Python-announce-list July 2008

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57 discussions

Jython 2.5 Alpha Released!
by Frank Wierzbicki 15 Jul '08

15 Jul '08

On behalf of the Jython development team, I'm pleased to announce that Jython 2.5a0+ is available here http://downloads.sourceforge.net/jython/jython_installer-2.5a0.jar for download. See http://jython.org/Project/installation.html for installation instructions. This is the first alpha release of Jython 2.5 and contains many new features. In fact, because we have skipped 2.3 and 2.4, there are too many to even summarize. A few of the features are: * generator expressions * with statement * exceptions as new-style classes * unicode support more in line with CPython * decorators Under the hood Jython 2.5 has a new parser based on ANTLR 3.1 and the compiler has been refactored to use ASM. There are so many more changes that I have missed more than I have listed. This is an alpha release, so there are known and unknown bugs, so be careful.

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ANN: TakeNote 0.4 - Note taking and organization
by rasmus 15 Jul '08

15 Jul '08

TakeNote is a simple cross-platform note taking program implemented in Python. I have been using it for my research and class notes, but it should be applicable to many note taking situations. Although this is my first release, it has most of the basic features needed for effective notes. TakeNote is ideal for storing your class notes, TODO lists, research notes, journal entries, paper outlines, etc in a simple notebook hierarchy with rich-text formatting, images, and more. Using full-text search, you can retrieve any note for later reference. TakeNote is designed to be cross-platform (runs on Windows, Linux, and MacOS X, implemented in Python and PyGTK) and stores your notes in simple and easy to manipulate file formats (HTML and XML). Archiving and transferring your notes is as easy as zipping or copying a folder. TakeNote is licensed under GPL. TakeNote 0.4 is has the following features: * Rich-text formatting * Hierarchical organization for notes * Full-text search * Inline images * Integrated screenshot * Spell checking (via gtkspell) * Auto-saving * Built-in backup and restore (archive to zip files) * Cross-platform (Linux, Windows, MacOS X) Web site and download: http://rasm.ods.org/takenote Matt Rasmussen

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May & June PSF Board meeting minutes available
by David Goodger 15 Jul '08

15 Jul '08

Minutes of Regular Meetings of the Board of Directors of the Python Software Foundation, * May 12, 2008: http://www.python.org/psf/records/board/minutes/2008-05-12 * June 16, 2008: http://www.python.org/psf/records/board/minutes/2008-06-16 David Goodger, PSF Secretary

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[ANN} Daily pyogp coders meeting (PYthon Open Grid Protocols for virtual worlds)
by Lawson English 15 Jul '08

15 Jul '08

pyogp is a Python-based virtual worlds test harness and client library being developed by Linden Lab, makers of Second Life, and members of the SL Architecture Working Group, in order to test the Open Grid Protocols that were used in the recent "proof of concept" demo by IBM and Linden Lab, that allowed avatars to teleport from one virtual world (Second Life) to another (Open Simulator) using standardized interoperability protocols. http://www.informationweek.com/news/personal_tech/virtualworlds/showArticle… A daily meeting within Second LIfe has been setup for pyogp coders and designers to meet, as described in the announcement below. This is the transcript of the first meeting: http://wiki.secondlife.com/wiki/Pyogp/Chat_Logs/Daily_Meeting/14_jul_2008 The pyogp meetings are open to any "resident" of Second Life, and anyone with a desire to contribute to the process (especially coding) is certainly welcome. In World Meetings We're going to start having daily meetings at "infinity is full of stars" in the Levenhall simulator in Second Life at 9:30AM SLT (Pacific Coast Time) each day. These meetings are for the PyOGP coders to meet and discuss design, process and status. In the near term, these are likely to be "somewhat beefy" meetings where design issues are discussed and differences hammered out. In the longer term, these will hopefully be more "Agile Stand-Up" style meetings where we discuss: a. what we've done in the last 24 hours, b. what we're going to do in the next 24 and c. what we're blocked on. what PyOGP Coders Meeting who PyOGP l33t C0d3rZ where "infinity is full of stars" @ http://slurl.com/secondlife/Levenhall/91/208/22 when 9:30AM SLT / 12:30PM Eastern Time / 5:30PM GMT / 6:30PM Central European Time why for PyOGP contributors to hash out architecture, design, test and deploy issues IRC: irc://irc.freenode.com/#pyogp Mailing list: https://lists.secondlife.com/cgi-bin/mailman/listinfo/pyogp wiki: http://wiki.secondlife.com/wiki/Pyogp

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[pygtk] ANNOUNCE: PyGObject 2.15.0
by Johan Dahlin 14 Jul '08

14 Jul '08

I am pleased to announce version 2.15.0 of the Python bindings for GObject. The new release is available from ftp.gnome.org as and its mirrors as soon as its synced correctly: http://download.gnome.org/sources/pygobject/2.15/ There are two new significant features in this release, initial bindings for GIO. Note that these are not complete, please report missing API in Bugzilla so we know what people are missing. Codegen has been moved from PyGTK and can now be used without depending on GTK+, which should be useful for GObject based libraries. What's new since PyGObject 2.14.x? - Add GIO bindings (Johan, Mario Tagliaretti, Thomas Leonard) - Move codegen from PyGTK (Johan, Paul Pogonyshev, #542821) - Add more variables to the .pc files (Damien Carbery, Paul, Dan Winship, #486876) - Add pyg_option_group_new to the public API (Johan) - Add g_get_application_anme and g_get_progname (Sebastian Rittau) - Avoid making wakeups when using Python 2.6 (Johan, Gustavo, Adam Olsen, Josselin Mouette, Philippe Normand, Guido Van Rossum) - Only link against libffi when found (Ed Catmur, #496006) - Improve gobject.property (Tomeu Vizoso, #523352) - Improve enum comparision and warnings (Paul, Phil Dumont, #428732) - Many gobject.Source improvements (Bryan Silverthorn) - Apply some fixes to make pylint happier (Johan, Simon Schampijer, #523821) - Fix error message in pyg_io_add_watch (Juha Sahkangas) - Improve h2def.py (Oliver Crete, Murray Cumming, Lauro Moura) Blurb: GObject is a object system library used by GTK+ and GStreamer. PyGObject provides a convenient wrapper for the GObject+ library for use in Python programs, and takes care of many of the boring details such as managing memory and type casting. When combined with PyGTK, PyORBit and gnome-python, it can be used to write full featured Gnome applications. Like the GObject library itself PyGObject is licensed under the GNU LGPL, so is suitable for use in both free software and proprietary applications. It is already in use in many applications ranging from small single purpose scripts up to large full featured applications. PyGObject requires glib >= 2.8.0 and Python >= 2.3.5 to build. GIO bindings require glib >= 2.16.0. -- Johan Dahlin jdahlin(a)async.com.br

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ANN: cssutils 0.9.5rc2
by Christof Hoeke 14 Jul '08

14 Jul '08

what is it ---------- A Python package to parse and build CSS Cascading Style Sheets. (Not a renderer though!) main changes ------------ There has been a **major change** in this release which may affect your program and may require some rewriting... There is a workaround (see below) but please take care. The second major change in this release is a quite noticable performance improvement which was more or less a side effect of a bugfix... 0.9.5rc2 080714 - **API CHANGE/BUGFIX (major)**: Upto 0.9.5rc1 any sheet resulting from parsing via any ``parse*`` function or ``CSSParser(raiseExceptions=False)`` (which also was and is the default) resulted in the library simply logging any later exceptions and not raising them. Until now the global setting of ``cssutils.log.raiseExceptions=True`` (the default) was overwritten with the value of the CSSParser ``raiseExceptions`` setting which normally is ``False`` any time a ``cssutils.parse*`` function or ``CSSParser.parse*`` method was used. 0.9.5rc2 fixes this. until 0.9.5rc1:: >>> # parsing does not raise errors >>> s = cssutils.parseString('$') # empty but CSSStyleSheet object >>> # using DOM methods does **not raise either** but should: >>> s.cssText = '$' # just logs: ERROR CSSStyleRule: No start { of style declaration found: u'$' [1:2: ] from 0.9.5rc2:: >>> # parsing STILL does not raise errors >>> s = cssutils.parseString('$') # empty but CSSStyleSheet object >>> # using DOM methods **does raise now though** >>> s.cssText = '$' # raises: xml.dom.SyntaxErr: CSSStyleRule: No start { of style declaration found: u'$' [1:1: $] To use the old but false behaviour add the following line at the start to your program:: >>> cssutils.log.raiseExceptions = False # normally True **This should only be done in specific cases** as normal raising of exceptions in methods or functions with the CSS DOM is the expected behaviour. **This setting may also be removed in the future so use with care.** - **BUGFIX**: Parsing of @rules like ``@mediaall ...`` does not result in ``@media all ...`` anymore (so not a ``CSSMediaRule``) but parses as ``@mediaall`` so a ``CSSUnknownRule``. The specification is not too clear here but it seems this is the way to go. To help finding typos like this probably is, for any found CSSUnknownRule (an unknown @rule) a WARNING is emitted now (but never an exception raised). These typos will most likely happen like e.g. ``@mediaall``, ``@importurl()``, ``@namespaceprefix"uri"`` or ``@pagename:left``. - **BUGFIX**: Parsing of unicode escapes like ``\\abc`` followed by CR/LF this is now correctly combined as only a single whitespace character. - **BUGFIX**: Adding a malformed ``stylesheets.MediaQuery`` to a ``stylesheets.MediaList`` does fail now, e.g.:: >>> # invalid malformed medialist (missing comma): >>> sheet = cssutils.parseString('@media tv INVALID {a {top: 0;}}') ERROR MediaQuery: Unexpected syntax. [1:11: INVALID] ERROR MediaList: Invalid MediaQuery: tv INVALID >>> # the actual rule exists but has default empty content, this may be changed later as it can be seen as a bug itself >>> sheet.cssRules[0] cssutils.css.CSSMediaRule(mediaText=u'all') >>> sheet.cssText '' >>> # BUT: Unknown media type but as it is valid does parse: >>> sheet = cssutils.parseString('@media tv, UNKNOWN {a {top: 0;}}') WARNING MediaQuery: Unknown media type "UNKNOWN". >>> sheet.cssRules[0] cssutils.css.CSSMediaRule(mediaText=u'tv, UNKNOWN') >>> sheet.cssText '@media tv, UNKNOWN {\n a {\n top: 0\n }\n }' - **BUGFIX**: References to ``MediaList`` in ``CSSImportRule`` and ``CSSMediaRule`` are kept now properly. - BUGFIX: Deleting a ``MediaQuery`` item from a ``MediaList`` does use the libs logging/raising settings instead of always raising - **IMPROVEMENT**: Parsing performance has been improved (by about 25%, tested with a basic CSS of about 50 lines, so may not be representative but this release definitely is faster ;). The following changes have been done which should not impact any actual stylesheet: + A ``BOM`` token is recognized at the start of a stylesheet only (may be swallowed by the CSS codec anyway). + A ``BOM`` token is not counted in the line/col reporting anymore so the following token has a line and col of 1 now + Tests for tokenizing with css2productions has been removed but this is never used in the library anyway Note: CSSValue, CSSValueList, and CSSPrimitiveValue and the relevant methods/properties Property.cssValue and CSSStyleDeclaration.getPropertyCSSValue are more or less DEPRECATED and will probably be replaced with interfaces defined in CSSOM. For now use the properties and methods that handle values as simple strings, e.g. ``Property.value``. As the aforementioned classes are not hardly that useful anyway this should not be a big problem but please beware if you use or have used them. If you think this a bad idea please let me know! license ------- cssutils is published under the LGPL version 3 or later, see http://cthedot.de/cssutils/ If you have other licensing needs please let me know. download -------- For download options see http://cthedot.de/cssutils/ cssutils needs Python 2.4 or higher (tested with Python 2.5.2 on Vista only) Bug reports (via Google code), comments, etc are very much appreciated! Thanks. Christof

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BootCampArama Final Reminder
by Chris Calloway 14 Jul '08

14 Jul '08

Final reminder, we're in the last two weeks of open registration for PyCamp, Plone Boot Camp, and Advanced Plone Boot Camp: http://trizpug.org/boot-camp/2008/ Registration is now open for: PyCamp: Python Boot Camp, August 4 - 8 Plone Boot Camp: Customizing Plone, July 28 - August 1 Advanced Plone Boot Camp: Plone 3 Techniques, August 4 - 7 All of these take place on the campus of the University of North Carolina at Chapel Hill in state of the art high tech classrooms, with free mass transit, low-cost accommodations with free wireless, and convenient dining options. Plone Boot Camp is taught by Joel Burton, twice chair of the Plone Foundation. Joel has logged more the 200 days at the head of Plone classrooms on four continents. See plonebootcamps.com for dozens of testimonials from Joel's students. PyCamp is taught by Chris Calloway, facilitator for TriZPUG and application analyst for the Southeast Coastal Ocean Observing System. Chris has developed PyCamp for over 1500 hours on behalf of Python user groups. Early bird registration runs through June 30. So register today! PyCamp is TriZPUG's Python Boot Camp, which takes a programmer familiar with basic programming concepts to the status of Python developer with one week of training. If you have previous scripting or programming experience and want to step into Python programming as quickly and painlessly as possible, this boot camp is for you. PyCamp is also the perfect follow-on to Plone Boot Camp: Customizing Plone the previous week. At Plone Boot Camp: Customizing Plone you will learn the essentials you need to build your Plone site and deploy it. This course is the most popular in the Plone world--for a good reason: it teaches you practical skills in a friendly, hands-on format. This bootcamp is aimed at: * people with HTML or web design experience * people with some or no Python experience * people with some or no Zope/Plone experience It covers using Plone, customizing, and deploying Plone sites. At Advanced Plone Boot Camp: Plone 3 Techniques you will learn to build a site using the best practices of Plone 3 as well as advance your skills in scripting and developing for Plone. The course covers the new technologies in Plone 3.0 and 3.1intended for site integrators and developers: our new portlet infrastructure, viewlets, versioning, and a friendly introduction to Zope 3 component architecture. Now, updated for Plone 3.1! The course is intended for people who have experience with the basics of Plone site development and HTML/CSS. It will cover what you need to know to take advantage of these new technologies in Plone 3. For more information contact: info(a)trizpug.org

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grin 1.1
by Robert Kern 14 Jul '08

14 Jul '08

grin is a new grep-like tool for recursively searching through text files, primarily source code. Download: http://pypi.python.org/pypi/grin Wiki: https://svn.enthought.com/enthought/wiki/Grin SVN: https://svn.enthought.com/svn/sandbox/grin/trunk Basically, it does exactly what I want grep to do 99% of the time with the least amount of thinking: recursive grep that skips crud I'm almost never interested in. For example, .svn/ directories contain "clean" copies of your source code to enable quick local operations that don't talk to the server. grepping through a Subversion checkout will pick up false positives in these files. grin solves this problem and also serves as a nice library for you to implement custom search tools. If you can make a filelike object with the text you want to search, the grin library can search it with all of the same features of the command line tool. I talk about these possibilities a little more over here: http://blog.enthought.com/?p=45 -- Robert Kern robert.kern(a)enthought.com

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SciPy 2008 Registration Deadline Extended
by Travis Vaught 12 Jul '08

12 Jul '08

Greetings, The merchant account processor that we use for the SciPy Conference online registration has been experiencing some inexplicable problems authorizing some registrations. Apologies to those who have struggled to register and have not been successful. Because of the problems, we're extending the early-bird rates through Monday at midnight Central Time. If you experience any problems registering, please give us a call during business hours Monday (9:00am - 5:00pm Central - 512.536.1057). http://conference.scipy.org/ For those of you who have set up an account on the conference site, but have not yet registered, I encourage you to do so in time to take advantage of the lower rates. I also encourage everyone to make sure you've specified which tutorial track, T-shirt size, whether you'll attend the sprint, and meal preferences in your profile (http://conference.scipy.org/profile ). Please send me an email if you have any questions. Best, Travis

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Regular Toronto Python User's Group (PyGTA) Meeting July 15th: Code Aesthetics
by Mike C. Fletcher 11 Jul '08

11 Jul '08

We'll be holding our regular Toronto Python User's Group (PyGTA) this upcoming Tuesday the 15th 7pm at Linux Caffe, on the corner of Grace and Harbord Street. At the moment we don't have a confirmed speaker, so I was thinking we might try the following (inspired by one of Greg Wilson's recent blog posts[1]): Code Aesthetics Bring a piece of code that you love. Something that's elegant, beautiful, efficient, useful, perfectly formatted, meaningful, warped or wonderful in some way. We'll take 5 minutes each and present our chosen piece of code. Then we'll have people ask questions about the code and why you love it. The code has to be something that can be exposed to the public w/out any non-disclosure agreements or the like, but doesn't necessarily have to be Open Source or distributed. What we're looking for is a discussion of the beauty in the code, the amazing things about it that make it worthwhile. The code does *not* need to be your own work, nor does it necessarily need to be in Python. If possible, try to cut down the code you *present* to a couple of pages (screens) of code, but if your aesthetic preference runs to big systems, be able to describe the system you choose well enough to communicate the wonder of it to the rest of us. Is there any beautiful code out there? Does beauty in code matter? Is code poetry or just grotty machinery? We'll likely repair to a location with beer as the evening winds on and the philosophy runs deep. http://www.pygta.org Have fun, Mike [1] http://pyre.third-bit.com/blog/archives/1650.html -- ________________________________________________ Mike C. Fletcher Designer, VR Plumber, Coder http://www.vrplumber.com http://blog.vrplumber.com

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Python-announce-list July 2008