Dr. Dobb's Python-URL! - weekly Python news and links (Oct 8)

Erik Max Francis max at alcyone.com
Tue Oct 8 23:57:43 CEST 2002


Thanks to Terry Hancock for his help preparing this week's "Python-URL!".

QOTW:  "This crucial point -- that language preferences and preferences
about libraries and environments ARE quite normally decoupled -- is
often lost on Java fans, who seem to think of a language and a huge set
of libraries and environments as somehow welded.  Most fortunately, they
aren't.  People who prefer the Python language, in particular, can freely
and independently choose to use the set of libraries and environments
designed for Java (thanks to Jython), or those that Classic Python
supports (i.e., with some wrapping work, just about anything available
for/in C or C++, plus Python specials such as Numeric and the like)."
Alex Martelli
http://groups.google.com/groups?selm=2Ezm9.170516%24ub2.3854436%40news1.tin.it

"Why use an algorithm when you've got a gigahertz CPU and a list
comprehension?"  Marco Mariani
http://groups.google.com/groups?selm=mailman.1033675266.10568.python-list%40python.org

"[S]ame software, different verbosity settings (this one goes to eleven)."
-- the effbot on the martellibot    


Articles
    Carl Banks gives a tiny glimpse of tensors, a generalization of
    matrices, and how they relate to scalars and Numeric:
        http://groups.google.com/groups?selm=ana3o6%241u8%241%40solaris.cc.vt.edu

    Mark McEahern reminds us that testing for None-ness is best done
    via the is operator rather than ==, due to the possibility of
    overridden __eq__ methods:
        http://groups.google.com/groups?selm=mailman.1033401218.30030.python-list%40python.org

    Alex Martelli talks about the content and co-editing of the
    excellent _Python Cookbook_ (O'Reilly, 2002):
        http://groups.google.com/groups?selm=XIDm9.203419%24pX1.7296390%40news2.tin.it

    Christopher A. Craig posts a notice about a reference
    implementation for PEP 239 of how builtin Python rationals might
    look:
        http://groups.google.com/groups?selm=mailman.1033596730.13955.python-list%40python.org

    Roy Smith points out that using binary pickles is an easy way to
    boost performance:
        http://groups.google.com/groups?selm=roy-FD4DA7.07325930092002%40reader1.panix.com

    Martin v. Löwis gives fair warning about Tk's partial use of UTF-8
    encoding:
        http://groups.google.com/groups?selm=j4y99fcui3.fsf%40informatik.hu-berlin.de

    Alex Martelli outlines the usage and pitfalls of using the compile
    builtin:
        http://groups.google.com/groups?selm=bSbn9.3037%24Fz.82406%40news1.tin.it

    Martin v. Löwis advises someone on using a factory function when
    they want a constructor to return None, rather than throw, upon
    failure:
        http://groups.google.com/groups?selm=m31y76exns.fsf%40mira.informatik.hu-berlin.de


Threads
    A case study in the performance analysis of the seemingly
    straightforward issue of deleting the first element of a list,,
    with highlights by Alex Martelli on the complexity vs. performance
    for making Python strings mutable:
        http://groups.google.com/groups?threadm=3d9cc939%241%40news.sentex.net


    Merging lists makes brains hurt.  Examples to keep newbies busy:
        http://mail.python.org/pipermail/python-list/2002-October/125389.html

    A long, fragmented thread hammers out the gory details of decimal
    arithmetic, "banker's" arithmetic, floating point, and fixed
    point.  Impress your boss -- have your computer do math the right
    way, the human way, the way that's easy on ten fingers.
        http://groups.google.com/groups?threadm=wzr8f6t1sh.fsf%40cs.uu.nl
        http://groups.google.com/groups?threadm=mailman.1033837810.3061.python-list%40python.org
        http://groups.google.com/groups?threadm=102gna.2ra.ln%40ix.netcom.com
        http://mail.python.org/pipermail/python-list/2002-October/125123.html
    PEP239 (Rational Numbers) Reference Implementation and new issues
    Long and interesting discussion of how rational numbers (fractions
    to those of us who eschew obfuscation) might look in Python.
        http://mail.python.org/pipermail/python-list/2002-October/125455.html

    Can Python be used to debug other languages?  As Cameron Laird
    observes, people have very different ideas of what "debug" means.
    Thus, they answer this question in completely contradictory, but
    perfectly valid ways.
        http://mail.python.org/pipermail/python-list/2002-October/125091.html

    Chris Myers posts a Mensa puzzle involving interpreting the digits
    involved in a multiplication problem, resulting in a variety of
    brute-force solutions in Python:
        http://groups.google.com/groups?threadm=d1f767c3.0210040915.3e695631%40posting.google.com

    Brief exploration of extraction of text from HTML.
	http://mail.python.org/pipermail/python-list/2002-October/125505.html


Software
    Komodo 2.0 appears.
        http://www.activestate.com/Corporate/Communications/Releases/Press1032914489.html  

    The first 3.x beta of PySNMP, an SNMP framework implemented purely
    in Python:
        http://sourceforge.net/projects/pysnmp/

    Barry A. Warsaw releases the standalone 2.4 version of the
    email package, identical to the CVS tree for Python 2.3:
        http://sf.net/projects/mimelib

    It isn't really a screensaver, but then who really needs
    a screensaver anymore? It's art, not engineering, blast it!    
        http://mail.python.org/pipermail/python-list/2002-October/125252.html
        http://home.hccnet.nl/a.vredegoor/screensaver/readme.html

    François Pinard releases version 0.2 of Recodec, a clone of Free
    recode which converts strings or files between character sets:
        http://www.iro.umontreal.ca/~pinard/recodec/

    Klaus G. Müller announces SimPy, the first discrete event
    simulation package for Python:
        http://simpy.sourceforge.net/

    Netfarm Mail Archiver is a Python- and Zope-based mail filter
    which processes all incoming and outgoing emails and extracts
    fields:
        http://oss.netfarm.it/archiver.php

    Python DNS Cache is (you guess it) a DNS cache module written in
    Python:
        http://www.rbgrn.net/projects/

    Bannerfish is a simple banner advertising system using Python and
    Twisted:
        http://itamarst.org/software/bannerfish/


Miscellaneous
    A rundown of what's new in the upcoming Python 2.3 release:
        http://www.python.org/dev/doc/devel/whatsnew/whatsnew23.html

    Python-related quotations, from A.M. Kuchling:
        http://www.amk.ca/quotations/python-quotes/

    How vague can you get? But Benjamin's question "what should I program?"
    raises a number of interesting project inspirations and links.
        http://mail.python.org/pipermail/python-list/2002-September/123654.html


========================================================================

Everything 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
    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 newly-revitalized newsgroup at least weekly.
        http://groups.google.com/groups?oi=djq&as_ugroup=comp.lang.python.announce

    Brett Cannon continues the marvelous tradition established by 
    Andrew Kuchling and Michael Hudson of summarizing action on the
    python-dev mailing list once every other week.
        http://starship.python.net/crew/mwh/summaries/
        http://www.amk.ca/python/dev

    The Vaults of Parnassus ambitiously collect 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 Software Foundation has replaced the Python Consortium
    as an independent nexus of activity
        http://www.python.org/psf/

    Cetus does much of the same
        http://www.cetus-links.org/oo_python.html

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

    The old Python "To-Do List" now lives principally in a
    SourceForge reincarnation.
        http://sourceforge.net/tracker/?atid=355470&group_id=5470&func=browse
        http://python.sourceforge.net/peps/pep-0042.html
     
    The online Python Journal is posted at pythonjournal.cognizor.com.
    editor at pythonjournal.com and editor at 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

    Links2Go is a new semi-automated link collection; it's impressive
    what AI can generate
        http://www.links2go.com/search?search=python

    Tenth International Python Conference 
        http://www.python10.org            

    Archive probing tricks of the trade:
        http://groups.google.com/groups?oi=djq&as_ugroup=comp.lang.python&num=100
        http://groups.google.com/groups?meta=site%3Dgroups%26group%3Dcomp.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 <Python-URL at phaseit.net> should get through.

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(approximately), ask <claird at phaseit.net> to subscribe.  Mention
"Python-URL!".


-- The Python-URL! Team--

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