Mailman 3 June 2011 - Python-announce-list

ANN: HDF5 for Python (h5py) 2.0
by Andrew Collette June 20, 2011

June 20, 2011

Announcing HDF5 for Python (h5py) 2.0 ===================================== We are proud to announce the availability of HDF5 for Python (h5py) 2.0 final. HDF5 for Python (h5py) is a general-purpose Python interface to the Hierarchical Data Format library, version 5. HDF5 is a mature scientific software library originally developed at NCSA, designed for the fast, flexible storage of enormous amounts of data. >From a Python programmer's perspective, HDF5 provides a robust way to store data, organized by name in a tree-like fashion. You can create datasets (arrays on disk) hundreds of gigabytes in size, and perform random-access I/O on desired sections. Datasets are organized in a filesystem-like hierarchy using containers called "groups", and accessed using the traditional POSIX /path/to/resource syntax. Following beta feedback over the past few weeks, and taking into account the substantial number of changes in this release, we have decided to label this release as h5py 2.0. While most existing code will run unmodified, we strongly encourage all users to consult the list of changes in the document "What's new in h5py 2.0": http://h5py.alfven.org/docs/intro/whatsnew.html Downloads, FAQ and bug tracker are available at Google Code: * Google code site: http://h5py.googlecode.com Most exciting changes --------------------- * Significant improvements in stability, from a refactoring of the low-level component which talks to HDF5. * HDF5 1.8.3 through 1.8.7 now work correctly and are officially supported. * Python 3.2 is officially supported by h5py! Thanks especially to Darren Dale for getting this working. * HDF5 1.6.X is no longer supported on any platform; following the release of 1.6.10 some time ago, this branch is no longer maintained by The HDF Group. * Python 2.6 or later is now required to run h5py. This is a consequence of the numerous changes made to h5py for Python 3 compatibility.

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histogram 0.2.1
by Jiao Lin June 20, 2011

June 20, 2011

This release (0.2.1) is a bug-fix release of the histogram package release 0.2. To update your installation, do $ easy_install -U histogram The histogram package (http://docs.danse.us/histogram) provides a simple yet fundamental data structure for scientific data reduction/analysis. Features: • Carries both data and error bars and has a default implementation for error propagation • Flexible slicing to get sub-histograms • Easy access to data as numpy arrays • Dump/load histograms in hdf format • Quick plot using matplotlib Links: • Homepage: http://docs.danse.us/histogram • Installation: http://docs.danse.us/histogram/0.2.1/install.html • Python API tutorial: http://docs.danse.us/histogram/0.2.1/python-interface.html Bug reports and any comments are very much appreciated! Thanks. -- Jiao Lin linjiao(a)caltech.edu

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SQLObject 1.1.0
by Oleg Broytman June 20, 2011

June 20, 2011

Hello! I'm pleased to announce version 1.1.0, the first stable release of branch 1.1 of SQLObject. What is SQLObject ================= SQLObject is an object-relational mapper. Your database tables are described as classes, and rows are instances of those classes. SQLObject is meant to be easy to use and quick to get started with. SQLObject supports a number of backends: MySQL, PostgreSQL, SQLite, Firebird, Sybase, MSSQL and MaxDB (also known as SAPDB). Where is SQLObject ================== Site: http://sqlobject.org Development: http://sqlobject.org/devel/ Mailing list: https://lists.sourceforge.net/mailman/listinfo/sqlobject-discuss Archives: http://news.gmane.org/gmane.comp.python.sqlobject Download: http://cheeseshop.python.org/pypi/SQLObject/1.1.0 News and changes: http://sqlobject.org/News.html What's New ========== Features & Interface -------------------- * SelectResults (returned from .select()) is allowed in IN(column, list). * A different workaround is used in SQLiteConnection to prevent PySQLite from converting strings to unicode - in the case of a registered text conversion function PySQLite silently converts empty strings to Nones; now SQLObject uses text_factory instead and properly returns empty strings. * It is now possible to declare one encoding for all UnicodeCol's per table (as sqlmeta.dbEncoding) or per connection (as connection.dbEncoding). Default (if dbEncoding is found neither in column nor in table nor in connection) is 'utf-8'. Source code and internals ------------------------- * Decorators @classmethod and @staticmethod are used everywhere. * All 'mydict.has_key(name)' checks were replaced with 'name in mydict'. For a more complete list, please see the news: http://sqlobject.org/News.html Oleg. -- Oleg Broytman http://phdru.name/ phd(a)phdru.name Programmers don't die, they just GOSUB without RETURN.

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Pyro 4.7 released.
by Irmen de Jong June 19, 2011

June 19, 2011

Hello, Pyro 4.7 has just been released! Get it from Pypi: http://pypi.python.org/pypi/Pyro4/ Updates: * AutoProxy feature! Pyro objects are replaced by proxies automatically. * Asynchronous method calls: do a call and get the results somewhere in the future. * One-line-server-setup using Pyro4.Daemon.serveSimple * nameserver.register() behavior change: overwrites existing names. * added Pyro4.util.excepthook that you can use for sys.excepthook * part of the new manual has been written, including a tutorial. Pyro = Python Remote Objects. It is a library that enables you to build applications in which objects can talk to each other over the network, with minimal programming effort. You can just use normal Python method calls, with almost every possible parameter and return value type, and Pyro takes care of locating the right object on the right computer to execute the method. It is designed to be very easy to use, and to generally stay out of your way. But it also provides a set of powerful features that enables you to build distributed applications rapidly and effortlessly. Pyro is written in 100% pure Python and therefore runs on many platforms and Python versions, including Python 2.x, Python 3.x, IronPython, Jython and Pypy. Enjoy, Irmen de Jong

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csound vst code generators
by edexter June 19, 2011

June 19, 2011

A collection of csound code generators to take all of the parameters of a vst instrument and generate code. Command line programs to take all the vst parameters and send them out to a text file. http://dexrowem.blogspot.com/2011/06/csound-vst-generater-pack.html

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ANN: PyGUI 2.5.1
by Gregory Ewing June 18, 2011

June 18, 2011

PyGUI 2.5.1 is available: http://www.cosc.canterbury.ac.nz/greg.ewing/python_gui/ Minor update to fix missing distutils_extensions.py file. What is PyGUI? -------------- PyGUI is a cross-platform GUI toolkit designed to be lightweight and have a highly Pythonic API. -- Gregory Ewing greg.ewing(a)canterbury.ac.nz http://www.cosc.canterbury.ac.nz/greg.ewing/

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ANN: PyGUI 2.5
by Greg Ewing June 16, 2011

June 16, 2011

PyGUI 2.5 is available: http://www.cosc.canterbury.ac.nz/greg.ewing/python_gui/ Lots of new stuff in this version. Highlights include: - Improved facilities for customising the standard menus. - Functions for creating PyGUI Images from PIL images and numpy arrays. - ListButton - a pop-up or pull-down menu of choices. - GridView - a user-defined view consisting of a regular grid of cells. - PaletteView - a GridView specialised for implementing tool palettes. There is also a big pile of other improvements and bug fixes. See the CHANGES file for full details. What is PyGUI? -------------- PyGUI is a cross-platform GUI toolkit designed to be lightweight and have a highly Pythonic API. -- Gregory Ewing greg.ewing(a)canterbury.ac.nz http://www.cosc.canterbury.ac.nz/greg.ewing/

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[ANN] OpenOpt Suite release 0.34
by dmitrey June 16, 2011

June 16, 2011

Hi all, I'm glad to inform you about new quarterly release 0.34 of the free (even for commercial purposes, license: BSD) cross-platform OOSuite package software (OpenOpt, FuncDesigner, SpaceFuncs, DerApproximator), Main changes: * Python 3 compatibility * Lots of improvements and speedup for interval calculations * Now interalg can obtain all solutions of nonlinear equation (example) or systems of them (example) in the involved box lb_i <= x_i <= ub_i (bounds can be very large), possibly constrained (e.g. sin(x) + cos(y+x) > 0.5). * Many other improvements and speedup for interalg. See http://forum.openopt.org/viewtopic.php?id=425 for more details. Regards, D.

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Nimp: Nested Imports (a la Java)
by Tomer Filiba June 16, 2011

June 16, 2011

Nimp (Nested Imports) is a little meta-importer hook for Python 2.3-2.7 and 3.0-3.2 that enables the use of *nested packages* (`com.ibm.foo.bar`), as is commonplace in Java and various other languages. It works by collecting all packages that begin with a common prefix on your `sys.path` and "merging" them into logical packages. Homepage: http://pypi.python.org/pypi/nimp Install: pip install nimp Example ------- Consider the following package layout (say, under site-packages, or anywhere on your python path): site-packages/ com-ibm-storage/ ... package files ... com-ibm-storage-plugins/ ... package files ... com-google-protobuf/ ... package files ... com-google-appengine/ ... package files ... Using Nimp is easy: import nimp nimp.install() You can place these two lines in your `site.py`; after calling `nimp.install()`, the following imports will "magically" work: import com # a namespace package (empty) import com.google.protobuf import com.ibm.storage from com.ibm.storage.plugins import MySQLPlugin

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PyCon Finland 2011 Call For Proposals
by Jyry Suvilehto June 16, 2011

June 16, 2011

PyCon Finland will take place October 17-18 in Turku. The first day will feature presentations and the second is reserved for sprints. We are currently accepting proposals for both talks and sprints. If you would like to give a presentation, organize a sprint or see presentations on a particular topic, please see instructions at http://python.fi/pyconfi. The deadline for proposals is 1.8. The organizers will notify accepted presenters and sprint coordinators by 14.8. The presentation slots will be 40 minutes + 10 minutes of discussion at the end. Shared sessions are also possible. The language for the presentations should be English to encourage international participation. We are also looking for sponsors for the event. If you are interested in sponsoring, please contact Python Finland at hallitus(a)python.fi for details about sponsorship packages. -- Jyry Suvilehto Spokesperson, Python Finland

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