Mailman 3 May 2009 - Python-announce-list

"conferences" new mailing list created
by David Goodger 22 May '09

22 May '09

The conferences(a)python.org mailing list is for open discussion of issues related to Python conferences. All conferences are welcome: established and planned, worldwide. The archive is open to all. Subscribe here: http://mail.python.org/mailman/listinfo/conferences Please spread the word to conference mailing lists and to anyone who would be interested. David Goodger PyCon 2009 Chair

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cx_Oracle 5.0.2
by Anthony Tuininga 22 May '09

22 May '09

What is cx_Oracle? cx_Oracle is a Python extension module that allows access to Oracle and conforms to the Python database API 2.0 specifications with a few exceptions. Where do I get it? http://cx-oracle.sourceforge.net What's new? 1) Fix creation of temporary NCLOB values and the writing of NCLOB values in non Unicode mode. 2) Re-enabled parsing of non select statements as requested by Roy Terrill. 3) Implemented a parse error offset as requested by Catherine Devlin. 4) Removed lib subdirectory when forcing RPATH now that the library directory is being calculated exactly in setup.py. 5) Added an additional cast in order to support compiling by Microsoft Visual C++ 2008 as requested by Marco de Paoli. 6) Added additional include directory to setup.py in order to support compiling by Microsoft Visual Studio was requested by Jason Coombs. 7) Fixed a few documentation issues.

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Python-URL! - weekly Python news and links (May 22)
by Gabriel Genellina 22 May '09

22 May '09

QOTW: "Floating point is sort of like quantum physics: the closer you look, the messier it gets." - Grant Edwards The circular relationship between object and type explained: http://comments.gmane.org/gmane.comp.python.general/623460 Floating point numbers don't behave exactly like "normal", real numbers: http://groups.google.com/group/comp.lang.python/t/3c78637de989d352/ Java vs. Python: Performance comparison http://groups.google.com/group/comp.lang.python/t/29ed8f4cd209f833/ The 'in' operator calls __getitem__ in some cases: http://groups.google.com/group/comp.lang.python/t/e1841f61a7194673/ The Planet Python RSS feed is now available for purchase through the Kindle platform! Don't worry, any profits go to the Python Software Foundation. A new syntax proposal: adding support for parallel code execution: http://groups.google.com/group/comp.lang.python/t/fd41d1ed79067d04/ Libraries that strictly implement the DOM are usually "unpythonic": http://groups.google.com/group/comp.lang.python/t/6b8d8fe1a6f4eab6/ PEP 384: Defining a Stable ABI http://groups.google.com/group/comp.lang.python/t/bb75e3a77b9845a7/ Sometimes it's useful to be able to "push back" an item into an iterator: http://groups.google.com/group/comp.lang.python/t/52f753e338b13390/ ... but resetting an iterator isn't always feasible: http://groups.google.com/group/comp.lang.python/t/fc1dea1f72dbcd97/ ======================================================================== 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/ 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 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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Join us for "Scientific Computing with Python Webinar"
by Travis Oliphant 21 May '09

21 May '09

[re-sent plaintext by aahz(a)python.org for c.l.py.announce] Hello all Python users: I am pleased to announce the beginning of a free Webinar series that discusses using Python for scientific computing. Enthought will host this free series which will take place once a month for 30-45 minutes. The schedule and length may change based on participation feedback, but for now it is scheduled for the fourth Friday of every month. This free webinar should not be confused with the EPD webinar on the first Friday of each month which is open only to subscribers to the Enthought Python Distribution. I (Travis Oliphant) will be the first speaker at this continuing series. I plan to present a brief (10-15) minute talk on reading binary files with NumPy using memory mapped arrays and structured data-types. This talk will be followed by a demonstration of Chaco for interactive 2-d visualization and Mayavi for interactive 3-d visualization. Both Chaco and Mayavi are open-source tools and part of the Enthought Tool Suite. They can be conveniently installed using the Enthought Python Distribution. Topics for future webinars will be chosen later based on participant feedback. This event will take place on Friday at 3:00pm CDT and will last 30 to 45 minutes depending on questions asked. Space is limited at this event. If you would like to participate, please register by going to https://www1.gotomeeting.com/register/422340144 or by clicking on the appropriate link in the attached announcement. There will be a 10 minute technical help session prior to the on-line meeting which you should plan to use if you have never participated in a GoToWebinar previously. During this time you can test your connection and audio equipment as well as familiarize yourself with the GoTo Meeting software. I am looking forward to interacting with many of you this Friday. Best regards, Travis Oliphant Enthought, Inc. Enthought is the company that sponsored the creation of SciPy and the Enthought Tool Suite. It continues to sponsor the SciPy community by hosting the SciPy mailing list and website and participating in the development of SciPy and NumPy. Enthought creates custom scientific and technical software applications and provides training on using Python for technical computing. Enthought also provides the Enthought Python Distribution. Learn more at http://www.enthought.com Travis Oliphant's bio can be read at http://www.enthought.com/company/executive-team.php > Scientific Computing with Python Webinar > > Each webinar in this continuing series will demonstrate the use of > some aspect of Python to assist with scientific, engineering, and > technical computing. Enthought will host each meeting and select a > specific topic based on feedback from participants > Register for a session now by clicking a date below: > Fri, May 22, 2009 3:00 PM - 3:30 PM CDT > Fri, Jun 19, 2009 1:00 PM - 1:30 PM CDT > Fri, Jul 17, 2009 1:00 PM - 1:30 PM CDT > Once registered you will receive an email confirming your registration > with information you need to join the Webinar. > System Requirements > PC-based attendees > Required: Windows? 2000, XP Home, XP Pro, 2003 Server, Vista > Macintosh?-based attendees > Required: Mac OS? X 10.4 (Tiger?) or newer

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boxee app dev challenge (Python-based API)
by avner (＠boxee) 20 May '09

20 May '09

we launched a Python-based API for boxee, and to help promote it we announced a Dev Challenge with Sony Bravia XBR9 46″ and Drobo with 4TB of storage as prizes. you can learn more here http://blog.boxee.tv/

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Pydev 1.4.6 Released
by Fabio Zadrozny 20 May '09

20 May '09

Hi All, Pydev and Pydev Extensions 1.4.6 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: ----------------------------------------------------------------- * Auto-import for from __future__ import with_statement will add a 'with' token instead of a with_statement token * Globals browser improved (only for Eclipse 3.3 onwards, older versions will have the old interface): o Can filter with working sets o Can match based on module names. E.g.: django.A would match all the django classes/methods/attributes starting with 'A' Release Highlights in Pydev 1.4.6: ---------------------------------------------- * Google App Engine: customized setup and management of Google App Engine projects * String substitution variables can be used for pythonpath and launch config. * The interpreter can be referred from a user-editable name * Submodules shown on import completion (e.g.: from x|<-- request completion here will show xml, xml.dom, xml.etree, etc) * os.path added to default forced builtins * Showing better errors when code-completion fails * Fixed problem finding definition for java class when the constructor was referenced. * Fixed recursion error on Python 3.0 grammar * Jython debugger - local variables are properly updated * Multiple forced builtins can be added/removed at once * Python 2.6 grammar: kwarg after unpacking arg list * Python 3.0 grammar: star expr on for * Fixed problem on code-completion when file is not in the workspace (SystemASTManager cannot be cast to ASTManager) * Not throwing IllegalCharsetNameEx on illegal encoding declaration anymore (patch by Radim Kubacki) * __future__ imports are always added/reorganized as the 1st import in the module * Code-completion in Jython recognizes that a method get/setName should be available as a 'name' property. * Finding 'objects' for django * Pydev Package Explorer o Added filter for the python nodes o Showing configuration errors o Showing the interpreter info What is PyDev? --------------------------- PyDev is a plugin that enables users to use Eclipse for Python and Jython 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 Enviroment for Eclipse http://pydev.sf.net http://pydev.blogspot.com

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Announcing IronPython 2.6 CTP for .NET 4.0 Beta 1
by Dave Fugate 20 May '09

20 May '09

Hello Python Community, We're quite pleased to announce the release of "IronPython 2.6 CTP for .NET 4.0 Beta 1". This is our second preview of IronPython running under the Dynamic Language Runtime that is built directly into a .NET 4.0 release! As before, this release allows you to use IronPython objects and types as .NET 4.0 dynamic objects from within C# and Visual Basic code. While this release does share a bit in common with the upcoming IronPython 2.6 Beta 1 release (e.g., a number of MSI improvements), the core functionality is essentially that of IronPython 2.6 Alpha 1. Please also note that "IronPython 2.6 CTP for .NET 4.0 Beta 1" will run only under .NET 4.0 Beta 1. Here's a small example showing just how powerful the new dynamic feature is for taking advantage of dynamic language functionality in statically typed languages: <mock.py> import random, math class Mock(object): def __getattr__(self, key): """Mock objects of this type will dynamically implement any requested member""" return random.choice(["hello world", math.pi]) </mock.py> <dynamic_demo.cs> using System; using IronPython.Hosting; using Microsoft.Scripting.Hosting; public class dynamic_demo { static void Main() { var ipy = Python.CreateRuntime(); dynamic mock = ipy.UseFile("mock.py"); dynamic m = mock.Mock(); //The Python Mock type dynamically implements any member that is requested of it System.Console.WriteLine(m.the_csharp_compiler_cannot_possbily_know_this_member_exists_at_compile_time); } } <dynamic_demo.cs> To try out this preview release: 1. Install some variant of .NET 4.0 Beta 1 or Visual Studio 2010 Beta 1. E.g., http://www.microsoft.com/downloads/details.aspx?FamilyID=ee2118cc-51cd-46ad… 2. Install IronPython.msi from http://ironpython.codeplex.com/Release/ProjectReleases.aspx?ReleaseId=27320 3. Follow any of the many dynamic walkthroughs online. http://blogs.msdn.com/vbteam/archive/2008/12/17/walkthrough-dynamic-program… would be a good start Have fun! The IronPython Team

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EPD 4.3.0 released
by Ilan Schnell 20 May '09

20 May '09

I am pleased to announce that EPD (Enthought Python Distribution) version 4.3.0 has been released. You may find more information about EPD, as well as download a 30 day free trial here: http://www.enthought.com/products/epd.php You can check out the release notes here: https://svn.enthought.com/epd/wiki/Py25/4.3.0/RelNotes The main point of this release was to update NumPy and SciPy to the latest versions and to introduce the ability to install, update and rollback packages using our package repository (for basic and above subscribers only, please contact us for username and password). About EPD --------- The Enthought Python Distribution (EPD) is a "kitchen-sink-included" distribution of the Python Programming Language, including over 80 additional tools and libraries. The EPD bundle includes NumPy, SciPy, IPython, 2D and 3D visualization, database adapters, and a lot of other tools right out of the box. http://www.enthought.com/products/epdlibraries.php It is currently available as a single-click installer for Windows XP and Vista (x86), Mac OS X (a universal binary for OS X 10.4 and above), RedHat 3, 4 and 5 (x86 and amd64), as well as Solaris 10 (x86). EPD is free for academic use. An annual subscription including installation support is available for individual and commercial use. Additional support options, including customization, bug fixes and training classes are also available: http://www.enthought.com/products/support_level_table.php - Ilan

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Join us for "Scientific Computing with Python Webinar"
by Travis Oliphant 20 May '09

20 May '09

Hello all Python users: I am pleased to announce the beginning of a free Webinar series that discusses using Python for scientific computing. Enthought will host this free series which will take place once a month for 30-45 minutes. The schedule and length may change based on participation feedback, but for now it is scheduled for the fourth Friday of every month. This free webinar should not be confused with the EPD webinar on the first Friday of each month which is open only to subscribers to the Enthought Python Distribution. I (Travis Oliphant) will be the first speaker at this continuing series. I plan to present a brief (10-15) minute talk on reading binary files with NumPy using memory mapped arrays and structured data- types. This talk will be followed by a demonstration of Chaco for interactive 2-d visualization and Mayavi for interactive 3-d visualization. Both Chaco and Mayavi are open-source tools and part of the Enthought Tool Suite. They can be conveniently installed using the Enthought Python Distribution. Topics for future webinars will be chosen later based on participant feedback. This event will take place on Friday at 3:00pm CDT and will last 30 to 45 minutes depending on questions asked. Space is limited at this event. If you would like to participate, please register by going to https://www1.gotomeeting.com/register/422340144 or by clicking on the appropriate link in the attached announcement. There will be a 10 minute technical help session prior to the on-line meeting which you should plan to use if you have never participated in a GoToWebinar previously. During this time you can test your connection and audio equipment as well as familiarize yourself with the GoTo Meeting software. I am looking forward to interacting with many of you this Friday. Best regards, Travis Oliphant Enthought, Inc. Enthought is the company that sponsored the creation of SciPy and the Enthought Tool Suite. It continues to sponsor the SciPy community by hosting the SciPy mailing list and website and participating in the development of SciPy and NumPy. Enthought creates custom scientific and technical software applications and provides training on using Python for technical computing. Enthought also provides the Enthought Python Distribution. Learn more at http://www.enthought.com Travis Oliphant's bio can be read at http://www.enthought.com/company/executive-team.php > > > > > > Scientific Computing with Python Webinar > > > > > > Each webinar in this continuing series will demonstrate the use of > some aspect of Python to assist with scientific, engineering, and > technical computing. Enthought will host each meeting and select a > specific topic based on feedback from participants > Register for a session now by clicking a date below: > Fri, May 22, 2009 3:00 PM - 3:30 PM CDT > Fri, Jun 19, 2009 1:00 PM - 1:30 PM CDT > Fri, Jul 17, 2009 1:00 PM - 1:30 PM CDT > Once registered you will receive an email confirming your registration > with information you need to join the Webinar. > System Requirements > PC-based attendees > Required: Windows® 2000, XP Home, XP Pro, 2003 Server, Vista > Macintosh®-based attendees > Required: Mac OS® X 10.4 (Tiger®) or newer > >

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Python classes at USENIX Tech - June 14-15, 2009
by David Beazley 20 May '09

20 May '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 you in San Diego! Cheers, Dave -- David Beazley (http://www.dabeaz.com) Author "Python Essential Reference"

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