Mailman 3 June 2009 - Python-announce-list

ANN: openopt 0.24 - free numerical optimization framework
by dmitrey 15 Jun '09

15 Jun '09

Hi all, OpenOpt 0.24, a free Python-written numerical optimization framework with some own solvers and connections to tens of 3rd party ones, has been released. BSD license allows to use it in both free opensource and commercial closed-code software. Currently we have ~80 unique visitors daily, 15% of the ones visit installation webpage, and some more install it via PYPI, Debian and Alt Linux repository, mac.softpedia.com, darwinports.com, pythonxy.com, mloss.org. Our homepage: http://openopt.org Introduction to the framework: http://openopt.org/Foreword All release details are here: http://openopt.org/Changelog or http://forum.openopt.org/viewtopic.php?id=110 Regards, OpenOpt developers.

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[ANN] Reminder: EuroSciPy 2009 - Early Bird Deadline June 15, 2009
by Mike Müller 14 Jun '09

14 Jun '09

EuroSciPy 2009 - Early Bird Deadline June 15, 2009 ================================================== The early bird deadline for EuroSciPy 2009 is June 15, 2009. Please register ( http://www.euroscipy.org/registration.html ) by this date to take advantage of the reduced early registration rate. EuroSciPy 2009 ============== We're pleased to announce the EuroSciPy 2009 Conference to be held in Leipzig, Germany on July 25-26, 2009. http://www.euroscipy.org This is the second conference after the successful conference last year. Again, EuroSciPy will be a venue for the European community of users of the Python programming language in science. Presentation Schedule --------------------- The schedule of presentations for the EuroSciPy conference is online: http://www.euroscipy.org/presentations/schedule.html We have 16 talks from a variety of scientific fields. All about using Python for scientific work. Registration ------------ Registration is open. The registration fee is 100.00 € for early registrants and will increase to 150.00 € for late registration after June 15, 2009. On-site registration and registration after July 23, 2009 will be 200.00 €. Registration will include breakfast, snacks and lunch for Saturday and Sunday. Please register here: http://www.euroscipy.org/registration.html Important Dates --------------- March 21 Registration opens May 8 Abstract submission deadline May 15 Acceptance of presentations May 30 Announcement of conference program June 15 Early bird registration deadline July 15 Slides submission deadline July 20 - 24 Pre-Conference courses July 25/26 Conference August 15 Paper submission deadline Venue ----- mediencampus Poetenweg 28 04155 Leipzig Germany See http://www.euroscipy.org/venue.html for details. Help Welcome ------------ You like to help make the EuroSciPy 2009 a success? Here are some ways you can get involved: * attend the conference * submit an abstract for a presentation * give a lightning talk * make EuroSciPy known: - distribute the press release (http://www.euroscipy.org/media.html) to scientific magazines or other relevant media - write about it on your website - in your blog - talk to friends about it - post to local e-mail lists - post to related forums - spread flyers and posters in your institution - make entries in relevant event calendars - anything you can think of * inform potential sponsors about the event * become a sponsor If you're interested in volunteering to help organize things or have some other idea that can help the conference, please email us at mmueller at python-academy dot de. Sponsorship ----------- Do you like to sponsor the conference? There are several options available: http://www.euroscipy.org/sponsors/become_a_sponsor.html Pre-Conference Courses ---------------------- Would you like to learn Python or about some of the most used scientific libraries in Python? Then the "Python Summer Course" [1] might be for you. There are two parts to this course: * a two-day course "Introduction to Python" [2] for people with programming experience in other languages and * a three-day course "Python for Scientists and Engineers" [3] that introduces some of the most used Python tools for scientists and engineers such as NumPy, PyTables, and matplotlib Both courses can be booked individually [4]. Of course, you can attend the courses without registering for EuroSciPy. [1] http://www.python-academy.com/courses/python_summer_course.html [2] http://www.python-academy.com/courses/python_course_programmers.html [3] http://www.python-academy.com/courses/python_course_scientists.html [4] http://www.python-academy.com/courses/dates.html

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[RELEASED] Python 3.1 Release Candidate 2
by Benjamin Peterson 13 Jun '09

13 Jun '09

On behalf of the Python development team, I'm happy to announce the second release candidate of Python 3.1. Python 3.1 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/dev/py3k/whatsnew/3.1.html or Misc/NEWS in the Python distribution. This is a release candidate, and as such, we do not recommend use in production environments. However, please take this opportunity to test the release with your libraries or applications. This will hopefully discover bugs before the final release and allow you to determine how changes in 3.1 might impact you. If you find things broken or incorrect, please submit a bug report at http://bugs.python.org For more information and downloadable distributions, see the Python 3.1 website: http://www.python.org/download/releases/3.1/ See PEP 375 for release schedule details: http://www.python.org/dev/peps/pep-0375/ Enjoy, -- Benjamin Benjamin Peterson benjamin at python.org Release Manager (on behalf of the entire python-dev team and 3.1's contributors)

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OSCON: booth volunteers wanted
by Aahz 12 Jun '09

12 Jun '09

I'm organizing a Python booth for the OSCON Exhibit Hall Weds 7/22 and Thurs 7/23. If you'd like to help staff the booth, please join the OSCON mailing list: http://mail.python.org/mailman/listinfo/oscon For more information about OSCON: http://conferences.oreilly.com/oscon -- Aahz (aahz(a)pythoncraft.com) <*> http://www.pythoncraft.com/ "If you don't know what your program is supposed to do, you'd better not start writing it." --Dijkstra

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Python svn builds
by A. Cavallo 12 Jun '09

12 Jun '09

Python svn builds (http://pyvm.sourceforge.net) is a project to provide python binary builds ready to use. The main features for these builds are: + install under /opt/opt-python-svnXXXXX-2.7a0 (XXXXX is the svn revision) + multiple interpreters can be installed side by side + installed in parallel to the system python (administrator friendly) + they're build for several different platforms (rpm based) + the build host is provided by the OpenSUSE buildserver + the builds can be deployed using yum/yast/urpmi (OpenSUSE buildserver) + each build runs a small smoke test and it is unattented + the test results are reported The aim is: + implementing a continuous integration practice + to provide python developer with reliable and repeatable builds + modules developer can test their modules against the latest python News for this version: Few modules (imaging, numpy, pexpect and setuptools) have been added and they're build for each intepreter. These are still in testing but the aim here is to have a full complete build chain with a test suite (next step is providing a test driven development). Download and documentation from: http://pyvm.sourceforge.net Regards, Antonio References: OpenSUSE buildserver: https://build.opensuse.org

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EXTENDED: OSCON 2009 early bird (June 23)
by Aahz 11 Jun '09

11 Jun '09

Registration is now open for the O'Reilly Open Source Convention (OSCON). OSCON 2009 will be July 20-24 in San Jose, California. Early registration has been extended and now ends June 23. Use the special discount code 'os09pgm' for an extra 15% off. For more information: http://conferences.oreilly.com/oscon -- Aahz (aahz(a)pythoncraft.com) <*> http://www.pythoncraft.com/ "If you don't know what your program is supposed to do, you'd better not start writing it." --Dijkstra

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web2py 1.64.0
by Massimo Di Pierro 11 Jun '09

11 Jun '09

web2py 1.64.0 is out http://www.web2py.com new features: - full Jython support, including xzJDBC for sqlite and postgresql. install jython and run: jython web2py.py -h - models are 2.5x faster - better LDAP support - custom forms Example: #in model db.define_table('person',SQLField('name') # in controller def index(): return dict(form=crud.create(db.person)) # instead of usual view {{=form}} # now you can use a custom view: {{=form.custom.begin}} {{=form.cusom.label.name}}: {{=form.custom.widget.name}} {{=form.custom.submit}} {{=form.custom.end}}

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ANN: eGenix pyOpenSSL Distribution 0.9.0-0.9.8k
by eGenix Team: M.-A. Lemburg 11 Jun '09

11 Jun '09

________________________________________________________________________ ANNOUNCING eGenix.com pyOpenSSL Distribution Version 0.9.0-0.9.8k An easy to install and use repackaged distribution of the pyOpenSSL Python interface for OpenSSL - available on 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-pyOpenSSL-Distribution-0.9.0-0.9.… ________________________________________________________________________ INTRODUCTION The eGenix.com pyOpenSSL Distribution includes everything you need to get started with SSL in Python. It comes with an easy to use installer that includes the most recent OpenSSL library versions in pre-compiled form. pyOpenSSL is an open-source Python add-on (http://pyopenssl.sf.net/) that allows writing SSL aware networking applications as well as certificate management tools. OpenSSL is an open-source implementation of the SSL protocol (http://www.openssl.org/). For more information, please see the product page: http://www.egenix.com/products/python/pyOpenSSL/ ________________________________________________________________________ NEWS This new release of the eGenix.com pyOpenSSL Distribution updates the included pyOpenSSL version to 0.9, which includes a new fix for a serious problem in pyOpenSSL 0.8 related to threaded applications. It also comes with an important bug-fix update of OpenSSL, now at version 0.9.8k. The problem causes invalid thread states in the Python interpreter which then result in random core dumps and seg faults when using pyOpenSSL 0.8.0 with multi-threaded applications. The new fix is slightly different than the one we included in 0.8.1 and based on a code analysis we did together with Jean-Paul Calderone to track down the cause of the problem. Binaries are available for Linux x86 and x64 as well as Windows x86 and Mac OS X PPC/Intel. They include both pyOpenSSL and the necessary OpenSSL libraries. For Plone users and friends of buildout scripts, we have added pre-built binaries for Windows. They install just like the Linux versions and allow easy integration of the archives into buildout scripts. For our Mac OS X users, we have included new pre-built binaries for Mac OS X PPC and Intel platforms. ________________________________________________________________________ DOWNLOADS The download archives and instructions for installing the package can be found at: http://www.egenix.com/products/python/pyOpenSSL/ ________________________________________________________________________ UPGRADING Before installing this version of pyOpenSSL, please make sure that you uninstall any previously installed pyOpenSSL version. Otherwise, you could end up not using the included OpenSSL libs. _______________________________________________________________________ SUPPORT Commercial support for these packages is available from eGenix.com. Please see http://www.egenix.com/services/support/ for details about our support offerings. Enjoy, -- Marc-Andre Lemburg eGenix.com Professional Python Services directly from the Source (#1, Jun 11 2009) >>> Python/Zope Consulting and Support ... http://www.egenix.com/ >>> mxODBC.Zope.Database.Adapter ... http://zope.egenix.com/ >>> mxODBC, mxDateTime, mxTextTools ... http://python.egenix.com/ ________________________________________________________________________ 2009-06-29: EuroPython 2009, Birmingham, UK 17 days to go ::: Try our new 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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First Meeting of the Grand Rapids (MI) Python Users Group
by Ben Rousch 10 Jun '09

10 Jun '09

Announcing the inaugural meeting of the newly formed Grand Rapids Python Users Group (http://www.grpug.org ) in Grand Rapids, MI, USA. What: *First Meeting of the GRPUG* When: *Monday, 6/15/09, 6PM - ??* Where: *Grand Rapids Brewing Company* ( http://www.michiganmenu.com/grbrewing.html ) A few of us checked out the Grand Rapids Brewing Company as a potential meeting site for the GRPUG, and it looked pretty good. It's a nice microbrewery and restaurant. My only worry is the ambient noise level, but my contact there assures me that lowering the canvas shades and doors shuts out a lot of the sound. Anyways, let's have our first meeting there and see how it goes. They have appetizers, meals, pop, and - most importantly - beer! So feel free to have dinner and drink while you're there. The room is in the back of the main dining hall. I would like to do a Python IDE/editor roundup, so it would be great if you could bring a laptop/netbook and show off your favorite IDE or editor. You don't need to prepare anything elaborate; just fire it up and show off a few features. In fact, no slides allowed the first night! I think we'll have a projector available, otherwise we'll huddle around laptops for the demos. Afterwords we'll socialize and talk about what we envision for GRPUG and how much we hate all of those inferior programming languages.

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Python-URL! - weekly Python news and links (Jun 10)
by Gabriel Genellina 10 Jun '09

10 Jun '09

QOTW: "Most power systems math can be summed this way: take a really big number and multiply by the square root of two." - iceowl http://everything2.com/index.pl?node_id=1348321 The chuzer project provides a means for severely disabled people to express their most basic needs. The project desperately needs help, or it will die. http://comments.gmane.org/gmane.comp.python.general/625159 Never heard of this - guys competing to see whose is shorter! http://comments.gmane.org/gmane.comp.python.general/625868 Correctly implementing __copy__ and __deepcopy__ with multiple inheritance: http://comments.gmane.org/gmane.comp.python.general/625072 http://comments.gmane.org/gmane.comp.python.general/625291 An overly complicated proposed function leads to discuss good API design principles: http://comments.gmane.org/gmane.comp.python.general/625433 List, tuple, set: when to use each type: http://comments.gmane.org/gmane.comp.python.general/625942 Comparing programming languages: how to do the same thing on several languages: http://comments.gmane.org/gmane.comp.python.general/625637 Generating a dynamic plot of x-y data: http://comments.gmane.org/gmane.comp.python.general/625346 __hash__, __eq__, dictionaries, and the big-Oh notation: http://comments.gmane.org/gmane.comp.python.general/625034 The unladen-swallow project, the LLVM virtual machine, and how they relate to the future of CPython: http://comments.gmane.org/gmane.comp.python.general/625493 Accessing data located in the filesystem, inside a package directory: http://comments.gmane.org/gmane.comp.python.general/625209 Closures in Python don't work exactly the same as in other languages: http://comments.gmane.org/gmane.comp.python.general/625475 How to iterate over several lists, one after another? http://comments.gmane.org/gmane.comp.python.general/625532 ======================================================================== Everything Python-related you want is probably one or two clicks away in these pages: Python.org's Python Language Website is the traditional center of Pythonia http://www.python.org Notice especially the master FAQ http://www.python.org/doc/FAQ.html PythonWare complements the digest you're reading with the marvelous daily python url http://www.pythonware.com/daily Just beginning with Python? This page is a great place to start: http://wiki.python.org/moin/BeginnersGuide/Programmers The Python Papers aims to publish "the efforts of Python enthusiasts": http://pythonpapers.org/ The Python Magazine is a technical monthly devoted to Python: http://pythonmagazine.com Readers have recommended the "Planet" sites: http://planetpython.org http://planet.python.org comp.lang.python.announce announces new Python software. Be sure to scan this newsgroup weekly. http://groups.google.com/group/comp.lang.python.announce/topics Python411 indexes "podcasts ... to help people learn Python ..." Updates appear more-than-weekly: http://www.awaretek.com/python/index.html The Python Package Index catalogues packages. http://www.python.org/pypi/ Much of Python's real work takes place on Special-Interest Group mailing lists http://www.python.org/sigs/ Python Success Stories--from air-traffic control to on-line match-making--can inspire you or decision-makers to whom you're subject with a vision of what the language makes practical. http://www.pythonology.com/success The Python Software Foundation (PSF) has replaced the Python Consortium as an independent nexus of activity. It has official responsibility for Python's development and maintenance. http://www.python.org/psf/ Among the ways you can support PSF is with a donation. http://www.python.org/psf/donations/ The Summary of Python Tracker Issues is an automatically generated report summarizing new bugs, closed ones, and patch submissions. http://search.gmane.org/?author=status%40bugs.python.org&group=gmane.comp.p… Although unmaintained since 2002, the Cetus collection of Python hyperlinks retains a few gems. http://www.cetus-links.org/oo_python.html Python FAQTS http://python.faqts.com/ The Cookbook is a collaborative effort to capture useful and interesting recipes. http://code.activestate.com/recipes/langs/python/ Many Python conferences around the world are in preparation. Watch this space for links to them. Among several Python-oriented RSS/RDF feeds available, see: http://www.python.org/channews.rdf For more, see: http://www.syndic8.com/feedlist.php?ShowMatch=python&ShowStatus=all The old Python "To-Do List" now lives principally in a SourceForge reincarnation. http://sourceforge.net/tracker/?atid=355470&group_id=5470&func=browse http://www.python.org/dev/peps/pep-0042/ del.icio.us presents an intriguing approach to reference commentary. It already aggregates quite a bit of Python intelligence. http://del.icio.us/tag/python Enjoy the *Python Magazine*. http://pymag.phparch.com/ *Py: the Journal of the Python Language* http://www.pyzine.com Dr.Dobb's Portal is another source of Python news and articles: http://www.ddj.com/TechSearch/searchResults.jhtml?queryText=python and Python articles regularly appear at IBM DeveloperWorks: http://www.ibm.com/developerworks/search/searchResults.jsp?searchSite=dW&se… Previous - (U)se the (R)esource, (L)uke! - messages are listed here: http://search.gmane.org/?query=python+URL+weekly+news+links&group=gmane.com… http://groups.google.com/groups/search?q=Python-URL!+group%3Acomp.lang.pyth… http://lwn.net/Search/DoSearch?words=python-url&ctype3=yes&cat_25=yes There is *not* an RSS for "Python-URL!"--at least not yet. Arguments for and against are occasionally entertained. Suggestions/corrections for next week's posting are always welcome. E-mail to <Python-URL(a)phaseit.net> should get through. To receive a new issue of this posting in e-mail each Monday morning (approximately), ask <claird(a)phaseit.net> to subscribe. Mention "Python-URL!". Write to the same address to unsubscribe. -- The Python-URL! Team-- Phaseit, Inc. (http://phaseit.net) is pleased to participate in and sponsor the "Python-URL!" project. Watch this space for upcoming news about posting archives.

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