Mailman 3 March 2009 - Python-announce-list

ANN: Python process utility (psutil) 0.1.1 released
by Giampaolo Rodola' March 6, 2009

March 6, 2009

Hi, I'm pleased to announce the 0.1.1 release of psutil: http://code.google.com/p/psutil === About === psutil is a module providing an interface for retrieving information on running processes in a portable way by using Python. It currently supports Linux, OS X, FreeBSD and Windows. === Enhancements === Aside from fixing some bugs psutil 0.1.1 includes the following major enhancements: * FreeBSD support has been added * Support for determining process's UID and GID has been added * Support for determining parent PID of a process * A process_iter() function to iterate over processes as Process objects with a generator has been added * Process objects can now also be compared with == operator for equality (PID, name, command line are compared). As of now psutil is released to the general public, and should be considered a beta release implementing basic functionality. With this second release we'd like to receive feedback from users and suggestions for additional functionality. Patches and volunteers to test/develop for additional platforms welcome! === Links === * Home page: http://code.google.com/p/psutil * Mailing list: http://groups.google.com/group/psutil/topics * Source tarball: http://psutil.googlecode.com/files/psutil-0.1.1.tar.gz * OS X installer: http://psutil.googlecode.com/files/psutil-0.1.1-py2.6-macosx10.4.dmg * Windows Installer (Python 2.6): http://psutil.googlecode.com/files/psutil-0.1.1.win32-py2.6.exe * Api Reference: http://code.google.com/p/psutil/wiki/Documentation Thanks

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[ANNOUNCE] PyGTK 2.14.1
by Gian Mario Tagliaretti March 5, 2009

March 5, 2009

A new stable release of the Python bindings for GTK+ has been released. The new release is available from ftp.gnome.org and its mirrors as soon as its synced correctly: http://ftp.gnome.org/pub/GNOME/sources/pygtk/2.14/ Blurb: GTK+ is a toolkit for developing graphical applications that run on systems such as Linux, Windows and MacOS X. It provides a comprehensive set of GUI widgets, can display Unicode bidi text. It links into the Gnome Accessibility Framework through the ATK library. PyGTK provides a convenient wrapper for the GTK+ library for use in Python programs, and takes care of many of the boring details such as managing memory and type casting. When combined with PyORBit and gnome-python, it can be used to write full featured Gnome applications. Like the GTK+ library itself PyGTK is licensed under the GNU LGPL, so is suitable for use in both free software and proprietary applications. It is already in use in many applications ranging from small single purpose scripts up to large full features applications. What's new since 2.14.0? - Return the deserialized string as a new memory buffer (Gustavo, #567747) - Complete docs with 2.14 API (Gian Mario) PyGTK requires GTK+ >= 2.8.0 and Python >= 2.3.5 to build. Bug reports, as always, should go to Bugzilla; check out http://pygtk.org/developer.html and http://pygtk.org/feedback.html for links to posting and querying bug reports for PyGTK. cheers -- Gian Mario Tagliaretti GNOME Foundation member gianmt(a)gnome.org

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ANN: Peggy 0.01
by Florian Diesch March 5, 2009

March 5, 2009

I'm pleased to announce Peggy 0.01 Get it at http://www.florian-diesch.de/software/peggy/ Peggy helps you to use resources inside a package, especially resources used by PyGtk classes, like images or glade files. It works for zipped eggs or packages just somewhere in sys.path. Peggy is a thin layer on top of setuptools and PyGtk. It's not doing much fancy stuff but can save you from reading some docs ;-) Florian -- <http://www.florian-diesch.de/>

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[ANNOUNCE] Pygtksourceview 2.5.0
by Gian Mario Tagliaretti March 4, 2009

March 4, 2009

I am pleased to announce version 2.5.0 of the Gtksourceview Python bindings. Once the mirrors have sync correctly it will be available at: http://ftp.gnome.org/pub/GNOME/sources/pygtksourceview/2.5/ The bindings are updated with the new Gtksourceview API News in 2.5.0 ============= o Added NBSP to draw spaces (Ignacio Casal Quinteiro) Blurb: ====== gtksourceview is a library that provides a widget for source code display and editing, derived from Gtk's TextView, and used by gedit and nemiver, among others. gtksourceview has recently been released 2.5.6 PyGtksourceview requires: ========================= o Gtksourceview >= 2.3.0 o PyGObject >= 2.15.2 o PyGTK >= 2.8.0 Bug reports should go to: http://bugzilla.gnome.org/browse.cgi?product=pygtksourceview cheers -- Gian Mario Tagliaretti GNOME Foundation member gianmt(a)gnome.org

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[Pycon Tre Italy] Call For Presentations
by dialUAZ###UZ#$AAtone＠gWARAmail.com March 3, 2009

March 3, 2009

For the third year Florence will host the italian edition of PyCon starting from May 8th till May 10th. Unfortunately this year we are a little late in publishing the english version of our CFP. But here we are now. As with last year's edition we will provide real time english-italian and italian-english translation for the main track of the conference and this year's special guest will be none other than Guido himself. Registrations are already open at: http://www.pycon.it/pycon3/registrazione/ where you'll be able to find further information on tickets prices. Conference information is available at our site http://www.pycon.it . The most important deadlines besides those in this CFP are: 13th Apr, End of the Early Bird 4th May, End of Late registrations period. Sponsorships packages are available at this url: http://www.pycon.it/pycon3/sponsorship/ For sponsorship requests contact us at: sponsor(a)pycon.it Here the CFP: Presentations ------ The conference is composed of three parallel tracks: * the *Discovering Python* track will primarily focus on introductory topics about Python libraries, frameworks and technologies; * the *Spreading Python* track will focus both on advanced technical topics and related matters like development methodologies, real-world use cases and management techniques; * the *Learning Python* track will feature a continuous interaction between the speaker and the audience: the speaker will propose a topic and introduce a possible solution, then the talk will dynamically evolve, naturally following questions and notes from the audience. Talks could focus on the following topics (the list is neither exclusive nor exaustive): * vast and/or distributed applications written in Python; * scientific and computationally intensive applications; * interaction with other languages/environments, RPC, services; * web programming and web frameworks; * desktop programming and GUI toolkits; * Python as "scripting" language (system administration, COM, etc...); * Python and databases; * Python as an educational language; Each talk will have one of the following duration: 45, 60 or 90 approximately, inclusive of the time for the audience to enter and leave the room. Please specify which length best fit your contents: some flexibility is available to arrive at the best overall scheduling. ### Community voting Differently from last year, this year the talks' selection process is public: all those who will have bought a ticket no later than March 15 will be able to vote and select the best talk proposals. You can already register at http://www.pycon.it/pycon3/assopy/ to obtain the right to vote. ### How to submit a paper Your talk proposal must be submitted online through Assopy, as soon as it is enabled, by following some simple instructions at http://www.pycon.it/pycon3/assopy/ . ### When, How, and What to submit As a talk proposal, you should just send an abstract with a few text paragraphs about the talk. The evaluation will be easier if you send a detailed description. Once your talk proposal is approved, you'll have to submit the talk slides in PDF format, a few days before the conference opening day. More specific instructions will be available soon. ### A note for non-Italian speakers We warmly welcome and encourage the presence of non-Italian speakers at PyCon Italia. Most talks will be in Italian, though. As last year, we are planning to provide Italian-to-English realtime translation for our guests. We are also like to provide, again, English-to-Italian realtime translation for that part of the audience which is not much familiar with English. **Additional info:** for any questions, please contact us at info(a)pycon.it . ### Important deadlines - March 15th, 2009: Deadline for submitting the talk abstracts for evaluation. - March 29th, 2009: Acknowledge of the talk acceptance, - March 30th, 2009: the talk schedule is published. - May 1, 2009: Deadline for submitting the complete talk slides. To stay up to date, please subscribe to our newsletter, or follow our blog at http://www.pycon.it/blog/. The organization, http://www.pycon.it/pycon3/organizzatori/ . -- Valentino Volonghi aka Dialtone http://stacktrace.it -- Aperiodico di resistenza informatica Blog: http://www.twisted.it/ Public Beta: http://www.adroll.com/

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Python-URL! - weekly Python news and links (Mar 3)
by Gabriel Genellina March 3, 2009

March 3, 2009

QOTW: "A sort of premature pessimization, then." - Steve Holden, in search of an adequate description for a clever indexing scheme http://groups.google.com/group/comp.lang.python/msg/37e7e9e5f9ba6159 Java best coding styles aren't adequate for Python: http://groups.google.com/group/comp.lang.python/t/7d6b74b4904d48ec/ Challenge: break out of this (experimental) restricted execution environment: http://mail.python.org/pipermail/python-list/2009-February/702214.html How to execute an application from inside a zip file (like Java .jar): http://groups.google.com/group/comp.lang.python/t/9c15ce45b6a41192/ How to test functions that depend on today's date: http://groups.google.com/group/comp.lang.python/t/5d1bd739644bc843/ Iterator class to allow restarting a generator: http://groups.google.com/group/comp.lang.python/t/83bd33d29520d71e/ A nested conditional expression (in C) that progressively becomes more and more simple when rewritten in Python: http://groups.google.com/group/comp.lang.python/t/bdd3e0de802fdf7d/ Some people seems worried about the relative performance of Python 3.0 against Ruby 1.9: http://groups.google.com/group/comp.lang.python/t/b2f8043ba168ad75/ A proposed implementation for an Ordered Dictionary: http://groups.google.com/group/comp.lang.python/t/9c2f039e61bd81fb/ A followup revives an old thread (is it "call by value" or "by reference"?) -- but no flames this time: http://groups.google.com/group/comp.lang.python/browse_thread/thread/75a635… ======================================================================== 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 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/group/comp.lang.python.announce/topics Python411 indexes "podcasts ... to help people learn Python ..." Updates appear more-than-weekly: http://www.awaretek.com/python/index.html 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/donations/ The Summary of Python Tracker Issues is an automatically generated report summarizing new bugs, closed ones, and patch submissions. http://search.gmane.org/?author=status%40bugs.python.org&group=gmane.comp.p… 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://code.activestate.com/recipes/langs/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, see: http://www.python.org/channews.rdf 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/ 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 Dr.Dobb's Portal is another source of Python news and articles: http://www.ddj.com/TechSearch/searchResults.jhtml?queryText=python and Python articles regularly appear at IBM DeveloperWorks: http://www.ibm.com/developerworks/search/searchResults.jsp?searchSite=dW&se… Previous - (U)se the (R)esource, (L)uke! - messages are listed here: http://search.gmane.org/?query=python+URL+weekly+news+links&group=gmane.com… http://groups.google.com/groups/search?q=Python-URL!+group%3Acomp.lang.pyth… http://lwn.net/Search/DoSearch?words=python-url&ctype3=yes&cat_25=yes 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] pysqlite 2.5.2
by Gerhard Häring March 3, 2009

March 3, 2009

pysqlite 2.5.2 released ======================= Release focus: minor bugfixes, minor new features. pysqlite is a DB-API 2.0-compliant database interface for SQLite. SQLite is a in-process library that implements a self-contained, serverless, zero-configuration, transactional SQL database engine. Go to http://pysqlite.org/ for downloads, online documentation and for reporting bugs. Changes ======= - Like on Connection.rollback(), Connection.commit() now resets all statements associated to the connection, so that the commit() should always succeed (unless other connections create trouble). - pysqlite used to deliver bogus results on cursors that still have unfetched data when a rollback() was done on the connection. A commit() or rollback() now puts the cursor into a "reset" state. If you try to fetch data after commit() or rollback() you will now get an InterfaceError exception instead of bogus data. - For better DB-API compliance, operations on closed cursors now raise exceptions. - Add amalgamation directory to include path when building statically against amalgamation files. Otherwise, building against the amalgamation only worked if you already had the SQLite3 header files in the search path. Like on my development system ;-) - Made sure HAVE_LOAD_EXTENSION is not defined twice. Also made sure that it's OFF if the OMIT macro is defined. - Fixed check if non-UTF8 strings are acceptable input. The check was wrong for OptimizedUnicode. Also added the missing tests for this feature. - Wrap routine sqlite3_load_extension as method load_extension of the Connection object. Compatibility ============= The fact that commit() and rollback() now reset all associated cursors changes the behaviour of pysqlite. Some code that previously worked will now raise InterfaceError exceptions. OTOH the code did not really *work*, because it produced wrong results. In previous pysqlite versions: >>> from pysqlite2 import dbapi2 as sqlite3 >>> con = sqlite3.connect(":memory:") >>> con.executescript("create table t(c); insert into t(c) values (1); insert into t(c) values (2); insert into t(c) values (3);") <pysqlite2.dbapi2.Cursor object at 0xb7e79d40> >>> cur = con.cursor() >>> cur.execute("insert into t values (4)") <pysqlite2.dbapi2.Cursor object at 0xb7e79770> >>> cur.execute("select * from t") <pysqlite2.dbapi2.Cursor object at 0xb7e79770> >>> con.rollback () >>> print cur.fetchall () [(1,), (1,), (2,), (3,)] ^ ^ !! Notice the duplicate rows with values (1,) !! This code produced wrong results. With this release, the last cur.fetchall() will raise an exception: >>> print cur.fetchall () Traceback (most recent call last): File "<stdin>", line 1, in <module> pysqlite2.dbapi2.InterfaceError: Cursor needed to be reset because of commit/rollback and can no longer be fetched from.

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[ANN] EuroPython 2009 – Open for Registration and Reminder of Participation!
by Martin P. Hellwig March 3, 2009

March 3, 2009

On behalf of the EuroPython 2009 organisation it is my privilege and honour to announce that EuroPython 2009 is open for registration! EuroPython is the conference for the communities around Python, including the Django, Zope and Plone communities. This year's conference will be held in Birmingham, UK from Monday 30th June to Monday 2nd July 2009. Preceding the conference, on Saturday 28th June and Sunday 29th June, are the tutorial days, which can be attended separately. We have a special extra early bird rate, just 95 GBP for the conference and 70 GBP for the tutorials. Be quick, this offer only last untill the 14th of March! For your convenience we negotiated special hotel prices, you can book your conference and hotels all at ones. Register at http://www.europython.eu/registration/ . Talks & Themes We already received a number of very interesting talks, why not add yours? Go to http://www.europython.eu/talks/cfp/ for this year's themes and submissions criteria, the deadline is on 5th April 2009. Other Talks, Activities and Events Have you got something which does not fit the above? Visit http://www.europython.eu/talks/ . Help Us Out We could use a hand, any contribution is welcome, please take a look at http://www.europython.eu/contact/ . Sponsors An unique opportunity to affiliate with the prestigious EuroPython conference! http://www.europython.eu/sponsors/ Spread the Word Improve our publicity by distributing this announcement in your corner of the community, coordinating this with the organizers is highly appreciated. http://www.europython.eu/contact/ General Information For more information about the conference, please visit http://www.europython.eu/ . Looking forward to see you! The EuroPython Team

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Elisa Media Center 0.5.30 Release
by Olivier Tilloy March 2, 2009

March 2, 2009

Dear Python users, The Elisa team is happy to announce the release of Elisa Media Center 0.5.30, code-named "El Condor Pasa". Elisa is a cross-platform and open-source Media Center written in Python. It uses GStreamer [1] for media playback and pigment [2] to create an appealing and intuitive user interface. This release is a "light weight" release, meaning it is pushed through our automatic plugin update system. That is why there is no new Elisa windows installer nor any new packages: use the existing ones for 0.5.27; with the default configuration, they should upgrade automatically to 0.5.30. Tarballs for 0.5.30 are provided for packagers who want to disable the automatic plugin update system on their distribution. A complete list of the issues fixed can be found at: http://bugs.launchpad.net/elisa/+milestone/0.5.30 This is also summarised in the (attached) release notes. Installers and sources can be downloaded from http://elisa.fluendo.com/download/ Bug reports and feature requests are welcome at http://bugs.launchpad.net/elisa/+filebug Have a media-centered evening, Olivier, for the Elisa team [1] http://www.gstreamer.net/ [2] https://code.fluendo.com/pigment/trac Elisa 0.5.30 "El Condor Pasa" ============================= This is Elisa 0.5.30, thirtieth release of the 0.5 branch. Bugs fixed since 0.5.29: - 304324: Music files not indexed in the Music Library after media scanning - 330623: Call to update script is not URL encoded - 247258: most recent in YouTube doesn't work - 315672: [linux] Shouldn't disable screensaver if music is in pause - 331509: Yes.fm shows previous song title Download You can find source releases of Elisa on the download page: http://elisa.fluendo.com/download Elisa Homepage More details can be found on the project's website: http://elisa.fluendo.com Support and Bugs We use Launchpad for bug reports and feature requests: https://bugs.launchpad.net/elisa/+filebug Developers All code is in a Bazaar branch and can be checked out from there. It is hosted on Launchpad: https://code.launchpad.net/elisa Contributors to this release: - César Sánchez Ruiz - David McLeod - Florian Boucault - Guillaume Desmottes - Guillaume Emont - Jesús Corrius - Lionel Martin - Marc Garcia - Maxwell Young - Olivier Tilloy - Philippe Normand

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mingus 0.4 released
by Bart Spaans March 1, 2009

March 1, 2009

Mingus is an advanced, cross-platform music theory and notation package for Python with MIDI file and playback support. It can be used to play around with music theory, to build editors, educational tools and other applications that need to process and/or play music. It can also be used to create sheet music with LilyPond. Version 0.4 of mingus has been released today. A lot has happened since version 0.3: + A separate midi sub-package for playing, reading and writing midi data was added; The reading part is still buggy and should not be relied upon, but the rest works like a charm. + The fluidsynth module now uses the pyFluidSynth bindings instead of depending on a running server to play notes. + A new module named value was added to make dealing with note durations easier. + Added chord substitution algorithms in the progressions module. + More functions, updates and bugfixes in the existing packages (see the change log for detailed information). + Up to date documentation, tutorials and exercises. + Packages for Ubuntu (in PPA) and Arch (NB. these packages are not maintained by me and may not always be up to date). See mingus' homepage for more information and downloads: http://mingus.googlecode.com/

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