Mailman 3 November 2002 - Python-announce-list

Python-friendly Web Hosting Wiki
by Skip Montanaro 17 Nov '02

17 Nov '02

A new Wiki page devoted to Python-friendly web hosting services is available on the Python.org website. This page replaces the previously static page which wasn't getting properly updated due to lack of time on someone's part. If you use or manage a service you feel deserves to be mentioned, click on over to http://www.python.org/cgi-bin/moinmoin/PythonHosting and check it out. There is plenty of online help available for people using a Wiki for the first time. If you have feedback or questions, send them along to webmaster(a)python.org. -- Skip Montanaro - skip(a)pobox.com http://www.mojam.com/ http://www.musi-cal.com/

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Kura 2.0 released.
by Boudewijn Rempt 16 Nov '02

16 Nov '02

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Kura 2.0 - ------------------------------------------------------------------ I am pleased to announce the second release of Kura. Kura is a complete system for the handling of linguistic data, especially fieldwork data from small-corpus languages. It allows users to enter texts in any language, analyze those texts and bring the analyzed linguistic facts into relation with each other. This is the second full release of Kura for Unix/X11. Kura no longer supports Windows. Kura is available at: http://www.valdyas.org/linguistics/index.html There is both an rpm package and a tarball: http://www.xs4all.nl/linguistics/kura-2.0-1.rpm http://www.xs4all.nl/linguistics/kura-2.0.tgz Features New in this release are: * Support for files to store data. MySQL is still fully supported. * port to Qt 3.x (which means better Unicode support). * A very complete manual. * Dropped support for parse sets. * An improved interlinear text editor. * Drag and drop from Kura to editors. * Export to docbook sgml. * Many, many bugfixes. Kura uses the following run-time components: MySQL, MySQLdb, Python, PyQt. MySQL is no longer absolutely necessary. License Kura is free software and distributed under the Python license. This means that anyone can download and use Kura for free, anyone can alter Kura to his or her own liking and distribute the altered version free or for profit. However any changes must be contributed back to the me, and I have the right to incorporate those changes in new, free versions of Kura. - ------------------------------------------------------------------ Boudewijn Rempt | boud(a)valdyas.org <P><A HREF="http://www.valdyas.org/linguistics">Kura 2.0</A> - Kura is an application for the analysis and presentation of linguistic data. (16-Nov-2002) -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.6 (GNU/Linux) Comment: For info see http://www.gnupg.org iD4DBQE91mBYdaCcgCmN5d8RAsTgAKDN5EwgfcFRPDNFdIVGXgJjJXPvJQCWOhIF ByhGse+knV3Lvg+Iu11+Ng== =byP/ -----END PGP SIGNATURE-----

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Updated Cygwin Package: python-2.2.2-1
by Jason Tishler 15 Nov '02

15 Nov '02

New News: === ==== I have updated the version of Python to 2.2.2-1. The tarballs should be available on a Cygwin mirror near you shortly. The _socket module is still being built static instead of shared to workaround a fork() issue with DLL base address conflicts. See the README for more details. Old News: === ==== Python is an interpreted, interactive, object-oriented programming language. If interested, see the Python web site for more details: http://www.python.org/ Please read the README file: /usr/doc/Cygwin/python-2.2.2.README since it covers requirements, installation, known issues, etc. To update your installation, click on the "Install Cygwin now" link on the http://cygwin.com/ web page. This downloads setup.exe to your system. Then, run setup and answer all of the questions. Note that we have recently stopped downloads from sources.redhat.com (aka cygwin.com) due to bandwidth limitations. This means that you will need to find a mirror which has this update. In the US, ftp://mirrors.rcn.net/mirrors/sources.redhat.com/cygwin/ is a reliable high bandwidth connection. In Germany, ftp://ftp.uni-erlangen.de/pub/pc/gnuwin32/cygwin/mirrors/cygnus/ is usually pretty good. In the UK, http://programming.ccp14.ac.uk/ftp-mirror/programming/cygwin/pub/cygwin/ is usually up-to-date within 48 hours. If one of the above doesn't have the latest version of this package then you can either wait for the site to be updated or find another mirror. The setup.exe program will figure out what needs to be updated on your system and will install newer packages automatically. If you have questions or comments, please send them to the Cygwin mailing list at: cygwin(a)cygwin.com . I would appreciate if you would use this mailing list rather than emailing me directly. This includes ideas and comments about the setup utility or Cygwin in general. If you want to make a point or ask a question, the Cygwin mailing list is the appropriate place. *** CYGWIN-ANNOUNCE UNSUBSCRIBE INFO *** If you want to unsubscribe from the cygwin-announce mailing list, look at the "List-Unsubscribe: " tag in the email header of this message. Send email to the address specified there. It will be in the format: cygwin-announce-unsubscribe-you=yourdomain.com(a)cygwin.com Jason -- PGP/GPG Key: http://www.tishler.net/jason/pubkey.asc or key servers Fingerprint: 7A73 1405 7F2B E669 C19D 8784 1AFD E4CC ECF4 8EF6

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spyce v1.2.7
by Rimon Barr 15 Nov '02

15 Nov '02

Spyce v1.2.7 released on 15 Nov 2002 SPYCE is a server-side engine that supports simple and efficient Python-based dynamic HTML generation. Those who like Python and are familiar with JSP, or PHP, or ASP, should have a look at this engine. It allows one to generate dynamic HTML content just as easily, using Python for the dynamic parts. Its modular design makes it very flexible and extensible. It can also be used as a command-line utility for HTML pre-processing. Get it at: http://spyce.sourceforge.net This release continue the internal restructuring of the engine code, which has resulted in some performance improvements. This is almost done now, and I will refocus on features. Some modules may have been broken, but should not be difficult to fix to conform to the new API. The documentation will be updated shortly. The highlights sice v1.2.6: - internal restructuring continues - separated spyce exceptions - separated spyce configuration - expanded spyce API and spyceServer - spyce.spyceDone now imported as spyceDone - simplified spyceModule - renamed wrapper field, to _api - old spyceModule available as spyceModulePlus - all standard modules updated - fixed - syntax errors were not reported properly sice v1.2.4 - file-based spyce caching, with config option - performance improvements For prior release information, view the change log at: http://cvs.sourceforge.net/cgi-bin/viewcvs.cgi/spyce/spyce/CHANGES?rev=HEAD Perhaps most importantly, I have spent a considerable time to test this release, and I expect it to be quite stable. Comments, suggestions and bug reports are appreciated. Enjoy, Rimon.

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pyCGNS v0.6
by Marc Poinot 15 Nov '02

15 Nov '02

----------------------------------------------------------------------- pyCGNS v0.6 This package is a Python wrapper for CGNS (http://www.cgns.org) It is useful for people doing archival, data exchange or pre/post processing on CFD (Computational Fluid Dynamics) data. ----------------------------------------------------------------------- This release has two new tools and includes a proposal for a CGNS DTD: cgl - a kind of 'ls', filters information found in the CGNS files sift - an XML validator which can be used to check the CGNS compliance of a given tree. ----------------------------------------------------------------------- Package pyCGNS uses CGNS, Python, Numeric Python and pyXML. If you want more info, including the package download, please go to: http://elsa.onera.fr/CGNS/releases -MP- ----------------------------------------------------------------------- Marc POINOT Alias: marcvs Email: poinot(a)onera.fr ONERA -MFE/DSNA/ELSA Tel: 01.46.73.42.84 Info: elsa-info(a)onera.fr 29, Div. Leclerc Fax: 01.46.73.41.66 Site: 92322 Chatillon FRANCE Project: elsA Web: http://www.onera.fr

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ANN: Logging Package v0.4.7 released
by vinay_sajip＠yahoo.co.uk 15 Nov '02

15 Nov '02

A new version of the proposed Python standard logging package (as per PEP 282) has been released. What Does It Do? ================ The logging package offers the ability for any Python program to log events which occur during program execution. It's typically used to provide application diagnostics, warnings and error messages. In addition to capturing "what happened", "where it happened", "when it happened", "how important it is" and event specific data, you can configure, without changing the application source code, both the verbosity of logging and the routing of events to different destinations such as console, disk files, sockets, email addresses, Web servers, SOAP servers etc. etc. You can even change the configuration of a running program without stopping and restarting it! You can use the logging package in exception handlers, and it will include traceback information in the log. It's thread-safe, and very easy to use - just "import logging" and log away! Classes provided include: Logger - used to log messages for a particular area of an application. You can instantiate these wherever you want, there's no need to pass references to them around your application. You can log events based on importance levels of DEBUG (least important), INFO, WARN, ERROR, and CRITICAL (most important). You can define your own levels if the default levels don't meet your requirements. Handler - used to route events to particular destinations. Handlers included are: StreamHandler (for generalized streams, including console) FileHandler (for disk files - including log file rotation with size limits for log files) SocketHandler (for sending events to a TCP socket) DatagramHandler (for sending events to a UDP socket - faster, but less reliable than TCP) SMTPHandler (send events to arbitrary email addresses) HTTPHandler (send events to Web servers) SysLogHandler (send events to Unix syslog) MemoryHandler (batch up events and process them several at a time) NTEventLogHandler (send events to Windows NT event logs) There are also examples of XMLHandler and SOAPHandler in the distribution. Formatter - used to format events as text strings. Flexible "msg % arg_tuple" formatting is the basis for formatting, with flexible date/time formatting including ISO8601 and any strftime-based formats. Filter - used when filtering based on importance (DEBUG/INFO/WARN/ERROR/CRITICAL) is not sufficient. The distribution includes examples of filters based on class matching, regular expression matching, value matching, and logger matching. In the unlikely event that you're daunted by all the apparent complexity, fear not. The package offers a simple function-based interface to allow very simple, almost casual use of the underlying features. In addition to the core logging functionality, you get the ability to configure logging using a ConfigParser-based text file format, a Tkinter-based GUI configurator which creates configuration files for you, and a simple network-based event receiver which receives events on TCP, UDP, HTTP and SOAP ports. This is suitable for testing and might perhaps serve as a model for your own event receivers. Also included are over 20 test scripts which serve both as test harnesses and examples of how to use the logging package. You can get more information from http://www.red-dove.com/python_logging.html There are "download" and "recent changes" links at the top of that page. The new stuff includes some bug fixes, better support for class-based filtering and logging, more documentation of the configuration file format, an example hand-coded configuration file for those people who can't use the GUI configurator, an example Filter for regular-expression match-based filtering, and more! As always, your feedback is most welcome (especially bug reports, patches and suggestions for improvement). Enjoy! Cheers Vinay Sajip Red Dove Consultants Ltd. Changes since the last version: ================================= Made into a package with three modules: __init__ (the core code), handlers (all handlers other than FileHandler and its bases) and config (all the config stuff). Before doing this: Updated docstrings to include a short line, then a blank line, then more descriptive text. Renamed 'lvl' to 'level' in various functions. Changed FileHandler to use "a" and "w" instead of "a+" and "w+". Moved log file rotation functionality from FileHandler to a new class RotatingFileHandler. Improved docstring describing rollover. Updated makePickle to use 4-byte length and struct module, likewise logrecv.py. Also updated on-the-fly config reader to use 4-byte length/struct module. Altered ConfigParser test to look at 'readline' rather than 'read'. Added optional "defaults" argument to fileConfig, to be passed to ConfigParser. Renamed ALL to NOTSET to avoid confusion. Commented out getRootLogger(), as obsolete. To do regression testing, run log_test.py and compare the created files stdout.log and stderr.log against the files stdout.exp and stderr.exp. They should match except for a couple of exception messages which give absolute file paths. Updated python_logging.html to remove links to logging_pydoc.html, which has been removed from the distribution. Changed default for raiseExceptions to 1.

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cx_Freeze
by Anthony Tuininga 14 Nov '02

14 Nov '02

Now that I have used these tools internally for a few months I am pleased to announce the first public release of cx_Freeze, a set of utilities for freezing Python scripts into executables using many of the techniques found in Thomas Heller's py2exe, Gordon McMillan's Installer and the Freeze utility that ships with Python itself. They are available at http://www.computronix.com/utilities.shtml WHY? Why did I go to the trouble of creating another set of utilities when these three utilities already existed? The Freeze utility that comes with Python itself requires a source distribution, a C compiler and linker which makes for a complex environment for creating executables. In addition, this method is very slow for creating executables as compared to the other methods. Py2exe and Installer both use an import hook at runtime which means that the development environment and the runtime environment are considerably different. In addition, py2exe is only designed to work in the Windows environment and I had needs for other environments. HOW? How does it work? A base executable is created which contains code for unpacking the list of frozen modules, starting up the Python interpreter and passing control to the script which is being frozen. When a script is frozen, the script is searched for all references to modules and these modules are then byte compiled and written to the end of the base executable. If the modules that are referenced are extensions written in C, these modules must be included in the path in which the frozen executable is deployed. Comments and suggestions welcome. -- Anthony Tuininga anthony(a)computronix.com Computronix Distinctive Software. Real People. Suite 200, 10216 - 124 Street NW Edmonton, AB, Canada T5N 4A3 Phone: (780) 454-3700 Fax: (780) 454-3838 http://www.computronix.com

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ANNOUNCE: IndexedCatalog 0.4
by Johan Dahlin 14 Nov '02

14 Nov '02

ANNOUNCE: Released IndexedCatalog 0.4 Async Open Source releases today the third public version of IndexedCatalog. IndexedCatalog is an extension to the Zope Object Database (ZODB) that makes object retrieval easier and faster, by indexing all fields by type (string/integer/float/date) and providing a simple query language. http://www.async.com.br/projects/IndexedCatalog/ * Changes - New query language: * Includes Mike Fletcher's SimpleParse 2.0: (code is included to avoid the external dependency) * Parentheses * Arrays (x in [1, 2, 3]) * Object references can be used in the query (using the %o parameter format) * Substring case sensitive and case in sensitive matching * Boolean operators: and/or/not - mx.DateTime support, simplifies date and time indexing/querying - Foreign references works correctly now. (Delegate indexing/queries to other catalogs) - Optimized substring searching, should be 10-30% faster. - More tests in the test suites. - Dynamic attributes for simple types (no instances yet) Next release will include complete dynamic types, documentation and a (hopefully) stable API. A blurb about IndexedCatalog follows. --- blurb ------------------------------------------------------------- * Overview IndexedCatalog is an extension to the Zope Object Database (ZODB) developed at Async Open Source that provides indexing and allows queries for objects based on attributes. This is accomplished by indexing all fields by type (string/integer/float) and by implementing a query language. IndexedCatalog is licensed under the Lesser GNU Public License (LGPL). * Features - Provides a Catalog class that stores objects and offers a query interface. - Provides Indexes for Strings, Floats, Integers, Dates and Instances. - Requires very little change to objects for catalogs and indexes to work: basically inherit from IndexedCatalog.IndexedObject,, add some special attributes to the Classes, and use catalog.insert() to add the instances to the catalogs. - Supports composite objects, initializing and indexing sub-objects automatically. - Supports queries by type, and allows querying sub-object or referenced object attribute values. - Allows ordering query results by field, both ascending and descending. - Is 100% pure python, and by using Distutils requires minimal effort to install. * Feedback We really would appreciate feedback on a few things: - The efficiency of the indexing and query algorithms, especially sub-string matching. - The new improved query language - All comments are appreciated; don't hesitate to post your opinion. * Download You can download IndexedCatalog from http://www.async.com.br/projects/IndexedCatalog/ * Dependencies Python 2.1.2 or higher or Python 2.2.2 or higher. (Python CVS/2.3 untested) ZODB 1.0.x and 3.x are known to work eGenix mx Extensions: Currently only mx.DateTime, but we plan to use larger parts later on. * Installing Using standard python distutils: python setup.py install Or just set PYTHONPATH to the directory you unpacked IndexedCatalog in. * Reporting bugs Report bugs, feature requests and all other things related to IndexedCatalog at http://bugs.async.com.br/enter_bug.cgi?product=IndexedCatalog * Contact Johan Dahlin <jdahlin(a)async.com.br> Christian Reis <kiko(a)async.com.br> * About Async Async Open Source is a company devoted to developing custom applications based on open source software, and providing support for other existing open source products. We are active in the OSS community, supporting (and employing) project maintainers, encouraging release of software as open source, and promoting reuse of existing open source products. Async is located in São Carlos, SP, Brazil, and online at http://www.async.com.br/ -- Johan Dahlin <jdahlin(a)async.com.br> Async Open Source

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RELEASED: Pymacs 0.19
by pinard＠iro.umontreal.ca 14 Nov '02

14 Nov '02

Hello, my friends. It has been a long time since the last Pymacs bug! Here is a new release. * One may now correctly iterate overs Emacs Lisp lists from Python using a short `for' form. Just for illustrating Pymacs to newcomers, here is a simple, but complete example. Once Pymacs installed, and after putting the following file as `essai.py' somewhere on on the Python search path: from Pymacs import lisp def essai(list): for element in list: lisp.message('%s' % element) the following commands given within in Emacs: M-x pymacs-load RET essai RET RET M-: (essai-essai '(a b c d)) RET will append five lines "'a", "'b", "'c", "'d" and "nil" to the Emacs `*Messages*' buffer. The last "nil" is merely the return value of the Python `essai' function. * On the Emacs side, the function `(pymacs-call FUNCTION ARGUMENT...)' is added for convenience. It works like `pymacs-apply', except that arguments are given separately instead of bundled into a single list. * The documentation has been slightly revised towards Python 2 times. For specifying the Emacs interactive behaviour of Python functions, it suggests that we prefer function attributes over a global dictionary, unless there is a real portability concern for older Python versions. -------------------- Pymacs is a powerful tool which, once started from Emacs, allows both-way communication between Emacs Lisp and Python. Yet, Pymacs aims Python as an extension language for Emacs rather than the other way around; this assymetry is reflected in some design choices. Within Emacs Lisp code, one may load and use Python modules. Python functions may themselves use Emacs services, and handle Emacs Lisp objects kept in Emacs Lisp space. `http://www.iro.umontreal.ca/~pinard/pymacs/' contains a copy of the Pymacs documentation in HTML form. The canonical Pymacs distribution is available as `http://www.iro.umontreal.ca/~pinard/pymacs/Pymacs.tar.gz'. Report problems and suggestions to `mailto:pinard@iro.umontreal.ca'. -- François Pinard http://www.iro.umontreal.ca/~pinard

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Article: Proper XML Output in Python
by Uche Ogbuji 14 Nov '02

14 Nov '02

http://www.xml.com/pub/a/2002/11/13/py-xml.html In this article, I methodically thrash out the issues on producing XML output from Python programs. -- Uche Ogbuji Fourthought, Inc. http://uche.ogbuji.net http://4Suite.org http://fourthought.com Python&XML column: 2. Introducing PyXML - http://www.xml.com/pub/a/2002/09/25/py.html The Past, Present and Future of Web Services 1 - http://www.webservices.org/index.php/article/articleview/663/1/24/ The Past, Present and Future of Web Services 2 - 'http://www.webservices.org/index.php/article/articleview/679/1/24/ Serenity through markup - http://adtmag.com/article.asp?id=6807 Tip: Using generators for XML processing - http://www-106.ibm.com/developerworks/xml/library/x-tipgenr.html

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