Mailman 3 September 2010 - Python-announce-list

EPD Webinar: How to solve ODEs with SciPy
by Amenity Applewhite 07 Sep '10

07 Sep '10

Enthought Python Distribution Webinar September 10 This Friday,Warren Weckesser will host the first of three webinars in a series on solving differential equations in Python. We will take a close look at the two tools available for solving ordinary differential equations in SciPy: the "odeint" function and the "ode" class. Two examples will be discussed: (1) the famous Lorenz equations that exhibit chaos, and (2) the Gray-Scott reaction-diffusion equations in 1D, from which we will obtain a system of ordinary differential equations by using the "Method of Lines". The demonstrations also include 3D plots and animation using Matplotlib. Enthought Python Distribution Webinar How do I...solve differential equations with Python? Part I: SciPy Tools Friday, September 10: 1pm CST/6pm UTC Wait list (for non EPD subscribers): email:amenity@enthought.com Early in 2011, Warren will host Part II: boundary value problems, and in the spring he'll follow up with a third installment to the series. Have a fantastic September, The Enthought Team

1 0

Pydev 1.6.2 Released
by Fabio Zadrozny 07 Sep '10

07 Sep '10

Hi All, Pydev 1.6.2 has been released Details on Pydev: http://pydev.org Details on its development: http://pydev.blogspot.com Release Highlights: ------------------------------- * Pydev is now also distributed with Aptana Studio 3, so it can be gotten in a version that doesn't require installing it as a separate plugin. Get it at: http://aptana.com/products/studio3/download * Django templates editor (requires Aptana Studio 3) o Supports HTML files with HTML, CSS and Javascript o Supports CSS files o Outline page o Code-completion for Django templates based on templates (window > preferences > pydev > django templates editor > templates) o Code-completion for HTML, CSS and Javascript o Syntax highlighting based on the templates with the 'Django tags' context o Colors based on the Aptana themes * Python 2.7 grammar supported * Fixed indexing issue on contents getting getting stale in the cache * Fixed issue where the partitioning became wrong when entering a multiline string * Colors in the compare editor are now correct when using the Aptana themes * Extract method refactoring now works with "import" and "from ... import" inside a method * Source folders now appear before other folders * Fixed False positive on code analysis when using the property decorator What is PyDev? --------------------------- PyDev is a plugin that enables users to use Eclipse for Python, Jython and IronPython 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/ Pydev - Python Development Environment for Eclipse http://pydev.org http://pydev.blogspot.com

1 0

The PSF Blog Gets a Transfusion!
by Mike Driscoll 06 Sep '10

06 Sep '10

The Python Software Foundation’s Blog staff has been recently expanded by a new set of top-notch bloggers to bring you the latest in PSF news, ranging from the scintillating projects that the PSF has its fingers in to the mundane, but necessary board minutes. Don’t despair if you hate reading blogs! The blog also has a handy RSS feed and a mailing list! You can take your pick of these delivery methods by visiting the blog, at http://pyfound.blogspot.com/

1 0

bzr 2.2.0 released!
by Vincent Ladeuil 06 Sep '10

06 Sep '10

The Bazaar team is happy to announce availability of a new release of the bzr adaptive version control system. Bazaar is part of the GNU system <http://gnu.org/>. Thanks to everyone who contributed patches, suggestions, and feedback. Bazaar is now available for download from https://launchpad.net/bzr/2.2/2.2.0 as a source tarball or packaged for various systems. This release marks the start of another long-term-stable series. From here, we will only make bugfix releases on the 2.2 series (2.2.1, etc), while 2.3 will become our new development series. The 2.0 and 2.1 series will also continue to get bugfixes. (Currently 2.0 is planned to be supported for another 6 months.) This is primarily a bugfix and polish release over the 2.1 series, with a large number of bugs fixed (>120), and some performance improvements. There are some compatibility changes in this release. For users of bzrlib as a library, we now request that they call "bzrlib.initialize" and use the returned context manager appropriately. For commandline users we no longer guess user identity for "bzr commit", users must specify their identity using "bzr whoami" (you don't need to specify your identity for readonly operations). Users are encouraged to upgrade from the other stable series.

1 0

[RELEASED] Python 3.2 alpha 2
by Georg Brandl 06 Sep '10

06 Sep '10

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On behalf of the Python development team, I'm happy to announce the second alpha preview release of Python 3.2. Python 3.2 is a continuation of the efforts to improve and stabilize the Python 3.x line. Since the final release of Python 2.7, the 2.x line will only receive bugfixes, and new features are developed for 3.x only. Since PEP 3003, the Moratorium on Language Changes, is in effect, there are no changes in Python's syntax and built-in types in Python 3.2. Development efforts concentrated on the standard library and support for porting code to Python 3. Highlights are: * numerous improvements to the unittest module * PEP 3147, support for .pyc repository directories * PEP 3149, support for version tagged dynamic libraries * an overhauled GIL implementation that reduces contention * many consistency and behavior fixes for numeric operations * countless fixes regarding string/unicode issues; among them full support for a bytes environment (filenames, environment variables) * a sysconfig module to access configuration information * a pure-Python implementation of the datetime module * additions to the shutil module, among them archive file support * improvements to pdb, the Python debugger For an extensive list of changes in 3.2, see Misc/NEWS in the Python distribution. To download Python 3.2 visit: http://www.python.org/download/releases/3.2/ 3.2 documentation can be found at: http://docs.python.org/3.2/ Please consider trying Python 3.2 with your code and reporting any bugs you may notice to: http://bugs.python.org/ Enjoy! - -- Georg Brandl, Release Manager georg at python.org (on behalf of the entire python-dev team and 3.2's contributors) -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.16 (GNU/Linux) iEYEARECAAYFAkyEpLkACgkQN9GcIYhpnLCzSwCdFyPz1dPEehJZmeW8wDltqkqe /ogAnim1J99qDpeLmcUDTf0YBh1W95vf =x+ee -----END PGP SIGNATURE-----

1 0

NEW htmlgen package released!
by Sunjay Varma 04 Sep '10

04 Sep '10

Hello everyone! I have just released my new package htmlgen! Loosely based off of the old HTMLgen package, my scripts are very reusable and super extendible! I posted a bunch of details and information on my blog: http://blog.sunjay-varma.com/348/python-htmlgen-python-2-73-only/ For a demo of it's powers, I created this example: http://software.sunjay-varma.com/cgi-bin/gencalendar.py It uses the cgi, calendar, and htmlgen modules for HTML generation! Sunjay V. - www.sunjay-varma.com

1 0

[ANN] guiqwt v2.0.3
by Pierre.RAYBAUT＠CEA.FR 03 Sep '10

03 Sep '10

Hi all, I am pleased to announce that `guiqwt` v2.0.3 has been released. This library was initially written to help me to develop signal/image processing software for internal use only, but after a long process I've just been able to share this work with the scientific Python community. Based on PyQwt (plot widgets for PyQt4 graphical user interfaces) and on scientific modules NumPy and SciPy, guiqwt is a Python library for efficient 2-D data plotting (curves, 1-D and 2-D histograms, images) and signal/image processing application development. As you certainly know, the most popular Python module for data plotting is currently matplotlib, an open-source library providing a lot of plot types and an API (the pylab interface) which is very close to MATLAB's plotting interface. guiqwt plotting features are quite limited in terms of plot types compared to matplotlib. However the currently implemented plot types are much more efficient. For example, the guiqwt image showing function (imshow) do not make any copy of the displayed data, hence allowing to show images much larger than with its matplotlib's counterpart. In other terms, when showing a 30-MB image (16-bits unsigned integers for example) with guiqwt, no additional memory is wasted to display the image (except for the offscreen image of course which depends on the window size) whereas matplotlib takes more than 600-MB of additional memory (the original array is duplicated four times using 64-bits float data types). guiqwt also provides the following features: guiqwt.pyplot: equivalent to matplotlib's pyplot module (pylab) supported plot items: * curves, error bar curves and 1-D histograms * images (RGB images are not supported), images with non-linear x/y scales, images with specified pixel size (e.g. loaded from DICOM files), 2-D histograms, pseudo-color images (pcolor) * labels, curve plot legends * shapes: polygon, polylines, rectangle, circle, ellipse and segment * annotated shapes (shapes with labels showing position and dimensions): rectangle with center position and size, circle with center position and diameter, ellipse with center position and diameters (these items are very useful to measure things directly on displayed images) curves, images and shapes: * multiple object selection for moving objects or editing their properties through automatically generated dialog boxes (guidata) * item list panel: move objects from foreground to background, show/hide objects, remove objects, ... * customizable aspect ratio * a lot of ready-to-use tools: plot canvas export to image file, image snapshot, image rectangular filter, etc. curves: * interval selection tools with labels showing results of computing on selected area * curve fitting tool with automatic fit, manual fit with sliders, ... images: * contrast adjustment panel: select the LUT by moving a range selection object on the image levels histogram, eliminate outliers, ... * X-axis and Y-axis cross-sections: support for multiple images, average cross-section tool on a rectangular area, ... * apply any affine transform to displayed images in real-time (rotation, magnification, translation, horizontal/vertical flip, ...) application development helpers: * ready-to-use curve and image plot widgets and dialog boxes * load/save graphical objects (curves, images, shapes) * a lot of test scripts which demonstrate guiqwt features guiqwt has been successfully tested on GNU/Linux and Windows platforms. Python package index page: http://pypi.python.org/pypi/guiqwt/ Documentation, screenshots: http://packages.python.org/guiqwt/ Downloads (source + Python(x,y) plugin): http://sourceforge.net/projects/guiqwt/ Cheers, Pierre --- Dr. Pierre Raybaut CEA - Commissariat à l'Energie Atomique et aux Energies Alternatives

1 0

[ANN] guidata v1.2.1
by Pierre.RAYBAUT＠CEA.FR 03 Sep '10

03 Sep '10

Hi all, I am pleased to announce that `guidata` v1.2.1 has been released. This library was initially written to help me to develop software for internal use only, but after a long process I've just been able to share this work with the Python community. Based on the Qt Python binding module PyQt4, guidata is a Python library for easy data set edition (and display) thanks to automatically generated graphical user interfaces - it also provides helpers and application development tools for PyQt4. guidata also provides the following features: * guidata.qthelpers: PyQt4 helpers * guidata.disthelpers: py2exe helpers * guidata.userconfig: .ini configuration management helpers (based on Python standard module ConfigParser) * guidata.configtools: library/application data management * guidata.gettext_helpers: translation helpers (based on the GNU tool gettext) * guidata.guitest: automatic GUI-based test launcher * guidata.utils: miscelleneous utilities guidata has been successfully tested on GNU/Linux and Windows platforms. Python package index page: http://pypi.python.org/pypi/guidata/ Documentation, screenshots: http://packages.python.org/guidata/ Downloads (source + Python(x,y) plugin): http://sourceforge.net/projects/guidata/ Cheers, Pierre --- Dr. Pierre Raybaut CEA - Commissariat à l'Energie Atomique et aux Energies Alternatives

1 0

ATpy 0.9.4 Release
by Astronomical Python 02 Sep '10

02 Sep '10

We are pleased to announce the release of ATpy 0.9.4! ATpy is a high-level Python package providing a generic Table class that can contain data and meta-data, and includes column manipulation, row selection, and sorting methods. In addition, read and write methods are provided to to seamlessly read and write table data to a number of formats, building on existing Python modules. More information and links to download the latest version of ATpy can be found at http://atpy.sourceforge.net/ The main changes in this version are: - support for reading and writing HDF5 files via the h5py package, including support for reading/writing to groups. For more information, see http://atpy.sourceforge.net/format_hdf5.html - support for reading arbitrary ASCII tables via the asciitable package, which includes pre-defined formats such as Machine Readable Tables, RDB tables, and DAOPhot tables. For more information, see http://atpy.sourceforge.net/format_ascii.html - reading in of large FITS tables has been sped up by a factor of 10-20x - minor improvements and bug fixes Bug reports and feature requests should be submitted to the Sourceforge trackers at: https://sourceforge.net/tracker/?group_id=259666 Please do not hesitate to let us know if you encounter any problems with this release, Cheers, Thomas Robitaille and Eli Bressert

1 0

pyCologne Python User Group Cologne - Meeting, September 08, 2010, 6.30pm
by Andi Albrecht 02 Sep '10

02 Sep '10

Hello, The next meeting of pyCologne will take place: Wednesday, September, 8th starting about 6.30 pm - 6.45 pm at Room 0.14, Benutzerrechenzentrum (RRZK-B) University of Cologne, Berrenrather Str. 136, 50937 Köln, Germany Agenda: - Cooking Eggs - A distutils & setuptools recipe book (Christopher Arndt) - Lightning Talks Further discussion topics, news, book-presentations etc. are welcome on each of our meetings! At about 8.30 pm we will as usual enjoy the rest of the evening in a nearby restaurant. Further information including directions how to get to the location can be found at: http://www.pycologne.de (Sorry, the web-links are in German only.) Best Wishes, Andi

1 0