Mailman 3 May 2008 - Python-Dev

Invitation to try out open source code review tool
by Guido van Rossum May 7, 2008

May 7, 2008

Some of you may have seen a video recorded in November 2006 where I showed off Mondrian, a code review tool that I was developing for Google (http://www.youtube.com/watch?v=sMql3Di4Kgc). I've always hoped that I could release Mondrian as open source, but it was not to be: due to its popularity inside Google, it became more and more tied to proprietary Google infrastructure like Bigtable, and it remained limited to Perforce, the commercial revision control system most used at Google. What I'm … [View More]

18 48

A Python-Dev bundle for TextMate
by Brett Cannon May 6, 2008

May 6, 2008

I just checked in Misc/TextMate/Python-Dev.tmbundle for those of you use TextMate. I have been using this bundle for a while and I figured others could use it. Usage tends to expect that you have opened a project from the top-level directory of a Python checkout. There is support to run the Makefile, build the docs, open the documentation index file (which can be set to an environment variable when you are not in a checkout), open an issue in the browser, and open a PEP in a browser. There is … [View More]

1 0

Re: [Python-Dev] [Python-3000] Reminder: last alphas next Wednesday 07-May-2008
by Greg Ewing May 6, 2008

May 6, 2008

Steve Holden wrote: > If you want it visible, make a visible symbolic link! I have to know it's there first. The idea of an installer deliberately hiding stuff from me in a very unconventional and non-obvious way makes me uncomfortable. -- Greg

1 0

PEP 370 heads up
by Christian Heimes May 6, 2008

May 6, 2008

Dear fellow Pythonistas! Guido has accepted my user site directory PEP today. http://python.org/dev/peps/pep-0370/ I'm about the merge the code. But first I like to let you know some things and get your opinion. The location of the user site-package directory stays as written in my PEP. The master himself said "The location will be somewhere under ~/.local for Unix/Linux/OS X, and %APPDATA%/Python for Windows (per the original proposal in the PEP)." Please do NOT take my check-in message as … [View More]an opportunity to start yet the third bike shed discussion. Thank you very much! :) The PEP adds two environment vars to adjust the location of the user site directory to your liking or to disable the feature entirely. If you are still not convinced you are better off by adding a single line to your .profile file. For now the unit tests are creating the user site directory tree. I'm going to chance that in a few days unless everybody is fine with it. The docs aren't finished yet. Unless somebody is faster than me (*wink*) I'm going to work on the docs after I've finished the rework of the json module. As Brett suggested I'm going to module its input and return values after the pickle module before I merge it into the py3k branch. It's currently mixing unicode and str in a way which is not compatible with py3k. I've added some additional code to the site module. It should become in handy for scripters, debugging and unit tests: $ ./python -m site sys.path = [ '/home/heimes/dev/python/trunk', '/usr/local/lib/python26.zip', '/home/heimes/dev/python/trunk/Lib', '/home/heimes/dev/python/trunk/Lib/plat-linux2', '/home/heimes/dev/python/trunk/Lib/lib-tk', '/home/heimes/dev/python/trunk/Modules', '/home/heimes/dev/python/trunk/build/lib.linux-i686-2.6-pydebug', '/home/heimes/.local/lib/python2.6/site-packages', ] USER_BASE: '/home/heimes/.local' (exists) USER_SITE: '/home/heimes/.local/lib/python2.6/site-packages' (exists) ENABLE_USER_SITE: True $ ./python -m site --help /home/heimes/dev/python/trunk/Lib/site.py [--user-base] [--user-site] Without arguments print some useful information With arguments print the value of USER_BASE and/or USER_SITE separated by ':'. Exit codes with --user-base or --user-site: 0 - user site directory is enabled 1 - user site diretory is disabled by user 2 - uses site directory is disabled by super user or for security reasons >2 - unknown error $ ./python -m site --user-base --user-site /home/heimes/.local:/home/heimes/.local/lib/python2.6/site-packages $ echo $? 0 $ ./python -s -m site --user-base --user-site /home/heimes/.local:/home/heimes/.local/lib/python2.6/site-packages $ echo $? 1 Christian [View Less]

2 2

Another GSoC Student Introduction
by Heiko Weinen May 6, 2008

May 6, 2008

Hi! My name is Heiko N. Weinen and I was accepted as GSoC Student, too. Hoorray! The project i chose is about Filesystem Virtualisation for Python's Standard Library, hopefully something which will prove quite useful. :) Christian Heimes is my Mentor and I'd like to thank him right now for his help. Feel free to contact me, if you have any further questions or related ideas! I will set up a project site at http://heiko.weinen.org/gsoc08 in a few days. Regards, Heiko -- Lubarsky's Law of … [View More]

2 2

Re: [Python-Dev] ctypes documentation
by Benjamin Peterson May 6, 2008

May 6, 2008

On Tue, May 6, 2008 at 11:43 AM, Bill Janssen <janssen(a)parc.com> wrote: > I just made another attempt to use ctypes to wrap a library, and am > facing the same problem I had the last time: the documentation doesn't > really work. I'm wondering if we have any projects underway to > re-write it? So what exactly is eating you about it? -- Cheers, Benjamin Peterson

1 0

Re: [Python-Dev] [Python-3000] Reminder: last alphas next Wednesday 07-May-2008
by Guido van Rossum May 6, 2008

May 6, 2008

On Tue, May 6, 2008 at 7:37 AM, Steve Holden <steve(a)holdenweb.com> wrote: > If you want it visible, make a visible symbolic link! Note that the point is moot, since I'm going to accept Christian's PEP, i.e. ~/.local, but this argument "you can make it visible yourself" is bogus. The point of visibility (when it's brought up) isn't that you *can* make it visible -- you can always do that with ls -a or whatever Finder option. The point is that (in some people's view) the results of … [View More]

1 0

AST Optimization: Branch Elimination in Generator Functions
by Thomas Lee May 6, 2008

May 6, 2008

The next problem that cropped up during the implementation of the AST code optimizer is related to branch elimination and the elimination of any code after a return. Within a FunctionDef node, we would (ideally) like to blow away If nodes with a constant - but false - test expression. e.g.: def foo(): if False: # ... stuff ... For most functions, this will cause no problems and the code will behave as expected. However, if the eliminated branch contains a "yield" expression, the … [View More]

2 1

PEP 8: Discourage named lambdas?
by Terry Reedy May 6, 2008

May 6, 2008

Some people write somename = lambda args: expression instead of the more obvious (to most people) and, dare I say, standard def somename(args): return expression The difference in the result (the only one I know of) is that the code and function objects get the generic name '<lambda>' instead of the more informative (in repr() output or tracebacks) 'somename'. I consider this a disadvantage. In the absence of any compensating advantages (other than the trivial saving of 3 … [View More]

22 28

Module Suggestion: ast
by Armin Ronacher May 5, 2008

May 5, 2008

Hi all, I would like to propose a new module for the stdlib for Python 2.6 and higher: "ast". The motivation for this module is the pending deprecation for compiler.ast which is widely used (debugging, template engines, code coverage etc.). _ast is a very solid module and is without a doubt easier to maintain then compiler.ast which was written in Python, it's lacking some features such as pretty printing the AST or traversing it. The idea of "ast" would be adding high level functionality … [View More]

5 7