🌐 Mailman 3 March 2010 - Python-list - python.org

easy install failed
by durumdara＠gmail.com March 3, 2010

March 3, 2010

Hi! Windows, Py2.6. I read about Pyda and Spider. I used Pyscripter, Geany, ULIPAD, and COntext, and Netbeans with Python; but I want to try these products. But easy_install failed on get them: C:\Python26\Scripts>easy_install.exe pida Searching for pida Reading http://pypi.python.org/simple/pida/ Reading http://pida.co.uk/ Reading http://pida.co.uk/download/ Reading http://pida.vm.bytemark.co.uk/ Reading http://code.google.com/p/pida/downloads/list Reading http://pida.berlios.de Reading http://pida.berlios.de/index.php/PIDA:Downloads Reading http://pida.berlios.de/downloads/ Best match: pida 0.6beta3 Downloading http://pypi.python.org/packages/source/p/pida/pida-0.6beta3.tar.gz#m d5=ecd790f5dd6f77eb4ebfc719f8e26114 Processing pida-0.6beta3.tar.gz Running pida-0.6beta3\setup.py -q bdist_egg --dist-dir c:\docume~1\chris\locals~ 1\temp\easy_install-vd4hql\pida-0.6beta3\egg-dist-tmp-9zwwxx error: A rendszer nem talßlja a megadott fßjlt {The system cannot found the file} Many of packages are not installed on my system, because of "file" or "path" not found. For example: C:\Python26\Scripts>easy_install.exe kiwi Searching for kiwi Reading http://pypi.python.org/simple/kiwi/ Reading http://www.ivy.fr/kiwi Best match: kiwi 0.8.6 Downloading http://www.ivy.fr/kiwi/kiwi-0.8.6.tar.gz Processing kiwi-0.8.6.tar.gz error: Couldn't find a setup script in c:\docume~1\chris\locals~1\temp\easy_inst all-dxia7w\kiwi-0.8.6.tar.gz May these packages not have "setup.py"? Or not working in Windows? Or they have binaries somewhere, like pywin32, and wxpython? THanks for your help: dd

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process mp3 file
by asit March 3, 2010

March 3, 2010

Somebody suggest me a python library for processing mp3 file. Here I don't want to play the file. Thank you

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Re: python 2.6: how to modify a PIL image from C without copying forth and back
by News123 March 3, 2010

March 3, 2010

Hi Stefan, Stefan Behnel wrote: > News123, 03.03.2010 01:38: >> I created a grayscale image with PIL. >> >> Now I would like to write a C function, which reads a;most all pixels >> and will modify a few of them. >> >> My current approach is: >> - transform the image to a string() >> - create a byte array huge enough to contain the resulting image >> - call my c_function, which copies over the entire image in order >> to modify a few pixels >> How can I achieve this with the least amount of copies? > > Take a look at Cython instead, it will allow you to access PIL's image > buffer directly, instead of copying the data. It will also simplify and > speed up your C wrapper code. > > Stefan > I don't know Cython. Having looked at the web site I'm not entirely sure, I understood your suggestion. Do you mean - to stay with Python 2.6 and to implement only my extension in Cython. This might be very attractive. If yes, can you recommend some url's / tutorials / etc. which might help to implement a cython extension for python2.6. which reads and modifies a pixel of a PIL image. or do you mean - to switch entirely from Python 2.6 to Cython. I would be reluctant to do so, as I have already a lot of existing code. and I do not have the time to check the entire code base for portability issues thanks in advance N

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exp_internal in pexpect
by Pankaj March 3, 2010

March 3, 2010

how to enable expect log in pexpect ? (similar as exp_internal in expect)

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Image.frombuffer and warning
by News123 March 3, 2010

March 3, 2010

Hi, I am using the PIL function from_buffer in python 2.6.4 I am having the line im2 = Image.frombuffer('L',(wx,wy),buf) I receive the warning: > ./pytest.py:63: RuntimeWarning: the frombuffer defaults may change in a future release; for portability, change the call to read: > frombuffer(mode, size, data, 'raw', mode, 0, 1) > im2 = Image.frombuffer('L',(wx,wy),buf) Naively I assumed, that changing my code to im2 = Image.frombuffer('L',(wx,wy),buf,'raw','L',0,1) should fix the issue: However I receive exactly the same error as before. What am I doing wrong? thanks a lot in advance and bye N

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Docstrings considered too complicated
by Andreas Waldenburger March 3, 2010

March 3, 2010

Hi all, a company that works with my company writes a lot of of their code in Python (lucky jerks). I've seen their code and it basically looks like this: """Function that does stuff""" def doStuff(): while not wise(up): yield scorn Now my question is this: How do I kill these people without the authorities thinking they didn't deserve it? /W -- INVALID? DE!

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Re: conditional import into global namespace
by Diez B. Roggisch March 3, 2010

March 3, 2010

Am 02.03.10 21:41, schrieb mk: > Jerry Hill wrote: >> Just import subprocess at the top of your module. If subprocess >> hasn't been imported yet, it will be imported when your module is >> loaded. If it's already been imported, your module will use the >> cached version that's already been imported. >> >> In other words, it sounds like Python already does what you want. You >> don't need to do anything special. > > Oh, thanks! > > Hmm it's different than dealing with packages I guess -- IIRC, in > packages only code in package's __init__.py was executed? I don't understand this. But there is no difference regarding caching & execution between packages and modules. Importing a package will execute the __init__.py, yes. But only once. As will importing modules execute them, but only once. All subsequent imports will just return the created module-object. Unless you import something under a new name! That is, you can alter the sys.path and then import a package/module under a different name - python won't detect that. Simplest example ist this: ---- test.py ---- class Foo(object): pass if __name__ == "__main__": import test # import ourselves # this holds, because we have # __main__.Foo and test.Foo assert Foo is not test.Foo ---- test.py ---- However, unless you mess with python, this is none of your concern. Diez

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Re: nonunique string replacements
by Peter Otten March 3, 2010

March 3, 2010

Ben Racine wrote: > Say I have a string "l" ... > > l = 'PBUSH 201005 K 1. 1. 1. 1. 1. > 1.' > > And I want to replace the first " 1." with a "500.2" and the second " > 1." with " 5.2" ... > > What pythonic means would you all recommend? With regular expressions: >>> import re >>> replacements = iter(["one", "two", "three"]) >>> re.compile("replaceme").sub(lambda m: next(replacements), "foo replaceme bar replaceme baz replaceme bang") 'foo one bar two baz three bang' With string methods: >>> replacements = iter(["", "one", "two", "three"]) >>> "".join(a + b for a, b in zip(replacements, "foo replaceme bar replaceme baz replaceme bang".split("replaceme"))) 'foo one bar two baz three bang' Peter

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Re: nonunique string replacements
by Steven D'Aprano March 3, 2010

March 3, 2010

On Tue, 02 Mar 2010 23:06:13 -0800, Ben Racine wrote: > All, > > Say I have a string "l" ... > > l = 'PBUSH 201005 K 1. 1. 1. 1. 1. > 1.' > > And I want to replace the first " 1." with a "500.2" and the second " > 1." with " 5.2" ... > > What pythonic means would you all recommend? l = l.replace(" 1.", "500.2", 1) l = l.replace(" 1.", "5.2", 1) -- Steven

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nonunique string replacements
by Ben Racine March 3, 2010

March 3, 2010

All, Say I have a string "l" ... l = 'PBUSH 201005 K 1. 1. 1. 1. 1. 1.' And I want to replace the first " 1." with a "500.2" and the second " 1." with " 5.2" ... What pythonic means would you all recommend? Note the whitespace is equal between the existing substring and the replacement string. Many thanks, Ben Racine i3enhamin(a)gmail.com

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