Python-URL! - weekly Python news and links (Aug 25)

Cameron Laird claird271 at
Thu Aug 25 20:48:42 CEST 2011

[Original draft by Gabriel Genellina.]

QOTW:  "Python is a programming language, not an ice cream shop." -
D'Aprano, 2011-08-10, on providing the language with just "more

   Comparing the relative speed of `i += 1` and `i = i + 1`

   Efficiently split and process a large string:

   Fastest way to do string concatenation:

   An unexpected interaction between function scope and class

   The GIL, once again:

   Three language proposals:
       allow line breaks at operators (very long thread!):
       repeat the right hand side value of assignment statements, as
       issue warnings when builtin names are hidden:

   How to generate and send mails: a step by step tutorial

   Best practices when dealing with unknown exceptions:

   When using extended slicing, behavior of negative stop values is
not fully

   It's not easy to check a folder for write access on Windows:

   Advice on how long a function should be:

   It is relatively easy to confuse the import machinery and make
import fail:

   Non-local variables and exec/eval: a clarification

   An original idea: pure-python templates using the AST

Everything Python-related you want is probably one or two clicks away
these pages:'s Python Language Website is the traditional
   center of Pythonia
   Notice especially the master FAQ

   Just beginning with Python?  This page is a great place to start:

   Planet Python:  you want to visit there:
   But don't confuse it with Planet SciPy:
   And don't confuse *that* with SciPyTip, a high-quality daily (!)
   for the numerically-inclined:

   Python Insider is the official blog of the Python core development

   The Python Software Foundation (PSF) has replaced the Python
   Consortium as an independent nexus of activity.  It has official
   responsibility for Python's development and maintenance.
   Among the ways you can support PSF is with a donation.
   Keep up with the PSF at "Python Software Foundation News":

   The Python Papers aims to publish "the efforts of Python

   Doug Hellman's "Module of the week" is essential reading:

   comp.lang.python.announce announces new Python software.  Be
   sure to scan this newsgroup weekly.

   Python411 indexes "podcasts ... to help people learn Python ..."
   Updates appear more-than-weekly:

   The Python Package Index catalogues packages.

   Much of Python's real work takes place on Special-Interest Group
   mailing lists

   Python Success Stories--from air-traffic control to on-line
   match-making--can inspire you or decision-makers to whom you're
   subject with a vision of what the language makes practical.

   The Summary of Python Tracker Issues is an automatically generated
   report summarizing new bugs, closed ones, and patch submissions.

   nullege is an interesting search Web application, with the
   to distinguish between Python code and comments.  It provides what
   appear to be relevant results, and demands neither Java nor CSS be

   Although unmaintained since 2002, the Cetus collection of Python
   hyperlinks retains a few gems.

   The Cookbook is a collaborative effort to capture useful and
   interesting recipes:

   Many Python conferences around the world are in preparation.
   Watch this space for links to them.

   Among several Python-oriented RSS/RDF feeds available, see:
   For more, see:
   The old Python "To-Do List" now lives principally in a
   SourceForge reincarnation. presents an intriguing approach to reference
   It already aggregates quite a bit of Python intelligence.

   At least one of the Python magazines is explicitly multilingual:

   PythonWare complemented the digest you're reading with the
   marvelous daily python url.  While it's now ... dormant, it still
   has plenty of interesting reading.

   Python articles regularly appear at IBM DeveloperWorks:

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