg.ShowModal()
        finally:
            dlg.Destroy()
            

Thanks again,

Jeff

                  






From anton.vredegoor at gmail.com  Tue May 17 07:51:05 2005
From: anton.vredegoor at gmail.com (Anton Vredegoor)
Date: 17 May 2005 04:51:05 -0700
Subject: Python on a public library computer
In-Reply-To: <mailman.67.1116286093.8733.python-list@python.org>
References: <1116069664.779281.320540@g47g2000cwa.googlegroups.com>
	<87r7g6rbz0.fsf@pobox.com>
	<mailman.67.1116286093.8733.python-list@python.org>
Message-ID: <1116330665.197293.198950@o13g2000cwo.googlegroups.com>

Timothy Smith wrote:

> how locked down is the computer? there's a few (brave) public access
> unix shell providers out there. if you could run telnet you could use
them

Sorry, no telnet. Every executable that is not listed is blocked. For
example I can download:

http://prdownloads.sourceforge.net/scintilla/Sc1.exe

but if I run it I get two error messages:

a) a 15 seconds "appguard" message

b} 'access to the specified device, path or file is denied'

Maybe some shell provider is a good idea, however I still think I
should make a cherrypy form of 24 lines or so and run it over there and
simulate a python interpreter on a webpage which I can access from
here. Has this been tried before?

How can I use cookies to identify interpreter sessions?

Anton

'webpython_3000_server_at_xxx.xxx.xxx.xxx_>>>            '



From steven.bethard at gmail.com  Tue May 31 14:45:05 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Tue, 31 May 2005 12:45:05 -0600
Subject: working with pointers
In-Reply-To: <d7iapk$6ck$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
References: <d7iapk$6ck$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
Message-ID: <JJSdnXLcZdUsLQHfRVn-1w@comcast.com>

Michael wrote:
> Do expicit pointers exist in python??
> 
> if i do:
> 
> a = [5,7]
> b = a
> 
> a.empty()
> 
> b = ?

This is what the interactive prompt is for.  Try it:

py> a = [5,7]
py> b = a
py> a.empty()
Traceback (most recent call last):
   File "<interactive input>", line 1, in ?
AttributeError: 'list' object has no attribute 'empty'

Well, looks like you get an AttributeError.  Let's try a method that 
actually exists instead:

py> a.pop()
7
py> a
[5]
py> b
[5]

So, as you can see, since 'a' and 'b' are both names referring to the 
same object, when you modify the object referred to by 'a', you are also 
modifying the object referred to by 'b'.

> how do i do explicit pointers??

I don't know what you mean by "explicit pointers".  Care to elaborate? 
It also might help if you explained what it is you think you want 
"explicit pointers" to do.

STeVe


From fernandomirandamuro at gmail.com  Tue May 31 11:45:45 2005
From: fernandomirandamuro at gmail.com (Fernando M.)
Date: 31 May 2005 08:45:45 -0700
Subject: The need to put "self" in every method
Message-ID: <1117554344.938440.54700@g14g2000cwa.googlegroups.com>

Hi,

i was just wondering about the need to put "self" as the first
parameter in every method a class has because, if it's always needed,
why the obligation to write it? couldn't it be implicit?

Or is it a special reason for this being this way?

Thanks.



From "myname" at example.invalid  Thu May 26 16:49:42 2005
From: "myname" at example.invalid (VK)
Date: Thu, 26 May 2005 22:49:42 +0200
Subject: Access from one class to methode of other class
In-Reply-To: <42963377$1_2@newspeer2.tds.net>
References: <3flu22F8g4u4U1@news.dfncis.de>
	<fesb91tvpjs5kl4dm02k8puu08ln35gtfl@4ax.com>
	<3fmd51F8j4sfU1@news.dfncis.de> <42963377$1_2@newspeer2.tds.net>
Message-ID: <3fmr3tF8k5huU1@news.dfncis.de>

Kent Johnson wrote:
> VK wrote:
> 
>>> On Thu, 26 May 2005 14:33:45 +0200, VK <"myname"@example.invalid>
>>> declaimed the following in comp.lang.python:
>>>
>>>
>>>> Hi, all!
>>>>
>>>> In my programm i have to insert a variable from class 2 to class 1 
>>>> and I get error NameError: global name 'd' is not defined. How do I 
>>>> get access to d.entry.insert() method of class 1
> 
> 
>>
>> from Tkinter import *
>>
>> class First:
>>         def __init__(self):
>>             self.root = Tk()  # create window contents as children to 
>> root..
>>             self.entryframe = Frame(self.root)
>>             self.entryframe.pack(fill=BOTH,expand=1)
>>
>>             self.entry = Entry(self.entryframe)
>>             self.entry.pack(side=TOP,expand=1,fill=BOTH)
>>             self.entry.focus()
>>             self.entry.bind('<Return>',(lambda event: self.fetch())) # 
>> on enter key
>>
>>             self.button = 
>> Button(self.entryframe,text="Call",command=self.getvar)
>>             self.button.pack(side=LEFT,expand=YES,fill=BOTH)
>>
>>             self.root.mainloop()
>>
>>         def fetch(self):
>>             print 'Input => "%s"' % self.entry.get() # get text form 
>> entry
>>
>>         def getvar(self,event=0):
>>             c=Second(self,self.root)
>>
>>
>>
>> class Second:
>>     def __init__(self,parent,s="thing"):
>>         self.root = Tk()
>>         self.ent = Entry(self.root)
>>         self.ent.pack()
>>         self.btn = Button(self.root,text='Fetch',command=self.fetch)
>>         self.btn.pack(side=RIGHT)
>>     def fetch(self):
>>             text = self.ent.get() # get text form entry in this window
>>             d.entry.insert(0, text)# must insert in other window
>>
>> d = First() #First window
> 
> 
> The problem is that First.__init__() never returns so the instance of 
> First is never bound to d. Take the line
>   self.root.mainloop()
> out of First.__init__() and and the line
> d.root.mainloop()
> 
> at the end of the program and it will work as you expect.
> 
> Kent

O, God! It works! Thousend of thanks!

By the way, the second window appears not activ, is there an option to 
make it activ on start?

Reg,VK


From sjmachin at lexicon.net  Tue May  3 18:10:13 2005
From: sjmachin at lexicon.net (John Machin)
Date: Wed, 04 May 2005 08:10:13 +1000
Subject: How to read an integer value from a binary file?
References: <mailman.113.1115142380.6583.python-list@python.org>
Message-ID: <l0sf7192t4743icbco3j1t3u9p15t5l01t@4ax.com>

On Tue, 3 May 2005 19:46:17 +0200, Olivier Elbaz
<olivier.elbaz at gmail.com> wrote:

>Hi,
>
>I read a bmp file (binary file) and I want to extract an integer value
>from it (size value).
>The whole binary file is read inside a list "all_bmp_file".
>I can read the "size" value with the following code:
>for r in all_bmp_file[2:5]:
>   n = struct.unpack('B',r)#B for unsigned char
>   print n
>Result:
>(182,)
>(47,)
>(0,)
>The problem is that I would like to read the 4 bytes (integer) as one
>number like:
>struct.unpack('i','\xb6/\x00\x00')
>Result
>(12214,)
>Note that I can't use  struct.unpack('i',all_bmp_file[2:5]) inside my
>program since I got a syntax error.

You may well have got a syntax error -- we can't tell as you posted
neither the exact code you tried to run, nor the actual error message
that you got. After correcting any syntax error, one would have
expected you to get a run-time error, like the following:

>>> b3 = '\xb6/\x00'
>>> import struct
>>> struct.unpack('i', b3)
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
struct.error: unpack str size does not match format
>>>

Luckily this time there was enough extraneous info for Jeff to
diagnose your problem. In future, please consider posting the code
that you ran, and the results that you got.

For the benefit of others who may fall into the same pit, you may like
to consider logging a feature request on sourceforge for the above
error message to be enhanced to show the sizes:

(e.g.) struct.error: unpack str size (3) does not match format (4)

This may make it easier for the perps to realise what has gone wrong
and save them from having to ask the newsgroup :-)

Cheers,
John


From daha at best.com  Tue May 10 16:44:48 2005
From: daha at best.com (David Harrison)
Date: Tue, 10 May 2005 13:44:48 -0700
Subject: Question: Threading and embedding python in an application
References: <861x8erhez.fsf@guru.mired.org>
Message-ID: <2005051013444816807%daha@bestcom>


Thanks very  much for the responses.  I did indeed look carefully
at the code I was using for threading and didn't see anything
obvious.  I include the python excerpt below.  For small values
of lMax, things seem to work as expected.  Larger values seem
to cause the thread to either hang or terminate (I can't tell which one).

If threading in an imported module is questionable, is there another
way I can use python threads without python being directly
in control?

# -----

import time
import threading

def computation(pFp):
    print >>pFp, "computation starting"
    lStart = time.time()
    lSum = 0
    lMax = 1000000
    for lSlot in xrange(0,lMax):
        if (lSlot % 2) == 0:
            lSum += lSlot
        else:
            lSum -= lSlot
    lEnd = time.time()
    print >>pFp, "Sum is", lSum
    print >>pFp, "Time is", lEnd-lStart, "seconds"

class MyThread(threading.Thread):
    def __init__(self, pLog):
        threading.Thread.__init__(self, name="Compute")
        self.mLog = pLog
    def run(self):
        lFp = open(self.mLog, "a")
        print >>lFp, "This is run", self
        computation(lFp)
        lFp.close()

t = MyThread("/var/tmp/big.log")
t.start()


On 2005-05-10 12:48:36 -0700, Mike Meyer <mwm at mired.org> said:

> David Harrison <daha at best.com> writes:
> 
>> I am working on an application on Mac OS X that calls out
>> to python via PyImport_ImportModule().  I find that if
>> the imported module creates and starts a python thread,
>> the thread seems to be killed when the import of
>> the module is complete.   Is this expected?  Does
>> python have to be in control to allow threads to run?
> 
> Having an imported module create a thread is a bad idea. For one
> thing, the thread won't get created if the module is imported a second
> time. While this may be the desired behavior, it can also be
> surprising. For another, there are known behaviors in the Python
> threading code that can cause deadlocks when you do this. I say
> "behaviors" instead of "bugs", because the last time this came up,
> there was no indication that anyone was interested in fixing this.
> 
>       <mike




From philippe at philippecmartin.com  Sat May  7 12:01:06 2005
From: philippe at philippecmartin.com (Philippe C. Martin)
Date: Sat, 07 May 2005 16:01:06 GMT
Subject: Encryption with Python?
References: <1115324411.952821.150780@o13g2000cwo.googlegroups.com>
Message-ID: <6D5fe.1842$7U.1313@newssvr30.news.prodigy.com>

I use http://www.amk.ca/python/code/crypto.html

Regards,

Philippe



Blake T. Garretson wrote:

> I want to save some sensitive data (passwords, PIN numbers, etc.) to
> disk in a secure manner in one of my programs.  What is the
> easiest/best way to accomplish strong file encryption in Python?  Any
> modern block cipher will do: AES, Blowfish, etc.  I'm not looking for
> public key stuff; I just want to provide a pass-phrase.
> 
> I found a few modules out there, but they seem to be all but abandoned.
>  Most seem to have died several years ago.  The most promising package
> is A.M. Kuchling's Python Cryptography Toolkit
> (http://www.amk.ca/python/code/crypto.html).
> 
> Is this the defacto Python encryption solution?  What does everyone
> else use?  Any other suggestions?  The SSLCrypto package
> (http://www.freenet.org.nz/python/SSLCrypto/) may be a good alternative
> too, but I am not sure if it is actively maintained.
> 
> Thanks,
> Blake



From vinay_sajip at yahoo.co.uk  Wed May 18 18:19:13 2005
From: vinay_sajip at yahoo.co.uk (Vinay Sajip)
Date: Wed, 18 May 2005 22:19:13 +0000 (UTC)
Subject: logging problems
References: <loom.20050428T142438-258@post.gmane.org>
	<mailman.34.1114796788.14961.python-list@python.org>
	<1116334261.953335.307340@g14g2000cwa.googlegroups.com>
Message-ID: <loom.20050519T001743-581@post.gmane.org>

simon.dahlbacka <at> gmail.com <simon.dahlbacka <at> gmail.com> writes:

> 
> I tried moving the import traceback to the start of  the file
> (logging/__init__.py) but that did not seem to have any effect?
> I suppose the fix was in version 1.26 in cvs?
> 

Did you do this for all cases in __init__.py? You may also need to do it in 
config.py if you are using it.

Regards,

Vinay Sajip




From hancock at anansispaceworks.com  Mon May 23 00:30:55 2005
From: hancock at anansispaceworks.com (Terry Hancock)
Date: Sun, 22 May 2005 23:30:55 -0500
Subject: Reverse engineer  Object Oriented Python code
In-Reply-To: <0BAE938A1E68534E928747B9B46A759A1A0C5A@EXCNYSM0A1AH.nysemail.nyenet>
References: <0BAE938A1E68534E928747B9B46A759A1A0C5A@EXCNYSM0A1AH.nysemail.nyenet>
Message-ID: <200505222330.55692.hancock@anansispaceworks.com>

On Sunday 22 May 2005 09:02 am, Aggarwal, Vikas (OFT) wrote:
>  I want to try reverese engineering a Server written in Python. 
> Its is all object oriented stuff with some use of Design patterns.
> 
> Umbrello in Linux has no support for python.
> I am not sure if Rational Rose can do this for me (Linux Eval version).
> Does any one know UML tool which can reverse engineer python classes into 
>  UML and give me class diagrams etc.

Well, I had some success with this, once.  I'm pretty sure I was using
"happydoc" to do it. Try googling for that.  It can create a dia file with
UML formatting, IIRC.  If it wasn't that, it had to be "pydoc", which is
also quite useful.

I wouldn't call this "reverse engineering" by the way, but rather 
"self documentation".

Cheers,
Terry

--
Terry Hancock ( hancock at anansispaceworks.com )
Anansi Spaceworks  http://www.anansispaceworks.com



From jtr at ofb.net  Fri May 27 21:24:06 2005
From: jtr at ofb.net (John Reese)
Date: Sat, 28 May 2005 01:24:06 +0000 (UTC)
Subject: unbuffering std streams in code
Message-ID: <slrnd9fi1m.aod.jtr@ofb.net>

You know how you can specify that stderr, stdin, stdout should be
unbuffered by running python with the -u switch?  Is there any way I
can have the same affect in code by doing something to the sys.std*
variables?


From python at hope.cz  Mon May  2 08:21:33 2005
From: python at hope.cz (Lad)
Date: 2 May 2005 05:21:33 -0700
Subject: ICQ module ?
Message-ID: <1115036493.563615.89250@l41g2000cwc.googlegroups.com>

Hello ,
Is there an ICQ module? I would like to send a message to users in my
contact list, check if a user is online etc.
Is there a support in Python?
Thanks
L.B



From peter at engcorp.com  Tue May 10 21:24:45 2005
From: peter at engcorp.com (Peter Hansen)
Date: Tue, 10 May 2005 21:24:45 -0400
Subject: Need a little parse help
In-Reply-To: <86br7imw8e.fsf@guru.mired.org>
References: <mailman.310.1115747834.29826.python-list@python.org>
	<1115756261.255249.299870@f14g2000cwb.googlegroups.com>
	<1115767302.830054.143810@f14g2000cwb.googlegroups.com>
	<86br7imw8e.fsf@guru.mired.org>
Message-ID: <B9OdnY3ex--JwhzfRVn-3g@powergate.ca>

Mike Meyer wrote:
> I'd like to note that failing to close the file explicitly is a bad
> habit. You really should invoke the close method, rather than relying
> on the garbage collector to close them for you. This means you do need
> a variable to hold the file object. 99% of the time nothing bad will
> happen if you skip this, but that 1% can always come back to byte you
> in the *ss.

While that's generally true, it's worth noting that for small utility 
scripts of the "throw-away" variety, adding in the code necessary to do 
properly what Mike describes can make the difference between the code 
being quick and simple and (at least for those fairly new to Python) 
awkward and confusing, and thus potentially buggy.

In my opinion, if the code fits on one screen and just reads stuff from 
one file and, maybe, writes to another, you can safely and with clean 
conscience ignore Mike's advice (but remember it for later!).

-Peter


From bokr at oz.net  Thu May  5 13:13:01 2005
From: bokr at oz.net (Bengt Richter)
Date: Thu, 05 May 2005 17:13:01 GMT
Subject: annonymous functions -- how to
References: <1115239458.776800.240080@g14g2000cwa.googlegroups.com>
	<d5bdip$bpp$05$2@news.t-online.com>
	<42795acb.685370470@news.oz.net>
	<1115264804.625020.203800@f14g2000cwb.googlegroups.com>
	<YuWdnVUxIKrdmuffRVn-oA@powergate.ca>
Message-ID: <427a410e.744317932@news.oz.net>

On Thu, 05 May 2005 07:45:33 -0400, Peter Hansen <peter at engcorp.com> wrote:

>Jason Mobarak wrote:
>> What's wrong with:
>> 
>> def blah():
>>   def _ (a, b, c):
>>     a = a + 2
>>     print "stmt 2"
>>     return a+b/c
>>   return doSomethingWith(_)
>> 
>> It's basically "anonymous", it just uses a name that you don't care
>> about. AFAIK, it can be immediately clobbered later if need be.
>> Otherwise, the function shouldn't be anonymous.
>
>Or even better:
>
>def blah():
>    def doJasonsAlgorithm(a, b, c):
>       a = a + 2
>       print "stmt 2"
>       return a+b/c
>    return doSomethingWith(doJasonsAlgorithm)
>
>That way you've got reasonably self-documenting code, and don't have to 
>face an annoyed maintainer saying "what a jerk: he didn't comment this 
>or even give it a useful name... idiot... grumble grumble."
>
>I doubt there's a valid usecase for a "anonymous" function that has more 
>than a line or two.  Personally, I don't think there's a good usecase 
>for an anonymous function longer than one line...
>
Yes, but only the BDFL can outlaw things on that kind of basis ;-)

My post was just to play with "anonymous" a little, not to motivate
more examples of strange call layering and dynamic execution of defs
that don't change etc. ;-)

BTW, I view a def as a kind of assignment statement with the target restricted
to a local bare name. I.e.,

    def foo(): pass   # def <restricted assignment target>():pass

So why have this form of assignment? And why restrict it to a bare name, even
if you want to keep the def for mnemonic convention to use as usual?

I.e., why not loosen def to allow e.g.

    def MyClass.method(self): pass
or
    @staticmethod
    def MyClass.square(x): return x*x

or
    def fdict['sqr'](x): return x*x

Well, I can see a reason not to do the last that way. It would be much clearer using
an anonymous def, e.g.,

    fdict['sqr'] = def(x): return x*x

And then you can say lambda is fine for that, except for the limitation
that the body be just an expression. Then you might ask, why not bend that a little? E.g.,

    fdict['sqrt'] = def(x):
	if x < 0: raise ValueError, 'x must be non-negative, not %r' %x
        return math.sqrt(x)

And then, why not allow an anonymous defs as expressions anywhere expressions can go?
(indentation problems are actually easy to overcome).

Anyway, in general, I'd rather be persuaded than forced ;-)

Regards,
Bengt Richter


From fredrik at pythonware.com  Mon May 30 06:43:24 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Mon, 30 May 2005 12:43:24 +0200
Subject: 2D vector graphics Problem
References: <4299c4de$0$17099$5fc30a8@news.tiscali.it>
	<4299eb5d$1@nntp0.pdx.net>
Message-ID: <d7eqjg$32m$1@sea.gmane.org>

Scott David Daniels wrote:

> Your equation for y uses the new x, not the old x.  Be more free with
> names.  Here's one way to write it:
>
> class ...
>     def rotate(self, angle):
>         '''Rotate point angle radians around relPoint'''
>         x, y = self.coords
>         xRel, yRel = self.relPoint
>         sin, cos = math.sin(angle), math.cos(angle)
>         newx = x * cos - y * sin - xRel * cos + yRel * sin + xRel
>         newy = x * sin + y * cos - xRel * sin - yRel * cos + yRel
>         self.coords = newx, newy

and here's another one:

    http://online.effbot.org/2004_09_01_archive.htm#tkinter-complex

</F> 





From peter at engcorp.com  Tue May 17 14:25:12 2005
From: peter at engcorp.com (Peter Hansen)
Date: Tue, 17 May 2005 14:25:12 -0400
Subject: os.popen vs os.system
In-Reply-To: <d6dasg$32r$1@solaris.cc.vt.edu>
References: <d6dasg$32r$1@solaris.cc.vt.edu>
Message-ID: <DN2dnbQrn7HQqhffRVn-vg@powergate.ca>

rbt wrote:
> Is it more appropriate to use os.popen or os.system on a windows XP 
> client? I'm calling the operting system's shutdown function like this:
> 
> restart = os.popen(shutdown -r -f)
> print restart.read()
> restart.close()

I don't think there's any significant difference between the above 
(assuming you add in the missing quotation marks) and 
os.system('shutdown -r -f'), except that the os.system() approach is 
shorter and more readable if you are simply discarding or printing the 
output like that.

 > If it matters, I'm doing this remotely over sockets.

You can't be doing exactly that, since there are no sockets involved... 
do you mean the above call is executed -- on the receiving end -- after 
some signal is received via a socket in another part of the code? 
That's not going to have any effect on things...

-Peter


From donn at u.washington.edu  Mon May 16 14:12:47 2005
From: donn at u.washington.edu (Donn Cave)
Date: Mon, 16 May 2005 11:12:47 -0700
Subject: incorrect(?) shlex behaviour
References: <1116102603.247959.284790@g49g2000cwa.googlegroups.com>
Message-ID: <donn-54994A.11124716052005@gnus01.u.washington.edu>

In article <1116102603.247959.284790 at g49g2000cwa.googlegroups.com>,
 "bill" <bill.pursell at gmail.com> wrote:

> Consider:
> >>> import shlex
> >>> shlex.split('$(which sh)')
> ['$(which', 'sh)']
> 
> Is this behavior correct?  It seems that I should
> either get one token, or the list
> ['$','(','which','sh',')'],
> but certainly breaking it the way it does is
> erroneous.  
> 
> Can anyone explain why the string is being split
> that way?

Python 2.3.5 (#1, Mar 20 2005, 20:38:20) 
[GCC 3.3 20030304 (Apple Computer, Inc. build 1809)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import shlex
>>> print shlex.__doc__
A lexical analyzer class for simple shell-like syntaxes.


This has a little potential to mislead.  Bourne shell
syntax is naturally "shell-like", but it is not "simple" -
as grammars go, it's a notorious mess.  In theory, someone
could certainly write Python code to accurately parse Bourne
shell statements, but that doesn't appear to have been the
intention here.  The "Parsing Rules" section of the documentation
describes what you can expect, and right off hand I don't see
how the result you got was erroneous.

   Donn Cave, donn at u.washington.edu


From klaus at seistrup.dk  Mon May  2 13:09:42 2005
From: klaus at seistrup.dk (Klaus Alexander Seistrup)
Date: Mon, 2 May 2005 17:09:42 +0000 (UTC)
Subject: popen2 psql
References: <mailman.37.1115051453.6583.python-list@python.org>
Message-ID: <slrnd7cnmm.tnj.klaus@main.szn.dk>

Mage wrote:

> I tried to write a proxy script for "psql" command. I need some
> query log. I failed to read from the file object.

The psql command is probably linked against readline; did you look
in the ~/.psql_history file?

Cheers,

-- 
Klaus Alexander Seistrup
Magnetic Ink, Copenhagen, Denmark
http://magnetic-ink.dk/


From lihuimail at gmail.com  Tue May 31 23:35:28 2005
From: lihuimail at gmail.com (lihui)
Date: Wed, 1 Jun 2005 11:35:28 +0800
Subject: Rss lib in python?
In-Reply-To: <1117595420.493606.189760@o13g2000cwo.googlegroups.com>
References: <c68cb37c.0505311838.2a4d7b65@posting.google.com>
	<1117595420.493606.189760@o13g2000cwo.googlegroups.com>
Message-ID: <5805630705053120357a2be0ae@mail.gmail.com>

PyRSS2Gen

http://www.dalkescientific.com/Python/PyRSS2Gen.html

example:
mport datetime
import PyRSS2Gen

rss = PyRSS2Gen.RSS2(
    title = "Andrew's PyRSS2Gen feed",
    link = "http://www.dalkescientific.com/Python/PyRSS2Gen.html",
    description = "The latest news about PyRSS2Gen, a "
                  "Python library for generating RSS2 feeds",

    lastBuildDate = datetime.datetime.now(),

    items = [
       PyRSS2Gen.RSSItem(
         title = "PyRSS2Gen-0.0 released",
         link = "http://www.dalkescientific.com/news/030906-PyRSS2Gen.html",
         description = "Dalke Scientific today announced PyRSS2Gen-0.0, "
                       "a library for generating RSS feeds for Python.  ",
         guid = PyRSS2Gen.Guid("http://www.dalkescientific.com/news/"
                          "030906-PyRSS2Gen.html"),
         pubDate = datetime.datetime(2003, 9, 6, 21, 31)),
       PyRSS2Gen.RSSItem(
         title = "Thoughts on RSS feeds for bioinformatics",
         link = "http://www.dalkescientific.com/writings/diary/"
                "archive/2003/09/06/RSS.html",
         description = "One of the reasons I wrote PyRSS2Gen was to "
                       "experiment with RSS for data collection in "
                       "bioinformatics.  Last year I came across...",
         guid = PyRSS2Gen.Guid("http://www.dalkescientific.com/writings/"
                               "diary/archive/2003/09/06/RSS.html"),
         pubDate = datetime.datetime(2003, 9, 6, 21, 49)),
    ])

rss.write_xml(open("pyrss2gen.xml", "w"))




31 May 2005 20:10:20 -0700, nephish <cotyspend at yahoo.com>:
> Hey man, i would like to know this too.
> hope someone knows...
> 
> --
> http://mail.python.org/mailman/listinfo/python-list
> 


-- 
my gmail:lihuimail(at)gmail.com


From eurleif at ecritters.biz  Tue May  3 18:49:18 2005
From: eurleif at ecritters.biz (Leif K-Brooks)
Date: Tue, 03 May 2005 22:49:18 GMT
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <Pine.SOL.4.33.0505031353330.17143-100000@innovate>
References: <d4u60o$akh$1@news2.netvision.net.il>
	<mailman.47.1114818531.14961.python-list@python.org>
	<3dg5isF6qe1nhU1@news.dfncis.de> <d4v1an$j7q$1@sea.gmane.org>
	<1f7befae05043000165448b8d@mail.gmail.com>
	<mailman.55.1114846630.14961.python-list@python.org>
	<Pine.SOL.4.33.0505031353330.17143-100000@innovate>
Message-ID: <OdTde.2823$Cz3.434824@monger.newsread.com>

Chris McAloney wrote:
> Okay, so I've been working on level seven for a LONG time now.  I've
> decoded the first message to get the hint for the next level.  Using the
> same tactics, then I decode the hint as well, but there are non-printable
> characters. 

Frira be srjre pbcvrf bs gur fnzr cvkry va n ebj ner bar punenpgre, ohg 
rvtug cvkryf ner gjb punenpgref.


From dotpyFE at gmail.com  Sun May  1 17:07:15 2005
From: dotpyFE at gmail.com (Lucas Raab)
Date: Sun, 01 May 2005 21:07:15 GMT
Subject: msvccompiler issues
Message-ID: <7ybde.2315$pe3.608@newsread3.news.atl.earthlink.net>

I'm trying to compile a package from source and whenever I tried to 
compile, distutils gave me error about not have VC7. However, I've got 
VB7 and so I've also got the VC7 compiler that came in the installation. 
BTW, I've got Visual Studio .NET 2003 and Python 2.4.1. I tried looking 
the distutils code, but it's way over my head. I found the find_exe 
function in msvccompiler.py file, but it seems to be not finding cl.exe. 
I made sure the path to cl.exe was set in the winXP Path variable. Any 
help is appreciated.

-- 
--------------------------
Lucas Raab
lvraab"@"earthlink.net
dotpyFE"@"gmail.com
AIM:	Phoenix11890
MSN:	dotpyfe "@" gmail.com
IRC:	lvraab
ICQ:	324767918
Yahoo:	Phoenix11890


From peter at engcorp.com  Sat May  7 21:29:48 2005
From: peter at engcorp.com (Peter Hansen)
Date: Sat, 07 May 2005 21:29:48 -0400
Subject: New Python regex Doc
In-Reply-To: <mailman.155.1115511845.29826.python-list@python.org>
References: <1113301533.054410.203710@z14g2000cwz.googlegroups.com>	<mailman.1813.1113355346.1799.python-list@python.org>	<1113856843.023012.165500@l41g2000cwc.googlegroups.com>	<1113908069.264676.207090@g14g2000cwa.googlegroups.com>	<1115328523.852744.110390@f14g2000cwb.googlegroups.com>	<1115423751.016177.250650@o13g2000cwo.googlegroups.com>	<1115444726.627426.172260@g14g2000cwa.googlegroups.com>	<1115508491.462229.294020@o13g2000cwo.googlegroups.com>
	<mailman.155.1115511845.29826.python-list@python.org>
Message-ID: <K8GdnXJvuJJx9uDfRVn-tA@powergate.ca>

Ron Adam rote:
> I suppose that if you respectfully offer something even a little better 
> it would be respectfully accepted, after due review of course.  You will 
> probably even get many helpful suggestions along they way because you 
> will have created a situation where every one wins.

Remarkably, and because of the special nature of this newsgroup, Ron is 
right: "something even a little better" would be respectfully accepted, 
in spite of the incredibly anti-social nature of nearly all of Xah' past 
postings here.

In the (unlikely, IMHO) event that Xah can change, and wants to submit 
something "even a little better", here are a few suggestions:

1. Use a spell checker.

2. Use a grammar checker.  Many people can get away without this tool, 
but pretty clearly Xah cannot.

3. Realize that posting partial improvements to this newsgroup will not 
really help anyone, unless you are explicitly soliciting feedback on the 
wording or structure with the intent of submitting the changes via the 
proper channels at a later time.

4. Clean up all loose ends, including removing comments of the sort "to 
be rewritten later", and "still needs work" and such.  Somebody has to 
do the work; if you leave it undone, the changes are unlikely to be 
accepted.

-Peter


From bdesth.quelquechose at free.quelquepart.fr  Wed May 11 16:02:53 2005
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Wed, 11 May 2005 22:02:53 +0200
Subject: Problem combining python code and html
In-Reply-To: <42822b3d$0$653$ba624c82@nntp02.dk.telia.net>
References: <42822b3d$0$653$ba624c82@nntp02.dk.telia.net>
Message-ID: <42826023$0$8235$636a15ce@news.free.fr>

Hansan a ?crit :
> Hi all, I hope you have time to help me out a little. My problem is that I 
> want to combine some python code I have made with some html templates, I 
> found a tutorial at dev shed: 
(snip a whole lot of code)

> But I get the error message:
> error: multiple repeat
>       args = ('multiple repeat',) ", Content,TemplateInput) File 
> "/home//Python-2.3.2//lib/python2.3/sre.py", line 151, in subn return 
> _compile(pattern, 0).subn(repl, string, count)
> I tried making the templates global, but that dosnt help either.

Why should it ?

> Is the code from dev shed wrong, 

Seems like... And it is *very* ugly.

> And is there a nother way to combine python code and html templates?

Many. The one I prefer is Zope Page Templates (there's a free-standing 
implementation named SimpleTAL), but I didn't tried all and every 
existing solutions.



From skip at pobox.com  Sun May  1 19:25:40 2005
From: skip at pobox.com (Skip Montanaro)
Date: Sun, 1 May 2005 18:25:40 -0500
Subject: How to kill a SocketServer?
In-Reply-To: <7xpswa4wfu.fsf@ruckus.brouhaha.com>
References: <7xwtqj1lh1.fsf@ruckus.brouhaha.com>
	<mailman.83.1114972348.14961.python-list@python.org>
	<7xpswa4wfu.fsf@ruckus.brouhaha.com>
Message-ID: <17013.25972.965219.254879@montanaro.dyndns.org>


    >> I use precisely that scheme with (I think *) no problem.  The only
    >> maybe significant difference I see is that I subclass ThreadingMixin
    >> so that it creates daemon threads: ...

    Paul> According to the docs, you don't need the subclass, you can just
    Paul> set the "daemon_threads" property on the server, e.g.
    ...

It's possible that my subclassing existed before this feature was available
(it's been in use for about 5 years now) or that I just missed that
mechanism.

    >> (*) Maybe my XML-RPC server actually accepts one more connection
    >> after I set server.shutdown to True before it actually exits.  I'll
    >> have to take a look at that.

    Paul> Yes, this is precisely what I'm asking.  How do you get the server
    Paul> to go away without going out of your way to connect to it again?
    Paul> Don't you notice if it stays around?

It fields lots of requests, so it's possible that another request arrives
after I exit, but I don't think that's the case.  I'll try to take a look in
isolation when I have a moment.

Skip


From bogus@does.not.exist.com  Tue May  3 09:35:02 2005
From: bogus@does.not.exist.com ()
Date: Tue, 03 May 2005 13:35:02 -0000
Subject: No subject
Message-ID: <mailman.54.1572219011.3356.python-list@python.org>

#! rnews 1990
Newsgroups: comp.lang.python
Path: news.xs4all.nl!newsspool.news.xs4all.nl!transit.news.xs4all.nl!news-spur1.maxwell.syr.edu!news.maxwell.syr.edu!nntp.abs.net!attws2!ip.att.net!NetNews1!xyzzy!nntp
From: Harry George <harry.g.george at boeing.com>
Subject: Re: Py2Exe security
X-Nntp-Posting-Host: cola2.ca.boeing.com
Content-Type: text/plain; charset=us-ascii
Message-ID: <xqxd5s8v46c.fsf at cola2.ca.boeing.com>
User-Agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.4
Lines: 35
Sender: hgg9140 at cola2.ca.boeing.com
Organization: The Boeing Company
References: <1115121780.404491.84240 at f14g2000cwb.googlegroups.com>
Mime-Version: 1.0
Date: Tue, 3 May 2005 13:18:19 GMT
Xref: news.xs4all.nl comp.lang.python:375624

"Terje Johan Abrahamsen" <terjeja at gmail.com> writes:

> Hello.
> 
> We have created some programs in Python that are to be distributed
> around. The programs will be made into .exe files by py2exe. However,
> in the source there are certain webadresses, logins and passwords that
> the programs use, that we would like to keep away from the end users.
> They will use them thru the program, but we would like them not to be
> extracted and used separately for other purposes.
> 
> Is the compiling by py2exe enough? I have opened all the files in the
> directory py2exe has made, and have not found anything I could read in
> clear text. However, that does not mean that others can not. Is it
> possible to extract these passwords, adresses and logins from the
> sourcecode? If py2exe is not enough, is there some other simple tools
> we can use to hide the source from the endusers?
> 
> Thanks in advance.
> 

Putting passwords in your program is a bad idea, with or without
Python and py2exe.  Even if you wrote the program in obfuscated C, and
stripped comments etc, an attacker could use "strings" to search for
candidate passwords.  Or just start at the beginning of the program
and use each byte as a candidate starting char.


Since you are working on MS Windows, consider getting:
M. Howard, D. LeBlanc, "Writing Secure Code", Microsoft Press, 2002.

-- 
harry.g.george at boeing.com
6-6M21 BCA CompArch Design Engineering
Phone: (425) 294-4718


From nnorwitz at gmail.com  Mon May 23 09:09:39 2005
From: nnorwitz at gmail.com (Neal  Norwitz)
Date: 23 May 2005 06:09:39 -0700
Subject: Binding the names in a module in a class instance
References: <1116827601.256966.287070@f14g2000cwb.googlegroups.com>
Message-ID: <1116853779.431300.240860@z14g2000cwz.googlegroups.com>

Jacob H wrote:
> Hello all,
>
> I would like to be able to take a module full of class instances,
> functions, etc and bind all its names to a separate container class
in
> a different module. I have come up with the following way to do it..

[snip]

> I feel uneasy about this method. I foresee bad namespace clashes.
> What's a better way? :)

Perhaps this is more like what you are looking for:

    import stuff      # stuff we want to copy
    import everything # initially empty module where to store stuff

    # loop over each attribute name in stuff
    for attr in dir(stuff):
        # skip over __special__ attributes, probably don't want them
        if attr.startswith('__') and attr.endswith('__'):
            continue

        value = getattr(stuff, attr)
        setattr(everything, attr, value)

You can add more checking for clashes or whatever by looking at the
attribute name (attr) which is a string.

hth,
n



From peter at somewhere.com  Mon May 23 10:56:29 2005
From: peter at somewhere.com (Peter Maas)
Date: Mon, 23 May 2005 16:56:29 +0200
Subject: blabla
In-Reply-To: <pan.2005.05.23.17.41.44.849654@gmail.com>
References: <pan.2005.05.23.17.41.44.849654@gmail.com>
Message-ID: <d6squm$cke$1@swifty.westend.com>

Noud Aldenhoven schrieb:
> Python rulz and sorry for this spam...

news.test is made for testing :)

-- 
-------------------------------------------------------------------
Peter Maas,  M+R Infosysteme,  D-52070 Aachen,  Tel +49-241-93878-0
E-mail 'cGV0ZXIubWFhc0BtcGx1c3IuZGU=\n'.decode('base64')
-------------------------------------------------------------------


From peter at engcorp.com  Wed May 11 10:01:53 2005
From: peter at engcorp.com (Peter Hansen)
Date: Wed, 11 May 2005 10:01:53 -0400
Subject: Decompyle will not Compile.
In-Reply-To: <1115817619.315446.230860@g44g2000cwa.googlegroups.com>
References: <1115817619.315446.230860@g44g2000cwa.googlegroups.com>
Message-ID: <iM-dndOqGbASjR_fRVn-rA@powergate.ca>

eternl_knight at yahoo.com wrote:
> I am writing code for Poser 6 (which has not as yet updated to the
> latest Python) and have just lost a substantial chunk of code - part of
> which being an algorithm I have been tweaking for a couple of weeks
> now. As such, getting even part of the PYC to decompile would be a
> great help.

Apparently this site will let you get your code back, though for a fee. 
  Not sure you were aware of it.

http://www.crazy-compilers.com/decompyle/service.html

-Peter


From elbertlev at hotmail.com  Fri May 20 17:29:42 2005
From: elbertlev at hotmail.com (elbertlev at hotmail.com)
Date: 20 May 2005 14:29:42 -0700
Subject: Is Python suitable for a huge, enterprise size app?
In-Reply-To: <pan.2005.05.18.20.56.27.152785@dalkescientific.com>
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>
	<jmbsl2-opn.ln1@lairds.us>
	<1116442276.918194.194110@g44g2000cwa.googlegroups.com>
	<mailman.163.1116443300.8733.python-list@python.org>
	<pan.2005.05.18.20.56.27.152785@dalkescientific.com>
Message-ID: <1116624582.647290.260160@g14g2000cwa.googlegroups.com>

C programs also can be disassembled. Serious people do not consider
braking the machine code harder byte-code.



From coldtortuga at yahoo.com  Tue May 17 12:32:18 2005
From: coldtortuga at yahoo.com (Nyet Ya Koshka)
Date: 17 May 2005 09:32:18 -0700
Subject: Unique Elements in a List
In-Reply-To: <Michael.J.Fromberger-1445B3.20072709052005@localhost>
References: <1115676903.432187.294910@z14g2000cwz.googlegroups.com>
	<Michael.J.Fromberger-1445B3.20072709052005@localhost>
Message-ID: <1116347538.537569.192870@o13g2000cwo.googlegroups.com>

> One reasonable solution might be as follows:
>
>   def unique_elts(seq):
>     elts = {}
>     for pos, elt in enumerate(seq):
>       elts.setdefault(elt, []).append(pos)
>
>     return [ (x, p[0]) for (x, p) in elts.iteritems()
>              if len(p) == 1 ]
>

Minor tweak to conserve space:

def bachelor_filter(iter_over_hashables):
   B={}
   for index, elem in enumerate(iter_over_hashables):
      if B.setdefault(elem, index) != index:
         B[elem]=None
   return [pair for pair in B.items() if pair[1] is not None]



From dalke at dalkescientific.com  Tue May  3 01:36:17 2005
From: dalke at dalkescientific.com (Andrew Dalke)
Date: Tue, 03 May 2005 05:36:17 GMT
Subject: lists in cx_Oracle
References: <pan.2005.04.05.18.44.52.434578@dalkescientific.com>
	<pan.2005.04.30.17.02.16.988085@dalkescientific.com>
	<1115047620.602263.180780@o13g2000cwo.googlegroups.com>
	<pan.2005.05.02.16.33.57.959347@dalkescientific.com>
	<1115056746.166202.97140@f14g2000cwb.googlegroups.com>
	<pan.2005.05.03.04.15.54.256350@dalkescientific.com>
	<mailman.77.1115096182.6583.python-list@python.org>
Message-ID: <pan.2005.05.03.05.36.19.884795@dalkescientific.com>

Steve Holden wrote:
> Do you think this is a DB-API 3-ish kind of a thing, or would it layer 
> over DB-API 2 in a relatively platform-independent manner?
    ... 
> but-you-may-know-better-ly y'rs  - steve

I am a tyro at this.  I had to find some tutorials on SQL
to learn there even was an IN clause for the WHERE statement.
All told I've had about 1 hour experience using DB-API 2.

I thought this would be a common enough need that others
would have chimed in by now saying "oh yes, you just need
to XYZ" where XYZ is something cleaner than "make a new
string to execute".

				Andrew
				dalke at dalkescientific.com



From jmdeschamps at cvm.qc.ca  Sun May 15 19:16:33 2005
From: jmdeschamps at cvm.qc.ca (jean-marc)
Date: 15 May 2005 16:16:33 -0700
Subject: Importing and namespace visibility
Message-ID: <1116198993.514542.96350@g44g2000cwa.googlegroups.com>

As an application programmer, I'm not well versed in the material
aspects of computing (memory, cpu, bus and all). My understanding of
imports in Python is such: the __main__ program is the center piece
which holds the programs reference: globals, functions, classes,
modules etc. The objects of this file (functions and classes) are
directly accessible; 'import suchModule' s objects are attainable
through the *qualified name* (module.function); the 'from suchModule
import *' the objects are directly attainable.

A recent msg from F. Lundh
http://groups.google.ca/group/comp.lang.python/browse_frm/thread/f9bf9734fa19eee9/8a51ab24748251d8?q=&rnum=12&hl=en#8a51ab24748251d8
suggested being careful with recursive importing...

BUT, of all this I thought that if you import module1, then module2
(into __main__), objects from module1 would be available to objects of
module2 which came (into memory space) after module1 was loaded. This
does not seem to be the case, and module2 requires an 'import module1'
statement in its own file to see this last module's objects.  This is
not the recursive situation that was a pitfall Fredrik was evoking.
What am I missing here???

The reason I'm asking is to setup team development, using Tkinter,
where different people will be programming diverse sections to be
'packed' into the main interface...

Thanks for any help in understanding what is happening in this
situation,

JMD



From roccomoretti at hotpop.com  Thu May 12 17:38:56 2005
From: roccomoretti at hotpop.com (Rocco Moretti)
Date: Thu, 12 May 2005 16:38:56 -0500
Subject: Python Documentation (should be better?)
In-Reply-To: <mailman.430.1115873617.29826.python-list@python.org>
References: <mailman.389.1115837608.29826.python-list@python.org>	<rs2dnWXMCe-Rwx_fRVn-qw@comcast.com>
	<d5tnfo$1eg$1@sea.gmane.org>
	<mailman.430.1115873617.29826.python-list@python.org>
Message-ID: <d60idd$a90$1@news.doit.wisc.edu>

Terry Hancock wrote:

> *But you do have to remember that strings are documented under "sequences"
> this is probably my biggest complaint about the Library Reference --- something
> as important as string methods should have its own heading in the top-level
> outline.  But that's a nitpick, of course.

I'd agree. My one complaint about the documentation, if I had one, would 
be that the organizational structure is non-intuitive. ("Why are 
dictionaries/lists/strings part of the 'library'?") But once you get the 
organization down, I have few complaints.


From daniel_usenet at yahoo.de  Sun May 15 07:07:33 2005
From: daniel_usenet at yahoo.de (Daniel Lichtenberger)
Date: Sun, 15 May 2005 13:07:33 +0200
Subject: mod_python and logging
Message-ID: <3eoorhF46dasU1@individual.net>

Hi,

I'm looking for a logging module to be used in a mod_python-powered
website. Python 2.3's logging package seems like a good fit, however
I'm not sure if it's completely safe to use it under high load. The
library documentation states that it's thread-safe, but what about
several forked apache processes running different (sub-)interpreters,
logging to the same file? 

Other suggestions for logging (I really don't need most of logging.*'s
facilities) are also welcome.

Thanks,
Daniel

-- 
For mail replies please use my address from 
http://perplex.schmumpf.de/
http://www.gametective.de/


From lsumnler at uniqueinsuranceco.com  Mon May 30 08:11:22 2005
From: lsumnler at uniqueinsuranceco.com (LenS)
Date: 30 May 2005 05:11:22 -0700
Subject: Newbie learning OOP
In-Reply-To: <BPqdnWZMI59AfgTfRVn-pA@comcast.com>
References: <1117374143.284962.3080@z14g2000cwz.googlegroups.com>
	<BPqdnWZMI59AfgTfRVn-pA@comcast.com>
Message-ID: <1117455082.337189.283200@g49g2000cwa.googlegroups.com>

Thanks for the reply.  I will be looking over you code.  I'm trying to
learn OOP.  It just hasn't sunk in yet;-\



From andy at andybak.net  Mon May  2 14:44:05 2005
From: andy at andybak.net (andy at andybak.net)
Date: 2 May 2005 11:44:05 -0700
Subject: Quick and dirty dialogs?
Message-ID: <1115059445.673382.218000@g14g2000cwa.googlegroups.com>

What's the easiest way for a script to throw up simple dialogs such as
file select and alerts?

I thought there was something in the standard library that didn't need
TK and was cross-platform but I can't seem to get my Google-fu working
well enough to find it.



From rrr at ronadam.com  Tue May 10 20:17:34 2005
From: rrr at ronadam.com (Ron Adam)
Date: Tue, 10 May 2005 20:17:34 -0400
Subject: Python Graphing Utilities.
In-Reply-To: <-dadnS0X7IVccR3fRVn-uQ@entouch.net>
References: <-dadnS0X7IVccR3fRVn-uQ@entouch.net>
Message-ID: <42814F1E.70303@ronadam.com>

Kenneth Miller wrote:

> Hello All,
> 
>     I am new to Python and i was wondering what graphing utlities would be
> available to me. I have already tried BLT and after weeks of unsuccesful
> installs i'd like to find something else. Anything someone would recommend?
> 
> Regards,
> Ken


BLT doesn't install in the correct directories on Windows. I found this 
helpful.

    1.  Install BLT 2.4u into C:/Python23/tcl, using BLT's installer 
(the one for Tcl/Tk 8.3). This gives you bin, include, and lib 
subdirectories of C:/Python23/tcl, with all the BLT stuff in them.
    2. Copy C:/Python23/tcl/lib/blt2.4 into C:/Python23/tcl/tcl8.3.
    3. Put the BLT DLLs in a directory on your PATH (not necessarily a 
system directory, it just has to be on your PATH)

Clipped from: http://heim.ifi.uio.no/~hpl/scripting/software.html


Cheers,
_Ron









From Florian.Lindner at xgm.de  Wed May 11 07:20:26 2005
From: Florian.Lindner at xgm.de (Florian Lindner)
Date: Wed, 11 May 2005 13:20:26 +0200
Subject: Problems with csv module
References: <d5sngn$l4$03$1@news.t-online.com>
	<mailman.338.1115809896.29826.python-list@python.org>
Message-ID: <d5spph$ktm$01$1@news.t-online.com>

Richie Hindle wrote:

> 
> [Florian]
>> I've one problem using the csv module.
>> The code:
>> 
>>         self.reader = csv.reader(f, delimiter = ",")
>> 
>> works perfectly. But when I use a variable for delimiter:
>> 
>>         self.reader = csv.reader(f, delimiter = Adelimiter)
>> 
>> I get the traceback:
>> 
>> 
>> File "/home/florian/visualizer/ConfigReader.py", line 13, in __init__
>>     self.reader = csv.reader(f, delimiter = Adelimiter)
>> TypeError: bad argument type for built-in operation
> 
> Is this your problem?:
> 
>>>> Adelimiter = u','
>>>> reader = csv.reader(f, delimiter=Adelimiter)
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
> TypeError: bad argument type for built-in operation
>>>> print type(Adelimiter)
> <type 'unicode'>

Yes, thats my problem.

You mean that csv.reader can't work with unicode as the delimiter parameter?
Sorry, I don't really get your point what you're saying...

Florian


From fabio.pliger at siavr.it  Mon May  2 18:19:47 2005
From: fabio.pliger at siavr.it (Fabio Pliger)
Date: Mon, 02 May 2005 22:19:47 GMT
Subject: Libraries for creating graphs
References: <d565or$t9n$04$1@news.t-online.com>
Message-ID: <7Ixde.96460$zZ1.2727904@twister1.libero.it>


"Florian Lindner" <Florian.Lindner at xgm.de> ha scritto nel messaggio
news:d565or$t9n$04$1 at news.t-online.com...
> Hello,
> I'm looking for libraries to create graphs. I'm not talking about plotting
a
> function like f(x)=x^2 just plotting a couple of values into a short,
maybe
> interpolating them. Output should be something like JPEG.
>
> Thx,
>
> Florian

There lots of libraries tha do what u r searching... Seach them on google:

matplotlib
chaco
scipy.plt
gnplot

they all are great, it depends on what you are planning to do. For my last
prject i used  chaco that has some really great features... but the project
is not very active and you have to learn a lot by yourself...

F.P.





From combinational.logic at soc-ip.com  Fri May 27 17:14:19 2005
From: combinational.logic at soc-ip.com (combinational.logic $ soc-ip.com)
Date: 27 May 2005 14:14:19 -0700
Subject: Python/Excel AddIn (was:Re: Does Python have a Template::Extract
	equivalent from Perl's CPAN)
In-Reply-To: <mailman.195.1117216888.18027.python-list@python.org>
References: <1117215841.123847.234300@o13g2000cwo.googlegroups.com>
	<1117216401.626017.218080@g49g2000cwa.googlegroups.com>
	<mailman.195.1117216888.18027.python-list@python.org>
Message-ID: <1117228459.243806.272670@z14g2000cwz.googlegroups.com>

Thanks Paul!  When I get a chance I'll mess around with Py + Excel as
you have suggested .  I was hoping not to have to deal with VBScript :)



From fredrik at pythonware.com  Tue May 10 05:54:59 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Tue, 10 May 2005 11:54:59 +0200
Subject: Unique Elements in a List
References: <1115676903.432187.294910@z14g2000cwz.googlegroups.com>	<7xbr7jq3gb.fsf@ruckus.brouhaha.com><mailman.256.1115710148.29826.python-list@python.org>
	<42806991$0$274$edfadb0f@dread12.news.tele.dk>
Message-ID: <d5pvvl$l8$1@sea.gmane.org>

Max M wrote:

>> depending on the data, it might be more efficient to store the
>> "last seen index" in a dictionary, and sort the result on the way
>> out (if necessary).  something like
>
> form sets import Set
>
> data = list(Set([0.1,0.5,0.6,0.4,0.1,0.5,0.6,0.9]))

read the OP's spec again.

</F> 





From rkern at ucsd.edu  Sat May 14 15:33:37 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Sat, 14 May 2005 12:33:37 -0700
Subject: A new to Python question
In-Reply-To: <1116094967.991001.306340@g14g2000cwa.googlegroups.com>
References: <1116088663.428932.130860@g43g2000cwa.googlegroups.com>	<1116092670.420301.196570@o13g2000cwo.googlegroups.com>
	<1116094967.991001.306340@g14g2000cwa.googlegroups.com>
Message-ID: <d65jq9$vie$1@sea.gmane.org>

David wrote:
> Thank you very much.  Tulpes are really neat now that I've looked at
> them.  So after just fixing it, I changed it up and I would like to
> show it off now.
> 
> #! /usr/bin/python
> #This program takes two vectors and multiplies them
> #against a 10X10 array.  It also then gives the dot product,
> #sum, and max value of the array.
> 
> import Numeric
> def abc(package):
>     """Takes two arrays and performs predetermined calculations,
>        Then returns the solutions back as the same array, along
>        with the dot product, sum, and max value of the array.
> 
>        Data slots:
>            0 - First Array
>            1 - Second Array
>            2 - Dot product
>            3 - Sum
>            4 - Max Value"""
>     f = Numeric.zeros((10,10))
>     for i in range(10):
>         for j in range(10):
>             f[i,j] = (i+1)+(j+1)
> 
>     e = Numeric.matrixmultiply(f, package[0])
>     g = Numeric.matrixmultiply(Numeric.transpose(f),package[1])
>     package[0] = e
>     package[1] = g
>     package[2] = Numeric.dot(package[0],package[1])
>     package[3] = Numeric.sum(package[0])
>     package[4] = package[1][Numeric.argmax(package[1])]
>     return package
> 
> data = [Numeric.arange(1,11),Numeric.arange(1,11)*2,0,0,0]
> #data = [Array X, Array Y, Dot product, Sum, Max Value]
> 
> print 'Array X:',data[0]
> print 'Array Y:',data[1]
> 
> data = abc(data)
> 
> print 'Calling function abc'
> print 'Array X:',data[0]
> print 'Array Y:',data[1]
> print 'Dot Product of X and Y:',data[2]
> print 'Sum of array X:',data[3]
> print 'Max value of array Y:',data[4]
> 
> I think its just wonderful now, but if you got any other suggestions,
> Please do tell.  Thanks everyone.

It's still not very Pythonic. Don't bother putting outputs in the 
argument list. There are some good use cases for doing so, but until 
you've been writing Python code for a while and the Pythonic idioms come 
naturally to you, you should probably resist the urge. Python is not 
Fortran.

def abc(x, y):
    ...
    e = Numeric.matrixmultiply(f, x)
    g = Numeric.matrixmultiply(Numeric.transpose(f), y)
    dotp = Numeric.dot(x, y)
    sumx = Numeric.sum(x)
    maxy = Numeric.maximum.reduce(y)
    return e, g, dotp, sumx, maxy

x = Numeric.arange(1,11)
y = x*2

x, y, dotp, sumx, maxy = abc(x, y)

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From bpeng at rice.edu  Wed May  4 00:10:42 2005
From: bpeng at rice.edu (Bo Peng)
Date: Tue, 03 May 2005 23:10:42 -0500
Subject: control precision for str(obj) output?
In-Reply-To: <1115174726.753836.303790@z14g2000cwz.googlegroups.com>
References: <d598rq$8fj$1@joe.rice.edu>
	<1115174726.753836.303790@z14g2000cwz.googlegroups.com>
Message-ID: <d59i02$f22$1@joe.rice.edu>

> The unfortunate side effect of this is to make str(list of floats)
> ugly, but...

Yeah, Nothing is perfect. I can control the damage as long as I know 
what is going on. I guess this would fit in a faq list quite well.

I would have to thank Mike and Dan for your quick and detailed reply. As 
a matter of fact, this python list is the most friendly mailinglist I 
have ever joined. Thanks!

Bo


From pgmoscatt at optushome.com.au  Thu May 12 03:46:24 2005
From: pgmoscatt at optushome.com.au (Peter Moscatt)
Date: Thu, 12 May 2005 17:46:24 +1000
Subject: Using TCL files in Python ?
References: <pan.2005.05.11.09.15.00.27816@optushome.com.au>
	<mailman.343.1115814134.29826.python-list@python.org>
Message-ID: <pan.2005.05.12.07.46.23.119002@optushome.com.au>

Many thanks to all who have helped me out on this one - much appreciated.

Pete



On Wed, 11 May 2005 07:22:09 -0500, Jeff Epler wrote:

> While I've never used it, there *is* a Tix module in Python which
> appears to wrap the widgets provided by Tix.  In Fedora Core 2, Python
> doesn't seem to be configured to use Tix OOTB but a one-liner (that
> should be harmless elsewhere) does make it work.
> 
> These classes are defined in the Tix module:
> ['Shell', 'Meter', 'TixSubWidget', 'ExFileSelectDialog',
> 'NoteBookFrame', 'DirSelectDialog', 'Control', 'LabelEntry',
> 'ButtonBox', 'ScrolledTList', 'Select', 'HList', 'Balloon', 'PopupMenu',
> 'DirSelectBox', 'ComboBox', 'ScrolledWindow', 'Grid', 'CheckList',
> 'DialogShell', 'Tree', 'DirList', 'ResizeHandle', 'NoteBook',
> 'ListNoteBook', 'ScrolledGrid', 'FileEntry', 'ScrolledHList', 'DirTree',
> 'OptionMenu', 'ScrolledText', 'LabelFrame', 'FileSelectBox',
> 'ScrolledListBox', 'InputOnly', 'PanedWindow', 'StdButtonBox',
> 'FileSelectDialog', 'CObjView', 'ExFileSelectBox', 'TList']
> 
> Here's what I did to get a simple Tix widget to work:
>>>> import Tkinter, Tix
>>>> t = Tkinter.Tk()
>>>> t.tk.call("package", "require", "Tix")
> '8.1.8.4'
>>>> u = Tix.ComboBox(t)
>>>> for i in range(30): u.insert("end", "Item %d" % i)
> ... 
>>>> u.pack()
> 
> Jeff



From jjl at pobox.com  Sun May  8 09:46:22 2005
From: jjl at pobox.com (John J. Lee)
Date: 08 May 2005 13:46:22 +0000
Subject: Q: The `print' statement over Unicode
References: <mailman.6.1115221576.29826.python-list@python.org>
	<acnbm18i.fsf@python.net>
	<mailman.135.1115467276.29826.python-list@python.org>
	<427cc8b2$0$26179$9b622d9e@news.freenet.de>
	<mailman.146.1115482306.29826.python-list@python.org>
	<pan.2005.05.07.15.14.07.969179@jerf.org>
Message-ID: <87r7ghg79t.fsf@pobox.com>

Jeremy Bowers <jerf at jerf.org> writes:

> On Sat, 07 May 2005 12:10:46 -0400, Fran?ois Pinard wrote:
> 
> > [Martin von L?wis]
> > 
> >> Fran?ois Pinard wrote:
> >>
> >> > Am I looking in the wrong places, or else, should not the standard
> >> > documentation more handily explain such things?
> > 
> >> It should, but, alas, it doesn't. Contributions are welcome.
> > 
> > My contributions are not that welcome.  If they were, the core team
> > would not try forcing me into using robots and bug trackers! :-)
> 
> I'm not sure that the smiley completely de-fangs this comment.
> Have you every tried managing a project even a tenth the size of Python
> *without* those tools? If you had any idea of the kind of continuous
[...]

I don't mean to put words into Fran?ois' mouth, but IIRC he managed,
for example, GNU tar for some time and, while using some kind of
tracking system "under the covers", didn't impose it on his users.

IMVHO, that was very nice of him, but I'd be reluctant to attempt to
enforce this way of working on a hard-working and competent
contributor to an open source project to which I'm not a core
contributor myself.


John


From jeffelkins at earthlink.net  Wed May 11 23:11:57 2005
From: jeffelkins at earthlink.net (jeff elkins)
Date: Thu, 12 May 2005 03:11:57 +0000
Subject: HELP Printing with wxPython
In-Reply-To: <86ll6lkpo3.fsf@guru.mired.org>
References: <d5t4oj$sct$1@carabinieri.cs.interbusiness.it>
	<mailman.357.1115820240.29826.python-list@python.org>
	<86ll6lkpo3.fsf@guru.mired.org>
Message-ID: <200505120311.57386.jeffelkins@earthlink.net>

On Thursday 12 May 2005 04:56 am, Mike Meyer wrote:
> James Carroll <mrmaple at gmail.com> writes:
> > If you are doing this just for yourself, and you know you have a
> > printer that will really print just the plain text when you send it
> > plain text (like a dot matrix printer from the early 90s) then you can
> > probably open the printer device  and send it text.  Under windows you
> > can try opening LPT1  or on unix it's probably /dev/lpr or something
> > like that.
>
> Under Unix, you shouldn't be able to open the line printer, whether
> it's /dev/lpr or /dev/lpt0 or whater. You shouldn't have
> permission.
>
> Instead, as was suggested earlier, use the "lpr" command and send it
> the text/data on standard input. Any reasonably managed Unix system
> should be able to handle a fair range of graphics formats, though
> postscript is preferred.
>
>         <mike
> --
> Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
> Independent WWW/Perforce/FreeBSD/Unix consultant, email for more
> information.

I've been using:

p=os.popen('lp','w')        
p.write("some text')
p.Close()


Jeff
   


From skip at pobox.com  Mon May  2 22:58:46 2005
From: skip at pobox.com (Skip Montanaro)
Date: Mon, 2 May 2005 21:58:46 -0500
Subject: urllib2 and timeout question
In-Reply-To: <l1uc7197m6pp0o6bhjvml3pa8308pgv2m9@4ax.com>
References: <l1uc7197m6pp0o6bhjvml3pa8308pgv2m9@4ax.com>
Message-ID: <17014.59622.614967.967892@montanaro.dyndns.org>

    Gerard> Code below:

Order might be important (though hopefully not).  Can you give this a try?

    import time
    import socket
    socket.setdefaulttimeout(300)
    import urllib2

    ...

Skip


From me at privacy.net  Thu May 12 16:16:48 2005
From: me at privacy.net (Dan Sommers)
Date: 12 May 2005 16:16:48 -0400
Subject: Python Polymorphism
References: <mailman.495.1115928047.29826.python-list@python.org>
Message-ID: <m2wtq4xkr3.fsf@unique.fully.qualified.domain.name.yeah.right>

On Thu, 12 May 2005 13:00:45 -0700 (PDT),
Carlos Moreira <duduca007 at yahoo.com> wrote:

> Look, I don't want to use things like:

> ....
>       def myMethod(self, myValue=None):
>            if(not myValue):
>                 self.myAttribute += 1
>            else:
>                 self.myAttribute += myValue
> ....

How about:

    def myMethod( self, myValue = 1 ):
        self.myAttribute += myValue

Callers of myMethod look exactly like they would look if you had written
two methods:

    a.myMethod( ) # add 1 to a.myAttribute
    a.myMethod( 22 ) # add 22 to a.myAttribute

> I want to use the power of polymorphism to modelate the problem.

Polymorphism in Python is a solution looking for a problem.

Regards,
Dan

-- 
Dan Sommers
<http://www.tombstonezero.net/dan/>


From python-url at phaseit.net  Mon May  9 14:08:03 2005
From: python-url at phaseit.net (Simon Brunning)
Date: Mon, 09 May 2005 18:08:03 GMT
Subject: Dr. Dobb's Python-URL! - weekly Python news and links (May  9)
Message-ID: <d5o65i$ran$1@lairds.us>

QOTW: "It's not perfect, but then nobody in this thread has offered
anything even remotely resembling perfect documentation for regular
expressions yet. <wink>" - Peter Hansen

"Python's flavor of OO is perfectly valid and usable, even though it
doesn't follow the Java Holy Bible of Object Orientation (gasp!)" - Hans Nowak

"It's highly arguable if Python is "better" than C#, but from a
control-your-own-destiny angle, Python is a complete slam dunk. Python
works well on *nix, Java, .NET and Mac OS X. It's open source. It's
sane. But I won't argue it's fast. It's usually just not so slow you
care." - Jonathan Rentzsch

        
    String Manipulation in Python:
        http://www.devshed.com/c/a/Python/String-Manipulation/
        
    Why you can't detect a float's significant digits:
        http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/85eaac30c01b51a5
    
    Dependency Injection The Python Way:
        http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/413268
        
    What is Paste?
        http://blog.ianbicking.org/what-is-paste.html
        
    Finding peaks and valleys:
        http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/6506673a689339b7
        
    Type-safe Enums in Python:
        http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/413486
        
    Python turns up again in a Microsoft outpost:
        http://www.informit.com/guides/content.asp?g=windowsserver&seqNum=183&rl=1

    Encryption with Python:
        http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/5fb9ffada975bae9

    The importance of being selfish, deja vu:
        http://zephyrfalcon.org/weblog2/arch_e10_00770.html#e776
        
    Notable releases:
        CherryPy-2.0-final:
            http://groups-beta.google.com/group/comp.lang.python.announce/browse_thread/thread/8905b9f2bd114f38
        BeautifulSoup 2.1.0:
            http://www.crummy.com/software/BeautifulSoup/
        KirbyBase 1.8.2:
            http://www.netpromi.com/kirbybase.html


========================================================================
Everything Python-related you want is probably one or two clicks away in
these pages:

    Python.org's Python Language Website is the traditional
    center of Pythonia
        http://www.python.org
    Notice especially the master FAQ
        http://www.python.org/doc/FAQ.html

    PythonWare complements the digest you're reading with the
    marvelous daily python url
         http://www.pythonware.com/daily  
    Mygale is a news-gathering webcrawler that specializes in (new)
    World-Wide Web articles related to Python.
         http://www.awaretek.com/nowak/mygale.html 
    While cosmetically similar, Mygale and the Daily Python-URL
    are utterly different in their technologies and generally in
    their results.

    For far, FAR more Python reading than any one mind should
    absorb, much of it quite interesting, several pages index
    much of the universe of Pybloggers.
	http://lowlife.jp/cgi-bin/moin.cgi/PythonProgrammersWeblog
        http://www.planetpython.org/
        http://mechanicalcat.net/pyblagg.html

    comp.lang.python.announce announces new Python software.  Be
    sure to scan this newsgroup weekly.
        http://groups.google.com/groups?oi=djq&as_ugroup=comp.lang.python.announce

    Steve Bethard, Tim Lesher, and Tony Meyer continue the marvelous
    tradition early borne by Andrew Kuchling, Michael Hudson and Brett
    Cannon of intelligently summarizing action on the python-dev mailing
    list once every other week.
	http://www.python.org/dev/summary/

    The Python Package Index catalogues packages.
        http://www.python.org/pypi/

    The somewhat older Vaults of Parnassus ambitiously collects references
    to all sorts of Python resources.
        http://www.vex.net/~x/parnassus/   

    Much of Python's real work takes place on Special-Interest Group
    mailing lists
        http://www.python.org/sigs/

    The Python Business Forum "further[s] the interests of companies
    that base their business on ... Python."
	http://www.python-in-business.org

    Python Success Stories--from air-traffic control to on-line
    match-making--can inspire you or decision-makers to whom you're
    subject with a vision of what the language makes practical.
        http://www.pythonology.com/success

    The Python Software Foundation (PSF) has replaced the Python
    Consortium as an independent nexus of activity.  It has official
    responsibility for Python's development and maintenance. 
        http://www.python.org/psf/
    Among the ways you can support PSF is with a donation.
        http://www.python.org/psf/donate.html

    Kurt B. Kaiser publishes a weekly report on faults and patches.
        http://www.google.com/groups?as_usubject=weekly%20python%20patch
       
    Cetus collects Python hyperlinks.
        http://www.cetus-links.org/oo_python.html

    Python FAQTS
        http://python.faqts.com/

    The Cookbook is a collaborative effort to capture useful and
    interesting recipes.
	http://aspn.activestate.com/ASPN/Cookbook/Python

    Among several Python-oriented RSS/RDF feeds available are
	http://www.python.org/channews.rdf
	http://bootleg-rss.g-blog.net/pythonware_com_daily.pcgi
	http://python.de/backend.php
    For more, see
	http://www.syndic8.com/feedlist.php?ShowMatch=python&ShowStatus=all
    The old Python "To-Do List" now lives principally in a
    SourceForge reincarnation.
        http://sourceforge.net/tracker/?atid=355470&group_id=5470&func=browse
        http://python.sourceforge.net/peps/pep-0042.html
     
    The online Python Journal is posted at pythonjournal.cognizor.com.
    editor at pythonjournal.com and editor at pythonjournal.cognizor.com
    welcome submission of material that helps people's understanding
    of Python use, and offer Web presentation of your work.

    del.icio.us presents an intriguing approach to reference commentary.
    It already aggregates quite a bit of Python intelligence.
        http://del.icio.us/tag/python

    *Py: the Journal of the Python Language*
        http://www.pyzine.com

    Archive probing tricks of the trade:
        http://groups.google.com/groups?oi=djq&as_ugroup=comp.lang.python&num=100
        http://groups.google.com/groups?meta=site%3Dgroups%26group%3Dcomp.lang.python.*

Previous - (U)se the (R)esource, (L)uke! - messages are listed here:
  http://www.ddj.com/topics/pythonurl/ (requires subscription)
  http://groups-beta.google.com/groups?q=python-url+group:comp.lang.python*&start=0&scoring=d&
  http://purl.org/thecliff/python/url.html (dormant)
or
  http://groups.google.com/groups?oi=djq&as_q=+Python-URL!&as_ugroup=comp.lang.python


Suggestions/corrections for next week's posting are always welcome.
E-mail to <Python-URL at phaseit.net> should get through.

To receive a new issue of this posting in e-mail each Monday morning
(approximately), ask <claird at phaseit.net> to subscribe.  Mention
"Python-URL!".


-- The Python-URL! Team--

Dr. Dobb's Journal (http://www.ddj.com) is pleased to participate in and
sponsor the "Python-URL!" project.




From claird at lairds.us  Thu May 19 09:08:02 2005
From: claird at lairds.us (Cameron Laird)
Date: Thu, 19 May 2005 13:08:02 GMT
Subject: Is Python suitable for a huge, enterprise size app?
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>
	<d6h8o8$nm2$1@news3.zwoll1.ov.home.nl>
Message-ID: <39ful2-i0e.ln1@lairds.us>

In article <d6h8o8$nm2$1 at news3.zwoll1.ov.home.nl>,
vincent wehren <vincent at visualtrans.de> wrote:
			.
			.
			.
>If the application is really huge, you should consider using
>a set of programming languages that do the particular job best.
>That is, go for a complementary, concurrent approach in your choice
>of programming  languages. I wouldn't want to religiously stick to any
>one language just for the sake of being religious.
			.
			.
			.
How embarrassing--I've followed up twice in this thread
already, and utterly failed to mention this.  YES!  The
question should never be, "What one language is least
imperfect for our requirements?", but rather, "What
specific combination of languages best fits our
situation?"  I'll refer again to Phaseit's deliveries:
we *always* are working in multiple languages.  If we
had responsibility for the project the Original Poster
described, I suspect we'd involve Python and C++, or
Jython and Java, and of course SQL and XHTML, and ...

At this level, part of my endorsement of Python has to
do with its propensity to play nicely with others.

As others have written, though, it would be rather
... ambitious to commit tens of millions of dollars to
a language with which the organization is almost 
entirely unfamiliar.  'Course, Big Organizations do
that all the time, without realizing it ...


From trentm at ActiveState.com  Tue May 24 11:59:22 2005
From: trentm at ActiveState.com (Trent Mick)
Date: Tue, 24 May 2005 08:59:22 -0700
Subject: install python 2.4.1
In-Reply-To: <1116760610.227839.83110@o13g2000cwo.googlegroups.com>
References: <1116758705.327764.33740@g14g2000cwa.googlegroups.com>
	<d6pot2$2rd$1@news5.zwoll1.ov.home.nl>
	<1116760610.227839.83110@o13g2000cwo.googlegroups.com>
Message-ID: <20050524155921.GA2432@ActiveState.com>

[ajikoe at gmail.com wrote]
> I use win xp pro.
> I wonder about this new version of python because I use Nummeric, pyro,
>  combine with komodo and pydev ide in my python 2.4.
> If there is compatibility isue with the new version, it is better for
> me not to install the new version.

There will be no compatibility issue with Komodo, at least. Nor should
there be with the others, as Martin mentioned.

Trent

-- 
Trent Mick
TrentM at ActiveState.com


From rmm at iname.com  Wed May 11 09:45:59 2005
From: rmm at iname.com (rmm at iname.com)
Date: 11 May 2005 06:45:59 -0700
Subject: Replacing open builtin
In-Reply-To: <mailman.351.1115817322.29826.python-list@python.org>
References: <1115816164.517116.124070@g14g2000cwa.googlegroups.com>
	<mailman.351.1115817322.29826.python-list@python.org>
Message-ID: <1115819159.865288.238650@g49g2000cwa.googlegroups.com>

I had a quick look at the python source code and fileobject.c is one of
the core classes which, I would imagine, is why a reference can be
obtained.  The other classes (method, dictionaries etc) don't look so
much of a liability.  I'll maybe try disabling the fopen calls in
fileobject and see if it breaks anything (I've no need to open/close
files using the standard libraries).

Are there any other holes you can think of in the following scenario-
I disable all builtins except import which I protect in my 'Isolate'
class, I then only allow import to import a single module name.

Thanks for the speedy and informative replies.

RMM



From sjmachin at lexicon.net  Sun May 29 04:29:39 2005
From: sjmachin at lexicon.net (John Machin)
Date: Sun, 29 May 2005 18:29:39 +1000
Subject: need help of RE
In-Reply-To: <1117352350.179209.206930@z14g2000cwz.googlegroups.com>
References: <1117352350.179209.206930@z14g2000cwz.googlegroups.com>
Message-ID: <42997D73.5030400@lexicon.net>

cheng wrote:
> hi all
> a string like
> 
> "(word1 & (Word2|woRd3))"
> 
> how can i use the re to split it to
> 
> ['word1', 'word2', 'word3']
> 

OK, so you know about the re module.

Look in the manual: there's a module-level function called
"split", with an example similar to yours. Did you try that?
Let's do it now:

 >>> import re
 >>> text = "(word1 & (Word2|woRd3))".lower()
# you seem to want downshifting ...
 >>> re.split(r"\W+", text)
['', 'word1', 'word2', 'word3', '']
 >>>

Hmmm ... near, but not exactly what you want. We need to throw away 
those empty strings, which will appear if you have non-word characters 
at the ends of your text.

Two ways of doing that:

 >>> filter(None, re.split(r"\W+", text))
['word1', 'word2', 'word3']

or

 >>> [x for x in re.split(r"\W+", text) if x]
['word1', 'word2', 'word3']

Forget about "filter". Read about "list comprehensions" and "generator 
expressions" -- they are more general and powerful.

Cheers,
John



From R.Brodie at rl.ac.uk  Fri May 13 04:53:01 2005
From: R.Brodie at rl.ac.uk (Richard Brodie)
Date: Fri, 13 May 2005 09:53:01 +0100
Subject: Parsing HTML with JavaScript
References: <slrnd88pns.qsm.mtfulmer@tacobell.land>
Message-ID: <d61ptd$4c5$1@blackmamba.itd.rl.ac.uk>


<mtfulmer at tacobell.land> wrote in message news:slrnd88pns.qsm.mtfulmer at tacobell.land...

> I am trying to extract some information from a few web pages, and I was
> using the HTMLParser module. It worked fine until it got to the
> javascript, at which it gave a parse error.

It's fairly common for pages with Javascript to also be invalid HTML.
HTMLParser isn't an 'ignore all errors silently and guess what it's
meant to be' parser. Unless you have known good inputs it's often
best to use an alternative. Some options are discussed in Uche's article
here: http://www.xml.com/pub/a/2004/09/08/pyxml.html




From twic at urchin.earth.li  Sun May  8 07:50:09 2005
From: twic at urchin.earth.li (Tom Anderson)
Date: Sun, 8 May 2005 12:50:09 +0100
Subject: Curve fitting
Message-ID: <Pine.LNX.4.44.0505081237260.20692-100000@urchin.earth.li>

Hi,

I'd like to fit a curve (a rectangular hyperbola, in fact) to some data
points as part of a program i'm writing. Can anyone suggest a package
which would help me do this?

A bit of googling suggests that SciPy might be what i want. Does that
sound likely?

Thanks,
tom

-- 
OBEY GIANT



From mru at inprovide.com  Sun May  8 15:38:05 2005
From: mru at inprovide.com (=?iso-8859-1?q?M=E5ns_Rullg=E5rd?=)
Date: Sun, 08 May 2005 21:38:05 +0200
Subject: Language documentation ( was Re: Computing Industry shams)
References: <1115509201.680334.140840@f14g2000cwb.googlegroups.com>
	<874qdezh76.fsf@kafka.homenet> <1415322.AzhuxSBQdk@yahoo.com>
Message-ID: <yw1xpsw1fqzm.fsf@ford.inprovide.com>

alex goldman <hello at spamm.er> writes:

> vermicule wrote:
>
>> 
>> What is so hard to understand ?
>> Should be perfectly clear even to a first year undergraduate.
>> 
>> As for "greedy" even a minimal exposure to Djikstra's shortest path
>> algorithm would have made the concept intuitive. And from memory,
>> that is the sort of thing done in Computing 101 and in  Data Structures
>> and Algorithms 101
>> 
>> It seems to me that you want the Python doc to be written for morons.
>> And that is not a valid complaint.
>
> He's right actually. If we understand the term "greedy" as it's used in
> graph search and optimization algorithms, Python's RE matching actually IS
> greedy.

If we, more reasonably, use the meaning of "greedy" that is commonly
used when talking about regular expressions, there is nothing wrong
with the Python docs, and Xah Lee remains the troll he has always
been.

-- 
M?ns Rullg?rd
mru at inprovide.com


From aahz at pythoncraft.com  Thu May 12 00:45:38 2005
From: aahz at pythoncraft.com (Aahz)
Date: 11 May 2005 21:45:38 -0700
Subject: Python Documentation (should be better?)
References: <5C99C308457E6D4EA5448EA52A66004A675A6E@or.mxim.com>
	<d5u8mk$k6n$1@sea.gmane.org> <4282D0C5.3A8B3786@pauahtun.org>
	<mailman.425.1115869922.29826.python-list@python.org>
Message-ID: <d5un1i$lof$1@panix3.panix.com>

In article <mailman.425.1115869922.29826.python-list at python.org>,
Robert Kern  <rkern at ucsd.edu> wrote:
>
>I believe that docs.python.org was added mostly to aid Google searches. 
>I *do* think that the Documentation link should go to docs.python.org. I 
>believe there is a mailing list somewhere that discusses improvements to 
>the website.
>
><Googles> Ah:
>
>http://mail.python.org/mailman/listinfo/pydotorg/

Google gave you the wrong answer.  ;-)  pydotorg is for people actively
working on the website, not for discussions about improving the website.
There's another list for that, but it's currently moribund because we're
waiting for a website redesign.  (The PSF board voted to pay someone to
redesign www.python.org.)
-- 
Aahz (aahz at pythoncraft.com)           <*>         http://www.pythoncraft.com/

"And if that makes me an elitist...I couldn't be happier."  --JMS


From Scott.Daniels at Acm.Org  Thu May 26 15:46:50 2005
From: Scott.Daniels at Acm.Org (Scott David Daniels)
Date: Thu, 26 May 2005 12:46:50 -0700
Subject: os independent way of seeing if an executable is on the path?
In-Reply-To: <429564a4@usenet01.boi.hp.com>
References: <7e-dnaQeau8AnQvfRVn-1w@comcast.com> <429564a4@usenet01.boi.hp.com>
Message-ID: <429620ff$1@nntp0.pdx.net>

Don wrote:

> I wrote this 'which' function for Linux, but I think if you changed the ':'
> character, it would work on Windows (I think its a ';' on Windows, but I
> can't remember):
Why remember when os.pathsep will do it for you.
However, for windows you need a bit more:

def which(command):
     win32 = sys.platform == 'win32'
     if win32:
	# Case-insesitive file names and file exts for commands
	try:
             knownexts = [''] + os.getenv('PATHEXT').split(os.pathsep)
         except AttributeError:
	    knownexts = ['']
         else:
             knownexts = [ext.lower() for ext in knownexts]
         test = command.lower()
         tests = set(test + ext for ext in knownexts)
     else:
	tests = set([command])
     for dirname in os.getenv('PATH').split(os.pathsep):
         try:
             files = os.listdir(dirname)		
         except IOError:
             continue
         else:
             for name in files:
		if name in tests or win32 and name.lower() in tests:
		    yield dirname, name


--Scott David Daniels
Scott.Daniels at Acm.Org


From skip at pobox.com  Tue May 17 09:00:50 2005
From: skip at pobox.com (Skip Montanaro)
Date: Tue, 17 May 2005 08:00:50 -0500
Subject: Python forum
In-Reply-To: <4289E7D2.80303@acm.org>
References: <4289B462.10804@softhome.net>
        <4289E7D2.80303@acm.org>
Message-ID: <17033.60162.412060.528218@montanaro.dyndns.org>


    Brett> Don't forget that there's also the Tutor list (see
    Brett> http://www.python.org/mailman/listinfo/tutor ), targeted to
    Brett> people looking to learn the language...

I wonder if there's a way to gateway the tutor list to the
python-forum.org forum, probably to the beginner's forum.

Skip



From greg at cosc.canterbury.ac.nz  Thu May 12 00:04:59 2005
From: greg at cosc.canterbury.ac.nz (Greg Ewing)
Date: Thu, 12 May 2005 16:04:59 +1200
Subject: pyvm -- faster python
In-Reply-To: <7x1x8el18e.fsf@ruckus.brouhaha.com>
References: <mailman.164.1115548611.29826.python-list@python.org>
	<1115561483.741761.212140@f14g2000cwb.googlegroups.com>
	<m102l2-9qr.ln1@home.rogerbinns.com>
	<mailman.264.1115716603.29826.python-list@python.org>
	<vu38l2-k5v.ln1@home.rogerbinns.com>
	<7xvf5qbir1.fsf@ruckus.brouhaha.com>
	<nt98l2-1e.ln1@home.rogerbinns.com>
	<7xpsvymlse.fsf@ruckus.brouhaha.com>
	<1115791624.856252.247890@z14g2000cwz.googlegroups.com>
	<7x1x8el18e.fsf@ruckus.brouhaha.com>
Message-ID: <3eg2vnF2psplU1@individual.net>

Paul Rubin wrote:
> PyPy looks like the best vehicle for that so far.  See
> 
>    http://catb.org/~esr/jargon/html/M/MFTL.html
> 
> for the canonical remark about languages that can't be used to
> implement their own compilers.

Which makes it clear that the remark is only intended
to apply to *compiled* languages.

-- 
Greg Ewing, Computer Science Dept,
University of Canterbury,	
Christchurch, New Zealand
http://www.cosc.canterbury.ac.nz/~greg


From nothingcanfulfill at gmail.com  Tue May 17 18:18:10 2005
From: nothingcanfulfill at gmail.com (ncf)
Date: 17 May 2005 15:18:10 -0700
Subject: command to update a web page
In-Reply-To: <1116364404.542712.273200@g44g2000cwa.googlegroups.com>
References: <1116364404.542712.273200@g44g2000cwa.googlegroups.com>
Message-ID: <1116368290.299045.175160@g44g2000cwa.googlegroups.com>

I can't begin to know too much about this subject, but Python has a
builtin httplib module which might be interesting to you. There is also
a ftplib if that is how you want to do it. Python's documentation seems
to have adequate examples on how to use the two modules.

-Wes



From flupke at nonexistingdomain.com  Thu May 26 03:08:49 2005
From: flupke at nonexistingdomain.com (flupke)
Date: Thu, 26 May 2005 07:08:49 GMT
Subject: Checking for a full house
In-Reply-To: <7x8y22v76i.fsf@ruckus.brouhaha.com>
References: <1117071824.882035.250710@g49g2000cwa.googlegroups.com>
	<1117085950.739186.14240@z14g2000cwz.googlegroups.com>
	<1117086974.854184.5930@g43g2000cwa.googlegroups.com>
	<7x8y22v76i.fsf@ruckus.brouhaha.com>
Message-ID: <5Cele.101369$Sd5.6145133@phobos.telenet-ops.be>

Paul Rubin wrote:
> "Raymond Hettinger" <python at rcn.com> writes:
> 
>>Your use case for gathering roll statistics probably needs a more
>>general solution:
>>
>>hands = {
>>    (1,1,1,1,1): 'nothing',
>>    (1,1,1,2): 'one pair',
>>    (1,2,2): 'two pair',
>>    (1,1,3): 'three of a kind',
>>    (2,3): 'full house',
>>    (1,4): 'four of a kind',
>>    (5): 'flush (five of a kind)'
>>}
>>
>>def eval_hand(hand):
>>    counts = tuple(sorted(hand.count(card) for card in set(hand)))
>>    return hands.get(counts, 'misdeal')
> 
> 
> 1. "Flush" means 5 cards of the same suit (i.e. all hearts), not 5 of
>    a kind.
> 
> 2. That code doesn't detect flushes or straights.

It would be interesting to see how complicated it would get to write 
code to detect the correct hands in poker with wildcards included.
I tried that a year or 2 ago when i wanted to write a pokergame in java 
but i failed miserably in doing so.

I have a gut feeling that with python this is easier. I might give it 
another go. Is there any of such code available somewhere?
The reason i wanted to do so is that there isn't a game that allows a 
player to specify it's own games. I wanted to make a simple network 
enabled game with simple graphics and scriptable poker games via a wizard.
But as i said, i first wanted to construct my "card" code to deal, 
evaluate a hand and compare 2 or more hands, and to find the highest 
hand in a number of hands. And all this with wildcards, cards in the 
hands varying from 5 to 7 and high low. I toyed with on several 
occasions but never could seem to find an easy way to do it.

Benedict


From nothingcanfulfill at gmail.com  Tue May 17 19:07:52 2005
From: nothingcanfulfill at gmail.com (ncf)
Date: 17 May 2005 16:07:52 -0700
Subject: "End Of Line" Confusion
Message-ID: <1116370499.324399.8920@z14g2000cwz.googlegroups.com>

I'm having an odd problem. I'm getting an error from IDLE saying "End
Of Line detected while scanning single-quoted string." Odd thing is,
it's not single-quoted, it's one of the doc-strings (if that's what you
call them).

In the following code (class name replaced with <<<NAME>>>), the error
is being highlighted as the hyphen joining "non" and "ASCII".

class <<<NAME>>>:
    <<<CUT>>>
    def digest():
        ''' char[28] digest ( )

        Return the digest of the strings passed to the update() method
so far.
        This is a 28-byte string which may contain non-ASCII
characters,
        including null bytes.
        '''
        raise NotImplementedError, 'digest() is not yet implemented.'


Thanks in advance. -Wes



From max2 at fisso.casa  Thu May  5 12:31:10 2005
From: max2 at fisso.casa (max(01)*)
Date: Thu, 05 May 2005 16:31:10 GMT
Subject: python and glut
In-Reply-To: <86k6me7svh.fsf@guru.mired.org>
References: <kp7ee.1331058$35.49670814@news4.tin.it>
	<86k6me7svh.fsf@guru.mired.org>
Message-ID: <iTree.861149$b5.38139968@news3.tin.it>

Mike Meyer wrote:
> "max(01)*" <max2 at fisso.casa> writes:
> 
> 
>>$ python GLE.py
>>freeglut (GLE.py): OpenGL GLX extension not supported by display ':0.0'
>>
>>what's up? what's missing?
> 
> 
> The GLX extension to your X server.
> 
> 
>>i use a standard debian installation.
> 
> 
> I don't know which X debian uses, and it may have changed over time,

mine uses XFree86, Version 4.3.0.1 (from the man page)

> so you'll want to specify the name of the distribution.

woody.

thanks

max


From fumanchu at amor.org  Sun May  8 21:11:57 2005
From: fumanchu at amor.org (Robert Brewer)
Date: Sun, 8 May 2005 18:11:57 -0700
Subject: how to calc the difference between two datetimes?
Message-ID: <3A81C87DC164034AA4E2DDFE11D258E3771FC8@exchange.hqamor.amorhq.net>

Stewart Midwinter wrote:
> After an hour of research, I'm more confused than ever. I don't know
> if I should use the time module, or the eGenix datetime module. Here's
> what I want to do:  I want to calculate the time difference (in
> seconds would be okay, or minutes), between two date-time strings.
> 
> so: something like this:
> time0 = "2005-05-06 23:03:44"
> time1 = "2005-05-07 03:03:44"
> 
> timedelta = someFunction(time0,time1)
> print 'time difference is %s seconds' % timedelta.
> 
> Which function should I use?

Use datetime.datetime objects and subtract one from the other:
http://docs.python.org/lib/datetime-datetime.html

import datetime
time0 = datetime.datetime(2005, 5, 6, 23, 3, 44)
time1 = datetime.datetime(2005, 5, 7, 3, 3, 44)

td = time1 - time0
print 'time difference is %s seconds' % td


The "td" object will be a datetime.timedelta object.


Robert Brewer
MIS
Amor Ministries
fumanchu at amor.org


From steve at holdenweb.com  Sun May  1 18:40:36 2005
From: steve at holdenweb.com (Steve Holden)
Date: Sun, 01 May 2005 18:40:36 -0400
Subject: sys.stdout question
In-Reply-To: <1114985939.702426.114490@f14g2000cwb.googlegroups.com>
References: <1114985939.702426.114490@f14g2000cwb.googlegroups.com>
Message-ID: <d53lhd$1ep$1@sea.gmane.org>

chris patton wrote:
>>>>import sys
>>>>class stuff:
> 
> ...       things = []
> ...       def write(self, string):
> ...               self.things.append(string)
> ...
> 
>>>>def_stdout = sys.stdout
>>>>sys.stdout = stuff()
>>>>print 'this is a string.'
>>>>print 'This is another string.'
>>>>sys.stdout = def_stdout
>>>>print stuff.things
> 
> ['This is a string.', '\n', 'This is another string.', '\n']
> 
> Where are the newline characters coming from?
> 
The print statement automatically inserts a newline at the end of its 
output unless the statement ends in a comma. It also puts a space 
between the comma-separated items.

regards
  Steve
-- 
Steve Holden        +1 703 861 4237  +1 800 494 3119
Holden Web LLC             http://www.holdenweb.com/
Python Web Programming  http://pydish.holdenweb.com/



From martin.witte at gmail.com  Sun May  1 17:22:27 2005
From: martin.witte at gmail.com (wittempj@hotmail.com)
Date: 1 May 2005 14:22:27 -0700
Subject: Writing to log file when script is killed
In-Reply-To: <mailman.66.1114885702.14961.python-list@python.org>
References: <1114851873.072376.225820@z14g2000cwz.googlegroups.com>
	<1114864012.637007.295800@z14g2000cwz.googlegroups.com>
	<mailman.66.1114885702.14961.python-list@python.org>
Message-ID: <1114982547.096114.223350@z14g2000cwz.googlegroups.com>

Ok, I was sloppy - I meant the regular kill, not the -9 version...



From philippe at philippecmartin.com  Wed May  4 09:39:06 2005
From: philippe at philippecmartin.com (Philippe C. Martin)
Date: Wed, 04 May 2005 13:39:06 GMT
Subject: tkinter and threads
References: <4278ba5e$1@news.bezeqint.net>
Message-ID: <_f4ee.1031$7U.897@newssvr30.news.prodigy.com>

I might be wrong, but my experience is to keep all tkinter calls in the main
thread and use queues to have other threads tell the main one what to do.

Regards,

Philippe



Nir Aides wrote:

> Hello,
> 
> In Tkinter, is it safe to call widget.after(time, callback) from another
> thread (other than the gui thread)?
> 
> Thanks,
> Nir



From luis_lupe2XXX at netvisaoXXX.pt  Tue May 24 10:47:40 2005
From: luis_lupe2XXX at netvisaoXXX.pt (Luis P. Mendes)
Date: Tue, 24 May 2005 15:47:40 +0100
Subject: Pyrex:  TypeError: unsubscriptable object
Message-ID: <3fgt3jF7d8ftU1@individual.net>

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Hi,

I'm just transforming a Python module into Pyrex, and I get the
following error:
File "indicadorPyrex.pyx", line 37, in indicadorPyrex.volatilidade
~    h1 = precoMax[barra]

I made no changes to this module except including 'int' for two
variables in the def argument of the function.

I also tried to declare cdef float h1, but I get the same error.

What can be wrong?

Thanks,

Luis
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.4 (GNU/Linux)
Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org

iD8DBQFCkz6MHn4UHCY8rB8RAlTZAJ0ZXfdmkZuXFLPrhGvaYUBoS7YTVQCZAZhp
Fc65UgWF+rCkilTs0BAmNSU=
=PZpG
-----END PGP SIGNATURE-----


From jjl at pobox.com  Tue May 17 16:39:11 2005
From: jjl at pobox.com (John J Lee)
Date: Tue, 17 May 2005 20:39:11 +0000 (UTC)
Subject: Python forum
In-Reply-To: <17034.20153.201703.465946@montanaro.dyndns.org>
References: <mailman.84.1116320178.8733.python-list@python.org>       
	<87k6lxk51a.fsf@pobox.com>
	<17034.20153.201703.465946@montanaro.dyndns.org>
Message-ID: <Pine.LNX.4.58.0505172038490.6473@alice>

On Tue, 17 May 2005, Skip Montanaro wrote:

> 
>     John> Web forums do reach a different audience.  Maybe python.org should
>     John> have a 'web forum' link to gmane.org's web interface for c.l.py?
> 
> Any idea if the gmane folks could be convinced to move
> gmane.comp.python.general to gmane.comp.lang.python so it's with the rest of
> the programming languages?

No idea...


John


From bgs248 at hotmail.com  Wed May 18 21:33:51 2005
From: bgs248 at hotmail.com (bgs)
Date: 18 May 2005 18:33:51 -0700
Subject: Help on slow attribute copy
References: <mailman.171.1116453597.8733.python-list@python.org>
	<1116457391.943711.304790@g44g2000cwa.googlegroups.com>
	<mailman.178.1116459742.8733.python-list@python.org>
Message-ID: <1116466431.390000.308010@g44g2000cwa.googlegroups.com>

Hmm, it looks like the dot operator has been overloaded to do something
complicated.  (although if you haven't already, try "for i in nodes:
pass" just to make sure).  Is it retrieving the data from the network
somewhere?  If so, then it looks like it is probably retrieving each
coordinate individually on each iteration of the loop.  Perhaps there
is some way of retrieving them all in one bunch?

It's difficult to say more without knowing anything about abaqus and
its interface.



From duncan.booth at invalid.invalid  Mon May  9 09:52:40 2005
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 9 May 2005 13:52:40 GMT
Subject: replace string patern with different value
References: <1115645021.903836.262590@z14g2000cwz.googlegroups.com>
Message-ID: <Xns96519614E308Cduncanbooth@127.0.0.1>

ajikoe at gmail.com wrote:

> I would like to replace string with different values,
> For example :
> source = 'kode1 bla bla kode1 bla kode1'
> I have a list with each member will replace each of kode1.
> L = [11,22,33]
> So the new source will become:
> newsource = '11 bla bla 22 bla 33'
> 
> How can I do it ? I tried to find using string built in function
> replace, but it will replace pattern with the same value.
> 

>>> source = 'kode1 bla bla kode1 bla kode1'
>>> L = [11,22,33]
>>> re.sub('kode1', (lambda m: str(L.pop(0))), source)
'11 bla bla 22 bla 33'


From stewart.midwinter at gmail.com  Sun May  8 23:19:36 2005
From: stewart.midwinter at gmail.com (Stewart Midwinter)
Date: Sun, 8 May 2005 21:19:36 -0600
Subject: how to calc the difference between two datetimes?
In-Reply-To: <3A81C87DC164034AA4E2DDFE11D258E3771FC8@exchange.hqamor.amorhq.net>
References: <3A81C87DC164034AA4E2DDFE11D258E3771FC8@exchange.hqamor.amorhq.net>
Message-ID: <d4c0d4800505082019a887fe6@mail.gmail.com>

thanks Robert, those 4 lines of code sure beat the 58 of my
home-rolled time-date function!

cheers
S


From justin.mailinglists at gmail.com  Wed May 18 03:12:23 2005
From: justin.mailinglists at gmail.com (Justin Ezequiel)
Date: Wed, 18 May 2005 15:12:23 +0800
Subject: Tiny RML2PDF re rml_1_0.dtd download
Message-ID: <3c6718980505180012701a7fb2@mail.gmail.com>

Can somebody please give me a URL to where I can download the DTD?
I've Googled and browsed all through http://openreport.org/ with no success.

I've subscribed to the OpenReport mailing list but messages I send to
openreport-list at openreport.org
bounce back with an unknown user: "openreport-list"

BTW, anyone here using Tiny RML2PDF? Any comments?

Thank you.


From shanna_perkins_02 at hotmail.com  Mon May 30 02:50:44 2005
From: shanna_perkins_02 at hotmail.com (lostinpython)
Date: 29 May 2005 23:50:44 -0700
Subject: prime number
In-Reply-To: <86wtphtm3f.fsf@guru.mired.org>
References: <1117421732.677244.237730@g49g2000cwa.googlegroups.com>
	<86wtphtm3f.fsf@guru.mired.org>
Message-ID: <1117435844.389867.193900@g49g2000cwa.googlegroups.com>

It is a homework assignment from a book but not for a class.  I'm
trying to teach my self some basic programming before I have to take it
in college.  If I show enough understanding of the subject, my advisor
will let me forgo Intro. to Programming and go into Intro. to C++.
What civil engineers need with all this programming is beyond me.  We
have to learn another language to program our CADD software, which I
find much easier than this.  But needless to say, I'm stumped on this
problem.  I keep ending up in a never ending loop.

Shanna

Mike Meyer wrote:
> "lostinpython" <shanna_perkins_02 at hotmail.com> writes:
> > I'm having trouble writing a program that figures out a prime number.
> > Does anyone have an idea on how to write it?  All I know is that n > 2
> > is prim if no number between 2 and sqrt of n (inclusivly) evenly
> > divides n.
>
> How about this (untested):
>
> import sys
> import subprocess
>
> primes = subprocess.Popen(["primes", sys.argv[1], sys.argv[1]],
>                         stdout=subprocess.PIPE).stdout.readlines()
> if primes:
>    print sys.argv[1], "prime"
> else:
>    print sys.argv[1], "not prime"
>
> Seriously, this sounds like a homework assignment. Google for "sieve
> of eratosthenes". The BSD "primes" program I used in the above is an
> implementation of that in C.
>
> If it isn't a homework assignment, and you're honestly in such, then
> you should know there's been a lot of research in this area, because
> primes are important in cryptographic applications. Once again, google
> is a good place to start on looking for recent research on the subject.
>
>    <mike
> --
> Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
> Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.



From mq-feedback at sun.com  Sat May 14 22:59:30 2005
From: mq-feedback at sun.com (MQ Feedback)
Date: Sat, 14 May 2005 19:59:30 -0700 (PDT)
Subject: Please confirm (conf#8d26af0fb789e6023d272db682e0f9b4)
In-Reply-To: <7f5442b6.a08ad951bb7@python.org>
Message-ID: <200505150259.TAA29054@jpgserv.red.iplanet.com>


Thank you for your feedback.

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--- Original Message Follows ---

From: python-list at python.org
To: e_smtp at sun.com
Date: Sun, 15 May 2005 02:58:54 UTC
Subject: Dresden Bombing Is To Be Regretted Enormously

Full Article:
http://service.spiegel.de/cache/international/0,1518,341239,00.html





From fredrik at pythonware.com  Fri May 13 12:21:02 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Fri, 13 May 2005 18:21:02 +0200
Subject: Question about extending the interperter
References: <1115654593.479760.52610@o13g2000cwo.googlegroups.com><mailman.225.1115666310.29826.python-list@python.org>
	<1115705398.691970.141980@o13g2000cwo.googlegroups.com>
Message-ID: <d62jmn$m0s$1@sea.gmane.org>

"Eli" <elie at flashmail.com> wrote:

> Thanks for the answer; I should better explain my problem.

that's always a good idea ;-)

> So a solution would be creating 'function 1' which preprocess the input
> and calls the original function 1, than do so for any other function.
> This works, but there are *lots* of such enteries and I'm trying a
> general way of doing so.

can you extract a list of all available commands?  if so, you can
add a call dispatcher to your interface module, and use Python
code to generate wrappers for all your commands:

    # File: mymodule.py

    import _mymodule # import the C interface

    class wrapper:
        def __init__(self, func):
            self.func = func
        def __call__(self, *args):
            # prepare args in a suitable way. e.g
            args = " ".join(map(str, args))
            return _mymodule.callafunction(self.func, args)

    # get list of function names
    FUNCTIONS = "myfunc", "yourfunc"

    # register wrappers for all functions
    g = globals()
    for func in FUNCTIONS:
        g[func] = wrapper(func)

>>> import mymodule
>>> mymodule.myfunc("hello")
DEBUG OUTPUT: myfunc(hello) -> 10
10

if the names are available in some internal structure, you can also
add a function that returns a list of function names, so you can do:

    for func in _mymodule.getfunctionnames():
        g[func] = wrapper(func)

</F>





From awb at fluent.com  Wed May 25 07:42:55 2005
From: awb at fluent.com (Andrew Bushnell)
Date: Wed, 25 May 2005 07:42:55 -0400
Subject: open file in dir independently of operating system
In-Reply-To: <1117021114.316734.117480@o13g2000cwo.googlegroups.com>
References: <1117021114.316734.117480@o13g2000cwo.googlegroups.com>
Message-ID: <429464BF.2030808@fluent.com>

I believe you want:

import os
f = open(os.path.join(dir, 'configuration.smo'), 'r')

...


Joerg Schuster wrote:

> Hello,
> 
> 
> I want to open the file 'configuration.smo' that is in directory dir.
> Yet, I don't know on which os my program is being run. On Unix I would
> say:
> 
> f = open(dir + '/configuration.smo', 'r')
> 
> What is the os-independent version of this line?
> 
> (I have read the manual of the module os, but I didn't see how to do
> it.)
> 
> 
> J?rg Schuster
> 

-- 
************************************
Andrew Bushnell
Lead Development Engineer
Fluent Inc.
10 Cavendish Court
Centerra Resource Park
Lebanon, NH  03766
awb at fluent.com
Phone: 603-643-2600, ext. 757
Fax: 603-643-1721
www.fluent.com
************************************


From curi at curi.us  Sun May 29 04:05:48 2005
From: curi at curi.us (Elliot Temple)
Date: Sun, 29 May 2005 01:05:48 -0700
Subject: need help of RE
In-Reply-To: <1117353427.242568.47010@g43g2000cwa.googlegroups.com>
References: <1117352350.179209.206930@z14g2000cwz.googlegroups.com>
	<mailman.230.1117353059.18027.python-list@python.org>
	<1117353427.242568.47010@g43g2000cwa.googlegroups.com>
Message-ID: <455AC326-39F4-4119-A473-50F9861F50A9@curi.us>


On May 29, 2005, at 12:57 AM, cheng wrote:

> im sorry, my engilsh is not vell well,
>
> the string not only contain '&' and '|' and it can be anyting
>
> i just want to split out the "whole word" inside the string

If the string could be anything, how do you know where the words are?

If it's whitespace that separates words, try out str.split()

-- Elliot Temple
http://www.curi.us/


---
[This E-mail scanned for viruses by Declude Virus]



From gh at ghaering.de  Mon May 16 14:30:06 2005
From: gh at ghaering.de (Gerhard Haering)
Date: Mon, 16 May 2005 20:30:06 +0200
Subject: [ANN] pysqlite 2.0.0 final released!
Message-ID: <20050516183006.GA4284@mylene.ghaering.de>

Hello everyone,

After pondering about a redesign of pysqlite for years, and now after half a
year of development, I am happy to finally announce the first stable release of
pysqlite2.

pysqlite a DB-API 2.0-compliant database interface for SQLite.

SQLite is a relational database management system contained in a relatively
small C library. It is a public domain project created by D. Richard Hipp.
Unlike the usual client-server paradigm, the SQLite engine is not a standalone
process with which the program communicates, but is linked in and thus becomes
an integral part of the program. The library implements most of SQL-92
standard, including transactions, triggers and most of complex queries.

pysqlite makes this powerful embedded SQL engine available to Python
programmers. It stays compatible with the Python database API specification 2.0
as much as possible, but also exposes most of SQLite's native API, so that it
is for example possible to create user-defined SQL functions and aggregates in
Python.

If you need a relational database for your applications, or even small tools or
helper scripts, pysqlite is often a good fit. It's easy to use, easy to deploy,
and does not depend on any other Python libraries or platform libraries, except
SQLite. SQLite itself is ported to most platforms you'd ever care about.

It's often a good alternative to MySQL, the Microsoft JET engine or the MSDE,
without having any of their license and deployment issues.

pysqlite homepage: http://pysqlite.org/

On the homepage, there's also a bug tracking system and a wiki.


Sources:
    http://initd.org/pub/software/pysqlite/releases/2.0/2.0.0/pysqlite-2.0.0.tar.gz

Windows binaries for Python 2.3:
    http://initd.org/pub/software/pysqlite/releases/2.0/2.0.0/pysqlite-2.0.0.win32-py2.3.exe 

Windows binaries for Python 2.4:
    http://initd.org/pub/software/pysqlite/releases/2.0/2.0.0/pysqlite-2.0.0.win32-py2.4.exe


Advantages of pysqlite 2.0 over pysqlite 1.x
============================================

- Straightforward:
  No surprises: pysqlite 2.0 does not convert any types behind your back. With
  default settings, it only supports the database types SQLite supports out of
  the box: INTEGER, REAL, TEXT, BLOB and NULL.

- Documentation:
  pysqlite 2.0 now has usable documentation. The usage manual covers the full
  API.

- Advanced type system:
  It is, however, possible to turn on type detection like in the old pysqlite.
  Types can be detected by their declared type in the "CREATE TABLE" statement.
  Or, for values that don't originate directly from tables or views, it's
  possible to detect the type from the column name via a neat trick. For
  details, look into the pysqlite usage manual. No more "-- types" hack like in
  the old pysqlite.

  Type conversion from Python to SQLite works via PEP-246-like object
  adaptation.

- Fine-grained transaction control:
  pysqlite 2.0 allows to control which type of transactions are opened via the
  transaction_isolation property - None for auto-commit mode or one of SQLite's
  transaction types "DEFERRED", "IMMEDIATE", "EXCLUSIVE".

- executemany() uses precompiled statements for optimal speed.

- Result sets are not prefetched any more, rows are only fetched on demand. So,
  pysqlite 2.0 behaves a lot nicer with respect to memory usage.

- pysqlite 2.0 supports both the "qmark" and "named" paramstyle. So you can
  supply query parameters as sequences or as mappings.

- Performance: 
  pysqlite 2.0 is almost entirely written in hand-coded C. Under most
  circumstances, it is noticeably faster than the old pysqlite. On the pysqlite
  wiki, there's a page with benchmarks:
    http://initd.org/tracker/pysqlite/wiki/PysqliteBenchmarks

  The benchmark shows that executemany() is 5 times as fast as in pysqlite 1.1.

Open issues:
============

pysqlite 2.0 does currently not compile under MacOS X Tiger (10.2 seems to work
for me on the SF compile farm), because of unresolved symbols. Unfortunately, I
don't have access to that platform. I will need a patch with a real fix from a
MacOS X users to fix the problem.


And, for those who have followed the alpha/beta testing:

Changes since pysqlite 2.0beta1
===============================

- Removed dead code.
- Improved error handling.
- Fixed a leak that occurred when erroneous SQL was sent to execute(many)().
- Recognize REPLACE as DML statement and start transactions appropriately.
- Issue a Warning when users send more than one SQL statement to execute(many)().
- Changed a few mappings SQLite error => DB-API exception.
- Added lots of new unit tests so all testable code paths are tested/executed.
  This was done when doing coverage testing using gcov.
- Implemented a nonstandard convenience method cursor.executescript(sql) to
  execute several SQL statements in a bunch, for example for creating a
  database initially.
- The converters dictionary was moved from the Connection object into the
  DB-API module. Register converters with
    register_converter(converter_name, callable).
- the prepareProtocol parameter is gone.
- instead, register adapters directly with register_adapter(type, adapter_callable)
  in the DB-API module.
- check for closed connections
- make sure it's impossible to destroy connections as long as there are still
  cursors using them
- fixed a crash when a converter returned None
- fixes to MANIFEST.in
- default converters and adapters for date/date and datetime/timestamp
- Replaced autocommit flag with isolation_level flag. This way, it's possible
  to use no transaction handling at all (autocommit), or control the types of
  transactions that are created (DEFERRED, IMMEDIATE, EXCLUSIVE).
- thread_id is now long instead of int - so pysqlite compiles on 64-bit
  platforms, too.
-- 
Gerhard H?ring - gh at ghaering.de - Python, web & database development
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From exarkun at divmod.com  Fri May 27 17:13:22 2005
From: exarkun at divmod.com (Jp Calderone)
Date: Fri, 27 May 2005 21:13:22 GMT
Subject: evaluated function defaults: stored where?
In-Reply-To: <M_Lle.4960$m%3.1072@trnddc02>
Message-ID: <20050527211322.559.1186769104.divmod.quotient.11328@ohm>

On Fri, 27 May 2005 21:07:56 GMT, David Isaac <aisaac0 at verizon.net> wrote:
>Alan Isaac wrote:
>> Default parameter values are evaluated once when the function definition
>is
>> executed. Where are they stored? ... Where is this documented?
>
>Forgive any poor phrasing: I'm not a computer science type.
>At http://www.network-theory.co.uk/docs/pytut/tut_26.html we read:
>"The execution of a function introduces a new symbol table
>used for the local variables of the function. More precisely,
>all variable assignments in a function store the value in the local
>symbol table; whereas variable references first look in the local
>symbol table, then in the global symbol table, and then in the table of
>built-in names."
>
>But the default values of function parameters seem rather like a static
>attributes of a class.
>Is that a good way to think of them?
>If so, are they somehow accessible?
>How? Under what name?
>

The inspect module will get them for you:

    exarkun at boson:~$ python
    Python 2.4.1 (#2, Mar 30 2005, 21:51:10) 
    [GCC 3.3.5 (Debian 1:3.3.5-8ubuntu2)] on linux2
    Type "help", "copyright", "credits" or "license" for more information.
    >>> def f(x='y'): pass
    ... 
    >>> import inspect
    >>> inspect.getargspec(f)
    (['x'], None, None, ('y',))
    >>> 

As to where they are actually stored, this should be considered an implementation detail, but you can look at inspect.py to see how it pulls the values out (they're just in an attribute on the function object).

Jp


From tjreedy at udel.edu  Thu May 12 13:18:06 2005
From: tjreedy at udel.edu (Terry Reedy)
Date: Thu, 12 May 2005 13:18:06 -0400
Subject: Can  get  reference of a part of a list?
References: <d6020b$3a7$1@news.yaako.com>
Message-ID: <d602lq$vlo$1@sea.gmane.org>


"flyaflya" <flyaflya at gmail.com> wrote in message 
news:d6020b$3a7$1 at news.yaako.com...
>I want make a 2-D array from a list,all elements is references of
> list's,like this:
> a = [1,2,3,4]
> b = [ [1,2], [3,4] ]
> when change any elements of a, the elements of b will change too, so I
> can  use some function for list to change b.
> c/c++ can work in this way,I think let b[0] = a[0:2], b[1] = a[2:3],but
>    it's not reference,it's copy.

Look into Numerical Python or Numarray, where slices are views instead of 
copies.

TJR





From jean_seb at videotron.ca  Wed May 18 22:59:36 2005
From: jean_seb at videotron.ca (=?ISO-8859-1?Q?Jean-S=E9bastien_Guay?=)
Date: Wed, 18 May 2005 22:59:36 -0400
Subject: Python on a public library computer
In-Reply-To: <1116417677.506240.261730@g47g2000cwa.googlegroups.com>
References: <1116069664.779281.320540@g47g2000cwa.googlegroups.com>
	<87r7g6rbz0.fsf@pobox.com>
	<mailman.67.1116286093.8733.python-list@python.org>
	<1116330665.197293.198950@o13g2000cwo.googlegroups.com>
	<861x858qav.fsf@guru.mired.org>
	<1116417677.506240.261730@g47g2000cwa.googlegroups.com>
Message-ID: <428C0118.2060301@videotron.ca>

Hi Anton,

>I just did a "telnet://localhost" and
>there was an error message from the appguard stating that "telnet.exe"
>wasn't allowed to run.
>  
>

Err, dumb question, did you try bringing python on a USB drive and 
renaming python.exe to winword.exe? (yes, I have seen so-called "locked 
down" machines with a "program black list" that were that stupid)

Worth a try! :-)

And then you could rename ssh.exe to explorer.exe, perl.exe to java.exe 
or something funny like that...

J-S

-- 
___________________________________________
Jean-S?bastien Guay   jean_seb at videotron.ca
             http://whitestar02.webhop.org/



From xah at xahlee.org  Sat May 28 03:12:16 2005
From: xah at xahlee.org (Xah Lee)
Date: 28 May 2005 00:12:16 -0700
Subject: What are OOP's Jargons and Complexities?
In-Reply-To: <1117003340.900449.124180@o13g2000cwo.googlegroups.com>
References: <1116843761.619249.144790@g47g2000cwa.googlegroups.com>
	<1117003340.900449.124180@o13g2000cwo.googlegroups.com>
Message-ID: <1117264336.229771.245070@g49g2000cwa.googlegroups.com>

The Rise of ?Constructors? and ?Accessors?

A instantiation, is when a variable is assigned a super-subroutine
(class). A variable assigned such a super-subroutine is now called a
instance of a class or a object.

In OOP practice, certain inner-subroutines (methods) have developed
into specialized purposes. A inner-subroutine that is always called
when the super-subroutine is assigned to a variable (instantiation), is
called a constructor or initializer. These specialized
inner-subroutines are sometimes given a special status in the language.
For example in Java the language, constructors are different from
methods.

In OOP, it has developed into a practice that in general the data
inside super-subroutines are supposed to be changed only by the
super-subroutine's inner-subroutines, as opposed to by reference thru
the super-subroutine. (In OOP parlance: class's variables are supposed
to be accessed/changed only by the class's methods.) Though this
practice is not universal or absolute. Inner-subroutines that change or
return the value of variables are called accessors. For example, in
Java, a string class's method length() is a accessor.

Because constructors are usually treated as a special method at the
language level, its concept and linguistic issues is a OOP machinery
complexity, while the Accessor concept is a OOP engineering complexity.

-----
to be continued tomorrow.

This is part of an installment of the article
?What are OOP's Jargons and Complexities?
by Xah Lee, 20050128. The full text is at
 http://xahlee.org/Periodic_dosage_dir/t2/oop.html

? Copyright 2005 by Xah Lee. Verbatim duplication of the complete
article for non-profit purposes is granted.

The article is published in the following newsgroups:
comp.lang.c,comp.lang.c++,comp.lang.lisp,comp.unix.programmer
comp.lang.python,comp.lang.perl.misc,comp.lang.scheme,comp.lang.java.programmer
comp.lang.functional,comp.object,comp.software-eng,comp.software.patterns

 Xah
 xah at xahlee.org
? http://xahlee.org/



From Danielnord15 at yahoo.se  Sat May 14 04:17:44 2005
From: Danielnord15 at yahoo.se (Svennglenn)
Date: 14 May 2005 01:17:44 -0700
Subject: replace text in unicode string
Message-ID: <1116058664.847601.293790@z14g2000cwz.googlegroups.com>

I'm having problems replacing text in a
unicode string.
Here's the code:

# -*- coding: cp1252 -*-

titel = unicode("?", "iso-8859-1")
print titel
print type(titel)

titel.replace("?", "a")


When i run this program I get this error:

    titel.replace("?", "a")
UnicodeDecodeError: 'ascii' codec can't decode byte 0xe4 in position 0:
ordinal not in range(128)


How can i replace text in the Unicode string?



From black.bird at NOSPAMtiscali.it  Tue May  3 02:51:02 2005
From: black.bird at NOSPAMtiscali.it (Michele Ferretti)
Date: Tue, 03 May 2005 06:51:02 GMT
Subject: WordPress Python Library 1.0
In-Reply-To: <mailman.82.1115102552.6583.python-list@python.org>
References: <Rmwde.850131$b5.37722456@news3.tin.it><mailman.49.1115067917.6583.python-list@python.org>	<VKwde.1322130$35.49403624@news4.tin.it>
	<mailman.82.1115102552.6583.python-list@python.org>
Message-ID: <qbFde.1322731$35.49440903@news4.tin.it>

Excused all, I have mistaken!
I did not know these rules
the next time I will follow them


Terry Reedy wrote:
> "Michele Ferretti" <black.bird at NOSPAMtiscali.it> wrote in message 
> news:VKwde.1322130$35.49403624 at news4.tin.it...
> Fran?ois Pinard wrote:
> 
>>[Michele Ferretti]
>>
>>
>>>http://www.blackbirdblog.it/programmazione/progetti/28
>>
>>
>>Quoted above, the full content of your article.  Is it a message?  It
>>surely does not look like an English sentence.
>>
>>Should we start a browser each time we see an URL?  Many of us are not
>>in such an Internet starvation.  If you want to raise our appetite,
>>maybe a few words of introduction or explanation would be welcome. :-)
>>
> 
> 
> ok, sorry, but subject is very explicit!
> 
> Michele, it is both polite and and uncontroversial standard practice in 
> Pythonland for announcements to include a sentence or two or a short 
> paragraph (in English) explaining what is being announced so people quickly 
> know whether it is of any interest or not.  Just watch here and you will 
> see many examples.
> 
> Terry J. Reedy
> 
> 
> 


-- 

Michele Ferretti

ICQ#: 14491159
Skype: m.ferretti79
black DOT bird AT tiscali DOT it
www.blackbirdblog.it


From __peter__ at web.de  Mon May  9 09:47:41 2005
From: __peter__ at web.de (Peter Otten)
Date: Mon, 09 May 2005 15:47:41 +0200
Subject: replace string patern with different value
References: <1115645021.903836.262590@z14g2000cwz.googlegroups.com>
Message-ID: <d5npkg$pg7$00$1@news.t-online.com>

ajikoe at gmail.com wrote:

> I would like to replace string with different values,
> For example :
> source = 'kode1 bla bla kode1 bla kode1'
> I have a list with each member will replace each of kode1.
> L = [11,22,33]
> So the new source will become:
> newsource = '11 bla bla 22 bla 33'

Here's one way to do it with regular expressions:

>>> def make_sub(items):
...     items = iter(items)
...     def sub(m):
...             return items.next()
...     return sub
...
>>> re.compile("kode1").sub(make_sub(str(i) for i in [11, 22, 33]),
... "kode1 bla bla kode1 bla kode1")
'11 bla bla 22 bla 33'

Peter




From pajo at pajo.com  Tue May  3 05:29:09 2005
From: pajo at pajo.com (Pajo)
Date: Tue, 03 May 2005 11:29:09 +0200
Subject: Python & SQLite
Message-ID: <d57g8v$n4c$1@sunce.iskon.hr>


What should I install so I can connect to sqlite from
Python.
One simple example would be very helpfull.


Thanks,

Pajo


From edbiano at rocketmail.com  Tue May 17 05:16:56 2005
From: edbiano at rocketmail.com (Eduardo Biano)
Date: Tue, 17 May 2005 02:16:56 -0700 (PDT)
Subject: Function parameter passing problem
Message-ID: <20050517091657.82409.qmail@web41012.mail.yahoo.com>

Hi,

I am new to python and tried to pass parameters
between one function to another. I tried two
approaches in doing this but failed. 

The first is, I tried to assign a variable in foo1()
inside an HTML <INPUT hidden> tag so that I can
retreive it in foo2() using (get_form_var()). But
failed using my limited python knowledge. The sample
code. 
    
def foo1(request, result)
    ...........
    ........... 
    Id_No, FirstName, LastName = result
    """       
    <HTML>
    ......
    ......  
    <INPUT NAME="id"  TYPE="hidden" VALUE="Id No">
   # I would like to assign Id_No variable to id.

    <INPUT NAME="submit" TYPE="submit" VALUE="SUBMIT">

   .......
   ......
   </HTML>
   """
 
The second is, I tried using "return Id_No" statement 
 foo2() function using a return statement below the
</HTML> tag. I tried this option but unfortunately
when I hit the SUBMIT button it only displayed the
variable and got stucked and didn't continue to the
called <FORM action=foo2> foo2().

I also have a problem with my user defined function
foo2() which I created at first with one parameter to
accept the variable of foo1(). But when I added
another parameter to accomodate some more and executed
the code, an error message TypeError: foo2() takes
exactly 2 arguments (1 given). I thought I can put as
many parameters I could since this is user defined
function, am I correct in this? 

I have no more options to this problem, hope you will
help me . Thank you in advance.

Cheers!
Ed



        
 


		
Discover Yahoo! 
Have fun online with music videos, cool games, IM and more. Check it out! 
http://discover.yahoo.com/online.html


From andreasp+python at qbcon.com  Thu May 26 04:52:45 2005
From: andreasp+python at qbcon.com (Andreas Pauley)
Date: Thu, 26 May 2005 10:52:45 +0200 (SAST)
Subject: Point of Sale Use Cases
Message-ID: <Pine.LNX.4.63.0505261042470.11226@skywalker.lan.qbcon.com>

Hi all,

I've started writing use cases for my open source point of sale system (my 
first attempt at use cases).

http://qualitypos.qbcon.com/

If anyone here has experience with either use cases or point of sale 
systems, feel free to comment or criticize.

Regards,
Andreas



From michele.simionato at gmail.com  Tue May 10 05:39:56 2005
From: michele.simionato at gmail.com (Michele Simionato)
Date: 10 May 2005 02:39:56 -0700
Subject: A Module on Time & Date
In-Reply-To: <mailman.267.1115717783.29826.python-list@python.org>
References: <mailman.267.1115717783.29826.python-list@python.org>
Message-ID: <1115717996.128467.3780@f14g2000cwb.googlegroups.com>

You should read the documentation and this:
http://www.catb.org/~esr/faqs/smart-questions.html

         Michele Simionato



From brenNOSPAMbarn at NObrenSPAMbarn.net  Fri May 13 19:40:49 2005
From: brenNOSPAMbarn at NObrenSPAMbarn.net (OKB (not okblacke))
Date: Fri, 13 May 2005 23:40:49 +0000 (UTC)
Subject: Python Documentation (should be better?)
References: <mailman.398.1115843305.29826.python-list@python.org>
	<3eishfF3d6ujU1@individual.net>
Message-ID: <Xns9655A9AB259B3OKB@213.155.197.138>

Greg Ewing wrote:

> Curiously I had the same problem just the other day,
> except with list instead of string. I think the problem
> is that the sections on the actual built-in types
> (list, str, dict, etc.) are one level too far down
> to appear in the table of contents of the Library
> Reference.
> 
> If things could be rearranged so that their names
> actually appeared in the table of contents, I think
> it would make a big difference in this area.

    	I would be satisfied if that table of contents page simply listed 
ALL the subsections, indented appropriately.  (As it is, it only lists 
them to two levels deep.)  This would also be handy in that if I knew I 
wanted to go to Mutable Sequence Types, I could click on that directly 
from the index instead of having to click through Sequence Types first.

-- 
--OKB (not okblacke)
Brendan Barnwell
"Do not follow where the path may lead.  Go, instead, where there is
no path, and leave a trail."
	--author unknown


From duncan.booth at invalid.invalid  Thu May 19 11:44:37 2005
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 19 May 2005 15:44:37 GMT
Subject: self-promotion of the decorator module
References: <1116484694.122678.11980@f14g2000cwb.googlegroups.com>
	<Xns965B6367B75F0duncanbooth@127.0.0.1>
	<1116499905.547537.209500@g49g2000cwa.googlegroups.com>
Message-ID: <Xns965BAA4238662duncanbooth@127.0.0.1>

Michele Simionato wrote:

> Duncan Booth:
>> Fortunately you have a list of
>> argument names readily available so it shouldn't be too
>> hard to generate unique names to use in their place.
> 
> It does not look too simple either. Whereas I can easily
> build valid Python identifiers which are extremely unlikely
> to clash with any identifier I can have in my program, it
> seems impossible to get an identifier which cannot be
> shadowed later . What about renaming
> name-> _name_, call -> _call_, func-> _func_, defarg->_defarg_ and
> checking that the argument list
> does not contain such reserved names by means of an assert statement?

I'm not sure I see the problem. You only have to pick names which are not 
the name of the current function not any of its arguments. These names get 
substituted into the string used to define the function which is exec'ed in 
its own private namespace. So long as they are unique within that namespace 
there shouldn't be a problem.


From Scott.Daniels at Acm.Org  Wed May 18 11:14:58 2005
From: Scott.Daniels at Acm.Org (Scott David Daniels)
Date: Wed, 18 May 2005 08:14:58 -0700
Subject: super() and automatic method combination
In-Reply-To: <mailman.147.1116424769.8733.python-list@python.org>
References: <7xvf5gra9z.fsf_-_@ruckus.brouhaha.com>	<Xns965A94007A1BBduncanbooth@127.0.0.1>
	<mailman.147.1116424769.8733.python-list@python.org>
Message-ID: <428b5583$1@nntp0.pdx.net>

Laszlo Zsolt Nagy wrote:
> 
>> The trick is that C.f only calls A.f, but A.f needs to end up calling 
>> B.f when it is used in a C.
>>  
>>
> I believe your response only applies to single inheritance. For classes 
> with muliple bases classes, you need to call the base methods one by one.
> 
> BTW I prefer to call the base methods in this form:
> 
> class AB(A,B):
>    def f(self):
>       A.f(self)
>       B.f(self)
> 
> This arises the question: is there a difference between these:
> 
> super(A,self).f()  # I do not use to use this....
> A.f(self)
> 
The difference is when you have a diamond inheritance diagram.
Here is a simple example:

class Bottom(object):
     def f(self):
         print 'Bottom'

class A(Bottom):
     def f(self):
         print 'A',
         super(A, self).f()

class B(Bottom):
     def f(self):
         print 'B',
         super(B, self).f()

class C(A, B):
     def f(self):
         print 'C',
         super(C, self).f()

C().f()

C A B Bottom

-------
Versus:
-------

class Bottom(object):
     def f(self):
         print 'Bottom'

class A(Bottom):
     def f(self):
         print 'A',
         Bottom.f(self)

class B(Bottom):
     def f(self):
         print 'B',
         Bottom.f(self)

class C(A, B):
     def f(self):
         print 'C',
         A.f(self)
         B.f(self)

C().f()

C A Bottom
B Bottom

--Scott David Daniels
Scott.Daniels at Acm.Org


From jhefferon at smcvt.edu  Sat May 28 10:00:52 2005
From: jhefferon at smcvt.edu (Jim)
Date: 28 May 2005 07:00:52 -0700
Subject: CVS interface module
Message-ID: <1117288852.725521.239660@o13g2000cwo.googlegroups.com>

Hello,

Inside of a Python script I need to work a CVS archive.  Nothing fancy,
but I need to update the local tree, change or add some files from time
to time, and commit.  Naturally I looked for a module that would allow
me to easily see if there were conflicts, the server is down, etc.

I've looked in this group, Googled around, etc., but I've not found
anything.  Is there a reasonably mature project that people use for
this purpose?

Thanks,
Jim



From modelnine at ceosg.de  Fri May 13 02:32:22 2005
From: modelnine at ceosg.de (Heiko Wundram)
Date: Fri, 13 May 2005 08:32:22 +0200
Subject: How to find the classname of an object? (was Python Documentation)
In-Reply-To: <d60nvq$c9o$1@sea.gmane.org>
References: <d60nvq$c9o$1@sea.gmane.org>
Message-ID: <200505130832.22247.modelnine@ceosg.de>

On Friday 13 May 2005 01:21, Christopher J. Bottaro wrote:
> For those of you following the Python Documentation thread, this is a good
> example of how the PHP manual is "better".  I found how to do this in a few
> seconds in PHP.  I searched the Python docs for "class name", "classname",
> "introspection" and "getclass".  I looked in the Class section of the
> tutorial also and also the Programming FAQ.  The "related functions"
> section of the PHP manual is really helpful.  It would be cool if in the
> section for the built-in function isinstance() or issubclass() there is a
> section for "related functions" that would point me to getclassname(obj)
> (if it exists).

There is no function to do this in Python (so you'll have a hard time finding 
it in the docs :-)), but there is a __bases__ member in any class/type which 
lists the immediate bases (and this is documented in the language reference, 
along with a reference in the tutorial when OO is introduced). Now, the 
following method lists all base classes:

def getBases(cls):
    bases = []
    stack = [cls]
    new_stack = []
    while stack:
        for cls in stack:
            if cls not in bases:
                bases.append(cls)
                new_stack.extend(cls.__bases__)
        stack = new_stack
        new_stack = []
    return bases

Example:

>>> class x(object):
...   pass
...
>>> class y(x):
...   pass
...
>>> class z(object):
...   pass
...
>>> class a(z,y):
...   pass
...
>>> def getBases(cls):
...     bases = []
...     stack = [cls]
...     new_stack = []
...     while stack:
...         for cls in stack:
...             if cls not in bases:
...                 bases.append(cls)
...                 new_stack.extend(cls.__bases__)
...         stack = new_stack
...         new_stack = []
...     return bases
...
>>> getBases(a)
[<class '__main__.a'>, <class '__main__.z'>, <class '__main__.y'>, <type 
'object'>, <class '__main__.x'>]

HTH!

--- Heiko.


From asbjs at stud.ntnu.no  Wed May 18 06:12:40 2005
From: asbjs at stud.ntnu.no (=?iso-8859-1?q?Asbj=F8rn_S=E6b=F8?=)
Date: 18 May 2005 12:12:40 +0200
Subject: How to learn OO of python?
References: <mailman.130.1116402087.8733.python-list@python.org>
Message-ID: <87wtpwhmg7.fsf@stud.ntnu.no>

could ildg <could.net at gmail.com> writes:

> I have learned python for over a month.
> I heard that it was very easy to learn, but when I tried to know OO of python,
> I found it really weird, some expressions seem very hard to understand,
> and I can't find enough doc to know any more about it.

Have you seen the python docs?  Maybe this link is of some help.
http://www.python.org/doc/2.4.1/tut/node11.html

Asbj?rn
-- 
Asbj?rn S?b?, post.doc. 
Centre for Quantifiable Quality of Service in Communication Systems
Norwegian University of Science and Technology
<URL: http://www.q2s.ntnu.no/ >


From news2 at mystrobl.de  Tue May 31 17:30:40 2005
From: news2 at mystrobl.de (Wolfgang Strobl)
Date: Tue, 31 May 2005 23:30:40 +0200
Subject: Determine if windows drive letter is hard drive or optical from
	python?
References: <1117219586.001829.74220@g49g2000cwa.googlegroups.com>
	<p49h915n6ikpnsemd8s5s3gj76rvprvbv6@4ax.com>
	<d7eqj0$c4b$1@wake.carmen.se>
Message-ID: <ullp91pjqf4ueku8mksab76ic2vfb4c8fi@4ax.com>

Magnus Lycka <lycka at carmen.se>:

>Wolfgang Strobl wrote:
>> ...     for drive in string.letters[len(string.letters)/2:]:
>
>Or better...
>......    for drive in string.ascii_uppercase:
>
>string.letters differ with locale, but Windows drives are always
>only A-Z (right?) and just iterating over upper case (or lower)
>seems more clear than to iterate over half of the sum of both...

Ooops. Your're right, of course. In my defense, I could argue that it
was a cut&paste job, from a program written long ago ...

-- 
Thank you for observing all safety precautions


From kyoguan at gmail.com  Sun May 15 22:48:21 2005
From: kyoguan at gmail.com (kyo guan)
Date: Mon, 16 May 2005 10:48:21 +0800
Subject: question about the id()
Message-ID: <428809fc.62d7a08a.1cfe.ffffd7ef@mx.gmail.com>

HI ALL:

	Can someone explain why the id() return the same value, and why these values are changing? Thanks you.

Python 2.4.1 (#65, Mar 30 2005, 09:13:57) [MSC v.1310 32 bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> class A(object):
...     def f():
...             pass
...     def g():
...             pass
...
>>>
>>> a=A()
>>> id(a.f)
11365872
>>> id(a.g)
11365872
>>>
>>>
>>> class B(object):
...     def f():
...             print 1
...     def g():
...             print 3
...
>>> b=B()
>>> id(b.f)
11365872
>>> id(b.g)
11365872
>>> id(a.f), id(a.g), id(b.f), id(b.g)
(11365872, 11365872, 11365872, 11365872)
>>> a.f is a.g
False
>>> id(a.f), id(a.g), id(b.f), id(b.g)
(11492408, 11492408, 11492408, 11492408)
>>> a.f is a.g
False
>>> id(a.f), id(a.g), id(b.f), id(b.g)
(11365872, 11365872, 11365872, 11365872)
>>>



From bdesth.quelquechose at free.quelquepart.fr  Mon May 23 16:18:30 2005
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Mon, 23 May 2005 22:18:30 +0200
Subject: Newbie python design question
In-Reply-To: <d6pq8b$6ms$1@nwrdmz02.dmz.ncs.ea.ibs-infra.bt.com>
References: <d6pq8b$6ms$1@nwrdmz02.dmz.ncs.ea.ibs-infra.bt.com>
Message-ID: <42923600$0$10513$636a15ce@news.free.fr>

Michael a ?crit :
> Hi,
> I'm trying to write a script to parse a .cpp file and begin to create a
> 'translational unit'.
> To do this i need to:
> 
> Go through the file and remove all 'C' comments as
> /* Comment 1*/
> (can be on multiple lines)
> 
> Go through and remove all 'C++' comments, anything between // and '\n' char.
> 
> The start at the top, and work the way through, with the following valid
> terms:
> 
> #include <filename>
> #include "filename"
>     - copy the contents of filename to this point in the file and continue.
> 
> #define X Y
>     -Store the term X,Y in DefineDictionary, then later if X is encountered,
> substitute Y.
> 
> namespace n
> {
> 
> };
>     -a  namespace, can contain classes, functions and sub-namespaces
> 
> class c
> {
> 
> 
> };
>     -a class.
> 
> 
> If i were to process this in C++, i would create some form of statemachine,
> similar to a regex engine... I would just like some ideas on the easiest way
> to implment this in python!!

I have no real answer, but well:
- there's a regexp module in the stdlib
- there's a quite nice FSM implementation on the Python Cookbook
- there are many Python-based parser generators

And I would of course recommand the reading of "Text Processing in 
Python"...

HTH
Bruno


From grante at visi.com  Tue May 10 15:39:48 2005
From: grante at visi.com (Grant Edwards)
Date: Tue, 10 May 2005 19:39:48 -0000
Subject: Python Graphing Utilities.
References: <-dadnS0X7IVccR3fRVn-uQ@entouch.net>
Message-ID: <11823g4ph2kkp8b@corp.supernews.com>

On 2005-05-10, Kenneth Miller <ken.miller at entouch.net> wrote:

> I am new to Python and i was wondering what graphing utlities
> would be available to me.

Exactly what do you mean by "graphing"?  I think pygnuplot
pretty much kicks for the graphs and plots I do.

-- 
Grant Edwards                   grante             Yow!  FIRST, I'm covering
                                  at               you with OLIVE OIL and
                               visi.com            PRUNE WHIP!!


From jacob.hurst at gmail.com  Tue May 17 06:17:28 2005
From: jacob.hurst at gmail.com (Jake)
Date: 17 May 2005 03:17:28 -0700
Subject: \r functionality
Message-ID: <1116325048.303756.222070@z14g2000cwz.googlegroups.com>

in c and c++ there is a useful way to refresh an output line in printf
and cout using \r meta command. So for example in the wget application
the progress of the download is updated on the same output line of the
screen. From an intital investigation python seems to lack this. Is
this correct?



From benji at benjiyork.com  Sat May 21 10:59:47 2005
From: benji at benjiyork.com (Benji York)
Date: Sat, 21 May 2005 10:59:47 -0400
Subject: How to learn OO of python?
In-Reply-To: <861x8337p7.fsf@guru.mired.org>
References: <mailman.130.1116402087.8733.python-list@python.org>	<8764xg69nr.fsf@hector.domek>	<1116417670.977767.235690@g14g2000cwa.googlegroups.com>
	<861x8337p7.fsf@guru.mired.org>
Message-ID: <428F4CE3.8010905@benjiyork.com>

 >"Harlin Seritt" <harlinseritt at yahoo.com> wrote:
 >class Animal:
 >   def eats(self):
 >      print 'The animal eats.'
 >   def walks(self):
 >      print 'The animal walks.'

 >   """#the self keyword means that this function will be a class
 >function"""

Mike Meyer wrote:
 > First, the correct terminology is class *method*. Yes, it looks like
 > a function definition, but it's a class method.

Perhaps you meant "instance method" instead of "class method".

 From http://docs.python.org/lib/built-in-funcs.html:

     A class method receives the class as implicit first argument, just
     like an instance method receives the instance.
--
Benji York


From rbt at athop1.ath.vt.edu  Tue May 17 11:19:39 2005
From: rbt at athop1.ath.vt.edu (rbt)
Date: Tue, 17 May 2005 11:19:39 -0400
Subject: Windows distribution suggestions?
In-Reply-To: <d6c6e6$mlf$1@news01.versatel.de>
References: <7x3bsmfjdg.fsf_-_@ruckus.brouhaha.com>
	<d6c6e6$mlf$1@news01.versatel.de>
Message-ID: <d6d22b$hd5$1@solaris.cc.vt.edu>

Bernhard Holzmayer wrote:
> Paul Rubin wrote:
> 
> 
>>As what must be penance for something or other, I'm needing to release
>>a Python app for use under Windows XP.  Please be gentle with me since
>>I'm a Un*x weenie and the only thing I've had much practice with under
>>Windows is rebooting it.
> 
> 
> I can feel your unhappiness, and I share it. Hi Paul!
> Here are some hints...
> 
> 
>>My app contains three different programs (say alice.py, bob.py, and
>>carol.py) that need to be independently launchable, and a dozen or so
>>other .py files that get imported into those first three.  What I'd
>>really really like is to make a single installer called (say)
>>"app.exe".  Launching app.exe should completely install Python, unpack
>>all the necessary modules, and make three icons (alice, bob, carol) on
>>the desktop.
> 
> 
> Since your installer needs to run before Python is installed, you need
> something else. Go to http://www.wisesolutions.com

Or, you could use a simple bat script... that's what I do.


From dave at pythonapocrypha.com  Fri May 20 17:07:05 2005
From: dave at pythonapocrypha.com (Dave Brueck)
Date: Fri, 20 May 2005 15:07:05 -0600
Subject: Is Python suitable for a huge, enterprise size app?
In-Reply-To: <7x1x81d5bx.fsf@ruckus.brouhaha.com>
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>	<1116432325.497438.64580@g49g2000cwa.googlegroups.com>	<1116433218.495131.71260@g49g2000cwa.googlegroups.com>	<1116443474.565264.176640@g44g2000cwa.googlegroups.com>	<7xd5rn93zi.fsf@ruckus.brouhaha.com>	<mailman.210.1116513794.8733.python-list@python.org>
	<7x1x81d5bx.fsf@ruckus.brouhaha.com>
Message-ID: <428E5179.20705@pythonapocrypha.com>

Paul Rubin wrote:
> Dave Brueck <dave at pythonapocrypha.com> writes:
> 
>>One thing from your experience that did resonate with me is that,
>>except for ftplib and occasionally urllib (for basic, one-shot GETs),
>>we don't use any of the standard library's "protocol" modules - partly
>>because we had to implement our own HTTP libraries for performance and
>>scalability reasons anyway, and partly because we had trouble figuring
>>out e.g. all the ins and outs of urllib/urllib2/httplib.
> 
> 
> What do you use for HTTPS?

Hi Paul,

m2crypto (plus some patches to make asynchronous SSL do what we needed).

> And did you use the Cookie module in your
> HTTP servers?  You may have had problems without even being aware of
> them (until recently if you used Cookie with its default settings, any
> attacker could completely take over your server by sending you
> carefully concoted cookies).

Are you referring to the use of pickle for cookie serialization? In any case, we 
didn't use Cookie.py from the stdlib (on the servers, nearly everything related 
to URLs & HTTP was custom-built, with the exception of urlparse, for the 
aforemenioned reasons).

-Dave


From bj_666 at gmx.net  Sat May  7 16:23:01 2005
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: Sat, 07 May 2005 22:23:01 +0200
Subject: python and glut
References: <kp7ee.1331058$35.49670814@news4.tin.it>
	<1115236689.318521.111420@z14g2000cwz.googlegroups.com>
	<bmsee.1336210$35.49849772@news4.tin.it>
	<1115322846.254200.55370@f14g2000cwb.googlegroups.com>
	<q06fe.1345165$35.50299638@news4.tin.it>
Message-ID: <pan.2005.05.07.20.23.01.669652@gmx.net>

In <q06fe.1345165$35.50299638 at news4.tin.it>, max(01)* wrote:

> Lonnie Princehouse wrote:
> 
>> DRI not working could also be a permissions issue; check to see if it
>> works as root.
> 
> that's it! :-)
> 
> now, how can i make it work as "joe user"?

I have this in my XF86Config and I'm in the `video` group::

  Section "DRI"
      Group      "video"
      Mode       0660
  EndSection

Ciao,
	Marc 'BlackJack' Rintsch


From ewitkop90 at hotmail.com  Mon May  2 20:23:23 2005
From: ewitkop90 at hotmail.com (ewitkop90 at hotmail.com)
Date: 2 May 2005 17:23:23 -0700
Subject: can't install a python app,
	due to what I think are LD_LIBRARY_PATH issues
Message-ID: <1115079803.731137.216570@g14g2000cwa.googlegroups.com>

This is the box and the variables.

ewitkop $ uname -a
SunOS remnssdtoolsp01 5.9 Generic_118558-03 sun4u sparc SUNW,UltraAX-i2

LD_LIBRARY_PATH=:/usr/lib:/usr/local/lib:/opt/sfw/lib:/usr/sfw/lib:/usr/local/lib/python2.3/site-packages/roundup:/usr/lib/lwp:/usr/local/lib/python2.3:/usr/local/lib/python2.3/site-packages/roundup/scripts
LOGNAME=root
ORACLE_HOME=/oracle/
ORACLE_SID=/oracle/
PATH=/usr/bin:/bin:/usr/sbin:/sbin:/usr/local:/usr/ccs/:/usr/local/bin:/usr/sbin:/export/home:/usr/ccs/bin/:/usr/local/lib:/usr/ucb:/opt/roundup/trackers:/usr/local/lib:/opt/roundup/trackers/support


When I go to call a python script to initialize the database, it
appears it cannot find the right files.

$ roundup-admin initialise
Enter tracker home: /opt/roundup/trackers/support
Admin Password:
       Confirm:
Traceback (most recent call last):
  File "/usr/local/bin/roundup-admin", line 3, in ?
    run()
  File
"/usr/local/lib/python2.3/site-packages/roundup/scripts/roundup_admin.py",
line 38, in run
    sys.exit(tool.main())
  File "/usr/local/lib/python2.3/site-packages/roundup/admin.py", line
1410, in main
    ret = self.run_command(args)
  File "/usr/local/lib/python2.3/site-packages/roundup/admin.py", line
1291, in run_command
    return self.do_initialise(self.tracker_home, args)
  File "/usr/local/lib/python2.3/site-packages/roundup/admin.py", line
490, in do_initialise
    tracker.init(password.Password(adminpw))
  File "/usr/local/lib/python2.3/site-packages/roundup/instance.py",
line 155, in init
    self._load_python('initial_data.py', {'db': db, 'adminpw': adminpw,
  File
"/usr/local/lib/python2.3/site-packages/roundup/configuration.py", line
1134, in __getitem__
    return Config.__getitem__(self, name)
  File
"/usr/local/lib/python2.3/site-packages/roundup/configuration.py", line
937, in __getitem__
    return self._get_option(name).get()
  File
"/usr/local/lib/python2.3/site-packages/roundup/configuration.py", line
296, in get
    _val = "@".join((_val, self.config["MAIL_DOMAIN"]))
  File
"/usr/local/lib/python2.3/site-packages/roundup/configuration.py", line
1134, in __getitem__
    return Config.__getitem__(self, name)
  File
"/usr/local/lib/python2.3/site-packages/roundup/configuration.py", line
937, in __getitem__
    return self._get_option(name).get()
  File
"/usr/local/lib/python2.3/site-packages/roundup/configuration.py", line
179, in get
    raise OptionUnsetError(self)
roundup.configuration.OptionUnsetError: MAIL_DOMAIN is not set and has
no default
$

I have 777'ed every file that I can think of that may be called and
nothing is working. I know this is probably not the best forum for this
question but the roundup user list does not respond to any of my
emails. If anyone could help, I would be very appreciative.

Thanks.



From rrr at ronadam.com  Tue May 17 19:54:23 2005
From: rrr at ronadam.com (Ron Adam)
Date: Tue, 17 May 2005 23:54:23 GMT
Subject: Quick Reference from module doc strings.
In-Reply-To: <428a729a@nntp0.pdx.net>
References: <mailman.65.1116085574.29328.python-list@python.org>	<1116199904.205240.58300@g49g2000cwa.googlegroups.com>	<mailman.15.1116204313.8733.python-list@python.org>	<42880d98$1@nntp0.pdx.net>	<mailman.27.1116217027.8733.python-list@python.org>	<4288c71e@nntp0.pdx.net>
	<mailman.66.1116284785.8733.python-list@python.org>
	<428a729a@nntp0.pdx.net>
Message-ID: <Puvie.25417$VH2.11527@tornado.tampabay.rr.com>

Scott David Daniels wrote:
> Ron Adam wrote:
> 
>> ...What would be the advantage of using StringIO over list.append with 
>> ''.join()?
> 
> The advantage is more in using a function that prints as it goes
> rather than building up a large string to print.  I would call the
> print function at the bottom (with None as the print destination),
> rather than printing the result of calling the string function.

The reason I return the string to the calling function instead of 
printing it, is the person using it may not want to print it. They may 
want to send it to a file, or process it further before printing it. 
Same with the individual records.

> I just did the StringIO thing to show you that printing as you go
> needn't mean you cannot get the string value without duplicating code.
> 
> --Scott David Daniels
> Scott.Daniels at Acm.Org

I've used IO Streams,(">>" and "<<"), before in C, where I was 
continually reading to and writing from a buffer as I went. (Back when 
memory was often smaller than most files.)

I haven't played around with the StringIO module yet, and this will 
probably be more of a database application rather than just formatting 
input for output.  So for now the strings operations are fine until I 
better decide how they will get used.

Maybe further down the road I'll convert them to, or have a need for 
serialized objects, so I'll keep the STringIO module in mind. :-)

Cheers,
_Ron


From patrick.aubouin at wanadoo.fr  Wed May  4 11:49:05 2005
From: patrick.aubouin at wanadoo.fr (patrick.aubouin at wanadoo.fr)
Date: Wed, 04 May 2005 15:49:05 GMT
Subject: No subject
Message-ID: <e85dacd4.9fbda9ecf43@wanadoo.fr>

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From jhe13586 at bigpond.net.au  Sun May  1 11:31:09 2005
From: jhe13586 at bigpond.net.au (Joal Heagney)
Date: Sun, 01 May 2005 15:31:09 GMT
Subject: Reusing object methods?
In-Reply-To: <slrnd76a58.aur.axel@m2.sine>
References: <d4trsp$jsl$1@bagan.srce.hr> <slrnd76a58.aur.axel@m2.sine>
Message-ID: <1D6de.36104$5F3.3773@news-server.bigpond.net.au>

Axel Straschil wrote:
> Hello!
> 
> Why not:
> 
> 
>>class A:
>>     def a_lengthy_method(self, params):
>>          # do some work depending only on data in self and params
>>
>>class B(A): pass
> 
> 
> ?
> 
> Lg,
> AXEL.

As a rough guess, I think the original poster was wondering how to 
include *one* specific method from class A into B, without including all 
the methods of A. Jp Calderone's suggestion of defining a special Mixin 
class seems to be the cleanest implementation.

E.g.

class MyMixin:
	""" Defines only a single method. It may be a debug call, or
	a replacement for the classes' string representation. Etc. """
	def a_lengthy_method(self,params):
		# do some work

class A(MyMixin):
	def other_lengthy_procedures(self, params):
		pass

class B(MyMixin):
	pass

The advantage of this is that you can define a normal inheritance tree 
for a variety of classes, and then specifically override a single (or 
group) of methods by placing the MyMixin class at the front of the 
inheritance call. (The book "Programming Python" uses this a LOT in the 
Tkinter section.)

E.g.

class C:
	def well_now_what_do_we_do(self):
		# stuff
	def a_lengthy_method(self,params):
		# This does the wrong stuff.

class D(MyMixin, C):
	def __init__(self):
		# blahblahblah

Now class D has the "correct" a_lengthy_method, inherited from MyMixin, 
as well as all the other methods from class C, and the methods defined 
in it's own class statement.

Joal



From enleverlesO.OmcO at OmclaveauO.com  Sat May 21 00:43:58 2005
From: enleverlesO.OmcO at OmclaveauO.com (Do Re Mi chel La Si Do)
Date: Sat, 21 May 2005 06:43:58 +0200
Subject: Memory errors with large zip files
References: <1116609022.526500.317990@g44g2000cwa.googlegroups.com>
Message-ID: <428ebca3$0$849$8fcfb975@news.wanadoo.fr>

Hi


I had make this test (try) :

 - create 12 txt's files of 100 MB  (exactly 102 400 000 bytes)
 - create the file "tst.zip" who contains this 12 files (but the file result 
is only 1 095 965 bytes size...)
 - delete the 12 txt's files
 - try your code

And... it's OK for me.

But : the compressed file is only 1 MB of size ; I had 1 GB of RAM ; I use 
windows-XP

Sorry, because :
   1) my english is bad
   2) I had no found your problem


Michel Claveau








From Jan.Wienhausen at Physnet.uni-hamburg.de  Wed May 11 10:29:01 2005
From: Jan.Wienhausen at Physnet.uni-hamburg.de (Jan Wienhausen)
Date: Wed, 11 May 2005 16:29:01 +0200
Subject: pylab: plot update
Message-ID: <d5t4h9$2ai$1@rzsun03.rrz.uni-hamburg.de>

Hi,
I need to do a plot of data that is beeing acuired. For that the plot 
needs to be updated after aquiering a new tuple.
At the moment I allways do this after a new tuple is aqcuired:
	
	plot(ar[0,i-1:i],br[1,i-1:i],'ro')
	show()
#ar is arrays were the new tuple is put in position [0,i] and [1,i]

After that i call sleep(5) until I can acuire the next tuple.
But during that I can't use the zoom/pan, save etc in the window.

Moreover the first time I call plot and show the first point is drawn 
correctly but I have to close the window otherwise the program does not 
run any further. But after closing the window ones it runs without any 
problems.

Is there any better way to do this easily?

Thanks,
Jan


From sas5692 at nowhere.yahoo.com  Fri May 20 07:03:13 2005
From: sas5692 at nowhere.yahoo.com (Susan A. Smith)
Date: Fri, 20 May 2005 11:03:13 GMT
Subject: pyvm -- faster python
In-Reply-To: <mailman.164.1115548611.29826.python-list@python.org>
References: <mailman.164.1115548611.29826.python-list@python.org>
Message-ID: <Rtjje.1138$mK.450@newssvr13.news.prodigy.com>

I have read about parrot.  How is that progressing?

Stelios Xanthakis wrote:
> Hi.
> 
> pyvm is a program which can run python 2.4 bytecode (the .pyc files).
> A demo pre-release is available at:
>     http://students.ceid.upatras.gr/~sxanth/pyvm/
> 
> 
> Facts about pyvm:
> - It's FAST. According to the "cooked-bench" benchmark suite it finishes
>   in 55% of the time python takes;)
> - It's SMALL. Currently the source code is under 15k lines with the
>   builtin modules.
> - It's new. Uses no code from CPython.
> - It's incomplete. Not even near the stability and quality of python.
>   It needs A LOT of work before it can be compared to CPython.
>   Moreover, at the time it lacks many things like closures, long numbers
>   new style classes, etc.
> - It's incompatible with CPython. Not all programs run.
> - The C API is incompatible. You can't run C modules (a thin wrapper to
>   make pyvm appear as libpython *could* be possible but not a goal
>   AFAIC)
> - The demo is an x86/linux binary only. You shouldn't trust binaries,
>   run it in a chrooted environment not as root!
> 
> Hope it works!
> 
> Cheers,
> 
> Stelios


From db3l at fitlinxx.com  Fri May  6 19:45:55 2005
From: db3l at fitlinxx.com (David Bolen)
Date: 06 May 2005 19:45:55 -0400
Subject: py2exe + svn - the final drama
References: <427AD7E8.1060500@open-networks.net>
	<mailman.96.1115384045.29826.python-list@python.org>
	<uoebojc8g.fsf@fitlinxx.com>
	<just-075293.00240707052005@news1.news.xs4all.nl>
	<mailman.118.1115420568.29826.python-list@python.org>
Message-ID: <u64xvkjf0.fsf@fitlinxx.com>

Timothy Smith <timothy at open-networks.net> writes:

> what i do is as soon as the update is complete i close the app, but it
> still gives the error, i tried clear() after update and before it, it
> still got the same error. it's be nice to not have to fiddle around
> with the zip file, i really think making py2exe create a dir instead
> of a zip will be much better

Well, you'd still potentially have a problem if the update changed a
file in that directory that hadn't been imported yet, but now depended
on other updated files that your application had already loaded old
versions for.  That's a general problem of updating modules beneath
the executing application, and not really specific to the zip file,
although you're getting a zip importer specific error related to that
in this case.

> here what i do anyway
> 
> if (os.name == 'nt') or (os.name == 'win32'):
>                      client = pysvn.Client()
>             #get current revision number
>             CurrentRev = client.info('').revision.number
>                      Check = client.update('')
>             sys.path_importer_cache.clear()
>                      if Check.number > CurrentRev:
>                 self.Popup('Update installed, click ok and restart
> ','Update installed')
>                 self.Destroy()
>          else:
>             InfoMsg.Update(3,'No Updates needed')

Ah, it's more devious than I thought.  Just pointed out the other
missing piece in his response.

Apparently there are two levels of caching that you've got to defeat
if you change the underlying zip:

1. A global file set of file directory cache information for any opened
   zip file (for all files in the zip).  This is held in the zipimport
   module global _zip_directory_cache.
2. Individual file cached information within the zipimporter instance
   that is kept in the path importer cache (sys.path_importer_cache).
   Technically these are just references to the same individual entries
   being held in the dictionary from (1).

So when you cleared out (2), it still found the cached directory at
the zipimport module level and re-used that information.  But if you only
clear out (1), then the reference in (2) to the directory entries for
currently imported modules remains and still gets used.

I tried testing this with a small zip file that I first built with normal
compression on the entries, then imported one from a running interpreter,
and then rebuilt the zip without compression.  I couldn't seem to get the
precise error you were getting, but doing this gave me a decompression
error upon an attempted reload of an imported module, since the cached
information still thought it was compressed.

After clearing both sys.path_importer_cache and
zipimport._zip_directory_cache, the reload went fine.

It's sort of unfortunate that you have to cheat with the "private"
cache clearing in this case.  It might be worth an enhancement request
to see if zipimport could know to update itself if the timestamp on
the zip file changes, but this is sort of a very specialized scenario.
Although maybe just a public way to cleanly flush import cache
information would be useful.

-- David


From grant at idscape.co.za  Tue May 31 02:43:15 2005
From: grant at idscape.co.za (grant at idscape.co.za)
Date: 30 May 2005 23:43:15 -0700
Subject: struct unpack newline
In-Reply-To: <mailman.170.1117189924.18027.python-list@python.org>
References: <1117189007.980813.182830@g14g2000cwa.googlegroups.com>
	<mailman.170.1117189924.18027.python-list@python.org>
Message-ID: <1117521795.897167.293120@g49g2000cwa.googlegroups.com>

Hi ,

Thanks for the tip regarding checking the length of line. I discovered
that on the problem record it was short by a few bytes. After changing
the read method from "for line in.." to "infile.read(n)" my problem was
solved,
what concerns me though is that although the file is opened in binary
mode,
"for line.." has a problem reading the file correctly.

Thanks
Grant


Fredrik Lundh wrote:
> grant at idscape.co.za wrote:
>
> > I am pretty new to python and am having a problem
> > intepreting binary data using struct.unpack.
> > I am reading a file containing binary packed data
> > using open with "rb". All the values are coming through
> > fine when using (integer1,) = struct.unpack('l', line[86:90])
> > except when line[86:90] contains "carriage-return" "linefeed"
> > which are valid binary packed values. Error = unpack
> > string size dows not match format. It seems that
> > struct, instead of reading 4 bytes for line[86:90]
> > only reads 2 bytes if the second byte is CR or LF.
>
> verifying that struct doesn't care about newlines is of course
> pretty trivial:
>
> >>> import struct
> >>> struct.unpack("l", "\0\0\0\0")
> (0,)
> >>> struct.unpack("l", "\0\r\0\0")
> (3328,)
> >>> struct.unpack("l", "\0\n\0\0")
> (2560,)
>
> have you verified that len(line) really is what you think?
>
> >>> struct.unpack("l", "\0\r\n\0")
> (658688,)
> >>> struct.unpack("l", "\0\n\0")
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
> struct.error: unpack str size does not match format
> 
> </F>



From alexs at advfn.com  Mon May 23 03:05:27 2005
From: alexs at advfn.com (Alex Stapleton)
Date: Mon, 23 May 2005 08:05:27 +0100
Subject: first release of PyPy
In-Reply-To: <1116629407.638782.145950@g47g2000cwa.googlegroups.com>
References: <mailman.264.1116625088.8733.python-list@python.org>
	<1116629407.638782.145950@g47g2000cwa.googlegroups.com>
Message-ID: <7F0F72C5-1C76-4670-9D44-8C64BAE82E5F@advfn.com>

The question still remains, can it run it's self? ;)

On 20 May 2005, at 23:50, Kay Schluehr wrote:

>
> holger krekel wrote:
>
>> Welcome to PyPy 0.6
>> --------------------
>>
>> *The PyPy Development Team is happy to announce the first
>> public release of PyPy after two years of spare-time and
>> half a year of EU funded development.  The 0.6 release
>> is eminently a preview release.*
>>
>
> Congratulation to You and Your team!
>
> PyPy is really awesome and if it succeeds in speed demands after the
> translation phase I believe that the project will shift the power
> within the Python community on the long run. There are moments I'm
> almost shocked about it and think about the fate of other programming
> programming languages like LISP. PyPy can be resolved to "Python in
> Python" but also "Python multiplied/powered by itself" which is much
> more triumphant. A short review of the 'thunks' objspace example gives
> me the impression that the language development process as we know it
> comes to an end and makes a kind of transition. This is both very
> exciting and dangerous, like every philosophical event.
>
> Regards,
> Kay
>
> -- 
> http://mail.python.org/mailman/listinfo/python-list
>
>



From db3l at fitlinxx.com  Fri May  6 17:06:23 2005
From: db3l at fitlinxx.com (David Bolen)
Date: 06 May 2005 17:06:23 -0400
Subject: py2exe + svn - the final drama
References: <427AD7E8.1060500@open-networks.net>
	<mailman.96.1115384045.29826.python-list@python.org>
Message-ID: <uoebojc8g.fsf@fitlinxx.com>

Timothy Smith <timothy at open-networks.net> writes:

> Timothy Smith wrote:
(...)
> >zipimport.ZipImportError: bad local file header in Z:\temp\library.zip
> >
> > not that once i have finished client.update(''), it has successfully
> > updated the zipfile, i open a dialoge box saying "click ok and
> > restart program" AFTER i click on the above error pops up and my app
> > shuts down as intended.
> >
> >ideas?
> >
> ok i have done some digging and i cound this
> 
> /* Check to make sure the local file header is correct */
> 	fseek(fp, file_offset, 0);
> 	l = PyMarshal_ReadLongFromFile(fp);
> 	if (l != 0x04034B50) {
> 		/* Bad: Local File Header */
> 		PyErr_Format(ZipImportError,
> 			     "bad local file header in %s",
> 			     archive);
> 		fclose(fp);
> 
> 
> can anyone explain to me about zip file headers and why it would be
> different/incorrect and give me this error?

Are you perhaps trying to update the zip file in-place while it is still
being used by the application?  I'm not sure that's a safe operation.  A
quick peek at the same module where I think you found the above code shows
that when a zip importer instance is associated with a zip file, the
directory for that zip file is read in and cached.  So the importer is
holding onto offset information for each file based on the contents of the
zip directory at initialization time.

If you then change the file contents (such as updating it with svn), those
offsets will no longer be valid.  I then expect that during your process
exit, some bit of code is performing an extra import, which accesses the
wrong (based on the new file contents) portion of the zip file, and the
above safety check prevents it from loading an erroneous set of bytes
thinking its a valid module.

I expect you need to work on a mechanism to update the file
independently of the running copy, and then arrange to have it moved
into place for a subsequent execution.  Or find some way to have the
zip importer refresh its directory information or make a new importer
instance once the zip file is updated.

One (untested) thought ... before the update, make a copy of your
current library.zip as some other name, and adjust your sys.path to
reference that name (rather than the default pointer to the main
library.zip that py2exe initializes things with).  That should force
any future imports to access the old copy of the zip file and not the
one that svn will be updating.  Since you need to leave that zip file
copy in place through the exit (to satisfy any trailing imports),
arrange for your application to check for that copy on startup and
remove it if present.

Or, after looking through import.c handling for zip file imports,
there might be a simpler way.  ZIP imports are handled by a
zipimporter installed in sys.path_hooks, and once a specific path
element has a path hook instantiated for it (based on the sys.path
element name) it is cached in sys.path_hooks_cache.

So, simply clearing out the path_hooks_cache entry for your main
library.zip file should cause the next import attempt to re-create a
new zipimporter instance and thus re-open the file and re-load the
directory information.

I don't know if py2exe installs the library.zip into sys.path just as
"library.zip" or with some path information, but try checking out the
keys in sys.path_hooks_cache from your application when it is running.
You should find an entry (probably the only one unless you explicitly
augment sys.path yourself) for library.zip - clear out that key after
the update and see how it works.

Heck, since you're the efficiency hit is likely not an issue, just
flush all of sys.path_hooks_cache and don't even worry about the
actual key name for library.zip.  So a simple:
    sys.path_importer_cache.clear()
call after your update completes may do the trick.

-- David

PS: In the same way that updating the library.zip under the running
application is tricky, you might run into issues if you end up trying
to update one of the extension modules.  svn might not be able to
update it (depending on how it deals with "in use" files).


From Michael.Coll-Barth at VerizonWireless.com  Wed May 11 15:46:08 2005
From: Michael.Coll-Barth at VerizonWireless.com (Michael.Coll-Barth at VerizonWireless.com)
Date: Wed, 11 May 2005 15:46:08 -0400
Subject: Jesus said, "I am the way, the truth and the life: no one can
	come to the Father(God)(in Heaven), but by me." (John 14:6) This means t
	hat if you die without trusting in Jesus Christ as your Lord and
	Saviour you will die in your sins and be forever sep
Message-ID: <20050511194612.B730C1E4013@bag.python.org>


def testSpiritual():
    ''' look within '''
    if knowChrist:
       cryWithTheSaints()
    else:
       laughWithTheSinners()

    

-----Original Message-----
[mailto:python-list-bounces+michael.coll-barth=verizonwireless.com at python.or
g]On Behalf Of rbt

Who is this Jesus you are talking about? Does he know Python or 
something? What do fig trees have to do with Python and/or Jesus?
___________________________________________________________________
The information contained in this message and any attachment may be
proprietary, confidential, and privileged or subject to the work
product doctrine and thus protected from disclosure.  If the reader
of this message is not the intended recipient, or an employee or
agent responsible for delivering this message to the intended
recipient, you are hereby notified that any dissemination,
distribution or copying of this communication is strictly prohibited.
If you have received this communication in error, please notify me
immediately by replying to this message and deleting it and all
copies and backups thereof.  Thank you.



From peter at engcorp.com  Sat May  7 11:37:12 2005
From: peter at engcorp.com (Peter Hansen)
Date: Sat, 07 May 2005 11:37:12 -0400
Subject: get file modification time in mm/dd/yyyy format?
In-Reply-To: <1115479427.957430.114270@o13g2000cwo.googlegroups.com>
References: <1115479427.957430.114270@o13g2000cwo.googlegroups.com>
Message-ID: <ne6dnTTza-uOfOHfRVn-3g@powergate.ca>

beliavsky at aol.com wrote:
> Using Python 2.4 on Windows, for me the command
> 
> print os.stat("temp.txt")[stat.ST_MTIME]
> 
> gives
> 
> 1115478343 ,
> 
> which is "seconds since the epoch". How can I get the modification time
> in a format such as
> 
> 05/07/2005  11:05 AM
> 
> as in Windows with the dir command? Ideal would be a tuple of 6 values,
> (year,month,day,hour,minute,second). Thanks.

Do you want the time formatted as above, or as a tuple, since you seem 
unclear?

time.strftime('%m/%d/%Y  %H:%M %p', time.localtime(time.time()))

time.localtime(time.time())[:6] would do the latter...

Check the "time" module docs for more.

-Peter


From jtr at ofb.net  Tue May 17 14:50:19 2005
From: jtr at ofb.net (John Reese)
Date: Tue, 17 May 2005 18:50:19 +0000 (UTC)
Subject: reference counting and file objects
Message-ID: <slrnd8kf7b.40a.jtr@ofb.net>

def uselessHash(filename):
  fp= open(filename)
  hash= 0
  for line in fp:
    hash ^= hash(line.strip())
  fp.close() # do I need this or is fp closed by ref count?
  return hash
    
Consider the function above.  Do I need the fp.close(), or will the
file be closed automatically when fp goes out of scope and its
reference count drops to zero?

If so, there's really no point in calling .close() in situations like
this where the function completes in a relatively short time,, and if
not, I should probably be using try-finally.  That's my thinking... or
the thinking of the coworker who was arguing with me.


From nospam at spam.fr  Fri May 27 13:38:33 2005
From: nospam at spam.fr (nico)
Date: Fri, 27 May 2005 19:38:33 +0200
Subject: lambda a plusieurs arguments
Message-ID: <42975b1a$0$26423$626a14ce@news.free.fr>

Bonjour,

Comment faire une fonction lambda a plusieurs arguments ?

>>> (lambda a:a+1)(2)
3
>>> f=(lambda (a,b):a+b)
>>> f(5,6)
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
TypeError: <lambda>() takes exactly 1 argument (2 given)
>>> f((5.6))
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File "<stdin>", line 1, in <lambda>
TypeError: unpack non-sequence

pourquoi ca ne marche pas ? je ne comprends pas le message d'erreur !

Merci.


-- 
nico


From qwweeeit at yahoo.it  Sun May  8 18:14:52 2005
From: qwweeeit at yahoo.it (qwweeeit at yahoo.it)
Date: 8 May 2005 15:14:52 -0700
Subject: Strip white spaces from source
Message-ID: <1115590492.587606.108810@z14g2000cwz.googlegroups.com>

Hi all,
I need to limit as much as possible the lenght of a source line,
stripping white spaces (except indentation).
For example:
.   .   max_move and AC_RowStack.acceptsCards ( self, from_stack, cards
)
must be reduced to:
.   .   max_move and AC_RowStack.acceptsCards(self,from_stack,cards)

My solution has been (wrogly): ''.join(source_line.split())
which gives:
max_moveandAC_RowStack.acceptsCards(self,from_stack,cards)

Without considering the stripping of indentation (not a big problem),
the problem is instead caused by the reserved words (like 'and').

Can you help me? Thanks.



From http  Fri May 20 16:12:50 2005
From: http (Paul Rubin)
Date: 20 May 2005 13:12:50 -0700
Subject: Is Python suitable for a huge, enterprise size app?
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>
	<1116432325.497438.64580@g49g2000cwa.googlegroups.com>
	<1116433218.495131.71260@g49g2000cwa.googlegroups.com>
	<1116443474.565264.176640@g44g2000cwa.googlegroups.com>
	<7xd5rn93zi.fsf@ruckus.brouhaha.com>
	<mailman.210.1116513794.8733.python-list@python.org>
Message-ID: <7x1x81d5bx.fsf@ruckus.brouhaha.com>

Dave Brueck <dave at pythonapocrypha.com> writes:
> One thing from your experience that did resonate with me is that,
> except for ftplib and occasionally urllib (for basic, one-shot GETs),
> we don't use any of the standard library's "protocol" modules - partly
> because we had to implement our own HTTP libraries for performance and
> scalability reasons anyway, and partly because we had trouble figuring
> out e.g. all the ins and outs of urllib/urllib2/httplib.

What do you use for HTTPS?  And did you use the Cookie module in your
HTTP servers?  You may have had problems without even being aware of
them (until recently if you used Cookie with its default settings, any
attacker could completely take over your server by sending you
carefully concoted cookies).  I'm not trying to be contentious here,
just mentioning a couple further cases of where problems aren't
visible from far away but are there when you look close.


From grante at visi.com  Fri May 27 10:50:04 2005
From: grante at visi.com (Grant Edwards)
Date: Fri, 27 May 2005 14:50:04 -0000
Subject: write to the same file from multiple processes at the same time?
References: <e3617$429713d7$3eb01f24$9096@news.flashnewsgroups.com>
	<roy-29C1D4.09142527052005@reader1.panix.com>
	<XOqdnU5dNq_vgwrfRVn-rg@powergate.ca>
Message-ID: <119ecss4o7co9ef@corp.supernews.com>

On 2005-05-27, Peter Hansen <peter at engcorp.com> wrote:
> Roy Smith wrote:
>> gabor <gabor at nekomancer.net> wrote:
>> On the other hand, you said that each process will be writing a single line 
>> of output at a time.  If you call flush() after each message is written, 
>> that should be enough to ensure that the each line gets written in a single 
>> write system call, which in turn should be good enough to ensure that 
>> individual lines of output are not scrambled in the log file.
>
> Unfortunately this assumes that the open() call will always succeed, 
> when in fact it is likely to fail sometimes when another file has 
> already opened the file but not yet completed writing to it, AFAIK.

Not in my experience.  At least under Unix, it's perfectly OK
to open a file while somebody else is writing to it.  Perhaps
Windows can't deal with that situation?

-- 
Grant Edwards                   grante             Yow!  FOOLED you! Absorb
                                  at               EGO SHATTERING impulse
                               visi.com            rays, polyester poltroon!!


From philippe at philippecmartin.com  Fri May  6 13:26:48 2005
From: philippe at philippecmartin.com (Philippe C. Martin)
Date: Fri, 06 May 2005 17:26:48 GMT
Subject: SC-Corporate-ID released
Message-ID: <sNNee.1605$7U.1263@newssvr30.news.prodigy.com>

Dear all,

I am very pleased to announce the release of SC-Corporate-ID.

SC-Corporate-ID is a commercial Smart Card security system that can be
extended by the user using the Python language.

SC-Corporate-ID is written in Python and wxPython for the most part (except
for the PCSC wrapper, the GINA dll and the crypto) on the PC side, and
in .... other languages on the Smart Card side. The PCSC driver (PYCSC) and
the crypto (PYCRYPTO) are public domain packages (PYCSC was slightly
modified by us)

SC-Corporate-ID is an off-the shelf package: you can use it as is; yet, as
it is based on a set of libraries (SCF), it can be modified and customized
by the company using it (the restriction being the capabilities of the code
in the Smart Card which would have to be modified by us).

SC-Corporate-ID can be used for PC Access, Data Security (file
encryption/signature), Company Electronic Purse and Corporate
Identification. Some of its possible extentions are Building Access and WEB
Security.

SC-Corporate-ID cards can be delivered pre-programmed (firwmare + data) or
simply with the firmware so the user may handle its own cards issuance.

Although it is a commercial product, SC-Corporate-ID intends to be a true
low cost security solution for Corporations.

SC-Corporate-ID will soon be followed by a School/University ID as well as
an Health Card ID.

You may find information on SC-Corporate-ID at www.snakecard.com.


Best regards,


Philippe Martin


From rhall at thiess.com.au  Wed May 18 02:14:39 2005
From: rhall at thiess.com.au (Bloke)
Date: 17 May 2005 23:14:39 -0700
Subject: SSL (HTTPS) with 2.4
In-Reply-To: <428AD4D1.8030405@v.loewis.de>
References: <1116392416.139727.84630@g49g2000cwa.googlegroups.com>
	<428AD4D1.8030405@v.loewis.de>
Message-ID: <1116396878.995648.206820@g49g2000cwa.googlegroups.com>

Thanks Martin.  That means my code should work.

I am trying to go through a proxy, which works fine for HTTP sites.
However, when I try a HTTPS site, the program doesn't respond for quite
a while, and returns the error:

"  File "C:\Python24\lib\urllib2.py", line 996, in do_open
    raise URLError(err)
URLError: <urlopen error (8, 'EOF occurred in violation of protocol')>"

Here is my testing code:

import urllib2

proxy_info = {
    'user' : 'me',
    'pass' : 'mypassword',
    'host' : 'proxy.mycompany.com',
    'port' : 8008 }  # settings taken from web browser


# build a new opener that uses a proxy requiring authorization
proxy_support =
urllib2.ProxyHandler({"https":"https://%(user)s:%(pass)s@%(host)s:%(port)d"
% proxy_info})
opener = urllib2.build_opener(proxy_support, urllib2.HTTPHandler)

# install it
urllib2.install_opener(opener)

# use it
f = urllib2.urlopen('https://www.directshares.com.au')
print f.headers 
f.close()

Any ideas what is wrong?

Bloke



From stefanomail at noze.it  Wed May  4 11:23:33 2005
From: stefanomail at noze.it (Stefano Noferi)
Date: Wed, 04 May 2005 17:23:33 +0200
Subject: New Zope Italia Association (AZI)
Message-ID: <4278E8F5.7040305@noze.it>

We are pleased to announce the foundation of the Zope Italia
Association (AZI - Associazione Zope Italia).

It was created by a couple of mailing list users in the last months
(since march).

Main goals are to manage the Zope.IT community activities, to contribute
to the diffusion and to improve the visibility of Zope, Plone and Python
in Italy.

Further details can be found at http://zope.it.

-- 
Stefano Noferi
Zope Italia Association


From ucntcme at gmail.com  Sun May 29 01:32:41 2005
From: ucntcme at gmail.com (ucntcme at gmail.com)
Date: 28 May 2005 22:32:41 -0700
Subject: write to the same file from multiple processes at the same time?
In-Reply-To: <fcednbWcccFKPQrfRVn-2w@powergate.ca>
References: <e3617$429713d7$3eb01f24$9096@news.flashnewsgroups.com>
	<roy-29C1D4.09142527052005@reader1.panix.com>
	<XOqdnU5dNq_vgwrfRVn-rg@powergate.ca>
	<119ecss4o7co9ef@corp.supernews.com>
	<ytSdnaFbdrq5BArfRVn-ig@powergate.ca>
	<mailman.206.1117232893.18027.python-list@python.org>
	<fcednbWcccFKPQrfRVn-2w@powergate.ca>
Message-ID: <1117344761.685978.206780@f14g2000cwb.googlegroups.com>

Well I just tried it on Linux anyway. I opened the file in two python
processes using append mode.

I then wrote simple function to write then flush what it is passed:

def write(msg):
   foo.write("%s\n" %  msg)
   foo.flush()

I then opened another terminal and did 'tail -f myfile.txt'.

It worked just fine.

Maybe that will help. Seems simple enough to me for basic logging.

Cheers,
Bill



From steve at holdenweb.com  Tue May 31 07:23:56 2005
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 31 May 2005 07:23:56 -0400
Subject: Stupid Newbie Question Concerning CGI and Reading Forward Slashes
In-Reply-To: <1117533288.097148.134270@g14g2000cwa.googlegroups.com>
References: <1117533288.097148.134270@g14g2000cwa.googlegroups.com>
Message-ID: <d7hhan$avo$1@sea.gmane.org>

Joey C. wrote:
> Hi, I want to make a configuration script for something and it needs to
> read inputs from an HTML file.  A couple of these inputs are textboxes
> that the user inputs a path in.  For example:
> Your Home Directory:
> [/home/me/public_html/]
> 
> So, I'm using Python to read these inputs and store them in a
> configuration file.  However, I cannot get the CGI to read the forward
> slashes (/).  It just leaves a blank area.  So, for example:
> Input: /usr/bin/sendmail
> Reads: sendmail
> 
> Input: /home/me/public_html/
> Reads: (Nothing.)
> 
In which case you must be doing something wrong, as this mechanism is 
pretty much tried and tested, with no such oddities recorded.

> params = cgi.FieldStorage()
> 
> def writep(key, name):
>   if params.has_key(key):
>     fconfig.write(name + ": " + os.path.split(params[key].value)[1] +
> ";\n")
> 
You do, I suppose, realize that os.path.split(...)[1] will specifically 
remove the leading components of the path?

> ^ This is the function for handling a key that is read by the cgi.  The
> "name" is the name that it stores the key under so the configuration
> file looks like:
> name: key;[Line Break]
> 
This all seems as expected.

Surely it should be the *key* (i.e. the name of the field in the HTML 
file) that you use to store the whole value, i.e.:

def writep(key, name):
   if params.has_key(key):
     fconfig.write("%s: %s" % (name, params[key].value)

> However, is there a way to get it to read the forward slashes?  If
> there isn't do you suggest having the user use a different character
> and adding a function in the script to substitute a forward slash for
> that character?
> 
> I tried looking for this for a long while, but maybe I didn't search
> enough.  Thanks for all of your help and I'm sorry if this is a
> question that has been asked 15 million times.
> 
> Joey C.
> 
It's not a common question, but it's relatively easily answered. You are 
splitting everything but the filename off with os.path.split and then 
complaining about the result! Once you stop doing that your problem is 
solved.

regards
  Steve
-- 
Steve Holden        +1 703 861 4237  +1 800 494 3119
Holden Web LLC             http://www.holdenweb.com/
Python Web Programming  http://pydish.holdenweb.com/



From news at NOwillmcguganSPAM.com  Mon May 30 12:28:02 2005
From: news at NOwillmcguganSPAM.com (Will McGugan)
Date: Mon, 30 May 2005 17:28:02 +0100
Subject: How to run functions in the background?
In-Reply-To: <mailman.252.1117469476.18027.python-list@python.org>
References: <mailman.252.1117469476.18027.python-list@python.org>
Message-ID: <429b3f14$0$24484$da0feed9@news.zen.co.uk>

Ognjen Bezanov wrote:
> Hello
> 
> 
> I need to find a way to 'fork' a function into the background yet still
> be able to send commands to it.
> 
> I am writing a media player, and I have a function which plays the
> media. I want to be able to run this function but to (at the same time)
> be able to send commands from it (e.g. pause, play etc...)
> 
> How could I do this?

Put your function in a thread, and add a queue to send your commands. 
Look up 'thread' and 'queue' in the help.


Will McGugan
-- 
http://www.willmcgugan.com
"".join({'*':'@','^':'.'}.get(c,0) or chr(97+(ord(c)-84)%26) for c in 
"jvyy*jvyyzpthtna^pbz")


From skip at pobox.com  Mon May 16 16:20:26 2005
From: skip at pobox.com (Skip Montanaro)
Date: Mon, 16 May 2005 15:20:26 -0500
Subject: optparse global
In-Reply-To: <1116273397.597407.256760@g49g2000cwa.googlegroups.com>
References: <1116264761.204065.15980@g14g2000cwa.googlegroups.com>
	<mailman.52.1116265519.8733.python-list@python.org>
	<1116273397.597407.256760@g49g2000cwa.googlegroups.com>
Message-ID: <17033.138.54147.470649@montanaro.dyndns.org>


    Ashton> This does not seem to work. I still get the default value
    Ashton> 5007...

Hmmm...  Works for me (Python from CVS):

    % python testme.py 
    5007
    % python testme.py -p 5006
    5006
    % python testme.py -p5006
    5006

The only change from what you posted was to add

    from optparse import OptionParse

to txd.py.

Skip


From hello at spamm.er  Tue May 10 07:58:48 2005
From: hello at spamm.er (alex goldman)
Date: Tue, 10 May 2005 04:58:48 -0700
Subject: Language documentation ( was Re: Computing Industry shams)
References: <1115509201.680334.140840@f14g2000cwb.googlegroups.com>
	<874qdezh76.fsf@kafka.homenet> <1415322.AzhuxSBQdk@yahoo.com>
	<x78y2ot3zq.fsf@bolo.xenadyne.com>
Message-ID: <1955897.My2EmLpO4s@yahoo.com>

Sean Burke wrote:

> 
> alex goldman <hello at spamm.er> writes:
> 
>> vermicule wrote:
>> 
>> > 
>> > What is so hard to understand ?
>> > Should be perfectly clear even to a first year undergraduate.
>> > 
>> > As for "greedy" even a minimal exposure to Djikstra's shortest path
>> > algorithm would have made the concept intuitive. And from memory,
>> > that is the sort of thing done in Computing 101 and in  Data Structures
>> > and Algorithms 101
>> > 
>> > It seems to me that you want the Python doc to be written for morons.
>> > And that is not a valid complaint.
>> 
>> He's right actually. If we understand the term "greedy" as it's used in
>> graph search and optimization algorithms, Python's RE matching actually
>> IS greedy.
> 
> No, you're just confused about the optimization metric.
> In regexes, "greedy" match optimizes for the longest match,
> not the fastest.
> 
> And this is common regex terminology - man perlre and you will
> find discussion of "greedy" vs. "stingy" matching.

Read what you quoted again. Everyone (Xah, vermicule, myself) was talking
about "greedy" as it's used in graph search and optimization algorithms.


From gtcopeland2002 at yahoo.com  Fri May  6 14:08:38 2005
From: gtcopeland2002 at yahoo.com (Greg Copeland)
Date: 6 May 2005 11:08:38 -0700
Subject: inheritance with new-style classes - help
In-Reply-To: <1115402296.414753.324000@f14g2000cwb.googlegroups.com>
References: <1115402296.414753.324000@f14g2000cwb.googlegroups.com>
Message-ID: <1115402918.609095.254780@f14g2000cwb.googlegroups.com>

BTW, this is on Python 2.3.4.



From vincent at visualtrans.de  Mon May  9 01:24:02 2005
From: vincent at visualtrans.de (vincent wehren)
Date: Mon, 9 May 2005 07:24:02 +0200
Subject: computer unable to load _pysvn.pyc
References: <427EC230.1060300@open-networks.net>
	<mailman.184.1115604484.29826.python-list@python.org>
Message-ID: <d5ms5h$fku$1@news4.zwoll1.ov.home.nl>

"Timothy Smith" <timothy at open-networks.net> schrieb im Newsbeitrag 
news:mailman.184.1115604484.29826.python-list at python.org...
| Timothy Smith wrote:
|
| >this is truely maddening
| >
| >Traceback (most recent call last):
| >  File "PubWare.py", line 11, in ?
| >  File "Main.pyc", line 46, in ?
| >  File "pysvn\__init__.pyc", line 12, in ?
| >  File "pysvn\_pysvn.pyc", line 9, in ?
| >  File "pysvn\_pysvn.pyc", line 7, in __load
| >ImportError: DLL load failed: A device attached to the system is not
| >functioning.
| >
| >any ideas? it works perfectly on another computer
| >
| >
| ok more information - windows 98 computers have this issue, xp computers
| are fine.
| how do i work around this? obviously one of the pysvn dll's won't load
| on win98.

First, you will need to establish which .dll this is. Than check if the .dll 
has any dependencies that are not present on the host system (using 
depends.exe for example) -- i.e. function calls that are not supported.

--

Vincent Wehren


| note this is  py2exe package made on a windows xp system
| 




From codecraig at gmail.com  Tue May  3 15:06:20 2005
From: codecraig at gmail.com (codecraig)
Date: 3 May 2005 12:06:20 -0700
Subject: Read / Write image file
In-Reply-To: <1115146503.309071.110500@g14g2000cwa.googlegroups.com>
References: <mailman.596.1115144845.6582.python-list@python.org>
	<mailman.119.1115146065.6583.python-list@python.org>
	<1115146503.309071.110500@g14g2000cwa.googlegroups.com>
Message-ID: <1115147180.498396.248080@g14g2000cwa.googlegroups.com>

By the way, what is 'rb' and 'wb' ?

Also, when I create a client/server sockets I do something like...

SERVER
-----------
server.bind(('', 4321))
(sock, addr) = server.accept()
x = server.recv(1024)

CLIENT
------------
client.connect(('localhost', 4321))
x = open("abc.txt", "rb")
client.send(x)
client.close()
x.close()

...when I do this I get a constant beeping on my PC, any idea why?
Also, on the server ...how can I set that up so I can receive a
file/data of unknown size instead of just 1024?

thanks



From grante at visi.com  Thu May 12 11:51:05 2005
From: grante at visi.com (Grant Edwards)
Date: Thu, 12 May 2005 15:51:05 -0000
Subject: How "return" no return ?
References: <mailman.389.1115837608.29826.python-list@python.org>
	<1115839271.271071.32710@z14g2000cwz.googlegroups.com>
	<mailman.393.1115840571.29826.python-list@python.org>
	<1115841659.470657.33320@o13g2000cwo.googlegroups.com>
	<mailman.399.1115844290.29826.python-list@python.org>
	<eL2dnQWPyceN7B_fRVn-1w@comcast.com> <d5vs3i$54n$2@sea.gmane.org>
	<mailman.474.1115912549.29826.python-list@python.org>
Message-ID: <1186ur9d4bg4fa8@corp.supernews.com>

On 2005-05-12, Tim Williams <listserver at tdw.net> wrote:
> "Ximo" <elrei69 at yahoo.es> wrote in message
> news:3ehaurF34ak0U1 at individual.net...
>> Hello, I want that the return sentence don't return anything, how can I do
>> it?. If i do only return it returns None, and pass don't run too.
>>
>> Can anyone help me?, thanks.
>> XIMO
>>
>
> Just don't use a return statement at all,

That's exactly the same as "return None"

-- 
Grant Edwards                   grante             Yow!  World War Three can
                                  at               be averted by adherence
                               visi.com            to a strictly enforced
                                                   dress code!


From bill.pursell at gmail.com  Fri May 13 01:50:45 2005
From: bill.pursell at gmail.com (bill)
Date: 12 May 2005 22:50:45 -0700
Subject: bash like expansion
In-Reply-To: <86u0l8gjl7.fsf@guru.mired.org>
References: <1115923533.263490.67970@g44g2000cwa.googlegroups.com>
	<86u0l8gjl7.fsf@guru.mired.org>
Message-ID: <1115963445.944809.211740@g43g2000cwa.googlegroups.com>

Quick glance at the reference manual, and I think that pipes.Template
may do exactly what I want.  Is that what you're referring to?

I realized when I woke up that I have another slight irritant:
I need to be able to intelligently parse a command line.  ie
I need to correctly parse each of the following strings:

"echo foo"
"/bin/echo 'the cat'"
"$(which echo) foo"

and generate the list:
["/bin/echo", arg] where arg is either "foo" or "the cat"

I believe that Template will help me with this as well.  I'll look into
it today, after the dogs are walked...(note, shlex becomes annoying
here, as it will correctly tokenize "the cat" for me, but it splits
/bin/echo up into 4 tokens, which I now have to parse)

My current solution is to use os.system(a), but I'd much rather parse a
and use an exec function.

I'm not too concerned about portability accross different shells, as
long as it works in (ba)sh.  Also, I'm constrained to python 2.2, so I
have no doubt that there is a "shInterpret" module in 2.3 or 2.4!!



From janeaustine50 at hotmail.com  Mon May 16 19:44:30 2005
From: janeaustine50 at hotmail.com (janeaustine50 at hotmail.com)
Date: 16 May 2005 16:44:30 -0700
Subject: Anyway to designating the encoding of the "source" for compile?
References: <1116087091.856022.155340@z14g2000cwz.googlegroups.com>
	<1116263722.499345.73260@g43g2000cwa.googlegroups.com>
	<sg2i8119lqdrlu0sb6atgrj88cgjrda6f0@4ax.com>
	<1116286039.267037.91500@o13g2000cwo.googlegroups.com>
Message-ID: <1116287070.202497.16340@g44g2000cwa.googlegroups.com>


janeaustin... at hotmail.com wrote:
> John Machin ??:
> > On 16 May 2005 10:15:22 -0700, janeaustine50 at hotmail.com wrote:
> >
> > >janeaustine50 at hotmail.com wrote:
> > >> Python's InteractiveInterpreter uses the built-in compile
> function.
> > >>
> > >> According to the ref. manual, it doesn't seem to concern about
the
> > >> encoding of the source string.
> > >>
> > >> When I hand in an unicode object, it is encoded in utf-8
> > >automatically.
> > >> It can be a problem when I'm building an interactive environment
> > >using
> > >> "compile", with a different encoding from utf-8.
> >
> > I don't understand this. Suppose your "different encoding" is
cp125x
> > (where x is a digit). Would you not do something like this?
> >
> > compile_input = user_input.decode('cp125x')
> > code_object = compile(compile_input, ......
> >
> >
> > >> IDLE itself has the
> > >> same problem. ( '<a string with non-ascii-encoding>' is treated
> okay
> > >> but u'<a string with non-ascii-encoding>' is treated wrong.)
> > >>
> > >> Any suggestions or any plans in future python versions?
> > >
> > >I've read a posting from Martin Von Loewis mentioning trying to
> build
> > >in that feature(optionally marking encoding when calling
"compile").
> > >Anyone knows how it is going on?
> >
> > Firstly, it would help those who might be trying to help you if you
> > could post a simple example: input, output, what error message,
what
> > you mean by 'is treated wrong' ... and when it comes to Unicode
> > objects (indeed any text), show us repr(text) -- "what you see is
> > often not what others see and often not what you've actually got".
> >
> > Secondly, are any of the contents of PEP 263 of any use to you?
> > http://www.python.org/peps/pep-0263.html
>
>
> Okay, I'll use one of the CJK codecs as the example. EUC-KR is the
> default encoding.
>
> >>> import sys;sys.getdefaultencoding()
> 'euc-kr'
> >>> '??'
> '\xc7\xd1\xb1\xdb'
> >>> u'??'
> u'\ud55c\uae00'
> >>> s=compile("inside=u'??'",'','single')
> >>> exec s
> >>> inside #wrong
> u'\xc7\xd1\xb1\xdb'
> >>> s=compile(u"inside=u'??'",'','single')
> >>> exec s
> >>> inside #correct
> u'\ud55c\uae00'
>
> So I reckon that the "compile" should get a unicode object.
However...
>
> C:\Python24\Lib>python code.py
> > <string>(1)?()
> (Pdb) c
> Python 2.4 (#60, Nov 30 2004, 11:49:19) [MSC v.1310 32 bit (Intel)]
on
> win32
> Type "help", "copyright", "credits" or "license" for more
information.
> (InteractiveConsole)
> >>> '??'
> '\xc7\xd1\xb1\xdb'
> >>> u'??' #wrong.. should be u'\ud55c\uae00' instead
> u'\xc7\xd1\xb1\xdb'
> >>> import sys;sys.getdefaultencoding()
> 'euc-kr'
> >>> ^Z
>
> Am I right that I assume the problem lies in the code.py(and
therefore
> in codeop.py)? To correct the problem, I seem to parse each string
and
> change the literal unicode object... Hmm... Sounds a bad approach.

Oh, I forgot one more thing.

C:\Python24\Lib>python
Python 2.4 (#60, Nov 30 2004, 11:49:19) [MSC v.1310 32 bit (Intel)] on
win32
Type "help", "copyright", "credits" or "license" for more information.
>>> s=compile(u"'??'",'','single')
>>> exec s #wrong. the result is encoded in utf-8 instead of euc-kr
'\xed\x95\x9c\xea\xb8\x80'
>>> s=compile(u"u'??'",'','single')
>>> exec s #correct
u'\ud55c\uae00'
>>>



From mackstevenson at hotmail.com  Sat May 14 21:31:41 2005
From: mackstevenson at hotmail.com (MackS)
Date: 14 May 2005 18:31:41 -0700
Subject: converting a set into a sorted list
Message-ID: <1116120701.520116.315230@f14g2000cwb.googlegroups.com>

Dear all,

I've got several large sets in my program. After performing several
operations on these I wish to present one set to the user [as a list]
sorted according to a certain criterion. Is there any direct way to do
so? Or must I

list = []

for item in set1:
   list.append(item)

list.sort(....)

Can I somehow avoid doing this in two stages? Can I somehow avoid first
creating a long list only to immediately sort it afterwards?

Thanks for any guidance,

Mack



From andy at andybak.net  Mon May  2 15:04:34 2005
From: andy at andybak.net (andy at andybak.net)
Date: 2 May 2005 12:04:34 -0700
Subject: Quick and dirty dialogs?
In-Reply-To: <mailman.42.1115059895.6583.python-list@python.org>
References: <mailman.42.1115059895.6583.python-list@python.org>
Message-ID: <1115060674.394516.82000@o13g2000cwo.googlegroups.com>

By 'not needing TK' I meant 2 things:

1. Is there a one liner/no brainer as I'm short on time and, yes,
didn't want to start fiddling with anything new (normally I'd leap at
the opportunity ;-)

2. I couldn't remember if TK is installed by default on a vanilla OS X
install. My script is going to have to run there without very much time
for testing.

So. I should have asked specifically about TK on OS X shouldn't I! Does
anyone happen to know off hand?


Robert Brewer wrote:
> andy at andybak.net wrote:
> > What's the easiest way for a script to throw up simple dialogs such
as
> > file select and alerts?
> >
> > I thought there was something in the standard library that didn't
need
> > TK and was cross-platform but I can't seem to get my Google-fu
working
> > well enough to find it.
>
> If by "didn't need TK" you mean "I don't want to have to learn Tk",
try
> Steve Ferg's EasyGUI:
>
> http://www.ferg.org/easygui/
> 
> 
> Robert Brewer
> MIS
> Amor Ministries
> fumanchu at amor.org



From volker_grabsch at v.notjusthosting.com  Sat May 14 14:40:40 2005
From: volker_grabsch at v.notjusthosting.com (Volker Grabsch)
Date: Sat, 14 May 2005 20:40:40 +0200
Subject: Multiple "cmp"s chained one after another
References: <d64io9$s6o$05$1@news.t-online.com>
	<mailman.62.1116074866.29328.python-list@python.org>
	<y5edne3urKcSiBvfRVn-1A@comcast.com>
Message-ID: <d65gn8$fgr$02$1@news.t-online.com>

Steven Bethard wrote:
> Robert Kern wrote:
>      def mykey(d):
>          return (d.month, d.day)
> 
> The point here is that rather than chaining cmp() calls with ors, you 
> should just use a tuple -- the standard comparison order in tuples is 
> exactly what you're looking for.

That's an excellent idea! Thanks a lot. I really didn't think of the "key="
argument.


Greets,

-- 
Volker Grabsch
---<<(())>>---
\frac{\left|\vartheta_0\times\{\ell,\kappa\in\Re\}\right|}{\sqrt
[G]{-\Gamma(\alpha)\cdot\mathcal{B}^{\left[\oint\!c_\hbar\right]}}}


From "none\" at (none)  Sun May 15 11:14:24 2005
From: "none\" at (none) (none)
Date: Sun, 15 May 2005 10:14:24 -0500
Subject: Faster GUI text control
In-Reply-To: <mailman.10.1116135896.15315.python-list@python.org>
References: <A_udnVpGA43xjBjfRVn-iQ@comcast.com><mailman.59.1116053899.29328.python-list@python.org>	<B92dneFEus_FzhvfRVn-gQ@comcast.com>
	<mailman.10.1116135896.15315.python-list@python.org>
Message-ID: <Y4WdnaHHKKWP-hrfRVn-ow@comcast.com>

Fredrik Lundh wrote:
> "none <"@bag.python.org> wrote:
> 
> 
>>>no, it would mean writing some python code.  if all you need is a scrolling
>>>text list, you can simply use the code on this page:
>>>
>>>    http://effbot.org/zone/wck-4.htm
>>>
>>>(see "A scrollable list view, with scrollbar support" and, optionally,
>>>the virtual data modifications under "Displaying Huge Data Sets")
>>>
>>>the resulting widget will update at constant speed, independent of the
>>>data size.
>>>
>>></F>
>>
>>Thanks for the suggestion.  I looked at that, but I need to be able to
>>selectively change colors on parts of the text and I didn't think I
>>could do that with a list box.  Am I misunderstanding that?
> 
> 
> yes.  the list view isn't a listbox, it's a new widget.
> 
> with the list view, you control the drawing yourself, and can draw things
> in whatever way you want.  (the section "Non-Standard Rendering" talks
> about this; reading http://effbot.org/zone/wck-3.htm also helps).
> 
> </F>
> 
> 
> 
Thanks for the clarification.  I'm going to go back and read the 
"Writing widgets" articles in detail.


From mwm at mired.org  Wed May  4 14:23:14 2005
From: mwm at mired.org (Mike Meyer)
Date: Wed, 04 May 2005 13:23:14 -0500
Subject: python and glut
References: <kp7ee.1331058$35.49670814@news4.tin.it>
Message-ID: <86k6me7svh.fsf@guru.mired.org>

"max(01)*" <max2 at fisso.casa> writes:

> $ python GLE.py
> freeglut (GLE.py): OpenGL GLX extension not supported by display ':0.0'
>
> what's up? what's missing?

The GLX extension to your X server.

> i use a standard debian installation.

I don't know which X debian uses, and it may have changed over time,
so you'll want to specify the name of the distribution. You'd be
better off asking in a support group for the X distribution you're
using.

        <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From gtog at _no___spam_myrealbox.com  Thu May 12 09:41:14 2005
From: gtog at _no___spam_myrealbox.com (George)
Date: Thu, 12 May 2005 15:41:14 +0200
Subject: Launch file in Notepad
Message-ID: <42835db6$0$1334$5fc3050@dreader2.news.tiscali.nl>

Newbie question:

I'm trying to lauch Notepad from Python to open a textfile:

import os
b1="c:\test.txt"
os.system('notepad.exe ' + b1)

However, the t of test is escaped by the \, resulting in Notepad trying 
to open "c: est.txt".

How do I solve this?

(By the way, b1 comes from a command line parameter, so the user enters 
c:\test.txt as command line parameter.)

George


From dagurp at gmail.com  Tue May  3 11:59:28 2005
From: dagurp at gmail.com (dagurp at gmail.com)
Date: 3 May 2005 08:59:28 -0700
Subject: xml.parsers.expat and utf-8
Message-ID: <1115135968.071417.42560@z14g2000cwz.googlegroups.com>

I have this code:

import xml.parsers.expat
parser = xml.parsers.expat.ParserCreate(encoding="UTF-8")
text = unicode("<div>??r?ur</div>",'UTF-8')
print parser.Parse(text,1)

And this is what I get:
UnicodeEncodeError: 'ascii' codec can't encode characters in position
5-6: ordinal not in range(128)


I think I've tried all variations possible but I always get errors.
Anyone know what I'm doing wrong?



From removethis.kartic.krishnamurthy at gmail.com  Mon May 23 08:04:04 2005
From: removethis.kartic.krishnamurthy at gmail.com (Kartic)
Date: Mon, 23 May 2005 12:04:04 GMT
Subject: Access lotus notes using Python
In-Reply-To: <lWike.155$NV3.3324@news1.nokia.com>
References: <lWike.155$NV3.3324@news1.nokia.com>
Message-ID: <UEjke.447$2u1.383@newssvr19.news.prodigy.com>

The Great 'Sateesh' uttered these words on 5/23/2005 7:14 AM:
> Hi,
> Is it possible to access Lotus notes using Python? Can anyone provide me
> some pointers?
> 
> Thanks
> Sateesh
> 
> 

Yes, you can... You need the win32all distribution installed and you can 
access Notes using the COM interface (win32com.client).

Google for "Lotus Notes Python" gave the following as the first match.

http://www.dominopower.com/issuesprint/issue200008/command.html

Dig around.

Win32-perl has some nice COM examples for accessing Notes also. You can 
convert the Perl-win32 examples to  Python rather easily without knowing 
much perl.

Cheers,
-Kartic


From vegeta.z at gmail.com  Mon May  2 20:24:02 2005
From: vegeta.z at gmail.com (vegetax)
Date: Mon, 02 May 2005 20:24:02 -0400
Subject: cgi "print statement" in multithreaded enviroment?
References: <mailman.59.1115079020.6583.python-list@python.org>
	<4276c282$0$153$e4fe514c@news.xs4all.nl>
Message-ID: <d56fv2$usn$1@sea.gmane.org>

Irmen de Jong wrote:

> vegetax wrote:
>> How can i use cgi'like print statement in a multitreaded web framework?
>> each thread has its own Servlet instance with request/response objects,
>> sys.stdout = self.response(which is a file like object) wont work because
>> all threads will set the same file object and it will be a concurrence
>> mess.
>> 
>> I am out of ideas here,so any hacks welcome =)
>> 
> 
> instead of:
> 
>     print "<html>.....</html>
> 
> do:
> 
>     print >>self.response, "<html>....</html>"
> 
> 
> --Irmen

But i want to use "print" as a commodity feature, print >>
self.response,'html..'  is longer to type than
self.response.write('html..')

The only clear way i am thinking right now is to write a preprocessor ,like
quixote ptl,but thats sloww




From fusionary_2000 at yahoo.com  Tue May  3 22:22:52 2005
From: fusionary_2000 at yahoo.com (Gensek)
Date: 3 May 2005 19:22:52 -0700
Subject: Mod_python
Message-ID: <1115173372.255405.214330@o13g2000cwo.googlegroups.com>

I want to use mod_python, but I'm having trouble. Here's what I have in
my config:

LoadModule python_module /usr/local/apache2/modules/mod_python.so

<Directory /usr/local/apache2/htdocs/python>
    AddHandler mod_python .py
    PythonHandler mptest
    PythonDebug On
</Directory>

/usr/local/apache2/htdocs/python/mptest.py:

from mod_python import *

def handler(req):
    req.write("Hello")
    return apache.OK


http://localhost/python/mptest.py:

Mod_python error: "PythonHandler mptest"

Traceback (most recent call last):

  File
"/AcivePython-2.4/lib/python2.4/site-packages/mod_python/apache.py",
line 287, in HandlerDispatch
    log=debug)

  File
"/AcivePython-2.4/lib/python2.4/site-packages/mod_python/apache.py",
line 454, in import_module
    f, p, d = imp.find_module(parts[i], path)

ImportError: No module named mptest

Python is obviously binary, but I compiled Apache and modpython. I
restarted apache before using the config. I'm inclined to believe that
I'm doing everything right, but the computer isn't.

Is there any worthwhile alternative to modpython? I find it rather
troublesome.



From exarkun at divmod.com  Fri May 13 20:13:31 2005
From: exarkun at divmod.com (Jp Calderone)
Date: Sat, 14 May 2005 00:13:31 GMT
Subject: Solipsis: Python-powered Metaverse
In-Reply-To: <09da815umhec164dm8ja0k6l2h4i8icm36@4ax.com>
Message-ID: <20050514001331.15422.1782566605.divmod.quotient.37593@ohm>

7On Sat, 14 May 2005 02:28:57 +0300, Christos TZOTZIOY Georgiou <tzot at sil-tec.gr> wrote:
>On Wed, 11 May 2005 22:48:31 -0400, rumours say that "Terry Reedy"
><tjreedy at udel.edu> might have written:
>
>>>  and what if both computers
>>> wanted to participate on the port 6000 fun?
>
>>Recently, I had one family member use my purchased account to logon to and
>>play an online action game, which sends a constant stream of update info.
>>Then, curious what would happen, I logged on, from a different computer but
>>through the same router, with a temporary guest account.  Somewhat to my
>>surprise, it worked -- without touching the computer (XP) or router
>>settings.  And kept working the whole weekend.  So there is a way to tag
>>update packets so they can be reliably separated into two streams (and vice
>>versa).  Solipsis should be able to do the same.
>
>In your case, it's the internal address that originated the connection--
>so the router can distinguish the streams:
>
>(int1, port1)->(ext_host, port0)
>maps to (router_ext, port2)->(ext_host, port0)
>
>(int2, port3)->(ext_host, port0)
>maps to (router_ext, port4)->(ext_host, port0)
>
>Every TCP/UDP packet includes srcip, srcport, dstip, dstport, so an
>internal "dictionary" makes the translations to and fro (the router
>changes the srcip, srcport whenever a packet passes through).  The
>internal computer knows not that the router mangled the packets, and the
>external computer knows nothing about the internal computer address.
>
>However, if both of your internal computers listen to port 6000 for
>example, there is no easy way for the router to know to which one it
>should forward an *incoming* request for connection to port 6000-- all
>it knows is that some external computer connected to its external
>interface ip address at some specific port.  In this case, *typically*
>you would map port (router_ext, 6000) to (int1, 6000) and (router_ext,
>6001) to (int2, 6000).  The internal computers would both think that
>some computer is doing a connect at their port 6000.

  Combinations of marginally smart routers and non-broken protocols can deal with even this situation automatically, without user configuration or intervention.

  Traffic to (router_ext, N) from (ext, M) can be switched to (int1, N) or (int2, N) by simply noticing which of int1 or int2 has recently sent traffic from N to (ext, M).  If both have, you can still generally figure it out, by rewriting the source port automatically on the router.  Many routers support the former of these, and a sizable portion support the latter.

  Of course, if your protocol includes port numbers in the application areas of the packets it sends, the router usually can't properly rewrite the packet, so things go pear shaped.

  Jp


From exarkun at divmod.com  Sun May  8 21:11:41 2005
From: exarkun at divmod.com (Jp Calderone)
Date: Mon, 09 May 2005 01:11:41 GMT
Subject: how to calc the difference between two datetimes?
In-Reply-To: <d4c0d48005050818064a87b761@mail.gmail.com>
Message-ID: <20050509011141.15422.1218526573.divmod.quotient.26938@ohm>

On Sun, 8 May 2005 19:06:31 -0600, Stewart Midwinter <stewart.midwinter at gmail.com> wrote:
>After an hour of research, I'm more confused than ever. I don't know
>if I should use the time module, or the eGenix datetime module. Here's
>what I want to do:  I want to calculate the time difference (in
>seconds would be okay, or minutes), between two date-time strings.
>
>so: something like this:
>time0 = "2005-05-06 23:03:44"
>time1 = "2005-05-07 03:03:44"
>
>timedelta = someFunction(time0,time1)
>print 'time difference is %s seconds' % timedelta.
>
>Which function should I use?

  The builtin datetime module:

    >>> import datetime
    >>> x = datetime.datetime(2005, 5, 6, 23, 3, 44)
    >>> y = datetime.datetime(2005, 5, 8, 3, 3, 44)
    >>> x - y
    datetime.timedelta(-2, 72000)
    >>> y - x
    datetime.timedelta(1, 14400)
    >>> 

  Parsing the time string is left as an exercise for the reader (hint: see the time module's strptime function).

  Jp


From superprad at gmail.com  Mon May  9 18:36:37 2005
From: superprad at gmail.com (superprad at gmail.com)
Date: 9 May 2005 15:36:37 -0700
Subject: Unique Elements in a List
In-Reply-To: <1115676903.432187.294910@z14g2000cwz.googlegroups.com>
References: <1115676903.432187.294910@z14g2000cwz.googlegroups.com>
Message-ID: <1115678197.064079.28220@o13g2000cwo.googlegroups.com>

OK I need to be more clear I guess!Unique Elements I mean, elements
that are non repeating. so in the above list 0.4, 0.9 are unique as
they exist only once in the list.



From eric.nieuwland at xs4all.nl  Sat May  7 17:21:27 2005
From: eric.nieuwland at xs4all.nl (Eric Nieuwland)
Date: Sat, 7 May 2005 23:21:27 +0200
Subject: plug-ins
Message-ID: <2a72346f3042cee824a16deebf089021@xs4all.nl>

Hi all,

The app I'm working on keeps getting new transforms and I'm tired of 
adding them by hand. So here it goes:
Can anyone provide me with clues/examples/references on how to create a 
plug-in framework?

tx,
--eric



From peter at engcorp.com  Wed May  4 07:33:00 2005
From: peter at engcorp.com (Peter Hansen)
Date: Wed, 04 May 2005 07:33:00 -0400
Subject: How To Reply
In-Reply-To: <mailman.141.1115192187.6583.python-list@python.org>
References: <mailman.141.1115192187.6583.python-list@python.org>
Message-ID: <maednQbrx_hYL-XfRVn-hA@powergate.ca>

phil wrote:
> I get a digest several times a day.
> When I wish to respond to an item I must
> cut and paste the item and the subject line.
> Is there something to click on for a simple reply?
> Using an old mozilla mail.

You are forced to cut and paste if you want to get the messages in a 
digest.  I doubt any mail program has been designed to know how to do 
anything smarter, and I'm sure "old mozilla" wasn't.  Either accept the 
hard way, or stop using the "digest" approach.

(Please try not to use the Python list for basic questions about "how do 
I use my computer".  If everyone did that, this place would be a mess 
and your digests would be ten times larger.  Thanks.)

-Peter


From Sebastien.Boisgerault at gmail.com  Wed May 11 16:00:59 2005
From: Sebastien.Boisgerault at gmail.com (=?iso-8859-1?q?S=E9bastien_Boisg=E9rault?=)
Date: 11 May 2005 13:00:59 -0700
Subject: Python Documentation (should be better?)
In-Reply-To: <mailman.393.1115840571.29826.python-list@python.org>
References: <mailman.389.1115837608.29826.python-list@python.org>
	<1115839271.271071.32710@z14g2000cwz.googlegroups.com>
	<mailman.393.1115840571.29826.python-list@python.org>
Message-ID: <1115841659.470657.33320@o13g2000cwo.googlegroups.com>


"Manual" == scope of the *Lib Reference* + informal style of the
*Tutorial*,

Right ?

Consider non-official manuals such as:
    + http://diveintopython.org/toc/index.html (free)
    + python in a nutshell
    + python cookbook
    + etc. 

Cheers,

SB



From shrivastaw at gmail.com  Fri May  6 00:32:52 2005
From: shrivastaw at gmail.com (xeron)
Date: 5 May 2005 21:32:52 -0700
Subject: Newbie.......Python and Networking
In-Reply-To: <mailman.48.1115308694.29826.python-list@python.org>
References: <1115227469.785695.16360@f14g2000cwb.googlegroups.com>
	<mailman.13.1115229251.29826.python-list@python.org>
	<1115305350.366482.190520@f14g2000cwb.googlegroups.com>
	<mailman.48.1115308694.29826.python-list@python.org>
Message-ID: <1115353972.718015.134660@g14g2000cwa.googlegroups.com>

Thanks again, and i didn't peek.......planning to do it later have my
exams for next 14 days then I'll zero in on Python.......



From devrick88 at gmail.com  Thu May  5 13:20:48 2005
From: devrick88 at gmail.com (rickle)
Date: 5 May 2005 10:20:48 -0700
Subject: dictionary comparison
In-Reply-To: <1115312393.514506.77600@z14g2000cwz.googlegroups.com>
References: <1115306371.818120.150340@f14g2000cwb.googlegroups.com>
	<1115312393.514506.77600@z14g2000cwz.googlegroups.com>
Message-ID: <1115313648.259509.80170@z14g2000cwz.googlegroups.com>

Bill and Jordan, thank you both kindly.  I'm not too well versed in
functions in python and that's exactly what I needed.  I could see I
was doing something wrong in my original attempt, but I didn't know how
to correct it.

It's working like a charm now, thank you both very much.
-Rick



From mauriceling at acm.org  Thu May 19 19:27:31 2005
From: mauriceling at acm.org (Maurice LING)
Date: Fri, 20 May 2005 09:27:31 +1000
Subject: Is Python suitable for a huge, enterprise size app?
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>	<jmbsl2-opn.ln1@lairds.us>	<1116442276.918194.194110@g44g2000cwa.googlegroups.com>
	<mailman.163.1116443300.8733.python-list@python.org>
	<428c479f$0$31062$626a14ce@news.free.fr>
	<d6i08p$22o$1@domitilla.aioe.org>
	<qcidnZRl9uEDBRHfRVn-qQ@powergate.ca>
Message-ID: <d6j7d6$gne$1@domitilla.aioe.org>

Peter Hansen wrote:

> Maurice LING wrote:
> 
>> It makes big difference (legally) to if the codes are there and 
>> someone sees it, to if the codes are locked in some packaged or zipped 
>> form and someone reverse-engineer it. It is legally as different as if 
>> you drop money on the ground and I pick it up, to pick-pocketing you 
>> and take the money.
>>
>> Nobody seems to be able to understand this simple logic.
> 
> 
> So you're saying that reverse engineering Java bytecode is illegal, 
> while doing the same with Python bytecode is not?  Or something like 
> that?  (And you're a lawyer, right?  Because if you're not, and you're 
> not citing your sources, why is it we should put any value in these 
> comments about what is (legally) true?)
> 
> -Peter

I am not saying reverse engineering Python bytecodes is legal while 
reverse engineering Java bytecodes is illegal. Please do not put words 
into my mouth, I am just saying "codes locked in some packaged or zipped 
form", reverse engineering is illegal unless specifically approved, be 
it Python bytecodes, Java bytecodes, Smalltalk, compiled executables etc 
etc... AND THIS HAD BEEN DISCUSSED IN OTHER THREADS, like in "bytecode 
non-backcompatibility" in April 2005 of python-list.

I am not a lawyer. Based on what I've read and seen, I won't try it. 
Below is an example of such articles by a law firm, citating case laws. 
Please google the term "reverse engineering computer sources" and you 
will find heaps of materials. You might like to test the depth of your 
pockets in courtroom, be my guest


 From http://www.jenkins-ip.com/serv/serv_6.htm

COMPUTER PROGRAMS

In the case of computer programs, the EU directive states (11) that the 
ideas and principles underlying a program are not protected by 
copyright, and that (12) logic, algorithms and programming languages may 
to some extent comprise ideas and principles.

Analysis of the function of a program (but not decompilation (13))is 
permitted under Article 5.3, if it is carried out by a licensed user in 
the normal use of the program.

Reverse engineering is allowed under Article 6, but only for the single 
purpose of producing an interoperable program (rather than a competing 
program).

For this purpose, in addition to reverse engineering itself (i.e. 
producing a high level version of the code) subsequent forward 
engineering to produce the interoperable program is permitted.

However, the reverse engineer has to cross a host of formidable barriers 
before he can make use of this right;

    1. It must be indispensable to reverse engineer to obtain the 
necessary information.
    2. The reverse engineering has to be by a licensee or authorised user.
    3. The necessary information must not already have been readily 
available to those people.
    4. Only the parts of the program necessary for interoperability 
(i.e. the interfaces) can be reproduced.
    5. The information generated by the reverse engineering cannot be 
used for anything other than achieving interoperability of an 
independently created program.
    6. The information cannot be passed on to others except where 
necessary for this purpose.
    7. The information obtained cannot be used to make a competing 
program (rather than just an interoperable one).
    8. The "legitimate interests" of the copyright owner or "normal 
exploitation" of the program must not be prejudice.

Thus, far from creating a general right to reverse engineer, these 
provisions create only the smallest of openings for the reverse 
engineer; they are intended for use only to defeat locked, confidential, 
proprietary interfaces.


(11) Council Directive 96/9/EC 11 March 1996; enacted in the UK as S.I. 
1997 No. 3032 13th recital
(12) 14th recital
(13) See, for example, Copyright, Designs and Patent Act 1988, Section 
29(4)

  SEGA ENTERPRISES LTD v. ACCOLADE INC 977 F.2D 1510 (9TH CIR. 1992)

This US software copyright case concerned Sega's video game console and 
cartridges. The cartridges had a 20-25 byte code segment which was 
interrogated by the console, as a security measure.

Accolade disassembled the code which was common to three different Sega 
games cartridges, to find the security segment, and included it in 
competing games cartridges.

The Ninth Circuit held this disassembly to be a permitted "fair use" of 
the copyright in the games programs.

ATARI v. NINTENDO 975 F.2D 872 (FED. CIR. 1992)

This US software copyright case concerned Nintendo?s NES video game 
console and cartridges. The cartridges contained a microprocessor, and 
program code, and was interrogated by the console microprocessor, as a 
security measure, like the Sega system. The security was potentially a 
two-way process, with the console checking for a valid cartridge and the 
potential for the cartridge to check for a valid console (which Nintendo 
did not actually do).

Atari disassembled the program code which performed the security 
signalling exchange (the interface code). However, they also had access 
to a copy of the source code from the US Copyright Registry, to obtain 
which they stated (untruthfully) that it was for the purposes of litigation.

They implemented the signalling exchange to validate the cartridge, thus 
achieving compatibility of their cartridges with Nintendo consoles. 
However, they went further and implemented the rest of the interface, to 
validate the consoles, apparently in case Nintendo changed their product 
in future. In each case, they copied some actual code, allegedly only to 
the extent necessary.

The Court held that the intermediate copying during reverse engineering 
was legitimate, as "fair use". However, Atari infringed copyright 
nonetheless, in going too far in copying beyond what was strictly 
necessary. The programmer apparently also had sight of the source code 
from the US Copyright Registry, casting some doubt on whether the 
copying was solely due to the reverse engineering operation.

Finally, Nintendo had a patent on the interface, and Atari were found to 
infringe that too.

AUTODESK INC v. DYASON [1992] RPC 575 & (NO. 2) [1993] 12 RPC 259

This Australian software copyright case concerned a CAD package, which 
was supplied with a hardware device containing an EPROM, called the 
AutoCAD lock, which operated with part of the package called the 
"Widget-C" program. The program sent a challenge signal to the lock, 
which replied with a return signal. The program checked the return 
signal against a lookup table. The lookup table comprised 16 bytes of a 
30kByte program. An encrypted form of the lookup table was held in the 
lock EPROM.

The Defendant studied the signals with an oscilloscope, and read them. 
Apparently, the correct contents of the EPROM were deduced from this 
functional analysis, without reading of the EPROM. They then produced an 
alternative lock device. The Plaintiff alleged that the table was a 
substantial part of the program, and that the program had thus been copied.

The Court held that the table was a substantial part of the program (an 
issue of importance rather than size) and that it had been copied, and 
that this was an infringement. A move to re-hear the case, on the basis 
that the Court had misunderstood, was dismissed (with dissenting 
judgements).

POWERFLEX SERVICES PTY LTD v. DATA ACCESS CORP [1997] 12 EIPR 732

This Australian software copyright case concerned a database management 
system (Dataflex) which was "cloned" by the Defendant. Apparently, 
although the Court referred to reverse engineering, the Defendant did 
not actually analyse the code by decompilation or disassembly, but read 
the manual to produce a lookalike using the same commands and file 
structures. All this was held not to infringe.

However, Dataflex used compression of records, using a stored table of 
Huffman codes to compress and decompress. The table thus constituted an 
interface between the program and the files. There is no indication that 
the files were to be shared with other programs, so the table was not an 
interface to non-competing interoperable programs. The Defendant wanted 
his program to be able to read files created by Dataflex and so he 
calculated the required compression table, apparently from inspection of 
stored records, which therefore reproduced that of Dataflex.

It was held that although the table was not a substantial part of the 
program (or even part of the program at all), it attracted literary 
copyright as a compilation in its own right, and that copyright was held 
infringed.

CREATIVE TECHNOLOGY LTD v. AZTECH SYSTEMS PTE LTD [1997] FSR 491

This Singapore software copyright case concerned the Sound Blaster PC 
Sound Card It contained firmware, and was supplied with an ancillary PC 
program to operate with it. The Defendants wanted to produce a sound 
card which could interoperate with PC programs which would operate with 
the Sound Blaster ? in other words, to create a competing substitute. 
They bought and studied a Sound Blaster and ancillary program. They were 
held (on the balance of probabilities) to have disassembled and reverse 
engineered the firmware, and admitted running the ancillary program 
(which they pleaded as a "fair dealing"). In their product, only about 
4% of the code was identical to that of the Sound Blaster firmware, but 
that 4% included redundancies and errors present in the original, 
suggesting copying (going beyond that which is necessary).

The Court held (reversing the first instance) that although the ultimate 
products did not involve a substantial reproduction of the original 
program, there was clear evidence that reverse engineering had been used 
and hence that an intermediate copy had been made. This and the admitted 
copying (in unlicensed use) of the ancillary program were both not "fair 
dealing", and hence infringed.


From dalke at dalkescientific.com  Sun May  1 16:00:19 2005
From: dalke at dalkescientific.com (Andrew Dalke)
Date: Sun, 01 May 2005 20:00:19 GMT
Subject: Wrapping c functions
References: <mailman.84.1114976926.14961.python-list@python.org>
Message-ID: <pan.2005.05.01.20.00.19.872272@dalkescientific.com>

Glenn Pierce wrote:
>         if (!PyArg_ParseTuple(args, "isi", &format, filename, &flags))
>             return NULL;

Shouldn't that be &filename ?  See
  http://docs.python.org/ext/parseTuple.html
for examples.


>         dib = FreeImage_Load(format, filename, flags);

> Also I have little Idea what to return from the function. FIBITMAP * is
> an opaque pointer
> that I pass to other FreeImage functions, I pretty certain
> Py_BuildValue("o", dib) is wrong.

If it's truly opaque and you trust your use of the code you can
cast it to an integer, use the integer in the Python code, and
at the Python/C interface cast the integer back to a pointer.
Of course if it no longer exists you'll get a segfault.

If you want more type safety you can use the SWIG approach and
encode the pointers as a string, with type information and
pointer included.

Or use the Python extension API to make a new type.

Searching the archives I see people have tried to write a Python/
FreeImage interface using SWIG.


				Andrew
				dalke at dalkescientific.com



From Scott.Daniels at Acm.Org  Mon May  2 18:08:41 2005
From: Scott.Daniels at Acm.Org (Scott David Daniels)
Date: Mon, 02 May 2005 15:08:41 -0700
Subject: Can't get compression in Python zip script.
In-Reply-To: <mailman.48.1115065808.6583.python-list@python.org>
References: <d55b11+flng@eGroups.com><mailman.34.1115045555.6583.python-list@python.org>	<1115065046.071440.62630@z14g2000cwz.googlegroups.com>
	<mailman.48.1115065808.6583.python-list@python.org>
Message-ID: <42769eec$1@nntp0.pdx.net>

Fredrik Lundh wrote:
> M.E.Farmer wrote:
> 
>>I saw compression=0 and assumed that 1 would mean true, but no!
>>zipfile.ZIP_DEFLATED = 8, defies logic, it is the only compression type
>>why not accept any non zero as compression.
> 
> "is the only compression type" ?  quoting from the ZIP specification:
> 
>      compression method: (2 bytes)
>           (see accompanying documentation for algorithm descriptions)
>           0 - The file is stored (no compression)
>           1 - The file is Shrunk
...
>           8 - The file is Deflated
>           9 - Enhanced Deflating using Deflate64(tm)
>          10 - PKWARE Data Compression Library Imploding
>          11 - Reserved by PKWARE
>          12 - File is compressed using BZIP2 algorithm
> ( http://www.pkware.com/company/standards/appnote/appnote.txt )
> the current zipfile version only supports 0 and 8, but that doesn't mean that
> future versions won't support other ZIP compressions.
> 
For example, I am hoping I'll get method 12 into Python 2.5.  Please
don't use the unadorned numbers, however.  Use zipfile.ZIP_STORE,
zipfile.ZIP_DEFLATED, and (later) zipfile.ZIP_BZIP2.  This way you can
catch an exception when using an unimplemented compression format as
you retrieve the compression code, rather than waiting to get into the
midst of compression / decompression before getting a failure.

--Scott David Daniels
Scott.Daniels at Acm.Org


From jeffelkins at earthlink.net  Sat May  7 10:00:52 2005
From: jeffelkins at earthlink.net (jeff elkins)
Date: Sat, 7 May 2005 14:00:52 +0000
Subject: Newbie: saving dialog variables
In-Reply-To: <200505071324.34765.jeffelkins@earthlink.net>
References: <200505071324.34765.jeffelkins@earthlink.net>
Message-ID: <200505071400.52241.jeffelkins@earthlink.net>

On Saturday 07 May 2005 01:24 pm, jeff elkins wrote:
> Howdy,
>
> I've written a program that calls an imported dialog to gather some needed
> input. What's the common method for passing that data back to the caller?
> I've tried a 'return data' prior to self.Close() ... all that happens then
> is the dialog won't close. I'm sure this is obvious, but this newbie's
> stuck!
>
> Thanks,
>
> Jeff

If it makes any difference, the data is contained in an array...

Thanks again,

Jeff



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From eric_brunel at despammed.com  Mon May 30 04:17:51 2005
From: eric_brunel at despammed.com (Eric Brunel)
Date: Mon, 30 May 2005 10:17:51 +0200
Subject: Tkinter slowes down
References: <d79a1v$15j4$1@ns.felk.cvut.cz>
	<mailman.212.1117287190.18027.python-list@python.org>
	<d7a5pr$1lc0$1@ns.felk.cvut.cz>
Message-ID: <opsrkxb1idrqur0o@eb.pragmadev>

On Sat, 28 May 2005 18:21:46 +0200, pavel.kosina <geon at post.cz> wrote:

> Fredrik Lundh napsal(a):
>> when you add an item to the canvas, it's part of the canvas
>> until you remove it.  if performance drops, it's usually because
>> you keep adding new items without removing the old ones.
>>
>> try adding a w.delete(ALL) call before you "repaint".

I noticed once that if this actually deletes all canvas items, it does not delete the bindings on them: every binding put on a canvas item registers a Python callable at tcl level, but does not associate it with the item. So deleting the item keeps the binding even if it cannot be called anymore. If you have many items with several bindings, this can cause the memory usage to grow up and slow down the canvas.

> In the meantime I found that widget.destroy() works well, too (before
> "repainting").

This was the only solution I found using "regular" Tkinter widgets when there are bindings on canvas items. I tried to find another solution by modifying Tkinter.py, but the problem is much harder than it seems, since many things happen at tcl level. However, I didn't investigate the WCK.

HTH
-- 
python -c "print ''.join([chr(154 - ord(c)) for c in 'U(17zX(%,5.zmz5(17;8(%,5.Z65\\'*9--56l7+-'])"


From h_stovold at hotmail.com  Tue May  3 11:04:25 2005
From: h_stovold at hotmail.com (Heather Stovold)
Date: Tue, 3 May 2005 10:04:25 -0500
Subject: So many things that need to be decided....
References: <G3Ade.1022$fF6.12717@news1.mts.net>
	<d56nen$m7c$1@domitilla.aioe.org>
Message-ID: <FuMde.1077$fF6.14053@news1.mts.net>

> I really don't see why you should lay everything in stone before you
> start. Things may or may not fall into place. Worry about it when it
> worries you.
>

Well, my program is going to require all these things.  Information required
to even build the screen is being stored in the database.  (That is,
information about the program is going to be in a database, not just the
user data) - so I need to determine the database.  It is a GUI program - so
I need some sort of ability to program a GUI interface, etc....

Thanks






From sjmachin at lexicon.net  Tue May 17 19:20:03 2005
From: sjmachin at lexicon.net (John Machin)
Date: Wed, 18 May 2005 09:20:03 +1000
Subject: Parsing text into dates?
References: <1116277171.492587.38080@g47g2000cwa.googlegroups.com>
	<8664xh8r4j.fsf@guru.mired.org>
Message-ID: <u1uk81hqt8891bpmsapakoqah4u7h1ni36@4ax.com>

On Tue, 17 May 2005 16:44:12 -0500, Mike Meyer <mwm at mired.org> wrote:

>"Thomas W" <thomas.weholt at gmail.com> writes:
>
>> I'm developing a web-application where the user sometimes has to enter
>> dates in plain text, allthough a format may be provided to give clues.
>> On the server side this piece of text has to be parsed into a datetime
>> python-object. Does anybody have any pointers on this?
>
>Why are you making it possible for the users to screw this up? Don't
>give them a text widget to fill in and you have to figure out what the
>format is, give them three widgets so you *know* what's what.
>
>In doing that, you can also go to dropdown widgets for month, with
>month names (in a locale appropriate for the page language), and for
>the days in the month. 

My experience: drop-down lists generate off-by-one errors. They also
annoy the bejaysus out of users -- e.g. year of birth, a 60+ element
list. It's quite possible of course that YMMV :-)

BTW: I have seen a web page with a drop-down list for year of birth
where the first 18 entries were <current year>, <current year - 1>,
etc for a transaction that wasn't for minors.






From steven.bethard at gmail.com  Sun May 22 18:43:45 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Sun, 22 May 2005 16:43:45 -0600
Subject: passing arguments
In-Reply-To: <mailman.0.1116792807.18027.python-list@python.org>
References: <200505201826.09939.jeffelkins@earthlink.net>	<mailman.266.1116629225.8733.python-list@python.org>	<mIOdnbfCkYmuDBPfRVn-vA@comcast.com>
	<mailman.0.1116792807.18027.python-list@python.org>
Message-ID: <3uCdnYdZY9K8lgzfRVn-3g@comcast.com>

Steve Holden wrote:
> Steven Bethard wrote:
>>
>> Also possible, to guarantee that exactly one argument was given:
>>
>> try:
>>    arg1, = sys.argv
>> except ValueError:
>>    print "This script takes an argument, you boob!"
>>    sys.exit(1)
>>
> Aren't we forgetting argv[0] here

Oops.  Yup.  Change all "sys.argv" to "sys.argv[1:]".  Sorry, I never 
use sys.argv directly anymore; I always get my argv through optparse, 
which kindly strips off sys.argv[0].  Good catch, thanks!

STeVe


From harlinseritt at yahoo.com  Mon May  2 17:58:11 2005
From: harlinseritt at yahoo.com (Harlin Seritt)
Date: 2 May 2005 14:58:11 -0700
Subject: Quick and dirty dialogs?
In-Reply-To: <1115069439.089372.281540@l41g2000cwc.googlegroups.com>
References: <mailman.42.1115059895.6583.python-list@python.org>
	<1115060674.394516.82000@o13g2000cwo.googlegroups.com>
	<1115069439.089372.281540@l41g2000cwc.googlegroups.com>
Message-ID: <1115071091.937804.320700@g14g2000cwa.googlegroups.com>

Try EasyDialog:
http://www.talkaboutprogramming.com/group/comp.lang.python/messages/314003.html

It should also be on Vaults of Parnassus.



From ramen at lackingtalent.com  Fri May  6 15:42:59 2005
From: ramen at lackingtalent.com (Dave Benjamin)
Date: Fri, 06 May 2005 12:42:59 -0700
Subject: win32: structured storage
In-Reply-To: <EHPee.15132$gc6.9408@okepread04>
References: <HxBee.23620$R46.6537@tornado.socal.rr.com>
	<mailman.92.1115378692.29826.python-list@python.org>
	<EHPee.15132$gc6.9408@okepread04>
Message-ID: <YOPee.15167$gc6.9666@okepread04>

Dave Benjamin wrote:
> Steve Holden wrote:
> 
>> tlviewer wrote:
>>
>>  > CHM is supposed to be structured storage (ITSF). If a given CHM
>>  > file is infected it most likely has an embedded EXE file -- mine
>>  > had one called [Open.exe].
>>  >
>> Ironic, really, since Microsoft insist that the browser must be 
>> fully-integrated with the operating system I suppose that measn we had 
>> better all start using Linux.
> 
> Even more ironically, it would seem that in effort to kill Netscape they 
> are killing Windows.

Or perhaps I'm just restating your point. ;)


From atabhcy at yahoo.com  Tue May 17 17:13:24 2005
From: atabhcy at yahoo.com (atabhcy at yahoo.com)
Date: 17 May 2005 14:13:24 -0700
Subject: command to update a web page
Message-ID: <1116364404.542712.273200@g44g2000cwa.googlegroups.com>

Hello All,
I have a python script which sends out email once a particular
condition is met. Now I want to extend the functionality and make this
script update a php web page with the same contents as those of the
emails it sends out.
What module /commands can help me acheive this?
Thanks.



From sxanth at ceid.upatras.gr  Tue May 10 05:26:09 2005
From: sxanth at ceid.upatras.gr (Stelios Xanthakis)
Date: Tue, 10 May 2005 12:26:09 +0300
Subject: pyvm -- faster python
In-Reply-To: <1115573660.381851.297130@g14g2000cwa.googlegroups.com>
References: <mailman.164.1115548611.29826.python-list@python.org>
	<1115561483.741761.212140@f14g2000cwb.googlegroups.com>
	<1115573660.381851.297130@g14g2000cwa.googlegroups.com>
Message-ID: <42807E31.8020905@ceid.upatras.gr>

bearophileHUGS at lycos.com wrote:

> This project is probably a LOT of work; maybe people can tell us about
> such efforts *before* doing so much work, so we can discuss it, and
> avoid wasting time.
> 

It is a lot of work indeed.
Usually, when people announce "we shall create X", it doesn't happen.
And you don't know if you can do it at all *before*.


> Maybe you can explain us why it is so fast, and/or maybe you can work
> with the other developers to improve the speed of the normal CPython,
> this can require equal or less work for you, and it can produce more
> long-lasting results/consequences for your work.
> 

The reason is that it's built from the scratch.
Guido would disagree with that, see py-dev thread:

http://www.mail-archive.com/python-dev at python.org/msg01225.html


There *are* alternative ways to do some things in the vm and Joel
is simply wrong:)
Could this be .... Python 3000!!!? :)


Stelios


From bpeng at rice.edu  Wed May  4 09:15:16 2005
From: bpeng at rice.edu (Bo Peng)
Date: Wed, 04 May 2005 08:15:16 -0500
Subject: control precision for str(obj) output?
In-Reply-To: <1115186175.778899.48610@f14g2000cwb.googlegroups.com>
References: <d598rq$8fj$1@joe.rice.edu><864qdj90vd.fsf@guru.mired.org>
	<pan.2005.05.04.05.26.11.56711@dalkescientific.com>
	<1115186175.778899.48610@f14g2000cwb.googlegroups.com>
Message-ID: <d5aht4$89b$1@joe.rice.edu>

Dan Bishop wrote:
> Andrew Dalke wrote:
> 
>>Mike Meyer wrote:
>>
>>>Someone want to tell me the procedure for submitting FAQ entries,
> 
> so I
> 
>>>can do that for this?
>>
>>You mean more than what already exists at
>>
> 
> http://www.python.org/doc/faq/general.html#why-are-floating-point-calculations-so-inaccurate
> 
>>which has a link to an even more detailed chapter in the tutorial at
>>  http://docs.python.org/tut/node16.html
> 
> 
> Yes.  Those pages explain why repr(0.2) != '0.2', but they don't
> explain why str([x]) != '[%s]' % x .
> 

I am new to Python but has experience with other languages. I am quite 
aware of 'why-are-floating-point-calculations-so-inaccurate'. I would 
not be surprised if

 >>> str[0.0002)
0.000200000000001
 >>> str([0.0002])
[0.000200000000001]

It was the difference between str([x]) and '[%s]' % x str(x) that 
confused me.

Bo


From agriff at tin.it  Tue May  3 14:18:03 2005
From: agriff at tin.it (Andrea Griffini)
Date: Tue, 03 May 2005 18:18:03 GMT
Subject: empty lists vs empty generators
References: <509534af.0505021514.5e49aa2@posting.google.com>
	<1115095773.279907.242530@g14g2000cwa.googlegroups.com>
Message-ID: <8kff71pn27452pkhsthlad49qkg6jtp08v@4ax.com>

On 2 May 2005 21:49:33 -0700, "Michele Simionato"
<michele.simionato at gmail.com> wrote:

>Starting from Python 2.4 we have tee in the itertools
>module, so you can define the following:
>
>from itertools import tee
>
>def is_empty(it):
>    it_copy = tee(it)[1]
>    try:
>        it_copy.next()
>    except StopIteration:
>        return True
>    else:
>        return False
>
>It works with generic iterables too.

Are you sure this is going to do the right thing ?
seems to me it would drop the first element of
"it"... (the yielded element entered the tee twins,
but already got out of "it").
I would say that unless you use the second twin
after calling is_empty that code wouldn't work...

Am I correct or instead "tee" uses black magic to
just peek at the yielded value without starting a
continuation ?

Andrea


From tiissa at nonfree.fr  Sun May 29 17:46:27 2005
From: tiissa at nonfree.fr (tiissa)
Date: Sun, 29 May 2005 23:46:27 +0200
Subject: finding indices in a sequence of parentheses
In-Reply-To: <u_KdneJ4tt9QuwffRVn-tg@comcast.com>
References: <u_KdneJ4tt9QuwffRVn-tg@comcast.com>
Message-ID: <429a382d$0$15392$626a14ce@news.free.fr>

Steven Bethard wrote:
> (2) Does anyone see an easier/clearer/simpler[1] way of doing this?

I'd personnally extract the parenthesis then zip the lists of indices.
In short:

  >>> def indices(mylist):
  ...     lopen=reduce(list.__add__, [[i]*s.count('(') for i,s in 
enumerate(mylist)],[])
  ...     lclose=reduce(list.__add__, [[i]*s.count(')') for i,s in 
enumerate(mylist)],[])
  ...     return zip(lopen,lclose)
  ...
  >>> indices(lst)
  [(2, 2), (4, 7), (6, 7), (8, 9), (8, 10)]
  >>>

Before returning, you can check if the lists have same size and if the 
'(' has lower or equal index than ')' in each of these couples. If not 
you can raise the appropriate exception.

Disclaimer: not tested further than example above (but confident).


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From: geile-andrea at freenet.de (Andrea)
Date: Mon, 23 May 2005 19:25:33 +0100
Subject: PORNO SEX PICS
Message-ID: <DDAC168FB5C09749AD96D27804CA35D105FDA7E1@SETUBAL>

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From teamuhlig at gmail.com  Wed May 18 14:51:16 2005
From: teamuhlig at gmail.com (john67)
Date: 18 May 2005 11:51:16 -0700
Subject: Is Python suitable for a huge, enterprise size app?
In-Reply-To: <jmbsl2-opn.ln1@lairds.us>
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>
	<jmbsl2-opn.ln1@lairds.us>
Message-ID: <1116442276.918194.194110@g44g2000cwa.googlegroups.com>

LOL!  That is really funny, in a dark humor kind of way.  I don't want
the project to fail either.  I am not convinced that we will succeed if
we go the Java route.  However, I am just a grunt in the chain and not
in a position to make the decision.  I hope I can have some influence
on the decision though.  I will be pleased if I can get someone to at
least seriously consider Python.

I understand your sentiment about not encouraging something that might
fail to be done in Python.  Hopefully it won't come to that.  Thanks
for the info on Phaseit apps.

John



From cam.ac.uk at mh391.invalid  Sun May  1 19:52:25 2005
From: cam.ac.uk at mh391.invalid (Michael Hoffman)
Date: Mon, 02 May 2005 00:52:25 +0100
Subject: python and os.system() failure
In-Reply-To: <mailman.48.1114820047.14961.python-list@python.org>
References: <mailman.48.1114820047.14961.python-list@python.org>
Message-ID: <d53q3v$big$1@gemini.csx.cam.ac.uk>

kennywiggin wrote:

> .flac: ERROR while decoding data
> state = FLAC__STREAM_DECODER_READ_FRAME
> 
> The script fails to decode any more flac files until the vm
> crashes from having too many open files.

Whoa! Time to start using file.close() after you're done with each
file.

If that doesn't fix your problem (perhaps you are running out of file 
handles?), I'd run strace on the flac invocation and see how a good one 
differs from a bad one.
-- 
Michael Hoffman


From mkent at webmd.net  Fri May 27 16:27:17 2005
From: mkent at webmd.net (mkent at webmd.net)
Date: 27 May 2005 13:27:17 -0700
Subject: Problem: using signal.alarm() to stop a run-away os.system()
	command
References: <mailman.198.1117222967.18027.python-list@python.org>
Message-ID: <1117225637.482415.315040@f14g2000cwb.googlegroups.com>

Thanks, that's the kind of on-target info I needed.  Now, shouldn't
there be some kind of mention of this limitation in the docs?



From cjbottaro at alumni.cs.utexas.edu  Wed May 11 15:41:03 2005
From: cjbottaro at alumni.cs.utexas.edu (Christopher J. Bottaro)
Date: Wed, 11 May 2005 14:41:03 -0500
Subject: Python Documentation (should be better?)
References: <mailman.389.1115837608.29826.python-list@python.org>
	<1115839271.271071.32710@z14g2000cwz.googlegroups.com>
Message-ID: <d5tmm2$u1l$1@sea.gmane.org>

hugonz at gmail.com wrote:

> I think Python's doc really rock. It's odd, why do you refer to the
> tutorial when the lib API is what I'd consider "the docs".

I guess I mean Python needs a manual, which is basically what the tutorial
serves as, but its not comprehensive and organized like how (I think) a
manual should be.



From dformosa at dformosa.zeta.org.au  Wed May 25 19:32:22 2005
From: dformosa at dformosa.zeta.org.au (David Formosa (aka ? the Platypus))
Date: Wed, 25 May 2005 23:32:22 GMT
Subject: What are OOP's Jargons and Complexities?
References: <1116843761.619249.144790@g47g2000cwa.googlegroups.com>
	<bAske.14563$yx.14338@fe08.lga> <3584469.Aerji1NdQr@yahoo.com>
	<qEuke.24657$NZ1.533@fe09.lga>
	<slrnd95l5i.r5.tassilo.von.parseval@localhost.localdomain>
Message-ID: <slrnd9a23c.4ns.dformosa@dformosa.zeta.org.au>

On Tue, 24 May 2005 09:16:02 +0200, Tassilo v. Parseval
<tassilo.von.parseval at rwth-aachen.de> wrote: 
> Also sprach John W. Kennedy:
[...]

> Most often, languages with strong typing can be found on the functional
> front (such as ML and Haskell). These languages have a dynamic typing
> system. I haven't yet come across a language that is both statically and
> strongly typed, in the strictest sense of the words. I wonder whether
> such a language would be usable at all.

Modula2 claims to be both statically typed and strongly typed.  And
your wonder at its usablity is justified.

-- 
Please excuse my spelling as I suffer from agraphia. See
http://dformosa.zeta.org.au/~dformosa/Spelling.html to find out more.
Free the Memes.


From cjw at sympatico.ca  Thu May 12 14:39:26 2005
From: cjw at sympatico.ca (Colin J. Williams)
Date: Thu, 12 May 2005 14:39:26 -0400
Subject: working directory for debugging in pythonwin
In-Reply-To: <3eem0kF2ngvjU1@individual.net>
References: <3eem0kF2ngvjU1@individual.net>
Message-ID: <4283A2DE.7030503@sympatico.ca>

Thomas Pfaff wrote:
> Hello all,
> 
> I started using the nice Pythonwin IDE together with Python 2.3 (I have
> come to prefer its editor to IDLE).
> My problem is, that when I want to run a script in the debugger, I can
> give the script name and arguments, but I can't tell it in which
> directory it should run.
> 
> I googled this group but didn't find anything helpful so far.
> 
> I could use some os.chdir in my code, but that's ugly and I neither want
> to copy the script around to the places where I would like to test it.
> 
> Any suggestions?
> 
> Thanks in advance
> 
> 
> Thomas
Thomas,

When you have initiated PythonWin, try opening (^O) the file you wish to 
debug.  By selecting the file directory and file you have chosen the 
current working directory for the file.

Alternatively, in the Windows Explorer, try right clicking on the py 
file you wish to debug.  One of the options given is likely to be PythonWin.

Colin W.


From ville at spammers.com  Wed May 11 02:02:57 2005
From: ville at spammers.com (Ville Vainio)
Date: 11 May 2005 09:02:57 +0300
Subject: Solipsis: Python-powered Metaverse
References: <d5qqo7$3dc$1@sea.gmane.org> <4280F03E.2070903@kzoo.edu>
	<mailman.323.1115778422.29826.python-list@python.org>
Message-ID: <du7u0lacnam.fsf@mozart.cc.tut.fi>

>>>>> "Paul" == Paul McNett <p at ulmcnett.com> writes:

    Paul> Only, I couldn't hear what they said back to me because I
    Paul> don't have UDP port 6000 open on my firewall and forwarding
    Paul> to my laptop (and don't want to do that either).

    Paul> It is a shame: peer to peer has the potential to enable
    Paul> really cool, imaginative multiuser worlds, but how many
    Paul> people are connecting directly to the internet these days?

FWIW, In Finland all home *DSL and Cable internet connections (that I
know of) are connected "directly" to the internet (in the sense that
all ports are open). Blocking is reserved for the modem, just the way
it should be...

-- 
Ville Vainio   http://tinyurl.com/2prnb


From xah at xahlee.org  Wed May 25 02:42:21 2005
From: xah at xahlee.org (Xah Lee)
Date: 24 May 2005 23:42:21 -0700
Subject: What are OOP's Jargons and Complexities?
In-Reply-To: <1116843761.619249.144790@g47g2000cwa.googlegroups.com>
References: <1116843761.619249.144790@g47g2000cwa.googlegroups.com>
Message-ID: <1117003340.900449.124180@o13g2000cwo.googlegroups.com>

The Rise of ?Static? versus ?Instance? variables

In a normal programing language, variables inside functions are used by
the function, called local variables.

In OOP paradigm, as we've seen, super-subroutines (classes) are
assigned to variables (instantiation), and the inner-subroutines
(methods) are called thru the variables (objects). Because of this
mechanism, what's once known as local variables (class variables) can
now also be accessed thru the assigned variable (objet) by design. In
OOP parlance, this is to say that a class's variables can be accessed
thru the object reference, such as in myObject.data=4. For example:
mySurface = new a_surface();
mySurface.coordinatesList={...} // assign initial coordinates

However, sometimes a programmer only needs a collection of variables.
For exmple, a list of colors:
black = "#000000";
gray = "#808080";
green = "#008000";

In pure OOP, data as these now come with a subroutine (class) wrapper:
class listOfColors() {
  black = "#000000";
  gray = "#808080";
  green = "#008000";
}

Now to access these values, normally one needs to assign this
subroutine (class) to a variable (instantiation) as to create a object:
myColors = new listOfColors(); // instantiation! (creating a "object")
newColor = myColors.black;

As a workaround of this extraneous step is the birth of the concept of
?static? variables. (with the keyword ?static? in Java) When a
variable is declared static, that variable can be accessed without
needing to instantiate its class. Example:
class listOfColors() {
  static black = "#000000";
  static gray = "#808080";
  static green = "#008000";
}
newColor = listOfColors.black;   // no instantiation required

The issue of staticality is also applicable to inner-subroutines
(methods). For example, if you are writing a collection of math
functions such as Sine, Cosine, Tangent... etc, you don't really want
to create a instance in order to use. Example:
class mathFunctions() {
  static sin (x) {...};         // a static method
  ...
}
print mathFunctions.sin(1);  // no need to create object before use


The non-static variant of variables and methods are called ?instance
variables? or ?instance methods?, or collectively ?instance
members?. Note that static members and instance members are very
different. With static members, variables and methods can be called
without creating a object. But more subtly, for a static variable,
there is just one copy of the variable; for instance variables, each
object maintains its own copy of the variable. A class can declare just
some variables static. So, when multiple objects are created from the
class, some variables will share values while others having independent
copies. For example:
class a_surface() {
  static pi;                     // a static variable
  coordinatesList;               // a instance variable
  ...
};
a_surface.pi=3.1415926;          // assign value of pi for all
a_surface objects
mySurface1 = new a_surface();
mySurface1.coordinatesList={...} // assign coordinates to one a_surface
object
mySurface2 = new a_surface();
mySurface2.coordinatesList={...} // assign coordinates to another
a_surface object

The issues of static versus instance members, is one complexity arising
out of OOP.

----------
to be continued tomorrow.

This is part of an installment of the article
?What are OOP's Jargons and Complexities?
by Xah Lee, 20050128. The full text is at
 http://xahlee.org/Periodic_dosage_dir/t2/oop.html

? Copyright 2005 by Xah Lee. Verbatim duplication of the complete
article for non-profit purposes is granted.

The article is published in the following newsgroups:
comp.lang.c,comp.lang.c++,comp.lang.lisp,comp.unix.programmer
comp.lang.python,comp.lang.perl.misc,comp.lang.scheme,comp.lang.java.programmer
comp.lang.functional,comp.object,comp.software-eng,comp.software.patterns

 Xah
 xah at xahlee.org
? http://xahlee.org/



From magicmas at spymac.com  Sun May 29 04:02:25 2005
From: magicmas at spymac.com (cheng)
Date: 29 May 2005 01:02:25 -0700
Subject: need help of RE
In-Reply-To: <mailman.230.1117353059.18027.python-list@python.org>
References: <1117352350.179209.206930@z14g2000cwz.googlegroups.com>
	<mailman.230.1117353059.18027.python-list@python.org>
Message-ID: <1117353745.448189.156280@g47g2000cwa.googlegroups.com>

i try

query = query.lower()
print re.split(r'\W+',theString)

the reslut is :
['', 'word1', 'word2', 'word3', '']

how can i fix the statment to get 

['word1', 'word2', 'word3']



From p at ulmcnett.com  Wed May 11 11:12:18 2005
From: p at ulmcnett.com (Paul McNett)
Date: Wed, 11 May 2005 08:12:18 -0700
Subject: Solipsis: Python-powered Metaverse
In-Reply-To: <du7u0lacnam.fsf@mozart.cc.tut.fi>
References: <d5qqo7$3dc$1@sea.gmane.org>
	<4280F03E.2070903@kzoo.edu>	<mailman.323.1115778422.29826.python-list@python.org>
	<du7u0lacnam.fsf@mozart.cc.tut.fi>
Message-ID: <428220D2.5070701@ulmcnett.com>

Ville Vainio wrote:
>>>>>>"Paul" == Paul McNett <p at ulmcnett.com> writes:
> 
> 
>     Paul> Only, I couldn't hear what they said back to me because I
>     Paul> don't have UDP port 6000 open on my firewall and forwarding
>     Paul> to my laptop (and don't want to do that either).
> 
>     Paul> It is a shame: peer to peer has the potential to enable
>     Paul> really cool, imaginative multiuser worlds, but how many
>     Paul> people are connecting directly to the internet these days?
> 
> FWIW, In Finland all home *DSL and Cable internet connections (that I
> know of) are connected "directly" to the internet (in the sense that
> all ports are open). Blocking is reserved for the modem, just the way
> it should be...

Sure, that's how it is here in the US too. You have a modem/router
supplied by the cable or DSL company that provides DHCP and NAT for
outbound traffic. The fact that the internal computers have private
addresses (eg 192.168.1.5) keeps them from being accessed directly from
the outside. The modem still gets access to all ports[1], and most have
ways to set up simple "port forwarding" to, say, listen for UDP traffic
on port 6000 and forward it on to 192.168.1.20.

The problem is, that last step required setup by the user of one of the 
computers in the LAN. Sure, this is a home so there is likely only one 
or two computers in the LAN, but it is still a painful thing to ask 
normal users to configure their firewall, and what if both computers 
wanted to participate on the port 6000 fun?

[1] Although, some ISP's are taking it upon themselves to drop or reject 
port 25 traffic. A wrong but understandable stopgap solution to the 
problem of peoples toy machines getting infected by malware - at least 
those machines won't be able to send mailbombs anywhere else.

-- 
pkm ~ http://paulmcnett.com




From jonasmg at softhome.net  Wed May 18 06:20:15 2005
From: jonasmg at softhome.net (Jonas Melian)
Date: Wed, 18 May 2005 11:20:15 +0100
Subject: Python forum
In-Reply-To: <428A1487.9090104@pythonapocrypha.com>
References: <mailman.84.1116320178.8733.python-list@python.org>	<118k42k64ai7316@corp.supernews.com>
	<428A1487.9090104@pythonapocrypha.com>
Message-ID: <428B16DF.80902@softhome.net>

Dave Brueck wrote:
 > Amen! Generally they are an abomination.
> 
> To make matters worse, many forums that become popular are saddled with so many 
> advertisements that moving from one message to another becomes a... grueling... 
> lesson... in... patience.
> 
> -Dave

Then that hasn't happened in gentoo forums. In addition they are very
usuables

http://forums.gentoo.org/


From frankabel at tesla.cujae.edu.cu  Thu May 26 20:11:02 2005
From: frankabel at tesla.cujae.edu.cu (Frank Abel)
Date: Thu, 26 May 2005 17:11:02 -0700
Subject: concurrent access to object file
References: <002e01c55fd3$d5944790$7b0e10ac@hegel>
Message-ID: <000b01c56250$91caa610$7b0e10ac@hegel>

Hi again!

I will make the question more simple:

If two call to the "write" method of a file object "occur simultaneously "
is totally sure that the data of each call is writen successive or exist the
posibility of merge data?

where I can find information about this?

Thank in advance
Frank







From jello at comics.com  Tue May 31 13:22:29 2005
From: jello at comics.com (rzed)
Date: Tue, 31 May 2005 13:22:29 -0400
Subject: anygui,anydb, any opinions?
Message-ID: <Xns9667883C1D343jreeder@63.223.7.253>

Periodically, we see questions about which gui package is best, or 
which database package to use. These questions typically trigger 
some exchanges of opinion, though of course this no one best 
answer, and eventually things quiet down until the next round.

But it seems to me that what seldom gets asked is: why is it 
Python's concern which package to use for those purposes? It seems 
to me that a proper approach from the viewpoint of the language 
itself is to provide an interface, and for the package developers 
to provide an implementation of that interface. A Python program 
would thus address its api only, leaving it up to the package to 
interpret that properly. In the ideal world, this would mean that 
any Python program could swap the gui package (or the db package) 
without changing the logic of the program. Python-the-language 
(rather than Python-the-package) would theoretically be a more 
compact download, and the hooked-in parts could be installed 
separately.

Anygui and anydb have been attempts to reach the ideal interface 
(and there are others, I think), but each has its problems and 
neither is supported or developed as fully as the idealized 
interface would require. I don't see much evidence that the various 
packages are designed to conform to those designs (and I don't 
contend that they should be required to until and unless the 
generic interfaces are in a well-developed state). But the result 
of all this is that there continues to be confusion to newbies and 
even veterans who are new to a given area or platform. Shouldn't it 
be a priority to eliminate the source of that confusion?

Now, on the grounds that practicality beats purity, it's certainly 
reasonable to argue that the current system works better. If we 
could just jump into a state where there was a perfectly-
functioning anydb and anygui, then we'd already have been there, 
but we can't and so we won't try to go in that direction at all. 
Python-the-package marches on; it can't wait for some ideal to 
coalesce before it advances. It's hard to argue too strongly 
against that view.

Then, too, it's hard to see how an anygui or (more especially, I 
think) an anydb could possibly work in the real world. The various 
approaches to windowing and databases are too different for a 
single interface to encompass them all. Some capabilities would be 
unforeseen or ignored in any such interface. That argument carries 
a lot of force. Certainly it is true that adding parameters to a 
function call to accommodate some new feature gets real old real 
soon. But while it is a strong practical argument, it is not one 
that truly wins in the long run, I think. It is an argument in 
favor of changing the way arguments are passed, so that it becomes 
possible to handle the various pieces of information the lower-
level package needs. The interface should be agnostic as much as 
possible. The package should be able to get the information it 
needs from what is passed by the api. Both of these things must be 
true.

Back when I was programming in DEC C, I saw how their 
implementation of functions like printf departed from the C 
standard by adding optional keyword parameters. Using those 
parameters, DEC's more-sophisticated filesystem could be used 
productively without going deeply into the filesystem's api. 

Of course, a program written that way wouldn't work if transferred 
unchanged to another system, but it *could* have worked if the 
other system could also either handle the keywords (or some of 
them) or ignore them. The results may not have been exactly as 
desired, but there would have been results. Similarly, an elaborate 
call that allows access to a sophisticated gui should also produce 
results if the gui is simpler. Supposing that a given parameter 
required by the second system has not been included in the first 
place, it should be possible to add that parameter without 
affecting the first system one bit. The first one would still not 
be looking for the parameter, while the second would now find it.

That's all I'm talking about here. To be able to write a Python 
application that can ultimately be displayed using wxWidgets or Qt 
or Tkinter or Curses. Then, without having to do more than to 
change which interface package is imported, to expect to see the 
result displayed. To have it just happen, and to have expectations 
when using Python that it *will* just happen that way.

So what do you think? What's wrong with the picture? Why isn't 
there a greater priority to work in this direction?

-- 
rzed


From max2 at fisso.casa  Sat May  7 12:28:06 2005
From: max2 at fisso.casa (max(01)*)
Date: Sat, 07 May 2005 16:28:06 GMT
Subject: python and glut
In-Reply-To: <1115322846.254200.55370@f14g2000cwb.googlegroups.com>
References: <kp7ee.1331058$35.49670814@news4.tin.it>
	<1115236689.318521.111420@z14g2000cwz.googlegroups.com>
	<bmsee.1336210$35.49849772@news4.tin.it>
	<1115322846.254200.55370@f14g2000cwb.googlegroups.com>
Message-ID: <q06fe.1345165$35.50299638@news4.tin.it>

Lonnie Princehouse wrote:

> DRI not working could also be a permissions issue; check to see if it
> works as root.

that's it! :-)

now, how can i make it work as "joe user"?

bye

max


From phillip.watts at anvilcom.com  Thu May  5 15:16:34 2005
From: phillip.watts at anvilcom.com (phil)
Date: Thu, 05 May 2005 14:16:34 -0500
Subject: How to detect a double's significant digits
References: <1115314620.902071.323410@f14g2000cwb.googlegroups.com>	<mailman.59.1115316262.29826.python-list@python.org>
	<1115316826.659271.247350@o13g2000cwo.googlegroups.com>
Message-ID: <427A7112.9090808@anvilcom.com>

Bollocks, works here.

That looks like Java!!!  Aaaihh!

mrstephengross wrote:

> Ok, that won't work. First of all, str() is not a function. If I want
> to convert the float into a string, the conversion function will have
> to use some kind of numeric precision, which will screw things up.
> Consider this:
> 
> float f = 1.004;
> ostringstream s;
> s << f;
> cout << s.str();
> 
> The above code may produce "1.004", or "1.0040", or "1.00400",
> depending on the stream's precision setting. I need a way to detect the
> number of digits to the right of decimal point *prior* to doing any
> kind of string conversion.
> 
> --Steve
> 
> 





From lbates at syscononline.com  Sun May  1 09:36:42 2005
From: lbates at syscononline.com (Larry Bates)
Date: Sun, 01 May 2005 08:36:42 -0500
Subject: Running script in background.
In-Reply-To: <1114930327.902938.204630@z14g2000cwz.googlegroups.com>
References: <1114930327.902938.204630@z14g2000cwz.googlegroups.com>
Message-ID: <4274DB6A.5020906@syscononline.com>

You have two choices:

1) You can use Windows Scheduler to run the script in the
background.  I have lots of scripts that I do this with.

2) You can convert the script into a Windows Service, which
will run in the background continuously.

I know of no way to manually start something in the foreground
and have it execute in the background (unlike on Linux).

Larry Bates

Harlin Seritt wrote:
> Hi,
> 
> I have a script.py that is converted to .exe using py2exe. From another
> script I call script.exe and would like to be able to run this
> script.exe in the background (as well as in console -- giving the user
> some simple options). How can I make this happen?
> 
> thanks,
> 
> Harlin
> 


From superprad at gmail.com  Fri May 13 12:40:03 2005
From: superprad at gmail.com (superprad at gmail.com)
Date: 13 May 2005 09:40:03 -0700
Subject: create words of various lengths
Message-ID: <1116002403.374232.210220@g49g2000cwa.googlegroups.com>

"X-No-Archive: yes"

what I am looking for is

1. To create a list of different words of various lengths(1-15) using
A-Z,a-z,0-9 and punctuations.Basically anything that could be found on
a text document.

2. The words formed need not be meaningful .FOr example 'ajf' or
'fcjgdtfhbs' or even 'gfdew!' or '#bang.' would be a valid entry in the
list.

3.So I am looking for a random set of words of sizes 1 to 15.The proble
might be the time complexity. I inderstand that there would be too many
permutations.



From steve at REMOVETHIScyber.com.au  Sun May 29 09:32:47 2005
From: steve at REMOVETHIScyber.com.au (Steven D'Aprano)
Date: Sun, 29 May 2005 23:32:47 +1000
Subject: how to convert string to list or tuple
References: <d74dbl$h91$1@news.yaako.com>
Message-ID: <pan.2005.05.29.13.32.47.246073@REMOVETHIScyber.com.au>

On Thu, 26 May 2005 19:53:38 +0800, flyaflya wrote:

> a = "(1,2,3)"
> I want convert a to tuple:(1,2,3),but tuple(a) return ('(', '1', ',', 
> '2', ',', '3', ')') not (1,2,3)

Others have already given some suggestions. Here are some others.

You didn't say where the input string a came from. Do you control
it? Instead of using:

String_Tuple_To_Real_Tuple("(1,2,3)")

can you just create the tuple in the first place?

a = (1, 2, 3)

Second suggestion: if you know that the input string will ALWAYS be in the
form "(1,2,3)" then you can do this:

a = "(1,2,3)"
a = a[1:-1]  # deletes leading and trailing parentheses
a = a.split(",")  # creates a list ["1", "2", "3"] (items are strings)
a = [int(x) for x in a]  # creates a list [1, 2, 3] (items are integers)
a = tuple(a)  # coverts to a tuple

or as a one-liner:

a = "(1,2,3)"
a = tuple([int(x) for x in a[1:-1].split(",")])

Best of all, wrap your logic in a function definition with some
error-checking:

def String_Tuple_To_Real_Tuple(s):
    """Return a tuple of ints from a string that looks like a tuple."""
    if not s:
        return ()
    if (s[0] == "(") and s[-1] == ")"):
        s = s[1:-1]
    else:
        raise ValueError("Missing bracket(s) in string.")
    return tuple([int(x) for x in s.split(",")])


Hope this helps,


-- 
Steven.




From steve at holdenweb.com  Fri May  6 07:22:44 2005
From: steve at holdenweb.com (Steve Holden)
Date: Fri, 06 May 2005 07:22:44 -0400
Subject: win32: structured storage
In-Reply-To: <HxBee.23620$R46.6537@tornado.socal.rr.com>
References: <HxBee.23620$R46.6537@tornado.socal.rr.com>
Message-ID: <d5fjku$jo4$2@sea.gmane.org>

tlviewer wrote:
> hello,
> 
> In honor of the chm exploit that I got hit by last week, I trying
> to code some ActivePython to list the directory inside a CHM.
> 
Welcome to the world of the "drive-by download". Now you know why people 
are recommending migrating away from IE.

 > CHM is supposed to be structured storage (ITSF). If a given CHM
 > file is infected it most likely has an embedded EXE file -- mine
 > had one called [Open.exe].
 >
Ironic, really, since Microsoft insist that the browser must be 
fully-integrated with the operating system I suppose that measn we had 
better all start using Linux.

regards
  Steve
-- 
Steve Holden        +1 703 861 4237  +1 800 494 3119
Holden Web LLC             http://www.holdenweb.com/
Python Web Programming  http://pydish.holdenweb.com/



From edvard+news at majakari.net  Thu May 12 15:56:08 2005
From: edvard+news at majakari.net (Edvard Majakari)
Date: Thu, 12 May 2005 22:56:08 +0300
Subject: Unique Elements in a List
References: <1115676903.432187.294910@z14g2000cwz.googlegroups.com>
	<mailman.241.1115681580.29826.python-list@python.org>
	<87psvzikjk.fsf@titan.staselog.com> <d5qu8p$2iq$1@panix2.panix.com>
	<87mzr0evga.fsf@titan.staselog.com> <42838037$1@nntp0.pdx.net>
Message-ID: <877ji4md5z.fsf@titan.staselog.com>

Scott David Daniels <Scott.Daniels at Acm.Org> writes:

> Normally this is called a polynomial, rather than exponential increase.
> Exponential increases are typically of the form (C^N) (they are all
> equivalent).
> Polynomial times are hallways characterized by their largest exponent,
> So you never call something O(N^3 - N^2) Since, as N gets large enough,
> The N^2 term shrinks to non-existence.

Yup, you are of course, completely correct. I was thinking of "exponent here
is two" and mistakenly named in exponential. 

my_text.replace('exponent','polynom'), there :)

Reminding of ignoring terms with smaller exponent was good, too.

-- 
# Edvard Majakari		Software Engineer
# PGP PUBLIC KEY available    	Soli Deo Gloria!

$_ = '456476617264204d616a616b6172692c20612043687269737469616e20'; print
join('',map{chr hex}(split/(\w{2})/)),uc substr(crypt(60281449,'es'),2,4),"\n";


From rkern at ucsd.edu  Mon May  9 07:50:32 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Mon, 09 May 2005 04:50:32 -0700
Subject: is there a python object which can interpret java-script?
In-Reply-To: <427f4ae5$0$11234$750803fa@corp.news.telefonica.de>
References: <427f4ae5$0$11234$750803fa@corp.news.telefonica.de>
Message-ID: <d5nicq$hvh$1@sea.gmane.org>

Alexander Fillips wrote:
> Hi,
> 
> my short question:
> 
> is there a python object which can interpret java-script?
> 
> the whole story ;-)

google("python javascript")

First link is a Python binding to the SpiderMonkey JavaScript 
interpreter from the Mozilla project. It's unmaintained, and I've never 
tested it, but it's worth a try.

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From duncan.booth at invalid.invalid  Mon May 30 08:29:18 2005
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 30 May 2005 12:29:18 GMT
Subject: how to convert string to list or tuple
References: <d74dbl$h91$1@news.yaako.com>
	<mailman.131.1117109560.18027.python-list@python.org>
	<1117383768.099922.308760@o13g2000cwo.googlegroups.com>
	<Xns9665B54CBAA38duncanbooth@127.0.0.1>
	<KpKdnfZemtzivwffRVn-sA@comcast.com>
Message-ID: <Xns96666DCDF2C19duncanbooth@127.0.0.1>

Steven Bethard wrote:

>> Have you tried giving it the string '__import__("os").system("rm -rf
>> *")'? [Don't try that at home children!]
> 
> But you can try it at home if you set __builtins__ to something other 
> than the default:
> 
> py> eval("""__import__("os").system('echo "hello"')""", 
> dict(__builtins__=None))
> Traceback (most recent call last):
>    File "<interactive input>", line 1, in ?
>    File "<string>", line 0, in ?
> NameError: name '__import__' is not defined
> 
> If you're just doing work with constants, the lack of access to any 
> builtins is ok:
> 
> py> eval("(1,2,3)", dict(__builtins__=None))
> (1, 2, 3)
> 
> I know there have been security holes in this technique before, but I 
> looked at the archives, and all the old ones I found have been
> patched. 
>   (Or at least I wasn't able to reproduce them.)
> 
I guess you are referring to things like this not working when you use eval 
with an empty __builtins__:

eval('''[ cls for cls in {}.__class__.__bases__[0].__subclasses__()
   if '_Printer' in `cls` 
][0]._Printer__setup.func_globals['__builtins__']['__import__']''',
  dict(__builtins__=None))

That gets blocked because func_globals is a 'restricted attribute', so I 
can't get directly at __import__ that way, but what I can do is to access 
any new style class you have defined and call any of its methods with 
whatever arguments I wish.

Even with the big holes patched you are going to find it pretty hard to 
write a safe program that uses eval on untrusted strings. The only way to 
go is to filter the AST (or possibly the bytecode).


From xah at xahlee.org  Sun May 15 05:52:12 2005
From: xah at xahlee.org (Xah Lee)
Date: 15 May 2005 02:52:12 -0700
Subject: Range function
In-Reply-To: <1115951576.138445.51080@z14g2000cwz.googlegroups.com>
References: <1115951576.138445.51080@z14g2000cwz.googlegroups.com>
Message-ID: <1116150732.766217.258960@g47g2000cwa.googlegroups.com>

Here's the Python solution.

----------
# -*- coding: utf-8 -*-
# Python

# http://xahlee.org/tree/tree.html
# Xah Lee, 2005-05

# implementation note: When iStep is a decimal, rounding error
# accumulates. For example, the last item returned from
# Range(0,18,0.3) is 17.7 not 18. A remedy is to turn iStep into a
# fraction and do exact arithmetics, and possibly convert the result
# back to decimal. A lesser workaround is to split the interval as to
# do multiple smaller range and join them together.

def Range(iMin, iMax=None, iStep=None):
  if (iMax==None and iStep==None):
    return Range(1,iMin)
  if iStep==None:
    return Range(iMin,iMax,1)
  if iMin <= iMax and iStep > 0:
    if (isinstance(iStep,int) or isinstance(iStep,long)):
      return range( iMix, iMax, iStep)
    else:
      result=[];temp=iStep
      while iMin <= iMax:
        result.append(iMin)
        iMin += iStep
      return result

# test
print Range(0, 18, 0.3)



From jackdied at jackdied.com  Mon May 23 14:03:36 2005
From: jackdied at jackdied.com (Jack Diederich)
Date: Mon, 23 May 2005 14:03:36 -0400
Subject: MUD Client and Python Plugin Framework
In-Reply-To: <1116870707.802985.58190@g14g2000cwa.googlegroups.com>
References: <1116870707.802985.58190@g14g2000cwa.googlegroups.com>
Message-ID: <20050523180335.GE31631@performancedrivers.com>

On Mon, May 23, 2005 at 10:51:47AM -0700, Discipulus wrote:
> Hey,
> I'm contemplating starting a MUD client in Python, and I would like to
> make it so that people can write their own plugins, but I need ideas on
> the framework. Any suggestions?

Use Lyntin? (http://lyntin.sourceforge.net/)
An extensible MUD client written in python.



From wuwei23 at gmail.com  Thu May 26 02:14:10 2005
From: wuwei23 at gmail.com (alex23)
Date: 25 May 2005 23:14:10 -0700
Subject: evaluated function defaults: stored where?
References: <gsble.1244$m%3.385@trnddc02>
Message-ID: <1117088050.670596.238180@o13g2000cwo.googlegroups.com>

David Isaac wrote:
> As a Python newbie I found this behavior quite surprising.

It can be even more surprising if a default value is mutable:

>>> def foo(a, b=[]):
... 	b.append(a)
... 	return b

>>> foo(3,[1,2])
[1, 2, 3]

>>> foo('c',['a','b'])
['a', 'b', 'c']

>>> foo(1)
[1]

So far, everything is behaving much as you'd expect, but then:

>>> foo(2)
[1, 2]

>>> foo(3)
[1, 2, 3]

The parameter is bound to the list at creation time and, being mutable,
is modifiable each time the function is called.

This can be avoided by modifying your function slightly:

>>> foo(3, [1,2])
[1, 2, 3]

>>> foo('c', ['a','b'])
['a', 'b', 'c']

>>> foo(1)
[1]

>>> foo(2)
[2]

>>> foo(3)
[3]

-alex23



From sjmachin at lexicon.net  Wed May 25 01:58:21 2005
From: sjmachin at lexicon.net (John Machin)
Date: Wed, 25 May 2005 15:58:21 +1000
Subject: Counting occurences of words in a list of strings
In-Reply-To: <a_Tke.10723$on1.7205@clgrps13>
References: <YxRke.10544$on1.9738@clgrps13> <4293fe18@news.eftel.com>
	<a_Tke.10723$on1.7205@clgrps13>
Message-ID: <429413FD.2060409@lexicon.net>

Travers Naran wrote:
> John Machin wrote:
> 
>> 3. If you want to roll your own, start with Gonzalo Navarro's 
>> publications: http://www.dcc.uchile.cl/~gnavarro/subj-multiple.html
> 
> 
> I don't suffer from NMH syndrome.  If ahocorasick does the job, or even 
> count, I'm OK with that.

Do you mean NIH syndrome? Sorry, I should have been clearer, like "if 
you want faster, you will have to roll your own; start with ...". The 
Aho-Corasick algorithm is about 30 years old.  Navarro is part of, and 
summarises the rest of, the state of the art.

Cheers,
John


From harlinseritt at yahoo.com  Sun May  1 08:09:50 2005
From: harlinseritt at yahoo.com (Harlin Seritt)
Date: 1 May 2005 05:09:50 -0700
Subject: tkMessageBox dialog help
In-Reply-To: <1179elj56ralk70@news.supernews.com>
References: <1179elj56ralk70@news.supernews.com>
Message-ID: <1114949390.876896.322200@o13g2000cwo.googlegroups.com>

Nathan,

>From what I've seen I'm afraid this is the way it is. If you call an
instance of tkMessageBox and you don't have a 'master' Tk instance
running, it will create its own.

Still, I'm sure with a bit of voodoo you can hide the self created tk
window while showing the message box. If you find a more elegant way to
accomplish this, please post back !

Harlin Seritt



From steve at holdenweb.com  Tue May 10 07:09:37 2005
From: steve at holdenweb.com (Steve Holden)
Date: Tue, 10 May 2005 07:09:37 -0400
Subject: sync dir's
In-Reply-To: <428094F9.4050007@open-networks.net>
References: <428043D7.8030203@open-networks.net> <d5q3c9$aga$1@sea.gmane.org>
	<428094F9.4050007@open-networks.net>
Message-ID: <42809671.3000506@holdenweb.com>

Timothy Smith wrote:
> Steve Holden wrote:
> 
>> Timothy Smith wrote:
>>  
>>
>>> what would be the best tool to use to sync my local dir with a remote 
>>> one, say off a http resorce (although i'm open to other options 
>>> there) i haven't gotten any feed back on my problems with loading 
>>> pysvn on win98, and i can apprechiate if the dev's are too busy/can't 
>>> be bothered with win98. but i still need to find a solution that can 
>>> achieve the same result, and i'm starting to look for other options.
>>>
>>>   
>>
>> You could always take a look at the ftpmirror code in the Tools 
>> subdirectory of your source distro. I've used that several times with 
>> great satisfaction, and it's fairly low-end - all you need is an FTP 
>> server at the other end.
>>
>> regards
>>  Steve
>>  
>>
> this has to work on both windows and nix's
> 

Indeed. Did I suggest anywhere that it wouldn't? The client can be any 
type of machine that you want, and the server can be most FTP servers.

regards
  Steve
-- 
Steve Holden        +1 703 861 4237  +1 800 494 3119
Holden Web LLC             http://www.holdenweb.com/
Python Web Programming  http://pydish.holdenweb.com/


From jlach at ozdevelopment.com  Thu May 19 22:16:26 2005
From: jlach at ozdevelopment.com (jlach at ozdevelopment.com)
Date: 19 May 2005 19:16:26 -0700
Subject: newbie file/DB processing
In-Reply-To: <1116445969.381550.99280@f14g2000cwb.googlegroups.com>
References: <1116445969.381550.99280@f14g2000cwb.googlegroups.com>
Message-ID: <1116555385.980430.123620@g43g2000cwa.googlegroups.com>

Hi Len,
  If you want to still try this with a Windows programming language try
OZEXE Lite at http://www.ozdevelopment.com. With built in support for
ODBC and a simplified language you be up and running in no time.  You
could just use a datasource for a text file.  It's free by the way.

Regards,
 James



From rkern at ucsd.edu  Mon May 16 23:06:53 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Mon, 16 May 2005 20:06:53 -0700
Subject: Applying a function to a 2-D numarray
In-Reply-To: <8mrh81h0naagpe716i8apjnpj8ib0kg0nk@4ax.com>
References: <nb7h81hqrgbd2kofg48tlt8oaicv34iuh9@4ax.com>	<I_Sdnfv3isSrThXfRVn-vQ@comcast.com>	<7flh81d00feulgkdfdrh69rbgp4v36mqtl@4ax.com>	<uIednQfZNpL1fRXfRVn-vQ@comcast.com>
	<8mrh81h0naagpe716i8apjnpj8ib0kg0nk@4ax.com>
Message-ID: <d6bn3e$nap$1@sea.gmane.org>

Matt Feinstein wrote:
> On Mon, 16 May 2005 12:03:24 -0600, Steven Bethard
> <steven.bethard at gmail.com> wrote:
> 
>>Can you give an example of what you really want to do?  Probably there 
>>are numarray functions that you can use.  In general, you'll do better 
>>applying a sequence of numarray functions than operating element-wise on 
>>an array and converting it from a list back to an array...
> 
> Well, for example, suppose I want to modify the elements of the matrix
> in some fashion. However, I'm not entirely sure how I want to do it.
> As a strawman, I generate a function with a Boolean test in it that
> multiplies by one factor if the matrix element is in an interval and
> by a different factor if it is outside the interval

As Steven Bethard suggests, using the ufuncs provided to express the 
function in a vectorial way is always the best option *if* it's possible.

Otherwise, you may want to look at Scipy's vectorize() function. I don't 
think the numarray port is quite working yet, so you may have to use 
Numeric. You will still have the same function call overhead since you 
will be calling the Python function for each element, but the loops will 
be in C.

Type:             classobj
String Form:   scipy_base.function_base.vectorize
Namespace:        Interactive
File: 
/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/scipy_base/function_base.py
Docstring:
   vectorize(somefunction)  Generalized Function class.
Description:
   Define a vectorized function which takes nested sequence objects or 
numerix arrays as inputs and returns a numerix array as output, 
evaluating the function over successive tuples of the input arrays like 
the python map function except it uses the broadcasting rules of numerix 
Python.

Input:
     somefunction -- a Python function or method

Example:

   def myfunc(a,b):
       if a > b:
           return a-b
       else:
           return a+b
   vfunc = vectorize(myfunc)

   >>> vfunc([1,2,3,4],2)
   array([3,4,1,2])

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From fredrik at pythonware.com  Thu May 12 06:49:22 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 12 May 2005 12:49:22 +0200
Subject: Python Documentation (vs PHP stuff)
References: <d5tjng$kae$1@sea.gmane.org><mailman.390.1115838298.29826.python-list@python.org><d5to4d$895$1@solaris.cc.vt.edu><d5tqi2$d8l$2@sea.gmane.org><d5udc6$uk7$1@sea.gmane.org>
	<d5vapu$ahi$1@sea.gmane.org>
Message-ID: <d5vbt0$dk2$1@sea.gmane.org>

> toolchain that adds relevant links to the generated HTML.  e.g.

oops.  here's the pre-paste-and-cut-error text:

    toolchain that adds relevant links to the generated HTML.  with that
    in place, external contributors can then place an annotation file on their
    own server, and send the link to the editors.  e.g.

</F> 





From tim.tadh at gmail.com  Tue May  3 22:53:27 2005
From: tim.tadh at gmail.com (Tim Henderson)
Date: 3 May 2005 19:53:27 -0700
Subject: Regular Expression tools?
In-Reply-To: <mailman.135.1115173581.6583.python-list@python.org>
References: <mailman.135.1115173581.6583.python-list@python.org>
Message-ID: <1115175207.383715.143830@z14g2000cwz.googlegroups.com>

I am not quite sure what you want. However if you are looking for
Python's regular expression module it is the re module. Just go to
interactive help and view the api for it.

cheers
Tim Henderson



From dieter at handshake.de  Sun May 22 14:00:38 2005
From: dieter at handshake.de (Dieter Maurer)
Date: 22 May 2005 20:00:38 +0200
Subject: python24.zip
References: <mailman.249.1116595092.8733.python-list@python.org>
	<428e0cc3$0$29954$9b622d9e@news.freenet.de>
	<x7hdgw2zqi.fsf@handshake.de>
	<428F8901.5000300@jessikat.fsnet.co.uk>
	<mailman.0.1116767713.21604.python-list@python.org>
Message-ID: <x7zmunkunt.fsf@handshake.de>

Steve Holden <steve at holdenweb.com> writes on Sun, 22 May 2005 09:14:43 -0400:
> ...
> There are some aspects of Python's initialization that are IMHO a bit
> too filesystem-dependent. I mentioned one in
> 
> 
>  http://sourceforge.net/tracker/index.php?func=detail&aid=1116520&group_id=5470&atid=105470
> 
> 
> but I'd appreciate further support. Ideally there should be some means
> for hooked import mechanisms to provide answers that are currently
> sought from the filestore.

There are such hooks. See e.g. the "meta_path" hooks as
described by PEP 302.


From flupke at nonexistingdomain.com  Mon May 30 08:54:04 2005
From: flupke at nonexistingdomain.com (flupke)
Date: Mon, 30 May 2005 12:54:04 GMT
Subject: How to restrict lenght of entry widget to certain number of
	character
In-Reply-To: <1117396149.334908.238580@g14g2000cwa.googlegroups.com>
References: <1117396149.334908.238580@g14g2000cwa.googlegroups.com>
Message-ID: <M1Eme.105300$nZ7.6267010@phobos.telenet-ops.be>

Michael Onfrek wrote:
> Hi!
> I'm playing with entry again and trying to restrict length of entry
> widget to certain number of character, so users cannot enter more
> character into it. Any ideas?
> Reg. Michael Onfrek
> 

What widget set are you talking about, wxPython pygtk, tkinter?

In wxPython:
<ctrl>.SetMaxLength(length)

Benedict


From roy at panix.com  Thu May 26 22:13:40 2005
From: roy at panix.com (Roy Smith)
Date: Thu, 26 May 2005 22:13:40 -0400
Subject: What are OOP's Jargons and Complexities?
References: <1116843761.619249.144790@g47g2000cwa.googlegroups.com>
	<bAske.14563$yx.14338@fe08.lga> <3584469.Aerji1NdQr@yahoo.com>
	<3cWdnbtAM6aZ6g_fRVn-2w@rcn.net>
	<878y24yhst.fsf@ivanova.rotty.yi.org>
	<3fh93fF7set5U1@news.dfncis.de> <9tKdnT-wKq24Uw7fRVn-pA@rcn.net>
	<7vWke.2017$W51.14781@typhoon.sonic.net>
	<1117158478.701216.130110@f14g2000cwb.googlegroups.com>
Message-ID: <roy-D0C1B4.22134026052005@reader1.panix.com>

"Xah Lee" <xah at xahlee.org> wrote:
> Joe: lang x is strongly typed
> Dave: you mean statically typed?
> John: no no, that's weakly typed.
> Mike: actually, it is dynamically typed!

I used to have a bunch of comp sci questions I would ask interview victims.  
One of them was "what does it mean when a language is strongly typed?"  I 
once had somebody tell me it meant the language had long variable names, 
and thus took a lot of typing.


From MSN-nivgalo at hotmail.com  Sun May 15 05:57:57 2005
From: MSN-nivgalo at hotmail.com (MSN-nivgalo at hotmail.com)
Date: Sun, 15 May 2005 09:57:57 GMT
Subject: Paranoider Deutschenmoerder kommt in Psychiatrie
Message-ID: <cd8ebad93af7f1e7b@hotmail.com>

Lese selbst:
http://brandenburg.rz.fhtw-berlin.de/poetschke.html


From michaels at rd.bbc.co.uk  Wed May 25 06:42:57 2005
From: michaels at rd.bbc.co.uk (Michael Sparks)
Date: Wed, 25 May 2005 11:42:57 +0100
Subject: pyvm -- faster python
References: <mailman.164.1115548611.29826.python-list@python.org>
Message-ID: <d71lsq$l2q$1@nntp0.reith.bbc.co.uk>

Stelios Xanthakis wrote:
...
>- It's incompatible with CPython. Not all programs run.
...
> - The demo is an x86/linux binary only. You shouldn't trust binaries,
>    run it in a chrooted environment not as root!
> 
> Hope it works!

Whatever the merits of a system like this, a closed system with bugs
(read: incompatibility with the standard python) will be considered to
"not work" unfortunately - unless people can fix the (or get fixed)
bugs they encounter. 

Releasing as closed source guarantees people will come back to you to
get the code fixed, or abandon using your code in favour of CPython,
Jython or IronPython if they want speed now. (Or PyPy if they want
speed later :-)

Releasing open source means that people *may* fix their own bugs, or
abandon the code.

In your release notes you state:
> WHERE IS THE SOURCE?:
> The source code of pyvm is not yet released.  Whether it will and
> 'when' depends on the interest of the community.  Right now I cannot
> afford the maintainance costs (fix the source, remove/insert comments,
> write docs, fix known but harmless bugs, process bug reports, etc). 
> I'm not making any money from pyvm, but at least I'd like to avoid
> paying for it too! 

Whilst that's fair enough - it's your code, your decision - it might be
worth considering that if these are your only objections consider this:
   * Interest from the community is likely to be low unless you release
     the source. It will be an interesting curio, but no more than that.
   * Releasing as open source does NOT imply you have to support (or
     market) the code - it's simply releasing.
   * If the code isn't stable, bear in mind that the existing python
     test suite can largely be used to test your VM and improve it - if
     you have something that works and you intend at *some* point to
     release the code as open source the sooner you do so, the faster
     your project *may* mature.

At the end of the day though, it's your code, you choose what to do with
it. Personally I find your project curious, and if you had fun creating
the project (or its useful in some other way), then it strikes me as a
positive thing (your release URL implies you're a student!).

Best Regards,


Michael.
-- 
Michael.Sparks at rd.bbc.co.uk    
British Broadcasting Corporation, Research and Development
Kingswood Warren, Surrey KT20 6NP

This message (and any attachments) may contain personal views
which are not the views of the BBC unless specifically stated.




From kraus at hagen-partner.de  Mon May  2 04:38:14 2005
From: kraus at hagen-partner.de (Wolfram Kraus)
Date: Mon, 02 May 2005 10:38:14 +0200
Subject: What's this error then?
In-Reply-To: <mailman.13.1115019955.6583.python-list@python.org>
References: <mailman.13.1115019955.6583.python-list@python.org>
Message-ID: <d54otc$eer$1@ork-un.noris.net>

Sara Khalatbari wrote:
> You remember me asking about running a program in my
> code...I got a problem here
> 
[...]

> & my code is:
> #! /usr/bin/env python
     ^
Remove this space, the line should be:
#!/usr/bin/env python


> 
> import os
> from os import execl
> 
> os.execl ('/home/sara/PYTHON/HEADER/msgfmt.py',
> 'file-roller.HEAD.fa.po')
> 
> 
> But when I run it, this Error raises:
> [sara at angoor HEADER]$ python run.py
> /usr/bin/env: python2.2: No such file or directory
> 
> Do you have any solutions?


HTH,
Wolfram


From tzot at sil-tec.gr  Fri May 13 05:06:54 2005
From: tzot at sil-tec.gr (Christos TZOTZIOY Georgiou)
Date: Fri, 13 May 2005 12:06:54 +0300
Subject: Encryption with Python?
References: <1115324411.952821.150780@o13g2000cwo.googlegroups.com><001301c552db$dd19d3e0$0201a8c0@mcuf7>
	<d5i0as$ejd$1@sea.gmane.org>
	<mailman.134.1115466844.29826.python-list@python.org>
Message-ID: <6vh881d59bbecnc45fojknt0rohgt27crl@4ax.com>

On Sat, 7 May 2005 13:51:40 +0200, rumours say that "Anthra Norell"
<anthra.norell at tiscalinet.ch> might have written:

>Here's the challenge. Prove this breakable
>
>'\x10\x88d\x1d\xba\xa1\xdcK\x05w\x02/s\xa7Q0\xeb8\xb6Gx\xef\xcb\x1e=\xf5\x7f
>\x9bI\xcb(\x87>\xa5\x04\xc1soF\xfd\xc6\xc6\xd9|\x971\xdb\xcdT\tw#\x86a\xdc\x
>b8P\xfb=n\xda\x80\x9f\x84m\x12\x98\x98\xca=o\x0b\x8e\x08O\xb7\x0b\x04SC\x96\
>xc7\xab*\x0b\x996\x06\x86\x83(\x8dQ\x9eG\x8f$\xb2x)\xa9fv\x0c1B\x9b\r\xde\xf
>fc\x08'

and given that

>I rolled my own for relatively short sequences, like passwords. The key is
>an integer. To decrypt use the negative encryption key. I consider the
>encryption unbreakable, as it is indistinguishable from a random sequence.

can we suppose that the encrypted text above are the details of your
credit card (number, name as written on it, expiry date, billing address
and your first dog's name)?  Do you trust the 'unbreakability' of your
algorithm that much?
-- 
TZOTZIOY, I speak England very best.
"Be strict when sending and tolerant when receiving." (from RFC1958)
I really should keep that in mind when talking with people, actually...


From lamthierry at gmail.com  Sun May  8 20:20:00 2005
From: lamthierry at gmail.com (lamthierry at gmail.com)
Date: 8 May 2005 17:20:00 -0700
Subject: Declaring self in PyObject_CallMethod
Message-ID: <1115598000.927106.167320@o13g2000cwo.googlegroups.com>

Calling a python method from C++ has the following signature:

PyObject *
PyObject_CallMethod(PyObject *self, char *method_name,
                    char *arg_format, ...);

I'm having trouble figuring out how to declare self.

Let's say my python file is called stuff.py and is like the following,
doMath() is defined in stuff.py and is not part of any class:

#stuff.py

def doMath():
   val = val + 1


In C++, I think my codes should be like the following:

PyObject *resultObj = PyObject_CallMethod( self, "doMath", "");

What do I put for self? Any help please?



From elbertlev at hotmail.com  Fri May 20 14:48:55 2005
From: elbertlev at hotmail.com (elbertlev at hotmail.com)
Date: 20 May 2005 11:48:55 -0700
Subject: Is Python suitable for a huge, enterprise size app?
In-Reply-To: <GhQie.7592$E7.7374@news-server.bigpond.net.au>
References: <1116430620.004234.187280@f14g2000cwb.googlegroups.com>
	<1116432325.497438.64580@g49g2000cwa.googlegroups.com>
	<1116433218.495131.71260@g49g2000cwa.googlegroups.com>
	<1116440427.255902.36260@g49g2000cwa.googlegroups.com>
	<GhQie.7592$E7.7374@news-server.bigpond.net.au>
Message-ID: <1116614935.062781.164740@g43g2000cwa.googlegroups.com>

Sure it does not. As well as C, unless you instaead of malloc use low
level os-dependant APIs.



From nospam at here.com  Fri May 13 13:39:02 2005
From: nospam at here.com (Matt Feinstein)
Date: Fri, 13 May 2005 13:39:02 -0400
Subject: OSx 10.4 lacks pythonIDE?
References: <2005051303214075249%baza@NOSPAMthemauvezoneorguk>
Message-ID: <mep981dds7emk5t0lv0llruivg95lkdhd0@4ax.com>

On Fri, 13 May 2005 03:21:40 +0100, baza
<baza at NOSPAMthemauvezone.org.uk> wrote:

>Where is the IDE in 'Tiger' for the mac? Don't tell me I have to use 
>text edit all the time??

You can use Spotlight to find the file idle.pyw and use that as an
IDE...

Matt Feinstein

--
There is no virtue in believing something that can be proved to be true.


From could.net at gmail.com  Wed May  4 02:52:04 2005
From: could.net at gmail.com (could ildg)
Date: Wed, 4 May 2005 14:52:04 +0800
Subject: How to write this regular expression?
Message-ID: <311b5ce1050503235270aa2691@mail.gmail.com>

I need a regular expression to check if a string matches it.
The string consists of one to there parts, each parts is a underline
followed by a number,
and the number of the first part should be 0~31, and numbers of other
parts should be
larger than 31.

The requested re should match the following strings:
_3
_5_33
_21
_29_50
_29_700_700000

And the re shouldn't match the following strings:
_3_5   the number of part 2 is less than 31
_43    the number of part 1 shouldn't be less than 31
_5_43_69_98  there shouldn't be more than 3 parts

How to write the re, please?
Thanks in advance.


From cal_2pac at yahoo.com  Thu May 19 00:20:11 2005
From: cal_2pac at yahoo.com (cal_2pac at yahoo.com)
Date: 18 May 2005 21:20:11 -0700
Subject: How to receive events (eg. user mouse clicks) from IE
Message-ID: <1116476411.853695.235670@g14g2000cwa.googlegroups.com>

I am trying to trap events from internet explorer eg. when user clicks
on an html link - I need to get notified for that event.

After looking through the newgroups / internet and reading through
various sections in programming python on win32 - I understand that
this can be done using DispatchWithEvents.
I have also referred to discussions on comp.lang.python
http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/a3c502d06412a5f8/0ee3083e71316da7?q=dispatchwithevents&rnum=43#0ee3083e71316da7

and

http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/1da0668794851296/5bcec1fda216c598?q=dispatchwithevents&rnum=19#5bcec1fda216c598

So far - none of the newgroups postings report that IE events were
trapped successfully (at least I could not find any). However, there is
enough evidence that it can be done.
My problems at the moment:
a) The examples use early binding. However, I cannot get Python makepy
to generate the code to force makepy process at run time - since COM
makepy utility that I invoke from python win 32 does not have any entry
for internet explorer.
I tried to find the CLSID for IE 3050F613-98B5-11CF-BB82-00AA00BDCE0B
but I get an exception
b) Also one of the examples suggest that following code should work

> mod = EnsureModule(...)

> class MyEvents(mod.IDocumentEvents):
>    # your methods here....

> handler = MyEvents(ie.document)

> # handler should start recieving events.

however, what CLSID is to be used in EnsureModule... . I tried with a
few but I always get the error 'NoneType' object has no attribute
'IDocumentEvents'


An example that 'works' will be very useful



From dalke at dalkescientific.com  Sun May  1 03:00:16 2005
From: dalke at dalkescientific.com (Andrew Dalke)
Date: Sun, 01 May 2005 07:00:16 GMT
Subject: Doubt regarding python Compilation
References: <mailman.2565.1114598350.1799.python-list@python.org>
Message-ID: <pan.2005.05.01.07.00.15.926445@dalkescientific.com>

praba kar wrote:
> I want to know whether Python is compiler language
> or interpreted language.  If Python is interpreter
> language why compilation is there.

That distinction is implementation dependent and
not an aspect of the language.  How would that knowledge
affect your decisions or thoughts on the topic?

The C version of Python byte-compiles the code and
caches the byte-code for the next time.

The .Net version can compiled down to assembly, at
least for some calls.

I've seen interactive versions of C that were
implemented with an interpreter.  (The one I'm thinking
of was used for teaching.)

				Andrew
				dalke at dalkescientific.com



From Michael.Coll-Barth at VerizonWireless.com  Tue May 17 09:15:00 2005
From: Michael.Coll-Barth at VerizonWireless.com (Michael.Coll-Barth at VerizonWireless.com)
Date: Tue, 17 May 2005 09:15:00 -0400
Subject: a little trouble passing values to Oracle using bind variables
Message-ID: <20050517131515.2DA021E4006@bag.python.org>

All,

As the subject line says, I am having some trouble passing bind variables to
Oracle.  When I pass a printable string value, such as 'NM', I get data.
When I try to pass a non-printable character, such as 'return' - chr(13), I
get no data back.  I can't simply make NactionCode = chr(13), as python
would change the value of NactionCode to '\r' and Oracle sees this as a two
byte character, and not chr(13).  I have looked into how Oracle might accept
something like '\x00' for chr(0), but to no avail.  

Any thoughts?

thanks,
Michael



def goGetIt( NactivityDt, NactionCode ):

    dataQuery = '''select a, b, c
                   from %s 
                   where activityDt      = :NactivityDt
                     and actionCode      = :NactionCode
                   order by %s
                ''' % ( schema.tableName )

    dbm.cursor.execute(dataQuery, NactivityDt = activityDt, NactionCode =
actionCode )
    result = dbm.cursor.fetchall()

    return result

NactivityDt = '12-apr-2005'
NactionCode = 'NM'
act1 = goGetIt( NactivityDt, NactionCode )

NactivityDt = '12-apr-2005'
NactionCode = 'chr(13)'
act2 = goGetIt( NactivityDt, NactionCode )

NactivityDt = '12-apr-2005'
NactionCode = chr(13)
act3 = goGetIt( NactivityDt, NactionCode )
___________________________________________________________________
The information contained in this message and any attachment may be
proprietary, confidential, and privileged or subject to the work
product doctrine and thus protected from disclosure.  If the reader
of this message is not the intended recipient, or an employee or
agent responsible for delivering this message to the intended
recipient, you are hereby notified that any dissemination,
distribution or copying of this communication is strictly prohibited.
If you have received this communication in error, please notify me
immediately by replying to this message and deleting it and all
copies and backups thereof.  Thank you.



From rkern at ucsd.edu  Mon May  2 15:33:50 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Mon, 02 May 2005 12:33:50 -0700
Subject: odeint function in SciPy
In-Reply-To: <2617fd5d.0505021009.3e6ddb21@posting.google.com>
References: <1114630203.755082.285020@l41g2000cwc.googlegroups.com>	<mailman.2597.1114631083.1799.python-list@python.org>
	<2617fd5d.0505021009.3e6ddb21@posting.google.com>
Message-ID: <d55uvd$v1l$1@sea.gmane.org>

Ben Champion wrote:
> Thanks for the link! I think it has the information I want in it (the
> numerical method eg Runge-Kutta). However I am not sure which of the
> solvers listed within that file is used by odeint.

LSODA

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From trentm at ActiveState.com  Wed May 18 15:32:36 2005
From: trentm at ActiveState.com (Trent Mick)
Date: Wed, 18 May 2005 12:32:36 -0700
Subject: SSL (HTTPS) with 2.4
In-Reply-To: <1116406256.213128.68180@f14g2000cwb.googlegroups.com>
References: <1116392416.139727.84630@g49g2000cwa.googlegroups.com>
	<428AD4D1.8030405@v.loewis.de>
	<1116396878.995648.206820@g49g2000cwa.googlegroups.com>
	<1116406256.213128.68180@f14g2000cwb.googlegroups.com>
Message-ID: <20050518193236.GS27338@ActiveState.com>

[Bloke wrote]
> I just removed my installation of Python 2.4.1, which was the one on
> the python.org web site.  I installed the Activepython 2.4.1 and now I
> get the following error with the same code above:
> 
>  File "C:\Python24\lib\urllib2.py", line 1053, in unknown_open
>     raise URLError('unknown url type: %s' % type)
> URLError: <urlopen error unknown url type: https>
> 
> I'm getting a bit frustrated.  Do I need to import another library?
> Any advise is appreciated.

Unfortunately ActivePython cannot include the SSL library by default
because of crypto export regulations. For SSL support in an ActivePython
installation you'd have to add the _ssl.pyd extension separately (either
building it yourself, or finding an available binary).

Sincerely,
Trent

-- 
Trent Mick
TrentM at ActiveState.com


From franz.steinhaeusler at utanet.at  Mon May  2 09:29:58 2005
From: franz.steinhaeusler at utanet.at (Franz Steinhaeusler)
Date: Mon, 02 May 2005 15:29:58 +0200
Subject: Which IDE is recommended?
References: <426f90ac$1_2@rain.i-cable.com>
	<9f7v619jhigbtoksslnr88f4idoc6ejvu3@4ax.com>
	<1115039282.069052.287920@o13g2000cwo.googlegroups.com>
Message-ID: <ccac7115br3kqki0dpqic9pb673h5ghvql@4ax.com>

On 2 May 2005 06:08:02 -0700, "dcrespo" <dcrespo at gmail.com> wrote:

>> But I personally recommend DrPython. (Not only, I'm a member of the
>> project).
>
>I saw this message and downloaded DrPython. It's very good: 

Hello Daniel,

thank you,

>I like the
>class/functions browser while I'm coding... but I can't find the
>autocompletion feature you talk, and I think this feature is very
>important. Where it is?
>
>Daniel


For clarification:

1) There is the "normal" Autocomplete: It looks for already available
Words in the text file, and suggest possible completition. Edit => Find
and complete.

2) A plugin: Abbreviations: You can edit a list of words with
abbreviation keys (like in SciTE).

3) I think, you meant "Code Completition":
for example you type: os. and with the "." os.chmod, os.chdir, ...
appear in a completition list box.
You have to download it or install via plugin manager this plugin.
Best overview, you get if you choose "Show ALL Project Files" in the 
Project:DrPython: Summary.
Or you look at the homepage: http://drpython.sourceforge.net/
and select Plugins.

HTH,

-- 
Franz Steinh?usler
http://drpython.sourceforge.net/
http://mitglied.lycos.de/drpython/


From mwm at idiom.com  Mon May 23 21:47:05 2005
From: mwm at idiom.com (Mike Meyer)
Date: 23 May 2005 18:47:05 -0700
Subject: first release of PyPy
References: <mailman.264.1116625088.8733.python-list@python.org>
	<1116629407.638782.145950@g47g2000cwa.googlegroups.com>
	<1116644536.741250.249860@g44g2000cwa.googlegroups.com>
	<mailman.279.1116649250.8733.python-list@python.org>
	<1116653460.808204.74460@g43g2000cwa.googlegroups.com>
	<87mzqpytep.fsf@wilson.rwth-aachen.de>
	<mailman.285.1116663550.8733.python-list@python.org>
	<86fywgy1av.fsf@guru.mired.org>
	<mailman.37.1116876123.18027.python-list@python.org>
Message-ID: <5jacmlgzty.fsf@idiom.com>

Shane Hathaway <shane at hathawaymix.org> writes:

> Mike Meyer wrote:
> > Basically, there's a *lot* of history in programming languages. I'd
> > hate to see someone think that we went straight from assembler to C,
> > or that people didn't understand the value of dynamic languages very
> > early.
> 
> Yes, although I wasn't following historical events; I was following the
> trends of what programmers in general have used.  Theory has always been
> far ahead of practice... and generalizations are never correct. ;-)

Well, I'd say that generalization isn't correct. I recall a period before C
became popular when a plethora of different languages were widely used,
depending on the application domain. COBOL, FORTRAN, ALGOL, LISP, Pascal,
Snobol, PL/I, PL/360, APL, various assemblers and others all had their uses.

C (and later C++) has come to dominate a lot of application domains. But
it inherited a lot from those other languages, as did the VHLL's that
have started displacing C in some application domains. Those languages are
still worth studying, because you can see what they did wrong. And what,
in retrospect, they did right that was forgotten by C.

        <mike
-- 
Mike Meyer <mwm at mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.


From tim.peters at gmail.com  Tue May  3 16:28:36 2005
From: tim.peters at gmail.com (Tim Peters)
Date: Tue, 3 May 2005 16:28:36 -0400
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <Pine.SOL.4.33.0505031353330.17143-100000@innovate>
References: <d4u60o$akh$1@news2.netvision.net.il>
	<mailman.47.1114818531.14961.python-list@python.org>
	<3dg5isF6qe1nhU1@news.dfncis.de> <d4v1an$j7q$1@sea.gmane.org>
	<1f7befae05043000165448b8d@mail.gmail.com>
	<mailman.55.1114846630.14961.python-list@python.org>
	<Pine.SOL.4.33.0505031353330.17143-100000@innovate>
Message-ID: <1f7befae05050313286dd4a254@mail.gmail.com>

[Chris McAloney]
> Okay, so I've been working on level seven for a LONG time now.

Hmm.  I've been staring at that one 18 hours a day since last Friday,
and still don't have the foggiest idea.  I've counted boxes, counted
pixels, broken it apart and rearranged it like a jigsaw puzzle, ran
"strings" over the .png, ..., all in vain.

> I've decoded the first message to get the hint for the next level.

It's not nice to humilate your elders in public, Chris.

> Using the same tactics, then I decode the hint as well, but there are
> non-printable characters.  I've tried stripping out those characters,
> quoting them to include in the URL and various anagrams of the printable
> characters, but nothing works.  Does anybody have any suggestions?

Count boxes, count pixels, break it apart and rearrange it like a
jigsaw puzzle, run "strings" over it ... I have a lot of useless
suggestions, anyway.


From sjmachin at lexicon.net  Sun May 29 16:18:01 2005
From: sjmachin at lexicon.net (John Machin)
Date: Mon, 30 May 2005 06:18:01 +1000
Subject: Newbie learning OOP
In-Reply-To: <1117374143.284962.3080@z14g2000cwz.googlegroups.com>
References: <1117374143.284962.3080@z14g2000cwz.googlegroups.com>
Message-ID: <429a2379@news.eftel.com>

LenS wrote:
> Trying to learn OOP concepts and decided to use Python for this
> purpose.  I have coded the following CLASS and it seems to work fine.
> Any comments on the code or suggestions would be appreciated.
> 
> The class let you take a person's name and split it up into first last
> and middle.  The class defaults to the assumption that the name will be
> passed in as a string in first last and middle order however you can
> set the format attribute to take last first and middle order. You can
> then get a string back in and opposite order.
> 
> class names:
>     def __init__(self, format = "F"):
>         self.format = format
> 
>     def namesplit(self, name):
>         if self.format == "F":
>             self.namelist = name.split()
>             self.first = self.namelist[0]
>             self.init = self.namelist[1]
>             self.last = self.namelist[2]
>         else:
>             self.namelist = name.split()
>             self.first = self.namelist[1]
>             self.init = self.namelist[2]
>             self.last = self.namelist[0]
> 
>         return self.first, self.init, self.last
> 
>     def fjoin(self):
>         self.namestring = self.first + ' ' + self.init + ' ' +
> self.last
> 
>     def ljoin(self):
>         self.namestring = self.last + ' ' + self.first + ' ' +
> self.init
> 

You are missing 'return' in the fjoin and ljoin methods.

A practical problem: not everbody's name can be shoe-horned into the 
first/initial/last model. You face catastrophic loss of information.

Some examples, with "last" name in capitals:

J. Edgar HOOVER -> J E HOOVER
Rip J. VAN WINKLE -> Rip J VAN
Jean Paul DE LA SALLE -> Jean P DE
DE LA SALLE, Jean Paul -> LA S DE
MAO Tse Tung -> Tse T MAO # or MAO T Tung
MAO Tse-tung -> Tse-tung M <empty> # or an IndexError
MAO Zedong -> Zedong M <empty> # or an IndexError
Vigdis ERIKSDOTTIR -> Vigdis E <empty> # and lost the gender, too
Gunnlaug ILLUGASON Ormstunga -> Gunnlaug I Ormstunga # nickname 
"Snakestongue"
Ivan Denisovich SHUKHOV -> Ivan D SHUKHOV # and lost father's "first" 
name, too
Friedrich Heinrich Karl VON UND ZU HOHENLOHE -> Friedrich H Karl
NGUYEN Thi Thanh Van -> Thi T NGUYEN
# "Thi" means "female" and "Nguyen" is the "last" name of about 50% of 
the Vietnamese population ...

:-)
You don't work for the Department of Homeland Security, do you?
(-:


From andre.roberge at gmail.com  Tue May 10 06:22:21 2005
From: andre.roberge at gmail.com (=?ISO-8859-1?Q?Andr=E9_Roberge?=)
Date: Tue, 10 May 2005 07:22:21 -0300
Subject: Advice needed on __del__
In-Reply-To: <pan.2005.05.10.09.05.51.546900@bar.org>
References: <d5o1s1$8h3$1@sea.gmane.org>
	<d5obmp$cqh$1@sea.gmane.org>	<mailman.232.1115672394.29826.python-list@python.org>	<427ffa0d$1@nntp0.pdx.net>	<mailman.245.1115689789.29826.python-list@python.org>
	<pan.2005.05.10.09.05.51.546900@bar.org>
Message-ID: <42808B5D.2000908@gmail.com>

stasz wrote:
> On Mon, 09 May 2005 22:49:06 -0300, Andr? Roberge wrote:
> 
> 
>>Scott David Daniels wrote:
>>
>>>Andr? Roberge wrote:
>>>
>>>
>>>>...  Each time I refresh the screen, I could
>>>>force that call, then check to see if Evil has been
>>>>destroyed by Python, which would give me the information
>>>>I need to destroy Evil_twin behind the scene myself -
>>>>which is what I am really after.
> 
> Wouldn't it be better if the robots draw themselfs onto the canvas?
> That way you don't have to worry about deletion, a robot would only
> draw itself when he's has to.
> So perhaps it's an idea to delegate the drawing of stuff to the objects
> themself rather then in the 'visibleworld' class.
> 

I thought about doing something like this... but gave it up.  The other 
way works well.

> 
>>However (famous last words follow...) I feel it's not going to bite me
>>this time.  The main reason is that, when Evil is gone, before the
>>screen gets updated, lots of drawing calls and wxYield() calls are made,
>>so that __del__ has lots of time to get called.
> 
> Your relying on something that *will* bite you, the question is rather
> *when* will it bite you :-)
> 
Well, since
1) this is used only as a demonstration of scoping in Python, in one example
2) other examples do not involve the temporary creation of robots (i.e. 
they would never go out of scope)
3) it works so far...

I'll wait for someone telling me that demonstration doen't work for 
them. ;-)

> IMHO, the approach to rely on Python to do your dirty work and then
> checks if it's done seems a bit VB to me :-)
> 
Ouch!  You don't mince words, do you?  Trying to get the QOTW? ;-)
> 
> Stas Zytkiewicz
> 
Unless I am sorely mistaken, I believe *you* have a full copy of the 
source code.  Why don't you try and see if your approach can be 
incorporated in the program? I'll buy you a beer if you make it work! ;-)

Andr?



From jwkenne at attglobal.net  Mon May 23 20:36:24 2005
From: jwkenne at attglobal.net (John W. Kennedy)
Date: Mon, 23 May 2005 20:36:24 -0400
Subject: What are OOP's Jargons and Complexities?
In-Reply-To: <3584469.Aerji1NdQr@yahoo.com>
References: <1116843761.619249.144790@g47g2000cwa.googlegroups.com>
	<bAske.14563$yx.14338@fe08.lga> <3584469.Aerji1NdQr@yahoo.com>
Message-ID: <qEuke.24657$NZ1.533@fe09.lga>

alex goldman wrote:
> John W. Kennedy wrote:
> 
> 
>>Strong
>>typing has been a feature of mainstream programming languages since the
>>late 1950's.
> 
> 
> I'm just curious, what do you mean by /strong/ typing, and which strongly
> typed languages do you know?

Unfortunately, I have seen the meaning shift with the context. In Ada 
'83, it means it is not possible to have the equivalent of a C 
unprototyped function, and that mixed-type expressions tend to need 
explicit casting. In other contexts (as here), I've seen it used to mean 
simply that variables have definite types, and it is not possible 
(except by the use of polymorphic classes) for a variable to change from 
an integer to a float to a character string in the course of execution. 
In this sense, compile-to-machine-code languages (ee.g., Fortran, COBOL, 
C, C++, or Pascal), are generally strongly typed and interpreted 
languages (ee.g., shell scripts, Perl, REXX, APL, or LISP) are generally 
not. (In pure OO languages, such as SmallTalk or Ruby, the distinction 
may not really apply, since all variables are of the single type 
reference-to-root-class.)

-- 
John W. Kennedy
"The bright critics assembled in this volume will doubtless show, in 
their sophisticated and ingenious new ways, that, just as /Pooh/ is 
suffused with humanism, our humanism itself, at this late date, has 
become full of /Pooh./"
   -- Frederick Crews.  "Postmodern Pooh", Preface


From dkuhlman at rexx.com  Mon May 16 14:41:07 2005
From: dkuhlman at rexx.com (Dave Kuhlman)
Date: Mon, 16 May 2005 18:41:07 GMT
Subject: Recommended version of gcc for Python?
Message-ID: <7P5ie.18072$J12.7334@newssvr14.news.prodigy.com>


Is there a recommended version of gcc that I should be using to
compile Python?  I've compiled Python 2.4 with gcc 3.3.4 on Ubuntu
Debian GNU/Linux.  However, I notice that gcc 3.5 and gcc 4.0 are
available for installation.

Dave

-- 
http://www.rexx.com/~dkuhlman


From gh at ghaering.de  Sat May 28 06:41:35 2005
From: gh at ghaering.de (Gerhard Haering)
Date: Sat, 28 May 2005 12:41:35 +0200
Subject: [ANN] pysqlite 2.0.3 released
Message-ID: <20050528104135.GA19749@mylene.ghaering.de>

This is a minor bugfix release.

Wiki, bugtracker, downloads at http://pysqlite.org/

Changes since 2.0.2
===================

The changes for prefetching in 2.0.2 were incomplete. A check that made
sense before had to be removed, otherwise fetchone() / fetchmany() /
fetchall() could raise ProgrammingErrors instead of returning None or an
empty list if no more rows are available.

Users of pysqlite 2.0.2 should definitely upgrade!
-- 
Gerhard H?ring - gh at ghaering.de - Python, web & database development
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From martin.witte at gmail.com  Fri May  6 17:49:03 2005
From: martin.witte at gmail.com (wittempj@hotmail.com)
Date: 6 May 2005 14:49:03 -0700
Subject: Multiple Inheritence and data attributes
In-Reply-To: <1115412327.265796.71850@z14g2000cwz.googlegroups.com>
References: <1115412327.265796.71850@z14g2000cwz.googlegroups.com>
Message-ID: <1115416143.769856.222320@g14g2000cwa.googlegroups.com>

Two things:
- A call to super doesn't make senseif a class is not derived, and
class b seems superfuous.
- Code below is a working example of your code, the way you did it it
generates an error.

-#!/usr/bin/env python
-class A(object):
-    def __init__(self):
-        super(A, self).__init__()
-        self.dog = "fluffy"
-    def changeDog(self):
-        self.dog = "spike"

-class B(object):
-    def __init__(self):
-        super(B, self).__init__()

-class C(A, B):
-    def __init__(self):
-        super(C, self).__init__()
-    def printDog(self, cls):
-        print cls.dog

-c = C()
-c.printDog(c)
-c.changeDog()
-c.printDog(c)

martin at ubuntu:~$ ./test.py
fluffy
spike
martin at ubuntu:~$



From lreder at worldnet.att.net  Fri May 20 01:09:35 2005
From: lreder at worldnet.att.net (Leonard J. Reder)
Date: Fri, 20 May 2005 05:09:35 GMT
Subject: PIL and fonts
Message-ID: <jieje.794458$w62.500694@bgtnsc05-news.ops.worldnet.att.net>

Hello,

I wrote a quick application to annotate some images and find that
I would like to use different fonts.  I am using Python 2.4 with
the PIL extension to do this.  Moreover I use the ImageDraw text
method.  I read the documentation on ImageFont and would like
a pointer to some useful instructions on how to get various fonts.

Or atleast how to find fonts on my Linux fidera3 OS and convert
them into the font format that PIL uses.  I noticed they have
an application so if I can find some fonts I am off.

Any replies will be very much appreciated.

Len

-- 
===================================
Leonard J. Reder
Home office email : reder at ieee.org
Lab email         : reder at jpl.nasa.gov
Lab web page      : http://reder.jpl.nasa.gov
===================================


From Jue_Shi at or.mxim.com  Wed May 11 16:05:40 2005
From: Jue_Shi at or.mxim.com (Shi, Jue)
Date: Wed, 11 May 2005 13:05:40 -0700
Subject: Python Documentation (should be better?)
Message-ID: <5C99C308457E6D4EA5448EA52A66004A675A6E@or.mxim.com>


I agree. The PHP manual is really good, especially the examples and user
contributed notes.
I think that's why we need the reference manual most time. It help you to
get started on that particular function as well as hint you the trick and
trap.

I really wish Python manual gets better on these two areas.
Is it feasible to write a program to search the mailing list for example and
discussion related to particular function and archive it right under the
session of the manual. Anyone want to start this project?

Maybe a mailing list or forum people can contribute example and notes?

Just a thought.
Jue


-----Original Message-----
From: python-list-bounces+jue_shi=or.mxim.com at python.org
[mailto:python-list-bounces+jue_shi=or.mxim.com at python.org]On Behalf Of
Christopher J. Bottaro
Sent: Wednesday, May 11, 2005 11:51 AM
To: python-list at python.org
Subject: Python Documentation (should be better?)


This post is just the culmination of my thoughts and discussions with my
coworkers on Python.  If you are not interested, please skip over it.

At my work, we are developing a product from scratch.  It is completely
modular and the modules communicate via SOAP.  Because of that, we can
implement individual modules in any language of our choosing (so long as
they have good SOAP libs).  I chose to do all mine in Python because I'm a
huge Python fan boy.  Naturally, I tried to get my coworkers to try Python. 
I made an agreement with one:  I write one of my modules in PHP and he will
write one in Python.

After we were done, we talked about the pros and cons of the languages. 
Funny, the con of Python (documentation) is PHP's strong point.  The PHP
manual is extremely easy to navigate and its search feature works great. 
Contrast that with Python, where you have to use "the tutorial" as the
manual.  Also, the tutorial is just that...a tutorial, its a NOT a manual. 
Its not organized like a manual and its not comprehensive like a manual,
hell, raw_input() isn't even mentioned in Chapter 7. Input and Output.

Now for the real kicker.  Some of the module documentation doesn't even list
simple use cases or even the entire API.  When my coworker came to me with
this complaint, my response was "oh, just load the interpreter, import the
module and call dir() on it.  Then instantiate some objects and call dir()
on them also".  My infatuation with Python had kept me from realizing the
sheer ridiculousness of that method to learn to use an API.  Needless to
say, my coworker's reaction to that statement snapped me out of it.  But
its the truth.  How many of you learn a module by starting the interpreter
and "playing" around with it and using dir()?

The next complaint isn't really about documentation.  Why isn't there a CPAN
or PEAR for Python?  So many times I've search for a module, not found it,
started to write it myself, then later stumble across it on Google...ugh!

Don't get me wrong, I love Python.  The language itself is second to none (I
haven't tried Ruby yet), but this experience has left me wondering about
the future success of Python.  Even I, a huge Python advocate, has started
to use PHP more often simply because I can find well documented,
semi-official modules very easily and learning PHP is a breeze with the
awesome PHP manual.

What do yall think?

-- 
http://mail.python.org/mailman/listinfo/python-list


From mefjr75 at hotmail.com  Sun May  1 18:50:28 2005
From: mefjr75 at hotmail.com (M.E.Farmer)
Date: 1 May 2005 15:50:28 -0700
Subject: MRO problems with diamond inheritance?
In-Reply-To: <d53jqq$b88$1@newsg4.svr.pol.co.uk>
References: <d53jqq$b88$1@newsg4.svr.pol.co.uk>
Message-ID: <1114987828.055744.250090@z14g2000cwz.googlegroups.com>

Your answer lies somewhere in this page ;)
http://www.python.org/2.2.2/descrintro.html
M.E.Farmer



From bill.mill at gmail.com  Fri May  6 12:06:31 2005
From: bill.mill at gmail.com (Bill Mill)
Date: Fri, 6 May 2005 12:06:31 -0400
Subject: Getting number of iteration
In-Reply-To: <797fe3d405050609045bd2457b@mail.gmail.com>
References: <d5g42o$jc5$00$1@news.t-online.com>
	<797fe3d405050609045bd2457b@mail.gmail.com>
Message-ID: <797fe3d40505060906c5d3ce0@mail.gmail.com>

On 5/6/05, Bill Mill <bill.mill at gmail.com> wrote:
> On 5/6/05, Florian Lindner <Florian.Lindner at xgm.de> wrote:
> > Hello,
> > when I'm iterating through a list with:
> >
> > for x in list:
> >
> > how can I get the number of the current iteration?
> 
> Python 2.4 and greater:

ummm, make that 2.3 and greater. I always think things are more recent
than they are.

> 
> for n, x in enumerate(lst):
>     print "iteration %d on element %s" % (n, x)
> 
> Earlier:
> 
> n = 0
> for x in lst:
>     print "iteration %d on element %s" % (n, x)
>     n += 1
> 
> And you shouldn't use list as a variable name; list() is a built-in
> function which you'll clobber if you do.
> 
> Peace
> Bill Mill
> bill.mill at gmail.com
>


From reinhold-birkenfeld-nospam at wolke7.net  Mon May  2 09:31:34 2005
From: reinhold-birkenfeld-nospam at wolke7.net (Reinhold Birkenfeld)
Date: Mon, 02 May 2005 15:31:34 +0200
Subject: Python Challenge ahead [NEW] for riddle lovers
In-Reply-To: <mailman.22.1115040588.6583.python-list@python.org>
References: <d4u60o$akh$1@news2.netvision.net.il>	<1114828856.889984.171750@g14g2000cwa.googlegroups.com>	<1115036638.557573.153250@z14g2000cwz.googlegroups.com>
	<mailman.22.1115040588.6583.python-list@python.org>
Message-ID: <3dmoghF6s3es3U1@individual.net>

John Hazen wrote:
> * mstarzyk at gmail.com <mstarzyk at gmail.com> [2005-05-02 05:10]:
>> Any hints on level 6 ?
>> There is "zip" in the page source, "ZIp" in the
>> image data, but have no clue what to do with them
>> - tried many things :). 
> 
> Have you found the zip file yet?
> 
> (I did, and I still can't figure it out.  I'm wondering if there are
> comments embedded in the jpg that none of my viewers will show me.
> Hmm, maybe there's a python module that does that...  I'll play with it
> more after I sleep on it.)

It's best when you use the zipfile module.

*** SPOILER ***




























































Look carefully at the ZipInfo class for every file in the archive.


From kent37 at tds.net  Sun May  1 06:52:23 2005
From: kent37 at tds.net (Kent Johnson)
Date: Sun, 01 May 2005 06:52:23 -0400
Subject: compare two voices
In-Reply-To: <1114916457.795332.45220@f14g2000cwb.googlegroups.com>
References: <1114916457.795332.45220@f14g2000cwb.googlegroups.com>
Message-ID: <4274b06d$1_3@newspeer2.tds.net>

Qiangning Hong wrote:
> I want to make an app to help students study foreign language.  I want
> the following function in it:
> 
> The student reads a piece of text to the microphone. The software
> records it and compares it to the wave-file pre-recorded by the
> teacher, and gives out a score to indicate the similarity between them.
> 
> This function will help the students pronounce properly, I think.
> 
> Is there an existing library (C or Python) to do this?  Or if someone
> can guide me to a ready-to-implement algorithm?
> 
I have worked on a commercial product that attempts to do this and I will confirm that it is very 
difficult to create a meaningful score.

Kent


From elbertlev at hotmail.com  Tue May 10 15:45:47 2005
From: elbertlev at hotmail.com (elbertlev at hotmail.com)
Date: 10 May 2005 12:45:47 -0700
Subject: Merging overlapping spans/ranges
In-Reply-To: <4280b31b$0$198$edfadb0f@dread12.news.tele.dk>
References: <4280b31b$0$198$edfadb0f@dread12.news.tele.dk>
Message-ID: <1115754347.563756.103300@f14g2000cwb.googlegroups.com>

The linear method:

You create an array - one bool per minute. For one day 24 * 60 entries
is enough. Spans (Start, End) are in minutes from midnight. Set array
slots in range(Start, End) to True for each input span.

Scan the array and find metaspans - contiguous sequences of False.



From nospam at here.com  Fri May 13 09:32:54 2005
From: nospam at here.com (Matt Feinstein)
Date: Fri, 13 May 2005 09:32:54 -0400
Subject: Numarray question
Message-ID: <ela981p4fbl2iv8bd22ebk0egie80g5rol@4ax.com>

If I try

>>> 2 < array([1,2,3])

I get:

array([0, 0, 1], type=Bool)

which is pretty slick, However if I set

>>> q = 2 < array([1,2,3])
>>> q and q

I get a runtime error: "An array doesn't make sense as a truth value."

So..  why not? It seems to me that if I could vectorize logical
expressions (a la Matlab), it would be a lot easier to write functions
that will take either scalar or vector input values. Am I missing
something?

Matt Feinstein

--
There is no virtue in believing something that can be proved to be true.


From gsakkis at rutgers.edu  Tue May 17 02:26:30 2005
From: gsakkis at rutgers.edu (George Sakkis)
Date: 16 May 2005 23:26:30 -0700
Subject: Like Christ PBBUH Prayed
References: <1116096706.696830.275140@g44g2000cwa.googlegroups.com>
	<1116278323.413749.302480@z14g2000cwz.googlegroups.com>
	<1116279629.332838.139870@g49g2000cwa.googlegroups.com>
Message-ID: <1116311190.033186.294670@g44g2000cwa.googlegroups.com>

"flamesrock" wrote:

> I don't understand.. why is everyone talking about christ on
> comp.lang.python? Isn't this not the place?
> 

Maybe they know something we don't.



From dieter at handshake.de  Tue May 24 15:59:13 2005
From: dieter at handshake.de (Dieter Maurer)
Date: 24 May 2005 21:59:13 +0200
Subject: python24.zip
References: <mailman.249.1116595092.8733.python-list@python.org>
	<428e0cc3$0$29954$9b622d9e@news.freenet.de>
	<x7hdgw2zqi.fsf@handshake.de>
	<428F8901.5000300@jessikat.fsnet.co.uk>
	<mailman.0.1116767713.21604.python-list@python.org>
	<x7zmunkunt.fsf@handshake.de>
	<mailman.1.1116793189.18027.python-list@python.org>
Message-ID: <x764x8gzu6.fsf@handshake.de>

Steve Holden <steve at holdenweb.com> writes on Sun, 22 May 2005 16:19:10 -0400:
> ...
> Indeed I have written PEP 302-based code to import from a relational
> database, but I still don't believe there's any satisfactory way to
> have [such a hooked import mechanism] be a first-class component of an
> architecture that specifically requires an os.py to exist in the file
> store during initialization.
> 
> 
> I wasn't asking for an import hook mechanism (since I already knew
> these to exist), but for a way to allow such mechanisms to be the sole
> import support for certain implementations.

We do not have "os.py" (directly) on the file system.
It lives (like everything else) in a zip archive.

This works because the "zipimporter" is put on
"sys.path_hook" before the interpreter starts executing Python code.

Thus, all you have to do: use a different Python startup
and ensure that you special importer (able to import e.g. "os")
is already set up, before you start executing Python code.


Dieter


From andre.roberge at gmail.com  Wed May  4 06:13:22 2005
From: andre.roberge at gmail.com (=?ISO-8859-1?Q?Andr=E9_Roberge?=)
Date: Wed, 04 May 2005 07:13:22 -0300
Subject: Better way to do parsing?
Message-ID: <d5a6rs$tql$1@sea.gmane.org>

Hi all,

I posted the following on the python tutor list 3 days ago ... and 
haven't heard a peep from anyone - which is highly unusual on that list.

[Apologies for the slightly longer post due to code
with tests cases included at the end .]
====================
I have created a "severely restricted" environment within with
users can learn the basics of programming in Python.

[note: eval, exec, chr, input, raw_input are not allowed.]

Within that environment, I want to have the user test the five
valid forms that an import statement can have, by attempting to
import a fake module whose name is "useful".  Other "import"
statements are disallowed.

1. import useful
2. from useful import *
3. from useful import valid_function1 [, valid_function2, ...]
4. from useful import valid_function as better_named_function
5. import useful as not_so_useful_after_all

As far as I can tell, the following works, but it looks rather
"clunky" to me.  My *very limited* experience with the
"re" module may have something to do with this.

Any suggestion would be most welcome.

Andr?

=======Here's the code formatted (fingers crossed) to work if cut and
pasted from email =========================


# test_import.py

import re

isolate_words = re.compile(r'\W+')  # used with .split()

# pre-compiled some regular expression with allowable use of "import"

imp_use = re.compile('^import useful', re.MULTILINE)
imp_use_as = re.compile('^import useful as (\w+)', re.MULTILINE)
from_use_imp_star = re.compile('^from useful import \*', re.MULTILINE)
from_use_imp_names = re.compile(
                             "^from useful import (\w+(,[ ]*\w+)*)",
                              re.MULTILINE)
from_use_imp_as = re.compile(
                    "^from useful import (\w+) as (\w+)",
                    re.MULTILINE)


# In the following, "r" is used so that \b identifies a word boundary,
# and is not interpreted as backslash by Python.

import_misuse = re.compile(r'\bimport\b', re.MULTILINE)

# use to commenting out the valid "import" statements after processed.

comment_from = re.compile('^from ', re.MULTILINE)
comment_import = re.compile('^import ', re.MULTILINE)

# Create a fake module which can be "imported"

right = "turn_right():\n"+\
          "    turn_left()\n"+\
          "    turn_left()\n"+\
          "    turn_left()\n\n"

around = "turn_around():\n"+\
          "    turn_left()\n"+\
          "    turn_left()\n\n"

up_east = "climb_up_east():\n"+\
          "    turn_left()\n"+\
          "    move()\n"+\
          "    turn_left()\n"+\
          "    turn_left()\n"+\
          "    turn_left()\n\n"

up_west = "climb_up_west():\n"+\
          "    turn_left()\n"+\
          "    turn_left()\n"+\
          "    turn_left()\n"+\
          "    move()\n"+\
          "    turn_left()\n\n"

down_west =  "climb_down_west():\n"+\
          "    turn_left()\n"+\
          "    move()\n"+\
          "    turn_left()\n"+\
          "    turn_left()\n"+\
          "    turn_left()\n\n"

down_east =  "climb_down_east():\n"+\
          "    turn_left()\n"+\
          "    turn_left()\n"+\
          "    turn_left()\n"+\
          "    move()\n"+\
          "    turn_left()\n\n"

commands = {'turn_right': right, 'turn_around': around,
              'climb_up_east': up_east, 'climb_up_west': up_west,
              'climb_down_east': down_east, 'climb_down_west': down_west}

#=== end of info on fake module

# The following fonctions are helper functions to
# process the "import" statement:
# they add the appropriate "imported commands"
# before the "import" statement,
# before commenting out (by pre-pending #) the "import" statement line

def import_useful():
      added_text = ''
      for instruction in commands:
          new = "def " + 'useful.' + commands[instruction]
          added_text += new
      return added_text, True

def from_useful_import_star():
      added_text = ''
      for instruction in commands:
          new = "def " + commands[instruction]
          added_text += new
      return added_text, True

def import_useful_as(syn):
      added_text = ''
      for instruction in commands:
          new = "def " + syn + '.' + commands[instruction]
          added_text += new
      return added_text, True

def from_useful_import_names(names):
      added_text = ''
      for instruction in isolate_words.split(names):
          try:
              new = "def " + commands[instruction]
          except:
              print instruction, " not found in module useful"
          added_text += new
      return added_text, True

def from_useful_import_as(name, syn):
      added_text = ''
      try:
          new = "def " + commands[name].replace(name, syn)
      except:
          print name, " not found in module useful"
      added_text += new
      return added_text, True

def process_no_import():
      added_text = ''
      return added_text, True

# the basic processing function

def process_file(file_text):
      if imp_use_as.search(file_text): # look for "import useful as ..."
          syn = imp_use_as.findall(file_text)
          added_text, safe_import_flag = import_useful_as(syn[0])
          file_text = comment_import.sub('#import ', file_text)
      elif imp_use.search(file_text):  # perhaps the "as ..." part is
                                       # missing
          added_text, safe_import_flag = import_useful()
          file_text = comment_import.sub('#import ', file_text)
      elif from_use_imp_star.search(file_text):
          added_text, safe_import_flag = from_useful_import_star()
          file_text = comment_from.sub('#from ', file_text)
      elif from_use_imp_as.search(file_text):
          names = from_use_imp_as.findall(file_text)
          name = names[0][0]
          syn = names[0][1]
          added_text, safe_import_flag = from_useful_import_as(name, syn)
          file_text = comment_from.sub('#from ', file_text)
      elif from_use_imp_names.search(file_text):
          names = from_use_imp_names.findall(file_text)
          added_text, safe_import_flag = \
                      from_useful_import_names(names[0][0])
          file_text = comment_from.sub('#from ', file_text)
      elif import_misuse.search(file_text):
          safe_import_flag = False
          file_text = ''   # remove it all
          added_text = '# import keyword used improperly'
      else:
          added_text = ''
          safe_import_flag = True  # nothing found

      added_text += file_text
      return added_text, safe_import_flag

#======== Various test cases == only self-testing stuff follows

test1 = '''# test1: no import
other instructions'''

test2 = '''# test2
import useful
other instructions'''

test3 = '''# test3
from useful import *
other instructions'''

test4 = '''# test4
from useful import turn_around, turn_right, climb_up_east
other instructions'''

test5 = '''# test5
import useful as use
other instructions'''

test6 = '''# test6
from useful import turn_right
other instructions'''

test7 = '''# test6
from useful import turn_right
other instructions'''

test8 = '''# test8
from useful import turn_right as vire_a_droite
other instructions'''

test9 = '''# test9
import sys
other instructions'''

test10 = '''# test10
from sys import *
other instructions'''

test11 = '''# test11
# import in comment
import useful
other instructions'''

test12 = '''# test12
important test'''

test13 = '''# test 13
import useful
# import sys
other instructions'''

test14 = '''# test14: two import statements; good one first
import useful
import sys
other instructions'''

test15 = '''# test15: two import statements; bad one first
import useful
import sys
other instructions'''

test16 = '''# test16: bad import, indented

          import sys
other instructions'''

if __name__ == "__main__":
      print "=====begin 1: no import======"
      added_text, safe_import_flag = process_file(test1)
      print added_text
      print "safe import flag = ", safe_import_flag
      print "=====begin 2======"
      added_text, safe_import_flag = process_file(test2)
      print added_text
      print "safe import flag = ", safe_import_flag
      print "=====begin 3======"
      added_text, safe_import_flag = process_file(test3)
      print added_text
      print "safe import flag = ", safe_import_flag
      print "=====begin 4======"
      added_text, safe_import_flag = process_file(test4)
      print added_text
      print "safe import flag = ", safe_import_flag
      print "=====begin 5======"
      added_text, safe_import_flag = process_file(test5)
      print added_text
      print "safe import flag = ", safe_import_flag
      print "=====begin 6======"
      added_text, safe_import_flag = process_file(test6)
      print added_text
      print "safe import flag = ", safe_import_flag
      print "=====begin 7======"
      added_text, safe_import_flag = process_file(test7)
      print added_text
      print "safe import flag = ", safe_import_flag
      print "=====begin 8======"
      added_text, safe_import_flag = process_file(test8)
      print added_text
      print "safe import flag = ", safe_import_flag
      print "=====begin 9: import not allowed======"
      added_text, safe_import_flag = process_file(test9)
      print added_text
      print "safe import flag = ", safe_import_flag
      print "=====begin 10: import not allowed======"
      added_text, safe_import_flag = process_file(test10)
      print added_text
      print "safe import flag = ", safe_import_flag
      print "=====begin 11: import ok in text and import in comment======"
      added_text, safe_import_flag = process_file(test11)
      print added_text
      print "safe import flag = ", safe_import_flag
      print "=====begin 12: word used: important; should be ok ======"
      added_text, safe_import_flag = process_file(test12)
      print added_text
      print "safe import flag = ", safe_import_flag
      print "=====begin 13: 2nd import in comment ======"
      added_text, safe_import_flag = process_file(test13)
      print added_text
      print "safe import flag = ", safe_import_flag
      print "=====begin 14: two import statements; good one first ======"
      added_text, safe_import_flag = process_file(test14)
      print added_text
      print "safe import flag = ", safe_import_flag
      print "=====begin 15: two import statements; bad one first ======"
      added_text, safe_import_flag = process_file(test15)
      print added_text
      print "safe import flag = ", safe_import_flag
      print "=====begin 16: bad import, indented ======"
      added_text, safe_import_flag = process_file(test16)
      print added_text
      print "safe import flag = ", safe_import_flag
      print "====="
      wait = input("Press enter to exit.")



From maxm at mxm.dk  Wed May 11 04:35:02 2005
From: maxm at mxm.dk (Max M)
Date: Wed, 11 May 2005 10:35:02 +0200
Subject: Merging overlapping spans/ranges
In-Reply-To: <bQbge.73336$c24.41132@attbi_s72>
References: <4280b31b$0$198$edfadb0f@dread12.news.tele.dk>
	<42813c84.1201907341@news.oz.net> <bQbge.73336$c24.41132@attbi_s72>
Message-ID: <4281c2f8$0$219$edfadb0f@dread12.news.tele.dk>

Jim Sizelove wrote:


Wow! c.l.py is allmost like an AI program generator. But I guess it 
helps to ask questions about problems that programmers find interresting :-)

The "linear" approach is pretty simple to code and understand. I am just 
afraid what happens when many users tries to book that 14 day conference 
in the calendar sometimes this year.

365 * 24 * 60 = 525,600 booleans in the array

Well ok a few MBytes ain't too bad on a modern machine. It would even be 
possible to cut the resolution down to 15 minutes. Yielding 35,040 
bools, but the solution is still O^2 with regards to size of "search 
window" and number of events.

Bengts/Jims and Jordans solutions seems to be relatively similar. I will 
use one of those instead of my own code.


Thanks!


-- 

hilsen/regards Max M, Denmark

http://www.mxm.dk/
IT's Mad Science


From andre.roberge at gmail.com  Tue May 10 11:19:56 2005
From: andre.roberge at gmail.com (=?ISO-8859-1?Q?Andr=E9_Roberge?=)
Date: Tue, 10 May 2005 12:19:56 -0300
Subject: Advice needed on __del__
In-Reply-To: <d5qgrh$rnh$1@sea.gmane.org>
References: <d5o1s1$8h3$1@sea.gmane.org>
	<d5obmp$cqh$1@sea.gmane.org>	<d5oifh$7n8$1@sea.gmane.org>
	<d5qgrh$rnh$1@sea.gmane.org>
Message-ID: <d5qj0l$47r$1@sea.gmane.org>

Fredrik Lundh wrote:
> Andr? Roberge wrote:
>>If I need to have the user call Evil.destroy() as Evil
>>is getting out of scope, it would miss the whole point
>>of teaching about the natural way scope and namespace
>>work.
> 
> 
> well, if you insist on using finalizers to keep track of what's in the current
> scope, I'd say that you are missing the point about how scopes and name-
> spaces work...
> 
I don't think I do, but I think I didn't explain things well enough.
1. The user creates an object, within a "local" scope.  When he does 
that, I update a list of images in a "global" scope.  I then use that 
list of images to decide what to display on the screen.

The user is unaware of the connection I am making behind the scene.
> 
[Snip]
> 
> the correct solution is to inspect the current namespace every time you
> refresh the screen, and make sure the screen contents matches what's
> in the namespace.

To do that, I would need to put a "link", in the "global" scope between 
the object created by the user, and the user. However, in doing so
(if I am not missing the point about how scopes and namespaces work...)
the object created by the user would always have a reference in the 
global scope ... and thus would never disappear from the namespace.

I understand that, if the "link" is a "weak reference", then it might 
disappear when the object goes out of scope.  Is that what you mean I 
should do?

Andr?
> </F> 




From finite.automaton at gmail.com  Tue May 10 14:00:50 2005
From: finite.automaton at gmail.com (Lonnie Princehouse)
Date: 10 May 2005 11:00:50 -0700
Subject: Need a little parse help
References: <mailman.310.1115747834.29826.python-list@python.org>
Message-ID: <1115748050.760878.44510@f14g2000cwb.googlegroups.com>

write() doesn't automatically add a newline like print does.

You can either do:

  outputfile.write(words[1] + '\n')

or 
  
  print >> outputfile, words[1]



From enleverlesO.OmcO at OmclaveauO.com  Fri May 27 17:17:43 2005
From: enleverlesO.OmcO at OmclaveauO.com (Do Re Mi chel La Si Do)
Date: Fri, 27 May 2005 23:17:43 +0200
Subject: Determine if windows drive letter is hard drive or optical from
	python?
References: <1117219586.001829.74220@g49g2000cwa.googlegroups.com>
Message-ID: <429793f5$0$3134$8fcfb975@news.wanadoo.fr>

Hi !

You can use WMI, for that.

Michel Claveau





From superprad at gmail.com  Fri May 13 12:52:14 2005
From: superprad at gmail.com (superprad at gmail.com)
Date: 13 May 2005 09:52:14 -0700
Subject: creating words of diff lengths
Message-ID: <1116003134.531348.67830@g14g2000cwa.googlegroups.com>

X-No-Archive: yes
what I am looking for is

1. To create a list of different words of various lengths(1-15) using
A-Z,a-z,0-9 and punctuations.Basically anything that could be found on
a text document.

2. The words formed need not be meaningful .FOr example 'ajf' or
'fcjgdtfhbs' or even 'gfdew!' or '#bang.' would be a valid entry in the
list.

3.So I am looking for a random set of words of sizes 1 to 15.The proble
might be the time complexity. I inderstand that there would be too many
permutations.



From rbt at athop1.ath.vt.edu  Wed May 25 14:44:52 2005
From: rbt at athop1.ath.vt.edu (rbt)
Date: Wed, 25 May 2005 14:44:52 -0400
Subject: Automatically populate and submit HTML Forms
Message-ID: <d72h34$2is$1@solaris.cc.vt.edu>

How can I make a python client script connect to a Web server and 
automatically populate form fields and then submit the form?

For example, say I wanted to check and see if 1924 was a leap year... 
how would I populate the 'year' field and then submit it for processing? 
I have no control of the server... just the client script.

<form action="cgi-bin/leapyear.py">
  <p>Enter a year and find out if it's a leap year:
  <input type="text" name="year" size="6">
  <input type="submit">
  <input type="reset">
</form>

Many thanks,

rbt


From steve at holdenweb.com  Thu May 12 00:46:35 2005
From: steve at holdenweb.com (Steve Holden)
Date: Thu, 12 May 2005 00:46:35 -0400
Subject: Importing modules
In-Reply-To: <1115835958.080135.290900@o13g2000cwo.googlegroups.com>
References: <1115816747.292060.292200@o13g2000cwo.googlegroups.com>	<mailman.380.1115830888.29826.python-list@python.org>
	<1115835958.080135.290900@o13g2000cwo.googlegroups.com>
Message-ID: <4282DFAB.9050205@holdenweb.com>

qwweeeit at yahoo.it wrote:
> Fredrik Lundh ha scritto:
> 
>>qwweeeit at yahoo.it wrote:
>>
>>
>>>To understand a program, however, you need also a flow chart...
>>
>>so understand a carefully designed modular component structure, you
>>have to remove the structure so you can create a flow chart?
> 
> 
> Not everyone is a "guru" like you... I already implemented (some years
> ago) flow chart tools but for structured languages, not Object Oriented
> ones like Python.
> So forgive me if I'm in trouble... Instead of mocking me, the better
> should be to give me an brief idea of the import's roll (namespaces,
> visibility and so on...) 
> 
> Bye.
> 
Please forgive the effbot, which has been in need of lubrication for 
some time. I am happy to say that he will be offline for three minutes 
and forty-six seconds tomorrow at 0945 UTC, after which we expect that 
advice will be dispensed in a rather more dispassionate fashion. 
According to the research team an effort to engender empathy in the 
bot's behavior and thus make it more acceptable to a majority of the 
Python community was found to conflict with the "can't teach an old dog 
new tricks" circuitry that inherently limits the expansion capability of 
all the early generation bots.

In round terms you might say that

     import module

brings the named module into the current name space as a dependent name 
space. Since the module is accessible by its name (in this case 
"module"), names defined inside the module (normally, remember, only 
executed once the first time it is imported) are available from the 
importing module by qualifying the name of the desired value with the 
name of the imported module. Hence

     module.func(2, 3, 4)

calls the function func defined in module with three numeric arguments.

     name = module.a

binds the name "name" in the local namespace to the same value currently 
referenced by the name "a" in  "module".

On the other hand,

     from module import func, a

takes the names "func" and "a" bound (we hope) when the module was 
executed on first import and binds the same names to the same values in 
the current (importing) module's name space.

The usual (Python) rules for binding apply: when several names are bound 
to the same mutable value all bindings reference the same object, and a 
change to the referenced mutable object is seen no matter which binding 
is used to access that value.

Rebinding of a name from an immutable value means it no longer 
references the same object it formerly did.

regards
  Steve
-- 
Steve Holden        +1 703 861 4237  +1 800 494 3119
Holden Web LLC             http://www.holdenweb.com/
Python Web Programming  http://pydish.holdenweb.com/



From superprad at gmail.com  Mon May  9 18:15:03 2005
From: superprad at gmail.com (superprad at gmail.com)
Date: 9 May 2005 15:15:03 -0700
Subject: Unique Elements in a List
Message-ID: <1115676903.432187.294910@z14g2000cwz.googlegroups.com>

Is there an easy way to grab the Unique elements from a list?
For Example:
data = [0.1,0.5,0.6,0.4,0.1,0.5,0.6,0.9]

what I am looking for is the unique elements 0.4 and 0.9 with their
index from the list.
Probably something like a Hash Table approach!!
I would like to get this done without unnecessary overhead.And the list
could be essentially anything strings,floats,int etc...

Or is it already avaliable as an attr to a list or an array?
I dont remember seeing anything like that.



From mefjr75 at hotmail.com  Sat May 14 13:51:58 2005
From: mefjr75 at hotmail.com (M.E.Farmer)
Date: 14 May 2005 10:51:58 -0700
Subject: A new to Python question
In-Reply-To: <rfnhl2-ig5.ln1@Bernd.Nawothnig.dialin.t-online.de>
References: <1116088663.428932.130860@g43g2000cwa.googlegroups.com>
	<rfnhl2-ig5.ln1@Bernd.Nawothnig.dialin.t-online.de>
Message-ID: <1116093118.599403.35940@g14g2000cwa.googlegroups.com>

(x,y,dotp,sumx,maxv) = abc(x,y,dotp,sumx,maxv)
This will only create a tuple in memory that has no name to reference
it by!
How would you access the returned value?
If you want a tuple you need to assign all the return vales to a single
name.
mytup = abc(x,y,dotp,sumx,maxv)
M.E.Farmer



From kay.schluehr at gmx.net  Thu May 12 15:10:27 2005
From: kay.schluehr at gmx.net (Kay Schluehr)
Date: 12 May 2005 12:10:27 -0700
Subject: pyvm -- faster python
In-Reply-To: <mailman.441.1115886157.29826.python-list@python.org>
References: <mailman.164.1115548611.29826.python-list@python.org>
	<1115561483.741761.212140@f14g2000cwb.googlegroups.com>
	<m102l2-9qr.ln1@home.rogerbinns.com>
	<mailman.264.1115716603.29826.python-list@python.org>
	<vu38l2-k5v.ln1@home.rogerbinns.com>
	<7xvf5qbir1.fsf@ruckus.brouhaha.com>
	<nt98l2-1e.ln1@home.rogerbinns.com>
	<7xpsvymlse.fsf@ruckus.brouhaha.com>
	<1115791624.856252.247890@z14g2000cwz.googlegroups.com>
	<7x1x8el18e.fsf@ruckus.brouhaha.com>
	<1115876410.813839.222080@g43g2000cwa.googlegroups.com>
	<mailman.441.1115886157.29826.python-list@python.org>
Message-ID: <1115925027.360010.183480@g49g2000cwa.googlegroups.com>

Stelios Xanthakis wrote:
> Kay Schluehr wrote:
>
> >
> > Yes. What we are seeking for and this may be the meaning of Armins
> > intentiously provocative statement about the speed of running HLLs
is a
> > successor of the C-language and not just another VM interpreter
that is
> > written in C and limits all efforts to extend it in a flexible and
> > OO-manner. Python is just the most promising dynamic OO-language to
> > follow this target.
> >
>
> Bytecode engine is the best method for dynamic code execution
> ("exec", eval, etc).  A low level OOP language would be very suitable
> for a python VM.

Why this? eval() consumes a string, produces a code object and executes
it. Wether the code-object is bytecode or a chunk of machine code makes
a difference in the runtime but does not alter the high level
behavioural description of eval(). In either way the compile() function
behind eval is a JIT.

> pyvm has that. A big part of it is written in "lightweight C++" [1].
> That makes it less portable as the lwc preprocessor is using GNU-C
> extensions.

Hmmm... I'm not amazingly happy that it is not ANSI-C++. To be honest I
don't want to learn lw-C++ and the peculiaritys of the translator and
debuging through translated code. This may be an interesting study on
it's own but it is just not me who is interested in it. Using an
experimental language to write an experimental VM is clearly out of my
motivation ( only as a remark for the quest of contribution not as a
general criticism ).

> However, it's the same extensions also used by the linux
> kernel and AFAIK the intel compiler supports them too.
>
> So probably the bigger "competitor" of pyvm is boost-python.

How could boost-Python be a "competitor"? Isn't it just an ANSI
C++-binding that relates heavily on templates that are not even
supported by lw-C++?

Regards,
Kay



From plsullivan63 at gmail.com  Mon May 16 12:21:16 2005
From: plsullivan63 at gmail.com (plsullivan)
Date: 16 May 2005 09:21:16 -0700
Subject: newbie - variable "buried in quotes"
Message-ID: <1116260476.332975.87680@g49g2000cwa.googlegroups.com>

I've got a variable deep inside some quotes needed by the application I
am using. I can't figure out how to make this work. (Also, is there a
line continuation character?)
Thanks in advance,
Phil

luser = win32api.GetUserName()

gp.FeatureclassToCoverage_conversion("'Database
Connections\\%s at GIS_srv-earth.sde\\GIS.GIS.Cadastral\\GIS.GIS.Parcels'
POLYGON", prcl83, "", "DOUBLE") % luser



From jtanis at pycoder.org  Fri May  6 19:54:17 2005
From: jtanis at pycoder.org (James Tanis)
Date: Fri, 06 May 2005 19:54:17 -0400
Subject: hard memory limits
In-Reply-To: <200505061538.24026.jstroud@mbi.ucla.edu>
References: <d5f9jl$k6d$1@domitilla.aioe.org>	<mailman.88.1115374567.29826.python-list@python.org>	<d5gphu$hij$1@domitilla.aioe.org>
	<200505061538.24026.jstroud@mbi.ucla.edu>
Message-ID: <427C03A9.4000501@pycoder.org>

James Stroud wrote:

>Sorry Maurice, apparently in bash its "ulimit" (no n). I don't use bash, so I 
>don't know all of the differences offhand. Try that.
>  
>

The only shells I know of that uses unlimit is csh & tcsh.. bleh.. :) 
FWIW, I've had the same problem in openbsd, while ulimit will fix your 
problem temporarily you'll probably want to edit your default user class 
/etc/login.conf. In response to someone earlier, I think it's Linux here 
that is un-unix like, I do not think that characteristally a (non-admin) 
user is allowed unlimited access to ram in most varieties of unix, among 
other things and for good reason.


From danricofer at gmail.com  Thu May 19 19:58:37 2005
From: danricofer at gmail.com (Daniel)
Date: 19 May 2005 16:58:37 -0700
Subject: import cx_Oracle fails!
In-Reply-To: <1116546336.235595.19700@o13g2000cwo.googlegroups.com>
References: <1116454404.355741.51730@f14g2000cwb.googlegroups.com>
	<mailman.204.1116506008.8733.python-list@python.org>
	<1116546336.235595.19700@o13g2000cwo.googlegroups.com>
Message-ID: <1116547117.316065.104030@o13g2000cwo.googlegroups.com>


And, completing my answer, I'm sending you all how I finally got the
Python 2.4.1 and cx_Oracle-4.1 running on my HP-UX (sukz) box:

Box: HP-UX B.11.11

Compiling Python 2.4.1 with gcc 3.4.3
=====================================

./configure --with-libs='-lcl'

Added Makefile options:
CC=             gcc -lc -lpthread

Changes on pyconfig.h:
Turn "#define _POSIX_THREADS" on


Compiling cx_Oracle-4.1:
=======================

Make sure to setup Oracle variables:

	setenv ORACLE_HOME /oracle10/product/10.1.0
	setenv ORACLE_BASE /oracle10
	setenv TMPDIR /var/tmp
	setenv PATH ${PATH}:$ORACLE_HOME/bin
	setenv LD_LIBRARY_PATH $ORACLE_HOME/lib32
	setenv SHLIB_PATH $ORACLE_HOME/lib32
	setenv TNS_ADMIN $ORACLE_HOME/network/admin

Changes on setup.py:
		from: libPath = os.path.join(oracleHome, "lib")
		to:   libPath = os.path.join(oracleHome, "lib32")


And finally:

$ python
Python 2.4.1 (#20, May 18 2005, 20:33:21)
[GCC 3.4.3] on hp-ux11
Type "help", "copyright", "credits" or "license" for more information.
>>> import cx_Oracle
>>> dir(cx_Oracle)
['BINARY', 'BLOB', 'CLOB', 'CURSOR', 'Connection', 'Cursor',
'DATETIME', 'DataError', 'DatabaseError', 'Date', 'DateFromTicks',
'Error', 'FIXED_CHAR', 'FNCODE_BINDBYNAME', 'FNCODE_BINDBYPOS',
'FNCODE_DEFINEBYPOS', 'FNCODE_STMTEXECUTE', 'FNCODE_STMTFETCH',
'FNCODE_STMTPREPARE', 'IntegrityError', 'InterfaceError',
'InternalError', 'LOB', 'LONG_BINARY', 'LONG_STRING', 'NUMBER',
'NotSupportedError', 'OperationalError', 'ProgrammingError', 'ROWID',
'STRING', 'SYSDBA', 'SYSOPER', 'SessionPool', 'TIMESTAMP', 'Time',
'TimeFromTicks', 'Timestamp', 'TimestampFromTicks', 'UCBTYPE_ENTRY',
'UCBTYPE_EXIT', 'UCBTYPE_REPLACE', 'Warning', '__doc__', '__file__',
'__name__', 'apilevel', 'buildtime', 'connect', 'makedsn',
'paramstyle', 'threadsafety', 'version']
>>>



From MLists at romulo.de  Mon May 16 17:10:28 2005
From: MLists at romulo.de (Rainer Mansfeld)
Date: Mon, 16 May 2005 23:10:28 +0200
Subject: CGI on Windows
In-Reply-To: <1116274406.666427.7680@g49g2000cwa.googlegroups.com>
References: <mailman.53.1116266878.8733.python-list@python.org>
	<1116274406.666427.7680@g49g2000cwa.googlegroups.com>
Message-ID: <42890C44.9030400@romulo.de>

Jason Drew wrote:
> I believe you're experiencing a bug that I also encountered, and for
> which there is a patch. See:
> http://sourceforge.net/tracker/?group_id=5470&atid=105470&func=detail&aid=1110478
> 
> Fixing os.py as described in the patch fixed all my CGI-related
> problems. Hope it does for you too!
> 
> Jason
> 

It did!

Thanks a lot Jason.
You just saved my mental health.

   Rainer



From sjmachin at lexicon.net  Wed May 18 16:55:00 2005
From: sjmachin at lexicon.net (John Machin)
Date: Thu, 19 May 2005 06:55:00 +1000
Subject: Comparing 2 similar strings?
References: <24a6d$428b9c10$d1b717f8$2300@PRIMUS.CA>
Message-ID: <d3an81t5fio67v0tac3ig4jjlummsamvq7@4ax.com>

On Wed, 18 May 2005 15:48:32 -0400, William Park
<opengeometry at yahoo.ca> wrote:

>How do you compare 2 strings, and determine how much they are "close" to
>each other?  Eg.
>    aqwerty
>    qwertyb
>are similar to each other, except for first/last char.  But, how do I
>quantify that?
>
>I guess you can say for the above 2 strings that
>    - at max, 6 chars out of 7 are same sequence --> 85% max
>
>But, for
>    qawerty
>    qwerbty
>max correlation is
>    - 3 chars out of 7 are the same sequence --> 42% max


1. Google for such topics as "fuzzy matching", "edit distance",
"approximate comparison".

2. Closer to home, look at the thread in comp.lang.python around
2004-11-18 -- search for "Pingel Hyyro" [and yes you do mean "hyyro",
not "hydro"!!]

3. Steadfastly ignore any (presumably) well-intentioned profferings of
soundex.


HTH,
John


From neuhauser+python-list#python.org at sigpipe.cz  Wed May 18 05:50:47 2005
From: neuhauser+python-list#python.org at sigpipe.cz (Roman Neuhauser)
Date: Wed, 18 May 2005 11:50:47 +0200
Subject: Killing process
In-Reply-To: <1114949247.586471.313870@o13g2000cwo.googlegroups.com>
References: <1114823011.063614.27150@l41g2000cwc.googlegroups.com>
	<k8KdnRntjOUZQu_fRVn-qQ@powergate.ca>
	<1114832689.316806.136670@l41g2000cwc.googlegroups.com>
	<1IidnevlD6E2AO7fRVn-qg@powergate.ca>
	<1114949247.586471.313870@o13g2000cwo.googlegroups.com>
Message-ID: <20050518095047.GA10617@isis.sigpipe.cz>

# harlinseritt at yahoo.com / 2005-05-01 05:07:27 -0700:
> I actually tried mapping the PID to an integer value and it still
> didn't work. At any rate, I found another way to do it. Thanks anyways.

    What the kind people have been trying to get through is that the
    win32api.TerminateProcess() does *NOT* take a pid (whether integer
    or numeric string).
    
    Got it?

-- 
How many Vietnam vets does it take to screw in a light bulb?
You don't know, man.  You don't KNOW.
Cause you weren't THERE.             http://bash.org/?255991


From fredrik at pythonware.com  Wed May 25 16:24:53 2005
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Wed, 25 May 2005 22:24:53 +0200
Subject: Tkinter Text Question
References: <200505241547.49091.jstroud@mbi.ucla.edu><d718o7$hsd$1@sea.gmane.org>
	<200505251304.39555.jstroud@mbi.ucla.edu>
Message-ID: <d72mr6$ee1$1@sea.gmane.org>

James Stroud wrote:

> Thank you Fredrik, this worked beautifully. I had no idea about the "@"
> prefix. Incidentally, I had to change the code to
>
> w.index("@%s,%s" % (e.x, e.y))
>
> Maybe the x,y is a python 2.4 thing.

no, it's a think-before-cutting-and-pasting thing.  should have
been "@%d,%d"

</F>





From steve at REMOVETHIScyber.com.au  Sat May  7 08:28:34 2005
From: steve at REMOVETHIScyber.com.au (Steven D'Aprano)
Date: Sat, 07 May 2005 22:28:34 +1000
Subject: Need help subclassing Borg
Message-ID: <pan.2005.05.07.12.28.34.263372@REMOVETHIScyber.com.au>

I've been working with the Borg design pattern from here:
http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/66531

and I'm having problems subclassing it.

I'm a newbie, so I've probably missed something obvious.

I want two Borg-like classes where all instances share state within each
class, but not between them. This is what I tried:

py> class Borg:
py>     _shared_state = {}
py>     def __init__(self):
py>         self.__dict__ = self._shared_state
py> 
py> class Duck(Borg):
py>     def __init__(self):
py>         Borg.__init__(self)
py>         self.covering = "feathers" # all ducks are feathered
py>
py> class Rabbit(Borg):
py>     def __init__(self):
py>         Borg.__init__(self)
py>         self.covering = "fur" # all rabbits are furry
py>
py> bugs = Bunny(); daffy = Duck()
py> daffy.covering
'feathers'
py> bugs.covering
'feathers'

Not what I wanted or expected. What I wanted was for the subclasses Rabbit
and Duck to each inherit Borg-like behaviour, but not to share state with
any other Borgs. In other words, all Ducks share state, and all Rabbits
share state, but Ducks and Rabbits do not share state with each other.

I now see why Ducks and Rabbits are sharing state: they both share the
same __dict__ as all Borg instances. But I don't see how to get the
behaviour I want. (Except by cutting and pasting the Borg code into each
one.) Can anyone help?

Thanks,



Steven.








From news at NOwillmcguganSPAM.com  Thu May 26 18:28:10 2005
From: news at NOwillmcguganSPAM.com (Will McGugan)
Date: Thu, 26 May 2005 23:28:10 +0100
Subject: overflowerror!!
In-Reply-To: <1117143861.915551.316940@g49g2000cwa.googlegroups.com>
References: <1117143082.825320.131260@g44g2000cwa.googlegroups.com>
	<4296411a$0$24052$db0fefd9@news.zen.co.uk>
	<1117143861.915551.316940@g49g2000cwa.googlegroups.com>
Message-ID: <42964d7b$0$16470$db0fefd9@news.zen.co.uk>

ashtonn at gmail.com wrote:
> I tried that. Still get an Overflowerror: unsigned long is less than
> minimum.
> 

You'll also need to reserve enough space for the 256 ints. Try this..

data = array('L', '\0' * 256*4)


Will
-- 
http://www.willmcgugan.com
"".join( [ {'*':'@','^':'.'}.get(c,None) or chr(97+(ord(c)-84)%26) for c 
in "jvyy*jvyyzpthtna^pbz" ] )


From plsullivan63 at gmail.com  Mon May 23 16:06:15 2005
From: plsullivan63 at gmail.com (plsullivan)
Date: 23 May 2005 13:06:15 -0700
Subject: no win32com.client
Message-ID: <1116878775.133106.240430@z14g2000cwz.googlegroups.com>

In 2.4.1 the following is generated from a script that ran in 2.2:

import sys, string, os, win32com.client
ImportError: No module named win32com.client

thanks for any input,
Phil



From fake at spamerom.niet  Tue May  3 17:39:47 2005
From: fake at spamerom.niet (JZ)
Date: Tue, 03 May 2005 21:39:47 GMT
Subject: [Plone] DTML instead of ZPT for PHPParse
Message-ID: <rowp5j8jsso1$.dvtd6zau36vj.dlg@40tude.net>

Who knows how to add to Plone the following content using DTML instead of
ZPT template?

<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US"
  lang="en-US" i18n:domain="plone"
  metal:use-macro="here/main_template/macros/master">
  <body>
    <div metal:fill-slot="main">
        
	HERE IS MY DYNAMIC PHP: <?php phpinfo();?>

    </div>
  </body>
</html>

I need to use DTML instead of ZPT because PHPParse product cannot work with
ZPT. :( 

--
JZ


From michele.simionato at gmail.com  Tue May  3 23:41:46 2005
From: michele.simionato at gmail.com (Michele Simionato)
Date: 3 May 2005 20:41:46 -0700
Subject: empty lists vs empty generators
In-Reply-To: <8kff71pn27452pkhsthlad49qkg6jtp08v@4ax.com>
References: <509534af.0505021514.5e49aa2@posting.google.com>
	<1115095773.279907.242530@g14g2000cwa.googlegroups.com>
	<8kff71pn27452pkhsthlad49qkg6jtp08v@4ax.com>
Message-ID: <1115178106.010247.10480@z14g2000cwz.googlegroups.com>

Andrea Griffini:

> Are you sure this is going to do the right thing ?

Argh! I missed these two lines from the documentation:

"""Note, once tee() has made a split, the original iterable should not
be used anywhere else; otherwise, the iterable could get advanced
without the tee objects being informed."""

Since the original iterator cannot be reused, we need an alternative
approach. Here is a possibility:

#<check.py>

import itertools

def check(it):
    it_copy1, it_copy2 = itertools.tee(it)
    try:
        it_copy2.next()
    except StopIteration:
        return None
    else:
        return it_copy1

#</check.py>

Here a few examples of usage:

>>> from check import check

>>> it0 = iter([])
>>> print check(it0) # empty iterator, returns None
None

>>> it1 = iter([1])
>>> it1 = check(it1) # non-empty iterator, returns a copy of the
original one
>>> it1.next()
1

In general you can use the idiom

it = check(it) # check for emptiness
if it:
  # do something

This time I have checked the examples here with my doctester
http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/410052 ;)

              Michele Simionato



From jerf at jerf.org  Sat May  7 12:39:28 2005
From: jerf at jerf.org (Jeremy Bowers)
Date: Sat, 07 May 2005 12:39:28 -0400
Subject: Newbie: saving dialog variables
References: <mailman.147.1115486676.29826.python-list@python.org>
	<pan.2005.05.07.14.34.12.711047@jerf.org>
	<mailman.149.1115494990.29826.python-list@python.org>
Message-ID: <pan.2005.05.07.16.39.16.178873@jerf.org>

On Sat, 07 May 2005 15:43:08 +0000, jeff elkins wrote:
> ===============
> import wx
> 
> def create(parent):
>     return vents(parent)
> 
> [wxID_VENTS, wxID_VENTSEXITBUTTON, 
>  wxID_VENTSVENTTYPETEXT,
> [snip]
> 
> ] = [wx.NewId() for _init_ctrls in range(14) ]
> 
> class vents(wx.Dialog):
>     def _init_ctrls(self, prnt):
>         wx.Dialog.__init__(self, id=wxID_VENTS, name=u'prefs', parent=prnt,
>               pos=wx.Point(418, 320), size=wx.Size(321, 285),
>               style=wx.DEFAULT_DIALOG_STYLE, title=u'Ventilator Settings')
>         self.SetClientSize(wx.Size(321, 285))
> 
>         self.exitButton = wx.Button(id=wxID_VENTSEXITBUTTON, label=u'OK',
>               name=u'exitButton', parent=self, pos=wx.Point(60, 250),
>               size=wx.Size(85, 30), style=0)
>         self.exitButton.Bind(wx.EVT_BUTTON, self.OnExitButtonButton,
>               id=wxID_VENTSEXITBUTTON)
> 
>         self.venttypeText = wx.TextCtrl(id=wxID_VENTSVENTTYPETEXT,
>               name=u'venttypeText', parent=self, pos=wx.Point(64, 24),
>               size=wx.Size(144, 25), style=0, value=u'')
> 
> [snip]
> 
>     def __init__(self, parent):
>         self._init_ctrls(parent)
>          
> # build an array of values entered in the dialog
> # return array to calling program
> 
> 
>     def OnExitButtonButton(self, event):
>           self.Close()
> 
> ==================
> 
> The dialog above is called by:
> 
>  def OnVentButtonButton(self, event):
>         dlg = vents.vents(self)
>         try:
>             dlg.ShowModal()
>         finally:
>             dlg.Destroy()

OK, I can't quite directly run this, but assuming you're trying to get the
user to enter some text into the text control, you should be able to add
          print dlg.venttypeText.GetValue()
to print what the user entered; this comes after the try: finally: (i.e.,
on the same indentation as "dlg = vents.vents(self)").

The dialog window is gone, but the widgets and such inside it should
remain until it is garbage collected. (One of the keys to effective UI use
is dissociating the screen representation from the widget data structure
representation; certainly they are related but they are not identical,
generally the widget data structure is around both before and after the
actual display of the widget.)

On an unrelated note, somehow, the dialog should indicate if it was
cancelled or not; you'll need to consult the docs for that. It looks like
you don't want the user to be able to cancel, but watch out for sneaky
cancelling techniques; ESC might be automatically mapped to some sort of
"cancel" by the wx.Dialog class, and the user might also be able to click
on a "close window" button on the resulting dialog box, which may also get
processed as a cancel. I don't think it'll affect your code in this
particular case (it can sometimes), but it's bad UI; there should be a
style that shows a window with no close button on it. (Default may be it,
but I'd be surprised.) That style will probably also not do the default
keyboard mapping, so it should take care of both problems.

If you pull up the dialog and it has no close button and ESC does nothing,
disregard this :-)


From volker_grabsch at v.notjusthosting.com  Sat May 14 18:48:29 2005
From: volker_grabsch at v.notjusthosting.com (Volker Grabsch)
Date: Sun, 15 May 2005 00:48:29 +0200
Subject: Multiple "cmp"s chained one after another
References: <d64io9$s6o$05$1@news.t-online.com>
	<d64pgi$tc8$1@news2.zwoll1.ov.home.nl>
	<d65h73$fgr$02$2@news.t-online.com>
	<d65m47$cmi$1@news2.zwoll1.ov.home.nl>
Message-ID: <d65v7t$rkg$01$1@news.t-online.com>

vincent wehren wrote:
> 
>| > If you don't care about the year, why not just "normalize" the year
>| > to all be the same using the replace method of the date instance?
>|
>| That's a very bad idea. In my example, this would work, but in "reality"
>| I don't sort datetime objects, of course! (Is there any real application
>| where you want to do that?)
>|
>| Instead, I'm sorting "Person" objects using a "birthday" attribute.
>| Since I use these Person objects also in other places, they should never
>| be modified without just to be sorted. In general, the number side effects
>| should always be minimized.
> 
> Can you explain where you see a modification to the orginal object 
> happening?
> (or in any of the other solutions proposed for that matter...)

Sorry, my fault. I didn't read carefully enough.  X-)

> Not here I hope:
> 
>| > datesNorm = [obj.replace(year=1900) for obj in (dates)]
>| > datesNorm.sort()

While you don't change the original objects, there's still a problem since
you're sorting the normalized values. However, I want to sort the original
list (i.e. the list of "Person" objects).

But that's not a real problem if one normalizes in a key function:

	def key_birthday(d):
		return d.replace(year=1900)
	...
	dates.sort(key=key_birthday)

..as suggested in other followups of my posting.

>| Nevertheless, I think you idea is very interesting. Is there any "real"
>| application where normalizing just for sorting would be reasonable?
> 
> How about a case-insensitive sort of strings? (uppering being the 
> normalization step)
> Or getting rid of accented / special characters before sorting.
> These sound like fairly straight-forward use cases to me ;)

For your solution these are good examples. But my question was, whether
normalizing first, and just sorting the normalized values (not the original
values) is reasonable.

I.e., when I sort some strings case-insensitive, I don't want my resulting
(sorted) list to contain only lowercase string. But that's what I would
get if I used the algorithm you described above.


Greets,

-- 
Volker Grabsch
---<<(())>>---
\frac{\left|\vartheta_0\times\{\ell,\kappa\in\Re\}\right|}{\sqrt
[G]{-\Gamma(\alpha)\cdot\mathcal{B}^{\left[\oint\!c_\hbar\right]}}}


From lamthierry at gmail.com  Mon May  9 17:21:37 2005
From: lamthierry at gmail.com (lamthierry at gmail.com)
Date: 9 May 2005 14:21:37 -0700
Subject: GTK progress bar not working properly with pulse()
Message-ID: <1115673697.212194.269470@o13g2000cwo.googlegroups.com>

My python file(progressbar.py) looks like the following:

pbar = gtk.ProgressBar()

def updateBar(percentage):
    print percentage
    pbar.pulse()

class ProgressBar:
    def __init__(self):
        # other gui codes

        align.add(pbar)
        pbar.show()

My C++ codes look like the following:

for ( int percent = 0; percent < 100; percent++ )
{
    PyObject* importModule = PyImport_ImportModule("progressbar");

    if ( importModule == NULL )
	printf("not good\n");
    PyObject* callResult = PyObject_CallMethod(importModule,
"updateBar", "i", percent, NULL);
    if ( callResult == NULL )
        printf("not good enough\n");

    Py_XDECREF(importModule);
}

I run the above C++ code from python by clicking a button. The problem
is that when I print the percentage from the python side, it works
fine, but when I call the pulse() method for ProgressBar, nothing gets
updated on my GUI. Do I have to do anything else with the pbar object
to make it display properly?



From fphsml at gmail.com  Sat May  7 02:26:54 2005
From: fphsml at gmail.com (James)
Date: 6 May 2005 23:26:54 -0700
Subject: Found python for delphi new web site
In-Reply-To: <mailman.125.1115444593.29826.python-list@python.org>
References: <mailman.124.1115442205.29826.python-list@python.org>
	<1115443739.747455.200590@f14g2000cwb.googlegroups.com>
	<mailman.125.1115444593.29826.python-list@python.org>
Message-ID: <1115447214.140149.316800@g14g2000cwa.googlegroups.com>

I didn't either since it needs some components to be installed. I will
surely try playing with the source. It should be a lot easier to
customerize than other IDEs.

I just installed the binary
http://mmm-experts.com/Downloads.aspx?ProductId=4

It does have code insight in the interpreter, but not in the editor
like SPE etc. Also, I could not figure what the shortcut for code
completion is. Should not be a problem once I compile the source since
it uses SynEdit.

The debugger feels very nice (Window layout wise. Visual Studio-ish
feel). Better than PythonWin even, though it doesn't do anything new as
far as I can tell.



From Bernd.Nawothnig at t-online.de  Mon May 16 15:01:14 2005
From: Bernd.Nawothnig at t-online.de (Bernd Nawothnig)
Date: Mon, 16 May 2005 21:01:14 +0200
Subject: Recommended version of gcc for Python?
References: <7P5ie.18072$J12.7334@newssvr14.news.prodigy.com>
Message-ID: <q87nl2-1aj.ln1@Bernd.Nawothnig.dialin.t-online.de>

On 2005-05-16, Dave Kuhlman wrote:

> Is there a recommended version of gcc that I should be using to
> compile Python?  I've compiled Python 2.4 with gcc 3.3.4 on Ubuntu
> Debian GNU/Linux.  However, I notice that gcc 3.5 and gcc 4.0 are
> available for installation.

I am on Gentoo Linux and use gcc 3.4.3 (~x86 == unstable) for almost
all ebuilds including Python 2.3.5 (x86 == stable). No malfunction so
far, and Gentoo depends heavily on Python. _If_ gcc 3.4 compiles a
source the resulting binary will work. The only problem is, not all
ebuilds compile without errors using gcc 3.4.

Simply try it.




Bernd

-- 
Those who desire to give up freedom in order to gain security,
will not have, nor do they deserve, either one. [T. Jefferson]


From steven.bethard at gmail.com  Sat May 21 13:46:11 2005
From: steven.bethard at gmail.com (Steven Bethard)
Date: Sat, 21 May 2005 11:46:11 -0600
Subject: ImportError: cannot import name  - newbie
In-Reply-To: <1116694719.716628.64630@g47g2000cwa.googlegroups.com>
References: <1116694719.716628.64630@g47g2000cwa.googlegroups.com>
Message-ID: <W-2dnSirV4V77hLfRVn-2w@comcast.com>

qwejohn at hotmail.com wrote:
> """box.py"""
> 
> class box:
>   def __init__(self):
>     print "in box"
> 
> This program passes running "python box.py".
> 
> I had put this program under /work/dev/mytests/new
> 
> Now I want to use it from a second python program, which
> resides in a totally different path.
> 
> I had tried , in a program named test.py,
> """test.py"""
> sys.path = [ '/work/dev/mytests' ] + sys.path
> from new import box

When you say "from new import box", you're saying something like "from 
the package new, import the module box".  Which means that you need to 
indicate that the "new" directory is a package.  To do this, place an 
empty file called "__init__.py" in the "new" directory (along with 
"box.py").  Python should then be able to identify "new" as a package, 
and find the "box" module inside of it.

HTH,

STeVe


From rkern at ucsd.edu  Fri May 13 10:45:57 2005
From: rkern at ucsd.edu (Robert Kern)
Date: Fri, 13 May 2005 07:45:57 -0700
Subject: Numarray question
In-Reply-To: <ela981p4fbl2iv8bd22ebk0egie80g5rol@4ax.com>
References: <ela981p4fbl2iv8bd22ebk0egie80g5rol@4ax.com>
Message-ID: <d62e49$av$1@sea.gmane.org>

Matt Feinstein wrote:
> If I try
> 
> 
>>>>2 < array([1,2,3])
> 
> 
> I get:
> 
> array([0, 0, 1], type=Bool)
> 
> which is pretty slick, However if I set
> 
> 
>>>>q = 2 < array([1,2,3])
>>>>q and q
> 
> 
> I get a runtime error: "An array doesn't make sense as a truth value."
> 
> So..  why not? It seems to me that if I could vectorize logical
> expressions (a la Matlab), it would be a lot easier to write functions
> that will take either scalar or vector input values. Am I missing
> something?

logical_and(), logical_or(), etc. These will handle arrays of truth 
values rather than treating the array as a single truth value like "and" 
and "or" will do. The reason why the latter is left undefined is because 
there isn't much solid agreement about what the semantics should be. In 
the face of ambiguity, numarray refuses the temptation to guess and 
forces the user to explicitly request certain behavior via alltrue() or 
sometrue() or whatever strikes their fancy.

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter



From sjmachin at lexicon.net  Sun May  8 01:03:39 2005
From: sjmachin at lexicon.net (John Machin)
Date: Sun, 08 May 2005 15:03:39 +1000
Subject: Newbie : checking semantics
References: <1115503520.392357.230620@f14g2000cwb.googlegroups.com>
Message-ID: <j44r71h56sdcjj07tj2g1i0kn332inq2q9@4ax.com>

On 7 May 2005 15:05:20 -0700, "LDD" <loicderoyand at yahoo.fr> wrote:

>Hi everyone,
>
>I am new to python and was very enthustic about its possibilities when
>I discover that python is really what it is : just a scripting
>language.
>
>What disappoints me is that pyton will happily accept and execute this
>code :
>
>if ( aConditionThatIsFalse ):
>     AFunctionThatIsntDefined()
>
>print "Hello world"
>

and will happily and correctly print "Hello world" ... what's your
beef? You have tested one part of your program. Now, go away and test
the remainder of your program!

>The fact that python doesn't check if the symbol
>AFunctionThatIsntDefined is defined, is really bad

It does check, when you dereference the symbol.

If that dismays you, what about this:

def func1(argfunc):
    argfunc()

or, a real practical example: reading a flat file with columnar data,
each column may need some conversion or data-fixing depending on its
type etc.

fixed_row = []
i = -1
for x in input_row:
    i += 1
    fixed_row.append([conv_func[i](x))

The dynamic nature of Python -- and there's a whole lot more than
functions (and methods) being first-class-citizen data objects --
allows much more code to be written faster cleaner fat-free and allow
more time for writing tests.


> when you develop big
>pieces of code. You will never be sure that your code is free of this
>kind of dummy errors and testing every possible execution paths is
>nightmarish !

What about
AFunctionThatIsDefinedButIsBuggyAndInsteadOfOrderingInPizzaLaunchesAPremptiveMissileStrike()

It is a nightmare, isn't it? If you are employed by a firm that makes
things like avionics, railway signalling equipment, or heart
pacemakers, would you please let us know the brand(s)?

>
>Is there a way to force Python to check the definition of symbol ?

No. However you may use pychecker to pick up the spelling mistakes and
a whole lot more besides.






From cdkrug at worldnet.att.net  Thu May  5 14:42:17 2005
From: cdkrug at worldnet.att.net (Charles Krug)
Date: Thu, 05 May 2005 18:42:17 GMT
Subject: How to detect a double's significant digits
References: <1115314620.902071.323410@f14g2000cwb.googlegroups.com>
Message-ID: <dOtee.706030$w62.64217@bgtnsc05-news.ops.worldnet.att.net>

On 5 May 2005 10:37:00 -0700, mrstephengross <mrstephengross at hotmail.com> wrote:
> Hi all... How can I find out the number of significant digits (to the
> right of the decimal place, that is) in a double? At least, I *think*
> that's what I'm asking for. For instance:
> 
> 0.103 --> 3
> 0.0103 --> 4
> 0.00103 --> 5
> 0.000103 --> 6
> 0.0000103 --> 7
> 
> Thanks in advance!
> --Steve (mrstephengross at hotmail.com)
> 

I would say that each of these examples has three signficant figures.
Each of them can be expressed as:

1.03e+n

For any integer n.

The fact that you've only shown the cases where n \in {-1, -2, -3, -4,
-5 . . } doesn't change the generality of the answer.



From jeffelkins at earthlink.net  Sat May  7 09:24:34 2005
From: jeffelkins at earthlink.net (jeff elkins)
Date: Sat, 7 May 2005 13:24:34 +0000
Subject: Newbie: saving dialog variables
Message-ID: <200505071324.34765.jeffelkins@earthlink.net>

Howdy,

I've written a program that calls an imported dialog to gather some needed 
input. What's the common method for passing that data back to the caller? I've 
tried a 'return data' prior to self.Close() ... all that happens then is the 
dialog won't close. I'm sure this is obvious, but this newbie's stuck!

Thanks,

Jeff



From jerf at jerf.org  Sat May  7 18:49:40 2005
From: jerf at jerf.org (Jeremy Bowers)
Date: Sat, 07 May 2005 18:49:40 -0400
Subject: Newbie : checking semantics
References: <1115503520.392357.230620@f14g2000cwb.googlegroups.com>
Message-ID: <pan.2005.05.07.22.49.38.289634@jerf.org>

On Sat, 07 May 2005 15:05:20 -0700, LDD wrote:
> The fact that python doesn't check if the symbol
> AFunctionThatIsntDefined is defined, is really bad when you develop big
> pieces of code. You will never be sure that your code is free of this
> kind of dummy errors and testing every possible execution paths is
> nightmarish !

Your unsubstantiated claim flies in the face of many man-years of
experience writing Python programs... and also has been discussed here so
many times it's hardly possible to count them. 

Summary: We know better, from experience. Quote dogma until you're blue in
the face, but nobody has managed to prove that large Python apps don't
exist, nor have they been able to show they were harder to write than
equivalent apps in more structured languages, which is also a tough sell
since they were easier.

To win this point, you need to produce evidence that doesn't exist.

Why not try opening your mind to the possibility that the dogma is wrong?

Points to ponder:

http://www.mindview.net/WebLog/log-0025
http://www.artima.com/weblogs/viewpost.jsp?thread=4639

The other point worth making is that if you want a language that you
already know, why not stick with it?

> Is there a way to force Python to check the definition of symbol ?

Look up "pychecker", but beyond that, no. It turns out such a thing is
meaningless in the sense you are used to (static analysis), because a
symbol may not have a referent until much later, and based on arbitrary
code. Python is late-binding, unlike C/C++/Java and friends.

I think that about summarizes the current state of the art on this point.


From baza41 at gmail.com  Fri May 13 13:31:16 2005
From: baza41 at gmail.com (B)
Date: Fri, 13 May 2005 18:31:16 +0100
Subject: OSx 10.4 lacks pythonIDE?
References: <2005051303214075249%baza@NOSPAMthemauvezoneorguk>
	<mailman.508.1115951783.29826.python-list@python.org>
Message-ID: <BEAAA2F4.473%baza41@gmail.com>




On 13/5/05 03:35, in article
mailman.508.1115951783.29826.python-list at python.org, "Robert Kern"
<rkern at ucsd.edu> wrote:

> baza wrote:
>> Where is the IDE in 'Tiger' for the mac? Don't tell me I have to use
>> text edit all the time??
> 
> PythonIDE never came with the OS. You have to install it yourself.
> 
> http://homepages.cwi.nl/~jack/macpython/


OK, just  installed it but it crashes under Tiger.

Baza



From superprad at gmail.com  Fri May 13 13:53:03 2005
From: superprad at gmail.com (superprad at gmail.com)
Date: 13 May 2005 10:53:03 -0700
Subject: create words of various lengths
In-Reply-To: <1116005453.047943.153790@g14g2000cwa.googlegroups.com>
References: <1116002403.374232.210220@g49g2000cwa.googlegroups.com>
	<mailman.42.1116004127.29328.python-list@python.org>
	<1116005453.047943.153790@g14g2000cwa.googlegroups.com>
Message-ID: <1116006783.016581.61610@g44g2000cwa.googlegroups.com>

this works

while len(words) < 10000:
        wd = ""
        for i in ["".join(choice(alphabet)) for i in
range(randint(1,15))]:
            wd += i
        words[wd] = None

anyway Thanks for that this is exactly what i need..



From mefjr75 at hotmail.com  Mon May  2 17:31:17 2005
From: mefjr75 at hotmail.com (M.E.Farmer)
Date: 2 May 2005 14:31:17 -0700
Subject: sys.stdout question
References: <1114985939.702426.114490@f14g2000cwb.googlegroups.com>
	<mailman.1.1114987901.6583.python-list@python.org>
	<1115067029.782290.62730@g14g2000cwa.googlegroups.com>
Message-ID: <1115069477.259882.283760@l41g2000cwc.googlegroups.com>

Save your script and run that from a commandline or import it with your
python shell.
['this is a string.', ' ', 'This is another string.']
You are seeing a side effect of the interactive shell.
['this is a string.', '\n', 'This is another string.','\n']
It would be hard to get to the next prompt  after a print "dsfdfdssd",
if the shell didn't add the \n to get it there.
Also note most shells use repr or str behind the scenes for output to
sys.stdout sys.stderr.
>>> def g():
...     pass
...
>>> g # notice it has been repr'd for you
<function g at 0x0077AB88>
>>> repr(g)
'<function g at 0x0077AB88>'
M.E.Farmer



From n.emami at gmail.com  Thu May 19 05:44:15 2005
From: n.emami at gmail.com (Nader)
Date: 19 May 2005 02:44:15 -0700
Subject: datetime
In-Reply-To: <mailman.200.1116494428.8733.python-list@python.org>
References: <47736$428c56e3$9117fe9b$26924@news2.tudelft.nl>
	<mailman.200.1116494428.8733.python-list@python.org>
Message-ID: <1116495855.847098.307810@f14g2000cwb.googlegroups.com>

I have the next on my machine:
Python 2.3.3 (#1, Apr  6 2004, 01:47:39)
[GCC 3.3.3 (SuSE Linux)] on linux2

Maybe this is a problem!

Thanks!



From gsakkis at rutgers.edu  Wed May  4 04:31:48 2005
From: gsakkis at rutgers.edu (George Sakkis)
Date: 4 May 2005 01:31:48 -0700
Subject: How to write this regular expression?
References: <mailman.139.1115189526.6583.python-list@python.org>
Message-ID: <1115195508.025605.53690@o13g2000cwo.googlegroups.com>

This newsgroup is in general very helpful, but there are some
exceptions; one of them is when the problem appears blatantly to be a
homework. Perhaps if you showed that you worked on it and made some
progress, but it's not quite right, someone may help you.

George



From roccomoretti at hotpop.com  Fri May 27 11:30:10 2005
From: roccomoretti at hotpop.com (Rocco Moretti)
Date: Fri, 27 May 2005 10:30:10 -0500
Subject: Incrementing letters
In-Reply-To: <m2is144t6z.fsf@unique.fully.qualified.domain.name.yeah.right>
References: <d770dr$7lu$1@nwrdmz03.dmz.ncs.ea.ibs-infra.bt.com>
	<Xns966388056EE46duncanbooth@127.0.0.1>
	<d779np$2dd$1@ork-un.noris.net>
	<m2is144t6z.fsf@unique.fully.qualified.domain.name.yeah.right>
Message-ID: <d77ee2$ese$1@news.doit.wisc.edu>

Dan Sommers wrote:
> On Fri, 27 May 2005 16:10:32 +0200,
> Wolfram Kraus <kraus at hagen-partner.de> wrote:
> 
> 
>>Duncan Booth wrote:
> 
> 
>>>>>>import string
>>>>>>upone = string.maketrans(
>>>
>>>'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ',
>>>'bcdefghijklmnopqrstuvwxyzaBCDEFGHIJKLMNOPQRSTUVWXYZA')
>>>
>>>
>>>>>>string.translate("I've got a string s....", upone)
>  
> 
>>Wow, that's quite nice. You really learn something new every day :-) A
>>minor improvement: Use string.ascii_letters as the first parameter for
>>string.maketrans
> 
> 
> And use string.ascii_letters[ 1 : ] + string.ascii_letters[ 0 ] for the
> second parameter to string.maketrans.
> 

Not quite:

 >>> string.ascii_letters[ 1 : ] + string.ascii_letters[ 0 ]
'bcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZa'

i.e. you get 'z' -> 'A' and 'Z' -> 'a'

Another issue is locale settings and special characters - what should be 
done with accented letters? Preserve letter, or shift and loose accent?


From sjmachin at lexicon.net  Wed May  4 22:37:19 2005
From: sjmachin at lexicon.net (John Machin)
Date: Thu, 05 May 2005 12:37:19 +1000
Subject: News/mail gateway problem? (was Re: UnicodeDecodeError )
References: <mailman.30.1115254554.29826.python-list@python.org>
Message-ID: <d71j715r219ut1pq41nruaddog50m8c2he@4ax.com>

On Thu, 5 May 2005 13:00:32 +1200, Thomas Thomas <thomas at eforms.co.nz>
wrote:

>Hi all,
>
>Forgot to mention I am using python 2.3 on windows.
>
>

This message (sent to python_list) would seem to be referencing a
previous posting/message -- but it's not showing up in the newsgroup.
I've noticed a few cases in the last day or so where the first item in
a thread on the newsgroup was a reply to a message/posting that was
not in the thread. 

Is there blockage/leakage in the pipe somewhere?





From jdc at uwo.ca  Mon May  9 22:44:16 2005
From: jdc at uwo.ca (Dan Christensen)
Date: Mon, 09 May 2005 22:44:16 -0400
Subject: pyvm -- faster python
In-Reply-To: <d5omko$4te$1@news.vcd.hp.com>
References: <mailman.164.1115548611.29826.python-list@python.org>
	<7xhdhd4kno.fsf@ruckus.brouhaha.com> <d5omko$4te$1@news.vcd.hp.com>
Message-ID: <871x8fvlz3.fsf@uwo.ca>

djw <dwelch at vcd.hp.com> writes:

> Paul Rubin wrote:
>> Stelios Xanthakis <sxanth at ceid.upatras.gr> writes:
>> 
>>>- The demo is an x86/linux binary only. You shouldn't trust binaries,
>>>   run it in a chrooted environment not as root!
>> 
>> 
>> Are you going to release the source?  If not, it's a lot less interesting.
>
>  From the website:
>
> "...the source will be released when it becomes more complete and stable."

If he releases the source now, it'll probably become more complete and
stable sooner...

Remember, release early, release often!

Dan


From peter at somewhere.com  Tue May 31 07:24:57 2005
From: peter at somewhere.com (Peter Maas)
Date: Tue, 31 May 2005 13:24:57 +0200
Subject: Newbie Here
In-Reply-To: <1117537785.157570.64630@g47g2000cwa.googlegroups.com>
References: <mailman.273.1117521603.18027.python-list@python.org>
	<d7h86n$ebs$1@swifty.westend.com>
	<1117537785.157570.64630@g47g2000cwa.googlegroups.com>
Message-ID: <d7hhhv$n42$1@swifty.westend.com>

Rob Cowie schrieb:
> As a relative newbie myself I think I can say Python is used for
> anything any major programming language is used for.

My list was meant as an enumeration of tasks for which _I_ _currently_
use Python. You are of course right that Python covers a much wider
range, although "anything any major programming language is used for"
is probably too wide. I would e.g. exclude device drivers, router
firmware etc. ;)

-- 
-------------------------------------------------------------------
Peter Maas,  M+R Infosysteme,  D-52070 Aachen,  Tel +49-241-93878-0
E-mail 'cGV0ZXIubWFhc0BtcGx1c3IuZGU=\n'.decode('base64')
-------------------------------------------------------------------


From delrocco at gmail.com  Sun May 15 12:43:06 2005
From: delrocco at gmail.com (delrocco at gmail.com)
Date: 15 May 2005 09:43:06 -0700
Subject: Calling C/C++ not contained inside a .dll
Message-ID: <1116175386.522670.255090@o13g2000cwo.googlegroups.com>

Hello,

I really appreciate anyone who has time to read this and help, Thanks
up front.
I'm very new to python, having picked it up for the first time a week
ago, but I feel I'm very close to getting this working.

Here's what I'm trying to do:
 - call python scripts from game code
 - have those called scripts call functions that are back in game code

The first part looks easy enough to do if I use, ppembed or something.
The second part has been driving me nuts, because I thought I had a
solution and now I just feel defeated.

I've gotten SWIG working and built a .dll extension with functions in
it to be loaded from python and communicate with my game.  I've
successfully imported it into a python interpreter and called
functions in it.

The problem is I haven't figured out how to make those calls call
functions in my game application.  If I load the same .dll from my
game and pass in a structure full of function pointers, the
communication from the game to the .dll works... but then the module I
am using in the python interpreter is not the same one, as if its a
copy.

My question is..
How do I get python scripts to call functions in my game code without
having to build a .dll that has the entire meat of my game inside of
it?  Ultimately I want to be able to load scripts from my game and
have those scripts call functions in my game code.

Example:
- game calls script's "onDamage" function
- script sets various variables, and then calls "swapModel" function in
game

Thanks,
Joe



From mrstephengross at hotmail.com  Thu May  5 13:37:00 2005
From: mrstephengross at hotmail.com (mrstephengross)
Date: 5 May 2005 10:37:00 -0700
Subject: How to detect a double's significant digits
Message-ID: <1115314620.902071.323410@f14g2000cwb.googlegroups.com>

Hi all... How can I find out the number of significant digits (to the
right of the decimal place, that is) in a double? At least, I *think*
that's what I'm asking for. For instance:

0.103 --> 3
0.0103 --> 4
0.00103 --> 5
0.000103 --> 6
0.0000103 --> 7

Thanks in advance!
--Steve (mrstephengross at hotmail.com)



From phillip.watts at anvilcom.com  Wed May  4 13:54:06 2005
From: phillip.watts at anvilcom.com (phil)
Date: Wed, 04 May 2005 12:54:06 -0500
Subject: Newbie.......Python and Networking
References: <1115227469.785695.16360@f14g2000cwb.googlegroups.com>
Message-ID: <42790C3E.6020907@anvilcom.com>

xeron wrote:

 > Hi ya fellas
 >
 > I am planning to learn Python, and because i have a networking
 > background so would like to direct my learning in a way that is
 > beneficial to my tasks in the mentioned field, please suggest a couple
 > of projects which i can implement so as to accelerate the learning
 > process................(Python projects in Networking domain, let it be
 > big...3 months....2 hrs per day)
 >
 > Really appreciate any help
 >
 >

I let my students learn on a VERY simple chat program,
UDP only. I think it was less than 50 lines of Python.

I cut my teeth on a message handler, POS application posts
its requests to MySQL via a Python message handler.

Want BIG?
spread.org is very powerful and somewhat complicated.
A python message server, guaranteed orderly delivery
over 1 UDP port, which is a little easier to understand
than spread, would be cool.

Even BIGGER?
Every linux distro has its own set of complex and
nearly unreadable networking scripts and none of them
handle routing and firewalls well.
Be the hero who rights a universal, well documented
python networking script.  Easy to read config file:

ethmodule=
IPADDR=192.168.1.12/24
DEFGATEWAY=192.168.1.1
DNSSERV1=208.208.1.1

or even a GUI with help.




From dave.benjamin at gmail.com  Wed May 11 12:02:36 2005
From: dave.benjamin at gmail.com (Dave Benjamin)
Date: Wed, 11 May 2005 09:02:36 -0700
Subject: OO design question / Transform object in place?
In-Reply-To: <1115825605.654601.137580@f14g2000cwb.googlegroups.com>
References: <1115825605.654601.137580@f14g2000cwb.googlegroups.com>
Message-ID: <50qge.9716$D91.477@fed1read01>

andy2O at hotmail.com wrote:
> Now suppose I set "expression2 = Sum([a,-a])" and Sum.simplify()
> recognises that the two terms cancel and the Sum has value 0.
> 
> Can I make "expression2.simplify()" transform expression2 from an
> instance of Sum to an instance of Number(0) **in place**? Is that
> possibe, or do I really have to write

I think it's much better for simplify() to return a new object always, 
and leave the original object unmodified. You can still write:

expression2 = expression2.simplify()

if you don't care about the old value.

> expression2 = SimplifyFunction(expression2)

This is another valid solution, but it's not an OO solution (you will 
need to use "isinstance" to write "SimplifyFunction").

> and use the function return to set expression2 to be a Number(0)
> object, which is annoying for a variety of reasons! Have I made a
> mistake in the design?

It's usually considered poor OO style to have an object change its class 
at runtime, although I'm sure you could do it in Python ("__bases__" 
would be a place to start) if you really wanted. For what you're trying 
to do, I don't think it's necessary, though.

Dave


From dave at pythonapocrypha.com  Tue May 31 15:01:12 2005
From: dave at pythonapocrypha.com (Dave Brueck)
Date: Tue, 31 May 2005 13:01:12 -0600
Subject: working with pointers
In-Reply-To: <d7ibjg$8en$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
References: <d7iapk$6ck$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>	<JJSdnXLcZdUsLQHfRVn-1w@comcast.com>
	<d7ibjg$8en$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com>
Message-ID: <429CB478.6090803@pythonapocrypha.com>

Michael wrote:
> sorry, I'm used to working in c++ :-p
> 
> if i do
> a=2
> b=a
> b=0
> then a is still 2!?
> 
> so when do = mean a reference to the same object 

Always.

> and when does it mean make a copy of the object??

Never.

-Dave


From temp at mclift.fsnet.co.uk  Mon May 16 17:28:01 2005
From: temp at mclift.fsnet.co.uk (temp at mclift.fsnet.co.uk)
Date: 16 May 2005 14:28:01 -0700
Subject: Markov chain with extras?
Message-ID: <1116278880.976106.191780@o13g2000cwo.googlegroups.com>

Hi All,

Could someone show me how to do this?

I want to generate a list using a Markov chain, however, as well as
using the previous two items in the list to decide the current choice I
want the decision to be also dependant on an item at the current
position in another list.

I hope this explains thing clearly enough.

Thanks,

Malcolm



From jacob at cd.chalmers.se  Thu May  5 05:03:41 2005
From: jacob at cd.chalmers.se (Jacob Hallen)
Date: 5 May 2005 09:03:41 GMT
Subject: Europython update
Message-ID: <mailman.55.1115315660.29826.python-announce-list@python.org>

This is a news update about the Europython 2005 conference, to be held
in G?teborg, Sweden 27-29 June

- Due to some technical prolems with the registration website we
  have decided to extend the registration of talks until 8 May.
  We already have an impressive array of talks, but we do have room
  for some more. We are especially interested in talks focusing on
  the Python language and talks on Python usage in Science.

- To encourage companies to bring their whole staff and their customers
  to Europython, we have created a corporate discount. If you bring
  5 people or more from a single organisation, you get a 20% discount on
  the regular and early-bird regular fee.

- A list of all the accepted talks will be published 11 May 2005 on the
  Europython website.

- Early bird registrations end 15 May. Registration for the low cost
  accomodation close to the conference venue ends on the same day.

For all conference details, go to:
http://www.europython.org

See you in G?teborg.

EuroPython Team

About EuroPython: Europython is an annual conference for the Python
  and Zope communities. It circulates between different sites in
  Europe. Having started in Charleroi, Belgium, it is now in G?teborg,
  Sweden and will move to CERN in Swizerland next year. Europython is a
  community conference run by volunteers.


-- 


From python-url at phaseit.net  Mon May 16 09:27:30 2005
From: python-url at phaseit.net (Simon Brunning)
Date: Mon, 16 May 2005 13:27:30 +0000
Subject: Dr. Dobb's Python-URL! - weekly Python news and links (May 16)
Message-ID: <mailman.45.1116251554.8733.python-announce-list@python.org>

QOTW: "As you learn Python, you will find that your PHP code will
improve, possibly becoming more and more concise until it disappears
completely." - Jorey Bump

(Responding to a quotaton of Sturgeon's law: "Ninety percent of
everything is crap.") "fwiw, this is of course why google displays 10
results on the first page. according to the law, one of them is always
exactly what you want." - Fredrik Lundh


    Testing for an empty iterator:
        http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/413614
        
    Python email libraries, part 1: POP3:
        http://www.devshed.com/c/a/Python/Python-Email-Libraries-part-1-POP3/
        
    Solipsis, a peer-to-peer system for a massively multi-participant virtual
    world:
        http://solipsis.netofpeers.net/wiki/HomePage/
        
    Twisted reStructuredText server:
        http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/413609
        
    How can Python's documentation be improved?
        http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/d96afc7dd63cbe24
        
    Static typing exposed:
        http://seanmcgrath.blogspot.com/archives/2005_05_08_seanmcgrath_archive.html#111597032916040577
        
    Finding Unique Elements in a List:
        http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/3011d698d9b764f2
        
    Diving into PyParsing:
        http://www.advogato.org/person/titus/diary.html?start=89
        
    Notable releases:
        PyGTK 2.6.2:
            http://www.pygtk.org/
        Python for .NET 1.0 RC1
            http://www.zope.org/Members/Brian/PythonNet
        

========================================================================
Everything Python-related you want is probably one or two clicks away in
these pages:

    Python.org's Python Language Website is the traditional
    center of Pythonia
        http://www.python.org
    Notice especially the master FAQ
        http://www.python.org/doc/FAQ.html

    PythonWare complements the digest you're reading with the
    marvelous daily python url
         http://www.pythonware.com/daily  
    Mygale is a news-gathering webcrawler that specializes in (new)
    World-Wide Web articles related to Python.
         http://www.awaretek.com/nowak/mygale.html 
    While cosmetically similar, Mygale and the Daily Python-URL
    are utterly different in their technologies and generally in
    their results.

    For far, FAR more Python reading than any one mind should
    absorb, much of it quite interesting, several pages index
    much of the universe of Pybloggers.
	http://lowlife.jp/cgi-bin/moin.cgi/PythonProgrammersWeblog
        http://www.planetpython.org/
        http://mechanicalcat.net/pyblagg.html

    comp.lang.python.announce announces new Python software.  Be
    sure to scan this newsgroup weekly.
        http://groups.google.com/groups?oi=djq&as_ugroup=comp.lang.python.announce

    Steve Bethard, Tim Lesher, and Tony Meyer continue the marvelous
    tradition early borne by Andrew Kuchling, Michael Hudson and Brett
    Cannon of intelligently summarizing action on the python-dev mailing
    list once every other week.
	http://www.python.org/dev/summary/

    The Python Package Index catalogues packages.
        http://www.python.org/pypi/

    The somewhat older Vaults of Parnassus ambitiously collects references
    to all sorts of Python resources.
        http://www.vex.net/~x/parnassus/   

    Much of Python's real work takes place on Special-Interest Group
    mailing lists
        http://www.python.org/sigs/

    The Python Business Forum "further[s] the interests of companies
    that base their business on ... Python."
	http://www.python-in-business.org

    Python Success Stories--from air-traffic control to on-line
    match-making--can inspire you or decision-makers to whom you're
    subject with a vision of what the language makes practical.
        http://www.pythonology.com/success

    The Python Software Foundation (PSF) has replaced the Python
    Consortium as an independent nexus of activity.  It has official
    responsibility for Python's development and maintenance. 
        http://www.python.org/psf/
    Among the ways you can support PSF is with a donation.
        http://www.python.org/psf/donate.html

    Kurt B. Kaiser publishes a weekly report on faults and patches.
        http://www.google.com/groups?as_usubject=weekly%20python%20patch
       
    Cetus collects Python hyperlinks.
        http://www.cetus-links.org/oo_python.html

    Python FAQTS
        http://python.faqts.com/

    The Cookbook is a collaborative effort to capture useful and
    interesting recipes.
	http://aspn.activestate.com/ASPN/Cookbook/Python

    Among several Python-oriented RSS/RDF feeds available are
	http://www.python.org/channews.rdf
	http://bootleg-rss.g-blog.net/pythonware_com_daily.pcgi
	http://python.de/backend.php
    For more, see
	http://www.syndic8.com/feedlist.php?ShowMatch=python&ShowStatus=all
    The old Python "To-Do List" now lives principally in a
    SourceForge reincarnation.
        http://sourceforge.net/tracker/?atid=355470&group_id=5470&func=browse
        http://python.sourceforge.net/peps/pep-0042.html
     
    The online Python Journal is posted at pythonjournal.cognizor.com.
    editor at pythonjournal.com and editor at pythonjournal.cognizor.com
    welcome submission of material that helps people's understanding
    of Python use, and offer Web presentation of your work.

    del.icio.us presents an intriguing approach to reference commentary.
    It already aggregates quite a bit of Python intelligence.
        http://del.icio.us/tag/python

    *Py: the Journal of the Python Language*
        http://www.pyzine.com

    Archive probing tricks of the trade:
        http://groups.google.com/groups?oi=djq&as_ugroup=comp.lang.python&num=100
        http://groups.google.com/groups?meta=site%3Dgroups%26group%3Dcomp.lang.python.*

Previous - (U)se the (R)esource, (L)uke! - messages are listed here:
  http://www.ddj.com/topics/pythonurl/ (requires subscription)
  http://groups-beta.google.com/groups?q=python-url+group:comp.lang.python*&start=0&scoring=d&
  http://purl.org/thecliff/python/url.html (dormant)
or
  http://groups.google.com/groups?oi=djq&as_q=+Python-URL!&as_ugroup=comp.lang.python


Suggestions/corrections for next week's posting are always welcome.
E-mail to <Python-URL at phaseit.net> should get through.

To receive a new issue of this posting in e-mail each Monday morning
(approximately), ask <claird at phaseit.net> to subscribe.  Mention
"Python-URL!".


-- The Python-URL! Team--

Dr. Dobb's Journal (http://www.ddj.com) is pleased to participate in and
sponsor the "Python-URL!" project.




From usenet at terabytemusic.cjb.net  Tue May 17 11:57:21 2005
From: usenet at terabytemusic.cjb.net (DJTB)
Date: Tue, 17 May 2005 17:57:21 +0200
Subject: processing a Very Large file
Message-ID: <118k530sl6kve5c@corp.supernews.com>

Hi,

I'm trying to manually parse a dataset stored in a file. The data should be
converted into Python objects.

Here is an example of a single line of a (small) dataset:

3 13 17 19 -626177023 -1688330994 -834622062 -409108332 297174549 955187488
589884464 -1547848504 857311165 585616830 -749910209 194940864 -1102778558
-1282985276 -1220931512 792256075 -340699912 1496177106 1760327384
-1068195107 95705193 1286147818 -416474772 745439854 1932457456 -1266423822
-1150051085 1359928308 129778935 1235905400 532121853

The first integer specifies the length of a tuple object. In this case, the
tuple has three element: (13, 17, 19)
The other values (-626177023 to 532121853) are elements of a Set.

I use the following code to process a file:


from time import time
from sets import Set
from string import split
file = 'pathtable_ht.dat'
result = []
start_time = time ()
f=open(file,'r')
for line in f:
        splitres = line.split()
        tuple_size = int(splitres[0])+1
        path_tuple = tuple(splitres[1:tuple_size])
        conflicts = Set(map(int,splitres[tuple_size:-1]))
        # do something with 'path_tuple' and 'conflicts'
        # ... do some processing ...
        result.append(( path_tuple, conflicts))

f.close()
print time() - start_time


The elements (integer objects) in these Sets are being shared between the
sets, in fact, there are as many distinct element as there are lines in the
file (eg 1000 lines -> 1000 distinct set elements). AFAIK, the elements are
stored only once and each Set contains a pointer to the actual object

This works fine with relatively small datasets, but it doesn't work at all
with large datasets (4500 lines, 45000 chars per line).

After a few seconds of loading, all main memory is consumed by the Python
process and the computer starts swapping. After a few more seconds, CPU
usage drops from 99% to 1% and all swap memory is consumed:

Mem:    386540k total,   380848k used,     4692k free,      796k buffers
Swap:   562232k total,   562232k used,        0k free,    27416k cached

At this point, my computer becomes unusable.

I'd like to know if I should buy some more memory (a few GB?) or if it is
possible to make my code more memory efficient.

Thanks in advance,
Stan.


From sjmachin at lexicon.net  Sun May 29 01:57:58 2005
From: sjmachin at lexicon.net (John Machin)
Date: Sun, 29 May 2005 15:57:58 +1000
Subject: How do i read just the last line of a text file?
In-Reply-To: <9v0om2-5fl.ln1@rogers.com>
References: <1117341766.166081.132240@o13g2000cwo.googlegroups.com>
	<9v0om2-5fl.ln1@rogers.com>
Message-ID: <429959E6.9040208@lexicon.net>

Chris F.A. Johnson wrote:

> 
> file = open(argv[1])          ## Open the file given on the command line
> all_lines = file.readlines()  ## Read all the lines

I see your shadowing and raise you one obfuscation:

open = file(argv[1])          ## File the open given on the command line
all_lines = open.readlines()  ## Read all the lines




From http  Wed May  4 14:50:33 2005
From: http (Paul Rubin)
Date: 04 May 2005 11:50:33 -0700
Subject: FTP/TLS connection using python
References: <1115225185.951540.128460@z14g2000cwz.googlegroups.com>
	<4278FFD7.3060200@syscononline.com>
	<1115226327.793691.252410@o13g2000cwo.googlegroups.com>
Message-ID: <7xfyx2akqu.fsf@ruckus.brouhaha.com>

"scrimp" <scrimp212 at yahoo.com> writes:
> Wow, thanks very much Ive been searching on google for a few days now
> and have never seen this yet. Thanks ill take a look at what I can do
> with this

Also look at m2crypto.


From rune.strand at gmail.com  Tue May 17 20:55:28 2005
From: rune.strand at gmail.com (Rune Strand)
Date: 17 May 2005 17:55:28 -0700
Subject: speeding up Python script
In-Reply-To: <3evgolF56gtkU3@individual.net>
References: <3evgolF56gtkU3@individual.net>
Message-ID: <1116377728.138250.323020@z14g2000cwz.googlegroups.com>

Without seeing any code, it's hard to tell, but it's not a wild guess
that 'six inside for loops' may be replaced by more efficient ways ;-)



From timothy at open-networks.net  Thu May  5 18:16:50 2005
From: timothy at open-networks.net (Timothy Smith)
Date: Fri, 06 May 2005 08:16:50 +1000
Subject: py2exe and library.zip
In-Reply-To: <uzmv92v5z.fsf@fitlinxx.com>
References: <mailman.76.1115095357.6583.python-list@python.org>	<5uadnUTTqv6Iw-rfRVn-qw@powergate.ca>	<mailman.129.1115156250.6583.python-list@python.org>	<maednQTrx_iJLOXfRVn-hA@powergate.ca>
	<uzmv92v5z.fsf@fitlinxx.com>
Message-ID: <427A9B52.3000702@open-networks.net>

David Bolen wrote:

>Peter Hansen <peter at engcorp.com> writes:
>
>  
>
>>Do you know that Subversion has (as I understand it) a fairly
>>intelligent binary file comparison routine, and it will (again, as I
>>understand it) not transmit the entire contents of the zip file but
>>would actually send only the portions that have changed?  At least,
>>that's if the file isn't compressed in some way that prevents this
>>algorithm from working well.  (Note to self: check if zip files that
>>can be in sys.path can be compressed, and if py2exe compresses them.)
>>    
>>
>
>Even if the files were compressed, which has a net result similar to
>randomizing the contents and will certainly extend the portion that
>appears "changed", the worst that would happen is that subversion
>(which does use a binary delta algorithm) would end up downloading the
>single file portion of the zip file rather than the smaller change
>within the file.  It should still be efficient.
>
>But to be honest, for something like the OPs purpose, it's not clear
>that an SCM is needed, since all he's trying to accomplish is bring a
>remote copy up to date with the central one.  For that you could just
>publish a location containing the necessary files and have the users
>use something like rsync directly (which is just as efficient in terms
>of a binary delta) to update their own local version.
>
>Of course, if the Subversion server is already in place so it's a
>convenient server, or if more of the user base already has the client
>in place, it should work just about as well.
>
>-- David
>  
>
I've got this working now, and fyi it downloads the entire zip every 
time. and svn appears to be very slow at it to.