Python-announce-list March 2010

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ANN: Veusz 1.7
by Jeremy Sanders 28 Mar '10

28 Mar '10

Veusz 1.7 --------- Velvet Ember Under Sky Zenith ----------------------------- http://home.gna.org/veusz/ Veusz is Copyright (C) 2003-2010 Jeremy Sanders <jeremy(a)jeremysanders.net> Licenced under the GPL (version 2 or greater). Veusz is a Qt4 based scientific plotting package. It is written in Python, using PyQt4 for display and user-interfaces, and numpy for handling the numeric data. Veusz is designed to produce publication-ready Postscript/PDF/SVG output. The user interface aims to be simple, consistent and powerful. Veusz provides a GUI, command line, embedding and scripting interface (based on Python) to its plotting facilities. It also allows for manipulation and editing of datasets. Data can be captured from external sources such as internet sockets or other programs. Changes in 1.7: * Widgets can be moved by dragged and dropped in the widget tree, or copied by holding down ctrl at the same time * Tick labels are centred if possible at the start and ends of axes * When putting graphs in grid, axis labels and tick labels are placed in much better positions * Embedding module is shipped in binary versions * Grid lines can be drawn on axis minor ticks * Contour widget can draw minor (dotted) contours between main contours * Logarithmic contours have proper logarithmic spacing * Fixes for widget names and dataset names with Unicode characters, including copy and paste * Optional smoothing in the image widget Minor changes: * Errors in evaluating expressions are logged in the console window, and do not show exceptions * Fix problems when importing multiple symbols from python modules in the custom import dialog * Use minus sign for negative numbers in tick labels, rather than hyphens * Contour widget lines can have transparency * Datasets are sorted by name when writing to saved document * Use correct status for paste button when starting application * Add option for extra space between axes and tick labels, and axis labels * Preference added for background color of exported bitmaps * Add IsClosed() and WaitForClose() embedding functions to check whether plot window is closed, or to wait for closing of plot window. Features of package: * X-Y plots (with errorbars) * Line and function plots * Contour plots * Images (with colour mappings and colorbars) * Stepped plots (for histograms) * Bar graphs * Plotting dates * Fitting functions to data * Stacked plots and arrays of plots * Plot keys * Plot labels * Shapes and arrows on plots * LaTeX-like formatting for text * EPS/PDF/PNG/SVG/EMF export * Scripting interface * Dataset creation/manipulation * Embed Veusz within other programs * Text, CSV and FITS importing * Data can be captured from external sources * User defined functions, constants and can import external Python functions Requirements for source install: Python (2.4 or greater required) http://www.python.org/ Qt >= 4.3 (free edition) http://www.trolltech.com/products/qt/ PyQt >= 4.3 (SIP is required to be installed first) http://www.riverbankcomputing.co.uk/pyqt/ http://www.riverbankcomputing.co.uk/sip/ numpy >= 1.0 http://numpy.scipy.org/ Optional: Microsoft Core Fonts (recommended for nice output) http://corefonts.sourceforge.net/ PyFITS >= 1.1 (optional for FITS import) http://www.stsci.edu/resources/software_hardware/pyfits pyemf >= 2.0.0 (optional for EMF export) http://pyemf.sourceforge.net/ For EMF and better SVG export, PyQt >= 4.6 or better is required, to fix a bug in the C++ wrapping For documentation on using Veusz, see the "Documents" directory. The manual is in PDF, HTML and text format (generated from docbook). The examples are also useful documentation. Issues with the current version: * Due to Qt, hatched regions sometimes look rather poor when exported to PostScript, PDF or SVG. * Due to a bug in Qt, some long lines, or using log scales, can lead to very slow plot times under X11. It is fixed by upgrading to Qt-4.5.1 (or using a binary). Switching off antialiasing in the options may help. If you enjoy using Veusz, I would love to hear from you. Please join the mailing lists at https://gna.org/mail/?group=veusz to discuss new features or if you'd like to contribute code. The latest code can always be found in the SVN repository.

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Call for papers (Deadline Extended): SETP-10, USA, July 2010
by James Heralds 27 Mar '10

27 Mar '10

It would be highly appreciated if you could share this announcement with your colleagues, students and individuals whose research is in software engineering, software testing, software quality assurance, software design and related areas. Call for papers (Deadline Extended): SETP-10, USA, July 2010 The 2010 International Conference on Software Engineering Theory and Practice (SETP-10) (website: http://www.PromoteResearch.org ) will be held during 12-14 of July 2010 in Orlando, FL, USA. SETP is an important event in the areas of Software development, maintenance, and other areas of software engineering and related topics. The conference will be held at the same time and location where several other major international conferences will be taking place. The conference will be held as part of 2010 multi-conference (MULTICONF-10). MULTICONF-10 will be held during July 12-14, 2010 in Orlando, Florida, USA. The primary goal of MULTICONF is to promote research and developmental activities in computer science, information technology, control engineering, and related fields. Another goal is to promote the dissemination of research to a multidisciplinary audience and to facilitate communication among researchers, developers, practitioners in different fields. The following conferences are planned to be organized as part of MULTICONF-10. • International Conference on Artificial Intelligence and Pattern Recognition (AIPR-10) • International Conference on Automation, Robotics and Control Systems (ARCS-10) • International Conference on Bioinformatics, Computational Biology, Genomics and Chemoinformatics (BCBGC-10) • International Conference on Computer Communications and Networks (CCN-10) • International Conference on Enterprise Information Systems and Web Technologies (EISWT-10) • International Conference on High Performance Computing Systems (HPCS-10) • International Conference on Information Security and Privacy (ISP-10) • International Conference on Image and Video Processing and Computer Vision (IVPCV-10) • International Conference on Software Engineering Theory and Practice (SETP-10) • International Conference on Theoretical and Mathematical Foundations of Computer Science (TMFCS-10) MULTICONF-10 will be held at Imperial Swan Hotel and Suites. It is a full-service resort that puts you in the middle of the fun! Located 1/2 block south of the famed International Drive, the hotel is just minutes from great entertainment like Walt Disney World® Resort, Universal Studios and Sea World Orlando. Guests can enjoy free scheduled transportation to these theme parks, as well as spacious accommodations, outdoor pools and on-site dining — all situated on 10 tropically landscaped acres. Here, guests can experience a full- service resort with discount hotel pricing in Orlando. We invite draft paper submissions. Please see the website http://www.PromoteResearch.org for more details. Sincerely James Heralds

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ANN: ActivePython 2.6.5.12 and 3.1.2.3 are now available
by Sridhar Ratnakumar 25 Mar '10

25 Mar '10

We are pleased to announce the availability of both ActivePython 2.6.5.12 and ActivePython 3.1.2.3. http://www.activestate.com/activepython/ Here is what you should know about these two releases: PyWin32: PyWin32 is now included in the 64-bit & Python3 builds! Since we recently updated our PyWin32 source tree, this release comes with several bug fixes. PyPM: There is now an “upgrade” feature in PyPM, our beloved Python Package Manager distributed with ActivePython free of charge. What this means is that if you type “pypm upgrade” it will update all your installed Python Packages to the latest version to save you time and keep you up-to-date. Switch between Python versions: Also new in this 2.6 release is a new tool called "pythonselect" that can be used to switch between multiple ActivePython versions. This is currently only supported on MacOSX although support for other platforms and, perhaps, other Python installations, is in the roadmap (patches are welcome too!). Dive Into Python 3: ActivePython 3.1.2.3 now includes Mark Pilgrim’s Dive Into Python 3, the popular advanced tutorial for learning Python3. You can find it in the documentation section. Miscellaneous: We also updated the base Tcl/Tk version to 8.5.8; added OpenSSL and ctypes support in the 64-bit build; upgraded to openssl-0.9.8l; included Tcl/Tk development headers – among several other bug fixes with IDLE and Tkinter installation. And of course, they use the latest Python version: 2.6.5 and 3.1.2. See the release notes for full details: http://docs.activestate.com/activepython/2.6/relnotes.html#changes http://docs.activestate.com/activepython/2.6/relnotes.html#changes And our blog post on this release: http://blogs.activestate.com/2010/03/activestate-releases-activepython-2-6-… What is ActivePython? --------------------- ActivePython is ActiveState's binary distribution of Python. Builds for Windows, Mac OS X, Linux are made freely available. Builds for Solaris, HP-UX and AIX, and access to older versions are available with ActivePython Business Edition: http://www.activestate.com/business_edition/ ActivePython includes the Python core and the many core extensions: zlib and bzip2 for data compression, the Berkeley DB (bsddb) and SQLite (sqlite3) database libraries, OpenSSL bindings for HTTPS support, the Tix GUI widgets for Tkinter, ElementTree for XML processing, ctypes (on supported platforms) for low-level library access, and others. The Windows distribution ships with PyWin32 -- a suite of Windows tools developed by Mark Hammond, including bindings to the Win32 API and Windows COM. Beginning with the 2.6.3.7 release, ActivePython includes a binary package manager for Python (PyPM) that can be used to install packages much easily. For example: pypm install pylons See this page for full details: http://docs.activestate.com/activepython/2.6/whatsincluded.html As well, ActivePython ships with a wealth of documentation for both new and experienced Python programmers. In addition to the core Python docs, ActivePython includes the "What's New in Python" series, "Dive into Python", the Python FAQs & HOWTOs, and the Python Enhancement Proposals (PEPs). An online version of the docs can be found here: http://docs.activestate.com/activepython/2.6/ We would welcome any and all feedback to: ActivePython-feedback(a)activestate.com Please file bugs against ActivePython at: http://bugs.activestate.com/query.cgi?set_product=ActivePython On what platforms does ActivePython run? ---------------------------------------- ActivePython includes installers for the following platforms: - Windows/x86 - Windows/x64 (aka "AMD64") - Mac OS X - Linux/x86 - Linux/x86_64 (aka "AMD64") - Solaris/SPARC (Business Edition only) - Solaris/x86 (Business Edition only) - HP-UX/PA-RISC (Business Edition only) - AIX/PowerPC (Business Edition only) - AIX/PowerPC 64-bit (Business Edition only) Custom builds are available in Enterprise Edition: http://www.activestate.com/activepython/enterprise/ Thanks, and enjoy! The Python Team -- Sridhar Ratnakumar sridharr at activestate.com

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pyexiv2 0.2.0 released
by Olivier Tilloy 25 Mar '10

25 Mar '10

Hello Python users and developers, I'm happy to announce that pyexiv2 0.2.0 [1], codename "Commuting", was released today, after almost two years of quite irregular development. pyexiv2 is a python binding to exiv2 [2], the C++ library for manipulation of EXIF, IPTC and XMP image metadata. It is a python module that allows your python scripts to read *and* write metadata (EXIF, IPTC, XMP, thumbnails) embedded in image files (JPEG, TIFF, ...). It is designed as a high-level interface to the functionalities offered by libexiv2. Using python's built-in data types and standard modules, it provides easy manipulation of image metadata. This new release is an almost complete, not backward compatible, rewrite of the 0.1 branch. Among other things, it features: - Support for reading and writing XMP metadata; - Support for reading images from stream; - A fully documented API (the documentation also includes a tutorial and detailed instructions for developers); - Compiled and tested on Linux and Windows; - A battery of unit tests that reasonably covers the code. Feedback, suggestions and bug reports are welcome at https://launchpad.net/pyexiv2. Cheers, Olivier [1] https://launchpad.net/pyexiv2/0.2.x/0.2 [2] http://exiv2.org

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Python Mastery Bootcamp - April 12-16, 2010 - Final Weeks to Register
by David Beazley 24 Mar '10

24 Mar '10

* * * Final Weeks to Register * * * Python Mastery Bootcamp with David Beazley, author "Python Essential Reference" April 12-16, 2010 Big Nerd Ranch Atlanta, Georgia http://wwww.bignerdranch.com/classes/python In a nutshell, the Python Mastery Bootcamp is the 5 most intensive days of Python training you're going to be able to find anywhere. While there are numerous introductory tutorials and courses that can teach you Python basics, this one-of-a-kind course is designed for software developers, system administrators, engineers, and scientists who are already writing Python code, but who want to dig deep and take their Python programming skills to a whole new level. The course starts with a brief review of Python programming basics and then immediately dives into more advanced aspects of the Python language including object-oriented and functional programming techniques, packaging and distribution, metaprogramming, advanced I/O handling, generators, coroutines, concurrency (threads and multiprocessing), distributed computing, and interfacing with foreign code written in C and C++. In addition, the course discusses issues associated with Python 3 including the problem of migrating existing Python code. Python Mastery Bootcamp is taught by David Beazley, author of the highly-acclaimed Python Essential Reference. David is also widely known for his past PyCon tutorials on advanced Python topics including generators, coroutines, and most recently, the Python 3 I/O system.

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ANN: eGenix mxODBC Zope Database Adapter 2.0.0
by eGenix Team: M.-A. Lemburg 24 Mar '10

24 Mar '10

________________________________________________________________________ ANNOUNCEMENT mxODBC Zope Database Adapter Version 2.0.0 for Zope and the Plone CMS Available for Zope 2.12 and later on Windows, Linux, Mac OS X, FreeBSD and other platforms This announcement is also available on our web-site for online reading: http://www.egenix.com/company/news/eGenix-mxODBC-Zope-DA-2.0.0-GA.html ________________________________________________________________________ INTRODUCTION The eGenix mxODBC Zope Database Adapter allows you to easily connect your Zope or Plone installation to just about any database backend on the market today, giving you the reliability of the commercially supported eGenix product mxODBC and the flexibility of the ODBC standard as middle-tier architecture. The mxODBC Zope Database Adapter is highly portable, just like Zope itself and provides a high performance interface to all your ODBC data sources, using a single well-supported interface on Windows, Linux, Mac OS X, FreeBSD and other platforms. This makes it ideal for deployment in ZEO Clusters and Zope hosting environments where stability and high performance are a top priority, establishing an excellent basis and scalable solution for your Plone CMS. ________________________________________________________________________ NEWS We are pleased to announce a new version 2.0 of our mxODBC Zope DA product. The new version was changes to conform with the new Zope 2.12 layout and installation system and includes many enhancements over our previous 1.0 version: * Includes mxODBC 3.1 with updated support for many current ODBC drivers, giving you more portability and features for a wider range of database backends. * Mac OS X 10.6 (Snow Leopard) support. * Python 2.5 and 2.6 support. * Zero maintenance support to automatically reconnect the Zope connection after a network or database problem. * More flexible Unicode support with options to work with pure Unicode, plain strings or mixed setups - even for databases that don't support Unicode * Automatic and transparent text encoding and decoding * More flexible date/time support including options to work with Python datetime objects, mxDateTime, strings or tuples * New decimal support to have the Zope DA return decimal column values using Python's decimal objects. * Fully eggified to simplify easy_install and buildout based installation ________________________________________________________________________ UPGRADING If you have already bought mxODBC Zope DA 1.0.x licenses, we offer you a time limited upgrade option: * If you have purchased the licenses between 2009-06-01 and 2009-12-31 you can get a 20% discount on the full price of version 2.0. * If you have purchased the licenses after 2010-01-01 you can get a 40% discount on the full price of version 2.0. This offer is time limited until 2010-09-30. Please write to sales(a)egenix.com for details on how to get the needed discount coupons. ________________________________________________________________________ MORE INFORMATION For more information on the mxODBC Zope Database Adapter, licensing and download instructions, please visit our web-site: http://www.egenix.com/products/zope/mxODBCZopeDA/ You can buy mxODBC Zope DA licenses online from the eGenix.com shop at: http://shop.egenix.com/ ________________________________________________________________________ Thank you, -- Marc-Andre Lemburg eGenix.com Professional Python Services directly from the Source (#1, Mar 24 2010) >>> Python/Zope Consulting and Support ... http://www.egenix.com/ >>> mxODBC.Zope.Database.Adapter ... http://zope.egenix.com/ >>> mxODBC, mxDateTime, mxTextTools ... http://python.egenix.com/ ________________________________________________________________________ ::: 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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PyEigen 0.1
by Jussi 24 Mar '10

24 Mar '10

I'm happy to announce PyEigen, a new linear algebra module for Python that's many times faster than existing solutions. Notably, PyEigen is about 10x faster than NumPy for 4x4 matrix multiplication and 4x faster than cgkit 1.2.0, the fastest current solution. Python Package Index: http://pypi.python.org/pypi/PyEigen/ Launchpad project page: http://launchpad.net/pyeigen Development blog: http://www.brainfold.org/blog About ===== PyEigen is a Python wrapper for the C++ linear algebra library Eigen. PyEigen is currently considered PRE-ALPHA quality software and has not been widely tested outside the unit tests. The API is not stable yet and might change between releases without warning. Testing and all kinds of feedback are welcome however! Compatibility reports with different operating systems, compilers and Python versions are especially welcome. Features ======== The first release of PyEigen includes basic support for fixed-size vectors (2-4-dimensional) and matrices (2x2, 3x3 and 4x4).

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rst2pdf 0.14 released!
by Roberto Alsina 23 Mar '10

23 Mar '10

It's my pleasure to announce that I just uploaded rst2pdf 0.14 to the site at http://rst2pdf.googlecode.com. Rst2pdf is a program and a library to convert restructured text directly into PDF using Reportlab. It supports True Type and Type 1 font embedding, most raster and vector image formats, source code highlighting, arbitrary text frames in a page, cascading stylesheets, the full restructured text syntax and much, much more. It also includes a sphinx extension so you can use it to generate PDFs from documents built with Sphinx. In case of problems, please report them in the Issue tracker (http://code.google.com/p/rst2pdf/issues/list) or the mailing list (http://groups.google.com/group/rst2pdf-discuss) This release fixes several bugs and adds some minor features compared to 0.13.2. Here are some of the changes: * Fixed Issue 197: Table borders were confusing. * Fixed Issue 297: styles from default.json leaked onto other syntax highlighting stylesheets. * Fixed Issue 295: keyword replacement in headers/footers didn't work if ###Page### and others was inside a table. * New feature: oddeven directive to display alternative content on odd/even pages (good for headers/footers!) * Switched all stylesheets to more readable RSON format. * Fixed Issue 294: Images were deformed when only height was specified. * Fixed Issue 293: Accept left/center/right as alignments in stylesheets. * Fixed Issue 292: separate style for line numbers in codeblocks * Fixed Issue 291: support class directive for codeblocks * Fixed Issue 104: total number of pages in header/footer works in all cases now. * Fixed Issue 168: linenos and linenothreshold options in Sphinx now work correctly. * Fixed regression in 0.12 (interaction between rst2pdf and sphinx math) * Documented extensions in the manual * Better styling of bullets/items (Issue 289) * Fixed Issue 290: don't fail on broken images * Better font finding in windows (patch by techtonik, Issue 282). * Fixed Issue 166: Implemented Sphinx's hlist (horizontal lists) * Fixed Issue 284: Implemented production lists for sphinx * Fixed Issue 165: Definition lists not properly indented inside admonitions or tables. * SVG Images work inline when using the inkscape extension. * Fixed Issue 268: TOCs shifted to the left on RL 2.4 * Fixed Issue 281: sphinx test automation was broken * Fixed Issue 280: wrong page templates used in sphinx Enjoy!

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Python Ireland presents April Talks @ DSE (Wed 14th April, 19:00)
by Vicky Twomey-Lee 23 Mar '10

23 Mar '10

Hi All, When: Wed, 14th April 2010, 19:00 Where: Dublin School of English, Dollard House, 2-5 Wellington Quay, Dublin 2 (Around the corner from Porterhouse on the quays). [19:00 - 19:30] web.py: Why and how - Niall O'Connor [19:45 - 20:15] Use of Django at Jolt Online - Jaime Buelta [20:30 - 21:00] Open floor - lightning talks * Pub afterwards More info - http://www.python.ie/meetup/2010/april_2010_talks__dse/ Thanks to Jolt Online Gaming for sponsoring the venue. ( http://joltonline.com/) Cheers, /// Vicky ~~~~~~~~~~~~~~~~~~~~~~~~~ ~~ http://irishbornchinese.com ~~ ~~ http://www.python.ie ~~ ~~~~~~~~~~~~~~~~~~~~~~~~~

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Greenlet 0.3 released
by Kyle Ambroff 23 Mar '10

23 Mar '10

Come and get it: http://pypi.python.org/packages/source/g/greenlet/greenlet-0.3.tar.gz New in this release ------------------- * Python 3 support. * greenlet.switch() now accept's keyword arguments. * New C API to expose Greenlets to C Extensions. * Fix Python crasher caused by switching to new inactive greenlet created in another thread. * Fix Python 2.6 crash on Windows when built with VS2009. (arigo) * arm32 support from stackless (Sylvain Baro) * Linux mips support (Thiemo Seufer) * MingGW GCC 4.4 support (Giovanni Bajo) * Fix for a threading bug (issue 40 in py lib) (arigo and ghazel) * Add documentation from py lib. * General code, documentation and repository cleanup (Kyle Ambroff, Jared Kuolt) What is Greenlet? ----------------- The greenlet package is a spin-off of Stackless, a version of CPython that supports micro-threads called "tasklets". Tasklets run pseudo-concurrently (typically in a single or a few OS-level threads) and are synchronized with data exchanges on "channels". A "greenlet", on the other hand, is a still more primitive notion of micro-thread with no implicit scheduling; coroutines, in other words. greenlet is the standalone package derived from the py lib[0], and is used by several non-blocking IO packages as a more flexible alternative to Python's built in coroutines. * concurrence * eventlet * gevent Links ----- Full release notes: http://blog.ambroff.com/2010/03/23/announcing-greenlet-0-3/ PyPI http://pypi.python.org/pypi/greenlet/0.3 Mercurial repository: http://bitbucket.org/ambroff/greenlet Documentation: http://packages.python.org/greenlet/ -Kyle Ambroff [0] http://codespeak.net/py/dist/

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Python-announce-list March 2010