Mailman 3 April 2009 - Python-announce-list

itools 0.60.0 released
by "J. David Ibáñez" 21 Apr '09

21 Apr '09

itools is a Python library, it groups a number of packages into a single meta-package for easier development and deployment: itools.abnf itools.i18n itools.stl itools.core itools.ical itools.tmx itools.csv itools.odf itools.uri itools.datatypes itools.pdf itools.vfs itools.gettext itools.pkg itools.web itools.git itools.relaxng itools.workflow itools.handlers itools.rest itools.xapian itools.html itools.rss itools.xliff itools.http itools.srx itools.xml The itools.vfs package has been rewritten to use gio, the virtual file system from the glib project [1]. The web server (itools.web) now uses the glib event loop. Extracting text from office formats is in general much faster. Command line utilities have been replaced by libraries; for instance, now we use 'xlrd' [2] instead of 'xlhtml' [3] to extract text from Excel files. Indexing text is also much faster now that itools.xapian uses the native Xapian [4] tokenizer. Except for Japanese and Chinese, which still use the itools tokenizer. The filesystem database, from itools.handlers, has been much improved: - A read-only mode has been added, implemented by the 'RODatabase' class. - There is a new 'GitDatabase' class that provides atomic transactions and versioning (using Git [5]). - Now there is a limit to the number of file handlers that can be stored in the cache (defaults to five thousands). The code has been re-arranged a little: - The itools.isetup package has been renamed to itools.pkg, and so have been the related scripts: isetup-build.py renamed to ipkg-build.py, etc. - There is a new itools.core package with some basic stuff, the utils.py module at the top level has been removed. - There are three new packages, split from other packages: itools.python from itools.handlers, itools.xmlfile from itools.xml and itools.office from itools.xml The implementation of RML [6] has been removed, now we promote PML instead. See the README file for details on the updated requirements to install itools, and the UPGRADE-0.60.0 file for further details on what has changed. [1] http://www.gtk.org/ [2] http://www.lexicon.net/sjmachin/xlrd.htm [3] http://chicago.sourceforge.net/xlhtml/ [4] http://www.xapian.org [5] http://git-scm.com/ [6] http://www.reportlab.com/docs/RML_UserGuide_1_0.pdf Resources --------- Download http://download.hforge.org/itools/0.60/itools-0.60.0.tar.gz Home http://www.hforge.org/itools/ Mailing list http://www.hforge.org/community/ http://archives.hforge.org/index.cgi?list=itools Bug Tracker http://bugs.hforge.org/ -- J. David Ibáñez Itaapy <http://www.itaapy.com> Tel +33 (0)1 42 23 67 45 9 rue Darwin, 75018 Paris Fax +33 (0)1 53 28 27 88

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ANN: Python-on-a-chip releases PyMite r08
by dwhall 20 Apr '09

20 Apr '09

================ Python-on-a-chip ================ Featuring the PyMite VM ======================= :Author: Dean Hall :Copyright: Copyright 2002 Dean Hall. All rights reserved. PyMite is offered through one of two licenses: commercial or open-source. See the LICENSE file at the root of the package for licensing details. :Release: 08 :Site: http://www.pythononachip.org The Python-on-a-chip Project is pleased to announce the eighth release of PyMite. PyMite is a flyweight Python VM written from scratch to execute on 8-bit and larger microcontrollers with resources as limited as 64 KB of program memory (flash) and 4 KB of RAM. PyMite supports a subset of the Python 2.5 syntax and can execute a subset of the Python 2.5 bytecodes. PyMite can also be compiled, tested and executed on a desktop computer. Here are the important new features in this release: - Fixed a float endian issue - Fixed gc bug during ipm - Fixed segfault when num args is fewer than expected - Implemented plat module for mbed platform - Created porting document - Added scons build capability !!Dean

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Python Bootcamp - Last 2 weeks to Register (May 11-15, 2009)
by Chander Ganesan 20 Apr '09

20 Apr '09

Just a reminder that there are only 2 weeks remaining to register for the Open Technology Group's Python Bootcamp, a 5 day hands-on, intensive, in-depth introduction to Python. This course is confirmed and guaranteed to run. Worried about the costs of air and hotel to travel for training? Don't! Our All-Inclusive Packages provide round-trip airfare and hotel accommodations and are available for all students attending from the Continental US, Canada, and Europe! Best of all, these packages can be booked up to May 10, 2009! For complete course outline/syllabus, or to enroll, call us at 877-258-8987 or visit our web site at: http://www.otg-nc.com/python-bootcamp OTG's Python Bootcamp is a 5 day intensive course that teaches programmers how to design, develop, and debug applications using the Python programming language. Over a 5 day period, through a set of lectures, demonstrations, and hands-on exercises students will learn how to develop powerful applications using Python and integrate their new found Python skills in their day-to-day job activities. Students will also learn how to utilize Python's Database API to interface with relational databases. This Python course is available for on-site delivery world-wide (we bring the class to you) for a group as small as 3, for as little as $8,000 (including instructor travel & per-diem)! Our course is guaranteed to run, regardless of enrollment, and available in an "all inclusive" package that includes round-trip airfare, 5 nights of hotel accommodation, shuttle services (to/from the airport, to/from our facility, and to/from local eateries/shopping), and our training. All-inclusive packages are priced from $2,495 for the 5 day course (course only is $2,295). For more information - or to schedule an on-site course, please contact us at 877-258-8987 . The Open Technology Group is the world leader in the development and delivery of training solutions focused around Open Source technologies. -- Chander Ganesan Open Technology Group, Inc. One Copley Parkway, Suite 210 Morrisville, NC 27560 919-463-0999/877-258-8987 http://www.otg-nc.com

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Training in Python for Science: NYC in May, Austin in June
by Janet Swisher 20 Apr '09

20 Apr '09

Enthought, Inc., is offering two upcoming open training classes on using Python for scientific computing: * Python for Science, Engineering, and Financial Analysis, New York City, May 18 to 21, 2009: http://www.enthought.com/training/python_nyc_0905.php * Introduction to Scientific Computing with Python, Austin TX, June 15 to 19, 2009: http://www.enthought.com/training/intro_to_sci_comp.php Both courses are intended for scientists, engineers, and financial analysts who want to effectively use Python for their day-to-day computational tasks. Programming experience with some language (e.g., C, C++, VB, Fortran, Matlab) is required; object-oriented programming skills are helpful but not required. Topics include: * Introduction to the Python * Array calculations with NumPy * Numeric algorithms with SciPy * Interfacing Python with other languages * 2D visualization with Matplotlib and Chaco See http://www.enthought.com/training/ for prices and details. -- Janet Swisher, swisher(a)enthought.com Enthought, Inc., http://www.enthought.com

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Elisa Media Center 0.5.36 Release
by Olivier Tilloy 20 Apr '09

20 Apr '09

Dear Python users, The Elisa team is happy to announce the release of Elisa Media Center 0.5.36, code-named "Surfin' Bird". 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 lightweight release, meaning it is pushed through our automatic plugin update system. Additionally a windows installer is available for download on our website. This installer fixes various crashers. As usual, for users running a version of Elisa >= 0.5.35, the upgrade to 0.5.36 should be done automatically via the plugin repository. As usual, tarballs are provided for distribution packagers. A complete list of the issues fixed can be found at: http://bugs.launchpad.net/elisa/+milestone/0.5.36 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 0.5.36 "Surfin' Bird" =========================== This is Elisa 0.5.36, thirty-sixth release of the 0.5 branch. Bugs fixed since 0.5.35: - 307692: [win32] Exotic characters in username prevent elisa from starting - 333925: Black screen without feedback when requesting to play a stream - 340450: [win32] gstreamer crashes while logging - 233724: Youtube plugin should show "most viewed today" and "top rated today" 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: - Anna Wojdel - Bruno Dilly - David McLeod - Florian Boucault - Guillaume Emont - Jesús Corrius - Lionel Martin - Loïc Molinari - Marc Garcia - Maxwell Young - Olivier Tilloy - Philippe Normand

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Python Training in San Diego (USENIX Technical Conference)
by David Beazley 20 Apr '09

20 Apr '09

Python Training Opportunities In San Diego at the 2009 USENIX Technical Conference June 14-15, 2009 http://www.usenix.org/events/usenix09/training/index.html I'm pleased to announce three Python tutorial sessions to be presented at the 2009 USENIX Technical Conference in San Diego. The Python Programming Language, June 14, 2009 (All Day) --------------------------------------------------------- This tutorial provides a comprehensive tour of the Python programming language and shows how it can be used to solve a variety of practical problems. The tutorial will illustrate important concepts through examples that primarily focus on data analysis, systems programming, and system administration. Introduction to Python Concurrency, June 15, 2009 (Morning) ----------------------------------------------------------- A overview of the state of concurrent programming in Python. Topics include threads, message passing, multiprocessing, asynchronous I/O, and coroutines. Python Generator Hacking, June 15, 2009 (Afternoon) --------------------------------------------------- Generators and generator expressions are among the most useful features of Python. Yet many Python programmers are unsure how to apply them to real-world problems. This tutorial presents practical uses of generators, including processing large data files, handling real-time data sequences, parsing, threads, networking, and distributed computing. More information about these courses and the USENIX Tech Conference is available at: http://www.usenix.org/events/usenix09 Hopefully, I'll see a few people in San Diego! Cheers, Dave -- David Beazley (http://www.dabeaz.com) Author "Python Essential Reference"

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Python Training in Chicago (last two weeks to register)
by David Beazley 20 Apr '09

20 Apr '09

Python Training Opportunities In Downtown Chicago May 11-15, 2009 http://www.dabeaz.com/chicago * * * Last Two Weeks to Register * * * Just a friendly reminder that there is still time to register for the two Python training classes I'm offering in Chicago next month. Come enjoy the beautiful Chicago spring weather and spend all of your time indoors getting your Python groove on! Introduction to Python, May 11-13, 2009 --------------------------------------- A comprehensive tour of the Python programming language and its most essential library modules. Even if you've already been programming Python, this class will fill in details, give you new insight, and teach you practical techniques that you can take home and apply to your own projects. Python Concurrency Workshop, May 14-15, 2009 -------------------------------------------- A one-of-a-kind workshop that covers everything you ever wanted to know about concurrent programming in Python, but were afraid to ask. Topics include threads, the new multiprocessing library, asynchronous I/O, coroutines, C extensions, and more. For good measure, the class will also touch upon other advanced topics including decorators, metaclasses, ctypes, and context-managers. Even if you're not writing concurrent programs, you'll walk away with new ideas on how to solve tricky programming problems and see some of Python's newest features in action. Further details including registration information is at: http://www.dabeaz.com/chicago Hopefully, I'll see you next month in Chicago! Cheers, Dave -- David Beazley (http://www.dabeaz.com) Author "Python Essential Reference"

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ANN: pyparsing 1.5.2 released!
by Paul McGuire 19 Apr '09

19 Apr '09

Well, it has been about 6 months since the release of pyparsing 1.5.1, and there have been no new functional enhancements to pyparsing. I take this as a further sign that pyparsing is reaching a development/ maturity plateau. With the help of the pyparsing community, there are some compatibility upgrades, and few bug fixes. The major news is compatibility with Python 3 and IronPython 2.0.1. Here is the high-level summary of what's new in pyparsing 1.5.2: - Removed __slots__ declaration on ParseBaseException, for compatibility with IronPython 2.0.1. Raised by David Lawler on the pyparsing wiki, thanks David! - Added pyparsing_py3.py module, so that Python 3 users can use pyparsing by changing their pyparsing import statement to: import pyparsing_py3 Thanks for help from Patrick Laban and his friend Geremy Condra on the pyparsing wiki. - Fixed bug in SkipTo/failOn handling - caught by eagle eye cpennington on the pyparsing wiki! - Fixed second bug in SkipTo when using the ignore constructor argument, reported by Catherine Devlin, thanks! - Fixed obscure bug reported by Eike Welk when using a class as a ParseAction with an errant __getitem__ method. - Simplified exception stack traces when reporting parse exceptions back to caller of parseString or parseFile - thanks to a tip from Peter Otten on comp.lang.python. - Changed behavior of scanString to avoid infinitely looping on expressions that match zero-length strings. Prompted by a question posted by ellisonbg on the wiki. - Enhanced classes that take a list of expressions (And, Or, MatchFirst, and Each) to accept generator expressions also. This can be useful when generating lists of alternative expressions, as in this case, where the user wanted to match any repetitions of '+', '*', '#', or '.', but not mixtures of them (that is, match '+++', but not '+-+'): codes = "+*#." format = MatchFirst(Word(c) for c in codes) Based on a problem posed by Denis Spir on the Python tutor list. - Added new example eval_arith.py, which extends the example simpleArith.py to actually evaluate the parsed expressions. Download pyparsing 1.5.2 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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ANN: Mock 0.5.0 Release
by Fuzzyman 19 Apr '09

19 Apr '09

Mock 0.5.0 has just been released. * Mock Homepage http://www.voidspace.org.uk/python/mock/ * Download Mock 0.5.0 release (zip) http://www.voidspace.org.uk/downloads/mock-0.5.0.zip * Mock Documentation as a PDF http://www.voidspace.org.uk/downloads/mock.pdf * Mock entry on PyPI http://pypi.python.org/pypi/mock/ * Repository and Issue Tracker on Google Code http://code.google.com/p/mock/ This *isn't* backwards compatible as it cleans up the API in a few ways, but they're all good changes I promise. One of the new features is that the Mock class now supports wrapping objects; using the ``wraps`` keyword. Mock is a library for the creation of simple mock objects that track how they are used so that you can make assertions. It uses the action - > assertion pattern rather than the record -> replay pattern. Action - > assertion puts your tests after you have used the objects, which seems more natural and means that you can make assertions about only the behavior you are interested in. Mock also contains two decorators (``patch`` and ``patch_object``) which make it easy to safely mock out dependencies in the module under test purely within the scope of the test itself (unpatching is done automatically on exit whether or not the test passes). One of the changes in this release is that these decorators also become context managers allowing them to be used with the 'with statement'. Mock can be installed with: ``easy_install mock`` The changelog for all changes in this release is: * Made DEFAULT part of the public api. * Documentation built with Sphinx. * ``side_effect`` is now called with the same arguments as the mock is called with and if returns a non-DEFAULT value that is automatically set as the ``mock.return_value``. * ``wraps`` keyword argument used for wrapping objects (and passing calls through to the wrapped object). * ``Mock.reset`` renamed to ``Mock.reset_mock``, as reset is a common API name. * ``patch`` / ``patch_object`` are now context managers and can be used with ``with``. * A new 'create' keyword argument to patch and patch_object that allows them to patch (and unpatch) attributes that don't exist. (Potentially unsafe to use - it can allow you to have tests that pass when they are testing an API that doesn't exist - use at your own risk!) * The methods keyword argument to Mock has been removed and merged with spec. The spec argument can now be a list of methods or an object to take the spec from. * Nested patches may now be applied in a different order (created mocks passed in the opposite order). This is actually a bugfix. * patch and patch_object now take a spec keyword argument. If spec is passed in as 'True' then the Mock created will take the object it is replacing as its spec object. If the object being replaced is a class, then the return value for the mock will also use the class as a spec. * A Mock created without a spec will not attempt to mock any magic methods / attributes (they will raise an ``AttributeError`` instead). Many thanks to all those who gave feedback, feature requests and patches! What *isn't* in 0.5.0 is support for mocking magic methods. I do have a technique in mind for this, which I implemented for the container methods. It is very clean, but different from the pattern used to mock out other methods. As I'm not currently using it I'm going to wait until I need it and see if it works well in practise. If you're interested in trying it, the code (with full documentation) in a 'magics branch': * http://code.google.com/p/mock/source/browse/#svn/branches/magics

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[ANN] pyxser-0.2r --- Python XML Serialization
by Daniel Molina Wegener 19 Apr '09

19 Apr '09

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 Hello, I'm pleased to announce pyxser-0.2r, a Python-Object to XML serializer and deserializer. This package it's completly written in C and licensed under LGPLv3. The tested Python versions are 2.5.X and 2.6.X. * home page: http://coder.cl/software/pyxser * hosted at: https://sourceforge.net/projects/pyxser/ The current ChangeLog is as follows: 0.2r (2009.04.18): Daniel Molina Wegener <dmw(a)coder.cl> * Removed memory leaks concerning libxml2 usage. * Removed memory leaks concerning Python C/API usage. * Improved fault detection. * Improved pointer checking deallocations. * Added unit test test-utf8-prof.py with 50.000 cilces ;) * Every serilization is made into unicode objects. Feel free to use and test. You can modify test-utf8-prof.py to use more than 50.000 cicles depending on your libxml2 version. Best regards, - -- .O. | Daniel Molina Wegener | FreeBSD & Linux ..O | dmw [at] coder [dot] cl | Open Standards OOO | http://coder.cl/ | FOSS Developer -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (FreeBSD) iQIcBAEBCgAGBQJJ6r9KAAoJEHxqfq6Y4O5NP7IQAM87ngHCTEMabwP7CgdPWjcH thCkhdWVr+ri6L9HRZfKel8dhG1MharBWCBJjrPH+NA0aV03g0Rk2gw69DPJ3HuF WsLx8jI0NQEGI4nYHPmP8tq+A7r2iI/3UHz9HL2rMMxpHbn/Jzcsidtf8irffLhQ XBzyMpfhS6HaAJxmRY1SxbgFiim5egvfo0kQ+ywgmDKLs6tbaJLOpdeYBFZMLCzQ Q6UAdQZf7yN+zqNWuL3tW+Bp4nJZP1BqCXXpiT6U69TmBtnM5SzrHjBzEUEGycDd xDkszjRBU/k159dLbsItC50VhdfBdrcHK/FPS+4oPrdUkIH2Ue/l2/OekxFXKI7X DlcqnYqECskzIyQeaaR0DOXeO8nq8LJVU2Sg3kXlsddTLY+f2cdp7IvQ6e1krynA U/2KMiXYqyMe1VtxyPzp7W/yrFJa7yWrPXQtBrPnUsiYIjD08XH/C+DOdPN65nTG NFL7Hulz4toJYz29G3CCsUgObQ2XrMG2iY361pe/lNuoW7GcFF5leiKBHInFIEit Kz7owCGfpAN4jXtAQRYpfnqIM2M+ixgKbMLrzds5tCByeOixlfBVJveeko5csLRV IXyQgDHJaFXU9w0oXdFSE9r2nbIE100iuYyaX8kP98HFbHnEL6cq7Cw4pA0eSn2Y jU0mjTQJDW2ic2zyZvte =sDDJ -----END PGP SIGNATURE-----

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