From daniel at danielveazey.com  Sat Aug  6 14:40:17 2011
From: daniel at danielveazey.com (Daniel Veazey)
Date: Sat, 6 Aug 2011 07:40:17 -0500
Subject: [PyAR2] .upper()
Message-ID: <CAML=PJxaSx2aO3pu9KPMcqpeEYmW9ct39m-D5OGyCyt8kygGaQ@mail.gmail.com>

Almost a total noob here, getting stumped. Using Python 2.7.1+. Here is my
code:

while True:
    reply = input("Enter text: ")
    if reply == 'stop': break
    print(reply.upper())

It's supposed to just take the text that the user has entered and print it
in uppercase, unless the user types 'stop.'

But I get errors when I run it:

Enter text: word
Traceback (most recent call last):
  File "upper.py", line 2, in <module>
    reply = input("Enter text: ")
  File "<string>", line 1, in <module>
NameError: name 'word' is not defined

Enter text: stop
Traceback (most recent call last):
  File "upper.py", line 2, in <module>
    reply = input("Enter text: ")
  File "<string>", line 1, in <module>
NameError: name 'stop' is not defined

Enter text: two words
Traceback (most recent call last):
  File "upper.py", line 2, in <module>
    reply = input("Enter text: ")
  File "<string>", line 1
    two words
            ^
SyntaxError: unexpected EOF while parsing

Any tips?
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From pyar2 at cowsgomoo.org  Sat Aug  6 14:46:00 2011
From: pyar2 at cowsgomoo.org (Coltrey Mather)
Date: Sat, 6 Aug 2011 07:46:00 -0500
Subject: [PyAR2] .upper()
In-Reply-To: <CAML=PJxaSx2aO3pu9KPMcqpeEYmW9ct39m-D5OGyCyt8kygGaQ@mail.gmail.com>
References: <CAML=PJxaSx2aO3pu9KPMcqpeEYmW9ct39m-D5OGyCyt8kygGaQ@mail.gmail.com>
Message-ID: <CAE307+_YQ5EFywMxRqXz92S4K9FJDr-PjzuhgG_sOUahDQLJ4Q@mail.gmail.com>

You want to use raw_input(), not input().  input() will send whatever
you input to the python interpreter for evaluation and return its
result.  raw_input will return a string of your input.


raw_input(...)
    raw_input([prompt]) -> string

    Read a string from standard input.  The trailing newline is stripped.
    If the user hits EOF (Unix: Ctl-D, Windows: Ctl-Z+Return), raise EOFError.
    On Unix, GNU readline is used if enabled.  The prompt string, if given,
    is printed without a trailing newline before reading.


input(...)
    input([prompt]) -> value

    Equivalent to eval(raw_input(prompt)).


On Sat, Aug 6, 2011 at 07:40, Daniel Veazey <daniel at danielveazey.com> wrote:
> Almost a total noob here, getting stumped. Using Python 2.7.1+. Here is my
> code:
>
> while True:
> ??? reply = input("Enter text: ")
> ??? if reply == 'stop': break
> ??? print(reply.upper())
>
> It's supposed to just take the text that the user has entered and print it
> in uppercase, unless the user types 'stop.'
>
> But I get errors when I run it:
>
> Enter text: word
> Traceback (most recent call last):
> ? File "upper.py", line 2, in <module>
> ??? reply = input("Enter text: ")
> ? File "<string>", line 1, in <module>
> NameError: name 'word' is not defined
>
> Enter text: stop
> Traceback (most recent call last):
> ? File "upper.py", line 2, in <module>
> ??? reply = input("Enter text: ")
> ? File "<string>", line 1, in <module>
> NameError: name 'stop' is not defined
>
> Enter text: two words
> Traceback (most recent call last):
> ? File "upper.py", line 2, in <module>
> ??? reply = input("Enter text: ")
> ? File "<string>", line 1
> ??? two words
> ??????????? ^
> SyntaxError: unexpected EOF while parsing
>
> Any tips?
>
>
> _______________________________________________
> PyAR2 mailing list
> PyAR2 at python.org
> http://mail.python.org/mailman/listinfo/pyar2
>
>

From ccn at panix.com  Sat Aug  6 18:18:41 2011
From: ccn at panix.com (Chris Nestrud)
Date: Sat, 6 Aug 2011 11:18:41 -0500
Subject: [PyAR2] .upper()
In-Reply-To: <CAML=PJxaSx2aO3pu9KPMcqpeEYmW9ct39m-D5OGyCyt8kygGaQ@mail.gmail.com>
References: <CAML=PJxaSx2aO3pu9KPMcqpeEYmW9ct39m-D5OGyCyt8kygGaQ@mail.gmail.com>
Message-ID: <20110806161841.GE23875@panix.com>

Try using raw_input instead of input. The input function expects a valid
Python expression. The raw_input function is for general input. See
http://docs.python.org/library/functions.html

Chris

On Sat, Aug 06, 2011 at 07:40:17AM -0500, Daniel Veazey wrote:
> Almost a total noob here, getting stumped. Using Python 2.7.1+. Here is my
> code:
> 
> while True:
>     reply = input("Enter text: ")
>     if reply == 'stop': break
>     print(reply.upper())
> 
> It's supposed to just take the text that the user has entered and print it
> in uppercase, unless the user types 'stop.'
> 
> But I get errors when I run it:
> 
> Enter text: word
> Traceback (most recent call last):
>   File "upper.py", line 2, in <module>
>     reply = input("Enter text: ")
>   File "<string>", line 1, in <module>
> NameError: name 'word' is not defined
> 
> Enter text: stop
> Traceback (most recent call last):
>   File "upper.py", line 2, in <module>
>     reply = input("Enter text: ")
>   File "<string>", line 1, in <module>
> NameError: name 'stop' is not defined
> 
> Enter text: two words
> Traceback (most recent call last):
>   File "upper.py", line 2, in <module>
>     reply = input("Enter text: ")
>   File "<string>", line 1
>     two words
>             ^
> SyntaxError: unexpected EOF while parsing
> 
> Any tips?

> _______________________________________________
> PyAR2 mailing list
> PyAR2 at python.org
> http://mail.python.org/mailman/listinfo/pyar2


From chris at jsconf.com  Tue Aug  9 04:27:18 2011
From: chris at jsconf.com (Chris Williams)
Date: Mon, 8 Aug 2011 22:27:18 -0400
Subject: [PyAR2] PyCodeConf is in Miami, Florida, October 6 and 7
Message-ID: <CAPx6veSdCj3OHYVgLo_iDhMgA3Sp-0yGzeaKfrjTZOp4O81h_Q@mail.gmail.com>

Hi everyone, I am the curator of GitHub's new PyCodeConf
http://py.codeconf.com happening in Miami, Florida on October 6th and
7th. This conference is a single track, intimate experience for Python
developers with a deep focus on the future of the language (where it
is going and why). We have gathered speakers including Audrey Roy,
Alex Gaynor, Travis Oliphant, Avery Pennarun, Jesse Noller, Gary
Bernhardt and many more for two days of amazing presentations. There
will be at least two fully inclusive evening social events designed to
give you a taste of Miami and direct access to the speakers and other
attendees. PyCodeConf is being held at the luxury boutique Epic Hotel
where attendees can book a room at the special rate of $179/night.

The event is presented by GitHub as part of the CodeConf series, the
first of which was a huge success in San Francisco. As with every
CodeConf event, we believe that coding is about more than just code.
Whether it's building a solid community, writing good documentation,
or hacking space exploration, CodeConf is about improving the software
ecosystem through best practices and social interactions. Come with an
open mind and leave a better programmer.

Early bird tickets have already sold out, but general admission tickets are
available for $600 (includes conference and all social events). We are
happy to offer you a local Python user group discount of $150 with
the registration link below. If you have a long purchasing process
we can hold ticket slots for you, just email us at codeconf at github.com

https://eventrainbow.com/github/pycodeconf?promo=pyuser

We look forward to seeing you in Miami!

Chris Williams and the CodeConf Team



-- 
Chris Williams
Twitter: http://twitter.com/voodootikigod

The things I make that you should check out:
OurParents: http://ourparents.com
PromoteJS: http://promotejs.com
JSConf US: http://jsconf.us
Minute With: http://minutewith.com
JSConf Live: http://jsconflive.com
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From pythonlarry at gmail.com  Mon Aug 15 15:24:36 2011
From: pythonlarry at gmail.com (Larry Hale)
Date: Mon, 15 Aug 2011 08:24:36 -0500
Subject: [PyAR2] PyAR 2011
In-Reply-To: <CAF8U9ywhrRhKnE-vMHs_DXOEY-1hxR66mt1Nm6KaR20ncEJ5pA@mail.gmail.com>
References: <CAF8U9ywhrRhKnE-vMHs_DXOEY-1hxR66mt1Nm6KaR20ncEJ5pA@mail.gmail.com>
Message-ID: <CAF9++iNAra-LL0SESVCBviHfKu94vwuB+sRxiCianRXyh14riw@mail.gmail.com>

An FYI for those looking to join the pyar2-organizers mailing list: go to
http://mail.python.org/mailman/listinfo + slash + "pyar2-organizers".  (It
seems to be an "unpublished"/"unadvertised" list.  I didn't "find" the page
so much as took a lucky guess.  :o)


[1] I would like to help however I can!


[2] As for topics I'd like covered:

    Documentation (Sphinx)

    Python + SVN Integration
        Check-In/-Out conformity scripts, especially
            How to have unified code formatting on the back end, whilst
allowing programmers the flexibility for however they prefer to code/view
source on their end.
                Utilities suggested for this purpose.

    Python Libraries, Eggs, HOW-TO Workshop
        Or at least a demo of creating one, top-to-bottom.
            (Still seems like Magic to me, but honestly haven't tried to
climb this mountain personally... partially due to my perception of Magic.)

    Code Testing
        Doctests
        Unittests
        Nose
        RobotTests

    The state of Python Web Development
        Top ISP's, Availability
        Underlying Technologies
            No longer mod_python, now mod_wsgi?
            What about mod_parrot - I know, a whole 'NOTHER kettle of fish!
;o)
        Basic-to-Advanced Frameworks
            web2py
            Django
        Solution for "a more PHP-like environment"
            My point: what combination/recipe would allow someone to migrate
relatively easily (apart from code re-writes) from PHP to a Py platform?


[3] I don't feel that _I_ am ready to _give_ any talk(s) this year, but hope
to be more-able-to next!


Cheers, all, and I know _I_ am looking forward to it!  :D



On Sat, Jul 16, 2011 at 7:29 AM, Greg Lindstrom <gslindstrom at gmail.com>wrote:

> We are starting to plan pyAR 2011 to be held on the campus of UCA this
> Fall.  We are looking at Saturday, October 22 to avoid any UCA home football
> games and the ACM competition on Nov 5.  If you are interested in helping
> organize the conference -- there is a lot to do and no experience is
> required -- please sign up on the pyar2-organizers mailing list. You can do
> a little or a lot; either will be appreciated.
>
> Traditionally, we set up classes (1 1/2 hour long) and talks (1 hour long)
> on various topics.  This year we plan to add a track for students to present
> papers on how they use Python.  This will give them an opportunity to put
> together a presentation and get in front of people.  What classes and/or
> topics do you want to see addressed this year?  Anything Python related will
> be considered (last year we had a complaint that there were no Perl classes!
> Go figure).  Possible topics include beginning Python, intermediate Python
> (what topics do you consider intermediate?), database, web, GUI, game
> programming, documentation (that's me...I love Sphinx!), whatever.  Please
> make a suggestion or two!
>
> I'll post again here when we confirm the date and get speakers set up.
> Again, if you want to help out, please join the organizers list.
>
> --greg
>
> _______________________________________________
> PyAR2 mailing list
> PyAR2 at python.org
> http://mail.python.org/mailman/listinfo/pyar2
>
>
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From brian.curtin at gmail.com  Tue Aug 16 00:51:02 2011
From: brian.curtin at gmail.com (Brian Curtin)
Date: Mon, 15 Aug 2011 17:51:02 -0500
Subject: [PyAR2] Looking for PyCon 2012 Speakers
Message-ID: <CAD+XWwp-2QJfuJOYiD_hho9g793ZFNU4Wzm+mxb1wGvUznAobA@mail.gmail.com>

With PyCon 2012 efforts off to a great start, we?re looking for you,
the people of the Python community, to show us what you?ve got. Our
call for proposals (http://us.pycon.org/2012/cfp/) just went out and
we want to include you in our 2012 conference schedule, taking place
March 7-15, 2012 in Santa Clara, CA.

The call covers tutorial, talk, and poster applications, and we?re
expecting to blow the previous record of 250 applications out of the
water. Put together your best 3-hour class proposals for one of the
tutorial sessions on March 7 and 8. Submit your best talks on any
range of topics for the conference days, March 9 through 11. The
poster session will be in full swing on Sunday with a series of 4'x4'
posters and an open floor for attendees to interact with presenters.
Get your applications in early - we want to help you put together the
best proposal possible, so we?re going to work with submitters as
applications come in.

See more details and submit your talks here: http://us.pycon.org/2012/speaker/

We?re also looking for feedback from your past PyCon experiences along
with what you?re looking for in the future, by way of our 2012
Guidance Survey at
https://www.surveymonkey.com/s/pycon2012_launch_survey. The attendees
make the conference, so every response we get from you makes a
difference in putting together the best conference we can.

If you or your company is interested in sponsoring PyCon, we?d love to
hear from you. Join our growing list with Diamond sponsors Google and
Dropbox, and Platinum sponsors Microsoft, Nasuni, SurveyMonkey, and
Gondor by Eldarion. CCP Games, Linode, Walt Disney Animation Studios,
Canonical, DotCloud, Loggly, Revolution Systems, ZeOmega, bitly,
ActiveState, JetBrains, Snoball, Caktus Consulting Group, and Disqus
make up our Gold sponsors. The Silver sponsors so far are 10gen,
GitHub, Olark, Wingware, net-ng, Imaginary Landscape, BigDoor, Fwix,
AG Interactive, Bitbucket, The Open Bastion, Accense Technology, Cox
Media Group, and myYearbook. See our sponsorship page at
http://us.pycon.org/2012/sponsors/ for more details.

The PyCon Organizers - http://us.pycon.org/2012
Jesse Noller - Chairman - jnoller at python.org
Brian Curtin - Publicity Coordinator - brian at python.org

From daniel at danielveazey.com  Sun Aug 21 16:04:34 2011
From: daniel at danielveazey.com (Daniel Veazey)
Date: Sun, 21 Aug 2011 09:04:34 -0500
Subject: [PyAR2] TypeError: 'int' object is not subscriptable
Message-ID: <CAML=PJwif6NX+85TuST-4KsmSsU=arNLxAEi9C-33+uoW12kqw@mail.gmail.com>

In my efforts to learn Python, I'm trying to write a program to solve a
Sudoku puzzle. Here is the code I have so far:

## define and populate the board by rows; 0 = unsolved position
row = [0, 1, 2, 3, 4, 5, 6, 7, 8]
row[0] = [5, 6, 0, 0, 4, 1, 0, 0, 8]
row[1] = [1, 0, 0, 0, 0, 9, 0, 7, 0]
row[2] = [0, 8, 0, 5, 0, 2, 3, 0, 0]
row[3] = [3, 0, 9, 0, 2, 0, 0, 5, 0]
row[4] = [0, 7, 0, 3, 0, 5, 0, 9, 0]
row[5] = [0, 5, 0, 0, 7, 0, 6, 0, 1]
row[6] = [0, 0, 2, 1, 0, 3, 0, 6, 0]
row[7] = [0, 3, 0, 2, 0, 0, 0, 0, 9]
row[8] = [6, 0, 0, 4, 5, 0, 0, 8, 3]

## define and populate the columns by referring to the rows
col = [0, 1, 2, 3, 4, 5, 6, 7, 8]
col[0] = [row[0[0]], row[1[0]], row[2[0]], row[3[0]], row[4[0]], row[5[0]],
row[6[0]], row[7[0]], row[8[0]]]
col[1] = [row[0[1]], row[1[1]], row[2[1]], row[3[1]], row[4[1]], row[5[1]],
row[6[1]], row[7[1]], row[8[1]]]
col[2] = [row[0[2]], row[1[2]], row[2[2]], row[3[2]], row[4[2]], row[5[2]],
row[6[2]], row[7[2]], row[8[2]]]
col[3] = [row[0[3]], row[1[3]], row[2[3]], row[3[3]], row[4[3]], row[5[3]],
row[6[3]], row[7[3]], row[8[3]]]
col[4] = [row[0[4]], row[1[4]], row[2[4]], row[3[4]], row[4[4]], row[5[4]],
row[6[4]], row[7[4]], row[8[4]]]
col[5] = [row[0[5]], row[1[5]], row[2[5]], row[3[5]], row[4[5]], row[5[5]],
row[6[5]], row[7[5]], row[8[5]]]
col[6] = [row[0[6]], row[1[6]], row[2[6]], row[3[6]], row[4[6]], row[5[6]],
row[6[6]], row[7[6]], row[8[6]]]
col[7] = [row[0[7]], row[1[7]], row[2[7]], row[3[7]], row[4[7]], row[5[7]],
row[6[7]], row[7[7]], row[8[7]]]
col[8] = [row[0[8]], row[1[8]], row[2[8]], row[3[8]], row[4[8]], row[5[8]],
row[6[8]], row[7[8]], row[8[8]]]

When I run the program, the first part of defining the rows runs fine, but
when I start to define the columns, I get this error:

Traceback (most recent call last):
  File "sudoku_solver_1.py", line 15, in <module>
    col[0] = [row[0[0]], row[1[0]], row[2[0]], row[3[0]], row[4[0]],
row[5[0]], row[6[0]], row[7[0]], row[8[0]]]
TypeError: 'int' object is not subscriptable

I'm not quite sure what I'm doing wrong here. I want to nest a list inside
the list col by referring to the nested lists in row. Any tips on why I'm
getting this error or what I should do to fix it?

Thanks,
Daniel
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From pyar2 at cowsgomoo.org  Sun Aug 21 19:20:15 2011
From: pyar2 at cowsgomoo.org (Coltrey Mather)
Date: Sun, 21 Aug 2011 12:20:15 -0500
Subject: [PyAR2] TypeError: 'int' object is not subscriptable
In-Reply-To: <CAML=PJwif6NX+85TuST-4KsmSsU=arNLxAEi9C-33+uoW12kqw@mail.gmail.com>
References: <CAML=PJwif6NX+85TuST-4KsmSsU=arNLxAEi9C-33+uoW12kqw@mail.gmail.com>
Message-ID: <CAE307+9-NcXMyZze=rir3QAp=y+xNC1heTLN1+2b0OsNoMzdMg@mail.gmail.com>

Like row[0][0] instead of like  row[0[0]] in all your stuff
On Aug 21, 2011 9:04 AM, "Daniel Veazey" <daniel at danielveazey.com> wrote:
> In my efforts to learn Python, I'm trying to write a program to solve a
> Sudoku puzzle. Here is the code I have so far:
>
> ## define and populate the board by rows; 0 = unsolved position
> row = [0, 1, 2, 3, 4, 5, 6, 7, 8]
> row[0] = [5, 6, 0, 0, 4, 1, 0, 0, 8]
> row[1] = [1, 0, 0, 0, 0, 9, 0, 7, 0]
> row[2] = [0, 8, 0, 5, 0, 2, 3, 0, 0]
> row[3] = [3, 0, 9, 0, 2, 0, 0, 5, 0]
> row[4] = [0, 7, 0, 3, 0, 5, 0, 9, 0]
> row[5] = [0, 5, 0, 0, 7, 0, 6, 0, 1]
> row[6] = [0, 0, 2, 1, 0, 3, 0, 6, 0]
> row[7] = [0, 3, 0, 2, 0, 0, 0, 0, 9]
> row[8] = [6, 0, 0, 4, 5, 0, 0, 8, 3]
>
> ## define and populate the columns by referring to the rows
> col = [0, 1, 2, 3, 4, 5, 6, 7, 8]
> col[0] = [row[0[0]], row[1[0]], row[2[0]], row[3[0]], row[4[0]],
row[5[0]],
> row[6[0]], row[7[0]], row[8[0]]]
> col[1] = [row[0[1]], row[1[1]], row[2[1]], row[3[1]], row[4[1]],
row[5[1]],
> row[6[1]], row[7[1]], row[8[1]]]
> col[2] = [row[0[2]], row[1[2]], row[2[2]], row[3[2]], row[4[2]],
row[5[2]],
> row[6[2]], row[7[2]], row[8[2]]]
> col[3] = [row[0[3]], row[1[3]], row[2[3]], row[3[3]], row[4[3]],
row[5[3]],
> row[6[3]], row[7[3]], row[8[3]]]
> col[4] = [row[0[4]], row[1[4]], row[2[4]], row[3[4]], row[4[4]],
row[5[4]],
> row[6[4]], row[7[4]], row[8[4]]]
> col[5] = [row[0[5]], row[1[5]], row[2[5]], row[3[5]], row[4[5]],
row[5[5]],
> row[6[5]], row[7[5]], row[8[5]]]
> col[6] = [row[0[6]], row[1[6]], row[2[6]], row[3[6]], row[4[6]],
row[5[6]],
> row[6[6]], row[7[6]], row[8[6]]]
> col[7] = [row[0[7]], row[1[7]], row[2[7]], row[3[7]], row[4[7]],
row[5[7]],
> row[6[7]], row[7[7]], row[8[7]]]
> col[8] = [row[0[8]], row[1[8]], row[2[8]], row[3[8]], row[4[8]],
row[5[8]],
> row[6[8]], row[7[8]], row[8[8]]]
>
> When I run the program, the first part of defining the rows runs fine, but
> when I start to define the columns, I get this error:
>
> Traceback (most recent call last):
> File "sudoku_solver_1.py", line 15, in <module>
> col[0] = [row[0[0]], row[1[0]], row[2[0]], row[3[0]], row[4[0]],
> row[5[0]], row[6[0]], row[7[0]], row[8[0]]]
> TypeError: 'int' object is not subscriptable
>
> I'm not quite sure what I'm doing wrong here. I want to nest a list inside
> the list col by referring to the nested lists in row. Any tips on why I'm
> getting this error or what I should do to fix it?
>
> Thanks,
> Daniel
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From dr.cburch at gmail.com  Sun Aug 21 20:54:14 2011
From: dr.cburch at gmail.com (Carl Burch)
Date: Sun, 21 Aug 2011 13:54:14 -0500
Subject: [PyAR2] TypeError: 'int' object is not subscriptable
In-Reply-To: <CAE307+9-NcXMyZze=rir3QAp=y+xNC1heTLN1+2b0OsNoMzdMg@mail.gmail.com>
References: <CAML=PJwif6NX+85TuST-4KsmSsU=arNLxAEi9C-33+uoW12kqw@mail.gmail.com>
	<CAE307+9-NcXMyZze=rir3QAp=y+xNC1heTLN1+2b0OsNoMzdMg@mail.gmail.com>
Message-ID: <53750EC0-A265-46AA-9433-1E577CC9456F@gmail.com>

Yes, you access an element with r[i][j], since after all a 2d array is just the same as a list of lists; r[i] is a single one of those lists, and you'd add [j] to extract an element from that list.

To go further beyond what you ask: It's also interesting how you can do the same thing with list comprehensions:

col[0] = [r[0] for r in row]

Here, r iterates through each row in the row array, and we build up an array of all the r[0]'s.

You could repeat this same line 8 more times, but I'd put it into a loop:

for i in range(9):
  col[i] = [r[i] for r in row]

Or we could even nest the comprehension into another comprehension:

col = [[r[i] for r in row] for i in range(9)]

Maybe somebody else has an even cleverer way to build up the translation of a 2d array.

-Carl

On Aug 21, 2011, at 12:20 PM, Coltrey Mather <pyar2 at cowsgomoo.org> wrote:

> Like row[0][0] instead of like  row[0[0]] in all your stuff
> 
> On Aug 21, 2011 9:04 AM, "Daniel Veazey" <daniel at danielveazey.com> wrote:
> > In my efforts to learn Python, I'm trying to write a program to solve a
> > Sudoku puzzle. Here is the code I have so far:
> > 
> > ## define and populate the board by rows; 0 = unsolved position
> > row = [0, 1, 2, 3, 4, 5, 6, 7, 8]
> > row[0] = [5, 6, 0, 0, 4, 1, 0, 0, 8]
> > row[1] = [1, 0, 0, 0, 0, 9, 0, 7, 0]
> > row[2] = [0, 8, 0, 5, 0, 2, 3, 0, 0]
> > row[3] = [3, 0, 9, 0, 2, 0, 0, 5, 0]
> > row[4] = [0, 7, 0, 3, 0, 5, 0, 9, 0]
> > row[5] = [0, 5, 0, 0, 7, 0, 6, 0, 1]
> > row[6] = [0, 0, 2, 1, 0, 3, 0, 6, 0]
> > row[7] = [0, 3, 0, 2, 0, 0, 0, 0, 9]
> > row[8] = [6, 0, 0, 4, 5, 0, 0, 8, 3]
> > 
> > ## define and populate the columns by referring to the rows
> > col = [0, 1, 2, 3, 4, 5, 6, 7, 8]
> > col[0] = [row[0[0]], row[1[0]], row[2[0]], row[3[0]], row[4[0]], row[5[0]],
> > row[6[0]], row[7[0]], row[8[0]]]
> > col[1] = [row[0[1]], row[1[1]], row[2[1]], row[3[1]], row[4[1]], row[5[1]],
> > row[6[1]], row[7[1]], row[8[1]]]
> > col[2] = [row[0[2]], row[1[2]], row[2[2]], row[3[2]], row[4[2]], row[5[2]],
> > row[6[2]], row[7[2]], row[8[2]]]
> > col[3] = [row[0[3]], row[1[3]], row[2[3]], row[3[3]], row[4[3]], row[5[3]],
> > row[6[3]], row[7[3]], row[8[3]]]
> > col[4] = [row[0[4]], row[1[4]], row[2[4]], row[3[4]], row[4[4]], row[5[4]],
> > row[6[4]], row[7[4]], row[8[4]]]
> > col[5] = [row[0[5]], row[1[5]], row[2[5]], row[3[5]], row[4[5]], row[5[5]],
> > row[6[5]], row[7[5]], row[8[5]]]
> > col[6] = [row[0[6]], row[1[6]], row[2[6]], row[3[6]], row[4[6]], row[5[6]],
> > row[6[6]], row[7[6]], row[8[6]]]
> > col[7] = [row[0[7]], row[1[7]], row[2[7]], row[3[7]], row[4[7]], row[5[7]],
> > row[6[7]], row[7[7]], row[8[7]]]
> > col[8] = [row[0[8]], row[1[8]], row[2[8]], row[3[8]], row[4[8]], row[5[8]],
> > row[6[8]], row[7[8]], row[8[8]]]
> > 
> > When I run the program, the first part of defining the rows runs fine, but
> > when I start to define the columns, I get this error:
> > 
> > Traceback (most recent call last):
> > File "sudoku_solver_1.py", line 15, in <module>
> > col[0] = [row[0[0]], row[1[0]], row[2[0]], row[3[0]], row[4[0]],
> > row[5[0]], row[6[0]], row[7[0]], row[8[0]]]
> > TypeError: 'int' object is not subscriptable
> > 
> > I'm not quite sure what I'm doing wrong here. I want to nest a list inside
> > the list col by referring to the nested lists in row. Any tips on why I'm
> > getting this error or what I should do to fix it?
> > 
> > Thanks,
> > Daniel
> _______________________________________________
> PyAR2 mailing list
> PyAR2 at python.org
> http://mail.python.org/mailman/listinfo/pyar2
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From rob at robnet.com  Mon Aug 22 16:34:21 2011
From: rob at robnet.com (Rob Nichols)
Date: Mon, 22 Aug 2011 09:34:21 -0500
Subject: [PyAR2] TypeError: 'int' object is not subscriptable
In-Reply-To: <53750EC0-A265-46AA-9433-1E577CC9456F@gmail.com>
References: <CAML=PJwif6NX+85TuST-4KsmSsU=arNLxAEi9C-33+uoW12kqw@mail.gmail.com>
	<CAE307+9-NcXMyZze=rir3QAp=y+xNC1heTLN1+2b0OsNoMzdMg@mail.gmail.com>
	<53750EC0-A265-46AA-9433-1E577CC9456F@gmail.com>
Message-ID: <53820F06-32ED-46C5-9152-1AC9094FA929@robnet.com>

This is a little off topic and you probably already have something similar, but this site has a bunch of puzzles that can be handy for testing your resulting program.  (At least, that's how I tested mine? :-)


On Aug 21, 2011, at 1:54 PM, Carl Burch wrote:

> Yes, you access an element with r[i][j], since after all a 2d array is just the same as a list of lists; r[i] is a single one of those lists, and you'd add [j] to extract an element from that list.
> 
> To go further beyond what you ask: It's also interesting how you can do the same thing with list comprehensions:
> 
> col[0] = [r[0] for r in row]
> 
> Here, r iterates through each row in the row array, and we build up an array of all the r[0]'s.
> 
> You could repeat this same line 8 more times, but I'd put it into a loop:
> 
> for i in range(9):
>   col[i] = [r[i] for r in row]
> 
> Or we could even nest the comprehension into another comprehension:
> 
> col = [[r[i] for r in row] for i in range(9)]
> 
> Maybe somebody else has an even cleverer way to build up the translation of a 2d array.
> 
> -Carl
> 
> On Aug 21, 2011, at 12:20 PM, Coltrey Mather <pyar2 at cowsgomoo.org> wrote:
> 
>> Like row[0][0] instead of like  row[0[0]] in all your stuff
>> 
>> On Aug 21, 2011 9:04 AM, "Daniel Veazey" <daniel at danielveazey.com> wrote:
>> > In my efforts to learn Python, I'm trying to write a program to solve a
>> > Sudoku puzzle. Here is the code I have so far:
>> > 
>> > ## define and populate the board by rows; 0 = unsolved position
>> > row = [0, 1, 2, 3, 4, 5, 6, 7, 8]
>> > row[0] = [5, 6, 0, 0, 4, 1, 0, 0, 8]
>> > row[1] = [1, 0, 0, 0, 0, 9, 0, 7, 0]
>> > row[2] = [0, 8, 0, 5, 0, 2, 3, 0, 0]
>> > row[3] = [3, 0, 9, 0, 2, 0, 0, 5, 0]
>> > row[4] = [0, 7, 0, 3, 0, 5, 0, 9, 0]
>> > row[5] = [0, 5, 0, 0, 7, 0, 6, 0, 1]
>> > row[6] = [0, 0, 2, 1, 0, 3, 0, 6, 0]
>> > row[7] = [0, 3, 0, 2, 0, 0, 0, 0, 9]
>> > row[8] = [6, 0, 0, 4, 5, 0, 0, 8, 3]
>> > 
>> > ## define and populate the columns by referring to the rows
>> > col = [0, 1, 2, 3, 4, 5, 6, 7, 8]
>> > col[0] = [row[0[0]], row[1[0]], row[2[0]], row[3[0]], row[4[0]], row[5[0]],
>> > row[6[0]], row[7[0]], row[8[0]]]
>> > col[1] = [row[0[1]], row[1[1]], row[2[1]], row[3[1]], row[4[1]], row[5[1]],
>> > row[6[1]], row[7[1]], row[8[1]]]
>> > col[2] = [row[0[2]], row[1[2]], row[2[2]], row[3[2]], row[4[2]], row[5[2]],
>> > row[6[2]], row[7[2]], row[8[2]]]
>> > col[3] = [row[0[3]], row[1[3]], row[2[3]], row[3[3]], row[4[3]], row[5[3]],
>> > row[6[3]], row[7[3]], row[8[3]]]
>> > col[4] = [row[0[4]], row[1[4]], row[2[4]], row[3[4]], row[4[4]], row[5[4]],
>> > row[6[4]], row[7[4]], row[8[4]]]
>> > col[5] = [row[0[5]], row[1[5]], row[2[5]], row[3[5]], row[4[5]], row[5[5]],
>> > row[6[5]], row[7[5]], row[8[5]]]
>> > col[6] = [row[0[6]], row[1[6]], row[2[6]], row[3[6]], row[4[6]], row[5[6]],
>> > row[6[6]], row[7[6]], row[8[6]]]
>> > col[7] = [row[0[7]], row[1[7]], row[2[7]], row[3[7]], row[4[7]], row[5[7]],
>> > row[6[7]], row[7[7]], row[8[7]]]
>> > col[8] = [row[0[8]], row[1[8]], row[2[8]], row[3[8]], row[4[8]], row[5[8]],
>> > row[6[8]], row[7[8]], row[8[8]]]
>> > 
>> > When I run the program, the first part of defining the rows runs fine, but
>> > when I start to define the columns, I get this error:
>> > 
>> > Traceback (most recent call last):
>> > File "sudoku_solver_1.py", line 15, in <module>
>> > col[0] = [row[0[0]], row[1[0]], row[2[0]], row[3[0]], row[4[0]],
>> > row[5[0]], row[6[0]], row[7[0]], row[8[0]]]
>> > TypeError: 'int' object is not subscriptable
>> > 
>> > I'm not quite sure what I'm doing wrong here. I want to nest a list inside
>> > the list col by referring to the nested lists in row. Any tips on why I'm
>> > getting this error or what I should do to fix it?
>> > 
>> > Thanks,
>> > Daniel
>> _______________________________________________
>> PyAR2 mailing list
>> PyAR2 at python.org
>> http://mail.python.org/mailman/listinfo/pyar2
> _______________________________________________
> PyAR2 mailing list
> PyAR2 at python.org
> http://mail.python.org/mailman/listinfo/pyar2

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From daniel at danielveazey.com  Mon Aug 22 22:43:39 2011
From: daniel at danielveazey.com (Daniel Veazey)
Date: Mon, 22 Aug 2011 15:43:39 -0500
Subject: [PyAR2] TypeError: 'int' object is not subscriptable
In-Reply-To: <53750EC0-A265-46AA-9433-1E577CC9456F@gmail.com>
References: <CAML=PJwif6NX+85TuST-4KsmSsU=arNLxAEi9C-33+uoW12kqw@mail.gmail.com>
	<CAE307+9-NcXMyZze=rir3QAp=y+xNC1heTLN1+2b0OsNoMzdMg@mail.gmail.com>
	<53750EC0-A265-46AA-9433-1E577CC9456F@gmail.com>
Message-ID: <CAML=PJxmfKkhA3whJFFJ5HDBZEsHxgFyDwU_6s9m9aQuH+n5WQ@mail.gmail.com>

Thanks for your comments and help. I have finished the first version of the
program, and here is a link to the code:

http://paste.ubuntu.com/672710/

It only uses the most basic of methods to solve puzzles, so even some
puzzles rated as "easy" still stump it. But it does what I set out for it to
do, and I'm proud of that. I plan to incorporate more advanced methods to
solve harder puzzles later. I learned a lot doing this. Thanks again for the
help. If you want to try it out, I'd appreciate any feedback.

Thanks,
Daniel

On Sun, Aug 21, 2011 at 1:54 PM, Carl Burch <dr.cburch at gmail.com> wrote:

> Yes, you access an element with r[i][j], since after all a 2d array is just
> the same as a list of lists; r[i] is a single one of those lists, and you'd
> add [j] to extract an element from that list.
>
> To go further beyond what you ask: It's also interesting how you can do the
> same thing with list comprehensions:
>
> col[0] = [r[0] for r in row]
>
> Here, r iterates through each row in the row array, and we build up an
> array of all the r[0]'s.
>
> You could repeat this same line 8 more times, but I'd put it into a loop:
>
> for i in range(9):
>   col[i] = [r[i] for r in row]
>
> Or we could even nest the comprehension into another comprehension:
>
> col = [[r[i] for r in row] for i in range(9)]
>
> Maybe somebody else has an even cleverer way to build up the translation of
> a 2d array.
>
> -Carl
>
> On Aug 21, 2011, at 12:20 PM, Coltrey Mather <pyar2 at cowsgomoo.org> wrote:
>
> Like row[0][0] instead of like  row[0[0]] in all your stuff
> On Aug 21, 2011 9:04 AM, "Daniel Veazey" < <daniel at danielveazey.com>
> daniel at danielveazey.com> wrote:
> > In my efforts to learn Python, I'm trying to write a program to solve a
> > Sudoku puzzle. Here is the code I have so far:
> >
> > ## define and populate the board by rows; 0 = unsolved position
> > row = [0, 1, 2, 3, 4, 5, 6, 7, 8]
> > row[0] = [5, 6, 0, 0, 4, 1, 0, 0, 8]
> > row[1] = [1, 0, 0, 0, 0, 9, 0, 7, 0]
> > row[2] = [0, 8, 0, 5, 0, 2, 3, 0, 0]
> > row[3] = [3, 0, 9, 0, 2, 0, 0, 5, 0]
> > row[4] = [0, 7, 0, 3, 0, 5, 0, 9, 0]
> > row[5] = [0, 5, 0, 0, 7, 0, 6, 0, 1]
> > row[6] = [0, 0, 2, 1, 0, 3, 0, 6, 0]
> > row[7] = [0, 3, 0, 2, 0, 0, 0, 0, 9]
> > row[8] = [6, 0, 0, 4, 5, 0, 0, 8, 3]
> >
> > ## define and populate the columns by referring to the rows
> > col = [0, 1, 2, 3, 4, 5, 6, 7, 8]
> > col[0] = [row[0[0]], row[1[0]], row[2[0]], row[3[0]], row[4[0]],
> row[5[0]],
> > row[6[0]], row[7[0]], row[8[0]]]
> > col[1] = [row[0[1]], row[1[1]], row[2[1]], row[3[1]], row[4[1]],
> row[5[1]],
> > row[6[1]], row[7[1]], row[8[1]]]
> > col[2] = [row[0[2]], row[1[2]], row[2[2]], row[3[2]], row[4[2]],
> row[5[2]],
> > row[6[2]], row[7[2]], row[8[2]]]
> > col[3] = [row[0[3]], row[1[3]], row[2[3]], row[3[3]], row[4[3]],
> row[5[3]],
> > row[6[3]], row[7[3]], row[8[3]]]
> > col[4] = [row[0[4]], row[1[4]], row[2[4]], row[3[4]], row[4[4]],
> row[5[4]],
> > row[6[4]], row[7[4]], row[8[4]]]
> > col[5] = [row[0[5]], row[1[5]], row[2[5]], row[3[5]], row[4[5]],
> row[5[5]],
> > row[6[5]], row[7[5]], row[8[5]]]
> > col[6] = [row[0[6]], row[1[6]], row[2[6]], row[3[6]], row[4[6]],
> row[5[6]],
> > row[6[6]], row[7[6]], row[8[6]]]
> > col[7] = [row[0[7]], row[1[7]], row[2[7]], row[3[7]], row[4[7]],
> row[5[7]],
> > row[6[7]], row[7[7]], row[8[7]]]
> > col[8] = [row[0[8]], row[1[8]], row[2[8]], row[3[8]], row[4[8]],
> row[5[8]],
> > row[6[8]], row[7[8]], row[8[8]]]
> >
> > When I run the program, the first part of defining the rows runs fine,
> but
> > when I start to define the columns, I get this error:
> >
> > Traceback (most recent call last):
> > File "sudoku_solver_1.py", line 15, in <module>
> > col[0] = [row[0[0]], row[1[0]], row[2[0]], row[3[0]], row[4[0]],
> > row[5[0]], row[6[0]], row[7[0]], row[8[0]]]
> > TypeError: 'int' object is not subscriptable
> >
> > I'm not quite sure what I'm doing wrong here. I want to nest a list
> inside
> > the list col by referring to the nested lists in row. Any tips on why I'm
> > getting this error or what I should do to fix it?
> >
> > Thanks,
> > Daniel
>
> _______________________________________________
> PyAR2 mailing list
> PyAR2 at python.org
> http://mail.python.org/mailman/listinfo/pyar2
>
>
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From gslindstrom at gmail.com  Sat Aug 27 15:15:46 2011
From: gslindstrom at gmail.com (Greg Lindstrom)
Date: Sat, 27 Aug 2011 08:15:46 -0500
Subject: [PyAR2] pyArkasas 2011 - Call For Papers
Message-ID: <CAF8U9yz9mteuJE8wCx=H-GVmM7CbYLc9k_DGuo9Ygu+bwsu-Ng@mail.gmail.com>

Plans for pyArkansas 2011 are underway.  The 4th annual Python conference
will be held October 22 on the campus of UCA (Computer Science Department)
and this year we would like *you* to present a talk on what you are doing
with Python.

Talks are 50 minutes (40 minutes of you talking and then 10-minutes for
questions) and can be on anything Python.  Are you using a standard library
module that's really cool?  Perhaps a third party package that you think
other people should know about?  What about that killer project where you
did something interesting or fun using Python?  This is a chance for you to
share your knowledge with an audience that wants to hear what you have to
say!  Don't think you have to be a "Python Heavyweight" to present; if you
are doing something interesting, we want to hear from you (and we're
bringing in a couple of heavyweights to give tutorials and talks of their
own).  We want a wide selection of topics and skill levels for the
conference.

Do you have a paper you would like to present?  This year, we have a special
track for students (High School and College/University) to present academic
papers (25-minute slots).  How cool is that?

Without talks, there is no pyArkansas.  You don't want that, do you?

If you are interested, please email the following information to
pyar2-organizers at python.org (don't "reply" to this).

   - Talk Title
   - A brief (a paragraph or two) description of your talk
   - Intended audience (beginner, intermediate, advanced, web developer,
   gamer, astronomer, etc.)
   - A brief blurb about you (that we can put on the website)
   - Length (papers are 25-minutes, talks are 50-minutes.  There are a few
   longer talks slots available if you feel you need a little more time)

We'll look them all over and make the selections by October 1 to give you
time to prepare.

We're looking forward to seeing you speak this year!
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