Mailman 3 September 2005 - Python-announce-list

ANN: MayaVi-1.5 released
by prabhu_r＠users.sf.net Sept. 13, 2005

Sept. 13, 2005

Hi, This is to announce the availability of the MayaVi Data Visualizer version 1.5. MayaVi is a free, easy to use, scientific data visualizer. It is written in Python, uses the Visualization Toolkit (VTK) for the graphics and provides a GUI written using Tkinter. MayaVi is distributed under a BSD license. It is also cross platform and should run on any platform where both Python and VTK are available (this includes Linux, Windows and Mac OSX). Also bundled with MayaVi is a VTK pipeline browser written in Python and a utility module that makes using VTK easier from the Python interpreter. For more information, sources, binaries, screenshots, installation instructions, documentation etc. visit the MayaVi home page at: Home page: http://mayavi.sourceforge.net SourceForge: http://sourceforge.net/projects/mayavi Download: http://sourceforge.net/project/showfiles.php?group_id=27020&release_id=3561… New in this release ------------------- * Added new LUT editor contributed by Gerald Knizia and Arnd Baecker. The LUT editor allows one to edit the colors in RGB or HSV mode. The editor can also be used standalone. * Added support to easily add user defined sources (works just like the user defined modules and filters). Contributed by Ross Harder. * Support for VolumeProMapper contributed by Daniel James White and Heikki Uuksulainen. * Added a Vorticity filter (contributed by Gareth Clay) that computes the vorticity of input vector data. * Updated MayaVi and vtkPipeline to work with VTK-CVS and VTK-5.x. Support for VTK versions < 4.0 has been removed. MayaVi and the pipeline browser will continue to work with VTK-4.x. * Added a utility vtk_doc.py script that allows one to search the VTK class docs using a GUI. * Fixed severe bug in opening data files belonging to a time-series under Windows. * Fixed various other bugs (details in full changelog). Acknowledgements ---------------- Many thanks to SourceForge for their continued support in hosting MayaVi. Thanks also to various the users who provided feature improvements, patches, bug reports, support and suggestions. Have fun! prabhu

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BayPIGgies: DATE CHANGE September 15, 7:30pm (Google)
by Aahz Sept. 13, 2005

Sept. 13, 2005

The next meeting of BayPIGgies will be Thurs, September 15 at 7:30pm at Google, Bldg 40, room Temp Tech Talk. You need to go to the lobby of Bldg 43 first to get a badge. Ben Bangert will do "SQLObject & FormEncode, A Practical Introduction" - Using SQLObject to integrity check legacy databases - FormEncodes use for validation and data coercion - Easy web front-ends to databases - Fully abstracted database access for easy portability BayPIGgies meetings alternate between IronPort (San Bruno, California) and Google (Mountain View, California). For more information and directions, see http://www.baypiggies.net/ Before the meeting, we sometimes meet at 6pm for dinner. Discussion of dinner plans is handled on the BayPIGgies mailing list. Advance notice: The meeting agenda for October 13 and December 8 has been set. We've got some options on the plate for November but haven't settled anything yet. Please send e-mail to baypiggies(a)baypiggies.net if you want to suggest an agenda (or volunteer to give a presentation). -- Aahz (aahz(a)pythoncraft.com) <*> http://www.pythoncraft.com/ The way to build large Python applications is to componentize and loosely-couple the hell out of everything.

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ANN: pyparsing-1.3.3 released
by Paul McGuire Sept. 13, 2005

Sept. 13, 2005

Pyparsing 1.3.3 contains mostly bugfixes and minor enhancements over previous releases, including some improvement in Unicode support. Here are the change notes: Version 1.3.3 - September 12, 2005 ---------------------------------- - Improved support for Unicode strings that would be returned using srange. Added greetingInKorean.py example, for a Korean version of "Hello, World!" using Unicode. (Thanks, June Kim!) - Added 'hexnums' string constant (nums+"ABCDEFabcdef") for defining hexadecimal value expressions. - NOTE: ===THIS CHANGE MAY BREAK EXISTING CODE=== Modified tag and results definitions returned by makeHTMLTags(), to better support the looseness of HTML parsing. Tags to be parsed are now caseless, and keys generated for tag attributes are now converted to lower case. Formerly, makeXMLTags("XYZ") would return a tag with results name of "startXYZ", this has been changed to "startXyz". If this tag is matched against '<XYZ Abc="1" DEF="2" ghi="3">', the matched keys formerly would be "Abc", "DEF", and "ghi"; keys are now converted to lower case, giving keys of "abc", "def", and "ghi". These changes were made to try to address the lax case sensitivity agreement between start and end tags in many HTML pages. No changes were made to makeXMLTags(), which assumes more rigorous parsing rules. Also, cleaned up case-sensitivity bugs in closing tags, and switched to using Keyword instead of Literal class for tags. (Thanks, Steve Young, for getting me to look at these in more detail!) - Added two helper parse actions, upcaseTokens and downcaseTokens, which will convert matched text to all uppercase or lowercase, respectively. - Deprecated Upcase class, to be replaced by upcaseTokens parse action. - Converted messages sent to stderr to use warnings module, such as when constructing a Literal with an empty string, one should use the Empty() class or the empty helper instead. - Added ' ' (space) as an escapable character within a quoted string. - Added helper expressions for common comment types, in addition to the existing cStyleComment (/*...*/) and htmlStyleComment () . dblSlashComment = // ... (to end of line) . cppStyleComment = cStyleComment or dblSlashComment . javaStyleComment = cppStyleComment . pythonStyleComment = # ... (to end of line) Download pyparsing at http://pyparsing.sourceforge.net. -- 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 and Korean) - 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

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Sept 14 Fredericksburg, VA ZPUG: Packaging with zpkg, review of Python Cookbook 2nd ed
by Gary Poster Sept. 12, 2005

Sept. 12, 2005

Please join us September 14, 7:30-9:00 PM, for the fourth meeting of the Fredericksburg, VA Zope and Python User Group ("ZPUG"). This meeting has three features of note. - Fred Drake, Zope Corp Senior Software Engineer, Python core developer, and Python documentation maintainer and editor will present a discussion of zpkg, the Zope Packaging Tools (http:// www.zope.org/Members/fdrake/zpkgtools/). - Gary Poster, Zope Corp Senior Software Engineer, will present a brief review of the second edition of the O'Reilly Python Cookbook (http://www.oreilly.com/catalog/pythoncook2/). - We will serve delicious fruit, cheese, and soft drinks. We've had a nice group for all the meetings. Please come and bring friends! An RSVP would be appreciated if you are coming, but is not necessary. More information http://www.zope.org/Members/poster/fxbgzpug_announce_4 and below. Upcoming meetings are already tentatively planned for presenters (although we can still use more, particularly lightning talks): see http://www.zope.org/Members/poster/fxbgzpug_announce_5 and http://www.zope.org/Members/poster/fxbgzpug_announce_6 Hope to see you there! Gary General ZPUG information ------------------------------------ When: second Wednesday of every month, 7:30-9:00. Where: Zope Corporation offices. 513 Prince Edward Street; Fredericksburg, VA 22408 (tinyurl for map is http://tinyurl.com/duoab). Parking: Zope Corporation parking lot; entrance on Prince Edward Street. Topics: As desired (and offered) by participants, within the constraints of having to do with Python. Contact: Gary Poster (gary(a)zope.com)

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ANN: retest 0.5
by Christof Sept. 11, 2005

Sept. 11, 2005

what is it ---------- A simple Server which enables tests of Python regular expressions (re module) in a webbrowser. Uses SimpleHTTPServer and AJAX. You need: Python, a modern webbrowser like Firefox, IE (from 5.5), Safari or Opera (from 8) which handles XMLHttpRequest. changes ------- * added re.match and re.search, both show groups and named groups if any found * added accesskeys for all functionalities license ------- This work is licensed under a Creative Commons License. download -------- current version: retest-0.5.zip - 050911, from http://cthedot.de/retest/ Tested with Python 2.4.1, Firefox 1.06, Internet Explorer 6 and Opera 8.02 on Windows XP only. Seems to work best with Firefox and Opera, any feedback (success or failure ;) is welcome. usage ----- Start the server with >python reserver.py and open http://localhost:8087/ in your webbrowser. You might want to adjust the PORT used in reserver.py. The usage of the application itself should be self explanatory, take a look in the Python documentation for the re module. any comment will be appreciated, thanks christof hoeke <P><A HREF="http://cthedot.de/retest/">retest 0.5</A> - test Python regular expressions in a webbrowser (11-Sep-05)

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ANNOUNCE: twill 0.7.2
by C. Titus Brown Sept. 11, 2005

Sept. 11, 2005

ANNOUNCING twill v0.7.2. twill is a simple Web scripting language built on top of Python and John J. Lee's 'mechanize'. It's designed for automated testing of Web sites, but it should prove useful for anybody who needs to interact with Web sites (especially those using logins and cookies) on the command line or via a script. twill is a reimplementation of Cory Dodt's PBP. A twill script looks like this: # go to the /. login page go http://slashdot.org/login.pl # fill in the form fv 1 unickname test fv 1 upasswd test submit # ok, there's no such account ;). show error HTML. show --- This is the third public release of twill, version 0.7.2. (Tagline: "no obvious bugs") I'm still looking for general feedback on usability, as well as suggestions on additional use cases. Download directly here: http://darcs.idyll.org/~t/projects/twill-0.7.2.tar.gz Documentation is online at http://www.idyll.org/~t/www-tools/twill.html --- Miscellaneous details: twill is implemented in Python and uses pyparsing and mechanize. In addition to the existing simple command language, twill can easily be extended with Python. twill also provides a fairly simple and well-documented wrapper around mechanize. twill scripts can be recorded with maxq, although scripts may require some hand tweaking at the moment. See the twill documentation for more information. twill does not understand JavaScript, I'm sorry to say. --- Notable bug fixes and features: * save_html and HTTP debugging commands; * fixed extend_with bugs; * updated pyparsing to 1.3.2; * first PyPi release;

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[ANN] ratfun-2.1 Polynomials and Rational Functions
by Raymond L. Buvel Sept. 10, 2005

Sept. 10, 2005

The ratfun module provides classes for defining polynomial and rational function (ratio of two polynomials) objects. These objects can be used in arithmetic expressions and evaluated at a particular point. Home page: http://calcrpnpy.sourceforge.net/ratfun.html Note: If you are using rpncalc-1.2 or later, this module is already included. This release is for folks who don't want rpncalc. Changes in 2.1 Upgraded the polynomial root finder so that it handles ill-conditioned polynomials better.

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[ANN] rpncalc-2.1 RPN Calculator for Python
by Raymond L. Buvel Sept. 10, 2005

Sept. 10, 2005

The rpncalc package adds an interactive Reverse Polish Notation (RPN) interpreter to Python. This interpreter allows the use of Python as an RPN calculator. You can easily switch between the RPN interpreter and the standard Python interpreter. Home page: http://calcrpnpy.sourceforge.net/ Changes in 2.1 Upgraded the polynomial root finder so that it handles ill-conditioned polynomials better.

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ANN: Karrigell-2.1.9 released
by Pierre Quentel Sept. 10, 2005

Sept. 10, 2005

Hello Python folks, A new version of Karrigell (http://karrigell.sourceforge.net) has been released It's a Pythonic web framework, with an almost flat learning curve : - all you need to know is Python and HTML - as in Python, the simple tasks are very easy to program (the Hello world script is simply "print 'Hello world'"), and for the more difficult ones (session management, authentication, localization...), the syntax remains simple and intuitive - you can start developing with the built-in web server and the gadfly database included in the package, without any manual configuration - many demos are provided, including a wiki server, "kwiki" (a wiki using FCKEditor to edit pages), a forum, a calendar and many more Developers will find it very flexible, with a variety of coding styles, from pure Python scripts to the PHP-like "Python Inside HTML". You can also use "Karrigell services", Python scripts where the functions are mapped to URLS First designed as a lightweight solution, targetting simple, small-scale applications running on home PCs for instance, it has evolved into a more scalable product, adapted to more complex applications. It is now supported on shared web hosting by python-hosting.com, running behind Apache It's been around for nearly 3 years now, and is still evolving regularly. This new version adds many new features, a better documentation, and fixes a couple of bugs Regards, Pierre

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ANN: pythonutils 0.2.1
by Fuzzyman Sept. 8, 2005

Sept. 8, 2005

Hello Python Folk, pythonutils 0.2.1 is now available. This is a *major* update since 0.1.0 http://www.voidspace.org.uk/python/modules.shtml#pythonutils http://www.voidspace.org.uk/cgi-bin/voidspace/downman.py?file=pythonutils-0… http://www.voidspace.org.uk/cgi-bin/voidspace/downman.py?file=pythonutils-0… What is pythonutils ? ===================== The Voidspace Pythonutils package is a simple way of installing the Voidspace collection of modules. Several of the Voidspace Projects depend on these modules. They are also useful in their own right of course. They are primarily general utility modules that simplify common programming tasks in Python. The modules included are all fully documented. They are : ConfigObj - simple config file handling validate - validation and type conversion system listquote - string to list conversion StandOut - simple logging and output control object pathutils - for working with paths and files cgiutils - cgi helpers urlpath - functions for handling URLs odict - Ordered Dictionary Class Note: These modules have changed quite significantly since 0.1.0. Only install if you're sure this won't break your applications :-) What Has Changed Since 0.1.0 ? ============================== The *major* change is that *all* these modules now have their own online documentation (and almost all of them have been refactored). There are links to them all via : http://www.voidspace.org.uk/python/pythonutils.html#documentation 2005/09/04 - Version 0.2.1 -------------------------- Version 0.2.1 Updated to ConfigObj 4.0.0 beta 4 This contains bugfixes to ConfigObj. 2005/08/31 - Version 0.2.0 -------------------------- Refactored and redocumented. **Major** update to ConfigObj and validate. Removed caseless, and added odict and urlpath. * ConfigObj 4.0.0 beta 3 * listquote 1.4.0 * validate 0.2.0 * StandOut 2.1.0 * pathutils 0.2.1 * cgiutils 0.3.2 * odict 0.1.0 * urlpath 0.1.0

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