Mailman 3 March 2008 - Python-announce-list

Toronto Area Python User's Group Meeting
by Mike C. Fletcher March 11, 2008

March 11, 2008

Our regular PyGTA meeting will be occurring for those not at the PyCon sprints. We'll meet at the regular time (7pm) at the regular place (Linux Caffe, on the corner of Grace and Harbord). Topic: Using Core Image (GL-based Mac Graphics Manipulation API) Speaker: Seneca Cunningham Seneca will be describing how to use Core Image to process your images in subtle and advanced ways (think sufficiently complex to support an image bureau). Enjoy everyone, Mike -- ________________________________________________ Mike C. Fletcher Designer, VR Plumber, Coder http://www.vrplumber.com http://blog.vrplumber.com

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CodeInvestigator-0.7.5
by Martien Friedeman March 11, 2008

March 11, 2008

CodeInvestigator version 0.7.5 was released on March 12. A bug was fixed: - Mac OS X line endings are now supported. Thanks Skip! A usability change was made: - Firefox may be running when CodeInvestigator starts. CodeInvestigator opens inside a new tab (Linux, Windows) or a new window (Mac OS X). CodeInvestigator is a tracing tool for Python programs. Running a program through CodeInvestigator creates a recording. Program flow, function calls, variable values and conditions are all stored for every line the program executes. The recording is then viewed with an interface consisting of the code. The code can be clicked: A clicked variable displays its value, a clicked loop displays its iterations. You read code, and have at your disposal all the run time details of that code. A computerized desk check tool and another way to learn about your program. http://sourceforge.net/project/showfiles.php?group_id=183942

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[ANN] Python 2.3.7 and 2.4.5 (final)
by "Martin v. Löwis" March 11, 2008

March 11, 2008

On behalf of the Python development team and the Python community, I'm happy to announce the release of Python 2.4.5 and 2.3.7 (final). Both releases include only security fixes. Python 2.5 is the latest version of Python, we're making this release for people who are still running Python 2.3 or 2.4. See the release notes at the website (also available as Misc/NEWS in the source distribution) for details of bugs fixed; most of them prevent interpreter crashes (and now cause proper Python exceptions in cases where the interpreter may have crashed before). Since the release candidate, we received various reports that the this release may fail to build on current operating systems, in particular on OS X. We have made no attempt to fix these problems, as the release is targeted for systems that were current at the time Python 2.4 was originally released. For more recent systems, you might have to come up with work-arounds. For OS X in particular, try invoking:: ./configure MACOSX_DEPLOYMENT_TARGET=10.5 We have made no changes since the release candidate (except for the version numbers). For more information on Python 2.3.7 and 2.4.5, including download links for various platforms, release notes, and known issues, please see: http://www.python.org/2.3.7 http://www.python.org/2.4.5 Highlights of the previous major Python releases are available from the Python 2.4 page, at http://www.python.org/2.3/highlights.html http://www.python.org/2.4/highlights.html Enjoy this release, Martin Martin v. Loewis martin(a)v.loewis.de Python Release Manager (on behalf of the entire python-dev team)

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SQLObject 0.10.0
by Oleg Broytmann March 11, 2008

March 11, 2008

Hello! I'm pleased to announce version 0.10.0, the first stable release of 0.10 branch of SQLObject. What is SQLObject ================= SQLObject is an object-relational mapper. Your database tables are described as classes, and rows are instances of those classes. SQLObject is meant to be easy to use and quick to get started with. SQLObject supports a number of backends: MySQL, PostgreSQL, SQLite, and Firebird. It also has newly added support for Sybase, MSSQL and MaxDB (also known as SAPDB). Where is SQLObject ================== Site: http://sqlobject.org Development: http://sqlobject.org/devel/ Mailing list: https://lists.sourceforge.net/mailman/listinfo/sqlobject-discuss Archives: http://news.gmane.org/gmane.comp.python.sqlobject Download: http://cheeseshop.python.org/pypi/SQLObject/0.10.0 News and changes: http://sqlobject.org/News.html What's New ========== News since 0.9 -------------- Features & Interface ~~~~~~~~~~~~~~~~~~~~ * Dropped support for Python 2.2. The minimal version of Python for SQLObject is 2.3 now. * Removed actively deprecated attributes; lowered deprecation level for other attributes to be removed after 0.10. * SQLBuilder Select supports the rest of SelectResults options (reversed, distinct, joins, etc.) * SQLObject.select() (i.e., SelectResults) and DBConnection.queryForSelect() use SQLBuilder Select queries; this make all SELECTs implemented internally via a single mechanism. * SQLBuilder Joins handle SQLExpression tables (not just str/SQLObject/Alias) and properly sqlrepr. * Added SQLBuilder ImportProxy. It allows one to ignore the circular import issues with referring to SQLObject classes in other files - it uses the classregistry as the string class names for FK/Joins do, but specifically intended for SQLBuilder expressions. See tests/test_sqlbuilder_importproxy.py. * Added SelectResults.throughTo. It allows one to traverse relationships (FK/Join) via SQL, avoiding the intermediate objects. Additionally, it's a simple mechanism for pre-caching/eager-loading of later FK relationships (i.e., going to loop over a select of somePeople and ask for aPerson.group, first call list(somePeople.throughTo.group) to preload those related groups and use 2 db queries instead of N+1). See tests/test_select_through.py. * Added ViewSQLObject. * Added sqlmeta.getColumns() to get all the columns for a class (including parent classes), excluding the column 'childName' and including the column 'id'. sqlmeta.asDict() now uses getColumns(), so there is no need to override it in the inheritable sqlmeta class; this makes asDict() to work properly on inheritable sqlobjects. * Allow MyTable.select(MyTable.q.foreignKey == object) where object is an instance of SQLObject. * Added rich comparison methods; SQLObjects of the same class are considered equal is they have the same id; other methods return NotImplemented. * RowDestroySignal is sent on destroying an SQLObject instance; postfunctions are run after the row has been destroyed. * Changed the implementation type in BoolCol under SQLite from TINYINT to BOOLEAN and made fromDatabase machinery to recognize it. * MySQLConnection (and DB URI) accept a number of SSL-related parameters: ssl_key, ssl_cert, ssl_ca, ssl_capath. * Use sets instead of dicts in tablesUsed. Dropped tablesUsedDict function; instead there is tablesUsedSet that returns a set of strings. * SQLBuilder tablesUsedSet handles sqlrepr'able objects. * Under MySQL, PickleCol no longer uses TEXT column types; the smallest column is now BLOB - it is not possible to create TINYBLOB column. For a more complete list, please see the news: http://sqlobject.org/News.html Oleg. -- Oleg Broytmann http://phd.pp.ru/ phd(a)phd.pp.ru Programmers don't die, they just GOSUB without RETURN.

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IMDbPY for Symbian
by Davide Alberani March 11, 2008

March 11, 2008

I've released a brand new version of IMDbPY for Symbian mobile phones: http://imdbpy.sf.net/?page=mobile It allows complete access to the IMDb data even to devices with very limited bandwidth and it should also be possible to locally install the whole database, so that no data connection is required. Obviously the code is still in a very early stage, and so I'm here fundamentally searching for someone interested in helping the development, since my skills as Symbian developer are very limited. Any help will be greatly appreciated!

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Python-URL! - weekly Python news and links (Mar 10)
by Gabriel Genellina March 10, 2008

March 10, 2008

QOTW: "My thumb has been putting two spaces after a period for 30 years, so the chances that it's going to change are rather slim. :)" - Grant Edwards "In the past, I used Matlab for prototyping, but over the last few years I have switched to a combination of numpy, scipy, matplotlib, and ipython. When combined with the appropriate libraries, Python can have better numerical performance than Matlab or Octave, nearly identical functionality, and the additional flexibility of Python when you need to munge some text or expose your algorithm as a web service." - Peter Skomoroch http://www.datawrangling.com/python-montage-code-for-displaying-arrays.html English style rules applied to code comments and docstrings: http://groups.google.com/group/comp.lang.python/browse_thread/thread/c9f755… Type detection, duck typing, and protocols: http://groups.google.com/group/comp.lang.python/browse_thread/thread/e05321… Python achieves Solar orbit: http://www.tbray.org/ongoing/When/200x/2008/03/03/Python-at-Sun http://www.sauria.com/blog/2008/03/03/the-sun-is-going-to-shine-on-python/ http://fwierzbicki.blogspot.com/2008/02/jythons-future-looking-sunny.html OOTW from Alex Martelli: to have both Microsoft and Sun support intelligently multithreaded Python implementations takes pressure off Guido's core. A proposal to have SoftExceptions - they raise only when someone is ready to catch them: http://groups.google.com/group/comp.lang.python/browse_thread/thread/ac62e0… The meaning of the 'else' clause in 'for' or 'while' statements isn't obvious: http://groups.google.com/group/comp.lang.python/browse_thread/thread/502f0b… Differences between functions and methods: http://groups.google.com/group/comp.lang.python/browse_thread/thread/acbbd7… Are classes and modules singletons? http://groups.google.com/group/comp.lang.python/browse_thread/thread/1ac7d5… ======================================================================== 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. Just beginning with Python? This page is a great place to start: http://wiki.python.org/moin/BeginnersGuide/Programmers 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: GrassyKnoll 0.3
by Pete March 10, 2008

March 10, 2008

I'm pleased to announce the 0.3 release of GrassyKnoll, a search engine written in Python. This is an exploratory release - while fully functional, it is not production ready. http://grassyknoll.googlecode.com/ Going to Pycon? I'll be giving a presentation on GrassyKnoll at the ChiPy meeting Thursday night: http://us.pycon.org/2008/chicago/chipy/ We'll also be sprinting. Highlights ========== * Multiple storage options * Multiple networked frontends * Multiple wire formats * A clean, powerful data model * Lock-free concurrency * Extensive high-level & source code documentation * A large suite of unittests Use Cases ========= Grassyknoll can provide network-accessible search platform for applications such as: * Site Search: provide "search this site" functionality on your website * Intranet Search: index all of your enterprise data * Desktop Search: simultaneously index and search your laptop's documents, emails, etc.. * More! -- Peter Fein || 773-575-0694 || pfein(a)pobox.com http://www.pobox.com/~pfein/ || PGP: 0xCCF6AE6B irc: pfein(a)freenode.net || jabber: peter.fein(a)gmail.com

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New package: pySNA - Social Network Analysis library
by Mehmet Gencer March 10, 2008

March 10, 2008

Social Network Analysis(SNA) methods are applied in a variety of social science problems to quantify features of relationships between people or organizations. Some example application areas are scientific co-authorship analysis, inter-firm strategic partnership relations, open source collaboration communities, etc. Most SNA methods are based on representing social structures as graphs, but uses its own ways to meausure graph features. pySNA is a library which can be used for manipulation, analysis and visualization of graphs to represent social networks. It has features for dynamic, longitudinal analysis of social networks, which is not common in other SNA software. pySNA uses power of Graphviz, Numpy and RPy for visualization and statistical analysis. I am developing pySNA on my own, as a part of my PhD study. If you have questions, bugs to report, or features you'd like to see in pySNA, please contact me directly: mgencer(a)cs.bilgi.edu.tr pySNA is released under the terms of GNU General Public License, v3. Mehmet Gencer -------------------------- <P><A HREF="http://www.menslibera.com.tr/pysna/">pySNA - Python Social Network Analysis Library - v0.3.0</A> Library for manipulation, visualization, static and dynamic analysis of social networks. (10-Mar-2008)

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SQLObject 0.9.5
by Oleg Broytmann March 10, 2008

March 10, 2008

Hello! I'm pleased to announce the 0.9.5, a minor bug fix release of SQLObject. What is SQLObject ================= SQLObject is an object-relational mapper. Your database tables are described as classes, and rows are instances of those classes. SQLObject is meant to be easy to use and quick to get started with. SQLObject supports a number of backends: MySQL, PostgreSQL, SQLite, and Firebird. It also has newly added support for Sybase, MSSQL and MaxDB (also known as SAPDB). Where is SQLObject ================== Site: http://sqlobject.org Development: http://sqlobject.org/devel/ Mailing list: https://lists.sourceforge.net/mailman/listinfo/sqlobject-discuss Archives: http://news.gmane.org/gmane.comp.python.sqlobject Download: http://cheeseshop.python.org/pypi/SQLObject/0.9.5 News and changes: http://sqlobject.org/News.html What's New ========== News since 0.9.4 ---------------- Bug Fixes ~~~~~~~~~ * Fixed a minor bug in SQLiteConnection.columnsFromSchema() - set dbName. * A bug in delColumn() that removes all properties is fixed by recreating properties. For a more complete list, please see the news: http://sqlobject.org/News.html Oleg. -- Oleg Broytmann http://phd.pp.ru/ phd(a)phd.pp.ru Programmers don't die, they just GOSUB without RETURN.

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ANN: TurboGears 1.0.4.4 Released
by Christopher Arndt March 9, 2008

March 9, 2008

TurboGears 1.0.4.4 Released =========================== The TurboGears team and release manager Florent Aide are pleased to announce the release of TurboGears 1.0.4.4. This release marks the last active version of the stable 1.0 branch. All new developments will now occur in the 1.1 branch. The 1.0 branch will only receive critical bug-fixes and security updates from now on. The TurboGears 1 Team will concentrate on preparing a beta release of the 1.1 branch. The future version 1.1 will provide different defaults for the template engine (Genshi) and the ORM (SQLAlchemy) and should ease transition to the upcoming TurboGears 2.0 version (which builds on Pylons) for 1.0 users. Contributors wanted! -------------------- With the transition to version 1.1. the TurboGears project is now going through a critical phase, and we can use every support by volunteers we can get. Maybe you want to contribute to TurboGears, but you don't know how? Our core developer Chris Zwerschke just posted a call for help on the mailing list, listing more than half a dozen areas where help is needed. A copy of his post can be found on this wiki page: http://docs.turbogears.org/Contributing/HelpWanted Also, PyCon 2008 in Chicago is coming up this week and there will be a TurboGears Sprint Session after the weekend. If you want to get your hands dirty with code NOW, why don't you sign up for the sprint? http://docs.turbogears.org/SprintOrganization What is TurboGears? ------------------- TurboGears is a popular rapid web development megaframework, built from a number of great Python projects and with a bunch of high-level features built within the TurboGears project. The goal of the project is to ease development of modern web applications and support the full stack from database back-end to the web client front-end. For more information about the project and its goals please visit the homepage at http://www.turbogears.org/. Where to get it? ---------------- As always, TurboGears can be installed by following the instructions on the wiki: http://docs.turbogears.org/1.0/Install What's New? ----------- Release 1.0.4.4 is a bug-fix release which addresse a few problems with the last two releases: * The quickstart templates have been cleaned-up. * The session cookie handling routines have been made more robust and more cross-browser compatible. * It is now possible to have an SSL login page while the rest of the web site uses normal HTTP. * Compatibility with SQLAlchemy 0.4.3 was added. For a full list of changes please see the ChangeLog (see below). Contributors ------------ Too many to name them all here ;-) Please see our ChangeLog page for a list of contributors for each release: http://trac.turbogears.org/wiki/ChangeLog We would like to thank everybody involved for their help in putting this release together! Christopher Arndt

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