🌐 Mailman 3 April 2007 - Python-announce-list - python.org

ANN: April 12, 2007 Meeting Notes - Omaha Python Users Group
by dundeemt April 13, 2007

April 13, 2007

First Off, a big thank you to Jay and Reboot The User for allowing us to have our meeting at Reboot The User. It worked out very well - nice seeing your code on a 50" display! Jay also supplied the Internet access too. While the meeting was small, I consider it to be successful. We talked a little bit about PyCon and then moved on to the email2rss project. There was discussion on the two major packages used, libgmail and PyRSS2Gen module. You can see the outcome of the email2rss.py project at http://www.dundeemt.com/rss/omaha-rss.xml Which is a RSS feed of the User Group mail list. Other elements of the project discussed were: * slices * pickle module * option parsing * pylint * editors (Komodo Edit/IDE and SciTE) There was an open discussion about python in the work place. The consensus seemed to be small skunk-work projects were ideal for introducing the language. Python's ability to sling data and ability to integrate with sysadmin type scripts make it ideal for this type of assault. The wiki, mailing list and flyer were shown. Until the need presents itself, we will continue to use the resources provided by the PSF. In fact, there is an effort through the Python Advocacy group to enhance user group resources. Go Advocacy! There was discussion of the rumored Google-Plex / Council Bluffs. It was agreed that this would be a good thing for the metro IT community if it is true. Council Bluffs, IA sits across the Missouri River from Omaha. A number of our members work in Council Bluffs. Pizza and Pop were provided by Dundee Media & Technology. Be sure to mail the list with requests for toppings and flavors for the next meeting, as DM&T will sponsoring the food and beverages for the meetings. For more information on the upcoming meetings and other python related activities please see: http://www.omahapython.org

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Python in a strange land: IronPython and ASP.NET at the next PyGTA
by Mike C. Fletcher April 13, 2007

April 13, 2007

IronPython is a native implementation of Python on the Microsoft .NET platform. The implementation is from Microsoft and the language is well supported by the Visual Studio development environment which has always been one of the Microsoft platform's strengths. Though Python is often associated with the Free and Open Source communities, consultants and developers frequently need to solve real-world problems using Python on the .NET platform. IronPython makes using Python in these situations a natural choice for the Python programmer. Our speaker for the evening is Myles Braithwaite, a local consultant and developer. He is going to give us an idea of how developing a web application using ASP.NET looks when using IronPython instead of C#, as well as his impressions of the platform. As usual, we will hold the presentation at Linux Caffe, gathering for introductions at 6:30 PM, with the formal presentation beginning at 7:00 PM. We normally head out around 8:30 PM for beer, coffee and/or ice cream. You can find directions and maps to Linux Caffe on the wiki: http://web.engcorp.com/pygta/wiki/NextMeeting Hope to see you all there, Mike -- ________________________________________________ Mike C. Fletcher Designer, VR Plumber, Coder http://www.vrplumber.com http://blog.vrplumber.com

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qxjsonrpc 0.0.7 released - WSGI support, qooxdoo login/logout demo
by Viktor Ferenczi April 13, 2007

April 13, 2007

The qxjsonrpc package contains everything to implement JSON-RPC backends for WEB applications using the QooXDoo ( http://qooxdoo.org ) library or simply requiring RPC functionality. Download, example, etc.: http://python.cx.hu/qxjsonrpc Highlights of this release: - WSGI support has been implemented. WSGI test uses the wsgiref reference implementation from Python 2.5's standard library to server the test application. WSGI support is not tested with other WSGI compliant servers. There could be some tests for the Apache 2.0 mod_wsgi in the near future. - New qooxdoo login / logout demo, uses fixed username and password. Creates session on successful login, deletes session on logout. Copy qooxdoo's script and resource subdirectory from the quickstart application into the test subdirectory of qxjsonrpc, run login.py, then open login.html in your browser. Username: admin, password: 1234 - Domain access decorator is fixed and a test included. - Package version information included. - Small bugfixes. Features: - Supports four type of HTTP transport: GET, POST (_data_ and separate variables) and ScriptTransport. - Any object can be a service, any method can be easily published using decorators. - Access control decorators: @public, @domain, @session and @fail. - It's possible to implement new access control methods easily, such as methods accessible only to administrators, etc. - Correct error handling by exception class hierarchy. - Session support (requires cookies when using the HTTP transport), Session object is automatically passed to the method. - Request object is passed to a method if decorated by @request, this gives access to all aspects of request handling. - Uses python-cjson-1.0.3x or simplejson to encode/decode JSON represenation. Extends both of them to transparently handle python date and datetime objects. - Simple implementation, the package's source code is fully documented by docstrings and comments. - WSGI support. - Actively developed and bugfixed. (But very young.) More server interfaces are planned (CherryPy, WebStack, etc.). Expect more documentation, tests and examples. - Supports Python 2.4 and up, tested with 2.5.0. Example: import math import qxjsonrpc import qxjsonrpc.http class MyService(object): @qxjsonrpc.public def getPi(self, *args): print 'Called: getPi%r'%(args,) return math.pi server=qxjsonrpc.http.HTTPServer(debug=True) server.setService('myservice', MyService()) server.serve_forever() Run the script above, then open your browser and navigate to: http://127.0.0.1:8000/?id=1&service=myservice&method=getPi You will get a valid JSON-RPC response: {"error": null, "id": 1, "result": 3.14159265359} Please report bugs to: python(a)cx.hu

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ANN: pyparsing-1.4.6 released
by Paul McGuire April 12, 2007

April 12, 2007

I'm happy to announce v1.4.6 of pyparsing has been released. This latest version of pyparsing has a few minor bug-fixes and enhancements, and another performance improvement for recursive grammars (those that use the Forward class). The salient features of this new release are: Simplified the ParseException constructor, to better support the standard exception idiom: raise ParseFatalException, "unexpected text: 'Spanish Inquisition'" Modified cyclic object references within ParseResults objects to use weakrefs, to be gentler on the garbage collector. Added method getTokensEndLoc(), to be called from within a parse action, for those parse actions that need both the starting *and* ending location of the parsed tokens within the input text. Various bug-fixes: - tuple as named result now reports entire tuple, not just first element - SkipTo with include=True now returns the skipped-to tokens properly - makeHTMLTags/makeXMLTags and anyOpenTag and anyCloseTag helpers now recognize attributes and tags with namespaces - countedArray now matches when defined within an Or expression - keepOriginalText now preserves named results fields - fixed Unicode bug in upcase and downcase methods - corrected typo in OnceOnly reset() method - enhanced documentation to describe behavior when parsing input strings containing tabs - cleaned up internal decorators to preserve function names, docstrings, etc. This release also includes some new examples: - holaMundo.py - Spanish translation of HelloWorld - sexpParser.py - S-exp parser - jsonParser.py (update) - minor bug-fixes to previously released example for parsing JSON (JavaScript Object Notation) object serialization strings - macroExpander.py - macro preprocessor to substitute defined macros Download pyparsing 1.4.6 at http://sourceforge.net/projects/pyparsing/. The pyparsing Wiki is at http://pyparsing.wikispaces.com -- Paul ======================================== Pyparsing is a pure-Python class library for quickly developing recursive-descent parsers. Parser grammars are assembled directly in the calling Python code, using classes such as Literal, Word, OneOrMore, Optional, etc., combined with operators '+', '|', and '^' for And, MatchFirst, and Or. No separate code-generation or external files are required. Pyparsing can be used in many cases in place of regular expressions, with shorter learning curve and greater readability and maintainability. Pyparsing comes with a number of parsing examples, including: - "Hello, World!" (English, Korean, Greek, and Spanish(new)) - chemical formulas - configuration file parser - web page URL extractor - 5-function arithmetic expression parser - subset of CORBA IDL - chess portable game notation - simple SQL parser - Mozilla calendar file parser - EBNF parser/compiler - Python value string parser (lists, dicts, tuples, with nesting) (safe alternative to eval) - HTML tag stripper - S-expression parser (new) - macro substitution preprocessor (new)

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Omaha Python Users Group - Meeting April 12, 2007
by dundeemt April 11, 2007

April 11, 2007

Omaha Python Users Group http://www.OmahaPython.org When: April 12, 2007 @ 7:00pm Where: Reboot The User 13416 A Street Omaha, NE 68144 For More Information, please see http://www.omahapython.org/

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SQLObject 0.9.0b1
by Oleg Broytmann April 11, 2007

April 11, 2007

Hello! I'm pleased to announce the 0.9.0b1 release of SQLObject, the first beta of the upcoming 0.9 release. What is SQLObject ================= SQLObject is an object-relational mapper. Your database tables are described as classes, and rows are instances of those classes. SQLObject is meant to be easy to use and quick to get started with. SQLObject supports a number of backends: MySQL, PostgreSQL, SQLite, and Firebird. It also has newly added support for Sybase, MSSQL and MaxDB (also known as SAPDB). Where is SQLObject ================== Site: http://sqlobject.org Development: http://sqlobject.org/devel/ Mailing list: https://lists.sourceforge.net/mailman/listinfo/sqlobject-discuss Archives: http://news.gmane.org/gmane.comp.python.sqlobject Download: http://cheeseshop.python.org/pypi/SQLObject/0.9.0b1 News and changes: http://sqlobject.org/News.html What's New ========== News since 0.8 -------------- Features & Interface -------------------- * Support for Python 2.2 has been declared obsolete. * Removed actively deprecated attributes; lowered deprecation level for other attributes to be removed after 0.9. * SQLite connection got columnsFromSchema(). Now all connections fully support fromDatabase. There are two version of columnsFromSchema() for SQLite - one parses the result of "SELECT sql FROM sqlite_master" and the other uses "PRAGMA table_info"; the user can choose one over the other by using "use_table_info" parameter in DB URI; default is False as the pragma is available only in the later versions of SQLite. * Changed connection.delColumn(): the first argument is sqlmeta, not tableName (required for SQLite). * SQLite connection got delColumn(). Now all connections fully support delColumn(). As SQLite backend doesn't implement "ALTER TABLE DROP COLUMN" delColumn() is implemented by creating a new table without the column, copying all data, dropping the original table and renaming the new table. * Versioning_. .. _Versioning: Versioning.html * MySQLConnection got new keyword "conv" - a list of custom converters. * Use logging if it's available and is configured via DB URI. * New columns: TimestampCol to support MySQL TIMESTAMP type; SetCol to support MySQL SET type; TinyIntCol for TINYINT; SmallIntCol for SMALLINT; MediumIntCol for MEDIUMINT; BigIntCol for BIGINT. Small Features -------------- * Support for MySQL INT type attributes: UNSIGNED, ZEROFILL. * Support for DEFAULT SQL attribute via defaultSQL keyword argument. * Support for MySQL storage ENGINEs. * cls.tableExists() as a shortcut for conn.tableExists(cls.sqlmeta.table). * cls.deleteMany(), cls.deleteBy(). Bug Fixes --------- * idName can be inherited from the parent sqlmeta class. For a more complete list, please see the news: http://sqlobject.org/News.html Oleg. -- Oleg Broytmann http://phd.pp.ru/ phd(a)phd.pp.ru Programmers don't die, they just GOSUB without RETURN.

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SQLObject 0.8.2
by Oleg Broytmann April 11, 2007

April 11, 2007

Hello! I'm pleased to announce the 0.8.2 release of SQLObject. What is SQLObject ================= SQLObject is an object-relational mapper. Your database tables are described as classes, and rows are instances of those classes. SQLObject is meant to be easy to use and quick to get started with. SQLObject supports a number of backends: MySQL, PostgreSQL, SQLite, and Firebird. It also has newly added support for Sybase, MSSQL and MaxDB (also known as SAPDB). Where is SQLObject ================== Site: http://sqlobject.org Development: http://sqlobject.org/devel/ Mailing list: https://lists.sourceforge.net/mailman/listinfo/sqlobject-discuss Archives: http://news.gmane.org/gmane.comp.python.sqlobject Download: http://cheeseshop.python.org/pypi/SQLObject/0.8.2 News and changes: http://sqlobject.org/News.html What's New ========== News since 0.8.1 ---------------- * Fixed ConnectionHub.doInTransaction() - if the original connection was processConnection - reset processConnection, not threadConnection. * Fixed a bug in DateValidator caused by datetime being a subclass of date. * Fixed test_deep_inheritance.py - setup classes in the correct order (required for Postgres 8.0+ which is strict about referential integrity). For a more complete list, please see the news: http://sqlobject.org/News.html Oleg. -- Oleg Broytmann http://phd.pp.ru/ phd(a)phd.pp.ru Programmers don't die, they just GOSUB without RETURN.

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[ANN] mlabwrap-1.0final
by Alexander Schmolck April 11, 2007

April 11, 2007

I'm pleased to finally announce mlabwrap-1.0: Project website --------------- <http://mlabwrap.sourceforge.net/> Description ----------- Mlabwrap-1.0 is a high-level python to matlab(tm) bridge that makes calling matlab functions from python almost as convenient as using a normal python library. It is available under a very liberal license (BSD/MIT) and should work on all major platforms and (non-ancient) python and matlab versions and either numpy or Numeric (Numeric support will be dropped in the future). Examples -------- Creating a simple line plot: >>> from mlabwrap import mlab; mlab.plot([1,2,3],'-o') Creating a surface plot: >>> from mlabwrap import mlab; from numpy import * >>> xx = arange(-2*pi, 2*pi, 0.2) >>> mlab.surf(subtract.outer(sin(xx),cos(xx))) Creating a neural network and training it on the xor problem (requires netlab) >>> net = mlab.mlp(2,3,1,'logistic') >>> net = mlab.mlptrain(net, [[1,1], [0,0], [1,0], [0,1]], [0,0,1,1], 1000) What the future holds --------------------- Please note that mlabwrap-1.0 will be the last non-bugfix release with Numeric support. Future versions of mlabwrap will require numpy be a part of scipy's scikits infrastructure (so the package name will be ``scikits.mlabwrap``) and use setuptools rather than distutils so that it should be possible to automatically download and install via EasyInstall. The next major version of mlabwrap should also bring more powerful proxying and marshalling facilities, but the default conversion behavior might be changed to reflect the fact that matlab is becoming increasingly less ``double`` (-matrix) centric; although wrappers for old-style behavior will be provided if backwards-incompatible interface changes are introduced, for upwards compatibility it is recommended to explicitly pass in float64 arrays rather than e.g. lists of ints if the desired input type that matlab should see is a double array (i.e. use ``mlab.sin(array([1., 2., 3.])`` rather than ``mlab.sin([1,2,3])`` for production code in order to be on the safe side)). Please have a look at <http://www.scipy.org/Mlabwrap> if you're interested in the ongoing development of mlabwrap and planned features. Feedback and support -------------------- The preferred formum for users to request help and offer feedback and keep informed about new releases is mlabwrap-user: <https://lists.sourceforge.net/lists/listinfo/mlabwrap-user> the list is low-volume and subscription is recommended. Discussion of mlabwrap development takes place on the scipy-dev (please mention mlabwrap in the subject line): <http://projects.scipy.org/mailman/listinfo/scipy-dev> cheers, Alexander Schmolck, mlabwrap author and maintainer

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SQLObject 0.7.5
by Oleg Broytmann April 11, 2007

April 11, 2007

Hello! I'm pleased to announce the 0.7.5 release of SQLObject. What is SQLObject ================= SQLObject is an object-relational mapper. Your database tables are described as classes, and rows are instances of those classes. SQLObject is meant to be easy to use and quick to get started with. SQLObject supports a number of backends: MySQL, PostgreSQL, SQLite, and Firebird. It also has newly added support for Sybase, MSSQL and MaxDB (also known as SAPDB). Where is SQLObject ================== Site: http://sqlobject.org Mailing list: https://lists.sourceforge.net/mailman/listinfo/sqlobject-discuss Archives: http://news.gmane.org/gmane.comp.python.sqlobject Download: http://cheeseshop.python.org/pypi/SQLObject/0.7.5 News and changes: http://sqlobject.org/docs/News.html What's New ========== News since 0.7.4 ---------------- * Fixed a bug in DateValidator caused by datetime being a subclass of date. * Fixed test_deep_inheritance.py - setup classes in the correct order (required for Postgres 8.0+ which is strict about referential integrity). For a more complete list, please see the news: http://sqlobject.org/docs/News.html Oleg. -- Oleg Broytmann http://phd.pp.ru/ phd(a)phd.pp.ru Programmers don't die, they just GOSUB without RETURN.

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New York City Python Users Group Meeting
by John Clark April 11, 2007

April 11, 2007

Greetings! The next New York City Python Users Group meeting is this Tuesday, April 10th, 6:30pm at at the Millennium Partners office at 666 Fifth Avenue (53rd St. and 5th Ave.) on the 8th Floor. We welcome all those in the NYC area who are interested in Python to attend. However, we need a list of first and last names to give to building security to make sure you can gain access to the building. RSVP to clajo04(a)mac.com to add your name to the list. More information can be found on the yahoo group page: <http://tech.groups.yahoo.com/group/nycpython/> http://tech.groups.yahoo.com/group/nycpython/ Hope to see you there! -John

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