Mailman 3 October 2009 - Python-announce-list

[ANN] TurboGears 1.1 final released
by Christopher Arndt 05 Oct '09

05 Oct '09

On behalf of the TurboGears Team, I am pleased to announce that TurboGears 1.1 final is available for download at http://turbogears.org/ and the Python package index http://pypi.python.org/pypi/TurboGears TurboGears 1.1 is the first stable release of the TurboGears 1.1 branch, which is the evolution of the TurboGears 1 codebase. The 1.1 branch now uses SQLAlchemy as the default database layer and Genshi as the standard templating engine but is 100 percent compatible with applications built on TurboGears 1.0. During its long beta period, versions of TurboGears 1.1 have been in use in real, high-demand production environments for over a year now, so we believe this release is rock-stable. What is TurboGears? ------------------- TurboGears is a rapid development, "front-to-back", open source web meta-framework. Its aim is to simplify and speed up the development of modern web applications written in the Python programming language. TurboGears is designed around the model-view-controller architecture, much like Struts or Ruby on Rails, and takes the best Python web components available (hence "meta-framework") and combines them into one easy-to-install, documented whole. What's new? ----------- Apart from the change of defaults to SLQAlchemy and Genshi, TurboGears 1.1 has a new testing framework built on WebTest, a new quickstart design (backported from TurboGears 2) and many, many bigger and smaller fixes and improvements over version 1.0 in its internals. We made a few more important changes after the 1.1rc release candidate, in particular some fixes in the Genshi support and the templating plugin support in general. For a comprehensive list of changes, as always, see the changelog in our Trac at http://trac.turbogears.org/wiki/ChangeLog How to install? --------------- The easiest way to install TurboGears 1.1rc1 is via setuptools: [sudo] easy_install [-f http://turbogears.org/download/] TurboGears We recommend that you install TurboGears into its own virtual environment using the virtualenv tool: [sudo] easy_install virtualenv virtualenv --no-site-packages /path/to/tgenv source /path/to/tgenv/bin/activate easy_install [-f http://turbogears.org/download/] TurboGears How is it related to TurboGears 2? ---------------------------------- TurboGears 1.1 is based on the original TurboGears 1.0 codebase and still uses CherryPy 2.3 as the underlying web application server. It is 100 percent compatible with existing TurboGears 1.0 applications and porting an application using SQLObject and Kid to use SQLAlchemy and Genshi is easily achieved. TurboGears 2 has almost the same API as TurboGears 1.x but builds on Pylons as the underlying web engine. Most new development for TurboGears now happens in version 2, but the 1.1 branch will be continued to be supported and maybe even developed further for the foreseeable future. The Future ---------- We plan to issue a maintenance release for the TurboGears 1.0 branch, which would be version 1.0.9, within the next two weeks. Further development on the TurboGears 1.1 branch depends on community feedback, which we plan to collect by conducting an online survey amongst TurboGears users. You may expect a separate announcement for this very soon! Share & enjoy! -- Christopher Arndt <sysadmin(a)turbogears.org> TurboGears Systems Administrator http://www.turbogears.org/

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[ANN] stdeb 0.3.2 and 0.4.1
by Andrew Straw 04 Oct '09

04 Oct '09

stdeb produces Debian source packages from Python packages via a new distutils command, sdist_dsc. Automatic defaults are provided for the Debian package, but many aspects of the resulting package can be customized via a configuration file. An additional command, bdist_deb, creates a Debian binary package, a .deb file. stdeb: http://github.com/astraw/stdeb This email announces releases 0.3.2 and 0.4.1. release 0.4.1 download: http://pypi.python.org/pypi/stdeb/0.4.1 release 0.3.2 download: http://pypi.python.org/pypi/stdeb/0.3.2 Release 0.4.1 adds new features, conveniences and bug fixes to the recently released, but unannounced 0.4 release. These two releases move stdeb to use debhelper 7 (and therefore require at least Ubuntu Intrepid, Debian Lenny, or the use of backports). This use of debhelper 7 allows the auto-generated debian/rules file to be greatly simplified. stdeb 0.4 also switches to python-support from pycentral. If you do not need to migrate packages from earlier versions of stdeb, it is recommended to use the "--pycentral-backwards-compatibility=false" command-line argument. See the changelog[1] and release notes[2] for more information. [1] http://github.com/astraw/stdeb/blob/release-0.4.1/CHANGELOG.txt [2] http://github.com/astraw/stdeb/blob/release-0.4.1/RELEASE_NOTES.txt Release 0.3.2 (and the unannounced 0.3.1) are maintenance releases for the old-stable branch, which works with older distributions such as Ubuntu Hardy. These releases added the bdist_deb command. See the changelog[3] for more information. [3] http://github.com/astraw/stdeb/blob/release-0.3.2/CHANGELOG.txt As always, the venue for discussion of stdeb is the distutils mailing list at http://mail.python.org/mailman/listinfo/distutils-sig Thanks to all who have helped stdeb for these and previous releases: Authors ------- * Andrew Straw <strawman(a)astraw.com> * Pedro Algarvio, aka, s0undt3ch <ufs(a)ufsoft.org> * Gerry Reno (initial bdist_deb implementation) Additional Credits ------------------ * Zooko O'Whielacronx for the autofind-depends patch * Brett (last name unknown) for the --ignore-install-requires patch * Ximin Luo for a bug fix * Alexander D. Sedov for bug fixes and suggestions * GitHub for hosting services. * WebFaction (aka python-hosting) for previous hosting services. -Andrew

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ANN: pyvm 2.0
by Stelios Xanthakis 03 Oct '09

03 Oct '09

Hi. After a long period, the next version of pyvm is finally out! pyvm is a small hobby project that's based on a vm that is a cousin of Python and attempts to reimplement a full userspace system with the use of a monolithic toolchain with internal APIs. The result is a very compact codebase which partly implements many userspace applications. However, the project is not suitable for simple users. It is an on-going half-finished project that might interest other programmers. Currently the source code works only in x86/linux (32bit). The homepage is http://students.ceid.upatras.gr/~sxanth/pyvm-2.0/

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Fast decimal arithmetic module released
by Stefan Krah 03 Oct '09

03 Oct '09

[As requested, repost from comp.lang.python] Hi, today I have released the following packages for fast arbitrary precision decimal arithmetic: 1. libmpdec ============ Libmpdec is a C (C++ ready) library for arbitrary precision decimal arithmetic. It is a complete implementation of Mike Cowlishaw's General Decimal Arithmetic specification. 2. fastdec.so ============== Fastdec.so is a Python C module with the same functionality as decimal.py. With some restrictions, code written for for decimal.py should work identically. 3. deccheck.py =============== deccheck.py performs redundant calculations using both decimal.py and fastdec.so. For each calculation the results of both modules are compared and an exception is raised if they differ. This module was mainly developed for testing, but could in principle be used for redundant calculations in general. Correctness ============ Libmpdec passes IBM's official test suite and a multitude of additional tests. Fastdec.so passes (with minor modifications) all Python unit tests. When run directly, deccheck.py performs very exhaustive tests that compare fastdec.so with decimal.py. All tests complete successfully under Valgrind. Speed ====== In a couple of initial benchmarks, libmpdec compares very well against decNumber and the Intel decimal library. For very large numbers, the speed is roughly the same as the speed of the apfloat library. Fastdec.so compares quite well against gmpy and even native Python floats. In the benchmarks, it is significantly faster than Java's BigDecimal class. Portability ============ All tests have been completed on Linux 64/32-bit, Windows 64/32-bit, OpenSolaris 32-bit, OpenBSD 32-bit and Debian Mips 32-bit. For 32-bit platforms there is a pure ANSI C version, 64 bit platforms require a couple of asm lines. Further information and downloads at: http://www.bytereef.org/libmpdec.html Stefan Krah

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[ANN]Uliweb 0.0.1a1 released!
by limodou 02 Oct '09

02 Oct '09

===================== Uliweb Introduction ===================== :Author: Limodou <limodou(a)gmail.com> .. contents:: About Uliweb ---------------- Uliweb is a relatively new Python based web framework. Before I started to create this framework,I had used a few other frameworks such as Karrigell, Cherrypy, Django and web2py, but they did not satisfy my needs due to several reasons. I then decided to create a web framework that combined the strengths of these frameworks, keeping in mind that the main focus is to make Uliweb easy to use yet powerful. This project was created and lead by Limodou <limodou(a)gmail.com>. It is in constant development from several other developers around the world. License ------------ Uliweb is released under GPL v2 license. Infrastructure ---------------- Uliweb was not created totally from scratch. It uses some modules created by other developers, for example: * `Werkzeug <http://werkzeug.pocoo.org/>`_ Used to handle core processes in the framework. For example: command line tools , URL Mapping, Debug, etc. * `SqlAlchemy <http://www.sqlalchemy.org>`_ The ORM based on it. Developers can access databases, or use the module separately. I also referenced some code from other web frameworks, for example: * The Templating system is styled after the one used in `web2py <http://mdp.cti.depaul.edu/>`_ several improvements were made. I also constructed a few new "wheels" myself. For example: * Form processing module. Developers can use it to create HTML code, validate submitted data and convert submitted data to Python data types. * I18n processing including template support, language lazy process. * Uliorm, which is an ORM module, was built on top of SqlAlchemy. I also referenced from GAE datastore module. * Framework runtime process. * Plugin mechanism, styled after the one used in the `UliPad <http://code.google.com/p/ulipad>`_ project. Features ----------- * Organization * MVT(Model View Template) development model. * Distributed development but unified management. Uliweb organizes a project with small apps. Each app can have its own configuration file(settings.ini), template directory, and static directory. Existing apps can be easily reused, but are treated as a compound. web application project if configured as such. Developers can also reference static files and templates between apps, thus easing inter-application data exchange. All apps in a project are loaded by default if INSTALLED_APPS is not configured in the configuration file. All separate app configuration files are automatically processed at project startup. * URL Mapping * Flexiable and powerful URL mapping. Uliweb uses werkzeug's routing module. User can easily define a URL, which in turn can be easily bound with a view function. URLs can also be created reversely according to the view function name. It supports argument definitions in URLs and default URL mapping to a view function. * View and Template * View templates can be automatically applied. If you return a dict variable from view function, Uliweb will automatically try to match and apply a template according to the view function name. * Environment execution mode. Each view function will be run in an environment, which eliminates the need to write many import statements. Plus there are already many objects that can be used directly, for example: request, response, etc. This is DRY and saves a lot of coding * Developers can directly use Python code in a template, the Python code does not neede to be indented as long as a pass statement is added at the end of each code block. Uliweb also supports child template inclusion and inheritance. * ORM * Uliorm is the default ORM module but not configured by default. Developers are free to use any ORM module as preferred. * Uliorm supports model creation and automatic database migiration(table creation and table structure modification). * I18n * Can be used in python and template files. * Browser language and cookie settings are supported including automatic language switching. * Provides a command line tool that developers can use to extract .po files. This can happen either at the app level or project level process. It can automatically merge .pot files to existing .po files. * Extension * Dispatch extension. This is a dispatch processing mechanism that utilizes different types of dispatch points. So you can write procedures to carry out special processes and bind them to these dispatch points. For example, database initicalization, I18n process initialization, etc. * middleware extension. It's similar to Djangos. You can configure it in configuration files. Each middleware can process the request and response objets. * Special function calls in the views module initial process. If you write a special function named __begin__, it'll be processed before any view function can be processed, this allows developers to do some module level processing at that point, for example: check the user authentication, etc. * Command Line Tools * Export a clean working environment to an assigned directory. * Create app, and include the basic essential directory structure, files and code. * Export static files, you can export all available apps' static files to a special directory. * Startup a development web server thats supports debugging and autoreload. * Several project and app management tools. * Deployment * Supports easy deployment on the GAE platform. * Supports mod_wsgi, cgi, fast_cgi, scgi. * Development * Provide a development server, and can be automatically reload when some module files are modified. * Enhanced debugging, you can check the error traceback, template debugging is also supported. * Misc. * Various demos are available for anyone interested in learning more about Uliweb. It includes all core codes and also all source code of `uliwebproject <http://uliwebproject.appspot.com>`_ , and some other demo codes, which can be used directly/freely as you wish. * Uliweb supports static file access directly, and it can also process HTTP_IF_MODIFIED_SINCE. Goals ---------- * Simple and easy to use web framework. * The web framework should be flexiable and easy to extend. * The web framework should be able to be deployed in different platforms. * Provision of enough sample code. * Provision of concise and easy to understand documentation. -- I like python! UliPad <<The Python Editor>>: http://code.google.com/p/ulipad/ UliWeb <<simple web framework>>: http://uliwebproject.appspot.com My Blog: http://hi.baidu.com/limodou

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ANN: Humerus 2.1
by Greg Ewing 02 Oct '09

02 Oct '09

Humerus 2.1 is now available: http://www.cosc.canterbury.ac.nz/greg.ewing/python/Albow/Humerus-2.1.0.zip Online documentation: http://www.cosc.canterbury.ac.nz/greg.ewing/python/Albow/Humerus-2.1.0/doc/ In this version, the code for handling levels has been separated out into a new pair of classes. This makes it easier to use Humerus for games that don't have levels. What is Humerus? ---------------- Humerus is a companion to the Albow widget library for PyGame. It provides a framework for games made up of a sequence of levels, including user interface and back-end logic for saving and restoring game state, loading levels, and sundry other details. There is also optional support for a built-in level editor, including code for loading and saving levels to be edited, and asking whether to save modified levels. Albow can be found here: http://www.cosc.canterbury.ac.nz/greg.ewing/python/Albow/

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[ANN] SciPy India conference in Dec. 2009
by Prabhu Ramachandran 01 Oct '09

01 Oct '09

Greetings, The first "Scientific Computing with Python" conference in India (http://scipy.in) will be held from December 12th to 17th, 2009 at the Technopark in Trivandrum, Kerala, India (http://www.technopark.org/). The theme of the conference will be "Scientific Python in Action" with respect to application and teaching. We are pleased to have Travis Oliphant, the creator and lead developer of numpy (http://numpy.scipy.org) as the keynote speaker. Here is a rough schedule of the conference: Sat. Dec. 12 (conference) Sun. Dec. 13 (conference) Mon. Dec. 14 (tutorials) Tues. Dec. 15 (tutorials) Wed. Dec. 16 (sprint) Thu. Dec. 17 (sprint) The tutorial sessions will have two tracks, one specifically for teachers and one for the general public. There are no registration fees. Please register at: http://scipy.in The call for papers will be announced soon. This conference is organized by the FOSSEE project (http://fossee.in) funded by the Ministry of Human Resources and Development's National Mission on Education (NME) through Information and Communication Technology (ICT) jointly with SPACE-Kerala (http://www.space-kerala.org). Regards, Prabhu Ramachandran and Jarrod Millman

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Elixir 0.7.0 released!
by Gaetan de Menten 01 Oct '09

01 Oct '09

I am very pleased to announce that version 0.7.0 of Elixir (http://elixir.ematia.de) is now available. As always, feedback is very welcome, preferably on Elixir mailing list. This release incorporates many small improvements and bug fixes across the board. Please look at http://elixir.ematia.de/trac/wiki/Migrate06to07 for detailed upgrade notes. The most relevant changes are probably: * Support for the 0.6 branch of SQLAlchemy. * A way to set default options on custom base classes so that their children inherit from them. * A change to the naming pattern used for the columns of self-referencial ManyToMany relationship. * A couple of new extensions to add data or execute custom DDL upon table creation. The full list of changes can be seen at: http://elixir.ematia.de/trac/browser/elixir/tags/0.7.0/CHANGES What is Elixir? --------------------- Elixir is a declarative layer on top of the SQLAlchemy library. It is a fairly thin wrapper, which provides the ability to create simple Python classes that map directly to relational database tables (this pattern is often referred to as the Active Record design pattern), providing many of the benefits of traditional databases without losing the convenience of Python objects. Elixir is intended to replace the ActiveMapper SQLAlchemy extension, and the TurboEntity project but does not intend to replace SQLAlchemy's core features, and instead focuses on providing a simpler syntax for defining model objects when you do not need the full expressiveness of SQLAlchemy's manual mapper definitions. Mailing list ---------------- http://groups.google.com/group/sqlelixir/about

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csound ifn parser and tools 1.04
by edexter 01 Oct '09

01 Oct '09

csound ifn parser 1.04 ifn parser is a parser to help in combing csound instruments also tools that may be usefull for code editors including a ifn number locater and a depreceated csound command locater. The ifn number, and depreceated number list may be usefull regardless of the programming language http://dexrowem.blogspot.com/search?q=ifn+parser

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New Book: Programming in Python 3 (Second Edition)
by Mark Summerfield 01 Oct '09

01 Oct '09

Hi, A new edition of my Python 3 book will be available in the U.S. next month, and elsewhere in December or January: "Programming in Python 3 (Second Edition): A Complete Introduction to the Python Language" ISBN 0321680561 http://www.qtrac.eu/py3book.html The book is aimed at a wide audience, but assumes some programming experience (not necessarily Python, not necessarily object-oriented). It teaches solid procedural style programming, then builds on that to teach solid object-oriented programming, and then goes on to more advanced topics (e.g., including a nice way to create validated attributes by combining class decorators with descriptors). But even newcomers to Python 3 should be able to write useful (although small and basic) programs after reading chapter 1, and then go on to create larger and more sophisticated programs as they work through the chapters. The book has been fully revised and updated and now covers Python 3.0 and 3.1, and has been extended with new chapters on debugging, testing, and profiling, and on parsing (including coverage of the PyParsing and PLY modules), as well as a new section on coroutines in the advanced chapter. I was motivated to produce a second edition so soon after the first because it seems to me that Python's core developers would rather people switched to the 3.1 series and bypass 3.0 altogether and I wanted to support that. -- Mark Summerfield, Qtrac Ltd, www.qtrac.eu C++, Python, Qt, PyQt - training and consultancy "Programming in Python 3 (Second Edition)" - ISBN 0321680561

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[ANN] BleachBit 0.6.5 released
by Andrew Ziem 01 Oct '09

01 Oct '09

BleachBit (pure PyGTK) deletes traces of online activity, and you may be surprised how much disk space it frees up. Highlight of changes since 0.6.4: * Vacuum Google Chrome * Delete Google Chrome 3 browsing history * Add portable app for Windows * Introduce the bonus cleaners package with 9 cleaners * Update translations * Fix bugs Detailed release notes http://bleachbit.sourceforge.net/news/bleachbit-065-released Download http://bleachbit.sourceforge.net/download

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