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Dr. Dobb's Python-URL! - weekly Python news and links (Jan 23)

Josiah Carlson
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QOTW: "XML with elementtree is what makes me never have [to] think about
XML again." -- Istvan Albert

"'Plays well with others' was a strong motivator for Python's design, and
that often means playing by others' rules." -- Tim Peters

Type mutability, and why some types are immutable. This has been
discussed before, and should be a FAQ topic (if it isn't already):

Caching instances of classes for reuse:

Storing data in a persistant fashion. One link discussing concurrency,
the other discussing data storage mechanisms. A link to PyTables as a
way of storing and indexing large amounts of data, and the announcement
for Dejavu 1.3, which also stores persistant data:

So, you want to use SFTP in Python? Paramiko is the answer (or so I read):

Circular iteration, or any strange iteration tasks? Try itertools!

What do PyChecker and Pylint have to do with each other?
Are they configurable? And do *you* know a half-dozen
distinct formats for printing a multi-line text?

Jeremy Bowers and Dan Stromberg know that some applications
should do the right thing, whether they happen to have a
bit-mapped user interface at run time or not:

The Bangalore Python Meetup first convened on 22 January 2005:

Why generator expressions sometimes don't beat list comprehensions, and
fitting Python to requirements. Let not the anti-functional fashion
obscure that filter() still sometimes makes for better coding than the
comparable list comprehension:

Security is hard. Even the narrow aspect of cryptography is
hard, if only for the complication state politics makes of the
mathematics and engineering involved. Paul Rubin, Nick Craig-
Wood, and others present a few details:

No, really--Python does *that*, too. Although many people
regard hardware interfacing, and its associated bit-twiddling,
as outside Python's purview, they're ... wrong. See for
yourself how Python makes for *clearer* codings than C or
Java or Assembler or ...:

================================================== ======================
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
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."

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.

Kurt B. Kaiser publishes a weekly report on faults and patches.

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 Removed) and (E-Mail Removed)
welcome submission of material that helps people's understanding
of Python use, and offer Web presentation of your work. presents an intriguing approach to reference commentary.
It already aggregates quite a bit of Python intelligence.

*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: (dormant)

Suggestions/corrections for next week's posting are always welcome.
E-mail to <(E-Mail Removed)> should get through.

To receive a new issue of this posting in e-mail each Monday morning
(approximately), ask <(E-Mail Removed)> to subscribe. Mention

-- The Python-URL! Team--

Dr. Dobb's Journal ( is pleased to participate in and
sponsor the "Python-URL!" project.

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