Mailman 3 November 2010 - Python-announce-list

ANN: cssutils 0.9.7final
by Christof 28 Nov '10

28 Nov '10

what is it ---------- A Python package to parse and build CSS Cascading Style Sheets. (Not a renderer though!) about this release ------------------ 0.9.7 is the final 0.9.7 release. Work on 0.9.8 has begun. main changes ------------ No real change but CSSValue and related classes will not be supported in 0.9.8 anymore. 0.9.8 will feature a simplified API. Please follow its development if you need any currently supported or new feature. Thanks! 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 and higher or Jython 2.5 and higher (tested with Python 2.7(x64), 2.6.5(x64), 2.5.4(x32), 2.4.4(x32) and Jython 2.5.1 on Win7x64 only) Bug reports (via Google code), comments, etc are very much appreciated! Thanks. Christof

1 0

[RELEASED] Python 3.1.3
by Benjamin Peterson 28 Nov '10

28 Nov '10

On behalf of the Python development team, I'm happy as a lark to announce the third bugfix release for the Python 3.1 series, Python 3.1.3. This bug fix release features numerous bug fixes and documentation improvements over 3.1.2. The Python 3.1 version series focuses on the stabilization and optimization of the features and changes that Python 3.0 introduced. For example, the new I/O system has been rewritten in C for speed. File system APIs that use unicode strings now handle paths with undecodable bytes in them. Other features include an ordered dictionary implementation, a condensed syntax for nested with statements, and support for ttk Tile in Tkinter. For a more extensive list of changes in 3.1, see http://doc.python.org/3.1/whatsnew/3.1.html or Misc/NEWS in the Python distribution. This is a production release. To download Python 3.1.3 visit: http://www.python.org/download/releases/3.1.3/ A list of changes in 3.1.3 can be found here: http://svn.python.org/projects/python/tags/r313/Misc/NEWS The 3.1 documentation can be found at: http://docs.python.org/3.1 Bugs can always be reported to: http://bugs.python.org Enjoy! -- Benjamin Peterson Release Manager benjamin at python.org (on behalf of the entire python-dev team and 3.1.3's contributors)

1 0

[RELEASED] Python 2.7.1
by Benjamin Peterson 28 Nov '10

28 Nov '10

On behalf of the Python development team, I'm happy as a clam to announce the immediate availability of Python 2.7.1. 2.7 includes many features that were first released in Python 3.1. The faster io module, the new nested with statement syntax, improved float repr, set literals, dictionary views, and the memoryview object have been backported from 3.1. Other features include an ordered dictionary implementation, unittests improvements, a new sysconfig module, auto-numbering of fields in the str/unicode format method, and support for ttk Tile in Tkinter. For a more extensive list of changes in 2.7, see http://doc.python.org/dev/whatsnew/2.7.html or Misc/NEWS in the Python distribution. To download Python 2.7.1 visit: http://www.python.org/download/releases/2.7.1/ The 2.7.1 changelog is at: http://svn.python.org/projects/python/tags/r271/Misc/NEWS 2.7 documentation can be found at: http://docs.python.org/2.7/ This is a production release. Please report any bugs you find to the bug tracker: http://bugs.python.org/ Enjoy! -- Benjamin Peterson Release Manager benjamin at python.org (on behalf of the entire python-dev team and 2.7.1's contributors)

1 0

Camelot 10.11.27 : leverage Python, QT and SQLAlchemy
by erikj 27 Nov '10

27 Nov '10

Dear all, Camelot 10.11.27 has been released. Camelot is an open source RAD framework that leverages Python, Sqlalchemy and Qt to build database applications. Inspired by the Django admin interface, Camelot allows a developer to define the database model and Camelot will create the views. Homepage : www.python-camelot.com Demonstration video : http://www.youtube.com/watch?v=HZ5i257N6cc Regards, Erik New in this release : - tab based desktop - faster table view - improved search queries - much more dynamic field attributes : tooltip, background_color, editable, choices, prefix, suffix, arrow - SQLAlchemy 0.6.x support - Matplotlib integration - move to new style signal/slot connections - frozen columns in a table view

1 0

PyPy 1.4 released
by Maciej Fijalkowski 26 Nov '10

26 Nov '10

=============================== PyPy 1.4: Ouroboros in practice =============================== We're pleased to announce the 1.4 release of PyPy. This is a major breakthrough in our long journey, as PyPy 1.4 is the first PyPy release that can translate itself faster than CPython. Starting today, we are using PyPy more for our every-day development. So may you :) You can download it here: http://pypy.org/download.html What is PyPy ============ PyPy is a very compliant Python interpreter, almost a drop-in replacement for CPython. It's fast (`pypy 1.4 and cpython 2.6`_ comparison) Among its new features, this release includes numerous performance improvements (which made fast self-hosting possible), a 64-bit JIT backend, as well as serious stabilization. As of now, we can consider the 32-bit and 64-bit linux versions of PyPy stable enough to run `in production`_. Numerous speed achievements are described on `our blog`_. Normalized speed charts comparing `pypy 1.4 and pypy 1.3`_ as well as `pypy 1.4 and cpython 2.6`_ are available on benchmark website. For the impatient: yes, we got a lot faster! More highlights =============== * PyPy's built-in Just-in-Time compiler is fully transparent and automatically generated; it now also has very reasonable memory requirements. The total memory used by a very complex and long-running process (translating PyPy itself) is within 1.5x to at most 2x the memory needed by CPython, for a speed-up of 2x. * More compact instances. All instances are as compact as if they had ``__slots__``. This can give programs a big gain in memory. (In the example of translation above, we already have carefully placed ``__slots__``, so there is no extra win.) * `Virtualenv support`_: now PyPy is fully compatible with virtualenv_: note that to use it, you need a recent version of virtualenv (>= 1.5). * Faster (and JITted) regular expressions - huge boost in speeding up the `re` module. * Other speed improvements, like JITted calls to functions like map(). .. _virtualenv: http://pypi.python.org/pypi/virtualenv .. _`Virtualenv support`: http://morepypy.blogspot.com/2010/08/using-virtualenv-with-pypy.html .. _`in production`: http://morepypy.blogspot.com/2010/11/running-large-radio-telescope-software… .. _`our blog`: http://morepypy.blogspot.com .. _`pypy 1.4 and pypy 1.3`: http://speed.pypy.org/comparison/?exe=1%2B41,1%2B172&ben=1,2,3,4,5,6,7,8,9,… .. _`pypy 1.4 and cpython 2.6`: http://speed.pypy.org/comparison/?exe=2%2B35,1%2B172&ben=1,2,3,4,5,6,7,8,9,… Cheers, Carl Friedrich Bolz, Antonio Cuni, Maciej Fijalkowski, Amaury Forgeot d'Arc, Armin Rigo and the PyPy team

1 0

PyUseCase 3.4.1: Python GUI test tool
by Geoff Bache 26 Nov '10

26 Nov '10

Hi all, 3.4.1 is mostly bugfixes related to PyGTK, although some internal reorganisation and minor API changes are also included. Also proof of concept support for Hildon extension to PyGTK, the GUI used on Nokia's Maemo phones and restored support for Python 2.5 which was dropped in 3.4 and then regretted. Regards, Geoff Bache A bit more detail: PyUseCase is an unconventional GUI testing tool for PyGTK,Tkinter and wxPython, along with a framework for testing Python GUIs in general. Instead of recording GUI mechanics directly, it asks the user for descriptive names and hence builds up a "domain language" along with a "UI map file" that translates this language into actions on the current GUI widgets. The point is to reduce coupling, allow very expressive tests, and ensure that GUI changes mean changing the UI map file but not all the tests. Instead of an "assertion" mechanism, it auto-generates a log of the GUI appearance and changes to it. The point is then to use that as a baseline for text-based testing, using e.g. TextTest. It also includes support for instrumenting code so that "waits" can be recorded, making it far easier for a tester to record correctly synchronized tests without having to explicitly plan for this. Homepage: http://www.texttest.org/index.php?page=ui_testing Download: http://sourceforge.net/projects/pyusecase Mailing list: https://lists.sourceforge.net/lists/listinfo/pyusecase-users (new) Bugs: https://bugs.launchpad.net/pyusecase/ Source: https://code.launchpad.net/pyusecase/

1 0

tox-0.9: better CI bootstrapping / custom PyPI index servers
by holger krekel 25 Nov '10

25 Nov '10

Hi all, i just released tox-0.9, the generic virtualenv-using test integration automation tool (tm). This release brings a new zero-install way to deploy tox and your test suite on Hudson slaves. Apart from one or more Python interpreters you do not need anything on the slave side, see here for details: http://codespeak.net/tox/example/hudson.html#zero-installation-for-slaves Moreover, you can now work with multiple PyPI index servers which is very nice if you (want to) operate your own in-company servers, see here for details: http://codespeak.net/tox/example/basic.html#using-a-different-default-pypi-… Btw, what kind of custom servers are you successfully using? (tell me on twitter @hpk42 if you like). Oh, and for basic info just go to http://codespeak.net/tox if that wasn't clear yet. have fun, holger Changelog for 0.9 ----------------------- - added support for working with different and multiple PYPI indexservers. - fix pip-installation mixups by always unsetting PIP_RESPECT_VIRTUALENV (thanks Armin Ronacher) - issue1: Add a toxbootstrap.py script for tox, thanks to Sridhar Ratnakumar - new option: -r|--recreate to force recreation of virtualenv - show logfile content if there is an error (makes CI output more readable) - depend on py>=1.4.0 which does not contain or install the py.test anymore which is now a separate distribution "pytest".

1 0

pytest-2.0: asserts++, unittest++, reporting++, config++, docs++
by holger krekel 25 Nov '10

25 Nov '10

py.test 2.0.0: asserts++, unittest++, reporting++, config++, docs++ =========================================================================== Welcome to pytest-2.0.0, a major new release of "py.test", the rapid easy Python testing tool. There are many new features and enhancements, see below for summary and detailed lists. A lot of long-deprecated code has been removed, resulting in a much smaller and cleaner implementation. See the new docs with examples here: http://pytest.org/ I also just released pytest-xdist-1.5, the plugin for distributed testing - which was successfully used to speed up a real-life unittest suite 4-times written for (twisted) trial, thanks to the generic unittest integration improvements. See here for docs and install instructions: http://pypi.python.org/pypi?:action=display&name=pytest-xdist A note on packaging: pytest used to part of the "py" distribution up until version py-1.3.4 but this has changed now: pytest-2.0.0 only contains py.test related code and is expected to be backward-compatible to existing test code. If you want to install pytest, just type one of:: pip install -U pytest easy_install -U pytest Many thanks to all issue reporters and people asking questions or complaining. Particular thanks to Floris Bruynooghe and Ronny Pfannschmidt for their great coding contributions and many others for feedback and help. best, holger krekel New Features ----------------------- - new invocations through Python interpreter and from Python:: python -m pytest # on all pythons >= 2.5 or from a python program:: import pytest ; pytest.main(arglist, pluginlist) see http://pytest.org/2.0.0/usage.html for details. - new and better reporting information in assert expressions if comparing lists, sequences or strings. see http://pytest.org/2.0.0/assert.html#newreport - new configuration through ini-files (setup.cfg or tox.ini recognized), for example:: [pytest] norecursedirs = .hg data* # don't ever recurse in such dirs addopts = -x --pyargs # add these command line options by default see http://pytest.org/2.0.0/customize.html - improved standard unittest support. In general py.test should now better be able to run custom unittest.TestCases like twisted trial or Django based TestCases. Also you can now run the tests of an installed 'unittest' package with py.test:: py.test --pyargs unittest - new "-q" option which decreases verbosity and prints a more nose/unittest-style "dot" output. - many many more detailed improvements details Fixes ----------------------- - fix issue126 - introduce py.test.set_trace() to trace execution via PDB during the running of tests even if capturing is ongoing. - fix issue124 - make reporting more resilient against tests opening files on filedescriptor 1 (stdout). - fix issue109 - sibling conftest.py files will not be loaded. (and Directory collectors cannot be customized anymore from a Directory's conftest.py - this needs to happen at least one level up). - fix issue88 (finding custom test nodes from command line arg) - fix issue93 stdout/stderr is captured while importing conftest.py - fix bug: unittest collected functions now also can have "pytestmark" applied at class/module level Important Notes -------------------- * The usual way in pre-2.0 times to use py.test in python code was to import "py" and then e.g. use "py.test.raises" for the helper. This remains valid and is not planned to be deprecated. However, in most examples and internal code you'll find "import pytest" and "pytest.raises" used as the recommended default way. * pytest now first performs collection of the complete test suite before running any test. This changes for example the semantics of when pytest_collectstart/pytest_collectreport are called. Some plugins may need upgrading. * The pytest package consists of a 400 LOC core.py and about 20 builtin plugins, summing up to roughly 5000 LOCs, including docstrings. To be fair, it also uses generic code from the "pylib", and the new "py" package to help with filesystem and introspection/code manipulation. (Incompatible) Removals ----------------------------- - py.test.config is now only available if you are in a test run. - the following (mostly already deprecated) functionality was removed: - removed support for Module/Class/... collection node definitions in conftest.py files. They will cause nothing special. - removed support for calling the pre-1.0 collection API of "run()" and "join" - removed reading option values from conftest.py files or env variables. This can now be done much much better and easier through the ini-file mechanism and the "addopts" entry in particular. - removed the "disabled" attribute in test classes. Use the skipping and pytestmark mechanism to skip or xfail a test class. - py.test.collect.Directory does not exist anymore and it is not possible to provide an own "Directory" object. If you have used this and don't know what to do, get in contact. We'll figure someting out. Note that pytest_collect_directory() is still called but any return value will be ignored. This allows to keep old code working that performed for example "py.test.skip()" in collect() to prevent recursion into directory trees if a certain dependency or command line option is missing. see :ref:`changelog` for more detailed changes. --

1 0

execnet-1.0.9: small refinements
by holger krekel 25 Nov '10

25 Nov '10

Hi all, just released execnet-1.0.9, the rapid multi-Python deployment library. 1.0. contains some small additions and refinements, mostly implemented by Ronny Pfannschmidt. See the docs fore more info: http://codespeak.net/execnet cheers, holger 1.0.9 -------------------------------- - add gw.reconfigure() to configure per gateway options. Currently supported: py2str_as_py3str and py3str_as_py2str to configure string deserialization - channel.makefile() objects now have a isatty() returning False - group.allocate_id(spec) allows to early-determine an (automatic) id - internal refactorings and cleanups (thanks Ronny Pfannschmidt): - refactor message types into received handler functions - refactor b(chr(opcode)) to bchr(opcode) - reorder Message ctor args, rename msgtype to msgcode - refactor gateway.send to take message's init args instead of a message - inline and remove Message.writeto/readfrom - refactor collection loading to avoid the indirection over tuple - remove the unused NamedThreadPool

1 0

[ANN] PythonWebkit bindings for WebkitDFB
by Luke Kenneth Casson Leighton 25 Nov '10

25 Nov '10

WebkitDFB is an experimental port to allow the webkit web browser engine to use DirectFB (http://directfb.org). It is lightning-quick to start up (no large widget set to load), yet has the potential to provide full HTML5 functionality. The PythonWebkit project, http://www.gnu.org/software/pythonwebkit brings 300+ DOM objects and 2,000+ fully W3C-compliant python-based DOM functions to webkit, making python effectively a peer of javascript (doc.body.style, getElementsByTagName, appendChild, setTimeout, XMLHttpRequest, onclick etc.) These two projects have been brought together in the same source repository. If startup time and CPU usage is important (as it is on embedded systems) then please do consider helping with WebkitDFB by funding its ongoing development and/or helping Denis out. If startup time and CPU usage and _python_ are important... :) in this rather short announcement, it's easy to miss the significance: yes, webkit the web browser engine, directfb the direct framebuffer engine, and python the utterly cool and beautiful programming language have been combined into the same package and sentence. more information at http://www.gnu.org/software/pythonwebkit. l.

1 0