Mailman 3 October 2006 - Python-announce-list

ANN: Python cgkit v2.0.0alpha7 & Maya/Python 0.9.3
by Matthias Baas 12 Oct '06

12 Oct '06

The seventh alpha release of cgkit2 and v0.9.3 of the Maya/Python package is available at http://cgkit.sourceforge.net What is it? ----------- The Python Computer Graphics Kit is an Open Source software package containing a collection of Python modules, plugins and utilities that are meant to be useful for any domain where you have to deal with 3D data of any kind, be it for visualization, creating photorealistic images, Virtual Reality or even games. Currently, the entire kit consists of the following parts: - The Python package "cgkit" that extends Python with 3D-related functionality. - The Maya plugin "sourcepy" that integrates the Python interpreter into Maya, and the accompanying Python package "maya" that makes Maya functionality available in Python. - A collection of small stand-alone utilities written in Python, MEL or MaxScript. What's new? ----------- cgkit: - The license of cgkit has changed from LGPL to a MPL/GPL/LGPL tri-license. The Maya/Python package is available under the MPL. - The built-in preprocessor has been improved so that common preprocessor directives are supported. This means the slparams module can now parse RenderMan shaders that use simple macros or include files without having to fall back to an external preprocessor. - other smaller bugfixes and enhancements (see changelog) Maya/Python: - The MEL command "python" has been renamed to "py". - There are now 260 classes from the Maya SDK available. This is about 85% of the Maya 7 SDK. The newly wrapped classes mainly consist of the message classes. - The MUserEventMessage can also be used to communicate with C++ plug-ins. - The number of "dead" methods in the api module (i.e. methods that have been wrapped but that were not callable in Python) has been reduced. These are methods that, for example, take pointers as arguments or return values by reference and that cannot be dealt with in an entirely automatic fashion. There are still such methods left, so let me know if you stumble across one of those cases. - Improved string handling in the mel module. - Multi-threading support. This means you can create a new thread in Python and this thread keeps running even when the py or pySource MEL command that was used to execute the Python code has terminated. This functionality is used for the new "remote" functionality (see below). - New sub-package "remote" that allows you to execute any MEL command from external scripts. This means you can control Maya from Python scripts that run outside Maya or even on a different machine. - Writing plug-ins in Python has become more safe as Python exceptions are now caught in the proxy wrapper classes where the traceback is printed and a status code of kFailure is returned to Maya. For more information, visit: http://cgkit.sourceforge.net Feedback is always welcome... - Matthias -

1 0

Guppy-PE 0.1.5 released
by Sverker Nilsson 12 Oct '06

12 Oct '06

I would like to announce Guppy-PE 0.1.5 Guppy-PE is a library and programming environment for Python, currently providing in particular the Heapy subsystem, which supports object and heap memory sizing, profiling and debugging. It also includes a prototypical specification language, the Guppy Specificaion Language (GSL), which can be used to formally specify aspects of Python programs and generate tests and documentation from a common source. The current version is updated to work with Python 2.5 (and can still be used with 2.3 and 2.4). It also has some feature improvements, such as some shorthand attributes, and a clearer representation of shortest paths. Bugs have been fixed wrt especially remote monitoring and making the HTML generated by GSL more standards-compliant. For update details, see the changelog included with the source code. License: MIT For more information and to download the Guppy-PE source code, see: http://guppy-pe.sourceforge.net My master thesis, "Heapy: A Memory Profiler and Debugger for Python" has now been approved and is available here: http://guppy-pe.sourceforge.net/heapy-thesis.pdf Best regards, Sverker Nilsson

1 0

ANN: BayPIGgies, Oct 12, 7:30pm, Google, Mtn View
by wesley chun 12 Oct '06

12 Oct '06

Final REMINDER: Tonight, the Silicon Valley/San Francisco Bay Area Python users group meets at Google in Mountain View from 7:30-9p. the featured speaker is Alex Martelli, author of O'Reilly's Python in a Nutshell and editor of the Python Cookbook(s). the topic is Python 2.5. for more info and directions, see http://baypiggies.net for information on meeting for dinner before the meeting (6pm): http://mail.python.org/pipermail/baypiggies/2006-October/001228.html hope to see you there! -- wesley - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - "Core Python Programming", Prentice Hall, (c)2007,2001 http://corepython.com wesley.j.chun :: wescpy-at-gmail.com python training and technical consulting cyberweb.consulting : silicon valley, ca http://cyberwebconsulting.com

1 0

SECURITY ADVISORY [PSF-2006-001] Buffer overrun in repr() for UCS-4 encoded unicode strings
by Anthony Baxter 12 Oct '06

12 Oct '06

SECURITY ADVISORY [PSF-2006-001] Buffer overrun in repr() for UCS-4 encoded unicode strings http://www.python.org/news/security/PSF-2006-001/ Advisory ID: PSF-2006-001 Issue Date: October 12, 2006 Product: Python Versions: 2.2, 2.3, 2.4 prior to 2.4.4, wide unicode (UCS-4) builds only CVE Names: CAN-2006-4980 Python is an interpreted, interactive, object-oriented programming language. It is often compared to Tcl, Perl, Scheme or Java. The Python development team has discovered a flaw in the repr() implementation of Unicode string objects which can lead to execution of arbitrary code due to an overflow in a buffer allocated with insufficient size. The flaw only manifests itself in Python builds configured to support UCS-4 Unicode strings (using the --enable-unicode=ucs4 configure flag). This is still not the default, which is why the vulnerability should not be present in most Python builds out there, especially not the builds for the Windows or Mac OS X platform provided by www.python.org. You can find out whether you are running a UCS-4 enabled build by looking at the sys.maxunicode attribute: it is 65535 in a UCS-2 build and 1114111 in a UCS-4 build. More information can be found in this posting to the python-dev mailing list: http://mail.python.org/pipermail/python-dev/2006-October/069260.html The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2006-4980 to this issue. Python 2.4.4 will be released from www.python.org next week containing a fix for this issue. A release candidate of 2.4.4 is already available containing the fix. Python 2.5 also already contains the fix and is not vulnerable. Patches for Python 2.2, 2.3 and 2.4 are also immediately available: * http://python.org/files/news/security/PSF-2006-001/patch-2.3.txt (Python 2.2, 2.3) * http://python.org/files/news/security/PSF-2006-001/patch-2.4.txt (Python 2.4) Acknowledgement: thanks to Benjamin C. Wiley Sittler for discovering this issue. The official URL for this security advisory is http://www.python.org/news/security/PSF-2006-001/

1 1

Wing IDE 2.1.3 released
by Wingware Announce 12 Oct '06

12 Oct '06

Hi, We're happy to announce version 2.1.3 of Wing IDE, an advanced development environment for the Python programming language. This is a bug fix release that fixes debugger support for Python 2.5 final, improves VI mode and multi-file replace, and adds support for Subversion 1.4, among other things. The release can be downloaded from: http://wingware.com/downloads A detailed list of changes is available here: http://wingware.com/pub/wingide/2.1.3/CHANGELOG.txt Wing IDE provides powerful debugging, editing, code intelligence, and search capabilities that reduce development and debugging time, cut down on coding errors, and make it easier to understand and navigate Python code. Highlights of Wing IDE 2.1: * Professional quality code editor * Visual Studio, VI/Vim, Emacs, and Brief key bindings * Auto-completion, call tips, and source browser * Graphical debugger for Python, Zope, and Plone * Subversion, CVS, and Perforce integration * Powerful search interface * User-extensible with Python scripts * Templates (code snippets), bookmarks, folding, macros, and more Some features are available in Wing IDE Pro only -- for details see http://wingware.com/wingide/features This release is available for Windows (2000+), Linux, and Mac OS X (10.3+ with X11 installed) and can be compiled from sources on *BSD, Solaris, and other Posix operating systems. For more information see: Product Info: http://wingware.com/products Sales: http://wingware.com/store/purchase Sincerely, The Wingware Team

1 0

RELEASED Python 2.4.4, release candidate 1
by Anthony Baxter 12 Oct '06

12 Oct '06

On behalf of the Python development team and the Python community, I'm happy to announce the release of Python 2.4.4 (release candidate 1). Python 2.4.4 is a bug-fix release. While Python 2.5 is the latest version of Python, we're making this release for people who are still running Python 2.4. See the release notes at the website (also available as Misc/NEWS in the source distribution) for details of the more than 80 bugs squished in this release, including a number found by the Coverity and Klocwork static analysis tools. We'd like to offer our thanks to both these companies for making this available for open source projects. * Python 2.4.4 contains a fix for PSF-2006-001, a buffer overrun * * in repr() of unicode strings in wide unicode (UCS-4) builds. * * See http://www.python.org/news/security/PSF-2006-001/ for more. * Assuming no major problems crop up, a final release of Python 2.4.4 will follow in about a week's time. This will be the last planned release in the Python 2.4 series - future maintenance releases will be in the 2.5 line. For more information on Python 2.4.4, including download links for various platforms, release notes, and known issues, please see: http://www.python.org/2.4.4/ Highlights of this new release include: - Bug fixes. According to the release notes, at least 80 have been fixed. - A fix for PSF-2006-001, a bug in repr() for unicode strings on UCS-4 (wide unicode) builds. Highlights of the previous major Python release (2.4) are available from the Python 2.4 page, at http://www.python.org/2.4/highlights.html Enjoy this release, Anthony Anthony Baxter anthony(a)python.org Python Release Manager (on behalf of the entire python-dev team)

1 0

Call for Members of Panels on Web Technologies
by Jeff Rush 11 Oct '06

11 Oct '06

Talks at previous PyCons have tended to be of the lecture format. I'd like to see if we can get some panel discussions going and am looking for participants. At PyCon 2005 in D.C. Michelle Levesque gave a wonderful talk, PyWebOff, contrasting a few of the web frameworks. However, it is a lot of work to research many of them, so how about instead we just invite some experts for the various frameworks to debate them instead? And answer tough questions from the audience? For updating, links to the following rough outlines are at: http://us.pycon.org/TX2007/TalkIdeas We need some moderators to work up more questions, and to coordinate with the panelists. Hey, it may be easier than preparing your own presentation and slides. I'd like to see three talk panels: --- Panel - Web Frameworks Frameworks * Django * Zope 2 * Zope 3 * Twisted Web * Quixote * TurboGears Questions Put To the Panel * When did the framework come into existence and what problem was it created to solve? * What are its strengths and maturity level? What is it ideal to use for? * What are its weaknesses? What would you NOT use it for? --- Panel - Web Templating Languages Templates Covered * Zope TAL, TALES, METAL * Twisted STAN * Cheetah * Myghty * Django's Template Language * TurboGears Kid * Quixote Python Template Language (PTL) Questions to Put to the Panelists * Python code in your HTML, or HTML in your code? * Which can and cannot be handed off to a graphics designer? * Where do they stand in performance? in Caching? * Which can work with less than a page i.e. Zope viewlets, widgets? * Which frameworks let me plug in my choice of template language? (initially show the audience a representative sample of each) --- Panel - Object Relational Mappers (ORMs) Mappers Covered * SQLObject * SQLAlchemy * Django ORM Questions Put to Panelists * Natural or artificial keys? * Support for existing database schemas or must I do it your way? * How is the performance? * How smart is it in handling complex schema? * Any support for access control security at the object level? * What flavor and degree of transaction support is offered? Per thread, per context, autocommit? -Jeff Co-Chair PyCon 2007

1 0

A Call for a Presenter on Python Eggs
by Jeff Rush 11 Oct '06

11 Oct '06

Eggs are important to Python and will become more so over the next few years, if understood and embraced by the community. They are a key competitive feature - I've been asked so many times what is the Python equivalent to CPAN and finally we're developing an answer. At PyCon 2007 we need a solid set of talks about eggs, broken down into just using them, how to build and distribute them, and then an advanced talk on some of the more exotic aspects of eggs. At PyCon 2006, essentially the 3rd talk I mention above was given to a standing-room-only audience, and then repeated against an hour later as people in the hall could not get in. But missing were the first two talks - many people were not ready for advanced material but sought an introduction. Who in our community is building eggs on a frequent basis, and is good at explaining how they work? Below are three talk outlines I've sketched out, along with the slides from a talk I tossed together for the Dallas Pythoneers group. They need polish and I'm donating them to the cause. Will someone please step forward and address this critical need? For revision, links to the three wiki outline pages appear on: http://us.pycon.org/TX2007/TalkIdeas --- Python Eggs - Using and Installing Them * What is so cool about eggs? Wow me. * What problem were they intended to solve? * What is their relation to distutils? * So how does distutils work then? * How do they compare to CPAN and RPM approaches? * Sound good, how do I enable eggs on my system? * How do I accomplish common operations? o install an egg o test install an egg, to see if it would work o uninstall an egg o list what eggs are installed at the moment o switch between the versions of an egg * I don't trust eggs - how can I partially install one, examine it and then finish the installation? * How do I find out what eggs exist, and their names? * What about py2exe and droplets? Competing approaches? * Show me a walkthru of the cheeseshop - how to find a package. * How do I figure out the author of an egg I'm having trouble with? --- Python Eggs - Creating and Distributing Them * Where does distutils fit in? * What do I need to add to setup.py to package my software as an egg? * How does it work re path configuration files? * What are the issues with zipped eggs; how can my code access my data? * How do I produce cross-platform eggs? * How do I produce platform-specific eggs? * How do I get my eggs registered on the cheeseshop? * How do I upload my eggs, source and binaries? * How can I volunteer as a packager for non-egg authors? * Some eggs are broken in the cheeseshop - how can I help? (Keep this talk simple and focused on _just_ getting your vanilla egg packaged and uploaded. Defer the advanced egg issues to the third talk). --- Python Eggs - Advanced Packaging * What are entry points? * How does dynamic discovery/plugins work? * I hear Trac uses them - how? * What are extras? They sound nifty! * What is a namespace package? When and how do I use them? * How can I have multiple distribution versions? * I hear eggs can detect files under CVS/subversion control - how does that work? * Also eggs have support for units tests - how? * Where do the egg experts hang out? An Old Talk of mine about Eggs (from which to borrow slides/ideas): * Attach:2006-03-25-AboutPythonEggs.odt * Attach:2006-03-25-AboutPythonEggs.pdf -Jeff Co-Chair PyCon 2007

1 0

Seeking Publicity Coordinator for PyCon 2007
by Jeff Rush 11 Oct '06

11 Oct '06

The PyCon organizers are looking for someone to volunteer as publicity coordinator for PyCon 2007. This year we have started planning sufficiently in advance that we'd like to get some press coverage in print magazines. What is involved, you ask? 1. Brainstorm/collect a list of candidate publications for press releases. 2. Post the lead time and submission requirements for each to the wiki. 3. Develop or work with others to develop a (textual) press release layout. 4. At the appropriate time (e.g. when certain details are settled such as keynote speakers), actually submit the press release. There is a wiki page at the following on which to collect ideas on where to submit a press release: http://us.pycon.org/TX2007/PublicityIdeas That's it! It really shouldn't take a lot of time; a bit of surfing, perhaps a few email queries. -Jeff

1 0

Seattle Python Interest Group Meeting Thursday, October 12th at 7:00 PM
by jamesthiele.usenet＠gmail.com 10 Oct '06

10 Oct '06

Seattle Python Interest Group Meeting Thursday, October 12th at 7:00 PM For more info go to www.seapig.org One topic will certainly be upcoming Sprint

1 0