Mailman 3 August 2003 - Python-announce-list

ANN: Munkware 0.1
by Jeremy Jones 29 Aug '03

29 Aug '03

Munkware, a transactional and persistent queueing mechanism, is proud to announce version 0.1 for public consumption. Bug fixes/enhancements include: - improved recoverability in the event of system crash - example code which is more functional (i.e. they die nicely now ;-) - and modification of transactional syntax (from *_ack() to *_commit() and un_*() to *_rollback()) The Sourceforge Project page is located at http://sourceforge.net/projects/munkware/ and the project home page is located at http://munkware.sourceforge.net/ Future plans for Munkware include: - Better documentation with diagrams of state traversal - Auto-commit functionality - Transactional and persistent queueing server with (possibly) a SOAP interface If you have any suggestions, please feel free to email them to me. If you just think that this project sucks, email that, too. Jeremy Jones

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Wing IDE 1.1.10 Released
by Wing IDE Announce 28 Aug '03

28 Aug '03

Hi, Wing IDE is a commercial integrated development environment for the Python programming language. I'm pleased to announce version 1.1.10, the latest maintenance release for Wing IDE Lite and Wing IDE Standard. This is a free upgrade for all Wing IDE 1.1 users. This release enhances support for Python 2.3, adds debugging support for Cygwin Python, adds debugger display of __slots__ defined attributes, improves analysis support for new style classes, and adds a number of other minor features. The release also fixes a range of bugs, including problems affecting wxPython users, and incorrect resizing of maximized windows on Windows platforms. Try demo: http://wingide.com/wingide/demo Upgrade: http://wingide.com/downloads Purchase: http://wingide.com/order Change log: http://wingide.com/pub/wingide/1.1.10/CHANGELOG.txt As of today, purchase of Wing IDE 1.1 includes free upgrade to Wing IDE 2.0 when that becomes available. Please email questions, feedback, or problem reports to support(a)wingide.com. Thanks, Stephan Deibel -- Wing IDE for Python Archaeopteryx Software, Inc Take Flight! www.wingide.com

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Retic EAI Server 0.4 Released - xmlBlaster and Jabber support
by Alexander DEJANOVSKI 28 Aug '03

28 Aug '03

I've released a new version of Retic with new components : - Source : xmlBlaster - Sinks : Jabber and HTTP The Designer is now fully working (win32 only) and supports all components of the current Retic release (included in the 0.4 release). It is available on sourceforge : http://sourceforge.net/projects/retic ============================================================= WHAT IS RETIC ? Retic is an EAI Server. The aim is to permit applications to communicate, even if they don't speak the same language (which means transport protocols as well as data structures). This is done by building adaptors. An adaptor is composed of : - One source - Several pipes (process data transformations) - Several sinks (destination of data) - Several loggers (using the logging module of python 2.3) ============================================================= Database support extended to mxODBC, DCOracle2, Sybase, mysql and odbc. (for real this time :o) ============================================================= Have fun !!

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Plone Conference, Early Bird registration ends soon
by Andy McKay 28 Aug '03

28 Aug '03

Note: Early bird registration ends Friday! The Plone Conference now has a full list of speakers and tutorials. Over three days in New Orleans almost every aspect of using and developing Plone will be covered by the creators of Plone, Archetypes and Page Templates. Some of the highlights: Evan Simpson will be answering questions about Page Templates. Alexander Limi will be giving a full tutorial on customising Plone Ben Saller will be detailing how to use Archetypes with Plone And don't miss Wednesday nights Q & A panel on "Making money with Plone" For a full list of talks see:http://plone.org/events/conferences/1/talks For a full list of tutorials see: http://plone.org/events/conferences/1/tutorials Early bird registration runs out August 31st, sign up today: http://plone.org/events/conferences/1/registration -- Andy McKay http://www.agmweb.ca

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New SIG: email-sig
by Barry Warsaw 27 Aug '03

27 Aug '03

After unanimous consent <wink> on the meta-sig and mimelib-devel lists, I've gone ahead and created the new email-sig. See http://www.python.org/sigs/email-sig for details. This SIG's mission is to design and implement version 3.0 of the email package for Python 2.4. Please use this SIG instead of the mimelib-devel list from now on. -Barry

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cx_Freeze 2.2
by Anthony Tuininga 27 Aug '03

27 Aug '03

What is cx_Freeze? cx_Freeze is 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. Where do I get it? http://starship.python.net/crew/atuining http://www.computronix.com/utilities.shtml (it may be a few days before the second site is updated) What's new? 1) Add option (--ext-list-file) to FreezePython to write the list of extensions copied to the installation directory to a file. This option is useful in cases where multiple builds are performed into the same installation directory. 2) Pass the arguments on the command line through to Win32 GUI applications. Thanks to Michael Porter for pointing this out. 3) Link directly against the python DLL when building the frozen bases on Windows, thus eliminating the need for building an import library. 4) Force sys.path to include the directory in which the script to be frozen is found. 5) Make sure that the installation directory exists before attempting to copy the target binary into it. 6) The Win32GUI base has been modified to display fatal errors in message boxes, rather than printing errors to stderr, since on Windows the standard file IO handles are all closed. -- 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: KirbyBase 1.4
by Jamey Cribbs 27 Aug '03

27 Aug '03

KirbyBase 1.4 is now available at: http://www.netpromi.com/files/KirbyBase-1.4.zip What is KirbyBase? KirbyBase is a simple, pure-Python, plain-text, flat-file database management system that can be used either embedded in your application or in a client/server, multi-user mode. To find out more about KirbyBase, go to: http://www.netpromi.com/kirbybase.html Changes: Added two new database field types: datetime.date and datetime.datetime. They are stored as strings, but are input and output as instances of datetime.date and datetime.datetime respectively. You can use them just like any other field: you can use them as selection criteria (i.e. db.select('plane.tbl', ['began_service'], ['>=%s' % datetime.date(1937,12,31)) or use them to specify the sort order of the result set of a select statement (i.e. db.select('plane.tbl', ['name'], ['.*'], sortField='range', ascending=False)). Made a few internal optimizations when running queries that have resulted in a 15-20% speed increase when doing large queries or updates. Changed the name of all private methods from starting with two underscores to starting with one underscore based on a discussion in comp.lang.python as to how to properly name private variables.

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Retic EAI Server 0.3.2 Released - SQLTreeSource included.
by Alexander DEJANOVSKI 27 Aug '03

27 Aug '03

I've released a new version of Retic with new components : - Pipes : XPathPipe and FlatToXMLPipe - Source : SQLTreeSource (permits to build complex XML documents from several SQL requests). The Designer is now fully working and supports all components of the current Retic release. It is available on sourceforge : http://sourceforge.net/projects/retic ============================================================= WHAT IS RETIC ? Retic is an EAI Server. The aim is to permit applications to communicate, even if they don't speak the same language (which means transport protocols as well as data structures). This is done by building adaptors. An adaptor is composed of : - One source - Several pipes (process data transformations) - Several sinks (destination of data) - Several loggers (using the logging module of python 2.3) ============================================================= ABOUT THE SQLTreeSource COMPONENT: Sometimes (well, might even be more than that) you need to get more than a bunch of rows from a table translated to XML. You need a whole structured XML document with a complex and deep architecture. The SQLTreeSource is what you need then. It permits to describe an XML tree, each node being the result of an SQL statement. Here's an example : <source name="SQLTreeSource" type="SQLTreeSource" dbType="odbc" dsn="localhost_mysql" user="root" password="" rootTag="XPWeb" encoding="ISO-8859-1" msgSize="0" polls="1" pollPeriod="0"> <treeQuery> <query SQL="select * from iterations" recTag="iteration"> <query SQL="select * from stories" parentLink="id" childLink="iteration_id" recTag="story"> <query SQL="select * from tasks" parentLink="id,iteration_id" childLink="story_id,iteration_id" recTag="task"/> </query> </query> </treeQuery> </source> Here is the XML output of the source described above : <?xml version="1.0" encoding="ISO-8859-1"?> <XPWeb> <iteration> <id>1</id> <project_id>1</project_id> <working_days_name>ite_1</working_days_name> <load_factor>1.6</load_factor> <name>07/04/2003</name> <description>Mise en recette Valo <date>2003-04-30</date> <story> <id>3</id> <iteration_id>1</iteration_id> <project_id>1</project_id> <name>Evironnement de tests unitaires</name> <description>Création d'un environnement de tests unitaires et de non-régression.</description> <validation_criteria></validation_criteria> <priority>8</priority> <risk>3</risk> <weight>2</weight> <task> <id>15</id> <story_id>3</story_id> <iteration_id>1</iteration_id> <project_id>1</project_id> <responsible_team_member_id>5</responsible_team_member_id> <working_days_name>ite_1</working_days_name> <name>Scripts de création des données (TERA)</name> <description>Ecriture des scripts de création de base</description> <start_date>2003-04-10</start_date> <weight>3</weight> <done>4.8</done> <todo>0</todo> <end_date>2003-04-10</end_date> </task> <task> <id>16</id> <story_id>3</story_id> <iteration_id>1</iteration_id> <project_id>1</project_id> <responsible_team_member_id>5</responsible_team_member_id> <working_days_name>ite_1</working_days_name> <name>Environnement $U - Session et Uprocs</name> <description>Création des sessions et uprocs propres aux tests.</description> <start_date>2003-04-16</start_date> <weight>1</weight> <done>0</done> <todo>1</todo> <end_date>2003-04-16</end_date> </task> </story> <story> ...... ...... ...... </story> </iteration> </XPWeb> This is an extraction of my XPWeb database (THE Extreme Programming management tool - http://xpweb.sourceforge.net ). Three tables are accessed here : iterations, stories and tasks. Iterations may have several stories, which may have several tasks. What I wanted here is to extract all my iterations with their stories and tasks into a single XML document. <treeQuery> <query SQL="select * from iterations" recTag="iteration"> This permits to get all iterations at the second level (the first being the root one whose name is defined in the rootTag attribute of the source component) of the document. Each iteration will be written to XML, embraced by an <iteration> tag Providing a new subquery this way : <treeQuery> <query SQL="select * from iterations" recTag="iteration"> <query SQL="select * from stories" parentLink="id" childLink="iteration_id" recTag="story"/> </query> Permits to define a new sublevel under iteration, writing the stories inside <story> tags. parentLink and childLink permit to assign the stories to their iteration (we don't want all stories to be repeated under each iteration). Here, we make a link between the fields : iterations.id and stories.iteration_id At execution time, the SQL statement is modified to include the link. (for example : select * from stories where iteration_id = 4) Now, let's add a subquery to stories : <treeQuery> <query SQL="select * from iterations" recTag="iteration"> <query SQL="select * from stories" parentLink="id" childLink="iteration_id" recTag="story"> <query SQL="select * from tasks" parentLink="id" childLink="story_id" recTag="task"/> </query> </query> Here, we've added a new sublevel, which will come under stories. It will write all tasks for each stories (with a link between stories.id and tasks.story_id). Simple, isn't it ? ============================================================= Have fun !!

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Help improve Python -- Call for reviewers
by Raymond Hettinger 27 Aug '03

27 Aug '03

Sourceforge is used to track bug reports, feature requests, and patches: https://sourceforge.net/projects/python/ Each of those submissions needs to be reviewed and discussed. A good way to participate in python development is to spend some time adding useful comments to each report. Bug reports ------------ * Sometimes the OP thinks a bug is present when, in fact, Python is behaving as intended. It is useful to gently steer them in the right direction, correct their understanding, and have them close the bug report. * Sometimes the bug is unique to OP's own environment and it is helpful to have another person confirm the bug on another machine. * Often, a bug report is inadequately specific -- "My 200 line script doesn't work". Help is needed to refine the report to the simplest possible demonstration of the error: bool("False")!=False. * It is even more helpful to specifically identify where the error is occurring in the source: line 200 in textwrap.py has an and/or problem. * In many cases, discussion is necessary to ascertain whether the behavior is truly a bug, a documentation issue, or a natural byproduct of other important invariants. * It is also helpful to suggest alternative solutions and discuss the implications of each. Patches -------- * The simplest checks are: - does it work - does it have unittests - does it have a doc patch * More advanced considerations: - are there subtle code breakages (one man's bug is another's feature) - is the change desirable - would a refactoring have simplified the problem - are there unintended consequences - is there a better alternative solution Feature Requests ------------------- The basic idea here is to see whether life would truly be better if the idea were adopted. Considerations include the minimizing the rate of language growth, ease of implementation, how it fits in with the rest of the language, and the existence of practice use cases. Readers of comp.lang.python are also in a good position to make comments on the idea and how it fits in with stated Python design goals. For example, IDLE could easily grow macros, RCS buttons, templates and such, but its design goal is to be a relatively simple yet complete, portable editor/ide written in pure python -- this means that grandiose ideas to transform it into emacs will likely not be accepted. The presence of a feature in another language is neither cause for acceptance or rejection. Just because Perl, PHP, VB, or Ruby does something, it is not necessarily good or necessarily bad. It does at least provide a proof-of-concept and real world experience with the feature so that we can learn from its successes or failures. The itertools module was designed to capture some of the successes in Haskell and ML. Raymond Hettinger

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CherryPy-0.9-gamma released
by remi＠cherrypy.org 27 Aug '03

27 Aug '03

Hello everyone, I am pleased to announce the release of CherryPy-0.9-gamma. This release includes a new thread-pool server, sessions that works, the ability to store session data in a database and many bugfixes and improvements. ------------------------------------------ About CherryPy: CherryPy is a Python-based web application development toolkit: libraries and compiler. It allows us to build web applications in Python in much the same way we would build an other Python program. CherryPy has been used in production for more than a year and it has proven fast and robust. Remi. http://www.cherrypy.org

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