Mailman 3 October 2008 - Python-announce-list

Jython 2.5 Beta0 Released!
by Frank Wierzbicki 31 Oct '08

31 Oct '08

Happy Halloween! On behalf of the Jython development team, I'm pleased to announce that Jython 2.5b0 is available for download at http://downloads.sourceforge.net/jython/jython_installer-2.5b0.jar. See the installation instructions at http://jython.org/Project/installation.html. Jython 2.5 Beta0 is the beginning of a code cooling period where the number of new features should significantly slow as we concentrate on solidifying Jython 2.5 for an eventual release. There are still a number of features that we will squeeze in (like jythonc). This is a beta release so be careful. -Frank

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ANN: PyTables 2.1rc1 ready for testing
by Francesc Alted 31 Oct '08

31 Oct '08

============================ Announcing PyTables 2.1rc1 ============================ PyTables is a library for managing hierarchical datasets and designed to efficiently cope with extremely large amounts of data with support for full 64-bit file addressing. PyTables runs on top of the HDF5 library and NumPy package for achieving maximum throughput and convenient use. In PyTables 2.1rc1 many new features and a handful of bugs have been addressed. This is a release candidate, so, in addition to the tarball, binaries for Windows are provided too. Also, the API has been frozen and you should only expect bug fixes and documentation improvements for 2.1 final (due to release in a couple of weeks now). This version introduces important improvements, like much faster node opening, creation or navigation, a file-based way to fine-tune the different PyTables parameters (fully documented now in a new appendix of the UG) and support for multidimensional atoms in EArray/CArray objects. Regarding the Pro edition, 3 different kind of indexes have been added so that the user can choose the best for her needs. Also, and due to the introduction of the concept of chunkmaps in OPSI, the responsiveness of complex queries with low selectivity has improved quite a lot. And last but not least, it is possible now to sort completely tables that are ordered by a specific field, with no practical limit in size (up to 2**48 rows, that is, around 281 trillion of rows). More info in: http://www.pytables.org/moin/PyTablesPro#WhatisnewinforthcomingPyTablesPro2… In case you want to know more in detail what has changed in this version, have a look at ``RELEASE_NOTES.txt`` in the tarball. Find the HTML version for this document at: http://www.pytables.org/moin/ReleaseNotes/Release_2.1rc1 You can download a source package of the version 2.1rc1 with generated PDF and HTML docs and binaries for Windows from http://www.pytables.org/download/preliminary Finally, and for the first time, an evaluation version for PyTables Pro has been made available in: http://www.pytables.org/download/evaluation Please read the evaluation license for terms of use of this version: http://www.pytables.org/moin/PyTablesProEvaluationLicense For an on-line version of the manual, visit: http://www.pytables.org/docs/manual-2.1rc1 Resources ========= Go to the PyTables web site for more details: http://www.pytables.org About the HDF5 library: http://hdfgroup.org/HDF5/ About NumPy: http://numpy.scipy.org/ Acknowledgments =============== Thanks to many users who provided feature improvements, patches, bug reports, support and suggestions. See the ``THANKS`` file in the distribution package for a (incomplete) list of contributors. Many thanks also to SourceForge who have helped to make and distribute this package! And last, but not least thanks a lot to the HDF5 and NumPy (and numarray!) makers. Without them PyTables simply would not exist. Share your experience ===================== Let us know of any bugs, suggestions, gripes, kudos, etc. you may have. ---- **Enjoy data!** -- The PyTables Team -- Francesc Alted

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PyCon 2009 (US) - Call for tutorials Extended to 11/3
by Greg Lindstrom 30 Oct '08

30 Oct '08

We have had requests to extend the deadline for submitting Tutorial Proposals for PyCon 2009 (US) through the weekend and are willing to do so. We will accept tutorial proposals through Monday, November 3. --greg ================================== The period for submitting tutorial proposals for Pycon 2009 (US) is open and will continue through Monday, November 3rd. This year features two "pre-conference" days devoted to tutorials on Wednesday March 25 & Thursday March 26 in Chicago. This allows for more classes than ever. Tutorials are 3-hours long on a specific topic of your choice. Last year we featured classes on Learning Python, Web Development, Scientific Computing, and many more. Class size varied from 10 to over 60 students. The extended time spent in class allows teachers to cover a lot of material while allowing for interaction with students. The full Call for Tutorial Proposals, including submission details, an example proposal as well as a template, is available at < http://us.pycon.org/2009/tutorials/proposals/>. Tutorial selections will be announced in early December to give you time to prepare your class and PyCon will compensate instructors US$1,500 per tutorial. If you have any questions, please contact pycon-tutorials(a)python.org. Greg Lindstrom Tutorial Coordinator, PyCon 2009 (US)

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ANN: The first official Python coin has just been released in the Netherlands.
by Stani 29 Oct '08

29 Oct '08

I am pleased to announce that I won the competition for the next 5 euro commemorative coin with the theme 'Netherlands and Architecture'. The design of the coin was totally developed with python. I used PIL for raster image manipulation and pyCairo for generating vector graphics. For more info see: http://pythonide.blogspot.com/2008/10/how-to-make-money-with-free-software.…

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cx_Oracle 4.4.1
by Anthony Tuininga 29 Oct '08

29 Oct '08

What is cx_Oracle? cx_Oracle is a Python extension module that allows access to Oracle and conforms to the Python database API 2.0 specifications with a few exceptions. Where do I get it? http://cx-oracle.sourceforge.net What's new? 1) Make the bind variables and fetch variables accessible although they need to be treated carefully since they are used internally; support added for forward compatibility with version 5.x. 2) Include the "cannot insert null value" in the list of errors that are treated as integrity errors as requested by Matt Boersma. 3) Use a cx_Oracle.Error instance rather than a string to hold the error when truncation (ORA-1406) takes place as requested by Helge Tesdal. 4) Added support for fixed char, old style varchar and timestamp attribute values in objects. 5) Tweaked setup.py to check for the Oracle version up front rather than during the build in order to produce more meaningful errors and simplify the code. 6) In setup.py added proper detection for the instant client on Mac OS X as recommended by Martijn Pieters. 7) In setup.py, avoided resetting the extraLinkArgs on Mac OS X as doing so prevents simple modification where desired as expressed by Christian Zagrodnick. 8) Added documentation on exception handling as requested by Andreas Mock, who also graciously provided an initial patch. 9) Modified documentation indicating that the password attribute on connection objects can be written. 10) Added documentation warning that parameters not passed in during subsequent executions of a statement will retain their original values as requested by Harald Armin Massa. 11) Added comments indicating that an Oracle client is required since so many people find this surprising. 12) Removed all references to Oracle 8i from the documentation and version 5.x will eliminate all vestiges of support for this version of the Oracle client. 13) Added additional link arguments for Cygwin as requested by Rob Gillen. Anthony Tuininga

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ANN: NumPy 1.2.1
by Jarrod Millman 29 Oct '08

29 Oct '08

I'm pleased to announce the release of NumPy 1.2.1. NumPy is the fundamental package needed for scientific computing with Python. It contains: * a powerful N-dimensional array object * sophisticated (broadcasting) functions * basic linear algebra functions * basic Fourier transforms * sophisticated random number capabilities * tools for integrating Fortran code. Besides it's obvious scientific uses, NumPy can also be used as an efficient multi-dimensional container of generic data. Arbitrary data-types can be defined. This allows NumPy to seamlessly and speedily integrate with a wide-variety of databases. This bugfix release comes almost one month after the 1.2.0 release. Please note that NumPy 1.2.1 requires Python 2.4 or greater. For information, please see the release notes: https://sourceforge.net/project/shownotes.php?release_id=636728&group_id=13… You can download the release from here: https://sourceforge.net/project/showfiles.php?group_id=1369 Thank you to everybody who contributed to this release. Enjoy, -- Jarrod Millman Computational Infrastructure for Research Labs 10 Giannini Hall, UC Berkeley phone: 510.643.4014 http://cirl.berkeley.edu/

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PyCon 2009 - Call for tutorials nearing the end
by Greg Lindstrom 29 Oct '08

29 Oct '08

The period for submitting tutorial proposals for Pycon 2009 (US) is open and will continue through Friday, October 31th. This year features two "pre-conference" days devoted to tutorials on Wednesday March 25 & Thursday March 26 in Chicago. This allows for more classes than ever. Tutorials are 3-hours long on a specific topic of your choice. Last year we featured classes on Learning Python, Web Development, Scientific Computing, and many more (there was particular interest in "Intermediate" level classes). Class size varied from 10 to over 60 students. The extended time spent in class allows teachers to cover a lot of material while allowing forinteraction with students. The full Call for Tutorial Proposals, including submission details, an example proposal as well as a template, is available at < http://us.pycon.org/2009/tutorials/proposals/>. Tutorial selections will be announced in early December to give you time to prepare your class and PyCon will compensate instructors US$1,500 per tutorial. If you have any questions, please contact pycon-tutorials(a)python.org. Greg Lindstrom Tutorial Coordinator, PyCon 2009 (US)

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Google Checkout Level 1 and Level 2 ported to the Google App Engine
by Massimo Di Pierro 28 Oct '08

28 Oct '08

Live demo with examples: http://web2py.appspot.com/plugin_checkout Source code: http://mdp.cti.depaul.edu/appliances/default/show/43

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python-graph-1.3.1 released
by Pedro Matiello 27 Oct '08

27 Oct '08

python-graph release 1.3.1 http://code.google.com/p/python-graph/ ------------------------------------------------------------------------ python-graph is a library for working with graphs in Python. This software provides a suitable data structure for representing graphs and a whole set of important algorithms. The code is appropriately documented and API reference is generated automatically by epydoc. Provided features and algorithms: * Support for directed, undirected, weighted and non-weighted graphs * Support for hypergraphs * Canonical operations * XML import and export * DOT-Language output (for usage with Graphviz) * Random graph generation * Accessibility (transitive closure) * Breadth-first search * Cut-vertex and cut-edge identification * Depth-first search * Identification of connected components * Minimum spanning tree (Prim's algorithm) * Mutual-accessibility (strongly connected components) * Shortest path (Dijkstra's algorithm) Changes in this release: * Two bugs fixed; * Deprecated methods removed. Download: http://code.google.com/p/python-graph/downloads/list (tar.bz2, zip and rpm packages are available.)

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Pydev 1.3.24 Released
by Fabio Zadrozny 27 Oct '08

27 Oct '08

Hi All, Pydev and Pydev Extensions 1.3.24 have been released This is a high-priority release to fix some blocker bugs (that's why it was released in such a short time from the last release) 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: ----------------------------------------------------------------- Code-analysis: Import was not recognized on code-analysis on some specific cases Release Highlights in Pydev: ---------------------------------------------- * Code-completion: when a relative import was used from __init__ and the imported module used a token from the __init__ in a 'full' way, pydev did not recognize it * Debugger: Fixed debugger halting problem * Debugger and Jython: Debugger working with Jython (itertools and pid not available) 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 Aptana http://aptana.com/python 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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