🌐 Mailman 3 March 2005 - Python-list - python.org

Newbiw - PypenGL and OpenGLContext
by essenjay＠bigfoot.com March 30, 2005

March 30, 2005

I have been searching for a language to help with a product I am developing - last week I discovered PYOpenGL - looks really useful. I found some demos which I studied to create part of what I need (a heap of boxes) but when I try and add an image to the box faces it looks as if I have to delve into OpenGLContext. Now from here drawing boxes is no longer as simple. My main driver is speed of _development_ (not graphics speed) so I would really like to be able to say box(position_vector, size_vector,texture_file). Am I on the wrong track entirely here, should I pursue OpenGLContext or am I misusing the visual.* parts of PYOpenGL? TIA PS Couldn't find a FAQ that helped.

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checking if program is installing using python
by GujuBoy March 30, 2005

March 30, 2005

i want to check to see if a certain program is installed on my windows box using python. how can i do that...(ie, i want to see if "word" is installed) please help

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Python and USB
by RaviPaike March 30, 2005

March 30, 2005

Rogger, I am trying to use wrapper for libusb. I downloaded the Usb.py but I am not sure that I have the libusb installed on my Pc. Can you help me in getting libusb.py or libusb.c . Thank you, Ravi

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AttributeError: ClassA instance has no attribute '__len__'
by MackS March 30, 2005

March 30, 2005

I'm new to Python. In general I manage to understand what is happening when things go wrong. However, the small program I am writing now fails with the following message: AttributeError: ClassA instance has no attribute '__len__' Following the traceback,I see that the offending line is self.x = arg1 + len(self.y) + 1 Why should this call to the built-in len() fail? In a small test program it works with no problems: class foo: def __init__(self): self.x = 0 self.y = 'y' def fun(self, arg1): self.x = arg1 + len(self.y) + 1 >>> a = foo() >>> a.fun(2) >>> No problems; can you help me make some sense of what is happening? Thanks in advance Mack

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Re: Using something other than ';' to separate statements
by Peter Hansen March 30, 2005

March 30, 2005

Jaime Wyant wrote: > Well, I'm embedding python in an old C console app. This app uses a > lot of ; delimited records. > > I want to allow the execution of arbitrary python statements inside > some of these records. I was hoping there was an easy way to set the > statement terminator. I will simply make up a new terminator and do > some string substitution to turn my new terminator into python's ';'. You refer to it here as a statement terminator, but in the first posting you called it a statement separator. I believe it is just a separator, not a terminator, and as such is not even required unless you need/want to have two statements on the same line. In all the tens of thousands of lines of Python code I've written, I don't believe I've ever used a single semicolon to separate two statements. Perhaps you don't need them either... -Peter

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RELEASED Python 2.4.1 (final)
by Anthony Baxter March 30, 2005

March 30, 2005

On behalf of the Python development team and the Python community, I'm happy to announce the release of Python 2.4.1 (final). Python 2.4.1 is a bug-fix release. See the release notes at the website (also available as Misc/NEWS in the source distribution) for details of the bugs squished in this release. Python 2.4.1 should be a completely painless upgrade from Python 2.4 - no new features have been added. For more information on Python 2.4.1, including download links for various platforms, release notes, and known issues, please see: http://www.python.org/2.4.1/ Highlights of this new release include: - Bug fixes. According to the release notes, several dozen bugs have been fixed, including a fix for the SimpleXMLRPCServer security issue (PSF-2005-001). Highlights of the previous major Python release (2.4) are available from the Python 2.4 page, at http://www.python.org/2.4/highlights.html Enjoy the new release, Anthony Anthony Baxter anthony(a)python.org Python Release Manager (on behalf of the entire python-dev team)

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Re: list-comprehension and map question (simple)
by runsun pan March 30, 2005

March 30, 2005

I remember reading somewhere that the map, filter, reduce are much faster than list comp.

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py2exe sf.net hosed???
by # March 30, 2005

March 30, 2005

download py2exe from here: http://kent.dl.sourceforge.net/sourceforge/py2exe/py2exe-0.3.3.win32-py1.5.…

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CGI, FieldStorage and Filename
by Neil Benn March 30, 2005

March 30, 2005

Hello, I'm writing a simple cgi script and want to be able to access the filename in a FieldStorage file instance. I have successfully manmaged to access the file as a 'file-like object' by using the simple code of : objInFile = objForm['DataFile'].file I can easily read through this data and get all the information out as I need - sorted!! However, when I attempt to access the filename attribute of this using : print 'Content-Disposition: attachment; filename="' + os.path.split(objForm['DataFile'].filename)[0] + '_reformatted.txt"' I get None back for the filename. So I dumped the content of the objForm['DataFile'] to stdout to see what it contains : print objForm['DataFile'] I got back this : FieldStorage('DataFile', 'MOAF_10-12_fin_2.txt', 'Project\tJob\tBarcode\tPlate set <blaahh, blaaahh, blahh>) As you can see, when __str__ is called, the FieldStorage is displaying the name of the client side file - so it knows what it is, however when I call .filename on it, I get None. I don;t get what is happening here - has anyone else seen this and/or knows what I'm doing wrong? If so then all and any help would be much appreciated. Cheers, Neil -- Neil Benn Senior Automation Engineer Cenix BioScience BioInnovations Zentrum Tatzberg 46 D-01307 Dresden Germany Tel : +49 (0)351 4173 154 e-mail : benn(a)cenix-bioscience.com Cenix Website : http://www.cenix-bioscience.com

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Re: Write an hexadecimal file
by Larry Bates March 30, 2005

March 30, 2005

There is not such thing as a hexadecimal file. Files are either binary or text. Hexadecimal is a representation of binary data where 4 bits are displayed as a single hex digit (0-F) as shorthand (because 1111000001111000111 is just too difficult to deal with). To write binary data to a file in Python you open the file with "wb" mode. Example: fp=open('myfile.dat', 'wb') fp.write(bytes) fp.close() >From your post I cannot tell anything more about what you are actually doing, so I hope this helps. Larry Bates Cesar Andres Roldan Garcia wrote: > Hi > > I'm trying to write an hexadecimal file... I mean not a text plain... > I have to convert a float decimal number in float hexadecimal one, and > that's done. > > That number is the one I'm gonna write in the hex file... can anybody > help me 'cause i don't know how python write an hex file! > > Thanks! >

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