Python-URL! - weekly Python news and links (May 14)

Gabriel Genellina python-url at
Thu May 14 23:21:15 CEST 2009

QOTW:  "Tail recursion *unifies* message passing and function calling.
*This* is the reason tail recursion is cool." - JRM

    First beta of Python 3.1 released

    Python-coded scripts can do what LINQ does in expressing queries as
    SQL against a list of rows and columns:
    SQLite is quite wonderful.
    Chaining generators efficiently
    Decorating a method is slightly harder than decorating a plain function:
    heapq.merge() lacks a `key` argument, but it would be very useful:
    Python syntax as a friendlier alternative to those cryptic functional
    On a third hand, JRM argues that tail recursion would only help
    Python, despite the decisions of BDFL.
    The right way to use an "else" clause in a try/except/else:
    Simple way of handling and logging errors:
    Experienced Pythonistas comment on a simple program:
    Serving an image in a web application does not necesarily require a file
    stored on disk:
    Double-clicking a .py file doesn't work: how to fix file associations
    on Windows
    A long thread, started as a request for comments on PEP 382, now
    discussing how evil .pth files are, and other issues involving eggs,
    setuptools, easy _install, distutils and even GNU stow:
    In case you missed it: 'import antigravity' in action!

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

    PythonWare complements the digest you're reading with the
    marvelous daily python url

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

    The Python Papers aims to publish "the efforts of Python enthusiasts":
    The Python Magazine is a technical monthly devoted to Python:

    Readers have recommended the "Planet" sites:

    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.

    The somewhat older Vaults of Parnassus ambitiously collects references
    to all sorts of Python resources.

    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 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.

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

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

    Python FAQTS

    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 commentary.
    It already aggregates quite a bit of Python intelligence.

    Enjoy the *Python Magazine*.

    *Py: the Journal of the Python Language*

    Dr.Dobb's Portal is another source of Python news and articles:
    and Python articles regularly appear at IBM DeveloperWorks:

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