Python-announce-list August 2009

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58 participants
75 discussions

[ANN] pyxser-1.2r --- Python-Object to XML serialization module
by Daniel Molina Wegener 23 Aug '09

23 Aug '09

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 Hello, I'm pleased to announce pyxser-1.2r, a Python-Object to XML serializer and deserializer. This module package it's completely written in C and licensed under LGPLv3. The tested Python versions are 2.5.X and 2.7.X. * home page: http://coder.cl/software/pyxser * hosted at: http://sourceforge.net/projects/pyxser/ * pypi entry: http://pypi.python.org/pypi?:action=display&name=pyxser&version=1.2r The current ChangeLog is as follows: - -----8<----------8<----------8<----------8<----- 1.2r (2009.08.23): Daniel Molina Wegener <dmw(a)coder.cl> * Added encoded serialization of Unicode strings by using the user defined encoding as is passed to the serialization functions as enc parameter * Refactored some functions to allow more ordered code. - -----8<----------8<----------8<----------8<----- As you see, now Unicode strings are serialized as encoded byte string by using the encoding that the user pass as enc parameter to the serialization function. This means that Unicode strings are serialized in a human readable form, regarding a better interoperability with other platforms. 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) iQIcBAEBCgAGBQJKkW+JAAoJEHxqfq6Y4O5N6tYP/j6ZDRCroq+hQGiu95LhCDBI Vz8eNFTDWNbpEhLAe0elh0YSHFLjdPFHcqrYS6UOHIYJ1HK/XP+Eu7jyczGHG535 PIICtgmac3XAJYrvelW0FbZHLTI8y9uZWgJFfbt7ijnqMaVw3+WfZUnr3A5OzKIQ Uj3l5Q20SFNNjCr0MXCrjQNbEFNhuGX7gcKBiPDmt9JrXV11NImJ6+TvE12wsvY+ 9VvRRs/psQNx8lERNRDmUetUYLY8ISRSr0FU5L+keaCJBSokmz+Cr4MSOHALM5CV 9OItjEuJoZCGw/ojDUz1V4lemIHjf5pJHtlDV8BDxC/E+WAErFqehaRDjwU9JUt4 kzqafjIjVhKonPjk1GXNX/5Rsd4OMafSYACNlZPNOLyUvBZ7l+MXzCGL9yhnWq2I yAv06tAJ+uNxA/zn3Qeqm9ADlCX3ZvSxhbVsuWWv/H3GKMkjVPCJ7his1KCV4ctN 33BN0ApigMwfP7jxjJ6ua1tql4bn4vUiPLvKYNWOedmT1hwTWSIMxPQBfsZOPuCo 09auJr3PLg8qLKmuZtO3gqQ4++ViY1L0cdi2EQnlSwDtFCRDnc5epFgzc4A5qlac dT5JNXxh9W5nXv8kHLmNey9iWPLkDRO7MdKOK88C6q/rT7k2nIBOLwNn27gnoa01 DTW45uIN5zAUpSmDsOha =Lc7e -----END PGP SIGNATURE-----

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Python-URL! - weekly Python news and links (Aug 23)
by Gabriel Genellina 23 Aug '09

23 Aug '09

QOTW: "... [O]nce you accept that text is best handled in Unicode, there's little sense in making an exception for the limited subset that happens to be representable in ASCII." - Ben Finney http://groups.google.com/group/comp.lang.python/msg/accc8c2ae9d7ed15 Python 3.1.1 released: http://groups.google.com/group/comp.lang.python/t/f34c4b07a61f4414/ Parallelization in Python 2.6: http://groups.google.com/group/comp.lang.python/t/c8169c393e58a5d5/ 012=3D=3D10, a relic from ancient times, is finally gone: http://groups.google.com/group/comp.lang.python/t/3bc42fffb012635b/ How to ensure a method is actually implemented in a derived class: http://groups.google.com/group/comp.lang.python/t/42d0ec54b7683f23/ Is this community sexist? (Also, etymology of the word "guy" < "Guy" ~ "Guido") http://groups.google.com/group/comp.lang.python/t/7a190c24d8025bb4/ A "for" loop using range() is inefficient, but other Python variants are able to optimize it: http://groups.google.com/group/comp.lang.python/t/27df793be6f5675/ The scope of names inside a "class" statement: http://groups.google.com/group/comp.lang.python/t/4a244346dc9a5f15/ Counting how many times items from a set appear on a given list: http://groups.google.com/group/comp.lang.python/t/fb0580cefff96682/ Construct a dictionary from a list [key,value,key,value,...] (many recipes!): http://groups.google.com/group/comp.lang.python/t/e16e180b5f61f748/ And more recipes: format a number with thousand separators: http://groups.google.com/group/comp.lang.python/t/2eb729797f162a6e/ Code style: how to write a long conditional expression: http://groups.google.com/group/comp.lang.python/t/6876917a4d579d59/ On the concept of "functor" and how it may be applied to Python: http://groups.google.com/group/comp.lang.python/t/8fbc7ad2ec11841c/ ======================================================================== 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 enthusiasts": 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/ 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 Enjoy the *Python Magazine*. http://pymag.phparch.com/ *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] PyIMSL Studio 1.5 released
by Steve Lang 21 Aug '09

21 Aug '09

Visual Numerics, a Rogue Wave Software Company, is pleased to announce the release of PyIMSL Studio V1.5. PyIMSL Studio contains both open source and proprietary components that create a fully supported and documented platform for analytic prototyping and production development. - For prototyping, a number of open source tools including Python, NumPy, Eclipse, matplotlib and commercial components from Visual Numerics, Inc. are available for Python, including PyIMSL Python wrappers to the mathematics and statistics algorithms in the IMSL C Library. This combination of tools provides a rich environment for prototype development. - For production deployment, PyIMSL Studio includes the IMSL C Library. Other I/O and data filtering components are available in both Python and C to further support deployment. Using the IMSL C Library provides parity between prototype and production code. This new release offers: - Support for IMSL C Library V7.0 which provides access to: - Numerous parallelized algorithms - New function that solves the generalized Feynman-Kac PDE and Black-Scholes problems - New data mining functions including a Genetic Algorithm for optimization and Naïve Bayes for classification problems and text mining - Many other new functions, including Kochanek-Bartels Cubic Splines, Non-central chi-square, and Non-central student's T PDFs - A more seamless installation process so you can get started with PyIMSL Studio faster and easier Learn more about PyIMSL Studio and request a free evaluation at http://www.vni.com/pyimslstudio

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Pydev 1.4.8 Released
by Fabio Zadrozny 21 Aug '09

21 Aug '09

Hi All, Pydev and Pydev Extensions 1.4.8 have been released Details on Pydev Extensions: http://www.fabioz.com/pydev Details on Pydev: http://pydev.sf.net Details on its development: http://pydev.blogspot.com Release Highlights in Pydev Extensions: ----------------------------------------------------------------- * Created public API for starting/finishing debug server * Import based on unresolved variables works correctly when the document is changed * Ignore error works correctly when the document is changed * No longer showing the replace button for the search Release Highlights in Pydev: ---------------------------------------------- * Debugger can jump to line * Reloading module when code changes in the editor if inside debug session * Usability improvement on the preferences pages (editor, code-formatter, comment block and code-style showing examples) * Pythonpath reported in the main tab was not correct for ironpython launch configs * Main module tab in launch configuration was not appearing for jython * Multiline block comments considering the current indentation (and working with tabs) * Hover works correctly when the document is changed * The interactive console no longer uses the UI thread (so, it doesn't make eclipse halt anymore on slow requests to the shell) * The interactive console save history now saves the contents in the same way they're written * When creating a python run, the classpath was being set (and overridden), which should only happen in jython runs * Fixed issue where a line with only tabs and a close parenthesis would have additional tabs entered on code-formatting * A Pydev (Jython) project can coexist with a JDT project (and properly use its info -- only project references worked previously) * Many small usability improvements (editors improved) * Verbosity option added to run as unit-test * No longer using respectJavaAccessibility=False for jython * When there are too many items to show in the debugger, handle it gracefully What is PyDev? --------------------------- PyDev is a plugin that enables users to use Eclipse for Python, Jython and Iron Python development -- making Eclipse a first class Python IDE -- It comes with many goodies such as code completion, syntax highlighting, syntax analysis, refactor, debug and many others. Cheers, -- Fabio Zadrozny ------------------------------------------------------ Software Developer Aptana http://aptana.com/python Pydev Extensions http://www.fabioz.com/pydev Pydev - Python Development Environment for Eclipse http://pydev.sf.net http://pydev.blogspot.com

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PyCon Argentina 2009
by Gabriel Genellina 21 Aug '09

21 Aug '09

PyCon Argentina 2009 - Buenos Aires - September 4-5th. The first national Python conference in Argentina "PyCon Argentina 2009", also the first PyCon at a Spanish-speaking country, will be held on Buenos Aires next month. There are more than 30 programmed talks covering many different subjects, short lightning talks, and two special speakers: Collin Winter (Unladen Swallow) and Jacob Kaplan-Moss (Django). Attendance is free of charge but advance registration is required. For more information, see http://ar.pycon.org/ Original press release, in Spanish (official PyCon Argentina language): Durante los días 4 y 5 de Septiembre de 2009 tendrá lugar en la Ciudad de Buenos Aires el primer evento a nivel nacional dedicado al lenguaje de programación Python, PyCon Argentina 2009. La conferencia PyCon se viene realizando en otros países del mundo (Estados Unidos desde 2003, Inglaterra, Brasil, Italia, etc.), siendo ésta la primera vez que se realiza en un país de habla hispana. Contará con la presencia de Jacob Kaplan-Moss y Collin Winter, entre otras personalidades del mundo Python. La temática de las charlas es variada, pensando tanto en programadores novatos que apenas conocen Python (o nunca tuvieron contacto con el lenguaje hasta ahora), como en desarrolladores avanzados que buscan lo último de esta tecnología. Es de interés también para bloggers, autores y diseñadores web; gerentes, administradores y emprendedores; científicos, ingenieros, curiosos y todo aquel que tenga ganas de acercarse a la comunidad Python en Argentina, PyAr. El evento será en la sede de la Universidad de Belgrano, Zabala 1837. La organización corre por cuenta de voluntarios de la comunidad local de usuarios. La asistencia a la conferencia es gratuita pero se requiere inscripción previa. Para más información, visitar http://ar.pycon.org/ Acerca de Python Python es un lenguaje de programación dinámico y orientado a objetos que puede ser usado para desarrollar aplicaciones de múltiples tipos. Permite integrar fácilmente otros lenguajes y herramientas, incluye una amplia biblioteca de funciones y es sencillo de aprender. Muchos programadores Python reconocen un sustancial aumento en su productividad y sienten que el lenguaje mismo los incentiva al desarrollo de código de mayor calidad y más fácil de mantener. Está disponible en múltiples plataformas, desde una PC con Windows o Linux hasta teléfonos celulares, y muchos sitios de Internet utilizan Python como soporte de sus servicios. Para más información, visitar http://www.python.org/ Acerca de PyAr PyAr es la comunidad local de usuarios de Python que nuclea a todos los interesados en este lenguaje en la Argentina. Pretende llegar a usuarios y empresas, promover el uso del lenguaje, intercambiar información, compartir experiencias y, en general, ser el marco de referencia local en el uso y difusión de esta tecnología. Para más información, visitar http://python.org.ar/pyar/ -- Gabriel Genellina

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Wing IDE 3.2 released
by Wingware 20 Aug '09

20 Aug '09

Hi, Wingware has released version 3.2.0 final of Wing IDE, our integrated development environment for the Python programming language. *Release Highlights* This release includes the following new features: * Support for Python 3.0 and 3.1 * Rewritten version control integration with support for Subversion, CVS, Bazaar, git, Mercurial, and Perforce (*) * Added 64-bit Debian, RPM, and tar file installers for Linux * File management in Project view (**) * Auto-completion in the editor obtains completion data from live runtime when the debugger is active (**) * Perspectives: Create and save named GUI layouts and optionally automatically transition when debugging is started (*) * Improved support for Cython and Pyrex (*.pyx files) * Added key binding documentation to the manual * Added Restart Debugging item in Debug menu and tool bar (**) (*)'d items are available in Wing IDE Professional only. (**)'d items are available in Wing IDE Personal and Professional only. The release also contains many other minor features and bug fixes; see the change log for details: http://wingware.com/pub/wingide/3.2.0/CHANGELOG.txt *Downloads* Wing IDE Professional and Wing IDE Personal are commercial software and require a license to run. A free trial license can be obtained directly from the product when launched. Wing IDE 101 can be used free of charge. Wing IDE Pro 3.2.0 http://wingware.com/downloads/wingide/3.2 Wing IDE Personal 3.2.0 http://wingware.com/downloads/wingide-personal/3.2 Wing IDE 101 3.2.0 http://wingware.com/downloads/wingide-101/3.2 *About Wing IDE* Wing IDE is an integrated development environment for the Python programming language. It provides powerful debugging, editing, code intelligence, testing, version control, and search capabilities that reduce development and debugging time, cut down on coding errors, and make it easier to understand and navigate Python code. Wing IDE is available in three product levels: Wing IDE Professional is the full-featured Python IDE, Wing IDE Personal offers a reduced feature set at a low price, and Wing IDE 101 is a free simplified version designed for teaching entry level programming courses with Python. System requirements are Windows 2000 or later, OS X 10.3.9 or later for PPC or Intel (requires X11 Server), or a recent Linux system (either 32 or 64 bit). Wing IDE 3.2 supports Python versions 2.0.x through 3.1.x. *Purchasing and Upgrading* Wing 3.2 is a free upgrade for all Wing IDE 3.0 and 3.1 users. Any 2.x license sold after May 2nd 2006 is free to upgrade; others cost 1/2 the normal price to upgrade. Upgrade a 2.x license: https://wingware.com/store/upgrade Purchase a 3.x license: https://wingware.com/store/purchase -- The Wingware Team Wingware | Python IDE Advancing Software Development www.wingware.com

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[ANN] Pyjamas 0.6 Web Widget Set and python-to-javascript Compiler released
by Luke Kenneth Casson Leighton 18 Aug '09

18 Aug '09

Pyjamas 0.6 is finally out: many thanks to everyone who has contributed. Special thanks to Kees Bos; Bernd, Bernd and Jurgen from LovelySystems.com; the people who showed an interest in Pyjamas at EuroPython 2009; and especially to everyone who has helped during the pre-releases, with testing and bugreports over the past few weeks. For a full list of contributors, see CREDITS. Downloads: --------- http://code.google.com/p/pyjamas/downloads http://pypi.python.org/pypi/Pyjamas http://sf.net/projects/pyjamas Pyjamas ------- Pyjamas is a port of Google Web Toolkit to Python, and thus enables the development of Rich Media AJAX applications in Python, with no need for special browser plugins. Pyjamas contains a stand-alone python-to-javascript compiler, and also a Widget Set API that looks very similar to Desktop Widget Set APIs (such as PyQT4 or PyGTK2). For more information, see: http://pyjs.org http://pyjs.org/FAQ.html http://pyjs.org/features.html Known bugs: http://code.google.com/p/pyjamas/issues #227, #228, #229, #230 and #232 Pyjamas-Desktop --------------- Pyjamas runs your application in a Web Browser (as javascript); Pyjamas-Desktop runs exactly the same python application on the Desktop (as python) http://pyjd.org Release 0.6 of Pyjamas also incorporates Pyjamas-Desktop directly into the Pyjamas Distribution. To use Pyjamas-Desktop there are three choices, with more planned [MacOSX PyObjC; KDE's PyKHTML]. 1) - XULRunner install hulahop and python-xpcom. hulahop is distributed with both Debian and Ubuntu; python-xpcom is part of XULRunner and is also distributed with both Debian and Ubuntu. Other users should investigate the installation instructions for python-xpcom and hulahop for the operating system of their choice on the appropriate web sites. GNU/Linux, FreeBSD and other POSIX systems are strongly advised to use XULRunner for Pyjamas-Desktop: it is the most stable of the PyJD ports. 2) - PyWebKitGtk you will need a patched version of pywebkitgtk: http://code.google.com/p/pywebkitgtk/issues/detail?id=13 you will need a patched version of webkit: http://github.com/lkcl/webkit/16401.master Detailed build instructions are available here: http://wiki.github.com/lkcl/webkit/helping-with-16401master 3) - MSHTML (experimental!) For Windows users, all that's required, other than installing python and Internet Explorer, is one further package: Win32 "comtypes". Win32 "comtypes" can be downloaded here: * http://sourceforge.net/projects/comtypes/ The MSHTML version primarily works. Reports using IE8's MSHTML engine would be appreciated. Known bugs: the use of Tab to cycle through Keyboard Focus elements is ineffective; onkeyup and onkeydown events are unresponsive, but oddly onkeypress event handling works.

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xlutils 1.4.0 released!
by Chris Withers 18 Aug '09

18 Aug '09

Hi All, I'm pleased to announce a new release of xlutils. This is a small collection of utilities that make use of both xlrd and xlwt to process Microsoft Excel files. The changes for this release are as follows: - Add sheet density information and onesheet option to xlutils.margins. - Reduced the memory footprint of xlutils.filter.ColumnTrimmer at the expense of speed. - Fixed incorrect warnings about boolean cells in xlutils.filter.ErrorFilter. xlwt has always supported boolean cells. - xlutils.filter.BaseReader now opens workbooks with on_demand = True - Added support for xlrd Books opened with on_demand as True passed to open_workbook. - Fixed bug when copying error cells. - Requires the latest versions of xlrd (0.7.1) and xlwt (0.7.2). To find out more, please read here: http://www.simplistix.co.uk/software/python/xlutils In case you're not aware, xlrd and xlwt are two excellent pure-python libraries for reading and writing Excel files. They run on any platform and, likely, any implementation of Python without the need for horrific things like binding to Excel via COM and so needing a Windows machine. If you use any of xlrd, xlwt or xlutils, the following google group will be of use: http://groups.google.com.au/group/python-excel Hope some of this is of interest, I'd love to hear from anyone who ends up using it! cheers, Chris -- Simplistix - Content Management, Zope & Python Consulting - http://www.simplistix.co.uk

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[ANN] BleachBit 0.6.1
by Andrew Ziem 17 Aug '09

17 Aug '09

BleachBit deletes junk to free disk space and cleans trace files to maintain privacy. Notable changes for 0.6.1: * Wipe free disk space to hide previously-deleted files * Clears Nautilus usage history * Vacuums gPodder and clears its cache * Vacuums Yum * Cleans inactive Yum repositories * Fix several bugs * Adds translations for Croatian, Korean, Ukranian, and Thai * Updates 18 other translations Detailed release notes http://bleachbit.blogspot.com/2009/08/bleachbit-061-released.html Download for Linux, Windows, and source code http://bleachbit.sourceforge.net/download

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[ANNOUNCE] PyGtkSourceView 2.7.0 - unstable
by Gian Mario Tagliaretti 17 Aug '09

17 Aug '09

I am pleased to announce version 2.7.0 of the Gtksourceview Python bindings. Once the mirrors have sync correctly it will be available at: http://ftp.gnome.org/pub/GNOME/sources/pygtksourceview/2.7/ The bindings are updated with the new Gtksourceview API News in 2.7.0 ============= o Add new 2.8.0 gtksourceview API. (Gian Mario) o Some misc bug fix (Gian Mario) o Fix build with libtool 2.x. (Gian Mario) o Autogenerate Changelog from git logs (Gian Mario) 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 2.7.3 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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Python-announce-list August 2009