Mailman 3 July 2002 - Python-announce-list

ANN: 'go' v0.6.3 - quick directory changing
by Trent Mick July 5, 2002

July 5, 2002

Where? http://starship.python.net/~tmick/ What is 'go'? 'go' is a simple command line application to help you change directories in your shell session quickly. Generally you have a set of directories that you commonly visit. Typing these paths in full, even given tab completion, can be a pain. This script allows one to define a set of directory shortcuts to be able to quickly change to them. For example, I could define 'apy' to represent "D:\trentm\main\Apps\ActivePython", then C:\> go apy D:\trentm\main\Apps\ActivePython> and C:\> go apy/test D:\trentm\main\Apps\ActivePython\test> Some standard shortcuts, such as '~' for $HOME, are setup. What platforms? Windows and Linux. Cheers, Trent -- Trent Mick TrentM(a)ActiveState.com

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spyce v1.1.18
by Rimon Barr July 5, 2002

July 5, 2002

SPYCE - Server Python Pages SPYCE is a drop-in Apache module 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 can also be used as a command-line utility for HTML pre-processing, and also via CGI on any other server. v1.1.18 released on 5 July 2002. Get it at: http://spyce.sourceforge.net ---------- Partial change log: v1.1.18 fcgi support added X-Spyce header added documentation: how to write new modules v1.1.17 feature request - compaction algorithm improved v1.1.16 generalised session.setHandler (session handler selection mechanism) gdbm, bsd db session handlers added v1.1.15 minor makefile and rpm script changes handling of multi-line strings in python code response.flush() added v1.1.14 wrappers to check python version v1.1.13 added new language construct: "Python chunks" v1.1.12 stdout module redirects stdout to response object added writeln() to response module

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ANN: Pyrex 0.3.3
by Greg Ewing July 4, 2002

July 4, 2002

Pyrex 0.3.3 is now available: http://www.cosc.canterbury.ac.nz/~greg/python/Pyrex/ Another slew of minor improvements: - Can assign any pointer type to void * without casting - File names in error messages no longer quoted (this was apparently confusing some editors) - Problems with using array in pointer context fixed - Default arguments in extension type methods fixed - Quote chars embedded in triple-quoted strings fixed - Runtime crash when using *args fixed What is Pyrex? -------------- Pyrex is a new language for writing Python extension modules. It lets you freely mix operations on Python and C data, with all Python reference counting and error checking handled automatically. -- Greg Ewing, Computer Science Dept, University of Canterbury, Christchurch, New Zealand http://www.cosc.canterbury.ac.nz/~greg

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getpassfix 0.7.2 released
by Allan Crooks July 4, 2002

July 4, 2002

I'm pleased to announce that the new version of the getpassfix module has been released. If you want to find out more about it, you can read an introduction to it here: http://ccec.sf.net/getpassfix.html The getpassfix module attempts to solve a bug in the getpass module which occurs because the way that console I/O works in Windows is inconsistent between versions. To improve the module, I need feedback about which versions of Windows have the bug. Given the lack of feedback last time, I've now written a very simple test script which will take mere seconds to run. Even if you have no interest in this module, please run the test script and send me back the results it gives, I'd appreciate it a lot. You only need to do run the test script on Windows. For information about running the test script, read here: http://ccec.sourceforge.net/getpassfix.html#testing

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Molecular Modelling Toolkit 2.2
by Konrad Hinsen July 4, 2002

July 4, 2002

Molecular Modeling Toolkit release 2.2 ====================================== The Molecular Modelling Toolkit (MMTK) is an Open Source program library for molecular simulation applications, written in Python with C modules for time-critical parts. In addition to providing ready-to-use implementations of standard algorithms, MMTK serves as a code basis that can be easily extended and modified to deal with standard and non-standard problems in molecular simulations. MMTK's functionality includes - construction of molecular systems, with special support for proteins and nucleic acids - infinite systems or periodic boundary conditions (orthorhombic elementary cells) - common geometrical operations on coordinates - rigid-body fits - visualization using external PDB and VRML viewers; animation of dynamics trajectories and normal modes - the AMBER 94 force field, with several options for handling electrostatic interactions - a deformation force field for fast normal mode calculations on proteins - energy minimization (steepest descent and conjugate gradient) - molecular dynamics (with optional thermostat, barostat, and distance constraints) - normal mode analysis - trajectory operations - point charge fits - molecular surface calculations - interfaces to other programs Release 2.2 contains numerous small additions, improvements, and bug fixes. The main new features since the last official release, 2.0, are - Parallelization on shared-memory machines using threads. - Parallelization using MPI. The parallelization uses a data replication scheme and is therefore efficient only for a relatively small number of processors. - Various harmonic force fields for efficient normal mode calculations on proteins. - Harmonic restraints. - OPLS force field. - TrajectoryViewer, a tool for inspecting MMTK trajectories. For more information and for downloading, see the MMTK Web site at http://dirac.cnrs-orleans.fr/MMTK/ or http://starship.python.net/~hinsen/MMTK/ See also: K. Hinsen The Molecular Modeling Toolkit: A New Approach to Molecular Simulations J. Comp. Chem. 21, 79-85 (2000) -- ------------------------------------------------------------------------------- Konrad Hinsen | E-Mail: hinsen(a)cnrs-orleans.fr Centre de Biophysique Moleculaire (CNRS) | Tel.: +33-2.38.25.55.69 Rue Charles Sadron | Fax: +33-2.38.63.15.17 45071 Orleans Cedex 2 | Deutsch/Esperanto/English/ France | Nederlands/Francais -------------------------------------------------------------------------------

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Python and XML development using the open source 4Suite toolkit
by Frank Carlos July 4, 2002

July 4, 2002

Python and XML development using the open source 4Suite toolkit 4Suite is an open source, comprehensive library and toolkit for XML processing in Python. 4Suite implements various open standards related to XML. This series of tutorials introduces 4Suite and gives practical examples of XML development using 4Suite and Python. Part 1: PyXml There are various DOM implementations, in varying computer languages. Here, we will be introducing PyXml. This particular implementation is written in Python. http://www-105.ibm.com/developerworks/education.nsf/xml-onlinecourse- bytitle/28BEDEE3E7219EB386256AE300743B69?Open&t=gr,lnxl23,p=PyXml Part 2: 4XPath and 4XSLT This tutorial introduces 4XPath and 4XSLT . If you plan to use Python in association with XML processing, these are useful tools to get to know. http://www-105.ibm.com/developerworks/education.nsf/xml-onlinecourse- bytitle/BE1A7E60838F9F7686256AF400523C58?Open&t=gr,lnxl23,p=4XPath4XSLT Part 3: 4RDF This tutorial will go into detail on RDF, with hands-on examples of how to use the various RDF facilities available with Python. http://www-105.ibm.com/developerworks/education.nsf/xml-onlinecourse- bytitle/8A1EA5A2CF4621C386256BBB006F4CEC?Open&t=gr,lnxl23,p=4RDF

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ANN: New Project -- Source 2 Binary
by Rakis July 3, 2002

July 3, 2002

I'd like to announce the kickoff of a new project aimed at simplifying the software build environment currently provided by Make and Autoconf. Name: Source 2 Binary (S2B) URL: http://s2b.sourceforge.net License: GPL At this point, the project consists of an idea and a proof-of-concept prototype. I'm looking for some fellow pythonians to take a look at the project, maybe get some discussion going, and tell me whether or not they think this project is worth pursuing. So if you have the time and interest, take a look and tell me what you think (preferably on the project's Open Discussion Forum). -- Rakis rakis attt gmpexpress dottt net <P><A HREF="http://s2b.sourceforge.net">Source 2 Binary </A> - Simplified software build environment. (3-July-02)

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ANN: Numarray-0.3.5 bugfix release
by Todd Miller July 3, 2002

July 3, 2002

Numarray 0.3.5 --------------------------------- Numarray is an array processing package designed to efficiently manipulate large multi-dimensional arrays. Numarray is modelled after Numeric and features c-code generated from python template scripts, the capacity to operate directly on arrays in files, and improved type promotions. Version 0.3.5 is a bugfix release: 1. Fixed bug in numarray.NumArray._copyFrom which broke array copies within an array. Basically, an array copying part of itself onto another part of itself produced incorrect results. 2. Cleaned up setup.py to avoid generating code unless actually installing. Now you can ask setup.py for help ("python setup.py --help") without feeling like it's running wild. 3. Modified LinearAlgebra2.MLab to avoid use of properties, potentially making it work with Python versions < 2.2. Since there's still no regression test for MLab, this is iffy, but "mean", at least, appeared to work. E-mail jmiller(a)stsci.edu if you find numarray MLab problems. WHERE ----------- Numarray-0.3.5 windows executable installers and source code tar ball is here: http://sourceforge.net/project/showfiles.php?group_id=1369 Numarray is hosted by Source Forge in the same project which hosts Numeric: http://sourceforge.net/projects/numpy/ The web page for Numarray information is at: http://stsdas.stsci.edu/numarray/index.html Trackers for Numarray Bugs, Feature Requests, Support, and Patches are at the Source Forge project for NumPy at: http://sourceforge.net/tracker/?group_id=1369 REQUIREMENTS -------------------------- numarray-0.3.5 requires Python 2.0 or greater. AUTHORS, LICENSE ------------------------------ Numarray was written by Perry Greenfield, Rick White, Todd Miller, JC Hsu, Paul Barrett, Phil Hodge at the Space Telescope Science Institute. Thanks go to Jochen Kupper of the University of North Carolina for his work on Numarray and for porting the Numarray manual to TeX format. Numarray is made available under a BSD-style License. See LICENSE.txt in the source distribution for details. -- Todd Miller jmiller(a)stsci.edu

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ANN: SLUG Python Interest Group (Sydney Australia)
by Mary July 3, 2002

July 3, 2002

The Python Interest Group of the Sydney Linux Users Group is having its monthly meeting: Date/Time: Monday 15th July 2002, 7pm - 9pm Location: University of Technology, Broadway campus, Sydney, room 2.04.29 (not the same room as last month). Although the PIG is part of SLUG, the scope of the group is not restricted to Python on Linux, and all Python users are welcome. -Mary.

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first release of pythondirector
by Anthony Baxter July 2, 2002

July 2, 2002

I've put the first suitable-for-someone-other-than-me release of python director up on pythondirector.sourceforge.net. This is a pure python (async I/O based) TCP loadbalancer/redirector. Why another load balancer? Well, the ones that are out there are just not what I want or need. Python Director's aimed at people who want or need a more sophisticated load balancer than something that just provides a round robin service, and at the same time is manageable without a restart. Note that pydir handles any TCP protocol - not just HTTP. We use it to loadbalance fastcgi fine. Requires: Python 2.1 or greater. feedback invited. Anthony -- Anthony Baxter <anthony(a)interlink.com.au> It's never too late to have a happy childhood. ---------- Full readme file follows: ---------- This is a pure python TCP load balancer. It takes inbound TCP connections and connects them to one of a number of backend servers. Project home: http://pythondirector.sourceforge.net/ Contact email: Anthony Baxter <anthony(a)interlink.com.au> ---------------------------------------------------------------------- Features: - async i/o based, so much less overhead than fork/thread based balancers - Multiple scheduling algorithms (random, round robin, leastconns) - If a server fails to answer, it's removed from the pool - the client that failed to connect gets transparently failed over to a new host. - xml based configuration file - seperate management thread that periodically re-adds failed hosts if they've come back up. - optional builtin webserver for admin ---------------------------------------------------------------------- API (web based): Admin interface: running / running.txt current configuration and status of the PD (HTML / text) config.xml - initial config of the PD (xml) running.xml current running config of the PD (xml) Host mgmt: addHost?service=NNN&group=NNN&ip=NNN:n - add a new host to the group of a service delHost?service=NNN&group=NNN&name=NNN:n - remove a host from the group of a service delAllHosts?service=NNN&group=NNN - remove all hosts from the group of a service Note that the last two will not let you remove all hosts from the enabled group. group mgmt: enableGroup?service=NNN&group=NNN - switch the currently enabled group. Note that this will not affect any in-progress connections. changeScheduler?service=NNN&group=NNN&scheduler=NNN user mgmt: addUser delUser service mgmt: others: ---------------------------------------------------------------------- Changes from 0.0.2 to 0.0.3: - delHost hooked up - running.xml added - XML dump of current config - centralised logging - the various things that write logfile entries need to be made consistent, and a lot of additional logging needs to be added. - Python2.1 compatibility fix: no socket.gaierror exception on 2.1 Changes from 0.0.1 to 0.0.2: - refactored web publishing (babybobo) - package-ised and distutil-ised the code ---------------------------------------------------------------------- This software is covered by the following license: Copyright (c) 2002 ekit.com Inc (http://www.ekit-inc.com/) and Anthony Baxter <anthony(a)interlink.com.au> Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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[ANN] my_gui v.0.30 : a gui module for MySQL .
by Marco Stagno July 2, 2002

July 2, 2002

my_gui.py is a simple Grafic User Interface for MySql It can be used as Python module to create your own MySQL interface. download it at http://www.prosa.it/projects/projects Change Log : ------------ 2002-07-01 * my_gui.py: Release (v.0.30) 2002-06-xx * added UserGrant menu * removed bug about comments * cleaned code * added show as text menu * still working on html menu * found bug about data >250KB; still working on it; red background if data is >250KB * changed GnomePopupMenu in GtkMenu * added tool menu (optimize table, show create, comment..) * added popup menu on notebook pages * removed bug about os.login (with xdm/gdm/...) * removed bug about limit * added icons in directory * added allignment in prefs/filter window * added index info in info menu * added MySQL menu * removed bugs about NULL (="\0") value 2002-06-20: * my_gui.py: FIRST PUBLIC RELEASE (0.24) MAS!

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VanPyz Meeting: July 2nd
by Paul Prescod July 2, 2002

July 2, 2002

The XRoads Learning Management System, a Zope Show-and-Tell John Maxwell will show us "How a small, rag-tag team of python hackers with a good idea can create something big, complex, and wonderful using Zope, XML, and open-source technology." More information on XRoads can be found at http://www.entity-x.ca/XRoads. When: July 2nd, 7pm Where: ActiveState --- Come discuss XML and REST web services at: Open Source Conference: July 22-26, 2002, conferences.oreillynet.com/os2002/ Extreme Markup: Aug 4-9, 2002, www.extrememarkup.com/extreme/

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Scientific Python 2.4
by Konrad Hinsen July 1, 2002

July 1, 2002

Scientific Python 2.4 --------------------- Scientific Python is a module library for scientific computing. In this collection you will find modules that cover basic geometry (vectors, tensors, transformations, vector and tensor fields), quaternions, automatic derivatives, (linear) interpolation, polynomials, elementary statistics, nonlinear least-squares fits, unit calculations and conversions, Fortran-compatible data formatting, 3D visualization via VRML, two Tk widgets for simple line plots and 3D wireframe models. Scientific Python also contains Python interfaces to the netCDF library (implementing a portable binary format for large arrays) and the Message Passing Interface, the most widely used communications library for parallel computers. Version 2.4 of Scientific Python has just been released. In addition to numerous small improvents and bug fixes, it contains - the high-level parallelization module Scientific.BSP - an interface to the parallelization library BSPlib (see www.bsp-worldwide.org for details) - autoregressive models for time series in Scientific.Signals.Models The BSP parallelization module was designed to facilitate development and testing of parallel programs. Its main features are: - communication can handle almost any Python object - deadlocks are impossible by design - possibility to implement distributed data classes that can be used transparently by parallel applications - an interactive parallel interpreter that can be used inside Emacs (and perhaps other Python development environments) in order to provide an interactive parallel programming environment - parallel programs run as serial monoprocessor code on any Python installation with no changes and usually negligeable loss of performance - no need to maintain a separate serial version A tutorial on BSP programming with Python is available at the Web site and included in the distribution. For more information and for downloading, see http://dirac.cnrs-orleans.fr/ScientificPython or http://starship.python.net/crew/hinsen/scientific.html -- ------------------------------------------------------------------------------- Konrad Hinsen | E-Mail: hinsen(a)cnrs-orleans.fr Centre de Biophysique Moleculaire (CNRS) | Tel.: +33-2.38.25.56.24 Rue Charles Sadron | Fax: +33-2.38.63.15.17 45071 Orleans Cedex 2 | Deutsch/Esperanto/English/ France | Nederlands/Francais -------------------------------------------------------------------------------

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Ann: Stackless 2.2.1 on PowerPC
by Christian Tismer July 1, 2002

July 1, 2002

Announcement: Stackless Python Works on PowerPC. The PPC support was much simpler to implement than expected. It was helpful to look into the PPC switch implementation of the ICON language. Thanks to Just van Rossum for giving me access to his machine. Thanks to Armin Rigo for showing me the tricks for x86-unix. There is still no installer available, this is at alpha level. In case you want to build your own Stackless, check out the module stackless from :pserver:anonymous@tismer.com:/home/cvs Updated news can be found at http://www.stackless.com/ have fun - chris -- 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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spyce v1.1.13
by Rimon Barr July 1, 2002

July 1, 2002

There have been quite a number of changes, improvements since the prior wide annoucement. Refer to: http://cvs.sourceforge.net/cgi-bin/viewcvs.cgi/spyce/spyce/CHANGES?rev=HEAD… for a summary. ---------- SPYCE - Server Python Pages SPYCE is a drop-in Apache module 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 can also be used as a command-line utility for HTML pre-processing, and also via CGI on any other server. v1.1.13 released on 1 July 2002. Get it at: http://spyce.sourceforge.net ---------- Your comments and suggestions are welcome. 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 | | Understanding is a kind of ecstasy. +---- -- Carl Sagan

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