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Dr. Dobb's Python-URL! - weekly Python news and links (Jun 14)

QOTW: "Software doesn't work, and hardware is unreliable. If you wait for a
guarantee that nothing will go wrong, you'll end up being my age in a just a
few dozen short decades, but without the rollicking good memories that make
me such an agreeable old fart <wink>." - Tim Peters

"The first rule about __slots__ is: don't use them! OTOH the second rule (for
expert only) is: don't use them!" - Michele Simionato
When you are switching from, say, Java you will probably be surprised that
in Python p = 2**24036583 - 1 is all it takes to calculate the largest
known prime number to date. Printing p will also work out of the box, but
may take a bit long. Tim Peters sketches the algorithm Python uses to
generate the decimal representation of an integer and provides code
that can handle very large numbers efficiently.

Does Python have useless destructors? Michael P. Soulier's question
spawns this week's large thread. The language specification makes no
guarantees as to when or even whether the __del__() will be invoked.
Martin von L=F6wis (hopefully) has all you need to know.

The common C++ idiom "Resource acquisition is initialization" (RAII)
does not work with Python. Duncan Booth proposes a potential alternative,
Robert Brewer has a preliminary implementation.

Tim Peters warns that code in the finally clause may not be executed
under some circumstances.
The paper by Stephen N. Freund and Mark P. Mitchell is here:

Chicago-area Pythoneers have not just general plans meeting monthly,
and sharing technical knowledge, but using their Wiki to collect
local success stories.

Kamilche compares the speed of sets and dictionaries.

Computers and human beings have different opinions how strings
containing numbers shall be sorted. Conelly Barnes presents a fix.

Did you ever try to search the python-devel mailing list?
Seo Sanghyeon has a tip that does not involve Google.
================================================== ======================
Everything Python-related you want is probably one or two clicks away in
these pages:

Python.org'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
Mygale is a news-gathering webcrawler that specializes in (new)
World-Wide Web articles related to Python.
While cosmetically similar, Mygale and the Daily Python-URL
are utterly different in their technologies and generally in
their results.

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

Brett Cannon continues the marvelous tradition established by
Andrew Kuchling and Michael Hudson of intelligently summarizing
action on the python-dev mailing list once every other week.

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

The Python Business Forum "further[s] the interests of companies
that base their business on ... Python."

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.

Cetus collects Python hyperlinks.

Python FAQTS

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

Among several Python-oriented RSS/RDF feeds available are
For more, see
The old Python "To-Do List" now lives principally in a
SourceForge reincarnation.

The online Python Journal is posted at pythonjournal.cognizor.com.
ed****@pythonjournal.com and ed****@pythonjournal.cognizor.com
welcome submission of material that helps people's understanding
of Python use, and offer Web presentation of your work.

*Py: the Journal of the Python Language*

Archive probing tricks of the trade:

Previous - (U)se the (R)esource, (L)uke! - messages are listed here:
http://purl.org/thecliff/python/url.html (dormant)
Suggestions/corrections for next week's posting are always welcome.
E-mail to <Py********@phaseit.net> should get through.

To receive a new issue of this posting in e-mail each Monday morning
(approximately), ask <cl****@phaseit.net> to subscribe. Mention
-- The Python-URL! Team--

Dr. Dobb's Journal (http://www.ddj.com) is pleased to participate in and
sponsor the "Python-URL!" project.

Jul 18 '05 #1
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