Mailman 3 April 2013 - Python-announce-list

New release 0.19 of the Cython compiler
by Stefan Behnel May 6, 2013

May 6, 2013

I'm happy to announce that Cython 0.19 has been released. This is a feature release of the Cython compiler that adds some major usability improvements especially for code that needs to run in both Py2 and Py3, as well as better Python compatibility and optimisations. http://cython.org/ You can get it from here: http://cython.org/release/Cython-0.19.tar.gz http://cython.org/release/Cython-0.19.zip Release notes: https://github.com/cython/cython/blob/29bf3493fdc80cb3261a9dfb9f73e3ccd46fe… Documentation: http://docs.cython.org/ Major new features in this release: =========================== * New directives ``c_string_type`` and ``c_string_encoding`` to automatically convert between C strings and the different Python string types. * Keyword arguments are supported for cdef functions, including external C/C++ library functions. * New freelist decorator for extension types. * Fast extension type instantiation using the ``Type.__new__(Type)`` idiom has gained support for passing arguments. * Slicing was optimised for several builtin types and otherwise conforms better with Python semantics for user defined types. * The mapping of dict view/item methods in Python 3 was improved. What is Cython? =============== Cython is an optimising static compiler for both the Python programming language and the extended Cython programming language (based on Pyrex). It makes writing C extensions for Python as easy as Python itself. The Cython language is a superset of the Python language that additionally supports calling C functions and declaring C types on variables and class attributes. This allows the compiler to generate very efficient C code from Cython code. The C code is generated once and then compiles with all major C/C++ compilers in CPython 2.4 and later, including Python 3.x. All of this makes Cython the ideal language for wrapping external C libraries, embedding CPython into existing applications, and for fast C modules that speed up the execution of Python code. See the project home page for further information: http://cython.org/ Have fun, Stefan

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devpi-server: lightning fast pypi.python.org proxy (0.7 initial release)
by holger krekel April 30, 2013

April 30, 2013

devpi-server: lightning-fast pypi.python.org proxy (0.7 initial) ================================================================= This is the initial release of devpi-server, an easy-to-use caching proxy server for pypi.python.org, providing fast and reliable installs when used by pip or easy_install. devpi-server offers features not found in other PyPI proxy servers: - transparent caching of pypi.python.org index and release files on first access, including indexes and files from 3rd party sites. - pip/easy_install/buildout are shielded from the typical client-side crawling, thus providing lightning-fast and reliable installation (on second access of a package). - ``devpi-server`` moreover automatically updates its main index cache using pypi's changelog protocol, making sure you'll always see an up-to-date view of what's available. devpi-server is designed to satisfy all needs arising from pip/easy_install installation operations and can thus act as the sole entry point for all package installation interactions. It will manage all outbound traffic for installing packages. Getting started ---------------------------- Simply install ``devpi-server`` via for example:: pip install devpi-server # or easy_install devpi-server Make sure you have the ``redis-server`` binary available and issue:: devpi-server after which a http server is running on ``localhost:3141`` and you can use the following index url with pip or easy_install:: pip install -i http://localhost:3141/ext/pypi/simple/ ... easy_install -i http://localhost:3141/ext/pypi/simple/ ... To avoid having to re-type the URL, you can configure pip by either setting the environment variable ``PIP_INDEX_URL`` to ``http://localhost:3141/ext/pypi/simple/`` or by putting an according entry in your ``$HOME/.pip/pip.conf`` (posix) or ``$HOME/pip/pip.conf`` (windows):: [global] index-url == http://localhost:3141/ext/pypi/simple/ Example timing ---------------- Here is a little screen session when using a fresh ``devpi-server`` instance, installing itself in a fresh virtualenv:: hpk@teta:~/p/devpi-server$ virtualenv devpi >/dev/null hpk@teta:~/p/devpi-server$ source devpi/bin/activate (devpi) hpk@teta:~/p/devpi-server$ time pip install -q \ -i http://localhost:3141/ext/pypi/simple/ devpi-server real 21.971s user 1.564s system 0.420s So that took 21 seconds. Now lets remove the virtualenv, recreate it and install a second time:: (devpi) hpk@teta:~/p/devpi-server$ rm -rf devpi (devpi) hpk@teta:~/p/devpi-server$ virtualenv devpi >/dev/null (devpi)hpk@teta:~/p/devpi-server$ time pip install -q -i http://localhost:3141/ext/pypi/simple/ devpi-server real 1.716s user 1.152s system 0.472s Ok, that was more than 10 times faster. The install of ``devpi-server`` (0.7) involves five packages btw: ``beautifulsoup4, bottle, py, redis, requests``. Compatibility -------------------- ``devpi-server`` works with python2.6 and python2.7 on both Linux and Windows environments. Windows support is somewhat experimental -- better don't run a company wide server with it. OSX is untested as of now but no issues are expected -- please report back how things work in reality. ``devpi-server`` requires ``redis-server`` with versions 2.4 or later. Earlier versions may or may not work (untested). Deployment notes ---------------------------- By default, devpi-server configures and starts its own redis instance. For this it needs to find a ``redis-server`` executable. On windows it will, in addition to the PATH variable, also check for ``c:\\program files\redis\redis-server.exe`` which is the default install location for the `windows redis fork installer <https://github.com/rgl/redis/downloads>`_. In a consolidated setting you might want to use the ``--redismode=manual`` and ``--redisport NUM`` options to rather control the setup of redis yourself. You might also want to use the ``--datadir`` option to specify where release files will be cached. Lastly, if you run ``devpi-server`` in a company network, you can for example proxy-serve the application through an nginx site configuration like this:: # sample nginx conf server { server_name your.server.name; listen 80; root /home/devpi/.devpi/httpfiles/; # arbitrary for now location / { proxy_pass http://localhost:3141; proxy_set_header X-Real-IP $remote_addr; } } command line options --------------------- A list of all devpi-server options:: $ devpi-server -h Usage: devpi-server [options] Options: -h, --help show this help message and exit main options: --version show devpi_version (0.7) --datadir=DIR data directory for devpi-server [~/.devpi/serverdata] --port=PORT port to listen for http requests [3141] --redisport=PORT redis server port number [3142] --redismode=auto|manual whether to start redis as a sub process [auto] --bottleserver=TYPE bottle server class, you may try eventlet or others [wsgiref] --debug run wsgi application with debug logging pypi upstream options: --pypiurl=url base url of remote pypi server [https://pypi.python.org/] --refresh=SECS periodically pull changes from pypi.python.org [60] Project status and next steps ----------------------------- ``devpi-server`` is considered beta because it's just an initial release. It is is tested through tox and has all of its automated pytest suite passing for python2.7 and python2.6 on Ubuntu 12.04 and Windows 7. ``devpi-server`` is actively developed and is bound to see more releases in 2013, in particular for supporting private indexes and a new development and testing workflow system. You are very welcome to join, discuss and contribute: * mailing list: https://groups.google.com/d/forum/devpi-dev * repository: http://bitbucket.org/hpk42/devpi-server * issues: http://bitbucket.org/hpk42/devpi-server/issues * irc: for now on #pylib on irc.freenode.net. * pypi home page: https://pypi.python.org/pypi/devpi-server

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New TkinterDnd URL
by klappnase April 30, 2013

April 30, 2013

The TkinterDnD Project has permanently moved to sourceforge and is now available at http://tkinterdnd.sourceforge.net/ . TkinterDnD is a python wrapper for George Petasis' tkDnD Tk extension. tkDnD adds native drag and drop support for windows and (yet partially) unix and Mac OSX to Tk. TkinterDnD makes this functionality available for Python/Tkinter. The Python wrapper modules for both the current tkdnd-2 series and the now outdated tkdnd-1 version can be downloaded at https://sourceforge.net/projects/tkinterdnd/files/ .

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pytest-2.3.5: bug fixes and little improvements
by holger krekel April 30, 2013

April 30, 2013

pytest-2.3.5: bug fixes and little improvements =========================================================================== pytest-2.3.5 is a maintenance release with many bug fixes and little improvements. See the changelog below for details. No backward compatibility issues are foreseen and all plugins which worked with the prior version are expected to work unmodified. Speaking of which, a few interesting new plugins saw the light last month: - pytest-instafail: show failure information while tests are running - pytest-qt: testing of GUI applications written with QT/Pyside - pytest-xprocess: managing external processes across test runs - pytest-random: randomize test ordering And several others like pytest-django saw maintenance releases. For a more complete list, check out https://pypi.python.org/pypi?%3Aaction=search&term=pytest&submit=search. For general information see: http://pytest.org/ To install or upgrade pytest: pip install -U pytest # or easy_install -U pytest Particular thanks to Floris, Ronny, Benjamin and the many bug reporters and fix providers. may the fixtures be with you, holger krekel Changes between 2.3.4 and 2.3.5 ----------------------------------- - never consider a fixture function for test function collection - allow re-running of test items / helps to fix pytest-reruntests plugin and also help to keep less fixture/resource references alive - put captured stdout/stderr into junitxml output even for passing tests (thanks Adam Goucher) - Issue 265 - integrate nose setup/teardown with setupstate so it doesnt try to teardown if it did not setup - issue 271 - dont write junitxml on slave nodes - Issue 274 - dont try to show full doctest example when doctest does not know the example location - issue 280 - disable assertion rewriting on buggy CPython 2.6.0 - inject "getfixture()" helper to retrieve fixtures from doctests, thanks Andreas Zeidler - issue 259 - when assertion rewriting, be consistent with the default source encoding of ASCII on Python 2 - issue 251 - report a skip instead of ignoring classes with init - issue250 unicode/str mixes in parametrization names and values now works - issue257, assertion-triggered compilation of source ending in a comment line doesn't blow up in python2.5 (fixed through py>=1.4.13.dev6) - fix --genscript option to generate standalone scripts that also work with python3.3 (importer ordering) - issue171 - in assertion rewriting, show the repr of some global variables - fix option help for "-k" - move long description of distribution into README.rst - improve docstring for metafunc.parametrize() - fix bug where using capsys with pytest.set_trace() in a test function would break when looking at capsys.readouterr() - allow to specify prefixes starting with "_" when customizing python_functions test discovery. (thanks Graham Horler) - improve PYTEST_DEBUG tracing output by puting extra data on a new lines with additional indent - ensure OutcomeExceptions like skip/fail have initialized exception attributes - issue 260 - don't use nose special setup on plain unittest cases - fix issue134 - print the collect errors that prevent running specified test items - fix issue266 - accept unicode in MarkEvaluator expressions

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ANN: eGenix PyRun - One file Python Runtime 1.2.0
by eGenix Team: M.-A. Lemburg April 30, 2013

April 30, 2013

________________________________________________________________________ ANNOUNCING eGenix PyRun - One file Python Runtime Version 1.2.0 An easy-to-use single file relocatable Python run-time - available for Windows, Mac OS X and Unix platforms This announcement is also available on our web-site for online reading: http://www.egenix.com/company/news/eGenix-PyRun-1.2.0.html ________________________________________________________________________ INTRODUCTION Our new eGenix PyRun combines a Python interpreter with an almost complete Python standard library into a single easy-to-use executable, that does not require a system wide installation and is fully relocatable. eGenix PyRun's executable only needs 11MB, but still supports most Python application and scripts - and it can be further compressed to just 3-4MB using upx. Compared to a regular Python installation of typically 100MB on disk, this makes eGenix PyRun ideal for applications and scripts that need to be distributed to many target machines, client installations or customers. It makes "installing" Python on a Unix based system as simple as copying a single file. We have been using the product internally in our mxODBC Connect Server since 2008 with great success and have now extracted it into a stand-alone open-source product. We provide both the source archive to build your own eGenix PyRun, as well as pre-compiled binaries for Linux, FreeBSD and Mac OS X, as 32- and 64-bit versions. Please see the product page for more details: http://www.egenix.com/products/python/PyRun/ ________________________________________________________________________ NEWS This is a new minor release of eGenix PyRun, which contains a few important fixes and enhancement based on the user feedback in recent months. New Features ------------ * Upgraded eGenix PyRun to work with and use Python 2.7.4 per default. * Changed the pyrun default to run in non-optimized mode and added the -O command line option to reenable it. Previous versions of eGenix PyRun used to default to optimized mode, which prevented running tests using e.g. assert with it. The stdlib itself is still frozen in optimized mode. * Added support for directly running Python directories and ZIP files with __main__ module. Only works with the Python 2.7 variant. * eGenix PyRun now honors symlinks, so symlinked copies of PyRun can be used to save disk space. The installations will still work as expected, i.e. independent of each other. * Added new pyrun_release config variable to the pyrun_config module. This allows checking the pyrun release version. * Added PyRun release version to the banner and -V output. * Added support for the Python -d command line option to pyrun. * Added a fix to allow PyRun to compile the sqlite module on Mac OS X 10.4. See http://bugs.python.org/issue17857 for details. * Much enhanced documentation, which now also explains the internals and highlights Python modules/packages that are not included in eGenix PyRun. Other Changes ------------- * Removed the compiler package from being compiled into PyRun. If needed, it can be installed separately. Note that the compiler package needs the parser module which is not compiled into PyRun either, but is still available as extension module. * Removed the Tkinter Python module from being compiled into PyRun. If needed, it can be installed separately. Note that the Tkinter module needs the _tkinter C module, which is not compiled into PyRun either, but is still available as extension module. * Fixed sys.argv when using interactive mode to default to ['']. * All eGenix PyRun distribution packages are now GPG signed with our release key and come with MD5 and SHA1 hashes to check for download corruption. install-pyrun Quick Installation Enhancements --------------------------------------------- Since version 1.1.0, eGenix PyRun includes a shell script called install-pyrun, which greatly simplifies installation of eGenix PyRun. It works much like the virtualenv shell script used for creating new virtual environments (except that there's nothing virtual about PyRun environments). https://downloads.egenix.com/python/install-pyrun With the script, an eGenix PyRun installation is as simple as running: ./install-pyrun targetdir We have enhanced this script somewhat since the last release and also added it to the source code distribution of eGenix PyRun: * Added new options --distribute-distribution and --pip-distribution to be able to use local distribution files for distribute and pip. * Added --debug option to enable debug output. * install-pyrun will now try uname -m in case uname -p doesn't return useful information about the platform. * install-pyrun will now use HTTPS connections for all tools (pyrun, distribute and pip). SSL certificate checking is enabled per default, but can be turned off using the new --disable-certificate-checks option. * Added automatic support for wget to install-pyrun. It is being used if curl is not found on the system. * Added new option --platform-list to print a list of available platform strings. Presentation at EuroPython 2012 ------------------------------- Marc-André Lemburg, CEO of eGenix, gave a presentation about eGenix PyRun at EuroPython 2012 last year. The talk video as well as the slides are available on our website: http://www.egenix.com/library/presentations/EuroPython2012-eGenix-PyRun/ ________________________________________________________________________ LICENSE eGenix PyRun is distributed under the eGenix.com Public License 1.1.0 which is an Open Source license similar to the Python license. You can use eGenix PyRun in both commercial and non-commercial settings without fee or charge. Please see our license page for more details: http://www.egenix.com/products/python/PyRun/license.html The package comes with full source code. ________________________________________________________________________ DOWNLOADS The download archives and instructions for installing eGenix PyRun can be found at: http://www.egenix.com/products/python/PyRun/ As always, we are providing pre-built binaries for all common platforms: Windows 32/64-bit, Linux 32/64-bit, FreeBSD 32/64-bit, Mac OS X 32/64-bit. Source code archives are available for installation on other platforms, such as Solaris, AIX, HP-UX, etc. _______________________________________________________________________ SUPPORT Commercial support for this product is available from eGenix.com. Please see http://www.egenix.com/services/support/ for details about our support offerings. ________________________________________________________________________ MORE INFORMATION For more information about eGenix PyRun, licensing and download instructions, please visit our web-site: http://www.egenix.com/products/python/PyRun/ About Python (http://www.python.org/): Python is an object-oriented Open Source programming language which runs on all modern platforms. By integrating ease-of-use, clarity in coding, enterprise application connectivity and rapid application design, Python establishes an ideal programming platform for today's IT challenges. About eGenix (http://www.egenix.com/): eGenix is a software project, consulting and product company specializing in expert project services and professional quality products for companies, Python users and developers. Enjoy, -- Marc-Andre Lemburg eGenix.com Professional Python Services directly from the Source (#1, Apr 30 2013) >>> Python Projects, Consulting and Support ... http://www.egenix.com/ >>> mxODBC.Zope/Plone.Database.Adapter ... http://zope.egenix.com/ >>> mxODBC, mxDateTime, mxTextTools ... http://python.egenix.com/ ________________________________________________________________________ 2013-04-17: Released eGenix mx Base 3.2.6 ... http://egenix.com/go43 ::::: Try our mxODBC.Connect Python Database Interface for free ! :::::: eGenix.com Software, Skills and Services GmbH Pastor-Loeh-Str.48 D-40764 Langenfeld, Germany. CEO Dipl.-Math. Marc-Andre Lemburg Registered at Amtsgericht Duesseldorf: HRB 46611 http://www.egenix.com/company/contact/

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ANN: PyMQI 1.3 - Python interface to WebSphere MQ
by Dariusz Suchojad April 29, 2013

April 29, 2013

Hi, I'm very happy to announce the release of PyMQI 1.3. *INTRODUCTION* PyMQI allows users to connect Python applications to WebSphere MQ queue managers. It can be used to develop test harnesses for WebSphere MQ based systems, for rapid prototyping of WebSphere MQ applications, for development of administrative GUIs or for mainstream MQ application development. PyMQI has been used in production environments for 10+ years on Linux, Windows, Solaris and AIX with queue managers running on Linux, Windows, Solarix, AIX, HP-UX and z/OS mainframe. Supported WebSphere MQ versions are 5.0 onwards, including 7.5. *What's new* * Support for MQ 7.5 * The development effort has moved to GitHub https://github.com/dsuch/pymqi Special thanks to Alexander Fomichev and Umapathy Subburam for their support and patches! *Hello world with PyMQI* Here's an example showing how easy it is to connect to WebSphere MQ and put a message on a queue. import pymqi qmgr = pymqi.connect('QM01', 'SVRCONN.1', '192.168.1.121(1434)') q = pymqi.Queue(qmgr, 'TEST.QUEUE.1') q.put('Hello from Python') *Links* Project's homepage: https://github.com/dsuch/pymqi Documentation: https://pythonhosted.org/pymqi/ Download URL: https://pypi.python.org/pypi/pymqi Usage examples: https://pythonhosted.org/pymqi/examples.html Twitter: https://twitter.com/fourthrealm Blog: http://www.gefira.pl/blog LinkedIn: http://www.linkedin.com/groups?gid=3726448 IRC: #pymqi channel on Freenode network cheers, -- Dariusz Suchojad

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Guppy-PE/Heapy 0.1.10
by sverker nilsson April 25, 2013

April 25, 2013

I am happy to announce Guppy-PE 0.1.10 Guppy-PE is a library and programming environment for Python, currently providing in particular the Heapy subsystem, which supports object and heap memory sizing, profiling and debugging. It also includes a prototypical specification language, the Guppy Specification Language (GSL), which can be used to formally specify aspects of Python programs and generate tests and documentation from a common source. The main news in this release: o Support for Python 2.7 However, there are still some problems with the tests that I haven't been able to sort out. o Some minor bug fixes License: MIT Guppy-PE 0.1.10 is available in source tarball format on the Python Package Index (a.k.a. Cheeseshop): http://pypi.python.org/pypi/guppy/0.1.10 The project homepage is on Sourceforge: http://guppy-pe.sourceforge.net Enjoy, Sverker Nilsson

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[ANN] PyCon Ireland 2013 Early Bird Tickets on sale
by Vicky Lee - Python Ireland April 25, 2013

April 25, 2013

Hi All, ================================================================== CONFERENCE: Sat 12th - Sun 13th October at Burlington Hotel, Dublin SPRINTS: Mon 14th - Tue 15th October at College of Computer Training (CCT), Dublin ================================================================== PyCon Ireland 2013 Early Bird tickets, Corporate and Student tickets can be purchased via http://python.ie/pycon/2013/ If you are interested in sprints, you have to register separately, scroll down a little bit more to register. :-) Call for Sponsors is still open: http://bit.ly/sponsorpyconie Call for Speakers: http://bit.ly/speakerpyconie Any questions, email pycon(a)python.ie. Cheers, /// Vicky (PyCon Ireland co-Chair) Python Ireland <http://python.ie/> co-Chair / Treasurer EuroPython Board<https://ep2012.europython.eu/blog/2012/07/08/change-board-europython-society> PSF member <http://pyfound.blogspot.ie/2012/08/welcome-new-psf-members.html>

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Registration Open for PyCamp in Columbus, Toronto, and Oshkosh
by Chris Calloway April 23, 2013

April 23, 2013

Registration is open for three upcoming PyCamps produced by the Triangle Python Users Group: - A five-day PyOhio PyCamp hosted by the Ohio State University Open Source Club, July 22-26, 2013 the week prior to the PyOhio regional Python conference weekend. PyCamp is a sponsor and training program of PyOhio: http://trizpug.org/boot-camp/pyohio13/ - A five-day Toronto PyCamp hosted by the University of Toronto Department of Physics, August 12-16, 2013 the week after the PyCon Canada national Python conference weekend. PyCamp is a Diversity Sponsor of PyCon CA: http://trizpug.org/boot-camp/torpy13/ - A three-day Wisconsin Mini-PyCamp hosted at the University of Wisconsin Oshkosh, June 2-4, 2013 as part of the Plone Symposium Midwest training days: http://trizpug.org/boot-camp/wiscpy13/ PyCamp is the original, ultra-low-cost Python Boot Camp created by a user group for user groups. For beginners, PyCamp makes you productive so you can get your work done quickly. PyCamp emphasizes the features which make Python a simpler and more efficient language. Following along with example Python PushUps speeds your learning process. Become a self-sufficient Python developer at PyCamp. PyCamps are conducted in state of the art high technology classrooms on university campuses. Registration will open soon also for two additional Triangle Python User Group boot camp events. An additional announcement will follow when registration opens for these events, but mark your calendars now: - A five-day Seattle PyCamp hosted by the University of Washington Department of Computer Science and Engineering and UW Marketing, September 9-13, 2013. PyCamp is a sponsor of the Seattle Plone Users Group. - A five-day special Python Web Programming boot camp in Chapel Hill hosted by the University of North Carolina Department of Marine Sciences, August 5-9, 2013. -- Sincerely, Chris Calloway http://nccoos.org/Members/cbc office: 3313 Venable Hall phone: (919) 599-3530 mail: Campus Box #3300, UNC-CH, Chapel Hill, NC 27599

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ANN: pyftpdlib 1.2.0 released
by Giampaolo Rodola' April 22, 2013

April 22, 2013

Hi there guys, I'm pleased to announce pyftpdlib 1.2.0. === About === Python FTP server library provides an high-level portable interface to easily write asynchronous FTP/S servers with Python. pyftpdlib is currently the most complete RFC-959 FTP server implementation available for Python programming language. This new release fixes a critical bug with threaded FTP server and also introduces 3 new features: - the address passed to FTPServer can be a socket object - FTPServer's new backlog argument (passed to socket.sliten()) - IO loop's fileno() method https://code.google.com/p/pyftpdlib/issues/list?can=1&q=milestone=1.2.0&col… === Links === Home: http://code.google.com/p/pyftpdlib/ Download: https://pyftpdlib.googlecode.com/files/pyftpdlib-1.2.0.tar.gz Tutorial: http://code.google.com/p/pyftpdlib/wiki/Tutorial Enjoy, Giampaolo

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