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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.
http://groups.google.com/groups?selm...%40comcast.com
http://groups.google.com/groups?selm...t%40python.org

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.
http://groups.google.com/groups?selm...%40v.loewis.de

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.
http://groups.google.com/groups?selm...t%40python.org

Tim Peters warns that code in the finally clause may not be executed
under some circumstances.
http://groups.google.com/groups?selm...t%40python.org
The paper by Stephen N. Freund and Mark P. Mitchell is here:
http://www.cs.williams.edu/~freund/papers/02-lwl2.ps

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

Kamilche compares the speed of sets and dictionaries.
http://groups.google.com/groups?thre...ing.google.com

Computers and human beings have different opinions how strings
containing numbers shall be sorted. Conelly Barnes presents a fix.
http://groups.google.com/groups?thre...t%40python.org

Did you ever try to search the python-devel mailing list?
Seo Sanghyeon has a tip that does not involve Google.
http://search.gmane.org/search.php?q...evel&sort=date
================================================== ======================
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
http://www.python.org
Notice especially the master FAQ
http://www.python.org/doc/FAQ.html

PythonWare complements the digest you're reading with the
marvelous daily python url
http://www.pythonware.com/daily
Mygale is a news-gathering webcrawler that specializes in (new)
World-Wide Web articles related to Python.
http://www.awaretek.com/nowak/mygale.html
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.
http://groups.google.com/groups?oi=d...ython.announce

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.
http://www.python.org/dev/summary/

The Python Package Index catalogues packages.
http://www.python.org/pypi/

The somewhat older Vaults of Parnassus ambitiously collects references
to all sorts of Python resources.
http://www.vex.net/~x/parnassus/

Much of Python's real work takes place on Special-Interest Group
mailing lists
http://www.python.org/sigs/

The Python Business Forum "further[s] the interests of companies
that base their business on ... Python."
http://www.python-in-business.org

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.
http://www.python.org/psf/
Among the ways you can support PSF is with a donation.
http://www.python.org/psf/donate.html

Cetus collects Python hyperlinks.
http://www.cetus-links.org/oo_python.html

Python FAQTS
http://python.faqts.com/

The Cookbook is a collaborative effort to capture useful and
interesting recipes.
http://aspn.activestate.com/ASPN/Cookbook/Python

Among several Python-oriented RSS/RDF feeds available are
http://www.python.org/channews.rdf
http://bootleg-rss.g-blog.net/pythonware_com_daily.pcgi
http://python.de/backend.php
For more, see
http://www.syndic8.com/feedlist.php?...ShowStatus=all
The old Python "To-Do List" now lives principally in a
SourceForge reincarnation.
http://sourceforge.net/tracker/?atid...70&func=browse
http://python.sourceforge.net/peps/pep-0042.html

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*
http://www.pyzine.com

Archive probing tricks of the trade:
http://groups.google.com/groups?oi=d...python&num=100
http://groups.google.com/groups?meta....lang.python.*

Previous - (U)se the (R)esource, (L)uke! - messages are listed here:
http://www.ddj.com/topics/pythonurl/
http://purl.org/thecliff/python/url.html (dormant)
or
http://groups.google.com/groups?oi=djq&as_q=+Python-URL!&as_ugroup=comp.lang.python
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
"Python-URL!".
-- 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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