🌐 Mailman 3 December 2003 - Python-list - python.org

Idle won't start
by kmneilso＠yahoo.com Feb. 24, 2004

Feb. 24, 2004

For the past couple of months, Idle won't start when I invoke it. I am at a complete loss for why this is. When this happens, they python command line still starts, and python works fine otherwise. Most interesting to me is that a reboot won't fix the problem. But if I just try it again sometime later it will work. Anyone have any ideas? I'm running python 2.3 on windows 2000 professional.

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Need help with C extensions
by Carl Bevil Feb. 23, 2004

Feb. 23, 2004

Hello all. I am attempting to wrap a C library so that I can use it in Python. I've used SWIG on the header for this file, and am able to import and run functions from the library. The problem is that the library makes use of pointers as arguments and as return values. For example, a C function: void GetValues(float* val1, float* val2) This (hypothetical) function takes pointers to floating-point values and modifies the data they point to. How do I represent this in Python? I don't think it's possible to get the address of a variable using Python, as Python has no concept of this. And once I get the value back, how do I examine its contents? A related question has to do with return values. For example, a function: float* GetFloat() In Python, I'd write: myFloat = myModule.GetFloat() SWIG sets the return value to be a string that has an address and a type embedded into it. Again, how do I get the floating-point value out of this? And what if the return value is a pointer to an array of floating-point values? Thanks! Carl

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[XPOST] [REQ] open source multimedia authoring tools? In python maybe?
by stefanogaburri Feb. 8, 2004

Feb. 8, 2004

This is crossposted to comp.lang.python & comp.multimedia; if there is a better place to go please tell me :) I've been asked to build a quick-and-dirty prototype of a simple computer-based training application. You know, those multimedia thingies with text, some videos, a bit of speech and quizzes at the end of the unit... I've been proposed to build a new reusable architecture using Macromedia Director: the reason being, Macromedia Authorware costs too much. Well, I found on the web a lot of tools that cost $100-200 and probably allow me to build such a simple app with a wizard or something like that; but what surprised me is the lack of an open source toolkit or a set of classes to help in the definition of a task that has become very trivial (at least in simple cases like mine). I know the varios GUI toolkits, but they're too low-level; I would have to build the system more or less from scratch. So, what i'm asking is: Am I missing something? Is there a fabled "Zope for CD authoring" I never heard about? If it's indeed missing, i could start building some simple classes and share them with, like, anyone interested :) I could use something like, say, PythonCard and ZODB, trying to define clearly an high-level framework to allow the rapid construction of simple multimedia e-learning apps. That is, if you don't point me to the guys that already did it, of course... thanks a lot to everyone reading so far, Stefano

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devel package rpm install
by Edo Feb. 8, 2004

Feb. 8, 2004

Hi All, When I do "rpm -i python2.3-devel-2.3.2-1pydotorg.i386.rpm", I get error: Failed dependencies: python2.3 = 2.3.2 is needed by python2.3-devel-2.3.2-1pydotorg However, "rpm -qa | grep py" shows: python2.3-2.3-3pydotorg (among others 2.2 packages) If this is not the place to ask, any direction is very welcomed. TIA. Ed. PS. RedHat 9, with full python2.2 and base 2.3 installed.

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How your company think about python?
by d2002xx Feb. 4, 2004

Feb. 4, 2004

Hi all. I've posted a similiar message in comp.lang.java.advocacy, just for curious, but it seems that most people don't know about python... Would you tell me how your company (or your boss, colleagues) think about python? A possible next-generation mainstream? Or just another script? Or they even never heard it? Also, If your company wants to create a new software, will you recommand them to use python even if your boss/colleagues don't know about it? How you tell them the benefits from python? Why or why not?

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ProtoCiv: porting Freeciv to Python
by Brandon J. Van Every Jan. 29, 2004

Jan. 29, 2004

I am - *TENTATIVELY* - (operative word) undertaking the project of porting the GPL open source game "Freeciv" to Python. Freeciv is, in essence, an almost straight clone of Sid Meier's Civilization II, albeit with better cross-platform and multiplayer support. www.freeciv.org I'm undertaking the project independent of the current Freeciv project managers. They are not a variable as to how the project will proceed. Our goals are too disparate for us to attempt to coordinate with each other. I'll consider offers of assistance, although first I must do a lot of work on my own. Still, if my goals strongly ring a chord with your own goals, let's talk. (And conversely, if you want something totally different, let's not waste the breath. ;-) Here are my goals: - the working title of the project is "ProtoCiv," but I'm amenable to better names. "Better," in my parlance, means more marketable and more likely to get people to play / develop / notice / care about / remember the project. - the primary language of ProtoCiv development will be Python. Freeciv is a C codebase, so a lot of migration work is needed. Python will "own" the app, I will be starting at main() and digging as far down as I can easily go. Once the digging is no longer easy, i.e. once I've hit "bad dirt," an initial Python extension interface will be established. Over time, with the help of others, the C code will be whittled away to bare performance essentials. - new coding in C will be actively discouraged. - no clones of commercial games such as Civ II will be supported. One of the first things I'll do in the ProtoCiv project is remove the current Civ II support, and change the game significantly so that it is no longer almost just like Civ II. I find straight or near-straight clones of commercial products to be an offense to the game industry. - "knockoffs" are ok. I define a "knockoff" as something very similar to another game, but still a distinctly different game. For instance, Call To Power II is a knockoff of Civ II, not a clone. - the main purpose of the ProtoCiv project is to encourage rapid prototyping by 4X TBS Game Designers. This is against the desires and energies of the current Freeciv project management, and is my primary reason for going my own way with this. - an \alpha, \beta, and \release directory infrastructure will be established in all distributions so that it's easy for Game Designers to add features and get them distributed for in-the-field testing. Users will voluntarily enable features. In ProtoCiv, there will be no Gatekeepers deciding what game designs may or may not be tried. Anyone will be able to submit \alpha features, although of course they'll be turned off by default and the game developer will have to jazz people up about turning them on. \beta and \release will be more stringently controlled for purposes of making sure the code works, not for purposes of evaluating whether a given game feature is good or not. - ProtoCiv emphasizes Game Designer flexibility, not techie flexibility / libido for its own sake. Gatekeepering to keep the system architecture working properly will be more "traditional." - I am a Windows-centric developer. Currently I'm working on the subgoal of eliminating Freeciv dependencies upon crufty Cygwin and/or MinGW tools. I will be maintaining Visual Studio .NET 2003 solution files. I am amenable to cross-platform support, given that Freeciv already has a lot of cross-platform client code, but Windows development will not be Cygwin or MinGW dependent. - I may integrate .NET support later on, using Python for .NET. - This is a 4X TBS genre project. It is not a RTS, RPG, FPS, or other kind of genre project. Project management will not become confused about the basic nature of 4X TBS. Creating an engine for any game is not a goal. Creating an easily modified 4X TBS engine, starting from a Civ-style codebase, is the goal. - If project components could in fact be used independently of genre, i.e. world map generators, their modularity will be considered. - I'm a commercial developer, not a hobbyist. Project participants are free to treat the project "as a hobby," but when hobbyist and commercial development cultures collide, commercial culture will win. For instance, Commercial developers don't think all tools have to be free, nor does all software have to be open source. Commercial developers do not say "let's wait a long time before trying X." Commercial developers don't badger people about giving away tons of work as some kind of moral virtue. Commercial developers consider time to be money, and assess risk before spending their money. - FWIW I'm a proponent of MIT / BSD style "do whatever you want with it" open source licenses, not GPL. I believe if you're going to give something away, you should give it away completely. And if you don't want to do that, don't give it away. I don't want GPL licenses interfering in my business decisions, what I choose to make open source or proprietary. However, Freeciv is a GPL codebase, so if I want to use it I'm stuck with it. I will be looking for ways to put independent project components under MIT / BSD license. - Because of the GPL license, no commercial gain of any kind is believed possible with this project. My main motives are: 1) get Game Designers to advance the Art and Science of 4X TBS game design 2) prototype game features that I might try in Ocean Mars someday 3) find out what level of 4X TBS modding is or isn't possible - to accomplish these purposes, the project will be actively marketed. i.e. Get articles about it on Gamasutra, Gamedev.net, gamer websites, etc. when it's at an appropriate stage. -- Cheers, www.indiegamedesign.com Brandon Van Every Seattle, WA Taking risk where others will not.

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NEWBIE: What's the instance name?
by engsolnom＠ipns.com Jan. 27, 2004

Jan. 27, 2004

Hi, I've been using constructs(?) like the below. def display(instance, start = None, end = None): if instance.__class__.__name__ == 'UPCA': do some UPCA stuff if instance.__class__.__name__ == 'UPCE': do some UPCE stuff launched by: lx = UPCA(sx), where sx is a string then: display(lx) This all works well. What I'd like to do is display is the instance name. Is it hiding somewhere? Also, if I have a string 4 chars long, representing two bytes of hex, how can I *validate* the string as a *legal* hex string? isdigit works until string = '001A', for example isalnum works, but then allows 'foob' Is there a 'ishexdigit'? I could parse the string, but that seems "un-Pythonish" Thanks in advane....Norm

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Re: "Bad file descriptor" after py2exe or Installer
by Luc Saffre Jan. 24, 2004

Jan. 24, 2004

On 11/12/2003 23:11, Thomas Heller wrote: > It seems I cannot reproduce this with py2exe 0.5. > Can you? Yes: I use py2exe 0.5.0a5. Here is in more detailed, how I reproduce the problem: I used the following installers: Python-2.3.3c1.exe PIL-1.1.4.win32-py2.3.exe py2exe-0.5.0a5.win32-py2.3.exe I installed these three to a clean installation (except for my windows registry where I don't know how to verify cleaness) I place the test.py as described into a separate directory, together with a file setup.py: from distutils.core import setup import py2exe setup( console=["test.py"] ) and then I type "setup py2exe" at the command line. Here is the output of that command: running py2exe *** searching for required modules *** *** parsing results *** creating python loader for extension '_sre' creating python loader for extension 'PIL._imaging' creating python loader for extension '_tkinter' creating python loader for extension 'PIL._imagingtk' *** finding dlls needed *** *** create binaries *** *** byte compile python files *** skipping byte-compilation of C:\PYTHON23\lib\site-packages\PIL\PaletteFile.py to PIL\PaletteFile.pyc skipping byte-compilation of C:\PYTHON23\lib\lib-tk\FixTk.py to FixTk.pyc skipping byte-compilation of C:\PYTHON23\lib\copy_reg.py to copy_reg.pyc skipping byte-compilation of C:\PYTHON23\lib\sre_compile.py to sre_compile.pyc skipping byte-compilation of C:\PYTHON23\lib\site-packages\PIL\ImageChops.py to PIL\ImageChops.pyc skipping byte-compilation of C:\PYTHON23\lib\StringIO.py to StringIO.pyc byte-compiling T:\data\luc\release\lino\tests\py2exe\build\bdist.win32\winexe\temp\_sre.py to _sre.pyc skipping byte-compilation of C:\PYTHON23\lib\macpath.py to macpath.pyc skipping byte-compilation of C:\PYTHON23\lib\popen2.py to popen2.pyc skipping byte-compilation of C:\PYTHON23\lib\atexit.py to atexit.pyc skipping byte-compilation of C:\PYTHON23\lib\dummy_thread.py to dummy_thread.pyc byte-compiling T:\data\luc\release\lino\tests\py2exe\build\bdist.win32\winexe\temp\PIL._imaging.py to PIL\_imaging.pyc skipping byte-compilation of C:\PYTHON23\lib\site-packages\PIL\ImageFilter.py to PIL\ImageFilter.pyc skipping byte-compilation of C:\PYTHON23\lib\site-packages\PIL\GimpGradientFile.py to PIL\GimpGradientFile.pyc skipping byte-compilation of C:\PYTHON23\lib\site-packages\PIL\__init__.py to PIL\__init__.pyc skipping byte-compilation of C:\PYTHON23\lib\posixpath.py to posixpath.pyc byte-compiling T:\data\luc\release\lino\tests\py2exe\build\bdist.win32\winexe\temp\_tkinter.py to _tkinter.pyc skipping byte-compilation of C:\PYTHON23\lib\linecache.py to linecache.pyc skipping byte-compilation of C:\PYTHON23\lib\tempfile.py to tempfile.pyc skipping byte-compilation of C:\PYTHON23\lib\site-packages\PIL\GimpPaletteFile.py to PIL\GimpPaletteFile.pyc skipping byte-compilation of C:\PYTHON23\lib\sre_constants.py to sre_constants.pyc skipping byte-compilation of C:\PYTHON23\lib\re.py to re.pyc skipping byte-compilation of C:\PYTHON23\lib\ntpath.py to ntpath.pyc skipping byte-compilation of C:\PYTHON23\lib\stat.py to stat.pyc skipping byte-compilation of C:\PYTHON23\lib\site-packages\PIL\ImagePalette.py to PIL\ImagePalette.pyc skipping byte-compilation of C:\PYTHON23\lib\lib-tk\Tkinter.py to Tkinter.pyc skipping byte-compilation of C:\PYTHON23\lib\string.py to string.pyc skipping byte-compilation of C:\PYTHON23\lib\warnings.py to warnings.pyc skipping byte-compilation of C:\PYTHON23\lib\UserDict.py to UserDict.pyc skipping byte-compilation of C:\PYTHON23\lib\site-packages\PIL\Image.py to PIL\Image.pyc skipping byte-compilation of C:\PYTHON23\lib\repr.py to repr.pyc byte-compiling T:\data\luc\release\lino\tests\py2exe\build\bdist.win32\winexe\temp\PIL._imagingtk.py to PIL\_imagingtk.pyc skipping byte-compilation of C:\PYTHON23\lib\site-packages\PIL\ImageTk.py to PIL\ImageTk.pyc skipping byte-compilation of C:\PYTHON23\lib\site-packages\PIL\ImageTransform.py to PIL\ImageTransform.pyc skipping byte-compilation of C:\PYTHON23\lib\copy.py to copy.pyc skipping byte-compilation of C:\PYTHON23\lib\site-packages\PIL\ImageColor.py to PIL\ImageColor.pyc skipping byte-compilation of C:\PYTHON23\lib\types.py to types.pyc skipping byte-compilation of C:\PYTHON23\lib\sre.py to sre.pyc skipping byte-compilation of C:\PYTHON23\lib\traceback.py to traceback.pyc skipping byte-compilation of C:\PYTHON23\lib\lib-tk\Tkconstants.py to Tkconstants.pyc skipping byte-compilation of C:\PYTHON23\lib\random.py to random.pyc skipping byte-compilation of C:\PYTHON23\lib\os2emxpath.py to os2emxpath.pyc skipping byte-compilation of C:\PYTHON23\lib\colorsys.py to colorsys.pyc skipping byte-compilation of C:\PYTHON23\lib\sre_parse.py to sre_parse.pyc skipping byte-compilation of C:\PYTHON23\lib\os.py to os.pyc *** copy extensions *** copying C:\PYTHON23\DLLs\_sre.pyd -> T:\data\luc\release\lino\tests\py2exe\dist copying C:\PYTHON23\lib\site-packages\PIL\_imaging.pyd -> T:\data\luc\release\lino\tests\py2exe\dist copying C:\PYTHON23\DLLs\_tkinter.pyd -> T:\data\luc\release\lino\tests\py2exe\dist copying C:\PYTHON23\lib\site-packages\PIL\_imagingtk.pyd -> T:\data\luc\release\lino\tests\py2exe\dist *** copy dlls *** copying u:\CYGWIN\BIN\cygwin1.dll -> T:\data\luc\release\lino\tests\py2exe\dist copying u:\CYGWIN\BIN\tk84.dll -> T:\data\luc\release\lino\tests\py2exe\dist copying C:\WINNT\System32\python23.dll -> T:\data\luc\release\lino\tests\py2exe\dist copying C:\PYTHON23\DLLs\tcl84.dll -> T:\data\luc\release\lino\tests\py2exe\dist copying u:\CYGWIN\BIN\tcl84.dll -> T:\data\luc\release\lino\tests\py2exe\dist copying C:\PYTHON23\lib\site-packages\py2exe\run.exe -> T:\data\luc\release\lino\tests\py2exe\dist\test.exe copying C:\PYTHON23\lib\site-packages\py2exe\run_w.exe -> T:\data\luc\release\lino\tests\py2exe\dist\tkhello.exe Afterwards the dist\test.exe shows the described behavious. I hope that you (or somebody else) can now reproduce the problem. TIA, Luc

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Using python as client-side scripting language in IE 6
by google＠evpopov.com Jan. 23, 2004

Jan. 23, 2004

I try with no luck to use python in a simple html page: <html> <body> <script language="Python"> window.alert('test') window.document.write('test') </script> </body> </html> When opened in IE6 SP1, that does nothing (no error but no message box / nothing written in the page). I ran win32comext\axscript\client\pyscript.py and pyscript_rexec.py to register python as a scripting engine. No errors from those scripts. As I understand it and from what I have read in this forum and elsewhere, it should work, but it doesn't: what am I doing wrong ? Note: I have installed the latest win32all extensions (163) / I'm working on a W2K Server box (SP3).

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Operator overloading and __getattr__
by Samuel Kleiner Jan. 13, 2004

Jan. 13, 2004

I'm trying to create methods on method access- but __getattr__ fails with operator overloading(below) Any suggestions? EG: class NewM(dict): def __getattr__(self,name): def fi(m): if type(name) in self: self[type(name)]=self[type(name)].__dict__[name](m) else: self[type(name)]=m return fi p=int(2) s=NewM() print p.__add__(2) print s.__add__(2) print p+2 print s+2 Causes TypeError on the last line -- "I know, there is no Nobel Prize in preternatural biology. That's because Alfred Nobel's wife was seduced by a vampire." --Andrew Plotkin

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