test

 writes:

> My locale is set to UTF-8. The command:
> python -c "print u'\u03A9'"
> gives me the desired result and doesn't produce any error.
>
> But when I want to redirect the output to a file I invoke:
> python -c "print u'\u03A9'" > file.txt
> I get an error:
>
> File "", line 1, in 
> UnicodeEncodeError: 'ascii' codec can't encode character u'\u03a9' in
> position 0: ordinal not in range(128)
>
> How to cope with it?

If you print to a terminal Python can use terminal encoding,
but if you redirect to a file Python doesn't know
what encoding to use (e.g. how was encoded existing file) 
and refuses to guess.
You have to specify that encoding explicit:
python -c "print u'\u03A9'.encode('utf-8')" > file.txt

HTH,
Rob

From gnewsg at gmail.com  Fri Dec 21 17:23:19 2007
From: gnewsg at gmail.com (Giampaolo Rodola')
Date: Fri, 21 Dec 2007 14:23:19 -0800 (PST)
Subject: Understanding memory leak reports
References: 

Message-ID: <219ccd88-6656-4b2a-a6f7-42932fdb25b0@l1g2000hsa.googlegroups.com>

On 21 Dic, 20:10, kyoso... at gmail.com wrote:
> On Dec 21, 12:44 pm, "Giampaolo Rodola'"  wrote:
>
>
>
>
>
> > Hi,
> > I'm in a big trouble since I don't know how to find some memory leaks
> > I just discovered in a program of mine.
> > By putting:
>
> > import gc
> > gc.set_debug(gc.DEBUG_LEAK)
>
> > ..at the end of a script which imports a module I wrote it seems I
> > have some memory leaks scattered around.
> > The message printed on screen is the following:
>
> > gc: collectable 
> > gc: collectable 
> > gc: collectable 
> > gc: collectable 
> > gc: collectable 
> > gc: collectable 
> > gc: collectable 
>
> > Since the main module is very big (more than 2800 lines of code) I do
> > not understand which objects are not garbage collected.
> > Is there a way to have a more detailed message to know which objects
> > are not garbage collected?
> > For example "function foo", "method MyClass.bar", "dict my_dict"...
> > "function 00C70E70" and "tuple 00C09900" are too much generic messages
> > which don't give me an idea about where the leak could be.
>
> I've never done this before, but here's what I found while Googling:
>
> Recipe that supposedly gives more info:http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/65333
>
> Another thread on the same topic that looks quite detailed:http://www.thescripts.com/forum/thread22097.html
>
> An article or two on memory leaks in Python:http://utcc.utoronto.ca/~cks/space/blog/python/DebuggingPythonMemoryL...http://www.nightmare.com/medusa/memory-leaks.html
>
> I hope they help.
>
> Mike- Nascondi testo tra virgolette -
>
> - Mostra testo tra virgolette -

Thanks for your search but I haven't actually found a solution yet.
I've tried to search into the cookbook. I found other recipes playing
with the gc module but it seems that none of them are useful for
finding out the names of the objects causing the memory leak.
I've tried to play with gc.get_objects() in the hope to find the real
names manually but it returns a very large number of objects.
If only I could find a way to make gc.get_objects() returning leaking
objects only it would be a step forward...
Does someone have an idea about how doing such a thing?

From robin at NOSPAMreportlab.com  Sat Dec  8 11:46:47 2007
From: robin at NOSPAMreportlab.com (Robin Becker)
Date: Sat, 08 Dec 2007 16:46:47 +0000
Subject: distutils & OS X universal binaries
In-Reply-To: <475ab088$0$19620$9b622d9e@news.freenet.de>
References: <475AA774.7020904@jessikat.plus.net>
	<475ab088$0$19620$9b622d9e@news.freenet.de>
Message-ID: <475ACA77.5030802@jessikat.plus.net>

Martin v. L?wis wrote:
.........
> 
> In the specific case, just use the WORDS_BIGENDIAN macro defined in
> pyconfig.h; it will be defined if the target is bigendian, and
> undefined otherwise. In the case of a universal build, it will be
> undefined in the x86 compiler invocation, and defined in the ppc
> invocation.
> 
> If you are curious as to how it arranges that, read the source.
......

OK I read the source and am slightly puzzled by the code in 
pyconfig.h.in which reads

#ifdef __BIG_ENDIAN__
#define WORDS_BIGENDIAN 1
#else
#ifndef __LITTLE_ENDIAN__
#undef WORDS_BIGENDIAN
#endif
#endif

I'm puzzled why WORDS_BIGENDIAN is undefined if both __BIG_ENDIAN__ and 
__LITTLE_ENDIAN__ are undefined. Surely in that case WORDS_BIGENDIAN 
should be left alone (if it is already defined). If there's a compiler 
for a bigendian architecture which doesn't define the gcc macros the we 
seem to get the wrong result.
-- 
Robin Becker

From senux at senux.com  Sun Dec  9 11:23:37 2007
From: senux at senux.com (Seongsu Lee)
Date: Sun, 9 Dec 2007 08:23:37 -0800 (PST)
Subject: searching a value of a dict (each value is a list)
Message-ID: 

Hi,

I have a dictionary with million keys. Each value in the
dictionary has a list with up to thousand integers.
Follow is a simple example with 5 keys.

dict = {1: [1, 2, 3, 4, 5],
   2: [10, 11, 12],
   900000: [100, 101, 102, 103, 104, 105],
   900001: [20, 21, 22],
   999999: [15, 16, 17, 18, 19]}

I want to find out the key value which has a specific
integer in the list of its value. For example, if I search
104 in the list, 900000 must be returned.

How can I do this with Python? Ideas?

From msunderwd at gmail.com  Wed Dec  5 09:50:00 2007
From: msunderwd at gmail.com (msunderwd at gmail.com)
Date: Wed, 5 Dec 2007 06:50:00 -0800 (PST)
Subject: Tkinter vs. py2exe problem
Message-ID: <4ac67d5e-1969-48c5-8bec-85327f91498b@t47g2000hsc.googlegroups.com>

Having a problem with "compiling" a Tkinter/python program using
py2exe (and pyinstaller, for that matter)...

I have several dialogs that are derived from the tkSimpleDialog.Dialog
class.  These work just fine if run through the interpreter.  When I
"compile" this with py2exe, I don't see any errors, and when I execute
the resulting program, it "appears" to work fine until I invoke one of
the derived dialogs.

Then, I get the "body" of the dialog, but no "OK" or "Cancel" button,
and I get the following exception:

               AttributeError: MyDialog instance has no attribute
'buttonbox'

For reference, MyDialog is declared as follows:
#--------------------------------------------------------------------------------

from Tkinter import *
import tkSimpleDialog
class MyDialog(tkSimpleDialog.Dialog)

#--------------------------------------------------------------------------------

And my setup.py file looks like this:

#--------------------------------------------------------------------------------

from distutils.core import setup
import py2exe

setup(console=['tcgui3.py'])

#--------------------------------------------------------------------------------

I'm invoking py2exe like this:

C:\python setup.py py2exe -p Tkinter -p tkSimpleDialog

??????

From perosine at gmail.com  Sat Dec 29 04:53:38 2007
From: perosine at gmail.com (Petar)
Date: Sat, 29 Dec 2007 01:53:38 -0800 (PST)
Subject: OOP: How to implement listing al 'Employees'.
References: <6a600f6a-76f1-4397-9fc8-6f5bab63913a@f53g2000hsg.googlegroups.com>
	<13nagskoscc5fad@corp.supernews.com>
Message-ID: <05b3c0a6-7985-4f0c-b4a9-5ffa59993b43@v32g2000hsa.googlegroups.com>

On 28 dec, 19:42, Dennis Lee Bieber  wrote:
> On Fri, 28 Dec 2007 04:05:59 -0800 (PST), Petar 
> declaimed the following in comp.lang.python:
>
> > I was just wondering.
>
> > What if you have a 'Employees' class and you want to list all the
> > employees. Currenlty i'm seeing to possibilities:
>
> > - create a 'listAll' function inside the class which returns all the
> > employees in a array.
> > - create multiple instances, putting them in a array, by calling the
> > Employees class multiple times in a loop (thus not creating a listAll
> > function in the class).
>
> > What is the better way of doing this? And should a class always
> > reference only on 'item'?
>
> ? ? ? ? Bottom-up responses...
>
> ? ? ? ? Unless you are contaminated by Java's need for a class to hold
> static functions, classes are just templates for an undefined object.
> You create an instance of the class to create a defined object. It is
> not common in Python to create a class that is not meant to be
> instantiated at least once (something that is just static methods is
> probably easier implemented as an import module with plain functions and
> module level globals).
>
> ? ? ? ? Now, by "name", an "Employees" (plural s) class, to me, implies a
> class to represent a group of employees -- as a group! It would NOT have
> methods or members (both of which are just attributes in generic Python
> hissing) that refer to information about any specific employee -- such
> information should be part of an "Employee" (no S) class.
>
> aDept = Employees(dept="Finance")
> aDept.manager = Employee(name="John Dont", ID=3141596, phone="123-4567")
> aDept.addEmployee(Employee(name=....))
> aDept.addEmployee(Employee(...))
> ...
> ? ? ? ? Note that this does not enforce any particular storage concept. The
> Employees (with the S) class could be using a list to store each
> employee, or a dictionary (maybe keyed by ID), or even an RDBM with a
> join (where one has tables for, say, department, employee, and
> intersection linking department to employee):
>
> select e.* from employees as e
> inner join dept_employee as de
> on de.empID = e.ID
> inner join departments as d
> on d.id = de.deptID
> where d.name = "Finance";
>
> aBody = aDept.employee(id=....)
>
> aDept.removeEmployee(id=...)
>
> aDept.printEmployees()
>
> ? ? ? ? If all you need is a "list" of raw employees, with no meaning
> associated to the list... Then just use a list...
>
> aList = []
> aList.append(Employee(name=...))
> aList.append(Employee(...))
>
> for e in aList:
> ? ? ? ? e.printEmployee()
> --
> ? ? ? ? Wulfraed ? ? ? ?Dennis Lee Bieber ? ? ? ? ? ? ? KD6MOG
> ? ? ? ? wlfr... at ix.netcom.com ? ? ? ? ? ? wulfr... at bestiaria.com
> ? ? ? ? ? ? ? ? HTTP://wlfraed.home.netcom.com/
> ? ? ? ? (Bestiaria Support Staff: ? ? ? ? ? ? ? web-a... at bestiaria.com)
> ? ? ? ? ? ? ? ? HTTP://www.bestiaria.com/

I'm sorry if my question wasn't clear enough. But I think it has been
answered.

Let me explain how I got to this question. I had written een Article
class which handled the articles that I had. On a certain page I
wanted to show all the articles. That got me wondering about what to
do. Should I make a method in my Article.class which returned multiple
articles, or should I just use my current Article.class and fill a
list (with a loop) with articles. The first solution thus meaning
writing another method, the latter method to just use the current
Article.class and call it multiple times.

The post of Dennis made me realize of another solution though. To
create another class called Articles which return multiple articles.
The only problem I forsee with this that's it's gonna be a very empty
class.

Thank you all for your response, it has pointed me in the right
direction.

From bdesth.quelquechose at free.quelquepart.fr  Fri Dec 21 16:46:33 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Fri, 21 Dec 2007 22:46:33 +0100
Subject: detecting property modification
In-Reply-To: 
References: 

Message-ID: <476c343d$0$5462$426a34cc@news.free.fr>

Mangabasi a ?crit :
(snip)
>  
> When you say "The Body gets asked for the value of the attribute" that
> means that Body's __dict__ is being asked to provide a value
> corresponding to its 'pos' key, right?

Wrong. That means that attribute lookup rules are invoked, which may *or 
not* end up calling the Body *intance*'s __dict__ __setitem__ method to 
be called. Anyway:

>  Now I may want to ask a more
> specific question here.  How do I modify Body's __dict__ so that I can
> perform a task when __getitem__ method of the __dict__ is called?

This still won't solve your problem. What you want to trace are method 
calls on the objects returned by attribute lookup on instances of Body - 
not calls to instances __dict__ methods. In your example, what you want 
to trace are calls to pos.__getitem__, not calls to b.__dict__.__getitem__.

And if you what you really want is to trace any mutator call to any 
arbitrary object that may become an attribute of b, then I'm afraid 
you're in for a hard time...

From nobody at heavilyweeded.com  Fri Dec 21 20:14:52 2007
From: nobody at heavilyweeded.com (Anton Tropashko)
Date: Fri, 21 Dec 2007 19:14:52 -0600
Subject: 2.5.1 rpms?
In-Reply-To: <467d0168-d3d2-464b-ba14-46741dce1437@a35g2000prf.googlegroups.com>
References: <467d0168-d3d2-464b-ba14-46741dce1437@a35g2000prf.googlegroups.com>
Message-ID: 

gamename wrote:
> Hi,
> 
> Where can I find python 2.5.1 rpm's for redhat9 and fedora6/7?

did you check on the fedora7 dvd?

btw building from sources if completely straigtforward (meaning that it 
does not build character and leaves your with a sense of accomplishment 
the way building x.org code does)

From sean.berry at cox.net  Tue Dec 18 14:41:12 2007
From: sean.berry at cox.net (Breal)
Date: Tue, 18 Dec 2007 11:41:12 -0800 (PST)
Subject: Funny python cartoon... hope it's not a repost
Message-ID: <231a52e2-3ce4-490f-a519-bed52201ba6d@i29g2000prf.googlegroups.com>

http://xkcd.com/353/

From martin at v.loewis.de  Fri Dec 28 04:58:37 2007
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Fri, 28 Dec 2007 10:58:37 +0100
Subject: Python DLL in Windows Folder
In-Reply-To: 
References: <533b7d320712230652w6bd4e90dv905d7112d337d0fd@mail.gmail.com>	<47744b3a$0$32140$9b622d9e@news.freenet.de>		<477467f9$0$20364$9b622d9e@news.freenet.de>

Message-ID: <4774c8ce$0$4658$9b622d9e@news.freenet.de>

> As I said before, I know how futile it is to argue that Python should
> change it's behaviour.  I'm not going to waste my time telling you what
> to do.  If you really want to know how side-by-side installation works,
> you can try reading the Windows SDK documentation.

I did, and determined that it's not possible. We would have to use
assembly manifests, and can't, as the tool chain doesn't support them.

> No, simply by changing the name you've prevented backwards compatiblity
> with the old DLL. 

First, the requirement for backwards compatibility is not normative.
Section 2.6 is entitled "Install any shared files that are not
side-by-side to the correct locations". python25.dll, as a matter of
fact, *is* a shared file that is not side-by-side; the *only* location
I can install in according to 2.6 is the System folder.

> You can't argue you're trying to maintain backwards
> compatibilty with an old DLL when you've already broken compatibility
> with it.

Furthermore, it says "to ensure backward compatibility with those
applications", not "to ensure backward compatibility with the old DLL".
I'm not trying to maintain compatibility with the binaries of those
applications, but with their source.

> Since the existing applications have to be rebuilt to use the
> new DLL they also can be changed to use it from a new shared location.

No, they can't, because there is not enough manpower available to change
them.

Regards,
Martin

From pavlovevidence at gmail.com  Wed Dec 19 17:13:57 2007
From: pavlovevidence at gmail.com (Carl Banks)
Date: Wed, 19 Dec 2007 14:13:57 -0800 (PST)
Subject: In an inherited class, "embedded" classes is referenced?
References: <877ijabcpt.fsf@jamie.razor.dk>
Message-ID: 

On Dec 19, 4:23 pm, Christian Joergensen  wrote:
> Hello
>
> I stumpled upon this "feature" during my work tonight, and found it
> a bit confusing:
>
> >>> class A(object):
>
> ...     class C:
> ...         foobar = 42
> ...>>> class B(A): pass
> ...
> >>> A.C
>
> >>> B.C
>
> >>> B.C.foobar = 60
> >>> A.C.foobar
>
> 60
>
> When I inherit B from A, I would expect that A.C and B.C would be two
> different classes? But apparently not.

No, when a class inherits a class member from a subclass, both classes
reference the same object.  This is true of any object: classes,
lists, sets, etc.  For instance, if you were to do this,

class A(object):
    class C(object): pass
    d = [1,2,3,4]
    e = set(("a","b","c","d"))

class B(A):
    pass

Then you would find that

A.C is B.C
A.d is B.d
A.e is B.e

They are all the same object.

Perhaps you are misled by the example methods?  Even them, the same
function object is referenced by both classes.  The difference is,
when accessing a method, a class doesn't return the function object
itself, but a method object instead (which is a binding between a
function and a class, used to set the value of "self" when calling
it).

But only functions do something like that, not classes.

> Can anyone give me an explanation? Or a better workaround than
> something along the line of:
>
> >>> B.C = type("C", (object,), {'foobar': 60})

Well you could do this and not bother with the type call (but you'd
still have to do it by hand).

class B(A):
    class C(A.C):
        foobar = 60

Metaclass programming, or at least some clever properties, would be
required to do it automatically.  You could try something like this
(untested) to automatically subclass any class variables that are
instances of type:

class AutoSubclassMetaclass(type):
    def __new__(cls,name,bases,clsdict):
        for key,value in clsdict.iteritems():
            if isinstance(value,type):
                clsdict[key] = type(value.__name__,(value,),{})
        type.__new__(cls,name,bases,clsdict)

class A(object):
    __metaclasS__ = AutoSubclassMetaclass
    class C(object):
        foobar = 40

class B(A):
    pass

Carl Banks

From tinnews at isbd.co.uk  Tue Dec 11 16:15:04 2007
From: tinnews at isbd.co.uk (tinnews at isbd.co.uk)
Date: 11 Dec 2007 21:15:04 GMT
Subject: mailbox.Maildir question/problem
Message-ID: <475efdd8$0$514$bed64819@news.gradwell.net>

I am trying to write a utility to remove empty maildir mailboxes.  It
sounds like this should be very simple but it's proving really
difficult.

I'm doing this on a Fedora 7 system with python 2.5.

The first question is how to detect whether a directory is a maildir
mailbox.  The following code snippet *never* says that a directory is
not a maildir:-

    try:
        x = mailbox.Maildir(dirpath, None, False)
    except:
        print dirpath, "is not a maildir"

The "x = mailbox.Maildir(dirpath, None, False)" always succeeds even
when dirpath is most definitely *not* a maildir (i.e. it doesn't have
cur, new and tmp sub-directories).  It's only when you try calling a
method of x that an exception results.

The second question is how to manage a hierarchy of directories with
maildirs in them.  For example I have:-

    Mail
    Mail/bcs
    Mail/ben
    Mail/cg
    Mail/spam
    Mail/usenet

Where bcs  ben  cg  spam  usenet are maildir mailboxes, I can't get
python's mailbox.Maildir to do anything useful with them at all.

My test program currently is:-

    #!/usr/bin/python
    #
    #
    # Remove empty maildir mailboxes
    #
    import mailbox
    import os.path
    import sys

    def checkDir(dummy, dirpath, filelist):
        print "Directory is ", dirpath
        try:
            x = mailbox.Maildir(dirpath, None, False).list_folders()
        except:
            print dirpath, "is not a maildir"
            return
        for msg in x:
            print msg

    for d in sys.argv[1:]:
       if os.path.isdir(d):
           os.path.walk(d, checkDir, None)

It would seem that the list_folders() method only works with the
Courier style maildirs where the diretory name of the maildir starts
with a dot.  Is there *any* way I can get python to access maildirs
which are not named using this (IMHO stupid) convention?

I know my test program is far from complete but I can't get it to do
anything sensible at present.

-- 
Chris Green

From awnl at arcor.net  Mon Dec  3 05:03:28 2007
From: awnl at arcor.net (Albert Retey)
Date: Mon, 03 Dec 2007 11:03:28 +0100
Subject: Limit Guessing Algorithm
In-Reply-To: <6527e349-27ba-4de4-bc29-75ff4511787c@b40g2000prf.googlegroups.com>
References: <6527e349-27ba-4de4-bc29-75ff4511787c@b40g2000prf.googlegroups.com>
Message-ID: <4753d471$0$16667$9b4e6d93@newsspool3.arcor-online.net>

Hi,
> 
> I'm looking for a piece of code, preferably in Python, that will do
> the following. It will accept a few data points (x,f(x)) of a function
> that converges to some finite value when x converges to infinity. I
> need the algorithm to guess what that limit is, to whatever precision
> it can.
> 
> For example, if the input is:
> 
> [
> [1,8],
> [2,7.5],
> [3,7.25],
> [4,7.125]
> ]
> 
> Then the output will be 7. Or at least something close.
> 
> Does anyone know anything like that?

It is obvious that in general this is an unsolvable problem. But if you 
know for some reason that your series/functions are "well behaved" in 
some sense it still might be possible to do something reasonable and 
there has some work been done on these things. You might e.g. google for 
Wynns epsilon method which gives some examples and references for 
related stuff.

hth,

albert

From tjreedy at udel.edu  Sun Dec  9 22:26:44 2007
From: tjreedy at udel.edu (Terry Reedy)
Date: Sun, 9 Dec 2007 22:26:44 -0500
Subject: Is a "real" C-Python possible?
References: 	<7tOdnRb-5fMW_MHanZ2dnUVZ_tmhnZ2d@comcast.com>

Message-ID: 

"Jack"  wrote in message 
news:vLadnbUkzunUHsHanZ2dnUVZ_judnZ2d at comcast.com...
| The second articple does have a column for Psyco. It helps in some areas
| but still not good enough to stand up against Java. Plus, Psyco is not 
the
| main stream and has stopped development.

It further development is effectively part of the PyPy project, which 
includes some jit work.

| I'm also wondering, if Psyco is the right way to do, any reason it's not
| being integrated into standard Python?

It does not accelerate everything and may slow somethings, it was (is?) 
not compatible with everything, it bloats space requirements, it competes 
with C/Fortran coded extensions (such as NumPy), it was originally I386 
specific, its development cycle was much faster than Python's release 
cycle, ...

The cutoff between what goes in the core/stdlib is arbitrary in borderline 
cases, but some cutoff is necessary.

tjr

From mark.english at rbccm.com  Wed Dec 19 04:28:03 2007
From: mark.english at rbccm.com (MarkE)
Date: Wed, 19 Dec 2007 01:28:03 -0800 (PST)
Subject: operator module isSequenceType with builtin set produces False
References:  

	<15e46d41-7534-4d9a-8939-bb3a8bf11ca0@e23g2000prf.googlegroups.com>
Message-ID: 

On 19 Dec, 10:03, MarkE  wrote:
> > No, sets aren't sequences, as they have no order. Same as dicts, which
> > aren't sequences either.
>
> Oops. I was under the misapprehension that they were sequences
I realise now that this is even explicitly documented:
http://docs.python.org/lib/typesseq.html
"There are six sequence types: strings, Unicode strings, lists,
tuples, buffers, and xrange objects."

> Is there a short Pythonic way to determine whether an object is
> iterable (iteratable ??) that I haven't thought of (getattr(obj,
> '__iter__') ?). Would operator.isIterable() be at all a useful
> addition ?
And here I probably meant container (although the url says sequence
when the article meant container, bit like me):
http://docs.python.org/ref/sequence-types.html
"Containers usually are sequences (such as lists or tuples) or
mappings (like dictionaries), but can represent other containers as
well"

So same question, but perhaps "isContainer()" rather than
"isIterable()"

From sgeiger at ncee.net  Thu Dec 20 03:47:48 2007
From: sgeiger at ncee.net (Shane Geiger)
Date: Thu, 20 Dec 2007 02:47:48 -0600
Subject: Problem untaring python2.5
In-Reply-To: <31e0c4b8-e720-4340-8ea5-aa57f89245b3@w56g2000hsf.googlegroups.com>
References: 	<8e5c1fd6-8060-4df0-80d3-51a716693dc5@i29g2000prf.googlegroups.com>
	<31e0c4b8-e720-4340-8ea5-aa57f89245b3@w56g2000hsf.googlegroups.com>
Message-ID: <476A2C34.4090403@ncee.net>

You might want to try an all-python implementation for sanity testing. 

I haven't tested this snippet much.  I am not sure it handles nested
files all that well. 

import tarfile
tar = tarfile.open("TarTest.tar.gz2", "r:gz")     #  other options:
"r:bz2", and ??
file_list = tar.getnames()

import os
os.mkdir('new_dir')
# write the files out to new files
for fname in tar.getnames():
    # extract/decompress the data of each file
    data = tar.extractfile(fname).read()
    # optionally change the filename
    new_file = "new_dir/" + fname
    print "File %s written!" % new_file
    # write the decompressed data to a file
    fout = open(new_file, "w")
    fout.write(data)
    fout.close()

# done, close the tar file ...
tar.close()

> On Dec 19, 12:16 pm, samuel.pro... at gmail.com wrote:
>   
>> Hello,
>>
>> It is not possible to give sharp hints without more relevant
>> information like:
>> - What is your platform?
>> - Which version of python?
>> - What is the version of: $tar--version (GNUtar, other proprietarytar, according to my personal experience, AIXtarmay fail)
>> - Is your disk full or do you have the correct permissions with your
>> current user?
>>
>> ++
>>
>> Sam
>>     
>
> Hi Sam ,
> I am using windows server 2003, python2.5.1 and version 1.16 of tar
>
> and as per disk full issues i dont think that my systems hard disk is
> full
>
>   

-- 
Shane Geiger
IT Director
National Council on Economic Education
sgeiger at ncee.net  |  402-438-8958  |  http://www.ncee.net

Leading the Campaign for Economic and Financial Literacy

From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Fri Dec  7 07:22:02 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Fri, 07 Dec 2007 13:22:02 +0100
Subject: File to dict
In-Reply-To: 
References: 
Message-ID: <47593ae3$0$14897$426a74cc@news.free.fr>

mrkafk at gmail.com a ?crit :
> Hello everyone,

(snip)

> Say, I would like to transform a file containing entries like
> the following into a list of lists with doublecolon treated as
> separators, i.e. this:
> 
> tm:$1$aaaa$bbbb:1010:6::/home/owner1/imap/domain1.tld/tm:/sbin/nologin
> 
> would get transformed into this:
> 
> [ ['tm', '$1$aaaa$bbbb', '1010', '6', , '/home/owner1/imap/domain1.tld/
> tm', '/sbin/nologin'] [...] [...] ]

The csv module is your friend.

From danb_83 at yahoo.com  Sat Dec 29 15:31:49 2007
From: danb_83 at yahoo.com (Dan Bishop)
Date: Sat, 29 Dec 2007 12:31:49 -0800 (PST)
Subject: Optional code segment delimiter?
References: 

Message-ID: <0c5ef982-309d-4ba9-b783-c3af814d76e3@s8g2000prg.googlegroups.com>

On Dec 29, 12:41 pm, Matt Nordhoff  wrote:
> xkenneth wrote:
> > Is it possible to use optional delimiters other than tab and colons?
>
> > For example:
>
> >      if this==1 {
> >           print this
> >      }
>
> 
>
> Heheheh..

Wow!  I never thought of (ab)using encodings like that.  And sure
enough, it's perfectly legal to write:

# -*- encoding: rot-13 -*-

cevag h"Uryyb, jbeyq!"

From cjw at sympatico.ca  Sat Dec  8 10:23:59 2007
From: cjw at sympatico.ca (Colin J. Williams)
Date: Sat, 08 Dec 2007 10:23:59 -0500
Subject: a Python person's experience with Ruby
In-Reply-To: <17975.12459.qm@web33510.mail.mud.yahoo.com>
References: <17975.12459.qm@web33510.mail.mud.yahoo.com>
Message-ID: <475AB70F.4060408@sympatico.ca>

Steve Howell wrote:>
Thanks for the interesting comparison.

[snip]
>   3) I actually like being able to omit parentheses in
> method definitions and method calls.  In Ruby you can
> express "add(3,5,7)" as both "add(3,5,7)" and "add 3,
> 5, 7."  The latter syntax is obviously more error
> prone, but I don't think I've ever actually gotten bit
> by it, and the code appears more clean to me.
> 
[snip]

I'm not sure that I like add 3, 5, 7

but it would be nice to be able to drop 
the parentheses
when no argument is required.

Thus:         close;
could replace close();

Colin W.

From bdesth.quelquechose at free.quelquepart.fr  Fri Dec 28 13:23:53 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Fri, 28 Dec 2007 19:23:53 +0100
Subject: Compiler or stg.  to get exe!
In-Reply-To: 
References: 
Message-ID: <47753f39$0$32454$426a74cc@news.free.fr>

SMALLp a ?crit :
> Hy!
> I have question. After short goggling, I haven't found anything good. So 
> my question is:
> I wrote a program in python and i Get .py files and some .pyc in working 
> folder. Now i want program tu run under windows, so i need to get exe 
> files or something.

Strictly speaking, you don't *need* this. Now depending on the target 
audience of your app, you may want to provide a "black-box" bundle of 
your app and all the dependencies, including the python runtime. AFAICT 
(not being a Window user), py2exe might be what you're looking for.

> And what do i need to do to make program for linux. (stg. like .deb 
> package)

A debian package (or any other similar stuff) is not a "program", it's 
distribution system format. You'll find relevant doc on the related 
distribution system. Note that almost each linux distro has it's own 
system...

Anyway, since part of your audience may include "power users", don't 
forget to also provide either a simpler distrib using either distutils 
and/or setuptools (Python Egg):
http://docs.python.org/dist/dist.html
http://peak.telecommunity.com/DevCenter/setuptools
http://peak.telecommunity.com/DevCenter/PythonEggs

HTH

From showell30 at yahoo.com  Sat Dec  8 20:25:12 2007
From: showell30 at yahoo.com (Steve Howell)
Date: Sat, 8 Dec 2007 17:25:12 -0800 (PST)
Subject: auto-increment operator - why no syntax error?
In-Reply-To: <5s0tqlF16tekoU2@mid.uni-berlin.de>
Message-ID: <136678.20766.qm@web33512.mail.mud.yahoo.com>

--- Marc 'BlackJack' Rintsch  wrote:

> On Sat, 08 Dec 2007 16:58:25 -0800, Karthik Gurusamy
> wrote:
> 
> > Why are the following accepted even without a
> warning about syntax
> > error?
> > (I would expect the python grammar should catch
> these kind of syntax
> > errors)
> >>>> 2 * +++++ n

Does pychecker catch this?  Although I see why the
language allows it, my guess is that most people chain
unary plus operations accidentally, not intentionally.

      ____________________________________________________________________________________
Never miss a thing.  Make Yahoo your home page. 
http://www.yahoo.com/r/hs

From horpner at yahoo.com  Wed Dec 12 13:07:12 2007
From: horpner at yahoo.com (Neil Cerutti)
Date: Wed, 12 Dec 2007 18:07:12 GMT
Subject: __init__ method for containers
References: 
	<2599b4c4-fa78-4047-89a6-d6803e9c52f0@l1g2000hsa.googlegroups.com>
Message-ID: 

On 2007-12-12, Raymond Hettinger  wrote:
> On Dec 12, 7:22 am, Neil Cerutti  wrote:
>> List and deque disagree on what __init__ does. Which one is
>> right?
>
> File a bug report and assign to me.

Will do. Registration in progress.

-- 
Neil Cerutti

From mensanator at aol.com  Sat Dec 15 12:42:06 2007
From: mensanator at aol.com (mensanator at aol.com)
Date: Sat, 15 Dec 2007 09:42:06 -0800 (PST)
Subject: Convert a sequence of bits to a bit-string
References:  
	<90d507ea-08cb-4311-9b44-57f6cccd4918@i29g2000prf.googlegroups.com> 

Message-ID: 

On Dec 15, 10:39?am, te... at york.ac.uk wrote:
> First of all I'd like to thank you all for your advices. Before I check all
> your hints I want to clarify what I'm trying to do. The question says
> "write a function that takes a sequence of bits as an input and return how
> many 1s are in the sequence", nothing more.

Except that there is no such thing in Python
as there is no binary representation. You could
enter a sequence of characters, where each character
represents a bit, such as s='1111' for 15.

> This is quite simple for string
> inputs but tricky for "number inputs". I've notice that if I try to convert
> a number starting with 0 to a string using str(), then I take a string
> representing another number (probably converted to decimal). So what I want
> to do is to write a generic version of a function that takes as an input a
> sequence of 1s and 0s in any format.

That's probably not what you want. You don't want
to enter 1's and 0's in any format, you want to
accept a number in any format. Remember, the format
does not change the number (assuming you always use
the correct format representation).

So if the input is s=017 (octal), the number
is fifteen. If s=0xf (hexadecimal), the number
is fifteen. If s=15 (decimal), the number is
fifteen.

Once you've got that straight, you can calculate
the base 2 representation of fifteen and count
the ones.

> The only way I can think to achieve
> that is by converting the "number inputs" to a string and then using the
> count() function.

Do you know how base conversion is done manually?

In base 2, each bit represents a power of 2, and
there are only two possibilities for each digit,
0 and 1. So, in base 2, the digit positions
are

... 2**7 2**6 2**5 2**4 2**3 2**2 2**1 2**0
    128  64   32   16   8    4    2    1

Now, for fifteen, what's the largest position
that doesn't exceed 15? The fourth (counting
from the right). Therefore, there's a 1 bit
in position four and all higher positions
would be 0. At this point, we have '1???'.

To get the next lower position, subtract 8
from fifteen, leaving seven. Now repeat
until you fill all positions, eventually
reaching '1111'.

But, if the highest position that doesn't
exceed skips some positions, then those
positions have '0'.

So for nine, the highest position is still
the fourth, giving us '1???'. But after
subtracting eight, we're left with one.

But the highest position not exceeding one
is the first, giving us '1??1'. We skipped
positions 2 & 3, so they must be '0' making
nine '1001' in base 2.

Now all you have to do is count the 1's.

However, if doing

> Thomas

From martin at v.loewis.de  Wed Dec 19 14:27:53 2007
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Wed, 19 Dec 2007 20:27:53 +0100
Subject: Static linking of python and pyqt
In-Reply-To: <200712191326.51407.dahlbokum@intes.de>
References: 
	<200712191147.45256.dahlbokum@intes.de>
	<4768FB1E.3040204@v.loewis.de>
	<200712191326.51407.dahlbokum@intes.de>
Message-ID: <476970B9.9000805@v.loewis.de>

> I need an environment that can be delivered to our customers without 
> installing python, qt and pyqt. We want to provide the complete package.
> In order to do so I need to link at least python and qt. How can this be done?

You should link all extension modules into the Python executable,
through Setup.local

> Of course a complete package with python, qt and pyqt would be the best 
> solution but there seem to be even more complications that way. If you can 
> help me with this I would be very grateful.

Not sure. You didn't explain what the precise problem is, so it's
difficult to help in correcting it.

Regards,
Martin

From george.sakkis at gmail.com  Fri Dec 14 11:55:55 2007
From: george.sakkis at gmail.com (George Sakkis)
Date: Fri, 14 Dec 2007 08:55:55 -0800 (PST)
Subject: Job Offer: Python Ninja or Pirate!
References: 
	 <475d8f43$0$31216$9b622d9e@news.freenet.de> 

	<475e0cf6$0$19333$9b622d9e@news.freenet.de>
	<7bcbdd36-f4f1-419f-9866-b9c06dcf9b38@b1g2000pra.googlegroups.com>
	<476299ee$0$4006$9b622d9e@news.freenet.de>
Message-ID: <91a9d2fc-3e22-4d11-9a62-8b21829536d9@d21g2000prf.googlegroups.com>

On Dec 14, 9:57 am, Stargaming  wrote:
> On Tue, 11 Dec 2007 08:57:16 -0800, George Sakkis wrote:

> > Closer, but still wrong; for some weird reason, __import__ for modules
> > in packages returns the top level package by default; you have to use
> > the 'fromlist' argument:
>
> >>>> __import__('xml.dom.minidom') is __import__('xml')
> > True
>
> >>>> __import__('xml.dom.minidom', fromlist=True)
> >  > minidom.pyc'>
>
> > George
>
> No, it's perfectly right::
>
>     >>> __import__('xml.dom.minidom').dom.minidom
>          '/usr/lib/python2.5/xml/dom/minidom.pyc'>

Sure, if you remember to repeat all.the.subpackages.after.the.top.
Instead of __import__ I use a more intuitive and general version that
doesn't stop at module boundaries but acts as getattr() within a
module:

for name in ['xml',
             'xml.dom',
             'xml.dom.minidom',
             'xml.dom.minidom.parse',
             'xml.dom.minidom.parse.__name__']:
    print '%s: %r\n' % (name, import_name(name))

#### output

xml: 

xml.dom: 

xml.dom.minidom: 

xml.dom.minidom.parse: 

xml.dom.minidom.parse.__name__: 'parse'

#=== import_name =============================

def import_name(name, globals={}, locals={}):
    prefix,sep,tail = name.partition('.')
    obj = __import__(prefix, globals, locals)
    is_module = True
    while sep:
        head,sep,tail = tail.partition('.')
        if is_module:
            prefix += '.' + head
            try: __import__(prefix, globals, locals)
            except ImportError: is_module = False
        try: obj = getattr(obj,head)
        except AttributeError:
            raise ImportError('No name %s' % name)
    return obj

George

From cwitts at gmail.com  Thu Dec 13 09:50:20 2007
From: cwitts at gmail.com (Chris)
Date: Thu, 13 Dec 2007 06:50:20 -0800 (PST)
Subject: determining bytes read from a file.
References: <1918acae-1417-4b88-84ee-3d751d619f77@a35g2000prf.googlegroups.com>
	<5scm02F17rr6tU1@mid.uni-berlin.de>

Message-ID: <99513d86-0a03-4344-8a48-fbe566593273@e25g2000prg.googlegroups.com>

A couple potential optimizations:

>
> # create the member variable name.
> mem_var_name = options.inputfilename
> mem_var_name = mem_var_name.replace(' ','_')
> mem_var_name = mem_var_name.replace('.','_')
>

mem_var_name = options.inputfilename.replace(' ','_').replace('.','_')
No need to assign it 3 times.

> while i < len(hex_data):
>         outfile_c.write( "0x%c%c" % ( hex_data[i],hex_data[i+1] ) )
>         i += 2
>         if i != len(hex_data):
>                 outfile_c.write(",")
>         if i % 32 == 0:
>                 outfile_c.write("\n")

This could be re-written as such:

for x in xrange(0, len(hex_data), 32):
    output_c.write('%s\n' % ','.join(['0x%s'%''.join(['%c'%a for a in
hex_data[x:x+32][i:i+2]]) for i in xrange(0, 32, 2)]

From sjmachin at lexicon.net  Wed Dec 12 15:34:05 2007
From: sjmachin at lexicon.net (John Machin)
Date: Wed, 12 Dec 2007 12:34:05 -0800 (PST)
Subject: Is anyone happy with csv module?
References: <15ab759b-0aec-45dd-88b9-c446c2b7d299@e10g2000prf.googlegroups.com>
	<88102e1b-c54a-4216-a71e-017a0a243aeb@b40g2000prf.googlegroups.com> 
	<516581dc-a2d7-452a-8988-89c381e086e8@r29g2000hsg.googlegroups.com> 

Message-ID: 

On Dec 13, 12:58 am, Neil Cerutti  wrote:
> On 2007-12-12, John Machin  wrote:
>
> >> It's clear that I am thinking to completely different usages
> >> for CSV than what most people in this thread. I use csv to
> >> export and import numerical data columns to and from
> >> spreadsheets.
>
> > For that purpose, CSV files are the utter pox and then some.
> > Consider using xlrd and xlwt (nee pyexcelerator) to read (resp.
> > write) XLS files directly.
>
> I can vouch for that advice. I was exporting .xls files to csv
> text files for over a year before I tried the xlrd solution--the
> whole process is less cumbersome now, though it was bewildering
> at first working with Excel in Python. Actually, surprises still
> crop up now and then, mostly to do with cell types.

Hi Neil, I'd be interested in hearing from you what caused the initial
bewilderment with xlrd, and could it have been reduced by better
documentation? What kinds of surprises?

> The advantage
> of working with csv was that everything was a string.

It depends of your point of view. I'd regard that as a
DISadvantage :-) With xlrd, if you have no expectation about the type
of data in a cell, but need/want to know, xlrd will tell you. If you
do have an expectation, you can check if actual == expected.

Here's an example. Create a tiny csv file with dates in a format
that's NOT appropriate to your locale (e.g. if you are in the USA,
like the ddmmyyyy_dates.csv below). Open it with Excel by double-
clicking on the name in Windows Explorer. Make the column twice its
initial width. You'll notice some of the data (about 60% in a large
dataset with approx. uniform distribution e.g. birth-dates) is LEFT-
justified (text) and the remainder is RIGHT-justified (date). If you
were given the xls file in that state, using xlrd the problem could be
detected and worked around. Alternatively, go into user emulation
mode: "fix" the problem with some formulas, forget immediately what
you did, save the result as a new csv file, pass that on to the next
user without a murmur, and delete the original csv file and the xls
file.

This is based on a true story, with one difference: the dates in the
original csv file were formatted correctly for the DD/MM/YYYY-using
locale; however Excel 97 would ignore the locale and assume MM/DD/YYYY
if you opened the file from within Excel instead of double-clicking in
Explorer (or vice versa; I forget which).

8<== ddmmyyyy_dates.csv
01/01/2007
31/01/2007
01/12/2007
31/12/2007
8<== mmddyyyy_dates.csv
01/01/2007
01/31/2007
12/01/2007
12/31/2007
8<==

Cheers,
John

From showell30 at yahoo.com  Sun Dec  9 10:49:25 2007
From: showell30 at yahoo.com (Steve Howell)
Date: Sun, 9 Dec 2007 07:49:25 -0800 (PST)
Subject: Serializing Python compiled code.
In-Reply-To: 
Message-ID: <680307.20033.qm@web33506.mail.mud.yahoo.com>

--- renjipanicker at gmail.com wrote:

> In a C++ application having a Python interpreter
> embedded, is it
> possible to compile a small Python snippet into
> object code and
> serialize the compiled object code to, for example,
> a database? I am
> exploring the possibility of writing a data driven
> application, where
> small-sized object code can be read from a database
> and executed.
> Keeping aside all other considerations such as
> security, etc for a
> moment, is this feasible?
> 

This might be too coarse for you, but you could
serialize the .pyc files that get created from your
modules.  If you drop a .pyc file into a directory,
and you make sure that you don't have a corresponding
.py file of the same basename, and new date, in the
directory, then Python will still execute it.

This is a bit of a gotcha of Python for naive users,
but this feature helps in use cases like yours, where
you don't want to pay the lexing step, and for
whatever reason, you don't want to simply use the file
system as your store for code.

      ____________________________________________________________________________________
Never miss a thing.  Make Yahoo your home page. 
http://www.yahoo.com/r/hs

From sjmachin at lexicon.net  Tue Dec 11 19:24:37 2007
From: sjmachin at lexicon.net (John Machin)
Date: Tue, 11 Dec 2007 16:24:37 -0800 (PST)
Subject: Help needed with python unicode cgi-bin script
References: 
	<475cefe8$0$31165$9b622d9e@news.freenet.de> 
	<8tj7j.5048$bW.4346@trnddc07>
	<24f3c1af-bf57-4b94-8d02-d7e956764f90@s8g2000prg.googlegroups.com>

	<0f09d97f-d742-4a3e-a459-91e730748d7e@b1g2000pra.googlegroups.com>
	<_vE7j.5156$bW.2309@trnddc07>
	<475f1dc4$0$19340$9b622d9e@news.freenet.de> 

Message-ID: 

On Dec 12, 11:06 am, "weheh"  wrote:
> p.s. I modified the code to break things out more explicitly:
>
> #!C:/Program Files/Python23/python.exe
> import cgi, cgitb
> import sys, codecs
> import os,msvcrt
>
> cgitb.enable()
>
> print u"""Content-Type: text/html
>
>  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" >
>  xml:lang="en,sp,fr">
> 
> 

While enjoying the dynamic feature of Python I find it difficult to refactor 
code without breaking it. For example, if I modify a function to take more 
arguments, or arguments of different types, I'll need to manually find out 
all places where the function is called and make sure I modify them all, 
unlike in C/Java, where the compiler will do the work of checking function 
signatures, etc. I suppose there isn't a strict mode in Python. It would be 
helpful though, when I don't need things to be so dynamic, and this is often 
the case, when it comes to function arguments and return values, for 
example. Even a module level or function level flag would be very helpful to 
find broken code. Or, are there any third party tools that do this? 

From showell30 at yahoo.com  Sat Dec  8 19:19:50 2007
From: showell30 at yahoo.com (Steve Howell)
Date: Sat, 8 Dec 2007 16:19:50 -0800 (PST)
Subject: a Python person's experience with Ruby
In-Reply-To: <475b2a25$0$7421$afc38c87@news.optusnet.com.au>
Message-ID: <14753.87508.qm@web33514.mail.mud.yahoo.com>

--- Richard Jones 
wrote:
> 
> class A(object):
>     def set_a(self, value):
>         self._a = value
>     a = property(lambda self: self._a, set_a)
> 
> Note that this differs from a regular attribute
> because "a" is not deletable
> from instances (the property defines no deleter).
> 

The use case I was actually considering actually
doesn't require much magic in either language.

I commonly want to write code like this:

   e = Employee('jim', 'accounting', 50)
   print e.name
   print e.department
   print e.salary
   e.update_salary(percent=.10)
   e.update_salary(percent=.5)

I want the name, department, and salary always exposed
to me.  But suppose in Employee's innards, it keeps a
cache of the number of raises Jim has been given, and
this cache is very implementation-sensitive.

The way I achieve this is different in each language:

  1) In Python I get name, department, and salary
exposed for free, but I need to make a more conscious
decision to hide e.compensation_tracker, which I do by
renaming it to e.__compensation_tracker.

  2) In Ruby I get compensation_tracker fully
hidden/encapsulated for free, but I have to make a
more conscious decision to expose name, department,
and salary, which I get by saying:

   attr_reader :name, :department, :salary

Obviously, things can get a lot more complicated than
this scenario, and I think both languages are pretty
flexible, but flexible in a different way.

      ____________________________________________________________________________________
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know-it-all with Yahoo! Mobile.  Try it now.  http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ 

From k_vinoj at yahoo.com  Mon Dec 10 00:56:25 2007
From: k_vinoj at yahoo.com (vinoj davis)
Date: Mon, 10 Dec 2007 11:26:25 +0530 (IST)
Subject: Converting HTML TO PDF using PYTHON
Message-ID: <641899.27646.qm@web94603.mail.in2.yahoo.com>

An HTML attachment was scrubbed...
URL: 

From iddw at hotmail.com  Thu Dec 13 20:05:54 2007
From: iddw at hotmail.com (Dave Hansen)
Date: Thu, 13 Dec 2007 17:05:54 -0800 (PST)
Subject: Finding overlapping times...
References: 
Message-ID: <5b9ed697-a4e9-4a62-b1a2-1437fd0bafde@t1g2000pra.googlegroups.com>

On Dec 13, 5:45 pm, Breal  wrote:
> I have a list that looks like the following
> [(100000, 100010), (100005, 100007), (100009, 100015)]
>
> I would like to be able to determine which of these overlap each
> other.  So, in this case, tuple 1 overlaps with tuples 2 and 3.  Tuple
> 2 overlaps with 1.  Tuple 3 overlaps with tuple 1.
>
> In my scenario I would have hundreds, if not thousands of these
> ranges.  Any nice pythonic way to do this?
>

What are you going to do with the result?  Do you need to know if
there are any overlaps?  The number of overlaps?  Given any particular
range, what ranges overlap?

There's really no way, other than to compare each range.  Note that
the relationship is symmetric, so you can save half you work.  A
simple-minded approach might be

---

def overlaps(t1, t2):
    return (t2[1] >= t1[0]) and (t2[0] <= t1[1])

in_data =  [(100000, 100010), (100005, 100007), (100009, 100015)]

while (len(in_data) > 1):
    target = in_data.pop(0)
    for test in in_data:
        if overlaps(target,test):
            print "%s overlaps with %s" % (repr(target),repr(test))

---

If you want to save the information for later retrieval, you could
build a dictionary with the ranges as keys:

---
ovr_map = {}

while len(in_data) > 1:
    target = in_data.pop(0)
    for test in in_data:
        if overlaps(target,test):
            if ovr_map.has_key(target): ovr_map[target].append(test)
            else: ovr_map[target] = [test]
            if ovr_map.has_key(test): ovr_map[test].append(target)
            else: ovr_map[test] = [target]

for target in ovr_map.keys():
    for test in ovr_map[target]:
        print "%s overlaps with %s" % (repr(target),repr(test))
---

I don't know that there isn't a more Pythonic way, I'm not much of an
expert.  HTH,

   -=Dave

From deets at nospam.web.de  Tue Dec 11 13:08:05 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Tue, 11 Dec 2007 19:08:05 +0100
Subject: Matching XML Tag Contents with Regex
References: <38ea9cbc-a222-4c0f-ba2d-f6b415d02fb1@d27g2000prf.googlegroups.com>
	<4e09aece-f39f-4c5b-a966-ac6abfb3f7de@p69g2000hsa.googlegroups.com>
	<3cdbc226-bb3a-4945-949b-a0ec28b0e5c0@e6g2000prf.googlegroups.com>
Message-ID: <5s8205F186vhuU1@mid.uni-berlin.de>

Chris wrote:

> On Dec 11, 11:41 am, garage  wrote:
>> > Is what I'm trying to do possible with Python's Regex library? Is
>> > there an error in my Regex?
>>
>> Search for '*?' onhttp://docs.python.org/lib/re-syntax.html.
>>
>> To get around the greedy single match, you can add a question mark
>> after the asterisk in the 'content' portion the the markup.  This
>> causes it to take the shortest match, instead of the longest. eg
>>
>> <%(tagName)s\s[^>]*>[.\n\r\w\s\d\D\S\W]*?[^(%(tagName)s)]*
>>
>> There's still some funkiness in the regex and logic, but this gives
>> you the three matches
> 
> Thanks, that's pretty close to what I was looking for. How would I
> filter out tags that don't have certain text in the contents? I'm
> running into the same issue again. For instance, if I use the regex:
> 
> <%(tagName)s\s[^>]*>[.\n\r\w\s\d\D\S\W]*?(targettext)+[^(%
> (tagName)s)]*
> 
> each match will include "targettext". However, some matches will still
> include , presumably from the tags which didn't contain
> targettext.

Stop using the wrong tool for the job. Use lxml or BeautifulSoup to parse &
access HTML. 

Diez

From gherron at islandtraining.com  Tue Dec  4 18:51:18 2007
From: gherron at islandtraining.com (Gary Herron)
Date: Tue, 04 Dec 2007 15:51:18 -0800
Subject: Python Class Best Practice
In-Reply-To: <20071204181804.70edef0a@atomizer.opensourcebeef.net>
References: <20071204181804.70edef0a@atomizer.opensourcebeef.net>
Message-ID: <4755E7F6.7030008@islandtraining.com>

Rod Person wrote:
> I've been doing python programming for about 2 years as a hobby and now
> I'm finally able to use it at work in an enterprise environment. Since
> I will be creating the base classes and libraries I wondering which why
> is consider best when creating python classes:
>
> 1:
> class Foo(object):
>   member1=''
>   member2=0
>  
>   def __init__(self,member1='',member2=0):
>     self.member1 = member1
>     self.member2 = member2
>
> 2:
> class Foo(object):
>     def  __init__(self,member1='',member2=0):
>         self.member1 = member1
>         self.member2 = member2
>
>
Both examples will store values for member1 and member2 in every
instance.  Any code that accesses self.member1 (or 2) will get the value
stored in the instance. 

Example 1 which also creates two *class* members of the same name won't
affect the conclusion of the previous paragraph.  The two values in the
class will be shadowed by each instances members of the same name.

But now I need to ask, what did you expect to happen here? 

 * If you thought those two extra assignments in example 1 effected the
execution or storage in the __init__ (or any other method), you were
mistaken.

 * If you really wanted class members (i.e., values shared by ALL
instances), then they really shouldn't have the same name as instance
members.  You would surely confuse them at some point.

 * If you *really* wanted two class members *AND* two instance members
with the same names, (WHY???) then example 1 will do so, but you'll have
to access the instance members as self.member1 and the class members as
Foo.member1. 

Gary Herron

From gfixler at gmail.com  Wed Dec 19 18:41:13 2007
From: gfixler at gmail.com (Gary)
Date: Wed, 19 Dec 2007 15:41:13 -0800 (PST)
Subject: Allowing Arbitrary Indentation in Python
References: <5169ce7e-a092-47fc-b121-cd86e4916aa5@p69g2000hsa.googlegroups.com>
	<92ab48e1-c5f9-496a-a8ae-a0bf9ef957b1@d4g2000prg.googlegroups.com> 
	<13mj9o53n2kpc34@corp.supernews.com>
Message-ID: <5073c28e-77c7-4f8c-a2ff-b568c951c54a@t1g2000pra.googlegroups.com>

On Dec 19, 3:19 pm, Grant Edwards  wrote:

> The problem is that to everybody else in the world, indentation
> in Python represents control flow nesting, not GUI widget
> nesting.

Thanks, Grant. That's the first solid reasoning I've seen, and it's a
very solid argument, as well. To that end, I'm thinking a few things.
For one, your argument correctly puts forth that using the code in 2
separate ways is not good. Despite doing just that for 6 years with no
problems, I can agree with you on that point. For another, I don't
really think the proposals, or hints at how to do it in Python are all
that great, either, because they create what I believe to be a bigger
mess.

I'm kind of leaning toward a Glade approach, wherein I wrap the UI
elements up with an XML parser (I'm sure those exist for me already),
and have some set of UI building functions build the UI for me with
the crappy Maya calls underneath, based on data extracted from the
XML. Then the UIs would be built as part of the parsing effort. This
sort of hides the ugly stepchild of the Maya method of creating UIs
under calls that each only do one thing, which rids the need to nest
anything directly in Python, and separates out the UI data into XML -
a language specifically made to be indented in a readable fashion,
perfect for UI information. The extra benefit is that UI snippets can
then be reused in the manner of templates, and even 'widgets,' from
which all of my UIs can potentially benefit. I'm sure there's more to
think about in regards to all of this, but it's not only the basis for
a game plan, but it has precedent in places like Glade, to suggest
that it's a viable, and decent option.

Again, thanks.
-g

From bdesth.quelquechose at free.quelquepart.fr  Sat Dec  8 12:21:38 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Sat, 08 Dec 2007 18:21:38 +0100
Subject: setattr getattr confusion
In-Reply-To: 
References: 	<34fd1d8a-fa21-4c13-be10-822520093c4c@j44g2000hsj.googlegroups.com>

Message-ID: <475ad2b2$0$29825$426a34cc@news.free.fr>

Donn Ingle a ?crit :
>>class Key(object):
>>def __init__self):
>>self.__dict__['props'] = KeyProps()
> 
> Okay - that's weird.

No, that's coherent. The default behavior (I mean, when there's no 
descriptor involved etc) of __setattr__ is to store attributes in 
instance.__dict__. So as long a you override __setattr__, you have to 
take care of this by yourself.

> Is there another way to spin this?
> 
>>def __setattr__(self,var,val):
>>setattr(self.props,var,val)
> 
> Perhaps by changing this one?

If you know by advance which names should live in your object and/or 
which should belong to the KeyProps instance, then you can check and 
dispatch, ie:

class Key(object):
   # names that must not be delegated to instance.props
   _mynames = ['props', 'foo', 'bar']

   def __setattr__(self, name, value):
     if name in self._mynames:
       object.__setattr__(self, name, value)
     else:
       setattr(self.props, name, value)

From mdelliot at gmail.com  Thu Dec 27 16:29:09 2007
From: mdelliot at gmail.com (Micah Elliott)
Date: Thu, 27 Dec 2007 13:29:09 -0800 (PST)
Subject: Building Python statically on linux
References: <0300530c-5550-4fff-bac6-66dbfa1b82b9@d21g2000prf.googlegroups.com>

Message-ID: <9c2ead09-d84d-4972-b3a2-8bff510fcb94@b40g2000prf.googlegroups.com>

On Dec 27, 8:32 am, Zentrader  wrote:

> I think you can just add -static to the gcc Flag line in the
> makefile.

Doing that (or CFLAGS=-static, or LDFLAGS=-static, or other Makefile
tweaks) gets me linker errors.  Sounds like there's not a simple
prescribed means to do this (that anyone has documented).  So now I'm
open to hearing about other hacks people have done to get this to
work.  (Hopefully a config weenie heard my plea for --enable-all-
static)

--
Micah

From pavlovevidence at gmail.com  Thu Dec 27 14:59:01 2007
From: pavlovevidence at gmail.com (Carl Banks)
Date: Thu, 27 Dec 2007 11:59:01 -0800 (PST)
Subject: list in a tuple
References: 

	<13n3ad4fef122ef@corp.supernews.com>

	<141330e6-0f52-4145-b020-7f8e42efa2f4@w56g2000hsf.googlegroups.com>
Message-ID: <845c1197-2ba1-4af5-9e8a-bf5fa0a6fc74@i72g2000hsd.googlegroups.com>

On Dec 27, 12:38 pm, montyphy... at gmail.com wrote:
> After some tought I must agree that this is a wart more than
> a bug and that it will probably be best not to mess with it.
> However, what do you guys think about the print wart in Py3k
> described athttp://filoxus.blogspot.com/2007/12/python-3000-how-mutable-is-immuta...
> (im not trying to advertise my blog, I just don't feel like
> typing the whole problem all over again)?

1. Tuples are immutable.  None of the tuples in your example were
modified.

The behavior you want (which is not immutability of tuples, which
Python already has, but *recursive* immutability of all objects
contained within the tuple) is not an unreasonable thing to ask for,
but the design of Python and common usage of tuples makes it all but
impossible at this point.

There is no general way to determine whether an object is mutable or
not.  (Python would have to add this capability, an extremely
substantial change, to grant your wish.  It won't happen.)

Tuples are used internally to represent the arguments of a function,
which are often mutable.

Tuples are sometimes used to return multiple values from a function,
which could include mutable values.

Tuples are used to specify multiple arguments to a format string, some
of which could be mutable, though I guess this is going away in Python
3.

2. The issue with print in your example is a bug, not a wart.  It'll
be fixed.

(This is just a guess, but I think it might have something to do with
the flux of the new bytes type.  The behavior manifested itself when
trying to print a self-referencing structure probably only because
that section of code was lagging behind.)

3. You're still top posting, which goes against this group's
conventions and annoys quite a few people.  When you reply to a
message, please move your cursor to below the quoted message before
you begin typing.  Thank you

Carl Banks

From steve at REMOVE-THIS-cybersource.com.au  Sat Dec  8 19:33:53 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Sun, 09 Dec 2007 00:33:53 -0000
Subject: new style class
References: <1194002609.296417.111050@v3g2000hsg.googlegroups.com>
	<472b09dd$1_7@news.bluewin.ch>
	<1194003093.338406.300870@y42g2000hsy.googlegroups.com>

Message-ID: <13lmdvh6lk732b9@corp.supernews.com>

On Sat, 08 Dec 2007 23:14:44 +0000, Bruce Coram wrote:

>> http://www.catb.org/~esr/faqs/smart-questions.html
>>   
> Eric Raymond's advice on how to ask questions the smart way would seem
> to provide an excuse for people with ego control problems to indulge
> themselves at the expense of others.  While it is undoubtedly true that
> there are people who post who should spend more time reading and
> researching the problem, that is no excuse for replies that  are rude,
> hostile or exhibit similar displays of ill-tempered arrogance.

Pointing somebody at Eric Raymond's advice is neither rude, hostile or 
arrogant. It may be brusque. It may fail to sugar-coat the message 
sufficiently, and hurt some recipient's feelings, but that's their 
problem, not that of the sender.

> Eric
> Raymond should perhaps re-read his advice and re-draft it to avoid
> providing cover for those 'experts' who are either rude or ignorant - or
> both.

Why don't you do so yourself? He solicits suggestions and revisions.

Or ask for permission to fork the document and come up with your own. 
(You have to ask first, because as far as I can see the document is not 
released with an open licence.)

> If an 'expert' has time to indulge his/her ego is such an
> intemperate manner then he/she probably doesn't have enough to do, or
> enjoys being rude.  

Dare I suggest that perhaps YOU should read smart-questions? In 
particular, the bits where Raymond writes about RTFM:

"You shouldn't be offended by this; by hacker standards, your respondent 
is showing you a rough kind of respect simply by not ignoring you. You 
should instead be thankful for this grandmotherly kindness."

Pointing somebody at smart-questions is a rather more polite form of RTFM.

> The best response to those who can not be bothered
> to do the necessary work is either no reply 

Ignoring people's request for help to punish them for poor behaviour is 
not only rude but it is counter-productive. Not only do you not solve 
their immediate problem, but you keep them in a state of ignorance as to 
why they are being shunned -- thus guaranteeing that they will invariably 
transgress again.

> or a simple "You would be
> well advised to do some research before asking your question."

Again leaving them no better off and still likely to transgress in the 
future. How much is "some"? What sort of research? Asking on Usenet is 
research isn't it? Why should I be expected to struggle with this on my 
own when there are people out there who already know the answer?

These are all reasonable thoughts that a poster might have. Then there 
are the unreasonable thoughts, like the poster who once told me off for 
asking for a traceback so we could see what his error was. He actually 
took the time to write to me to abuse me for wasting *his* time, when I 
could "just as easily" copy the code from his post, fix the broken 
indentation and typos, save it to a file and run it myself.

How do you expect people to learn better if we follow your advice?

> We do not need to make life any more difficult than it already is.

Following your advise will make life worse.

> Civility costs nothing.

Teaching people to ask appropriate questions is being civil.

> Eric Raymond's article, which offer's good advice, is
> rather misguided in not only providing an excuse for poor behaviour but
> almost actively encouraging it.  This is a pity since the essence of the
> document is very good advice.

Shame you haven't understood it, because your suggestions are 
diametrically opposed to his message. Raymond's message is about teaching 
people how to learn for themselves. Your message is to ignore their 
request for help and let them keep floundering in the dark.

-- 
Steven.

From zorg724 at yahoo.fr  Mon Dec  3 17:53:20 2007
From: zorg724 at yahoo.fr (sccs cscs)
Date: Mon, 3 Dec 2007 23:53:20 +0100 (CET)
Subject: Delete a instance passed by reference into a method
Message-ID: <855405.74475.qm@web90502.mail.mud.yahoo.com>

Hello,
I am very surprising by the Python interpreter behavior : see code
I initialize a 'A' and a 'B', and i give a B instance reference to the  instance A in 'm1' method. I can modify (IN/OUT mode)  the 'i' attribute  (  aB.i = 10 ) , BUT I CANNOT DELETE "aB" into the fonction m1 ! the code "     del aB " or " aB= None" has no effect. 'aB' still exists when m1() is finsihed! WHY ? How can i do that?
Thank you.
Zorgi

class A(object):
       def __init__(self):
        pass
    def m1 (self, aB ):
        aB.i = 10
        del aB
        print "no more B"

class B(object):
    def __init__(self,i):
        self.i = i
    def __del__(self):
        print "delete B"

aA = A ()
aB = B ( i = 6)

unA.m1 (aB )
print str( aB .i )  #--->  Display 10, aB is not destroy !

---------------------------------
 Ne gardez plus qu'une seule adresse mail ! Copiez vos mails vers Yahoo! Mail 
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From james.b.looney at lmco.com  Tue Dec 11 16:58:15 2007
From: james.b.looney at lmco.com (Looney, James B)
Date: Tue, 11 Dec 2007 14:58:15 -0700
Subject: Building Python2.4.1 with idle on HPUX11
Message-ID: 

I've been trying to build Python 2.4.1 on an HPUX11.  Python builds ok,
but idle has issues.  And what I don't know is how to determine whether
or not Python discovers the tcl/tk libraries (.sl) and headers, or if
there's some other problem.  If someone has thoughts on either how to
invoke 'configure' or how to debug this issue, please let me know.

I'm executing them from an HPUX directory (different for each one) to
isolate the different platform's objects/libraries since I also build
and run from IRIX646 and SunOS5 (both of which work find).

Here's my configure lines:
Tcl8.4.9:
/bin/env SHLIB_LD_FLAGS=-fPIC
/usr/local/openSource/off.the.net/www.tcl.tk/tcl8.4.9/unix/configure 
   --prefix=/usr/local/openSource/architectureIndependent 
   --exec-prefix=/usr/local/openSource/HPUX11; make; make install

Tk8.4.9:
/bin/env SHLIB_LD_FLAGS=-fPIC
/usr/local/openSource/off.the.net/www.tcl.tk/tk8.4.9/unix/configure 

--with-tcl=/usr/local/openSource/off.the.net/www.tcl.tk/tcl8.4.9/unix/pl
atforms/HPUX11 
   --prefix=/usr/local/openSource/architectureIndependent 
   --exec-prefix=/usr/local/openSource/HPUX11; make; make install

Python 2.4.1:
./configure 
   --prefix=/lds/tools/openSource/mainline/architectureIndependant 
   --exec-prefix=/lds/tools/openSource/mainline/HPUX11 
   --enable-shared; make; make install

Thanks,
-James
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From sergio.correia at gmail.com  Mon Dec 10 14:05:39 2007
From: sergio.correia at gmail.com (Sergio Correia)
Date: Mon, 10 Dec 2007 14:05:39 -0500
Subject: Job Offer: Python Ninja or Pirate!
In-Reply-To: 
References: 

Message-ID: 

> import sys, xml, urllib
>
> dummy = [sys.stdout.write(city + ': ' + str(num) + '\n') for city, num in
> set([[(a, o.count(a)) for a in p] for o, p in [2*tuple([[city for city in
> ((xml.dom.minidom.parseString(urllib.urlopen('
> http://api.etsy.com/feeds/xml_user_details.php?id='
> + str(id)).read()).getElementsByTagName('city')[0].childNodes + [(lambda
> t: (setattr(t, 'data', 'no city'),
> t))(xml.dom.minidom.Text())[1]])[0].data.lower().replace('  ', ' ') for id
> in [71234, 71234, 71234, 71234, 71234, 71234, 42792])]])]][0])]
>

Is that python or perl?
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From limodou at gmail.com  Wed Dec 12 05:06:46 2007
From: limodou at gmail.com (limodou)
Date: Wed, 12 Dec 2007 18:06:46 +0800
Subject: ANN: UliPad 3.8.1 released!
In-Reply-To: <475FB0AF.9030905@islandtraining.com>
References: 
	<475FB0AF.9030905@islandtraining.com>
Message-ID: <505f13c0712120206u4427511ej8b6aab069e8173f2@mail.gmail.com>

Please visit the site:

http://code.google.com/p/ulipad

I'm sorry forgot that.

-- 
I like python!
UliPad <>: http://code.google.com/p/ulipad/
meide <>: http://code.google.com/p/meide/
My Blog: http://www.donews.net/limodou

From bdesth.quelquechose at free.quelquepart.fr  Fri Dec 21 18:13:07 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Sat, 22 Dec 2007 00:13:07 +0100
Subject: detecting property modification
In-Reply-To: <4876f94c-386b-44a2-8b1d-e9c5cf6f6d79@r60g2000hsc.googlegroups.com>
References: 

	<476c343d$0$5462$426a34cc@news.free.fr>
	<4876f94c-386b-44a2-8b1d-e9c5cf6f6d79@r60g2000hsc.googlegroups.com>
Message-ID: <476c4887$0$15769$426a74cc@news.free.fr>

Mangabasi a ?crit :
> On Dec 21, 4:46 pm, Bruno Desthuilliers
>  wrote:
> 
>>Mangabasi a ?crit :
>>(snip)
>>
>>
>>
>>
>>>When you say "The Body gets asked for the value of the attribute" that
>>>means that Body's __dict__ is being asked to provide a value
>>>corresponding to its 'pos' key, right?
>>
>>Wrong. That means that attribute lookup rules are invoked, which may *or
>>not* end up calling the Body *intance*'s __dict__ __setitem__ method to
>>be called. Anyway:
>>
>>
>>> Now I may want to ask a more
>>>specific question here.  How do I modify Body's __dict__ so that I can
>>>perform a task when __getitem__ method of the __dict__ is called?
>>
>>This still won't solve your problem. What you want to trace are method
>>calls on the objects returned by attribute lookup on instances of Body -
>>not calls to instances __dict__ methods. In your example, what you want
>>to trace are calls to pos.__getitem__, not calls to b.__dict__.__getitem__.
>>
>>And if you what you really want is to trace any mutator call to any
>>arbitrary object that may become an attribute of b, then I'm afraid
>>you're in for a hard time...
> 
> 
> Now I am curious about these "attribute lookup rules".
> My understanding was:
> 
> When an attribute name is accessed in an instance
> 
> First __getattribute__(self, name) is called.

Which is itself resolved first (methods being attributes) !-)

__getattribute__ can itself be overloaded, so the only thing you can bet 
is that the first __getattribute__ method found in the mro will be 
called. All the rest is the *default* lookup rule:

>  This guy looks into the
> instance's dictionary for the name,

Yes.

> if not found then looks into the
> parent class's dictionary,

You mean : the class's dictionnary.

> if not found searches the base classes, if
> not found checks __getattr__,

and invoke it if found

> still not found raises an
> AttributeError.

> Does this look right?

Given the above corrections, mostly, yes. Note that the first one 
already makes a big difference. Also, it doesn't take into accounts 
__slots__ and descriptors. Let's ignore slots for the moment - we still 
have descriptors (property, functions, and other computed attributes), 
which have their __get__ method invoked when looked up.

>  If not, are these attribute lookup rules
> documented somewhere?  I have not been paying much attention to the
> new style classes, have things changed with the introduction of these
> new style classes?

Well, yes, somewhat. Else we wouldn't have them, isn't it ?

Anyway, wrt/ your problem, wether you use old-style or new-style classes 
won't make much difference: hooking into Body's instances attribute 
lookup won't let you trace attribute lookup on objects that are 
themselves attributes of a Body instance (hmmm, not very clear, 
sorry...re-reading it slowly, it should make sens. Hopefully...).

From michele.simionato at gmail.com  Sun Dec 30 00:17:01 2007
From: michele.simionato at gmail.com (Michele Simionato)
Date: Sat, 29 Dec 2007 21:17:01 -0800 (PST)
Subject: Fate of itertools.dropwhile() and itertools.takewhile()
References: <7a86a421-089f-4634-8902-e9edfe139f03@e23g2000prf.googlegroups.com>
Message-ID: <1a35dcbb-593c-45b8-a450-5245e75b1c9d@21g2000hsj.googlegroups.com>

On Dec 30, 12:10 am, Raymond Hettinger  wrote:
> I'm considering deprecating these two functions and would like some
> feedback from the community or from people who have a background in
> functional programming.

I am with Steven D'Aprano when he says that takewhile and dropwhile
are clear enough. On the other hand, in my code
base I have exactly zero occurrences of takewhile and
dropwhile, even if I tend to use the itertools quite
often. That should be telling. If my situations is
common, that means that takewhile and dropwhile are
useless in practice and should be deprecated.
But I will wait for other respondents. It may just be
that I never needed them. I presume you did scans of
large code bases and you did not find occurrences of
takewhile and dropwhile, right?

  Michele Simionato

From carl at personnelware.com  Thu Dec 27 01:16:22 2007
From: carl at personnelware.com (Carl K)
Date: Thu, 27 Dec 2007 00:16:22 -0600
Subject: Counter-spam: Change the subject
In-Reply-To: 
References: 	<1b648cf1-ee24-4132-9c15-b293d12907cf@i29g2000prf.googlegroups.com>	<13ltsmo5rcl50ba@corp.supernews.com>	<640971a3-61bf-44cc-8b95-754425008b29@j20g2000hsi.googlegroups.com>

Message-ID: <4dGdnbOFyaWu3u7anZ2dnUVZ_o3inZ2d@comcast.com>

Jan Claeys wrote:
> Op Tue, 11 Dec 2007 14:19:20 -0800, schreef Paul McGuire:
> 
>> My ISP's news server only works for me when I am connected locally, not
>> when I am travelling.

Same here, so I use:

sudo ssh -L119:newsgroups.comcast.net:119 carl at my.box.at.home.com
carl at asus17:~$ cat /etc/hosts
127.0.0.1       localhost
127.0.0.1       asus17.personnelware.com        asus17
127.0.0.1       newsgroups.comcast.net

Carl K

From dotancohen at gmail.com  Sun Dec  2 03:01:46 2007
From: dotancohen at gmail.com (Dotan Cohen)
Date: Sun, 2 Dec 2007 10:01:46 +0200
Subject: "Python" is not a good name, should rename to "Athon"
In-Reply-To: 
References: 
	<78bdd499-a263-4c68-8e43-e3e59b111c7e@a39g2000pre.googlegroups.com>
	<5rcq90F13re18U1@mid.individual.net>

Message-ID: <880dece00712020001w6d4848abyb01dc034edadd888@mail.gmail.com>

On 01/12/2007, Russ P.  wrote:
> > So what dou you think about D language? :) Or F or F#?
>
> I think that one-letter names are even worse for languages than they
> are for variables.

And they are impossible to google.

Update: well, they were when _I_ needed to... I just tried, and both
"C" and "C++" gave relevant results. A few years ago, "C" would not
return anything programming-related, and "C++" returned exactly the
same results as "C". Google has improved (I say that weekly).

Dotan Cohen

http://what-is-what.com
http://gibberish.co.il
?-?-?-?-?-?-?-?-?-?-?-?-?-?-?-?-?-?-?-?-?-?-?-?-?-?-?

A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?

From newsgroups at debain.org  Sun Dec  9 15:43:01 2007
From: newsgroups at debain.org (Samuel)
Date: Sun, 9 Dec 2007 20:43:01 +0000 (UTC)
Subject: a strange SyntaxError
References: 
	<5f9860da-0763-47bd-a5d9-c5649f98254d@b1g2000pra.googlegroups.com>
Message-ID: 

On Sun, 09 Dec 2007 12:35:46 -0800, CoolGenie wrote:

> OK, sorry, this was about indents. Stupid VIM!

$ mkdir -p $HOME/.vim/ftplugin/

$ echo "setlocal sw=4
setlocal ts=4
noremap  py o/**************/
" >> ~/.vim/ftplugin/python.vim

$ echo "syntax on
set sw=2
set ts=2
set nu
set nuw=3
set autoindent
set expandtab" >> $HOME/.vimrc
--------------- 

Problem solved, never to be found again.

Bye,
-Sam

From sajmikins at gmail.com  Fri Dec 21 16:11:40 2007
From: sajmikins at gmail.com (Simon Forman)
Date: Fri, 21 Dec 2007 13:11:40 -0800 (PST)
Subject: Odd behavior in Python/Tkinter?
References: <3e6fc1b0-ac5e-42ed-8fe1-76da015c46ac@i29g2000prf.googlegroups.com>
Message-ID: <5c69cf62-d770-439a-a7ee-ea92626a03ad@18g2000hsf.googlegroups.com>

On Dec 21, 12:30 pm, Lie  wrote:
> Inspect the following code:
>
> --- start of code ---
> import Tkinter as Tk
> from Tkconstants import *
>
> root = Tk.Tk()
>
> e1 = Tk.Entry(root, text = 'Hello World')
> e2 = Tk.Entry(root, text = 'Hello World')
>
> e1.grid(row = 1, column = 1)
> e2.grid(row = 2, column = 1)
>
> e1.insert(END, 'Hello Python')
>
> root.mainloop()
>
> --- end of code ---
>
> What do you expect the result should be?
> a. Two textboxes: One contains 'Hello Python', the other 'Hello World'
> b. Two textboxes: Both containing 'Hello World'
> c. Two textboxes: Both containing 'Hello Python'
> d. Two textboxes: Both empty
> e. Don't know
>
> Check your guess with your Python 2.5.1 (AFAIK, the latest version at
> the moment of writing)

Huh.  I got C (using python 2.4.3 on Ubuntu Linux..)

That ain't right.

From bj_666 at gmx.net  Fri Dec 14 11:59:08 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 14 Dec 2007 16:59:08 GMT
Subject: Compressing a text file using count of continous characters
References: 
Message-ID: <5sfr2sF196svmU1@mid.uni-berlin.de>

On Fri, 14 Dec 2007 08:54:58 -0800, nirvana wrote:

> I need to count the number of continous character occurances(more than
> 1) in a file, and replace it with a compressed version, like below
> XYZAAAAAAAADEFAAcdAA --> XYZ8ADEF2Acd2A

Great.  Then go ahead an implement it.  :-)

`itertools.groupby()` might be handy.

And you have to think about digits in the source if that's allowed.

Ciao,
	Marc 'BlackJack' Rintsch

From florencio.cano at gmail.com  Mon Dec 24 07:42:54 2007
From: florencio.cano at gmail.com (Florencio Cano)
Date: Mon, 24 Dec 2007 13:42:54 +0100
Subject: Damn error!
In-Reply-To: 
References: 
Message-ID: 

One linha in tabela doesn't have the syntax "something:something" so
split() returns a 0 or 1 sized list and tmp[0] or tmp[1] points
outside the list.

2007/12/24, Vaurdan :
> Hello,
> I've this code:
> def print_tabela(tabela):
>         print "Tabela 1 | Tabela 2"
>         for linha in tabela:
>                         tmp = linha.split(":")
>                         print tmp[0] + " | " + tmp[1],
>
> But give me this error:
> Tabela 1 | Tabela 2
> Traceback (most recent call last):
>   File "./teste.py", line 126, in 
>     print_tabela(conteudo)
>   File "./teste.py", line 58, in print_tabela
>     print tmp[0] + " | " + tmp[1],
> IndexError: list index out of range

-- 
Florencio Cano Gabarda

From hniksic at xemacs.org  Tue Dec 11 02:44:38 2007
From: hniksic at xemacs.org (Hrvoje Niksic)
Date: Tue, 11 Dec 2007 08:44:38 +0100
Subject: Is a "real" C-Python possible?
References: 

	<7tOdnRb-5fMW_MHanZ2dnUVZ_tmhnZ2d@comcast.com>

	<9c4dd9b6-acc1-478d-bba2-a1ba223c660f@f3g2000hsg.googlegroups.com>
	<475dc3ba$0$17415$426a74cc@news.free.fr>
	<112b5a80-42d4-4298-82a3-e9e25aa23b75@y5g2000hsf.googlegroups.com>
Message-ID: <87d4tdu13t.fsf@mulj.homelinux.net>

sturlamolden  writes:

> On 10 Des, 23:54, Bruno Desthuilliers
>  wrote:
>
>> Or a lack of time and money. Lisp is one of the older programming
>> languages around, and at a time had BigBucks(tm) invested on it to try
>> and make it practically usable.
>
> Yes. But strangely enough, the two Lisp implementations that really
> kick ass are both free and not particularly old.

Not two, but one -- SBL is simply a fork of CMU CL.  As for their age,
the CMU CL states that it has been "continually developed since the
early 1980s".

From MrJean1 at gmail.com  Wed Dec 26 15:28:24 2007
From: MrJean1 at gmail.com (MrJean1)
Date: Wed, 26 Dec 2007 12:28:24 -0800 (PST)
Subject: CPython and a C extension using Boehm GC
References: 

	<3aa7bd0a-acd2-4d1e-b647-d300fc2ae20d@s8g2000prg.googlegroups.com>
Message-ID: <88409ef1-c417-4c52-8671-4b7dc6e9989c@e10g2000prf.googlegroups.com>

FWIIW, I built GC 6.7 on a RHEL 3 (Opteron) system using

  ./configure --prefix=... --enable-redirect-malloc --enable-
threads=posix --enable-thread-local-alloc
  make; make check; make install

Then, I tried running a few examples with 3 different, existing Python
binaries each pre-loaded with the libgc.so library

  env  LD_PRELOAD=.../libgc.so   ....

One is Python 2.2.3 included in RHEL 3, one is a Python 2.5.1 build
and is a Python 3.0a2 build, all 64-bit.  All seemed to work OK.

These are 3 existing Python binaries without any call to GC_INIT().
AFAICT, on Linux, GC_INIT is a no-op anyway.

/Jean Brouwers

On Dec 26, 7:14?am, MrJean1  wrote:
> It depends on how the GC inside the extension is built. ?If it is a
> drop-in replacement for malloc, then GC *must* be loaded and
> initialized upfront if possible. ?There is no need to memcpy anything
> between Python and the extension.
>
> However, if GC does not replace malloc, etc., then GC-ed memory is
> only used within the extension. ?GC_INIT can be called when the
> extension is loaded and memcpy-ing between Python and the extension is
> mandatory.
>
> There are other details to consider. ?For example, on some platforms,
> GC *must* be initialized from the main executable. ?That may preclude
> both scenarios, altogether.
>
> /Jean Brouwers
>
> On Dec 25, 7:35?pm, Andrew MacIntyre 
> wrote:
>
> > malkarouri wrote:
> > > Is it possible to write a Python extension that uses the Boehm garbage
> > > collector?
> > > I have a C library written that makes use ofboehm-gcfor memory
> > > management. To use that, I have to call GC_INIT() at the start of the
> > > program that uses the library. Now I want to encapsulate the library
> > > as a CPython extension. The question is really is that possible? And
> > > will there be conflicts between theboehm-gcand Python memory
> > > management? And when should I call GC_INIT?
>
> > It probably should be possible with some caveats:
> > - memory allocated by Python is never passed into the library such that
> > ? ?it also ends up being subject toboehm-gc;
> > - memory allocated by the library is never used by Python objects.
>
> > So memcpy()ing between library allocated and Python allocated memory
> > would seem to be a way to achieve this.
>
> > I would call GC_INIT in the extension's import routine
> > (init()) for a C extension, and immediately after loading
> > the library if using ctypes.
>
> > --
> > -------------------------------------------------------------------------
> > Andrew I MacIntyre ? ? ? ? ? ? ? ? ? ? "These thoughts are mine alone..."
> > E-mail: andy... at bullseye.apana.org.au ?(pref) | Snail: PO Box 370
> > ? ? ? ? andy... at pcug.org.au ? ? ? ? ? ? (alt) | ? ? ? ?Belconnen ACT 2616
> > Web: ? ?http://www.andymac.org/?? ? ? ? ? ? | ? ? ? ?Australia

From asgarde at msn.com  Tue Dec 25 11:42:58 2007
From: asgarde at msn.com (asgarde at msn.com)
Date: Tue, 25 Dec 2007 08:42:58 -0800 (PST)
Subject: Pexpect and a Linux Terminal
References: 

Message-ID: <698f7cc7-ffae-4a59-a9ac-a02f0d8d1247@w56g2000hsf.googlegroups.com>

On 25 d?c, 10:14, "asga... at msn.com"  wrote:
> On 25 d?c, 09:41, "asga... at msn.com"  wrote:
>
> > Yes it's work ! :-D
>
> > I use  prompt = '.*#' to detect the prompt expect. Thank you for you'r
> > help !
>
> > Vive Python et TK :-D
>
> I have another probleme, not directly from Pexpect() function. There
> is my code :
>
> from Tkinter import *
> from sys import *
> import tkMessageBox
> from tkColorChooser import askcolor
> from tkFileDialog   import askopenfilename
> import tkFileDialog as Selector
> from os.path import exists, join
> from os import pathsep
> import pexpect
> import os, sys
> def test():
>  cmd1="su -"
>  pwd="mypass"
>  prompt ='.*#'
>  iso=Selector.askopenfilename(initialdir="/home/user",filetypes =
> [("iso", "*.iso")])
>  lbl2=Label(fen1)
>  cmd2="mount -o loop "+iso+" /mnt/disk"
>  child = pexpect.spawn(cmd1)
>  child.expect('Mot de passe :')
>  child.sendline(pwd)
>  child.expect(prompt)
>  child.send(cmd2)
>  lbl2.configure(text=cmd2)
>  lbl2.pack()
> fen1=Tk()
> entr1=Entry(fen1)
> lbl1=Label(fen1)
> entr1.pack()
> lbl1.pack()
> bou1= Button(fen1,text='Parcourir',command=test)
> bou1.pack()
> fen1.mainloop()
>
> All that's ok when if cmd2 command like : mkdir /root/toto but when i
> want to replace it for : mount loop -o /home/user/myiso.iso /mnt/disk
> nothing happened :-( I tryed the command during many times and i don't
> know why it doesn't work :s
>
> if you can help me another time i will be apprecied :-P
>
> Thank you :)

When want to test the mkdir command, it work but ONLY if my TTY as
root is closed, very weired no ?
the mount command still not work :s

From lists at cheimes.de  Fri Dec  7 06:07:07 2007
From: lists at cheimes.de (Christian Heimes)
Date: Fri, 07 Dec 2007 12:07:07 +0100
Subject: Can I embed Windows Python in C# or VC++?
In-Reply-To: <8e07e800-eab0-46c3-b3ed-d518f1d54e11@e25g2000prg.googlegroups.com>
References: <7520d659-deae-403c-a788-14a70977a09d@e6g2000prf.googlegroups.com>		<54927654-314c-46a4-be30-13d1fc4d343d@s12g2000prg.googlegroups.com>	
	<8e07e800-eab0-46c3-b3ed-d518f1d54e11@e25g2000prg.googlegroups.com>
Message-ID: <4759295B.8030209@cheimes.de>

sturlamolden wrote:
> The answer is YES. C# can access C functions exported by any DLL with
> platform invoke. Since the Python C API is plain C and not C++ you can
> gain access to it from C#. Import System.Runtime.InteropServices and
> write wrappers like
> 
> [DllImport("Python25.dll"), CallingConvention=CallingConvention.Cdecl]
> public static void Py_Initialize();

There is no need for that. PythonDotNET wraps the P/Invokes and internal
C API of CPython in a nice .NET API.

Christian

From gagsl-py2 at yahoo.com.ar  Thu Dec 20 01:10:48 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Thu, 20 Dec 2007 03:10:48 -0300
Subject: Allowing Arbitrary Indentation in Python
References: <5169ce7e-a092-47fc-b121-cd86e4916aa5@p69g2000hsa.googlegroups.com>
	<92ab48e1-c5f9-496a-a8ae-a0bf9ef957b1@d4g2000prg.googlegroups.com>

	<31267f9b-753c-4c7a-9b05-6a6ea458db44@e23g2000prf.googlegroups.com>
Message-ID: 

En Thu, 20 Dec 2007 00:46:50 -0300, Gary  escribi?:

> 1) Is it best/more standard to read in, and parse the XML into some
> kind of Python hierarchy first, and then build the UI out of the data
> in that structure, or call out UI commands as say, callbacks from the
> parser live - as it wades through the data? I lean toward the former,
> as it means having one standard set of functions to read in, and parse
> the XML data, which can then be used for anything, like displaying the
> UI to the client, or creating an editable version of the UI in the UI
> build tool. The modified version can then be saved back out as well.

ElementTree is a good candidate for processing xml:  
http://effbot.org/zone/element.htm
It provides a "natural" way to access elements and attributes, instead of  
writing the same handler again and again or using slow DOM functions of  
gigantic names.

> 2) Is XML fairly standard for this in Python? I recently learned about/
> was frightened by pickling. Is that worth learning? Does anyone bother
> with it?

Pickle is good for storing data that will be loaded again by (the same, or  
another) Python program. The format isn't portable to other languages, it  
isn't readable, may have security issues. But it's extensible and much  
more flexible than the other builtin alternative, marshal. You can use  
pickle as a serializer if you're aware of its limitations.

-- 
Gabriel Genellina

From steve at REMOVE-THIS-cybersource.com.au  Thu Dec 27 07:24:29 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Thu, 27 Dec 2007 12:24:29 -0000
Subject: getting n items at a time from a generator
References: 
Message-ID: <13n76btksnmf1ed@corp.supernews.com>

On Thu, 27 Dec 2007 03:34:57 -0800, Kugutsumen wrote:

> I am relatively new the python language and I am afraid to be missing
> some clever construct or built-in way equivalent to my 'chunk' generator
> below.
> 
> def chunk(size, items):
>     """generate N items from a generator.""" 

[snip code]

Try this instead:

import itertools

def chunk(iterator, size): 
    # I prefer the argument order to be the reverse of yours.
    while True:
        chunk = list(itertools.islice(iterator, size))
        if chunk: yield chunk
        else: break

And in use:

>>> it = chunk(iter(xrange(30)), 7)
>>> for L in it:
...     print L
...
[0, 1, 2, 3, 4, 5, 6]
[7, 8, 9, 10, 11, 12, 13]
[14, 15, 16, 17, 18, 19, 20]
[21, 22, 23, 24, 25, 26, 27]
[28, 29]

-- 
Steven

From gagsl-py2 at yahoo.com.ar  Mon Dec 31 02:35:44 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Mon, 31 Dec 2007 05:35:44 -0200
Subject: Bizarre behavior with mutable default arguments
References: 
	<47768DE0.5050406@v.loewis.de>

	<2541af1e-9167-4cee-b773-8f6ab0f23b8f@i12g2000prf.googlegroups.com>
	<4a5d4311-c5ec-4f3c-8800-c30ac30e399d@t1g2000pra.googlegroups.com>
	<601e4a81-a69a-4576-a276-41d82a256482@e50g2000hsh.googlegroups.com>

	<13nganfbu52dnff@corp.supernews.com>

	<13nh4uvkq9cmo81@corp.supernews.com>
Message-ID: 

En Mon, 31 Dec 2007 05:01:51 -0200, Steven D'Aprano  
 escribi?:
> On Sun, 30 Dec 2007 20:00:14 -0800, bukzor wrote:
>
>> I also see this as the main use of the
>> 'notlocal' keyword to be introduced in py3k (it also fixes the example
>> given by Istvan above).
>
> There doesn't appear to be any reference to a "notlocal" keyword in
> Python 3 that I can find. Have I missed something? It sounds like an
> April Fool's gag to me. Do you have a reference to a PEP or other
> official announcement?

No, it's a real keyword in python 3, but it's spelled "nonlocal".
See http://www.python.org/dev/peps/pep-3104/

-- 
Gabriel Genellina

From sdementen at gmail.com  Sat Dec 29 07:51:12 2007
From: sdementen at gmail.com (seb)
Date: Sat, 29 Dec 2007 04:51:12 -0800 (PST)
Subject: Brussels Python Interest/Users Group
Message-ID: 

Hi Pythonistas,

Is anyone interested in forming a Brussels(Belgium) area Python User
Group ? I am not aware of any python focused group in this area.

Language could be whatever fits the bill (English/French/Dutch/...)
Focus would be python, ironpython/silverlight, scipy, ORMs, web
frameworks, and whatever is of interest to us.

Interested ? Please post on this thread.

Seb

From sturlamolden at yahoo.no  Mon Dec 10 19:59:19 2007
From: sturlamolden at yahoo.no (sturlamolden)
Date: Mon, 10 Dec 2007 16:59:19 -0800 (PST)
Subject: Any way to program custom syntax to python prompt? >> I want to 
	edit matrices.
References: <639ad9a8-83ac-41b3-abf2-0759e70eb839@r60g2000hsc.googlegroups.com>
Message-ID: <0da0f06e-ccf7-4cd5-8cbc-a06901e0de4e@n20g2000hsh.googlegroups.com>

On 11 Des, 01:54, mosi  wrote:

> Python matrices are usually defined with numpy scipy array or similar.
> e.g.>>> matrix1 = [[1, 2], [3, 4], [5, 6]]

That is a list of Python lists, not a NumPy array or matrix.

> For example:>>> matrix + 2
>
> [ 3, 4;
>   5, 6;
>   7, 8;]
>
> Possibly with operator overloading?

Go and get NumPy: www.scipy.org

Then buy Travis Oliphant's book.

From jzgoda at o2.usun.pl  Fri Dec 14 15:53:41 2007
From: jzgoda at o2.usun.pl (Jarek Zgoda)
Date: Fri, 14 Dec 2007 21:53:41 +0100
Subject: High speed web services
In-Reply-To: <0e0b02d9-0229-4ea1-8009-57dafec65941@t1g2000pra.googlegroups.com>
References: <0e0b02d9-0229-4ea1-8009-57dafec65941@t1g2000pra.googlegroups.com>
Message-ID: 

herbasher pisze:

> How do I built highly available and lighting fast Python webservice?

Write optimized code and use it in conjunction with twisted.web.

-- 
Jarek Zgoda
http://zgodowie.org/

From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Thu Dec 13 05:31:34 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Thu, 13 Dec 2007 11:31:34 +0100
Subject: Is Python really a scripting language?
In-Reply-To: 
References: <009101c83c55$4ee07a00$6501a8c0@aristotle>

	<4761011a$0$5462$426a74cc@news.free.fr>

Message-ID: <476109f3$0$13493$426a74cc@news.free.fr>

Marco Mariani a ?crit :
> Bruno Desthuilliers wrote:
> 
>> As far as I'm concerned, anyone (I mean, anyone pretending to be a 
>> programmer) being ignorant enough to ask such a question ranks high in 
>> my bozo list. Don't waste time with bozos.
> 
> 
> Alan Kay said it well enough without using words like "pretending", 
> "ignorant" and "bozo" :)

Probably. But I do like using these words, and having the opportunity to 
use them three in a same post really made me happy !-)

> http://acmqueue.com/modules.php?name=Content&pa=showpage&pid=273
> 
> It's worth a read.

Whenever I'll get a couple minutes.

From ecir.hana at gmail.com  Sat Dec 15 19:44:34 2007
From: ecir.hana at gmail.com (ecir.hana at gmail.com)
Date: Sat, 15 Dec 2007 16:44:34 -0800 (PST)
Subject: Inter-process communication, how?
Message-ID: 

Hi,
let's say I have two scripts: one does some computations and the other
one is a graphical front end for launching the first one. And both run
in separate processes (front end runs and that it spawns a subprocess
with the computation). Now, if the computation has a result I would
like to display it in the front end. In another words, I would like to
pass some data from one process to another. How to do that? I'm
affraid I can't use a pipe since the computation could print out some
logging (if I understant pipes correctly).
Thanks!

From g.bassi at iperbole.bologna.it  Sun Dec  2 09:51:56 2007
From: g.bassi at iperbole.bologna.it (Giancarlo Bassi)
Date: Sun, 2 Dec 2007 15:51:56 +0100
Subject: question involving installation of python applications
Message-ID: 

Why python interpreter has two copies ?:

so that:

ls -l python*
-rwxr-xr-x  1 root root 2288515 Nov 10 13:41 python
lrwxrwxrwx  1 root root      16 Jul  3 02:06 python-config ->
python2.5-config
-rwxr-xr-x  1 root root 2288515 Nov 22 00:25 python2.3
-rwxr-xr-x  1 root root    1424 Jul  3 02:06 python2.5-config

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

If someone wants to keep more python interpreters how
can avoid to superpose them.

Only by renaming ?
Is there reference into documentation ?

I want to keep python 2.3.5 and Zope-2.8-final for FLE3 (future learning 
environment) and install also pychess, requiring pygtk 2.x , (possibly for 
python 2.5.1)

While I managed to install FLE3 , after installing python2.5.1
I didn't success to run again the daemon for running Zope-2.8.

I got somewhat like that:

aka-ankku at aka-ankku:/home/aka-ankku/Zope-2.8.0-final$ bin/zopectl
Traceback (most recent call last):
   File
"/mnt/hd/home/aka-ankku/Zope-2.8.0-final/lib/python/Zope2/Startup/zopectl.py
", line 43, in ?
     import Zope2.Startup
   File
"/mnt/hd/home/aka-ankku/Zope-2.8.0-final/lib/python/Zope2/__init__.py", 
line
60, in ?
     from Zope2.Startup.run import configure
   File
"/mnt/hd/home/aka-ankku/Zope-2.8.0-final/lib/python/Zope2/Startup/__init__.p
y", line 24, in ?
     import ZConfig
   File
"/mnt/hd/home/aka-ankku/Zope-2.8.0-final/lib/python/ZConfig/__init__.py",
line 21, in ?
     from ZConfig.loader import loadConfig, loadConfigFile
   File
"/mnt/hd/home/aka-ankku/Zope-2.8.0-final/lib/python/ZConfig/loader.py", 
line 26, in ?
     import ZConfig.schema
   File
"/mnt/hd/home/aka-ankku/Zope-2.8.0-final/lib/python/ZConfig/schema.py", 
line
44, in ?
     class BaseParser(xml.sax.ContentHandler):
AttributeError: 'module' object has no attribute 'ContentHandler'
--------------------------------------------------------------------------

Why 'module' object has no attribute 'ContentHandler' ?

THX,
 		GB

---
"I'm no Pawn, I'm Donald Duck ! "
        -- Donald in MathMagic Land

From kevin.p.dwyer at gmail.com  Fri Dec  7 17:07:06 2007
From: kevin.p.dwyer at gmail.com (kdwyer)
Date: Fri, 7 Dec 2007 14:07:06 -0800 (PST)
Subject: "finding hostid with python"
References: <73cc5d9f-a3d3-4c3a-9893-24f35dffd831@d21g2000prf.googlegroups.com>
Message-ID: <96011a4a-72dd-4c26-afa4-8524832a608c@e10g2000prf.googlegroups.com>

On Dec 7, 9:10 pm, farsheed  wrote:
> I,m searching  for a way to obtain hostid in windows.
> Any ideas?

IIRC, MArk Hammond's extensions for windows have a method for
obtaining the fully qualified hostname of a machine.

Kev

From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Tue Dec  4 07:11:04 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Tue, 04 Dec 2007 13:11:04 +0100
Subject: Why use Slot? from Peter Norvig's AI code
In-Reply-To: <70161450-5ea7-4527-9228-70b397dce0af@d27g2000prf.googlegroups.com>
References: <70161450-5ea7-4527-9228-70b397dce0af@d27g2000prf.googlegroups.com>
Message-ID: <475543d7$0$9188$426a74cc@news.free.fr>

Davy a ?crit :
> Hi all,
> 
> When reading Python source code of Peter Norvig's AI book, I found it
> hard for me to understand the idea of slot (function nested in
> function). 

First point : this code seems to be based on an older (way older) Python 
version, so some things would not be done that way no more. Also, in 
newer (well... not that new, but...) Python versions, the term 'slot' 
has a quite different meaning (for short: a memory optimization for 
attributes...). FWIW, what the author names 'slots' here are really 
instance attributes - not the use of inner functions (please refer to 
the class's docstring and __init__ method code).

> Please see "program()" nested in "make_agent_program()",
> why not use program() directly?

It's a local variable of make_agent_program, so unless you bind it to 
another name (which is done in the __init__), you can't access it from 
outside make_agent_program.

The intent - which is explained in the docstring - is to make sure the 
'program' function won't access the Agent instance - so it was obviously 
written for a Python version that predates lexical closures support (you 
can do some archeological research to find out when this support was 
added if you want !-).

Now this implementation, whatever it was worth by the time this code was 
written (some 5 or more years ago AFAICT) would be considered a WTF with 
newer Python versions - where the obvious solution would be to define 
"program" as a staticmethod.

HTH

From istvan.albert at gmail.com  Sat Dec 29 13:49:58 2007
From: istvan.albert at gmail.com (Istvan Albert)
Date: Sat, 29 Dec 2007 10:49:58 -0800 (PST)
Subject: Bizarre behavior with mutable default arguments
References: 
	<47768DE0.5050406@v.loewis.de>
Message-ID: 

On Dec 29, 1:11 pm, "Martin v. L?wis"  wrote:

> Google for "Python mutable default arguments"

and a mere 30 minutes later this thread is already one of the results
that come up

From montyphyton at gmail.com  Mon Dec 24 10:22:02 2007
From: montyphyton at gmail.com (montyphyton at gmail.com)
Date: Mon, 24 Dec 2007 07:22:02 -0800 (PST)
Subject: list in a tuple
Message-ID: 

Recently, I got into a debate on programming.reddit.com about
what should happen in the following case:

>>> a = ([1], 2)
>>> a[0] += [3]

Currently, Python raises an error *and* changes the first element of
the tuple. Now, this seems like something one would want to
change - why raise an error *and* execute the thing it
was complaining about? The discussion seems to have no end, and
that is why I'm posting here. I would like to know what is the opinion
of the people on this group... Am I really mistaking for thinking that
this is strange and unwanted behavior? Btw I understand *why* is this
happening, I just think it should change...
And here is the post that started this discussion:
http://filoxus.blogspot.com/2007/12/python-3000-how-mutable-is-immutable.html#links

Thanks for your replies

From BjornSteinarFjeldPettersen at gmail.com  Thu Dec  6 19:07:26 2007
From: BjornSteinarFjeldPettersen at gmail.com (thebjorn)
Date: Thu, 6 Dec 2007 16:07:26 -0800 (PST)
Subject: Calculate an age
References: <3cc59ef1-ecd4-4b7c-ac8b-9bb7f3f83aa3@n20g2000hsh.googlegroups.com>

Message-ID: <8f10495a-a6de-4e4a-b2dd-fc71413c6ec3@d4g2000prg.googlegroups.com>

On Dec 6, 11:19 pm, John Machin  wrote:
> On Dec 7, 8:34 am, Pierre Quentel  wrote:
>
> > Hi all,
>
> > I have searched in the standard distribution if there was a function
> > to return the difference between 2 dates expressed like an age :
> > number of years, of months and days. The difference between datetime
> > instances returns a timedelta object that gives a number of days, but
> > not an age
>
> > So is there such a function somewhere ? If not, for what reason, since
> > it's a rather usual task
>
> and a rather usually imprecisely specified task [what do you mean by
> "number of months"?] with multiple interpretations/implementations/
> doctrines the publication of any one of which attracts a truckload of
> rotten tomatoes and derision from adherents of other sects :-)

It may be imprecisely specified, yet it's quite useful anyway. I've
got an implementation at http://blog.tkbe.org/archive/python-how-old-are-you/
if anyone's interested..

-- bjorn

From andre.roberge at gmail.com  Wed Dec 26 22:36:29 2007
From: andre.roberge at gmail.com (=?ISO-8859-1?Q?Andr=E9?=)
Date: Wed, 26 Dec 2007 19:36:29 -0800 (PST)
Subject: Subject changed: Bug in combining htmlentitydefs.py and ElementTree?
References: <803d10b9-01f0-4a1f-bc6a-6e12f17c308b@v32g2000hsa.googlegroups.com>
	<4772e404$0$15853$9b622d9e@news.freenet.de>
	<35818f3d-1998-4cea-8236-44fcebce71e9@x29g2000prg.googlegroups.com>
	<4772f76d$0$32111$9b622d9e@news.freenet.de>

Message-ID: 

Sorry for the top posting - I found out that the problem I encountered
was not something new in Python 3.0.

Here's a test program:
============
import xml.etree.ElementTree
ElementTree = xml.etree.ElementTree
import htmlentitydefs
class XmlParser(ElementTree.ElementTree):
    def __init__(self, file=None):
        ElementTree.ElementTree.__init__(self)
        parser = ElementTree.XMLTreeBuilder(
            target=ElementTree.TreeBuilder(ElementTree.Element))
        parser.entity = htmlentitydefs.entitydefs
        self.parse(source=file, parser=parser)
        return

f = open('test.html')
tree = XmlParser(f)
tree.write('test_out.html', encoding='utf-8')
======
This program should be run with the following test file (test.html):
=====

test

Α

======
If run as such, it will print out the following:
------

test

&#913;

-------
Notice how it is &#913; that appears instead of Α

This is the behaviour with both Python3.0 and 2.5.  (When I was
running with Python 2.5, I was always preprocessing the files with
BeautifulSoup, which removed many problems).

If I use "my_htmlentitiesdef.py" described in a previous message, I do
get an Alpha printed out (admittedly, not the character entity).

I would prefer to find a way to process such files and get Α
instead...  (or even, to process files with hard-coded characters e.g.
? instead of é and have them processed properly...).

unicode-challengedly-yrs,

Andr?

On Dec 26, 9:14 pm, "Andr?"  wrote:
> On Dec 26, 8:53 pm, "Martin v. L?wis"  wrote:
>
> > > Without an additional parser, I was getting the following error
> > > message:
> > [...]
> > > xml.parsers.expat.ExpatError: undefined entity ?: line 401, column 11
>
> > To understand that problem better, it would have been helpful to see
> > what line 401, column 11 of the input file actually says. AFAICT,
> > it must have been something like "&?;" which would be really puzzling
> > to have in an XML file (usually, people restrict themselves to ASCII
> > for entity names).
>
> No, that one was é   (testing with my own name that appeared in
> a file).
>
>
>
> > >             for entity in ent:
> > >                 if entity not in parser.entity:
> > >                     parser.entity[entity] = ent[entity]
>
> > This looks fine to me.
>
> > > The output was "wrong".  For example, one of the test I used was to
> > > process a copy of the main dict of htmlentitydefs.py inside an html page.  A
> > > few of the characters came ok, but I got things like:
>
> > > 'Α':    0x0391, # greek capital letter alpha, U+0391
>
> > Why do you think this is wrong?
>
> Sorry, that was just cut-and-pasted from the browser (not the source);
> in the source of the processed html page, it is
> '&#913;':    0x0391, # greek capital letter alpha, U+0391
>
> i.e.  the "&" was transformed into "&" in a number of places (all
> places above ascii 127 I believe).
>
> Here are a few more lines extracted from the html file that was
> processed:
> =============
>     '?':    0x00c2, # latin capital letter A with circumflex, U+00C2
> ISOlat1
>     '?':   0x00c0, # latin capital letter A with grave = latin capital
> letter A grave, U+00C0 ISOlat1
>     '&#913;':    0x0391, # greek capital letter alpha, U+0391
>     '?':    0x00c5, # latin capital letter A with ring above = latin
> capital letter A ring, U+00C5 ISOlat1
>     '?':   0x00c3, # latin capital letter A with tilde, U+00C3 ISOlat1
>     '?':     0x00c4, # latin capital letter A with diaeresis, U+00C4
> ISOlat1
>     '&#914;':     0x0392, # greek capital letter beta, U+0392
>     '?':   0x00c7, # latin capital letter C with cedilla, U+00C7
> ISOlat1
>     '&#935;':      0x03a7, # greek capital letter chi, U+03A7
>     '&#8225;':   0x2021, # double dagger, U+2021 ISOpub
>     '&#916;':    0x0394, # greek capital letter delta, U+0394
> ISOgrk3
>   ============
>
>
>
> > > When using my modified version, I got the following (which may not be
> > > transmitted properly by email...)
> > >     '?':    0x0391, # greek capital letter alpha, U+0391
>
> > > It does look like a Greek capital letter alpha here.
>
> > Sure, however, your first version ALSO has the Greek capital letter
> > alpha there; it is just spelled as Α (which *is* a valid spelling
> > for that latter in XML).
>
> Agreed that it would be... However that was not how it was
> transformed, see above; sorry if I was not clear about what was
> happening  (I should not have cut-and-pasted from the browser window).
>
>
>
> > > I hope the above is of some help.
>
> > Thanks; I now think that htmlentitydefs is just as fine as it always
> > was - I don't see any problem here.
>
> You may well be right in that the problem may lie elsewhere.  But as
> making the change I mentioned "fixed" the problem at my, I figured
> this was where the problem was located - and thought I should at least
> report it here.
>
> Regards,
> Andr?
>
> > Regards,
> > Martin

From lists at cheimes.de  Sun Dec  9 17:34:09 2007
From: lists at cheimes.de (Christian Heimes)
Date: Sun, 09 Dec 2007 23:34:09 +0100
Subject: Is a "real" C-Python possible?
In-Reply-To: <7tOdnRb-5fMW_MHanZ2dnUVZ_tmhnZ2d@comcast.com>
References: 	
	<7tOdnRb-5fMW_MHanZ2dnUVZ_tmhnZ2d@comcast.com>
Message-ID: <475C6D61.9020105@cheimes.de>

Jack wrote:
> I guess this is subjective :) - that's what I felt in my experience
> with web applications developed in Python and PHP. I wasn't able to
> find a direct comparison online.

Please compare the number of serious bugs and vulnerabilities in PHP and
Python.

> I understand. Python modules implemented in Python - this is how
> Python gets its really rich library.

Correct
Python code is much easier to write and multiple times easier to get
right than C code. Everybody with a few months of Python experience can
contribute to the core but it requires multiple years of C and Python
experience to contribute to the C implementation.

> I think most Java-Python benchmarks you can find online will indicate
> that Java is a 3-10 times faster. A few here:
> http://mail.python.org/pipermail/python-list/2002-January/125789.html
> http://blog.snaplogic.org/?p=55

There are lies, damn lies and benchmarks. :)

Pure Python code is not going to beat Java code until the Python core
gets a  JIT compiler. If you want fair results you have to either
disable the JIT in Java or use Psyco for Python. Otherwise you are
comparing the quality of one language implementation to the quality of a
JIT compiler.

> Here's an article that shows the new version of Ruby is
> faster than Python in some aspects (they are catching up :)
> http://antoniocangiano.com/2007/11/28/holy-shmoly-ruby-19-smokes-python-away/ 

The Ruby developers are allowed to be proud. They were able to optimize
some aspects of the implementation to get one algorithm about 14 times
faster. That's good work. But why was it so slow in the first place?

Nevertheless it is just one algorithm that beats Python in an area that
is well known to be slow. Python's numbers are several factors slower
than C code because the overhead of the dynamic language throws lots of
data out of the cache line. If you need fast and highly optimized int
and floating point operations you can rewrite the algorithm in C and
create a Python interface for it.

From andreas.tawn at ubisoft.com  Wed Dec  5 11:37:44 2007
From: andreas.tawn at ubisoft.com (Andreas Tawn)
Date: Wed, 5 Dec 2007 17:37:44 +0100
Subject: Timeout test hangs IDLE
In-Reply-To: <8AEDA5E3386EA742B8C24C95FF0C758002769405@PDC-MAIL3.ubisoft.org>
References: <31ac8ae6-b2fb-4a8c-87ca-bf839d901312@e10g2000prf.googlegroups.com>
	<8AEDA5E3386EA742B8C24C95FF0C758002769405@PDC-MAIL3.ubisoft.org>
Message-ID: <8AEDA5E3386EA742B8C24C95FF0C758002769406@PDC-MAIL3.ubisoft.org>

> > On Dec 5, 6:00 am, "Andreas Tawn"  wrote:
> > > I'm trying to integrate the timeout function from 
> > herehttp://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/47
> > 3878into a
> > > long running automation script and the following code 
> > causes IDLE after
> > > 20 or 30 iterations in countTest.
> > >
> > > This is in 2.5, XP and there's no traceback.
> > >
> > > Could someone point me at the user error?
> > >
> > > Thanks in advance.
> > >
> > > def countTest():
> > >     for i in xrange(10000000):
> > >         print i
> > >     return True
> > >
> > > def timeout(func, args=(), kwargs={}, timeout_duration=1, 
> > default=None):
> > >     import threading
> > >     class InterruptableThread(threading.Thread):
> > >         def __init__(self):
> > >             threading.Thread.__init__(self)
> > >             self.result = None
> > >
> > >         def run(self):
> > >             try:
> > >                 self.result = func(*args, **kwargs)
> > >             except:
> > >                 self.result = default
> > >
> > >     it = InterruptableThread()
> > >     it.start()
> > >     it.join(timeout_duration)
> > >     if it.isAlive():
> > >         return default
> > >     else:
> > >         return it.result
> > >
> > > def runTest():
> > >     timeout(countTest, timeout_duration=5)
> > >
> > > if __name__ == "__main__":
> > >     runTest()
> > 
> > I'm confused. What does it cause IDLE to do? I tried running the
> > script and it ran fine. I killed it 17346 since I have no 
> intention of
> > letting it tie up my work for your extraordinary large iteration
> > number.
> > 
> > I'm using Python 2.4 on Windows XP.
> > 
> > Mike
> 
> Sorry, I need a better proof-reader.
> 
> When I run that code, the output gets to ~26 and then IDLE (or the
> shell, I'm not sure which) hangs and there's  zero CPU activity in the
> pythonw.exe process.

Also, I should say that the the idea is that the huge iteration should
timeout after 5 seconds. I only gave it a 10000000 range because I
didn't know how fast it would get through the loop. Perhaps you stopped
it before the timeout triggered?

Cheers,

Drea

From shaik_saleem at hotmail.com  Fri Dec 21 14:45:22 2007
From: shaik_saleem at hotmail.com (shaik_saleem at hotmail.com)
Date: Fri, 21 Dec 2007 11:45:22 -0800 (PST)
Subject: How to draw IE browser content in a window created with PythonWin
Message-ID: <34eb84d5-d8e1-48a0-86e8-bdddbaed90d2@e25g2000prg.googlegroups.com>

I'm pretty new to Python and I've been searching all over the place
to
find a solution for this.
I have a html page with some javascript in it and I need to load this
page in my own window (which I will create using PythonWin). The
reason for this is to have capability to control the window
properties
and at the same time have access to click on the "submit" buttons in
the webpage

So basically, I will open a wepage as shown below -

import win32com.client
import win32api
import win32gui

ie = win32com.client.Dispatch( "InternetExplorer.Application" )
ie.Visible = 1
ie.Navigate("http://www.microsoft.com/")

And then I need to display it in a window that I will create as shown
below -
hwnd = CreateWindowEx(...)

I will be so grateful if anyone can please give me some pointers on
how to go
about this.

Thank you for reading

From esj at harvee.org  Sat Dec 15 18:01:26 2007
From: esj at harvee.org (Eric S. Johansson)
Date: Sat, 15 Dec 2007 18:01:26 -0500
Subject: Is Python really a scripting language?
In-Reply-To: <476433c5$0$36399$742ec2ed@news.sonic.net>
References: <009101c83c55$4ee07a00$6501a8c0@aristotle>		<2bc2ab76-da7b-43ec-969d-33f77b174a56@e6g2000prf.googlegroups.com>	<13m12513p8pfqb4@corp.supernews.com>		<4760fea4$0$31443$426a74cc@news.free.fr>	<13m4eefgi618319@corp.supernews.com>		<4762CAEE.20005@animats.com>	
	<476433c5$0$36399$742ec2ed@news.sonic.net>
Message-ID: <47645CC6.2060804@harvee.org>

John Nagle wrote:
> Eric S. Johansson wrote:
>> John Nagle wrote:
>>>      Yes.  One of the basic design flaws of UNIX was that interprocess
>>> communication was originally almost nonexistent, and it's still not 
>>> all that
>>> great.  It's easy to run other programs, and easy to send command line
>>> parameters, but all you get back is a status code, plus console-type 
>>> output.
>>>
>>>      The UNIX world might have been quite different if, when you ran a
>>> subprocess, at the end you got return values for the command line
>>> parameters (argv/argc) and the environment back.  Then programs
>>> would behave more like big subroutines. 
>> not if you use pickle.  
> 
>      That assumes both programs were designed to intercommunicate that way.
> Most UNIX applications aren't.  There's no accepted standard on how
> UNIX programs should intercommunicate, other than the 1970s technology
> of piping human-readable strings around.  Yes, there are marshalling
> systems, of which Python's "Pickle" is one.  But there's no standard
> interprocess call system.  And Pickle is only a marshalling system,
> not a full IPC system.  There's no resource location system. ("Where's
> the browser process?" "Where's the database back-end?")

I apologize if this gets you a bit cranky but I think you're conflating a few 
interprocess communications issues.  I know I didn't fully articulate what I had 
been doing and I apologize.

As your description above shows, there are multiple types of interprocess 
communications.  My example shows how it's possible to make two cooperatively 
designed programs act as if they are communicating via a remote procedure call 
across a parent-child process boundary.  Yes, other marshaling systems may be 
useful across multiple language environments.  I wasn't concerned about that.  I 
had to get a job done so I used pickle.

when it comes right down to it, IPC systems are hard to do right. 
http://birrell.org/andrew/papers/ImplementingRPC.pdf is a pretty good reference 
for how to do it for our PCs.  Also, the definition of right, depends on the 
communications medium used.  For example, if the application is using pipes with 
sub processes, what I wrote is a workable implementation especially if you need 
to deal with privilege escalation.  If you're talking over sockets or some 
equivalent communications channel, then yes, you need some form of resource 
location as well as handling methods exposure and resolution on both server and 
client side.  But even if you have all of these items, you're still not out of 
the woods.  There's a fundamental issue of reliability in the face of this 
complexity.  I've written some code with psycho and, this is not meant as a slam 
against psycho, but the resource location subsystem was causing more problems 
than I care to deal with so I eliminated it from my project by hard coding 
certain essential bits of information.

> 
>      Both Gnome and OpenOffice use CORBA. But they use incompatible versions,
> and you have to have a "CORBA ORB" running for that to work.  There's
> OpenRPC, which isn't used much any more.  There's "System V IPC", which
> isn't used much.  There are XML-based systems. There's REST, JSON, and
> similar approaches.  None of these approaches ever got the kind of
> widespread use that OLE did in the Microsoft world.

All of these examples are great examples of overly complex IPC mechanisms. 
while the complexity may be necessary if you are going to handle 99% of all 
cases, the complexity makes it more difficult to document functionality in a 
comprehensible way.  complexity reduces take up because it's too much work to 
figure out and use especially if it's a one-shot job.  I believe it's fairly 
clear that a very simple IPC mechanism could handle a significant majority of 
project needs while making IPC functionality accessible to more developers.  XML 
RPC almost achieves that except for its functional call orientation.  But, I'm 
not a waste any more breath on "what ifs" because there's way too much 
technological alpha male behavior to ever build a simple common infrastructure 
component for IPC (or almost any other widely usable components for that matter).

---eric

-- 
Speech-recognition in use.  It makes mistakes, I correct some.

From gagsl-py2 at yahoo.com.ar  Sun Dec 30 02:57:43 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Sat, 29 Dec 2007 23:57:43 -0800 (PST)
Subject: do i need to create new rgbimage class
References: <73ec5c59-0855-4b2b-8518-0b9f91abc42c@s8g2000prg.googlegroups.com>
Message-ID: 

On 29 dic, 12:42, jimgarde... at gmail.com wrote:

> am a beginner in python and PIL ?.I need to read an RGB 8 bit image
> (am using jpeg )and pack the rgb color values into a double value so i
> can store the image as a list of pixelvalues.From my application i
> should be able to call rgbimage1.getpixellist() to retrieve the double
> values of an image.

(May I ask why an accessor like getpixellist() instead of simply
rgbimage1.pixellist?)

> Do i need to create a new class for this?I made something like
>
> class myrgbimage:
> ? ? ? def ?__init__(self,filename):
>
> ? ? ? def _readimage(self):
> ? ? ? ? ? im=Image.open(filename)
> ? ? ? ? ? self._readImage(filename)
> ? ? ? ? ? self._wd,self._ht=im.size
> ? ? ? ? ? for y in range(self._ht):
> ? ? ? ? ? ? ? ?for x in range(self._wd):
> ? ? ? ? ? ? ? ? ? ? ?r,g,b=im.getpixel((x,y))
> ? ? ? ? ? ? ? ? ? ? ?pval=self.rgbTodoubleval((r,g,b))
> ? ? ? ? ? ? ? ? ? ? ?self._pixellist.append(pval)

The PIL docs at [1] say that using getpixel is very slow, and suggest
to use getdata instead. And you want a flat representation anyway,
just like getdata. So replace the for loops above with:

          rgbTodoubleval = self.rgbTodoubleval
          self._pixellist = [rgbTodoubleval(pix) for pix in
im.getdata()]

I've not tested it, but should be faster.

>       def rgbTodoubleval(self,(r,g,b)):
>           alpha=255
>           pixelvalue=(alpha<<24)|(r<<16 )|( g<<8) | b
>           return pixelvalue

I don't get the name - why "rgb to double"? This does not return a
"double", but a long integer, even if you intended to return a 32 bit
integer.
This version returns an integer:

from struct import pack, unpack
def rgbTodoubleval((r,g,b)):
  alpha=255
  return unpack("l", pack("BBBB", b, g, r, alfa))[0]

It *may*, or not, be what you want...

--
Gabriel Genellina

From adonisv at REMOVETHISearthlink.net  Sun Dec  2 12:39:03 2007
From: adonisv at REMOVETHISearthlink.net (Adonis Vargas)
Date: Sun, 02 Dec 2007 12:39:03 -0500
Subject: How can i find a file size on the web ?
In-Reply-To: <093310bd-2129-4468-9275-3042b0b6da50@b40g2000prf.googlegroups.com>
References: <093310bd-2129-4468-9275-3042b0b6da50@b40g2000prf.googlegroups.com>
Message-ID: <13l5rdpsfnp209d@corp.supernews.com>

Abandoned wrote:
> Hi..
> Can i find a file size witdhout download?
> For example: www.roche.com/rochea_z_sp.pdf
> How can i find its size with python ?
> I'm sorry for my bad english.

Typically you would just do an HTTP HEAD request in order to get 
information about the file without downloading it, but I tested the 
given site and it does not seem to support the HEAD request. Instead I 
used the GET request and read the headers in which contains information 
regarding the file as well, but opted no to read the data to avoid 
downloading it.

import httplib
connection = httplib.HTTPConnection("www.roche.com")
connection.request("GET", "/rochea_z_sp.pdf")
response = connection.getresponse()
print response.status, response.reason
print "File sie: %s" % response.getheader('content-length')

Also you can do:

import urllib
response = urllib.urlopen("http://www.roche.com/rochea_z_sp.pdf")
print response.info()

Hope this helps.

Adonis Vargas

From arkanes at gmail.com  Fri Dec 14 13:34:33 2007
From: arkanes at gmail.com (Chris Mellon)
Date: Fri, 14 Dec 2007 12:34:33 -0600
Subject: state machine and a global variable
In-Reply-To: <51719149-ab7f-45f4-9824-d3786ee49e24@e25g2000prg.googlegroups.com>
References: <51719149-ab7f-45f4-9824-d3786ee49e24@e25g2000prg.googlegroups.com>
Message-ID: <4866bea60712141034o7b73b2f9p43ca6324a5c31c51@mail.gmail.com>

On Dec 14, 2007 10:52 AM,   wrote:
> Dear list,
> I'm writing very simple state machine library, like this:
>
>
>
> _state = None
>
> def set_state(state):
>     global _state
>     _state = state
>
> def get_state():
>     print _surface
>
>
>
> but I hate to use global variable. So, please, is there a better way
> of doing this? All I want is that a user has to type as little as
> possible, like:
>

Yes, don't do it.

> from state_machine import *
> set_state(3)
> get_state()
>

This isn't a state machine, it's just state

> I.e., nothing like:
> import state_machine
> my_machine = state_machine.new_machine()
> my_machine.set_state(3)
> my_machine.get_state()
>

Stop being afraid of objects, especially if your fear is caused by
straw-man C style APIs.

from state_machine import State

state = State()
print state.current_state
state.do_something('sadfsafsad') #does something based on the current state
print state.current_state

From supercooper at gmail.com  Fri Dec  7 10:06:57 2007
From: supercooper at gmail.com (supercooper)
Date: Fri, 7 Dec 2007 07:06:57 -0800 (PST)
Subject: Converting Excel time-format (hours since 1.1.1901)
References: <6c5cc79e-a121-45c5-9a97-b8564ca9f3bf@l16g2000hsf.googlegroups.com>

Message-ID: <387dbfe1-a75b-4360-83cb-0fa500f51ba2@o42g2000hsc.googlegroups.com>

On Dec 7, 8:15 am, Dirk Hagemann  wrote:
> On 7 Dez., 14:34, supercooper  wrote:
>
>
>
> > On Dec 7, 7:20 am, Dirk Hagemann  wrote:
>
> > > Hello,
>
> > > From a zone-file of a Microsoft Active Directory integrated DNS server
> > > I get the date/time of the dynamic update entries in a format, which
> > > is as far as I know the hours since january 1st 1901.
> > > For Example: the number 3566839 is 27.11.07 7:00. To calculate this in
> > > Excel I use this:
> > > ="01.01.1901"+(A1/24-(REST(A1;24)/24))+ZEIT(REST(A1;24);0;0)  (put
> > > 3566839 in field A1 and switch the format of the result-field to the
> > > corresponding date-time format).
>
> > > You might guess what I need now: I want to calculate this somehow in
> > > python.
>
> > > Sorry, but I couldn't find anything in the module time or something
> > > else to get this calculated.
>
> > > Does anyone know how to convert this time in python to something
> > > usable or how to convert this formula in python?
>
> > > Thanks a lot and regards
> > > Dirk
>
> > I think you want the xldate_as_tuple function in the xlrd module:
>
> >http://www.lexicon.net/sjmachin/xlrd.htm
>
> > It works like a champ for me:
>
> > >>> import xlrd
> > >>> xlrd.xldate.xldate_as_tuple(38980,0)
>
> > (2006, 9, 20, 0, 0, 0)
>
> > chad!
>
> Thanks so far, that comes close to a solution I think, BUT when I
> enter 3566985 instead of 38980 I get the following error:
> Traceback (most recent call last):
>   File "test.py", line 20, in 
>     print xlrd.xldate.xldate_as_tuple(3566985,0)
>   File "C:\Python25\lib\site-packages\xlrd\xldate.py", line 75, in
> xldate_as_tuple
>     raise XLDateTooLarge(xldate)
> xlrd.xldate.XLDateTooLarge: 3566985
>
> Do I have to use another function of this module? My number is 2
> digits shorter than yours. What is 38980 representing?
>
> Dirk

Excel stores dates as floating point
numbers; the number of days (or fraction thereof) since
12/31/1899. So 38980.0 is midnight 9/20/2006. You think your numbers
represent
the number of hours since 1/1/1901?

3,566,985 hrs/24 hrs in a day = ~148,618 days
148,618 days/365 days in a year = ~407 years

Am I doing the math wrong?

From timr at probo.com  Thu Dec 20 01:51:16 2007
From: timr at probo.com (Tim Roberts)
Date: Thu, 20 Dec 2007 06:51:16 GMT
Subject: Does fileinput.input() read STDIN all at once?
References: <940l35-7lu.ln1@news.ducksburg.com>
Message-ID: 

Adam Funk  wrote:
>
>I'm using this sort of standard thing:
>
>   for line in fileinput.input():
>      do_stuff(line)
>
>and wondering whether it reads until it hits an EOF and then passes
>lines (one at a time) into the variable line.  This appears to be the
>behaviour when it's reading STDIN interactively (i.e. from the
>keyboard).
>
>As a test, I tried this:
>
>   for line in fileinput.input():
>      print '**', line
>
>and found that it would print nothing until I hit Ctl-D, then print
>all the lines, then wait for another Ctl-D, and so on (until I pressed
>Ctl-D twice in succession to end the loop).

Note that you are doing a lot more than just reading from a file here. This
is calling a function in a module.  Fortunately, you have the source to
look at.

As I read the fileinput.py module, this will eventually call
FileInput.next(), which eventually calls FileInput.readline(), which
eventually calls stdin.readlines(_bufsize).  The default buffer size is
8,192 bytes.
-- 
Tim Roberts, timr at probo.com
Providenza & Boekelheide, Inc.

From dahlbokum at intes.de  Mon Dec 17 08:50:55 2007
From: dahlbokum at intes.de (Markus Dahlbokum)
Date: Mon, 17 Dec 2007 14:50:55 +0100
Subject: Static linking of python and pyqt
Message-ID: <200712171450.55840.dahlbokum@intes.de>

Hello,

I'm trying to link python statically with qt and pyqt. I've tried this in 
several ways but never succeeded. At the moment the final make runs without 
errors but I get import errors when accessing pyqt.
How can I solve this problem?

Markus

# installing zipimport hook
import zipimport # builtin
# installed zipimport hook
# /opt/python-2.4.4/lib/python2.4/site.pyc 
matches /opt/python-2.4.4/lib/python2.4/site.py
import site # precompiled from /opt/python-2.4.4/lib/python2.4/site.pyc
# /opt/python-2.4.4/lib/python2.4/os.pyc 
matches /opt/python-2.4.4/lib/python2.4/os.py
import os # precompiled from /opt/python-2.4.4/lib/python2.4/os.pyc
import posix # builtin
# /opt/python-2.4.4/lib/python2.4/posixpath.pyc 
matches /opt/python-2.4.4/lib/python2.4/posixpath.py
import posixpath # precompiled 
from /opt/python-2.4.4/lib/python2.4/posixpath.pyc
# /opt/python-2.4.4/lib/python2.4/stat.pyc 
matches /opt/python-2.4.4/lib/python2.4/stat.py
import stat # precompiled from /opt/python-2.4.4/lib/python2.4/stat.pyc
# /opt/python-2.4.4/lib/python2.4/UserDict.pyc 
matches /opt/python-2.4.4/lib/python2.4/UserDict.py
import UserDict # precompiled 
from /opt/python-2.4.4/lib/python2.4/UserDict.pyc
# /opt/python-2.4.4/lib/python2.4/copy_reg.pyc 
matches /opt/python-2.4.4/lib/python2.4/copy_reg.py
import copy_reg # precompiled 
from /opt/python-2.4.4/lib/python2.4/copy_reg.pyc
# /opt/python-2.4.4/lib/python2.4/types.pyc 
matches /opt/python-2.4.4/lib/python2.4/types.py
import types # precompiled from /opt/python-2.4.4/lib/python2.4/types.pyc
# /opt/python-2.4.4/lib/python2.4/warnings.pyc 
matches /opt/python-2.4.4/lib/python2.4/warnings.py
import warnings # precompiled 
from /opt/python-2.4.4/lib/python2.4/warnings.pyc
# /opt/python-2.4.4/lib/python2.4/linecache.pyc 
matches /opt/python-2.4.4/lib/python2.4/linecache.py
import linecache # precompiled 
from /opt/python-2.4.4/lib/python2.4/linecache.pyc
import encodings # directory /opt/python-2.4.4/lib/python2.4/encodings
# /opt/python-2.4.4/lib/python2.4/encodings/__init__.pyc 
matches /opt/python-2.4.4/lib/python2.4/encodings/__init__.py
import encodings # precompiled 
from /opt/python-2.4.4/lib/python2.4/encodings/__init__.pyc
# /opt/python-2.4.4/lib/python2.4/codecs.pyc 
matches /opt/python-2.4.4/lib/python2.4/codecs.py
import codecs # precompiled from /opt/python-2.4.4/lib/python2.4/codecs.pyc
import _codecs # builtin
# /opt/python-2.4.4/lib/python2.4/encodings/aliases.pyc 
matches /opt/python-2.4.4/lib/python2.4/encodings/aliases.py
import encodings.aliases # precompiled 
from /opt/python-2.4.4/lib/python2.4/encodings/aliases.pyc
# /opt/python-2.4.4/lib/python2.4/encodings/utf_8.pyc 
matches /opt/python-2.4.4/lib/python2.4/encodings/utf_8.py
import encodings.utf_8 # precompiled 
from /opt/python-2.4.4/lib/python2.4/encodings/utf_8.pyc
Python 2.4.4 (#1, Dec  7 2007, 11:16:51)
[GCC 4.1.2 20061115 (prerelease) (Debian 4.1.1-21)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import QtCore
import QtCore # builtin
import sip # builtin
Traceback (most recent call last):
  File "", line 1, in ?
SystemError: _PyImport_FixupExtension: module QtCore not loaded
>>> import sys
>>> print sys.builtin_module_names
('QtCore', 'QtGui', '__builtin__', '__main__', '_codecs', '_sre', '_symtable', 'errno', 'exceptions', 'gc', 'imp', 'marshal', 'posix', 'pwd', 'signal', 'sip', 'sys', 'thread', 'time', 'xxsubtype', 'zipimport')
>>>
# clear __builtin__._
# clear sys.path
# clear sys.argv
# clear sys.ps1
# clear sys.ps2
# clear sys.exitfunc
# clear sys.exc_type
# clear sys.exc_value
# clear sys.exc_traceback
# clear sys.last_type
# clear sys.last_value
# clear sys.last_traceback
# clear sys.path_hooks
# clear sys.path_importer_cache
# clear sys.meta_path
# restore sys.stdin
# restore sys.stdout
# restore sys.stderr
# cleanup __main__
# cleanup[1] site
# cleanup[1] encodings
# cleanup[1] _codecs
# cleanup[1] zipimport
# cleanup[1] PyQt4.QtCore
# cleanup[1] warnings
# cleanup[1] encodings.utf_8
# cleanup[1] codecs
# cleanup[1] types
# cleanup[1] signal
# cleanup[1] linecache
# cleanup[1] posix
# cleanup[1] encodings.aliases
# cleanup[1] exceptions
# cleanup[2] copy_reg
# cleanup[2] sip
# cleanup[2] posixpath
# cleanup[2] os.path
# cleanup[2] stat
# cleanup[2] UserDict
# cleanup[2] os
# cleanup sys
# cleanup __builtin__
# cleanup ints: 7 unfreed ints in 1 out of 3 blocks
# cleanup floats

From skawanagi at gmail.com  Mon Dec 10 19:54:08 2007
From: skawanagi at gmail.com (mosi)
Date: Mon, 10 Dec 2007 16:54:08 -0800 (PST)
Subject: Any way to program custom syntax to python prompt? >> I want to edit 
	matrices.
Message-ID: <639ad9a8-83ac-41b3-abf2-0759e70eb839@r60g2000hsc.googlegroups.com>

Python matrices are usually defined with numpy scipy array or similar.
e.g.
>>> matrix1 = [[1, 2], [3, 4], [5, 6]]
I would like to have easier way of defining matrices,
for example:
>>> matrix = [1, 2; 3, 4; 5, 6]

>>> matrix =
[ 1, 2;
  3, 4;
  5, 6;]

Any ideas how could this be done? The ";" sign is reserved, the "[ ]"
is used for lists.

Also, how to program custom operations for this new "class?"
matrix ???

For example:
>>> matrix + 2
[ 3, 4;
  5, 6;
  7, 8;]

Possibly with operator overloading?
I appreciate all your comments, directions, pointers.
mosi

From jo at durchholz.org  Sat Dec 29 04:30:32 2007
From: jo at durchholz.org (Joachim Durchholz)
Date: Sat, 29 Dec 2007 10:30:32 +0100
Subject: Choosing a new language
In-Reply-To: 
References: <20071228162351.f29a3ce4.coolzone@it.dk>
	<477561af$0$36390$742ec2ed@news.sonic.net>

Message-ID: 

George Neuner schrieb:
> I know not everyone
> works in RT, but I can't possibly be alone in developing applications
> that are hard to restart effectively.

Indeed. An additional case is interactive applications where setting up 
the situation to be tested requires several time-consuming steps.

Regards,
Jo

From ilias at lazaridis.com  Sat Dec 22 10:46:06 2007
From: ilias at lazaridis.com (Ilias Lazaridis)
Date: Sat, 22 Dec 2007 07:46:06 -0800 (PST)
Subject: Detecting memory leaks on apache, mod_python
References: <6f624cbd-294b-4a45-bf23-4219d8d6245e@x69g2000hsx.googlegroups.com>
	<2e1f149b-adc4-4e63-9161-c3de1bcbae77@j20g2000hsi.googlegroups.com> 

	<5t1sv1F1b421hU1@mid.uni-berlin.de>
	<13mp5uvs8psio75@corp.supernews.com> 

Message-ID: 

On 22 ???, 09:09, Fredrik Lundh  wrote:
[...]
> For Python, standard process monitoring tools (combined with a basic
> understanding of how dynamic memory allocation works on modern
> platforms) are usually sufficient to get a good view of an application's
> memory usage patterns.
[...]

which "standard process monitoring tools" are those?

Aren't there any python specific tools (e.g. which list the python
modules which use the memory)?

.

http://case.lazaridis.com/wiki/PythonAudit

From MonkeeSage at gmail.com  Fri Dec  7 03:37:11 2007
From: MonkeeSage at gmail.com (MonkeeSage)
Date: Fri, 7 Dec 2007 00:37:11 -0800 (PST)
Subject: __iadd__ useless in sub-classed int
References: <5b43ef4e-e8a7-4477-8f34-d337cdeaf8ab@e1g2000hsh.googlegroups.com>
	<5rqvttF15q694U1@mid.uni-berlin.de>
	<5f791364-eb19-44e1-87bf-12e65cded930@d27g2000prf.googlegroups.com>
	<9005dbaa-b6ac-415c-bed1-8a55f68e5d09@n20g2000hsh.googlegroups.com> 

Message-ID: 

On Dec 7, 12:45 am, "Gabriel Genellina" 
wrote:
> En Fri, 07 Dec 2007 03:01:28 -0300, MonkeeSage 
> escribi?:
>
> > I've wondered about this myself. Seems to me, to prevent clobbering
> > subclasses, __iadd__ (and all of the integer and float and whatever)
> > methods that return new instances, should work like this (obviously I
> > mean in the C backend, this is just to show the behavior):
>
> > def __iadd__(self, other):
> >   return self.__class__(self + other)
>
> This would slow down *all* of Python, and is only useful for those who
> actually inherit from some builtin class (not so common)
>
> --
> Gabriel Genellina

I understand why it doesn't. It just *seems* like it should work that
way when you first run into it (and has bitten me a couple times
before). But then, I'm not Dutch. :)

Regard,
Jordan

From timr at probo.com  Sat Dec  1 19:59:14 2007
From: timr at probo.com (Tim Roberts)
Date: Sun, 02 Dec 2007 00:59:14 GMT
Subject: python newbie - question about lexical scoping
References: 
Message-ID: <3n04l31j75i7ntsuql0ckru7iajfv3m8kr@4ax.com>

Matt Barnicle  wrote:

>hi everyone..  i've been chugging along learning python for a few months 
>now and getting answers to all needed questions on my own, but this one 
>i can't figure out nor can i find information on the internet about it, 
>possibly because i don't understand the right words to type into google..
>
>i have a very common scenario and need to know the python way to do it.  
>take this example loop:
>
>comments = []
>for row in rows:
>    comment = models.comment()
>    comment.author = row[1]
>    comment.text = row[0]
>    comments.append(comment)
>
>the problem is that when i go to retrieve the comments later, they are 
>all the same object!  i assume this is due to there being no lexical 
>scoping?  so what is the solution to this?

Is that REALLY what the code looks like?  Or does it actually look like
this:

  comments = []
  comment = models.comment()
  for row in rows:
      comment.author = row[1]
      comment.text = row[0]
      comments.append(comment)

That construct would produce exactly the result you describe.  You would
also get the result you describe if models.comment() were a normal function
that returns a single object, instead of a class name, as I have assumed.
-- 
Tim Roberts, timr at probo.com
Providenza & Boekelheide, Inc.

From scripteaze at gmail.com  Wed Dec 19 18:18:00 2007
From: scripteaze at gmail.com (scripteaze)
Date: Wed, 19 Dec 2007 15:18:00 -0800 (PST)
Subject: sending a rip1 request via python
References: <1603d479-76eb-4f76-8d5b-1dbd5ce79ddb@e4g2000hsg.googlegroups.com>

	<90c1519b-00a1-4165-ba8a-d8645d09e7e5@e23g2000prf.googlegroups.com>
Message-ID: <882edb1c-bd71-4480-a995-b81da5202039@s12g2000prg.googlegroups.com>

On Dec 19, 5:14 pm, scripteaze  wrote:
> On Dec 19, 10:34 am, Dirk Loss  wrote:
>
>
>
> > scripteaze wrote:
> > > I need to be able to send a rip1 request to my rip1 enabled device.,
> > > so i need python to send :
> > > 01 01 00 00 00 02 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> > > 10
>
> > Use Scapy:
>
> > from scapy import *
> > myrip = RIP()/RIPEntry(metric=16)
> > ans, unans = sr(IP(dst="192.168.1.1")/UDP(sport=520)/myrip)
>
> >http://www.secdev.org/projects/scapy/
>
> > Regards
> > Dirk
>
> Well, i use scapy quite often, however, this needs to be very portable
> from one box to another with out the installation of extra

I was not finished, lol, for some reason my keyboard went haywire and
did its own thing. Anywho, scapy is out of the question. any code
examples? and also, whats the alternative.

thanks in advance

From rodmena.com at gmail.com  Fri Dec 14 08:33:21 2007
From: rodmena.com at gmail.com (farsheed)
Date: Fri, 14 Dec 2007 05:33:21 -0800 (PST)
Subject: Better way to searching.
References: <4f5b3c60-e2c7-4365-81c2-99959b62b6c9@b1g2000pra.googlegroups.com>

Message-ID: <950efa91-27cf-43ca-9f9b-bc5d2a8a5010@s8g2000prg.googlegroups.com>

thanks, I'll try it.

From temp2 at cfl.rr.com  Sun Dec 16 15:32:36 2007
From: temp2 at cfl.rr.com (temp2 at cfl.rr.com)
Date: Sun, 16 Dec 2007 12:32:36 -0800 (PST)
Subject: Terminate capability ....
Message-ID: <029f6a2f-0ee4-4eca-a3b4-f4c3067c3b74@d21g2000prf.googlegroups.com>

Hello,

I'm new to Python. I have a small task to do. I need to be able to
find a running app (preferrably by name) and kill it. This is for the
XP environment. What is best way to do this?
Thanks,

From ianare at gmail.com  Fri Dec 21 15:48:23 2007
From: ianare at gmail.com (=?ISO-8859-1?B?aWFuYXLp?=)
Date: Fri, 21 Dec 2007 12:48:23 -0800 (PST)
Subject: mac dashboad
References: 
Message-ID: 

On Dec 21, 12:37 pm, Carl K  wrote:
> How do I hang an app off the mac dashboard?
>
> The goal is a python version of Weatherbug.
>
> something like:
> read xml data from a URL,
> display some numbers,
> mouse over shows more details
>
> Carl K

What is the dashboard - is it anything like the taskbar in windows/
Gnome? If it is, take a look at this:

http://www.wxwidgets.org/manuals/2.6.3/wx_wxtaskbaricon.html

From python.list at tim.thechases.com  Sat Dec  1 07:33:54 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Sat, 01 Dec 2007 06:33:54 -0600
Subject: "Python" is not a good name, should rename to "Athon"
In-Reply-To: <78bdd499-a263-4c68-8e43-e3e59b111c7e@a39g2000pre.googlegroups.com>
References: 
	<78bdd499-a263-4c68-8e43-e3e59b111c7e@a39g2000pre.googlegroups.com>
Message-ID: <475154B2.90300@tim.thechases.com>

> I agree that Python is not a good name for a programming language, but
> I'm afraid we're stuck with it.

Well, the language was going to be called "One of the cross beams
has gone out askew on the treadle" but that was a little unwieldy
and hard to understand when mumbled in a hury.  Searching for the
runtime "ootcbhgoaott" returns zero hits on Google.  That would
have guaranteed that the only hits that came back related to the
language.  However typing things like

 sh$ ootcbhgoaott myprog.ootcbhgoaott

became too cumbersome.  So they decided on Python instead.

Besides...nobody expected a kind of Spanish Inquisition...

Just-making-stuff-up'ly yers,

-tkc

From sharun.mg at gmail.com  Wed Dec 19 07:59:16 2007
From: sharun.mg at gmail.com (Sharun)
Date: Wed, 19 Dec 2007 04:59:16 -0800 (PST)
Subject: Need help with a regular expression
References: 
	<77d0fa90-580c-4429-9fb9-5c1fcd634328@t1g2000pra.googlegroups.com>
Message-ID: <04379109-0629-47e2-bbca-1b0561600117@d21g2000prf.googlegroups.com>

Thanks Marek!

From python.list at tim.thechases.com  Mon Dec 10 06:26:42 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Mon, 10 Dec 2007 05:26:42 -0600
Subject: Best way to protect my new commercial software.
In-Reply-To: <9771eb4a-fae5-472d-9cba-9a09ae077e3d@x69g2000hsx.googlegroups.com>
References: <8c9a903b-7f57-4a90-883a-5bb1f06fedf6@e6g2000prf.googlegroups.com>	<46303db5-7cd0-4424-9834-3458c4061229@w56g2000hsf.googlegroups.com>

	<9e1711a2-688b-4643-a276-659163e867f1@d61g2000hsa.googlegroups.com>
	<9771eb4a-fae5-472d-9cba-9a09ae077e3d@x69g2000hsx.googlegroups.com>
Message-ID: <475D2272.5090104@tim.thechases.com>

> So you say there is not any trusted way?

You cannot distribute any program with the expectation that it
cannot be reverse engineered.  Despite what various protection
companies would have folks believe.  At some point, the user's
CPU has to execute the code, and at that point, it can be
intercepted, unwound, and intercepted.

The *only* way to prevent people from reverse engineering your
code (until quantum computing becomes a household standard) is to
never give your code to them.  Keep it on your servers and only
allow users to access your service, not your code.

Or, you could just trust your customers to adhere to your
licensing terms (with this little thing called "the law" to back
you up, as long as your licensing terms are legal).  Then just
distribute your software and spend your energies making a better
product rather than chasing a quixotic dream of protection.

Customers prefer not to be treated as criminals.

-tkc

From xkenneth at gmail.com  Fri Dec 28 17:51:04 2007
From: xkenneth at gmail.com (xkenneth)
Date: Fri, 28 Dec 2007 14:51:04 -0800 (PST)
Subject: Tab indentions on different platforms?
Message-ID: <14a26d3f-94de-4887-b3f4-d837a2723f35@21g2000hsj.googlegroups.com>

All,

    I seem to be having problems with running my python code, written
on a Mac, on Linux and Windows boxes. It seems like the problem has to
do with tab indention, particularly I've noticed that my code will
completely ignore try statements. Has anyone had a similar problem?

Regards,
Ken

From nyamatongwe+thunder at gmail.com  Wed Dec 12 16:26:39 2007
From: nyamatongwe+thunder at gmail.com (Neil Hodgson)
Date: Wed, 12 Dec 2007 21:26:39 GMT
Subject: After running for four days, Python program stalled
In-Reply-To: <4760371e$0$36373$742ec2ed@news.sonic.net>
References: <4760371e$0$36373$742ec2ed@news.sonic.net>
Message-ID: 

John Nagle:

> Had a Python program stall, using no time, after running OK for four days.
> Python 2.4, Windows.  Here's the location in Python where it's stalled.
> Any idea what it's waiting for?
> 77FA144B   int         3                                # STALLED HERE

    Its a breakpoint instruction and its likely you are running under a 
debugger that is failing to respond. You don't often see a bare 'int 3' 
in real code unmassaged by a debugger unless the developer wants an 
explicit break to debugger.

    Neil

From rodmena.com at gmail.com  Sat Dec  1 06:05:16 2007
From: rodmena.com at gmail.com (farsheed)
Date: Sat, 1 Dec 2007 03:05:16 -0800 (PST)
Subject: "Show this file in explorer"
References: <8bca2fe0-c81f-4f93-8325-e0e99636762a@p69g2000hsa.googlegroups.com>

Message-ID: <8ec38759-2a7a-4864-a9e8-542200585e49@l16g2000hsf.googlegroups.com>

That was great. Thanks so sooooooooooooooooooooooooooooooooo much.
can you tell me where can I find that kind of trips?
Thanks Again.

From gagsl-py2 at yahoo.com.ar  Thu Dec 27 03:05:19 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Thu, 27 Dec 2007 05:05:19 -0300
Subject: Happy Christmas Pythoneers
References: <49cb0a4e-9256-44ee-9164-424b029a8f9c@y5g2000hsf.googlegroups.com>

	<8b4f001d-33d3-47d5-b523-f619f82769e8@f3g2000hsg.googlegroups.com>
Message-ID: 

En Thu, 27 Dec 2007 02:32:54 -0300, mensanator at aol.com  
 escribi?:

> On Dec 26, 9:43?pm, Steven D'Aprano
>  wrote:

>> watch_fireworks()
>> try:
>> ? ? champagne
>> except NameError:
>> ? ? champagne = any_fizzy_alcoholic_drink_will_do()
>> champagne.drink()
>> shout("Happy New Years!!!")
>> for person in adults_nearby:
>> ? ? if (person.is_appropriate_sex and person.is_pretty):
>
> Hey, my version of the person module doesn't have
> an is_appropriate_sex attribute, but an
> is_opposite_sex attribute instead. Is this a new version?

The default is_appropriate_sex implementation just happens to call  
is_opposite_sex, but this is an implementation detail and you should not  
rely on that, even more so if you didn't create that particular person  
instance.

-- 
Gabriel Genellina

From bj_666 at gmx.net  Sun Dec  9 03:49:57 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 9 Dec 2007 08:49:57 GMT
Subject: dictionary of dictionaries
References: <8bbf5f9a-e4ed-412c-bff8-45a316478a24@b1g2000pra.googlegroups.com>
Message-ID: <5s1ohlF16tekoU3@mid.uni-berlin.de>

On Sun, 09 Dec 2007 00:35:18 -0800, kettle wrote:

> Hi,
>  I'm wondering what the best practice is for creating an extensible
> dictionary-of-dictionaries in python?
> 
>  In perl I would just do something like:
> 
> my %hash_of_hashes;
> for(my $i=0;$i<10;$i++){
>     for(my $j=0;$j<10;$j++){
> 	${$hash_of_hashes{$i}}{$j} = int(rand(10));
>     }
> }
> 
> but it seems to be more hassle to replicate this in python.  I've
> found a couple of references around the web but they seem cumbersome.
> I'd like something compact.

Use `collections.defaultdict`:

from collections import defaultdict
from random import randint

data = defaultdict(dict)
for i in xrange(11):
    for j in xrange(11):
        data[i][j] = randint(0, 10)

If the keys `i` and `j` are not "independent" you might use a "flat"
dictionary with a tuple of both as keys:

data = dict(((i, j), randint(0, 10)) for i in xrange(11) for j in xrange(11))

And just for completeness: The given data in the example can be stored in a
list of lists of course:

data = [[randint(0, 10) for dummy in xrange(11)] for dummy in xrange(11)]

Ciao,
	Marc 'BlackJack' Rintsch

From pavlovevidence at gmail.com  Sat Dec 15 09:39:52 2007
From: pavlovevidence at gmail.com (Carl Banks)
Date: Sat, 15 Dec 2007 06:39:52 -0800 (PST)
Subject: container.___le___ can use only <=?
References: 
	<92ddc6c2-e24d-4c10-9bfe-0a5b6d37099f@o42g2000hsc.googlegroups.com>
	<56b659be-4f37-4abf-9944-b9529c0a950a@w40g2000hsb.googlegroups.com>
Message-ID: <35e45707-c095-4db1-b78f-7338b4efe1e9@w56g2000hsf.googlegroups.com>

On Dec 15, 9:05 am, ceru... at tds.net wrote:
> On Dec 15, 8:33 am, Carl Banks  wrote:
>
>
>
> > On Dec 14, 4:15 pm, Neil Cerutti  wrote:
>
> > > When implementing the rich comparison operators for some sort of
> > > container, it's tempting to save code by doing something like:
>
> > >  class LarchTree:
> > >    ...
> > >    def __gt__(self, other):
> > >      # A lot of code to traverse the tree
> > >    def __le__(self):
> > >      return not self > other
>
> > > However, if I'm thinking correctly, this is a bad idea. The
> > > reasoning being that > and <= are not required to be each others
> > > opposite for arbitrary value types, and may not even both be
> > > supplied by the contained objects.
>
> > And yet, by the same reasoning, using > and <= for list and tuple is
> > also a "bad idea".
>
> My reasoning is (I hope) that the container ought to support every
> comparison operation supported by the contained objects. This can be
> ensured by being careful in the implementation.

I see what you're asking now.  Yep, probably a bad idea to use that
shortcut.

Carl Banks

From benoit.barberousse at gmail.com  Thu Dec 20 06:35:23 2007
From: benoit.barberousse at gmail.com (Benoit)
Date: Thu, 20 Dec 2007 03:35:23 -0800 (PST)
Subject: Is there *any* real documentation to PyWin32?
Message-ID: 

I understand that the Win32 has been said to be itself poorly
documented, so perhaps that the documentation that comes with the
modules is of similar quality is no coincidence.  Maybe I'm still too
young in my programming to grasp the good of that documentation, but
for myself, it tells me next to nothing.  Could anyone point me to
anything which may exist that does a better job of explaining the
extensions' use?  I tried to take a look @ Microsoft's documentation,
but it was confusing.

From david.van.mosselbeen__NO-SPAM__ at telenet.be  Mon Dec 31 01:57:47 2007
From: david.van.mosselbeen__NO-SPAM__ at telenet.be (David Van Mosselbeen)
Date: Mon, 31 Dec 2007 06:57:47 GMT
Subject: Python for web...
References: <983c7459-7388-41ca-a192-b39805ea0b69@s8g2000prg.googlegroups.com>
Message-ID: 

on Tue, 25 Dec 2007 20:42:03 -0800 (PST), thushianthan15 at gmail.com  wrote:
>
> Hi everyone,
>
> I have to develop a web based enterprise application for my final year
> project. Since i am interested in open source, i searched the net.
> Almost 90% of them were PHP and MySQL. Cant we use python for that ? I
> tried several sites, but there is not enough tutorial for beginners
> [mod_python, PSP etc]. I couldnt find any detailed book, not even a
> single book :( All the python books are covering only CGI part)
>
> Any suggestions? Any recommended book?
>
> Execuse my English.
>
>                             Thushanthan.

You can also take a look to `webpy` and `cherrypy`. These where not yet
mentioned.

-- 
David Van Mosselbeen
http://dvm.zapto.org:8080/

From jigisbert.etra-id at grupoetra.com  Thu Dec 13 01:32:19 2007
From: jigisbert.etra-id at grupoetra.com (Jose Ignacio Gisbert)
Date: Thu, 13 Dec 2007 07:32:19 +0100
Subject: *SPAM*: 04.0/4.0 - Re: how to maximize a Tkinter Window in python
	TK???
In-Reply-To: 
References: <3f227a13-ae24-4f17-9a0b-2c7f01ccec05@c4g2000hsg.googlegroups.com>

Message-ID: <000f01c83d51$e9d7d2e0$2000a8c0@depid.local>

If you want to start with your main window maximized, you can do:

root = Tk()
root.state("zoomed")

Regards,
Naxo

-----Mensaje original-----
De: python-list-bounces+jigisbert.etra-id=grupoetra.com at python.org
[mailto:python-list-bounces+jigisbert.etra-id=grupoetra.com at python.org] En
nombre de Matimus
Enviado el: jueves, 13 de diciembre de 2007 2:18
Para: python-list at python.org
Asunto: *SPAM*: 04.0/4.0 - Re: how to maximize a Tkinter Window in python
TK???

On Dec 12, 3:11 pm, "d4v.j... at googlemail.com"
 wrote:
> hello @ all,
>
> subj?

example:
import Tkinter as tk

rt = tk.Tk()
rt.state("zoomed")
rt.overrideredirect(True)
can = tk.Canvas(rt, bg="black",borderwidth=0,highlightthickness=0)
can.pack(expand=True, fill=tk.BOTH)

def draw_rect(e):
    can.create_rectangle(e.x,e.y,e.x+100,e.y+100, fill='white',
outline='white')
can.bind("",draw_rect)
rt.bind("",lambda e:rt.destroy())

rt.mainloop()

-Matt

-- 
http://mail.python.org/mailman/listinfo/python-list

From i.pantusa at gmail.com  Fri Dec 14 15:42:46 2007
From: i.pantusa at gmail.com (i.pantusa at gmail.com)
Date: Fri, 14 Dec 2007 12:42:46 -0800 (PST)
Subject: Loops and things
References: 

Message-ID: <8238ee91-cc67-497a-bf51-951729809fce@i29g2000prf.googlegroups.com>

On Dec 14, 5:01 pm, Neil Cerutti  wrote:
> On 2007-12-14, rocco.ro... at gmail.com  wrote:
>
>
>
> > I was wondering how and if it's possible to write a loop in python
> > which updates two or more variables at a time. For instance, something
> > like this in C:
>
> > for (i = 0, j = 10; i < 10 && j < 20; i++, j++) {
> >     printf("i = %d, j = %d\n", i, j);
> > }
>
> > So that I would get:
>
> > i = 0, j = 0
> > i = 1, j = 1
> > i = 2, j = 2
> > ...
> > ...
> > ...
> > i = 9, j = 19
>
> > Can this be done in Python?
>
> Yes, assuming you meant to say:
>
> i = 0, j = 10
> i = 0, j = 11
> ...
> i = 9, j = 19
>
> import sys
> from itertools import izip
>
> for i, j in izip(xrange(10), xrange(10, 20)):
>   sys.stdout.write("i = %d, j = %d\n", (i, j))
>
> --
> Neil Cerutti
> To succeed in the world it is not enough to be stupid, you must also be well-
> mannered. --Voltaire

Yeah, that's what I meant ... ooops :)

Thanks a lot to everyone for the useful info. In the meantime I had
found out about zip and that way of doing it. But I really appreciated
all the different alternative solutions that were illustrated,
especially the more "functional" ones with map ... very cool, I'm also
a big Lisp fan, and I really dig those.

From t.rectenwald at gmail.com  Wed Dec 26 11:51:14 2007
From: t.rectenwald at gmail.com (t_rectenwald)
Date: Wed, 26 Dec 2007 08:51:14 -0800 (PST)
Subject: Writing Oracle Output to a File
References: <9ea3f90b-23e1-46c2-beb9-2b7cd8cf83cc@s48g2000hss.googlegroups.com>
Message-ID: 

On Dec 26, 10:36?am, t_rectenwald  wrote:
> Hello,
>
> I attempting to execute an Oracle query, and write the results to a
> file in CSV format. ?To do so, I've done the following:
>
> import cx_Oracle
> db = cx_Oracle.connect('user/pass at DBSID')
> cursor = db.cursor()
> cursor.arraysize = 500
> cursor.execute(sql)
> result = cursor.fetchall()
>
> The above works great. ?I'm able to connect to the database and print
> out the results as a list of tuples. ?Here is where I get lost. ?How
> do I work with a "list of tuples?" ?My understanding is that a "list"
> is basically an array (I don't come from a Python background). ?Tuples
> are a "collection of objects." ?So, if I do...
>
> print result[0]
>
> I get the first row of the query, which would make sense. ?The problem
> is that I cannot seem to write tuples to a file. ?I then do this...
>
> csvFile = open("output.csv", "w")
> csvFile = write(result[0])
> csvFile.close
>
> This generates an exception:
>
> TypeError: argument 1 must be string or read-only character buffer,
> not tuple
>
> So, I'm a bit confused as to the best way to do this. ?I guess I could
> try to convert the tuples into strings, but am not sure if that is the
> proper way to go. ?Any help would be appreciated. ?I've also seen a
> csv module out there, but am not sure if that is needed in this
> situation.
>
> Best Regards,
> Tom

Hello,

I was able to figure this out by using join to convert the tuples into
strings, and then have those write to the filehandle:

csvFile = open("output.csv", "w")
for row in cursor.fetchall():
    csvFile.write(','.join(row) + "\n")
csvFile.close

Regards,
Tom

From piet at cs.uu.nl  Thu Dec  6 10:12:20 2007
From: piet at cs.uu.nl (Piet van Oostrum)
Date: Thu, 06 Dec 2007 16:12:20 +0100
Subject: "Python" is not a good name, should rename to "Athon"
References: 
	<78bdd499-a263-4c68-8e43-e3e59b111c7e@a39g2000pre.googlegroups.com>

Message-ID: 

>>>>> "Adrian Cherry"  (AC) wrote:

>AC> Piet van Oostrum  wrote in
>AC> news:m28x49qads.fsf at cochabamba.cs.uu.nl: 

>>>>>>>> "Adrian Cherry"  (AC) wrote:
>>> 
>AC> For that matter C# is no better, I thought that # was
>>>> pronounced AC> hash, I still refer to C# as C-hash.
>>> 
>>> Are you musically illiterate?

>AC> Yup! The limits of my musically ability is

>AC> Spam, spam, spam, spam.
>AC> Lovely spam! Wonderful spaaam!
>AC> Lovely spam! Wonderful spam.
>AC> Spa-a-a-a-a-a-a-am! Spa-a-a-a-a-a-a-am!

>AC> Is that a problem? It's still a hash sign to me.

No problem, but if you know music notation, C# will ring a bell.
-- 
Piet van Oostrum 
URL: http://www.cs.uu.nl/~piet [PGP 8DAE142BE17999C4]
Private email: piet at vanoostrum.org

From bdesth.quelquechose at free.quelquepart.fr  Tue Dec 11 16:04:01 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Tue, 11 Dec 2007 22:04:01 +0100
Subject: Is anyone happy with csv module?
In-Reply-To: <15ab759b-0aec-45dd-88b9-c446c2b7d299@e10g2000prf.googlegroups.com>
References: <15ab759b-0aec-45dd-88b9-c446c2b7d299@e10g2000prf.googlegroups.com>
Message-ID: <475efb4f$0$18754$426a74cc@news.free.fr>

massimo s. a ?crit :
> Hi,
> 
> I'm struggling to use the python in-built csv module, and I must say
> I'm less than satisfied. Apart from being rather poorly documented, I
> find it especially cumbersome to use, and also rather limited. What I
> dislike more is that it seems working by *rows* instead than by
> *columns*.

Indeed.

> So I have some questions:
> 1) Is there a good tutorial, example collection etc. on the csv module
> that I'm missing?

Not AFAIK

> 2) Is there an alternative csv read/write module?

Not AFAIK

> 3) In case anyone else is as unhappy as me, and no tutorial etc.
> enlighten us, and no alternative is present, anyone is interested in
> an alternative csv module? I'd like to write one if it is the case.

As far as I'm concerned, and having spent some time trying to write a 
CSV module (before I noticed the existing one - duh...), I'm fully 
satisfied with the existing one. But if you feel like doing better and 
contributing it, by all means do it.

From pofuk at email.t-com.hr  Fri Dec 14 17:20:42 2007
From: pofuk at email.t-com.hr (SMALLp)
Date: Fri, 14 Dec 2007 23:20:42 +0100
Subject: Python import search path!
In-Reply-To: <6f899751-2117-4a5e-b6fd-70ea02dd6da4@s8g2000prg.googlegroups.com>
References: 
	<6f899751-2117-4a5e-b6fd-70ea02dd6da4@s8g2000prg.googlegroups.com>
Message-ID: 

kyosohma at gmail.com wrote:
> On Dec 14, 3:44 pm, SMALLp  wrote:
>> Hy!
>> I'm new in Linux, and i feel little less newer in python.
>>
>> I need advice and help. I'm making an application witch purpose is
>> irrelevant. It has a lot of code for now and I've only made interface.
>> So I've tried to split code into separate files and in windows as I
>> remember worked file when i wrote  eg. import myFile but now in Ubuntu
>> it says Module not found. (I'm using Ubuntu and I've installed python
>> 2.5 and wxPython 2.8.4, and I'm using GedIt as my favorite text editor).
>> The question is how to make this work (files are in the same folder)
>>
> 
> Not sure what is going on here from this description. You may need to
> use the sys module and add the path to your module temporarily.
> 
> import sys
> sys.path.append("//path/to/myFile")
> 
> 

I managed to make simple thing complicated. So what i was trying to do 
is to write part of my program in a separate file and than use "import 
myFile as my" to use classes written in that file.

		Thanks for the answer Mike!

From nospam at nospam.com  Wed Dec 26 17:04:33 2007
From: nospam at nospam.com (Gilles Ganault)
Date: Wed, 26 Dec 2007 23:04:33 +0100
Subject: [newbie] Read file, and append?
References: <2ig1n31tjm7hpj7k7mgg6stu51rdkq81ov@4ax.com>
	<13n2td29ahlcp3f@corp.supernews.com>
Message-ID: <1qj5n31h7nb4frm7bh1tn9pish3minhfao@4ax.com>

On Tue, 25 Dec 2007 13:27:09 -0800, Dennis Lee Bieber
 wrote:
>Ignoring the question of the proper I/O mode, I believe the I/O
>system MAY require one to perform a seek() when switching from read to
>write and vice versa...

I thought about this, but I don't understand why I would need to do
this:

myfile=open('test.txt','r+')
content = myfile.read()
myfile.seek()
myfile.write('added this')
myfile.close

Is there really no way to read from a file and append data to it while
keeping the file open?

Also, I noticed a problem with the code given by Garry: When opening a
file in binary mode, the EOF character is 0A, while Windows apps
expect 0D0A. VisualBasic was not happy :-)

From aaragao at gmail.com  Tue Dec 11 17:02:11 2007
From: aaragao at gmail.com (aaragao at gmail.com)
Date: Tue, 11 Dec 2007 14:02:11 -0800 (PST)
Subject: Tuples !?!?
References: 
	<475ef5c7$0$25948$426a34cc@news.free.fr>
Message-ID: <013f3fa0-fb00-4ab2-95d9-ce034714dfb0@i29g2000prf.googlegroups.com>

Ok. This is small code.

The problem is '2' != 2 there is a way of converting 'some number' in
number ?

Thanks.

# -*- coding: cp1252 -*-
import random
import csv
import struct
import array

# resultados para colocar nos campos
def gera_string(res):

	# acampo3
	acampo1=((0,5,'muito reduzidos'),(6,20,'reduzidos'),
(21,32,'satisfat?rios'),(33,40,'bons'),(41,45,'excelentes'))
	campo1=''

	for a in acampo1:
		print res[1]
		if (res[1]>=a[0] and res[1]<=a[1]):
			campo1=a[2]

	return campo1

# processar

res=['a','2']

print gera_string(res)

quit()

On 11 Dez, 20:40, Bruno Desthuilliers
 wrote:
> aara... at gmail.com a ?crit :
>

> > Hi,
>
> > Is the tuple comparison brooked in python ?!?!?
>
> Given the size and average level of the user base, I think this would
> have been noticed.
>
>
>
> > Try this
>
> If you hope anyone to try anything, please post the *minimal* working
> code showing the problem. And while your at it, also explain the
> expected result.
>
> > and you will see funny things:
>
> Sorry but the only thing I see so far is that your code needs refactoring.

From sjmachin at lexicon.net  Thu Dec 13 05:40:49 2007
From: sjmachin at lexicon.net (John Machin)
Date: Thu, 13 Dec 2007 02:40:49 -0800 (PST)
Subject: MySQLdb extracting to a list
References: <6b8888e2-ee92-4122-929a-4b2034ab297a@e10g2000prf.googlegroups.com>
Message-ID: 

On Dec 13, 9:03 pm, dave.... at googlemail.com wrote:
> Hi all,
>
> I've been searching the docs like mad and I'm a little new to python
> so apologies if this is a basic question.
>
> I would like to extract the results of the following query into a list
> - SELECT columnname FROM tablename. I use the following code.
>
> # Create a connection object and create a cursor
> db = MySQLdb.Connect( cursor = db.cursor()
> # Make SQL string and execute it
> sql = "SELECT columnname FROM tablename"
> cursor.execute(sql)
> # Fetch all results from the cursor into a sequence and close the
> connection
> results = cursor.fetchall()
> db.close()
> print results
>
> The output from the above gives the following:
>
> (('string1',), ('string2',), ('string3',))
>
> When I'm expecting
> ('string1', 'string2', 'string3')
>
> I could pass this through some string manipulation but I'd guess I'm
> doing something wrong. Please could someone point me in the right
> direction.
>

Your SQL query has returned 3 rows. Each row contains only 1 column.

Each row is returned as a tuple of 1 element. The whole result is a
tuple of 3 rows. You don't need string manipulation, you need tuple
manipulation.

Better example:
    select name, hat_size from friends;
results in:
(('Tom', 6), ('Dick', 7), ('Harry', 8))

so:
>>> result = (('Tom', 6), ('Dick', 7), ('Harry', 8))
>>> [row[0] for row in result]
['Tom', 'Dick', 'Harry']
>>> for n, h in result:
...    print 'Name: %s; hat size: %d' % (n, h)
...
Name: Tom; hat size: 6
Name: Dick; hat size: 7
Name: Harry; hat size: 8
>>> result[2][1]
8
>>>

HTH,
John

From raj.amal at gmail.com  Wed Dec 19 08:35:20 2007
From: raj.amal at gmail.com (Amal)
Date: Wed, 19 Dec 2007 19:05:20 +0530
Subject: HTML unit .
Message-ID: <3bfbb0bb0712190535h22fc0ebke38c9ff33ed44a4a@mail.gmail.com>

Is there something like HTML unit for python. I don't want to use jython and
use the existing Java based HTML unit.

Amal.
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From russblau at hotmail.com  Sat Dec 15 11:23:15 2007
From: russblau at hotmail.com (Russell Blau)
Date: Sat, 15 Dec 2007 11:23:15 -0500
Subject: Tkinter weirdness on Windows
In-Reply-To: 
References: 
Message-ID: 

I have some Tkinter programs that I run on two different machines.  On Machine W, which runs Python 2.5.1 on Windows XP, these programs run just fine.  On Machine H, which runs Python 2.5.1 on Windows XP, however, the same programs crash regularly.  The crashes are not Python exceptions, but rather are reported by Windows as errors in pythonw.exe.  (Of course, the error messages themselves contain absolutely no useful information.)  This happens whether I run them from the command prompt or from IDLE (although IDLE itself never crashes).  Further, the crashes occur at unpredictable times; sometimes the program will crash almost immediately upon startup, while at other times it will run for a while and then crash.

A couple of other points that may or may not have something to do with it.  (1) Both programs use the threading module to launch new threads from the GUI.  (2)  Machine H, but not Machine W, also has Python 2.2 installed on it.

I do recall seeing a message at some point that suggested that conflicts in the MS VC++ runtime DLLs might cause this sort of problem, but I haven't been able to find that information through a search, so I'm not sure which particular DLLs to look for.  Any help in tracking down the source of this problem would be appreciated.

Russ

_________________________________________________________________
Share life as it happens with the new Windows Live.
http://www.windowslive.com/share.html?ocid=TXT_TAGHM_Wave2_sharelife_122007
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From george.sakkis at gmail.com  Mon Dec 24 15:26:48 2007
From: george.sakkis at gmail.com (George Sakkis)
Date: Mon, 24 Dec 2007 12:26:48 -0800 (PST)
Subject: 5 queens
References: <9639f80c-5722-40c6-bd7b-b727d0a7804e@n20g2000hsh.googlegroups.com>
	<13mrp429n5oai2a@corp.supernews.com>
	<13mrpe0cccvrle3@corp.supernews.com> 

	<13msjn5erd72n2a@corp.supernews.com>
Message-ID: 

On Dec 23, 7:04 am, Steven D'Aprano wrote:

> def combinations(seq, n):
>     if n == 0:
>         yield []
>     else:
>         for i in xrange(len(seq)):
>             for cc in combinations(seq[i+1:], n-1):
>                 yield [seq[i]]+cc
>
> >>> for c in combinations(range(4), 3):
>
> ...     print c
> ...
> [0, 1, 2]
> [0, 1, 3]
> [0, 2, 3]
> [1, 2, 3]

Or if you only need to iterate over each combination once instead of
keeping around more than one of them, below is a more efficient
version that reuses the same list for all combinations. Also it
doesn't require the input sequence to implement slicing so it can be
used e.g. with xrange:

def itercombos(seq, n):
    def ifill(combo, i, start, end=len(seq), seq=seq, n=n):
        if i == n:
            yield combo
        else:
            i1 = i+1
            for j in xrange(start,end):
                combo[i] = seq[j]
                for combo in ifill(combo, i1, j+1):
                    yield combo
    for combo in ifill(n*[None],0,0):
        yield combo

>>> for c in itercombos(xrange(4), 3): print c

[0, 1, 2]
[0, 1, 3]
[0, 2, 3]
[1, 2, 3]

>>> for c in combinations(xrange(4), 3): print c

Traceback (most recent call last):
  File "combs.py", line 54, in 
    for c in combinations(xrange(4), 3): print c
  File "combs.py", line 12, in combinations
    for cc in combinations(seq[i+1:], n-1):
TypeError: sequence index must be integer, not 'slice'

George

From mensanator at aol.com  Fri Dec 14 15:09:33 2007
From: mensanator at aol.com (mensanator at aol.com)
Date: Fri, 14 Dec 2007 12:09:33 -0800 (PST)
Subject: Is Python really a scripting language?
References: <009101c83c55$4ee07a00$6501a8c0@aristotle>

Message-ID: <8ce054b2-9d24-4fdc-90cb-11d64bc2c17a@d4g2000prg.googlegroups.com>

On Dec 11, 10:34 pm, "Terry Reedy"  wrote:
> "Ron Provost"  wrote in message
>
> news:009101c83c55$4ee07a00$6501a8c0 at aristotle...
> But here's my problem, most of my coworkers, when they see my apps and
> learn that they are written in Python ask questions like, "Why would you
> write that in a scripting language?"  Whenever I hear a comment like that I
> can feel myself boiling inside.
> ===================
>
> I don't blame you.  Python is an full-fledged algorithm/programming
> language that was designed to *also* be used a scripting language.

When you buy a new car, which is more important, the styling
or what's under the hood?

Take, for example, Microsoft's slick new language F#.

F# (pronounced F Sharp) is a multi-paradigm programming language,
targeting the .NET Framework, that encompasses functional programming
as well as imperative object-oriented programming disciplines.
It is a variant of ML and is largely compatible with the OCaml
implementation.

Sounds pretty sexy, eh? And programs compile to .exe files, none
of that byte-code interpretation nonsense.

But you would never buy a car without taking a test drive, right?

So we can fire up the F# Interactive (Console) and put it in gear.

> #time;;

--> Timing now on

> open Math;;

Time 0.046875
> let mutable Z = 0I;;

val mutable Z : bigint

Time 0.156250
> Z <- Z + (BigInt.pow 3I 123295I) * (BigInt.pow 2I 0I);;
val it : unit = ()
Time 0.515625
>

About a half second to compute a number with 58827 decimal digits.

OTOH, that was only the first of 123296 terms. The time to compute
the full sequence is 0.515625*123296 seconds or 17.65 hours.

If it takes that long for a compiled .exe to run, just imagine how
long a lowly, byte-code interpreted language would take!

But wait...

...we don't have to imagine, we can take the Python out for a test
drive also.

>>> import collatz_functions
>>> import time
>>> sv = collatz_functions.build_sv(19,19,1000000,1541095)
>>> def Big_Z(sv):
	Z = 0
	e2 = 0
	e3 = len(sv) - 1
	t0 = time.time()
	for v in sv:
		Z += 3**e3 * 2**e2
		e3 -= 1
		e2 += v
	t1 = time.time()
	print (t1-t0)/60,'minutes'

>>> Big_Z(sv)
25.6775999983 minutes

Hold on...

That's for the whole sequence, not a single term!

25.67 MINUTES compared to 17.65 HOURS!

So, sure, some languages compile to .exe programs.

In the trade, we call that "polishing a turd".

From arkanes at gmail.com  Mon Dec 10 13:23:48 2007
From: arkanes at gmail.com (Chris Mellon)
Date: Mon, 10 Dec 2007 12:23:48 -0600
Subject: Best way to protect my new commercial software.
In-Reply-To: 
References: <8c9a903b-7f57-4a90-883a-5bb1f06fedf6@e6g2000prf.googlegroups.com>
	<46303db5-7cd0-4424-9834-3458c4061229@w56g2000hsf.googlegroups.com>

	<9e1711a2-688b-4643-a276-659163e867f1@d61g2000hsa.googlegroups.com>
	<9771eb4a-fae5-472d-9cba-9a09ae077e3d@x69g2000hsx.googlegroups.com>

Message-ID: <4866bea60712101023lb286ec9q900ba00a5e8570f5@mail.gmail.com>

On Dec 10, 2007 5:56 AM, Carl Banks  wrote:
> On Dec 10, 6:26 am, Tim Chase  wrote:
> > > So you say there is not any trusted way?
> >
> > You cannot distribute any program with the expectation that it
> > cannot be reverse engineered.
> [snip]
>
>
> >From the OP's post, it seemed likely to me that the OP was asked by a
> misguided management to make sure it was "reverse-engineer-proof".  So
> any attempt to convince the OP may be aimed at the wrong person.
>
> Misguided as they are, sometimes you have to placate these people.
> So, are there any ways to make it "harder" to reverse engineer a
> program?
>
>

Just telling them you did is at least as effective as anything else.
Anyone who knows enough to know that you're lying knows why it's
impossible.

From arkanes at gmail.com  Fri Dec 21 17:06:39 2007
From: arkanes at gmail.com (Chris Mellon)
Date: Fri, 21 Dec 2007 16:06:39 -0600
Subject: mac dashboad
In-Reply-To: <4aWdnRg9NK_KsvHanZ2dnUVZ_rfinZ2d@comcast.com>
References: 

	<4aWdnRg9NK_KsvHanZ2dnUVZ_rfinZ2d@comcast.com>
Message-ID: <4866bea60712211406i46cec0b0m81899a5a734d2f4f@mail.gmail.com>

On Dec 21, 2007 3:25 PM, Carl K  wrote:
> ianar? wrote:
> > On Dec 21, 12:37 pm, Carl K  wrote:
> >> How do I hang an app off the mac dashboard?
> >>
> >> The goal is a python version of Weatherbug.
> >>
> >> something like:
> >> read xml data from a URL,
> >> display some numbers,
> >> mouse over shows more details
> >>
> >> Carl K
> >
> > What is the dashboard - is it anything like the taskbar in windows/
> > Gnome? If it is, take a look at this:
> >
> > http://www.wxwidgets.org/manuals/2.6.3/wx_wxtaskbaricon.html
>
> Yes.  But I don't want to rely on wx - trying to use just native mac python
> (whatever they ship with)
>

Dashboard widgets are written using HTML and Javascript. They are
rendered by a WebKit instance which, as far as I know, has no
mechanism for Python scripting. Unless it does, you can't write a
widget in Python, and even so you wouldn't use wx (or any other GUI
toolkit) to do so - your display medium is HTML and the Canvas object.
There's lots of articles on developer.apple.com about writing
Dashboard widgets.

From pict100 at gmail.com  Thu Dec 13 07:35:58 2007
From: pict100 at gmail.com (DarkBlue)
Date: Thu, 13 Dec 2007 04:35:58 -0800 (PST)
Subject: kniterbasdb and datetime
References: 
Message-ID: <17e6d6f4-7d8e-46c4-95ef-0afd19741b37@i12g2000prf.googlegroups.com>

On Dec 13, 7:45 pm, Laszlo Nagy  wrote:
>   Hi All,
>
> I connected to a FireBird 1.5 database this way:
>
> import kinterbasdb
> kinterbasdb.init(type_conv=200) # Seehttp://kinterbasdb.sourceforge.net/dist_docs/usage.html#faq_fep_is_mx...
>
> Then I try to update the database:
>
> sql = "UPDATE TABLE1 SET DATEFIELD=? where ID = ?"
> params=[datetime.date(2007,11,01),2341]
> cursor.execute(sql,params)
>
> I get this error:
>
> kinterbasdb.ProgrammingError: (-413, 'isc_dsql_execute: \n  conversion
> error from string "2007-11-01"')
>
> What is wrong here?
>
> Thanks,
>
>     Laszlo

Kinterbasdb probably expects the format looking like

month/day/year

rather than

year-month-day

I have an old pythoncard app where there was the same issue
when picking a date using the wx.calendar widget,
Rearranging the format solved the problem.

here is the relevant code snippet ,maybe it gives you the idea:

def on_doCalDate_command(self,event):
	                # this the way to get a wx.calendar date into a
                        #  format suitable for kinterbasdb

			D=[]
			MYDATE=str(self.components.Calendar1.date)
		        SPLITDATE=MYDATE.split('-')
			for data in SPLITDATE:
				D.append(data)
			YR=D[0]
			MO=D[1]
			DY=D[2]
			JOBDATE=MO+"/"+DY+"/"+YR

DB

From fredrik at pythonware.com  Thu Dec 27 10:21:48 2007
From: fredrik at pythonware.com (Fredrik Lundh)
Date: Thu, 27 Dec 2007 16:21:48 +0100
Subject: Bug in htmlentitydefs.py with Python 3.0?
In-Reply-To: <4773B1AA.8060902@v.loewis.de>
References: <803d10b9-01f0-4a1f-bc6a-6e12f17c308b@v32g2000hsa.googlegroups.com>	<4772e404$0$15853$9b622d9e@news.freenet.de>	
	<4773B1AA.8060902@v.loewis.de>
Message-ID: 

Martin v. L?wis wrote:

>>     entity_map = htmlentitydefs.entitydefs.copy()
>>     for name, entity in entity_map.items():
>>         if len(entity) != 1:
>>             entity_map[name] = unichr(int(entity[2:-1]))
>>
>> (entitydefs is pretty unusable as it is, but it was added to Python
>> before Python got Unicode strings, and changing it would break ancient
>> code...)
> 
> I would not write it this way, but as
> 
> for name,codepoint in htmlentitydefs.name2codepoint:
>   entity_map[name] = unichr(codepoint)

has dictionary iteration changed in 3.0?  if not, your code doesn't 
quite work.  and even if you fix that, it doesn't work for all Python 
versions that ET works for...

From gagsl-py2 at yahoo.com.ar  Mon Dec  3 19:02:27 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Mon, 03 Dec 2007 21:02:27 -0300
Subject: Delete a instance passed by reference into a method
References: <855405.74475.qm@web90502.mail.mud.yahoo.com>
Message-ID: 

En Mon, 03 Dec 2007 19:53:20 -0300, sccs cscs  escribi?:

> I am very surprising by the Python interpreter behavior : see code
> I initialize a 'A' and a 'B', and i give a B instance reference to the   
> instance A in 'm1' method. I can modify (IN/OUT mode)  the 'i'  
> attribute  (  aB.i = 10 ) , BUT I CANNOT DELETE "aB" into the fonction  
> m1 ! the code "     del aB " or " aB= None" has no effect. 'aB' still  
> exists when m1() is finsihed! WHY ? How can i do that?

First, read this 

> class A(object):
>        def __init__(self):
>         pass
>     def m1 (self, aB ):
>         aB.i = 10
>         del aB
>         print "no more B"
> class B(object):
>     def __init__(self,i):
>         self.i = i
>     def __del__(self):
>         print "delete B"
>
> aA = A ()
> aB = B ( i = 6)
>
> unA.m1 (aB )
> print str( aB .i )  #--->  Display 10, aB is not destroy !

The "del" statement does NOT delete the object, it only removes the name  
 from the current namespace (and doing so, it decrements the object's  
reference count by one). If that was the last reference to the object, it  
becomes a candidate for being garbage collected later.

__del__ is not used too much. If you want to ensure resource deallocation,  
use either a try/finally block or a with statement:

f = open('filename'):
try
    for line in f:
      do_something_with(line)
finally
    f.close()

Another alternative, Python 2.5 and up:

 from __future__ import with_statement

with open('filename') as f:
    for line in f:
      do_something_with(line)
# there is an implicit f.close() here

If you want to use __del__ for another purpose, please describe your use  
case (what you want to achieve, not how you think you should implement it).

-- 
Gabriel Genellina

From python at rcn.com  Sat Dec 29 15:12:30 2007
From: python at rcn.com (Raymond Hettinger)
Date: Sat, 29 Dec 2007 12:12:30 -0800 (PST)
Subject: getting n items at a time from a generator
References: 
	<5657aa68-cbc4-4285-86e8-91ddd317260d@q77g2000hsh.googlegroups.com> 
	<05e5f3ef-9930-4ad5-af88-2f08594568aa@j20g2000hsi.googlegroups.com> 

Message-ID: <02406011-8f48-4a70-aa1b-5e9bd0ffb075@e23g2000prf.googlegroups.com>

> > Also consider this solution from O'Reilly's Python Cookbook (2nd Ed.) p705
>
> > ? ? def chop(iterable, length=2):
> > ? ? ? ? return izip(*(iter(iterable),) * length)
>
> However, chop ignores the remainder of the data in the example.

There is a recipe in the itertools docs which handles the odd-length
data at the end:

def grouper(n, iterable, padvalue=None):
    "grouper(3, 'abcdefg', 'x') --> ('a','b','c'), ('d','e','f'),
('g','x','x')"
    return izip(*[chain(iterable, repeat(padvalue, n-1))]*n)

Raymond

From mark.english at rbccm.com  Tue Dec  4 05:36:30 2007
From: mark.english at rbccm.com (MarkE)
Date: Tue, 4 Dec 2007 02:36:30 -0800 (PST)
Subject: "Python" is not a good name, should rename to "Athon"
References: 
	<47546949$0$31456$426a74cc@news.free.fr>

Message-ID: <18d696f0-130e-4b8e-8b8c-dce5af401e44@x69g2000hsx.googlegroups.com>

Ithon

From jstroud at mbi.ucla.edu  Thu Dec 20 17:29:35 2007
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Thu, 20 Dec 2007 14:29:35 -0800
Subject: Why does __builtins__ mean different things...
Message-ID: 

Hello all,

Say I have the following module

# amodule.py
print __builtins__
# end of module

Then I have the following little helper script:

# helper.py
import amodule
# end of helper script

Now, I do this at the command line:

python amodule.py

And I get the following output:

Which is good.

Now, I do this:

python helper.py

and I get the following output:

{'IndexError': , 'all;:
... [etc]

I.e.: __builtins__ is a dict when referenced in an imported module, but 
in *the exact same code*, when executed as a script, it becomes a 
module! Is this a bug?

In other words, what is the good of this? For the purposes of argument, 
the bad of this is the behavior above. I'm guessing its a bug.

James

From stargaming at gmail.com  Mon Dec 10 14:11:00 2007
From: stargaming at gmail.com (Stargaming)
Date: 10 Dec 2007 19:11:00 GMT
Subject: Job Offer: Python Ninja or Pirate!
References: 

Message-ID: <475d8f43$0$31216$9b622d9e@news.freenet.de>

On Mon, 10 Dec 2007 16:10:16 +0200, Nikos Vergas wrote:

[snip]
>> Problem: In the dynamic language of your choice, write a short program
>> that will:
>>  1. define a list of the following user ids 42346, 77290, 729 (you can
>> hardcode these, but it should
>> still work with more or less ids)
>>  2. retrieve an xml document related to each user at this url "http://
>> api.etsy.com/feeds/xml_user_details.php?id="
>>  3. retrieve the data contained in the city element from each xml
>> document
>>  4. keep a running total of how many users are found in each city 5.
>>  display the total count of users living in each city
[snip]
> 
> i wanted to make it a one liner, but i had to import modules :(
> 
> import sys, xml, urllib
> 
> dummy = [sys.stdout.write(city + ': ' + str(num) + '\n') for city, num
> in set([[(a, o.count(a)) for a in p] for o, p in [2*tuple([[city for
> city in
> ((xml.dom.minidom.parseString(urllib.urlopen('http://api.etsy.com/feeds/
xml_user_details.php?id='
> + str(id)).read()).getElementsByTagName('city')[0].childNodes + [(lambda
> t: (setattr(t, 'data', 'no city'),
> t))(xml.dom.minidom.Text())[1]])[0].data.lower().replace('  ', ' ') for
> id in [71234, 71234, 71234, 71234, 71234, 71234, 42792])]])]][0])]

I suggest `__import__` in such cases. 

Even though I do not qualify for the job, I came up with this () 
code (modified list values for demonstration, mixed together from 
previous post and original task):

print '\n'.join('%s: %d'%(x,len(list(y))) for x,y in __import__
('itertools').groupby(sorted(__import__('xml').dom.minidom.parse
(__import__('urllib').urlopen('http://api.etsy.com/feeds/
xml_user_details.php?id=%d'%i)).getElementsByTagName('city')
[0].lastChild.data.title() for i in (71234, 729, 42346, 77290, 729, 
729))))

I still find this rather readable, though, and there is no bad side-
effect magic! :-)

Output should be:

| Chicago: 3
| Fort Lauderdale: 1
| Jersey City And South Florida: 1
| New York: 1

Cheers,

From a24061 at ducksburg.com  Tue Dec 11 15:04:23 2007
From: a24061 at ducksburg.com (Adam Funk)
Date: Tue, 11 Dec 2007 20:04:23 +0000
Subject: Is a "real" C-Python possible?
References: 

Message-ID: <737335-d7j.ln1@news.ducksburg.com>

On 2007-12-10, sturlamolden wrote:

> We have seen several examples that 'dynamic' and 'interpreted'
> languages can be quite efficient: There is an implementation of Common
> Lisp - CMUCL - that can compete with Fortran in efficiency for
> numerical computing. There are also versions of Lisp than can compete
> with the latest versions of JIT-compiled Java, e.g. SBCL and Allegro.
> As it happens, SBCL and CMUCL is mostly implemented in Lisp. The issue
> of speed for a language like Python has a lot to do with the quality
> of the implementation. What really makes CMUCL shine is the compiler
> that emits efficient native code on the fly. If it is possible to make
> a very fast Lisp, it should be possible to make a very fast Python as
> well. I remember people complaining 10 years ago that 'Lisp is so
> slow'. A huge effort has been put into making Lisp efficient enough
> for AI. I hope Python some day will gain a little from that effort as
> well.

I've been told that Torbj?rn Lager's implementation of the Brill
tagger in Prolog is remarkably fast, but that it uses some
counter-intuitive arrangements of the predicate and argument
structures in order to take advantage of the way Prolog databases are
indexed.

From gherron at islandtraining.com  Fri Dec 14 10:48:30 2007
From: gherron at islandtraining.com (Gary Herron)
Date: Fri, 14 Dec 2007 07:48:30 -0800
Subject: simple string formatting question
In-Reply-To: 
References: 
Message-ID: <4762A5CE.7080709@islandtraining.com>

Neal Becker wrote:
> I have a list of strings (sys.argv actually).  I want to print them as a
> space-delimited string (actually, the same way they went into the command
> line, so I can cut and paste)
>
> So if I run my program like:
> ./my_prog a b c d
>
> I want it to print:
>
> './my_prog' 'a' 'b' 'c' 'd'
>
> Just print sys.argv will almost work, but it's comma-delimited.
>
> There must be some clever way to do this.  Any ideas?
>
>   

Use repr to get the quotes around each output arg, and use join on a
space to the the space delimited string.

>>> theList = ['./whatever', 'a', 'b', 'c']
>>> print ' '.join([repr(i) for i in theList])
'./whatever' 'a' 'b' 'c'

Gary Herron

From scardig at gmail.com  Mon Dec 10 03:20:12 2007
From: scardig at gmail.com (scardig at gmail.com)
Date: Mon, 10 Dec 2007 00:20:12 -0800 (PST)
Subject: My very first python web app (no framework)
References: 
Message-ID: <8dc8e1c6-7847-419d-b7ea-0e49994506ae@d21g2000prf.googlegroups.com>

On 9 Dic, 15:43, scar... at gmail.com wrote:
> This is my first Python web pseudo-app: "you give me some data, I give
> you func(data)". I'm on a shared host with mod_fastcgi so I installed
> a virtual python environment + flup (no middleware now, just wsgi
> server).
>
> ========= dispatch.fcgi =================
> from fcgi import WSGIServer
> import sys, cgi, cgitb,os
> import myfunctions
>
> def myapp(environ, start_response):
>         start_response('200 OK', [('Content-Type', 'text/html')])
>         write = []
>         write.append (myfunctions.func1(par1,par2))
>         write.append (myfunctions.func2(par1,par2))
>         # [...]
>         write.append (myfunctions.funcn(par1,par2))
>         return [write]
>
> if __name__=="__main__":
>         WSGIServer(myapp).run()
> ====================================
>
> ====== myfunctions.py ==================
> def func1(a,b):
>     return a
> def func2(a,b):
>     return b
> ====================================
>
> Is it the right way to go? Is it safe in a web production
> environment ? Is it thread-friendly (since flup is threaded) ?
>
> tnx

Any hint ?

From lists at cheimes.de  Sun Dec  9 09:21:15 2007
From: lists at cheimes.de (Christian Heimes)
Date: Sun, 09 Dec 2007 15:21:15 +0100
Subject: python from any command line?
In-Reply-To: 
References: 
Message-ID: <475BF9DB.8030205@cheimes.de>

waltbrad wrote:
> Is there a way to set this so I can also invoke it from any command
> line prompt?

You can follow Adonis' advice but I'm going a different path on my
computer because I've multiple versions of Python installed on my box.

I usually put a simple batch file in c:\Windows, e.g. python25.bat

@C:\Python25\python.exe %*

I can start Python 2.5 with python25 from every directory.

Christian

From emin.shopper at gmail.com  Thu Dec 27 08:52:23 2007
From: emin.shopper at gmail.com (Emin.shopper Martinian.shopper)
Date: Thu, 27 Dec 2007 08:52:23 -0500
Subject: parallel processing in standard library
Message-ID: <32e43bb70712270552n76d460e8y9d1d2acaa73f829e@mail.gmail.com>

Dear Experts,

Is there any hope of a parallel processing toolkit being incorporated into
the python standard library? I've seen a wide variety of toolkits each with
various features and limitations. Unfortunately, each has its own API. For
coarse-grained parallelism, I suspect I'd be pretty happy with many of the
existing toolkits, but if I'm going to pick one API to learn and program to,
I'd rather pick one that I'm confident is going to be supported for a while.

So is there any hope of adoption of a parallel processing system into the
python standard library? If not, is there any hope of something like the
db-api for coarse grained parallelism (i.e, a common API that different
toolkits can support)?

Thanks,
-Emin
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From http  Sat Dec  1 21:46:59 2007
From: http (Paul Rubin)
Date: 01 Dec 2007 18:46:59 -0800
Subject: [OT] minimalist web server
References: 
Message-ID: <7xy7cdke3g.fsf@ruckus.brouhaha.com>

"Daniel Fetchinson"  writes:
> I'm looking for the most minimalist web server ever that does nothing
> else than return a fixed static page for every request. Regardless of
> what the request is, it just needs to be an HTTP request to port 80,
> the web server should return always the same html document. What would
> be the best choice for this? The goal is of course to minimize system
> resources in terms of memory, cpu, etc, etc.

If you're running linux, maybe you want tux.

publicfile isn't exactly what you describe, but its description might
be of some interest:

http://cr.yp.to/publicfile.html

From eric.promislow at gmail.com  Wed Dec 12 20:34:02 2007
From: eric.promislow at gmail.com (Eric Promislow)
Date: Wed, 12 Dec 2007 17:34:02 -0800 (PST)
Subject: Vista + Rails 2.0 upgrade => subprocess hangs
Message-ID: <13f1941e-7a7d-4be4-92cf-fcec53874b73@d4g2000prg.googlegroups.com>

Here's a small Python program I use to grab the output from rake:

=====

from subprocess import Popen, PIPE

p = Popen(args='c:\\ruby\\bin\\ruby.exe c:\\ruby\\bin\\rake -T',
          cwd=u'c:\\Users\\ericp\\testing\\file07',
          shell=True,
          stdin=None,
          stderr=PIPE,
          stdout=PIPE,
          creationflags=0x8000000
          );
p.wait()
data = p.stdout.read()
print data

=====

This is on Windows Vista.  With Rails 1.2.6 there was no problem.
After
upgrading to Rails 2.0.1, the program now hangs at the call to the
wait()
command.  If I manually kill the ruby.exe process, I get some of the
expected
output, but not all of it.

I can run the above command from the command-line with no problem.

The rake code that Ruby loads did change moving from 1.2.6 to 2.0.1,
but
subprocess should run the command to completion.

I'm not sure what happens yet on XP, or other platforms.  I'd like to
get this
working on Vista, though.  Any ideas.

Thanks,
Eric

From arcphi at gmail.com  Sat Dec 22 17:39:15 2007
From: arcphi at gmail.com (Jervis Liang)
Date: Sat, 22 Dec 2007 14:39:15 -0800 (PST)
Subject: 5 queens
References: <9639f80c-5722-40c6-bd7b-b727d0a7804e@n20g2000hsh.googlegroups.com>
Message-ID: 

On Dec 22, 2:36 pm, cf29  wrote:

> The goal is to control all the chess board with five queens that do
> not attack each other. I found "manually" many solutions to this
> problem (184 until now)

How did you find 184 solutions? Wolfram says there are 91 distinct
solutions for 5-queens on an 8x8 board with no two queens attacking
each other.

http://mathworld.wolfram.com/QueensProblem.html

From ilias at lazaridis.com  Mon Dec 17 22:52:07 2007
From: ilias at lazaridis.com (Ilias Lazaridis)
Date: Mon, 17 Dec 2007 19:52:07 -0800 (PST)
Subject: WikiInclude on 0.11 - Noah Kantrowitz blocks bug-fix
References: <804f9639-6715-47d6-927d-797bfda0a9b8@s8g2000prg.googlegroups.com>
Message-ID: <78f21c31-0f30-42f8-bd9a-637ca8e2f0eb@i72g2000hsd.googlegroups.com>

On Dec 18, 4:23 am, Ilias Lazaridis  wrote:
> Essence:
>
>  * Deletion of valid defect reports on trac community resources

UPDATE:

Instead of fixing the "WikiInclude" in the repo (or at least leave the
ticket open, thus a developer can do it), Mr. Noah Kantrowitz goes his
very special way (hint: his nick "coderanger") to suggest to use the
"IncludeMacro":

"This plugin uses the older style trac_plugin.txt file. If you need
something more 0.11 compatible, try the IncludeMacro."
http://trac-hacks.org/ticket/2294#comment:1

This is of course completely nonsense. I don't want to use the complex
and buggy "IncludeMacro". The "WikiInclude" can be corrected with just
one line.

But ok, let's take a at Mr. Noah Kantrowitz creation, the
"IncludeMacro". Does it work with 0.11? He does not know, thus he
asks:

"What about the current version doesn't work in 0.11?"
http://trac-hacks.org/ticket/2310#comment:3

who received this question? A user, which has provided a 0.11
implementation of the plugin:

"
*  summary changed from [patch] 0.11 patch to 0.11 version of
IncludeMacro.

Well, there's certainly no need to get snippy over semantics ;)

There wasn't a version of IncludeMacro for 0.11, so I created one in
the hopes that other Trac admins might find it useful -- humblest
apologies for erroneously referring to my submission as a "patch".
Having said that, if you feel so inclined as to review my version,
then that would be superb, as I'm sure potential future users would
feel much better if my contribution had your blessing and/or fixes.
"
http://trac-hacks.org/ticket/2310#comment:2

Other tickets remain completely unprocessed, although they give an
answer to his question "does it work on 0.11":

"The macros.py of Includewikimacro contain : macro = WikiProcessor?
(self.env, 'Include') for the rendering of the wiki page. Whereas now
with the version 0.11, the function WikiProcessor?() nead a formatter
as first argument and not anymore an environment."
08/27/07 05:13:21 changed by sibok at tis***.fr
http://trac-hacks.org/ticket/1973

Mr. Noah Kantrowitz does not care about the trac users, otherwise he
would update the svn of the WikiInclude macro and the documentation to
inform users, instead of violently closing a valid ticket as an
invalid one.

A few more wild-west CODERANGERS like Noah Kantrowitz can ruine the
already very slow progress of the trac-project completely.

User comments and user feedback is critical for any open-source
project. Engouraging contributions, instead of surpressing them is
essential.

Trac-Users, please do not accept such a surpressive behaviour - it
costs your time.

(btw: I am a 0.11dev user, see http://dev.lazaridis.com/base/wiki)

.

> The "WikiInclude" plugin is not recognised on trac 0.11, thus I took a
> look an made a small addition to the setup.py (the entry_point).
>
> Other users have the same problem, thus I filed a ticket in the "trac-
> hacks" community resource.
>
> Mr. Noah Kantrowitz closed the ticket as "invalid". My comments within
> this ticket are deleted, directly in the database, which is the same
> as censorship. I've copied the email-notification from my comment
> below. [1]
>
> Please realize:
>
>  * this is a real-live defect, which remains unprocessed, thus more
> users run into this trouble.
>  * My attemps to inform users in the user-threads do not show up in
> all threads (moderation on trac-users!!!)
>  * The "IncludeMacro" is not compatible to the "WikiInclude" macro
>  * My comments were deleted in a non-trackable way
>  * Users of the WikiInclude plugin are not informed in any way
>
> You are may wondering why the trac project fails to produce a stable
> 1.0 version since years. The answer is here:
>
> http://case.lazaridis.com/wiki/TracAudit
>
> -
>
> [1]
>
> #2294: Plugin is not detectd on trac 0.11 (even the 0.11 specific one)
> --------------------------------
> +-------------------------------------------
> Reporter:  il... at lazaridis.com  |        Owner:  yu-ji
>    Type:  defect               |       Status:  reopened
> Priority:  normal               |    Component:  WikiIncludePlugin
> Severity:  critical             |   Resolution:
> Keywords:                       |      Release:  0.11
> --------------------------------
> +-------------------------------------------
> Changes (by il... at lazaridis.com):
>
>  * status:  closed => reopened
>  * resolution:  invalid =>
>  * summary:  Missing "entry_point" within setup.py => Plugin is not
>              detectd on trac 0.11 (even the 0.11 specific
>              one)
>
> Comment:
>
>  (Mr. Kantrowitz. This is defenitely a defect, which occoured for
> several
>  users. The provided information helps any user which hits on this
> ticket
>  via a search. I ask you once more to stop with the deletions on this
>  '''community''' resource).
>
>  The resolution "invalid" is incorrect.
>
>  The problem exists for me '''and other''' users, see e.g.:
>
>  * [http://groups.google.com/group/trac-users/browse_frm/thread/
> de454e7dcf9f0438/d9806ad4a31a14a7 thread 1]
>  * [http://groups.google.com/group/trac-users/browse_frm/thread/
> 2ccf4b2855a6f242?q=WikiInclude& thread 2]
>
>  I've solved it whilst simply adding the entry point to the setup.py.
>
>  It is ok to point to the more flexible and maintained "IncludeMacro",
> but
>  other people possibly just want to continue to use the simpler
>  "WikiInclude" one.
>
>  I suggest the maintainer of "WikiInclude" (or another developer)
> corrects
>  the setup.py in the repo, and additionally one should place a note in
> the
>  "WikiInclude" documentation, that there's a more flexible
> "IncludeMacro"
>  available.

From ironfroggy at socialserve.com  Tue Dec 11 21:03:36 2007
From: ironfroggy at socialserve.com (Calvin Spealman)
Date: Tue, 11 Dec 2007 21:03:36 -0500
Subject: replacing built-in exception types
In-Reply-To: <475EF868.5090806@pdi.dreamworks.com>
References: <475EF868.5090806@pdi.dreamworks.com>
Message-ID: <140AE310-26CD-4340-ADC7-994A48B495FF@socialserve.com>

Why would you do this? How to do it, if its even possible, is far  
less important than if you should even attempt it in the first place.

On Dec 11, 2007, at 3:51 PM, Nishkar Grover wrote:

>
> I'm trying to replace a built-in exception type and here's a  
> simplified
> example of what I was hoping to do...
>
>>>>
>>>> import exceptions, __builtin__
>>>>
>>>> zeroDivisionError = exceptions.ZeroDivisionError
>>>>
>>>> class Foo(zeroDivisionError):
> ...     bar = 'bar'
> ...
>>>>
>>>> exceptions.ZeroDivisionError = Foo
>>>> ZeroDivisionError = Foo
>>>> __builtin__.ZeroDivisionError = Foo
>>>>
>>>> try:
> ...     raise ZeroDivisionError
> ... except ZeroDivisionError, e:
> ...     print e.bar
> ...
> bar
>>>>
>>>> try:
> ...     1/0
> ... except ZeroDivisionError, e:
> ...     print e.bar
> ...
> Traceback (most recent call last):
>    File "", line 2, in ?
> ZeroDivisionError: integer division or modulo by zero
>>>>
>
> Notice that I get my customized exception type when I explicitly raise
> ZeroDivisionError but not when that is implicitly raised by 1/0. It
> seems like I have to replace that exception type at some lower level,
> but I'm not sure how/where. Does anyone know of a way to do this?
>
> - Nishkar
>
> -- 
> http://mail.python.org/mailman/listinfo/python-list

From rodmena.com at gmail.com  Mon Dec 10 02:15:17 2007
From: rodmena.com at gmail.com (farsheed)
Date: Sun, 9 Dec 2007 23:15:17 -0800 (PST)
Subject: Best way to protect my new commercial software.
Message-ID: <8c9a903b-7f57-4a90-883a-5bb1f06fedf6@e6g2000prf.googlegroups.com>

I wrote a software and I want to protect it so can not be cracked
easily. I wrote it in python and compile it using py2exe. what is the
best way in your opinion?

From steve at REMOVE-THIS-cybersource.com.au  Fri Dec  7 16:41:54 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Fri, 07 Dec 2007 21:41:54 -0000
Subject: Dictionary instantiation?
References: <06ba5d69-0623-4133-a8cd-89c2b48efbf5@v4g2000hsf.googlegroups.com>

	<475926c8$0$23994$426a34cc@news.free.fr>
Message-ID: <13ljfh2hgatj5ab@corp.supernews.com>

On Fri, 07 Dec 2007 11:56:14 +0100, Bruno Desthuilliers wrote:

> Also, modifying a sequence in place while iterating over it is a *very*
> bad idea.

That's somewhat of an exaggeration, surely. Some sorts of modifications 
are more error-prone than others, and deserves your warning e.g. 
inserting or deleting items (as the OP was doing). But modifying the 
items themselves isn't risky at all. E.g. instead of this:

L = []
for x in xrange(1000000):
    L.append(result_of_some_calculation(x))

a perfectly reasonable optimization technique for large lists is:

L = [None]*1000000
for i,x in enumerate(L):
    L[i] = result_of_some_calculation(x)

The second avoids needing to re-size the list repeatedly, which is quite 
slow.

-- 
Steven

From ptmcg at austin.rr.com  Tue Dec 11 09:23:43 2007
From: ptmcg at austin.rr.com (Paul McGuire)
Date: Tue, 11 Dec 2007 06:23:43 -0800 (PST)
Subject: Counter-spam: Change the subject
References: 
Message-ID: <1b648cf1-ee24-4132-9c15-b293d12907cf@i29g2000prf.googlegroups.com>

On Dec 11, 5:59 am, dfg  wrote:
> Breakthrough - How To Turn Your Dull Website into Money Making Website

I was surprised at how effectively the spam posting the other day,
"Jesus in the Quran" was masked and defused by a reply titled "J in
the Q".  It seems this might be a simple tool for cleaning up some of
the spam posting clutter, just by "changing the subject" (double
entendre not intentional, it just happened).  Instead of these
breathless, shouting subjects full of '#' signs and capital letters,
we just acronymify them to "H T T Y D W into M M W" by posting a reply
and editing the subject.

Could this work?  It seems too simple.

-- Paul

From gardner at networknow.org  Thu Dec 20 18:28:56 2007
From: gardner at networknow.org (Gardner Pomper)
Date: Thu, 20 Dec 2007 18:28:56 -0500
Subject: How to spider through a secure site?
Message-ID: <42d22dbf0712201528u5048bbbu9046a88ea300e6f1@mail.gmail.com>

Hi,

My daughter's school just put up an "Infinite Campus" website, which
requires a login and does everything through https. I can find examples of
how to spider a regular web site with python, but I can't figure out how to
deal with the ssl certificate and how to supply name and password. I have
tried google, but I must not know the right terms.

There is a book, called Spidering Hacks, that seems to imply that perl's LWP
module will allow it, but i don't know enough about perl to determine if
there is a python equivalent.

Thanks for any tips,

- Gardner
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From timr at probo.com  Sat Dec 15 03:10:42 2007
From: timr at probo.com (Tim Roberts)
Date: Sat, 15 Dec 2007 08:10:42 GMT
Subject: Changing argument value
References: <927621cd-0640-477d-9400-c0f863c1bca3@e6g2000prf.googlegroups.com>
	<4761a9c4$0$28240$426a74cc@news.free.fr>
	<47629c70$0$4006$9b622d9e@news.freenet.de>
Message-ID: 

Stargaming  wrote:
>
>Even though you have the assignment operator *in both cases*, it does 
>**not** issue the same thing. 
>
>As Bruno pointed out, in the first case ``y = [3,4]`` it is *rebinding* 
>the name `y`.

There have been two good replies to this, but I would like to present the
"mental model" I use to understand this.  The term "rebinding" is not one
that folks encounter very often, and so doesn't bring up an image.

In Python, you have objects (which do not have names), and you have names.
Names get "bound" to objects.  For example:

  x = [1,2,3]

This statement creates an anonymous object out in space.  The object is a
list, containing three numbers.  It also creates a name "x" in a namespace,
and binds it to that anonymous list.

Now, let's say I do this:

  x = [1,2,6]

This creates a NEW anonymous object out in space -- a list containing three
numbers -- and binds the name "x" to it.  For a short time, we now have TWO
three-element lists in our object space.  The old list ([1,2,3]) now has
nothing bound to it, so it will eventually be cleaned up by the garbage
collector.  x is now bound to an entirely different object.

But, if I did this INSTEAD of that:

  x[2] = 6

This does NOT create a new list.  Instead, it changes one element in that
first anonymous list object we created.  x is still bound to that same
list.

So, consider your example:

    def fooA(y):
	y = [3,4]
	return y

    def fooB(y):
	y[0] = 3
	y[1] = 4
	return y

   x = [1,2]
   fooA(x)

"x" is just a name in the global namespace.  We don't really pass "x" to
the function.  Instead, we pass that anonymous list object with
two-elements.  As the function is called, that list gets bound to the name
"y" inside fooA.  This list now has TWO names bound to it, "x" in the
global namespace, and "y" in the fooA function.

When you execute 
    y = [3,4]
you are creating a brand-new list with two elements, and bunding that to
the local name "y".  The old list STILL EXISTS, and since it is still bound
to the global "x", it won't be cleaned up.  When the function returns, the
name "y" goes away, so it gets unbound.  Since you don't store the function
result anywhere, the [3,4] list now has no names bound to it, and will get
cleaned up.

    fooB(x)

Like before, this is passing the two-element [1,2] list into fooB, where it
gets bound to "y" inside fooB.  Again, it has two names bound to it.  Then,
when you do
    y[0] = 3
you are changing an element in that list.  Since that same list is bound to
both the global "x" and the local "y", the effect of the changes WILL be
seen when you exit from function.
-- 
Tim Roberts, timr at probo.com
Providenza & Boekelheide, Inc.

From martin at v.loewis.de  Sat Dec  8 10:25:44 2007
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Sat, 08 Dec 2007 16:25:44 +0100
Subject: distutils & OS X universal binaries
In-Reply-To: 
References: <475AA774.7020904@jessikat.plus.net>

Message-ID: <475AB778.8050801@v.loewis.de>

>> A user reports problems with one of our extensions when running the 
>> intel compiled extension on ppc and vice versa. He is building the 
>> extension as a universal binary. Although the intel compiled version 
>> runs fine it displays a known bug when run on a ppc.
> 
> Have you reported the problem at http://bugs.python.org/? A minimal
> example could help us to fix the problem.

At first, I also thought that Robin suggested that there is a problem
with Python. Upon re-reading, I now believe he rather sees the bug
in the reportlabs code, and is asking for an approach to solve it there.

Regards,
Martin

From sturlamolden at yahoo.no  Tue Dec 11 17:16:59 2007
From: sturlamolden at yahoo.no (sturlamolden)
Date: Tue, 11 Dec 2007 14:16:59 -0800 (PST)
Subject: Is a "real" C-Python possible?
References:  

	<475EE42C.5060308@animats.com>
Message-ID: <6c73d2e1-1afb-469b-9132-671e03ffe741@f3g2000hsg.googlegroups.com>

On 11 Des, 20:25, John Nagle  wrote:

> Shed Skin effort. Its author writes "Am I the only one seeing the potential
> of an implicitly statically typed Python-like-language that runs at
> practically the same speed as C++?"

Don't forget about Pyrex and PyPy's RPython.

By the way, we don't need a hotspot JIT compiler. Lisp has a compiler
invoked by the programmer. We could include optional static typing in
Python, and have an optional static optimizing native compiler for
selected portions of code. That would be easier to implement in the
short run, with  JIT-capabilities added later. Pyrex, ShedSkin or
RPython are all good starting points.

From rpmuller at gmail.com  Sun Dec  9 09:20:58 2007
From: rpmuller at gmail.com (Rick Muller)
Date: Sun, 9 Dec 2007 06:20:58 -0800 (PST)
Subject: Advice for editing xml file using ElementTree and wxPython
References: <7e0d9dbf-6de1-4c46-a8e9-0ade7531b0aa@e25g2000prg.googlegroups.com>
	<5fef1874-9589-4aed-8986-a5e3ba6eb04d@b40g2000prf.googlegroups.com>
Message-ID: <9fad8c68-257b-4e41-8d00-c2dddcbd58c1@b40g2000prf.googlegroups.com>

On Dec 8, 11:57 pm, Waldemar Osuch  wrote:
> On Dec 8, 8:35 pm, Rick Muller  wrote:
>
>
>
> > I'm a computational chemist who frequently dabbles in Python. A
> > collaborator sent me a huge XML file that at one point was evidently
> > modified by a now defunct java application. A sample of this file
> > looks something like:
>
> > 
> >     Test
> >     
> >         File Name
> >         fileName
> >         Name of the input file
> >         water
> >     
> >     
> >         Number of Atoms
> >         natoms
> >         Number of atoms in the molecule
> >         3
> >     
> > 
>
> 
>
>
>
> > Seems like this is something that's probably pretty common, modifying
> > a data structure using a gui, so I'm hoping that someone has thought
> > about this and has some good advice about best practices here.
>
> The trick is to keep a reference to the actual ElementTree objects
> as you build your TreeCtrl.  Ability to store arbitrary Python object
> in the TreeCtrl Item makes it easy.  In an event handler modify the
> original element and you are done.  Do not forget to save when
> closing.
>
> If the XML file is very large you may have performance issues since
> the whole parsed tree is kept in memory.  Luckily the ElementTree
> representation is lean.
>
> A sample below shows the approach.  It is very basic but I hope it
> conveys the idea.  Please note that edits to the actual tags are
> ignored.
>
> -------------------------------------------------------------------
> import wx
> import xml.etree.cElementTree as ET
>
> class MainFrame(wx.Frame):
>     def __init__(self, fpath):
>         wx.Frame.__init__(self, None)
>         self.fpath = fpath
>         self.xml = ET.parse(fpath)
>         self.tree = wx.TreeCtrl(self,
>             style=wx.TR_HAS_BUTTONS|wx.TR_EDIT_LABELS)
>         root = self.fillmeup()
>         self.tree.Expand(root)
>
>         self.Bind(wx.EVT_CLOSE, self.OnClose)
>         self.Bind(wx.EVT_TREE_END_LABEL_EDIT, self.OnEdit)
>
>     def fillmeup(self):
>         xml = self.xml.getroot()
>         tree = self.tree
>         root = tree.AddRoot(xml.tag)
>         def add(parent, elem):
>             for e in elem:
>                 item = tree.AppendItem(parent, e.tag, data=None)
>                 text = e.text.strip()
>                 if text:
>                     val = tree.AppendItem(item, text)
>                     tree.SetPyData(val, e)
>                 add(item, e)
>         add(root, xml)
>         return root
>
>     def OnEdit(self, evt):
>         elm = self.tree.GetPyData(evt.Item)
>         if elm is not None:
>             elm.text = evt.Label
>
>     def OnClose(self, evt):
>         self.xml.write(self.fpath)
>         self.Destroy()
>
> if __name__=='__main__':
>     app = wx.App(False)
>     frame = MainFrame('sample.xml')
>     frame.Show()
>     app.MainLoop()

This was exactly what I was looking for! Thanks very much.

Rick

From L33tminion at gmail.com  Wed Dec 19 11:46:44 2007
From: L33tminion at gmail.com (Sam)
Date: Wed, 19 Dec 2007 08:46:44 -0800 (PST)
Subject: Allowing Arbitrary Indentation in Python
References: <5169ce7e-a092-47fc-b121-cd86e4916aa5@p69g2000hsa.googlegroups.com>
	<003ad67e-7ac4-4558-9a70-497c704b21cd@e4g2000hsg.googlegroups.com>
Message-ID: 

On Dec 19, 11:09 am, gDog  wrote:
> Hi, Sam-
>
> I'm not wanting to start a flame war, either, but may I ask why does
> your friend want to do that?  I'm always intrigued by the folks who
> object to the indentation rules in Python, even though I've always
> tried to keep consistent indentation in all the languages I've used
> (and I've been at this since the 1980's).  Even my Perl coding friends
> tend to insist on indents being aligned.  I'm just curious, that's
> all.
>
> Thanks,
> --greg

His comments on the subject are in the LiveJournal comment I linked to
in my original post.  I think it's mostly an idiosyncratic thing; he's
used to laying out GUI elements in a hierarchy using tabs (in some
language that allows arbitrary tabs) and now that he's experimenting
with the (new?) Python API for the same toolkit, he wishes he could
use the same coding style.

From dmitrey.kroshko at scipy.org  Tue Dec 18 02:38:34 2007
From: dmitrey.kroshko at scipy.org (dmitrey)
Date: Mon, 17 Dec 2007 23:38:34 -0800 (PST)
Subject: OpenOpt install
References: <65e61980-a21b-4ba2-81f2-a2c23ccb43f2@1g2000hsl.googlegroups.com> 

	<89ecef85-b670-40ab-bc8a-74271ff4cff0@y5g2000hsf.googlegroups.com>

Message-ID: 

When earlier OpenOpt versions had been installed there were no
compiled pyc-files (in destination directory). I called to mailing
list but no obvious receipt had been achieved. Matthieu had done some
changes but it yielded other mistakes (no some py-files detected or
kind of), so I had removed those changes and write my own, for to have
OO py-files being compiled when installed, because next time when they
will be run user may not have root permissions, so he will recompile
source files each time OO starts.

On Dec 17, 10:27 pm, Robert Kern  wrote:
> dmitrey wrote:
> > Use
> > python setup.py install
>
> People should be able to run the distutils commands independently.
>
> What are you trying to achieve with this block of code that follows the setup()
> call?
>
>     new_name = 'tmp55'
>     os.rename('scikits', new_name)
>     newPath = []
>     for directory in sys.path:
>         if not 'scikits' in directory: newPath.append(directory)# something
> wrong with list.remove()
>     sys.path = newPath
>     import scikits
>     reload(scikits)
>     Path = scikits.__path__[0]
>     NewPath = os.path.join(Path, 'openopt')
>     rmtree(NewPath, True) # True means ignore errors
>     copytree(os.path.join(os.path.curdir, new_name, 'openopt'), NewPath)
>     NewPath = Path
>     compileall.compile_dir(NewPath)
>
>     os.rename(new_name, 'scikits')
>
> This just looks like a really bad idea.
>
> --
> Robert Kern
>
> "I have come to believe that the whole world is an enigma, a harmless enigma
>  that is made terrible by our own mad attempt to interpret it as though it had
>  an underlying truth."
>   -- Umberto Eco

From lists at cheimes.de  Wed Dec 19 02:02:32 2007
From: lists at cheimes.de (Christian Heimes)
Date: Wed, 19 Dec 2007 08:02:32 +0100
Subject: More than one interpreter per process?
In-Reply-To: 
References: 

Message-ID: 

Roger Binns wrote:
> sturlamolden wrote:
>> If one can have more than one interpreter in a single process, 
> 
> You can.  Have a look at mod_python and mod_wsgi which does exactly
> this.  But extension modules that use the simplified GIL api don't work
> with them (well, if at all).

No, you can't. Sub-interpreters share a single GIL and other state. Why
don't you run multiple processes? It's on of the oldest and best working
ways use the full potential of your system. Lot's of Unix servers like
postfix, qmail, apache (with some workers) et al. use processes.

Christian

From MartinRinehart at gmail.com  Sat Dec  8 13:17:23 2007
From: MartinRinehart at gmail.com (MartinRinehart at gmail.com)
Date: Sat, 8 Dec 2007 10:17:23 -0800 (PST)
Subject: Newbie edit/compile/run cycle question
Message-ID: <1f995159-fc02-4cd1-aa99-7f8500eeaeec@b1g2000pra.googlegroups.com>

I'm a java guy used to the effective edit/run cycle you get with a
good IDE.

Today I'm writing my first Python, but can't seem to find the way to
use Python's inherent edit/run cycle.

I edit my source, import it into Python, run it. Fine. Then I edit
again, but the next import doesn't notice that a new compile is
needed. I'm making a little progress (very little) by exiting/
reentering Python after each edit. Ugh.

What don't I know that I should know to just edit/run, preferably at
the tap of a function key?

From devicerandom at gmail.com  Tue Dec 11 18:35:11 2007
From: devicerandom at gmail.com (massimo s.)
Date: Tue, 11 Dec 2007 15:35:11 -0800 (PST)
Subject: Is anyone happy with csv module?
References: <15ab759b-0aec-45dd-88b9-c446c2b7d299@e10g2000prf.googlegroups.com>
	<88102e1b-c54a-4216-a71e-017a0a243aeb@b40g2000prf.googlegroups.com> 
	<516581dc-a2d7-452a-8988-89c381e086e8@r29g2000hsg.googlegroups.com> 

Message-ID: 

On 12 Dic, 00:08, "Gabriel Genellina"  wrote:
> Note that all the above (as any operation involving a whole *column*)
> requires reading the whole file in memory. Working by rows, on the other
> hand, only requires holding ONE row at a time. For big files this is
> significant.
>
> An example of writing data given in columns:
>
>      id = [1,2,3,4]
>      name = ['Moe','Larry','Curly','Shemp']
>      hair = ['black','red',None,'black']
>      writer = csv.writer(...)
>      writer.writerows(itertools.izip(id, name, hair))
>
> I think your problem is not with the csv module, but lack of familiarity
> with the Python language itself and how to use it efficiently.

Maybe. As stated at the beginning, I am not a professional programmer.
I am a scientist using Python at work. It's years I use it and I love
it, but I surely miss many nuances.

For example, I never ever looked into itertools. I am also not so
familiar with iterators. Itertools seem fantastic, and I'll definitely
look into them, however I can't but feel it's a bit strange that
someone wanting a quick csv parsing/writing has to dig into those
apparently unrelated stuff.

> > (Btw: who is using csv to read >10**6 lines of data?)
>
> Me, and many others AFAIK. 1M lines is not so big, btw.

It's clear that I am thinking to completely different usages for CSV
than what most people in this thread. I use csv to export and import
numerical data columns to and from spreadsheets. That's why I found 1M
lines a lot. Didn't know csv had other uses, now I see more clearly
why the module is as it is.

Thanks for your tips, I've learned quite a lot.

m.

From hat at se-162.se.wtb.tue.nl  Mon Dec 10 05:56:54 2007
From: hat at se-162.se.wtb.tue.nl (A.T.Hofkamp)
Date: Mon, 10 Dec 2007 11:56:54 +0100
Subject: My very first python web app (no framework)
References: 
	<8dc8e1c6-7847-419d-b7ea-0e49994506ae@d21g2000prf.googlegroups.com>
Message-ID: 

On 2007-12-10, scardig at gmail.com  wrote:
> On 9 Dic, 15:43, scar... at gmail.com wrote:
>> Is it the right way to go? Is it safe in a web production
>> environment ? Is it thread-friendly (since flup is threaded) ?
>>
>> tnx
>
> Any hint ?

If you as author are asking, my bet is on "no" for safety.

Albert

From jwwest at gmail.com  Thu Dec 20 15:21:02 2007
From: jwwest at gmail.com (jwwest)
Date: Thu, 20 Dec 2007 12:21:02 -0800 (PST)
Subject: Regex Matching on Readline()
References: <624c98d6-383e-4e19-af96-c6b2a0efa950@r60g2000hsc.googlegroups.com>

Message-ID: <302d7567-1db7-4277-a45a-bd99ef4972fa@b1g2000pra.googlegroups.com>

On Dec 20, 2:13 pm, John Machin  wrote:
> On Dec 21, 6:50 am, jwwest  wrote:
>
>
>
> > Anyone have any trouble pattern matching on lines returned by
> > readline? Here's an example:
>
> > string = "Accounting - General"
> > pat = ".+\s-"
>
> > Should match on "Accounting -". However, if I read that string in from
> > a file it will not match. In fact, I can't get anything to match
> > except ".*".
>
> > I'm almost certain that it has something to do with the characters
> > that python returns from readline(). If I have this in a file:
>
> > Accounting - General
>
> > And do a:
>
> > line = f.readline()
> > print line
>
> > I get:
>
> > A c c o u n t i n g  -  G e n e r a l
>
> > Not sure why, I'm a nub at Python so any help is appreciated. They
> > look like spaces to me, but aren't (I've tried matching on spacs too)
>
> > - james
>
> To find out what the pseudo-spaces are, do this:
>
>     print repr(open("the_file", "rb").read()[:100])
>
> and show us (copy/paste) what you get.
>
> Also, tell us what platform you are running Python on, and how the
> file was created (by what software, on what platform).

Here's my output:
'A\x00c\x00c\x00o\x00u\x00n\x00t\x00i\x00n\x00g\x00 \x00-\x00 \x00G
\x00e\x00n\x00e\x00r\x00a\x00l\x00 \x00 \x00 \x00 \x00 \x00 \x00 \x00
\x00 \x00 \x00 \x00 \x00 \x00 \x00 \x00 \x00 \x00 \x00 \x00 \x00 \x00
\x00 \x00 \x00 \x00 \x00 \x00 \x00 \x00 \x00'

I'm running Python on Windows. The file was initially created as
output from SQL Management Studio. I've re-saved it using TextPad
which tells me it's Unicode and PC formatted.

From Mark.McGirr at gov.bc.ca  Thu Dec 20 11:22:17 2007
From: Mark.McGirr at gov.bc.ca (McGirr, Mark A ILMB:EX)
Date: Thu, 20 Dec 2007 08:22:17 -0800
Subject: POpen - Wait For Process To Complete
Message-ID: <440F5CA85C13D04DAD79C5274E75BC83A056BC@crowd.idir.bcgov>

Rob.  Did you ever figure this out.  It's driving me crazy too.

________________________________________________
	Mark McGirr
     Land Information Specialist
      Regional Client Services Division
      Integrated Land Management Bureau
      Ministry of Agriculture and Lands
	201 - 172 North Second Avenue
	Williams Lake, BC
	V2G 1T4

	phone 250-398-4719  fax 250-398-4836
      mark.mcgirr at gov.bc.ca

From gagsl-py2 at yahoo.com.ar  Wed Dec 19 12:13:41 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Wed, 19 Dec 2007 14:13:41 -0300
Subject: operator module isSequenceType with builtin set produces False
References: 

	<15e46d41-7534-4d9a-8939-bb3a8bf11ca0@e23g2000prf.googlegroups.com>

Message-ID: 

En Wed, 19 Dec 2007 06:28:03 -0300, MarkE   
escribi?:

>> Is there a short Pythonic way to determine whether an object is
>> iterable (iteratable ??) that I haven't thought of (getattr(obj,
>> '__iter__') ?). Would operator.isIterable() be at all a useful
>> addition ?

Yes, I think the only way is to try iter(obj) and see if it succeeds  
(that's basically the same as what you do with getattr, but actually  
creates the iterator and checks that it's of the right type).

> And here I probably meant container (although the url says sequence
> when the article meant container, bit like me):
> http://docs.python.org/ref/sequence-types.html
> "Containers usually are sequences (such as lists or tuples) or
> mappings (like dictionaries), but can represent other containers as
> well"
>
> So same question, but perhaps "isContainer()" rather than
> "isIterable()"

"container" is too generic. Perhaps you can look if it has a __len__  
attribute. But anyone could implement a linked list (the common interfase  
don't fit well with those sequence/mapping methods) and would be hard to  
deduce whether it is a container or not without further knowledge about it.

-- 
Gabriel Genellina

From duncan.booth at invalid.invalid  Fri Dec  7 06:59:40 2007
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 7 Dec 2007 11:59:40 GMT
Subject: File to dict
References: 
Message-ID: 

mrkafk at gmail.com wrote:

> def lookupdmo(domain):
>         lines = open('/etc/virtual/domainowners','r').readlines()
>         lines = [ [y.lstrip().rstrip() for y in x.split(':')] for x in
> lines]
>         lines = [ x for x in lines if len(x) == 2 ]
>         d = dict()
>         for line in lines:
>                 d[line[0]]=line[1]
>         return d[domain]

Just some minor points without changing the basis of what you have done 
here:

Don't bother with 'readlines', file objects are directly iterable.
Why are you calling both lstrip and rstrip? The strip method strips 
whitespace from both ends for you.

It is usually a good idea with code like this to limit the split method to 
a single split in case there is more than one colon on the line: i.e. 
x.split(':',1)

When you have a sequence whose elements are sequences with two elements 
(which is what you have here), you can construct a dict directly from the 
sequence.

But why do you construct a dict from that input data simply to throw it 
away? If you only want 1 domain from the file just pick it out of the list. 
If you want to do multiple lookups build the dict once and keep it around.

So something like the following (untested code):

from __future__ import with_statement

def loaddomainowners(domain):
    with open('/etc/virtual/domainowners','r') as infile:
        pairs = [ line.split(':',1) for line in infile if ':' in line ]
        pairs = [ (domain.strip(), owner.strip())
            for (domain,owner) in pairs ]
        return dict(lines)

DOMAINOWNERS = loaddomainowners()

def lookupdmo(domain):
    return DOMAINOWNERS[domain]

From paul.nospam at rudin.co.uk  Thu Dec 13 10:50:00 2007
From: paul.nospam at rudin.co.uk (Paul Rudin)
Date: Thu, 13 Dec 2007 15:50:00 +0000
Subject: Is Python really a scripting language?
References: <009101c83c55$4ee07a00$6501a8c0@aristotle>

	<2bc2ab76-da7b-43ec-969d-33f77b174a56@e6g2000prf.googlegroups.com>
	<13m12513p8pfqb4@corp.supernews.com>

Message-ID: <87lk7y387r.fsf@rudin.co.uk>

Neil Cerutti  writes:

> On 2007-12-13, Steven D'Aprano  wrote:
>> I have repeatedly argued in the past that we do ourselves a
>> disservice by describing Python as an interpreted language.
>>
>> Python is compiled. It has a compiler. It even has a built-in
>> function "compile". It's just not compiled to *machine code* --
>> but with even machine code often running on a virtual machine
>> in the CPU(s), the distinction is far less important now than
>> it was when Sun described Java as a compiled language despite
>> the lack of JIT compilers.
>
> When folks say Python is an interpreted language I think they
> mean it informally--they just mean you have to run an interpreter
> to execute it. *How* it's translated is irrelevent to the
> *informal* meaning.
>
> And I'd further argue that the informal meaning is the only one
> that makes any sense.
>

Many people still talk about lisp as "interpreted" despite the fact
that there have been compilers (that compile to machine code) for
decades. 

I'm not sure it's really a property of a language, rather of an
implementation.

From mail at microcorp.co.za  Wed Dec  5 02:54:47 2007
From: mail at microcorp.co.za (Hendrik van Rooyen)
Date: Wed, 5 Dec 2007 09:54:47 +0200
Subject: "Python" is not a good name, should rename to "Athon"
References: <47502B0C.3040504@fmed.uba.ar><880dece00712010651j74c4c407ra5623fde62457d1@mail.gmail.com><5rl3mvF14sd6cU1@mid.uni-berlin.de><13lb4pbp7lufd63@corp.supernews.com>

Message-ID: <017501c83714$e6434120$03000080@hendrik>

"Gabriel Genellina"  wrote:

>En Tue, 04 Dec 2007 14:49:36 -0300, Dennis Lee Bieber
> escribi?:

>> How about the cognate: Kulkukan?

>You meant Kukulkan. If you got it wrong from "Apocalypto" (Mel Gibson),
>well, it's just one of many errors in the film...

Either way its no good - sounds too much like Kalkul

- Hendrik

From dteslenko at gmail.com  Thu Dec 20 13:35:55 2007
From: dteslenko at gmail.com (Dmitry Teslenko)
Date: Thu, 20 Dec 2007 21:35:55 +0300
Subject: xml-filter with XMLFilterBase() and XMLGenerator() shuffles attributes
Message-ID: <91325fec0712201035o4c7f719y73fe1c3353404f01@mail.gmail.com>

Hello!
I've made a trivial xml filter to modify some attributes on-the-fly:

...
from __future__ import with_statement
import os
import sys

from xml import sax
from xml.sax import saxutils

class ReIdFilter(saxutils.XMLFilterBase):
	def __init__(self, upstream, downstream):
		saxutils.XMLFilterBase.__init__(self, upstream)

		self.__downstream = downstream
		return

	def startElement(self, name, attrs):
		self.__downstream.startElement(name, attrs)
		return

	def startElementNS(self, name, qname, attrs):
		self.__downstream.startElementNS(name, qname, attrs)
		return

	def endElement(self, name):
		self.__downstream.endElement(name)
		return

	def endElementNS(self, name, qname):
		self.__downstream.endElementNS(name, qname)
		return

	def processingInstruction(self, target, body):
		self.__downstream.processingInstruction(target, body)
		return

	def comment(self, body):
		self.__downstream.comment(body)
		return

	def characters(self, text):
		self.__downstream.characters(text)
		return

	def ignorableWhitespace(self, ws):
		self.__downstream.ignorableWhitespace(ws)
		return

...
	with open(some_file_path, 'w') as f:
		parser = sax.make_parser()
		downstream_handler = saxutils.XMLGenerator(f, 'cp1251')
		filter_handler = ReIdFilter(parser, downstream_handler)
		filter_handler.parse(file_path)

I want prevent it from shuffling attributes, i.e. preserve original
file's attribute order. Is there any ContentHandler.features*
responsible for that?

From nickjbyrne at gmail.com  Tue Dec  4 10:40:40 2007
From: nickjbyrne at gmail.com (Nick)
Date: Tue, 4 Dec 2007 07:40:40 -0800 (PST)
Subject: Escaping the semicolon?
Message-ID: <7dd5d462-b8a3-4260-92b9-3c75cd75995f@x69g2000hsx.googlegroups.com>

Hi all,

Is this expected behavior?

>>> s = '123;abc'
>>> s.replace(';', '\;')
'123\\;abc'

I just wanted a single backslash. I can see why this probably happens
but i wondered if it is definitely intentional.

Thanks
Nick

From MartinRinehart at gmail.com  Sat Dec 22 07:18:18 2007
From: MartinRinehart at gmail.com (MartinRinehart at gmail.com)
Date: Sat, 22 Dec 2007 04:18:18 -0800 (PST)
Subject: How to in Python
References: <5b91c387-0a96-466c-a5c7-7d412a9c6796@b1g2000pra.googlegroups.com>
	<9ce37ee7-b6ad-4d7b-b3b6-b67b3f2f1a7b@e10g2000prf.googlegroups.com> 
	<2be7103b-a119-4762-9d30-ace320b5d63a@j20g2000hsi.googlegroups.com> 

	<9c5b6014-9b86-47dc-b5c3-28ffb5686141@e4g2000hsg.googlegroups.com>

Message-ID: 

Chris Mellon wrote:
> You don't seem to be implementing the
> lexer in Python

I am absolutely implementing my language in Python, a language I have
now been writing for two entire weeks. This list has been more than
helpful, tolerating numerous newbie questions.

From gandalf at shopzeus.com  Thu Dec 13 10:13:50 2007
From: gandalf at shopzeus.com (Laszlo Nagy)
Date: Thu, 13 Dec 2007 16:13:50 +0100
Subject: kniterbasdb and datetime
In-Reply-To: <47612A89.1090104@shopzeus.com>
References: 	<17e6d6f4-7d8e-46c4-95ef-0afd19741b37@i12g2000prf.googlegroups.com>
	<47612A89.1090104@shopzeus.com>
Message-ID: <47614C2E.3030707@shopzeus.com>

>> Kinterbasdb probably expects the format looking like
>>
>> month/day/year
>>
>> rather than
>>
>> year-month-day
>>     
All right, I tried the month/day/year version:

print sql
print params
cur.execute(sql,params)

Results in:

Inserting new TTT codes...insert into ttt(

        ID,
        TTT,
        KIHIR
        ) VALUES (
    GEN_ID(G_TTT,1),
    ?,?)
[210227753, '11/1/2007']
Traceback (most recent call last):
  File "c:\Delphi5_Brinkman\Projects\TTTImport\tttupdate.py", line 131, 
in 
    cur.execute(sql,params)
kinterbasdb.ProgrammingError: (-413, 'isc_dsql_execute: \n  conversion 
error from string "2007-11-01"')

You see, I passed '11/1/2007' but the error says "2007-11-01". So what?

I also tried this:

Inserting new TTT codes...insert into ttt(

        ID,
        TTT,
        KIHIR
        ) VALUES (
    GEN_ID(G_TTT,1),
    ?, cast( ? as date) )
[210227753, '11/1/2007']

Results in:

Traceback (most recent call last):
  File "c:\Delphi5_Brinkman\Projects\TTTImport\tttupdate.py", line 131, 
in 
    cur.execute(sql,params)
kinterbasdb.ProgrammingError: (-804, 'isc_dsql_prepare: \n  Dynamic SQL 
Error\n
 SQL error code = -804\n  Data type unknown')

Right now I cannot see any way to specify a date parameter and as time 
goes by, it is becoming a biger problem for me. :-(

Please help.

    Laszlo

From bdelmee at advalvas._REMOVEME_.be  Wed Dec 26 09:46:43 2007
From: bdelmee at advalvas._REMOVEME_.be (=?ISO-8859-1?Q?Bernard_Delm=E9e?=)
Date: Wed, 26 Dec 2007 15:46:43 +0100
Subject: missing pydoc gui
In-Reply-To: <93d3dd33-e9ae-44ba-b74e-cb222378231c@21g2000hsj.googlegroups.com>
References: 
	<2d895dd7-6610-42e0-99fb-de4ab03fc528@l32g2000hse.googlegroups.com>

	<93d3dd33-e9ae-44ba-b74e-cb222378231c@21g2000hsj.googlegroups.com>
Message-ID: 

FWIW I am using 2.4.4 under debian etch and 2.5.1 under windows XP,
and pydoc seems to support the -[pgkw] flags under both versions.
When trying -g under debian, I am getting a stack-trace and a message
inviting me to install the python-tk package.

Does "pydoc -g" provide any feedback on your installation?

One nice alternative for python standard doc is the .CHM file
provided at python.org. You can use the "xchm" viewer under linux.

On 26/12/2007 14:56, JimG wrote:
> 
> Thanks for the suggestion, however, that does not seem to be the
> reason since I already have both tk and tkinter.  I tried adding tk-
> devel but that made no difference.

From tlis01 at googlemail.com  Fri Dec 14 04:53:07 2007
From: tlis01 at googlemail.com (Tlis)
Date: Fri, 14 Dec 2007 01:53:07 -0800 (PST)
Subject: reloading modules and isinstance()
References: 
Message-ID: <56f5e3b6-e6f0-4d38-9c13-65304230f87d@t1g2000pra.googlegroups.com>

Hi,

I have found that it is possible to reassign the instance.__class__
reference to the same class (but after reloading) to make the
isinstance() test work again! I know that it is a kind of hacking of
the Python interpreter, but it works :-)

From pesquisa485 at gmail.com  Tue Dec 11 15:05:36 2007
From: pesquisa485 at gmail.com (pesquisa)
Date: Tue, 11 Dec 2007 12:05:36 -0800 (PST)
Subject: cadastros de e-mails por estados
Message-ID: 

listas de email marketing livre de spam Maladireta e-mails para mala-
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divulga??o por email, divulga??o,  email para mala direta, divulga,
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From python.list at tim.thechases.com  Mon Dec 31 12:39:01 2007
From: python.list at tim.thechases.com (Tim Chase)
Date: Mon, 31 Dec 2007 11:39:01 -0600
Subject: Newbie: Why doesn't this work
In-Reply-To: <207173e6-dff0-481a-a2ef-6d3cfa719460@e10g2000prf.googlegroups.com>
References: <207173e6-dff0-481a-a2ef-6d3cfa719460@e10g2000prf.googlegroups.com>
Message-ID: <47792935.5060907@tim.thechases.com>

A couple items of note:

> class Person:

This should be "class Person(object)" to take advantage of some
of the features that new-style classes offer...particularly in
this case.

>     def __init__(self, fName="", lName=""):
>         self.__fName = fName
>         self.__lName = lName
> 
>     def __getattr__(self, attr):
>         if attr == "name":
>             return self.__fName + " " + self.__lName
> 
>     def __setattr__(self, attr, value):
>         # this assumes that value is a tuple of first and last name
>         if attr == "name":
>             self.__fName, self.__lName = value

if the attr isn't "name", no default behavior gets called here.
The common way, with new-style classes is to add

  else:
    parent(Person, self).__setattr__(attr, value)

Do be aware that this has some odd behaviors when what you put in
and what you get out are different types:

>>> p1.name = ("Joe", "Smith")
>>> p2.name = p1.name
Traceback (most recent call last):
  File "x.py", line 22, in ?
    p2.name = P.name
  File "x.py", line 13, in __setattr__
    self.__fName, self.__lName = value
ValueError: too many values to unpack

(slightly munged traceback as it actually came from the test
input file rather than the interactive prompt)

-tim

From usenet-mail-0306.20.chr0n0ss at spamgourmet.com  Sun Dec  2 05:10:49 2007
From: usenet-mail-0306.20.chr0n0ss at spamgourmet.com (Bjoern Schliessmann)
Date: Sun, 02 Dec 2007 11:10:49 +0100
Subject: "Python" is not a good name, should rename to "Athon"
References: 
	<78bdd499-a263-4c68-8e43-e3e59b111c7e@a39g2000pre.googlegroups.com>
	<5rcq90F13re18U1@mid.individual.net>

	<2bd39781-94e2-4d3d-b185-47a247d3acc2@d27g2000prf.googlegroups.com>
	<20a6e1c5-a865-45f4-b511-59ebd734ac74@e10g2000prf.googlegroups.com>

	<5ree76F14bp82U2@mid.individual.net>
	<0a48e277-9c49-4d8b-9469-6c96c6557858@s19g2000prg.googlegroups.com>
Message-ID: <5rfel9F1480rvU1@mid.individual.net>

Russ P. wrote:
> Python is an "acceptable" name, but Newton1 (or Newton3) would be
> a great name. 

Nah, I like Monty and Snakes. Newton already has his name as unit
for kg*m/s^2. :)

Regards,

Bj?rn

-- 
BOFH excuse #74:

You're out of memory

From deets at nospam.web.de  Mon Dec 24 09:52:16 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Mon, 24 Dec 2007 15:52:16 +0100
Subject: Releasing malloc'd memory using ctypes?
In-Reply-To: 
References: 
Message-ID: <5t9vdcF1ca377U1@mid.uni-berlin.de>

skip at pobox.com schrieb:
> I am starting to experiment with ctypes.  I have a function which returns a
> pointer to a struct allocated in heap memory.  There is a corresponding free
> function for that sort of struct, e.g.:
> 
>     from ctypes import *
> 
>     cdll.LoadLibrary("libthing.so")
>     c_thing = CDLL("libthing.so")
> 
>     class THING(Structure):
>         _fields_ = [("name", c_char_p),
>                     ("value", c_int)]
> 
>     get_thing = c_thing.get_thing
>     get_thing.restype = POINTER(THING)
>     free_thing = c_thing.free_thing
> 
> So I call get_thing() and get back this ctypes wrapper for a pointer to a
> thing.  I can extract the name and value elements from the thing instance
> just fine:
> 
>     thing_p = get_thing()
>     thing = thing_p.contents
>     print thing.name, "=", thing.value
> 
> Now I need to call free_thing.  What do I pass it?  thing_p?  Some attribute
> of thing_p?  Something else altogether?  The ctypes module docs seem to be
> strangely silent on the question of freeing heap memory which you've
> received from the underlying library's functions.

You simply declare free by loading libc (I'm a unix-guy, Windows will 
have an equivalent) as library and then declaring it. And of course it 
gets a void-pointer, so you have to cast you pointer to void* - as you'd 
have in C (or get a warning).

Diez

From arkanes at gmail.com  Wed Dec  5 16:39:37 2007
From: arkanes at gmail.com (Chris Mellon)
Date: Wed, 5 Dec 2007 15:39:37 -0600
Subject: Converting LF/FF delimited logs to XML w/ Python?
In-Reply-To: 
References: 
Message-ID: <4866bea60712051339i2a15a284i8bd238e79d84956b@mail.gmail.com>

On Dec 5, 2007 3:19 PM, Kadin2048  wrote:
> This is a very noob-ish question so I apologize in advance, but I'm
> hoping to get some input and advice before I get too over my head.
>
> I'm trying to convert some log files from a formfeed- and
> linefeed-delimited form into XML.  I'd been thinking of using Python to
> do this, but I'll be honest and say that I'm very inexperienced with
> Python, so before I dive in I wanted to see whether some more
> experienced minds thought I was choosing the right tool.
>
> Basically, what I want to do is convert from instant messaging logs
> produced by CenterIM, which look like this (Where "^L" represents ASCII
> 12, the formfeed character):
>
>     ^L
>     IN
>     MSG
>     1190126325
>     1190126325
>     hi
>     ^L
>     OUT
>     MSG
>     1190126383
>     1190126383
>     hello
>
> To an XML-based format* like this:
>
>     
>       hi
>       hello
>     
>
> Obviously there's information in the bottom example not present in the
> top (account names, protocol), but I'll grab those from the file name or
> prompt the user.
>
> Given that I'd be learning as I go along, is Python a good tool for
> doing this? (Am I totally insane to be trying this as a beginner?) And
> if so, where should I start?  I'd like to avoid massive
> wheel-reinvention if at all possible.
>
> I'm not afraid to RTFM but there's a lot of information around on Python
> and I'm not sure what's most relevant.  Suggestions on what to read,
> books to buy, etc., are all welcomed.
>

This is a pretty simple problem and is well suited for a beginner
project. The file() builtin will get you the data in your log file.
Using the split() method of the string object, you can break your
logfile into chunks.

There are a number of XML libraries in the standard lib, but xml.etree
is my preferred one. It is documented in the stdlib docs, and on the
effbot site.

From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Wed Dec 19 07:58:50 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Wed, 19 Dec 2007 13:58:50 +0100
Subject: import X between submodules in a package
In-Reply-To: 
References: 	<4768da12$0$10771$426a74cc@news.free.fr>

Message-ID: <47691552$0$12400$426a34cc@news.free.fr>

Donn Ingle a ?crit :
>> would be a VeryBadThing(tm). 
> :)
> 
>> Having explicits imports in each module is good wrt/ readability. 
> Okay, I can accept that. I worry that it's opening the module file over and
> over again 

Hopefully not ! "import" is not "include".

> - or does it open it once and kind of re-point to it when it
> hits a second import of the same thing?

You guess. When fisrt imported, the module's source is executed, a 
module object is created and stored in sys.modules, and the needed names 
are inserted into the importing module's namespace. Next times the 
module is "served" directly from sys.modules.

> 
>> package, you can of course factor them out in a distinct submodule and
>> just do a 'from myimports import *' at the top of the others submodules...
> Good point.

Note that while it's perfectly legal, that's a pattern I'd try to avoid 
unless I have a very good reason to use it.

From rpdooling at gmail.com  Mon Dec  3 09:53:23 2007
From: rpdooling at gmail.com (Rick Dooling)
Date: Mon, 3 Dec 2007 06:53:23 -0800 (PST)
Subject: python 2.5 - f=open('a_file.txt','w') gives [Errno 2]
References: <56e9075a-b3aa-4e8e-b5b7-5a58f0305945@s36g2000prg.googlegroups.com>
Message-ID: <190d6986-2f37-4432-bb2e-d6b1dac4e891@d21g2000prf.googlegroups.com>

On Dec 3, 7:47 am, dirkheld  wrote:

> IOError: [Errno 2] No such file or directory: 'a_file.txt'

I sometimes see that error on Linux when trying to run a script with
DOS line endings. Is it an imported file? I don't know Macs, but start
by making sure both your script and the file have Mac line endings?

rick

From sjmachin at lexicon.net  Sun Dec 30 17:32:30 2007
From: sjmachin at lexicon.net (John Machin)
Date: Sun, 30 Dec 2007 14:32:30 -0800 (PST)
Subject: Sub-classing unicode: getting the unicode value
References: <87fxxkugrd.fsf@physik.rwth-aachen.de>

	<87bq87vqkj.fsf@physik.rwth-aachen.de>
Message-ID: 

On Dec 31, 8:08 am, Torsten Bronger 
wrote:
> Hall?chen!
>
> Gabriel Genellina writes:
> > On 30 dic, 17:25, Torsten Bronger 
> > wrote:
>
> >> I sub-classed unicode in an own class called "Excerpt", and now I
> >> try to implement a __unicode__ method.  In this method, I want to
> >> get the actual value of the instance, i.e. the unicode string:
>
> > The "actual value of the instance", given that it inherits from
> > unicode, is... self.
>
> But then it is not unicode but Excerpt which I don't want.  The idea
> is to buffer the unicode representation in order to gain efficiency.
> Otherwise, a lot of unicode conversion would take place.
>

I'm confused: you are subclassing unicode, and want to use several
unicode methods, but the object's value appears to be an 8-bit
string!?!?

Care to divulge the code for your __init__ method?

From martin at v.loewis.de  Thu Dec 27 09:47:37 2007
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Thu, 27 Dec 2007 15:47:37 +0100
Subject: Python DLL in Windows Folder
In-Reply-To: 
References: 
	<533b7d320712231027h26623fffi3b471b6c85873a64@mail.gmail.com>
	<4866bea60712241007r1db5de8w75abab3c8a2e024e@mail.gmail.com>

	<0f90f7bc-2faa-4a21-99c3-28ad2e074e89@a35g2000prf.googlegroups.com>
	<533b7d320712250143te07c86ch4b47e79c3a55d331@mail.gmail.com>

Message-ID: <4773BB09.8030905@v.loewis.de>

>> Instead of being upset about cutting your word (which was not my
>> intention, sorry about that), it would be nice if you could make a
>> statement concerning the problem I mentioned: Having an object being
>> created by one MSVC runtime, msvcr80.dll and passing it to another
>> one, msvcr71.dll.
> 
> The C runtime doesn't create objects. 

Depends on your definition of "object". fopen will create objects,
and passing those to a different CRT will cause crashes.

Regards,
Martin

From Lie.1296 at gmail.com  Sat Dec 15 17:38:17 2007
From: Lie.1296 at gmail.com (Lie)
Date: Sat, 15 Dec 2007 14:38:17 -0800 (PST)
Subject: About Rational Number (PEP 239/PEP 240)
References: <5cded538-8c2c-4929-a3aa-ebe30eb1cc3d@e23g2000prf.googlegroups.com>
	<975f4667-2bf9-4d4b-a1de-95390154c8d1@t1g2000pra.googlegroups.com> 

Message-ID: 

On Dec 16, 4:55 am, "Fredrik Johansson" 
wrote:
> On Dec 15, 2007 10:05 PM, Lie  wrote:
>
> > Random ramble past here:
> > Actually, my vision would be not only fractions, but also rooted
> > number (square root, cube root, etc), it could be possible to
> > implement a type where a number consist of a rooted number times a
> > multiplier plus a variable [a + b * root(c, d)]. But I guess this
> > would be extremely complex and it requires nesting, probably very slow
> > if implementation isn't good. The advantage of using such is much
> > faster operations, as long as str() is not called. This actually
> > reflects my way of doing paper math, I save the lossy operations
> > (float division, root, trigonometric function) until the very end of
> > calculation (I'm not fundamentalist though, so compromise sometimes is
> > done here and there).
>
> You're looking for a computer algebra system. Try sympy:http://code.google.com/p/sympy/
>
> Fredrik

Yeah, that's why I consider them too complex for being included as a
core of a general programming language like Python. Nevertheless,
fraction datatype _IS_ elementary enough to be included as core
language feature.

From pavlovevidence at gmail.com  Fri Dec 28 15:06:33 2007
From: pavlovevidence at gmail.com (Carl Banks)
Date: Fri, 28 Dec 2007 12:06:33 -0800 (PST)
Subject: os.system question
References: 
Message-ID: <967fbefd-dcde-49da-846c-932e24d9e0ac@e6g2000prf.googlegroups.com>

On Dec 28, 1:52 pm, stanleyxu  wrote:
> Hi All,
>
> I am porting Perl script to Python script. Everything works fines until
> calling os.system().
>
> In my script, a number of DOS-commands will be executed.
>    for new_folder, old_folder in folder_array:
>        os.system('MD "' + new_folder + '"');
>        os.system('XCOPY "' + old_folder + '" "' + new_folder + '"');
>
> In Perl, all outputs will be printed in console directly.
> But in Python, outputs will be printed in separated cmd-windows.
>
> Is it possible to prevent so many cmd-windows to be opened and let all
> output be printed direct in Python shell?

Consider using the subprocess module instead.  It has more options
available than os.system, including I/O redirection, which seems to be
what you need.

In IDLE, you'll have to capture the output of the programs and print
it yourself, since you can't (AFAIK) run a DOS shell in an IDLE
window.  Untested:

import subprocess

output = subprocess.Popen('MD "' + new_folder + '"', shell=True,
    stdout=subprocess.PIPE, stderr=subprocess.STDOUT).communicate()[0]
print output

Carl Banks

From Russ.Paielli at gmail.com  Fri Dec 21 18:52:58 2007
From: Russ.Paielli at gmail.com (Russ P.)
Date: Fri, 21 Dec 2007 15:52:58 -0800 (PST)
Subject: exception message output problem
References: <482a0572-8dbe-42b6-9058-118ee0d28254@d4g2000prg.googlegroups.com>

Message-ID: <4e293e6a-3374-4a25-b37c-a760387b8c0c@s19g2000prg.googlegroups.com>

On Dec 21, 2:58 pm, Lie  wrote:

> Change the exception into this:
> class InconsistentUnits(Exception):
>         def __init__(self, args=""): self.args = (args,)
> # Python have an odd (read: broken) singleton implementation
> # single member tuple must have a comma behind it

Hey, that worked. Thanks.

Actually, the parens aren't needed, so this works too:

    def __init__(self, args=""): self.args = args,

The trailing comma wasn't necessary a while back (pre 2.5?), so
something in Python must have changed. I'd say that it looks a bit
cleaner without the trailing comma, so maybe whatever changed should
get changed back.

From rodmena.com at gmail.com  Sat Dec  1 03:30:19 2007
From: rodmena.com at gmail.com (farsheed)
Date: Sat, 1 Dec 2007 00:30:19 -0800 (PST)
Subject: "Show this file in explorer"
Message-ID: <8bca2fe0-c81f-4f93-8325-e0e99636762a@p69g2000hsa.googlegroups.com>

I have a big problem. I have a list of files that my script find and
list them in a little gui.
I need this function:

when i d-click on each item, I want explorer opens and selects that
item inside windows explorer.
like that beautiful buttom in iTunes.

Thanks in advane.

Farshid Ashouri.

From arnodel at googlemail.com  Mon Dec 24 11:08:09 2007
From: arnodel at googlemail.com (Arnaud Delobelle)
Date: Mon, 24 Dec 2007 08:08:09 -0800 (PST)
Subject: list in a tuple
References: 
Message-ID: <885d00ad-c6ec-484a-830d-bd64cb118127@l32g2000hse.googlegroups.com>

On Dec 24, 3:22?pm, montyphy... at gmail.com wrote:
> Recently, I got into a debate on programming.reddit.com about
> what should happen in the following case:
>
> >>> a = ([1], 2)
> >>> a[0] += [3]
>
> Currently, Python raises an error *and* changes the first element of
> the tuple. Now, this seems like something one would want to
> change - why raise an error *and* execute the thing it
> was complaining about? The discussion seems to have no end, and
> that is why I'm posting here. I would like to know what is the opinion
> of the people on this group... Am I really mistaking for thinking that
> this is strange and unwanted behavior? Btw I understand *why* is this
> happening, I just think it should change...
> And here is the post that started this discussion:http://filoxus.blogspot.com/2007/12/python-3000-how-mutable-is-immuta...
>
> Thanks for your replies

For the sake of clarity, say you have typed:

>>> L = [1]
>>> a = (L, 2)
>>> a[0] += [3]
Traceback (most recent call last):
  File "", line 1, in 
TypeError: 'tuple' object does not support item assignment
>>> a
([1, 3], 2)

I think that this is what happens when a[0] += [3] is executed:

1. list.__iadd__(L, [3]) is called, modifying L in place and returning
L.
2. tuple.__setitem__(a, L) is tried, raising the TypeError.

Notice that this problem doesn't arise when replacing lists with
tuples:

>>> a = ( (1,), 2)
>>> a[0] += (3, )
Traceback (most recent call last):
  File "", line 1, in 
TypeError: 'tuple' object does not support item assignment
>>> a
((1,), 2)

This is because tuple object don't have an __iadd__ method so a new
object tuple.__add__((1,),(3,)) is created and returned.

AFAICS, the only way to avoid the error message would be to check if
the new object is the same as the old one before raising the
TypeError:

class mytuple(tuple):
    "It's ok to do t[i] = obj as long as t[i] was already obj"
    def __setitem__(self, i, val):
        if self[i] is not val:
            raise TypeError("'mytuple' object is immutable")

So:

>>> a = mytuple(([1], 2))
>>> a[0] += [3] # This now works
>>> a[1] += 4   # This won't work as ints are immutable
Traceback (most recent call last):
  File "", line 1, in 
  File "tuple.py", line 4, in __setitem__
    raise TypeError("'mytuple' object is immutable")
TypeError: 'mytuple' object is immutable
>>> a
([1, 3], 2)

It wouldn't slow anything down I suppose, just make some currently
failing code succeed.

--
Arnaud

From bj_666 at gmx.net  Fri Dec 28 21:37:26 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 29 Dec 2007 02:37:26 GMT
Subject: Strange Behavior: csv module & IDLE
References: <3f24f105-ea2c-4f8f-aaf5-08340b4e7ca3@y5g2000hsf.googlegroups.com>
Message-ID: <5tlq76F1cvq5uU2@mid.uni-berlin.de>

On Fri, 28 Dec 2007 18:12:58 -0800, t_rectenwald wrote:

> Within the program, the snippet where I use the csv module is below:
> 
> ==============================
> csvfile = open('foo.csv', 'w')
> writer = csv.writer(csvfile)
> 
> for row in rows:
>     writer.writerow(row[0:3])
> 
> csvfile.close
> ==============================
> 
> The rows object is returned from a database query and is a list of
> tuples.  Now here is the strange thing.  If I run this program
> directly from the command line, i.e.,
> 
> D:\test> D:\python25\python foo.py
> 
> It runs fine, foo.csv is created and all is well.  However, when I run
> it through the IDLE shell as described above, the foo.csv file is
> created but remains empty at 0 bytes.  When I try to delete the file,
> Windows says it is in use.  The only way I can break out of this is by
> restarting the IDLE shell.  In other words, it appears that the shell
> is hanging.
> 
> This will run through Task Scheduler, so shouldn't be a problem, but
> I'm worried that I'm coding this wrong for it to be acting this way
> under IDLE.  Any help or explanation would be appreciated.

You are not closing the file so the buffered data is not written to disk. 
To call a function you need the parenthesis, otherwise you are just
referencing it without any effect.

Ciao,
	Marc 'BlackJack' Rintsch

From murderbystealth at gmail.com  Sat Dec 29 10:54:09 2007
From: murderbystealth at gmail.com (=?ISO-8859-1?Q?Michael_Bernhard_Arp_S=F8rensen?=)
Date: Sat, 29 Dec 2007 16:54:09 +0100
Subject: Howto on callbacks, queues and good design patterns
Message-ID: <47766da0$0$2085$edfadb0f@dtext02.news.tele.dk>

Hi there.

As a newbie, I need to learn about callbacks and queues(syntax and 
examples) working together.

At work we talk a lot about design patterns. Does any of you know a good 
  site about that or any good books from Amazon?

I started using python at work in the summer 2007. I think I know the 
stuff, but I need to expand my understanding of the more complex 
programming techniques.

Thanks in advance.

/Karneevor

From andymac at bullseye.apana.org.au  Sat Dec 22 19:31:20 2007
From: andymac at bullseye.apana.org.au (Andrew MacIntyre)
Date: Sun, 23 Dec 2007 10:31:20 +1000
Subject: Pure Python GUI lib?
In-Reply-To: <6a4f17690712220531y1e86021bt6ed1042e73596b2e@mail.gmail.com>
References: <6a4f17690712220531y1e86021bt6ed1042e73596b2e@mail.gmail.com>
Message-ID: <476DAC58.9010301@bullseye.andymac.org>

oyster wrote:
> For the word "Pure", I mean it is not a C/C++/Z++.. extension, so that
> we can use it under  pythons of different version. Is it possible?
> I don't like to update the module for different python and the module
> 
> Currently, I am writing the interface to
> iup(http://www.tecgraf.puc-rio.br/iup) via ctypes, but find 2 too
> strange things which have let me feel blue for some days, and I don't
> know whether it can be successful or not. Can anyone give me some
> lights? Thank you. :)

Venster is a Windows API GUI wrapper on top of ctypes.  Fairly low level,
but quite viable.  I have an application at work using an old version 
(0.21) on an old version of ctypes (0.6.3) that works fine, though it
doesn't do MDI.

Sadly Venster appears not to have recently been maintained in line with
changes in ctypes, but the code (available from SourceForge) could still 
prove a useful reference.

Cheers,
Andrew.

-- 
-------------------------------------------------------------------------
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 rodperson at verizon.net  Tue Dec  4 19:07:09 2007
From: rodperson at verizon.net (Rod Person)
Date: Tue, 04 Dec 2007 19:07:09 -0500
Subject: Python Class Best Practice
In-Reply-To: <4755E7F6.7030008@islandtraining.com>
References: <20071204181804.70edef0a@atomizer.opensourcebeef.net>
	<4755E7F6.7030008@islandtraining.com>
Message-ID: <20071204190709.556694a9@atomizer.opensourcebeef.net>

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On Tue, 04 Dec 2007 15:51:18 -0800
Gary Herron  wrote:
> Rod Person wrote:
> >
> > 1:
> > class Foo(object):
> >   member1=''
> >   member2=0
> >  
> >   def __init__(self,member1='',member2=0):
> >     self.member1 = member1
> >     self.member2 = member2
> >
> > 2:
> > class Foo(object):
> >     def  __init__(self,member1='',member2=0):
> >         self.member1 = member1
> >         self.member2 = member2
> >
> >
> Both examples will store values for member1 and member2 in every
> instance.  Any code that accesses self.member1 (or 2) will get the
> value stored in the instance. 
> 
> Example 1 which also creates two *class* members of the same name
> won't affect the conclusion of the previous paragraph.  The two
> values in the class will be shadowed by each instances members of the
> same name.
> 
> But now I need to ask, what did you expect to happen here? 

Well I guess I should say that I'm coming to Python from Delphi, so I
am used to creating classes like in #1, but I'm used to having to
declare a scope for each member. Not having a scope declaration is
really throwing me some.

> 
>  * If you thought those two extra assignments in example 1 effected
> the execution or storage in the __init__ (or any other method), you
> were mistaken.
> 

Yes, this is what I thought. I thought that declaring member1='' would
just assign the a default value on creation of the class (as in
Delphi). I probably shouldn't have give the parameters in the __init__
a default value in example 1.

> Gary Herron

Thanks. 

- -- 
Rod

http://roddierod.homeunix.net:8080
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From fetchinson at googlemail.com  Wed Dec  5 00:46:04 2007
From: fetchinson at googlemail.com (Daniel Fetchinson)
Date: Tue, 4 Dec 2007 21:46:04 -0800
Subject: Python surpasses Perl in TIOBE index
In-Reply-To: <5rm9b3F15l05pU1@mid.individual.net>
References: <7e117be5-4308-43ae-a34b-cd9cb72f15b6@b40g2000prf.googlegroups.com>
	<75e8931d-87fa-45a3-8638-c5c8508d77e2@s12g2000prg.googlegroups.com>
	<87fxyifnpp.fsf@rudin.co.uk>

	<5rm9b3F15l05pU1@mid.individual.net>
Message-ID: 

> > Well we Python folks are spoiled but for most people C++ counts as a
> > high level language
>
> Well, some parts are high-level, but it's full of very
> deep elevator shafts for you to accidentally fall
> into...
>
> A truly high-level language also *doesn't* have low
> level parts (or at least doesn't expose them unless
> you explicitly ask it to).

Anyone has an idea what the huge peak around the middle of 2004 can be
attributed to?

http://www.tiobe.com/tiobe_index/Python.html

From exarkun at divmod.com  Tue Dec 11 14:43:52 2007
From: exarkun at divmod.com (Jean-Paul Calderone)
Date: Tue, 11 Dec 2007 14:43:52 -0500
Subject: DNS servers in Python - which ones are a good base for work?
In-Reply-To: <475ee012$0$36349$742ec2ed@news.sonic.net>
Message-ID: <20071211194352.8162.1753846892.divmod.quotient.44693@ohm>

On Tue, 11 Dec 2007 11:10:52 -0800, John Nagle  wrote:
>   I need to do a non-standard DNS server in Python.  This
>is for a spam blacklist type DNS server, not for IP lookup.
>"dnspython" seems to be client side only.  Oak DNS is
>deprecated.  Suggestions?
>

There's Twisted Names.  I wrote a custom DNS server with it just last week.
The documentation is a bit sparse, but it's not particularly complicated.

Jean-Paul

From fivfm at lycos.com  Mon Dec 31 07:07:43 2007
From: fivfm at lycos.com (fivfm at lycos.com)
Date: 31 Dec 2007 12:07:43 GMT
Subject: M.I 5-Perse cution ` 22,5 44 + 837  = 23 ,381
Message-ID: 

MI5. Persecution Update: Friday 7 April, 2000

22,544 +. 837 = 23,381

Last weekend I delivered another 837 faxes to politicians and the. media on
the subject. of the security service conspiracy which has destroyed my
life.. This brings the total in the last three years to at least
23,381. These totals do not include. partially delivered faxes.

Some. of the recipients of these faxes must know that what I say is
true; and I hope to motivate those people to acknowledge the reality. of
the. harassment which has followed me for ten years. It takes much time to
transmit these. articles, but as OCG MD Simpson-Wells said to me in 1992,
you have to be a good. communicator if you are to succeeed.

Harassment in. February 2000

Following a quiet. period of almost five months, the persecution resumed
with a vengeance in. late January/February 2000. At this time I was at home
in Clapham, London and was. a relatively easy target for the
persecutors. They have my house bugged, for audio. and I believe video in
some. rooms as well; so they can find out easily where I will be going on a
particular day, and place people in. that location to mouth words of abuse
at me. (I know the last sentence. sounds like classic paranoia, but it
happens to. be true, and some of the people reading this know it to be
true.)

On Friday 11 February 2000 I went shopping in Croydon, to buy a. watch at
H. Samuels jewellers in the Whitgift Centre. While I was. there two youths
came into the shop, one of them quietly uttered an obscenity at me,. and
they immediately walked out.. They showed no interest in the shop.

That Sunday I met with a friend in Clapham, who started needling. me about
"do you know anything about the CIA. and FBI?". Rather unsubtle, and
worrying considering Ive known this guy for. 20 years. From the words and
demeanour. of this "friend" and others in February, I saw that the
persecutors have again been trying. to separate from me what remains of my
social. life.

Incidents in. my Road in February

MI5 very. rarely place people in my home road to harass me, but such was
their persecutory fervour in February that they did so on three. separate
occasions. On the first such occasion,. I was met my two youths who,
grinning, said a deeply offensive sexual obscenity. at me - at which I
coughed at them, so. they called me a "wanker". This incident is safely
recorded on minidisc-walkman, but because of the. offensive nature of their
abuse the recording will. not be made public.

Another. incident very early in the morning of Sunday 20/Feb/2000 occurred
outside my home, following an evening in Croydon with. some
schoolfriends.. Again there were two youths - for some reason the
persecutors always. travel in twos or threes, very rarely is there just one
of them - perhaps they need. a group to bolster their courage, perhaps just
one of them wouldnt have the guts to say something unpleasant. One. of the
youths said quietly, and bitterly, "shitty, very. shitty".

Anyway, in March there were no further incidents near my house. in in my
road, and. our neighbours are very well disposed towards us, so let us hope
that the current quiet. continues.

13814

--
Posted via NewsDemon.com - Premium Uncensored Newsgroup Service
      ------->>>>>>http://www.NewsDem

From andrea.baron at tin.it  Tue Dec  4 05:33:03 2007
From: andrea.baron at tin.it (beronz)
Date: Tue, 4 Dec 2007 02:33:03 -0800 (PST)
Subject: make money with bux!!
Message-ID: 

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From chris.gonnerman at newcenturycomputers.net  Tue Dec  4 23:39:38 2007
From: chris.gonnerman at newcenturycomputers.net (Chris Gonnerman)
Date: Tue, 04 Dec 2007 22:39:38 -0600
Subject: Why Python 3?
Message-ID: <47562B8A.3040506@newcenturycomputers.net>

I spent some time today reading about Python 3, and specifically the 
differences between Python 3 and Python 2, and I was left with a 
question... why?  Why bother to change to Python 3, when the CPython 
implementation is slower, and probably will be for a while?

When I learned Python, 1.5 was the current version.  Each new version 
from 2.0 on brought goodies to the table... I think I have made use of 
about half of the "advancements" that have come along since.  But I was 
swayed into taking Python seriously by Eric Raymond's article in Linux 
Journal, where he talked about how much easier it was to read his old 
code in Python than in Perl, and how the whole white space thing wasn't 
so bad.  I discovered I agreed with him.  Python has been my favorite 
language ever since.

But... almost all of my old 1.5 code ported painlessly to 2.x.  No need 
for a "1.5to2" script, whereas I see that there is a "2to3" script for 
converting modules.  Python 1.5 and 2.x are "executable pseudocode," 
something that can be easily read by anyone with a modicum of 
programming knowledge.  In fact, the things I rarely or never use in 
Python tend to be those things I find hardest to read (like list 
comprehensions).  Few of the changes along the way have required me to 
change how I *write* code; probably the worst was the integer division 
change, which I disagreed with, but I went along with the community.

I don't see myself using Python 3 for a long time.  Probably as long as 
I can hold out.  Where are my goodies?  What is my payoff for learning 
how to write code the new way?  I can't see it.  Many things seem a lot 
less obvious... like, what was wrong with .keys() returning a 
list?  Now it returns some strange object type.

I don't think I can surely be the only one.  Certainly, I'm nobody 
important; it's not as if my opinion has any real bearing on the 
situation.  I suspect that many Python coders will stay with 2.x; after 
all, this is Open Source... there is no Micro$oft forcing us to upgrade 
to get more licenses.  If enough people stay with 2.x... will the 
project fork?  Will there be enough of "us" to maintain Python 2 
indefinitely?  Will module maintainers have to choose which version of 
Python to support?  It's already a pain for me to keep the GDmodule up 
with the current Python release... and it's a pretty small module.

I just don't see the point.  I feel like we already have all we need in 
Python 2.  I feel like the language is becoming less and less "friendly" 
and "readable" as it evolves.

Just my two cents, I guess.

-- Chris Gonnerman

From grante at visi.com  Wed Dec 19 11:17:04 2007
From: grante at visi.com (Grant Edwards)
Date: Wed, 19 Dec 2007 16:17:04 -0000
Subject: How to generate pdf file from an html page??
References: 
	<13md67emkcesh11@corp.supernews.com>
	<038bbf25-3345-4224-b506-54f9fb4b6545@d27g2000prf.googlegroups.com>
	<13mieavg35e92@corp.supernews.com>

Message-ID: <13mih00shme5ee1@corp.supernews.com>

On 2007-12-19, Terry Jones  wrote:
>>>>>> "Grant" == Grant Edwards  writes:
>Grant> On 2007-12-19, abhishek  wrote:
>>>> > Hi everyone, I am trying to generate a PDF printable format file from
>>>> > an html page. Is there a way to do this using python. If yes then
>>>> > which library and functions are required and if no then reasons why it
>>>> > cant be done.
>>>> 
>>>> Here's one way:
>>>> 
>>>> ------------------------------html2pdf.py-----------------------------------------
>>>> #!/usr/bin/python
>>>> import os,sys
>>>> 
>>>> inputFilename,outputFilename = sys.argv[1:3]
>>>> 
>>>> os.system("w3m -dump %s | a2ps -B --borders=no | ps2pdf - %s" % (inputFilename,outputFilename))
>
> Note that this is highly insecure. outputFilename could be passed e.g., as
>
>   /tmp/file.pdf; rm -fr /home/abhishek

Here's a half-assed solution:

inputFilename = inputFilename.replace("'","")
outputFilename = outputFilename.replace("'","")

os.system("w3m -dump '%s' | a2ps -B --borders=no | ps2pdf - '%s'" % (inputFilename,outputFilename))

As somebody else suggested, building the pipeline "by hand"
using the subprocess module is the most bullet-proof method.

-- 
Grant Edwards                   grante             Yow! I brought my BOWLING
                                  at               BALL -- and some DRUGS!!
                               visi.com            

From gagsl-py2 at yahoo.com.ar  Tue Dec 18 08:05:43 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Tue, 18 Dec 2007 05:05:43 -0800 (PST)
Subject: checking a string against multiple patterns
References: 
Message-ID: <2b178dc3-771b-471a-8b9b-5642763d5397@i12g2000prf.googlegroups.com>

On 18 dic, 09:41, tomasz  wrote:

> Hi,
>
> here is a piece of pseudo-code (taken from Ruby) that illustrates the
> problem I'd like to solve in Python:
>
> str = 'abc'
> if str =~ /(b)/     # Check if str matches a pattern
>   str = $` + $1    # Perform some action
> elsif str =~ /(a)/ # Check another pattern
>   str = $1 + $'    # Perform some other action
> elsif str =~ /(c)/
>   str = $1
> end
>
> The task is to check a string against a number of different patterns
> (containing groupings).
> For each pattern, different actions need to be taken.
>
> In Python, a single match of this kind can be done as follows:
>
> str = 'abc'
> match = re.search( '(b)' , str )
> if match: str = str[0:m.start()] + m.group(1)    # I'm not sure if
> this way of accessing 'pre-match'
>                                                                # is
> optimal, but let's ignore it now
>
> The problem is that you you can't  extend this example to multiple
> matches with 'elif'
> because the match must be performed separately from the conditional.
>
> This obviously won't work in Python:
>
> if match=re.search( pattern1 , str ):
>   ...
> elif match=re.search( pattern2 , str ):
>   ...
>
> So the only way seems to  be:
>
> match = re.search( pattern1 , str ):
> if match:
>    ....
> else:
>    match = re.search( pattern2 , str ):
>    if match:
>       ....
>    else:
>        match = re.search( pattern3 , str ):
>        if match:
>            ....
>
> and we end up having a very nasty, multiply-nested code.

Define a small function with each test+action, and iterate over them
until a match is found:

def check1(input):
  match = re.search(pattern1, input)
  if match:
    return input[:match.end(1)]

def check2(input):
  match = re.search(pattern2, input)
  if match:
    return ...

def check3(input):
  match = ...
  if match:
    return ...

for check in check1, check2, check3:
  result = check(input)
  if result is not None:
    break
else:
  # no match found

--
Gabriel Genellina

From jjl at pobox.com  Mon Dec  3 17:23:55 2007
From: jjl at pobox.com (John J. Lee)
Date: Mon, 03 Dec 2007 22:23:55 GMT
Subject: issue with cookielib.LWPCookieJar
References: <468c2718-0e62-41b2-bf09-cd67f5978594@e25g2000prg.googlegroups.com>
Message-ID: <87lk8bl8n8.fsf@pobox.com>

JD Smith  writes:

> Greetings:
>
> My cookiejar contains the cookie that I need however when I do
> cj.save(file) it does not actually save out to the cookies.lwj  Does
> anyone have any clue what would keep this from saving?  It CREATED my
> cookies.lwj file so I know it's not permissions.

You want a true ignore_discard argument to .save() and .load() (or
.revert()).

John

From mail at microcorp.co.za  Sun Dec  9 01:53:31 2007
From: mail at microcorp.co.za (Hendrik van Rooyen)
Date: Sun, 9 Dec 2007 08:53:31 +0200
Subject: how to convert 3 byte to float
References: <475a7336$0$13116$9b4e6d93@newsspool2.arcor-online.net><5rvc6hF17032iU1@mid.individual.net><475a8591$0$17533$9b4e6d93@newsspool4.arcor-online.net>
	<1F3FD2D2-EE5A-4AAA-9DB9-A8D2BB129DE5@comhem.se>
Message-ID: <009801c83a30$36b916c0$03000080@hendrik>

 "Tommy Nordgren"  wrote:
>
> On 8 dec 2007, at 12.52, Mario M. Mueller wrote:
>
> > Bjoern Schliessmann wrote:
> >
> > [...]
> >> BTW, who in his mind designs three byte floats? Memory isn't that
> >> expensive anymore. Even C bool is four bytes long.
> >
> > It's output of a digitizer (but not that old). I was also wondering
> > about
> > the reason for this limitation (maybe the design is ~20 years old).
> >
> > Mario
> > --
> One thing to consider: It is possible that one of the bytes
> contributes bits
> to BOTH the mantissa and the exponent ; Do you know the relative
> accurazy of the digitizer?

What is it digitising - if its an Analogue to Digital converter, then the 24
bits
may not be floats at all, but simple integer counts.

Is there no Fine Manual documenting the output format?

- Hendrik

From DelDotDr at gmail.com  Mon Dec  3 05:36:44 2007
From: DelDotDr at gmail.com (DelDotDr at gmail.com)
Date: Mon, 3 Dec 2007 02:36:44 -0800 (PST)
Subject: Any idea how to open Matlab and run M-files by using Python?
References: <1ccff7ae-df36-4bf5-8f70-bcf81ded014d@t47g2000hsc.googlegroups.com>
Message-ID: 

Hello,

One solution I can think of would be to write an interface to the
Matlab command prompt using pexpect, the python implementation of
expect. Expect allows you to spawn and interact with other process.
There is already a cool implementation of exactly this in Sage, an
open source computer algebra system written in python.

If you want to see something work immediately, try installing sage
(sage.math.washington.edu/sage).

I did some experimenting (in a linux environment) and it works quite
nicely.

Here is an example:

I wrote a simple matlab function myAdd saved as myAdd.m

function thesum = myAdd(a, b)
thesum = a+b;

I put the file in my Matlab search path.

In sage, I did this:
sage: a = matlab('myAdd(2,2)')
sage: a
      4

This would require you to run your python scripts using Sage instead
of just python.
You can import the sage library into python, but it's kind of non-
trivial.

At the very least, you can study sage's matlab interface, which is
written in python. It is very easy to spawn process and give commands
with pexpect, but not as fun to get results because it involves
parsing to get the output.

Good luck,
-Dorian

On Dec 2, 8:02 pm, itcecsa  wrote:
> Hi,
>
> I am implementing a small Python project, what I am going to do is to
> open Matlab and run some M-files, and get some output from Matlab
> command prompt.
>
> I have no idea how to open Matlab from Python!
>
> Any suggestions would be appriciated!

From Mberyl1 at aol.com  Sat Dec  1 15:43:39 2007
From: Mberyl1 at aol.com (Mberyl1 at aol.com)
Date: Sat, 1 Dec 2007 15:43:39 EST
Subject: LIVE TEEN CAM in my ROOM!
Message-ID: 

-------------- next part --------------
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From damonjulian at yahoo.com  Sun Dec 23 12:52:21 2007
From: damonjulian at yahoo.com (damonjulian at yahoo.com)
Date: Sun, 23 Dec 2007 09:52:21 -0800 (PST)
Subject: why does a disabled button respond to clicks
Message-ID: <9168ecd1-1100-47db-83b7-6e3f04a44cd3@d21g2000prf.googlegroups.com>

hi ,i created 3 buttons such that if button1 is clicked it will
disable button2 ,and clicking button3 will restore state of button2 to
normal,

to my dismay i find that button2 still responds to clicks even if it
is greyed out

here is the code..am i doing something wrong? is there a way to truly
disable the button?

class MyApp:
	def __init__(self,parent):
		self.mainframe=Frame(parent)
		self.mainframe.pack()

		#self.canvorig=Canvas(self.mainframe,width=100,height=200)
		#self.canvorig.pack()
		self.button1=Button(self.mainframe,bg="green")
		self.button1.configure(text="1")
		self.button1.pack(side=LEFT)
		self.button1.bind("",self.buttonClick1)
		self.button2=Button(self.mainframe,bg="yellow")
		self.button2.configure(text="2")
		self.button2.pack(side=LEFT)
		self.button2.bind("",self.buttonClick2)
		self.button3=Button(self.mainframe,bg="red")
		self.button3.configure(text="3")
		self.button3.pack(side=RIGHT)
		self.button3.bind("",self.buttonClick3)

	def buttonClick1(self,event):
		print "ok clicked"
		self.button2.configure(state="disabled")
		self.button2.update_idletasks()

	def buttonClick2(self,event):
		print "2 clicked"

	def buttonClick3(self,event):
		print "3 clicked"
		self.button2.configure(state="normal")
		self.button2.update_idletasks()

root = Tk()
myapp = MyApp(root)
root.mainloop()

From te509 at york.ac.uk  Sat Dec 15 09:33:04 2007
From: te509 at york.ac.uk (te509 at york.ac.uk)
Date: 15 Dec 2007 14:33:04 +0000
Subject: Convert a sequence of bits to a bit-string
Message-ID: 

Hi guys,
does anybody know how to convert a long
sequence of bits to a bit-string? I want to avoid this:

>>> bit=0011010000000000000111111111111111000000000000000001111111010111111111111001 
>>> str(bit)
'949456129574336313917039111707606368434510426593532217946399871489'

I would appreciate a prompt reply because I have a python assessment to 
submit. 
Thanks, 
Thomas

From tim.leslie at gmail.com  Wed Dec  5 06:35:41 2007
From: tim.leslie at gmail.com (Tim Leslie)
Date: Wed, 5 Dec 2007 22:35:41 +1100
Subject: Why did no one tell me about import antigravity?
In-Reply-To: 
References: <52f0eca3-e807-4890-b21d-460e0453c0e2@e4g2000hsg.googlegroups.com>

Message-ID: 

On 5 Dec 2007 10:08:48 GMT, Adrian Cherry  wrote:
> Ant  wrote in news:52f0eca3-e807-4890-b21d-
> 460e0453c0e2 at e4g2000hsg.googlegroups.com:
>
> > Python on xkcd:
> >
> > http://xkcd.com/353/
> >
>
> Another good comic from xkcd, I'm surprised by the muted response
> on here. Don't forget to check out the alt. text on the comic
>
> Alt text: "I wrote 20 short programs in Python yesterday. It was
> wonderful. Perl, I'm leaving you."
>

+1 QOTW

Tim

>
> Regards
>
> Adrian
>
>
>
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>

From bignose+hates-spam at benfinney.id.au  Tue Dec 11 05:24:04 2007
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Tue, 11 Dec 2007 21:24:04 +1100
Subject: Securely distributing python source code as an application?
References: <7489fd22-e2dd-44b8-a35b-e2858fa36d32@b1g2000pra.googlegroups.com>
Message-ID: <87lk815y2j.fsf@benfinney.id.au>

xkenneth  writes:

> I'll shortly be distributing a number of python applications that
> use proprietary.

That's unfortunate. Hopefully it's not too late to avoid restricting
yourself and your users in this way.

> The software is part of a much larger system and it will need to be
> distributed securely. How can i achieve this?

That depends partly on what "distributed securely" means for you. Can
you elaborate? In particular, what threat model are you seeking
security from?

-- 
 \          "If I ever get real rich, I hope I'm not real mean to poor |
  `\                           people, like I am now."  -- Jack Handey |
_o__)                                                                  |
Ben Finney

From MartinRinehart at gmail.com  Fri Dec 21 14:02:17 2007
From: MartinRinehart at gmail.com (MartinRinehart at gmail.com)
Date: Fri, 21 Dec 2007 11:02:17 -0800 (PST)
Subject: How to in Python
References: <5b91c387-0a96-466c-a5c7-7d412a9c6796@b1g2000pra.googlegroups.com>
	<9ce37ee7-b6ad-4d7b-b3b6-b67b3f2f1a7b@e10g2000prf.googlegroups.com> 
	<2be7103b-a119-4762-9d30-ace320b5d63a@j20g2000hsi.googlegroups.com> 

Message-ID: <9c5b6014-9b86-47dc-b5c3-28ffb5686141@e4g2000hsg.googlegroups.com>

Chris Mellon wrote:
> Is there some reason that you think Python is incapable of
> implementing lexers that do this, just because Python lexer accepts
> it?

Absolutely not. My opinion is that it's a bug. A very, very minor bug,
but still six-legged.

> Note that if you're using your lexer to mark up or pretty print or
> whatever Python source, it's wrong - 0x is (rightly or not) a valid
> Python literal.

My lexer is for my language, Decaf, which, in this particular, is the
same as Python. Here's what I find at at python.org/ref: (2.4.4).

    hexinteger ::= "0" ("x" | "X") hexdigit+

Implementation differs from specification. In this case, I think the
spec is more sensible.

From charl.loubser at gmail.com  Thu Dec 13 02:16:01 2007
From: charl.loubser at gmail.com (Merrigan)
Date: Wed, 12 Dec 2007 23:16:01 -0800 (PST)
Subject: E-Mail Parsing
Message-ID: <53d05498-d057-4e8f-90c8-48bb1cdf233f@t1g2000pra.googlegroups.com>

Hi There,

I am writing a script to administer my E-Mail Server. The One thing
I'm currently struggling with is kind of Parsing the E-Mail adress
that I supply to the script.

I need to get the username (The part BEFORE the @ sign) out of the
address so that I can use it elsewhere. The problem I have with this
is that both the domain, and the username are variable lenghts and
that I have no idea how to split the two parts.

Is there any way that I can do this?

Thank ye very much.

 -- Merrigan

From slimaak at gmail.com  Sat Dec  1 12:04:33 2007
From: slimaak at gmail.com (slomo)
Date: Sat, 1 Dec 2007 09:04:33 -0800 (PST)
Subject: How to read strings cantaining escape character from a file and 
	use it as escape sequences?
References: <98aefc9f-cfed-43ef-b67a-1b94ed1c3fcc@s12g2000prg.googlegroups.com>

Message-ID: <752b4684-56ef-41d4-ba07-ed11b5d1f913@s36g2000prg.googlegroups.com>

WOW! Great! Thanks, Duncan.

On 12?2?, ??12?33?, Duncan Booth  wrote:
> slomo  wrote:
> >>>> print line
> > \u0050\u0079\u0074\u0068\u006f\u006e
>
> > But I want to get a string:
>
> > "\u0050\u0079\u0074\u0068\u006f\u006e"
>
> > How do you make it?
>
> line.decode('unicode-escape')

From martin at v.loewis.de  Wed Dec 12 19:43:22 2007
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Thu, 13 Dec 2007 01:43:22 +0100
Subject: Help needed with python unicode cgi-bin script
In-Reply-To: <6dK7j.8027$581.1065@trnddc04>
References: 
	<475cefe8$0$31165$9b622d9e@news.freenet.de>
	<8tj7j.5048$bW.4346@trnddc07>
	<24f3c1af-bf57-4b94-8d02-d7e956764f90@s8g2000prg.googlegroups.com>

	<0f09d97f-d742-4a3e-a459-91e730748d7e@b1g2000pra.googlegroups.com>
	<_vE7j.5156$bW.2309@trnddc07>
	<475f1dc4$0$19340$9b622d9e@news.freenet.de>

	<6dK7j.8027$581.1065@trnddc04>
Message-ID: <4760802b$0$31162$9b622d9e@news.freenet.de>

> It looks like your suggestions to change charset were incorrect. My example 
> works equally well with charset=utf8 as it does with charset=windows-1252.

It rather looks like that you didn't follow the suggestions carefully.
In my very first message, I wrote

# Sending "Content-type: text/html" is not enough. The web browser needs
# to know what the encoding is. So you should send
#
# Content-type: text/html; charset="your-encoding-here"

As Duncan Booth explains, this is what you should have done instead - if
you do that, you can also leave the AddDefaultCharset declaration.

Regards,
Martin

From hniksic at xemacs.org  Mon Dec  3 10:36:18 2007
From: hniksic at xemacs.org (Hrvoje Niksic)
Date: Mon, 03 Dec 2007 16:36:18 +0100
Subject: Overriding member methods in __init__
References: 
	<47540d0f$0$12505$426a74cc@news.free.fr>

Message-ID: <87ir3fx025.fsf@mulj.homelinux.net>

c james  writes:

>> class YesNo(object):
>>    def __init__(self, which):
>>      self.which = which
>> 
>>    def __call__(self, val):
>>      return (self.no, self.yes)[self.which](val)
>> 
>>    def yes(self, val):
>>      print 'Yes', val
>> 
>>    def no(self, val):
>>      print 'No', val
>
> Thanks, I was trying to eliminate another level of indirection with a
> test at each invocation of __call__

Allowing instance lookup of __call__ would slow down normal uses of
the internal __call__ mechanism.  Since it used for all function and
method calls, it needs to remain extremely fast.  If you're really
worried about performance, you can define YesNo.__new__ to return
either a Yes instance or a No instance, depending on the value:

class YesNo(object):
    def __new__(cls, which):
        if which:
            return object.__new__(Yes)
        else:
            return object.__new__(No)

    def yes(self, val):
        print 'Yes', val

    def no(self, val):
        print 'No', val

class Yes(YesNo):
    def __call__(self, val):
        self.yes(val)          # no check at every call

class No(YesNo):
    def __call__(self, val):
        self.no(val)           # likewise

>>> x = YesNo(True)
>>> x
<__main__.Yes object at 0xb7d0ee8c>
>>> x('foo')
Yes foo
>>> y = YesNo(False)
>>> y
<__main__.No object at 0xb7d0eeec>
>>> y('foo')
No foo
>>> isinstance(x, YesNo)
True
>>> isinstance(y, YesNo)
True

From andre.roberge at gmail.com  Mon Dec 17 19:25:53 2007
From: andre.roberge at gmail.com (=?ISO-8859-1?Q?Andr=E9?=)
Date: Mon, 17 Dec 2007 16:25:53 -0800 (PST)
Subject: very puzzling doctest behaviour
Message-ID: <9b580ef0-ee64-4b40-b419-6cddfd29888f@x69g2000hsx.googlegroups.com>

Hi everyone,

I've run into a very puzzling doctest behaviour - I'm trying to narrow
down the case of it but I'm dealing with multiple files being imported
for one of the case and I have not, so far, created a simple example.
However, just in case someone had run into something similar, I
thought I would ask.

I am using the doctest.testfile() interface to load up tests that
resides in a text file.  Here's a description of the puzzling feature.

==== file 1: all tests pass ====
title
  >>> print "<"
  <
  >>> import module_a
  >>> print "<"
  <
========================

So far, nothing surprising...

==== file 2: we have a failure ====
title
  >>> print "<"
  <
  >>> import module_a
  >>> print "<"
  <

+ 400 lines of text and further tests
========================
The second expected "<" fails; instead, we get "<"

==== file 3: all tests pass ====
title
  >>> print "<"
  <
  >>> import module_a
  >>> print "<"
  <

+ 400 lines of text and further tests
========================

Upon further inspection, I find in module_a that, if I comment out a
line like
import module_b
then, tests in file 2 pass again.   So, I figure the problem is in
module_b.
I then did

==== file 4: one failure ====
title
  >>> print "<"
  <
  >>> import module_b
  >>> print "<"
  <

+ 400 lines of text and further tests
========================

Again, this can be "fixed" by changing the expected output of the
second test

==== file 5: no failure ====
title
  >>> print "<"
  <
  >>> import module_b
  >>> print "<"
  <

+ 400 lines of text and further tests
========================

As mentioned, I have not succeeded in narrowing it down further.
However, has anyone observed such a behaviour of doctests before?

Andr?

From jyoung79 at kc.rr.com  Sun Dec  9 17:25:00 2007
From: jyoung79 at kc.rr.com (jyoung79 at kc.rr.com)
Date: Sun, 9 Dec 2007 16:25:00 -0600
Subject: changing fonts?
Message-ID: <14036725.144641197239100487.JavaMail.root@hrndva-web02-z01>

Hi Doug,

> I'm not *that* familiar with the Terminal program on OS/X, but regardless
> perhaps I can point out a possibly useful path to explore...

Wow!!  Thanks for all this info!!  This is some good stuff!!!  :-)

Well, I got to experimenting with a lot of different stuff, as well as doing a lot
of research on the net, and I think I've found what I was looking for.  It's not
perfect, but I'm thrilled I was able to do this!  I never could find anything on
changing the actual font (or character set) on-line, and looking through the
man pages I couldn't figure out if it was possible there either, although I'm
still new to this stuff so a lot of it could just be my ignorance.

I took Greg's idea and found this web-site:

http://www.unicode.org/charts/PDF/U0370.pdf

which gave me all the unicode characters for the Greek font.  I wrote a simple Python script to test this (only on Mac OS X 10.5 at the moment):

----------
import os

os.system("clear")
print '\033[36m', u'\u03B1\u03C1\u03C4\u03BF\u03C2', '\033[37m', 'This is
the Greek word for "Bread"', '\033[0m'
----------

As you can see, I also added some escape sequences to color the text in the
Terminal window as well.  And it works great!!  Note that I have Terminal
set up with the 'Monaco' font.

Thanks again, Greg and Doug, for your incredible help of not only steering
me in the right direction, but also teaching me new techniques which are
definitely going to come in handy!  :-)

Jay

From igor.tatarinov at gmail.com  Thu Dec 13 17:53:03 2007
From: igor.tatarinov at gmail.com (igor.tatarinov at gmail.com)
Date: Thu, 13 Dec 2007 14:53:03 -0800 (PST)
Subject: python vs perl performance test
References: <3b1cef63-f1dc-466c-bf8c-7613fb4b0c3f@a35g2000prf.googlegroups.com>

Message-ID: <43f502fd-1e97-4ee9-b42d-d75151822345@s19g2000prg.googlegroups.com>

On Dec 13, 1:23 pm, Jakub Stolarski  wrote:
> If all you need is the result here's simpler and more efficient code:
>
> from random import randrange
> sum = 100 * randrange(128)
> print "Sum is ", sum
>
> And the same in perl:
>
> my $sum = 100 * int(rand(128));
> print "Sum is $sum\n";
>
> If you really want compare performance then look at Computer Language
> Benchmarks Game:http://shootout.alioth.debian.org/gp4/benchmark.php?test=all?=pyt...

Sorry, this wasn't meant to be a benchmark of any kind and I don't
care about the results of the program. It was just an exercise to
figure out why the verbatim translation was so slow. It looks like
Python's randrange() is very slow. random() is much faster but then I
have to use int(N*random()) to get an integer, which is pretty slow
too.

Initially, I thought the difference was due to Python's slicing
implementation that doesn't seem to be the case: with fixed arguments
Perl's substr() and Python's slicing seem to have identical
performance.

From bdesth.quelquechose at free.quelquepart.fr  Sat Dec  8 13:44:18 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Sat, 08 Dec 2007 19:44:18 +0100
Subject: a Python person's experience with Ruby
In-Reply-To: 
References: <17975.12459.qm@web33510.mail.mud.yahoo.com>

Message-ID: <475ae612$0$645$426a34cc@news.free.fr>

Colin J. Williams a ?crit :
> Steve Howell wrote:>
> Thanks for the interesting comparison.
> 
> [snip]
> 
>>   3) I actually like being able to omit parentheses in
>> method definitions and method calls.  In Ruby you can
>> express "add(3,5,7)" as both "add(3,5,7)" and "add 3,
>> 5, 7."  The latter syntax is obviously more error
>> prone, but I don't think I've ever actually gotten bit
>> by it, and the code appears more clean to me.
>>
> [snip]
> 
> I'm not sure that I like add 3, 5, 7
> 
> but it would be nice to be able to drop the parentheses
> when no argument is required.
> 
> Thus:         close;
> could replace close();

This just could not work given Python's object model. The parens 
actually *are* the call operator.

From bj_666 at gmx.net  Wed Dec 12 02:46:35 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 12 Dec 2007 07:46:35 GMT
Subject: Text widget updates only after calling method exits (threading 
	issue?)
References: 
Message-ID: <5s9hurF1810imU2@mid.uni-berlin.de>

On Tue, 11 Dec 2007 17:58:37 -0800, mariox19 wrote:

> If I am supposed to send messages to Tkinter objects only from the
> main thread, how can I get the letters to appear 1 per second?

Take a look at the `after()` method on widgets.

Ciao,
	Marc 'BlackJack' Rintsch

From xkenneth at gmail.com  Fri Dec  7 17:37:29 2007
From: xkenneth at gmail.com (xkenneth)
Date: Fri, 7 Dec 2007 14:37:29 -0800 (PST)
Subject: Securely distributing python source code as an application?
Message-ID: <7489fd22-e2dd-44b8-a35b-e2858fa36d32@b1g2000pra.googlegroups.com>

Hi All,

     I'll shortly be distributing a number of python applications that
use proprietary. The software is part of a much larger system and it
will need to be distributed securely. How can i achieve this?

Regards,
Ken

From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Fri Dec 21 08:14:45 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Fri, 21 Dec 2007 14:14:45 +0100
Subject: Extract a number from a complicated string
In-Reply-To: <5665e3d2-4f98-4b65-b396-0ec228657413@l1g2000hsa.googlegroups.com>
References: <5665e3d2-4f98-4b65-b396-0ec228657413@l1g2000hsa.googlegroups.com>
Message-ID: <476bbc02$0$3900$426a34cc@news.free.fr>

Horacius ReX a ?crit :
> Hi,
> 
> I have to read some data from a file, and on each block it always
> appears the followng string; xyz.vs.1-81_1 . It appears a lot of time
> with different numbers like;
> 
> xyz.vs.1-81_1
> xyz.vs.1-1234_1
> xyz.vs.1-56431_1
> 
> and so on
> 
> My problem is that I need to extract from this string the number. For
> instance in xyz.vs.1-81_1 I have to extract the number 81, and in
> xyz.vs.1-1234_1 I need to get the number 1234.
> 
> What is the easiest way of doing this ?

Not necessarily the "easiest", but:

>>> data = ['xyz.vs.1-81_1', 'xyz.vs.1-1234_1', 'xyz.vs.1-56431_1']
>>> for d in data:
...     print d, ":", d.split('.')[2].split('-')[1].split('_')[0]
...
xyz.vs.1-81_1 : 81
xyz.vs.1-1234_1 : 1234
xyz.vs.1-56431_1 : 56431

From yantao at telus.com  Wed Dec 26 18:22:06 2007
From: yantao at telus.com (Peter Pei)
Date: Wed, 26 Dec 2007 23:22:06 GMT
Subject: save gb-2312 web page in a .html file
In-Reply-To: 
References: 

Message-ID: 

You must be right, since I tried one page and it worked. But there is 
something wrong with this particular page: 
http://overseas.btchina.net/?categoryid=-1. When I open the saved file (with 
IE7), it is all messed up.

    url = 'http://overseas.btchina.net/?categoryid=-1'
    headers = { 'User-Agent' : 'Mozilla/4.0 (compatible; MSIE 5.5; Windows 
NT)' }
    req = urllib2.Request(url, None, headers)
    page = urllib2.urlopen(req).read()

    htmlfile = open('btchina.html','w')
    htmlfile.write(page)
    htmlfile.close() 

From chris.monsanto at gmail.com  Sun Dec  9 22:29:23 2007
From: chris.monsanto at gmail.com (Chris M)
Date: Sun, 9 Dec 2007 19:29:23 -0800 (PST)
Subject: Is a "real" C-Python possible?
References:  
	<7tOdnRb-5fMW_MHanZ2dnUVZ_tmhnZ2d@comcast.com>

Message-ID: <072ae5ae-7e28-4fa2-b194-dbd9f9c4cba9@i29g2000prf.googlegroups.com>

On Dec 9, 10:04 pm, Paul McGuire  wrote:
> On Dec 9, 6:07 pm, "Jack"  wrote:
>
> > Plus, Psyco is not the
> > main stream and has stopped development.
>
> 
>
> What makes you think it has stopped development?  I just swung by the
> SF project page, and its most recent news post was just 2 months ago.
>
> Psyco may not be in the standard Python distribution, but it is
> definitely a fixture of the Python landscape, which is about as close
> to main stream as you can get.
>
> -- Paul

Maybe because of this line:

"Psyco is a reasonably complete project. I will not continue to
develop it beyond making sure it works with future versions of Python.
My plans for 2006 are to port the techniques implemented in Psyco to
PyPy. PyPy will allow us to build a more flexible JIT specializer,
easier to experiment with, and without the overhead of having to keep
in sync with the evolutions of the Python language."

From beijingjing at gmail.com  Wed Dec  5 13:58:00 2007
From: beijingjing at gmail.com (beijingjing at gmail.com)
Date: Wed, 5 Dec 2007 10:58:00 -0800 (PST)
Subject: Welcome to us the website
Message-ID: 

Madam/Dear Sir
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electronic product and  equipment such as Digital Cameras, Mobile
Phone, Laptops, Mp4, GPS, Digital Video and bulk  product such as LCD
TV, Motorcycles, Binoculars and Musical Instruments and so on with
various  international famous brand.
We offer our customer good valuable product with very compteted price
because we have advanced  goods circulating solution and supporter. We
have our own warhouse and stores, our clients all  over the world.
When you choose our products you will also enjoy our fast delivery.
We appreciate all of customers' comments and will continue to improve
our service in order to   satisfied our old and new customer. During
Christmas and New Year Holiday we have a various  promtotion plan. It
will be out soon. Please welcome to visit our websit www.bdaopy.com to
check  your voucher.
Thanks
MSN:bdaopy at hotmail.com  E-mail:bdaopy at hotmail.com

From paddy3118 at googlemail.com  Sun Dec  9 05:55:37 2007
From: paddy3118 at googlemail.com (Paddy)
Date: Sun, 9 Dec 2007 02:55:37 -0800 (PST)
Subject: Recommendations for writing a user guide with examples?
References: 
Message-ID: <3aaf641b-4f83-4895-aeae-10138d4e6d19@e67g2000hsc.googlegroups.com>

On Dec 8, 9:22 pm, Neal Becker  wrote:
> I'm looking for recommendations for writing a user manual.  It will need
> lots of examples of command line inputs and terminal outputs.
>
> I'd like to minimize the effort to integrate the terminal input/output into
> my document.  I have lots of experience with latex, but I wonder if there
> may be some other choices.  Maybe docutils, pydoc, something else?  The
> code I'm documenting is written in python, if that matters.

Doctest and restructuredtext.
http://docutils.sourceforge.net/docs/user/rst/quickref.html

- Paddy.

From horpner at yahoo.com  Fri Dec 14 16:15:44 2007
From: horpner at yahoo.com (Neil Cerutti)
Date: Fri, 14 Dec 2007 21:15:44 GMT
Subject: container.___le___ can use only <=?
Message-ID: 

When implementing the rich comparison operators for some sort of
container, it's tempting to save code by doing something like:

 class LarchTree:
   ...
   def __gt__(self, other):
     # A lot of code to traverse the tree
   def __le__(self):
     return not self > other

However, if I'm thinking correctly, this is a bad idea. The
reasoning being that > and <= are not required to be each others
opposite for arbitrary value types, and may not even both be
supplied by the contained objects.

If a LarchTree user stores objects that don't support __gt__,
will he have a legitimate complaint when using LarchTree.__le__
results in an attribute error?

-- 
Neil Cerutti

From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Tue Dec  4 11:04:36 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Tue, 04 Dec 2007 17:04:36 +0100
Subject: read lines
In-Reply-To: 
References: 		<47555ab4$0$31357$426a74cc@news.free.fr>

Message-ID: <47557a93$0$5448$426a74cc@news.free.fr>

Peter Otten a ?crit :
> Bruno Desthuilliers wrote:
> 
>> # You don't need to read the whole file in memory
> 
>> lines1, lines2 = tee(infile)
>> print min(extract_numbers(lines1)), max(extract_numbers(lines2))
> 
> tee() internally maintains a list of items that were seen by
> one but not all of the iterators returned. Therefore after calling min()
> and before calling max() you have a list of one float per line in memory
> which is quite close conceptually to reading the whole file in memory.
> 
> If you want to use memory efficiently, stick with the for-loop.

Indeed - I should have specified that the second version was not 
necesseraly better wrt/ either perfs and/or resources usage. Thanks for 
having made this point clear.

From paul.nospam at rudin.co.uk  Wed Dec 12 13:03:18 2007
From: paul.nospam at rudin.co.uk (Paul Rudin)
Date: Wed, 12 Dec 2007 18:03:18 +0000
Subject: Newbie NameError problem
References: 
	<877ijj5018.fsf@rudin.co.uk>
	<9cb09020-247f-48a6-a0f9-9742e7c84358@x69g2000hsx.googlegroups.com>
Message-ID: <873au74wpl.fsf@rudin.co.uk>

cokofreedom at gmail.com writes:

> On Dec 12, 5:51 pm, Paul Rudin  wrote:
>> MartinRineh... at gmail.com writes:
>> > I don't understand what I don't understand in the following:
>>
>> I haven't tried to understand what your code is doing - but the
>> NameError arises because you try to use Loc before its definition. Put
>> the definition first and the error should go away.
>
> Class Loc must be placed ABOVE the code that uses it.

Isn't that what I said?

From newsgroups at debain.org  Mon Dec  3 05:26:50 2007
From: newsgroups at debain.org (Samuel)
Date: Mon, 3 Dec 2007 10:26:50 +0000 (UTC)
Subject: Generating API documentation as a textfile
Message-ID: 

Does anyone know an easy way to extract the API documentation that is 
embedded into a Python file as a text file?

-Samuel

From sjmachin at lexicon.net  Sat Dec 15 23:24:29 2007
From: sjmachin at lexicon.net (John Machin)
Date: Sat, 15 Dec 2007 20:24:29 -0800 (PST)
Subject: Inter-process communication, how?
References: 
	<13m90jvnpbi6m41@corp.supernews.com>

Message-ID: 

On Dec 16, 2:34 pm, ecir.h... at gmail.com wrote:
> >         If it is a one-shot (spawn sub, wait, retrieve results) you could
> > generate a temporary file name in the parent, pass that name to the sub
> > when invoking it, wait for the sub to complete (giving you a status
> > code) and then read the result the sub has written to the file.
>
> Yes, it's once shot. But how do I pass "that name"?
> From all the arguments of class Popen (http://docs.python.org/lib/
> node529.html) perhaps I could use "env" only. Or am I wrong?

Yes. Consider this: If you were to run your calculation script from
the shell prompt [strongly recommended during testing], how would you
tell it the name of the file? Now look at the docs again.
>
> PS: both with mmpam and temp file you probably meant that I should
> hard code some as-weirdest-filename-as-possible two both programs but
> what if I run the computation several times?

That's mmap, not mmpam. No, Dennis didn't mean that you should hard
code a filename. Have a look at the tempfile module.

>
> And thanks for reply!
>
>
>
> >         Or, you could have parent and sub both mmap the same "file",
> > essentially passing data in memory unless it becomes too large and pages
> > out to swap disk. You might even be able to do bidirectional and dynamic
> > updates (rather than waiting for the sub to exit)... Define, say, an
> > epoch count for each process -- these would be the first two words of
> > the mmap file
>
> > |p-epoch|s-epoch|n-words of p-data (fixed constant known to both)|n-words of s-data|
>
> > periodically the parent would examine the value of s-epoch, and if it
> > has changed, read the s-data.. (both sides write the data first, then
> > update the epoch count). When the epoch stays the same and two
> > consecutive reads of the data match, you have stable data (so the reads
> > should occur more often than updates) and can process the data
> > transferred.
>
> >         OR, you could have the parent open a TCP/IP socket as a server, and
> > pass the socket port number to the sub. The sub would then connect to
> > that port and write the data. For bidirectional you could pass the
> > parent port, and the sub's first action is to connect and pass a port
> > that it will be monitoring.
>
> >         On a VMS system, the processes would connect to named "mailboxes"
> > and use QIO operations to pass data between them.
>
> >         On an Amiga you'd use "message ports" (which operated somewhat
> > similar to VMS mailboxes except that mailboxes had an independent
> > existence, multiple processes can read or write to them -- message ports
> > were readable by the creating process, but could have messages sent from
> > anywhere; typically passing the message port [address of a linked list
> > of messages] for replies). Or a higher level message port: an ARexx
> > port.
>
> >         On a Windows NT class system, the win32 extensions allow access to
> > Windows Named Pipes... Or maybe the Windows clipboard could be used...
> > --
> >         Wulfraed        Dennis Lee Bieber               KD6MOG
> >         wlfr... at ix.netcom.com             wulfr... at bestiaria.com
> >                 HTTP://wlfraed.home.netcom.com/
> >         (Bestiaria Support Staff:               web-a... at bestiaria.com)
> >                 HTTP://www.bestiaria.com/

From deets at nospam.web.de  Mon Dec  3 05:17:06 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Mon, 03 Dec 2007 11:17:06 +0100
Subject: Thread
References: 
Message-ID: <5ri3d2F14hnb3U2@mid.uni-berlin.de>

Gianmaria Iaculo - NVENTA wrote:

> 
> Hi all,
> i'm using python 1.5.2.
> 
> Is it possible to use the Thread module? I need it for the Timer library.

According to http://www.python.org/doc/1.5.2/lib/lib.html it's there. Why
don't you just import it and try? Would have cost less time than posting
here & waiting for an answer (This is not meant to be discouraging you
posting here - just showing you that in Python, trying first is often
easier than "gathering intelligence" first)

Diez

From gagsl-py2 at yahoo.com.ar  Sun Dec 30 09:57:26 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Sun, 30 Dec 2007 12:57:26 -0200
Subject: What is the best way to do dynamic imports ?
References: 
Message-ID: 

En Sun, 30 Dec 2007 12:24:53 -0200,  escribi?:

> I'm playing with some mod_python and web development. And in me code I
> need to do som dynamic imports.
> Right now I just do a:
>
> exec 'import '+some_modulename
>
> But it seems to easy, is there a "dark side" to doing it this way?
> (memory use,processing ,etc)

Use __import__, specially if some_modulename comes from the outside.
What if some_modulename contains "modulename\nsome_nasty_function_call()"

> And have to I check if the modul is already loaded?

Not needed; the standard import machinery already does that.

> Another thing is how to call my dynamic imported moduls.
> Now I use exec (as with my modules), like this:
>
> exec 'newclass = '+classname+'()'
> newclass.somefunction()
>
> Again it seems to easy. Is there a better/proper way to do it?

Use getattr to obtain the desired class from the containing module, then  
use it as any other class:
the_module = __import__(some_modulename)
the_class = getattr(the_module, classname)
o = the_class()
o.somefunction()

Never use exec/eval and friends - and never ever use them in a web  
application!

> Do anybody now a good howto or tutorial to this?

No... what do you want covered?

> Many thanks and hope you all have a happy new year :-)

Thanks, and a happy new year for you too!

-- 
Gabriel Genellina

From stanc at al.com.au  Thu Dec 13 00:11:41 2007
From: stanc at al.com.au (Astan Chee)
Date: Thu, 13 Dec 2007 16:11:41 +1100
Subject: python "sounds-like" module
In-Reply-To: 
References: 

Message-ID: <4760BF0D.2080907@al.com.au>

John Machin wrote:
> Someone is sure to trot out the hoary old soundex ... believe me, it's
> teh suxxor.
>
>   
Plus febrl has soundex in it (as well as several modified versions of 
it) among other things. Looks like this is what Im looking for.
Thanks!
Astan

From sndive at gmail.com  Thu Dec  6 21:22:20 2007
From: sndive at gmail.com (sndive at gmail.com)
Date: Thu, 6 Dec 2007 18:22:20 -0800 (PST)
Subject: PyImport_ImportModule("foo.bar")
Message-ID: <3404abed-6af0-48be-8d6a-a2457c729b52@x69g2000hsx.googlegroups.com>

I'm trying to import foo.bar in order not to add every single
directory with python files to the search path.
i immediately follow the import with the PyModule_AddObject call to
put the imported module
to __main__ module
but later on  PyEval_EvalCode on Py_CompileString compiled code
"foo.bar.baz()" and dictionary of __main__
used for global and local context does not work (I get NameError).

is there an equivalent of import foo.bar as Bar; in c api
or should i call into submodules differently?

From trekker182 at comcast.net  Sun Dec  9 12:48:04 2007
From: trekker182 at comcast.net (Shawn Minisall)
Date: Sun, 09 Dec 2007 12:48:04 -0500
Subject: a way to keep track of # of clicks
Message-ID: <475C2A54.7000400@comcast.net>

Is there a way to keep track of the number of times someone clicks on a 
menu item in a prorgam?  What I want to do is make the rectangle 
disappear after they click on it at the main menu 3 times so visually 
show them they can't do it any longer.

Since I appended the button to a main menu list, I would think undrawing 
it would have something like pop.mainMenuList[8] in it after they click 
on it three times.  (not in succession, after it takes them to the 
questions screen and then back to the main menu)

Any suggestions?

thx

From tjreedy at udel.edu  Sat Dec  8 16:25:04 2007
From: tjreedy at udel.edu (Terry Reedy)
Date: Sat, 8 Dec 2007 16:25:04 -0500
Subject: Newbie edit/compile/run cycle question
References: <1f995159-fc02-4cd1-aa99-7f8500eeaeec@b1g2000pra.googlegroups.com>
Message-ID: 

 wrote in message 
news:1f995159-fc02-4cd1-aa99-7f8500eeaeec at b1g2000pra.googlegroups.com...
| What don't I know that I should know to just edit/run, preferably at
| the tap of a function key?

In IDLE, which come with Python, it is  F5. (See Options/General/Autosave)
Startup is about .1 sec since the program runs in a window of the same 
interpreter.
Stand-alone editors require longer to start a separate interpreter,
but then you have a clean new interpreter that is not running TK or 
anything else.
Your choice.  Have fun.

If you run a separate interpreter, you might benefit from also having an 
interactive interpreter window open in which to run quick experiments to 
check names or syntax you are not sure of.  This comes with running idle.

tjr

From timr at probo.com  Sun Dec  9 02:24:16 2007
From: timr at probo.com (Tim Roberts)
Date: Sun, 09 Dec 2007 07:24:16 GMT
Subject: how to convert 3 byte to float
References: <475a7336$0$13116$9b4e6d93@newsspool2.arcor-online.net>
	<5rvc6hF17032iU1@mid.individual.net>
	<475a8591$0$17533$9b4e6d93@newsspool4.arcor-online.net>
Message-ID: 

"Mario M. Mueller"  wrote:

>Bjoern Schliessmann wrote:
>
>[...]
>> BTW, who in his mind designs three byte floats? Memory isn't that
>> expensive anymore. Even C bool is four bytes long.
>
>It's output of a digitizer (but not that old). I was also wondering about
>the reason for this limitation (maybe the design is ~20 years old).

The IEEE-754 standard was adopted in 1985.  Before that (and after that,
too), many people used whatever bit layout they wanted for floating point
numbers.
-- 
Tim Roberts, timr at probo.com
Providenza & Boekelheide, Inc.

From lars at larsjohansen.org  Fri Dec  7 03:37:22 2007
From: lars at larsjohansen.org (Lars Johansen)
Date: Fri, 07 Dec 2007 09:37:22 +0100
Subject: Any simpler way to do this
Message-ID: <1197016642.2753.4.camel@lars-laptop.ez.no>

I have a function that looks like this:

def Chooser(color):

        if color == "RED":
                x = term.RED
        elif color == "BLUE":
                x = term.BLUE
        elif color == "GREEN":
                x = term.GREEN
        elif color == "YELLOW":
                x = term.YELLOW
        elif color == "CYAN":
                x = term.CYAN
        elif color == "MAGENTA":
                x = term.MAGENTA
        return x

Wouldn there been easier if I could just skip all the "*if's" and just
"return term.color", however this gives a syntax error, are there any
clever way to do this ?
-- 
Lars Johansen 

From martin at v.loewis.de  Wed Dec 19 04:55:01 2007
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Wed, 19 Dec 2007 10:55:01 +0100
Subject: Static linking of python and pyqt
In-Reply-To: 
References: 
Message-ID: <4768EA75.7050109@v.loewis.de>

> I'm trying to link python statically with qt and pyqt. I've tried this in 
> several ways but never succeeded. At the moment the final make runs without 
> errors but I get import errors when accessing pyqt.
> How can I solve this problem?

You'll need to include QtCore into Modules/config.c, preferably by
adding it to Modules/Setup.local.

HTH,
Martin

From nytrokiss at gmail.com  Thu Dec 27 17:48:03 2007
From: nytrokiss at gmail.com (James Matthews)
Date: Thu, 27 Dec 2007 23:48:03 +0100
Subject: Cheat sheet
In-Reply-To: <13n886h5u1f2913@corp.supernews.com>
References: 
	<13n886h5u1f2913@corp.supernews.com>
Message-ID: <8a6b8e350712271448x1a8b0f9cne4e6c4e581ebe8a2@mail.gmail.com>

Looks good thanks!

On Dec 27, 2007 11:06 PM, Scott David Daniels  wrote:

> Riccardo T. wrote:
> > I wrote a little cheat sheet for this wonderful language, but because of
> > my still little experience with it, I would like to have a feedback
> > Could you have a look at it and tell me what do you think about, please?
> >
> > http://greyfox.imente.org/index.php?id=73
> >
> > --
> > GreyFox
>
> [in the .png]
>  > ...
>  > Callable types
>  >    ...
>  >    User-definet methods
>
> I personally prefer "User-defined methods"
>
>  >    ...
>  >    Class instances
> I'd try:
>      Class instances with a __call__ method.
>
>  > ...
>  > Classes
>  > Classes Instances
>
> This probably wants to be
>   Class Instances
>
> "file" objects are generally supposed to be built with the
> open function, not instantiated as shown.
> Also note iterating on a file gets the lines.
>
> Do you know about seq[i:] and seq[::-1]?
>
> --Scott David Daniels
> Scott.Daniels at Acm.Org
> --
> http://mail.python.org/mailman/listinfo/python-list
>

-- 
http://search.goldwatches.com/?Search=Movado+Watches
http://www.jewelerslounge.com
http://www.goldwatches.com
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From digitnctu at gmail.com  Thu Dec 27 09:05:16 2007
From: digitnctu at gmail.com (digitnctu at gmail.com)
Date: Thu, 27 Dec 2007 06:05:16 -0800 (PST)
Subject: interactive mode in python with ctypes???
References: <09cb597a-6674-40b8-a93f-aeecbb38a69b@d21g2000prf.googlegroups.com>

Message-ID: <8d1e011e-54d7-48ea-a169-43ce2745ced7@l6g2000prm.googlegroups.com>

On 12??27??, ????4?r40??, "Gabriel Genellina" 
wrote:
> En Wed, 26 Dec 2007 12:57:44 -0300,  escribi??:
>
> >      libdll.dll is a third-party library. The below code segment will
> > run well under the batch mode(ie. python test.py 11060)
> >      but when I type sequencially it doesn't work as usual.  Can any
> > give me a hand??
>
> Define "doesn't work as usual"; at least describe what actually happens
> and what you expected to happen instead. If you get an exception, post the
> full traceback.
>
> >       run(string.atoi(sys.argv[1]))
>
> string.atoi is deprecated eons ago; use int() instead
>
> --
> Gabriel Genellina

"doesn't work" means there is no result without exception. The python
interpretter still run without complains; but when running under batch
mode it run as the expectation.  Are there difference for python
interpretter between batch mode and interactive mode ?

 Thanks for Gabriel.

From sjmachin at lexicon.net  Sat Dec  1 17:31:56 2007
From: sjmachin at lexicon.net (John Machin)
Date: Sat, 1 Dec 2007 14:31:56 -0800 (PST)
Subject: "Python" is not a good name, should rename to "Athon"
References: 
	<78bdd499-a263-4c68-8e43-e3e59b111c7e@a39g2000pre.googlegroups.com> 
	<5rcq90F13re18U1@mid.individual.net>

	<2bd39781-94e2-4d3d-b185-47a247d3acc2@d27g2000prf.googlegroups.com>
Message-ID: <20a6e1c5-a865-45f4-b511-59ebd734ac74@e10g2000prf.googlegroups.com>

On Dec 2, 8:40 am, "Russ P."  wrote:
>
> None. None of them are good names by my criteria. But then, a name is
> only a name. One of the few names I like is Pascal, because he was a
> great mathematician and scientist.
>
> After thinking about it a bit, here are examples of what I would
> consider a good name for a programming language:
>
> Newton#
> Newton*
> Newton+
>
> Newton was a great scientist, and his name is easy to spell and
> pronounce.

Should be, but a large proportion of the population pronounce it so
that it rhymes with "hootin" as in "hootin n hollerin" :-)

From arnodel at googlemail.com  Sun Dec  9 08:39:27 2007
From: arnodel at googlemail.com (Arnaud Delobelle)
Date: Sun, 9 Dec 2007 05:39:27 -0800 (PST)
Subject: Newbie edit/compile/run cycle question
References: <1f995159-fc02-4cd1-aa99-7f8500eeaeec@b1g2000pra.googlegroups.com>

Message-ID: 

On Dec 9, 1:26 pm, MartinRineh... at gmail.com wrote:
> Thanks for all the help. Thought I'd spend my newbie days right in the
> Python shell (there's lots to test when you're just starting) but I
> guess that's not going to happen.

It would be a shame not to use the shell.

> Everyone told me to get out of the Python shell, one way or another.
> OK. But this means that every execution must first load Python, then
> import my stuff. Import becoming a NOP after first use in the shell is
> a six-legged feature, at best.

Don't jump to conclusions too early.

In the shell, type 'help(reload)'.  This might help.

--
Arnaud

From bignose+hates-spam at benfinney.id.au  Tue Dec 11 05:49:11 2007
From: bignose+hates-spam at benfinney.id.au (Ben Finney)
Date: Tue, 11 Dec 2007 21:49:11 +1100
Subject: Job Offer: Python Ninja or Pirate!
References: 
Message-ID: <87hcip5wwo.fsf@benfinney.id.au>

"jay at etsy.com"  writes:

> Just a few months ago, we found a few amazingly talented ninjas and
> even a few swarthy pirates. The team is doing wonderfully, and we're
> hoping to add a few more adventure-loving souls to our ranks.

For job postings, please don't use the mailing lsits. Instead, make
use of the Python Job Board .

-- 
 \      "Remember:  every member of your 'target audience' also owns a |
  `\        broadcasting station. These 'targets' can shoot back."  -- |
_o__)       Michael Rathbun to advertisers, news.admin.net-abuse.email |
Ben Finney

From deets at nospam.web.de  Mon Dec  3 17:44:10 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Mon, 03 Dec 2007 23:44:10 +0100
Subject: "Python" is not a good name, should rename to "Athon"
In-Reply-To: 
References: 
	<47546949$0$31456$426a74cc@news.free.fr>

Message-ID: <5rjf5rF155hc9U1@mid.uni-berlin.de>

Russ P. schrieb:
> On Dec 3, 1:58 pm, "Dan Upton"  wrote:
> 
>> ...and thus, maybe the joke is on you?  Just to play devil's advocate...
> 
> Yes, the joke *is* on me -- every time I have to explain to someone
> why I am using this funny-sounding language. That's the point.

Yeah, but today you drank Java, your favourite Coffe blend, while 
telling your best buddy you plan to get Groovy tonight with Ada, buying 
her a Ruby collier & explaining her some Basic concepts of computer 
science - because that always makes her express her astonishment about 
your mad coding skillz with that cute little Lisp she has.

Just don't forget to not use a Clipper in front of her again. She only 
forgave you for that because you tooke her to the Eiffel Tower, meeting 
Pascal there. He just got his degree from Haskell university - which is 
a major break-through, because all of his professors working on a Scheme 
to expel him from there. But he showed it to these little Brainfucks.

Sorry, but if people are joking on you - there must be other reasons for 
that than a name of a programming language. And I'm beginning to think I 
know it....

Diez

From steve at REMOVE-THIS-cybersource.com.au  Sat Dec 29 19:37:32 2007
From: steve at REMOVE-THIS-cybersource.com.au (Steven D'Aprano)
Date: Sun, 30 Dec 2007 00:37:32 -0000
Subject: Tab indentions on different platforms?
References: <14a26d3f-94de-4887-b3f4-d837a2723f35@21g2000hsj.googlegroups.com>

Message-ID: <13ndq2ca87epk79@corp.supernews.com>

On Sat, 29 Dec 2007 15:29:25 +0000, Thorsten Kampe wrote:

> I'd personally go for spaces because:
> 
> 1. I don't like things I cannot see (control characters)

You can see spaces but not tabs? Your editor is pretty weird. In all the 
editors I've every used, both spaces and tabs show up as empty white 
space. (Or coloured space if I set the editor to use a coloured 
background.)

> 2. I never had problems with spaces but plenty with tabs

Periodically, I ask on this list what problems people have with tabs. 
(I'm fully aware that mixing tabs and spaces is a Bad Thing.) I've had 
little luck getting any answer except "Tabs are bad, m'kay?".

I'm only aware of two problems that some people run into due to the 
consistent use of tabs rather than spaces.

* Some news clients don't display tabs correctly, thus making it hard to 
copy and paste code direct out of the news reader into your source;

(But of course if you copy code using spaces, and the number of space 
characters used per indent level doesn't match your source code, you'll 
have problems too.)

* Some applications "helpfully" convert tabs into spaces, thus meaning 
that when copy code from them, you end up with spaces instead of tabs.

What problems have you had with tabs that aren't related to buggy 
applications or users that mix tabs and spaces?

-- 
Steven

From cwitts at gmail.com  Tue Dec 11 13:13:19 2007
From: cwitts at gmail.com (Chris)
Date: Tue, 11 Dec 2007 10:13:19 -0800 (PST)
Subject: problem parsing lines in a file
References: 
Message-ID: <6c45d9a9-d724-4bfa-bcab-c706d5461ca0@o6g2000hsd.googlegroups.com>

On Dec 11, 7:25 pm, barronmo  wrote:
> I'm having difficulty getting the following code to work.  All I want
> to do is remove the '0:00:00' from the end of each line.  Here is part
> of the original file:
>
> 3,3,"Dyspepsia NOS",9/12/2003 0:00:00
> 4,3,"OA of lower leg",9/12/2003 0:00:00
> 5,4,"Cholera NOS",9/12/2003 0:00:00
> 6,4,"Open wound of ear NEC*",9/12/2003 0:00:00
> 7,4,"Migraine with aura",9/12/2003 0:00:00
> 8,6,"HTN [Hypertension]",10/15/2003 0:00:00
> 10,3,"Imerslund syndrome",10/27/2003 0:00:00
> 12,4,"Juvenile neurosyphilis",11/4/2003 0:00:00
> 13,4,"Benign paroxysmal positional nystagmus",11/4/2003 0:00:00
> 14,3,"Salmonella infection, unspecified",11/7/2003 0:00:00
> 20,3,"Bubonic plague",11/11/2003 0:00:00
>
> output = open('my/path/ProblemListFixed.txt', 'w')
> for line in open('my/path/ProblemList.txt', 'r'):
>      newline = line.rstrip('0:00:00')
>      output.write(newline)
> output.close()
>
> This result is a copy of "ProblemList" without any changes made.  What
> am I doing wrong?  Thanks for any help.
>
> Mike

rstrip() won't do what you think it should do.
you could either use .replace('0:00:00','') directly on the input
string or if it might occur in one of the other elements as well then
just split the line on delimeters.
In the first case you can do.

for line in input_file:
    output_file.write( line.replace('0:00:00','') )

in the latter rather.

for line in input_file:
    tmp = line.split( ',' )
    tmp[3] = tmp[3].replace('0:00:00')
    output_file.write( ','.join( tmp ) )

Hope that helps,
Chris

From devicerandom at gmail.com  Wed Dec 12 10:04:09 2007
From: devicerandom at gmail.com (massimo s.)
Date: Wed, 12 Dec 2007 07:04:09 -0800 (PST)
Subject: Is anyone happy with csv module?
References: <15ab759b-0aec-45dd-88b9-c446c2b7d299@e10g2000prf.googlegroups.com>

Message-ID: <40d6ad04-7ea3-42d5-b10c-3c829779d304@e10g2000prf.googlegroups.com>

On Dec 12, 2:58 pm, Neil Cerutti  wrote:
> On 2007-12-11, massimo s.  wrote:
>
> > Hi,
>
> > I'm struggling to use the python in-built csv module, and I
> > must say I'm less than satisfied. Apart from being rather
> > poorly documented, I find it especially cumbersome to use, and
> > also rather limited. What I dislike more is that it seems
> > working by *rows* instead than by *columns*.
>
> It is very *thoroughly* documented, which is a style that won't
> suit every purpose.
> > So I have some questions:
> > 1) Is there a good tutorial, example collection etc. on the csv
> > module that I'm missing?
>
> Just skip to 9.1.5 Examples, and you'll be on your way.

If by "thoroughly" you mean "it actually describes technically what it
is and does but not how to really do things", yes, it is thoroughly
documented.
The examples section is a joke. It gives good examples for the
simplest usage cases (good), then it almost immediately digs into
details like the Unicode stuff, leaving aside the rest. DictWriter and
DictReader are absent from the examples. And also the Sniffer.

And, as a sidenote, why putting something useful like the unicode
decoder-encoders in the example section instead of inserting them
directly in the library?

I don't want to be mean with the author of csv and its docs. I now
understand there are excellent reasons for csv to be done the way it
is, and it's only my fault if I didn't see that before. I also know
first hand that documenting code is hard and boring stuff. Kudos to
anyone doing that, but in the Example section there is surely room for
improvement. It's probably OK for people doing things row-by-row and
that already know perfectly their way in and out all that, but if this
thread teaches us something, is that the same thing can be used for
vastly different purposes.

I will try to submit a patch to the documentation based on examples
coming from here and what I will learn by digging into csv.

> > 3) In case anyone else is as unhappy as me, and no tutorial
> > etc. enlighten us, and no alternative is present, anyone is
> > interested in an alternative csv module? I'd like to write one
> > if it is the case.
>
> I was intimidated by it at first, implemented my own reader
> (mostly as a fun parsing exercise), used that for a while, and
> then threw it out.
>
> I advise you to spend time staring at the examples, and use the
> simplest example the suits your needs. Also search this archives
> of this group for examples.

OK, thanks!

As for people advicing xlrd/xlrwt: thanks for the useful tip, I didn't
know about it and looks cool, but in this case no way I'm throwing
another dependency to the poor users of my software. Csv module was
good because was built-in.

m.

From mensanator at aol.com  Fri Dec  7 16:17:07 2007
From: mensanator at aol.com (mensanator at aol.com)
Date: Fri, 7 Dec 2007 13:17:07 -0800 (PST)
Subject: Converting Excel time-format (hours since 1.1.1901)
References: <6c5cc79e-a121-45c5-9a97-b8564ca9f3bf@l16g2000hsf.googlegroups.com>
	<716882bb-ab0f-4eb5-b577-1f12372d7b93@w56g2000hsf.googlegroups.com> 

	<6653408b-7b2e-4acb-968a-f06d37ef064e@t47g2000hsc.googlegroups.com>
Message-ID: <93837c98-b7f9-4461-9201-7d73a1470c03@l1g2000hsa.googlegroups.com>

On Dec 7, 9:59?am, Dirk Hagemann  wrote:
> On 7 Dez., 16:50, Dirk Hagemann  wrote:
>
>
>
>
>
> > On 7 Dez., 16:21, Tim Golden  wrote:
>
> > > mensana... at aol.com wrote:
> > > > On Dec 7, 7:20?am, Dirk Hagemann  wrote:
> > > >> Hello,
>
> > > >> From a zone-file of a Microsoft Active Directory integrated DNS server
> > > >> I get the date/time of the dynamic update entries in a format, which
> > > >> is as far as I know the hours since january 1st 1901.
>
> > > If it *is* then the easiest way is this:
>
> > > 
> > > import datetime
> > > print datetime.date (1901, 1, 1) + datetime.timedelta (hours=3566839)
>
> > > 
>
> > > But, as someone pointed out, that puts you somewhere in 2300.
> > > Where are you getting the 1901 from (and the hours, for that
> > > matter). If it's based, as AD dates are, for example, from 1601,
> > > then the calc becomes:
>
> > > 
> > > import datetime
> > > print datetime.date (1601, 1, 1) + datetime.timedelta (hours=3566839)
>
> > > 
>
> > > which looks more realistic. But frankly I'm guessing.
>
> > > TJG
>
> > (3566839/24)/365 = 407 ? - YES I did this calculation too and was
> > surprised. But if you try this out in MS Excel:
> > ?="01.01.1901"+(A1/24-(REST(A1;24)/24))+ZEIT(REST(A1;24);0;0) ?(put
> > 3566839 in field A1 and switch the format of the result-fieldby right-
> > click on it to the
> > date format "14.3.01 13:30")
>
> > and then replace 3566839 by, let's say, "2", Excel calculates the date
> > 01.10.1901 2:00 AM. Try out other values like 5 or 24! So I thought
> > 3566839 represents hours.
>
> > Dirk
>
> Oh - sorry again: in the Excel formula replace also ZEIT with TIME

Also, Excel unformatted dates are DAYS, not hours. And it's
from 1900, not 1901. Hours are always fractional parts:

1/1/01 0:00	367
1/1/01 12:00	367.5

It sure sounds like the number being given you ISN'T the
same as Excel date serial numbers.

From jstroud at mbi.ucla.edu  Fri Dec 21 04:59:57 2007
From: jstroud at mbi.ucla.edu (James Stroud)
Date: Fri, 21 Dec 2007 01:59:57 -0800
Subject: Why does __builtins__ mean different things...
In-Reply-To: 
References: 

Message-ID: 

Erik Max Francis wrote:
> James Stroud wrote:
> 
>> Thank you for your help. I will import the __builtin__ module as you 
>> have suggested--it is what I need.
>>
>> But....what the heck? You mean if I drop an s I get predictable 
>> behavior and if I don't, I get unpredictable behavior?
> 
> You don't get unpredictable behavior, you just get different behavior 
> you didn't expect, which is not the same thing.  Python is a programming 
> language, like any other; randomly dropping letters in names is going to 
> result in bad behavior, so be more careful about it.

Are you responding to some other thread? Its like you read every other 
word and then filled in the rest randomly...

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

http://www.jamesstroud.com

From jeremy at omba.demon.co.uk  Sat Dec  8 21:45:46 2007
From: jeremy at omba.demon.co.uk (Jeremy C B Nicoll)
Date: Sun, 9 Dec 2007 02:45:46 +0000
Subject: Newbie edit/compile/run cycle question
References: 
Message-ID: 

Steve Howell  wrote:

> 
> --- Jeremy C B Nicoll  wrote:

> > What command (in XP) does one need to issue to
> > syntax check a saved python
> > script without running it?
> 
> Perhaps oversimplifying a bit, running "python" does a
> syntax check, and if it passes, moves on the next
> steps of interpretation/execution.

Ah, I've been using IDLE so far (but would probably prefer to write Python
in my normal text editor).  In IDLE Alt-X syntax checks the saved copy of
the file being edited (at least it seems to), and I was wondering how to
replicate that elsewhere.

> > Does a syntax check report all syntax errors or just
> > the first one found? 
> 
> Just the first one.  In practice, you end up fixing
> them one at a time anyway, so this works for me, as
> long as I have a fluid way to call out to python and
> return to the editor.

Yes, I suppose so.

-- 
Jeremy C B Nicoll - my opinions are my own.

From bdesth.quelquechose at free.quelquepart.fr  Fri Dec 28 13:33:00 2007
From: bdesth.quelquechose at free.quelquepart.fr (Bruno Desthuilliers)
Date: Fri, 28 Dec 2007 19:33:00 +0100
Subject: OOP: How to implement listing al 'Employees'.
In-Reply-To: <77fbd06e-4692-4a6c-9251-986f41cae1ee@r60g2000hsc.googlegroups.com>
References: <6a600f6a-76f1-4397-9fc8-6f5bab63913a@f53g2000hsg.googlegroups.com>
	<5tk95uF1dmpvkU1@mid.individual.net>
	<77fbd06e-4692-4a6c-9251-986f41cae1ee@r60g2000hsc.googlegroups.com>
Message-ID: <4775415b$0$19658$426a74cc@news.free.fr>

Petar a ?crit :
> On 28 dec, 13:40, Bjoern Schliessmann  mail-0306.20.chr0n... at spamgourmet.com> wrote:
> 
>>Petar wrote:
>>
>>>What is the better way of doing this? And should a class always
>>>reference only on 'item'?
>>
>>It fully depends on what you want to do in your program. If you just
>>want to have a list of employees, a list or dict will suffice. If
>>you need a full-fledged employee database, an "Employees" class may
>>be a good API.
>>
(snip)
> 
> It's a pure hypothetical question about where to put the function for
> the list of employees when already having a Employee class.

The problem with "pure hypothetical" questions is that they usually have 
no single good answer, and sometimes even no answer at all.

Now since you're talking database, the most common patterns seems to 
have either some YourDomainClassNameHere methods to query instances, or 
some module/singleton object providing such querying interfaces for the 
whole app (or FWIW to provide both, the first calling on the second...).

> Do I make it a method of the class, or do i create a instance of the
> class for every employee (sitting inside a list)?

If you have an Employee class, I don't get how you would avoid creating 
an instance for each and every, well, instance ? Unless you're thinking 
about something like MS "recordsets" ? But then, you don't need any 
domain class at all...

From matiassurdi at gmail.com  Mon Dec 17 12:20:38 2007
From: matiassurdi at gmail.com (Matias Surdi)
Date: Mon, 17 Dec 2007 18:20:38 +0100
Subject: Getting al classes inside a package
Message-ID: 

How can I get all the clasess inside a package (including it subpackages) ?

for example, I have a package with classes A and B and with a subpackage 
wichs has class C.

How can I get a list (and a path) of the classes that exists under the 
root package ?

Thanks a lot!

From duncan.booth at invalid.invalid  Tue Dec 18 13:14:06 2007
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 18 Dec 2007 18:14:06 GMT
Subject: Best idiom to unpack a variable-size sequence
References: <3c91f3c1-3eb0-4aa0-a136-a99ac361f80c@1g2000hsl.googlegroups.com>
Message-ID: 

ram  wrote:

> Here's a little issue I run into more than I like: I often need to
> unpack a sequence that may be too short or too long into a fixed-size
> set of items:
> 
> a, b, c = seq      # when seq = (1, 2, 3, 4, ...) or seq = (1, 2)
> 
> What I usually do is something like this:
> 
>      a, b, c = (list(seq) + [None, None, None])[:3]
> 
> but that just feels rather ugly to me -- is there a good Pythonic
> idiom for this?

Pythonic might be to be explicit: i.e. know in advance how long the 
sequence actually is.

One drawback I see with your code is that it doesn't give you any way to 
specify different defaults for the values. So here's an alternative to 
consider: try passing your sequence to a function. This lets you specify 
appropriate defaults, and it reads quite cleanly. Of course it also forces 
you to extract the code using those variables out into a separate function, 
but that may not be a bad thing.

>>> def process(a=None, b=None, c=None):
	print a, b, c

>>> seq = iter('abcd')
>>> process(*itertools.islice(seq,0,3))
a b c
>>> seq = iter('ab')
>>> process(*itertools.islice(seq,0,3))
a b None
>>> 

From a24061 at ducksburg.com  Fri Dec 21 05:43:02 2007
From: a24061 at ducksburg.com (Adam Funk)
Date: Fri, 21 Dec 2007 10:43:02 +0000
Subject: Does fileinput.input() read STDIN all at once?
References: <940l35-7lu.ln1@news.ducksburg.com>

Message-ID: 

On 2007-12-20, Tim Roberts wrote:

>>As a test, I tried this:
>>
>>   for line in fileinput.input():
>>      print '**', line
>>
>>and found that it would print nothing until I hit Ctl-D, then print
>>all the lines, then wait for another Ctl-D, and so on (until I pressed
>>Ctl-D twice in succession to end the loop).
>
> Note that you are doing a lot more than just reading from a file here. This
> is calling a function in a module.  Fortunately, you have the source to
> look at.
>
> As I read the fileinput.py module, this will eventually call
> FileInput.next(), which eventually calls FileInput.readline(), which
> eventually calls stdin.readlines(_bufsize).  The default buffer size is
> 8,192 bytes.

OK, I think I've got this figured out!

I'll keep using fileinput.input() for the normal case (reading from
files named as arguments) and use sys.stdin.readline() for testing
(reading from the keyboard, when no filenames are given).

Thanks to you and Jonathan for your advice.

From Lie.1296 at gmail.com  Sat Dec 22 08:17:47 2007
From: Lie.1296 at gmail.com (Lie)
Date: Sat, 22 Dec 2007 05:17:47 -0800 (PST)
Subject: Odd behavior in Python/Tkinter?
References: <3e6fc1b0-ac5e-42ed-8fe1-76da015c46ac@i29g2000prf.googlegroups.com>

Message-ID: <9eab04df-1ad0-4ede-aead-70c8128ec5a3@e25g2000prg.googlegroups.com>

On Dec 22, 7:35?pm, Fredrik Lundh  wrote:
> Lie wrote:
> > But an expression (e.g. string) is NOT a variable.
>
> in this case, it is. ?I don't know if it's worth spending more time on
> this, since you're not listening, but let's make one more attempt.

Sure I'm listening (well, actually I'm reading), but please spare me
since I can't understand what you meant in the previous posts (I'm
just starting Python, and yesterday was my first introduction to
Tkinter/Tk/Tcl). Everyone has their own newbie moments...

> for the Entry widget, the "textvariable" argument, if given, identifies
> an *internal* Tkinter variable (managed by the embedded Tcl inter-
> preter, not Python). ?changes to this variable will be reflected in the
> widget, and changes to the widget will be reflected in the variable.

That clears things up. I never realized that we can even specify the
name for the Tcl's variable, setting its values is a behavior, but
setting its name is... some kind of incomplete encapsulation (well its
understandable, complete encapsulation is never a Pythonic thing and
proper ways to keep the encapsulation is available [through
StringVar]).

> the *usual* way to create such a variable is to use StringVar, and leave
> it to Tkinter to come up with an internal variable name, but you can
> refer to any Tcl variable; if it doesn't exist, it's created.
>
> in your example, you told both widgets to use the same internal
> variable. ?you can do the same thing with a StringVar:
>
> ? ? ?var = Tk.StringVar()
>
> ? ? ?e1 = Tk.Entry(root, textvariable = var)
> ? ? ?e2 = Tk.Entry(root, textvariable = var)
>
> doing this has the advantage that you can access the internal variable
> via the StringVar object (held in the Python variable named "var"), but
> at the Tkinter level, it's exactly the same thing. ?changes to the
> variable will be reflected in both widgets, and changes to *either*
> widget will be reflected in the variable, and therefore also in the
> other widget.

> ?> On the other hand, the oddness multiplied since the value replication
> ?> doesn't happen if I set the textvariable to a variable.
>
> sure does, if you use the same internal variable for both widgets.

After reading your post, I realized the reason why it doesn't
replicate was because I set the variable to an empty string, which
doesn't initialize the textvariable.

From martin at v.loewis.de  Thu Dec  6 14:23:43 2007
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Thu, 06 Dec 2007 20:23:43 +0100
Subject: pipeline encoding
In-Reply-To: 
References: 
	<5rqre3F165k2mU1@mid.uni-berlin.de>

Message-ID: <47584C3F.2090309@v.loewis.de>

> Are there any command line option for telling python what encoding to
> use for stdout?

Not a command line option. However, you can wrap sys.stdout with a
stream that automatically performs an encoding. If all your print
statements output Unicode strings, you can do

sys.stdout = codecs.getwriter("utf-8")(sys.stdout)

HTH,
Martin

From bj_666 at gmx.net  Sat Dec 29 12:24:30 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 29 Dec 2007 17:24:30 GMT
Subject: Optional code segment delimiter?
References: 
Message-ID: <5tne6eF1e8nljU4@mid.uni-berlin.de>

On Sat, 29 Dec 2007 09:20:00 -0800, xkenneth wrote:

> Is it possible to use optional delimiters other than tab and colons?

No.

> And is there an alternate delimiter for statements other than the
> newline?
> 
> print this;print that; #for example

Yes.

But both are reasons to yell at you.  ;-)

Ciao,
	Marc 'BlackJack' Rintsch

From lists at cheimes.de  Wed Dec 12 21:01:54 2007
From: lists at cheimes.de (Christian Heimes)
Date: Thu, 13 Dec 2007 03:01:54 +0100
Subject: Vista + Rails 2.0 upgrade => subprocess hangs
In-Reply-To: <13f1941e-7a7d-4be4-92cf-fcec53874b73@d4g2000prg.googlegroups.com>
References: <13f1941e-7a7d-4be4-92cf-fcec53874b73@d4g2000prg.googlegroups.com>
Message-ID: <47609292.3020506@cheimes.de>

Eric Promislow wrote:
> Here's a small Python program I use to grab the output from rake:
> 
> =====
> 
> from subprocess import Popen, PIPE
> 
> p = Popen(args='c:\\ruby\\bin\\ruby.exe c:\\ruby\\bin\\rake -T',
>           cwd=u'c:\\Users\\ericp\\testing\\file07',
>           shell=True,
>           stdin=None,
>           stderr=PIPE,
>           stdout=PIPE,
>           creationflags=0x8000000
>           );
> p.wait()
> data = p.stdout.read()
> print data

Your usage of wait() is dangerous. The code can block indefinitely when
the stdout or stderr buffer is full.

Christian

From nagle at animats.com  Fri Dec 14 02:46:10 2007
From: nagle at animats.com (John Nagle)
Date: Thu, 13 Dec 2007 23:46:10 -0800
Subject: urlparse.urlparse bug - misparses long URL
In-Reply-To: <47622f71$0$36368$742ec2ed@news.sonic.net>
References: <47622f71$0$36368$742ec2ed@news.sonic.net>
Message-ID: <47623400$0$36387$742ec2ed@news.sonic.net>

John Nagle wrote:
> Here's a hostile URL that "urlparse.urlparse" seems to have mis-parsed.
...
Simpler example:

import urlparse
s = 'http://www.example.com.mx?https://www.example.com'
print urlparse.urlparse(s)

produces
('http', 'www.example.com.mx?https:', '//www.example.com', '', '', '')

which is wrong.

				John Nagle
				SiteTruth

From horpner at yahoo.com  Thu Dec 13 10:09:05 2007
From: horpner at yahoo.com (Neil Cerutti)
Date: Thu, 13 Dec 2007 15:09:05 GMT
Subject: efficient data loading with Python, is that possible possible?
References: 

Message-ID: 

On 2007-12-13, igor.tatarinov at gmail.com  wrote:
> On Dec 12, 4:03 pm, John Machin  wrote:
>> Inside your function
>> [you are doing all this inside a function, not at global level in a
>> script, aren't you?], do this:
>>     from time import mktime, strptime # do this ONCE
>>     ...
>>     blahblah = int(mktime(strptime(s, "%m%d%y%H%M%S")))
>>
>> It would help if you told us what platform, what version of Python,
>> how much memory, how much swap space, ...
>>
>> Cheers,
>> John
>
> I am using a global 'from time import ...'. I will try to do that
> within the
> function and see if it makes a difference.
>
> The computer I am using has 8G of RAM. It's a Linux dual-core AMD or
> something like that. Python 2.4
>
> Here is some of my code. Tell me what's wrong with it :)
>
> def loadFile(inputFile, loader):
>     # .zip files don't work with zlib
>     f = popen('zcat ' + inputFile)
>     for line in f:
>         loader.handleLine(line)
>     ...
>
> In Loader class:
> def handleLine(self, line):
>     # filter out 'wrong' lines
>     if not self._dataFormat(line): return
>
>     # add a new output record
>     rec = self.result.addRecord()
>
>     for col in self._dataFormat.colFormats:
>         value = parseValue(line, col)
>         rec[col.attr] = value
>
> def parseValue(line, col):
>     s = line[col.start:col.end+1]
>     # no switch in python
>     if col.format == ColumnFormat.DATE:
>         return Format.parseDate(s)
>     if col.format == ColumnFormat.UNSIGNED:
>         return Format.parseUnsigned(s)
>     if col.format == ColumnFormat.STRING:
>         # and-or trick (no x ? y:z in python 2.4)
>         return not col.strip and s or rstrip(s)
>     if col.format == ColumnFormat.BOOLEAN:
>         return s == col.arg and 'Y' or 'N'
>     if col.format == ColumnFormat.PRICE:
>         return Format.parseUnsigned(s)/100.
>
> And here is Format.parseDate() as an example:
> def parseDate(s):
>     # missing (infinite) value ?
>     if s.startswith('999999') or s.startswith('000000'): return -1
>     return int(mktime(strptime(s, "%y%m%d")))

An inefficient parsing technique is probably to blame. You first
inspect the line to make sure it is valid, then you inspect it
(number of column type) times to discover what data type it
contains, and then you inspect it *again* to finally translate
it.

> And here is parseValue (will using a hash-based dispatch make
> it much faster?):

Not much.

You should be able to validate, recognize and translate all in
one pass. Get pyparsing to help, if need be.

What does your data look like?

-- 
Neil Cerutti

From arnodel at googlemail.com  Mon Dec 10 03:37:08 2007
From: arnodel at googlemail.com (Arnaud Delobelle)
Date: Mon, 10 Dec 2007 00:37:08 -0800 (PST)
Subject: Are Python deques linked lists?
References:  

Message-ID: <963d4ed7-48fc-4a3a-bbff-9b5e91b01704@18g2000hsf.googlegroups.com>

On Dec 9, 10:54 pm, John Machin  wrote:
> On Dec 10, 9:43 am, "Just Another Victim of the Ambient Morality"
>
>  wrote:
> >     I'm looking for a linked list implementation.  Something iterable with
> > constant time insertion anywhere in the list.
>
> It's on the shelf between the jar of phlogiston and the perpetual
> motion machine.

I recommend a quick glance at any article on linked list.
Here's one: http://en.wikipedia.org/wiki/Linked_list

--
Arnaud

From NikitaTheSpider at gmail.com  Sat Dec 22 15:30:36 2007
From: NikitaTheSpider at gmail.com (Nikita the Spider)
Date: Sat, 22 Dec 2007 15:30:36 -0500
Subject: Inter-process communication, how?
References: 
Message-ID: 

In article 
,
 ecir.hana at gmail.com wrote:

> Hi,
> let's say I have two scripts: one does some computations and the other
> one is a graphical front end for launching the first one. And both run
> in separate processes (front end runs and that it spawns a subprocess
> with the computation). Now, if the computation has a result I would
> like to display it in the front end. In another words, I would like to
> pass some data from one process to another. How to do that? I'm
> affraid I can't use a pipe since the computation could print out some
> logging (if I understant pipes correctly).

Others have given you good suggestions; there's also this option which 
may or may not be an appropriate tool for what you want to do:
http://NikitaTheSpider.com/python/shm/

-- 
Philip
http://NikitaTheSpider.com/
Whole-site HTML validation, link checking and more

From ctrachte at gmail.com  Sun Dec 30 21:56:04 2007
From: ctrachte at gmail.com (infixum)
Date: Sun, 30 Dec 2007 18:56:04 -0800 (PST)
Subject: Help please with code to find and move files.
References: 
	<79776f34-be23-470f-9fe7-56e3741075d3@l6g2000prm.googlegroups.com>
	<18mgn3d140ladphb15lo17epi6lpd5j8ed@4ax.com>
Message-ID: 

>
> after changing i got this
>
> ? ? path = r"c:\"
> ? ? ? ? ? ? ? ? ^
> SyntaxError: EOL while scanning single-quoted string

Sorry about that.  You can't end with a backslash - my bad.  I just
tried this in the interpreter and 'c:' works.

From tgrav at mac.com  Mon Dec  3 14:24:11 2007
From: tgrav at mac.com (Tommy Grav)
Date: Mon, 3 Dec 2007 14:24:11 -0500
Subject: takes no arguments (1 given)
In-Reply-To: <2b9a029c-20e4-4f20-9613-10617f6f540d@a39g2000pre.googlegroups.com>
References: <2b9a029c-20e4-4f20-9613-10617f6f540d@a39g2000pre.googlegroups.com>
Message-ID: <4A43DB3A-3777-4818-9B3F-D53608C75347@mac.com>

On Dec 3, 2007, at 2:10 PM, Mike wrote:

> In the following Display inherits from the Tkinter class Canvas:
>
> import sys
> from Tkinter import *
> class Display(Canvas) :
> ...
>     def fill_canvas() :
def fill_canvas(self):
>         slop=self.slop
>         set_sr(int(self.cget('width'))+slop,
>                   int(self.cget('height'))+slop)
>         self.refresh()
> ...
>
> disp=Display(fred, None)
> disp.pack()
> def stupid(unused) : disp.fill_canvas()
> disp.bind("", stupid)
> mainloop()
>
>> From the above I get:
> Exception in Tkinter callback
> ...
>   File Ca_canvas.py, line 173, in stupid
>       def stupid(unused) : disp.fill_canvas()
> TypeError: fill_canvas() takes no arguments (1 given)
>
>
> What is going on?
> I tried to do something similar with lambda
> and got the same result.

The class method needs a self argument so that
disp.fill_canvas() can parse the class instance disp
to the method.

Cheers
   TG

From kw at codebykevin.com  Mon Dec 31 10:47:23 2007
From: kw at codebykevin.com (Kevin Walzer)
Date: Mon, 31 Dec 2007 10:47:23 -0500
Subject: TK 8.5
In-Reply-To: 
References: 

Message-ID: <47790F0B.2090402@codebykevin.com>

Christian Heimes wrote:
> Leon wrote:
> 
>> 2) Is it a way to use Tk 8.5 with the present version of Python (2.5) ?
> 
> No, not yet. It may be possible to back port Tcl Tk 8.5 support from 2.6
> to 2.5 once we have finished the migration to 8.5.

Actually, you can. I'm using a custom-built Python that links to 8.5 
with no problem. However, you do have to use some additional modules 
(referenced in another post) to get things working properly.

--Kevin

-- 
Kevin Walzer
Code by Kevin
http://www.codebykevin.com

From arnodel at googlemail.com  Mon Dec 31 12:22:14 2007
From: arnodel at googlemail.com (Arnaud Delobelle)
Date: Mon, 31 Dec 2007 09:22:14 -0800 (PST)
Subject: Bizarre behavior with mutable default arguments
References: 
	<47768DE0.5050406@v.loewis.de>

	<2541af1e-9167-4cee-b773-8f6ab0f23b8f@i12g2000prf.googlegroups.com> 
	<4a5d4311-c5ec-4f3c-8800-c30ac30e399d@t1g2000pra.googlegroups.com> 

Message-ID: <6aba9463-f0ea-43a2-b8de-9c7026c4d14e@e4g2000hsg.googlegroups.com>

On Dec 31, 10:58?am, Odalrick  wrote:
> On 30 Dec, 17:26, George Sakkis  wrote:
>
> > On Dec 29, 9:14 pm, bukzor  wrote:
>
> > > Here's the answer to the question:http://www.python.org/doc/faq/general/#why-are-default-values-shared-...
>
> > > It looks like Guido disagrees with me, so the discussion is closed.
>
> > Note that the FAQ mainly explains *what* happens, not *why* was this
> > decision taken. Although it shows an example where "this feature can
> > be useful", it's neither the only way to do it nor is memoization as
> > common as wanting fresh default arguments on every call.
>
> I'm surprised noone has said anything about the why of default
> mutables. I think it is becasue it isn't easy to do it an other way.

[...]

There is an easy enough way: evaluate default values when the function
is called rather than when it is defined.  This behaviour comes with
its own caveats as well I imagine, and it's not 'as easy' to implement
as the current one.

What's good about the current behaviour is that it is easy to reason
with (once you know what happens), even though you almost have to get
bitten once.  But using this to have static variable is extremely ugly
IMHO.

--
Arnaud

From devnew at gmail.com  Thu Dec 20 10:20:41 2007
From: devnew at gmail.com (devnew at gmail.com)
Date: Thu, 20 Dec 2007 07:20:41 -0800 (PST)
Subject: clearing text on canvas
References: <4371c80c-2a97-4c3c-99c1-813459d28f32@d27g2000prf.googlegroups.com>

Message-ID: <9d065a34-ade5-4f5e-816f-46f56b9787ec@s19g2000prg.googlegroups.com>

thanx a lot Peter
dn

From rurpy at yahoo.com  Thu Dec 20 10:57:02 2007
From: rurpy at yahoo.com (rurpy at yahoo.com)
Date: Thu, 20 Dec 2007 07:57:02 -0800 (PST)
Subject: Is there *any* real documentation to PyWin32?
References: 
Message-ID: <8d7d12b1-eebd-45b7-86e0-f1c09f4aa58b@b1g2000pra.googlegroups.com>

On Dec 20, 6:35 am, Benoit  wrote:
> I understand that the Win32 has been said to be itself poorly
> documented, so perhaps that the documentation that comes with the
> modules is of similar quality is no coincidence.  Maybe I'm still too
> young in my programming to grasp the good of that documentation, but
> for myself, it tells me next to nothing.  Could anyone point me to
> anything which may exist that does a better job of explaining the
> extensions' use?  I tried to take a look @ Microsoft's documentation,
> but it was confusing.

There is Mark Hammond's book [1] about python-win32 though I haven't
used it and don't know if it contains anything that would be helpful
to you.
It is rather old now but some claim that is not important. [2]

Personally I consider Python-win32 to be docware -- software that is
sufficiently difficult to use with the included free documentation
that many people will just buy the $$$ documentation.  Numpy is
another prominent example of docware.  A misappropriation of the good-
will value of legitimate open source software.

[1]http://www.amazon.com/Python-Programming-Win32-Windows-Programmers/
dp/1565926218/ref=sr_1_1?ie=UTF8&s=books&qid=1198165983&sr=1-1
[2]
http://groups.google.com/group/comp.lang.python/browse_thread/thread/e5a1f274ec411cbe/78b1390a6f6d75b2?hl=en&lnk=st&q=com+win32+(doc+OR+documentation)+group%3Acomp.lang.python#78b1390a6f6d75b2

From tommy.nordgren at comhem.se  Sat Dec  8 08:26:29 2007
From: tommy.nordgren at comhem.se (Tommy Nordgren)
Date: Sat, 8 Dec 2007 14:26:29 +0100
Subject: how to convert 3 byte to float
In-Reply-To: <5rvil4F16qk56U1@mid.individual.net>
References: <475a7336$0$13116$9b4e6d93@newsspool2.arcor-online.net>
	<5rvc6hF17032iU1@mid.individual.net>
	<475a8591$0$17533$9b4e6d93@newsspool4.arcor-online.net>
	<5rvil4F16qk56U1@mid.individual.net>
Message-ID: <91A91818-2955-401D-9238-ED800EFD1FA5@comhem.se>

On 8 dec 2007, at 13.57, Bjoern Schliessmann wrote:

> Mario M. Mueller wrote:
>
>> It's output of a digitizer (but not that old). I was also
>> wondering about the reason for this limitation (maybe the design
>> is ~20 years old).
>
> Uh, that's weird. Since Python cannot guess its format, you'll have
> to try it out. Why don't you try to let the device output
> well-known values and write a python script to display them
> bitwise? With some luck you can reverse engineer the format.
>
> Regards,
>
>
> Bj?rn
>
> --  
> BOFH excuse #12:
>
> dry joints on cable plug
>
	It will probably require a high quality voltage standard to do this.  
There are special high precission
voltage standard chips to do this. For producing other voltages than  
the standard voltage of the chip,
use pulsewith modulation with a low pass filter.
-------------------------------------
This sig is dedicated to the advancement of Nuclear Power
Tommy Nordgren
tommy.nordgren at comhem.se

From diesch at spamfence.net  Sun Dec 23 10:32:51 2007
From: diesch at spamfence.net (Florian Diesch)
Date: Sun, 23 Dec 2007 16:32:51 +0100
Subject: exception message output problem
References: <482a0572-8dbe-42b6-9058-118ee0d28254@d4g2000prg.googlegroups.com>

Message-ID: <3mb245-cee.ln1@mid.florian-diesch.de>

Lie  wrote:

> # Python have an odd (read: broken) singleton implementation
> # single member tuple must have a comma behind it

Otherwise (1+2)+(3+4) would evaluate to (3, 7) instead of 10.

   Florian
-- 

-----------------------------------------------------------------------
**  Hi! I'm a signature virus! Copy me into your signature, please!  **
-----------------------------------------------------------------------

From nir1408 at gmail.com  Thu Dec 20 08:21:15 2007
From: nir1408 at gmail.com (Nir)
Date: Thu, 20 Dec 2007 05:21:15 -0800 (PST)
Subject: New to Python Would like debug advice
References: 
Message-ID: 

On Dec 17, 9:17 pm, PatrickMinnesota 
wrote:
> Yep, I'm new to the language, it's been a couple of months.
>
> I opted for gvim and console window for developing on a Windows XP
> box.  I'm not a huge fan of IDEs except for when I need some
> debugging.  I've done my googling and see a bunch of options out there
> for a debugging solution for Python on Windows.
>
> I've used Eclipse for a few years for Java development and I
> understand there is a Python module for it that might make sense.
>
> What I'm looking for is advice on what to use todebuggeneral Python
> programs at the source level, some will be graphical.  If the eclipse
> route is the way to go, that's fine, but I'm wondering what other
> options people have good luck with.  Keep in mind I will probably
> continue to use Vi/Emacs and a console window for my main development.
>
> Thanks.

Try Winpdb (On Linux as well).

From t.rectenwald at gmail.com  Wed Dec 26 13:23:39 2007
From: t.rectenwald at gmail.com (t_rectenwald)
Date: Wed, 26 Dec 2007 10:23:39 -0800 (PST)
Subject: Writing Oracle Output to a File
References: <9ea3f90b-23e1-46c2-beb9-2b7cd8cf83cc@s48g2000hss.googlegroups.com>

	<9205dee1-cecf-4c55-9edd-35b2a4c4d96f@j64g2000hsj.googlegroups.com> 
	<3a3c6c6c-8497-4db8-892e-d6f898f3f367@i3g2000hsf.googlegroups.com>
Message-ID: <633d8f91-8866-444d-a905-e9f806fae75d@p69g2000hsa.googlegroups.com>

On Dec 26, 12:10?pm, t_rectenwald  wrote:
> On Dec 26, 12:06?pm, Paul Hankin  wrote:
>
>
>
>
>
> > On Dec 26, 4:51?pm, t_rectenwald  wrote:
>
> > > On Dec 26, 10:36?am, t_rectenwald  wrote:
>
> > > > Hello,
>
> > > > I attempting to execute an Oracle query, and write the results to a
> > > > file in CSV format. ?To do so, I've done the following:
>
> > > > import cx_Oracle
> > > > db = cx_Oracle.connect('user/pass at DBSID')
> > > > cursor = db.cursor()
> > > > cursor.arraysize = 500
> > > > cursor.execute(sql)
> > > > result = cursor.fetchall()
>
> > > > The above works great. ?I'm able to connect to the database and print
> > > > out the results as a list of tuples. ?Here is where I get lost. ?How
> > > > do I work with a "list of tuples?" ?My understanding is that a "list"
> > > > is basically an array (I don't come from a Python background). ?Tuples
> > > > are a "collection of objects." ?So, if I do...
>
> > > > print result[0]
>
> > > > I get the first row of the query, which would make sense. ?The problem
> > > > is that I cannot seem to write tuples to a file. ?I then do this...
>
> > > > csvFile = open("output.csv", "w")
> > > > csvFile = write(result[0])
> > > > csvFile.close
>
> > > > This generates an exception:
>
> > > > TypeError: argument 1 must be string or read-only character buffer,
> > > > not tuple
>
> > > > So, I'm a bit confused as to the best way to do this. ?I guess I could
> > > > try to convert the tuples into strings, but am not sure if that is the
> > > > proper way to go. ?Any help would be appreciated. ?I've also seen a
> > > > csv module out there, but am not sure if that is needed in this
> > > > situation.
>
> > > > Best Regards,
> > > > Tom
>
> > > Hello,
>
> > > I was able to figure this out by using join to convert the tuples into
> > > strings, and then have those write to the filehandle:
>
> > > csvFile = open("output.csv", "w")
> > > for row in cursor.fetchall():
> > > ? ? csvFile.write(','.join(row) + "\n")
> > > csvFile.close
>
> > As usual, the python standard library has functions that do what you
> > want! Using the csv module will help you avoid trouble when your data
> > contains commas or control characters such as newlines.
>
> > import csv
> > help(csv)
>
> > Suggests this code:
> > import csv
> > csv_file = open('output.csv', 'w')
> > csv_writer = csv.writer(csvFile)
> > csv_writer.writerows(cursor.fetchall())
> > csv_file.close()
>
> > --
> > Paul Hankin- Hide quoted text -
>
> > - Show quoted text -
>
> Thanks for the tip. ?I'll read up on the csv module and use that
> instead. ?I'm already running into errors with null values, etc... and
> I believe some of the data in this DB will have commas, so this will
> be a much cleaner way of doing things.
>
> Regards,
> Tom- Hide quoted text -
>
> - Show quoted text -

I read up on the csv module.  BTW, thanks again!  That took care of
null values, I didn't even have to iterate anything in a loop, or
convert the tuples.  Great stuff.  I'm loving Python.

Regards,
Tom

From caroliina at hot.ee  Sun Dec  9 11:11:00 2007
From: caroliina at hot.ee (caroliina)
Date: Sun, 9 Dec 2007 08:11:00 -0800 (PST)
Subject: reading list of list to a file
Message-ID: <14239876.post@talk.nabble.com>

i made a list of lists but i cant write it into a file. how do i get the
first string in a sublist?
-- 
View this message in context: http://www.nabble.com/reading-list-of-list-to-a-file-tp14239876p14239876.html
Sent from the Python - python-list mailing list archive at Nabble.com.

From answer654 at 8439.e4ward.com  Mon Dec  3 09:10:50 2007
From: answer654 at 8439.e4ward.com (Michael Goerz)
Date: Mon, 03 Dec 2007 15:10:50 +0100
Subject: converting to and from octal escaped UTF--8
In-Reply-To: 
References: <5rh3q7F142qimU1@mid.uni-berlin.de>

	<634f39ae-a0a9-4d07-983a-198445d8c849@w34g2000hsg.googlegroups.com>

Message-ID: <5rih37F14a0jjU1@mid.uni-berlin.de>

MonkeeSage wrote:
> On Dec 3, 1:31 am, MonkeeSage  wrote:
>> On Dec 2, 11:46 pm, Michael Spencer  wrote:
>>
>>
>>
>>> Michael Goerz wrote:
>>>> Hi,
>>>> I am writing unicode stings into a special text file that requires to
>>>> have non-ascii characters as as octal-escaped UTF-8 codes.
>>>> For example, the letter "?" (latin capital I with acute, code point 205)
>>>> would come out as "\303\215".
>>>> I will also have to read back from the file later on and convert the
>>>> escaped characters back into a unicode string.
>>>> Does anyone have any suggestions on how to go from "?" to "\303\215" and
>>>> vice versa?
>>> Perhaps something along the lines of:
>>>   >>> def encode(source):
>>>   ...     return "".join("\%o" % ord(c) for c in source.encode('utf8'))
>>>   ...
>>>   >>> def decode(encoded):
>>>   ...     bytes = "".join(chr(int(c, 8)) for c in encoded.split('\\')[1:])
>>>   ...     return bytes.decode('utf8')
>>>   ...
>>>   >>> encode(u"?")
>>>   '\\303\\215'
>>>   >>> print decode(_)
>>>   ?
>>> HTH
>>> Michael
>> Nice one. :) If I might suggest a slight variation to handle cases
>> where the "encoded" string contains plain text as well as octal
>> escapes...
>>
>> def decode(encoded):
>>   for octc in (c for c in re.findall(r'\\(\d{3})', encoded)):
>>     encoded = encoded.replace(r'\%s' % octc, chr(int(octc, 8)))
>>   return encoded.decode('utf8')
>>
>> This way it can handle both "\\141\\144\\146\\303\\215\\141\\144\\146"
>> as well as "adf\\303\\215adf".
>>
>> Regards,
>> Jordan
> 
> err...
> 
> def decode(encoded):
>   for octc in re.findall(r'\\(\d{3})', encoded):
>     encoded = encoded.replace(r'\%s' % octc, chr(int(octc, 8)))
>   return encoded.decode('utf8')
Great suggestions from both of you! I came up with my "final" solution
based on them. It encodes only non-ascii and non-printables, and stays
in unicode strings for both input and output. Also, low ascii values now
encode into a 3-digit octal sequence also, so that decode can catch them
properly.

Thanks a lot,
Michael

____________

import re

def encode(source):
    encoded = ""
    for character in source:
        if (ord(character) < 32) or (ord(character) > 128):
            for byte in character.encode('utf8'):
                encoded += ("\%03o" % ord(byte))
        else:
            encoded += character
    return encoded.decode('utf-8')

def decode(encoded):
    decoded = encoded.encode('utf-8')
    for octc in re.findall(r'\\(\d{3})', decoded):
        decoded = decoded.replace(r'\%s' % octc, chr(int(octc, 8)))
    return decoded.decode('utf8')

orig = u"bla?blub" + chr(10)
enc  = encode(orig)
dec  = decode(enc)
print orig
print enc
print dec

From piet at cs.uu.nl  Wed Dec  5 13:11:59 2007
From: piet at cs.uu.nl (Piet van Oostrum)
Date: Wed, 05 Dec 2007 19:11:59 +0100
Subject: "Python" is not a good name, should rename to "Athon"
References: 
	<78bdd499-a263-4c68-8e43-e3e59b111c7e@a39g2000pre.googlegroups.com>

Message-ID: 

>>>>> "Adrian Cherry"  (AC) wrote:

>AC> For that matter C# is no better, I thought that # was pronounced 
>AC> hash, I still refer to C# as C-hash.

Are you musically illiterate?
-- 
Piet van Oostrum 
URL: http://www.cs.uu.nl/~piet [PGP 8DAE142BE17999C4]
Private email: piet at vanoostrum.org

From robin at reportlab.com  Mon Dec 10 09:43:27 2007
From: robin at reportlab.com (Robin Becker)
Date: Mon, 10 Dec 2007 14:43:27 +0000
Subject: distutils & OS X universal binaries
In-Reply-To: <475BC83D.9040903@jessikat.plus.net>
References: <475AA774.7020904@jessikat.plus.net>	<475ab088$0$19620$9b622d9e@news.freenet.de>	<475ACA77.5030802@jessikat.plus.net>
	<475ACEBE.8070509@v.loewis.de>	<475AD50F.1060301@jessikat.plus.net>	<475ad8cd$0$5335$9b622d9e@news.freenet.de>	<475AE13B.8070901@jessikat.plus.net>	<475bc092$0$1221$9b622d9e@news.freenet.de>
	<475BC83D.9040903@jessikat.plus.net>
Message-ID: <475D508F.8070502@chamonix.reportlab.co.uk>

Robin Becker wrote:
........
>> Ok. Still, I would write it as
>>
>> #if defined(__LITTLE_ENDIAN__)
>>   #undef WORDS_BIGENDIAN
>> #elif defined(__BIG_ENDIAN__)
>>   #undef WORDS_BIGENDIAN
>>   #define WORDS_BIGENDIAN 1
>> #endif
>>
>> Regards,
>> Martin
> I'm never sure if undef gives an error if the variable isn't defined, 
> but that is cleaner
> 
> thanks for the assistance

Just like to say my testee/victim reports great success with the above snippet 
inserted into the right config file. Thanks to all.
-- 
Robin Becker

From mnordhoff at mattnordhoff.com  Sat Dec 29 20:09:14 2007
From: mnordhoff at mattnordhoff.com (Matt Nordhoff)
Date: Sat, 29 Dec 2007 20:09:14 -0500
Subject: sqlobject question...
In-Reply-To: <086201c84a80$1e3e2e40$0301a8c0@tmesa.com>
References: <086201c84a80$1e3e2e40$0301a8c0@tmesa.com>
Message-ID: <4776EFBA.8080208@mattnordhoff.com>

bruce wrote:
> hi...
> 
> this continues my investigation of python/sqlobject, as it relates to the
> need to have an id, which is auto-generated.
> 
> per various sites/docs on sqlobject, it appears that you can override the
> id, by doing something similar to the following:
> 
> def foo(SQLObject):
>     def _init(self, id, connection=None):
>         id = str(id)
>         SQLObject._init(self, id, connection)
> 
>     cat=StringCol()
>     dog=StringCol()
> 
> 
> however, no matter what i do, i can't seem to insert anything into "id" so
> that i can use the "id"!!!!
> 
> any thoughts/comments/pointers, code samples would be helpful!!!
> 
> thanks

SQLObject may do something weird, but normally the init method is named
"__init__", not "_init". Try changing that.
-- 

From hniksic at xemacs.org  Tue Dec 18 11:35:49 2007
From: hniksic at xemacs.org (Hrvoje Niksic)
Date: Tue, 18 Dec 2007 17:35:49 +0100
Subject: checking a string against multiple patterns
References: 
Message-ID: <87lk7sklju.fsf@mulj.homelinux.net>

tomasz  writes:

> here is a piece of pseudo-code (taken from Ruby) that illustrates the
> problem I'd like to solve in Python:
[...]

I asked the very same question in
http://groups.google.com/group/comp.lang.python/browse_frm/thread/3e8da954ff2265e/4deb5631ade8b393
It seems that people either write more elaborate constructs or learn
to tolerate the nesting.

> Is there an alternative to it?

A simple workaround is to write a trivial function that returns a
boolean, and also stores the match object in either a global storage
or an object.  It's not really elegant, especially in smaller scripts,
but it works:

def search(pattern, s, store):
    match = re.search(pattern, s)
    store.match = match
    return match is not None

class MatchStore(object):
    pass   # irrelevant, any object with a 'match' attr would do

where = MatchStore()
if search(pattern1, s, where):
    pattern1 matched, matchobj in where.match
elif search(pattern2, s, where):
    pattern2 matched, matchobj in where.match
...

From DirkHagemann at gmail.com  Fri Dec  7 10:57:52 2007
From: DirkHagemann at gmail.com (Dirk Hagemann)
Date: Fri, 7 Dec 2007 07:57:52 -0800 (PST)
Subject: Converting Excel time-format (hours since 1.1.1901)
References: <6c5cc79e-a121-45c5-9a97-b8564ca9f3bf@l16g2000hsf.googlegroups.com>
	<716882bb-ab0f-4eb5-b577-1f12372d7b93@w56g2000hsf.googlegroups.com> 

Message-ID: <522c5cd1-10c2-4ebd-b34d-9e7578617e4e@e10g2000prf.googlegroups.com>

On 7 Dez., 16:50, Dirk Hagemann  wrote:
> On 7 Dez., 16:21, Tim Golden  wrote:
>
>
>
> > mensana... at aol.com wrote:
> > > On Dec 7, 7:20?am, Dirk Hagemann  wrote:
> > >> Hello,
>
> > >> From a zone-file of a Microsoft Active Directory integrated DNS server
> > >> I get the date/time of the dynamic update entries in a format, which
> > >> is as far as I know the hours since january 1st 1901.
>
> > If it *is* then the easiest way is this:
>
> > 
> > import datetime
> > print datetime.date (1901, 1, 1) + datetime.timedelta (hours=3566839)
>
> > 
>
> > But, as someone pointed out, that puts you somewhere in 2300.
> > Where are you getting the 1901 from (and the hours, for that
> > matter). If it's based, as AD dates are, for example, from 1601,
> > then the calc becomes:
>
> > 
> > import datetime
> > print datetime.date (1601, 1, 1) + datetime.timedelta (hours=3566839)
>
> > 
>
> > which looks more realistic. But frankly I'm guessing.
>
> > TJG
>
> (3566839/24)/365 = 407   - YES I did this calculation too and was
> surprised. But if you try this out in MS Excel:
>  ="01.01.1901"+(A1/24-(REST(A1;24)/24))+ZEIT(REST(A1;24);0;0)  (put
> 3566839 in field A1 and switch the format of the result-fieldby right-
> click on it to the
> date format "14.3.01 13:30")
>
> and then replace 3566839 by, let's say, "2", Excel calculates the date
> 01.10.1901 2:00 AM. Try out other values like 5 or 24! So I thought
> 3566839 represents hours.
>
> Dirk

Additional to my last posting: if you want to try this out in Excel
you should replace the command "REST" by the english command what
should be something like "remainder".

From mblume at socha.net  Fri Dec 28 08:55:14 2007
From: mblume at socha.net (Martin Blume)
Date: Fri, 28 Dec 2007 14:55:14 +0100
Subject: Compiler or stg.  to get exe!
References: 
Message-ID: <47750042$0$29615$5402220f@news.sunrise.ch>

"SMALLp" schrieb 
> I have question. After short goggling, I haven't found 
> anything good.  So my question is:
> I wrote a program in python and i Get .py files and some 
> .pyc in working folder. Now i want program tu run under 
> windows, so i need to get exe files or something.
>
If python is installed on the target machine (Windows or 
Linux or ...) you do not need an exe, just copy the py file.

> And what do i need to do to make program for linux. 
> (stg. like .deb package)
a .deb package is more than a "program".
You'll have to look at the .deb developer documentation.

Again, for simple programs, just copying the .py file
is sufficient, provided that Python (and all the modules 
your .py needs) is installed.

HTH
Martin

From lists at cheimes.de  Fri Dec 28 08:46:10 2007
From: lists at cheimes.de (Christian Heimes)
Date: Fri, 28 Dec 2007 14:46:10 +0100
Subject: parallel processing in standard library
In-Reply-To: <4774BCDD.40503@web.de>
References: <32e43bb70712270552n76d460e8y9d1d2acaa73f829e@mail.gmail.com>	
	<4774BCDD.40503@web.de>
Message-ID: 

Stefan Behnel wrote:
 > Well, there is one parallel processing API that already *is* part of
stdlib:
> the threading module. So the processing module would fit just nicely into the
> idea of a "standard" library.

Don't you forget the select module and its siblings for I/O bound
concurrency?

Christian

From gagsl-py2 at yahoo.com.ar  Mon Dec 17 22:38:07 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Tue, 18 Dec 2007 00:38:07 -0300
Subject: Keyword args to SimpleXMLRPCServer
References: <15144ed7-05a1-4812-8cf3-4cc8aba9c949@e6g2000prf.googlegroups.com>
Message-ID: 

En Mon, 17 Dec 2007 21:13:32 -0300, Sean DiZazzo   
escribi?:

> Why is the following not working?  Is there any way to get keyword
> arguments working with exposed XMLRPC functions?
>
> ~~~~~~~~~~~~~~~~ server.py
> import SocketServer
> from SimpleXMLRPCServer import
> SimpleXMLRPCServer,SimpleXMLRPCRequestHandler
>
> # Threaded mix-in
> class
> AsyncXMLRPCServer(SocketServer.ThreadingMixIn,SimpleXMLRPCServer):
> pass
>
> class XMLFunctions(object):
>     def returnArgs(*args, **kwargs):
>         return kwargs.items()

You forget the self argument. But this is not the problem. XMLRPC does not  
allow passing parameters by name, only positional parameters. See  
http://www.xmlrpc.com/spec:

"If the procedure call has parameters, the  must contain a  
 sub-item. The  sub-item can contain any number of  
s, each of which has a . "

Parameters have no , just a , so you can only use positional  
parameters. But you can simulate keyword arguments by collecting them in a  
dictionary and passing that dictionary as an argument instead.

(server side)
      def returnArgs(self, x, y, other={}):
          return x, y, other

(client side)
     print server.returnArgs("xvalue", "yvalue", dict(foo=123, bar=234,  
baz=345))

-- 
Gabriel Genellina

From nagle at animats.com  Fri Dec 14 11:43:42 2007
From: nagle at animats.com (John Nagle)
Date: Fri, 14 Dec 2007 08:43:42 -0800
Subject: urlparse.urlparse bug - misparses long URL
In-Reply-To: <47623ac0$0$36369$742ec2ed@news.sonic.net>
References: <47622f71$0$36368$742ec2ed@news.sonic.net>

	<47623ac0$0$36369$742ec2ed@news.sonic.net>
Message-ID: <4762b1fd$0$36318$742ec2ed@news.sonic.net>

John Nagle wrote:
> Matt Nordhoff wrote:
>> John Nagle wrote:
>>> Here's a hostile URL that "urlparse.urlparse" seems to have mis-parsed.
>>> ====
> ...
> 
>>
>> It's breaking on the first slash, which just happens to be very late in
>> the URL.
>>
>>>>> urlparse('http://example.com?blahblah=http://example.net')
>> ('http', 'example.com?blahblah=http:', '//example.net', '', '', '')
> 
> That's what it seems to be doing:
> 
> sa1 = 'http://example.com?blahblah=/foo'
> sa2 = 'http://example.com?blahblah=foo'
> print urlparse.urlparse(sa1)
> ('http', 'example.com?blahblah=', '/foo', '', '', '') # WRONG
> print urlparse.urlparse(sa2)
> ('http', 'example.com', '', '', 'blahblah=foo', '') # RIGHT
> 
> That's wrong. RFC3896 ("Uniform Resource Identifier (URI): Generic 
> Syntax"), page 23 says
> 
>    "The characters slash ("/") and question mark ("?") may represent data
>    within the query component.  Beware that some older, erroneous
>    implementations may not handle such data correctly when it is used as
>    the base URI for relative references (Section 5.1), apparently
>    because they fail to distinguish query data from path data when
>    looking for hierarchical separators."
> 
> So "urlparse" is an "older, erroneous implementation".  Looking
> at the code for "urlparse", it references RFC1808 (1995), which
> was a long time ago, three revisions back.
> 
> Here's the bad code:
> 
> def _splitnetloc(url, start=0):
>     for c in '/?#': # the order is important!
>         delim = url.find(c, start)
>         if delim >= 0:
>             break
>     else:
>         delim = len(url)
>     return url[start:delim], url[delim:]
> 
> That's just wrong.  The domain ends at the first appearance of
> any character in '/?#', but that code returns the text before the
> first '/' even if there's an earlier '?'.  A URL/URI doesn't
> have to have a path, even when it has query parameters. 

     "urlparse" doesn't use regular expressions.  Is there some good
reason for that?  It would be easy to fix the code above with a
regular expression to break on any char in '/?#'.  But
urlparse would have to import "re".  Is that undesirable?

					John Nagle

From gagsl-py2 at yahoo.com.ar  Sun Dec 16 23:46:44 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Mon, 17 Dec 2007 01:46:44 -0300
Subject: Immutable Geometry Types
References: <91b0efda-7fc4-4914-93e3-bf7a7101a4e8@l32g2000hse.googlegroups.com>
Message-ID: 

En Sun, 16 Dec 2007 23:13:47 -0300, PeterBraden1 at googlemail.com  
 escribi?:

> Hi,
>
> I am learning python, having learnt most of my object orientation with
> java, and decided to port some of my geometry classes over. I haven't
> used immutability in python before, so thought this would be an
> interesting chance to learn.
>
> I am looking for feedback on any ways in which I might have left
> variables unprotected, and ways in which I am not being pythonic.

Immutable classes usually implement __new__ and leave __init__  
unimplemented:

     def __new__(cls, val, measure='rad'):
         # using 'type' as a name shadows the builtin type
         instance = super(Angle, self).__new__()
         if measure == 'rad': pass
         elif measure == 'deg': value = math.radians(value)
         else: raise ValueError, "unknown Angle measure: %r" % measure
         instance._value = value
         return instance

For the various comparison operators, since this class "plays well" with  
ordering, it's easier to implement __cmp__ and make all operators refer to  
it:

     def __cmp__(self, other):
        if isinstance(other, Angle):
           return cmp(self._value, other._value)
        raise NotImplementedError

     __eq__ = lambda self,other: self.__cmp__(other)==0
     __ne__ = lambda self,other: self.__cmp__(other)!=0
     __lt__ = lambda self,other: self.__cmp__(other)<0
     __ge__ = lambda self,other: self.__cmp__(other)>=0
     __gt__ = lambda self,other: self.__cmp__(other)>0
     __le__ = lambda self,other: self.__cmp__(other)<=0

>     def __setattr__(self, name, value):
>         """
>         Suppress setting of data - Angle is immutable
>         """
>         self._immutableError()

Why? This class contains a single attribute, value, and we could make it  
immutable. But why restrict the possibility to add *other* attributes?
(There is __slots__ too, but I would not recommend it at this stage)

>     def __delattr__(self, name):

Same as above.

>     def __mul__(self, other):
>     def __div__(self, other):

(I've never seen those operations on angles)

>     def fromCos(self, c):
>         """
>         return angle with specified cos
>         """
>         return Angle(math.acos(c))
>
>     fromCos = classmethod(fromCos)

I prefer to write

     @classmethod
     def fromCos(self, c):

>     radians = property(lambda self: self._value, lambda x:
> self._immutableError())
>     degrees = property(lambda self: math.degrees(self._value), lambda
> x: self._immutableError())
>     cos = property(lambda self: math.cos(self._value), lambda x:
> self._immutableError())
>     sin = property(lambda self: math.sin(self._value), lambda x:
> self._immutableError())
>     tan = property(lambda self: math.tan(self._value), lambda x:
> self._immutableError())

You don't have to write them that way. Just omit the property setter, and  
it will be read-only.

     tan = property(lambda self: math.tan(self._value))

Or:

     @property
     def tan(self):
         return math.tan(self.value)

>     def withinRange(self, angle, range):
>         """
>         angle is within range of self
>         """
>         return (self._value < angle._value + range) and (self._value >
> angle._value - range)

I think this is more readable:

	return angle.value-range < self.value < angle.value+range

> class Point2D (object):

Same as above, replace __init__ by __new__. You may inherit from tuple  
instead, and get some basic methods already implemented.

>     length = property(lambda self: return math.sqrt(self.x*self.x +
> self.y*self.y), lambda x: self._immutableError())

Using math.hypot is safer in some circunstances.

>     def normalise(self):
>         return Point2D(self.x/self.length, self.y/self.length);
>     def translate(self, other) {
>         return self + other
>     }

I'd use "normalised", "translated", etc. because they return a *new*  
object, instead of modifying self.
(You forgot to remove some braces, I presume...)

-- 
Gabriel Genellina

From rodmena.com at gmail.com  Mon Dec 10 06:08:50 2007
From: rodmena.com at gmail.com (farsheed)
Date: Mon, 10 Dec 2007 03:08:50 -0800 (PST)
Subject: Best way to protect my new commercial software.
References: <8c9a903b-7f57-4a90-883a-5bb1f06fedf6@e6g2000prf.googlegroups.com>
	<46303db5-7cd0-4424-9834-3458c4061229@w56g2000hsf.googlegroups.com> 

	<9e1711a2-688b-4643-a276-659163e867f1@d61g2000hsa.googlegroups.com>
Message-ID: <9771eb4a-fae5-472d-9cba-9a09ae077e3d@x69g2000hsx.googlegroups.com>

So you say there is not any trusted way?

From larry.bates at websafe.com  Tue Dec 11 18:30:44 2007
From: larry.bates at websafe.com (Larry Bates)
Date: Tue, 11 Dec 2007 17:30:44 -0600
Subject: Elementtree find problem
In-Reply-To: 
References: 
Message-ID: 

Willemsjunk at gmail.com wrote:
> I tried the tips I found in other posts but I still get 'none' back:
> 
> import easygui as eg
> import xml.etree.ElementTree as ET
> import sys
> 
> #kml source is:
> #
> #
> #  
> #    Simple placemark
> #    Attached to the ground. Intelligently places itself
> #       at the height of the underlying terrain.
> #    
> #      -122.0822035425683,37.42228990140251,0 coordinates>
> #    
> #  
> #
> 
> 
> #select a file and open it in python
> f_name=eg.fileopenbox("select kml file", "Select kml file")
> f_kml=open(f_name,'r')
> 
> #parse and create Elementtree and go to root
> tree=ET.parse(f_kml)
> kml=tree.getroot()
> 
> #look for description
> coord= kml.find('.//description')
> print coord
> 
> 
> _______________________
> 
> the result is 'None' ...
> 
> If I print out the kml with tostring I can see the entire file and to
> me the XPath string also seems correct
> 
> any idea?

This works:

 >>> url='http://earth.google.com/kml/2.2'
 >>> coord=kml.find('{%s}Placemark/{%s}Point/{%s}coordinates' % \
                     (url, url, url)).text
 >>> print coord
'-122.0822035425683,37.42228990140251,0'

-Larry

From thorsten at thorstenkampe.de  Sat Dec 29 10:44:28 2007
From: thorsten at thorstenkampe.de (Thorsten Kampe)
Date: Sat, 29 Dec 2007 15:44:28 -0000
Subject: i18n questions
References: 
Message-ID: 

* Donn Ingle (Fri, 28 Dec 2007 20:01:48 +0200)
> I'm 100% new to this i18n lark and my approach so far has been to create
> a .mo file per module in my app. 
>  My thinking was, why load one huge .mo file when a single module only needs
> a few strings? Since then, it seems, I have made the wrong decision.
> 
> For example I have module A that imports module B. Each one does this:
> 
>     gettext.install( domain, localedir, unicode = True )
>     lang = gettext.translation(domain, localedir, languages = [ loc ] )
>     lang.install(unicode = True )
> 
> (where doman is the name of the module, so "A" and "B")
> 
> The problem is that domain "A" loads and then import B happens and so
> the "lang" reference (I think) gets replaced by domain "B" -- the result is
> that module A can only translate strings that are in domain "B".
> 
> How does one 'merge' gettext.translations objects together? Or is that
> insane?
> 
> What's the best way to handle a project with multiple domain.mo files?

I can give you just general advice how I dealt with 
internationalization in my example app. "scipt" is the main app with 
its own mo file and imports optparse which has again its own mo file

#
gettext.textdomain('optparse')
gettext.install('script', unicode = True)

from optparse import OptionParser, \
                     OptionGroup
# [...]

Thorsten

From gherron at islandtraining.com  Thu Dec 13 04:42:38 2007
From: gherron at islandtraining.com (Gary Herron)
Date: Thu, 13 Dec 2007 01:42:38 -0800
Subject: what the heck does this mean?
In-Reply-To: <104510.96718.qm@web57307.mail.re1.yahoo.com>
References: <104510.96718.qm@web57307.mail.re1.yahoo.com>
Message-ID: <4760FE8E.8060101@islandtraining.com>

katie smith wrote:
> Traceback (most recent call last):
>   File "C:\Python25\empire\Empire Strategy.pyw", line 322
>     Maty = Searched(number)
> TypeError: 'list' object is not callable
>  
> My list is NewMap1 =[0,0,0,0,0,0,2,0,2,2,3,2,0,0,0,0]
>  
> so Maty Searched(number is supposed to give me 0 when
>         Search = "NewMap"
>         number = 0
>         bignum = 1
>         bignumer = repr(bignum)
>         Searching = Search+bignumer
>         Searched = eval(Searching)
>         Maty = Searched[number]
>  
> instead i get that error whats up? i thought it is suppose to give me
> NewMap1(0).when I print it it works fine  and gives me the result 0
> but when I go to save the number as Maty-(randomletters) it keeps
> giving me the stupid error.
You're not telling us something important.   When I execute the
statements you give, I do indeed get 0 for the value of Maty, which is
what you expect -- so I see no problem.

But then in your next claim, you say "save the number as
Maty-(randomletters)".  What does that mean?  What Python statement are
you running?  What means "save"?  What is "randomletters"? 

The error you are getting is usually gotten by code that tries to treat
a variable containing a list as a function.  Example:

someList = [1,2,3]
someList(99)

Traceback (most recent call last):
  File "", line 1, in 
TypeError: 'list' object is not callable

Gary Herron

>  
> please help
>  
> Ps: rather than doing in your head making a test prgram to run exactly
> that might be better
>
> ------------------------------------------------------------------------
> Looking for last minute shopping deals? Find them fast with Yahoo!
> Search.
> 

From mail at timgolden.me.uk  Fri Dec  7 08:59:40 2007
From: mail at timgolden.me.uk (Tim Golden)
Date: Fri, 07 Dec 2007 13:59:40 +0000
Subject: eclipse pywintypes.com_error
In-Reply-To: 
References: <64ee0bd0-f39f-4906-af4d-b39cb04696cf@b15g2000hsa.googlegroups.com>	

Message-ID: <475951CC.9050008@timgolden.me.uk>

gurkan wrote:
> i have treid the script :
> 
> #import active_directory
> import win32com.client
> 
> win32com.client.Dispatch ("ADODB.Command")
> #me = active_directory.find_user ()
> 
> #print me
> 
> again i got the error :
> 
> Traceback (most recent call last):
>   File "H:\dev\eclipse\workspace\pyProject\src\pyPackage
> \adDeneme3.py", line 4, in 
>     win32com.client.Dispatch ("ADODB.Command")
>   File "E:\Python25\Lib\site-packages\win32com\client\__init__.py",
> line 95, in Dispatch
>     dispatch, userName =
> dynamic._GetGoodDispatchAndUserName(dispatch,userName,clsctx)
>   File "E:\Python25\Lib\site-packages\win32com\client\dynamic.py",
> line 98, in _GetGoodDispatchAndUserName
>     return (_GetGoodDispatch(IDispatch, clsctx), userName)
>   File "E:\Python25\Lib\site-packages\win32com\client\dynamic.py",
> line 78, in _GetGoodDispatch
>     IDispatch = pythoncom.CoCreateInstance(IDispatch, None, clsctx,
> pythoncom.IID_IDispatch)
> pywintypes.com_error: (-2147024770, 'The specified module could not be
> found.', None, None)

I don't think it's that the CoCreateInstance can't be found:
that's a COM error you're seeing and it means that the
IDispatch mechanism can't find the "ADODB.Command" you're
looking for. If I get the chance I'll try to find a Vista
machine to find out what the equivalent is. If anyone on
the list has Vista and/or knows what the score is here,
please let me know.

To double-check, Gurkan, could you open the Registry and
browse to HKEY_CLASSES_ROOT and look for a key ADODB.Command.
I presume it's not present.

TJG

From mail at timgolden.me.uk  Fri Dec  7 10:21:10 2007
From: mail at timgolden.me.uk (Tim Golden)
Date: Fri, 07 Dec 2007 15:21:10 +0000
Subject: Converting Excel time-format (hours since 1.1.1901)
In-Reply-To: <716882bb-ab0f-4eb5-b577-1f12372d7b93@w56g2000hsf.googlegroups.com>
References: <6c5cc79e-a121-45c5-9a97-b8564ca9f3bf@l16g2000hsf.googlegroups.com>
	<716882bb-ab0f-4eb5-b577-1f12372d7b93@w56g2000hsf.googlegroups.com>
Message-ID: <475964E6.7020708@timgolden.me.uk>

mensanator at aol.com wrote:
> On Dec 7, 7:20?am, Dirk Hagemann  wrote:
>> Hello,
>>
>> From a zone-file of a Microsoft Active Directory integrated DNS server
>> I get the date/time of the dynamic update entries in a format, which
>> is as far as I know the hours since january 1st 1901.

If it *is* then the easiest way is this:

import datetime
print datetime.date (1901, 1, 1) + datetime.timedelta (hours=3566839)

But, as someone pointed out, that puts you somewhere in 2300.
Where are you getting the 1901 from (and the hours, for that
matter). If it's based, as AD dates are, for example, from 1601,
then the calc becomes:

import datetime
print datetime.date (1601, 1, 1) + datetime.timedelta (hours=3566839)

which looks more realistic. But frankly I'm guessing.

TJG

From mario at ruggier.org  Fri Dec 28 06:00:59 2007
From: mario at ruggier.org (mario)
Date: Fri, 28 Dec 2007 03:00:59 -0800 (PST)
Subject: unicode(s, enc).encode(enc) == s ?
References: <5e49e7e6-f2b3-4c9f-9dec-e5f01f12d59a@e4g2000hsg.googlegroups.com>
	<4773f0de$0$15825$9b622d9e@news.freenet.de>
Message-ID: <7cb20641-ab33-4818-a911-80c684cb9792@q77g2000hsh.googlegroups.com>

On Dec 27, 7:37 pm, "Martin v. L?wis"  wrote:
> Certainly. ISO-2022 is famous for having ambiguous encodings. Try
> these:
>
> unicode("Hallo","iso-2022-jp")
> unicode("\x1b(BHallo","iso-2022-jp")
> unicode("\x1b(JHallo","iso-2022-jp")
> unicode("\x1b(BHal\x1b(Jlo","iso-2022-jp")
>
> or likewise
>
> unicode("\x1b$@BB","iso-2022-jp")
> unicode("\x1b$BBB","iso-2022-jp")
>
> In iso-2022-jp-3, there are even more ways to encode the same string.

Wow, that's not easy to see why would anyone ever want that? Is there
any logic behind this?

In your samples both of unicode("\x1b(BHallo","iso-2022-jp") and
unicode("\x1b(JHallo","iso-2022-jp") give u"Hallo" -- does this mean
that the ignored/lost bytes in the original strings are not illegal
but *represent nothing* in this encoding?

I.e. in practice (in a context limited to the encoding in question)
should this be considered as a data loss, or should these strings be
considered "equivalent"?

Thanks!

mario

From gagsl-py2 at yahoo.com.ar  Sun Dec 30 08:55:49 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Sun, 30 Dec 2007 05:55:49 -0800 (PST)
Subject: difference between `x in list` and `list.index(x)` for instances 
	of a new-style class
References:  
	<288b260d-96b9-43ef-9218-d21b44b7f8fc@s19g2000prg.googlegroups.com> 

Message-ID: <38b983b6-b4bc-4fcc-bf19-f810e3c52e00@f3g2000hsg.googlegroups.com>

On 30 dic, 06:24, Riccardo Murri  wrote:
> bpgbai... at gmail.com writes:
>
> >> ? (Pydb) p graph == self.base[27] ?
> >> ? True
> >> ? (Pydb) p graph in self.base
> >> ? True
> >> ? (Pydb) self.base.index(graph)
> >> ? *** ValueError: list.index(x): x not in list

> > Looking at the source for both methods, they only
> > use the __eq__ operator, but there is a slight difference: while one
> > evaluates list[i]==x, the other reverses the operands. If your __eq__
> > is not reflexive, that could explain the difference.
>
> That was indeed the reason: a bug in Graph.__eq__ broke reflexivity in
> certain cases.

Combined with some other WTF bugs I've found at work, lately I feel
more like a detective than a software developer :)

--
Gabriel Genellina

From wdrpower at hotmail.com  Sat Dec 15 03:20:29 2007
From: wdrpower at hotmail.com (Michael Lalonde)
Date: Sat, 15 Dec 2007 00:20:29 -0800 (PST)
Subject: mike lalonde
Message-ID: 

Michael Lalonde traveled with Mr Harnwell in an icy cave and went
around killing rats with a jackhammer because his leg hurt and fell
violently ill. Michael Lalonde just dodged three bullets, he went
around killing rats with plastic bombs and to the disappointment of
some he got the girl, the treasure and a nasty rash.
Mike Lalonde was owed money by a man in a wheelchair after winning the
lottery and got locked in a room full of greasy meat very happily and
all hell broke loose which made him cry, he stole a car and as if it
were a miracle he escaped narrowly and hitch-hiked all the way home.
Michael Lalonde was owed money by John Howard down the back of Galston
High and fell into the eternal pit of hell but it was all an accident
and fell violently ill. Michael Lalonde just dodged three bullets, he
blew up a truck with a hand grenade and with relative ease he got the
girl, the treasure and a nasty rash.
mike Lalonde got a letter bomb from his mum in an icy cave and fell
into the eternal pit of hell very happily and all hell broke loose
which started a party, he made a giant leap across the ravine and with
the help of $120 000 worth of special effects he defeated his enemy
and the world was safe again... but for how long?
mike Lalonde traveled with an axe murderer down the back of Galston
High and got locked in a room full of greasy meat for no reason at all
and went for a long walk through the park. mike Lalonde just dodged
three bullets, he made a run for it and as he nearly gave up all hope
he got the money and lived the rest of his life in Tokalue
Michael Lalonde was owed money by an axe murderer in the fire place
and almost got killed by an army of birds because his leg hurt and a
heated argument arosewhich got him in a lot of trouble, he felt a
sudden ray of hope and as if it were a miracle he failed the mission
and the bad guys made it away with the gold.
Michael Lalonde saw a movie made by a wild dog in the fire place and
got locked in prison because he felt like it and fell violently
illwhich got him in a lot of trouble, he made a run for it and with
the help of $120 000 worth of special effects he got the girl, the
treasure and a nasty rash.
Danny Lalonde got a letter bomb from an axe murderer after winning the
lottery and fell into the eternal pit of hell because he felt like it
and chased a bunny which completely freaked him out he jumped out of
the way as the roof collapsed and to the surprise of the audience he
failed the mission and the bad guys made it away with the gold.
mike Lalonde fought his enemy: Mr Harnwell on a pirate ship and got
locked in prison because he had no sleep the night before and decided
to sleep it off. Then mike Lalonde ran around like a lunatic, he shot
all the bad guys and to the disappointment of some he accidently
tripped and smashed his face against a rock.

From no at no.no  Tue Dec  4 08:36:20 2007
From: no at no.no (Zepo Len)
Date: Tue, 04 Dec 2007 15:36:20 +0200
Subject: read lines
References: 

Message-ID: 

> Your regex is not working correctly I guess, I don't even know why you  
> are using a regex, something like this would work just fine:
>
> import sys
> nums = [float(line.split(' -')[1]) for line in open(sys.argv[1])]
> print 'min=', min(nums), 'max=', max(nums)

Sorry, that should be line.split() - didn't realise those were negative  
numbers.

From timr at probo.com  Tue Dec 25 01:20:36 2007
From: timr at probo.com (Tim Roberts)
Date: Tue, 25 Dec 2007 06:20:36 GMT
Subject: Python DLL in Windows Folder
References: <533b7d320712230652w6bd4e90dv905d7112d337d0fd@mail.gmail.com>

	<533b7d320712231027h26623fffi3b471b6c85873a64@mail.gmail.com>

Message-ID: 

Ross Ridge  wrote:

>Chris Mellon  wrote:
>>What the python installer is doing is the Right Thing for making the
>>standard python dll available to third party applications.
>>Applications that want a specific version of a specific DLL should use
>>the mechanisms available for doing so, instead of relying on there
>>being a specific version of the python dll in the windows folder. This
>>is just general best practice on Windows.
>
>No, it's not best practice for an application install any of its files
>in the Windows system directory.

Python is more than an application.  It's a development tool, and its DLLs
are needed by any of the Python applications I create.  I disagree with
your assertion.

>The system directory is ment only for drivers and system files.

In your view, what disqualifies python24.dll as a "system file"?  The fact
that it wasn't produced by Microsoft?

>Installing application DLLs in the system directory is something that
>should only be done for backwards compatiblity.

Deployment of Python applications is much easier when python24.dll is
located there.   That has to weigh in the equation.
-- 
Tim Roberts, timr at probo.com
Providenza & Boekelheide, Inc.

From ismail at pardus.org.tr  Wed Dec 19 10:55:49 2007
From: ismail at pardus.org.tr (Ismail =?utf-8?q?D=C3=B6nmez?=)
Date: Wed, 19 Dec 2007 17:55:49 +0200
Subject: How to generate pdf file from an html page??
In-Reply-To: <18281.15201.382459.804155@terry.local>
References: 
	<13mieavg35e92@corp.supernews.com>
	<18281.15201.382459.804155@terry.local>
Message-ID: <200712191755.49697.ismail@pardus.org.tr>

Wednesday 19 December 2007 17:40:17 tarihinde Terry Jones ?unlar? yazm??t?:
> >>>>> "Grant" == Grant Edwards  writes:
>
> Grant> On 2007-12-19, abhishek  wrote:
> >>> > Hi everyone, I am trying to generate a PDF printable format file from
> >>> > an html page. Is there a way to do this using python. If yes then
> >>> > which library and functions are required and if no then reasons why
> >>> > it cant be done.
> >>>
> >>> Here's one way:
> >>>
> >>> ------------------------------html2pdf.py------------------------------
> >>>----------- #!/usr/bin/python
> >>> import os,sys
> >>>
> >>> inputFilename,outputFilename = sys.argv[1:3]
> >>>
> >>> os.system("w3m -dump %s | a2ps -B --borders=no | ps2pdf - %s" %
> >>> (inputFilename,outputFilename))
>
> Note that this is highly insecure. outputFilename could be passed e.g., as
>
>   /tmp/file.pdf; rm -fr /home/abhishek

And the solution is to use subprocess [0] instead of os.system()

[0] http://docs.python.org/lib/module-subprocess.html

Regards,
ismail

-- 
Never learn by your mistakes, if you do you may never dare to try again.

From nagle at animats.com  Fri Dec 21 12:04:10 2007
From: nagle at animats.com (John Nagle)
Date: Fri, 21 Dec 2007 09:04:10 -0800
Subject: It's ok to __slots__ for what they were intended
In-Reply-To: 
References: <3ebb7816-c3ad-44ed-8aed-6c026c3c2b61@d4g2000prg.googlegroups.com>			<0829587b-f3a1-4f77-86a1-163e7bcc54d2@l32g2000hse.googlegroups.com>	

Message-ID: <476bf150$0$36343$742ec2ed@news.sonic.net>

Chris Mellon wrote:
> On 20 Dec 2007 19:50:31 -0800, Aahz  wrote:
>> In article <0829587b-f3a1-4f77-86a1-163e7bcc54d2 at l32g2000hse.googlegroups.com>,
>> Carl Banks   wrote:
>>>> Someday I'll have time to write up a proper page about why you shouldn't
>>>> use __slots__....

> Barking out your blanket warning in a thread on *the exact use case
> slots were implemented to address* just makes you look like a mindless
> reactionary. Stick to posting your warning in threads where people ask
> how to stop "other people" from setting attributes on "their"
> instances.

     Agreed.

     I'd like to hear more about what kind of performance gain can be
obtained from "__slots__".  I'm looking into ways of speeding up
HTML parsing via BeautifulSoup.  If a significant speedup can be
obtained when navigating large trees of small objects, that's worth
quite a bit to me.

				John Nagle
				SiteTruth

From tenax.raccoon at gmail.com  Wed Dec 19 12:34:50 2007
From: tenax.raccoon at gmail.com (Jason)
Date: Wed, 19 Dec 2007 09:34:50 -0800 (PST)
Subject: 3D plotting with python 2.5 on win32
References: <4ea5d1e6-0f25-4006-b72a-42ba2ac5b8e1@e23g2000prf.googlegroups.com>
Message-ID: <02fa9e44-2e0c-4d8b-b438-5cd2b590e720@w40g2000hsb.googlegroups.com>

On Dec 19, 7:15 am, anton  wrote:
> Hi,
>
> I would like to know if some of you knows a
>
>  - working
>
>  - actual
>
>  - out of the box (for me: binaries available)
>
> Package/Lib to do 3D plotting out of the box.
>
> I know  matplotlib.
>
> There is MayaVi from enthon but you need to use their python (2.4.3),
> all other stuff need picking sources etc.
>
> IVuPy-0.1 seems to be abandonware, and there are no binaries.
>
> I don't get qwtplot3d-0.2.7 to compile on my pc, it seems you need the
> commercial
> qt 4.33 (with opensource qt 4.3.3 I doesnt work).
>
> Actually there is a big list on python org of 3D software, but I need
> only plotting facility (like Matlab for example), and some/most of
> the listed projects seem not be up to date (still based on python 2.4,
> like PyOpenGL where you get binaries only for python 2.4,
> seems to be abandonware too, sigh).
>
> Thanks for a hint :-)

PyOpenGL isn't abandonware.  Python 2.5 comes with the ctypes module
[1], so there isn't any need for a binary wrapper module anymore.

Under 2.5, all pure "wrapper" binary modules are unnecessary.  They
can work cross-platform from pure Python, calling directly into the C
function code.  Trust me, this is an excellent improvement.

PyOpenGL probably too low-level for what you want, but it isn't dead
yet.  (It's just pining for the symbol table.)

  --Jason

[1] http://docs.python.org/lib/module-ctypes.html

From mkevac at gmail.com  Sat Dec 22 10:02:40 2007
From: mkevac at gmail.com (Kevac Marko)
Date: Sat, 22 Dec 2007 07:02:40 -0800 (PST)
Subject: Twisted: UDP socket not closed.
Message-ID: 

Hi.

I have to send UDP packets very often. Approx twice in a second.
But socket is not closed after sending packet. So soon i bump into
open sockets\files limit.
How to close socket after sending data?

Python 2.5, Twisted

class DataClient(DatagramProtocol):

    def __init__(self, address, datagram = "PONG"):
        self.address, self.datagram = address, datagram

    def startProtocol(self):
        self.transport.socket.setsockopt(socket.SOL_SOCKET, \
                socket.SO_BROADCAST, True)
        self.transport.connect(self.address[0], self.address[1])
        self.sendDatagram()

    def sendDatagram(self):
        self.transport.write(self.datagram)
        debug("Data client: Sending to %s" % repr(self.address))

while True:
    clientprotocol = DataClient(("255.255.255.255", 5999), data)
    reactor.listenUDP(0, clientprotocol).stopListening()

knight at rknb:~$ ls -la /proc/15429/fd/ | wc -l
43
knight at rknb:~$ ls -la /proc/15429/fd/ | wc -l
44
knight at rknb:~$ ls -la /proc/15429/fd/ | wc -l
44
knight at rknb:~$ ls -la /proc/15429/fd/ | wc -l
44
knight at rknb:~$ ls -la /proc/15429/fd/ | wc -l
45
knight at rknb:~$ ls -la /proc/15429/fd/ | wc -l
45
knight at rknb:~$ ls -la /proc/15429/fd/ | wc -l
46

Thanks in advance.

From anne.nospam01 at wangnick.de  Mon Dec 31 07:06:31 2007
From: anne.nospam01 at wangnick.de (anne.nospam01 at wangnick.de)
Date: Mon, 31 Dec 2007 04:06:31 -0800 (PST)
Subject: Unexpected __metaclass__ method behavior
References: <2273796e-87c6-4100-a5b5-1c6afa32a276@i29g2000prf.googlegroups.com>

Message-ID: 

Well, you see, I have some database functions that deal with "things"
which are either classes or instances thereof. I though polymorphism
would be a nice way to handle them identically, like:

def do(thing): thing.Foo()
do(t)
do(Test)

But never mind, I now understand that Test.__dict__ can contain only
one entry for 'Foo', and that this must be matched.

Kind regards,
Sebastian

From jigisbert.etra-id at grupoetra.com  Wed Dec  5 02:36:19 2007
From: jigisbert.etra-id at grupoetra.com (Jose Ignacio Gisbert)
Date: Wed, 5 Dec 2007 08:36:19 +0100
Subject: RV: Receiving messages blocks all :-(
Message-ID: <001501c83711$88b4a150$2000a8c0@depid.local>

First, sorry for sending this mail to this list, I know this is off-topic,
but xmpppy-devel mailing list is out of work :-(  If someone uses xmpppy,
please try to answer me, or at least give me a more adequate mailing list,
please. Thank you.

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

 Hi all,

I am a newby in xmppy, and I want to make a very simple messaging jabber
client. As I read from different tutorials, it seems very easy, in fact, I
can send messages to other jabber clients from my ?poor? application, but
the problem appears when I try to receive messages. I do more or less what
Sebastian Moors explains in his ?xmpppy: a practical guide?, i.e (code
fragment):

def StepOn(conn):

    try:

        conn.Process(1)

    except KeyboardInterrupt:

        return 0

    return 1

def GoOn(conn):

    while StepOn(conn):

        pass

cl=xmpp.Client(jid.getDomain(),debug=[])

cl.connect()

cl.auth(jid.getNode(),jidparams['password'])

cl.sendInitPresence()

cl.RegisterHandler('message',messageCB)

cl.RegisterHandler('presence',presenceCB)

GoOn(cl)

But when my application enters in GoOn loop, it completely freezes (I have
to shut down it by force). Anyone knows why or knows another solution for
receiving messages?, I?m using Windows but I don?t think it is the problem.

Thanks in advance, best regards,

_______________________________
Jos? Ignacio Gisbert Sanus

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From vladimir at greenmice.info  Tue Dec 18 03:53:19 2007
From: vladimir at greenmice.info (Vladimir Rusinov)
Date: Tue, 18 Dec 2007 11:53:19 +0300
Subject: Rounding
In-Reply-To: <567047.82204.qm@web57302.mail.re1.yahoo.com>
References: <567047.82204.qm@web57302.mail.re1.yahoo.com>
Message-ID: 

On 12/15/07, katie smith  wrote:
>
> if i have a number 6.345 and i wanted it to be 6 without subtracting .345
> because it won't always be .345 what do i do?
>
> how do i round to the nearest whole number. Or in this case round down. Is
> there an easy way to round down to the nearest whole number?

init() ?

-- 
Vladimir Rusinov
GreenMice Solutions: IT-??????? ?? ???? Linux
http://greenmice.info/
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From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Tue Dec  4 11:02:03 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Tue, 04 Dec 2007 17:02:03 +0100
Subject: Escaping the semicolon?
In-Reply-To: <7dd5d462-b8a3-4260-92b9-3c75cd75995f@x69g2000hsx.googlegroups.com>
References: <7dd5d462-b8a3-4260-92b9-3c75cd75995f@x69g2000hsx.googlegroups.com>
Message-ID: <475579fb$0$5448$426a74cc@news.free.fr>

Nick a ?crit :
> Hi all,
> 
> Is this expected behavior?
> 
>>>> s = '123;abc'
>>>> s.replace(';', '\;')
> '123\\;abc'

 >>> print s.replace(';', '\;')
123\;abc

> I just wanted a single backslash.

You got it - even if it's not obvious !-)

> I can see why this probably happens
> but i wondered if it is definitely intentional.

 >>> s2 = '123\;abc'
 >>> s2
'123\\;abc'
 >>> print s2
123\;abc
 >>> list(s2)
['1', '2', '3', '\\', ';', 'a', 'b', 'c']

As you can see, '\\' is counted as a single character !-)
Since the backslash is the escape character, you need to escape it to 
have a litteral backslash:

 >>> s3 = '\'
   File "", line 1
     s3 = '\'
            ^
SyntaxError: EOL while scanning single-quoted string
 >>>

From rocco.rossi at gmail.com  Fri Dec 14 10:25:42 2007
From: rocco.rossi at gmail.com (rocco.rossi at gmail.com)
Date: Fri, 14 Dec 2007 07:25:42 -0800 (PST)
Subject: Loops and things
Message-ID: <41b40fae-5ca7-4823-851d-bba2aaca3bcd@t1g2000pra.googlegroups.com>

I was wondering how and if it's possible to write a loop in python
which updates two or more variables at a time. For instance, something
like this in C:

for (i = 0, j = 10; i < 10 && j < 20; i++, j++) {
    printf("i = %d, j = %d\n", i, j);
}

So that I would get:

i = 0, j = 0
i = 1, j = 1
i = 2, j = 2
...
...
...
i = 9, j = 19

Can this be done in Python?

Thanks.

From jfabiani at yolo.com  Thu Dec 20 10:44:19 2007
From: jfabiani at yolo.com (johnf)
Date: Thu, 20 Dec 2007 07:44:19 -0800
Subject: where is uno?
Message-ID: 

I'm using SUSE 10.3 have installed OpenOffice Python interface from the
distro DVD.  But still I need help because I can't "import uno".  And
that's because it's not in my site-packages.  

I read about how to use it and have reviewed code that uses it but no where
did any of the articles explain where to retrieve the actual 'uno' py
package.

Can someone provide a hint?

Johnf

From matthieu.brucher at gmail.com  Tue Dec 18 03:23:07 2007
From: matthieu.brucher at gmail.com (Matthieu Brucher)
Date: Tue, 18 Dec 2007 09:23:07 +0100
Subject: OpenOpt install
In-Reply-To: 
References: <65e61980-a21b-4ba2-81f2-a2c23ccb43f2@1g2000hsl.googlegroups.com>

	<89ecef85-b670-40ab-bc8a-74271ff4cff0@y5g2000hsf.googlegroups.com>

Message-ID: 

Hi,

My solution was the correct way to go, IIRC, only a few changes were to be
done so that those files were detected correctly (I think there were some
__init__.py files that were not present this may have to do with the fact
that you add a lot of additional paths in sys.path when you load openopt,
but I already told you we should simplify this).

Matthieu

2007/12/18, dmitrey :
>
> When earlier OpenOpt versions had been installed there were no
> compiled pyc-files (in destination directory). I called to mailing
> list but no obvious receipt had been achieved. Matthieu had done some
> changes but it yielded other mistakes (no some py-files detected or
> kind of), so I had removed those changes and write my own, for to have
> OO py-files being compiled when installed, because next time when they
> will be run user may not have root permissions, so he will recompile
> source files each time OO starts.
>
> On Dec 17, 10:27 pm, Robert Kern  wrote:
> > dmitrey wrote:
> > > Use
> > > python setup.py install
> >
> > People should be able to run the distutils commands independently.
> >
> > What are you trying to achieve with this block of code that follows the
> setup()
> > call?
> >
> >     new_name = 'tmp55'
> >     os.rename('scikits', new_name)
> >     newPath = []
> >     for directory in sys.path:
> >         if not 'scikits' in directory: newPath.append(directory)#
> something
> > wrong with list.remove()
> >     sys.path = newPath
> >     import scikits
> >     reload(scikits)
> >     Path = scikits.__path__[0]
> >     NewPath = os.path.join(Path, 'openopt')
> >     rmtree(NewPath, True) # True means ignore errors
> >     copytree(os.path.join(os.path.curdir, new_name, 'openopt'), NewPath)
> >     NewPath = Path
> >     compileall.compile_dir(NewPath)
> >
> >     os.rename(new_name, 'scikits')
> >
> > This just looks like a really bad idea.
> >
> > --
> > Robert Kern
> >
> > "I have come to believe that the whole world is an enigma, a harmless
> enigma
> >  that is made terrible by our own mad attempt to interpret it as though
> it had
> >  an underlying truth."
> >   -- Umberto Eco
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>

-- 
French PhD student
Website : http://matthieu-brucher.developpez.com/
Blogs : http://matt.eifelle.com and http://blog.developpez.com/?blog=92
LinkedIn : http://www.linkedin.com/in/matthieubrucher
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From yozara at terra.es  Tue Dec  4 03:38:33 2007
From: yozara at terra.es (Zara)
Date: Tue, 04 Dec 2007 09:38:33 +0100
Subject: "Python" is not a good name, should rename to "Athon"
References: 
	<78bdd499-a263-4c68-8e43-e3e59b111c7e@a39g2000pre.googlegroups.com>
	<5rcq90F13re18U1@mid.individual.net>

	<2bd39781-94e2-4d3d-b185-47a247d3acc2@d27g2000prf.googlegroups.com>
Message-ID: 

On Sat, 1 Dec 2007 13:40:10 -0800 (PST), "Russ P."
 wrote:

>On Dec 1, 12:47 pm, "J. Clifford Dyer"  wrote:
>> On Sat, 2007-12-01 at 12:10 -0800, Russ P. wrote:
>> > On Dec 1, 2:10 am, Bjoern Schliessmann > > mail-0306.20.chr0n... at spamgourmet.com> wrote:
>> > > Russ P. wrote:
>> > > > I agree that Python is not a good name for a programming language,
>>
>> > > Why not?
>>
>> > Think about proposing its use to someone who has never heard of it
>> > (which I did not too long ago). As the OP pointed out, a Python is a
>> > snake. Why should a programming language be named after a snake?
>>
>> That's not a persuasive argument.
>>
>> First of all, Python is named for a comedy troupe from England.  For
>> comparison, Perl is named for a knitting technique, Lisp is named for a
>> speech impediment, Ruby is named for a rock, Smalltalk is named for a
>> not-so-useful form of communication, and Java is named after a beverage
>> or an island.
>>
>> Which of those is a good name for a programming language by your
>> criterion?
>
>None. None of them are good names by my criteria. But then, a name is
>only a name. One of the few names I like is Pascal, because he was a
>great mathematician and scientist.
>
>After thinking about it a bit, here are examples of what I would
>consider a good name for a programming language:
>
>Newton#
>Newton*
>Newton+
>
>Newton was a great scientist, and his name is easy to spell and
>pronounce. The trailing character serves to disambiguate it from
>Newton in online searches. For shorthand in online discussions, N#,
>N*, or N+ could be used as aliases.
>
>Names of other great scientists, mathematicians, or computer
>scientists could also be used, of course. Take your pick.
>
>How about renaming Python3000?

I would never use the name of a mathematician for a procedural
language. Mathemathician names should be for funtional languages (such
as Haskell).

Procedural languages are flexible, they keep on tangling and getting
out of it, they like publicity:

Houdini

or, as suggested in other messages:

Houdini3

Best regards,

Zara

From lists at cheimes.de  Wed Dec 12 21:56:29 2007
From: lists at cheimes.de (Christian Heimes)
Date: Thu, 13 Dec 2007 03:56:29 +0100
Subject: Improvements to the Python core
In-Reply-To: 
References: 

Message-ID: <47609F5D.8040405@cheimes.de>

Paul Boddie wrote:
> Then you haven't been reading the right IRC channel recently. ;-)

What's the right channel? I'm on #python and #python-dev

> Indeed, but there's arguably a certain amount of deadlock around
> making unpatched, released versions of Python available in all these
> places, unless there's been some activity below the surface in the
> python-dev community on things like cross-compilation and not running
> distutils using the newly built Python executable (which, as I
> remember, was but one of the problems). Your point stands, naturally,
> but if there's potential for some real movement on some
> uncontroversial issues, and yet we see no movement, one remains
> skeptical about getting even slightly controversial improvements into
> vanilla CPython.

I don't get your point, especially when you talk about distutils. Please
elaborate.

(C)Python has a well known process to get new features or changes into
the language: Write a PEP, convince enough core developers and/or Guido,
implement the feature. I don't see a PEP about JIT in the list at
abouthttp://www.python.org/dev/peps/, do you? :]

Besides nobody is going to stop you from creating a fork. Christian
Tismer forked of stackless years ago. It's a successful branch with
useful additions to the language. It got never merged back because
Christian didn't feel right about it.

> Perhaps, but what would people prefer: yet more language bolt-ons or
> better performance?

I prefer a fast, stable and maintainable Python over a faster but unstable.

> It will be interesting to see what happens with recent work on
> improving threading within CPython. As for Psyco (which perhaps offers
> concurrency benefits only through instruction-level parallelism, if we
> briefly consider that topic), I can understand that just-in-time
> compilation can bring certain penalties in terms of memory usage and
> initialisation times (as Java virtual machines have demonstrated), but
> there's a compelling argument for trying to make such technologies
> available to CPython if they can be switched off and won't then incur
> such penalties. But we presumably return to the point of people not
> wanting to touch code that has anything to do with such features: a
> combination of social factors and the priorities of the group.

Rhamph is working on a GIL-less Python version. It may become a compile
time option someday in the future. Others have worked hard to speed up
other parts of Python. We have multiple pending patches which speed up
small parts of Python. Some are related to peephole (byte code
optimizations), other patches speed up attribute access on classes or
globals. The global lookup patch makes globals as fast as locals.

I've done my share for the poor Windows souls when I created the VS 2008
PCbuild9 directory and enabled PGO builds. PGO builds are about 10%
faster than ordinary VS 2008 builds. VS 2008 should be slightly faster
than VS 2003 but I can bench mark it on my machine.

In my opinion an optional JIT as compile time or startup option has good
chances to become part of the CPython implementation. You "only" have to
replace ceval.c ... :]

Christian

From mattb at wageslavery.org  Sat Dec  1 20:31:24 2007
From: mattb at wageslavery.org (Matt Barnicle)
Date: Sat, 1 Dec 2007 17:31:24 -0800 (PST)
Subject: python newbie - question about lexical scoping
In-Reply-To: <49832.75.62.111.233.1196556017.squirrel@webmail.wageslavery.org>
References: 

	<49832.75.62.111.233.1196556017.squirrel@webmail.wageslavery.org>
Message-ID: <50590.75.62.111.233.1196559084.squirrel@webmail.wageslavery.org>

>> On Dec 1, 4:47 pm, Matt Barnicle  wrote:
> aye yaye aye...  thanks for the pointers in the right direction..  i
> fiddled around with the code for a while and now i've reduced it to the
> *real* issue...  i have a class dict variable that apparently holds its
> value across instantiations of new objects..  the problem can be
> illustrated in the following much simpler code:
>
>>>> class foo():
> ...     bar = { 'baz': 'bing' }
> ...
>>>> a = foo()
>>>> a.bar
> {'baz': 'bing'}
>>>> a.bar['baz'] = 'bong'
>>>> a.bar
> {'baz': 'bong'}
>>>> b = foo()
>>>> b.bar
> {'baz': 'bong'}

ok, i see...  python has a concept i'm not accustomed to which i found
described here:

http://zephyrfalcon.org/labs/python_pitfalls.html
4. Class attributes vs instance attributes

so i'm sure what is going on is obvious to experienced python
programmers...  i'm not really sure how to get around this though.  i'll
need to spend some time on reworking our models code i guess...  i
inherited this from someone, and what he was trying to do was to set
default values for objects representing tables (in kind of a simple ORM
layer) and storing the values in a dict, and when the object is
instantiated, the table is queried and the default dict values are
overwritten.  so obviously this method is not going to work as such..

sorry for the misdirection, i didn't quite understand at first..

- m@

From arkanes at gmail.com  Thu Dec 13 13:54:44 2007
From: arkanes at gmail.com (Chris Mellon)
Date: Thu, 13 Dec 2007 12:54:44 -0600
Subject: python vs perl performance test
In-Reply-To: <3b1cef63-f1dc-466c-bf8c-7613fb4b0c3f@a35g2000prf.googlegroups.com>
References: <3b1cef63-f1dc-466c-bf8c-7613fb4b0c3f@a35g2000prf.googlegroups.com>
Message-ID: <4866bea60712131054g69abbc6ete6b205a7c4c8b568@mail.gmail.com>

On Dec 13, 2007 12:11 PM,   wrote:
> First, let me admit that the test is pretty dumb (someone else
> suggested it :) but since I am new to Python, I am using it to learn
> how to write efficient code.
>
> my $sum = 0;
> foreach (1..100000) {
>     my $str = chr(rand(128)) x 1024;
>     foreach (1..100) {
>         my $substr = substr($str, rand(900), rand(100));
>         $sum += ord($substr);
>     }
> }
> print "Sum is $sum\n";
>

> Basically, the script creates random strings, then extracts random
> substrings, and adds up the first characters in each substring. This
> perl script takes 8.3 secs on my box and it can probably be improved.
>
> When I first translated it to Python verbatim, the Python script took
> almost 30 secs to run.
> So far, the best I can do is 11.2 secs using this:
>
> from random import randrange
> from itertools import imap, repeat
> from operator import getitem, add, getslice
>
> result = 0
> zeros = [0]*100
> for i in xrange (100000):
>     s = [chr(randrange(128))] * 1024
>     starts = repeat(randrange(900), 100)
>     ends = imap(add, starts, repeat(randrange(1,100), 100))
>     substrs = imap(getslice, repeat(s, 100), starts, ends)
>     result += sum(imap(ord, imap(getitem, substrs, zeros)))
>
> print "Sum is ", result
>
> There's got to be a simpler and more efficient way to do this.
> Can you help?

Benchmarking is usually done to test the speed of an operation. What
are you trying to measure with this test? String slicing? Numerical
operations? Looping? You're doing all sorts of bogus work for no
reason. The use of randomness is also totally arbitrary and doesn't do
anything except make it harder to confirm the correctness of the test.
Is the ability to generate 0-length substrings (which perl claims have
an ordinal of 0) intentional?

For the record, taking the randomness out makes this take 4 seconds
for perl, and 6 seconds for a literal translation in python. Moving it
into a function drops the python function to 3.5 seconds.

From davidtweet at gmail.com  Sat Dec  1 22:21:28 2007
From: davidtweet at gmail.com (David Tweet)
Date: Sat, 1 Dec 2007 19:21:28 -0800
Subject: [OT] minimalist web server
In-Reply-To: 
References: 
	<7xy7cdke3g.fsf@ruckus.brouhaha.com>

Message-ID: <3fd0162e0712011921p115ed680s9a041a0f19d49ed4@mail.gmail.com>

Running this in Python should create a server running on localhost
port 80 that only serves blank pages:

import SimpleHTTPServer
import SocketServer

class MyHandler(SimpleHTTPServer.SimpleHTTPRequestHandler):
  def do_GET(self):
    print >> self.wfile, ""

server = SocketServer.TCPServer(("", 80), MyHandler)
server.serve_forever()

(also see http://effbot.org/librarybook/simplehttpserver.htm)

On Dec 1, 2007 7:02 PM, Daniel Fetchinson  wrote:
> > > I'm looking for the most minimalist web server ever that does nothing
> > > else than return a fixed static page for every request. Regardless of
> > > what the request is, it just needs to be an HTTP request to port 80,
> > > the web server should return always the same html document. What would
> > > be the best choice for this? The goal is of course to minimize system
> > > resources in terms of memory, cpu, etc, etc.
> >
> > If you're running linux, maybe you want tux.
> >
> > publicfile isn't exactly what you describe, but its description might
> > be of some interest:
> >
> > http://cr.yp.to/publicfile.html
>
>
> Thanks, tux looks good, the only problem is that one needs to
> recompile the kernel which I really don't want to do (so yes, I'm on
> linux). Publicfile seems to "know" already too much.
>
> The reason I need this is that my current best strategy to avoid ads
> in web pages is putting all ad server names into /etc/hosts and stick
> my local ip number next to them (127.0.0.1) so every ad request goes
> to my machine. I run apache which has an empty page for 404 errors so
> I'll just see that blank page for every ad. Now I guess apache is a
> pretty heavy weight guy so I'm looking for a lightweight alternative.
> Lighttpd, nginx and company are all too complex and "know" too much. I
> even considered just putting netcat into an infinite loop but I'm
> afraid if there is a security hole in netcat I might be screwed.
>
> Maybe now that I outlined a little more why I need this others can
> come up with more suggestions.
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>

-- 
-David

From robert.kern at gmail.com  Wed Dec 19 04:38:14 2007
From: robert.kern at gmail.com (Robert Kern)
Date: Wed, 19 Dec 2007 03:38:14 -0600
Subject: how to get string printed by PyErr_Print( )?
In-Reply-To: 
References: 
Message-ID: 

grbgooglefan wrote:
> PythonC API function PyErr_Print( ) prints an error string onto stderr
> if PyErr_Occurred() is true.
> I don't want to print this to stderr because my Python+C code is
> running daemon mode & won't have terminal / stderr.
> So, I want to retrieve the string which PyErr_Print( ) will print.
> E.g., PyErr_Print() printed following string when I tried to call
> setTuple with one extra argument
> Traceback (most recent call last):
>   File "", line 2, in isTacticSafe
> IndexError: tuple assignment index out of range
> 
> How do I get this error message in a local char* & use it for further
> error handling?
> 
> Also, is there any way to get an error number associated for these
> error conditions using some getError function on the object returned
> by PyErr_Occurred()?

PyErr_Print() will import the sys module and try to use whatever file-like
object is sys.stderr. Replace this with a StringIO or an open file object just
like you would for output from the Python level.

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
 that is made terrible by our own mad attempt to interpret it as though it had
 an underlying truth."
  -- Umberto Eco

From showell30 at yahoo.com  Sat Dec  8 15:37:42 2007
From: showell30 at yahoo.com (Steve Howell)
Date: Sat, 8 Dec 2007 12:37:42 -0800 (PST)
Subject: Newbie edit/compile/run cycle question
In-Reply-To: <475af655$0$28302$426a34cc@news.free.fr>
Message-ID: <700244.69501.qm@web33505.mail.mud.yahoo.com>

--- Bruno Desthuilliers
 wrote:

> MartinRinehart at gmail.com a ?crit :
> > I'm a java guy used to the effective edit/run
> cycle you get with a
> > good IDE.
> > 
> > Today I'm writing my first Python, but can't seem
> to find the way to
> > use Python's inherent edit/run cycle.
> > 
> 
> Use an IDE then. Or a real code editor like emacs -
> it's python-mode is 
> way more powerful than what I saw in any IDE.

Martin, for Python-specific IDEs, I recommend looking
at the following page, although I think you might want
to get some feedback from the list as well:

  http://c2.com/cgi/wiki?PythonIde

Having said that, I'm more in Bruno's camp that the
choice of an editor usually transcends Python.  I
prefer to use a powerful editor that's good for
working on several languages, as long as it has a good
Python mode.

There are a zillion powerful editors out there.  I've
been productive in EditPlus, MultiEdit, SlickEdit,
vim, and emacs, just to throw out a few examples.

I'm confident you'll find a solution that fits your
style, and you are obviously doing a good thing in
terms of optimizing edit/run cycle, as it's pretty key
to productivity.

      ____________________________________________________________________________________
Be a better friend, newshound, and 
know-it-all with Yahoo! Mobile.  Try it now.  http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ 

From victorsubervi at gmail.com  Fri Dec 14 09:50:26 2007
From: victorsubervi at gmail.com (Victor Subervi)
Date: Fri, 14 Dec 2007 10:50:26 -0400
Subject: [Plone-Users] Why Can't I Do This?
In-Reply-To: <4762955B.2080403@trueblade.com>
References: <4dc0cfea0712140624j3eee0726q893062d14107c595@mail.gmail.com>
	<4762955B.2080403@trueblade.com>
Message-ID: <4dc0cfea0712140650v6933439cq5638d2fffccd837c@mail.gmail.com>

Great! Thanks!

On Dec 14, 2007 10:38 AM, Eric Smith  wrote:

> Victor Subervi wrote:
> > Hi;
> > Why can't I do this?
> >
> >  >>> author = "By Juan Garcia"
> >  >>> if author[0:2] == "by " | "By " | "BY":
> > ...   author = author[3:]
> > ...
> > Traceback (most recent call last):
> >   File "", line 1, in ?
> > TypeError: unsupported operand type(s) for |: 'str' and 'str'
> >
>
> This is a python question, not a plone question.  The python logical or
> operator is "or", but for this you might want to use "in".  This code
> might point you in the right direction, although it's not a complete (or
> very good) solution:
>
> author = "By Juan Garcia"
> if author[0:2] in ["by", "By", "BY"]:
>     author = author[2:]
> print author
>
> -------------------------------------------------------------------------
> SF.Net email is sponsored by:
> Check out the new SourceForge.net Marketplace.
> It's the best place to buy or sell services
> for just about anything Open Source.
>
> http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace
> _______________________________________________
> Plone-Users mailing list
> Plone-Users at lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/plone-users
>
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From DustanGroups at gmail.com  Thu Dec 13 20:17:57 2007
From: DustanGroups at gmail.com (Dustan)
Date: Thu, 13 Dec 2007 17:17:57 -0800 (PST)
Subject: Python implementation of "include"
References: <44880.192.168.1.71.1197575420.webmail@192.168.1.71> 

Message-ID: 

> ll... at paisite.com wrote:
> > Hello,
>
> > I've been using the Python-based Karrigell web application framework.
> > It has the very handy word "include" that inserts a code file into
> > into the stream of execution. E.g. if myFile.py contains the code:
>
> > print "This is a message from myFile.py
"
>
> > and my script is:
>
> > print "Something
"
> > include "myFile.py"
> > print "Something more
"
>
> > The output would be:
>
> > Something
> > This is a message from myFile.py
> > Something more
>
> > Since I'm considering moving my application to a different web
> > application framework, I'd like to replace include with a pure python
> > construct. I've discovered several ways to do it, but they all seem
> > kludgy in one way or another. Is there a simple, elegant way to do this?

No. Python is not C. The closest you can get is:

from myFile import *
print some_variable_from_myFile

But instead, you should probably just import:

import myFile
print myFile.some_variable_from_myFile

From bj_666 at gmx.net  Mon Dec 17 09:36:17 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 17 Dec 2007 14:36:17 GMT
Subject: checking for negative values in a list
References: <9be8b3e1-e9c6-40ba-b104-9ca406ecff59@e6g2000prf.googlegroups.com>
Message-ID: <5snfr1F19o1laU4@mid.uni-berlin.de>

On Mon, 17 Dec 2007 06:20:23 -0800, vimal wrote:

>    i have a list of numbers
> 
>   say a = [1,-1,3,-2,4,-6]
> 
>   how should i check for negative values in the list

In [6]: a = [1, -1, 3, -2, 4, -6]

In [7]: any(n < 0 for n in a)
Out[7]: True

Ciao,
	Marc 'BlackJack' Rintsch

From lukasz.f24 at gmail.com  Wed Dec  5 04:43:49 2007
From: lukasz.f24 at gmail.com (lukasz.f24 at gmail.com)
Date: Wed, 5 Dec 2007 01:43:49 -0800 (PST)
Subject: Timezones in python
References: 

Message-ID: 

Thanks guys for your answers! I know those library's but I was
wondering is there something build-in for this simple convert convert.
I have to do it only from +4 to +0.

From fuck at spammer.sp  Sat Dec 29 14:15:39 2007
From: fuck at spammer.sp (Lorenzo Mainardi)
Date: 29 Dec 2007 19:15:39 GMT
Subject: Howto on callbacks, queues and good design patterns
References: <47766da0$0$2085$edfadb0f@dtext02.news.tele.dk>
Message-ID: <47769cdb$0$17944$4fafbaef@reader1.news.tin.it>

Nel mezzo del cammin di nostra vita, mi ritrovai con Michael Bernhard Arp
S?rensen che diceva:

> Hi there.
> 
> As a newbie, I need to learn about callbacks and queues(syntax and
> examples) working together.
> 
> At work we talk a lot about design patterns. Does any of you know a good
>   site about that or any good books from Amazon?
> 

Hello,
I think the best way to understanding queues and callbacks is to learn 
Twisted. That's a very big framework for asynchronous network 
programming; it's completely callback based.
For more info you should visit the Twisted Matrix website: http://
twistedmatrix.com/trac/ 
There also a good documentation, but it's a few embedded, so you need to 
looking for that with care:-)
Good 2008 and have fun!

-- 
"Le opinioni dei fanatici prescindono dai fatti"
python -c "print 'bG9ybWF5bmFAZ21haWwuY29t'.decode('base64')"

From showell30 at yahoo.com  Sun Dec  9 11:17:41 2007
From: showell30 at yahoo.com (Steve Howell)
Date: Sun, 9 Dec 2007 08:17:41 -0800 (PST)
Subject: reading list of list to a file
In-Reply-To: <14239876.post@talk.nabble.com>
Message-ID: <204118.16545.qm@web33507.mail.mud.yahoo.com>

--- caroliina  wrote:

> 
> i made a list of lists but i cant write it into a
> file. how do i get the
> first string in a sublist?
> -- 

Try doing this:

print list_of_lists
print list_of_lists[0]
print list_of_lists[0][0]
print list_of_lists[0][0][0]

It might give you some insight.  If you're still stuck
after that, it would help if you posted a little bit
of your code.  Good luck!

      ____________________________________________________________________________________
Looking for last minute shopping deals?  
Find them fast with Yahoo! Search.  http://tools.search.yahoo.com/newsearch/category.php?category=shopping

From bruno.42.desthuilliers at wtf.websiteburo.oops.com  Wed Dec 26 03:28:13 2007
From: bruno.42.desthuilliers at wtf.websiteburo.oops.com (Bruno Desthuilliers)
Date: Wed, 26 Dec 2007 09:28:13 +0100
Subject: how to generate html table from "table" data?
In-Reply-To: 
References: 
Message-ID: <4772109d$0$5194$426a34cc@news.free.fr>

petr.jakes.tpc at gmail.com a ?crit :
> Hi group,
> I would like to convert the output of the SQL query, or more generally
> I would like to convert any "table" data to the html table.

There's MoreThanOneWayToDoIt... from simple string formatting to a 
full-blown template engine.

> I would like to set some rules to format cells, columns or rows (font,
> colour etc.) of the html table, according to the values in the
> specific cells.

Markup should only convey semantic informations - presentation is best 
done using css. IOW : presentation-related stuff in the html should be 
restricted to css class declarations.

> Googling for a while I have found only this tool:
> http://pasko.net/PyHtmlTable/
> 
> Your tips to some other tools or/and your suggestion how to solve
> above mentioned will be very helpful.

As I said, wrt/ html generation, there are quite a lot of possible 
solutions - FWIW, generating an html table from a set of tabular data is 
nothing difficult. So without more information on the context, it's hard 
to give any valuable advice. Are you doing a web application ? If yes, 
you should already use a template engine, so just use it. Else, why is 
your application generating html at all ?

From bearophileHUGS at lycos.com  Thu Dec  6 10:42:34 2007
From: bearophileHUGS at lycos.com (bearophileHUGS at lycos.com)
Date: Thu, 6 Dec 2007 07:42:34 -0800 (PST)
Subject: multidimensional "arrays"
References: 
Message-ID: <56f116fa-3ac0-4833-bd1a-f3429a7454ad@s36g2000prg.googlegroups.com>

Horacius ReX:
> do you know how to do similar but in two dimensions ?

>>> nr = 3
>>> nc = 4
>>> [[None] * nc for _ in xrange(nr)]
[[None, None, None, None], [None, None, None, None], [None, None,
None, None]]

Bye,
bearophile

From chrisspen at gmail.com  Tue Dec 11 17:31:22 2007
From: chrisspen at gmail.com (Chris)
Date: Tue, 11 Dec 2007 14:31:22 -0800 (PST)
Subject: Matching XML Tag Contents with Regex
References: <38ea9cbc-a222-4c0f-ba2d-f6b415d02fb1@d27g2000prf.googlegroups.com>
	<4e09aece-f39f-4c5b-a966-ac6abfb3f7de@p69g2000hsa.googlegroups.com> 
	<3cdbc226-bb3a-4945-949b-a0ec28b0e5c0@e6g2000prf.googlegroups.com> 
	<5s8205F186vhuU1@mid.uni-berlin.de>
Message-ID: <55392af5-b474-4118-8346-f81185d6b231@b1g2000pra.googlegroups.com>

On Dec 11, 1:08 pm, "Diez B. Roggisch"  wrote:
> Chris wrote:
> > On Dec 11, 11:41 am, garage  wrote:
> >> > Is what I'm trying to do possible with Python's Regex library? Is
> >> > there an error in my Regex?
>
> >> Search for '*?' onhttp://docs.python.org/lib/re-syntax.html.
>
> >> To get around the greedy single match, you can add a question mark
> >> after the asterisk in the 'content' portion the the markup.  This
> >> causes it to take the shortest match, instead of the longest. eg
>
> >> <%(tagName)s\s[^>]*>[.\n\r\w\s\d\D\S\W]*?[^(%(tagName)s)]*
>
> >> There's still some funkiness in the regex and logic, but this gives
> >> you the three matches
>
> > Thanks, that's pretty close to what I was looking for. How would I
> > filter out tags that don't have certain text in the contents? I'm
> > running into the same issue again. For instance, if I use the regex:
>
> > <%(tagName)s\s[^>]*>[.\n\r\w\s\d\D\S\W]*?(targettext)+[^(%
> > (tagName)s)]*
>
> > each match will include "targettext". However, some matches will still
> > include , presumably from the tags which didn't contain
> > targettext.
>
> Stop using the wrong tool for the job. Use lxml or BeautifulSoup to parse &
> access HTML.
>
> Diez

I was hoping a simple pattern like .*text.* wouldn't be too
complicated for Regex, but now I'm starting to agree with you. Parsing
the entire XML Dom would probably be a lot easier.

From roy at panix.com  Sun Dec  2 15:53:55 2007
From: roy at panix.com (Roy Smith)
Date: Sun, 02 Dec 2007 15:53:55 -0500
Subject: Limit Guessing Algorithm
References: <6527e349-27ba-4de4-bc29-75ff4511787c@b40g2000prf.googlegroups.com>
Message-ID: 

In article 
<6527e349-27ba-4de4-bc29-75ff4511787c at b40g2000prf.googlegroups.com>,
 "ram.rachum at gmail.com"  wrote:

> Hello hello,
> 
> I'm looking for a piece of code, preferably in Python, that will do
> the following. It will accept a few data points (x,f(x)) of a function
> that converges to some finite value when x converges to infinity. I
> need the algorithm to guess what that limit is, to whatever precision
> it can.
> 
> For example, if the input is:
> 
> [
> [1,8],
> [2,7.5],
> [3,7.25],
> [4,7.125]
> ]
> 
> Then the output will be 7. Or at least something close.
> 
> Does anyone know anything like that?

I suggest any introductory calculus or math analysis text.  Perhaps even 
the one your professor assigned you for the course :-)

Look under "limits" in the table of contents.

From horpner at yahoo.com  Thu Dec 13 10:09:05 2007
From: horpner at yahoo.com (Neil Cerutti)
Date: Thu, 13 Dec 2007 15:09:05 GMT
Subject: Is Python really a scripting language?
References: <009101c83c55$4ee07a00$6501a8c0@aristotle>

	<2bc2ab76-da7b-43ec-969d-33f77b174a56@e6g2000prf.googlegroups.com>
	<13m12513p8pfqb4@corp.supernews.com>
Message-ID: 

On 2007-12-13, Steven D'Aprano  wrote:
> I have repeatedly argued in the past that we do ourselves a
> disservice by describing Python as an interpreted language.
>
> Python is compiled. It has a compiler. It even has a built-in
> function "compile". It's just not compiled to *machine code* --
> but with even machine code often running on a virtual machine
> in the CPU(s), the distinction is far less important now than
> it was when Sun described Java as a compiled language despite
> the lack of JIT compilers.

When folks say Python is an interpreted language I think they
mean it informally--they just mean you have to run an interpreter
to execute it. *How* it's translated is irrelevent to the
*informal* meaning.

And I'd further argue that the informal meaning is the only one
that makes any sense.

Formally:

>>> hasattr(Language, 'iterpreted')
False

>>> hasattr(Implementation, 'interpreted')
True

;-)

-- 
Neil Cerutti

From enleverlesX.XmcX at XmclaveauX.com  Mon Dec 10 09:24:31 2007
From: enleverlesX.XmcX at XmclaveauX.com (M�ta-MCI (MVP))
Date: Mon, 10 Dec 2007 15:24:31 +0100
Subject: GUI development with 3D view
In-Reply-To: 
References: 
	<5s4sc7F17o5duU1@mid.uni-berlin.de>

Message-ID: <475d4e72$0$5086$ba4acef3@news.orange.fr>

Hi!

> no idea how it works with windows.

On XP: fine.
On Vista: very difficult...

@+

MCI

From JohnRoth1 at jhrothjr.com  Fri Dec 14 01:27:59 2007
From: JohnRoth1 at jhrothjr.com (John Roth)
Date: Thu, 13 Dec 2007 22:27:59 -0800 (PST)
Subject: Windows XP unicode and escape sequences
References: 
Message-ID: <6ddde505-d0f9-4b24-a2e2-804e15061973@t1g2000pra.googlegroups.com>

On Dec 12, 2:51 pm,  wrote:
> I mainly work on OS X, but thought I'd experiment with some Python code on XP.  The
> problem is I can't seem to get these things to work at all.
>
> First of all, I'd like to use Greek letters in the command prompt window, so I was going to
> use unicode to do this.  But in the command prompt, the unicode characters are displaying
> as strange looking characters.  I tried installing the 'Bitstream Vera Sans Mono' font in hopes
> it had all the characters I needed but this didn't seem to work either.  Is the problem the font?
> And if so, is there a certain font that has unicode '03B1', etc?  Here's some code I tried:
>
> v = u'\u03B1\u03B2\u03B3'.encode('utf-8')
> print v #just displays squares

You've got two problems. First, you don't need to encode it; if the
command prompt window displayed your output after encoding it would
display the multi-byte form of your characters. You should just send
it a unicode object.

Second, check the .encoding attribute of the sys.stdout object.
Therein lies enlightenment about what the command prompt window will
accept.

No info on your other problem.

John Roth

>
> If anyone has any thoughts, I'd love to hear them.
>
> Thanks!
>
> Jay

From jayabarathi2007 at gmail.com  Mon Dec  3 00:39:30 2007
From: jayabarathi2007 at gmail.com (Barathi)
Date: Sun, 2 Dec 2007 21:39:30 -0800 (PST)
Subject: i need true friends like u
Message-ID: 

It takes a minute to have a crush on someone,
a hour to like someone, and a day to fall in
love with someone, but it takes a lifetime to
 forget someone (Friend).

http://jayabarathi.50webs.com/

From sturlamolden at yahoo.no  Tue Dec 18 10:37:28 2007
From: sturlamolden at yahoo.no (sturlamolden)
Date: Tue, 18 Dec 2007 07:37:28 -0800 (PST)
Subject: More than one interpreter per process?
References:  

Message-ID: 

On 18 Des, 10:24, Roger Binns  wrote:

> You can.  Have a look at mod_python and mod_wsgi which does exactly
> this.  But extension modules that use the simplified GIL api don't work
> with them (well, if at all).

mod_python implements use Py_NewInterpreter() to create sub-
interpreters. They all share the same GIL. The GIL is declared static
in ceval.c, and shared for the whole process. But ok, if
PyEval_AquireLock() would take a pointer to a 'sub-GIL', sub-
interpreters could run concurrent on SMPs. But it would require a
separate thread scheduler in each subprocess.

From ctrachte at gmail.com  Sun Dec 30 21:42:50 2007
From: ctrachte at gmail.com (infixum)
Date: Sun, 30 Dec 2007 18:42:50 -0800 (PST)
Subject: Help please with code to find and move files.
References: 
Message-ID: <79776f34-be23-470f-9fe7-56e3741075d3@l6g2000prm.googlegroups.com>

> path = r"c:\\"

I don't know if this is the whole problem, but this line should read
r'c:\' (one backslash).

From MonkeeSage at gmail.com  Mon Dec 10 10:55:42 2007
From: MonkeeSage at gmail.com (MonkeeSage)
Date: Mon, 10 Dec 2007 07:55:42 -0800 (PST)
Subject: searching a value of a dict (each value is a list)
References: 
	<13lpc0el80j2p7d@corp.supernews.com>

	<1ddd41dd-1e2e-4312-adc1-f374e7f53def@l1g2000hsa.googlegroups.com> 

Message-ID: <106172f8-0dfb-4245-b08d-2dbe63b44250@w40g2000hsb.googlegroups.com>

On Dec 10, 9:45 am, MonkeeSage  wrote:
> On Dec 10, 8:31 am, Neil Cerutti  wrote:
>
>
>
> > On 2007-12-10, MonkeeSage  wrote:
>
> > > If I'm not mistaken, building a reverse dictionary like that will be
> > > O(n*m) because dict/list access is O(n) (ammortized). Somebody correct
> > > me if I'm wrong. In that case, it really depends on how you will use
> > > the dict to see whether you get any benefit from building the reversed
> > > dict. If you want to do several lookups, then the initial overhead
> > > (speed/memory) of building the reversed dict might be worth it so that
> > > you can just run lookups at O(n).
>
> > It also depends on if the dictionary shall be mutated between
> > reverse lookups.
>
> > > But if you only need it once, it is a waste of time and space
> > > to create a reverse dict when your access time is the same for
> > > the lookup as for building the reversed dict.
>
> > > If you do need more than one lookup, it would also be a good
> > > optimization strategy to build the reverse dict in parallel, as
> > > you execute the first search; that way you can combine the time
> > > spent on building the reverse dict and the lookup, to get a
> > > total of O(n*m) rather than O(n^2*m). The first search is
> > > "free" since you need the reverse dict anyway.
>
> > It wouldn't be merely an optimization if reverse lookups and
> > mutations were interleaved.
>
> > --
> > Neil Cerutti
> > You only get a once-in-a-lifetime opportunity so many times. --Ike Taylor
>
> Well true, but you enter a whole other level of complexity in that
> case...something like Theta(log(n*(m-n))). I might have calculated
> that incorrectly, but that just goes to show how complex a lookup
> is(!) in such a case.
>
> Regards,
> Jordan

Sorry for the double-post...google is being beligerant right now.

From bj_666 at gmx.net  Sun Dec 23 11:40:33 2007
From: bj_666 at gmx.net (Marc 'BlackJack' Rintsch)
Date: 23 Dec 2007 16:40:33 GMT
Subject: Passing by reference
References: <34cade84-6f3d-46ad-a39d-377235a56689@x69g2000hsx.googlegroups.com>
	<27d0c1c4-6bab-42de-b3ab-af47a607326f@i29g2000prf.googlegroups.com>

	<13mloevf5jbkbac@corp.supernews.com>

	<254d6de7-7196-4059-a5de-84d81b820a97@e4g2000hsg.googlegroups.com>
	<476bc271$0$31106$426a34cc@news.free.fr>
	<47e0776a-c4b7-47c9-80ca-4670f168290b@21g2000hsj.googlegroups.com>
	<476c2bd1$0$6135$426a74cc@news.free.fr>

	<476d8aee$0$31237$426a74cc@news.free.fr>
	<6ccd480d-f2bd-41a1-b13a-c813fbd6a858@c4g2000hsg.googlegroups.com>
Message-ID: <5t7hc1F1cjjhoU1@mid.uni-berlin.de>

On Sun, 23 Dec 2007 03:10:48 -0800, MartinRinehart wrote:

> Bruno, right now I've got this:
> 
> def __init__ ( self, t ):
>     """ Constructor, called with array of strings. """
> 
>     self.text = t
>     ...
> 
> Some other program will say:
> tok = Toker( text_array )
> tokens = tok.tokenize()
> 
> So how does the constructor make the array of strings available to the
> tokenize() method?

Assuming the `__init__()` above belongs to the `Toker` class then the
`tokenize()` method can access it via `self.text` of course.

Ciao,
	Marc 'BlackJack' Rintsch

From zip at got.no.mail  Tue Dec 18 20:38:59 2007
From: zip at got.no.mail (__zip__)
Date: Wed, 19 Dec 2007 02:38:59 +0100
Subject: pySerial
In-Reply-To: 
References: 

Message-ID: 

Tnx for help. Done it.

The problem was that returning bytes were on few lines and I
didn't look after first \n :(

tnx.

From arkanes at gmail.com  Tue Dec 18 13:24:36 2007
From: arkanes at gmail.com (Chris Mellon)
Date: Tue, 18 Dec 2007 12:24:36 -0600
Subject: Changing intobject to use int rather than long
In-Reply-To: 
References: 
Message-ID: <4866bea60712181024s5b4071ddn67fdc76e74055d3a@mail.gmail.com>

On Dec 18, 2007 11:59 AM, Clarence  wrote:
> Does anyone think (or know) that it might cause any internal problems
> if the ival member of the struct defining an intobject were to be
> changed from its current "long int" to just "int"?
>
> When you move your application to a 64-bit system in order to get a
> bigger address space to store your millions/billions of integers in
> RAM, but they get twice as big, you don't gain very much.
>

Your int objects get twice as large, but you get 4294967296 times more
address space.

(They don't always get twice as large, and you don't actually get that
much address space, and there's lots of other things wrong with this
answer, but the core truth - that your available address space grows
at a greater rate than the size of your ints - is correct).

> Thanks.
> --
> http://mail.python.org/mailman/listinfo/python-list
>

From hennebry at web.cs.ndsu.nodak.edu  Mon Dec  3 14:24:51 2007
From: hennebry at web.cs.ndsu.nodak.edu (Mike)
Date: Mon, 3 Dec 2007 11:24:51 -0800 (PST)
Subject: takes no arguments (1 given)
References: <2b9a029c-20e4-4f20-9613-10617f6f540d@a39g2000pre.googlegroups.com>
Message-ID: <334b5247-ef71-4d6d-ae3e-7dd41ca4b99f@l16g2000hsf.googlegroups.com>

Oops.  I just forgot self.

From sgeiger at ncee.net  Wed Dec 12 01:20:39 2007
From: sgeiger at ncee.net (Shane Geiger)
Date: Wed, 12 Dec 2007 00:20:39 -0600
Subject: Loading an exe icon into a pixmap/bitmap
In-Reply-To: <968135a3-fde1-4f44-a1b7-cec64a4744e8@t1g2000pra.googlegroups.com>
References: <968135a3-fde1-4f44-a1b7-cec64a4744e8@t1g2000pra.googlegroups.com>
Message-ID: <475F7DB7.5040304@ncee.net>

Are you looking for these kinds of tools?

In Debian:
icoutils - Extract MS Windows icons and cursors

I don't recall where I saw this:
FileJuicer - Extract images from Powerpoint, PDF, HTML, and CAB files

ob.lutz at gmail.com wrote:
> I've been searching for a way to load an icon from an executable into
> something that I can eventually display either through pygame or
> pygtk. I've tried the stuff found at
> http://groups.google.com/group/comp.lang.python/browse_thread/thread/d7f61f270cce368/3ff38c1ced504e43?lnk=gst&q=win32+icon#3ff38c1ced504e43
> but the tests just output all black (not surprising, as that guy
> couldn't get it to work either). I've mucked around with taht code and
> the ExtractIcon stuff from pywin32, but still am stuck. I've seen some
> reference to a wxpython ways to do it, but I'm trying to not have to
> convert over to that. Any help is appreciated. Thanks
>   

-- 
Shane Geiger
IT Director
National Council on Economic Education
sgeiger at ncee.net  |  402-438-8958  |  http://www.ncee.net

Leading the Campaign for Economic and Financial Literacy

From istvan.albert at gmail.com  Sun Dec 30 15:32:04 2007
From: istvan.albert at gmail.com (Istvan Albert)
Date: Sun, 30 Dec 2007 12:32:04 -0800 (PST)
Subject: Bizarre behavior with mutable default arguments
References: 
	<47768DE0.5050406@v.loewis.de>

	<2541af1e-9167-4cee-b773-8f6ab0f23b8f@i12g2000prf.googlegroups.com> 
	<4a5d4311-c5ec-4f3c-8800-c30ac30e399d@t1g2000pra.googlegroups.com>
Message-ID: <601e4a81-a69a-4576-a276-41d82a256482@e50g2000hsh.googlegroups.com>

On Dec 30, 11:26 am, George Sakkis  wrote:

> I'm with you on this one; IMHO it's one of the relatively few language
> design missteps of Python, favoring the rare case as the default
> instead of the common one.

George, you pointed this out this link in a different thread

http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/521877

how would you rewrite the code below if you could not use mutable
default arguments (global variables not accepted)? Maybe there is a
way, but I can't think of it as of now.

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

def blocks(s, start, end):
    def classify(c, ingroup=[0]):
        klass = c==start and 2 or c==end and 3 or ingroup[0]
        ingroup[0] = klass==1 or klass==2
        return klass
    return [tuple(g) for k, g in groupby(s, classify) if k == 1]

print blocks('the {quick} brown {fox} jumped', start='{', end='}')

From sgeiger at ncee.net  Thu Dec  6 10:49:35 2007
From: sgeiger at ncee.net (Shane Geiger)
Date: Thu, 06 Dec 2007 09:49:35 -0600
Subject: which configparse?
In-Reply-To: 
References: 
Message-ID: <47581A0F.7050900@ncee.net>

Best, is naturally, a somewhat subjective evaluation.  That being said,
configparser is well regarded.  I have also seen these two options that
you might want to check out:

http://wiki.woodpecker.org.cn/moin/Dict4Ini
http://www.voidspace.org.uk/python/configobj.html

> I have all my options setup with optparse.  Now, I'd like to be able to
> parse an ini file to set defaults (that could be overridden by command line
> switches).
>
> I'd like to make minimal change to my working optparse setup (there are lots
> of options - I don't want to duplicate all the cmdline parsing with ini
> file parsing code)
>
> I've looked at configparse, cfgparse, iniparse.
>
> configparse looks like what I want, but it seems last commit was >2years
> ago.
>
> What is the best choice?
>
>   

-- 
Shane Geiger
IT Director
National Council on Economic Education
sgeiger at ncee.net  |  402-438-8958  |  http://www.ncee.net

Leading the Campaign for Economic and Financial Literacy

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From m.gritsch at gmail.com  Mon Dec 24 15:04:33 2007
From: m.gritsch at gmail.com (Markus Gritsch)
Date: Mon, 24 Dec 2007 21:04:33 +0100
Subject: Python DLL in Windows Folder
In-Reply-To: <4866bea60712241007r1db5de8w75abab3c8a2e024e@mail.gmail.com>
References: <533b7d320712230652w6bd4e90dv905d7112d337d0fd@mail.gmail.com>

	<533b7d320712231027h26623fffi3b471b6c85873a64@mail.gmail.com>
	<4866bea60712241007r1db5de8w75abab3c8a2e024e@mail.gmail.com>
Message-ID: <533b7d320712241204o17f6a7bycbe9caf31a93652b@mail.gmail.com>

On 24/12/2007, Chris Mellon  wrote:
> On Dec 23, 2007 12:27 PM, Markus Gritsch  wrote:
> > On 23/12/2007, Christian Heimes  wrote:
> > > Markus Gritsch wrote:
> > > > why does the Python installer on Windows put the Python DLL into the
> > > > Windows system32 folder?  Wouldn't it be more clean to place it into
> > > > the Python installation folder beside the python.exe file?
> > >
> > > It's the easiest and best way to expose Python for 3rd party
> > > applications and COM. The DLL is removed by the Windows Installer when
> > > its usage counter drops to 0. There is no need to worry ;)
> >
> > I am not worrying about an orphaned DLL.  The Problem is that this way
> > the Python DLL is being made available for 3rd party applications,
> > which possibly need a version of Python which is compiled using
> > another compiler.  We are embedding Python into our application which
> > gets compiled using MSVC 8.0.  We like to link dynamically, so the
> > Python interpreter is not statically linked into the program.  The
> > Python DLL from the Python installer in the Windows system32 folder is
> > compiled using MSVC 7.1.
> >
>
>
> What the python installer is doing is the Right Thing for making the
> standard python dll available to third party applications.

But this forces the 3rd party application being compiled with the same
compiler as the Python DLL which is MSVC 7.1 for Python 2.5 which is a
quite old compiler nowadays.

> Applications that want a specific version of a specific DLL should use
> the mechanisms available for doing so, instead of relying on there
> being a specific version of the python dll in the windows folder.

We do not rely on having some specific version of the Python DLL in
the Windows system 32 folder.  However, the MSVC 7.1 compiled version
gets in the way when using a different compiler.

Kind regards,
Markus

From gagsl-py2 at yahoo.com.ar  Tue Dec 18 21:06:54 2007
From: gagsl-py2 at yahoo.com.ar (Gabriel Genellina)
Date: Tue, 18 Dec 2007 18:06:54 -0800 (PST)
Subject: askopenfilename() as root window
References: 
Message-ID: 

On 18 dic, 22:43, Sean DiZazzo  wrote:

> Is there any way to open a Tkinter.askopenfilename() without opening a
> root window alongside the file chooser?
>
> I simply want a script to open a dialog and return the chosen file's
> path to stdout.

Yes, create the root yourself so you can call the withdraw() method:

root = Tk()
root.withdraw()
print askopenfilename()

--
Gabriel Genellina

From mdelliot at gmail.com  Fri Dec 28 12:01:40 2007
From: mdelliot at gmail.com (Micah Elliott)
Date: Fri, 28 Dec 2007 09:01:40 -0800 (PST)
Subject: Building Python statically on linux
References: <0300530c-5550-4fff-bac6-66dbfa1b82b9@d21g2000prf.googlegroups.com>

	<9c2ead09-d84d-4972-b3a2-8bff510fcb94@b40g2000prf.googlegroups.com> 

Message-ID: <526a1ce2-6a74-4b76-ba03-3c8aacdfbba3@e25g2000prg.googlegroups.com>

On Dec 28, 5:44 am, Christian Heimes  wrote:

> Can you work on the topic and write a small howto for your wiki
> (http://wiki.python.org/moin/)?

Good idea.  I've created a placeholder (with what I know so far, not
much) to track this:

  http://wiki.python.org/moin/BuildStatically

I'll plan to be updating it today if I can get it working.  Anyone
else is welcome to add their knowledge/experience.

From ajauctionpro at gmail.com  Thu Dec  6 06:17:18 2007
From: ajauctionpro at gmail.com (ajauctionpro at gmail.com)
Date: Thu, 6 Dec 2007 03:17:18 -0800 (PST)
Subject: Surfing Script
Message-ID: <8a1a75e3-b994-4545-812d-0bb8cdf86458@i12g2000prf.googlegroups.com>

AJ Surfing is a fully functional surfing website with full
administration controls. Users need no programming experience to
change any site features. It is a complete web application developed
using PHP with MYSQL as back-end. Full developer API allows for
endless possibilities and use in your own project!

Sources: http://www.ajsquare.com/ajsurfing/index.php

From sjmachin at lexicon.net  Tue Dec 18 04:07:42 2007
From: sjmachin at lexicon.net (John Machin)
Date: Tue, 18 Dec 2007 01:07:42 -0800 (PST)
Subject: Rounding
References: <567047.82204.qm@web57302.mail.re1.yahoo.com>

Message-ID: <357fc17e-932a-498c-a0e4-93e1c97c99c0@e6g2000prf.googlegroups.com>

On Dec 18, 7:53 pm, "Vladimir Rusinov" 
wrote:
> On 12/15/07, katie smith  wrote:
>
>
>
> > if i have a number 6.345 and i wanted it to be 6 without subtracting .345
> > because it won't always be .345 what do i do?
>
> > how do i round to the nearest whole number. Or in this case round down. Is
> > there an easy way to round down to the nearest whole number?
>
> init() ?

Perhaps you mean int. The OP may also be interested in another built-
in function, just in case a float result or more versatility is
needed; it's called round.

From trekker182 at comcast.net  Tue Dec  4 19:43:32 2007
From: trekker182 at comcast.net (Shawn Minisall)
Date: Tue, 04 Dec 2007 19:43:32 -0500
Subject: project - trivia game 
Message-ID: <4755F434.7030005@comcast.net>

For my final project, I'm trying to do a GUI based game similar to are 
you smarter then a 5th grader.  I've been working on it and am stuck 
with some code someone helped me with to randomize the A,B,C,D letters 
that the correct answer is assigned too.  The code that does this is 
highlighted in bold and the code that assigns it to a variable is also 
in bold so I can test it in the console window.  Problem is, it's always 
stuck at letter A and doesn't always give the correct answer.  The 
correct answer is always position 1 in my make math question list.  
Could someone please help?

thanks

BTW, to whoever asked me why I don't use functions b4, I'm using them 
now that I've learned how to... :P ;)

from graphics import *
from random import *

def drawMainMenu(win):
    #define and draw the buttons
    mainMenuList = []
    mainMenuList.append (CreateRect(4,6,7,8,"grey",win))
    mainMenuList.append (CreateRect(3.5,6.5,5,6,"grey",win))
    mainMenuList.append (CreateRect(3.5,6.5,3,4,"grey",win))
    mainMenuList.append (CreateRect(3.1,7,1,2,"grey",win))
    mainMenuList.append (CreateRect(8,10,0,1,"grey",win))

    #define and draw the main menu
    mainMenuList.append (CreateText(5,9.5,"MAIN MENU","times roman", 30, 
"normal", "red",win))
    mainMenuList.append (CreateText(2,8.5,"Please pick a subject from 
below: ","times roman", 14, "normal", "purple",win))
    mainMenuList.append (CreateText(5,7.5,"MATH","times roman", 28, 
"italic", "blue",win))
    mainMenuList.append (CreateText(5,5.5,"SCIENCE","times roman", 28, 
"italic", "yellow",win))
    mainMenuList.append (CreateText(5,3.5,"HISTORY","times roman", 28, 
"italic", "pink",win))
    mainMenuList.append (CreateText(5,1.5,"GEOGRAPHY","times roman", 28, 
"italic", "green",win))
    mainMenuList.append (CreateText(9,.5,"Quit","times roman", 20, 
"italic", "black",win))

    return(mainMenuList)

def UndrawMenu (menulist):
    for i in range(len(menulist)):
        menulist[i].undraw()

def CreateText(x,y,myString,myFace,mySize, myStyle, myColor,win):
    myText = Text(Point(x,y), myString)
    myText.setFace(myFace)
    myText.setSize(mySize)
    myText.setStyle(myStyle)
    myText.setTextColor(myColor)
    myText.draw(win)
    return myText

def CreateRect(x1,x2,y1,y2,myFill,win):
    myRect = Rectangle(Point(x1,y1,), Point(x2,y2))
    myRect.setFill(myFill)
    myRect.draw(win)
    return myRect

def isValidClick(x1,x2, y1, y2, p1, win):
    if p1.getX()>=x1 and p1.getY()>=y1 and p1.getX()<=x2 and p1.getY()<=y2:
        return True
    else:
        return False

def drawQuestion (subject, question, answers, win):
    menuList = []

    #define and draw the entry boxes
    entchoice = Entry(Point(6.4,6.5), 1)
    entchoice.setText("A")
    entchoice.setTextColor ("blue")
    entchoice.draw(win)

    menuList.append(entchoice)
    menuList.append(CreateText(5,9.5,question,"times roman", 18, 
"normal", "red",win))
    menuList.append(CreateText(2,8.5,"A. " + answers[0],"times roman", 
16, "normal", "purple",win))
    menuList.append(CreateText(7.5,8.5,"B. " + answers[1],"times roman", 
16, "normal", "purple",win))
    menuList.append(CreateText(2,7.5,"C. " + answers[2],"times roman", 
16, "normal", "purple",win))
    menuList.append(CreateText(7.5,7.5,"D. " + answers[3],"times roman", 
16, "normal", "purple",win))
    menuList.append(CreateText(4.7,6.5,"Please enter your 
choice:","times roman", 16, "normal", "purple",win))

    #draw answer box and text
    answerButton = Rectangle(Point(7,5.5), Point(3,4))
    answerButton.setFill("grey")
    answerButton.draw(win)
    answerButton = Text(Point(5,4.8),"Answer")
    answerButton.setTextColor("black")
    answerButton.setSize(22)
    answerButton.draw(win)
    menuList.append(answerButton)

    return(menuList)   

def main():

    #Declare and initialize variables

    #make math question list
    mathlist = []
    question = ["An equilateral triangle has how many sides?", "3", "4" 
, "1", "5"]
    mathlist.append(question)
    question = ["How many inches are in a foot?", "12", "6", "3", "9"]
    mathlist.append(question)
    question = ["One Kilogram equals how many grams?", "1000", "230", 
"450", "100"]
    mathlist.append(question)
    question = ["Which means nine hundred sixty three thousandths?", 
".963", ".0963", ".0.0963", "9.63"]
    mathlist.append(question)
    question = ["A fathom is a unit of measurement for which of the 
following?", "depth", "space", "time", "distance"]
    mathlist.append(question)
    question = ["What is 111, plus 112, plus 113?", "336", "332", "331", 
"333"]
    mathlist.append(question)

    #show the rules of the game window
    win = GraphWin("RULES OF THE GAME",600,600)
    win.setBackground("orange")
    win.setCoords(0.0,0.0,10.0,10.0)

    txtrules1 = CreateText(5,9.5,"The rules of the game are as 
follows:","times roman", 16, "normal", "red",win)
    txtrules2 = CreateText(5,8.5,"The game will be made up of 10 
questions, 2 from each grade 1-5.","times roman", 12, "normal", "black",win)
    txtrules3 = CreateText(5,7.5,"You will be able to pick 2 subjects 
you want to answer for each grade.","times roman", 12, "normal", 
"black",win)
    txtrules4 = CreateText(5,6.5,"The subjects you can pick from are 
Math, Science, History and Geography.","times roman", 12, "normal", 
"black",win)
    txtrules5 = CreateText(5,5.5,"No more then 3 questions can be 
answered from each subject.","times roman", 12, "normal", "black",win)
    txtrules6 = CreateText(5,2.5,"HAVE FUN AND GOOD LUCK!","times 
roman", 26, "normal", "yellow",win)

    #define window and set coords
    win =GraphWin("Are You Smarter Then a Fifth Grader???",800,800)
    win.setBackground("orange")
    win.setCoords(0.0,0.0,10.0,10.0)
    mainMenuList = drawMainMenu(win)

    #getMouse
    p1 = win.getMouse()
    while(isValidClick(8,10,0,1,p1,win)==False):
        if (isValidClick(4,6,7,8,p1,win)==True):
            currentList = mathlist
            subject = "Math"

        elif (isValidClick(3.5,6.5,5,6,p1,win)==True):
            UndrawMenu(mainMenuList)

        elif (isValidClick(3.5,6.5,3,4,p1,win)==True):
            UndrawMenu(mainMenuList)

        elif (isValidClick(3.1,7,1,2,p1,win)==True):
            UndrawMenu(mainMenuList)

        UndrawMenu(mainMenuList)

*        #Picks random question
        qNum = randrange(0, len(currentList))
        qList = currentList[qNum]

        aList = []
        tmpList = qList[1:5]

        #Randomizes answers
        while(len(tmpList) > 0):
            rNum = randrange(0, len(tmpList))
            aList.append(tmpList[rNum])
            tmpList.pop(rNum)*

        currentScreen = drawQuestion(subject, qList[0], aList, win)
        currentList.pop(qNum)

        #getMouse
        p1 = win.getMouse()
        while(isValidClick(7,3,5.5,4,p1,win)==True):
            print "hello"

*
        pResult = (currentScreen[0].getText())
        print pResult

        cResult = (currentScreen[2].getText())
        print cResult*

        #compare player's answer to correct answer
        #if correct/incorrect do a print statement
        #add/take away from score

        UndrawMenu(currentScreen)

    #Quit
    win.close()

From chrisspen at gmail.com  Tue Dec 11 11:05:29 2007
From: chrisspen at gmail.com (Chris)
Date: Tue, 11 Dec 2007 08:05:29 -0800 (PST)
Subject: Matching XML Tag Contents with Regex
Message-ID: <38ea9cbc-a222-4c0f-ba2d-f6b415d02fb1@d27g2000prf.googlegroups.com>

I'm trying to find the contents of an XML tag. Nothing fancy. I don't
care about parsing child tags or anything. I just want to get the raw
text. Here's my script:

import re

data = """

here's some text!

"""

tagName = 'div'
pattern = re.compile('<%(tagName)s\s[^>]*>[.\n\r\w\s\d\D\S\W]*[^(%
(tagName)s)]*' % dict(tagName=tagName))

matches = pattern.finditer(data)
for m in matches:
    contents = data[m.start():m.end()]
    print repr(contents)
    assert tagName not in contents

The problem I'm running into is that the [^%(tagName)s]* portion of my
regex is being ignored, so only one match is being returned, starting
at the first  and ending at the end of the text, when it should
end at the first . For this example, it should return three
matches, one for each div.

Is what I'm trying to do possible with Python's Regex library? Is
there an error in my Regex?

Thanks,
Chris

From larry.bates at websafe.com  Wed Dec 12 17:34:46 2007
From: larry.bates at websafe.com (Larry Bates)
Date: Wed, 12 Dec 2007 16:34:46 -0600
Subject: Finding Line numbers of HTML file
In-Reply-To: <3f6e6190-32a0-462c-b38c-d57d6215646c@j20g2000hsi.googlegroups.com>
References: <3f6e6190-32a0-462c-b38c-d57d6215646c@j20g2000hsi.googlegroups.com>
Message-ID: 

Ramdas wrote:
> I am doing some HTML scrapping for a side project.
> 
> I need a method using sgmllib or HTMLParser to parse an HTML file and
> get line nos of all the tags
> 
> I tried a few things, but I am just not able to work with either if
> the parsers.
> 
> 
> 
> Can someone help
> 

HTML doesn't really have "lines" it is just a stream of text that can be 
formatted with line end characters to make it somewhat easier for humans to 
read.  Parsers probably won't give you any line numbers.  What is the use case 
for this (e.g. why do you think you need the line numbers)?  Extraction is done 
using tags not line numbers.  All that said, you should look at Beautiful Soup 
module before continuing.

-Larry

From alexLIGO at googlemail.com  Tue Dec  4 06:42:28 2007
From: alexLIGO at googlemail.com (alexLIGO at googlemail.com)
Date: Tue, 4 Dec 2007 03:42:28 -0800 (PST)
Subject: Problems with import
Message-ID: <4d4415d1-9469-45da-8364-49b5c5b4fc87@o6g2000hsd.googlegroups.com>

Hi,

I have some problems when importing a library. Suppose I have a
directory /home/user/pythonlib/package in which I have a python-
library called test.py. Now I want to import that, so I put the
following directory into the PYTHONPATH: /home/user/pythonlib and in
my main python script I put:

from package import test.

BUT I get an error:

ImportError: cannot import name test

So how can I test and check what is going on, why python does not find
the library?

Thanks
  Alex

From jcd at sdf.lonestar.org  Thu Dec 13 11:11:35 2007
From: jcd at sdf.lonestar.org (J. Clifford Dyer)
Date: Thu, 13 Dec 2007 11:11:35 -0500
Subject: Question from a python newbie
In-Reply-To: <7ae3ca10712130757o32a98fcfr410c0faa43525803@mail.gmail.com>
References: 
	<7ae3ca10712130757o32a98fcfr410c0faa43525803@mail.gmail.com>
Message-ID: <20071213161135.GA19800@sdf.lonestar.org>

On Thu, Dec 13, 2007 at 04:57:04PM +0100, Remco Gerlich wrote regarding Re: Question from a python newbie:
> 
>    On Dec 13, 2007 4:39 PM, Russell <[1]rcooknet at gmail.com> wrote:
> 
>      I've been learning Python slowly for a few months, coming from a
>      C/C+
>      +, C#, Java, PHP background.  I ran across a code fragment I'm
>      having
>      trouble wrapping my brain around.  I've searched the Language
>      Reference and was not able to find any info regarding the structure
>      of
>      this code fragment:
>      int(text) if text.isdigit() else text
> 
>    Hi,
>    It's a pretty new construct; basically it's Python's version of the ? :
>    "ternary operator" in other languages.
>    The line above is equivalent to
>    text.isdigit() ? int(text) : text
>    in, for instance, C.
>    Remco Gerlich
> 

Or, if you don't know C.  It is equivalent to

if text.isdigit():
	int(text)
else:
	text

From lists at cheimes.de  Wed Dec 12 21:56:29 2007
From: lists at cheimes.de (Christian Heimes)
Date: Thu, 13 Dec 2007 03:56:29 +0100
Subject: Improvements to the Python core
In-Reply-To: 
References: 

Message-ID: <47609F5D.8040405@cheimes.de>

Paul Boddie wrote:
> Then you haven't been reading the right IRC channel recently. ;-)

What's the right channel? I'm on #python and #python-dev

> Indeed, but there's arguably a certain amount of deadlock around
> making unpatched, released versions of Python available in all these
> places, unless there's been some activity below the surface in the
> python-dev community on things like cross-compilation and not running
> distutils using the newly built Python executable (which, as I
> remember, was but one of the problems). Your point stands, naturally,
> but if there's potential for some real movement on some
> uncontroversial issues, and yet we see no movement, one remains
> skeptical about getting even slightly controversial improvements into
> vanilla CPython.

I don't get your point, especially when you talk about distutils. Please
elaborate.

(C)Python has a well known process to get new features or changes into
the language: Write a PEP, convince enough core developers and/or Guido,
implement the feature. I don't see a PEP about JIT in the list at
abouthttp://www.python.org/dev/peps/, do you? :]

Besides nobody is going to stop you from creating a fork. Christian
Tismer forked of stackless years ago. It's a successful branch with
useful additions to the language. It got never merged back because
Christian didn't feel right about it.

> Perhaps, but what would people prefer: yet more language bolt-ons or
> better performance?

I prefer a fast, stable and maintainable Python over a faster but unstable.

> It will be interesting to see what happens with recent work on
> improving threading within CPython. As for Psyco (which perhaps offers
> concurrency benefits only through instruction-level parallelism, if we
> briefly consider that topic), I can understand that just-in-time
> compilation can bring certain penalties in terms of memory usage and
> initialisation times (as Java virtual machines have demonstrated), but
> there's a compelling argument for trying to make such technologies
> available to CPython if they can be switched off and won't then incur
> such penalties. But we presumably return to the point of people not
> wanting to touch code that has anything to do with such features: a
> combination of social factors and the priorities of the group.

Rhamph is working on a GIL-less Python version. It may become a compile
time option someday in the future. Others have worked hard to speed up
other parts of Python. We have multiple pending patches which speed up
small parts of Python. Some are related to peephole (byte code
optimizations), other patches speed up attribute access on classes or
globals. The global lookup patch makes globals as fast as locals.

I've done my share for the poor Windows souls when I created the VS 2008
PCbuild9 directory and enabled PGO builds. PGO builds are about 10%
faster than ordinary VS 2008 builds. VS 2008 should be slightly faster
than VS 2003 but I can bench mark it on my machine.

In my opinion an optional JIT as compile time or startup option has good
chances to become part of the CPython implementation. You "only" have to
replace ceval.c ... :]

Christian

From nytrokiss at gmail.com  Sat Dec  8 17:02:41 2007
From: nytrokiss at gmail.com (James Matthews)
Date: Sat, 8 Dec 2007 23:02:41 +0100
Subject: download complete webpage with python
In-Reply-To: 
References: <830031.68574.qm@web53903.mail.re2.yahoo.com>

Message-ID: <8a6b8e350712081402y65569578n8f009596a66b9e4e@mail.gmail.com>

from urllib import urlopen
url = urlopen("http://www.google.com").read()

Enjoy!

On 12/8/07, Larry Bates  wrote:
>
> Gabriel Genellina wrote:
> > En Fri, 07 Dec 2007 17:58:43 -0300, yi zhang 
> > escribi?:
> >
> >> The urllib.urlretrieve() can only download the text part of a webpage,
> >> not the image associated. How can I download the whole, complete
> >> webpage with python? Thanks!
> >
> > The images are separate from the html document. You have to parse the
> > html text, find the  tags, and retrieve them.
> >
> Actually IMHO this is even more difficult than it sounds.  Javascript can
> change
> the webpage after it loads.
>
> Larry
> --
> http://mail.python.org/mailman/listinfo/python-list
>

-- 
http://search.goldwatches.com/?Search=Movado+Watches
http://www.jewelerslounge.com
http://www.goldwatches.com
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From horpner at yahoo.com  Mon Dec  3 11:11:19 2007
From: horpner at yahoo.com (Neil Cerutti)
Date: Mon, 03 Dec 2007 16:11:19 GMT
Subject: "Python" is not a good name, should rename to "Athon"
References: 
	<78bdd499-a263-4c68-8e43-e3e59b111c7e@a39g2000pre.googlegroups.com>
	<5rcq90F13re18U1@mid.individual.net>

	<13l44ousfqdhfb1@corp.supernews.com>

	<13l539r1gjt8l7e@corp.supernews.com>
	<122201b7-7cc7-4315-8c2d-55586552ada3@y5g2000hsf.googlegroups.com>
	<13l80q05uc12v84@corp.supernews.com>
	<7a2bff7e-4e54-473a-831f-ef5b873f9aeb@i29g2000prf.googlegroups.com>
Message-ID: 

On 2007-12-03, Russ P.  wrote:
> On Dec 3, 5:23 am, Steven D'Aprano
>> I'm not suggesting that Leibniz was any more of a scientist
>> than Newton was, nor am I suggesting that Newton's
>> achievements should be *rejected* (er, except for those pesky
>> Quantum Mechanics and Relativity things...). I'm just saying
>> that we should understand Newton for what he actually was, and
>> not based on the 18th Century revisionism.
>
> Your claim that Newton was "not a scientist" says more about
> you than it does about him. He is widely regarded -- by
> physicists and many other scientists -- not only as a
> scientist, but as the most important one who ever lived.

To paraphrase Bertrand Russell, Newton was too successful.
Over-veneration of Newton was eventually an impediment to
progress--this was not, of course, his fault.

-- 
Neil Cerutti

From sgeiger at ncee.net  Thu Dec 27 12:58:04 2007
From: sgeiger at ncee.net (Shane Geiger)
Date: Thu, 27 Dec 2007 11:58:04 -0600
Subject: Dynamic DNS with a python script
In-Reply-To: <1e5bcefd0712270927p2c23901el8ae6a4283af3faa1@mail.gmail.com>
References: <1e5bcefd0712270927p2c23901el8ae6a4283af3faa1@mail.gmail.com>
Message-ID: <4773E7AC.80302@ncee.net>

Marcelo de Moraes Serpa wrote:
> Hello list,
>
> I'd like to set up ssh access to my home computer so that I will be
> able to access it from work - for this no problem, installing sshd is
> straightforward.
>
> The issue here is that I don't have a fixed IP connection at home.
> Also, I wouldn't like to use services such as no-ip or similar.
>
> What I thought was of writing a python program that would detect when
> the internet network interface was restarted/started for the first
> time and then update a DNS record at my DNS server where I would have
> a subdomain that for my home machine's host.
>
> However, I have no idea on how I could detect if the network has been
> restarted nor how I could update this DNS record. Any suggestion would
> be greatly appreciated :)
>
> Thanks in advance,
>
> Marcelo.

How to deal with networking depends on the system you use.  For Debian:

    Debian uses ifupdown (see ifup(8), ifdown(8) and interfaces(5)) to
    manipulate network interfaces. Each interface is provided with
    several scripting hooks: pre-up, up, down, and post-down. These
    hooks are available to each interface as in-line directives in
    /etc/network/interfaces and also as *.d/ directories called with
    run-parts (see run-parts(8)):

       /etc/network/if-up.d/
       /etc/network/if-pre-up.d/
       /etc/network/if-down.d/
       /etc/network/if-post-down.d/

SETTING UP A DOMAIN NAME WITH DYNDNS.ORG

Go to their site and set up an account.  While doing that (or perhaps
after--I don't remember), you can choose a domain name.  You *could*
think of what they are giving you is a subdomain--not actually a
domain.  You will be able to choose something like foo.mine.nu where
"foo" is the name you choose for the name of your subdomain and
"mine.nu" is the domain they already own.  (You can choose from many
domains they already own.)  Since they manage these domains themselves,
they do not have to pay a registrar to set up a subdomain...and
therefore they can give you a subdomain for free.  (Actually, I'm using
the term "subdomain" loosely here...but I'm sure you get the point I'm
trying to make--which is that you don't have to pay for this name.)

Once you have your name (foo.mine.nu, for example), you can set up a
program on your computer to update their DNS servers with your new
domain name whenever it changes.

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

SETTING UP IPCHECK WITH DYNDNS.ORG

I have been satisfied with my first choice (dyndns.org), so I haven't
tried the others.  They probably work well, too.

Set up an account on dyndns.org, and record the username, password, and
domain name in your notes.  In the following examples, I use the
following values:

username:  sgeiger
pass:  asdfasdf
domain name:  sgeiger.mine.nu

apt-get install ipcheck

You might want to run this first so that you are in the directory cron
will use when you run ipcheck:
sudo su; cd ~;

HERE'S HOW TO CONFIGURE IT:
sgeiger at minime:~$ sudo /usr/sbin/ipcheck.py -l -r
checkip.dyndns.org:8245 shanerg asdfasdf sgeiger.mine.nu
ipcheck.py: No ipcheck.dat file found.
ipcheck.py: Use same command+options ONCE with --makedat to create from
DNS lookup.
sgeiger at minime:~$ sudo /usr/sbin/ipcheck.py --makedat -l -r
checkip.dyndns.org:8245 shanerg asdfasdf sgeiger.mine.nu
ipcheck.py: ip1 looking up sgeiger.mine.nu
ipcheck.py: result: 'sgeiger.mine.nu'[]['139.55.232.72']
sgeiger at minime:~$ sudo /usr/sbin/ipcheck.py -l -r
checkip.dyndns.org:8245 shanerg asdfasdf sgeiger.mine
.nu
sgeiger at minime:~$ sudo /usr/sbin/ipcheck.py -l -r
checkip.dyndns.org:8245 shanerg asdfasdf sgeiger.mine.nu
sgeiger at minime:~$ sudo /usr/sbin/ipcheck.py -l -r
checkip.dyndns.org:8245 shanerg asdfasdf sgeiger.mine.nu
sgeiger at minime:~$

When you run this manually and it works you will see no output.

To add a cron job to update this automatically once a day at 10 am:

###  Note:  This script should be run once a day from cron, like this
(which runs it at 10:15 am every day)
15 10 * * * /usr/bin/python /usr/sbin/ipcheck.py -l -r
checkip.dyndns.org:8245 shanerg asdfasdf sgeiger.mine.nu

To add another names (foobar.mine.nu):
sudo /usr/sbin/ipcheck.py --makedat -l -r checkip.dyndns.org:8245
shanerg rQ9ll0 sgeiger.mine.nu,foobar.mine.nu

...and then put this into the cron tab:
15 10 * * * /usr/bin/python /usr/sbin/ipcheck.py -l -r
checkip.dyndns.org:8245 shanerg asdfasdf sgeiger.mine.nu

Check the mail messages on the computer you are using in case there were
errors.

Note:  This creates a file named /root/ipcheck.dat and /root/ipcheck.log
on my computer.

STEPS FOR ADDING ANOTHER HOST:
  - add the host on dnydns.org
  - run the script with makedat option
  - run the script to update the server

In the example below, ipcheck will update the dyndns.org servers for the
names "sgeiger.mine.nu" and for "myothername.mine.nu":

sgeiger at minime:/root$ sudo /usr/sbin/ipcheck.py --makedat -l -r
checkip.dyndns.org:8245 shanerg asdfasdf
sgeiger.mine.nu,sgeigerbot.mine.nu,myothername.mine.nu
ipcheck.py: There is already an ipcheck.dat file existing.
ipcheck.py: Remove this file first before running --makedat
sgeiger at minime:/root$ sudo mv ipcheck.dat ipcheck.dat-old
sgeiger at minime:/root$ sudo /usr/sbin/ipcheck.py --makedat -l -r
checkip.dyndns.org:8245 shanerg asdfasdf
sgeiger.mine.nu,sgeigerbot.mine.nu,myothername.mine.nu
ipcheck.py: ip1 looking up sgeiger.mine.nu
ipcheck.py: result: 'sgeiger.mine.nu'[]['139.55.233.228']
ipcheck.py: ip2 looking up sgeigerbot.mine.nu
ipcheck.py: result: 'sgeigerbot.mine.nu'[]['139.55.233.228']
ipcheck.py: ip2 looking up myothername.mine.nu
ipcheck.py: result: 'myothername.mine.nu'[]['139.55.233.228']
sgeiger at minime:/root$

sgeiger at minime:/nu/mine/myothername$ sudo crontab -l
15 10 * * *     /usr/sbin/ipcheck.py -l -r checkip.dyndns.org:8245
shanerg asdfasdf sgeiger.mine.nu,sgeigerbot.mine.nu,myothername.mine.nu
--acctfile /root/ipcheck.dat
sgeiger at minime:/nu/mine/myothername$

-- 
Shane Geiger
IT Director
National Council on Economic Education
sgeiger at ncee.net  |  402-438-8958  |  http://www.ncee.net

Leading the Campaign for Economic and Financial Literacy

From MonkeeSage at gmail.com  Sat Dec  1 06:00:24 2007
From: MonkeeSage at gmail.com (MonkeeSage)
Date: Sat, 1 Dec 2007 03:00:24 -0800 (PST)
Subject: "Python" is not a good name, should rename to "Athon"
References: 

	<7e55b84a-43b3-43c6-8adb-3760bc8b3a92@d21g2000prf.googlegroups.com> 
	<5rcqbfF13re18U2@mid.individual.net>
Message-ID: 

On Dec 1, 4:11 am, Bjoern Schliessmann  wrote:
> ureuffyrtu... at gmail.com wrote:
> > New name "Pytn" may be better, do you think so ?
>
> No. How would you pronounce it? Pai-tn?
>
> Why don't you create a fork where the only difference is the name?
>
> Regards,
>
> Bj?rn
>
> --
> BOFH excuse #194:
>
> We only support a 1200 bps connection.

My vote is for "Pyrotron [1] 10,000", heh. ;)

[1] http://en.wikipedia.org/wiki/Disintegrator_ray

Regards,
Jordan

From mensanator at aol.com  Fri Dec  7 17:08:32 2007
From: mensanator at aol.com (mensanator at aol.com)
Date: Fri, 7 Dec 2007 14:08:32 -0800 (PST)
Subject: I'm missing something here with range vs. xrange
References: 
Message-ID: <67b6b3c0-d51b-4ae4-b069-793158ae92bf@j44g2000hsj.googlegroups.com>

On Dec 7, 3:08 pm, "Joe Goldthwaite"  wrote:
> Here's the simple benchmark;
>
> start = time.time()
> for x in xrange(3):
>         for y in xrange(10000000):
>                 pass
> print 'xRange %s' % (time.time() - start)
>
> start = time.time()
> for x in range(3):
>         for y in range(10000000):
>                 pass
> print 'Range %s' % (time.time() - start)
>
> Here's what I get;
>
> xRange 92.5529999733
> Range 95.2669999599
>
> Not a lot of difference.  Range is slower but not by much. I know that range
> builds
> a list then iterates through it. I thought that xrange just kept a counter
> that was
> incremented and returned with each call. No list was ever created. If that's
> true
> (and I guess it's not), xrange would be much faster than range. It seems
> almost
> identical. Given the amount of performance difference, I don't see why
> xrange even
> exists.

Try tracking your memory usage during the benchmark and
it will become very clear why xrange exists.

>
> P.S.  I searched google again to try and find out more about range vs.
> xrange and
> this thread came up first on the list.  That was strange.  I thought I'd
> found
> someone else asking the same question as me until I clicked on the link and
> found
> out it actually was me.
>
>
>
> -----Original Message-----
> From: python-list-bounces+joe=goldthwaites.... at python.org
>
> [mailto:python-list-bounces+joe=goldthwaites.... at python.org]On Behalf Of
> Bjoern Schliessmann
> Sent: Thursday, December 06, 2007 3:33 PM
> To: python-l... at python.org
> Subject: Re: I'm missing something here with range vs. xrange
>
> Joe Goldthwaite wrote:
> > I read that the range function builds a list and that xrange
> > returns an iterator and is therefore more efficient.
>
> This is generally not true.
>
> > In my testing, they both come out to almost exactly the same
> > performance wise.  Did something get changed in Python 2.4 to make
> > them identical?
>
> No. Try again with a list of length 10000000.
>
> Regards,
>
> Bj?rn
>
> --
> BOFH excuse #359:
>
> YOU HAVE AN I/O ERROR -> Incompetent Operator error
>
> --http://mail.python.org/mailman/listinfo/python-list- Hide quoted text -
>
> - Show quoted text -

From half.italian at gmail.com  Thu Dec 13 21:04:00 2007
From: half.italian at gmail.com (Sean DiZazzo)
Date: Thu, 13 Dec 2007 18:04:00 -0800 (PST)
Subject: RegExp Help
References: <0ed0e6b0-a760-4697-9079-fe4153654746@t1g2000pra.googlegroups.com>
Message-ID: <14ff8d0e-3ff4-4428-b7b9-fd270715309d@e10g2000prf.googlegroups.com>

On Dec 13, 5:49 pm, Sean DiZazzo  wrote:
> Hi group,
>
> I'm wrapping up a command line util that returns xml in Python.  The
> util is flaky, and gives me back poorly formed xml with different
> problems in different cases.  Anyway I'm making progress.  I'm not
> very good at regular expressions though and was wondering if someone
> could help with initially splitting the tags from the stdout returned
> from the util.
>
> I have the following example string, and am simply trying to split it
> into two xml tags...
>
> simplified = """2007-12-13 
> \n2007-12-13 
> \n"""
>
> Basically I want the two tags, and to discard anything in between
> using a reg exp.  Like this:
>
> tags = ["", " attr1="text1" attr2="text2" attr3="text3\n" /tag2>"]
>
> I've tried several approaches, some of which got close, but the
> newline in the middle of one of the tags screwed it up.  The closest
> I've been is something like this:
>
> retag = re.compile(r'<.+>*') # tried here with re.DOTALL as well
> tags = re.findall(retag)
>
> Can anyone help me?
>
> ~Sean

I found something that works, although I couldn't tell you why it
works.  :)

retag = re.compile(r'<.+?>', re.DOTALL)
tags = retag.findall(retag)

Why does that work?

~Sean

From gnewsg at gmail.com  Fri Dec 21 13:44:23 2007
From: gnewsg at gmail.com (Giampaolo Rodola')
Date: Fri, 21 Dec 2007 10:44:23 -0800 (PST)
Subject: Understanding memory leak reports
Message-ID: 

Hi,
I'm in a big trouble since I don't know how to find some memory leaks
I just discovered in a program of mine.
By putting:

import gc
gc.set_debug(gc.DEBUG_LEAK)

..at the end of a script which imports a module I wrote it seems I
have some memory leaks scattered around.
The message printed on screen is the following:

gc: collectable 
gc: collectable 
gc: collectable 
gc: collectable 
gc: collectable 
gc: collectable 
gc: collectable 

Since the main module is very big (more than 2800 lines of code) I do
not understand which objects are not garbage collected.
Is there a way to have a more detailed message to know which objects
are not garbage collected?
For example "function foo", "method MyClass.bar", "dict my_dict"...
"function 00C70E70" and "tuple 00C09900" are too much generic messages
which don't give me an idea about where the leak could be.

From mrkafk at gmail.com  Fri Dec  7 08:50:13 2007
From: mrkafk at gmail.com (mrkafk at gmail.com)
Date: Fri, 7 Dec 2007 05:50:13 -0800 (PST)
Subject: File to dict
References: 

	<6d552e59-9841-4af3-85ed-bd144f4f7052@i29g2000prf.googlegroups.com>
	<5rsuf7F166l5tU3@mid.uni-berlin.de>
Message-ID: 

> I guess Duncan's point wasn't the construction of the dictionary but the
> throw it away part.  If you don't keep it, the loop above is even more
> efficient than building a dictionary with *all* lines of the file, just to
> pick one value afterwards.

Sure, but I have two options here, none of them nice: either "write C
in Python" or do it inefficient and still elaborate way.

Anyway, I found my nirvana at last:

>>> def shelper(line):
...     return x.replace(' ','').strip('\n').split(':',1)
...

>>> ownerslist = [ shelper(x)[1] for x in it if len(shelper(x)) == 2 and shelper(x)[0] == domain ]

>>> ownerslist
['da2']

Python rulez. :-)

From deets at nospam.web.de  Mon Dec  3 08:54:20 2007
From: deets at nospam.web.de (Diez B. Roggisch)
Date: Mon, 03 Dec 2007 14:54:20 +0100
Subject: python 2.5 - f=open('a_file.txt','w') gives [Errno 2]
References: <56e9075a-b3aa-4e8e-b5b7-5a58f0305945@s36g2000prg.googlegroups.com>
Message-ID: <5rig4cF14rcenU1@mid.uni-berlin.de>

dirkheld wrote:

> Hi,
> 
> I upgraded my system from tiger to leopard. With leopard came a new
> version of python 2.5
> 
> Now I trying to run some python code that previously worked on tiger
> (which included an older version of python).
> 
> This is the error I'm receiving :
> 
> Traceback (most recent call last):
>   File "test.py", line 18, in print_total
>     f=open('a_file.txt','w')
> IOError: [Errno 2] No such file or directory: 'a_file.txt'
> 
> 
> Is this a bug in python? This code worked on my old system

The obvious question is: do you have 'a_file.txt' on your new system? There
are many happy python programmers on leopard, and this is one heck of a
basic functionality - I really doubt it's broken in such obvious way (if
any at all).

Diez

From Lie.1296 at gmail.com  Sat Dec 22 03:28:20 2007
From: Lie.1296 at gmail.com (Lie)
Date: Sat, 22 Dec 2007 00:28:20 -0800 (PST)
Subject: Odd behavior in Python/Tkinter?
References: <3e6fc1b0-ac5e-42ed-8fe1-76da015c46ac@i29g2000prf.googlegroups.com>

Message-ID: 

On Dec 22, 1:42?pm, Fredrik Lundh  wrote:
> Lie wrote:
> >>> Inspect the following code:
>
> >>> --- start of code ---
> >>> import Tkinter as Tk
> >>> from Tkconstants import *
> >>> root = Tk.Tk()
> >>> e1 = Tk.Entry(root, text = 'Hello World')
> >>> e2 = Tk.Entry(root, text = 'Hello World')
>
> >> the "text" (or "textvariable") option to the Entry widget is the name of
> >> the Tcl variable that should hold the result.
>
> >> to get something that's a bit more usable from Python, use a StringVar
> >> instance instead. ?alternatively, use the "get" method to fetch text
> >> from the widget, and the "insert" method to add text to it.
> > I realized that 'text' isn't a normally valid arguments for Entry (and
> > I'm also aware about the insert, get, etc), but what makes me creep is
> > the fact that the Entry's value would mirror each other if they're set
> > to the same 'text' value
>
> note that you've set the "textvariable" option, not the "text" option.
> Tk allows you to abbreviate option names.
>
> and since you've set the "textvariable" option for both widgets to the
> same variable, you've asked them both to display the same variable.
> Tkinter just does what you've asked it to.
>
> this is no different from using a Tkinter variable to display the same
> value in a number of radiobutton widgets.
>
> 

But an expression (e.g. string) is NOT a variable. It's fine if the
value mirrored when I set the textvariable conf to the same variable,
but in this case I'm setting them to the same expression (e.g. string).

From ilias at lazaridis.com  Tue Dec 18 22:40:10 2007
From: ilias at lazaridis.com (Ilias Lazaridis)
Date: Tue, 18 Dec 2007 19:40:10 -0800 (PST)
Subject: Detecting memory leaks on apache, mod_python
References: <6f624cbd-294b-4a45-bf23-4219d8d6245e@x69g2000hsx.googlegroups.com>
Message-ID: <2e1f149b-adc4-4e63-9161-c3de1bcbae77@j20g2000hsi.googlegroups.com>

On Dec 17, 8:41 am, Ilias Lazaridis  wrote:
> How to detect memory leaks of python programms, which run in an
> environment like this:
>
>  * Suse Linux 9.3
>  * Apache
>  * mod_python
>
> The problem occoured after some updates on the infrastructure. It's
> most possibly caused by trac and it's dependencies, but several
> components of the OS where updated, too.
>
> Any nice tools which play with the above constellation?
>
> Thank's for any hints!

No tool available to detect memory leaks for python applications?

> context:
>
> http://dev.lazaridis.com/base/ticket/148

From mnordhoff at mattnordhoff.com  Wed Dec 26 02:50:40 2007
From: mnordhoff at mattnordhoff.com (Matt Nordhoff)
Date: Wed, 26 Dec 2007 02:50:40 -0500
Subject: Python for web...
In-Reply-To: <983c7459-7388-41ca-a192-b39805ea0b69@s8g2000prg.googlegroups.com>
References: <983c7459-7388-41ca-a192-b39805ea0b69@s8g2000prg.googlegroups.com>
Message-ID: <477207D0.2090701@mattnordhoff.com>

thushianthan15 at gmail.com wrote:
> Hi everyone,
> 
> I have to develop a web based enterprise application for my final year
> project. Since i am interested in open source, i searched the net.
> Almost 90% of them were PHP and MySQL. Cant we use python for that ? I
> tried several sites, but there is not enough tutorial for beginners
> [mod_python, PSP etc]. I couldnt find any detailed book, not even a
> single book :( All the python books are covering only CGI part)
> 
> Any suggestions? Any recommended book?
> 
> Execuse my English.
> 
>                             Thushanthan.

Well, there are multiple different Python web frameworks, including
Django, Pylons, TurboGears and Zope (also the barebones CherryPy).
They're all much more high-level than PHP, including things like
database APIs and templating languages. Most/all of them have books or
at least good documentation and guides.

If you're doing something really simple (one web page, minimal DB usage,
whatever), you can use bare WSGI, perhaps like libraries like Beaker for
sessions.

Google all of the terms I used. There should be information available. :-P
-- 

From greg at cosc.canterbury.ac.nz  Fri Dec 14 02:01:18 2007
From: greg at cosc.canterbury.ac.nz (greg)
Date: Fri, 14 Dec 2007 20:01:18 +1300
Subject: Is Python really a scripting language?
In-Reply-To: <476109f3$0$13493$426a74cc@news.free.fr>
References: <009101c83c55$4ee07a00$6501a8c0@aristotle>

	<4761011a$0$5462$426a74cc@news.free.fr>

	<476109f3$0$13493$426a74cc@news.free.fr>
Message-ID: <5seob2F18i0o7U1@mid.individual.net>

Bruno Desthuilliers wrote:

> http://acmqueue.com/modules.php?name=Content&pa=showpage&pid=273

An interesting quote from that:

> If you combine Simula and Lisp?Lisp didn?t have data structures, it had
> instances of objects?you would have a dynamic type system that would 
> give you the range of expression you need.

Sounds like AK is talking about Python here and doesn't know it...

--
Greg

From Mark.English at rbccm.com  Tue Dec 18 07:15:12 2007
From: Mark.English at rbccm.com (English, Mark)
Date: Tue, 18 Dec 2007 12:15:12 -0000
Subject: operator module isSequenceType with builtin set produces False
Message-ID: 

X-Replace-Address:
mark.ignorethisbit.english at xxxrbccmxxx.ignorethisbittoo_and_removethosep
receding_xxxs_.com

This wasn't what I was expecting, so I thought I'd ask those more
knowledgeable, which is pretty much everybody.
Same result on Python 2.3.5 and Python 2.5.1 installed from python.org
binaries on Windows XP.

>>> try: set
>>> except NameError: from sets import Set as set
>>> class myset_fails(set): pass
>>> class myset_works(set):
>>>     def __getitem__(self): pass
>>> s = set()
>>> fails = myset_fails()
>>> works = myset_works()
>>> import operator
>>> operator.isSequenceType(s) #Not what I expected
False
>>> operator.isSequenceType(fails) #Not what I expected either
False
>>> operator.isSequenceType(works) #A hint at what isSequenceType does ?
True

Are sets not sequences ? I didn't think the isSequenceDisclaimer gave
false negatives.
See Raymond Hettinger's post here too:
http://groups.google.co.uk/group/comp.lang.python/tree/browse_frm/thread
/bd04db20cc1f23bb/36f1f48bb7be1e4b?hl=en&rnum=1&q=set+isSequenceType&_do
ne=%2Fgroup%2Fcomp.lang.python%2Fbrowse_frm%2Fthread%2Fbd04db20cc1f23bb%
2F0454f5debc01c20d%3Fhl%3Den%26lnk%3Dgst%26q%3Dset%2BisSequenceType%26#d
oc_0454f5debc01c20d

Although there are suggestions that it means simply that you're headed
in the wrong direction design wise:
http://www.mail-archive.com/python-dev at python.org/msg11576.html

but then why have isSequenceType at all ?

Not particularly vital. Just implementing __str__ on some class and if
one of the members was a sequence
I was going to format that bit of data in brackets.

Thanks,
Mark

______________________________________________________________________

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From bjourne at gmail.com  Thu Dec 13 07:29:16 2007
From: bjourne at gmail.com (=?ISO-8859-1?Q?BJ=F6rn_Lindqvist?=)
Date: Thu, 13 Dec 2007 13:29:16 +0100
Subject: "do" as a keyword
In-Reply-To: 
References: 

Message-ID: <740c3aec0712130429o8106b4fye1e189dceca7bfc4@mail.gmail.com>

On Dec 11, 2007 4:06 PM, Neil Cerutti  wrote:
>
> However, did you have an specific need for a do-while construct?
> Perhaps we could show you the alternatives.

I have wanted do-while loops in exactly one kind of algorithms, when
you generate something and you have to keep trying until it gets
right. For example, generating random and non-overlapping points on a
grid:

    import random
    grid = dict()
    for i in range(10):
        while True:
            x = random.randint(0, 4)
            y = random.randint(0, 4)
            if not (x, y) in grid:
                break
        grid[x, y] = 1

The loop runs one or more times until a vacant spot in the grid is
found. This type problem would be better expressed using a do-while:

    import random
    grid = dict()
    for i in range(10):
        do:
            x = random.randint(0, 4)
            y = random.randint(0, 4)
        while (x, y) in grid
        grid[x, y] = 1

-- 
mvh Bj?rn

From sgeiger at ncee.net  Fri Dec 28 13:42:38 2007
From: sgeiger at ncee.net (Shane Geiger)
Date: Fri, 28 Dec 2007 12:42:38 -0600
Subject: SVGDraw is where?
Message-ID: <4775439E.8090703@ncee.net>

Does someone know where SVGDraw has gone?  It used to be here: 
http://www2.sfk.nl/svg/

Googling hasn't helped me locate it.  :-\

-- 
Shane Geiger
IT Director
National Council on Economic Education
sgeiger at ncee.net  |  402-438-8958  |  http://www.ncee.net

Leading the Campaign for Economic and Financial Literacy

From asterix at lagaule.org  Mon Dec  3 10:11:46 2007
From: asterix at lagaule.org (Yann Leboulanger)
Date: Mon, 03 Dec 2007 16:11:46 +0100
Subject: os.access() under windows
In-Reply-To: 
References: <47512df4$0$29713$426a74cc@news.free.fr>	<475406CE.5060509@v.loewis.de>	<47540a65$0$28941$426a74cc@news.free.fr>	<47540F7D.6010900@timgolden.me.uk>

Message-ID: <47541CB2.8030409@lagaule.org>

Tim Golden a ?crit :
> 
> I'm happy to contribute a doc patch if I can imagine what
> exactly to write.
> 

"Don't use it under windows, always consider it's True"?

Maybe it would be a good idea to remove support for windows for this 
function, or make it always return True?
Current behaviour is worth that nothing, access() return False but 
open() doesn't fail ...

-- 
Yann

From istvan.albert at gmail.com  Sun Dec 30 09:07:09 2007
From: istvan.albert at gmail.com (Istvan Albert)
Date: Sun, 30 Dec 2007 06:07:09 -0800 (PST)
Subject: Bizarre behavior with mutable default arguments
References: 
	<47768DE0.5050406@v.loewis.de>

	<2541af1e-9167-4cee-b773-8f6ab0f23b8f@i12g2000prf.googlegroups.com> 
	<13ndpflarf19i9c@corp.supernews.com>
	<041ea3ab-2d08-49b0-96db-c2ec7f0d7f8f@z26g2000pre.googlegroups.com>

Message-ID: <0589e497-9857-44b3-be71-46318c5fb93c@e23g2000prf.googlegroups.com>

On Dec 29, 11:21 pm, bukzor  wrote:

> The standard library is not affected because

the people who wrote code into it know how python works.

Programming abounds with cases that some people think should work
differently:

a = b = []
a.append(1)

is b empty or not at this point? Get informed, remember the rules, be
happy and move on to write some cool code.

There is little new in what you say. Every so often someone is having
a confusing time with a feature and therefore proposes that the
language be changed to match his/her expectations.

i.

From petr.jakes.tpc at gmail.com  Tue Dec 25 13:06:51 2007
From: petr.jakes.tpc at gmail.com (petr.jakes.tpc at gmail.com)
Date: Tue, 25 Dec 2007 10:06:51 -0800 (PST)
Subject: how to generate html table from "table" data?
Message-ID: 

Hi group,
I would like to convert the output of the SQL query, or more generally
I would like to convert any "table" data to the html table.

I would like to set some rules to format cells, columns or rows (font,
colour etc.) of the html table, according to the values in the
specific cells.

Googling for a while I have found only this tool:
http://pasko.net/PyHtmlTable/

Your tips to some other tools or/and your suggestion how to solve
above mentioned will be very helpful.

Thanks and regards

Petr Jakes

From sturlamolden at yahoo.no  Thu Dec 13 16:35:24 2007
From: sturlamolden at yahoo.no (sturlamolden)
Date: Thu, 13 Dec 2007 13:35:24 -0800 (PST)
Subject: Is a "real" C-Python possible?
References:  

	<6949214e-8f23-431b-b24f-b8e50460f25a@i12g2000prf.googlegroups.com> 
	<422a001f-09df-44d8-a7b2-f8423dccc48a@a35g2000prf.googlegroups.com> 

	<0b099c51-b7f1-4d28-bda7-0352d7fa513d@s12g2000prg.googlegroups.com>

	<8209a914-e3ff-4af3-86f2-f4d2bdaa891d@c4g2000hsg.googlegroups.com>

Message-ID: <974cf980-a8a0-4a58-9686-9a17f895d9df@i12g2000prf.googlegroups.com>

On 13 Des, 19:16, "Chris Mellon"  wrote:

> I don't feel that it's especially inconsistent, and I like decorators.
> Having to write foo everywhere isn't that nice, but it's only mildly
> worse than C# to me - I find the extra block levels really atrocious.

Personally I find properties atrocious and unsafe. One cannot
distinguish between a function call and binding an attribute in a
statement like:

foo.bar = 2 # Does this call a function or bind an attribute?
            # Is this foo.setBar(2) or setattr(foo,'bar',2)?

Even worse: if we make a typo, the error will not be detected as the
syntax is still valid. Properties and dynamic binding do not mix.

From rpdooling at gmail.com  Mon Dec 10 23:44:13 2007
From: rpdooling at gmail.com (Rick Dooling)
Date: Mon, 10 Dec 2007 20:44:13 -0800 (PST)
Subject: newbie
References: <475defe8$0$8799$4c368faf@roadrunner.com>
Message-ID: <0631f13b-a916-4949-80b1-7466a592a137@w56g2000hsf.googlegroups.com>

On Dec 10, 8:03 pm, "Whizzer"  wrote:
> Is OReilly's Learning Python a good place to start learning to program?
> I've been told Python is a good first language.
>
> Thanks for the advice.

If you already have Python installed,just go to the bottom of this
article and check the various links and recommended books.  Good luck.

http://tinyurl.com/w7wgp

rd

From jfgreen1 at gmail.com  Mon Dec 24 10:12:57 2007
From: jfgreen1 at gmail.com (JimG)
Date: Mon, 24 Dec 2007 07:12:57 -0800 (PST)
Subject: missing pydoc gui
References: 
Message-ID: <2d895dd7-6610-42e0-99fb-de4ab03fc528@l32g2000hse.googlegroups.com>

On Dec 24, 9:23 am, JimG  wrote:
> I just read about the pydoc gui in "Learning Python."  But it's
> mysteriously absent from my Fedora 8 Python installation.  Searching
> the filesystem exhaustively turns up no pydocgui script anywhere, and
> not only does "pydoc -g" not work, my Python documentation has no
> mention of it, it describes pydoc -p (and that works fine) but not
> pydoc -g.
>
> My theory is I'm missing some package that contains it.  However I've
> been completely stymied in my efforts to identify one.  I already have
> python-tools, python-docs, python-docutils, and python-devel, among
> others.  Any help would be greatly appreciated, thanks.

I forgot to mention it's Python version 2.5.1.

From sfrabe at gkco.com  Thu Dec 27 13:49:28 2007
From: sfrabe at gkco.com (sfrabe at gkco.com)
Date: Thu, 27 Dec 2007 13:49:28 -0500
Subject: Blasting new year
Message-ID: <4773F3B8.1040103@hetnet.nl>

Wishes for the new year
http://newyearcards2008.com/

From mnordhoff at mattnordhoff.com  Wed Dec 26 18:05:29 2007
From: mnordhoff at mattnordhoff.com (Matt Nordhoff)
Date: Wed, 26 Dec 2007 18:05:29 -0500
Subject: save gb-2312 web page in a .html file
In-Reply-To: 
References: 
Message-ID: <4772DE39.3070307@mattnordhoff.com>

Peter Pei wrote:
> I am trying to read a web page and save it in a .html file. The problem is 
> that the web page is GB-2312 encoded, and I want to save it to the file with 
> the same encoding or unicode. I have some code like this:
>     url = 'http://blah/'
>     headers = { 'User-Agent' : 'Mozilla/4.0 (compatible; MSIE 5.5; Windows 
> NT)' }
> 
>     req = urllib2.Request(url, None, headers)
>     page = urllib2.urlopen(req).read()
> 
>     file = open('btchina.html','wb')
>     file.write(page.encode('gb-2312'))
>     file.close()
> 
> It is obviously not working, and I am hoping someone can help me.

.read() returns the bytes exactly how it downloads them. It doesn't
interpret them. If those bytes are GB-2312-encoded text, that's what
they are. There's no need to reencode them. Just .write(page) (of
course, this way you don't verify that it's correct).

(BTW, don't use 'file' as a variable name. It's an alias of the 'open()'
function.)
-- 

From int32bit at yahoo.com  Sat Dec 29 18:31:30 2007
From: int32bit at yahoo.com (int32bit at yahoo.com)
Date: Sat, 29 Dec 2007 15:31:30 -0800 (PST)
Subject: error on importing variable value
Message-ID: <69bd26ea-0c9d-4556-9390-790f21526e2d@t1g2000pra.googlegroups.com>

I can't figure out why this doesn't work. Any ideas appreciated.

conn = MySQLdb.connect (db = "vocab")
cursor = conn.cursor ()
cursor.execute ("SELECT VERSION()")
row = cursor.fetchone ()
print "server version:", row[0]
cursor.close ()
conn.close ()

gives:

server version: 5.0.44-log

but

import defs
conn = MySQLdb.connect (defs.connect)
cursor = conn.cursor ()
cursor.execute ("SELECT VERSION()")
row = cursor.fetchone ()
print "server version:", row[0]
cursor.close ()
conn.close ()

where defs.py is

connect = 'db = "vocab"'

gives:

Traceback (most recent call last):
	  File "./add_words", line 17, in ?
	      conn = MySQLdb.connect (defs.connect)
	  File "/usr/lib/python2.4/site-packages/MySQLdb/__init__.py", line
74, in Connect
	      return Connection(*args, **kwargs)
	  File "/usr/lib/python2.4/site-packages/MySQLdb/connections.py",
line 170, in __init__
	      super(Connection, self).__init__(*args, **kwargs2)
	_mysql_exceptions.OperationalError: (2005, 'Unknown MySQL server host
\'db = "vocab"\' (3)')

From martin at v.loewis.de  Sat Dec  8 09:56:08 2007
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Sat, 08 Dec 2007 15:56:08 +0100
Subject: distutils & OS X universal binaries
In-Reply-To: <475AA774.7020904@jessikat.plus.net>
References: <475AA774.7020904@jessikat.plus.net>
Message-ID: <475ab088$0$19620$9b622d9e@news.freenet.de>

> One proposed fix is to make the endian variable code dynamically change
> at run time.

I would advise against that. Endianness depdency should be resolved at
compile time, with appropriate conditional compilation. Endianness won't
change at run-time (and no, not even for a fat binary - the x86 code
will always "see" the same endianness, and so will the ppc code).

> Is there a way to get distutils to pass different macros/definitions to
> the separate compilations.

No. distutils only invokes the compiler a single time, not multiple
times, for a specific universal object file. The gcc driver then invokes
different cc1 backends repeatedly.

> Failing that does anyone know off hand exactly how this problem is
> supposed to be handled? Ie if there are multiple compiles what
> distinguishes them. My understanding is that up to 4 different binaries
> are being squashed together in these universal binaries.

In the specific case, just use the WORDS_BIGENDIAN macro defined in
pyconfig.h; it will be defined if the target is bigendian, and
undefined otherwise. In the case of a universal build, it will be
undefined in the x86 compiler invocation, and defined in the ppc
invocation.

If you are curious as to how it arranges that, read the source.

Regards,
Martin

From lloyd at paisite.com  Thu Dec 13 14:50:20 2007
From: lloyd at paisite.com (lloyd at paisite.com)
Date: Thu, 13 Dec 2007 14:50:20 -0500 (EST)
Subject: Python implementation of "include"
Message-ID: <44880.192.168.1.71.1197575420.webmail@192.168.1.71>

Hello,

I've been using the
Python-based Karrigell web application framework. It has the very handy
word "include" that inserts a code file into into the stream of
execution. E.g. if myFile.py contains the code:

print "This is a message from myFile.py
"

and my script is:

print "Something
"
include "myFile.py"
print "Something more
"

The output would be:

Something
This is a message from myFile.py
Something more

Since
I'm considering moving my application to a different web application
framework, I'd like to replace include with a pure python construct.
I've discovered several ways to do it, but they all seem kludgy in one
way or another. Is there a simple, elegant way to do this?

Many thanks,

Lloyd

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From horpner at yahoo.com  Thu Dec 13 10:38:03 2007
From: horpner at yahoo.com (Neil Cerutti)
Date: Thu, 13 Dec 2007 15:38:03 GMT
Subject: Is Python really a scripting language?
References: <009101c83c55$4ee07a00$6501a8c0@aristotle>

	<2bc2ab76-da7b-43ec-969d-33f77b174a56@e6g2000prf.googlegroups.com>
	<13m12513p8pfqb4@corp.supernews.com>

	<47614e83$0$6142$426a74cc@news.free.fr>
Message-ID: 

On 2007-12-13, Bruno Desthuilliers  wrote:
> Neil Cerutti a ?crit :
>> On 2007-12-13, Steven D'Aprano  wrote:
>>> I have repeatedly argued in the past that we do ourselves a
>>> disservice by describing Python as an interpreted language.
>>>
>>> Python is compiled. It has a compiler. It even has a built-in
>>> function "compile". It's just not compiled to *machine code* --
>>> but with even machine code often running on a virtual machine
>>> in the CPU(s), the distinction is far less important now than
>>> it was when Sun described Java as a compiled language despite
>>> the lack of JIT compilers.
>> 
>> When folks say Python is an interpreted language I think they
>> mean it informally--they just mean you have to run an interpreter
>> to execute it. 
>
> How often do you hear that Java is "an interpreted language" ?

The difference is the p-code factor. Python's p-code is
(generally) internal only. We could fool more people if we forced
them to create .pyc files before executing the code. ;-)

-- 
Neil Cerutti

From martin at v.loewis.de  Mon Dec  3 08:38:22 2007
From: martin at v.loewis.de (=?ISO-8859-1?Q?=22Martin_v=2E_L=F6wis=22?=)
Date: Mon, 03 Dec 2007 14:38:22 +0100
Subject: os.access() under windows
In-Reply-To: <47512df4$0$29713$426a74cc@news.free.fr>
References: <47512df4$0$29713$426a74cc@news.free.fr>
Message-ID: <475406CE.5060509@v.loewis.de>

> I create a folder test under e:
> 
> then os.access('e:\\test', os.W_OK) returns True. Everything's ok.
> 
> Now I move My Documents to this e:\test folder
> 
> Then os.access('e:\\test', os.W_OK) returns False !!

This description is, unfortunately, too imprecise to allow reproducing
that effect. What precisely do you mean by "I move My Documents to
this e:\test folder"?

Regards,
Martin

From asterix at lagaule.org  Mon Dec  3 08:53:41 2007
From: asterix at lagaule.org (Yann Leboulanger)
Date: Mon, 03 Dec 2007 14:53:41 +0100
Subject: os.access() under windows
In-Reply-To: <475406CE.5060509@v.loewis.de>
References: <47512df4$0$29713$426a74cc@news.free.fr>
	<475406CE.5060509@v.loewis.de>
Message-ID: <47540a65$0$28941$426a74cc@news.free.fr>

Martin v. L?wis a ?crit :
>> I create a folder test under e:
>>
>> then os.access('e:\\test', os.W_OK) returns True. Everything's ok.
>>
>> Now I move My Documents to this e:\test folder
>>
>> Then os.access('e:\\test', os.W_OK) returns False !!
> 
> This description is, unfortunately, too imprecise to allow reproducing
> that effect. What precisely do you mean by "I move My Documents to
> this e:\test folder"?
> 

I Right click on "My Documents" folder, and change the path to e:\test 
there.
So that "My documents" folder points to e:\test

From cwitts at gmail.com  Wed Dec  5 06:59:47 2007
From: cwitts at gmail.com (Chris)
Date: Wed, 5 Dec 2007 03:59:47 -0800 (PST)
Subject: Omitting results with id3reader [Beginner]
References: <9cd7f847-aea1-42bf-8601-a6ac4364d570@d27g2000prf.googlegroups.com>

Message-ID: <8559e45a-af5e-464a-b6fc-4cba7ad9fad8@b15g2000hsa.googlegroups.com>

Ok, just noticed you linked the id3reader.  I tested my code and it
worked fine.

From cwitts at gmail.com  Thu Dec 20 14:02:07 2007
From: cwitts at gmail.com (Chris)
Date: Thu, 20 Dec 2007 11:02:07 -0800 (PST)
Subject: Python; jump to a concrete line
References: <5c5cbbd1-cc3c-4229-b6c1-753b2e538681@p69g2000hsa.googlegroups.com>

Message-ID: 

On Dec 20, 8:13 pm, "Russell Blau"  wrote:
> "Horacius ReX"  wrote in message
>
> news:5c5cbbd1-cc3c-4229-b6c1-753b2e538681 at p69g2000hsa.googlegroups.com...
>
> > Hi, sorry but after looking for information, I still did not get how,
> > when reading a text file in python, can one jump to a concrete line
> > and then read the different data (separated by spaces). In each line
> > there is different number of columns so sometimes i get kind of "index
> > out" error. Is there a better way to read the different data on each
> > row and avoiding to know the exact number of columns ?
>
> Have you considered using the file.readlines() method?
>
> Russ

.readlines() will hog some resources on large files.
file.read().splitlines()[ line_to_seek ]
might be the fastest way for small files, but also will swell for
larger ones.
Also, one line way to get what you want:
[a for (i,a) in enumerate(input_file) if i == line_to_seek]

From half.italian at gmail.com  Fri Dec 14 12:45:05 2007
From: half.italian at gmail.com (Sean DiZazzo)
Date: Fri, 14 Dec 2007 09:45:05 -0800 (PST)
Subject: RegExp Help
References: <0ed0e6b0-a760-4697-9079-fe4153654746@t1g2000pra.googlegroups.com>
	<5sernlF187t49U2@mid.uni-berlin.de>
	<0b20a449-cbbd-483e-b348-5f549daf86f5@i29g2000prf.googlegroups.com>

Message-ID: <79daa07d-c4d8-4161-8616-00effab0b5a0@e23g2000prf.googlegroups.com>

On Dec 14, 3:06 am, "Gabriel Genellina" 
wrote:
> En Fri, 14 Dec 2007 06:06:21 -0300, Sean DiZazzo   
> escribi?:
>
>
>
> > On Dec 14, 12:04 am, Marc 'BlackJack' Rintsch  wrote:
> >> On Thu, 13 Dec 2007 17:49:20 -0800, Sean DiZazzo wrote:
> >> > I'm wrapping up a command line util that returns xml in Python.  The
> >> > util is flaky, and gives me back poorly formed xml with different
> >> > problems in different cases.  Anyway I'm making progress.  I'm not
> >> > very good at regular expressions though and was wondering if someone
> >> > could help with initially splitting the tags from the stdout returned
> >> > from the util.
>
> >> Flaky XML is often produced by programs that treat XML as ordinary text
> >> files. If you are starting to parse XML with regular expressions you are
> >> making the very same mistake.  XML may look somewhat simple but
> >> producing correct XML and parsing it isn't.  Sooner or later you stumble
> >> across something that breaks producing or parsing the "naive" way.
>
> > It's not really complicated xml so far, just tags with attributes.
> > Still, using different queries against the program sometimes offers
> > differing results...a few examples:
>
> > 
> > 
> > 
> > 
>
> Ouch... only the second is valid xml. Most tools require at least a well  
> formed document. You may try using BeautifulStoneSoup, included with  
> BeautifulSouphttp://crummy.com/software/BeautifulSoup/
>
> > I found something that works, although I couldn't tell you why it
> > works.  :)
> >  retag = re.compile(r'<.+?>', re.DOTALL)
> > tags = retag.findall(retag)
> >  Why does that work?
>
> That means: "look for a less-than sign (<), followed by the shortest  
> sequence of (?) one or more (+) arbitrary characters (.), followed by a  
> greater-than sign (>)"
>
> If you never get nested tags, and never have a ">" inside an attribute,  
> that expression *might* work. But please try BeautifulStoneSoup, it uses a  
> lot of heuristics trying to guess the right structure. Doesn't work  
> always, but given your input, there isn't much one can do...
>
> --
> Gabriel Genellina

Thanks!  I'll take a look at BeautifulStoneSoup today and see what I
get.

~Sean

From waldemar.osuch at gmail.com  Sat Dec 29 19:08:29 2007
From: waldemar.osuch at gmail.com (Waldemar Osuch)
Date: Sat, 29 Dec 2007 16:08:29 -0800 (PST)
Subject: pdf library.
References: <133097f4-de83-4e13-93f1-1404213333a4@l6g2000prm.googlegroups.com>
Message-ID: 

On Dec 29, 11:54 am, Shriphani  wrote:
> Hi,
> I am looking for a pdf library that will give me a list of pages where
> new chapters start. Can someone point me to such a module ?
> Regards,
> Shriphani P.

pyPdf may help you with that:
http://pybrary.net/pyPdf/

From acherry at btinternet.com  Wed Dec  5 10:19:43 2007
From: acherry at btinternet.com (Adrian Cherry)
Date: 5 Dec 2007 15:19:43 GMT
Subject: "Python" is not a good name, should rename to "Athon"
References: 
	<78bdd499-a263-4c68-8e43-e3e59b111c7e@a39g2000pre.googlegroups.com>
Message-ID: 

"Russ P."  wrote in
news:78bdd499-a263-4c68-8e43-e3e59b111c7e at a39g2000pre.googlegro
ups.com: 

> Speaking of stupid names, what does "C++" mean? I think it's
> the grade you get when you just barely missed a "B--". But I
> can't deny that it *is* good for searching.
> 

For that matter C# is no better, I thought that # was pronounced 
hash, I still refer to C# as C-hash.

Adrian

From rodmena.com at gmail.com  Sun Dec  2 09:56:51 2007
From: rodmena.com at gmail.com (farsheed)
Date: Sun, 2 Dec 2007 06:56:51 -0800 (PST)
Subject: C++2py
Message-ID: 

I,m looking for a tool for converting c++ to python. Any Ideas?
TIA.

From python at hope.cz  Wed Dec  5 03:55:54 2007
From: python at hope.cz (Johny)
Date: Wed, 5 Dec 2007 00:55:54 -0800 (PST)
Subject: How to split string
Message-ID: <64e1d077-b075-4320-849a-52a1b8b508a8@s8g2000prg.googlegroups.com>

I have a string of a variable length and I need to split the string
in strings of 6 characters .
But if the 6th character is not space then I must split the string
at possition  before the 6th character.

For example:
if the main string  S is

S='abcde fghc ijkl mnop'

the result should be
abcde
fghc
ijkl
mnop

Do you have any idea how it can be done?
Thank you
L.

From duncan.booth at invalid.invalid  Wed Dec 12 13:04:43 2007
From: duncan.booth at invalid.invalid (Duncan Booth)
Date: 12 Dec 2007 18:04:43 GMT
Subject: Help needed with python unicode cgi-bin script
References: 
	<475cefe8$0$31165$9b622d9e@news.freenet.de>
	<8tj7j.5048$bW.4346@trnddc07>
	<24f3c1af-bf57-4b94-8d02-d7e956764f90@s8g2000prg.googlegroups.com>

	<0f09d97f-d742-4a3e-a459-91e730748d7e@b1g2000pra.googlegroups.com>
	<_vE7j.5156$bW.2309@trnddc07>
	<475f1dc4$0$19340$9b622d9e@news.freenet.de>

	<6dK7j.8027$581.1065@trnddc04>

	<3EU7j.9800$3s1.357@trnddc06>
Message-ID: 

"weheh"  wrote:

> Hi Duncan, thanks for the reply.
>>>
>> FWIW, the code you posted only ever attempted to set the character
>> set encoding using an html meta tag which is the wrong place to set
>> it. The encoding specified in the HTTP headers always takes
>> precedence. This is why
>> the default charset setting in Apache was the one which applied.
>>
>> What you should have been doing was setting the encoding in the
>> content- type header. i.e. in this line of your code:
>>
>>   print u"""Content-Type: text/html
>>
>> You should have changed it to read:
>>
>>   Content-Type: text/html; charset=windows-1252
>>
>> but because you didn't Apache was quietly changing it to read:
>>
>>   Content-Type: text/html; charset=utf-8
>>
> Will this work under the following situation? Let's say the user is
> filling out a text field on a form on my website. The user has their
> browser encoding set to utf8. My website has charset=windows-1252 as
> you indicate above. Will I run into a conflict somewhere? 
> 
If you are sending the user a form you should be specifying the acceptable 
character sets with the accept-charset attribute on the form tag. Basically 
the rule should be to pick an appropriate character set and stick to it. 
don't depend on defaults, be explicit.

From sjmachin at lexicon.net  Fri Dec  7 17:09:25 2007
From: sjmachin at lexicon.net (John Machin)
Date: Fri, 7 Dec 2007 14:09:25 -0800 (PST)
Subject: I'm missing something here with range vs. xrange
References: 
Message-ID: <10ad123e-2e63-4c62-8ab3-e06f02d3a179@i29g2000prf.googlegroups.com>

On Dec 8, 8:08 am, "Joe Goldthwaite"  wrote:
> Here's the simple benchmark;
>
> start = time.time()
> for x in xrange(3):
>         for y in xrange(10000000):
>                 pass
> print 'xRange %s' % (time.time() - start)
>
> start = time.time()
> for x in range(3):
>         for y in range(10000000):
>                 pass
> print 'Range %s' % (time.time() - start)
>
> Here's what I get;
>
> xRange 92.5529999733
> Range 95.2669999599
>
> Not a lot of difference.  Range is slower but not by much.

90+ seconds?? What hardware, OS, and Python version? What else was
running in the background?

With this kit:
OS Name:	Microsoft Windows XP Professional
Version:	5.1.2600 Service Pack 2 Build 2600
Processor:	x86 Family 15 Model 36 Stepping 2 AuthenticAMD ~1995 Mhz
Python: Python 2.5.1 (r251:54863, Apr 18 2007, 08:51:08) [MSC v.1310
32 bit (Intel)] on win32

and your exact code, I get:
xRange 4.0
Range 5.0

After changing time.time to time.clock, I get:
xRange 4.00560127055
Range 4.8927366467

After making the "benchmark" somewhat more realistic by executing it
inside a function, I get:
xRange 1.86865816745
Range 3.31902658019

By "inside a function", I mean changing