Mailman 3 June 2006 - Python-announce-list

Albatross 1.35 released
by Andrew McNamara 20 Jun '06

20 Jun '06

OVERVIEW Albatross is a small toolkit for developing highly stateful web applications. The toolkit has been designed to take a lot of the pain out of constructing intranet applications although you can also use Albatross for deploying publicly accessed web applications. In slightly more than 4500 lines of Python (according to pycount) you get the following: * An extensible HTML templating system similar to DTML including tags for: - Conditional processing. - Macro definition and expansion. - Sequence iteration and pagination. - Tree browsing. - Lookup tables to translate Python values to arbitrary template text. * Application classes which offer the following features: - Optional server side or browser side sessions. - The ability to place Python code for each page in a dynamically loaded module, or to place all page processing code in a single mainline. * The ability to deploy applications as CGI, FastCGI, mod_python or a pure python HTTP server by changing less than 10 lines of code. The toolkit application functionality is defined by a collection of fine grained mixin classes. Nine different application types and six different execution contexts are prepackaged, you are able to define your own drop in replacements for any of the mixins to alter any aspect of the toolkit semantics. Application deployment is controlled by your choice of either cgi, FastCGI, mod_python, or BaseHTTPServer Request class. It should be possible to develop a Request class for Medusa or Twisted to allow applications to be deployed on those platforms with minimal changes. Albatross comes with over 180 pages of documentation. HTML and PDF formatted documentation is available from the toolkit homepage. The toolkit homepage: http://www.object-craft.com.au/projects/albatross/ The Albatross mailing list subscription and archives: http://object-craft.com.au/cgi-bin/mailman/listinfo/albatross-users CHANGES SINCE 1.33: ==================- Note that release 1.34 was an internal release. New Features ------------ * A drop-in replacement for the fcgiapp module, called fcgiappnew has been added. This version implements the FastCGI protocol itself, rather than relying on an external module to implement the protocol. This new module addresses several minor problems with fcgi.py, and should be faster, although it should not be used in critical applications until it has received wider testing. Functional Changes ------------------ * When extension tags (alx-*) are registered, their name is now checked against the template parsing regexp to ensure they can subsequently be matched. Bug Fixes --------- * The AnyTag functionality was given knowledge of HTML tags for which the close tag is forbidden, so it can avoid generating XHTML empty tag (which could cause the page to fail HTML validation). * When the disabledbool attribute was used on input tags, the disabled state was not being passed through to the input registry within the NameRecorderMixin. * If a client closed it's connection to the session server while the server had data pending for the client, a subsequent del_write_file would generate an exception, killing the session server. -- Andrew McNamara, Senior Developer, Object Craft http://www.object-craft.com.au/

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[ANN] PyYAML-3.03: YAML parser and emitter for Python
by Kirill Simonov 19 Jun '06

19 Jun '06

======================== Announcing PyYAML-3.03 ======================== A new bug-fix release of PyYAML is now available: http://pyyaml.org/wiki/PyYAML Changes ======= * Fix Python 2.5 compatibility issues. * Fix numerous bugs in the float handling. * Fix scanning some ill-formed documents. * Other minor fixes. Resources ========= PyYAML homepage: http://pyyaml.org/wiki/PyYAML PyYAML documentation: http://pyyaml.org/wiki/PyYAMLDocumentation TAR.GZ package: http://pyyaml.org/download/pyyaml/PyYAML-3.03.tar.gz ZIP package: http://pyyaml.org/download/pyyaml/PyYAML-3.03.zip Windows installer: http://pyyaml.org/download/pyyaml/PyYAML-3.03.win32.exe PyYAML SVN repository: http://svn.pyyaml.org/pyyaml Submit a bug report: http://pyyaml.org/newticket?component=pyyaml YAML homepage: http://yaml.org/ YAML-core mailing list: http://lists.sourceforge.net/lists/listinfo/yaml-core About PyYAML ============ YAML is a data serialization format designed for human readability and interaction with scripting languages. PyYAML is a YAML parser and emitter for Python. PyYAML features a complete YAML 1.1 parser, Unicode support, pickle support, capable extension API, and sensible error messages. PyYAML supports standard YAML tags and provides Python-specific tags that allow to represent an arbitrary Python object. PyYAML is applicable for a broad range of tasks from complex configuration files to object serialization and persistance. Example ======= >>> import yaml >>> yaml.load(""" ... name: PyYAML ... description: YAML parser and emitter for Python ... homepage: http://pyyaml.org/wiki/PyYAML ... keywords: [YAML, serialization, configuration, persistance, pickle] ... """) {'keywords': ['YAML', 'serialization', 'configuration', 'persistance', 'pickle'], 'homepage': 'http://pyyaml.org/wiki/PyYAML', 'description': 'YAML parser and emitter for Python', 'name': 'PyYAML'} >>> print yaml.dump(_) name: PyYAML homepage: http://pyyaml.org/wiki/PyYAML description: YAML parser and emitter for Python keywords: [YAML, serialization, configuration, persistance, pickle] Copyright ========= The PyYAML module is written by Kirill Simonov <xi(a)resolvent.net>. PyYAML is released under the MIT license.

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Pydev 1.2.0 Released
by Fabio Zadrozny 19 Jun '06

19 Jun '06

Hi All, Pydev and Pydev Extensions 1.2.0 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: ----------------------------------------------------------------- - This is the first version supporting Eclipse 3.2. - Interactive console: content is now changed so that blocks are closed with the interactive interpreter 'rules' (so that you don't have invalid syntax errors when passing code-blocks to the interactive console). - An action was added to the menu so that you can use the Open Declaration Quick-outline without needing focus on the pydev editor. Release Highlights in Pydev: ---------------------------------------------- - Eclipse 3.2 supported (and 3.1 support is now discontinued) - Lot's of optimizations to make pydev faster - Ctrl+Click now works with the find definition engine - Comments that start with #--- are shown in the outline - Attributes are shown in the outline - Parse errors are now shown (again) in the editor - Many other bugs fixed 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 ESSS - Engineering Simulation and Scientific Software http://www.esss.com.br 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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stdeb - Python to Debian source package conversion utility
by Andrew Straw 19 Jun '06

19 Jun '06

I would like to announce the initial public release of stdeb, which may be found at http://stdeb.python-hosting.com/ . The rest of this post is copied directly from that web-page. stdeb - Python to Debian source package conversion utility ========================================================== stdeb_ ("setuptools debian") produces Debian source packages from Python packages via a new distutils command, ``sdist_dsc``, which produces a Debian source package of a Python package. Automatic defaults are provided for the Debian package, but many aspects of the resulting package can be customized via a configuration file. .. _stdeb: http://stdeb.python-hosting.com/ News ---- 2006-06-19: Version 0.1 Released. See the `download page`_. Invocation ---------- All methods eventually result in a call to the ``sdist_dsc`` distutils command. You may prefer to do so directly:: python -c "import stdeb; execfile('setup.py')" sdist_dsc Alternatively, two scripts are provided:: stdeb_run_setup [options] # calls "python setup.py sdist_dsc [options]" py2dsc [options] mypackage-0.1.tar.gz # uses pre-built Python source package In all cases, a Debian source package is produced from unmodified Python packages. The following files are produced: * ``packagename_versionname.orig.tar.gz`` * ``packagename_versionname-debianversion.dsc`` * ``packagename_versionname-debianversion.diff.gz`` These can then be compiled into binary packages using the standard Debian machinery (e.g. dpkg-buildpackage). Download -------- Files are available at the `download page`_. .. _download page: http://stdeb.python-hosting.com/wiki/Download The subversion repository is available at https://svn.stdeb.python-hosting.com/trunk Background ---------- For the average Python package, its source distribution (python_package.tar.gz created with ``python setup.py sdist``) contains nearly everything necessary to make a Debian source package. This near-equivalence encouraged me to write this little distutils extension, which executes the setup.py file to extract relevant information. This process is made significantly easier through the use of setuptools_. .. _setuptools: http://peak.telecommunity.com/DevCenter/setuptools setuptools is used because of the opportunities it provides, although many of these features are currently un(der)-utilized. For example, setuptools could make the job of "Debianizing" python console and gui scripts much easier. I wrote this initially to Debianize several Python packages of my own, but I have the feeling it could be generally useful. It appears similar, at least in theory, to easydeb_ and `Logilab's Devtools`_. .. _easydeb: http://easy-deb.sourceforge.net/ .. _Logilab's DevTools: http://www.logilab.org/projects/devtools Prerequisites ------------- * Python_ 2.3 or greater * setuptools_ * subprocess.py_ (included with Python 2.4, backwards compatible with Python 2.3) .. _Python: http://www.python.org/ .. _subprocess.py: http://svn.python.org/view/python/trunk/Lib/subprocess.py?rev=46651&view=log Customizing the produced Debian source package ---------------------------------------------- stdeb will attempt to provide reasonable defaults, but these are only guesses. To customize the Debian source package produced, you may write config files of the format understood by ConfigParser_. When building each package, stdeb looks for the existance of a ``stdeb.cfg`` file in the ``.egg-info`` directory. You may specify an additional config file with the command-line option --extra-cfg-file. .. _ConfigParser: http://docs.python.org/lib/module-ConfigParser.html Here's an example .cfg file which builds several packages:: [DEFAULT] Debian-Version: 0ads1 [setuptools] Source: python-setuptools [numpy] Source: python-numpy Upstream-Version-Prefix: 0.9.8+ Build-Depends: python-dev, refblas3-dev, lapack3-dev Build-Conflicts: atlas3-base, atlas3-base-dev [matplotlib] # matplotlib doesn't incorporate its SVN version number into sdist-built tarballs. # Therefore, if building the SVN version, substitute the version into the # "Upstream-Version-Suffix" variable and use py2dsc. # (For some reason, "debuild -sa" won't build matplotlib because tk.h isn't found.) Source: python-matplotlib Upstream-Version-Suffix: .dev2500 Build-Depends: python-dev, python-numpy, python-numarray, python-numeric, python-gtk2-dev, tk8.4-dev, libwxgtk2.4-dev Depends: python-gtk2, python-numpy, python-numeric, python-numarray Suggests: gs-gpl [scipy] Source: python-scipy Upstream-Version-Prefix: 0.4.9+ Build-Depends: python-numpy Depends: python-numpy .. _numpy: http://scipy.org/NumPy Using stdeb on stdeb -------------------- There is a chicken-and-egg problem when trying to make a Debian package of stdeb with stdeb. Here's a recipe to avoid it:: # in the stdeb distribution directory (with setup.py) python setup.py sdist python setup.py build PYTHONPATH="build/lib" python stdeb/py2dsc.py dist/stdeb-VERSION.tar.gz TODO ---- * Make output meet `Debian Python Policy`_ specifications or the `new python policy`_. This will include several things, including: - the ability to make custom changelogs - the ability to patch upstream source - the ability to include project-supplied documentation (including license information) as a -doc package - the ability to include project-supplied examples, tests, and data as a separate package - much more not listed * Support python-central_ and/or python-support. * Create (better) documentation * Log output using standard distutils mechanisms * Allow distribution-specific configuration parameters (e.g. numpy-dapper) .. _debian python policy: http://www.debian.org/doc/packaging-manuals/python-policy/ .. _new python policy: http://wiki.debian.org/DebianPython/NewPolicy .. _python-central: http://python-modules.alioth.debian.org/python-central_howto.txt Call for volunteers ------------------- I don't have a lot of time for this. This project stands a very real chance of being only a shadow of its potential self unless people step up and contribute. There are numerous ways in which people could help. In particular, I'd be interested in finding a co-maintainer or maintainer if the project generates any interest. Secondarily, I would appreciate advice from Debian developers or Ubuntu MOTUs about the arcane details of Python packaging. License ------- MIT-style license. Copyright (c) 2006 stdeb authors. See the LICENSE.txt file provided with the source distribution for full details. Authors ------- Andrew Straw, California Institute of Technology <strawman(a)astraw.com>

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The First Pune Python meet is scheduled on 24th June.
by Sandy 19 Jun '06

19 Jun '06

The First Pune Python meet organized by PythonThreads.com is scheduled on 24th June. The main purpose of the meet is to introduce Python to the developers and encourage them to use it in their daily tasks also to raise the acceptance level of the non-Python developers by introducing them to the Python world. Python is used everywhere in almost all the sectors, however its not yet popular in this part of the world (India) . Considering the growing importance of scripting languages like Python, awareness of Python is today a "must" for even non-Python developers. There are very few groups in India (like Bangpypers) who are working with great efficiency and contributing in the growth of Python. We are planning to conduct the Python meets on every last Saturday of each month, it will help in spreading the Python language in Pune and across the country. We are targeting the Pune based software developers, freshers in the IT sector for this meet. In this meet we will introduce Python, its strengths, scope, in which sectors it can be implemented also an open discussion on Python. IndicThreads.com Java meets are held on the last Saturday of each month. The Python meets are also expected to follow the same schedule. Sandeep Gohad will speak on the basics of the Python language, sectors in which Python is being used and about using and promoting Python. His session will be followed by an open discussion on Python. Date and Time: Saturday, 24th June 2006 4.30 pm - 6.00 pm: Java Server Faces session - By Swarraj Kulkarni 6.00 pm - 7.00 pm: PythonThreads.com Pune Python Meet - Introduction To Python - By Sandeep Gohad. Venue: Symbiosis Institute of Computer Studies and Research (SICSR), 7th floor, Atur Center, Model Colony, Pune (Event supported by SICSR) * Entry is free of cost. Entry on first come first served basis. *Please share the meet details or this file on your college / company mailing lists or notice boards so that others could also benefit.*

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[ANN] Veusz 0.10 - a scientific plotting pacakge
by Jeremy Sanders 18 Jun '06

18 Jun '06

Veusz 0.10 is now available. Veusz is a scientific plotting package written in Python using PyQt designed to produce publication-ready postscript graphs. It allows plots to be easily constructed, and provides a simple graphical user interface, command line interface, and can be embedded within other Python programs or called externally. It also allows data to be imported using numerous formats and edited. It can make a variety of different graphs including XY, histograms, images and contour plots. Changes in this version include several user interface enhancements, and CSV files can be imported, plus lots more. Download the latest version from http://download.gna.org/veusz/ or see the homepage http://home.gna.org/veusz/ for more details. Jeremy -- Jeremy Sanders http://www.jeremysanders.net/

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PythonPerl 0.9
by Bruno Obsomer 16 Jun '06

16 Jun '06

You love Python, but think Perl can be useful anyway. You can now mix the two in a single program with the new Python module: PythonPerl (version 0.9, GPL license) It is as simple to use as: >>> import perl >>> perl.addVariable('a', ['foo', 'bar']) >>> perl.execute('$b = $a[0]') >>> perl.getVariable('b') foo Questions and comments at bobzomer AT gmail.com. <P><A HREF="http://ece.fsa.ucl.ac.be/bobsomer/PythonPerl.tgz"> PythonPerl 0.9</A> - simple module to allow the use of Perl inside Python. (16-Jun-06)

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ANNOUNCE: Zenoss-0.20.1
by Erik A. Dahl 16 Jun '06

16 Jun '06

Version 0.20.1 of Zenoss is available for download. This version fixes several issues, upgrades to Twisted-2.4 and adds finer grained monitoring control on device components such as: IpInterfaces, FileSystems, and HardDisks. Project Home: http://www.zenoss.org/ To download: http://www.zenoss.org/download/ Release Notes: http://dev.zenoss.org/trac/wiki/zenoss-0.20/ ----------- Project Blurb: Zenoss is a GPL licensed enterprise grade monitoring system that provides Inventory/Configuration, Event, Performance and Availability management in a single integrated package. It is written in Python using the Zope web application framework and Twisted network programming environment. Zenoss is designed to be easy to use for a beginner yet flexible and powerful enough for the advanced user. Enjoy, -EAD Erik Dahl

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ANN: Release of SimPy 1.7.1
by Klaus Muller 15 Jun '06

15 Jun '06

It is our pleasure to announce the release of SimPy 1.7.1. It can be downloaded via the SimPy homepage, http://simpy.sourceforge.net. What is new? =========== SimPy 1.7.1 is a minor (maintenance) release. The API has not been changed from that of SimPy 1.7. Changes ------- - Repaired a bug in the _get methods of Store and Level which could lead to synchronization problems (blocking of producer processes, despite space being available in the buffer). - Repaired Level __init__ method to allow initialBuffered to be of either float or int type. Additions --------- - Added type test for Level get parameter 'nrToGet' to limit it to positive int or float. - To improve pretty-printed output of 'Level' objects, changed attribute '_nrBuffered' to 'nrBuffered' (synonym for 'amount' property) - To improve pretty-printed output of 'Store' objects, added attribute 'buffered' (which refers to '_theBuffer') What is SimPy? ============== SimPy (= Simulation in Python) is an object-oriented, process-based discrete-event simulation language completely implemented in Python. It is released under the GNU Lesser GPL (LGPL). SimPy provides the modeler with components of a simulation model including processes, for active components like customers, messages, and vehicles, and resources, for passive components that form limited capacity congestion points like servers, checkout counters, and tunnels. It also provides monitor variables to aid in gathering statistics. Random variates are provided by the standard Python random module. Many users claim that SimPy is one of the cleanest, easiest to use discrete event simulation packages! SimPy is in use at many universities, Research institutes and in industry. SimPy comes with data collection capabilities, GUI and plotting packages. It can be easily interfaced to other packages, such as plotting, statistics, GUI, spreadsheets, and data bases. The distribution contains extensive documentation (manuals, cheatsheet, tutorials, HTML-based source code documentation) and a wide variety of simulation models in SimPy. Download, enjoy, and don't forget to give us feedback! Klaus Müller Tony Vignaux

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[ANN] Balazar Brothers 0.3.1, a 3D game in Python!
by Jiba 15 Jun '06

15 Jun '06

WHAT IS BALAZAR BROTHERS ? Balazar Brothers is a 3D Puzzle game, written entirely in Python using the Soya 3D engine. The game proposes impressive 3D graphics as well as interesting challenge. A 3D platform universe, two characters and two keys, one for each character. Just press a key and the corresponding character will jump on the next platform in front of him. But many traps and moving platforms will get you crazy! See screenshots => http://home.gna.org/oomadness/en/balazar_brother/screenshot.html WHAT'S NEW ? This release adds: * a new world, the Pompon forest, with a new music and 9 funny levels :-) * different animations for each of the two Balazar brothers, and a special animation for the brother surf * an improved cellshading rendering * the new Cerealizer file format Get Balazar Brothers here: http://home.gna.org/oomadness/en/balazar_brother/index.html Jiba

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Python-announce-list June 2006