Mailman 3 February 2010 - Python-announce-list

DreamPie - The Python shell you've always dreamed about!
by Noam Yorav-Raphael Feb. 21, 2010

Feb. 21, 2010

I'm pleased to announce DreamPie 1.0 - a new graphical interactive Python shell! Some highlights: * Has whatever you would expect from a graphical Python shell - attribute completion, tooltips which show how to call functions, highlighting of matching parentheses, etc. * Fixes a lot of IDLE nuisances - in DreamPie interrupt always works, history recall and completion works as expected, etc. * Results are saved in the Result History. * Long output is automatically folded so you can focus on what's important. * Jython and IronPython support makes DreamPie a great tool for exploring Java and .NET classes. * You can copy any amount of code and immediately execute it, and you can also copy code you typed interactively into a new file, with the Copy Code Only command. No tabs are used! * Free software licensed under GPL version 3. Check it out at http://dreampie.sourceforge.net/ and tell me what you think! Have fun, Noam

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ANN: PiCloud cloud library 1.8 release
by Ken Elkabany Feb. 19, 2010

Feb. 19, 2010

PiCloud, a cloud-computing platform for the Python Programming Language, has released version 1.8 of its client library, cloud. PiCloud enables Python users to leverage the power of an on-demand, high performance, and auto scaling compute cluster with as few as three lines of code! No server management necessary. You can find out more here: http://www.picloud.com What's New: * The client library is now open source with an LGPL license. * Users can choose to run their code across 2.5ghz nodes or 1ghz nodes with a simple kwarg. * Users can now select to run their code in real-time, guaranteeing that their processes start in under a second. * Drop-in replacement for multiprocessing. * Improved cluster workload distribution performance by 20%. * Improved efficiency of Python interpreter state extraction by the client library. * Optimized for all Python packages in the Enthought Python Distribution. * Bug fixes. * And much more! Full service description: PiCloud is a cloud-computing platform that integrates into the Python Programming Language. It enables you to leverage the compute power of Amazon Web Services without having to manage, maintain, or configure virtual servers. PiCloud integrates seamlessly into your existing code base through a custom Python library, cloud. To offload the execution of a function to the cloud, all you must do is pass your desired function into the cloud library. PiCloud will then run the function on its high-performance and automatically-scaling cluster. We quickly scale our server capacity to meet your computational needs, and only charge you for the resources you actually consume. Getting on the cloud has never been this easy! PiCloud improves the full cycle of software development and deployment. Functions that are run on PiCloud have their resource usage monitored, performance analyzed, and errors traced; we further aggregate all your functions to give you a bird's eye view of your service. Through these introspective capabilities, PiCloud enables you to develop faster, easier, and smarter. Common use cases for our platform: * Crawling the web * Manipulating images and videos * Generating charts and graphs * Statistical analysis of data sets * Real-time data processing Cheers, Ken Elkabany PiCloud, Inc.

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BetterBatch 0.9.4 released - Added For loops and Parallel sections
by mark.m.mcmahon＠gmail.com Feb. 18, 2010

Feb. 18, 2010

From: mark.m.mcmahon(a)gmail.com To: python-announce(a)python.org Hi, The 0.9.4 release of BetterBatch is now available. BetterBatch is designed as a middle ground between batch files and more powerful languages (Python, shell scripting, etc). The project is hosted on code.google.com: http://code.google.com/p/betterbatch/ Download from http://code.google.com/p/betterbatch/downloads/list Here is the list of changes from the last release: 0.9.4 Added For loops and Parallel sections ------------------------------------------------------------------ 17-February-2010 * Added support for basic For loops (though needs improvement) * Added support for running steps in Parallel. * Documentation updates * Added support for python 2.5 (stop using shlex.split with posix argument, use Thread.isAlive() rather than Thread.is_alive() ). If you want to check at the home page. If you find an bug or have a suggestions then please log an issue at http://code.google.com/p/betterbatch/issues/entry Thanks Mark <P><A HREF="http://code.google.com/p/betterbatch/">BetterBatch 0.9.4</A> Powerful, safe and simple batch language. (18-Feb-2010)

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Draft paper submission deadline is extended: SETP-10, Orlando, USA
by James Heralds Feb. 18, 2010

Feb. 18, 2010

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. Draft paper submission deadline is extended: SETP-10, Orlando, USA 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.

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ANN - RockSolidTools' RSFile Advanced Streams v1.0a1
by Pascal Chambon Feb. 17, 2010

Feb. 17, 2010

Hello everyone, I'm presently pleased to announce the first release of the "rsfile" package, in its alpha1 stage. Whatszepoint ? will you ask. Libraries to access files, we already have quite a bunch of them, without counting the new io modules of the stdlib! And that's precisely where rsfile fits: it's a partial reimplementation of the io module, as backward compatible as possible, and which offers a set of new - and possibly very useful - features. Ever dreamed of cross-platform, reliable and easy file locking, disk synchronization, stream inheritance management, size() and uid() getters, O_SYNC or (O_CREAT|O_EXCL) semantics ? Thanks to thin wrappers to native APIs, rsfile might spare you a some headaches, as it offers such things in an object-oriented and portable fashion, with the backup of a rather comprehensive test suite (which currently passes on win32/linux/freebsd - I'm still building more virtual machines to track platform-specific gotchas). Power users might be afraid by the fact that rsfile is currently a pure-python package, far slower than the latest C implementation of the io module. But patience, focus is currently set on semantic and robustness, cython extensions and other optimizations will come later on. B-) Since the primary goal of this alpha is to finalize the API, you're highly invited to browse the doc below, and to send feedback on method names, advanced mode flags, wished functionalities etc. http://bytebucket.org/pchambon/python-rock-solid-tools/wiki/index.html For those eager to play with new streams (and why not, run the test suite on their exotic OS and send me potential error outputs), here is the repository: http://bitbucket.org/pchambon/python-rock-solid-tools/downloads/ Enjoy, regards, Pascal (aka pythoniks) PS : for those who have already encountered the ugly flaws of fcntl() locks, I must precise that rsfile solves them almost entirely, at least if you make it your default file access gateway.

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Nagare web framework 0.3.0 released
by Alain Poirier Feb. 16, 2010

Feb. 16, 2010

Hi all, The version 0.3.0 of the Nagare web framework is now released ! To read about its features: http://www.nagare.org/trac/wiki/NagareFeatures Release info and download page: http://pypi.python.org/pypi/nagare Release info and download page of the examples: http://pypi.python.org/pypi/nagare.examples Source and documentation available at the website: http://www.nagare.org Mailing lists - the place to ask questions: http://groups.google.com/group/nagare-users About Nagare ============ Nagare is a components based framework: a Nagare application is a composition of interacting components each one with its own state and workflow kept on the server. Each component can have one or several views that are composed to generate the final web page. This enables the developers to reuse or write highly reusable components easily and quickly. Thanks to Stackless Python, Nagare is also a continuation-based web framework which enables to code a web application like a desktop application, with no need to split its control flow in a multitude of controllers and with the automatic handling of the back, fork and refresh actions from the browser. Its component model and use of the continuation come from the famous Seaside Smalltalk framework. Furthermore Nagare integrates the best tools and standard from the Python world. For example: - WSGI: binds the application to several possible publishers, - lxml: generates the DOM trees and brings to Nagare the full set of XML features (XSL, XPath, Schemas ...), - setuptools: installs, deploys and extends the Nagare framework and the Nagare applications too, - PEAK Rules: generic methods are heavily used in Nagare, to associate views to components, to define security rules, to translate Python code to Javascript ... - WebOb: for its Request and Response Objects. Examples ======== A complete "guess a number" game to taste how easy web coding becomes using continuations: import random from nagare import component, util class Number(component.Task): """A little game to guess a number """ def go(self, comp): """The game algorithm, using continuation for a pure linear Python code In: - ``comp`` -- this component """ self.attempt = 1 number = random.randint(1, 20) comp.call(util.Confirm('I choose a number between 1 and 20. Try to guess it')) while True: x = comp.call(util.Ask('Try #%d: ' % self.attempt)) if not x.isdigit(): continue x = int(x) if x > number: comp.call(util.Confirm('Choose a lower number')) if x < number: comp.call(util.Confirm('Choose a greater number')) if x == number: comp.call(util.Confirm('You guessed the number in %d attempts' % self.attempt)) break self.attempt += 1 A simple todo list, illustrating the programmatic HTML generation, the association of view(s) to Python objects and the direct association of callbacks to HTML form elements and links: from nagare import presentation from nagare.namespaces import xhtml # A plain Python ``TodoList`` class class TodoList(object): def __init__(self): self.todo = [] def add_todo(self, msg): self.todo.append(msg) # The default HTML view, generated in programmatic HTML @presentation.render_for(TodoList) def render(self, h, comp, model): # ``h`` is a (X)HTML renderer (http://www.nagare.org/trac/wiki/RendererObjects) with h.div: for msg in self.todo: h << h.blockquote(msg) << h.hr with h.form: h << 'New todo:' << h.br h << h.textarea.action(self.add_todo) << h.br h << h.input(type='submit', value='Add') return h.root 0.3.0 Changelog =============== New features ------------ - refactoring of the sessions managers: - session objects now keep track of their sessions manager - no more sessions manager factories - configurable pickler / unpickler objects - configuration switch ``states_history`` to set if an objects graphs history must be kept - new sessions manager (``type=memory``) that keeps the objects graphs in memory, without any pickling - logging service added: - one dedicated logger for each published applications is created - easy configuration and use of this dedicated logger - all the ``[logging]`` sections of all the published applications are merged before to configure the Python logging system - preliminary Comet support added (currently only working in a multi-threaded env.) - last exception raised kept by the ``WSGIApp`` objects and exception hook added - ``with_request`` parameter added to all the callback registrations and ``Update()`` objects - translation of Python modules to Javascript added - configurable name for the security cookie (one of the post Nagare security audit actions) - configuration of the ``WSGIApp`` objects split accross multiples `set_*`` methods - ``get_registered_applications()`` added to the publisher objects - full YUI bundled with Nagare - New versions: - Stackless Python 2.6.4 is now the recommanded Python version - virtualenv updated to 1.4.5 - SQLAlchemy updated to 0.5.8 - Elixir updated to 0.7.1 - Lxml updated to 2.2.4 - YUI updated to 2.8.0r4 Changes ------- - with the YUI connection manager, a large browser response must be reassembled (Firefox only) - late creation of the SQLAlchemy database engines and metadatas binding - input fields ot type ``button`` now working in an Ajax submit - ``Var.var()`` now working inn a unicode context - ``nagare-admin create-rules`` had problems when a static directory didn't exist - bad boolean expressions parenthesis translation in pyjs fixed - parsing (X)HTML from URL now working under Windows Bugs fixed ---------- - #47: ``set_publisher()`` called when using "nagare-admin create-db" - #48: py2js parentheses bug - #49: ``reset`` configuration ignored by the memcached sessions manager - #50: [log] inferred caller is wrong Enjoy! A. Poirier

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ANN: easygconf 0.03
by Florian Diesch Feb. 16, 2010

Feb. 16, 2010

I'm happy to announce easygconf 0.03 Get it at http://www.florian-diesch.de/software/easygconf/ Changes since 0.02: ------------------- * renamed GConfDict.add_listner() to add_listener() * fixed bug in GConfDict.from_python() (thanks to Pawn Hearts <pawn13 at gmail.com>) easygconf provids an easy, pythonic way to access GConf <http://projects.gnome.org/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_listener('test', callback) try: gtk.main() except KeyboardInterrupt: pass gc.unset('test') Florian -- GUIs programmieren mit Python und Glade: <http://www.florian-diesch.de/doc/python-und-glade/>

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moin 1.8.7 released - important security and bug fixes
by Reimar Bauer Feb. 15, 2010

Feb. 15, 2010

MoinMoin 1.8.7 is a security bug fix release. Please update as soon as possible. See http://moinmo.in/MoinMoinDownload for the release archive and the change log. BTW, we still need much more people helping with cleaning up on master19.moinmo.in. So, especially if you speak some non-english language, you can help! See http://moinmo.in/MoinDev/Translation for details.

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ANN: unicode 0.9.4
by garabik-news-2005-05＠kassiopeia.juls.savba.sk Feb. 14, 2010

Feb. 14, 2010

unicode is a simple python command line utility that displays properties for a given unicode character, or searches unicode database for a given name. It was written with Linux in mind, but should work almost everywhere (including MS Windows and MacOSX), UTF-8 console is recommended. The package contains also 'paracode' utility, that exploits the full power of the Unicode standard to convert the text into vіѕuаllу ѕіmіlаr ѕtrеаm οf glурhѕ, whіlе uѕіng сοmрlеtеlу dіffеrеnt сοdерοіntѕ. It is an excellent didactic tool demonstrating the principles and advanced use of the Unicode standard. Changes since previous versions: * works with new (split) Unihan files Author: Radovan Garabík URL: http://kassiopeia.juls.savba.sk/~garabik/software/unicode/ License: GPL -- ----------------------------------------------------------- | Radovan Garabík http://kassiopeia.juls.savba.sk/~garabik/ | | __..--^^^--..__ garabik @ kassiopeia.juls.savba.sk | ----------------------------------------------------------- Antivirus alert: file .signature infected by signature virus. Hi! I'm a signature virus! Copy me into your signature file to help me spread!

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Release of CodeInvestigator 0.22.0
by hans moleman Feb. 12, 2010

Feb. 12, 2010

CodeInvestigator 0.22.0 was released on Feb 13. I have changed the recording process to make it run faster. CodeInvestigator is a tracing tool for Python programs. Running a program through CodeInvestigator creates a recording. Program flow, function calls, variable values and conditions are all stored for every line the program executes. The recording is then viewed with an interface consisting of the code. The code can be clicked: A clicked variable displays its value,a clicked loop displays its iterations. You read code, and have at your disposal all the run time details of that code. A computerized desk check tool and another way to learn about your program. http://sourceforge.net/project/showfiles.php?group_id=183942

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