Python-announce-list May 2002

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44 participants
55 discussions

TUN/TAP module for Linus
by Alex King 21 May '02

21 May '02

I coded up a simple wraper around the TUN/TAP network driver, just to see if I could do it :) It could be used for the same types of tasks as the original TUN/TAP driver, such as tunneling (VPNs?), bridging remote networks, network protocol analysis etc., except in python now. More info is at http://alex.king.net.nz/tuntap.html. No documentation is available, but I'll do further work to develop this if i get feedback that it might actually be usefull to someone. Alex

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Release of SalStat 20020514
by Alan James Salmoni 21 May '02

21 May '02

Announcing new release of the SalStat statistics package version 20020514 WRITTEN IN PYTHON AND WXPYTHON (just like the last release). New version sorts out a few minor bugs, adds nominal descriptive statistics and a few minor details. Further details from the website http://salstat.sunsite.dk and downloads available from http://salstat.sunsite.dk/downloads.html Alan James Salmoni Lead Developer - SalStat.

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RELEASED Mailman 2.0.11
by barry＠zope.com 20 May '02

20 May '02

I've just released version 2.0.11 of Mailman, the GNU Mailing List Manager. Mailman is released under the GNU General Public License (GPL). Version 2.0.11 fixes two cross-site scripting vulnerabilities. I recommend that folks upgrade their 2.0.x systems to this new version. GNU Mailman is software to help manage electronic mail discussion lists. Mailman gives each mailing list a unique web page and allows users to subscribe, unsubscribe, and change their account options over the web. Even the list manager can administer his or her list entirely via the web. Mailman has most of the features that people want in a mailing list management system, including built-in archiving, mail-to-news gateways, spam filters, bounce detection, digest delivery, and so on. Mailman is compatible with most web servers, web browsers, and mail servers. It runs on any Unix-like operating system. Mailman 2.0.11 requires Python 1.5.2 or newer. To install Mailman from source, you will need a C compiler. For more information on Mailman, including links to file downloads, please see the Mailman web page: http://www.gnu.org/software/mailman And its mirrors at: http://mailman.sourceforge.net http://www.list.org Patches and source tarballs are available at http://sourceforge.net/project/showfiles.php?group_id=103 There are email lists (managed by Mailman, of course!) for both Mailman users and developers. See the web sites above for details. Cheers, -Barry

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[Application] AlgViewer
by carlo bifulco 18 May '02

18 May '02

AlgViewer --------- Visualize, organize, write and share tree-like and scorecard algorithms AlgViewer allows navigation, editing and sharing of tree like and scorecard like algorithms. Algorithms are implemented as text files and visualized with a simple graphic user interface. Algorithms stored on a local machine are synchronized, through FTP, with a central repository on a remote server, permitting sharing of newly created algorithms among a community of users. AlgViewer runs on W32 and *nix systems, is written in Python and uses Tkinter as it's graphic user interface. It has been designed for people who use algorithms in their daily work. It's original application is diagnostic Surgical Pathology. URL: http://sourceforge.net/projects/algviewer/ Download: http://sourceforge.net/project/showfiles.php?group_id=48112&release_id=88667 License: GPL Platform: W32, Linux Requires: Pmw, Tkinter Binaries: W32 Gui: Tkinter Categories: Miscellany, Medical carlo bifulco (c.bifulco(a)tin.it) -- <a href="http://sourceforge.net/projects/algviewer/">AlgViewer</a> -- Visualize, organize, write and share tree-like and scorecard algorithms

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Pyro 2.8 available
by Irmen de Jong 18 May '02

18 May '02

I'm glad to announce the latest version of Pyro, 2.8! You can get it via http://pyro.sourceforge.net, then go to the project homepage. This is mostly a bugfix release. This likely is the last Pyro release in the 2.x version series. The next release, 3.0, will have some major changes and improvements. Changes since 2.7 include: More complete docs, better example chapter in docs, fixed ^C handling of chatbox examples, fixed protocol bug when both checksum and compression were used, setup script should work again with Win98, old bug in PyroC generated proxy code fixed. 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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MSS 1.00 is out
by Matt Whiteley 18 May '02

18 May '02

I guess this is where my original post to comp.lang.python about MSS should have gone, sorry. MSS 1.00 is out! MSS is a lightweight service framework allowing web services of all kinds to be plugged in with absolute EASE. Providing an HTTP server, error control and an easy-to-use API, MSS allows the Python developer to concentrate on the functionality of their service rather than providing a multi-threaded web serving front-end to it. Designed to be a lightweight middleware solution, MSS can be found at : http://homepages.shu.ac.uk/~mjwhitel/mss Matt Whiteley

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Ann: Stackless Limbo Dancing Works Fine!
by Christian Tismer 17 May '02

17 May '02

Announcement: Stackless Python At It's Best, Ever. 18-May-02: Limbo Dancing works fine! Yet some more thinking for weeks, and a few days of implementation. Now, the first implementation of channels is available. It isn't complete, but works just fine. The stackless module now supports to create channels by function channel(). A channel has the methods send() and receive(). Try it yourself! You might either want to build your own Stackless, checking out the module stackless from :pserver:anonymous@tismer.com:/home/cvs , or, for Windows users, just take the pre-built binary, extract it into some directory, and start Python or PythonWin fom there. I will for sure build an installer again, after I have got some feedback. This implementation tries to follow the concepts of the OCCAM/ALEF/LIMBO languages by supporting the channel concept as the central communication/blocking/control feature. Tasks do not communicate directly, but through channels. You might have guessed it: Stackless will try to implement/support Hoare's CSP, finally. But before, I have to understand more of it. This will happen in the next few weeks. This release is an alpha release. There are most probably a lot of omissions. Some are obvious: - There isn't yet a scheduler, like there was one for the uthread module. This is trivial to implement and will be added in almost no time. - There isn't yet an ALT/PRI ALT construct like in OCCAM/ALEF/LIMBO. This is most sophisticated and very hard to implement correctly! I will try to find out how to do this the best way, during my stay at IronPort, from May 18th to May 29. If somebody from the US would like to contact me by phone, please use the opportunity and call me via IronPort. I am employed by this company. - You shouldn't use channels from the interpreter prompt, but in scripts, only. The machinery doesn't check for changed interactive sessions yet and will most likely crash, soon. Despite of that, it seems to work nicely with PythonWin and extensions. -- Christian Tismer :^) <mailto:tismer@tismer.com> Mission Impossible 5oftware : Have a break! Take a ride on Python's Johannes-Niemeyer-Weg 9a : *Starship* http://starship.python.net/ 14109 Berlin : PGP key -> http://wwwkeys.pgp.net/ work +49 30 89 09 53 34 home +49 30 802 86 56 pager +49 173 24 18 776 PGP 0x57F3BF04 9064 F4E1 D754 C2FF 1619 305B C09C 5A3B 57F3 BF04 whom do you want to sponsor today? http://www.stackless.com/

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ANN: Python Spread Module 1.1 Released
by Guido van Rossum 17 May '02

17 May '02

I've released version 1.2 of the Spread Module for Python: http://www.python.org/other/spread/ About the Spread Module ----------------------- This package contains a simple Python wrapper module for the Spread toolkit (see below). The wrapper is compatible with Python 2.1 and 2.2. It wraps Spread mailboxes and messages in Python objects with appropriate methods and attributes, and turns Spread errors into Python exceptions. Virtually all Spread features are accessible from Python. About Spread ------------ >From the Spread website (http://www.spread.org): Spread is a toolkit that provides a high performance messaging service that is resilient to faults across external or internal networks. Spread functions as a unified message bus for distributed applications, and provides highly tuned application-level multicast and group communication support. Spread services range from reliable message passing to fully ordered messages with delivery guarantees, even in case of computer failures and network partitions. Spread is designed to encapsulate the challenging aspects of asynchronous networks and enable the construction of scalable distributed applications, allowing application builders to focus on the differentiating components of their application. Changes since release 1.2 ------------------------- - Changed internal uses of Python's object memory API to stop using macro versions of the names (that worked fine, but was dubious practice for non-core extension modules). - Changed mbox.disconnect() to be as safe as possible when SPREAD_DISCONNECT_RACE_BUG is not defined. - Added a test to ensure than the scenario described below doesn't deadlock (two threads in a process sharing an mbox, and one thread doing mbox.receive() waiting for the other thread to do mbox.multicast()). This test deadlocks with high probability if you define SPREAD_DISCONNECT_RACE_BUG. - SPREAD_DISCONNECT_RACE_BUG is turned off, although Spread 3.16.2 still suffers the insecurity it was guarding against. Alas, the workaround can cause deadlocks, depending on how the app uses Spread. Enjoy! --Guido van Rossum (home page: http://www.python.org/~guido/)

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ANN: set-0.2 module available
by coady＠bent-arrow.com 17 May '02

17 May '02

Located at http://bent-arrow.com/python and the Vaults of Parnassus. This extension module implements a set type, similar to PEP 218. Changes since version 0.1 include some bug fixes and the features below, based on feedback. - The set hashing function is no longer brain-dead. Thanks to Kevin Jacobs. - Set comparison has been better optimized. - Sets have two new (read&write) boolean attributes: 'mutable' and 'hashable'. At the risk of feature bloat, this should allow complete flexibility. The default is still the same: hashable and mutable, but becomes immutable upon first (successful) hashing. Thanks for the comments, -Coady

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[ANN] Chaco: A 2D scientific graphics library
by eric 17 May '02

17 May '02

I'm happy to announce that Enthought is developing a platform independent plotting library for Python. The Chaco project, as it is named, is funded by the Space Telescope Science Institute (STScI) and licensed under a BSD style open source license. Chaco is designed for presentation quality scientific 2D graphics on a variety of output devices. The initial targets are wxPython, TkInter, Mac OS X, and PDF for hard copy output. It's design is extensible so that other backends, such as OpenGL, can be added. Currently, the low-level API for wxPython, Mac OS X, and PDF are operational. The high level graphics objects will be developed over the coming months. Chaco is hosted at the SciPy site. For more information visit: http://www.scipy.org/site_content/chaco People are invited to comment on and contribute to the project. Chaco's discussion list is: scipy-chaco(a)scipy.org To subscribe, go to the mailing list's info page: http://scipy.net/mailman/listinfo/scipy-chaco thanks, eric jones -- Eric Jones <eric at enthought.com> Enthought, Inc. [www.enthought.com and www.scipy.org] (512) 536-1057

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Python-announce-list May 2002