Mailman 3 February 2010 - Python-announce-list

ANN: Leo 4.7 rc1 released
by Edward K Ream Feb. 12, 2010

Feb. 12, 2010

Leo 4.7 release candidate 1 is now available at: http://sourceforge.net/project/showfiles.php?group_id=3458&package_id=29106 Leo 4.7 rc 1 fixes all known serious bugs in Leo; minor nits remain. Leo is a text editor, data organizer, project manager and much more. See: http://webpages.charter.net/edreamleo/intro.html The highlights of Leo 4.7: -------------------------- - Leo now uses the simplest possible internal data model. This is the so-called "one-node" world. - Leo supports Python 3.x. - Leo requires Python 2.6 or above. - Several important improvements in file handling. - Leo converts @file nodes to @thin nodes automatically. - Leo creates a 'Recovered Nodes' node to hold data that otherwise might be lost due to clone conflicts. - @auto-rst now works much more reliably reliably. - Leo no longer supports @noref trees. Such trees are not reliable in cooperative environments. - A new Windows installer. - Many other features, including new command line options and new plugins. - Dozens of bug fixes. Links: ------ Leo: http://webpages.charter.net/edreamleo/front.html Forum: http://groups.google.com/group/leo-editor Download: http://sourceforge.net/project/showfiles.php?group_id=3458 Bzr: http://code.launchpad.net/leo-editor/ Quotes: http://webpages.charter.net/edreamleo/testimonials.html Edward K. Ream February 12, 2010

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Logging in YAML format
by Joan Miller Feb. 12, 2010

Feb. 12, 2010

Yamlog, v0.9 released Yamlog uses a rotating file that rollovers at 128 KB, it writes messages in YAML format since it's more easy to parse --using the international format for date and time--, and it also logs the higher- level messages to the standard error into single lines. http://pypi.python.org/pypi/Yamlog http://github.com/kless/Yamlog

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SmartSweeper: exercise to write "AI" for minesweeper
by Beni Cherniavsky Feb. 12, 2010

Feb. 12, 2010

One day I was bored with MineSweeper not doing even simple analysis for me, and wrote it in Python. Then I realized it'd be nice as an exercise: I give you an implementation of dumb MineSweeper, with GUI, and you subclass it to make it smarter. It comes with a detailed document guiding you step-by-step. If you don't feel like programming but just want to play, it comes with a full solution :-) The latest version will always live at: http://cben-hacks.sourceforge.net/python/smartsweeper/ I'd be happy to hear feedback. -- Beni Cherniavsky-Paskin <cben(a)users.sf.net>

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Announce: Linux Desktop Testing Project (LDTP) 1.7.2 released
by Nagappan Alagappan Feb. 12, 2010

Feb. 12, 2010

Greetings all, We are proud to announce the release of LDTP 1.7.1. This release features number of important breakthroughs in LDTP as well as in the field of Test Automation. This release note covers a brief introduction on LDTP followed by the list of new features and major bug fixes which makes this new version of LDTP the best of the breed. Useful references have been included at the end of this article for those who wish to hack / use LDTP. About LDTP: Linux Desktop Testing Project is aimed at producing high quality test automation framework (C / Python) and cutting-edge tools that can be used to test Linux Desktop and improve it. It uses the Accessibility libraries to poke through the application's user interface. The framework also has tools to record test-cases based on user events in the interface of the application which is under testing. We strive to help in building a quality desktop. NOTE: *** This is a bug fix release only as requested by Sun QA team, we recommend to use LDTPv2 *** Changes in this release: Patch by James Tatum to fix Bug 606224 - Exceptions do not return unicode data Patch by Ara Pulido to fix Bug 603115 - Activate wnck function is not working Bug 603118 - wnck wrappers do not work with LDTP window names Bug 605650 - LDTP core dumps on OpenSolaris Bug 598947 - waittillguiexist() documentation should say if wildcards/regexes are allowed Patch by Adam Collard to fix Bug 599119 - checkrow action fails on table row Special thanks to James Tatum, Ara Pulido, Murray Cumming, Conny Cheng, Adam Collard Download source - http://download.freedesktop.org/ldtp/1.x/1.7.x/ldtp-1.7.2.tar.gz Download rpm - http://download.opensuse.org/repositories/home:/anagappan/ Will schedule deb build soon in openSUSE Build Service References: For detailed information on LDTP framework and latest updates visit http://ldtp.freedesktop.org For information on various APIs in LDTP including those added for this release can be got from http://ldtp.freedesktop.org/user-doc/index.html To subscribe to LDTP mailing lists, visit http://ldtp.freedesktop.org/wiki/Mailing_20list IRC Channel - #ldtp on irc.freenode.net Thanks Nagappan -- Linux Desktop (GUI Application) Testing Project - http://ldtp.freedesktop.org http://nagappanal.blogspot.com

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ANN: ActivePython 2.5.5.7 is now available
by Sridhar Ratnakumar Feb. 12, 2010

Feb. 12, 2010

I'm happy to announce that ActivePython 2.5.5.7 is now available for download from: http://www.activestate.com/activepython/ This is a minor release with several updates and fixes. Changes in 2.5.5.7 ------------------ - Upgrade to Python 2.5.5 - Upgrade to Tcl/Tk 8.5.8 - Upgrade to PyWin32 CVS (2009-11-10) - Security upgrade to openssl-0.9.8l - [Windows] Include Tcl/Tk header files - [Windows] Allow side-by-side installation of 32-bit and 64-bit builds - [Mac] Fix the MacOSX build to use Tcl/Tk 8.5.x See the release notes for full details: http://docs.activestate.com/activepython/2.5/relnotes.html#changes What is ActivePython? --------------------- ActivePython is ActiveState's binary distribution of Python. Builds for Windows, Mac OS X, Linux are made freely available. Builds for Solaris, HP-UX and AIX, and access to older versions are available with ActivePython Business Edition: http://www.activestate.com/business_edition/ ActivePython includes the Python core and the many core extensions: zlib and bzip2 for data compression, the Berkeley DB (bsddb) and SQLite (sqlite3) database libraries, OpenSSL bindings for HTTPS support, the Tix GUI widgets for Tkinter, ElementTree for XML processing, ctypes (on supported platforms) for low-level library access, and others. The Windows distribution ships with PyWin32 -- a suite of Windows tools developed by Mark Hammond, including bindings to the Win32 API and Windows COM. Beginning with the 2.6.3.7 release, ActivePython includes a binary package manager for Python (PyPM) that can be used to install packages much easily. For example: pypm install pylons See this page for full details: http://docs.activestate.com/activepython/2.5/whatsincluded.html As well, ActivePython ships with a wealth of documentation for both new and experienced Python programmers. In addition to the core Python docs, ActivePython includes the "What's New in Python" series, "Dive into Python", the Python FAQs & HOWTOs, and the Python Enhancement Proposals (PEPs). An online version of the docs can be found here: http://docs.activestate.com/activepython/2.5/ We would welcome any and all feedback to: ActivePython-feedback(a)activestate.com Please file bugs against ActivePython at: http://bugs.activestate.com/query.cgi?set_product=ActivePython On what platforms does ActivePython run? ---------------------------------------- ActivePython includes installers for the following platforms: - Windows/x86 - Windows/x64 (aka "AMD64") - Mac OS X - Linux/x86 - Linux/x86_64 (aka "AMD64") - Solaris/SPARC (Business Edition only) - Solaris/x86 (Business Edition only) - HP-UX/PA-RISC (Business Edition only) - AIX/PowerPC (Business Edition only) - AIX/PowerPC 64-bit (Business Edition only) Custom builds are available in Enterprise Edition: http://www.activestate.com/activepython/enterprise/ Thanks, and enjoy! The Python Team -- Sridhar Ratnakumar sridharr at activestate.com

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Save the date: SciPy 2010 June 28 - July 3
by Amenity Applewhite Feb. 11, 2010

Feb. 11, 2010

The annual US Scientific Computing with Python Conference, SciPy, has been held at Caltech since it began in 2001. While we always love an excuse to go to California, it’s also important to make sure that we allow everyone an opportunity to attend the conference. So, as Jarrod Millman announced last fall, we’ll begin rotating the conference location and hold the 2010 conference in Austin, Texas. As you may know, Enthought is headquartered in Austin. So in addition to our standard SciPy sponsorship, this year we’ll also be undertaking a great deal of the planning and organization. To begin with, we’re thrilled to announce that we’ve secured several corporate sponsorships that will allow us to host the conference at the brand new AT&T Executive Education and Conference Center on campus at the University of Texas. It’s a wonderful facility in Central Austin and provides easy access to an array of great restaurants, parks, and music venues. We will also be able to provide stipends for our Tutorial presenters for the first time. These community members provide us with an invaluable learning experience every year, and we’re very excited to be able to compensate them for their efforts. And of course, we’ll also continue to offer student sponsorships to support active academic contributors who want to attend the conference. So mark your calendars, folks! June 28 – July 3. Early registration open now. Thanks, The Enthought Team -- Amenity Applewhite Enthought, Inc. Scientific Computing Solutions www.enthought.com

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Announce: Linux Desktop Testing Project (LDTP) 2.0.3 released
by Nagappan Alagappan Feb. 11, 2010

Feb. 11, 2010

Hello, About LDTP: Linux Desktop Testing Project is aimed at producing high quality test automation framework (using GNOME / Python) and cutting-edge tools that can be used to test Linux Desktop and improve it. It uses the Accessibility libraries to poke through the application's user interface. We strive to help in building a quality desktop. Changes in this release: Return always unicode string in gettextvalue, required to fix automated test script in VMware Workstation Fix ooldtp compatibility with LDTPv1 as reported by Mago [1] team Patch by James Tatum for getallstates compatible with hasstate function Fix bug b.g.o#608413 Fix Firefox preference accessing bug, reported by Aaron Yuan < yuanchong1986(a)gmail.com> Download source: http://download.freedesktop.org/ldtp/2.x/2.0.x/ldtp-2.0.3.tar.gz Download RPM from http://download.opensuse.org/repositories/home:/anagappan:/ldtp2:/rpm/ Will schedule deb build in openSUSE build service tomorrow Documentation references: For detailed information on LDTP framework and latest updates visit http://ldtp.freedesktop.org For information on various APIs in LDTP including those added for this release can be got from http://ldtp.freedesktop.org/user-doc/index.html Report bugs - http://ldtp.freedesktop.org/wiki/Bugs To subscribe to LDTP mailing lists, visit http://ldtp.freedesktop.org/wiki/Mailing_20list IRC Channel - #ldtp on irc.freenode.net Thanks Nagappan [1] - http://mago.ubuntu.com -- Linux Desktop (GUI Application) Testing Project - http://ldtp.freedesktop.org http://nagappanal.blogspot.com

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Announcing IronPython 2.6.1 RC1
by David DiCato Feb. 10, 2010

Feb. 10, 2010

Hello Python Community, We're pleased to announce the release of IronPython 2.6.1 RC1. This version of IronPython makes great strides in stability and compatibility, including a considerable number of targeted bugfixes. Because this is our largest servicing release to date, and due to our decision against incrementing the assembly version numbers, it is important that we get everything right. To this end, we present our first-ever RC for a minor dot release. Of course, your feedback is imperative to the quality of this release, so we'd love to hear from you! IronPython 2.6.1 comes in two flavors - one that runs on top of .NET 4.0 RC, and one that runs on any other framework starting with .NET 2.0 SP1. They can be downloaded here: - IronPython 2.6.1 RC1 for .NET 2.0 SP1: http://ironpython.codeplex.com/Release/ProjectReleases.aspx?ReleaseId=40144 - IronPython 2.6.1 RC1 for .NET 4.0 RC: http://ironpython.codeplex.com/Release/ProjectReleases.aspx?ReleaseId=40146 Note: The .NET Framework 4.0 RC is required for the latter release and can be downloaded at http://www.microsoft.com/downloads/details.aspx?FamilyID=a9ef9a95-58d2-4e51… IronPython 2.6.1 RC1 includes fixes for well over 50 bugs, large and small. Ctypes has had a number of significant updates, including union support, variant_bool, and wintypes. Another focus has been on sys.settrace, making debugging more reliable. For example, sys.settrace now returns the correct frame, supports tracing through modules, and no longer interferes with "import os". Other notable fixes include thread-safe importing, and the missing error code in _winreg exception. In addition, we've made a substantial improvement in import time. Not only does this reduce startup time, but can speed up the importing of large, definition-heavy modules by up to 50%. As you might imagine, the .NET 4.0 flavor of IronPython 2.6.1 RC1 has a few of its own changes designed for better interoperability with the framework. These include fixing some errors with Func<> and better runtime isolation when similarly-named assemblies in different locations are loaded in multiple engines. In addition, both the .NET 2.0 and .NET 4.0 builds support the new .NET 4.0 IStructuralEquatable and IStructuralComparable interfaces and maps them to the appropriate operations (__eq__, __hash__, __gt__, etc.). In the case of .NET 4.0, this replaces IValueEquality as the gold standard for defining equality in an interop-friendly manner. In the .NET 2.0 build, these interfaces are copied so that their use can be phased in while retaining IValueEquality for backwards compatibility. Special thanks to Albert Szilvasy, cendalc, clovery, egonw_, essey, fabiofz, igalse, jazzcat, jlunder, laughingboy, marten_range, László de Almásy, lbaker, Lukas Cenovsky, pl6306, roinet, sanxiyn, Thomas Heller, vernondcole, and Wolfram for reporting issues. Happy Scripting! - The IronPython Team

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[ANN] pyxser-1.4.2r --- Python Object to XML serializer/deserializer
by Daniel Molina Wegener Feb. 10, 2010

Feb. 10, 2010

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 Hello Python Community. I'm pleased to announce pyxser-1.4.2r, a python extension which contains functions to serialize and deserialize Python Objects into XML. It is a model based serializer. Here is the ChangeLog entry for this release: - ---8<--- 1.4.2r (2010.02.10): Daniel Molina Wegener <dmw at coder dot cl> * pyxser_collections.c: Added constraint checks for NULL pointers removing nested statements. * pyxser.c: Removed nested statements. * pyxser_tools.c: Added constratints checks for NULL pointers, removed nested statements and added strict checking for lists since it was crashing with an ambigous list definition that can not be handled by PyList_Check(). * test-utf8.py: Added tests to determine if it continue crashing with module serialization. Thanks to pyxser users for their feedback. - ---8<--- This release contains some bug fixes, mainly related to type checking and type handling. I hope this small extension will help you on your programming tasks. The project is hosted at: http://sourceforge.net/projects/pyxser/ The web page for the project is located at: http://coder.cl/products/pyxser/ PyPi entry is: http://pypi.python.org/pypi?:action=display&name=pyxser&version=1.4.2r For a sample article on how to integrate pyxser with ZSI WebServices: http://coder.cl/2009/10/18/pyxser-and-zsi-webservices/ Thanks and best regards, - -- Daniel Molina Wegener <dmw [at] coder [dot] cl> Software Architect, System Programmer & Web Developer Phone: +1 (510) 629-4267 | Blog: http://coder.cl/ -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) iQIcBAEBCgAGBQJLcwqwAAoJEHxqfq6Y4O5NP2YQAKwiMq7xdutSpEcrXPsD2dxI VQUhzoaJ+Z+N0Vu6nKLM8yOXGkCSD8iuKgV3ZimH3gHhYs/VTvfkNwkfJuck76Vg y3CvJ69rVezYI2ELcsWP0+srxffyy0NHgYEKlKU3Dz06PhNnGx2PMfeG7j5ZGKyz 92J+PMoO6FSlRAmEmGrnjtWaCeNLmlJ2rdSvQ7iSIV8mTwULHB2QubvNs62x+8v5 Mj8XM4HVVEqOI2aF3KuAhYdHj6Exz3O5clnzT6niYl/ukWErSZ6JUJoF9IKcBPVJ LYMCIPvad6llr2FcIatve7MwdmFx/FVNkpd7oZuvLEiQYqxsuT9fv2L/1Ne1IRSM KRLW5/oqekirIURJgFmn6rw0D9Hj5eQXfXTTCHT+RTUaWgMKXFiVkSCHpOeX5M14 i4pp1+xUhje/R+Y05FmdcBivahdc+4UiaQsWODIj/kUbfa455aLrVomdLzXQavg/ 9nY/N5sd0wqdW2vyJrgvap1lAhzP+ktFk/UTetUavvz9bz0tHRB9aTNDS53dfck5 yVX/ZumRdtf4wtwTu/t6gkWD7N0K0Bmy1EB3JNz6KCBvjL8QDB8W/kW+os85QFoz 9NxedRoJNn5nVyos879+ClnHqXVTtkmeJOuLFuh2+9pnfc/KSAvCDXZKPZZNHKYx WdTJKm400Hi9J/pIOzx/ =bv4P -----END PGP SIGNATURE-----

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ANN: Celery 1.0 released
by Ask Solem Feb. 10, 2010

Feb. 10, 2010

=============================== Celery 1.0 has been released! =============================== We're happy to announce the release of Celery 1.0. What is it? =========== Celery is a task queue/job queue based on distributed message passing. It is focused on real-time operation, but supports scheduling as well. The execution units, called tasks, are executed concurrently on one or more worker servers. Tasks can execute asynchronously (in the background) or synchronously (wait until ready). Celery is already used in production to process millions of tasks a day. Celery was originally created for use with Django, but is now usable from any Python project. It can also operate with other languages via webhooks. The recommended message broker is RabbitMQ (http://rabbitmq.org), but support for Redis and databases is also available. For more information please visit http://celeryproject.org Features -------- See http://ask.github.com/celery/getting-started/introduction.html#features Stable API ========== From this version on the public API is considered stable. This means there won't be any backwards incompatible changes in new minor versions. Changes to the API will be deprecated; so, for example, if we decided to remove a function that existed in Celery 1.0: * Celery 1.2 will contain a backwards-compatible replica of the function which will raise a PendingDeprecationWarning. This warning is silent by default; you need to explicitly turn on display of these warnings. * Celery 1.4 will contain the backwards-compatible replica, but the warning will be promoted to a full-fledged DeprecationWarning. This warning is loud by default, and will likely be quite annoying. * Celery 1.6 will remove the feature outright. See the Celery Deprecation Timeline for a list of pending removals: http://ask.github.com/celery/internals/deprecation.html What's new? =========== * Task decorators Write tasks as regular functions and decorate them. There are both task(), and periodic_task() decorators. * Tasks are automatically registered Registering the tasks manually was getting tedious, so now you don't have to anymore. You can still do it manually if you need to, just disable Task.autoregister. The concept of abstract task classes has also been introduced, this is like django models, where only the subclasses of an abstract task is registered. * Events If enabled, the worker will send events, telling you what tasks it executes, their results, and how long it took to execute them. It also sends out heartbeats, so listeners are able to detect nonfunctional workers. This is the basis for the new real-time web monitor we're working on (celerymon: http://github.com/ask/celerymon/). * Rate limiting Global and per task rate limits. 10 tasks a second? or one an hour? You decide. It's using the token bucket algorithm, which is commonly used for network traffic shaping. It accounts for bursts of activity, so your workers won't be bored by having nothing to do. * New periodic task service. Periodic tasks are no longer dispatched by celeryd, but instead by a separate service called *celerybeat*. This is an optimized, centralized service dedicated to your periodic tasks, which means you don't have to worry about deadlocks or race conditions any more. But that does mean you have to make sure only one instance of this service is running at any one time. **TIP:** If you're only running a single celeryd server, you can embed celerybeat inside it. Just add the --beat argument. * Broadcast commands If you change your mind and don't want to run a task after all, you now have the option to revoke it. Also, you can rate limit tasks or even shut down the worker remotely. It doesn't have many commands yet, but we're waiting for broadcast commands to reach its full potential, so please share your ideas if you have any. * Multiple queues The worker is able to receive tasks on multiple queues at once. This opens up a lot of new possibilities when combined with the impressive routing support in AMQP. * Platform agnostic message format. The message format has been standardized and is now using the ISO-8601 format for dates instead of Python datetime objects. This means you can write task consumers in other languages than Python (eceleryd anyone?) * Timely Periodic tasks are now scheduled on the clock, i.e. timedelta(hours=1) means every hour at :00 minutes, not every hour from the server starts. To revert to the previous behavior you have the option to enable PeriodicTask.relative. * ... and a lot more! To read about these and other changes in detail, please refer to the change log: http://celeryproject.org/docs/changelog.html This document contains crucial information for those upgrading from a previous version of Celery, so be sure to read the entire change set before you continue. **TIP:** If you install the setproctitle module you can see which task each worker process is currently executing in ps listings. Just install it using pip: pip install setproctitle. Resources ========= * Homepage: http://celeryproject.org * Download: http://pypi.python.org/pypi/celery * Documentation: http://celeryproject.org/docs/ * Changelog: http://celeryproject.org/docs/changelog.html * Code: http://github.com/ask/celery/ * FAQ: http://ask.github.com/celery/faq.html * Mailing-list: http://groups.google.com/group/celery-users * IRC: #celery on irc.freenode.net.

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