Mailman 3 January 2011 - Python-Dev

Location of tests for packages
by Raymond Hettinger 26 Jan '11

26 Jan '11

Right now, the tests for the unittest package are under the package directory instead of Lib/test where we have most of the other tests. There are some other packages that do the same thing, each for their own reason. I think we should develop a strong preference for tests going under Lib/test unless there is a very compelling reason. We already have a similar preference for all Docs going under Doc/ and that has not proved to be an issue with any package maintainer. * The Windows distro has an install option to exclude Lib/test. The currrent situation with unittest works against it. * The commingling of tests with the regular code is making it more difficult to grep code while excluding tests. * Having packages create their little worlds within world is making it more difficult to find things. * For regrtest to work, there still needs to be some file in Lib/test that dispatches to the alternate test directory. This isn't a critical issue (nothing is broken) but we're a week from another release candidate, so the new Py3.2 package organization (unittest was flat in Py3.1 and its test were under Lib/test) is about to become a de-facto decision that will be hard to undo. I recommend moving it under Lib/test before everything is set in stone. Raymond P.S. I've discussed this with Michael and his preference is against going back to the Py3.1 style where the tests were under Lib/test. He thinks the current tree makes it easier to sync with Py2.7 and the unittest2 third-party module. Also, he likes grepping the regular source and tests all at once.

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Re: [Python-Dev] [Python-checkins] r88155 - python/branches/py3k/Doc/whatsnew/3.2.rst
by Nick Coghlan 25 Jan '11

25 Jan '11

On Mon, Jan 24, 2011 at 11:51 AM, raymond.hettinger <python-checkins(a)python.org> wrote: > Author: raymond.hettinger > Date: Mon Jan 24 02:51:49 2011 > New Revision: 88155 > > Log: > Add entries for dis, dbm, and ctypes. > > > Modified: > python/branches/py3k/Doc/whatsnew/3.2.rst > > Modified: python/branches/py3k/Doc/whatsnew/3.2.rst > ============================================================================== > --- python/branches/py3k/Doc/whatsnew/3.2.rst (original) > +++ python/branches/py3k/Doc/whatsnew/3.2.rst Mon Jan 24 02:51:49 2011 > @@ -1599,6 +1599,51 @@ > > (Contributed by Ron Adam; :issue:`2001`.) > > +dis > +--- For the dis module there is also the change to dis.dis() itself from issue 6507 - you can now pass source strings directly to dis without needing to compile them first: >>> dis.dis("1 + 2") 1 0 LOAD_CONST 2 (3) 3 RETURN_VALUE > +The :mod:`dis` module gained two new functions for inspecting code, > +:func:`~dis.code_info` and :func:`~dis.show_code`. Both provide detailed code > +object information for the supplied function, method, source code string or code > +object. The former returns a string and the latter prints it:: > + > + >>> import dis, random > + >>> show_code(random.choice) Typo here - missing a "dis." at the start of the line. Cheers, Nick. -- Nick Coghlan | ncoghlan(a)gmail.com | Brisbane, Australia

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tahoe-lafs
by Earney, Billy C. 25 Jan '11

25 Jan '11

Greetings! I know that this list is for python development questions/comments, but I wanted to bring up the tahoe-lafs project if people are interested in a project developed in python that allows for secure distributed storage. For more information see http://tahoe-lafs.org For those of you interested in joining a tahoe-lafs storage grid, I'm a member of a newly created storage grid called volunteer-grid2, and we are currently looking for new members. The requirements to be a member can be viewed at http://bigpig.org/twiki/bin/view/Main/AboutVolunteerGrid2 Billy Earney earney(a)umsystem.edu<mailto:earney@umsystem.edu> Programmer/Analyst-Expert [cid:image001.gif@01CBBB9B.FB70CDB0] MySQL Certified DBA Office of Social and Economic Data Analysis (OSEDA) University of Missouri Phone: 573-882-7396 Fax: 573-884-4635

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Keeping __init__.py empty for Python packages used for module grouping.
by Raymond Hettinger 25 Jan '11

25 Jan '11

Looking at http://docs.python.org/dev/library/html.html#module-html it would appear that we've created a new module with a single trivial function. In reality, there was already a python package, html, that served to group two loosely related modules, html.parser and html.entities. ISTM, that if we're going to use python packages as "namespace containers" for categorizing modules, then the top level __init__ namespace should be left empty. Before the placement of html.escape() becomes set in stone, I think we should consider putting it somewhere else. Raymond

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What's new 2.x in 3.x docs.
by Terry Reedy 24 Jan '11

24 Jan '11

The 3.x docs mostly started fresh with 3.0. The major exception is the What's new section, which goes back to 2.0. The 2.x stuff comprises about 650KB in the repository and whatever that translates into in the distribution. I cannot imagine that anyone who only has 3.x and no 2.x version would have any interest in the 2.x history. And of course, the complete 2.x history will always be available with the latest 2.7.z. And the cover page for 3.x could even say so and include a link. So why not remove it from the 3.2 release (and have two separate pages for the online version)? -- Terry Jan Reedy

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(no subject)
by Stefan Spoettl 24 Jan '11

24 Jan '11

Using:Python 2.7.0+ (r27:82500, Sep 15 2010, 18:14:55) [GCC 4.4.5] on linux2(Ubuntu 10.10) Method to reproduce error: 1. Defining a module which is later imported by another: --------------------------------------------------------------------- class SomeThing: def __init__(self): self.variable = 'Where is my bytecode?' def deliver(self): return self.variable if __name__ == '__main__': obj = SomeThing() print obj.deliver() --------------------------------------------------------------------- 2. Run this module:Output of the Python Shell: Where is my bytecode? >>> 3. Defining the importing module: --------------------------------------------------------------------- class UseSomeThing: def __init__(self, something): self.anything = something def giveanything(self): return self.anything if __name__ == '__main__': anything = UseSomeThing(SomeThing.SomeThing().deliver()).giveanything() print anything --------------------------------------------------------------------- 4. Run this module:Output of the Python Shell: Where is my bytecode >>>(One can find SomeThing.pyc on the disc.) 5. Changing the imported module: ---------------------------------------------------------------------class SomeThing: def __init__(self): self.variable = 'What the hell is this? It could not be Python!' def deliver(self): return self.variableif __name__ == '__main__': obj = SomeThing() print obj.deliver()--------------------------------------------------------------------- 6. Run the changed module:Output of the Python Shell: What the hell is this? It could not be Python! >>> 7. Run the importing module again:Output of the Python Shell: Where is my bytecode? >>>8. Deleting the bytecode of the imported module makes no effect! Remark: I think that I have observed yesterday late night a similar effect on Windows XPwith Python 2.7.1 and Python 3.1.3. But when I have tried it out today in the morning theerror hasn't appeared. So it may be that the Python interpreter isn't working correctly onlyon Ubuntu 10.10.

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build problem
by Prasun Ratn 24 Jan '11

24 Jan '11

Hello I got the latest copy of python source from svn and was trying to build it on Windows Vista (32 bit) using Microsoft Visual Express 2008. I got the following error: 5>"C:\Program Files\TortoiseSVN\bin\subwcrev.exe" .. ..\Modules\getbuildinfo.c "E:\coding\py3kclean\py3k\PCbuild\Win32-temp-Debug\pythoncore\\getbuildinfo2.c" 5>'C:\Program' is not recognized as an internal or external command, Adding an extra set of quotes around the command seems to fix this. I've attached a patch. Thanks Prasun

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Re: [Python-Dev] r88147 - in python/branches/py3k: Misc/NEWS Modules/_pickle.c Tools/scripts/find_recursionlimit.py
by Antoine Pitrou 24 Jan '11

24 Jan '11

On Sun, 23 Jan 2011 18:12:26 +0100 (CET) antoine.pitrou <python-checkins(a)python.org> wrote: > Author: antoine.pitrou > Date: Sun Jan 23 18:12:25 2011 > New Revision: 88147 > > Log: > Issue #10987: Fix the recursion limit handling in the _pickle module. I forgot to mention that it was ok'ed by Georg, so there it is. Regards Antoine.

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web framework for py3k
by yeswanth 23 Jan '11

23 Jan '11

I would want to help porting some web framework for py3k .. I want to know to know which one is good and which can be ported easily . Also i would require some guidance for this work as I am just a beginner here .. Thanks Yeswanth

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Re: [Python-Dev] [Python-checkins] r88140 - in python/branches/py3k: Misc/NEWS Modules/zipimport.c
by Alexander Belopolsky 23 Jan '11

23 Jan '11

On Sat, Jan 22, 2011 at 5:30 AM, victor.stinner <python-checkins(a)python.org> wrote: .. > zipimport uses ASCII encoding instead of *cp497* to decode filenames, .. Shouldn't this be "instead of *cp437*"?

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Python-Dev January 2011