Mailman 3 October 2002 - Python-announce-list

spyce v1.1.45
by Rimon Barr 13 Oct '02

13 Oct '02

SPYCE - Server Python Pages SPYCE is a webserver plugin that supports simple and efficient Python-based dynamic HTML scripting. 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 supports FastCGI, CGI and mod_python to plugin into Apache and most other webservers. It can also be used as a command-line utility for HTML pre-processing or as a web server proxy. v1.1.45 released on 13 October 2002. Get it at: http://spyce.sourceforge.net ---------- Most important changes since last posting (v1.1.39): external: - modules can now accept arguments - added server-level configuration file - site and documentation revamp - exception tracebacks identify specific error lines in code chunks - file globbing added to command-line interface - module directive deprecated; replaced with import internal: - redesigned modules interface - extended contants lists to conform to HTTP and HTML specs. - performance improvements modules: - new error handling module - added redirection to stdout module and loaded implicitly - new table of contents module ---------- Partial change log: Change Log v1.1.45 site and documentation revamp refactored the spyceModule class (see spyceModule.py) altered all standard modules to conform to new internal design new table-of-contents (toc) module (see docs) improved stdout module (see docs) added push() and pop() methods now loaded implicitly exception tracebacks in chunks identify specific error lines file globbing added to -O command-line option v1.1.44 module directive deprecated replaced with import tag import tag accepts args attribute calls module init() method at location of directive init() methods added to modules: session, compress see: http://spyce.sourceforge.net/doc_lang_directive.html http://spyce.sourceforge.net/doc_mod.html http://spyce.sourceforge.net/doc_mod_compress.html http://spyce.sourceforge.net/doc_mod_session.html http://spyce.sourceforge.net/doc_mod_new.html bugfix - modules finalized on redirect v1.1.43 bugfix - included files not inheriting modules properly bugfix - transform module inside included file v1.1.42 renamed spyce.conf to spyceApache.conf renamed spyceApache to spyceModpy renamed run_spyceApache to run_spyceModpy (affect spyceApache.conf) added server-level configuration file functionality server module search path modules to load at startup server-level error handler global server variables see: docs/doc_conf_common.html added response.isCancelled() function see: docs/doc_mod_response.html bugfix - early client disconnect caused problems under mod_python v1.1.41 extended HTTP response constants to conform to spec extended HTML entity encoded characters to conform to spec modified internal buffering semantics to allow eliminiation of special case code for specific HTTP return codes (redirects) in the common path performance improvements convenience functions transform.html_encode() and url_encode() added error module added: handles errors that occur during spyce processing bugfix - HTTP return codes propagated correctly under mod_python v1.1.40 bugfix - spyce syntax error propagated properly response headers cleared on an internal redirect case insensitive request.get,post,get1,post1,file v1.1.39 modified how filter module injects itself into output stream added response.addFilter() to allow piped functionality on the output stream, modules can insert write, writeStatic, writeExpr, flush and clear handlers added compress module for dynamic compression functionality compress module documentation renamed filter module to transform (name conflict with Python builtin) sys.path forced to be absolute before changing directory in CGI mode bugfix - spyce path trimmed to just filename when directory changed for CGI processing bugfix - spyce web server closes sockets ... Enjoy, Rimon. -- * Rimon Barr Ph.D. candidate, Computer Science, Cornell University | barr(a)cs.cornell.edu - http://www.cs.cornell.edu/barr - Y!IM: batripler +----

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TextIndexNG Extensions for Python released
by Andreas Jung 13 Oct '02

13 Oct '02

I am happy to announce the release of the TextIndexNG Extensions for Python 1.05 These extensions were developed as support modules for the Zope fulltext index TextIndexNG and they are now available as standalone package. The package consists of four independent modules: - TXNGSplitter: a very customisable module to split a string into words - PySimilarity: implements the soundex, metaphone, double metaphone algorithms - PyStemmer: linguistic stemmer support for 13 languages - normalizer: linguistic normalization by replacing e.g. accented characters by a more simpler representation All modules support unicode. License: Zope Public License (ZPL) Download: http://sourceforge.net/project/showfiles.php?group_id=50052

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ANNOUNCE: Optik 1.4 released
by Greg Ward 12 Oct '02

12 Oct '02

Optik 1.4 ========= Optik is a powerful, flexible, extensible, easy-to-use command-line parsing library for Python. Using Optik, you can add intelligent, sophisticated handling of command-line options to your scripts with very little overhead. Here's an example of using Optik to add some command-line options to a simple script: from optik import OptionParser [...] parser = OptionParser() parser.add_option("-f", "--file", action="store", type="string", dest="filename", help="write report to FILE", metavar="FILE") parser.add_option("-q", "--quiet", action="store_false", dest="verbose", default=1, help="don't print status messages to stdout") (options, args) = parser.parse_args() With these few lines of code, users of your script can now do the "usual thing" on the command-line: <yourscript> -f outfile --quiet <yourscript> -qfoutfile <yourscript> --file=outfile -q <yourscript> --quiet --file outfile (All of these result in options.filename == "outfile" options.verbose == 0 ...just as you might expect.) Even niftier, users can run one of <yourscript> -h <yourscript> --help and Optik will print out a brief summary of your script's optons: usage: <yourscript> [options] options: -h, --help show this help message and exit -fFILE, --file=FILE write report to FILE -q, --quiet don't print status messages to stdout That's just a taste of the flexibility Optik gives you in parsing your command-line. See the documentation included in the package for details. AUTHOR, COPYRIGHT, AVAILABILITY ------------------------------- Optik was written by Greg Ward <gward(a)python.net> The latest version of Optik can be found at http://optik.sourceforge.net/ Copyright (c) 2001 Gregory P. Ward. All rights reserved. CHANGES IN OPTIK 1.4 -------------------- [editorial note: most significant code changes in Optik 1.4 were made by David Goodger; except as noted below, David should be credited with everything in this list! I just rearranged some of his changes, renamed a few thing, and put out the release. --Greg] * Factored the help-formatting code out of OptionParser into some new classes (HelpFormatter and subclasses) in help.py. This should make it a lot easier to customize how help is formatted. * Added the notion of "option groups": an OptionParser can now contain several option groups, each which contains several options. The main purpose of this is to enable sensibly-grouped help output, but it opens up all sorts of interesting (and largely untested) possibilities for code to throw whole option groups around instead of individual options. Added two new classes: OptionGroup, and OptionContainer for code common to OptionParser and OptionGroup. (OptionContainer should be invisible to programmers using Optik). * Added the 'description' attribute and set_description() method to both OptionParser and OptionGroup (actually OptionContainer, but I just said that class was invisible). Again, this is to make help output more useful. * Made it easier for OptionParser subclasses to decide whether they should have the standard "help" option, by moving the logic from class level to the _populate_option_list() method. * Added the "choice" option type, which is just a string type constrained to a fixed set of values. * Added method get_default_values() to OptionParser. * Rewrote how OptionParser recognizes abbreviated long options; removed a redundant internal instance attribute. * Simplify parsing logic in OptionParser a tad by relocating a loop and renaming _process_arg() to _process_args(). -- Greg Ward <gward(a)python.net> http://www.gerg.ca/ Jesus Saves -- and you can too, by redeeming these valuable coupons!

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Article on using Python generators for XML and DOM processing
by Uche Ogbuji 12 Oct '02

12 Oct '02

Tip: Using generators for XML processing http://www-106.ibm.com/developerworks/xml/library/x-tipgenr.html Generators are a very powerful new language feature of Python 2.2. In this tip, Uche Ogbuji presents a set of techniques for using generators for fast and lucid XML processing patterns in Python. -- Uche Ogbuji Fourthought, Inc. http://uche.ogbuji.net http://4Suite.org http://fourthought.com Apache 2.0 API - http://www-106.ibm.com/developerworks/linux/library/l-apache/ Python&XML column: Tour of Python/XML - http://www.xml.com/pub/a/2002/09/18/py.html Python/Web Services column: xmlrpclib - http://www-106.ibm.com/developerworks/webservices/library/ws-pyth10.html

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ANN: ldiftemplate 0.1.0 released
by Tjabo Kloppenburg 12 Oct '02

12 Oct '02

NAME: ldiftemplate - a small module for quick "boss can add ldap objects" scripts. DESCRIPTION: When you're really happy with your ldap tree the moment comes where a dumb person (boss) asks you how he can hang new objects into this fancy tree by himself... Ugly... :-) This class gives me the ability to code simple scripts my boss can use to add some objects. It uses LDIF templates derived from real objects -- with simple placeholders in it. The class gives you a list of placeholders and descriptions so it is easy to print them before requesting the values (boss can see what he needs). After doing setPlaceholder( key, val ) for every placeholder you simply call getTupleList() to get a list with the two args you need for ldap.add_s(). It is fairly simple. MISSING FEATURES: - no support for base64 data ("name:: VALUE" in LDIF) - no detection for cross placeholder replacing [2 placeholders TTT and BUG: call setPlaceholder( 'TTT', 'HUMBUG') + setPlaceholder('BUG','something'): --> 'TTT: HUMsomething'] HOMEPAGE: http://www.home.unix-ag-org/tjabo/ldap/ (german) The in-source docs are english. And there's a method ".sample()", printing a sample LDIF template. Yes, the class's name is "new". I did not want to type "ldiftemplate" over and over again... HINT: Use placeholders with three or more BIG LETTERS! EXAMPLES/DEMO: I'll show how to add simple "customer" objects. They need cn and custID: TEMPLATE (newCustomer.template): #TITLE Quick new customer. #DEF XXX Name of customer #DEF YYY Customer id dn: cn=XXX,ou=customers,o=company objectClass: customer objectClass: top cn: XXX custID: YYY SCRIPT: #!/usr/bin/env python2.2 import ldiftemplate t = ldiftemplate.new( 'newCustomer.template' ) ph = t.getPlaceholders() # [ ('XXX', 'Name of customer'), ... ] print t.title print " I need: \n - " + "\n - ".join( map( lambda x: x[1], ph ) ) for p in ph: e = raw_input( "%s> " % ( p[1] ) ) t.setPlaceholder( p[0], e ) print t.getTupleList() OUTPUT: Quick new customer. I need: - Name of customer - Customer id Name of customer> FlyLime Ltd Customer id> 1034 ('cn=FlyLime Ltd,ou=customers,o=company', [('objectClass', ['customer', 'top']), ('custID', ['1034']), ('cn', ['FlyLime Ltd'])]) The next step would be to do ldap.initialize(...), bind(...), and l.add_s( L[0], L[1] ). INSTALLATION: Copy ldiftemplate.py to a good place. :-) "/usr/lib/python2.2/site-packages/" or "<the directory where your program is>" -- Tjabo Kloppenburg GnuPG Key is on http://www.home.unix-ag.org/tjabo/kontakt.html

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ANN: Boost.Python v2
by David Abrahams 11 Oct '02

11 Oct '02

I'm pleased to announce that v. 1.29.0 of the Boost C++ libraries (http://www.boost.org) has been released! This marks the first release of v2 of the Boost.Python library (http://www.boost.org/libs/python), a C++ library enabling seamless interoperability between C++ and the Python programming language. The new version has been rewritten from the ground up, with a more convenient and flexible interface, and many new capabilities, including support for: - References and Pointers - Globally Registered Type Coercions - Automatic Cross-Module Type Conversions - Efficient Function Overloading - C++ to Python Exception Translation - Default Arguments - Keyword Arguments - Manipulating Python objects in C++ - Exporting C++ Iterators as Python Iterators - Documentation Strings Of course, the old abilities to wrap classes and functions are still there. Thanks to all Boost.Python's contributors and users for their patience and their support. -- David Abrahams * Boost Consulting dave(a)boost-consulting.com * http://www.boost-consulting.com

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sfcvs
by Gerard Durand 11 Oct '02

11 Oct '02

sfcvs is a small Python script that allows people behin http proxies to automatically retrieve files stored on SourceForge CVS servers. It is using the viewcvs web interface of sourceforge and should work with little modification on other similar websites. Now you can happily cvs checkout python like the others. It was tested with Python 2.2 on Windows and Linux. http://www.angelfire.com/rnb/sfcvs/ _________________________________________________________________ Chat with friends online, try MSN Messenger: http://messenger.msn.com

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Flightdeck-UI version 0.1.3 released
by fdui＠openlight.com 10 Oct '02

10 Oct '02

The goal of the Flightdeck-UI project is to apply ideas from aircraft instrumentation design to general purpose user interfaces. Release 0.1.3 adds an analog dial element and a status line element with general annunciator features, as well as making other enhancements. In addition, most Flightdeck-UI elements are now created by using a new Singleton class factory. There has also been a lot more testing of the code since the previous version. The project homepage is at "http://www.openlight.com/fdui/". Flightdeck-UI is open source. It is written in Python and requires Tkinter. Questions can be emailed to originating address of this message.

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FixedPoint 0.1.1 -- BugFix Release
by Doug Fort 10 Oct '02

10 Oct '02

FixedPoint release 0.1.1 What it is ========== This package encapsulates the representation of a fixed point number in Python. It was originally written by Tim Peters and posted to the Python Starship. What it does ============ The FixedPoint object supports all suitable Python operators to enable the developer to perform fixed point math in a natural way. What's New ========== This is a (hasty) bugfix release for 0.1.0 We discovered that my alternative rounding algorithm didn't behave correctly for negative quotients. Tim, the original author recommended making _roundQuotient a member of FixedPoint, enabling the rounding algorithm to become a normal member, rather than a static member. While refactoring, I changed the name from 'RoundingAlgorithm' to the less verbose 'round'. So instead of from fixedpoint import FixedPoint, BankersRounding FixedPoint.RoundingAlgorithm = staticmember(BankersRounding) you can say from fixedpoint import FixedPoint, bankersRounding FixedPoint.round = bankersRounding We got a good description of rounding philosphy from Tim in an email. Joe has incorporated this in the documentation. There's a link to HTML rendering of the LaTex documentation at the project website: http://fixedpoint.sourceforge.net What's Next =========== This release (really truly) concludes our planned changes to FixedPoint. We're going to sit back and watch for bug reports and feature requests, but we won't mess with the code anymore without provocation. -- Doug Fort, Programmer http:/www.dougfort.net

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[ANN] PySQLite 0.3.1 released
by Gerhard Häring 10 Oct '02

10 Oct '02

NAME: PySQLite - Extension module for SQLite databases. DESCRIPTION: A Python-DB API 2.0 compliant extension module that uses the SQLite embedded SQL database. No external SQL server required. Think of Gadfly, only faster. SQLite is a powerful, embedded relational database in a compact C library. It supports a large subset of SQL92, multiple tables and indices, transactions, and triggers. Sources are uncopyrighted and can be used for any purpose. More information can be found at <http://www.hwaci.com/sw/sqlite/index.html>. HOMEPAGE: <http://pysqlite.sourceforge.net> DOWNLOAD: Source and Windows binary downloads are available at <http://www.sourceforge.net/projects/pysqlite> AUTHORS: Gerhard Häring <gerhard.haering(a)gmx.de> Michael Owens <mike(a)mikesclutter.com> LICENSE: Python NOTES: The following are changes and enhancements since the last release: * Make the test suite less noisy. If you want to enable tracebacks of user-defined functions or aggregates, you'll now have to enable them via _sqlite.enable_userfunction_debugging. This closes bug reports #608421 and #608426. * Fixed lots of bugs in PgResultSet. Access of columns is now case-insensitive. * Added test suite for PgResultSet class.

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