Mailman 3 July 2003 - Python-announce-list

PyUNO in OpenOffice.org1.1rc
by Joerg Budischewski 19 Jul '03

19 Jul '03

Hi, I am happy to announce the availability of PyUNO in OpenOffice.org1.1rc. PyUNO is a generic bridge between python and OpenOffice.org's component model UNO (Universal Network Objects). The bridge enables python programmers to script a running OpenOffice.org -instance from the python executable via the UNO interprocess bridge. Additionally it allows to implement UNO components in python, which e.g. can be loaded directly into the OpenOffice.org process. OpenOffice.org1.1rc ships with a nearly complete prebuilt python-2.2.2 runtime. This is necessary, because python 2.2.x does not yet build a shared library by default and the python executable is linked vs. the system's stdc++ library, which in general is incompatible to OpenOffice's stdc++ library. In theory, PyUNO can also be used only with the core libraries of OpenOffice.org in order to use low-level-features like an interprocess bridge, C++ vs. Java vs. Python bridge, etc. See http://udk.openoffice.org/python/python-bridge.html for a more detailed description of pyuno. See http://www.openoffice.org/dev_docs/source/1.1rc for getting OOo's source and/or binaries. Please put any feedback to dev(a)udk.openoffice.org (see http://udk.openoffice.org and click on Mailing lists to subscribe). Bye, Joerg Budischewski

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SC-Track Roundup 0.5.9 - an issue tracking system
by Richard Jones 18 Jul '03

18 Jul '03

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ================================================= SC-Track Roundup 0.5.9 - an issue tracking system ================================================= This is a bugfix (and performance) release for version 0.5.x - if you're upgrading from before 0.5, you *must* read doc/upgrading.txt! Unfortunately, the Zope frontend for Roundup is currently broken. If you'd like to volunteer to fix it, let me know. Roundup requires python 2.1.3 or later for correct operation. Users of the sqlite backend are encouraged to upgrade sqlite to version 2.7.3. Python 2.3 in any form is *not* supported. This release has: - - backported XSS message cleaning fix (sf bug 757128) - - only clean sessions once per hour (backport from HEAD) - - remember the session db type (much faster session db opening) - - backported last-modified and if-modified-since header support for static files (ie. style.css etc.) from HEAD - - changed rdbms_common to fix sql backends under Py2.3 - - don't open the database in cgi if it's not necessary Source and documentation is available at the website: http://roundup.sourceforge.net/ Release Info (via download page): http://sourceforge.net/projects/roundup Mailing lists - the place to ask questions: http://sourceforge.net/mail/?group_id=31577 About Roundup ============= Roundup is a simple-to-use and -install issue-tracking system with command-line, web and e-mail interfaces. It is based on the winning design from Ka-Ping Yee in the Software Carpentry "Track" design competition. Note: Ping is not responsible for this project. The contact for this project is richard(a)users.sourceforge.net. Roundup manages a number of issues (with flexible properties such as "description", "priority", and so on) and provides the ability to: (a) submit new issues, (b) find and edit existing issues, and (c) discuss issues with other participants. The system will facilitate communication among the participants by managing discussions and notifying interested parties when issues are edited. One of the major design goals for Roundup that it be simple to get going. Roundup is therefore usable "out of the box" with any python 2.1+ installation. It doesn't even need to be "installed" to be operational, though a disutils-based install script is provided. It comes with two issue tracker templates (a classic bug/feature tracker and a minimal skeleton) and six database back-ends (anydbm, bsddb, bsddb3, sqlite, metakit and gadfly). -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.1 (Darwin) iD8DBQE/F5+zrGisBEHG6TARAjNRAJ9dOCQDGaMc7QC3AJIMKtA7d+966wCfajEo UdKm1cxMkFINGB5KJ+KdrAU= =guFJ -----END PGP SIGNATURE-----

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ZODB3 3.3 alpha 1 released
by Tim Peters 18 Jul '03

18 Jul '03

The ZODB3 package provides a set of tools for using the Zope Object Database (ZODB) in Python programs separately from Zope. ZODB3 3.3a1 is an experimental version that is compatible with new-style classes. This version of ZODB currently works only with Python 2.3. The primary change is that ExtensionClass is gone: the Persistent base class is a regular Python type instead of an ExtensionClass type now. As a result, you should be able to use properties, descriptors, and other new Python features with persistent objects. Compatibility with other Python features new in 2.2 is also improved, primarily that 3.3 BTree-based containers participate in Python's newer iteration and __contains__ protocols. These changes were largely backported from ZODB4, used in Zope3. Development on ZODB4 has been suspended, and the intent is that the ZODB3 3.3 line will eventually be used in both Zope2 and Zope3. The current release has a lot of rough edges, but we hope developers will find it useful to give it a test drive. We have not tested Persistent objects that use properties or slots. We expect that code with getattr or setattr hooks will need to be written with care, probably using different techniques than in earlier versions of ZODB. A source tarball and Windows installer can be downloaded from: http://www.zope.org/Products/ZODB3.3/ The Windows installer was built with Python 2.3c1 (2.3. release candidate 1), which will be released later tonight. Enjoy!

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ANNOUNCE: KirbyBase 1.02
by Jamey Cribbs 17 Jul '03

17 Jul '03

Version 1.02 of KirbyBase is now available at: http://www.netpromi.com/files/KirbyBase-1.02.zip KirbyBase is a simple, pure-python, plain-text database management system that can be used either embedded or client/server. You can find out more about KirbyBase at: http://www.netpromi.com/KirbyBase.html Changes in version 1.02 ----------------------- * Fixed bug in createTable, and insert methods where field list passed into method was getting modified. * Added the ability to use special characters in table data such as \r, \n, \032, and |. * Changed the name of all private methods to start with two underscores in order to follow recommended naming conventions. * Improved documentation. * Added licensing information. * Now uses distutils for installation. I would like to thank Mark Bucciarelli for not only reporting the createTable bug and the special characters bug, but also sending me patches to fix both of them. Thanks Mark! Also, I would like to thank Brian Benjamin for providing valuable suggestions regarding the private methods and documentation, and for his kind words about KirbyBase. Thanks Brian! Jamey Cribbs www.netpromi.com

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ANNOUNCE: Conflux Lite 1.0
by Indrek Järve 16 Jul '03

16 Jul '03

15 July 2003, Tallinn Inversion Software OÜ is pleased to announce the release of Cònflux Lite 1.0, a web-based groupware and file management application. Key features of Cònflux Lite include: * Powerful groupware components o shared calendars with support for repeating events o tasks which can also be assigned to coworkers o shared organization contacts and private contacts o discussions * A file management module * An e-mail client * All data is accessable from any internet-connected computer with a browser * Easily localizable - support for multiple languages and date formats * Unicode support About Cònflux Cònflux Lite is an open source groupware and file management system. It uses the common web browsers as it's user interface to achieve the access-anywhere functionality. Based on open source components and offering easy localizability, the product offers a cost-effective solution for organizing your daily work and bringing it online. Cònflux Lite is written in Python using the Apache2/Python integration module mod_python and uses the PostgreSQL database as a back end. The source code is released under the GNU General Public License. Read more about Cònflux and try the online demo from the Cònflux home page, http://www.conflux.ee/ About Inversion Software Inversion Software OÜ is a privately owned software development company based in the capital of Estonia, Tallinn. Our employees have extensive experience in the field of groupware and web-based information systems. The company's product range also includes Cònflux Professional - a commercial offering, Cònflux ASP - a package specially designed for ASP service providers, Cònflux Lite - an open source and freeware groupware package, and customized development.

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streams - lazy streams abstraction tightly integrated with iterators
by Beni Cherniavsky 15 Jul '03

15 Jul '03

As a result of the thread about "Snapshottable iterators" on c.l.py I decided to separate lazy linked lists from the iterators over them. The API now looks much more elegant. Here__ is the result. __ http://www.technion.ac.il/~cben/python/streams.py This module exposes the duality between linked lists and iterators: - Simple linked lists have the drawback that their tail must be known and finite. This can be fixed by overloading head/tail access and making it lazy; the result is popular in functional programming languages [1]_ under the name ''stream''. This is implemented by the `Stream` class. - Iterators have the drawback that advancing them is destructive but there is no way to capture the ''remaining future'' of an iterator at some moment. This can be fixed by making an iterator explicitly point to a stream and allow separate iterators to be forked from it. This is implemented by the `StreamIter` class. Another useful thing about linked lists is that you can non-destructively cons in front of them. This is implemented by the `Cons` class (which is also used to represent the part of stream that has already been computed) and is also accessible through the `StreamIter.unyield()` method. A `__stream__()` protocol is defined, paralleling `__iter__()`. Object can implement it to provide special implementaion of streams over them (but normally you would simply implement `__iter__()` and `Stream` will know to wrap it). On stream objects this method returns self. A convenince subscripting interface is provided for streams. .. [1] See also: - The `Streams chapter of SICP`__ shows how streams with a lazy tail can be a very powerful abstraction. __ http://mitpress.mit.edu/sicp/full-text/book/book-Z-H-24.html#%_sec_3.5 - `SRFI 40: A Library of Streams`__ specifies streams whose head is lazy too, which is more elegant and predictable. It's also a better parallel for iterators. This is the flavour implemented by this module. __ http://srfi.schemers.org/srfi-40/srfi-40.html - `STREAM_IO layer`__ of the standard ML basic library seems to provide a similar abstration but with buffering. I don't know ML enough to say more. __ http://www.standardml.org/Basis/stream-io.html#STREAM_IO:SIG:SPEC -- Beni Cherniavsky <cben(a)tx.technion.ac.il> If I don't hack on it, who will? And if I don't GPL it, what am I? And if it itches, why not now? [With apologies to Hilel ;]

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cx_Freeze 2.0
by Anthony Tuininga 15 Jul '03

15 Jul '03

After a rather long hiatus, I am happy to announce the release of cx_Freeze 2.0 which contains a number of significant enhancements. 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) Added support for in process (DLL) COM servers using PythonCOM 2) Made use of new Python 2.3 modules (that work under Python 2.2 as well) as they contain advanced functionality that make the task of finding modules simpler and less error prone 3) Fixed import error with C extensions in packages (thanks to Thomas Heller for pointing out the solution to that problem) 4) Added options to FreezePython to force the inclusion of modules that are not found by the module finder (--include-modules) and force the exclusion of modules that are found by the module finder (--exclude-modules) 5) Dropped the option --copy-extensions since the resulting binary is useless without the extensions 6) Inclusion of a sample for building a Win32 service 7) Other smaller bug fixes -- 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: Quixote 0.6.1 released
by Neil Schemenauer 15 Jul '03

15 Jul '03

Version 0.6.1 of Quixote is now available from: http://www.mems-exchange.org/software/quixote/ Quixote is yet another framework for developing Web applications in Python. Changes from 0.6.1 ------------------ * Form.add_widget() now returns the widget. * Allow the Expires header to be suppressed by setting the HTTPResponse.cache attribute to None. * Use title case for header names added by HTTPResponse.set_headers(). Clients are not supposed to care about case but it's better to be conservative. * Catch IOError exceptions raised when writing the response and log a message (rather than exiting with a traceback). * Fix bug regarding _q_exception_handler. 'namespace_stack' needs to be updated while the traversal is occuring. Thanks to Jason Sibre for spotting it and for the fix. * Add If-Modified-Since support for StaticFile objects. Also, don't set the Expires header by default. Instead, set the Last-Modified header based on the modification time of the file. The Expires header can be enabled by providing a value for the 'cache_time' argument.

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ANN: Naja 0.8.3 is now available
by webmaster＠keyphrene.com 15 Jul '03

15 Jul '03

Naja is a freeware tool written in Python/wxPython. Naja is a download manager and a website grabber. It can be used for extract JPEG images from news server. Naja supports proxy (HTTP, FTP, SOCKS v4a, SOCKS v5). The downloading maybe achieved by splitting the file being downloaded into several parts and downloading these parts at the same time (HTTP & FTP). Donwload speeds are increased by downloading the file from the mirror sites, when the sites propose it. Version 0.8.3 of Naja has been released and is available for download from the Keyphrene web site: http://www.keyphrene.com products/naja

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Next meeting of Toronto Python User Group: Tue July 29 8pm
by Peter Hansen 15 Jul '03

15 Jul '03

The next regular meeting of the Greater Toronto Area Python User Group (aka PyGTA) will occur on Tuesday July 29 at 8pm in the usual location. See the wiki page at http://web.engcorp.com/pygta/wiki/NextMeeting for details. There are as of yet no offers of presentations, but the last two meetings seemed to be well received so maybe we'll continue the impromptu-presentation-with-laptop-with-broken-keyboard style of meetings... ;-) A projector should be available for use *if* requested in advance. See you there! -Ian Garmaise, Peter Hansen, PyGTA organizers

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