Mailman 3 December 2010 - Python-announce-list

pyexiv2 0.3.0 released
by Olivier Tilloy 31 Dec '10

31 Dec '10

Hello Python users and developers, I'm pleased to announce that pyexiv2 0.3.0 [1], codename "A Good Year", was released today. 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 series remains fully backward compatible with its predecessor, the 0.2 series, which should ease the transition away from the antiquated 0.1 series. The highlights of this release are: - Compiles and tested (on linux and windows) against libexiv2 0.19, 0.20, 0.21 - ImageMetadata implements the collections.MutableMapping interface - Consistent API across all types of tags to access the value(s) - Read/write access to the EXIF thumbnail - Decode and encode EXIF comments according to the specified charset - API to (un)register custom XMP namespaces - API to get, set and delete the (optional) IPTC charset - Added pickling support to tags - Use fractions.Fraction when available in the standard library (Python ≥ 2.6) Feedback, suggestions and bug reports are welcome at https://launchpad.net/pyexiv2. Cheers, Olivier [1] https://launchpad.net/pyexiv2/0.3.x/0.3 [2] http://exiv2.org

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[ANN] python-gtkmvc 1.99.1
by Roberto Cavada 30 Dec '10

30 Dec '10

We are proud to announce that version 1.99.1 of pygtkmvc has been released. Project homepage: <http://apps.sourceforge.net/trac/pygtkmvc/wiki> Download: <http://sourceforge.net/projects/pygtkmvc/> ============== About pygtkmvc ============== pygtkmvc is a fully Python-based implementation of the Model-View-Controller (MVC) and Observer patterns for the PyGTK2 toolkit. MVC is a pattern that can be successfully used to design and develop well structured GUI applications. The MVC pattern basically helps in separating semantics and data of the application, from their representation. The Observer pattern helps to weaken dependencies among parts that should be separated, but need to be connected each other. pygtkmvc provides a powerful and still simple infrastructure to help designing and implement GUI applications based on the MVC and Observer patterns. The framework has been designed to be: * Essential and small, it does only what it was designed for. * Not an external dependency for your application: it fits in 200KB and can be released along with it. * Easy to understand and to use; fully documented. * Portable: straightly runs under many platforms. License: LGPL ********************************************************************** * Dec 30 2010 * ********************************************************************** Released version 1.99.1 This is a release that keeps compatibility with previous version 1.99.0. However, some features provided in 1.99.0 are deprecated in 1.99.1. This version goes in the direction of stabilizing the API and making the code more robust. Many bugs were fixed, and a new, clean API is now provided for defining notification methods in observers, and logical observable properties in models. The documentation has been updated and extended to reflect all changes, and a complete Library Reference is now available. Furthermore, the documentation now uses Sphinx instead of Latex to generate both pdf and html documentation formats. Last but not the least, the team grew up! * New - Models now feature Logical Observable Properties, along with already supported Concrete Observable Properties. - In Observers notification methods have all the same prototype, which make much cleaner the application code. - New mechanism to declare both dynamically and statically notification methods in Observers. - Auto-adapt of FileChooserButton, ComboBox and Adjustment - API to extend default adapter list - More widget types now correctly cast when adapted to unicode/int/float properties. - Enable RoUserClassAdapter to update the widget. It used to only do it when connecting, not on property changes. This makes the built-in support for gtk.Calendar work in both directions. - Controller's method adapt() allows auto-adaption even if the view does not have corresponding widgets for *all* properties in the model. - Adapters can optionally call prop_write *instead of* casting the value from the widget to the type of the old property value. This was the intended behaviour all along. Default is still to call it after the cast. - Decorators for property setters/getters in models. The methods can now have arbitrary names and you are no longer limited to one property per method. * Changed - Name-based notification methods like `property_<name>_value_change` are still supported, but their usage is now discouraged. A new mechanism for declaring notifications is now available, and you should consider porting applications accordingly. - Decorator Observer.observes is now deprecated. A new mechanism for declaring notifications is now available, and you should consider porting applications accordingly. - Support GtkBuilder in addition to libglade, which is no longer required. This changed the signature of the View constructor. The two formats are not equivalent, as GTK cannot build only parts of a file. - Allow creation of adapters that act on spurious notifications. - Use less eval(codestring) This changed how adapters create observer functions. If you have adapter subclasses you will have to adjust them. - Misuse of the framework that used to exit your application can now be caught as exceptions. - Fewer warnings printed by the framework. Remember to increase the logging level during development. * Fixed - Assigning a tuple with length 3 to a property no longer raises - Pass the correct model when emitting notifications for an inherited signal. This changes how all property wrappers track their owners, but your code should not be affected. - Wrapped sequences lacked crucial special methods like len and iter. - Inspecting wrappers no longer omits the class name. - Various changes to make SQLObjectModel actually usable. - Wrapping more than one sequence class could cause the wrong methods to be called on all but the last instance created. This did not affect programs that only use the built-in list type. - Mutable instances that used to be assigned to properties would notify of their changes even after being replaced in the model. - No more errors from static container adapters you didn't create. - Multiple concurrent iterators on views no longer steal each other widgets. Many thanks to Christian Spoer for narrowing down a bug and to Tobias Weber for joining the team. -- Roberto Cavada <P><A HREF="http://pygtkmvc.sourceforge.net">pygtkmvc 1.99.1</A> - Pygtk MVC is a thin, multiplatform framework that helps to design and develop GUI applications based on the PyGTK toolkit. (30-Dec-10)

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[ANNOUNCE] python-gtkmvc 1.99.1
by Roberto Cavada 30 Dec '10

30 Dec '10

We are proud to announce that version 1.99.1 of pygtkmvc has been released. Project homepage: <http://apps.sourceforge.net/trac/pygtkmvc/wiki> Download: <http://sourceforge.net/projects/pygtkmvc/> ============== About pygtkmvc ============== pygtkmvc is a fully Python-based implementation of the Model-View-Controller (MVC) and Observer patterns for the PyGTK2 toolkit. MVC is a pattern that can be successfully used to design and develop well structured GUI applications. The MVC pattern basically helps in separating semantics and data of the application, from their representation. The Observer pattern helps to weaken dependencies among parts that should be separated, but need to be connected each other. pygtkmvc provides a powerful and still simple infrastructure to help designing and implement GUI applications based on the MVC and Observer patterns. The framework has been designed to be: * Essential and small, it does only what it was designed for. * Not an external dependency for your application: it fits in 200KB and can be released along with it. * Easy to understand and to use; fully documented. * Portable: straightly runs under many platforms. License: LGPL ********************************************************************** * Dec 30 2010 * ********************************************************************** Released version 1.99.1 This is a release that keeps compatibility with previous version 1.99.0. However, some features provided in 1.99.0 are deprecated in 1.99.1. This version goes in the direction of stabilizing the API and making the code more robust. Many bugs were fixed, and a new, clean API is now provided for defining notification methods in observers, and logical observable properties in models. The documentation has been updated and extended to reflect all changes, and a complete Library Reference is now available. Furthermore, the documentation now uses Sphinx instead of Latex to generate both pdf and html documentation formats. Last but not the least, the team grew up! * New - Models now feature Logical Observable Properties, along with already supported Concrete Observable Properties. - In Observers notification methods have all the same prototype, which make much cleaner the application code. - New mechanism to declare both dynamically and statically notification methods in Observers. - Auto-adapt of FileChooserButton, ComboBox and Adjustment - API to extend default adapter list - More widget types now correctly cast when adapted to unicode/int/float properties. - Enable RoUserClassAdapter to update the widget. It used to only do it when connecting, not on property changes. This makes the built-in support for gtk.Calendar work in both directions. - Controller's method adapt() allows auto-adaption even if the view does not have corresponding widgets for *all* properties in the model. - Adapters can optionally call prop_write *instead of* casting the value from the widget to the type of the old property value. This was the intended behaviour all along. Default is still to call it after the cast. - Decorators for property setters/getters in models. The methods can now have arbitrary names and you are no longer limited to one property per method. * Changed - Name-based notification methods like `property_<name>_value_change` are still supported, but their usage is now discouraged. A new mechanism for declaring notifications is now available, and you should consider porting applications accordingly. - Decorator Observer.observes is now deprecated. A new mechanism for declaring notifications is now available, and you should consider porting applications accordingly. - Support GtkBuilder in addition to libglade, which is no longer required. This changed the signature of the View constructor. The two formats are not equivalent, as GTK cannot build only parts of a file. - Allow creation of adapters that act on spurious notifications. - Use less eval(codestring) This changed how adapters create observer functions. If you have adapter subclasses you will have to adjust them. - Misuse of the framework that used to exit your application can now be caught as exceptions. - Fewer warnings printed by the framework. Remember to increase the logging level during development. * Fixed - Assigning a tuple with length 3 to a property no longer raises - Pass the correct model when emitting notifications for an inherited signal. This changes how all property wrappers track their owners, but your code should not be affected. - Wrapped sequences lacked crucial special methods like len and iter. - Inspecting wrappers no longer omits the class name. - Various changes to make SQLObjectModel actually usable. - Wrapping more than one sequence class could cause the wrong methods to be called on all but the last instance created. This did not affect programs that only use the built-in list type. - Mutable instances that used to be assigned to properties would notify of their changes even after being replaced in the model. - No more errors from static container adapters you didn't create. - Multiple concurrent iterators on views no longer steal each other widgets. Many thanks to Christian Spoer for narrowing down a bug and to Tobias Weber for joining the team. -- Roberto Cavada <P><A HREF="http://pygtkmvc.sourceforge.net">pygtkmvc 1.99.1</A> - Pygtk MVC is a thin, multiplatform framework that helps to design and develop GUI applications based on the PyGTK toolkit. (30-Dec-10)

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ANN: Coding class v0.001
by K. Richard Pixley 29 Dec '10

29 Dec '10

Announcing the first release of my Coding class. This is a simple utility class that answers the question of how to implement enums in python. I know there have been many other answers as well, many of them quite fine, but this is the answer that I've been wanting so I'm sharing it. Coding-0.001 should be considered alpha stability. I've written it, it's pretty simple, and it has test cases, and it's now ready for others to kick it about. Features: * Supports at least python 2.6, 2.7, and 3.1. * MIT License (Open source) Doc: http://packages.python.org/coding PyPi: http://pypi.python.org/pypi/coding/0.001 --rich

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Tiny4py, a little python wrapper to make shorten urls and QRCodes
by Andrea Stagi 29 Dec '10

29 Dec '10

Hi, I would announce you my new python wrapper to make shorten urls and QRCodes, using main used services: goo.gl, bit.ly and tinyurl. Please, visit http://code.google.com/p/tiny4py/ Bests

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ANN: MyNewspaper v3.0
by Iñigo Serna 29 Dec '10

29 Dec '10

Hi there, I'm really pleased to announce a new release of MyNewspaper, a web-based personal RSS aggregator and feeds reader. Although no public releases in last years, I've been improving MyNewspaper continually for my personal use, but I think it's the time to publish it again. Some technical points of interest: - backend based on CherryPy web framework, FeedParser, SQLObject, SQLite - frontend with javascript (jQuery, jQueryUI, jQuery-mobile) More information, complete requirements and download link at: [main] https://inigo.katxi.org/devel/mynewspaper/ [mirror] http://www.terra.es/personal7/inigoserna/mynewspaper/ Of course, all comments, suggestions etc. are welcome. Best regards, Iñigo Serna

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ANN: Kamaelia 1.0.12.0 Released
by Michael Sparks 28 Dec '10

28 Dec '10

Hi, I'm happy to announce Kamaelia's 4th release of 2010: 1.0.12.0 (Y.Y.M.r) Kamaelia is a component system based around unix-like concurrency/composition & pipelining. There's a strong focus on networked multimedia systems. Kamaelia's license changed earlier this year to the Apache 2.0 License. The release is divided up as follows: * Axon - the core component framework. Provides safe and secure message based concurrency & composition using generators as limited co-routines, threads, experimental process based support, and (simplified) software transactional memory. Includes examples. * Kamaelia - A large Ol' Bucket of components, both application specific and generic. Components vary from network systems, through digital tv, graphics, visualisation, data processing etc. These reflect the work and systems that Kamaelia has been used to build. Includes examples. * Apps - A collection of applications built using Kamaelia. Whilst Kamaelia includes a collection of examples, these are either releases of internal apps or exemplars created by contributors. * Bindings - a collection of bindings we maintain as part of Kamaelia, including things like DVB bindings. (Bindings recently changed over to using Cython to make life simpler) Website: http://www.kamaelia.org/Home.html Source: http://code.google.com/p/kamaelia Tutorial: http://www.kamaelia.org/PragmaticConcurrency.html Detail of changes: http://groups.google.com/group/kamaelia/browse_frm/thread/db45646ce1790233 Download: http://www.kamaelia.org/release/MonthlyReleases/Kamaelia-1.0.12.0.tar.gz Overview of Changes in this release: * This rolls up (primarily) 3 application and examples branches. The core functionality for these, as ever, is in the main Kamaelia.Apps namespace, meaning these applications and examples are designed for inclusion or extraction into other applications relatively easily. As a result they act as exemplars for things like 3D visualisation, video and audio communications, twitter mining, database interaction and analysis and django integration. They're also useful (and used) as standalone apps in their own right. * Examples (and application components) added for using the 3D graph visualisation (PyOpenGL based) - one based on visualising collaborations, another based on viewed FOAF networks. * Whiteboard application extended such that: * It supports multiway video comms as well as multiway audio comms. * Adds support for "decks" (collections of slides which can be downloaded, saved, loaded, emailed, encrypted, etc) * Removes pymedia dependency * Change audio over to us PyAlsaAudio directly. * Adds support for calibrated touch screen displays to Pygame Display. - For example large digital whiteboards in addition to existing tablets etc. * Adds in a "Social Bookmarking system" that does the following: * Harvests a semantic web/RDF data store for realtime search terms (relating to live television broadcast) * Uses these search terms to search twitter, to identify conversations around the semantic web data. * Takes the resulting tweets, and stores them in a DB * Analyses the tweets (including fixing language for analysis using NLTK) for a variety of aspects, storing these in the DB * Presents the results (graphs of buzz/popularity around the content) * Additionally the system attempts to identify particularly interesting/notable moments based on audience conversations, and provides links back to the actual broadcast programmes. * Additionally provides an API for data, generates word clouds etc. * Front end uses Django and web graph APIs to presnet data. Mailing list: http://groups.google.com/group/kamaelia Have fun :-) Michael Sparks -- http://twitter.com/kamaelian http://yeoldeclue.com/blog

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[ANNOUNCE] MyHDL 0.7
by Jan Decaluwe 28 Dec '10

28 Dec '10

I'm happy to announce MyHDL 0.7. MyHDL is Python used as a Hardware Description Language. Overview: http://www.myhdl.org/doku.php/overview What's new in this release: http://www.myhdl.org/doc/0.7/whatsnew/0.7.html Download: http://sourceforge.net/project/showfiles.php?group_id=91207 Best regards, Jan Decaluwe -- Jan Decaluwe - Resources bvba - http://www.jandecaluwe.com Python as a HDL: http://www.myhdl.org VHDL development, the modern way: http://www.sigasi.com Analog design automation: http://www.mephisto-da.com World-class digital design: http://www.easics.com

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ANN : PySWITCH Release – 0.1alpha
by Godson Gera 27 Dec '10

27 Dec '10

Hi All, I am glad to announce the first alpha release of PySWITCH. http://pyswitch.sf.net The idea of PySWITCH is to offer a complete library to Python and Twisted programmers for interacting with FreeSWITCH using EventSocket interface. The target is to cover all FreeSWITCH API commands and Dialplan tools. PySWITCH handles all the low level details in executing FreeSWITCH commands, so the programmer can easily concentrate on quickly building FreeSWITCH applications. As an example, the API functions offered by PySWITCH often executes many FreeSWITCH commands under the hood and finally returns the desired result. Suppose you execute a background job, PySWITCH API will automatically wait and catch the backgroundjob event parse the result and will fire the deferred. The current release covers good amount of API commands and a few Dialplan tools. The protocol communication issues are ironed out. It has a nice event call back interface. I’ll present its usage in couple of tutorials soon. -- Thanks & Regards, Godson Gera http://godson.in

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Pogo 0.3.1
by Jendrik Seipp 26 Dec '10

26 Dec '10

I am proud to announce the release of Pogo 0.3.1, probably the simplest and fastest audio player for Linux. You can get the tarball and an Ubuntu deb package at http://launchpad.net/pogo What is Pogo? -------------------- Pogo plays your music. Nothing else. It tries to be fast and easy-to-use. Pogo's elementary-inspired design uses the screen-space very efficiently. It is especially well-suited for people who organize their music by albums on the harddrive. The main interface components are a directory tree and a playlist that groups albums in an innovative way. Pogo is a fork of Decibel Audio Player. Supported file formats include Ogg Vorbis, MP3, FLAC, Musepack, Wavpack, and MPEG-4 AAC. Pogo is written in Python and uses GTK+ and gstreamer. What's new in 0.3.1 "You are a radar detector" (2010-12-26) ============================================== * When a track is added from nautilus etc. start playback if not already playing * Show info messages when no music directories have been added * Stop old search when user clears search field or enters new search phrase * Add search shortcut (Ctrl-F) * Do not allow adding root or home directory to music directories * Translations updated Cheers, Jendrik

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