Mailman 3 October 2008 - Python-announce-list

ANN: python-aspects 1.2 released
by Antti Kervinen 09 Oct '08

09 Oct '08

Hello! aspects.py is a lightweight and low-level library for intercepting function calls. Functions and methods (also in Python standard library and third party code) can be wrapped so that when they are called, the wrap is invoked first. Depending on the wrap, the execution of the original function can be omitted, or the function can be called arbitrarily many times. Wraps are able to modify the call arguments and the return values of wrapped functions and handle exceptions. There can be many wraps on the same function. The wraps can be enabled, disabled and removed in any order. python-aspects-1.2.tar.gz released in October, 2008. What's new: * without_wrap() function for removing arbitrary wraps around functions or methods. This works for new-style wraps only. So far, only the topmost wraps could be peeled. The library is available for download at http://www.cs.tut.fi/~ask/aspects/ under LGPL 2.1 license. Enjoy! -- Antti

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wxPython binaries for Python 2.6
by Robin Dunn 08 Oct '08

08 Oct '08

Hi All, A set of wxPython binaries for Python 2.6 on Win32, Win64 and Mac OS X are now available at http://wxpython.org/download.php What is wxPython? ----------------- wxPython is a GUI toolkit for the Python programming language. It allows Python programmers to create programs with a robust, highly functional graphical user interface, simply and easily. It is implemented as a Python extension module that wraps the GUI components of the popular wxWidgets cross platform library, which is written in C++. wxPython is a cross-platform toolkit. This means that the same program will usually run on multiple platforms without modifications. Currently supported platforms are 32-bit and 64-bit Microsoft Windows, most Linux or other Unix-like systems using GTK2, and Mac OS X 10.4+. In most cases the native widgets are used on each platform to provide a 100% native look and feel for the application. -- Robin Dunn Software Craftsman http://wxPython.org Java give you jitters? Relax with wxPython!

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ANN: Solu 0.1 - Office Resource Finder
by Heikki Toivonen 08 Oct '08

08 Oct '08

Solu is a simple web application meant for making it easy to find colleagues, meeting rooms and other resources in an office. Great when you are new in a company and don't know where everyone and everything is located in! In other words, Solu is the "cubicle finder". And if you have ever configured a printer for a computer and being frustrated with the printer dialog that only showed the IP address but not where the printer was located, Solu can help! It has a self service model without any authentication or permission checks, where anyone can find and update any resource's information. Besides the easy installation, all you need to set up an instance is your office map or office floorplan or blueprints stored as an image file. This is the first public release. Solu Project Homepage: http://www.heikkitoivonen.net/solu/ Enjoy! -- Heikki Toivonen - http://www.heikkitoivonen.net

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Elisa Media Center 0.5.13 Release
by Florian Boucault 06 Oct '08

06 Oct '08

Dear Elisa users, The Elisa team is happy to announce the release of Elisa Media Center 0.5.13, code-named "Sergeant Colon". A few new features have been implemented during this cycle when the team was focused on fixing more than 20 bugs. Here are the main highlights: - Generic support for favourites (with a first proof-of-concept implementation for the Yes.fm plugin) - Improved usability when browsing folders for additions to the collection - Play files launching Elisa from the command line, this will allow a better desktop integration by enabling Elisa as the default media player A complete list of the new features and bugs fixed by this release is available at: https://bugs.launchpad.net/elisa/+milestone/0.5.13 Installers and sources can be downloaded from http://elisa.fluendo.com/download/ Bug reports and feature requests are welcome at https://bugs.launchpad.net/elisa/+filebug Have a nice evening, The Elisa team

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Python-URL! - weekly Python news and links (Oct 6)
by Gabriel Genellina 06 Oct '08

06 Oct '08

QOTW: ".. as the problem grows in complexity, C++ accumulates too much of its own bloat." - sturlamolden, on Python as a *faster* language than C++ Python 2.6 final has been released: http://groups.google.com/group/comp.lang.python/browse_thread/thread/b440f6… Why the `del` statement canNOT be used with sets (for example, in `del a_set[element]`): http://groups.google.com/group/comp.lang.python/browse_thread/thread/d66b7c… An attempt to translate Javascript code into Python shows the similarities and differences between the two languages: http://groups.google.com/group/comp.lang.python/browse_thread/thread/72ab3a… Tarek Ziadé's *Expert Python Programming* is out. http://www.packtpub.com/expert-python-programming/book Preliminary tests combining a Python-to-Javascript compiler with Chrome's V8 JS engine show better performance than CPython (!): http://groups.google.com/group/comp.lang.python/browse_thread/thread/ff862f… How a form of "partial inheritance" could be implemented: http://groups.google.com/group/comp.lang.python/browse_thread/thread/b5e297… How to "peek" inside a generic iterator (look at the next item without consuming it) http://groups.google.com/group/comp.lang.python/browse_thread/thread/572ad2… How to determine whether a method is actually defined in a class or simply inherited from (the base) object (Python 2.6/3.0): http://groups.google.com/group/comp.lang.python/search?q=3DPython+2.6+3.0+D… Tuple parameter unpacking is gone in 3.0, and some regret it: http://groups.google.com/group/comp.lang.python/browse_thread/thread/24b0c3… Sometimes what looks like "good Python code" (as seen by experienced coders) isn't very beginners-friendly: http://groups.google.com/group/comp.lang.python/browse_thread/thread/f41638… Automatically decorate all methods defined in a class: http://groups.google.com/group/comp.lang.python/browse_thread/thread/c76eea… ======================================================================== 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 enthusiats": http://pythonpapers.org/ The Python Magazine is a technical monthly devoted to Python: http://pythonmagazine.com Readers have recommended the "Planet" sites: http://planetpython.org 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/ The somewhat older Vaults of Parnassus ambitiously collects references to all sorts of Python resources. http://www.vex.net/~x/parnassus/ 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 *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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ANN: M2Crypto 0.19
by Heikki Toivonen 05 Oct '08

05 Oct '08

I am happy to announce the M2Crypto 0.19 release! M2Crypto is the most complete Python wrapper for OpenSSL featuring RSA, DSA, DH, HMACs, message digests, symmetric ciphers (including AES); SSL functionality to implement clients and servers; HTTPS extensions to Python's httplib, urllib, and xmlrpclib; unforgeable HMAC'ing AuthCookies for web session management; FTP/TLS client and server; S/MIME; ZServerSSL: A HTTPS server for Zope and ZSmime: An S/MIME messenger for Zope. M2Crypto can also be used to provide SSL for Twisted. Note: Python 2.6 shipped with optional timeout parameters to many network modules; there is no support for these in M2Crypto 0.19. Otherwise 2.6 is supported. Changes: - OpenSSL OBJ_* functions wrapped by Pavel Shramov - OpenSSL ENGINE interface wrapped, providing support for smart cards, by Martin Paljak and Pavel Shramov - EVP.PKey.get_rsa() now returns RSA_pub, which fixes segmentation fault when trying to encrypt using public key from X509 certificate, by Ben Timby - httpslib.ProxyHTTPSConnection now sends the required Host header, by Karl Grindley - Use the proxied User-Agent value in CONNECT requests, by James Antill and Miloslav Trmac - Fixed m2urllib.build_opener when optional handlers were in use, affected Python 2.5 and later, by Miloslav Trmac - Reverted the incorrect GIL change done in 0.18 to m2.passphrase_callback, which caused a deadlock when called from mod_python for example. Thanks to Michal Kochel and Keith Jackson. - SSL.Connection.accept() passed wrong certificate to postConnectionCheck callback - httpslib.HTTPSConnection now raises ValueError for illegal keyword argument - m2.pkey_write_pem[_no_cipher] changed to use the recommended (more secure) PEM_write_bio_PKCS8PrivateKey (used by PEM_write_bio_PrivateKey). - X509.load_cert, load_cert_bio, load_cert_der_string, new_stack_from_der, load_request and load_crl now raise X509Error for invalid data. Previously some of these raised a string as an error, some did not raise but caused strange errors later, for example x509.verify() would return -1. - Fixed SSL.Connection.get_socket_read_timeout and set_socket_read_timeout on 64bit platforms by adding SSL.timeout.struct_size() and using it instead of hardcoded size for socket.getsockopt - X509_Store.load_info now returns the value from the underlying m2.x509_store_load_locations call, and in case of error raises X509Error - Fixed SMIME.verify to raise the correct PKCS7_Error (used to raise SMIME_Error) when verification fails with Python 2.6 Requirements: * Python 2.3 or newer o m2urllib2 requires Python 2.4 or newer * OpenSSL 0.9.7 or newer o Some optional new features will require OpenSSL 0.9.8 or newer * SWIG 1.3.24 or newer required for building o SWIG 1.3.30 or newer may be required with Python 2.5 or newer and Python 2.4 with Py_ssize_t patches Download link available from the M2Crypto homepage: http://chandlerproject.org/Projects/MeTooCrypto Or use easy_install (may not work on all systems): easy_install M2Crypto -- Heikki Toivonen - http://www.heikkitoivonen.net

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ANN: Albow 2.0
by greg 05 Oct '08

05 Oct '08

ALBOW - A Little Bit of Widgetry for PyGame Version 2.0 is now available. This version incorporates substantial additions and improvements. New widgets include TabPanel, TableView, CheckBox, RadioButton and an enhanced set of TextField-based controls. http://www.cosc.canterbury.ac.nz/greg.ewing/python/Albow/ What is Albow? Albow is a library for creating GUIs using PyGame that I have been developing over the course of several PyWeek competitions. I am documenting and releasing it as a separate package so that others may benefit from it, and so that it will be permissible for use in future PyGame entries. The download includes HTML documentation and an example program demonstrating most of the library's features. You can also see some screenshots and browse the documentation on-line.

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[ANN] PyYAML-3.06: YAML parser and emitter for Python
by Kirill Simonov 03 Oct '08

03 Oct '08

======================== Announcing PyYAML-3.06 ======================== A new bug fix release of PyYAML is now available: http://pyyaml.org/wiki/PyYAML Changes ======= * setup.py checks whether LibYAML is installed and if so, builds and installs LibYAML bindings. To force or disable installation of LibYAML bindings, use '--with-libyaml' or '--without-libyaml' options respectively. * Building LibYAML bindings no longer requires Pyrex installed. * 'yaml.load()' raises an exception if the input stream contains more than one YAML document. * Fixed exceptions produced by LibYAML bindings. * Fixed a dot '.' character being recognized as !!float. * Fixed Python 2.3 compatibility issue in constructing !!timestamp values. * Windows binary packages are built against the LibYAML stable branch. * Added attributes 'yaml.__version__' and 'yaml.__with_libyaml__'. Resources ========= PyYAML homepage: http://pyyaml.org/wiki/PyYAML PyYAML documentation: http://pyyaml.org/wiki/PyYAMLDocumentation TAR.GZ package: http://pyyaml.org/download/pyyaml/PyYAML-3.06.tar.gz ZIP package: http://pyyaml.org/download/pyyaml/PyYAML-3.06.zip Windows installer: http://pyyaml.org/download/pyyaml/PyYAML-3.06.win32-py2.3.exe http://pyyaml.org/download/pyyaml/PyYAML-3.06.win32-py2.4.exe http://pyyaml.org/download/pyyaml/PyYAML-3.06.win32-py2.5.exe http://pyyaml.org/download/pyyaml/PyYAML-3.06.win32-py2.6.exe PyYAML SVN repository: http://svn.pyyaml.org/pyyaml Submit a bug report: http://pyyaml.org/newticket?component=pyyaml YAML homepage: http://yaml.org/ YAML-core mailing list: http://lists.sourceforge.net/lists/listinfo/yaml-core About PyYAML ============ YAML is a data serialization format designed for human readability and interaction with scripting languages. PyYAML is a YAML parser and emitter for Python. PyYAML features a complete YAML 1.1 parser, Unicode support, pickle support, capable extension API, and sensible error messages. PyYAML supports standard YAML tags and provides Python-specific tags that allow to represent an arbitrary Python object. PyYAML is applicable for a broad range of tasks from complex configuration files to object serialization and persistance. Example ======= >>> import yaml >>> yaml.load(""" ... name: PyYAML ... description: YAML parser and emitter for Python ... homepage: http://pyyaml.org/wiki/PyYAML ... keywords: [YAML, serialization, configuration, persistance, pickle] ... """) {'keywords': ['YAML', 'serialization', 'configuration', 'persistance', 'pickle'], 'homepage': 'http://pyyaml.org/wiki/PyYAML', 'description': 'YAML parser and emitter for Python', 'name': 'PyYAML'} >>> print yaml.dump(_) name: PyYAML homepage: http://pyyaml.org/wiki/PyYAML description: YAML parser and emitter for Python keywords: [YAML, serialization, configuration, persistance, pickle] Copyright ========= The PyYAML module is written by Kirill Simonov <xi(a)resolvent.net>. PyYAML is released under the MIT license.

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ANN: Veusz 1.1
by Jeremy Sanders 03 Oct '08

03 Oct '08

Veusz 1.1 --------- Velvet Ember Under Sky Zenith ----------------------------- http://home.gna.org/veusz/ Veusz is Copyright (C) 2003-2008 Jeremy Sanders <jeremy(a)jeremysanders.net> Licenced under the GPL (version 2 or greater). Veusz is a scientific plotting package 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 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. Feature changes from 1.0: * Axes autoscale when plotting functions * Labels can be dragged around on plots * More marker symbols * SVG export of plots * The point plotting and axis range code has been rewritten. * Includes quite a few minor bugfixes Features of package: * X-Y plots (with errorbars) * Line and function plots * Contour plots * Images (with colour mappings and colorbars) * Stepped plots (for histograms) * Fitting functions to data * Stacked plots and arrays of plots * Plot keys * Plot labels * LaTeX-like formatting for text * EPS/PDF/PNG export * Scripting interface * Dataset creation/manipulation * Embed Veusz within other programs * Text, CSV and FITS importing Requirements: Python (2.3 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/ 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 For documentation on using Veusz, see the "Documents" directory. The manual is in pdf, html and text format (generated from docbook). Issues: * Can be very slow to plot large datasets if antialiasing is enabled. Right click on graph and disable antialias to speed up output. * The embedding interface appears to crash on exiting. 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. Jeremy Sanders

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Pydev 1.3.22 Released
by Fabio Zadrozny 02 Oct '08

02 Oct '08

Hi All, Pydev and Pydev Extensions 1.3.22 have been released 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: Option to analyze only active editor * Code-analysis: works on case where imported module has same name of builtin. Release Highlights in Pydev: ---------------------------------------------- * Debugger: Pythonpath is the same in debug and regular modes (sys.path[0] is the same directory as the file run) * Debugger: Choices for paths not found are persisted * Code-completion: If __all__ is defined with runtime elements (and not only in a single assign statement), it's ignored for code-completion purposes * Code-completion: Works on case where imported module has same name of builtin * Editor: Cursor settings no longer overridden * Interpreter config: "email" automatically added to the "forced builtins" * Parser: Correctly recognizing absolute import with 3 or more levels * Syntax check: Option analyze only active editor * getpass.getpass: No longer halts when run from pydev (but will show the password being written) * Remove error markers: Context menu in folders to remove error markers created 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 ESSS - Engineering Simulation and Scientific Software http://www.esss.com.br 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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