Mailman 3 February 2007 - Python-announce-list

Flightdeck-UI MVM and Library release 0.3.0
by George Belotsky Feb. 25, 2007

Feb. 25, 2007

The goal of the Flightdeck-UI project is to apply ideas from aircraft instrumentation design to general-purpose user interfaces. Flightdeck-UI release 0.3.0 is a development release of the Multi-Level Monitor (MVM) application and the Tkinter widget library which MVM uses. MVM 0.3.0 adds the "safetymon" and "safetymon-small" control files, which monitor the temperature of the hard drive and CPU. You may need to adjust this file to match your processor, motherboard and preferences. Both the MVM 0.3.0 and Library 0.3.0 packages also synchronize the code that MVM and the Flightdeck-UI Library share with Flightdeck-UI Online versions 0.4.0 and 0.5.0. See the homepage: "http://www.openlight.com/fdui" or download MVM directly (tar.gz and .zip, includes the library): "http://www.openlight.com/fdui/downloads/fdui-mvm-0.3.0.tar.gz" "http://www.openlight.com/fdui/downloads/fdui-mvm-0.3.0.zip" or the library alone (tar.gz and .zip(: "http://www.openlight.com/fdui/downloads/fdui-lib-0.3.0.tar.gz" "http://www.openlight.com/fdui/downloads/fdui-lib-0.3.0.zip" What is Flightdeck-UI --------------------- The goal of the Flightdeck-UI project is to apply ideas from aircraft instrumentation design to general purpose user interfaces. The project has released the following packages. * Flightdeck-UI Online is a Web-based monitoring system/dashboard, which allows you to create multiple control panels to observe a diverse set of variables. You view these control panels entirely through a web browser (requires Flash). * Flightdeck-UI Multi-Variable Monitor(MVM) is a monitoring system/dashboard application that you install locally. It runs under both Windows and Linux. MVM includes a graphical editor (with theme support) for creating monitoring consoles. * Flightdeck-UI Library is a collection of virtual instruments that you can use in your own programs. Both Flightdeck-UI Online and Flightdeck-UI MVM use the library. Flightdeck-UI Online and Flightdeck-UI MVM share the same plugin architecture. The online version, however, is capable of monitoring each plugin at a different sampling rate. Both applications can track multiple heterogeneous data sources (hosts on the Internet, embedded devices, etc.) simultaneously. Plugins can use threads, simple synchronous I/O, or asynchronous I/O; the distributions contain examples of each type. For example, almost any Unix command that you enter manually via the shell can be automatically executed by Flightdeck-UI Online or Flightdeck-UI MVM, and the results displayed by the system's virtual instruments.

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[ANN] buzhug-0.7 (pure-Python database engine)
by Pierre Quentel Feb. 25, 2007

Feb. 25, 2007

Hello, A new version of buzhug has just been published : http://buzhug.sourceforge.net buzhug is a fast, pure-Python database engine, using a syntax that Python programmers should find very intuitive The data is stored and accessed on disk (it is not an in-memory database) ; the implementation has been designed to make all operations, and especially selection, as fast as possible with an interpreted language The database is implemented as a Python iterator, yielding objects whose attributes are the fields defined when the base is created ; therefore, requests can be expressed as list comprehensions or generator expressions, instead of SQL queries : for record in [ r for r in db if r.name == 'pierre' ]: print record.name,record.age instead of cursor.execute("SELECT * IN db WHERE name = 'pierre'") for r in cursor.fetchall(): print r[0],r[1] buzhug supports concurrency control by versioning, cleanup of unused data when many records have been deleted, easy links between bases, adding and removing fields on an existing base, etc Database speed comparisons are not easy to make. I made a limited benchmark using the same use cases as SQLite's author ; it shows that buzhug is much faster than other pure-Python modules (KirbyBase, gadfly) ; SQLite, which is implemented in C, is faster, but only less than 3 times on the average Version 0.7 is a minor update, with Python2.3 compatibility and a new method for updating records Download : http://sourceforge.net/project/showfiles.php?group_id=167078 Documentation : http://buzhug.sourceforge.net/ Tutorial : http://buzhug.sourceforge.net/tutorial.html Users group : http://groups.google.com/group/buzhug?lnk=li Regards, Pierre

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[ANN] argparse 0.6 - Command-line parsing library
by Steven Bethard Feb. 24, 2007

Feb. 24, 2007

Announcing argparse 0.6 ----------------------- argparse home: http://argparse.python-hosting.com/ argparse single module download: http://argparse.python-hosting.com/file/trunk/argparse.py?format=raw argparse bundled downloads at PyPI: http://www.python.org/pypi/argparse/ About this release ================== This release adds support for argument groups, and fixes a bug in the display of required options. Also, the source distribution of this release should now include the tests. Note that the 'outfile' type is still deprecated and will likely be removed in the next release. Please update your code to use the new FileType factory. New in this release =================== * Required options are no longer displayed with brackets (so that they no longer look optional). * The source distribution includes ``test_argparse.py``, argparse's test suite. * Arguments can now be grouped into user-defined sections instead of the default "positional arguments" and "optional arguments" sections:: >>> parser = argparse.ArgumentParser(prog='PROG', add_help=False) >>> xgroup = parser.add_argument_group('xxxx') >>> xgroup.add_argument('-x', help='x help') >>> ygroup = parser.add_argument_group('yyyy') >>> ygroup.add_argument('y', help='y help') >>> parser.print_help() usage: PROG [-x X] y xxxx: -x X x help yyyy: y y help About argparse ============== The argparse module is an optparse-inspired command line parser that improves on optparse by: * handling both optional and positional arguments * supporting parsers that dispatch to sub-parsers * producing more informative usage messages * supporting actions that consume any number of command-line args * allowing types and actions to be specified with simple callables instead of hacking class attributes like STORE_ACTIONS or CHECK_METHODS as well as including a number of other more minor improvements on the optparse API. To whet your appetite, here's a simple program that sums its command-line arguments and writes them to a file:: parser = argparse.ArgumentParser() parser.add_argument('integers', nargs='+', type=int) parser.add_argument('--log', default=sys.stdout, type=argparse.FileType('w')) args = parser.parse_args() args.log.write('%s\n' % sum(args.integers)) args.log.close()

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ANN: The Python Behind PyCon (PyCon-Tech) - 4 ShowMeDo Videos
by Ian Ozsvald Feb. 24, 2007

Feb. 24, 2007

Summary: Doug Napoleone introduces the technology behind PyCon-Tech. These are the first 4 videos in a longer series, Doug shows the technology that is in use behind PyCon as the conference runs over this weekend. http://showmedo.com/videos/series?name=pythonNapleonePyConTechSeries Episodes: PyCon-Tech Introduction - PMWiki, Django, Zope - 13 minutes Django plus PHP - PMWiki, Django - 24 minutes Schedule App Part 1 - iCal, Google Calendar - 26 minutes Schedule App Part 1a - Dojo Javascript - 12 minutes (more episodes to come) About Doug Napoleone: This is Doug's first ShowMeDo series. He will guide you through the technology used behind-the-scenes at PyCon. Please remember to say Thanks using a comment if you like Doug's work. About ShowMeDo.com: Free videos (we call them ShowMeDos) showing you how to do things. The videos are made by us and our users, for everyone. 77 of our 152 videos are for Python, with more to come. We'd love to have more contributions - would you share what you know? The founders, Ian Ozsvald, Kyran Dale http://ShowMeDo.com

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ANN: MailSigger 0.3 Released
by Karsten Schulz Feb. 24, 2007

Feb. 24, 2007

Hi all, I just released MailSigger 0.3. MailSigger is a small Python program which is intended to be installed as a filter on a MTA in your network. Depending on the sender address of an email, a disclaimer file can be attached to the outgoing email. It handles plain text emails as well as MIME emails. MailSigger depends on Python 2.5. Get the program archive and pdf documentation at: <http://www.karstenschulz.name/assets/downloads/mailsigger-0.3.tar.bz2> Read and learn more about MailSigger at: <http://www.karstenschulz.name/assets/en/mailsigger/mailsigger.html> have fun! Karsten

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ANN: CherryPy 3.0.1 Released
by Christian Wyglendowski Feb. 22, 2007

Feb. 22, 2007

Hi, We just released CherryPy 3.0.1. It is mainly a bug-fix release but there are also some performance tweaks and other changes as well. Here are some highlights: * More docstrings. help() is more helpful than ever. * The WSGI server has been moved into its own package to allow for easier use outside of CherryPy. * Session locking can now be "implicit" (before_handler), "early" (before_request_body), or "explicit" (none). * Moved checker back to cherrypy.checker from engine, and also added a new check_config_types method. There's also a new checker config namespace, so you can turn off the checker with "checker.on = False", or turn off specific methods with "checker.check_method_foo = None". Get the 3.0.1 release at: http://cherrypy.org/wiki/CherryPyDownload Christian Wyglendowski CherryPy Team

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The Python Papers Volue 2 Issue 1 now available
by tennessee＠tennessee.id.au Feb. 22, 2007

Feb. 22, 2007

G'day Pythonistas! Welcome to Issue Two of The Python Papers. It has been an exciting time and we are pleased to have reached this milestone. I'd like to say a big hello to all the people who have provided their input in making this a reality: the python-advocacy list, comp.lang.python, the Python User Groups that responded to the call to participate and also many individuals. This is also the first issue where we have attempted to publish both a PDF and an HTML edition. The latest version, and most recent blog posts are available at http://pythonpapers.org/. If you would like to show up on our tracking statistics, please use this path. Direct links also available: PDF available at : http://archive.pythonpapers.org/ThePythonPapersVolume2Issue1.pdf HTML available at : http://archive.pythonpapers.org/ThePythonPapersVolume2Issue1.html Please note the new volume number commences with the calendar year, so the volume number has increased while the issue number is the same as the last issue. The choice of format was clearly an issue for many people on both sides. Going forward, we will continue to use PDF as our primary 'authorative' version for the purposes of page numbering and referencing, however the HTML edition will be made public in a day or two after further editing to cope with conversion effects. Table of Contents: Editorial | Page 1 Python 411 Interview | Page 2 Coding Idioms pt 2 -- Design Patterns | Page 5 Python User Group Highlights | Page 7 Firebird Database Backup by Serialized Database Table Dump | Page 10 Python Events | P15 Cheers, -Tennessee Leeuwenburg (Editor-In-Chief) Posted by Tennessee Leeuwenburg on 2007/02/09

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ANN: IbPy 0.7.0-9.00 - Interactive Brokers Python API
by Troy Melhase Feb. 21, 2007

Feb. 21, 2007

IbPy - Interactive Brokers Python API ===================================== IbPy 0.7.0-9.00 Released 21 Feb 2007 What is IbPy? ------------------------------------------------------------------------------ IbPy is a third-party implementation of the API used for accessing the Interactive Brokers on-line trading system. IbPy implements functionality that the Python programmer can use to connect to IB, request stock ticker data, submit orders for stocks and futures, and more. What's new in this release? ------------------------------------------------------------------------------ IbPy is all new. TWS API version 9.00 is supported. IbPy is now generated by machine translation of the reference Java source code provided by Interactive Brokers. The translation is made possible by the java2python_ package. This version has 100% feature parity with the reference implementation. All API calls are supported, as are all options of each call. An additional interface (similar to the interface provided by earlier IbPy releases) is also included. Because the sources are translated, future versions of the TWS API will be supported in a matter of hours or days (not weeks or worse). Where can I get IbPy? ------------------------------------------------------------------------------ IbPy is available for download from Google Code: http://ibpy.googlecode.com/files/IbPy-0.7.0-9.00.tar.gz Project page: http://code.google.com/p/ibpy/ How do I use IbPy? ------------------------------------------------------------------------------ See the IbPy wiki page "Getting Started with IbPy": http://code.google.com/p/ibpy/wiki/GettingStarted What are the requirements? ------------------------------------------------------------------------------ IbPy requires Python 2.5 or newer. Previous versions are not supported. TWS requires a web browser capable of executing Sun(R) Java(tm) applets. TWS can also be started directly with Sun(R) Java(tm) and the stand-alone package supplied by Interactive Brokers. What is Interactive Brokers? ------------------------------------------------------------------------------ From the page "`About The Interactive Brokers Group`__": Interactive Brokers conducts its broker/dealer and proprietary trading businesses on 60 market centers worldwide. In its broker dealer agency business, IB provides direct access ("on line") trade execution and clearing services to institutional and professional traders for a wide variety of electronically traded products including options, futures, stocks, forex, and bonds worldwide. In its proprietary trading business IB engages in market making for its own account in about 6,500 different electronically traded products. Interactive Brokers Group and its affiliates now trade 19% of the worldâs exchange traded equity options*, and executes approximately 500,000 trades per day. What is Python? ------------------------------------------------------------------------------ From the page "`What is Python?`__": Python is an interpreted, interactive, object-oriented programming language. It is often compared to Tcl, Perl, Scheme or Java. Python combines remarkable power with very clear syntax. It has modules, classes, exceptions, very high level dynamic data types, and dynamic typing. There are interfaces to many system calls and libraries, as well as to various windowing systems (X11, Motif, Tk, Mac, MFC). New built-in modules are easily written in C or C++. Python is also usable as an extension language for applications that need a programmable interface. The Python implementation is portable: it runs on many brands of UNIX, on Windows, DOS, OS/2, Mac, Amiga... If your favorite system isn't listed here, it may still be supported, if there's a C compiler for it. Ask around on comp.lang.python -- or just try compiling Python yourself. The Python implementation is copyrighted but freely usable and distributable, even for commercial use. What Else? ------------------------------------------------------------------------------ IbPy is not a product of Interactive Brokers, nor am I affiliated with IB. I am a satisfied IB customer, of course. IbPy is installed with distutils. Refer to the Python distutils documentation for more information. The digest version is:: $ tar xzf IbPy-0.7.0-9.00.tar.gz $ cd IbPy-0.7.0-9.00 $ python setup.py install The TWS demo system is available here: http://interactivebrokers.com/cgi-pub/jtslink.pl?user_name=edemo The stand-alone TWS and other API software is available from IB: http://interactivebrokers.com/ IbPy is distributed under the New BSD License. See the LICENSE file in the release for details. I'm very interested in your experience with IbPy. Please drop me an note with any feedback you have. Troy Melhase mailto:troy@gci.net .. _java2python: http://code.google.com/p/java2python/ __ http://www.interactivebrokers.com/en/general/about/about.php __ http://python.org/doc/Summary.html

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New GSM/GPRS board with Python interpreter
by massimo.battisti＠gmail.com Feb. 21, 2007

Feb. 21, 2007

Area SX has released a new board based on a GSM/GPRS/GPS engine with embedded Python interpreter. The board features input and output lines, RS232 serial line, debug serial line, backup battery and much more. This board allows you to build a remote SMS or GPRS control or positioning system using the Python language. If you are interested in this product you can read: http://www.areasx.com/index.php?D=1&id=8173&lang_switch=ENG

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lxml 1.2 released
by Stefan Behnel Feb. 20, 2007

Feb. 20, 2007

Hi all, lxml 1.2 has been released to the cheeseshop. http://cheeseshop.python.org/pypi/lxml This is a somewhat conservative release in that it brings no major new features. It rather contains a number of bug fixes and cleanups, both internally and at the API level. Building lxml should have become easier again, and hacking the build process should now be a lot simpler. The complete changelog follows. What is lxml? """ lxml is a Pythonic binding for the libxml2 and libxslt libraries. It provides safe and convenient access to these libraries using the ElementTree API. It extends the ElementTree API significantly to offer support for XPath, RelaxNG, XML Schema, XSLT, C14N and much more. Lxml also features a sophisticated API for custom element classes. This is a simple way to write arbitrary XML driven APIs on top of lxml. There is a separate module lxml.objectify that implements a data-binding API on top of lxml.etree. """ See the web page for more information and documentation: http://codespeak.net/lxml/ Have fun, Stefan ========== ChangeLog: ========== 1.2 (2007-02-20) ================ Features added -------------- * Rich comparison of QName objects * Support for regular expressions in benchmark selection * get/set emulation (not .attrib!) for attributes on processing instructions * ElementInclude Python module for ElementTree compatible XInclude processing that honours custom resolvers registered with the source document * ElementTree.parser property holds the parser used to parse the document * setup.py has been refactored for greater readability and flexibility * --rpath flag to setup.py to induce automatic linking-in of dynamic library runtime search paths has been renamed to --auto-rpath. This makes it possible to pass an --rpath directly to distutils; previously this was being shadowed. Bugs fixed ---------- * Element instantiation now uses locks to prevent race conditions with threads * ElementTree.write() did not raise an exception when the file wasn't writable * Error handling could crash under Python <= 2.4.1 - fixed by disabling thread support in these environments * Element.find*() did not accept QName objects as path Other changes ------------- * code cleanup: redundant _NodeBase super class merged into _Element class Note: although the impact should be zero in most cases, this change breaks the compatibiliy of the public C-API

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