Python-URL! - weekly Python news and links (Nov 17)

Gabriel Genellina python-url at
Mon Nov 17 16:54:22 CET 2008

QOTW:  "I stopped paying much attention to this thread a while ago, but
you've got to admire the persistence of somebody who soldiers on even
though Aahz, Fredrik Lund, and Steve Holden are all on the other side of
the argument..." - Grant Edwards

    Duck-typing and type assertions: how much to check for type validity:
    Why do generators have separate next() and send methods?
    Explicit self is here to stay:
    Pros and cons of using "private" parameters to store function state
    across calls:
    How to obtain a reference to the "current" module:
    A regular expression to match all Unicode punctuation characters:
    sqlite3 and MySQLdb cursors behave differently in certain cases:
    Unrelated types are not comparable by default in Python 3 - so a list
    conta= ining a few None elements cannot be sorted.  [plus: the intended
    usage of lists, tuples, and a hypothetical `frozenlist` type]:

    An inspiringly unusual use of Python:
    The way editors handle indentation -triggered by speech
    recognition- should be improved:
    Handling errors by means of exceptions: best practice:
    Inverting a dictionary - that is, building its inverse mapping from
    value to list of keys:
    Candidate to *Longest and Most Boring Thread of the Year* - started
    more than a month ago, currently discussing "The official definition
    of call-by-value", and "What't the value of an object":

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 enthusiats":
    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.

    *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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