Mailman 3 November 2009 - Python-announce-list

ANN: Urwid 0.9.9 - Console UI Library
by Ian Ward 17 Nov '09

17 Nov '09

Announcing Urwid 0.9.9 ---------------------- Urwid home page: http://excess.org/urwid/ Updated screen shots: http://excess.org/urwid/examples.html Tarball: http://excess.org/urwid/urwid-0.9.9.tar.gz RSS: http://excess.org/feeds/tag/urwid/ About this release: =================== This release includes many new features developed since the last major release. Urwid now supports 256 and 88 color terminals. A new MainLoop class has been introduced to tie together widgets, user input, screen display and an event loop. Twisted and GLib-based event loops are now supported directly. A new AttrMap class now allows mapping any attribute to any other attribute. Most of the code base has been cleaned up and now has better documentation and testing. Lots of other improvements are listed below. New in this release: ==================== * New support for 256 and 88 color terminals with raw_display and html_fragment display modules * New palette_test example program to demonstrate high color modes * New AttrSpec class for specifying specific colors instead of using attributes defined in the screen's palette * New MainLoop class ties together widgets, user input, screen display and one of a number of new event loops, removing the need for tedious, error-prone boilerplate code * New GLibEventLoop allows running Urwid applications with GLib (makes D-Bus integration easier) * New TwistedEventLoop allows running Urwid with a Twisted reactor * Added new docstrings and doctests to many widget classes * New AttrMap widget supports mapping any attribute to any other attribute, replaces AttrWrap widget * New WidgetDecoration base class for AttrMap, BoxAdapter, Padding, Filler and LineBox widgets creates a common method for accessing and updating their contained widgets * New left and right values may be specified in Padding widgets * New command_map for specifying which keys cause actions such as clicking Button widgets and scrolling ListBox widgets * New tty_signal_keys() method of raw_display.Screen and curses_display.Screen allows changing or disabling the keys used to send signals to the application * Added helpful __repr__ for many widget classes * Updated all example programs to use MainLoop class * Updated tutorial with MainLoop usage and improved examples * Renamed WidgetWrap.w to _w, indicating its intended use as a way to implement a widget with other widgets, not necessarily as a container for other widgets * Replaced all tabs with 4 spaces, code is now more aerodynamic (and PEP 8 compliant) * Added saving of stdin and stdout in raw_display module allowing the originals to be redirected * Updated BigText widget's HalfBlock5x4Font * Fixed graph example CPU usage when animation is stopped * Fixed a memory leak related to objects listening for signals * Fixed a Popen3 deprecation warning About Urwid =========== Urwid is a console UI library for Python. It features fluid interface resizing, UTF-8 support, multiple text layouts, simple attribute markup, powerful scrolling list boxes and flexible interface design. Urwid is released under the GNU LGPL.

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ANN: PyIMSL Studio 1.5 now available at no charge for non-commercial use
by Steve Lang 17 Nov '09

17 Nov '09

Visual Numerics, a Rogue Wave Software Company, is making PyIMSL Studio 1.5 available for download at no charge for non-commercial use or for commercial evaluation. Learn more about PyIMSL Studio and download at: http://www.vni.com/campaigns/pyimslstudioeval PyIMSL Studio contains both open source and proprietary components that create a fully supported and documented platform for analytic prototyping and production development. - For prototyping, a number of open source tools including Python, NumPy, Eclipse, matplotlib and commercial components from Visual Numerics, Inc. are available for Python, including Python wrappers to the mathematics and statistics algorithms in the IMSL Numerical Library which are incorporated in the distribution. This combination of tools provides a rich environment for prototype development. - For production deployment, commercial users of PyIMSL Studio also have access to the IMSL C Library to allow the development of native C implementations of algorithms for high performance production code. Using the IMSL C Library provides parity between prototype and production code. The IMSL Numerical Libraries have been the cornerstone of high-performance and desktop computing as well as predictive analytics applications in science, technical and business environments for well over three decades. Functional areas include: Mathematics * Matrix Operations * Linear Algebra * Eigensystems * Interpolation & Approximation * Numerical Quadrature * Differential Equations * Transforms * Nonlinear Equations * Optimization * Special Functions * Finance & Bond Calculations Statistics * Basic Statistics * Time Series & Forecasting * Multivariate Analysis * Nonparametric Tests * Correlation & Covariance * Regression * Analysis of Variance and Designed Experiments * Categorical and Discrete Data Analysis * Survival and Reliability Analysis * Goodness of Fit * Distribution Functions * Random Number Generation * Neural Networks * Genetic Algorithm * Naïve Bayes

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Python-URL! - weekly Python news and links (Nov 16)
by Gabriel Genellina 16 Nov '09

16 Nov '09

QOTW: "The promise is 'batteries included.' Nobody promised you a nickel metal hydride battery that you can use as a replacement in your Prius." - Stephen J. Turnbull http://mail.python.org/pipermail/python-dev/2009-November/094014.html Google's new language, Go, has similarities to Python: http://groups.google.com/group/comp.lang.python/t/c1c4a8fe741c689a/ Is Python scalable enough for Google (or any other huge application)? http://groups.google.com/group/comp.lang.python/t/ceef2ae6b4472b61/ Is it possible to get the physical memory address of a variable in python? http://groups.google.com/group/comp.lang.python/t/969462b9a3b452/ Serialize objects as Python code: http://groups.google.com/group/comp.lang.python/t/98536e7910e65256/ Overriding __getitem__ for a subclass of dict: http://groups.google.com/group/comp.lang.python/t/d9b822119fc0917c/ Ensure a script is run with a certain range of Python versions: http://groups.google.com/group/comp.lang.python/t/d21a492be99c90e8/ How to install applications when Python is not already present: http://groups.google.com/group/comp.lang.python/t/495794a40d18fbc/ Turtle graphics are just for kids - or not? Its advantages when teaching Python programming: http://groups.google.com/group/comp.lang.python/t/d55388b0fdd9ed2f/ Using dynamic property names: http://groups.google.com/group/comp.lang.python/t/f7b8829c97dcc3f9/ How can a module react differently when imported from one place or another? http://groups.google.com/group/comp.lang.python/t/da162dc08f1c3550/ Sharing distributed objects between Python and C++: http://groups.google.com/group/comp.lang.python/t/5a567a1a180511eb/ Beware: threads + import don't mix well! http://groups.google.com/group/comp.lang.python/t/a60c83590a016528/ locals() and frame.f_locals return old data: http://groups.google.com/group/comp.lang.python/t/fa17941218c6e89e/ Instantiate classes using names from the command line: http://groups.google.com/group/comp.lang.python/t/d597a1a42b88c0d1/ New syntax proposal: if some_expression as x: do_something_with(x) http://groups.google.com/group/comp.lang.python/t/55e7578903747dc4/ ======================================================================== 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" site: 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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Elixir 0.7.1 released
by Gaetan de Menten 16 Nov '09

16 Nov '09

I am very pleased to announce that version 0.7.1 of Elixir (http://elixir.ematia.de) is now available. As always, feedback is very welcome, preferably on Elixir mailing list. This release packs a few interesting new features (abstract classes and a new collection type providing explicit relative resolution of target entities) and some bug fixes. It is a safe upgrade from the 0.7.0 release. The full list of changes can be seen at: http://elixir.ematia.de/trac/browser/elixir/tags/0.7.1/CHANGES What is Elixir? --------------------- Elixir is a declarative layer on top of the SQLAlchemy library. It is a fairly thin wrapper, which provides the ability to create simple Python classes that map directly to relational database tables (this pattern is often referred to as the Active Record design pattern), providing many of the benefits of traditional databases without losing the convenience of Python objects. Elixir does not intend to replace SQLAlchemy's core features, and instead focuses on providing a simpler syntax for defining model objects when you do not need the full expressiveness of SQLAlchemy's manual mapper definitions. Mailing list ---------------- http://groups.google.com/group/sqlelixir/about -- Gaëtan de Menten http://openhex.org

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ANN: easygconf 0.02
by Florian Diesch 16 Nov '09

16 Nov '09

I'm happy to announce easygconf 0.02. Get it at http://www.florian-diesch.de/software/easygconf easygconf provids an easy, pythonic way to access GConf through a dict-like interface. Example ------- from easygconf import GConfDict import gtk key = 'test gc=GConfDict('/apps/easygconftest') print "%s is %s"%(key, gc[key]) gc[key] = 'foo' print "Now %s is %s"%(key, gc[key]) def callback (key, value, gconfdict, id, args): print "%s changed to %s"%(key, value) gc.add_listner('test', callback) try: gtk.main() except KeyboardInterrupt: pass gc.unset('test') Florian -- <http://www.florian-diesch.de/>

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gevent 0.11.1 released
by Denis Bilenko 15 Nov '09

15 Nov '09

gevent is a coroutine-based Python networking library that uses greenlet to provide a high-level synchronous API on top of libevent event loop. Features include: * convenient API around greenlets * familiar synchronization primitives (gevent.event, gevent.queue) * socket module that cooperates * WSGI server on top of libevent-http * DNS requests done through libevent-dns * monkey patching utility to get pure Python modules to cooperate 0.11.1 fixes a few bugs: * Fixed bug in select.select() function. Passing non-empty list of write descriptors used to cause this function to fail. * Changed setup.py to go ahead with the compilation even if the actual version of libevent cannot be determined (version 1.x.x is assumed in that case). * Fixed wsgi‘s start_response to recognize exc_info argument. * Fixed setup.py to look for libevent.dylib rather than .so on Darwin platforms. Thanks to Ludvig Ericson for contributing the last two items. Get it on PyPI: http://pypi.python.org/pypi/gevent Homepage: http://gevent.org/

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November 20 Webinar: Interpolation with NumPy/SciPy
by Amenity Applewhite 14 Nov '09

14 Nov '09

Having trouble viewing this email? Click here Friday, November 20: Interpolation with NumPy/SciPy Dear Amenity, It's time for our mid-month Scientific Computing with Python webinar! This month's topic is sure to prove very useful for data analysts: Interpolation with NumPy and SciPy. In many data-processing scenarios, it is necessary to use a discrete set of available data-points to infer the value of a function at a new data-point. One approach to this problem is interpolation, which constructs a new model-function that goes through the original data- points. There are many forms of interpolation - polynomial, spline, kriging, radial basis function, etc. - and SciPy includes some of these interpolation forms. This webinar will review the interpolation modules available in SciPy and in the larger Python community and provide instruction on their use via example. Scientific Computing with Python Webinar: Interpolation with NumPy/SciPy Friday, November 20 1pm CDT/7pm UTC Register at GoToMeeting We look forward to seeing you Friday! As always, feel free to contact us with questions, concerns, or suggestions for future webinar topics. Thanks, The Enthought Team QUICK LINKS ::: www.enthought.com code.enthought.com Facebook Enthought Blog Forward email This email was sent to amenity(a)enthought.com by amenity(a)enthought.com. Update Profile/Email Address | Instant removal with SafeUnsubscribe™ | Privacy Policy. Enthought, Inc. | 515 Congress Ave. | Suite 2100 | Austin | TX | 78701

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Announcing a bugfix update (v1.6.4) of YaMA, the meeting assistant
by Atul 14 Nov '09

14 Nov '09

Hi, Yet Another Meeting Assistant (YaMA), will help you with the Agenda, Meeting Invitations, Minutes of a Meeting as well as Action Points. If you are the assigned minute taker at any meeting, this tool is for you. Checkout http://yama.sourceforge.net/ YaMA is written in Python and Tkinter, is open source software released under GPLv2, and is hosted by SourceForge (www.sourceforge.net) Whats New in version 1.6.4 : 1. Interoperability enhancements: export Action Points to Wiki and CSV formats 2. Minor Bug Fixes -- Atul

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ANN: PyGUI 2.1
by Greg Ewing 13 Nov '09

13 Nov '09

PyGUI 2.1 is available: http://www.cosc.canterbury.ac.nz/greg.ewing/python_gui/ Highlights of this version: * Win32: Fixed bug preventing PyGUI apps from working under pythonw Fixed incorrect mouse coordinates in ScrollableView Added more standard cursors * MacOSX: Application menu now has working Hide, Hide Others and Show All commands. Plus a few other bug fixes and improvements. What is PyGUI? -------------- PyGUI is a cross-platform GUI toolkit designed to be lightweight and have a highly Pythonic API.

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PyCon talks announced
by Catherine Devlin 13 Nov '09

13 Nov '09

It's true: the PyCon program committee intends to kill you all through exhaustion. But you'll die happy. The PyCon program committee has announced an unprecedented program of 95 talks for PyCon 2009. Talk abstracts can be browsed at http://us.pycon.org/2010/conference/talks/. With a record-breaking pool of submissions to choose from, the committee has assembled a program of enormous variety and quality, representing topics across the whole range of Python programming. Talks cover not just Python's traditional CPython implementation, but newer Python implementations on a variety of platforms, including Java, .NET, Parrot, and Python itself. As always, scheduled talks are only the tip of the PyCon iceberg, which also includes tutorials, Open Spaces, keynotes, Lightning Talks, poster sessions, development sprints, hands-on lab, exhibit hall, and no end of unscheduled discussion and fun. PyCon 2010 takes place Feb. 17-25 in Atlanta, GA; see us.pycon.org. -- - Catherine http://catherinedevlin.blogspot.com/ *** PyCon * Feb 17-25, 2010 * Atlanta, GA * us.pycon.org ***

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