Dr. Dobb's Python-URL! - weekly Python news and links (Jul 28)

Irmen de Jong python-url at phaseit.net
Mon Jul 28 11:19:45 CEST 2003


QOTW:  "What's the reason for having two symbols [!= and <>] mean the same
thing?  Hysterical raisins.  Python originally used only '<>'.  C
programmers whined about that, so Python added '!=' too.  But Python code
already used '<>', so it was too late to get rid of that one.  '<>' was
deprecated instead.  That's a computer science term usually meaning it's
like a mentally disturbed uncle:  we won't kill it, but we won't talk about
it either <wink>.  The good news is that Guido has become more hardened to
whining over the centures since then."       -- Tim Peters

"As they say, science advances, funeral by funeral."
                                            -- Marc Wilson


Discussion
----------
     Raymond Hettinger intrigues with the third episode of a series of
     mysterious Python puzzles.
         <http://groups.google.com/groups?threadm=tH5Ta.24164$7O.4744@nwrdny01.gnilink.net>

     Paul Rubin proposes a language extension to deal with closing files
     in a nice way.
         <http://groups.google.com/groups?threadm=7xhe5b82ip.fsf%40ruckus.brouhaha.com>

     While the original question was about scripting Paint Shop Pro
     Duncan Booth shows how easy it is to write text in an image
     by using PIL.
         <http://groups.google.com/groups?threadm=Xns93C2B04C1DD91duncanrcpcouk@127.0.0.1>

     Steven Taschuk discusses several ways to implement Singletons in Python.
         <http://groups.google.com/groups?threadm=mailman.1058723911.12956.python-list@python.org>

     Raymond St. Marie writes something that I'm not sure of what it is,
     but it is funny nonetheless.
         <http://groups.google.com/groups?threadm=20030726235931.05032.00000547@mb-m26.aol.com>

     Chris Perkins wrote a checkable iterator, for when you need to
     know when an iterator is exhausted.
         <http://groups.google.com/groups?threadm=45228044.0307211220.7590d7e9@posting.google.com>

     Raymond Hettinger argues that a new syntax to create Sets is not needed.
         <http://groups.google.com/groups?threadm=wKEUa.4422$AO6.252@nwrdny02.gnilink.net>

     Bengt Richter gives a detailed analysis and example code for a
     genric 'namespace' type to store variables in.
         <http://groups.google.com/groups?threadm=bfutsf$flc$0@216.39.172.122>

     A possible way to help you finding errors in your Python programs is by
     listing all identifiers that are used. Bengt Richter wrote a little program
     that does just this (mind the correction in the follow-up message).
         <http://groups.google.com/groups?hl=nl&lr=&ie=UTF-8&selm=bfsn0b%24htm%240%40216.39.172.122&rnum=14>
         <http://groups.google.com/groups?hl=nl&lr=&ie=UTF-8&selm=bfsqrs%24q1g%240%40216.39.172.122>

Announcements
-------------
     It was a busy week, last week!

     Guido van Rossum is interviewed in the Wall Street Journal.
         <http://online.wsj.com/article_email/0%2c%2cSB105874358077089900-H9jeoNplal2op2mZYCIb6aAm5%2c00.html>
         <http://groups.google.com/groups?threadm=4868482a.0307211318.8f2e6d0@posting.google.com>

     Bruce Eckel talks with Bill Venners about how Python's minimal finger
     typing allows programmers to focus on the task, not the tool, generating
     a productivity that makes more projects feasible.
         <http://www.artima.com/intv/tipping.html>

     Python 2.3 release candidate 2, the second and last release candidate
     for Python 2.3 This will become Python 2.3 final if no new major bugs
     are found this week.
         <http://www.python.org/2.3/>
     A binary installer for MacPython-2.3rc2 for Mac OS X 10.2:
         <http://www.cwi.nl/ftp/jack/python/mac/MacPython-OSX-2.3rc2-3.dmg>

     PythonD 2.2.1 Release 2.0, a 32-bit, multi-threaded, networking- and
     OpenGL-enabled Python interpreter for DOS and Windows
         <http://members.lycos.co.uk/bdeck/pythond.htm>

     KirbyBase is a simple, pure-python, flat-file database management 
     system ...
	 <http://www.netpromi.com/kirbybase.html>

     Epydoc 2.0, a tool for generating API documentation for Python modules,
     based on their docstrings.
         <http://epydoc.sourceforge.net/>

     Aap's 1.0 release is not only "the first stable version of this
     powerful build tool", but offers the potential of real money
     for interested developers.
         <http://www.a-a-p.org/>

     py2exe 0.4.1, is a distutils extension to convert python scripts into
     windows exe-files (plus a few dlls), able to run on computers without
     requiring a python installation.
         <http://starship.python.net/crew/theller/py2exe/>

     The SciPy '03 Workshop on Scientific Computing with Python is being held
     at Cal Tech again this year. It is a two day workshop held September
     11-12 in Pasadena, CA.
         <http://www.scipy.org/site_content/scipy03>

     WebTK 0.alpha3, a Python framework using Twisted as its underlying
     Web server, allowing webmasters to develop websites like any classic
     GUI software.
         <http://www.webtk.org/>

     Leo 3.12, an outlining editor/browser/organizer for programmers.
         <http://sourceforge.net/projects/leo/>

     numarray 0.6, an array processing extension supporting records,
     memory mapping,  and computational capabilities.
         <http://www.stsci.edu/resources/software_hardware/numarray>

     CUTE 0.1.6, a Qt and Scintilla based text editor which can be
     easily extended using python.
         <http://cute.sf.net>

     SciParam 1.0.0 is a Python package to easily add additional quality
     control for entering scientific parameters in wxPython-based user
     interfaces.
         <http://great-er.intevation.org/sciparam/>

     WordUtils 0.7.0, pure-Python objects related to word searching
     and matching.
         <http://cedar-solutions.com/software/wordutils/>

     Fnorb 1.3, a pure-Python CORBA implementation.
         <http://fnorb.sourceforge.net/>

     cx_Freeze 2.1, a set of utilities for freezing Python scripts into
     executables. cx_OracleDBATools 1.2 and cx_OracleTools 7.1, a set of
     Python scripts that handle Oracle tasks in a cross platform manner.
         <http://starship.python.net/crew/atuining/>

     imgv 2.8.6, a cross-platform image viewer written entirely in Python,
     using Pygame.
         <http://imgv.sourceforge.net/>

     pynum2word-0.1, translate numbers into words in different languages.
         <http://sourceforge.net/projects/pynum2word/>


========================================================================
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://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 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

    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.
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