Mailman 3 January 2002 - Python-announce-list

[Application] transAuction/0.1.1
by Craig Hurley 27 Jan '02

27 Jan '02

transAuction/0.1.1 ------------------ A small database program for sellers to track transactions on online auctions. A small database program for sellers to track transactions on online auctions. URL: transacution.sourceforge.net License: LGPL Platform: Win32, Linux Gui: Tkinter Categories: Applications, Personal Database Craig Hurley (sobit(a)impudence.net) -- <a href="transacution.sourceforge.net">transAuction/0.1.1</a> -- A small database program for sellers to track transactions on online auctions.

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ANN: PythonCard 0.6.3
by Kevin Altis 26 Jan '02

26 Jan '02

Release 0.6.3 fixes Linux/GTK bugs discovered after the 0.6.2 release. Support was also added for localized resource files to simplify internationalization of PythonCard apps. A FAQ, tutorial, and updated documentation describing the framework was added to the main web site. All the information you need about PythonCard can be found on the project web page at: http://pythoncard.sourceforge.net/ You can download the latest release at: http://sourceforge.net/project/showfiles.php?group_id=19015 For a list of the samples that have been built with PythonCard and some screenshots of them in action go to: http://pythoncard.sourceforge.net/samples.html A description of each sample is included in the readme.txt file in each sample directory. The kind people at SourceForge host the project: http://sourceforge.net/projects/pythoncard/ If you want to get involved the main contact point is the Mailing list: http://lists.sourceforge.net/lists/listinfo/pythoncard-users PythonCard requires Python 2.1.x or later and wxPython 2.3.2.1 or later and runs on every platform those are available for. wxPython can be downloaded at http://www.wxpython.org/ ka --- Kevin Altis altis(a)semi-retired.com

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ANNOUNCE: Python 10 Birds of a Feather session on a Python distributed transaction framework
by Jim Fulton 26 Jan '02

26 Jan '02

We plan to have a Birds of a Feather (BOF) session at the Python 10 Conference, http://python10.org, on a Python distributed transaction framework. The Zope object database, ZODB, includes frameworks for persistence and transaction management. These frameworks depend very little on the rest of ZODB and will be factored out of ZODB and made into separate packages in the next generation of ZODB, ZODB 4. We have experience using the transaction framework with other persistence mechanisms in Zope, including relational databases and the light-weight directory access protocol, LDAP. This allows distributed transactions to be coordinated among multiple database systems. If a transaction is committed or rolled back, the commit or rollback happens for each of the participating databases. This is very useful. It would be useful to make this capability available to other Python applications. In particular, it would be worthwhile to explore integrating distributed transactions with the Python database API to make it easier to coordinate among multiple databases and to better support distributed transactions in the Python database API, for example by including interfaces to underlying distributed-transaction APIs not currently exposed by the Python database API. We'd like to kick off an effort to design a transaction framework to encompass ZODB, relational databases, and other persistence systems. The talk BOF begin with a presentation of the ZODB Transaction framework. The BOF will take place at lunch time on Tuesday, February 5. Jim -- Jim Fulton mailto:jim@zope.com Python Powered! CTO (888) 344-4332 http://www.python.org Zope Corporation http://www.zope.com http://www.zope.org

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ANNOUNCE: Python 10 Birds of a Feather session on a Python persistence framework
by Jim Fulton 26 Jan '02

26 Jan '02

We plan to have a Birds of a Feather (BOF) session at the Python 10 Conference, http://python10.org, on a Python persistence framework. The Zope object database, ZODB, includes frameworks for persistence and transaction management. These frameworks depend very little on the rest of ZODB and will be factored out of ZODB and made into separate packages in the next generation of ZODB, ZODB 4. The ZODB persistence framework provides significant benefits to Python programmers: - Objects are automatically loaded and stored. The programmer doesn't have to keep tack of when objects have been modified. The objects track modification and notify the transaction manager of changes. The transaction manager coordinates storing data. Data are loaded when needed, with loads triggered by access from other objects. - An object cache automates moving data out of memory when no longer needed. A cache invalidation protocol helps to keep object consistence across multiple applications or application threads. We would like to see these benefits made available for other databases. We'd especially like to see a persistence framework using relational databases, reusing object-relational mapping efforts, such as MiddleKit and others. We'd like to kick off an effort to design a persistence framework to encompass ZODB, relational databases, and other persistence systems. The BOF will begin with a presentation of the ZODB Persistence framework. The BOF will take place the evening of Wednesday, February 6. Jim -- Jim Fulton mailto:jim@zope.com Python Powered! CTO (888) 344-4332 http://www.python.org Zope Corporation http://www.zope.com http://www.zope.org

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RELEASED - StandaloneZODB 1.0 release candidate 1
by barry＠zope.com 25 Jan '02

25 Jan '02

I'm please to announce the first official release of StandaloneZODB, the Python object persistency system also known as the Z Object Database. ZODB is the object-oriented database underlying Zope; the StandaloneZODB project's goal is to provide those same facilities to non-Zope related Python applications. Today we are releasing StandaloneZODB 1.0 release candidate 1. We expect to release the final version on 1-Feb-2002. StandaloneZODB is based on the same code as the ZODB in Zope, albeit on a separate release branch. Its inspiration comes from Andrew Kuchling's StandaloneZODB project on SourceForge. While there are still some differences, the Standalone 1.0 release is the first on the path toward convergence. Subsequent releases should complete the merge of Andrew's and Zope Corporation's packages. The StandaloneZODB release includes the following components: - Core ZODB, including the persistence machinery - Standard storages such as FileStorage - Supporting modules such as ExtensionClass - The persistent BTrees modules - ZEO - Experimental Berkeley storages - Some documentation <wink> See the README file for details on building and installing StandaloneZODB. For details on using ZODB, see Andrew's included user guide. StandaloneZODB 1.0c1 is released under the ZPL 2.0. It should be compatible with all Python versions from Python 2.1 to Python 2.2. It may or may not work with versions earlier than Python 2.1. Download StandaloneZODB-1.0c1.tgz from: http://www.zope.org/Products/StandaloneZODB and visit the StandaloneZODB Wiki page at: http://www.zope.org/Wikis/ZODB/StandaloneZODB See also: http://www.zope.org/Wikis/ZODB/FrontPage for more information about our long-range ZODB plans. Enjoy, -Barry Barry A. Warsaw Zope Corporation, Pythonlabs barry(a)zope.com

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[ANN] Pyro 2.4 available
by Irmen de Jong 24 Jan '02

24 Jan '02

You can get the latest Pyro version (2.4) at http://pyro.sourceforge.net What's new: Event server fixes, including new example Bug fixes in core and examples Oneway method call, including callback example Preliminary Jython compatibility (client-only). Documentation updates. What is Pyro? Pyro is an acronym for PYthon Remote Objects. It is a basic Distributed Object Technology system written entirely in Python. It is extremely easy to implement a distributed system with Pyro, because all network communication code is abstracted and hidden from your application. You just get a remote Python object and invoke methods on the object on the other machine. Pyro offers you a Name Server, an Event Service, mobile objects, remote exceptions, dynamic proxies, remote attribute access, automatic reconnection, a detailed manual, and many examples to get you started right away. Irmen de Jong

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kjbuckets.pyd for Python 2.2
by Oleg Broytmann 24 Jan '02

24 Jan '02

Hello! jfarr at speakeasy.org sent me kjbuckets.pyd for Python 2.2. Published: http://phd.pp.ru/Software/Python/#kjbuckets with all mirrors: http://phd.by.ru/Software/Python/#kjbuckets, http://phd2.chat.ru/Software/Python/#kjbuckets. Please note that I am not kjbuckets' maintainer, just a temporary keeper. If anyone of you wants to take the responsibility for the package - you are mostly welcome. 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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memory-mapped Numeric arrays: arrayfrombuffer version 2
by Kragen Sitaker 24 Jan '02

24 Jan '02

The 'arrayfrombuffer' package features support for Numerical Python arrays whose contents are stored in buffer objects, including memory-mapped files. This has the following advantages: - loading your array from a file is easy --- a module import and a single function call --- and doesn't use excessive amounts of memory. - loading your array is quick; it doesn't need to be copied from one part of memory to another in order to be loaded. - your array gets demand-loaded; parts you aren't using don't need to be in memory or in swap. - under memory-pressure conditions, your array doesn't use up swap, and parts of it you haven't modified can be evicted from RAM without the need for a disk write - your arrays can be bigger than your physical memory - when you modify your array, only the parts you modify get written back out to disk This is something that's been requested on the Numpy list a few times a year since 1999. arrayfrombuffer lives at http://pobox.com/~kragen/sw/arrayfrombuffer/ The current version is version 2; it is released under the X11 license (the BSD license without the advertising clause). <kragen(a)pobox.com> <P><A HREF="http://pobox.com/~kragen/sw/arrayfrombuffer/">arrayfrombuffer 2</A> - creates Numeric arrays from memory-mapped files. (23-Jan-02)

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Roundup 0.4.0 - an issue tracking system
by Richard Jones 23 Jan '02

23 Jan '02

Roundup 0.4.0 - an issue tracking system If you are upgrading please read MIGRATION.txt. Roundup requires python 2.1.1 for correct operation. Support for dumbdbm requires python 2.1.2 or 2.2. Big stuff in this release: - Use of transactions to prevent partial data commits - Zope Product front-end - Message threading - Nicer, more consistent change message generation - More bug fixes and unit tests - Much, much more: see the release info for details. Source and documentation is available at the website: http://roundup.sourceforge.net/ Release Info (including CHANGES since 0.3.0): http://sourceforge.net/project/shownotes.php?release_id=71660 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 2.0+ 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 and three database back-ends.

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ANN: Python course in Silicon Valley (1/28-3/25)
by wesc＠deirdre.org 23 Jan '02

23 Jan '02

one last reminder that open enrollment for this course are still available. contact Mickal at the number below for information. details: monday nites, 6:30-9:30p, 1/28-3/25 (!2/18), sunnyvale in addition to the course description at the website below, there is a course website with the syllabus, schedule, topics, homework, handouts, etc. here: http://instruction.ucsc-extension.edu/wesc/013e44 finally, the website for the textbook is in the .sig below. feel free to contact me directly if you have any questions. hope to see some of you in class this coming week! -wesley > Wesley J. Chun <wesc(a)deirdre.org> wrote in a msg on Jan 9, 2002... > > After a 1 year hiatus, UC Santa Cruz Extension is once again > offering a Python course, Python Programming (I). The course > is 8 weeks in total, one night a week (Monday nights) from > January 28 - March 25 (no class on Presidents' Day, Feb 18). > > The class is taught in Sunnyvale. The course description and > enrollment information can be found below or by calling Mickal > at 408-566-4534: > > http://instruction.ucsc-extension.edu/wesc/013e44cd.htm > > if all goes well, i may be teaching a new course in the Spring, > Python Programming 2, which follows right after the 1st course. > if enrollments are not high enough for the advanced class, then > i will probably teach the 1st class again. i have also put in > a proposal for a "completely new to programming" course for > newbies, but that has yet to be approved. > > anyway, hope to see some of you in class later this month!! > > -wesley - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - "Core Python Programming", Prentice Hall PTR, © 2001 http://starship.python.net/crew/wesc/cpp/ wesley.j.chun :: wesc(a)deirdre.org cyberweb.consulting :: silicon valley, ca && las vegas, nv http://www.dnai.com/~wesc/cyberweb/

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