[Tutor] Installation problem: Python 2.6.6 (32-Bit) on Windows 7 (32-Bit)

Has anyone else had problems running the msi for Python 2.6.6 on Windows 7? If I don't check "Compile .py to byte code", the installer completes without error. Checking "Compile .py to byte code" causes the following to be displayed "There is a problem with the windows installer package. A progra

[Tutor] When max() doesn't work as expected

I have a list of 2300 strings. When I call max() on the list, it returned an item with 37 characters. I am only passing 1 argument to max(). I know for a fact that the largest item has 57 characters, and when I called mylist.index('my_57_character_string') the index was found. Printing len(mylist

[Tutor] String formatting hex numbers

I was looking at a this code which uses this code to dsiplay some hex numbers sys.stdout.write( "\r%-8s ... 0x%08X->0x%08X " % ( descr, long(startAddr), long(endAddr) ) The hex values are in this range 0x1BFFF400 to 1BFFF000 Why are these displayed with a leading negative sign (between the 0x a

[Tutor] Determining periodicity of rand.randint()

Has anyone ever measured how random (or deterministic) a given sequence of numbers generated by rand.randint() are? Using these arguments for rand.randint(0, 1000 ) if a program which calls rand.randint() runs for 10 hours (or a few days), will it keep generating a repeatable set of numbers at

Re: [Tutor] Using the curses module (or a better solution)

> See the recent discussion of urwid for discussion of a similar problem. > http://thread.gmane.org/gmane.comp.python.tutor/50500/ This looks interesting. Thanks! ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor

[Tutor] Using the curses module (or a better solution)

I'm maintaining a framework of tests which are run on a diskless Linux client, in character mode (no graphical desktop). The tests often print out a lot of info, which scrolls off the screen. I'd like to add a 1-2 line no-scroll-area at the top of the screen, so as to print a message which indica

[Tutor] cmd module

I was just reading the PYMOTW article on the cmd module, and trying the examples. http://www.doughellmann.com/PyMOTW/cmd/cmd.html Scroll down to Auto-Completion. Does the tab key work for anyone running Windows ? Is this an OS specific feature? I see the bash prompts in the article, tab does so

[Tutor] using sys.excepthook to handle unhandled exception (corrected and reposted)

I'm maintaining a large framework of python code where the original authors left many assert statements. When an unhandled exception occurs, the traceback is displayed on the screen. Ideally, I don't want the users to see the tracebacks from unhandled exceptions, but rather a short, useful message

[Tutor] using sys.excepthook to handled unhandled exceptions

The original authors left asserts in many places and I don't want the people using the code to see the ugly tracebacks. want to add an unhandled exception handler to a large framework that I'm maintaining, to make the applications behave better, Users of a program shouldn't need to know anything

Re: [Tutor] Tutor Digest, Vol 53, Issue 18

Message: 7 Date: Sat, 05 Jul 2008 12:23:36 -0600 From: Nathan Farrar <[EMAIL PROTECTED]> Subject: [Tutor] Exploring the Standard Library To: Python Tutor Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; charset="us-ascii" >>I'd like to spend some time exploring the standard library. This

Re: [Tutor] Wave module

Message: 1 Date: Sat, 5 Jul 2008 16:50:35 -0600 From: "Alex Krycek" <[EMAIL PROTECTED]> Subject: [Tutor] Wave module To: tutor@python.org Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; charset="iso-8859-1" Hello, I'm trying to join two .wav files with the wave module. But when I

Re: [Tutor] Is "var = None" in Python equivalent to "Set var

This thread got a bit off track > >>but in Python these statements are unnecessary. > > What happened to "Explicit is better than implicit"? > Regarding the "original poster" contrasting VB with Python setting someObject = None is perfectly fine in Python, and a good analogy between the langu

Re: [Tutor] Is "var = None" in Python equivalent to "Set var

Message: 5 Date: Mon, 30 Jun 2008 11:49:59 +0200 From: "Andre Engels" <[EMAIL PROTECTED]> Subject: Re: [Tutor] Is "var = None" in Python equivalent to "Set var = Nothing"in VB? To: Kelie <[EMAIL PROTECTED]> Cc: tutor@python.org Message-ID: <[EMAIL PROTECTED]> Content-Type: text

Re: [Tutor] Is "var = None" in Python equivalent to "Set var

Wes, is this not your reply? "the reason why i ask is because it's not standard practice i see people doing this with Python, so i'm trying to get a better understanding of what you're trying to do. thanks! -- wesley" > *exactly* why, other than most of the time, people let objects go > out-of

Re: [Tutor] Is "var = None" in Python equivalent to "Set var

Message: 9 Date: Sun, 29 Jun 2008 01:20:16 -0700 From: "wesley chun" <[EMAIL PROTECTED]> Subject: Re: [Tutor] Is "var = None" in Python equivalent to "Set var = Nothing"in VB? To: [EMAIL PROTECTED], "Alan Gauld" <[EMAIL PROTECTED]> Cc: tutor@python.org >>the reason why i ask is becau

Re: [Tutor] Grabbing data from changing website

-- > > Message: 4 > Date: Wed, 4 Jun 2008 10:00:46 -0400 > From: James <[EMAIL PROTECTED]> > Subject: [Tutor] Grabbing data from changing website > To: tutor@python.org > Message-ID: ><[EMAIL PROTECTED]> > Content-Type: text/plain; charset=ISO-8859-1 > > > >>urll

[Tutor] Python Programming for the Absolute Beginner-OT

A bit OT, but still within the realm of beginning Python... My co-worker whom has just started learning Python, bought this book in used condition. http://www.courseptr.com/ptr_detail.cfm?group=Programming&subcat=Other&isbn=978%2D1%2D59863%2D112%2D8 Unfortunately it came without the CD, and the p

Re: [Tutor] Tutor Open a directory in the default file manager

*Tim Michelsen* timmichelsen at gmx-topmail.de *Mon May 19 21:36:30 CEST 2008* - Previous message: [Tutor] Open a directory in the default file manager - Next message: [Tutor] Getting started with Python

[Tutor] Re Open a directory in the default file manager

Message: 2 Date: Thu, 15 May 2008 20:10:05 +0200 From: Tim Michelsen <[EMAIL PROTECTED]> Subject: [Tutor] Open a directory in the default file manager To: tutor@python.org Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; charset=ISO-8859-15; format=flowed Hello, >>is there any function/mo

Re: [Tutor] Memory Leak?

Message: 5 Date: Wed, 7 May 2008 16:18:23 -0400 From: "Michael Langford" <[EMAIL PROTECTED]> Subject: Re: [Tutor] Memory Leak? To: "Keith Suda-Cederquist" <[EMAIL PROTECTED]> Cc: Python Tutor List Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; charset="iso-8859-1" >>You can alw

Re: [Tutor] Tutor Digest, Vol 50, Issue 84

I think you may have to send a message to the event look of you application manually, to let it know you have a key event for it. You may also need to temporarily enable/disbale the keydown event handler for pyHook, or else you wont be able to easily break out of that code (at least I couldn't) :-

Re: [Tutor] Copy script

>>Of course they do - they can use input redirection just like Unix. Oh,-I have forgotten about that. But why use clunky batch language when you can use Python? After all, he did post this to the python list. ___ Tutor maillist - Tutor@python.org http:/

Re: [Tutor] Copy script

Message: 7 Date: Thu, 10 Apr 2008 01:46:49 +0100 From: "Alan Gauld" <[EMAIL PROTECTED]> Subject: Re: [Tutor] Copy script To: tutor@python.org Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original >>I don;t see how the input file r

Re: [Tutor] Don't miss "Python-by-example - new online guide to

Date: Fri, 04 Apr 2008 07:12:11 -0700 From: Dick Moores <[EMAIL PROTECTED]> Subject: [Tutor] Don't miss "Python-by-example - new online guide to Python Standard Library" To: Python Tutor List Message-ID: <[EMAIL PROTECTED]> Dick- there was no url with your message. Also See Python Module

Re: [Tutor] Tutor Digest, Vol 49, Issue 78

>>Draft notes for the next Kent's Korner presentation are available at >>http://personalpages.tds.net/~kent37/kk/00010.html >>Comments welcome. I vote Kent move out of the korner and into the front of the classroom! Nice color scheme, easy to look at, good layout, font, size, and small chunks (pa

Re: [Tutor] Python to C++

h Python. > > Andreas > > > Am Montag, den 24.03.2008, 23:39 -0700 schrieb Tony Cappellini: > > > > Another alternative is Weave > > http://www.scipy.org/Weave > > > > But mixing C/C++ with Python sort of defeats the reasons for using > > Pytho

Re: [Tutor] Python to C++

Another alternative is Weave http://www.scipy.org/Weave But mixing C/C++ with Python sort of defeats the reasons for using Python to begin with Message: 2 Date: Sat, 22 Mar 2008 02:44:54 +0100 From: Eike Welk <[EMAIL PROTECTED]> Subject: Re: [Tutor] Python to C++ To: tutor@python.org Message-ID:

Re: [Tutor] what is @classmethod and @staticmethod ??

> I don't use classmethods so I can't discuss that. For staticmethods, > suppose I have in foo.py Where is the word "staticmethod" in the example below? Where is it used? This is what I was hoping to see. > > class Foo(object): ># Lots of useful stuff > > > In client.py I have > > from f

Re: [Tutor] what is @classmethod and @staticmethod ??

Kent Would you show the examples which show where staticmethod & classmethod are used? I've often wondered about the usefulness of these myself. Having read many of the popular books on python, none provide a good clear explanation of why or where these should be used, and what the alternatives a

Re: [Tutor] Make sound with python? Cross platform?

> Thanks very much. Not quite sure why I didn't find those earlier! I'll > have a look now. I think this cuts more to the chase than using a game framework http://pysonic.sourceforge.net/ ___ Tutor maillist - Tutor@python.org http://mail.python.org/m

Re: [Tutor] How to deal with a thread that doesn't terminate

-1 > >--michael > > > On Feb 19, 2008 4:53 PM, Tony Cappellini <[EMAIL PROTECTED]> wrote: > > When I executing a program external to the main program in a thread, > > and that thread hangs, can the thread be terminated? > > How does one handle thi

Re: [Tutor] How to deal with a thread that doesn't terminate

On Feb 19, 2008 2:02 PM, bob gailer <[EMAIL PROTECTED]> wrote: > Tony Cappellini wrote: > > When I executing a program external to the main program in a thread, > > and that thread hangs, can the thread be terminated? > > > Please define "hangs". > A

[Tutor] How to deal with a thread that doesn't terminate

When I executing a program external to the main program in a thread, and that thread hangs, can the thread be terminated? How does one handle this situation? ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor

Re: [Tutor] Hello and newbie question about "self"

>>http://www.ibiblio.org/swaroopch/byteofpython/read/self.html Is there a typo in the contents of this web page? Should this statement Note for C++/Java/C# Programmers The self in Python is equivalent to the "self" pointer in C++ and the this reference in Java and C#. Actually be Note for C++

Re: [Tutor] shutils.copytree

> The source for copytree says, "The destination directory must not > already exist." I suppose that is why you have a problem but I don't > know the specific cause. Did you get a traceback? > > The source also says, "Consider this example code rather than the > ultimate tool" so maybe you should j

[Tutor] shutils.copytree

I'm using shutils for the first time, and I've un into a problem. The docs for copytree are pretty sparse and don't mention any problem situations Under WinXP, I'm trying to copy a directory tree to a USB device using copytree, but copytree doesn't like a drive letter as a destination. copytree('

Re: [Tutor] Tutor Digest, Vol 47, Issue 8

h the particular toolkit by the programmer. On Jan 3, 2008 1:00 PM, Marc Tompkins <[EMAIL PROTECTED]> wrote: > On Jan 3, 2008 10:31 AM, Tony Cappellini <[EMAIL PROTECTED]> wrote: > It's like OCR and speech-to-text. At some point it becomes easier to do it > by hand t

Re: [Tutor] Tutor Digest, Vol 47, Issue 8

Message: 1 Date: Thu, 3 Jan 2008 10:06:01 -0200 From: Tiago Saboga <[EMAIL PROTECTED]> Subject: Re: [Tutor] Choice of GUI builders To: tutor@python.org Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; charset=us-ascii >>But since 2005, according to wikipedia, the Qt Windows is also >>lice

Re: [Tutor] Choice of GUI builders

Message: 1 Date: Thu, 3 Jan 2008 08:11:05 - From: "Alan Gauld" <[EMAIL PROTECTED]> Subject: Re: [Tutor] Choice of GUI builders To: tutor@python.org Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original >>OK, wxPython is a fin

Re: [Tutor] Tutor Digest, Vol 45, Issue 58

- Forwarded Message From: Doug Glenn <[EMAIL PROTECTED]> To: Alan Gauld <[EMAIL PROTECTED]> Sent: Tuesday, 20 November, 2007 4:08:12 AM Subject: Re: [Tutor] Wrong version of Python being executed >>It is a bit odd since normally Pythons installation mechinism only >>does it for the PY fil

Re: [Tutor] Wrong version of Python being executed

version of Python is invoked. How do other people deal with having multiple versions of Python on their system, and not run into this issue?? On Nov 10, 2007 6:16 PM, Kent Johnson <[EMAIL PROTECTED]> wrote: > > Tony Cappellini wrote: > > When I run this python script, the f

Re: [Tutor] Wrong version of Python being executed

Date: Mon, 12 Nov 2007 09:14:05 - From: "Alan Gauld" <[EMAIL PROTECTED]> Subject: Re: [Tutor] Wrong version of Python being executed To: tutor@python.org Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original >>Umm, have you

Re: [Tutor] Wrong version of Python being executed

Message: 2 Date: Sun, 11 Nov 2007 16:57:01 -0600 From: Martin Walsh <[EMAIL PROTECTED]> Subject: Re: [Tutor] Wrong version of Python being executed To: Tutor Python Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; charset=ISO-8859-1 >>My initial thought based on your description was tha

Re: [Tutor] Tutor Digest, Vol 45, Issue 30

> Message: 4 > Date: Mon, 12 Nov 2007 00:16:35 - > From: "Alan Gauld" <[EMAIL PROTECTED]> > Subject: Re: [Tutor] Wrong version of Python being executed > To: tutor@python.org > Message-ID: <[EMAIL PROTECTED]> > Content-Type: text/plain; format=flowed; charset="iso-8859-1"; > reply-type=

Re: [Tutor] Wrong version of Python being executed

Martin Walsh mwalsh at groktech.org Sun Nov 11 06:13:10 CET 2007 >>That is odd. >>Try using the full path to python, just to be sure: c:\python25\python >>script.py -- do you get the same behavior? This works just fine- I would expect it to. >>Also, if you haven't already, you can run python wit

Re: [Tutor] Wrong version of Python being executed

>>What do you get if you print sys.path from > the interpreter? I've printed out sys.path from inside the script as well, and all references to Python25 are replaced with Python23 FWIW- This isn't a problem unique to this script. I've just printed out sys.path from another script in another dire

Re: [Tutor] Wrong version of Python being executed

Thanks for replying Kent. This is quite a strange mystery. > A couple of possibilities... > Is there a #! line at the start of the script that specifies Python 2.3 > (I'm not sure if those work in windows though...) No- The shebang line is for non-Windows systems (Unix variants) > How do you run

[Tutor] Wrong version of Python being executed

I've got Python 2.3, 2.4 and 2.5 installed on a Windows XP machine.. I currently have Python 2.5 in my path, and there are no other versions of Python in the path. I'm trying to run a program which expects Python 2.4 or later to be installed, because there is a call to logging.BasicConfig(arg1, a

Re: [Tutor] os.rename anomaly in Python 2.3 on Windows XP

Thanks. Unfortunately,os.listdir() returns the same string as glob.glob, for the problem file I mentioned. When I pass that string to os.rename() OSError: [Errno 22] Invalid argument > Sounds like it has something to do with Unicode. > Your filenames aren't being interpreted correctly. Perhaps

[Tutor] os.rename anomaly in Python 2.3 on Windows XP

Using Windows XP, SP2 and Python 2.3 I've written a script which walks through a bunch of directories and replaces characters which are typically illegals as filenames, with an '_' character. The directories are part of a package of software which is released by a group of people from Japan, and

Re: [Tutor] Tutor Digest, Vol 40, Issue 55

Take a look at pyHook >1. Re: Catch event's on my computer (Alan Gauld) > From: "Alan Gauld" <[EMAIL PROTECTED]> > Subject: Re: [Tutor] Catch event's on my computer > To: tutor@python.org > Message-ID: <[EMAIL PROTECTED]> > Content-Type: text/plain; format=flowed; charset="iso-8859-1"; >

Re: [Tutor] HTTP file download

How do you handle a binary file? Message: 4 Date: Tue, 13 Mar 2007 13:23:44 +0100 From: "Jean-Philippe Durand" <[EMAIL PROTECTED]> Subject: Re: [Tutor] HTTP file download To: "[EMAIL PROTECTED]" <[EMAIL PROTECTED]> Cc: tutor@python.org Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plai

Re: [Tutor] Tutor Digest, Vol 37, Issue 15

Rename your file from .py to .pyw. This will prevent the DOS window from appearing Message: 6 Date: Mon, 5 Mar 2007 16:51:42 +0100 From: learner404 <[EMAIL PROTECTED]> Subject: [Tutor] Hiding/Killing a DOS window (from a previous os.system call) To: "Tutor Python" Message-ID: <[EMAI

Re: [Tutor] How does this work?

Thanks. I'm not using wx, but that doesn't matter. I'll see if there's some way I can get the author to let me pass in the logging handler to his main. On 2/7/07, Kent Johnson <[EMAIL PROTECTED]> wrote: > Kent Johnson wrote: > > You should be able to make the logging module work with you, it is ve

Re: [Tutor] How does this work?

> You should be able to make the logging module work with you, it is very > flexible. You should hook into the logging module. Write a custom > handler that pushes log methods into your GUI. Add the handler to the > root logger. The cmd line app already uses the logging module- this is where the p

Re: [Tutor] How does this work?

> The application needs to be rewritten if this is true. The author's > implementation is not logical, regardless- I won't ask him to do this, it's just the way it is. I don't know why it was written this way. > if I'm inferring correctly that he knows there are other apps depending > on this. Ye

Re: [Tutor] How does this work?

> If I understand you, you have a python cmdline app that does something > useful. You have users who aren't comfortable with the command line, so > you are writing a GUI wrapper that calls the cmdline app with popen(). That is correct > A better approach is to turn the functional part of the cmdl

Re: [Tutor] How does this work?

> > PS To import a file whose name is in a variable (string), see __import__(). I've started doing the import instead of exec/eval , but the person who wrote the module being called, started using the logging module. Now I can't capture the output of the module I'm calling, and display it in a GUI

Re: [Tutor] How does this work?

Hi Danny, > > > Hi Tony, > > Ack! > > This is not safe. I would strongly recommend not to do this. There is a > much simpler way for the caller to be written: What is not safe about doing it this way ? > > import tester > tester.main([], "argument") > #

[Tutor] How does this work?

I saw a snippet of python which is used to execute another python script, and I'm trying to understand the mechanism. Simple as it is, I don't understand how it works :-) this is the caller ## callee=open("tester.py").read() exec(callee) eval("main(['', 'argument'])")

Re: [Tutor] Purging/deleting the logfile with the logging module

*close*( ) > > Tidy up any resources used by the handler. This version does nothing > and is intended to be implemented by subclasses. > > How can I purge/delete & reopen the logfile? >>FileHandler has a close() method that presumably does something useful. see above- It says i

[Tutor] Purging/deleting the logfile with the logging module

I want to purge (empty) or delete the logfile created by the logging module, and reopen it for a new session. There is reference to a close function in the 2.3 docs, but I don't see how I can purge or delete the file, since I don't have access to the file descriptor. *close*( ) Tidy up any resour

Re: [Tutor] reassigning/replacing sys.stdout

That would be ideal- but I'm using 2.4 now, and the people using the app would also have to upgrade to 2.5. I don't like upgrading unless there's a pressing need. On 1/30/07, Danny Yoo <[EMAIL PROTECTED]> wrote: > The author of the cmd line app suggested I temporarily replace > sys.stdout'with

Re: [Tutor] reassigning/replacing sys.stdout

got it -thanks On 1/30/07, Luke Paireepinart <[EMAIL PROTECTED]> wrote: Tony Cappellini wrote: > > I'm writing a python gui app that will call a python cmd line app. The > gui will take users input, pass it to the cmd line app, then display > the cmd app program outp

[Tutor] reassigning/replacing sys.stdout

I'm writing a python gui app that will call a python cmd line app. The gui will take users input, pass it to the cmd line app, then display the cmd app program output. The idea is to give users who aren't comfortable with the cmd line a way to run the program, without having to open a shell window

[Tutor] Are there any MAC OSX python users here?

I'm trying to help some people run a python cmd line program on OSX. Would you email me off list if you have OSX and run python apps form the cmd line? thanks ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor

Re: [Tutor] Tutor Digest, Vol 35, Issue 18

Message: 7 Date: Fri, 5 Jan 2007 08:04:23 -0800 (PST) From: Mike Ellis <[EMAIL PROTECTED]> Subject: [Tutor] Python gui for file input To: tutor@python.org Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; charset="iso-8859-1" Hi all, I am looking to create a simple gui interface to a sma

[Tutor] Assigning a variable stored in a dictionary

I can't see the forest through the trees. I have stored 3 global variables in a dictionary, and associated each variable with a filename. Ideally, I want to read the contents of the text files, and store the contents in the global variables. The globals will be used by another function. However,

Re: [Tutor] Embedding strings in a python script

Message: 5 Date: Thu, 4 Jan 2007 16:13:51 +1300 From: "John Fouhy" <[EMAIL PROTECTED]> Subject: Re: [Tutor] Embedding strings in a python script To: tutor-python Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; charset=ISO-8859-1; format=flowed On 04/

[Tutor] Embedding strings in a python script

I have a number of text files which need to be checked into CVS. Each file needs a special text header/footer in order that CVS can track changes and version numbers. Python to the rescue. I've written a small python program which will write the header/footer to all files in the current director

Re: [Tutor] Tutor Digest, Vol 35, Issue 8

Take a look at Movable Python. It may not be exactly what you're looking for, but it may turn out to be a resource to leverage from. Message: 1 Date: Tue, 2 Jan 2007 21:14:16 -0500 From: "Daniel McQuay" <[EMAIL PROTECTED]> Subject: Re: [Tutor] Starting python from a DOS prompt from any dire

Re: [Tutor] Starting python from a DOS prompt from any

Message: 3 Date: Sun, 31 Dec 2006 00:10:39 -0500 From: "Daniel McQuay" <[EMAIL PROTECTED]> Subject: [Tutor] Starting python from a DOS prompt from any directory? sorry for such a newbie question but i would like to figure this out because there are some situations where i need that to wo

Re: [Tutor] Tutor Digest, Vol 34, Issue 55

Message: 1 Date: Thu, 28 Dec 2006 17:24:41 -0800 From: "Chris Hengge" <[EMAIL PROTECTED]> Subject: Re: [Tutor] OT: Python 2.5 (Was Re: Length of longest item in I hope this is related enough for this thread, but I'm curious why people didn't seem to unanimously jump into 2.5 upon release. One

Re: [Tutor] Length of longest item in a list, using a list comp

Thanks, but I am restricted to using 2.3.4 for now, so longest = max([len(x) for x in ll]) works for me On 12/28/06, Andreas Kostyrka <[EMAIL PROTECTED]> wrote: * Python <[EMAIL PROTECTED]> [061228 20:44]: > On Thu, 2006-12-28 at 11:27 -0800, Tony Cappellini wrote: > >

[Tutor] Length of longest item in a list, using a list comp

I want to use a list comp to get the length of the longest string in a list, but can't quite get the syntax right. l1=['abc', 'abcde', 'abcfdtea'] longest=0 [x for x in l1 if len(x) > longest] The problem is I can't add the true clause to the if statement in a list comp as in if len(x) > longes

[Tutor] Docs for os popen and Popen2 modules

Running python 2.3.4, on Windows XP the popen2 docs show 6.8 popen2 -- Subprocesses with accessible I/O streams This module allows you to spawn processes and connect to their input/output/error pipes and >>obtain their return codes under Unix and Windows.<< Then it further goes to say The onl

[Tutor] How To structure a program for cmd line mode & gui mode

I"m writing a cmd line program which will automate getting some modules out of cvs, based on some input criteria. Initiallly, I will do a cmd line version, but would like to make a gui version later with QT. I would like to find out how to structure the program so that when the gui version is fi

[Tutor] e: moving from pack to grid in tkinter

Date: Mon, 27 Nov 2006 18:07:33 +1300 From: "John Fouhy" <[EMAIL PROTECTED]> Subject: Re: [Tutor] moving from pack to grid in tkinter To: tutor-python Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; charset=ISO-8859-1; format=flowed On 27/11/06, Tony Cappel

[Tutor] moving from pack to grid in tkinter

I've got a main window which is 640 * 400. self.root.geometry("600x400") self.label.pack(side=BOTTOM, fill=X) This line would put the label at the bottom of the window, and extend to both left and right edges of the window. I want to change to grid geometry because I have several more widge

[Tutor] using CVS through Python

I need to do some automated checkouts of CVS projects from Python scripts, and want ot be able to handle success and failure conditions.While sending the command lines to cvs isn't a problem, I could use some suggestions for how to check the cvs responses. Parsing the text returned from CVS isn't 

Re: [Tutor] Print Screen

Date: Thu, 02 Nov 2006 20:09:59 -0500From: Bill Burns <[EMAIL PROTECTED]>Subject: Re: [Tutor] Print Screen To: Chris Hengge <[EMAIL PROTECTED]>Cc: pythontutor < tutor@python.org>Message-ID: <[EMAIL PROTECTED]>Content-Type: text/plain; charset=ISO-8859-1; format=flowed >>pressed, try pyHook. Note: p

Re: [Tutor] Running multiple version of Python on 1 windows

>From Kent >>You don't say what OS you are running but under Windows it is trivial to>>have multiple versions of Python installed, I have 2.3, 2.4 and 2.5.>>They are each in their own directories, all in the system path. I have >>aliases called py23, py24 and py25 that let me launch the version I>>

Re: [Tutor] what is PIL..???

Also checkout GnuPlot http://www.gnuplot.info/and the Python bindings for ithttp://gnuplot-py.sourceforge.net/ Date: Sat, 21 Oct 2006 14:07:12 +0100From: "Asrarahmed Kadri" <[EMAIL PROTECTED]> Subject: [Tutor] what is PIL..???To: pythontutor Message-ID:        < [EMAIL PROTECTED]>

[Tutor] Trying to understand sys.getrefcount()

I'm using Python 2.3.4After reading this in the docs getrefcount( object) Return the reference count of the object. The count returned is generally one higher than you might expect, because it includes the (temporary) reference as an argument to getrefcount().I decided to try some experiments c

[Tutor] What not to put in __init__()

I've just inherited a lot of python code to maintain.The __init__ functions in many of the classes are very long- some over 100 lines.I like to keep functions/methods short & readable at a glance, if possible. 1. Is it good methodology to move some code from _init__ to it's own method within the cl

Re: [Tutor] Fatal error after RE-installing Python 2.3.4

Message: 1Date: Sat, 23 Sep 2006 08:25:13 -0400From: Kent Johnson <[EMAIL PROTECTED]>Subject: Re: [Tutor] Fatal error after RE-installing Python 2.3.4Cc: tutor@python.orgMessage-ID: < [EMAIL PROTECTED]>Content-Type: text/plain; charset=ISO-8859-1; format=flowed>>Were the extra warnings legitimate

Re: [Tutor] Tutor Digest, Vol 31, Issue 66

Message: 4Date: Sat, 23 Sep 2006 08:38:37 +0100From: "Alan Gauld" < [EMAIL PROTECTED]>Subject: Re: [Tutor] Fatal error after RE-installing Python 2.3.4To: tutor@python.orgMessage-ID: < [EMAIL PROTECTED]>Content-Type: text/plain; format=flowed; charset="iso-8859-1";reply-type=original>>Have

[Tutor] Fatal error after RE-installing Python 2.3.4

I've just started a job which has a massive python2.3.4-centric tools installation and configuration.I know what you're going to say, but I can't upgrade and be the only one with a newer version. There are close to 30 engineers using this same tools configuration, and it has been working fine for a

[Tutor] Making a better main() : Critique request

Some time ago, I had read an article on Guido's blog (I think) about ways to improve the main() functionin a Python script. There were many replies, and I thought I would try to implement some of these ideas. I had found that in every python program I wrote I would 1. check the number of arguments

[Tutor] Unusual behavior in readline

I don't understand why readline is producing such unusual behavior.I don't remember it working like this previously. The docs say it is supposed to read a line at a time.this functiondef ProcessFile(self, Inputfile, Outputfile=None):         try:    fh=open(Inputfile,"r")    ex

[Tutor] simple Model-View-Controller example for QT/PyQT

Does anyone here have a  example/demo using the MVC pattern, in a simple QT/pyQT program?thanks ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor

[Tutor] Confused about embedding python in Html

I want to use embedded python in an html page. However, I dont want to force the user to have python installed for the page to work. Is there any way to make the embedded python code be executed by the server? I'm hoping ti use python as an alternative to vbscript and jaava thanks tony ___

[Tutor] Looking for a Pythonic way to pass variable number of lists to zip()

I have a program which currently passes 6 lists as arguments to zip(), but this could easily change to a larger number of arguments. Would someone suggest a way to pass a variable number of lists to zip() ? ___ Tutor maillist - Tutor@python.org http:

[Tutor] Reading/writing Wave files

After looking at the Python docs for the wave module, I'm a bit puzzled as to how to use it. Does anyone have an example I can browse? If I write to a wave file, is the data I write actually audible, if I use Winamp or some other wave player, or is it more complicated than that? Is the data I w

Re: [Tutor] Iterating over multiple lists- options

map(None, North, South, East West) does exactly what you want: >>> North=['Bill', 'Bob', 'Sue', 'Mary'] >>> South=['Tim', 'Tom', 'Jim', 'John', 'Carl', 'Evan', 'Rich'] >>> map(None, North, South) [('Bill', 'Tim'), ('Bob', 'Tom'), ('Sue', 'Jim'), ('Mary', 'John'), (None, 'Carl'), (None, 'Evan

Re: [Tutor] Iterating over multiple lists- options

LOL > Here's one, just for your amusement: > > But getting back on topic: I like Kent's solution with map() much better > than my own. I had completely forgotten that map() had a special case > that applies directly to what you're trying to do. I havne't seen Kent's reply yet- will have to look

Re: [Tutor] Iterating over multiple lists- options

> Out of curiosity, if it's not possible to run zip() directly on the lists > that you have, can you bend the lists so that zip() will fit? It is possible, however zip() truncates the longer list, based on the size of the smaller list, so it's just not feasible in my case. > Here's a quick functi

[Tutor] Iterating over multiple lists- options

I'm trying to generate an HTML table, from multiple lists. There are 4 lists total, each of which *may* have a different length from the other lists. Each list has been stored in a master dictionary. North=[Bill, Bob, Sue, Mary] South=['Tim', ''Tom', 'Jim', 'John', 'Carl', 'Evan', 'Rich'] etc d1

[Tutor] Leading zero for hex numbers

I'm trying to get Python to automatically print a leading 0 for hex numbers, but it only seems to work for for decimal numbers. print "0x%0X" % 12345 displays 0x3039 instead of 0x03039 The Python docs state The conversion will be zero padded for numeric values, when a 0 is used as a flag betw