Mailman 3 July 2007 - Python-announce-list

Python-URL! - weekly Python news and links (Jul 23)
by Gabriel Genellina July 23, 2007

July 23, 2007

QOTW: "It's a good QOTW but social romantic nonsense nevertheless." - Kay Schluehr http://groups.google.com/group/comp.lang.python/browse_thread/thread/6348bf… "If it [the QOTW] were predictable, wouldn't it be boring?" - Peter Otten An analysis of random.shuffle behavior and how large lists can be handled without losing permutations: http://groups.google.com/group/comp.lang.python/browse_thread/thread/6c2c57… String interpolation uses %d,%f,%s as format specifiers, not to declare the type of expected values: http://groups.google.com/group/comp.lang.python/browse_thread/thread/ab65ec… The importance of using the right encoding when dealing with filenames coming from multiple systems: http://comments.gmane.org/gmane.comp.python.general/531291 Several problems (not just being unsafe) using pickled objects across a network: http://comments.gmane.org/gmane.comp.python.general/531309 defaultdict, dict.setdefault and other alternatives to handle missing keys in a dictionary, with some microbenchmarkings: http://search.gmane.org/?query=Pythonic%20way%20for%20missing%20dict%20keys… Old-style vs. new-style classes revisited: http://comments.gmane.org/gmane.comp.python.general/531464 Among the many riches on the Wiki for which we can give thanks are the notes (photos, ...) David Boddie has aggregated from EuroPython2007: http://wiki.python.org/moin/EuroPython2007 Sometimes one wants to know the class and method names currently executing, and that appears to be tricky: http://groups.google.com/group/comp.lang.python/msg/9ac405eeab899ee8 ======================================================================== 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. The Python Papers aims to publish "the efforts of Python enthusiats": http://pythonpapers.org/ The Python Magazine is a technical monthly devoted to Python: http://pythonmagazine.com Readers have recommended the "Planet" sites: http://planetpython.org http://planet.python.org comp.lang.python.announce announces new Python software. Be sure to scan this newsgroup weekly. http://groups.google.com/groups?oi=djq&as_ugroup=comp.lang.python.announce Python411 indexes "podcasts ... to help people learn Python ..." Updates appear more-than-weekly: http://www.awaretek.com/python/index.html Steve Bethard continues the marvelous tradition early borne by Andrew Kuchling, Michael Hudson, Brett Cannon, Tony Meyer, and Tim Lesher 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/ 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. http://www.pythonology.com/success 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 Kurt B. Kaiser publishes a weekly report on faults and patches. http://www.google.com/groups?as_usubject=weekly%20python%20patch Although unmaintained since 2002, the Cetus collection of Python hyperlinks retains a few gems. 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 Many Python conferences around the world are in preparation. Watch this space for links to them. 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?ShowMatch=python&ShowStatus=all 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://www.python.org/dev/peps/pep-0042/ The online Python Journal is posted at pythonjournal.cognizor.com. editor(a)pythonjournal.com and editor(a)pythonjournal.cognizor.com welcome submission of material that helps people's understanding of Python use, and offer Web presentation of your work. del.icio.us presents an intriguing approach to reference commentary. It already aggregates quite a bit of Python intelligence. http://del.icio.us/tag/python *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.pyth… Previous - (U)se the (R)esource, (L)uke! - messages are listed here: http://www.ddj.com/topic/python/ (requires subscription) http://groups-beta.google.com/groups?q=python-url+group:comp.lang.python*&s… http://purl.org/thecliff/python/url.html (dormant) or http://groups.google.com/groups?oi=djq&as_q=+Python-URL!&as_ugroup=comp.lan… There is *not* an RSS for "Python-URL!"--at least not yet. Arguments for and against are occasionally entertained. Suggestions/corrections for next week's posting are always welcome. E-mail to <Python-URL(a)phaseit.net> should get through. To receive a new issue of this posting in e-mail each Monday morning (approximately), ask <claird(a)phaseit.net> to subscribe. Mention "Python-URL!". Write to the same address to unsubscribe. -- The Python-URL! Team-- Phaseit, Inc. (http://phaseit.net) is pleased to participate in and sponsor the "Python-URL!" project. Watch this space for upcoming news about posting archives.

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[ANN] ftputil 2.2.3 released
by Stefan Schwarzer July 22, 2007

July 22, 2007

ftputil 2.2.3 is now available from http://ftputil.sschwarzer.net/download . Changes since version 2.2.2 --------------------------- This release fixes a bug in the ``makedirs`` call (report and fix by Julian, whose last name I don't know ;-) ). Upgrading is recommended. What is ftputil? ---------------- ftputil is a high-level FTP client library for the Python programming language. ftputil implements a virtual file system for accessing FTP servers, that is, it can generate file-like objects for remote files. The library supports many functions similar to those in the os, os.path and shutil modules. ftputil has convenience functions for conditional uploads and downloads, and handles FTP clients and servers in different timezones. Read the documentation at http://ftputil.sschwarzer.net/documentation . License ------- ftputil is Open Source software, released under the revised BSD license (see http://www.opensource.org/licenses/bsd-license.php ). Stefan -- Dr.-Ing. Stefan Schwarzer SSchwarzer.com - Softwareentwicklung für Technik und Wissenschaft http://sschwarzer.com

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ANN: pyparsing1.4.7
by Paul McGuire July 22, 2007

July 22, 2007

I just uploaded the latest release (v1.4.7) of pyparsing, and I'm happy to say, it is not a very big release - this module is getting to be quite stable. A few bug-fixes, and one significant notation enhancement: setResultsNames gains a big shortcut in this release (see below). No new examples in this release, sorry. Here are the notes: - NEW NOTATION SHORTCUT: ParserElement now accepts results names using a notational shortcut, following the expression with the results name in parentheses. So this: stats = "AVE:" + realNum.setResultsName("average") + \ "MIN:" + realNum.setResultsName("min") + \ "MAX:" + realNum.setResultsName("max") can now be written as this: stats = "AVE:" + realNum("average") + \ "MIN:" + realNum("min") + \ "MAX:" + realNum("max") The intent behind this change is to make it simpler to define results names for significant fields within the expression, while keeping the grammar syntax clean and uncluttered. - Fixed bug when packrat parsing is enabled, with cached ParseResults being updated by subsequent parsing. Reported on the pyparsing wiki by Kambiz, thanks! - Fixed bug in operatorPrecedence for unary operators with left associativity, if multiple operators were given for the same term. - Fixed bug in example simpleBool.py, corrected precedence of "and" vs. "or" operations. - Fixed bug in Dict class, in which keys were converted to strings whether they needed to be or not. Have narrowed this logic to convert keys to strings only if the keys are ints (which would confuse __getitem__ behavior for list indexing vs. key lookup). - Added ParserElement method setBreak(), which will invoke the pdb module's set_trace() function when this expression is about to be parsed. - Fixed bug in StringEnd in which reading off the end of the input string raises an exception - should match. Resolved while answering a question for Shawn on the pyparsing wiki. Download pyparsing 1.4.7 at http://sourceforge.net/projects/pyparsing/. The pyparsing Wiki is at http://pyparsing.wikispaces.com -- Paul ======================================== Pyparsing is a pure-Python class library for quickly developing recursive-descent parsers. Parser grammars are assembled directly in the calling Python code, using classes such as Literal, Word, OneOrMore, Optional, etc., combined with operators '+', '|', and '^' for And, MatchFirst, and Or. No separate code-generation or external files are required. Pyparsing can be used in many cases in place of regular expressions, with shorter learning curve and greater readability and maintainability. Pyparsing comes with a number of parsing examples, including: - "Hello, World!" (English, Korean, Greek, and Spanish(new)) - chemical formulas - configuration file parser - web page URL extractor - 5-function arithmetic expression parser - subset of CORBA IDL - chess portable game notation - simple SQL parser - Mozilla calendar file parser - EBNF parser/compiler - Python value string parser (lists, dicts, tuples, with nesting) (safe alternative to eval) - HTML tag stripper - S-expression parser - macro substitution preprocessor

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Dex Tracker .019 released
by edexter July 22, 2007

July 22, 2007

Dex Tracker beta .019 has been released... Dex Tracker is a tracker style front end for csound (and possibly other sound programs in the future). It features things like help files and loading of csound .orc files as well as templates and a number of utilities. Also included is csound routines a library to deal with various csound files. release beta .019 has fixed a number of bugs and now allows the loading or orc files into csd files. Dex Tracker currently requires python 2.5 , pywin, csound, gvim (com object) and . wxpython (tested with 2.6) The download is available at https://sourceforge.net/project/showfiles.php?group_id=156455&package_id=17… and the homepage is at http://www.stormpages.com/edexter/csound.html

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ANN: parley 0.3
by Jacob Lee July 22, 2007

July 22, 2007

Release Announcement: PARLEY version 0.3 PARLEY is a library for writing Python programs that implement the Actor model of distributed systems, in which lightweight concurrent processes communicate through asynchronous message-passing. Actor systems typically are easier to write and debug than traditional concurrent programs that use locks and shared memory. With version 0.3, PARLEY now supports the Greenlet execution model (http://codespeak.net/py/dist/greenlet.html). Greenlets are lightweight threads, similar to the tasklets supported by Stackless Python; unlike tasklets, they do not require a special version of Python. PARLEY also supports tasklets and traditional native threads, and it provides the ability to switch between these modes of execution without substantial code changes. Version 0.3 also includes various bug fixes, additional features, and documentation improvements. Code samples, documentation, and source code can be found at the PARLEY home page: http://osl.cs.uiuc.edu/parley/ PARLEY is licensed under the LGPL. -- Jacob Lee <artdent(a)freeshell.org>

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ANN: Snobol 1.0
by greg July 22, 2007

July 22, 2007

Aahz wrote: > So adding > SNOBOL patterns to another library would be a wonderful gift to the > Python community... I wrote a module for Snobol-style pattern matching a while back, but didn't get around to releasing it. I've just put it on my web page: http://www.cosc.canterbury.ac.nz/greg.ewing/python/Snobol.tar.gz There's no manual yet, but there's a fairly complete set of docstrings and some test cases to figure it out from. -- Greg

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ANN: setuptoolsbzr 0.2 - a setuptools plugin for Bazaar
by Barry Warsaw July 21, 2007

July 21, 2007

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Bazaar[1] is a distributed version control system that provides many useful features over second generation vcs's like Subversion, and it's written in Python. setuptoolsbzr is a plugin enabling Bazaar support for the also awesome setuptools[2] enhancements to Python's distutils. With this plugin, you can manage your projects under Bazaar and setuptools will be able to find version controlled files when it creates packages of your project. To use, all you need to do is add the following to your setup() function: setup( # ... entry_points = { 'setuptools.file_finders': [ 'bzr = setuptoolsbzr:find_files_for_bzr', ], }, setup_requires = [ 'setuptoolsbzr', ], ) setuptools will do the rest. You can of course grab the setuptoolsbzr package separately from the Python Cheeseshop[3]. One caveat: setuptoolsbzr requires that either the command line program bzr(1) be available on your $PATH or that the bzrlib package be installed in your Python's site-packages. setuptoolsbzr has a dependency on the 'bzr' package but this dependency is disabled due to a minor bug in the bzr Cheeseshop tarball[4]. This may not affect you because why would you want to use setuptoolsbzr if you didn't already have bzr installed? For now though, just install Bazaar manually via the tarball available on the bazaar-vcs.org site, or your OS's package manager and you should be good to go. When the bug is fixed, I'll update setuptoolsbzr accordingly. Enjoy, - -Barry [1] http://bazaar-vcs.org [2] http://peak.telecommunity.com/DevCenter/setuptools [3] http://cheeseshop.python.org/pypi/setuptoolsbzr [4] https://bugs.launchpad.net/launchpad/+bug/125521 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (Darwin) iQCVAwUBRqIY1HEjvBPtnXfVAQIj/gP+KbeH95d3kLaQK+1EgT2TvjNrBzhyBOfp rmBGtnzIxmOm2mreo4OzFF1VHrnDDhSonfLKKlCRrfT08B2bxUp6Jybvjv57vAa2 0O4E6uBkmjeNKMTCbUmHVwBaucubQWAggW6C7N3oOUHfP5jl5yOMk1x3FUQFjMyI emCxSm2ql2c= =XQHM -----END PGP SIGNATURE-----

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[ANN] Python documentation team looking for members!
by Georg Brandl July 21, 2007

July 21, 2007

Dear fellow Pythonistas, as you may have heard, Python is going to get a new documentation system soon [1]. As part of that effort, and in order to maintain the excellent quality of the docs, we are looking for members of the maintainers team. This is your chance to get involved with Python development! There will be two main objectives of the group, or maybe two subgroups can be formed: * Maintaining the documentation contents: - processing user submitted comments, bugs and patches - helping out developers with docs-related matters, keeping an eye on commits to ensure quality - keeping the docs up-to-date, e.g. write new sections for new Python 3000 features The docs source will be in reStructuredText, which is already known to a relatively high percentage of Python developers. The new online version of the docs will contain features to add comments and suggest changes, so it is expected that there will be some amount of user involvement. * Development of the toolset: - fixing bugs in the package - adding new output formats, e.g. info or pdf - adding new features to the web application - adapting it to new docutils features The software is written in pure Python. It is currently located in the docutils Subversion repository, at http://svn.berlios.de/viewcvs/docutils/trunk/sandbox/py-rest-doc/ The README file gives you a rough idea what you find there and how to get started, all other questions can be directed to georg(a)python.org, I'll answer them gladly. An additional objective in the near future will, of course, be handling the switch to the new system. Okay, so you've read until here? And you're interested in joining the team? Wow! Write to the docs(a)python.org and become a documentation maintainer! cheers, Georg [1] see http://pyside.blogspot.com/2007/06/introducing-py-rest-doc.html for some details, and http://pydoc.gbrandl.de:3000/ [2] for a demo. (Commenting doesn't work yet, but it's worked upon fiercely...) [2] the demo server is a small vserver with the application served by a single wsgiref instance, and as such not fit to handle large amounts of requests, so it may well be that you don't get good reponse times.

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ANN: eric 4.0.1 release
by Detlev Offenbach July 21, 2007

July 21, 2007

Hi, I would like to announce the immediate availability of eric 4.0.1. This is a bug fix release. As usual it is available via http://www.die-offenbachs.de/eric/index.html Just follow the eric4 download link. What is eric ------------ eric is a Python IDE with all batteries included. For details see the a.m. link. Regards, Detlev -- Detlev Offenbach detlev(a)die-offenbachs.de

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ANN: amplee 0.5.1
by Sylvain Hellegouarch July 20, 2007

July 20, 2007

All, I am really pleased to announce version 0.5.1 of amplee, a Python implementation of the Atom Publishing protocol as per draft-17 [1]. This version is a major release for amplee and will (unfortunately) break existing applications using it due to some changes in its API, although those modifications are minor and the design stays pretty much the same allowing for an easier upgrade. == What's new? == * Changed the member resource API to make it more robust and useful, handling many common tasks for the application developer. * Added support for a distinction of collection and public feed providing a very simple mechanism to create and handle both types of feeds. * Extended the collection API and fixed numerous bugs within. * Added a tarfile storage that permits to store data in a tarball in a transparent fashion (handy for multipart/form-data storage for instance). * Added a memcache storage that can as a proxy storage to cache resources in memcached server using either cmemcache or python-memcache. * Made the storage API more robust and resilient to unicode vs byte string. * Improved and enhanced the indexer module which can now also use memcached to store indexes. * Added a working (finally) example of amplee demonstrating its main features [2]. * Made the unit tests more useful * Added support for Etag in the HTTP handlers * Added a contrib directory containing a schematron schema for Atom related documents as well as a crawler.py module that can browse or test your AtomPub service and reports a set of details about it (simple but useful). * Support for entry points has been extended and allows to support any number of collections via the loader module. * Gazillions of bugs have been fixed and hopefully carefully tested to perish as they deserved. * Fixed memcached indexer defect. * Documentation added. == Download == * easy_install -U amplee * Tarballs http://www.defuze.org/oss/amplee/ * svn co https://svn.defuze.org/oss/amplee/ == Documentation == http://trac.defuze.org/wiki/amplee/ http://trac.defuze.org/wiki/amplee/Tutorial http://www.defuze.org/oss/amplee/api/ == TODO == * Support for collection paging * Improve documentation Have fun, -- Sylvain Hellegouarch http://www.defuze.org [1] http://bitworking.org/projects/atom/draft-ietf-atompub-protocol-17.html [2] http://atompub.defuze.org/

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